引用不带美元符号的常量是否有不同的含义? [英] Does referencing constants without a dollar sign have a distinct meaning?

问题描述

我写道:

mov 60, %rax

GNU as接受了，尽管我应该写过

GNU as accepted it, although I should have written

mov $60, %rax

两个这样的通话之间有区别吗?

Is there any difference between two such calls?

推荐答案

是；第一种将存储在地址60中的值存储在内存中，并将结果存储在rax中，第二种将立即值60存储在rax中.

Yes; the first loads the value stored in memory at address 60 and stores the result in rax, the second stores the immediate value 60 into rax.

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