Note: to reference the lines of assembly code in the following explanation, I refer to the last two values of the instructionaddress because they all begin with 054d20.
注：为引用下列说明中的汇编代码行，我将引用指令地址的最后两个值，因为它们都以054d 20开头。
2
Similarly, whenever the processor develops an instructionaddress, the low-order two bits are zero.
同样，只要处理器利用指令地址，低阶的两位就为零。
3
ARM has twoinstruction modes, and the least-significant bit of the address is used to indicate which mode a given function USES.