feat: setup configuration for upcoming hard fork and re-enable sha256 precompile (#562)

* setup configuration for upcoming hard fork

* bump version

* bump version

* enable sha256

* rename to kepler

* update

* update lint

* rename Kepler to Banach

* goimports

* reorder precompile forks

* typo

---------

Co-authored-by: Péter Garamvölgyi <peter@scroll.io>

core/vm/contracts.go

@@ -111,6 +111,20 @@ var PrecompiledContractsArchimedes = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{9}): &blake2FDisabled{},
 }
 
+// PrecompiledContractsBanach contains the default set of pre-compiled Ethereum
+// contracts used in the Banach release. Same as Archimedes but with sha256hash enabled again
+var PrecompiledContractsBanach = map[common.Address]PrecompiledContract{
+	common.BytesToAddress([]byte{1}): &ecrecover{},
+	common.BytesToAddress([]byte{2}): &sha256hash{},
+	common.BytesToAddress([]byte{3}): &ripemd160hashDisabled{},
+	common.BytesToAddress([]byte{4}): &dataCopy{},
+	common.BytesToAddress([]byte{5}): &bigModExp{eip2565: true},
+	common.BytesToAddress([]byte{6}): &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{9}): &blake2FDisabled{},
+}
+
 // PrecompiledContractsBLS contains the set of pre-compiled Ethereum
 // contracts specified in EIP-2537. These are exported for testing purposes.
 var PrecompiledContractsBLS = map[common.Address]PrecompiledContract{
@@ -126,6 +140,7 @@ var PrecompiledContractsBLS = map[common.Address]PrecompiledContract{
 }
 
 var (
+	PrecompiledAddressesBanach     []common.Address
 	PrecompiledAddressesArchimedes []common.Address
 	PrecompiledAddressesBerlin     []common.Address
 	PrecompiledAddressesIstanbul   []common.Address
@@ -149,11 +164,16 @@ func init() {
 	for k := range PrecompiledContractsArchimedes {
 		PrecompiledAddressesArchimedes = append(PrecompiledAddressesArchimedes, k)
 	}
+	for k := range PrecompiledContractsBanach {
+		PrecompiledAddressesBanach = append(PrecompiledAddressesBanach, k)
+	}
 }
 
 // ActivePrecompiles returns the precompiles enabled with the current configuration.
 func ActivePrecompiles(rules params.Rules) []common.Address {
 	switch {
+	case rules.IsBanach:
+		return PrecompiledAddressesBanach
 	case rules.IsArchimedes:
 		return PrecompiledAddressesArchimedes
 	case rules.IsBerlin:
@@ -309,9 +329,10 @@ var (
 // modexpMultComplexity implements bigModexp multComplexity formula, as defined in EIP-198
 //
 // def mult_complexity(x):
-//    if x <= 64: return x ** 2
+//
-//    elif x <= 1024: return x ** 2 // 4 + 96 * x - 3072
+//	if x <= 64: return x ** 2
-//    else: return x ** 2 // 16 + 480 * x - 199680
+//	elif x <= 1024: return x ** 2 // 4 + 96 * x - 3072
+//	else: return x ** 2 // 16 + 480 * x - 199680
 //
 // where is x is max(length_of_MODULUS, length_of_BASE)
 func modexpMultComplexity(x *big.Int) *big.Int {

core/vm/evm.go

@@ -46,6 +46,8 @@ type (
 func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) {
 	var precompiles map[common.Address]PrecompiledContract
 	switch {
+	case evm.chainRules.IsBanach:
+		precompiles = PrecompiledContractsBanach
 	case evm.chainRules.IsArchimedes:
 		precompiles = PrecompiledContractsArchimedes
 	case evm.chainRules.IsBerlin:

core/vm/runtime/runtime.go

@@ -69,6 +69,7 @@ func setDefaults(cfg *Config) {
 			BerlinBlock:         new(big.Int),
 			LondonBlock:         new(big.Int),
 			ArchimedesBlock:     new(big.Int),
+			BanachBlock:         new(big.Int),
 		}
 	}
 

