Mesh

A lightweight OS kernel with SMP, paging, and basic IO, written in C++ and x86 Assembly.

Features

Current

• x86_64 architecture
• Limine bootloader
• UEFI and BIOS support
• SSE/SSE2 support
• SMP and AP boot
• GDT
• Per-CPU TSS and IST stacks
• IDT with exceptions and IRQ handlers
• APIC, LAPIC, and IOAPIC support
• PCI/ACPI support with RSDP/RSDT/XSDT parsing
• 4-level paging (4KB/2MB/1GB)
• Bitmap frame allocator
• Spinlock
• Atomic operations
• Serial (UART) console output
• Framebuffer text + ANSI color output
• Keyboard driver (PS/2)
• PIT interrupts (timer and sleep functions)

Planned

• Mouse driver (PS/2)
• Kernel panic and stack trace
• Kernel heap allocator
• Virtual memory management
• Per-CPU data structures
• Scheduler
• Context switching
• Userspace syscall interface
• Per-process virtual address spaces
• Memory protection and COW

Future

• ELF loader
• VFS layer
• Filesystem (FAT32, ext2, etc.)
• PCI enumeration and drivers
• Storage drivers (AHCI, NVMe, etc.)
• USB drivers
• Better terminal (scrolling, cursor, line editing, etc.)
• Framebuffer graphics primitives (2D drawing, mouse cursor, etc.)
• Window compositor
• Networking (TCP/IP stack, Ethernet drivers, etc.)
• IPC event system
• SMP task scheduling and load balancing
• Power management (ACPI S3 sleep, etc.)
• RTC/CMOS clock support

Requirements

• NASM
• A C++ compiler (GCC, Clang, etc.)
• Binutils
• Limine
• CMake
• QEMU (optional)

Installing Limine

$ git clone --branch=v10.x https://github.com/limine-bootloader/limine.git
$ cd limine
$ ./bootstrap
$ ./configure
$ make
$ sudo make install

$ ./limine.sh

Quick Start

• Clone the repository

$ git clone https://github.com/Sid110307/Mesh.git
$ cd Mesh

• Build and run on QEMU

$ ./run.sh

License

MIT