8.14 作业

1.

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.globl _start_start:mov r0,#0x9mov r1,#0xfbl loop
loop:cmp r0,r1beq stopsubhi r0,r1subls r1,r0mov pc,lr
stop:b stop

 2.实现1-100的和

.text
.globl _start_start:mov r0,#0x1bl loop
loop:cmp r0,#0x64bhi stopaddls r1,r0addls r0,#0x1mov pc,lr
stop:b stop