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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/hw/xfree86/x86emu/ops2.c
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Checked in the following released items:
xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz
Diffstat (limited to 'xorg-server/hw/xfree86/x86emu/ops2.c')
-rw-r--r--xorg-server/hw/xfree86/x86emu/ops2.c2897
1 files changed, 2897 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/x86emu/ops2.c b/xorg-server/hw/xfree86/x86emu/ops2.c
new file mode 100644
index 000000000..a1eda76d7
--- /dev/null
+++ b/xorg-server/hw/xfree86/x86emu/ops2.c
@@ -0,0 +1,2897 @@
+/****************************************************************************
+*
+* 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 extended two-byte processor
+* instructions.
+*
+****************************************************************************/
+
+#include "x86emu/x86emui.h"
+
+#undef bswap_32
+#define bswap_32(x) (((x & 0xff000000) >> 24) | \
+ ((x & 0x00ff0000) >> 8) | \
+ ((x & 0x0000ff00) << 8) | \
+ ((x & 0x000000ff) << 24))
+
+/*----------------------------- Implementation ----------------------------*/
+
+/****************************************************************************
+PARAMETERS:
+op1 - Instruction op code
+
+REMARKS:
+Handles illegal opcodes.
+****************************************************************************/
+static void x86emuOp2_illegal_op(
+ u8 op2)
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
+ TRACE_REGS();
+ printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n",
+ M.x86.R_CS, M.x86.R_IP-2,op2);
+ HALT_SYS();
+ END_OF_INSTR();
+}
+
+#define xorl(a,b) ((a) && !(b)) || (!(a) && (b))
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0x31
+****************************************************************************/
+static void x86emuOp2_rdtsc(u8 X86EMU_UNUSED(op2))
+{
+#ifdef __HAS_LONG_LONG__
+ static u64 counter = 0;
+#else
+ static u32 counter = 0;
+#endif
+
+ counter += 0x10000;
+
+ /* read timestamp counter */
+ /*
+ * Note that instead of actually trying to accurately measure this, we just
+ * increase the counter by a fixed amount every time we hit one of these
+ * instructions. Feel free to come up with a better method.
+ */
+ START_OF_INSTR();
+ DECODE_PRINTF("RDTSC\n");
+ TRACE_AND_STEP();
+#ifdef __HAS_LONG_LONG__
+ M.x86.R_EAX = counter & 0xffffffff;
+ M.x86.R_EDX = counter >> 32;
+#else
+ M.x86.R_EAX = counter;
+ M.x86.R_EDX = 0;
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0x80-0x8F
+****************************************************************************/
+static void x86emuOp2_long_jump(u8 op2)
+{
+ s32 target;
+ char *name = 0;
+ int cond = 0;
+
+ /* conditional jump to word offset. */
+ START_OF_INSTR();
+ switch (op2) {
+ case 0x80:
+ name = "JO\t";
+ cond = ACCESS_FLAG(F_OF);
+ break;
+ case 0x81:
+ name = "JNO\t";
+ cond = !ACCESS_FLAG(F_OF);
+ break;
+ case 0x82:
+ name = "JB\t";
+ cond = ACCESS_FLAG(F_CF);
+ break;
+ case 0x83:
+ name = "JNB\t";
+ cond = !ACCESS_FLAG(F_CF);
+ break;
+ case 0x84:
+ name = "JZ\t";
+ cond = ACCESS_FLAG(F_ZF);
+ break;
+ case 0x85:
+ name = "JNZ\t";
+ cond = !ACCESS_FLAG(F_ZF);
+ break;
+ case 0x86:
+ name = "JBE\t";
+ cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
+ break;
+ case 0x87:
+ name = "JNBE\t";
+ cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
+ break;
+ case 0x88:
+ name = "JS\t";
+ cond = ACCESS_FLAG(F_SF);
+ break;
+ case 0x89:
+ name = "JNS\t";
+ cond = !ACCESS_FLAG(F_SF);
+ break;
+ case 0x8a:
+ name = "JP\t";
+ cond = ACCESS_FLAG(F_PF);
+ break;
+ case 0x8b:
+ name = "JNP\t";
+ cond = !ACCESS_FLAG(F_PF);
+ break;
+ case 0x8c:
+ name = "JL\t";
+ cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0x8d:
+ name = "JNL\t";
+ cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)));
+ break;
+ case 0x8e:
+ name = "JLE\t";
+ cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ case 0x8f:
+ name = "JNLE\t";
+ cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ }
+ DECODE_PRINTF(name);
+ (void)name;
+ target = (s16) fetch_word_imm();
+ target += (s16) M.x86.R_IP;
+ DECODE_PRINTF2("%04x\n", target);
+ TRACE_AND_STEP();
+ if (cond)
+ M.x86.R_IP = (u16)target;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0x90-0x9F
+****************************************************************************/
+static void x86emuOp2_set_byte(u8 op2)
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 *destreg;
+ char *name = 0;
+ int cond = 0;
+
+ START_OF_INSTR();
+ switch (op2) {
+ case 0x90:
+ name = "SETO\t";
+ cond = ACCESS_FLAG(F_OF);
+ break;
+ case 0x91:
+ name = "SETNO\t";
+ cond = !ACCESS_FLAG(F_OF);
+ break;
+ case 0x92:
+ name = "SETB\t";
+ cond = ACCESS_FLAG(F_CF);
+ break;
+ case 0x93:
+ name = "SETNB\t";
+ cond = !ACCESS_FLAG(F_CF);
+ break;
+ case 0x94:
+ name = "SETZ\t";
+ cond = ACCESS_FLAG(F_ZF);
+ break;
+ case 0x95:
+ name = "SETNZ\t";
+ cond = !ACCESS_FLAG(F_ZF);
+ break;
+ case 0x96:
+ name = "SETBE\t";
+ cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
+ break;
+ case 0x97:
+ name = "SETNBE\t";
+ cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
+ break;
+ case 0x98:
+ name = "SETS\t";
+ cond = ACCESS_FLAG(F_SF);
+ break;
+ case 0x99:
+ name = "SETNS\t";
+ cond = !ACCESS_FLAG(F_SF);
+ break;
+ case 0x9a:
+ name = "SETP\t";
+ cond = ACCESS_FLAG(F_PF);
+ break;
+ case 0x9b:
+ name = "SETNP\t";
+ cond = !ACCESS_FLAG(F_PF);
+ break;
+ case 0x9c:
+ name = "SETL\t";
+ cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0x9d:
+ name = "SETNL\t";
+ cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0x9e:
+ name = "SETLE\t";
+ cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ case 0x9f:
+ name = "SETNLE\t";
+ cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ }
+ DECODE_PRINTF(name);
+ (void)name;
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ TRACE_AND_STEP();
+ store_data_byte(destoffset, cond ? 0x01 : 0x00);
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ TRACE_AND_STEP();
+ store_data_byte(destoffset, cond ? 0x01 : 0x00);
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ TRACE_AND_STEP();
+ store_data_byte(destoffset, cond ? 0x01 : 0x00);
+ break;
+ case 3: /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ TRACE_AND_STEP();
+ *destreg = cond ? 0x01 : 0x00;
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa0
+****************************************************************************/
+static void x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tFS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_FS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa1
+****************************************************************************/
+static void x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tFS\n");
+ TRACE_AND_STEP();
+ M.x86.R_FS = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS: CPUID takes EAX/ECX as inputs, writes EAX/EBX/ECX/EDX as output
+Handles opcode 0x0f,0xa2
+****************************************************************************/
+static void x86emuOp2_cpuid(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("CPUID\n");
+ TRACE_AND_STEP();
+ cpuid();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa3
+****************************************************************************/
+static void x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BT\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ } else {
+ u16 srcval;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ } else {
+ u16 srcval;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ } else {
+ u16 srcval;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF);
+ } else {
+ u16 *srcreg,*shiftreg;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF);
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa4
+****************************************************************************/
