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cdc29364d1
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.
927 lines
25 KiB
C++
927 lines
25 KiB
C++
// readsyms.cc -- read input file symbols for gold
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// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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#include "gold.h"
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#include <cstring>
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#include "elfcpp.h"
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#include "options.h"
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#include "dirsearch.h"
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#include "symtab.h"
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#include "object.h"
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#include "archive.h"
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#include "script.h"
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#include "readsyms.h"
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#include "plugin.h"
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#include "layout.h"
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#include "incremental.h"
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namespace gold
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{
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// If we fail to open the object, then we won't create an Add_symbols
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// task. However, we still need to unblock the token, or else the
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// link won't proceed to generate more error messages. We can only
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// unblock tokens when the workqueue lock is held, so we need a dummy
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// task to do that. The dummy task has to maintain the right sequence
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// of blocks, so we need both this_blocker and next_blocker.
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class Unblock_token : public Task
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{
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public:
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Unblock_token(Task_token* this_blocker, Task_token* next_blocker)
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: this_blocker_(this_blocker), next_blocker_(next_blocker)
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{ }
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~Unblock_token()
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{
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if (this->this_blocker_ != NULL)
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delete this->this_blocker_;
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}
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Task_token*
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is_runnable()
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{
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if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
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return this->this_blocker_;
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return NULL;
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}
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void
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locks(Task_locker* tl)
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{ tl->add(this, this->next_blocker_); }
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void
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run(Workqueue*)
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{ }
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std::string
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get_name() const
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{ return "Unblock_token"; }
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private:
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Task_token* this_blocker_;
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Task_token* next_blocker_;
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};
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// Class read_symbols.
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Read_symbols::~Read_symbols()
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{
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// The this_blocker_ and next_blocker_ pointers are passed on to the
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// Add_symbols task.
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}
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// If appropriate, issue a warning about skipping an incompatible
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// file.
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void
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Read_symbols::incompatible_warning(const Input_argument* input_argument,
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const Input_file* input_file)
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{
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if (parameters->options().warn_search_mismatch())
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gold_warning("skipping incompatible %s while searching for %s",
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input_file->filename().c_str(),
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input_argument->file().name());
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}
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// Requeue a Read_symbols task to search for the next object with the
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// same name.
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void
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Read_symbols::requeue(Workqueue* workqueue, Input_objects* input_objects,
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Symbol_table* symtab, Layout* layout, Dirsearch* dirpath,
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int dirindex, Mapfile* mapfile,
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const Input_argument* input_argument,
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Input_group* input_group, Task_token* next_blocker)
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{
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// Bump the directory search index.
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++dirindex;
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// We don't need to worry about this_blocker, since we already
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// reached it. However, we are removing the blocker on next_blocker
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// because the calling task is completing. So we need to add a new
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// blocker. Since next_blocker may be shared by several tasks, we
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// need to increment the count with the workqueue lock held.
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workqueue->add_blocker(next_blocker);
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workqueue->queue(new Read_symbols(input_objects, symtab, layout, dirpath,
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dirindex, mapfile, input_argument,
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input_group, NULL, NULL, next_blocker));
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}
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// Return whether a Read_symbols task is runnable. We can read an
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// ordinary input file immediately. For an archive specified using
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// -l, we have to wait until the search path is complete.
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Task_token*
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Read_symbols::is_runnable()
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{
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if (this->input_argument_->is_file()
|
|
&& this->input_argument_->file().may_need_search()
|
|
&& this->dirpath_->token()->is_blocked())
|
|
return this->dirpath_->token();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// Return a Task_locker for a Read_symbols task. We don't need any
|
|
// locks here.
|
|
|
|
void
|
|
Read_symbols::locks(Task_locker* tl)
|
|
{
|
|
if (this->member_ != NULL)
|
|
tl->add(this, this->next_blocker_);
|
|
}
|
|
|
|
// Run a Read_symbols task.
|
|
|
|
void
|
|
Read_symbols::run(Workqueue* workqueue)
|
|
{
|
|
// If we didn't queue a new task, then we need to explicitly unblock
|
|
// the token.
