binutils-gdb/gold/gold.cc

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// gold.cc -- main linker functions
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2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
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// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
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#include "gold.h"
#include <cstdlib>
#include <cstdio>
#include <cstring>
#include <unistd.h>
#include <algorithm>
#include "libiberty.h"
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#include "options.h"
#include "debug.h"
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#include "workqueue.h"
#include "dirsearch.h"
#include "readsyms.h"
#include "symtab.h"
#include "common.h"
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#include "object.h"
#include "layout.h"
#include "reloc.h"
#include "defstd.h"
Add plugin functionality for link-time optimization (LTO). include/: * plugin-api.h: New file. gold/: * configure.ac (plugins): Add --enable-plugins option. * configure: Regenerate. * config.in: Regenerate. * Makefile.am (LIBDL): New variable. (CCFILES): Add plugin.cc. (HFILES): Add plugin.h. (ldadd_var): Add LIBDL. * Makefile.in: Regenerate. * archive.cc: Include "plugin.h". (Archive::setup): Don't preread archive symbols when using a plugin. (Archive::get_file_and_offset): Add memsize parameter. Change callers. (Archive::get_elf_object_for_member): Call plugin hooks for claiming files. (Archive::include_member): Add symbols from plugin objects. * archive.h (Archive::get_file_and_offset): Add memsize parameter. * descriptors.cc (Descriptors::open): Check for file descriptors abandoned by plugins. (Descriptors::claim_for_plugin): New function. * descriptors.h (Descriptors::claim_for_plugin): New function. (Open_descriptor::is_claimed): New field. (claim_descriptor_for_plugin): New function. * fileread.cc (File_read::claim_for_plugin): New function. * fileread.h (File_read::claim_for_plugin): New function. (File_read::descriptor): New function. * gold.cc: Include "plugin.h". (queue_initial_tasks): Add task to call plugin hooks for generating new object files. * main.cc: Include "plugin.h". (main): Load plugin libraries. * object.h (Pluginobj): Declare. (Object::pluginobj): New function. (Object::do_pluginobj): New function. (Object::set_target): New function. * options.cc: Include "plugin.h". (General_options::parse_plugin): New function. (General_options::General_options): Initialize plugins_ field. (General_options::add_plugin): New function. * options.h (Plugin_manager): Declare. (General_options): Add --plugin option. (General_options::has_plugins): New function. (General_options::plugins): New function. (General_options::add_plugin): New function. (General_options::plugins_): New field. * plugin.cc: New file. * plugin.h: New file. * readsyms.cc: Include "plugin.h". (Read_symbols::do_read_symbols): Check for archive before checking for ELF file. Call plugin hooks to claim files. * resolve.cc (Symbol_table::resolve): Record when symbol is referenced from a real object file; force override when processing replacement files. * symtab.cc (Symbol::init_fields): Initialize in_real_elf_ field. (Symbol::init_base_object): Likewise. (Symbol::init_base_output_data): Likewise. (Symbol::init_base_output_segment): Likewise. (Symbol::init_base_constant): Likewise. (Symbol::init_base_undefined): Likewise. (Symbol::output_section): Assert that object is not a plugin. (Symbol_table::add_from_pluginobj): New function. (Symbol_table::sized_finalize_symbol): Treat symbols from plugins as undefined. (Symbol_table::sized_write_globals): Likewise. (Symbol_table::add_from_pluginobj): Instantiate template. * symtab.h (Sized_pluginobj): Declare. (Symbol::in_real_elf): New function. (Symbol::set_in_real_elf): New function. (Symbol::in_real_elf_): New field. (Symbol_table::add_from_pluginobj): New function. * testsuite/Makefile.am (AM_CFLAGS): New variable. (LIBDL): New variable. (LDADD): Add LIBDL. (check_PROGRAMS): Add plugin_test_1 and plugin_test_2. (check_SCRIPTS): Add plugin_test_1.sh and plugin_test_2.sh. (check_DATA): Add plugin_test_1.err and plugin_test_2.err. (MOSTLYCLEANFILES): Likewise. * testsuite/Makefile.in: Regenerate. * testsuite/plugin_test.c: New file. * testsuite/plugin_test_1.sh: New file. * testsuite/plugin_test_2.sh: New file.
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#include "plugin.h"
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namespace gold
{
const char* program_name;
void
gold_exit(bool status)
{
if (parameters != NULL
&& parameters->options_valid()
&& parameters->options().has_plugins())
parameters->options().plugins()->cleanup();
if (!status && parameters != NULL && parameters->options_valid())
unlink_if_ordinary(parameters->options().output_file_name());
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exit(status ? EXIT_SUCCESS : EXIT_FAILURE);
}
void
gold_nomem()
{
// We are out of memory, so try hard to print a reasonable message.
