> For the complete documentation index, see [llms.txt](https://mit-public-courses-cn-translatio.gitbook.io/mit6-s081/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mit-public-courses-cn-translatio.gitbook.io/mit6-s081/lec06-isolation-and-system-call-entry-exit-robert.md).

# Lec06 Isolation & system call entry/exit (Robert)

准备工作：阅读【1】中第4章，除了4.6；阅读RISCV.h【2】；阅读trampoline.S【3】；阅读trap.c【4】

【1】<https://pdos.csail.mit.edu/6.828/2020/xv6/book-riscv-rev1.pdf>

【2】<https://github.com/mit-pdos/xv6-riscv/blob/riscv/kernel/riscv.h>

【3】<https://github.com/mit-pdos/xv6-riscv/blob/riscv/kernel/trampoline.S>

【4】<https://github.com/mit-pdos/xv6-riscv/blob/riscv/kernel/trap.c>