374ad2854b
* options.h (class General_options): Add -pie and --pic-executable. (General_options::output_is_position_independent): Test -pie. (General_options::output_is_executable): Return true if not shared and not relocatable. (General_options::output_is_pie): Remove. * options.cc (General_options::finalize): Reject incompatible uses of -pie. * gold.cc (queue_middle_tasks): A -pie link is not static. * symtab.h (Symbol::needs_plt_entry): Return false if -pie. * symtab.cc (Symbol::final_value_is_known): Return false if output_is_position_independent. * layout.cc (Layout::set_segment_offsets): Start at address 0 if output_is_position_independent. * output.cc (Output_file_header::do_sized_write): Use ET_DYN if output_is_position_independent. * i386.cc (Output_data_plt_i386::do_write): Use the PIC PLT if output_is_position_independent. * testsuite/Makefile.am (check_PROGRAMS): Add basic_pie_test and two_file_pie_test. (basic_pie_test.o, basic_pie_test): New targets. (two_file_test_1_pie.o, two_file_test_1b_pie.o): New targets. (two_file_test_2_pie.o, two_file_test_main_pie.o): New targets. (two_file_pie_test): New target. * testsuite/Makefile.in: Rebuild. * README: Remove note saying that -pie is not supported.
640 lines
22 KiB
C++
640 lines
22 KiB
C++
// gold.cc -- main linker functions
|
|
|
|
// 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.
|
|
|
|
#include "gold.h"
|
|
|
|
#include <cstdlib>
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
#include <unistd.h>
|
|
#include <algorithm>
|
|
#include "libiberty.h"
|
|
|
|
#include "options.h"
|
|
#include "debug.h"
|
|
#include "workqueue.h"
|
|
#include "dirsearch.h"
|
|
#include "readsyms.h"
|
|
#include "symtab.h"
|
|
#include "common.h"
|
|
#include "object.h"
|
|
#include "layout.h"
|
|
#include "reloc.h"
|
|
#include "defstd.h"
|
|
#include "plugin.h"
|
|
#include "gc.h"
|
|
#include "icf.h"
|
|
#include "incremental.h"
|
|
|
|
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());
|
|
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));
|
|
}
|
|
gold_exit(false);
|
|
}
|
|
|
|
// Handle an unreachable case.
|
|
|
|
void
|
|
do_gold_unreachable(const char* filename, int lineno, const char* function)
|
|
{
|
|
fprintf(stderr, _("%s: internal error in %s, at %s:%d\n"),
|
|
program_name, function, filename, lineno);
|
|
gold_exit(false);
|
|
}
|
|
|
|
// This class arranges to run the functions done in the middle of the
|
|
// link. It is just a closure.
|
|
|
|
class Middle_runner : public Task_function_runner
|
|
{
|
|
public:
|
|
Middle_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
|
|
Middle_runner::run(Workqueue* workqueue, const Task* task)
|
|
{
|
|
queue_middle_tasks(this->options_, task, this->input_objects_, this->symtab_,
|
|
this->layout_, workqueue, this->mapfile_);
|
|
}
|
|
|
|
// 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_);
|
|
}
|
|
|
|
// 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,
|
|
Workqueue* workqueue, Input_objects* input_objects,
|
|
Symbol_table* symtab, Layout* layout, Mapfile* mapfile)
|
|
{
|
|
if (cmdline.begin() == cmdline.end())
|
|
{
|
|
if (options.printed_version())
|
|
gold_exit(true);
|
|
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);
|
|
|
|
if (cmdline.options().incremental())
|
|
{
|
|
Incremental_checker incremental_checker(
|
|
parameters->options().output_file_name(),
|
|
layout->incremental_inputs());
|
|
if (incremental_checker.can_incrementally_link_output_file())
|
|
{
|
|
// TODO: remove when incremental linking implemented.
|
|
printf("Incremental linking might be possible "
|
|
"(not implemented yet)\n");
|
|
}
|
|
// TODO: If we decide on an incremental build, fewer tasks
|
|
// should be scheduled.
|
|
}
|
|
|
|
// 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();
|
|
++p)
|
|
{
|
|
Task_token* next_blocker = new Task_token(true);
|
|
next_blocker->add_blocker();
|
|
workqueue->queue(new Read_symbols(input_objects, symtab, layout,
|
|
&search_path, 0, mapfile, &*p, NULL,
|
|
this_blocker, next_blocker));
|
|
this_blocker = next_blocker;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
if (parameters->options().relocatable()
|
|
&& (parameters->options().gc_sections()
|
|
|| parameters->options().icf_enabled()))
|
|
gold_error(_("cannot mix -r with --gc-sections or --icf"));
|
|
|
|
if (parameters->options().gc_sections()
|
|
|| parameters->options().icf_enabled())
|
|
{
|
|
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,
|
|
input_objects,
|
|
symtab,
|
|
layout,
|
|
mapfile),
|
|
this_blocker,
|
|
"Task_function Middle_runner"));
|
|
}
|
|
|
|
// 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.
