为什么用x86寄存器命名它们? [英] Why are x86 registers named the way they are?

问题描述

例如，累加器的名称为EAX，而指令指针的名称为IP.我也知道有称为CL和DH的字节.我知道所有名称都必须有一个约定，但这是什么?

For example, the accumulator is named EAX and, while the instruction pointer is called IP. I also know that there are bytes called CL and DH. I know there must be a convention to all of the names, but what is it?

推荐答案

C和D是数字/类型，H是高位寄存器的高位，L是高位寄存器的低位. http://en.wikipedia.org/wiki/X86

The C and the D are numbers/types and H for high and L for low parts of the higher register. http://en.wikipedia.org/wiki/X86

维基百科解释得很好.

更多来自维基百科:

1. AX/EAX/RAX:累加器
2. BX/EBX/RBX:基本
3. CX/ECX/RCX:计数器
4. DX/EDX/RDX: 数据/常规

1. AX/EAX/RAX: accumulator
2. BX/EBX/RBX: base
3. CX/ECX/RCX: counter
4. DX/EDX/RDX: data/general

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