protocol_params.go

package vm

const (
	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.
	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.

	SstoreSentryGas   uint64 = 2300  // Minimum gas required to be present for an SSTORE call, not consumed
	SstoreNoopGas     uint64 = 800   // Once per SSTORE operation if the value doesn't change.
	SstoreDirtyGas    uint64 = 800   // Once per SSTORE operation if a dirty value is changed.
	SstoreInitGas     uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero
	SstoreInitRefund  uint64 = 19200 // Once per SSTORE operation for resetting to the original zero value
	SstoreCleanGas    uint64 = 5000  // Once per SSTORE operation from clean non-zero to something else
	SstoreCleanRefund uint64 = 4200  // Once per SSTORE operation for resetting to the original non-zero value
	SstoreClearRefund uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot

	JumpdestGas uint64 = 1 // Once per JUMPDEST operation.

	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.
	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.

	// These have been changed during the course of the chain
	CallGas         uint64 = 700  // Static portion of gas for CALL-derivates after EIP 150 (Tangerine)
	BalanceGas      uint64 = 700  // The cost of a BALANCE operation after EIP 1884 (part of Istanbul)
	ExtcodeSizeGas  uint64 = 700  // Cost of EXTCODESIZE after EIP 150 (Tangerine)
	SloadGas        uint64 = 800  // Cost of SLOAD after EIP 1884 (part of Istanbul)
	ExtcodeHashGas  uint64 = 700  // Cost of EXTCODEHASH after EIP 1884 (part in Istanbul)
	SelfdestructGas uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine)

	// EXP has a dynamic portion depending on the size of the exponent
	ExpByte 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)
	ExtcodeCopyBase 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 = 49152 // 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

	Bn256AddGas             uint64 = 150   // Gas needed for an elliptic curve addition
	Bn256ScalarMulGas       uint64 = 6000  // Gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGas     uint64 = 45000 // Base price for an elliptic curve pairing check
	Bn256PairingPerPointGas uint64 = 34000 // Per-point price for an elliptic curve pairing check
)