// readsyms.cc -- read input file symbols for gold
-// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
#include "archive.h"
#include "script.h"
#include "readsyms.h"
+#include "plugin.h"
+#include "layout.h"
+#include "incremental.h"
namespace gold
{
// Add_symbols task.
}
+// If appropriate, issue a warning about skipping an incompatible
+// file.
+
+void
+Read_symbols::incompatible_warning(const Input_argument* input_argument,
+ const Input_file* input_file)
+{
+ if (parameters->options().warn_search_mismatch())
+ gold_warning("skipping incompatible %s while searching for %s",
+ input_file->filename().c_str(),
+ input_argument->file().name());
+}
+
+// Requeue a Read_symbols task to search for the next object with the
+// same name.
+
+void
+Read_symbols::requeue(Workqueue* workqueue, Input_objects* input_objects,
+ Symbol_table* symtab, Layout* layout, Dirsearch* dirpath,
+ int dirindex, Mapfile* mapfile,
+ const Input_argument* input_argument,
+ Input_group* input_group, Task_token* next_blocker)
+{
+ // Bump the directory search index.
+ ++dirindex;
+
+ // We don't need to worry about this_blocker, since we already
+ // reached it. However, we are removing the blocker on next_blocker
+ // because the calling task is completing. So we need to add a new
+ // blocker. Since next_blocker may be shared by several tasks, we
+ // need to increment the count with the workqueue lock held.
+ workqueue->add_blocker(next_blocker);
+
+ workqueue->queue(new Read_symbols(input_objects, symtab, layout, dirpath,
+ dirindex, mapfile, input_argument,
+ input_group, NULL, next_blocker));
+}
+
// Return whether a Read_symbols task is runnable. We can read an
// ordinary input file immediately. For an archive specified using
// -l, we have to wait until the search path is complete.
}
Input_file* input_file = new Input_file(&this->input_argument_->file());
- if (!input_file->open(this->options_, *this->dirpath_, this))
+ if (!input_file->open(*this->dirpath_, this, &this->dirindex_))
return false;
// Read enough of the file to pick up the entire ELF header.
return false;
}
- int read_size = elfcpp::Elf_sizes<64>::ehdr_size;
- if (filesize < read_size)
- read_size = filesize;
-
- const unsigned char* ehdr = input_file->file().get_view(0, 0, read_size,
- true, false);
-
- if (read_size >= 4)
- {
- static unsigned char elfmagic[4] =
- {
- elfcpp::ELFMAG0, elfcpp::ELFMAG1,
- elfcpp::ELFMAG2, elfcpp::ELFMAG3
- };
- if (memcmp(ehdr, elfmagic, 4) == 0)
- {
- // This is an ELF object.
-
- Object* obj = make_elf_object(input_file->filename(),
- input_file, 0, ehdr, read_size);
- if (obj == NULL)
- return false;
-
- Read_symbols_data* sd = new Read_symbols_data;
- obj->read_symbols(sd);
-
- // Opening the file locked it, so now we need to unlock it.
- // We need to unlock it before queuing the Add_symbols task,
- // because the workqueue doesn't know about our lock on the
- // file. If we queue the Add_symbols task first, it will be
- // stuck on the end of the file lock, but since the
- // workqueue doesn't know about that lock, it will never
- // release the Add_symbols task.
-
- input_file->file().unlock(this);
-
- // We use queue_next because everything is cached for this
- // task to run right away if possible.
-
- workqueue->queue_next(new Add_symbols(this->input_objects_,
- this->symtab_, this->layout_,
- obj, sd,
- this->this_blocker_,
- this->next_blocker_));
-
- return true;
- }
- }
+ const unsigned char* ehdr;
+ int read_size;
+ bool is_elf = is_elf_object(input_file, 0, &ehdr, &read_size);
if (read_size >= Archive::sarmag)
{
bool is_thin_archive
= memcmp(ehdr, Archive::armagt, Archive::sarmag) == 0;
- if (is_thin_archive
+ if (is_thin_archive
|| memcmp(ehdr, Archive::armag, Archive::sarmag) == 0)
{
// This is an archive.
Archive* arch = new Archive(this->input_argument_->file().name(),
input_file, is_thin_archive,
this->dirpath_, this);
- arch->setup(this->input_objects_);
-
+ arch->setup();
+
+ if (this->layout_->incremental_inputs())
+ {
+ const Input_argument* ia = this->input_argument_;
+ this->layout_->incremental_inputs()->report_archive(ia, arch);
+ }
+
// Unlock the archive so it can be used in the next task.
arch->unlock(this);
workqueue->queue_next(new Add_archive_symbols(this->symtab_,
this->layout_,
this->input_objects_,
+ this->dirpath_,
+ this->dirindex_,
this->mapfile_,
+ this->input_argument_,
arch,
this->input_group_,
this->this_blocker_,
}
}
+ if (parameters->options().has_plugins())
+ {
+ Pluginobj* obj = parameters->options().plugins()->claim_file(input_file,
+ 0, filesize);
+ if (obj != NULL)
+ {
+ // The input file was claimed by a plugin, and its symbols
+ // have been provided by the plugin.
+
+ // We are done with the file at this point, so unlock it.
