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  1. /****************************************************************************
  2. *
  3. *                            Open Watcom Project
  4. *
  5. *    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
  6. *
  7. *  ========================================================================
  8. *
  9. *    This file contains Original Code and/or Modifications of Original
  10. *    Code as defined in and that are subject to the Sybase Open Watcom
  11. *    Public License version 1.0 (the 'License'). You may not use this file
  12. *    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
  13. *    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
  14. *    provided with the Original Code and Modifications, and is also
  15. *    available at www.sybase.com/developer/opensource.
  16. *
  17. *    The Original Code and all software distributed under the License are
  18. *    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  19. *    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
  20. *    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
  21. *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
  22. *    NON-INFRINGEMENT. Please see the License for the specific language
  23. *    governing rights and limitations under the License.
  24. *
  25. *  ========================================================================
  26. *
  27. * Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
  28. *               DESCRIBE IT HERE!
  29. *
  30. ****************************************************************************/
  31.  
  32.  
  33. #include "variety.h"
  34. #include <i86.h>
  35.  
  36. extern  unsigned short  _CS(), _DS(), _ES(), _SS();
  37.  
  38. #pragma aux     _CS = 0x8C 0xC8 /* mov ax,cs */ value [ax];
  39. #pragma aux     _DS = 0x8C 0xD8 /* mov ax,ds */ value [ax];
  40. #pragma aux     _ES = 0x8C 0xC0 /* mov ax,es */ value [ax];
  41. #pragma aux     _SS = 0x8C 0xD0 /* mov ax,ss */ value [ax];
  42. #if defined(__386__)
  43. extern  unsigned short  _FS(), _GS();
  44. #pragma aux     _FS = 0x8C 0xE0 /* mov ax,fs */ value [ax];
  45. #pragma aux     _GS = 0x8C 0xE8 /* mov ax,gs */ value [ax];
  46. #endif
  47.  
  48.  
  49. _WCRTLINK void segread( struct SREGS *segregs )
  50.     {
  51.         __ptr_check( segregs, 0 );
  52.         segregs->cs = _CS();
  53.         segregs->ds = _DS();
  54.         segregs->es = _ES();
  55.         segregs->ss = _SS();
  56. #if defined(__386__)
  57.         segregs->fs = _FS();
  58.         segregs->gs = _GS();
  59. #endif
  60.     }
  61.