* arm.cc (Arm_exidx_cantunwind::do_print_to_mapfile): New method.
(Arm_relobj::do_relocate_sections): Add new parameter for output
file to match the parent.
(Target_arm::scan_reloc_section_for_stubs): Use would-be final values
of local symbols instead of input values. Update code to track
changes in gold::relocate_section.
* object.cc (Sized_relobj::compute_final_local_value): New methods.
(Sized_relobj::compute_final_local_value_internal): New methods.
(Sized_relobj::do_finalize_local_symbols): Move code from loop
body into private version of Sized_relobj::compute_final_local_value.
Call the inline method.
* object.h (Symbol_value::Symbol_value): Define destructor. Free
merged symbol value if there is one.
(Symbol_value::has_output_value): New method defintiion.
(Sized_relobj::Compute_final_local_value_status): New enum type.
(Sized_relobj::compute_final_local_value): New methods.
(Sized_relobj::compute_final_local_value_internal): New methods.
* Makefile.am (check_SCRIPTS): Add arm_branch_out_of_range.sh
and arm_cortex_a8.sh.
(thumb_bl_out_of_range_local, arm_cortex_a8_b_cond, arm_cortex_a8_bl,
arm_cortex_a8_blx, arm_cortex_a8_local, arm_corte_a8_local_reloc):
New tests.
* Makefile.in: Regenerate.
* testsuite/arm_bl_out_of_range.s: Update test.
* testsuite/thumb_bl_out_of_range.s: Ditto.
* testsuite/thumb_blx_out_of_range.s: Ditto.
* testsuite/arm_branch_out_of_range.sh: New file.
* testsuite/arm_cortex_a8.sh: Ditto.
* testsuite/arm_cortex_a8_b.s: Ditto.
* testsuite/arm_cortex_a8_b_cond.s: Ditto.
* testsuite/arm_cortex_a8_b_local.s: Ditto.
* testsuite/arm_cortex_a8_bl.s: Ditto.
* testsuite/arm_cortex_a8_blx.s: Ditto.
* testsuite/arm_cortex_a8_local.s: Ditto.
* testsuite/arm_cortex_a8_local_reloc.s: Ditto.
* testsuite/thumb_bl_out_of_range_local.s: Ditto.
* i386.cc (class Output_data_plt_i386): Update declarations.
Define Global_ifunc and Local_ifunc types. Add global_ifuncs_ and
local_ifuncs_ fields.
(Target_i386::do_plt_section_for_global): New function.
(Target_i386::do_plt_section_for_local): New function.
(Output_data_plt_i386::Output_data_plt_i386): Add symtab
parameter; change all callers. Initialize global_ifuncs_ and
local_ifuncs_. If doing a static link define __rel_iplt_start and
__rel_iplt_end.
(Output_data_plt_i386::add_entry): Handle IFUNC symbols.
(Output_data_plt_i386::add_local_ifunc_entry): New function.
(Output_data_plt_i386::do_write): Fix GOT entries for IFUNC
symbols.
(Target_i386::make_plt_section): New function, broken out of
make_plt_entry. Set sh_info field of .rel.plt to point to .plt.
(Target_i386::make_plt_entry): Call make_plt_section.
(Target_i386::make_local_ifunc_plt_entry): New function.
(Target_i386::Scan::reloc_needs_iplt_for_ifunc): New function.
(Target_i386::Scan::local): Handle IFUNC symbols. Add
R_386_IRELATIVE to switch.
(Target_i386::Scan::global): Likewise.
(Target_i386::Relocate::relocate): Likewise.
(Target_i386::Relocatable_size_for_reloc): Add R_386_IRELATIVE to
switch.
* x86_64.cc (class Output_data_plt_x86_64): Update declarations.
(Target_x86_64::do_plt_section_for_global): New function.
(Target_x86_64::do_plt_section_for_local): New function.
(Output_data_plt_x86_64::Output_data_plt_x86_64): Add symtab
parameter; change all callers. If doing a static link define
__rela_iplt_start and __rela_iplt_end.
(Output_data_plt_x86_64::add_entry): Handle IFUNC symbols.
(Output_data_plt_x86_64::add_local_ifunc_entry): New function.
(Target_x86_64::make_plt_section): Set sh_info field of .rel.plt
to point to .plt.
(Target_x86_64::make_local_ifunc_plt_entry): New function.
(Target_x86_64::Scan::check_non_pic): Add R_X86_64_IRELATIVE to
switch.