// Note that we don't try to translate this message, since the
// translation process itself will require memory.
// LEN only exists to avoid a pointless warning when write is
// declared with warn_use_result, as when compiling with
// -D_USE_FORTIFY on GNU/Linux. Casting to void does not appear to
// work, at least not with gcc 4.3.0.
ssize_t len = write(2, program_name, strlen(program_name));
if (len >= 0)
{
const char* const s = ": out of memory\n";
len = write(2, s, strlen(s));
}
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gold_exit(false);
}
// Handle an unreachable case.
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void
do_gold_unreachable(const char* filename, int lineno, const char* function)
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{
fprintf(stderr, _("%s: internal error in %s, at %s:%d\n"),
program_name, function, filename, lineno);
gold_exit(false);
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}
// This class arranges to run the functions done in the middle of the
// link. It is just a closure.
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class Middle_runner : public Task_function_runner
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{
public:
Middle_runner(const General_options& options,
const Input_objects* input_objects,
Symbol_table* symtab,
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
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Layout* layout, Mapfile* mapfile)
: options_(options), input_objects_(input_objects), symtab_(symtab),
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
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layout_(layout), mapfile_(mapfile)
{ }
void
run(Workqueue*, const Task*);
private:
const General_options& options_;
const Input_objects* input_objects_;
Symbol_table* symtab_;
Layout* layout_;
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
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Mapfile* mapfile_;
};
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void
Middle_runner::run(Workqueue* workqueue, const Task* task)
{
queue_middle_tasks(this->options_, task, this->input_objects_, this->symtab_,
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
2008-05-21 23:37:44 +02:00
this->layout_, workqueue, this->mapfile_);
}
2006-08-05 01:10:59 +02:00
2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
2009-01-28 03:25:33 +01:00
// This class arranges the tasks to process the relocs for garbage collection.
class Gc_runner : public Task_function_runner
{
public:
Gc_runner(const General_options& options,
const Input_objects* input_objects,
Symbol_table* symtab,
Layout* layout, Mapfile* mapfile)
: options_(options), input_objects_(input_objects), symtab_(symtab),
layout_(layout), mapfile_(mapfile)
{ }
void
run(Workqueue*, const Task*);
private:
const General_options& options_;
const Input_objects* input_objects_;
Symbol_table* symtab_;
Layout* layout_;
Mapfile* mapfile_;
};
void
Gc_runner::run(Workqueue* workqueue, const Task* task)
{
queue_middle_gc_tasks(this->options_, task, this->input_objects_,
this->symtab_, this->layout_, workqueue,
this->mapfile_);
}
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// Queue up the initial set of tasks for this link job.
void
queue_initial_tasks(const General_options& options,
Dirsearch& search_path,
const Command_line& cmdline,
2006-09-26 23:00:34 +02:00
Workqueue* workqueue, Input_objects* input_objects,
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
2008-05-21 23:37:44 +02:00
Symbol_table* symtab, Layout* layout, Mapfile* mapfile)
2006-08-05 01:10:59 +02:00
{
if (cmdline.begin() == cmdline.end())
gold_fatal(_("no input files"));
int thread_count = options.thread_count_initial();
if (thread_count == 0)
thread_count = cmdline.number_of_input_files();
workqueue->set_thread_count(thread_count);
2006-08-05 01:10:59 +02:00
// Read the input files. We have to add the symbols to the symbol
// table in order. We do this by creating a separate blocker for
// each input file. We associate the blocker with the following
// input file, to give us a convenient place to delete it.
