gcc PR lto/42757

[binutils-gdb.git] / gold / ChangeLog

2010-04-06  Cary Coutant  <ccoutant@google.com>

        gcc PR lto/42757
        * plugin.cc (Pluginobj::get_symbol_resolution_info): Check for
        prevailing definitions of common symbols.
        * testsuite/plugin_test_6.sh: New test case.
        * testsuite/plugin_common_test_1.c: New test case.
        * testsuite/plugin_common_test_2.c: New test case.
        * testsuite/Makefile.am (plugin_test_6): New test case.
        * testsuite/Makefile.in: Regenerate.

2010-04-06  Nick Clifton  <nickc@redhat.com>

        * po/vi.po: New Vietnamese translation.

2010-03-30  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::using_thumb_only): Handle v6-M

2010-03-25  Doug Kwan  <dougkwan@google.com>

        * gold/arm.cc (Arm_exidx_fixup::update_offset_map): Rearrange code
        to avoid a conversion warning on a 32-bit host.

2010-03-24  Ian Lance Taylor  <iant@google.com>

        * testsuite/script_test_3.t: Add a TLS segment.
        * testsuite/Makefile.am (check_PROGRAMS): Add
        tls_phdrs_script_test.
        (tls_phdrs_script_test_SOURCES): Define.
        (tls_phdrs_script_test_DEPENDENCIES): Define.
        (tls_phdrs_script_test_LDFLAGS): Define.
        (tls_phdrs_script_test_LDADD): Define.
        * testsuite/Makefile.in: Rebuild.

2010-03-23  Cary Coutant  <ccoutant@google.com>

        * fileread.cc (find_or_make_view): Fix comment.

2010-03-23  Ian Lance Taylor  <iant@google.com>

        * script-sections.cc (class Orphan_section_placement): Define
        PLACE_TLS and PLACE_TLS_BSS.
        (Orphan_section_placement::Orphan_section_placement): Initialize
        new places.
        (Orphan_section_placement::find_place): Handle SHF_TLS sections.
        * testsuite/Makefile.am (check_PROGRAMS): Add tls_script_test.
        (tls_script_test_SOURCES): Define.
        (tls_script_test_DEPENDENCIES): Define.
        (tls_script_test_LDFLAGS): Define.
        (tls_script_test_LDADD): Define.
        * testsuite/Makefile.in: Rebuild.

2010-03-22  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relocate_functions::abs8,
        Arm_relocate_functions::abs16): Use correct check for overflow
        specified in the ARM ELF specs.
        (Arm_relocate_functions): thumb_branch_common.  Handle bit 1 of branch
        target of a BLX instruction specially.
        (Reloc_stub::stub_type_for_reloc): Ditto.
        (Relocate::relocate): Use symbolic names instead of numeric relocation
        codes to report error.
        (Target_arm::do_relox): Reduce default stub-group size for Cortex-A8
        workaround.
        * testsuite/Makefile.am (check_DATA): add thumb_blx_in_range.stdout,
        thumb_blx_out_of_range.stdout, thumb2_blx_in_range.stdout and
        thumb2_blx_out_of_range.stdout
        (thumb_bl_out_of_range, thumb_bl_out_of_range.o,
        thumb2_bl_out_of_range, thumb2_bl_out_of_range.o): Fix dependenices.
        (thumb_blx_in_range.stdout, thumb_blx_in_range, thumb_blx_in_range.o,
        thumb_blx_out_of_range.stdout, thumb_blx_out_of_range,
        thumb_blx_out_of_range.o, thumb2_blx_in_range.stdout,
        thumb2_blx_in_range, thumb2_blx_in_range.o,
        thumb2_blx_out_of_range.stdout, thumb2_blx_out_of_range,
        thumb2_blx_out_of_range.o): New rules.
        (MOSTLYCLEANFILES): Add thumb_blx_in_range, thumb_blx_out_of_range,
        thumb2_blx_in_range and thumb2_blx_out_of_range.
        * testsuite/Makefile.in: Regenerate.
        * arm_branch_in_range.sh: Add tests for THUMB BLX.
        * testsuite/thumb_blx_in_range.s: New file.
        * testsuite/thumb_blx_out_of_range.s: New file.

2010-03-22  Rafael Espindola  <espindola@google.com>

        * archive.cc (Should_include): Move to archive.h.
        (should_include_member): Make it a member of Archive.
        (Lib_group): New.
        (Add_lib_group_symbols): New.
        * archive.h: Include options.h.
        (Archive_member): Moved from Archive.
        (Should_include): Moved from archive.cc.
        (Lib_group): New.
        (Add_lib_group_symbols): New.
        * dynobj.cc (do_should_include_member): New.
        * dynobj.h (do_should_include_member): New.
        * gold.cc (queue_initial_tasks): Update call to queue.
        * main.cc (main): Print lib group stats.
        * object.cc (do_should_include_member): New.
        * object.h: Include archive.h.
        (Object::should_include_member): New.
        (Object::do_should_include_member): New.
        (Sized_relobj::do_should_include_member): New.
        * options.cc (General_options::parse_start_lib): New.
        (General_options::parse_end_lib): New.
        (Input_arguments::add_file): Handle lib groups.
        (Input_arguments::start_group): Check we are not in a lib.
        (Input_arguments::start_lib): New.
        (Input_arguments::end_lib): New.
        * options.h (General_options): Add start_lib and end_lib.
        (Input_argument::lib_): New.
        (Input_argument::lib): New.
        (Input_argument::is_lib): New.
        (Input_file_lib): New.
        (Input_arguments::in_lib_): New.
        (Input_arguments::in_lib): New.
        (Input_arguments::start_lib): New.
        (Input_arguments::end_lib_): New.
        * plugin.cc (Pluginobj::get_symbol_resolution_info): Mark symbols
        in unused members as preempted.
        (Sized_pluginobj::do_should_include_member): New.
        * plugin.h (Sized_pluginobj::do_should_include_member): New.
        * readsyms.cc (Read_symbols::locks): If we are just reading a member,
        return the blocker.
        (Read_symbols::do_whole_lib_group): New.
        (Read_symbols::do_lib_group): New.
        (Read_symbols::do_read_symbols): Handle lib groups.
        (Read_symbols::get_name): Handle lib groups.
        * readsyms.h (Read_symbols): Add an archive member pointer.
        (Read_symbols::do_whole_lib_group): New.
        (Read_symbols::do_lib_group): New.
        (Read_symbols::member_): New.
        * script.cc (read_input_script): Update call to queue_soon.

2010-03-19  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Stub_table::Stub_table): Initialize new data members
        Stub_table::reloc_stubs_size_ and Stub_table::reloc_stubs_addralign_.
        (Stub_table::add_reloc_stub): Assign stub offset and update
        Stub_table::reloc_stubs_size_ and Stub_table::reloc_stubs_addralign_.
        (Stub_table::reloc_stubs_size_, Stub_table::reloc_stubs_addralign_):
        New data members.
        (Stub_table::update_data_size_and_addralign): Use
        Stub_table::reloc_stubs_size_ and Stub_table::reloc_stubs_addralign_
        instead of going over all reloc stubs.
        (Stub_table::finalize_stubs): Do not assign reloc stub offsets.
        * stringpool.cc (Stringpool_template::Stringpool_template): Initialize
        Stringpool_template::offset_ to size of Stringpool_char.
        (Stringpool_template::new_key_offset): Remove code to initialize
        Stringpool_template::offset_.
        * stringpool.h (Stringpool_template::set_no_zero_null): Set
        Stringpool_template::offset_ to zero.

2010-03-15  Doug Kwan  <dougkwan@google.com>

        * stringpool.cc (Stringpool_template::Stringpool_template): Initialize
        offset_.
        (Stringpool_template::new_key_offset): New method.
        (Stringpool_template::add_string): Assign offsets when adding new
        strings.
        (Stringpool_template::set_string_offsets): Do not set string offsets
        when not optimizing.
        * stringpool.h (Chunked_vector::Chunked_vector): Initialize data
        member size_.
        (Chunked_vector::clear): Clear size_.
        (Chunked_vector::reserve): Call reserve method of all Element_vectors.
        (Chunked_vector::size): Return size_.
        (Chunked_vector::push_back): Use size_ to find insert position.
        (Chunked_vector::size_): New data member. 
        (Stringpool_template::set_no_zero_null): Assert string set is empty.
        (Stringpool_template::new_key_offset): New method declaration.
        (Stringpool_template::offset_): New data member.

2010-03-15   Rafael Espindola  <espindola@google.com>

        * readsyms.cc (Read_symbols::do_read_symbols): Update calls to
        Add_symbols' constructor.
        * readsyms.h (Add_symbols): Remove the input_group member.

2010-03-10  Ian Lance Taylor  <iant@google.com>

        * reloc.cc (Sized_relobj::split_stack_adjust_reltype): Call the
        target to ask whether a reference to a symbol requires a stack
        split.
        * target.h (Target::is_call_to_non_split): New function.
        (Target::do_is_call_to_non_split): Declare virtual function.
        * target.cc: Include "symtab.h".
        (Target::do_is_call_to_non_split): New function.
        * i386.cc (Target_i386::do_is_call_to_non_split): New function.

2010-03-10  Cary Coutant  <ccoutant@google.com>

        * fileread.cc (File_read::~File_read): Don't delete whole_file_view_.
        (File_read::open[1]): Remove initial mapping of whole_file_view_.
        (File_read::open[2]): Add whole_file_view_ to list of views.
        (File_read::make_view): Remove test of whole_file_view_.
        (File_read::find_or_make_view): Create whole_file_view_ if
        necessary.
        (File_read::clear_views): Replace bool parameter with enum;
        adjust all callers.  Don't delete views with permanent data;
        do delete cached views and views from archives if
        --no-keep-files-mapped is set.  Set whole_file_view_ to NULL
        if clearing the corresponding view.
        * fileread.h (File_read::Clear_views_mode): New enum.
        (File_read::View::is_permanent_view): New method.
        (File_read::clear_views): Replace bool parameter
        with enum; adjust all callers.
        * options.h (General_options): Change keep_files_mapped option;
        add map_whole_files.
        * readsyms.cc (Add_symbols::run): Delete sd_ object before
        releasing the file.
        * reloc.cc (Scan_relocs::run): Delete rd_ object before releasing
        the file.

2010-03-10  David S. Miller  <davem@davemloft.net>

        * sparc.cc (Target_sparc::Scan::local): Accept R_SPARC_WPLT30.

2010-03-09  Sriraman Tallam  <tmsriram@google.com>

        * icf.cc (get_section_contents): Add '@' marker after processing the
        merge reloc.

2010-03-08  Doug Kwan  <dougkwan@google.com>

        * gold/arm.cc (Arm_exidx_fixup::update_offset_map): Fix build breakage
        due to a conversion warning.
        (Arm_relobj::update_output_local_symbol_count): Check for local
        symbol with unset output index.

2010-03-05  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Add --spare-dynamic-tags.
        * output.cc (Output_data_dynamic::set_final_data_size): Implement
        --spare-dynamic-tags.

2010-03-05  Ian Lance Taylor  <iant@google.com>

        * incremental.cc: Include "libiberty.h".

2010-03-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * dynobj.h (Verdef::Verdef): Add is_info arg, is_info member
        function, is_info_ member.
        * dynobj.cc (Verdef::write): Set VER_FLG_INFO if this->is_info_.
        (Versions::Versions): Update caller.
        (Versions::define_base_version): Likewise.
        (Versions::add_def): Likewise.

2010-03-03  Sriraman Tallam  <tmsriram@google.com>

        * i386.cc (Target_i386::can_check_for_function_pointers): New function.
        (Scan::possible_function_pointer_reloc): New function.
        (Scan::local_reloc_may_be_function_pointer): Change to call
        possible_function_pointer_reloc.
        (Scan::global_reloc_may_be_function_pointer): Ditto.
        * icf.h (Icf::check_section_for_function_pointers): Change to reject
        relocations in ".data.rel.ro._ZTV" section.
        * testsuite/icf_safe_so_test.sh: Change to pass i386.
        * testsuite/icf_safe_so_test.cc: Ditto.
        * testsuite/icf_safe_test.cc: Ditto.
        * testsuite/icf_safe_test.sh: Ditto.

2010-03-03  Viktor Kutuzov  <vkutuzov@accesssoftek.com>
            Ian Lance Taylor  <iant@google.com>

        * target-reloc.h (relocate_section): Check the symbol table index
        for -1U before setting the local symbol index.
        (scan_relocatable_relocs): If copying the relocation, record that
        the local symbol is required.
        * object.h (Symbol_value::is_output_symtab_index_set): New
        function.
        (Symbol_value::may_be_discarded_from_output_symtab): New
        function.
        (Symbol_value::has_output_symtab_entry): New function.
        (Symbol_value::needs_output_symtab_entry): Remove.
        (Symbol_value::output_symtab_index): Make sure the symbol index is
        set.
        (Symbol_value::set_output_symtab_index): Make sure the symbol
        index is not set.  Make sure the new index is valid.
        (Symbol_value::set_must_have_output_symtab_entry): New function.
        (Symbol_value::has_output_dynsym_entry): New function.
        (Symbol_value::set_output_dynsym_index): Make sure the new index
        is valid.
        (Sized_relobj::set_must_have_output_symtab_entry): New function.
        * object.cc (Sized_relobj::do_count_local_symbols): Only discard a
        local symbol if permitted.
        (Sized_relobj::do_finalize_local_symbols): Call
        is_output_symtab_index_set rather than needs_output_symtab_entry.
        (Sized_relobj::write_local_symbols): Call has_output_symtab_entry
        rather than needs_output_symtab_entry.  Call
        has_output_dynsym_entry rather than needs_output_dynsym_entry.
        * arm.cc (Arm_relobj::update_output_local_symbol_count): Call
        is_output_symtab_index_set rather than needs_output_symtab_entry.
        * testsuite/discard_locals_relocatable_test.c: New file.
        * testsuite/discard_locals_test.sh: Test -r.
        * testsuite/Makefile.am (check_DATA): Add
        discard_locals_relocatable_test1.syms,
        discard_local_relocatable_test2.syms.
        (MOSTLYCLEANFILES): Likewise.  Also add
        discard_locals_relocatable_test1.lout and
        discard_locals_relocatable_test2.out.
        (discard_locals_relocatable_test1.syms): New target.
        (discard_locals_relocatable_test.o): New target.
        (discard_locals_relocatable_test1.out): New target.
        (discard_locals_relocatable_test2.syms): New target.
        (discard_locals_relocatable_test2.out): New target.
        (various): Add missing ../ld-new dependencies.
        * testsuite/Makefile.in: Rebuild.

2010-03-03  Nick Clifton  <nickc@redhat.com>

        * po/fi.po: New Finnish translation.

2010-03-01  Doug Kwan  <dougkwan@google.com>

        * layout.cc (Layout::Layout): Force section types of .init_array*,
        .preinit_array* and .fini_array* sections.
        * output.cc (Output_section::Input_section_sort_entry::has_priority):
        Fix check of return value of std::string::find.().
        (Output_section::Input_section_sort_compare::operator()): Remove
        comment about .init_array.
        (Output_section::Input_section_sort_init_fini_compare::operator()):
        New method.
        (Output_section::sort_attached_input_sections): Handle .init_array
        and .fini_array specially.
        * output.h (Output_section::Inut_section_sort_compare): Update
        comment.
        (Output_section::Input_section_sort_init_fini_compare): New struct.

2010-02-26  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::Relocate::reloc_is_non_pic): Treat
        R_ARM_PREL31 and R_ARM_SBREL31 as position independent.
        * testsuite/debug_msg.sh: Avoid matching source line number for
        use of global variable undef_int.

2010-02-26  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::scan_reloc_for_stub): Move code handling
        R_ARM_V4BX to Target_arm::scan_reloc_section_for_stubs.
        (Target_arm::scan_reloc_section_for_stubs): Instead of calling
        scan_reloc_for_stub, do all processing of R_ARM_V4BX here.
        * options.cc (General_options::General_options): Initialize member
        fix_v4bx_.
        * testsuite/Makefile.am (check_SCRIPTS): Add arm_fix_v4bx.sh
        (check_DATA): Add arm_fix_v4bx.stdout, arm_fix_v4bx_interworking.stdout
        and rm_no_fix_v4bx.stdout
        (arm_fix_v4bx.stdout, arm_fix_v4bx, arm_fix_v4bx.o,
        arm_fix_v4bx_interworking.stdout, arm_fix_v4bx_interworking,
        arm_no_fix_v4bx.stdout, arm_no_fix_v4bx): New make rules.
        (MOSTLYCLEANFILES): Add arm_fix_v4bx, arm_fix_v4bx_interworking
        and arm_no_fix_v4bx.
        * Makefile.in: Regenerate.
        * testsuite/arm_fix_v4bx.s: New file.
        * testsuite/arm_fix_v4bx.sh: Ditto.

2010-02-24  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::got_section): Make the .got section the first
        non RELRO section in the data segment.
        * testsuite/script_test_5.sh: Fix match patterns to avoid matching
        suffixes of section names.

2010-02-24  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::do_finalize_sections): Skip processor specific
        flags and attributes merging if an input file is a binary file.
        * fileread.cc (Input_file::open): Record format of original file.
        * fileread.h (Input_file::Format): New enum type.
        (Input_file::Input_file): Initialize data member format_.
        (Input_file::format): New method definition.
        (Input_file::format_):: New data member.

2010-02-24  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_output_data_got): New class.
        (ARM_TCB_SIZE): New constant
        (Target_arm): Use Arm_output_data_got instead of Output_data_got.
        (Arm_output_section::fix_exidx_coverage): Add a parameter for layout.
        If user uses a script with a SECTIONS clause, issue only a warning
        for a misplaced EXIDX input section.  Otherwise, issue an error.
        (Arm_relobj::do_gc_process_relocs): Exit early if we are not doing
        garbage collection.
        (Target_arm::got_mode_index_entry): Handle static linking.
        (Target_arm::Scan::local): Ditto.
        (Target_arm::Scan::global): Ditto.
        (Target_arm::Relocate::relocate_tls): Handle static linking.  Fix
        all incorrectly implemented relocations.
        (Target_arm::fix_exidx_coverage): Pass layout to 
        Arm_output_section::fix_exidx_coverage.
        * layout.cc (Layout::section_name_mapping): Remove trailing dots
        from ".ARM.exidx." and ".ARM.extab.".

2010-02-23  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (Target_arm::do_finalize_sections): Create attribute
        section if it does not already exist.
        * attributes.cc (Attributes_section_data::Attributes_section_data):
        Don't crash if size is zero.

2010-02-23  Viktor Kutuzov  <vkutuzov@accesssoftek.com>
            Ian Lance Taylor  <iant@google.com>

        * gold.cc (queue_middle_tasks): If no input files were opened,
        exit.
        * workqueue.h (Task_function::Task_function): Assert that there is
        a blocker.

2010-02-22  Doug Kwan  <dougkwan@google.com>

        * gold-threads.h (Once::~Once): Explicitly define virtual destructor.
        * icf.cc (get_section_contents): Cast snprintf arguments to long long
        types to avoid warnings due to different uint64_t implementations
        on different hosts.

2010-02-21  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relocate_functions::arm_branch_common): Fix bug in
        handling of the maximum backward branch offset.
        (Arm_relocate_functions::thumb_branch_common): Ditto.
        * testsuite/Makefile.am (check_SCRIPTS): Add arm_branch_in_range.sh.
        (check_DATA): Add arm_bl_in_range.stdout, arm_bl_out_of_range.stdout
        thumb_bl_in_range.stdout, thumb_bl_out_of_range.stdout, 
        thumb2_bl_in_range.stdout and thumb2_bl_out_of_range.stdout.
        (arm_bl_in_range.stdout, arm_bl_in_range, arm_bl_in_range.o,
        arm_bl_out_of_range.stdout, arm_bl_out_of_range,
        arm_bl_out_of_range.o, thumb_bl_in_range.stdout, thumb_bl_in_range,
        thumb_bl_in_range.o, thumb_bl_out_of_range.stdout,
        thumb_bl_out_of_range thumb_bl_out_of_range.o,
        thumb2_bl_in_range.stdout, thumb2_bl_in_range, thumb2_bl_in_range.o
        thumb2_bl_out_of_range.stdout, thumb2_bl_out_of_range,
        thumb2_bl_out_of_range.o): New rules.
        (MOSTLYCLEANFILES): Add arm_bl_in_range, arm_bl_out_of_range,
        thumb_bl_in_range, thumb_bl_out_of_range, thumb2_bl_in_range and
        thumb2_bl_out_of_range
        * testsuite/Makefile.in: Regenerate.
        * testsuite/arm_bl_in_range.s: New file.
        * testsuite/arm_bl_out_of_range.s: Ditto.
        * testsuite/arm_branch_in_range.sh: Ditto.
        * testsuite/arm_branch_range.t: Ditto.
        * testsuite/thumb2_branch_range.t: Ditto.
        * testsuite/thumb_bl_in_range.s: Ditto.
        * testsuite/thumb_bl_out_of_range.s: Ditto.
        * testsuite/thumb_branch_range.t: Ditto.

