git update 31-1-2010

1 files changed, 11717 insertions, 11697 deletions

diff --git a/xorg-server/hw/xfree86/x86emu/ops.c b/xorg-server/hw/xfree86/x86emu/ops.c
index 37ae2c9c9..740a3a58d 100644
--- a/xorg-server/hw/xfree86/x86emu/ops.c
+++ b/xorg-server/hw/xfree86/x86emu/ops.c
@@ -1,11697 +1,11717 @@
-/****************************************************************************
-*
-*						Realmode X86 Emulator Library
-*
-*            	Copyright (C) 1996-1999 SciTech Software, Inc.
-* 				     Copyright (C) David Mosberger-Tang
-* 					   Copyright (C) 1999 Egbert Eich
-*
-*  ========================================================================
-*
-*  Permission to use, copy, modify, distribute, and sell this software and
-*  its documentation for any purpose is hereby granted without fee,
-*  provided that the above copyright notice appear in all copies and that
-*  both that copyright notice and this permission notice appear in
-*  supporting documentation, and that the name of the authors not be used
-*  in advertising or publicity pertaining to distribution of the software
-*  without specific, written prior permission.  The authors makes no
-*  representations about the suitability of this software for any purpose.
-*  It is provided "as is" without express or implied warranty.
-*
-*  THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
-*  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
-*  EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
-*  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
-*  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
-*  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-*  PERFORMANCE OF THIS SOFTWARE.
-*
-*  ========================================================================
-*
-* Language:		ANSI C
-* Environment:	Any
-* Developer:    Kendall Bennett
-*
-* Description:  This file includes subroutines to implement the decoding
-*               and emulation of all the x86 processor instructions.
-*
-* There are approximately 250 subroutines in here, which correspond
-* to the 256 byte-"opcodes" found on the 8086.  The table which
-* dispatches this is found in the files optab.[ch].
-*
-* Each opcode proc has a comment preceeding it which gives it's table
-* address.  Several opcodes are missing (undefined) in the table.
-*
-* Each proc includes information for decoding (DECODE_PRINTF and
-* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc
-* functions (START_OF_INSTR, END_OF_INSTR).
-*
-* Many of the procedures are *VERY* similar in coding.  This has
-* allowed for a very large amount of code to be generated in a fairly
-* short amount of time (i.e. cut, paste, and modify).  The result is
-* that much of the code below could have been folded into subroutines
-* for a large reduction in size of this file.  The downside would be
-* that there would be a penalty in execution speed.  The file could
-* also have been *MUCH* larger by inlining certain functions which
-* were called.  This could have resulted even faster execution.  The
-* prime directive I used to decide whether to inline the code or to
-* modularize it, was basically: 1) no unnecessary subroutine calls,
-* 2) no routines more than about 200 lines in size, and 3) modularize
-* any code that I might not get right the first time.  The fetch_*
-* subroutines fall into the latter category.  The The decode_* fall
-* into the second category.  The coding of the "switch(mod){ .... }"
-* in many of the subroutines below falls into the first category.
-* Especially, the coding of {add,and,or,sub,...}_{byte,word}
-* subroutines are an especially glaring case of the third guideline.
-* Since so much of the code is cloned from other modules (compare
-* opcode #00 to opcode #01), making the basic operations subroutine
-* calls is especially important; otherwise mistakes in coding an
-* "add" would represent a nightmare in maintenance.
-*
-****************************************************************************/
-
-#include "x86emu/x86emui.h"
-
-/*----------------------------- Implementation ----------------------------*/
-
-/****************************************************************************
-PARAMETERS:
-op1 - Instruction op code
-
-REMARKS:
-Handles illegal opcodes.
-****************************************************************************/
-static void x86emuOp_illegal_op(
-    u8 op1)
-{
-    START_OF_INSTR();
-    if (M.x86.R_SP != 0) {
-    DECODE_PRINTF("ILLEGAL X86 OPCODE\n");
-    TRACE_REGS();
-    DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n",
-        M.x86.R_CS, M.x86.R_IP-1,op1));
-    HALT_SYS();
-        }
-    else {
-        /* If we get here, it means the stack pointer is back to zero
-         * so we are just returning from an emulator service call
-         * so therte is no need to display an error message. We trap
-         * the emulator with an 0xF1 opcode to finish the service
-         * call.
-         */
-        X86EMU_halt_sys();
-        }
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x00
-****************************************************************************/
-static void x86emuOp_add_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-    u8 *destreg, *srcreg;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADD\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = add_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = add_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = add_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = add_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x01
-****************************************************************************/
-static void x86emuOp_add_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADD\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = add_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = add_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = add_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = add_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = add_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = add_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x02
-****************************************************************************/
-static void x86emuOp_add_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADD\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = add_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = add_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = add_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = add_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x03
-****************************************************************************/
-static void x86emuOp_add_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADD\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = add_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x04
-****************************************************************************/
-static void x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADD\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = add_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x05
-****************************************************************************/
-static void x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("ADD\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("ADD\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = add_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = add_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x06
-****************************************************************************/
-static void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("PUSH\tES\n");
-    TRACE_AND_STEP();
-    push_word(M.x86.R_ES);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x07
-****************************************************************************/
-static void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("POP\tES\n");
-    TRACE_AND_STEP();
-    M.x86.R_ES = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x08
-****************************************************************************/
-static void x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = or_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = or_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = or_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = or_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x09
-****************************************************************************/
-static void x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = or_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = or_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = or_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = or_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = or_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = or_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0a
-****************************************************************************/
-static void x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = or_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = or_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = or_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = or_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0b
-****************************************************************************/
-static void x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = or_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0c
-****************************************************************************/
-static void x86emuOp_or_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OR\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = or_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0d
-****************************************************************************/
-static void x86emuOp_or_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("OR\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("OR\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = or_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = or_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0e
-****************************************************************************/
-static void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("PUSH\tCS\n");
-    TRACE_AND_STEP();
-    push_word(M.x86.R_CS);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0f. Escape for two-byte opcode (286 or better)
-****************************************************************************/
-static void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1))
-{
-    u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
-    INC_DECODED_INST_LEN(1);
-    (*x86emu_optab2[op2])(op2);
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x10
-****************************************************************************/
-static void x86emuOp_adc_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADC\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = adc_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = adc_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = adc_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = adc_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x11
-****************************************************************************/
-static void x86emuOp_adc_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADC\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = adc_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = adc_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = adc_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = adc_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = adc_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = adc_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x12
-****************************************************************************/
-static void x86emuOp_adc_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADC\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = adc_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = adc_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = adc_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = adc_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x13
-****************************************************************************/
-static void x86emuOp_adc_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADC\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = adc_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x14
-****************************************************************************/
-static void x86emuOp_adc_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("ADC\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = adc_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x15
-****************************************************************************/
-static void x86emuOp_adc_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("ADC\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("ADC\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = adc_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = adc_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x16
-****************************************************************************/
-static void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("PUSH\tSS\n");
-    TRACE_AND_STEP();
-    push_word(M.x86.R_SS);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x17
-****************************************************************************/
-static void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("POP\tSS\n");
-    TRACE_AND_STEP();
-    M.x86.R_SS = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x18
-****************************************************************************/
-static void x86emuOp_sbb_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SBB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = sbb_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = sbb_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = sbb_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sbb_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x19
-****************************************************************************/
-static void x86emuOp_sbb_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SBB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sbb_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sbb_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sbb_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sbb_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sbb_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sbb_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1a
-****************************************************************************/
-static void x86emuOp_sbb_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SBB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sbb_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sbb_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sbb_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sbb_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1b
-****************************************************************************/
-static void x86emuOp_sbb_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SBB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sbb_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1c
-****************************************************************************/
-static void x86emuOp_sbb_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SBB\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = sbb_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1d
-****************************************************************************/
-static void x86emuOp_sbb_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("SBB\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("SBB\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = sbb_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = sbb_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1e
-****************************************************************************/
-static void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("PUSH\tDS\n");
-    TRACE_AND_STEP();
-    push_word(M.x86.R_DS);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1f
-****************************************************************************/
-static void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("POP\tDS\n");
-    TRACE_AND_STEP();
-    M.x86.R_DS = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x20
-****************************************************************************/
-static void x86emuOp_and_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AND\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = and_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = and_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = and_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = and_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x21
-****************************************************************************/
-static void x86emuOp_and_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AND\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = and_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = and_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = and_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = and_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = and_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = and_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x22
-****************************************************************************/
-static void x86emuOp_and_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AND\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = and_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = and_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = and_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = and_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x23
-****************************************************************************/
-static void x86emuOp_and_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AND\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_long(*destreg, srcval);
-            break;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_word(*destreg, srcval);
-            break;
-        }
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = and_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x24
-****************************************************************************/
-static void x86emuOp_and_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AND\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = and_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x25
-****************************************************************************/
-static void x86emuOp_and_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("AND\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("AND\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = and_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = and_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x26
-****************************************************************************/
-static void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("ES:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_SEGOVR_ES;
-    /*
-     * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
-     * opcode subroutines we do not want to do this.
-     */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x27
-****************************************************************************/
-static void x86emuOp_daa(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("DAA\n");
-    TRACE_AND_STEP();
-    M.x86.R_AL = daa_byte(M.x86.R_AL);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x28
-****************************************************************************/
-static void x86emuOp_sub_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SUB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = sub_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = sub_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = sub_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sub_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x29
-****************************************************************************/
-static void x86emuOp_sub_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SUB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sub_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sub_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sub_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sub_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sub_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = sub_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2a
-****************************************************************************/
-static void x86emuOp_sub_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SUB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sub_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sub_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sub_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = sub_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2b
-****************************************************************************/
-static void x86emuOp_sub_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SUB\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = sub_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2c
-****************************************************************************/
-static void x86emuOp_sub_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SUB\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = sub_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2d
-****************************************************************************/
-static void x86emuOp_sub_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("SUB\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("SUB\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = sub_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = sub_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2e
-****************************************************************************/
-static void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("CS:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_SEGOVR_CS;
-    /* note no DECODE_CLEAR_SEGOVR here. */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2f
-****************************************************************************/
-static void x86emuOp_das(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("DAS\n");
-    TRACE_AND_STEP();
-    M.x86.R_AL = das_byte(M.x86.R_AL);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x30
-****************************************************************************/
-static void x86emuOp_xor_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XOR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = xor_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = xor_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = xor_byte(destval, *srcreg);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = xor_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x31
-****************************************************************************/
-static void x86emuOp_xor_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XOR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = xor_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = xor_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = xor_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = xor_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = xor_long(destval, *srcreg);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = xor_word(destval, *srcreg);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x32
-****************************************************************************/
-static void x86emuOp_xor_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XOR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = xor_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = xor_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = xor_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = xor_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x33
-****************************************************************************/
-static void x86emuOp_xor_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XOR\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = xor_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x34
-****************************************************************************/
-static void x86emuOp_xor_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XOR\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    M.x86.R_AL = xor_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x35
-****************************************************************************/
-static void x86emuOp_xor_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XOR\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("XOR\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = xor_long(M.x86.R_EAX, srcval);
-    } else {
-        M.x86.R_AX = xor_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x36
-****************************************************************************/
-static void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("SS:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_SEGOVR_SS;
-    /* no DECODE_CLEAR_SEGOVR ! */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x37
-****************************************************************************/
-static void x86emuOp_aaa(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("AAA\n");
-    TRACE_AND_STEP();
-    M.x86.R_AX = aaa_word(M.x86.R_AX);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x38
-****************************************************************************/
-static void x86emuOp_cmp_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-    u8 *destreg, *srcreg;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("CMP\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(destval, *srcreg);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(destval, *srcreg);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(destval, *srcreg);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x39
-****************************************************************************/
-static void x86emuOp_cmp_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("CMP\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(destval, *srcreg);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(destval, *srcreg);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(destval, *srcreg);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(destval, *srcreg);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(destval, *srcreg);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(destval, *srcreg);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3a
-****************************************************************************/
-static void x86emuOp_cmp_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("CMP\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(*destreg, srcval);
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(*destreg, srcval);
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(*destreg, srcval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        cmp_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3b
-****************************************************************************/
-static void x86emuOp_cmp_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("CMP\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(*destreg, srcval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(*destreg, srcval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(*destreg, srcval);
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(*destreg, srcval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            cmp_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3c
-****************************************************************************/
-static void x86emuOp_cmp_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("CMP\tAL,");
-    srcval = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    cmp_byte(M.x86.R_AL, srcval);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3d
-****************************************************************************/
-static void x86emuOp_cmp_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("CMP\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("CMP\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        cmp_long(M.x86.R_EAX, srcval);
-    } else {
-        cmp_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3e
-****************************************************************************/
-static void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("DS:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_SEGOVR_DS;
-    /* NO DECODE_CLEAR_SEGOVR! */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3f
-****************************************************************************/
-static void x86emuOp_aas(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("AAS\n");
-    TRACE_AND_STEP();
-    M.x86.R_AX = aas_word(M.x86.R_AX);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x40
-****************************************************************************/
-static void x86emuOp_inc_AX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tEAX\n");
-    } else {
-        DECODE_PRINTF("INC\tAX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = inc_long(M.x86.R_EAX);
-    } else {
-        M.x86.R_AX = inc_word(M.x86.R_AX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x41
-****************************************************************************/
-static void x86emuOp_inc_CX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tECX\n");
-    } else {
-        DECODE_PRINTF("INC\tCX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ECX = inc_long(M.x86.R_ECX);
-    } else {
-        M.x86.R_CX = inc_word(M.x86.R_CX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x42
-****************************************************************************/
-static void x86emuOp_inc_DX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tEDX\n");
-    } else {
-        DECODE_PRINTF("INC\tDX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDX = inc_long(M.x86.R_EDX);
-    } else {
-        M.x86.R_DX = inc_word(M.x86.R_DX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x43
-****************************************************************************/
-static void x86emuOp_inc_BX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tEBX\n");
-    } else {
-        DECODE_PRINTF("INC\tBX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBX = inc_long(M.x86.R_EBX);
-    } else {
-        M.x86.R_BX = inc_word(M.x86.R_BX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x44
-****************************************************************************/
-static void x86emuOp_inc_SP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tESP\n");
-    } else {
-        DECODE_PRINTF("INC\tSP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESP = inc_long(M.x86.R_ESP);
-    } else {
-        M.x86.R_SP = inc_word(M.x86.R_SP);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x45
-****************************************************************************/
-static void x86emuOp_inc_BP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tEBP\n");
-    } else {
-        DECODE_PRINTF("INC\tBP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBP = inc_long(M.x86.R_EBP);
-    } else {
-        M.x86.R_BP = inc_word(M.x86.R_BP);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x46
-****************************************************************************/
-static void x86emuOp_inc_SI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tESI\n");
-    } else {
-        DECODE_PRINTF("INC\tSI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESI = inc_long(M.x86.R_ESI);
-    } else {
-        M.x86.R_SI = inc_word(M.x86.R_SI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x47
-****************************************************************************/
-static void x86emuOp_inc_DI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INC\tEDI\n");
-    } else {
-        DECODE_PRINTF("INC\tDI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDI = inc_long(M.x86.R_EDI);
-    } else {
-        M.x86.R_DI = inc_word(M.x86.R_DI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x48
-****************************************************************************/
-static void x86emuOp_dec_AX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tEAX\n");
-    } else {
-        DECODE_PRINTF("DEC\tAX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = dec_long(M.x86.R_EAX);
-    } else {
-        M.x86.R_AX = dec_word(M.x86.R_AX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x49
-****************************************************************************/
-static void x86emuOp_dec_CX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tECX\n");
-    } else {
-        DECODE_PRINTF("DEC\tCX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ECX = dec_long(M.x86.R_ECX);
-    } else {
-        M.x86.R_CX = dec_word(M.x86.R_CX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4a
-****************************************************************************/
-static void x86emuOp_dec_DX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tEDX\n");
-    } else {
-        DECODE_PRINTF("DEC\tDX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDX = dec_long(M.x86.R_EDX);
-    } else {
-        M.x86.R_DX = dec_word(M.x86.R_DX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4b
-****************************************************************************/
-static void x86emuOp_dec_BX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tEBX\n");
-    } else {
-        DECODE_PRINTF("DEC\tBX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBX = dec_long(M.x86.R_EBX);
-    } else {
-        M.x86.R_BX = dec_word(M.x86.R_BX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4c
-****************************************************************************/
-static void x86emuOp_dec_SP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tESP\n");
-    } else {
-        DECODE_PRINTF("DEC\tSP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESP = dec_long(M.x86.R_ESP);
-    } else {
-        M.x86.R_SP = dec_word(M.x86.R_SP);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4d
-****************************************************************************/
-static void x86emuOp_dec_BP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tEBP\n");
-    } else {
-        DECODE_PRINTF("DEC\tBP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBP = dec_long(M.x86.R_EBP);
-    } else {
-        M.x86.R_BP = dec_word(M.x86.R_BP);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4e
-****************************************************************************/
-static void x86emuOp_dec_SI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tESI\n");
-    } else {
-        DECODE_PRINTF("DEC\tSI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESI = dec_long(M.x86.R_ESI);
-    } else {
-        M.x86.R_SI = dec_word(M.x86.R_SI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4f
-****************************************************************************/
-static void x86emuOp_dec_DI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("DEC\tEDI\n");
-    } else {
-        DECODE_PRINTF("DEC\tDI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDI = dec_long(M.x86.R_EDI);
-    } else {
-        M.x86.R_DI = dec_word(M.x86.R_DI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x50
-****************************************************************************/
-static void x86emuOp_push_AX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tEAX\n");
-    } else {
-        DECODE_PRINTF("PUSH\tAX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_EAX);
-    } else {
-        push_word(M.x86.R_AX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x51
-****************************************************************************/
-static void x86emuOp_push_CX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tECX\n");
-    } else {
-        DECODE_PRINTF("PUSH\tCX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_ECX);
-    } else {
-        push_word(M.x86.R_CX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x52
-****************************************************************************/
-static void x86emuOp_push_DX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tEDX\n");
-    } else {
-        DECODE_PRINTF("PUSH\tDX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_EDX);
-    } else {
-        push_word(M.x86.R_DX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x53
-****************************************************************************/
-static void x86emuOp_push_BX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tEBX\n");
-    } else {
-        DECODE_PRINTF("PUSH\tBX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_EBX);
-    } else {
-        push_word(M.x86.R_BX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x54
-****************************************************************************/
-static void x86emuOp_push_SP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tESP\n");
-    } else {
-        DECODE_PRINTF("PUSH\tSP\n");
-    }
-    TRACE_AND_STEP();
-	/* Always push (E)SP, since we are emulating an i386 and above
-	 * processor. This is necessary as some BIOS'es use this to check
-	 * what type of processor is in the system.
-	 */
-	if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-		push_long(M.x86.R_ESP);
-	} else {
-		push_word((u16)(M.x86.R_SP));
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x55
-****************************************************************************/
-static void x86emuOp_push_BP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tEBP\n");
-    } else {
-        DECODE_PRINTF("PUSH\tBP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_EBP);
-    } else {
-        push_word(M.x86.R_BP);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x56
-****************************************************************************/
-static void x86emuOp_push_SI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tESI\n");
-    } else {
-        DECODE_PRINTF("PUSH\tSI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_ESI);
-    } else {
-        push_word(M.x86.R_SI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x57
-****************************************************************************/
-static void x86emuOp_push_DI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSH\tEDI\n");
-    } else {
-        DECODE_PRINTF("PUSH\tDI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(M.x86.R_EDI);
-    } else {
-        push_word(M.x86.R_DI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x58
-****************************************************************************/
-static void x86emuOp_pop_AX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tEAX\n");
-    } else {
-        DECODE_PRINTF("POP\tAX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = pop_long();
-    } else {
-        M.x86.R_AX = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x59
-****************************************************************************/
-static void x86emuOp_pop_CX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tECX\n");
-    } else {
-        DECODE_PRINTF("POP\tCX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ECX = pop_long();
-    } else {
-        M.x86.R_CX = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5a
-****************************************************************************/
-static void x86emuOp_pop_DX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tEDX\n");
-    } else {
-        DECODE_PRINTF("POP\tDX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDX = pop_long();
-    } else {
-        M.x86.R_DX = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5b
-****************************************************************************/
-static void x86emuOp_pop_BX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tEBX\n");
-    } else {
-        DECODE_PRINTF("POP\tBX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBX = pop_long();
-    } else {
-        M.x86.R_BX = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5c
-****************************************************************************/
-static void x86emuOp_pop_SP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tESP\n");
-    } else {
-        DECODE_PRINTF("POP\tSP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESP = pop_long();
-    } else {
-        M.x86.R_SP = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5d
-****************************************************************************/
-static void x86emuOp_pop_BP(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tEBP\n");
-    } else {
-        DECODE_PRINTF("POP\tBP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBP = pop_long();
-    } else {
-        M.x86.R_BP = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5e
-****************************************************************************/
-static void x86emuOp_pop_SI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tESI\n");
-    } else {
-        DECODE_PRINTF("POP\tSI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESI = pop_long();
-    } else {
-        M.x86.R_SI = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5f
-****************************************************************************/
-static void x86emuOp_pop_DI(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POP\tEDI\n");
-    } else {
-        DECODE_PRINTF("POP\tDI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDI = pop_long();
-    } else {
-        M.x86.R_DI = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x60
-****************************************************************************/
-static void x86emuOp_push_all(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSHAD\n");
-    } else {
-        DECODE_PRINTF("PUSHA\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        u32 old_sp = M.x86.R_ESP;
-
-        push_long(M.x86.R_EAX);
-        push_long(M.x86.R_ECX);
-        push_long(M.x86.R_EDX);
-        push_long(M.x86.R_EBX);
-        push_long(old_sp);
-        push_long(M.x86.R_EBP);
-        push_long(M.x86.R_ESI);
-        push_long(M.x86.R_EDI);
-    } else {
-        u16 old_sp = M.x86.R_SP;
-
-        push_word(M.x86.R_AX);
-        push_word(M.x86.R_CX);
-        push_word(M.x86.R_DX);
-        push_word(M.x86.R_BX);
-        push_word(old_sp);
-        push_word(M.x86.R_BP);
-        push_word(M.x86.R_SI);
-        push_word(M.x86.R_DI);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x61
-****************************************************************************/
-static void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POPAD\n");
-    } else {
-        DECODE_PRINTF("POPA\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDI = pop_long();
-        M.x86.R_ESI = pop_long();
-        M.x86.R_EBP = pop_long();
-        M.x86.R_ESP += 4;              /* skip ESP */
-        M.x86.R_EBX = pop_long();
-        M.x86.R_EDX = pop_long();
-        M.x86.R_ECX = pop_long();
-        M.x86.R_EAX = pop_long();
-    } else {
-        M.x86.R_DI = pop_word();
-        M.x86.R_SI = pop_word();
-        M.x86.R_BP = pop_word();
-        M.x86.R_SP += 2;               /* skip SP */
-        M.x86.R_BX = pop_word();
-        M.x86.R_DX = pop_word();
-        M.x86.R_CX = pop_word();
-        M.x86.R_AX = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/*opcode 0x62   ILLEGAL OP, calls x86emuOp_illegal_op() */
-/*opcode 0x63   ILLEGAL OP, calls x86emuOp_illegal_op() */
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x64
-****************************************************************************/
-static void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("FS:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_SEGOVR_FS;
-    /*
-     * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
-     * opcode subroutines we do not want to do this.
-     */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x65
-****************************************************************************/
-static void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("GS:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_SEGOVR_GS;
-    /*
-     * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
-     * opcode subroutines we do not want to do this.
-     */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x66 - prefix for 32-bit register
-****************************************************************************/
-static void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("DATA:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_PREFIX_DATA;
-    /* note no DECODE_CLEAR_SEGOVR here. */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x67 - prefix for 32-bit address
-****************************************************************************/
