[deliverable/binutils-gdb.git] / gold / ChangeLog

2009-08-12  Sriraman Tallam  <tmsriram@google.com>

        * icf.cc (Icf::find_identical_sections): Unfold symbols that have
        been maked as --keep-unique.
        (Icf::unfold_section): New function.
        * icf.h (Icf::unfold_section): New function.
        * options.h (General_options::keep_unique): New option.
        * testsuite/Makefile.am: Add commands to build icf_keep_unique_test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/icf_keep_unique_test.sh: New file.
        * testsuite/icf_keep_unique_test.cc: New file.

2009-08-12  Cary Coutant  <ccoutant@google.com>

        PR 10471
        * resolve.cc (Symbol_table::resolve): Check for references from
        dynamic objects to hidden and internal symbols.
        * testsuite/Makefile.am (hidden_test.sh): New test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/hidden_test.sh: New script.
        * testsuite/hidden_test_1.c: New test source.
        * testsuite/hidden_test_main.c: New test source.

2009-08-11  Doug Kwan  <dougkwan@google.com>

        * arm.cc: Update comments.
        (Target_arm::do_finalize_sections): Add a special PT_ARM_EXIDX
        segment to locate the .ARM.exidx section if present.

2009-08-09  Doug Kwan  <dougkwan@google.com>

        * dynobj.h (Sized_dynobj::do_section_entsize): Revert the previous
        patch.

2009-08-07  Sriraman Tallam  <tmsriram@google.com>
        * dynobj.h (Sized_dynobj::do_section_entsize): Add return to avoid
        compiler warnings.

2009-08-06  Sriraman Tallam  <tmsriram@google.com>

        * x86_64.cc (Target_x86_64::Relocate::relocate_tls): Check for a
        valid tls_segment only for non-debug-section relocations.
        * testsuite/Makefile.am: Add gc_tls_test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/gc_tls_test.cc: New file.
        * testsuite/gc_tls_test.sh: New file.

2009-08-05  Sriraman Tallam  <tmsriram@google.com>
        
        * icf.cc: New file.
        * icf.h: New file.
        * Makefile.am (CCFILES): Add icf.cc.
        (HFILES): Add icf.h
        * Makefile.in: Regenerate.
        * dynobj.h (Sized_dynobj::do_section_entsize): New function.
        * gc.h (gc_process_relocs): Populate lists used by icf to contain
        section, symbol and addend information for the relocs.
        * gold.cc (queue_middle_tasks): Call identical code folding.
        * gold.h: Add defines for multimap.
        * layout.cc (Layout::create_symtab_sections): Add symtab as parameter
        to the call of finalize_local_symbols.
        * main.cc (main): Create object of class Icf.
        * object.cc (Sized_relobj::do_layout): Allow this function to be
        called twice during icf.
        (Sized_relobj::do_finalize_local_symbols): Fold symbols corresponding
        to sections marked as identical by icf.
        (Sized_relobj::do_section_flags): Get section_flags from Symbols_data
        when available.
        (Sized_relobj::do_section_entsize): New function.
        * object.h (Object::section_entsize): New function.
        (Object::do_section_entsize): New pure virtual function.
        (Relobj::finalize_local_symbols): Add new parameter.
        (Relobj::do_section_entsize): New function.
        * options.h (General_options::icf): New option.
        (General_options::icf_iterations): New option.
        (General_options::print_icf_sections): New option.
        * plugin.cc (Sized_pluginobj::do_section_entsize): New function.
        * plugin.h (Sized_pluginobj::do_section_entsize): New function.
        * reloc.cc (Read_relocs::run): Delay scanning relocs when doing
        icf.
        * symtab.cc (Symbol_table::is_section_folded): New function.
        (Symbol_table::sized_finalize_symbol):  Fold symbols corresponding
        to sections marked as identical by icf.
        * symtab.h (Symbol_table::set_icf): New function.
        (Symbol_table::icf): New function.
        (Symbol_table::is_section_folded): New function.
        (Symbol_table::icf_): New data member.
        * target-reloc.h (relocate_section): Ignore sections folded by icf.
        * testsuite/Makefile.am: Add commands to build icf_test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/icf_test.sh: New file.
        * testsuite/icf_test.cc: New file.

2009-07-24  Chris Demetriou  <cgd@google.com>

        * layout.cc (is_compressible_debug_section): Fix incorrect
        comment about compressed section names.

2009-07-20  Ian Lance Taylor  <ian@airs.com>

        PR 10419
        * x86_64.cc (Target_x86_64::do_code_fill): Correct nop sequences.

2009-07-16  Ian Lance Taylor  <iant@google.com>

        PR 10400
        * layout.h: #include <map>.
        (class Kept_section): Change from struct to class.  Add accessors
        and setters.  Add section size to Comdat_group mapping.  Change
        Comdat_group to std::map.  Add is_comdat_ field.  Add
        linkonce_size field in union.
        (class Layout): Update declaration of find_or_add_kept_section.
        Don't declare find_kept_object.
        * layout.cc (Layout::find_or_add_kept_section): Remove candidate
        parameter.  Add object, shndx, is_comdat, and is_group_name
        parameters.  Change all callers.  Adjust for new Kept_section.
        (Layout::find_kept_object): Remove.
        * object.cc (Sized_relobj::include_section_group): Update use of
        Kept_section.  Rename secnum to shndx.  Only record
        Kept_comdat_section if sections are the same size.
        (Sized_relobj::include_linkonce_section): Update use of
        Kept_section.  Only record Kept_comdat_section if sections are the
        same size.  Set size of linkonce section.
        (Sized_relobj::map_to_kept_section): Update call to
        get_kept_comdat_section.
        * object.h (class Sized_relobj): Rename fields in
        Kept_comdat_section to drop trailing underscores; change object
        field to Relobj*.  Change Kept_comdat_section_table to store
        struct rather than pointer.
        (Sized_relobj::set_kept_comdat_section): Remove kept parameter.
        Add kept_object and kept_shndx parameters.  Change all callers.
        (Sized_relobj::get_kept_comdat_section): Change return type to
        bool.  Add kept_object and kept_shndx parameters.  Change all
        callers.
        * plugin.cc (Pluginobj::include_comdat_group): Update call to
        Layout::find_or_add_kept_section.

2009-07-09  Ian Lance Taylor  <iant@google.com>

        * merge.cc (Object_merge_map::initialize_input_to_output_map):
        Reserve space in the hash table.

2009-07-06  Mikolaj Zalewski  <mikolajz@google.com>

        * fileread.cc (File_read::get_mtime): New method.
        * fileread.h (Timespec): New structure.
        (File_read::get_mtime): New method.
        * incremental.cc (Incremental_inputs_entry_data::timestamp_usec):
        Renamed from timestamp_nsec.
        (Incremental_inputs_entry_write::timestamp_sec): Fix argument to
        Elf_Xword.
        (Incremental_inputs_entry_write::timestamp_usec): Renamed from 
        timestamp_nsec.
        (Incremental_inputs::report_archive): Save mtime; style fix. 
        (Incremental_inputs::report_obejct): Save mtime; style fix.
        (Incremental_inputs::report_script): Save mtime; style fix.
        (Incremental_inputs::finalize_inputs): Style fix.
        (Incremental_inputs::finalize): Style fix.
        (Incremental_inputs::create_input_section_data): Store inputs
        mtime.
        * incremental.h (Incremental_inputs::report_script): Add mtime
        argument.
        (Incremental_inputs::Input_info::Input_info): Intialize only one
        union member.
        (Incremental_inputs::Input_info::archive): Move to nameless
        union.
        (Incremental_inputs::Input_info::obejct): Move to nameless union.
        (Incremental_inputs::Input_info::script): Move to nameless union.
        (Incremental_inputs::mtime): New field.
        * script.cc (read_input_script): Pass file mtime to
        Incremental_input.
        * script.h (Script_info::inputs): Style fix.

2009-07-01  Ian Lance Taylor  <ian@airs.com>

        * freebsd.h (Target_freebsd::do_adjust_elf_header): Use size
        instead of 32.

2009-06-24  Ian Lance Taylor  <iant@google.com>

        PR 10156
        * layout.cc (Layout::choose_output_section): If we find an
        existing section, update the flags.
        (Layout::create_notes): New function, broken out of
        Layout::finalize.
        (Layout::finalize): Don't create note sections.
        (Layout::create_note): Don't crash if linker script discards
        section.
        (Layout::create_gold_note): Likewise.
        (Layout::create_build_id): Likewise.  Don't set
        after_input_sections on the section.
        (Layout::create_executable_stack_info): Remove target parameter.
        Change caller.
        * layout.h (class Layout): Declare create_notes.  Update
        declaration of create_executable_stack_info.
        * gold.cc (queue_middle_tasks): Call create_notes.
        * output.cc (Output_section::update_flags_for_input_section): Move
        here from output.h.  If SHF_ALLOC flag is newly set, mark address
        invalid.
        * output.h (Output_data::mark_address_invalid): New function.
        (class Output_section): Only declare, not define,
        update_flags_for_input_section.  Remove set_flags.

2009-06-24  Ian Lance Taylor  <iant@google.com>

        * script-sections.cc (Output_section_definition::
        set_section_addresses): Rename shadowing local load_address to
        laddr.

2009-06-24  Ian Lance Taylor  <iant@google.com>

        PR 10244
        * reloc.cc (relocate_sections): Skip empty relocation sections.

2009-06-23  Ian Lance Taylor  <iant@google.com>

        PR 10156
        * layout.cc (Layout::create_note): Use choose_output_section
        rather than make_output_section.

2009-06-23  Ian Lance Taylor  <iant@google.com>

        PR 10237
        * options.cc (General_options::parse_V): Set printed_version_.
        (General_options::General_options): Initialize printed_version_.
        * options.h (class General_options): Add printed_version_ field.
        * gold.cc (queue_initial_tasks): If there are no input files,
        don't give a fatal error if we printed the version information.
        (queue_middle_tasks): If using -r with a shared object, give a
        fatal error rather than an ordinary error.

2009-06-23  Ian Lance Taylor  <iant@google.com>

        PR 10219
        * layout.cc (Layout::Layout): Initialize have_stabstr_section_.
        (Layout::make_output_section): Set have_stabstr_section_ if we see
        a .stab*str section.
        (Layout::finalize): Call link_stabs_sections.
        (Layout::link_stabs_sections): New file.
        * layout.h (class Layout): Add have_stabstr_section_ field.
        Declare link_stabs_sections.

2009-06-23  Doug Kwan  <dougkwan@google.com>

        * Makefile.am (libgold_a_LIBADD): New.
        (ld_new_DEPENDENCIES, ld_new_LDADD): Remove LIBOBJS
        * Makefile.in: Regenerate.
        * config.in (HAVE_DECL_MEMMEM, HAVE_DECL_STRNDUP): New.
        * configure: Regenerate.
        * configure.ac (AC_CHECK_DECLS): Add strndup and memmem.
        * fileread.cc: Include sys/state.h
        * gold.h: Declare memmem and strndup if found missing.
        * gold_reloc.h: Include byteswap.h if HAVE_BYTESWAP_H is defined.

2009-06-23  Ian Lance Taylor  <iant@google.com>

        * configure.ac: Call AC_CHECK_DECLS using C, not C++.
        * configure: Rebuild.

2009-06-23  Ian Lance Taylor  <iant@google.com>

        PR 10147
        * object.cc (Object::section_contents): Don't try to get a view if
        the section has length zero.
        (Object::handle_gnu_warning_section): If the section is empty, use
        the name of the section as the warning.

2009-06-23  Ian Lance Taylor  <iant@google.com>

        PR 10133
        * stringpool.h (class Stringpool_template): Add optimize_ field.
        (Stringpool_template::set_optimize): New function.
        * stringpool.cc (Stringpool_template::Stringpool_template):
        Initialize optimize_ field.
        (Stringpool_template::set_string_offsets): Test local optimize
        fild rather than parameter.
        * layout.cc (Layout::Layout): Call set_optimize on the section
        name stringpool.

2009-06-22  Ian Lance Taylor  <iant@google.com>

        PR 10030
        * yyscript.y: Parse TARGET.
        * script.cc (script_set_target): New function.
        * script-c.h (script_set_target): Declare.
        * options.cc (General_options::string_to_object_format): Rename
        from string_to_object_format in anonymous namespace.  Change
        callers.
        * options.h (class General_options): Declare
        string_to_object_format.

2009-06-22  Ian Lance Taylor  <iant@google.com>

        * script-sections.cc (Script_sections::create_segments): Don't put
        program headers in a PT_LOAD segment if -n or -N.

2009-06-22  Ian Lance Taylor  <iant@google.com>

        PR 10141
        * options.h (class General_options): Add -z lazy and -z now.  Sort
        -z options into alphabetical order.
        * layout.cc (Layout::finish_dynamic_section): Handle -z now.

2009-06-21  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::make_output_section): Call
        Target::new_output_section.
        (Layout::attach_allocated_section_to_segment): Put large section
        sections in a separate load segment with the large segment flag
        set.
        (Layout::segment_precedes): Sort large data segments after other
        load segments.
        (align_file_offset): New static function.
        (Layout::set_segment_offsets): Use align_file_offset.
        * output.h (class Output_section): Add is_small_section_ and
        is_large_section_ fields.
        (Output_section::is_small_section): New function.
        (Output_section::set_is_small_section):  New function.
        (Output_section::is_large_section): New function.
        (Output_section::set_is_large_section): New function.
        (Output_section::is_large_data_section): New function.
        (class Output_segment): Add is_large_data_segment_ field.
        (Output_segment::is_large_data_segment): New function.
        (Output_segment::set_is_large_data_segment): New function.
        * output.cc (Output_section::Output_section): Initialize new
        fields.
        (Output_segment::Output_segment): Likewise.
        (Output_segment::add_output_section): Add assertion that large
        data sections always go in large data segments.  Force small data
        sections to the end of the list of data sections.  Force small BSS
        sections to the start of the list of BSS sections.  For large BSS
        sections to the end of the list of BSS sections.
        * symtab.h (class Symbol): Declare is_common_shndx.
        (Symbol::is_defined): Check Symbol::is_common_shndx.
        (Symbol::is_common): Likewise.
        (class Symbol_table): Define enum Commons_section_type.  Update
        declarations.  Add small_commons_ and large_commons_ fields.
        * symtab.cc (Symbol::is_common_shndx): New function.
        (Symbol_table::Symbol_table): Initialize new fields.
        (Symbol_table::add_from_object): Put small and large common
        symbols in the right list.
        (Symbol_table::sized_finalized_symbol): Check
        Symbol::is_common_shndx.
        (Symbol_table::sized_write_globals): Likewise.
        * common.cc (Symbol_table::do_allocate_commons): Allocate new
        common symbol lists.  Don't call do_allocate_commons_list if the
        list is empty.
        (Symbol_table::do_allocate_commons_list): Remove is_tls
        parameter.  Add comons_section_type parameter.  Change all
        callers.  Handle small and large common symbols.
        * object.cc (Sized_relobj::do_finalize_local_symbols): Check
        Symbol::is_common_shndx.
        * resolve.cc (symbol_to_bits): Likewise.
        * target.h (Target::small_common_shndx): New function.
        (Target::small_common_section_flags): New function.
        (Target::large_common_shndx): New function.
        (Target::large_common_section_flags): New function.
        (Target::new_output_section): New function.
        (Target::Target_info): Add small_common_shndx, large_common_shndx,
        small_common_section_flags, and large_common_section_flags
        fields.
        (Target::do_new_output_section): New virtual function.
        * arm.cc (Target_arm::arm_info): Initialize new fields.
        * i386.cc (Target_i386::i386_info): Likewise.
        * powerpc.cc (Target_powerpc::powerpc_info) [all versions]:
        Likewise.
        * sparc.c (Target_sparc::sparc_info) [all versions]: Likewise.
        * x86_64.cc (Target_x86_64::x86_64_info): Likewise.
        (Target_x86_64::do_new_output_section): New function.
        * configure.ac: Define conditional MCMODEL_MEDIUM.
        * testsuite/Makefile.am (check_PROGRAMS): Add large.
        (large_SOURCES, large_CFLAGS, large_DEPENDENCIES): Define.
        (large_LDFLAGS): Define.
        * testsuite/large.c: New file.
        * testsuite/testfile.cc (Target_test::test_target_info):
        Initialize new fields.
        * configure, testsuite/Makefile.in: Rebuild.

2009-06-05  Doug Kwan  <dougkwan@google.com>

        * Makefile.am (CCFILES): Add target.cc.
        * Makefile.in: Regenerate. 
        * i386.cc (class Target_i386): Define new virtual method to
        override do_is_local_label_name in parent.
        * object.cc (Sized_relobj::do_count_local_symbols): Discard
        local symbols if --discard-locals or -X is given.
        * options.h (class General_options): Declare new options
        '--discard-locals' and '-X' for discarding locals.
        * target.h (class Target): Define new methods is_local_label_name.
        Declare new virtual method do_is_local_label_name.
        * target.cc: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add discard_locals_test.
        (check_SCRIPTS): Add discard_locals_test.sh.
        (check_DATA): Add discard_local_tests.syms.
        (discard_locals_test_SOURCES, discard_locals_test_LDFLAGS): Define.
        (discard_local_tests.syms, discard_locals_test.o): New make rules.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/discard_locals_test.c: New file.
        * testsuite/discard_locals_test.sh: Same.

2009-06-05  Doug Kwan  <dougkwan@google.com>

        * object.cc (Sized_relobj::Sized_relobj): Initialize
        discarded_eh_frame_shndx_ to -1U.
        (Sized_relobj::do_layout): Record index of a discard .eh_frame
        section.
        (Sized_relobj::do_count_local_symbols): Skip local symbols in
        a discarded .eh_frame section.
        (Sized_relobj::do_finalize_local_symbols): Ditto.
        * object.h (class Sized_relobj): Declare new member
        discarded_eh_frame_shndx_.
        * testsuite/Makefile.am (check_PROGRAMS): Add local_labels_test.
        (local_labels_test.o, local_labels_test): New rules.
        * testsuite/Makefile.in: Regenerate.

2009-06-04  Doug Kwan  <dougkwan@google.com>

        * layout.cc (Layout::section_name_mapping): Add mapping for
        special ARM sections.

2009-06-03  Doug Kwan  <dougkwan@google.com>

        * arm.cc (utils::sign_extend): Reverse test in gold_assert.
        (utils::has_overflow): Same.

2009-06-03  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::section_name_mapping): New array, replacing
        Layout::linkonce_mapping.
        (Layout::section_name_mapping_count): New variable, replacing
        Layout::linkonce_mapping_count.
        (Layout::linkonce_output_name): Remove.
        (Layout::output_section_name): Rewrite.
        * layout.h (class Layout): Rename Linkonce_mapping to
        Section_name_mapping, linkonce_mapping to section_name_mapping,
        linkonce_mapping_count to section_name_mapping_count.  Don't
        declare linkonce_output_name.

2009-06-03  Doug Kwan  <dougkwan@google.com>

        * gold/arm.cc (namespace utils): New.
        (Target_arm::reloc_is_non_pic): Define new method.
        (class Arm_relocate_functions): New.
        (Target_arm::Relocate::relocate): Handle relocation types used by
        Android.

2009-06-03  Ian Lance Taylor  <iant@google.com>

        * arm.cc (Target_arm::scan::global): Use || instead of |.

2009-06-02  Doug Kwan  <dougkwan@google.com>

        * gold/arm.cc (Target_arm::Scan::Scan):  Initialize
        issued_non_pic_error_.
        (class Target_arm::Scan): Declare new method check_non_pic.
        Define new method symbol_needs_plt_entry.
        Declare new data member issued_non_pic_error_.
        (class Target_arm::Relocate): Declare new method
        should_apply_static_reloc.
        (Target_arm::may_need_copy_reloc): Handle STT_ARM_TFUNC.
        (Target_arm::Scan::check_non_pic): Define new method.
        (Target_arm::Scan::local): Handle a small subset of reloc types used
        by Android.
        (Target_arm::Scan::local): Same.
        (Target_arm::Relocate::should_apply_statci_reloc): Define new method.

2009-05-31  Mikolaj Zalewski  <mikolajz@google.com>

        * incremental.cc (Incremental_inputs::report_command_line): Filter
        out --incremental-* options.

2009-05-29  Doug Kwan  <dougkwan@google.com>

        * gold/arm.cc (Output_data_plt_arm): Forward declaration for new
        template class.
        (class Target_arm): Update comment.
        (Target_arm::Target_arm): Initialize new data members GOT_,
        PLT_, GOT_PLT_, REL_DYN_, COPY_RELOCS_ and DYNBSS_.
        Declare new methods Target_arm::got_section, Target_arm::make_plt_entry
        and Target_arm::rel_dyn_section.
        Declare new_enum Target_arm::Got_type.
        Declare new data members GOT_, PLT_, GOT_PLT_, REL_DYN_, COPY_RELOCS_
        and DYNBSS_.
        Update commments for member do_dynsym_value.
        (Target_arm::got_size, Target_arm::plt_section,
        Target_arm::may_need_copy_reloc and Target_arm::copy_reloc): Define
        new methods inside class defintion.
        (Target_arm::got_section): Define new method.
        (Target_arm::rel_dyn_section): Same.
        (Output_data_plt_arm): New template class.
        (Output_data_plt_arm::Output_data_plt_arm): Define constructor.
        (Output_data_plt_arm:do_adjust_output_section): Define new method.
        (Output_data_plt_arm::add_entry): Same.
        (Output_data_plt_arm::first_plt_entry): Define new
        static data member for PLT instruction template.
        (Output_data_plt_arm::plt_entry): Same.
        (Output_data_plt_arm::do_write): Define new method.
        (Target_arm::make_plt_entry): Same.
        (Target_arm::do_finalize_sections): Same.
        (Target_arm::do_dynsym_value): Same.

