/* SPDX-License-Identifier: GPL-2.0 *//* Copyright (C) 2008-2018 Andes Technology Corporation */ #ifndef __ASM_STACKTRACE_H#define __ASM_STACKTRACE_H /* Kernel callchain */struct stackframe {	unsigned long fp;	unsigned long sp;	unsigned long lp;}; /* * struct frame_tail: User callchain * IMPORTANT: * This struct is used for call-stack walking, * the order and types matters. * Do not use array, it only stores sizeof(pointer) * * The details can refer to arch/arm/kernel/perf_event.c */struct frame_tail {	unsigned long stack_fp;	unsigned long stack_lp;}; /* For User callchain with optimize for size */struct frame_tail_opt_size {	unsigned long stack_r6;	unsigned long stack_fp;	unsigned long stack_gp;	unsigned long stack_lp;}; extern voidget_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph); #endif /* __ASM_STACKTRACE_H */