| # SoulVM JIT Integration | |
| **Status:** Phase 3D Architecture (Ready for Implementation) | |
| **Date:** 2026-07-30 | |
| **Target:** Runtime bytecode verification + native code generation | |
| --- | |
| ## Overview | |
| **What:** Link Lean/Coq formal proofs directly to runtime bytecode generation. | |
| **Why:** Every EmojiScript program verification → Cranelift native code (proven correct). | |
| **How:** 3-stage pipeline: Lean theorems → proof certificates → JIT code generation. | |
| --- | |
| ## Architecture | |
| ### Stage 1: Proof Extraction (Lean → Certificates) | |
| **Input:** `Skclisp.Equivalence.lean` (proven theorems) | |
| **Output:** Proof certificates (binary format): | |
| ``` | |
| Certificate struct: | |
| - theorem_id: u32 (T01-T11 proof ID) | |
| - proof_hash: [u8; 32] (Blake3 of proof) | |
| - theorems_covered: u32 (bitmask: T01-T11) | |
| - machine_state_invariants: u32 (validity checks) | |
| - cranelift_backend: String ("x86_64" | "aarch64") | |
| - optimization_level: u8 (0=none, 1=basic, 2=aggressive) | |
| ``` | |
| ### Stage 2: Proof Certificate Validation | |
| **Input:** Proof certificate + EmojiScript bytecode | |
| **Validation checks:** | |
| 1. Blake3(certificate) matches on-chain WORM record ✓ | |
| 2. Theorem ID covers the bytecode operations ✓ | |
| 3. Machine state invariants apply to execution context ✓ | |
| 4. Cranelift backend available for target architecture ✓ | |
| **Output:** Validated proof token (allows JIT codegen) | |
| ### Stage 3: JIT Code Generation (Bytecode → Native) | |
| **Input:** EmojiScript bytecode + proof token | |
| **Cranelift pipeline:** | |
| ``` | |
| EmojiScript bytecode | |
| ↓ [parse emoji→SigilOp] | |
| Intermediate representation (IR) | |
| ↓ [apply proof invariants] | |
| Verified IR (with theorem bounds) | |
| ↓ [Cranelift backend] | |
| Machine code (x64 or ARM64) | |
| ↓ [seal with Ed25519] | |
| Signed native code block | |
| ↓ [memory map + execute] | |
| Runtime execution (proven correct) | |
| ``` | |
| --- | |
| ## Integration Points | |
| ### 1. EmojiScript Compiler Hook | |
| ```clojure | |
| (defn compile-with-proof [source proof-certificate] | |
| "Compile EmojiScript to native code using proof certificate" | |
| (let [bytecode (emoji/compile-emojiscript source) | |
| validity (validate-proof-cert proof-certificate bytecode)] | |
| (if (:valid? validity) | |
| (jit-compile-cranelift bytecode proof-certificate) | |
| (throw (ex-info "Proof does not cover bytecode" validity))))) | |
| ``` | |
| ### 2. MCP Tooling | |
| New MCP tool: `compile_with_proof` | |
| ```json | |
| { | |
| "name": "compile_with_proof", | |
| "description": "Compile EmojiScript to native code with formal proof", | |
| "parameters": { | |
| "source": "EmojiScript source code", | |
| "proof_certificate": "Blake3 + Ed25519 signed proof (base64)", | |
| "target": "x86_64 or aarch64" | |
| }, | |
| "returns": { | |
| "native_code": "Cranelift-generated machine code (base64)", | |
| "proof_id": "Lean theorem ID used (T01-T11)", | |
| "performance_estimate": "estimated execution time (ns)" | |
| } | |
| } | |
| ``` | |
| ### 3. WORM Ledger Sealing | |
| Every JIT compilation requires WORM entry: | |
| ``` | |
| Event struct: | |
| - timestamp: u64 | |
| - source_hash: Blake3(bytecode) | |
| - proof_id: u32 | |
| - native_code_hash: Blake3(machine code) | |
| - actor_signature: Ed25519 | |
| - status: "compiled" | "verified" | "executed" | |
| ``` | |
| --- | |
| ## Proof Invariants Enforced by JIT | |
| ### T01: Step Determinism | |
| - Native code generation is deterministic | |
| - Same bytecode → identical machine code | |
| - Verified: Blake3 hash before/after compilation must match | |
| ### T04: State Preservation | |
| - Every native instruction preserves machine state validity | |
| - Stack bounds checked at entry + exit | |
| - Heap invariants maintained throughout execution | |
| ### T08: Mutation Journal Completeness | |
| - Every mutation recorded to WORM before commit | |
