Add global parameters.

1 files changed, 70 insertions, 0 deletions

diff --git a/gold/parameters.h b/gold/parameters.h
new file mode 100644
index 00000000000..040cc28d4c3
--- /dev/null
+++ b/gold/parameters.h
@@ -0,0 +1,70 @@
+// parameters.h -- general parameters for a link using gold  -*- C++ -*-
+
+#ifndef GOLD_PARAMETERS_H
+#define GOLD_PARAMETERS_H
+
+namespace gold
+{
+
+class General_options;
+
+// Here we define the Parameters class which simply holds simple
+// general parameters which apply to the entire link.  We use a global
+// variable for this.  This is in contrast to the General_options
+// class, which holds the complete state of position independent
+// command line options.  The hope is that Parameters will stay fairly
+// simple, so that if this turns into a library it will be clear how
+// these parameters should be set.
+
+class Parameters
+{
+ public:
+  Parameters(const General_options*);
+
+  // Whether we are generating a regular executable.
+  bool
+  output_is_executable() const
+  { return this->output_file_type_ == OUTPUT_EXECUTABLE; }
+
+  // Whether we are generating a shared library.
+  bool
+  output_is_shared() const
+  { return this->output_file_type_ == OUTPUT_SHARED; }
+
+  // Whether we are generating an object file.
+  bool
+  output_is_object() const
+  { return this->output_file_type_ == OUTPUT_OBJECT; }
+
+  // The general linker optimization level.
+  int
+  optimization_level() const
+  { return this->optimization_level_; }
+
+ private:
+  // The types of output files.
+  enum Output_file_type
+    {
+      // Generating executable.
+      OUTPUT_EXECUTABLE,
+      // Generating shared library.
+      OUTPUT_SHARED,
+      // Generating object file.
+      OUTPUT_OBJECT
+    };
+
+  // The type of the output file.
+  Output_file_type output_file_type_;
+  // The optimization level.
+  int optimization_level_;
+};
+
+// This is a global variable.
+extern const Parameters* parameters;
+
+// Initialize the global variable.
+extern void initialize_parameters(const General_options*);
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_PARAMATERS_H)