2010-02-20  Sriraman Tallam  <tmsriram@google.com>

        * gc.h (gc_process_relocs): Change vectors to point to the new list.
        Add reloc offset information.
        * icf.cc (get_section_contents): Change iterators to point to the new
        vectors. Add reloc offset information to the contents.
        * icf.h (Icf::Sections_reachable_info): New typedef.
        (Icf::Sections_reachable_list): New typedef.
        (Icf::Offset_info): New typedef.
        (Icf::Reloc_info): New struct typedef.
        (Icf::Reloc_info_list): New typedef.
        (Icf::symbol_reloc_list): Delete method.
        (Icf::addend_reloc_list): Delete method.
        (Icf::section_reloc_list): Delete method.
        (Icf::reloc_info_list): New method.
        (Icf::reloc_info_list_): New member.

2010-02-19  Doug Kwan  <dougkwan@google.com>

        * arm-reloc.def: Mark R_ARM_TLS_GD32, R_ARM_TLS_LDM32,
        R_ARM_TLS_LDO32, R_ARM_TLS_IE32 and R_ARM_TLS_LE32 are implemented.
        * arm.cc (Arm_relocation_functions): New forward declaration.
        (Target_arm::Target_arm): Initialize new data members
        got_mod_index_offset_ and tls_base_symbol_defined_.
        (Target_arm::Relocate::relocate_tls): New method.
        (Target_arm::optimize_tls_reloc, Target_arm::define_tls_base_symbol,
         Target_arm::got_mod_index_entry, Target_arm::rel_tls_desc_section):
        New methods.
        (Target_arm::Got_type): Add GOT_TYPE_TLS_NOFFSET, GOT_TYPE_OFFSET,
        GOT_TYPE_TLS_PAIR and GOT_TYPE_TLS_DESC.
        (Target_arm::got_mod_index_offset_,
        Target_arm::tls_base_symbol_defined_): New data members.
        (Target_arm::Scan::local, Target::Scan::global,
        Target_arm::Relocate::relocate): Handle 32-bit initial TLS
        relocations.

2010-02-18  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::find_linked_text_section): New method.
        (Arm_relobj::make_exidx_input_section): Pass section index of linked
        text section as a parameter becuase some broken tools may not set
        the link in section header.
        (Target_arm::has_got_section): New method.
        (Target_arm::scan_section_for_cortex_a8_stubs): Treat an input section
        without any mapping symbol as data only.  Remove warning.
        (Arm_relobj::do_read_synbols): If an EXIDX input section has no
        link in its section header, try to discover the link by inspecting the
        REL31 relocation at the beginning of the section.
        (Target_arm::Scan::check_non_pic): Report name of offending relocation
        in error message.
        (Target_arm::Scan::global): Treat any reference to the symbol
        _GLOBAL_OFFSET_TABLE_ as a GOT access.

2010-02-12  Sriraman Tallam  <tmsriram@google.com>

        * arm.cc (Scan::local_reloc_may_be_function_pointer): New function.
        (Scan::global_reloc_may_be_function_pointer): New function.
        * sparc.cc (Scan::local_reloc_may_be_function_pointer): New function.
        (Scan::global_reloc_may_be_function_pointer): New function.
        * powerpc.cc (Scan::local_reloc_may_be_function_pointer): New function.
        (Scan::global_reloc_may_be_function_pointer): New function.
        * i386.cc (Scan::local_reloc_may_be_function_pointer): New function.
        (Scan::global_reloc_may_be_function_pointer): New function.
        * x86_64.cc (Scan::local_reloc_may_be_function_pointer): New function.
        (Scan::global_reloc_may_be_function_pointer): New function.
        (Scan::possible_function_pointer_reloc): New function.
        (Target_x86_64::can_check_for_function_pointers): New function.
        * gc.h (gc_process_relocs): Scan relocation types to determine if
        function pointers were taken for targets that support it.
        * icf.cc (Icf::find_identical_sections): Include functions for
        folding in safe ICF whose pointer is not taken.
        * icf.h (Secn_fptr_taken_set): New typedef.
        (fptr_section_id_): New member.
        (section_has_function_pointers): New function.
        (set_section_has_function_pointers): New function.
        (check_section_for_function_pointers): New function.
        * options.h: Fix comment for safe ICF option.
        * target.h (can_check_for_function_pointers): New function.
        * testsuite/Makefile.am: Add icf_safe_so_test test case.
        Modify icf_safe_test for X86-64.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/icf_safe_so_test.cc: New file.
        * testsuite/icf_safe_so_test.sh: New file.
        * testsuite/icf_safe_test.cc (kept_func_3): New function.
        (main): Change to take pointer to function kept_func_3.
        * testsuite/icf_safe_test.sh (arch_specific_safe_fold): Check if safe
        folding is done correctly for X86-64.

2010-02-12  David S. Miller  <davem@davemloft.net>

        * output.h (Output_reloc<SHT_REL>::Output_reloc): Add
        is_symbolless parameter.
        (Output_reloc<SHT_REL>::is_symbolless): New.
        (Output_reloc<SHT_REL>::is_symbolless_): New.
        (Output_reloc<SHT_REL>::type_): Decrease to 29 bits.
        (Output_reloc<SHT_RELA>::Output_reloc): Add is_symbolless parameter.
        (Output_reloc<SHT_RELA>::is_symbolless): New.
        (Output_data_reloc::add_global): Handle is_symbolless.
        (Output_data_reloc::add_global_relative): Likewise.
        (Output_data_reloc::add_local): Likewise.
        (Output_data_reloc::add_local_relative): Likewise.
        (Output_data_reloc::add_symbolless_global_addend): New.
        (Output_data_reloc::add_symbolless_local_addend): New.
        * output.cc (Output_reloc<SHT_REL>::Output_reloc): Handle
        is_symbolless.
        (Output_reloc::set_needs_dynsym_index): Test ->is_symbolless_
        instead of ->is_relative_
        (Output_reloc::write): Likewise.
        (Output_reloc::get_symbol_index): Return 0 when ->is_symbolless_
        (Output_reloc::write_rel): Simplify.

        * sparc.cc (Target_sparc::Scan::local): Use
        ->add_symbolless_local_addend as needed.
        (Target_sparc::Scan::global): Use ->add_symbolless_global_addend as
        needed.  Also, emit appropriate unaligned vs. aligned dynamic reloc
        based upon relocation offset.

2010-02-11  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::Scan::local): Fix bugs in relocation handling.
        (Target_arm::Scan::global): Ditto.  Also remove a comment before the
        beginning of function.
        (Target_arm::Relocate::relocate): Remove error messages for MOVW_ABS
        and MOVT_ABS relocations.  Those are non issued in scanning.  Fix
        parameter is_32bit in calls to should_apply_static_reloc.
        * testsuite/Makefile.am (check_SCRIPTS): Add arm_abs_global.sh.
        (check_DATA): Add arm_abs_global.stdout.
        (arm_abs_lib.o, libarm_abs.so, arm_abs_global.o, arm_abs_global,
        arm_abs_global.stdout): New rules.
        (MOSTLLYCLEANFILES): Add arm_abs_global
        * Makefile.in: Regenerate.
        * testsuite/arm_abs_global.s: New file.
        * testsuite/arm_abs_global.sh: Ditto.
        * testsuite/arm_abs_lib.s: Ditto.

2010-02-11  Ian Lance Taylor  <iant@google.com>

        * gold.cc (queue_middle_gc_tasks): Use a separate blocker for each
        Read_relocs task.
        (queue_middle_tasks): Likewise, and also for Scan_relocs.  Run
        Allocate_commons_task first.
        * reloc.cc (Read_relocs::run): Pass next_blocker_ down to next
        task, rather than symtab_lock_.
        (Gc_process_relocs::~Gc_process_relocs): New function.
        (Gc_process_relocs::is_runnable): Check this_blocker_.
        (Gc_process_relocs::locks): Use next_blocker_ rather than
        blocker_.
        (Scan_relocs::~Scan_relocs): New function.
        (Scan_relocs::is_runnable): Check this_blocker_ rather than
        symtab_lock_.
        (Scan_relocs::locks): Drop symtab_lock_ and blocker_.  Add
        next_blocker_.
        * reloc.h (class Read_relocs): Drop symtab_lock_ and blocker_
        fields.  Add this_blocker_ and next_blocker_ fields.  Adjust
        constructor accordingly.
        (class Gc_process_relocs): Likewise.
        (class Scan_relocs): Likewise.
        * common.h (class Allocate_commons_task): Remove symtab_lock_
        field, and corresponding constructor parameter.
        * common.cc (Allocate_commons_tasK::is_runnable): Remove use of
        symtab_lock_.
        (Allocate_commons_task::locks): Likewise.

2010-02-11  Ian Lance Taylor  <iant@google.com>

        * gold-threads.h (class Once): Define.
        (class Initialize_lock): Rewrite as child of Once.
        * gold-threads.cc (class Once_initialize): Define.
        (once_pointer_control): New static variable.
        (once_pointer, once_arg): New static variables.
        (c_run_once): New static function.
        (Once::Once, Once::run_once, Once::internal_run): New functions.
        (class Initialize_lock_once): Remove.
        (initialize_lock_control): Remove.
        (initialize_lock_pointer): Remove.
        (initialize_lock_once): Remove.
        (Initialize_lock::Initialize_lock): Move to gold-threads.h.
        (Initialize_lock::initialize): Rewrite.
        (Initialize_lock::do_run_once): New function.
        * archive.cc (Archive::interpret_header): Only clear name if it is
        not already empty.
        * fileread.cc: Include "gold-threads.h"
        (file_counts_lock): New static variable.
        (file_counts_initialize_lock): Likewise.
        (File_read::release): Only increment counts when using --stats.
        Use a lock around the increment.
        * parameters.cc (class Set_parameters_target_once): Define.
        (set_parameters_target_once): New static variable.
        (Parameters::Parameters): Move here from parameters.h.
        (Parameters::set_target): Rewrite.
        (Parameters::set_target_once): New function.
        (Parameters::clear_target): Move here and rewrite.
        * parameters.h (class Parameters): Update declarations.  Add
        set_parameters_target_once_ field.
        (Parameters::Parameters): Move to parameters.cc.
        (Parameters::clear_target): Likewise.
        * readsyms.cc (Read_symbols::do_group): Create a Start_group
        task.
        (Start_group::~Start_group): New function.
        (Start_group::is_runnable): New function.
        (Start_group::locks, Start_group::run): New functions.
        (Finish_group::run): Change saw_undefined to size_t.
        * readsyms.h (class Start_group): Define.
        (class Finish_group): Change saw_undefined_ field to size_t.
        (Finish_group::Finish_group): Remove saw_undefined and
        this_blocker parameters.  Change all callers.
        (Finish_group::set_saw_undefined): New function.
        (Finish_group::set_blocker): New function.
        * symtab.h (class Symbol_table): Change saw_undefined to return
        size_t.  Change saw_undefined_ field to size_t.
        * target-select.cc (Set_target_once::do_run_once): New function.
        (Target_selector::Target_selector): Initialize set_target_once_
        field.  Don't initialize lock_ and initialize_lock_ fields.
        (Target_selector::instantiate_target): Rewrite.
        (Target_selector::set_target): New function.
        * target-select.h (class Set_target_once): Define.
        (class Target_selector): Update declarations.  Make
        Set_target_once a friend.  Remove lock_ and initialize_lock_
        fields.  Add set_target_once_ field.

2010-02-10  Ian Lance Taylor  <iant@google.com>

        * dirsearch.cc (Dirsearch::initialize): Add all blockers before
        queueing any tasks.
        * gold.cc (queue_middle_gc_tasks): Likewise.  Fix final blocker.
        (queue_middle_tasks): Add all blockers before queueing any tasks.
        (queue_final_tasks): Likewise.
        * token.h (Task_token::add_blockers): New function.
        * object.h (Input_objects::number_of_relobjs): New function.

2010-02-10  Ian Lance Taylor  <iant@google.com>

        * i386.cc (Relocate::relocate_tls): A local symbol is final if not
        shared, not if not position independent.
        * x86_64.cc (Relocate::relocate_tls): Likewise.
        * testsuite/Makefile.am (check_PROGRAMS): Add tls_pie_pic_test.
        (tls_pie_pic_test): New target.
        * testsuite/Makefile.in: Rebuild.

        * testsuite/Makefile.am (check_PROGRAMS): Add tls_pie_test.
        (tls_test_main_pie.o, tls_test_pie.o): New targets.
        (tls_test_file2_pie.o, tls_test_c_pie.o, tls_pie_test): Likewise.
        * testsuite/Makefile.in: Rebuild.

2010-02-09  David S. Miller  <davem@davemloft.net>

        * sparc.cc (Target_sparc::Scan::local): Do not emit relocs other than
        R_SPARC_RELATIVE using ->add_local_relative().
        (Target_sparc::Scan::global): Likewise for ->add_global_relative().

        * output.h (Output_data_dynamic::add_section_size): New method
        that takes two Output_data objects.
        (Output_data_dynamic::Dynamic_entry): Create storage for secondary
        entry param.  Handle it in initializers.
        * output.cc (Output_data_dynamic::Dynamic_entry::write): For
        DYNAMIC_SECTION_SIZE, add in second object size if non-NULL.
        * layout.h (Layout::add_target_dynamic_tags): Add dynrel_includes_plt
        arg.
        * layout.cc (Layout::add_target_dynamic_tags): If dynrel_includes_plt,
        and .rela.plt exists, set DT_REL{,A}SZ to sum of .rela.dyn and .rela.plt
        * arm.cc (Target_arm::do_finalize_sections): Update to pass false
        for dynrel_includes_plt.
        * i386.cc (Target_i386::do_finalize_sections): Likewise.
        * x86_64.cc (Target_x86_64::do_finalize_sections): Likewise.
        * sparc.cc (Target_sparc::make_plt_entry): Force .rela.dyn to be output
        before .rela.plt
        (Target_sparc::do_finalize_sections): Update to pass true for
        dynrel_includes_plt.
        * powerpc.cc (Target_powerpc::make_plt_entry): Force .rela.dyn to be
        output before .rela.plt
        (Target_powerpc::do_finalize_sections): Update to pass true for
        dynrel_includes_plt when 32-bit.

2010-02-08  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::simple_input_section_output_address): New
        method.
        (Arm_relobj::section_needs_cortex_a8_stub_scanning,
        Arm_relobj::scan_section_for_cortex_a8_stubs,
        Arm_relobj::do_relocation_section): Instead of calling
        Output_section::output_address, use faster
        Arm_relobj::simple_input_section_output_address.

2010-02-08  David S. Miller  <davem@davemloft.net>

        * sparc.cc (Target_sparc::Relocate::relocate): If relocation offset is
        unaligned for R_SPARC_16, R_SPARC_32, or R_SPARC_64, use the unaligned
        relocation helper function.

        * sparc.cc (Target_sparc::Scan::local): Handle R_SPARC_GOTDATA_OP*
        just like R_SPARC_GOT{10,13,22}.
        (Target_sparc::Scan::local): Likewise.
        (Target_sparc::Relocate:relocate): Likewise.

2010-02-06  Ian Lance Taylor  <iant@google.com>

        * configure.ac: Rewrite targetobjs duplicate removal code to use
        only shell constructs.
        * configure: Rebuild.

2010-02-05  Doug Kwan  <dougkwan@google.com>

        PR 11247
        * arm.cc (Arm_relobj::section_is_scannable): New method.
        (Arm_relobj::section_needs_reloc_stub_scanning): Use it.
        (Arm_relobj::section_needs_cortex_a8_stub_scanning): Same.

2010-02-04  Doug Kwan  <dougkwan@google.com>

        PR 11247
        * arm-reloc-property.cc (cstdio): Include.
        * configure.ac (targetobjs): Remove duplicates.
        * configure: Regenerate.
        * resolve.cc (Symbol_table::resolve): Explicit instantiate both
        big and little endian version for a given address size.

2010-02-03  Doug Kwan  <dougkwan@google.com>

        * arm-reloc-property.cc
        (Arm_reloc_property_table::reloc_name_in_error_message): New method
        definition.
        * arm-reloc-property.h
        (Arm_reloc_property_table::get_implemented_static_reloc_property):
        New method definition.
        (Arm_reloc_property_table::reloc_name_in_error_message): New method
        declaration.
        * arm-reloc.def (THM_MOVT_ABS, THM_MOVT_PREL, THM_MOVT_BREL): Change
        overflow to N.
        (GOT_PREL): Change implemented to Y.
        * arm.cc (Target_arm::reloc_uses_thumb_bit): Remove method.
        (Target_arm::Relocate::reloc_needs_sym_origin): Remove method.
        (Arm_relocate_functions::movw_abs_nc): Remove method.
        (Arm_relocate_functions::movt_abs): Ditto.
        (Arm_relocate_functions::thm_movw_abs_nc): Ditto.
        (Arm_relocate_functions::thm_movt_abs): Ditto.
        (Arm_relocate_functions::movw_rel_nc): Ditto.
        (Arm_relocate_functions::movw_rel): Ditto.
        (Arm_relocate_functions::movt_rel): Ditto.
        (Arm_relocate_functions:thm_movw_rel_nc): Ditto.
        (Arm_relocate_functions:thm_movw_rel): Ditto.
        (Arm_relocate_functions:thm_movt_rel): Ditto.
        (Arm_relocate_functions::movw, Arm_relocate_functions::movt,
        (Arm_relocate_functions::thm_movw, Arm_relocate_functions::thm_movt):
        New method definitions.
        (Arm_relocation_functions::arm_grp_alu): Add assertion for group index.
        (Arm_relocation_functions::arm_grp_ldr): Ditto.
        (Arm_relocation_functions::arm_grp_ldrs): Ditto.
        (Arm_relocation_functions::arm_grp_ldc): Ditto.
        (Target_arm::Relocate::relocate): Check for non-static or
        unimplemented relocation code and exit early.  Change calls to
        Target_arm::reloc_uses_thumb_bit and
        Target_arm::Reloc::reloc_needs_sym_origin to use relocation property
        instead.  Refactor code to handle similar relocations to increase
        code sharing.  Remove check for unsupported relocation code in switch
        statement.
        (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): Use
        relocation property table to find out size.  Change error message to
        print out the name of a relocation code instead of the numeric value.
        (Target_arm::scan_reloc_for_stub): Use relocation property table
        instead of calling Target_arm::reloc_uses_thumb_bit().

2010-02-02  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::relocate_section): Do view adjustment for all
        types of relaxed input section.

2010-02-02  Doug Kwan  <dougkwan@google.com>

        * Makefile.am (HFILES): Add arm-reloc-property.h.
        (DEFFILES): New.
        (TARGETSOURCES): Add arm-reloc-property.cc
        (ALL_TARGETOBJS): Add arm-reloc-property.$(OBJEXT)
        (libgold_a_SOURCES): $(DEFFILES)
        * Makefile.in: Regenerate.
        * arm-reloc-property.cc: New file.
        * arm-reloc-property.h: New file.
        * arm-reloc.def: New file.
        * arm.cc: Update comments.
        (arm-reloc-property.h): New included header.
        (arm_reloc_property_table): New global variable.
        (Target_arm::do_select_as_default_target): New method definition.
        * configure.tgt (armeb*-*-*,armbe*-*-*,arm*-*-*): Add
        arm-reloc-property to targ_extra_obj.
        * parameters.cc (set_parameters_target): Call
        Target::select_as_default_target().
        * target.h (Target::select_as_default_target): New method definition.
        (Target::do_select_as_default_target): Same.

2010-02-01  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_exidx_fixup::Arm_exidx_fixup): Initialize
        first_output_text_section_.
        (Arm_exidx_fixup::first_output_text_section): New method definition.
        (Arm_exidx_fixup::first_output_text_section_): New data member.
        (Arm_exidx_fixup::process_exidx_section): Record the first text
        output section seen.
        (Arm_output_section::fix_exidx_coverage): Set correct linked section
        and entsize in output section header.

2010-01-29  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * gold/arm.cc: Added support for the ARM relocations: R_ARM_THM_PC8,
        R_ARM_THM_PC12, R_ARM_THM_ALU_PREL_11_0.
        (Arm_relocate_functions::thm_alu11): New Method.
        (Arm_relocate_functions::thm_pc8): New Method.
        (Arm_relocate_functions::thm_pc12): New Method.
        (Target_arm::Scan::local): Handle the relocations.
        (Target_arm::Scan::global): Likewise.
        (Target_arm::Relocate::relocate): Likewise.
        (Target_arm:Relocatable_size_for_reloc::get_size_for_reloc): Likewise.

2010-01-29  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::Scan::global): General PLTs for the same set
        of relocation types as ld.

