88 lines
5.7 KiB
Go
88 lines
5.7 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package params
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import "math/big"
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var (
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TargetGasLimit = GenesisGasLimit // The artificial target
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)
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const (
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GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations.
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MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be.
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GenesisGasLimit uint64 = 4712388 // Gas limit of the Genesis block.
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MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis.
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ExpByteGas uint64 = 10 // Times ceil(log256(exponent)) for the EXP instruction.
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SloadGas uint64 = 50 // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
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CallValueTransferGas uint64 = 9000 // Paid for CALL when the value transfer is non-zero.
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CallNewAccountGas uint64 = 25000 // Paid for CALL when the destination address didn't exist prior.
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TxGas uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
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TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
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TxDataZeroGas uint64 = 4 // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
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QuadCoeffDiv uint64 = 512 // Divisor for the quadratic particle of the memory cost equation.
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SstoreSetGas uint64 = 20000 // Once per SLOAD operation.
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LogDataGas uint64 = 8 // Per byte in a LOG* operation's data.
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CallStipend uint64 = 2300 // Free gas given at beginning of call.
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Sha3Gas uint64 = 30 // Once per SHA3 operation.
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Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data.
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SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero.
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SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change.
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SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.
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JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
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EpochDuration uint64 = 30000 // Duration between proof-of-work epochs.
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CallGas uint64 = 40 // Once per CALL operation & message call transaction.
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CreateDataGas uint64 = 200 //
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CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack.
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ExpGas uint64 = 10 // Once per EXP instruction
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LogGas uint64 = 375 // Per LOG* operation.
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CopyGas uint64 = 3 //
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StackLimit uint64 = 1024 // Maximum size of VM stack allowed.
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TierStepGas uint64 = 0 // Once per operation, for a selection of them.
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LogTopicGas uint64 = 375 // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
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CreateGas uint64 = 32000 // Once per CREATE operation & contract-creation transaction.
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SuicideRefundGas uint64 = 24000 // Refunded following a suicide operation.
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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.
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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.
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MaxCodeSize = 24576 // Maximum bytecode to permit for a contract
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// Precompiled contract gas prices
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EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price
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Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation
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Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation
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Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation
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Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation
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IdentityBaseGas uint64 = 15 // Base price for a data copy operation
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IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation
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ModExpQuadCoeffDiv uint64 = 20 // Divisor for the quadratic particle of the big int modular exponentiation
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Bn256AddGas uint64 = 500 // Gas needed for an elliptic curve addition
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Bn256ScalarMulGas uint64 = 40000 // Gas needed for an elliptic curve scalar multiplication
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Bn256PairingBaseGas uint64 = 100000 // Base price for an elliptic curve pairing check
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Bn256PairingPerPointGas uint64 = 80000 // Per-point price for an elliptic curve pairing check
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)
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var (
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DifficultyBoundDivisor = big.NewInt(2048) // The bound divisor of the difficulty, used in the update calculations.
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GenesisDifficulty = big.NewInt(131072) // Difficulty of the Genesis block.
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MinimumDifficulty = big.NewInt(131072) // The minimum that the difficulty may ever be.
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DurationLimit = big.NewInt(13) // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
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)
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