+static void x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 shift;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shld_long(*destreg,*shiftreg,shift);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shld_word(*destreg,*shiftreg,shift);
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa5
+****************************************************************************/
+static void x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL);
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa8
+****************************************************************************/
+static void x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tGS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_GS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa9
+****************************************************************************/
+static void x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tGS\n");
+ TRACE_AND_STEP();
+ M.x86.R_GS = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xab
+****************************************************************************/
+static void x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BTS\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval | mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, srcval | mask);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval | mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, srcval | mask);
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval | mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, srcval | mask);
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg |= mask;
+ } else {
+ u16 *srcreg,*shiftreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg |= mask;
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xac
+****************************************************************************/
+static void x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 shift;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shrd_long(*destreg,*shiftreg,shift);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shrd_word(*destreg,*shiftreg,shift);
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xad
+****************************************************************************/
+static void x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL);
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xaf
+****************************************************************************/
+static void x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ 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;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rm00_address(rl);
+ srcval = fetch_data_long(srcoffset);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval);
+ 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);
+ TRACE_AND_STEP();
+ res = (s16)*destreg * (s16)srcval;
+ 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);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval);
+ 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);
+ TRACE_AND_STEP();
+ res = (s16)*destreg * (s16)srcval;
+ 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);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval);
+ 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);
+ TRACE_AND_STEP();
+ res = (s16)*destreg * (s16)srcval;
+ 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);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg);
+ 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);
+ res = (s16)*destreg * (s16)*srcreg;
+ 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 0x0f,0xb2
+****************************************************************************/
+static void x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LSS\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_SS = 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_SS = 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_SS = fetch_data_word(srcoffset + 2);
+ break;
+ case 3: /* register to register */
+ /* UNDEFINED! */
+ TRACE_AND_STEP();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb3
