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Re: [PATCH][GOLD] Add support for relaxation.
"Doug Kwan (éæå)" <dougkwan@google.com> writes:
> 2009-09-16 Doug Kwan <dougkwan@google.com>
>
> * debug.h (DEBUG_RELAXATION): New constant.
> (DEBUG_ALL): Add DEBUG_RELAXATION.
> (debug_string_to_enum): Add relaxation debug option.
> * layout.cc
> (Layout::Relaxation_debug_check::check_output_data_for_reset_values,
> Layout::Relaxation_debug_check::read_sections,
> Layout::Relaxation_debug_check::read_sections): New method definitions.
> (Layout::Layout): Initialize data members
> record_output_section_data_from_scrips_,
> script_output_section_data_list_ and relaxation_debug_check_.
> (Layout::save_segments, Layout::restore_segments,
> Layout::clean_up_after_relaxation, Layout::prepare_for_relaxation,
> Layout::relaxation_loop_body): New method definitions.
> (Layout::finalize): Support relaxation. Move section layout code to
> Layout::relaxation_loop_body.
> (Layout::set_asection_address_from_script): Move code for orphan
> section placement out.
> (Layout::place_orphan_sections_in_script): New method definition.
> * layout.h (Output_segment_headers, Output_file_header):
> New forward class declarations.
> (Layout::~Layout): Define.
> (Layout::new_output_section_data_from_script): New method definition.
> (Layout::place_orphan_sections_in_script): New method declaration.
> (Layout::Segment_states): New type declaration.
> (Layout::save_segments, Layout::restore_segments,
> Layout::clean_up_after_relaxation, Layout::prepare_for_relaxation,
> Layout::relaxation_loop_body): New method declarations.
> (Layout::Output_section_data_list): New type declaration.
> (Layout::Relaxation_debug_check): New class definition.
> (Layout::record_output_section_data_from_script_,
> Layout::script_output_section_data_list_, Layout::segment_states_,
> Layout::relaxation_debug_check_): New data members.
> * output.cc: (Output_section_headers::do_size): New method definition.
> (Output_section_headers::Output_section_headers): Move size
> computation to Output_section_headers::do_size.
> (Output_segment_headers::do_size): New method definition.
> (Output_file_header::Output_file_header): Move size computation to
> Output_file_header::do_size and call it.
> (Output_file_header::do_size): New method definition.
> (Output_data_group::Output_data_group): Adjust call to
> Output_section_data.
> (Output_data_dynamic::set_final_data_size): Add DT_NULL tag only once.
> (Output_symtab_xindex::do_write): Add array bound check.
> (Output_section::Input_section::print_to_mapfile): Handle
> RELAXED_INPUT_SECTION_CODE.
> (Output_section::Output_section): Initialize data member checkpoint_.
> (Output_section::~Output_section): Delete checkpoint object pointed
> by checkpoint_.
> (Output_section::add_input_section): Always add an Input_section if
> relaxing.
> (Output_section::add_merge_input_section): Add assert.
> (Output_section::relax_input_section): New method definition.
> (Output_section::set_final_data_size): Set load address to zero for
> an unallocated section.
> (Output_section::do_address_and_file_offset_have_reset_values):
> New method definition.
> (Output_section::Input_section_sort_enty::Input_section_sort_enty):
> Handle relaxed input section.
> (Output_section::sort_attached_input_sections): Checkpoint input
> section list lazily.
> (Output_section::get_input_sections): Change type of input_sections to
> list of Simple_input_section pointers. Checkpoint input section list
> lazily. Also handle relaxed input sections.
> (Output_section::add_input_section_for_script): Take a reference to
> a Simple_input_section object instead of Relobj pointer and section
> index as parameter. Handle relaxed input sections.
> (Output_section::save_states, Output_section::restore_states): New
> method definitions.
> * output.h (Output_data::Output_data): Initialize is_data_size_fixed_.
> (Output_data::is_data_size_fixed): New method definition.
> (Output_data::reset_addresss_and_file_offset): Do not reset data size
> if it is fixed.
> (Output_data::address_and_file_offset_have_reset_values): New method
> definition.
> (Output_data::do_address_and_file_offset_have_reset_values): New method
> definition.
