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go-ethereum/core/vm/jump_table.go

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// Copyright 2015 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 (
"math/big"
"github.com/ethereum/go-ethereum/params"
)
type (
executionFunc func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error)
gasFunc func(params.GasTable, *EVM, *Contract, *Stack, *Memory, *big.Int) *big.Int
stackValidationFunc func(*Stack) error
memorySizeFunc func(*Stack) *big.Int
)
type operation struct {
// op is the operation function
execute executionFunc
// gasCost is the gas function and returns the gas required for execution
gasCost gasFunc
// validateStack validates the stack (size) for the operation
validateStack stackValidationFunc
// memorySize returns the memory size required for the operation
memorySize memorySizeFunc
// halts indicates whether the operation shoult halt further execution
// and return
halts bool
// jumps indicates whether operation made a jump. This prevents the program
// counter from further incrementing.
jumps bool
// valid is used to check whether the retrieved operation is valid and known
valid bool
}
var defaultJumpTable = NewJumpTable()
func NewJumpTable() [256]operation {
return [256]operation{
ADD: operation{
execute: opAdd,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
SUB: operation{
execute: opSub,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
MUL: operation{
execute: opMul,
gasCost: constGasFunc(GasFastStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
DIV: operation{
execute: opDiv,
gasCost: constGasFunc(GasFastStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
SDIV: operation{
execute: opSdiv,
gasCost: constGasFunc(GasFastStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
MOD: operation{
execute: opMod,
gasCost: constGasFunc(GasFastStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
SMOD: operation{
execute: opSmod,
gasCost: constGasFunc(GasFastStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
EXP: operation{
execute: opExp,
gasCost: gasExp,
validateStack: makeStackFunc(2, 1),
valid: true,
},
SIGNEXTEND: operation{
execute: opSignExtend,
gasCost: constGasFunc(GasFastStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
NOT: operation{
execute: opNot,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(1, 1),
valid: true,
},
LT: operation{
execute: opLt,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
GT: operation{
execute: opGt,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
SLT: operation{
execute: opSlt,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
SGT: operation{
execute: opSgt,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
EQ: operation{
execute: opEq,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
ISZERO: operation{
execute: opIszero,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(1, 1),
valid: true,
},
AND: operation{
execute: opAnd,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
OR: operation{
execute: opOr,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
XOR: operation{
execute: opXor,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
BYTE: operation{
execute: opByte,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(2, 1),
valid: true,
},
ADDMOD: operation{
execute: opAddmod,
gasCost: constGasFunc(GasMidStep),
validateStack: makeStackFunc(3, 1),
valid: true,
},
MULMOD: operation{
execute: opMulmod,
gasCost: constGasFunc(GasMidStep),
validateStack: makeStackFunc(3, 1),
valid: true,
},
SHA3: operation{
execute: opSha3,
gasCost: gasSha3,
validateStack: makeStackFunc(2, 1),
memorySize: memorySha3,
valid: true,
},
ADDRESS: operation{
execute: opAddress,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
BALANCE: operation{
execute: opBalance,
gasCost: gasBalance,
validateStack: makeStackFunc(0, 1),
valid: true,
},
ORIGIN: operation{
execute: opOrigin,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
