core: implement EIP-3651, warm coinbase (#317)

* core: implement EIP-3651, warm coinbase (ethereum#25819)

Implements EIP-3651, "Warm Coinbase", for Shanghai hardfork. Specification: https://eips.ethereum.org/EIPS/eip-3651.

* improve test

* update to shanghai

* trigger ci

* fix comments

---------

Co-authored-by: Marius van der Wijden <[email protected]>

Author: NazariiDenha

core/blockchain_test.go

@@ -3238,3 +3238,118 @@ func TestTransactionCountLimit(t *testing.T) {
 		t.Fatalf("error mismatch: have: %v, want: %v", err, consensus.ErrInvalidTxCount)
 	}
 }
+
+func TestEIP3651(t *testing.T) {
+	var (
+		addraa = common.HexToAddress("0x000000000000000000000000000000000000aaaa")
+		addrbb = common.HexToAddress("0x000000000000000000000000000000000000bbbb")
+		engine = ethash.NewFaker()
+		db     = rawdb.NewMemoryDatabase()
+
+		// A sender who makes transactions, has some funds
+		key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+		key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
+		addr1   = crypto.PubkeyToAddress(key1.PublicKey)
+		addr2   = crypto.PubkeyToAddress(key2.PublicKey)
+		funds   = new(big.Int).Mul(common.Big1, big.NewInt(params.Ether))
+		gspec   = &Genesis{
+			Config: params.AllEthashProtocolChanges,
+			Alloc: GenesisAlloc{
+				addr1: {Balance: funds},
+				addr2: {Balance: funds},
+				// The address 0xAAAA sloads 0x00 and 0x01
+				addraa: {
+					Code: []byte{
+						byte(vm.PC),
+						byte(vm.PC),
+						byte(vm.SLOAD),
+						byte(vm.SLOAD),
+					},
+					Nonce:   0,
+					Balance: big.NewInt(0),
+				},
+				// The address 0xBBBB calls 0xAAAA
+				addrbb: {
+					Code: []byte{
+						byte(vm.PUSH1), 0, // out size
+						byte(vm.DUP1),  // out offset
+						byte(vm.DUP1),  // out insize
+						byte(vm.DUP1),  // in offset
+						byte(vm.PUSH2), // address
+						byte(0xaa),
+						byte(0xaa),
+						byte(vm.GAS), // gas
+						byte(vm.DELEGATECALL),
+					},
+					Nonce:   0,
+					Balance: big.NewInt(0),
+				},
+			},
+		}
+		genesis = gspec.MustCommit(db)
+	)
+
+	gspec.Config.BerlinBlock = common.Big0
+	gspec.Config.LondonBlock = common.Big0
+	gspec.Config.ShanghaiBlock = common.Big0
+	signer := types.LatestSigner(gspec.Config)
+
+	blocks, _ := GenerateChain(gspec.Config, genesis, engine, db, 1, func(i int, b *BlockGen) {
+		b.SetCoinbase(addraa)
+		// One transaction to Coinbase
+		txdata := &types.DynamicFeeTx{
+			ChainID:    gspec.Config.ChainID,
+			Nonce:      0,
+			To:         &addrbb,
+			Gas:        500000,
+			GasFeeCap:  newGwei(5),
+			GasTipCap:  big.NewInt(2),
+			AccessList: nil,
+			Data:       []byte{},
+		}
+		tx := types.NewTx(txdata)
+		tx, err := types.SignTx(tx, signer, key1)
+		if err != nil {
+			t.Fatalf("failed to sign tx: %v", err)
+		}
+		b.AddTx(tx)
+	})
+	chain, err := NewBlockChain(db, nil, gspec.Config, engine, vm.Config{}, nil, nil)
+	if err != nil {
+		t.Fatalf("failed to create tester chain: %v", err)
+	}
+	if n, err := chain.InsertChain(blocks); err != nil {
+		t.Fatalf("block %d: failed to insert into chain: %v", n, err)
+	}
+
+	block := chain.GetBlockByNumber(1)
+
+	// 1+2: Ensure EIP-1559 access lists are accounted for via gas usage.
+	innerGas := vm.GasQuickStep*2 + params.ColdSloadCostEIP2929*2
+	expectedGas := params.TxGas + 5*vm.GasFastestStep + vm.GasQuickStep + 100 + innerGas // 100 because 0xaaaa is in access list
+	if block.GasUsed() != expectedGas {
+		t.Fatalf("incorrect amount of gas spent: expected %d, got %d", expectedGas, block.GasUsed())
+	}
+
+	state, err := chain.State()
+	if err != nil {
+		t.Fatalf("failed to get new state: %v", err)
+	}
+
+	// 3: Ensure that miner received only the tx's tip.
+	actual := state.GetBalance(block.Coinbase())
+	expected := new(big.Int).Add(
+		new(big.Int).SetUint64(block.GasUsed()*block.Transactions()[0].GasTipCap().Uint64()),
+		ethash.ConstantinopleBlockReward,
+	)
+	if actual.Cmp(expected) != 0 {
+		t.Fatalf("miner balance incorrect: expected %d, got %d", expected, actual)
+	}
+
+	// 4: Ensure the tx sender paid for the gasUsed * (tip + block baseFee).
+	actual = new(big.Int).Sub(funds, state.GetBalance(addr1))
+	expected = new(big.Int).SetUint64(block.GasUsed() * (block.Transactions()[0].GasTipCap().Uint64() + block.BaseFee().Uint64()))
+	if actual.Cmp(expected) != 0 {
+		t.Fatalf("sender balance incorrect: expected %d, got %d", expected, actual)
+	}
+}

core/state/statedb.go

@@ -33,6 +33,7 @@ import (
 	"github.com/scroll-tech/go-ethereum/crypto"
 	"github.com/scroll-tech/go-ethereum/log"
 	"github.com/scroll-tech/go-ethereum/metrics"
+	"github.com/scroll-tech/go-ethereum/params"
 	"github.com/scroll-tech/go-ethereum/rlp"
 	"github.com/scroll-tech/go-ethereum/trie"
 )
@@ -1018,15 +1019,16 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (common.Hash, error) {
 }
 
