Re: [PATCH] Support -z combreloc in binutils (take 2)

[Nick Clifton <nickc@cambridge.redhat.com>]

Hi Jakub,

> 2001-08-22  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* elf-bfd.h (enum elf_reloc_type_class): New.
> 	(struct elf_backend_data): Add elf_backend_reloc_type_class.
> 	(_bfd_elf_reloc_type_class): New.
> 	* elfxx-target.h (elf_backend_reloc_type_class): Define.
> 	(elfNN_bed): Add elf_backend_reloc_type_class.
> 	* elf.c (_bfd_elf_reloc_type_class): New.
> 	* elf32-i386.c (elf_i386_check_relocs): Set DF_TEXTREL if the reloc
> 	is against read-only section.
> 	(elf_i386_size_dynamic_sections): Use DF_TEXTREL flag instead of
> 	looking up section names for DT_TEXTREL.
> 	(elf_i386_reloc_type_class): New.
> 	(elf_backend_reloc_type_class): Define.
> 	* elf32-sparc.c (elf32_sparc_check_relocs): Set DF_TEXTREL if the
> 	reloc is against read-only section.
> 	(elf32_sparc_size_dynamic_sections): Use DF_TEXTREL flag instead of
> 	looking up section names for DT_TEXTREL.
> 	(elf32_sparc_reloc_type_class): New.
> 	(elf_backend_reloc_type_class): Define.
> 	* elf64-sparc.c (sparc64_elf_check_relocs): Set DF_TEXTREL if the
> 	reloc is against read-only section.
> 	(sparc64_elf_size_dynamic_sections): Use DF_TEXTREL flag instead of
> 	looking up section names for DT_TEXTREL.
> 	(sparc64_elf_reloc_type_class): New.
> 	(elf_backend_reloc_type_class): Define.
> 	* elfxx-ia64.c (struct elfNN_ia64_link_hash_table): Add reltext field.
> 	(get_reloc_section): Set DF_TEXTREL if the reloc is against read-only
> 	section.
> 	(elfNN_ia64_size_dynamic_sections): Use ia64_info->reltext flag
> 	instead of looking up section names for DT_TEXTREL.
> 	(elfNN_ia64_reloc_type_class): New.
> 	(elf_backend_reloc_type_class): Define.
> 	* elflink.h (size_dynamic_sections): Add spare DT_NULL tags.
> 	(struct elf_link_sort_rela): New.
> 	(elf_link_sort_cmp1, elf_link_sort_cmp2, elf_link_sort_relocs): New.
> 	(elf_bfd_final_link): Call elf_link_sort_relocs.
> 	Convert one spare DT_NULL into DT_RELCOUNT resp. DT_RELACOUNT if
> 	necessary.
> 
> 	* bfdlink.h (struct bfd_link_info): Add combreloc and
> 	spare_dynamic_tags fields.
> 
> 	* emultempl/elf32.em (place_orphan): Place orphan .rel* sections
> 	into .rel.dyn resp. .rela.dyn if combreloc.
> 	(get_script): If .x linker script is equal to .xn, only put it
> 	once into the binary.
> 	Add .xc and .xsc scripts.
> 	(parse_args): Handle -z combreloc and -z nocombreloc.
> 	* scripttempl/elf.sc (.rela.sbss): Fix a typo.
> 	For .xc and .xsc scripts put all .rel* or .rela* input sections
> 	but .rel*.plt and PLT-like sections into .rel.dyn resp. .rela.dyn.
> 	* genscripts.sh (GENERATE_COMBRELOC_SCRIPT): Set if SCRIPT_NAME
> 	is elf.
> 	Strip trailing whitespace from script.
> 	Generate .xc and .xsc scripts if requested.
> 	* ldmain.c (main): Initialize link_info.combreloc and
> 	link_info.spare_dynamic_tags.
> 	* lexsup.c (OPTION_SPARE_DYNAMIC_TAGS): Define.
> 	(ld_options): Add --spare-dynamic-tags option.
> 	(parse_args): Likewise.
> 	* ld.texinfo: Document -z combreloc and -z nocombreloc.
> 	* ldint.texinfo: Document .xc and .xsc linker scripts.
> 	* NEWS: Add notes about -z combreloc and SHF_MERGE.

Approved.  Please check in at your leisure!

Cheers
        Nick