> For the complete documentation index, see [llms.txt](https://docs.pharos.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pharos.xyz/resources/evm.md). # EVM The Ethereum Virtual Machine (EVM) is the core component of the Ethereum blockchain, responsible for executing smart contracts and managing the state of the network. It acts as a decentralized computer, maintaining a global state and executing program instructions defined in smart contracts. Key features include: * **State Machine**: Executes transactions and changes the blockchain state. * **Deterministic Execution**: Given the same input, it will always produce the same output. * **Isolated Execution**: Executes code in a sandboxed environment. **References**: * [Ethereum Yellow Paper](https://ethereum.github.io/yellowpaper/paper.pdf): The authoritative technical document that defines the EVM and its operational mechanisms. ### Learning Resources #### Tutorials and Guides * **EVM Playground**: An interactive platform for experimenting with EVM opcodes and bytecode. It provides detailed explanations and visualizations of how EVM executes opcodes. * **Accessing Constant Variables**: Learn how to define and use constant variables in EVM. [Link](https://evm.codes/playground?lesson=1) * **Function Parameters from Calldata**: Understand how to access function parameters using calldata. [Link](https://evm.codes/playground?lesson=2) * **Testing Macros in EVM.codes**: Build and test functions using raw EVM bytecode. [Link](https://evm.codes/playground?lesson=3) * **General EVM Playground**: [Link](https://evm.codes) **EVM Cheatsheet**: A comprehensive guide detailing EVM architecture, functionalities, and operational mechanisms. It covers: * EVM Architecture: Stack, memory, storage, and instruction set. * Bytecode and Opcodes: Detailed explanations of EVM bytecode and commonly used opcodes. * Memory vs. Storage: Differences and use cases. * Gas and Gas Management: Understanding gas costs and optimization techniques. * **Link**: [EVM Cheatsheet](https://github.com/pylaugh/evm-cheatsheet) #### Academic Research * **Smart Contract Decompilation**: Learn how to decompile EVM bytecode back into high-level languages like Solidity. Tools like Mythril, Ethersplay, or Porosity are used for this purpose. * **Mythril**: [Link](https://github.com/ConsenSys/mythril) * **Ethersplay**: [Link](https://github.com/ConsenSys/ethersplay) * **Porosity**: [Link](https://github.com/gnidan/porosity) * **EVM Execution Model**: Explore how EVM executes opcodes, manages memory and storage, and handles transactions. * **Link**: [Ethereum Yellow Paper](https://ethereum.github.io/yellowpaper/paper.pdf) ### Tools for EVM Development * **EVM From Scratch**: A project that guides you through implementing your own EVM in various programming languages. It helps in understanding the core mechanics of EVM. * **Link**: [EVM From Scratch](https://github.com/w1nt3r-eth/evm-from-scratch) * **EVM Puzzles**: A collection of interactive puzzles designed to help you practice and understand EVM operations. * **Link**: [EVM Puzzles](https://github.com/fvictorio/evm-puzzles) ### Community and Discussion * **EVM Learning Manual**: A curated list of resources for learning EVM, maintained by the blockchain community. * **Link**: [EVM Learning Manual](https://learnblockchain.cn/article/4800) * **Stack Overflow**: A platform where you can find answers to common EVM-related questions and participate in discussions. * **Link**: [Stack Overflow - EVM Tag](https://stackoverflow.com/questions/tagged/evm) ### Practical Examples and Use Cases * **Contract Address Generation**: Learn how contract addresses are generated using sender address and nonce. * **Link**: [Contract Address Generation](https://ethereum.stackexchange.com/questions/760/how-is-the-address-of-an-ethereum-contract-computed) * **Bytecode Decompilation**: Understand the process of converting bytecode into opcodes and reconstructing high-level code. * **Link**: [Mythril Documentation](https://mythril.readthedocs.io/en/latest/) * **Storage Management**: Explore how EVM handles storage variables, including writing to and reading from storage slots. * **Link**: [Solidity Documentation - Storage](https://docs.soliditylang.org/en/v0.8.17/internals/layout_in_storage.html) ### References * **EVM Playground**: * **EVM Cheatsheet**: * **EVM From Scratch**: * **EVM Puzzles**: * **EVM Learning Manual**: * **Stack Overflow - EVM Tag**: * **Contract Address Generation**: * **Mythril Documentation**: * **Solidity Documentation - Storage**: --- # Agent Instructions This documentation is published with GitBook. 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