.text
.org 0x20

tab:  .space 8

.global _start
_start:
  adr r0, tab
  mov r1, #0
  mov r2, #0xff

loop:
  strb r2, [r0, r1]
  add r1, #1
  cmp r1, #7
  bls loop

_end:
  b _end