어려운건 아니구요;^^;;

ARM 레지스터 사용 규칙


r15 pc / program counter
r14 lr / link register(return address)
r13 sp/ stack pointer
r12 ip / intra procedure call scratch register

라고 쓰인 부분 공부하고 있는데요..

딴건 다 들었는데 
r12 설명할 땐 못들어서요.. r12 어떨떄 사용하는지 설명해주실분 없나요 ㅠㅠ
?