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Homework 2的网站链接:MIT 6.828 Homework 2: shell 题目 下载sh.c文件,在文件中添加相应代码,以支持以下关于shell的功能: 实现简单shell命令,比如cat/echo/grep/ls/sort/uniq/wc等 实现I/O重定向 实现管道 Optional challenge exercises: Implement lists of commands, separated by ";" Implement sub shells by im…
本作业的网站链接:MIT 6.828 Homework 1: boot xv6 问题 Exercise: What is on the stack? While stopped at the above breakpoint, look at the registers and the stack contents: (gdb) info reg ... (gdb) x/24x $esp ... (gdb) Write a short (3-5 word) comment next to eac…
<MIT 6.828 Lab1: Booting a PC>实验报告 本实验的网站链接见:Lab 1: Booting a PC. 实验内容 熟悉x86汇编语言.QEMU x86仿真器.PC开机引导流程 测试6.828 内核的启动加载器(boot loader) 研究6.828 内核的初始化模板(JOS) 实验题目 注意:部分Exercise的解答过程较长,因此专门新建一个文档来记录解答过程,而在本文中给出其链接. Exercise 1:阅读汇编语言资料 Exercise 1. Familia…
本实验的网站链接:MIT 6.828 Lab 1 Exercise 12. 题目 Exercise 12. Modify your stack backtrace function to display, for each eip, the function name, source file name, and line number corresponding to that eip. In debuginfo_eip, where do __STAB_* come from? This q…
本实验的网站链接:MIT 6.828 Lab 1 Exercise 11. 题目 The above exercise should give you the information you need to implement a stack backtrace function, which you should call mon_backtrace(). A prototype for this function is already waiting for you in kern/moni…
本实验的网站链接:MIT 6.828 Lab 1 Exercise 10. 题目 Exercise 10. To become familiar with the C calling conventions on the x86, find the address of the test_backtrace function in obj/kern/kernel.asm, set a breakpoint there, and examine what happens each time it…
本实验的网站链接:MIT 6.828 Lab 1 Exercise 8. 题目 Exercise 8. Read through kern/printf.c, lib/printfmt.c, and kern/console.c, and make sure you understand their relationship.We have omitted a small fragment of code - the code necessary to print octal numbers u…
本实验链接:mit 6.828 lab1 Exercise 7. 题目 Exercise 7. Use QEMU and GDB to trace into the JOS kernel and stop at the movl %eax, %cr0. Examine memory at 0x00100000 and at 0xf0100000. Now, single step over that instruction using the stepi GDB command. Again,…
本实验链接:mit 6.828 lab1 Exercise 4. 题目 Exercise 4. Read about programming with pointers in C. The best reference for the C language is The C Programming Language by Brian Kernighan and Dennis Ritchie (known as 'K&R'). We recommend that students purchase…
本实验的网站链接:mit 6.828 lab1 Exercise 3. 题目 Exercise 3. Take a look at the lab tools guide, especially the section on GDB commands. Even if you're familiar with GDB, this includes some esoteric GDB commands that are useful for OS work. Set a breakpoint at…