-static void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("ADDR:\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_PREFIX_ADDR;
-    /* note no DECODE_CLEAR_SEGOVR here. */
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x68
-****************************************************************************/
-static void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 imm;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        imm = fetch_long_imm();
-    } else {
-        imm = fetch_word_imm();
-    }
-    DECODE_PRINTF2("PUSH\t%x\n", imm);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(imm);
-    } else {
-        push_word((u16)imm);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x69
-****************************************************************************/
-static void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("IMUL\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-            u32 res_lo,res_hi;
-            s32 imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-            u32 res;
-            s16 imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            res = (s16)srcval * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-            u32 res_lo,res_hi;
-            s32 imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-            u32 res;
-            s16 imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            res = (s16)srcval * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-            u32 res_lo,res_hi;
-            s32 imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-            u32 res;
-            s16 imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            res = (s16)srcval * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-            u32 res_lo,res_hi;
-            s32 imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg,*srcreg;
-            u32 res;
-            s16 imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            res = (s16)*srcreg * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6a
-****************************************************************************/
-static void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1))
-{
-    s16 imm;
-
-    START_OF_INSTR();
-    imm = (s8)fetch_byte_imm();
-    DECODE_PRINTF2("PUSH\t%d\n", imm);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-	push_long((s32)imm);
-    } else {
-	push_word(imm);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6b
-****************************************************************************/
-static void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-    s8  imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("IMUL\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-            u32 res_lo,res_hi;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-            u32 res;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            res = (s16)srcval * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-            u32 res_lo,res_hi;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-            u32 res;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            res = (s16)srcval * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-            u32 res_lo,res_hi;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-            u32 res;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            res = (s16)srcval * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-            u32 res_lo,res_hi;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            TRACE_AND_STEP();
-            imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);
-            if (res_hi != 0) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u32)res_lo;
-        } else {
-            u16 *destreg,*srcreg;
-            u32 res;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            imm = fetch_byte_imm();
-            DECODE_PRINTF2(",%d\n", (s32)imm);
-            res = (s16)*srcreg * (s16)imm;
-            if (res > 0xFFFF) {
-                SET_FLAG(F_CF);
-                SET_FLAG(F_OF);
-            } else {
-                CLEAR_FLAG(F_CF);
-                CLEAR_FLAG(F_OF);
-            }
-            *destreg = (u16)res;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6c
-****************************************************************************/
-static void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("INSB\n");
-    ins(1);
-    TRACE_AND_STEP();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6d
-****************************************************************************/
-static void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("INSD\n");
-        ins(4);
-    } else {
-        DECODE_PRINTF("INSW\n");
-        ins(2);
-    }
-    TRACE_AND_STEP();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6e
-****************************************************************************/
-static void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("OUTSB\n");
-    outs(1);
-    TRACE_AND_STEP();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6f
-****************************************************************************/
-static void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("OUTSD\n");
-        outs(4);
-    } else {
-        DECODE_PRINTF("OUTSW\n");
-        outs(2);
-    }
-    TRACE_AND_STEP();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x70
-****************************************************************************/
-static void x86emuOp_jump_near_O(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if overflow flag is set */
-    START_OF_INSTR();
-    DECODE_PRINTF("JO\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_OF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x71
-****************************************************************************/
-static void x86emuOp_jump_near_NO(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if overflow is not set */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNO\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (!ACCESS_FLAG(F_OF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x72
-****************************************************************************/
-static void x86emuOp_jump_near_B(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if carry flag is set. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JB\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_CF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x73
-****************************************************************************/
-static void x86emuOp_jump_near_NB(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if carry flag is clear. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNB\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (!ACCESS_FLAG(F_CF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x74
-****************************************************************************/
-static void x86emuOp_jump_near_Z(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if zero flag is set. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JZ\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_ZF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x75
-****************************************************************************/
-static void x86emuOp_jump_near_NZ(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if zero flag is clear. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNZ\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (!ACCESS_FLAG(F_ZF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x76
-****************************************************************************/
-static void x86emuOp_jump_near_BE(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if carry flag is set or if the zero
-       flag is set. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JBE\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x77
-****************************************************************************/
-static void x86emuOp_jump_near_NBE(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if carry flag is clear and if the zero
-       flag is clear */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNBE\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (!(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x78
-****************************************************************************/
-static void x86emuOp_jump_near_S(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if sign flag is set */
-    START_OF_INSTR();
-    DECODE_PRINTF("JS\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_SF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x79
-****************************************************************************/
-static void x86emuOp_jump_near_NS(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if sign flag is clear */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNS\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (!ACCESS_FLAG(F_SF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7a
-****************************************************************************/
-static void x86emuOp_jump_near_P(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if parity flag is set (even parity) */
-    START_OF_INSTR();
-    DECODE_PRINTF("JP\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_PF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7b
-****************************************************************************/
-static void x86emuOp_jump_near_NP(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-
-    /* jump to byte offset if parity flag is clear (odd parity) */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNP\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (!ACCESS_FLAG(F_PF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7c
-****************************************************************************/
-static void x86emuOp_jump_near_L(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-    int sf, of;
-
-    /* jump to byte offset if sign flag not equal to overflow flag. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JL\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    sf = ACCESS_FLAG(F_SF) != 0;
-    of = ACCESS_FLAG(F_OF) != 0;
-    if (sf ^ of)
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7d
-****************************************************************************/
-static void x86emuOp_jump_near_NL(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-    int sf, of;
-
-    /* jump to byte offset if sign flag not equal to overflow flag. */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNL\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    sf = ACCESS_FLAG(F_SF) != 0;
-    of = ACCESS_FLAG(F_OF) != 0;
-    /* note: inverse of above, but using == instead of xor. */
-    if (sf == of)
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7e
-****************************************************************************/
-static void x86emuOp_jump_near_LE(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-    int sf, of;
-
-    /* jump to byte offset if sign flag not equal to overflow flag
-       or the zero flag is set */
-    START_OF_INSTR();
-    DECODE_PRINTF("JLE\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    sf = ACCESS_FLAG(F_SF) != 0;
-    of = ACCESS_FLAG(F_OF) != 0;
-    if ((sf ^ of) || ACCESS_FLAG(F_ZF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7f
-****************************************************************************/
-static void x86emuOp_jump_near_NLE(u8 X86EMU_UNUSED(op1))
-{
-    s8 offset;
-    u16 target;
-    int sf, of;
-
-    /* jump to byte offset if sign flag equal to overflow flag.
-       and the zero flag is clear */
-    START_OF_INSTR();
-    DECODE_PRINTF("JNLE\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + (s16)offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    sf = ACCESS_FLAG(F_SF) != 0;
-    of = ACCESS_FLAG(F_OF) != 0;
-    if ((sf == of) && !ACCESS_FLAG(F_ZF))
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-static u8 (*opc80_byte_operation[])(u8 d, u8 s) =
-{
-    add_byte,           /* 00 */
-    or_byte,            /* 01 */
-    adc_byte,           /* 02 */
-    sbb_byte,           /* 03 */
-    and_byte,           /* 04 */
-    sub_byte,           /* 05 */
-    xor_byte,           /* 06 */
-    cmp_byte,           /* 07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x80
-****************************************************************************/
-static void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 imm;
-    u8 destval;
-
-    /*
-     * Weirdo special case instruction format.  Part of the opcode
-     * held below in "RH".  Doubly nested case would result, except
-     * that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ADD\t");
-            break;
-        case 1:
-            DECODE_PRINTF("OR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("ADC\t");
-            break;
-        case 3:
-            DECODE_PRINTF("SBB\t");
-            break;
-        case 4:
-            DECODE_PRINTF("AND\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SUB\t");
-            break;
-        case 6:
-            DECODE_PRINTF("XOR\t");
-            break;
-        case 7:
-            DECODE_PRINTF("CMP\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2("%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc80_byte_operation[rh]) (destval, imm);
-        if (rh != 7)
-            store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2("%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc80_byte_operation[rh]) (destval, imm);
-        if (rh != 7)
-            store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2("%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc80_byte_operation[rh]) (destval, imm);
-        if (rh != 7)
-            store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2("%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc80_byte_operation[rh]) (*destreg, imm);
-        if (rh != 7)
-            *destreg = destval;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-static u16 (*opc81_word_operation[])(u16 d, u16 s) =
-{
-    add_word,           /*00 */
-    or_word,            /*01 */
-    adc_word,           /*02 */
-    sbb_word,           /*03 */
-    and_word,           /*04 */
-    sub_word,           /*05 */
-    xor_word,           /*06 */
-    cmp_word,           /*07 */
-};
-
-static u32 (*opc81_long_operation[])(u32 d, u32 s) =
-{
-    add_long,           /*00 */
-    or_long,            /*01 */
-    adc_long,           /*02 */
-    sbb_long,           /*03 */
-    and_long,           /*04 */
-    sub_long,           /*05 */
-    xor_long,           /*06 */
-    cmp_long,           /*07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x81
-****************************************************************************/
-static void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    /*
-     * Weirdo special case instruction format.  Part of the opcode
-     * held below in "RH".  Doubly nested case would result, except
-     * that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ADD\t");
-            break;
-        case 1:
-            DECODE_PRINTF("OR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("ADC\t");
-            break;
-        case 3:
-            DECODE_PRINTF("SBB\t");
-            break;
-        case 4:
-            DECODE_PRINTF("AND\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SUB\t");
-            break;
-        case 6:
-            DECODE_PRINTF("XOR\t");
-            break;
-        case 7:
-            DECODE_PRINTF("CMP\t");
-            break;
-        }
-    }
-#endif
-    /*
-     * Know operation, decode the mod byte to find the addressing 
-     * mode.
-     */
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval,imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_long_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_long(destoffset, destval);
-        } else {
-            u16 destval,imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_word_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval,imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_long_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_long(destoffset, destval);
-        } else {
-            u16 destval,imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_word_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval,imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_long_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_long(destoffset, destval);
-        } else {
-            u16 destval,imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_word_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 destval,imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            imm = fetch_long_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_long_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
-        } else {
-            u16 *destreg;
-            u16 destval,imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            imm = fetch_word_imm();
-            DECODE_PRINTF2("%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc81_word_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-static u8 (*opc82_byte_operation[])(u8 s, u8 d) =
-{
-    add_byte,           /*00 */
-    or_byte,            /*01 *//*YYY UNUSED ???? */
-    adc_byte,           /*02 */
-    sbb_byte,           /*03 */
-    and_byte,           /*04 *//*YYY UNUSED ???? */
-    sub_byte,           /*05 */
-    xor_byte,           /*06 *//*YYY UNUSED ???? */
-    cmp_byte,           /*07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x82
-****************************************************************************/
-static void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 imm;
-    u8 destval;
-
-    /*
-     * Weirdo special case instruction format.  Part of the opcode
-     * held below in "RH".  Doubly nested case would result, except
-     * that the decoded instruction Similar to opcode 81, except that
-     * the immediate byte is sign extended to a word length.
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ADD\t");
-            break;
-        case 1:
-            DECODE_PRINTF("OR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("ADC\t");
-            break;
-        case 3:
-            DECODE_PRINTF("SBB\t");
-            break;
-        case 4:
-            DECODE_PRINTF("AND\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SUB\t");
-            break;
-        case 6:
-            DECODE_PRINTF("XOR\t");
-            break;
-        case 7:
-            DECODE_PRINTF("CMP\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        destval = fetch_data_byte(destoffset);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc82_byte_operation[rh]) (destval, imm);
-        if (rh != 7)
-            store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        destval = fetch_data_byte(destoffset);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc82_byte_operation[rh]) (destval, imm);
-        if (rh != 7)
-            store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        destval = fetch_data_byte(destoffset);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc82_byte_operation[rh]) (destval, imm);
-        if (rh != 7)
-            store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", imm);
-        TRACE_AND_STEP();
-        destval = (*opc82_byte_operation[rh]) (*destreg, imm);
-        if (rh != 7)
-            *destreg = destval;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-static u16 (*opc83_word_operation[])(u16 s, u16 d) =
-{
-    add_word,           /*00 */
-    or_word,            /*01 *//*YYY UNUSED ???? */
-    adc_word,           /*02 */
-    sbb_word,           /*03 */
-    and_word,           /*04 *//*YYY UNUSED ???? */
-    sub_word,           /*05 */
-    xor_word,           /*06 *//*YYY UNUSED ???? */
-    cmp_word,           /*07 */
-};
-
-static u32 (*opc83_long_operation[])(u32 s, u32 d) =
-{
-    add_long,           /*00 */
-    or_long,            /*01 *//*YYY UNUSED ???? */
-    adc_long,           /*02 */
-    sbb_long,           /*03 */
-    and_long,           /*04 *//*YYY UNUSED ???? */
-    sub_long,           /*05 */
-    xor_long,           /*06 *//*YYY UNUSED ???? */
-    cmp_long,           /*07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x83
-****************************************************************************/
-static void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    /*
-     * Weirdo special case instruction format.  Part of the opcode
-     * held below in "RH".  Doubly nested case would result, except
-     * that the decoded instruction Similar to opcode 81, except that
-     * the immediate byte is sign extended to a word length.
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-       switch (rh) {
-        case 0:
-            DECODE_PRINTF("ADD\t");
-            break;
-        case 1:
-            DECODE_PRINTF("OR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("ADC\t");
-            break;
-        case 3:
-            DECODE_PRINTF("SBB\t");
-            break;
-        case 4:
-            DECODE_PRINTF("AND\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SUB\t");
-            break;
-        case 6:
-            DECODE_PRINTF("XOR\t");
-            break;
-        case 7:
-            DECODE_PRINTF("CMP\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval,imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            destval = fetch_data_long(destoffset);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_long_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_long(destoffset, destval);
-        } else {
-            u16 destval,imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            destval = fetch_data_word(destoffset);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_word_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval,imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            destval = fetch_data_long(destoffset);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_long_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_long(destoffset, destval);
-        } else {
-            u16 destval,imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            destval = fetch_data_word(destoffset);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_word_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval,imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            destval = fetch_data_long(destoffset);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_long_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_long(destoffset, destval);
-        } else {
-            u16 destval,imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            destval = fetch_data_word(destoffset);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_word_operation[rh]) (destval, imm);
-            if (rh != 7)
-                store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 destval,imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_long_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
-        } else {
-            u16 *destreg;
-            u16 destval,imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            imm = (s8) fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            destval = (*opc83_word_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x84
-****************************************************************************/
-static void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("TEST\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        test_byte(destval, *srcreg);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        test_byte(destval, *srcreg);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        test_byte(destval, *srcreg);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        test_byte(*destreg, *srcreg);
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x85
-****************************************************************************/
-static void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("TEST\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_long(destval, *srcreg);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_word(destval, *srcreg);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_long(destval, *srcreg);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_word(destval, *srcreg);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_long(destval, *srcreg);
-        } else {
-            u16 destval;
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_word(destval, *srcreg);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_long(*destreg, *srcreg);
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            test_word(*destreg, *srcreg);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x86
-****************************************************************************/
-static void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-    u8 destval;
-    u8 tmp;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XCHG\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        tmp = *srcreg;
-        *srcreg = destval;
-        destval = tmp;
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        tmp = *srcreg;
-        *srcreg = destval;
-        destval = tmp;
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        destval = fetch_data_byte(destoffset);
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        tmp = *srcreg;
-        *srcreg = destval;
-        destval = tmp;
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        tmp = *srcreg;
-        *srcreg = *destreg;
-        *destreg = tmp;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x87
-****************************************************************************/
-static void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XCHG\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *srcreg;
-            u32 destval,tmp;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = destval;
-            destval = tmp;
-            store_data_long(destoffset, destval);
-        } else {
-            u16 *srcreg;
-            u16 destval,tmp;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = destval;
-            destval = tmp;
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *srcreg;
-            u32 destval,tmp;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = destval;
-            destval = tmp;
-            store_data_long(destoffset, destval);
-        } else {
-            u16 *srcreg;
-            u16 destval,tmp;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = destval;
-            destval = tmp;
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *srcreg;
-            u32 destval,tmp;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_long(destoffset);
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = destval;
-            destval = tmp;
-            store_data_long(destoffset, destval);
-        } else {
-            u16 *srcreg;
-            u16 destval,tmp;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            destval = fetch_data_word(destoffset);
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = destval;
-            destval = tmp;
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-            u32 tmp;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = *destreg;
-            *destreg = tmp;
-        } else {
-            u16 *destreg,*srcreg;
-            u16 tmp;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            tmp = *srcreg;
-            *srcreg = *destreg;
-            *destreg = tmp;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x88
-****************************************************************************/
-static void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        store_data_byte(destoffset, *srcreg);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        store_data_byte(destoffset, *srcreg);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        store_data_byte(destoffset, *srcreg);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = *srcreg;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x89
-****************************************************************************/
-static void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u32 destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            store_data_long(destoffset, *srcreg);
-        } else {
-            u16 *srcreg;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            store_data_word(destoffset, *srcreg);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            store_data_long(destoffset, *srcreg);
-        } else {
-            u16 *srcreg;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            store_data_word(destoffset, *srcreg);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            store_data_long(destoffset, *srcreg);
-        } else {
-            u16 *srcreg;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            store_data_word(destoffset, *srcreg);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = *srcreg;
-        } else {
-            u16 *destreg,*srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = *srcreg;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8a
-****************************************************************************/
-static void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg, *srcreg;
-    uint srcoffset;
-    u8 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = srcval;
-        break;
-    case 1:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = srcval;
-        break;
-    case 2:
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_byte(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = srcval;
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = *srcreg;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8b
-****************************************************************************/
-static void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = srcval;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm00_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = srcval;
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = srcval;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm01_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = srcval;
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 srcval;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_long(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = srcval;
-        } else {
-            u16 *destreg;
-            u16 srcval;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcoffset = decode_rm10_address(rl);
-            srcval = fetch_data_word(srcoffset);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = srcval;
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg, *srcreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = *srcreg;
-        } else {
-            u16 *destreg, *srcreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rh);
-            DECODE_PRINTF(",");
-            srcreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = *srcreg;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8c
-****************************************************************************/
-static void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u16 *destreg, *srcreg;
-    uint destoffset;
-    u16 destval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",");
-        srcreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = *srcreg;
-        store_data_word(destoffset, destval);
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",");
-        srcreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = *srcreg;
-        store_data_word(destoffset, destval);
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",");
-        srcreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        destval = *srcreg;
-        store_data_word(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_WORD_REGISTER(rl);
-        DECODE_PRINTF(",");
-        srcreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = *srcreg;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8d
-****************************************************************************/
-static void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u16 *srcreg;
-    uint destoffset;
-
-/*
- * TODO: Need to handle address size prefix!
- *
- * lea  eax,[eax+ebx*2] ??
- */
-    
-    START_OF_INSTR();
-    DECODE_PRINTF("LEA\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        srcreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *srcreg = (u16)destoffset;
-        break;
-    case 1:
-        srcreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *srcreg = (u16)destoffset;
-        break;
-    case 2:
-        srcreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *srcreg = (u16)destoffset;
-        break;
-    case 3:                     /* register to register */
-        /* undefined.  Do nothing. */
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8e
-****************************************************************************/
-static void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u16 *destreg, *srcreg;
-    uint srcoffset;
-    u16 srcval;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        destreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        srcval = fetch_data_word(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = srcval;
-        break;
-    case 1:
-        destreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        srcval = fetch_data_word(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = srcval;
-        break;
-    case 2:
-        destreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        srcval = fetch_data_word(srcoffset);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = srcval;
-        break;
-    case 3:                     /* register to register */
-        destreg = decode_rm_seg_register(rh);
-        DECODE_PRINTF(",");
-        srcreg = DECODE_RM_WORD_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *destreg = *srcreg;
-        break;
-    }
-    /*
-     * Clean up, and reset all the R_xSP pointers to the correct
-     * locations.  This is about 3x too much overhead (doing all the
-     * segreg ptrs when only one is needed, but this instruction
-     * *cannot* be that common, and this isn't too much work anyway.
-     */
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8f
-****************************************************************************/
-static void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("POP\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    if (rh != 0) {
-        DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");
-        HALT_SYS();
-    }
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = pop_long();
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = pop_word();
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = pop_long();
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = pop_word();
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = pop_long();
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            destval = pop_word();
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = pop_long();
-        } else {
-            u16 *destreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = pop_word();
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x90
-****************************************************************************/
-static void x86emuOp_nop(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("NOP\n");
-    TRACE_AND_STEP();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x91
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_CX(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,ECX\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,CX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_ECX;
-        M.x86.R_ECX = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_CX;
-        M.x86.R_CX = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x92
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_DX(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,EDX\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,DX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_EDX;
-        M.x86.R_EDX = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_DX;
-        M.x86.R_DX = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x93
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_BX(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,EBX\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,BX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_EBX;
-        M.x86.R_EBX = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_BX;
-        M.x86.R_BX = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x94
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_SP(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,ESP\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,SP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_ESP;
-        M.x86.R_ESP = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_SP;
-        M.x86.R_SP = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x95
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_BP(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,EBP\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,BP\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_EBP;
-        M.x86.R_EBP = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_BP;
-        M.x86.R_BP = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x96
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_SI(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,ESI\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,SI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_ESI;
-        M.x86.R_ESI = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_SI;
-        M.x86.R_SI = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x97
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_DI(u8 X86EMU_UNUSED(op1))
-{
-    u32 tmp;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("XCHG\tEAX,EDI\n");
-    } else {
-        DECODE_PRINTF("XCHG\tAX,DI\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        tmp = M.x86.R_EAX;
-        M.x86.R_EAX = M.x86.R_EDI;
-        M.x86.R_EDI = tmp;
-    } else {
-        tmp = M.x86.R_AX;
-        M.x86.R_AX = M.x86.R_DI;
-        M.x86.R_DI = (u16)tmp;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x98
-****************************************************************************/
-static void x86emuOp_cbw(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("CWDE\n");
-    } else {
-        DECODE_PRINTF("CBW\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        if (M.x86.R_AX & 0x8000) {
-            M.x86.R_EAX |= 0xffff0000;
-        } else {
-            M.x86.R_EAX &= 0x0000ffff;
-        }
-    } else {
-        if (M.x86.R_AL & 0x80) {
-            M.x86.R_AH = 0xff;
-        } else {
-            M.x86.R_AH = 0x0;
-        }
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x99
-****************************************************************************/
-static void x86emuOp_cwd(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("CDQ\n");
-    } else {
-        DECODE_PRINTF("CWD\n");
-    }
-    DECODE_PRINTF("CWD\n");
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        if (M.x86.R_EAX & 0x80000000) {
-            M.x86.R_EDX = 0xffffffff;
-        } else {
-            M.x86.R_EDX = 0x0;
-        }
-    } else {
-        if (M.x86.R_AX & 0x8000) {
-            M.x86.R_DX = 0xffff;
-        } else {
-            M.x86.R_DX = 0x0;
-        }
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9a
-****************************************************************************/
-static void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 farseg, faroff;
-
-    START_OF_INSTR();
-	DECODE_PRINTF("CALL\t");
-	faroff = fetch_word_imm();
-	farseg = fetch_word_imm();
-	DECODE_PRINTF2("%04x:", farseg);
-	DECODE_PRINTF2("%04x\n", faroff);
-	CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR ");
-
-    /* XXX
-     * 
-     * Hooked interrupt vectors calling into our "BIOS" will cause
-     * problems unless all intersegment stuff is checked for BIOS
-     * access.  Check needed here.  For moment, let it alone.
-     */
-    TRACE_AND_STEP();
-    push_word(M.x86.R_CS);
-    M.x86.R_CS = farseg;
-    push_word(M.x86.R_IP);
-    M.x86.R_IP = faroff;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9b
-****************************************************************************/
-static void x86emuOp_wait(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("WAIT");
-    TRACE_AND_STEP();
-    /* NADA.  */
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9c
-****************************************************************************/
-static void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1))
-{
-    u32 flags;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("PUSHFD\n");
-    } else {
-        DECODE_PRINTF("PUSHF\n");
-    }
-    TRACE_AND_STEP();
-
-    /* clear out *all* bits not representing flags, and turn on real bits */
-    flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON;
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        push_long(flags);
-    } else {
-        push_word((u16)flags);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9d
-****************************************************************************/
-static void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("POPFD\n");
-    } else {
-        DECODE_PRINTF("POPF\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EFLG = pop_long();
-    } else {
-        M.x86.R_FLG = pop_word();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9e
-****************************************************************************/
-static void x86emuOp_sahf(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("SAHF\n");
-    TRACE_AND_STEP();
-    /* clear the lower bits of the flag register */
-    M.x86.R_FLG &= 0xffffff00;
-    /* or in the AH register into the flags register */
-    M.x86.R_FLG |= M.x86.R_AH;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9f
-****************************************************************************/
-static void x86emuOp_lahf(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("LAHF\n");
-    TRACE_AND_STEP();
-	M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff);
-    /*undocumented TC++ behavior??? Nope.  It's documented, but
-       you have too look real hard to notice it. */
-    M.x86.R_AH |= 0x2;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa0
-****************************************************************************/
-static void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 offset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tAL,");
-    offset = fetch_word_imm();
-    DECODE_PRINTF2("[%04x]\n", offset);
-    TRACE_AND_STEP();
-    M.x86.R_AL = fetch_data_byte(offset);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa1
-****************************************************************************/
-static void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 offset;
-
-    START_OF_INSTR();
-    offset = fetch_word_imm();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset);
-    } else {
-        DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset);
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = fetch_data_long(offset);
-    } else {
-        M.x86.R_AX = fetch_data_word(offset);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa2
-****************************************************************************/
-static void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 offset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    offset = fetch_word_imm();
-    DECODE_PRINTF2("[%04x],AL\n", offset);
-    TRACE_AND_STEP();
-    store_data_byte(offset, M.x86.R_AL);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa3
-****************************************************************************/
-static void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 offset;
-
-    START_OF_INSTR();
-    offset = fetch_word_imm();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset);
-    } else {
-        DECODE_PRINTF2("MOV\t[%04x],AX\n", offset);
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        store_data_long(offset, M.x86.R_EAX);
-    } else {
-        store_data_word(offset, M.x86.R_AX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa4
-****************************************************************************/
-static void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1))
-{
-    u8  val;
-    u32 count;
-    int inc;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOVS\tBYTE\n");
-    if (ACCESS_FLAG(F_DF))   /* down */
-        inc = -1;
-    else
-        inc = 1;
-    TRACE_AND_STEP();
-    count = 1;
-    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
-        /* dont care whether REPE or REPNE */
-        /* move them until CX is ZERO. */
-        count = M.x86.R_CX;
-        M.x86.R_CX = 0;
-        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
-    }
-    while (count--) {
-        val = fetch_data_byte(M.x86.R_SI);
-        store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val);
-        M.x86.R_SI += inc;
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa5