|
|
|
|
void
|
|
queue_middle_tasks(const General_options& options,
|
|
const Task* task,
|
|
const Input_objects* input_objects,
|
|
Symbol_table* symtab,
|
|
Layout* layout,
|
|
Workqueue* workqueue,
|
|
Mapfile* mapfile)
|
|
{
|
|
// 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();
|
|
}
|
|
|
|
// If identical code folding (--icf) is chosen it makes sense to do it
|
|
// only after garbage collection (--gc-sections) as we do not want to
|
|
// be folding sections that will be garbage.
|
|
if (parameters->options().icf_enabled())
|
|
{
|
|
symtab->icf()->find_identical_sections(input_objects, symtab);
|
|
}
|
|
|
|
// Call Object::layout for the second time to determine the
|
|
// output_sections for all referenced input sections. When
|
|
// --gc-sections or --icf is turned on, Object::layout is
|
|
// called twice. It is called the first time when the
|
|
// symbols are added.
|
|
if (parameters->options().gc_sections()
|
|
|| parameters->options().icf_enabled())
|
|
{
|
|
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()
|
|
|| parameters->options().icf_enabled())
|
|
{
|
|
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)
|
|
parameters_force_valid_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().output_is_position_independent());
|
|
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())
|
|
gold_fatal(_("cannot mix -r with dynamic object %s"),
|
|
(*input_objects->dynobj_begin())->name().c_str());
|
|
if (!doing_static_link
|
|
&& options.oformat_enum() != General_options::OBJECT_FORMAT_ELF)
|
|
gold_fatal(_("cannot use non-ELF output format with dynamic object %s"),
|
|
(*input_objects->dynobj_begin())->name().c_str());
|
|
|
|
if (parameters->options().relocatable())
|
|
{
|
|
Input_objects::Relobj_iterator p = input_objects->relobj_begin();
|
|
if (p != input_objects->relobj_end())
|
|
{
|
|
bool uses_split_stack = (*p)->uses_split_stack();
|
|
for (++p; p != input_objects->relobj_end(); ++p)
|
|
{
|
|
if ((*p)->uses_split_stack() != uses_split_stack)
|
|
gold_fatal(_("cannot mix split-stack '%s' and "
|
|
"non-split-stack '%s' when using -r"),
|
|
(*input_objects->relobj_begin())->name().c_str(),
|
|
(*p)->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 automatic note sections.
|
|
layout->create_notes();
|
|
|
|
// 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);
|
|
|
|
// Define symbols from any linker scripts.
|
|
layout->define_script_symbols(symtab);
|
|
|
|
// Attach sections to segments.
|
|
layout->attach_sections_to_segments();
|
|
|
|
if (!parameters->options().relocatable())
|
|
{
|
|
// Predefine standard symbols.
|
|
define_standard_symbols(symtab, layout);
|
|
|
|
// Define __start and __stop symbols for output sections where
|
|
// appropriate.
|
|
layout->define_section_symbols(symtab);
|
|
}
|
|
|
|
// 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);
|
|
|
|
// If doing garbage collection, the relocations have already been read.
|
|
// Otherwise, read and scan the relocations.
|
|
if (parameters->options().gc_sections()
|
|
|| parameters->options().icf_enabled())
|
|
{
|
|
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.
|
|
if (parameters->options().define_common())
|
|
{
|
|
blocker->add_blocker();
|
|
workqueue->queue(new Allocate_commons_task(symtab, layout, mapfile,
|
|
symtab_lock, blocker));
|
|
}
|
|
|
|
// 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*>(¶meters->target());
|
|
workqueue->queue(new Task_function(new Layout_task_runner(options,
|
|
input_objects,
|
|
symtab,
|
|
target,
|
|
layout,
|
|
mapfile),
|
|
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();
|
|
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();
|
|
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.
|
|
workqueue->queue(new Task_function(new Close_task_runner(&options, layout,
|
|
of),
|
|
final_blocker,
|
|
"Task_function Close_task_runner"));
|
|
}
|
|
|
|
} // End namespace gold.
|