Merge pull request #536 from XinFinOrg/dev-upgrade

Monthly Merge Dev-Upgrade to Master Branch: May

.github/workflows/ci.yml

@@ -80,21 +80,27 @@ jobs:
     runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/dev-upgrade' && !startsWith(github.ref, 'refs/tags/')
     needs: tests
+    outputs:
+      output1: ${{ steps.docker.outputs.image_name }}
     steps:
       - uses: actions/checkout@v4
       - name: Login to Docker Hub
         run: echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
       - name: Build and Push Docker images
+        id: docker
         run: |
           git_hash=$(git rev-parse --short "$GITHUB_SHA")
+          image_name=xinfinorg/devnet:dev-upgrade-${git_hash}
           docker pull xinfinorg/devnet:latest
           docker tag xinfinorg/devnet:latest xinfinorg/devnet:previous
           docker rmi xinfinorg/devnet:latest
           docker build -t xinfinorg/devnet:latest -f cicd/Dockerfile .
-          docker tag xinfinorg/devnet:latest xinfinorg/devnet:dev-upgrade-${git_hash}
-          docker push xinfinorg/devnet:dev-upgrade-${git_hash}
+          docker tag xinfinorg/devnet:latest $image_name
+          docker push $image_name
           docker push xinfinorg/devnet:latest
           docker push xinfinorg/devnet:previous
+          echo "image_name=$image_name"
+          echo "image_name=$image_name" >> "$GITHUB_OUTPUT"
 
   devnet_terraform_apply:
     runs-on: ubuntu-latest
@@ -142,6 +148,17 @@ jobs:
           terraform init ${{ env.tf_init_cli_options }}
           terraform apply ${{ env.tf_apply_cli_options }}
 
+      - name: Update RPC nodes image
+        uses: dawidd6/action-ansible-playbook@v2
+        with:
+          playbook: playbooks/update-image.yaml
+          directory: ./cicd/ansible
+          key: ${{secrets.SSH_PRIVATE_KEY_DEVNET}}
+          options: |
+            --inventory inventory.yaml
+            --extra-vars network=ec2_rpcs
+            --extra-vars rpc_image=${{ needs.devnet_build_push.outputs.output1 }}
+
   devnet_dev-upgrade_node:
     runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/dev-upgrade' && !startsWith(github.ref, 'refs/tags/')

.github/workflows/deploy_rpc_image.yml

@@ -0,0 +1,41 @@
+name: Deploy RPC Image
+on:
+  #need to make sure only authorized people can use this function
+  workflow_dispatch:
+    inputs:
+      network:
+        type: choice
+        description: 'devnet, testnet, or mainnet'
+        options: 
+          - devnet
+          - testnet
+          - mainnet
+      rpc_image:
+        description: 'full image name'
+      
+jobs:
+  ansible:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Update RPC nodes image
+        uses: dawidd6/action-ansible-playbook@v2
+        with:
+          playbook: playbooks/update-image.yaml
+          directory: ./cicd/ansible
+          key: ${{secrets.SSH_PRIVATE_KEY_DEVNET}}
+          options: |
+            --inventory inventory.yaml
+            --extra-vars network=${{inputs.network}}
+            --extra-vars rpc_image=${{inputs.rpc_image}}
+
+  devnet_send_notification:
+    runs-on: ubuntu-latest
+    needs: ansible
+    steps:
+      - uses: actions/checkout@v4
+      - name: Send deployment notification
+        run: |
+          curl --location --request POST "66.94.98.186:8080/deploy?environment=${{inputs.network}}&service=xdc_rpc&version=${{inputs.rpc_image}}"
+  

XDCx/XDCx.go

@@ -9,14 +9,13 @@ import (
 
 	"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
 	"github.com/XinFinOrg/XDPoSChain/XDCxDAO"
-	"github.com/XinFinOrg/XDPoSChain/consensus"
-	"github.com/XinFinOrg/XDPoSChain/core/types"
-	"github.com/XinFinOrg/XDPoSChain/p2p"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
-
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/prque"
+	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
+	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/log"
+	"github.com/XinFinOrg/XDPoSChain/p2p"
 	"github.com/XinFinOrg/XDPoSChain/rpc"
 	lru "github.com/hashicorp/golang-lru"
 	"golang.org/x/sync/syncmap"
@@ -105,7 +104,7 @@ func New(cfg *Config) *XDCX {
 	}
 	XDCX := &XDCX{
 		orderNonce:        make(map[common.Address]*big.Int),
-		Triegc:            prque.New(),
+		Triegc:            prque.New(nil),
 		tokenDecimalCache: tokenDecimalCache,
 		orderCache:        orderCache,
 	}

XDCxlending/XDCxlending.go

@@ -12,14 +12,13 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
 	"github.com/XinFinOrg/XDPoSChain/XDCxDAO"
 	"github.com/XinFinOrg/XDPoSChain/XDCxlending/lendingstate"
-	"github.com/XinFinOrg/XDPoSChain/consensus"
-	"github.com/XinFinOrg/XDPoSChain/core/types"
-	"github.com/XinFinOrg/XDPoSChain/p2p"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
-
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/prque"
+	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
+	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/log"
+	"github.com/XinFinOrg/XDPoSChain/p2p"
 	"github.com/XinFinOrg/XDPoSChain/rpc"
 	lru "github.com/hashicorp/golang-lru"
 )
@@ -67,7 +66,7 @@ func New(XDCx *XDCx.XDCX) *Lending {
 	lendingTradeCache, _ := lru.New(defaultCacheLimit)
 	lending := &Lending{
 		orderNonce:          make(map[common.Address]*big.Int),
-		Triegc:              prque.New(),
+		Triegc:              prque.New(nil),
 		lendingItemHistory:  itemCache,
 		lendingTradeHistory: lendingTradeCache,
 	}

accounts/abi/bind/backends/simulated.go

@@ -25,11 +25,9 @@ import (
 	"sync"
 	"time"
 
+	"github.com/XinFinOrg/XDPoSChain"
 	"github.com/XinFinOrg/XDPoSChain/XDCx"
 	"github.com/XinFinOrg/XDPoSChain/XDCxlending"
-	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
-
-	"github.com/XinFinOrg/XDPoSChain"
 	"github.com/XinFinOrg/XDPoSChain/accounts"
 	"github.com/XinFinOrg/XDPoSChain/accounts/abi/bind"
 	"github.com/XinFinOrg/XDPoSChain/accounts/keystore"
@@ -37,10 +35,10 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/common/math"
 	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
 	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
-
 	"github.com/XinFinOrg/XDPoSChain/consensus/ethash"
 	"github.com/XinFinOrg/XDPoSChain/core"
 	"github.com/XinFinOrg/XDPoSChain/core/bloombits"
+	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/core/vm"
@@ -365,7 +363,7 @@ func (b *SimulatedBackend) callContract(ctx context.Context, call XDPoSChain.Cal
 	from := statedb.GetOrNewStateObject(call.From)
 	from.SetBalance(math.MaxBig256)
 	// Execute the call.
-	msg := callmsg{call}
+	msg := callMsg{call}
 	feeCapacity := state.GetTRC21FeeCapacityFromState(statedb)
 	if msg.To() != nil {
 		if value, ok := feeCapacity[*msg.To()]; ok {
@@ -388,7 +386,10 @@ func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transa
 	b.mu.Lock()
 	defer b.mu.Unlock()
 
-	sender, err := types.Sender(types.HomesteadSigner{}, tx)
+	// Check transaction validity.
+	block := b.blockchain.CurrentBlock()
+	signer := types.MakeSigner(b.blockchain.Config(), block.Number())
+	sender, err := types.Sender(signer, tx)
 	if err != nil {
 		panic(fmt.Errorf("invalid transaction: %v", err))
 	}
@@ -397,7 +398,8 @@ func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transa
 		panic(fmt.Errorf("invalid transaction nonce: got %d, want %d", tx.Nonce(), nonce))
 	}
 
-	blocks, _ := core.GenerateChain(b.config, b.blockchain.CurrentBlock(), b.blockchain.Engine(), b.database, 1, func(number int, block *core.BlockGen) {
+	// Include tx in chain.
+	blocks, _ := core.GenerateChain(b.config, block, b.blockchain.Engine(), b.database, 1, func(number int, block *core.BlockGen) {
 		for _, tx := range b.pendingBlock.Transactions() {
 			block.AddTxWithChain(b.blockchain, tx)
 		}
@@ -501,20 +503,21 @@ func (b *SimulatedBackend) GetBlockChain() *core.BlockChain {
 	return b.blockchain
 }
 
-// callmsg implements core.Message to allow passing it as a transaction simulator.
-type callmsg struct {
+// callMsg implements core.Message to allow passing it as a transaction simulator.
+type callMsg struct {
 	XDPoSChain.CallMsg
 }
 
-func (m callmsg) From() common.Address      { return m.CallMsg.From }
-func (m callmsg) Nonce() uint64             { return 0 }
-func (m callmsg) CheckNonce() bool          { return false }
-func (m callmsg) To() *common.Address       { return m.CallMsg.To }
-func (m callmsg) GasPrice() *big.Int        { return m.CallMsg.GasPrice }
-func (m callmsg) Gas() uint64               { return m.CallMsg.Gas }
-func (m callmsg) Value() *big.Int           { return m.CallMsg.Value }
-func (m callmsg) Data() []byte              { return m.CallMsg.Data }
-func (m callmsg) BalanceTokenFee() *big.Int { return m.CallMsg.BalanceTokenFee }
+func (m callMsg) From() common.Address         { return m.CallMsg.From }
+func (m callMsg) Nonce() uint64                { return 0 }
+func (m callMsg) CheckNonce() bool             { return false }
+func (m callMsg) To() *common.Address          { return m.CallMsg.To }
+func (m callMsg) GasPrice() *big.Int           { return m.CallMsg.GasPrice }
+func (m callMsg) Gas() uint64                  { return m.CallMsg.Gas }
+func (m callMsg) Value() *big.Int              { return m.CallMsg.Value }
+func (m callMsg) Data() []byte                 { return m.CallMsg.Data }
+func (m callMsg) BalanceTokenFee() *big.Int    { return m.CallMsg.BalanceTokenFee }
+func (m callMsg) AccessList() types.AccessList { return m.CallMsg.AccessList }
 
 // filterBackend implements filters.Backend to support filtering for logs without
 // taking bloom-bits acceleration structures into account.
@@ -553,7 +556,7 @@ func (fb *filterBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*ty
 	return logs, nil
 }
 
-func (fb *filterBackend) SubscribeTxPreEvent(ch chan<- core.TxPreEvent) event.Subscription {
+func (fb *filterBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		<-quit
 		return nil

accounts/accounts.go

@@ -18,12 +18,14 @@
 package accounts
 
 import (
+	"fmt"
 	"math/big"
 
 	ethereum "github.com/XinFinOrg/XDPoSChain"
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/event"
+	"golang.org/x/crypto/sha3"
 )
 
 // Account represents an Ethereum account located at a specific location defined
@@ -148,6 +150,34 @@ type Backend interface {
 	Subscribe(sink chan<- WalletEvent) event.Subscription
 }
 
+// TextHash is a helper function that calculates a hash for the given message that can be
+// safely used to calculate a signature from.
+//
+// The hash is calulcated as
+//
+//	keccak256("\x19Ethereum Signed Message:\n"${message length}${message}).
+//
+// This gives context to the signed message and prevents signing of transactions.
+func TextHash(data []byte) []byte {
+	hash, _ := TextAndHash(data)
+	return hash
+}
+
+// TextAndHash is a helper function that calculates a hash for the given message that can be
+// safely used to calculate a signature from.
+//
+// The hash is calulcated as
+//
+//	keccak256("\x19Ethereum Signed Message:\n"${message length}${message}).
+//
+// This gives context to the signed message and prevents signing of transactions.
+func TextAndHash(data []byte) ([]byte, string) {
+	msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), string(data))
+	hasher := sha3.NewLegacyKeccak256()
+	hasher.Write([]byte(msg))
+	return hasher.Sum(nil), msg
+}
+
 // WalletEventType represents the different event types that can be fired by
 // the wallet subscription subsystem.
 type WalletEventType int

accounts/keystore/keystore.go

@@ -288,11 +288,9 @@ func (ks *KeyStore) SignTx(a accounts.Account, tx *types.Transaction, chainID *b
 	if !found {
 		return nil, ErrLocked
 	}
-	// Depending on the presence of the chain ID, sign with EIP155 or homestead
-	if chainID != nil {
-		return types.SignTx(tx, types.NewEIP155Signer(chainID), unlockedKey.PrivateKey)
-	}
-	return types.SignTx(tx, types.HomesteadSigner{}, unlockedKey.PrivateKey)
+	// Depending on the presence of the chain ID, sign with 2718 or homestead
+	signer := types.LatestSignerForChainID(chainID)
+	return types.SignTx(tx, signer, unlockedKey.PrivateKey)
 }
 
 // SignHashWithPassphrase signs hash if the private key matching the given address
@@ -316,11 +314,9 @@ func (ks *KeyStore) SignTxWithPassphrase(a accounts.Account, passphrase string,
 	}
 	defer zeroKey(key.PrivateKey)
 
-	// Depending on the presence of the chain ID, sign with EIP155 or homestead
-	if chainID != nil {
-		return types.SignTx(tx, types.NewEIP155Signer(chainID), key.PrivateKey)
-	}
-	return types.SignTx(tx, types.HomesteadSigner{}, key.PrivateKey)
+	// Depending on the presence of the chain ID, sign with or without replay protection.
+	signer := types.LatestSignerForChainID(chainID)
+	return types.SignTx(tx, signer, key.PrivateKey)
 }
 
 // Unlock unlocks the given account indefinitely.

accounts/usbwallet/trezor.go

@@ -27,13 +27,13 @@ import (
 	"io"
 	"math/big"
 
-	"github.com/golang/protobuf/proto"
 	"github.com/XinFinOrg/XDPoSChain/accounts"
 	"github.com/XinFinOrg/XDPoSChain/accounts/usbwallet/internal/trezor"
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/log"
+	"github.com/golang/protobuf/proto"
 )
 
 // ErrTrezorPINNeeded is returned if opening the trezor requires a PIN code. In
@@ -80,13 +80,13 @@ func (w *trezorDriver) Status() (string, error) {
 
 // Open implements usbwallet.driver, attempting to initialize the connection to
 // the Trezor hardware wallet. Initializing the Trezor is a two phase operation:
-//  * The first phase is to initialize the connection and read the wallet's
-//    features. This phase is invoked is the provided passphrase is empty. The
-//    device will display the pinpad as a result and will return an appropriate
-//    error to notify the user that a second open phase is needed.
-//  * The second phase is to unlock access to the Trezor, which is done by the
-//    user actually providing a passphrase mapping a keyboard keypad to the pin
-//    number of the user (shuffled according to the pinpad displayed).
+//   - The first phase is to initialize the connection and read the wallet's
+//     features. This phase is invoked is the provided passphrase is empty. The
+//     device will display the pinpad as a result and will return an appropriate
+//     error to notify the user that a second open phase is needed.
+//   - The second phase is to unlock access to the Trezor, which is done by the
+//     user actually providing a passphrase mapping a keyboard keypad to the pin
+//     number of the user (shuffled according to the pinpad displayed).
 func (w *trezorDriver) Open(device io.ReadWriter, passphrase string) error {
 	w.device, w.failure = device, nil
 
@@ -220,9 +220,11 @@ func (w *trezorDriver) trezorSign(derivationPath []uint32, tx *types.Transaction
 	if chainID == nil {
 		signer = new(types.HomesteadSigner)
 	} else {
+		// Trezor backend does not support typed transactions yet.
 		signer = types.NewEIP155Signer(chainID)
 		signature[64] = signature[64] - byte(chainID.Uint64()*2+35)
 	}
+
 	// Inject the final signature into the transaction and sanity check the sender
 	signed, err := tx.WithSignature(signer, signature)
 	if err != nil {

cicd/ansible/inventory.yaml

@@ -0,0 +1,17 @@
+ec2_rpcs:
+  hosts:
+    devnet:
+      ansible_host: devnet.hashlabs.apothem.network
+      ansible_port: 22
+      ansible_user: ec2-user
+      deploy_path: /work/XinFin-Node/devnet
+    testnet:
+      ansible_host: testnet.hashlabs.apothem.network
+      ansible_port: 22
+      ansible_user: ec2-user
+      deploy_path: /work/XinFin-Node/testnet
+    mainnet:
+      ansible_host: mainnet.hashlabs.apothem.network
+      ansible_port: 22
+      ansible_user: ec2-user
+      deploy_path: /work/XinFin-Node/mainnet

cicd/ansible/playbooks/update-image.yaml

@@ -0,0 +1,15 @@
+---
+- name: Run Bash Script on Host
+  hosts: "{{ network }}"
+  become: true  #sudo/root
+
+  tasks:
+    - name: Update RPC image version
+      shell: |
+        export RPC_IMAGE={{ rpc_image }}
+        cd {{ deploy_path }}
+        ./docker-down.sh
+        ./docker-up-hash.sh
+        docker ps
+      register: output
+    - debug: var=output.stdout_lines

cicd/devnet/start.sh

@@ -81,5 +81,5 @@ XDC --ethstats ${netstats} --gcmode archive \
 --rpcvhosts "*" --unlock "${wallet}" --password /work/.pwd --mine \
 --gasprice "1" --targetgaslimit "420000000" --verbosity ${log_level} \
 --debugdatadir /work/xdcchain \
---enable-0x-prefix --ws --wsaddr=0.0.0.0 --wsport $ws_port \
+--ws --wsaddr=0.0.0.0 --wsport $ws_port \
 --wsorigins "*" 2>&1 >>/work/xdcchain/xdc.log | tee -a /work/xdcchain/xdc.log

cicd/mainnet/start.sh

@@ -80,5 +80,5 @@ XDC --ethstats ${netstats} --gcmode archive \
 --rpcvhosts "*" --unlock "${wallet}" --password /work/.pwd --mine \
 --gasprice "1" --targetgaslimit "420000000" --verbosity ${log_level} \
 --debugdatadir /work/xdcchain \
---enable-0x-prefix --ws --wsaddr=0.0.0.0 --wsport $ws_port \
+--ws --wsaddr=0.0.0.0 --wsport $ws_port \
 --wsorigins "*" 2>&1 >>/work/xdcchain/xdc.log | tee -a /work/xdcchain/xdc.log

cicd/terraform/.env

@@ -10,4 +10,4 @@ eu_west_1_end=72
 
 # Sydney
 ap_southeast_2_start=73
-ap_southeast_2_end=108
+ap_southeast_2_end=108

cicd/terraform/main.tf

@@ -76,3 +76,48 @@ module "mainnet-rpc" {
   }
 }
 
+
+module "devnet_rpc" {
+  source = "./module/ec2_rpc"
+  network = "devnet"
+  vpc_id = local.vpc_id
+  aws_subnet_id = local.aws_subnet_id
+  ami_id = local.ami_id
+  instance_type = "t3.large"
+  ssh_key_name = local.ssh_key_name
+  rpc_image = local.rpc_image 
+
+  providers = {
+    aws = aws.ap-southeast-1
+  }
+}
+
+module "testnet_rpc" {
+  source = "./module/ec2_rpc"
+  network = "testnet"
+  vpc_id = local.vpc_id
+  aws_subnet_id = local.aws_subnet_id
+  ami_id = local.ami_id
+  instance_type = "t3.large"
+  ssh_key_name = local.ssh_key_name
+  rpc_image = local.rpc_image 
+
+  providers = {
+    aws = aws.ap-southeast-1
+  }
+}
+
+module "mainnet_rpc" {
+  source = "./module/ec2_rpc"
+  network = "mainnet"
+  vpc_id = local.vpc_id
+  aws_subnet_id = local.aws_subnet_id
+  ami_id = local.ami_id
+  instance_type = "t3.large"
+  ssh_key_name = local.ssh_key_name
+  rpc_image = local.rpc_image 
+
+  providers = {
+    aws = aws.ap-southeast-1
+  }
+}

