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-rw-r--r--core/vm/opcodes.go555
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diff --git a/core/vm/opcodes.go b/core/vm/opcodes.go
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--- /dev/null
+++ b/core/vm/opcodes.go
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+// 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 <http://www.gnu.org/licenses/>.
+
+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
+ EMC = 0x5c
+ BALANCEMC = 0x5d
+)
+
+// 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
+ CALLEX = 0xf6
+ STATICCALL = 0xfa
+
+ REVERT = 0xfd
+ SELFDESTRUCT = 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",
+ BALANCEMC: "BALANCEMC",
+ 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",
+ EMC: "EMC",
+
+ // 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",
+ CALLEX: "CALLEX",
+ 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,
+ "BALANCEMC": BALANCEMC,
+ "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,
+ "EMC": EMC,
+ "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,
+ "CALLEX": CALLEX,
+ "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]
+}
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