/* SuperH SH64-specific support for 64-bit ELF
- Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006
+ Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#define SH64_ELF64
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
return NULL;
}
+static reloc_howto_type *
+sh_elf64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (sh_elf64_howto_table) / sizeof (sh_elf64_howto_table[0]);
+ i++)
+ if (sh_elf64_howto_table[i].name != NULL
+ && strcasecmp (sh_elf64_howto_table[i].name, r_name) == 0)
+ return &sh_elf64_howto_table[i];
+
+ return NULL;
+}
+
/* Given an ELF reloc, fill in the howto field of a relent.
See sh_elf_info_to_howto in elf32-sh.c for the original. */
howto = sh_elf64_howto_table + r_type;
- /* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
+ relocation = 0;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
_("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
input_bfd, input_section, rel->r_offset));
- if (info->relocatable)
+ if (sec != NULL && elf_discarded_section (sec))
+ /* Handled below. */
+ ;
+ else if (info->relocatable)
{
/* This is a relocatable link. We don't have to change
anything, unless the reloc is against a section symbol,
in which case we have to adjust according to where the
section symbol winds up in the output section. */
- sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
goto final_link_relocate;
{
/* ??? Could we use the RELOC_FOR_GLOBAL_SYMBOL macro here ? */
- /* Section symbols are never (?) placed in the hash table, so
- we can just ignore hash relocations when creating a
- relocatable object file. */
- if (info->relocatable)
- continue;
-
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
|| (sec->output_section == NULL
&& ((input_section->flags & SEC_DEBUGGING) != 0
&& h->def_dynamic)))
- relocation = 0;
- else if (sec->output_section == NULL)
+ ;
+ else if (sec->output_section != NULL)
+ relocation = ((h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset)
+ /* A STO_SH5_ISA32 causes a "bitor 1" to the
+ symbol value, unless we've seen
+ STT_DATALABEL on the way to it. */
+ | ((h->other & STO_SH5_ISA32) != 0
+ && ! seen_stt_datalabel));
+ else if (!info->relocatable)
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
(long) rel->r_offset,
howto->name,
h->root.root.string);
- relocation = 0;
}
- else
- relocation = ((h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset)
- /* A STO_SH5_ISA32 causes a "bitor 1" to the
- symbol value, unless we've seen
- STT_DATALABEL on the way to it. */
- | ((h->other & STO_SH5_ISA32) != 0
- && ! seen_stt_datalabel));
}
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,
(info->unresolved_syms_in_objects == RM_GENERATE_ERROR
|| ELF_ST_VISIBILITY (h->other)))))
return FALSE;
- 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;
+
disp = (relocation
- input_section->output_section->vma
- input_section->output_offset
if (sreloc == NULL)
{
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- elf_elfheader (input_bfd)->e_shstrndx,
- elf_section_data (input_section)->rel_hdr.sh_name));
- if (name == NULL)
+ sreloc = _bfd_elf_get_dynamic_reloc_section
+ (input_bfd, input_section, /*rela?*/ TRUE);
+ if (sreloc == NULL)
return FALSE;
-
- BFD_ASSERT (CONST_STRNEQ (name, ".rela")
- && strcmp (bfd_get_section_name (input_bfd,
- input_section),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- BFD_ASSERT (sreloc != NULL);
}
skip = FALSE;
if (isymp->st_shndx == SHN_UNDEF)
isec = bfd_und_section_ptr;
- else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE)
- isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
else if (isymp->st_shndx == SHN_ABS)
isec = bfd_abs_section_ptr;
else if (isymp->st_shndx == SHN_COMMON)
isec = bfd_com_section_ptr;
else
- {
- /* Who knows? */
- isec = NULL;
- }
+ isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
*secpp = isec;
}
}
}
+ /* Copy object attributes. */
+ _bfd_elf_copy_obj_attributes (ibfd, obfd);
+
return sh_elf64_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
}
asection *sec, const Elf_Internal_Rela *relocs)
{
Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+ struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
bfd *dynobj;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
- sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf64_External_Sym);
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
dynobj = elf_hash_table (info)->dynobj;
local_got_offsets = elf_local_got_offsets (abfd);
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
case R_SH_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ BFD_ASSERT (h != NULL);
+ if (h != NULL
+ && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
section in dynobj and make room for this reloc. */
if (sreloc == NULL)
{
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return FALSE;
+ sreloc = _bfd_elf_make_dynamic_reloc_section
+ (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
- 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 (sreloc == NULL)
- {
- flagword flags;
-
- flags = (SEC_HAS_CONTENTS | SEC_READONLY
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- if ((sec->flags & SEC_ALLOC) != 0)
- flags |= SEC_ALLOC | SEC_LOAD;
- sreloc = bfd_make_section_with_flags (dynobj,
- name,
- flags);
- if (sreloc == NULL
- || ! bfd_set_section_alignment (dynobj, sreloc, 2))
- return FALSE;
- }
+ return FALSE;
}
sreloc->size += sizeof (Elf64_External_Rela);
we don't need to look up and make sure to emit the main symbol for each
DataLabel symbol. */
-static bfd_boolean
+static int
sh64_elf64_link_output_symbol_hook (struct bfd_link_info *info,
const char *cname,
Elf_Internal_Sym *sym,
name[strlen (name) - strlen (DATALABEL_SUFFIX)] = 0;
}
- return TRUE;
+ return 1;
}
/* Set bit 0 on the entry address; it always points to SHmedia code. This
{
bfd *dynobj;
asection *s;
- unsigned int power_of_two;
dynobj = elf_hash_table (info)->dynobj;
h->needs_copy = 1;
}
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 3)
- power_of_two = 3;
-
- /* Apply the required alignment. */
- s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
- {
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return FALSE;
- }
-
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->size;
-
- /* Increment the section size to make room for the symbol. */
- s->size += h->size;
-
- return TRUE;
+ return _bfd_elf_adjust_dynamic_copy (h, s);
}
/* This function is called via sh_elf_link_hash_traverse if we are
#define elf_symbol_leading_char '_'
#define bfd_elf64_bfd_reloc_type_lookup sh_elf64_reloc_type_lookup
+#define bfd_elf64_bfd_reloc_name_lookup \
+ sh_elf64_reloc_name_lookup
#define elf_info_to_howto sh_elf64_info_to_howto
/* Note: there's no relaxation at present. */
projects / deliverable / binutils-gdb.git / blobdiff