-****************************************************************************/
-static void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1))
-{
-    u32 val;
-    int inc;
-    u32 count;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOVS\tDWORD\n");
-        if (ACCESS_FLAG(F_DF))      /* down */
-            inc = -4;
-        else
-            inc = 4;
-    } else {
-        DECODE_PRINTF("MOVS\tWORD\n");
-        if (ACCESS_FLAG(F_DF))      /* down */
-            inc = -2;
-        else
-            inc = 2;
-    }
-    TRACE_AND_STEP();
-    count = 1;
-    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
-        /* dont care whether REPE or REPNE */
-        /* move them until CX is ZERO. */
-        count = M.x86.R_CX;
-        M.x86.R_CX = 0;
-        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
-    }
-    while (count--) {
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            val = fetch_data_long(M.x86.R_SI);
-            store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val);
-        } else {
-            val = fetch_data_word(M.x86.R_SI);
-            store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val);
-        }
-        M.x86.R_SI += inc;
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa6
-****************************************************************************/
-static void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1))
-{
-    s8 val1, val2;
-    int inc;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("CMPS\tBYTE\n");
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_DF))   /* down */
-        inc = -1;
-    else
-        inc = 1;
-
-    if (M.x86.mode & SYSMODE_PREFIX_REPE) {
-        /* REPE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            val1 = fetch_data_byte(M.x86.R_SI);
-            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
-                     cmp_byte(val1, val2);
-            M.x86.R_CX -= 1;
-            M.x86.R_SI += inc;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF) == 0)
-                break;
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPE;
-    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
-        /* REPNE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            val1 = fetch_data_byte(M.x86.R_SI);
-            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_byte(val1, val2);
-            M.x86.R_CX -= 1;
-            M.x86.R_SI += inc;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF))
-                break;          /* zero flag set means equal */
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
-    } else {
-        val1 = fetch_data_byte(M.x86.R_SI);
-        val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
-        cmp_byte(val1, val2);
-        M.x86.R_SI += inc;
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa7
-****************************************************************************/
-static void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1))
-{
-    u32 val1,val2;
-    int inc;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("CMPS\tDWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -4;
-        else
-            inc = 4;
-    } else {
-        DECODE_PRINTF("CMPS\tWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -2;
-        else
-            inc = 2;
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_REPE) {
-        /* REPE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                val1 = fetch_data_long(M.x86.R_SI);
-                val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_long(val1, val2);
-            } else {
-                val1 = fetch_data_word(M.x86.R_SI);
-                val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_word((u16)val1, (u16)val2);
-            }
-            M.x86.R_CX -= 1;
-            M.x86.R_SI += inc;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF) == 0)
-                break;
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPE;
-    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
-        /* REPNE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                val1 = fetch_data_long(M.x86.R_SI);
-                val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_long(val1, val2);
-            } else {
-                val1 = fetch_data_word(M.x86.R_SI);
-                val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_word((u16)val1, (u16)val2);
-            }
-            M.x86.R_CX -= 1;
-            M.x86.R_SI += inc;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF))
-                break;          /* zero flag set means equal */
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
-    } else {
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            val1 = fetch_data_long(M.x86.R_SI);
-            val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_long(val1, val2);
-        } else {
-            val1 = fetch_data_word(M.x86.R_SI);
-            val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_word((u16)val1, (u16)val2);
-        }
-        M.x86.R_SI += inc;
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa8
-****************************************************************************/
-static void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("TEST\tAL,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%04x\n", imm);
-    TRACE_AND_STEP();
-	test_byte(M.x86.R_AL, (u8)imm);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa9
-****************************************************************************/
-static void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("TEST\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("TEST\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        test_long(M.x86.R_EAX, srcval);
-    } else {
-        test_word(M.x86.R_AX, (u16)srcval);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xaa
-****************************************************************************/
-static void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1))
-{
-    int inc;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("STOS\tBYTE\n");
-    if (ACCESS_FLAG(F_DF))   /* down */
-        inc = -1;
-    else
-        inc = 1;
-    TRACE_AND_STEP();
-    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
-        /* dont care whether REPE or REPNE */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);
-            M.x86.R_CX -= 1;
-            M.x86.R_DI += inc;
-        }
-        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
-    } else {
-        store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xab
-****************************************************************************/
-static void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1))
-{
-    int inc;
-    u32 count;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("STOS\tDWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -4;
-        else
-            inc = 4;
-    } else {
-        DECODE_PRINTF("STOS\tWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -2;
-        else
-            inc = 2;
-    }
-    TRACE_AND_STEP();
-    count = 1;
-    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
-        /* dont care whether REPE or REPNE */
-        /* move them until CX is ZERO. */
-        count = M.x86.R_CX;
-        M.x86.R_CX = 0;
-        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
-    }
-    while (count--) {
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX);
-        } else {
-            store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX);
-        }
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xac
-****************************************************************************/
-static void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1))
-{
-    int inc;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("LODS\tBYTE\n");
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_DF))   /* down */
-        inc = -1;
-    else
-        inc = 1;
-    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
-        /* dont care whether REPE or REPNE */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            M.x86.R_AL = fetch_data_byte(M.x86.R_SI);
-            M.x86.R_CX -= 1;
-            M.x86.R_SI += inc;
-        }
-        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
-    } else {
-        M.x86.R_AL = fetch_data_byte(M.x86.R_SI);
-        M.x86.R_SI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xad
-****************************************************************************/
-static void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1))
-{
-    int inc;
-    u32 count;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("LODS\tDWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -4;
-        else
-            inc = 4;
-    } else {
-        DECODE_PRINTF("LODS\tWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -2;
-        else
-            inc = 2;
-    }
-    TRACE_AND_STEP();
-    count = 1;
-    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
-        /* dont care whether REPE or REPNE */
-        /* move them until CX is ZERO. */
-        count = M.x86.R_CX;
-        M.x86.R_CX = 0;
-        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
-    }
-    while (count--) {
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            M.x86.R_EAX = fetch_data_long(M.x86.R_SI);
-        } else {
-            M.x86.R_AX = fetch_data_word(M.x86.R_SI);
-        }
-        M.x86.R_SI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xae
-****************************************************************************/
-static void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1))
-{
-    s8 val2;
-    int inc;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("SCAS\tBYTE\n");
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_DF))   /* down */
-        inc = -1;
-    else
-        inc = 1;
-    if (M.x86.mode & SYSMODE_PREFIX_REPE) {
-        /* REPE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_byte(M.x86.R_AL, val2);
-            M.x86.R_CX -= 1;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF) == 0)
-                break;
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPE;
-    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
-        /* REPNE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_byte(M.x86.R_AL, val2);
-            M.x86.R_CX -= 1;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF))
-                break;          /* zero flag set means equal */
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
-    } else {
-        val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
-        cmp_byte(M.x86.R_AL, val2);
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xaf
-****************************************************************************/
-static void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1))
-{
-    int inc;
-    u32 val;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("SCAS\tDWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -4;
-        else
-            inc = 4;
-    } else {
-        DECODE_PRINTF("SCAS\tWORD\n");
-        if (ACCESS_FLAG(F_DF))   /* down */
-            inc = -2;
-        else
-            inc = 2;
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_REPE) {
-        /* REPE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_long(M.x86.R_EAX, val);
-            } else {
-                val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_word(M.x86.R_AX, (u16)val);
-            }
-            M.x86.R_CX -= 1;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF) == 0)
-                break;
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPE;
-    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
-        /* REPNE  */
-        /* move them until CX is ZERO. */
-        while (M.x86.R_CX != 0) {
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_long(M.x86.R_EAX, val);
-            } else {
-                val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
-                cmp_word(M.x86.R_AX, (u16)val);
-            }
-            M.x86.R_CX -= 1;
-            M.x86.R_DI += inc;
-            if (ACCESS_FLAG(F_ZF))
-                break;          /* zero flag set means equal */
-        }
-        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
-    } else {
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_long(M.x86.R_EAX, val);
-        } else {
-            val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
-            cmp_word(M.x86.R_AX, (u16)val);
-        }
-        M.x86.R_DI += inc;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb0
-****************************************************************************/
-static void x86emuOp_mov_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tAL,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_AL = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb1
-****************************************************************************/
-static void x86emuOp_mov_byte_CL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tCL,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_CL = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb2
-****************************************************************************/
-static void x86emuOp_mov_byte_DL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tDL,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_DL = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb3
-****************************************************************************/
-static void x86emuOp_mov_byte_BL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tBL,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_BL = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb4
-****************************************************************************/
-static void x86emuOp_mov_byte_AH_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tAH,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_AH = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb5
-****************************************************************************/
-static void x86emuOp_mov_byte_CH_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tCH,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_CH = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb6
-****************************************************************************/
-static void x86emuOp_mov_byte_DH_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tDH,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_DH = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb7
-****************************************************************************/
-static void x86emuOp_mov_byte_BH_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\tBH,");
-    imm = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", imm);
-    TRACE_AND_STEP();
-    M.x86.R_BH = imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb8
-****************************************************************************/
-static void x86emuOp_mov_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tEAX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tAX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = srcval;
-    } else {
-        M.x86.R_AX = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb9
-****************************************************************************/
-static void x86emuOp_mov_word_CX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tECX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tCX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ECX = srcval;
-    } else {
-        M.x86.R_CX = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xba
-****************************************************************************/
-static void x86emuOp_mov_word_DX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tEDX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tDX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDX = srcval;
-    } else {
-        M.x86.R_DX = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbb
-****************************************************************************/
-static void x86emuOp_mov_word_BX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tEBX,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tBX,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBX = srcval;
-    } else {
-        M.x86.R_BX = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbc
-****************************************************************************/
-static void x86emuOp_mov_word_SP_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tESP,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tSP,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESP = srcval;
-    } else {
-        M.x86.R_SP = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbd
-****************************************************************************/
-static void x86emuOp_mov_word_BP_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tEBP,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tBP,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EBP = srcval;
-    } else {
-        M.x86.R_BP = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbe
-****************************************************************************/
-static void x86emuOp_mov_word_SI_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tESI,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tSI,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_ESI = srcval;
-    } else {
-        M.x86.R_SI = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbf
-****************************************************************************/
-static void x86emuOp_mov_word_DI_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u32 srcval;
-
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("MOV\tEDI,");
-        srcval = fetch_long_imm();
-    } else {
-        DECODE_PRINTF("MOV\tDI,");
-        srcval = fetch_word_imm();
-    }
-    DECODE_PRINTF2("%x\n", srcval);
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EDI = srcval;
-    } else {
-        M.x86.R_DI = (u16)srcval;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/* used by opcodes c0, d0, and d2. */
-static u8(*opcD0_byte_operation[])(u8 d, u8 s) =
-{
-    rol_byte,
-    ror_byte,
-    rcl_byte,
-    rcr_byte,
-    shl_byte,
-    shr_byte,
-    shl_byte,           /* sal_byte === shl_byte  by definition */
-    sar_byte,
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc0
-****************************************************************************/
-static void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 destval;
-    u8 amt;
-
-    /*
-     * Yet another weirdo special case instruction format.  Part of
-     * the opcode held below in "RH".  Doubly nested case would
-     * result, except that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ROL\t");
-            break;
-        case 1:
-            DECODE_PRINTF("ROR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("RCL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("RCR\t");
-            break;
-        case 4:
-            DECODE_PRINTF("SHL\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SHR\t");
-            break;
-        case 6:
-            DECODE_PRINTF("SAL\t");
-            break;
-        case 7:
-            DECODE_PRINTF("SAR\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        amt = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", amt);
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, amt);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        amt = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", amt);
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, amt);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        amt = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", amt);
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, amt);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        amt = fetch_byte_imm();
-        DECODE_PRINTF2(",%x\n", amt);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (*destreg, amt);
-        *destreg = destval;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/* used by opcodes c1, d1, and d3. */
-static u16(*opcD1_word_operation[])(u16 s, u8 d) =
-{
-    rol_word,
-    ror_word,
-    rcl_word,
-    rcr_word,
-    shl_word,
-    shr_word,
-    shl_word,           /* sal_byte === shl_byte  by definition */
-    sar_word,
-};
-
-/* used by opcodes c1, d1, and d3. */
-static u32 (*opcD1_long_operation[])(u32 s, u8 d) =
-{
-    rol_long,
-    ror_long,
-    rcl_long,
-    rcr_long,
-    shl_long,
-    shr_long,
-    shl_long,           /* sal_byte === shl_byte  by definition */
-    sar_long,
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc1
-****************************************************************************/
-static void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-    u8 amt;
-
-    /*
-     * Yet another weirdo special case instruction format.  Part of
-     * the opcode held below in "RH".  Doubly nested case would
-     * result, except that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ROL\t");
-            break;
-        case 1:
-            DECODE_PRINTF("ROR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("RCL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("RCR\t");
-            break;
-        case 4:
-            DECODE_PRINTF("SHL\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SHR\t");
-            break;
-        case 6:
-            DECODE_PRINTF("SAL\t");
-            break;
-        case 7:
-            DECODE_PRINTF("SAR\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, amt);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, amt);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, amt);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, amt);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, amt);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, amt);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            TRACE_AND_STEP();
-            *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);
-        } else {
-            u16 *destreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            amt = fetch_byte_imm();
-            DECODE_PRINTF2(",%x\n", amt);
-            TRACE_AND_STEP();
-            *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc2
-****************************************************************************/
-static void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("RET\t");
-    imm = fetch_word_imm();
-    DECODE_PRINTF2("%x\n", imm);
-	RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip);
-	TRACE_AND_STEP();
-    M.x86.R_IP = pop_word();
-    M.x86.R_SP += imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc3
-****************************************************************************/
-static void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("RET\n");
-	RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip);
-	TRACE_AND_STEP();
-    M.x86.R_IP = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc4
-****************************************************************************/
-static void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rh, rl;
-    u16 *dstreg;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("LES\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        dstreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *dstreg = fetch_data_word(srcoffset);
-        M.x86.R_ES = fetch_data_word(srcoffset + 2);
-        break;
-    case 1:
-        dstreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *dstreg = fetch_data_word(srcoffset);
-        M.x86.R_ES = fetch_data_word(srcoffset + 2);
-        break;
-    case 2:
-        dstreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *dstreg = fetch_data_word(srcoffset);
-        M.x86.R_ES = fetch_data_word(srcoffset + 2);
-        break;
-    case 3:                     /* register to register */
-        /* UNDEFINED! */
-        TRACE_AND_STEP();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc5
-****************************************************************************/
-static void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rh, rl;
-    u16 *dstreg;
-    uint srcoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("LDS\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:
-        dstreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm00_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *dstreg = fetch_data_word(srcoffset);
-        M.x86.R_DS = fetch_data_word(srcoffset + 2);
-        break;
-    case 1:
-        dstreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm01_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *dstreg = fetch_data_word(srcoffset);
-        M.x86.R_DS = fetch_data_word(srcoffset + 2);
-        break;
-    case 2:
-        dstreg = DECODE_RM_WORD_REGISTER(rh);
-        DECODE_PRINTF(",");
-        srcoffset = decode_rm10_address(rl);
-        DECODE_PRINTF("\n");
-        TRACE_AND_STEP();
-        *dstreg = fetch_data_word(srcoffset);
-        M.x86.R_DS = fetch_data_word(srcoffset + 2);
-        break;
-    case 3:                     /* register to register */
-        /* UNDEFINED! */
-        TRACE_AND_STEP();
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc6
-****************************************************************************/
-static void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    if (rh != 0) {
-        DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n");
-        HALT_SYS();
-    }
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%2x\n", imm);
-        TRACE_AND_STEP();
-        store_data_byte(destoffset, imm);
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%2x\n", imm);
-        TRACE_AND_STEP();
-        store_data_byte(destoffset, imm);
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%2x\n", imm);
-        TRACE_AND_STEP();
-        store_data_byte(destoffset, imm);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        imm = fetch_byte_imm();
-        DECODE_PRINTF2(",%2x\n", imm);
-        TRACE_AND_STEP();
-        *destreg = imm;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc7
-****************************************************************************/
-static void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("MOV\t");
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    if (rh != 0) {
-        DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");
-        HALT_SYS();
-    }
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            store_data_long(destoffset, imm);
-        } else {
-            u16 imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            store_data_word(destoffset, imm);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            store_data_long(destoffset, imm);
-        } else {
-            u16 imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            store_data_word(destoffset, imm);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 imm;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            store_data_long(destoffset, imm);
-        } else {
-            u16 imm;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            store_data_word(destoffset, imm);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-			u32 *destreg;
-			u32 imm;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            imm = fetch_long_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            *destreg = imm;
-        } else {
-			u16 *destreg;
-			u16 imm;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            imm = fetch_word_imm();
-            DECODE_PRINTF2(",%x\n", imm);
-            TRACE_AND_STEP();
-            *destreg = imm;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc8
-****************************************************************************/
-static void x86emuOp_enter(u8 X86EMU_UNUSED(op1))
-{
-    u16 local,frame_pointer;
-    u8  nesting;
-    int i;
-
-    START_OF_INSTR();
-    local = fetch_word_imm();
-    nesting = fetch_byte_imm();
-    DECODE_PRINTF2("ENTER %x\n", local);
-    DECODE_PRINTF2(",%x\n", nesting);
-    TRACE_AND_STEP();
-    push_word(M.x86.R_BP);
-    frame_pointer = M.x86.R_SP;
-    if (nesting > 0) {
-        for (i = 1; i < nesting; i++) {
-            M.x86.R_BP -= 2;
-            push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP));
-            }
-        push_word(frame_pointer);
-        }
-    M.x86.R_BP = frame_pointer;
-    M.x86.R_SP = (u16)(M.x86.R_SP - local);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc9
-****************************************************************************/
-static void x86emuOp_leave(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("LEAVE\n");
-    TRACE_AND_STEP();
-    M.x86.R_SP = M.x86.R_BP;
-    M.x86.R_BP = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xca
-****************************************************************************/
-static void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 imm;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("RETF\t");
-    imm = fetch_word_imm();
-    DECODE_PRINTF2("%x\n", imm);
-	RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip);
-	TRACE_AND_STEP();
-    M.x86.R_IP = pop_word();
-    M.x86.R_CS = pop_word();
-    M.x86.R_SP += imm;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcb
-****************************************************************************/
-static void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("RETF\n");
-	RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip);
-	TRACE_AND_STEP();
-    M.x86.R_IP = pop_word();
-    M.x86.R_CS = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcc
-****************************************************************************/
-static void x86emuOp_int3(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("INT 3\n");
-    TRACE_AND_STEP();
-    if (_X86EMU_intrTab[3]) {
-	(*_X86EMU_intrTab[3])(3);
-    } else {
-        push_word((u16)M.x86.R_FLG);
-        CLEAR_FLAG(F_IF);
-        CLEAR_FLAG(F_TF);
-        push_word(M.x86.R_CS);
-        M.x86.R_CS = mem_access_word(3 * 4 + 2);
-        push_word(M.x86.R_IP);
-        M.x86.R_IP = mem_access_word(3 * 4);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcd
-****************************************************************************/
-static void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 intnum;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("INT\t");
-    intnum = fetch_byte_imm();
-    DECODE_PRINTF2("%x\n", intnum);
-    TRACE_AND_STEP();
-    if (_X86EMU_intrTab[intnum]) {
-	(*_X86EMU_intrTab[intnum])(intnum);
-    } else {
-        push_word((u16)M.x86.R_FLG);
-        CLEAR_FLAG(F_IF);
-        CLEAR_FLAG(F_TF);
-        push_word(M.x86.R_CS);
-        M.x86.R_CS = mem_access_word(intnum * 4 + 2);
-        push_word(M.x86.R_IP);
-        M.x86.R_IP = mem_access_word(intnum * 4);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xce
-****************************************************************************/
-static void x86emuOp_into(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("INTO\n");
-    TRACE_AND_STEP();
-    if (ACCESS_FLAG(F_OF)) {
-	if (_X86EMU_intrTab[4]) {
-	    (*_X86EMU_intrTab[4])(4);
-        } else {
-            push_word((u16)M.x86.R_FLG);
-            CLEAR_FLAG(F_IF);
-            CLEAR_FLAG(F_TF);
-            push_word(M.x86.R_CS);
-            M.x86.R_CS = mem_access_word(4 * 4 + 2);
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = mem_access_word(4 * 4);
-        }
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcf
-****************************************************************************/
-static void x86emuOp_iret(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("IRET\n");
-
-    TRACE_AND_STEP();
-
-    M.x86.R_IP = pop_word();
-    M.x86.R_CS = pop_word();
-    M.x86.R_FLG = pop_word();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd0
-****************************************************************************/
-static void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 destval;
-
-    /*
-     * Yet another weirdo special case instruction format.  Part of
-     * the opcode held below in "RH".  Doubly nested case would
-     * result, except that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the
-           above test is done twice. */
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ROL\t");
-            break;
-        case 1:
-            DECODE_PRINTF("ROR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("RCL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("RCR\t");
-            break;
-        case 4:
-            DECODE_PRINTF("SHL\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SHR\t");
-            break;
-        case 6:
-            DECODE_PRINTF("SAL\t");
-            break;
-        case 7:
-            DECODE_PRINTF("SAR\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",1\n");
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, 1);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",1\n");
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, 1);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",1\n");
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, 1);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",1\n");
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (*destreg, 1);
-        *destreg = destval;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd1
-****************************************************************************/
-static void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    /*
-     * Yet another weirdo special case instruction format.  Part of
-     * the opcode held below in "RH".  Doubly nested case would
-     * result, except that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the
-           above test is done twice. */
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ROL\t");
-            break;
-        case 1:
-            DECODE_PRINTF("ROR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("RCL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("RCR\t");
-            break;
-        case 4:
-            DECODE_PRINTF("SHL\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SHR\t");
-            break;
-        case 6:
-            DECODE_PRINTF("SAL\t");
-            break;
-        case 7:
-            DECODE_PRINTF("SAR\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",1\n");
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, 1);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",1\n");
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, 1);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",1\n");
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, 1);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",1\n");
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, 1);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",1\n");
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, 1);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("BYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",1\n");
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, 1);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-			u32 destval;
-			u32 *destreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",1\n");
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (*destreg, 1);
-            *destreg = destval;
-        } else {
-			u16 destval;
-			u16 *destreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",1\n");
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (*destreg, 1);
-            *destreg = destval;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd2
-****************************************************************************/
-static void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 destval;
-    u8 amt;
-
-    /*
-     * Yet another weirdo special case instruction format.  Part of
-     * the opcode held below in "RH".  Doubly nested case would
-     * result, except that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ROL\t");
-            break;
-        case 1:
-            DECODE_PRINTF("ROR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("RCL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("RCR\t");
-            break;
-        case 4:
-            DECODE_PRINTF("SHL\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SHR\t");
-            break;
-        case 6:
-            DECODE_PRINTF("SAL\t");
-            break;
-        case 7:
-            DECODE_PRINTF("SAR\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    amt = M.x86.R_CL;
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF(",CL\n");
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, amt);
-        store_data_byte(destoffset, destval);
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF(",CL\n");
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, amt);
-        store_data_byte(destoffset, destval);
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF(",CL\n");
-        destval = fetch_data_byte(destoffset);
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (destval, amt);
-        store_data_byte(destoffset, destval);
-        break;
-    case 3:                     /* register to register */
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF(",CL\n");
-        TRACE_AND_STEP();
-        destval = (*opcD0_byte_operation[rh]) (*destreg, amt);
-        *destreg = destval;
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd3
-****************************************************************************/
-static void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-    u8 amt;
-
-    /*
-     * Yet another weirdo special case instruction format.  Part of
-     * the opcode held below in "RH".  Doubly nested case would
-     * result, except that the decoded instruction
-     */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("ROL\t");
-            break;
-        case 1:
-            DECODE_PRINTF("ROR\t");
-            break;
-        case 2:
-            DECODE_PRINTF("RCL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("RCR\t");
-            break;
-        case 4:
-            DECODE_PRINTF("SHL\t");
-            break;
-        case 5:
-            DECODE_PRINTF("SHR\t");
-            break;
-        case 6:
-            DECODE_PRINTF("SAL\t");
-            break;
-        case 7:
-            DECODE_PRINTF("SAR\t");
-            break;
-        }
-    }
-#endif
-    /* know operation, decode the mod byte to find the addressing
-       mode. */
-    amt = M.x86.R_CL;
-    switch (mod) {
-    case 0:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",CL\n");
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, amt);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",CL\n");
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, amt);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 1:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",CL\n");
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, amt);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",CL\n");
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, amt);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 2:
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 destval;
-
-            DECODE_PRINTF("DWORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",CL\n");
-            destval = fetch_data_long(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_long_operation[rh]) (destval, amt);
-            store_data_long(destoffset, destval);
-        } else {
-            u16 destval;
-
-            DECODE_PRINTF("WORD PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",CL\n");
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            destval = (*opcD1_word_operation[rh]) (destval, amt);
-            store_data_word(destoffset, destval);
-        }
-        break;
-    case 3:                     /* register to register */
-        if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-
-            destreg = DECODE_RM_LONG_REGISTER(rl);
-            DECODE_PRINTF(",CL\n");
-            TRACE_AND_STEP();
-            *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);
-        } else {
-            u16 *destreg;
-
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF(",CL\n");
-            TRACE_AND_STEP();
-            *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd4
-****************************************************************************/
-static void x86emuOp_aam(u8 X86EMU_UNUSED(op1))
-{
-    u8 a;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AAM\n");
-    a = fetch_byte_imm();      /* this is a stupid encoding. */
-    if (a != 10) {
-	/* fix: add base decoding
-	   aam_word(u8 val, int base a) */
-        DECODE_PRINTF("ERROR DECODING AAM\n");
-        TRACE_REGS();
-        HALT_SYS();
-    }
-    TRACE_AND_STEP();
-    /* note the type change here --- returning AL and AH in AX. */
-    M.x86.R_AX = aam_word(M.x86.R_AL);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd5
-****************************************************************************/
-static void x86emuOp_aad(u8 X86EMU_UNUSED(op1))
-{
-    u8 a;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("AAD\n");
-    a = fetch_byte_imm();
-    if (a != 10) {
-	/* fix: add base decoding
-	   aad_word(u16 val, int base a) */
-        DECODE_PRINTF("ERROR DECODING AAM\n");
-        TRACE_REGS();
-        HALT_SYS();
-    }
-    TRACE_AND_STEP();
-    M.x86.R_AX = aad_word(M.x86.R_AX);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/* opcode 0xd6 ILLEGAL OPCODE */
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd7
-****************************************************************************/
-static void x86emuOp_xlat(u8 X86EMU_UNUSED(op1))
-{
-    u16 addr;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("XLAT\n");
-    TRACE_AND_STEP();
-	addr = (u16)(M.x86.R_BX + (u8)M.x86.R_AL);
-    M.x86.R_AL = fetch_data_byte(addr);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/* instuctions  D8 .. DF are in i87_ops.c */
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe0
-****************************************************************************/
-static void x86emuOp_loopne(u8 X86EMU_UNUSED(op1))
-{
-    s16 ip;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("LOOPNE\t");
-    ip = (s8) fetch_byte_imm();
-    ip += (s16) M.x86.R_IP;
-    DECODE_PRINTF2("%04x\n", ip);
-    TRACE_AND_STEP();
-    M.x86.R_CX -= 1;
-    if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF))      /* CX != 0 and !ZF */
-        M.x86.R_IP = ip;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe1
-****************************************************************************/
-static void x86emuOp_loope(u8 X86EMU_UNUSED(op1))
-{
-    s16 ip;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("LOOPE\t");
-    ip = (s8) fetch_byte_imm();
-    ip += (s16) M.x86.R_IP;
-    DECODE_PRINTF2("%04x\n", ip);
-    TRACE_AND_STEP();
-    M.x86.R_CX -= 1;
-    if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF))       /* CX != 0 and ZF */
-        M.x86.R_IP = ip;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe2
-****************************************************************************/
-static void x86emuOp_loop(u8 X86EMU_UNUSED(op1))
-{
-    s16 ip;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("LOOP\t");
-    ip = (s8) fetch_byte_imm();
-    ip += (s16) M.x86.R_IP;
-    DECODE_PRINTF2("%04x\n", ip);
-    TRACE_AND_STEP();
-    M.x86.R_CX -= 1;
-    if (M.x86.R_CX != 0)
-        M.x86.R_IP = ip;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe3
-****************************************************************************/
-static void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1))
-{
-    u16 target;
-    s8  offset;
-
-    /* jump to byte offset if overflow flag is set */
-    START_OF_INSTR();
-    DECODE_PRINTF("JCXZ\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    if (M.x86.R_CX == 0)
-        M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe4
-****************************************************************************/
-static void x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 port;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("IN\t");
-	port = (u8) fetch_byte_imm();
-    DECODE_PRINTF2("%x,AL\n", port);
-    TRACE_AND_STEP();
-    M.x86.R_AL = (*sys_inb)(port);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe5
-****************************************************************************/
-static void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u8 port;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("IN\t");
-	port = (u8) fetch_byte_imm();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF2("EAX,%x\n", port);
-    } else {
-        DECODE_PRINTF2("AX,%x\n", port);
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = (*sys_inl)(port);
-    } else {
-        M.x86.R_AX = (*sys_inw)(port);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe6
-****************************************************************************/
-static void x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1))
-{
-    u8 port;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OUT\t");
-	port = (u8) fetch_byte_imm();
-    DECODE_PRINTF2("%x,AL\n", port);
-    TRACE_AND_STEP();
-    (*sys_outb)(port, M.x86.R_AL);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe7
-****************************************************************************/
-static void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1))
-{
-    u8 port;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("OUT\t");
-	port = (u8) fetch_byte_imm();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF2("%x,EAX\n", port);
-    } else {
-        DECODE_PRINTF2("%x,AX\n", port);
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        (*sys_outl)(port, M.x86.R_EAX);
-    } else {
-        (*sys_outw)(port, M.x86.R_AX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe8
-****************************************************************************/
-static void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1))
-{
-    s16 ip;
-
-    START_OF_INSTR();
-	DECODE_PRINTF("CALL\t");
-	ip = (s16) fetch_word_imm();
-	ip += (s16) M.x86.R_IP;    /* CHECK SIGN */
-	DECODE_PRINTF2("%04x\n", (u16)ip);
-	CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, "");
-    TRACE_AND_STEP();
-    push_word(M.x86.R_IP);
-    M.x86.R_IP = ip;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xe9
-****************************************************************************/
-static void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1))
-{
-    int ip;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("JMP\t");
-    ip = (s16)fetch_word_imm();
-    ip += (s16)M.x86.R_IP;
-    DECODE_PRINTF2("%04x\n", (u16)ip);
-    TRACE_AND_STEP();
-    M.x86.R_IP = (u16)ip;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xea
-****************************************************************************/
-static void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 cs, ip;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("JMP\tFAR ");
-    ip = fetch_word_imm();
-    cs = fetch_word_imm();
-    DECODE_PRINTF2("%04x:", cs);
-    DECODE_PRINTF2("%04x\n", ip);
-    TRACE_AND_STEP();
-    M.x86.R_IP = ip;
-    M.x86.R_CS = cs;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xeb
-****************************************************************************/
-static void x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1))
-{
-    u16 target;
-    s8 offset;
-
-    START_OF_INSTR();
-    DECODE_PRINTF("JMP\t");
-    offset = (s8)fetch_byte_imm();
-    target = (u16)(M.x86.R_IP + offset);
-    DECODE_PRINTF2("%x\n", target);
-    TRACE_AND_STEP();
-    M.x86.R_IP = target;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xec
-****************************************************************************/
-static void x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("IN\tAL,DX\n");
-    TRACE_AND_STEP();
-    M.x86.R_AL = (*sys_inb)(M.x86.R_DX);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xed
-****************************************************************************/
-static void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("IN\tEAX,DX\n");
-    } else {
-        DECODE_PRINTF("IN\tAX,DX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        M.x86.R_EAX = (*sys_inl)(M.x86.R_DX);
-    } else {
-        M.x86.R_AX = (*sys_inw)(M.x86.R_DX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xee
-****************************************************************************/
-static void x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("OUT\tDX,AL\n");
-    TRACE_AND_STEP();
-    (*sys_outb)(M.x86.R_DX, M.x86.R_AL);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xef
-****************************************************************************/
-static void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        DECODE_PRINTF("OUT\tDX,EAX\n");
-    } else {
-        DECODE_PRINTF("OUT\tDX,AX\n");
-    }
-    TRACE_AND_STEP();
-    if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-        (*sys_outl)(M.x86.R_DX, M.x86.R_EAX);
-    } else {
-        (*sys_outw)(M.x86.R_DX, M.x86.R_AX);
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf0
-****************************************************************************/
-static void x86emuOp_lock(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("LOCK:\n");
-    TRACE_AND_STEP();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/*opcode 0xf1 ILLEGAL OPERATION */
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf2
-****************************************************************************/
-static void x86emuOp_repne(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("REPNE\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_PREFIX_REPNE;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf3
-****************************************************************************/
-static void x86emuOp_repe(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("REPE\n");
-    TRACE_AND_STEP();
-    M.x86.mode |= SYSMODE_PREFIX_REPE;
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf4
-****************************************************************************/
-static void x86emuOp_halt(u8 X86EMU_UNUSED(op1))
-{
-    START_OF_INSTR();
-    DECODE_PRINTF("HALT\n");
-    TRACE_AND_STEP();
-    HALT_SYS();
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf5
-****************************************************************************/
-static void x86emuOp_cmc(u8 X86EMU_UNUSED(op1))
-{
-    /* complement the carry flag. */
-    START_OF_INSTR();
-    DECODE_PRINTF("CMC\n");
-    TRACE_AND_STEP();
-    TOGGLE_FLAG(F_CF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf6
-****************************************************************************/
-static void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    u8 *destreg;
-    uint destoffset;
-    u8 destval, srcval;
-
-    /* long, drawn out code follows.  Double switch for a total
-       of 32 cases.  */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:                     /* mod=00 */
-        switch (rh) {
-        case 0:         /* test byte imm */
-            DECODE_PRINTF("TEST\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF(",");
-            srcval = fetch_byte_imm();
-            DECODE_PRINTF2("%02x\n", srcval);
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            test_byte(destval, srcval);
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            DECODE_PRINTF("NOT\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = not_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 3:
-            DECODE_PRINTF("NEG\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = neg_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 4:
-            DECODE_PRINTF("MUL\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            mul_byte(destval);
-            break;
-        case 5:
-            DECODE_PRINTF("IMUL\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            imul_byte(destval);
-            break;
-        case 6:
-            DECODE_PRINTF("DIV\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            div_byte(destval);
-            break;
-        case 7:
-            DECODE_PRINTF("IDIV\tBYTE PTR ");
-            destoffset = decode_rm00_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            idiv_byte(destval);
-            break;
-        }
-        break;                  /* end mod==00 */
-    case 1:                     /* mod=01 */
-        switch (rh) {
-        case 0:         /* test byte imm */
-            DECODE_PRINTF("TEST\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF(",");
-            srcval = fetch_byte_imm();
-            DECODE_PRINTF2("%02x\n", srcval);
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            test_byte(destval, srcval);
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            DECODE_PRINTF("NOT\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = not_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 3:
-            DECODE_PRINTF("NEG\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = neg_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 4:
-            DECODE_PRINTF("MUL\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            mul_byte(destval);
-            break;
-        case 5:
-            DECODE_PRINTF("IMUL\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            imul_byte(destval);
-            break;
-        case 6:
-            DECODE_PRINTF("DIV\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            div_byte(destval);
-            break;
-        case 7:
-            DECODE_PRINTF("IDIV\tBYTE PTR ");
-            destoffset = decode_rm01_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            idiv_byte(destval);
-            break;
-        }
-        break;                  /* end mod==01 */
-    case 2:                     /* mod=10 */
-        switch (rh) {
-        case 0:         /* test byte imm */
-            DECODE_PRINTF("TEST\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF(",");
-            srcval = fetch_byte_imm();
-            DECODE_PRINTF2("%02x\n", srcval);
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            test_byte(destval, srcval);
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            DECODE_PRINTF("NOT\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = not_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 3:
-            DECODE_PRINTF("NEG\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = neg_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 4:
-            DECODE_PRINTF("MUL\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            mul_byte(destval);
-            break;
-        case 5:
-            DECODE_PRINTF("IMUL\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            imul_byte(destval);
-            break;
-        case 6:
-            DECODE_PRINTF("DIV\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            div_byte(destval);
-            break;
-        case 7:
-            DECODE_PRINTF("IDIV\tBYTE PTR ");
-            destoffset = decode_rm10_address(rl);
-            DECODE_PRINTF("\n");
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            idiv_byte(destval);
-            break;
-        }
-        break;                  /* end mod==10 */
-    case 3:                     /* mod=11 */
-        switch (rh) {
-        case 0:         /* test byte imm */
-            DECODE_PRINTF("TEST\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF(",");
-            srcval = fetch_byte_imm();
-            DECODE_PRINTF2("%02x\n", srcval);
-            TRACE_AND_STEP();
-            test_byte(*destreg, srcval);
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            DECODE_PRINTF("NOT\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = not_byte(*destreg);
-            break;
-        case 3:
-            DECODE_PRINTF("NEG\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            *destreg = neg_byte(*destreg);
-            break;
-        case 4:
-            DECODE_PRINTF("MUL\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            mul_byte(*destreg);      /*!!!  */
-            break;
-        case 5:
-            DECODE_PRINTF("IMUL\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            imul_byte(*destreg);
-            break;
-        case 6:
-            DECODE_PRINTF("DIV\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            div_byte(*destreg);
-            break;
-        case 7:
-            DECODE_PRINTF("IDIV\t");
-            destreg = DECODE_RM_BYTE_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            idiv_byte(*destreg);
-            break;
-        }
-        break;                  /* end mod==11 */
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf7
-****************************************************************************/
-static void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rl, rh;
-    uint destoffset;
-
-    /* long, drawn out code follows.  Double switch for a total
-       of 32 cases.  */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-    switch (mod) {
-    case 0:                     /* mod=00 */
-        switch (rh) {
-        case 0:         /* test word imm */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval,srcval;
-
-                DECODE_PRINTF("TEST\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_long_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                test_long(destval, srcval);
-            } else {
-                u16 destval,srcval;
-
-                DECODE_PRINTF("TEST\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_word_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                test_word(destval, srcval);
-            }
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n");
-            HALT_SYS();
-            break;
-        case 2:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("NOT\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = not_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("NOT\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = not_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 3:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("NEG\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = neg_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("NEG\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = neg_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 4:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("MUL\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                mul_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("MUL\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                mul_word(destval);
-            }
-            break;
-        case 5:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("IMUL\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                imul_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("IMUL\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                imul_word(destval);
-            }
-            break;
-        case 6:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("DIV\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                div_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("DIV\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                div_word(destval);
-            }
-            break;
-        case 7:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("IDIV\tDWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                idiv_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("IDIV\tWORD PTR ");
-                destoffset = decode_rm00_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                idiv_word(destval);
-            }
-            break;
-        }
-        break;                  /* end mod==00 */
-    case 1:                     /* mod=01 */
-        switch (rh) {
-        case 0:         /* test word imm */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval,srcval;
-
-                DECODE_PRINTF("TEST\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_long_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                test_long(destval, srcval);
-            } else {
-                u16 destval,srcval;
-
-                DECODE_PRINTF("TEST\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_word_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                test_word(destval, srcval);
-            }
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("NOT\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = not_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("NOT\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = not_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 3:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("NEG\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = neg_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("NEG\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = neg_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 4:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("MUL\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                mul_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("MUL\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                mul_word(destval);
-            }
-            break;
-        case 5:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("IMUL\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                imul_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("IMUL\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                imul_word(destval);
-            }
-            break;
-        case 6:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("DIV\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                div_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("DIV\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                div_word(destval);
-            }
-            break;
-        case 7:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("IDIV\tDWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                idiv_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("IDIV\tWORD PTR ");
-                destoffset = decode_rm01_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                idiv_word(destval);
-            }
-            break;
-        }
-        break;                  /* end mod==01 */
-    case 2:                     /* mod=10 */
-        switch (rh) {
-        case 0:         /* test word imm */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval,srcval;
-
-                DECODE_PRINTF("TEST\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_long_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                test_long(destval, srcval);
-            } else {
-                u16 destval,srcval;
-
-                DECODE_PRINTF("TEST\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_word_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                test_word(destval, srcval);
-            }
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("NOT\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = not_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("NOT\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = not_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 3:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("NEG\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = neg_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("NEG\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = neg_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 4:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("MUL\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                mul_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("MUL\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                mul_word(destval);
-            }
-            break;
-        case 5:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("IMUL\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                imul_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("IMUL\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                imul_word(destval);
-            }
-            break;
-        case 6:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("DIV\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                div_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("DIV\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                div_word(destval);
-            }
-            break;
-        case 7:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                DECODE_PRINTF("IDIV\tDWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                idiv_long(destval);
-            } else {
-                u16 destval;
-
-                DECODE_PRINTF("IDIV\tWORD PTR ");
-                destoffset = decode_rm10_address(rl);
-                DECODE_PRINTF("\n");
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                idiv_word(destval);
-            }
-            break;
-        }
-        break;                  /* end mod==10 */
-    case 3:                     /* mod=11 */
-        switch (rh) {
-        case 0:         /* test word imm */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-                u32 srcval;
-
-                DECODE_PRINTF("TEST\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_long_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                TRACE_AND_STEP();
-                test_long(*destreg, srcval);
-            } else {
-                u16 *destreg;
-                u16 srcval;
-
-                DECODE_PRINTF("TEST\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF(",");
-                srcval = fetch_word_imm();
-                DECODE_PRINTF2("%x\n", srcval);
-                TRACE_AND_STEP();
-                test_word(*destreg, srcval);
-            }
-            break;
-        case 1:
-            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
-            HALT_SYS();
-            break;
-        case 2:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                DECODE_PRINTF("NOT\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = not_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                DECODE_PRINTF("NOT\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = not_word(*destreg);
-            }
-            break;
-        case 3:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                DECODE_PRINTF("NEG\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = neg_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                DECODE_PRINTF("NEG\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = neg_word(*destreg);
-            }
-            break;
-        case 4:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                DECODE_PRINTF("MUL\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                mul_long(*destreg);      /*!!!  */
-            } else {
-                u16 *destreg;
-
-                DECODE_PRINTF("MUL\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                mul_word(*destreg);      /*!!!  */
-            }
-            break;
-        case 5:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                DECODE_PRINTF("IMUL\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                imul_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                DECODE_PRINTF("IMUL\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                imul_word(*destreg);
-            }
-            break;
-        case 6:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                DECODE_PRINTF("DIV\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                div_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                DECODE_PRINTF("DIV\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                div_word(*destreg);
-            }
-            break;
-        case 7:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                DECODE_PRINTF("IDIV\t");
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                idiv_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                DECODE_PRINTF("IDIV\t");
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                idiv_word(*destreg);
-            }
-            break;
-        }
-        break;                  /* end mod==11 */
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf8
-****************************************************************************/
-static void x86emuOp_clc(u8 X86EMU_UNUSED(op1))
-{
-    /* clear the carry flag. */
-    START_OF_INSTR();
-    DECODE_PRINTF("CLC\n");
-    TRACE_AND_STEP();
-    CLEAR_FLAG(F_CF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xf9
-****************************************************************************/
-static void x86emuOp_stc(u8 X86EMU_UNUSED(op1))
-{
-    /* set the carry flag. */
-    START_OF_INSTR();
-    DECODE_PRINTF("STC\n");
-    TRACE_AND_STEP();
-    SET_FLAG(F_CF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xfa
-****************************************************************************/
-static void x86emuOp_cli(u8 X86EMU_UNUSED(op1))
-{
-    /* clear interrupts. */
-    START_OF_INSTR();
-    DECODE_PRINTF("CLI\n");
-    TRACE_AND_STEP();
-    CLEAR_FLAG(F_IF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xfb
-****************************************************************************/
-static void x86emuOp_sti(u8 X86EMU_UNUSED(op1))
-{
-    /* enable  interrupts. */
-    START_OF_INSTR();
-    DECODE_PRINTF("STI\n");
-    TRACE_AND_STEP();
-    SET_FLAG(F_IF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xfc
-****************************************************************************/
-static void x86emuOp_cld(u8 X86EMU_UNUSED(op1))
-{
-    /* clear interrupts. */
-    START_OF_INSTR();
-    DECODE_PRINTF("CLD\n");
-    TRACE_AND_STEP();
-    CLEAR_FLAG(F_DF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xfd
-****************************************************************************/
-static void x86emuOp_std(u8 X86EMU_UNUSED(op1))
-{
-    /* clear interrupts. */
-    START_OF_INSTR();
-    DECODE_PRINTF("STD\n");
-    TRACE_AND_STEP();
-    SET_FLAG(F_DF);
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xfe
-****************************************************************************/
-static void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rh, rl;
-    u8 destval;
-    uint destoffset;
-    u8 *destreg;
-
-    /* Yet another special case instruction. */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the 
-           above test is done twice. */
-
-        switch (rh) {
-        case 0:
-            DECODE_PRINTF("INC\t");
-            break;
-        case 1:
-            DECODE_PRINTF("DEC\t");
-            break;
-        case 2:
-        case 3:
-        case 4:
-        case 5:
-        case 6:
-        case 7:
-            DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod);
-            HALT_SYS();
-            break;
-        }
-    }
-#endif
-    switch (mod) {
-    case 0:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:         /* inc word ptr ... */
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = inc_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 1:         /* dec word ptr ... */
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = dec_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        }
-        break;
-    case 1:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = inc_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 1:
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = dec_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        }
-        break;
-    case 2:
-        DECODE_PRINTF("BYTE PTR ");
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = inc_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        case 1:
-            destval = fetch_data_byte(destoffset);
-            TRACE_AND_STEP();
-            destval = dec_byte(destval);
-            store_data_byte(destoffset, destval);
-            break;
-        }
-        break;
-    case 3:
-        destreg = DECODE_RM_BYTE_REGISTER(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:
-            TRACE_AND_STEP();
-            *destreg = inc_byte(*destreg);
-            break;
-        case 1:
-            TRACE_AND_STEP();
-            *destreg = dec_byte(*destreg);
-            break;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xff
-****************************************************************************/
-static void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1))
-{
-    int mod, rh, rl;
-    uint destoffset = 0;
-	u16 *destreg;
-	u16 destval,destval2;
-
-    /* Yet another special case instruction. */
-    START_OF_INSTR();
-    FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
-    if (DEBUG_DECODE()) {
-        /* XXX DECODE_PRINTF may be changed to something more
-           general, so that it is important to leave the strings
-           in the same format, even though the result is that the
-           above test is done twice. */
-
-        switch (rh) {
-        case 0:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                DECODE_PRINTF("INC\tDWORD PTR ");
-            } else {
-                DECODE_PRINTF("INC\tWORD PTR ");
-            }
-            break;
-        case 1:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                DECODE_PRINTF("DEC\tDWORD PTR ");
-            } else {
-                DECODE_PRINTF("DEC\tWORD PTR ");
-            }
-            break;
-        case 2:
-            DECODE_PRINTF("CALL\t");
-            break;
-        case 3:
-            DECODE_PRINTF("CALL\tFAR ");
-            break;
-        case 4:
-            DECODE_PRINTF("JMP\t");
-            break;
-        case 5:
-            DECODE_PRINTF("JMP\tFAR ");
-            break;
-        case 6:
-            DECODE_PRINTF("PUSH\t");
-            break;
-        case 7:
-            DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t");
-            HALT_SYS();
-            break;
-        }
-    }
-#endif
-    switch (mod) {
-    case 0:
-        destoffset = decode_rm00_address(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:         /* inc word ptr ... */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = inc_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = inc_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 1:         /* dec word ptr ... */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = dec_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = dec_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 2:         /* call word ptr ... */
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = destval;
-            break;
-        case 3:         /* call far ptr ... */
-            destval = fetch_data_word(destoffset);
-            destval2 = fetch_data_word(destoffset + 2);
-            TRACE_AND_STEP();
-            push_word(M.x86.R_CS);
-            M.x86.R_CS = destval2;
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = destval;
-            break;
-        case 4:         /* jmp word ptr ... */
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            M.x86.R_IP = destval;
-            break;
-        case 5:         /* jmp far ptr ... */
-            destval = fetch_data_word(destoffset);
-            destval2 = fetch_data_word(destoffset + 2);
-            TRACE_AND_STEP();
-            M.x86.R_IP = destval;
-            M.x86.R_CS = destval2;
-            break;
-        case 6:         /*  push word ptr ... */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                push_long(destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                push_word(destval);
-            }
-            break;
-        }
-        break;
-    case 1:
-        destoffset = decode_rm01_address(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = inc_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = inc_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 1:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = dec_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = dec_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 2:         /* call word ptr ... */
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = destval;
-            break;
-        case 3:         /* call far ptr ... */
-            destval = fetch_data_word(destoffset);
-            destval2 = fetch_data_word(destoffset + 2);
-            TRACE_AND_STEP();
-            push_word(M.x86.R_CS);
-            M.x86.R_CS = destval2;
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = destval;
-            break;
-        case 4:         /* jmp word ptr ... */
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            M.x86.R_IP = destval;
-            break;
-        case 5:         /* jmp far ptr ... */
-            destval = fetch_data_word(destoffset);
-            destval2 = fetch_data_word(destoffset + 2);
-            TRACE_AND_STEP();
-            M.x86.R_IP = destval;
-            M.x86.R_CS = destval2;
-            break;
-        case 6:         /*  push word ptr ... */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                push_long(destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                push_word(destval);
-            }
-            break;
-        }
-        break;
-    case 2:
-        destoffset = decode_rm10_address(rl);
-        DECODE_PRINTF("\n");
-        switch (rh) {
-        case 0:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = inc_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = inc_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 1:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                destval = dec_long(destval);
-                store_data_long(destoffset, destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                destval = dec_word(destval);
-                store_data_word(destoffset, destval);
-            }
-            break;
-        case 2:         /* call word ptr ... */
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = destval;
-            break;
-        case 3:         /* call far ptr ... */
-            destval = fetch_data_word(destoffset);
-            destval2 = fetch_data_word(destoffset + 2);
-            TRACE_AND_STEP();
-            push_word(M.x86.R_CS);
-            M.x86.R_CS = destval2;
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = destval;
-            break;
-        case 4:         /* jmp word ptr ... */
-            destval = fetch_data_word(destoffset);
-            TRACE_AND_STEP();
-            M.x86.R_IP = destval;
-            break;
-        case 5:         /* jmp far ptr ... */
-            destval = fetch_data_word(destoffset);
-            destval2 = fetch_data_word(destoffset + 2);
-            TRACE_AND_STEP();
-            M.x86.R_IP = destval;
-            M.x86.R_CS = destval2;
-            break;
-        case 6:         /*  push word ptr ... */
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 destval;
-
-                destval = fetch_data_long(destoffset);
-                TRACE_AND_STEP();
-                push_long(destval);
-            } else {
-                u16 destval;
-
-                destval = fetch_data_word(destoffset);
-                TRACE_AND_STEP();
-                push_word(destval);
-            }
-            break;
-        }
-        break;
-    case 3:
-        switch (rh) {
-        case 0:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = inc_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = inc_word(*destreg);
-            }
-            break;
-        case 1:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = dec_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                *destreg = dec_word(*destreg);
-            }
-            break;
-        case 2:         /* call word ptr ... */
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            push_word(M.x86.R_IP);
-            M.x86.R_IP = *destreg;
-            break;
-        case 3:         /* jmp far ptr ... */
-            DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n");
-            TRACE_AND_STEP();
-            HALT_SYS();
-            break;
-
-        case 4:         /* jmp  ... */
-            destreg = DECODE_RM_WORD_REGISTER(rl);
-            DECODE_PRINTF("\n");
-            TRACE_AND_STEP();
-            M.x86.R_IP = (u16) (*destreg);
-            break;
-        case 5:         /* jmp far ptr ... */
-            DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n");
-            TRACE_AND_STEP();
-            HALT_SYS();
-            break;
-        case 6:
-            if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-                u32 *destreg;
-
-                destreg = DECODE_RM_LONG_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                push_long(*destreg);
-            } else {
-                u16 *destreg;
-
-                destreg = DECODE_RM_WORD_REGISTER(rl);
-                DECODE_PRINTF("\n");
-                TRACE_AND_STEP();
-                push_word(*destreg);
-            }
-            break;
-        }
-        break;
-    }
-    DECODE_CLEAR_SEGOVR();
-    END_OF_INSTR();
-}
-
-/***************************************************************************
- * Single byte operation code table:
- **************************************************************************/
-void (*x86emu_optab[256])(u8) =
-{
-/*  0x00 */ x86emuOp_add_byte_RM_R,
-/*  0x01 */ x86emuOp_add_word_RM_R,
-/*  0x02 */ x86emuOp_add_byte_R_RM,
-/*  0x03 */ x86emuOp_add_word_R_RM,
-/*  0x04 */ x86emuOp_add_byte_AL_IMM,
-/*  0x05 */ x86emuOp_add_word_AX_IMM,
-/*  0x06 */ x86emuOp_push_ES,
-/*  0x07 */ x86emuOp_pop_ES,
-
-/*  0x08 */ x86emuOp_or_byte_RM_R,
-/*  0x09 */ x86emuOp_or_word_RM_R,
-/*  0x0a */ x86emuOp_or_byte_R_RM,
-/*  0x0b */ x86emuOp_or_word_R_RM,
-/*  0x0c */ x86emuOp_or_byte_AL_IMM,
-/*  0x0d */ x86emuOp_or_word_AX_IMM,
-/*  0x0e */ x86emuOp_push_CS,
-/*  0x0f */ x86emuOp_two_byte,
-
-/*  0x10 */ x86emuOp_adc_byte_RM_R,
-/*  0x11 */ x86emuOp_adc_word_RM_R,
-/*  0x12 */ x86emuOp_adc_byte_R_RM,
-/*  0x13 */ x86emuOp_adc_word_R_RM,
-/*  0x14 */ x86emuOp_adc_byte_AL_IMM,
-/*  0x15 */ x86emuOp_adc_word_AX_IMM,
-/*  0x16 */ x86emuOp_push_SS,
-/*  0x17 */ x86emuOp_pop_SS,
-
-/*  0x18 */ x86emuOp_sbb_byte_RM_R,
-/*  0x19 */ x86emuOp_sbb_word_RM_R,
-/*  0x1a */ x86emuOp_sbb_byte_R_RM,
-/*  0x1b */ x86emuOp_sbb_word_R_RM,
-/*  0x1c */ x86emuOp_sbb_byte_AL_IMM,
-/*  0x1d */ x86emuOp_sbb_word_AX_IMM,
-/*  0x1e */ x86emuOp_push_DS,
-/*  0x1f */ x86emuOp_pop_DS,
-
-/*  0x20 */ x86emuOp_and_byte_RM_R,
-/*  0x21 */ x86emuOp_and_word_RM_R,
-/*  0x22 */ x86emuOp_and_byte_R_RM,
-/*  0x23 */ x86emuOp_and_word_R_RM,
-/*  0x24 */ x86emuOp_and_byte_AL_IMM,
-/*  0x25 */ x86emuOp_and_word_AX_IMM,
-/*  0x26 */ x86emuOp_segovr_ES,
-/*  0x27 */ x86emuOp_daa,
-
-/*  0x28 */ x86emuOp_sub_byte_RM_R,
-/*  0x29 */ x86emuOp_sub_word_RM_R,
-/*  0x2a */ x86emuOp_sub_byte_R_RM,
-/*  0x2b */ x86emuOp_sub_word_R_RM,
-/*  0x2c */ x86emuOp_sub_byte_AL_IMM,
-/*  0x2d */ x86emuOp_sub_word_AX_IMM,
-/*  0x2e */ x86emuOp_segovr_CS,
-/*  0x2f */ x86emuOp_das,
-
-/*  0x30 */ x86emuOp_xor_byte_RM_R,
-/*  0x31 */ x86emuOp_xor_word_RM_R,
-/*  0x32 */ x86emuOp_xor_byte_R_RM,
-/*  0x33 */ x86emuOp_xor_word_R_RM,
-/*  0x34 */ x86emuOp_xor_byte_AL_IMM,
-/*  0x35 */ x86emuOp_xor_word_AX_IMM,
-/*  0x36 */ x86emuOp_segovr_SS,
-/*  0x37 */ x86emuOp_aaa,
-
-/*  0x38 */ x86emuOp_cmp_byte_RM_R,
-/*  0x39 */ x86emuOp_cmp_word_RM_R,
-/*  0x3a */ x86emuOp_cmp_byte_R_RM,
-/*  0x3b */ x86emuOp_cmp_word_R_RM,
-/*  0x3c */ x86emuOp_cmp_byte_AL_IMM,
-/*  0x3d */ x86emuOp_cmp_word_AX_IMM,
-/*  0x3e */ x86emuOp_segovr_DS,
-/*  0x3f */ x86emuOp_aas,
-
-/*  0x40 */ x86emuOp_inc_AX,
-/*  0x41 */ x86emuOp_inc_CX,
-/*  0x42 */ x86emuOp_inc_DX,
-/*  0x43 */ x86emuOp_inc_BX,
-/*  0x44 */ x86emuOp_inc_SP,
-/*  0x45 */ x86emuOp_inc_BP,
-/*  0x46 */ x86emuOp_inc_SI,
-/*  0x47 */ x86emuOp_inc_DI,
-
-/*  0x48 */ x86emuOp_dec_AX,
-/*  0x49 */ x86emuOp_dec_CX,
-/*  0x4a */ x86emuOp_dec_DX,
-/*  0x4b */ x86emuOp_dec_BX,
-/*  0x4c */ x86emuOp_dec_SP,
-/*  0x4d */ x86emuOp_dec_BP,
-/*  0x4e */ x86emuOp_dec_SI,
-/*  0x4f */ x86emuOp_dec_DI,
-
-/*  0x50 */ x86emuOp_push_AX,
-/*  0x51 */ x86emuOp_push_CX,
-/*  0x52 */ x86emuOp_push_DX,
-/*  0x53 */ x86emuOp_push_BX,
-/*  0x54 */ x86emuOp_push_SP,
-/*  0x55 */ x86emuOp_push_BP,
-/*  0x56 */ x86emuOp_push_SI,
-/*  0x57 */ x86emuOp_push_DI,
-
-/*  0x58 */ x86emuOp_pop_AX,
-/*  0x59 */ x86emuOp_pop_CX,
-/*  0x5a */ x86emuOp_pop_DX,
-/*  0x5b */ x86emuOp_pop_BX,
-/*  0x5c */ x86emuOp_pop_SP,
-/*  0x5d */ x86emuOp_pop_BP,
-/*  0x5e */ x86emuOp_pop_SI,
-/*  0x5f */ x86emuOp_pop_DI,
-
-/*  0x60 */ x86emuOp_push_all,
-/*  0x61 */ x86emuOp_pop_all,
-/*  0x62 */ x86emuOp_illegal_op,   /* bound */
-/*  0x63 */ x86emuOp_illegal_op,   /* arpl */
-/*  0x64 */ x86emuOp_segovr_FS,
-/*  0x65 */ x86emuOp_segovr_GS,
-/*  0x66 */ x86emuOp_prefix_data,
-/*  0x67 */ x86emuOp_prefix_addr,
-
-/*  0x68 */ x86emuOp_push_word_IMM,
-/*  0x69 */ x86emuOp_imul_word_IMM,
-/*  0x6a */ x86emuOp_push_byte_IMM,
-/*  0x6b */ x86emuOp_imul_byte_IMM,
-/*  0x6c */ x86emuOp_ins_byte,
-/*  0x6d */ x86emuOp_ins_word,
-/*  0x6e */ x86emuOp_outs_byte,
-/*  0x6f */ x86emuOp_outs_word,
-
-/*  0x70 */ x86emuOp_jump_near_O,
-/*  0x71 */ x86emuOp_jump_near_NO,
-/*  0x72 */ x86emuOp_jump_near_B,
-/*  0x73 */ x86emuOp_jump_near_NB,
-/*  0x74 */ x86emuOp_jump_near_Z,
-/*  0x75 */ x86emuOp_jump_near_NZ,
-/*  0x76 */ x86emuOp_jump_near_BE,
-/*  0x77 */ x86emuOp_jump_near_NBE,
-
-/*  0x78 */ x86emuOp_jump_near_S,
-/*  0x79 */ x86emuOp_jump_near_NS,
-/*  0x7a */ x86emuOp_jump_near_P,
-/*  0x7b */ x86emuOp_jump_near_NP,
-/*  0x7c */ x86emuOp_jump_near_L,
-/*  0x7d */ x86emuOp_jump_near_NL,
-/*  0x7e */ x86emuOp_jump_near_LE,
-/*  0x7f */ x86emuOp_jump_near_NLE,
-
-/*  0x80 */ x86emuOp_opc80_byte_RM_IMM,
-/*  0x81 */ x86emuOp_opc81_word_RM_IMM,
-/*  0x82 */ x86emuOp_opc82_byte_RM_IMM,
-/*  0x83 */ x86emuOp_opc83_word_RM_IMM,
-/*  0x84 */ x86emuOp_test_byte_RM_R,
-/*  0x85 */ x86emuOp_test_word_RM_R,
-/*  0x86 */ x86emuOp_xchg_byte_RM_R,
-/*  0x87 */ x86emuOp_xchg_word_RM_R,
-
-/*  0x88 */ x86emuOp_mov_byte_RM_R,
-/*  0x89 */ x86emuOp_mov_word_RM_R,
-/*  0x8a */ x86emuOp_mov_byte_R_RM,
-/*  0x8b */ x86emuOp_mov_word_R_RM,
-/*  0x8c */ x86emuOp_mov_word_RM_SR,
-/*  0x8d */ x86emuOp_lea_word_R_M,
-/*  0x8e */ x86emuOp_mov_word_SR_RM,
-/*  0x8f */ x86emuOp_pop_RM,
-
-/*  0x90 */ x86emuOp_nop,
-/*  0x91 */ x86emuOp_xchg_word_AX_CX,
-/*  0x92 */ x86emuOp_xchg_word_AX_DX,
-/*  0x93 */ x86emuOp_xchg_word_AX_BX,
-/*  0x94 */ x86emuOp_xchg_word_AX_SP,
-/*  0x95 */ x86emuOp_xchg_word_AX_BP,
-/*  0x96 */ x86emuOp_xchg_word_AX_SI,
-/*  0x97 */ x86emuOp_xchg_word_AX_DI,
-
-/*  0x98 */ x86emuOp_cbw,
-/*  0x99 */ x86emuOp_cwd,
-/*  0x9a */ x86emuOp_call_far_IMM,
-/*  0x9b */ x86emuOp_wait,
-/*  0x9c */ x86emuOp_pushf_word,
-/*  0x9d */ x86emuOp_popf_word,
-/*  0x9e */ x86emuOp_sahf,
-/*  0x9f */ x86emuOp_lahf,
-
-/*  0xa0 */ x86emuOp_mov_AL_M_IMM,
-/*  0xa1 */ x86emuOp_mov_AX_M_IMM,
-/*  0xa2 */ x86emuOp_mov_M_AL_IMM,
-/*  0xa3 */ x86emuOp_mov_M_AX_IMM,
-/*  0xa4 */ x86emuOp_movs_byte,
-/*  0xa5 */ x86emuOp_movs_word,
-/*  0xa6 */ x86emuOp_cmps_byte,
-/*  0xa7 */ x86emuOp_cmps_word,
-/*  0xa8 */ x86emuOp_test_AL_IMM,
-/*  0xa9 */ x86emuOp_test_AX_IMM,
-/*  0xaa */ x86emuOp_stos_byte,
-/*  0xab */ x86emuOp_stos_word,
-/*  0xac */ x86emuOp_lods_byte,
-/*  0xad */ x86emuOp_lods_word,
-/*  0xac */ x86emuOp_scas_byte,
-/*  0xad */ x86emuOp_scas_word,
-
-
-/*  0xb0 */ x86emuOp_mov_byte_AL_IMM,
-/*  0xb1 */ x86emuOp_mov_byte_CL_IMM,
-/*  0xb2 */ x86emuOp_mov_byte_DL_IMM,
-/*  0xb3 */ x86emuOp_mov_byte_BL_IMM,
-/*  0xb4 */ x86emuOp_mov_byte_AH_IMM,
-/*  0xb5 */ x86emuOp_mov_byte_CH_IMM,
-/*  0xb6 */ x86emuOp_mov_byte_DH_IMM,
-/*  0xb7 */ x86emuOp_mov_byte_BH_IMM,
-
-/*  0xb8 */ x86emuOp_mov_word_AX_IMM,
-/*  0xb9 */ x86emuOp_mov_word_CX_IMM,
-/*  0xba */ x86emuOp_mov_word_DX_IMM,
-/*  0xbb */ x86emuOp_mov_word_BX_IMM,
-/*  0xbc */ x86emuOp_mov_word_SP_IMM,
-/*  0xbd */ x86emuOp_mov_word_BP_IMM,
-/*  0xbe */ x86emuOp_mov_word_SI_IMM,
-/*  0xbf */ x86emuOp_mov_word_DI_IMM,
-
-/*  0xc0 */ x86emuOp_opcC0_byte_RM_MEM,
-/*  0xc1 */ x86emuOp_opcC1_word_RM_MEM,
-/*  0xc2 */ x86emuOp_ret_near_IMM,
-/*  0xc3 */ x86emuOp_ret_near,
-/*  0xc4 */ x86emuOp_les_R_IMM,
-/*  0xc5 */ x86emuOp_lds_R_IMM,
-/*  0xc6 */ x86emuOp_mov_byte_RM_IMM,
-/*  0xc7 */ x86emuOp_mov_word_RM_IMM,
-/*  0xc8 */ x86emuOp_enter,
-/*  0xc9 */ x86emuOp_leave,
-/*  0xca */ x86emuOp_ret_far_IMM,
-/*  0xcb */ x86emuOp_ret_far,
-/*  0xcc */ x86emuOp_int3,
-/*  0xcd */ x86emuOp_int_IMM,
-/*  0xce */ x86emuOp_into,
-/*  0xcf */ x86emuOp_iret,
-
-/*  0xd0 */ x86emuOp_opcD0_byte_RM_1,
-/*  0xd1 */ x86emuOp_opcD1_word_RM_1,
-/*  0xd2 */ x86emuOp_opcD2_byte_RM_CL,
-/*  0xd3 */ x86emuOp_opcD3_word_RM_CL,
-/*  0xd4 */ x86emuOp_aam,
-/*  0xd5 */ x86emuOp_aad,
-/*  0xd6 */ x86emuOp_illegal_op,   /* Undocumented SETALC instruction */
-/*  0xd7 */ x86emuOp_xlat,
-/*  0xd8 */ x86emuOp_esc_coprocess_d8,
-/*  0xd9 */ x86emuOp_esc_coprocess_d9,
-/*  0xda */ x86emuOp_esc_coprocess_da,
-/*  0xdb */ x86emuOp_esc_coprocess_db,
-/*  0xdc */ x86emuOp_esc_coprocess_dc,
-/*  0xdd */ x86emuOp_esc_coprocess_dd,
-/*  0xde */ x86emuOp_esc_coprocess_de,
-/*  0xdf */ x86emuOp_esc_coprocess_df,
-
-/*  0xe0 */ x86emuOp_loopne,
-/*  0xe1 */ x86emuOp_loope,
-/*  0xe2 */ x86emuOp_loop,
-/*  0xe3 */ x86emuOp_jcxz,
-/*  0xe4 */ x86emuOp_in_byte_AL_IMM,
-/*  0xe5 */ x86emuOp_in_word_AX_IMM,
-/*  0xe6 */ x86emuOp_out_byte_IMM_AL,
-/*  0xe7 */ x86emuOp_out_word_IMM_AX,
-
-/*  0xe8 */ x86emuOp_call_near_IMM,
-/*  0xe9 */ x86emuOp_jump_near_IMM,
-/*  0xea */ x86emuOp_jump_far_IMM,
-/*  0xeb */ x86emuOp_jump_byte_IMM,
-/*  0xec */ x86emuOp_in_byte_AL_DX,
-/*  0xed */ x86emuOp_in_word_AX_DX,
-/*  0xee */ x86emuOp_out_byte_DX_AL,
-/*  0xef */ x86emuOp_out_word_DX_AX,
-
-/*  0xf0 */ x86emuOp_lock,
-/*  0xf1 */ x86emuOp_illegal_op,
-/*  0xf2 */ x86emuOp_repne,
-/*  0xf3 */ x86emuOp_repe,
-/*  0xf4 */ x86emuOp_halt,
-/*  0xf5 */ x86emuOp_cmc,
-/*  0xf6 */ x86emuOp_opcF6_byte_RM,
-/*  0xf7 */ x86emuOp_opcF7_word_RM,
-
-/*  0xf8 */ x86emuOp_clc,
-/*  0xf9 */ x86emuOp_stc,
-/*  0xfa */ x86emuOp_cli,
-/*  0xfb */ x86emuOp_sti,
-/*  0xfc */ x86emuOp_cld,
-/*  0xfd */ x86emuOp_std,
-/*  0xfe */ x86emuOp_opcFE_byte_RM,
-/*  0xff */ x86emuOp_opcFF_word_RM,
-};
+/****************************************************************************