cicd/terraform/module/ec2_rpc/main.tf

@@ -0,0 +1,106 @@
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.13.1"
+    }
+  }
+}
+variable network {
+  type = string
+}
+variable vpc_id {
+  type = string
+}
+variable aws_subnet_id {
+  type = string
+}
+variable ami_id {
+  type = string
+}
+variable instance_type {
+  type = string
+}
+variable ssh_key_name {
+  type = string
+}
+variable rpc_image {
+  type = string
+}
+
+resource "aws_security_group" "rpc_sg" {
+  name_prefix = "${var.network}_rpc_sg"
+
+  ingress {
+    from_port   = 22
+    to_port     = 22
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+  
+  ingress {
+    from_port   = 30303
+    to_port     = 30303
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  ingress {
+    from_port   = 8545
+    to_port     = 8545
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  ingress {
+    from_port   = 8555
+    to_port     = 8555
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  egress {
+    from_port   = 0
+    to_port     = 0
+    protocol    = "-1"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+}
+
+resource "aws_instance" "rpc_instance" {
+  instance_type           = var.instance_type 
+  ami                     = var.ami_id
+  tags                    = {
+                              Name = var.network
+                            }
+  key_name                = var.ssh_key_name
+  vpc_security_group_ids  = [aws_security_group.rpc_sg.id]
+  ebs_block_device {
+    device_name = "/dev/xvda"
+    volume_size = 500
+  }
+
+
+  #below still need to remove git checkout {{branch}} after files merged to master
+  user_data = <<-EOF
+              #!/bin/bash
+              sudo yum update -y
+              sudo yum upgrade -y
+              sudo yum install git -y
+              sudo yum install docker -y
+              mkdir -p /root/.docker/cli-plugins
+              curl -SL https://github.com/docker/compose/releases/download/v2.25.0/docker-compose-linux-x86_64 -o /root/.docker/cli-plugins/docker-compose
+              sudo chmod +x /root/.docker/cli-plugins/docker-compose
+              echo checking compose version
+              docker compose version
+              sudo systemctl enable docker
+              sudo systemctl start docker
+              mkdir -p /work
+              cd /work
+              git clone https://github.com/XinFinOrg/XinFin-Node
+              cd /work/XinFin-Node/${var.network}
+              export RPC_IMAGE="${var.rpc_image}"
+              echo RPC_IMAGE=$RPC_IMAGE
+              ./docker-up-hash.sh
+              EOF
+}

cicd/terraform/variables.tf

@@ -34,3 +34,11 @@ locals {
     rpcTestnetNodeKeys = { "testnet-rpc1": local.predefinedNodesConfig["testnet-rpc1"]} // we hardcode the rpc to a single node for now
     rpcMainnetNodeKeys = { "mainnet-rpc1": local.predefinedNodesConfig["mainnet-rpc1"]} // we hardcode the rpc to a single node for now
 }
+
+locals { //ec2_rpc values
+  ami_id = "ami-097c4e1feeea169e5"
+  rpc_image = "xinfinorg/xdposchain:v2.2.0-beta1"
+  vpc_id = "vpc-20a06846"
+  aws_subnet_id = "subnet-4653ee20"
+  ssh_key_name = "devnetkey"
+}

cicd/testnet/start.sh

@@ -82,5 +82,5 @@ XDC --ethstats ${netstats} --gcmode archive \
 --rpcvhosts "*" --unlock "${wallet}" --password /work/.pwd --mine \
 --gasprice "1" --targetgaslimit "420000000" --verbosity ${log_level} \
 --debugdatadir /work/xdcchain \
---enable-0x-prefix --ws --wsaddr=0.0.0.0 --wsport $ws_port \
+--ws --wsaddr=0.0.0.0 --wsport $ws_port \
 --wsorigins "*" 2>&1 >>/work/xdcchain/xdc.log | tee -a /work/xdcchain/xdc.log

cmd/XDC/config.go

@@ -164,8 +164,8 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, XDCConfig) {
 		common.TIPXDCXCancellationFee = common.TIPXDCXCancellationFeeTestnet
 	}
 
-	if ctx.GlobalBool(utils.Enable0xPrefixFlag.Name) {
-		common.Enable0xPrefix = true
+	if ctx.GlobalBool(utils.EnableXDCPrefixFlag.Name) {
+		common.Enable0xPrefix = false
 	}
 
 	// Rewound

cmd/XDC/consolecmd_test.go

@@ -38,7 +38,7 @@ const (
 // Tests that a node embedded within a console can be started up properly and
 // then terminated by closing the input stream.
 func TestConsoleWelcome(t *testing.T) {
-	coinbase := "xdc8605cdbbdb6d264aa742e77020dcbc58fcdce182"
+	coinbase := "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 
 	// Start a XDC console, make sure it's cleaned up and terminate the console
 	XDC := runXDC(t,
@@ -75,7 +75,7 @@ at block: 0 ({{niltime}})
 // Tests that a console can be attached to a running node via various means.
 func TestIPCAttachWelcome(t *testing.T) {
 	// Configure the instance for IPC attachement
-	coinbase := "xdc8605cdbbdb6d264aa742e77020dcbc58fcdce182"
+	coinbase := "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 	var ipc string
 	if runtime.GOOS == "windows" {
 		ipc = `\\.\pipe\XDC` + strconv.Itoa(trulyRandInt(100000, 999999))
@@ -97,7 +97,7 @@ func TestIPCAttachWelcome(t *testing.T) {
 }
 
 func TestHTTPAttachWelcome(t *testing.T) {
-	coinbase := "xdc8605cdbbdb6d264aa742e77020dcbc58fcdce182"
+	coinbase := "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 	port := strconv.Itoa(trulyRandInt(1024, 65536)) // Yeah, sometimes this will fail, sorry :P
 	XDC := runXDC(t,
 		"--XDCx.datadir", tmpdir(t)+"XDCx/"+time.Now().String(),
@@ -112,7 +112,7 @@ func TestHTTPAttachWelcome(t *testing.T) {
 }
 
 func TestWSAttachWelcome(t *testing.T) {
-	coinbase := "xdc8605cdbbdb6d264aa742e77020dcbc58fcdce182"
+	coinbase := "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 	port := strconv.Itoa(trulyRandInt(1024, 65536)) // Yeah, sometimes this will fail, sorry :P
 
 	XDC := runXDC(t,

cmd/XDC/main.go

@@ -114,6 +114,7 @@ var (
 		//utils.VMEnableDebugFlag,
 		utils.XDCTestnetFlag,
 		utils.Enable0xPrefixFlag,
+		utils.EnableXDCPrefixFlag,
 		utils.RewoundFlag,
 		utils.NetworkIdFlag,
 		utils.RPCCORSDomainFlag,

cmd/evm/json_logger.go

@@ -33,15 +33,23 @@ type JSONLogger struct {
 }
 
 func NewJSONLogger(cfg *vm.LogConfig, writer io.Writer) *JSONLogger {
-	return &JSONLogger{json.NewEncoder(writer), cfg}
+	l := &JSONLogger{json.NewEncoder(writer), cfg}
+	if l.cfg == nil {
+		l.cfg = &vm.LogConfig{}
+	}
+	return l
 }
 
-func (l *JSONLogger) CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) error {
-	return nil
+func (l *JSONLogger) CaptureStart(env *vm.EVM, from, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+}
+
+func (l *JSONLogger) CaptureFault(*vm.EVM, uint64, vm.OpCode, uint64, uint64, *vm.ScopeContext, int, error) {
 }
 
 // CaptureState outputs state information on the logger.
-func (l *JSONLogger) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error {
+func (l *JSONLogger) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
+	memory := scope.Memory
+	stack := scope.Stack
 	log := vm.StructLog{
 		Pc:         pc,
 		Op:         op,
@@ -63,24 +71,20 @@ func (l *JSONLogger) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cos
 		}
 		log.Stack = logstack
 	}
-	return l.encoder.Encode(log)
-}
-
-// CaptureFault outputs state information on the logger.
-func (l *JSONLogger) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error {
-	return nil
+	l.encoder.Encode(log)
 }
 
 // CaptureEnd is triggered at end of execution.
-func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error {
+func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {
 	type endLog struct {
 		Output  string              `json:"output"`
 		GasUsed math.HexOrDecimal64 `json:"gasUsed"`
 		Time    time.Duration       `json:"time"`
 		Err     string              `json:"error,omitempty"`
 	}
+	var errMsg string
 	if err != nil {
-		return l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, err.Error()})
+		errMsg = err.Error()
 	}
-	return l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, ""})
+	l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, errMsg})
 }

cmd/puppeth/wizard_genesis.go

@@ -145,8 +145,8 @@ func (w *wizard) makeGenesis() {
 		genesis.Config.XDPoS.V2.CurrentConfig.TimeoutSyncThreshold = w.readDefaultInt(3)
 
 		fmt.Println()
-		fmt.Printf("How many v2 vote collection to generate a QC, should be two thirds of masternodes? (default = %f)\n", 0.666)
-		genesis.Config.XDPoS.V2.CurrentConfig.CertThreshold = w.readDefaultFloat(0.666)
+		fmt.Printf("Proportion of total masternodes v2 vote collection to generate a QC (float value), should be two thirds of masternodes? (default = %f)\n", 0.667)
+		genesis.Config.XDPoS.V2.CurrentConfig.CertThreshold = w.readDefaultFloat(0.667)
 
 		genesis.Config.XDPoS.V2.AllConfigs[0] = genesis.Config.XDPoS.V2.CurrentConfig
 

cmd/utils/flags.go

@@ -117,7 +117,11 @@ var (
 	}
 	Enable0xPrefixFlag = cli.BoolFlag{
 		Name:  "enable-0x-prefix",
-		Usage: "Addres use 0x-prefix (default = false)",
+		Usage: "Addres use 0x-prefix (Deprecated: this is on by default, to use xdc prefix use --enable-xdc-prefix)",
+	}
+	EnableXDCPrefixFlag = cli.BoolFlag{
+		Name:  "enable-xdc-prefix",
+		Usage: "Addres use xdc-prefix (default = false)",
 	}
 	// General settings
 	AnnounceTxsFlag = cli.BoolFlag{
@@ -354,6 +358,11 @@ var (
 		Name:  "vmdebug",
 		Usage: "Record information useful for VM and contract debugging",
 	}
+	RPCGlobalGasCapFlag = cli.Uint64Flag{
+		Name:  "rpc.gascap",
+		Usage: "Sets a cap on gas that can be used in eth_call/estimateGas (0=infinite)",
+		Value: eth.DefaultConfig.RPCGasCap,
+	}
 	// Logging and debug settings
 	EthStatsURLFlag = cli.StringFlag{
 		Name:  "ethstats",
@@ -786,6 +795,10 @@ func setIPC(ctx *cli.Context, cfg *node.Config) {
 	}
 }
 
+func setPrefix(ctx *cli.Context, cfg *node.Config) {
+	checkExclusive(ctx, Enable0xPrefixFlag, EnableXDCPrefixFlag)
+}
+
 // MakeDatabaseHandles raises out the number of allowed file handles per process
 // for XDC and returns half of the allowance to assign to the database.
 func MakeDatabaseHandles() int {
@@ -933,6 +946,7 @@ func SetNodeConfig(ctx *cli.Context, cfg *node.Config) {
 	setHTTP(ctx, cfg)
 	setWS(ctx, cfg)
 	setNodeUserIdent(ctx, cfg)
+	setPrefix(ctx, cfg)
 
 	switch {
 	case ctx.GlobalIsSet(DataDirFlag.Name):
@@ -1167,6 +1181,11 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 		// TODO(fjl): force-enable this in --dev mode
 		cfg.EnablePreimageRecording = ctx.GlobalBool(VMEnableDebugFlag.Name)
 	}
+	if cfg.RPCGasCap != 0 {
+		log.Info("Set global gas cap", "cap", cfg.RPCGasCap)
+	} else {
+		log.Info("Global gas cap disabled")
+	}
 	if ctx.GlobalIsSet(StoreRewardFlag.Name) {
 		common.StoreRewardFolder = filepath.Join(stack.DataDir(), "XDC", "rewards")
 		if _, err := os.Stat(common.StoreRewardFolder); os.IsNotExist(err) {

cmd/wnode/main.go

@@ -139,8 +139,8 @@ func processArgs() {
 	}
 
 	if *asymmetricMode && len(*argPub) > 0 {
-		pub = crypto.ToECDSAPub(common.FromHex(*argPub))
-		if !isKeyValid(pub) {
+		var err error
+		if pub, err = crypto.UnmarshalPubkey(common.FromHex(*argPub)); err != nil {
 			utils.Fatalf("invalid public key")
 		}
 	}
@@ -337,9 +337,8 @@ func configureNode() {
 			if b == nil {
 				utils.Fatalf("Error: can not convert hexadecimal string")
 			}
-			pub = crypto.ToECDSAPub(b)
-			if !isKeyValid(pub) {
-				utils.Fatalf("Error: invalid public key")
+			if pub, err = crypto.UnmarshalPubkey(b); err != nil {
+				utils.Fatalf("Error: invalid peer public key")
 			}
 		}
 	}

common/constants.go

@@ -45,6 +45,9 @@ var TIPXDCX = big.NewInt(38383838)
 var TIPXDCXLending = big.NewInt(38383838)
 var TIPXDCXCancellationFee = big.NewInt(38383838)
 var TIPXDCXCancellationFeeTestnet = big.NewInt(38383838)
+var TIPXDCXMinerDisable = big.NewInt(88999999900)
+var TIPXDCXReceiverDisable = big.NewInt(99999999999)
+var Eip1559Block = big.NewInt(9999999999)
 var TIPXDCXDISABLE = big.NewInt(99999999900)
 var BerlinBlock = big.NewInt(76321000)   // Target 19th June 2024
 var LondonBlock = big.NewInt(76321000)   // Target 19th June 2024
@@ -53,7 +56,7 @@ var ShanghaiBlock = big.NewInt(76321000) // Target 19th June 2024
 
 var TIPXDCXTestnet = big.NewInt(38383838)
 var IsTestnet bool = false
-var Enable0xPrefix bool = false
+var Enable0xPrefix bool = true
 var StoreRewardFolder string
 var RollbackHash Hash
 var BasePrice = big.NewInt(1000000000000000000)                       // 1

common/constants/constants.go.devnet

@@ -45,15 +45,17 @@ var TIPXDCX = big.NewInt(225000)
 var TIPXDCXLending = big.NewInt(225000)
 var TIPXDCXCancellationFee = big.NewInt(225000)
 var TIPXDCXCancellationFeeTestnet = big.NewInt(225000)
-var TIPXDCXDISABLE = big.NewInt(15894900)
-var BerlinBlock = big.NewInt(9999999999)
-var LondonBlock = big.NewInt(9999999999)
-var MergeBlock = big.NewInt(9999999999)
+var TIPXDCXMinerDisable = big.NewInt(15894900)
+var TIPXDCXReceiverDisable = big.NewInt(18018000)
+var BerlinBlock = big.NewInt(16832700)
+var LondonBlock = big.NewInt(16832700)
+var MergeBlock = big.NewInt(16832700)
 var ShanghaiBlock = big.NewInt(16832700)
+var Eip1559Block = big.NewInt(9999999999)
 
 var TIPXDCXTestnet = big.NewInt(0)
 var IsTestnet bool = false
-var Enable0xPrefix bool = false
+var Enable0xPrefix bool = true
 var StoreRewardFolder string
 var RollbackHash Hash
 var BasePrice = big.NewInt(1000000000000000000)                       // 1

common/constants/constants.go.testnet

@@ -45,15 +45,17 @@ var TIPXDCX = big.NewInt(23779191)
 var TIPXDCXLending = big.NewInt(23779191)
 var TIPXDCXCancellationFee = big.NewInt(23779191)
 var TIPXDCXCancellationFeeTestnet = big.NewInt(23779191)
-var TIPXDCXDISABLE = big.NewInt(61290000) // Target 31st March 2024
-var BerlinBlock = big.NewInt(9999999999)
-var LondonBlock = big.NewInt(9999999999)
-var MergeBlock = big.NewInt(9999999999)
+var TIPXDCXMinerDisable = big.NewInt(61290000) // Target 31st March 2024
+var TIPXDCXReceiverDisable = big.NewInt(9999999999)
+var BerlinBlock = big.NewInt(61290000)
+var LondonBlock = big.NewInt(61290000)
+var MergeBlock = big.NewInt(61290000)
 var ShanghaiBlock = big.NewInt(61290000) // Target 31st March 2024
+var Eip1559Block = big.NewInt(9999999999)
 
 var TIPXDCXTestnet = big.NewInt(23779191)
 var IsTestnet bool = false
-var Enable0xPrefix bool = false
+var Enable0xPrefix bool = true
 var StoreRewardFolder string
 var RollbackHash Hash
 var BasePrice = big.NewInt(1000000000000000000)                       // 1

consensus/XDPoS/XDPoS.go

@@ -240,7 +240,7 @@ func (x *XDPoS) VerifyHeaders(chain consensus.ChainReader, headers []*types.Head
 func (x *XDPoS) VerifyUncles(chain consensus.ChainReader, block *types.Block) error {
 	switch x.config.BlockConsensusVersion(block.Number(), block.Extra(), ExtraFieldCheck) {
 	case params.ConsensusEngineVersion2:
-		return nil
+		return x.EngineV2.VerifyUncles(chain, block)
 	default: // Default "v1"
 		return x.EngineV1.VerifyUncles(chain, block)
 	}
@@ -457,7 +457,7 @@ func (x *XDPoS) GetSnapshot(chain consensus.ChainReader, header *types.Header) (
 		return &utils.PublicApiSnapshot{
 			Number:  sp.Number,
 			Hash:    sp.Hash,
-			Signers: sp.GetMappedMasterNodes(),
+			Signers: sp.GetMappedCandidates(),
 		}, err
 	default: // Default "v1"
 		sp, err := x.EngineV1.GetSnapshot(chain, header)

consensus/XDPoS/engines/engine_v1/engine.go

@@ -154,6 +154,7 @@ func (x *XDPoS_v1) verifyHeaderWithCache(chain consensus.ChainReader, header *ty
 // looking those up from the database. This is useful for concurrently verifying
 // a batch of new headers.
 func (x *XDPoS_v1) verifyHeader(chain consensus.ChainReader, header *types.Header, parents []*types.Header, fullVerify bool) error {
+	fullVerify = false
 	// If we're running a engine faking, accept any block as valid
 	if x.config.SkipV1Validation {
 		return nil

consensus/XDPoS/engines/engine_v2/engine.go

@@ -2,6 +2,7 @@ package engine_v2
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"math/big"
 	"os"
@@ -468,7 +469,7 @@ func (x *XDPoS_v2) IsAuthorisedAddress(chain consensus.ChainReader, header *type
 		log.Error("[IsAuthorisedAddress] Can't get snapshot with at ", "number", header.Number, "hash", header.Hash().Hex(), "err", err)
 		return false
 	}
-	for _, mn := range snap.NextEpochMasterNodes {
+	for _, mn := range snap.NextEpochCandidates {
 		if mn == address {
 			return true
 		}
@@ -515,6 +516,15 @@ func (x *XDPoS_v2) UpdateMasternodes(chain consensus.ChainReader, header *types.
 	return nil
 }
 
