ios - osx上的 ‘I Space’和 ‘D Space’是什么以及它们之间的区别

在 sys/ptrace.h 中，我看到了类似的内容:

@define PT_READ_I  1 /* read world in child's I space*/
@define PT_READ_D  2 /* read world in child's D space*/
@define PT_READ_U  3 /* read world in child's user structure*/

什么是“I Space”和“D Space”以及“用户结构”？

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Best Answer-推荐答案

引用手册页:

Traditionally, ptrace() has allowed for machines with distinct address spaces for instruction and data, which is why there are two requests: conceptually, PT_READ_I reads from the instruction space and PT_READ_D reads from the data space. In the current NetBSD implementation, these two requests are completely identical.

现在关于 PT_READ_U:

This space contains the registers and other information about the process; its layout corresponds to the user structure in the system.

关于ios - osx上的 ‘I Space’和 ‘D Space’是什么以及它们之间的区别，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10187624/