[linux-2.6-block.git] / include / asm-sh / bug.h

#ifndef __ASM_SH_BUG_H
#define __ASM_SH_BUG_H

#define TRAPA_BUG_OPCODE	0xc33e	/* trapa #0x3e */

#ifdef CONFIG_BUG
#define HAVE_ARCH_BUG
#define HAVE_ARCH_WARN_ON

/**
 * _EMIT_BUG_ENTRY
 * %1 - __FILE__
 * %2 - __LINE__
 * %3 - trap type
 * %4 - sizeof(struct bug_entry)
 *
 * The trapa opcode itself sits in %0.
 * The %O notation is used to avoid # generation.
 *
 * The offending file and line are encoded in the __bug_table section.
 */
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define _EMIT_BUG_ENTRY				\
	"\t.pushsection __bug_table,\"a\"\n"	\
	"2:\t.long 1b, %O1\n"			\
	"\t.short %O2, %O3\n"			\
	"\t.org 2b+%O4\n"			\
	"\t.popsection\n"
#else
#define _EMIT_BUG_ENTRY				\
	"\t.pushsection __bug_table,\"a\"\n"	\
	"2:\t.long 1b\n"			\
	"\t.short %O3\n"			\
	"\t.org 2b+%O4\n"			\
	"\t.popsection\n"
#endif

#define BUG()						\
do {							\
	__asm__ __volatile__ (				\
		"1:\t.short %O0\n"			\
		_EMIT_BUG_ENTRY				\
		 :					\
		 : "n" (TRAPA_BUG_OPCODE),		\
		   "i" (__FILE__),			\
		   "i" (__LINE__), "i" (0),		\
		   "i" (sizeof(struct bug_entry)));	\
} while (0)

#define __WARN()					\
do {							\
	__asm__ __volatile__ (				\
		"1:\t.short %O0\n"			\
		 _EMIT_BUG_ENTRY			\
		 :					\
		 : "n" (TRAPA_BUG_OPCODE),		\
		   "i" (__FILE__),			\
		   "i" (__LINE__),			\
		   "i" (BUGFLAG_WARNING),		\
		   "i" (sizeof(struct bug_entry)));	\
} while (0)

#define WARN_ON(x) ({						\
	int __ret_warn_on = !!(x);				\
	if (__builtin_constant_p(__ret_warn_on)) {		\
		if (__ret_warn_on)				\
			__WARN();				\
	} else {						\
		if (unlikely(__ret_warn_on))			\
			__WARN();				\
	}							\
	unlikely(__ret_warn_on);				\
})

struct pt_regs;

/* arch/sh/kernel/traps.c */
void handle_BUG(struct pt_regs *);

#endif /* CONFIG_BUG */

#include <asm-generic/bug.h>

#endif /* __ASM_SH_BUG_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __ASM_SH_BUG_H
	2	#define __ASM_SH_BUG_H
	3
44530c69 PM	4	#define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */
44530c69 PM	5
c8538a7a	6	#ifdef CONFIG_BUG
fa691511 PM	7	#define HAVE_ARCH_BUG
fa691511 PM	8	#define HAVE_ARCH_WARN_ON
dc34d312	9
fa691511 PM	10	/**
	11	* _EMIT_BUG_ENTRY
	12	* %1 - __FILE__
	13	* %2 - __LINE__
	14	* %3 - trap type
	15	* %4 - sizeof(struct bug_entry)
	16	*
	17	* The trapa opcode itself sits in %0.
	18	* The %O notation is used to avoid # generation.
	19	*
	20	* The offending file and line are encoded in the __bug_table section.
	21	*/
dc34d312	22	#ifdef CONFIG_DEBUG_BUGVERBOSE
fa691511 PM	23	#define _EMIT_BUG_ENTRY \
	24	"\t.pushsection __bug_table,\"a\"\n" \
	25	"2:\t.long 1b, %O1\n" \
	26	"\t.short %O2, %O3\n" \
	27	"\t.org 2b+%O4\n" \
	28	"\t.popsection\n"
	29	#else
	30	#define _EMIT_BUG_ENTRY \
	31	"\t.pushsection __bug_table,\"a\"\n" \
	32	"2:\t.long 1b\n" \
	33	"\t.short %O3\n" \
	34	"\t.org 2b+%O4\n" \
	35	"\t.popsection\n"
	36	#endif
dc34d312 PM	37
	38	#define BUG() \
	39	do { \
	40	__asm__ __volatile__ ( \
fa691511 PM	41	"1:\t.short %O0\n" \
	42	_EMIT_BUG_ENTRY \
	43	: \
	44	: "n" (TRAPA_BUG_OPCODE), \
	45	"i" (__FILE__), \
	46	"i" (__LINE__), "i" (0), \
	47	"i" (sizeof(struct bug_entry))); \
dc34d312 PM	48	} while (0)
dc34d312 PM	49
fa691511 PM	50	#define __WARN() \
	51	do { \
	52	__asm__ __volatile__ ( \
	53	"1:\t.short %O0\n" \
	54	_EMIT_BUG_ENTRY \
	55	: \
	56	: "n" (TRAPA_BUG_OPCODE), \
	57	"i" (__FILE__), \
	58	"i" (__LINE__), \
	59	"i" (BUGFLAG_WARNING), \
	60	"i" (sizeof(struct bug_entry))); \
1da177e4 LT	61	} while (0)
1da177e4 LT	62
fa691511	63	#define WARN_ON(x) ({ \
fd0cbdd3	64	int __ret_warn_on = !!(x); \
fa691511 PM	65	if (__builtin_constant_p(__ret_warn_on)) { \
	66	if (__ret_warn_on) \
	67	__WARN(); \
	68	} else { \
	69	if (unlikely(__ret_warn_on)) \
	70	__WARN(); \
	71	} \
	72	unlikely(__ret_warn_on); \
	73	})
dc34d312	74
fa691511 PM	75	struct pt_regs;
	76
	77	/* arch/sh/kernel/traps.c */
	78	void handle_BUG(struct pt_regs *);
dc34d312 PM	79
dc34d312 PM	80	#endif /* CONFIG_BUG */
c8538a7a	81
1da177e4 LT	82	#include <asm-generic/bug.h>
1da177e4 LT	83
dc34d312	84	#endif /* __ASM_SH_BUG_H */