From 7fb9f789e396b4653bba0ff56d786f5470a870c9 Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Wed, 21 May 2008 12:01:37 +0000 Subject: Multi-GOT support for m68k. 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= 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. --- ld/NEWS | 3 +++ 1 file changed, 3 insertions(+) (limited to 'ld/NEWS') diff --git a/ld/NEWS b/ld/NEWS index 8c56d4e..9078e20 100644 --- a/ld/NEWS +++ b/ld/NEWS @@ -1,4 +1,7 @@ -*- text -*- +* The M68K linker now supports multiple GOT generation schemes controlled via + the --got= command line option. + * The ARM ELF linker will now generate stubs for function calls to symbols that are too far away. The placement of the stubs is controlled by a new linker command line option: --stub-group-size=N. -- cgit v1.1