cmd, core, eth, miner: apply 7997 in block building (#35285)

This PR applies the 7997 irregular state transition in t8n, block
building, simulation and tracing.

cmd/evm/internal/t8ntool/execution.go

@@ -242,6 +242,13 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
 		chainConfig.DAOForkBlock.Cmp(new(big.Int).SetUint64(pre.Env.Number)) == 0 {
 		misc.ApplyDAOHardFork(statedb)
 	}
+	// EIP-7997: insert the deterministic deployment factory at the Amsterdam
+	// activation block via an irregular state transition.
+	if pre.Env.Number > 0 &&
+		chainConfig.IsAmsterdam(new(big.Int).SetUint64(pre.Env.Number), pre.Env.Timestamp) &&
+		!chainConfig.IsAmsterdam(new(big.Int).SetUint64(pre.Env.Number-1), pre.Env.ParentTimestamp) {
+		misc.ApplyEIP7997(statedb)
+	}
 	evm := vm.NewEVM(vmContext, statedb, chainConfig, vmConfig)
 	if beaconRoot := pre.Env.ParentBeaconBlockRoot; beaconRoot != nil {
 		core.ProcessBeaconBlockRoot(*beaconRoot, evm, blockAccessList)

core/state_processor.go

@@ -81,10 +81,9 @@ func (p *StateProcessor) Process(ctx context.Context, block *types.Block, stated
 	if config.DAOForkSupport && config.DAOForkBlock != nil && config.DAOForkBlock.Cmp(block.Number()) == 0 {
 		misc.ApplyDAOHardFork(tracingStateDB)
 	}
-	// EIP-7997: insert the deterministic deployment factory at the Amsterdam
+	parent := p.chain.GetHeader(block.ParentHash(), block.NumberU64()-1)
-	// activation block via an irregular state transition.
+	if parent == nil {
-	if isEIP7997Transition(config, p.chain, header) {
+		return nil, fmt.Errorf("missing parent %#x", block.ParentHash())
-		misc.ApplyEIP7997(tracingStateDB)
 	}
 	var (
 		context         = NewEVMBlockContext(header, p.chain, nil)
@@ -98,7 +97,7 @@ func (p *StateProcessor) Process(ctx context.Context, block *types.Block, stated
 		evm.SetJumpDestCache(jumpDestCache)
 	}
 	// Run the pre-execution system calls
-	blockAccessList.Merge(PreExecution(ctx, block.BeaconRoot(), block.ParentHash(), config, evm, block.Number(), block.Time()))
+	blockAccessList.Merge(PreExecution(ctx, block.BeaconRoot(), parent, config, evm, block.Number(), block.Time()))
 
 	// Iterate over and process the individual transactions
 	for i, tx := range block.Transactions() {
@@ -142,27 +141,20 @@ func (p *StateProcessor) Process(ctx context.Context, block *types.Block, stated
 	}, nil
 }
 
-// isEIP7997Transition reports whether the given header belongs to the first block
+// PreExecution processes pre-execution state changes and system calls.
-// on which the Amsterdam fork is active.
+func PreExecution(ctx context.Context, beaconRoot *common.Hash, parent *types.Header, config *params.ChainConfig, evm *vm.EVM, number *big.Int, time uint64) *bal.ConstructionBlockAccessList {
-func isEIP7997Transition(config *params.ChainConfig, chain ChainContext, header *types.Header) bool {
-	if header.Number.Sign() == 0 || !config.IsAmsterdam(header.Number, header.Time) {
-		return false
-	}
-	parent := chain.GetHeader(header.ParentHash, header.Number.Uint64()-1)
-	if parent == nil {
-		return false
-	}
-	return !config.IsAmsterdam(parent.Number, parent.Time)
-}
-
-// PreExecution processes pre-execution system calls.
-func PreExecution(ctx context.Context, beaconRoot *common.Hash, parent common.Hash, config *params.ChainConfig, evm *vm.EVM, number *big.Int, time uint64) *bal.ConstructionBlockAccessList {
 	_, _, spanEnd := telemetry.StartSpan(ctx, "core.preExecution")
 	defer spanEnd(nil)
 
