-// ld.c -- linker main function
+// gold.cc -- main linker functions
+
+// Copyright 2006, 2007 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 <cstdio>
#include <cstring>
#include <unistd.h>
+#include "libiberty.h"
#include "options.h"
#include "workqueue.h"
void
gold_exit(bool status)
{
+ if (!status && parameters != NULL)
+ unlink_if_ordinary(parameters->output_file_name());
exit(status ? EXIT_SUCCESS : EXIT_FAILURE);
}
-void
-gold_fatal(const char* msg, bool perrno)
-{
- fprintf(stderr, "%s: ", program_name);
- if (perrno)
- perror(msg);
- else
- fprintf(stderr, "%s\n", msg);
- gold_exit(false);
-}
-
void
gold_nomem()
{
gold_exit(false);
}
+// Handle an unreachable case.
+
void
-gold_unreachable()
+do_gold_unreachable(const char* filename, int lineno, const char* function)
{
- abort();
+ 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
Symbol_table* symtab, Layout* layout)
{
if (cmdline.begin() == cmdline.end())
- gold_fatal(_("no input files"), false);
+ 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);
// 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
Task_token* next_blocker = new Task_token();
next_blocker->add_blocker();
workqueue->queue(new Read_symbols(options, input_objects, symtab, layout,
- search_path, *p, NULL, this_blocker,
+ search_path, &*p, NULL, this_blocker,
next_blocker));
this_blocker = next_blocker;
}
Layout* layout,
Workqueue* workqueue)
{
+ if (input_objects->number_of_input_objects() == 0)
+ {
+ // We had some input files, but we weren't able to open any of
+ // them.
+ gold_fatal(_("no input files"));
+ }
+
+ int thread_count = options.thread_count_middle();
+ if (thread_count == 0)
+ thread_count = 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->output_is_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_error(_("cannot mix -static with dynamic object %s"),
+ (*input_objects->dynobj_begin())->name().c_str());
+ }
+
+ // 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();
+
+ // 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(input_objects, symtab);
+
// Predefine standard symbols. This should be fast, so we don't
// bother to create a task for it.
define_standard_symbols(symtab, layout, input_objects->target());
+ // Define __start and __stop symbols for output sections where
+ // appropriate.
+ layout->define_section_symbols(symtab, input_objects->target());
+
// 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
Workqueue* workqueue,
Output_file* of)
{
+ int thread_count = options.thread_count_final();
+ if (thread_count == 0)
+ thread_count = input_objects->number_of_input_objects();
+ workqueue->set_thread_count(thread_count);
+
+ // Use a blocker to wait until all the input sections have been
+ // written out.
+ Task_token* input_sections_blocker = new Task_token();
+
+ // 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();
+
// Use a blocker to block the final cleanup task.
Task_token* final_blocker = new Task_token();
p != input_objects->relobj_end();
++p)
{
+ 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 symbol table.
final_blocker->add_blocker();
- workqueue->queue(new Write_symbols_task(symtab, input_objects->target(),
- layout->sympool(), of,
+ workqueue->queue(new Write_symbols_task(symtab,
+ input_objects->target(),
+ 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, of, final_blocker));
+ workqueue->queue(new Write_data_task(layout, symtab, of, final_blocker));
+
+ // Queue a task to write out the output sections which depend on
+ // input sections.
+ final_blocker->add_blocker();
+ workqueue->queue(new Write_after_input_sections_task(layout, of,
+ input_sections_blocker,
+ final_blocker));
// Queue a task to close the output file. This will be blocked by
// FINAL_BLOCKER.
}
} // End namespace gold.
-
-using namespace gold;
-
-int
-main(int argc, char** argv)
-{
-#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
- setlocale (LC_MESSAGES, "");
-#endif
-#if defined (HAVE_SETLOCALE)
- setlocale (LC_CTYPE, "");
-#endif
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- gold::program_name = argv[0];
-
- // Handle the command line options.
- gold::Command_line command_line;
- command_line.process(argc - 1, argv + 1);
-
- // The work queue.
- gold::Workqueue workqueue(command_line.options());
-
- // The list of input objects.
- Input_objects input_objects;
-
- // The symbol table.
- Symbol_table symtab;
-
- // The layout object.
- Layout layout(command_line.options());
-
- // Get the search path from the -L options.
- Dirsearch search_path;
- search_path.add(&workqueue, command_line.options().search_path());
-
- // Queue up the first set of tasks.
- queue_initial_tasks(command_line.options(), search_path,
- command_line, &workqueue, &input_objects,
- &symtab, &layout);
-
- // Run the main task processing loop.
- workqueue.process();
-
- gold::gold_exit(true);
-}
projects / deliverable / binutils-gdb.git / blobdiff