2010-01-29  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relocate_functions::arm_branch_common) Change visibility
        to public.
        (Arm_relocate_functions::thumb_branch_common): Ditto.
        (Arm_relocate_functions::thm_call, Arm_relocate_functions::thm_jump24,
        Arm_relocate_functions::thm_xpc22, Arm_relocate_functions::plt32,
        Arm_relocate_functions::xpc25, Arm_relocate_functions::call,
        Arm_relocate_functions::jump24): Remove.
        (Target_arm::Relocate::relocate): Adjust code to call
        Arm_relocation_functions::arm_branch_common and
        Arm_relocation_functions::thumb_branch_common instead of their removed
        wrappers.  Merge switch-cases together to reduce source code size.  

2010-01-29  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::Arm_relobj): Initialize new data member
        output_local_symbol_count_needs_update_.
        (Arm_relobj::output_local_symbol_count_needs_update,
         Arm_relobj::set_output_local_symbol_count_needs_update,
         Arm_relobj::update_output_local_symbol_count): New methods.
        (Arm_relobj::output_local_symbol_count_needs_update_): New data
        member.
        (Arm_exidx_cantunwind::do_fixed_endian_write): Write address
        of pointed function as in a R_ARM_PREL31 relocation.
        (Arm_output_section<big_endian>::fix_exidx_coverage): Mark objects
        for output local symbol count updating.
        (Target_arm::do_relax): Update output local symbol counts in objects
        if necessary.
        * object.h (Sized_relobj::set_output_local_symbol_count): New method.

2010-01-29  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc: Added support for the ARM relocations:
        R_ARM_MOVW_BREL_NC, R_ARM_MOVT_BREL, R_ARM_MOVW_BREL,
        R_ARM_THM_MOVW_BREL_NC, R_ARM_THM_MOVT_BREL, R_ARM_THM_MOVW_BREL.
        (Arm_relocate_functions::movw_rel_nc): Renamed (was
        movw_prel_nc).
        (Arm_relocate_functions::movw_rel): New method.
        (Arm_relocate_functions::movt_rel): Renamed (was movt_prel).
        (Arm_relocate_functions::thm_movw_rel_nc): Renamed (was
        thm_movw_prel_nc).
        (Arm_relocate_functions::thm_movw_rel): New method.
        (Arm_relocate_functions::thm_movt_rel): Renamed (was
        thm_movt_prel).
        (Target_arm::Scan::local): Handle MOVW_BREL/MOVT_BREL
        relocations.
        (Target_arm::Scan::global): Likewise.
        (Target_arm::Relocate::relocate): Likewise.
        (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
        Likewise.

2010-01-27  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc: Added support for ARM group relocations.
        (Target_arm::reloc_needs_sym_origin): New method.
        (Arm_relocate_functions::calc_grp_kn): New method.
        (Arm_relocate_functions::calc_grp_residual): New method.
        (Arm_relocate_functions::calc_grp_gn): New method.
        (Arm_relocate_functions::arm_grp_alu): New Method.
        (Arm_relocate_functions::arm_grp_ldr): New Method.
        (Arm_relocate_functions::arm_grp_ldrs): New Method.
        (Arm_relocate_functions::arm_grp_ldc): New Method.
        (Target_arm::Scan::local): Handle the ARM group relocations.
        (Target_arm::Scan::global): Likewise.
        (Target_arm::Relocate::relocate): Likewise.
        (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
        Likewise.

2010-01-26  Doug Kwan  <dougkwan@google.com>

        * arm.cc (set): Include.
        (class Arm_exidx_fixup): Change type of last_input_section_ to const
        pointer type.
        (Arm_output_section::Text_section_list): New type.
        (Arm_output_section::append_text_sections_to_list): New method.
        (Arm_output_section::fix_exidx_coverage): Ditto.
        (Arm_relobj::Arm_relobj): Initialize exidx_section_map_.
        (Arm_relobj::convert_input_section_to_relaxed_section): Use
        Relobj::set_section_offset() instead of
        Sized_relobj::invalidate_section_offset().
        (Arm_relobj::section_needs_reloc_stub_scanning): Add an extra
        parameter for section headers. Ignore relocation sections for
        unallocated sections and EXIDX sections.
        (Target_arm::fix_exidx_coverage): New method.
        (Target_arm::output_section_address_less_than): New type.
        (Arm_exidx_fixup::add_exidx_cantunwind_as_needed): Use index of the
        linked text section instead of the EXIDX section.
        (Arm_output_section::create_stub_group): Add an assertion to check
        that this is not an EXIDX output section.
        (Arm_output_section::append_text_sections_to_list): New method.
        (Arm_output_section::fix_exidx_coverage): Ditto.
        (Arm_relobj::scan_sections_for_stubs): Adjust call to
        Arm_relobj::section_needs_reloc_stub_scanning.
        (Target_arm::do_relax): Fix EXIDX output section coverage in the
        first pass.
        (Target_arm::fix_exidx_coverage): New method.
        * object.h (Relobj::set_output_section): New method.
        (Sized_relobj::invalidate_section_offset): Remove method.
        (Sized_relobj::do_invalidate_section_offset): Remove method.
        (Sized_relobj::do_set_section_offset): Handle offset value -1.

2010-01-25  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_exidx_merged_section::do_output_offset):
        Fix warning due to signed and unsigned comparison on a 32-bit host.

2010-01-22  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::do_relax): Record an output section for section
        offset adjustment it contains any stub table that has changed.
        * layout.cc (Layout::clean_up_after_relaxation): Adjust section
        offsets in an output section if necessary.
        * output.cc (Output_section::Output_section): Initialize
        section_offsets_need_adjustments_.
        (Output_section::add_input_section_for_script): Renamed to
        Output_section::add_simple_input_section.
        (Output_section::save_states): Add a comment.
        (Output_section::discard_states): New method defintion.
        (Output_section::adjust_section_offsets): Same.
        * output.h (Output_section::add_input_section_for_script): Renamed to
        Output_section::add_simple_input_section.
        (Output_section::discard_states): New method declaration.
        (Output_section::adjust_section_offsets): Same.
        (Output_section::section_offsets_need_adjustment,
        Output_section::set_section_offsets_need_adjustment): New method
        definitions.
        (Output_section::section_offsets_need_adjustment_): New data member.
        * script-sections.cc
        (Output_section_element_input::set_section_address): Adjust code for
        renaming of Output_section::add_input_section_for_script.
        (Orphan_output_section::set_section_address): Same.

2010-01-22  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * gold/arm.cc (Target_arm): Updated fix_v4bx method and usage of
        Fix_v4bx enum values .
        * gold/options.h (General_options): New option definitions.
        (General_options::fix_v4bx): New method.
        (General_options::Fix_v4bx): New enum.
        * gold/options.cc (General_options::parse_fix_v4bx): New method.
        (General_options::parse_fix_v4bx_interworking): New method.

2010-01-22  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_exidx_fixup): New class.

2010-01-21  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_exidx_cantunwind, Arm_exidx_merged_section): New
        classes.
        (Arm_exidx_section_offset_map): New type.

2010-01-21  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_exidx_input_section): New class.
        (Arm_relobj::exidx_input_section_by_link,
        Arm_relobj::exidx_input_section_by_shndx,
        Arm_relobj::make_exidx_input_section): New methods.
        (read_arm_attributes_section): Remove.
        (Arm_relobj::do_read_symbols): Look for ARM.exidx sections and record
        information about them.
        (Arm_dynobj::do_read_symbols): Move code in read_arm_attributes_section
        to here.

2010-01-20  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::Arm_input_section_map): Change key type from
        Input_section_specifier to Section_id.
        (Target_arm::new_arm_input_section: Adjust code for change of key
        type.
        (Target_arm::find_arm_input_section): Ditto.
        * gc.h (object.h): Include for Section_id nand Section_id_hash.
        (Section_id): Remove.
        (Garbage_collection::Section_id_hash): Remove.
        * icf.h (object.h): Include for Section_id nand Section_id_hash.
        (Section_id): Remove.
        (Icf::Section_id_hash): Remove.
        * object.h (Section_id, Const_section_id, Section_id_hash,
        Const_section_id_hash): New type definitions.
        * output.cc (Output_section::add_relaxed_input_section): Change to
        use Const_section_id instead of Input_section_specifier as key type.
        (Output_section::add_merge_input_section): Ditto.
        (Output_section::build_relaxation_map): Change to use Section_id
        instead of Input_section_specifier as key type.
        (Output_section::convert_input_sections_in_list_to_relaxed_sections):
        Ditto.
        (Output_section::convert_input_sections_to_relaxed_sections): Change
        to use Const_section_id instead of Input_section_specifier as key type.
        (Output_section::find_merge_section): Ditto.
        (Output_section::find_relaxed_input_section): Ditto.
        * output.h (Input_section_specifier): Remove class.
        (Output_section::Output_section_data_by_input_section_map): Change
        key type to Const_section_id.
        (Output_section::Output_relaxed_input_section_by_input_section_map):
        Ditto.
        (Output_section::Relaxation_map): Change key type to Section_id.

2010-01-20  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * gold/arm.cc: Added support for R_ARM_V4BX relocation
        (class Arm_v4bx_stub): New class.
        (DEF_STUBS): Updated definition to support v4_veneer_bx.
        (Stub_factory::make_arm_v4bx_stub): New method.
        (Stub_factory::elf32_arm_stub_v4_veneer_bx): New veneer template.
        (Stub_table::empty): Handle v4bx stubs.
        (Stub_table::add_arm_v4bx_stub): New method.
        (Stub_table::find_arm_v4bx_stub): New method.
        (Arm_relocate_functions::v4bx): New method.
        (Target_arm::fix_v4bx): New method.
        (Target_arm::Target_arm): Handle R_ARM_V4BX.
        (Stub_table::relocate_stubs): Likewise.
        (Stub_table::do_write): Likewise.
        (Stub_table::update_data_size_and_addralign): Likewise.
        (Stub_table::finalize_stubs):  Likewise.
        (Target_arm::Scan::local): Likewise.
        (Target_arm::Scan::global): Likewise.
        (Target_arm::do_finalize_sections): Likewise.
        (Target_arm::Relocate::relocate): Likewise.
        (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
        Likewise.
        (Target_arm::scan_reloc_for_stub): Likewise.
        (Target_arm::scan_reloc_section_for_stubs): Likewise.

2010-01-19  Ian Lance Taylor  <iant@google.com>

        * output.cc (Output_section_headers::do_sized_write): Write large
        segment count to sh_info field.
        (Output_file_header::do_sized_write): For large segment count,
        write PN_XNUM to e_phnum field.

2010-01-15  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (Arm_relocate_functions::thm_jump6): New function.
        (Arm_relocate_functions::thm_jump8): New function.
        (Arm_relocate_functions::thm_jump11): New function.
        (Target_arm::Scan::local): Handle R_ARM_THM_JUMP6, R_ARM_THM_JUMP8,
        R_ARM_THM_JUMP11.
        (Target_arm::Scan::global): Likewise.
        (Target_arm::Relocate::relocate): Likewise.
        (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
        Likewise.

2010-01-14  Doug Kwan  <dougkwan@google.com>

        * arm.cc (map, utility): Include headers.
        (Target_arm::apply_cortex_a8_workaround): New method.
        (Arm_relobj::do_relocate_sections): Apply any Cortex-A8 workaround.
        (Target_arm::Scan::local): Handle R_ARM_THM_JUMP24, R_ARM_THM_JUMP19.
        (Target_arm::Scan::global): R_ARM_THM_JUMP19.
        (Target_arm::do_finalize_sections): Set fix_cortex_a8_ according to
        the --[no-]fix-cortex-a8 command line options.
        (Target_arm::Relocate::relocate): Handle R_ARM_JUMP19.
        (Target_arm::relocate_stub): Use addend in instruction template.
        * options.h (DEFINE_bool): Set the user-set flag.
        (General_options): Add --[no-]-fix-cortex options.
        * output.cc (Output_section::convert_input_sections_to_relaxed_sections)
        : Update fast look-up map after conversion. 

2010-01-14  Sriraman Tallam  <tmsriram@google.com>

        * object.cc (Sized_relobj::do_layout): Change to call layout_gnu_stack
        in the first pass of do_layout.

2010-01-13  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::section_needs_reloc_stub_scanning,
        Arm_relobj::scan_sections_for_stubs): Rearrange code to avoid an
        apparent compiler problem of not folding static constant integral
        data members of elfcpp::Elf_sizes<32>.

2010-01-13  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::section_needs_reloc_stub_scanning,
        Arm_relobj::section_needs_cortex_a8_stub_scanning,
        Arm_relobj::scan_section_for_cortex_a8_erratum,
        Arm_relobj::scan_span_for_cortex_a8_erratum): New methods.
        (Arm_relobj::scan_sections_for_stubs): Move code deciding what
        sections to scan for relocation stubs into a new method
        Arm_relobj::section_needs_reloc_stub_scanning.  Handle both
        relocation and Cortex-A8 stub scanning.
        (Target_arm::do_relax): Force stubs to be after stubbed sections
        if fixing the Cortex-A8 erratum.  Remove all Cortex-A8 stubs at
        the beginning of a new relaxation pass.  Update a comment. 
        (Target_arm::scan_span_for_cortex_a8_erratum): New method definition.

2010-01-12  Ian Lance Taylor  <iant@google.com>

        * target-reloc.h (visibility_error): New inline function.
        (relocate_section): Call visibility_error.
        * testsuite/Makefile.am (check_DATA): Add protected_3.err.
        (MOSTLYCLEANFILES): Likewise.
        (protected_4_pic.o, protected_3.err): New targets.
        * testsuite/protected_4.cc: New file.

2010-01-12  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Cortex_a8_reloc): New class.
        (Target_arm::Target_arm): Initialize new data members fix_cortex_a8_
        and cortex_a8_relocs_info_.
        (Target_arm::fix_cortex_a8): New method definition.
        (Target_arm::Cortex_a8_relocs_info): New type.
        (Target_arm::fix_cortex_a8_, Target_arm::cortex_a8_relocs_info_):
        New data member declarations.
        (Target_arm::scan_reloc_for_stub): Record information about
        relocations for THUMB branches that might be exempted from the
        Cortex-A8 workaround.
        (Target_arm::do_relax): Clear all Cortex-A8 relocation information
        at the beginning of a relaxation pass.

2010-01-12  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::mapping_symbols_info_): New data member.
        (Arm_relobj::Mapping_symbol_position,
         Arm_reloj::Mapping_symbol_position_less,
         Arm_relobj::Mapping_symbols_info): New types.
        (Target_arm::is_mapping_symbol_name): New method definition.
        (Arm_relobj::do_count_local_symbols): Save information about mapping
        symbols.

2010-01-11  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relocate_functions::thumb32_branch_offset,
        Arm_relocate_functions::thumb32_branch_upper,
        Arm_relocate_functions::thumb32_branch_lower,
        Arm_relocate_functions::thumb32_cond_branch_offset,
        Arm_relocate_functions::thumb32_cond_branch_upper,
        Arm_relocate_functions::thumb32_cond_branch_lower,
        Arm_relocate_functions::thm_jump19): New methods to handle THUMB
        branch offset encoding.
        (Arm_relocate_functions::thumb_branch_common): Use new branch
        offset encoding methods to avoid code duplication.
        (Stub_template::Stub_template) Handle THUMB16_SPECIAL_TYPE.
        (Stub_addend_reader::operator()): Use new branch encoding method
        to avoid code duplication.

2010-01-11  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::do_gc_process_relocs): New method.
        (Target_arm::do_finalize_sections): Define special EXIDX section
        symbols only if referenced.
        * gc.h (Garbage_collection::add_reference): New method.
        (gc_process_relocs): Use Garbage_collection::add_reference to avoid
        code duplication.

2010-01-11  Ian Lance Taylor  <iant@google.com>

        * script.cc (Version_script_info::build_expression_list_lookup):
        Change complaing about duplicate wildcard match from error to
        warning.

        * script.cc (class Lazy_demangler): Recreate--revert part of patch
        of 2009-12-30.
        (Version_script_info::Version_script_info): Initialize globs_,
        default_version_, default_is_global_, and exact_.  Don't
        initialize globals_ or locals_.
        (Version_script_info::build_lookup_tables): Build local symbols
        first.
        (Version_script_info::unquote): New function.
        (Version_script_info::add_exact_match): New function.
        (Version_script_info::build_expression_list_lookup): Remove lookup
        parameter.  Add is_global parameter.  Change all callers.  Handle
        wildcard pattern specially.  Unquote pattern.  Call
        add_exact_match.
        (Version_script_info::get_name_to_match): New function.
        (Version_script_info::get_symbol_version): New function.
        (Version_script_info::get_symbol_version_helper): Remove.
        (Version_script_info::check_unmatched_names): Call unquote.
        * script.h (class Version_script_info): Change get_symbol_version
        to be non-inline and add is_global parameter; change all callers.
        Rewrite symbol_is_local.  Update declarations.  Define struct
        Version_tree_match, Exact, Globs.  Don't define struct Lookup.
        Remove globals_ and locals_ members.  Add exact_, globs_,
        default_version_, is_global_.
        (Version_script_info::Glob): Remove pattern, add expression and
        is_global.  Update constructor.  Change all callers.
        * dynobj.cc (Versions::finalize): Mark the version symbol as the
        default version.
        (Versions::symbol_section_contents): If a symbol is undefined, or
        defined in a dynamic object, set the version index to
        VER_NDX_LOCAL.
        * symtab.cc (Symbol_table::add_from_relobj): Don't call
        symbol_is_local.
        (Symbol_table::add_from_pluginobj): Likewise.
        * testsuite/ver_matching_test.sh: blaza1 and blaza go into V2.

2010-01-11  Doug Kwan  <dougkwan@google.com>

        * Makefile.am (incremental_dump_DEPENDENCIES): Add libintl dependency.
        (incremental_dump_LDADD): Add linking option for libintl.
        * Makefile.in: Regenerate.

2010-01-11  H.J. Lu  <hongjiu.lu@intel.com>

        PR gold/11144
        * testsuite/Makefile.am (dynamic_list.stdout): Use --dyn-syms
        instead of -Ds.
        * testsuite/Makefile.in: Regenerated.

2010-01-10  Doug Kwan  <dougkwan@google.com>

        * options.h (DEFINE_var): Use parentheses around argument varname__
        in macro body to avoid any unintended subsequent substitutions.

2010-01-10  Ian Lance Taylor  <iant@google.com>

        * resolve.cc (Symbol_table::resolve): Add symbols to list of ODR
        candidates before doing symbol resolution.

        * resolve.cc (Symbol_table::resolve): Add symbols to the list of
        ODR candidates if only one is weak.

2010-01-08  Ian Lance Taylor  <iant@google.com>

        * script.cc (Version_script_info::build_expression_list_lookup):
        Don't warn about ambiguous version, just record the ambiguity.
        (Version_script_info::get_symbol_version_helper): Give error if
        version is ambiguous.

2010-01-08  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Stub_table::Stub_table): Initalize cortex_a8_stubs_,
          prev_data_size_ and prev_addralign_.  Remove initializer for
          deleted data member has_been_changed_.
          (Stub_table::empty): Look at both reloc_stubs_ and cortex_a8_stubs_
          to determine if the table is empty.
          (Stub_table::has_been_changed, Stub_table_set_has_been_changed):
          Remove.
          (Stub_table::add_reloc_stub): Define method in class definition
          instead of just declaring it there.
          (Stub_table::add_cortex_a8_stub): New method definition.
          (Stub_table::update_data_size_and_addralign): Ditto.
          (Stub_table::finalize_stubs): Ditto.
          (Stub_table::apply_cortex_a8_workaround_to_address_range): Ditto.
          (Stub_table::do_addralign_): Return address alignment in the
          (Stub_table::do_reset_address_and_file_offset): Define method in
          class definition instead of declaring it there.  Set current data
          size to be the data size of the previous pass.
          (Stub_table::set_final_data_size): Use current data size as the
          final data size.
          (Stub_table::relocate_stub): Change parameter type of stub from
          Reloc_stub pointer to Stub pointer.
          (Stub_table::addralign_, Stub_table::has_been_changed_): Remove.
          (Stub_table::Cortex_a8_stub_list): New typedef.
          (Stub_table::cortex_a8_stubs_, Stub_table::prev_data_size_,
           Stub_table::prev_addralign_): New data member.
          (Arm_relobj::Arm_relobj): Initialize data member
          section_has_cortex_a8_workaround_.
          (Arm_relobj::section_has_cortex_a8_workaround,
           Arm_relobj::mark_section_for_cortex_a8_workaround): New method
           definitions.
          (Arm_relobj::section_has_cortex_a8_workaround_): New data member
          declarations.
          (Target_arm::relocate_stub): Change parameter type of stub from
          Reloc_stub pointer to Stub pointer.
          (Insn_template::size, Insn_template::alignment): Handle
          THUMB16_SPECIAL_TYPE.
          (Stub_table::remove_all_cortex_a8_stubs, Stub_table::finalize_stubs,
           Stub_table::update_data_size_and_addralign,
           Stub_table::apply_cortex_a8_workaround_to_address_range): New method
          definitions.
          (Stub_table::relocate_stubs): Handle Cortex-A8 stubs.
          (Stub_table::do_write): Ditto.
          (Target_arm::do_relax): Adjust code for changes in Stub_table.

