--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/debug.c	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,114 @@
+/* Do-nothing debug hooks for GCC.
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008
+   Free Software Foundation, Inc.
+
+   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, 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; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "debug.h"
+
+/* The do-nothing debug hooks.  */
+const struct gcc_debug_hooks do_nothing_debug_hooks =
+{
+  debug_nothing_charstar,
+  debug_nothing_charstar,
+  debug_nothing_int_charstar,
+  debug_nothing_int_charstar,
+  debug_nothing_int_charstar,
+  debug_nothing_int,
+  debug_nothing_int_int,	         /* begin_block */
+  debug_nothing_int_int,	         /* end_block */
+  debug_true_const_tree,	         /* ignore_block */
+  debug_nothing_int_charstar,	         /* source_line */
+  debug_nothing_int_charstar,	         /* begin_prologue */
+  debug_nothing_int_charstar,	         /* end_prologue */
+  debug_nothing_int_charstar,	         /* end_epilogue */
+  debug_nothing_tree,		         /* begin_function */
+  debug_nothing_int,		         /* end_function */
+  debug_nothing_tree,		         /* function_decl */
+  debug_nothing_tree,		         /* global_decl */
+  debug_nothing_tree_int,		 /* type_decl */
+  debug_nothing_tree_tree_tree_bool,	 /* imported_module_or_decl */
+  debug_nothing_tree,		         /* deferred_inline_function */
+  debug_nothing_tree,		         /* outlining_inline_function */
+  debug_nothing_rtx,		         /* label */
+  debug_nothing_int,		         /* handle_pch */
+  debug_nothing_rtx,		         /* var_location */
+  debug_nothing_void,                    /* switch_text_section */
+  0                                      /* start_end_main_source_file */
+};
+
+/* This file contains implementations of each debug hook that do
+   nothing.  */
+
+void
+debug_nothing_void (void)
+{
+}
+
+void
+debug_nothing_tree (tree decl ATTRIBUTE_UNUSED)
+{
+}
+
+void
+debug_nothing_tree_tree_tree_bool (tree t1 ATTRIBUTE_UNUSED,
+				   tree t2 ATTRIBUTE_UNUSED,
+				   tree t3 ATTRIBUTE_UNUSED,
+				   bool b1 ATTRIBUTE_UNUSED)
+{
+}
+
+bool
+debug_true_const_tree (const_tree block ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+void
+debug_nothing_rtx (rtx insn ATTRIBUTE_UNUSED)
+{
+}
+
+void
+debug_nothing_charstar (const char *main_filename ATTRIBUTE_UNUSED)
+{
+}
+
+void
+debug_nothing_int_charstar (unsigned int line ATTRIBUTE_UNUSED,
+			    const char *text ATTRIBUTE_UNUSED)
+{
+}
+
+void
+debug_nothing_int (unsigned int line ATTRIBUTE_UNUSED)
+{
+}
+
+void
+debug_nothing_int_int (unsigned int line ATTRIBUTE_UNUSED,
+		       unsigned int n ATTRIBUTE_UNUSED)
+{
+}
+
+void
+debug_nothing_tree_int (tree decl ATTRIBUTE_UNUSED,
+			int local ATTRIBUTE_UNUSED)
+{
+}