// parameters.cc -- general parameters for a link using gold
+// Copyright 2006, 2007, 2008, 2009, 2010 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 "debug.h"
#include "options.h"
-#include "parameters.h"
+#include "target.h"
+#include "target-select.h"
namespace gold
{
-// Initialize the parameters from the options.
+// Our local version of the variable, which is not const.
+
+static Parameters static_parameters;
+
+// The global variable.
+
+const Parameters* parameters = &static_parameters;
-Parameters::Parameters(const General_options* options)
- : optimization_level_(options->optimization_level())
+// A helper class to set the target once.
+
+class Set_parameters_target_once : public Once
{
- if (options->is_shared())
- this->output_file_type_ = OUTPUT_SHARED;
- else if (options->is_relocatable())
- this->output_file_type_ = OUTPUT_OBJECT;
+ public:
+ Set_parameters_target_once(Parameters* parameters)
+ : parameters_(parameters)
+ { }
+
+ protected:
+ void
+ do_run_once(void* arg)
+ { this->parameters_->set_target_once(static_cast<Target*>(arg)); }
+
+ private:
+ Parameters* parameters_;
+};
+
+// We only need one Set_parameters_target_once.
+
+static
+Set_parameters_target_once set_parameters_target_once(&static_parameters);
+
+// Class Parameters.
+
+Parameters::Parameters()
+ : errors_(NULL), options_(NULL), target_(NULL),
+ doing_static_link_valid_(false), doing_static_link_(false),
+ debug_(0),
+ set_parameters_target_once_(&set_parameters_target_once)
+ {
+ }
+
+void
+Parameters::set_errors(Errors* errors)
+{
+ gold_assert(this->errors_ == NULL);
+ this->errors_ = errors;
+}
+
+void
+Parameters::set_options(const General_options* options)
+{
+ gold_assert(!this->options_valid());
+ this->options_ = options;
+ // For speed, we convert the options() debug var from a string to an
+ // enum (from debug.h).
+ this->debug_ = debug_string_to_enum(this->options().debug());
+ // If --verbose is set, it acts as "--debug=files".
+ if (options->verbose())
+ this->debug_ |= DEBUG_FILES;
+}
+
+void
+Parameters::set_doing_static_link(bool doing_static_link)
+{
+ gold_assert(!this->doing_static_link_valid_);
+ this->doing_static_link_ = doing_static_link;
+ this->doing_static_link_valid_ = true;
+}
+
+void
+Parameters::set_target(Target* target)
+{
+ this->set_parameters_target_once_->run_once(static_cast<void*>(target));
+ gold_assert(target == this->target_);
+}
+
+// This is called at most once.
+
+void
+Parameters::set_target_once(Target* target)
+{
+ gold_assert(this->target_ == NULL);
+ this->target_ = target;
+}
+
+// Clear the target, for testing.
+
+void
+Parameters::clear_target()
+{
+ this->target_ = NULL;
+ // We need a new Set_parameters_target_once so that we can set the
+ // target again.
+ this->set_parameters_target_once_ = new Set_parameters_target_once(this);
+}
+
+// Return whether TARGET is compatible with the target we are using.
+
+bool
+Parameters::is_compatible_target(const Target* target) const
+{
+ if (this->target_ == NULL)
+ return true;
+ return target == this->target_;
+}
+
+Parameters::Target_size_endianness
+Parameters::size_and_endianness() const
+{
+ if (this->target().get_size() == 32)
+ {
+ if (!this->target().is_big_endian())
+ {
+#ifdef HAVE_TARGET_32_LITTLE
+ return TARGET_32_LITTLE;
+#else
+ gold_unreachable();
+#endif
+ }
+ else
+ {
+#ifdef HAVE_TARGET_32_BIG
+ return TARGET_32_BIG;
+#else
+ gold_unreachable();
+#endif
+ }
+ }
+ else if (parameters->target().get_size() == 64)
+ {
+ if (!parameters->target().is_big_endian())
+ {
+#ifdef HAVE_TARGET_64_LITTLE
+ return TARGET_64_LITTLE;
+#else
+ gold_unreachable();
+#endif
+ }
+ else
+ {
+#ifdef HAVE_TARGET_64_BIG
+ return TARGET_64_BIG;
+#else
+ gold_unreachable();
+#endif
+ }
+ }
else
- this->output_file_type_ = OUTPUT_EXECUTABLE;
+ gold_unreachable();
}
-// The global variable.
+void
+set_parameters_errors(Errors* errors)
+{ static_parameters.set_errors(errors); }
+
+void
+set_parameters_options(const General_options* options)
+{ static_parameters.set_options(options); }
+
+void
+set_parameters_target(Target* target)
+{
+ static_parameters.set_target(target);
+ target->select_as_default_target();
+}
+
+void
+set_parameters_doing_static_link(bool doing_static_link)
+{ static_parameters.set_doing_static_link(doing_static_link); }
+
+// Force the target to be valid by using the default. Use the
+// --oformat option is set; this supports the x86_64 kernel build,
+// which converts a binary file to an object file using -r --format
+// binary --oformat elf32-i386 foo.o. Otherwise use the configured
+// default.
+
+void
+parameters_force_valid_target()
+{
+ if (parameters->target_valid())
+ return;
+
+ gold_assert(parameters->options_valid());
+ if (parameters->options().user_set_oformat())
+ {
+ Target* target = select_target_by_name(parameters->options().oformat());
+ if (target != NULL)
+ {
+ set_parameters_target(target);
+ return;
+ }
-const Parameters* parameters;
+ gold_error(_("unrecognized output format %s"),
+ parameters->options().oformat());
+ }
+
+ // The GOLD_DEFAULT_xx macros are defined by the configure script.
+ Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE,
+ GOLD_DEFAULT_SIZE,
+ GOLD_DEFAULT_BIG_ENDIAN,
+ elfcpp::GOLD_DEFAULT_OSABI,
+ 0);
+ gold_assert(target != NULL);
+ set_parameters_target(target);
+}
-// Initialize the global variable.
+// Clear the current target, for testing.
void
-initialize_parameters(const General_options* options)
+parameters_clear_target()
{
- parameters = new Parameters(options);
+ static_parameters.clear_target();
}
} // End namespace gold.
projects / binutils-gdb.git / blobdiff