Add Shandong gas calculator to support EIP-3860

Signed-off-by: Diego López León <[email protected]>
Signed-off-by: Diego López León <[email protected]>

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java

@@ -50,6 +50,7 @@
 import org.hyperledger.besu.evm.gascalculator.IstanbulGasCalculator;
 import org.hyperledger.besu.evm.gascalculator.LondonGasCalculator;
 import org.hyperledger.besu.evm.gascalculator.PetersburgGasCalculator;
+import org.hyperledger.besu.evm.gascalculator.ShandongGasCalculator;
 import org.hyperledger.besu.evm.gascalculator.SpuriousDragonGasCalculator;
 import org.hyperledger.besu.evm.gascalculator.TangerineWhistleGasCalculator;
 import org.hyperledger.besu.evm.internal.EvmConfiguration;
@@ -79,6 +80,7 @@ public abstract class MainnetProtocolSpecs {
   public static final int FRONTIER_CONTRACT_SIZE_LIMIT = Integer.MAX_VALUE;
 
   public static final int SPURIOUS_DRAGON_CONTRACT_SIZE_LIMIT = 24576;
+  public static final int SHANDONG_CONTRACT_SIZE_LIMIT = 2 * SPURIOUS_DRAGON_CONTRACT_SIZE_LIMIT;
 
   private static final Address RIPEMD160_PRECOMPILE =
       Address.fromHexString("0x0000000000000000000000000000000000000003");
@@ -649,8 +651,7 @@ static ProtocolSpecBuilder shandongDefinition(
         genesisConfigOptions.isZeroBaseFee()
             ? FeeMarket.zeroBaseFee(londonForkBlockNumber)
             : FeeMarket.london(londonForkBlockNumber, genesisConfigOptions.getBaseFeePerGas());
-    final int contractSizeLimit =
-        configContractSizeLimit.orElse(SPURIOUS_DRAGON_CONTRACT_SIZE_LIMIT);
+    final int contractSizeLimit = configContractSizeLimit.orElse(SHANDONG_CONTRACT_SIZE_LIMIT);
 
     return parisDefinition(
             chainId,
@@ -660,6 +661,7 @@ static ProtocolSpecBuilder shandongDefinition(
             genesisConfigOptions,
             quorumCompatibilityMode,
             evmConfiguration)
+        .gasCalculator(ShandongGasCalculator::new)
         .evmBuilder(
             (gasCalculator, jdCacheConfig) ->
                 MainnetEVMs.shandong(

evm/src/main/java/org/hyperledger/besu/evm/gascalculator/ShandongGasCalculator.java

@@ -0,0 +1,46 @@
+package org.hyperledger.besu.evm.gascalculator;
+/*
+ * Copyright contributors to Hyperledger Besu.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+import static org.hyperledger.besu.evm.internal.Words.clampedToLong;
+
+import org.hyperledger.besu.evm.frame.MessageFrame;
+
+import org.apache.tuweni.bytes.Bytes;
+
+public class ShandongGasCalculator extends LondonGasCalculator {
+
+  private static final long INIT_CODE_COST = 2L;
+
+  @Override
+  public long transactionIntrinsicGasCost(final Bytes payload, final boolean isContractCreation) {
+    long intrinsicGasCost = super.transactionIntrinsicGasCost(payload, isContractCreation);
+    if (isContractCreation) {
+      return intrinsicGasCost + calculateInitGasCost(payload.size());
+    } else {
+      return intrinsicGasCost;
+    }
+  }
+
+  @Override
+  public long create2OperationGasCost(final MessageFrame frame) {
+    final long initCodeLength = clampedToLong(frame.getStackItem(2));
+    return super.create2OperationGasCost(frame) + calculateInitGasCost(initCodeLength);
+  }
+
+  private static long calculateInitGasCost(final long initCodeLength) {
+    final int dataLength = (int) Math.ceil(initCodeLength / 32.0);
+    return dataLength * INIT_CODE_COST;
+  }
+}