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/* $XConsortium: inout.s /main/6 1996/02/21 17:53:35 kaleb $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/inout.S,v 1.1 1999/07/10 07:24:52 dawes Exp $ */
#include "assyntax.h"
/*
* Make i80386 io primitives available at C-level.
*/
FILE("inout.s")
AS_BEGIN
SEG_TEXT
/*
*-----------------------------------------------------------------------
* inb ---
* Input one byte.
*
* Results:
* Byte in al.
*-----------------------------------------------------------------------
*/
GLOBL GLNAME(inb)
GLNAME(inb):
MOV_L (REGOFF(4,ESP),EDX)
SUB_L (EAX,EAX)
IN_B
RET
/*
*-----------------------------------------------------------------------
* outb ---
* Output one byte.
*
* Results:
* None.
*-----------------------------------------------------------------------
*/
GLOBL GLNAME(outb)
GLNAME(outb):
MOV_L (REGOFF(4,sp),EDX)
MOV_L (REGOFF(8,sp),EAX)
OUT_B
RET
/*
*-----------------------------------------------------------------------
* inw ---
* Input one 16-bit word.
*
* Results:
* Word in ax.
*-----------------------------------------------------------------------
*/
GLOBL GLNAME(inw)
GLNAME(inw):
MOV_L (REGOFF(4,ESP),EDX)
IN_W
RET
/*
*-----------------------------------------------------------------------
* outw ---
* Output one 16-bit word.
*
* Results:
* None.
*-----------------------------------------------------------------------
*/
GLOBL GLNAME(outw)
GLNAME(outw):
MOV_L (REGOFF(4,ESP),EDX)
MOV_L (REGOFF(8,ESP),EAX)
OUT_W
RET
/*
*-----------------------------------------------------------------------
* inl ---
* Input one 32-bit longword.
*
* Results:
* Word in eax.
*-----------------------------------------------------------------------
*/
GLOBL GLNAME(inl)
GLNAME(inl):
MOV_L (REGOFF(4,ESP),EDX)
IN_L
RET
/*
*-----------------------------------------------------------------------
* outl ---
* Output one 32-bit longword.
*
* Results:
* None.
*-----------------------------------------------------------------------
*/
GLOBL GLNAME(outl)
GLNAME(outl):
MOV_L (REGOFF(4,ESP),EDX)
MOV_L (REGOFF(8,ESP),EAX)
OUT_L
RET
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