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authorJohn Gilmore <gnu@cygnus>1991-10-11 04:51:42 +0000
committerJohn Gilmore <gnu@cygnus>1991-10-11 04:51:42 +0000
commit6a469027327f00bc96ad8bb3d17d15d8c41ab20f (patch)
treed008583329a3da59d7868f657b12efff263e94bc /bfd/i386aout.c
parent074274252f942a2660c310218943f2aa4ef2e237 (diff)
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* Makefile.in: Rename XDEPFILES.
* trad-core.c: Document how to use it nowadays. * i386aout.c, newsos3.c: Clean up. * i386coff.c: Allow 386 coff files to be used as core files too (for reading core files from embedded systems).
Diffstat (limited to 'bfd/i386aout.c')
-rw-r--r--bfd/i386aout.c158
1 files changed, 158 insertions, 0 deletions
diff --git a/bfd/i386aout.c b/bfd/i386aout.c
new file mode 100644
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+++ b/bfd/i386aout.c
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+/* BFD back-end for i386 a.out binaries.
+ Copyright (C) 1990, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define PAGE_SIZE 4096
+#define SEGMENT_SIZE PAGE_SIZE
+#define TEXT_START_ADDR 0x8000
+#define ARCH 32
+#define BYTES_IN_WORD 4
+
+#include <ansidecl.h>
+#include <sysdep.h>
+#include "bfd.h"
+#include "libbfd.h"
+#include "aout64.h"
+
+/**From: bothner@cs.wisc.edu***********************************************/
+#undef N_TXTOFF
+#define N_TXTOFF(x) ( (N_MAGIC((x)) == ZMAGIC) ? PAGE_SIZE : EXEC_BYTES_SIZE)
+/**************************************************************************/
+
+#include "stab.gnu.h"
+#include "ar.h"
+#include "libaout.h" /* BFD a.out internal data structures */
+
+bfd_target *aout386_callback ();
+
+bfd_target *
+DEFUN(aout386_object_p,(abfd),
+ bfd *abfd)
+{
+ struct external_exec exec_bytes;
+ struct internal_exec exec;
+
+ if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
+ != EXEC_BYTES_SIZE) {
+ bfd_error = wrong_format;
+ return 0;
+ }
+
+ exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
+
+ if (N_BADMAG (exec)) return 0;
+
+ NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
+ return aout_32_some_aout_object_p (abfd, &exec, aout386_callback);
+}
+
+/* Finish up the reading of the file header */
+bfd_target *
+DEFUN(aout386_callback,(abfd),
+ bfd *abfd)
+{
+ struct internal_exec *execp = exec_hdr (abfd);
+
+ WORK_OUT_FILE_POSITIONS(abfd, execp) ;
+
+ /* Determine the architecture and machine type of the object file. */
+ bfd_default_set_arch_mach(abfd, bfd_arch_i386, 0);
+
+ return abfd->xvec;
+}
+
+/* Write an object file.
+ Section contents have already been written. We write the
+ file header, symbols, and relocation. */
+
+boolean
+DEFUN(aout386_write_object_contents,(abfd),
+ bfd *abfd)
+{
+ bfd_size_type data_pad = 0;
+ struct external_exec exec_bytes;
+ struct internal_exec *execp = exec_hdr (abfd);
+
+ WRITE_HEADERS(abfd, execp);
+ return true;
+}
+
+/* Transfer vector */
+
+/* We use BSD archive files. */
+#define aout386_openr_next_archived_file bfd_generic_openr_next_archived_file
+#define aout386_generic_stat_arch_elt bfd_generic_stat_arch_elt
+#define aout386_slurp_armap bfd_slurp_bsd_armap
+#define aout386_slurp_extended_name_table bfd_true
+#define aout386_write_armap bsd_write_armap
+#define aout386_truncate_arname bfd_bsd_truncate_arname
+
+/* We don't support core files here. */
+#define aout386_core_file_failing_command _bfd_dummy_core_file_failing_command
+#define aout386_core_file_failing_signal _bfd_dummy_core_file_failing_signal
+#define aout386_core_file_matches_executable_p \
+ _bfd_dummy_core_file_matches_executable_p
+#define aout386_core_file_p _bfd_dummy_target
+
+#define aout386_bfd_debug_info_start bfd_void
+#define aout386_bfd_debug_info_end bfd_void
+#define aout386_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
+
+#define aout386_mkobject aout_32_mkobject
+#define aout386_close_and_cleanup aout_32_close_and_cleanup
+#define aout386_set_section_contents aout_32_set_section_contents
+#define aout386_get_section_contents aout_32_get_section_contents
+#define aout386_new_section_hook aout_32_new_section_hook
+#define aout386_get_symtab_upper_bound aout_32_get_symtab_upper_bound
+#define aout386_get_symtab aout_32_get_symtab
+#define aout386_get_reloc_upper_bound aout_32_get_reloc_upper_bound
+#define aout386_canonicalize_reloc aout_32_canonicalize_reloc
+#define aout386_make_empty_symbol aout_32_make_empty_symbol
+#define aout386_print_symbol aout_32_print_symbol
+#define aout386_get_lineno aout_32_get_lineno
+#define aout386_set_arch_mach aout_32_set_arch_mach
+#define aout386_find_nearest_line aout_32_find_nearest_line
+#define aout386_sizeof_headers aout_32_sizeof_headers
+
+bfd_target i386aout_vec = /* Intel 386 running a.out, embedded. */
+{
+ "a.out-i386", /* name */
+ bfd_target_aout_flavour,
+ false, /* target byte order */
+ false, /* target headers byte order */
+ (HAS_RELOC | EXEC_P | /* object flags */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ ' ', /* ar_pad_char */
+ 16, /* ar_max_namelen */
+ 1, /* minimum alignment */
+ /* data swap routines */
+ _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
+ /* header swap routines */
+ _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
+
+ {_bfd_dummy_target, aout386_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, aout386_core_file_p},
+ {bfd_false, aout386_mkobject, /* bfd_set_format */
+ _bfd_generic_mkarchive, bfd_false},
+ {bfd_false, aout386_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ JUMP_TABLE(aout386)
+};