Task_token* this_blocker = NULL;
for (Command_line::const_iterator p = cmdline.begin();
p != cmdline.end();
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++p)
{
Task_token* next_blocker = new Task_token(true);
2006-08-05 01:10:59 +02:00
next_blocker->add_blocker();
workqueue->queue(new Read_symbols(options, input_objects, symtab, layout,
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
2008-05-21 23:37:44 +02:00
&search_path, mapfile, &*p, NULL,
this_blocker, next_blocker));
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this_blocker = next_blocker;
}
Add plugin functionality for link-time optimization (LTO). include/: * plugin-api.h: New file. gold/: * configure.ac (plugins): Add --enable-plugins option. * configure: Regenerate. * config.in: Regenerate. * Makefile.am (LIBDL): New variable. (CCFILES): Add plugin.cc. (HFILES): Add plugin.h. (ldadd_var): Add LIBDL. * Makefile.in: Regenerate. * archive.cc: Include "plugin.h". (Archive::setup): Don't preread archive symbols when using a plugin. (Archive::get_file_and_offset): Add memsize parameter. Change callers. (Archive::get_elf_object_for_member): Call plugin hooks for claiming files. (Archive::include_member): Add symbols from plugin objects. * archive.h (Archive::get_file_and_offset): Add memsize parameter. * descriptors.cc (Descriptors::open): Check for file descriptors abandoned by plugins. (Descriptors::claim_for_plugin): New function. * descriptors.h (Descriptors::claim_for_plugin): New function. (Open_descriptor::is_claimed): New field. (claim_descriptor_for_plugin): New function. * fileread.cc (File_read::claim_for_plugin): New function. * fileread.h (File_read::claim_for_plugin): New function. (File_read::descriptor): New function. * gold.cc: Include "plugin.h". (queue_initial_tasks): Add task to call plugin hooks for generating new object files. * main.cc: Include "plugin.h". (main): Load plugin libraries. * object.h (Pluginobj): Declare. (Object::pluginobj): New function. (Object::do_pluginobj): New function. (Object::set_target): New function. * options.cc: Include "plugin.h". (General_options::parse_plugin): New function. (General_options::General_options): Initialize plugins_ field. (General_options::add_plugin): New function. * options.h (Plugin_manager): Declare. (General_options): Add --plugin option. (General_options::has_plugins): New function. (General_options::plugins): New function. (General_options::add_plugin): New function. (General_options::plugins_): New field. * plugin.cc: New file. * plugin.h: New file. * readsyms.cc: Include "plugin.h". (Read_symbols::do_read_symbols): Check for archive before checking for ELF file. Call plugin hooks to claim files. * resolve.cc (Symbol_table::resolve): Record when symbol is referenced from a real object file; force override when processing replacement files. * symtab.cc (Symbol::init_fields): Initialize in_real_elf_ field. (Symbol::init_base_object): Likewise. (Symbol::init_base_output_data): Likewise. (Symbol::init_base_output_segment): Likewise. (Symbol::init_base_constant): Likewise. (Symbol::init_base_undefined): Likewise. (Symbol::output_section): Assert that object is not a plugin. (Symbol_table::add_from_pluginobj): New function. (Symbol_table::sized_finalize_symbol): Treat symbols from plugins as undefined. (Symbol_table::sized_write_globals): Likewise. (Symbol_table::add_from_pluginobj): Instantiate template. * symtab.h (Sized_pluginobj): Declare. (Symbol::in_real_elf): New function. (Symbol::set_in_real_elf): New function. (Symbol::in_real_elf_): New field. (Symbol_table::add_from_pluginobj): New function. * testsuite/Makefile.am (AM_CFLAGS): New variable. (LIBDL): New variable. (LDADD): Add LIBDL. (check_PROGRAMS): Add plugin_test_1 and plugin_test_2. (check_SCRIPTS): Add plugin_test_1.sh and plugin_test_2.sh. (check_DATA): Add plugin_test_1.err and plugin_test_2.err. (MOSTLYCLEANFILES): Likewise. * testsuite/Makefile.in: Regenerate. * testsuite/plugin_test.c: New file. * testsuite/plugin_test_1.sh: New file. * testsuite/plugin_test_2.sh: New file.
2008-09-20 00:54:57 +02:00
if (options.has_plugins())
{
Task_token* next_blocker = new Task_token(true);
next_blocker->add_blocker();
workqueue->queue(new Plugin_hook(options, input_objects, symtab, layout,
&search_path, mapfile, this_blocker,
next_blocker));
this_blocker = next_blocker;
}
2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
2009-01-28 03:25:33 +01:00
if (parameters->options().relocatable()
&& parameters->options().gc_sections())
gold_error(_("cannot mix -r with garbage collection"));
if (parameters->options().gc_sections())
{
workqueue->queue(new Task_function(new Gc_runner(options,
input_objects,
symtab,
layout,
mapfile),
this_blocker,
"Task_function Gc_runner"));
}
else
{
workqueue->queue(new Task_function(new Middle_runner(options,
input_objects,
symtab,
layout,
mapfile),
this_blocker,
"Task_function Middle_runner"));
}
}
// Queue up a set of tasks to be done before queueing the middle set
// of tasks. This is only necessary when garbage collection
// (--gc-sections) of unused sections is desired. The relocs are read
// and processed here early to determine the garbage sections before the
// relocs can be scanned in later tasks.
void
queue_middle_gc_tasks(const General_options& options,
const Task* ,
const Input_objects* input_objects,
Symbol_table* symtab,
Layout* layout,
Workqueue* workqueue,
Mapfile* mapfile)
{
// Read_relocs for all the objects must be done and processed to find
// unused sections before any scanning of the relocs can take place.