+****************************************************************************/
+static void x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BTR\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval & ~mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval & ~mask));
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval & ~mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval & ~mask));
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval & ~mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval & ~mask));
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg &= ~mask;
+ } else {
+ u16 *srcreg,*shiftreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg &= ~mask;
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb4
+****************************************************************************/
+static void x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LFS\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_FS = 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_FS = 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_FS = fetch_data_word(srcoffset + 2);
+ break;
+ case 3: /* register to register */
+ /* UNDEFINED! */
+ TRACE_AND_STEP();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb5
+****************************************************************************/
+static void x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LGS\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_GS = 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_GS = 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_GS = fetch_data_word(srcoffset + 2);
+ break;
+ case 3: /* register to register */
+ /* UNDEFINED! */
+ TRACE_AND_STEP();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb6
+****************************************************************************/
+static void x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVZX\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_byte(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_byte(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_byte(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_byte(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_byte(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_byte(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ } else {
+ u16 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_WORD_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 0x0f,0xb7
+****************************************************************************/
+static void x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ u32 *destreg;
+ u32 srcval;
+ u16 *srcreg;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVZX\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destreg = DECODE_RM_LONG_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_LONG_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_LONG_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_LONG_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 0x0f,0xba
+****************************************************************************/
+static void x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (rh) {
+ case 4:
+ DECODE_PRINTF("BT\t");
+ break;
+ case 5:
+ DECODE_PRINTF("BTS\t");
+ break;
+ case 6:
+ DECODE_PRINTF("BTR\t");
+ break;
+ case 7:
+ DECODE_PRINTF("BTC\t");
+ break;
+ default:
+ DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
+ TRACE_REGS();
+ printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n",
+ M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl);
+ HALT_SYS();
+ }
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, mask;
+ u8 shift;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0x1F;
+ srcval = fetch_data_long(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_long(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_long(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_long(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ } else {
+ u16 srcval, mask;
+ u8 shift;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0xF;
