22  *	stmdb	sp!, {fp, ip, lr, pc}
23  *	sub	fp, ip, #4
26  *	ldm	sp, {fp, sp, pc}
31  *	stmdb	{..., fp, lr}
32  *	add	fp, sp, #x
37  *	sub	sp, fp, #x
38  *	ldm	{..., fp, pc}
50 	unsigned long fp = frame->fp;  in frame_pointer_check()  local
55 	 * stack to another, with FP and SP pointing to different stacks,  in frame_pointer_check()
56 	 * skipping the FP boundary check at this point.  in frame_pointer_check()
68 	if (fp < low + 4 || fp > high - 4)  in frame_pointer_check()
71 	if (fp < low + 12 || fp > high - 4)  in frame_pointer_check()
80 	unsigned long fp = frame->fp;  in unwind_frame()  local
108 	frame->sp = frame->fp;  in unwind_frame()
109 	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp));  in unwind_frame()
110 	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp + 4));  in unwind_frame()
112 	frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp - 12));  in unwind_frame()
113 	frame->sp = READ_ONCE_NOCHECK(*(unsigned long *)(fp - 8));  in unwind_frame()
114 	frame->pc = READ_ONCE_NOCHECK(*(unsigned long *)(fp - 4));  in unwind_frame()
119 					(void *)frame->fp, &frame->kr_cur);  in unwind_frame()
146 			      unsigned long fp, unsigned long sp,  in start_stack_trace()  argument
149 	frame->fp = fp;  in start_stack_trace()