Task_token* blocker = new Task_token(true);
Task_token* symtab_lock = new Task_token(false);
for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
p != input_objects->relobj_end();
++p)
{
// We can read and process the relocations in any order.
blocker->add_blocker();
workqueue->queue(new Read_relocs(options, symtab, layout, *p,
symtab_lock, blocker));
}
Task_token* this_blocker = new Task_token(true);
workqueue->queue(new Task_function(new Middle_runner(options,
2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
2009-01-28 03:25:33 +01:00
input_objects,
symtab,
layout,
mapfile),
this_blocker,
"Task_function Middle_runner"));
2006-08-05 01:10:59 +02:00
}
// Queue up the middle set of tasks. These are the tasks which run
// after all the input objects have been found and all the symbols
// have been read, but before we lay out the output file.
2006-08-05 01:10:59 +02:00
void
queue_middle_tasks(const General_options& options,
const Task* task,
const Input_objects* input_objects,
Symbol_table* symtab,
Layout* layout,
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
2008-05-21 23:37:44 +02:00
Workqueue* workqueue,
Mapfile* mapfile)
{
2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
2009-01-28 03:25:33 +01:00
// Add any symbols named with -u options to the symbol table.
symtab->add_undefined_symbols_from_command_line();
// If garbage collection was chosen, relocs have been read and processed
// at this point by pre_middle_tasks. Layout can then be done for all
// objects.
if (parameters->options().gc_sections())
{
// Find the start symbol if any.
Symbol* start_sym;
if (parameters->options().entry())
start_sym = symtab->lookup(parameters->options().entry());
else
start_sym = symtab->lookup("_start");
if (start_sym !=NULL)
{
bool is_ordinary;
unsigned int shndx = start_sym->shndx(&is_ordinary);
if (is_ordinary)
{
symtab->gc()->worklist().push(
Section_id(start_sym->object(), shndx));
}
}
// Symbols named with -u should not be considered garbage.
symtab->gc_mark_undef_symbols();
gold_assert(symtab->gc() != NULL);
// Do a transitive closure on all references to determine the worklist.
symtab->gc()->do_transitive_closure();
// Call do_layout again to determine the output_sections for all
// referenced input sections.
for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
p != input_objects->relobj_end();
++p)
{
(*p)->layout(symtab, layout, NULL);
}
}
// Layout deferred objects due to plugins.
if (parameters->options().has_plugins())
{
Plugin_manager* plugins = parameters->options().plugins();
gold_assert(plugins != NULL);
plugins->layout_deferred_objects();
}
if (parameters->options().gc_sections())
{
for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
p != input_objects->relobj_end();
++p)
{
// Update the value of output_section stored in rd.
Read_relocs_data *rd = (*p)->get_relocs_data();
for (Read_relocs_data::Relocs_list::iterator q = rd->relocs.begin();
q != rd->relocs.end();
++q)
{
q->output_section = (*p)->output_section(q->data_shndx);
q->needs_special_offset_handling =
(*p)->is_output_section_offset_invalid(q->data_shndx);
}
}
}
// We have to support the case of not seeing any input objects, and
// generate an empty file. Existing builds depend on being able to
// pass an empty archive to the linker and get an empty object file
// out. In order to do this we need to use a default target.
if (input_objects->number_of_input_objects() == 0)
set_parameters_target(&parameters->default_target());
int thread_count = options.thread_count_middle();
if (thread_count == 0)
thread_count = std::max(2, input_objects->number_of_input_objects());
workqueue->set_thread_count(thread_count);
// Now we have seen all the input files.
const bool doing_static_link = (!input_objects->any_dynamic()
&& !parameters->options().shared());
set_parameters_doing_static_link(doing_static_link);
if (!doing_static_link && options.is_static())
{
// We print out just the first .so we see; there may be others.
gold_assert(input_objects->dynobj_begin() != input_objects->dynobj_end());
gold_error(_("cannot mix -static with dynamic object %s"),
(*input_objects->dynobj_begin())->name().c_str());
}
if (!doing_static_link && parameters->options().relocatable())
2008-02-06 09:13:50 +01:00
gold_error(_("cannot mix -r with dynamic object %s"),
(*input_objects->dynobj_begin())->name().c_str());
2008-02-07 08:33:46 +01:00
if (!doing_static_link
&& options.oformat_enum() != General_options::OBJECT_FORMAT_ELF)
2008-02-07 08:33:46 +01:00
gold_fatal(_("cannot use non-ELF output format with dynamic object %s"),
(*input_objects->dynobj_begin())->name().c_str());
if (is_debugging_enabled(DEBUG_SCRIPT))
layout->script_options()->print(stderr);
// For each dynamic object, record whether we've seen all the
// dynamic objects that it depends upon.
input_objects->check_dynamic_dependencies();
// See if any of the input definitions violate the One Definition Rule.
