2009-01-20 Sriraman Tallam <tmsriram@google.com>

[deliverable/binutils-gdb.git] / gold / parameters.cc

diff --git a/gold/parameters.cc b/gold/parameters.cc
index 462eeea8b9b9ca40a7a360526f3fc97798d64caf..729305116aad78086d58ac1cff81c0abb17a312d 100644 (file)
--- a/gold/parameters.cc
+++ b/gold/parameters.cc
@@ -1,6 +1,6 @@
 // parameters.cc -- general parameters for a link using gold
 
-// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -22,35 +22,149 @@
 
 #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.
+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;
+}
 
-Parameters::Parameters(const General_options* options)
-  : optimization_level_(options->optimization_level())
+void
+Parameters::set_target(const Target* target)
 {
-  if (options->is_shared())
-    this->output_file_type_ = OUTPUT_SHARED;
-  else if (options->is_relocatable())
-    this->output_file_type_ = OUTPUT_OBJECT;
+  if (!this->target_valid())
+    this->target_ = target;
   else
-    this->output_file_type_ = OUTPUT_EXECUTABLE;
+    gold_assert(target == this->target_);
 }
 
-// The global variable.
+// The x86_64 kernel build converts a binary file to an object file
+// using -r --format binary --oformat elf32-i386 foo.o.  In order to
+// support that for gold we support determining the default target
+// choice from the output format.  We recognize names that the GNU
+// linker uses.
 
-const Parameters* parameters;
+const Target&
+Parameters::default_target() const
+{
+  gold_assert(this->options_valid());
+  if (this->options().user_set_oformat())
+    {
+      const Target* target
+          = select_target_by_name(this->options().oformat());
+      if (target != NULL)
+       return *target;
 
-// Initialize the global variable.
+      gold_error(_("unrecognized output format %s"),
+                 this->options().oformat());
+    }
 
-void
-initialize_parameters(const General_options* options)
+  // The GOLD_DEFAULT_xx macros are defined by the configure script.
+  const Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE,
+                                       GOLD_DEFAULT_SIZE,
+                                       GOLD_DEFAULT_BIG_ENDIAN,
+                                       0, 0);
+  gold_assert(target != NULL);
+  return *target;
+}
+
+Parameters::Target_size_endianness
+Parameters::size_and_endianness() const
 {
-  parameters = new Parameters(options);
+  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(const 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); }
+
 } // End namespace gold.