X86 架构学习

从前学习８０８６架构时，感觉Intel架构掌握的还不错。

现在发现Ｘ８６架构可能还有一些不同。

所以总结一下知识：

段编址：

For example, a program can keep its code (instructions) and stack in separate
segments. Code addresses would always refer to the code space, and stack
addresses would always refer to the stack space. The following notation is used to
specify a byte address within a segment:
Segment-register:Byte-address
For example, the following segment address identifies the byte at address FF79H in
the segment pointed by the DS register:
DS:FF79H
The following segment address identifies an instruction address in the code segment.
The CS register points to the code segment and the EIP register contains the address
of the instruction.
CS:EIP

名词总结：

The range of memory that can be addressed is called an address space.

The processor also supports segmented addressing. This is a form of addressing where a program may have many independent address spaces, calledsegments.