all: implement EIP-2929 (gas cost increases for state access opcodes) + yolo-v2 (#21509)

* core/vm, core/state: implement EIP-2929 + YOLOv2

* core/state, core/vm: fix some review concerns

* core/state, core/vm: address review concerns

* core/vm: address review concerns

* core/vm: better documentation

* core/vm: unify sload cost as fully dynamic

* core/vm: fix typo

* core/vm/runtime: fix compilation flaw

* core/vm/runtime: fix renaming-err leftovers

* core/vm: renaming

* params/config: use correct yolov2 chainid for config

* core, params: use a proper new genesis for yolov2

* core/state/tests: golinter nitpicks

cmd/evm/internal/t8ntool/execution.go

@@ -147,6 +147,16 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
 		vmContext.Origin = msg.From()
 
 		evm := vm.NewEVM(vmContext, statedb, chainConfig, vmConfig)
+		if chainConfig.IsYoloV2(vmContext.BlockNumber) {
+			statedb.AddAddressToAccessList(msg.From())
+			if dst := msg.To(); dst != nil {
+				statedb.AddAddressToAccessList(*dst)
+				// If it's a create-tx, the destination will be added inside evm.create
+			}
+			for _, addr := range evm.ActivePrecompiles() {
+				statedb.AddAddressToAccessList(addr)
+			}
+		}
 		snapshot := statedb.Snapshot()
 		// (ret []byte, usedGas uint64, failed bool, err error)
 		msgResult, err := core.ApplyMessage(evm, msg, gaspool)

cmd/geth/chaincmd.go

@@ -163,7 +163,7 @@ The export-preimages command export hash preimages to an RLP encoded stream`,
 			utils.RinkebyFlag,
 			utils.TxLookupLimitFlag,
 			utils.GoerliFlag,
-			utils.YoloV1Flag,
+			utils.YoloV2Flag,
 			utils.LegacyTestnetFlag,
 		},
 		Category: "BLOCKCHAIN COMMANDS",
@@ -213,7 +213,7 @@ Use "ethereum dump 0" to dump the genesis block.`,
 			utils.RopstenFlag,
 			utils.RinkebyFlag,
 			utils.GoerliFlag,
-			utils.YoloV1Flag,
+			utils.YoloV2Flag,
 			utils.LegacyTestnetFlag,
 			utils.SyncModeFlag,
 		},

cmd/geth/consolecmd.go

@@ -136,7 +136,7 @@ func remoteConsole(ctx *cli.Context) error {
 				path = filepath.Join(path, "rinkeby")
 			} else if ctx.GlobalBool(utils.GoerliFlag.Name) {
 				path = filepath.Join(path, "goerli")
-			} else if ctx.GlobalBool(utils.YoloV1Flag.Name) {
+			} else if ctx.GlobalBool(utils.YoloV2Flag.Name) {
 				path = filepath.Join(path, "yolo-v1")
 			}
 		}

cmd/geth/main.go

@@ -144,7 +144,7 @@ var (
 		utils.RopstenFlag,
 		utils.RinkebyFlag,
 		utils.GoerliFlag,
-		utils.YoloV1Flag,
+		utils.YoloV2Flag,
 		utils.VMEnableDebugFlag,
 		utils.NetworkIdFlag,
 		utils.EthStatsURLFlag,

cmd/geth/usage.go

@@ -42,7 +42,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			utils.NetworkIdFlag,
 			utils.GoerliFlag,
 			utils.RinkebyFlag,
-			utils.YoloV1Flag,
+			utils.YoloV2Flag,
 			utils.RopstenFlag,
 			utils.SyncModeFlag,
 			utils.ExitWhenSyncedFlag,

cmd/puppeth/wizard_genesis.go

@@ -236,8 +236,8 @@ func (w *wizard) manageGenesis() {
 		w.conf.Genesis.Config.IstanbulBlock = w.readDefaultBigInt(w.conf.Genesis.Config.IstanbulBlock)
 
 		fmt.Println()
-		fmt.Printf("Which block should YOLOv1 come into effect? (default = %v)\n", w.conf.Genesis.Config.YoloV1Block)
+		fmt.Printf("Which block should YOLOv2 come into effect? (default = %v)\n", w.conf.Genesis.Config.YoloV2Block)
-		w.conf.Genesis.Config.YoloV1Block = w.readDefaultBigInt(w.conf.Genesis.Config.YoloV1Block)
+		w.conf.Genesis.Config.YoloV2Block = w.readDefaultBigInt(w.conf.Genesis.Config.YoloV2Block)
 
 		out, _ := json.MarshalIndent(w.conf.Genesis.Config, "", "  ")
 		fmt.Printf("Chain configuration updated:\n\n%s\n", out)

cmd/utils/flags.go

@@ -135,9 +135,9 @@ var (
 		Name:  "goerli",
 		Usage: "Görli network: pre-configured proof-of-authority test network",
 	}
-	YoloV1Flag = cli.BoolFlag{
+	YoloV2Flag = cli.BoolFlag{
-		Name:  "yolov1",
+		Name:  "yolov2",
-		Usage: "YOLOv1 network: pre-configured proof-of-authority shortlived test network.",
+		Usage: "YOLOv2 network: pre-configured proof-of-authority shortlived test network.",
 	}
 	RinkebyFlag = cli.BoolFlag{
 		Name:  "rinkeby",
@@ -744,8 +744,8 @@ func MakeDataDir(ctx *cli.Context) string {
 		if ctx.GlobalBool(GoerliFlag.Name) {
 			return filepath.Join(path, "goerli")
 		}
-		if ctx.GlobalBool(YoloV1Flag.Name) {
+		if ctx.GlobalBool(YoloV2Flag.Name) {
-			return filepath.Join(path, "yolo-v1")
+			return filepath.Join(path, "yolo-v2")
 		}
 		return path
 	}
@@ -803,7 +803,7 @@ func setBootstrapNodes(ctx *cli.Context, cfg *p2p.Config) {
 		urls = params.RinkebyBootnodes
 	case ctx.GlobalBool(GoerliFlag.Name):
 		urls = params.GoerliBootnodes
-	case ctx.GlobalBool(YoloV1Flag.Name):
+	case ctx.GlobalBool(YoloV2Flag.Name):
 		urls = params.YoloV1Bootnodes
 	case cfg.BootstrapNodes != nil:
 		return // already set, don't apply defaults.
@@ -839,7 +839,7 @@ func setBootstrapNodesV5(ctx *cli.Context, cfg *p2p.Config) {
 		urls = params.RinkebyBootnodes
 	case ctx.GlobalBool(GoerliFlag.Name):
 		urls = params.GoerliBootnodes
-	case ctx.GlobalBool(YoloV1Flag.Name):
+	case ctx.GlobalBool(YoloV2Flag.Name):
 		urls = params.YoloV1Bootnodes
 	case cfg.BootstrapNodesV5 != nil:
 		return // already set, don't apply defaults.
@@ -1269,8 +1269,8 @@ func setDataDir(ctx *cli.Context, cfg *node.Config) {
 		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "rinkeby")
 	case ctx.GlobalBool(GoerliFlag.Name) && cfg.DataDir == node.DefaultDataDir():
 		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "goerli")
-	case ctx.GlobalBool(YoloV1Flag.Name) && cfg.DataDir == node.DefaultDataDir():
+	case ctx.GlobalBool(YoloV2Flag.Name) && cfg.DataDir == node.DefaultDataDir():
-		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "yolo-v1")
+		cfg.DataDir = filepath.Join(node.DefaultDataDir(), "yolo-v2")
 	}
 }
 