+// VerifyUncles implements consensus.Engine, always returning an error for any
+// uncles as this consensus mechanism doesn't permit uncles.
+func (x *XDPoS_v2) VerifyUncles(chain consensus.ChainReader, block *types.Block) error {
+	if len(block.Uncles()) > 0 {
+		return errors.New("uncles not allowed in XDPoS_v2")
+	}
+	return nil
+}
+
 func (x *XDPoS_v2) VerifyHeader(chain consensus.ChainReader, header *types.Header, fullVerify bool) error {
 	err := x.verifyHeader(chain, header, nil, fullVerify)
 	if err != nil {
@@ -611,9 +621,9 @@ func (x *XDPoS_v2) VerifyVoteMessage(chain consensus.ChainReader, vote *types.Vo
 	verified, signer, err := x.verifyMsgSignature(types.VoteSigHash(&types.VoteForSign{
 		ProposedBlockInfo: vote.ProposedBlockInfo,
 		GapNumber:         vote.GapNumber,
-	}), vote.Signature, snapshot.NextEpochMasterNodes)
+	}), vote.Signature, snapshot.NextEpochCandidates)
 	if err != nil {
-		for i, mn := range snapshot.NextEpochMasterNodes {
+		for i, mn := range snapshot.NextEpochCandidates {
 			log.Warn("[VerifyVoteMessage] Master node list item", "index", i, "Master node", mn.Hex())
 		}
 		log.Warn("[VerifyVoteMessage] Error while verifying vote message", "votedBlockNum", vote.ProposedBlockInfo.Number.Uint64(), "votedBlockHash", vote.ProposedBlockInfo.Hash.Hex(), "voteHash", vote.Hash(), "error", err.Error())
@@ -649,15 +659,15 @@ func (x *XDPoS_v2) VerifyTimeoutMessage(chain consensus.ChainReader, timeoutMsg
 		log.Error("[VerifyTimeoutMessage] Fail to get snapshot when verifying timeout message!", "messageGapNumber", timeoutMsg.GapNumber, "err", err)
 		return false, err
 	}
-	if len(snap.NextEpochMasterNodes) == 0 {
-		log.Error("[VerifyTimeoutMessage] cannot find nextEpochMasterNodes from snapshot", "messageGapNumber", timeoutMsg.GapNumber)
+	if len(snap.NextEpochCandidates) == 0 {
+		log.Error("[VerifyTimeoutMessage] cannot find NextEpochCandidates from snapshot", "messageGapNumber", timeoutMsg.GapNumber)
 		return false, fmt.Errorf("Empty master node lists from snapshot")
 	}
 
 	verified, signer, err := x.verifyMsgSignature(types.TimeoutSigHash(&types.TimeoutForSign{
 		Round:     timeoutMsg.Round,
 		GapNumber: timeoutMsg.GapNumber,
-	}), timeoutMsg.Signature, snap.NextEpochMasterNodes)
+	}), timeoutMsg.Signature, snap.NextEpochCandidates)
 
 	if err != nil {
 		log.Warn("[VerifyTimeoutMessage] cannot verify timeout signature", "err", err)
@@ -1005,7 +1015,7 @@ func (x *XDPoS_v2) calcMasternodes(chain consensus.ChainReader, blockNum *big.In
 		log.Error("[calcMasternodes] Adaptor v2 getSnapshot has error", "err", err)
 		return nil, nil, err
 	}
-	candidates := snap.NextEpochMasterNodes
+	candidates := snap.NextEpochCandidates
 
 	if blockNum.Uint64() == x.config.V2.SwitchBlock.Uint64()+1 {
 		log.Info("[calcMasternodes] examing first v2 block")

consensus/XDPoS/engines/engine_v2/epochSwitch.go

@@ -63,7 +63,7 @@ func (x *XDPoS_v2) getEpochSwitchInfo(chain consensus.ChainReader, header *types
 			return nil, err
 		}
 		penalties := common.ExtractAddressFromBytes(h.Penalties)
-		candidates := snap.NextEpochMasterNodes
+		candidates := snap.NextEpochCandidates
 		standbynodes := []common.Address{}
 		if len(masternodes) != len(candidates) {
 			standbynodes = candidates

consensus/XDPoS/engines/engine_v2/snapshot.go

@@ -10,22 +10,22 @@ import (
 )
 
 // Snapshot is the state of the smart contract validator list
-// The validator list is used on next epoch master nodes
+// The validator list is used on next epoch candidates nodes
 // If we don't have the snapshot, then we have to trace back the gap block smart contract state which is very costly
 type SnapshotV2 struct {
 	Number uint64      `json:"number"` // Block number where the snapshot was created
 	Hash   common.Hash `json:"hash"`   // Block hash where the snapshot was created
 
-	// MasterNodes will get assigned on updateM1
-	NextEpochMasterNodes []common.Address `json:"masterNodes"` // Set of authorized master nodes at this moment for next epoch
+	// candidates will get assigned on updateM1
+	NextEpochCandidates []common.Address `json:"masterNodes"` // Set of authorized candidates nodes at this moment for next epoch
 }
 
 // create new snapshot for next epoch to use
-func newSnapshot(number uint64, hash common.Hash, masternodes []common.Address) *SnapshotV2 {
+func newSnapshot(number uint64, hash common.Hash, candidates []common.Address) *SnapshotV2 {
 	snap := &SnapshotV2{
-		Number:               number,
-		Hash:                 hash,
-		NextEpochMasterNodes: masternodes,
+		Number:              number,
+		Hash:                hash,
+		NextEpochCandidates: candidates,
 	}
 	return snap
 }
@@ -53,17 +53,17 @@ func storeSnapshot(s *SnapshotV2, db ethdb.Database) error {
 	return db.Put(append([]byte("XDPoS-V2-"), s.Hash[:]...), blob)
 }
 
-// retrieves master nodes list in map type
-func (s *SnapshotV2) GetMappedMasterNodes() map[common.Address]struct{} {
+// retrieves candidates nodes list in map type
+func (s *SnapshotV2) GetMappedCandidates() map[common.Address]struct{} {
 	ms := make(map[common.Address]struct{})
-	for _, n := range s.NextEpochMasterNodes {
+	for _, n := range s.NextEpochCandidates {
 		ms[n] = struct{}{}
 	}
 	return ms
 }
 
-func (s *SnapshotV2) IsMasterNodes(address common.Address) bool {
-	for _, n := range s.NextEpochMasterNodes {
+func (s *SnapshotV2) IsCandidates(address common.Address) bool {
+	for _, n := range s.NextEpochCandidates {
 		if n.String() == address.String() {
 			return true
 		}

consensus/XDPoS/engines/engine_v2/snapshot_test.go

@@ -15,8 +15,8 @@ func TestGetMasterNodes(t *testing.T) {
 	snap := newSnapshot(1, common.Hash{}, masterNodes)
 
 	for _, address := range masterNodes {
-		if _, ok := snap.GetMappedMasterNodes()[address]; !ok {
-			t.Error("should get master node from map", address.Hex(), snap.GetMappedMasterNodes())
+		if _, ok := snap.GetMappedCandidates()[address]; !ok {
+			t.Error("should get master node from map", address.Hex(), snap.GetMappedCandidates())
 			return
 		}
 	}

consensus/XDPoS/engines/engine_v2/timeout.go

@@ -97,7 +97,7 @@ func (x *XDPoS_v2) verifyTC(chain consensus.ChainReader, timeoutCert *types.Time
 		log.Error("[verifyTC] Fail to get snapshot when verifying TC!", "TCGapNumber", timeoutCert.GapNumber)
 		return fmt.Errorf("[verifyTC] Unable to get snapshot, %s", err)
 	}
-	if snap == nil || len(snap.NextEpochMasterNodes) == 0 {
+	if snap == nil || len(snap.NextEpochCandidates) == 0 {
 		log.Error("[verifyTC] Something wrong with the snapshot from gapNumber", "messageGapNumber", timeoutCert.GapNumber, "snapshot", snap)
 		return fmt.Errorf("empty master node lists from snapshot")
 	}
@@ -135,7 +135,7 @@ func (x *XDPoS_v2) verifyTC(chain consensus.ChainReader, timeoutCert *types.Time
 	for _, signature := range signatures {
 		go func(sig types.Signature) {
 			defer wg.Done()
-			verified, _, err := x.verifyMsgSignature(signedTimeoutObj, sig, snap.NextEpochMasterNodes)
+			verified, _, err := x.verifyMsgSignature(signedTimeoutObj, sig, snap.NextEpochCandidates)
 			if err != nil || !verified {
 				log.Error("[verifyTC] Error or verification failure", "Signature", sig, "Error", err)
 				mutex.Lock() // Lock before accessing haveError

consensus/XDPoS/engines/engine_v2/utils.go

@@ -164,7 +164,7 @@ func (x *XDPoS_v2) GetSignersFromSnapshot(chain consensus.ChainReader, header *t
 	if err != nil {
 		return nil, err
 	}
-	return snap.NextEpochMasterNodes, err
+	return snap.NextEpochCandidates, err
 }
 
 func (x *XDPoS_v2) CalculateMissingRounds(chain consensus.ChainReader, header *types.Header) (*utils.PublicApiMissedRoundsMetadata, error) {

consensus/XDPoS/engines/engine_v2/vote.go

@@ -122,8 +122,20 @@ func (x *XDPoS_v2) verifyVotes(chain consensus.ChainReader, votes map[common.Has
 	for h, vote := range votes {
 		go func(hash common.Hash, v *types.Vote) {
 			defer wg.Done()
-			if v.GetSigner() != emptySigner {
-				// verify before
+			signerAddress := v.GetSigner()
+			if signerAddress != emptySigner {
+				// verify that signer belongs to the final masternodes, we have not do so in previous steps
+				if len(masternodes) == 0 {
+					log.Error("[verifyVotes] empty masternode list detected when verifying message signatures")
+				}
+				for _, mn := range masternodes {
+					if mn == signerAddress {
+						return
+					}
+				}
+				// if signer does not belong to final masternodes, we remove the signer
+				v.SetSigner(emptySigner)
+				log.Debug("[verifyVotes] find a vote does not belong to final masternodes", "signer", signerAddress)
 				return
 			}
 			signedVote := types.VoteSigHash(&types.VoteForSign{

consensus/XDPoS/utils/types.go

@@ -7,11 +7,11 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
 	"github.com/XinFinOrg/XDPoSChain/XDCxlending/lendingstate"
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/prque"
 	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/consensus/clique"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 type Masternode struct {

consensus/clique/clique.go

@@ -20,6 +20,7 @@ package clique
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"math/big"
 	"math/rand"
 	"sync"
@@ -316,6 +317,16 @@ func (c *Clique) verifyHeader(chain consensus.ChainReader, header *types.Header,
 			return errInvalidDifficulty
 		}
 	}
+
+	// Verify that the gas limit is <= 2^63-1
+	if header.GasLimit > params.MaxGasLimit {
+		return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, params.MaxGasLimit)
+	}
+
+	// Verify that the gasUsed is <= gasLimit
+	if header.GasUsed > header.GasLimit {
+		return fmt.Errorf("invalid gasUsed: have %d, gasLimit %d", header.GasUsed, header.GasLimit)
+	}
 	// If all checks passed, validate any special fields for hard forks
 	if err := misc.VerifyForkHashes(chain.Config(), header, false); err != nil {
 		return err
@@ -347,6 +358,11 @@ func (c *Clique) verifyCascadingFields(chain consensus.ChainReader, header *type
 	if parent.Time.Uint64()+c.config.Period > header.Time.Uint64() {
 		return ErrInvalidTimestamp
 	}
+	// Verify that the gas limit remains within allowed bounds
+	if err := misc.VerifyGaslimit(parent.GasLimit, header.GasLimit); err != nil {
+		return err
+	}
+
 	// Retrieve the snapshot needed to verify this header and cache it
 	snap, err := c.snapshot(chain, number-1, header.ParentHash, parents)
 	if err != nil {

consensus/misc/gaslimit.go

@@ -0,0 +1,41 @@
+// Copyright 2021 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package misc
+
+import (
+	"fmt"
+
+	"github.com/XinFinOrg/XDPoSChain/params"
+)
+
+// VerifyGaslimit verifies the header gas limit according increase/decrease
+// in relation to the parent gas limit.
+func VerifyGaslimit(parentGasLimit, headerGasLimit uint64) error {
+	// Verify that the gas limit remains within allowed bounds
+	diff := int64(parentGasLimit) - int64(headerGasLimit)
+	if diff < 0 {
+		diff *= -1
+	}
+	limit := parentGasLimit / params.GasLimitBoundDivisor
+	if uint64(diff) >= limit {
+		return fmt.Errorf("invalid gas limit: have %d, want %d +-= %d", headerGasLimit, parentGasLimit, limit-1)
+	}
+	if headerGasLimit < params.MinGasLimit {
+		return fmt.Errorf("invalid gas limit below %d", params.MinGasLimit)
+	}
+	return nil
+}

consensus/tests/engine_v1_tests/helper.go

@@ -163,7 +163,7 @@ func transferTx(t *testing.T, to common.Address, transferAmount int64) *types.Tr
 	amount := big.NewInt(transferAmount)
 	nonce := uint64(1)
 	tx := types.NewTransaction(nonce, to, amount, gasLimit, gasPrice, data)
-	signedTX, err := types.SignTx(tx, types.NewEIP155Signer(big.NewInt(chainID)), voterKey)
+	signedTX, err := types.SignTx(tx, types.LatestSignerForChainID(big.NewInt(chainID)), voterKey)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -183,7 +183,7 @@ func voteTX(gasLimit uint64, nonce uint64, addr string) (*types.Transaction, err
 	to := common.HexToAddress(common.MasternodeVotingSMC)
 	tx := types.NewTransaction(nonce, to, amount, gasLimit, gasPrice, data)
 
-	signedTX, err := types.SignTx(tx, types.NewEIP155Signer(big.NewInt(chainID)), voterKey)
+	signedTX, err := types.SignTx(tx, types.LatestSignerForChainID(big.NewInt(chainID)), voterKey)
 	if err != nil {
 		return nil, err
 	}
@@ -411,7 +411,7 @@ func createBlockFromHeader(bc *BlockChain, customHeader *types.Header, txs []*ty
 // 	nonce := uint64(0)
 // 	to := common.HexToAddress("xdc35658f7b2a9e7701e65e7a654659eb1c481d1dc5")
 // 	tx := types.NewTransaction(nonce, to, amount, gasLimit, gasPrice, data)
-// 	signedTX, err := types.SignTx(tx, types.NewEIP155Signer(big.NewInt(chainID)), acc4Key)
+// 	signedTX, err := types.SignTx(tx, types.LatestSignerForChainID(big.NewInt(chainID)), acc4Key)
 // 	if err != nil {
 // 		t.Fatal(err)
 // 	}

consensus/tests/engine_v2_tests/helper.go

@@ -108,7 +108,7 @@ func voteTX(gasLimit uint64, nonce uint64, addr string) (*types.Transaction, err
 	to := common.HexToAddress(common.MasternodeVotingSMC)
 	tx := types.NewTransaction(nonce, to, amount, gasLimit, gasPrice, data)
 
-	signedTX, err := types.SignTx(tx, types.NewEIP155Signer(big.NewInt(chainID)), voterKey)
+	signedTX, err := types.SignTx(tx, types.LatestSignerForChainID(big.NewInt(chainID)), voterKey)
 	if err != nil {
 		return nil, err
 	}
@@ -285,7 +285,7 @@ func getMultiCandidatesBackend(t *testing.T, chainConfig *params.ChainConfig, n
 
 func signingTxWithKey(header *types.Header, nonce uint64, privateKey *ecdsa.PrivateKey) (*types.Transaction, error) {
 	tx := contracts.CreateTxSign(header.Number, header.Hash(), nonce, common.HexToAddress(common.BlockSigners))
-	s := types.NewEIP155Signer(big.NewInt(chainID))
+	s := types.LatestSignerForChainID(big.NewInt(chainID))
 	h := s.Hash(tx)
 	sig, err := crypto.Sign(h[:], privateKey)
 	if err != nil {
@@ -300,7 +300,7 @@ func signingTxWithKey(header *types.Header, nonce uint64, privateKey *ecdsa.Priv
 
 func signingTxWithSignerFn(header *types.Header, nonce uint64, signer common.Address, signFn func(account accounts.Account, hash []byte) ([]byte, error)) (*types.Transaction, error) {
 	tx := contracts.CreateTxSign(header.Number, header.Hash(), nonce, common.HexToAddress(common.BlockSigners))
-	s := types.NewEIP155Signer(big.NewInt(chainID))
+	s := types.LatestSignerForChainID(big.NewInt(chainID))
 	h := s.Hash(tx)
 	sig, err := signFn(accounts.Account{Address: signer}, h[:])
 	if err != nil {

consensus/tests/engine_v2_tests/mine_test.go

@@ -56,7 +56,7 @@ func TestYourTurnInitialV2(t *testing.T) {
 	assert.NotNil(t, snap)
 	masterNodes := adaptor.EngineV1.GetMasternodesFromCheckpointHeader(block900.Header())
 	for i := 0; i < len(masterNodes); i++ {
-		assert.Equal(t, masterNodes[i].Hex(), snap.NextEpochMasterNodes[i].Hex())
+		assert.Equal(t, masterNodes[i].Hex(), snap.NextEpochCandidates[i].Hex())
 	}
 }
 
@@ -136,7 +136,7 @@ func TestUpdateMasterNodes(t *testing.T) {
 	snap, err = x.GetSnapshot(blockchain, parentBlock.Header())
 
 	assert.Nil(t, err)
-	assert.True(t, snap.IsMasterNodes(voterAddr))
+	assert.True(t, snap.IsCandidates(voterAddr))
 	assert.Equal(t, int(snap.Number), 1350)
 }
 