 // PrepareAccessList handles the preparatory steps for executing a state transition with
-// regards to both EIP-2929 and EIP-2930:
+// regards to EIP-2929, EIP-2930 and EIP-3651:
 //
 // - Add sender to access list (2929)
 // - Add destination to access list (2929)
 // - Add precompiles to access list (2929)
 // - Add the contents of the optional tx access list (2930)
+// - Add coinbase to access list (3651)
 //
 // This method should only be called if Berlin/2929+2930 is applicable at the current number.
-func (s *StateDB) PrepareAccessList(sender common.Address, dst *common.Address, precompiles []common.Address, list types.AccessList) {
+func (s *StateDB) PrepareAccessList(rules params.Rules, sender, coinbase common.Address, dst *common.Address, precompiles []common.Address, list types.AccessList) {
 	s.AddAddressToAccessList(sender)
 	if dst != nil {
 		s.AddAddressToAccessList(*dst)
@@ -1041,6 +1043,9 @@ func (s *StateDB) PrepareAccessList(sender common.Address, dst *common.Address,
 			s.AddSlotToAccessList(el.Address, key)
 		}
 	}
+	if rules.IsShanghai { // EIP-3651: warm coinbase
+		s.AddAddressToAccessList(coinbase)
+	}
 }
 
 // AddAddressToAccessList adds the given address to the access list

core/state_transition.go

@@ -338,7 +338,7 @@ func (st *StateTransition) TransitionDb() (*ExecutionResult, error) {
 
 	// Set up the initial access list.
 	if rules := st.evm.ChainConfig().Rules(st.evm.Context.BlockNumber); rules.IsBerlin {
-		st.state.PrepareAccessList(msg.From(), msg.To(), vm.ActivePrecompiles(rules), msg.AccessList())
+		st.state.PrepareAccessList(rules, msg.From(), st.evm.Context.Coinbase, msg.To(), vm.ActivePrecompiles(rules), msg.AccessList())
 	}
 	var (
 		ret   []byte

core/vm/interface.go

@@ -21,6 +21,7 @@ import (
 
 	"github.com/scroll-tech/go-ethereum/common"
 	"github.com/scroll-tech/go-ethereum/core/types"
+	"github.com/scroll-tech/go-ethereum/params"
 )
 
 // StateDB is an EVM database for full state querying.
@@ -64,7 +65,7 @@ type StateDB interface {
 	// is defined according to EIP161 (balance = nonce = code = 0).
 	Empty(common.Address) bool
 
-	PrepareAccessList(sender common.Address, dest *common.Address, precompiles []common.Address, txAccesses types.AccessList)
+	PrepareAccessList(rules params.Rules, sender, coinbase common.Address, dest *common.Address, precompiles []common.Address, txAccesses types.AccessList)
 	AddressInAccessList(addr common.Address) bool
 	SlotInAccessList(addr common.Address, slot common.Hash) (addressOk bool, slotOk bool)
 	// AddAddressToAccessList adds the given address to the access list. This operation is safe to perform

core/vm/runtime/runtime.go

@@ -120,7 +120,7 @@ func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
 		sender  = vm.AccountRef(cfg.Origin)
 	)
 	if rules := cfg.ChainConfig.Rules(vmenv.Context.BlockNumber); rules.IsBerlin {
-		cfg.State.PrepareAccessList(cfg.Origin, &address, vm.ActivePrecompiles(rules), nil)
+		cfg.State.PrepareAccessList(rules, cfg.Origin, cfg.Coinbase, &address, vm.ActivePrecompiles(rules), nil)
 	}
 	cfg.State.CreateAccount(address)
 	// set the receiver's (the executing contract) code for execution.
@@ -152,7 +152,7 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
 		sender = vm.AccountRef(cfg.Origin)
 	)
 	if rules := cfg.ChainConfig.Rules(vmenv.Context.BlockNumber); rules.IsBerlin {
-		cfg.State.PrepareAccessList(cfg.Origin, nil, vm.ActivePrecompiles(rules), nil)
+		cfg.State.PrepareAccessList(rules, cfg.Origin, cfg.Coinbase, nil, vm.ActivePrecompiles(rules), nil)
 	}
 	// Call the code with the given configuration.
 	code, address, leftOverGas, err := vmenv.Create(
@@ -178,7 +178,7 @@ func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, er
 	statedb := cfg.State
 
 	if rules := cfg.ChainConfig.Rules(vmenv.Context.BlockNumber); rules.IsBerlin {
-		statedb.PrepareAccessList(cfg.Origin, &address, vm.ActivePrecompiles(rules), nil)
+		statedb.PrepareAccessList(rules, cfg.Origin, cfg.Coinbase, &address, vm.ActivePrecompiles(rules), nil)
 	}
 	// Call the code with the given configuration.
 	ret, leftOverGas, err := vmenv.Call(