The problem is that while the command line isn't trivially empty,
it contains no input files. As gold tries to configure the number
of threads to use based on the number of input files, this causes
the assertion failure above. Fix this problem by making the logic
in gold.cc more robust and also adding a better error message
about --start-lib to options.cc.
gold/
PR gold/22406
* gold.cc (queue_initial_tasks) Check for number of real input files.
* options.cc (Command_line::process) Check for unterminated --start-lib
options.
* testsuite/Makefile.am: Add new test script.
* testsuite/Makefile.in: Regenerate.
* testsuite/check_empty_command_lines.sh: New test script.
When --build-id=tree is selected, gold would schedule a set of
tasks to run to compute md5 hashes in parallel on chunks of the
file. The scheduling was done before the
Write_after_input_sections_task ran, so if we are compressing
debug sections, the output file will change size and be remapped
to a new address, sometimes causing the build id computation to
crash, but even when it doesn't crash, it wouldn't include the
debug information in the hash computation.
This patch delays the scheduling of the md5 tasks until after
Write_after_input_sections_task.
gold/
PR gold/17819
* gold.cc (queue_final_tasks): When --build-id=tree, queue a
separate task to schedule the build id computation.
* layout.cc (Hash_task::Hash_task): Remove build_id_blocker,
add Output_file and offset.
(Hash_task::run): Get and release the input views.
(Hash_task::is_runnable): Always return NULL (always runnable).
(Layout::queue_build_id_tasks): Remove.
(Layout::write_build_id): Add array_of_hashes and size_of_hashes
parameters; use them instead of class members.
(Build_id_task_runner::run): New function.
(Close_task_runner::run): Pass array_of_hashes and size_of_hashes
to write_build_id.
* layout.h (Layout::queue_build_id_tasks): Remove.
(Layout::write_build_id): Add array_of_hashes and size_of_hashes
parameters.
(Layout::array_of_hashes_): Remove.
(Layout::size_of_array_of_hashes_): Remove.
(Layout::input_view_): Remove.
(Build_id_task_runner): New class.
(Close_task_runner::Close_task_runner): Add array_of_hashes and
size_of_hashes parameters.
(Close_task_runner::array_of_hashes_): New data member.
(Close_task_runner::size_of_hashes_): New data member.
* testsuite/Makefile.am
(flagstest_compress_debug_sections_and_build_id_tree): New test.
* testsuite/Makefile.in: Regenerate.
In a previous patch for PR 14675, to fix a problem with
the .eh_frame section when static linking, I added a step to
finalize the .eh_frame section at the end of the first link
pass. This patch caused PR 18152, where a plugin-claimed
object caused a non-claimed object's layout to be deferred
until replacement files were read. The call to
finalize_eh_frame_section() is happening before the layout of
the deferred objects, leading to the internal error in
do_relocate_sections.
This patch moves the finalization of the .eh_frame section to
after deferred objects have been processed.
gold/
PR gold/14675
PR gold/18152
* gold.cc (queue_middle_tasks): Finalize .eh_frame after laying out
deferred objects.
Because the __EH_FRAME_BEGIN__ symbol is provided in an empty .eh_frame
section in crtbeginT.o, if crt1.o has a non-empty .eh_frame section,
we place all optimized .eh_frame sections into the output section ahead
of the __EH_FRAME_BEGIN__ symbol, which breaks EH for statically-linked
binaries.
This patch fixes the problem by delaying the attachment of the optimized
.eh_frame sections to the output section until we see the end marker
section (or to the end of pass 1 if we never see an end marker).
gold/
PR gold/14675
* ehframe.cc (Eh_frame::add_ehframe_input_section): Change return type;
return enum indicating whether .eh_frame section is empty, optimizable,
unrecognized, or an end marker. Adjust explicit instantiations.
* ehframe.h (Eh_frame::Eh_frame_section_disposition): New enum type.
(Eh_frame::add_ehframe_input_section): Change return type.
* gold.cc (queue_middle_tasks): Call Layout::finalize_eh_frame_section.
* layout.cc (Layout::layout_eh_frame): Don't add optimized sections
to the .eh_frame output section until we see the end marker.
(Layout::finalize_eh_frame_section): New.
* layout.h: (Layout::finalize_eh_frame_section): New.
gold/
* gold.cc (queue_final_tasks): invoke layout->queue_build_id_tasks().
* layout.cc (Hash_task): New class.
(Layout::queue_build_id_tasks): New function.
(Layout::write_build_id): Handle single-thread portion of build ID
computation. (In some cases, all of it is single-threaded.) Replace
{sha1,md5}_process_bytes with {sha1,md5}_buffer to get the same
functionality in fewer lines of code.
* layout.h (Layout::queue_build_id_tasks): New function declaration.
* options.h (General_options): make "--build-id" default to tree
rather than sha1. Add two new options related to --build-id=tree:
--build-id-chunk-size-for-treehash and
--build-id-min-file-size-for-treehash.
* Makefile.am: add testing of --build-id=tree and related new options
(these tests will be invoked by "make check").
* Makefile.in: Regenerate.
(Sized_target::gc_add_reference, do_gc_add_reference): New functions.
* gc.h (gc_process_relocs): Call target gc_add_reference.
* gold.cc (queue_middle_tasks): Use gc_mark_symbol on start sym.
* symtab.cc (Symbol_table::gc_mark_undef_symbols): Use gc_mark_symbol.
(Symbol_table::gc_mark_symbol): Call target gc_mark_symbol. Remove
unnecessary cast.
* powerpc.cc (Powerpc_relobj::get_opd_ent): Rearrange parameters
to cater for when we don't need code offset. Update use.
(Powerpc_relobj::access_from_map_, opd_valid_): New vars.
(Powerpc_relobj::access_from_map, add_reference, opd_valid,
set_opd_valid): New functions.
(Target_powerpc::do_gc_add_reference): New function.
(Target_powerpc::gc_process_relocs): Call gc()->add_reference on
stashed refs.
(Target_powerpc::do_gc_mark_symbol): New function.
segments.
2012-08-24 Sriraman Tallam <tmsriram@google.com>
* gold.cc (queue_middle_tasks): Call layout again when unique
segments for sections is desired.
* layout.cc (Layout::Layout): Initialize new members.
(Layout::get_output_section_flags): New function.
(Layout::choose_output_section): Call get_output_section_flags.
(Layout::layout): Make output section for mapping to a unique segment.
(Layout::insert_section_segment_map): New function.
(Layout::attach_allocated_section_to_segment): Make unique segment for
output sections marked so.
(Layout::segment_precedes): Check for unique segments when sorting.
* layout.h (Layout::Unique_segment_info): New struct.
(Layout::Section_segment_map): New typedef.
(Layout::insert_section_segment_map): New function.