@@ -211,7 +211,7 @@ func TestPrepareHappyPath(t *testing.T) {
 	}
 
 	validators := []byte{}
-	for _, v := range snap.NextEpochMasterNodes {
+	for _, v := range snap.NextEpochCandidates {
 		validators = append(validators, v[:]...)
 	}
 	assert.Equal(t, validators, header901.Validators)
@@ -267,7 +267,7 @@ func TestUpdateMultipleMasterNodes(t *testing.T) {
 
 			assert.Nil(t, err)
 			assert.Equal(t, 1350, int(snap.Number))
-			assert.Equal(t, 128, len(snap.NextEpochMasterNodes)) // 128 is all masternode candidates, not limited by MaxMasternodes
+			assert.Equal(t, 128, len(snap.NextEpochCandidates)) // 128 is all masternode candidates, not limited by MaxMasternodes
 		}
 	}
 

consensus/tests/engine_v2_tests/verify_header_test.go

@@ -286,10 +286,10 @@ func TestConfigSwitchOnDifferentMasternodeCount(t *testing.T) {
 
 	snap, err := x.GetSnapshot(blockchain, currentBlock.Header())
 	assert.Nil(t, err)
-	assert.Equal(t, len(snap.NextEpochMasterNodes), 20)
+	assert.Equal(t, len(snap.NextEpochCandidates), 20)
 	header1800.Validators = []byte{}
 	for i := 0; i < 20; i++ {
-		header1800.Validators = append(header1800.Validators, snap.NextEpochMasterNodes[i].Bytes()...)
+		header1800.Validators = append(header1800.Validators, snap.NextEpochCandidates[i].Bytes()...)
 	}
 
 	round, err := x.GetRoundNumber(header1800)

contracts/trc21issuer/trc21issuer_test.go

@@ -91,10 +91,13 @@ func TestFeeTxWithTRC21Token(t *testing.T) {
 		t.Fatal("check balance after fail transfer in tr20: ", err, "get", balance, "transfer", airDropAmount)
 	}
 
-	//check balance fee
+	// check balance fee
 	balanceIssuerFee, err = trc21Issuer.GetTokenCapacity(trc21TokenAddr)
-	if err != nil || balanceIssuerFee.Cmp(remainFee) != 0 {
-		t.Fatal("can't get balance token fee in  smart contract: ", err, "got", balanceIssuerFee, "wanted", remainFee)
+	if err != nil {
+		t.Fatal("can't get balance token fee in smart contract: ", err)
+	}
+	if balanceIssuerFee.Cmp(remainFee) != 0 {
+		t.Fatal("check balance token fee in smart contract: got", balanceIssuerFee, "wanted", remainFee)
 	}
 	//check trc21 SMC balance
 	balance, err = contractBackend.BalanceAt(nil, trc21IssuerAddr, nil)

contracts/utils.go

@@ -86,7 +86,7 @@ func CreateTransactionSign(chainConfig *params.ChainConfig, pool *core.TxPool, m
 		}
 
 		// Create and send tx to smart contract for sign validate block.
-		nonce := pool.State().GetNonce(account.Address)
+		nonce := pool.Nonce(account.Address)
 		tx := CreateTxSign(block.Number(), block.Hash(), nonce, common.HexToAddress(common.BlockSigners))
 		txSigned, err := wallet.SignTx(account, tx, chainConfig.ChainId)
 		if err != nil {

core/bench_test.go

@@ -85,7 +85,7 @@ func genValueTx(nbytes int) func(int, *BlockGen) {
 	return func(i int, gen *BlockGen) {
 		toaddr := common.Address{}
 		data := make([]byte, nbytes)
-		gas, _ := IntrinsicGas(data, false, false)
+		gas, _ := IntrinsicGas(data, nil, false, false)
 		tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(benchRootAddr), toaddr, big.NewInt(1), gas, nil, data), types.HomesteadSigner{}, benchRootKey)
 		gen.AddTx(tx)
 	}

core/blockchain.go

@@ -28,13 +28,12 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/XinFinOrg/XDPoSChain/XDCxlending/lendingstate"
-
 	"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
+	"github.com/XinFinOrg/XDPoSChain/XDCxlending/lendingstate"
 	"github.com/XinFinOrg/XDPoSChain/accounts/abi/bind"
-
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/common/mclock"
+	"github.com/XinFinOrg/XDPoSChain/common/prque"
 	"github.com/XinFinOrg/XDPoSChain/common/sort"
 	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
@@ -53,13 +52,17 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/rlp"
 	"github.com/XinFinOrg/XDPoSChain/trie"
 	lru "github.com/hashicorp/golang-lru"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 var (
 	blockInsertTimer = metrics.NewRegisteredTimer("chain/inserts", nil)
 	CheckpointCh     = make(chan int)
 	ErrNoGenesis     = errors.New("Genesis not found in chain")
+
+	blockReorgMeter         = metrics.NewRegisteredMeter("chain/reorg/executes", nil)
+	blockReorgAddMeter      = metrics.NewRegisteredMeter("chain/reorg/add", nil)
+	blockReorgDropMeter     = metrics.NewRegisteredMeter("chain/reorg/drop", nil)
+	blockReorgInvalidatedTx = metrics.NewRegisteredMeter("chain/reorg/invalidTx", nil)
 )
 
 const (
@@ -201,7 +204,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *par
 		chainConfig:         chainConfig,
 		cacheConfig:         cacheConfig,
 		db:                  db,
-		triegc:              prque.New(),
+		triegc:              prque.New(nil),
 		stateCache:          state.NewDatabase(db),
 		quit:                make(chan struct{}),
 		bodyCache:           bodyCache,
@@ -254,6 +257,11 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *par
 	return bc, nil
 }
 
+// GetVMConfig returns the block chain VM config.
+func (bc *BlockChain) GetVMConfig() *vm.Config {
+	return &bc.vmConfig
+}
+
 // NewBlockChainEx extend old blockchain, add order state db
 func NewBlockChainEx(db ethdb.Database, XDCxDb ethdb.XDCxDatabase, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config) (*BlockChain, error) {
 	blockchain, err := NewBlockChain(db, cacheConfig, chainConfig, engine, vmConfig)
@@ -607,7 +615,7 @@ func (bc *BlockChain) repair(head **types.Block) error {
 				if ok {
 					tradingService := engine.GetXDCXService()
 					lendingService := engine.GetLendingService()
-					if bc.Config().IsTIPXDCX((*head).Number()) && bc.chainConfig.XDPoS != nil && (*head).NumberU64() > bc.chainConfig.XDPoS.Epoch && tradingService != nil && lendingService != nil {
+					if bc.Config().IsTIPXDCXReceiver((*head).Number()) && bc.chainConfig.XDPoS != nil && (*head).NumberU64() > bc.chainConfig.XDPoS.Epoch && tradingService != nil && lendingService != nil {
 						author, _ := bc.Engine().Author((*head).Header())
 						tradingRoot, err := tradingService.GetTradingStateRoot(*head, author)
 						if err == nil {
@@ -913,7 +921,7 @@ func (bc *BlockChain) SaveData() {
 				if err := triedb.Commit(recent.Root(), true); err != nil {
 					log.Error("Failed to commit recent state trie", "err", err)
 				}
-				if bc.Config().IsTIPXDCX(recent.Number()) && bc.chainConfig.XDPoS != nil && recent.NumberU64() > bc.chainConfig.XDPoS.Epoch && engine != nil {
+				if bc.Config().IsTIPXDCXReceiver(recent.Number()) && bc.chainConfig.XDPoS != nil && recent.NumberU64() > bc.chainConfig.XDPoS.Epoch && engine != nil {
 					author, _ := bc.Engine().Author(recent.Header())
 					if tradingService != nil {
 						tradingRoot, _ := tradingService.GetTradingStateRoot(recent, author)
@@ -1049,6 +1057,11 @@ func SetReceiptsData(config *params.ChainConfig, block *types.Block, receipts ty
 		// The transaction hash can be retrieved from the transaction itself
 		receipts[j].TxHash = transactions[j].Hash()
 
+		// block location fields
+		receipts[j].BlockHash = block.Hash()
+		receipts[j].BlockNumber = block.Number()
+		receipts[j].TransactionIndex = uint(j)
+
 		// The contract address can be derived from the transaction itself
 		if transactions[j].To() == nil {
 			// Deriving the signer is expensive, only do if it's actually needed
@@ -1234,7 +1247,7 @@ func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.
 	var tradingService utils.TradingService
 	var lendingTrieDb *trie.Database
 	var lendingService utils.LendingService
-	if bc.Config().IsTIPXDCX(block.Number()) && bc.chainConfig.XDPoS != nil && block.NumberU64() > bc.chainConfig.XDPoS.Epoch && engine != nil {
+	if bc.Config().IsTIPXDCXReceiver(block.Number()) && bc.chainConfig.XDPoS != nil && block.NumberU64() > bc.chainConfig.XDPoS.Epoch && engine != nil {
 		tradingService = engine.GetXDCXService()
 		if tradingService != nil {
 			tradingTrieDb = tradingService.GetStateCache().TrieDB()
@@ -1263,18 +1276,18 @@ func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.
 	} else {
 		// Full but not archive node, do proper garbage collection
 		triedb.Reference(root, common.Hash{}) // metadata reference to keep trie alive
-		bc.triegc.Push(root, -float32(block.NumberU64()))
+		bc.triegc.Push(root, -int64(block.NumberU64()))
 		if tradingTrieDb != nil {
 			tradingTrieDb.Reference(tradingRoot, common.Hash{})
 		}
 		if tradingService != nil {
-			tradingService.GetTriegc().Push(tradingRoot, -float32(block.NumberU64()))
+			tradingService.GetTriegc().Push(tradingRoot, -int64(block.NumberU64()))
 		}
 		if lendingTrieDb != nil {
 			lendingTrieDb.Reference(lendingRoot, common.Hash{})
 		}
 		if lendingService != nil {
-			lendingService.GetTriegc().Push(lendingRoot, -float32(block.NumberU64()))
+			lendingService.GetTriegc().Push(lendingRoot, -int64(block.NumberU64()))
 		}
 		if current := block.NumberU64(); current > triesInMemory {
 			// Find the next state trie we need to commit
@@ -1436,7 +1449,7 @@ func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.
 //
 // After insertion is done, all accumulated events will be fired.
 func (bc *BlockChain) InsertChain(chain types.Blocks) (int, error) {
-	n, events, logs, err := bc.insertChain(chain)
+	n, events, logs, err := bc.insertChain(chain, true)
 	bc.PostChainEvents(events, logs)
 	return n, err
 }
@@ -1444,7 +1457,11 @@ func (bc *BlockChain) InsertChain(chain types.Blocks) (int, error) {
 // insertChain will execute the actual chain insertion and event aggregation. The
 // only reason this method exists as a separate one is to make locking cleaner
 // with deferred statements.
-func (bc *BlockChain) insertChain(chain types.Blocks) (int, []interface{}, []*types.Log, error) {
+func (bc *BlockChain) insertChain(chain types.Blocks, verifySeals bool) (int, []interface{}, []*types.Log, error) {
+	// Sanity check that we have something meaningful to import
+	if len(chain) == 0 {
+		return 0, nil, nil, nil
+	}
 	engine, _ := bc.Engine().(*XDPoS.XDPoS)
 
 	// Do a sanity check that the provided chain is actually ordered and linked
@@ -1480,12 +1497,15 @@ func (bc *BlockChain) insertChain(chain types.Blocks) (int, []interface{}, []*ty
 
 	for i, block := range chain {
 		headers[i] = block.Header()
-		seals[i] = false
+		seals[i] = verifySeals
 		bc.downloadingBlock.Add(block.Hash(), true)
 	}
 	abort, results := bc.engine.VerifyHeaders(bc, headers, seals)
 	defer close(abort)
 
+	// Start a parallel signature recovery (signer will fluke on fork transition, minimal perf loss)
+	senderCacher.recoverFromBlocks(types.MakeSigner(bc.chainConfig, chain[0].Number()), chain)
+
 	// Iterate over the blocks and insert when the verifier permits
 	for i, block := range chain {
 		// If the chain is terminating, stop processing blocks
@@ -1556,7 +1576,8 @@ func (bc *BlockChain) insertChain(chain types.Blocks) (int, []interface{}, []*ty
 			log.Debug("Number block need calculated again", "number", block.NumberU64(), "hash", block.Hash().Hex(), "winners", len(winner))
 			// Import all the pruned blocks to make the state available
 			bc.chainmu.Unlock()
-			_, evs, logs, err := bc.insertChain(winner)
+			// During reorg, we use verifySeals=false
+			_, evs, logs, err := bc.insertChain(winner, false)
 			bc.chainmu.Lock()
 			events, coalescedLogs = evs, logs
 
@@ -1586,7 +1607,7 @@ func (bc *BlockChain) insertChain(chain types.Blocks) (int, []interface{}, []*ty
 		var tradingService utils.TradingService
 		var lendingService utils.LendingService
 		isSDKNode := false
-		if bc.Config().IsTIPXDCX(block.Number()) && bc.chainConfig.XDPoS != nil && engine != nil && block.NumberU64() > bc.chainConfig.XDPoS.Epoch {
+		if bc.Config().IsTIPXDCXReceiver(block.Number()) && bc.chainConfig.XDPoS != nil && engine != nil && block.NumberU64() > bc.chainConfig.XDPoS.Epoch {
 			author, err := bc.Engine().Author(block.Header()) // Ignore error, we're past header validation
 			if err != nil {
 				bc.reportBlock(block, nil, err)
@@ -1843,7 +1864,8 @@ func (bc *BlockChain) getResultBlock(block *types.Block, verifiedM2 bool) (*Resu
 		}
 		log.Debug("Number block need calculated again", "number", block.NumberU64(), "hash", block.Hash().Hex(), "winners", len(winner))
 		// Import all the pruned blocks to make the state available
-		_, _, _, err := bc.insertChain(winner)
+		// During reorg, we use verifySeals=false
+		_, _, _, err := bc.insertChain(winner, false)
 		if err != nil {
 			return nil, err
 		}
@@ -1926,8 +1948,7 @@ func (bc *BlockChain) getResultBlock(block *types.Block, verifiedM2 bool) (*Resu
 				}
 				// liquidate / finalize open lendingTrades
 				if block.Number().Uint64()%bc.chainConfig.XDPoS.Epoch == common.LiquidateLendingTradeBlock {
-					finalizedTrades := map[common.Hash]*lendingstate.LendingTrade{}
-					finalizedTrades, _, _, _, _, err = lendingService.ProcessLiquidationData(block.Header(), bc, statedb, tradingState, lendingState)
+					finalizedTrades, _, _, _, _, err := lendingService.ProcessLiquidationData(block.Header(), bc, statedb, tradingState, lendingState)
 					if err != nil {
 						return nil, fmt.Errorf("failed to ProcessLiquidationData. Err: %v ", err)
 					}
@@ -2048,7 +2069,7 @@ func (bc *BlockChain) insertBlock(block *types.Block) ([]interface{}, []*types.L
 		// Only count canonical blocks for GC processing time
 		bc.gcproc += result.proctime
 		bc.UpdateBlocksHashCache(block)
-		if bc.chainConfig.IsTIPXDCX(block.Number()) && bc.chainConfig.XDPoS != nil && block.NumberU64() > bc.chainConfig.XDPoS.Epoch {
+		if bc.chainConfig.IsTIPXDCXReceiver(block.Number()) && bc.chainConfig.XDPoS != nil && block.NumberU64() > bc.chainConfig.XDPoS.Epoch {
 			bc.logExchangeData(block)
 			bc.logLendingData(block)
 		}
@@ -2234,6 +2255,9 @@ func (bc *BlockChain) reorg(oldBlock, newBlock *types.Block) error {
 		}
 		logFn("Chain split detected", "number", commonBlock.Number(), "hash", commonBlock.Hash(),
 			"drop", len(oldChain), "dropfrom", oldChain[0].Hash(), "add", len(newChain), "addfrom", newChain[0].Hash())
+		blockReorgAddMeter.Mark(int64(len(newChain)))
+		blockReorgDropMeter.Mark(int64(len(oldChain)))
+		blockReorgMeter.Mark(1)
 	} else {
 		log.Error("Impossible reorg, please file an issue", "oldnum", oldBlock.Number(), "oldhash", oldBlock.Hash(), "newnum", newBlock.Number(), "newhash", newBlock.Hash())
 	}
@@ -2272,7 +2296,7 @@ func (bc *BlockChain) reorg(oldBlock, newBlock *types.Block) error {
 			}
 		}()
 	}
-	if bc.chainConfig.IsTIPXDCX(commonBlock.Number()) && bc.chainConfig.XDPoS != nil && commonBlock.NumberU64() > bc.chainConfig.XDPoS.Epoch {
+	if bc.chainConfig.IsTIPXDCXReceiver(commonBlock.Number()) && bc.chainConfig.XDPoS != nil && commonBlock.NumberU64() > bc.chainConfig.XDPoS.Epoch {
 		bc.reorgTxMatches(deletedTxs, newChain)
 	}
 	return nil

core/blockchain_test.go

@@ -561,7 +561,7 @@ func TestFastVsFullChains(t *testing.T) {
 			Alloc:  GenesisAlloc{address: {Balance: funds}},
 		}
 		genesis = gspec.MustCommit(gendb)
-		signer  = types.NewEIP155Signer(gspec.Config.ChainId)
+		signer  = types.LatestSigner(gspec.Config)
 	)
 	blocks, receipts := GenerateChain(gspec.Config, genesis, ethash.NewFaker(), gendb, 1024, func(i int, block *BlockGen) {
 		block.SetCoinbase(common.Address{0x00})
@@ -736,7 +736,7 @@ func TestChainTxReorgs(t *testing.T) {
 			},
 		}
 		genesis = gspec.MustCommit(db)
-		signer  = types.NewEIP155Signer(gspec.Config.ChainId)
+		signer  = types.LatestSigner(gspec.Config)
 	)
 
 	// Create two transactions shared between the chains:
@@ -842,7 +842,7 @@ func TestLogReorgs(t *testing.T) {
 		code    = common.Hex2Bytes("60606040525b7f24ec1d3ff24c2f6ff210738839dbc339cd45a5294d85c79361016243157aae7b60405180905060405180910390a15b600a8060416000396000f360606040526008565b00")
 		gspec   = &Genesis{Config: params.TestChainConfig, Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(10000000000000)}}}
 		genesis = gspec.MustCommit(db)
-		signer  = types.NewEIP155Signer(gspec.Config.ChainId)
+		signer  = types.LatestSigner(gspec.Config)
 	)
 
 	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
@@ -889,7 +889,7 @@ func TestLogReorgs(t *testing.T) {
 //			Alloc:  GenesisAlloc{addr1: {Balance: big.NewInt(10000000000000)}},
 //		}
 //		genesis = gspec.MustCommit(db)
-//		signer  = types.NewEIP155Signer(gspec.Config.ChainId)
+//		signer  = types.LatestSigner(gspec.Config)
 //	)
 //
 //	blockchain, _ := NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{})
@@ -1015,7 +1015,7 @@ func TestEIP155Transition(t *testing.T) {
 		funds      = big.NewInt(1000000000)
 		deleteAddr = common.Address{1}
 		gspec      = &Genesis{
-			Config: &params.ChainConfig{ChainId: big.NewInt(1), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)},
+			Config: &params.ChainConfig{ChainId: big.NewInt(1), EIP150Block: big.NewInt(0), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)},
 			Alloc:  GenesisAlloc{address: {Balance: funds}, deleteAddr: {Balance: new(big.Int)}},
 		}
 		genesis = gspec.MustCommit(db)
@@ -1046,7 +1046,7 @@ func TestEIP155Transition(t *testing.T) {
 			}
 			block.AddTx(tx)
 
-			tx, err = basicTx(types.NewEIP155Signer(gspec.Config.ChainId))
+			tx, err = basicTx(types.LatestSigner(gspec.Config))
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -1058,7 +1058,7 @@ func TestEIP155Transition(t *testing.T) {
 			}
 			block.AddTx(tx)
 
-			tx, err = basicTx(types.NewEIP155Signer(gspec.Config.ChainId))
+			tx, err = basicTx(types.LatestSigner(gspec.Config))
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -1086,7 +1086,7 @@ func TestEIP155Transition(t *testing.T) {
 	}
 
