github.com/calmw/ethereum@v0.1.1/params/protocol_params.go (about) 1 // Copyright 2015 The go-ethereum Authors 2 // This file is part of the go-ethereum library. 3 // 4 // The go-ethereum library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-ethereum library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17 package params 18 19 import "math/big" 20 21 const ( 22 GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations. 23 MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be. 24 MaxGasLimit uint64 = 0x7fffffffffffffff // Maximum the gas limit (2^63-1). 25 GenesisGasLimit uint64 = 4712388 // Gas limit of the Genesis block. 26 27 MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis. 28 ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction. 29 SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added. 30 CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero. 31 CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior. 32 TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. 33 TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. 34 TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. 35 QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation. 36 LogDataGas uint64 = 8 // Per byte in a LOG* operation's data. 37 CallStipend uint64 = 2300 // Free gas given at beginning of call. 38 39 Keccak256Gas uint64 = 30 // Once per KECCAK256 operation. 40 Keccak256WordGas uint64 = 6 // Once per word of the KECCAK256 operation's data. 41 InitCodeWordGas uint64 = 2 // Once per word of the init code when creating a contract. 42 43 SstoreSetGas uint64 = 20000 // Once per SSTORE operation. 44 SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. 45 SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. 46 SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. 47 48 NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. 49 NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. 50 NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. 51 NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. 52 53 NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 54 NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value 55 NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value 56 57 SstoreSentryGasEIP2200 uint64 = 2300 // Minimum gas required to be present for an SSTORE call, not consumed 58 SstoreSetGasEIP2200 uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero 59 SstoreResetGasEIP2200 uint64 = 5000 // Once per SSTORE operation from clean non-zero to something else 60 SstoreClearsScheduleRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 61 62 ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST 63 ColdSloadCostEIP2929 = uint64(2100) // COLD_SLOAD_COST 64 WarmStorageReadCostEIP2929 = uint64(100) // WARM_STORAGE_READ_COST 65 66 // In EIP-2200: SstoreResetGas was 5000. 67 // In EIP-2929: SstoreResetGas was changed to '5000 - COLD_SLOAD_COST'. 68 // In EIP-3529: SSTORE_CLEARS_SCHEDULE is defined as SSTORE_RESET_GAS + ACCESS_LIST_STORAGE_KEY_COST 69 // Which becomes: 5000 - 2100 + 1900 = 4800 70 SstoreClearsScheduleRefundEIP3529 uint64 = SstoreResetGasEIP2200 - ColdSloadCostEIP2929 + TxAccessListStorageKeyGas 71 72 JumpdestGas uint64 = 1 // Once per JUMPDEST operation. 73 EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. 74 75 CreateDataGas uint64 = 200 // 76 CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. 77 ExpGas uint64 = 10 // Once per EXP instruction 78 LogGas uint64 = 375 // Per LOG* operation. 79 CopyGas uint64 = 3 // 80 StackLimit uint64 = 1024 // Maximum size of VM stack allowed. 81 TierStepGas uint64 = 0 // Once per operation, for a selection of them. 82 LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. 83 CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. 84 Create2Gas uint64 = 32000 // Once per CREATE2 operation 85 SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation. 86 MemoryGas uint64 = 3 // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL. 87 88 TxDataNonZeroGasFrontier uint64 = 68 // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions. 89 TxDataNonZeroGasEIP2028 uint64 = 16 // Per byte of non zero data attached to a transaction after EIP 2028 (part in Istanbul) 90 TxAccessListAddressGas uint64 = 2400 // Per address specified in EIP 2930 access list 91 TxAccessListStorageKeyGas uint64 = 1900 // Per storage key specified in EIP 2930 access list 92 93 // These have been changed during the course of the chain 94 CallGasFrontier uint64 = 40 // Once per CALL operation & message call transaction. 