+*

+*						Realmode X86 Emulator Library

+*

+*            	Copyright (C) 1996-1999 SciTech Software, Inc.

+* 				     Copyright (C) David Mosberger-Tang

+* 					   Copyright (C) 1999 Egbert Eich

+*

+*  ========================================================================

+*

+*  Permission to use, copy, modify, distribute, and sell this software and

+*  its documentation for any purpose is hereby granted without fee,

+*  provided that the above copyright notice appear in all copies and that

+*  both that copyright notice and this permission notice appear in

+*  supporting documentation, and that the name of the authors not be used

+*  in advertising or publicity pertaining to distribution of the software

+*  without specific, written prior permission.  The authors makes no

+*  representations about the suitability of this software for any purpose.

+*  It is provided "as is" without express or implied warranty.

+*

+*  THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

+*  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

+*  EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR

+*  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF

+*  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR

+*  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

+*  PERFORMANCE OF THIS SOFTWARE.

+*

+*  ========================================================================

+*

+* Language:		ANSI C

+* Environment:	Any

+* Developer:    Kendall Bennett

+*

+* Description:  This file includes subroutines to implement the decoding

+*               and emulation of all the x86 processor instructions.

+*

+* There are approximately 250 subroutines in here, which correspond

+* to the 256 byte-"opcodes" found on the 8086.  The table which

+* dispatches this is found in the files optab.[ch].

+*

+* Each opcode proc has a comment preceeding it which gives it's table

+* address.  Several opcodes are missing (undefined) in the table.

+*

+* Each proc includes information for decoding (DECODE_PRINTF and

+* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc

+* functions (START_OF_INSTR, END_OF_INSTR).

+*

+* Many of the procedures are *VERY* similar in coding.  This has

+* allowed for a very large amount of code to be generated in a fairly

+* short amount of time (i.e. cut, paste, and modify).  The result is

+* that much of the code below could have been folded into subroutines

+* for a large reduction in size of this file.  The downside would be

+* that there would be a penalty in execution speed.  The file could

+* also have been *MUCH* larger by inlining certain functions which

+* were called.  This could have resulted even faster execution.  The

+* prime directive I used to decide whether to inline the code or to

+* modularize it, was basically: 1) no unnecessary subroutine calls,

+* 2) no routines more than about 200 lines in size, and 3) modularize

+* any code that I might not get right the first time.  The fetch_*

+* subroutines fall into the latter category.  The The decode_* fall

+* into the second category.  The coding of the "switch(mod){ .... }"

+* in many of the subroutines below falls into the first category.

+* Especially, the coding of {add,and,or,sub,...}_{byte,word}

+* subroutines are an especially glaring case of the third guideline.

+* Since so much of the code is cloned from other modules (compare

+* opcode #00 to opcode #01), making the basic operations subroutine

+* calls is especially important; otherwise mistakes in coding an

+* "add" would represent a nightmare in maintenance.

+*

+****************************************************************************/

+

+#include "x86emu/x86emui.h"

+

+/*----------------------------- Implementation ----------------------------*/

+

+/****************************************************************************

+PARAMETERS:

+op1 - Instruction op code

+

+REMARKS:

+Handles illegal opcodes.

+****************************************************************************/

+static void x86emuOp_illegal_op(

+    u8 op1)

+{

+    START_OF_INSTR();

+    if (M.x86.R_SP != 0) {

+    DECODE_PRINTF("ILLEGAL X86 OPCODE\n");

+    TRACE_REGS();

+    DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n",

+        M.x86.R_CS, M.x86.R_IP-1,op1));

+    HALT_SYS();

+        }

+    else {

+        /* If we get here, it means the stack pointer is back to zero

+         * so we are just returning from an emulator service call

+         * so therte is no need to display an error message. We trap

+         * the emulator with an 0xF1 opcode to finish the service

+         * call.

+         */

+        X86EMU_halt_sys();

+        }

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x00

+****************************************************************************/

+static void x86emuOp_add_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+    u8 *destreg, *srcreg;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADD\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = add_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = add_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = add_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = add_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x01

+****************************************************************************/

+static void x86emuOp_add_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADD\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = add_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = add_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = add_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = add_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = add_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = add_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x02

+****************************************************************************/

+static void x86emuOp_add_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADD\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = add_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = add_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = add_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = add_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x03

+****************************************************************************/

+static void x86emuOp_add_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADD\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = add_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x04

+****************************************************************************/

+static void x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADD\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = add_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x05

+****************************************************************************/

+static void x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("ADD\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("ADD\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = add_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = add_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x06

+****************************************************************************/

+static void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("PUSH\tES\n");

+    TRACE_AND_STEP();

+    push_word(M.x86.R_ES);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x07

+****************************************************************************/

+static void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("POP\tES\n");

+    TRACE_AND_STEP();

+    M.x86.R_ES = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x08

+****************************************************************************/

+static void x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = or_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = or_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = or_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = or_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x09

+****************************************************************************/

+static void x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = or_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = or_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = or_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = or_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = or_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = or_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x0a

+****************************************************************************/

+static void x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = or_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = or_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = or_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = or_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x0b

+****************************************************************************/

+static void x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = or_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x0c

+****************************************************************************/

+static void x86emuOp_or_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OR\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = or_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x0d

+****************************************************************************/

+static void x86emuOp_or_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("OR\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("OR\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = or_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = or_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x0e

+****************************************************************************/

+static void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("PUSH\tCS\n");

+    TRACE_AND_STEP();

+    push_word(M.x86.R_CS);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x0f. Escape for two-byte opcode (286 or better)

+****************************************************************************/

+static void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1))

+{

+    u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));

+    INC_DECODED_INST_LEN(1);

+    (*x86emu_optab2[op2])(op2);

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x10

+****************************************************************************/

+static void x86emuOp_adc_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADC\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = adc_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = adc_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = adc_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = adc_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x11

+****************************************************************************/

+static void x86emuOp_adc_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADC\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = adc_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = adc_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = adc_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = adc_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = adc_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = adc_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x12

+****************************************************************************/

+static void x86emuOp_adc_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADC\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = adc_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = adc_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = adc_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = adc_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x13

+****************************************************************************/

+static void x86emuOp_adc_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADC\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = adc_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x14

+****************************************************************************/

+static void x86emuOp_adc_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("ADC\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = adc_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x15

+****************************************************************************/

+static void x86emuOp_adc_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("ADC\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("ADC\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = adc_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = adc_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x16

+****************************************************************************/

+static void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("PUSH\tSS\n");

+    TRACE_AND_STEP();

+    push_word(M.x86.R_SS);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x17

+****************************************************************************/

+static void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("POP\tSS\n");

+    TRACE_AND_STEP();

+    M.x86.R_SS = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x18

+****************************************************************************/

+static void x86emuOp_sbb_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SBB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = sbb_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = sbb_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = sbb_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sbb_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x19

+****************************************************************************/

+static void x86emuOp_sbb_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SBB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sbb_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sbb_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sbb_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sbb_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sbb_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sbb_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x1a

+****************************************************************************/

+static void x86emuOp_sbb_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SBB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sbb_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sbb_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sbb_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sbb_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x1b

+****************************************************************************/

+static void x86emuOp_sbb_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SBB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sbb_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x1c

+****************************************************************************/

+static void x86emuOp_sbb_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SBB\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = sbb_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x1d

+****************************************************************************/

+static void x86emuOp_sbb_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("SBB\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("SBB\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = sbb_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = sbb_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x1e

+****************************************************************************/

+static void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("PUSH\tDS\n");

+    TRACE_AND_STEP();

+    push_word(M.x86.R_DS);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x1f

+****************************************************************************/

+static void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("POP\tDS\n");

+    TRACE_AND_STEP();

+    M.x86.R_DS = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x20

+****************************************************************************/

+static void x86emuOp_and_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AND\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = and_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = and_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = and_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = and_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x21

+****************************************************************************/

+static void x86emuOp_and_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AND\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = and_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = and_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = and_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = and_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = and_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = and_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x22

+****************************************************************************/

+static void x86emuOp_and_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AND\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = and_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = and_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = and_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = and_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x23

+****************************************************************************/

+static void x86emuOp_and_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AND\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_long(*destreg, srcval);

+            break;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_word(*destreg, srcval);

+            break;

+        }

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = and_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x24

+****************************************************************************/

+static void x86emuOp_and_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AND\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = and_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x25

+****************************************************************************/

+static void x86emuOp_and_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("AND\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("AND\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = and_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = and_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x26

+****************************************************************************/

+static void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("ES:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_SEGOVR_ES;

+    /*

+     * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4

+     * opcode subroutines we do not want to do this.

+     */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x27

+****************************************************************************/

+static void x86emuOp_daa(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("DAA\n");

+    TRACE_AND_STEP();

+    M.x86.R_AL = daa_byte(M.x86.R_AL);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x28

+****************************************************************************/

+static void x86emuOp_sub_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SUB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = sub_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = sub_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = sub_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sub_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x29

+****************************************************************************/

+static void x86emuOp_sub_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SUB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sub_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sub_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sub_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sub_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sub_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = sub_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x2a

+****************************************************************************/

+static void x86emuOp_sub_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SUB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sub_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sub_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sub_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = sub_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x2b

+****************************************************************************/

+static void x86emuOp_sub_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SUB\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = sub_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x2c

+****************************************************************************/

+static void x86emuOp_sub_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SUB\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = sub_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x2d

+****************************************************************************/

+static void x86emuOp_sub_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("SUB\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("SUB\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = sub_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = sub_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x2e

+****************************************************************************/

+static void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("CS:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_SEGOVR_CS;

+    /* note no DECODE_CLEAR_SEGOVR here. */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x2f

+****************************************************************************/

+static void x86emuOp_das(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("DAS\n");

+    TRACE_AND_STEP();

+    M.x86.R_AL = das_byte(M.x86.R_AL);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x30

+****************************************************************************/

+static void x86emuOp_xor_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XOR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = xor_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = xor_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = xor_byte(destval, *srcreg);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = xor_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x31

+****************************************************************************/

+static void x86emuOp_xor_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XOR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = xor_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = xor_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = xor_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = xor_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = xor_long(destval, *srcreg);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = xor_word(destval, *srcreg);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x32

+****************************************************************************/

+static void x86emuOp_xor_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XOR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = xor_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = xor_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = xor_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = xor_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x33

+****************************************************************************/

+static void x86emuOp_xor_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XOR\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = xor_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x34

+****************************************************************************/

+static void x86emuOp_xor_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XOR\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    M.x86.R_AL = xor_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x35

+****************************************************************************/

+static void x86emuOp_xor_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XOR\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("XOR\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = xor_long(M.x86.R_EAX, srcval);

+    } else {

+        M.x86.R_AX = xor_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x36

+****************************************************************************/

+static void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("SS:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_SEGOVR_SS;

+    /* no DECODE_CLEAR_SEGOVR ! */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x37

+****************************************************************************/

+static void x86emuOp_aaa(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("AAA\n");

+    TRACE_AND_STEP();

+    M.x86.R_AX = aaa_word(M.x86.R_AX);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x38

+****************************************************************************/

+static void x86emuOp_cmp_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+    u8 *destreg, *srcreg;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("CMP\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(destval, *srcreg);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(destval, *srcreg);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(destval, *srcreg);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x39

+****************************************************************************/

+static void x86emuOp_cmp_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("CMP\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(destval, *srcreg);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(destval, *srcreg);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(destval, *srcreg);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(destval, *srcreg);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(destval, *srcreg);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(destval, *srcreg);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x3a

+****************************************************************************/

+static void x86emuOp_cmp_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("CMP\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(*destreg, srcval);

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(*destreg, srcval);

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(*destreg, srcval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        cmp_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x3b

+****************************************************************************/

+static void x86emuOp_cmp_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("CMP\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(*destreg, srcval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(*destreg, srcval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(*destreg, srcval);

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(*destreg, srcval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            cmp_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x3c

+****************************************************************************/

+static void x86emuOp_cmp_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("CMP\tAL,");

+    srcval = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    cmp_byte(M.x86.R_AL, srcval);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x3d

+****************************************************************************/

+static void x86emuOp_cmp_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("CMP\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("CMP\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        cmp_long(M.x86.R_EAX, srcval);

+    } else {

+        cmp_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x3e

+****************************************************************************/

+static void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("DS:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_SEGOVR_DS;

+    /* NO DECODE_CLEAR_SEGOVR! */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x3f

+****************************************************************************/

+static void x86emuOp_aas(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("AAS\n");

+    TRACE_AND_STEP();

+    M.x86.R_AX = aas_word(M.x86.R_AX);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x40

+****************************************************************************/

+static void x86emuOp_inc_AX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tEAX\n");

+    } else {

+        DECODE_PRINTF("INC\tAX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = inc_long(M.x86.R_EAX);

+    } else {

+        M.x86.R_AX = inc_word(M.x86.R_AX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x41

+****************************************************************************/

+static void x86emuOp_inc_CX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tECX\n");

+    } else {

+        DECODE_PRINTF("INC\tCX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ECX = inc_long(M.x86.R_ECX);

+    } else {

+        M.x86.R_CX = inc_word(M.x86.R_CX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x42

+****************************************************************************/

+static void x86emuOp_inc_DX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tEDX\n");

+    } else {

+        DECODE_PRINTF("INC\tDX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDX = inc_long(M.x86.R_EDX);

+    } else {

+        M.x86.R_DX = inc_word(M.x86.R_DX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x43

+****************************************************************************/

+static void x86emuOp_inc_BX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tEBX\n");

+    } else {

+        DECODE_PRINTF("INC\tBX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBX = inc_long(M.x86.R_EBX);

+    } else {

+        M.x86.R_BX = inc_word(M.x86.R_BX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x44

+****************************************************************************/

+static void x86emuOp_inc_SP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tESP\n");

+    } else {

+        DECODE_PRINTF("INC\tSP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESP = inc_long(M.x86.R_ESP);

+    } else {

+        M.x86.R_SP = inc_word(M.x86.R_SP);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x45

+****************************************************************************/

+static void x86emuOp_inc_BP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tEBP\n");

+    } else {

+        DECODE_PRINTF("INC\tBP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBP = inc_long(M.x86.R_EBP);

+    } else {

+        M.x86.R_BP = inc_word(M.x86.R_BP);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x46

+****************************************************************************/

+static void x86emuOp_inc_SI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tESI\n");

+    } else {

+        DECODE_PRINTF("INC\tSI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESI = inc_long(M.x86.R_ESI);

+    } else {

+        M.x86.R_SI = inc_word(M.x86.R_SI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x47

+****************************************************************************/

+static void x86emuOp_inc_DI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INC\tEDI\n");

+    } else {

+        DECODE_PRINTF("INC\tDI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDI = inc_long(M.x86.R_EDI);

+    } else {

+        M.x86.R_DI = inc_word(M.x86.R_DI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x48

+****************************************************************************/

+static void x86emuOp_dec_AX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tEAX\n");

+    } else {

+        DECODE_PRINTF("DEC\tAX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = dec_long(M.x86.R_EAX);

+    } else {

+        M.x86.R_AX = dec_word(M.x86.R_AX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x49

+****************************************************************************/

+static void x86emuOp_dec_CX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tECX\n");

+    } else {

+        DECODE_PRINTF("DEC\tCX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ECX = dec_long(M.x86.R_ECX);

+    } else {

+        M.x86.R_CX = dec_word(M.x86.R_CX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x4a

+****************************************************************************/

+static void x86emuOp_dec_DX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tEDX\n");

+    } else {

+        DECODE_PRINTF("DEC\tDX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDX = dec_long(M.x86.R_EDX);

+    } else {

+        M.x86.R_DX = dec_word(M.x86.R_DX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x4b

+****************************************************************************/

+static void x86emuOp_dec_BX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tEBX\n");

+    } else {

+        DECODE_PRINTF("DEC\tBX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBX = dec_long(M.x86.R_EBX);

+    } else {

+        M.x86.R_BX = dec_word(M.x86.R_BX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x4c

+****************************************************************************/

+static void x86emuOp_dec_SP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tESP\n");

+    } else {

+        DECODE_PRINTF("DEC\tSP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESP = dec_long(M.x86.R_ESP);

+    } else {

+        M.x86.R_SP = dec_word(M.x86.R_SP);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x4d

+****************************************************************************/

+static void x86emuOp_dec_BP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tEBP\n");

+    } else {

+        DECODE_PRINTF("DEC\tBP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBP = dec_long(M.x86.R_EBP);

+    } else {

+        M.x86.R_BP = dec_word(M.x86.R_BP);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x4e

+****************************************************************************/

+static void x86emuOp_dec_SI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tESI\n");

+    } else {

+        DECODE_PRINTF("DEC\tSI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESI = dec_long(M.x86.R_ESI);

+    } else {

+        M.x86.R_SI = dec_word(M.x86.R_SI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x4f

+****************************************************************************/

+static void x86emuOp_dec_DI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("DEC\tEDI\n");

+    } else {

+        DECODE_PRINTF("DEC\tDI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDI = dec_long(M.x86.R_EDI);

+    } else {

+        M.x86.R_DI = dec_word(M.x86.R_DI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x50

+****************************************************************************/

+static void x86emuOp_push_AX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tEAX\n");

+    } else {

+        DECODE_PRINTF("PUSH\tAX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_EAX);

+    } else {

+        push_word(M.x86.R_AX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x51

+****************************************************************************/

+static void x86emuOp_push_CX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tECX\n");

+    } else {

+        DECODE_PRINTF("PUSH\tCX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_ECX);

+    } else {

+        push_word(M.x86.R_CX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x52

+****************************************************************************/

+static void x86emuOp_push_DX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tEDX\n");

+    } else {

+        DECODE_PRINTF("PUSH\tDX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_EDX);

+    } else {

+        push_word(M.x86.R_DX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x53

+****************************************************************************/

+static void x86emuOp_push_BX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tEBX\n");

+    } else {

+        DECODE_PRINTF("PUSH\tBX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_EBX);

+    } else {

+        push_word(M.x86.R_BX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x54

+****************************************************************************/

+static void x86emuOp_push_SP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tESP\n");

+    } else {

+        DECODE_PRINTF("PUSH\tSP\n");

+    }

+    TRACE_AND_STEP();

+	/* Always push (E)SP, since we are emulating an i386 and above

+	 * processor. This is necessary as some BIOS'es use this to check

+	 * what type of processor is in the system.

+	 */

+	if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+		push_long(M.x86.R_ESP);

+	} else {

+		push_word((u16)(M.x86.R_SP));

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x55

+****************************************************************************/

+static void x86emuOp_push_BP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tEBP\n");

+    } else {

+        DECODE_PRINTF("PUSH\tBP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_EBP);

+    } else {

+        push_word(M.x86.R_BP);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x56

+****************************************************************************/

+static void x86emuOp_push_SI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tESI\n");

+    } else {

+        DECODE_PRINTF("PUSH\tSI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_ESI);

+    } else {

+        push_word(M.x86.R_SI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x57

+****************************************************************************/

+static void x86emuOp_push_DI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSH\tEDI\n");

+    } else {

+        DECODE_PRINTF("PUSH\tDI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(M.x86.R_EDI);

+    } else {

+        push_word(M.x86.R_DI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x58

+****************************************************************************/

+static void x86emuOp_pop_AX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tEAX\n");

+    } else {

+        DECODE_PRINTF("POP\tAX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = pop_long();

+    } else {

+        M.x86.R_AX = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x59

+****************************************************************************/

+static void x86emuOp_pop_CX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tECX\n");

+    } else {

+        DECODE_PRINTF("POP\tCX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ECX = pop_long();

+    } else {

+        M.x86.R_CX = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x5a

+****************************************************************************/

+static void x86emuOp_pop_DX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tEDX\n");

+    } else {

+        DECODE_PRINTF("POP\tDX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDX = pop_long();

+    } else {

+        M.x86.R_DX = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x5b

+****************************************************************************/

+static void x86emuOp_pop_BX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tEBX\n");

+    } else {

+        DECODE_PRINTF("POP\tBX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBX = pop_long();

+    } else {

+        M.x86.R_BX = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x5c

+****************************************************************************/

+static void x86emuOp_pop_SP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tESP\n");

+    } else {

+        DECODE_PRINTF("POP\tSP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESP = pop_long();

+    } else {

+        M.x86.R_SP = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x5d

+****************************************************************************/

+static void x86emuOp_pop_BP(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tEBP\n");

+    } else {

+        DECODE_PRINTF("POP\tBP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBP = pop_long();

+    } else {

+        M.x86.R_BP = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x5e

+****************************************************************************/

+static void x86emuOp_pop_SI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tESI\n");

+    } else {

+        DECODE_PRINTF("POP\tSI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESI = pop_long();

+    } else {

+        M.x86.R_SI = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x5f

+****************************************************************************/

+static void x86emuOp_pop_DI(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POP\tEDI\n");

+    } else {

+        DECODE_PRINTF("POP\tDI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDI = pop_long();

+    } else {

+        M.x86.R_DI = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x60

+****************************************************************************/

+static void x86emuOp_push_all(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSHAD\n");

+    } else {

+        DECODE_PRINTF("PUSHA\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        u32 old_sp = M.x86.R_ESP;

+

+        push_long(M.x86.R_EAX);

+        push_long(M.x86.R_ECX);

+        push_long(M.x86.R_EDX);

+        push_long(M.x86.R_EBX);

+        push_long(old_sp);

+        push_long(M.x86.R_EBP);

+        push_long(M.x86.R_ESI);

+        push_long(M.x86.R_EDI);

+    } else {

+        u16 old_sp = M.x86.R_SP;

+

+        push_word(M.x86.R_AX);

+        push_word(M.x86.R_CX);

+        push_word(M.x86.R_DX);

+        push_word(M.x86.R_BX);

+        push_word(old_sp);

+        push_word(M.x86.R_BP);

+        push_word(M.x86.R_SI);

+        push_word(M.x86.R_DI);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x61

+****************************************************************************/

+static void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POPAD\n");

+    } else {

+        DECODE_PRINTF("POPA\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDI = pop_long();

+        M.x86.R_ESI = pop_long();

+        M.x86.R_EBP = pop_long();

+        M.x86.R_ESP += 4;              /* skip ESP */

+        M.x86.R_EBX = pop_long();

+        M.x86.R_EDX = pop_long();

+        M.x86.R_ECX = pop_long();

+        M.x86.R_EAX = pop_long();

+    } else {

+        M.x86.R_DI = pop_word();

+        M.x86.R_SI = pop_word();

+        M.x86.R_BP = pop_word();

+        M.x86.R_SP += 2;               /* skip SP */

+        M.x86.R_BX = pop_word();

+        M.x86.R_DX = pop_word();

+        M.x86.R_CX = pop_word();

+        M.x86.R_AX = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/*opcode 0x62   ILLEGAL OP, calls x86emuOp_illegal_op() */

+/*opcode 0x63   ILLEGAL OP, calls x86emuOp_illegal_op() */

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x64

+****************************************************************************/

+static void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("FS:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_SEGOVR_FS;

+    /*

+     * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4

+     * opcode subroutines we do not want to do this.

+     */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x65

+****************************************************************************/

+static void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("GS:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_SEGOVR_GS;

+    /*

+     * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4

+     * opcode subroutines we do not want to do this.

+     */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x66 - prefix for 32-bit register

+****************************************************************************/

+static void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("DATA:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_PREFIX_DATA;

+    /* note no DECODE_CLEAR_SEGOVR here. */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x67 - prefix for 32-bit address

+****************************************************************************/

+static void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("ADDR:\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_PREFIX_ADDR;

+    /* note no DECODE_CLEAR_SEGOVR here. */

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x68

+****************************************************************************/

+static void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 imm;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        imm = fetch_long_imm();

+    } else {

+        imm = fetch_word_imm();

+    }

+    DECODE_PRINTF2("PUSH\t%x\n", imm);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(imm);

+    } else {

+        push_word((u16)imm);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x69

+****************************************************************************/

+static void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("IMUL\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+            u32 res_lo,res_hi;

+            s32 imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+            u32 res;

+            s16 imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            res = (s16)srcval * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+            u32 res_lo,res_hi;

+            s32 imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+            u32 res;

+            s16 imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            res = (s16)srcval * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+            u32 res_lo,res_hi;

+            s32 imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+            u32 res;

+            s16 imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            res = (s16)srcval * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+            u32 res_lo,res_hi;

+            s32 imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg,*srcreg;

+            u32 res;

+            s16 imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            res = (s16)*srcreg * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x6a

+****************************************************************************/

+static void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1))

+{

+    s16 imm;

+

+    START_OF_INSTR();

+    imm = (s8)fetch_byte_imm();

+    DECODE_PRINTF2("PUSH\t%d\n", imm);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+	push_long((s32)imm);

+    } else {

+	push_word(imm);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x6b

+****************************************************************************/

+static void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+    s8  imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("IMUL\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+            u32 res_lo,res_hi;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+            u32 res;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            res = (s16)srcval * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+            u32 res_lo,res_hi;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+            u32 res;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            res = (s16)srcval * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+            u32 res_lo,res_hi;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+            u32 res;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            res = (s16)srcval * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+            u32 res_lo,res_hi;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            TRACE_AND_STEP();

+            imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);

+            if (res_hi != 0) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u32)res_lo;

+        } else {

+            u16 *destreg,*srcreg;

+            u32 res;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            imm = fetch_byte_imm();

+            DECODE_PRINTF2(",%d\n", (s32)imm);

+            res = (s16)*srcreg * (s16)imm;

+            if (res > 0xFFFF) {

+                SET_FLAG(F_CF);

+                SET_FLAG(F_OF);

+            } else {

+                CLEAR_FLAG(F_CF);

+                CLEAR_FLAG(F_OF);

+            }

+            *destreg = (u16)res;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x6c

+****************************************************************************/

+static void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("INSB\n");

+    ins(1);

+    TRACE_AND_STEP();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x6d

+****************************************************************************/

+static void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("INSD\n");

+        ins(4);

+    } else {

+        DECODE_PRINTF("INSW\n");

+        ins(2);

+    }

+    TRACE_AND_STEP();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x6e

+****************************************************************************/

+static void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("OUTSB\n");

+    outs(1);

+    TRACE_AND_STEP();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x6f

+****************************************************************************/

+static void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("OUTSD\n");

+        outs(4);

+    } else {

+        DECODE_PRINTF("OUTSW\n");

+        outs(2);

+    }

+    TRACE_AND_STEP();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x70

+****************************************************************************/

+static void x86emuOp_jump_near_O(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if overflow flag is set */

+    START_OF_INSTR();

+    DECODE_PRINTF("JO\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_OF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x71

+****************************************************************************/

+static void x86emuOp_jump_near_NO(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if overflow is not set */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNO\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (!ACCESS_FLAG(F_OF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x72

+****************************************************************************/

+static void x86emuOp_jump_near_B(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if carry flag is set. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JB\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_CF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x73

+****************************************************************************/

+static void x86emuOp_jump_near_NB(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if carry flag is clear. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNB\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (!ACCESS_FLAG(F_CF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x74

+****************************************************************************/

+static void x86emuOp_jump_near_Z(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if zero flag is set. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JZ\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_ZF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x75

+****************************************************************************/

+static void x86emuOp_jump_near_NZ(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if zero flag is clear. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNZ\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (!ACCESS_FLAG(F_ZF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x76

+****************************************************************************/

+static void x86emuOp_jump_near_BE(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if carry flag is set or if the zero

+       flag is set. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JBE\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x77

+****************************************************************************/

+static void x86emuOp_jump_near_NBE(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if carry flag is clear and if the zero

+       flag is clear */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNBE\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (!(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x78

+****************************************************************************/

+static void x86emuOp_jump_near_S(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if sign flag is set */

+    START_OF_INSTR();

+    DECODE_PRINTF("JS\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_SF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x79

+****************************************************************************/

+static void x86emuOp_jump_near_NS(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if sign flag is clear */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNS\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (!ACCESS_FLAG(F_SF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x7a

+****************************************************************************/

+static void x86emuOp_jump_near_P(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if parity flag is set (even parity) */

+    START_OF_INSTR();

+    DECODE_PRINTF("JP\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_PF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x7b

+****************************************************************************/

+static void x86emuOp_jump_near_NP(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+

+    /* jump to byte offset if parity flag is clear (odd parity) */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNP\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (!ACCESS_FLAG(F_PF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x7c

+****************************************************************************/

+static void x86emuOp_jump_near_L(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+    int sf, of;

+

+    /* jump to byte offset if sign flag not equal to overflow flag. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JL\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    sf = ACCESS_FLAG(F_SF) != 0;

+    of = ACCESS_FLAG(F_OF) != 0;

+    if (sf ^ of)

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x7d

+****************************************************************************/

+static void x86emuOp_jump_near_NL(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+    int sf, of;

+

+    /* jump to byte offset if sign flag not equal to overflow flag. */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNL\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    sf = ACCESS_FLAG(F_SF) != 0;

+    of = ACCESS_FLAG(F_OF) != 0;

+    /* note: inverse of above, but using == instead of xor. */

+    if (sf == of)

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x7e

+****************************************************************************/

+static void x86emuOp_jump_near_LE(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+    int sf, of;

+

+    /* jump to byte offset if sign flag not equal to overflow flag

+       or the zero flag is set */

+    START_OF_INSTR();

+    DECODE_PRINTF("JLE\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    sf = ACCESS_FLAG(F_SF) != 0;

+    of = ACCESS_FLAG(F_OF) != 0;

+    if ((sf ^ of) || ACCESS_FLAG(F_ZF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x7f

+****************************************************************************/

+static void x86emuOp_jump_near_NLE(u8 X86EMU_UNUSED(op1))

+{

+    s8 offset;

+    u16 target;

+    int sf, of;

+

+    /* jump to byte offset if sign flag equal to overflow flag.

