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/*
* arch/xtensa/include/asm/stacktrace.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2013 Tensilica Inc.
*/
#ifndef _XTENSA_STACKTRACE_H
#define _XTENSA_STACKTRACE_H
#include <linux/sched.h>
struct stackframe {
unsigned long pc;
unsigned long sp;
};
static __always_inline unsigned long *stack_pointer(struct task_struct *task)
{
unsigned long *sp;
if (!task || task == current)
__asm__ __volatile__ ("mov %0, a1\n" : "=a"(sp));
else
sp = (unsigned long *)task->thread.sp;
return sp;
}
void walk_stackframe(unsigned long *sp,
int (*fn)(struct stackframe *frame, void *data),
void *data);
void xtensa_backtrace_kernel(struct pt_regs *regs, unsigned int depth,
int (*kfn)(struct stackframe *frame, void *data),
int (*ufn)(struct stackframe *frame, void *data),
void *data);
void xtensa_backtrace_user(struct pt_regs *regs, unsigned int depth,
int (*ufn)(struct stackframe *frame, void *data),
void *data);
#endif /* _XTENSA_STACKTRACE_H */