2003-11-14 17:48:57 +01:00
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/* $XConsortium: inout.s /main/6 1996/02/21 17:53:35 kaleb $ */
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2004-06-16 11:22:17 +02:00
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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/inout.S,v 1.1 1999/07/10 07:24:52 dawes Exp $ */
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2003-11-14 17:48:57 +01:00
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#include "assyntax.h"
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/*
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* Make i80386 io primitives available at C-level.
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*/
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FILE("inout.s")
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AS_BEGIN
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SEG_TEXT
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/*
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*-----------------------------------------------------------------------
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* inb ---
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* Input one byte.
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*
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* Results:
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* Byte in al.
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*-----------------------------------------------------------------------
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*/
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GLOBL GLNAME(inb)
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GLNAME(inb):
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MOV_L (REGOFF(4,ESP),EDX)
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SUB_L (EAX,EAX)
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IN_B
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RET
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/*
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*-----------------------------------------------------------------------
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* outb ---
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* Output one byte.
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*
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* Results:
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* None.
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*-----------------------------------------------------------------------
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*/
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GLOBL GLNAME(outb)
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GLNAME(outb):
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MOV_L (REGOFF(4,sp),EDX)
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MOV_L (REGOFF(8,sp),EAX)
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OUT_B
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RET
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/*
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*-----------------------------------------------------------------------
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* inw ---
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* Input one 16-bit word.
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*
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* Results:
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* Word in ax.
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*-----------------------------------------------------------------------
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*/
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GLOBL GLNAME(inw)
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GLNAME(inw):
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MOV_L (REGOFF(4,ESP),EDX)
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IN_W
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RET
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/*
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*-----------------------------------------------------------------------
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* outw ---
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* Output one 16-bit word.
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*
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* Results:
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* None.
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*-----------------------------------------------------------------------
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*/
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GLOBL GLNAME(outw)
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GLNAME(outw):
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MOV_L (REGOFF(4,ESP),EDX)
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MOV_L (REGOFF(8,ESP),EAX)
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OUT_W
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RET
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/*
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*-----------------------------------------------------------------------
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* inl ---
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* Input one 32-bit longword.
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*
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* Results:
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* Word in eax.
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*-----------------------------------------------------------------------
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*/
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GLOBL GLNAME(inl)
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GLNAME(inl):
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MOV_L (REGOFF(4,ESP),EDX)
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IN_L
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RET
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/*
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*-----------------------------------------------------------------------
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* outl ---
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* Output one 32-bit longword.
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*
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* Results:
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* None.
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*-----------------------------------------------------------------------
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*/
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GLOBL GLNAME(outl)
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GLNAME(outl):
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MOV_L (REGOFF(4,ESP),EDX)
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MOV_L (REGOFF(8,ESP),EAX)
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OUT_L
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RET
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