+       and the zero flag is clear */

+    START_OF_INSTR();

+    DECODE_PRINTF("JNLE\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + (s16)offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    sf = ACCESS_FLAG(F_SF) != 0;

+    of = ACCESS_FLAG(F_OF) != 0;

+    if ((sf == of) && !ACCESS_FLAG(F_ZF))

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+static u8 (*opc80_byte_operation[])(u8 d, u8 s) =

+{

+    add_byte,           /* 00 */

+    or_byte,            /* 01 */

+    adc_byte,           /* 02 */

+    sbb_byte,           /* 03 */

+    and_byte,           /* 04 */

+    sub_byte,           /* 05 */

+    xor_byte,           /* 06 */

+    cmp_byte,           /* 07 */

+};

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x80

+****************************************************************************/

+static void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 imm;

+    u8 destval;

+

+    /*

+     * Weirdo special case instruction format.  Part of the opcode

+     * held below in "RH".  Doubly nested case would result, except

+     * that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ADD\t");

+            break;

+        case 1:

+            DECODE_PRINTF("OR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("ADC\t");

+            break;

+        case 3:

+            DECODE_PRINTF("SBB\t");

+            break;

+        case 4:

+            DECODE_PRINTF("AND\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SUB\t");

+            break;

+        case 6:

+            DECODE_PRINTF("XOR\t");

+            break;

+        case 7:

+            DECODE_PRINTF("CMP\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2("%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc80_byte_operation[rh]) (destval, imm);

+        if (rh != 7)

+            store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2("%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc80_byte_operation[rh]) (destval, imm);

+        if (rh != 7)

+            store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2("%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc80_byte_operation[rh]) (destval, imm);

+        if (rh != 7)

+            store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2("%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc80_byte_operation[rh]) (*destreg, imm);

+        if (rh != 7)

+            *destreg = destval;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+static u16 (*opc81_word_operation[])(u16 d, u16 s) =

+{

+    add_word,           /*00 */

+    or_word,            /*01 */

+    adc_word,           /*02 */

+    sbb_word,           /*03 */

+    and_word,           /*04 */

+    sub_word,           /*05 */

+    xor_word,           /*06 */

+    cmp_word,           /*07 */

+};

+

+static u32 (*opc81_long_operation[])(u32 d, u32 s) =

+{

+    add_long,           /*00 */

+    or_long,            /*01 */

+    adc_long,           /*02 */

+    sbb_long,           /*03 */

+    and_long,           /*04 */

+    sub_long,           /*05 */

+    xor_long,           /*06 */

+    cmp_long,           /*07 */

+};

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x81

+****************************************************************************/

+static void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    /*

+     * Weirdo special case instruction format.  Part of the opcode

+     * held below in "RH".  Doubly nested case would result, except

+     * that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ADD\t");

+            break;

+        case 1:

+            DECODE_PRINTF("OR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("ADC\t");

+            break;

+        case 3:

+            DECODE_PRINTF("SBB\t");

+            break;

+        case 4:

+            DECODE_PRINTF("AND\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SUB\t");

+            break;

+        case 6:

+            DECODE_PRINTF("XOR\t");

+            break;

+        case 7:

+            DECODE_PRINTF("CMP\t");

+            break;

+        }

+    }

+#endif

+    /*

+     * Know operation, decode the mod byte to find the addressing 

+     * mode.

+     */

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval,imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_long_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_long(destoffset, destval);

+        } else {

+            u16 destval,imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_word_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval,imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_long_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_long(destoffset, destval);

+        } else {

+            u16 destval,imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_word_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval,imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_long_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_long(destoffset, destval);

+        } else {

+            u16 destval,imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_word_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 destval,imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            imm = fetch_long_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_long_operation[rh]) (*destreg, imm);

+            if (rh != 7)

+                *destreg = destval;

+        } else {

+            u16 *destreg;

+            u16 destval,imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            imm = fetch_word_imm();

+            DECODE_PRINTF2("%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc81_word_operation[rh]) (*destreg, imm);

+            if (rh != 7)

+                *destreg = destval;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+static u8 (*opc82_byte_operation[])(u8 s, u8 d) =

+{

+    add_byte,           /*00 */

+    or_byte,            /*01 *//*YYY UNUSED ???? */

+    adc_byte,           /*02 */

+    sbb_byte,           /*03 */

+    and_byte,           /*04 *//*YYY UNUSED ???? */

+    sub_byte,           /*05 */

+    xor_byte,           /*06 *//*YYY UNUSED ???? */

+    cmp_byte,           /*07 */

+};

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x82

+****************************************************************************/

+static void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 imm;

+    u8 destval;

+

+    /*

+     * Weirdo special case instruction format.  Part of the opcode

+     * held below in "RH".  Doubly nested case would result, except

+     * that the decoded instruction Similar to opcode 81, except that

+     * the immediate byte is sign extended to a word length.

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ADD\t");

+            break;

+        case 1:

+            DECODE_PRINTF("OR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("ADC\t");

+            break;

+        case 3:

+            DECODE_PRINTF("SBB\t");

+            break;

+        case 4:

+            DECODE_PRINTF("AND\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SUB\t");

+            break;

+        case 6:

+            DECODE_PRINTF("XOR\t");

+            break;

+        case 7:

+            DECODE_PRINTF("CMP\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        destval = fetch_data_byte(destoffset);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc82_byte_operation[rh]) (destval, imm);

+        if (rh != 7)

+            store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        destval = fetch_data_byte(destoffset);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc82_byte_operation[rh]) (destval, imm);

+        if (rh != 7)

+            store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        destval = fetch_data_byte(destoffset);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc82_byte_operation[rh]) (destval, imm);

+        if (rh != 7)

+            store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", imm);

+        TRACE_AND_STEP();

+        destval = (*opc82_byte_operation[rh]) (*destreg, imm);

+        if (rh != 7)

+            *destreg = destval;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+static u16 (*opc83_word_operation[])(u16 s, u16 d) =

+{

+    add_word,           /*00 */

+    or_word,            /*01 *//*YYY UNUSED ???? */

+    adc_word,           /*02 */

+    sbb_word,           /*03 */

+    and_word,           /*04 *//*YYY UNUSED ???? */

+    sub_word,           /*05 */

+    xor_word,           /*06 *//*YYY UNUSED ???? */

+    cmp_word,           /*07 */

+};

+

+static u32 (*opc83_long_operation[])(u32 s, u32 d) =

+{

+    add_long,           /*00 */

+    or_long,            /*01 *//*YYY UNUSED ???? */

+    adc_long,           /*02 */

+    sbb_long,           /*03 */

+    and_long,           /*04 *//*YYY UNUSED ???? */

+    sub_long,           /*05 */

+    xor_long,           /*06 *//*YYY UNUSED ???? */

+    cmp_long,           /*07 */

+};

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x83

+****************************************************************************/

+static void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    /*

+     * Weirdo special case instruction format.  Part of the opcode

+     * held below in "RH".  Doubly nested case would result, except

+     * that the decoded instruction Similar to opcode 81, except that

+     * the immediate byte is sign extended to a word length.

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+       switch (rh) {

+        case 0:

+            DECODE_PRINTF("ADD\t");

+            break;

+        case 1:

+            DECODE_PRINTF("OR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("ADC\t");

+            break;

+        case 3:

+            DECODE_PRINTF("SBB\t");

+            break;

+        case 4:

+            DECODE_PRINTF("AND\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SUB\t");

+            break;

+        case 6:

+            DECODE_PRINTF("XOR\t");

+            break;

+        case 7:

+            DECODE_PRINTF("CMP\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval,imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            destval = fetch_data_long(destoffset);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_long_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_long(destoffset, destval);

+        } else {

+            u16 destval,imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            destval = fetch_data_word(destoffset);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_word_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval,imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            destval = fetch_data_long(destoffset);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_long_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_long(destoffset, destval);

+        } else {

+            u16 destval,imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            destval = fetch_data_word(destoffset);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_word_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval,imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            destval = fetch_data_long(destoffset);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_long_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_long(destoffset, destval);

+        } else {

+            u16 destval,imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            destval = fetch_data_word(destoffset);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_word_operation[rh]) (destval, imm);

+            if (rh != 7)

+                store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 destval,imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_long_operation[rh]) (*destreg, imm);

+            if (rh != 7)

+                *destreg = destval;

+        } else {

+            u16 *destreg;

+            u16 destval,imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            imm = (s8) fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            destval = (*opc83_word_operation[rh]) (*destreg, imm);

+            if (rh != 7)

+                *destreg = destval;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x84

+****************************************************************************/

+static void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("TEST\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        test_byte(destval, *srcreg);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        test_byte(destval, *srcreg);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        test_byte(destval, *srcreg);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        test_byte(*destreg, *srcreg);

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x85

+****************************************************************************/

+static void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("TEST\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_long(destval, *srcreg);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_word(destval, *srcreg);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_long(destval, *srcreg);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_word(destval, *srcreg);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_long(destval, *srcreg);

+        } else {

+            u16 destval;

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_word(destval, *srcreg);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_long(*destreg, *srcreg);

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            test_word(*destreg, *srcreg);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x86

+****************************************************************************/

+static void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+    u8 destval;

+    u8 tmp;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XCHG\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        tmp = *srcreg;

+        *srcreg = destval;

+        destval = tmp;

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        tmp = *srcreg;

+        *srcreg = destval;

+        destval = tmp;

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        destval = fetch_data_byte(destoffset);

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        tmp = *srcreg;

+        *srcreg = destval;

+        destval = tmp;

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        tmp = *srcreg;

+        *srcreg = *destreg;

+        *destreg = tmp;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x87

+****************************************************************************/

+static void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XCHG\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *srcreg;

+            u32 destval,tmp;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = destval;

+            destval = tmp;

+            store_data_long(destoffset, destval);

+        } else {

+            u16 *srcreg;

+            u16 destval,tmp;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = destval;

+            destval = tmp;

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *srcreg;

+            u32 destval,tmp;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = destval;

+            destval = tmp;

+            store_data_long(destoffset, destval);

+        } else {

+            u16 *srcreg;

+            u16 destval,tmp;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = destval;

+            destval = tmp;

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *srcreg;

+            u32 destval,tmp;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_long(destoffset);

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = destval;

+            destval = tmp;

+            store_data_long(destoffset, destval);

+        } else {

+            u16 *srcreg;

+            u16 destval,tmp;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            destval = fetch_data_word(destoffset);

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = destval;

+            destval = tmp;

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+            u32 tmp;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = *destreg;

+            *destreg = tmp;

+        } else {

+            u16 *destreg,*srcreg;

+            u16 tmp;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            tmp = *srcreg;

+            *srcreg = *destreg;

+            *destreg = tmp;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x88

+****************************************************************************/

+static void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        store_data_byte(destoffset, *srcreg);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        store_data_byte(destoffset, *srcreg);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        store_data_byte(destoffset, *srcreg);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = *srcreg;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x89

+****************************************************************************/

+static void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u32 destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            store_data_long(destoffset, *srcreg);

+        } else {

+            u16 *srcreg;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            store_data_word(destoffset, *srcreg);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            store_data_long(destoffset, *srcreg);

+        } else {

+            u16 *srcreg;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            store_data_word(destoffset, *srcreg);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            store_data_long(destoffset, *srcreg);

+        } else {

+            u16 *srcreg;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            store_data_word(destoffset, *srcreg);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg,*srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = *srcreg;

+        } else {

+            u16 *destreg,*srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = *srcreg;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x8a

+****************************************************************************/

+static void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg, *srcreg;

+    uint srcoffset;

+    u8 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = srcval;

+        break;

+    case 1:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = srcval;

+        break;

+    case 2:

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_byte(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = srcval;

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = *srcreg;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x8b

+****************************************************************************/

+static void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = srcval;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm00_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = srcval;

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = srcval;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm01_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = srcval;

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+            u32 srcval;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_long(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = srcval;

+        } else {

+            u16 *destreg;

+            u16 srcval;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcoffset = decode_rm10_address(rl);

+            srcval = fetch_data_word(srcoffset);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = srcval;

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg, *srcreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = *srcreg;

+        } else {

+            u16 *destreg, *srcreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            srcreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = *srcreg;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x8c

+****************************************************************************/

+static void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u16 *destreg, *srcreg;

+    uint destoffset;

+    u16 destval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",");

+        srcreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = *srcreg;

+        store_data_word(destoffset, destval);

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",");

+        srcreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = *srcreg;

+        store_data_word(destoffset, destval);

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",");

+        srcreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        destval = *srcreg;

+        store_data_word(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_WORD_REGISTER(rl);

+        DECODE_PRINTF(",");

+        srcreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = *srcreg;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x8d

+****************************************************************************/

+static void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LEA\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_ADDR) {

+            u32 *srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *srcreg = (u32)destoffset;

+        } else {

+            u16 *srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *srcreg = (u16)destoffset;

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_ADDR) {

+            u32 *srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *srcreg = (u32)destoffset;

+        } else {

+            u16 *srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *srcreg = (u16)destoffset;

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_ADDR) {

+            u32 *srcreg = DECODE_RM_LONG_REGISTER(rh);

+            DECODE_PRINTF(",");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *srcreg = (u32)destoffset;

+        } else {

+            u16 *srcreg = DECODE_RM_WORD_REGISTER(rh);

+            DECODE_PRINTF(",");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *srcreg = (u16)destoffset;

+        }

+        break;

+    case 3:                     /* register to register */

+        /* undefined.  Do nothing. */

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x8e

+****************************************************************************/

+static void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u16 *destreg, *srcreg;

+    uint srcoffset;

+    u16 srcval;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        destreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        srcval = fetch_data_word(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = srcval;

+        break;

+    case 1:

+        destreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        srcval = fetch_data_word(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = srcval;

+        break;

+    case 2:

+        destreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        srcval = fetch_data_word(srcoffset);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = srcval;

+        break;

+    case 3:                     /* register to register */

+        destreg = decode_rm_seg_register(rh);

+        DECODE_PRINTF(",");

+        srcreg = DECODE_RM_WORD_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *destreg = *srcreg;

+        break;

+    }

+    /*

+     * Clean up, and reset all the R_xSP pointers to the correct

+     * locations.  This is about 3x too much overhead (doing all the

+     * segreg ptrs when only one is needed, but this instruction

+     * *cannot* be that common, and this isn't too much work anyway.

+     */

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x8f

+****************************************************************************/

+static void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("POP\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    if (rh != 0) {

+        DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");

+        HALT_SYS();

+    }

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = pop_long();

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = pop_word();

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = pop_long();

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = pop_word();

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = pop_long();

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            destval = pop_word();

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = pop_long();

+        } else {

+            u16 *destreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = pop_word();

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x90

+****************************************************************************/

+static void x86emuOp_nop(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("NOP\n");

+    TRACE_AND_STEP();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x91

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_CX(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,ECX\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,CX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_ECX;

+        M.x86.R_ECX = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_CX;

+        M.x86.R_CX = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x92

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_DX(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,EDX\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,DX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_EDX;

+        M.x86.R_EDX = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_DX;

+        M.x86.R_DX = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x93

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_BX(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,EBX\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,BX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_EBX;

+        M.x86.R_EBX = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_BX;

+        M.x86.R_BX = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x94

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_SP(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,ESP\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,SP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_ESP;

+        M.x86.R_ESP = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_SP;

+        M.x86.R_SP = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x95

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_BP(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,EBP\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,BP\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_EBP;

+        M.x86.R_EBP = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_BP;

+        M.x86.R_BP = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x96

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_SI(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,ESI\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,SI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_ESI;

+        M.x86.R_ESI = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_SI;

+        M.x86.R_SI = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x97

+****************************************************************************/

+static void x86emuOp_xchg_word_AX_DI(u8 X86EMU_UNUSED(op1))

+{

+    u32 tmp;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("XCHG\tEAX,EDI\n");

+    } else {

+        DECODE_PRINTF("XCHG\tAX,DI\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        tmp = M.x86.R_EAX;

+        M.x86.R_EAX = M.x86.R_EDI;

+        M.x86.R_EDI = tmp;

+    } else {

+        tmp = M.x86.R_AX;

+        M.x86.R_AX = M.x86.R_DI;

+        M.x86.R_DI = (u16)tmp;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x98

+****************************************************************************/

+static void x86emuOp_cbw(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("CWDE\n");

+    } else {

+        DECODE_PRINTF("CBW\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        if (M.x86.R_AX & 0x8000) {

+            M.x86.R_EAX |= 0xffff0000;

+        } else {

+            M.x86.R_EAX &= 0x0000ffff;

+        }

+    } else {

+        if (M.x86.R_AL & 0x80) {

+            M.x86.R_AH = 0xff;

+        } else {

+            M.x86.R_AH = 0x0;

+        }

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x99

+****************************************************************************/

+static void x86emuOp_cwd(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("CDQ\n");

+    } else {

+        DECODE_PRINTF("CWD\n");

+    }

+    DECODE_PRINTF("CWD\n");

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        if (M.x86.R_EAX & 0x80000000) {

+            M.x86.R_EDX = 0xffffffff;

+        } else {

+            M.x86.R_EDX = 0x0;

+        }

+    } else {

+        if (M.x86.R_AX & 0x8000) {

+            M.x86.R_DX = 0xffff;

+        } else {

+            M.x86.R_DX = 0x0;

+        }

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x9a

+****************************************************************************/

+static void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 farseg, faroff;

+

+    START_OF_INSTR();

+	DECODE_PRINTF("CALL\t");

+	faroff = fetch_word_imm();

+	farseg = fetch_word_imm();

+	DECODE_PRINTF2("%04x:", farseg);

+	DECODE_PRINTF2("%04x\n", faroff);

+	CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR ");

+

+    /* XXX

+     * 

+     * Hooked interrupt vectors calling into our "BIOS" will cause

+     * problems unless all intersegment stuff is checked for BIOS

+     * access.  Check needed here.  For moment, let it alone.

+     */

+    TRACE_AND_STEP();

+    push_word(M.x86.R_CS);

+    M.x86.R_CS = farseg;

+    push_word(M.x86.R_IP);

+    M.x86.R_IP = faroff;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x9b

+****************************************************************************/

+static void x86emuOp_wait(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("WAIT");

+    TRACE_AND_STEP();

+    /* NADA.  */

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x9c

+****************************************************************************/

+static void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1))

+{

+    u32 flags;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("PUSHFD\n");

+    } else {

+        DECODE_PRINTF("PUSHF\n");

+    }

+    TRACE_AND_STEP();

+

+    /* clear out *all* bits not representing flags, and turn on real bits */

+    flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON;

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        push_long(flags);

+    } else {

+        push_word((u16)flags);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x9d

+****************************************************************************/

+static void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("POPFD\n");

+    } else {

+        DECODE_PRINTF("POPF\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EFLG = pop_long();

+    } else {

+        M.x86.R_FLG = pop_word();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x9e

+****************************************************************************/

+static void x86emuOp_sahf(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("SAHF\n");

+    TRACE_AND_STEP();

+    /* clear the lower bits of the flag register */

+    M.x86.R_FLG &= 0xffffff00;

+    /* or in the AH register into the flags register */

+    M.x86.R_FLG |= M.x86.R_AH;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0x9f

+****************************************************************************/

+static void x86emuOp_lahf(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("LAHF\n");

+    TRACE_AND_STEP();

+	M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff);

+    /*undocumented TC++ behavior??? Nope.  It's documented, but

+       you have too look real hard to notice it. */

+    M.x86.R_AH |= 0x2;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa0

+****************************************************************************/

+static void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 offset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tAL,");

+    offset = fetch_word_imm();

+    DECODE_PRINTF2("[%04x]\n", offset);

+    TRACE_AND_STEP();

+    M.x86.R_AL = fetch_data_byte(offset);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa1

+****************************************************************************/

+static void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 offset;

+

+    START_OF_INSTR();

+    offset = fetch_word_imm();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset);

+    } else {

+        DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset);

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = fetch_data_long(offset);

+    } else {

+        M.x86.R_AX = fetch_data_word(offset);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa2

+****************************************************************************/

+static void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 offset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    offset = fetch_word_imm();

+    DECODE_PRINTF2("[%04x],AL\n", offset);

+    TRACE_AND_STEP();

+    store_data_byte(offset, M.x86.R_AL);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa3

+****************************************************************************/

+static void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 offset;

+

+    START_OF_INSTR();

+    offset = fetch_word_imm();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset);

+    } else {

+        DECODE_PRINTF2("MOV\t[%04x],AX\n", offset);

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        store_data_long(offset, M.x86.R_EAX);

+    } else {

+        store_data_word(offset, M.x86.R_AX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa4

+****************************************************************************/

+static void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1))

+{

+    u8  val;

+    u32 count;

+    int inc;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOVS\tBYTE\n");

+    if (ACCESS_FLAG(F_DF))   /* down */

+        inc = -1;

+    else

+        inc = 1;

+    TRACE_AND_STEP();

+    count = 1;

+    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {

+        /* dont care whether REPE or REPNE */

+        /* move them until CX is ZERO. */

+        count = M.x86.R_CX;

+        M.x86.R_CX = 0;

+        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);

+    }

+    while (count--) {

+        val = fetch_data_byte(M.x86.R_SI);

+        store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val);

+        M.x86.R_SI += inc;

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa5

+****************************************************************************/

+static void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1))

+{

+    u32 val;

+    int inc;

+    u32 count;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOVS\tDWORD\n");

+        if (ACCESS_FLAG(F_DF))      /* down */

+            inc = -4;

+        else

+            inc = 4;

+    } else {

+        DECODE_PRINTF("MOVS\tWORD\n");

+        if (ACCESS_FLAG(F_DF))      /* down */

+            inc = -2;

+        else

+            inc = 2;

+    }

+    TRACE_AND_STEP();

+    count = 1;

+    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {

+        /* dont care whether REPE or REPNE */

+        /* move them until CX is ZERO. */

+        count = M.x86.R_CX;

+        M.x86.R_CX = 0;

+        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);

+    }

+    while (count--) {

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            val = fetch_data_long(M.x86.R_SI);

+            store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val);

+        } else {

+            val = fetch_data_word(M.x86.R_SI);

+            store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val);

+        }

+        M.x86.R_SI += inc;

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa6

+****************************************************************************/

+static void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1))

+{

+    s8 val1, val2;

+    int inc;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("CMPS\tBYTE\n");

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_DF))   /* down */

+        inc = -1;

+    else

+        inc = 1;

+

+    if (M.x86.mode & SYSMODE_PREFIX_REPE) {

+        /* REPE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            val1 = fetch_data_byte(M.x86.R_SI);

+            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);

+                     cmp_byte(val1, val2);

+            M.x86.R_CX -= 1;

+            M.x86.R_SI += inc;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF) == 0)

+                break;

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPE;

+    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {

+        /* REPNE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            val1 = fetch_data_byte(M.x86.R_SI);

+            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_byte(val1, val2);

+            M.x86.R_CX -= 1;

+            M.x86.R_SI += inc;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF))

+                break;          /* zero flag set means equal */

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;

+    } else {

+        val1 = fetch_data_byte(M.x86.R_SI);

+        val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);

+        cmp_byte(val1, val2);

+        M.x86.R_SI += inc;

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa7

+****************************************************************************/

+static void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1))

+{

+    u32 val1,val2;

+    int inc;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("CMPS\tDWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -4;

+        else

+            inc = 4;

+    } else {

+        DECODE_PRINTF("CMPS\tWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -2;

+        else

+            inc = 2;

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_REPE) {

+        /* REPE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                val1 = fetch_data_long(M.x86.R_SI);

+                val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_long(val1, val2);

+            } else {

+                val1 = fetch_data_word(M.x86.R_SI);

+                val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_word((u16)val1, (u16)val2);

+            }

+            M.x86.R_CX -= 1;

+            M.x86.R_SI += inc;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF) == 0)

+                break;

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPE;

+    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {

+        /* REPNE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                val1 = fetch_data_long(M.x86.R_SI);

+                val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_long(val1, val2);

+            } else {

+                val1 = fetch_data_word(M.x86.R_SI);

+                val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_word((u16)val1, (u16)val2);

+            }

+            M.x86.R_CX -= 1;

+            M.x86.R_SI += inc;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF))

+                break;          /* zero flag set means equal */

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;

+    } else {

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            val1 = fetch_data_long(M.x86.R_SI);

+            val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_long(val1, val2);

+        } else {

+            val1 = fetch_data_word(M.x86.R_SI);

+            val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_word((u16)val1, (u16)val2);

+        }

+        M.x86.R_SI += inc;

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa8

+****************************************************************************/

+static void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("TEST\tAL,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%04x\n", imm);

+    TRACE_AND_STEP();

+	test_byte(M.x86.R_AL, (u8)imm);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xa9

+****************************************************************************/

+static void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("TEST\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("TEST\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        test_long(M.x86.R_EAX, srcval);

+    } else {

+        test_word(M.x86.R_AX, (u16)srcval);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xaa

+****************************************************************************/

+static void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1))

+{

+    int inc;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("STOS\tBYTE\n");

+    if (ACCESS_FLAG(F_DF))   /* down */

+        inc = -1;

+    else

+        inc = 1;

+    TRACE_AND_STEP();

+    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {

+        /* dont care whether REPE or REPNE */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);

+            M.x86.R_CX -= 1;

+            M.x86.R_DI += inc;

+        }

+        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);

+    } else {

+        store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xab

+****************************************************************************/

+static void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1))

+{

+    int inc;

+    u32 count;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("STOS\tDWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -4;

+        else

+            inc = 4;

+    } else {

+        DECODE_PRINTF("STOS\tWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -2;

+        else

+            inc = 2;

+    }

+    TRACE_AND_STEP();

+    count = 1;

+    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {

+        /* dont care whether REPE or REPNE */

+        /* move them until CX is ZERO. */

+        count = M.x86.R_CX;

+        M.x86.R_CX = 0;

+        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);

+    }

+    while (count--) {

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX);

+        } else {

+            store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX);

+        }

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xac

+****************************************************************************/

+static void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1))

+{

+    int inc;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LODS\tBYTE\n");

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_DF))   /* down */

+        inc = -1;

+    else

+        inc = 1;

+    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {

+        /* dont care whether REPE or REPNE */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            M.x86.R_AL = fetch_data_byte(M.x86.R_SI);

+            M.x86.R_CX -= 1;

+            M.x86.R_SI += inc;

+        }

+        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);

+    } else {

+        M.x86.R_AL = fetch_data_byte(M.x86.R_SI);

+        M.x86.R_SI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xad

+****************************************************************************/

+static void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1))

+{

+    int inc;

+    u32 count;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("LODS\tDWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -4;

+        else

+            inc = 4;

+    } else {

+        DECODE_PRINTF("LODS\tWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -2;

+        else

+            inc = 2;

+    }

+    TRACE_AND_STEP();

+    count = 1;

+    if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {

+        /* dont care whether REPE or REPNE */

+        /* move them until CX is ZERO. */

+        count = M.x86.R_CX;

+        M.x86.R_CX = 0;

+        M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);

+    }

+    while (count--) {

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            M.x86.R_EAX = fetch_data_long(M.x86.R_SI);

+        } else {

+            M.x86.R_AX = fetch_data_word(M.x86.R_SI);

+        }

+        M.x86.R_SI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xae

+****************************************************************************/

+static void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1))

+{

+    s8 val2;

+    int inc;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("SCAS\tBYTE\n");

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_DF))   /* down */

+        inc = -1;

+    else

+        inc = 1;

+    if (M.x86.mode & SYSMODE_PREFIX_REPE) {

+        /* REPE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_byte(M.x86.R_AL, val2);

+            M.x86.R_CX -= 1;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF) == 0)

+                break;

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPE;

+    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {

+        /* REPNE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_byte(M.x86.R_AL, val2);

+            M.x86.R_CX -= 1;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF))

+                break;          /* zero flag set means equal */

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;

+    } else {

+        val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);

+        cmp_byte(M.x86.R_AL, val2);

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xaf

+****************************************************************************/

+static void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1))

+{

+    int inc;

+    u32 val;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("SCAS\tDWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -4;

+        else

+            inc = 4;

+    } else {

+        DECODE_PRINTF("SCAS\tWORD\n");

+        if (ACCESS_FLAG(F_DF))   /* down */

+            inc = -2;

+        else

+            inc = 2;

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_REPE) {

+        /* REPE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_long(M.x86.R_EAX, val);

+            } else {

+                val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_word(M.x86.R_AX, (u16)val);

+            }

+            M.x86.R_CX -= 1;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF) == 0)

+                break;

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPE;

+    } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {

+        /* REPNE  */

+        /* move them until CX is ZERO. */

+        while (M.x86.R_CX != 0) {

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_long(M.x86.R_EAX, val);

+            } else {

+                val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);

+                cmp_word(M.x86.R_AX, (u16)val);

+            }

+            M.x86.R_CX -= 1;

+            M.x86.R_DI += inc;

+            if (ACCESS_FLAG(F_ZF))

+                break;          /* zero flag set means equal */

+        }

+        M.x86.mode &= ~SYSMODE_PREFIX_REPNE;

+    } else {

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_long(M.x86.R_EAX, val);

+        } else {

+            val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);

+            cmp_word(M.x86.R_AX, (u16)val);

+        }

+        M.x86.R_DI += inc;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb0

+****************************************************************************/

+static void x86emuOp_mov_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tAL,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_AL = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb1

+****************************************************************************/

+static void x86emuOp_mov_byte_CL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tCL,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_CL = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb2

+****************************************************************************/

+static void x86emuOp_mov_byte_DL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tDL,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_DL = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb3

+****************************************************************************/

+static void x86emuOp_mov_byte_BL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tBL,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_BL = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb4

+****************************************************************************/

+static void x86emuOp_mov_byte_AH_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tAH,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_AH = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb5

+****************************************************************************/

+static void x86emuOp_mov_byte_CH_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tCH,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_CH = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb6

+****************************************************************************/

+static void x86emuOp_mov_byte_DH_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tDH,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_DH = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb7

+****************************************************************************/

+static void x86emuOp_mov_byte_BH_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\tBH,");

+    imm = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", imm);

+    TRACE_AND_STEP();

+    M.x86.R_BH = imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb8

+****************************************************************************/

+static void x86emuOp_mov_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tEAX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tAX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = srcval;

+    } else {

+        M.x86.R_AX = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xb9

+****************************************************************************/

+static void x86emuOp_mov_word_CX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tECX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tCX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ECX = srcval;

+    } else {

+        M.x86.R_CX = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xba

+****************************************************************************/

+static void x86emuOp_mov_word_DX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tEDX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tDX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDX = srcval;

+    } else {

+        M.x86.R_DX = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xbb

+****************************************************************************/

+static void x86emuOp_mov_word_BX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tEBX,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tBX,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBX = srcval;

+    } else {

+        M.x86.R_BX = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xbc

+****************************************************************************/

+static void x86emuOp_mov_word_SP_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tESP,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tSP,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESP = srcval;

+    } else {

+        M.x86.R_SP = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xbd

+****************************************************************************/

+static void x86emuOp_mov_word_BP_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tEBP,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tBP,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EBP = srcval;