@@ -1483,7 +1483,7 @@ func SetShhConfig(ctx *cli.Context, stack *node.Node) {
 // SetEthConfig applies eth-related command line flags to the config.
 func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 	// Avoid conflicting network flags
-	CheckExclusive(ctx, DeveloperFlag, LegacyTestnetFlag, RopstenFlag, RinkebyFlag, GoerliFlag, YoloV1Flag)
+	CheckExclusive(ctx, DeveloperFlag, LegacyTestnetFlag, RopstenFlag, RinkebyFlag, GoerliFlag, YoloV2Flag)
 	CheckExclusive(ctx, LegacyLightServFlag, LightServeFlag, SyncModeFlag, "light")
 	CheckExclusive(ctx, DeveloperFlag, ExternalSignerFlag) // Can't use both ephemeral unlocked and external signer
 	CheckExclusive(ctx, GCModeFlag, "archive", TxLookupLimitFlag)
@@ -1603,11 +1603,11 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 		}
 		cfg.Genesis = core.DefaultGoerliGenesisBlock()
 		SetDNSDiscoveryDefaults(cfg, params.GoerliGenesisHash)
-	case ctx.GlobalBool(YoloV1Flag.Name):
+	case ctx.GlobalBool(YoloV2Flag.Name):
 		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
-			cfg.NetworkId = 133519467574833 // "yolov1"
+			cfg.NetworkId = 133519467574834 // "yolov2"
 		}
-		cfg.Genesis = core.DefaultYoloV1GenesisBlock()
+		cfg.Genesis = core.DefaultYoloV2GenesisBlock()
 	case ctx.GlobalBool(DeveloperFlag.Name):
 		if !ctx.GlobalIsSet(NetworkIdFlag.Name) {
 			cfg.NetworkId = 1337
@@ -1791,8 +1791,8 @@ func MakeGenesis(ctx *cli.Context) *core.Genesis {
 		genesis = core.DefaultRinkebyGenesisBlock()
 	case ctx.GlobalBool(GoerliFlag.Name):
 		genesis = core.DefaultGoerliGenesisBlock()
-	case ctx.GlobalBool(YoloV1Flag.Name):
+	case ctx.GlobalBool(YoloV2Flag.Name):
-		genesis = core.DefaultYoloV1GenesisBlock()
+		genesis = core.DefaultYoloV2GenesisBlock()
 	case ctx.GlobalBool(DeveloperFlag.Name):
 		Fatalf("Developer chains are ephemeral")
 	}

core/genesis.go

@@ -243,8 +243,8 @@ func (g *Genesis) configOrDefault(ghash common.Hash) *params.ChainConfig {
 		return params.RinkebyChainConfig
 	case ghash == params.GoerliGenesisHash:
 		return params.GoerliChainConfig
-	case ghash == params.YoloV1GenesisHash:
+	case ghash == params.YoloV2GenesisHash:
-		return params.YoloV1ChainConfig
+		return params.YoloV2ChainConfig
 	default:
 		return params.AllEthashProtocolChanges
 	}
@@ -380,10 +380,11 @@ func DefaultGoerliGenesisBlock() *Genesis {
 	}
 }
 
-func DefaultYoloV1GenesisBlock() *Genesis {
+func DefaultYoloV2GenesisBlock() *Genesis {
+	// TODO: Update with yolov2 values + regenerate alloc data
 	return &Genesis{
-		Config:     params.YoloV1ChainConfig,
+		Config:     params.YoloV2ChainConfig,
-		Timestamp:  0x5ed754f1,
+		Timestamp:  0x5f91b932,
 		ExtraData:  hexutil.MustDecode("0x00000000000000000000000000000000000000000000000000000000000000008a37866fd3627c9205a37c8685666f32ec07bb1b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
 		GasLimit:   0x47b760,
 		Difficulty: big.NewInt(1),

core/state/access_list.go

@@ -0,0 +1,136 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package state
+
+import (
+	"github.com/ethereum/go-ethereum/common"
+)
+
+type accessList struct {
+	addresses map[common.Address]int
+	slots     []map[common.Hash]struct{}
+}
+
+// ContainsAddress returns true if the address is in the access list.
+func (al *accessList) ContainsAddress(address common.Address) bool {
+	_, ok := al.addresses[address]
+	return ok
+}
+
+// Contains checks if a slot within an account is present in the access list, returning
+// separate flags for the presence of the account and the slot respectively.
+func (al *accessList) Contains(address common.Address, slot common.Hash) (addressPresent bool, slotPresent bool) {
+	idx, ok := al.addresses[address]
+	if !ok {
+		// no such address (and hence zero slots)
+		return false, false
+	}
+	if idx == -1 {
+		// address yes, but no slots
+		return true, false
+	}
+	_, slotPresent = al.slots[idx][slot]
+	return true, slotPresent
+}
+
+// newAccessList creates a new accessList.
+func newAccessList() *accessList {
+	return &accessList{
+		addresses: make(map[common.Address]int),
+	}
+}
+
+// Copy creates an independent copy of an accessList.
+func (a *accessList) Copy() *accessList {
+	cp := newAccessList()
+	for k, v := range a.addresses {
+		cp.addresses[k] = v
+	}
+	cp.slots = make([]map[common.Hash]struct{}, len(a.slots))
+	for i, slotMap := range a.slots {
+		newSlotmap := make(map[common.Hash]struct{}, len(slotMap))
+		for k := range slotMap {
+			newSlotmap[k] = struct{}{}
+		}
+		cp.slots[i] = newSlotmap
+	}
+	return cp
+}
+
+// AddAddress adds an address to the access list, and returns 'true' if the operation
+// caused a change (addr was not previously in the list).
+func (al *accessList) AddAddress(address common.Address) bool {
+	if _, present := al.addresses[address]; present {
+		return false
+	}
+	al.addresses[address] = -1
+	return true
+}
+
+// AddSlot adds the specified (addr, slot) combo to the access list.
+// Return values are:
+// - address added
+// - slot added
+// For any 'true' value returned, a corresponding journal entry must be made.
+func (al *accessList) AddSlot(address common.Address, slot common.Hash) (addrChange bool, slotChange bool) {
+	idx, addrPresent := al.addresses[address]
+	if !addrPresent || idx == -1 {
+		// Address not present, or addr present but no slots there
+		al.addresses[address] = len(al.slots)
+		slotmap := map[common.Hash]struct{}{slot: {}}
+		al.slots = append(al.slots, slotmap)
+		return !addrPresent, true
+	}
+	// There is already an (address,slot) mapping
+	slotmap := al.slots[idx]
+	if _, ok := slotmap[slot]; !ok {
+		slotmap[slot] = struct{}{}
+		// Journal add slot change
+		return false, true
+	}
+	// No changes required
+	return false, false
+}
+
+// DeleteSlot removes an (address, slot)-tuple from the access list.
+// This operation needs to be performed in the same order as the addition happened.
+// This method is meant to be used  by the journal, which maintains ordering of
+// operations.
+func (al *accessList) DeleteSlot(address common.Address, slot common.Hash) {
+	idx, addrOk := al.addresses[address]
+	// There are two ways this can fail
+	if !addrOk {
+		panic("reverting slot change, address not present in list")
+	}
+	slotmap := al.slots[idx]
+	delete(slotmap, slot)
+	// If that was the last (first) slot, remove it
+	// Since additions and rollbacks are always performed in order,
+	// we can delete the item without worrying about screwing up later indices
+	if len(slotmap) == 0 {
+		al.slots = al.slots[:idx]
+		al.addresses[address] = -1
+	}
+}
+
+// DeleteAddress removes an address from the access list. This operation
+// needs to be performed in the same order as the addition happened.
+// This method is meant to be used  by the journal, which maintains ordering of
+// operations.
+func (al *accessList) DeleteAddress(address common.Address) {
+	delete(al.addresses, address)
+}

core/state/journal.go

@@ -130,6 +130,14 @@ type (
 	touchChange struct {
 		account *common.Address
 	}
+	// Changes to the access list
+	accessListAddAccountChange struct {
+		address *common.Address
+	}
+	accessListAddSlotChange struct {
+		address *common.Address
+		slot    *common.Hash
+	}
 )
 
 func (ch createObjectChange) revert(s *StateDB) {
@@ -234,3 +242,28 @@ func (ch addPreimageChange) revert(s *StateDB) {
 func (ch addPreimageChange) dirtied() *common.Address {
 	return nil
 }
+
+func (ch accessListAddAccountChange) revert(s *StateDB) {
+	/*
+		One important invariant here, is that whenever a (addr, slot) is added, if the
+		addr is not already present, the add causes two journal entries:
+		- one for the address,
+		- one for the (address,slot)
+		Therefore, when unrolling the change, we can always blindly delete the
+		(addr) at this point, since no storage adds can remain when come upon
+		a single (addr) change.
+	*/
+	s.accessList.DeleteAddress(*ch.address)
+}
+
+func (ch accessListAddAccountChange) dirtied() *common.Address {
+	return nil
+}
+
+func (ch accessListAddSlotChange) revert(s *StateDB) {
+	s.accessList.DeleteSlot(*ch.address, *ch.slot)
+}
+
+func (ch accessListAddSlotChange) dirtied() *common.Address {
+	return nil
+}

core/state/statedb.go

@@ -93,6 +93,9 @@ type StateDB struct {
 
 	preimages map[common.Hash][]byte
 
+	// Per-transaction access list
+	accessList *accessList
+
 	// Journal of state modifications. This is the backbone of
 	// Snapshot and RevertToSnapshot.
 	journal        *journal
@@ -129,6 +132,7 @@ func New(root common.Hash, db Database, snaps *snapshot.Tree) (*StateDB, error)
 		logs:                make(map[common.Hash][]*types.Log),
 		preimages:           make(map[common.Hash][]byte),
 		journal:             newJournal(),
+		accessList:          newAccessList(),
 	}
 	if sdb.snaps != nil {
 		if sdb.snap = sdb.snaps.Snapshot(root); sdb.snap != nil {
@@ -178,6 +182,7 @@ func (s *StateDB) Reset(root common.Hash) error {
 			s.snapStorage = make(map[common.Hash]map[common.Hash][]byte)
 		}
 	}
+	s.accessList = newAccessList()
 	return nil
 }
 