+ obj->unlock(this);
+
+ workqueue->queue_next(new Add_symbols(this->input_objects_,
+ this->symtab_,
+ this->layout_,
+ this->dirpath_,
+ this->dirindex_,
+ this->mapfile_,
+ this->input_argument_,
+ this->input_group_,
+ obj,
+ NULL,
+ this->this_blocker_,
+ this->next_blocker_));
+ return true;
+ }
+ }
+
+ if (is_elf)
+ {
+ // This is an ELF object.
+
+ bool unconfigured;
+ Object* obj = make_elf_object(input_file->filename(),
+ input_file, 0, ehdr, read_size,
+ &unconfigured);
+ if (obj == NULL)
+ {
+ if (unconfigured && input_file->will_search_for())
+ {
+ Read_symbols::incompatible_warning(this->input_argument_,
+ input_file);
+ input_file->file().release();
+ input_file->file().unlock(this);
+ delete input_file;
+ ++this->dirindex_;
+ return this->do_read_symbols(workqueue);
+ }
+ return false;
+ }
+
+ Read_symbols_data* sd = new Read_symbols_data;
+ obj->read_symbols(sd);
+
+ if (this->layout_->incremental_inputs())
+ {
+ const Input_argument* ia = this->input_argument_;
+ this->layout_->incremental_inputs()->report_object(ia, obj);
+ }
+
+ // Opening the file locked it, so now we need to unlock it. We
+ // need to unlock it before queuing the Add_symbols task,
+ // because the workqueue doesn't know about our lock on the
+ // file. If we queue the Add_symbols task first, it will be
+ // stuck on the end of the file lock, but since the workqueue
+ // doesn't know about that lock, it will never release the
+ // Add_symbols task.
+
+ input_file->file().unlock(this);
+
+ // We use queue_next because everything is cached for this
+ // task to run right away if possible.
+
+ workqueue->queue_next(new Add_symbols(this->input_objects_,
+ this->symtab_, this->layout_,
+ this->dirpath_,
+ this->dirindex_,
+ this->mapfile_,
+ this->input_argument_,
+ this->input_group_,
+ obj,
+ sd,
+ this->this_blocker_,
+ this->next_blocker_));
+
+ return true;
+ }
+
// Queue up a task to try to parse this file as a script. We use a
// separate task so that the script will be read in order with other
// objects named on the command line. Also so that we don't try to
// read multiple scripts simultaneously, which could lead to
// unpredictable changes to the General_options structure.
- workqueue->queue_soon(new Read_script(this->options_,
- this->symtab_,
+ workqueue->queue_soon(new Read_script(this->symtab_,
this->layout_,
this->dirpath_,
+ this->dirindex_,
this->input_objects_,
this->mapfile_,
this->input_group_,
Task_token* next_blocker = new Task_token(true);
next_blocker->add_blocker();
- workqueue->queue_soon(new Read_symbols(this->options_,
- this->input_objects_,
+ workqueue->queue_soon(new Read_symbols(this->input_objects_,
this->symtab_, this->layout_,
- this->dirpath_, this->mapfile_,
- arg, input_group,
+ this->dirpath_, this->dirindex_,
+ this->mapfile_, arg, input_group,
this_blocker, next_blocker));
this_blocker = next_blocker;
}
// Add the symbols in the object to the symbol table.
void
-Add_symbols::run(Workqueue*)
+Add_symbols::run(Workqueue* workqueue)
{
- if (!this->input_objects_->add_object(this->object_))
+ Pluginobj* pluginobj = this->object_->pluginobj();
+ if (pluginobj != NULL)
{
- // FIXME: We need to close the descriptor here.
+ this->object_->add_symbols(this->symtab_, this->sd_, this->layout_);
+ return;
+ }
+
+ // If this file has an incompatible format, try for another file
+ // with the same name.
+ if (this->object_->searched_for()
+ && !parameters->is_compatible_target(this->object_->target()))
+ {
+ Read_symbols::incompatible_warning(this->input_argument_,
+ this->object_->input_file());
+ Read_symbols::requeue(workqueue, this->input_objects_, this->symtab_,
+ this->layout_, this->dirpath_, this->dirindex_,
+ this->mapfile_, this->input_argument_,
+ this->input_group_, this->next_blocker_);
+ this->object_->release();
+ delete this->object_;
+ }
+ else if (!this->input_objects_->add_object(this->object_))
+ {
+ this->object_->release();
delete this->object_;
}
else
{
this->object_->layout(this->symtab_, this->layout_, this->sd_);
- this->object_->add_symbols(this->symtab_, this->sd_);
+ this->object_->add_symbols(this->symtab_, this->sd_, this->layout_);
this->object_->release();
}
delete this->sd_;
Read_script::run(Workqueue* workqueue)
{
bool used_next_blocker;
- if (!read_input_script(workqueue, this->options_, this->symtab_,
- this->layout_, this->dirpath_, this->input_objects_,
+ if (!read_input_script(workqueue, this->symtab_, this->layout_,
+ this->dirpath_, this->dirindex_, this->input_objects_,
this->mapfile_, this->input_group_,
this->input_argument_, this->input_file_,
this->next_blocker_, &used_next_blocker))
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