1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* Copyright (C) 2008-2018 Andes Technology Corporation */ 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #ifndef __ASM_STACKTRACE_H 5*4882a593Smuzhiyun #define __ASM_STACKTRACE_H 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* Kernel callchain */ 8*4882a593Smuzhiyun struct stackframe { 9*4882a593Smuzhiyun unsigned long fp; 10*4882a593Smuzhiyun unsigned long sp; 11*4882a593Smuzhiyun unsigned long lp; 12*4882a593Smuzhiyun }; 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /* 15*4882a593Smuzhiyun * struct frame_tail: User callchain 16*4882a593Smuzhiyun * IMPORTANT: 17*4882a593Smuzhiyun * This struct is used for call-stack walking, 18*4882a593Smuzhiyun * the order and types matters. 19*4882a593Smuzhiyun * Do not use array, it only stores sizeof(pointer) 20*4882a593Smuzhiyun * 21*4882a593Smuzhiyun * The details can refer to arch/arm/kernel/perf_event.c 22*4882a593Smuzhiyun */ 23*4882a593Smuzhiyun struct frame_tail { 24*4882a593Smuzhiyun unsigned long stack_fp; 25*4882a593Smuzhiyun unsigned long stack_lp; 26*4882a593Smuzhiyun }; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* For User callchain with optimize for size */ 29*4882a593Smuzhiyun struct frame_tail_opt_size { 30*4882a593Smuzhiyun unsigned long stack_r6; 31*4882a593Smuzhiyun unsigned long stack_fp; 32*4882a593Smuzhiyun unsigned long stack_gp; 33*4882a593Smuzhiyun unsigned long stack_lp; 34*4882a593Smuzhiyun }; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun extern void 37*4882a593Smuzhiyun get_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph); 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #endif /* __ASM_STACKTRACE_H */ 40