95 CallGasEIP150 uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (Tangerine) 96 BalanceGasFrontier uint64 = 20 // The cost of a BALANCE operation 97 BalanceGasEIP150 uint64 = 400 // The cost of a BALANCE operation after Tangerine 98 BalanceGasEIP1884 uint64 = 700 // The cost of a BALANCE operation after EIP 1884 (part of Istanbul) 99 ExtcodeSizeGasFrontier uint64 = 20 // Cost of EXTCODESIZE before EIP 150 (Tangerine) 100 ExtcodeSizeGasEIP150 uint64 = 700 // Cost of EXTCODESIZE after EIP 150 (Tangerine) 101 SloadGasFrontier uint64 = 50 102 SloadGasEIP150 uint64 = 200 103 SloadGasEIP1884 uint64 = 800 // Cost of SLOAD after EIP 1884 (part of Istanbul) 104 SloadGasEIP2200 uint64 = 800 // Cost of SLOAD after EIP 2200 (part of Istanbul) 105 ExtcodeHashGasConstantinople uint64 = 400 // Cost of EXTCODEHASH (introduced in Constantinople) 106 ExtcodeHashGasEIP1884 uint64 = 700 // Cost of EXTCODEHASH after EIP 1884 (part in Istanbul) 107 SelfdestructGasEIP150 uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine) 108 109 // EXP has a dynamic portion depending on the size of the exponent 110 ExpByteFrontier uint64 = 10 // was set to 10 in Frontier 111 ExpByteEIP158 uint64 = 50 // was raised to 50 during Eip158 (Spurious Dragon) 112 113 // Extcodecopy has a dynamic AND a static cost. This represents only the 114 // static portion of the gas. It was changed during EIP 150 (Tangerine) 115 ExtcodeCopyBaseFrontier uint64 = 20 116 ExtcodeCopyBaseEIP150 uint64 = 700 117 118 // CreateBySelfdestructGas is used when the refunded account is one that does 119 // not exist. This logic is similar to call. 120 // Introduced in Tangerine Whistle (Eip 150) 121 CreateBySelfdestructGas uint64 = 25000 122 123 DefaultBaseFeeChangeDenominator = 8 // Bounds the amount the base fee can change between blocks. 124 DefaultElasticityMultiplier = 2 // Bounds the maximum gas limit an EIP-1559 block may have. 125 InitialBaseFee = 1000000000 // Initial base fee for EIP-1559 blocks. 126 127 MaxCodeSize = 24576 // Maximum bytecode to permit for a contract 128 MaxInitCodeSize = 2 * MaxCodeSize // Maximum initcode to permit in a creation transaction and create instructions 129 130 // Precompiled contract gas prices 131 132 EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price 133 Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation 134 Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation 135 Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation 136 Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation 137 IdentityBaseGas uint64 = 15 // Base price for a data copy operation 138 IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation 139 140 Bn256AddGasByzantium uint64 = 500 // Byzantium gas needed for an elliptic curve addition 141 Bn256AddGasIstanbul uint64 = 150 // Gas needed for an elliptic curve addition 142 Bn256ScalarMulGasByzantium uint64 = 40000 // Byzantium gas needed for an elliptic curve scalar multiplication 143 Bn256ScalarMulGasIstanbul uint64 = 6000 // Gas needed for an elliptic curve scalar multiplication 144 Bn256PairingBaseGasByzantium uint64 = 100000 // Byzantium base price for an elliptic curve pairing check 145 Bn256PairingBaseGasIstanbul uint64 = 45000 // Base price for an elliptic curve pairing check 146 Bn256PairingPerPointGasByzantium uint64 = 80000 // Byzantium per-point price for an elliptic curve pairing check 147 Bn256PairingPerPointGasIstanbul uint64 = 34000 // Per-point price for an elliptic curve pairing check 148 149 Bls12381G1AddGas uint64 = 600 // Price for BLS12-381 elliptic curve G1 point addition 150 Bls12381G1MulGas uint64 = 12000 // Price for BLS12-381 elliptic curve G1 point scalar multiplication 151 Bls12381G2AddGas uint64 = 4500 // Price for BLS12-381 elliptic curve G2 point addition 152 Bls12381G2MulGas uint64 = 55000 // Price for BLS12-381 elliptic curve G2 point scalar multiplication 153 Bls12381PairingBaseGas uint64 = 115000 // Base gas price for BLS12-381 elliptic curve pairing check 154 Bls12381PairingPerPairGas uint64 = 23000 // Per-point pair gas price for BLS12-381 elliptic curve pairing check 155 Bls12381MapG1Gas uint64 = 5500 // Gas price for BLS12-381 mapping field element to G1 operation 156 Bls12381MapG2Gas uint64 = 110000 // Gas price for BLS12-381 mapping field element to G2 operation 157 158 // The Refund Quotient is the cap on how much of the used gas can be refunded. Before EIP-3529, 159 // up to half the consumed gas could be refunded. Redefined as 1/5th in EIP-3529 160 RefundQuotient uint64 = 2 161 RefundQuotientEIP3529 uint64 = 5 162 163 BlobTxDataGasPerBlob = 1 << 17 // Gas consumption of a single data blob (== blob byte size) 164 BlobTxMinDataGasprice = 1 // Minimum gas price for data blobs 165 BlobTxDataGaspriceUpdateFraction = 2225652 // Controls the maximum rate of change for data gas price 166 ) 167 168 // Gas discount table for BLS12-381 G1 and G2 multi exponentiation operations 169 var Bls12381MultiExpDiscountTable = [128]uint64{1200, 888, 764, 641, 594, 547, 500, 453, 438, 423, 408, 394, 379, 364, 349, 334, 330, 326, 322, 318, 314, 310, 306, 302, 298, 294, 289, 285, 281, 277, 273, 269, 268, 266, 265, 263, 262, 260, 259, 257, 256, 254, 253, 251, 250, 248, 247, 245, 244, 242, 241, 239, 238, 236, 235, 233, 232, 231, 229, 228, 226, 225, 223, 222, 221, 220, 219, 219, 218, 217, 216, 216, 215, 214, 213, 213, 212, 211, 211, 210, 209, 208, 208, 207, 206, 205, 205, 204, 203, 202, 202, 201, 200, 199, 199, 198, 197, 196, 196, 195, 194, 193, 193, 192, 191, 191, 190, 189, 188, 188, 187, 186, 185, 185, 184, 183, 182, 182, 181, 180, 179, 179, 178, 177, 176, 176, 175, 174} 170 171 var ( 172 DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations. 173 GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block. 174 MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be. 175 DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not. 176 )