mulx 的 AT&T/GAS 语法是什么?

What is the AT&T / GAS syntax for mulx?

Wikibooks x86 Assembly 说:

GAS instructions generally have the form mnemonic source, destination. For instance, the following mov instruction:

但是它没有说明这条规则有什么例外,而且我找不到 table 的说明。但是,official AS documentation doesn't seem to have a section that gives syntax for all the instructions (though it's pretty long, and I might have just missed the section). The normal x86 reference that I use for instructions 并没有明确指定方言,它的参数按目标、源顺序排列。

GAS / AT&T 中 mulx 的语法是什么,有没有参考资料可以让我以后轻松查找此类内容?

本维基百科:https://en.wikibooks.org/wiki/X86_Assembly/Arithmetic

不包括 MULX,但它确实显示了 3 个操作数 IMUL 指令,如下所示:

imul    dest, src, aux                  (Intel syntax)
imul    aux, src, dest                  (GAS Syntax)

所以 MULX 将是:

mulx    dest_hi, dest_lo, src1          (Intel syntax)
mulx    src1, dest_lo, dest_hi          (GAS Syntax)