x86 里 add 只跟着一个操作数是什么意思？ - V2EX

x86 里 add 只跟着一个操作数是什么意思？ - V2EX

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这是一个创建于 2187 天前的主题，其中的信息可能已经有所发展或是发生改变。

add 不是二元操作符吗？后面只跟着一个操作数是啥操作？例如

addq %eax

难道是 eax 里的值加 0 ？

3 条回复 2019-10-23 20:10:03 +08:00

1

mxT52CRuqR6o5

2019-10-23 20:01:18 +08:00 via Android

1

找了个在线汇编编译器没编译过去

2

LuckyKoala

2019-10-23 20:01:34 +08:00 via Android

1

https://stackoverflow.com/questions/48304514/what-does-this-x86-64-addq-instruction-mean-which-only-have-one-operand-from

3

b00tyhunt3r

OP

2019-10-23 20:10:03 +08:00

@LuckyKoala 我也找到这篇了！就是这里，太准确了！！谢谢大佬！

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