|
|
if (!this->do_read_symbols(workqueue))
|
|
workqueue->queue_soon(new Unblock_token(this->this_blocker_,
|
|
this->next_blocker_));
|
|
}
|
|
|
|
// Handle a whole lib group. Other than collecting statistics, this just
|
|
// mimics what we do for regular object files in the command line.
|
|
|
|
bool
|
|
Read_symbols::do_whole_lib_group(Workqueue* workqueue)
|
|
{
|
|
const Input_file_lib* lib_group = this->input_argument_->lib();
|
|
|
|
++Lib_group::total_lib_groups;
|
|
|
|
Task_token* this_blocker = this->this_blocker_;
|
|
for (Input_file_lib::const_iterator i = lib_group->begin();
|
|
i != lib_group->end();
|
|
++i)
|
|
{
|
|
++Lib_group::total_members;
|
|
++Lib_group::total_members_loaded;
|
|
|
|
const Input_argument* arg = &*i;
|
|
|
|
Task_token* next_blocker;
|
|
if (i != lib_group->end() - 1)
|
|
{
|
|
next_blocker = new Task_token(true);
|
|
next_blocker->add_blocker();
|
|
}
|
|
else
|
|
next_blocker = this->next_blocker_;
|
|
|
|
workqueue->queue_soon(new Read_symbols(this->input_objects_,
|
|
this->symtab_, this->layout_,
|
|
this->dirpath_, this->dirindex_,
|
|
this->mapfile_, arg, NULL,
|
|
NULL, this_blocker, next_blocker));
|
|
this_blocker = next_blocker;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Handle a lib group. We set Read_symbols Tasks as usual, but have them
|
|
// just record the symbol data instead of adding the objects. We also start
|
|
// a Add_lib_group_symbols Task which runs after we've read all the symbols.
|
|
// In that task we process the members in a loop until we are done.
|
|
|
|
bool
|
|
Read_symbols::do_lib_group(Workqueue* workqueue)
|
|
{
|
|
const Input_file_lib* lib_group = this->input_argument_->lib();
|
|
|
|
if (lib_group->options().whole_archive())
|
|
return this->do_whole_lib_group(workqueue);
|
|
|
|
Lib_group* lib = new Lib_group(lib_group, this);
|
|
|
|
Add_lib_group_symbols* add_lib_group_symbols =
|
|
new Add_lib_group_symbols(this->symtab_, this->layout_,
|
|
this->input_objects_,
|
|
lib, this->next_blocker_);
|
|
|
|
|
|
Task_token* next_blocker = new Task_token(true);
|
|
int j = 0;
|
|
for (Input_file_lib::const_iterator i = lib_group->begin();
|
|
i != lib_group->end();
|
|
++i, ++j)
|
|
{
|
|
const Input_argument* arg = &*i;
|
|
Archive_member* m = lib->get_member(j);
|
|
|
|
next_blocker->add_blocker();
|
|
|
|
// Since this Read_symbols will not create an Add_symbols,
|
|
// just pass NULL as this_blocker.
|
|
workqueue->queue_soon(new Read_symbols(this->input_objects_,
|
|
this->symtab_, this->layout_,
|
|
this->dirpath_, this->dirindex_,
|
|
this->mapfile_, arg, NULL,
|
|
m, NULL, next_blocker));
|
|
}
|
|
|
|
add_lib_group_symbols->set_blocker(next_blocker, this->this_blocker_);
|
|
workqueue->queue_soon(add_lib_group_symbols);
|
|
|
|
return true;
|
|
}
|
|
|
|
// Open the file and read the symbols. Return true if a new task was
|
|
// queued, false if that could not happen due to some error.
|
|
|
|
bool
|
|
Read_symbols::do_read_symbols(Workqueue* workqueue)
|
|
{
|
|
if (this->input_argument_->is_group())
|
|
{
|
|
gold_assert(this->input_group_ == NULL);
|
|
this->do_group(workqueue);
|
|
return true;
|
|
}
|
|
|
|
if (this->input_argument_->is_lib())
|
|
return this->do_lib_group(workqueue);
|
|
|
|
Input_file* input_file = new Input_file(&this->input_argument_->file());
|
|
if (!input_file->open(*this->dirpath_, this, &this->dirindex_))
|
|
return false;
|
|
|
|
// Read enough of the file to pick up the entire ELF header.
