https://github.com/jbouron/x86_64-kernel

A bootloader and kernel for the x86_64 architecture, written in x86 assembly and C++ respectively
https://github.com/jbouron/x86_64-kernel

bootloader kernel operating-system x86 x86-64

Last synced: about 15 hours ago
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A bootloader and kernel for the x86_64 architecture, written in x86 assembly and C++ respectively

• Host: GitHub
• URL: https://github.com/jbouron/x86_64-kernel
• Owner: JBouron
• License: mit
• Created: 2024-02-28T01:28:39.000Z (9 months ago)
• Default Branch: master
• Last Pushed: 2024-03-29T04:11:18.000Z (8 months ago)
• Last Synced: 2024-03-29T06:23:09.275Z (8 months ago)
• Topics: bootloader, kernel, operating-system, x86, x86-64
• Language: C++
• Homepage:
• Size: 479 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# x86_64-kernel

A bootloader and kernel for the x86_64 architecture, written in x86 assembly and

C++ respectively.

The two-stage bootloader is 100% hand-written x86 assembly. As of now it is

capable of:

- Initializing the CPU from real-mode all the way to 64-bit mode.

- Parse the E820 memory map from the BIOS.

- Read the kernel ELF image from the boot disk (the ELF immediately follows the

  bootloader's second stage on disk, i.e. no partitioning and no filesystem

  support).

- Parse the kernel ELF and load its segments to memory.

- Jump to the 64-bit kernel entry point.

The C++ kernel is still **work in progress**. As of now the following are

supported:

- Basic CPU initialization: segmentation, interrupts, paging

- ACPI table parsing

- IO-APIC(s)

- LAPIC

- Multicore support, including Inter-Processor-Interrupts

- Processes and context switch, although the scheduler is not yet implemented.