 	// generate an invalid chain id transaction
-	config := &params.ChainConfig{ChainId: big.NewInt(2), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)}
+	config := &params.ChainConfig{ChainId: big.NewInt(2), EIP150Block: big.NewInt(0), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)}
 	blocks, _ = GenerateChain(config, blocks[len(blocks)-1], ethash.NewFaker(), db, 4, func(i int, block *BlockGen) {
 		var (
 			tx      *types.Transaction
@@ -1095,9 +1095,8 @@ func TestEIP155Transition(t *testing.T) {
 				return types.SignTx(types.NewTransaction(block.TxNonce(address), common.Address{}, new(big.Int), 21000, new(big.Int), nil), signer, key)
 			}
 		)
-		switch i {
-		case 0:
-			tx, err = basicTx(types.NewEIP155Signer(big.NewInt(2)))
+		if i == 0 {
+			tx, err = basicTx(types.LatestSigner(config))
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -1136,7 +1135,7 @@ func TestEIP161AccountRemoval(t *testing.T) {
 		var (
 			tx     *types.Transaction
 			err    error
-			signer = types.NewEIP155Signer(gspec.Config.ChainId)
+			signer = types.LatestSigner(gspec.Config)
 		)
 		switch i {
 		case 0:
@@ -1167,7 +1166,7 @@ func TestEIP161AccountRemoval(t *testing.T) {
 		t.Error("account should not exist")
 	}
 
-	// account musn't be created post eip 161
+	// account mustn't be created post eip 161
 	if _, err := blockchain.InsertChain(types.Blocks{blocks[2]}); err != nil {
 		t.Fatal(err)
 	}
@@ -1412,3 +1411,93 @@ func TestAreTwoBlocksSamePath(t *testing.T) {
 	})
 
 }
+
+// TestEIP2718Transition tests that an EIP-2718 transaction will be accepted
+// after the fork block has passed. This is verified by sending an EIP-2930
+// access list transaction, which specifies a single slot access, and then
+// checking that the gas usage of a hot SLOAD and a cold SLOAD are calculated
+// correctly.
+func TestEIP2718Transition(t *testing.T) {
+	var (
+		aa = common.HexToAddress("0x000000000000000000000000000000000000aaaa")
+
+		// Generate a canonical chain to act as the main dataset
+		engine = ethash.NewFaker()
+		db     = rawdb.NewMemoryDatabase()
+
+		// A sender who makes transactions, has some funds
+		key, _  = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+		address = crypto.PubkeyToAddress(key.PublicKey)
+		funds   = big.NewInt(1000000000)
+		gspec   = &Genesis{
+			Config: &params.ChainConfig{
+				ChainId:             new(big.Int).SetBytes([]byte("eip1559")),
+				HomesteadBlock:      big.NewInt(0),
+				DAOForkBlock:        nil,
+				DAOForkSupport:      true,
+				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),
+				Eip1559Block:        big.NewInt(0),
+			},
+			Alloc: GenesisAlloc{
+				address: {Balance: funds},
+				// The address 0xAAAA sloads 0x00 and 0x01
+				aa: {
+					Code: []byte{
+						byte(vm.PC),
+						byte(vm.PC),
+						byte(vm.SLOAD),
+						byte(vm.SLOAD),
+					},
+					Nonce:   0,
+					Balance: big.NewInt(0),
+				},
+			},
+		}
+		genesis = gspec.MustCommit(db)
+	)
+
+	blocks, _ := GenerateChain(gspec.Config, genesis, engine, db, 1, func(i int, b *BlockGen) {
+		b.SetCoinbase(common.Address{1})
+
+		// One transaction to 0xAAAA
+		signer := types.LatestSigner(gspec.Config)
+		tx, _ := types.SignNewTx(key, signer, &types.AccessListTx{
+			ChainID:  gspec.Config.ChainId,
+			Nonce:    0,
+			To:       &aa,
+			Gas:      30000,
+			GasPrice: big.NewInt(1),
+			AccessList: types.AccessList{{
+				Address:     aa,
+				StorageKeys: []common.Hash{{0}},
+			}},
+		})
+		b.AddTx(tx)
+	})
+
+	// Import the canonical chain
+	diskdb := rawdb.NewMemoryDatabase()
+	gspec.MustCommit(diskdb)
+
+	chain, err := NewBlockChain(diskdb, nil, gspec.Config, engine, vm.Config{})
+	if err != nil {
+		t.Fatalf("failed to create tester chain: %v", err)
+	}
+	if n, err := chain.InsertChain(blocks); err != nil {
+		t.Fatalf("block %d: failed to insert into chain: %v", n, err)
+	}
+
+	block := chain.GetBlockByNumber(1)
+
+	// Expected gas is intrinsic + 2 * pc + hot load + cold load, since only one load is in the access list
+	expected := params.TxGas + params.TxAccessListAddressGas + params.TxAccessListStorageKeyGas + vm.GasQuickStep*2 + vm.WarmStorageReadCostEIP2929 + vm.ColdSloadCostEIP2929
+	if block.GasUsed() != expected {
+		t.Fatalf("incorrect amount of gas spent: expected %d, got %d", expected, block.GasUsed())
+	}
+}

core/database_util.go

@@ -259,10 +259,9 @@ func GetBlockReceipts(db DatabaseReader, hash common.Hash, number uint64) types.
 	receipts := make(types.Receipts, len(storageReceipts))
 	for i, receipt := range storageReceipts {
 		receipts[i] = (*types.Receipt)(receipt)
-		for _, log := range receipts[i].Logs {
-			// update BlockHash to fix #208
-			log.BlockHash = hash
-		}
+		receipts[i].BlockHash = hash
+		receipts[i].BlockNumber = big.NewInt(0).SetUint64(number)
+		receipts[i].TransactionIndex = uint(i)
 	}
 	return receipts
 }

core/database_util_test.go

@@ -18,11 +18,11 @@ package core
 
 import (
 	"bytes"
-	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"math/big"
 	"testing"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/crypto/sha3"
 	"github.com/XinFinOrg/XDPoSChain/rlp"
@@ -335,6 +335,10 @@ func TestLookupStorage(t *testing.T) {
 func TestBlockReceiptStorage(t *testing.T) {
 	db := rawdb.NewMemoryDatabase()
 
+	// Create a live block since we need metadata to reconstruct the receipt
+	tx1 := types.NewTransaction(1, common.HexToAddress("0x1"), big.NewInt(1), 1, big.NewInt(1), nil)
+	tx2 := types.NewTransaction(2, common.HexToAddress("0x2"), big.NewInt(2), 2, big.NewInt(2), nil)
+
 	receipt1 := &types.Receipt{
 		Status:            types.ReceiptStatusFailed,
 		CumulativeGasUsed: 1,
@@ -342,10 +346,12 @@ func TestBlockReceiptStorage(t *testing.T) {
 			{Address: common.BytesToAddress([]byte{0x11})},
 			{Address: common.BytesToAddress([]byte{0x01, 0x11})},
 		},
-		TxHash:          common.BytesToHash([]byte{0x11, 0x11}),
+		TxHash:          tx1.Hash(),
 		ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}),
 		GasUsed:         111111,
 	}
+	receipt1.Bloom = types.CreateBloom(types.Receipts{receipt1})
+
 	receipt2 := &types.Receipt{
 		PostState:         common.Hash{2}.Bytes(),
 		CumulativeGasUsed: 2,
@@ -353,10 +359,12 @@ func TestBlockReceiptStorage(t *testing.T) {
 			{Address: common.BytesToAddress([]byte{0x22})},
 			{Address: common.BytesToAddress([]byte{0x02, 0x22})},
 		},
-		TxHash:          common.BytesToHash([]byte{0x22, 0x22}),
+		TxHash:          tx2.Hash(),
 		ContractAddress: common.BytesToAddress([]byte{0x02, 0x22, 0x22}),
 		GasUsed:         222222,
 	}
+	receipt2.Bloom = types.CreateBloom(types.Receipts{receipt2})
+
 	receipts := []*types.Receipt{receipt1, receipt2}
 
 	// Check that no receipt entries are in a pristine database

core/error.go

@@ -16,7 +16,11 @@
 
 package core
 
-import "errors"
+import (
+	"errors"
+
+	"github.com/XinFinOrg/XDPoSChain/core/types"
+)
 
 var (
 	// ErrKnownBlock is returned when a block to import is already known locally.
@@ -38,4 +42,8 @@ var (
 	ErrNotFoundM1 = errors.New("list M1 not found ")
 
 	ErrStopPreparingBlock = errors.New("stop calculating a block not verified by M2")
+
+	// ErrTxTypeNotSupported is returned if a transaction is not supported in the
+	// current network configuration.
+	ErrTxTypeNotSupported = types.ErrTxTypeNotSupported
 )

core/events.go

@@ -21,8 +21,8 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 )
 
-// TxPreEvent is posted when a transaction enters the transaction pool.
-type TxPreEvent struct{ Tx *types.Transaction }
+// NewTxsEvent is posted when a batch of transactions enter the transaction pool.
+type NewTxsEvent struct{ Txs []*types.Transaction }
 
 // OrderTxPreEvent is posted when a order transaction enters the order transaction pool.
 type OrderTxPreEvent struct{ Tx *types.OrderTransaction }
@@ -41,9 +41,6 @@ type PendingStateEvent struct{}
 // NewMinedBlockEvent is posted when a block has been imported.
 type NewMinedBlockEvent struct{ Block *types.Block }
 
-// RemovedTransactionEvent is posted when a reorg happens
-type RemovedTransactionEvent struct{ Txs types.Transactions }
-
 // RemovedLogsEvent is posted when a reorg happens
 type RemovedLogsEvent struct{ Logs []*types.Log }
 

core/lending_pool.go

@@ -24,18 +24,16 @@ import (
 	"sync"
 	"time"
 
-	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
-
 	"github.com/XinFinOrg/XDPoSChain/XDCxlending/lendingstate"
-	"github.com/XinFinOrg/XDPoSChain/consensus"
-
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/prque"
+	"github.com/XinFinOrg/XDPoSChain/consensus"
+	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/event"
 	"github.com/XinFinOrg/XDPoSChain/log"
 	"github.com/XinFinOrg/XDPoSChain/params"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 var (
@@ -273,7 +271,7 @@ func (pool *LendingPool) loop() {
 // reset retrieves the current state of the blockchain and ensures the content
 // of the transaction pool is valid with regard to the chain state.
 func (pool *LendingPool) reset(oldHead, newblock *types.Block) {
-	if !pool.chainconfig.IsTIPXDCX(pool.chain.CurrentBlock().Number()) || pool.chain.Config().XDPoS == nil || pool.chain.CurrentBlock().NumberU64() <= pool.chain.Config().XDPoS.Epoch {
+	if !pool.chainconfig.IsTIPXDCXReceiver(pool.chain.CurrentBlock().Number()) || pool.chain.Config().XDPoS == nil || pool.chain.CurrentBlock().NumberU64() <= pool.chain.Config().XDPoS.Epoch {
 		return
 	}
 	// If we're reorging an old state, reinject all dropped transactions
@@ -671,7 +669,7 @@ func (pool *LendingPool) add(tx *types.LendingTransaction, local bool) (bool, er
 	// If the transaction fails basic validation, discard it
 	if err := pool.validateTx(tx, local); err != nil {
 		log.Debug("Discarding invalid lending transaction", "hash", hash, "userAddress", tx.UserAddress, "status", tx.Status, "err", err)
-		invalidTxCounter.Inc(1)
+		invalidTxMeter.Mark(1)
 		return false, err
 	}
 	from, _ := types.LendingSender(pool.signer, tx) // already validated
@@ -685,12 +683,12 @@ func (pool *LendingPool) add(tx *types.LendingTransaction, local bool) (bool, er
 	if list := pool.pending[from]; list != nil && list.Overlaps(tx) {
 		inserted, old := list.Add(tx)
 		if !inserted {
-			pendingDiscardCounter.Inc(1)
+			pendingDiscardMeter.Mark(1)
 			return false, ErrPendingNonceTooLow
 		}
 		if old != nil {
 			delete(pool.all, old.Hash())
-			pendingReplaceCounter.Inc(1)
+			pendingReplaceMeter.Mark(1)
 		}
 		pool.all[tx.Hash()] = tx
 		pool.journalTx(from, tx)
@@ -726,13 +724,13 @@ func (pool *LendingPool) enqueueTx(hash common.Hash, tx *types.LendingTransactio
 	inserted, old := pool.queue[from].Add(tx)
 	if !inserted {
 		// An older transaction was better, discard this
-		queuedDiscardCounter.Inc(1)
+		pendingDiscardMeter.Mark(1)
 		return false, ErrPendingNonceTooLow
 	}
 	// Discard any previous transaction and mark this
 	if old != nil {
 		delete(pool.all, old.Hash())
-		queuedReplaceCounter.Inc(1)
+		queuedReplaceMeter.Mark(1)
 	}
 	pool.all[hash] = tx
 	return old != nil, nil
@@ -764,13 +762,13 @@ func (pool *LendingPool) promoteTx(addr common.Address, hash common.Hash, tx *ty
 	if !inserted {
 		// An older transaction was better, discard this
 		delete(pool.all, hash)
-		pendingDiscardCounter.Inc(1)
+		pendingDiscardMeter.Mark(1)
 		return
 	}
 	// Otherwise discard any previous transaction and mark this
 	if old != nil {
 		delete(pool.all, old.Hash())
-		pendingReplaceCounter.Inc(1)
+		pendingReplaceMeter.Mark(1)
 	}
 	// Failsafe to work around direct pending inserts (tests)
 	if pool.all[hash] == nil {
@@ -814,7 +812,7 @@ func (pool *LendingPool) AddRemotes(txs []*types.LendingTransaction) []error {
 
 // addTx enqueues a single transaction into the pool if it is valid.
 func (pool *LendingPool) addTx(tx *types.LendingTransaction, local bool) error {
-	if !pool.chainconfig.IsTIPXDCX(pool.chain.CurrentBlock().Number()) {
+	if !pool.chainconfig.IsTIPXDCXReceiver(pool.chain.CurrentBlock().Number()) {
 		return nil
 	}
 	tx.CacheHash()
@@ -981,7 +979,7 @@ func (pool *LendingPool) promoteExecutables(accounts []common.Address) {
 				hash := tx.Hash()
 				delete(pool.all, hash)
 
-				queuedRateLimitCounter.Inc(1)
+				queuedRateLimitMeter.Mark(1)
 				log.Trace("Removed cap-exceeding queued transaction", "hash", hash)
 			}
 		}
@@ -998,11 +996,11 @@ func (pool *LendingPool) promoteExecutables(accounts []common.Address) {
 	if pending > pool.config.GlobalSlots {
 		pendingBeforeCap := pending
 		// Assemble a spam order to penalize large transactors first
-		spammers := prque.New()
+		spammers := prque.New(nil)
 		for addr, list := range pool.pending {
 			// Only evict transactions from high rollers
 			if !pool.locals.contains(addr) && uint64(list.Len()) > pool.config.AccountSlots {
-				spammers.Push(addr, float32(list.Len()))
+				spammers.Push(addr, int64(list.Len()))
 			}
 		}
 		// Gradually drop transactions from offenders
@@ -1057,7 +1055,7 @@ func (pool *LendingPool) promoteExecutables(accounts []common.Address) {
 				}
 			}
 		}
-		pendingRateLimitCounter.Inc(int64(pendingBeforeCap - pending))
+		pendingRateLimitMeter.Mark(int64(pendingBeforeCap - pending))
 	}
 	// If we've queued more transactions than the hard limit, drop oldest ones
 	queued := uint64(0)
@@ -1066,7 +1064,7 @@ func (pool *LendingPool) promoteExecutables(accounts []common.Address) {
 	}
 	if queued > pool.config.GlobalQueue {
 		// Sort all accounts with queued transactions by heartbeat
-		addresses := make(addresssByHeartbeat, 0, len(pool.queue))
+		addresses := make(addressesByHeartbeat, 0, len(pool.queue))
 		for addr := range pool.queue {
 			if !pool.locals.contains(addr) { // don't drop locals
 				addresses = append(addresses, addressByHeartbeat{addr, pool.beats[addr]})
@@ -1087,7 +1085,7 @@ func (pool *LendingPool) promoteExecutables(accounts []common.Address) {
 					pool.removeTx(tx.Hash())
 				}
 				drop -= size
-				queuedRateLimitCounter.Inc(int64(size))
+				queuedRateLimitMeter.Mark(int64(size))
 				continue
 			}
 			// Otherwise drop only last few transactions
@@ -1095,7 +1093,7 @@ func (pool *LendingPool) promoteExecutables(accounts []common.Address) {
 			for i := len(txs) - 1; i >= 0 && drop > 0; i-- {
 				pool.removeTx(txs[i].Hash())
 				drop--
-				queuedRateLimitCounter.Inc(1)
+				queuedRateLimitMeter.Mark(1)
 			}
 		}
 	}

core/order_pool.go

@@ -25,16 +25,15 @@ import (
 	"time"
 
 	"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/prque"
 	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
-
-	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/event"
 	"github.com/XinFinOrg/XDPoSChain/log"
 	"github.com/XinFinOrg/XDPoSChain/params"
-	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
 )
 
 var (
@@ -278,7 +277,7 @@ func (pool *OrderPool) loop() {
 // reset retrieves the current state of the blockchain and ensures the content
 // of the transaction pool is valid with regard to the chain state.
 func (pool *OrderPool) reset(oldHead, newblock *types.Block) {
-	if !pool.chainconfig.IsTIPXDCX(pool.chain.CurrentBlock().Number()) || pool.chain.Config().XDPoS == nil || pool.chain.CurrentBlock().NumberU64() <= pool.chain.Config().XDPoS.Epoch {
+	if !pool.chainconfig.IsTIPXDCXReceiver(pool.chain.CurrentBlock().Number()) || pool.chain.Config().XDPoS == nil || pool.chain.CurrentBlock().NumberU64() <= pool.chain.Config().XDPoS.Epoch {
 		return
 	}
 	// If we're reorging an old state, reinject all dropped transactions
@@ -579,7 +578,7 @@ func (pool *OrderPool) add(tx *types.OrderTransaction, local bool) (bool, error)
 	// If the transaction fails basic validation, discard it
 	if err := pool.validateTx(tx, local); err != nil {
 		log.Debug("Discarding invalid order transaction", "hash", hash, "userAddress", tx.UserAddress().Hex(), "status", tx.Status, "err", err)
-		invalidTxCounter.Inc(1)
+		invalidTxMeter.Mark(1)
 		return false, err
 	}
 	from, _ := types.OrderSender(pool.signer, tx) // already validated
@@ -593,12 +592,12 @@ func (pool *OrderPool) add(tx *types.OrderTransaction, local bool) (bool, error)
 	if list := pool.pending[from]; list != nil && list.Overlaps(tx) {
 		inserted, old := list.Add(tx)
 		if !inserted {
-			pendingDiscardCounter.Inc(1)
+			pendingDiscardMeter.Mark(1)
 			return false, ErrPendingNonceTooLow
 		}
 		if old != nil {
 			delete(pool.all, old.Hash())
-			pendingReplaceCounter.Inc(1)
+			pendingReplaceMeter.Mark(1)
 		}
 		pool.all[tx.Hash()] = tx
 		pool.journalTx(from, tx)
@@ -636,13 +635,13 @@ func (pool *OrderPool) enqueueTx(hash common.Hash, tx *types.OrderTransaction) (
 	inserted, old := pool.queue[from].Add(tx)
 	if !inserted {
 		// An older transaction was better, discard this
-		queuedDiscardCounter.Inc(1)
+		queuedDiscardMeter.Mark(1)
 		return false, ErrPendingNonceTooLow
 	}
 	// Discard any previous transaction and mark this
 	if old != nil {
 		delete(pool.all, old.Hash())
-		queuedReplaceCounter.Inc(1)
+		queuedReplaceMeter.Mark(1)
 	}
 	pool.all[hash] = tx
 	return old != nil, nil
@@ -675,13 +674,13 @@ func (pool *OrderPool) promoteTx(addr common.Address, hash common.Hash, tx *type
 	if !inserted {
 		// An older transaction was better, discard this
 		delete(pool.all, hash)
-		pendingDiscardCounter.Inc(1)
+		pendingDiscardMeter.Mark(1)
 		return
 	}
 	// Otherwise discard any previous transaction and mark this
 	if old != nil {
 		delete(pool.all, old.Hash())
-		pendingReplaceCounter.Inc(1)
+		pendingReplaceMeter.Mark(1)
 	}
 	// Failsafe to work around direct pending inserts (tests)
 	if pool.all[hash] == nil {
@@ -729,7 +728,7 @@ func (pool *OrderPool) AddRemotes(txs []*types.OrderTransaction) []error {
 
