--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/highlev-plugin-common.h	Fri Feb 12 23:39:51 2010 +0900
@@ -0,0 +1,33 @@
+/* Interface for high-level plugins in GCC - Parts common between GCC,
+   ICI and high-level plugins.
+
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   Contributed by INRIA.
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef HIGHLEV_PLUGIN_COMMON_H
+#define HIGHLEV_PLUGIN_COMMON_H
+
+/* Return codes for invoke_plugin_callbacks / call_plugin_event .  */
+#define PLUGEVT_SUCCESS         0
+#define PLUGEVT_NO_EVENTS       1
+#define PLUGEVT_NO_SUCH_EVENT   2
+#define PLUGEVT_NO_CALLBACK     3
+
+#endif /* HIGHLEV_PLUGIN_COMMON_H */