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      1 /*	$NetBSD: bug.h,v 1.4 2021/12/19 12:12:07 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Taylor R. Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _ASM_BUG_H_
     33 #define _ASM_BUG_H_
     34 
     35 #include <sys/cdefs.h>
     36 #include <sys/systm.h>
     37 
     38 #include <linux/build_bug.h>	/* XXX */
     39 
     40 #define	BUG()			panic("%s:%d: BUG!", __FILE__, __LINE__)
     41 #define	BUG_ON(CONDITION)	KASSERT(!(CONDITION))
     42 
     43 /* XXX Rate limit?  */
     44 #define WARN(CONDITION, FMT, ...)					\
     45 	linux_warning((CONDITION)?					\
     46 	    (printf("warning: %s:%d: " FMT, __FILE__, __LINE__,		\
     47 		##__VA_ARGS__), 1)					\
     48 	    : 0)
     49 
     50 #define	WARN_ONCE(CONDITION, FMT, ...)					\
     51 ({									\
     52 	static volatile unsigned __warn_once_done = 0;			\
     53 	linux_warning((CONDITION)					\
     54 	    ? (atomic_swap_uint(&__warn_once_done, 1) == 0		\
     55 		? (printf("warning: %s:%d: " FMT, __FILE__, __LINE__,	\
     56 			##__VA_ARGS__), 1)				\
     57 		: 1)							\
     58 	    : 0);							\
     59 })
     60 
     61 #define	WARN_ON(CONDITION)	WARN(CONDITION, "%s\n", #CONDITION)
     62 #define	WARN_ON_SMP(CONDITION)	WARN_ON(CONDITION) /* XXX */
     63 #define	WARN_ON_ONCE(CONDITION)	WARN_ONCE(CONDITION, "%s\n", #CONDITION)
     64 
     65 /* XXX Kludge to avoid GCC warning about statements without effect.  */
     66 static inline int
     67 linux_warning(int x)
     68 {
     69 	return x;
     70 }
     71 
     72 #endif  /* _ASM_BUG_H_ */
     73