[ETCM-19] EIP-1344: ChainID opcode

Author: mmrozek

src/main/scala/io/iohk/ethereum/extvm/VMServer.scala

@@ -188,7 +188,8 @@ class VMServer(messageHandler: MessageHandler)
       accountStartNonce = conf.accountStartNonce,
       atlantisBlockNumber = BigInt(8772000),  //TODO include atlantis block number in protobuf
       aghartaBlockNumber = BigInt(9573000),   //TODO include agharta block number in protobuf
-      phoenixBlockNumber = BigInt(10500839)   //TODO include phoenix block number in protobuf
+      phoenixBlockNumber = BigInt(10500839),   //TODO include phoenix block number in protobuf
+      chainId = 0x3d.toByte   //TODO include chainId in protobuf
     )
   }
 }

src/main/scala/io/iohk/ethereum/vm/BlockchainConfigForEvm.scala

@@ -20,7 +20,8 @@ case class BlockchainConfigForEvm(
   accountStartNonce: UInt256,
   atlantisBlockNumber: BigInt,
   aghartaBlockNumber: BigInt,
-  phoenixBlockNumber: BigInt
+  phoenixBlockNumber: BigInt,
+  chainId: Byte
 )
 
 object BlockchainConfigForEvm {
@@ -38,7 +39,8 @@ object BlockchainConfigForEvm {
       accountStartNonce = accountStartNonce,
       atlantisBlockNumber = atlantisBlockNumber,
       aghartaBlockNumber = aghartaBlockNumber,
-      phoenixBlockNumber = phoenixBlockNumber
+      phoenixBlockNumber = phoenixBlockNumber,
+      chainId = chainId
     )
   }
 

src/main/scala/io/iohk/ethereum/vm/EvmConfig.scala

@@ -4,6 +4,7 @@ import akka.util.ByteString
 import io.iohk.ethereum.domain.UInt256
 import io.iohk.ethereum.utils.BlockchainConfig
 import EvmConfig._
+import io.iohk.ethereum
 import io.iohk.ethereum.vm
 
 // scalastyle:off number.of.methods
@@ -36,7 +37,8 @@ object EvmConfig {
       blockchainConfig.byzantiumBlockNumber -> ByzantiumConfigBuilder,
       blockchainConfig.constantinopleBlockNumber -> ConstantinopleConfigBuilder,
       blockchainConfig.atlantisBlockNumber -> AtlantisConfigBuilder,
-      blockchainConfig.aghartaBlockNumber -> AghartaConfigBuilder
+      blockchainConfig.aghartaBlockNumber -> AghartaConfigBuilder,
+      blockchainConfig.phoenixBlockNumber -> PhoenixConfigBuilder
     )
 
     // highest transition block that is less/equal to `blockNumber`
@@ -53,6 +55,7 @@ object EvmConfig {
   val AtlantisOpCodes = ByzantiumOpCodes
   val ConstantinopleOpCodes = OpCodeList(OpCodes.ConstantinopleOpCodes)
   val AghartaOpCodes = ConstantinopleOpCodes
+  val PhoenixOpCodes = OpCodeList(OpCodes.PhoenixOpCodes)
 
   val FrontierConfigBuilder: EvmConfigBuilder = config => EvmConfig(
     blockchainConfig = config,
@@ -105,6 +108,11 @@ object EvmConfig {
     opCodeList = AghartaOpCodes
   )
 
+  val PhoenixConfigBuilder: EvmConfigBuilder = config => AghartaConfigBuilder(config).copy(
+    feeSchedule = new ethereum.vm.FeeSchedule.PhoenixFeeSchedule,
+    opCodeList = PhoenixOpCodes
+  )
+
   case class OpCodeList(opCodes: List[OpCode]) {
     val byteToOpCode: Map[Byte, OpCode] =
       opCodes.map(op => op.code -> op).toMap
@@ -253,6 +261,8 @@ object FeeSchedule {
 
   class AghartaFeeSchedule extends ByzantiumFeeSchedule
 
+  class PhoenixFeeSchedule extends AghartaFeeSchedule
+
 }
 
 trait FeeSchedule {

src/main/scala/io/iohk/ethereum/vm/OpCode.scala

@@ -166,6 +166,9 @@ object OpCodes {
 
   val ConstantinopleOpCodes: List[OpCode] =
     List(EXTCODEHASH, CREATE2, SHL, SHR, SAR) ++ ByzantiumOpCodes
+
+  val PhoenixOpCodes: List[OpCode] =
+    List(CHAINID) ++ ConstantinopleOpCodes
 }
 
 object OpCode {
@@ -1149,3 +1152,5 @@ case object SELFDESTRUCT extends OpCode(0xff, 1, 0, _.G_selfdestruct) {
 
   override protected def availableInContext[W <: WorldStateProxy[W, S], S <: Storage[S]]: ProgramState[W, S] => Boolean = !_.staticCtx
 }
+
+case object CHAINID extends ConstOp(0x46)(state => UInt256(state.env.evmConfig.blockchainConfig.chainId))

src/test/scala/io/iohk/ethereum/extvm/VMClientSpec.scala

@@ -177,7 +177,8 @@ class VMClientSpec extends FlatSpec with Matchers with MockFactory {
       accountStartNonce = 0,
       atlantisBlockNumber = 0,
       aghartaBlockNumber = 0,
-      phoenixBlockNumber = 0
+      phoenixBlockNumber = 0,
+      chainId = 0x3d.toByte
     )
     val evmConfig = EvmConfig.FrontierConfigBuilder(blockchainConfigForEvm)
 

src/test/scala/io/iohk/ethereum/vm/Fixtures.scala

@@ -17,7 +17,8 @@ object Fixtures {
     accountStartNonce = 0,
     atlantisBlockNumber = 0,
     aghartaBlockNumber = 0,
-    phoenixBlockNumber = 0
+    phoenixBlockNumber = 0,
+    chainId = 0x3d.toByte
   )
 
 }

src/test/scala/io/iohk/ethereum/vm/VMSpec.scala

@@ -157,7 +157,8 @@ class VMSpec extends WordSpec with PropertyChecks with Matchers {
       accountStartNonce = 0,
       atlantisBlockNumber = Long.MaxValue,
       aghartaBlockNumber = Long.MaxValue,
-      phoenixBlockNumber = Long.MaxValue
+      phoenixBlockNumber = Long.MaxValue,
+      chainId = 0x3d.toByte
     )
 
     val homesteadConfig = EvmConfig.forBlock(0, evmBlockchainConfig.copy(homesteadBlockNumber = 0))