18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_UML_STACKTRACE_H 38c2ecf20Sopenharmony_ci#define _ASM_UML_STACKTRACE_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/uaccess.h> 68c2ecf20Sopenharmony_ci#include <linux/ptrace.h> 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_cistruct stack_frame { 98c2ecf20Sopenharmony_ci struct stack_frame *next_frame; 108c2ecf20Sopenharmony_ci unsigned long return_address; 118c2ecf20Sopenharmony_ci}; 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_cistruct stacktrace_ops { 148c2ecf20Sopenharmony_ci void (*address)(void *data, unsigned long address, int reliable); 158c2ecf20Sopenharmony_ci}; 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ci#ifdef CONFIG_FRAME_POINTER 188c2ecf20Sopenharmony_cistatic inline unsigned long 198c2ecf20Sopenharmony_ciget_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs) 208c2ecf20Sopenharmony_ci{ 218c2ecf20Sopenharmony_ci if (!task || task == current) 228c2ecf20Sopenharmony_ci return segv_regs ? PT_REGS_BP(segv_regs) : current_bp(); 238c2ecf20Sopenharmony_ci return KSTK_EBP(task); 248c2ecf20Sopenharmony_ci} 258c2ecf20Sopenharmony_ci#else 268c2ecf20Sopenharmony_cistatic inline unsigned long 278c2ecf20Sopenharmony_ciget_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs) 288c2ecf20Sopenharmony_ci{ 298c2ecf20Sopenharmony_ci return 0; 308c2ecf20Sopenharmony_ci} 318c2ecf20Sopenharmony_ci#endif 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_cistatic inline unsigned long 348c2ecf20Sopenharmony_ci*get_stack_pointer(struct task_struct *task, struct pt_regs *segv_regs) 358c2ecf20Sopenharmony_ci{ 368c2ecf20Sopenharmony_ci if (!task || task == current) 378c2ecf20Sopenharmony_ci return segv_regs ? (unsigned long *)PT_REGS_SP(segv_regs) : current_sp(); 388c2ecf20Sopenharmony_ci return (unsigned long *)KSTK_ESP(task); 398c2ecf20Sopenharmony_ci} 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_civoid dump_trace(struct task_struct *tsk, const struct stacktrace_ops *ops, void *data); 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci#endif /* _ASM_UML_STACKTRACE_H */ 44