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c768bd3f2d
* Makefile.in (BFD_LIBS): Add binary.o. (CFILES): Add binary.c. * targets.c (binary_vec): Declare. (bfd_target_vector): Include binary_vec.
158 lines
4.9 KiB
C
158 lines
4.9 KiB
C
/* BFD back-end for binary objects.
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Copyright 1994 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>
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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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/* This is a BFD backend which may be used to write binary objects.
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It may only be used for output, not input. The intention is that
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this may be used as an output format for objcopy in order to
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generate raw binary data.
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This is very simple. The only complication is that the real data
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will start at some address X, and in some cases we will not want to
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include X zeroes just to get to that point. Since the start
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address is not meaningful for this object file format, we use it
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instead to indicate the number of zeroes to skip at the start of
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the file. objcopy cooperates by specially setting the start
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address to zero by default. */
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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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static boolean binary_mkobject PARAMS ((bfd *));
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static asymbol *binary_make_empty_symbol PARAMS ((bfd *));
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static boolean binary_set_section_contents
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PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
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/* Create a binary object. Invoked via bfd_set_format. */
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static boolean
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binary_mkobject (abfd)
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bfd *abfd;
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{
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return true;
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}
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/* Most of the symbol routines can just return an error. */
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#define binary_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
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#define binary_get_symtab _bfd_nosymbols_get_symtab
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#define binary_print_symbol _bfd_nosymbols_print_symbol
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#define binary_get_symbol_info _bfd_nosymbols_get_symbol_info
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#define binary_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
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#define binary_get_lineno _bfd_nosymbols_get_lineno
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#define binary_find_nearest_line _bfd_nosymbols_find_nearest_line
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#define binary_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
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/* We do have to provide a routine to make an empty symbol. */
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static asymbol *
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binary_make_empty_symbol (abfd)
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bfd *abfd;
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{
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asymbol *ret;
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ret = (asymbol *) bfd_alloc (abfd, sizeof (asymbol));
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if (ret == NULL)
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bfd_set_error (bfd_error_no_memory);
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return ret;
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}
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/* Set the architecture of a binary file. */
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#define binary_set_arch_mach _bfd_generic_set_arch_mach
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/* Write section contents of a binary file. */
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static boolean
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binary_set_section_contents (abfd, sec, data, offset, size)
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bfd *abfd;
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asection *sec;
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PTR data;
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file_ptr offset;
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bfd_size_type size;
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{
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/* In a binary file, the file position of a section is just the VMA
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minus the start address. */
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sec->filepos = bfd_section_vma (abfd, sec) - bfd_get_start_address (abfd);
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if (sec->filepos + offset < 0)
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{
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file_ptr adjust;
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adjust = - (sec->filepos + offset);
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if (size <= adjust)
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return true;
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size -= adjust;
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data = (PTR) ((bfd_byte *) data + adjust);
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offset += adjust;
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}
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return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
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}
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const bfd_target binary_vec =
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{
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"binary", /* name */
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bfd_target_unknown_flavour, /* flavour */
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true, /* byteorder_big_p */
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true, /* header_byteorder_big_p */
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EXEC_P, /* object_flags */
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(SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
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| SEC_ROM | SEC_HAS_CONTENTS), /* section_flags */
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0, /* symbol_leading_char */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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1, /* align_power_min */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
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{ /* bfd_check_format */
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_bfd_dummy_target,
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_bfd_dummy_target,
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_bfd_dummy_target,
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_bfd_dummy_target,
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},
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{ /* bfd_set_format */
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bfd_false,
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binary_mkobject,
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bfd_false,
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bfd_false,
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},
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{ /* bfd_write_contents */
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bfd_false,
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bfd_true,
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bfd_false,
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bfd_false,
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},
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BFD_JUMP_TABLE_GENERIC (_bfd_generic),
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BFD_JUMP_TABLE_COPY (_bfd_generic),
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BFD_JUMP_TABLE_CORE (_bfd_nocore),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
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BFD_JUMP_TABLE_SYMBOLS (binary),
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BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
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BFD_JUMP_TABLE_WRITE (binary),
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BFD_JUMP_TABLE_LINK (_bfd_nolink),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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NULL
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};
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