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bff595c1 CM |
1 | /* |
2 | * arch/arm/include/asm/unwind.h | |
3 | * | |
4 | * Copyright (C) 2008 ARM Limited | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
20 | #ifndef __ASM_UNWIND_H | |
21 | #define __ASM_UNWIND_H | |
22 | ||
23 | #ifndef __ASSEMBLY__ | |
24 | ||
25 | /* Unwind reason code according the the ARM EABI documents */ | |
26 | enum unwind_reason_code { | |
27 | URC_OK = 0, /* operation completed successfully */ | |
28 | URC_CONTINUE_UNWIND = 8, | |
29 | URC_FAILURE = 9 /* unspecified failure of some kind */ | |
30 | }; | |
31 | ||
32 | struct unwind_idx { | |
de66a979 | 33 | unsigned long addr_offset; |
bff595c1 CM |
34 | unsigned long insn; |
35 | }; | |
36 | ||
37 | struct unwind_table { | |
38 | struct list_head list; | |
de66a979 UKK |
39 | const struct unwind_idx *start; |
40 | const struct unwind_idx *origin; | |
41 | const struct unwind_idx *stop; | |
bff595c1 CM |
42 | unsigned long begin_addr; |
43 | unsigned long end_addr; | |
44 | }; | |
45 | ||
46 | extern struct unwind_table *unwind_table_add(unsigned long start, | |
47 | unsigned long size, | |
48 | unsigned long text_addr, | |
49 | unsigned long text_size); | |
50 | extern void unwind_table_del(struct unwind_table *tab); | |
51 | extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk); | |
52 | ||
bff595c1 CM |
53 | #endif /* !__ASSEMBLY__ */ |
54 | ||
55 | #ifdef CONFIG_ARM_UNWIND | |
56 | #define UNWIND(code...) code | |
57 | #else | |
58 | #define UNWIND(code...) | |
59 | #endif | |
60 | ||
61 | #endif /* __ASM_UNWIND_H */ |