2009-05-28  Doug Kwan  <dougkwan@google.com>

        * Makefile.am (TARGETSOURCES): Add arm.cc.
        (ALL_TARGETOBJECTS): Add arm.$(OBJEXT)
        * Makefile.in: Regenerate.
        * arm.cc: New file.
        * configure.tgt: Add armbe*-*-*, armeb*-*-* and arm*-*-* targets.

2009-05-26  Doug Kwan  <dougkwan@google.com>

        * options.cc (General_options::parse_exclude_libs).  Fix a comment.
        (General_options::check_excluded_libs): Strip off directories in
        archive name before matching like GNU ld does.
        * testsuite/Makefile.am (MOSTLYCLEANFILES,
        exclude_libs_test_DEPENDENCIES): Add alt/libexclude_libs_test_3.a
        (exclude_libs_test_LDFLAGS): Add linker option
        -Wl,--exclude-libs,libexclude_libs_test_3
        (exclude_libs_test_LADD): Add alt/libexclude_libs_test_3.a as
        an explicit archive without using -l.
        (alt/libexclude_libs_test_3.a): New make rule.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/exclude_libs_test.c : Declare lib3_default().
        (main): Call it.
        * exclude_libs_test.sh: Add tests for alt/exclude_libs_test_3.a.
        * exclude_libs_test_3.c: New file.

2009-05-26  Nick Clifton  <nickc@redhat.com>

        * po/id.po: New Indonesian translation.
        * po/gold.pot: Updated template file.

2009-05-22  Sriraman Tallam  <tmsriram@google.com>

        * testsuite/Makefile.am: Add -ffunction-sections to compile 
        gc_comdat_test files.  Add -Wl,--gc-sections to build
        gc_comdat_test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/gc_comdat_test.sh: Fix the condition around grep.

2009-05-21  Sriraman Tallam  <tmsriram@google.com>

        * object.cc (Sized_relobj::map_to_kept_section): Return NULL if the
        kept comdat section was garbage collected.
        * testsuite/Makefile.am: Add test gc_comdat_test.sh.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/gc_comdat_test.sh: New file.
        * testsuite/gc_comdat_test_1.cc: New file.
        * testsuite/gc_comdat_test_2.cc: New file.

2009-05-19  Doug Kwan  <dougkwan@google.com>

        * archive.cc (Archive::Archive): Move constructor from archive.h
        to here.  Initialize no_export_.
        (Archive::get_elf_object_for_member): Set no_export flag of object.
        * archive.h (Archive::Archive): Move constructor body to
        archive.cc.
        (Archive::no_export): New method.
        (Archive::no_export_): New field.
        * object.h (Object::Object): Initialize no_export_ to false.
        (Object::no_export, Object::set_no_export): New methods.
        (Object::no_export_): New field.
        * options.cc (General_options::parse_exclude_libs): New method.
        (General_options::check_excluded_libs) Same.
        * options.h (exclude_libs): New option.
        (General_options::check_excluded_libs): New method declaration.
        (General_options::excluded_libs_): New field.
        * symtab.cc (Symbol_table::add_from_relobj): Hide symbols with
        default or protected visibility if an object has no-export flag set.
        testsuite/Makefile.am (check_PROGRAMS): Add exclude_libs_test.
        (check_SCRIPTS): Add exclude_libs_test.sh.
        (check_DATA): Add exclude_libs_test.syms.
        (MOSTLYCLEANFILES): Add exclude_libs_test.syms,
        libexclude_libs_test_1.a and libexclude_libs_test_2.a.
        (exclude_libs_test_SOURCES, exclude_libs_test_DEPENDENCIES,
        exclude_libs_test_LDFLAGS and exclude_libs_test_LDADD): Define.
        (exclude_libs_test.syms, libexclude_libs_test_1.a,
        libexclude_libs_test_2.a): New rules.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/exclude_libs_test.c: New file.
        * testsuite/exclude_libs_test.sh: Ditto.
        * testsuite/exclude_libs_test_1.c: Ditto.
        * testsuite/exclude_libs_test_2.c: Ditto.

2009-05-15  Ian Lance Taylor  <iant@google.com>

        * configure.ac: Check for declarations for cases where libiberty.h
        checks HAVE_DECL_xxx.
        * configure, config.in: Rebuild.

2009-05-15  Mikolaj Zalewski  <mikolajz@google.com>

        * gold.h (Incremental_argument_list): Remove (invalid) forward
        declaration.
        * incremental.cc (Incremental_inputs::report_achive): New method.
        (Incremental_inputs::report_object): New method.
        (Incremental_inputs::report_script): New method.
        (Incremental_inputs::finalize_inputs): New method.
        (Incremental_inputs::finalize): Call finalize_inputs().
        (Incremental_inputs::sized_create_incremental_inputs_section_data):
        Create inputs entries.
        * incremental.h (Incremental_input_type): New enum.
        (Incremental_inputs::Incremental_input): Initialize new fields.
        (Incremental_inputs::report_inputs): New method.
        (Incremental_inputs::report_achive): New method.
        (Incremental_inputs::report_object): New method.
        (Incremental_inputs::report_script): New method.
        (Incremental_inputs::finalize_inputs): New method.
        (Incremental_inputs::Input_info): New struct.
        (Incremental_inputs::Input_info_map): New typedef.
        (Incremental_inputs::lock_): New field.
        (Incremental_inputs::Inputs_): New field.
        (Incremental_inputs::Inputs_map): New field.
        * main.cc (main): Call Incremental_input::report_inputs.
        * options.h (Input_argument_list): Typedef moved from
        Input_arguments.
        (Input_file_group::Files): Remove, use ::Input_argument_list.
        (Input_file_group::Input_argument_list): Remove, use
        ::Input_argument_list.
        * plugin.cc (Plugin_manager::add_input_file): Add error in
        incremental build.
        * read_syms.cc (do_read_syms): Call Incremental_input::report_*
        functions.
        * script.cc (read_input_script): Call
        Incremental_input::report_script.
        * script.h (Script_info): New class.

2009-04-27  Ian Lance Taylor  <iant@google.com>

        * x86_64.cc (do_adjust_output_section): Set entsize to
        plt_entry_size.

2009-04-23  Elliott Hughes  <enh@google.com>

        * output.cc (Output_file::close): After short writes, continue
        writing from the correct offset in the buffer being written.

2009-04-23  Chris Demetriou  <cgd@google.com>

        * configure.ac (HAVE_TR1_UNORDERED_MAP_REHASH): New define.
        * configure: Regenerate.
        * config.in: Regenerate.
        * gold.h: Avoid std::tr1::unordered_map and std::tr1::unordered_set
        if HAVE_TR1_UNORDERED_MAP_REHASH is not defined.

2009-04-21  Mikolaj Zalewski  <mikolajz@google.com>

        * incremental.cc (Incremental_inputs_header_data): Renamed from
        Incremental_input_header_data.
        (Incremental_inputs_header_data::data_size): New field.
        (Incremental_inputs_header_data::put_input_file_count): Renamed
        from input_file_count.
        (Incremental_inputs_header_data::put_command_line_offset): Renamed
        from command_line_offset.
        (Incremental_inputs_header_data::put_reserved): Renamed from
        put_reserved.
        (Incremental_inputs_entry_data): Renamed from
        Incremental_input_entry_data.
        (Incremental_inputs_entry_data::data_size): New field.
        (Incremental_inputs::report_command_line): New method.
        (Incremental_inputs::finalize): New method.
        (Incremental_inputs::create_incremental_inputs_data): New method.
        (Incremental_inputs::sized_create_incremental_inputs_data): New method.
        * incremental.h: New file.
        * layout.cc (Layout::Layout): Handle new incremental_inputs_.
       (Layout::finalize): Create incremental inputs section in
        incremental builds.
       (Layout::create_incremental_info_sections): New method.
        * layout.h (Layout::incremental_inputs): New method.
       (Layout::create_incremental_info_sections): New method.
       (Layout::incremental_inputs_): New field.
        * main.cc (main): Notify Incremental_input of the command line.

2009-04-01  Ian Lance Taylor  <iant@google.com>
            Mikolaj Zalewski  <mikolajz@google.com>

        * gold.h (reserve_unordered_map): Define, three versions, one for
        each version of Unordered_map.
        * layout.cc (Layout::Layout): Remove options parameter.  Add
        number_of_input_files parameter.  Don't initialize options_.
        Initialize number_of_input_files_ and resized_signatures_.  Move
        sections_are_attached_.
        (Layout::layout_group): Reserve space for group_signatures_.
        (Layout::find_or_add_kept_section): Change name parameter to be a
        reference.  Resize signatures_ map when it gets large enough.
        (Layout::layout_eh_frame): Use parameters->options() instead of
        this->options_.
        (Layout::make_output_section): Likewise.
        (Layout::attach_allocated_section_to_segment): Likewise.
        (Layout::finalize, Layout::create_executable_stack): Likewise.
        (Layout::set_segment_offsets, Layout::create_interp): Likewise.
        (Layout::finish_dynamic_section, Layout::write_binary): Likewise.
        * layout.h (class Layout): Update declarations.  Remove options_
        field.  Add number_of_input_files_ and resized_signatures_
        fields.  Move sections_are_attached_ field.
        * main.cc (main): Pass number of input files to Layout
        constructor.  Don't pass options.

2009-03-30  Ian Lance Taylor  <iant@google.com>

        * ffsll.c (ffsll): Correct implementation.

2009-03-27  Ian Lance Taylor  <iant@google.com>

        * ffsll.c: New file.
        * configure.ac: Call AC_REPLACE_FUNCS on ffsll.
        * gold.h (ffsll): Declare if HAVE_FFSLL is not defined.
        * ftruncate.c (ftruncate): Declare before definition.
        * mremap.c (mremap): Likewise.
        * pread.c (pread): Likewise.
        * configure, Makefile.in, config.in: Rebuild.

        * mremap.c: New file.
        * configure.ac: Call AC_REPLACE_FUNCS on mremap.
        * gold.h (MREMAP_MAYMOVE): Define if HAVE_MREMAP is not defined.
        (mremap): Declare if HAVE_MREMAP is not defined.
        * configure, Makefile.in, config.in: Rebuild.

2009-03-27  Cary Coutant  <ccoutant@google.com>

        * powerpc.cc (Target_powerpc::check_non_pic): Assert that output is
        position independent.
        * sparc.cc (Target_sparc::check_non_pic): Likewise.
        * x86_64.cc (Target_x86_64::check_non_pic): Likewise.

2009-03-24  Cary Coutant  <ccoutant@google.com>

        * symtab.h (needs_plt_entry): Check for unsatisfied reference from
        an executable.
        (needs_dynamic_reloc): Likewise.

2009-03-24  Ian Lance Taylor  <iant@google.com>

        * yyscript.y (file_cmd): Recognize EXTERN.
        (extern_name_list, extern_name_list_body): New nonterminals.
        * script.cc (script_add_extern): Define.
        * script-c.h (script_add_extern): Declare.

2009-03-24  Rafael Avila de Espindola  <espindola@google.com>

        * object.cc (is_elf_object): Define.
        * object.h (is_elf_object): Declare.
        * archive.cc (Archive::get_elf_object_for_member): Call
        is_elf_object.
        * readsyms.cc (Read_symbols::do_read_symbols): Likewise.

2009-03-24  Elliott Hughes  <enh@google.com>

        * output.cc (Output_file::map_anonymous): Define.
        (Output_file::map): Use map_anonymous.  If the regular mmap fails,
        try an anonymous one.  Report the size if the mmap fails.
        * output.h (class Output_file): Declare map_anonymous.

2009-03-24  Ian Lance Taylor  <iant@google.com>

        * target-select.cc (instantiate_target): Don't acquire the lock if
        the instantiated_target_ field has already been set.

2009-03-23  Ian Lance Taylor  <iant@google.com>

        * gold-threads.h (class Initialize_lock): Define.
        * gold-threads.cc (class Initialize_lock_once): Define.
        (initialize_lock_control): New static variable.
        (initialize_lock_pointer): New static variable.
        (initialize_lock_once): New static function.
        (Initialize_lock::Initialize_lock): Define.
        (Initialize_lock::initialize): Define.
        * target-select.h: Include "gold-threads.h".
        (class Target_selector): Add lock_ and initialize_lock_ fields.
        Don't define instantiate_target, just declare it.
        * target-select.cc (Target_selector::Target_selector): Initialize
        new fields.
        (Target_selector::instantiate_target): Define.
        * descriptors.h: Include "gold-threads.h".
        (class Descriptors): Add initialize_lock_ field.
        * descriptors.cc (Descriptors::Descriptors): Initialize new
        field.
        (Descriptors::open): Use initialize_lock_ field
        * errors.h (class Errors): Add initialize_lock_ field.
        * errors.cc (Errors::Errors): Initialize new field.
        (Errors::initialize_lock): Use initialize_lock_ field.
        * powerpc.cc (class Target_selector_powerpc): Remove
        instantiated_target_ field.  In do_recognize call
        instantiate_target rather than do_instantiate_target.  In
        do_instantiate_target just allocate a new target.
        * sparc.cc (class Target_selector_sparc): Likewise.

        * freebsd.h: New file.
        * i386.cc: Include "freebsd.h".
        (Target_i386): Derive from Target_freebsd rather than
        Sized_target.
        (Target_selector_i386): Derive from Target_selector_freebsd rather
        than Target_selector.
        * x86_64.cc: Include "freebsd.h".
        (Target_x86_64): Derive from Target_freebsd rather than
        Sized_target.
        (Target_selector_x86_64): Derive from Target_selector_freebsd
        rather than Target_selector.
        * target.h (class Target): Add adjust_elf_header and
        do_adjust_elf_header.
        * output.cc (Output_file_header:: do_sized_write): Call target
        adjust_elf_header routine.
        * configure.tgt: Set targ_osabi.
        * configure.ac: Define GOLD_DEFAULT_OSABI.
        * parameters.cc (Parameters::default_target): Pass
        GOLD_DEFAULT_OSABI to select_target.
        * target-select.h (class Target_selector): Make instantiate_target
        protected rather than private.
        * Makefile.am (HFILES): Add freebsd.h.
        * configure, Makefile.in, config.in: Rebuild.

        * merge.cc (do_add_input_section): Correct pend value.  Change
        message about last entry not being null terminated from error to
        warning.

2009-03-20  Mikolaj Zalewski  <mikolajz@google.com>

        * incremental.cc: New file.
        * Makefile.am (CCFILES): Add incremental.cc.
        * Makefile.in: Rebuild.

2009-03-19  Paul Pluzhnikov  <ppluzhnikov@google.com>

        * layout.cc (Layout::output_section_name): Preserve names
        of '.note.' sections.
        
2009-03-19  Ian Lance Taylor  <iant@google.com>

        * descriptors.cc (Descriptors::open): Check that the options are
        valid before using them.

2009-03-18  Ian Lance Taylor  <iant@google.com>

        * script-sections.h: Include <list>.
        (class Script_sections): Change Sections_elements from std::vector
        to std::list.  Typedef public Elements_iterator.  Add
        orphan_section_placement_, data_segment_align_start_, and
        saw_data_segment_align_ fields.  Remove data_segment_align_index_
        field.
        * script-sections.cc (class Orphan_section_placement): New class.
        (class Sections_element): Add virtual functions is_relro and
        orphan_section_init.  Remove virtual function place_orphan_here.
        (class Output_section_definition): Add is_relro and
        orphan_section_init.  Remove place_orphan_here.
        (class Orphan_output_section): Likewise.
        (Script_sections::Script_sections): Update for field changes.
        (Script_sections::data_segment_align): Set saw_data_segment_align_
        and data_segment_align_start_, not data_segment_align_index.
        (Script_sections::data_segment_relro_end): Check
        saw_data_segment_align_.  Use data_segment_align_start_ rather
        than data_segment_align_index_.
        (Script_sections::place_orphan): Rewrite to use
        Orphan_section_placement.

2009-03-17  Ian Lance Taylor  <iant@google.com>

        * archive.cc (Archive::add_symbols): Check for a version attached
        to the symbol name in the archive map.
        * testsuite/Makefile.am (check_PROGRAMS): Add ver_test_11.
        (ver_test_11_SOURCES, ver_test_11_DEPENDENCIES): Define.
        (ver_test_11_LDFLAGS, ver_test_11_LDADD): Define.
        (ver_test_11.a): New target.
        * testsuite/Makefile.in: Rebuild.

        * configure.ac: Check for chsize and posix_fallocate.  Replace
        ftruncate.
        * ftruncate.c: New file, from gnulib.
        * output.cc (posix_fallocate): Define dummy version if not
        HAVE_POSIX_FALLOCATE.
        (Output_file::map): Call posix_fallocate rather than lseek and
        write.
        * gold.h (ftruncate): Declare if not HAVE_FTRUNCATE.
        * configure, Makefile.in, config.in: Rebuild.

2009-03-17  Paul Pluzhnikov  <ppluzhnikov@google.com>
        
        * layout.h (Layout::create_note): Add section_name parameter.
        * layout.cc (Layout::create_note): Likewise.
        (Layout::create_build_id, Layout::create_gold_note): Fix callers.
        
2009-03-17  Ian Lance Taylor  <iant@google.com>

        * descriptors.cc: Include "options.h".
        (FD_CLOEXEC, O_CLOEXEC): Define if not defined.
        (Descriptors::open): Always use O_CLOEXEC when opening a new
        descriptor.  If we have a plugin, and O_CLOEXEC was not defined,
        then set FD_CLOEXEC.

        * sparc.cc (class Target_sparc): Add has_got_section.
        (Target_sparc::Scan::global): If we see _GLOBAL_OFFSET_TABLE_,
        make sure we have a GOT section.

        * sparc.cc (optimize_tls_reloc): Recognize R_SPARC_TLS_IE_ADD.
        (Target_sparc::Scan::local): Likewise.
        (Target_sparc::Scan::global): Likewise.
        (Target_sparc::Relocate::relocate): Likewise.
        (Target_sparc::Relocate::relocate_tls): Likewise.

        * symtab.cc (Symbol_table::define_default_version): New function,
        broken out of add_from_object.
        (Symbol_table::add_from_object): Call define_default_version.
        (Symbol_table::define_special_symbol): Add resolve_oldsym
        parameter.  Change all callers.  If the version for a symbol comes
        from a version script, resolve it with the symbol with the same
        name with no version.  Also add the symbol without a version if
        appropriate.
        (do_define_in_output_data): If resolving with oldsym, don't delete
        sym.
        (do_define_in_output_segment): Likewise.
        (do_define_as_constant): Likewise.
        * symtab.h (class Symbol_table): Update declarations.

2009-03-13  Ian Lance Taylor  <iant@google.com>

        * readsyms.cc (Read_symbols::incompatible_warning): New function.
        (Read_symbols::requeue): New function.
        (Read_symbols::do_read_symbols): If make_elf_object fails because
        the target type is not configured, and the file was searched for,
        issue a warning and retry with the next directory.
        (Add_symbols::run): If the file has an incompatible format, and
        it was searched for, requeue the Read_symbols task.  On error,
        release the object.
        * readsyms.h (class Read_symbols): Add dirindex_ field.  Add
        dirindex parameter to constructor.  Change all callers.  Declare
        incompatible_warning and requeue.
        (class Add_symbols): Add dirpath_, dirindex_, mapfile_,
        input_argument_ and input_group_ fields.  Add them to
        constructor.  Change all callers.
        (class Read_script): Add dirindex_ field.  Add it to constructor.
        Change all callers.
        * archive.cc (Archive::setup): Remove input_objects parameter.
        Change all callers.
        (Archive::get_file_and_offset): Likewise.
        (Archive::read_all_symbols): Likewise.
        (Archive::read_symbols): Likewise.
        (Archive::get_elf_object_for_member): Remove input_objects
        parameter.  Add punconfigured parameter.  Change all callers.
        (Archive::add_symbols): Change return type to bool.  Check return
        value of include_member.
        (Archive::include_all_members): Likewise.
        (Archive::include_member): Change return type to bool.  Return
        false if first included object has incompatible target.  Set
        included_member_ field.
        (Add_archive_symbols::run): If add_symbols returns false, requeue
        Read_symbols task.
        * archive.h (class Archive): Add included_member_ field.
        Initialize it in constructor.  Add input_file and searched_for
        methods.  Update declarations.
        (class Add_archive_symbols): Add dirpath_, dirindex_, and
        input_argument_ fields.  Add them to constructor.  Change all
        callers.
        * script.cc: Include "target-select.h".
        (class Parser_closure): Add skip_on_incompatible_target_ and
        found_incompatible_target_ fields.  Add
        skip_on_incompatible_target parameter to constructor.  Change all
        callers.  Add methods skip_on_incompatible_target,
        clear_skip_on_incompatible_target, found_incompatible_target, and
        set_found_incompatible_target.
        (read_input_script): Add dirindex parameter.  Change all callers.
        If parser finds an incompatible target, requeue Read_symbols
        task.
        (script_set_symbol): Clear skip_on_incompatible_target in
        closure.
        (script_add_assertion, script_parse_option): Likewise.
        (script_start_sections, script_add_phdr): Likewise.
        (script_check_output_format): New function.
        * script.h (read_input_script): Update declaration.
        * script-c.h (script_check_output_format): Declare.
        * yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
        (ignore_cmd): Remove OUTPUT_FORMAT.
        * fileread.cc (Input_file::Input_file): Add explicit this.
        (Input_file::will_search_for): New function.
        (Input_file::open): Add pindex parameter.  Change all callers.
        * fileread.h (class Input_file): Add input_file_argument method.
        Declare will_search_for.  Update declarations.
        * object.cc (make_elf_object): Add punconfigured parameter.
        Change all callers.
        * object.h (class Object): Make input_file public.  Add
        searched_for method.
        (make_elf_object): Update declaration.
        * dirsearch.cc (Dirsearch::find): Add pindex parameter.  Use it to
        restart search.
        * dirsearch.h (class Dirsearch): Update declaration.
        * options.h (class General_options): Add --warn-search-mismatch.
        * parameters.cc (Parameters::is_compatible_target): New function.
        * parameters.h (class Parameters): Declare is_compatible_target.
        * workqueue.cc (Workqueue::add_blocker): New function.
        * workqueue.h (class Workqueue): Declare add_blocker.

