Imported binutils-2.20

[msp430-binutils.git] / gold / parameters.cc

diff --git a/gold/parameters.cc b/gold/parameters.cc
new file mode 100644 (file)
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--- /dev/null
+++ b/gold/parameters.cc
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+// parameters.cc -- general parameters for a link using gold
+
+// Copyright 2006, 2007, 2008 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 "target.h"
+#include "target-select.h"
+
+namespace gold
+{
+
+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)
+{
+  if (!this->target_valid())
+    this->target_ = target;
+  else
+    gold_assert(target == this->target_);
+}
+
+// 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
+    gold_unreachable();
+}
+
+
+// Our local version of the variable, which is not const.
+
+static Parameters static_parameters;
+
+// The global variable.
+
+const Parameters* parameters = &static_parameters;
+
+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); }
+
+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;
+       }
+
+      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);
+}
+
+// Clear the current target, for testing.
+
+void
+parameters_clear_target()
+{
+  static_parameters.clear_target();
+}
+
+} // End namespace gold.