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C/C++ Source or Header  |  1997-08-17  |  3KB  |  87 lines
  1. /*static char *SCCSID = "@(#)exe.h    6.3 92/03/15";*/
  2. /*static char *SCCSID = "@(#)exe.h    6.3 92/03/15";*/
  3. /****************************** Module Header ******************************\
  4. *                                                                          *
  5. * Copyright (c) 1987  - 1992 IBM Corporation                               *
  6. *                                                                          *
  7. * Module Name: EXE.H                                                       *
  8. *                                                                          *
  9. * EXE header format.                                                       *
  10. *                                                                          *
  11. \***************************************************************************/
  12.  
  13. #if __IBMC__ || __IBMCPP__
  14. #pragma info( none )
  15.    #ifndef __CHKHDR__
  16.       #pragma info( none )
  17.    #endif
  18. #pragma info( restore )
  19. #endif
  20. #ifdef __cplusplus
  21.       extern "C" {
  22. #endif
  23.  
  24. #ifndef __EXE__
  25. #define __EXE__
  26.  
  27. #ifndef BYTE
  28. typedef unsigned char BYTE;
  29. #endif
  30.  
  31. #ifndef WORD
  32. typedef unsigned short WORD;
  33. #endif
  34.  
  35. typedef WORD bbmask;
  36.  
  37. struct exe {
  38.         WORD eid;                       /* contains EXEID, below */
  39.         WORD elast;                     /* # of bytes in last page */
  40.         WORD epagsiz;                   /* # of pages in whole file */
  41.         WORD erelcnt;                   /* # of relocation entrys */
  42.         WORD ehdrsiz;                   /* size of header, in paragraphs */
  43.         WORD eminfre;                   /* min # of free paragraphs needed */
  44.         WORD emaxfre;                   /* max # of free paragraphs needed */
  45.         WORD eiSS;                      /* initial SS value */
  46.         WORD eiSP;                      /* initial SP value */
  47.         WORD enegsum;                   /* negative sum of entire file */
  48.         WORD eiIP;                      /* initial IP value */
  49.         WORD eiCS;                      /* initial CS value */
  50.         WORD ereloff;                   /* offset in file of relocation table */
  51.         WORD eovlnum;                   /* number of the overlay */
  52.  
  53. /*      the following fields may not be present.
  54.  *              ereloff = 28            not present
  55.  *                      = 30            exe.ever present and valid
  56.  *                      = 32            exe.ever field contains garbage
  57.  *              ereloff > 32            exe.ever present and valid
  58.  *                                              = 0 if "don't know"
  59.  */
  60.  
  61.         WORD ever;                      /* version # of producing linker */
  62.         WORD dumy;                      /* unused */
  63.  
  64. /*      the following fields may not be present - if the exe.ereloff
  65.  *      value encompasses the fields then they are present and valid.
  66.  */
  67.  
  68.         bbmask  ebb;                    /* behavior bits */
  69.         WORD dumy2[7];                  /* must be 0 until defined */
  70. };
  71.  
  72.  
  73. #define EXEID 0x5a4d                    /* magic ID value */
  74.  
  75. #endif /* __EXE__ */
  76.  
  77. #ifdef __cplusplus
  78.         }
  79. #endif
  80. #if __IBMC__ || __IBMCPP__
  81. #pragma info( none )
  82.    #ifndef __CHKHDR__
  83.       #pragma info( restore )
  84.    #endif
  85. #pragma info( restore )
  86. #endif
  87.