Rumpk: The Modular Unikernel

"The Kernel is a Library. The App is the OS."

Status: EXPERIMENTAL
Languages: Zig (L0) + Nim (L1)
Design: POSIX-hostile, Military-grade

Directory Structure

rumpk/
├── boot/           [L0] Entry & Architecture (Zig/Asm)
│   ├── start.S     Multiboot2/EFI entry point
│   └── arch/       Architecture-specific code
├── hal/            [L0] Hardware Abstraction (Zig)
│   ├── mm.zig      Physical/Virtual Memory
│   ├── irq.zig     Interrupt handling
│   ├── serial.zig  UART/Early logging
│   └── abi.zig     C-ABI export to Nim
├── core/           [L1] Logic (Nim)
│   ├── kernel.nim  kmain() entry
│   ├── sched.nim   LWKT Scheduler
│   ├── fiber.nim   Fiber/Context management
│   └── ring.nim    Disruptor buffer
├── sys/            [L2] ABI Glue
│   └── syscall.zig System call handlers
├── payload/        [L3] NPL/NPK Loaders
│   └── loader.nim  Signature verification
└── io/             I/O Subsystem
    └── governor.nim Adaptive War/Peace mode

Key Features

• Adaptive I/O: War Mode (polling) ↔ Peace Mode (interrupts)
• Disruptor Ring: Lock-free inter-fiber communication
• SipHash IDs: Collision-resistant process identification
• Ed25519: Only signed code executes

Specifications

• SPEC-008: Architecture
• SPEC-009: I/O Subsystem
• SPEC-010: Sovereign Hierarchy

Build (Coming Soon)

cd core/rumpk
zig build          # Build L0 HAL
nimble build       # Build L1 Logic