CALLER: operation{
execute: opCaller,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
CALLVALUE: operation{
execute: opCallValue,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
CALLDATALOAD: operation{
execute: opCalldataLoad,
gasCost: constGasFunc(GasFastestStep),
validateStack: makeStackFunc(1, 1),
valid: true,
},
CALLDATASIZE: operation{
execute: opCalldataSize,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
CALLDATACOPY: operation{
execute: opCalldataCopy,
gasCost: gasCalldataCopy,
validateStack: makeStackFunc(3, 1),
memorySize: memoryCalldataCopy,
valid: true,
},
CODESIZE: operation{
execute: opCodeSize,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
EXTCODESIZE: operation{
execute: opExtCodeSize,
gasCost: gasExtCodeSize,
validateStack: makeStackFunc(1, 1),
valid: true,
},
CODECOPY: operation{
execute: opCodeCopy,
gasCost: gasCodeCopy,
validateStack: makeStackFunc(3, 0),
memorySize: memoryCodeCopy,
valid: true,
},
EXTCODECOPY: operation{
execute: opExtCodeCopy,
gasCost: gasExtCodeCopy,
validateStack: makeStackFunc(4, 0),
memorySize: memoryExtCodeCopy,
valid: true,
},
GASPRICE: operation{
execute: opGasprice,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
BLOCKHASH: operation{
execute: opBlockhash,
gasCost: constGasFunc(GasExtStep),
validateStack: makeStackFunc(1, 1),
valid: true,
},
COINBASE: operation{
execute: opCoinbase,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
TIMESTAMP: operation{
execute: opTimestamp,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
NUMBER: operation{
execute: opNumber,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
DIFFICULTY: operation{
execute: opDifficulty,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
GASLIMIT: operation{
execute: opGasLimit,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
POP: operation{
execute: opPop,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(1, 0),
valid: true,
},
MLOAD: operation{
execute: opMload,
gasCost: gasMLoad,
validateStack: makeStackFunc(1, 1),
memorySize: memoryMLoad,
valid: true,
},
MSTORE: operation{
execute: opMstore,
gasCost: gasMStore,
validateStack: makeStackFunc(2, 0),
memorySize: memoryMStore,
valid: true,
},
MSTORE8: operation{
execute: opMstore8,
gasCost: gasMStore8,
memorySize: memoryMStore8,
validateStack: makeStackFunc(2, 0),
valid: true,
},
SLOAD: operation{
execute: opSload,
gasCost: gasSLoad,
validateStack: makeStackFunc(1, 1),
valid: true,
},
SSTORE: operation{
execute: opSstore,
gasCost: gasSStore,
validateStack: makeStackFunc(2, 0),
valid: true,
},
JUMPDEST: operation{
execute: opJumpdest,
gasCost: constGasFunc(params.JumpdestGas),
validateStack: makeStackFunc(0, 0),
valid: true,
},
PC: operation{
execute: opPc,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
MSIZE: operation{
execute: opMsize,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
GAS: operation{
execute: opGas,
gasCost: constGasFunc(GasQuickStep),
validateStack: makeStackFunc(0, 1),
valid: true,
},
CREATE: operation{
execute: opCreate,
gasCost: gasCreate,
validateStack: makeStackFunc(3, 1),
memorySize: memoryCreate,
valid: true,
},
CALL: operation{
execute: opCall,
gasCost: gasCall,
validateStack: makeStackFunc(7, 1),
memorySize: memoryCall,
valid: true,
},
CALLCODE: operation{
execute: opCallCode,
gasCost: gasCallCode,
validateStack: makeStackFunc(7, 1),
memorySize: memoryCall,
valid: true,
},
DELEGATECALL: operation{
execute: opDelegateCall,
gasCost: gasDelegateCall,
validateStack: makeStackFunc(6, 1),
memorySize: memoryDelegateCall,
valid: true,
},
RETURN: operation{
execute: opReturn,
gasCost: gasReturn,
validateStack: makeStackFunc(2, 0),
memorySize: memoryReturn,
halts: true,
valid: true,
},
SUICIDE: operation{
execute: opSuicide,
gasCost: gasSuicide,
validateStack: makeStackFunc(1, 0),
halts: true,
valid: true,
},
JUMP: operation{
execute: opJump,
gasCost: constGasFunc(GasMidStep),
validateStack: makeStackFunc(1, 0),
