Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2#ifndef __ASM_ASM_BUG_H
3/*
4 * Copyright (C) 2017 ARM Limited
5 */
6#define __ASM_ASM_BUG_H
7
8#include <asm/brk-imm.h>
9
10#ifdef CONFIG_DEBUG_BUGVERBOSE
11#define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
12#define __BUGVERBOSE_LOCATION(file, line) \
13 .pushsection .rodata.str,"aMS",@progbits,1; \
14 14472: .string file; \
15 .popsection; \
16 \
17 .long 14472b - .; \
18 .short line;
19#else
20#define _BUGVERBOSE_LOCATION(file, line)
21#endif
22
23#ifdef CONFIG_GENERIC_BUG
24#define __BUG_ENTRY_START \
25 .pushsection __bug_table,"aw"; \
26 .align 2; \
27 14470: .long 14471f - .; \
28
29#define __BUG_ENTRY_END \
30 .align 2; \
31 .popsection; \
32 14471:
33
34#define __BUG_ENTRY(flags) \
35 __BUG_ENTRY_START \
36_BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
37 .short flags; \
38 __BUG_ENTRY_END
39#else
40#define __BUG_ENTRY(flags)
41#endif
42
43#define ASM_BUG_FLAGS(flags) \
44 __BUG_ENTRY(flags) \
45 brk BUG_BRK_IMM
46
47#define ASM_BUG() ASM_BUG_FLAGS(0)
48
49#ifdef CONFIG_DEBUG_BUGVERBOSE
50#define __BUG_LOCATION_STRING(file, line) \
51 ".long " file "- .;" \
52 ".short " line ";"
53#else
54#define __BUG_LOCATION_STRING(file, line)
55#endif
56
57#define __BUG_ENTRY_STRING(file, line, flags) \
58 __stringify(__BUG_ENTRY_START) \
59 __BUG_LOCATION_STRING(file, line) \
60 ".short " flags ";" \
61 __stringify(__BUG_ENTRY_END)
62
63#define ARCH_WARN_ASM(file, line, flags, size) \
64 __BUG_ENTRY_STRING(file, line, flags) \
65 __stringify(brk BUG_BRK_IMM)
66
67#define ARCH_WARN_REACHABLE
68
69#endif /* __ASM_ASM_BUG_H */