@@ -697,6 +702,12 @@ func (s *StateDB) Copy() *StateDB {
 	for hash, preimage := range s.preimages {
 		state.preimages[hash] = preimage
 	}
+	// Do we need to copy the access list? In practice: No. At the start of a
+	// transaction, the access list is empty. In practice, we only ever copy state
+	// _between_ transactions/blocks, never in the middle of a transaction.
+	// However, it doesn't cost us much to copy an empty list, so we do it anyway
+	// to not blow up if we ever decide copy it in the middle of a transaction
+	state.accessList = s.accessList.Copy()
 	return state
 }
 
@@ -798,6 +809,7 @@ func (s *StateDB) Prepare(thash, bhash common.Hash, ti int) {
 	s.thash = thash
 	s.bhash = bhash
 	s.txIndex = ti
+	s.accessList = newAccessList()
 }
 
 func (s *StateDB) clearJournalAndRefund() {
@@ -877,3 +889,38 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (common.Hash, error) {
 	}
 	return root, err
 }
+
+// AddAddressToAccessList adds the given address to the access list
+func (s *StateDB) AddAddressToAccessList(addr common.Address) {
+	if s.accessList.AddAddress(addr) {
+		s.journal.append(accessListAddAccountChange{&addr})
+	}
+}
+
+// AddSlotToAccessList adds the given (address, slot)-tuple to the access list
+func (s *StateDB) AddSlotToAccessList(addr common.Address, slot common.Hash) {
+	addrMod, slotMod := s.accessList.AddSlot(addr, slot)
+	if addrMod {
+		// In practice, this should not happen, since there is no way to enter the
+		// scope of 'address' without having the 'address' become already added
+		// to the access list (via call-variant, create, etc).
+		// Better safe than sorry, though
+		s.journal.append(accessListAddAccountChange{&addr})
+	}
+	if slotMod {
+		s.journal.append(accessListAddSlotChange{
+			address: &addr,
+			slot:    &slot,
+		})
+	}
+}
+
+// AddressInAccessList returns true if the given address is in the access list.
+func (s *StateDB) AddressInAccessList(addr common.Address) bool {
+	return s.accessList.ContainsAddress(addr)
+}
+
+// SlotInAccessList returns true if the given (address, slot)-tuple is in the access list.
+func (s *StateDB) SlotInAccessList(addr common.Address, slot common.Hash) (addressPresent bool, slotPresent bool) {
+	return s.accessList.Contains(addr, slot)
+}

core/state/statedb_test.go

@@ -328,6 +328,20 @@ func newTestAction(addr common.Address, r *rand.Rand) testAction {
 			},
 			args: make([]int64, 1),
 		},
+		{
+			name: "AddAddressToAccessList",
+			fn: func(a testAction, s *StateDB) {
+				s.AddAddressToAccessList(addr)
+			},
+		},
+		{
+			name: "AddSlotToAccessList",
+			fn: func(a testAction, s *StateDB) {
+				s.AddSlotToAccessList(addr,
+					common.Hash{byte(a.args[0])})
+			},
+			args: make([]int64, 1),
+		},
 	}
 	action := actions[r.Intn(len(actions))]
 	var nameargs []string
@@ -727,3 +741,177 @@ func TestMissingTrieNodes(t *testing.T) {
 		t.Fatalf("expected error, got root :%x", root)
 	}
 }
+
+func TestStateDBAccessList(t *testing.T) {
+	// Some helpers
+	addr := func(a string) common.Address {
+		return common.HexToAddress(a)
+	}
+	slot := func(a string) common.Hash {
+		return common.HexToHash(a)
+	}
+
+	memDb := rawdb.NewMemoryDatabase()
+	db := NewDatabase(memDb)
+	state, _ := New(common.Hash{}, db, nil)
+	state.accessList = newAccessList()
+
+	verifyAddrs := func(astrings ...string) {
+		t.Helper()
+		// convert to common.Address form
+		var addresses []common.Address
+		var addressMap = make(map[common.Address]struct{})
+		for _, astring := range astrings {
+			address := addr(astring)
+			addresses = append(addresses, address)
+			addressMap[address] = struct{}{}
+		}
+		// Check that the given addresses are in the access list
+		for _, address := range addresses {
+			if !state.AddressInAccessList(address) {
+				t.Fatalf("expected %x to be in access list", address)
+			}
+		}
+		// Check that only the expected addresses are present in the acesslist
+		for address := range state.accessList.addresses {
+			if _, exist := addressMap[address]; !exist {
+				t.Fatalf("extra address %x in access list", address)
+			}
+		}
+	}
+	verifySlots := func(addrString string, slotStrings ...string) {
+		if !state.AddressInAccessList(addr(addrString)) {
+			t.Fatalf("scope missing address/slots %v", addrString)
+		}
+		var address = addr(addrString)
+		// convert to common.Hash form
+		var slots []common.Hash
+		var slotMap = make(map[common.Hash]struct{})
+		for _, slotString := range slotStrings {
+			s := slot(slotString)
+			slots = append(slots, s)
+			slotMap[s] = struct{}{}
+		}
+		// Check that the expected items are in the access list
+		for i, s := range slots {
+			if _, slotPresent := state.SlotInAccessList(address, s); !slotPresent {
+				t.Fatalf("input %d: scope missing slot %v (address %v)", i, s, addrString)
+			}
+		}
+		// Check that no extra elements are in the access list
+		index := state.accessList.addresses[address]
+		if index >= 0 {
+			stateSlots := state.accessList.slots[index]
+			for s := range stateSlots {
+				if _, slotPresent := slotMap[s]; !slotPresent {
+					t.Fatalf("scope has extra slot %v (address %v)", s, addrString)
+				}
+			}
+		}
+	}
+
+	state.AddAddressToAccessList(addr("aa"))          // 1
+	state.AddSlotToAccessList(addr("bb"), slot("01")) // 2,3
+	state.AddSlotToAccessList(addr("bb"), slot("02")) // 4
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02")
+
+	// Make a copy
+	stateCopy1 := state.Copy()
+	if exp, got := 4, state.journal.length(); exp != got {
+		t.Fatalf("journal length mismatch: have %d, want %d", got, exp)
+	}
+
+	// same again, should cause no journal entries
+	state.AddSlotToAccessList(addr("bb"), slot("01"))
+	state.AddSlotToAccessList(addr("bb"), slot("02"))
+	state.AddAddressToAccessList(addr("aa"))
+	if exp, got := 4, state.journal.length(); exp != got {
+		t.Fatalf("journal length mismatch: have %d, want %d", got, exp)
+	}
+	// some new ones
+	state.AddSlotToAccessList(addr("bb"), slot("03")) // 5
+	state.AddSlotToAccessList(addr("aa"), slot("01")) // 6
+	state.AddSlotToAccessList(addr("cc"), slot("01")) // 7,8
+	state.AddAddressToAccessList(addr("cc"))
+	if exp, got := 8, state.journal.length(); exp != got {
+		t.Fatalf("journal length mismatch: have %d, want %d", got, exp)
+	}
+
+	verifyAddrs("aa", "bb", "cc")
+	verifySlots("aa", "01")
+	verifySlots("bb", "01", "02", "03")
+	verifySlots("cc", "01")
+
+	// now start rolling back changes
+	state.journal.revert(state, 7)
+	if _, ok := state.SlotInAccessList(addr("cc"), slot("01")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb", "cc")
+	verifySlots("aa", "01")
+	verifySlots("bb", "01", "02", "03")
+
+	state.journal.revert(state, 6)
+	if state.AddressInAccessList(addr("cc")) {
+		t.Fatalf("addr present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("aa", "01")
+	verifySlots("bb", "01", "02", "03")
+
+	state.journal.revert(state, 5)
+	if _, ok := state.SlotInAccessList(addr("aa"), slot("01")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02", "03")
+
+	state.journal.revert(state, 4)
+	if _, ok := state.SlotInAccessList(addr("bb"), slot("03")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02")
+
+	state.journal.revert(state, 3)
+	if _, ok := state.SlotInAccessList(addr("bb"), slot("02")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01")
+
+	state.journal.revert(state, 2)
+	if _, ok := state.SlotInAccessList(addr("bb"), slot("01")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+
+	state.journal.revert(state, 1)
+	if state.AddressInAccessList(addr("bb")) {
+		t.Fatalf("addr present, expected missing")
+	}
+	verifyAddrs("aa")
+
+	state.journal.revert(state, 0)
+	if state.AddressInAccessList(addr("aa")) {
+		t.Fatalf("addr present, expected missing")
+	}
+	if got, exp := len(state.accessList.addresses), 0; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+	if got, exp := len(state.accessList.slots), 0; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+	// Check the copy
+	// Make a copy
+	state = stateCopy1
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02")
+	if got, exp := len(state.accessList.addresses), 2; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+	if got, exp := len(state.accessList.slots), 1; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+}

