| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * arch/arm/include/asm/unwind.h |
| 4 | * |
| 5 | * Copyright (C) 2008 ARM Limited |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #ifndef __ASM_UNWIND_H |
| 9 | #define __ASM_UNWIND_H |
| 10 | |
| 11 | #ifndef __ASSEMBLY__ |
| 12 | |
| 13 | /* Unwind reason code according the the ARM EABI documents */ |
| 14 | enum unwind_reason_code { |
| 15 | URC_OK = 0, /* operation completed successfully */ |
| 16 | URC_CONTINUE_UNWIND = 8, |
| 17 | URC_FAILURE = 9 /* unspecified failure of some kind */ |
| 18 | }; |
| 19 | |
| 20 | struct unwind_idx { |
| 21 | unsigned long addr_offset; |
| 22 | unsigned long insn; |
| 23 | }; |
| 24 | |
| 25 | struct unwind_table { |
| 26 | struct list_head list; |
| 27 | const struct unwind_idx *start; |
| 28 | const struct unwind_idx *origin; |
| 29 | const struct unwind_idx *stop; |
| 30 | unsigned long begin_addr; |
| 31 | unsigned long end_addr; |
| 32 | }; |
| 33 | |
| 34 | extern struct unwind_table *unwind_table_add(unsigned long start, |
| 35 | unsigned long size, |
| 36 | unsigned long text_addr, |
| 37 | unsigned long text_size); |
| 38 | extern void unwind_table_del(struct unwind_table *tab); |
| 39 | extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk); |
| 40 | |
| 41 | #endif /* !__ASSEMBLY__ */ |
| 42 | |
| 43 | #ifdef CONFIG_ARM_UNWIND |
| 44 | #define UNWIND(code...) code |
| 45 | #else |
| 46 | #define UNWIND(code...) |
| 47 | #endif |
| 48 | |
| 49 | #endif /* __ASM_UNWIND_H */ |