/* $Id: MZexe.h,v 1.1.2.2 2002-04-01 10:01:00 bird Exp $ * * MZ DEFINITIONS AND DECLARATIONS. * -------------------------------- * * Copyright Robert J. Amstadt 1993 * Copyright IBM Corp 1984-1992 * Copyright IBM Corp 1987-1992 * Copyright Microsoft Corp 1984-1987 * Copyright knut st. osmundsen (bird@anduin.net) * */ #ifndef _MZexe_h_ #define _MZexe_h_ /* * The EXE.h way of declaring this struct. */ struct exe { unsigned short eid; /* contains EXEID, below */ unsigned short elast; /* # of bytes in last page */ unsigned short epagsiz; /* # of pages in whole file */ unsigned short erelcnt; /* # of relocation entrys */ unsigned short ehdrsiz; /* size of header, in paragraphs */ unsigned short eminfre; /* min # of free paragraphs needed */ unsigned short emaxfre; /* max # of free paragraphs needed */ unsigned short eiSS; /* initial SS value */ unsigned short eiSP; /* initial SP value */ unsigned short enegsum; /* negative sum of entire file */ unsigned short eiIP; /* initial IP value */ unsigned short eiCS; /* initial CS value */ unsigned short ereloff; /* offset in file of relocation table */ unsigned short eovlnum; /* number of the overlay */ /* * the following fields may not be present. * ereloff = 28 not present * = 30 exe.ever present and valid * = 32 exe.ever field contains garbage * ereloff > 32 exe.ever present and valid * = 0 if "don't know" */ unsigned short ever; /* version # of producing linker */ unsigned short dumy; /* unused */ /* * the following fields may not be present - if the exe.ereloff * value encompasses the fields then they are present and valid. */ unsigned short ebb; /* behavior bits */ unsigned short dumy2[7]; /* must be 0 until defined */ }; /* * The NEWEXE.h way of declaring this header. */ #define EMAGIC 0x5A4D /* Old magic number */ #define ENEWEXE sizeof(struct exe_hdr) /* Value of E_LFARLC for new .EXEs */ #define ENEWHDR 0x003C /* Offset in old hdr. of ptr. to new */ #define ERESWDS 0x0010 /* No. of reserved words (OLD) */ #define ERES1WDS 0x0004 /* No. of reserved words in e_res */ #define ERES2WDS 0x000A /* No. of reserved words in e_res2 */ #define ECP 0x0004 /* Offset in struct of E_CP */ #define ECBLP 0x0002 /* Offset in struct of E_CBLP */ #define EMINALLOC 0x000A /* Offset in struct of E_MINALLOC */ struct exe_hdr /* DOS 1, 2, 3 .EXE header */ { unsigned short e_magic; /* Magic number */ unsigned short e_cblp; /* Bytes on last page of file */ unsigned short e_cp; /* Pages in file */ unsigned short e_crlc; /* Relocations */ unsigned short e_cparhdr; /* Size of header in paragraphs */ unsigned short e_minalloc; /* Minimum extra paragraphs needed */ unsigned short e_maxalloc; /* Maximum extra paragraphs needed */ unsigned short e_ss; /* Initial (relative) SS value */ unsigned short e_sp; /* Initial SP value */ unsigned short e_csum; /* Checksum */ unsigned short e_ip; /* Initial IP value */ unsigned short e_cs; /* Initial (relative) CS value */ unsigned short e_lfarlc; /* File address of relocation table */ unsigned short e_ovno; /* Overlay number */ unsigned short e_res[ERES1WDS];/* Reserved words */ unsigned short e_oemid; /* OEM identifier (for e_oeminfo) */ unsigned short e_oeminfo; /* OEM information; e_oemid specific */ unsigned short e_res2[ERES2WDS];/* Reserved words */ long e_lfanew; /* File address of new exe header */ }; /* * The NT way of declaring this header. */ typedef struct { unsigned short e_magic; /* MZ Header signature */ unsigned short e_cblp; /* Bytes on last page of file */ unsigned short e_cp; /* Pages in file */ unsigned short e_crlc; /* Relocations */ unsigned short e_cparhdr; /* Size of header in paragraphs */ unsigned short e_minalloc; /* Minimum extra paragraphs needed */ unsigned short e_maxalloc; /* Maximum extra paragraphs needed */ unsigned short e_ss; /* Initial (relative) SS value */ unsigned short e_sp; /* Initial SP value */ unsigned short e_csum; /* Checksum */ unsigned short e_ip; /* Initial IP value */ unsigned short e_cs; /* Initial (relative) CS value */ unsigned short e_lfarlc; /* File address of relocation table */ unsigned short e_ovno; /* Overlay number */ unsigned short e_res[4]; /* Reserved words */ unsigned short e_oemid; /* OEM identifier (for e_oeminfo) */ unsigned short e_oeminfo; /* OEM information; e_oemid specific */ unsigned short e_res2[10]; /* Reserved words */ unsigned long e_lfanew; /* Offset to extended header */ } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER; #define IMAGE_DOS_SIGNATURE 0x5A4D /* MZ */ #endif