问题描述
MOV可能是每个人在学习ASM时都会学到的第一条指令.
MOV is probably the first instruction everyone learns while learning ASM.
刚才我遇到了一本书用于IA32体系结构的GNU/Linux中的汇编语言编程，由Rajat Moona 表示:断开的链接已删除)
Just now I encountered a book Assembly Language Programming in GNU/Linux for IA32 Architectures By Rajat Moona which says: (broken link removed)
但是我知道它是MOV dest, src.就像用src加载dest".甚至 Wiki 也是如此.
But I learnt that it is MOV dest, src. Its like "Load dest with src". Even Wiki says the same.
我并不是说作者错了.我知道他是对的.但是我在这里想念什么?
I'm not saying that the author is wrong. I know that he is right. But what am I missing here?
btw ..他正在使用GCC的as汇编这些指令.但这不应该改变指令语法吗?
btw.. he is using GCC's as to assemble these instructions. But that shouldn't change the instruction syntax right?
推荐答案
mov dest, src被称为 Intel语法 . (例如mov eax, 123)
mov src, dest被称为 AT& T语法 . (例如mov $123, %eax)
包括GNU汇编程序在内的UNIX汇编程序都使用AT& T语法，我所知道的所有其他x86汇编程序都使用Intel语法.您可以阅读维基百科上的差异.
UNIX assemblers including the GNU assembler uses AT&T syntax, all other x86 assemblers I know of uses Intel syntax. You can read up on the differences on wikipedia.
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