+    } else {

+        M.x86.R_BP = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xbe

+****************************************************************************/

+static void x86emuOp_mov_word_SI_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tESI,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tSI,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_ESI = srcval;

+    } else {

+        M.x86.R_SI = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xbf

+****************************************************************************/

+static void x86emuOp_mov_word_DI_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u32 srcval;

+

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("MOV\tEDI,");

+        srcval = fetch_long_imm();

+    } else {

+        DECODE_PRINTF("MOV\tDI,");

+        srcval = fetch_word_imm();

+    }

+    DECODE_PRINTF2("%x\n", srcval);

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EDI = srcval;

+    } else {

+        M.x86.R_DI = (u16)srcval;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/* used by opcodes c0, d0, and d2. */

+static u8(*opcD0_byte_operation[])(u8 d, u8 s) =

+{

+    rol_byte,

+    ror_byte,

+    rcl_byte,

+    rcr_byte,

+    shl_byte,

+    shr_byte,

+    shl_byte,           /* sal_byte === shl_byte  by definition */

+    sar_byte,

+};

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc0

+****************************************************************************/

+static void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 destval;

+    u8 amt;

+

+    /*

+     * Yet another weirdo special case instruction format.  Part of

+     * the opcode held below in "RH".  Doubly nested case would

+     * result, except that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ROL\t");

+            break;

+        case 1:

+            DECODE_PRINTF("ROR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("RCL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("RCR\t");

+            break;

+        case 4:

+            DECODE_PRINTF("SHL\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SHR\t");

+            break;

+        case 6:

+            DECODE_PRINTF("SAL\t");

+            break;

+        case 7:

+            DECODE_PRINTF("SAR\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        amt = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", amt);

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, amt);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        amt = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", amt);

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, amt);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        amt = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", amt);

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, amt);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        amt = fetch_byte_imm();

+        DECODE_PRINTF2(",%x\n", amt);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (*destreg, amt);

+        *destreg = destval;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/* used by opcodes c1, d1, and d3. */

+static u16(*opcD1_word_operation[])(u16 s, u8 d) =

+{

+    rol_word,

+    ror_word,

+    rcl_word,

+    rcr_word,

+    shl_word,

+    shr_word,

+    shl_word,           /* sal_byte === shl_byte  by definition */

+    sar_word,

+};

+

+/* used by opcodes c1, d1, and d3. */

+static u32 (*opcD1_long_operation[])(u32 s, u8 d) =

+{

+    rol_long,

+    ror_long,

+    rcl_long,

+    rcr_long,

+    shl_long,

+    shr_long,

+    shl_long,           /* sal_byte === shl_byte  by definition */

+    sar_long,

+};

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc1

+****************************************************************************/

+static void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+    u8 amt;

+

+    /*

+     * Yet another weirdo special case instruction format.  Part of

+     * the opcode held below in "RH".  Doubly nested case would

+     * result, except that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ROL\t");

+            break;

+        case 1:

+            DECODE_PRINTF("ROR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("RCL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("RCR\t");

+            break;

+        case 4:

+            DECODE_PRINTF("SHL\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SHR\t");

+            break;

+        case 6:

+            DECODE_PRINTF("SAL\t");

+            break;

+        case 7:

+            DECODE_PRINTF("SAR\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, amt);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, amt);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, amt);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, amt);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, amt);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, amt);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            TRACE_AND_STEP();

+            *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);

+        } else {

+            u16 *destreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            amt = fetch_byte_imm();

+            DECODE_PRINTF2(",%x\n", amt);

+            TRACE_AND_STEP();

+            *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc2

+****************************************************************************/

+static void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("RET\t");

+    imm = fetch_word_imm();

+    DECODE_PRINTF2("%x\n", imm);

+	RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip);

+	TRACE_AND_STEP();

+    M.x86.R_IP = pop_word();

+    M.x86.R_SP += imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc3

+****************************************************************************/

+static void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("RET\n");

+	RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip);

+	TRACE_AND_STEP();

+    M.x86.R_IP = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc4

+****************************************************************************/

+static void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rh, rl;

+    u16 *dstreg;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LES\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        dstreg = DECODE_RM_WORD_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *dstreg = fetch_data_word(srcoffset);

+        M.x86.R_ES = fetch_data_word(srcoffset + 2);

+        break;

+    case 1:

+        dstreg = DECODE_RM_WORD_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *dstreg = fetch_data_word(srcoffset);

+        M.x86.R_ES = fetch_data_word(srcoffset + 2);

+        break;

+    case 2:

+        dstreg = DECODE_RM_WORD_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *dstreg = fetch_data_word(srcoffset);

+        M.x86.R_ES = fetch_data_word(srcoffset + 2);

+        break;

+    case 3:                     /* register to register */

+        /* UNDEFINED! */

+        TRACE_AND_STEP();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc5

+****************************************************************************/

+static void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rh, rl;

+    u16 *dstreg;

+    uint srcoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LDS\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:

+        dstreg = DECODE_RM_WORD_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm00_address(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *dstreg = fetch_data_word(srcoffset);

+        M.x86.R_DS = fetch_data_word(srcoffset + 2);

+        break;

+    case 1:

+        dstreg = DECODE_RM_WORD_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm01_address(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *dstreg = fetch_data_word(srcoffset);

+        M.x86.R_DS = fetch_data_word(srcoffset + 2);

+        break;

+    case 2:

+        dstreg = DECODE_RM_WORD_REGISTER(rh);

+        DECODE_PRINTF(",");

+        srcoffset = decode_rm10_address(rl);

+        DECODE_PRINTF("\n");

+        TRACE_AND_STEP();

+        *dstreg = fetch_data_word(srcoffset);

+        M.x86.R_DS = fetch_data_word(srcoffset + 2);

+        break;

+    case 3:                     /* register to register */

+        /* UNDEFINED! */

+        TRACE_AND_STEP();

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc6

+****************************************************************************/

+static void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    if (rh != 0) {

+        DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n");

+        HALT_SYS();

+    }

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%2x\n", imm);

+        TRACE_AND_STEP();

+        store_data_byte(destoffset, imm);

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%2x\n", imm);

+        TRACE_AND_STEP();

+        store_data_byte(destoffset, imm);

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%2x\n", imm);

+        TRACE_AND_STEP();

+        store_data_byte(destoffset, imm);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        imm = fetch_byte_imm();

+        DECODE_PRINTF2(",%2x\n", imm);

+        TRACE_AND_STEP();

+        *destreg = imm;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc7

+****************************************************************************/

+static void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("MOV\t");

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    if (rh != 0) {

+        DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");

+        HALT_SYS();

+    }

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            store_data_long(destoffset, imm);

+        } else {

+            u16 imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            store_data_word(destoffset, imm);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            store_data_long(destoffset, imm);

+        } else {

+            u16 imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            store_data_word(destoffset, imm);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 imm;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            store_data_long(destoffset, imm);

+        } else {

+            u16 imm;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            store_data_word(destoffset, imm);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+			u32 *destreg;

+			u32 imm;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            imm = fetch_long_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            *destreg = imm;

+        } else {

+			u16 *destreg;

+			u16 imm;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            imm = fetch_word_imm();

+            DECODE_PRINTF2(",%x\n", imm);

+            TRACE_AND_STEP();

+            *destreg = imm;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc8

+****************************************************************************/

+static void x86emuOp_enter(u8 X86EMU_UNUSED(op1))

+{

+    u16 local,frame_pointer;

+    u8  nesting;

+    int i;

+

+    START_OF_INSTR();

+    local = fetch_word_imm();

+    nesting = fetch_byte_imm();

+    DECODE_PRINTF2("ENTER %x\n", local);

+    DECODE_PRINTF2(",%x\n", nesting);

+    TRACE_AND_STEP();

+    push_word(M.x86.R_BP);

+    frame_pointer = M.x86.R_SP;

+    if (nesting > 0) {

+        for (i = 1; i < nesting; i++) {

+            M.x86.R_BP -= 2;

+            push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP));

+            }

+        push_word(frame_pointer);

+        }

+    M.x86.R_BP = frame_pointer;

+    M.x86.R_SP = (u16)(M.x86.R_SP - local);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xc9

+****************************************************************************/

+static void x86emuOp_leave(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("LEAVE\n");

+    TRACE_AND_STEP();

+    M.x86.R_SP = M.x86.R_BP;

+    M.x86.R_BP = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xca

+****************************************************************************/

+static void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 imm;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("RETF\t");

+    imm = fetch_word_imm();

+    DECODE_PRINTF2("%x\n", imm);

+	RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip);

+	TRACE_AND_STEP();

+    M.x86.R_IP = pop_word();

+    M.x86.R_CS = pop_word();

+    M.x86.R_SP += imm;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xcb

+****************************************************************************/

+static void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("RETF\n");

+	RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip);

+	TRACE_AND_STEP();

+    M.x86.R_IP = pop_word();

+    M.x86.R_CS = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xcc

+****************************************************************************/

+static void x86emuOp_int3(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("INT 3\n");

+    TRACE_AND_STEP();

+    if (_X86EMU_intrTab[3]) {

+	(*_X86EMU_intrTab[3])(3);

+    } else {

+        push_word((u16)M.x86.R_FLG);

+        CLEAR_FLAG(F_IF);

+        CLEAR_FLAG(F_TF);

+        push_word(M.x86.R_CS);

+        M.x86.R_CS = mem_access_word(3 * 4 + 2);

+        push_word(M.x86.R_IP);

+        M.x86.R_IP = mem_access_word(3 * 4);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xcd

+****************************************************************************/

+static void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 intnum;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("INT\t");

+    intnum = fetch_byte_imm();

+    DECODE_PRINTF2("%x\n", intnum);

+    TRACE_AND_STEP();

+    if (_X86EMU_intrTab[intnum]) {

+	(*_X86EMU_intrTab[intnum])(intnum);

+    } else {

+        push_word((u16)M.x86.R_FLG);

+        CLEAR_FLAG(F_IF);

+        CLEAR_FLAG(F_TF);

+        push_word(M.x86.R_CS);

+        M.x86.R_CS = mem_access_word(intnum * 4 + 2);

+        push_word(M.x86.R_IP);

+        M.x86.R_IP = mem_access_word(intnum * 4);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xce

+****************************************************************************/

+static void x86emuOp_into(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("INTO\n");

+    TRACE_AND_STEP();

+    if (ACCESS_FLAG(F_OF)) {

+	if (_X86EMU_intrTab[4]) {

+	    (*_X86EMU_intrTab[4])(4);

+        } else {

+            push_word((u16)M.x86.R_FLG);

+            CLEAR_FLAG(F_IF);

+            CLEAR_FLAG(F_TF);

+            push_word(M.x86.R_CS);

+            M.x86.R_CS = mem_access_word(4 * 4 + 2);

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = mem_access_word(4 * 4);

+        }

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xcf

+****************************************************************************/

+static void x86emuOp_iret(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("IRET\n");

+

+    TRACE_AND_STEP();

+

+    M.x86.R_IP = pop_word();

+    M.x86.R_CS = pop_word();

+    M.x86.R_FLG = pop_word();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd0

+****************************************************************************/

+static void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 destval;

+

+    /*

+     * Yet another weirdo special case instruction format.  Part of

+     * the opcode held below in "RH".  Doubly nested case would

+     * result, except that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the

+           above test is done twice. */

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ROL\t");

+            break;

+        case 1:

+            DECODE_PRINTF("ROR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("RCL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("RCR\t");

+            break;

+        case 4:

+            DECODE_PRINTF("SHL\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SHR\t");

+            break;

+        case 6:

+            DECODE_PRINTF("SAL\t");

+            break;

+        case 7:

+            DECODE_PRINTF("SAR\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",1\n");

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, 1);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",1\n");

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, 1);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",1\n");

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, 1);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",1\n");

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (*destreg, 1);

+        *destreg = destval;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd1

+****************************************************************************/

+static void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    /*

+     * Yet another weirdo special case instruction format.  Part of

+     * the opcode held below in "RH".  Doubly nested case would

+     * result, except that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the

+           above test is done twice. */

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ROL\t");

+            break;

+        case 1:

+            DECODE_PRINTF("ROR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("RCL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("RCR\t");

+            break;

+        case 4:

+            DECODE_PRINTF("SHL\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SHR\t");

+            break;

+        case 6:

+            DECODE_PRINTF("SAL\t");

+            break;

+        case 7:

+            DECODE_PRINTF("SAR\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",1\n");

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, 1);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",1\n");

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, 1);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",1\n");

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, 1);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",1\n");

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, 1);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",1\n");

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, 1);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("BYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",1\n");

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, 1);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+			u32 destval;

+			u32 *destreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",1\n");

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (*destreg, 1);

+            *destreg = destval;

+        } else {

+			u16 destval;

+			u16 *destreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",1\n");

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (*destreg, 1);

+            *destreg = destval;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd2

+****************************************************************************/

+static void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 destval;

+    u8 amt;

+

+    /*

+     * Yet another weirdo special case instruction format.  Part of

+     * the opcode held below in "RH".  Doubly nested case would

+     * result, except that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ROL\t");

+            break;

+        case 1:

+            DECODE_PRINTF("ROR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("RCL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("RCR\t");

+            break;

+        case 4:

+            DECODE_PRINTF("SHL\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SHR\t");

+            break;

+        case 6:

+            DECODE_PRINTF("SAL\t");

+            break;

+        case 7:

+            DECODE_PRINTF("SAR\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    amt = M.x86.R_CL;

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF(",CL\n");

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, amt);

+        store_data_byte(destoffset, destval);

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF(",CL\n");

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, amt);

+        store_data_byte(destoffset, destval);

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF(",CL\n");

+        destval = fetch_data_byte(destoffset);

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (destval, amt);

+        store_data_byte(destoffset, destval);

+        break;

+    case 3:                     /* register to register */

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF(",CL\n");

+        TRACE_AND_STEP();

+        destval = (*opcD0_byte_operation[rh]) (*destreg, amt);

+        *destreg = destval;

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd3

+****************************************************************************/

+static void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+    u8 amt;

+

+    /*

+     * Yet another weirdo special case instruction format.  Part of

+     * the opcode held below in "RH".  Doubly nested case would

+     * result, except that the decoded instruction

+     */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("ROL\t");

+            break;

+        case 1:

+            DECODE_PRINTF("ROR\t");

+            break;

+        case 2:

+            DECODE_PRINTF("RCL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("RCR\t");

+            break;

+        case 4:

+            DECODE_PRINTF("SHL\t");

+            break;

+        case 5:

+            DECODE_PRINTF("SHR\t");

+            break;

+        case 6:

+            DECODE_PRINTF("SAL\t");

+            break;

+        case 7:

+            DECODE_PRINTF("SAR\t");

+            break;

+        }

+    }

+#endif

+    /* know operation, decode the mod byte to find the addressing

+       mode. */

+    amt = M.x86.R_CL;

+    switch (mod) {

+    case 0:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",CL\n");

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, amt);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",CL\n");

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, amt);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 1:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",CL\n");

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, amt);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",CL\n");

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, amt);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 2:

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 destval;

+

+            DECODE_PRINTF("DWORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",CL\n");

+            destval = fetch_data_long(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_long_operation[rh]) (destval, amt);

+            store_data_long(destoffset, destval);

+        } else {

+            u16 destval;

+

+            DECODE_PRINTF("WORD PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",CL\n");

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            destval = (*opcD1_word_operation[rh]) (destval, amt);

+            store_data_word(destoffset, destval);

+        }

+        break;

+    case 3:                     /* register to register */

+        if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+            u32 *destreg;

+

+            destreg = DECODE_RM_LONG_REGISTER(rl);

+            DECODE_PRINTF(",CL\n");

+            TRACE_AND_STEP();

+            *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);

+        } else {

+            u16 *destreg;

+

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF(",CL\n");

+            TRACE_AND_STEP();

+            *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd4

+****************************************************************************/

+static void x86emuOp_aam(u8 X86EMU_UNUSED(op1))

+{

+    u8 a;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AAM\n");

+    a = fetch_byte_imm();      /* this is a stupid encoding. */

+    if (a != 10) {

+	/* fix: add base decoding

+	   aam_word(u8 val, int base a) */

+        DECODE_PRINTF("ERROR DECODING AAM\n");

+        TRACE_REGS();

+        HALT_SYS();

+    }

+    TRACE_AND_STEP();

+    /* note the type change here --- returning AL and AH in AX. */

+    M.x86.R_AX = aam_word(M.x86.R_AL);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd5

+****************************************************************************/

+static void x86emuOp_aad(u8 X86EMU_UNUSED(op1))

+{

+    u8 a;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("AAD\n");

+    a = fetch_byte_imm();

+    if (a != 10) {

+	/* fix: add base decoding

+	   aad_word(u16 val, int base a) */

+        DECODE_PRINTF("ERROR DECODING AAM\n");

+        TRACE_REGS();

+        HALT_SYS();

+    }

+    TRACE_AND_STEP();

+    M.x86.R_AX = aad_word(M.x86.R_AX);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/* opcode 0xd6 ILLEGAL OPCODE */

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xd7

+****************************************************************************/

+static void x86emuOp_xlat(u8 X86EMU_UNUSED(op1))

+{

+    u16 addr;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("XLAT\n");

+    TRACE_AND_STEP();

+	addr = (u16)(M.x86.R_BX + (u8)M.x86.R_AL);

+    M.x86.R_AL = fetch_data_byte(addr);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/* instuctions  D8 .. DF are in i87_ops.c */

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe0

+****************************************************************************/

+static void x86emuOp_loopne(u8 X86EMU_UNUSED(op1))

+{

+    s16 ip;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LOOPNE\t");

+    ip = (s8) fetch_byte_imm();

+    ip += (s16) M.x86.R_IP;

+    DECODE_PRINTF2("%04x\n", ip);

+    TRACE_AND_STEP();

+    M.x86.R_CX -= 1;

+    if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF))      /* CX != 0 and !ZF */

+        M.x86.R_IP = ip;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe1

+****************************************************************************/

+static void x86emuOp_loope(u8 X86EMU_UNUSED(op1))

+{

+    s16 ip;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LOOPE\t");

+    ip = (s8) fetch_byte_imm();

+    ip += (s16) M.x86.R_IP;

+    DECODE_PRINTF2("%04x\n", ip);

+    TRACE_AND_STEP();

+    M.x86.R_CX -= 1;

+    if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF))       /* CX != 0 and ZF */

+        M.x86.R_IP = ip;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe2

+****************************************************************************/

+static void x86emuOp_loop(u8 X86EMU_UNUSED(op1))

+{

+    s16 ip;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("LOOP\t");

+    ip = (s8) fetch_byte_imm();

+    ip += (s16) M.x86.R_IP;

+    DECODE_PRINTF2("%04x\n", ip);

+    TRACE_AND_STEP();

+    M.x86.R_CX -= 1;

+    if (M.x86.R_CX != 0)

+        M.x86.R_IP = ip;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe3

+****************************************************************************/

+static void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1))

+{

+    u16 target;

+    s8  offset;

+

+    /* jump to byte offset if overflow flag is set */

+    START_OF_INSTR();

+    DECODE_PRINTF("JCXZ\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    if (M.x86.R_CX == 0)

+        M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe4

+****************************************************************************/

+static void x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 port;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("IN\t");

+	port = (u8) fetch_byte_imm();

+    DECODE_PRINTF2("%x,AL\n", port);

+    TRACE_AND_STEP();

+    M.x86.R_AL = (*sys_inb)(port);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe5

+****************************************************************************/

+static void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u8 port;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("IN\t");

+	port = (u8) fetch_byte_imm();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF2("EAX,%x\n", port);

+    } else {

+        DECODE_PRINTF2("AX,%x\n", port);

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = (*sys_inl)(port);

+    } else {

+        M.x86.R_AX = (*sys_inw)(port);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe6

+****************************************************************************/

+static void x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1))

+{

+    u8 port;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OUT\t");

+	port = (u8) fetch_byte_imm();

+    DECODE_PRINTF2("%x,AL\n", port);

+    TRACE_AND_STEP();

+    (*sys_outb)(port, M.x86.R_AL);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe7

+****************************************************************************/

+static void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1))

+{

+    u8 port;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("OUT\t");

+	port = (u8) fetch_byte_imm();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF2("%x,EAX\n", port);

+    } else {

+        DECODE_PRINTF2("%x,AX\n", port);

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        (*sys_outl)(port, M.x86.R_EAX);

+    } else {

+        (*sys_outw)(port, M.x86.R_AX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe8

+****************************************************************************/

+static void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1))

+{

+    s16 ip;

+

+    START_OF_INSTR();

+	DECODE_PRINTF("CALL\t");

+	ip = (s16) fetch_word_imm();

+	ip += (s16) M.x86.R_IP;    /* CHECK SIGN */

+	DECODE_PRINTF2("%04x\n", (u16)ip);

+	CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, "");

+    TRACE_AND_STEP();

+    push_word(M.x86.R_IP);

+    M.x86.R_IP = ip;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xe9

+****************************************************************************/

+static void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1))

+{

+    int ip;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("JMP\t");

+    ip = (s16)fetch_word_imm();

+    ip += (s16)M.x86.R_IP;

+    DECODE_PRINTF2("%04x\n", (u16)ip);

+    TRACE_AND_STEP();

+    M.x86.R_IP = (u16)ip;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xea

+****************************************************************************/

+static void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 cs, ip;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("JMP\tFAR ");

+    ip = fetch_word_imm();

+    cs = fetch_word_imm();

+    DECODE_PRINTF2("%04x:", cs);

+    DECODE_PRINTF2("%04x\n", ip);

+    TRACE_AND_STEP();

+    M.x86.R_IP = ip;

+    M.x86.R_CS = cs;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xeb

+****************************************************************************/

+static void x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1))

+{

+    u16 target;

+    s8 offset;

+

+    START_OF_INSTR();

+    DECODE_PRINTF("JMP\t");

+    offset = (s8)fetch_byte_imm();

+    target = (u16)(M.x86.R_IP + offset);

+    DECODE_PRINTF2("%x\n", target);

+    TRACE_AND_STEP();

+    M.x86.R_IP = target;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xec

+****************************************************************************/

+static void x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("IN\tAL,DX\n");

+    TRACE_AND_STEP();

+    M.x86.R_AL = (*sys_inb)(M.x86.R_DX);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xed

+****************************************************************************/

+static void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("IN\tEAX,DX\n");

+    } else {

+        DECODE_PRINTF("IN\tAX,DX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        M.x86.R_EAX = (*sys_inl)(M.x86.R_DX);

+    } else {

+        M.x86.R_AX = (*sys_inw)(M.x86.R_DX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xee

+****************************************************************************/

+static void x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("OUT\tDX,AL\n");

+    TRACE_AND_STEP();

+    (*sys_outb)(M.x86.R_DX, M.x86.R_AL);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xef

+****************************************************************************/

+static void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        DECODE_PRINTF("OUT\tDX,EAX\n");

+    } else {

+        DECODE_PRINTF("OUT\tDX,AX\n");

+    }

+    TRACE_AND_STEP();

+    if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+        (*sys_outl)(M.x86.R_DX, M.x86.R_EAX);

+    } else {

+        (*sys_outw)(M.x86.R_DX, M.x86.R_AX);

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf0

+****************************************************************************/

+static void x86emuOp_lock(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("LOCK:\n");

+    TRACE_AND_STEP();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/*opcode 0xf1 ILLEGAL OPERATION */

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf2

+****************************************************************************/

+static void x86emuOp_repne(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("REPNE\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_PREFIX_REPNE;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf3

+****************************************************************************/

+static void x86emuOp_repe(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("REPE\n");

+    TRACE_AND_STEP();

+    M.x86.mode |= SYSMODE_PREFIX_REPE;

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf4

+****************************************************************************/

+static void x86emuOp_halt(u8 X86EMU_UNUSED(op1))

+{

+    START_OF_INSTR();

+    DECODE_PRINTF("HALT\n");

+    TRACE_AND_STEP();

+    HALT_SYS();

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf5

+****************************************************************************/

+static void x86emuOp_cmc(u8 X86EMU_UNUSED(op1))

+{

+    /* complement the carry flag. */

+    START_OF_INSTR();

+    DECODE_PRINTF("CMC\n");

+    TRACE_AND_STEP();

+    TOGGLE_FLAG(F_CF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf6

+****************************************************************************/

+static void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    u8 *destreg;

+    uint destoffset;

+    u8 destval, srcval;

+

+    /* long, drawn out code follows.  Double switch for a total

+       of 32 cases.  */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:                     /* mod=00 */

+        switch (rh) {

+        case 0:         /* test byte imm */

+            DECODE_PRINTF("TEST\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF(",");

+            srcval = fetch_byte_imm();

+            DECODE_PRINTF2("%02x\n", srcval);

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            test_byte(destval, srcval);

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            DECODE_PRINTF("NOT\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = not_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 3:

+            DECODE_PRINTF("NEG\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = neg_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 4:

+            DECODE_PRINTF("MUL\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            mul_byte(destval);

+            break;

+        case 5:

+            DECODE_PRINTF("IMUL\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            imul_byte(destval);

+            break;

+        case 6:

+            DECODE_PRINTF("DIV\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            div_byte(destval);

+            break;

+        case 7:

+            DECODE_PRINTF("IDIV\tBYTE PTR ");

+            destoffset = decode_rm00_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            idiv_byte(destval);

+            break;

+        }

+        break;                  /* end mod==00 */

+    case 1:                     /* mod=01 */

+        switch (rh) {

+        case 0:         /* test byte imm */

+            DECODE_PRINTF("TEST\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF(",");

+            srcval = fetch_byte_imm();

+            DECODE_PRINTF2("%02x\n", srcval);

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            test_byte(destval, srcval);

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            DECODE_PRINTF("NOT\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = not_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 3:

+            DECODE_PRINTF("NEG\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = neg_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 4:

+            DECODE_PRINTF("MUL\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            mul_byte(destval);

+            break;

+        case 5:

+            DECODE_PRINTF("IMUL\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            imul_byte(destval);

+            break;

+        case 6:

+            DECODE_PRINTF("DIV\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            div_byte(destval);

+            break;

+        case 7:

+            DECODE_PRINTF("IDIV\tBYTE PTR ");

+            destoffset = decode_rm01_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            idiv_byte(destval);

+            break;

+        }

+        break;                  /* end mod==01 */

+    case 2:                     /* mod=10 */

+        switch (rh) {

+        case 0:         /* test byte imm */

+            DECODE_PRINTF("TEST\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF(",");

+            srcval = fetch_byte_imm();

+            DECODE_PRINTF2("%02x\n", srcval);

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            test_byte(destval, srcval);

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            DECODE_PRINTF("NOT\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = not_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 3:

+            DECODE_PRINTF("NEG\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = neg_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 4:

+            DECODE_PRINTF("MUL\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            mul_byte(destval);

+            break;

+        case 5:

+            DECODE_PRINTF("IMUL\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            imul_byte(destval);

+            break;

+        case 6:

+            DECODE_PRINTF("DIV\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            div_byte(destval);

+            break;

+        case 7:

+            DECODE_PRINTF("IDIV\tBYTE PTR ");

+            destoffset = decode_rm10_address(rl);

+            DECODE_PRINTF("\n");

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            idiv_byte(destval);

+            break;

+        }

+        break;                  /* end mod==10 */

+    case 3:                     /* mod=11 */

+        switch (rh) {

+        case 0:         /* test byte imm */

+            DECODE_PRINTF("TEST\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF(",");

+            srcval = fetch_byte_imm();

+            DECODE_PRINTF2("%02x\n", srcval);

+            TRACE_AND_STEP();

+            test_byte(*destreg, srcval);

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            DECODE_PRINTF("NOT\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = not_byte(*destreg);

+            break;

+        case 3:

+            DECODE_PRINTF("NEG\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            *destreg = neg_byte(*destreg);

+            break;

+        case 4:

+            DECODE_PRINTF("MUL\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            mul_byte(*destreg);      /*!!!  */

+            break;

+        case 5:

+            DECODE_PRINTF("IMUL\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            imul_byte(*destreg);

+            break;

+        case 6:

+            DECODE_PRINTF("DIV\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            div_byte(*destreg);

+            break;

+        case 7:

+            DECODE_PRINTF("IDIV\t");

+            destreg = DECODE_RM_BYTE_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            idiv_byte(*destreg);

+            break;

+        }

+        break;                  /* end mod==11 */

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf7

+****************************************************************************/

+static void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rl, rh;

+    uint destoffset;

+

+    /* long, drawn out code follows.  Double switch for a total

+       of 32 cases.  */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+    switch (mod) {

+    case 0:                     /* mod=00 */

+        switch (rh) {

+        case 0:         /* test word imm */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval,srcval;

+

+                DECODE_PRINTF("TEST\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_long_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                test_long(destval, srcval);

+            } else {

+                u16 destval,srcval;

+

+                DECODE_PRINTF("TEST\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_word_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                test_word(destval, srcval);

+            }

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n");

+            HALT_SYS();

+            break;

+        case 2:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("NOT\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = not_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("NOT\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = not_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 3:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("NEG\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = neg_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("NEG\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = neg_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 4:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("MUL\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                mul_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("MUL\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                mul_word(destval);

+            }

+            break;

+        case 5:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("IMUL\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                imul_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("IMUL\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                imul_word(destval);

+            }

+            break;

+        case 6:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("DIV\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                div_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("DIV\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                div_word(destval);

+            }

+            break;

+        case 7:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("IDIV\tDWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                idiv_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("IDIV\tWORD PTR ");

+                destoffset = decode_rm00_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                idiv_word(destval);

+            }

+            break;

+        }

+        break;                  /* end mod==00 */

+    case 1:                     /* mod=01 */

+        switch (rh) {

+        case 0:         /* test word imm */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval,srcval;

+

+                DECODE_PRINTF("TEST\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_long_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                test_long(destval, srcval);

+            } else {

+                u16 destval,srcval;

+

+                DECODE_PRINTF("TEST\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_word_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                test_word(destval, srcval);

+            }

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("NOT\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = not_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("NOT\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = not_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 3:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("NEG\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = neg_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("NEG\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = neg_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 4:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("MUL\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                mul_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("MUL\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                mul_word(destval);