jumps: true,
valid: true,
},
JUMPI: operation{
execute: opJumpi,
gasCost: constGasFunc(GasSlowStep),
validateStack: makeStackFunc(2, 0),
jumps: true,
valid: true,
},
STOP: operation{
execute: opStop,
gasCost: constGasFunc(Zero),
validateStack: makeStackFunc(0, 0),
halts: true,
valid: true,
},
LOG0: operation{
execute: makeLog(0),
gasCost: makeGasLog(0),
validateStack: makeStackFunc(2, 0),
memorySize: memoryLog,
valid: true,
},
LOG1: operation{
execute: makeLog(1),
gasCost: makeGasLog(1),
validateStack: makeStackFunc(3, 0),
memorySize: memoryLog,
valid: true,
},
LOG2: operation{
execute: makeLog(2),
gasCost: makeGasLog(2),
validateStack: makeStackFunc(4, 0),
memorySize: memoryLog,
valid: true,
},
LOG3: operation{
execute: makeLog(3),
gasCost: makeGasLog(3),
validateStack: makeStackFunc(5, 0),
memorySize: memoryLog,
valid: true,
},
LOG4: operation{
execute: makeLog(4),
gasCost: makeGasLog(4),
validateStack: makeStackFunc(6, 0),
memorySize: memoryLog,
valid: true,
},
SWAP1: operation{
execute: makeSwap(1),
gasCost: gasSwap,
validateStack: makeStackFunc(2, 0),
valid: true,
},
SWAP2: operation{
execute: makeSwap(2),
gasCost: gasSwap,
validateStack: makeStackFunc(3, 0),
valid: true,
},
SWAP3: operation{
execute: makeSwap(3),
gasCost: gasSwap,
validateStack: makeStackFunc(4, 0),
valid: true,
},
SWAP4: operation{
execute: makeSwap(4),
gasCost: gasSwap,
validateStack: makeStackFunc(5, 0),
valid: true,
},
SWAP5: operation{
execute: makeSwap(5),
gasCost: gasSwap,
validateStack: makeStackFunc(6, 0),
valid: true,
},
SWAP6: operation{
execute: makeSwap(6),
gasCost: gasSwap,
validateStack: makeStackFunc(7, 0),
valid: true,
},
SWAP7: operation{
execute: makeSwap(7),
gasCost: gasSwap,
validateStack: makeStackFunc(8, 0),
valid: true,
},
SWAP8: operation{
execute: makeSwap(8),
gasCost: gasSwap,
validateStack: makeStackFunc(9, 0),
valid: true,
},
SWAP9: operation{
execute: makeSwap(9),
gasCost: gasSwap,
validateStack: makeStackFunc(10, 0),
valid: true,
},
SWAP10: operation{
execute: makeSwap(10),
gasCost: gasSwap,
validateStack: makeStackFunc(11, 0),
valid: true,
},
SWAP11: operation{
execute: makeSwap(11),
gasCost: gasSwap,
validateStack: makeStackFunc(12, 0),
valid: true,
},
SWAP12: operation{
execute: makeSwap(12),
gasCost: gasSwap,
validateStack: makeStackFunc(13, 0),
valid: true,
},
SWAP13: operation{
execute: makeSwap(13),
gasCost: gasSwap,
validateStack: makeStackFunc(14, 0),
valid: true,
},
SWAP14: operation{
execute: makeSwap(14),
gasCost: gasSwap,
validateStack: makeStackFunc(15, 0),
valid: true,
},
SWAP15: operation{
execute: makeSwap(15),
gasCost: gasSwap,
validateStack: makeStackFunc(16, 0),
valid: true,
},
SWAP16: operation{
execute: makeSwap(16),
gasCost: gasSwap,
validateStack: makeStackFunc(17, 0),
valid: true,
},
PUSH1: operation{
execute: makePush(1, big.NewInt(1)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH2: operation{
execute: makePush(2, big.NewInt(2)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH3: operation{
execute: makePush(3, big.NewInt(3)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH4: operation{
execute: makePush(4, big.NewInt(4)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH5: operation{
execute: makePush(5, big.NewInt(5)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH6: operation{
execute: makePush(6, big.NewInt(6)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH7: operation{
execute: makePush(7, big.NewInt(7)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH8: operation{
execute: makePush(8, big.NewInt(8)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH9: operation{
execute: makePush(9, big.NewInt(9)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH10: operation{
execute: makePush(10, big.NewInt(10)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH11: operation{
execute: makePush(11, big.NewInt(11)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH12: operation{