core/state_processor.go

@@ -95,6 +95,18 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
 	// Create a new environment which holds all relevant information
 	// about the transaction and calling mechanisms.
 	vmenv := vm.NewEVM(context, statedb, config, cfg)
+
+	if config.IsYoloV2(header.Number) {
+		statedb.AddAddressToAccessList(msg.From())
+		if dst := msg.To(); dst != nil {
+			statedb.AddAddressToAccessList(*dst)
+			// If it's a create-tx, the destination will be added inside evm.create
+		}
+		for _, addr := range vmenv.ActivePrecompiles() {
+			statedb.AddAddressToAccessList(addr)
+		}
+	}
+
 	// Apply the transaction to the current state (included in the env)
 	result, err := ApplyMessage(vmenv, msg, gp)
 	if err != nil {

core/vm/contracts.go

@@ -78,9 +78,9 @@ var PrecompiledContractsIstanbul = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{9}): &blake2F{},
 }
 
-// PrecompiledContractsYoloV1 contains the default set of pre-compiled Ethereum
+// PrecompiledContractsYoloV2 contains the default set of pre-compiled Ethereum
-// contracts used in the Yolo v1 test release.
+// contracts used in the Yolo v2 test release.
-var PrecompiledContractsYoloV1 = map[common.Address]PrecompiledContract{
+var PrecompiledContractsYoloV2 = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{1}):  &ecrecover{},
 	common.BytesToAddress([]byte{2}):  &sha256hash{},
 	common.BytesToAddress([]byte{3}):  &ripemd160hash{},
@@ -101,6 +101,28 @@ var PrecompiledContractsYoloV1 = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{18}): &bls12381MapG2{},
 }
 
+var (
+	PrecompiledAddressesYoloV2    []common.Address
+	PrecompiledAddressesIstanbul  []common.Address
+	PrecompiledAddressesByzantium []common.Address
+	PrecompiledAddressesHomestead []common.Address
+)
+
+func init() {
+	for k := range PrecompiledContractsHomestead {
+		PrecompiledAddressesHomestead = append(PrecompiledAddressesHomestead, k)
+	}
+	for k := range PrecompiledContractsByzantium {
+		PrecompiledAddressesHomestead = append(PrecompiledAddressesByzantium, k)
+	}
+	for k := range PrecompiledContractsIstanbul {
+		PrecompiledAddressesIstanbul = append(PrecompiledAddressesIstanbul, k)
+	}
+	for k := range PrecompiledContractsYoloV2 {
+		PrecompiledAddressesYoloV2 = append(PrecompiledAddressesYoloV2, k)
+	}
+}
+
 // RunPrecompiledContract runs and evaluates the output of a precompiled contract.
 // It returns
 // - the returned bytes,

core/vm/contracts_test.go

@@ -43,7 +43,7 @@ type precompiledFailureTest struct {
 	Name          string
 }
 
-var allPrecompiles = PrecompiledContractsYoloV1
+var allPrecompiles = PrecompiledContractsYoloV2
 
 // EIP-152 test vectors
 var blake2FMalformedInputTests = []precompiledFailureTest{

core/vm/eips.go

@@ -25,6 +25,7 @@ import (
 )
 
 var activators = map[int]func(*JumpTable){
+	2929: enable2929,
 	2200: enable2200,
 	1884: enable1884,
 	1344: enable1344,
@@ -134,3 +135,41 @@ func enable2315(jt *JumpTable) {
 		jumps:       true,
 	}
 }
+
+// enable2929 enables "EIP-2929: Gas cost increases for state access opcodes"
+// https://eips.ethereum.org/EIPS/eip-2929
+func enable2929(jt *JumpTable) {
+	jt[SSTORE].dynamicGas = gasSStoreEIP2929
+
+	jt[SLOAD].constantGas = 0
+	jt[SLOAD].dynamicGas = gasSLoadEIP2929
+
+	jt[EXTCODECOPY].constantGas = WarmStorageReadCostEIP2929
+	jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929
+
+	jt[EXTCODESIZE].constantGas = WarmStorageReadCostEIP2929
+	jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck
+
+	jt[EXTCODEHASH].constantGas = WarmStorageReadCostEIP2929
+	jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck
+
+	jt[BALANCE].constantGas = WarmStorageReadCostEIP2929
+	jt[BALANCE].dynamicGas = gasEip2929AccountCheck
+
+	jt[CALL].constantGas = WarmStorageReadCostEIP2929
+	jt[CALL].dynamicGas = gasCallEIP2929
+
+	jt[CALLCODE].constantGas = WarmStorageReadCostEIP2929
+	jt[CALLCODE].dynamicGas = gasCallCodeEIP2929
+
+	jt[STATICCALL].constantGas = WarmStorageReadCostEIP2929
+	jt[STATICCALL].dynamicGas = gasStaticCallEIP2929
+
+	jt[DELEGATECALL].constantGas = WarmStorageReadCostEIP2929
+	jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP2929
+
+	// This was previously part of the dynamic cost, but we're using it as a constantGas
+	// factor here
+	jt[SELFDESTRUCT].constantGas = params.SelfdestructGasEIP150
+	jt[SELFDESTRUCT].dynamicGas = gasSelfdestructEIP2929
+}

core/vm/evm.go

@@ -42,11 +42,26 @@ type (
 	GetHashFunc func(uint64) common.Hash
 )
 
+// ActivePrecompiles returns the addresses of the precompiles enabled with the current
+// configuration
+func (evm *EVM) ActivePrecompiles() []common.Address {
+	switch {
+	case evm.chainRules.IsYoloV2:
+		return PrecompiledAddressesYoloV2
+	case evm.chainRules.IsIstanbul:
+		return PrecompiledAddressesIstanbul
+	case evm.chainRules.IsByzantium:
+		return PrecompiledAddressesByzantium
+	default:
+		return PrecompiledAddressesHomestead
+	}
+}
+
 func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) {
 	var precompiles map[common.Address]PrecompiledContract
 	switch {
-	case evm.chainRules.IsYoloV1:
+	case evm.chainRules.IsYoloV2:
-		precompiles = PrecompiledContractsYoloV1
+		precompiles = PrecompiledContractsYoloV2
 	case evm.chainRules.IsIstanbul:
 		precompiles = PrecompiledContractsIstanbul
 	case evm.chainRules.IsByzantium:
@@ -416,7 +431,11 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
 	}
 	nonce := evm.StateDB.GetNonce(caller.Address())
 	evm.StateDB.SetNonce(caller.Address(), nonce+1)
-
+	// We add this to the access list _before_ taking a snapshot. Even if the creation fails,
+	// the access-list change should not be rolled back
+	if evm.chainRules.IsYoloV2 {
+		evm.StateDB.AddAddressToAccessList(address)
+	}
 	// Ensure there's no existing contract already at the designated address
 	contractHash := evm.StateDB.GetCodeHash(address)
 	if evm.StateDB.GetNonce(address) != 0 || (contractHash != (common.Hash{}) && contractHash != emptyCodeHash) {

core/vm/interface.go

@@ -57,6 +57,15 @@ type StateDB interface {
 	// is defined according to EIP161 (balance = nonce = code = 0).
 	Empty(common.Address) bool
 
