计算从分段地址立即地址

Question

例如，说我有这样的：

0x33:0x10 

，我想在表单，以获得一个地址：

0x???????? 

从中

。这样做最简单的方法是什么？这是在Linux x86上。

Answer 1

The selector in the segment register is decoded to give a descriptor table specifier and a descriptor table index. The base given in the table and index is added to the offset in order to give a final address within process space.为了处理存储器转换到物理存储器，the page tables must be read and decoded.