| - Generation counter verified at boundary | |
| - Rollback points marked in machine code | |
| ### T10: Rollback Soundness | |
| - Native code includes rollback jump targets | |
| - State snapshots at generation boundaries | |
| - Recovery code verified by proof certificate | |
| --- | |
| ## Implementation Roadmap | |
| ### Phase 3D-1: Proof Certificate Format (2h) | |
| - Define binary proof certificate struct (20 lines) | |
| - Blake3 + Ed25519 signing/verification (30 lines) | |
| - Serialization → base64 for MCP transport (15 lines) | |
| **Artifacts:** | |
| - `Skclisp/ProofCertificate.lean` (65 lines) | |
| - `skclisp_proof_certificate.ts` (Node.js bindings, 40 lines) | |
| ### Phase 3D-2: Cranelift Backend Wiring (4h) | |
| - Cranelift dependency integration (10 lines package.json) | |
| - EmojiScript → Cranelift IR translation (80 lines) | |
| - x86_64 + aarch64 target support (50 lines) | |
| **Artifacts:** | |
| - `native/cranelift-backend.rs` (150 lines) | |
| - `src/snapkitty/lisp/jit.cljs` (120 lines) | |
| ### Phase 3D-3: Proof Invariant Enforcement (3h) | |
| - T01-T04 checks compiled into native code (40 lines) | |
| - T08-T10 mutation/rollback instrumentation (30 lines) | |
| - Performance profiling + optimization (20 lines) | |
| **Artifacts:** | |
| - `native/jit-verification.rs` (90 lines) | |
| - Test suite + benchmarks (50 lines) | |
| ### Phase 3D-4: WORM Integration (2h) | |
| - Ledger entry generation after compilation (25 lines) | |
| - Proof certificate → WORM link (15 lines) | |
| - Rollback coordination (20 lines) | |
| **Artifacts:** | |
| - `src/snapkitty/lisp/jit-ledger.cljs` (60 lines) | |
| - Integration tests (30 lines) | |
| **Total Phase 3D:** ~11 hours, 645 lines code + tests | |
| --- | |
| ## Security Model | |
| ### Proof-of-Correctness Execution | |
| 1. **Proof Certificate** → Blake3-signed theorem ID | |
| 2. **Bytecode** → Compile to IR | |
| 3. **Invariant Check** → Does proof cover all ops? | |
| 4. **Code Generation** → Cranelift → native | |
| 5. **Sealing** → Ed25519 sign machine code | |
| 6. **Execution** → Verified native code only | |
| **Threat model:** If the proof certificate matches the WORM record, we execute knowing: | |
| - Lean theorem verified the operation semantics | |
| - Machine state invariants are enforced | |
| - No mutation occurs without logging | |
| - Rollback points are reachable | |
| ### Attack Surface | |
| Protected: | |
| - ✅ Proof substitution (Ed25519 signature) | |
| - ✅ Bytecode modification (Blake3 check before compile) | |
| - ✅ Code injection (proof certificate required for JIT) | |
| - ✅ State corruption (T04 preservation enforced) | |
| Assumptions: | |
| - ❌ Proof certificate is honest (must be from trusted Lean verifier) | |
| - ❌ Cranelift is bug-free (compiler bugs will pass through) | |
| - ❌ Private keys are not compromised (Ed25519 verification only) | |
| --- | |
| ## Performance Target | |
| | Operation | Baseline | With JIT | | |
| |-----------|----------|----------| | |
| | Compile bytecode | 2.5µs | 15µs (compile phase) | | |
| | Execute (interpreted) | 500ns/op | — | | |
| | Execute (native) | — | 50ns/op (10x faster) | | |
| | Proof verification | — | 1.2µs | | |
| | WORM ledger seal | 2.1µs | 2.1µs (unchanged) | | |
| **Breakeven:** ~300 operations before native execution pays off. | |
| --- | |
| ## Next Phase (Phase 4: Production Hardening) | |
| - Distributed JIT compilation (load balancing across 200 repos) | |
| - Hardware acceleration profiles (AVX-512, SVE for ARM) | |
| - Proof certificate caching + precompilation | |
| - End-to-end benchmarking (proof→code→execution) | |
| --- | |
| **Built by:** Jessica (SnapKittyWest) + Claude Code | |
| **Theorem Foundation:** Lean 4 M02-M03 (Coq-equivalent) | |
| **Runtime:** Cranelift IR → x86_64/aarch64 native | |
| **Security:** Ed25519 proof certificates + Blake3 validation | |
| **Status:** ARCHITECTURE COMPLETE, READY FOR PHASE 3D-1 | |