github.com/bloxroute-labs/bor@v0.1.4/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  	GenesisGasLimit      uint64 = 4712388 // Gas limit of the Genesis block.
    25  
    26  	MaximumExtraDataSize  uint64 = 32    // Maximum size extra data may be after Genesis.
    27  	ExpByteGas            uint64 = 10    // Times ceil(log256(exponent)) for the EXP instruction.
    28  	SloadGas              uint64 = 50    // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.
    29  	CallValueTransferGas  uint64 = 9000  // Paid for CALL when the value transfer is non-zero.
    30  	CallNewAccountGas     uint64 = 25000 // Paid for CALL when the destination address didn't exist prior.
    31  	TxGas                 uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
    32  	TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
    33  	TxDataZeroGas         uint64 = 4     // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
    34  	QuadCoeffDiv          uint64 = 512   // Divisor for the quadratic particle of the memory cost equation.
    35  	LogDataGas            uint64 = 8     // Per byte in a LOG* operation's data.
    36  	CallStipend           uint64 = 2300  // Free gas given at beginning of call.
    37  
    38  	Sha3Gas     uint64 = 30 // Once per SHA3 operation.
    39  	Sha3WordGas uint64 = 6  // Once per word of the SHA3 operation's data.
    40  
    41  	SstoreSetGas    uint64 = 20000 // Once per SLOAD operation.
    42  	SstoreResetGas  uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.
    43  	SstoreClearGas  uint64 = 5000  // Once per SSTORE operation if the zeroness doesn't change.
    44  	SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.
    45  
    46  	NetSstoreNoopGas  uint64 = 200   // Once per SSTORE operation if the value doesn't change.
    47  	NetSstoreInitGas  uint64 = 20000 // Once per SSTORE operation from clean zero.
    48  	NetSstoreCleanGas uint64 = 5000  // Once per SSTORE operation from clean non-zero.
    49  	NetSstoreDirtyGas uint64 = 200   // Once per SSTORE operation from dirty.
    50  
    51  	NetSstoreClearRefund      uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot
    52  	NetSstoreResetRefund      uint64 = 4800  // Once per SSTORE operation for resetting to the original non-zero value
    53  	NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value
    54  
    55  	JumpdestGas      uint64 = 1     // Once per JUMPDEST operation.
    56  	EpochDuration    uint64 = 30000 // Duration between proof-of-work epochs.
    57  	CallGas          uint64 = 40    // Once per CALL operation & message call transaction.
    58  	CreateDataGas    uint64 = 200   //
    59  	CallCreateDepth  uint64 = 1024  // Maximum depth of call/create stack.
    60  	ExpGas           uint64 = 10    // Once per EXP instruction
    61  	LogGas           uint64 = 375   // Per LOG* operation.
    62  	CopyGas          uint64 = 3     //
    63  	StackLimit       uint64 = 1024  // Maximum size of VM stack allowed.
    64  	TierStepGas      uint64 = 0     // Once per operation, for a selection of them.
    65  	LogTopicGas      uint64 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.
    66  	CreateGas        uint64 = 32000 // Once per CREATE operation & contract-creation transaction.
    67  	Create2Gas       uint64 = 32000 // Once per CREATE2 operation
    68  	SuicideRefundGas uint64 = 24000 // Refunded following a suicide operation.
    69  	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.
    70  	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.
    71  
    72  	MaxCodeSize = 24576 // Maximum bytecode to permit for a contract
    73  
    74  	// Precompiled contract gas prices
    75  
    76  	EcrecoverGas            uint64 = 3000   // Elliptic curve sender recovery gas price
    77  	Sha256BaseGas           uint64 = 60     // Base price for a SHA256 operation
    78  	Sha256PerWordGas        uint64 = 12     // Per-word price for a SHA256 operation
    79  	Ripemd160BaseGas        uint64 = 600    // Base price for a RIPEMD160 operation
    80  	Ripemd160PerWordGas     uint64 = 120    // Per-word price for a RIPEMD160 operation
    81  	IdentityBaseGas         uint64 = 15     // Base price for a data copy operation
    82  	IdentityPerWordGas      uint64 = 3      // Per-work price for a data copy operation
    83  	ModExpQuadCoeffDiv      uint64 = 20     // Divisor for the quadratic particle of the big int modular exponentiation
    84  	Bn256AddGas             uint64 = 500    // Gas needed for an elliptic curve addition
    85  	Bn256ScalarMulGas       uint64 = 40000  // Gas needed for an elliptic curve scalar multiplication
    86  	Bn256PairingBaseGas     uint64 = 100000 // Base price for an elliptic curve pairing check
    87  	Bn256PairingPerPointGas uint64 = 80000  // Per-point price for an elliptic curve pairing check
    88  )
    89  
    90  var (
    91  	DifficultyBoundDivisor = big.NewInt(2048)   // The bound divisor of the difficulty, used in the update calculations.
    92  	GenesisDifficulty      = big.NewInt(131072) // Difficulty of the Genesis block.
    93  	MinimumDifficulty      = big.NewInt(131072) // The minimum that the difficulty may ever be.
    94  	DurationLimit          = big.NewInt(13)     // The decision boundary on the blocktime duration used to determine whether difficulty should go up or not.
    95  )