github.com/codysnider/go-ethereum@v1.10.18-0.20220420071915-14f4ae99222a/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 42 SstoreSetGas uint64 = 20000 // Once per SSTORE operation. 43 SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. 44 SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. 45 SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. 46 47 NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. 48 NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. 49 NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. 50 NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. 51 52 NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 53 NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value 54 NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value 55 56 SstoreSentryGasEIP2200 uint64 = 2300 // Minimum gas required to be present for an SSTORE call, not consumed 57 SstoreSetGasEIP2200 uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero 58 SstoreResetGasEIP2200 uint64 = 5000 // Once per SSTORE operation from clean non-zero to something else 59 SstoreClearsScheduleRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 60 61 ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST 62 ColdSloadCostEIP2929 = uint64(2100) // COLD_SLOAD_COST 63 WarmStorageReadCostEIP2929 = uint64(100) // WARM_STORAGE_READ_COST 64 65 // In EIP-2200: SstoreResetGas was 5000. 66 // In EIP-2929: SstoreResetGas was changed to '5000 - COLD_SLOAD_COST'. 67 // In EIP-3529: SSTORE_CLEARS_SCHEDULE is defined as SSTORE_RESET_GAS + ACCESS_LIST_STORAGE_KEY_COST 68 // Which becomes: 5000 - 2100 + 1900 = 4800 69 SstoreClearsScheduleRefundEIP3529 uint64 = SstoreResetGasEIP2200 - ColdSloadCostEIP2929 + TxAccessListStorageKeyGas 70 71 JumpdestGas uint64 = 1 // Once per JUMPDEST operation. 72 EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. 73 74 CreateDataGas uint64 = 200 // 75 CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. 76 ExpGas uint64 = 10 // Once per EXP instruction 77 LogGas uint64 = 375 // Per LOG* operation. 78 CopyGas uint64 = 3 // 79 StackLimit uint64 = 1024 // Maximum size of VM stack allowed. 80 TierStepGas uint64 = 0 // Once per operation, for a selection of them. 81 LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. 82 CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. 83 Create2Gas uint64 = 32000 // Once per CREATE2 operation 84 SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation. 85 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. 86 87 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. 88 TxDataNonZeroGasEIP2028 uint64 = 16 // Per byte of non zero data attached to a transaction after EIP 2028 (part in Istanbul) 89 TxAccessListAddressGas uint64 = 2400 // Per address specified in EIP 2930 access list 90 TxAccessListStorageKeyGas uint64 = 1900 // Per storage key specified in EIP 2930 access list 91 92 // These have been changed during the course of the chain 93 CallGasFrontier uint64 = 40 // Once per CALL operation & message call transaction. 94 CallGasEIP150 uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (Tangerine) 95 BalanceGasFrontier uint64 = 20 // The cost of a BALANCE operation 96 BalanceGasEIP150 uint64 = 400 // The cost of a BALANCE operation after Tangerine 97 BalanceGasEIP1884 uint64 = 700 // The cost of a BALANCE operation after EIP 1884 (part of Istanbul) 98 ExtcodeSizeGasFrontier uint64 = 20 // Cost of EXTCODESIZE before EIP 150 (Tangerine) 99 ExtcodeSizeGasEIP150 uint64 = 700 // Cost of EXTCODESIZE after EIP 150 (Tangerine) 100 SloadGasFrontier uint64 = 50 101 SloadGasEIP150 uint64 = 200 102 SloadGasEIP1884 uint64 = 800 // Cost of SLOAD after EIP 1884 (part of Istanbul) 103 SloadGasEIP2200 uint64 = 800 // Cost of SLOAD after EIP 2200 (part of Istanbul) 104 ExtcodeHashGasConstantinople uint64 = 400 // Cost of EXTCODEHASH (introduced in Constantinople) 105 ExtcodeHashGasEIP1884 uint64 = 700 // Cost of EXTCODEHASH