41 int notrace unwind_frame(struct stackframe *frame)  in unwind_frame()  argument
44 	unsigned long fp = frame->fp;  in unwind_frame()
47 	low = frame->sp;  in unwind_frame()
55 	frame->sp = frame->fp;  in unwind_frame()
56 	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp));  in unwind_frame()
57 	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp + 4));  in unwind_frame()
64 	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp - 12));  in unwind_frame()
65 	frame->sp = READ_ONCE_NOCHECK(*(unsigned long *)(fp - 8));  in unwind_frame()
66 	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp - 4));  in unwind_frame()
73 void notrace walk_stackframe(struct stackframe *frame,  in walk_stackframe()  argument
79 		if (fn(frame, data))  in walk_stackframe()
81 		ret = unwind_frame(frame);  in walk_stackframe()
95 static int save_trace(struct stackframe *frame, void *d)  in save_trace()  argument
100 	unsigned long addr = frame->pc;  in save_trace()
114 	if (!in_entry_text(frame->pc))  in save_trace()
117 	regs = (struct pt_regs *)frame->sp;  in save_trace()
118 	if ((unsigned long)&regs[1] > ALIGN(frame->sp, THREAD_SIZE))  in save_trace()
131 	struct stackframe frame;  in __save_stack_trace()  local
146 		frame.fp = thread_saved_fp(tsk);  in __save_stack_trace()
147 		frame.sp = thread_saved_sp(tsk);  in __save_stack_trace()
148 		frame.lr = 0;		/* recovered from the stack */  in __save_stack_trace()
149 		frame.pc = thread_saved_pc(tsk);  in __save_stack_trace()
154 		frame.fp = (unsigned long)__builtin_frame_address(0);  in __save_stack_trace()
155 		frame.sp = current_stack_pointer;  in __save_stack_trace()
156 		frame.lr = (unsigned long)__builtin_return_address(0);  in __save_stack_trace()
157 		frame.pc = (unsigned long)__save_stack_trace;  in __save_stack_trace()
160 	walk_stackframe(&frame, save_trace, &data);  in __save_stack_trace()
166 	struct stackframe frame;  in save_stack_trace_regs()  local
172 	frame.fp = regs->ARM_fp;  in save_stack_trace_regs()
173 	frame.sp = regs->ARM_sp;  in save_stack_trace_regs()
174 	frame.lr = regs->ARM_lr;  in save_stack_trace_regs()
175 	frame.pc = regs->ARM_pc;  in save_stack_trace_regs()
177 	walk_stackframe(&frame, save_trace, &data);  in save_stack_trace_regs()