[binutils.git] / bfd / i386aout.c

/* BFD back-end for i386 a.out binaries.
   Copyright 1990, 1991, 1992, 1994, 1996, 1997, 2001
   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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */


/* The only 386 aout system we have here is GO32 from DJ.
   These numbers make BFD work with that. If your aout 386 system
   doesn't work with these, we'll have to split them into different
   files.  Send me ([email protected]) the runes to make it work on your
   system, and I'll stick it in for the next release.  */

#define N_HEADER_IN_TEXT(x) 0
#define BYTES_IN_WORD 4

#define N_TXTOFF(x) 0x20
#define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0)

#define N_TXTSIZE(x) ((x).a_text)
#if 0
#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
#define NOSUBEXECB

#endif
#define TARGET_PAGE_SIZE 4096
#define SEGMENT_SIZE 0x400000
#define DEFAULT_ARCH bfd_arch_i386

/* Do not "beautify" the CONCAT* macro args.  Traditional C will not
   remove whitespace added here, and thus will fail to concatenate
   the tokens.  */
#define MY(OP) CONCAT2 (i386aout_,OP)
#define TARGETNAME "a.out-i386"
#define NO_WRITE_HEADER_KLUDGE 1

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "aout/aout64.h"
#include "libaout.h"

static boolean i386aout_write_object_contents PARAMS ((bfd *));
static boolean MY (set_sizes) PARAMS ((bfd *));

/* Set the machine type correctly.  */

static boolean
i386aout_write_object_contents (abfd)
     bfd *abfd;
{
  struct external_exec exec_bytes;
  struct internal_exec *execp = exec_hdr (abfd);

  N_SET_MACHTYPE (*execp, M_386);

  obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;

  WRITE_HEADERS (abfd, execp);

  return true;
}

#define MY_write_object_contents i386aout_write_object_contents

#define MY_backend_data &MY(backend_data)
static const struct aout_backend_data MY(backend_data) = {
  0,				/* zmagic contiguous */
  1,				/* text incl header */
  0,				/* entry is text address */
  0,				/* exec_hdr_flags */
  0,				/* text vma? */
  MY(set_sizes),
  1,				/* exec header not counted */
  0,				/* add_dynamic_symbols */
  0,				/* add_one_symbol */
  0,				/* link_dynamic_object */
  0,				/* write_dynamic_symbol */
  0,				/* check_dynamic_reloc */
  0				/* finish_dynamic_link */
};

#include "aout-target.h"
Commit	Line	Data
252b5132	1	/* BFD back-end for i386 a.out binaries.
e4b17274	2	Copyright 1990, 1991, 1992, 1994, 1996, 1997, 2001
7898deda	3	Free Software Foundation, Inc.
252b5132 RH	4
	5	This file is part of BFD, the Binary File Descriptor library.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	20
	21
dc810e39	22	/* The only 386 aout system we have here is GO32 from DJ.
252b5132 RH	23	These numbers make BFD work with that. If your aout 386 system
	24	doesn't work with these, we'll have to split them into different
	25	files. Send me ([email protected]) the runes to make it work on your
	26	system, and I'll stick it in for the next release. */
	27
	28	#define N_HEADER_IN_TEXT(x) 0
	29	#define BYTES_IN_WORD 4
	30
	31	#define N_TXTOFF(x) 0x20
	32	#define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0)
	33
	34	#define N_TXTSIZE(x) ((x).a_text)
	35	#if 0
	36	#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
	37	#define NOSUBEXECB
	38
	39	#endif
	40	#define TARGET_PAGE_SIZE 4096
	41	#define SEGMENT_SIZE 0x400000
	42	#define DEFAULT_ARCH bfd_arch_i386
	43
e43d48cc AM	44	/* Do not "beautify" the CONCAT* macro args. Traditional C will not
	45	remove whitespace added here, and thus will fail to concatenate
	46	the tokens. */
	47	#define MY(OP) CONCAT2 (i386aout_,OP)
252b5132 RH	48	#define TARGETNAME "a.out-i386"
	49	#define NO_WRITE_HEADER_KLUDGE 1
	50
	51	#include "bfd.h"
	52	#include "sysdep.h"
	53	#include "libbfd.h"
	54	#include "aout/aout64.h"
	55	#include "libaout.h"
	56
e4b17274 NC	57	static boolean i386aout_write_object_contents PARAMS ((bfd *));
	58	static boolean MY (set_sizes) PARAMS ((bfd *));
	59
252b5132 RH	60	/* Set the machine type correctly. */
	61
	62	static boolean
	63	i386aout_write_object_contents (abfd)
	64	bfd *abfd;
	65	{
	66	struct external_exec exec_bytes;
	67	struct internal_exec *execp = exec_hdr (abfd);
	68
	69	N_SET_MACHTYPE (*execp, M_386);
	70
	71	obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
	72
	73	WRITE_HEADERS (abfd, execp);
	74
	75	return true;
	76	}
	77
	78	#define MY_write_object_contents i386aout_write_object_contents
	79
252b5132	80	#define MY_backend_data &MY(backend_data)
dc810e39	81	static const struct aout_backend_data MY(backend_data) = {
252b5132 RH	82	0, /* zmagic contiguous */
	83	1, /* text incl header */
	84	0, /* entry is text address */
	85	0, /* exec_hdr_flags */
	86	0, /* text vma? */
	87	MY(set_sizes),
	88	1, /* exec header not counted */
	89	0, /* add_dynamic_symbols */
	90	0, /* add_one_symbol */
	91	0, /* link_dynamic_object */
	92	0, /* write_dynamic_symbol */
	93	0, /* check_dynamic_reloc */
	94	0 /* finish_dynamic_link */
	95	};
	96
	97	#include "aout-target.h"