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delay.s
Package: arm_exam.rar [view]
Upload User: mhstny
Upload Date: 2022-08-05
Package Size: 793k
Code Size: 0k
Category:
ARM-PowerPC-ColdFire-MIPS
Development Platform:
Unix_Linux
- ;汇编指令延时程序
- EXPORT delay
- AREA DELAY,CODE,READONLY ;该伪指令定义了一个代码段,段名为Init,属性只读
- ;下面是延迟子程序
- delay
- sub r0,r0,#1 ;r0=r0-1
- cmp r0,#0x0 ;将r0的值与0相比较
- bne delay ;比较的结果不为0(r0不为0),继续调用delay,否则执行下一条语句
- mov pc,lr ;返回
- END ;程序结束符