Create2 [EIP-1014]

.dialyzer.ignore-warnings

@@ -39,22 +39,22 @@
 
 # evm warnings
 
-apps/evm/lib/evm/functions.ex:187: Function 'not_enough_gas?'/2 has no local return
-apps/evm/lib/evm/functions.ex:194: Function 'out_of_memory_bounds?'/3 will never be called
-apps/evm/lib/evm/functions.ex:210: Function 'is_invalid_jump_destination?'/3 will never be called
-apps/evm/lib/evm/functions.ex:220: Function 'static_state_modification?'/2 will never be called
+apps/evm/lib/evm/functions.ex:190: Function 'not_enough_gas?'/2 has no local return
+apps/evm/lib/evm/functions.ex:197: Function 'out_of_memory_bounds?'/3 will never be called
+apps/evm/lib/evm/functions.ex:213: Function 'is_invalid_jump_destination?'/3 will never be called
+apps/evm/lib/evm/functions.ex:223: Function 'static_state_modification?'/2 will never be called
 apps/evm/lib/evm/gas.ex:138: Function cost/2 has no local return
 apps/evm/lib/evm/gas.ex:138: Function cost/3 has no local return
 apps/evm/lib/evm/gas.ex:143: The call 'Elixir.EVM.Gas':operation_cost(atom(),_inputs@1::[integer()],_machine_state@1::#{'__struct__':='Elixir.EVM.MachineState', 'active_words':=integer(), 'gas':=integer(), 'last_return_data':=binary(), 'memory':=binary(), 'previously_active_words':=integer(), 'program_counter':=integer(), 'stack':=[integer()]},_exec_env@1::#{'__struct__':='Elixir.EVM.ExecEnv', 'account_interface':=atom(), 'address':=<<_:160>>, 'block_interface':=atom(), 'config':=atom(), 'data':=binary(), 'gas_price':=integer(), 'machine_code':=binary(), 'originator':=<<_:160>>, 'sender':=<<_:160>>, 'stack_depth':=integer(), 'static':=boolean(), 'value_in_wei':=integer()}) breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
-apps/evm/lib/evm/gas.ex:304: Function operation_cost/0 has no local return
-apps/evm/lib/evm/gas.ex:304: The call 'Elixir.EVM.Gas':operation_cost('nil','nil','nil','nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
-apps/evm/lib/evm/gas.ex:304: Function operation_cost/1 has no local return
-apps/evm/lib/evm/gas.ex:304: The call 'Elixir.EVM.Gas':operation_cost(__@1::any(),'nil','nil','nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
-apps/evm/lib/evm/gas.ex:304: Function operation_cost/2 has no local return
-apps/evm/lib/evm/gas.ex:304: The call 'Elixir.EVM.Gas':operation_cost(__@1::any(),__@2::any(),'nil','nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
-apps/evm/lib/evm/gas.ex:304: Function operation_cost/3 has no local return
-apps/evm/lib/evm/gas.ex:304: The call 'Elixir.EVM.Gas':operation_cost(__@1::any(),__@2::any(),__@3::any(),'nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
-apps/evm/lib/evm/gas.ex:566: Function gas_cost_for_nested_operation/2 will never be called
+apps/evm/lib/evm/gas.ex:308: Function operation_cost/0 has no local return
+apps/evm/lib/evm/gas.ex:308: The call 'Elixir.EVM.Gas':operation_cost('nil','nil','nil','nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
+apps/evm/lib/evm/gas.ex:308: Function operation_cost/1 has no local return
+apps/evm/lib/evm/gas.ex:308: The call 'Elixir.EVM.Gas':operation_cost(__@1::any(),'nil','nil','nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
+apps/evm/lib/evm/gas.ex:308: Function operation_cost/2 has no local return
+apps/evm/lib/evm/gas.ex:308: The call 'Elixir.EVM.Gas':operation_cost(__@1::any(),__@2::any(),'nil','nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
+apps/evm/lib/evm/gas.ex:308: Function operation_cost/3 has no local return
+apps/evm/lib/evm/gas.ex:308: The call 'Elixir.EVM.Gas':operation_cost(__@1::any(),__@2::any(),__@3::any(),'nil') breaks the contract (atom(),['Elixir.EVM':val()],['Elixir.EVM':val()],'Elixir.EVM.MachineState':t()) -> t() | 'nil'
+apps/evm/lib/evm/gas.ex:573: Function gas_cost_for_nested_operation/2 will never be called
 apps/evm/lib/evm/machine_state.ex:53: Function subtract_gas/2 has no local return
 apps/evm/lib/evm/operation/environmental_information.ex:114: Function calldataload/2 has no local return
 apps/evm/lib/evm/operation/environmental_information.ex:117: The call 'Elixir.EVM.Helpers':decode_signed(binary()) breaks the contract (integer() | 'nil') -> 'Elixir.EVM':val() | 'nil'

