| /* |
| * 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 */ |
