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/* 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 void
get_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph);
#endif /* __ASM_STACKTRACE_H */