c中内嵌汇编movl cr3出错

captivated

回复 20# folklore


    no. both

1. movl %cr3, %eax
   
2. movq %cr3, %rax

复制代码

are valid is right.

    but, I think how many bytes are moved is not decided by movl or movq. it's decided by the oprand %eax or %rax. once the oprand has been decided, the instructions decided -- ref to my qoute, prefix is ignored, so movl %cr3, %eax and movq %cr3, %rax have different opcode. but, you also should use movl and movq -- because the compiler need it.

    oh. it seems a little complex. I don't know if I've explained clearly. and, -- Just I think so, hum... hoho.

captivated

回复 14# folklore

folklore 发表于 2012-10-06 14:52
it is the reason that "哪>>里>>" be blocked.

哪>>里>>有压迫哪>>里就有反抗

    なるほど！　it's funny, hum...

captivated

回复 11# folklore


   

folklore 发表于 2012-10-06 14:38
google.

**劣质的钛银手镯
**小苏打卖
**幻象染料
**卖百合
**卖罗汉果
**卖艾条
**电子书下载
**金镖鱼群
**星木
**卖迷魂药

you are very funny, ...

apachewebser

真是强人               

apachewebser

都不记得交叉汇编了         

captivated

嗯...
C版被标题党 求作业党等等占领了...

其实LZ很好的一个问题. 所以我回帖也回得认真. 过了两天看看, 晕, 标题党才是王道啊.