rumpk/core/README.md

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# Rumpk Core (L1)
**Language:** Nim
**Purpose:** Architecture-agnostic kernel logic
## Module Index
| File | Purpose |
|------|---------|
| `kernel.nim` | Main Orchestrator (`kmain`) |
| `ion.nim` | ION Control Plane & Channel API |
| `fiber.nim` | Cooperative fiber abstraction |
| `watchdog.nim` | Autonomous Immune System (Healer) |
| `ring.nim` | Lock-free Sovereign ring buffers |
| `panicoverride.nim` | Freestanding panic handler |
## Architecture Independence
This folder contains **no architecture-specific code**. All platform-specific
details are handled by the HAL layer (`../hal/`).
Compile-time architecture selection uses Nim's `when defined()`:
```nim
when defined(amd64):
const CONTEXT_SIZE = 56
elif defined(arm64):
const CONTEXT_SIZE = 96
elif defined(riscv64):
const CONTEXT_SIZE = 112
```
## Dependencies
- Imports `console_write`, `rumpk_halt` from HAL (Zig L0)
- Imports `cpu_switch_to` from arch-specific assembly
- Uses `mm:arc` memory management (no GC)
## Build
Built via `../build.sh [aarch64|x86_64|riscv64]`