Contract Lifecycle (VM)

Introduction

The entire smart contract development flow goes through three phases:

• Smart-Contract development. A developer writing a smart contract on L1X. They will be using Rust programming language which provides a safe and efficient environment for contract development. L1X Smart Contract SDK provides them a safe API they can use to build such contracts.

• Building the smart-contract. The code goes through various transformations to reach its final form.

  • Macro pre-processing. By leveraging Rust’s powerful metaprogramming capabilities we can create high-level abstractions for the ease of development on L1X.

  • LLVM. The LLVM compiler infrastructure will be used for compiling and optimizing Rust code into the platform-agnostic LLVM Intermediate Representation (IR).

  • LLVM IR -> WASM. Enabled by the existing LLVM compilation capabilities.

  • WASM -> eBPF. A custom translator takes the generated WASM file and translates it to eBPF bytecode.

• Running. The resulting ELF file with eBPF bytecode is the contract binary that developer publishes on-chain.

  • L1X VM. The Layer One X Virtual Machine responsible for executing the smart contracts in a secure and efficient manner, integrating with the L1X blockchain and handling state updates.

L1X VM Flow