+	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
+	// even if the feature/fork is not active yet
+	AddAddressToAccessList(addr common.Address)
+	// AddSlotToAccessList adds the given (address,slot) to the access list. This operation is safe to perform
+	// even if the feature/fork is not active yet
+	AddSlotToAccessList(addr common.Address, slot common.Hash)
+
 	RevertToSnapshot(int)
 	Snapshot() int
 

core/vm/interpreter.go

@@ -99,8 +99,8 @@ func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter {
 	if cfg.JumpTable[STOP] == nil {
 		var jt JumpTable
 		switch {
-		case evm.chainRules.IsYoloV1:
+		case evm.chainRules.IsYoloV2:
-			jt = yoloV1InstructionSet
+			jt = yoloV2InstructionSet
 		case evm.chainRules.IsIstanbul:
 			jt = istanbulInstructionSet
 		case evm.chainRules.IsConstantinople:

core/vm/jump_table.go

@@ -56,17 +56,19 @@ var (
 	byzantiumInstructionSet        = newByzantiumInstructionSet()
 	constantinopleInstructionSet   = newConstantinopleInstructionSet()
 	istanbulInstructionSet         = newIstanbulInstructionSet()
-	yoloV1InstructionSet           = newYoloV1InstructionSet()
+	yoloV2InstructionSet           = newYoloV2InstructionSet()
 )
 
 // JumpTable contains the EVM opcodes supported at a given fork.
 type JumpTable [256]*operation
 
-func newYoloV1InstructionSet() JumpTable {
+// newYoloV2InstructionSet creates an instructionset containing
+// - "EIP-2315: Simple Subroutines"
+// - "EIP-2929: Gas cost increases for state access opcodes"
+func newYoloV2InstructionSet() JumpTable {
 	instructionSet := newIstanbulInstructionSet()
-
 	enable2315(&instructionSet) // Subroutines - https://eips.ethereum.org/EIPS/eip-2315
-
+	enable2929(&instructionSet) // Access lists for trie accesses https://eips.ethereum.org/EIPS/eip-2929
 	return instructionSet
 }
 

core/vm/logger.go

@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/params"
 )
 
 var errTraceLimitReached = errors.New("the number of logs reached the specified limit")
@@ -53,6 +54,8 @@ type LogConfig struct {
 	DisableReturnData bool // disable return data capture
 	Debug             bool // print output during capture end
 	Limit             int  // maximum length of output, but zero means unlimited
+	// Chain overrides, can be used to execute a trace using future fork rules
+	Overrides *params.ChainConfig `json:"overrides,omitempty"`
 }
 
 //go:generate gencodec -type StructLog -field-override structLogMarshaling -out gen_structlog.go
@@ -314,8 +317,8 @@ func (t *mdLogger) CaptureStart(from common.Address, to common.Address, create b
 	}
 
 	fmt.Fprintf(t.out, `
-|  Pc   |      Op     | Cost |   Stack   |   RStack  |
+|  Pc   |      Op     | Cost |   Stack   |   RStack  |  Refund |
-|-------|-------------|------|-----------|-----------|
+|-------|-------------|------|-----------|-----------|---------|
 `)
 	return nil
 }
@@ -327,7 +330,7 @@ func (t *mdLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64
 		// format stack
 		var a []string
 		for _, elem := range stack.data {
-			a = append(a, fmt.Sprintf("%d", elem))
+			a = append(a, fmt.Sprintf("%v", elem.String()))
 		}
 		b := fmt.Sprintf("[%v]", strings.Join(a, ","))
 		fmt.Fprintf(t.out, "%10v |", b)
@@ -340,6 +343,7 @@ func (t *mdLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64
 		b = fmt.Sprintf("[%v]", strings.Join(a, ","))
 		fmt.Fprintf(t.out, "%10v |", b)
 	}
+	fmt.Fprintf(t.out, "%10v |", env.StateDB.GetRefund())
 	fmt.Fprintln(t.out, "")
 	if err != nil {
 		fmt.Fprintf(t.out, "Error: %v\n", err)
@@ -355,11 +359,7 @@ func (t *mdLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64
 }
 
 func (t *mdLogger) CaptureEnd(output []byte, gasUsed uint64, tm time.Duration, err error) error {
-	fmt.Fprintf(t.out, `
+	fmt.Fprintf(t.out, "\nOutput: `0x%x`\nConsumed gas: `%d`\nError: `%v`\n",
-Output: 0x%x
-Consumed gas: %d
-Error: %v
-`,
 		output, gasUsed, err)
 	return nil
 }

