Loading...
1#ifndef __ASM_SH_BUG_H
2#define __ASM_SH_BUG_H
3
4#include <linux/linkage.h>
5
6#define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */
7#define BUGFLAG_UNWINDER (1 << 1)
8
9#ifdef CONFIG_GENERIC_BUG
10#define HAVE_ARCH_BUG
11#define HAVE_ARCH_WARN_ON
12
13/**
14 * _EMIT_BUG_ENTRY
15 * %1 - __FILE__
16 * %2 - __LINE__
17 * %3 - trap type
18 * %4 - sizeof(struct bug_entry)
19 *
20 * The trapa opcode itself sits in %0.
21 * The %O notation is used to avoid # generation.
22 *
23 * The offending file and line are encoded in the __bug_table section.
24 */
25#ifdef CONFIG_DEBUG_BUGVERBOSE
26#define _EMIT_BUG_ENTRY \
27 "\t.pushsection __bug_table,\"a\"\n" \
28 "2:\t.long 1b, %O1\n" \
29 "\t.short %O2, %O3\n" \
30 "\t.org 2b+%O4\n" \
31 "\t.popsection\n"
32#else
33#define _EMIT_BUG_ENTRY \
34 "\t.pushsection __bug_table,\"a\"\n" \
35 "2:\t.long 1b\n" \
36 "\t.short %O3\n" \
37 "\t.org 2b+%O4\n" \
38 "\t.popsection\n"
39#endif
40
41#define BUG() \
42do { \
43 __asm__ __volatile__ ( \
44 "1:\t.short %O0\n" \
45 _EMIT_BUG_ENTRY \
46 : \
47 : "n" (TRAPA_BUG_OPCODE), \
48 "i" (__FILE__), \
49 "i" (__LINE__), "i" (0), \
50 "i" (sizeof(struct bug_entry))); \
51} while (0)
52
53#define __WARN_TAINT(taint) \
54do { \
55 __asm__ __volatile__ ( \
56 "1:\t.short %O0\n" \
57 _EMIT_BUG_ENTRY \
58 : \
59 : "n" (TRAPA_BUG_OPCODE), \
60 "i" (__FILE__), \
61 "i" (__LINE__), \
62 "i" (BUGFLAG_TAINT(taint)), \
63 "i" (sizeof(struct bug_entry))); \
64} while (0)
65
66#define WARN_ON(x) ({ \
67 int __ret_warn_on = !!(x); \
68 if (__builtin_constant_p(__ret_warn_on)) { \
69 if (__ret_warn_on) \
70 __WARN(); \
71 } else { \
72 if (unlikely(__ret_warn_on)) \
73 __WARN(); \
74 } \
75 unlikely(__ret_warn_on); \
76})
77
78#define UNWINDER_BUG() \
79do { \
80 __asm__ __volatile__ ( \
81 "1:\t.short %O0\n" \
82 _EMIT_BUG_ENTRY \
83 : \
84 : "n" (TRAPA_BUG_OPCODE), \
85 "i" (__FILE__), \
86 "i" (__LINE__), \
87 "i" (BUGFLAG_UNWINDER), \
88 "i" (sizeof(struct bug_entry))); \
89} while (0)
90
91#define UNWINDER_BUG_ON(x) ({ \
92 int __ret_unwinder_on = !!(x); \
93 if (__builtin_constant_p(__ret_unwinder_on)) { \
94 if (__ret_unwinder_on) \
95 UNWINDER_BUG(); \
96 } else { \
97 if (unlikely(__ret_unwinder_on)) \
98 UNWINDER_BUG(); \
99 } \
100 unlikely(__ret_unwinder_on); \
101})
102
103#else
104
105#define UNWINDER_BUG BUG
106#define UNWINDER_BUG_ON BUG_ON
107
108#endif /* CONFIG_GENERIC_BUG */
109
110#include <asm-generic/bug.h>
111
112struct pt_regs;
113extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
114
115#endif /* __ASM_SH_BUG_H */
1#ifndef __ASM_SH_BUG_H
2#define __ASM_SH_BUG_H
3
4#define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */
5#define BUGFLAG_UNWINDER (1 << 1)
6
7#ifdef CONFIG_GENERIC_BUG
8#define HAVE_ARCH_BUG
9#define HAVE_ARCH_WARN_ON
10
11/**
12 * _EMIT_BUG_ENTRY
13 * %1 - __FILE__
14 * %2 - __LINE__
15 * %3 - trap type
16 * %4 - sizeof(struct bug_entry)
17 *
18 * The trapa opcode itself sits in %0.
