1#ifndef _PARISC_BUG_H
2#define _PARISC_BUG_H
3
4#include <linux/kernel.h>	/* for BUGFLAG_TAINT */
5
6/*
7 * Tell the user there is some problem.
8 * The offending file and line are encoded in the __bug_table section.
9 */
10
11#ifdef CONFIG_BUG
12#define HAVE_ARCH_BUG
13#define HAVE_ARCH_WARN_ON
14
15/* the break instruction is used as BUG() marker.  */
16#define	PARISC_BUG_BREAK_ASM	"break 0x1f, 0x1fff"
17#define	PARISC_BUG_BREAK_INSN	0x03ffe01f  /* PARISC_BUG_BREAK_ASM */
18
19#if defined(CONFIG_64BIT)
20#define ASM_WORD_INSN		".dword\t"
21#else
22#define ASM_WORD_INSN		".word\t"
23#endif
24
25#ifdef CONFIG_DEBUG_BUGVERBOSE
26#define BUG()								\
27	do {								\
28		asm volatile("\n"					\
29			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
30			     "\t.pushsection __bug_table,\"a\"\n"	\
31			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
32			     "\t.short %c1, %c2\n"			\
33			     "\t.org 2b+%c3\n"				\
34			     "\t.popsection"				\
35			     : : "i" (__FILE__), "i" (__LINE__),	\
36			     "i" (0), "i" (sizeof(struct bug_entry)) ); \
37		unreachable();						\
38	} while(0)
39
40#else
41#define BUG()								\
42	do {								\
43		asm volatile(PARISC_BUG_BREAK_ASM : : );		\
44		unreachable();						\
45	} while(0)
46#endif
47
48#ifdef CONFIG_DEBUG_BUGVERBOSE
49#define __WARN_TAINT(taint)						\
50	do {								\
51		asm volatile("\n"					\
52			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
53			     "\t.pushsection __bug_table,\"a\"\n"	\
54			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
55			     "\t.short %c1, %c2\n"			\
56			     "\t.org 2b+%c3\n"				\
57			     "\t.popsection"				\
58			     : : "i" (__FILE__), "i" (__LINE__),	\
59			     "i" (BUGFLAG_TAINT(taint)), 		\
60			     "i" (sizeof(struct bug_entry)) );		\
61	} while(0)
62#else
63#define __WARN_TAINT(taint)						\
64	do {								\
65		asm volatile("\n"					\
66			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
67			     "\t.pushsection __bug_table,\"a\"\n"	\
68			     "2:\t" ASM_WORD_INSN "1b\n"		\
69			     "\t.short %c0\n"				\
70			     "\t.org 2b+%c1\n"				\
71			     "\t.popsection"				\
72			     : : "i" (BUGFLAG_TAINT(taint)),		\
73			     "i" (sizeof(struct bug_entry)) );		\
74	} while(0)
75#endif
76
77
78#define WARN_ON(x) ({						\
79	int __ret_warn_on = !!(x);				\
80	if (__builtin_constant_p(__ret_warn_on)) {		\
81		if (__ret_warn_on)				\
82			__WARN();				\
83	} else {						\
84		if (unlikely(__ret_warn_on))			\
85			__WARN();				\
86	}							\
87	unlikely(__ret_warn_on);				\
88})
89
90#endif
91
92#include <asm-generic/bug.h>
93#endif
94
95