 // addTx enqueues a single transaction into the pool if it is valid.
 func (pool *OrderPool) addTx(tx *types.OrderTransaction, local bool) error {
-	if !pool.chainconfig.IsTIPXDCX(pool.chain.CurrentBlock().Number()) {
+	if !pool.chainconfig.IsTIPXDCXReceiver(pool.chain.CurrentBlock().Number()) {
 		return nil
 	}
 	tx.CacheHash()
@@ -896,7 +895,7 @@ func (pool *OrderPool) promoteExecutables(accounts []common.Address) {
 				hash := tx.Hash()
 				delete(pool.all, hash)
 
-				queuedRateLimitCounter.Inc(1)
+				queuedRateLimitMeter.Mark(1)
 				log.Debug("Removed cap-exceeding queued transaction", "addr", tx.UserAddress().Hex(), "nonce", tx.Nonce(), "ohash", tx.OrderHash().Hex(), "status", tx.Status(), "orderid", tx.OrderID())
 			}
 		}
@@ -914,11 +913,11 @@ func (pool *OrderPool) promoteExecutables(accounts []common.Address) {
 	if pending > pool.config.GlobalSlots {
 		pendingBeforeCap := pending
 		// Assemble a spam order to penalize large transactors first
-		spammers := prque.New()
+		spammers := prque.New(nil)
 		for addr, list := range pool.pending {
 			// Only evict transactions from high rollers
 			if !pool.locals.contains(addr) && uint64(list.Len()) > pool.config.AccountSlots {
-				spammers.Push(addr, float32(list.Len()))
+				spammers.Push(addr, int64(list.Len()))
 			}
 		}
 		// Gradually drop transactions from offenders
@@ -973,7 +972,7 @@ func (pool *OrderPool) promoteExecutables(accounts []common.Address) {
 				}
 			}
 		}
-		pendingRateLimitCounter.Inc(int64(pendingBeforeCap - pending))
+		pendingRateLimitMeter.Mark(int64(pendingBeforeCap - pending))
 	}
 	// If we've queued more transactions than the hard limit, drop oldest ones
 	queued := uint64(0)
@@ -982,7 +981,7 @@ func (pool *OrderPool) promoteExecutables(accounts []common.Address) {
 	}
 	if queued > pool.config.GlobalQueue {
 		// Sort all accounts with queued transactions by heartbeat
-		addresses := make(addresssByHeartbeat, 0, len(pool.queue))
+		addresses := make(addressesByHeartbeat, 0, len(pool.queue))
 		for addr := range pool.queue {
 			if !pool.locals.contains(addr) { // don't drop locals
 				addresses = append(addresses, addressByHeartbeat{addr, pool.beats[addr]})
@@ -1003,7 +1002,7 @@ func (pool *OrderPool) promoteExecutables(accounts []common.Address) {
 					pool.removeTx(tx.Hash())
 				}
 				drop -= size
-				queuedRateLimitCounter.Inc(int64(size))
+				queuedRateLimitMeter.Mark(int64(size))
 				continue
 			}
 			// Otherwise drop only last few transactions
@@ -1011,7 +1010,7 @@ func (pool *OrderPool) promoteExecutables(accounts []common.Address) {
 			for i := len(txs) - 1; i >= 0 && drop > 0; i-- {
 				pool.removeTx(txs[i].Hash())
 				drop--
-				queuedRateLimitCounter.Inc(1)
+				queuedRateLimitMeter.Mark(1)
 			}
 		}
 	}

core/state/access_list.go

@@ -0,0 +1,136 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package state
+
+import (
+	"github.com/XinFinOrg/XDPoSChain/common"
+)
+
+type accessList struct {
+	addresses map[common.Address]int
+	slots     []map[common.Hash]struct{}
+}
+
+// ContainsAddress returns true if the address is in the access list.
+func (al *accessList) ContainsAddress(address common.Address) bool {
+	_, ok := al.addresses[address]
+	return ok
+}
+
+// Contains checks if a slot within an account is present in the access list, returning
+// separate flags for the presence of the account and the slot respectively.
+func (al *accessList) Contains(address common.Address, slot common.Hash) (addressPresent bool, slotPresent bool) {
+	idx, ok := al.addresses[address]
+	if !ok {
+		// no such address (and hence zero slots)
+		return false, false
+	}
+	if idx == -1 {
+		// address yes, but no slots
+		return true, false
+	}
+	_, slotPresent = al.slots[idx][slot]
+	return true, slotPresent
+}
+
+// newAccessList creates a new accessList.
+func newAccessList() *accessList {
+	return &accessList{
+		addresses: make(map[common.Address]int),
+	}
+}
+
+// Copy creates an independent copy of an accessList.
+func (a *accessList) Copy() *accessList {
+	cp := newAccessList()
+	for k, v := range a.addresses {
+		cp.addresses[k] = v
+	}
+	cp.slots = make([]map[common.Hash]struct{}, len(a.slots))
+	for i, slotMap := range a.slots {
+		newSlotmap := make(map[common.Hash]struct{}, len(slotMap))
+		for k := range slotMap {
+			newSlotmap[k] = struct{}{}
+		}
+		cp.slots[i] = newSlotmap
+	}
+	return cp
+}
+
+// AddAddress adds an address to the access list, and returns 'true' if the operation
+// caused a change (addr was not previously in the list).
+func (al *accessList) AddAddress(address common.Address) bool {
+	if _, present := al.addresses[address]; present {
+		return false
+	}
+	al.addresses[address] = -1
+	return true
+}
+
+// AddSlot adds the specified (addr, slot) combo to the access list.
+// Return values are:
+// - address added
+// - slot added
+// For any 'true' value returned, a corresponding journal entry must be made.
+func (al *accessList) AddSlot(address common.Address, slot common.Hash) (addrChange bool, slotChange bool) {
+	idx, addrPresent := al.addresses[address]
+	if !addrPresent || idx == -1 {
+		// Address not present, or addr present but no slots there
+		al.addresses[address] = len(al.slots)
+		slotmap := map[common.Hash]struct{}{slot: {}}
+		al.slots = append(al.slots, slotmap)
+		return !addrPresent, true
+	}
+	// There is already an (address,slot) mapping
+	slotmap := al.slots[idx]
+	if _, ok := slotmap[slot]; !ok {
+		slotmap[slot] = struct{}{}
+		// Journal add slot change
+		return false, true
+	}
+	// No changes required
+	return false, false
+}
+
+// DeleteSlot removes an (address, slot)-tuple from the access list.
+// This operation needs to be performed in the same order as the addition happened.
+// This method is meant to be used  by the journal, which maintains ordering of
+// operations.
+func (al *accessList) DeleteSlot(address common.Address, slot common.Hash) {
+	idx, addrOk := al.addresses[address]
+	// There are two ways this can fail
+	if !addrOk {
+		panic("reverting slot change, address not present in list")
+	}
+	slotmap := al.slots[idx]
+	delete(slotmap, slot)
+	// If that was the last (first) slot, remove it
+	// Since additions and rollbacks are always performed in order,
+	// we can delete the item without worrying about screwing up later indices
+	if len(slotmap) == 0 {
+		al.slots = al.slots[:idx]
+		al.addresses[address] = -1
+	}
+}
+
+// DeleteAddress removes an address from the access list. This operation
+// needs to be performed in the same order as the addition happened.
+// This method is meant to be used  by the journal, which maintains ordering of
+// operations.
+func (al *accessList) DeleteAddress(address common.Address) {
+	delete(al.addresses, address)
+}

core/state/journal.go

@@ -28,6 +28,11 @@ type journalEntry interface {
 
 type journal []journalEntry
 
+// length returns the current number of entries in the journal.
+func (j *journal) length() int {
+	return len(*j)
+}
+
 type (
 	// Changes to the account trie.
 	createObjectChange struct {
@@ -75,6 +80,14 @@ type (
 		prev      bool
 		prevDirty bool
 	}
+	// Changes to the access list
+	accessListAddAccountChange struct {
+		address *common.Address
+	}
+	accessListAddSlotChange struct {
+		address *common.Address
+		slot    *common.Hash
+	}
 )
 
 func (ch createObjectChange) undo(s *StateDB) {
@@ -138,3 +151,20 @@ func (ch addLogChange) undo(s *StateDB) {
 func (ch addPreimageChange) undo(s *StateDB) {
 	delete(s.preimages, ch.hash)
 }
+
+func (ch accessListAddAccountChange) undo(s *StateDB) {
+	/*
+		One important invariant here, is that whenever a (addr, slot) is added, if the
+		addr is not already present, the add causes two journal entries:
+		- one for the address,
+		- one for the (address,slot)
+		Therefore, when unrolling the change, we can always blindly delete the
+		(addr) at this point, since no storage adds can remain when come upon
+		a single (addr) change.
+	*/
+	s.accessList.DeleteAddress(*ch.address)
+}
+
+func (ch accessListAddSlotChange) undo(s *StateDB) {
+	s.accessList.DeleteSlot(*ch.address, *ch.slot)
+}

core/state/managed_state.go

@@ -1,143 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package state
-
-import (
-	"sync"
-
-	"github.com/XinFinOrg/XDPoSChain/common"
-)
-
-type account struct {
-	stateObject *stateObject
-	nstart      uint64
-	nonces      []bool
-}
-
-type ManagedState struct {
-	*StateDB
-
-	mu sync.RWMutex
-
-	accounts map[common.Address]*account
-}
-
-// ManagedState returns a new managed state with the statedb as it's backing layer
-func ManageState(statedb *StateDB) *ManagedState {
-	return &ManagedState{
-		StateDB:  statedb.Copy(),
-		accounts: make(map[common.Address]*account),
-	}
-}
-
-// SetState sets the backing layer of the managed state
-func (ms *ManagedState) SetState(statedb *StateDB) {
-	ms.mu.Lock()
-	defer ms.mu.Unlock()
-	ms.StateDB = statedb
-}
-
-// RemoveNonce removed the nonce from the managed state and all future pending nonces
-func (ms *ManagedState) RemoveNonce(addr common.Address, n uint64) {
-	if ms.hasAccount(addr) {
-		ms.mu.Lock()
-		defer ms.mu.Unlock()
-
-		account := ms.getAccount(addr)
-		if n-account.nstart <= uint64(len(account.nonces)) {
-			reslice := make([]bool, n-account.nstart)
-			copy(reslice, account.nonces[:n-account.nstart])
-			account.nonces = reslice
-		}
-	}
-}
-
-// NewNonce returns the new canonical nonce for the managed account
-func (ms *ManagedState) NewNonce(addr common.Address) uint64 {
-	ms.mu.Lock()
-	defer ms.mu.Unlock()
-
-	account := ms.getAccount(addr)
-	for i, nonce := range account.nonces {
-		if !nonce {
-			return account.nstart + uint64(i)
-		}
-	}
-	account.nonces = append(account.nonces, true)
-
-	return uint64(len(account.nonces)-1) + account.nstart
-}
-
-// GetNonce returns the canonical nonce for the managed or unmanaged account.
-//
-// Because GetNonce mutates the DB, we must take a write lock.
-func (ms *ManagedState) GetNonce(addr common.Address) uint64 {
-	ms.mu.Lock()
-	defer ms.mu.Unlock()
-
-	if ms.hasAccount(addr) {
-		account := ms.getAccount(addr)
-		return uint64(len(account.nonces)) + account.nstart
-	} else {
-		return ms.StateDB.GetNonce(addr)
-	}
-}
-
-// SetNonce sets the new canonical nonce for the managed state
-func (ms *ManagedState) SetNonce(addr common.Address, nonce uint64) {
-	ms.mu.Lock()
-	defer ms.mu.Unlock()
-
-	so := ms.GetOrNewStateObject(addr)
-	so.SetNonce(nonce)
-
-	ms.accounts[addr] = newAccount(so)
-}
-
-// HasAccount returns whether the given address is managed or not
-func (ms *ManagedState) HasAccount(addr common.Address) bool {
-	ms.mu.RLock()
-	defer ms.mu.RUnlock()
-	return ms.hasAccount(addr)
-}
-
-func (ms *ManagedState) hasAccount(addr common.Address) bool {
-	_, ok := ms.accounts[addr]
-	return ok
-}
-
-// populate the managed state
-func (ms *ManagedState) getAccount(addr common.Address) *account {
-	if account, ok := ms.accounts[addr]; !ok {
-		so := ms.GetOrNewStateObject(addr)
-		ms.accounts[addr] = newAccount(so)
-	} else {
-		// Always make sure the state account nonce isn't actually higher
-		// than the tracked one.
-		so := ms.StateDB.getStateObject(addr)
-		if so != nil && uint64(len(account.nonces))+account.nstart < so.Nonce() {
-			ms.accounts[addr] = newAccount(so)
-		}
-
-	}
-
-	return ms.accounts[addr]
-}
-
-func newAccount(so *stateObject) *account {
-	return &account{so, so.Nonce(), nil}
-}

core/state/managed_state_test.go

@@ -1,124 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package state
-
-import (
-	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
-	"testing"
-
-	"github.com/XinFinOrg/XDPoSChain/common"
-)
-
-var addr = common.BytesToAddress([]byte("test"))
-
-func create() (*ManagedState, *account) {
-	db := rawdb.NewMemoryDatabase()
-	statedb, _ := New(common.Hash{}, NewDatabase(db))
-	ms := ManageState(statedb)
-	ms.StateDB.SetNonce(addr, 100)
-	ms.accounts[addr] = newAccount(ms.StateDB.getStateObject(addr))
-	return ms, ms.accounts[addr]
-}
-
-func TestNewNonce(t *testing.T) {
-	ms, _ := create()
-
-	nonce := ms.NewNonce(addr)
-	if nonce != 100 {
-		t.Error("expected nonce 100. got", nonce)
-	}
-
-	nonce = ms.NewNonce(addr)
-	if nonce != 101 {
-		t.Error("expected nonce 101. got", nonce)
-	}
-}
-
-func TestRemove(t *testing.T) {
-	ms, account := create()
-
-	nn := make([]bool, 10)
-	for i := range nn {
-		nn[i] = true
-	}
-	account.nonces = append(account.nonces, nn...)
-
-	i := uint64(5)
-	ms.RemoveNonce(addr, account.nstart+i)
-	if len(account.nonces) != 5 {
-		t.Error("expected", i, "'th index to be false")
-	}
-}
-
-func TestReuse(t *testing.T) {
-	ms, account := create()
-
-	nn := make([]bool, 10)
-	for i := range nn {
-		nn[i] = true
-	}
-	account.nonces = append(account.nonces, nn...)
-
-	i := uint64(5)
-	ms.RemoveNonce(addr, account.nstart+i)
-	nonce := ms.NewNonce(addr)
-	if nonce != 105 {
-		t.Error("expected nonce to be 105. got", nonce)
-	}
-}
-
-func TestRemoteNonceChange(t *testing.T) {
-	ms, account := create()
-	nn := make([]bool, 10)
-	for i := range nn {
-		nn[i] = true
-	}
-	account.nonces = append(account.nonces, nn...)
-	ms.NewNonce(addr)
-
-	ms.StateDB.stateObjects[addr].data.Nonce = 200
-	nonce := ms.NewNonce(addr)
-	if nonce != 200 {
-		t.Error("expected nonce after remote update to be", 200, "got", nonce)
-	}
-	ms.NewNonce(addr)
-	ms.NewNonce(addr)
-	ms.NewNonce(addr)
-	ms.StateDB.stateObjects[addr].data.Nonce = 200
-	nonce = ms.NewNonce(addr)
-	if nonce != 204 {
-		t.Error("expected nonce after remote update to be", 204, "got", nonce)
-	}
-}
-
-func TestSetNonce(t *testing.T) {
-	ms, _ := create()
-
-	var addr common.Address
-	ms.SetNonce(addr, 10)
-
-	if ms.GetNonce(addr) != 10 {
-		t.Error("Expected nonce of 10, got", ms.GetNonce(addr))
-	}
-
-	addr[0] = 1
-	ms.StateDB.SetNonce(addr, 1)
-
-	if ms.GetNonce(addr) != 1 {
-		t.Error("Expected nonce of 1, got", ms.GetNonce(addr))
-	}
-}

core/state/state_object.go

@@ -31,23 +31,23 @@ var emptyCodeHash = crypto.Keccak256(nil)
 
 type Code []byte
 
-func (self Code) String() string {
-	return string(self) //strings.Join(Disassemble(self), " ")
+func (c Code) String() string {
+	return string(c) //strings.Join(Disassemble(c), " ")
 }
 
 type Storage map[common.Hash]common.Hash
 
-func (self Storage) String() (str string) {
-	for key, value := range self {
+func (s Storage) String() (str string) {
+	for key, value := range s {
 		str += fmt.Sprintf("%X : %X\n", key, value)
 	}
 
 	return
 }
 
-func (self Storage) Copy() Storage {
+func (s Storage) Copy() Storage {
 	cpy := make(Storage)
-	for key, value := range self {
+	for key, value := range s {
 		cpy[key] = value
 	}
 
@@ -79,6 +79,7 @@ type stateObject struct {
 
 	cachedStorage Storage // Storage entry cache to avoid duplicate reads
 	dirtyStorage  Storage // Storage entries that need to be flushed to disk
+	fakeStorage   Storage // Fake storage which constructed by caller for debugging purpose.
 