> (Output_data::set_data_size): Check that data size is not fixed.
> (Output_data::fix_data_size): New method definition.
> (Output_data::is_data_size_fixed_): New data member.
> (Output_section_headers::set_final_data_size): New method definition.
> (Output_section_headers::do_size): New method declaration.
> (Output_segment_headers::set_final_data_size): New method definition.
> (Output_segment_headers::do_size): New method declaration.
> (Output_file_header::set_final_data_size)::New method definition.
> (Output_file_header::do_size)::New method declaration.
> (Output_section_data::Output_section_data): Add new parameter
> is_data_size_fixed and use it to fix data size.
> (Output_data_const::Output_data_const): Adjust call to base class
> constructor and fix data size.
> (Output_data_const_buffer::Output_data_const_buffer): Adjust call to
> base class constructor and fix data size.
> (Output_data_fixed_space::Output_data_fixed_space): Adjust call to
> base class constructor and fix data size.
> (Output_data_zero_fill::Output_data_zero_fill): Adjust call to base
> class constructor and fix data size.
> (Output_data_group::set_final_data_size): New method definition.
> (Output_data_dynamic::Dynamic_entry::tag): New method definition.
> (Output_symtab_xindex::Output_symtab_xindex): Adjust call to base
> class constructor and fix data size.
> (Output_relaxed_input_section): New class definition.
> (Output_section::Simple_input_section): New class definition.
> (Output_section::get_input_sections): Adjust parameter list.
> (Output_section::add_input_section_for_script): Same.
> (Output_section::save_states, Output_section::restore_states,
> Output_section::do_address_and_file_offset_have_reset_values,
> (Output_section::Input_section::Input_section): Handle
> RELAXED_INPUT_SECTION_CODE. Add new overload for
> Output_relaxed_input_section.
> (Output_section::Input_section::is_input_section,
> Output_section::Input_section::set_output_section): Handle relaxed
> input section.
> (Output_section::Input_section::is_relaxed_input_section,
> Output_section::Input_section::output_section_data,
> Output_section::Input_section::relaxed_input_section): New method
> definitions.
> (Output_section::Input_section::RELAXED_INPUT_SECTION_CODE): New enum
> value.
> (Output_section::Input_section::u1_): Update comments.
> (Output_section::Input_section::u2_): Add new union member poris.
> (Output_section::Checkpoint_output_section): New classs definition.
> (Output_section::relax_input_section): New method declaration.
> (Output_section::checkpoint_): New data member.
> (Output_segment): Update comments.
> (Output_segment::Output_segment): Un-privatize copy constructor.
> (Output_segment::operator=): Un-privatize.
> * script-sections.cc (Output_section_element::Input_section_list):
> Change element type to Output_section::Simple_input_section.
> (Output_section_element_dot_assignment::set_section_addresses):
> Register output section data for relaxation clean up.
> (Output_data_exression::Output_data_expression): Adjust call to base
> constructor to fix data size.
> (Output_section_element_data::set_section_addresses): Register
> Output_data_expression object for relaxation clean up.
> (struct Input_section_info): Replace Relobj pointer and section index
> pair with Output_section::Simple_input_section and Convert struct to a
> class.
> (Input_section_sorter::operator()): Adjust access to
> Input_section_info data member to use accessors.
> (Output_section_element_input::set_section_addresses): Use layout
> parameter. Adjust code to use Output_section::Simple_input_section
> and Input_secction_info classes. Register filler for relaxation
> clean up.
> (Orphan_output_section::set_section_addresses): Replace Relobj pointer
> and section index pair with Output_section::Simple_input_section
> class. Adjust code accordingly.
> (Phdrs_element::release_segment): New method definition.
> (Script_sections::attach_sections_using_phdrs_clause): Do not modify
> segment list.
> (Script_sections::release_segments): New method definition.
> * gold/script-sections.h (Script_sections::release_segments): New
> method declaration.
> * gold/target.h (Target::may_relax, Target::relax,
> Target::do_may_relax, Target::do_relax): New method definitions.
> +// Save information of SECTIONS to checking later.
s/to/for/ I think.
This is OK.
Thanks.
Ian