2010-01-08  Ian Lance Taylor  <iant@google.com>

        PR 11108
        * symtab.h (class Symbol): Remove fields is_target_special_ and
        has_plt_offset_.  Add field is_defined_in_discarded_section_.
        (Symbol::is_defined_in_discarded_section): New function.
        (Symbol::set_is_defined_in_discarded_section): New function.
        (Symbol::has_plt_offset): Rewrite.
        (Symbol::set_plt_offset): Verify that new offset is not -1U.
        * symtab.cc (Symbol::init_fields): Initialize plt_offset_ to -1U.
        Don't initialize is_target_special_ or has_plt_offset_.
        Initialize is_defined_in_discarded_section_.
        (Symbol_table::add_from_relobj): If appropriate, set
        is_defined_in_discarded_section.
        * resolve.cc (Symbol::override_base_with_special): Don't test
        is_target_special_.  Change has_plt_offset_ to has_plt_offset().
        * target-reloc.h (relocate_section): Do special handling for
        symbols defined in discarded sections for global symbols as well
        as local symbols.

2010-01-08  Ian Lance Taylor  <iant@google.com>

        * dynobj.cc (big_endian>::find_dynsym_sections): Set pi to NULL in
        the SHT_SYMTAB case.

2010-01-08  Ian Lance Taylor  <iant@google.com>

        * object.cc (Sized_relobj::do_layout): Don't get confused if
        layout_eh_frame returns NULL.

2010-01-08  Ian Lance Taylor  <iant@google.com>

        PR 11084
        * dynobj.cc (Sized_dynobj::find_dynsym_sections): If there is no
        dynamic symbol table, use the normal symbol table.
        (Sized_dynobj::do_read_symbols): Remove assertion about type of
        symbol table.

2010-01-08  Ian Lance Taylor  <iant@google.com>

        PR 11072
        * layout.cc (Layout::include_section): Remove .gnu_debuglink
        sections.

2010-01-08  H.J. Lu  <hongjiu.lu@intel.com>

        * version.cc (print_version): Change to "Copyright 2010".

2010-01-08  Ian Lance Taylor  <iant@google.com>

        PR 10287
        PR 11063
        * i386.cc (class Target_i386): Change return type of plt_section
        to be non-const.
        (class Output_data_plt_i386): Add tls_desc_rel_ field.
        (Output_data_plt_i386::Output_data_plt_i386): Initialize
        tls_desc_rel_ field.
        (Output_data_plt_i386::rel_tls_desc): New function.
        (Target_i386::rel_tls_desc_section): New function.
        (Target_i386::Scan::local): Rewrite R_386_TLS_GOTDESC handling.
        (Target_i386::Scan::global): For R_386_TLS_GOTDESC put
        R_386_TLS_DESC reloc in rel_tls_desc_section.
        * x86_64.cc (class Target_x86_64): Add tlsdesc_reloc_info_ field.
        Define struct Tlsdesc_info.
        (Target_x86_64::Target_x86_64): Initialize tlsdesc_reloc_info_.
        (Target_x86_64::do_reloc_symbol_index): New function.
        (Target_x86_64::add_tlsdesc_info): New function.
        (class Output_data_plt_x86_64): Add tlsdesc_rel_ field.
        (Output_data_plt_x86_64::Output_data_plt_x86_64): Initialize
        tlsdesc_rel_ field.
        (Output_data_plt_x86_64::rela_plt): Rename from rel_plt.  Change
        all callers.
        (Output_data_plt_x86_64::rela_tlsdesc): New function.
        (Target_x86_64::rela_tlsdesc_section): New function.
        (Target_x86_64::Scan::local): Rewrite R_X86_64_GOTPC32_TLSDESC
        handling.
        (Target_x86_64::Scan::global): For R_X86_64_GOTPC32_TLSDESC put
        (Target_x86_64::do_reloc_addend): New function.
        R_X86_64_TLSDESC reloc in rela_tlsdesc_section.
        * output.h (class Output_reloc) [SHT_REL]: Add new constructor
        declarations.  Define TARGET_CODE.  Add arg field to u1_ union.
        (Output_reloc::type): New function.
        (Output_reloc::is_local_section_symbol): Check for TARGET_CODE.
        (Output_reloc::is_target_specific): New function.
        (Output_reloc::target_arg): New function.
        (class Output_reloc) [SHT_RELA]: Add four new constructors for
        absolute relocs and target specific relocs.
        (class Output_data_reloc) [SHT_REL]: Add add_absolute and
        add_target_specific.
        (class Output_data_reloc) [SHT_RELA]: Likewise.
        * output.cc (Output_reloc::Output_reloc): Add four new versions
        for absolute relocs and target specific relocs.
        (Output_reloc::set_needs_dynsym_index): Add TARGET_CODE case.
        (Output_reloc::get_symbol_index): Likewise.
        (Output_reloc::local_section_offset): Check that local_sym_index_
        is not TARGET_CODE or 0.
        (Output_reloc::symbol_value): Likewise.
        (Output_reloc::write) [SHT_RELA]: Call target for target specific
        reloc.
        * target.h (class Target): Add reloc_symbol_index and reloc_addend
        functions.  Add do_reloc_symbol_index and do_reloc_addend virtual
        functions.
        * layout.cc (add_target_dynamic_tags): Use output section for
        DT_PLTRELSZ and DT_JMPREL.

2010-01-07  Ian Lance Taylor  <iant@google.com>

        PR 11061
        * output.h (class Output_reloc) [SHT_RELA]: Add is_relative
        function.
        (class Output_data_reloc_generic): Define.
        (class Output_data_reloc_base): Change base class to
        Output_data_reloc_generic.  Change add() method to call
        bump_relative_reloc_count for a relative reloc.  Remove
        sort_relocs_ field.
        * output.cc (Output_data_reloc_base::do_write): Change sort_reloc_
        to sort_relocs().
        * layout.cc (Layout::add_target_dynamic_tags): Change dyn_rel to
        Output_data_reloc_generic*.  Add DT_RELCOUNT/DT_RELACOUNT tag if
        appropriate.
        * layout.h (class Layout): Update declaration.

2010-01-07  Ian Lance Taylor  <iant@google.com>

        * output.h (class Output_data): Add const version of
        output_section and do_output_section.
        (class Output_section_data): Add const version of
        do_output_section.
        (class Output_section): Likewise.
        * layout.cc (Layout::add_target_dynamic_tags): New function.
        * layout.h (class Layout): Update declarations.
        * arm.cc (Target_arm::do_finalize_sections): Use
        add_target_dynamic_tags.
        * i386.cc (Target_i386::do_finalize_sections): Likewise.
        * powerpc.cc (Target_powerpc::do_finalize_sections): Likewise.
        * sparc.cc (Target_sparc::do_finalize_sections): Likewise.
        * x86_64.cc (Target_x86_64::do_finalize_sections): Likewise.

2010-01-07  Ian Lance Taylor  <iant@google.com>

        PR 11042
        * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Mark the dynamic
        object as needed.

2010-01-07  Dmitry Gorbachev  <d.g.gorbachev@gmail.com>
            Ian Lance Taylor  <iant@google.com>

        PR 11019
        * object.cc: Instantiate Xindex::initialize_symtab_xindex and
        Xindex::read_symtab_xindex.

2010-01-07  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Insn_template::Type): New enum value THUMB16_SPECIAL_TYPE.
        (Insn_template::thumb16_bcond_insn): New method declaration.
        (Insn_template): Fix spelling.
        (Stub::thumb16_special): New method declaration.
        (Stub::do_write): Define virtual method which was previously pure
        virtual.
        (Stub::do_thumb16_special): New method declaration.
        (Stub::do_fixed_endian_write): New template member.
        (Reloc_stub::do_write): Remove.
        (Reloc_stub::do_fixed_endian_write): Remove.
        (Cortex_a8_stub): New class definition.
        (Stub_factory::make_cortex_a8_stub): New method definition.
        (Stub_factory::Stub_factory): Add missing static storage class
        qualifier for elf32_arm_stub_a8_veneer_blx.

2010-01-07  Ian Lance Taylor  <iant@google.com>

        PR 10980
        * options.h (class General_options): Add --warn-unresolved-symbols
        and --error-unresolved-symbols.
        * errors.cc (Errors::undefined_symbol): Implement
        --warn-unresolved-symbols.

        * options.h (class General_options): Add -z text and -z textoff.
        * layout.cc (Layout::finish_dynamic_section): Implement -z text.

2010-01-06  Sriraman Tallam  <tmsriram@google.com>

        * gc.h (Garbage_collection::Cident_section_map): New typedef.
        (Garbage_collection::cident_sections): New function.
        (Garbage_collection::add_cident_section): New function.
        (Garbage_collection::cident_sections_): New member.
        (gc_process_relocs): Add references to sections whose names are C
        identifiers.
        * gold.h (cident_section_start_prefix): New constant.
        (cident_section_stop_prefix): New constant.
        (is_cident): New function.
        * layout.cc (Layout::define_section_symbols): Replace string constants
        with the newly defined constants.
        * object.cc (Sized_relobj::do_layout): Track sections whose names are
        C identifiers.
        * testsuite/Makefile.am: Add gc_orphan_section_test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/gc_orphan_section_test.cc: New file.
        * testsuite/gc_orphan_section_test.sh: New file.

2010-01-06  Ian Lance Taylor  <iant@google.com>

        PR 10980
        * options.h (class General_options): Add --warn-shared-textrel.
        * layout.cc (Layout::finish_dynamic_section): Implement
        --warn-shared-textrel.

        PR 10980
        * options.h (class General_options): Add --warn-multiple-gp.

2010-01-06  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * Makefile.am (incremental_dump_DEPENDENCIES): Remove
        $(THREADSLIB) and $(LIBDL).
        * Makefile.in: Rebuild.

2010-01-06  Ian Lance Taylor  <iant@google.com>

        PR 10980
        * options.cc (General_options::parse_section_start): New function.
        (General_options::section_start): New function.
        (General_options::General_options): Initialize all members.
        * options.h: Include <map>
        (class General_options): Add --section-start.  Add section_starts_
        member.
        * layout.cc (Layout::attach_allocated_section_to_segment): If
        --section-start was used, set the address of the segment.  Remove
        local sort_sections.
        (Layout::relaxation_loop_body): If the address of the load segment
        has been set by --section-start, don't use it.
        * output.h (Output_segment::update_flags_for_output_section): New
        function.
        * output.cc (Output_segment::add_output_section): Call
        update_flags_for_output_section.

2010-01-05  Ian Lance Taylor  <iant@google.com>

        PR 10980
        * options.h (class General_options): Add --undefined-version.
        * script.cc (struct Version_expression): Add was_matched_by_symbol
        field.
        (Version_script_info::matched_symbol): New function.
        (Version_script_info::get_symbol_version_helper): Call
        matched_symbol.
        (Version_script_info::check_unmatched_names): New function.
        * script.h (class Version_script_info): Update declarations.
        * gold.cc (queue_middle_tasks): Handle --no-undefined-version.

        * options.h (class General_options): Use DEFINE_bool_alias for
        allow_multiple_definition.
        * resolve.cc (Symbol_table::should_override): Don't test
        allow_multiple_definition.

        PR 10980
        * options.h (class General_options): Add --cref.
        * main.cc (main): Print cref table if --cref.  Don't close mapfile
        until after printing cref table.
        * cref.cc: Include "symtab.h".
        (class Cref_inputs): Define Cref_table_compare and Cref_table.
        (Cref_table_compare::operator()): New function.
        (Cref_inputs::gather_cref): New function.
        (filecol): New static const.
        (Cref_inputs::print_cref): New function.
        (Cref::print_cref): New function.
        * cref.h: Include <cstdio>.
        (class Cref): Update declarations.
        * mapfile.h (Mapfile::file): New function.
        * object.h (class Object): Define Symbols.  Declare virtual
        do_get_global_symbols.
        (Object::get_global_symbols): New function.
        * object.cc (Input_objects::add_object): Pass object to cref_ if
        --cref.
        (Input_objects::archive_start): Likewise.
        (Input_objects::archive_stop): Likewise.
        (Input_objects::print_cref): New function.
        * dynobj.h (Sized_dynobj::do_get_global_symbols): New function.
        * dynobj.cc (big_endian>::do_add_symbols): Create symbols_ if
        --cref.
        * plugin.cc (Sized_pluginobj::do_get_global_symbols): New
        function.
        * plugin.h (class Sized_pluginobj): Update declarations.

2010-01-05  Ian Lance Taylor  <iant@google.com>

        * symtab.cc (Symbol_table::add_from_object): Rename def parameter
        to is_default_version.  Rename insdef to insdefault.
        (Symbol_table::add_from_relobj): Rename def to is_default_version
        and local to is_forced_local.
        (Symbol_table::add_from_pluginobj): Likewise.
        (Symbol_table::add_from_dynobj): Likewise.
        (Symbol_table::define_special_symbol): Rename insdef to
        insdefault.

2010-01-04  Ian Lance Taylor  <iant@google.com>

        PR 10980
        * options.h (class General_options): Add
        --allow-multiple-definition and -z muldefs.
        * resolve.cc (Symbol_table::should_override): Don't warn about a
        multiple symbol definition if --allow-multiple-definition or -z
        muldefs.

        PR 10980
        * options.h (class General_options): Add --add-needed and
        --copy-dt-needed-entries.  Tweak --as-needed help entry.
        * object.cc (Input_objects::check_dynamic_dependencies): Give an
        error if --copy-dt-needed-entries aka --add-needed is used and
        would cause a change in behaviour.

        PR 10980
        * options.h (class General_options): Add -G as a short version of
        --shared.  Add no-op options -assert, -g, and -i.

2010-01-04  Sriraman Tallam  <tmsriram@google.com>

        * gc.h (gc_process_relocs): Call is_section_foldable_candidate to
        check for .text or .gnu.linkonce.t sections.
        * icf.cc (Icf::find_identical_sections): Ditto.
        Change the detection for mangled function name within the section
        name.
        * icf.h (is_section_foldable_candidate): New function.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10980
        * options.h (class General_options): Permit two dashes with
        --retain-symbols-file.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10979
        * layout.cc (Layout::relaxation_loop_body): If -Ttext was used,
        don't put the file header and segment headers in the text
        segment.

        PR 10979
        * common.cc (Sort_commons::operator()): Stabilize sort when both
        entries are NULL.
        (Symbol_table::do_allocate_commons_list): When allocating common
        symbols, skip a symbol which is no longer common.
        * symtab.h (Symbol::is_common): Test whether the symbol comes from
        an object before checking its type.
        * testsuite/common_test_2.c: New file.
        * testsuite/common_test_3.c: New file.
        * testsuite/Makefile.am (check_PROGRAMS): Add common_test_2.
        (common_test_2_SOURCES, common_test_2_DEPENDENCIES): Define.
        (common_test_2_LDFLAGS, common_test_2_LDADD): Define.
        (common_test_2_pic.o, common_test_2.so): New targets.
        (common_test_3_pic.o, common_test_3.so): New targets.
        * testsuite/Makefile.in: Rebuild.

        PR 10979
        * script.cc (read_input_script): If we see a new SECTIONS clause,
        and we have added an input section, give an error.
        * layout.h (class Layout): Add have_added_input_section function.
        Add have_added_input_section_ field.
        * layout.cc (Layout::Layout): Initialize
        have_added_input_section_.
        (Layout::layout): Set have_added_input_section_.
        (Layout::layout_eh_frame): Likewise.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10931
        * options.h (class General_options): Add --sort-common option.
        * symtab.h (class Symbol_table): Define Sort_commons_order enum.
        * common.cc (Sort_common): Add sort_order parameter to
        constructor.  Add sort_order_ field.
        (Sort_commons::operator): Check sort_order_.
        (Symbol_table::allocate_commons): Determine the sort order.
        (Symbol_table::do_allocate_commons): Add sort_order parameter.
        Change all callers.
        (Symbol_table::do_allocate_commons_list): Likewise.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10916
        * symtab.cc (Symbol_table::add_from_relobj): When not exporting
        symbols from this object, don't change the visibility of an
        undefined symbol.
        * testsuite/exclude_libs_test_1.c (lib1_ref): New function.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10861
        * script.h (class Version_script_info): Define Language enum.
        Update declarations.  Define Glob, Exact, and Lookup types.  Add
        new fields globals_, locals_, and is_finalized_.
        * script.cc: Various formatting fixes.
        (class Parser_closure): Change language_stack_ from a vector of
        std::string to one of Version_script_info::Language.  Adjust all
        uses accordingly.
        (class Lazy_demangler): Remove.
        (struct Version_expression): Change language from std::string to
        Version_script_info::Language.
        (Version_script_info::Version_script_info): New function.
        (Version_script_info::~Version_script_info): Don't call clear.
        (Version_script_info::finalize): New function.
        (Version_script_info::build_lookup_tables): New function.
        (Version_script_info::build_expression_list_lookup): New
        function.
        (Version_script_info::get_symbol_version_helper): Rewrite to use
        lookup tables.
        (Version_script_info::print_expression_list): Adjust to use
        Version_script_info::Language.
        (script_push_lex_into_version_mode): Check that the version script
        has not been finalized.
        (version_script_push_lang): Change language string to
        Version_script_info::Language.
        * options.cc (Command_line::version_script): New function.
        * options.h (class General_options): Add finalize_dynamic_list
        function.  Change version_script from declaration to definition.
        * testsuite/ver_test_4.script: Remove duplicate def of t2_2.
        * testsuite/version_script.map: Remove duplicate def of foo.
        * testsuite/Makefile.am (ver_matching_def.so): Depend upon
        version_script.map.
        * testsuite/Makefile.in: Rebuild.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10843
        * target-reloc.h (relocate_for_relocatable): When copying a reloc,
        if the input symbol index is 0, make the output symbol index 0.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10670
        * options.h (class General_options): Add -x/--discard-all.
        * object.cc (Sized_relobj::do_count_local_symbols): Handle
        --discard-all.  If the local symbol needs a dynamic entry, check
        that before handling --discard-locals.

2009-12-30  Ian Lance Taylor  <iant@google.com>

        PR 10450
        * output.cc (Output_segment::Output_segment): If PT_TLS, set the
        flags to PF_R.
        (Output_segment::add_output_section): Don't change the flags if
        the type is PT_TLS.

        PR 10450
        * dynobj.cc (Dynobj::create_gnu_hash_table): Add symbols to the
        GNU hash table if they need a dynamic value.  Otherwise, don't add
        them if they are defined in a dynamic object or are forced local.

2009-12-29  Ian Lance Taylor  <iant@google.com>

        PR 10450
        * layout.cc (Layout::create_dynamic_symtab): Only set entsize of
        .gnu.hash table for a 32-bit target.

        PR 10450
        * symtab.h (Symbol::needs_dynsym_entry): A symbol in both a
        regular and a dynamic object only needs a dynamic symbol table
        entry if it is externally visible.

        PR 10450
        * i386.cc (class Target_i386): Initialize global_offset_table_ in
        constructor.  Add global_offset_table_ field.
        (Target_i386::got_section): Set global_offset_table_.
        (Target_i386::do_finalize_sections): Set global_offset_table_
        size.
        * x86_64.cc (class Target_x86_64): Initialize global_offset_table_
        in constructor.  Add global_offset_table_ field.
        (Target_x86_64::got_section): Set global_offset_table_.
        (Target_x86_64::do_finalize_sections): Set global_offset_table_
        size.

        * layout.cc (Layout::Layout): Initialize increase_relro_.
        (Layout::get_output_section): Add is_relro, is_last_relro, and
        is_first_non_relro parameters.  Change all callers.
        (Layout::choose_output_section): Likewise.
        (Layout::add_output_section_data): Likewise.
        (Layout::make_output_section): Likewise.
        (Layout::set_segment_offsets): Clear increase_relro when using a
        linker script.
        * layout.h (class Layout): Add increase_relro method.  Add
        increase_relro_ field.  Update declarations.
        * output.cc (Output_section::Output_section): Initialize
        is_last_relro_ and is_first_non_relro_.
        (Output_segment::add_output_section): Group relro sections is
        do_sort is true.  Handle is_last_relro and is_first_non_relro.
        (Output_segment::maximum_alignment): Remove relro handling.
        (Output_segment::set_section_addresses): Add increase_relro
        parameter.  Change all callers.  Add initial alignment to align
        relro sections on separate page.  Remove old relro handling.
        (Output_segment::set_section_list_addresses): Remove in_relro
        parameter.  Change all callers.
        (Output_segment::set_offset): Add increase parameter.  Change all
        callers.  Remove old relro handling.
        * output.h (class Output_section): Add new methods: is_last_relro,
        set_is_last_relro, is_first_non_relro, set_is_first_non_relro.
        Add is_last_relro_ and is_first_non_relro_ fields.
        * i386.cc (Target_i386::got_section): Don't call set_is_relro.
        Create separate .got.plt section.  Call increase_relro.
        * x86_64.cc (Target_x86_64::got_section): Likewise.
        * testsuite/relro_script_test.t: Add .got.plt.

