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Diffstat (limited to 'bfd/ChangeLog')
| -rw-r--r-- | bfd/ChangeLog | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index d008556..0d2dd49 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,106 @@ +Tue Jul 26 11:04:00 1994 Ian Lance Taylor (ian@sanguine.cygnus.com) + + Add support for creating shared libraries under i386 ELF and SPARC + ELF. Based on patches by Eric Youngdale <ericy@cais.cais.com>. + * libelf.h (struct elf_link_hash_entry): Remove copy_offset field. + Add got_offset and plt_offset fields. + (ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE): Don't define. + (ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE): Don't define. + (ELF_LINK_HASH_NEEDS_COPY): Define. + (struct elf_backend_data): Add check_relocs field. + (struct bfd_elf_section_data): Change relocs from PTR to + Elf_Internal_Rela *. + (struct elf_obj_tdata): Add local_got_offsets field. + (elf_local_got_offsets): Define accessor macro. + (bfd_elf32_link_create_dynamic_sections): Declare. + (bfd_elf32_link_record_dynamic_symbol): Declare. + (bfd_elf64_link_create_dynamic_sections): Declare. + (bfd_elf64_link_record_dynamic_symbol): Declare. + * elfcode.h (elf_slurp_reloc_table): Don't use the section data + relocs field. + (elf_link_record_dynamic_symbol): Make globally visible. Use + macro to rename to NAME(bfd_elf,link_record_dynamic_symbol). + (elf_link_add_object_symbols): If creating a shared library, put + make all local symbols dynamic. Don't bother with the + DYNAMIC_MULTIPLE flags. Call the check_relocs backend function if + it is defined. + (elf_link_create_dynamic_sections): Make globally visible. Use + macro to rename to NAME(bfd_elf,link_create_dynamic_sections). If + creating a shared library, make sure that _DYNAMIC is added as a + dynamic symbol. + (elf_link_read_relocs): New function. + (NAME(bfd_elf,record_link_assignment)): If creating a shared + library, always create symbols, and always make them dynamic. + (elf_bfd_final_link): Permit creation of shared libraries. + (elf_link_input_bfd): Use elf_link_read_relocs to get the relocs. + * elf.c (_bfd_elf_link_hash_newfunc): Don't initialize + copy_offset. Initialize got_offset and plt_offset. + * elf32-target.h (elf_backend_check_relocs): Define as 0 if not + defined. + (elf32_bed): Initialize check_relocs field. + * elf64-target.h (elf_backend_check_relocs): Define as 0 if not + defined. + (elf64_bed): Initialize check_relocs field. + * elf32-i386.c (elf_howto_table): Change R_386_PLT32 and + R_386_GOTPC to be pc_relative and pcrel_offset. + (elf_i386_pic_plt0_entry): Define. + (elf_i386_pic_plt_entry): Define. + (elf_i386_create_dynamic_sections): Create a .got.plt section, and + define _GLOBAL_OFFSET_TABLE_ at the start of it. If creating a + shared library, make sure that _GLOBAL_OFFSET_TABLE_ is added as a + dynamic symbol. Don't create .rel.bss if creating a shared + library. + (elf_i386_check_relocs): New function. + (elf_i386_adjust_dynamic_symbol): Don't make a PLT entry if the + symbol already has one. When making a PLT entry, set plt_offset. + Don't create a copy reloc when creating a shared library. Don't + set copy_offset, just set ELF_LINK_HASH_NEEDS_COPY. + (elf_i386_allocate_dynamic_section): Remove. + (elf_i386_size_dynamic_sections): Look through all the sections + rather than assuming we know their names. Remove any empty reloc + or plt sections. Only add a DT_DEBUG entry if not creating a + shared library. Only add a DT_PLTGOT entry if there is a PLT. + Add a DT_TEXTREL entry if required. + (elf_i386_relocate_section): Permit undefined symbols when + creating a shared library. Handle the special relocation types + specially. + (elf_i386_finish_dynamic_symbol): Create a PLT entry if plt_offset + is set. If creating a shared library, produce a PIC PLT entry. + Only mark a PLT symbol as undefined if it was not defined by a + regular object file. Create a GOT entry if got_offset is set. + Create a copy reloc if ELF_LINK_HASH_NEEDS_COPY is set. + (elf_i386_finish_dynamic_sections): Change the handling of + DT_RELSZ to simply subtract out the size of .rel.plt. If creating + a shared library, produce PIC PLT code. + (elf_backend_check_relocs): Define. + * elf32-sparc.c (elf_sparc_howto_table): Change R_SPARC_GOT10, + R_SPARC_GOT22, and R_SPARC_PC10 to not warn about reloc overflow. + (elf32_sparc_create_dynamic_sections): If creating a shared + library, make sure that _GLOBAL_OFFSET_TABLE_ is added as a + dynamic symbol, and set the type to STT_OBJECT. Likewise for + _PROCEDURE_LINKAGE_TABLE_. Don't create .rel.bss if creating a + shared library. + (elf32_sparc_check_relocs): New function. + (elf32_sparc_adjust_dynamic_symbol): Don't make a PLT entry if the + symbol already has one. When making a PLT entry, set plt_offset. + Don't create a copy reloc when creating a shared library. Don't + set copy_offset, just set ELF_LINK_HASH_NEEDS_COPY. + (elf32_sparc_allocate_dynamic_section): Remove. + (elf32_sparc_size_dynamic_sections): Look through all the sections + rather than assuming we know their names. Only add a DT_DEBUG + entry if not creating a shared library. Add a DT_TEXTREL entry if + required. + (elf32_sparc_relocate_section): Permit undefined symbols when + creating a shared library. Handle the special relocation types + specially. + (elf32_sparc_finish_dynamic_symbol): Create a PLT entry if plt_offset + is set. Only mark a PLT symbol as undefined if it was not defined + by a regular object file. Create a GOT entry if got_offset is + set. Create a copy reloc if ELF_LINK_HASH_NEEDS_COPY is set. + (elf32_sparc_finish_dynamic_sections): Store dynobj in a local + variable. + (elf_backend_check_relocs): Define. + Mon Jul 25 12:21:07 1994 Stan Shebs (shebs@andros.cygnus.com) * configure.in (pc532mach_vec): Change to pc532machaout_vec. |