cmd/hivechain: add modLargeReceipt

cmd/hivechain/contracts.go

@@ -29,6 +29,9 @@ var emitCode []byte
 //go:embed bytecode/7702account.bin
 var mod7702AccountCode []byte
 
+//go:embed bytecode/largelogs.bin
+var modLargeReceiptCode []byte
+
 // //go:embed bytecode/deposit.bin
 // var depositCode []byte
 //

cmd/hivechain/contracts/largelogs.eas

@@ -0,0 +1,8 @@
+;;; -*- mode: asm -*-
+;;; outputs a single large log event
+
+#pragma target "frontier"
+
+    push 190000
+    push 0
+    log0

cmd/hivechain/genesis.go

@@ -135,7 +135,7 @@ func (cfg *generatorConfig) createGenesis() *core.Genesis {
 	// Block attributes.
 	g.Difficulty = cfg.genesisDifficulty()
 	g.ExtraData = []byte("hivechain")
-	g.GasLimit = params.GenesisGasLimit * 8
+	g.GasLimit = 300_000_000
 	zero := new(big.Int)
 	if g.Config.IsLondon(zero) {
 		g.BaseFee = big.NewInt(genesisBaseFee)

cmd/hivechain/mod_largereceipt.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+func init() {
+	register("tx-largereceipt", func() blockModifier {
+		// Gas parameters here are calculated to create a block with > 10MB of receipts.
+		const logCost = 1607055
+		const pushCost = 10
+		return &modLargeReceipt{
+			gasLimit: logCost + pushCost + params.TxGasContractCreation + params.TxDataNonZeroGasEIP2028*8,
+			txCount:  56,
+		}
+	})
+}
+
+// modLargeReceipt creates blocks with large receipts. It emits multiple transactions
+// within a single block, where each transaction has a single log with large data.
+type modLargeReceipt struct {
+	didRun   bool
+	gasLimit uint64 // gas of single transaction
+	txCount  uint64 // number of transactions added to block
+	block    uint64 // block number where txs were included
+}
+
+func (m *modLargeReceipt) apply(ctx *genBlockContext) bool {
+	if m.didRun || !ctx.HasGas(m.gasLimit*m.txCount) {
+		return false
+	}
+
+	sender := ctx.TxSenderAccount()
+	for range m.txCount {
+		ctx.AddNewTx(sender, &types.LegacyTx{
+			Nonce:    ctx.AccountNonce(sender.addr),
+			Gas:      m.gasLimit,
+			GasPrice: ctx.TxGasFeeCap(),
+			Data:     modLargeReceiptCode,
+		})
+	}
+	m.block = ctx.NumberU64()
+	m.didRun = true
+	return true
+}
+
+// txInfo is just the block number that has the receipts.
+func (m *modLargeReceipt) txInfo() any {
+	if m.didRun {
+		return m.block
+	}
+	return nil
+}