|
|
|
|
off_t filesize = input_file->file().filesize();
|
|
|
|
if (filesize == 0)
|
|
{
|
|
gold_error(_("%s: file is empty"),
|
|
input_file->file().filename().c_str());
|
|
return false;
|
|
}
|
|
|
|
const unsigned char* ehdr;
|
|
int read_size;
|
|
bool is_elf = is_elf_object(input_file, 0, &ehdr, &read_size);
|
|
|
|
if (read_size >= Archive::sarmag)
|
|
{
|
|
bool is_thin_archive
|
|
= memcmp(ehdr, Archive::armagt, Archive::sarmag) == 0;
|
|
if (is_thin_archive
|
|
|| memcmp(ehdr, Archive::armag, Archive::sarmag) == 0)
|
|
{
|
|
// This is an archive.
|
|
Archive* arch = new Archive(this->input_argument_->file().name(),
|
|
input_file, is_thin_archive,
|
|
this->dirpath_, this);
|
|
arch->setup();
|
|
|
|
// Unlock the archive so it can be used in the next task.
|
|
arch->unlock(this);
|
|
|
|
workqueue->queue_next(new Add_archive_symbols(this->symtab_,
|
|
this->layout_,
|
|
this->input_objects_,
|
|
this->dirpath_,
|
|
this->dirindex_,
|
|
this->mapfile_,
|
|
this->input_argument_,
|
|
arch,
|
|
this->input_group_,
|
|
this->this_blocker_,
|
|
this->next_blocker_));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (parameters->options().has_plugins())
|
|
{
|
|
Pluginobj* obj = parameters->options().plugins()->claim_file(input_file,
|
|
0, filesize);
|
|
if (obj != NULL)
|
|
{
|
|
// The input file was claimed by a plugin, and its symbols
|
|
// have been provided by the plugin.
|
|
|
|
// We are done with the file at this point, so unlock it.
|
|
obj->unlock(this);
|
|
|
|
if (this->member_ != NULL)
|
|
{
|
|
this->member_->sd_ = NULL;
|
|
this->member_->obj_ = obj;
|
|
return true;
|
|
}
|
|
|
|
workqueue->queue_next(new Add_symbols(this->input_objects_,
|
|
this->symtab_,
|
|
this->layout_,
|
|
this->dirpath_,
|
|
this->dirindex_,
|
|
this->mapfile_,
|
|
this->input_argument_,
|
|
obj,
|
|
NULL,
|
|
NULL,
|
|
this->this_blocker_,
|
|
this->next_blocker_));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (is_elf)
|
|
{
|
|
// This is an ELF object.
|
|
|
|
bool unconfigured = false;
|
|
bool* punconfigured = (input_file->will_search_for()
|
|
? &unconfigured
|
|
: NULL);
|
|
Object* obj = make_elf_object(input_file->filename(),
|
|
input_file, 0, ehdr, read_size,
|
|
punconfigured);
|
|
if (obj == NULL)
|
|
{
|
|
if (unconfigured)
|
|
{
|
|
Read_symbols::incompatible_warning(this->input_argument_,
|
|
input_file);
|
|
input_file->file().release();
|
|
input_file->file().unlock(this);
|
|
delete input_file;
|
|
++this->dirindex_;
|
|
return this->do_read_symbols(workqueue);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Read_symbols_data* sd = new Read_symbols_data;
|
|
obj->read_symbols(sd);
|
|
|
|
// Opening the file locked it, so now we need to unlock it. We
|
|
// need to unlock it before queuing the Add_symbols task,
|
|
// because the workqueue doesn't know about our lock on the
|
|
// file. If we queue the Add_symbols task first, it will be
|
|
// stuck on the end of the file lock, but since the workqueue
|
|
// doesn't know about that lock, it will never release the
|
|
// Add_symbols task.
