/* i370-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
Hacked by Linas Vepstas for i370 linas@linas.org
Elf_Internal_Shdr *shdr,
asection *asect)
{
- if ((asect->flags & SEC_EXCLUDE) != 0)
+ if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
shdr->sh_flags |= SHF_EXCLUDE;
if ((asect->flags & SEC_SORT_ENTRIES) != 0)
if (info->shared)
return TRUE;
+ if (h->size == 0)
+ {
+ (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
+ h->root.root.string);
+ return TRUE;
+ }
+
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
#ifdef DEBUG
fprintf (stderr,
- "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n",
+ "i370_elf_adjust_dynindx called, h->dynindx = %ld, *cp = %d\n",
h->dynindx, *cp);
#endif
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char *name;
- bfd_boolean strip;
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
/* It's OK to base decisions on the section name, because none
of the dynobj section names depend upon the input files. */
name = bfd_get_section_name (dynobj, s);
- strip = FALSE;
if (strcmp (name, ".plt") == 0)
{
- if (s->size == 0)
- /* Strip this section if we don't need it; see the
- comment below. */
- strip = TRUE;
- else
- /* Remember whether there is a PLT. */
- plt = TRUE;
+ /* Remember whether there is a PLT. */
+ plt = s->size != 0;
}
- else if (strncmp (name, ".rela", 5) == 0)
+ else if (CONST_STRNEQ (name, ".rela"))
{
- if (s->size == 0)
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- strip = TRUE;
- else
+ if (s->size != 0)
{
asection *target;
const char *outname;
}
else if (strcmp (name, ".got") != 0
&& strcmp (name, ".sdata") != 0
- && strcmp (name, ".sdata2") != 0)
- /* It's not one of our sections, so don't allocate space. */
- continue;
+ && strcmp (name, ".sdata2") != 0
+ && strcmp (name, ".dynbss") != 0
+ && strcmp (name, ".dynsbss") != 0)
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
- if (strip)
+ if (s->size == 0)
{
- if (!bfd_section_removed_from_list (s->output_section->owner,
- s->output_section))
- {
- bfd_section_list_remove (s->output_section->owner,
- s->output_section);
- --s->output_section->owner->section_count;
- }
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ s->flags |= SEC_EXCLUDE;
continue;
}
+
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
/* Allocate memory for the section contents. */
s->contents = bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL && s->size != 0)
+ if (s->contents == NULL)
return FALSE;
}
if (name == NULL)
return FALSE;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ BFD_ASSERT (CONST_STRNEQ (name, ".rela")
&& strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0);
sreloc = bfd_get_section_by_name (dynobj, name);
}
}
- if (sgot)
+ if (sgot && sgot->size != 0)
{
unsigned char *contents = sgot->contents;
bfd_vma *local_got_offsets;
bfd_boolean ret = TRUE;
- if (info->relocatable)
- return TRUE;
-
#ifdef DEBUG
_bfd_error_handler ("i370_elf_relocate_section called for %B section %A, %ld relocations%s",
input_bfd, input_section,
howto = i370_elf_howto_table[(int) r_type];
r_symndx = ELF32_R_SYM (rel->r_info);
+ relocation = 0;
if (r_symndx < symtab_hdr->sh_info)
{
/* In these cases, we don't need the relocation
value. We check specially because in some
obscure cases sec->output_section will be NULL. */
- relocation = 0;
+ ;
else
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
+ ;
else if (info->unresolved_syms_in_objects == RM_IGNORE
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- relocation = 0;
- else
+ ;
+ else if (!info->relocatable)
{
if ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
ret = FALSE;
continue;
}
- relocation = 0;
}
}
+ if (sec != NULL && elf_discarded_section (sec))
+ {
+ /* For relocs against symbols from removed linkonce sections,
+ or sections discarded by a linker script, we just want the
+ section contents zeroed. Avoid any special processing. */
+ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
+ }
+
+ if (info->relocatable)
+ continue;
+
switch ((int) r_type)
{
default:
if (name == NULL)
return FALSE;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ BFD_ASSERT (CONST_STRNEQ (name, ".rela")
&& strcmp (bfd_get_section_name (input_bfd,
input_section),
name + 5) == 0);
{
asection *osec;
+ /* We are turning this relocation into one
+ against a section symbol. It would be
+ proper to subtract the symbol's value,
+ osec->vma, from the emitted reloc addend,
+ but ld.so expects buggy relocs. */
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
- BFD_ASSERT(indx > 0);
+ if (indx == 0)
+ {
+ struct elf_link_hash_table *htab;
+ htab = elf_hash_table (info);
+ osec = htab->text_index_section;
+ indx = elf_section_data (osec)->dynindx;
+ }
+ BFD_ASSERT (indx != 0);
#ifdef DEBUG
if (indx <= 0)
{
- printf ("indx=%d section=%s flags=%08x name=%s\n",
+ printf ("indx=%ld section=%s flags=%08x name=%s\n",
indx, osec->name, osec->flags,
h->root.root.string);
}
link glibc's ld.so without errors. */
#define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections
#define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections
+#define elf_backend_init_index_section _bfd_elf_init_1_index_section
#define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections
#define elf_backend_fake_sections i370_elf_fake_sections
#define elf_backend_section_from_shdr i370_elf_section_from_shdr
return 1;
}
-/* We need to define these at least as no-ops to link glibc ld.so. */
-
-#define elf_backend_add_symbol_hook \
- (bfd_boolean (*) \
- (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, \
- const char **, flagword *, asection **, bfd_vma *)) i370_noop
#define elf_backend_finish_dynamic_symbol \
(bfd_boolean (*) \
(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \
Elf_Internal_Sym *)) i370_noop
-#define elf_backend_additional_program_headers \
- (int (*) (bfd *)) i370_noop
-#define elf_backend_modify_segment_map \
- (bfd_boolean (*) (bfd *, struct bfd_link_info *)) i370_noop
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff