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core/vm,params/vars: "correctly" implement EIP2200 SLOAD gas cost change #144

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Feb 13, 2020
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core/vm,params/vars: "correctly" implement EIP2200 SLOAD gas cost change #144

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3 changes: 2 additions & 1 deletion core/vm/eips.go
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Original file line number Diff line number Diff line change
Expand Up @@ -56,9 +56,9 @@ func enableSelfBalance(jt *JumpTable) {
// - Define SELFBALANCE, with cost GasFastStep (5)
func enable1884(jt *JumpTable) {
// Gas cost changes
jt[SLOAD].constantGas = vars.SloadGasEIP1884
jt[BALANCE].constantGas = vars.BalanceGasEIP1884
jt[EXTCODEHASH].constantGas = vars.ExtcodeHashGasEIP1884
jt[SLOAD].constantGas = vars.SloadGasEIP1884

// New opcode
enableSelfBalance(jt)
Expand Down Expand Up @@ -92,5 +92,6 @@ func opChainID(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memo

// enable2200 applies EIP-2200 (Rebalance net-metered SSTORE)
func enable2200(jt *JumpTable) {
jt[SLOAD].constantGas = vars.SloadGasEIP2200
jt[SSTORE].dynamicGas = gasSStoreEIP2200
}
1 change: 1 addition & 0 deletions params/vars/protocol_params.go
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Expand Up @@ -104,6 +104,7 @@ var (
SloadGasFrontier uint64 = 50
SloadGasEIP150 uint64 = 200
SloadGasEIP1884 uint64 = 800 // Cost of SLOAD after EIP 1884 (part of Istanbul)
SloadGasEIP2200 uint64 = 800 // Cost of SLOAD after EIP 2200 (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)
Expand Down