// TODO: if this is too slow, do this as a task, rather than inline.
symtab->detect_odr_violations(task, options.output_file_name());
// Create any output sections required by any linker script.
layout->create_script_sections();
// Define some sections and symbols needed for a dynamic link. This
// handles some cases we want to see before we read the relocs.
layout->create_initial_dynamic_sections(symtab);
2008-02-04 06:43:05 +01:00
// Define symbols from any linker scripts.
layout->define_script_symbols(symtab);
// Attach sections to segments.
layout->attach_sections_to_segments();
if (!parameters->options().relocatable())
2008-02-06 09:13:50 +01:00
{
// Predefine standard symbols.
define_standard_symbols(symtab, layout);
2008-02-06 09:13:50 +01:00
// Define __start and __stop symbols for output sections where
// appropriate.
layout->define_section_symbols(symtab);
}
2007-09-22 06:42:09 +02:00
// Make sure we have symbols for any required group signatures.
layout->define_group_signatures(symtab);
Task_token* blocker = new Task_token(true);
Task_token* symtab_lock = new Task_token(false);
2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
2009-01-28 03:25:33 +01:00
// If doing garbage collection, the relocations have already been read.
// Otherwise, read and scan the relocations.
if (parameters->options().gc_sections())
{
2009-01-20 Sriraman Tallam <tmsriram@google.com> * Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
2009-01-28 03:25:33 +01:00
for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
p != input_objects->relobj_end();
++p)
{
blocker->add_blocker();
workqueue->queue(new Scan_relocs(options, symtab, layout, *p,
(*p)->get_relocs_data(),symtab_lock, blocker));
}
}
else
{
// Read the relocations of the input files. We do this to find
// which symbols are used by relocations which require a GOT and/or
// a PLT entry, or a COPY reloc. When we implement garbage
// collection we will do it here by reading the relocations in a
// breadth first search by references.
//
// We could also read the relocations during the first pass, and
// mark symbols at that time. That is how the old GNU linker works.
// Doing that is more complex, since we may later decide to discard
// some of the sections, and thus change our minds about the types
// of references made to the symbols.
for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
p != input_objects->relobj_end();
++p)
{
// We can read and process the relocations in any order. But we
// only want one task to write to the symbol table at a time.
// So we queue up a task for each object to read the
// relocations. That task will in turn queue a task to wait
// until it can write to the symbol table.
blocker->add_blocker();
workqueue->queue(new Read_relocs(options, symtab, layout, *p,
symtab_lock, blocker));
}
}
// Allocate common symbols. This requires write access to the
// symbol table, but is independent of the relocation processing.
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if (parameters->options().define_common())
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{
blocker->add_blocker();
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
2008-05-21 23:37:44 +02:00
workqueue->queue(new Allocate_commons_task(symtab, layout, mapfile,
symtab_lock, blocker));
2008-02-06 09:13:50 +01:00
}
// When all those tasks are complete, we can start laying out the
// output file.
