* incremental.cc (Incremental_inputs_header_data): Renamed from

Incremental_input_header_data.
	(Incremental_inputs_header_data::data_size): New field.
	(Incremental_inputs_header_data::put_input_file_count): Renamed
	from input_file_count.
	(Incremental_inputs_header_data::put_command_line_offset): Renamed
	from command_line_offset.
	(Incremental_inputs_header_data::put_reserved): Renamed from
	put_reserved.
	(Incremental_inputs_entry_data): Renamed from
	Incremental_input_entry_data.
	(Incremental_inputs_entry_data::data_size): New field.
	(Incremental_inputs::report_command_line): New method.
	(Incremental_inputs::finalize): New method.
	(Incremental_inputs::create_incremental_inputs_data): New method.
	(Incremental_inputs::sized_create_incremental_inputs_data): New method.
	* incremental.h: New file.
	* layout.cc (Layout::Layout): Handle new incremental_inputs_.
       (Layout::finalize): Create incremental inputs section in
	incremental builds.
       (Layout::create_incremental_info_sections): New method.
	* layout.h (Layout::incremental_inputs): New method.
       (Layout::create_incremental_info_sections): New method.
       (Layout::incremental_inputs_): New field.
	* main.cc (main): Notify Incremental_input of the command line.

gold/incremental.h

@@ -0,0 +1,82 @@
+// inremental.h -- incremental linking support for gold   -*- C++ -*-
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Mikolaj Zalewski <mikolajz@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_INCREMENTAL_H
+#define GOLD_INCREMENTAL_H
+
+#include <vector>
+
+#include "stringpool.h"
+#include "workqueue.h"
+
+namespace gold
+{
+
+class Archive;
+class Input_argument;
+class Incremental_inputs_checker;
+class Object;
+class Output_section_data;
+
+// This class contains the information needed during an incremental
+// build about the inputs necessary to build the .gnu_incremental_inputs.
+class Incremental_inputs
+{
+ public:
+  Incremental_inputs()
+    : command_line_key_(0), strtab_(new Stringpool())
+  { }
+  ~Incremental_inputs() { delete this->strtab_; }
+
+  // Record the command line.
+  void
+  report_command_line(int argc, const char* const* argv);
+  
+  // Prepare for layout.  Called from Layout::finalize.
+  void
+  finalize();
+
+  // Create the content of the .gnu_incremental_inputs section.
+  Output_section_data*
+  create_incremental_inputs_section_data();
+  
+  // Return the .gnu_incremental_strtab stringpool. 
+  Stringpool*
+  get_stringpool()
+  { return this->strtab_; }
+
+ private:
+  // Code for each of the four possible variants of create_inputs_section_data.
+  template<int size, bool big_endian>
+  Output_section_data*
+  sized_create_inputs_section_data();  
+
+  // The key of the command line string in the string pool.
+  Stringpool::Key command_line_key_;
+  // The .gnu_incremental_strtab string pool associated with the
+  // .gnu_incremental_inputs.
+  Stringpool* strtab_;
+};
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_INCREMENTAL_H)