        PR 10450
        * layout.cc (Layout::Layout): Initialize dynamic_symbol_ field.
        (Layout::create_initial_dynamic_sections): Set dynamic_symbol_.
        (Layout::finalize): Call set_dynamic_symbol_size.
        (Layout::set_dynamic_symbol_size): New function.
        * layout.h (class Layout): Add dynamic_symbol_ field.  Declare
        set_dynamic_symbol_size.

        PR 10450
        * output.h (class Output_section): Add is_entsize_zero_ field.
        * output.cc (Output_section::Output_section): Initialize
        is_entsize_zero_.
        (Output_section::set_entsize): If two different entsizes are
        requested, force it to zero.
        (Output_section::add_input_section): Set flags for .debug_str
        before updating section flags.  Set entsize.
        (Output_section::update_flags_for_input_section): Set SHF_MERGE
        and SHF_STRING if all input sections have those flags.

2009-12-29   Rafael Espindola  <espindola@google.com>

        * main.cc (main): Fix the sys time reporting.
        * workqueue.cc (Workqueue::find_and_run_task): Fix the sys time
        reporting.

2009-12-29  Sriraman Tallam  <tmsriram@google.com>

        * options.cc (General_options::parse_version): Allow -v to exit
        without an error if there is nothing to link.

2009-12-29  Ian Lance Taylor  <iant@google.com>

        * configure.ac: Set the MCMODEL_MEDIUM conditional to false if
        using a version of gcc before 4.1.
        * configure: Rebuild.

2009-12-28  Chris Demetriou  <cgd@google.com>

        * attributes.cc (Output_attributes_section_data::do_write): Use
        std::vector::front rather than std::vector::data.

2009-12-28  Ian Lance Taylor  <iant@google.com>

        * symtab.h (class Symbol_table): Add enum Defined.
        * resolve.cc (Symbol_table::should_override): Add defined
        parameter.  Change all callers.  Test whether object is NULL
        before calling a method on it.
        (Symbol_table::report_resolve_problem): Add defined parameter.
        Change all callers.
        (Symbol_table::should_override_with_special): Likewise.
        * symtab.cc (Symbol_table::define_in_output_data): Add defined
        parameter.  Change all callers.
        (Symbol_table::do_define_in_output_data): Likewise.
        (Symbol_table::define_in_output_segment): Likewise.
        (Symbol_table::do_define_in_output_segment): Likewise.
        (Symbol_table::define_as_constant): Likewise.
        (Symbol_table::do_define_as_constant): Likewise.
        * script.h (class Symbol_assignment): Add is_defsym parameter to
        constructor; change all callers.
        * script.cc (Script_options::add_symbol_assignment): Add is_defsym
        parameter.  Change all callers.  Add is_defsym_ field.
        (class Parser_closure): Add parsing_defsym parameter to
        constructor; change all callers.  Add parsing_defsym accessor
        function.  Add parsing_defsym_ field.

2009-12-28  Ian Lance Taylor  <iant@google.com>

        * gold.cc (queue_middle_tasks): Fix formatting.
        * object.cc (Relobj::is_section_name_included): Likewise.

2009-12-23  Ian Lance Taylor  <iant@google.com>

        * i386.cc (Target_i386::do_calls_non_split): Recognize
        -fsplit-stack prologue for a function with a static chain.
        * x86_64.cc (Target_x86_64::do_calls_non_split): Recognize
        -fsplit-stack prologue when using %r11.

2009-12-21  Sriraman Tallam  <tmsriram@google.com>

        * options.cc (General_options::parse_version): Make -v continue and do
        the link like GNU ld does.

2009-12-17  Rafael Avila de Espindola  <espindola@google.com>

        * Makefile.am (CCFILES): Add timer.cc.
        (HFILES): Add timer.h.
        * configure.ac: Check for sysconf and times.
        * main.cc: include timer.h.
        (main): Use Timer instead of get_run_time.
        * timer.cc: New.
        * timer.h: New.
        * workqueue.cc: include timer.h.
        (Workqueue::find_and_run_task):
        Report user, sys and wall time.
        * Makefile.in: Regenerate.
        * config.in: Regenerate.
        * configure: Regenerate.

2009-12-16  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::scan_sections_for_stubs): Exclude ICF-eliminated
        sections.
        * object.cc (Sized_relobj::do_finalize_local_symbols): Handle
        relaxed input sections.
        * output.cc (Output_section::find_relaxed_input_section): Change
        return type to Output_relaxed_input_section pointer.  Adjust code
        for new type of relaxed_input_section_map_.
        * output.h (Output_section::find_relaxed_input_section): Change
        return type to Output_relaxed_input_section pointer.
        (Output_section::Output_relaxed_input_section_by_input_section_map):
        New type.
        (Output_section::relaxed_input_section_map_): Change type to
        Output_section::Output_relaxed_input_section_by_input_section_map.
        * symtab.cc (Symbol_table::compute_final_value): Handle relaxed
        input section.

2009-12-15  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::create_shstrtab): Only write out after input
        sections if we are compressing debug sections.

2009-12-15  Ian Lance Taylor  <iant@google.com>

        * archive.cc (Archive::add_symbols): Only look up a symbol without
        a version if there is, in fact, a version.

2009-12-14  Ian Lance Taylor  <iant@google.com>

        Revert -Wshadow changes, all changes from:
        2009-12-11  Doug Kwan  <dougkwan@google.com>
        2009-12-11  Nick Clifton  <nickc@redhat.com>
        * configure.ac: Remove -Wshadow when setting WARN_CXXFLAGS.

2009-12-11  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::do_finalize_sections): Fix build breakage
        due to -Wshadow.
        * attributes.cc (Object_attribute::size): Ditto.
        (Attributes_section_data::size): Ditto.
        (Attributes_section_data::Attributes_section_data): Ditto.
        (Output_attributes_section_data::do_write): Ditto.
        * attributes.h (Object_attribute::set_type): Ditto.
        * testsuite/tls_test_main.cc (safe_lock, safe_unlock): Ditto.

2009-12-11  Nick Clifton  <nickc@redhat.com>

        * archive.cc: Fix shadowed variable warnings.
        * arm.cc: Likewise.
        * compressed_output.cc: Likewise.
        * compressed_output.h: Likewise.
        * configure: Likewise.
        * dwarf_reader.cc: Likewise.
        * dynobj.cc: Likewise.
        * dynobj.h: Likewise.
        * ehframe.cc: Likewise.
        * ehframe.h: Likewise.
        * errors.cc: Likewise.
        * expression.cc: Likewise.
        * fileread.cc: Likewise.
        * fileread.h: Likewise.
        * freebsd.h: Likewise.
        * i386.cc: Likewise.
        * icf.cc: Likewise.
        * incremental.h: Likewise.
        * layout.cc: Likewise.
        * layout.h: Likewise.
        * mapfile.cc: Likewise.
        * merge.cc: Likewise.
        * merge.h: Likewise.
        * object.cc: Likewise.
        * object.h: Likewise.
        * options.h: Likewise.
        * output.cc: Likewise.
        * output.h: Likewise.
        * parameters.cc: Likewise.
        * plugin.cc: Likewise.
        * powerpc.cc: Likewise.
        * reduced_debug_output.cc: Likewise.
        * reduced_debug_output.h: Likewise.
        * reloc.cc: Likewise.
        * reloc.h: Likewise.
        * resolve.cc: Likewise.
        * script-sections.cc: Likewise.
        * script.cc: Likewise.
        * script.h: Likewise.
        * sparc.cc: Likewise.
        * symtab.cc: Likewise.
        * symtab.h: Likewise.
        * target-select.cc: Likewise.
        * target-select.h: Likewise.
        * token.h: Likewise.
        * workqueue.cc: Likewise.
        * workqueue.h: Likewise.
        * x86_64.cc: Likewise.

2009-12-10  Doug Kwan  <dougkwan@google.com>

        * arm.cc (attributes.h): New include.
        (Arm_relobj::Arm_relobj): Initialize attributes_section_data_.
        (Arm_relobj::~Arm_relobj): Delete object pointed by
        attributes_section_data_.
        (Arm_relobj::attributes_section_data): New method definition.
        (Arm_relobj::attributes_section_data_): New data member declaration.
        (Arm_dynobj::Arm_dynobj): Initialize attributes_section_data_.
        (Arm_dynobj::~Arm_dynobj): Delete object pointed by
        attributes_section_data_.
        (Arm_dynobj::attributes_section_data): New method definition.
        (Arm_dynobj::attributes_section_data_): New data member declaration.
        (Target_arm::Target_arm): Initialize attributes_section_data_.  Change
        initialization value of may_use_blx_ to false.
        (Target_arm::using_thumb2, Target_arm::using_thumb_only,
        Target_arm::may_use_arm_nop, Target_arm::may_use_thumb2_nop): Use
        object attributes to compute results instead of hard-coding.
        (Target_arm::do_attribute_arg_type, Target_arm::do_attributes_order,
        Target_arm::get_secondary_compatible_arch,
        Target_arm::set_secondary_compatible_arch
        Target_arm::tag_cpu_arch_combine, Target_arm::aeabi_enum_name,
        Target_arm::tag_cpu_name_value, Target_arm::merge_object_attributes):
        New method declarations.
        (Target_arm::get_aeabi_object_attribute): New method definition.
        (Target_arm::attributes_section_data_): New data member declaration.
        (read_arm_attributes_section): New template definition.
        (Arm_relobj::do_read_symbols): Read attributes section if it exists.
        (Arm_dynobj::do_read_symbols): Ditto.
        (Target_arm::do_finalize_sections): Merge attributes sections from
        input.  Check for BLX use after attributes section merging.
        Fix __exidx_start and __exidx_end visibility.  Create an
        .ARM.attributes section if necessary.
        (Target_arm::get_secondary_compatible_arch,
        Target_arm::set_secondary_compatible_arch,
        Target_arm::tag_cpu_arch_combine, Target_arm::aeabi_enum_name,
        Target_arm::tag_cpu_name_value, Target_arm::merge_object_attributes,
        Target_arm::do_attribute_arg_type, Target_arm::do_attributes_order): 
        New method definitions.

2009-12-09  Ian Lance Taylor  <iant@google.com>

        * plugin.cc (Plugin::load): Don't cast from void* to a function
        pointer.

2009-12-09  Ian Lance Taylor  <iant@google.com>

        * dynobj.cc (Sized_dynobj::do_read_symbols): Clear version
        information fields.

2009-12-09  H.J. Lu  <hongjiu.lu@intel.com>

        * testsuite/Makefile.am (two_file_shared_1_pic_2_test_DEPENDENCIES):
        Replace two_file_shared_1.so with two_file_shared_2.so.
        * testsuite/Makefile.in: Regenerated.

2009-12-08  Doug Kwan  <dougkwan@google.com>

        * Makefile.am (CCFILES): Add attributes.cc and int_encoding.cc.
        (HFILES): Add attributes.h and int_encoding.h.
        * Makefile.in: Regenerate.
        * dwarf_reader.cc (read_unsigned_LEB_128, read_signed_LEB_128): Move
        function definitions to int_encoding.cc
        * dwarf_reader.h (read_unsigned_LEB_128, read_signed_LEB_128): Move
        prototypes to int_encoding.h
        * reduced_debug_output.cc (int_encoding.h): New include.
        (write_unsigned_LEB_128, get_length_as_unsigned_LEB_128): Move
        function definitions to int_encoding.cc
        (insert_into_vector, read_from_pointer): Move template definitions to
        int_encoding.h
        * attributes.cc: New file.
        * attributes.h: New file.
        * int_encoding.cc: New file.
        * int_encoding.h: New file.

2009-12-07  Rafael Avila de Espindola  <espindola@google.com>

        PR gold/11055
        * incremental-dump.cc (dump_incremental_inputs): New.
        (main): Use dump_incremental_inputs.

2009-12-07  H.J. Lu  <hongjiu.lu@intel.com>

        PR gold/10893
        * i386.cc (Target_i386::Scan::globa): Use is_func instead of
        checking elfcpp::STT_FUNC.
        (Target_i386::Relocate::relocate): Likewise.
        * x86_64.cc (Target_x86_64::Scan::global): Likewise.

        * symtab.cc (Symbol_table::sized_write_symbol): Turn IFUNC
        symbols from shared libraries into normal FUNC symbols.

        * symtab.h (Symbol): Add is_func and use it.

2009-12-05  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::arm_info): Initialize new fields
        attributes_section and attributes_vendor.
        * i386.cc (Target_i386::i386_info): Same.
        * object.cc (Sized_relobj::do_layout): Skip attribute section.
        * gold/powerpc.cc (Target_powerpc::powerpc_info): Initialize new
        fields attributes_section and attributes_vendor.
        * sparc.cc (Target_sparc::sparc_info): Same.
        * target.h (Target::attributes_section, Target::attributes_vendor,
        Target::is_attributes_section, Target::attribute_arg_type,
        Target::attributes_order): New method definitions.
        (Target::Target_info::attributes_section,
        Target::Target_info::attributes_vendor): New fields.
        (Target::do_attribute_arg_type, Target::do_attributes_order): New
        virtual method definitions.
        * x86_64.cc (Target_x86_64::x86_64_info): Initialize new fields
        attributes_section and attributes_vendor.
        * testsuite/testfile.cc (Target_test::test_target_info): Same.

2009-12-05  Doug Kwan  <dougkwan@google.com>

        * arm.cc: Update comments about interworking and stub generation.
        (Target_arm::Relocate::reloc_is_non_pic): Update list of relocations
        considered as non-PIC.
        (Arm_relocate_functions::base_abs): Fix formatting.
        (Arm_relocate_functions::got_prel): Fix comment.  Change interface
        of function to use GOT entry address instead of offset.
        (Target_arm::Scan::global): Issue an error if a symbol would need a
        PLT does not get one because it is untyped.  Remove code to create
        dynamic symbols for relative branches.
        (Target_arm::Relocate::relocate: Use 0 instead of false since function
        takes unsigned integer instead of boolean.

2009-12-05  H.J. Lu  <hongjiu.lu@intel.com>

        * testsuite/Makefile.am (constructor_test_LDADD): New. Empty.
        (two_file_test_LDADD): Likewise.
        (common_test_1_LDADD): Likewise.
        (exception_test_LDADD) Likewise.
        (weak_test_LDADD): Likewise.
        (many_sections_test_LDADD): Likewise.
        (initpri1_LDADD): Likewise.
        (script_test_1_LDADD): Likewise.
        (script_test_2_LDADD): Likewise.
        (justsyms_LDADD): Likewise.
        (binary_test_LDADD): Likewise.
        (large_LDADD): Likewise.
        * testsuite/Makefile.in: Regenerated.

2009-12-04  H.J. Lu  <hongjiu.lu@intel.com>

        * resolve.cc (symbol_to_bits): Treat STB_GNU_UNIQUE as STB_GLOBAL.
        (Symbol_table::override_with_special): Likewise.
        (Symbol_table::add_from_object): Likewise.

2009-12-04  Rafael Avila de Espindola  <espindola@google.com>

        * incremental.cc (Incremental_inputs::sized_create_inputs_section_data):
        Don't set the data_offset twice.

2009-12-04  Rafael Avila de Espindola  <espindola@google.com>

        * testsuite/Makefile.in: Regenerate.

2009-12-03  Doug Kwan  <dougkwan@google.com>

        * arm.cc: Remove comment about missing .ARM.exidx section symbols.
        (Target_arm::do_finalize_sections): Add parameter for symbol table
        pointer.  Add __exidx_start and __exidx_end symbols as appropriate.
        * i386.cc (Target_i386::do_finalize_sections): Add an additional
        parameter for symbol table pointer.
        * layout.cc (Layout::finalize): Call Target::finalize_sections with
        an additional parameter for a pointer to symbol table.
        * powerpc.cc (Target_powerpc::do_finalize_sections): Add an additional
        parameter for a symbol table pointer.
        * sparc.cc (Target_sparc::do_finalize_sections): Ditto.
        * target.h (Target::finalize_sections, Target::do_finalize_sections):
        Ditto.
        * x86_64.cc (Target_x86_64::do_finalize_sections): Add an additional
        parameter for a symbol table pointer.

2009-12-03  Rafael Avila de Espindola  <espindola@google.com>

        * incremental.cc (Incremental_inputs_header)
        (Incremental_inputs_header_write, Incremental_inputs_entry)
        (Incremental_inputs_entry_write): Move ...
        * incremental.h (Incremental_inputs_header)
        (Incremental_inputs_header_write, Incremental_inputs_entry)
        (Incremental_inputs_entry_write): here.

2009-12-02  Rafael Avila de Espindola  <espindola@google.com>

        * incremental.cc (make_sized_incremental_binary): Set the target.
        Error if it is incompatible.
        * output.h (Output_file): Add filename method.

2009-12-02  Rafael Avila de Espindola  <espindola@google.com>

        * incremental.cc (Incremental_inputs_entry): Remove unused argument
        from the get_* methods.

2009-12-02  Rafael Avila de Espindola  <espindola@google.com>

        * incremental-dump.cc (main): Check that the offeset of a script is 0.
        * incremental.cc (Incremental_inputs::sized_create_inputs_section_data):
        Write 0 for the data_offset of scripts.

2009-12-02  Rafael Avila de Espindola  <espindola@google.com>

        * testsuite/Makefile.am: Add the incremental_test.sh test.
        * testsuite/incremental_test.sh: New.
        * testsuite/incremental_test_1.c: New.
        * testsuite/incremental_test_2.c: New.

2009-12-01  Rafael Avila de Espindola  <espindola@google.com>

       * incremental-dump.cc (main): Fix typos.

2009-11-27  Rafael Avila de Espindola  <espindola@google.com>

        PR gold/11025
        * incremental-dump.cc (main): Use llu to print 64 bit values.

2009-11-26  Per Øyvind Karlsen <peroyvind@mandriva.org>
            H.J. Lu  <hongjiu.lu@intel.com>

        * Makefile.am (incremental_dump_DEPENDENCIES): Add $(THREADSLIB)
        $(LIBDL).
        (incremental_dump_LDADD): Likewise.
        * Makefile.in: Regenerated.

2009-11-25  Doug Kwan  <dougkwan@google.com>
        
        Revert:

        2009-11-25  Doug Kwan  <dougkwan@google.com>

                * arm.cc (Target_arm::Target_arm): Move method definition
                outside of class definition.  Add code to handle
                --target1-rel, --target1-abs and --target2= options.
                (Target_arm::get_reloc_reloc_type): Change method to be
                non-static and const.
                (Target_arm::target1_is_rel_, Target_arm::target2_reloc_):
                New data member declaration.
                (Target_arm::Scan::local, Target_arm::Scan::global,
                Target_arm::Relocate::relocate,
                Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
                Adjust call to Target_arm::get_real_reloc_type.
                (Target_arm::get_real_reloc_type): Use command line options
                to determine real types of R_ARM_TARGET1 and R_ARM_TARGET2.
                * options.h (--target1-rel, --target1-abs, --target2): New
                ARM-only options.

2009-11-25  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::Target_arm): Move method definition outside of
        class definition.  Add code to handle --target1-rel, --target1-abs
        and --target2= options.
        (Target_arm::get_reloc_reloc_type): Change method to be non-static
        and const.
        (Target_arm::target1_is_rel_, Target_arm::target2_reloc_): New data
        member declaration.
        (Target_arm::Scan::local, Target_arm::Scan::global,
        Target_arm::Relocate::relocate,
        Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): Adjust
        call to Target_arm::get_real_reloc_type.
        (Target_arm::get_real_reloc_type): Use command line options to
        determine real types of R_ARM_TARGET1 and R_ARM_TARGET2.
        * options.h (--target1-rel, --target1-abs, --target2): New ARM-only
        options.

2009-11-25  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::may_use_thumb2_nop): New method definition.
        (Arm_relocate_functions::thumb_branch_common): New metod declaration.
        (Arm_relocate_functions::abs12, Arm_relocate_functions::abs16): Fix
        formatting.
        (Arm_relocate_functions::thm_call): Replace body with a call to
        Arm_relocate_functions::thumb_branch_common.
        (Arm_relocate_functions::thm_jump24,
        Arm_relocate_functions::thm_xpc22): New method definitions.
        (Arm_relocate_functions::thumb_branch_common): New method definition.
        (Reloc_stub::stbu_type_for_reloc): Fix incorrect uses of bit-wise-or
        operator.
        (Target_arm::Relocate::relocate): Adjust call to thm_call.
        Add code to handle R_ARM_THM_XPC22 and R_ARM_THM_JUMP24.

2009-11-24  Rafael Avila de Espindola  <espindola@google.com>

        * Makefile.am: Build incremental-dump
        * Makefile.in: Regenerate.
        * incremental-dump.cc: New.
        * incremental.cc (Incremental_inputs_header_data,
        Incremental_inputs_entry_data): Move to incremental.h
        * incremental.h: (Incremental_inputs_header_data,
        Incremental_inputs_entry_data): Move from incremental.cc

2009-11-24  Rafael Avila de Espindola  <espindola@google.com>

        * incremental.cc (Incremental_inputs_header,
        Incremental_inputs_header_write, Incremental_inputs_entry,
        Incremental_inputs_entry_write): Add a typedef with the data type.