// TODO(csilvers): figure out a more principled way to get the target
Target* target = const_cast<Target*>(&parameters->target());
workqueue->queue(new Task_function(new Layout_task_runner(options,
input_objects,
symtab,
target,
* mapfile.cc: New file. * mapfile.h: New file. * options.h (class General_options): Add -M/--print-map and -Map. * options.cc (General_options::finalize): Make -M equivalent to -Map -. * main.cc: Include <cstdio> and "mapfile.h". (main): Open mapfile if requested. * gold.cc (class Middle_runner): Add mapfile_ field. Update constructor. Change caller. (queue_initial_tasks): Add mapfile parameter. Change caller. (queue_middle_tasks): Likewise. * gold.h (queue_initial_tasks, queue_middle_tasks): Update declarations. * archive.cc: Include "mapfile.h". (Archive::add_symbols): Add mapfile parameter. Change all callers. Pass mapfile, symbol, and reason to include_member. (Archive::include_all_members): Add mapfile parameter. Change all callers. (Archive::include_member): Add mapfile, sym, and why parameters. Change all callers. Report inclusion to map file. * archive.h: Include "fileread.h". (class Archive): Update declarations. (Archive::file): New const method. (class Add_archive_symbols): Add mapfile_ field. Update constructor. Change all callers. * readsyms.h (class Read_symbols): Likewise. (class Finish_group): Likewise. (class Read_script): Likewise. * common.cc: Include "mapfile.h". (Symbol_table::allocate_commons): Add mapfile parameter. Change all callers. (Symbol_table::do_allocate_commons): Likewise. (Symbol_table::do_allocate_commons_list): Likewise. Report common symbol allocation to mapfile. * common.h (class Allocate_commons_task): Add mapfile_ field. Update constructor. Change all callers. * symtab.h (class Symbol_table): Update declarations. * layout.cc: Include "mapfile.h". (Layout_task_runner::run): Print information to mapfile. (Layout::create_gold_note): Change Output_data_fixed_space to Output_data_zero_fill. (Layout::create_build_id): Likewise. (Layout::print_to_mapfile): New function. * layout.h (class Layout_task_runner): Add mapfile_ field. Update constructor. Change caller. (class Layout): Declare print_to_mapfile. * output.cc (Output_section::Input_section::print_to_mapfile): New function. (Output_section::add_input_section): If producing a map, always add to input_sections_ list. (Output_section::do_print_to_mapfile): New function. (Output_segment::print_sections_to_mapfile): New function. (Output_segment::print_section_list_to_mapfile): New function. * output.h: Include "mapfile.h". (Output_data::print_to_mapfile): New function. (Output_data::do_print_to_mapfile): New virtual function. (Output_segment_headers::do_print_to_mapfile): New function. (Output_file_header::do_print_to_mapfile): New function. (Output_data_const::do_print_to_mapfile): New function. (class Output_data_const_buffer): Add map_name_ field. Update constructor. Change all callers. Add do_print_to_mapfile function. (class Output_data_fixed_space): Likewise. (class Output_data_space): Likewise. (class Output_data_zero_fill): New class. (Output_data_strtab::do_print_to_mapfile): New function. (Output_data_reloc_base::do_print_to_mapfile): New function. (Output_relocatable_relocs::do_print_to_mapfile): New function. (Output_data_group::do_print_to_mapfile): New function. (Output_data_got::do_print_to_mapfile): New function. (Output_data_dynamic::do_print_to_mapfile): New function. (Output_symtab_xindex::do_print_to_mapfile): New function. (class Output_section): Declare do_print_to_mapflie. Declare print_to_mapfile in Input_section. (class Output_segment): Declare new functions. * object.h (Sized_relobj::symbol_count): New function. * script-sections.cc (Output_section_element_dot_assignment::set_section_addresses): Change Output_data_fixed_space to Output_data_zero_fill. (Output_data_expression::do_print_to_mapfile): New function. * script.cc (read_input_script): Add mapfile parameter. Change all callers. * script.h (read_input_script): Update declaration. * ehframe.h (Eh_frame_hdr::do_print_to_mapfile): New function. (Eh_frame::do_print_to_mapfile): New function. * merge.h (Output_merge_data::do_print_to_mapfile): New function. (Output_merge_string::do_print_to_mapfile): New function. * i386.cc (Output_data_plt_i386::do_print_to_mapfile): New function. * sparc.cc (Output_data_plt_sparc::do_print_to_mapfile): New function. * x86_64.cc (Output_data_plt_x86_64::do_print_to_mapfile): New function. * Makefile.am (CCFILES): Add mapfile.cc. (HFILES): Add mapfile.h. * Makefile.in: Rebuild.
2008-05-21 23:37:44 +02:00
layout,
mapfile),
2007-11-22 01:05:51 +01:00
blocker,
"Task_function Layout_task_runner"));
}
// Queue up the final set of tasks. This is called at the end of
// Layout_task.
void
queue_final_tasks(const General_options& options,
const Input_objects* input_objects,
const Symbol_table* symtab,
Layout* layout,
Workqueue* workqueue,
Output_file* of)
{
int thread_count = options.thread_count_final();
if (thread_count == 0)
thread_count = std::max(2, input_objects->number_of_input_objects());
workqueue->set_thread_count(thread_count);
bool any_postprocessing_sections = layout->any_postprocessing_sections();
// Use a blocker to wait until all the input sections have been
// written out.
Task_token* input_sections_blocker = NULL;
if (!any_postprocessing_sections)
input_sections_blocker = new Task_token(true);
// Use a blocker to block any objects which have to wait for the
// output sections to complete before they can apply relocations.