        * fileread.cc (Input_file::open): Remove options parameter.
        Change all callers.
        (Input_file::open_binary): Likewise.
        * script.cc (read_input_script): Likewise.
        * readsyms.h (class Read_symbols): Remove options_ field.  Remove
        options parameter from constructor.  Change all callers.
        (class Read_script): Likewise.
        * fileread.h (class Input_file): Update declarations.
        * script.h (read_input_script): Update declaration.

2009-03-10  Nick Clifton  <nickc@redhat.com>

        * po/es.po: New Spanish translation.

2009-03-06  Cary Coutant  <ccoutant@google.com>

        * options.cc (parse_short_option): Keep dash_z from registering itself.

2009-03-03  Ian Lance Taylor  <iant@google.com>

        PR 9918
        * target-reloc.h (relocate_section): Pass output_section to
        relocate.
        * i386.cc (Target_i386::should_apply_static_reloc): Add
        output_section parameter.  Change all callers.
        (Target_i386::Relocate::relocate): Add output_section parameter.
        * x86_64.cc (Target_x86_64::Relocate::relocate): Likewise.
        * sparc.cc (Target_sparc::Relocate::relocate): Likewise.
        * powerpc.cc (Target_powerpc::Relocate::relocate): Likewise.
        * testsuite/two_file_shared.sh: New script.
        * testsuite/Makefile.am (check_SCRIPTS): Add two_file_shared.sh.
        (check_DATA): Add two_file_shared.dbg.
        (two_file_shared.dbg): New target.
        * testsuite/Makefile.in: Rebuild.

2009-03-01  Ian Lance Taylor  <iant@google.com>

        * configure.ac: Check for byteswap.h.
        * configure: Rebuild.
        * config.in: Rebuild.

2009-03-01  Mikolaj Zalewski  <mikolajz@google.com>

        * layout.cc (Layout::find_or_add_kept_section): New function.
        (Layout::add_comdat): Removed.
        * layout.h (struct Kept_section): Move out of class Layout.
        Remove trailing underscores from field names.  Add group_sections
        field.  Rename group_ field to is_group.  Change all uses.
        (class Layout): Declare find_or_add_kept_section, not add_comdat.
        * object.cc (Sized_relobj::Sized_relobj): Don't initialize
        comdat_groups_ field.
        (Sized_relobj::include_section_group): Use
        find_or_add_kept_section and Kept_section::group_sections.
        (Sized_relobj::include_linkonce_section): Likewise.
        * object.cc (class Sized_relobj): Don't define Comdat_group or
        Comdat_group_table.  Remove find_comdat_group and
        add_comdat_group.  Remove comdat_groups_ field.
        * plugin.cc (include_comdat_group): Use
        Layout::find_or_add_kept_section.

2009-02-28  Ian Lance Taylor  <iant@google.com>

        * README: --gc-sections and map files are now supported.  Document
        some build requirements.

        PR 6992
        * symtab.cc (Symbol_table::sized_write_section_symbol): In a
        relocatable link set the value of the section symbol to zero.
        * object.cc (Sized_relobj::do_finalize_local_symbols): In a
        relocatable link don't include the section address in the local
        symbol value.

2009-02-27  Ian Lance Taylor  <iant@google.com>

        PR 6811
        * options.h (class Search_directory): Add is_system_directory.
        (class General_options): Declare is_in_system_directory.
        * options.cc (get_relative_sysroot): Make static.
        (get_default_sysroot): Make static.
        (General_optoins::is_in_system_directory): New function.
        * fileread.cc (Input_file::is_in_system_directory): New function.
        * fileread.h (class Input_file): Declare is_in_system_directory.
        * object.h (class Object): Add is_in_system_directory.
        (class Input_objects): Remove system_library_directory_ field.
        * object.cc (Input_objects::add_object): Don't set
        system_library_directory_.
        (input_objects::found_in_system_library_directory): Remove.
        * symtab.cc (Symbol_table::write_globals): Remove input_objects
        parameter.  Change all callers.
        (Symbol_table::sized_write_globals): Likewise.
        (Symbol_table::warn_about_undefined_dynobj_symbol): Likewise.
        Call Object::is_in_system_directory.
        * symtab.h (class Symbol_table): Update declarations.

        PR 5990
        * descriptors.h (Open_descriptor): Add is_on_stack field.
        * descriptors.cc (Descriptors::open): If the descriptor is on the
        top of the stack, remove it.  Initialize is_on_stack field.
        (Descriptors::release): Only add pod to stack if it is not on the
        stack already.
        (Descriptors::close_some_descriptor): Clear stack_next and
        is_on_stack fields.

        PR 7091
        * output.cc (Output_section::find_starting_output_address): Rename
        from starting_output_address; add PADDR parameter; change return
        type.
        * output.h (class Output_section): Declare
        find_starting_output_address instead of starting_output_address.
        * object.cc (Sized_relobj::do_finalize_local_symbols): Handle a
        section symbol for which we can't find a merge section.

        PR 9836
        * symtab.cc (Symbol_table::add_from_object): If the visibility is
        hidden or internal, force the symbol to be local.
        * resolve.cc (Symbol::override_visibility): Define.
        (Symbol::override_base): Use override_visibility.
        (Symbol_table::resolve): Likewise.
        (Symbol::override_base_with_special): Likewise.
        (Symbol_table::override_with_special): If the visibility is hidden
        or internal, force the symbol to be local.
        * symtab.h (class Symbol): Add set_visibility and
        override_visibility.
        * testsuite/ver_test_1.sh: New file.
        * testsuite/Makefile.am (check_SCRIPTS): Add ver_test_1.sh.
        (check_DATA): Add ver_test_1.syms.
        (ver_test_1.syms): New target.
        * testsuite/Makefile.in: Rebuild.

2009-02-25  Cary Coutant  <ccoutant@google.com>

        * layout.cc (Layout::choose_output_section): Don't rename sections
        when using a linker script that has a SECTIONS clause.
        * Makefile.in: Regenerate.

        * testsuite/Makefile.am (script_test_5.sh): New test case.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/script_test_5.cc: New file.
        * testsuite/script_test_5.sh: New file.
        * testsuite/script_test_5.t: New file.

2009-02-13  Rafael Avila de Espindola  <espindola@google.com>

        * archive.cc (Archive::include_member): Update calls to add_symbols.
        * dynobj.cc (Sized_dynobj<size, big_endian>::make_version_map): Add
        the Layout argument.
        * dynobj.h (do_add_symbols): Add the Layout argument.
        * object.cc (Sized_relobj<size, big_endian>::do_add_symbols): Add the
        Layout argument.
        * object.h (Object::add_symbols): Add the Layout argument.
        (Object::do_add_symbols): Add the Layout argument.
        (Sized_relobj::do_add_symbols): Add the Layout argument.
        * plugin.cc (Sized_pluginobj<size, big_endian>::do_add_symbols):
        Unify the two versions.
        (Add_plugin_symbols): Remove.
        * plugin.h (Pluginobj::add_symbols, Pluginobj::do_add_symbols): Remove.
        (Sized_pluginobj::do_add_symbols): Unify the two versions.
        (Add_plugin_symbols): Remove.
        * readsyms.cc (Read_symbols::do_read_symbols): Update call to
        Add_symbols. Use Add_symbols instead of Add_plugin_symbols.
        (Add_symbols::run): Make it work with Pulginobj.

2009-02-06  Ian Lance Taylor  <iant@google.com>

        * object.cc (Sized_relobj::do_layout): Make info message start
        with lower case letter.

2009-02-06  Mikolaj Zalewski  <mikolajz@google.com>

        * binary.cc: Fix file comment.

        * options.h (enum Incremental_disposition): Define.
        (class General_options): Add new options: --incremental,
        --incremental_changed, --incremental_unchanged,
        --incremental_unknown.  Add incremental_disposition_ and
        implicit_incremental_ fields.
        (General_options::incremental_disposition): New function.
        (class Position_dependent_options): Add incremental_disposition
        option.
        (Position_dependent_options::copy_from_options): Set incremental
        dispositions.
        * options.cc (General_options::parse_incremental_changed): New
        function.
        (General_options::parse_incremental_unchanged): New function.
        (General_options::parse_incremental_unknown): New function.
        (General_options::General_options): Initialize new fields
        incremental_disposition_ and implicit_incremental_.
        (General_options::finalize): Check for uasge of --incremental-*
        without --incremental.

2009-02-06  Chris Demetriou  <cgd@google.com>

        * gold.h (gold_undefined_symbol): Change to take only a Symbol
        pointer and to report location as the file name associated with
        the symbol.
        (gold_undefined_symbol_at_location): New function to replace the
        old gold_undefined_symbol functionality.
        * target-reloc.h (relocate_section): Update to use
        gold_undefined_symbol_at_location.
        * symtab.cc (Symbol_table::warn_about_undefined_dynobj_symbol):
        Call gold_undefined_symbol function rather than gold_error.
        * errors.h (Errors::undefined_symbol): Take location as a
        string, rather than calculating it from a relocation.
        * errors.cc (Errors::fatal): Print "fatal error:" before the
        formatted message.
        (Errors::error, Errors::error_at_location): Print "error: "
        before the formatted message.
        (Errors::undefined_symbol): Take location as a string, rather
        than calculating it from a relocation.
        (gold_undefined_symbol_at_location): New function akin to
        old gold_undefined_symbol, calculates location from relocation.
        (gold_undefined_symbol): Change to take only a Symbol pointer
        and to report location as the file name associated with the symbol.
        * testsuite/debug_msg.sh: Update for changed error messages.
        * testsuite/undef_symbol.sh: Likewise.

2009-02-04  Duncan Sands  <baldrick@free.fr>

        PR 9812
        * reduced_debug_output.h
        (Output_reduced_debug_abbrev_section::failed): Use format for
        gold_warning.
        (Output_reduced_debug_info_section::faild): Likewise.

2009-01-31  Mikolaj Zalewski  <mikolajz@google.com>

        * script.cc (Lazy_demangler): New class.
        (Version_script_info::get_symbol_version_helper): Demangle a
        symbol only once.

2009-01-29  Cary Coutant  <ccoutant@google.com>

        * i386.cc (Target_i386::Relocate::relocate): Recognize non-PIC calls
        to __tls_get_addr.
        * x86_64.cc (Target_x86_64::Relocate::relocate): Likewise.

2009-01-28  Ian Lance Taylor  <iant@google.com>

        * version.cc (version_string): Bump to 1.9.

        * gold.h: Include <cstring> and <stdint.h>.
        * version.cc: Include <cstdio>.
        * object.cc (Sized_relobj::do_layout): Initialize gc_sd to avoid a
        warning.
        * reduced_debug_output.cc (insert_into_vector): Rename from
        Insert_into_vector; change all callers.  Use Swap_unaligned to
        avoid aliasing issue; remove union since it is unnecessary.

2009-01-27  Sriraman Tallam  <tmsriram@google.com>

        * Makefile.am (CCFILES): Add gc.cc.
        (HFILES): Add gc.h.
        * Makefile.in: Regenerate.
        * gold.cc (Gc_runner): New class.
        (queue_initial_tasks): Call garbage collection related tasks
        when corresponding options are invoked.
        (queue_middle_gc_tasks): New function.
        (queue_middle_tasks): Reorder tasks to allow relocs to be read and
        processed early before laying out sections during garbage collection.
        * gold.h (queue_middle_gc_tasks): New function.
        (is_prefix_of): Move from "layout.cc".
        * i386.cc (Target_i386::gc_process_relocs): New function.
        * layout.cc (is_prefix_of): Remove. Move to "gold.h"
        * main.cc (main): Create object of class "Garbage_collection".
        * object.cc (Relobj::copy_symbols_data): New function.
        (Relobj::is_section_name_included): New function.
        (Sized_relobj::do_layout): Allow this function to be called twice 
        during garbage collection and defer layout of section during the 
        first call.
        * object.h (Relobj::get_symbols_data): New function.
        (Relobj::is_section_name_included): New function.
        (Relobj::copy_symbols_data): New function.
        (Relobj::set_symbols_data): New function.
        (Relobj::get_relocs_data): New function.
        (Relobj::set_relocs_data): New function.
        (Relobj::is_output_section_offset_invalid): New pure virtual function.
        (Relobj::gc_process_relocs): New function.
        (Relobj::do_gc_process_relocs): New pure virtual function.
        (Relobj::sd_): New data member.
        (Sized_relobj::is_output_section_offset_invalid): New function.
        (Sized_relobj::do_gc_process_relocs): New function.
        * options.h (General_options::gc_sections): Modify to not be a no-op.
        (General_options::print_gc_sections): New option.
        * plugin.cc (Plugin_finish::run): Remove function call to
        Plugin_manager::layout_deferred_objects.  Move it to "gold.cc".
        * powerpc.cc (Target_powerpc::gc_process_relocs): New function.
        * reloc.cc (Read_relocs::run): Add task to process relocs and
        determine unreferenced sections when doing garbage collection.
        (Gc_process_relocs): New class.
        (Sized_relobj::do_gc_process_relocs): New function.
        (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for
        sections that are garbage collected.
        * reloc.h (Gc_process_relocs): New class.
        * sparc.cc (Target_sparc::gc_process_relocs): New function.
        * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for
        symbols whose corresponding sections are garbage collected.
        (Symbol_table::Symbol_table): Add new parameter for the garbage
        collection object.
        (Symbol_table::gc_mark_undef_symbols): New function.
        (Symbol_table::gc_mark_symbol_for_shlib): New function.
        (Symbol_table::gc_mark_dyn_syms): New function.
        (Symbol_table::resolve): Do not treat symbols seen in dynamic objects
        as garbage.
        (Symbol_table::add_from_object): Likewise.
        (Symbol_table::add_from_relobj): When building shared objects, do not
        treat externally visible symbols as garbage.
        (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol
        table information for static and relocatable links.
        * symtab.h (Symbol_table::set_gc): New function.
        (Symbol_table::gc): New function.
        (Symbol_table::gc_mark_undef_symbols): New function.
        (Symbol_table::gc_mark_symbol_for_shlib): New function.
        (Symbol_table::gc_mark_dyn_syms): New function.
        (Symbol_table::gc_): New data member.
        * target.h (Sized_target::gc_process_relocs): New pure virtual 
        function.
        * x86_64.cc (Target_x86_64::gc_process_relocs): New function.
        * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.

2009-01-20  Chris Faylor <me.sourceware@sourceware.org>

        * options.h (General_options::gc_sections): Define as a no-op for now.
        (General_options::no_keep_memory): Ditto.
        (General_options::Bshareable): Define.
        * options.cc (General_options::finalize): Honor -Bshareable.

2009-01-20  Andreas Schwab  <schwab@suse.de>

        * powerpc.cc (Powerpc_relocate_functions::rel16_ha): Don't try to
        read the value in the contents, since we don't use it.  Use the
        template endianness when writing.
        (Relocate::relocate): Use it for R_PPC_REL16_HA.

2009-01-19  Andreas Schwab  <schwab@suse.de>

        * configure.tgt (powerpc64-*): Fix targ_obj.

2009-01-15  Ian Lance Taylor  <iant@google.com>

        * object.cc (Sized_relobj::write_local_symbols): Don't write out
        local symbols when stripping all symbols.

2009-01-14  Cary Coutant  <ccoutant@google.com>

        * output.cc (Output_reloc): Add explicit instantiations.

2009-01-14  Cary Coutant  <ccoutant@google.com>

        * archive.cc (Archive::get_elf_object_for_member): Remove call
        to File_read::claim_for_plugin.
        * descriptors.cc (Descriptors::open): Remove reference to
        is_claimed.
        (Descriptors::claim_for_plugin): Remove.
        * descriptors.h (Descriptors::claim_for_plugin): Remove.
        (Descriptors::is_claimed): Remove.
        (claim_descriptor_for_plugin): Remove.
        * fileread.cc (File_read::claim_for_plugin): Remove.
        * fileread.h (File_read::claim_for_plugin): Remove.
        (File_read::descriptor): Reopen descriptor if necessary.
        * plugin.cc  (Plugin::load): Add two new APIs to transfer vector.
        (Plugin_manager::all_symbols_read): Add task parameter. Change
        all callers.
        (Plugin_manager::get_input_file): New function.
        (Plugin_manager::release_input_file): New function.
        (Pluginobj::Pluginobj): Add filesize parameter and initialize
        corresponding data member.
        (Sized_pluginobj::Sized_pluginobj): Add filesize parameter
        and pass to base constructor. Change all callers.
        (get_input_file, release_input_file): New functions.
        (make_sized_plugin_object): Add filesize parameter. Change all callers.
        * plugin.h (Plugin_manager::Plugin_manager): Initialize task_ member.
        (Plugin_manager::all_symbols_read): Add task parameter.
        (Plugin_manager::get_input_file): New function.
        (Plugin_manager::release_input_file): New function.
        (Plugin_manager::task_): New data member.
        (Pluginobj::Pluginobj): Add filesize parameter.
        (Pluginobj::filename): New function.
        (Pluginobj::descriptor): New function.
        (Pluginobj::filesize): New function.
        (Pluginobj::filesize_): New data member.
        (Sized_pluginobj::Sized_pluginobj): Add filesize parameter.
        * readsyms.cc (Read_symbols::do_read_symbols): Remove call to
        File_read::claim_for_plugin; use Object::unlock to unlock the file.

        * testsuite/Makefile.am (plugin_test_4): New test case for plugins
        with archive libraries.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/plugin_test.c (struct sym_info): New type.
        (get_input_file, release_input_file): New static variables.
        (onload): Capture new transfer vector entries.
        (claim_file_hook): Stop reading at end of file according to filesize.
        Factor out parsing of readelf output into separate function.
        (all_symbols_read_hook): Exercise get_input_file and release_input_file
        APIs and get the source file name from the symbol table.  Convert
        source file name to corresponding object file name.  Print info
        message when adding new input files.
        (parse_readelf_line): New function.
        * testsuite/plugin_test_1.sh: Add checks for new info messages.
        * testsuite/plugin_test_2.sh: Likewise.
        * testsuite/plugin_test_3.sh: Likewise.
        * testsuite/plugin_test_4.sh: New test case.

2009-01-07  Ian Lance Taylor  <iant@google.com>

        * version.cc (version_string): Bump to 1.8.

2008-12-23  Cary Coutant  <ccoutant@google.com>

        * gold.cc (gold_exit): Call plugin cleanup handlers on exit.
        * plugin.cc (Plugin_manager::finish): Rename as
        layout_deferred_objects.  Move cleanup to separate function.
        (Plugin_manager::cleanup): New function.
        (Plugin_finish::run): Call layout_deferred_objects and cleanup
        separately.
        * plugin.h (Plugin_manager::finish): Rename as
        layout_deferred_objects.
        (Plugin_manager::cleanup): New function.
        (Plugin_manager::cleanup_done): New field.

2008-12-23  Cary Coutant  <ccoutant@google.com>

        * plugin.cc (is_visible_from_outside): New function.
        (Pluginobj::get_symbol_resolution_info): Call is_visible_from_outside
        so we don't return "IR only" status for exported symbols or -r links.

        * testsuite/Makefile.am (plugin_test_3): New test case.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/plugin_test_3.sh: New file.

2008-12-22  Cary Coutant  <ccoutant@google.com>

        * object.cc (Sized_relobj::layout_section): New function.
        (Sized_relobj::do_layout): Defer layout of input sections until after
        plugin has provided replacement files.
        (Sized_relobj::do_layout_deferred_sections): New function.
        * object.h (Relobj::set_section_offset): Remove virtual keyword.
        (Relobj::layout_deferred_sections): New function.
        (Relobj::do_layout_deferred_sections): New function.
        (Sized_relobj::do_layout_deferred_sections): New function.
        (Sized_relobj::layout_section): New function.
        (Sized_relobj::Deferred_layout): New structure.
        (Sized_relobj::deferred_layout_): New field.
        * plugin.cc (Plugin_manager::finish): Renamed, was cleanup.
        Change all callers.  Layout deferred sections.
        (class Plugin_finish): Renamed, was Plugin_cleanup.  Change all
        references.
        (Plugin_hook::run): Move code from do_plugin_hook inline.
        (Plugin_hook::do_plugin_hook): Remove.
        * plugin.h (Plugin_manager::Plugin_manager): Add missing initializers.
        (Plugin_manager::finish): Renamed, was cleanup.
        (Plugin_manager::should_defer_layout): New function.
        (Plugin_manager::add_deferred_layout_object): New function.
        (Plugin_manager::Deferred_layout_list): New type.
        (Plugin_manager::deferred_layout_objects_): New field.
        (Plugin_hook::do_plugin_hook): Remove.

2008-12-17  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Add --no case for
        --export-dynamic.

2008-12-16  Cary Coutant  <ccoutant@google.com>

        * plugin.cc (Plugin::load): Move LDPT_MESSAGE to front of transfer
        vector.
        (Plugin_manager::claim_file): Create plugin object even if
        plugin did not call the add_symbols callback.
        (Plugin_obj::get_symbol_resolution_info): Guard against plugin
        asking for more symbols than were added.
        * testsuite/Makefile.am (plugin_test_1): Add test case with
        no global symbols.
        (empty.syms): New target.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/plugin_test.c (claim_file_hook): Add new debug
        message. Don't call add_symbols if no globals.
        (all_symbols_read_hook): Don't provide replacement for empty
        claimed file.

2008-12-12  Ian Lance Taylor  <iant@google.com>

        * target-reloc.h (Default_scan_relocatable_relocs): Only discard
        r_type == 0 for a local symbol with r_sym == 0.
        (scan_relocatable_relocs): Pass r_sym to
        local_non_section_strategy.
        * reloc.cc (Emit_relocs_strategy::local_non_section_strategy): Add
        r_sym parameter.

        * configure.ac: Update test for TLS descriptors: they are
        supported as of glibc 2.9.
        * configure: Rebuild.

2008-12-11  Ian Lance Taylor  <iant@google.com>

        PR 7091
        * target-reloc.h (Default_scan_relocatable_relocs): For each
        function, map r_type == 0 to RELOC_DISCARD.

2008-12-10  Cary Coutant  <ccoutant@google.com>

        * layout.cc (Layout::add_comdat): Allow COMDAT group from a replacement
        object to override a kept COMDAT group from a plugin object.

2008-12-09  Ian Lance Taylor  <iant@google.com>

        PR 7088
        * yyscript.y (file_cmd): Handle INPUT.

        * testsuite/initpri1.c: Change all declarations to be full
        prototypes by adding void, to avoid compiler warnings.

2008-12-05  Rafael Avila de Espindola  <espindola@google.com>

        * options.cc (General_options::parse_plugin_opt): New.
        (General_options::add_plugin): The argument now is just the filename.
        (General_options::add_plugin_option): New.
        * options.h (plugin_opt): New.
        (add_plugin): Change argument name.
        (add_plugin_option): New.
        * plugin.cc (Plugin::load): Don't parse the plugin option.
        * plugin.h (Plugin::Plugin): Rename argument. Init filename_.
        (Plugin::add_option): New.
        (Plugin::args_): Change type.
        (Plugin::filename_): New.
        (Plugin_manager::add_plugin_option): New.
        * testsuite/Makefile.am (plugin_test_1): Use new syntax.
        * testsuite/Makefile.in: Regenerate.

2008-12-05  Cary Coutant  <ccoutant@google.com>

        * layout.cc (Layout::include_section): Check for SHF_EXCLUDE.
        Handle --strip-lto-sections option.
        * options.h (strip_lto_sections): New option.

2008-12-01  Cary Coutant  <ccoutant@google.com>

        * plugin.cc (ld_plugin_message): Change format parameter to const.
        Fix mismatch between new[] and delete.

2008-11-14  Cary Coutant  <ccoutant@google.com>

        * reloc.cc (Sized_relobj::do_read_relocs): Use constant invalid_address
        instead of -1U.

2008-11-05  Craig Silverstein  <csilvers@google.com>

        * options.cc (General_options::parse_dynamic_list): New function.
        * options.h (General_options): New flags dynamic_list,
        dynamic_list_data, dynamic_list_cpp_new, and
        dynamic_list_cpp_typeinfo.  New variable dynamic_list_.
        (General_options::in_dynamic_list): New function.
        * script.cc (Lex::Mode): New enum DYNAMIC_LIST.
        (Lex::can_start_name): Add support for DYNAMIC_LIST mode.
        (Lex::can_continue_name): Likewise.
        (yylex): Likewise.
        (read_script_file): New parameter script_options.
        (read_dynamic_list): New function.
        (Script_options::define_dynamic_list): New function.
        (dynamic_list_keyword_parsecodes): New variable.
        (dynamic_list_keywords): New variable.
        * script.h (Script_options::define_dynamic_list): New function
        prototype.
        (read_dynamic_list): New function prototype.
        * symtab.cc (strprefix): New macro.
        (Symbol::should_add_dynsym_entry): Support dynamic_list,
        dynamic_list_data, dynamic_list_cpp_new, and
        dynamic_list_cpp_typeinfo.
        * yyscript.y (PARSING_DYNAMIC_LIST): New token.
        (dynamic_list_expr): New rule.
        (dynamic_list_nodes): Likewise.
        (dynamic_list_node): Likewise.
        * testsuite/Makefile.am (dynamic_list): New test.
        * testsuite/Makefile.in: Regenerated.
        * testsuite/dynamic_list.t: New file.
        * testsuite/dynamic_list.sh: New file.

2008-11-05  Craig Silverstein  <csilvers@google.com>

        * testsuite/tls_test_c.c: Add prototype for t11 and t11_last.
        * testsuite/tls_test_c.c (t11): Add explicit "void" to prototype.
        (t11_last): Likewise.
        * testsuite/ver_test_6.c (main): Likewise.

2008-10-07  Cary Coutant  <ccoutant@google.com>

        * options.c (General_options::finalize): Add check for -static and
        -shared.
        * gold.cc (queue_middle_tasks): Assert that list of dynamic objects
        is not empty.

2008-10-02  Cary Coutant  <ccoutant@google.com>

        * plugin.cc (make_sized_plugin_object): Fix conditional
        compilation to work when not all targets are enabled.

2008-09-29  Cary Coutant  <ccoutant@google.com>

        * archive.cc (Archive::get_file_and_offset): Use filename instead
        of name to get library path.
        (Archive::include_member): Unlock external member of a thin archive.

        * testsuite/Makefile.am (TEST_AR): New variable.
        (thin_archive_test_1): New test.
        (thin_archive_test_2): New test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/thin_archive_main.cc: New file.
        * testsuite/thin_archive_test_1.cc: New file.
        * testsuite/thin_archive_test_2.cc: New file.
        * testsuite/thin_archive_test_3.cc: New file.
        * testsuite/thin_archive_test_4.cc: New file.

2008-09-29  Cary Coutant  <ccoutant@google.com>

        * mapfile.cc (Mapfile::print_input_section): Change -1U to -1ULL.
        * object.cc (Sized_relobj::do_layout): Use constant invalid_address
        instead of -1U.
        (Sized_relobj::do_finalize_local_symbols): Likewise.
        (Sized_relobj::map_to_kept_section): Likewise.
        * object.h (Sized_relobj::invalid_address): New constant.
        (Sized_relobj::do_output_section_offset): Check for invalid_address
        and return -1ULL.
        * output.cc (Output_reloc::local_section_offset): Use constant
        invalid_address instead of -1U.
        (Output_reloc::get_address): Likewise.
        (Output_section::output_address): Change -1U to -1ULL.
        * output.h (Output_reloc::invalid_address): New constant.
        * reloc.cc (Sized_relobj::write_sections): Use constant
        invalid_address instead of -1U.
        (Sized_relobj::relocate_sections): Likewise.
        * symtab.cc (Symbol_table::sized_finalize_symbol): Handle symbol
        values for merge sections.
        * target-reloc.h (relocate_for_relocatable): Use constant
        invalid_address instead of -1U.

2008-09-19  Cary Coutant  <ccoutant@google.com>

        Add plugin functionality for link-time optimization (LTO).
        * configure.ac (plugins): Add --enable-plugins option.
        * configure: Regenerate.
        * config.in: Regenerate.
        * Makefile.am (LIBDL): New variable.
        (CCFILES): Add plugin.cc.
        (HFILES): Add plugin.h.
        (ldadd_var): Add LIBDL.
        * Makefile.in: Regenerate.

        * archive.cc: Include "plugin.h".
        (Archive::setup): Don't preread archive symbols when using a plugin.
        (Archive::get_file_and_offset): Add memsize parameter.  Change callers.
        (Archive::get_elf_object_for_member): Call plugin hooks for claiming
        files.
        (Archive::include_member): Add symbols from plugin objects.
        * archive.h (Archive::get_file_and_offset): Add memsize parameter.
        * descriptors.cc (Descriptors::open): Check for file descriptors
        abandoned by plugins.
        (Descriptors::claim_for_plugin): New function.
        * descriptors.h (Descriptors::claim_for_plugin): New function.
        (Open_descriptor::is_claimed): New field.
        (claim_descriptor_for_plugin): New function.
        * fileread.cc (File_read::claim_for_plugin): New function.
        * fileread.h (File_read::claim_for_plugin): New function.
        (File_read::descriptor): New function.
        * gold.cc: Include "plugin.h".
        (queue_initial_tasks): Add task to call plugin hooks for generating
        new object files.
        * main.cc: Include "plugin.h".
        (main): Load plugin libraries.
        * object.h (Pluginobj): Declare.
        (Object::pluginobj): New function.
        (Object::do_pluginobj): New function.
        (Object::set_target): New function.
        * options.cc: Include "plugin.h".
        (General_options::parse_plugin): New function.
        (General_options::General_options): Initialize plugins_ field.
        (General_options::add_plugin): New function.
        * options.h (Plugin_manager): Declare.
        (General_options): Add --plugin option.
        (General_options::has_plugins): New function.
        (General_options::plugins): New function.
        (General_options::add_plugin): New function.
        (General_options::plugins_): New field.
        * plugin.cc: New file.
        * plugin.h: New file.
        * readsyms.cc: Include "plugin.h".
        (Read_symbols::do_read_symbols): Check for archive before checking
        for ELF file.  Call plugin hooks to claim files.
        * resolve.cc (Symbol_table::resolve): Record when symbol is referenced
        from a real object file; force override when processing replacement
        files.
        * symtab.cc (Symbol::init_fields): Initialize in_real_elf_ field.
        (Symbol::init_base_object): Likewise.
        (Symbol::init_base_output_data): Likewise.
        (Symbol::init_base_output_segment): Likewise.
        (Symbol::init_base_constant): Likewise.
        (Symbol::init_base_undefined): Likewise.
        (Symbol::output_section): Assert that object is not a plugin.
        (Symbol_table::add_from_pluginobj): New function.
        (Symbol_table::sized_finalize_symbol): Treat symbols from plugins as
        undefined.
        (Symbol_table::sized_write_globals): Likewise.
        (Symbol_table::add_from_pluginobj): Instantiate template.
        * symtab.h (Sized_pluginobj): Declare.
        (Symbol::in_real_elf): New function.
        (Symbol::set_in_real_elf): New function.
        (Symbol::in_real_elf_): New field.
        (Symbol_table::add_from_pluginobj): New function.

        * testsuite/Makefile.am (AM_CFLAGS): New variable.
        (LIBDL): New variable.
        (LDADD): Add LIBDL.
        (check_PROGRAMS): Add plugin_test_1 and plugin_test_2.
        (check_SCRIPTS): Add plugin_test_1.sh and plugin_test_2.sh.
        (check_DATA): Add plugin_test_1.err and plugin_test_2.err.
        (MOSTLYCLEANFILES): Likewise.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/plugin_test.c: New file.
        * testsuite/plugin_test_1.sh: New file.
        * testsuite/plugin_test_2.sh: New file.

2008-09-16  Ian Lance Taylor  <iant@google.com>

        * target-reloc.h (relocate_section): Check whether a symbol is
        defined by the ABI before reporting an undefined symbol error.
        * target.h (Target::is_defined_by_abi): Make parameter const.
        (Target::do_is_defined_by_abi): Likewise.
        * i386.cc (Target_i386::do_is_defined_by_abi): Likewise.
        * powerpc.cc (Target_powerpc::do_is_defined_by_abi): Likewise.
        * sparc.cc (Target_sparc::do_is_defined_by_abi): Likewise.
        * x86_64.cc (Target_x86_64::do_is_defined_by_abi): Likewise.
        * testsuite/Makefile.am (tls_test_shared.so): Add -Wl,-z,defs.
        * testsuite/Makefile.in: Rebuild.

        * fileread.cc (make_view): Add casts to avoid warning.

2008-09-16  Alexandre Oliva  <aoliva@redhat.com>

        * i386.cc (Target_i386::define_tls_base_symbol): Update comments.
        * x86_64.cc (Target_x86_64::define_tls_base_symbol): Likewise.

2008-09-16  Alexandre Oliva  <aoliva@redhat.com>

        * options.h (General_options::output_is_executable): New.
        (General_options::output_is_pie): New.
        * i386.cc (Target_i386::define_tls_base_symbol): Use SEGMENT_START
        for shared libraries.
        * x86_64.cc (Target_x86_64::define_tls_base_symbol): Likewise.

2008-09-11  Chris Demetriou  <cgd@google.com>

        * options.h (origin): New -z option.
        * layout.cc (Layout:finish_dynamic_section): If "-z origin"
        is specified, set DF_ORIGIN in DT_FLAGS and set DF_1_ORIGIN
        in DT_FLAGS_1.

2008-09-05  Cary Coutant  <ccoutant@google.com>

        * fileread.cc (File_read::make_view): Add check for attempt to map
        beyond end of file.

2008-09-05  Cary Coutant  <ccoutant@google.com>

        * symtab.cc (Symbol_table::add_from_dynobj): Fix typos in
        explicit instantiations.

2008-08-28  Kris Van Hees  <kris.van.hees@oracle.com>

        PR gold/6858
        * options.cc (General_options::finalize): Allow undefined symbols
        in shlibs if linking -shared.

        PR gold/6859
        * symtab.cc (Symbol::init_base_undefined): Mark explicitly undefined
        symbols as not needing a dynsym entry.

2008-08-20  Craig Silverstein  <csilvers@google.com>

        * fileread.cc (File_read::open): Do not lock the file unless it
        was successfully opened.

2008-08-14  Cary Coutant  <ccoutant@google.com>

        * x86_64.cc (Target_x86_64::Relocate::relocat_tls):
        Use addend for DTPOFF32, DTPOFF64, and TPOFF32 relocs.
        * testsuite/tls_test.cc (struct int128): 128-bit struct
        for testing TLS relocs with non-zero addend.
        (v12): New TLS variable.
        (t12): New test.
        (t_last): Add check for v12.
        * testsuite/tls_test.h (t12): New function.
        * testsuite/tls_test_main.cc (thread_routine): Call new test.

2008-08-13  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::attach_allocated_section_to_segment): Don't
        set tls_segment_ or relro_segment_.
        (Layout::make_output_segment): Set tls_segment_ and relro_segment_
        when appropriate.
        * output.h (Output_section::clear_is_relro): New function.
        * output.cc (Output_segment::add_output_section): Handle SHF_TLS
        sections specially even when output_data_ is empty.
        (Output_segment::maximum_alignment): When first section is relro,
        only force alignment for PT_LOAD segments.
        * script.cc (script_data_segment_align): New function.
        (script_data_segment_relro_end): New function.
        * script-c.h (script_data_segment_align): Declare.
        (script_data_segment_relro_end): Declare.
        * script-sections.h (class Script_sections): Declare
        data_segment_align and data_segment_relro_end.  Add fields
        segment_align_index_ and saw_relro_end_.
        * script-sections.cc (class Sections_element): Add set_is_relro
        virtual function.  Add new bool* parameter to place_orphan_here.
        Add get_output_section virtual function.
        (class Output_section_definition): Add set_is_relro.  Add new
        bool* parameter to place_orphan_here.  Add get_output_section.
        Add is_relro_ field.
        (Output_section_definition::Output_section_definition): Initialize
        evaluated_address_, evaluated_load_address, evaluated_addralign_,
        and is_relro_ fields.
        (Output_section_definition::place_orphan_here): Add is_relro
        parameter.
        (Output_section_definition::set_section_addresses): Set relro for
        output section.
        (Output_section_definition::alternate_constraint): Likewise.
        (class Orphan_output_section): Add new bool* parameter to
        place_orphan_here.  Add get_output_section.
        (Orphan_output_section::place_orphan_here): Add is_relro
        parameter.
        (Script_sections::Script_sections): Initialize
        data_segment_align_index_ and saw_relro_end_.
        (Script_sections::data_segment_align): New function.
        (Script_sections::data_segment_relro_end): New function.
        (Script_sections::place_orphan): Set or clear is_relro.
        (Script_sections::set_section_addresses): Force alignment of first
        TLS section.
        * yyscript.y (exp): Call script_data_segment_align and
        script_data_segment_relro_end.
        * testsuite/relro_script_test.t: New file.
        * testsuite/relro_test.cc (using_script): Declare.
        (t1, t2): Test using_script.
        * testsuite/Makefile.am (check_PROGRAMS): Add relro_script_test.
        (relro_script_test_SOURCES): Define.
        (relro_script_test_DEPENDENCIES): Define.
        (relro_script_test_LDFLAGS): Define.
        (relro_script_test_LDADD): Define.
        (relro_script_test.so): New target.
        * testsuite/Makefile.in: Rebuild.

2008-08-06  Cary Coutant <ccoutant@google.com>

        * archive.cc (Archive::total_archives, Archive::total_members)
        (Archive::total_members_loaded): New variables.
        (Archive::setup): Add parameter.  Add option to preread
        archive symbols.
        (Archive::read_armap): Add counter.
        (Archive::get_file_and_offset): New function.
        (Archive::get_elf_object_for_member): New function.
        (Archive::read_all_symbols): New function.
        (Archive::read_symbols): New function.
        (Archive::add_symbols): Add counters.
        (Archive::include_all_members): Use armap to find members if it's
        already built.
        (Archive::include_member): Skip reading symbols if already read.
        Factored code into Archive::get_file_and_offset and
        Archive::get_elf_object_for_member.  Changed call to
        Mapfile::report_include_archive_member.
        (Archive::print_stats): New function.
        * archive.h: Declare Object and Read_symbols_data classes.
        (Archive::Archive): Add initializers for new members.
        (Archive::setup): Add parameter.
        (Archive::print_stats): New function.
        (Archive::total_archives, Archive::total_members)
        (Archive::total_members_loaded): New variables.
        (Archive::get_file_and_offset): New function.
        (Archive::get_elf_object_for_member): New function.
        (Archive::read_all_symbols): New function.
        (Archive::read_symbols): New function.
        (Archive::Archive_member): New class.
        (Archive::members_): New member.
        (Archive::num_members_): New member.
        * main.cc: Include archive.h.
        (main): Call Archive::print_stats.
        * mapfile.cc (Mapfile::report_include_archive_member): Delete
        archive parameter; member_name is now the fully-decorated name.
        * mapfile.h (Mapfile::report_include_archive_member): Likewise.
        * options.h: (General_options): Add --preread-archive-symbols option.
        * readsyms.cc (Read_symbols::do_read_symbols): Change call to
        Archive::setup.

2008-08-04  Ian Lance Taylor  <iant@google.com>

        * symtab.h (Symbol::use_plt_offset): New function.
        * i386.cc (Relocate::relocate): Call Symbol::use_plt_offset.
        * powerpc.cc (Relocate::relocate): Likewise.
        * sparc.cc (Relocate::relocate): Likewise.
        * x86_64.cc (Relocate::relocate): Likewise.
        * testsuite/weak_plt.sh: New test.
        * testsuite/weak_plt_main.cc: New test.
        * testsuite/weak_plt_shared.cc: New test.
        * testsuite/Makefile.am (check_SCRIPTS): Add weak_plt.sh.
        (check_PROGRAMS): Add weak_plt.
        (check_DATA): Add weak_plt_shared.so.
        (weak_plt_main_pic.o, weak_plt): New targets.
        (weak_plt_shared_pic.o, weak_plt_shared.so): New targets.
        * testsuite/Makefile.in: Rebuild.

        * testsuite/Makefile.am (weak_alias_test_1.so): Depend upon
        gcctestdir/ld.
        (weak_alias_test_2.so, weak_alias_test_4.so): Likewise.
        * testsuite/Makefile.in: Rebuild.

2008-08-04  Alan Modra  <amodra@bigpond.net.au>

        * Makefile.am (POTFILES.in): Set LC_ALL=C.
        * Makefile.in: Regenerate.
        * po/POTFILES.in: Regenerate.

2008-07-29  Ian Lance Taylor  <iant@google.com>

        * script.cc (Script_options::finalize_symbols): Finalize SECTIONS
        symbols before other symbols.
        * testsuite/script_test_2.cc (test_addr): Declare.
        (test_addr_alias): Declare.
        (main): Check that test_addr and test_addr_alias have the right
        values.
        * testsuite/script_test_2.t: Define test_addr_alias and
        test_addr.

