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+/*
+ * Copyright (c) 1993,1994 The University of Utah and
+ * the Computer Systems Laboratory (CSL). All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ * Author: Bryan Ford, University of Utah CSL
+ */
+/*
+ * File: debug.h
+ * Author: Bryan Ford
+ *
+ * This file contains definitions for kernel debugging,
+ * which are compiled in on the DEBUG symbol.
+ *
+ */
+#ifndef _mach_debug__debug_
+#define _mach_debug__debug_
+
+#include <kern/assert.h> /*XXX*/
+
+#ifdef DEBUG
+
+#define here() printf("@ %s:%d\n", __FILE__, __LINE__)
+#define message(args) ({ printf("@ %s:%d: ", __FILE__, __LINE__); printf args; printf("\n"); })
+
+#define otsan() panic("%s:%d: off the straight and narrow!", __FILE__, __LINE__)
+
+#define struct_id_decl unsigned struct_id;
+#define struct_id_init(p,id) ((p)->struct_id = (id))
+#define struct_id_denit(p) ((p)->struct_id = 0)
+#define struct_id_verify(p,id) \
+ ({ if ((p)->struct_id != (id)) \
+ panic("%s:%d: "#p" (%08x) struct_id should be "#id" (%08x), is %08x\n", \
+ __FILE__, __LINE__, (p), (id), (p->struct_id)); \
+ })
+
+#else !DEBUG
+
+#define otsan()
+
+#define struct_id_decl
+#define struct_id_init(p,id)
+#define struct_id_denit(p)
+#define struct_id_verify(p,id)
+
+#endif !DEBUG
+
+#endif _mach_debug__debug_