[Polygon] Bor: PIP-30: increased max code size limit to 32KB [For Eri…

…gon-2] (#11811) [Polygon] Bor: [PIP-30: increased max code size limit to 32KB](https://github.com/maticnetwork/Polygon-Improvement-Proposals/blob/main/PIPs/PIP-30.md)
erigontech · Aug 30, 2024 · e62c2fd · e62c2fd
1 parent fec000b
commit e62c2fd
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Showing 4 changed files with 17 additions and 3 deletions.
diff --git a/core/vm/evm.go b/core/vm/evm.go
@@ -421,7 +421,7 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gasRemainin
 	ret, err = run(evm, contract, nil, false)
 
 	// EIP-170: Contract code size limit
-	if err == nil && evm.chainRules.IsSpuriousDragon && len(ret) > params.MaxCodeSize {
+	if err == nil && evm.chainRules.IsSpuriousDragon && len(ret) > evm.maxCodeSize() {
 		// Gnosis Chain prior to Shanghai didn't have EIP-170 enabled,
 		// but EIP-3860 (part of Shanghai) requires EIP-170.
 		if !evm.chainRules.IsAura || evm.config.HasEip3860(evm.chainRules) {
@@ -462,6 +462,13 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gasRemainin
 	return ret, address, contract.Gas, err
 }
 
+func (evm *EVM) maxCodeSize() int {
+	if evm.chainConfig.Bor != nil && evm.chainConfig.Bor.IsAhmedabad(evm.Context.BlockNumber) {
+		return params.MaxCodeSizePostAhmedabad
+	}
+	return params.MaxCodeSize
+}
+
 // Create creates a new contract using code as deployment code.
 // DESCRIBED: docs/programmers_guide/guide.md#nonce
 func (evm *EVM) Create(caller ContractRef, code []byte, gasRemaining uint64, endowment *uint256.Int, bailout bool) (ret []byte, contractAddr libcommon.Address, leftOverGas uint64, err error) {

diff --git a/erigon-lib/chain/chain_config.go b/erigon-lib/chain/chain_config.go
@@ -98,6 +98,7 @@ type BorConfig interface {
 	GetAgraBlock() *big.Int
 	IsNapoli(num uint64) bool
 	GetNapoliBlock() *big.Int
+	IsAhmedabad(number uint64) bool
 }
 
 func (c *Config) String() string {

diff --git a/params/protocol_params.go b/params/protocol_params.go
@@ -127,8 +127,9 @@ const (
 	ElasticityMultiplier              = 2          // Bounds the maximum gas limit an EIP-1559 block may have.
 	InitialBaseFee                    = 1000000000 // Initial base fee for EIP-1559 blocks.
 
-	MaxCodeSize     = 24576           // Maximum bytecode to permit for a contract
-	MaxInitCodeSize = 2 * MaxCodeSize // Maximum initcode to permit in a creation transaction and create instructions
+	MaxCodeSize              = 24576           // Maximum bytecode to permit for a contract
+	MaxCodeSizePostAhmedabad = 32768           // Maximum bytecode to permit for a contract post Ahmedabad hard fork (bor / polygon pos) (32KB)
+	MaxInitCodeSize          = 2 * MaxCodeSize // Maximum initcode to permit in a creation transaction and create instructions
 
 	// Precompiled contract gas prices
 

diff --git a/polygon/bor/borcfg/bor_config.go b/polygon/bor/borcfg/bor_config.go
@@ -25,6 +25,7 @@ type BorConfig struct {
 	IndoreBlock                *big.Int          `json:"indoreBlock"`                // Indore switch block (nil = no fork, 0 = already on Indore)
 	AgraBlock                  *big.Int          `json:"agraBlock"`                  // Agra switch block (nil = no fork, 0 = already on Agra)
 	NapoliBlock                *big.Int          `json:"napoliBlock"`                // Napoli switch block (nil = no fork, 0 = already on Napoli)
+	AhmedabadBlock             *big.Int          `json:"ahmedabadBlock"`             // Ahmedabad switch block (nil = no fork, 0 = already on Ahmedabad)
 	StateSyncConfirmationDelay map[string]uint64 `json:"stateSyncConfirmationDelay"` // StateSync Confirmation Delay, in seconds, to calculate `to`
 
 	sprints sprints
@@ -130,6 +131,10 @@ func (c *BorConfig) IsNapoli(num uint64) bool {
 	return isForked(c.NapoliBlock, num)
 }
 
+func (c *BorConfig) IsAhmedabad(number uint64) bool {
+	return isForked(c.AhmedabadBlock, number)
+}
+
 func (c *BorConfig) GetNapoliBlock() *big.Int {
 	return c.NapoliBlock
 }