(Layout::get_output_section_flags): New function.
(Layout::is_unique_segment_for_sections_specified): New function.
(Layout::set_unique_segment_for_sections_specified): New function.
(Layout::unique_segment_for_sections_specified_): New member.
(Layout::section_segment_map_): New member.
* object.cc (Sized_relobj_file<size, big_endian>::do_layout):
Rename is_gc_pass_one to is_pass_one.
Rename is_gc_pass_two to is_pass_two.
Rename is_gc_or_icf to is_two_pass.
Check for which pass based on whether symbols data is present.
Make it two pass when unique segments for sections is desired.
* output.cc (Output_section::Output_section): Initialize new
members.
* output.h (Output_section::is_unique_segment): New function.
(Output_section::set_is_unique_segment): New function.
(Output_section::is_unique_segment_): New member.
(Output_section::extra_segment_flags): New function.
(Output_section::set_extra_segment_flags): New function.
(Output_section::extra_segment_flags_): New member.
(Output_section::segment_alignment): New function.
(Output_section::set_segment_alignment): New function.
(Output_section::segment_alignment_): New member.
(Output_segment::Output_segment): Initialize is_unique_segment_.
(Output_segment::is_unique_segment): New function.
(Output_segment::set_is_unique_segment): New function.
(Output_segment::is_unique_segment_): New member.
* plugin.cc (allow_unique_segment_for_sections): New function.
(unique_segment_for_sections): New function.
(Plugin::load): Add new functions to transfer vector.
* Makefile.am (plugin_final_layout.readelf.stdout): Add readelf output.
* Makefile.in: Regenerate.
* testsuite/plugin_final_layout.sh: Check if unique segment
functionality works.
* testsuite/plugin_section_order.c (onload): Check if new interfaces
are available.
(allow_unique_segment_for_sections): New global.
(unique_segment_for_sections): New global.
(claim_file_hook): Call allow_unique_segment_for_sections.
(all_symbols_read_hook): Call unique_segment_for_sections.
2012-08-24 Sriraman Tallam <tmsriram@google.com>
* plugin-api.h (ld_plugin_allow_unique_segment_for_sections):
New interface.
(ld_plugin_unique_segment_for_sections): New interface.
(LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS): New enum val.
(LDPT_UNIQUE_SEGMENT_FOR_SECTIONS): New enum val.
(tv_allow_unique_segment_for_sections): New member.
(tv_unique_segment_for_sections): New member.
* configure: Regenerate.
gold/
* nacl.cc: New file.
* nacl.h: New file.
* Makefile.am (CCFILES, HFILES): Add them.
* Makefile.in: Regenerate.
* i386.cc (Output_data_plt_i386_nacl): New class.
(Output_data_plt_i386_nacl_exec): New class.
(Output_data_plt_i386_nacl_dyn): New class.
(Target_i386_nacl): New class.
(Target_selector_i386_nacl): New class.
(target_selector_i386): Use it instead of Target_selector_i386.
* x86_64.cc (Output_data_plt_x86_64_nacl): New class.
(Target_x86_64_nacl): New class.
(Target_selector_x86_64_nacl): New class.
(target_selector_x86_64, target_selector_x32): Use it instead of
Target_selector_x86_64.
* arm.cc (Output_data_plt_arm_nacl): New class.
(Target_arm_nacl): New class.
(Target_selector_arm_nacl): New class.
(target_selector_arm, target_selector_armbe): Use it instead of
Target_selector_arm.
* target-select.cc (select_target): Take new Input_file* and off_t
arguments, pass them on to recognize method of selector.
* object.cc (make_elf_sized_object): Update caller.
* parameters.cc (parameters_force_valid_target): Likewise.
* incremental.cc (make_sized_incremental_binary): Likewise.
* target-select.h: Update decl.
(Target_selector::recognize): Take new Input_file* argument,
pass it on to do_recognize.
(Target_selector::do_recognize): Take new Input_file* argument.
* freebsd.h (Target_selector_freebsd::do_recognize): Likewise.
* powerpc.cc (Target_selector_powerpc::do_recognize): Likewise.
* sparc.cc (Target_selector_sparc::do_recognize): Likewise.
* testsuite/testfile.cc (Target_selector::do_recognize): Likewise.
* target.h (Target::Target_info): New members isolate_execinstr
and rosegment_gap.
(Target::isolate_execinstr, Target::rosegment_gap): New methods.
* arm.cc (Target_arm::arm_info): Update initializer.
* i386.cc (Target_i386::i386_info): Likewise.
* powerpc.cc (Target_powerpc::powerpc_info): Likewise.
* sparc.cc (Target_sparc::sparc_info): Likewise.
* x86_64.cc (Target_x86_64::x86_64_info): Likewise.
* testsuite/testfile.cc (Target_test::test_target_info): Likewise.
* layout.cc (Layout::attach_allocated_section_to_segment):
Take new const Target* argument. If target->isolate_execinstr(), act
like --rosegment.
(Layout::find_first_load_seg): Take new const Target* argument;
if target->isolate_execinstr(), reject PF_X segments.
(Layout::relaxation_loop_body): Update caller.
(Layout::set_segment_offsets): If target->isolate_execinstr(),
reset file offset to zero when we hit LOAD_SEG, and then do a second
loop over the segments before LOAD_SEG to reassign offsets after
addresses have been determined. Handle target->rosegment_gap().
(Layout::attach_section_to_segment): Take new const Target* argument;
pass it to attach_allocated_section_to_segment.
(Layout::make_output_section): Update caller.
(Layout::attach_sections_to_segments): Take new const Target* argument;
pass it to attach_section_to_segment.
* gold.cc (queue_middle_tasks): Update caller.
* layout.h (Layout): Update method decls with new arguments.
* arm.cc (Target_arm::Target_arm): Take optional argument for the
Target_info pointer to use.
(Target_arm::do_make_data_plt): New virtual method.
(Target_arm::make_data_plt): New method that calls it.
(Target_arm::make_plt_entry): Use it.
(Output_data_plt_arm::Output_data_plt_arm): Take additional argument
for the section alignment.
(Output_data_plt_arm::do_first_plt_entry_offset): New abstract virtual
method.
(Output_data_plt_arm::first_plt_entry_offset): Call it.
(Output_data_plt_arm::do_get_plt_entry_size): New abstract virtual
method.
(Output_data_plt_arm::get_plt_entry_size): Call it.
(Output_data_plt_arm::do_fill_plt_entry): New abstract virtual method.
(Output_data_plt_arm::fill_plt_entry): New method that calls it.
(Output_data_plt_arm::do_fill_first_plt_entry): New abstract virtual
method.
(Output_data_plt_arm::fill_first_plt_entry): New method that calls it.
(Output_data_plt_arm::set_final_data_size): Use get_plt_entry_size
method instead of sizeof(plt_entry).
(Output_data_plt_arm::add_entry): Likewise.
Use first_plt_entry_offset method instead of sizeof(first_plt_entry).
(Target_arm::first_plt_entry_offset): Call method on this->plt_ rather
than static method.
(Target_arm::plt_entry_size): Likewise.
(Output_data_plt_arm::first_plt_entry, Output_data_plt_arm::plt_entry):
Move to ...
(Output_data_plt_arm_standard): ... here, new class.
(Output_data_plt_arm::do_write): Move guts of PLT filling to...
(Output_data_plt_arm_standard::do_fill_first_plt_entry): ... here ...
(Output_data_plt_arm_standard::do_fill_plt_entry): ... and here.
* x86_64.cc (Output_data_plt_x86_64::Output_data_plt_x86_64):
Take additional argument for the PLT entry size.
(Output_data_plt_x86_64::get_tlsdesc_plt_offset):
Use get_plt_entry_size method rather than plt_entry_size variable.
(Output_data_plt_x86_64::reserve_slot): Likewise.
(Output_data_plt_x86_64::do_adjust_output_section): Likewise.
(Output_data_plt_x86_64::add_entry): Likewise.
(Output_data_plt_x86_64::add_local_ifunc_entry): Likewise.
(Output_data_plt_x86_64::address_for_global): Likewise.
(Output_data_plt_x86_64::address_for_local): Likewise.
(Output_data_plt_x86_64::set_final_data_size): Likewise.
(Output_data_plt_x86_64::first_plt_entry_offset): Likewise.
Make method non-static.
(Output_data_plt_x86_64::do_get_plt_entry_size): New abstract virtual
method.
(Output_data_plt_x86_64::get_plt_entry_size): Just call that.
(Output_data_plt_x86_64::do_add_eh_frame): New abstract virtual method.
(Output_data_plt_x86_64::add_eh_frame): New method to call it.
(Output_data_plt_x86_64::do_fill_first_plt_entry): New abstract
virtual method.
(Output_data_plt_x86_64::fill_first_plt_entry): New method to call it.
(Output_data_plt_x86_64::do_fill_plt_entry): New abstract
virtual method.
(Output_data_plt_x86_64::fill_plt_entry): New method to call it.
(Output_data_plt_x86_64::do_fill_tlsdesc_entry): New abstract
virtual method.
(Output_data_plt_x86_64::fill_tlsdesc_entry): New method to call it.
(Output_data_plt_x86_64::plt_entry_size)
(Output_data_plt_x86_64::first_plt_entry)
(Output_data_plt_x86_64::plt_entry)
(Output_data_plt_x86_64::tlsdesc_plt_entry)
(Output_data_plt_x86_64::plt_eh_frame_fde_size)
(Output_data_plt_x86_64::plt_eh_frame_fde): Move to ...
(Output_data_plt_x86_64_standard): ... here, new class.
(Target_x86_64::Target_x86_64): Take optional argument for the
Target_info pointer to use.
(Target_x86_64::do_make_data_plt): New virtual method.
(Target_x86_64::make_data_plt): New method to call it.
(Target_x86_64::init_got_plt_for_update): Use that.
Call this->plt_->add_eh_frame method here.
(Output_data_plt_x86_64::init): Don't do add_eh_frame_for_plt here.
(Target_x86_64::first_plt_entry_offset): Call method on this->plt_
rather than static method.
(Target_x86_64::plt_entry_size): Likewise.
(Output_data_plt_x86_64::do_write): Use get_plt_entry_size method
rather than plt_entry_size variable. Move guts of PLT filling to...
(Output_data_plt_x86_64_standard::do_fill_first_plt_entry): ... here ...
(Output_data_plt_x86_64_standard::do_fill_plt_entry): ... and here ...
(Output_data_plt_x86_64_standard::do_fill_tlsdesc_entry): ... and here.
* i386.cc (Output_data_plt_i386::Output_data_plt_i386): Take
additional argument for the section alignment.
Don't do add_eh_frame_for_plt here.
(Output_data_plt_i386::first_plt_entry_offset): Make the method
non-static. Use get_plt_entry_size method rather than plt_entry_size
variable.
(Output_data_plt_i386::do_get_plt_entry_size): New abstract virtual
method.
(Output_data_plt_i386::get_plt_entry_size): Call it.
(Output_data_plt_i386::do_add_eh_frame): New abstract virtual method.
(Output_data_plt_i386::add_eh_frame): New method to call it.
(Output_data_plt_i386::do_fill_first_plt_entry): New abstract virtual
method.
(Output_data_plt_i386::fill_first_plt_entry): New method to call it.
(Output_data_plt_i386::do_fill_plt_entry): New abstract virtual
method.
(Output_data_plt_i386::fill_plt_entry): New method to call it.
(Output_data_plt_i386::set_final_data_size): Use get_plt_entry_size
method instead of plt_entry_size.
(Output_data_plt_i386::plt_entry_size)
(Output_data_plt_i386::plt_eh_frame_fde_size)
(Output_data_plt_i386::plt_eh_frame_fde): Move to ...
(Output_data_plt_i386_standard): ... here, new class.
(Output_data_plt_i386_exec): New class.
(Output_data_plt_i386::exec_first_plt_entry): Move to ...
(Output_data_plt_i386_exec::first_plt_entry): ... here.
(Output_data_plt_i386::exec_plt_entry): Move to ...
(Output_data_plt_i386_exec::plt_entry): ... here.
(Output_data_plt_i386_dyn): New class.
(Output_data_plt_i386::first_plt_entry): Move to ...
(Output_data_plt_i386_dyn::first_plt_entry): ... here.
(Output_data_plt_i386::dyn_plt_entry): Move to ...
(Output_data_plt_i386_dyn::plt_entry): ... here.
(Target_i386::Target_i386): Take optional argument for the Target_info
pointer to use.
(Target_i386::do_make_data_plt): New virtual method.
(Target_i386::make_data_plt): New method to call it.
(Target_i386::make_plt_section): Use that.
Call this->plt_->add_eh_frame method here.
(Output_data_plt_i386::add_entry): Use get_plt_entry_size method
rather than plt_entry_size variable.
(Output_data_plt_i386::add_local_ifunc_entry): Likewise.
(Output_data_plt_i386::address_for_local): Likewise.
(Output_data_plt_i386::do_write): Likewise.
Move guts of PLT filling to...
(Output_data_plt_i386_exec::do_fill_first_plt_entry): ... here ...
(Output_data_plt_i386_exec::do_fill_plt_entry): ... and here ...
(Output_data_plt_i386_dyn::do_fill_first_plt_entry): ... and here ...
(Output_data_plt_i386_dyn::do_fill_plt_entry): ... and here.
Change-Id: Id24b95600489835ff5e860a39c147203d4380c2b
* arm.cc (Target_arm::do_define_standard_symbols): New method.
(Target_arm::do_finalize_sections): Remove code which defines
__exidx_start and __exidx_end. Make symbol table parameter
anonymous as it is not used.
* gold.cc (queue_middle_tasks): Call target hook to define any
target-specific symbols.
* target.h (Target::define_standard_symbols): New method.
(Target::do_define_standard_symbols): Same.
* testsuite/Makefile.am (arm_exidx_test): Dump relocations also.
* testsuite/Makefile.in: Regenerate.
* testsuite/arm_exidx.s: Generate data relocations for __exidx_start
and __exidx_end.
* testsuite/arm_exidx_test.sh: Check that no unused dynamic
relocations are generated for __exidx_start and __exidx_end.
(queue_middle_tasks): Stamp time.
(queue_final_tasks): Likewise.
* main.cc (main): Store timer in parameters. Print timers
for each pass.
* parameters.cc (Parameters::Parameters): Initialize timer_.
(Parameters::set_timer): New function.
(set_parameters_timer): New function.
* parameters.h (Parameters::set_timer): New function.
(Parameters::timer): New function.
(Parameters::timer_): New data member.
(set_parameters_timer): New function.
* timer.cc (Timer::stamp): New function.
(Timer::get_pass_time): New function.
* timer.h (Timer::stamp): New function.
(Timer::get_pass_time): New function.
(Timer::pass_times_): New data member.
* layout.h (section_order_map_): New member.
(get_section_order_map): New member function.
* output.cc (Output_section::add_input_section): Check for patterns
only when --section-ordering-file is specified.
* gold.cc (queue_middle_tasks): Delay updating order of sections till
output_sections have been formed.
* layout.cc (Layout_Layout): Initialize section_order_map_.
* plugin.cc (update_section_order): Store order in order_map. Do not
update the order.
* testsuite/Makefile.am: Add test case for plugin_final_layout.
* testsuite/Makefile.in: Regenerate.
* testsuite/plugin_section_order.c: New file.
* testsuite/plugin_final_layout.cc: New file.
* testsuite/plugin_final_layout.sh: New file.
Move -EL next to -EB, for better --help output.
* target-select.cc: Include <cstdio>, "options.h", and
"parameters.h".
(Target_selector::do_target_bfd_name): New function.
(print_output_format): New function.
* target-select.h (class Target_selector): Update declarations.
(Target_selector::target_bfd_name): New function.
(print_output_format): Declare.
* main.cc: Include "target-select.h".
(main): Handle --print-output-format.
* gold.cc: Include "target-select.h".
(queue_initial_tasks): Handle --print-output-format when there are
no input files.
* parameters.cc (parameters_force_valid_target): Give a better
error message if -EB/-EL does not match target.
* freebsd.h (Target_selector_freebsd::do_target_bfd_name): New
function.
* gold/gold.cc (queue_initial_tasks): Warn if --incremental is
used with --compress-debug-sections.
* gold/object.cc (Sized_relobj_file::do_layout): Report
uncompressed size of compressed input sections.
instead of emit_copy_reloc.
(Copy_relocs::emit_copy_reloc): Refactor.
(Copy_relocs::make_copy_reloc): New function.
(Copy_relocs::add_copy_reloc): Remove.
* copy-relocs.h (Copy_relocs::emit_copy_reloc): Move to public
section.
(Copy_relocs::make_copy_reloc): New function.
(Copy_relocs::add_copy_reloc): Remove.
* gold.cc (queue_middle_tasks): Emit old COPY relocations from
unchanged input files.
* incremental-dump.cc (dump_incremental_inputs): Print "COPY" flag.
* incremental.cc (Sized_incremental_binary::do_reserve_layout):
Reserve BSS space for COPY relocations.
(Sized_incremental_binary::do_emit_copy_relocs): New function.
(Output_section_incremental_inputs::write_info_blocks): Record
whether a symbol is copied from a shared object.
(Sized_incr_dynobj::do_add_symbols): Record COPY relocations.
* incremental.h (enum Incremental_shlib_symbol_flags): New type.
(INCREMENTAL_SHLIB_SYM_FLAGS_SHIFT): New constant.
(Incremental_input_entry_reader::get_output_symbol_index): Add
is_copy parameter.
(Incremental_binary::emit_copy_relocs): New function.
(Incremental_binary::do_emit_copy_relocs): New function.
(Sized_incremental_binary::Sized_incremental_binary): Initialize
new data member.
(Sized_incremental_binary::add_copy_reloc): New function.
(Sized_incremental_binary::do_emit_copy_relocs): New function.
(Sized_incremental_binary::Copy_reloc): New struct.
(Sized_incremental_binary::Copy_relocs): New typedef.
(Sized_incremental_binary::copy_relocs_): New data member.
* symtab.cc (Symbol_table::add_from_incrobj): Change return type.
* symtab.h (Symbol_table::add_from_incrobj): Change return type.
* target.h (Sized_target::emit_copy_reloc): New function.
* x86_64.cc (Target_x86_64::emit_copy_reloc): New function.
* incremental-dump.cc (dump_incremental_inputs): Mask high-order
bit when checking got_type.
* incremental.cc (Sized_incremental_binary::setup_readers):
Store symbol table and string table locations; initialize bit vector
of file status flags.
(Sized_incremental_binary::do_reserve_layout): Set bit flag for
unchanged files.
(Sized_incremental_binary::do_process_got_plt): New function.
(Sized_incremental_binary::get_symtab_view): Use stored locations.
(Output_section_incremental_inputs::set_final_data_size): Record
file index for each input file.
(Output_section_incremental_inputs::write_got_plt): Store file index
instead of input entry offset for each GOT entry.
* incremental.h
(Incremental_input_entry::Incremental_input_entry): Initialize new
data member.
(Incremental_input_entry::set_offset): Store file index.
(Incremental_input_entry::get_file_index): New function.
(Incremental_input_entry::file_index_): New data member.
(Incremental_binary::process_got_plt): New function.
(Incremental_binary::do_process_got_plt): New function.
(Sized_incremental_binary::Sized_incremental_binary): Initialize new
data members.
(Sized_incremental_binary::~Sized_incremental_binary): New destructor.
(Sized_incremental_binary::set_file_is_unchanged): New function.
(Sized_incremental_binary::file_is_unchanged): New function.
(Sized_incremental_binary::do_process_got_plt): New function.
(Sized_incremental_binary::file_status_): New data member.
(Sized_incremental_binary::main_symtab_loc_): New data member.
(Sized_incremental_binary::main_strtab_loc_): New data member.
* output.cc (Output_data_got::Got_entry::write): Add case
RESERVED_CODE.
(Output_data_got::add_global): Call add_got_entry.
(Output_data_got::add_global_plt): Likewise.
(Output_data_got::add_global_with_rel): Likewise.
(Output_data_got::add_global_with_rela): Likewise.
(Output_data_got::add_global_pair_with_rel): Call add_got_entry_pair.
(Output_data_got::add_global_pair_with_rela): Likewise.
(Output_data_got::add_local): Call add_got_entry.
(Output_data_got::add_local_plt): Likewise.
(Output_data_got::add_local_with_rel): Likewise.
(Output_data_got::add_local_with_rela): Likewise.
(Output_data_got::add_local_pair_with_rel): Call add_got_entry_pair.
(Output_data_got::add_local_pair_with_rela): Likewise.
(Output_data_got::reserve_slot): New function.
(Output_data_got::reserve_slot_for_global): New function.
(Output_data_got::add_got_entry): New function.
(Output_data_got::add_got_entry_pair): New function.
(Output_section::add_output_section_data): Edit FIXME.
* output.h
(Output_section_data_build::Output_section_data_build): New
constructor with size parameter.
(Output_data_space::Output_data_space): Likewise.
(Output_data_got::Output_data_got): Initialize new data member; new
constructor with size parameter.
(Output_data_got::add_constant): Call add_got_entry.
(Output_data_got::reserve_slot): New function.
(Output_data_got::reserve_slot_for_global): New function.
(class Output_data_got::Got_entry): Add RESERVED_CODE.
(Output_data_got::add_got_entry): New function.
(Output_data_got::add_got_entry_pair): New function.
(Output_data_got::free_list_): New data member.
* target.h (Sized_target::init_got_plt_for_update): New function.
(Sized_target::register_global_plt_entry): New function.
* x86_64.cc (Output_data_plt_x86_64::Output_data_plt_x86_64):
Initialize new data member; call init; add constructor with PLT count.
(Output_data_plt_x86_64::init): New function.
(Output_data_plt_x86_64::add_relocation): New function.
(Output_data_plt_x86_64::reserve_slot): New function.
(Output_data_plt_x86_64::free_list_): New data member.
(Target_x86_64::init_got_plt_for_update): New function.
(Target_x86_64::register_global_plt_entry): New function.
(Output_data_plt_x86_64::add_entry): Allocate from free list for
incremental updates.
(Output_data_plt_x86_64::add_relocation): New function.
* testsuite/object_unittest.cc (Object_test): Set default options.
report_object.
(Add_archive_symbols::run): Track argument serial numbers.
(Lib_group::include_member): Likewise.
(Add_lib_group_symbols::run): Adjust call to report_archive_begin.
* archive.h (Incremental_archive_entry::Archive_member):
Initialize arg_serial_.
(Archive_member::arg_serial_): New data member.
* dynobj.cc (Dynobj::Dynobj): Allow input_file_ to be NULL.
(Sized_dynobj::do_add_symbols): Track symbols when doing an
incremental link.
(Sized_dynobj::do_for_all_local_got_entries): New function.
* dynobj.h: (Sized_dynobj::do_for_all_local_got_entries): New
function.
* fileread.cc (get_mtime): New function.
* fileread.h (get_mtime): New function.
* gold.cc (queue_initial_tasks): Check for incremental update.
(process_incremental_input): New function.
(queue_middle_tasks): Don't force valid target for incremental
update.
* incremental-dump.cc (find_input_containing_global): Adjust
size of symbol info entry.
(dump_incremental_inputs): Dump argument serial number and
in_system_directory flag; bias shndx by 1; print symbol names
when dumping per-file symbol lists; use new symbol info readers.
* incremental.cc
(Output_section_incremental_inputs:update_data_size): New function.
(Sized_incremental_binary::setup_readers): Setup input readers
for each input file; build maps for files added from libraries
and scripts.
(Sized_incremental_binary::check_input_args): New function.
(Sized_incremental_binary::do_check_inputs): Build map of argument
serial numbers to input arguments.
(Sized_incremental_binary::do_file_has_changed): Rename
do_file_is_unchanged to this; compare file modification times.
(Sized_incremental_binary::do_init_layout): New function.
(Sized_incremental_binary::do_reserve_layout): New function.
(Sized_incremental_binary::do_get_input_reader): Remove.
(Sized_incremental_binary::get_symtab_view): New function.
(Incremental_checker::can_incrementally_link_output_file): Remove.
(Incremental_inputs::report_command_line): Exclude --debug options.
(Incremental_inputs::report_archive_begin): Add parameter; track
argument serial numbers; don't put input file entry for archive
before archive members.
(Incremental_inputs::report_archive_end): Put input file entry
for archive after archive members.
(Incremental_inputs::report_object): Add parameter; track argument
serial numbers and in_system_directory flag.
(Incremental_inputs::report_script): Add parameter; track argument
serial numbers.
(Output_section_incremental_inputs::set_final_data_size): Adjust
size of symbol info entry; check for forwarding symbols.
(Output_section_incremental_inputs::write_input_files): Write
in_system_directory flag and argument serial number.
(Output_section_incremental_inputs::write_info_blocks): Map section
indices between incremental info and original input file; store
input section index for each symbol.
(class Local_got_offset_visitor): Derive from Got_offset_list::Visitor;
change operator() to visit().
(class Global_got_offset_visitor): Likewise.
(class Global_symbol_visitor_got_plt):
(Output_section_incremental_inputs::write_got_plt): Use new visitor
classes.
(Sized_incr_relobj::Sized_incr_relobj): New constructor.
(Sized_incr_relobj::do_read_symbols): New function.
(Sized_incr_relobj::do_layout): New function.
(Sized_incr_relobj::do_layout_deferred_sections): New function.
(Sized_incr_relobj::do_add_symbols): New function.
(Sized_incr_relobj::do_should_include_member): New function.
(Sized_incr_relobj::do_for_all_global_symbols): New function.
(Sized_incr_relobj::do_for_all_local_got_entries): New function.
(Sized_incr_relobj::do_section_size): New function.
(Sized_incr_relobj::do_section_name): New function.
(Sized_incr_relobj::do_section_contents): New function.
(Sized_incr_relobj::do_section_flags): New function.
(Sized_incr_relobj::do_section_entsize): New function.
(Sized_incr_relobj::do_section_address): New function.
(Sized_incr_relobj::do_section_type): New function.
(Sized_incr_relobj::do_section_link): New function.
(Sized_incr_relobj::do_section_info): New function.
(Sized_incr_relobj::do_section_addralign): New function.
(Sized_incr_relobj::do_initialize_xindex): New function.
(Sized_incr_relobj::do_get_global_symbol_counts): New function.
(Sized_incr_relobj::do_read_relocs): New function.
(Sized_incr_relobj::do_gc_process_relocs): New function.
(Sized_incr_relobj::do_scan_relocs): New function.
(Sized_incr_relobj::do_count_local_symbols): New function.
(Sized_incr_relobj::do_finalize_local_symbols): New function.
(Sized_incr_relobj::do_set_local_dynsym_indexes): New function.
(Sized_incr_relobj::do_set_local_dynsym_offset): New function.
(Sized_incr_relobj::do_relocate): New function.
(Sized_incr_relobj::do_set_section_offset): New function.
(Sized_incr_dynobj::Sized_incr_dynobj): New function.
(Sized_incr_dynobj::do_read_symbols): New function.
(Sized_incr_dynobj::do_layout): New function.
(Sized_incr_dynobj::do_add_symbols): New function.
(Sized_incr_dynobj::do_should_include_member): New function.
(Sized_incr_dynobj::do_for_all_global_symbols): New function.
(Sized_incr_dynobj::do_for_all_local_got_entries): New function.
(Sized_incr_dynobj::do_section_size): New function.
(Sized_incr_dynobj::do_section_name): New function.
(Sized_incr_dynobj::do_section_contents): New function.
(Sized_incr_dynobj::do_section_flags): New function.
(Sized_incr_dynobj::do_section_entsize): New function.
(Sized_incr_dynobj::do_section_address): New function.
(Sized_incr_dynobj::do_section_type): New function.
(Sized_incr_dynobj::do_section_link): New function.
(Sized_incr_dynobj::do_section_info): New function.
(Sized_incr_dynobj::do_section_addralign): New function.
(Sized_incr_dynobj::do_initialize_xindex): New function.
(Sized_incr_dynobj::do_get_global_symbol_counts): New function.
(make_sized_incremental_object): New function.
(Incremental_library::copy_unused_symbols): New function.
(Incremental_library::do_for_all_unused_symbols): New function.
* incremental.h (enum Incremental_input_flags): New type.
(class Incremental_checker): Remove.
(Incremental_input_entry::Incremental_input_entry): Add argument
serial number.
(Incremental_input_entry::arg_serial): New function.
(Incremental_input_entry::set_is_in_system_directory): New function.
(Incremental_input_entry::is_in_system_directory): New function.
(Incremental_input_entry::arg_serial_): New data member.
(Incremental_input_entry::is_in_system_directory_): New data member.
(class Script_info): Move here from script.h.
(Script_info::Script_info): Add filename parameter.
(Script_info::filename): New function.
(Script_info::filename_): New data member.
(Incremental_script_entry::Incremental_script_entry): Add argument
serial number.
(Incremental_object_entry::Incremental_object_entry): Likewise.
(Incremental_object_entry::add_input_section): Build list of input
sections with map to original shndx.
(Incremental_object_entry::get_input_section_index): New function.
(Incremental_object_entry::shndx_): New data member.
(Incremental_object_entry::name_key_): Rename; adjust all refs.
(Incremental_object_entry::sh_size_): Rename; adjust all refs.
(Incremental_archive_entry::Incremental_archive_entry): Add argument
serial number.
(Incremental_inputs::report_archive_begin): Likewise.
(Incremental_inputs::report_object): Likewise.
(Incremental_inputs::report_script): Likewise.
(class Incremental_global_symbol_reader): New class.
(Incremental_input_entry_reader::Incremental_input_entry_reader): Read
and store flags and input file type.
(Incremental_input_entry_reader::arg_serial): New function.
(Incremental_input_entry_reader::type): Extract type from flags.
(Incremental_input_entry_reader::is_in_system_directory): New function.
(Incremental_input_entry_reader::get_input_section_count): Call
accessor function for type.
(Incremental_input_entry_reader::get_symbol_offset): Call accessor
function for type; adjust size of global symbol entry.
(Incremental_input_entry_reader::get_global_symbol_count): Call
accessor function for type.
(Incremental_input_entry_reader::get_object_count): Likewise.
(Incremental_input_entry_reader::get_object_offset): Likewise.
(Incremental_input_entry_reader::get_member_count): Likewise.
(Incremental_input_entry_reader::get_unused_symbol_count): Likewise.
(Incremental_input_entry_reader::get_member_offset): Likewise.
(Incremental_input_entry_reader::get_unused_symbol): Likewise.
(Incremental_input_entry_reader::Global_symbol_info): Remove.
(Incremental_input_entry_reader::get_global_symbol_info): Remove.
(Incremental_input_entry_reader::get_global_symbol_reader): New
function.
(Incremental_input_entry_reader::get_output_symbol_index): New
function.
(Incremental_input_entry_reader::type_): Remove.
(Incremental_input_entry_reader::flags_): New data member.
(Incremental_inputs_reader::input_file_offset): New function.
(Incremental_inputs_reader::input_file_index): New function.
(Incremental_inputs_reader::input_file): Call input_file_offset.
(Incremental_inputs_reader::input_file_at_offset): New function.
(Incremental_relocs_reader::get_r_type): Reformat.
(Incremental_relocs_reader::get_r_shndx): Reformat.
(Incremental_relocs_reader::get_r_offset): Reformat.
(Incremental_relocs_reader::data): New function.
(Incremental_binary::Incremental_binary): Initialize new data members.
(Incremental_binary::check_inputs): Add cmdline parameter.
(Incremental_binary::file_is_unchanged): Remove.
(Input_reader::arg_serial): New function.
(Input_reader::get_unused_symbol_count): New function.
(Input_reader::get_unused_symbol): New function.
(Input_reader::do_arg_serial): New function.
(Input_reader::do_get_unused_symbol_count): New function.
(Input_reader::do_get_unused_symbol): New function.
(Incremental_binary::input_file_count): New function.
(Incremental_binary::get_input_reader): Change signature to use
index instead of filename.
(Incremental_binary::file_has_changed): New function.
(Incremental_binary::get_input_argument): New function.
(Incremental_binary::get_library): New function.
(Incremental_binary::get_script_info): New function.
(Incremental_binary::init_layout): New function.
(Incremental_binary::reserve_layout): New function.
(Incremental_binary::output_file): New function.
(Incremental_binary::do_check_inputs): New function.
(Incremental_binary::do_file_is_unchanged): Remove.
(Incremental_binary::do_file_has_changed): New function.
(Incremental_binary::do_init_layout): New function.
(Incremental_binary::do_reserve_layout): New function.
(Incremental_binary::do_input_file_count): New function.
(Incremental_binary::do_get_input_reader): Change signature.
(Incremental_binary::input_args_map_): New data member.
(Incremental_binary::library_map_): New data member.
(Incremental_binary::script_map_): New data member.
(Sized_incremental_binary::Sized_incremental_binary): Initialize
new data members.
(Sized_incremental_binary::output_section): New function.
(Sized_incremental_binary::inputs_reader): Add const.
(Sized_incremental_binary::symtab_reader): Add const.
(Sized_incremental_binary::relocs_reader): Add const.
(Sized_incremental_binary::got_plt_reader): Add const.
(Sized_incremental_binary::get_symtab_view): New function.
(Sized_incremental_binary::Inputs_reader): New typedef.
(Sized_incremental_binary::Input_entry_reader): New typedef.
(Sized_incremental_binary::do_check_inputs): Add cmdline parameter.
(Sized_incremental_binary::do_file_is_unchanged): Remove.
(Sized_incremental_binary::do_file_has_changed): New function.
(Sized_incremental_binary::do_init_layout): New function.
(Sized_incremental_binary::do_reserve_layout): New function.
(Sized_input_reader::Inputs_reader): Remove.
(Sized_input_reader::Input_entry_reader): Remove.
(Sized_input_reader::do_arg_serial): New function.
(Sized_input_reader::do_get_unused_symbol_count): New function.
(Sized_input_reader::do_get_unused_symbol): New function.
(Sized_incremental_binary::do_input_file_count): New function.
(Sized_incremental_binary::do_get_input_reader): Change signature;
use index instead of filename.
(Sized_incremental_binary::section_map_): New data member.
(Sized_incremental_binary::input_entry_readers_): New data member.
(class Sized_incr_relobj): New class.
(class Sized_incr_dynobj): New class.
(make_sized_incremental_object): New function.
(class Incremental_library): New class.
* layout.cc (Free_list::num_lists): New static data member.
(Free_list::num_nodes): New static data member.
(Free_list::num_removes): New static data member.
(Free_list::num_remove_visits): New static data member.
(Free_list::num_allocates): New static data member.
(Free_list::num_allocate_visits): New static data member.
(Free_list::init): New function.
(Free_list::remove): New function.
(Free_list::allocate): New function.
(Free_list::dump): New function.
(Free_list::print_stats): New function.
(Layout_task_runner::run): Resize output file for incremental updates.
(Layout::Layout): Initialize new data members.
(Layout::set_incremental_base): New function.
(Layout::init_fixed_output_section): New function.
(Layout::layout_eh_frame): Do not build .eh_frame_hdr section for
incremental updates.
(Layout::create_gold_note): Do not create gold note section for
incremental updates.
(Layout::set_segment_offsets): Do not recalculate RELRO alignment
for incremental updates.
(Layout::set_section_offsets): For incremental updates, allocate space
from free list.
(Layout::create_symtab_sections): Layout with offsets relative to
start of section; for incremental updates, allocate space from free
list.
(Layout::create_shdrs): For incremental updates, allocate space from
free list.
(Layout::finish_dynamic_section): For incremental updates, do not
check --as-needed (fixed in subsequent patch).
* layout.h (class Free_list): New class.
(Layout::set_incremental_base): New function.
(Layout::incremental_base): New function.
(Layout::init_fixed_output_section): New function.
(Layout::allocate): New function.
(Layout::incremental_base_): New data member.
(Layout::free_list_): New data member.
* main.cc (main): Print Free_list statistics.
* object.cc (Relobj::finalize_incremental_relocs): Add
clear_counts parameter; clear counts only when clear_counts is set.
(Sized_relobj::Sized_relobj): Initialize new base class.
(Sized_relobj::do_layout): Don't report special sections.
(Sized_relobj::do_for_all_local_got_entries): New function.
(Sized_relobj::write_local_symbols): Add symtab_off parameter; add
symtab_off to all symbol table offsets.
(Sized_relobj::do_get_global_symbol_counts): Add typename keyword.
* object.h (class Got_offset_list): Move to top of file.
(Object::Object): Allow case where input_file == NULL.
(Object::~Object): Likewise.
(Object::input_file): Assert that input_file != NULL.
(Object::lock): Allow case where input_file == NULL.
(Object::unlock): Likewise.
(Object::is_locked): Likewise.
(Object::token): Likewise.
(Object::release): Likewise.
(Object::is_incremental): New function.
(Object::get_mtime): New function.
(Object::for_all_local_got_entries): New function.
(Object::clear_view_cache_marks): Allow case where input_file == NULL.
(Object::set_is_in_system_directory): New function.
(Object::is_in_system_directory): New function.
(Object::do_is_incremental): New function.
(Object::do_get_mtime): New function.
(Object::do_for_all_local_got_entries): New function.
(Object::is_in_system_directory_): New data member.
(Relobj::finalize_incremental_relocs): Add clear_counts parameter.
(class Sized_relobj_base): New class.
(class Sized_relobj): Derive from Sized_relobj_base.
(class Sized_relobj::Symbols): Redeclare from base class.
(class Sized_relobj::local_got_offset_list): Remove.
(class Sized_relobj::Output_sections): Redeclare from base class.
(class Sized_relobj::do_for_all_local_got_entries): New function.
(class Sized_relobj::write_local_symbols): Add offset parameter.
(class Sized_relobj::local_symbol_offset_): Update comment.
(class Sized_relobj::local_dynsym_offset_): Update comment.
* options.cc (Input_arguments::add_file): Remove const.
* options.h (Input_file_argument::Input_file_argument):
Initialize arg_serial_ (all constructors).
(Input_file_argument::set_arg_serial): New function.
(Input_file_argument::arg_serial): New function.
(Input_file_argument::arg_serial_): New data member.
(Input_arguments::Input_arguments): Initialize file_count_.
(Input_arguments::add_file): Remove const.
(Input_arguments::number_of_input_files): New function.
(Input_arguments::file_count_): New data member.
(Command_line::number_of_input_files): Call
Input_arguments::number_of_input_files.
* output.cc (Output_segment_headers::Output_segment_headers):
Set current size.
(Output_section::Input_section::current_data_size): New function.
(Output_section::Output_section): Initialize new data members.
(Output_section::add_input_section): Don't do merge sections for
an incremental link; allocate space from free list for an
incremental update.
(Output_section::add_output_section_data): Allocate space from
free list for an incremental update.
(Output_section::update_data_size): New function.
(Output_section::set_fixed_layout): New function.
(Output_section::reserve): New function.
(Output_segment::set_section_addresses): Remove const.
(Output_segment::set_section_list_addresses): Remove const; allocate
space from free list for an incremental update.
(Output_segment::set_offset): Adjust size of RELRO segment for an
incremental update.
* output.h (Output_data::current_data_size): Move here from
child classes.
(Output_data::pre_finalize_data_size): New function.
(Output_data::update_data_size): New function.
(Output_section_headers::update_data_size): new function.
(Output_section_data_build::current_data_size): Move to Output_data.
(Output_data_strtab::update_data_size): New function.
(Output_section::current_data_size): Move to Output_data.
(Output_section::set_fixed_layout): New function.
(Output_section::has_fixed_layout): New function.
(Output_section::reserve): New function.
(Output_section::update_data_size): New function.
(Output_section::has_fixed_layout_): New data member.
(Output_section::free_list_): New data member.
(Output_segment::set_section_addresses): Remove const.
(Output_segment::set_section_list_addresses): Remove const.
* plugin.cc (Sized_pluginobj::do_for_all_local_got_entries):
New function.
* plugin.h (Sized_pluginobj::do_for_all_local_got_entries):
New function.
* readsyms.cc (Read_symbols::do_read_symbols): Add library
parameter when calling Add_symbols constructor; store argument
serial number for members of a lib group.
(Add_symbols::locks): Allow case where token == NULL.
(Add_symbols::run): Report libraries denoted by --start-lib/--end-lib.
(Read_member::~Read_member): New function.
(Read_member::is_runnable): New function.
(Read_member::locks): New function.
(Read_member::run): New function.
(Check_script::~Check_script): New function.
(Check_script::is_runnable): New function.
(Check_script::locks): New function.
(Check_script::run): New function.
(Check_library::~Check_library): New function.
(Check_library::is_runnable): New function.
(Check_library::locks): New function.
(Check_library::run): New function.
* readsyms.h (Add_symbols::Add_symbols): Add library parameter.
(Add_symbols::library_): New data member.
(class Read_member): New class.
(class Check_script): New class.
(class Check_library): New class.
* reloc.cc (Read_relocs::is_runnable): Allow case where
token == NULL.
(Read_relocs::locks): Likewise.
(Scan_relocs::locks): Likewise.
(Relocate_task::locks): Likewise.
(Sized_relobj::do_scan_relocs): Tell finalize_incremental_relocs
to clear counters.
(Sized_relobj::incremental_relocs_scan): Fix comment.
(Sized_relobj::do_relocate): Pass output file offset to
write_local_symbols.
(Sized_relobj::incremental_relocs_write_reltype): Use reloc_size
from class declaration.
* script.cc (read_input_script): Allocate Script_info; pass
argument serial number to report_script.
* script.h (class Script_info): Move to incremental.h.
* symtab.cc (Symbol_table::add_from_incrobj): New function.
* symtab.h (Symbol_table::add_from_incrobj): New function.
(Symbol_table::set_file_offset): New function.
* copy-relocs.cc (Copy_relocs::emit_copy_reloc): Hold a lock on the
object when reading from the file.
* gold.cc (queue_middle_tasks): Hold a lock on the object when doing
second layout pass.
* icf.cc (preprocess_for_unique_sections): Hold a lock on the object
when reading section contents.
(get_section_contents): Likewise.
(icf::find_identical_sections): Likewise.
* mapfile.cc (Mapfile::print_discarded_sections): Hold a lock on the
object when reading from the file.
* plugin.cc (Plugin_manager::layout_deferred_objects): Hold a lock on
the object when doing deferred section layout.
(debug_string_to_enum): Add DEBUG_INCREMENTAL).
* gold.cc (queue_initial_tasks): Check parameters for incremental link
mode.
* incremental.cc (report_command_line): Ignore all forms of
--incremental.
* layout.cc (Layout::Layout): Check parameters for incremental link
mode.
* options.cc (General_options::parse_incremental): New function.
(General_options::parse_no_incremental): New function.
(General_options::parse_incremental_full): New function.
(General_options::parse_incremental_update): New function.
(General_options::incremental_mode_): New data member.
(General_options::finalize): Check incremental_mode_.
* options.h (General_options): Update help text for --incremental.
Add --no-incremental, --incremental-full, --incremental-update.
(General_options::Incremental_mode): New enum type.
(General_options::incremental_mode): New function.
(General_options::incremental_mode_): New data member.
* parameters.cc (Parameters::incremental_mode_): New data member.
(Parameters::set_options): Set incremental_mode_.
(Parameters::set_incremental_full): New function.
(Parameters::incremental): New function.
(Parameters::incremental_update): New function.
(set_parameters_incremental_full): New function.
* parameters.h (Parameters::set_incremental_full): New function.
(Parameters::incremental): New function.
(Parameters::incremental_update): New function.
(Parameters::incremental_mode_): New data member.
(set_parameters_incremental_full): New function.
* plugin.cc (Plugin_manager::add_input_file): Check parameters for
incremental link mode.
* reloc.cc (Sized_relobj::do_read_relocs): Likewise.
(Sized_relobj::do_relocate_sections): Likewise.
* testsuite/Makefile.am (incremental_test): Use --incremental-full
option.
* testsuite/Makefile.in: Regenerate.
* testsuite/incremental_test.sh: Filter all forms of --incremental.
* arm.cc (Arm_output_section::fix_exidx_coverage): Mark object
for local symbol recounting if we remove a section due to ICF.
* gold.cc (queue_middle_gc_tasks): Create a dummy blocker if
there are no regular objects in input.
* arm.cc: Replace "endianity" with "endianness" in comments.
(Arm_exidx_cantunwind): Ditto.
(Arm_relobj::Arm_relobj): Initialize merge_flags_and_attribures.
(Arm_relobj::merge_flags_and_attributes): New method.
(Arm_relobj::merge_flags_and_attributes_): New data member.
(Arm_exidx_cantunwind::do_fixed_endian_write): Fix formatting.
(Arm_relobj::scan_sections_for_stubs): Ditto.
(Arm_relobj::do_read_symbols): Check to see if we really want to
merge processor-specific flags and attributes. Exit early if
an object is empty except for section names and the undefined symbol.
(Target_arm::do_finalize_sections): Move check for ELF format to
Arm_relobj::do_read_symbols. Merge processor specific flags and
attributes from a regular object only when we have determined that
it is aapropriate. Do not create an .ARM.attributes section in
output if there is no regular input object.
(Target_arm::merge_processor_specific_flags): Check
--warn-mismatch before printing any error.
(Target_arm::merge_object_attributes): Ditto.
* gold.cc (queue_middle_tasks): Handle the case in which there is
no regular object in input.
* options.cc (General_options::parse_EB): New method.
(General_options::parse_EL): Same.
(General_options::General_options): Initialize endianness_.
* options.h (-EB, -EL, -no-pipeline-knowledge, -p, --warn-mismatch):
New options.
(General_options::Endianness): New enum.
(General_options::endianness): New method.
(General_options::endianness_): New data member.
* parameters.cc (Parameters::set_options): Check target endianness.
(Parameters::set_target_once): Ditto.
(Parameters::check_target_endianness): New method.
(parameters_force_valid_target): If either -EL or -EB is specified,
use it to define endianness of default target.
* parameters.h (Parameters::check_target_endianness): New method
declaration.
* target.h (class Target): Change "endianity" to "endianness"
in comments.
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.
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.
* 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.
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.