|
|
|
|
input_file->file().unlock(this);
|
|
|
|
if (this->member_ != NULL)
|
|
{
|
|
this->member_->sd_ = sd;
|
|
this->member_->obj_ = obj;
|
|
this->member_->arg_serial_ =
|
|
this->input_argument_->file().arg_serial();
|
|
return true;
|
|
}
|
|
|
|
// We use queue_next because everything is cached for this
|
|
// task to run right away if possible.
|
|
|
|
workqueue->queue_next(new Add_symbols(this->input_objects_,
|
|
this->symtab_, this->layout_,
|
|
this->dirpath_,
|
|
this->dirindex_,
|
|
this->mapfile_,
|
|
this->input_argument_,
|
|
obj,
|
|
NULL,
|
|
sd,
|
|
this->this_blocker_,
|
|
this->next_blocker_));
|
|
|
|
return true;
|
|
}
|
|
|
|
// Queue up a task to try to parse this file as a script. We use a
|
|
// separate task so that the script will be read in order with other
|
|
// objects named on the command line. Also so that we don't try to
|
|
// read multiple scripts simultaneously, which could lead to
|
|
// unpredictable changes to the General_options structure.
|
|
|
|
workqueue->queue_soon(new Read_script(this->symtab_,
|
|
this->layout_,
|
|
this->dirpath_,
|
|
this->dirindex_,
|
|
this->input_objects_,
|
|
this->mapfile_,
|
|
this->input_group_,
|
|
this->input_argument_,
|
|
input_file,
|
|
this->this_blocker_,
|
|
this->next_blocker_));
|
|
return true;
|
|
}
|
|
|
|
// Handle a group. We need to walk through the arguments over and
|
|
// over until we don't see any new undefined symbols. We do this by
|
|
// setting off Read_symbols Tasks as usual, but recording the archive
|
|
// entries instead of deleting them. We also start a Finish_group
|
|
// Task which runs after we've read all the symbols. In that task we
|
|
// process the archives in a loop until we are done.
|
|
|
|
void
|
|
Read_symbols::do_group(Workqueue* workqueue)
|
|
{
|
|
Input_group* input_group = new Input_group();
|
|
|
|
const Input_file_group* group = this->input_argument_->group();
|
|
Task_token* this_blocker = this->this_blocker_;
|
|
|
|
Finish_group* finish_group = new Finish_group(this->input_objects_,
|
|
this->symtab_,
|
|
this->layout_,
|
|
this->mapfile_,
|
|
input_group,
|
|
this->next_blocker_);
|
|
|
|
Task_token* next_blocker = new Task_token(true);
|
|
next_blocker->add_blocker();
|
|
workqueue->queue_soon(new Start_group(this->symtab_, finish_group,
|
|
this_blocker, next_blocker));
|
|
this_blocker = next_blocker;
|
|
|
|
for (Input_file_group::const_iterator p = group->begin();
|
|
p != group->end();
|
|
++p)
|
|
{
|
|
const Input_argument* arg = &*p;
|
|
gold_assert(arg->is_file());
|
|
|
|
next_blocker = new Task_token(true);
|
|
next_blocker->add_blocker();
|
|
workqueue->queue_soon(new Read_symbols(this->input_objects_,
|
|
this->symtab_, this->layout_,
|
|
this->dirpath_, this->dirindex_,
|
|
this->mapfile_, arg, input_group,
|
|
NULL, this_blocker, next_blocker));
|
|
this_blocker = next_blocker;
|
|
}
|
|
|
|
finish_group->set_blocker(this_blocker);
|
|
|
|
workqueue->queue_soon(finish_group);
|
|
}
|
|
|
|
// Return a debugging name for a Read_symbols task.
