.section .data.output: 	.ascii "%d\n\000".section .text	.global mainmain: 	mov ip, sp  	stmfd sp!, {fp,ip,lr,pc}  	sub fp, ip, #4 	sub sp, sp, #80 	@memory and register	mov r3, # 1 	mov r0,r3		loop: 	cmp r0,# 15	bge stop 	mov r1,# 1  	add r2, r0, r1 	mov r0, r2 		@保护现场	str r0, [fp,#-16]			str r0,[fp,# -20 ] 	ldr r0, =.output  	ldr r1,[fp,# -20 ] 	bl printf  		@恢复现场	ldr r0,[fp,#-16]	b loop   stop:	ldmea fp, {fp,sp,pc}