| /* simple.c -- BFD simple client routines |
| Copyright 2002 |
| Free Software Foundation, Inc. |
| Contributed by MontaVista Software, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "bfdlink.h" |
| |
| static boolean |
| simple_dummy_warning (struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| const char *warning ATTRIBUTE_UNUSED, |
| const char *symbol ATTRIBUTE_UNUSED, |
| bfd *abfd ATTRIBUTE_UNUSED, |
| asection *section ATTRIBUTE_UNUSED, |
| bfd_vma address ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| static boolean |
| simple_dummy_undefined_symbol (struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| const char *name ATTRIBUTE_UNUSED, |
| bfd *abfd ATTRIBUTE_UNUSED, |
| asection *section ATTRIBUTE_UNUSED, |
| bfd_vma address ATTRIBUTE_UNUSED, |
| boolean fatal ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| static boolean |
| simple_dummy_reloc_overflow (struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| const char *name ATTRIBUTE_UNUSED, |
| const char *reloc_name ATTRIBUTE_UNUSED, |
| bfd_vma addend ATTRIBUTE_UNUSED, |
| bfd *abfd ATTRIBUTE_UNUSED, |
| asection *section ATTRIBUTE_UNUSED, |
| bfd_vma address ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| static boolean |
| simple_dummy_reloc_dangerous (struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| const char *message ATTRIBUTE_UNUSED, |
| bfd *abfd ATTRIBUTE_UNUSED, |
| asection *section ATTRIBUTE_UNUSED, |
| bfd_vma address ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| static boolean |
| simple_dummy_unattached_reloc (struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
| const char *name ATTRIBUTE_UNUSED, |
| bfd *abfd ATTRIBUTE_UNUSED, |
| asection *section ATTRIBUTE_UNUSED, |
| bfd_vma address ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| /* |
| FUNCTION |
| bfd_simple_relocate_secton |
| |
| SYNOPSIS |
| bfd_byte *bfd_simple_get_relocated_section_contents (bfd *abfd, asection *sec, bfd_byte *outbuf); |
| |
| DESCRIPTION |
| Returns the relocated contents of section @var{sec}. Only symbols |
| from @var{abfd} and the output offsets assigned to sections in |
| @var{abfd} are used. The result will be stored at @var{outbuf} |
| or allocated with @code{bfd_malloc} if @var{outbuf} is @code{NULL}. |
| |
| Generally all sections in @var{abfd} should have their |
| @code{output_section} pointing back to the original section. |
| |
| Returns @code{NULL} on a fatal error; ignores errors applying |
| particular relocations. |
| */ |
| |
| bfd_byte * |
| bfd_simple_get_relocated_section_contents (bfd *abfd, asection *sec, |
| bfd_byte *outbuf) |
| { |
| struct bfd_link_info link_info; |
| struct bfd_link_order link_order; |
| struct bfd_link_callbacks callbacks; |
| bfd_byte *contents, *data; |
| int storage_needed, number_of_symbols; |
| asymbol **symbol_table; |
| |
| /* In order to use bfd_get_relocated_section_contents, we need |
| to forge some data structures that it expects. */ |
| |
| /* Fill in the bare minimum number of fields for our purposes. */ |
| memset (&link_info, 0, sizeof (link_info)); |
| link_info.input_bfds = abfd; |
| |
| link_info.hash = bfd_link_hash_table_create (abfd); |
| link_info.callbacks = &callbacks; |
| callbacks.warning = simple_dummy_warning; |
| callbacks.undefined_symbol = simple_dummy_undefined_symbol; |
| callbacks.reloc_overflow = simple_dummy_reloc_overflow; |
| callbacks.reloc_dangerous = simple_dummy_reloc_dangerous; |
| callbacks.unattached_reloc = simple_dummy_unattached_reloc; |
| |
| memset (&link_order, 0, sizeof (link_order)); |
| link_order.next = NULL; |
| link_order.type = bfd_indirect_link_order; |
| link_order.offset = 0; |
| link_order.size = bfd_section_size (abfd, sec); |
| link_order.u.indirect.section = sec; |
| |
| data = NULL; |
| if (outbuf == NULL) |
| { |
| data = bfd_malloc (bfd_section_size (abfd, sec)); |
| if (data == NULL) |
| return NULL; |
| outbuf = data; |
| } |
| bfd_link_add_symbols (abfd, &link_info); |
| |
| storage_needed = bfd_get_symtab_upper_bound (abfd); |
| symbol_table = (asymbol **) bfd_malloc (storage_needed); |
| number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table); |
| |
| contents = bfd_get_relocated_section_contents (abfd, |
| &link_info, |
| &link_order, |
| outbuf, |
| 0, |
| symbol_table); |
| if (contents == NULL && data != NULL) |
| free (data); |
| |
| /* Foul hack to prevent bfd_section_size aborts. This flag only controls |
| that macro (and the related size macros), selecting between _raw_size |
| and _cooked_size. Debug sections won't change size while we're only |
| relocating. There may be trouble here someday if it tries to run |
| relaxation unexpectedly, so make sure. */ |
| BFD_ASSERT (sec->_raw_size == sec->_cooked_size); |
| sec->reloc_done = 0; |
| |
| bfd_link_hash_table_free (abfd, link_info.hash); |
| |
| return contents; |
| } |