|
|
|
|
std::string
|
|
Read_symbols::get_name() const
|
|
{
|
|
if (this->input_argument_->is_group())
|
|
{
|
|
std::string ret("Read_symbols group (");
|
|
bool add_space = false;
|
|
const Input_file_group* group = this->input_argument_->group();
|
|
for (Input_file_group::const_iterator p = group->begin();
|
|
p != group->end();
|
|
++p)
|
|
{
|
|
if (add_space)
|
|
ret += ' ';
|
|
ret += p->file().name();
|
|
add_space = true;
|
|
}
|
|
return ret + ')';
|
|
}
|
|
else if (this->input_argument_->is_lib())
|
|
{
|
|
std::string ret("Read_symbols lib (");
|
|
bool add_space = false;
|
|
const Input_file_lib* lib = this->input_argument_->lib();
|
|
for (Input_file_lib::const_iterator p = lib->begin();
|
|
p != lib->end();
|
|
++p)
|
|
{
|
|
if (add_space)
|
|
ret += ' ';
|
|
ret += p->file().name();
|
|
add_space = true;
|
|
}
|
|
return ret + ')';
|
|
}
|
|
else
|
|
{
|
|
std::string ret("Read_symbols ");
|
|
if (this->input_argument_->file().is_lib())
|
|
ret += "-l";
|
|
else if (this->input_argument_->file().is_searched_file())
|
|
ret += "-l:";
|
|
ret += this->input_argument_->file().name();
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
// Class Add_symbols.
|
|
|
|
Add_symbols::~Add_symbols()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the next
|
|
// input file.
|
|
}
|
|
|
|
// We are blocked by this_blocker_. We block next_blocker_. We also
|
|
// lock the file.
|
|
|
|
Task_token*
|
|
Add_symbols::is_runnable()
|
|
{
|
|
if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
|
|
return this->this_blocker_;
|
|
if (this->object_->is_locked())
|
|
return this->object_->token();
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Add_symbols::locks(Task_locker* tl)
|
|
{
|
|
tl->add(this, this->next_blocker_);
|
|
Task_token* token = this->object_->token();
|
|
if (token != NULL)
|
|
tl->add(this, token);
|
|
}
|
|
|
|
// Add the symbols in the object to the symbol table.
|
|
|
|
void
|
|
Add_symbols::run(Workqueue*)
|
|
{
|
|
Pluginobj* pluginobj = this->object_->pluginobj();
|
|
if (pluginobj != NULL)
|
|
{
|
|
this->object_->add_symbols(this->symtab_, this->sd_, this->layout_);
|
|
return;
|
|
}
|
|
|
|
if (!this->input_objects_->add_object(this->object_))
|
|
{
|
|
gold_assert(this->sd_ != NULL);
|
|
delete this->sd_;
|
|
this->sd_ = NULL;
|
|
this->object_->release();
|
|
delete this->object_;
|
|
}
|
|
else
|
|
{
|
|
Incremental_inputs* incremental_inputs =
|
|
this->layout_->incremental_inputs();
|
|
if (incremental_inputs != NULL)
|
|
{
|
|
if (this->library_ != NULL && !this->library_->is_reported())
|
|
{
|
|
Incremental_binary* ibase = this->layout_->incremental_base();
|
|
gold_assert(ibase != NULL);
|
|
unsigned int lib_serial = this->library_->arg_serial();
|
|
unsigned int lib_index = this->library_->input_file_index();
|
|
Script_info* lib_script_info = ibase->get_script_info(lib_index);
|
|
incremental_inputs->report_archive_begin(this->library_,
|
|
lib_serial,
|
|
lib_script_info);
|
|
}
|
|
unsigned int arg_serial = this->input_argument_->file().arg_serial();
|
|
Script_info* script_info = this->input_argument_->script_info();
|
|
incremental_inputs->report_object(this->object_, arg_serial,
|
|
this->library_, script_info);
|
|
}
|
|
this->object_->layout(this->symtab_, this->layout_, this->sd_);
|
|
this->object_->add_symbols(this->symtab_, this->sd_, this->layout_);
|
|
delete this->sd_;
|
|
this->sd_ = NULL;
|
|
this->object_->release();
|
|
}
|
|
}
|
|
|
|
// Class Read_member.
|
|
|
|
Read_member::~Read_member()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the next
|
|
// input file.
|
|
}
|
|
|
|
// Return whether a Read_member task is runnable.
|
|
|
|
Task_token*
|
|
Read_member::is_runnable()
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Read_member::locks(Task_locker* tl)
|
|
{
|
|
tl->add(this, this->next_blocker_);
|
|
}
|
|
|
|
// Run a Read_member task.
