// main.cc -- gold main function.
-// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
#include "gold.h"
+#include <cstdio>
+#include <cstring>
+
#ifdef HAVE_MALLINFO
#include <malloc.h>
#endif
+
#include "libiberty.h"
#include "script.h"
#include "options.h"
#include "parameters.h"
#include "errors.h"
+#include "mapfile.h"
#include "dirsearch.h"
#include "workqueue.h"
#include "object.h"
+#include "archive.h"
#include "symtab.h"
#include "layout.h"
+#include "plugin.h"
+#include "gc.h"
+#include "icf.h"
+#include "incremental.h"
+#include "timer.h"
using namespace gold;
// Initialize the global parameters, to let random code get to the
// errors object.
- initialize_parameters(&errors);
-
- // Options which may be set by the command line or by linker
- // scripts.
- Script_options script_options;
+ set_parameters_errors(&errors);
// Handle the command line options.
- Command_line command_line(&script_options);
- command_line.process(argc - 1, argv + 1);
+ Command_line command_line;
+ command_line.process(argc - 1, const_cast<const char**>(argv + 1));
- long start_time = 0;
- if (command_line.options().print_stats())
- start_time = get_run_time();
+ Timer timer;
+ if (command_line.options().stats())
+ timer.start();
// Store some options in the globally accessible parameters.
- set_parameters_from_options(&command_line.options());
+ set_parameters_options(&command_line.options());
// Do this as early as possible (since it prints a welcome message).
write_debug_script(command_line.options().output_file_name(),
program_name, args.c_str());
+ // If the user asked for a map file, open it.
+ Mapfile* mapfile = NULL;
+ if (command_line.options().user_set_Map())
+ {
+ mapfile = new Mapfile();
+ if (!mapfile->open(command_line.options().Map()))
+ {
+ delete mapfile;
+ mapfile = NULL;
+ }
+ }
+
// The GNU linker ignores version scripts when generating
// relocatable output. If we are not compatible, then we break the
// Linux kernel build, which uses a linker script with -r which must
// permit symbols to be forced local with -r, though, as it would
// permit some linker optimizations. Perhaps we need yet another
// option to control this. FIXME.
- if (parameters->output_is_object())
- command_line.script_options()->version_script_info()->clear();
+ if (parameters->options().relocatable())
+ command_line.script_options().version_script_info()->clear();
+
+ // Load plugin libraries.
+ if (command_line.options().has_plugins())
+ command_line.options().plugins()->load_plugins();
// The work queue.
Workqueue workqueue(command_line.options());
// The list of input objects.
Input_objects input_objects;
+ // The Garbage Collection (GC, --gc-sections) Object.
+ Garbage_collection gc;
+
+ // The Identical Code Folding (ICF, --icf) Object.
+ Icf icf;
+
// The symbol table. We're going to guess here how many symbols
// we're going to see based on the number of input files. Even when
// this is off, it means at worst we don't quite optimize hashtable
// resizing as well as we could have (perhap using more memory).
Symbol_table symtab(command_line.number_of_input_files() * 1024,
- command_line.options().version_script());
+ command_line.version_script());
+
+ if (parameters->options().gc_sections())
+ symtab.set_gc(&gc);
+
+ if (parameters->options().icf_enabled())
+ symtab.set_icf(&icf);
// The layout object.
- Layout layout(command_line.options(), &script_options);
+ Layout layout(command_line.number_of_input_files(),
+ &command_line.script_options());
+
+ if (layout.incremental_inputs() != NULL)
+ {
+ layout.incremental_inputs()->report_command_line(argc, argv);
+ layout.incremental_inputs()->report_inputs(command_line.inputs());
+ }
+
+ if (parameters->options().section_ordering_file())
+ layout.read_layout_from_file();
// Get the search path from the -L options.
Dirsearch search_path;
- search_path.initialize(&workqueue, &command_line.options().search_path());
+ search_path.initialize(&workqueue, &command_line.options().library_path());
// Queue up the first set of tasks.
queue_initial_tasks(command_line.options(), search_path,
command_line, &workqueue, &input_objects,
- &symtab, &layout);
+ &symtab, &layout, mapfile);
// Run the main task processing loop.
workqueue.process(0);
- if (command_line.options().print_stats())
+ if (command_line.options().stats())
{
- long run_time = get_run_time() - start_time;
- fprintf(stderr, _("%s: total run time: %ld.%06ld seconds\n"),
- program_name, run_time / 1000000, run_time % 1000000);
+ Timer::TimeStats elapsed = timer.get_elapsed_time();
+ fprintf(stderr,
+ _("%s: total run time: " \
+ "(user: %ld.%06ld sys: %ld.%06ld wall: %ld.%06ld)\n"),
+ program_name,
+ elapsed.user / 1000, (elapsed.user % 1000) * 1000,
+ elapsed.sys / 1000, (elapsed.sys % 1000) * 1000,
+ elapsed.wall / 1000, (elapsed.wall % 1000) * 1000);
+
#ifdef HAVE_MALLINFO
struct mallinfo m = mallinfo();
fprintf(stderr, _("%s: total space allocated by malloc: %d bytes\n"),
program_name, m.arena);
#endif
File_read::print_stats();
+ Archive::print_stats();
+ Lib_group::print_stats();
fprintf(stderr, _("%s: output file size: %lld bytes\n"),
program_name, static_cast<long long>(layout.output_file_size()));
symtab.print_stats();
layout.print_stats();
}
- gold_exit(errors.error_count() == 0);
+ // Issue defined symbol report.
+ if (command_line.options().user_set_print_symbol_counts())
+ input_objects.print_symbol_counts(&symtab);
+
+ // Output cross reference table.
+ if (command_line.options().cref())
+ input_objects.print_cref(&symtab,
+ mapfile == NULL ? stdout : mapfile->file());
+
+ if (mapfile != NULL)
+ mapfile->close();
+
+ if (parameters->options().fatal_warnings()
+ && errors.warning_count() > 0
+ && errors.error_count() == 0)
+ gold_error("treating warnings as errors");
+
+ // If the user used --noinhibit-exec, we force the exit status to be
+ // successful. This is compatible with GNU ld.
+ gold_exit(errors.error_count() == 0
+ || parameters->options().noinhibit_exec());
}