/* 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 PARAMS ((struct bfd_link_info * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, bfd * ATTRIBUTE_UNUSED, asection * ATTRIBUTE_UNUSED, bfd_vma ATTRIBUTE_UNUSED)); static boolean simple_dummy_undefined_symbol PARAMS ((struct bfd_link_info * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, bfd * ATTRIBUTE_UNUSED, asection * ATTRIBUTE_UNUSED, bfd_vma ATTRIBUTE_UNUSED, boolean ATTRIBUTE_UNUSED)); static boolean simple_dummy_reloc_overflow PARAMS ((struct bfd_link_info * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, bfd_vma ATTRIBUTE_UNUSED, bfd * ATTRIBUTE_UNUSED, asection * ATTRIBUTE_UNUSED, bfd_vma ATTRIBUTE_UNUSED)); static boolean simple_dummy_reloc_dangerous PARAMS ((struct bfd_link_info * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, bfd * ATTRIBUTE_UNUSED, asection * ATTRIBUTE_UNUSED, bfd_vma ATTRIBUTE_UNUSED)); static boolean simple_dummy_unattached_reloc PARAMS ((struct bfd_link_info * ATTRIBUTE_UNUSED, const char * ATTRIBUTE_UNUSED, bfd * ATTRIBUTE_UNUSED, asection * ATTRIBUTE_UNUSED, bfd_vma ATTRIBUTE_UNUSED)); bfd_byte * bfd_simple_get_relocated_section_contents PARAMS ((bfd *, asection *, bfd_byte *)); static boolean simple_dummy_warning (link_info, warning, symbol, abfd, section, address) struct bfd_link_info *link_info; const char *warning; const char *symbol; bfd *abfd; asection *section; bfd_vma address; { return true; } static boolean simple_dummy_undefined_symbol (link_info, name, abfd, section, address, fatal) struct bfd_link_info *link_info; const char *name; bfd *abfd; asection *section; bfd_vma address; boolean fatal; { return true; } static boolean simple_dummy_reloc_overflow (link_info, name, reloc_name, addend, abfd, section, address) struct bfd_link_info *link_info; const char *name; const char *reloc_name; bfd_vma addend; bfd *abfd; asection *section; bfd_vma address; { return true; } static boolean simple_dummy_reloc_dangerous (link_info, message, abfd, section, address) struct bfd_link_info *link_info; const char *message; bfd *abfd; asection *section; bfd_vma address; { return true; } static boolean simple_dummy_unattached_reloc (link_info, name, abfd, section, address) struct bfd_link_info *link_info; const char *name; bfd *abfd; asection *section; bfd_vma address; { 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 (abfd, sec, outbuf) 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; }