+ srcval = fetch_data_word(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_word(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_word(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_word(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, mask;
+ u8 shift;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0x1F;
+ srcval = fetch_data_long(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_long(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_long(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_long(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ } else {
+ u16 srcval, mask;
+ u8 shift;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0xF;
+ srcval = fetch_data_word(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_word(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_word(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_word(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, mask;
+ u8 shift;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0x1F;
+ srcval = fetch_data_long(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_long(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_long(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_long(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ } else {
+ u16 srcval, mask;
+ u8 shift;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0xF;
+ srcval = fetch_data_word(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_word(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_word(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_word(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg;
+ u32 mask;
+ u8 shift;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ switch (rh) {
+ case 5:
+ *srcreg |= mask;
+ break;
+ case 6:
+ *srcreg &= ~mask;
+ break;
+ case 7:
+ *srcreg ^= mask;
+ break;
+ default:
+ break;
+ }
+ } else {
+ u16 *srcreg;
+ u16 mask;
+ u8 shift;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ TRACE_AND_STEP();
+ bit = shift & 0xF;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ switch (rh) {
+ case 5:
+ *srcreg |= mask;
+ break;
+ case 6:
+ *srcreg &= ~mask;
+ break;
+ case 7:
+ *srcreg ^= mask;
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbb
+****************************************************************************/
+static void x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BTC\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval ^ mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval ^ mask));
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval ^ mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval ^ mask));
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval ^ mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval ^ mask));
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg ^= mask;
+ } else {
+ u16 *srcreg,*shiftreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg ^= mask;
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbc
+****************************************************************************/
+static void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BSF\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch(mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcval = *DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcval = *DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbd
+****************************************************************************/
+static void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BSR\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch(mod) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcoffset = decode_rm00_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcoffset = decode_rm01_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ case 2:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcoffset = decode_rm10_address(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ srcval = *DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ srcval = *DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbe
+****************************************************************************/
+static void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVSX\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 = (s32)((s8)fetch_data_byte(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 = (s16)((s8)fetch_data_byte(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 = (s32)((s8)fetch_data_byte(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 = (s16)((s8)fetch_data_byte(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 = (s32)((s8)fetch_data_byte(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 = (s16)((s8)fetch_data_byte(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ }
+ break;
+ case 3: /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = (s32)((s8)*srcreg);
+ } else {
+ u16 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = (s16)((s8)*srcreg);
+ }
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbf
+****************************************************************************/
+static void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ u32 *destreg;
+ u32 srcval;
+ u16 *srcreg;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVSX\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rm00_address(rl);
+ srcval = (s32)((s16)fetch_data_word(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ break;
+ case 1:
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rm01_address(rl);
+ srcval = (s32)((s16)fetch_data_word(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ break;
+ case 2:
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rm10_address(rl);
+ srcval = (s32)((s16)fetch_data_word(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ break;
+ case 3: /* register to register */
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = (s32)((s16)*srcreg);
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/* Handles opcodes 0xc8-0xcf */
+static void x86emuOp2_bswap(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("BSWAP\n");
+ TRACE_AND_STEP();
+
+ switch (op2) {
+ case 0xc8:
+ M.x86.R_EAX = bswap_32(M.x86.R_EAX);
+ break;
+ case 0xc9:
+ M.x86.R_ECX = bswap_32(M.x86.R_ECX);
+ break;
+ case 0xca:
+ M.x86.R_EDX = bswap_32(M.x86.R_EDX);
+ break;
+ case 0xcb:
+ M.x86.R_EBX = bswap_32(M.x86.R_EBX);
+ break;
+ case 0xcc:
+ M.x86.R_ESP = bswap_32(M.x86.R_ESP);
+ break;
+ case 0xcd:
+ M.x86.R_EBP = bswap_32(M.x86.R_EBP);
+ break;
+ case 0xce:
+ M.x86.R_ESI = bswap_32(M.x86.R_ESI);
+ break;
+ case 0xcf:
+ M.x86.R_EDI = bswap_32(M.x86.R_EDI);
+ break;
+ default:
+ /* can't happen */
+ break;
+ }
+
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/***************************************************************************
+ * Double byte operation code table:
+ **************************************************************************/
+void (*x86emu_optab2[256])(u8) =
+{
+/* 0x00 */ x86emuOp2_illegal_op, /* Group F (ring 0 PM) */
+/* 0x01 */ x86emuOp2_illegal_op, /* Group G (ring 0 PM) */
+/* 0x02 */ x86emuOp2_illegal_op, /* lar (ring 0 PM) */
+/* 0x03 */ x86emuOp2_illegal_op, /* lsl (ring 0 PM) */
+/* 0x04 */ x86emuOp2_illegal_op,
+/* 0x05 */ x86emuOp2_illegal_op, /* loadall (undocumented) */
+/* 0x06 */ x86emuOp2_illegal_op, /* clts (ring 0 PM) */
+/* 0x07 */ x86emuOp2_illegal_op, /* loadall (undocumented) */
+/* 0x08 */ x86emuOp2_illegal_op, /* invd (ring 0 PM) */
+/* 0x09 */ x86emuOp2_illegal_op, /* wbinvd (ring 0 PM) */
+/* 0x0a */ x86emuOp2_illegal_op,
+/* 0x0b */ x86emuOp2_illegal_op,
+/* 0x0c */ x86emuOp2_illegal_op,
+/* 0x0d */ x86emuOp2_illegal_op,
+/* 0x0e */ x86emuOp2_illegal_op,
+/* 0x0f */ x86emuOp2_illegal_op,
+
+/* 0x10 */ x86emuOp2_illegal_op,
+/* 0x11 */ x86emuOp2_illegal_op,
+/* 0x12 */ x86emuOp2_illegal_op,
+/* 0x13 */ x86emuOp2_illegal_op,
+/* 0x14 */ x86emuOp2_illegal_op,
+/* 0x15 */ x86emuOp2_illegal_op,
+/* 0x16 */ x86emuOp2_illegal_op,
+/* 0x17 */ x86emuOp2_illegal_op,
+/* 0x18 */ x86emuOp2_illegal_op,
