Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * arch/xtensa/include/asm/stacktrace.h
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001 - 2013 Tensilica Inc.
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 sp = current_stack_pointer;
26 else
27 sp = task->thread.sp;
28
29 return (unsigned long *)sp;
30}
31
32void walk_stackframe(unsigned long *sp,
33 int (*fn)(struct stackframe *frame, void *data),
34 void *data);
35
36void xtensa_backtrace_kernel(struct pt_regs *regs, unsigned int depth,
37 int (*kfn)(struct stackframe *frame, void *data),
38 int (*ufn)(struct stackframe *frame, void *data),
39 void *data);
40void xtensa_backtrace_user(struct pt_regs *regs, unsigned int depth,
41 int (*ufn)(struct stackframe *frame, void *data),
42 void *data);
43
44#endif /* _XTENSA_STACKTRACE_H */