core: implement BLOBBASEFEE opcode (0x4a) (#28098)

Implements "EIP-7516: BLOBBASEFEE opcode" for cancun, as per spec: https://eips.ethereum.org/EIPS/eip-7516

core/vm/runtime/env.go

@@ -37,6 +37,7 @@ func NewEnv(cfg *Config) *vm.EVM {
 		Difficulty:  cfg.Difficulty,
 		GasLimit:    cfg.GasLimit,
 		BaseFee:     cfg.BaseFee,
+		BlobBaseFee: cfg.BlobBaseFee,
 		Random:      cfg.Random,
 	}
 

core/vm/runtime/runtime.go

@@ -44,6 +44,7 @@ type Config struct {
 	Debug       bool
 	EVMConfig   vm.Config
 	BaseFee     *big.Int
+	BlobBaseFee *big.Int
 	BlobHashes  []common.Hash
 	Random      *common.Hash
 
@@ -95,6 +96,9 @@ func setDefaults(cfg *Config) {
 	if cfg.BaseFee == nil {
 		cfg.BaseFee = big.NewInt(params.InitialBaseFee)
 	}
+	if cfg.BlobBaseFee == nil {
+		cfg.BlobBaseFee = new(big.Int)
+	}
 }
 
 // Execute executes the code using the input as call data during the execution.