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