[理工] 计组指令size

楼主: gsmzxcvbnm   2016-05-30 14:27:19
http://i.imgur.com/5mRybzV.jpg
http://i.imgur.com/gfOdM16.jpg
想问一下memory accesses
看不太懂?为何是8+4?而add sub 是4?
作者: jeff830107 (蛆之别院)   2016-05-30 15:39:00
关键字:the memory access must be alignedload-store分成抓指令(35bits)跟存取资料(32bits)两部分来看add-sub就只需要抓指令(21bits)

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