+/* 0x19 */ x86emuOp2_illegal_op,
+/* 0x1a */ x86emuOp2_illegal_op,
+/* 0x1b */ x86emuOp2_illegal_op,
+/* 0x1c */ x86emuOp2_illegal_op,
+/* 0x1d */ x86emuOp2_illegal_op,
+/* 0x1e */ x86emuOp2_illegal_op,
+/* 0x1f */ x86emuOp2_illegal_op,
+
+/* 0x20 */ x86emuOp2_illegal_op, /* mov reg32,creg (ring 0 PM) */
+/* 0x21 */ x86emuOp2_illegal_op, /* mov reg32,dreg (ring 0 PM) */
+/* 0x22 */ x86emuOp2_illegal_op, /* mov creg,reg32 (ring 0 PM) */
+/* 0x23 */ x86emuOp2_illegal_op, /* mov dreg,reg32 (ring 0 PM) */
+/* 0x24 */ x86emuOp2_illegal_op, /* mov reg32,treg (ring 0 PM) */
+/* 0x25 */ x86emuOp2_illegal_op,
+/* 0x26 */ x86emuOp2_illegal_op, /* mov treg,reg32 (ring 0 PM) */
+/* 0x27 */ x86emuOp2_illegal_op,
+/* 0x28 */ x86emuOp2_illegal_op,
+/* 0x29 */ x86emuOp2_illegal_op,
+/* 0x2a */ x86emuOp2_illegal_op,
+/* 0x2b */ x86emuOp2_illegal_op,
+/* 0x2c */ x86emuOp2_illegal_op,
+/* 0x2d */ x86emuOp2_illegal_op,
+/* 0x2e */ x86emuOp2_illegal_op,
+/* 0x2f */ x86emuOp2_illegal_op,
+
+/* 0x30 */ x86emuOp2_illegal_op,
+/* 0x31 */ x86emuOp2_rdtsc,
+/* 0x32 */ x86emuOp2_illegal_op,
+/* 0x33 */ x86emuOp2_illegal_op,
+/* 0x34 */ x86emuOp2_illegal_op,
+/* 0x35 */ x86emuOp2_illegal_op,
+/* 0x36 */ x86emuOp2_illegal_op,
+/* 0x37 */ x86emuOp2_illegal_op,
+/* 0x38 */ x86emuOp2_illegal_op,
+/* 0x39 */ x86emuOp2_illegal_op,
+/* 0x3a */ x86emuOp2_illegal_op,
+/* 0x3b */ x86emuOp2_illegal_op,
+/* 0x3c */ x86emuOp2_illegal_op,
+/* 0x3d */ x86emuOp2_illegal_op,
+/* 0x3e */ x86emuOp2_illegal_op,
+/* 0x3f */ x86emuOp2_illegal_op,
+
+/* 0x40 */ x86emuOp2_illegal_op,
+/* 0x41 */ x86emuOp2_illegal_op,
+/* 0x42 */ x86emuOp2_illegal_op,
+/* 0x43 */ x86emuOp2_illegal_op,
+/* 0x44 */ x86emuOp2_illegal_op,
+/* 0x45 */ x86emuOp2_illegal_op,
+/* 0x46 */ x86emuOp2_illegal_op,
+/* 0x47 */ x86emuOp2_illegal_op,
+/* 0x48 */ x86emuOp2_illegal_op,
+/* 0x49 */ x86emuOp2_illegal_op,
+/* 0x4a */ x86emuOp2_illegal_op,
+/* 0x4b */ x86emuOp2_illegal_op,
+/* 0x4c */ x86emuOp2_illegal_op,
+/* 0x4d */ x86emuOp2_illegal_op,
+/* 0x4e */ x86emuOp2_illegal_op,
+/* 0x4f */ x86emuOp2_illegal_op,
+
+/* 0x50 */ x86emuOp2_illegal_op,
+/* 0x51 */ x86emuOp2_illegal_op,
+/* 0x52 */ x86emuOp2_illegal_op,
+/* 0x53 */ x86emuOp2_illegal_op,
+/* 0x54 */ x86emuOp2_illegal_op,
+/* 0x55 */ x86emuOp2_illegal_op,
+/* 0x56 */ x86emuOp2_illegal_op,
+/* 0x57 */ x86emuOp2_illegal_op,
+/* 0x58 */ x86emuOp2_illegal_op,
+/* 0x59 */ x86emuOp2_illegal_op,
+/* 0x5a */ x86emuOp2_illegal_op,
+/* 0x5b */ x86emuOp2_illegal_op,
+/* 0x5c */ x86emuOp2_illegal_op,
+/* 0x5d */ x86emuOp2_illegal_op,
+/* 0x5e */ x86emuOp2_illegal_op,
+/* 0x5f */ x86emuOp2_illegal_op,
+
+/* 0x60 */ x86emuOp2_illegal_op,
+/* 0x61 */ x86emuOp2_illegal_op,
+/* 0x62 */ x86emuOp2_illegal_op,
+/* 0x63 */ x86emuOp2_illegal_op,
+/* 0x64 */ x86emuOp2_illegal_op,
+/* 0x65 */ x86emuOp2_illegal_op,
+/* 0x66 */ x86emuOp2_illegal_op,
+/* 0x67 */ x86emuOp2_illegal_op,
+/* 0x68 */ x86emuOp2_illegal_op,
+/* 0x69 */ x86emuOp2_illegal_op,
+/* 0x6a */ x86emuOp2_illegal_op,
+/* 0x6b */ x86emuOp2_illegal_op,
+/* 0x6c */ x86emuOp2_illegal_op,
+/* 0x6d */ x86emuOp2_illegal_op,
+/* 0x6e */ x86emuOp2_illegal_op,
+/* 0x6f */ x86emuOp2_illegal_op,
+
+/* 0x70 */ x86emuOp2_illegal_op,
+/* 0x71 */ x86emuOp2_illegal_op,
+/* 0x72 */ x86emuOp2_illegal_op,
+/* 0x73 */ x86emuOp2_illegal_op,
+/* 0x74 */ x86emuOp2_illegal_op,
+/* 0x75 */ x86emuOp2_illegal_op,
+/* 0x76 */ x86emuOp2_illegal_op,
+/* 0x77 */ x86emuOp2_illegal_op,
+/* 0x78 */ x86emuOp2_illegal_op,
+/* 0x79 */ x86emuOp2_illegal_op,
+/* 0x7a */ x86emuOp2_illegal_op,
+/* 0x7b */ x86emuOp2_illegal_op,
+/* 0x7c */ x86emuOp2_illegal_op,
+/* 0x7d */ x86emuOp2_illegal_op,
+/* 0x7e */ x86emuOp2_illegal_op,
+/* 0x7f */ x86emuOp2_illegal_op,
+
+/* 0x80 */ x86emuOp2_long_jump,
+/* 0x81 */ x86emuOp2_long_jump,
+/* 0x82 */ x86emuOp2_long_jump,
+/* 0x83 */ x86emuOp2_long_jump,
+/* 0x84 */ x86emuOp2_long_jump,
+/* 0x85 */ x86emuOp2_long_jump,
+/* 0x86 */ x86emuOp2_long_jump,
+/* 0x87 */ x86emuOp2_long_jump,
+/* 0x88 */ x86emuOp2_long_jump,
