Building a system of this magnitude requires absolute discipline in the order
of operations. If you attempt to build the Lexer before the memory model is
proven, or the x86 JIT before the Shadow Stack is stabilized, the system will
collapse under its own complexity.
Here is your chronological roadmap. When you open a new dev-chat, you will
tackle exactly one milestone at a time, proving it with unit tests before
moving to the next.
Phase 1: The Core Type System & Memory Ledger (JavaScript)
Before the VM can execute complex logic, it must be able to safely manage
memory and types.
 * Milestone 1.1: Implement the 32-bit Tagged Pointer bitwise logic
(encoding/decoding Object, Integer, String, and Array tags).
 * Milestone 1.2: Build the Global Handle Ledger (GHL). Implement the 24-byte
Intrusive Linked List on top of a single Int32Array (Active/Free head
pointers, REF_INC, REF_DEC).
 * Milestone 1.3: Implement SYS_STR_ALLOC and SYS_STR_CONCAT using the GHL.
Verify zero memory leaks during allocation and deallocation.
Phase 2: The Object Model & Blueprint Loader
With memory managed, the engine needs to understand what an "Object" is.
 * Milestone 2.1: Define the Int32Array layout for the Master Object Index
(MOI).
 * Milestone 2.2: Build the Blueprint Loader. Write a JS function that takes a
mock Blueprint Header, VTable, and Constant Pool, and correctly initializes an
Instance Record in the MOI.
 * Milestone 2.3: Implement LOAD_VAR and STORE_VAR opcodes. Prove the VM can
read/write to the allocated state block of a specific Object Instance.
Phase 3: The Complete Execution Engine (The Shadow Stack & ABI)
This is where you finalize the prototype we built today into a
production-ready interpreter.
 * Milestone 3.1: Formalize the Shadow Stack. Implement the exact calling
convention (preserving R1-R7, leaving R0 for returns, saving IP and SP).
 * Milestone 3.2: Implement the full ALU opcode suite (Add, Sub, Mul, Bitwise)
ensuring they correctly handle and validate Tagged Integers.
 * Milestone 3.3: Implement ECALL (External Call). Prove that Object A can
dynamically call a function on Object B via the MOI and VTable.
Phase 4: The JavaScript MVP Compiler
Stop writing raw hex dumps. It's time to generate bytecode from text.
 * Milestone 4.1: Build the Lexer. Convert test.c strings into a stream of
tokens.
 * Milestone 4.2: Build the Parser. Convert tokens into the strict JSON
Abstract Syntax Tree (AST). Plug this into your ast-xplorer.js tool to
visually verify it.
 * Milestone 4.3: Build the Code Generator. Walk the AST to emit the 32-bit
Blueprint binary format (Header, Constants, VTable, Bytecode). Prove it by
compiling and executing "Hello World".
Phase 5: Concurrency & Async I/O
Transform the VM from a blocking script executor into a cooperative
Microkernel.
 * Milestone 5.1: Implement the Execution Context (CTX) struct, the Run Queue,
and the Wait Table.
 * Milestone 5.2: Implement the Gas Scheduler. Prove the engine safely
preempts infinite loops without crashing the JS thread.
 * Milestone 5.3: Implement the STATE_YIELD_IO trap. Write a mock asynchronous
Efun (SYS_NET_READ via setTimeout) and prove the Shadow Stack correctly
suspends and resumes when the "network" replies.
Phase 6: Advanced LPC Features
With the pipeline complete, expand the language capabilities.
 * Milestone 6.1: Implement Mappings (Hash tables mapping Tagged Pointers to
Tagged Pointers via Host Efuns).
 * Milestone 6.2: Implement Closures (Tag 101).
 * Milestone 6.3: Implement Blueprint Flattening (Inheritance). Prove the JS
Compiler can merge multiple .c files into a single flat VTable and State
Block.
Phase 7: The Bare-Metal JIT Translation (C / x86)
Once the architecture is 100% proven in the JavaScript MVP, you port the
execution core to HAUKI-X86.
 * Milestone 7.1: Rewrite the Global Handle Ledger and MOI in standard C,
using a contiguous uint8_t memory arena.
 * Milestone 7.2: Write the x86 JIT Compiler. Read the exact same Blueprint
binary generated by your JS Compiler, and emit raw x86 opcodes into an
executable memory page.
 * Milestone 7.3: Boot HAUKI-X86, load the JIT'd Blueprint, and execute it in
Ring 0.
How to use this in Dev-Chats
When you open a new dev-chat to start coding, do not paste this entire
conversation.
Instead, start the chat with a hyper-focused prompt like:
> "I am building an isomorphic VM. Today we are doing Milestone 1.2. Here is
the specification for the 24-byte Intrusive Linked List in a flat Int32Array.
Let's write the JS allocation and deallocation logic."
> 
Keep this master thread bookmarked. As you complete phases, or if a dev-chat
discovers a flaw in the memory layout, bring that realization back here so we
can update the Master Architecture.