alexvoste
Cervus x86_64 Operating System
Cervus - This is a modern 64-bit operating system written for the x86_64 architecture. It is currently under development.
Technical Features
Cervus is currently in the active development phase. The kernel implements core low-level primitives required for a stable execution environment:
Core Architecture
- Boot Protocol: Utilizes the Limine bootloader (Barebone profile).
- Memory Management:
- PMM: Bitmap-based Physical Memory Manager.
- VMM: Virtual Memory Management with 4-level paging support.
- CPU Initialization: Custom GDT (Global Descriptor Table) and IDT (Interrupt Descriptor Table) implementation.
- Acceleration: Native support for SIMD instructions (SSE/AVX) with proper state saving.
Roadmap & Progress
| Component | Status | Description |
|---|---|---|
| Bootloader | Done | Limine Integration |
| Graphics/PSF | Done | Framebuffer & Text Rendering |
| Memory (PMM/VMM) | Done | Physical & Virtual Memory Management |
| Interrupts (IDT) | Done | Handling exceptions and IRQs |
| ACPI | Done(without rebooting) | Table parsing & SDT discovery |
| APIC / IOAPIC | Done | Advanced Interrupt Controllers |
| Timers (HPET/APIC) | Done | High Precision Event Timers |
| SMP | Done | Multicore Initialization |
| Scheduler | Done/In parallel development | Preemptive Multitasking |
| Userspace | In parallel development | Syscalls & Ring 3 execution |
Build Environment
Prerequisites
To build Cervus, you need a cross-compilation toolchain and the following utilities:
- Compiler:
x86_64-elf-gcc - Assemblers:
nasm - Emulation:
qemu-system-x86_64 - ISO Tools:
xorriso,mtools
Compiling and Running
1. Clone the repository:
bash
git clone https://github.com/VeoQeo/Cervus.git
cd Cervus
2. Compile and launch in QEMU:
./build run
3. Deploy to hardware (Flash Drive): WARNING: This will overwrite data on the target device.
sudo ./build flash
Contributing
Cervus is an open-source research project. Contributions regarding bug fixes, hardware support, or documentation are welcome. Please feel free to open an Issue or submit a Pull Request.
License
This project is licensed under the GPL-3.0 License. See the LICENSE file for details.