--- /dev/null
+// parameters.h -- general parameters for a link using gold -*- C++ -*-
+
+// 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.
+
+#ifndef GOLD_PARAMETERS_H
+#define GOLD_PARAMETERS_H
+
+namespace gold
+{
+
+class General_options;
+class Errors;
+class Target;
+template<int size, bool big_endian>
+class Sized_target;
+
+// 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. The parameters class holds three types of data:
+// 1) An Errors struct. Any part of the code that wants to log an
+// error can use parameters->errors().
+// 2) A const General_options. These are the options as read on
+// the commandline.
+// 3) Target information, such as size and endian-ness. This is
+// available as soon as we've decided on the Target (after
+// parsing the first .o file).
+// 4) Whether we're doing a static link or not. This is set
+// after all inputs have been read and we know if any is a
+// dynamic library.
+
+class Parameters
+{
+ public:
+ Parameters()
+ : errors_(NULL), options_(NULL), target_(NULL),
+ doing_static_link_valid_(false), doing_static_link_(false),
+ debug_(0)
+ { }
+
+ // These should be called as soon as they are known.
+ void
+ set_errors(Errors* errors);
+
+ void
+ set_options(const General_options* options);
+
+ void
+ set_target(Target* target);
+
+ void
+ set_doing_static_link(bool doing_static_link);
+
+ // Return the error object.
+ Errors*
+ errors() const
+ { return this->errors_; }
+
+ // Whether the options are valid. This should not normally be
+ // called, but it is needed by gold_exit.
+ bool
+ options_valid() const
+ { return this->options_ != NULL; }
+
+ // Return the options object.
+ const General_options&
+ options() const
+ {
+ gold_assert(this->options_valid());
+ return *this->options_;
+ }
+
+ // Return whether the target field has been set.
+ bool
+ target_valid() const
+ { return this->target_ != NULL; }
+
+ // The target of the output file we are generating.
+ const Target&
+ target() const
+ {
+ gold_assert(this->target_valid());
+ return *this->target_;
+ }
+
+ // The Sized_target of the output file. The caller must request the
+ // right size and endianness.
+ template<int size, bool big_endian>
+ Sized_target<size, big_endian>*
+ sized_target() const
+ {
+ gold_assert(this->target_valid());
+ return static_cast<Sized_target<size, big_endian>*>(this->target_);
+ }
+
+ // Clear the target, for testing.
+ void
+ clear_target()
+ { this->target_ = NULL; }
+
+ // Return true if TARGET is compatible with the current target.
+ bool
+ is_compatible_target(const Target*) const;
+
+ bool
+ doing_static_link() const
+ {
+ gold_assert(this->doing_static_link_valid_);
+ return this->doing_static_link_;
+ }
+
+ // This is just a copy of options().debug(). We make a copy so we
+ // don't have to #include options.h in order to inline
+ // is_debugging_enabled, below.
+ int
+ debug() const
+ {
+ // This can be called before the options are set up.
+ if (!this->options_valid())
+ return 0;
+ return debug_;
+ }
+
+ // A convenience routine for combining size and endianness. It also
+ // checks the HAVE_TARGET_FOO configure options and dies if the
+ // current target's size/endianness is not supported according to
+ // HAVE_TARGET_FOO. Otherwise it returns this enum
+ enum Target_size_endianness
+ { TARGET_32_LITTLE, TARGET_32_BIG, TARGET_64_LITTLE, TARGET_64_BIG };
+
+ Target_size_endianness
+ size_and_endianness() const;
+
+
+ private:
+ Errors* errors_;
+ const General_options* options_;
+ Target* target_;
+ bool doing_static_link_valid_;
+ bool doing_static_link_;
+ int debug_;
+};
+
+// This is a global variable.
+extern const Parameters* parameters;
+
+// We use free functions for these since they affect a global variable
+// that is internal to parameters.cc.
+
+extern void
+set_parameters_errors(Errors* errors);
+
+extern void
+set_parameters_options(const General_options* options);
+
+extern void
+set_parameters_target(Target* target);
+
+extern void
+set_parameters_doing_static_link(bool doing_static_link);
+
+// Ensure that the target to be valid by using the default target if
+// necessary.
+
+extern void
+parameters_force_valid_target();
+
+// Clear the current target, for testing.
+
+extern void
+parameters_clear_target();
+
+// Return whether we are doing a particular debugging type. The
+// argument is one of the flags from debug.h.
+
+inline bool
+is_debugging_enabled(unsigned int type)
+{ return (parameters->debug() & type) != 0; }
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_PARAMETERS_H)
projects / msp430-binutils.git / blobdiff