152 lines
5.1 KiB
C
152 lines
5.1 KiB
C
/* BFD back-end for i386 a.out binaries.
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Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define PAGE_SIZE 4096
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#define SEGMENT_SIZE PAGE_SIZE
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#define TEXT_START_ADDR 0x8000
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#define ARCH 32
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#define BYTES_IN_WORD 4
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "aout64.h"
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#include "stab.gnu.h"
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#include "ar.h"
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#include "libaout.h" /* BFD a.out internal data structures */
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bfd_target *aout386_callback ();
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bfd_target *
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DEFUN(aout386_object_p,(abfd),
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bfd *abfd)
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{
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struct external_exec exec_bytes;
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struct internal_exec exec;
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if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
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!= EXEC_BYTES_SIZE) {
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bfd_error = wrong_format;
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return 0;
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}
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exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
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if (N_BADMAG (exec)) return 0;
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NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
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return aout_32_some_aout_object_p (abfd, &exec, aout386_callback);
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}
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/* Finish up the reading of the file header */
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bfd_target *
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DEFUN(aout386_callback,(abfd),
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bfd *abfd)
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{
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struct internal_exec *execp = exec_hdr (abfd);
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WORK_OUT_FILE_POSITIONS(abfd, execp) ;
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/* Determine the architecture and machine type of the object file. */
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bfd_default_set_arch_mach(abfd, bfd_arch_i386, 0);
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return abfd->xvec;
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}
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/* Write an object file.
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Section contents have already been written. We write the
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file header, symbols, and relocation. */
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boolean
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DEFUN(aout386_write_object_contents,(abfd),
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bfd *abfd)
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{
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bfd_size_type data_pad = 0;
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struct external_exec exec_bytes;
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struct internal_exec *execp = exec_hdr (abfd);
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WRITE_HEADERS(abfd, execp);
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return true;
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}
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/* Transfer vector */
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/* We use BSD archive files. */
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#define aout386_openr_next_archived_file bfd_generic_openr_next_archived_file
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#define aout386_generic_stat_arch_elt bfd_generic_stat_arch_elt
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#define aout386_slurp_armap bfd_slurp_bsd_armap
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#define aout386_slurp_extended_name_table bfd_true
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#define aout386_write_armap bsd_write_armap
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#define aout386_truncate_arname bfd_bsd_truncate_arname
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/* We don't support core files here. */
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#define aout386_core_file_failing_command _bfd_dummy_core_file_failing_command
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#define aout386_core_file_failing_signal _bfd_dummy_core_file_failing_signal
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#define aout386_core_file_matches_executable_p \
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_bfd_dummy_core_file_matches_executable_p
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#define aout386_core_file_p _bfd_dummy_target
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#define aout386_bfd_debug_info_start bfd_void
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#define aout386_bfd_debug_info_end bfd_void
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#define aout386_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
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#define aout386_mkobject aout_32_mkobject
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#define aout386_close_and_cleanup aout_32_close_and_cleanup
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#define aout386_set_section_contents aout_32_set_section_contents
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#define aout386_get_section_contents aout_32_get_section_contents
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#define aout386_new_section_hook aout_32_new_section_hook
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#define aout386_get_symtab_upper_bound aout_32_get_symtab_upper_bound
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#define aout386_get_symtab aout_32_get_symtab
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#define aout386_get_reloc_upper_bound aout_32_get_reloc_upper_bound
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#define aout386_canonicalize_reloc aout_32_canonicalize_reloc
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#define aout386_make_empty_symbol aout_32_make_empty_symbol
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#define aout386_print_symbol aout_32_print_symbol
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#define aout386_get_lineno aout_32_get_lineno
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#define aout386_set_arch_mach aout_32_set_arch_mach
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#define aout386_find_nearest_line aout_32_find_nearest_line
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#define aout386_sizeof_headers aout_32_sizeof_headers
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bfd_target i386aout_vec = /* Intel 386 running a.out, embedded. */
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{
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"a.out-i386", /* name */
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bfd_target_aout_flavour,
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false, /* target byte order */
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false, /* target headers byte order */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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1, /* minimum alignment */
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/* data swap routines */
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
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/* header swap routines */
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
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{_bfd_dummy_target, aout386_object_p, /* bfd_check_format */
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bfd_generic_archive_p, aout386_core_file_p},
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{bfd_false, aout386_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, aout386_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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JUMP_TABLE(aout386)
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};
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