--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/h8300/clzhi2.c	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,35 @@
+/* The implementation of __clzhi2.
+   Copyright (C) 2003, 2009  Free Software Foundation, Inc.
+
+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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+int __clzhi2 (unsigned short x);
+
+int
+__clzhi2 (unsigned short x)
+{
+  int i;
+  for (i = 0; i < 16; i++)
+    if (x & ((unsigned short) 1 << (15 - i)))
+      break;
+  return i;
+}