• Nick Clifton's avatar
    Multi-GOT support for m68k. · 7fb9f789
    Nick Clifton authored
            bfd/
    
            * elf32-m68k.c (struct elf_m68k_link_hash_entry: got_entry_key,
            glist): New fields.
            (struct elf_m68k_got_entry_key, struct elf_m68k_got_entry,
            struct elf_m68k_got, struct elf_m68k_bfd2got_entry,
            struct elf_m68k_multi_got): New data structures.
            (struct elf_m68k_link_hash_table: local_gp_p, use_neg_got_offsets_p,
            allow_multigot_p, multi_got_): New fields.
            (elf_m68k_multi_got): New macro.
            (elf_m68k_link_hash_newfunc): Initialize new fields of
            struct elf_m68k_link_hash_entry.
            (elf_m68k_link_hash_table_create): Initialize new fields of
            struct elf_m68k_link_hash_table.
            (elf_m68k_link_hash_table_free): New static function implementing hook.
            (elf_m68k_init_got, elf_m68k_clear_got, elf_m68k_create_empty_got): New
            static functions for struct elf_m68k_got.
            (elf_m68k_init_got_entry_key, elf_m68k_got_entry_hash,
            elf_m68k_got_entry_eq): New static functions for
            struct elf_m68k_got_entry.
            (ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT,
            ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT): New macros.
            (enum elf_m68k_get_entry_howto): New enum.
            (elf_m68k_get_got_entry, elf_m68k_update_got_entry_type,
            elf_m68k_remove_got_entry_type): New static functions for
            struct elf_m68k_got_entry.
            (elf_m68k_add_entry_to_got): New static function.
            (elf_m68k_bfd2got_entry_hash, elf_m68k_bfd2got_entry_eq,
            elf_m68k_bfd2got_entry_del, elf_m68k_get_bfd2got_entry): New static
            functions for struct elf_m68k_bfd2got_entry.
            (struct elf_m68k_can_merge_gots_arg, elf_m68k_can_merge_gots_1,
            elf_m68k_can_merge_gots): New traversal.
            (struct elf_m68k_merge_gots_arg, elf_m68k_merge_gots_1,
            elf_m68k_merge_gots): Ditto.
            (struct elf_m68k_finalize_got_offsets_arg,
            elf_m68k_finalize_got_offsets_1, elf_m68k_finalize_got_offsets): Ditto.
            (struct elf_m68k_partition_multi_got_arg,
            elf_m68k_partition_multi_got_1, elf_m68k_init_symndx2h_1,
            elf_m68k_partition_multi_got): Ditto.
            (elf_m68k_find_got_entry_ptr, elf_m68k_remove_got_entry): New static
            functions.
            (elf_m68k_copy_indirect_symbol): New static function implementing
            a hook.
            (elf_m68k_check_relocs): Update to add entries to multi-GOT.
            (elf_m68k_gc_sweep_hook): Update to remove entries from multi-GOT.
            (elf_m68k_always_size_sections): Assign BFDs to GOTs.
            (elf_m68k_relocate_section): Update to properly handle GOT relocations.
            (elf_m68k_finish_dynamic_symbol): Update to traverse all GOT entries
            of a global symbol.
            (bfd_elf_m68k_set_target_options): New function.
            (bfd_elf32_bfd_link_hash_table_free): Define hook.
            (bfd_elf32_bfd_final_link): Change expansion to bfd_elf_final_link
            to skip generic calculation of GOT offsets.
            (elf_backend_copy_indirect_symbol): Define hook.
    
            * bfd-in.h (bfd_elf_m68k_set_target_options): Declare function.
            * bfd-in2.h: Regenerate.
    
            ld/
    
            * configure.in (--enable-got): New option.  Handle it.
            * configure: Regenerate.
            * config.in: Regenerate.
    
            * emultempl/m68kelf.em: (got_handling_target_default): New shell
            variable.
            (GOT_HANDLING_TARGET_DEFAULT): New macro.
            (GOT_HANDLING_DEFAULT): New macro.  Initialize it from configure
            option if one was given.
            (got_handling): New static variable.
            (elf_m68k_create_output_section_statements): New static function
            implementing hook.
            (PARSE_AND_LIST_PROLOGUE): Define shell variable.
            (OPTION_GOT): New macro.
            (PARSE_AND_LIST_LONGOPTS): Define shell variable.  Specify
            --got option.
            (got): New linker option.
            (PARSE_AND_LIST_OPTIONS): Define shell variable.  Print help string
            for --got option.
            (PARSE_AND_LIST_ARGS_CASES): Define shell variable.  Handle --got
            option.
    
            * ld.texinfo: Document --got=<type> option.
            * gen-doc.texi: Add M68K.
            * NEWS: Mention the new feature.
    
            ld/testsuite/
    
            * ld-m68k/got-12.s: New file.
            * ld-m68k/got-13.s: New file.
            * ld-m68k/got-14.s: New file.
            * ld-m68k/got-15.s: New file.
            * ld-m68k/got-34.s: New file.
            * ld-m68k/got-35.s: New file.
            * ld-m68k/got-single-12-ok.d: New dump test.
            * ld-m68k/got-single-13-er.d: New dump test.
            * ld-m68k/got-negative-14-ok.d: New dump test.
            * ld-m68k/got-negative-15-er.d: New dump test.
            * ld-m68k/got-negative-12-13-14-34-ok.d: New dump test.
            * ld-m68k/got-negative-12-13-14-35-er.d: New dump test.
            * ld-m68k/got-multigot-14-ok.d: New dump test.
            * ld-m68k/got-multigot-15-er.d: New dump test.
            * ld-m68k/got-multigot-12-13-14-34-35-ok.d: New dump test.
            * ld-m68k/xgot-15.s: New source.
            * ld-m68k/got-xgot-15-ok.d: New test.
            * ld-m68k/got-xgot-12-13-14-15-34-35-ok.d: New test.
            * ld-m68k/m68k.exp: Run new tests.
    7fb9f789
bfd-in.h 32.9 KB