apps/blockchain/lib/blockchain/contract/create_contract.ex

@@ -18,6 +18,7 @@ defmodule Blockchain.Contract.CreateContract do
             init_code: <<>>,
             stack_depth: 0,
             block_header: nil,
+            new_account_address: nil,
             config: EVM.Configuration.Frontier.new()
 
   @typedoc """
@@ -42,13 +43,13 @@ defmodule Blockchain.Contract.CreateContract do
           init_code: EVM.MachineCode.t(),
           stack_depth: integer(),
           block_header: Header.t(),
+          new_account_address: nil | EVM.address(),
           config: EVM.Configuration.t()
         }
 
   @spec execute(t()) :: {:ok | :error, {EVM.state(), EVM.Gas.t(), EVM.SubState.t()}}
   def execute(params) do
-    sender_account = Account.get_account(params.state, params.sender)
-    contract_address = Account.Address.new(params.sender, sender_account.nonce)
+    contract_address = new_account_address(params)
     account = Account.get_account(params.state, contract_address)
 
     if Account.exists?(account) do
@@ -198,4 +199,13 @@ defmodule Blockchain.Contract.CreateContract do
 
     data_size * Gas.codedeposit_cost()
   end
+
+  defp new_account_address(params) do
+    if params.new_account_address do
+      params.new_account_address
+    else
+      sender_account = Account.get_account(params.state, params.sender)
+      Account.Address.new(params.sender, sender_account.nonce)
+    end
+  end
 end

apps/blockchain/lib/blockchain/interface/account_interface.ex

@@ -366,7 +366,7 @@ defimpl EVM.Interface.AccountInterface, for: Blockchain.Interface.AccountInterfa
       ...> |> MerklePatriciaTree.Trie.new()
       ...> |> Blockchain.Account.put_account(<<0x10::160>>, %Blockchain.Account{balance: 11, nonce: 5})
       ...> |> Blockchain.Interface.AccountInterface.new()
-      ...> |> EVM.Interface.AccountInterface.create_contract(<<0x10::160>>, <<0x10::160>>, 1000, 1, 5, EVM.MachineCode.compile([:push1, 3, :push1, 5, :add, :push1, 0x00, :mstore, :push1, 32, :push1, 0, :return]), 5, %Block.Header{nonce: 1},  EVM.Configuration.Frontier.new())
+      ...> |> EVM.Interface.AccountInterface.create_contract(<<0x10::160>>, <<0x10::160>>, 1000, 1, 5, EVM.MachineCode.compile([:push1, 3, :push1, 5, :add, :push1, 0x00, :mstore, :push1, 32, :push1, 0, :return]), 5, %Block.Header{nonce: 1}, nil,  EVM.Configuration.Frontier.new())
       iex> account_interface.state.root_hash
       <<226, 121, 240, 77, 157, 98, 127, 111, 137, 201, 186, 41, 100, 239,
               227, 209, 92, 247, 21, 58, 119, 4, 191, 255, 84, 144, 86, 99, 178,
@@ -382,6 +382,7 @@ defimpl EVM.Interface.AccountInterface, for: Blockchain.Interface.AccountInterfa
           EVM.MachineCode.t(),
           integer(),
           Block.Header.t(),
+          EVM.address() | nil,
           EVM.Configuration.t()
         ) :: {:ok | :error, {AccountInterface.t(), EVM.Gas.t(), EVM.SubState.t()}}
   def create_contract(
@@ -394,6 +395,7 @@ defimpl EVM.Interface.AccountInterface, for: Blockchain.Interface.AccountInterfa
         init_code,
         stack_depth,
         block_header,
+        new_account_address,
         config
       ) do
     sender = Account.Address.from(evm_sender)
@@ -409,6 +411,7 @@ defimpl EVM.Interface.AccountInterface, for: Blockchain.Interface.AccountInterfa
       init_code: init_code,
       stack_depth: stack_depth,
       block_header: block_header,
+      new_account_address: new_account_address,
       config: config
     }
 

apps/blockchain/test/blockchain/state_test.exs

@@ -34,18 +34,6 @@ defmodule Blockchain.StateTest do
       "stZeroKnowledge2/ecmul_0-3_5616_28000_96"
     ],
     "Constantinople" => [
-      "stCreate2/CREATE2_ContractSuicideDuringInit_ThenStoreThenReturn",
-      "stCreate2/CREATE2_Suicide",
-      "stCreate2/Create2OOGafterInitCode",
-      "stCreate2/Create2OOGafterInitCodeReturndata2",
-      "stCreate2/Create2OOGafterInitCodeReturndataSize",
-      "stCreate2/Create2OOGafterInitCodeRevert",
-      "stCreate2/Create2OOGafterInitCodeRevert2",
-      "stCreate2/Create2OnDepth1023",
-      "stCreate2/Create2OnDepth1024",
-      "stCreate2/Create2Recursive",
-      "stCreate2/CreateMessageReverted",
-      "stCreate2/CreateMessageRevertedOOGInInit",
       "stCreate2/RevertDepthCreate2OOG",
       "stCreate2/RevertDepthCreateAddressCollision",
       "stCreate2/RevertInCreateInInit",
@@ -58,18 +46,8 @@ defmodule Blockchain.StateTest do
       "stCreate2/create2callPrecompiles",
       "stCreate2/create2checkFieldsInInitcode",
       "stCreate2/create2collisionBalance",
-      "stCreate2/create2collisionCode",
-      "stCreate2/create2collisionCode2",
-      "stCreate2/create2collisionNonce",
-      "stCreate2/create2collisionSelfdestructed",
-      "stCreate2/create2collisionSelfdestructed2",
-      "stCreate2/create2collisionSelfdestructedRevert",
-      "stCreate2/create2collisionStorage",
-      "stCreate2/create2noCash",
-      "stCreate2/returndatacopy_0_0_following_successful_create",
       "stCreate2/returndatacopy_afterFailing_create",
       "stCreate2/returndatacopy_following_revert_in_create",
-      "stCreate2/returndatasize_following_successful_create",
       "stRevertTest/RevertOpcodeMultipleSubCalls",
       "stZeroKnowledge2/ecmul_0-3_5616_28000_96"
     ],

apps/blockchain/test/blockchain_test.exs

@@ -21,25 +21,6 @@ defmodule BlockchainTest do
     ],
     "Byzantium" => String.split(@failing_byzantium_tests, "\n"),
     "Constantinople" => [
-      "GeneralStateTests/stCreate2/CREATE2_ContractSuicideDuringInit_ThenStoreThenReturn_d0g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d0g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d10g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d11g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d1g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d2g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d3g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d4g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d5g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d6g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d7g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d8g0v0.json",
-      "GeneralStateTests/stCreate2/CREATE2_Suicide_d9g0v0.json",
-      "GeneralStateTests/stCreate2/Create2OOGafterInitCodeReturndata2_d0g1v0.json",
-      "GeneralStateTests/stCreate2/Create2OOGafterInitCodeReturndataSize_d0g0v0.json",
-      "GeneralStateTests/stCreate2/Create2OOGafterInitCodeRevert2_d0g0v0.json",
-      "GeneralStateTests/stCreate2/Create2OOGafterInitCodeRevert_d0g0v0.json",
-      "GeneralStateTests/stCreate2/Create2OOGafterInitCode_d0g0v0.json",
-      "GeneralStateTests/stCreate2/Create2OOGafterInitCode_d0g1v0.json",
       "GeneralStateTests/stCreate2/Create2OnDepth1023_d0g0v0.json",
       "GeneralStateTests/stCreate2/Create2OnDepth1024_d0g0v0.json",
       "GeneralStateTests/stCreate2/Create2Recursive_d0g0v0.json",
@@ -70,25 +51,12 @@ defmodule BlockchainTest do
       "GeneralStateTests/stCreate2/RevertOpcodeInCreateReturns_d0g0v0.json",
       "GeneralStateTests/stCreate2/call_outsize_then_create2_successful_then_returndatasize_d0g0v0.json",
       "GeneralStateTests/stCreate2/call_then_create2_successful_then_returndatasize_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2InitCodes_d0g0v0.json",
       "GeneralStateTests/stCreate2/create2InitCodes_d1g0v0.json",
       "GeneralStateTests/stCreate2/create2InitCodes_d2g0v0.json",
       "GeneralStateTests/stCreate2/create2InitCodes_d3g0v0.json",
-      "GeneralStateTests/stCreate2/create2InitCodes_d4g0v0.json",
-      "GeneralStateTests/stCreate2/create2InitCodes_d5g0v0.json",
-      "GeneralStateTests/stCreate2/create2InitCodes_d6g0v0.json",
-      "GeneralStateTests/stCreate2/create2InitCodes_d7g0v0.json",
-      "GeneralStateTests/stCreate2/create2InitCodes_d8g0v0.json",
       "GeneralStateTests/stCreate2/create2SmartInitCode_d0g0v0.json",
       "GeneralStateTests/stCreate2/create2SmartInitCode_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d2g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d3g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d4g0v0.json",
       "GeneralStateTests/stCreate2/create2callPrecompiles_d5g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d6g0v0.json",
-      "GeneralStateTests/stCreate2/create2callPrecompiles_d7g0v0.json",
       "GeneralStateTests/stCreate2/create2checkFieldsInInitcode_d0g0v0.json",
       "GeneralStateTests/stCreate2/create2checkFieldsInInitcode_d1g0v0.json",
       "GeneralStateTests/stCreate2/create2checkFieldsInInitcode_d2g0v0.json",
@@ -97,32 +65,9 @@ defmodule BlockchainTest do
       "GeneralStateTests/stCreate2/create2checkFieldsInInitcode_d5g0v0.json",
       "GeneralStateTests/stCreate2/create2checkFieldsInInitcode_d6g0v0.json",
       "GeneralStateTests/stCreate2/create2checkFieldsInInitcode_d7g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionBalance_d0g0v0.json",
       "GeneralStateTests/stCreate2/create2collisionBalance_d1g0v0.json",
       "GeneralStateTests/stCreate2/create2collisionBalance_d2g0v0.json",
       "GeneralStateTests/stCreate2/create2collisionBalance_d3g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionCode2_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionCode2_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionCode_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionCode_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionCode_d2g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionNonce_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionNonce_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionNonce_d2g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructed2_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructed2_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructedRevert_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructedRevert_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructedRevert_d2g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructed_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructed_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionSelfdestructed_d2g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionStorage_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionStorage_d1g0v0.json",
-      "GeneralStateTests/stCreate2/create2collisionStorage_d2g0v0.json",
-      "GeneralStateTests/stCreate2/create2noCash_d0g0v0.json",
-      "GeneralStateTests/stCreate2/create2noCash_d1g0v0.json",
-      "GeneralStateTests/stCreate2/returndatacopy_0_0_following_successful_create_d0g0v0.json",
       "GeneralStateTests/stCreate2/returndatacopy_afterFailing_create_d0g0v0.json",
       "GeneralStateTests/stCreate2/returndatacopy_following_revert_in_create_d0g0v0.json",
       "GeneralStateTests/stCreate2/returndatacopy_following_successful_create_d0g0v0.json",
@@ -133,8 +78,7 @@ defmodule BlockchainTest do
       "GeneralStateTests/stReturnDataTest/modexp_modsize0_returndatasize_d0g3v0.json",
       "GeneralStateTests/stSpecialTest/push32withoutByte_d0g0v0.json",
       "bcStateTests/blockhashNonConstArg.json",
-      "bcStateTests/create2collisionwithSelfdestructSameBlock.json",
-      "bcStateTests/suicideStorageCheckVCreate2.json"
+      "bcStateTests/create2collisionwithSelfdestructSameBlock.json"
     ],
     # the rest are not implemented yet
     "EIP158ToByzantiumAt5" => [],

apps/evm/lib/evm/address.ex

@@ -46,6 +46,38 @@ defmodule EVM.Address do
     |> EVM.Helpers.take_n_last_bytes(@size)
   end
 
