系统调用实现 [英] System calls Implementation

问题描述

如果用户应用程序进行系统调用，则会触发软件中断/异常.如何查看用于生成软件中断的源代码?

If a user application makes a system call , a software interrupt/exception is triggered. How can I see the source code for generating a software interrupt ?

推荐答案

在 Linux汇编中进行了解释如何操作.并且您应该阅读Wikipedia 系统调用页(以及有关 syscalls(2)手册页.另请参见此答案和此一.还要查看 Gnu Libc & musl-libc 源代码.还学习使用strace找出由给定命令或进程进行的系统调用.

It is explained in Linux Assembly Howto. And you should read wikipedia syscall page (and also about VDSO), and also intro(2) & syscalls(2) man pages. See also this answer and this one. Look also inside Gnu Libc & musl-libc source code. Learn also to use strace to find out which syscalls are made by a given command or process.

另请参阅与系统相关的调用约定和应用程序二进制接口规范.对于x86-64，它是此处.

See also the calling conventions and Application Binary Interface specification relevant to your system. For x86-64 it is here.

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