(gdb) x/20i $pc
=> 0x1406bf00:	stp	x29, x30, [sp, #-16]!
   0x1406bf04:	mov	x29, sp
   0x1406bf08:	sub	sp, sp, #0x10
   0x1406bf0c:	sturb	wzr, [x29, #-1]
   0x1406bf10:	sub	x3, x29, #0x1
   0x1406bf14:	orr	w0, wzr, #0x1
   0x1406bf18:	orr	w1, wzr, #0x4
   0x1406bf1c:	mov	w2, wzr
   0x1406bf20:	bl	0x14050c80
   0x1406bf24:	mov	w8, w0
   0x1406bf28:	cbz	w8, 0x1406bf44
   0x1406bf2c:	mov	w0, #0xdc                  	// #220
   0x1406bf30:	mov	w1, wzr
   0x1406bf34:	mov	w2, w8
   0x1406bf38:	bl	0x14065168
   0x1406bf3c:	mov	w0, wzr
   0x1406bf40:	b	0x1406bf48
   0x1406bf44:	ldurb	w0, [x29, #-1]
   0x1406bf48:	mov	sp, x29
   0x1406bf4c:	ldp	x29, x30, [sp], #16