binutils-gdb/include/coff/msdos.h
Zebediah Figura 830db0485e Add support for reading msdos MZ executables.
See email thread starting here:  https://www.sourceware.org/ml/binutils/2018-01/msg00001.html

include	* coff/msdos.h: New header.
	* coff/pe.h: Move common defines to msdos.h.
	* coff/powerpc.h: Likewise.

bfd	* i386msdos.c (msdos_mkobject); New function.
	(msdos_object_p): New function.
	(i386_msdos_vec): Use msdos_object_p as the check_format
	function.
	* peicode.h: Rename external_PEI_DOS_hdr, DOSMAGIC, and
	NT_SIGNATURE to external_DOS_hdr, IMAGE_DOS_SIGNATURE, and
	IMAGE_NT_SIGNATURE.
	* peXXigen.c: Likewise.
	* coff-ia64.c: Likewise.
2018-02-12 13:15:56 +00:00

58 lines
2.4 KiB
C

/* msdos.h - MS-DOS and derived executable header information
Copyright (C) 1999-2018 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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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 */