// Copyright 2014 The go-ethereum Authors // This file is part of the go-ethereum library. // // The go-ethereum library is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // The go-ethereum library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . package vm import ( "fmt" ) // OpCode is an EVM opcode type OpCode byte // IsPush specifies if an opcode is a PUSH opcode. func (op OpCode) IsPush() bool { switch op { case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32: return true } return false } // IsStaticJump specifies if an opcode is JUMP. func (op OpCode) IsStaticJump() bool { return op == JUMP } // 0x0 range - arithmetic ops. const ( STOP OpCode = iota ADD MUL SUB DIV SDIV MOD SMOD ADDMOD MULMOD EXP SIGNEXTEND ) // 0x10 range - comparison ops. const ( LT OpCode = iota + 0x10 GT SLT SGT EQ ISZERO AND OR XOR NOT BYTE SHL SHR SAR SHA3 = 0x20 ) // 0x30 range - closure state. const ( ADDRESS OpCode = 0x30 + iota BALANCE ORIGIN CALLER CALLVALUE CALLDATALOAD CALLDATASIZE CALLDATACOPY CODESIZE CODECOPY GASPRICE EXTCODESIZE EXTCODECOPY RETURNDATASIZE RETURNDATACOPY EXTCODEHASH ) // 0x40 range - block operations. const ( BLOCKHASH OpCode = 0x40 + iota COINBASE TIMESTAMP NUMBER DIFFICULTY GASLIMIT CHAINID = 0x46 SELFBALANCE = 0x47 ) // 0x50 range - 'storage' and execution. const ( POP OpCode = 0x50 + iota MLOAD MSTORE MSTORE8 SLOAD SSTORE JUMP JUMPI PC MSIZE GAS JUMPDEST ) // 0x60 range. const ( PUSH1 OpCode = 0x60 + iota PUSH2 PUSH3 PUSH4 PUSH5 PUSH6 PUSH7 PUSH8 PUSH9 PUSH10 PUSH11 PUSH12 PUSH13 PUSH14 PUSH15 PUSH16 PUSH17 PUSH18 PUSH19 PUSH20 PUSH21 PUSH22 PUSH23 PUSH24 PUSH25 PUSH26 PUSH27 PUSH28 PUSH29 PUSH30 PUSH31 PUSH32 DUP1 DUP2 DUP3 DUP4 DUP5 DUP6 DUP7 DUP8 DUP9 DUP10 DUP11 DUP12 DUP13 DUP14 DUP15 DUP16 SWAP1 SWAP2 SWAP3 SWAP4 SWAP5 SWAP6 SWAP7 SWAP8 SWAP9 SWAP10 SWAP11 SWAP12 SWAP13 SWAP14 SWAP15 SWAP16 ) // 0xa0 range - logging ops. const ( LOG0 OpCode = 0xa0 + iota LOG1 LOG2 LOG3 LOG4 ) // unofficial opcodes used for parsing. const ( PUSH OpCode = 0xb0 + iota DUP SWAP ) // 0xf0 range - closures. const ( CREATE OpCode = 0xf0 + iota CALL CALLCODE RETURN DELEGATECALL CREATE2 STATICCALL = 0xfa REVERT = 0xfd SELFDESTRUCT OpCode = 0xff ) // Since the opcodes aren't all in order we can't use a regular slice. var opCodeToString = map[OpCode]string{ // 0x0 range - arithmetic ops. STOP: "STOP", ADD: "ADD", MUL: "MUL", SUB: "SUB", DIV: "DIV", SDIV: "SDIV", MOD: "MOD", SMOD: "SMOD", EXP: "EXP", NOT: "NOT", LT: "LT", GT: "GT", SLT: "SLT", SGT: "SGT", EQ: "EQ", ISZERO: "ISZERO", SIGNEXTEND: "SIGNEXTEND", // 0x10 range - bit ops. AND: "AND", OR: "OR", XOR: "XOR", BYTE: "BYTE", SHL: "SHL", SHR: "SHR", SAR: "SAR", ADDMOD: "ADDMOD", MULMOD: "MULMOD", // 0x20 range - crypto. SHA3: "SHA3", // 0x30 range - closure state. ADDRESS: "ADDRESS", BALANCE: "BALANCE", ORIGIN: "ORIGIN", CALLER: "CALLER", CALLVALUE: "CALLVALUE", CALLDATALOAD: "CALLDATALOAD", CALLDATASIZE: "CALLDATASIZE", CALLDATACOPY: "CALLDATACOPY", CODESIZE: "CODESIZE", CODECOPY: "CODECOPY", GASPRICE: "GASPRICE", EXTCODESIZE: "EXTCODESIZE", EXTCODECOPY: "EXTCODECOPY", RETURNDATASIZE: "RETURNDATASIZE", RETURNDATACOPY: "RETURNDATACOPY", EXTCODEHASH: "EXTCODEHASH", // 0x40 range - block operations. BLOCKHASH: "BLOCKHASH", COINBASE: "COINBASE", TIMESTAMP: "TIMESTAMP", NUMBER: "NUMBER", DIFFICULTY: "DIFFICULTY", GASLIMIT: "GASLIMIT", CHAINID: "CHAINID", SELFBALANCE: "SELFBALANCE", // 0x50 range - 'storage' and execution. POP: "POP", //DUP: "DUP", //SWAP: "SWAP", MLOAD: "MLOAD", MSTORE: "MSTORE", MSTORE8: "MSTORE8", SLOAD: "SLOAD", SSTORE: "SSTORE", JUMP: "JUMP", JUMPI: "JUMPI", PC: "PC", MSIZE: "MSIZE", GAS: "GAS", JUMPDEST: "JUMPDEST", // 0x60 range - push. PUSH1: "PUSH1", PUSH2: "PUSH2", PUSH3: "PUSH3", PUSH4: "PUSH4", PUSH5: "PUSH5", PUSH6: "PUSH6", PUSH7: "PUSH7", PUSH8: "PUSH8", PUSH9: "PUSH9", PUSH10: "PUSH10", PUSH11: "PUSH11", PUSH12: "PUSH12", PUSH13: "PUSH13", PUSH14: "PUSH14", PUSH15: "PUSH15", PUSH16: "PUSH16", PUSH17: "PUSH17", PUSH18: "PUSH18", PUSH19: "PUSH19", PUSH20: "PUSH20", PUSH21: "PUSH21", PUSH22: "PUSH22", PUSH23: "PUSH23", PUSH24: "PUSH24", PUSH25: "PUSH25", PUSH26: "PUSH26", PUSH27: "PUSH27", PUSH28: "PUSH28", PUSH29: "PUSH29", PUSH30: "PUSH30", PUSH31: "PUSH31", PUSH32: "PUSH32", DUP1: "DUP1", DUP2: "DUP2", DUP3: "DUP3", DUP4: "DUP4", DUP5: "DUP5", DUP6: "DUP6", DUP7: "DUP7", DUP8: "DUP8", DUP9: "DUP9", DUP10: "DUP10", DUP11: "DUP11", DUP12: "DUP12", DUP13: "DUP13", DUP14: "DUP14", DUP15: "DUP15", DUP16: "DUP16", SWAP1: "SWAP1", SWAP2: "SWAP2", SWAP3: "SWAP3", SWAP4: "SWAP4", SWAP5: "SWAP5", SWAP6: "SWAP6", SWAP7: "SWAP7", SWAP8: "SWAP8", SWAP9: "SWAP9", SWAP10: "SWAP10", SWAP11: "SWAP11", SWAP12: "SWAP12", SWAP13: "SWAP13", SWAP14: "SWAP14", SWAP15: "SWAP15", SWAP16: "SWAP16", LOG0: "LOG0", LOG1: "LOG1", LOG2: "LOG2", LOG3: "LOG3", LOG4: "LOG4", // 0xf0 range. CREATE: "CREATE", CALL: "CALL", RETURN: "RETURN", CALLCODE: "CALLCODE", DELEGATECALL: "DELEGATECALL", CREATE2: "CREATE2", STATICCALL: "STATICCALL", REVERT: "REVERT", SELFDESTRUCT: "SELFDESTRUCT", PUSH: "PUSH", DUP: "DUP", SWAP: "SWAP", } func (op OpCode) String() string { str := opCodeToString[op] if len(str) == 0 { return fmt.Sprintf("Missing opcode 0x%x", int(op)) } return str } var stringToOp = map[string]OpCode{ "STOP": STOP, "ADD": ADD, "MUL": MUL, "SUB": SUB, "DIV": DIV, "SDIV": SDIV, "MOD": MOD, "SMOD": SMOD, "EXP": EXP, "NOT": NOT, "LT": LT, "GT": GT, "SLT": SLT, "SGT": SGT, "EQ": EQ, "ISZERO": ISZERO, "SIGNEXTEND": SIGNEXTEND, "AND": AND, "OR": OR, "XOR": XOR, "BYTE": BYTE, "SHL": SHL, "SHR": SHR, "SAR": SAR, "ADDMOD": ADDMOD, "MULMOD": MULMOD, "SHA3": SHA3, "ADDRESS": ADDRESS, "BALANCE": BALANCE, "ORIGIN": ORIGIN, "CALLER": CALLER, "CALLVALUE": CALLVALUE, "CALLDATALOAD": CALLDATALOAD, "CALLDATASIZE": CALLDATASIZE, "CALLDATACOPY": CALLDATACOPY, "CHAINID": CHAINID, "DELEGATECALL": DELEGATECALL, "STATICCALL": STATICCALL, "CODESIZE": CODESIZE, "CODECOPY": CODECOPY, "GASPRICE": GASPRICE, "EXTCODESIZE": EXTCODESIZE, "EXTCODECOPY": EXTCODECOPY, "RETURNDATASIZE": RETURNDATASIZE, "RETURNDATACOPY": RETURNDATACOPY, "EXTCODEHASH": EXTCODEHASH, "BLOCKHASH": BLOCKHASH, "COINBASE": COINBASE, "TIMESTAMP": TIMESTAMP, "NUMBER": NUMBER, "DIFFICULTY": DIFFICULTY, "GASLIMIT": GASLIMIT, "SELFBALANCE": SELFBALANCE, "POP": POP, "MLOAD": MLOAD, "MSTORE": MSTORE, "MSTORE8": MSTORE8, "SLOAD": SLOAD, "SSTORE": SSTORE, "JUMP": JUMP, "JUMPI": JUMPI, "PC": PC, "MSIZE": MSIZE, "GAS": GAS, "JUMPDEST": JUMPDEST, "PUSH1": PUSH1, "PUSH2": PUSH2, "PUSH3": PUSH3, "PUSH4": PUSH4, "PUSH5": PUSH5, "PUSH6": PUSH6, "PUSH7": PUSH7, "PUSH8": PUSH8, "PUSH9": PUSH9, "PUSH10": PUSH10, "PUSH11": PUSH11, "PUSH12": PUSH12, "PUSH13": PUSH13, "PUSH14": PUSH14, "PUSH15": PUSH15, "PUSH16": PUSH16, "PUSH17": PUSH17, "PUSH18": PUSH18, "PUSH19": PUSH19, "PUSH20": PUSH20, "PUSH21": PUSH21, "PUSH22": PUSH22, "PUSH23": PUSH23, "PUSH24": PUSH24, "PUSH25": PUSH25, "PUSH26": PUSH26, "PUSH27": PUSH27, "PUSH28": PUSH28, "PUSH29": PUSH29, "PUSH30": PUSH30, "PUSH31": PUSH31, "PUSH32": PUSH32, "DUP1": DUP1, "DUP2": DUP2, "DUP3": DUP3, "DUP4": DUP4, "DUP5": DUP5, "DUP6": DUP6, "DUP7": DUP7, "DUP8": DUP8, "DUP9": DUP9, "DUP10": DUP10, "DUP11": DUP11, "DUP12": DUP12, "DUP13": DUP13, "DUP14": DUP14, "DUP15": DUP15, "DUP16": DUP16, "SWAP1": SWAP1, "SWAP2": SWAP2, "SWAP3": SWAP3, "SWAP4": SWAP4, "SWAP5": SWAP5, "SWAP6": SWAP6, "SWAP7": SWAP7, "SWAP8": SWAP8, "SWAP9": SWAP9, "SWAP10": SWAP10, "SWAP11": SWAP11, "SWAP12": SWAP12, "SWAP13": SWAP13, "SWAP14": SWAP14, "SWAP15": SWAP15, "SWAP16": SWAP16, "LOG0": LOG0, "LOG1": LOG1, "LOG2": LOG2, "LOG3": LOG3, "LOG4": LOG4, "CREATE": CREATE, "CREATE2": CREATE2, "CALL": CALL, "RETURN": RETURN, "CALLCODE": CALLCODE, "REVERT": REVERT, "SELFDESTRUCT": SELFDESTRUCT, } // StringToOp finds the opcode whose name is stored in `str`. func StringToOp(str string) OpCode { return stringToOp[str] }