1#ifndef __ASM_STACKTRACE_H
2#define __ASM_STACKTRACE_H
3
4#include <asm/ptrace.h>
5
6struct stackframe {
7	/*
8	 * FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled
9	 * and R11 otherwise.
10	 */
11	unsigned long fp;
12	unsigned long sp;
13	unsigned long lr;
14	unsigned long pc;
15};
16
17static __always_inline
18void arm_get_current_stackframe(struct pt_regs *regs, struct stackframe *frame)
19{
20		frame->fp = frame_pointer(regs);
21		frame->sp = regs->ARM_sp;
22		frame->lr = regs->ARM_lr;
23		frame->pc = regs->ARM_pc;
24}
25
26extern int unwind_frame(struct stackframe *frame);
27extern void walk_stackframe(struct stackframe *frame,
28			    int (*fn)(struct stackframe *, void *), void *data);
29
30#endif	/* __ASM_STACKTRACE_H */
31