Task_token* output_sections_blocker = new Task_token(true);
// Use a blocker to block the final cleanup task.
Task_token* final_blocker = new Task_token(true);
// Queue a task to write out the symbol table.
final_blocker->add_blocker();
* object.cc (Xindex::initialize_symtab_xindex): New function. (Xindex::read_symtab_xindex): New function. (Xindex::sym_xindex_to_shndx): New function. (Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if available. (Sized_relobj::do_initialize_xindex): New function. (Sized_relobj::do_read_symbols): Adjust section links. (Sized_relobj::symbol_section_and_value): Add is_ordinary parameter. Change all callers. (Sized_relobj::include_section_group): Adjust section links and symbol section indexes. (Sized_relobj::do_layout): Adjust section links. (Sized_relobj::do_count_local_symbols): Adjust section links and symbol section indexes. (Sized_relobj::do_finalize_local_symbols): Distinguish between ordinary and special symbols. (Sized_relobj::write_local_symbols): Add symtab_xindex and dynsym_xindex parameters. Change all callers. Adjust section links. Use SHN_XINDEX when needed. (Sized_relobj::get_symbol_location_info): Adjust section links. Don't get fooled by special symbols. * object.h (class Xindex): Define. (class Object): Add xindex_ parameter. Declare virtual functoin do_initialize_xindex. (Object::adjust_sym_shndx): New function. (Object::set_xindex): New protected function. (class Symbol_value): Add is_ordinary_shndx_ field. (Symbol_value::Symbol_value): Initialize is_ordinary_shndx_. (Symbol_value::value): Assert ordinary section. (Symbol_value::initialize_input_to_output_map): Likewise. (Symbol_value::set_input_shndx): Add is_ordinary parameter. Change all callers. (Symbol_value::input_shndx): Add is_ordinary parameter. Change all callers. (class Sized_relobj): Update declarations. (Sized_relobj::local_symbol_input_shndx): Add is_ordinary parameter. Change all callers. (Sized_relobj::adjust_shndx): New function. * dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_ field. (Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx parameter. Change all callers. Pick up SHT_DYNSYM_SHNDX section for SHT_DYNSYM section if available. Set dynsym_shndx_ field. (Sized_dynobj::read_dynsym_section): Adjust section links. (Sized_dynobj::read_dynamic): Likewise. (Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field. Adjust section links. (Sized_dynobj::do_initialize_xindex): New function. * dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field. Declare do_initialize_xindex. (Sized_dynobj::adjust_shndx): New function. * layout.cc (Layout::Layout): Initialize symtab_xindex_ and dynsym_xindex_ fields. (Layout::finalize): Add a call to set_section_indexes before creating the symtab sections. (Layout::set_section_indexes): Don't do anything if the section already has a section index. (Layout::create_symtab_sections): Add shnum parameter. Change caller. Create .symtab_shndx section if needed. (Layout::create_shdrs): Add shstrtab_section parameter. Change caller. (Layout::allocated_output_section_count): New function. (Layout::create_dynamic_symtab): Create .dynsym_shndx section if needed. * layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_ fields. Update declarations. (Layout::symtab_xindex): New function. (Layout::dynsym_xindex): New function. (class Write_symbols_task): Add layout_ field. (Write_symbols_task::Write_symbols_task): Add layout parameter. Change caller. * output.cc (Output_section_headers::Output_section_headers): Add shstrtab_section parameter. Change all callers. (Output_section_headers::do_sized_write): Store overflow values for section count and section string table section index in section header zero. (Output_file_header::do_sized_write): Check for overflow of section count and section string table section index. (Output_symtab_xindex::do_write): New function. (Output_symtab_xindex::endian_do_write): New function. * output.h (class Output_section_headers): Add shstrtab_section_. Update declarations. (class Output_symtab_xindex): Define. (Output_section::has_out_shndx): New function. * symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_ field. (Symbol::init_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::init): Likewise. (Symbol::output_section): Check for ordinary symbol. (Symbol_table::add_from_object): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. (Symbol_table::add_from_relobj): Add symndx_offset parameter. Change all callers. Simplify handling of symbols from sections not included in the link. (Symbol_table::add_from_dynobj): Handle ordinary symbol distinction. (Weak_alias_sorter::operator()): Assert that symbols are ordinary. (Symbol_table::sized_finalize_symbol): Handle