+/* 0x89 */ x86emuOp2_long_jump,
+/* 0x8a */ x86emuOp2_long_jump,
+/* 0x8b */ x86emuOp2_long_jump,
+/* 0x8c */ x86emuOp2_long_jump,
+/* 0x8d */ x86emuOp2_long_jump,
+/* 0x8e */ x86emuOp2_long_jump,
+/* 0x8f */ x86emuOp2_long_jump,
+
+/* 0x90 */ x86emuOp2_set_byte,
+/* 0x91 */ x86emuOp2_set_byte,
+/* 0x92 */ x86emuOp2_set_byte,
+/* 0x93 */ x86emuOp2_set_byte,
+/* 0x94 */ x86emuOp2_set_byte,
+/* 0x95 */ x86emuOp2_set_byte,
+/* 0x96 */ x86emuOp2_set_byte,
+/* 0x97 */ x86emuOp2_set_byte,
+/* 0x98 */ x86emuOp2_set_byte,
+/* 0x99 */ x86emuOp2_set_byte,
+/* 0x9a */ x86emuOp2_set_byte,
+/* 0x9b */ x86emuOp2_set_byte,
+/* 0x9c */ x86emuOp2_set_byte,
+/* 0x9d */ x86emuOp2_set_byte,
+/* 0x9e */ x86emuOp2_set_byte,
+/* 0x9f */ x86emuOp2_set_byte,
+
+/* 0xa0 */ x86emuOp2_push_FS,
+/* 0xa1 */ x86emuOp2_pop_FS,
+/* 0xa2 */ x86emuOp2_cpuid,
+/* 0xa3 */ x86emuOp2_bt_R,
+/* 0xa4 */ x86emuOp2_shld_IMM,
+/* 0xa5 */ x86emuOp2_shld_CL,
+/* 0xa6 */ x86emuOp2_illegal_op,
+/* 0xa7 */ x86emuOp2_illegal_op,
+/* 0xa8 */ x86emuOp2_push_GS,
+/* 0xa9 */ x86emuOp2_pop_GS,
+/* 0xaa */ x86emuOp2_illegal_op,
+/* 0xab */ x86emuOp2_bts_R,
+/* 0xac */ x86emuOp2_shrd_IMM,
+/* 0xad */ x86emuOp2_shrd_CL,
+/* 0xae */ x86emuOp2_illegal_op,
+/* 0xaf */ x86emuOp2_imul_R_RM,
+
+/* 0xb0 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */
+/* 0xb1 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */
+/* 0xb2 */ x86emuOp2_lss_R_IMM,
+/* 0xb3 */ x86emuOp2_btr_R,
+/* 0xb4 */ x86emuOp2_lfs_R_IMM,
+/* 0xb5 */ x86emuOp2_lgs_R_IMM,
+/* 0xb6 */ x86emuOp2_movzx_byte_R_RM,
+/* 0xb7 */ x86emuOp2_movzx_word_R_RM,
+/* 0xb8 */ x86emuOp2_illegal_op,
+/* 0xb9 */ x86emuOp2_illegal_op,
+/* 0xba */ x86emuOp2_btX_I,
+/* 0xbb */ x86emuOp2_btc_R,
+/* 0xbc */ x86emuOp2_bsf,
+/* 0xbd */ x86emuOp2_bsr,
+/* 0xbe */ x86emuOp2_movsx_byte_R_RM,
+/* 0xbf */ x86emuOp2_movsx_word_R_RM,
+
+/* 0xc0 */ x86emuOp2_illegal_op, /* TODO: xadd */
+/* 0xc1 */ x86emuOp2_illegal_op, /* TODO: xadd */
+/* 0xc2 */ x86emuOp2_illegal_op,
+/* 0xc3 */ x86emuOp2_illegal_op,
+/* 0xc4 */ x86emuOp2_illegal_op,
+/* 0xc5 */ x86emuOp2_illegal_op,
+/* 0xc6 */ x86emuOp2_illegal_op,
+/* 0xc7 */ x86emuOp2_illegal_op,
+/* 0xc8 */ x86emuOp2_bswap,
+/* 0xc9 */ x86emuOp2_bswap,
+/* 0xca */ x86emuOp2_bswap,
+/* 0xcb */ x86emuOp2_bswap,
+/* 0xcc */ x86emuOp2_bswap,
+/* 0xcd */ x86emuOp2_bswap,
+/* 0xce */ x86emuOp2_bswap,
+/* 0xcf */ x86emuOp2_bswap,
+
+/* 0xd0 */ x86emuOp2_illegal_op,
+/* 0xd1 */ x86emuOp2_illegal_op,
+/* 0xd2 */ x86emuOp2_illegal_op,
+/* 0xd3 */ x86emuOp2_illegal_op,
+/* 0xd4 */ x86emuOp2_illegal_op,
+/* 0xd5 */ x86emuOp2_illegal_op,
+/* 0xd6 */ x86emuOp2_illegal_op,
+/* 0xd7 */ x86emuOp2_illegal_op,
+/* 0xd8 */ x86emuOp2_illegal_op,
+/* 0xd9 */ x86emuOp2_illegal_op,
+/* 0xda */ x86emuOp2_illegal_op,
+/* 0xdb */ x86emuOp2_illegal_op,
+/* 0xdc */ x86emuOp2_illegal_op,
+/* 0xdd */ x86emuOp2_illegal_op,
+/* 0xde */ x86emuOp2_illegal_op,
+/* 0xdf */ x86emuOp2_illegal_op,
+
+/* 0xe0 */ x86emuOp2_illegal_op,
+/* 0xe1 */ x86emuOp2_illegal_op,
+/* 0xe2 */ x86emuOp2_illegal_op,
+/* 0xe3 */ x86emuOp2_illegal_op,
+/* 0xe4 */ x86emuOp2_illegal_op,
+/* 0xe5 */ x86emuOp2_illegal_op,
+/* 0xe6 */ x86emuOp2_illegal_op,
+/* 0xe7 */ x86emuOp2_illegal_op,
+/* 0xe8 */ x86emuOp2_illegal_op,
+/* 0xe9 */ x86emuOp2_illegal_op,
+/* 0xea */ x86emuOp2_illegal_op,
+/* 0xeb */ x86emuOp2_illegal_op,
+/* 0xec */ x86emuOp2_illegal_op,
+/* 0xed */ x86emuOp2_illegal_op,
+/* 0xee */ x86emuOp2_illegal_op,
+/* 0xef */ x86emuOp2_illegal_op,
+
+/* 0xf0 */ x86emuOp2_illegal_op,
+/* 0xf1 */ x86emuOp2_illegal_op,
+/* 0xf2 */ x86emuOp2_illegal_op,
+/* 0xf3 */ x86emuOp2_illegal_op,
+/* 0xf4 */ x86emuOp2_illegal_op,
+/* 0xf5 */ x86emuOp2_illegal_op,
+/* 0xf6 */ x86emuOp2_illegal_op,
+/* 0xf7 */ x86emuOp2_illegal_op,
+/* 0xf8 */ x86emuOp2_illegal_op,
+/* 0xf9 */ x86emuOp2_illegal_op,
+/* 0xfa */ x86emuOp2_illegal_op,
+/* 0xfb */ x86emuOp2_illegal_op,
+/* 0xfc */ x86emuOp2_illegal_op,
+/* 0xfd */ x86emuOp2_illegal_op,
+/* 0xfe */ x86emuOp2_illegal_op,
+/* 0xff */ x86emuOp2_illegal_op,
+};