github.com/SmartMeshFoundation/Spectrum@v0.0.0-20220621030607-452a266fee1e/params/protocol_params.go (about) 1 // Copyright 2015 The Spectrum Authors 2 // This file is part of the Spectrum library. 3 // 4 // The Spectrum 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 Spectrum 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 Spectrum library. If not, see <http://www.gnu.org/licenses/>. 16 17 package params 18 19 import "math/big" 20 21 const ( 22 MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis. 23 ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction. 24 SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added. 25 CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero. 26 CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior. 27 TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. 28 TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. 29 TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. 30 QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation. 31 SstoreSetGas uint64 = 20000 // Once per SLOAD operation. 32 LogDataGas uint64 = 8 // Per byte in a LOG* operation's data. 33 CallStipend uint64 = 2300 // Free gas given at beginning of call. 34 35 Sha3Gas uint64 = 30 // Once per SHA3 operation. 36 Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data. 37 SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. 38 SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. 39 SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. 40 JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero. 41 EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. 42 CallGas uint64 = 40 // Once per CALL operation & message call transaction. 43 CreateDataGas uint64 = 200 // 44 CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. 45 ExpGas uint64 = 10 // Once per EXP instruction 46 LogGas uint64 = 375 // Per LOG* operation. 47 CopyGas uint64 = 3 // 48 StackLimit uint64 = 1024 // Maximum size of VM stack allowed. 49 TierStepGas uint64 = 0 // Once per operation, for a selection of them. 50 LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. 51 CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. 52 SuicideRefundGas uint64 = 24000 // Refunded following a suicide operation. 53 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. 54 TxDataNonZeroGas 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. 55 56 BalanceGasFrontier uint64 = 20 // The cost of a BALANCE operation 57 ExtcodeSizeGasFrontier uint64 = 20 // Cost of EXTCODESIZE before EIP 150 (Tangerine) 58 ExtcodeCopyBaseFrontier uint64 = 20 59 SloadGasFrontier uint64 = 50 60 CallGasFrontier uint64 = 40 // Once per CALL operation & message call transaction. 61 CallGasEIP150 uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (Tangerine) 62 63 BalanceGasEIP150 uint64 = 400 // The cost of a BALANCE operation after Tangerine 64 ExtcodeSizeGasEIP150 uint64 = 700 // Cost of EXTCODESIZE after EIP 150 (Tangerine) 65 SloadGasEIP150 uint64 = 200 66 ExtcodeCopyBaseEIP150 uint64 = 700 67 68 SstoreSentryGasEIP2200 uint64 = 2300 // Minimum gas required to be present for an SSTORE call, not consumed 69 SstoreSetGasEIP2200 uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero 70 SstoreResetGasEIP2200 uint64 = 5000 // Once per SSTORE operation from clean non-zero to something else 71 SstoreClearsScheduleRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 72 73 NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot 74 NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value 75 NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value 76 77 NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. 78 NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. 79 NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. 80 NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. 81 SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation. 82 CreateBySelfdestructGas uint64 = 25000 83 SelfdestructGasEIP150 uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine) 84 // EXP has a dynamic portion depending on the size of the exponent 85 ExpByteFrontier uint64 = 10 // was set to 10 in Frontier 86 ExpByteEIP158 uint64 = 50 // was raised to 50 during Eip158 (Spurious Dragon) 87 88 SloadGasEIP2200 uint64 = 800 // Cost of SLOAD after EIP 2200 (part of Istanbul) 89 90 MaxCodeSize = 24576 // Maximum bytecode to permit for a contract 91 92 // Precompiled contract gas prices 93 94 EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price 95 Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation 96 Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation 97 Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation 98 Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation 99 IdentityBaseGas uint64 = 15 // Base price for a data copy operation 100 IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation 101 ModExpQuadCoeffDiv uint64 = 20 // Divisor for the quadratic particle of the big int modular exponentiation 102 Bn256AddGas uint64 = 500 // Gas needed for an elliptic curve addition 103 Bn256ScalarMulGas uint64 = 40000 // Gas needed for an elliptic curve scalar multiplication 104 Bn256PairingBaseGas uint64 = 100000 // Base price for an elliptic curve pairing check 105 Bn256PairingPerPointGas uint64 = 80000 // Per-point price for an elliptic curve pairing check 106 107 ExtcodeHashGasConstantinople uint64 = 400 // Cost of EXTCODEHASH (introduced in Constantinople) 108 Create2Gas uint64 = 32000 // Once per CREATE2 operation 109 ) 110 111 var ( 112 GasLimitBoundDivisor = big.NewInt(1024) // The bound divisor of the gas limit, used in update calculations. 113 MinGasLimit = big.NewInt(5000) // Minimum the gas limit may ever be. 114 GenesisGasLimit = big.NewInt(4712388) // Gas limit of the Genesis block. 115 TargetGasLimit = new(big.Int).Set(GenesisGasLimit) // The artificial target 116 DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations. 117 GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block. 118 MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be. 119 DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not. 120 Sip004GasLimit = big.NewInt(40000000) // Minimum gas limit after hardfork 121 )