1
2
3
4
5
6
7
8
9
10#ifndef _XTENSA_STACKTRACE_H
11#define _XTENSA_STACKTRACE_H
12
13#include <linux/sched.h>
14
15struct stackframe {
16 unsigned long pc;
17 unsigned long sp;
18};
19
20static __always_inline unsigned long *stack_pointer(struct task_struct *task)
21{
22 unsigned long *sp;
23
24 if (!task || task == current)
25 __asm__ __volatile__ ("mov %0, a1\n" : "=a"(sp));
26 else
27 sp = (unsigned long *)task->thread.sp;
28
29 return sp;
30}
31
32void walk_stackframe(unsigned long *sp,
33 int (*fn)(struct stackframe *frame, void *data),
34 void *data);
35
36#endif
37