(Target_x86_64::Scan::reloc_needs_iplt_for_ifunc): New function.
(Target_x86_64::Scan::local): Handle IFUNC symbols. Add
R_X86_64_IRELATIVE to switch.
(Target_x86_64::Scan::global): Likewise.
(Target_x86_64::Relocate::relocate): Likewise.
(Target_x86_64::Relocatable_size_for_reloc): Add R_X86_64_IRELATIVE to
switch.
* target.h (class Target): Add plt_section_for_global and
plt_section_for_local functions. Add do_plt_section_for_global
and do_plt_section_for_local virtual functions.
* symtab.h (Symbol::needs_plt_entry): Handle IFUNC symbol. Add
clarifying comments.
(Symbol::use_plt_offset): Handle IFUNC symbol.
* object.cc (Sized_relobj::Sized_relobj): Initialize
local_plt_offsets_.
(Sized_relobj::local_has_plt_offset): New function.
(Sized_relobj::local_plt_offset): New function.
(Sized_relobj::set_local_plt_offset): New function.
(Sized_relobj::do_count): Handle IFUNC symbol.
* object.h (class Symbol_value): Add is_ifunc_symbol_ field. Take
a bit away from input_shndx_ field. Add set_is_func_symbol and
is_ifunc_symbol functions.
(class Sized_relobj): Update declarations. Remove Tls_got_entry
and Local_tls_got_offsets. Define Local_plt_offsets. Add
local_plt_offsets_ field.
(Sized_relobj::clear_local_symbols): Clear local_plt_offsets_.
* output.h (class Output_section_data): Add non-const
output_section function.
(class Output_data_got): Update declarations.
(class Output_data_got::Got_entry): Add use_plt_offset_ field.
Add use_plt_offset parameter to global and local constructors.
Change all callers. Change local_sym_index_ field to 31 bits.
Change GSYM_CODE and CONSTANT_CODE accordingly.
* output.cc (Output_data_reloc_base::do_adjust_output_section): If
doing a static link don't set sh_link field.
(Output_data_got::Got_entry::write): Use PLT offset if
appropriate.
(Output_data_got::add_global_plt): New function.
(Output_data_got::add_local_plt): New function.
* target-reloc.h (relocate_section): Handle IFUNC symbol.
* defstd.cc (in_section): Remove entries for __rel_iplt_start,
__rel_iplt_end, __rela_iplt_start, and __rela_iplt_end.
* configure.ac: Set IFUNC automake conditional for glibc >= 2.11.
* testsuite/Makefile.am: Add a bunch of IFUNC tests, all within
IFUNC conditional.
* testsuite/ifunc-sel.h: New file.
* testsuite/ifuncmain1.c: New file.
* testsuite/ifuncmain1vis.c: New file.
* testsuite/ifuncmod1.c: New file.
* testsuite/ifuncdep2.c: New file.
* testsuite/ifuncmain2.c: New file.
* testsuite/ifuncmain3.c: New file.
* testsuite/ifuncmod3.c: New file.
* testsuite/ifuncmain4.c: New file.
* testsuite/ifuncmain5.c: New file.
* testsuite/ifuncmod5.c: New file.
* testsuite/ifuncmain6pie.c: New file.
* testsuite/ifuncmod6.c: New file.
* testsuite/ifuncmain7.c: New file.
* configure, testsuite/Makefile.in: Rebuild.
* elfcpp.h (enum SHT): Add SHT_GNU_INCREMENTAL_SYMTAB,
SHT_GNU_INCREMENTAL_RELOCS.
gold/ChangeLog:
* archive.cc: Include incremental.h.
(Archive::Archive): Initialize incremental_info_.
(Archive::include_member): Record archive members in incremental info.
(Add_archive_symbols::run): Record begin and end of an archive in
incremental info.
(Lib_group::include_member): Record objects in incremental info.
* archive.h (Incremental_archive_entry): Forward declaration.
(Archive::set_incremental_info): New member function.
(Archive::incremental_info): New member function.
(Archive::Unused_symbol_iterator): New class.
(Archive::unused_symbols_begin): New member function.
(Archive::unused_symbols_end): New member function.
(Archive::incremental_info_): New data member.
* incremental-dump.cc (find_input_containing_global): New function.
(dump_incremental_inputs): Dump new incremental info sections.
* incremental.cc: Include symtab.h.
(Output_section_incremental_inputs): New class.
(Sized_incremental_binary::do_find_incremental_inputs_sections): Support
new incremental info sections.
(Sized_incremental_binary::do_check_inputs): Likewise.
