feat: add implementation of OpSelfdestruct

fhevm/instructions.go

@@ -4,11 +4,13 @@ import (
 	"bytes"
 	"encoding/hex"
 	"errors"
+	"math/big"
 	"strings"
 
 	"github.com/ethereum/go-ethereum/common"
 	crypto "github.com/ethereum/go-ethereum/crypto"
 	"github.com/holiman/uint256"
+	fhevm_crypto "github.com/zama-ai/fhevm-go/crypto"
 	ps "github.com/zama-ai/fhevm-go/crypto"
 )
 
@@ -352,3 +354,14 @@ func OpReturn(pc *uint64, env EVMEnvironment, scope ScopeContext) []byte {
 	delegateCiphertextHandlesToCaller(env, ret)
 	return ret
 }
+
+func OpSelfdestruct(pc *uint64, env EVMEnvironment, scope ScopeContext) (beneficiary uint256.Int, balance *big.Int) {
+	beneficiary = scope.GetStack().Pop()
+	protectedStorage := fhevm_crypto.CreateProtectedStorageContractAddress(scope.GetContract().Address())
+	balance = env.GetBalance(scope.GetContract().Address())
+	balance.Add(balance, env.GetBalance(protectedStorage))
+	env.AddBalance(beneficiary.Bytes20(), balance)
+	env.Suicide(scope.GetContract().Address())
+	env.Suicide(protectedStorage)
+	return
+}

fhevm/interface.go

@@ -12,6 +12,10 @@ type EVMEnvironment interface {
 	GetState(common.Address, common.Hash) common.Hash
 	SetState(common.Address, common.Hash, common.Hash)
 	GetNonce(common.Address) uint64
+	AddBalance(common.Address, *big.Int)
+	GetBalance(common.Address) *big.Int
+
+	Suicide(common.Address) bool
 
 	// EVM call stack depth
 	GetDepth() int