params/config.go

@@ -279,6 +279,7 @@ var (
 		ArrowGlacierBlock:   nil,
 		ArchimedesBlock:     big.NewInt(2646311),
 		ShanghaiBlock:       nil,
+		BanachBlock:         nil,
 		Clique: &CliqueConfig{
 			Period: 3,
 			Epoch:  30000,
@@ -317,6 +318,7 @@ var (
 		ArrowGlacierBlock:   nil,
 		ArchimedesBlock:     big.NewInt(0),
 		ShanghaiBlock:       big.NewInt(0),
+		BanachBlock:         nil,
 		Clique: &CliqueConfig{
 			Period: 3,
 			Epoch:  30000,
@@ -355,6 +357,7 @@ var (
 		ArrowGlacierBlock:   nil,
 		ArchimedesBlock:     big.NewInt(0),
 		ShanghaiBlock:       big.NewInt(0),
+		BanachBlock:         nil,
 		Clique: &CliqueConfig{
 			Period: 3,
 			Epoch:  30000,
@@ -380,7 +383,7 @@ var (
 	//
 	// This configuration is intentionally not using keyed fields to force anyone
 	// adding flags to the config to also have to set these fields.
-	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil,
+	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, new(EthashConfig), nil,
 		ScrollConfig{
 			UseZktrie:                 false,
 			FeeVaultAddress:           nil,
@@ -396,7 +399,7 @@ var (
 	//
 	// This configuration is intentionally not using keyed fields to force anyone
 	// adding flags to the config to also have to set these fields.
-	AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, nil, &CliqueConfig{Period: 0, Epoch: 30000},
+	AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, nil, nil, &CliqueConfig{Period: 0, Epoch: 30000},
 		ScrollConfig{
 			UseZktrie:                 false,
 			FeeVaultAddress:           nil,
@@ -407,7 +410,7 @@ var (
 			L1Config:                  &L1Config{5, common.HexToAddress("0x0000000000000000000000000000000000000000"), 0, common.HexToAddress("0x0000000000000000000000000000000000000000")},
 		}}
 
-	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil,
+	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, new(EthashConfig), nil,
 		ScrollConfig{
 			UseZktrie:                 false,
 			FeeVaultAddress:           &common.Address{123},
@@ -419,7 +422,7 @@ var (
 		}}
 	TestRules = TestChainConfig.Rules(new(big.Int))
 
-	TestNoL1DataFeeChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil,
+	TestNoL1DataFeeChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, new(EthashConfig), nil,
 		ScrollConfig{
 			UseZktrie:                 false,
 			FeeVaultAddress:           nil,
@@ -509,6 +512,7 @@ type ChainConfig struct {
 	ArrowGlacierBlock   *big.Int `json:"arrowGlacierBlock,omitempty"`   // Eip-4345 (bomb delay) switch block (nil = no fork, 0 = already activated)
 	ArchimedesBlock     *big.Int `json:"archimedesBlock,omitempty"`     // Archimedes switch block (nil = no fork, 0 = already on archimedes)
 	ShanghaiBlock       *big.Int `json:"shanghaiBlock,omitempty"`       // Shanghai switch block (nil = no fork, 0 = already on shanghai)
+	BanachBlock         *big.Int `json:"banachBlock,omitempty"`         // Banach switch block (nil = no fork, 0 = already on banach)
 
 	// TerminalTotalDifficulty is the amount of total difficulty reached by
 	// the network that triggers the consensus upgrade.
@@ -634,7 +638,7 @@ 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, Berlin: %v, London: %v, Arrow Glacier: %v, Archimedes: %v, Shanghai: %v, Engine: %v, Scroll config: %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, Berlin: %v, London: %v, Arrow Glacier: %v, Archimedes: %v, Shanghai: %v, Banach: %v, Engine: %v, Scroll config: %v}",
 		c.ChainID,
 		c.HomesteadBlock,
 		c.DAOForkBlock,
@@ -652,6 +656,7 @@ func (c *ChainConfig) String() string {
 		c.ArrowGlacierBlock,
 		c.ArchimedesBlock,
 		c.ShanghaiBlock,
+		c.BanachBlock,
 		engine,
 		c.Scroll,
 	)
@@ -734,6 +739,11 @@ func (c *ChainConfig) IsShanghai(num *big.Int) bool {
 	return isForked(c.ShanghaiBlock, num)
 }
 