ordinary symbol distinction. (Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex parameters. Change all callers. (Symbol_table::sized_write_globals): Likewise. Handle ordinary symbol distinction. Use SHN_XINDEX when needed. (Symbol_table::write_section_symbol): Add symtab_xindex parameter. Change all callers. (Symbol_table::sized_write_section_symbol): Likewise. Use SHN_XINDEX when needed. * symtab.h (class Symbol): Add is_ordinary_shndx_ field. Update declarations. (Symbol::shndx): Add is_ordinary parameter. Change all callers. (Symbol::is_defined): Check is_ordinary. (Symbol::is_undefined, Symbol::is_weak_undefined): Likewise. (Symbol::is_absolute, Symbol::is_common): Likewise. (class Sized_symbol): Update declarations. (class Symbol_table): Update declarations. * resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary parameters. Change all callers. (Sized_symbol::override): Likewise. (Symbol_table::override): Likewise. (symbol_to_bits): Add is_ordinary parameter. Change all callers. (Symbol_table::resolve): Remove orig_sym parameter. Add st_shndx, is_ordinary, and orig_st_shndx parameters. Change all callers. * copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol to be in an ordinary section. * dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add object and is_ordinary parameters. Change all callers. (Sized_dwarf_line_info::read_relocs): Add object parameter. Change all callers. Don't add undefined or non-ordinary symbols to reloc_map_. (Sized_dwarf_line_info::read_line_mappings): Add object parameter. Change all callers. * dwarf_reader.h (class Sized_dwarf_line_info): Update declarations. * ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol. * reloc.cc (Sized_relobj::do_read_relocs): Adjust section links. (Sized_relobj::relocate_sections): Likewise. * target-reloc.h (scan_relocs): Adjust section symbol index. (scan_relocatable_relocs): Likewise. * i386.cc (Scan::local): Check for ordinary symbols. * sparc.cc (Scan::local): Likewise. * x86_64.cc (Scan::local): Likewise. * testsuite/binary_unittest.cc (Sized_binary_test): Update calls to symbol_section_and_value. * testsuite/many_sections_test.cc: New file. * testsuite/Makefile.am (BUILT_SOURCES): Define. (check_PROGRAMS): Add many_sections_test. (many_sections_test_SOURCES): Define. (many_sections_test_DEPENDENCIES): Define. (many_sections_test_LDFLAGS): Define. (BUILT_SOURCES): Add many_sections_define.h. (many_sections_define.h): New target. (BUILT_SOURCES): Add many_sections_check.h. (many_sections_check.h): New target. (check_PROGRAMS): Add many_sections_r_test. (many_sections_r_test_SOURCES): Define. (many_sections_r_test_DEPENDENCIES): Define. (many_sections_r_test_LDFLAGS): Define. (many_sections_r_test_LDADD): Define. (many_sections_r_test.o): New target. * testsuite/Makefile.in: Rebuild.
2008-04-19 20:30:58 +02:00
workqueue->queue(new Write_symbols_task(layout,
symtab,
input_objects,
layout->sympool(),
layout->dynpool(),
of,
final_blocker));
// Queue a task to write out the output sections.
output_sections_blocker->add_blocker();
final_blocker->add_blocker();
workqueue->queue(new Write_sections_task(layout, of, output_sections_blocker,
final_blocker));
// Queue a task to write out everything else.
final_blocker->add_blocker();
2007-09-26 09:01:35 +02:00
workqueue->queue(new Write_data_task(layout, symtab, of, final_blocker));
// Queue a task for each input object to relocate the sections and
// write out the local symbols.
for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
p != input_objects->relobj_end();
++p)
{
if (input_sections_blocker != NULL)
input_sections_blocker->add_blocker();
final_blocker->add_blocker();
workqueue->queue(new Relocate_task(options, symtab, layout, *p, of,
input_sections_blocker,
output_sections_blocker,
final_blocker));
}
// Queue a task to write out the output sections which depend on
// input sections. If there are any sections which require
// postprocessing, then we need to do this last, since it may resize
// the output file.
if (!any_postprocessing_sections)
{
final_blocker->add_blocker();
Task* t = new Write_after_input_sections_task(layout, of,
input_sections_blocker,
final_blocker);
workqueue->queue(t);
}
else
{
Task_token *new_final_blocker = new Task_token(true);
new_final_blocker->add_blocker();
Task* t = new Write_after_input_sections_task(layout, of,
final_blocker,
new_final_blocker);
workqueue->queue(t);
final_blocker = new_final_blocker;
}
// Queue a task to close the output file. This will be blocked by
// FINAL_BLOCKER.
2008-02-07 08:33:46 +01:00
workqueue->queue(new Task_function(new Close_task_runner(&options, layout,
of),
2007-11-22 01:05:51 +01:00
final_blocker,
"Task_function Close_task_runner"));
}
} // End namespace gold.