Introduction

This kernel is written as a educative project. The goal is to have a kernel able to run a basic shell. To allow that, this kernel have to implement :

• Protected mode (loading gdt)
• Manage interrupt (loading idt and enabling interrupt)
• Manage IRQ (enable PIC)
• Running and Userland (TSS)
• Let the userland call the kernel (syscall)
• Running multiple userland (ordonnanceur)
• Running elf binary
• Having a small libc and needed syscall to run the shell
• (Bonus) Having a basic visual interface (VGA ?)

This kernel has been written using :

• The tutorial Pépin OS - Réaliser son propre système (in french): https://michelizza.developpez.com/realiser-son-propre-systeme
• The educative k project from former EPITA (Engineering School) system laboratory LSE: https://k.lse.epita.fr/ https://github.com/Galli24/kernel-k-project
• The ressources on the website OSDev: https://wiki.osdev.org/Main_Page
• The in Intel® 64 and IA-32 Architectures, Software Developer’s Manual, Volume 3A: System Programming Guide, Part 1: https://www.intel.com/content/www/us/en/developer/articles/technical/intel-sdm.html