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Hi, Here is the total rewrite of STT_GNU_IFUNC support with R_*_IRELATIVE for i386 and x86-64 on shared library and static/dynamic executables together with a modified glibc. OK for trunk? Thanks. -- H.J. bfd/ 2009-05-28 H.J. Lu <hongjiu.lu@intel.com> * elf-bfd.h (struct bfd_elf_section_data): Remove indirect_relocs. (_bfd_elf_make_ifunc_reloc_section): Removed. (_bfd_elf_is_ifunc_symbol): Likewise. (_bfd_elf_create_static_ifunc_sections): New. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Return TRUE for STT_GNU_IFUNC symbol. * elf32-i386.c (elf_howto_table): Add R_386_IRELATIVE. (elf_i386_reloc_type_lookup): Likewise. (R_386_tls): Removed. (R_386_irelative): New. (R_386_vt_offset): Updated. (elf_i386_rtype_to_howto): Likewise. (elf_i386_link_hash_table): Add igotplt, iplt and irelplt. (elf_i386_link_hash_table_create): Initialize igotplt, iplt and irelplt. (elf_i386_check_relocs): Call _bfd_elf_create_static_ifunc_sections instead of _bfd_elf_make_ifunc_reloc_section. Set up igotplt, iplt and irelplt. (allocate_dynrelocs): Use .iplt, .igot.plt and .rel.iplt sections for STT_GNU_IFUNC symbols in static executable. Discard space for relocations against forced local STT_GNU_IFUNC symbols for not building shared library. Don't use indirect_relocs. (elf_i386_size_dynamic_sections): Set up .iplt and .igot.plt sections. (elf_i386_relocate_section): If an STT_GNU_IFUNC symbol is defined in executable, resolve it to its PLT entry. Remove check for STT_GNU_IFUNC symbols. (elf_i386_finish_dynamic_symbol): When building a static executable, use .iplt, .igot.plt and .rel.iplt sections for STT_GNU_IFUNC symbols. Generate R_386_IRELATIVE relocation for locally defined STT_GNU_IFUNC symbol. * elf64-x86-64.c (x86_64_elf_howto): Add R_X86_64_IRELATIVE. (x86_64_reloc_map): Likewise. (R_X86_64_standard): Updated. (elf64_x86_64_link_hash_table): Add igotplt, iplt and irelplt. (elf64_x86_64_link_hash_table_create): Initialize igotplt, iplt and irelplt. (elf64_x86_64_check_relocs): Call _bfd_elf_create_ifunc_sections instead of _bfd_elf_make_ifunc_reloc_section. Set up igotplt, iplt and irelplt. (allocate_dynrelocs): Use .iplt, .igot.plt and .rela.iplt sections for STT_GNU_IFUNC symbols in static executable. Discard space for relocations against forced local STT_GNU_IFUNC symbols for not building shared library. Don't use indirect_relocs. (elf64_x86_64_size_dynamic_sections): Set up .iplt and .igot.plt sections. (elf64_x86_64_relocate_section): If an STT_GNU_IFUNC symbol is defined in executable, resolve it to its PLT entry and make sure it is reachable. Remove check for STT_GNU_IFUNC symbols. (elf64_x86_64_finish_dynamic_symbol): When building a static executable, use .iplt, .igot.plt and .rela.iplt sections for STT_GNU_IFUNC symbols. Generate R_X86_64_IRELATIVE relocation for locally defined STT_GNU_IFUNC symbol. * elflink.c (_bfd_elf_adjust_dynamic_symbol): Move STT_GNU_IFUNC symbol check to ... (elf_link_add_object_symbols): Here. (_bfd_elf_symbol_refs_local_p): Return FALSE on STT_GNU_IFUNC symbol. (_bfd_elf_link_hash_hide_symbol): Don't clean plt on STT_GNU_IFUNC symbol. (elf_link_output_extsym): Always call elf_backend_finish_dynamic_symbol for STT_GNU_IFUNC symbol. (IFUNC_INFIX): Removed. (get_ifunc_reloc_section_name): Likewise. (_bfd_elf_make_ifunc_reloc_section): Likewise. (_bfd_elf_is_ifunc_symbol): Likewise. (_bfd_elf_create_static_ifunc_sections): New. * reloc.c (BFD_RELOC_386_IRELATIVE): New. (BFD_RELOC_X86_64_IRELATIVE): Likewise. * bfd-in2.h: Regenerated. * libbfd.h: Likewise. include/elf/ 2009-05-28 H.J. Lu <hongjiu.lu@intel.com> * i386.h (R_386_IRELATIVE): New. * x86-64.h (R_X86_64_IRELATIVE): Likewise. ld/ 2009-05-28 H.J. Lu <hongjiu.lu@intel.com> * scripttempl/elf.sc (PLT): Add "*(.iplt)". (GOT): Add "*(.igot.plt)a" and "*(.igot)". (GOTPLT): Add "*(.igot)". (__rel_iplt_start): New. (__rel_iplt_end): Likewise. (__rela_iplt_start): Likewise. (__rela_iplt_end): Likewise. ld/testsuite/ 2009-05-28 H.J. Lu <hongjiu.lu@intel.com> * ld-ifunc/ifunc.exp (contains_irelative_reloc): New. Use it on executable and shared library. Run *.d. * ld-ifunc/lib.c: Add a hidden alias, __GI_library_func2, for library_func2. (library_func): New. * ld-ifunc/ifunc-1-x86.d: New. * ld-ifunc/ifunc-1-x86.s: Likewise.
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binutils-ifunc-3.patch
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