after EIP 1884 (part in Istanbul) 106 SelfdestructGasEIP150 uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine) 107 108 // EXP has a dynamic portion depending on the size of the exponent 109 ExpByteFrontier uint64 = 10 // was set to 10 in Frontier 110 ExpByteEIP158 uint64 = 50 // was raised to 50 during Eip158 (Spurious Dragon) 111 112 // Extcodecopy has a dynamic AND a static cost. This represents only the 113 // static portion of the gas. It was changed during EIP 150 (Tangerine) 114 ExtcodeCopyBaseFrontier uint64 = 20 115 ExtcodeCopyBaseEIP150 uint64 = 700 116 117 // CreateBySelfdestructGas is used when the refunded account is one that does 118 // not exist. This logic is similar to call. 119 // Introduced in Tangerine Whistle (Eip 150) 120 CreateBySelfdestructGas uint64 = 25000 121 122 BaseFeeChangeDenominator = 8 // Bounds the amount the base fee can change between blocks. 123 ElasticityMultiplier = 2 // Bounds the maximum gas limit an EIP-1559 block may have. 124 InitialBaseFee = 1000000000 // Initial base fee for EIP-1559 blocks. 125 126 MaxCodeSize = 24576 // Maximum bytecode to permit for a contract 127 128 // Precompiled contract gas prices 129 130 EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price 131 Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation 132 Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation 133 Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation 134 Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation 135 IdentityBaseGas uint64 = 15 // Base price for a data copy operation 136 IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation 137 138 Bn256AddGasByzantium uint64 = 500 // Byzantium gas needed for an elliptic curve addition 139 Bn256AddGasIstanbul uint64 = 150 // Gas needed for an elliptic curve addition 140 Bn256ScalarMulGasByzantium uint64 = 40000 // Byzantium gas needed for an elliptic curve scalar multiplication 141 Bn256ScalarMulGasIstanbul uint64 = 6000 // Gas needed for an elliptic curve scalar multiplication 142 Bn256PairingBaseGasByzantium uint64 = 100000 // Byzantium base price for an elliptic curve pairing check 143 Bn256PairingBaseGasIstanbul uint64 = 45000 // Base price for an elliptic curve pairing check 144 Bn256PairingPerPointGasByzantium uint64 = 80000 // Byzantium per-point price for an elliptic curve pairing check 145 Bn256PairingPerPointGasIstanbul uint64 = 34000 // Per-point price for an elliptic curve pairing check 146 147 Bls12381G1AddGas uint64 = 600 // Price for BLS12-381 elliptic curve G1 point addition 148 Bls12381G1MulGas uint64 = 12000 // Price for BLS12-381 elliptic curve G1 point scalar multiplication 149 Bls12381G2AddGas uint64 = 4500 // Price for BLS12-381 elliptic curve G2 point addition 150 Bls12381G2MulGas uint64 = 55000 // Price for BLS12-381 elliptic curve G2 point scalar multiplication 151 Bls12381PairingBaseGas uint64 = 115000 // Base gas price for BLS12-381 elliptic curve pairing check 152 Bls12381PairingPerPairGas uint64 = 23000 // Per-point pair gas price for BLS12-381 elliptic curve pairing check 153 Bls12381MapG1Gas uint64 = 5500 // Gas price for BLS12-381 mapping field element to G1 operation 154 Bls12381MapG2Gas uint64 = 110000 // Gas price for BLS12-381 mapping field element to G2 operation 155 156 // The Refund Quotient is the cap on how much of the used gas can be refunded. Before EIP-3529, 157 // up to half the consumed gas could be refunded. Redefined as 1/5th in EIP-3529 158 RefundQuotient uint64 = 2 159 RefundQuotientEIP3529 uint64 = 5 160 ) 161 162 // Gas discount table for BLS12-381 G1 and G2 multi exponentiation operations 163 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} 164 165 var ( 166 DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations. 167 GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block. 168 MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be. 169 DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not. 170 )