// parameters.cc -- general parameters for a link using gold
-// Copyright 2006, 2007, 2008, 2009 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.
namespace gold
{
+// Our local version of the variable, which is not const.
+
+static Parameters static_parameters;
+
+// The global variable.
+
+const Parameters* parameters = &static_parameters;
+
+// A helper class to set the target once.
+
+class Set_parameters_target_once : public Once
+{
+ 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* errs)
+Parameters::set_errors(Errors* errors)
{
gold_assert(this->errors_ == NULL);
- this->errors_ = errs;
+ this->errors_ = errors;
}
void
-Parameters::set_options(const General_options* opts)
+Parameters::set_options(const General_options* options)
{
gold_assert(!this->options_valid());
- this->options_ = opts;
+ 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 (opts->verbose())
+ if (options->verbose())
this->debug_ |= DEBUG_FILES;
+ if (this->target_valid())
+ this->check_target_endianness();
}
void
-Parameters::set_doing_static_link(bool doing_staticlink)
+Parameters::set_doing_static_link(bool doing_static_link)
{
gold_assert(!this->doing_static_link_valid_);
- this->doing_static_link_ = doing_staticlink;
+ this->doing_static_link_ = doing_static_link;
this->doing_static_link_valid_ = true;
}
void
-Parameters::set_target(Target* targ)
+Parameters::set_target(Target* target)
{
- if (!this->target_valid())
- this->target_ = targ;
- else
- gold_assert(targ == this->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;
+ if (this->options_valid())
+ this->check_target_endianness();
+}
+
+// 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* targ) const
+Parameters::is_compatible_target(const Target* target) const
{
if (this->target_ == NULL)
return true;
- return targ == this->target_;
+ return target == this->target_;
}
Parameters::Target_size_endianness
gold_unreachable();
}
+// If output endianness is specified in command line, check that it does
+// not conflict with the target.
-// Our local version of the variable, which is not const.
-
-static Parameters static_parameters;
-
-// The global variable.
-
-const Parameters* parameters = &static_parameters;
+void
+Parameters::check_target_endianness()
+{
+ General_options::Endianness endianness = this->options().endianness();
+ if (endianness != General_options::ENDIANNESS_NOT_SET)
+ {
+ bool big_endian;
+ if (endianness == General_options::ENDIANNESS_BIG)
+ big_endian = true;
+ else
+ {
+ gold_assert(endianness == General_options::ENDIANNESS_LITTLE);
+ big_endian = false;;
+ }
+
+ if (this->target().is_big_endian() != big_endian)
+ gold_error(_("input file does not match -EB/EL option"));
+ }
+}
void
set_parameters_errors(Errors* errors)
void
set_parameters_target(Target* target)
-{ static_parameters.set_target(target); }
+{
+ static_parameters.set_target(target);
+ target->select_as_default_target();
+}
void
set_parameters_doing_static_link(bool doing_static_link)
}
// The GOLD_DEFAULT_xx macros are defined by the configure script.
+ bool is_big_endian;
+ General_options::Endianness endianness = parameters->options().endianness();
+ if (endianness == General_options::ENDIANNESS_BIG)
+ is_big_endian = true;
+ else if (endianness == General_options::ENDIANNESS_LITTLE)
+ is_big_endian = false;
+ else
+ is_big_endian = GOLD_DEFAULT_BIG_ENDIAN;
+
Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE,
GOLD_DEFAULT_SIZE,
- GOLD_DEFAULT_BIG_ENDIAN,
+ is_big_endian,
elfcpp::GOLD_DEFAULT_OSABI,
0);
gold_assert(target != NULL);