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.
ld/testsuite/
	* ld-powerpc/tlsso32.r: Adjust.
	* ld-powerpc/tlsso32.d: Adjust.
	* ld-powerpc/tlsso32.g: Adjust.
	* ld-powerpc/tlsso.r: Adjust.
	* ld-powerpc/tlsso.g: Adjust.
	* ld-powerpc/tlstocso.g: Adjust.

1 files changed, 8 insertions, 0 deletions

diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 72a3044..687f19c 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -1883,6 +1883,14 @@ time it takes the linker to perform its tasks, at the expense of
 increasing the linker's memory requirements.  Similarly reducing this
 value can reduce the memory requirements at the expense of speed.
 
+@kindex --hash-style=@var{style}
+@item --hash-style=@var{style}
+Set the type of linker's hash table(s).  @var{style} can be either
+@code{sysv} for classic ELF @code{.hash} section, @code{gnu} for
+new style GNU @code{.gnu.hash} section or @code{both} for both
+the classic ELF @code{.hash} and new style GNU @code{.gnu.hash}
+hash tables.  The default is @code{sysv}.
+
 @kindex --reduce-memory-overheads
 @item --reduce-memory-overheads
 This option reduces memory requirements at ld runtime, at the expense of