2008-07-24  Ian Lance Taylor  <iant@google.com>

        PR 5990
        * descriptors.cc: New file.
        * descriptors.h: New file.
        * gold-threads.h (class Hold_optional_lock): New class.
        * fileread.cc: Include "descriptors.h".
        (File_read::~File_read): Release descriptor rather than closing
        it.
        (File_read::open) [file]: Call open_descriptor rather than open.
        Set is_descriptor_opened_.
        (File_read::open) [memory]: Assert that descriptor is not open.
        (File_read::reopen_descriptor): New function.
        (File_read::release): Release descriptor.
        (File_read::do_read): Make non-const.  Reopen descriptor.
        (File_read::read): Make non-const.
        (File_read::make_view): Reopen descriptor.
        (File_read::do_readv): Likewise.
        * fileread.h (class File_read): Add is_descriptor_opened_ field.
        Update declarations.
        * layout.cc: Include "descriptors.h".
        (Layout::create_build_id): Use open_descriptor rather than open.
        * output.cc: Include "descriptors.h".
        (Output_file::open): Use open_descriptor rather than open.
        * archive.cc (Archive::const_iterator): Change Archive to be
        non-const.
        (Archive::begin, Archive::end): Make non-const.
        (Archive::count_members): Likewise.
        * archive.h (class Archive): Update declarations.
        * object.h (Object::read): Make non-const.
        * Makefile.am (CCFILES): Add descriptors.cc.
        (HFILES): Add descriptors.h.
        * Makefile.in: Rebuild.

        PR 6716
        * gold.h: Always include <clocale>.  Add Solaris workarounds
        following code in binutils/sysdep.h.

        PR 6048
        * ehframe.cc (Eh_frame::add_ehframe_input_section): Check whether
        this->eh_frame_hdr_ is NULL before using it.

        * dynobj.cc (Versions::Versions): Update comment.

        * dynobj.cc (Versions::Versions): If there is an soname, use it as
        the base version name.

        * stringpool.cc (Stringpool_template::add_with_length): Set key to
        array size plus one.
        (Stringpool_template::set_string_offsets): Subtract one from key
        before using it as an array index.
        (Stringpool_template::get_offset_with_length): Likewise.
        (Stringpool_template::write_to_buffer): Likewise.
        * stringpool.h (Stringpool_template::get_offset_from_key):
        Likewise.

2008-07-23  Ian Lance Taylor  <iant@google.com>

        PR 6658
        * object.h (Merged_symbol_value::value): Do our best to handle a
        negative addend.

        PR 6647
        * script.cc (Version_script_info::get_versions): Don't add empty
        version tag to return value.
        (Version_script_info::get_symbol_version_helper): Change return
        type to bool.  Add pversion parameter.  Change all callers.
        (script_register_vers_node): Don't require a non-NULL tag.
        * script.h (class Version_script_info): Update declarations.
        (Version_script_info::get_symbol_version): Change return type to
        bool.  Add version parameter.  Change all callers.
        * symtab.cc (Sized_symbol::add_from_relobj): Rework version
        handling.  Handle an empty version from a version script.
        (Symbol_table::define_special_symbol): Likewise.
        * testsuite/ver_test_10.script: New file.
        * testsuite/ver_test_10.sh: New file.
        * testsuite/Makefile.am (check_SCRIPTS): Add ver_test_10.sh.
        (check_DATA): Add ver_test_10.syms.
        (ver_test_10.syms, ver_test_10.so): New target.
        * testsuite/Makefile.in: Rebuild.

2008-07-23  Simon Baldwin  <simonb@google.com>

        * symtab.cc (Symbol_table::sized_write_symbol): Only set st_size
        to zero for undefined symbols from dynamic libraries.

2008-07-23  Ian Lance Taylor  <iant@google.com>

        * symtab.cc (Symbol_table::resolve): Remove version parameter.
        Change all callers.
        * symtab.h (class Symbol_table): Update declaration.
        * testsuite/ver_test_9.cc: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add ver_test_9.
        (ver_test_9_SOURCES, ver_test_9_DEPENDENCIES): Define.
        (ver_test_9_LDFLAGS, ver_test_9_LDADD): Define.
        (ver_test_9.so, ver_test_9.o): New targets.
        * testsuite/Makefile.in: Rebuild.

2008-07-22  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Define --check-sections.
        * layout.cc (Layout::set_segment_offsets): Handle
        --check-sections.

        * options.h (class General_options): Define -n/--nmagic and
        -N/--omagic.
        * options.cc (General_options::finalize): For -n/--nmagic or
        -N/--omagic, set -static.
        * layout.cc (Layout::attach_allocated_section_to_segment): If
        -N/--omagic, don't put read-only and read-write sections in
        different segments.
        (Layout::find_first_load_seg): If -N/--omagic, don't insist on
        finding a read-only segment.
        (Layout::set_segment_offsets): If -N/--omagic or -n/--nmagic,
        don't set the minimum segment alignment to the common page size,
        and don't set the file offset to the address modulo the page size.
        * script-sections.cc (Script_sections::create_segments): If
        -n/--omagic, don't put read-only and read-write sections in
        different segments.

        * cref.cc: New file.
        * cref.h: New file.
        * options.h (class General_options): Add --print-symbol-counts.
        * main.cc (main): Issue defined symbol report if requested.
        * archive.cc (Archive::interpret_header): Make into a const member
        function.
        (Archive::add_symbols): Call Input_objects::archive_start and
        archive_stop.
        (Archive::const_iterator): Define new class.
        (Archive::begin, Archive::end): New functions.
        (Archive::include_all_members): Rewrite to use iterator.
        (Archive::count_members): New function.
        * archive.h (class Archive): Update declarations.
        (Archive::filename): New function.
        * object.cc: Include "cref.h".
        (Sized_relobj::Sized_relobj): Initialize defined_count_.
        (Sized_relobj::do_get_global_symbol_counts): New function.
        (Input_objects::add_object): Add object to cross-referencer.
        (Input_objects::archive_start): New function.
        (Input_objects::archive_stop): New function.
        (Input_objects::print_symbol_counts): New function.
        * object.h: Declare Cref and Archive.
        (Object::get_global_symbol_counts): New function.
        (Object::do_get_global_symbol_counts): New pure virtual function.
        (class Sized_relobj): Add defined_count_ field.  Update
        declarations.
        (class Input_objects): Add cref_ field.  Update constructor.
        Update declarations.
        * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize symbols_ and
        defined_count_.
        (Sized_dynobj::do_add_symbols): Allocate symbols_ if printing
        symbol counts.
        (Sized_dynobj::do_get_global_symbol_counts): New function.
        * dynobj.h (class Sized_dynobj): Add fields symbols_ and
        defined_count_.  Update declarations.  Define Symbols typedef.
        * symtab.cc (Symbol_table::add_from_relobj): Add defined
        parameter.  Change all callers.
        (Symbol_table::add_from_dynobj): Add sympointers and defined
        parameters.  Change all callers.
        * symtab.h (class Symbol_table): Update declarations.
        * Makefile.am (CCFILES): Add cref.cc.
        (HFILES): Add cref.h.
        * Makefile.in: Rebuild.

2008-07-22  Simon Baldwin  <simonb@google.com>

        * symtab.cc (Symbol_table::sized_write_symbol): Set symbol size
        to zero when writing undefined symbols.

2008-07-22  Ian Lance Taylor  <iant@google.com>

        * output.cc (Output_section::add_input_section): Don't try to
        merge empty merge sections.

2008-07-21  Craig Silverstein  <csilvers@google.com>

        * symtab.cc (Symbol_table::warn_about_undefined_dynobj_symbol):
        Include symbol version in error message.

2008-07-20  Chris Demetriou  <cgd@google.com>

        * configure.ac (gold_cv_c_random_seed): New configured variable.
        (RANDOM_SEED_CFLAGS): New substituted variable.
        * Makefile.am (AM_CFLAGS, AM_CXXFLAGS): Add $(RANDOM_SEED_CFLAGS).
        * configure: Rebuild.
        * Makefile.in: Likewise.
        * testsuite/Makefile.in: Likewise.

2008-07-18  Ian Lance Taylor  <iant@google.com>

        * symtab.cc (Symbol_table::add_from_object): Rewrite the case
        where we see NAME/NULL and NAME/VERSION  as separate symbols.
        * testsuite/ver_test_main.cc (main): Call t4.
        (t4, t4_2a): Define.
        * testsuite/ver_test_2.cc (t4_2): Define.
        * testsuite/ver_test_2.script: Put t4_2a in VER2.
        * testsuite/ver_test_4.cc (t4_2a): Define.
        * testsuite/ver_test_4.script: Put t4_2a in VER2.
        * testsuite/ver_test.h (t4, t4_2, t4_2a): Declare.

2008-07-17  Ian Lance Taylor  <iant@google.com>

        * dynobj.cc (Versions::add_def): If we give an error about a
        missing version, go ahead and create the version anyhow.

2008-07-10  Ian Lance Taylor  <iant@google.com>

        Handle output sections with more than 0x7fffffff bytes.
        * object.h (class Relobj): Change map_to_output_ to
        output_sections_, and just keep a section pointer.  Change all
        uses.  Move comdat group support to Sized_relobj.
        (Relobj::is_section_specially_mapped): Remove.
        (Relobj::output_section): Remove poff parameter.  Change all
        callers.
        (Relobj::output_section_offset): New function.
        (Relobj::set_section_offset): Rewrite.
        (Relobj::map_to_output): Remove.
        (Relobj::output_sections): New function.
        (Relobj::do_output_section_offset): New pure virtual function.
        (Relobj::do_set_section_offset): Likewise.
        (class Sized_relobj): Add section_offsets_ field.  Add comdat
        group support from Relobj.  Update declarations.
        (Sized_relobj::get_output_section_offset): New function.
        (Sized_relobj::do_output_section_offset): New function.
        (Sized_relobj::do_set_section_offset): New function.
        * object.cc (Relobj::output_section_address): Remove.
        (Sized_relobj::Sized_relobj): Initialize new fields.
        (Sized_relobj::include_section_group): Cast find_kept_object to
        Sized_relobj.
        (Sized_relobj::include_linkonce_section): Likewise.
        (Sized_relobj::do_layout): Use separate arrays for output section
        and output offset.
        (Sized_relobj::do_count_local_symbols): Change map_to_output to
        output_sections.
        (Sized_relobj::do_finalize_local_symbols): Change map_to_output to
        output_sections and section_offsets.
        (Sized_relobj::write_local_symbols): Likewise.
        (map_to_kept_section): Compute output address directly.
        * reloc.cc (Sized_relobj::do_read_relocs): Change map_to_output to
        output_sections and section_offsets.
        (Sized_relobj::write_sections): Likewise.
        (Sized_relobj::relocate_sections): Likewise.
        * symtab.cc (sized_finalize_symbol): Use output_section_offset.
        * output.h (class Output_reloc): Update declarations.  Change
        u2_.relobj to Sized_relobj*.
        (class Output_data_reloc): Change add functions to use
        Sized_relobj*.
        * output.cc (Output_reloc::Output_reloc): Change relobj to
        Sized_relobj*.
        (Output_reloc::local_section_offset): Change return type to
        Elf_Addr.  Use get_output_section_offset.
        (Output_reloc::get_address): Likewise.
        (Output_section::is_input_address_mapped): Don't call
        is_section_specially_mapped.
        (Output_section::output_offset): Likewise.
        (Output_section::output_address): Likewise.
        (Output_section::starting_output_address): Likewise.
        * copy-relocs.cc (Copy_relocs::copy_reloc): Change object
        parameter to Sized_relobj*.
        (Copy_relocs::need_copy_reloc): Likewise.
        (Copy_relocs::save): Likewise.
        * copy-relocs.h (class Copy_relocs): Update declarations.
        (class Copy_relocs::Copy_reloc_entry): Change constructor to use
        Sized_relobj*.  Change relobj_ field to Sized_relobj*.
        * target-reloc.h (relocate_for_relocatable): Change
        offset_in_output_section type to Elf_Addr.  Change code that uses
        it as well.
        * layout.cc (Layout::layout): Always set *off.
        * mapfile.cc (Mapfile::print_input_section): Use
        output_section_offset.
        * i386.cc (Target_i386::copy_reloc): Change object parameter to
        Sized_relobj*.
        * powerpc.cc (Target_powerpc::copy_reloc): Likewise.
        * sparc.cc (Target_sparc::copy_reloc): Likewise.
        * x86_64.cc (Target_x86_64::copy_reloc): Likewise.

2008-07-03  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::include_section): Do not discard unrecognized
        SHT_STRTAB sections.

2008-06-30  Craig Silverstein  <csilvers@cs.stanford.edu>

        * script.cc (Lex::can_continue_name): Make '?' allowable in
        version-script names.
        * testsuite/version_script.map: Change glob pattern to use '?'

2008-06-30  Manish Singh  <yosh@gimp.org>

        PR 6585
        * symtab.cc (Symbol_table::add_undefined_symbols_from_command_line):
        Correct typo.

2008-06-30  Ian Lance Taylor  <iant@google.com>

        PR 6660
        PR 6682
        * powerpc.cc (Powerpc_relocate_functions::addr16_ha) [both
        versions]: Don't try to read the value in the contents, since we
        don't use it.  Use the template endianness when writing.

2008-06-25  Cary Coutant  <ccoutant@google.com>

        * fileread.cc (File_read::make_view): Assert on zero-length view.
        * object.cc (Sized_relobj::do_read_symbols): Don't try to read
        symbol table when there are no symbols to read.

2008-06-23  Craig Silverstein  <csilvers@google.com>

        * version.cc (version_string): Bump to 1.7

2008-06-18  Craig Silverstein  <csilvers@google.com>

        * powerpc.cc (Powerpc_relocate_functions::addr16_ha): cast
        constant 0xFFFF to type Valtype.
        (Powerpc_relocate_functions::rel16_ha): Likewise.

2008-06-17  Ian Lance Taylor  <iant@google.com>

        * output.h (Output_section::Input_section): Initialize p2align_ to
        zero for Output_section_data constructors.
        (Output_section::Input_section::addralign): If not an input
        section, return the alignment of the Output_section_data.
        * testsuite/copy_test.cc: New file.
        * testsuite/copy_test_1.cc: New file.
        * testsuite/copy_test_2.cc: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add copy_test.
        (copy_test_SOURCES, copy_test_DEPENDENCIES): New variables.
        (copy_test_LDFLAGS, copy_test_LDADD): New variables.
        (copy_test_1_pic.o, copy_test_1.so): New targets.
        (copy_test_2_pic.o, copy_test_2.so): New targets.
        * testsuite/Makefile.in: Rebuild.

        * script-sections.cc (Script_sections::place_orphan): Initialize
        local variable exact.

2008-06-13  David Edelsohn  <edelsohn@gnu.org>

        * powerpc.cc (Output_data_plt_powerpc::do_write): 8 + 4 = 0xC.

2008-06-12  David Edelsohn  <edelsohn@gnu.org>
            David S. Miller  <davem@davemloft.net>

        * powerpc.cc: New file.
        * Makefile.am (TARGETSOURCES): Add powerpc.cc
        (ALL_TARGETOBJS): Add powerpc.$(OBJEXT)
        * configure.tgt: Add entries for powerpc-* and powerpc64-*.
        * Makefile.in: Rebuild.

2008-06-09  Ian Lance Taylor  <iant@google.com>

        * testsuite/relro_test.cc: Include <cstdio>, <cstdlib>, and
        <exception>.
        (throwing, orig_terminate): New static variables.
        (terminate_handler): New static function.
        (t2): Set terminate handler.

2008-06-05  Kris Van Hees  <kris.van.hees@oracle.com>

        PR 6584
        * binary.cc (Binary_to_elf::sized_convert): Fix .data
        alignment.

2008-05-30  Cary Coutant  <ccoutant@google.com>

        * archive.cc (Archive::include_all_members) Correct to step
        over symbol table and extended name table in thin archives.

2008-05-29  Kris Van Hees  <kris.van.hees@oracle.com>

        PR 6407
        * target-reloc.h (relocate_for_relocatable): Fix new_offset
        calculation.

2008-05-28  Caleb Howe  <cshowe@google.com>

        * reduced_debug_output.cc: New file.
        * reduced_debug_output.h: New file.
        * options.h (class General_options): Add --strip-debug-non-line.
        * options.cc (General_options::finalize): Add strip_debug_non_line
        to the strip heirarchy.
        * layout.h (class Layout): Add debug_abbrev_ and debug_info_
        fields.
        * layout.cc: Include "reduced_debug_output.h".
        (Layout::Layout): Initialize new fields.
        (line_only_debug_sections): New static array.
        (is_lines_only_debug_sections): New static inline function.
        (Layout::include_section): Handle --strip-debug-non-line.
        (Layout::make_output_section): If --strip-debug-non-line, build
        new output sections for .debug_abbrev and .debug_info.
        * dwarf_reader.cc (read_unsigned_LEB_128): Move to namespace
        gold.  Warn about possible overflow.
        (read_signed_LEB_128): Likewise.
        * dwarf_reader.h: (read_unsigned_LEB_128): Declare.
        (read_signed_LEB_128): Declare.
        * Makefile.am (CCFILES): Add reduced_debug_output.cc.
        (HFILES): Add reduced_debug_output.h.
        * Makefile.in: Rebuild.

2008-05-21  Ian Lance Taylor  <iant@google.com>

        * mapfile.cc: New file.
        * mapfile.h: New file.
        * options.h (class General_options): Add -M/--print-map and -Map.
        * options.cc (General_options::finalize): Make -M equivalent to
        -Map -.
        * main.cc: Include <cstdio> and "mapfile.h".
        (main): Open mapfile if requested.
        * gold.cc (class Middle_runner): Add mapfile_ field.  Update
        constructor.  Change caller.
        (queue_initial_tasks): Add mapfile parameter.  Change caller.
        (queue_middle_tasks): Likewise.
        * gold.h (queue_initial_tasks, queue_middle_tasks): Update
        declarations.
        * archive.cc: Include "mapfile.h".
        (Archive::add_symbols): Add mapfile parameter.  Change all
        callers.  Pass mapfile, symbol, and reason to include_member.
        (Archive::include_all_members): Add mapfile parameter.  Change all
        callers.
        (Archive::include_member): Add mapfile, sym, and why parameters.
        Change all callers.  Report inclusion to map file.
        * archive.h: Include "fileread.h".
        (class Archive): Update declarations.
        (Archive::file): New const method.
        (class Add_archive_symbols): Add mapfile_ field.  Update
        constructor.  Change all callers.
        * readsyms.h (class Read_symbols): Likewise.
        (class Finish_group): Likewise.
        (class Read_script): Likewise.
        * common.cc: Include "mapfile.h".
        (Symbol_table::allocate_commons): Add mapfile parameter.  Change
        all callers.
        (Symbol_table::do_allocate_commons): Likewise.
        (Symbol_table::do_allocate_commons_list): Likewise.  Report common
        symbol allocation to mapfile.
        * common.h (class Allocate_commons_task): Add mapfile_ field.
        Update constructor.  Change all callers.
        * symtab.h (class Symbol_table): Update declarations.
        * layout.cc: Include "mapfile.h".
        (Layout_task_runner::run): Print information to mapfile.
        (Layout::create_gold_note): Change Output_data_fixed_space to
        Output_data_zero_fill.
        (Layout::create_build_id): Likewise.
        (Layout::print_to_mapfile): New function.
        * layout.h (class Layout_task_runner): Add mapfile_ field.  Update
        constructor.  Change caller.
        (class Layout): Declare print_to_mapfile.
        * output.cc (Output_section::Input_section::print_to_mapfile): New
        function.
        (Output_section::add_input_section): If producing a map, always
        add to input_sections_ list.
        (Output_section::do_print_to_mapfile): New function.
        (Output_segment::print_sections_to_mapfile): New function.
        (Output_segment::print_section_list_to_mapfile): New function.
        * output.h: Include "mapfile.h".
        (Output_data::print_to_mapfile): New function.
        (Output_data::do_print_to_mapfile): New virtual function.
        (Output_segment_headers::do_print_to_mapfile): New function.
        (Output_file_header::do_print_to_mapfile): New function.
        (Output_data_const::do_print_to_mapfile): New function.
        (class Output_data_const_buffer): Add map_name_ field.  Update
        constructor.  Change all callers.  Add do_print_to_mapfile
        function.
        (class Output_data_fixed_space): Likewise.
        (class Output_data_space): Likewise.
        (class Output_data_zero_fill): New class.
        (Output_data_strtab::do_print_to_mapfile): New function.
        (Output_data_reloc_base::do_print_to_mapfile): New function.
        (Output_relocatable_relocs::do_print_to_mapfile): New function.
        (Output_data_group::do_print_to_mapfile): New function.
        (Output_data_got::do_print_to_mapfile): New function.
        (Output_data_dynamic::do_print_to_mapfile): New function.
        (Output_symtab_xindex::do_print_to_mapfile): New function.
        (class Output_section): Declare do_print_to_mapflie.  Declare
        print_to_mapfile in Input_section.
        (class Output_segment): Declare new functions.
        * object.h (Sized_relobj::symbol_count): New function.
        * script-sections.cc
        (Output_section_element_dot_assignment::set_section_addresses):
        Change Output_data_fixed_space to Output_data_zero_fill.
        (Output_data_expression::do_print_to_mapfile): New function.
        * script.cc (read_input_script): Add mapfile parameter.  Change
        all callers.
        * script.h (read_input_script): Update declaration.
        * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function.
        (Eh_frame::do_print_to_mapfile): New function.
        * merge.h (Output_merge_data::do_print_to_mapfile): New function.
        (Output_merge_string::do_print_to_mapfile): New function.
        * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New
        function.
        * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New
        function.
        * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New
        function.
        * Makefile.am (CCFILES): Add mapfile.cc.
        (HFILES): Add mapfile.h.
        * Makefile.in: Rebuild.

