1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_BUG_H
3 #define __ASM_BUG_H
4
5 #include <asm/break.h>
6 #include <linux/stringify.h>
7
8 #ifndef CONFIG_DEBUG_BUGVERBOSE
9 #define _BUGVERBOSE_LOCATION(file, line)
10 #else
11 #define __BUGVERBOSE_LOCATION(file, line) \
12 .pushsection .rodata.str, "aMS", @progbits, 1; \
13 10002: .string file; \
14 .popsection; \
15 \
16 .long 10002b - .; \
17 .short line;
18 #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
19 #endif
20
21 #ifndef CONFIG_GENERIC_BUG
22 #define __BUG_ENTRY(flags)
23 #else
24 #define __BUG_ENTRY(flags) \
25 .pushsection __bug_table, "aw"; \
26 .align 2; \
27 10000: .long 10001f - .; \
28 _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
29 .short flags; \
30 .popsection; \
31 10001:
32 #endif
33
34 #define ASM_BUG_FLAGS(flags) \
35 __BUG_ENTRY(flags) \
36 break BRK_BUG
37
38 #define ASM_BUG() ASM_BUG_FLAGS(0)
39
40 #define __BUG_FLAGS(flags) \
41 asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags)));
42
43 #define __WARN_FLAGS(flags) \
44 do { \
45 instrumentation_begin(); \
46 __BUG_FLAGS(BUGFLAG_WARNING|(flags)); \
47 annotate_reachable(); \
48 instrumentation_end(); \
49 } while (0)
50
51 #define BUG() \
52 do { \
53 instrumentation_begin(); \
54 __BUG_FLAGS(0); \
55 unreachable(); \
56 } while (0)
57
58 #define HAVE_ARCH_BUG
59
60 #include <asm-generic/bug.h>
61
62 #endif /* __ASM_BUG_H */
63
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