core/vm/operations_acl.go

@@ -0,0 +1,222 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vm
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+const (
+	ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST
+	ColdSloadCostEIP2929         = uint64(2100) // COLD_SLOAD_COST
+	WarmStorageReadCostEIP2929   = uint64(100)  // WARM_STORAGE_READ_COST
+)
+
+// gasSStoreEIP2929 implements gas cost for SSTORE according to EIP-2929"
+//
+// When calling SSTORE, check if the (address, storage_key) pair is in accessed_storage_keys.
+// If it is not, charge an additional COLD_SLOAD_COST gas, and add the pair to accessed_storage_keys.
+// Additionally, modify the parameters defined in EIP 2200 as follows:
+//
+// Parameter 	Old value 	New value
+// SLOAD_GAS 	800 	= WARM_STORAGE_READ_COST
+// SSTORE_RESET_GAS 	5000 	5000 - COLD_SLOAD_COST
+//
+//The other parameters defined in EIP 2200 are unchanged.
+// see gasSStoreEIP2200(...) in core/vm/gas_table.go for more info about how EIP 2200 is specified
+func gasSStoreEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	// If we fail the minimum gas availability invariant, fail (0)
+	if contract.Gas <= params.SstoreSentryGasEIP2200 {
+		return 0, errors.New("not enough gas for reentrancy sentry")
+	}
+	// Gas sentry honoured, do the actual gas calculation based on the stored value
+	var (
+		y, x    = stack.Back(1), stack.peek()
+		slot    = common.Hash(x.Bytes32())
+		current = evm.StateDB.GetState(contract.Address(), slot)
+		cost    = uint64(0)
+	)
+	// Check slot presence in the access list
+	if addrPresent, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent {
+		cost = ColdSloadCostEIP2929
+		// If the caller cannot afford the cost, this change will be rolled back
+		evm.StateDB.AddSlotToAccessList(contract.Address(), slot)
+		if !addrPresent {
+			// Once we're done with YOLOv2 and schedule this for mainnet, might
+			// be good to remove this panic here, which is just really a
+			// canary to have during testing
+			panic("impossible case: address was not present in access list during sstore op")
+		}
+	}
+	value := common.Hash(y.Bytes32())
+
+	if current == value { // noop (1)
+		// EIP 2200 original clause:
+		//		return params.SloadGasEIP2200, nil
+		return cost + WarmStorageReadCostEIP2929, nil // SLOAD_GAS
+	}
+	original := evm.StateDB.GetCommittedState(contract.Address(), common.Hash(x.Bytes32()))
+	if original == current {
+		if original == (common.Hash{}) { // create slot (2.1.1)
+			return cost + params.SstoreSetGasEIP2200, nil
+		}
+		if value == (common.Hash{}) { // delete slot (2.1.2b)
+			evm.StateDB.AddRefund(params.SstoreClearsScheduleRefundEIP2200)
+		}
+		// EIP-2200 original clause:
+		//		return params.SstoreResetGasEIP2200, nil // write existing slot (2.1.2)
+		return cost + (params.SstoreResetGasEIP2200 - ColdSloadCostEIP2929), nil // write existing slot (2.1.2)
+	}
+	if original != (common.Hash{}) {
+		if current == (common.Hash{}) { // recreate slot (2.2.1.1)
+			evm.StateDB.SubRefund(params.SstoreClearsScheduleRefundEIP2200)
+		} else if value == (common.Hash{}) { // delete slot (2.2.1.2)
+			evm.StateDB.AddRefund(params.SstoreClearsScheduleRefundEIP2200)
+		}
+	}
+	if original == value {
+		if original == (common.Hash{}) { // reset to original inexistent slot (2.2.2.1)
+			// EIP 2200 Original clause:
+			//evm.StateDB.AddRefund(params.SstoreSetGasEIP2200 - params.SloadGasEIP2200)
+			evm.StateDB.AddRefund(params.SstoreSetGasEIP2200 - WarmStorageReadCostEIP2929)
+		} else { // reset to original existing slot (2.2.2.2)
+			// EIP 2200 Original clause:
+			//	evm.StateDB.AddRefund(params.SstoreResetGasEIP2200 - params.SloadGasEIP2200)
+			// - SSTORE_RESET_GAS redefined as (5000 - COLD_SLOAD_COST)
+			// - SLOAD_GAS redefined as WARM_STORAGE_READ_COST
+			// Final: (5000 - COLD_SLOAD_COST) - WARM_STORAGE_READ_COST
+			evm.StateDB.AddRefund((params.SstoreResetGasEIP2200 - ColdSloadCostEIP2929) - WarmStorageReadCostEIP2929)
+		}
+	}
+	// EIP-2200 original clause:
+	//return params.SloadGasEIP2200, nil // dirty update (2.2)
+	return cost + WarmStorageReadCostEIP2929, nil // dirty update (2.2)
+}
+
+// gasSLoadEIP2929 calculates dynamic gas for SLOAD according to EIP-2929
+// For SLOAD, if the (address, storage_key) pair (where address is the address of the contract
+// whose storage is being read) is not yet in accessed_storage_keys,
+// charge 2100 gas and add the pair to accessed_storage_keys.
+// If the pair is already in accessed_storage_keys, charge 100 gas.
+func gasSLoadEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	loc := stack.peek()
+	slot := common.Hash(loc.Bytes32())
+	// Check slot presence in the access list
+	if _, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent {
+		// If the caller cannot afford the cost, this change will be rolled back
+		// If he does afford it, we can skip checking the same thing later on, during execution
+		evm.StateDB.AddSlotToAccessList(contract.Address(), slot)
+		return ColdSloadCostEIP2929, nil
+	}
+	return WarmStorageReadCostEIP2929, nil
+}
+
+// gasExtCodeCopyEIP2929 implements extcodecopy according to EIP-2929
+// EIP spec:
+// > If the target is not in accessed_addresses,
+// > charge COLD_ACCOUNT_ACCESS_COST gas, and add the address to accessed_addresses.
+// > Otherwise, charge WARM_STORAGE_READ_COST gas.
+func gasExtCodeCopyEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	// memory expansion first (dynamic part of pre-2929 implementation)
+	gas, err := gasExtCodeCopy(evm, contract, stack, mem, memorySize)
+	if err != nil {
+		return 0, err
+	}
+	addr := common.Address(stack.peek().Bytes20())
+	// Check slot presence in the access list
+	if !evm.StateDB.AddressInAccessList(addr) {
+		evm.StateDB.AddAddressToAccessList(addr)
+		var overflow bool
+		// We charge (cold-warm), since 'warm' is already charged as constantGas
+		if gas, overflow = math.SafeAdd(gas, ColdAccountAccessCostEIP2929-WarmStorageReadCostEIP2929); overflow {
+			return 0, ErrGasUintOverflow
+		}
+		return gas, nil
+	}
+	return gas, nil
+}
+
+// gasEip2929AccountCheck checks whether the first stack item (as address) is present in the access list.
+// If it is, this method returns '0', otherwise 'cold-warm' gas, presuming that the opcode using it
+// is also using 'warm' as constant factor.
+// This method is used by:
+// - extcodehash,
+// - extcodesize,
+// - (ext) balance
+func gasEip2929AccountCheck(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	addr := common.Address(stack.peek().Bytes20())
+	// Check slot presence in the access list
+	if !evm.StateDB.AddressInAccessList(addr) {
+		// If the caller cannot afford the cost, this change will be rolled back
+		evm.StateDB.AddAddressToAccessList(addr)
+		// The warm storage read cost is already charged as constantGas
+		return ColdAccountAccessCostEIP2929 - WarmStorageReadCostEIP2929, nil
+	}
+	return 0, nil
+}
+
+func makeCallVariantGasCallEIP2929(oldCalculator gasFunc) gasFunc {
+	return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+		addr := common.Address(stack.Back(1).Bytes20())
+		// Check slot presence in the access list
+		if !evm.StateDB.AddressInAccessList(addr) {
+			evm.StateDB.AddAddressToAccessList(addr)
+			// The WarmStorageReadCostEIP2929 (100) is already deducted in the form of a constant cost
+			if !contract.UseGas(ColdAccountAccessCostEIP2929 - WarmStorageReadCostEIP2929) {
+				return 0, ErrOutOfGas
+			}
+		}
+		// Now call the old calculator, which takes into account
+		// - create new account
+		// - transfer value
+		// - memory expansion
+		// - 63/64ths rule
+		return oldCalculator(evm, contract, stack, mem, memorySize)
+	}
+}
+
+var (
+	gasCallEIP2929         = makeCallVariantGasCallEIP2929(gasCall)
+	gasDelegateCallEIP2929 = makeCallVariantGasCallEIP2929(gasDelegateCall)
+	gasStaticCallEIP2929   = makeCallVariantGasCallEIP2929(gasStaticCall)
+	gasCallCodeEIP2929     = makeCallVariantGasCallEIP2929(gasCallCode)
+)
+
+func gasSelfdestructEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	var (
+		gas     uint64
+		address = common.Address(stack.peek().Bytes20())
+	)
+	if !evm.StateDB.AddressInAccessList(address) {
+		// If the caller cannot afford the cost, this change will be rolled back
+		evm.StateDB.AddAddressToAccessList(address)
+		gas = ColdAccountAccessCostEIP2929
+	}
+	// if empty and transfers value
+	if evm.StateDB.Empty(address) && evm.StateDB.GetBalance(contract.Address()).Sign() != 0 {
+		gas += params.CreateBySelfdestructGas
+	}
+	if !evm.StateDB.HasSuicided(contract.Address()) {
+		evm.StateDB.AddRefund(params.SelfdestructRefundGas)
+	}
+	return gas, nil
+
+}

core/vm/runtime/runtime.go

@@ -65,7 +65,7 @@ func setDefaults(cfg *Config) {
 			PetersburgBlock:     new(big.Int),
 			IstanbulBlock:       new(big.Int),
 			MuirGlacierBlock:    new(big.Int),
-			YoloV1Block:         nil,
+			YoloV2Block:         nil,
 		}
 	}
 
@@ -113,6 +113,14 @@ func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
 		vmenv   = NewEnv(cfg)
 		sender  = vm.AccountRef(cfg.Origin)
 	)
+	if cfg.ChainConfig.IsYoloV2(vmenv.BlockNumber) {
+		cfg.State.AddAddressToAccessList(cfg.Origin)
+		cfg.State.AddAddressToAccessList(address)
+		for _, addr := range vmenv.ActivePrecompiles() {
+			cfg.State.AddAddressToAccessList(addr)
+			cfg.State.AddAddressToAccessList(addr)
+		}
+	}
 	cfg.State.CreateAccount(address)
 	// set the receiver's (the executing contract) code for execution.
 	cfg.State.SetCode(address, code)
@@ -142,6 +150,12 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
 		vmenv  = NewEnv(cfg)
 		sender = vm.AccountRef(cfg.Origin)
 	)
+	if cfg.ChainConfig.IsYoloV2(vmenv.BlockNumber) {
+		cfg.State.AddAddressToAccessList(cfg.Origin)
+		for _, addr := range vmenv.ActivePrecompiles() {
+			cfg.State.AddAddressToAccessList(addr)
+		}
+	}
 
 	// Call the code with the given configuration.
 	code, address, leftOverGas, err := vmenv.Create(
@@ -164,6 +178,14 @@ func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, er
 	vmenv := NewEnv(cfg)
 
 	sender := cfg.State.GetOrNewStateObject(cfg.Origin)
+	if cfg.ChainConfig.IsYoloV2(vmenv.BlockNumber) {
+		cfg.State.AddAddressToAccessList(cfg.Origin)
+		cfg.State.AddAddressToAccessList(address)
+		for _, addr := range vmenv.ActivePrecompiles() {
+			cfg.State.AddAddressToAccessList(addr)
+		}
+	}
+
 	// Call the code with the given configuration.
 	ret, leftOverGas, err := vmenv.Call(
 		sender,

