.text
.globl _start

_start:

	mov r0, #0x1
	mov r1, #0x1		@给r1加一固定1不变
	mov r2, #0x64       @100判断
	bl sum
	cmp r1, r2
sum:
	addcc r1, r1,#0x1   @r1自增
	addcc r0, r0, r1    @r0求和
	movcc pc,lr
	
	
	
stop:
	b stop
	

.end