call gas

Signed-off-by: Ignacio Hagopian <[email protected]>

Author: jsign

core/vm/gas_table.go

@@ -403,25 +403,6 @@ func gasCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize
 		return 0, ErrGasUintOverflow
 	}
 
-	if evm.chainRules.IsEIP4762 {
-		// If value is transferred, it is charged before 1/64th
-		// is subtracted from the available gas pool.
-		if transfersValue {
-			gas, overflow = math.SafeAdd(gas, evm.Accesses.TouchAndChargeValueTransfer(contract.Address().Bytes()[:], address.Bytes()[:]))
-			if overflow {
-				return 0, ErrGasUintOverflow
-			}
-		}
-	}
-
-	evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0))
-	if err != nil {
-		return 0, err
-	}
-	if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow {
-		return 0, ErrGasUintOverflow
-	}
-
 	return gas, nil
 }
 

core/vm/instructions.go

@@ -756,6 +756,28 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]
 }
 
 func chargeCallVariantEIP4762(evm *EVM, scope *ScopeContext) bool {
+	if evm.chainRules.IsEIP4762 {
+		address := common.Address(scope.Stack.Back(1).Bytes20())
+		transfersValue := !scope.Stack.Back(2).IsZero()
+
+		// If value is transferred, it is charged before 1/64th
+		// is subtracted from the available gas pool.
+		if transfersValue {
+			if !evm.Accesses.TouchAndChargeValueTransfer(scope.Contract.Address().Bytes()[:], address.Bytes()[:], scope.Contract.UseGas) {
+				return false
+			}
+		}
+	}
+
+	var err error
+	evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, scope.Contract.Gas, 0, scope.Stack.Back(0))
+	if err != nil {
+		return false
+	}
+	if scope.Contract.UseGas(evm.callGasTemp) {
+		return false
+	}
+
 	target := common.Address(scope.Stack.Back(1).Bytes20())
 	if _, isPrecompile := evm.precompile(target); isPrecompile {
 		return true