PIP-30: increased max code size limit to 32KB (#1310)

* PIP-30: increased max code size limit to 32KB

* fixed tests

core/vm/evm.go

@@ -495,8 +495,14 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
 	ret, err := evm.interpreter.PreRun(contract, nil, false, nil)
 
 	// Check whether the max code size has been exceeded, assign err if the case.
-	if err == nil && evm.chainRules.IsEIP158 && len(ret) > params.MaxCodeSize {
-		err = ErrMaxCodeSizeExceeded
+	if err == nil && evm.chainRules.IsEIP158 {
+		if evm.chainConfig.Bor != nil && evm.chainConfig.Bor.IsAhmedabad(evm.Context.BlockNumber) {
+			if len(ret) > params.MaxCodeSizePostAhmedabad {
+				err = ErrMaxCodeSizeExceeded
+			}
+		} else if len(ret) > params.MaxCodeSize {
+			err = ErrMaxCodeSizeExceeded
+		}
 	}
 
 	// Reject code starting with 0xEF if EIP-3541 is enabled.

params/config.go

@@ -618,6 +618,7 @@ type BorConfig struct {
 	DelhiBlock                 *big.Int               `json:"delhiBlock"`                 // Delhi switch block (nil = no fork, 0 = already on delhi)
 	IndoreBlock                *big.Int               `json:"indoreBlock"`                // Indore switch block (nil = no fork, 0 = already on indore)
 	StateSyncConfirmationDelay map[string]uint64      `json:"stateSyncConfirmationDelay"` // StateSync Confirmation Delay, in seconds, to calculate `to`
+	AhmedabadBlock             *big.Int               `json:"ahmedabadBlock"`             // Ahmedabad switch block (nil = no fork, 0 = already on ahmedabad)
 }
 
 // String implements the stringer interface, returning the consensus engine details.
@@ -657,6 +658,10 @@ func (c *BorConfig) CalculateStateSyncDelay(number uint64) uint64 {
 	return borKeyValueConfigHelper(c.StateSyncConfirmationDelay, number)
 }
 
+func (c *BorConfig) IsAhmedabad(number *big.Int) bool {
+	return isBlockForked(c.AhmedabadBlock, number)
+}
+
 // // TODO: modify this function once the block number is finalized
 // func (c *BorConfig) IsNapoli(number *big.Int) bool {
 // 	if c.NapoliBlock != nil {

params/protocol_params.go

@@ -133,8 +133,9 @@ const (
 	DefaultBaseFeeChangeDenominator = 8 // Bounds the amount the base fee can change between blocks.
 	DefaultElasticityMultiplier     = 2 // Bounds the maximum gas limit an EIP-1559 block may have.
 
-	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