关于ARM处理器在两种工作状态之间切换方法，以下说法正确的是（） -题库考试答案搜索网

关于ARM处理器在两种工作状态之间切换方法，以下说法正确的是（）

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2021-09-03 16:24

A、当操作数寄存器Rm的状态位bit【0】为1时，执行BXRm指令进入Thumb状态。
B、如果处理器在Thumb状态进入异常，则当异常处理（IRQ，FlQ，Undef，Abort和SWI）返回时，自动切换到Thumb状态。
C、如果处理器进行异常处理，在此情况下，把PC放入异常模式链接寄存器LR中，从异常向量地址开始执行也可以进入ARM状态。
D、改变CPSR中的工作状态位T位，就可实现ARM和Thumb状态间的切换。

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正确答案

A@#@B@#@C

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标签：联大河南科技大学嵌入式与结构

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