kolibrios-fun/programs/develop/open watcom/trunk/clib/intel/segread.c

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*  ========================================================================
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*    This file contains Original Code and/or Modifications of Original
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#include "variety.h"
#include <i86.h>

extern  unsigned short  _CS(), _DS(), _ES(), _SS();

#pragma aux     _CS = 0x8C 0xC8 /* mov ax,cs */ value [ax];
#pragma aux     _DS = 0x8C 0xD8 /* mov ax,ds */ value [ax];
#pragma aux     _ES = 0x8C 0xC0 /* mov ax,es */ value [ax];
#pragma aux     _SS = 0x8C 0xD0 /* mov ax,ss */ value [ax];
#if defined(__386__)
extern  unsigned short  _FS(), _GS();
#pragma aux     _FS = 0x8C 0xE0 /* mov ax,fs */ value [ax];
#pragma aux     _GS = 0x8C 0xE8 /* mov ax,gs */ value [ax];
#endif


_WCRTLINK void segread( struct SREGS *segregs )
    {
        __ptr_check( segregs, 0 );
        segregs->cs = _CS();
        segregs->ds = _DS();
        segregs->es = _ES();
        segregs->ss = _SS();
#if defined(__386__)
        segregs->fs = _FS();
        segregs->gs = _GS();
#endif
    }