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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 */ |
| 70 |
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