+  @doc """
+  Returns an address for create2 opcode.
+  """
+  @spec new(integer() | binary(), integer() | binary(), binary() | integer()) :: binary()
+  def new(address, salt, init_code) do
+    binary_address = new(address)
+
+    new_address_start = <<255>>
+
+    binary_salt =
+      if is_binary(salt) do
+        EVM.Helpers.left_pad_bytes(salt, 32)
+      else
+        salt
+        |> :binary.encode_unsigned()
+        |> EVM.Helpers.left_pad_bytes(32)
+      end
+
+    binary_init_code =
+      if is_binary(init_code) do
+        init_code
+      else
+        :binary.encode_unsigned(init_code)
+      end
+
+    code_hash = Keccak.kec(binary_init_code)
+
+    (new_address_start <> binary_address <> binary_salt <> code_hash)
+    |> Keccak.kec()
+    |> EVM.Helpers.take_n_last_bytes(@size)
+  end
+
   @doc """
   Returns an address given a private key
   ## Examples

apps/evm/lib/evm/configuration.ex

@@ -104,4 +104,8 @@ defprotocol EVM.Configuration do
   # EIP1052
   @spec has_extcodehash?(t) :: boolean()
   def has_extcodehash?(t)
+
+  # EIP1014
+  @spec has_create2?(t) :: boolean()
+  def has_create2?(t)
 end

apps/evm/lib/evm/configuration/byzantium.ex

@@ -100,4 +100,7 @@ defimpl EVM.Configuration, for: EVM.Configuration.Byzantium do
 
   @spec has_extcodehash?(Configuration.t()) :: boolean()
   def has_extcodehash?(config), do: Configuration.has_extcodehash?(config.fallback_config)
+
+  @spec has_create2?(Configuration.t()) :: boolean()
+  def has_create2?(config), do: Configuration.has_create2?(config.fallback_config)
 end

apps/evm/lib/evm/configuration/constantinople.ex

@@ -1,7 +1,8 @@
 defmodule EVM.Configuration.Constantinople do
   defstruct fallback_config: EVM.Configuration.Byzantium.new(),
             has_shift_operations: true,
-            has_extcodehash: true
+            has_extcodehash: true,
+            has_create2: true
 
   def new do
     %__MODULE__{}
@@ -96,4 +97,7 @@ defimpl EVM.Configuration, for: EVM.Configuration.Constantinople do
 
   @spec has_extcodehash?(Configuration.t()) :: boolean()
   def has_extcodehash?(config), do: config.has_extcodehash
+
+  @spec has_create2?(Configuration.t()) :: boolean()
+  def has_create2?(config), do: config.has_create2
 end

apps/evm/lib/evm/configuration/eip150.ex

@@ -103,4 +103,7 @@ defimpl EVM.Configuration, for: EVM.Configuration.EIP150 do
 
   @spec has_extcodehash?(Configuration.t()) :: boolean()
   def has_extcodehash?(config), do: Configuration.has_extcodehash?(config.fallback_config)
+
+  @spec has_create2?(Configuration.t()) :: boolean()
+  def has_create2?(config), do: Configuration.has_create2?(config.fallback_config)
 end

apps/evm/lib/evm/configuration/eip158.ex

@@ -95,4 +95,7 @@ defimpl EVM.Configuration, for: EVM.Configuration.EIP158 do
 
   @spec has_extcodehash?(Configuration.t()) :: boolean()
   def has_extcodehash?(config), do: Configuration.has_extcodehash?(config.fallback_config)
+
+  @spec has_create2?(Configuration.t()) :: boolean()
+  def has_create2?(config), do: Configuration.has_create2?(config.fallback_config)
 end

apps/evm/lib/evm/configuration/frontier.ex

@@ -23,7 +23,8 @@ defmodule EVM.Configuration.Frontier do
             has_ec_mult_builtin: false,
             has_ec_pairing_builtin: false,
             has_shift_operations: false,
-            has_extcodehash: false
+            has_extcodehash: false,
+            has_create2: false
 
   def new do
     %__MODULE__{}
@@ -108,4 +109,7 @@ defimpl EVM.Configuration, for: EVM.Configuration.Frontier do
 
   @spec has_extcodehash?(Configuration.t()) :: boolean()
   def has_extcodehash?(config), do: config.has_extcodehash
+
+  @spec has_create2?(Configuration.t()) :: boolean()
+  def has_create2?(config), do: config.has_create2
 end

apps/evm/lib/evm/configuration/homestead.ex

@@ -96,4 +96,7 @@ defimpl EVM.Configuration, for: EVM.Configuration.Homestead do
 
   @spec has_extcodehash?(Configuration.t()) :: boolean()
   def has_extcodehash?(config), do: Configuration.has_extcodehash?(config.fallback_config)
+
+  @spec has_create2?(Configuration.t()) :: boolean()
+  def has_create2?(config), do: Configuration.has_create2?(config.fallback_config)
 end