diff options
Diffstat (limited to 'params/protocol_params.go')
| -rw-r--r-- | params/protocol_params.go | 121 |
1 files changed, 119 insertions, 2 deletions
diff --git a/params/protocol_params.go b/params/protocol_params.go index c738450..b36dd91 100644 --- a/params/protocol_params.go +++ b/params/protocol_params.go @@ -16,8 +16,125 @@ package params -//import "math/big" +import "math/big" const ( - MaximumExtraDataSize uint64 = 64 // Maximum size extra data may be after Genesis. + GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations. + MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be. + GenesisGasLimit uint64 = 4712388 // Gas limit of the Genesis block. + + MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis. + ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction. + SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added. + CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero. + CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior. + TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. + TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. + TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. + QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation. + LogDataGas uint64 = 8 // Per byte in a LOG* operation's data. + CallStipend uint64 = 2300 // Free gas given at beginning of call. + + Sha3Gas uint64 = 30 // Once per SHA3 operation. + Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data. + + SstoreSetGas uint64 = 20000 // Once per SLOAD operation. + SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero. + SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change. + SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero. + + NetSstoreNoopGas uint64 = 200 // Once per SSTORE operation if the value doesn't change. + NetSstoreInitGas uint64 = 20000 // Once per SSTORE operation from clean zero. + NetSstoreCleanGas uint64 = 5000 // Once per SSTORE operation from clean non-zero. + NetSstoreDirtyGas uint64 = 200 // Once per SSTORE operation from dirty. + + NetSstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot + NetSstoreResetRefund uint64 = 4800 // Once per SSTORE operation for resetting to the original non-zero value + NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value + + SstoreSentryGasEIP2200 uint64 = 2300 // Minimum gas required to be present for an SSTORE call, not consumed + SstoreNoopGasEIP2200 uint64 = 800 // Once per SSTORE operation if the value doesn't change. + SstoreDirtyGasEIP2200 uint64 = 800 // Once per SSTORE operation if a dirty value is changed. + SstoreInitGasEIP2200 uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero + SstoreInitRefundEIP2200 uint64 = 19200 // Once per SSTORE operation for resetting to the original zero value + SstoreCleanGasEIP2200 uint64 = 5000 // Once per SSTORE operation from clean non-zero to something else + SstoreCleanRefundEIP2200 uint64 = 4200 // Once per SSTORE operation for resetting to the original non-zero value + SstoreClearRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot + + JumpdestGas uint64 = 1 // Once per JUMPDEST operation. + EMCGas uint64 = 1 // Once per EMC operation. + EpochDuration uint64 = 30000 // Duration between proof-of-work epochs. + + CreateDataGas uint64 = 200 // + CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack. + ExpGas uint64 = 10 // Once per EXP instruction + LogGas uint64 = 375 // Per LOG* operation. + CopyGas uint64 = 3 // + StackLimit uint64 = 1024 // Maximum size of VM stack allowed. + TierStepGas uint64 = 0 // Once per operation, for a selection of them. + LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas. + CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction. + Create2Gas uint64 = 32000 // Once per CREATE2 operation + SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation. + 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. + 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. + TxDataNonZeroGasEIP2028 uint64 = 16 // Per byte of non zero data attached to a transaction after EIP 2028 (part in Istanbul) + + // These have been changed during the course of the chain + CallGasFrontier uint64 = 40 // Once per CALL operation & message call transaction. + CallGasEIP150 uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (Tangerine) + BalanceGasFrontier uint64 = 20 // The cost of a BALANCE operation + BalanceGasEIP150 uint64 = 400 // The cost of a BALANCE operation after Tangerine + BalanceGasEIP1884 uint64 = 700 // The cost of a BALANCE operation after EIP 1884 (part of Istanbul) + ExtcodeSizeGasFrontier uint64 = 20 // Cost of EXTCODESIZE before EIP 150 (Tangerine) + ExtcodeSizeGasEIP150 uint64 = 700 // Cost of EXTCODESIZE after EIP 150 (Tangerine) + SloadGasFrontier uint64 = 50 + SloadGasEIP150 uint64 = 200 + SloadGasEIP1884 uint64 = 800 // Cost of SLOAD after EIP 1884 (part of Istanbul) + ExtcodeHashGasConstantinople uint64 = 400 // Cost of EXTCODEHASH (introduced in Constantinople) + ExtcodeHashGasEIP1884 uint64 = 700 // Cost of EXTCODEHASH after EIP 1884 (part in Istanbul) + SelfdestructGasEIP150 uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine) + + // EXP has a dynamic portion depending on the size of the exponent + ExpByteFrontier uint64 = 10 // was set to 10 in Frontier + ExpByteEIP158 uint64 = 50 // was raised to 50 during Eip158 (Spurious Dragon) + + // Extcodecopy has a dynamic AND a static cost. This represents only the + // static portion of the gas. It was changed during EIP 150 (Tangerine) + ExtcodeCopyBaseFrontier uint64 = 20 + ExtcodeCopyBaseEIP150 uint64 = 700 + + // CreateBySelfdestructGas is used when the refunded account is one that does + // not exist. This logic is similar to call. + // Introduced in Tangerine Whistle (Eip 150) + CreateBySelfdestructGas uint64 = 25000 + + MaxCodeSize = 24576 // Maximum bytecode to permit for a contract + + // Precompiled contract gas prices + + EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price + Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation + Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation + Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation + Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation + IdentityBaseGas uint64 = 15 // Base price for a data copy operation + IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation + ModExpQuadCoeffDiv uint64 = 20 // Divisor for the quadratic particle of the big int modular exponentiation + + Bn256AddGasByzantium uint64 = 500 // Byzantium gas needed for an elliptic curve addition + Bn256AddGasIstanbul uint64 = 150 // Gas needed for an elliptic curve addition + Bn256ScalarMulGasByzantium uint64 = 40000 // Byzantium gas needed for an elliptic curve scalar multiplication + Bn256ScalarMulGasIstanbul uint64 = 6000 // Gas needed for an elliptic curve scalar multiplication + Bn256PairingBaseGasByzantium uint64 = 100000 // Byzantium base price for an elliptic curve pairing check + Bn256PairingBaseGasIstanbul uint64 = 45000 // Base price for an elliptic curve pairing check + Bn256PairingPerPointGasByzantium uint64 = 80000 // Byzantium per-point price for an elliptic curve pairing check + Bn256PairingPerPointGasIstanbul uint64 = 34000 // Per-point price for an elliptic curve pairing check +) + +var ( + DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations. + GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block. + MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be. + DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not. ) |