| Catalin Marinas | bff595c | 2009-02-16 11:41:36 +0100 | [diff] [blame] | 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 { |
| 33 | unsigned long addr; |
| 34 | unsigned long insn; |
| 35 | }; |
| 36 | |
| 37 | struct unwind_table { |
| 38 | struct list_head list; |
| 39 | struct unwind_idx *start; |
| 40 | struct unwind_idx *stop; |
| 41 | unsigned long begin_addr; |
| 42 | unsigned long end_addr; |
| 43 | }; |
| 44 | |
| 45 | extern struct unwind_table *unwind_table_add(unsigned long start, |
| 46 | unsigned long size, |
| 47 | unsigned long text_addr, |
| 48 | unsigned long text_size); |
| 49 | extern void unwind_table_del(struct unwind_table *tab); |
| 50 | extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk); |
| 51 | |
| 52 | #ifdef CONFIG_ARM_UNWIND |
| 53 | extern int __init unwind_init(void); |
| 54 | #else |
| 55 | static inline int __init unwind_init(void) |
| 56 | { |
| 57 | return 0; |
| 58 | } |
| 59 | #endif |
| 60 | |
| 61 | #endif /* !__ASSEMBLY__ */ |
| 62 | |
| 63 | #ifdef CONFIG_ARM_UNWIND |
| 64 | #define UNWIND(code...) code |
| 65 | #else |
| 66 | #define UNWIND(code...) |
| 67 | #endif |
| 68 | |
| 69 | #endif /* __ASM_UNWIND_H */ |