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- /* BFD back-end for binary objects.
- Copyright 1994 Free Software Foundation, Inc.
- Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>
-
- 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. */
-
- /* This is a BFD backend which may be used to write binary objects.
- It may only be used for output, not input. The intention is that
- this may be used as an output format for objcopy in order to
- generate raw binary data.
-
- This is very simple. The only complication is that the real data
- will start at some address X, and in some cases we will not want to
- include X zeroes just to get to that point. Since the start
- address is not meaningful for this object file format, we use it
- instead to indicate the number of zeroes to skip at the start of
- the file. objcopy cooperates by specially setting the start
- address to zero by default. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "libbfd.h"
-
- static boolean binary_mkobject PARAMS ((bfd *));
- static asymbol *binary_make_empty_symbol PARAMS ((bfd *));
- static boolean binary_set_section_contents
- PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
-
- /* Create a binary object. Invoked via bfd_set_format. */
-
- static boolean
- binary_mkobject (abfd)
- bfd *abfd;
- {
- return true;
- }
-
- /* Most of the symbol routines can just return an error. */
- #define binary_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
- #define binary_get_symtab _bfd_nosymbols_get_symtab
- #define binary_print_symbol _bfd_nosymbols_print_symbol
- #define binary_get_symbol_info _bfd_nosymbols_get_symbol_info
- #define binary_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
- #define binary_get_lineno _bfd_nosymbols_get_lineno
- #define binary_find_nearest_line _bfd_nosymbols_find_nearest_line
- #define binary_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
-
- /* We do have to provide a routine to make an empty symbol. */
-
- static asymbol *
- binary_make_empty_symbol (abfd)
- bfd *abfd;
- {
- asymbol *ret;
-
- ret = (asymbol *) bfd_alloc (abfd, sizeof (asymbol));
- if (ret == NULL)
- bfd_set_error (bfd_error_no_memory);
- return ret;
- }
-
- /* Set the architecture of a binary file. */
- #define binary_set_arch_mach _bfd_generic_set_arch_mach
-
- /* Write section contents of a binary file. */
-
- static boolean
- binary_set_section_contents (abfd, sec, data, offset, size)
- bfd *abfd;
- asection *sec;
- PTR data;
- file_ptr offset;
- bfd_size_type size;
- {
- if (! abfd->output_has_begun)
- {
- bfd_vma low;
- asection *s;
-
- /* The lowest section VMA sets the virtual address of the start
- of the file. We use the set the file position of all the
- sections. */
- low = abfd->sections->vma;
- for (s = abfd->sections->next; s != NULL; s = s->next)
- if (s->vma < low)
- low = s->vma;
-
- for (s = abfd->sections; s != NULL; s = s->next)
- s->filepos = s->vma - low;
-
- abfd->output_has_begun = true;
- }
-
- return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
- }
-
- const bfd_target binary_vec =
- {
- "binary", /* name */
- bfd_target_unknown_flavour, /* flavour */
- true, /* byteorder_big_p */
- true, /* header_byteorder_big_p */
- EXEC_P, /* object_flags */
- (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
- | SEC_ROM | SEC_HAS_CONTENTS), /* section_flags */
- 0, /* symbol_leading_char */
- ' ', /* ar_pad_char */
- 16, /* ar_max_namelen */
- 1, /* align_power_min */
- bfd_getb64, bfd_getb_signed_64, bfd_putb64,
- bfd_getb32, bfd_getb_signed_32, bfd_putb32,
- bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
- bfd_getb64, bfd_getb_signed_64, bfd_putb64,
- bfd_getb32, bfd_getb_signed_32, bfd_putb32,
- bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
- { /* bfd_check_format */
- _bfd_dummy_target,
- _bfd_dummy_target,
- _bfd_dummy_target,
- _bfd_dummy_target,
- },
- { /* bfd_set_format */
- bfd_false,
- binary_mkobject,
- bfd_false,
- bfd_false,
- },
- { /* bfd_write_contents */
- bfd_false,
- bfd_true,
- bfd_false,
- bfd_false,
- },
-
- BFD_JUMP_TABLE_GENERIC (_bfd_generic),
- BFD_JUMP_TABLE_COPY (_bfd_generic),
- BFD_JUMP_TABLE_CORE (_bfd_nocore),
- BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
- BFD_JUMP_TABLE_SYMBOLS (binary),
- BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
- BFD_JUMP_TABLE_WRITE (binary),
- BFD_JUMP_TABLE_LINK (_bfd_nolink),
- BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
-
- NULL
- };
-