DT_GNU_HASH latest patches

[Nick Clifton]

Hi Jakub,

> 2006-07-07  Jakub Jelinek  <jakub@redhat.com>
> 
> include/
> 	* bfdlink.h (struct bfd_link_info): Add emit_hash and
> 	emit_gnu_hash bitfields.
> include/elf/
> 	* common.h (SHT_GNU_HASH, DT_GNU_HASH): Define.
> ld/
> 	* scripttempl/elf.sc: Add .gnu.hash section.
> 	* emultempl/elf32.em (OPTION_HASH_STYLE): Define.
> 	(gld${EMULATION_NAME}_add_options): Register --hash-style option.
> 	(gld${EMULATION_NAME}_handle_option): Handle it.
> 	(gld${EMULATION_NAME}_list_options): Document it.
> 	* ldmain.c (main): Initialize emit_hash and emit_gnu_hash.
> 	* ld.texinfo: Document --hash-style option.
> bfd/
> 	* elf.c (_bfd_elf_print_private_bfd_data): Handle DT_GNU_HASH.
> 	(bfd_section_from_shdr, elf_fake_sections, assign_section_numbers):
> 	Handle SHT_GNU_HASH.
> 	(special_sections_g): Include .gnu.hash section.
> 	(bfd_elf_gnu_hash): New function.
> 	* elf-bfd.h (bfd_elf_gnu_hash, _bfd_elf_hash_symbol): New prototypes.
> 	(struct elf_backend_data): Add elf_hash_symbol method.
> 	* elflink.c (_bfd_elf_link_create_dynamic_sections): Create .hash
> 	only if info->emit_hash, create .gnu.hash section if
> 	info->emit_gnu_hash.
> 	(struct collect_gnu_hash_codes): New type.
> 	(elf_collect_gnu_hash_codes, elf_renumber_gnu_hash_syms,
> 	_bfd_elf_hash_symbol): New functions.
> 	(compute_bucket_count): Don't compute HASHCODES array, instead add
> 	that and NSYMS as arguments.  Use bed->s->sizeof_hash_entry
> 	instead of bed->s->arch_size / 8.  Fix .hash size estimation.
> 	When not optimizing, use the number of hashed symbols rather than
> 	dynsymcount.
> 	(bfd_elf_size_dynamic_sections): Only add DT_HASH if info->emit_hash,
> 	and ADD DT_GNU_HASH if info->emit_gnu_hash.
> 	(bfd_elf_size_dynsym_hash_dynstr): Size .hash only if info->emit_hash,
> 	adjust compute_bucket_count caller.  Create and populate .gnu.hash
> 	section if info->emit_gnu_hash.
> 	(elf_link_output_extsym): Only populate .hash section if
> 	finfo->hash_sec != NULL.
> 	(bfd_elf_final_link): Adjust assertion.  Handle DT_GNU_HASH.
> 	* elfxx-target.h (elf_backend_hash_symbol): Define if not yet defined.
> 	(elfNN_bed): Add elf_backend_hash_symbol.
> 	* elf64-x86-64.c (elf64_x86_64_hash_symbol): New function.
> 	(elf_backend_hash_symbol): Define.
> 	* elf32-i386.c (elf_i386_hash_symbol): New function.
> 	(elf_backend_hash_symbol): Define.
> binutils/
> 	* readelf.c (get_dynamic_type): Handle DT_GNU_HASH.
> 	(get_section_type_name): Handle SHT_GNU_HASH.
> 	(dynamic_info_DT_GNU_HASH): New variable.
> 	(process_dynamic_section): Handle DT_GNU_HASH.
> 	(process_symbol_table): Print also DT_GNU_HASH histogram.

Approved - please apply.

Cheers
   Nick