|
|
|
|
void
|
|
Read_member::run(Workqueue*)
|
|
{
|
|
// This task doesn't need to do anything for now. The Read_symbols task
|
|
// that is queued for the archive library will cause the archive to be
|
|
// processed from scratch.
|
|
}
|
|
|
|
// Class Check_script.
|
|
|
|
Check_script::~Check_script()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the next
|
|
// input file.
|
|
}
|
|
|
|
// Return whether a Check_script task is runnable.
|
|
|
|
Task_token*
|
|
Check_script::is_runnable()
|
|
{
|
|
if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
|
|
return this->this_blocker_;
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Check_script::locks(Task_locker* tl)
|
|
{
|
|
tl->add(this, this->next_blocker_);
|
|
}
|
|
|
|
// Run a Check_script task.
|
|
|
|
void
|
|
Check_script::run(Workqueue*)
|
|
{
|
|
Incremental_inputs* incremental_inputs = this->layout_->incremental_inputs();
|
|
gold_assert(incremental_inputs != NULL);
|
|
unsigned int arg_serial = this->input_reader_->arg_serial();
|
|
Script_info* script_info =
|
|
this->ibase_->get_script_info(this->input_file_index_);
|
|
Timespec mtime = this->input_reader_->get_mtime();
|
|
incremental_inputs->report_script(script_info, arg_serial, mtime);
|
|
}
|
|
|
|
// Class Check_library.
|
|
|
|
Check_library::~Check_library()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the next
|
|
// input file.
|
|
}
|
|
|
|
// Return whether a Check_library task is runnable.
|
|
|
|
Task_token*
|
|
Check_library::is_runnable()
|
|
{
|
|
if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
|
|
return this->this_blocker_;
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Check_library::locks(Task_locker* tl)
|
|
{
|
|
tl->add(this, this->next_blocker_);
|
|
}
|
|
|
|
// Run a Check_library task.
|
|
|
|
void
|
|
Check_library::run(Workqueue*)
|
|
{
|
|
Incremental_inputs* incremental_inputs = this->layout_->incremental_inputs();
|
|
gold_assert(incremental_inputs != NULL);
|
|
Incremental_library* lib = this->ibase_->get_library(this->input_file_index_);
|
|
gold_assert(lib != NULL);
|
|
lib->copy_unused_symbols();
|
|
// FIXME: Check that unused symbols remain unused.
|
|
if (!lib->is_reported())
|
|
{
|
|
unsigned int lib_serial = lib->arg_serial();
|
|
unsigned int lib_index = lib->input_file_index();
|
|
Script_info* script_info = this->ibase_->get_script_info(lib_index);
|
|
incremental_inputs->report_archive_begin(lib, lib_serial, script_info);
|
|
}
|
|
incremental_inputs->report_archive_end(lib);
|
|
}
|
|
|
|
// Class Input_group.
|
|
|
|
// When we delete an Input_group we can delete the archive
|
|
// information.
|
|
|
|
Input_group::~Input_group()
|
|
{
|
|
for (Input_group::const_iterator p = this->begin();
|
|
p != this->end();
|
|
++p)
|
|
delete *p;
|
|
}
|
|
|
|
// Class Start_group.
|
|
|
|
Start_group::~Start_group()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the first
|
|
// file in the group.
|
|
}
|
|
|
|
// We need to wait for THIS_BLOCKER_ and unblock NEXT_BLOCKER_.
|
|
|
|
Task_token*
|
|
Start_group::is_runnable()
|
|
{
|
|
if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
|
|
return this->this_blocker_;
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Start_group::locks(Task_locker* tl)
|
|
{
|
|
tl->add(this, this->next_blocker_);
|
|
}
|
|
|
|
// Store the number of undefined symbols we see now.
|
|
|
|
void
|
|
Start_group::run(Workqueue*)
|
|
{
|
|
this->finish_group_->set_saw_undefined(this->symtab_->saw_undefined());
|
|
}
|
|
|
|
// Class Finish_group.
|
|
|
|
Finish_group::~Finish_group()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the next
|
|
// input file following the group.
|
|
}
|
|
|
|
// We need to wait for THIS_BLOCKER_ and unblock NEXT_BLOCKER_.
