37 lines
805 B
C
37 lines
805 B
C
/*
|
|
* 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);
|
|
|
|
#endif /* _XTENSA_STACKTRACE_H */
|