 	// Cache flags.
 	// When an object is marked suicided it will be delete from the trie
@@ -124,199 +125,236 @@ func newObject(db *StateDB, address common.Address, data Account, onDirty func(a
 }
 
 // EncodeRLP implements rlp.Encoder.
-func (c *stateObject) EncodeRLP(w io.Writer) error {
-	return rlp.Encode(w, c.data)
+func (s *stateObject) EncodeRLP(w io.Writer) error {
+	return rlp.Encode(w, s.data)
 }
 
 // setError remembers the first non-nil error it is called with.
-func (self *stateObject) setError(err error) {
-	if self.dbErr == nil {
-		self.dbErr = err
+func (s *stateObject) setError(err error) {
+	if s.dbErr == nil {
+		s.dbErr = err
 	}
 }
 
-func (self *stateObject) markSuicided() {
-	self.suicided = true
-	if self.onDirty != nil {
-		self.onDirty(self.Address())
-		self.onDirty = nil
+func (s *stateObject) markSuicided() {
+	s.suicided = true
+	if s.onDirty != nil {
+		s.onDirty(s.Address())
+		s.onDirty = nil
 	}
 }
 
-func (c *stateObject) touch() {
-	c.db.journal = append(c.db.journal, touchChange{
-		account:   &c.address,
-		prev:      c.touched,
-		prevDirty: c.onDirty == nil,
+func (s *stateObject) touch() {
+	s.db.journal = append(s.db.journal, touchChange{
+		account:   &s.address,
+		prev:      s.touched,
+		prevDirty: s.onDirty == nil,
 	})
-	if c.onDirty != nil {
-		c.onDirty(c.Address())
-		c.onDirty = nil
+	if s.onDirty != nil {
+		s.onDirty(s.Address())
+		s.onDirty = nil
 	}
-	c.touched = true
+	s.touched = true
 }
 
-func (c *stateObject) getTrie(db Database) Trie {
-	if c.trie == nil {
+func (s *stateObject) getTrie(db Database) Trie {
+	if s.trie == nil {
 		var err error
-		c.trie, err = db.OpenStorageTrie(c.addrHash, c.data.Root)
+		s.trie, err = db.OpenStorageTrie(s.addrHash, s.data.Root)
 		if err != nil {
-			c.trie, _ = db.OpenStorageTrie(c.addrHash, common.Hash{})
-			c.setError(fmt.Errorf("can't create storage trie: %v", err))
+			s.trie, _ = db.OpenStorageTrie(s.addrHash, common.Hash{})
+			s.setError(fmt.Errorf("can't create storage trie: %v", err))
 		}
 	}
-	return c.trie
+	return s.trie
 }
 
-func (self *stateObject) GetCommittedState(db Database, key common.Hash) common.Hash {
+func (s *stateObject) GetCommittedState(db Database, key common.Hash) common.Hash {
+	// If the fake storage is set, only lookup the state here(in the debugging mode)
+	if s.fakeStorage != nil {
+		return s.fakeStorage[key]
+	}
 	value := common.Hash{}
 	// Load from DB in case it is missing.
-	enc, err := self.getTrie(db).TryGet(key[:])
+	enc, err := s.getTrie(db).TryGet(key[:])
 	if err != nil {
-		self.setError(err)
+		s.setError(err)
 		return common.Hash{}
 	}
 	if len(enc) > 0 {
 		_, content, _, err := rlp.Split(enc)
 		if err != nil {
-			self.setError(err)
+			s.setError(err)
 		}
 		value.SetBytes(content)
 	}
 	return value
 }
 
-func (self *stateObject) GetState(db Database, key common.Hash) common.Hash {
-	value, exists := self.cachedStorage[key]
+func (s *stateObject) GetState(db Database, key common.Hash) common.Hash {
+	// If the fake storage is set, only lookup the state here(in the debugging mode)
+	if s.fakeStorage != nil {
+		return s.fakeStorage[key]
+	}
+	value, exists := s.cachedStorage[key]
 	if exists {
 		return value
 	}
 	// Load from DB in case it is missing.
-	enc, err := self.getTrie(db).TryGet(key[:])
+	enc, err := s.getTrie(db).TryGet(key[:])
 	if err != nil {
-		self.setError(err)
+		s.setError(err)
 		return common.Hash{}
 	}
 	if len(enc) > 0 {
 		_, content, _, err := rlp.Split(enc)
 		if err != nil {
-			self.setError(err)
+			s.setError(err)
 		}
 		value.SetBytes(content)
 	}
 	if (value != common.Hash{}) {
-		self.cachedStorage[key] = value
+		s.cachedStorage[key] = value
 	}
 	return value
 }
 
 // SetState updates a value in account storage.
-func (self *stateObject) SetState(db Database, key, value common.Hash) {
-	self.db.journal = append(self.db.journal, storageChange{
-		account:  &self.address,
+func (s *stateObject) SetState(db Database, key, value common.Hash) {
+	// If the fake storage is set, put the temporary state update here.
+	if s.fakeStorage != nil {
+		s.fakeStorage[key] = value
+		return
+	}
+	// If the new value is the same as old, don't set
+	prev := s.GetState(db, key)
+	if prev == value {
+		return
+	}
+	// New value is different, update and journal the change
+	s.db.journal = append(s.db.journal, storageChange{
+		account:  &s.address,
 		key:      key,
-		prevalue: self.GetState(db, key),
+		prevalue: prev,
 	})
-	self.setState(key, value)
+	s.setState(key, value)
 }
 
-func (self *stateObject) setState(key, value common.Hash) {
-	self.cachedStorage[key] = value
-	self.dirtyStorage[key] = value
+// SetStorage replaces the entire state storage with the given one.
+//
+// After this function is called, all original state will be ignored and state
+// lookup only happens in the fake state storage.
+//
+// Note this function should only be used for debugging purpose.
+func (s *stateObject) SetStorage(storage map[common.Hash]common.Hash) {
+	// Allocate fake storage if it's nil.
+	if s.fakeStorage == nil {
+		s.fakeStorage = make(Storage)
+	}
+	for key, value := range storage {
+		s.fakeStorage[key] = value
+	}
+	// Don't bother journal since this function should only be used for
+	// debugging and the `fake` storage won't be committed to database.
+}
 
-	if self.onDirty != nil {
-		self.onDirty(self.Address())
-		self.onDirty = nil
+func (s *stateObject) setState(key, value common.Hash) {
+	s.cachedStorage[key] = value
+	s.dirtyStorage[key] = value
+
+	if s.onDirty != nil {
+		s.onDirty(s.Address())
+		s.onDirty = nil
 	}
 }
 
 // updateTrie writes cached storage modifications into the object's storage trie.
-func (self *stateObject) updateTrie(db Database) Trie {
-	tr := self.getTrie(db)
-	for key, value := range self.dirtyStorage {
-		delete(self.dirtyStorage, key)
+func (s *stateObject) updateTrie(db Database) Trie {
+	tr := s.getTrie(db)
+	for key, value := range s.dirtyStorage {
+		delete(s.dirtyStorage, key)
 		if (value == common.Hash{}) {
-			self.setError(tr.TryDelete(key[:]))
+			s.setError(tr.TryDelete(key[:]))
 			continue
 		}
 		// Encoding []byte cannot fail, ok to ignore the error.
 		v, _ := rlp.EncodeToBytes(bytes.TrimLeft(value[:], "\x00"))
-		self.setError(tr.TryUpdate(key[:], v))
+		s.setError(tr.TryUpdate(key[:], v))
 	}
 	return tr
 }
 
 // UpdateRoot sets the trie root to the current root hash of
-func (self *stateObject) updateRoot(db Database) {
-	self.updateTrie(db)
-	self.data.Root = self.trie.Hash()
+func (s *stateObject) updateRoot(db Database) {
+	s.updateTrie(db)
+	s.data.Root = s.trie.Hash()
 }
 
 // CommitTrie the storage trie of the object to dwb.
 // This updates the trie root.
-func (self *stateObject) CommitTrie(db Database) error {
-	self.updateTrie(db)
-	if self.dbErr != nil {
-		return self.dbErr
+func (s *stateObject) CommitTrie(db Database) error {
+	s.updateTrie(db)
+	if s.dbErr != nil {
+		return s.dbErr
 	}
-	root, err := self.trie.Commit(nil)
+	root, err := s.trie.Commit(nil)
 	if err == nil {
-		self.data.Root = root
+		s.data.Root = root
 	}
 	return err
 }
 
 // AddBalance removes amount from c's balance.
 // It is used to add funds to the destination account of a transfer.
-func (c *stateObject) AddBalance(amount *big.Int) {
+func (s *stateObject) AddBalance(amount *big.Int) {
 	// EIP158: We must check emptiness for the objects such that the account
 	// clearing (0,0,0 objects) can take effect.
 	if amount.Sign() == 0 {
-		if c.empty() {
-			c.touch()
+		if s.empty() {
+			s.touch()
 		}
 
 		return
 	}
-	c.SetBalance(new(big.Int).Add(c.Balance(), amount))
+	s.SetBalance(new(big.Int).Add(s.Balance(), amount))
 }
 
 // SubBalance removes amount from c's balance.
 // It is used to remove funds from the origin account of a transfer.
-func (c *stateObject) SubBalance(amount *big.Int) {
+func (s *stateObject) SubBalance(amount *big.Int) {
 	if amount.Sign() == 0 {
 		return
 	}
-	c.SetBalance(new(big.Int).Sub(c.Balance(), amount))
+	s.SetBalance(new(big.Int).Sub(s.Balance(), amount))
 }
 
-func (self *stateObject) SetBalance(amount *big.Int) {
-	self.db.journal = append(self.db.journal, balanceChange{
-		account: &self.address,
-		prev:    new(big.Int).Set(self.data.Balance),
+func (s *stateObject) SetBalance(amount *big.Int) {
+	s.db.journal = append(s.db.journal, balanceChange{
+		account: &s.address,
+		prev:    new(big.Int).Set(s.data.Balance),
 	})
-	self.setBalance(amount)
+	s.setBalance(amount)
 }
 
-func (self *stateObject) setBalance(amount *big.Int) {
-	self.data.Balance = amount
-	if self.onDirty != nil {
-		self.onDirty(self.Address())
-		self.onDirty = nil
+func (s *stateObject) setBalance(amount *big.Int) {
+	s.data.Balance = amount
+	if s.onDirty != nil {
+		s.onDirty(s.Address())
+		s.onDirty = nil
 	}
 }
 
-func (self *stateObject) deepCopy(db *StateDB, onDirty func(addr common.Address)) *stateObject {
-	stateObject := newObject(db, self.address, self.data, onDirty)
-	if self.trie != nil {
-		stateObject.trie = db.db.CopyTrie(self.trie)
+func (s *stateObject) deepCopy(db *StateDB, onDirty func(addr common.Address)) *stateObject {
+	stateObject := newObject(db, s.address, s.data, onDirty)
+	if s.trie != nil {
+		stateObject.trie = db.db.CopyTrie(s.trie)
 	}
-	stateObject.code = self.code
-	stateObject.dirtyStorage = self.dirtyStorage.Copy()
-	stateObject.cachedStorage = self.dirtyStorage.Copy()
-	stateObject.suicided = self.suicided
-	stateObject.dirtyCode = self.dirtyCode
-	stateObject.deleted = self.deleted
+	stateObject.code = s.code
+	stateObject.dirtyStorage = s.dirtyStorage.Copy()
+	stateObject.cachedStorage = s.dirtyStorage.Copy()
+	stateObject.suicided = s.suicided
+	stateObject.dirtyCode = s.dirtyCode
+	stateObject.deleted = s.deleted
 	return stateObject
 }
 
@@ -325,81 +363,81 @@ func (self *stateObject) deepCopy(db *StateDB, onDirty func(addr common.Address)
 //
 
 // Returns the address of the contract/account
-func (c *stateObject) Address() common.Address {
-	return c.address
+func (s *stateObject) Address() common.Address {
+	return s.address
 }
 
 // Code returns the contract code associated with this object, if any.
-func (self *stateObject) Code(db Database) []byte {
-	if self.code != nil {
-		return self.code
+func (s *stateObject) Code(db Database) []byte {
+	if s.code != nil {
+		return s.code
 	}
-	if bytes.Equal(self.CodeHash(), emptyCodeHash) {
+	if bytes.Equal(s.CodeHash(), emptyCodeHash) {
 		return nil
 	}
-	code, err := db.ContractCode(self.addrHash, common.BytesToHash(self.CodeHash()))
+	code, err := db.ContractCode(s.addrHash, common.BytesToHash(s.CodeHash()))
 	if err != nil {
-		self.setError(fmt.Errorf("can't load code hash %x: %v", self.CodeHash(), err))
+		s.setError(fmt.Errorf("can't load code hash %x: %v", s.CodeHash(), err))
 	}
-	self.code = code
+	s.code = code
 	return code
 }
 
-func (self *stateObject) SetCode(codeHash common.Hash, code []byte) {
-	prevcode := self.Code(self.db.db)
-	self.db.journal = append(self.db.journal, codeChange{
-		account:  &self.address,
-		prevhash: self.CodeHash(),
+func (s *stateObject) SetCode(codeHash common.Hash, code []byte) {
+	prevcode := s.Code(s.db.db)
+	s.db.journal = append(s.db.journal, codeChange{
+		account:  &s.address,
+		prevhash: s.CodeHash(),
 		prevcode: prevcode,
 	})
-	self.setCode(codeHash, code)
+	s.setCode(codeHash, code)
 }
 
-func (self *stateObject) setCode(codeHash common.Hash, code []byte) {
-	self.code = code
-	self.data.CodeHash = codeHash[:]
-	self.dirtyCode = true
-	if self.onDirty != nil {
-		self.onDirty(self.Address())
-		self.onDirty = nil
+func (s *stateObject) setCode(codeHash common.Hash, code []byte) {
+	s.code = code
+	s.data.CodeHash = codeHash[:]
+	s.dirtyCode = true
+	if s.onDirty != nil {
+		s.onDirty(s.Address())
+		s.onDirty = nil
 	}
 }
 
-func (self *stateObject) SetNonce(nonce uint64) {
-	self.db.journal = append(self.db.journal, nonceChange{
-		account: &self.address,
-		prev:    self.data.Nonce,
+func (s *stateObject) SetNonce(nonce uint64) {
+	s.db.journal = append(s.db.journal, nonceChange{
+		account: &s.address,
+		prev:    s.data.Nonce,
 	})
-	self.setNonce(nonce)
+	s.setNonce(nonce)
 }
 
-func (self *stateObject) setNonce(nonce uint64) {
-	self.data.Nonce = nonce
-	if self.onDirty != nil {
-		self.onDirty(self.Address())
-		self.onDirty = nil
+func (s *stateObject) setNonce(nonce uint64) {
+	s.data.Nonce = nonce
+	if s.onDirty != nil {
+		s.onDirty(s.Address())
+		s.onDirty = nil
 	}
 }
 
-func (self *stateObject) CodeHash() []byte {
-	return self.data.CodeHash
+func (s *stateObject) CodeHash() []byte {
+	return s.data.CodeHash
 }
 
-func (self *stateObject) Balance() *big.Int {
-	return self.data.Balance
+func (s *stateObject) Balance() *big.Int {
+	return s.data.Balance
 }
 
-func (self *stateObject) Nonce() uint64 {
-	return self.data.Nonce
+func (s *stateObject) Nonce() uint64 {
+	return s.data.Nonce
 }
 
-func (self *stateObject) Root() common.Hash {
-	return self.data.Root
+func (s *stateObject) Root() common.Hash {
+	return s.data.Root
 }
 
 // Never called, but must be present to allow stateObject to be used
 // as a vm.Account interface that also satisfies the vm.ContractRef
 // interface. Interfaces are awesome.
-func (self *stateObject) Value() *big.Int {
+func (s *stateObject) Value() *big.Int {
 	panic("Value on stateObject should never be called")
 }

core/state/statedb.go

@@ -74,6 +74,9 @@ type StateDB struct {
 
 	preimages map[common.Hash][]byte
 
+	// Per-transaction access list
+	accessList *accessList
+
 	// Journal of state modifications. This is the backbone of
 	// Snapshot and RevertToSnapshot.
 	journal        journal
@@ -121,6 +124,7 @@ func New(root common.Hash, db Database) (*StateDB, error) {
 		stateObjectsDirty: make(map[common.Address]struct{}),
 		logs:              make(map[common.Hash][]*types.Log),
 		preimages:         make(map[common.Hash][]byte),
+		accessList:        newAccessList(),
 	}, nil
 }
 
@@ -152,6 +156,7 @@ func (self *StateDB) Reset(root common.Hash) error {
 	self.logSize = 0
 	self.preimages = make(map[common.Hash][]byte)
 	self.clearJournalAndRefund()
+	self.accessList = newAccessList()
 	return nil
 }
 
@@ -239,6 +244,16 @@ func (self *StateDB) GetStorageRoot(addr common.Address) common.Hash {
 	return common.Hash{}
 }
 
+// TxIndex returns the current transaction index set by Prepare.
+func (self *StateDB) TxIndex() int {
+	return self.txIndex
+}
+
+// BlockHash returns the current block hash set by Prepare.
+func (self *StateDB) BlockHash() common.Hash {
+	return self.bhash
+}
+
 func (self *StateDB) GetCode(addr common.Address) []byte {
 	stateObject := self.getStateObject(addr)
 	if stateObject != nil {
@@ -372,6 +387,15 @@ func (self *StateDB) SetState(addr common.Address, key, value common.Hash) {
 	}
 }
 
+// SetStorage replaces the entire storage for the specified account with given
+// storage. This function should only be used for debugging.
+func (s *StateDB) SetStorage(addr common.Address, storage map[common.Hash]common.Hash) {
+	stateObject := s.GetOrNewStateObject(addr)
+	if stateObject != nil {
+		stateObject.SetStorage(storage)
+	}
+}
+
 // Suicide marks the given account as suicided.
 // This clears the account balance.
 //
@@ -489,8 +513,8 @@ func (self *StateDB) createObject(addr common.Address) (newobj, prev *stateObjec
 // CreateAccount is called during the EVM CREATE operation. The situation might arise that
 // a contract does the following:
 //
-//   1. sends funds to sha(account ++ (nonce + 1))
-//   2. tx_create(sha(account ++ nonce)) (note that this gets the address of 1)
+//  1. sends funds to sha(account ++ (nonce + 1))
+//  2. tx_create(sha(account ++ nonce)) (note that this gets the address of 1)
 //
 // Carrying over the balance ensures that Ether doesn't disappear.
 func (self *StateDB) CreateAccount(addr common.Address) {
@@ -544,13 +568,26 @@ func (self *StateDB) Copy() *StateDB {
 		state.stateObjects[addr] = self.stateObjects[addr].deepCopy(state, state.MarkStateObjectDirty)
 		state.stateObjectsDirty[addr] = struct{}{}
 	}
+
+	// Deep copy the logs occurred in the scope of block
 	for hash, logs := range self.logs {
-		state.logs[hash] = make([]*types.Log, len(logs))
-		copy(state.logs[hash], logs)
+		cpy := make([]*types.Log, len(logs))
+		for i, l := range logs {
+			cpy[i] = new(types.Log)
+			*cpy[i] = *l
+		}
+		state.logs[hash] = cpy
 	}
+
 	for hash, preimage := range self.preimages {
 		state.preimages[hash] = preimage
 	}
+	// Do we need to copy the access list? In practice: No. At the start of a
+	// transaction, the access list is empty. In practice, we only ever copy state
+	// _between_ transactions/blocks, never in the middle of a transaction.
+	// However, it doesn't cost us much to copy an empty list, so we do it anyway
+	// to not blow up if we ever decide copy it in the middle of a transaction
+	state.accessList = self.accessList.Copy()
 	return state
 }
 
@@ -618,6 +655,7 @@ func (self *StateDB) Prepare(thash, bhash common.Hash, ti int) {
 	self.thash = thash
 	self.bhash = bhash
 	self.txIndex = ti
+	self.accessList = newAccessList()
 }
 