 	var blockAccessList *bal.ConstructionBlockAccessList
 	if config.IsAmsterdam(number, time) {
 		blockAccessList = bal.NewConstructionBlockAccessList()
+
+		// EIP-7997: insert the deterministic deployment factory at the Amsterdam
+		// activation block via an irregular state transition.
+		if !config.IsAmsterdam(parent.Number, parent.Time) {
+			misc.ApplyEIP7997(evm.StateDB)
+		}
 	}
 	// EIP-4788
 	if beaconRoot != nil {
@@ -170,7 +162,7 @@ func PreExecution(ctx context.Context, beaconRoot *common.Hash, parent common.Ha
 	}
 	// EIP-2935
 	if config.IsPrague(number, time) || config.IsUBT(number, time) {
-		ProcessParentBlockHash(parent, evm, blockAccessList)
+		ProcessParentBlockHash(parent.Hash(), evm, blockAccessList)
 	}
 	return blockAccessList
 }

eth/state_accessor.go

@@ -250,7 +250,7 @@ func (eth *Ethereum) stateAtTransaction(ctx context.Context, block *types.Block,
 	defer evm.Release()
 
 	// Run pre-execution system calls
-	core.PreExecution(ctx, block.BeaconRoot(), block.ParentHash(), eth.blockchain.Config(), evm, block.Number(), block.Time())
+	core.PreExecution(ctx, block.BeaconRoot(), parent.Header(), eth.blockchain.Config(), evm, block.Number(), block.Time())
 
 	if txIndex == 0 && len(block.Transactions()) == 0 {
 		return nil, context, statedb, release, nil

eth/tracers/api.go

@@ -373,7 +373,7 @@ func (api *API) traceChain(start, end *types.Block, config *TraceConfig, closed
 			context := core.NewEVMBlockContext(next.Header(), api.chainContext(ctx), nil)
 			evm := vm.NewEVM(context, statedb, api.backend.ChainConfig(), vm.Config{})
 
-			core.PreExecution(ctx, next.BeaconRoot(), next.ParentHash(), api.backend.ChainConfig(), evm, next.Number(), next.Time())
+			core.PreExecution(ctx, next.BeaconRoot(), block.Header(), api.backend.ChainConfig(), evm, next.Number(), next.Time())
 			evm.Release()
 			// Clean out any pending release functions of trace state. Note this
 			// step must be done after constructing tracing state, because the
@@ -523,7 +523,7 @@ func (api *API) IntermediateRoots(ctx context.Context, hash common.Hash, config
 	)
 	defer evm.Release()
 	// Run pre-execution system calls
-	core.PreExecution(ctx, block.BeaconRoot(), block.ParentHash(), chainConfig, evm, block.Number(), block.Time())
+	core.PreExecution(ctx, block.BeaconRoot(), parent.Header(), chainConfig, evm, block.Number(), block.Time())
 
 	for i, tx := range block.Transactions() {
 		if err := ctx.Err(); err != nil {
@@ -582,7 +582,7 @@ func (api *API) traceBlock(ctx context.Context, block *types.Block, config *Trac
 	defer evm.Release()
 
 	// Run pre-execution system calls
-	core.PreExecution(ctx, block.BeaconRoot(), block.ParentHash(), api.backend.ChainConfig(), evm, block.Number(), block.Time())
+	core.PreExecution(ctx, block.BeaconRoot(), parent.Header(), api.backend.ChainConfig(), evm, block.Number(), block.Time())
 
 	// JS tracers have high overhead. In this case run a parallel
 	// process that generates states in one thread and traces txes
@@ -754,7 +754,7 @@ func (api *API) standardTraceBlockToFile(ctx context.Context, block *types.Block
 	defer evm.Release()
 
 	// Run pre-execution system calls
-	core.PreExecution(ctx, block.BeaconRoot(), block.ParentHash(), chainConfig, evm, block.Number(), block.Time())
+	core.PreExecution(ctx, block.BeaconRoot(), parent.Header(), chainConfig, evm, block.Number(), block.Time())
 
 	for i, tx := range block.Transactions() {
 		// Prepare the transaction for un-traced execution

internal/ethapi/simulate.go

@@ -322,7 +322,7 @@ func (sim *simulator) processBlock(ctx context.Context, block *simBlock, header,
 		evm.SetPrecompiles(precompiles)
 	}
 	// Run pre-execution system calls
-	blockAccessList.Merge(core.PreExecution(ctx, header.ParentBeaconRoot, header.ParentHash, sim.chainConfig, evm, header.Number, header.Time))
+	blockAccessList.Merge(core.PreExecution(ctx, header.ParentBeaconRoot, parent, sim.chainConfig, evm, header.Number, header.Time))
 