(Incremental_inputs::report_archive): Remove.
(Incremental_inputs::report_archive_begin): New function.
(Incremental_inputs::report_archive_end): New function.
(Incremental_inputs::report_object): New function.
(Incremental_inputs::finalize_inputs): Remove.
(Incremental_inputs::report_input_section): New function.
(Incremental_inputs::report_script): Rewrite.
(Incremental_inputs::finalize): Do nothing but finalize string table.
(Incremental_inputs::create_incremental_inputs_section_data): Remove.
(Incremental_inputs::sized_create_inputs_section_data): Remove.
(Incremental_inputs::create_data_sections): New function.
(Incremental_inputs::relocs_entsize): New function.
(Output_section_incremental_inputs::set_final_data_size): New function.
(Output_section_incremental_inputs::do_write): New function.
(Output_section_incremental_inputs::write_header): New function.
(Output_section_incremental_inputs::write_input_files): New function.
(Output_section_incremental_inputs::write_info_blocks): New function.
(Output_section_incremental_inputs::write_symtab): New function.
* incremental.h (Incremental_script_entry): Forward declaration.
(Incremental_object_entry): Forward declaration.
(Incremental_archive_entry): Forward declaration.
(Incremental_inputs): Forward declaration.
(Incremental_inputs_header_data): Remove.
(Incremental_inputs_header): Remove.
(Incremental_inputs_header_write): Remove.
(Incremental_inputs_entry_data): Remove.
(Incremental_inputs_entry): Remove.
(Incremental_inputs_entry_write): Remove.
(enum Incremental_input_type): Add INCREMENTAL_INPUT_ARCHIVE_MEMBER.
(Incremental_binary::find_incremental_inputs_sections): Add parameters.
(Incremental_binary::do_find_incremental_inputs_sections): Likewise.
(Sized_ncremental_binary::do_find_incremental_inputs_sections):
Likewise.
(Incremental_input_entry): New class.
(Incremental_script_entry): New class.
(Incremental_object_entry): New class.
(Incremental_archive_entry): New class.
(Incremental_inputs::Incremental_inputs): Initialize new data members.
(Incremental_inputs::report_inputs): Remove.
(Incremental_inputs::report_archive): Remove.
(Incremental_inputs::report_archive_begin): New function.
(Incremental_inputs::report_archive_end): New function.
(Incremental_inputs::report_object): Change prototype.
(Incremental_inputs::report_input_section): New function.
(Incremental_inputs::report_script): Change prototype.
(Incremental_inputs::get_reloc_count): New function.
(Incremental_inputs::set_reloc_count): New function.
(Incremental_inputs::create_data_sections): New function.
(Incremental_inputs::create_incremental_inputs_section_data): Remove.
(Incremental_inputs::inputs_section): New function.
(Incremental_inputs::symtab_section): New function.
(Incremental_inputs::relocs_section): New function.
(Incremental_inputs::get_stringpool): Add const.
(Incremental_inputs::command_line): Add const.
(Incremental_inputs::inputs): Remove.
(Incremental_inputs::command_line_key): New function.
(Incremental_inputs::input_file_count): New function.
(Incremental_inputs::input_files): New function.
(Incremental_inputs::relocs_entsize): New function.
(Incremental_inputs::sized_create_inputs_section_data): Remove.
(Incremental_inputs::finalize_inputs): Remove.
(Incremental_inputs::Input_info): Remove.
(Incremental_inputs::lock_): Remove.
(Incremental_inputs::inputs_): Change type.
(Incremental_inputs::inputs_map_): Remove.
(Incremental_inputs::current_object_entry_): New data member.
(Incremental_inputs::inputs_section_): New data member.
(Incremental_inputs::symtab_section_): New data member.
(Incremental_inputs::relocs_section_): New data member.
(Incremental_inputs::reloc_count_): New data member.
(Incremental_inputs_reader): New class.
(Incremental_symtab_reader): New class.
(Incremental_relocs_reader): New class.
* layout.cc (Layout::finalize): Move finalization of incremental info
and creation of incremental info sections to follow finalization of
symbol table. Set offsets for postprocessing sections.
(Layout::create_incremental_info_sections): Call
Incremental_inputs::create_data_sections. Add incremental symtab
and relocs sections. Set sh_entsize and sh_link fields. Arrange for
sections to layout after input sections.
* layout.h (struct Timespec): Forward declaration.
(Layout::incremental_inputs): Add const.
(Layout::create_incremental_info_sections): Add parameter.
