1/* BFD back-end for i386 a.out binaries.
2   Copyright 1990, 1991, 1992, 1994, 1996, 1997, 2001, 2002, 2003
3   Free Software Foundation, Inc.
4
5This file is part of BFD, the Binary File Descriptor library.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with this program; if not, write to the Free Software
19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
20
21
22/* The only 386 aout system we have here is GO32 from DJ.
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 (sac@cygnus.com) 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
30#define N_TXTOFF(x) 0x20
31#define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0)
32
33#define N_TXTSIZE(x) ((x).a_text)
34#if 0
35#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
36#define NOSUBEXECB
37
38#endif
39#define TARGET_PAGE_SIZE 4096
40#define SEGMENT_SIZE 0x400000
41#define DEFAULT_ARCH bfd_arch_i386
42
43/* Do not "beautify" the CONCAT* macro args.  Traditional C will not
44   remove whitespace added here, and thus will fail to concatenate
45   the tokens.  */
46#define MY(OP) CONCAT2 (i386aout_,OP)
47#define TARGETNAME "a.out-i386"
48#define NO_WRITE_HEADER_KLUDGE 1
49
50#include "bfd.h"
51#include "sysdep.h"
52#include "libbfd.h"
53#include "aout/aout64.h"
54#include "libaout.h"
55
56static bfd_boolean i386aout_write_object_contents PARAMS ((bfd *));
57static bfd_boolean MY (set_sizes) PARAMS ((bfd *));
58
59/* Set the machine type correctly.  */
60
61static bfd_boolean
62i386aout_write_object_contents (abfd)
63     bfd *abfd;
64{
65  struct external_exec exec_bytes;
66  struct internal_exec *execp = exec_hdr (abfd);
67
68  N_SET_MACHTYPE (*execp, M_386);
69
70  obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
71
72  WRITE_HEADERS (abfd, execp);
73
74  return TRUE;
75}
76
77#define MY_write_object_contents i386aout_write_object_contents
78
79#define MY_backend_data &MY(backend_data)
80static const struct aout_backend_data MY(backend_data) = {
81  0,				/* zmagic contiguous */
82  1,				/* text incl header */
83  0,				/* entry is text address */
84  0,				/* exec_hdr_flags */
85  0,				/* text vma? */
86  MY(set_sizes),
87  1,				/* exec header not counted */
88  0,				/* add_dynamic_symbols */
89  0,				/* add_one_symbol */
90  0,				/* link_dynamic_object */
91  0,				/* write_dynamic_symbol */
92  0,				/* check_dynamic_reloc */
93  0				/* finish_dynamic_link */
94};
95
96#include "aout-target.h"
97