 	var allLogs []*types.Log
 	for i, call := range block.Calls {

miner/payload_building_test.go

@@ -17,6 +17,7 @@
 package miner
 
 import (
+	"bytes"
 	"context"
 	"math/big"
 	"reflect"
@@ -26,6 +27,7 @@ import (
 	"github.com/ethereum/go-ethereum/beacon/engine"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/consensus/beacon"
 	"github.com/ethereum/go-ethereum/consensus/clique"
 	"github.com/ethereum/go-ethereum/consensus/ethash"
 	"github.com/ethereum/go-ethereum/core"
@@ -115,6 +117,7 @@ func newTestWorkerBackend(t *testing.T, chainConfig *params.ChainConfig, engine
 		copy(gspec.ExtraData[32:32+common.AddressLength], testBankAddress.Bytes())
 		e.Authorize(testBankAddress)
 	case *ethash.Ethash:
+	case *beacon.Beacon:
 	default:
 		t.Fatalf("unexpected consensus engine type: %T", engine)
 	}
@@ -194,6 +197,58 @@ func TestBuildPayload(t *testing.T) {
 	}
 }
 
+// TestBuildPayloadAmsterdamTransition verifies that a locally built payload for
+// the first Amsterdam block contains the EIP-7997 deterministic deployment
+// factory, i.e. the block-building path applies the same irregular state
+// transition as block processing and the resulting block is importable.
+func TestBuildPayloadAmsterdamTransition(t *testing.T) {
+	var (
+		db        = rawdb.NewMemoryDatabase()
+		recipient = common.HexToAddress("0xdeadbeef")
+	)
+	config := new(params.ChainConfig)
+	*config = *params.MergedTestChainConfig
+	config.AmsterdamTime = new(uint64)
+	*config.AmsterdamTime = 1 // genesis (t=0) is pre-Amsterdam, the first block crosses the fork
+
+	w, b := newTestWorker(t, config, beacon.New(ethash.NewFaker()), db, 0)
+
+	var (
+		beaconRoot = common.Hash{0x01}
+		slotNum    = uint64(1)
+	)
+	payload, err := w.buildPayload(context.Background(), &BuildPayloadArgs{
+		Parent:       b.chain.CurrentBlock().Hash(),
+		Timestamp:    1,
+		FeeRecipient: recipient,
+		Withdrawals:  types.Withdrawals{},
+		BeaconRoot:   &beaconRoot,
+		SlotNum:      &slotNum,
+	}, false)
+	if err != nil {
+		t.Fatalf("Failed to build payload %v", err)
+	}
+	block := payload.empty
+	if !config.IsAmsterdam(block.Number(), block.Time()) {
+		t.Fatal("transition block is not an Amsterdam block")
+	}
+	// The block must be importable: Process applies EIP-7997 independently, so
+	// a payload built without the factory would fail the state root check here.
+	if _, err := b.chain.InsertChain(types.Blocks{block}); err != nil {
+		t.Fatalf("failed to insert transition block: %v", err)
+	}
+	statedb, err := b.chain.StateAt(block.Header())
+	if err != nil {
+		t.Fatalf("failed to open state at transition block: %v", err)
+	}
+	if code := statedb.GetCode(params.DeterministicFactoryAddress); !bytes.Equal(code, params.DeterministicFactoryCode) {
+		t.Fatalf("factory code missing from built payload state:\n got %x\nwant %x", code, params.DeterministicFactoryCode)
+	}
+	if nonce := statedb.GetNonce(params.DeterministicFactoryAddress); nonce != 1 {
+		t.Fatalf("factory nonce = %d, want 1", nonce)
+	}
+}
+
 func TestPayloadId(t *testing.T) {
 	t.Parallel()
 	ids := make(map[string]int)

miner/worker.go

@@ -326,7 +326,7 @@ func (miner *Miner) prepareWork(ctx context.Context, genParams *generateParams,
 		return nil, err
 	}
 	// Run pre-execution system calls
-	env.bal.Merge(core.PreExecution(ctx, header.ParentBeaconRoot, header.ParentHash, miner.chainConfig, env.evm, header.Number, header.Time))
+	env.bal.Merge(core.PreExecution(ctx, header.ParentBeaconRoot, parent, miner.chainConfig, env.evm, header.Number, header.Time))
 	return env, nil
 }