2009-11-24  Rafael Avila de Espindola  <espindola@google.com>

        * incremental.cc (Incremental_inputs_header,
        Incremental_inputs_header_write, Incremental_inputs_entry,
        Incremental_inputs_entry_write): Update comment about which
        type has the filed descriptions.

2009-11-15  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::may_use_arm_nop): New method definition.
        (Arm_relocate_functions::arm_branch_common): Change method defintion
        in class definition to a method declaration and update list of formal
        parameters.
        (Arm_relocate_functions::plt32, Arm_relocate_functions::call,
        Arm_relocation_functions::jump24): Adjust call to
        Arm_relocate_functions::arm_branch_common.  Update list of formal
        parameters.
        (Arm_relocate_functions::xpc25): New method definition.
        (Arm_relocate_functions::arm_branch_common): Move method defintion
        out from class definition.  Use stubs for mode-switching and extending
        branch ranges.
        (Target_arm::Relocate::relocate): Handle weakly-undefined symbols
        specially.  Change code to enable use of stubs in ARM branches.

2009-11-10  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::do_relocate_sections): Remove options parameter
        in method declaration.
        (Target_arm::relocate_stub): New method declaration.
        (Target_arm::default_target): Change to return a pointer instead of
        a const reference.
        (Reloc_stub::stub_type_for_reloc): Adjust for the change in
        Target_arm::default_target.
        (Arm_Relobj::do_relocate_sections): Remove options paramater in
        method definition.
        (Target_arm::relocate_section): Adjust view.
        (Target_arm::relocate_stub): New method definition.

2009-11-10  Doug Kwan  <dougkwan@google.com>

        * i386.cc (Target_i386::do_calls_non_split): Add a cast to avoid
        a format warning.
        * incremental.cc (open_incremental_binary): Initialized local
        variables to avoid warnings.
        * object.cc (make_elf_object): Ditto.
        * x86_64.cc (Target_x86_64::do_calls_non_split): Add a cast to avoid
        a format warning.
 
009-11-09  H.J. Lu  <hongjiu.lu@intel.com>

        PR gold/10930
        * testsuite/plugin_test.c: Include "config.h".

2009-11-09  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::fake_relnum_for_stubs): New constant.
        (arm_symbol_value): Remove.
        (Arm_relocate_functions::arm_branch_common,
        Arm_relocate_functions::abs8, Arm_relocate_functions::thm_abs5,
        Arm_relocate_functions::abs12, Arm_relocate_functions::abs16,
        Arm_relocate_functions::abs32, Arm_relocate_functions::rel32,
        Arm_relocate_functions::thm_call, Arm_relocate_functions::plt32,
        Arm_relocate_functions::call, Arm_relocate_functions::jump24,
        Arm_relocate_functions::prel31, Arm_relocate_functions::mov_abs_nc,
        Arm_relocate_functions::movt_abs, Arm_relocate_functions::movw_abs_nc,
        Arm_relocate_functions::thm_mobw_abs_nc,
        Arm_relocate_functions::thm_mov_abs,
        Arm_relocate_functions::movw_prel_nc,
        Arm_relocate_functions::thm_movt_abs,
        Arm_relocate_functions::movt_prel,
        Arm_relocate_functions::thm_movw_prel_nc,
        Arm_relocate_functions::thm_movt_prel): Adjust callers of the above.
        (Target_arm::Relocate::relocate): Only decompose address into two
        parts if relocation type uses the thumb-bit and pass the actual
        bit instead of a flag indicating that the thumb-bit is used.  Adjust
        calls to methods in Arm_relocate_functions for this change.

2009-11-08  Ian Lance Taylor  <iant@google.com>

        PR 10925
        * reloc.cc: Instantiate
        Sized_relobj::initialize_input_to_output_maps and
        Sized_relobj:free_input_to_output_maps.

2009-11-06  Ian Lance Taylor  <iant@google.com>

        PR 10876
        * defstd.cc (in_segment): Set only_if_ref true for "end".

2009-11-06  Doug Kwan  <dougkwan@google.com>

        * arm.cc (class Reloc_stub): Correct a comment.
        (Target_arm::Target_arm): Initialize arm_input_section_map_.
        (Target_arm::scan_section_for_stubs): New method declaration.
        (Target_arm::do_make_elf_object, Target_arm::do_make_output_section):
        Change methods from private to protected.
        (Target_arm::do_may_relax): New method definition.
        (Target_arm::do_relax, Target_arm::group_sections,
        Target_arm::scan_reloc_for_stub,
        Target_arm::scan_reloc_section_for_stubs): New method declarations.
        (Target_arm::arm_input_section_map_): New data member declaration.
        (Target_arm::scan_reloc_for_stub,
        Target_arm::scan_reloc_section_for_stubs,
        Target_arm::scan_section_for_stubs, Target_arm::group_sections,
        Target_arm::do_relax): New method definitions.

2009-11-06  Mikolaj Zalewski  <mikolaj@google.com>

        * configure.ac: Check for (struct stat)::st_mtim
        * fileread.cc (File_read::get_mtime): Use st_mtim if available.
        * config.in: Regenerate.
        * configure: Regenerate.

2009-11-05  Ian Lance Taylor  <iant@google.com>

        PR 10910
        * output.cc (Output_segment::add_output_section): Add missing
        return statement.

2009-11-04  Ian Lance Taylor  <iant@google.com>

        PR 10880
        * object.h (class Object): Add is_needed and set_is_needed
        methods.  Add is_needed_ field.  Make bool fields into bitfields.
        * symtab.cc (Symbol_table::set_dynsym_indexes): If a symbol is
        defined in a dynamic object and referenced by a regular object,
        set is_needed for the dynamic object.
        * layout.cc (Layout::finish_dynamic_section): Don't add DT_NEEDED
        if the file is marked with as_needed and it is not needed.

2009-11-04  Ian Lance Taylor  <iant@google.com>

        PR 10887
        * arm.cc (Target_arm::do_finalize_sections): Don't add dynamic
        tags if data is discarded by linker script.
        * i386.cc (Target_i386::do_finalize_sections): Likewise.
        * powerpc.cc (Target_powerpc::do_finalize_sections): Likewise.
        * sparc.cc (Target_sparc::do_finalize_sections): Likewise.
        * x86_64.cc (Target_x86_64::do_finalize_sections): Likewise.

2009-11-04  Ian Lance Taylor  <iant@google.com>

        * layout.cc (Layout::get_output_section): Add is_interp and
        is_dynamic_linker_section parameters.  Change all callers.
        (Layout::choose_output_section): Likewise.
        (Layout::make_output_section): Likewise.
        (Layout::add_output_section_data): Add is_dynamic_linker_section
        parameter.  Change all callers.
        * layout.h (class Layout): Update declarations.
        * output.h (class Output_section): Add is_interp, set_is_interp,
        is_dynamic_linker_section, set_is_dynamic_linker_section methods.
        Add is_interp_, is_dynamic_linker_section_ fields.  Change
        generate_code_fills_at_write_ to a bitfield.
        * output.cc (Output_section::Output_sections): Initialize new
        fields.
        (Output_segment::add_output_section): Add do_sort parameter.
        Change all callers.

2009-11-03  Ian Lance Taylor  <iant@google.com>

        PR 10860
        * options.h (class General_options): Add --warn-common.
        * resolve.cc (Symbol_table::resolve): Handle --warn-common when
        merging two common symbols.
        (Symbol_table::should_override): Handle --warn-common when merging
        a common symbol with a defined symbol.  Use report_resolve_problem
        for multiple definitions.
        (Symbol_table::report_resolve_problem): New function.
        * symtab.h (class Symbol_table): Declare report_resolve_problem.

2009-11-03  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::Target_arm): Initialize stub_tables_ and
        stub_factory_.
        (Target_arm::stub_factory): New method definition.
        (Target_arm::new_arm_input_section,
        Target_arm::find_arm_input_section, Target_arm::new_stub_table,
        Target_arm::reloc_uses_thumb_bit): New method declarations.
        (Target_arm::Stub_table_list, Target_arm::Arm_input_section_map): 
        New type definitions.
        (Target_arm::stub_tables_, Target_arm::stub_factory_): New data
        member declarations.
        (Target_arm::reloc_uses_thumb_bit, Target_arm::new_arm_input_section,
        Target_arm::find_arm_input_section, Target_arm::new_stub_table):
        New method definitions.

2009-11-03  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Add --warn_constructors.

2009-11-03  Ian Lance Taylor  <iant@google.com>

        PR 10893
        * defstd.cc (in_section): Add entries for __rel_iplt_start,
        __rel_iplt_end, __rela_iplt_start, __rela_iplt_end, and __stack.

2009-11-03  Ian Lance Taylor  <iant@google.com>

        PR 10895
        * po/Make-in ($(srcdir)/$(PACKAGE).pot): Pass -C and
        --msgid-bugs-address.
        (install-pdf): New target.
        (install-data_yes): Look up one directory to find mkinstalldirs.

2009-11-03  H.J. Lu  <hongjiu.lu@intel.com>

        * po/Make-in (.po.gmo): Don't generate .gmo files in source
        tree.

2009-10-30  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Stub_addend_reader): Fix bug in previouls check-in.

2009-10-30  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Stub_addend_reader): New struct template definition
        and partial specializations.
        (Stub_addend_reader::operator()): New method definition for a
        partially specialized template.

2009-10-30  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj::processor_specific_flags): New method
        definition.
        (Arm_relobj::do_read_symbols): New method declaration.
        (Arm_relobj::processor_specific_flags_): New data member declaration.
        (Arm_dynobj): New class definition.
        (Target_arm::do_finalize_sections): Add input_objects parameter.
        (Target_arm::do_adjust_elf_header): New method declaration.
        (Target_arm::are_eabi_versions_compatible,
        (Target_arm::merge_processor_specific_flags): New method declaration.
        (Target_arm::do_make_elf_object): New overloaded method definitions
        and declaration.
        (Arm_relobj::do_read_symbols): New method definition.
        (Arm_dynobj::do_read_symbols): Ditto.
        (Target_arm::do_finalize_sections): Add input_objects parameters.
        Merge processor-specific flags from all input objects.
        (Target_arm::are_eabi_versions_compatible,
        Target_arm::merge_processor_specific_flags,
        Target_arm::do_adjust_elf_header, Target_arm::do_make_elf_object):
        New method definitions.
        * i386.cc (Target_i386::do_finalize_sections): Add unnamed
        Input_objects pointer type parameter.
        * layout.cc (Layout::finalize): Pass input objects to target's.
        finalize_sections function.
        * output.cc (Output_file_header::do_sized_write): Set ELF file
        header's processor-specific flags.
        * powerpc.cc (Target_powerpc::do_finalize_sections): Add unnamed
        Input_objects pointer type parameter.
        * sparc.cc (Target_sparc::do_finalize_sections): Same.
        * target.h (Input_objects): New forward class declaration.
        (Target::processor_specific_flags,
        Target::are_processor_specific_flags_sect): New method definitions.
        (Target::finalize_sections): Add input_objects parameter.
        (Target::Target): Initialize processor_specific_flags_ and
        are_processor_specific_flags_set_.
        (Target::do_finalize_sections): Add unnamed Input_objects pointer type
        parameter.
        (Target::set_processor_specific_flags): New method definition.
        (Target::processor_specific_flags_,
        Target::are_processor_specific_flags_set_): New data member
        declarations.
        * x86_64.cc (Target_x86_64::do_finalize_sections): Add unnamed
        Input_objects pointer type parameter.

2009-10-30  Doug Kwan  <dougkwan@google.com>

        * arm.cc: Use Arm_address instead of elfcpp::Elf_types<32>::Elf_Addr.

2009-10-28  Ian Lance Taylor  <iant@google.com>

        * object.h (class Relobj): Drop options parameter from
        gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
        do_scan_relocs, do_relocate.  Change all callers.
        (class Sized_relobj): Drop options parameters from
        do_gc_process_relocs, do_scan_relocs, do_relocate,
        do_relocate_sections, relocate_sections, emit_relocs_scan,
        emit_relocs_scan_reltype.  Change all callers.
        (struct Relocate_info): Remove options field and all references to
        it.
        * reloc.h (class Read_relocs): Remove options constructor
        parameter and options_ field.  Change all callers.
        (class Gc_process_relocs, class Scan_relocs): Likewise.
        (class Relocate_task): Likewise.
        * target-reloc.h (scan_relocs): Remove options parameter.  Change
        all callers.
        (scan_relocatable_relocs): Likewise.
        * target.h (class Sized_target): Remove options parameter from
        gc_process_relocs, scan_relocs, scan_relocatable_relocs.  Change
        all callers.
        * gc.h (gc_process_relocs): Remove options parameter.  Change all
        callers.
        * arm.cc: Update functions to remove options parameters.
        * i386.cc: Likewise.
        * powerpc.cc: Likewise.
        * sparc.cc: Likewise.
        * x86_64.cc: Likewise.
        * testsuite/testfile.cc: Likewise.

2009-10-28  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_relobj): New class definition.
        (Arm_relobj::scan_sections_for_stubs, 
        Arm_relobj::do_count_local_symbols, Arm_relobj::do_relocate_sections):
        New method definitions.

2009-10-28  Cary Coutant  <ccoutant@google.com>

        * plugin.h (Plugin::Plugin): Initialize cleanup_done_.
        (Plugin::cleanup_done_): New member.
        (Plugin_manager::Plugin_manager): Remove cleanup_done_.
        (Plugin_manager::cleanup_done_): Remove.
        (Plugin_manager::add_input_file): Edit error message.
        * plugin.cc (Plugin::cleanup): Test and set cleanup_done_.
        (Plugin_manager::cleanup): Remove use of cleanup_done_.

2009-10-27  Mikolaj Zalewski  <mikolajz@google.com>

        * fileread.cc: (File_read::View::~View): Use the new
        data_ownership_ filed.
        (File_read::~File_read): Dispose the new whole_file_view_.
        (File_read::open): Mmap the whole file if needed.
        (File_read::open): Use whole_file_view_ instead of contents_.
        (File_read::find_view): Use whole_file_view_ if applicable.
        (File_read::do_read): Use whole_file_view_ instead of contents_.
        (File_read::make_view): Use whole_file_view_ instead of contents_,
        update File_read::View::View call.
        (File_read::find_or_make_view): Update File_read::View::View
        call.
        * fileread.h: (File_read::File_read): Initialize whole_file_view_,
        remove contents_
        (File_read::View::Data_ownership): New enum.
        (File_read::View::View): Replace bool mapped_ with Data_ownership
        argument.
        (File_read::View::mapped_): Remove (replaced by data_ownership_).
        (File_read::View::data_ownership_): New field.
        (File_read::contents_): Remove (replaced by whole_file_view_).
        (File_read::whole_file_view_): New field.
        * options.h (class General_options): Add --keep-files-mapped.

2009-10-27  Cary Coutant  <ccoutant@google.com>

        * symtab.cc (add_from_pluginobj): Pass correct value for is_ordinary.
        * testsuite/Makefile.am (plugin_test_5): New test case.
        * testsuite/Makefile.in: Regenerate.

2009-10-25  Doug Kwan  <dougkwan@google.com>

        * object.h (Sized_relobj::View_size, Sized_relobj::Views): Change
        from private to protected to allow access by child class.
        (Sized_relobj::do_relocate_sections): New method declaration.
        (Sized_relobj::relocate_sections): Virtualize.
        * reloc.cc (Sized_relobj::do_relocate_sections): Rename from 
        Sized_relobj::relocate_sections.  Instantiate template explicitly
        for different target sizes and endianity.

2009-10-24  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_output_section, Arm_relobj): Forward class declarations.
        (Arm_input_section::as_arm_input_section): New method.
        (Arm_output_section): New class definition.
        (Arm_output_section::create_stub_group,
        Arm_output_section::group_sections): New method definitions.

2009-10-22  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Arm_input_section): New class definition.
        (Arm_input_section::init, Arm_input_section:do_write,
        Arm_input_section::set_final_data_size,
        Arm_input_section::do_reset_address_and_file_offset): New method
        definitions.

2009-10-21  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Stub_table, Arm_input_section): New forward class
        declarations.
        (Stub_table): New class defintion.
        (Stub_table::add_reloc_stub, Stub_table::relocate_stubs
        Stub_table::do_reset_address_and_file_offset, Stub_table::do_write):
        New method definition.

2009-10-21  Doug Kwan  <dougkwan@google.com>

        * arm.cc: Update copyright comments.
        (Target_arm): New forward class template declaration.
        (Arm_address): New type.
        (ARM_MAX_FWD_BRANCH_OFFSET, ARM_MAX_BWD_BRANCH_OFFSET,
        THM_MAX_FWD_BRANCH_OFFSET, THM_MAX_BWD_BRANCH_OFFSET,
        THM2_MAX_FWD_BRANCH_OFFSET, THM2_MAX_BWD_BRANCH_OFFSET): New
        constants.
        (Insn_template): Same.
        (DEF_STUBS): New macro.
        (Stub_type): New enum type.
        (Stub_template): New class definition.
        (Stub): Same.
        (Reloc_stub): Same.
        (Stub_factory): Same.
        (Target_arm::Target_arm): Initialize may_use_blx_ and
        should_force_pic_veneer_.
        (Target_arm::may_use_blx, Target_arm::set_may_use_blx,
        Target_arm::should_force_pic_veneer,
        Target_arm::set_should_force_pic_veneer, Target_arm::using_thumb2,
        Target_arm::using_thumb_only, Target_arm:;default_target): New
        method defintions.
        (Target_arm::may_use_blx_, Target_arm::should_force_pic_veneer_):
        New data member declarations.
        (Insn_template::size, Insn_template::alignment): New method defintions.
        (Stub_template::Stub_template): New method definition.
        (Reloc_stub::Key::name, Reloc_stub::stub_type_for_reloc,
        Reloc_stub::do_fixed_endian_write, Reloc_stub::do_write): Same.
        (Stub_factory::Stub_factory): New method definition.
        * gold.h (string_hash): New template.
        * output.h (Input_section_specifier::hash_value): Use
        gold::string_hash.
        (Input_section_specifier::string_hash): Remove.
        * stringpool.cc (Stringpool_template::string_hash): Use
        gold::string_hash.

2009-10-20  Doug Kwan  <dougkwan@google.com>

        * object.cc (Sized_relobj::do_finalize_local_symbols): Handle section
        symbols of relaxed input sections.
        * output.h (Output_section::find_relaxed_input_section): Make
        method public.

2009-10-16  Doug Kwan  <dougkwan@google.com>

        * dynobj.cc (Versions::Versions): Initialize version_script_.
        Only insert base version symbol definition for a shared object
        if version script defines any version versions.
        (Versions::define_base_version): New method definition.
        (Versions::add_def): Check that base version is not needed.
        (Versions::add_need): Define base version lazily.
        * dynobj.h (Versions::define_base_version): New method declaration.
        (Versions::needs_base_version_): New data member declaration.
        * testsuite/Makefile.am (check_SCRIPTS): Add no_version_test.sh
        (check_DATA): Add no_version_test.stdout.
        (libno_version_test.so, no_version_test.o no_version_test.stdout):
        New make rules.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/no_version_test.c: New file.
        * testsuite/no_version_test.sh: Ditto.

2009-10-16  Doug Kwan  <dougkwan@google.com>

        * expression.cc (class Segment_start_expression): New class definition.
        (Segment_start_expression::value): New method definition.
        (script_exp_function_segment_start): Return a new
        Segment_start_expression.
        * gold/script-c.h (script_saw_segment_start_expression): New function
        prototype.
        * script-sections.cc (Script_sections::Script_sections): Initialize
        SAW_SEGMENT_START_EXPRESSION_ to false.
        (Script_sections::set_section_addresses): Use -Ttext, -Tdata
        and -Tbbs options to specify section addresses if given in
        command line and no SEGMENT_START expression is seen in a script.
        * script-sections.h (Script_sections::saw_segment_start_expression,
        Script_sections::set_saw_segment_start_expression): New method
        definition.
        (Script_sections::saw_segment_start_expression_): New data member
        declaration.
        * script.cc (script_saw_segment_start_expression): New function.
        * yyscript.y (SEGMENT_START): Call script_saw_segment_start_expression.
        * testsuite/Makefile.am (check_SCRIPTS): Add script_test_6.sh,
        script_test_7.sh and script_test_8.sh.
        (check_DATA): Add script_test_6.stdout, script_test_7.stdout and
        script_test_8.stdout.
        (MOSTLYCLEANFILES): Add script_test_6, script_test_7 and script_test_8.
        (script_test_6, script_test_6.stdout, script_test_7,
        script_test_7.stdout, script_test_8, script_test_8.stdout): New rules.
        * Makefile.in: Regenerate.
        * testsuite/script_test_6.sh: New file.
        * testsuite/script_test_6.t: Same.
        * testsuite/script_test_7.sh: Same.
        * testsuite/script_test_7.t: Same.
        * testsuite/script_test_8.sh: Same.

