core/vm: implement 7904 repricings for basic opcodes

Author: MariusVanDerWijden

core/vm/eips.go

@@ -41,6 +41,7 @@ var activators = map[int]func(*JumpTable){
 	1153: enable1153,
 	4762: enable4762,
 	7702: enable7702,
+	7904: enable7904,
 	7939: enable7939,
 }
 
@@ -556,3 +557,80 @@ func enable7702(jt *JumpTable) {
 	jt[STATICCALL].dynamicGas = gasStaticCallEIP7702
 	jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP7702
 }
+
+// enable7904 enables the EIP-7907 gas cost changes.
+func enable7904(jt *JumpTable) {
+	jt[ADD].constantGas = GasBaseCost
+	jt[MUL].constantGas = GasBaseCost
+	jt[SUB].constantGas = GasBaseCost
+	jt[DIV].constantGas = GasBaseCost
+	jt[SDIV].constantGas = GasBaseCost
+	jt[MOD].constantGas = GasBaseCost
+	jt[SMOD].constantGas = GasBaseCost
+	jt[ADDMOD].constantGas = GasFastCost
+	jt[MULMOD].constantGas = GasMidCost
+	//jt[EXP].constantGas = GasMidCost
+	jt[SIGNEXTEND].constantGas = GasBaseCost
+	jt[LT].constantGas = GasBaseCost
+	jt[GT].constantGas = GasBaseCost
+	jt[SLT].constantGas = GasBaseCost
+	jt[SGT].constantGas = GasBaseCost
+	jt[EQ].constantGas = GasBaseCost
+	jt[ISZERO].constantGas = GasBaseCost
+	jt[AND].constantGas = GasBaseCost
+	jt[OR].constantGas = GasBaseCost
+	jt[XOR].constantGas = GasBaseCost
+	jt[NOT].constantGas = GasBaseCost
+	jt[BYTE].constantGas = GasBaseCost
+	jt[SHL].constantGas = GasBaseCost
+	jt[SHR].constantGas = GasBaseCost
+	jt[SAR].constantGas = GasBaseCost
+	jt[ADDRESS].constantGas = GasBaseCost
+	//jt[BALANCE].constantGas = GasBaseCost
+
+	jt[ORIGIN].constantGas = GasBaseCost
+	jt[CALLER].constantGas = GasBaseCost
+	jt[CALLVALUE].constantGas = GasBaseCost
+	jt[CALLDATALOAD].constantGas = GasBaseCost
+	jt[CALLDATASIZE].constantGas = GasBaseCost
+	//jt[CALLDATACOPY].constantGas = GasBaseCost
+	jt[CODESIZE].constantGas = GasBaseCost
+	//jt[CODECOPY].constantGas = GasBaseCost
+	jt[GASPRICE].constantGas = GasBaseCost
+	//jt[EXTCODESIZE].constantGas = GasBaseCost
+	//jt[EXTCODECOPY].constantGas = GasBaseCost
+	jt[RETURNDATASIZE].constantGas = GasBaseCost
+	//jt[RETURNDATACOPY].constantGas = GasBaseCost
+	//jt[EXTCODEHASH].constantGas = GasBaseCost
+	jt[COINBASE].constantGas = GasBaseCost
+	jt[TIMESTAMP].constantGas = GasBaseCost
+	jt[NUMBER].constantGas = GasBaseCost
+	jt[GASLIMIT].constantGas = GasBaseCost
+	jt[CHAINID].constantGas = GasBaseCost
+	jt[SELFBALANCE].constantGas = GasBaseCost
+	jt[POP].constantGas = GasBaseCost
+	jt[MLOAD].constantGas = GasBaseCost
+	//jt[MSTORE].constantGas = GasBaseCost
+	//jt[MSTORE8].constantGas = GasBaseCost
+	jt[JUMP].constantGas = GasBaseCost
+	jt[JUMPI].constantGas = GasBaseCost
+	jt[PC].constantGas = GasBaseCost
+	jt[MSIZE].constantGas = GasBaseCost
+	jt[TLOAD].constantGas = GasWarmStorageCost
+	jt[TSTORE].constantGas = GasWarmStorageCost
+	jt[JUMPDEST].constantGas = GasBaseCost
+	//jt[MCOPY].constantGas = GasBaseCost
+	jt[PUSH0].constantGas = GasBaseCost
+	for i := PUSH1; i < PUSH32; i++ {
+		jt[i].constantGas = GasBaseCost
+	}
+	for i := PUSH1; i < PUSH32; i++ {
+		jt[i].constantGas = GasBaseCost
+	}
+	for i := DUP1; i < DUP16; i++ {
+		jt[i].constantGas = GasBaseCost
+	}
+	for i := SWAP1; i < SWAP16; i++ {
+		jt[i].constantGas = GasBaseCost
+	}
+}

core/vm/evm.go

@@ -149,6 +149,8 @@ func NewEVM(blockCtx BlockContext, statedb StateDB, chainConfig *params.ChainCon
 	evm.precompiles = activePrecompiledContracts(evm.chainRules)
 
 	switch {
+	case evm.chainRules.IsAmsterdam:
+		evm.table = &amsterdamInstructionSet
 	case evm.chainRules.IsOsaka:
 		evm.table = &osakaInstructionSet
 	case evm.chainRules.IsVerkle:

core/vm/gas.go

@@ -22,13 +22,17 @@ import (
 
 // Gas costs
 const (
-	GasQuickStep   uint64 = 2
-	GasFastestStep uint64 = 3
-	GasFastishStep uint64 = 4
-	GasFastStep    uint64 = 5
-	GasMidStep     uint64 = 8
-	GasSlowStep    uint64 = 10
-	GasExtStep     uint64 = 20
+	GasQuickStep       uint64 = 2
+	GasFastestStep     uint64 = 3
+	GasFastishStep     uint64 = 4
+	GasFastStep        uint64 = 5
+	GasMidStep         uint64 = 8
+	GasSlowStep        uint64 = 10
+	GasExtStep         uint64 = 20
+	GasBaseCost        uint64 = 1
+	GasFastCost        uint64 = 2
+	GasMidCost         uint64 = 3
+	GasWarmStorageCost uint64 = 5
 )
 
 // callGas returns the actual gas cost of the call.

core/vm/jump_table.go

@@ -63,6 +63,7 @@ var (
 	verkleInstructionSet           = newVerkleInstructionSet()
 	pragueInstructionSet           = newPragueInstructionSet()
 	osakaInstructionSet            = newOsakaInstructionSet()
+	amsterdamInstructionSet        = newAmsterdamInstructionSet()
 )
 
 // JumpTable contains the EVM opcodes supported at a given fork.
@@ -92,6 +93,12 @@ func newVerkleInstructionSet() JumpTable {
 	return validate(instructionSet)
 }
 
+func newAmsterdamInstructionSet() JumpTable {
+	instructionSet := newOsakaInstructionSet()
+	enable7904(&instructionSet) // EIP-7904 (gas repricings)
+	return validate(instructionSet)
+}
+
 func newOsakaInstructionSet() JumpTable {
 	instructionSet := newPragueInstructionSet()
 	enable7939(&instructionSet) // EIP-7939 (CLZ opcode)