| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* Copyright (C) 2008-2018 Andes Technology Corporation */ |
| 3 | |
| 4 | #ifndef __ASM_STACKTRACE_H |
| 5 | #define __ASM_STACKTRACE_H |
| 6 | |
| 7 | /* Kernel callchain */ |
| 8 | struct stackframe { |
| 9 | unsigned long fp; |
| 10 | unsigned long sp; |
| 11 | unsigned long lp; |
| 12 | }; |
| 13 | |
| 14 | /* |
| 15 | * struct frame_tail: User callchain |
| 16 | * IMPORTANT: |
| 17 | * This struct is used for call-stack walking, |
| 18 | * the order and types matters. |
| 19 | * Do not use array, it only stores sizeof(pointer) |
| 20 | * |
| 21 | * The details can refer to arch/arm/kernel/perf_event.c |
| 22 | */ |
| 23 | struct frame_tail { |
| 24 | unsigned long stack_fp; |
| 25 | unsigned long stack_lp; |
| 26 | }; |
| 27 | |
| 28 | /* For User callchain with optimize for size */ |
| 29 | struct frame_tail_opt_size { |
| 30 | unsigned long stack_r6; |
| 31 | unsigned long stack_fp; |
| 32 | unsigned long stack_gp; |
| 33 | unsigned long stack_lp; |
| 34 | }; |
| 35 | |
| 36 | extern void |
| 37 | get_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph); |
| 38 | |
| 39 | #endif /* __ASM_STACKTRACE_H */ |