19 * The %O notation is used to avoid # generation.
20 *
21 * The offending file and line are encoded in the __bug_table section.
22 */
23#ifdef CONFIG_DEBUG_BUGVERBOSE
24#define _EMIT_BUG_ENTRY \
25 "\t.pushsection __bug_table,\"a\"\n" \
26 "2:\t.long 1b, %O1\n" \
27 "\t.short %O2, %O3\n" \
28 "\t.org 2b+%O4\n" \
29 "\t.popsection\n"
30#else
31#define _EMIT_BUG_ENTRY \
32 "\t.pushsection __bug_table,\"a\"\n" \
33 "2:\t.long 1b\n" \
34 "\t.short %O3\n" \
35 "\t.org 2b+%O4\n" \
36 "\t.popsection\n"
37#endif
38
39#define BUG() \
40do { \
41 __asm__ __volatile__ ( \
42 "1:\t.short %O0\n" \
43 _EMIT_BUG_ENTRY \
44 : \
45 : "n" (TRAPA_BUG_OPCODE), \
46 "i" (__FILE__), \
47 "i" (__LINE__), "i" (0), \
48 "i" (sizeof(struct bug_entry))); \
49} while (0)
50
51#define __WARN_TAINT(taint) \
52do { \
53 __asm__ __volatile__ ( \
54 "1:\t.short %O0\n" \
55 _EMIT_BUG_ENTRY \
56 : \
57 : "n" (TRAPA_BUG_OPCODE), \
58 "i" (__FILE__), \
59 "i" (__LINE__), \
60 "i" (BUGFLAG_TAINT(taint)), \
61 "i" (sizeof(struct bug_entry))); \
62} while (0)
63
64#define WARN_ON(x) ({ \
65 int __ret_warn_on = !!(x); \
66 if (__builtin_constant_p(__ret_warn_on)) { \
67 if (__ret_warn_on) \
68 __WARN(); \
69 } else { \
70 if (unlikely(__ret_warn_on)) \
71 __WARN(); \
72 } \
73 unlikely(__ret_warn_on); \
74})
75
76#define UNWINDER_BUG() \
77do { \
78 __asm__ __volatile__ ( \
79 "1:\t.short %O0\n" \
80 _EMIT_BUG_ENTRY \
81 : \
82 : "n" (TRAPA_BUG_OPCODE), \
83 "i" (__FILE__), \
84 "i" (__LINE__), \
85 "i" (BUGFLAG_UNWINDER), \
86 "i" (sizeof(struct bug_entry))); \
87} while (0)
88
89#define UNWINDER_BUG_ON(x) ({ \
90 int __ret_unwinder_on = !!(x); \
91 if (__builtin_constant_p(__ret_unwinder_on)) { \
92 if (__ret_unwinder_on) \
93 UNWINDER_BUG(); \
94 } else { \
95 if (unlikely(__ret_unwinder_on)) \
96 UNWINDER_BUG(); \
97 } \
98 unlikely(__ret_unwinder_on); \
99})
100
101#else
102
103#define UNWINDER_BUG BUG
104#define UNWINDER_BUG_ON BUG_ON
105
106#endif /* CONFIG_GENERIC_BUG */
107
108#include <asm-generic/bug.h>
109
110#endif /* __ASM_SH_BUG_H */