2009-10-16  Doug Kwan  <dougkwan@google.com>

        * output.cc (Output_segment::set_section_list_address): Cast
        expressions to unsigned long long type to avoid format warnings.

2009-10-15  Ian Lance Taylor  <iant@google.com>

        * script.cc (Script_options::add_symbol_assignment): Always add a
        dot assignment to script_sections_.
        * script-sections.cc (Script_sections::add_dot_assignment):
        Initialize if necessary.

        * layout.cc (Layout::relaxation_loop_body): Don't crash if we see
        program headers with no load segment if there is a linker script.

        * layout.cc (Layout::set_segment_offsets): Align the file offset
        to the segment aligment for -N or -n with no load segment.
        * output.cc (Output_segment::add_output_section): Don't crash if
        the first section is a TLS section.
        (Output_segment::set_section_list_addresses): Print an error
        message if the address moves backward in a linker script.
        * script-sections.cc
        (Output_section_element_input::set_section_addresses): Don't
        increase *dot_value for a SHF_TLS/SHT_NOBITS section.
        (Orphan_output_section::set_section_addresses): Likewise.

2009-10-15  Doug Kwan  <dougkwan@google.com>

        * layout.cc (Layout::finish_dynamic_section): Generate tags
        DT_FINI_ARRAY, DT_FINI_ARRAYSZ, DT_INIT_ARRAY, DT_INIT_ARRAYSZ,
        DT_PREINIT_ARRAY, DT_PREINIT_ARRAYSZ as needed. If -Bsymbolic is
        used, add DT_SYMBOLIC and set DF_SYMBOLIC in DT_FLAGS.

2009-10-14  Ian Lance Taylor  <iant@google.com>

        * object.h (class Relocate_info): Add reloc_shdr and data_shdr
        fields.
        * object.cc (Sized_relobj::relocate_sections): Set reloc_shdr and
        data_shdr fields of relinfo.
        * i386.cc (class Target_i386::Relocate): Remove ldo_addrs_ field.
        (Target_i386::Relocate::relocate_tls): Don't call fix_up_ldo.  For
        R_386_TLS_LDO_32, adjust based on section flags.
        (Target_i386::Relocate::fix_up_ldo): Remove.

2009-10-13  Ian Lance Taylor  <iant@google.com>

        Add support for -pie.
        * options.h (class General_options): Add -pie and
        --pic-executable.
        (General_options::output_is_position_independent): Test -pie.
        (General_options::output_is_executable): Return true if not shared
        and not relocatable.
        (General_options::output_is_pie): Remove.
        * options.cc (General_options::finalize): Reject incompatible uses
        of -pie.
        * gold.cc (queue_middle_tasks): A -pie link is not static.
        * symtab.h (Symbol::needs_plt_entry): Return false if -pie.
        * symtab.cc (Symbol::final_value_is_known): Return false if
        output_is_position_independent.
        * layout.cc (Layout::set_segment_offsets): Start at address 0 if
        output_is_position_independent.
        * output.cc (Output_file_header::do_sized_write): Use ET_DYN if
        output_is_position_independent.
        * i386.cc (Output_data_plt_i386::do_write): Use the PIC PLT if
        output_is_position_independent.
        * testsuite/Makefile.am (check_PROGRAMS): Add basic_pie_test and
        two_file_pie_test.
        (basic_pie_test.o, basic_pie_test): New targets.
        (two_file_test_1_pie.o, two_file_test_1b_pie.o): New targets.
        (two_file_test_2_pie.o, two_file_test_main_pie.o): New targets.
        (two_file_pie_test): New target.
        * testsuite/Makefile.in: Rebuild.
        * README: Remove note saying that -pie is not supported.

2009-10-13  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * options.h (class General_options): Add -init and -fini.
        * layout.cc (Layout::finish_dynamic_section): Emit
        given init and fini functions.

2009-10-13  Sriraman Tallam  <tmsriram@google.com>

        * gc.h (gc_process_relocs): Check if icf is enabled using new
        function.
        * gold.cc (queue_initial_tasks): Likewise.
        (queue_middle_tasks): Likewise.
        * object.cc (do_layout): Likewise.
        * symtab.cc (is_section_folded): Likewise.
        * main.cc (main): Likewise.
        * reloc.cc (Read_relocs::run): Likewise.
        (Sized_relobj::do_scan_relocs): Likewise.
        * icf.cc (is_function_ctor_or_dtor): New function.
        (Icf::find_identical_sections): Check if function is ctor or dtor when
        safe icf is chosen.
        * options.h (General_options::icf): Change option to be an enum.
        (Icf_status): New enum.
        (icf_enabled): New method.
        (icf_safe_folding): New method.
        (set_icf_status): New method.
        (icf_status_): New variable.
        * (options.cc) (General_options::finalize): Set icf_status_.
        * testsuite/Makefile.am: Add commands to build icf_safe_test. Modify
        icf_test and icf_keep_unique_test to use the --icf enum flag.
        * testsuite/icf_safe_test.sh: New file.
        * testsuite/icf_safe_test.cc: New file. 

2009-10-12  Sriraman Tallam  <tmsriram@google.com>

        * symtab.h: Check for GOLD_SYMTAB_H before header includes. Remove
        includes to gc.h and icf.h.
        * arm.cc: Include gc.h.
        * gold.cc: Likewise.
        * i386.cc: Likewise.
        * powerpc.cc: Likewise.
        * sparc.cc: Likewise.
        * x86_64.cc: Likewise.
        * gc.h: Include icf.h.

2009-10-11  Ian Lance Taylor  <iant@google.com>

        * plugin.cc: Include "gold.h" before other header files.

2009-10-10  Chris Demetriou  <cgd@google.com>

        * options.h (Input_file_argument::Input_file_type): New enum.
        (Input_file_argument::is_lib_): Replace with...
        (Input_file_argument::type_): New member.
        (Input_file_argument::Input_file_argument): Take Input_file_type
        'type' rather than boolean 'is_lib' as second argument.
        (Input_file_argument::is_lib): Use type_.
        (Input_file_argument::is_searched_file): New function.
        (Input_file_argument::may_need_search): Handle is_searched_file.
        * options.cc (General_options::parse_library): Support -l:filename.
        (General_options::parse_just_symbols): Update for Input_file_argument
        changes.
        (Command_line::process): Likewise.
        * archive.cc (Archive::get_file_and_offset): Likewise.
        * plugin.cc (Plugin_manager::release_input_file): Likewise.
        * script.cc (read_script_file, script_add_file): Likewise.
        * fileread.cc (Input_file::Input_file): Likewise.
        (Input_file::will_search_for): Handle is_searched_file.
        (Input_file::open): Likewise.
        * readsyms.cc (Read_symbols::get_name): Likewise.
        * testsuite/Makefile.am (searched_file_test): New test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/searched_file_test.cc: New file.
        * testsuite/searched_file_test_lib.cc: New file.

2009-10-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>
            Ian Lance Taylor  <iant@google.com>

        * descriptor.cc: Include <cstdio> and "binary-io.h".
        (Descriptors::open): Open the files in binary mode always.
        * script.cc (Lex::get_token): Treat \r as whitespace.

2009-10-09  Ian Lance Taylor  <iant@google.com>

        * testsuite/retain_symbols_file_test.sh: Don't test for __tcf_0.

2009-10-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>
            Ian Lance Taylor  <iant@google.com>

        * configure.ac: Check for readv function also.
        * fileread.cc (readv): Define if not HAVE_READV.
        * fileread.h (File_read:: max_readv_entries): Set to 1 if readv
        does not exist.
        * config.in: Regenerate.
        * configure: Regenerate.

2009-10-09  Doug Kwan  <dougkwan@google.com>

        * layout.cc (Layout::make_output_section): Call target hook to make
        ordinary output section.
        (Layout::finalize): Adjust parameter list of call the
        Target::may_relax().
        * layout.h (class Layout::section_list): New method.
        * merge.h (Output_merge_base::entsize): Change visibility to public.
        (Output_merge_base::is_string, Output_merge_base::do_is_string):
        New methods.
        (Output_merge_string::do_is_string): New method.
        * object.cc (Sized_relobj::do_setup): renamed from
        Sized_relobj::set_up.
        * object.h (Sized_relobj::adjust_shndx,
        Sized_relobj::initializ_input_to_output_maps,
        Sized_relobj::free_input_to_output_maps): Change visibilities to
        protected.
        (Sized_relobj::setup): Virtualize.
        (Sized_relobj::do_setup): New method declaration.
        (Sized_relobj::invalidate_section_offset,
        Sized_relobj::do_invalidate_section_offset): New method decfinitions.
        (Sized_relobj::elf_file, Sized_relobj::local_values): New methods.
        * options.cc (parse_int): New function.
        * options.h (parse_int): New declaration.
        (DEFINE_int): New macro.
        (stub_group_size): New option.
        * output.cc (Output_section::Output_section): Initialize memebers
        merge_section_map_, merge_section_by_properties_map_,
        relaxed_input_section_map_, is_relaxed_input_section_map_valid_.
        (Output_section::add_input_section): Handled deferred code-fill
        generation and remove an old comment.
        (Output_section::add_relaxed_input_section): New method definition.
        (Output_section::add_merge_input_section): Use merge section by
        properties map to speed to search.  Update merge section maps
        as appropriate.
        (Output_section::build_relaxation_map): New method definition.
        (Output_section::convert_input_sections_in_list_to_relaxed_sections):
        Same.
        (Output_section::relax_input_section): Renamed to
        Output_section::convert_input_sections_to_relaxed_sections and change
        interface to take a vector of pointers to relaxed sections.
        (Output_section::find_merge_section,
        Output_section::find_relaxed_input_section): New method definitions.
        (Output_section::is_input_address_mapped,
        Output_section::output_offset, Output_section::output_address):
        Use output section data maps to speed up searching.
        (Output_section::find_starting_output_address): Add comments.
        (Output_section::do_write,
        Output_section::write_to_postprocessing_buffer): Do code-fill
        generation as appropriate.
        (Output_section::get_input_sections): Invalidate relaxed input section
        map.
        (Output_section::restore_states): Adjust type of checkpoint .
        Invalidate relaxed input section map.
        * output.h (Output_merge_base): New class declaration.
        (Input_section_specifier): New class defintion.
        (class Output_relaxed_input_section) Change base class to
        Output_section_data_build.
        (Output_relaxed_input_section::Output_relaxed_input_section): Adjust
        base class initializer.
        (Output_section::add_relaxed_input_section): New method declaration.
        (Output_section::Input_section): Change visibility to protected.
        (Output_section::Input_section::relobj,
        Output_section::Input_section::shndx): Handle relaxed input sections.
        Output_section::input_sections) Change visibility to protected.  Also
        define overload to return a non-const pointer.
        (Output_section::Merge_section_properties): New class defintion.
        (Output_section::Merge_section_by_properties_map,
        Output_section::Output_section_data_by_input_section_map,
        Output_section::Relaxation_map): New types.
        (Output_section::relax_input_section): Rename method to
        Output_section::convert_input_sections_to_relaxed_sections and change
        interface to take a vector of relaxed section pointers.
        (Output_section::find_merge_section,
        Output_section::find_relaxed_input_section,
        Output_section::build_relaxation_map,
        Output_section::convert_input_sections_in_list_to_relaxed_sections):
        New method declarations.
        (Output_section::merge_section_map_
        Output_section::merge_section_by_properties_map_,
        Output_section::relaxed_input_section_map_,
        Output_section::is_relaxed_input_section_map_valid_,
        Output_section::generate_code_fills_at_write_): New data members.
        * script-sections.cc
        (Output_section_element_input::set_section_addresses): Call
        current_data_size and addralign methods of relaxed input sections.
        (Orphan_output_section::set_section_addresses): Call current_data_size
        and addralign methods of relaxed input sections.
        * symtab.cc (Symbol_table::compute_final_value): Extract template
        from the body of Symbol_table::sized_finalize_symbol.
        (Symbol_table::sized_finalized_symbol): Call
        Symbol_table::compute_final_value.
        * symtab.h (Symbol_table::Compute_final_value_status): New enum type.
        (Symbol_table::compute_final_value): New templated method declaration.
        * target.cc (Target::do_make_output_section): New method defintion.
        * target.h (Target::make_output_section): New method declaration.
        (Target::relax): Add more parameters for input objects, symbol table
        and layout.  Adjust call to do_relax.
        (Target::do_make_output_section): New method declaration.
        (Target::do_relax): Add parameters for input objects, symbol table
        and layout.

2009-10-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * pread.c: Include stdio.h.

2009-10-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * plugin.cc: Don't include dlfcn.h when ENABLE_PLUGINS is not
        defined.

2009-10-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        * dwarf_reader.cc (Sized_dwarf_line_info::Sized_dwarf_line_info):
        Change read_shndx type to unsigned int.
        (Sized_dwarf_line_info::read_lines): Change shndx type to unsigned
        int.
        (Sized_dwarf_line_info::read_line_mappings): Likewise.
        * dwarf_reader.h (Sized_dwarf_line_info::Sized_dwarf_line_info):
        Change read_shndx type to unsigned int.
        (Sized_dwarf_line_info::read_lines): Change shndx type to unsigned
        int.
        (Sized_dwarf_line_info::read_line_mappings): Likewise.
        * layout.cc (Layout::create_symtab_sections): Cast the result of
        local_symcount * symsize to off_t in the gold_assert.

2009-10-09  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (Target_arm::relocate::reloc_is_non_pic): Return true for
        R_ARM_THM_ABS5, R_ARM_ABS8, R_ARM_ABS12, R_ARM_ABS16,
        R_ARM_BASE_ABS.
        (Arm_relocate_functions::abs8): Remove has_thumb_bit parameter.
        (Arm_relocate_functions::thm_abs5): New function.
        (Arm_relocate_functions::abs12): New function.
        (Arm_relocate_functions::abs16): New function.
        (Arm_relocate_functions::base_abs): New function.
        (Scan::check_non_pic): Handle R_ARM_ABS32_NOI.
        (Scan::local): Remove special handling of R_ARM_ABS8.  Handle
        R_ARM_ABS32_NOI, R_ARM_THM_ABS5, R_ARM_ABS12, R_ARM_ABS16, and
        R_ARM_BASE_ABS.
        (Scan::global): Likewise.
        (Relocate::relocate): Handle R_ARM_ABS12, R_ARM_ABS16,
        R_ARM_ABS32_NOI, R_ARM_THM_ABS5, and R_ARM_BASE_ABS.
        (Relocatable_size_for_reloc::get_size_for_reloc): Handle
        R_ARM_ABS16, R_ARM_THM_ABS5, R_ARM_ABS32_NOI, R_ARM_ABS12, and
        R_ARM_BASE_ABS.

2009-10-09  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (Arm_relocate_functions::movw_prel_nc): New function.
        (Arm_relocate_functions::movt_prel): New function.
        (Arm_relocate_functions::thm_movw_prel_nc): New function.
        (Arm_relocate_functions::thm_movt_prel): New function.
        (Scan::local): Handle R_ARM_MOVW_PREL_NC, R_ARM_MOVT_PREL,
        R_ARM_THM_MOVW_PREL_NC, and R_ARM_THM_MOVT_PREL.
        (Scan::global, Relocate::relocate): Likewise.
        (Relocatable_size_for_reloc::get_size_for_reloc): Likewise.

2009-10-09  Mikolaj Zalewski  <mikolajz@google.com>

        * gold.cc: (queue_initial_tasks): Pass incremental_inputs to
        Incremental_checker.
        * incremental.cc: (INCREMENTAL_LINK_VERSION): Change type to
        unsigned int.
        (class Incremental_inputs_header): New class.
        (Incremental_inputs_header_writer): Edit comment.
        (Incremental_inputs_entry): New class.
        (Incremental_inputs_entry_writer): Edit comment.
        (Sized_incremental_binary::do_find_incremental_inputs_section):
        Add *strtab_shndx parameter, fill it.
        (Sized_incremental_binary::do_check_inputs): New method.
        (Incremental_checker::can_incrementally_link_output_file): Use
        Sized_incremental_binary::check_inputs.
        (Incremental_inputs::report_command_line): Save command line in
        command_line_.
        * incremental.h:
        (Incremental_binary::find_incremental_inputs_section): New
        method.
        (Incremental_binary::do_find_incremental_inputs_section): Add
        strtab_shndx parameter.
        (Incremental_binary::do_check_inputs): New pure virtual method.
        (Sized_incremental_binary::do_check_inputs): Declare.
        (Incremental_checker::Incremental_checker): Add incremental_inputs
        parameter, use it to initialize incremental_inputs_.
        (Incremental_checker::incremental_inputs_): New field.
        (Incremental_checker::command_line): New method.
        (Incremental_checker::inputs): New method.
        (Incremental_checker::command_line_): New field.

2009-10-09  Mikolaj Zalewski  <mikolajz@google.com>

        * incremental.cc: Include <cstdarg> and "target-select.h".
        (vexplain_no_incremental): New function.
        (explain_no_incremental): New function.
        (Incremental_binary::error): New method.
        (Sized_incremental_binary::do_find_incremental_inputs_section): New
        method.
        (make_sized_incremental_binary): New function.
        (open_incremental_binary): New function.
        (can_incrementally_link_file): Add checks if output is ELF and has
        inputs section.
        * incremental.h: Include "elfcpp_file.h" and "output.h".
        (Incremental_binary): New class.
        (Sized_incremental_binary): New class.
        (open_incremental_binary): Declare.
        * object.cc (is_elf_object): Use
        elfcpp::Elf_recognizer::is_elf_file.
        (make_elf_object): Use elfcpp::Elf_recognizer::is_valid_header.
        * output.h (Output_file::filesize): New method.

2009-10-07  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (Arm_relocate_functions::extract_arm_movw_movt_addend):
        New function.
        (Arm_relocate_functions::insert_val_arm_movw_movt): New function.
        (Arm_relocate_functions::extract_thumb_movw_movt_addend): New
        function.
        (Arm_relocate_functions::insert_val_thumb_movw_movt): New
        function.
        (Arm_relocate_functions::movw_abs_nc): New function.
        (Arm_relocate_functions::movt_abs): New function.
        (Arm_relocate_functions::thm_movw_abs_nc): New function.
        (Arm_relocate_functions::thm_movt_abs): New function.
        (Scan::local): Handle R_ARM_MOVW_ABS_NC, R_ARM_MOVT_ABS,
        R_ARM_THM_MOVW_ABS_NC, R_ARM_THM_MOVT_ABS.
        (Scan::global): Likewise.
        (Relocate::relocate): Likewise.
        (Relocatable_size_for_reloc::get_size_for_reloc): Likewise.

2009-10-07  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (Arm_relocate_functions::got_prel) New function.
        (Scan::local, Scan::global): Handle R_ARM_GOT_PREL.
        (Relocate::relocate): Likewise.
        (Relocatable_size_for_reloc::get_size_for_reloc): Likewise.

2009-10-06  Ian Lance Taylor  <iant@google.com>

        * options.h (class General_options): Define
        split_stack_adjust_size parameter.
        * object.h (class Object): Add uses_split_stack_ and
        has_no_split_stack_ fields.  Add uses_split_stack and
        has_no_split_stack accessor functions.  Declare
        handle_split_stack_section.
        (class Reloc_symbol_changes): Define.
        (class Sized_relobj): Define Function_offsets.  Declare
        split_stack_adjust, split_stack_adjust_reltype, and
        find_functions.
        * object.cc (Object::handle_split_stack_section): New function.
        (Sized_relobj::do_layout): Call handle_split_stack_section.
        * dynobj.cc (Sized_dynobj::do_layout): Call
        handle_split_stack_section.
        * reloc.cc (Sized_relobj::relocate_sections): Call
        split_stack_adjust for executable sections in split_stack
        objects.  Pass reloc_map to relocate_section.
        (Sized_relobj::split_stack_adjust): New function.
        (Sized_relobj::split_stack_adjust_reltype): New function.
        (Sized_relobj::find_functions): New function.
        * target-reloc.h: Include "object.h".
        (relocate_section): Add reloc_symbol_changes parameter.  Change
        all callers.
        * target.h (class Target): Add calls_non_split method.  Declare
        do_calls_non_split virtual method.  Declare match_view and
        set_view_to_nop.
        * target.cc: Include "elfcpp.h".
        (Target::do_calls_non_split): New function.
        (Target::match_view): New function.
        (Target::set_view_to_nop): New function.
        * gold.cc (queue_middle_tasks): Give an error if mixing
        split-stack and non-split-stack objects with -r.
        * i386.cc (Target_i386::relocate_section): Add
        reloc_symbol_changes parameter.
        (Target_i386::do_calls_non_split): New function.
        * x86_64.cc (Target_x86_64::relocate_section): Add
        reloc_symbol_changes parameter.
        (Target_x86_64::do_calls_non_split): New function.
        * arm.cc (Target_arm::relocate_section): Add reloc_symbol_changes
        parameter.
        * powerpc.cc (Target_powerpc::relocate_section): Add
        reloc_symbol_changes parameter.
        * sparc.cc (Target_sparc::relocate_section): Add
        reloc_symbol_changes parameter.
        * configure.ac: Call AM_CONDITIONAL for the default target.
        * configure: Rebuild.
        * testsuite/Makefile.am (TEST_AS): New variable.
        (check_SCRIPTS): Add split_i386.sh and split_x86_64.sh.
        (check_DATA): Add split_i386 and split_x86_64 files.
        (SPLIT_DEFSYMS): Define.
        (split_i386_[1234n].o): New targets.
        (split_i386_[124]): New targets.
        (split_i386_[1234r].stdout): New targets.
        (split_x86_64_[1234n].o): New targets.
        (split_x86_64_[124]): New targets.
        (split_x86_64_[1234r].stdout): New targets.
        (MOSTLYCLEANFILES): Add new executables.
        * testsuite/split_i386.sh: New file.
        * testsuite/split_x86_64.sh: New file.
        * testsuite/split_i386_1.s: New file.
        * testsuite/split_i386_2.s: New file.
        * testsuite/split_i386_3.s: New file.
        * testsuite/split_i386_4.s: New file.
        * testsuite/split_i386_n.s: New file.
        * testsuite/split_x86_64_1.s: New file.
        * testsuite/split_x86_64_2.s: New file.
        * testsuite/split_x86_64_3.s: New file.
        * testsuite/split_x86_64_4.s: New file.
        * testsuite/split_x86_64_n.s: New file.
        * testsuite/testfile.cc (Target_test): Update relocation_section
        function.
        * testsuite/Makefile.in: Rebuild.

