Index: include/debug.h
===================================================================
--- include/debug.h	(revision 695152600d28f705d91e1ea909811028ae75ce3f)
+++ include/debug.h	(revision 695152600d28f705d91e1ea909811028ae75ce3f)
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2001-2004 Martin Decky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DEBUG_H__
+#define __DEBUG_H__
+
+#include <panic.h>
+
+
+/** Debugging ASSERT macro
+ *
+ * If NDEBUG is not set, the ASSERT() macro
+ * evaluates expr and if it is false raises
+ * kernel panic.
+ *
+ * @param expr Expression which is expected to be true.
+ *
+ */
+#ifndef NDEBUG
+#	define ASSERT(expr) if (!(expr)) { panic("assertion failed (%s)\n", #expr); }
+#else
+#	define ASSERT(expr)
+#endif
+
+#endif