2008-05-19  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Add -z relro.
        * layout.cc (Layout::Layout): Initialize relro_segment_.
        (Layout::add_output_section_data): Return the output section.
        (Layout::make_output_section): Rcognize relro sections and mark
        them appropriately.
        (Layout::attach_allocated_section_to_segment): Put relro sections
        in a PT_GNU_RELRO segment.
        (Layout::create_initial_dynamic_sections): Mark the .dynamic
        section as relro.
        (Layout::segment_precedes): Sort PT_GNU_RELRO segments after
        PT_TLS segments.
        (Layout::linkonce_mapping): Map d.rel.ro.local to
        .data.rel.ro.local.
        (Layout::output_section_name): Us .data.rel.ro.local for any
        section which begins with that.
        * layout.h (class Layout): Update add_output_section_data
        declaration.  Add relro_segment_ field.
        * output.cc (Output_section::Output_section): Initialize is_relro_
        and is_relro_local_ fields.
        (Output_segment::add_output_section): Group relro sections.
        (Output_segment::is_first_section_relro): New function.
        (Output_segment::maximum_alignment): If there is a relro section,
        align the segment to the common page size.
        (Output_segment::set_section_addresses): Track whether we are
        looking at relro sections.  If the last section is a relro
        section, align to the common page size.
        (Output_segment::set_section_list_addresses): Add in_relro
        parameter.  Change all callers.  Align to the page size when
        moving from relro to non-relro section.
        (Output_segment::set_offset): Align memsz of a PT_GNU_RELRO
        segment.
        * output.h (class Output_section): Add is_relro_ and
        is_relro_local_ fields.
        (Output_section::is_relro): New function.
        (Output_section::set_is_relro): New function.
        (Output_section::is_relro_local): New function.
        (Output_section::set_is_relro_local): New function.
        (class Output_segment): Update declarations.
        * i386.cc (Target_i386::got_section): Mark .got section as relro.
        * sparc.cc (Target_sparc::got_section): Likewise.
        * x86_64.cc (Target_x86_64::got_section): Likewise.
        * testsuite/relro_test_main.cc: New file.
        * testsuite/relro_test.cc: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add relro_test.
        (relro_test_SOURCES, relro_test_DEPENDENCIES): New variables.
        (relro_test_LDFLAGS, relro_test_LDADD): New variables.
        (relro_test.so, relro_test_pic.o): New targets.
        * testsuite/Makefile.in: Rebuild.

2008-05-16  Ian Lance Taylor  <iant@google.com>

        * output.cc (Output_segment::add_output_section): Remove front
        parameter.
        * output.h (class Output_segment): Remove
        add_initial_output_section and overloaded add_output_section.
        Update declaration of remaining add_output_section.
        * layout.cc (Layout::create_interp): Call add_output_section
        rather than add_initial_output_section.
        (Layout::finish_dynamic_section): Likewise.

        * i386.cc (Target_i386::Relocate::relocate_tls): Set dynamic type
        for TLS_GOTDESC and TLS_DESC_CALL.  Only optimize TLS_LDO_32 if we
        know the dynamic type.
        * x86_64.cc (Target_x86_64::Relocate): Add saw_tls_block_reloc_
        field.  Initialize it in constructor.
        (Target_x86_64::Relocate::relocate_tls): Record that we saw a TLS
        block reloc for TLSGD, GOTPC32_TLSDESC, TLSDESC_CALL, and TLSLD.
        Only optimize DTPOFF32 and DTPOFF64 if we have seen a TLS block
        reloc.

        * output.cc (Output_reloc::get_address): Change return type to
        Elf_Addr.
        * output.h (class Output_reloc): Update get_address declaration.
        * x86_64.cc (Output_data_plt_x86_64::do_write): Use 64-bit types
        for section addresses.

2008-05-09  Ian Lance Taylor  <iant@google.com>

        PR 6493
        * gold.cc (gold_nomem): Use return value of write.

2008-05-08  Ian Lance Taylor  <iant@google.com>

        * symtab.c (Symbol::init_base_output_data): Add version
        parameter.  Change all callers.
        (Symbol::init_base_output_segment): Likewise.
        (Symbol::init_base_constant): Likewise.
        (Symbol::init_base_undefined): Likewise.
        (Sized_symbol::init_output_data): Likewise.
        (Sized_symbol::init_output_segment): Likewise.
        (Sized_symbol::init_constant): Likewise.
        (Sized_symbol::init_undefined): Likewise.
        (Symbol_table::do_define_in_output_data): If the new symbol has a
        version, mark it as the default.
        (Symbol_table::do_define_in_output_segment): Likewise.
        (Symbol_table::do_define_as_constant): Likewise.
        * symtab.h (class Symbol): Update declarations.
        (class Sized_symbol): Likewise.
        * resolve.cc (Symbol::override_version): New function.
        (Symbol::override_base): Call override_version.
        (Symbol::override_base_with_special): Likewise.
        * testsuite/ver_script_8.script: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add ver_test_8.
        (ver_test_8_SOURCES, ver_test_8_DEPENDENCIES): Define.
        (ver_test_8_LDFLAGS, ver_test_8_LDADD): Define.
        (ver_test_8_1.so, ver_test_8_2.so): New targets.

2008-05-06  Ian Lance Taylor  <iant@google.com>

        PR 6049
        * options.h (DEFINE_set): Add VARNAME_begin and VARNAME_end
        functions.
        (class General_options): Remove existing --undefined, and add
        --no-undefined instead.  Add new --undefined as synonym for -u.
        * archive.cc (Archive::add_symbols): Check whether symbol was
        named with -u.
        * gold.cc (queue_middle_tasks): Add -u symbols to symbol table.
        * symtab.h (class Symbol): Rename CONSTANT to IS_CONSTANT; change
        all uses.  Add IS_UNDEFINED.  Update declarations to split
        different versions of init_base.  Declare init_base_undefined.
        (Symbol::is_defined): Handle IS_UNDEFINED.
        (Symbol::is_undefined): Likewise.
        (Symbol::is_weak_undefined): Call is_undefined.
        (Symbol::is_absolute): Handle IS_CONSTANT.
        (class Sized_symbol): Update declarations to split different
        versions of init.  Declare init_undefined.
        (class Symbol_table): Declare new functions.
        * symtab.cc (Symbol::init_base_object): Rename from init_base.
        Change all callers.
        (Symbol::init_base_output_data): Likewise.
        (Symbol::init_base_output_segment): Likewise.
        (Symbol::init_base_constant): Likewise.
        (Symbol::init_base_undefined): New function.
        (Sized_symbol::init_object): Rename from init.  Change all
        callers.
        (Sized_symbol::init_output_data): Likewise.
        (Sized_symbol::init_output_segment): Likewise.
        (Sized_symbol::init_constant): Likewise.
        (Sized_symbol::init_undefined): New function.
        (Symbol_table::add_undefined_symbols_from_command_line): New
        function.
        (Symbol_table::do_add_undefined_symbols_from_command_line): New
        function.
        (Symbol::final_value_is_known): Handle IS_UNDEFINED.
        (Symbol::output_section): Likewise.
        (Symbol::set_output_section): Likewise.
        (Symbol_table::sized_finalize_symbol): Likewise.
        (Symbol_table::sized_write_globals): Likewise.
        * resolve.cc (Symbol_table::should_override): Likewise.
        (Symbol::override_base_with_special): Likewise.

        * symtab.cc (Symbol_table::add_from_dynobj): If we see a protected
        symbol, change it to have default visibility.
        * testsuite/protected_1.cc: New file.
        * testsuite/protected_2.cc: New file.
        * testsuite/protected_3.cc: New file.
        * testsuite/protected_main_1.cc: New file.
        * testsuite/protected_main_2.cc: New file.
        * testsuite/protected_main_3.cc: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add protected_1.
        (protected_1_SOURCES, protected_1_DEPENDENCIES): Define.
        (protected_1_LDFLAGS, protected_1_LDADD): Define.
        (protected_1.so): New target.
        (protected_1_pic.o, protected_2_pic.o): New targets.
        (protected_3_pic.o): New target.
        (check_PROGRAMS): Add protected_2.
        (protected_2_SOURCES, protected_2_DEPENDENCIES): Define.
        (protected_2_LDFLAGS, protected_2_LDADD): Define.
        * testsuite/Makefile.in: Rebuild.

        * options.h (DEFINE_var): Add set_user_set_##varname__.
        (DEFINE_bool_alias): New macro.
        (class General_options): Define -Bstatic using DEFINE_bool_alias
        rather than DEFINE_special.  Add --undefined as an alias for -z
        defs.
        * options.cc (General_options::parse_Bstatic): Remove.

        * options.h (class General_options): Add --fatal-warnings.
        * main.cc (main): Implement --fatal-warnings.
        * errors.h (Errors::warning_count): New function.

        * options.h (class General_options): Add -Bsymbolic-functions.
        * symtab.h (Symbol::is_preemptible): Check for
        -Bsymbolic-functions.

2008-05-05  Ian Lance Taylor  <iant@google.com>

        * options.h (DEFINE_bool): For DASH_Z, create the negative option
        as noVARNAME rather than no-VARNAME.
        (class General_options): Add option -z combreloc.
        * output.h (class Output_reloc) [SHT_REL]: Declare compare and
        get_address.
        (Output_reloc::sort_before) [SHT_REL]: New function.
        (Output_reloc::sort_before) [SHT_RELA]: New function.
        (class Output_data_reloc_base): Add sort_relocs_ field.  Define
        Sort_relocs_comparison.
        (Output_data_reloc_base::Output_data_reloc_base): Add sort_relocs
        parameter.  Change all callers.
        (Output_data_reloc::Output_data_reloc) [both versions]: Add
        sort_relocs parameter.  Change all callers.
        * output.cc (Output_reloc::get_address): New function, broken out
        of write_rel.
        (Output_reloc::write_rel): Call it.
        (Output_reloc::compare): New function.
        (Output_data_reloc_base::do_write): Optionally sort relocs.

        * configure.ac: If targ_extra_obj is set, link it in.
        * configure.tgt: Initialize all variables.
        (x86_64*): Set targ_extra_obj and targ_extra_size.
        * configure: Rebuild.

        * object.cc (Sized_relobj::include_section_group): Adjust section
        indexes read from group data.  Build vector to pass to
        layout_group.
        * layout.cc (Layout::layout_group): Add flags and shndxes
        parameters.  Remove contents parameter.  Change caller.  Update
        explicit instantiations.
        * layout.h (class Layout): Update layout_group declaration.
        * output.cc (Output_data_group::Output_data_group): Add flags and
        input_shndxes parameters.  Remove contents parameter.  Change
        caller.
        (Output_data_group::do_write): Change input_sections_ to
        input_shndxes_.
        * output.h (class Output_data_group): Update constructor
        declaration.  Rename input_sections_ to input_shndxes_.
        * testsuite/many_sections_test.cc: Add template.

2008-04-30  Cary Coutant  <ccoutant@google.com>

        * target-reloc.h (relocate_section): Fix dead-pointer bug.

        * layout.cc (Layout::include_section): Refactored check for debug
        info section.
        (Layout::add_comdat): Add new parameters.  Change type
        of signature parameter.  Add object and shndx to signatures table.
        (Layout::find_kept_object): New function.
        * layout.h: Include <cstring>.
        (Layout::is_debug_info_section): New function.
        (Layout::add_comdat): Add new parameters.
        (Layout::find_kept_object): New function.
        (Layout::Kept_section): New struct.
        (Layout::Signatures): Change type of map range.
        * object.cc (Relobj::output_section_address): New function.
        (Sized_relobj::include_section_group): Add new parameters.  Change
        calls to Layout::add_comdat.  Change to build table of kept comdat
        groups and table mapping discarded sections to kept sections.
        (Sized_relobj::include_linkonce_section): Likewise.  Add new parameter.
        (Sized_relobj::do_layout): Change calls to include_section_group and
        include_linkonce_section.
        (Sized_relobj::do_finalize_local_symbols): Do not set local symbol
        value to zero when section is discarded.
        (Sized_relobj::map_to_kept_section): New function.
        * object.h (Relobj::output_section_address): New function.
        (Relobj::Comdat_group): New type.
        (Relobj::find_comdat_group): New function.
        (Relobj::Comdat_group_table): New type.
        (Relobj::Kept_comdat_section): New type.
        (Relobj::Kept_comdat_section_table): New type.
        (Relobj::add_comdat_group): New function.
        (Relobj::set_kept_comdat_section): New function.
        (Relobj::get_kept_comdat_section): New function.
        (Relobj::comdat_groups_): New field.
        (Relobj::kept_comdat_sections_): New field.
        (Symbol_value::input_value): Update comment.
        (Sized_relobj::map_to_kept_section) New function.
        (Sized_relobj::include_linkonce_section): Add new parameter.
        * target-reloc.h (Comdat_behavior): New type.
        (get_comdat_behavior): New function.
        (relocate_section): Add code to map a discarded section to the
        corresponding kept section when applying a relocation.

2008-04-30  Craig Silverstein  <csilvers@google.com>

        * dwarf_reader.cc (next_generation_count): New static var.
        (Addr2line_cache_entry): New struct.
        (addr2line_cache): New static var.
        (Dwarf_line_info::one_addr2line): Added caching.
        (Dwarf_line_info::clear_addr2line_cache): New function.
        * dwarf_reader.h (Dwarf_line_info::one_addr2line): Add
        cache-size parameter.
        (Dwarf_line_info::one_addr2line_cache): New function.
        * symtab.cc (Symbol_table::detect_odr_violations): Pass
        new cache-size argument to one_addr2line(), and clear cache.

2008-04-28  Cary Coutant  <ccoutant@google.com>

        * i386.cc (Relocate::relocate): Fix typos for R_386_PC16 and
        R_386_PC8 relocations.

2008-04-23  Ian Lance Taylor  <iant@google.com>

        * object.cc (Sized_relobj::include_section_group): Check for
        invalid section group.

        * object.cc (make_elf_object): Correct test for 64-bit ELF file
        header size.

        * readsyms.cc (Read_symbols::do_read_symbols): Use get_view rather
        than read for file header.
        * archive.cc (Archive::include_member): Likewise.

2008-04-23  Paolo Bonzini  <bonzini@gnu.org>

        * aclocal.m4: Regenerate.
        * configure: Regenerate.

2008-04-19  Ian Lance Taylor  <iant@google.com>

        * version.cc (version_string): Bump to 1.6.

        * testsuite/Makefile.am (many_sections_r_test): New target.
        (many_sections_r_test_SOURCES): Remove.
        (many_sections_r_test_DEPENDENCIES): Remove.
        (many_sections_r_test_LDFLAGS): Remove.
        (many_sections_r_test_LDADD): Remove.

        * object.cc (Sized_relobj::do_add_symbols): Always pass
        local_symbol_count_ to add_from_relobj.

        * testsuite/Makefile.am (many_sections_check.h): Only check one in
        every thousand variables.
        * testsuite/Makefile.in: Rebuild.

        * object.cc (Xindex::initialize_symtab_xindex): New function.
        (Xindex::read_symtab_xindex): New function.
        (Xindex::sym_xindex_to_shndx): New function.
        (Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if
        available.
        (Sized_relobj::do_initialize_xindex): New function.
        (Sized_relobj::do_read_symbols): Adjust section links.
        (Sized_relobj::symbol_section_and_value): Add is_ordinary
        parameter.  Change all callers.
        (Sized_relobj::include_section_group): Adjust section links and
        symbol section indexes.
        (Sized_relobj::do_layout): Adjust section links.
        (Sized_relobj::do_count_local_symbols): Adjust section links and
        symbol section indexes.
        (Sized_relobj::do_finalize_local_symbols): Distinguish between
        ordinary and special symbols.
        (Sized_relobj::write_local_symbols): Add symtab_xindex and
        dynsym_xindex parameters.  Change all callers.  Adjust section
        links.  Use SHN_XINDEX when needed.
        (Sized_relobj::get_symbol_location_info): Adjust section links.
        Don't get fooled by special symbols.
        * object.h (class Xindex): Define.
        (class Object): Add xindex_ parameter.  Declare virtual functoin
        do_initialize_xindex.
        (Object::adjust_sym_shndx): New function.
        (Object::set_xindex): New protected function.
        (class Symbol_value): Add is_ordinary_shndx_ field.
        (Symbol_value::Symbol_value): Initialize is_ordinary_shndx_.
        (Symbol_value::value): Assert ordinary section.
        (Symbol_value::initialize_input_to_output_map): Likewise.
        (Symbol_value::set_input_shndx): Add is_ordinary parameter.
        Change all callers.
        (Symbol_value::input_shndx): Add is_ordinary parameter.  Change
        all callers.
        (class Sized_relobj): Update declarations.
        (Sized_relobj::local_symbol_input_shndx): Add is_ordinary
        parameter.  Change all callers.
        (Sized_relobj::adjust_shndx): New function.
        * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_
        field.
        (Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx
        parameter.  Change all callers.  Pick up SHT_DYNSYM_SHNDX section
        for SHT_DYNSYM section if available.  Set dynsym_shndx_ field.
        (Sized_dynobj::read_dynsym_section): Adjust section links.
        (Sized_dynobj::read_dynamic): Likewise.
        (Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field.  Adjust
        section links.
        (Sized_dynobj::do_initialize_xindex): New function.
        * dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field.  Declare
        do_initialize_xindex.
        (Sized_dynobj::adjust_shndx): New function.
        * layout.cc (Layout::Layout): Initialize symtab_xindex_ and
        dynsym_xindex_ fields.
        (Layout::finalize): Add a call to set_section_indexes before
        creating the symtab sections.
        (Layout::set_section_indexes): Don't do anything if the section
        already has a section index.
        (Layout::create_symtab_sections): Add shnum parameter.  Change
        caller.  Create .symtab_shndx section if needed.
        (Layout::create_shdrs): Add shstrtab_section parameter.  Change
        caller.
        (Layout::allocated_output_section_count): New function.
        (Layout::create_dynamic_symtab): Create .dynsym_shndx section if
        needed.
        * layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_
        fields.  Update declarations.
        (Layout::symtab_xindex): New function.
        (Layout::dynsym_xindex): New function.
        (class Write_symbols_task): Add layout_ field.
        (Write_symbols_task::Write_symbols_task): Add layout parameter.
        Change caller.
        * output.cc (Output_section_headers::Output_section_headers): Add
        shstrtab_section parameter.  Change all callers.
        (Output_section_headers::do_sized_write): Store overflow values
        for section count and section string table section index in
        section header zero.
        (Output_file_header::do_sized_write): Check for overflow of
        section count and section string table section index.
        (Output_symtab_xindex::do_write): New function.
        (Output_symtab_xindex::endian_do_write): New function.
        * output.h (class Output_section_headers): Add shstrtab_section_.
        Update declarations.
        (class Output_symtab_xindex): Define.
        (Output_section::has_out_shndx): New function.
        * symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_
        field.
        (Symbol::init_base): Add st_shndx and is_ordinary parameters.
        Change all callers.
        (Sized_symbol::init): Likewise.
        (Symbol::output_section): Check for ordinary symbol.
        (Symbol_table::add_from_object): Remove orig_sym parameter.  Add
        st_shndx, is_ordinary, and orig_st_shndx parameters.  Change all
        callers.
        (Symbol_table::add_from_relobj): Add symndx_offset parameter.
        Change all callers.  Simplify handling of symbols from sections
        not included in the link.
        (Symbol_table::add_from_dynobj): Handle ordinary symbol
        distinction.
        (Weak_alias_sorter::operator()): Assert that symbols are
        ordinary.
        (Symbol_table::sized_finalize_symbol): Handle ordinary symbol
        distinction.
        (Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex
        parameters.  Change all callers.
        (Symbol_table::sized_write_globals): Likewise.  Handle ordinary
        symbol distinction.  Use SHN_XINDEX when needed.
        (Symbol_table::write_section_symbol): Add symtab_xindex
        parameter.  Change all callers.
        (Symbol_table::sized_write_section_symbol): Likewise.  Use
        SHN_XINDEX when needed.
        * symtab.h (class Symbol): Add is_ordinary_shndx_ field.  Update
        declarations.
        (Symbol::shndx): Add is_ordinary parameter.  Change all callers.
        (Symbol::is_defined): Check is_ordinary.
        (Symbol::is_undefined, Symbol::is_weak_undefined): Likewise.
        (Symbol::is_absolute, Symbol::is_common): Likewise.
        (class Sized_symbol): Update declarations.
        (class Symbol_table): Update declarations.
        * resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary
        parameters.  Change all callers.
        (Sized_symbol::override): Likewise.
        (Symbol_table::override): Likewise.
        (symbol_to_bits): Add is_ordinary parameter.  Change all callers.
        (Symbol_table::resolve): Remove orig_sym parameter.  Add st_shndx,
        is_ordinary, and orig_st_shndx parameters.  Change all callers.
        * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol
        to be in an ordinary section.
        * dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add
        object and is_ordinary parameters.  Change all callers.
        (Sized_dwarf_line_info::read_relocs): Add object parameter.
        Change all callers.  Don't add undefined or non-ordinary symbols
        to reloc_map_.
        (Sized_dwarf_line_info::read_line_mappings): Add object parameter.
        Change all callers.
        * dwarf_reader.h (class Sized_dwarf_line_info): Update
        declarations.
        * ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol.
        * reloc.cc (Sized_relobj::do_read_relocs): Adjust section links.
        (Sized_relobj::relocate_sections): Likewise.
        * target-reloc.h (scan_relocs): Adjust section symbol index.
        (scan_relocatable_relocs): Likewise.
        * i386.cc (Scan::local): Check for ordinary symbols.
        * sparc.cc (Scan::local): Likewise.
        * x86_64.cc (Scan::local): Likewise.
        * testsuite/binary_unittest.cc (Sized_binary_test): Update calls
        to symbol_section_and_value.
        * testsuite/many_sections_test.cc: New file.
        * testsuite/Makefile.am (BUILT_SOURCES): Define.
        (check_PROGRAMS): Add many_sections_test.
        (many_sections_test_SOURCES): Define.
        (many_sections_test_DEPENDENCIES): Define.
        (many_sections_test_LDFLAGS): Define.
        (BUILT_SOURCES): Add many_sections_define.h.
        (many_sections_define.h): New target.
        (BUILT_SOURCES): Add many_sections_check.h.
        (many_sections_check.h): New target.
        (check_PROGRAMS): Add many_sections_r_test.
        (many_sections_r_test_SOURCES): Define.
        (many_sections_r_test_DEPENDENCIES): Define.
        (many_sections_r_test_LDFLAGS): Define.
        (many_sections_r_test_LDADD): Define.
        (many_sections_r_test.o): New target.
        * testsuite/Makefile.in: Rebuild.