+            }

+            break;

+        case 5:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("IMUL\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                imul_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("IMUL\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                imul_word(destval);

+            }

+            break;

+        case 6:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("DIV\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                div_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("DIV\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                div_word(destval);

+            }

+            break;

+        case 7:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("IDIV\tDWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                idiv_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("IDIV\tWORD PTR ");

+                destoffset = decode_rm01_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                idiv_word(destval);

+            }

+            break;

+        }

+        break;                  /* end mod==01 */

+    case 2:                     /* mod=10 */

+        switch (rh) {

+        case 0:         /* test word imm */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval,srcval;

+

+                DECODE_PRINTF("TEST\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_long_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                test_long(destval, srcval);

+            } else {

+                u16 destval,srcval;

+

+                DECODE_PRINTF("TEST\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_word_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                test_word(destval, srcval);

+            }

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("NOT\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = not_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("NOT\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = not_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 3:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("NEG\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = neg_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("NEG\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = neg_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 4:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("MUL\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                mul_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("MUL\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                mul_word(destval);

+            }

+            break;

+        case 5:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("IMUL\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                imul_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("IMUL\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                imul_word(destval);

+            }

+            break;

+        case 6:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("DIV\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                div_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("DIV\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                div_word(destval);

+            }

+            break;

+        case 7:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                DECODE_PRINTF("IDIV\tDWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                idiv_long(destval);

+            } else {

+                u16 destval;

+

+                DECODE_PRINTF("IDIV\tWORD PTR ");

+                destoffset = decode_rm10_address(rl);

+                DECODE_PRINTF("\n");

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                idiv_word(destval);

+            }

+            break;

+        }

+        break;                  /* end mod==10 */

+    case 3:                     /* mod=11 */

+        switch (rh) {

+        case 0:         /* test word imm */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+                u32 srcval;

+

+                DECODE_PRINTF("TEST\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_long_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                TRACE_AND_STEP();

+                test_long(*destreg, srcval);

+            } else {

+                u16 *destreg;

+                u16 srcval;

+

+                DECODE_PRINTF("TEST\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF(",");

+                srcval = fetch_word_imm();

+                DECODE_PRINTF2("%x\n", srcval);

+                TRACE_AND_STEP();

+                test_word(*destreg, srcval);

+            }

+            break;

+        case 1:

+            DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");

+            HALT_SYS();

+            break;

+        case 2:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                DECODE_PRINTF("NOT\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = not_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                DECODE_PRINTF("NOT\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = not_word(*destreg);

+            }

+            break;

+        case 3:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                DECODE_PRINTF("NEG\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = neg_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                DECODE_PRINTF("NEG\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = neg_word(*destreg);

+            }

+            break;

+        case 4:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                DECODE_PRINTF("MUL\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                mul_long(*destreg);      /*!!!  */

+            } else {

+                u16 *destreg;

+

+                DECODE_PRINTF("MUL\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                mul_word(*destreg);      /*!!!  */

+            }

+            break;

+        case 5:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                DECODE_PRINTF("IMUL\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                imul_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                DECODE_PRINTF("IMUL\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                imul_word(*destreg);

+            }

+            break;

+        case 6:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                DECODE_PRINTF("DIV\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                div_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                DECODE_PRINTF("DIV\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                div_word(*destreg);

+            }

+            break;

+        case 7:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                DECODE_PRINTF("IDIV\t");

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                idiv_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                DECODE_PRINTF("IDIV\t");

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                idiv_word(*destreg);

+            }

+            break;

+        }

+        break;                  /* end mod==11 */

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf8

+****************************************************************************/

+static void x86emuOp_clc(u8 X86EMU_UNUSED(op1))

+{

+    /* clear the carry flag. */

+    START_OF_INSTR();

+    DECODE_PRINTF("CLC\n");

+    TRACE_AND_STEP();

+    CLEAR_FLAG(F_CF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xf9

+****************************************************************************/

+static void x86emuOp_stc(u8 X86EMU_UNUSED(op1))

+{

+    /* set the carry flag. */

+    START_OF_INSTR();

+    DECODE_PRINTF("STC\n");

+    TRACE_AND_STEP();

+    SET_FLAG(F_CF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xfa

+****************************************************************************/

+static void x86emuOp_cli(u8 X86EMU_UNUSED(op1))

+{

+    /* clear interrupts. */

+    START_OF_INSTR();

+    DECODE_PRINTF("CLI\n");

+    TRACE_AND_STEP();

+    CLEAR_FLAG(F_IF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xfb

+****************************************************************************/

+static void x86emuOp_sti(u8 X86EMU_UNUSED(op1))

+{

+    /* enable  interrupts. */

+    START_OF_INSTR();

+    DECODE_PRINTF("STI\n");

+    TRACE_AND_STEP();

+    SET_FLAG(F_IF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xfc

+****************************************************************************/

+static void x86emuOp_cld(u8 X86EMU_UNUSED(op1))

+{

+    /* clear interrupts. */

+    START_OF_INSTR();

+    DECODE_PRINTF("CLD\n");

+    TRACE_AND_STEP();

+    CLEAR_FLAG(F_DF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xfd

+****************************************************************************/

+static void x86emuOp_std(u8 X86EMU_UNUSED(op1))

+{

+    /* clear interrupts. */

+    START_OF_INSTR();

+    DECODE_PRINTF("STD\n");

+    TRACE_AND_STEP();

+    SET_FLAG(F_DF);

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xfe

+****************************************************************************/

+static void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rh, rl;

+    u8 destval;

+    uint destoffset;

+    u8 *destreg;

+

+    /* Yet another special case instruction. */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the 

+           above test is done twice. */

+

+        switch (rh) {

+        case 0:

+            DECODE_PRINTF("INC\t");

+            break;

+        case 1:

+            DECODE_PRINTF("DEC\t");

+            break;

+        case 2:

+        case 3:

+        case 4:

+        case 5:

+        case 6:

+        case 7:

+            DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod);

+            HALT_SYS();

+            break;

+        }

+    }

+#endif

+    switch (mod) {

+    case 0:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:         /* inc word ptr ... */

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = inc_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 1:         /* dec word ptr ... */

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = dec_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        }

+        break;

+    case 1:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = inc_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 1:

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = dec_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        }

+        break;

+    case 2:

+        DECODE_PRINTF("BYTE PTR ");

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = inc_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        case 1:

+            destval = fetch_data_byte(destoffset);

+            TRACE_AND_STEP();

+            destval = dec_byte(destval);

+            store_data_byte(destoffset, destval);

+            break;

+        }

+        break;

+    case 3:

+        destreg = DECODE_RM_BYTE_REGISTER(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:

+            TRACE_AND_STEP();

+            *destreg = inc_byte(*destreg);

+            break;

+        case 1:

+            TRACE_AND_STEP();

+            *destreg = dec_byte(*destreg);

+            break;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/****************************************************************************

+REMARKS:

+Handles opcode 0xff

+****************************************************************************/

+static void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1))

+{

+    int mod, rh, rl;

+    uint destoffset = 0;

+	u16 *destreg;

+	u16 destval,destval2;

+

+    /* Yet another special case instruction. */

+    START_OF_INSTR();

+    FETCH_DECODE_MODRM(mod, rh, rl);

+#ifdef DEBUG

+    if (DEBUG_DECODE()) {

+        /* XXX DECODE_PRINTF may be changed to something more

+           general, so that it is important to leave the strings

+           in the same format, even though the result is that the

+           above test is done twice. */

+

+        switch (rh) {

+        case 0:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                DECODE_PRINTF("INC\tDWORD PTR ");

+            } else {

+                DECODE_PRINTF("INC\tWORD PTR ");

+            }

+            break;

+        case 1:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                DECODE_PRINTF("DEC\tDWORD PTR ");

+            } else {

+                DECODE_PRINTF("DEC\tWORD PTR ");

+            }

+            break;

+        case 2:

+            DECODE_PRINTF("CALL\t");

+            break;

+        case 3:

+            DECODE_PRINTF("CALL\tFAR ");

+            break;

+        case 4:

+            DECODE_PRINTF("JMP\t");

+            break;

+        case 5:

+            DECODE_PRINTF("JMP\tFAR ");

+            break;

+        case 6:

+            DECODE_PRINTF("PUSH\t");

+            break;

+        case 7:

+            DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t");

+            HALT_SYS();

+            break;

+        }

+    }

+#endif

+    switch (mod) {

+    case 0:

+        destoffset = decode_rm00_address(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:         /* inc word ptr ... */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = inc_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = inc_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 1:         /* dec word ptr ... */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = dec_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = dec_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 2:         /* call word ptr ... */

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = destval;

+            break;

+        case 3:         /* call far ptr ... */

+            destval = fetch_data_word(destoffset);

+            destval2 = fetch_data_word(destoffset + 2);

+            TRACE_AND_STEP();

+            push_word(M.x86.R_CS);

+            M.x86.R_CS = destval2;

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = destval;

+            break;

+        case 4:         /* jmp word ptr ... */

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            M.x86.R_IP = destval;

+            break;

+        case 5:         /* jmp far ptr ... */

+            destval = fetch_data_word(destoffset);

+            destval2 = fetch_data_word(destoffset + 2);

+            TRACE_AND_STEP();

+            M.x86.R_IP = destval;

+            M.x86.R_CS = destval2;

+            break;

+        case 6:         /*  push word ptr ... */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                push_long(destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                push_word(destval);

+            }

+            break;

+        }

+        break;

+    case 1:

+        destoffset = decode_rm01_address(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = inc_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = inc_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 1:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = dec_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = dec_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 2:         /* call word ptr ... */

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = destval;

+            break;

+        case 3:         /* call far ptr ... */

+            destval = fetch_data_word(destoffset);

+            destval2 = fetch_data_word(destoffset + 2);

+            TRACE_AND_STEP();

+            push_word(M.x86.R_CS);

+            M.x86.R_CS = destval2;

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = destval;

+            break;

+        case 4:         /* jmp word ptr ... */

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            M.x86.R_IP = destval;

+            break;

+        case 5:         /* jmp far ptr ... */

+            destval = fetch_data_word(destoffset);

+            destval2 = fetch_data_word(destoffset + 2);

+            TRACE_AND_STEP();

+            M.x86.R_IP = destval;

+            M.x86.R_CS = destval2;

+            break;

+        case 6:         /*  push word ptr ... */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                push_long(destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                push_word(destval);

+            }

+            break;

+        }

+        break;

+    case 2:

+        destoffset = decode_rm10_address(rl);

+        DECODE_PRINTF("\n");

+        switch (rh) {

+        case 0:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = inc_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = inc_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 1:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                destval = dec_long(destval);

+                store_data_long(destoffset, destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                destval = dec_word(destval);

+                store_data_word(destoffset, destval);

+            }

+            break;

+        case 2:         /* call word ptr ... */

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = destval;

+            break;

+        case 3:         /* call far ptr ... */

+            destval = fetch_data_word(destoffset);

+            destval2 = fetch_data_word(destoffset + 2);

+            TRACE_AND_STEP();

+            push_word(M.x86.R_CS);

+            M.x86.R_CS = destval2;

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = destval;

+            break;

+        case 4:         /* jmp word ptr ... */

+            destval = fetch_data_word(destoffset);

+            TRACE_AND_STEP();

+            M.x86.R_IP = destval;

+            break;

+        case 5:         /* jmp far ptr ... */

+            destval = fetch_data_word(destoffset);

+            destval2 = fetch_data_word(destoffset + 2);

+            TRACE_AND_STEP();

+            M.x86.R_IP = destval;

+            M.x86.R_CS = destval2;

+            break;

+        case 6:         /*  push word ptr ... */

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 destval;

+

+                destval = fetch_data_long(destoffset);

+                TRACE_AND_STEP();

+                push_long(destval);

+            } else {

+                u16 destval;

+

+                destval = fetch_data_word(destoffset);

+                TRACE_AND_STEP();

+                push_word(destval);

+            }

+            break;

+        }

+        break;

+    case 3:

+        switch (rh) {

+        case 0:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = inc_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = inc_word(*destreg);

+            }

+            break;

+        case 1:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = dec_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                *destreg = dec_word(*destreg);

+            }

+            break;

+        case 2:         /* call word ptr ... */

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            push_word(M.x86.R_IP);

+            M.x86.R_IP = *destreg;

+            break;

+        case 3:         /* jmp far ptr ... */

+            DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n");

+            TRACE_AND_STEP();

+            HALT_SYS();

+            break;

+

+        case 4:         /* jmp  ... */

+            destreg = DECODE_RM_WORD_REGISTER(rl);

+            DECODE_PRINTF("\n");

+            TRACE_AND_STEP();

+            M.x86.R_IP = (u16) (*destreg);

+            break;

+        case 5:         /* jmp far ptr ... */

+            DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n");

+            TRACE_AND_STEP();

+            HALT_SYS();

+            break;

+        case 6:

+            if (M.x86.mode & SYSMODE_PREFIX_DATA) {

+                u32 *destreg;

+

+                destreg = DECODE_RM_LONG_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                push_long(*destreg);

+            } else {

+                u16 *destreg;

+

+                destreg = DECODE_RM_WORD_REGISTER(rl);

+                DECODE_PRINTF("\n");

+                TRACE_AND_STEP();

+                push_word(*destreg);

+            }

+            break;

+        }

+        break;

+    }

+    DECODE_CLEAR_SEGOVR();

+    END_OF_INSTR();

+}

+

+/***************************************************************************

+ * Single byte operation code table:

+ **************************************************************************/

+void (*x86emu_optab[256])(u8) =

+{

+/*  0x00 */ x86emuOp_add_byte_RM_R,

+/*  0x01 */ x86emuOp_add_word_RM_R,

+/*  0x02 */ x86emuOp_add_byte_R_RM,

+/*  0x03 */ x86emuOp_add_word_R_RM,

+/*  0x04 */ x86emuOp_add_byte_AL_IMM,

+/*  0x05 */ x86emuOp_add_word_AX_IMM,

+/*  0x06 */ x86emuOp_push_ES,

+/*  0x07 */ x86emuOp_pop_ES,

+

+/*  0x08 */ x86emuOp_or_byte_RM_R,

+/*  0x09 */ x86emuOp_or_word_RM_R,

+/*  0x0a */ x86emuOp_or_byte_R_RM,

+/*  0x0b */ x86emuOp_or_word_R_RM,

+/*  0x0c */ x86emuOp_or_byte_AL_IMM,

+/*  0x0d */ x86emuOp_or_word_AX_IMM,

+/*  0x0e */ x86emuOp_push_CS,

+/*  0x0f */ x86emuOp_two_byte,

+

+/*  0x10 */ x86emuOp_adc_byte_RM_R,

+/*  0x11 */ x86emuOp_adc_word_RM_R,

+/*  0x12 */ x86emuOp_adc_byte_R_RM,

+/*  0x13 */ x86emuOp_adc_word_R_RM,

+/*  0x14 */ x86emuOp_adc_byte_AL_IMM,

+/*  0x15 */ x86emuOp_adc_word_AX_IMM,

+/*  0x16 */ x86emuOp_push_SS,

+/*  0x17 */ x86emuOp_pop_SS,

+

+/*  0x18 */ x86emuOp_sbb_byte_RM_R,

+/*  0x19 */ x86emuOp_sbb_word_RM_R,

+/*  0x1a */ x86emuOp_sbb_byte_R_RM,

+/*  0x1b */ x86emuOp_sbb_word_R_RM,

+/*  0x1c */ x86emuOp_sbb_byte_AL_IMM,

+/*  0x1d */ x86emuOp_sbb_word_AX_IMM,

+/*  0x1e */ x86emuOp_push_DS,

+/*  0x1f */ x86emuOp_pop_DS,

+

+/*  0x20 */ x86emuOp_and_byte_RM_R,

+/*  0x21 */ x86emuOp_and_word_RM_R,

+/*  0x22 */ x86emuOp_and_byte_R_RM,

+/*  0x23 */ x86emuOp_and_word_R_RM,

+/*  0x24 */ x86emuOp_and_byte_AL_IMM,

+/*  0x25 */ x86emuOp_and_word_AX_IMM,

+/*  0x26 */ x86emuOp_segovr_ES,

+/*  0x27 */ x86emuOp_daa,

+

+/*  0x28 */ x86emuOp_sub_byte_RM_R,

+/*  0x29 */ x86emuOp_sub_word_RM_R,

+/*  0x2a */ x86emuOp_sub_byte_R_RM,

+/*  0x2b */ x86emuOp_sub_word_R_RM,

+/*  0x2c */ x86emuOp_sub_byte_AL_IMM,

+/*  0x2d */ x86emuOp_sub_word_AX_IMM,

+/*  0x2e */ x86emuOp_segovr_CS,

+/*  0x2f */ x86emuOp_das,

+

+/*  0x30 */ x86emuOp_xor_byte_RM_R,

+/*  0x31 */ x86emuOp_xor_word_RM_R,

+/*  0x32 */ x86emuOp_xor_byte_R_RM,

+/*  0x33 */ x86emuOp_xor_word_R_RM,

+/*  0x34 */ x86emuOp_xor_byte_AL_IMM,

+/*  0x35 */ x86emuOp_xor_word_AX_IMM,

+/*  0x36 */ x86emuOp_segovr_SS,

+/*  0x37 */ x86emuOp_aaa,

+

+/*  0x38 */ x86emuOp_cmp_byte_RM_R,

+/*  0x39 */ x86emuOp_cmp_word_RM_R,

+/*  0x3a */ x86emuOp_cmp_byte_R_RM,

+/*  0x3b */ x86emuOp_cmp_word_R_RM,

+/*  0x3c */ x86emuOp_cmp_byte_AL_IMM,

+/*  0x3d */ x86emuOp_cmp_word_AX_IMM,

+/*  0x3e */ x86emuOp_segovr_DS,

+/*  0x3f */ x86emuOp_aas,

+

+/*  0x40 */ x86emuOp_inc_AX,

+/*  0x41 */ x86emuOp_inc_CX,

+/*  0x42 */ x86emuOp_inc_DX,

+/*  0x43 */ x86emuOp_inc_BX,

+/*  0x44 */ x86emuOp_inc_SP,

+/*  0x45 */ x86emuOp_inc_BP,

+/*  0x46 */ x86emuOp_inc_SI,

+/*  0x47 */ x86emuOp_inc_DI,

+

+/*  0x48 */ x86emuOp_dec_AX,

+/*  0x49 */ x86emuOp_dec_CX,

+/*  0x4a */ x86emuOp_dec_DX,

+/*  0x4b */ x86emuOp_dec_BX,

+/*  0x4c */ x86emuOp_dec_SP,

+/*  0x4d */ x86emuOp_dec_BP,

+/*  0x4e */ x86emuOp_dec_SI,

+/*  0x4f */ x86emuOp_dec_DI,

+

+/*  0x50 */ x86emuOp_push_AX,

+/*  0x51 */ x86emuOp_push_CX,

+/*  0x52 */ x86emuOp_push_DX,

+/*  0x53 */ x86emuOp_push_BX,

+/*  0x54 */ x86emuOp_push_SP,

+/*  0x55 */ x86emuOp_push_BP,

+/*  0x56 */ x86emuOp_push_SI,

+/*  0x57 */ x86emuOp_push_DI,

+

+/*  0x58 */ x86emuOp_pop_AX,

+/*  0x59 */ x86emuOp_pop_CX,

+/*  0x5a */ x86emuOp_pop_DX,

+/*  0x5b */ x86emuOp_pop_BX,

+/*  0x5c */ x86emuOp_pop_SP,

+/*  0x5d */ x86emuOp_pop_BP,

+/*  0x5e */ x86emuOp_pop_SI,

+/*  0x5f */ x86emuOp_pop_DI,

+

+/*  0x60 */ x86emuOp_push_all,

+/*  0x61 */ x86emuOp_pop_all,

+/*  0x62 */ x86emuOp_illegal_op,   /* bound */

+/*  0x63 */ x86emuOp_illegal_op,   /* arpl */

+/*  0x64 */ x86emuOp_segovr_FS,

+/*  0x65 */ x86emuOp_segovr_GS,

+/*  0x66 */ x86emuOp_prefix_data,

+/*  0x67 */ x86emuOp_prefix_addr,

+

+/*  0x68 */ x86emuOp_push_word_IMM,

+/*  0x69 */ x86emuOp_imul_word_IMM,

+/*  0x6a */ x86emuOp_push_byte_IMM,

+/*  0x6b */ x86emuOp_imul_byte_IMM,

+/*  0x6c */ x86emuOp_ins_byte,

+/*  0x6d */ x86emuOp_ins_word,

+/*  0x6e */ x86emuOp_outs_byte,

+/*  0x6f */ x86emuOp_outs_word,

+

+/*  0x70 */ x86emuOp_jump_near_O,

+/*  0x71 */ x86emuOp_jump_near_NO,

+/*  0x72 */ x86emuOp_jump_near_B,

+/*  0x73 */ x86emuOp_jump_near_NB,

+/*  0x74 */ x86emuOp_jump_near_Z,

+/*  0x75 */ x86emuOp_jump_near_NZ,

+/*  0x76 */ x86emuOp_jump_near_BE,

+/*  0x77 */ x86emuOp_jump_near_NBE,

+

+/*  0x78 */ x86emuOp_jump_near_S,

+/*  0x79 */ x86emuOp_jump_near_NS,

+/*  0x7a */ x86emuOp_jump_near_P,

+/*  0x7b */ x86emuOp_jump_near_NP,

+/*  0x7c */ x86emuOp_jump_near_L,

+/*  0x7d */ x86emuOp_jump_near_NL,

+/*  0x7e */ x86emuOp_jump_near_LE,

+/*  0x7f */ x86emuOp_jump_near_NLE,

+

+/*  0x80 */ x86emuOp_opc80_byte_RM_IMM,

+/*  0x81 */ x86emuOp_opc81_word_RM_IMM,

+/*  0x82 */ x86emuOp_opc82_byte_RM_IMM,

+/*  0x83 */ x86emuOp_opc83_word_RM_IMM,

+/*  0x84 */ x86emuOp_test_byte_RM_R,

+/*  0x85 */ x86emuOp_test_word_RM_R,

+/*  0x86 */ x86emuOp_xchg_byte_RM_R,

+/*  0x87 */ x86emuOp_xchg_word_RM_R,

+

+/*  0x88 */ x86emuOp_mov_byte_RM_R,

+/*  0x89 */ x86emuOp_mov_word_RM_R,

+/*  0x8a */ x86emuOp_mov_byte_R_RM,

+/*  0x8b */ x86emuOp_mov_word_R_RM,

+/*  0x8c */ x86emuOp_mov_word_RM_SR,

+/*  0x8d */ x86emuOp_lea_word_R_M,

+/*  0x8e */ x86emuOp_mov_word_SR_RM,

+/*  0x8f */ x86emuOp_pop_RM,

+

+/*  0x90 */ x86emuOp_nop,

+/*  0x91 */ x86emuOp_xchg_word_AX_CX,

+/*  0x92 */ x86emuOp_xchg_word_AX_DX,

+/*  0x93 */ x86emuOp_xchg_word_AX_BX,

+/*  0x94 */ x86emuOp_xchg_word_AX_SP,

+/*  0x95 */ x86emuOp_xchg_word_AX_BP,

+/*  0x96 */ x86emuOp_xchg_word_AX_SI,

+/*  0x97 */ x86emuOp_xchg_word_AX_DI,

+

+/*  0x98 */ x86emuOp_cbw,

+/*  0x99 */ x86emuOp_cwd,

+/*  0x9a */ x86emuOp_call_far_IMM,

+/*  0x9b */ x86emuOp_wait,

+/*  0x9c */ x86emuOp_pushf_word,

+/*  0x9d */ x86emuOp_popf_word,

+/*  0x9e */ x86emuOp_sahf,

+/*  0x9f */ x86emuOp_lahf,

+

+/*  0xa0 */ x86emuOp_mov_AL_M_IMM,

+/*  0xa1 */ x86emuOp_mov_AX_M_IMM,

+/*  0xa2 */ x86emuOp_mov_M_AL_IMM,

+/*  0xa3 */ x86emuOp_mov_M_AX_IMM,

+/*  0xa4 */ x86emuOp_movs_byte,

+/*  0xa5 */ x86emuOp_movs_word,

+/*  0xa6 */ x86emuOp_cmps_byte,

+/*  0xa7 */ x86emuOp_cmps_word,

+/*  0xa8 */ x86emuOp_test_AL_IMM,

+/*  0xa9 */ x86emuOp_test_AX_IMM,

+/*  0xaa */ x86emuOp_stos_byte,

+/*  0xab */ x86emuOp_stos_word,

+/*  0xac */ x86emuOp_lods_byte,

+/*  0xad */ x86emuOp_lods_word,

+/*  0xac */ x86emuOp_scas_byte,

+/*  0xad */ x86emuOp_scas_word,

+

+

+/*  0xb0 */ x86emuOp_mov_byte_AL_IMM,

+/*  0xb1 */ x86emuOp_mov_byte_CL_IMM,

+/*  0xb2 */ x86emuOp_mov_byte_DL_IMM,

+/*  0xb3 */ x86emuOp_mov_byte_BL_IMM,

+/*  0xb4 */ x86emuOp_mov_byte_AH_IMM,

+/*  0xb5 */ x86emuOp_mov_byte_CH_IMM,

+/*  0xb6 */ x86emuOp_mov_byte_DH_IMM,

+/*  0xb7 */ x86emuOp_mov_byte_BH_IMM,

+

+/*  0xb8 */ x86emuOp_mov_word_AX_IMM,

+/*  0xb9 */ x86emuOp_mov_word_CX_IMM,

+/*  0xba */ x86emuOp_mov_word_DX_IMM,

+/*  0xbb */ x86emuOp_mov_word_BX_IMM,

+/*  0xbc */ x86emuOp_mov_word_SP_IMM,

+/*  0xbd */ x86emuOp_mov_word_BP_IMM,

+/*  0xbe */ x86emuOp_mov_word_SI_IMM,

+/*  0xbf */ x86emuOp_mov_word_DI_IMM,

+

+/*  0xc0 */ x86emuOp_opcC0_byte_RM_MEM,

+/*  0xc1 */ x86emuOp_opcC1_word_RM_MEM,

+/*  0xc2 */ x86emuOp_ret_near_IMM,

+/*  0xc3 */ x86emuOp_ret_near,

+/*  0xc4 */ x86emuOp_les_R_IMM,

+/*  0xc5 */ x86emuOp_lds_R_IMM,

+/*  0xc6 */ x86emuOp_mov_byte_RM_IMM,

+/*  0xc7 */ x86emuOp_mov_word_RM_IMM,

+/*  0xc8 */ x86emuOp_enter,

+/*  0xc9 */ x86emuOp_leave,

+/*  0xca */ x86emuOp_ret_far_IMM,

+/*  0xcb */ x86emuOp_ret_far,

+/*  0xcc */ x86emuOp_int3,

+/*  0xcd */ x86emuOp_int_IMM,

+/*  0xce */ x86emuOp_into,

+/*  0xcf */ x86emuOp_iret,

+

+/*  0xd0 */ x86emuOp_opcD0_byte_RM_1,

+/*  0xd1 */ x86emuOp_opcD1_word_RM_1,

+/*  0xd2 */ x86emuOp_opcD2_byte_RM_CL,

+/*  0xd3 */ x86emuOp_opcD3_word_RM_CL,

+/*  0xd4 */ x86emuOp_aam,

+/*  0xd5 */ x86emuOp_aad,

+/*  0xd6 */ x86emuOp_illegal_op,   /* Undocumented SETALC instruction */

+/*  0xd7 */ x86emuOp_xlat,

+/*  0xd8 */ x86emuOp_esc_coprocess_d8,

+/*  0xd9 */ x86emuOp_esc_coprocess_d9,

+/*  0xda */ x86emuOp_esc_coprocess_da,

+/*  0xdb */ x86emuOp_esc_coprocess_db,

+/*  0xdc */ x86emuOp_esc_coprocess_dc,

+/*  0xdd */ x86emuOp_esc_coprocess_dd,

+/*  0xde */ x86emuOp_esc_coprocess_de,

+/*  0xdf */ x86emuOp_esc_coprocess_df,

+

+/*  0xe0 */ x86emuOp_loopne,

+/*  0xe1 */ x86emuOp_loope,

+/*  0xe2 */ x86emuOp_loop,

+/*  0xe3 */ x86emuOp_jcxz,

+/*  0xe4 */ x86emuOp_in_byte_AL_IMM,

+/*  0xe5 */ x86emuOp_in_word_AX_IMM,

+/*  0xe6 */ x86emuOp_out_byte_IMM_AL,

+/*  0xe7 */ x86emuOp_out_word_IMM_AX,

+

+/*  0xe8 */ x86emuOp_call_near_IMM,

+/*  0xe9 */ x86emuOp_jump_near_IMM,

+/*  0xea */ x86emuOp_jump_far_IMM,

+/*  0xeb */ x86emuOp_jump_byte_IMM,

+/*  0xec */ x86emuOp_in_byte_AL_DX,

+/*  0xed */ x86emuOp_in_word_AX_DX,

+/*  0xee */ x86emuOp_out_byte_DX_AL,

+/*  0xef */ x86emuOp_out_word_DX_AX,

+

+/*  0xf0 */ x86emuOp_lock,

+/*  0xf1 */ x86emuOp_illegal_op,

+/*  0xf2 */ x86emuOp_repne,

+/*  0xf3 */ x86emuOp_repe,

+/*  0xf4 */ x86emuOp_halt,

+/*  0xf5 */ x86emuOp_cmc,

+/*  0xf6 */ x86emuOp_opcF6_byte_RM,

+/*  0xf7 */ x86emuOp_opcF7_word_RM,

+

+/*  0xf8 */ x86emuOp_clc,

+/*  0xf9 */ x86emuOp_stc,

+/*  0xfa */ x86emuOp_cli,

+/*  0xfb */ x86emuOp_sti,

+/*  0xfc */ x86emuOp_cld,

+/*  0xfd */ x86emuOp_std,

+/*  0xfe */ x86emuOp_opcFE_byte_RM,

+/*  0xff */ x86emuOp_opcFF_word_RM,

+};