| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2022 Loongson Technology Corporation Limited |
| 4 | */ |
| 5 | #include <asm/unwind.h> |
| 6 | |
| 7 | unsigned long unwind_get_return_address(struct unwind_state *state) |
| 8 | { |
| 9 | return __unwind_get_return_address(state); |
| 10 | } |
| 11 | EXPORT_SYMBOL_GPL(unwind_get_return_address); |
| 12 | |
| 13 | void unwind_start(struct unwind_state *state, struct task_struct *task, |
| 14 | struct pt_regs *regs) |
| 15 | { |
| 16 | __unwind_start(state, task, regs); |
| 17 | if (!unwind_done(state) && !__kernel_text_address(addr: state->pc)) |
| 18 | unwind_next_frame(state); |
| 19 | } |
| 20 | EXPORT_SYMBOL_GPL(unwind_start); |
| 21 | |
| 22 | bool unwind_next_frame(struct unwind_state *state) |
| 23 | { |
| 24 | return default_next_frame(state); |
| 25 | } |
| 26 | EXPORT_SYMBOL_GPL(unwind_next_frame); |
| 27 |