2008-04-17  Cary Coutant  <ccoutant@google.com>

        * errors.cc (Errors::info): New function.
        (gold_info): New function.
        * errors.h (Errors::info): New function.
        * gold.h (gold_info): New function.
        * object.cc (Input_objects::add_object): Print trace output.
        * options.cc (options::parse_set): New function.
        (General_options::parse_wrap): Deleted.
        (General_options::General_options): Deleted initializer.
        * options.h (options::String_set): New typedef.
        (options::parse_set): New function.
        (DEFINE_set): New macro.
        (General_options::wrap): Changed to use DEFINE_set. Changed
        callers of any_wrap_symbols and is_wrap_symbol.
        (General_options::trace, General_options::trace_symbol):
        New options.
        (General_options::any_wrap_symbols, General_options::is_wrap_symbol)
        (General_options::wrap_symbols_): Deleted.
        * symtab.cc (Symbol_table::add_from_object): Print trace output.

2008-04-17  David S. Miller  <davem@davemloft.net>

        * options.cc (General_options::parse_V): New function.
        * options.h: Add entries for -V and -Qy.

2008-04-17  Ian Lance Taylor  <iant@google.com>

        * common.cc (Symbol_table::allocate_commons): Remove options
        parameter.  Change caller.
        (Symbol_table::do_allocate_commons): Remove options parameter.
        Change caller.  Just call do_allocate_commons_list twice.
        (Symbol_table::do_allocate_commons_list): New function, broken out
        of do_allocate_commons.
        * common.h (class Allocate_commons_task): Remove options_ field.
        Update constructor.
        * symtab.cc (Symbol_table::Symbol_table): Initialize
        tls_commons_.
        (Symbol_table::add_from_object): Put TLS common symbols on
        tls_commons_ list.
        (Symbol_table::sized_finalize_symbol): Handle STT_TLS symbols
        which are IN_OUTPUT_DATA.
        * symtab.h (class Symbol_table): Add tls_commons_ field.  Update
        allocate_commons and do_allocate_commons declarations.  Declare
        do_allocate_commons_list.
        * gold.cc (queue_middle_tasks): Update creation of
        Allocate_commons_task to not pass options.
        * testsuite/Makefile.am (INCLUDES): Add -I.. .
        (TLS_TEST_C_FLAGS): New variable.
        (tls_test_c_pic.o): New target.
        (tls_test_shared.so): Link in tls_test_c_pic.o.
        (tls_test_c_pic_ie.o): New target.
        (tls_test_ie_shared.so): Link in tls_test_c_pic_ie.o.
        (tls_test_DEPENDENCIES, tls_test_LDADD): Add tls_test_c.o.
        (tls_test_c.o): New target.
        (tls_pic_test_DEPENDENCIES): Add tls_test_c_pic.o.
        (tls_pic_test_LDADD): Likewise.
        (tls_shared_gd_to_ie_test_DEPENDENCIES): Add tls_test_c_pic.o.
        (tls_shared_gd_to_ie_test_LDADD): Likewise.
        (tls_test_c_gnu2.o): New target.
        (tls_shared_gnu2_gd_to_ie_test_DEPENDENCIES): Add
        tls_test_c_gnu2.o.
        (tls_shared_gnu2_gd_to_ie_test_LDADD): Likewise.
        (tls_test_gnu2_shared.so): Link in tls_test_c_gnu2.o.
        (tls_test_shared_nonpic.so): Link in tls_test_c.o.
        * testsuite/tls_test.cc: Include "config.h".
        (t_last): Call t11_last.
        * testsuite/tls_test.h (t11, t11_last): Declare.
        * testsuite/tls_test_c.c: New file.
        * testsuite/tls_test_main.cc (thread_routine): Call t11.
        * configure.ac: Check for OpenMP support.
        * configure, config.in, Makefile.in: Rebuild.
        * testsuite/Makefile.in: Rebuild.

2008-04-16  Cary Coutant  <ccoutant@google.com>

        * i386.cc (Target_i386::define_tls_base_symbol): New function.
        (Target_i386::tls_base_symbol_defined_): New field.
        (Target_i386::Scan::local): Define _TLS_MODULE_BASE_ symbol.
        (Target_i386::Scan::global): Likewise.
        * symtab.cc (sized_finalize_symbol): Add check for TLS symbol.
        * x86_64.cc (Target_x86_64::define_tls_base_symbol): New function.
        (Target_x86_64::tls_base_symbol_defined_): New field.
        (Target_x86_64::Scan::local): Define _TLS_MODULE_BASE_ symbol.
        (Target_x86_64::Scan::global): Likewise.

2008-04-16  Cary Coutant  <ccoutant@google.com>

        * symtab.h (Symbol::is_strong_undefined): Removed unused function.
        (Symbol::needs_plt_entry): Allow weak undefined symbols.
        (Symbol::needs_dynamic_reloc): Allow weak undefined symbols when
        building shared libraries.
        * testsuite/Makefile.am (weak_undef_nonpic_test): New target.
        (weak_undef_file1_nonpic.o, weak_undef_file2_nonpic.o)
        (weak_undef_lib_nonpic.so, alt/weak_undef_lib_nonpic.so): New targets.
        * testsuite/Makefile.in: Rebuild.
        * testsuite/weak_undef.h: New file.
        * testsuite/weak_undef_file1.cc: Add extra test cases.
        * testsuite/weak_undef_file2.cc: Likewise.
        * testsuite/weak_undef_test.cc: Likewise.

2008-04-16  David S. Miller  <davem@davemloft.net>

        * sparc.cc (Target_sparc::Scan): Change from struct to class.
        Add issued_non_pic_error_ field.  Declare check_non_pic.
        (Target_sparc::Scan::check_non_pic): New function.
        (Target_sparc::Scan::local): Call check_non_pic as appropriate.
        (Target_sparc::Scan::global): Likewise.

        * configure.ac (FN_PTRS_IN_SO_WITHOUT_PIC): Add sparc64.
        * configure: Rebuild.

        * options.h (DEFINE_enable): New macro.
        (new_dtags): New enable option.
        (initfirst, interpose, loadfltr, nodefaultlib,
        nodelete, nodlopen, nodump): New -z options.
        * layout.cc (Layout:finish_dynamic_section): If new
        dtags enabled, emit DT_RUNPATH.  Also, emit a
        DT_FLAGS_1 containing any specified -z flags.

2008-04-16  Ian Lance Taylor  <iant@google.com>

        * copy-relocs.cc: New file.
        * copy-relocs.h: New file.
        * reloc.cc: Remove Copy_relocs code.
        * reloc.h: Likewise.
        * reloc-types.h (struct Reloc_types) [both versions]: Add
        get_reloc_addend_noerror.
        * output.h (class Output_data_reloc<elfcpp::SHT_REL>): Add
        variants of add_global which take an addend which must be zero.
        * i386.cc: Include "copy-relocs.h".
        (class Target_i386): Change type of copy_relocs_ to variable,
        update initializer.
        (Target_i386::copy_reloc): Rewrite to pass to Copy_relocs class.
        Change all callers.
        (Target_i386::do_finalize_sections): Change handling of
        copy_relocs_.
        * sparc.cc: Include "copy-relocs.h".
        (class Target_sparc): Change type of copy_relocs_ to variable,
        update initializer.
        (Target_sparc::copy_reloc): Rewrite to pass to Copy_relocs class.
        Change all callers.
        (Target_sparc::do_finalize_sections): Change handling of
        copy_relocs_.
        * x86_64.cc: Include "copy-relocs.h".
        (class Target_x86_64): Change type of copy_relocs_ to variable,
        update initializer.
        (Target_x86_64::copy_reloc): Rewrite to pass to Copy_relocs
        class.  Change all callers.
        (Target_x86_64::do_finalize_sections): Change handling of
        copy_relocs_.
        * Makefile.am (CCFILES): Add copy-relocs.cc.
        (HFILES): Add copy-relocs.h.

        * Makefile.in, aclocal.m4, testsuite/Makefile.in: Rebuild.

        * testsuite/script_test_4.sh: Permit leading zeroes.

2008-04-15  Ian Lance Taylor  <iant@google.com>

        * script-sections.cc (Script_sections::create_segments): Use
        header_size_adjustment even when there is enough room for the
        headers.
        * testsuite/script_test_4.sh: New file.
        * testsuite/script_test_4.t: New file.
        * testsuite/Makefile.am (check_SCRIPTS): Add script_test_4.sh.
        (check_DATA): Add script_test_4.stdout.
        (MOSTLYCLEANFILES): Likewise.
        (script_test_4): New target.
        (script_test_4.stdout): New target.
        * testsuite/Makefile.in: Rebuild.

        * sparc.cc: Add definitions for Output_data_plt_sparc class
        constants.

2008-04-14  David S. Miller  <davem@davemloft.net>

        * sparc.cc: New file.
        * Makefile.am (TARGETSOURCES): Add sparc.cc
        (ALL_TARGETOBJS): Add sparc.$(OBJEXT)
        * configure.tgt: Document targ_extra_size and
        targ_extra_big_endian.  Add entries for sparc-* and
        sparc64-*.
        * configure.ac: Handle targ_extra_size and
        targ_extra_big_endian.
        * Makefile.in: Rebuild.
        * configure: Likewise.
        * po/POTFILES.in: Likewise.
        * po/gold.pot: Likewise.

2008-04-14  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::Layout): Initialize sections_are_attached_.
        (Layout::get_output_section): Ignore SHF_WRITE and SHF_EXECINSTR
        in the name/type/flags to section mapping.  Don't call
        allocate_output_section.
        (Layout::choose_output_section): Change parameter from adjust_name
        to is_input_section.  Don't permit input sections after sections
        are attached to segments.  Don't call allocate_output_section.
        (Layout::layout_eh_frame): Call update_flags_for_input_section,
        not write_enable_output_section.
        (Layout::make_output_section): Don't push to
        unattached_section_list_ nor call attach_to_segment.  Call
        attach_section_to_segment if sections are attached.
        (Layout::attach_sections_to_segments): New function.
        (Layout::attach_section_to_segment): New function.
        (Layout::attach_allocated_section_to_segment): Rename from
        attach_to_segment.  Remove flags parameter.
        (Layout::allocate_output_section): Remove function.
        (Layout::write_enable_output_section): Remove function.
        * layout.h (class Layout): Update for above changes.  Add new
        field sections_are_attached_.
        * output.h (Output_section::update_flags_for_input_section): New
        function.
        * output.cc (Output_section::add_input_section): Call
        update_flags_for_input_section.
        * gold.cc (queue_middle_tasks): Call attach_sections_to_segments.

2008-04-11  Cary Coutant  <ccoutant@google.com>

        * i386.cc (Target_i386::got_mod_index_entry): Restore code previously
        thought unnecessary.
        * x86_64.cc (Target_x86_64::got_mod_index_entry): Likewise.

2008-04-11  Ian Lance Taylor  <iant@google.com>

        * output.h (class Output_section_data): Remove inline definition
        of set_addralign.
        * output.cc (Output_section_data::set_addralign): New function.

2008-04-11  Cary Coutant  <ccoutant@google.com>

        Add support for TLS descriptors for i386 and x86_64.
        * i386.cc (Target_i386::Relocate::tls_desc_gd_to_ie): New function.
        (Target_i386::Relocate::tls_desc_gd_to_le): New function.
        (Target_i386::Got_type): Add GOT_TYPE_TLS_NOFFSET and
        GOT_TYPE_TLS_DESC.
        (Target_i386::got_mod_index_entry): Remove unnecessary code.
        (Target_i386::Scan::local): Implement R_386_TLS_GOTDESC and
        R_386_TLS_DESC_CALL relocations.  Fix problem with initial-exec
        relocations.
        (Target_i386::Scan::global): Fix problem with GD-to-IE relaxation.
        Implement R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL relocations;
        Fix problem with initial-exec relocations.
        (Target_i386::Relocate::relocate_tls): Likewise.
        (Target_i386::Relocate::tls_gd_to_ie): Fix problem with GD-to-IE
        relaxation.
        * output.cc (Output_data_dynamic::Dynamic_entry::write): Add
        support for section-plus-offset dynamic table entries.
        * output.h (Output_data_dynamic::add_section_plus_offset): New function.
        (Output_data_dynamic::Dynamic_entry): Add support for
        section-plus-offset dynamic table entries.
        (Output_data_dynamic::Classification): Likewise.
        (Output_data_dynamic::classification_): Renamed offset_.
        * x86_64.cc (Target_x86_64::Relocate::tls_desc_gd_to_ie): New function.
        (Target_x86_64::Relocate::tls_desc_gd_to_le): New function.
        (Target_x86_64::make_plt_section): New function.
        (Target_x86_64::reserve_tlsdesc_entries): New function.
        (Output_data_plt_x86_64::Output_data_plt_x86_64): Add new parameter.
        (Output_data_plt_x86_64::reserve_tlsdesc_entry): New function.
        (Output_data_plt_x86_64::has_tlsdesc_entry): New function.
        (Output_data_plt_x86_64::get_tlsdesc_got_offset): New function.
        (Output_data_plt_x86_64::get_tlsdesc_plt_offset): New function.
        (Output_data_plt_x86_64::tlsdesc_plt_entry): New field.
        (Output_data_plt_x86_64::set_final_data_size): Move out of line;
        add extra PLT entry for TLS descriptors.
        (Output_data_plt_x86_64::got_): New field.
        (Output_data_plt_x86_64::tlsdesc_got_offset_): New field.
        (Output_data_plt_x86_64::Output_data_plt_x86_64): Initialize new
        fields.
        (Output_data_plt_x86_64::do_write): Write extra PLT entry for TLS
        descriptors.
        (Target_x86_64::make_plt_entry): Factor out make_plt_section.
        (Target_x86_64::got_mod_index_entry): Remove unnecessary code.
        (Target_x86_64::Scan::local): Implement R_386_TLS_GOTDESC and
        R_386_TLS_DESC_CALL relocations.
        (Target_x86_64::Scan::global): Likewise.
        (Target_x86_64::do_finalize_sections): Add dynamic table entries
        for TLS descriptors.
        (Relocate::relocate_tls): Fix problem with GD-to-IE relaxation.
        Implement R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL relocations.
        (Target_x86_64::Relocate::tls_gd_to_ie): Fix problem with
        GD-to-IE relaxation.
        * configure.ac: Export new conditional variables TLS_GNU2_DIALECT
        and TLS_DESCRIPTORS.
        * Makefile.in: Rebuild.
        * configure: Rebuild.
        * testsuite/Makefile.am (tls_shared_gd_to_ie_test): New target.
        (tls_test_shared2.so): New target.
        (tls_shared_gd_to_ie_test_SOURCES): New variable.
        (tls_shared_gd_to_ie_test_DEPENDENCIES): New variable.
        (tls_shared_gd_to_ie_test_LDFLAGS): New variable.
        (tls_shared_gd_to_ie_test_LDADD): New variable.
        (tls_shared_gnu2_gd_to_ie_test): New target.
        (tls_test_gnu2.o, tls_test_file2_gnu2.o, tls_test_gnu2_shared2.so):
        New targets.
        (tls_shared_gnu2_gd_to_ie_test_SOURCES): New variable.
        (ls_shared_gnu2_gd_to_ie_test_DEPENDENCIES): New variable.
        (tls_shared_gnu2_gd_to_ie_test_LDFLAGS): New variable.
        (tls_shared_gnu2_gd_to_ie_test_LDADD): New variable.
        (tls_shared_gnu2_test): New target.
        (tls_test_gnu2_shared.so): New target.
        (tls_shared_gnu2_test_SOURCES): New variable.
        (tls_shared_gnu2_test_DEPENDENCIES): New variable.
        (tls_shared_gnu2_test_LDFLAGS): New variable.
        (tls_shared_gnu2_test_LDADD): New variable.
        * testsuite/Makefile.in: Rebuild.
        * testsuite/Makefile.

2008-04-11  Ian Lance Taylor  <iant@google.com>

        * testsuite/Makefile.am (justsyms_2r.o): Add dependency on
        justsyms.t.
        * testsuite/Makefile.in: Rebuild.

        * testsuite/script_test_2a.cc (script_test_string_a): Make 8 bytes
        long.
        * testsuite/script_test_2.cc (main): Adjust test.

2008-04-11  David S. Miller  <davem@davemloft.net>
            Ian Lance Taylor  <iant@google.com>

        * options.h (General_options): Add entries for '-Y' and
        '-relax'.
        * options.cc (General_options:finalize): If -Y was used, add those
        entries to the library path instead of the default "/lib" and
        "/usr/lib".

2008-04-11  David S. Miller  <davem@davemloft.net>

        * testsuite/justsyms.t: Start at 0x100.
        * testsuite/justsyms_1.cc: Adjust justsyms_string assertion.
        * testsuite/script_test_2b.cc (script_test_string_b): Make 8 bytes
        long.
        * testsuite/script_test_2.cc: Adjust string and section length
        checks.

2008-04-09  Ian Lance Taylor  <iant@google.com>

        PR gold/5996
        * script-sections.cc (Sections_element::allocate_to_segment): Add
        orphan parameter.
        (Output_section_definition::allocate_to_segment): Likewise.
        (Orphan_output_section::allocate_to_segment): Likewise.
        (Script_sections::attach_sections_using_phdrs_clause): Don't
        propagate non-PT_LOAD segments to orphan sections.
        * testsuite/Makefile.am (script_test_3.stdout): Generate using
        readelf rather than objdump.
        * testsuite/script_test_3.sh: Adjust accordingly.  Test that
        .interp section and PT_INTERP segment are the same size.
        * testsuite/Makefile.in: Rebuild.

        * symtab.cc (Symbol_table::add_from_dynobj): Only look for weak
        aliases for symbols defined in the same object.
        * testsuite/Makefile.am (check_PROGRAMS): Add weak_alias_test.
        (weak_alias_test_SOURCES): New variable.
        (weak_alias_test_DEPENDENCIES): New variable.
        (weak_alias_test_LDFLAGS): New variable.
        (weak_alias_test_LDADD): New variable.
        (weak_alias_test_1_pic.o, weak_alias_test_1.so): New targets.
        (weak_alias_test_2_pic.o, weak_alias_test_2.so): New targets.
        (weak_alias_test_3.o): New target.
        (weak_alias_test_4_pic.o, weak_alias_test_4.so): New targets.
        * testsuite/weak_alias_test_main.cc: New file.
        * testsuite/weak_alias_test_1.cc: New file.
        * testsuite/weak_alias_test_2.cc: New file.
        * testsuite/weak_alias_test_3.cc: New file.

2008-04-08  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Add --noinhibit-exec option.
        * main.cc (main): Check --noinhibit-exec.

        * options.h (class General_options): Define --wrap as a special
        option.  Add wrap_symbols_ field.
        (General_options::any_wrap_symbols): New function.
        (General_options::is_wrap_symbol): New function.
        * options.cc (General_options::parse_wrap): New function.
        (General_options::General_options): Initialize wrap_symbols_.
        * symtab.cc (Symbol_table::wrap_symbol): New function.
        (Symbol_table::add_from_object): Handle --wrap.
        * symtab.h (class Symbol_table): Declare wrap_symbol.
        * target.h (Target::wrap_char): New function.
        (Target::Target_info): Add wrap_char field.
        * i386.cc (Target_i386::i386_info): Initialize wrap_char.
        * x86_64.cc (Target_x86_64::x86_64_info): Likewise.
        * testsuite/testfile.cc (Target_test::test_target_info):
        Likewise.

