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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 */