+// IsBanach returns whether num is either equal to the Banach fork block or greater.
+func (c *ChainConfig) IsBanach(num *big.Int) bool {
+	return isForked(c.BanachBlock, num)
+}
+
 // IsTerminalPoWBlock returns whether the given block is the last block of PoW stage.
 func (c *ChainConfig) IsTerminalPoWBlock(parentTotalDiff *big.Int, totalDiff *big.Int) bool {
 	if c.TerminalTotalDifficulty == nil {
@@ -785,6 +795,7 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
 		{name: "arrowGlacierBlock", block: c.ArrowGlacierBlock, optional: true},
 		{name: "archimedesBlock", block: c.ArchimedesBlock, optional: true},
 		{name: "shanghaiBlock", block: c.ShanghaiBlock, optional: true},
+		{name: "banachBlock", block: c.BanachBlock, optional: true},
 	} {
 		if lastFork.name != "" {
 			// Next one must be higher number
@@ -863,6 +874,9 @@ func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *Confi
 	if isForkIncompatible(c.ShanghaiBlock, newcfg.ShanghaiBlock, head) {
 		return newCompatError("Shanghai fork block", c.ShanghaiBlock, newcfg.ShanghaiBlock)
 	}
+	if isForkIncompatible(c.BanachBlock, newcfg.BanachBlock, head) {
+		return newCompatError("Hard fork block", c.BanachBlock, newcfg.BanachBlock)
+	}
 	return nil
 }
 
@@ -931,6 +945,7 @@ type Rules struct {
 	IsHomestead, IsEIP150, IsEIP155, IsEIP158               bool
 	IsByzantium, IsConstantinople, IsPetersburg, IsIstanbul bool
 	IsBerlin, IsLondon, IsArchimedes, IsShanghai            bool
+	IsBanach                                                bool
 }
 
 // Rules ensures c's ChainID is not nil.
@@ -953,5 +968,6 @@ func (c *ChainConfig) Rules(num *big.Int) Rules {
 		IsLondon:         c.IsLondon(num),
 		IsArchimedes:     c.IsArchimedes(num),
 		IsShanghai:       c.IsShanghai(num),
+		IsBanach:         c.IsBanach(num),
 	}
 }

params/version.go

@@ -24,7 +24,7 @@ import (
 const (
 	VersionMajor = 5         // Major version component of the current release
 	VersionMinor = 1         // Minor version component of the current release
-	VersionPatch = 15        // Patch version component of the current release
+	VersionPatch = 16        // Patch version component of the current release
 	VersionMeta  = "mainnet" // Version metadata to append to the version string
 )
 

tests/init.go

@@ -213,6 +213,23 @@ var Forks = map[string]*params.ChainConfig{
 		ArrowGlacierBlock:   big.NewInt(0),
 		ArchimedesBlock:     big.NewInt(0),
 	},
+	"Banach": {
+		ChainID:             big.NewInt(1),
+		HomesteadBlock:      big.NewInt(0),
+		EIP150Block:         big.NewInt(0),
+		EIP155Block:         big.NewInt(0),
+		EIP158Block:         big.NewInt(0),
+		ByzantiumBlock:      big.NewInt(0),
+		ConstantinopleBlock: big.NewInt(0),
+		PetersburgBlock:     big.NewInt(0),
+		IstanbulBlock:       big.NewInt(0),
+		MuirGlacierBlock:    big.NewInt(0),
+		BerlinBlock:         big.NewInt(0),
+		LondonBlock:         big.NewInt(0),
+		ArrowGlacierBlock:   big.NewInt(0),
+		ArchimedesBlock:     big.NewInt(0),
+		BanachBlock:         big.NewInt(0),
+	},
 }
 
 // Returns the set of defined fork names