core/vm/runtime/runtime_test.go

@@ -722,3 +722,115 @@ func BenchmarkSimpleLoop(b *testing.B) {
 	//benchmarkNonModifyingCode(10000000, staticCallIdentity, "staticcall-identity-10M", b)
 	//benchmarkNonModifyingCode(10000000, loopingCode, "loop-10M", b)
 }
+
+// TestEip2929Cases contains various testcases that are used for
+// EIP-2929 about gas repricings
+func TestEip2929Cases(t *testing.T) {
+
+	id := 1
+	prettyPrint := func(comment string, code []byte) {
+
+		instrs := make([]string, 0)
+		it := asm.NewInstructionIterator(code)
+		for it.Next() {
+			if it.Arg() != nil && 0 < len(it.Arg()) {
+				instrs = append(instrs, fmt.Sprintf("%v 0x%x", it.Op(), it.Arg()))
+			} else {
+				instrs = append(instrs, fmt.Sprintf("%v", it.Op()))
+			}
+		}
+		ops := strings.Join(instrs, ", ")
+		fmt.Printf("### Case %d\n\n", id)
+		id++
+		fmt.Printf("%v\n\nBytecode: \n```\n0x%x\n```\nOperations: \n```\n%v\n```\n\n",
+			comment,
+			code, ops)
+		Execute(code, nil, &Config{
+			EVMConfig: vm.Config{
+				Debug:     true,
+				Tracer:    vm.NewMarkdownLogger(nil, os.Stdout),
+				ExtraEips: []int{2929},
+			},
+		})
+	}
+
+	{ // First eip testcase
+		code := []byte{
+			// Three checks against a precompile
+			byte(vm.PUSH1), 1, byte(vm.EXTCODEHASH), byte(vm.POP),
+			byte(vm.PUSH1), 2, byte(vm.EXTCODESIZE), byte(vm.POP),
+			byte(vm.PUSH1), 3, byte(vm.BALANCE), byte(vm.POP),
+			// Three checks against a non-precompile
+			byte(vm.PUSH1), 0xf1, byte(vm.EXTCODEHASH), byte(vm.POP),
+			byte(vm.PUSH1), 0xf2, byte(vm.EXTCODESIZE), byte(vm.POP),
+			byte(vm.PUSH1), 0xf3, byte(vm.BALANCE), byte(vm.POP),
+			// Same three checks (should be cheaper)
+			byte(vm.PUSH1), 0xf2, byte(vm.EXTCODEHASH), byte(vm.POP),
+			byte(vm.PUSH1), 0xf3, byte(vm.EXTCODESIZE), byte(vm.POP),
+			byte(vm.PUSH1), 0xf1, byte(vm.BALANCE), byte(vm.POP),
+			// Check the origin, and the 'this'
+			byte(vm.ORIGIN), byte(vm.BALANCE), byte(vm.POP),
+			byte(vm.ADDRESS), byte(vm.BALANCE), byte(vm.POP),
+
+			byte(vm.STOP),
+		}
+		prettyPrint("This checks `EXT`(codehash,codesize,balance) of precompiles, which should be `100`, "+
+			"and later checks the same operations twice against some non-precompiles. "+
+			"Those are cheaper second time they are accessed. Lastly, it checks the `BALANCE` of `origin` and `this`.", code)
+	}
+
+	{ // EXTCODECOPY
+		code := []byte{
+			// extcodecopy( 0xff,0,0,0,0)
+			byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, //length, codeoffset, memoffset
+			byte(vm.PUSH1), 0xff, byte(vm.EXTCODECOPY),
+			// extcodecopy( 0xff,0,0,0,0)
+			byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, //length, codeoffset, memoffset
+			byte(vm.PUSH1), 0xff, byte(vm.EXTCODECOPY),
+			// extcodecopy( this,0,0,0,0)
+			byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, //length, codeoffset, memoffset
+			byte(vm.ADDRESS), byte(vm.EXTCODECOPY),
+
+			byte(vm.STOP),
+		}
+		prettyPrint("This checks `extcodecopy( 0xff,0,0,0,0)` twice, (should be expensive first time), "+
+			"and then does `extcodecopy( this,0,0,0,0)`.", code)
+	}
+
+	{ // SLOAD + SSTORE
+		code := []byte{
+
+			// Add slot `0x1` to access list
+			byte(vm.PUSH1), 0x01, byte(vm.SLOAD), byte(vm.POP), // SLOAD( 0x1) (add to access list)
+			// Write to `0x1` which is already in access list
+			byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x01, byte(vm.SSTORE), // SSTORE( loc: 0x01, val: 0x11)
+			// Write to `0x2` which is not in access list
+			byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x02, byte(vm.SSTORE), // SSTORE( loc: 0x02, val: 0x11)
+			// Write again to `0x2`
+			byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x02, byte(vm.SSTORE), // SSTORE( loc: 0x02, val: 0x11)
+			// Read slot in access list (0x2)
+			byte(vm.PUSH1), 0x02, byte(vm.SLOAD), // SLOAD( 0x2)
+			// Read slot in access list (0x1)
+			byte(vm.PUSH1), 0x01, byte(vm.SLOAD), // SLOAD( 0x1)
+		}
+		prettyPrint("This checks `sload( 0x1)` followed by `sstore(loc: 0x01, val:0x11)`, then 'naked' sstore:"+
+			"`sstore(loc: 0x02, val:0x11)` twice, and `sload(0x2)`, `sload(0x1)`. ", code)
+	}
+	{ // Call variants
+		code := []byte{
+			// identity precompile
+			byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
+			byte(vm.PUSH1), 0x04, byte(vm.PUSH1), 0x0, byte(vm.CALL), byte(vm.POP),
+
+			// random account - call 1
+			byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
+			byte(vm.PUSH1), 0xff, byte(vm.PUSH1), 0x0, byte(vm.CALL), byte(vm.POP),
+
+			// random account - call 2
+			byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
+			byte(vm.PUSH1), 0xff, byte(vm.PUSH1), 0x0, byte(vm.STATICCALL), byte(vm.POP),
+		}
+		prettyPrint("This calls the `identity`-precompile (cheap), then calls an account (expensive) and `staticcall`s the same"+
+			"account (cheap)", code)
+	}
+}

eth/api_tracer.go

@@ -38,6 +38,7 @@ import (
 	"github.com/ethereum/go-ethereum/eth/tracers"
 	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/trie"
@@ -561,9 +562,28 @@ func (api *PrivateDebugAPI) standardTraceBlockToFile(ctx context.Context, block
 
 	// Execute transaction, either tracing all or just the requested one
 	var (
-		signer = types.MakeSigner(api.eth.blockchain.Config(), block.Number())
+		signer      = types.MakeSigner(api.eth.blockchain.Config(), block.Number())
-		dumps  []string
+		dumps       []string
+		chainConfig = api.eth.blockchain.Config()
+		canon       = true
 	)
+	// Check if there are any overrides: the caller may wish to enable a future
+	// fork when executing this block. Note, such overrides are only applicable to the
+	// actual specified block, not any preceding blocks that we have to go through
+	// in order to obtain the state.
+	// Therefore, it's perfectly valid to specify `"futureForkBlock": 0`, to enable `futureFork`
+
+	if config != nil && config.Overrides != nil {
+		// Copy the config, to not screw up the main config
+		// Note: the Clique-part is _not_ deep copied
+		chainConfigCopy := new(params.ChainConfig)
+		*chainConfigCopy = *chainConfig
+		chainConfig = chainConfigCopy
+		if yolov2 := config.Overrides.YoloV2Block; yolov2 != nil {
+			chainConfig.YoloV2Block = yolov2
+			canon = false
+		}
+	}
 	for i, tx := range block.Transactions() {
 		// Prepare the trasaction for un-traced execution
 		var (
@@ -579,7 +599,9 @@ func (api *PrivateDebugAPI) standardTraceBlockToFile(ctx context.Context, block
 		if tx.Hash() == txHash || txHash == (common.Hash{}) {
 			// Generate a unique temporary file to dump it into
 			prefix := fmt.Sprintf("block_%#x-%d-%#x-", block.Hash().Bytes()[:4], i, tx.Hash().Bytes()[:4])
-
+			if !canon {
+				prefix = fmt.Sprintf("%valt-", prefix)
+			}
 			dump, err = ioutil.TempFile(os.TempDir(), prefix)
 			if err != nil {
 				return nil, err
@@ -595,7 +617,7 @@ func (api *PrivateDebugAPI) standardTraceBlockToFile(ctx context.Context, block
 			}
 		}
 		// Execute the transaction and flush any traces to disk
-		vmenv := vm.NewEVM(vmctx, statedb, api.eth.blockchain.Config(), vmConf)
+		vmenv := vm.NewEVM(vmctx, statedb, chainConfig, vmConf)
 		_, err = core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(msg.Gas()))
 		if writer != nil {
 			writer.Flush()

params/config.go

@@ -31,7 +31,8 @@ var (
 	RopstenGenesisHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d")
 	RinkebyGenesisHash = common.HexToHash("0x6341fd3daf94b748c72ced5a5b26028f2474f5f00d824504e4fa37a75767e177")
 	GoerliGenesisHash  = common.HexToHash("0xbf7e331f7f7c1dd2e05159666b3bf8bc7a8a3a9eb1d518969eab529dd9b88c1a")
-	YoloV1GenesisHash  = common.HexToHash("0xc3fd235071f24f93865b0850bd2a2119b30f7224d18a0e34c7bbf549ad7e3d36")
+	// TODO: update with yolov2 values
+	YoloV2GenesisHash = common.HexToHash("0x498a7239036dd2cd09e2bb8a80922b78632017958c332b42044c250d603a8a3e")
 )
 
