binutils-gdb/bfd/i386aout.c

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/* BFD back-end for i386 a.out binaries.
Copyright 1990, 1991, 1992, 1994, 1996, 1997, 2001, 2002
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Free Software Foundation, Inc.
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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.
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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 (sac@cygnus.com) 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
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/* 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)
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#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 bfd_boolean i386aout_write_object_contents PARAMS ((bfd *));
static bfd_boolean MY (set_sizes) PARAMS ((bfd *));
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/* Set the machine type correctly. */
static bfd_boolean
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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;
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}
#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) = {
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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"