212 lines
6.7 KiB
C
212 lines
6.7 KiB
C
/* 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 bfd_boolean simple_dummy_warning
|
|
PARAMS ((struct bfd_link_info *, const char *, const char *, bfd *,
|
|
asection *, bfd_vma));
|
|
|
|
static bfd_boolean simple_dummy_undefined_symbol
|
|
PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *,
|
|
bfd_vma, bfd_boolean));
|
|
|
|
static bfd_boolean simple_dummy_reloc_overflow
|
|
PARAMS ((struct bfd_link_info *, const char *, const char *, bfd_vma,
|
|
bfd *, asection *, bfd_vma));
|
|
|
|
static bfd_boolean simple_dummy_reloc_dangerous
|
|
PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
|
|
|
|
static bfd_boolean simple_dummy_unattached_reloc
|
|
PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
|
|
|
|
bfd_byte * bfd_simple_get_relocated_section_contents
|
|
PARAMS ((bfd *, asection *, bfd_byte *));
|
|
|
|
static bfd_boolean
|
|
simple_dummy_warning (link_info, warning, symbol, abfd, section, address)
|
|
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 bfd_boolean
|
|
simple_dummy_undefined_symbol (link_info, name, abfd, section, address, fatal)
|
|
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;
|
|
bfd_boolean fatal ATTRIBUTE_UNUSED;
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
simple_dummy_reloc_overflow (link_info, name, reloc_name, addend, abfd,
|
|
section, address)
|
|
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 bfd_boolean
|
|
simple_dummy_reloc_dangerous (link_info, message, abfd, section, address)
|
|
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 bfd_boolean
|
|
simple_dummy_unattached_reloc (link_info, name, abfd, section, address)
|
|
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 (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;
|
|
|
|
if (! (sec->flags & SEC_RELOC))
|
|
{
|
|
bfd_size_type size = bfd_section_size (abfd, sec);
|
|
|
|
if (outbuf == NULL)
|
|
contents = bfd_malloc (size);
|
|
else
|
|
contents = outbuf;
|
|
|
|
if (contents)
|
|
bfd_get_section_contents (abfd, sec, contents, 0, size);
|
|
|
|
return contents;
|
|
}
|
|
|
|
/* 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;
|
|
}
|