 // TrustedCheckpoints associates each known checkpoint with the genesis hash of
@@ -213,9 +214,9 @@ var (
 		Threshold: 2,
 	}
 
-	// YoloV1ChainConfig contains the chain parameters to run a node on the YOLOv1 test network.
+	// YoloV2ChainConfig contains the chain parameters to run a node on the YOLOv2 test network.
-	YoloV1ChainConfig = &ChainConfig{
+	YoloV2ChainConfig = &ChainConfig{
-		ChainID:             big.NewInt(133519467574833),
+		ChainID:             big.NewInt(133519467574834),
 		HomesteadBlock:      big.NewInt(0),
 		DAOForkBlock:        nil,
 		DAOForkSupport:      true,
@@ -227,7 +228,7 @@ var (
 		PetersburgBlock:     big.NewInt(0),
 		IstanbulBlock:       big.NewInt(0),
 		MuirGlacierBlock:    nil,
-		YoloV1Block:         big.NewInt(0),
+		YoloV2Block:         big.NewInt(0),
 		Clique: &CliqueConfig{
 			Period: 15,
 			Epoch:  30000,
@@ -320,7 +321,7 @@ type ChainConfig struct {
 	IstanbulBlock       *big.Int `json:"istanbulBlock,omitempty"`       // Istanbul switch block (nil = no fork, 0 = already on istanbul)
 	MuirGlacierBlock    *big.Int `json:"muirGlacierBlock,omitempty"`    // Eip-2384 (bomb delay) switch block (nil = no fork, 0 = already activated)
 
-	YoloV1Block *big.Int `json:"yoloV1Block,omitempty"` // YOLO v1: https://github.com/ethereum/EIPs/pull/2657 (Ephemeral testnet)
+	YoloV2Block *big.Int `json:"yoloV2Block,omitempty"` // YOLO v2: Gas repricings TODO @holiman add EIP references
 	EWASMBlock  *big.Int `json:"ewasmBlock,omitempty"`  // EWASM switch block (nil = no fork, 0 = already activated)
 
 	// Various consensus engines
@@ -358,7 +359,7 @@ func (c *ChainConfig) String() string {
 	default:
 		engine = "unknown"
 	}
-	return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v, Muir Glacier: %v, YOLO v1: %v, Engine: %v}",
+	return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v, Muir Glacier: %v, YOLO v2: %v, Engine: %v}",
 		c.ChainID,
 		c.HomesteadBlock,
 		c.DAOForkBlock,
@@ -371,7 +372,7 @@ func (c *ChainConfig) String() string {
 		c.PetersburgBlock,
 		c.IstanbulBlock,
 		c.MuirGlacierBlock,
-		c.YoloV1Block,
+		c.YoloV2Block,
 		engine,
 	)
 }
@@ -428,9 +429,9 @@ func (c *ChainConfig) IsIstanbul(num *big.Int) bool {
 	return isForked(c.IstanbulBlock, num)
 }
 
-// IsYoloV1 returns whether num is either equal to the YoloV1 fork block or greater.
+// IsYoloV2 returns whether num is either equal to the YoloV1 fork block or greater.
-func (c *ChainConfig) IsYoloV1(num *big.Int) bool {
+func (c *ChainConfig) IsYoloV2(num *big.Int) bool {
-	return isForked(c.YoloV1Block, num)
+	return isForked(c.YoloV2Block, num)
 }
 
 // IsEWASM returns whether num represents a block number after the EWASM fork
@@ -476,7 +477,7 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
 		{name: "petersburgBlock", block: c.PetersburgBlock},
 		{name: "istanbulBlock", block: c.IstanbulBlock},
 		{name: "muirGlacierBlock", block: c.MuirGlacierBlock, optional: true},
-		{name: "yoloV1Block", block: c.YoloV1Block},
+		{name: "yoloV2Block", block: c.YoloV2Block},
 	} {
 		if lastFork.name != "" {
 			// Next one must be higher number
@@ -540,8 +541,8 @@ func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *Confi
 	if isForkIncompatible(c.MuirGlacierBlock, newcfg.MuirGlacierBlock, head) {
 		return newCompatError("Muir Glacier fork block", c.MuirGlacierBlock, newcfg.MuirGlacierBlock)
 	}
-	if isForkIncompatible(c.YoloV1Block, newcfg.YoloV1Block, head) {
+	if isForkIncompatible(c.YoloV2Block, newcfg.YoloV2Block, head) {
-		return newCompatError("YOLOv1 fork block", c.YoloV1Block, newcfg.YoloV1Block)
+		return newCompatError("YOLOv2 fork block", c.YoloV2Block, newcfg.YoloV2Block)
 	}
 	if isForkIncompatible(c.EWASMBlock, newcfg.EWASMBlock, head) {
 		return newCompatError("ewasm fork block", c.EWASMBlock, newcfg.EWASMBlock)
@@ -613,7 +614,7 @@ type Rules struct {
 	ChainID                                                 *big.Int
 	IsHomestead, IsEIP150, IsEIP155, IsEIP158               bool
 	IsByzantium, IsConstantinople, IsPetersburg, IsIstanbul bool
-	IsYoloV1                                                bool
+	IsYoloV2                                                bool
 }
 
 // Rules ensures c's ChainID is not nil.
@@ -632,6 +633,6 @@ func (c *ChainConfig) Rules(num *big.Int) Rules {
 		IsConstantinople: c.IsConstantinople(num),
 		IsPetersburg:     c.IsPetersburg(num),
 		IsIstanbul:       c.IsIstanbul(num),
-		IsYoloV1:         c.IsYoloV1(num),
+		IsYoloV2:         c.IsYoloV2(num),
 	}
 }

tests/init.go

@@ -141,7 +141,7 @@ var Forks = map[string]*params.ChainConfig{
 		PetersburgBlock:     big.NewInt(0),
 		IstanbulBlock:       big.NewInt(5),
 	},
-	"YOLOv1": {
+	"YOLOv2": {
 		ChainID:             big.NewInt(1),
 		HomesteadBlock:      big.NewInt(0),
 		EIP150Block:         big.NewInt(0),
@@ -151,9 +151,9 @@ var Forks = map[string]*params.ChainConfig{
 		ConstantinopleBlock: big.NewInt(0),
 		PetersburgBlock:     big.NewInt(0),
 		IstanbulBlock:       big.NewInt(0),
-		YoloV1Block:         big.NewInt(0),
+		YoloV2Block:         big.NewInt(0),
 	},
-	// This specification is subject to change, but is for now identical to YOLOv1
+	// This specification is subject to change, but is for now identical to YOLOv2
 	// for cross-client testing purposes
 	"Berlin": {
 		ChainID:             big.NewInt(1),
@@ -165,7 +165,7 @@ var Forks = map[string]*params.ChainConfig{
 		ConstantinopleBlock: big.NewInt(0),
 		PetersburgBlock:     big.NewInt(0),
 		IstanbulBlock:       big.NewInt(0),
-		YoloV1Block:         big.NewInt(0),
+		YoloV2Block:         big.NewInt(0),
 	},
 }
 

tests/state_test_util.go

@@ -186,6 +186,16 @@ func (t *StateTest) RunNoVerify(subtest StateSubtest, vmconfig vm.Config, snapsh
 	context.GetHash = vmTestBlockHash
 	evm := vm.NewEVM(context, statedb, config, vmconfig)
 
+	if config.IsYoloV2(context.BlockNumber) {
+		statedb.AddAddressToAccessList(msg.From())
+		if dst := msg.To(); dst != nil {
+			statedb.AddAddressToAccessList(*dst)
+			// If it's a create-tx, the destination will be added inside evm.create
+		}
+		for _, addr := range evm.ActivePrecompiles() {
+			statedb.AddAddressToAccessList(addr)
+		}
+	}
 	gaspool := new(core.GasPool)
 	gaspool.AddGas(block.GasLimit())
 	snapshot := statedb.Snapshot()