【摘要】 LINUX,一个优秀的代码开放的操作系统。对其内核代码的分析,无论对编程或者学习操作系统原理都将事半功倍。然而处于安全性考虑,CPU的设计者将系统空间和用户空间分离,这个措施造成了对内核代码进行调试运行的困难。有许多方法可以使用户程序进入系统空间,比如中断方式、系统调用方式……我们介绍的是采用模块的方式使应用程序进入系统空间。更多还原

【Abstract】 The LINUX is an outstanding codeopened operating system. For programming on the platforms or learning the principles of the OS, the analysis of the LINUX’ kernel is a shortcut. However the distinction between the system space and the user space is implemented due to the consideration of the security. Moreover this mechanism conceived by the CPU designers seems quite cumbersome when compiling and debugging the kernel programs. Actually there are some methods for the access to the system space, such as the interruption and the system call. Hence a method of getting the user program into the system space by modules is introduced.更多还原