# rustos

**Repository Path**: rogerskelamen/rustos

## Basic Information

- **Project Name**: rustos
- **Description**: 用来存储学习blog-os时的代码，原教学文档地址：https://os.phil-opp.com/zh-CN/
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-06-25
- **Last Updated**: 2024-07-16

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 1. Build freestanding executable program

This means:
- no syscall
- no program memory model
- no ...

# 2. The three big deal of bootloader

1. boot the computer

    first stage bootloader: find a <512 bytes program
    second stage bootloader: load a much bigger program to wake the computer

2. change mode of CPU(x86 specification)

    16 bit real mode -> 32 bit protected mode -> 64 bit long mode

3. get memory map

    read memory map and deliver it to kernel