execute: makePush(12, big.NewInt(12)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH13: operation{
execute: makePush(13, big.NewInt(13)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH14: operation{
execute: makePush(14, big.NewInt(14)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH15: operation{
execute: makePush(15, big.NewInt(15)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH16: operation{
execute: makePush(16, big.NewInt(16)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH17: operation{
execute: makePush(17, big.NewInt(17)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH18: operation{
execute: makePush(18, big.NewInt(18)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH19: operation{
execute: makePush(19, big.NewInt(19)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH20: operation{
execute: makePush(20, big.NewInt(20)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH21: operation{
execute: makePush(21, big.NewInt(21)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH22: operation{
execute: makePush(22, big.NewInt(22)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH23: operation{
execute: makePush(23, big.NewInt(23)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH24: operation{
execute: makePush(24, big.NewInt(24)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH25: operation{
execute: makePush(25, big.NewInt(25)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH26: operation{
execute: makePush(26, big.NewInt(26)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH27: operation{
execute: makePush(27, big.NewInt(27)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH28: operation{
execute: makePush(28, big.NewInt(28)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH29: operation{
execute: makePush(29, big.NewInt(29)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH30: operation{
execute: makePush(30, big.NewInt(30)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH31: operation{
execute: makePush(31, big.NewInt(31)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
PUSH32: operation{
execute: makePush(32, big.NewInt(32)),
gasCost: gasPush,
validateStack: makeStackFunc(0, 1),
valid: true,
},
DUP1: operation{
execute: makeDup(1),
gasCost: gasDup,
validateStack: makeStackFunc(1, 1),
valid: true,
},
DUP2: operation{
execute: makeDup(2),
gasCost: gasDup,
validateStack: makeStackFunc(2, 1),
valid: true,
},
DUP3: operation{
execute: makeDup(3),
gasCost: gasDup,
validateStack: makeStackFunc(3, 1),
valid: true,
},
DUP4: operation{
execute: makeDup(4),
gasCost: gasDup,
validateStack: makeStackFunc(4, 1),
valid: true,
},
DUP5: operation{
execute: makeDup(5),
gasCost: gasDup,
validateStack: makeStackFunc(5, 1),
valid: true,
},
DUP6: operation{
execute: makeDup(6),
gasCost: gasDup,
validateStack: makeStackFunc(6, 1),
valid: true,
},
DUP7: operation{
execute: makeDup(7),
gasCost: gasDup,
validateStack: makeStackFunc(7, 1),
valid: true,
},
DUP8: operation{
execute: makeDup(8),
gasCost: gasDup,
validateStack: makeStackFunc(8, 1),
valid: true,
},
DUP9: operation{
execute: makeDup(9),
gasCost: gasDup,
validateStack: makeStackFunc(9, 1),
valid: true,
},
DUP10: operation{
execute: makeDup(10),
gasCost: gasDup,
validateStack: makeStackFunc(10, 1),
valid: true,
},
DUP11: operation{
execute: makeDup(11),
gasCost: gasDup,
validateStack: makeStackFunc(11, 1),
valid: true,
},
DUP12: operation{
execute: makeDup(12),
gasCost: gasDup,
validateStack: makeStackFunc(12, 1),
valid: true,
},
DUP13: operation{
execute: makeDup(13),
gasCost: gasDup,
validateStack: makeStackFunc(13, 1),
valid: true,
},
DUP14: operation{
execute: makeDup(14),
gasCost: gasDup,
validateStack: makeStackFunc(14, 1),
valid: true,
},
DUP15: operation{
execute: makeDup(15),
gasCost: gasDup,
validateStack: makeStackFunc(15, 1),
valid: true,
},
DUP16: operation{
execute: makeDup(16),
gasCost: gasDup,
validateStack: makeStackFunc(16, 1),
valid: true,
},
}
}