Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_STACKTRACE_H
3#define __ASM_STACKTRACE_H
4
5#include <asm/ptrace.h>
6#include <linux/llist.h>
7
8struct stackframe {
9 /*
10 * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled
11 * and R11 otherwise.
12 */
13 unsigned long fp;
14 unsigned long sp;
15 unsigned long lr;
16 unsigned long pc;
17#ifdef CONFIG_KRETPROBES
18 struct llist_node *kr_cur;
19 struct task_struct *tsk;
20#endif
21};
22
23static __always_inline
24void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame)
25{
26 frame->fp = frame_pointer(regs);
27 frame->sp = regs->ARM_sp;
28 frame->lr = regs->ARM_lr;
29 frame->pc = regs->ARM_pc;
30#ifdef CONFIG_KRETPROBES
31 frame->kr_cur = NULL;
32 frame->tsk = current;
33#endif
34}
35
36extern int unwind_frame(struct stackframe *frame);
37extern void walk_stackframe(struct stackframe *frame,
38 int (*fn)(struct stackframe *, void *), void *data);
39
40#endif /* __ASM_STACKTRACE_H */