# Cervus x86_64 Operating System [](https://www.gnu.org/licenses/gpl-3.0) [](https://en.wikipedia.org/wiki/X86-64) []() **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](https://github.com/limine-bootloader/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 bash git clone https://github.com/VeoQeo/Cervus.git cd Cervus ``` _2. Compile and launch in QEMU:_ ```bash ./build run ``` _3. Deploy to hardware (Flash Drive):_ **WARNING: This will overwrite data on the target device.** ```bash 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](LICENSE) file for details. ---