unwind_guess.c

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