| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_STACKTRACE_H |
| 3 | #define __ASM_STACKTRACE_H |
| 4 | |
| 5 | #include <asm/ptrace.h> |
| 6 | |
| 7 | struct stackframe { |
| 8 | /* |
| 9 | * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled |
| 10 | * and R11 otherwise. |
| 11 | */ |
| 12 | unsigned long fp; |
| 13 | unsigned long sp; |
| 14 | unsigned long lr; |
| 15 | unsigned long pc; |
| 16 | |
| 17 | /* address of the LR value on the stack */ |
| 18 | unsigned long *lr_addr; |
| 19 | }; |
| 20 | |
| 21 | static __always_inline |
| 22 | void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame) |
| 23 | { |
| 24 | frame->fp = frame_pointer(regs); |
| 25 | frame->sp = regs->ARM_sp; |
| 26 | frame->lr = regs->ARM_lr; |
| 27 | frame->pc = regs->ARM_pc; |
| 28 | } |
| 29 | |
| 30 | extern int unwind_frame(struct stackframe *frame); |
| 31 | extern void walk_stackframe(struct stackframe *frame, |
| 32 | int (*fn)(struct stackframe *, void *), void *data); |
| 33 | |
| 34 | #endif /* __ASM_STACKTRACE_H */ |