/* simple.c -- BFD simple client routines
- Copyright 2002
+ Copyright 2002, 2003, 2004
Free Software Foundation, Inc.
Contributed by MontaVista Software, Inc.
#include "libbfd.h"
#include "bfdlink.h"
-static boolean simple_dummy_warning
- PARAMS ((struct bfd_link_info *, const char *, const char *, bfd *,
- asection *, bfd_vma));
-
-static boolean simple_dummy_undefined_symbol
- PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *,
- bfd_vma, boolean));
-
-static boolean simple_dummy_reloc_overflow
- PARAMS ((struct bfd_link_info *, const char *, const char *, bfd_vma,
- bfd *, asection *, bfd_vma));
-
-static boolean simple_dummy_reloc_dangerous
- PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
-
-static boolean simple_dummy_unattached_reloc
- PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
+static bfd_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;
+}
-bfd_byte * bfd_simple_get_relocated_section_contents
- PARAMS ((bfd *, asection *, bfd_byte *));
+static bfd_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,
+ bfd_boolean fatal ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
-static 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;
+static bfd_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;
+ return TRUE;
}
-static 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;
- boolean fatal ATTRIBUTE_UNUSED;
+static bfd_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;
+ return TRUE;
}
-static 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;
+static bfd_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;
+ return TRUE;
}
-static 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;
+struct saved_output_info
{
- return true;
+ bfd_vma offset;
+ asection *section;
+};
+
+static void
+simple_save_output_info (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *section,
+ void *ptr)
+{
+ struct saved_output_info *output_info = ptr;
+ output_info[section->index].offset = section->output_offset;
+ output_info[section->index].section = section->output_section;
+ section->output_offset = 0;
+ section->output_section = section;
}
-static 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;
+static void
+simple_restore_output_info (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *section,
+ void *ptr)
{
- return true;
+ struct saved_output_info *output_info = ptr;
+ section->output_offset = output_info[section->index].offset;
+ section->output_section = output_info[section->index].section;
}
/*
bfd_simple_relocate_secton
SYNOPSIS
- bfd_byte *bfd_simple_get_relocated_section_contents (bfd *abfd, asection *sec, bfd_byte *outbuf);
+ bfd_byte *bfd_simple_get_relocated_section_contents
+ (bfd *abfd, asection *sec, bfd_byte *outbuf, asymbol **symbol_table);
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}
+ Returns the relocated contents of section @var{sec}. The symbols in
+ @var{symbol_table} will be used, or the symbols from @var{abfd} if
+ @var{symbol_table} is NULL. The output offsets for all sections will
+ be temporarily reset to 0. 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
*/
bfd_byte *
-bfd_simple_get_relocated_section_contents (abfd, sec, outbuf)
- bfd *abfd;
- asection *sec;
- bfd_byte *outbuf;
+bfd_simple_get_relocated_section_contents (bfd *abfd,
+ asection *sec,
+ bfd_byte *outbuf,
+ asymbol **symbol_table)
{
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;
+ int storage_needed;
+ void *saved_offsets;
+ bfd_size_type old_cooked_size;
if (! (sec->flags & SEC_RELOC))
{
memset (&link_info, 0, sizeof (link_info));
link_info.input_bfds = abfd;
- link_info.hash = bfd_link_hash_table_create (abfd);
+ link_info.hash = _bfd_generic_link_hash_table_create (abfd);
link_info.callbacks = &callbacks;
callbacks.warning = simple_dummy_warning;
callbacks.undefined_symbol = simple_dummy_undefined_symbol;
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);
+ /* The sections in ABFD may already have output sections and offsets set.
+ Because this function is primarily for debug sections, and GCC uses the
+ knowledge that debug sections will generally have VMA 0 when emitting
+ relocations between DWARF-2 sections (which are supposed to be
+ section-relative offsets anyway), we need to reset the output offsets
+ to zero. We also need to arrange for section->output_section->vma plus
+ section->output_offset to equal section->vma, which we do by setting
+ section->output_section to point back to section. Save the original
+ output offset and output section to restore later. */
+ saved_offsets = malloc (sizeof (struct saved_output_info)
+ * abfd->section_count);
+ if (saved_offsets == NULL)
+ {
+ if (data)
+ free (data);
+ return NULL;
+ }
+ bfd_map_over_sections (abfd, simple_save_output_info, saved_offsets);
+
+ if (symbol_table == NULL)
+ {
+ _bfd_generic_link_add_symbols (abfd, &link_info);
+
+ storage_needed = bfd_get_symtab_upper_bound (abfd);
+ symbol_table = bfd_malloc (storage_needed);
+ bfd_canonicalize_symtab (abfd, symbol_table);
+ }
+ else
+ storage_needed = 0;
+
+ /* This function might be called before _cooked_size has been set, and
+ bfd_perform_relocation needs _cooked_size to be valid. */
+ old_cooked_size = sec->_cooked_size;
+ if (old_cooked_size == 0)
+ sec->_cooked_size = sec->_raw_size;
contents = bfd_get_relocated_section_contents (abfd,
&link_info,
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;
+#if 0
+ /* NOTE: cagney/2003-04-05: This free, which was introduced on
+ 2003-03-31 to stop a memory leak, caused a memory corruption
+ between GDB and BFD. The problem, which is stabs specific, can
+ be identified by a bunch of failures in relocate.exp vis:
+
+ gdb.base/relocate.exp: get address of static_bar
+
+ Details of the problem can be found on the binutils@ mailing
+ list, see the discussion thread: "gdb.mi/mi-cli.exp failures". */
+ if (storage_needed != 0)
+ free (symbol_table);
+#endif
+
+ sec->_cooked_size = old_cooked_size;
+ bfd_map_over_sections (abfd, simple_restore_output_info, saved_offsets);
+ free (saved_offsets);
- bfd_link_hash_table_free (abfd, link_info.hash);
+ _bfd_generic_link_hash_table_free (link_info.hash);
return contents;
}
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