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/* msdos.h - MS-DOS and derived executable header information
Copyright (C) 1999-2021 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _MSDOS_H
#define _MSDOS_H
#define IMAGE_DOS_SIGNATURE 0x5a4d /* MZ */
#define IMAGE_OS2_SIGNATURE 0x454e /* NE */
#define IMAGE_OS2_SIGNATURE_LE 0x454c /* LE */
#define IMAGE_OS2_SIGNATURE_LX 0x584c /* LX */
#define IMAGE_NT_SIGNATURE 0x00004550 /* PE\0\0 */
struct external_DOS_hdr
/* DOS header fields - always at offset zero in the EXE file. */
char e_magic[2]; /* Magic number. */
char e_cblp[2]; /* Bytes on last page of file. */
char e_cp[2]; /* Pages in file. */
char e_crlc[2]; /* Relocations. */
char e_cparhdr[2]; /* Size of header in paragraphs. */
char e_minalloc[2]; /* Minimum extra paragraphs needed. */
char e_maxalloc[2]; /* Maximum extra paragraphs needed. */
char e_ss[2]; /* Initial (relative) SS value. */
char e_sp[2]; /* Initial SP value. */
char e_csum[2]; /* Checksum. */
char e_ip[2]; /* Initial IP value. */
char e_cs[2]; /* Initial (relative) CS value. */
char e_lfarlc[2]; /* File address of relocation table. */
char e_ovno[2]; /* Overlay number. */
char e_res[4][2]; /* Reserved words, all 0x0. */
char e_oemid[2]; /* OEM identifier. */
char e_oeminfo[2]; /* OEM information. */
char e_res2[10][2]; /* Reserved words, all 0x0. */
char e_lfanew[4]; /* File address of new exe header, usually 0x80. */
char dos_message[16][4]; /* Other stuff, always follow DOS header. */
/* The actual DOS header only includes up to the e_ovno field. */
#define DOS_HDR_SIZE (offsetof (struct external_DOS_hdr, e_res))
#endif /* _MSDOS_H */