V8 Bytecode Decompiler

Technical Report: V8 Bytecode Decompiler

1. Introduction

V8 is Google’s high-performance JavaScript and WebAssembly engine, used in Chrome and Node.js. When V8 compiles JavaScript, it first generates bytecode for the Ignition interpreter. A V8 bytecode decompiler is a tool that takes this low-level bytecode and reconstructs a higher-level, human-readable intermediate representation (IR), often resembling a simplified JavaScript or a control-flow graph.

• Map instruction sequences (e.g., LdaSmi, Add, Star) to binary ops.

6. Available Tools and Techniques

6.1 Native Tools (Disassembly)

The primary way to analyze V8 bytecode is through the engine itself using flags. v8 bytecode decompiler