2009-10-06  Ian Lance Taylor  <iant@google.com>

        * i386.cc (class Target_i386::Relocate): Add ldo_addrs_ field.
        (Target_i386::Relocate::relocate_tls): Call fix_up_ldo before
        changing local_dynamic_type_ from LOCAL_DYNAMIC_NONE.  When
        handling R_386_TLS_LDO_32, if local_dynamic_type_ is NONE, push
        the address on ldo_addrs_.
        (Target_i386::Relocate::fix_up_ldo): New function.

2009-10-06   Rafael Espindola  <espindola@google.com>

        * plugin.cc (add_input_library): New.
        (Plugin::load): Add add_input_library to tv.
        (Plugin_manager::add_input_file): Add the is_lib argument.
        (add_input_file): Update call to Plugin_manager::add_input_file.
        (add_input_library): New.
        * plugin.h (Plugin_manager::add_input_file): Add the is_lib argument.

2009-09-30  Doug Kwan  <dougkwan@google.com>

        * arm.cc (Target_arm::may_need_copy_reloc): Check for THUMB function
        symbol and call Symbol::may_need_copy_reloc to determine if
        a copy reloc is needed.
        * copy-relocs.cc (Copy_relocs::need_copy_reloc): Return false if -z
        nocopyreloc is given in command line.
        (Copy_relocs::emit_copy_reloc): Assert that -z nocopyreloc is not
        given in command line.
        * i386.cc (Target_i386::may_need_copy_reloc): Remove.
        (Target_i386::Scan::global): Use Symbol::may_need_copy_reloc instead
        of the removed Target_i386::may_need_copy_reloc.
        * options.h (copyreloc): New option with default value false.
        * powerpc.cc (Target_powerpc::may_need_copy_reloc): Remove.
        (Target_powerpc::Scan::global): Use Symbol::may_need_copy_reloc
        instead of the removed Target_powerpc::may_need_copy_reloc.
        * sparc.cc (Target_powerpc::may_need_copy_reloc): Remove.
        (Target_sparc::Scan::global): Use Symbol::may_need_copy_reloc
        instead of the removed Target_sparc::may_need_copy_reloc.
        * symtab.h (Symbol::may_need_copy_reloc): New method definition.
        * x86_64.cc (Target_powerpc::may_need_copy_reloc): Remove.
        (Target_x86_64::Scan::global): Use Symbol::may_need_copy_reloc
        instead of the removed Target_x86_64::may_need_copy_reloc.

2009-09-30  Ian Lance Taylor  <iant@google.com>

        * object.h (class Object): Remove target_ field, and target,
        sized_target, and set_target methods.
        (Object::sized_target): Remove.
        (class Sized_relobj): Update declarations.  Remove sized_target.
        * object.cc (Sized_relobj::setup): Remove target parameter.
        Change all callers.
        (Input_objects::add_object): Don't do anything with the target.
        (make_elf_sized_object): Add punconfigured parameter.  Change all
        callers.  Set or test parameter target.
        * dynobj.cc (Sized_dynobj::target): Remove target parameter.
        Change all callers.
        * parameters.cc (Parameters::set_target): Change parameter type to
        be non-const.
        (Parameters::default_target): Remove.
        (set_parameters_target): Change parameter type to be non-const.
        (parameters_force_valid_target): New function.
        (parameters_clear_target): New function.
        * parameters.h (class Parameters): Update declarations.  Remove
        default_target method.  Add sized_target and clear_target
        methods.  Change target_ to be non-const.
        (set_parameters_target): Update declaration.
        (parameters_force_valid_target): Declare.
        (parameters_clear_target): Declare.
        * readsyms.cc (Read_symbols::do_read_symbols): Pass punconfigured
        as NULL if we aren't searching.
        (Add_symbols::run): Don't check for compatible target.
        * fileread.cc (Input_file::open_binary): Call
        parameters_force_valid_target.
        * gold.cc (queue_middle_tasks): Likewise.
        * plugin.cc (make_sized_plugin_object): Likewise.  Don't call
        set_target on object.
        * dynobj.h (class Sized_dynobj): Update declarations.
        * archive.cc (Archive::get_elf_object_for_member): Return NULL if
        make_elf_object returns NULL.
        (Archive::include_member): Don't check whether object target is
        compatible.
        * output.cc (Output_section::add_input_section): Get target from
        parameters.
        (Output_section::relax_input_section): Likewise.
        * reloc.cc (Sized_relobj::do_gc_process_relocs): Get target from
        parameters.
        (Sized_relobj::do_scan_relocs): Likewise.
        (Sized_relobj::relocate_sections): Likewise.
        * resolve.cc (Symbol_table::resolve): Likewise.
        * symtab.cc (Symbol_table::wrap_symbol): Likewise.  Remove object
        parameter.  Change all callers.
        (Symbol_table::add_from_object): Get target from parameters.
        (Symbol_table::add_from_relobj): Don't check object target.
        (Symbol_table::add_from_dynobj): Likewise.
        (Symbol_table::define_special_symbol): Get target from
        parameters.
        * symtab.h (class Symbol_table): Update declaration.
        * testsuite/binary_unittest.cc (gold_testsuite): Remove target
        parameter.  Change all callers.  Clear parameter target.
        (Binary_test): Test target here.
        * testsuite/object_unittest.cc (gold_testsuite): Remove
        target_test_pointer parameter.  Change all callers.
        (Object_test): Test target here.

2009-09-26  Ian Lance Taylor  <iant@google.com>

        * testsuite/initpri1.c: Don't try to use constructor priorities if
        compiling with gcc before 4.3.

2009-09-22  Mikolaj Zalewski  <mikolajz@google.com>

        * testsuite/retain_symbols_file_test.sh (check_present): Change
        output file name to retain_symbols_file_test.stdout.
        (check_absent): Likewise.

2009-09-18  Craig Silverstein  <csilvers@google.com>

        * object.cc (Sized_relobj::do_count): Test should_retain_symbol map.
        * options.cc: Include <cerrno> and <fstream>.
        (General_options::finalize): Parse -retain-symbols-file tag.
        * options.h: New flag.
        (General_options): New method should_retain_symbol, new
        variable symbols_to_retain.
        * symtab.cc (Symbol_table::sized_finalize_symbol): Test
        should_retain_symbol map.
        * testsuite/Makefile.am (retain_symbols_file_test): New test.
        * testsuite/Makefile.in: Regenerate.
        * testsuite/retain_symbols_file_test.sh: New file.

2009-09-18  Nick Clifton  <nickc@redhat.com>

        * po/es.po: Updated Spanish translation.

2009-09-17  Doug Kwan  <dougkwan@google.com>

        * debug.h (DEBUG_RELAXATION): New constant.
        (DEBUG_ALL): Add DEBUG_RELAXATION.
        (debug_string_to_enum): Add relaxation debug option.
        * layout.cc
        (Layout::Relaxation_debug_check::check_output_data_for_reset_values,
        Layout::Relaxation_debug_check::read_sections,
        Layout::Relaxation_debug_check::read_sections): New method definitions.
        (Layout::Layout): Initialize data members
        record_output_section_data_from_scrips_,
        script_output_section_data_list_ and relaxation_debug_check_.
        (Layout::save_segments, Layout::restore_segments,
        Layout::clean_up_after_relaxation, Layout::prepare_for_relaxation,
        Layout::relaxation_loop_body): New method definitions.
        (Layout::finalize): Support relaxation.  Move section layout code to
        Layout::relaxation_loop_body.
        (Layout::set_asection_address_from_script): Move code for orphan
        section placement out.
        (Layout::place_orphan_sections_in_script): New method definition.
        * layout.h (Output_segment_headers, Output_file_header):
        New forward class declarations.
        (Layout::~Layout): Define.
        (Layout::new_output_section_data_from_script): New method definition.
        (Layout::place_orphan_sections_in_script): New method declaration.
        (Layout::Segment_states): New type declaration.
        (Layout::save_segments, Layout::restore_segments,
        Layout::clean_up_after_relaxation, Layout::prepare_for_relaxation,
        Layout::relaxation_loop_body): New method declarations.
        (Layout::Output_section_data_list): New type declaration.
        (Layout::Relaxation_debug_check): New class definition.
        (Layout::record_output_section_data_from_script_,
        Layout::script_output_section_data_list_, Layout::segment_states_,
        Layout::relaxation_debug_check_): New data members.
        * output.cc: (Output_section_headers::do_size): New method definition.
        (Output_section_headers::Output_section_headers): Move size
        computation to Output_section_headers::do_size.
        (Output_segment_headers::do_size): New method definition.
        (Output_file_header::Output_file_header): Move size computation to 
        Output_file_header::do_size and call it.
        (Output_file_header::do_size): New method definition.
        (Output_data_group::Output_data_group): Adjust call to
        Output_section_data.
        (Output_data_dynamic::set_final_data_size): Add DT_NULL tag only once.
        (Output_symtab_xindex::do_write): Add array bound check.
        (Output_section::Input_section::print_to_mapfile): Handle
        RELAXED_INPUT_SECTION_CODE.
        (Output_section::Output_section): Initialize data member checkpoint_.
        (Output_section::~Output_section): Delete checkpoint object pointed
        by checkpoint_.
        (Output_section::add_input_section): Always add an Input_section if
        relaxing.
        (Output_section::add_merge_input_section): Add assert.
        (Output_section::relax_input_section): New method definition.
        (Output_section::set_final_data_size): Set load address to zero for
        an unallocated section.
        (Output_section::do_address_and_file_offset_have_reset_values):
        New method definition.
        (Output_section::Input_section_sort_enty::Input_section_sort_enty):
        Handle relaxed input section.
        (Output_section::sort_attached_input_sections): Checkpoint input
        section list lazily.
        (Output_section::get_input_sections): Change type of input_sections to
        list of Simple_input_section pointers.  Checkpoint input section list
        lazily.  Also handle relaxed input sections.
        (Output_section::add_input_section_for_script): Take a reference to
        a Simple_input_section object instead of Relobj pointer and section
        index as parameter.  Handle relaxed input sections.
        (Output_section::save_states, Output_section::restore_states): New
        method definitions.
        * output.h (Output_data::Output_data): Initialize is_data_size_fixed_.
        (Output_data::is_data_size_fixed): New method definition.
        (Output_data::reset_addresss_and_file_offset): Do not reset data size
        if it is fixed.
        (Output_data::address_and_file_offset_have_reset_values): New method
        definition.
        (Output_data::do_address_and_file_offset_have_reset_values): New method
        definition.
        (Output_data::set_data_size): Check that data size is not fixed.
        (Output_data::fix_data_size): New method definition.
        (Output_data::is_data_size_fixed_): New data member.
        (Output_section_headers::set_final_data_size): New method definition.
        (Output_section_headers::do_size): New method declaration.
        (Output_segment_headers::set_final_data_size): New method definition.
        (Output_segment_headers::do_size): New method declaration.
        (Output_file_header::set_final_data_size)::New method definition.
        (Output_file_header::do_size)::New method declaration.
        (Output_section_data::Output_section_data): Add new parameter
        is_data_size_fixed and use it to fix data size.
        (Output_data_const::Output_data_const): Adjust call to base class
        constructor and fix data size.
        (Output_data_const_buffer::Output_data_const_buffer): Adjust call to
        base class constructor and fix data size.
        (Output_data_fixed_space::Output_data_fixed_space): Adjust call to
        base class constructor and fix data size.
        (Output_data_zero_fill::Output_data_zero_fill): Adjust call to base
        class constructor and fix data size.
        (Output_data_group::set_final_data_size): New method definition.
        (Output_data_dynamic::Dynamic_entry::tag): New method definition.
        (Output_symtab_xindex::Output_symtab_xindex): Adjust call to base
        class constructor and fix data size.
        (Output_relaxed_input_section): New class definition.
        (Output_section::Simple_input_section): New class definition.
        (Output_section::get_input_sections): Adjust parameter list.
        (Output_section::add_input_section_for_script): Same.
        (Output_section::save_states, Output_section::restore_states,
        Output_section::do_address_and_file_offset_have_reset_values,
        (Output_section::Input_section::Input_section): Handle
        RELAXED_INPUT_SECTION_CODE.  Add new overload for
        Output_relaxed_input_section.
        (Output_section::Input_section::is_input_section,
        Output_section::Input_section::set_output_section): Handle relaxed
        input section.
        (Output_section::Input_section::is_relaxed_input_section,
        Output_section::Input_section::output_section_data,
        Output_section::Input_section::relaxed_input_section): New method
        definitions.
        (Output_section::Input_section::RELAXED_INPUT_SECTION_CODE): New enum
        value.
        (Output_section::Input_section::u1_): Update comments.
        (Output_section::Input_section::u2_): Add new union member poris.
        (Output_section::Checkpoint_output_section): New classs definition.
        (Output_section::relax_input_section): New method declaration.
        (Output_section::checkpoint_): New data member.
        (Output_segment): Update comments.
        (Output_segment::Output_segment): Un-privatize copy constructor.
        (Output_segment::operator=): Un-privatize.
        * script-sections.cc (Output_section_element::Input_section_list):
        Change element type to Output_section::Simple_input_section.
        (Output_section_element_dot_assignment::set_section_addresses):
        Register output section data for relaxation clean up.
        (Output_data_exression::Output_data_expression): Adjust call to base
        constructor to fix data size.
        (Output_section_element_data::set_section_addresses): Register
        Output_data_expression object for relaxation clean up.
        (struct Input_section_info): Replace Relobj pointer and section index
        pair with Output_section::Simple_input_section and Convert struct to a
        class.
        (Input_section_sorter::operator()): Adjust access to
        Input_section_info data member to use accessors. 
        (Output_section_element_input::set_section_addresses): Use layout
        parameter.  Adjust code to use Output_section::Simple_input_section
        and Input_secction_info classes.  Register filler for relaxation
        clean up.
        (Orphan_output_section::set_section_addresses): Replace Relobj pointer
        and section index pair with Output_section::Simple_input_section
        class.  Adjust code accordingly.
        (Phdrs_element::release_segment): New method definition.
        (Script_sections::attach_sections_using_phdrs_clause): Do not modify
        segment list.
        (Script_sections::release_segments): New method definition.
        * gold/script-sections.h (Script_sections::release_segments): New
        method declaration.
        * gold/target.h (Target::may_relax, Target::relax,
        Target::do_may_relax, Target::do_relax): New method definitions.

2009-09-17  Viktor Kutuzov  <vkutuzov@accesssoftek.com>

        * arm.cc (has_signed_unsigned_overflow): New function.
        (Arm_relocate_functions::abs8): New function.
        (Target_arm::Scan::local): Handle R_ARM_ABS8.
        (Target_arm::Scan::global): Likewise.
        (Target_arm::relocate::relocate): Likewise.
        (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc):
        Likewise.

2009-09-16  Cary Coutant  <ccoutant@google.com>

        * testsuite/Makefile.am (MOSTLYCLEANFILES): Add more generated files.
        * testsuite/Makefile.in: Regenerate.

2009-09-11  Nick Clifton  <nickc@redhat.com>

        * po/gold.pot: Updated by the Translation project.

2009-09-08  Cary Coutant  <ccoutant@google.com>

        * output.cc (Output_file::open): Add execute permission to empty file.
        * testsuite/Makefile.am (permission_test): New test.
        * testsuite/Makefile.in: Regenerate.

2009-09-02  Ian Lance Taylor  <iant@google.com>

        * output.cc (Output_file::resize): Call map_no_anonymous rather
        than map.

2009-09-01  Mikolaj Zalewski  <mikolajz@google.com>

        * gold.cc: Include "incremental.h".
        (queue_initial_tasks): Call Incremental_checker methods.
        * incremental.cc: Include "output.h".
        (Incremental_checker::can_incrementally_link_output_file): New
        method.
        * incremental.h (Incremental_checker): New class.

        * output.cc (Output_file::open_for_modification): New method.
        (Output_file::map_anonymous): Changed return type to bool.  Record
        map in base_ field.
        (Output_file::map_no_anonymous): New method, broken out of map.
        (Output_file::map): Use map_no_anonymous and map_anonymous.
        * output.h (class Output_file): Update declarations.

2009-08-24  Cary Coutant  <ccoutant@google.com>

        * options.h (Command_line::Pre_options): New class.
        (Command_line::pre_options): New member.
        * options.cc (gold::options::ready_to_register): New variable.
        (One_option::register_option): Do nothing if not registering options.
        Assert if same short option registered twice.
        (General_options::General_options): Turn off option registration when
        done constructing.
        (Command_line::Pre_options::Pre_options): New constructor.

2009-08-24  Cary Coutant  <ccoutant@google.com>

        * options.h (General_options::no_keep_memory): Remove incorrect
        short option.

2009-08-24  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        * Makefile.am (am__skiplex, am__skipyacc): New.
        * Makefile.in: Regenerate.

2009-08-22  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

        * Makefile.am (AM_CPPFLAGS): Renamed from ...
        (INCLUDES): ... this.
        * testsuite/Makefile.am (AUTOMAKE_OPTIONS): Add -Wno-portability.
        (AM_CPPFLAGS): Renamed from ...
        (INCLUDE): ... this.
        * Makefile.in, testsuite/Makefile.in: Regenerate.

        * Makefile.in: Regenerate.
        * aclocal.m4: Likewise.
        * config.in: Likewise.
        * configure: Likewise.
        * testsuite/Makefile.in: Likewise.

        * Makefile.am (AUTOMAKE_OPTIONS): Add foreign.
        * testsuite/Makefile.am (AUTOMAKE_OPTIONS): Add foreign.
        * Makefile.in: Regenerate.
        * testsuite/Makefile.in: Regenerate.

2009-08-19  Cary Coutant  <ccoutant@google.com>

        * resolve.cc (Symbol_table::resolve): Don't complain about defined
        symbols in shared libraries overridden by hidden or internal symbols
        in the main program.

2009-08-19  Chris Demetriou  <cgd@google.com>

        * testsuite/debug_msg.sh: Match .* rather than ${srcdir} when
        checking source file names in error messages.

2009-08-18  Doug Kwan  <dougkwan@google.com>

        * dynobj.cc (Sized_dynobj::setup): Take a Target object instead of
        an elcpp::Ehdr as parameter.  Adjust call to set_target.
        * dynobj.h (Sized_dynobj::setup): Take a Target object instead of
        an elfcpp::Ehdr as parameter.
        * object.cc (Object::set_target): Remove the version that looks up
        a target and sets it.
        (Sized_relobj::setup): Take a Target object instead of
        an elfcpp::Ehdr as parameter.  Adjust call to set_target.
        (make_elf_sized_object): Find target and ask target to
        make an ELF object.
        * object.h: (Object::set_target): Remove the version that looks up
        a target and sets it.
        (Sized_relobj::setup): Take a Target object instead of
        an elfcpp:Ehdr as parameter.
        * target.cc: Include dynobj.h.
        (Target::do_make_elf_object_implementation): New.
        (Target::do_make_elf_object): New.
        * target.h (Target::make_elf_object): New template declaration.
        (Target::do_make_elf_object): New method declarations.
        (Target::do_make_elf_object_implementation): New template declaration.

2009-08-14  Ian Lance Taylor  <iant@google.com>

        * gold.h (FUNCTION_NAME): Define.
        (gold_unreachable): Use FUNCTION_NAME.

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

        * icf.cc (Icf::find_identical_sections): Issue a warning when a
        symbol in the --keep-unique list is not found.

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.