|
|
|
|
Task_token*
|
|
Finish_group::is_runnable()
|
|
{
|
|
if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
|
|
return this->this_blocker_;
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Finish_group::locks(Task_locker* tl)
|
|
{
|
|
tl->add(this, this->next_blocker_);
|
|
}
|
|
|
|
// Loop over the archives until there are no new undefined symbols.
|
|
|
|
void
|
|
Finish_group::run(Workqueue*)
|
|
{
|
|
size_t saw_undefined = this->saw_undefined_;
|
|
while (saw_undefined != this->symtab_->saw_undefined())
|
|
{
|
|
saw_undefined = this->symtab_->saw_undefined();
|
|
|
|
for (Input_group::const_iterator p = this->input_group_->begin();
|
|
p != this->input_group_->end();
|
|
++p)
|
|
{
|
|
Task_lock_obj<Archive> tl(this, *p);
|
|
|
|
(*p)->add_symbols(this->symtab_, this->layout_,
|
|
this->input_objects_, this->mapfile_);
|
|
}
|
|
}
|
|
|
|
// Now that we're done with the archives, record the incremental
|
|
// layout information.
|
|
for (Input_group::const_iterator p = this->input_group_->begin();
|
|
p != this->input_group_->end();
|
|
++p)
|
|
{
|
|
// For an incremental link, finish recording the layout information.
|
|
Incremental_inputs* incremental_inputs =
|
|
this->layout_->incremental_inputs();
|
|
if (incremental_inputs != NULL)
|
|
incremental_inputs->report_archive_end(*p);
|
|
}
|
|
|
|
if (parameters->options().has_plugins())
|
|
parameters->options().plugins()->save_input_group(this->input_group_);
|
|
else
|
|
delete this->input_group_;
|
|
}
|
|
|
|
// Class Read_script
|
|
|
|
Read_script::~Read_script()
|
|
{
|
|
if (this->this_blocker_ != NULL)
|
|
delete this->this_blocker_;
|
|
// next_blocker_ is deleted by the task associated with the next
|
|
// input file.
|
|
}
|
|
|
|
// We are blocked by this_blocker_.
|
|
|
|
Task_token*
|
|
Read_script::is_runnable()
|
|
{
|
|
if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
|
|
return this->this_blocker_;
|
|
return NULL;
|
|
}
|
|
|
|
// We don't unlock next_blocker_ here. If the script names any input
|
|
// files, then the last file will be responsible for unlocking it.
|
|
|
|
void
|
|
Read_script::locks(Task_locker*)
|
|
{
|
|
}
|
|
|
|
// Read the script, if it is a script.
|
|
|
|
void
|
|
Read_script::run(Workqueue* workqueue)
|
|
{
|
|
bool used_next_blocker;
|
|
if (!read_input_script(workqueue, this->symtab_, this->layout_,
|
|
this->dirpath_, this->dirindex_, this->input_objects_,
|
|
this->mapfile_, this->input_group_,
|
|
this->input_argument_, this->input_file_,
|
|
this->next_blocker_, &used_next_blocker))
|
|
{
|
|
// Here we have to handle any other input file types we need.
|
|
gold_error(_("%s: not an object or archive"),
|
|
this->input_file_->file().filename().c_str());
|
|
}
|
|
|
|
if (!used_next_blocker)
|
|
{
|
|
// Queue up a task to unlock next_blocker. We can't just unlock
|
|
// it here, as we don't hold the workqueue lock.
|
|
workqueue->queue_soon(new Unblock_token(NULL, this->next_blocker_));
|
|
}
|
|
}
|
|
|
|
// Return a debugging name for a Read_script task.
|
|
|
|
std::string
|
|
Read_script::get_name() const
|
|
{
|
|
std::string ret("Read_script ");
|
|
if (this->input_argument_->file().is_lib())
|
|
ret += "-l";
|
|
else if (this->input_argument_->file().is_searched_file())
|
|
ret += "-l:";
|
|
ret += this->input_argument_->file().name();
|
|
return ret;
|
|
}
|
|
|
|
} // End namespace gold.
|