        * errors.cc (Errors::undefined_symbol): Mention symbol version if
        there is one.

        * layout.h (class Layout): Add added_eh_frame_data_ field.
        * layout.cc (Layout::Layout): Initialize new field.
        (Layout::layout_eh_frame): Don't add eh_frame_data_ to .eh_frame
        output section until we find a section we merged successfully.
        * object.cc (Sized_relobj::check_eh_frame_flags): Don't require
        that the size be non-zero.

        * merge.cc (Object_merge_map::get_output_offset): Remove inline
        qualifier.

2008-04-08  Craig Silverstein  <csilvers@google.com>

        * configure.ac: Export new conditional variable HAVE_ZLIB.
        * testsuite/Makefile.am (flagstest_o_specialfile): Condition
        on HAVE_ZLIB.
        (flagstest_o_specialfile_and_compress_debug_sections): Likewise.
        * configure, Makefile.in, testsuite/Makefile.in: Rebuild.

2008-04-07  Ian Lance Taylor  <iant@google.com>

        * version.cc (version_string): Set to "1.5".

        * x86_64.cc (Target_x86_64::Scan): Change from struct to class.
        Add issued_non_pic_error_ field.  Declare check_non_pic.
        (Target_x86_64::Scan::check_non_pic): New function.
        (Target_x86_64::Scan::local): Call check_non_pic as appropriate.
        (Target_x86_64::Scan::global): Likewise.

        * output.cc (Output_reloc<SHT_REL>::local_section_offset): Add
        addend parameter.  Change caller.  Handle merge sections.
        (Output_reloc<SHT_REL>::symbol_value): Change parameter type from
        Address to Addend.  Don't add in the result of
        local_section_offset, pass down the addend and use the returned
        value.
        * output.h (class Output_reloc<SHT_REL>): Add Addend typedef.
        Update declarations of local_section_offset and symbol_value.
        * testsuite/two_file_test_1.cc (t18): New function.
        * testsuite/two_file_test_2.cc (f18): New function.
        * testsuite/two_file_test_main.cc (main): Call t18.
        * testsuite/two_file_test.h (t18, f18): Declare.

        * configure.ac: Don't test for objdump, c++filt, or readelf.
        * testsuite/Makefile.am: Remove READELF and OBJDUMP_AND_CPPFILT
        conditionals.
        (TEST_READELF): New variable.
        (TEST_OBJDUMP, TEST_CXXFILT, TEST_STRIP): New variables.
        (check_PROGRAMS): Add two_file_strip_test.
        (two_file_strip_test): New target.
        (check_PROGRAMS): Add two_file_same_shared_strip_test.
        (two_file_same_shared_strip_test_SOURCES): New variable.
        (two_file_same_shared_strip_test_DEPENDENCIES): New variable.
        (two_file_same_shared_strip_test_LDFLAGS): New variable.
        (two_file_same_shared_strip_test_LDADD): New variable.
        (two_file_shared_strip.so): New target.
        (ver_test_2.syms, ver_test_4.syms): Use TEST_READELF.
        (ver_test_5.syms, ver_test_7.syms): Likewise.
        (ver_matching_test.stdout): Use TEST_OBJDUMP and TEST_CXXFILT.
        (strip_test_3.stdout): Use TEST_OBJDUMP.
        * configure, Makefile.in, testsuite/Makefile.in: Rebuild.

2008-04-04  Cary Coutant  <ccoutant@google.com>

        * symtab.h (Symbol::is_weak_undefined): New function.
        (Symbol::is_strong_undefined): New function.
        (Symbol::is_absolute): New function.
        (Symbol::needs_plt_entry): Exclude weak undefined symbols.
        (Symbol::needs_dynamic_reloc): Exclude weak undefined and
        absolute symbols.
        * testsuite/Makefile.am (check_PROGRAMS): Add weak_undef_test.
        (weak_undef_test): New target.
        * testsuite/Makefile.in: Rebuild.
        * testsuite/weak_undef_file1.cc: New file.
        * testsuite/weak_undef_file2.cc: New file.
        * testsuite/weak_undef_test.cc: New file.

2008-04-03  Craig Silverstein  <csilvers@google.com>

        * compressed_output.h (class Output_compressed_section): Use
        unsigned buffer.
        * compressed_output.cc (zlib_compress): Use unsigned buffers,
        add zlib header.
        (zlib_compressed_suffix): Removed.
        (Output_compressed_section::set_final_data_size): Use unsigned
        buffers.
        * testsuite/Makefile.am (flagstest_compress_debug_sections):
        Fix linker invocation.
        (flagstest_o_specialfile_and_compress_debug_sections):
        Likewise.
        * testsuite/Makefile.in: Regenerated.

2008-04-02  David S. Miller  <davem@davemloft.net>

        *  dwarf_reader.cc (Sized_dwarf_line_info::read_header_prolog,
        Sized_dwarf_line_info::process_one_opcode): Use Swap_unaligned.

2008-04-02  Craig Silverstein  <csilvers@google.com>

        * TODO: New file.

2008-04-02  Ian Lance Taylor  <iant@google.com>

        * fileread.cc (File_read::find_view): Add byteshift and vshifted
        parameters.  Update for new key type to views_.  Change all
        callers.
        (File_read::read): Adjust for byteshift in returned view.
        (File_read::add_view): New function, broken out of
        find_and_make_view.
        (File_read::make_view): New function, broken out of
        find_and_make_view.
        (File_read::find_or_make_view): Add offset and aligned
        parameters.  Rewrite accordingly.  Change all callers.
        (File_read::get_view): Add offset and aligned parameters.  Adjust
        for byteshift in return value.
        (File_read::get_lasting_view): Likewise.
        * fileread.h (class File_read): Update declarations.
        (class File_read::View): Add byteshift_ field.  Add byteshift to
        constructor.  Add byteshift method.
        * archive.h (Archive::clear_uncached_views): New function.
        (Archive::get_view): Add aligned parameter.  Change all callers.
        * object.h (Object::get_view): Add aligned parameter.  Change all
        callers.
        (Object::get_lasting_view): Likewise.

        * fileread.cc (File_read::release): Don't call clear_views if
        there are multiple objects.
        * fileread.h (File_read::clear_uncached_views): New function.
        * archive.cc (Add_archive_symbols::run): Call clear_uncached_views
        on the archive.

2008-03-31  Cary Coutant  <ccoutant@google.com>

        Add thin archive support.
        * archive.cc (Archive::armagt): New const.
        (Archive::setup): Remove task parameter and calls to unlock.
        (Archive::unlock_nested_archives): New function.
        (Archive::read_header): Add nested_off parameter. Change
        all callers.
        (Archive::interpret_header): Likewise.
        (Archive::include_all_members): Change to handle thin
        archives.
        (Archive::include_member): Likewise.
        * archive.h (Archive::Archive): Add new parameters and
        initializers.
        (Archive::armagt): New const.
        (Archive::setup): Remove task parameter.
        (Archive::unlock_nested_archives): New function.
        (Archive::read_header): Add nested_off parameter.
        (Archive::interpret_header): Likewise.
        (Archive::Nested_archive_table): New typedef.
        (Archive::is_thin_archive_): New field.
        (Archive::nested_archives_): New field.
        (Archive::options_): New field.
        (Archive::dirpath_): New field.
        (Archive::task_): New field.
        * readsyms.cc (Read_symbols::do_read_symbols): Add check
        for thin archives.  Pass additional parameters to
        Archive::Archive.  Unlock the archive file after calling
        Archive::setup.

2008-03-29  Ian Lance Taylor  <iant@google.com>

        * symtab.cc (Symbol_table::do_define_as_constant): Don't force a
        version symbol to be local.
        * testsuite/ver_test_4.sh: New file.
        * testsuite/Makefile.am (check_SCRIPTS): Add ver_test_4.sh.
        (check_DATA): Add ver_test_4.syms.
        (ver_test_4.syms): New target.
        * testsuite/Makefile.in: Rebuild.

        * output.cc
        (Output_section::Input_section_sort_entry::has_priority): New
        function.
        (Output_section::Input_section_sort_entry::match_file_name): New
        function.
        (Output_section::Input_section_sort_entry::match_section_name):
        Remove.
        (Output_section::Input_section_sort_entry::match_section_name_prefix):
        Remove.
        (Output_section::Input_section_sort_entry::match_section_file):
        Remove.
        (Output_section::Input_section_sort_compare::operator()): Rewrite
        using new Input_section_sort_entry functions.  Sort crtbegin and
        crtend first.  Sort sections with no priority before sections with
        a priority.
        * testsuite/initpri1.c (d3): Check j != 4.
        (cd5): New constructor/destructor function.
        (main): Check j != 2.

        * symtab.cc (Symbol_table::add_from_object): If we don't use the
        new symbol when resolving, don't call set_is_default.
        * testsuite/ver_test_7.cc: New file.
        * testsuite/ver_test_7.sh: New file.
        * testsuite/Makefile.am (ver_test_7.so): New target.
        (ver_test_7.o): New target.
        (check_SCRIPTS): Add ver_test_7.sh.
        (check_DATA): Add ver_test_7.syms.
        (ver_test_7.syms): New target.

2008-03-28  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::layout): If we see an input section with a
        name that needs sorting, set the must_sort flag for the output
        section.
        (Layout::make_output_section): If the name of the output section
        indicates that it might require sorting, set the may_sort flag.
        * output.h (Output_section::may_sort_attached_input_sections): New
        function.
        (Output_section::set_may_sort_attached_input_sections): New
        function.
        (Output_section::must_sort_attached_input_sections): New
        function.
        (Output_section::set_must_sort_attached_input_sections): New
        function.
        (class Output_section): Declare Input_section_sort_entry.  Define
        Input_section_sort_compare.  Declare
        sort_attached_input_sections.  Add new fields:
        may_sort_attached_input_sections_,
        must_sort_attached_input_sections_,
        attached_input_sections_are_sorted_.
        * output.cc (Output_section::Output_section): Initialize new
        fields.
        (Output_section::add_input_section): Add an entry to
        input_sections_ if may_sort or must_sort are true.
        (Output_section::set_final_data_size): Call
        sort_attached_input_sections if necessary.
        (Output_section::Input_section_sort_entry): Define new class.
        (Output_section::Input_section_sort_compare::operator()): New
        function.
        (Output_section::sort_attached_input_sections): New function.
        * configure.ac: Check whether the compiler supports constructor
        priorities.  Define a CONSTRUCTOR_PRIORITY automake conditional.
        * testsuite/initpri1.c: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add initpri1 if
        CONSTRUCTOR_PRIORITY.
        (initpri1_SOURCES, initpri1_DEPENDENCIES): New variables.
        (initpri1_LDFLAGS): New variable.
        * configure, Makefile.in, testsuite/Makefile.in: Rebuild.

2008-03-27  Ian Lance Taylor  <iant@google.com>

        * common.cc (Sort_commons::operator): Correct sorting algorithm.
        * testsuite/common_test_1.c: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add common_test_1.
        (common_test_1_SOURCES): New variable.
        (common_test_1_DEPENDENCIES): New variable.
        (common_test_1_LDFLAGS): New variable.

        * symtab.cc (Symbol_table::add_from_object): Handle saw_undefined_
        and commons_ correctly when NAME/VERSION does not override
        NAME/NULL.
        * testsuite/ver_test_6.c: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add ver_test_6
        (ver_test_6_SOURCES, ver_test_6_DEPENDENCIES): New variables.
        (ver_test_6_LDFLAGS, ver_test_6_LDADD): New variables.

2008-03-26  Ian Lance Taylor  <iant@google.com>

        * symtab.cc (Symbol_table::add_from_relobj): Don't set the version
        of an undefined symbol from a version script.
        * testsuite/Makefile.am (ver_test_5.so): New target.
        (ver_test_5.o): New target.
        (check_SCRIPTS): Add ver_test_5.sh.
        (check_DATA): Add ver_test_5.syms.
        (ver_test_5.syms): New target.
        * testsuite/ver_test_5.cc: New file.
        * testsuite/ver_test_5.script: New file.
        * testsuite/ver_test_5.sh: New file.
        * Makefile.in, testsuite/Makefile.in: Rebuild.

        PR gold/5986
        Fix problems building gold with gcc 4.3.0.
        * gold.h (TEMPLATE_ATTRIBUTE_PRINTF_4): Define.
        (gold_error_at_location, gold_warning_at_location): Use it.
        * configure.ac: Check whether we can compile and use a template
        function with a printf attribute.
        * x86_64.cc (Target_x86_64::do_code_fill): Swap out a 32-bit value
        when jumping over bytes.
        * object.cc: Instantiate Object::read_section_data.
        * debug.h: Include <cstring>
        * dwarf_reader.cc: Include <algorithm>
        * main.cc: Include <cstring>.
        * options.cc: Include <cstring>.
        * output.cc: Include <cstring>.
        * script.cc: Include <cstring>.
        * script.h: Include <string>.
        * symtab.cc: Include <cstring> and <algorithm>.
        * target-select.cc: Include <cstring>.
        * version.cc: Include <string>.
        * testsuite/testmain.cc: Include <cstdlib>.
        * configure, config.in: Rebuild.

2008-03-25  Ian Lance Taylor  <iant@google.com>

        * options.cc: Include "../bfd/bfdver.h".
        (options::help): Print bug reporting address.

        * version.cc (print_version): Adjust output for current value of
        BFD_VERSION_STRING.

        * NEWS: New file.

        * options.cc (options::help): Print list of supported targets.
        * target-select.h: Include <vector>.
        (class Target_selector): Make machine_, size_, and is_big_endian_
        fields const.  Add bfd_name_ and instantiated_target_ fields.
        (Target_selector::Target_selector): Add bfd_name parameter.
        (Target_selector::recognize): Make non-virtual, call
        do_recognize.
        (Target_selector::recognize_by_name): Make non-virtual, call
        do_recognize_by_name.
        (Target_selector::supported_names): New function.
        (Target_selector::bfd_name): New function.
        (Target_selector::do_instantiate_target): New pure virtual
        function.
        (Target_selector::do_recognize): New virtual function.
        (Target_selector::do_recognize_by_name): New virtual function.
        (Target_selector::instantiate_target): New private function.
        (supported_target_names): Declare.
        * target-select.cc (Target_selector::Target_selector): Update for
        new parameter and fields.
        (select_target_by_name): Check that the name matches before
        calling recognize_by_name.
        (supported_target_names): New function.
        * i386.cc (class Target_selector_i386): Update Target_selector
        constructor call.  Remove recognize and recognize_by_name.  Add
        do_instantiate_target.
        * x86_64.cc (class Target_selector_x86_64): Likewise.
        * testsuite/testfile.cc (class Target_selector_test): Update for
        changes to Target_selector.

        * README: Rewrite, with some notes on unsupported features.

2008-03-24  Cary Coutant  <ccoutant@google.com>

        * i386.cc (Target_i386::Got_type): New enum declaration.
        (Target_i386::Scan::local): Updated callers of Output_data_got
        member functions.
        (Target_i386::Scan::global): Likewise.
        (Target_i386::Relocate::relocate): Likewise.
        (Target_i386::Relocate::relocate_tls): Likewise.
        * object.h (Got_offset_list): New class.
        (Sized_relobj::local_has_got_offset): Added got_type parameter.
        (Sized_relobj::local_got_offset): Likewise.
        (Sized_relobj::set_local_got_offset): Likewise.
        (Sized_relobj::local_has_tls_got_offset): Removed.
        (Sized_relobj::local_tls_got_offset): Removed.
        (Sized_relobj::set_local_tls_got_offset): Removed.
        (Sized_relobj::Local_got_offsets): Changed to store a list of offsets.
        * output.cc (Output_data_got::add_global): Added got_type parameter.
        (Output_data_got::add_global_with_rel): Likewise.
        (Output_data_got::add_global_with_rela): Likewise.
        (Output_data_got::add_global_pair_with_rel): New function.
        (Output_data_got::add_global_pair_with_rela): New function.
        (Output_data_got::add_local): Added got_type parameter.
        (Output_data_got::add_local_with_rel): Likewise.
        (Output_data_got::add_local_with_rela): Likewise.
        (Output_data_got::add_local_pair_with_rel): New function.
        (Output_data_got::add_local_pair_with_rela): New function.
        (Output_data_got::add_global_tls): Removed.
        (Output_data_got::add_global_tls_with_rel): Removed.
        (Output_data_got::add_global_tls_with_rela): Removed.
        (Output_data_got::add_local_tls): Removed.
        (Output_data_got::add_local_tls_with_rel): Removed.
        (Output_data_got::add_local_tls_with_rela): Removed.
        * output.h (Output_data_got::add_global): Added got_type parameter.
        (Output_data_got::add_global_with_rel): Likewise.
        (Output_data_got::add_global_with_rela): Likewise.
        (Output_data_got::add_global_pair_with_rel): New function.
        (Output_data_got::add_global_pair_with_rela): New function.
        (Output_data_got::add_local): Added got_type parameter.
        (Output_data_got::add_local_with_rel): Likewise.
        (Output_data_got::add_local_with_rela): Likewise.
        (Output_data_got::add_local_pair_with_rel): New function.
        (Output_data_got::add_local_pair_with_rela): New function.
        (Output_data_got::add_global_tls): Removed.
        (Output_data_got::add_global_tls_with_rel): Removed.
        (Output_data_got::add_global_tls_with_rela): Removed.
        (Output_data_got::add_local_tls): Removed.
        (Output_data_got::add_local_tls_with_rel): Removed.
        (Output_data_got::add_local_tls_with_rela): Removed.
        * resolve.cc (Symbol::override_base_with_special): Removed
        reference to has_got_offset_ field.
        * symtab.cc (Symbol::init_fields): Replaced initialization
        of got_offset_ with got_offsets_.  Removed initialization
        of has_got_offset_
        * symtab.h (Symbol::has_got_offset): Aded got_type parameter.
        (Symbol::got_offset): Likewise.
        (Symbol::set_got_offset): Likewise.
        (Symbol::has_tls_got_offset): Removed.
        (Symbol::tls_got_offset): Removed.
        (Symbol::set_tls_got_offset): Removed.
        (Symbol::got_offset_): Removed.
        (Symbol::tls_mod_got_offset_): Removed.
        (Symbol::tls_pair_got_offset_): Removed.
        (Symbol::got_offsets_): New field.
        (Symbol::has_got_offset): Removed.
        (Symbol::has_tls_mod_got_offset): Removed.
        (Symbol::has_tls_pair_got_offset): Removed.
        * x86_64.cc (Target_x86_64::Got_type): New enum declaration.
        (Target_x86_64::Scan::local): Updated callers of Output_data_got
        member functions.
        (Target_x86_64::Scan::global): Likewise.
        (Target_x86_64::Relocate::relocate): Likewise.
        (Target_x86_64::Relocate::relocate_tls): Likewise.

2008-03-25  Ben Elliston  <bje@au.ibm.com>

        * yyscript.y: Fix spelling error in comment.

2008-03-24  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Define build_id option.
        * layout.h (class Layout): Declare write_build_id, create_note,
        create_build_id.  Add build_id_note_ member.
        * layout.cc: Include <cerrno>, <fcntl.h>, <unistd.h>,
        "libiberty.h", "md5.h", "sha1.h".
        (Layout::Layout): Initialize eh_frame_data_,
        eh_frame_hdr_section_, and build_id_note_.
        (Layout::finalize): Call create_build_id.
        (Layout::create_note): New function, broken out of
        Layout::create_gold_note.
        (Layout::create_gold_note): Call create_note.
        (Layout::create_build_id): New function.
        (Layout::write_build_id): New function.
        (Close_task_runner::run): Call write_build_id.

        * x86_64.cc: Correct license to GPLv3.

2008-03-23  Ian Lance Taylor  <iant@google.com>

        * options.cc: Include "demangle.h".
        (parse_optional_string): New function.
        (parse_long_option): Handle takes_optional_argument.
        (parse_short_option): Update dash_z initializer.  Handle
        takes_optional_argument.
        (General_options::General_options): Initialize do_demangle_.
        (General_options::finalize): Set do_demangle_.  Handle demangling
        style.
        * options.h (parse_optional_string): Declare.
        (struct One_option): Add optional_arg field.  Update constructor.
        Update call constructor calls.  Add takes_optional_argument
        function.
        (DEFINE_var): Add optional_arg__ parameter.  Change all callers.
        (DEFINE_optional_string): Define.
        (General_options::demangle): Change from DEFINE_bool to
        DEFINE_optional_string.
        (General_options::no_demangle): New function.
        (General_options::do_demangle): New function.
        (General_options::set_do_demangle): New function.
        (General_options::execstack_status_): Move definition to end of
        class definition.
        (General_options::static_): Likewise.
        (General_options::do_demangle_): New field.
        * object.cc (big_endian>::get_symbol_location_info): Call
        Options::do_demangle, not Options::demangle.
        * symtab.cc (demangle): Likewise.

2008-03-22  Ian Lance Taylor  <iant@google.com>

        * gold.h: Include <cstddef> and <sys/types.h>
        * options.h: Include <cstring>.

2008-03-21  Ian Lance Taylor  <iant@google.com>

        * Added source code to GNU binutils.