* main.cc (main): Remove call to Incremental_inputs::report_inputs.
* object.cc: Include incremental.h.
(Relobj::finalize_incremental_relocs): New function.
(Sized_relobj::do_layout): Record input sections in incremental info.
* object.h (Object::output_section): New function.
(Object::output_section_offset): Moved from Relobj.
(Object::get_incremental_reloc_base): New function.
(Object::get_incremental_reloc_count): New function.
(Object::do_output_section): New function.
(Object::do_output_section_offset): Moved from Relobj.
(Object::do_get_incremental_reloc_base): New function.
(Object::do_get_incremental_reloc_count): New function.
(Object::Object): Initialize new data members.
(Relobj::output_section): Renamed do_output_section and moved to
protected.
(Relobj::output_section_offset): Moved to Object.
(Relobj::do_get_incremental_reloc_base): New function.
(Relobj::do_get_incremental_reloc_count): New function.
(Relobj::allocate_incremental_reloc_counts): New function.
(Relobj::count_incremental_reloc): New function.
(Relobj::finalize_incremental_relocs): New function.
(Relobj::next_incremental_reloc_index): New function.
(Relobj::reloc_counts_): New data member.
(Relobj::reloc_bases_): New data member.
(Sized_relobj::do_relocate_sections): Add parameter. Change caller.
(Sized_relobj::relocate_sections): Add parameter. Change all callers.
(Sized_relobj::incremental_relocs_scan): New function.
(Sized_relobj::incremental_relocs_scan_reltype): New function.
(Sized_relobj::incremental_relocs_write): New function.
(Sized_relobj::incremental_relocs_write_reltype): New function.
* plugin.cc (Plugin_manager::add_input_file): Rewrite test for
incremental link.
* readsyms.cc (Read_symbols::do_read_symbols): Move reporting of
archives and object files elsewhere.
(Add_symbols::run): Report object files here.
(Finish_group::run): Report end of archive at end of group.
* reloc.cc: Include layout.h, incremental.h.
(Sized_relobj::do_read_relocs): Need relocations for incremental link.
(Sized_relobj::do_scan_relocs): Record relocations for incremental link.
(Sized_relobj::incremental_relocs_scan): New function.
(Sized_relobj::incremental_relocs_scan_reltype): New function.
(Sized_relobj::do_relocate_sections): Write incremental relocations.
(Sized_relobj::incremental_relocs_write): New function.
(Sized_relobj::incremental_relocs_write_reltype): New function.
* script.cc (read_input_script): Rewrite test for incremental link.
Change call to Incremental_inputs::report_script.
* symtab.h (Symbol_table::first_global_index): New function.
(Symbol_table::output_count): New function.
(Sized_relobj::do_layout_deferred_sections): Do layout for deferred
reloc sections.
* object.h (Sized_relobj::deferred_layout_relocs_): New data member.
PR 11683
* symtab.h (Symbol::is_placeholder): New member function.
* target-reloc.h (relocate_section): Check for placeholder symbols.
* testsuite/Makefile.am (plugin_test_8): New test.
(plugin_test_9): New test.
* testsuite/Makefile.in: Regenerate.
* object.cc (Sized_relobj::do_finalize_local_symbols): Use offset
from start of output section instead of address for a local symbol
in a merged or relaxed section when doing a relocatable link.
releasing file.
* object.cc (Read_symbols_data::~Read_symbols_data) New destructor.
* object.h (Read_symbols_data::Read_symbols_data) New constructor.
(Read_symbols_data::~Read_symbols_data) New destructor.
(Section_relocs::Section_relocs) New constructor.
(Section_relocs::~Section_relocs) New destructor.
(Read_relocs_data::Read_relocs_data) New constructor.
(Read_relocs_data::~Read_relocs_data) New destructor.
* testsuite/binary_unittest.cc (Sized_binary_test): Set sd member
pointers to NULL after deleting.
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.
(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.
* 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.
* 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.
* 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.
* 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.
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.
* 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.
* elfcpp_file.h: Fix header guard. Include <cstdio>.
(class Elf_recognizer): New class, code from gold/object.cc.
(Elf_file::find_section_by_type): New method.
gold/:
* 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.
* 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.
* 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.
* 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.
* 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.
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.
* 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.
(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.
(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.
* 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.
* 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.
* 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.
* 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.
Doug Kwan
Nick Clifton
Ian Lance Taylor
Cary Coutant
Rafael Ávila de Espíndola
Sriraman Tallam
Craig Silverstein