Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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
18 /* address of the LR value on the stack */
19 unsigned long *lr_addr;
20#ifdef CONFIG_KRETPROBES
21 struct llist_node *kr_cur;
22 struct task_struct *tsk;
23#endif
24};
25
26static __always_inline
27void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame)
28{
29 frame->fp = frame_pointer(regs);
30 frame->sp = regs->ARM_sp;
31 frame->lr = regs->ARM_lr;
32 frame->pc = regs->ARM_pc;
33#ifdef CONFIG_KRETPROBES
34 frame->kr_cur = NULL;
35 frame->tsk = current;
36#endif
37}
38
39extern int unwind_frame(struct stackframe *frame);
40extern void walk_stackframe(struct stackframe *frame,
41 int (*fn)(struct stackframe *, void *), void *data);
42extern void dump_mem(const char *lvl, const char *str, unsigned long bottom,
43 unsigned long top);
44
45#endif /* __ASM_STACKTRACE_H */