 // DeleteSuicides flags the suicided objects for deletion so that it
@@ -692,6 +730,67 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (root common.Hash, err error)
 	return root, err
 }
 
+// PrepareAccessList handles the preparatory steps for executing a state transition with
+// regards to both EIP-2929 and EIP-2930:
+//
+// - Add sender to access list (2929)
+// - Add destination to access list (2929)
+// - Add precompiles to access list (2929)
+// - Add the contents of the optional tx access list (2930)
+//
+// This method should only be called if Yolov3/Berlin/2929+2930 is applicable at the current number.
+func (s *StateDB) PrepareAccessList(sender common.Address, dst *common.Address, precompiles []common.Address, list types.AccessList) {
+	s.AddAddressToAccessList(sender)
+	if dst != nil {
+		s.AddAddressToAccessList(*dst)
+		// If it's a create-tx, the destination will be added inside evm.create
+	}
+	for _, addr := range precompiles {
+		s.AddAddressToAccessList(addr)
+	}
+	for _, el := range list {
+		s.AddAddressToAccessList(el.Address)
+		for _, key := range el.StorageKeys {
+			s.AddSlotToAccessList(el.Address, key)
+		}
+	}
+}
+
+// AddAddressToAccessList adds the given address to the access list
+func (s *StateDB) AddAddressToAccessList(addr common.Address) {
+	if s.accessList.AddAddress(addr) {
+		s.journal = append(s.journal, accessListAddAccountChange{&addr})
+	}
+}
+
+// AddSlotToAccessList adds the given (address, slot)-tuple to the access list
+func (s *StateDB) AddSlotToAccessList(addr common.Address, slot common.Hash) {
+	addrMod, slotMod := s.accessList.AddSlot(addr, slot)
+	if addrMod {
+		// In practice, this should not happen, since there is no way to enter the
+		// scope of 'address' without having the 'address' become already added
+		// to the access list (via call-variant, create, etc).
+		// Better safe than sorry, though
+		s.journal = append(s.journal, accessListAddAccountChange{&addr})
+	}
+	if slotMod {
+		s.journal = append(s.journal, accessListAddSlotChange{
+			address: &addr,
+			slot:    &slot,
+		})
+	}
+}
+
+// AddressInAccessList returns true if the given address is in the access list.
+func (s *StateDB) AddressInAccessList(addr common.Address) bool {
+	return s.accessList.ContainsAddress(addr)
+}
+
+// SlotInAccessList returns true if the given (address, slot)-tuple is in the access list.
+func (s *StateDB) SlotInAccessList(addr common.Address, slot common.Hash) (addressPresent bool, slotPresent bool) {
+	return s.accessList.Contains(addr, slot)
+}
+
 func (s *StateDB) GetOwner(candidate common.Address) common.Address {
 	slot := slotValidatorMapping["validatorsState"]
 	// validatorsState[_candidate].owner;

core/state/statedb_test.go

@@ -20,7 +20,6 @@ import (
 	"bytes"
 	"encoding/binary"
 	"fmt"
-	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"math"
 	"math/big"
 	"math/rand"
@@ -32,6 +31,7 @@ import (
 	check "gopkg.in/check.v1"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
 )
 
@@ -283,6 +283,20 @@ func newTestAction(addr common.Address, r *rand.Rand) testAction {
 			},
 			args: make([]int64, 1),
 		},
+		{
+			name: "AddAddressToAccessList",
+			fn: func(a testAction, s *StateDB) {
+				s.AddAddressToAccessList(addr)
+			},
+		},
+		{
+			name: "AddSlotToAccessList",
+			fn: func(a testAction, s *StateDB) {
+				s.AddSlotToAccessList(addr,
+					common.Hash{byte(a.args[0])})
+			},
+			args: make([]int64, 1),
+		},
 	}
 	action := actions[r.Intn(len(actions))]
 	var nameargs []string
@@ -427,3 +441,177 @@ func (s *StateSuite) TestTouchDelete(c *check.C) {
 		c.Fatal("expected no dirty state object")
 	}
 }
+
+func TestStateDBAccessList(t *testing.T) {
+	// Some helpers
+	addr := func(a string) common.Address {
+		return common.HexToAddress(a)
+	}
+	slot := func(a string) common.Hash {
+		return common.HexToHash(a)
+	}
+
+	memDb := rawdb.NewMemoryDatabase()
+	db := NewDatabase(memDb)
+	state, _ := New(common.Hash{}, db)
+	state.accessList = newAccessList()
+
+	verifyAddrs := func(astrings ...string) {
+		t.Helper()
+		// convert to common.Address form
+		var addresses []common.Address
+		var addressMap = make(map[common.Address]struct{})
+		for _, astring := range astrings {
+			address := addr(astring)
+			addresses = append(addresses, address)
+			addressMap[address] = struct{}{}
+		}
+		// Check that the given addresses are in the access list
+		for _, address := range addresses {
+			if !state.AddressInAccessList(address) {
+				t.Fatalf("expected %x to be in access list", address)
+			}
+		}
+		// Check that only the expected addresses are present in the acesslist
+		for address := range state.accessList.addresses {
+			if _, exist := addressMap[address]; !exist {
+				t.Fatalf("extra address %x in access list", address)
+			}
+		}
+	}
+	verifySlots := func(addrString string, slotStrings ...string) {
+		if !state.AddressInAccessList(addr(addrString)) {
+			t.Fatalf("scope missing address/slots %v", addrString)
+		}
+		var address = addr(addrString)
+		// convert to common.Hash form
+		var slots []common.Hash
+		var slotMap = make(map[common.Hash]struct{})
+		for _, slotString := range slotStrings {
+			s := slot(slotString)
+			slots = append(slots, s)
+			slotMap[s] = struct{}{}
+		}
+		// Check that the expected items are in the access list
+		for i, s := range slots {
+			if _, slotPresent := state.SlotInAccessList(address, s); !slotPresent {
+				t.Fatalf("input %d: scope missing slot %v (address %v)", i, s, addrString)
+			}
+		}
+		// Check that no extra elements are in the access list
+		index := state.accessList.addresses[address]
+		if index >= 0 {
+			stateSlots := state.accessList.slots[index]
+			for s := range stateSlots {
+				if _, slotPresent := slotMap[s]; !slotPresent {
+					t.Fatalf("scope has extra slot %v (address %v)", s, addrString)
+				}
+			}
+		}
+	}
+
+	state.AddAddressToAccessList(addr("aa"))          // 1
+	state.AddSlotToAccessList(addr("bb"), slot("01")) // 2,3
+	state.AddSlotToAccessList(addr("bb"), slot("02")) // 4
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02")
+
+	// Make a copy
+	stateCopy1 := state.Copy()
+	if exp, got := 4, state.journal.length(); exp != got {
+		t.Fatalf("journal length mismatch: have %d, want %d", got, exp)
+	}
+
+	// same again, should cause no journal entries
+	state.AddSlotToAccessList(addr("bb"), slot("01"))
+	state.AddSlotToAccessList(addr("bb"), slot("02"))
+	state.AddAddressToAccessList(addr("aa"))
+	if exp, got := 4, state.journal.length(); exp != got {
+		t.Fatalf("journal length mismatch: have %d, want %d", got, exp)
+	}
+	// some new ones
+	state.AddSlotToAccessList(addr("bb"), slot("03")) // 5
+	state.AddSlotToAccessList(addr("aa"), slot("01")) // 6
+	state.AddSlotToAccessList(addr("cc"), slot("01")) // 7,8
+	state.AddAddressToAccessList(addr("cc"))
+	if exp, got := 8, state.journal.length(); exp != got {
+		t.Fatalf("journal length mismatch: have %d, want %d", got, exp)
+	}
+
+	verifyAddrs("aa", "bb", "cc")
+	verifySlots("aa", "01")
+	verifySlots("bb", "01", "02", "03")
+	verifySlots("cc", "01")
+
+	// now start rolling back changes
+	state.journal[7].undo(state)
+	if _, ok := state.SlotInAccessList(addr("cc"), slot("01")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb", "cc")
+	verifySlots("aa", "01")
+	verifySlots("bb", "01", "02", "03")
+
+	state.journal[6].undo(state)
+	if state.AddressInAccessList(addr("cc")) {
+		t.Fatalf("addr present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("aa", "01")
+	verifySlots("bb", "01", "02", "03")
+
+	state.journal[5].undo(state)
+	if _, ok := state.SlotInAccessList(addr("aa"), slot("01")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02", "03")
+
+	state.journal[4].undo(state)
+	if _, ok := state.SlotInAccessList(addr("bb"), slot("03")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02")
+
+	state.journal[3].undo(state)
+	if _, ok := state.SlotInAccessList(addr("bb"), slot("02")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01")
+
+	state.journal[2].undo(state)
+	if _, ok := state.SlotInAccessList(addr("bb"), slot("01")); ok {
+		t.Fatalf("slot present, expected missing")
+	}
+	verifyAddrs("aa", "bb")
+
+	state.journal[1].undo(state)
+	if state.AddressInAccessList(addr("bb")) {
+		t.Fatalf("addr present, expected missing")
+	}
+	verifyAddrs("aa")
+
+	state.journal[0].undo(state)
+	if state.AddressInAccessList(addr("aa")) {
+		t.Fatalf("addr present, expected missing")
+	}
+	if got, exp := len(state.accessList.addresses), 0; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+	if got, exp := len(state.accessList.slots), 0; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+	// Check the copy
+	// Make a copy
+	state = stateCopy1
+	verifyAddrs("aa", "bb")
+	verifySlots("bb", "01", "02")
+	if got, exp := len(state.accessList.addresses), 2; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+	if got, exp := len(state.accessList.slots), 1; got != exp {
+		t.Fatalf("expected empty, got %d", got)
+	}
+}

core/state_processor.go

@@ -218,17 +218,17 @@ func ApplyTransaction(config *params.ChainConfig, tokensFee map[common.Address]*
 	if tx.To() != nil && tx.To().String() == common.BlockSigners && config.IsTIPSigning(header.Number) {
 		return ApplySignTransaction(config, statedb, header, tx, usedGas)
 	}
-	if tx.To() != nil && tx.To().String() == common.TradingStateAddr && config.IsTIPXDCX(header.Number) {
+	if tx.To() != nil && tx.To().String() == common.TradingStateAddr && config.IsTIPXDCXReceiver(header.Number) {
 		return ApplyEmptyTransaction(config, statedb, header, tx, usedGas)
 	}
-	if tx.To() != nil && tx.To().String() == common.XDCXLendingAddress && config.IsTIPXDCX(header.Number) {
+	if tx.To() != nil && tx.To().String() == common.XDCXLendingAddress && config.IsTIPXDCXReceiver(header.Number) {
 		return ApplyEmptyTransaction(config, statedb, header, tx, usedGas)
 	}
-	if tx.IsTradingTransaction() && config.IsTIPXDCX(header.Number) {
+	if tx.IsTradingTransaction() && config.IsTIPXDCXReceiver(header.Number) {
 		return ApplyEmptyTransaction(config, statedb, header, tx, usedGas)
 	}
 
-	if tx.IsLendingFinalizedTradeTransaction() && config.IsTIPXDCX(header.Number) {
+	if tx.IsLendingFinalizedTradeTransaction() && config.IsTIPXDCXReceiver(header.Number) {
 		return ApplyEmptyTransaction(config, statedb, header, tx, usedGas)
 	}
 
@@ -242,7 +242,7 @@ func ApplyTransaction(config *params.ChainConfig, tokensFee map[common.Address]*
 	if err != nil {
 		return nil, 0, err, false
 	}
-	// Create a new context to be used in the EVM environment
+	// Create a new context to be used in the EVM environment.
 	context := NewEVMContext(msg, header, bc, author)
 	// Create a new environment which holds all relevant information
 	// about the transaction and calling mechanisms.
@@ -408,7 +408,8 @@ func ApplyTransaction(config *params.ChainConfig, tokensFee map[common.Address]*
 	if err != nil {
 		return nil, 0, err, false
 	}
-	// Update the state with pending changes
+
+	// Update the state with pending changes.
 	var root []byte
 	if config.IsByzantium(header.Number) {
 		statedb.Finalise(true)
@@ -417,18 +418,28 @@ func ApplyTransaction(config *params.ChainConfig, tokensFee map[common.Address]*
 	}
 	*usedGas += gas
 
-	// Create a new receipt for the transaction, storing the intermediate root and gas used by the tx
-	// based on the eip phase, we're passing wether the root touch-delete accounts.
-	receipt := types.NewReceipt(root, failed, *usedGas)
+	// Create a new receipt for the transaction, storing the intermediate root and gas used
+	// by the tx.
+	receipt := &types.Receipt{Type: tx.Type(), PostState: root, CumulativeGasUsed: *usedGas}
+	if failed {
+		receipt.Status = types.ReceiptStatusFailed
+	} else {
+		receipt.Status = types.ReceiptStatusSuccessful
+	}
 	receipt.TxHash = tx.Hash()
 	receipt.GasUsed = gas
-	// if the transaction created a contract, store the creation address in the receipt.
+
+	// If the transaction created a contract, store the creation address in the receipt.
 	if msg.To() == nil {
 		receipt.ContractAddress = crypto.CreateAddress(vmenv.Context.Origin, tx.Nonce())
 	}
-	// Set the receipt logs and create a bloom for filtering
+
+	// Set the receipt logs and create the bloom filter.
 	receipt.Logs = statedb.GetLogs(tx.Hash())
 	receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
+	receipt.BlockHash = statedb.BlockHash()
+	receipt.BlockNumber = header.Number
+	receipt.TransactionIndex = uint(statedb.TxIndex())
 	if balanceFee != nil && failed {
 		state.PayFeeWithTRC21TxFail(statedb, msg.From(), *tx.To())
 	}
@@ -467,6 +478,9 @@ func ApplySignTransaction(config *params.ChainConfig, statedb *state.StateDB, he
 	statedb.AddLog(log)
 	receipt.Logs = statedb.GetLogs(tx.Hash())
 	receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
+	receipt.BlockHash = statedb.BlockHash()
+	receipt.BlockNumber = header.Number
+	receipt.TransactionIndex = uint(statedb.TxIndex())
 	return receipt, 0, nil, false
 }
 
@@ -491,6 +505,9 @@ func ApplyEmptyTransaction(config *params.ChainConfig, statedb *state.StateDB, h
 	statedb.AddLog(log)
 	receipt.Logs = statedb.GetLogs(tx.Hash())
 	receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
+	receipt.BlockHash = statedb.BlockHash()
+	receipt.BlockNumber = header.Number
+	receipt.TransactionIndex = uint(statedb.TxIndex())
 	return receipt, 0, nil, false
 }
 
@@ -512,7 +529,6 @@ func InitSignerInTransactions(config *params.ChainConfig, header *types.Header,
 		go func(from int, to int) {
 			for j := from; j < to; j++ {
 				types.CacheSigner(signer, txs[j])
-				txs[j].CacheHash()
 			}
 			wg.Done()
 		}(from, to)

core/state_transition.go

@@ -22,6 +22,7 @@ import (
 	"math/big"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/core/vm"
 	"github.com/XinFinOrg/XDPoSChain/log"
 	"github.com/XinFinOrg/XDPoSChain/params"
@@ -42,8 +43,10 @@ The state transitioning model does all all the necessary work to work out a vali
 3) Create a new state object if the recipient is \0*32
 4) Value transfer
 == If contract creation ==
-  4a) Attempt to run transaction data
-  4b) If valid, use result as code for the new state object
+
+	4a) Attempt to run transaction data
+	4b) If valid, use result as code for the new state object
+
 == end ==
 5) Run Script section
 6) Derive new state root
@@ -74,13 +77,14 @@ type Message interface {
 	CheckNonce() bool
 	Data() []byte
 	BalanceTokenFee() *big.Int
+	AccessList() types.AccessList
 }
 
 // IntrinsicGas computes the 'intrinsic gas' for a message with the given data.
-func IntrinsicGas(data []byte, contractCreation, homestead bool) (uint64, error) {
+func IntrinsicGas(data []byte, accessList types.AccessList, isContractCreation, isHomestead bool) (uint64, error) {
 	// Set the starting gas for the raw transaction
 	var gas uint64
-	if contractCreation && homestead {
+	if isContractCreation && isHomestead {
 		gas = params.TxGasContractCreation
 	} else {
 		gas = params.TxGas
@@ -106,6 +110,10 @@ func IntrinsicGas(data []byte, contractCreation, homestead bool) (uint64, error)
 		}
 		gas += z * params.TxDataZeroGas
 	}
+	if accessList != nil {
+		gas += uint64(len(accessList)) * params.TxAccessListAddressGas
+		gas += uint64(accessList.StorageKeys()) * params.TxAccessListStorageKeyGas
+	}
 	return gas, nil
 }
 
@@ -226,7 +234,7 @@ func (st *StateTransition) TransitionDb(owner common.Address) (ret []byte, usedG
 	contractCreation := msg.To() == nil
 
 	// Pay intrinsic gas
-	gas, err := IntrinsicGas(st.data, contractCreation, homestead)
+	gas, err := IntrinsicGas(st.data, st.msg.AccessList(), contractCreation, homestead)
 	if err != nil {
 		return nil, 0, false, err, nil
 	}
@@ -234,6 +242,10 @@ func (st *StateTransition) TransitionDb(owner common.Address) (ret []byte, usedG
 		return nil, 0, false, err, nil
 	}
 
+	if rules := st.evm.ChainConfig().Rules(st.evm.Context.BlockNumber); rules.IsEIP1559 {
+		st.state.PrepareAccessList(msg.From(), msg.To(), vm.ActivePrecompiles(rules), msg.AccessList())
+	}
+
 	var (
 		evm = st.evm
 		// vm errors do not effect consensus and are therefor

core/token_validator.go

@@ -27,6 +27,7 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/contracts/XDCx/contract"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
+	"github.com/XinFinOrg/XDPoSChain/core/types"
 	"github.com/XinFinOrg/XDPoSChain/core/vm"
 	"github.com/XinFinOrg/XDPoSChain/log"
 )
@@ -37,20 +38,21 @@ const (
 	getDecimalFunction = "decimals"
 )
 
-// callmsg implements core.Message to allow passing it as a transaction simulator.
-type callmsg struct {
+// callMsg implements core.Message to allow passing it as a transaction simulator.
+type callMsg struct {
 	ethereum.CallMsg
 }
 
-func (m callmsg) From() common.Address      { return m.CallMsg.From }
-func (m callmsg) Nonce() uint64             { return 0 }
-func (m callmsg) CheckNonce() bool          { return false }
-func (m callmsg) To() *common.Address       { return m.CallMsg.To }
-func (m callmsg) GasPrice() *big.Int        { return m.CallMsg.GasPrice }
-func (m callmsg) Gas() uint64               { return m.CallMsg.Gas }
-func (m callmsg) Value() *big.Int           { return m.CallMsg.Value }
-func (m callmsg) Data() []byte              { return m.CallMsg.Data }
-func (m callmsg) BalanceTokenFee() *big.Int { return m.CallMsg.BalanceTokenFee }
+func (m callMsg) From() common.Address         { return m.CallMsg.From }
+func (m callMsg) Nonce() uint64                { return 0 }
+func (m callMsg) CheckNonce() bool             { return false }
+func (m callMsg) To() *common.Address          { return m.CallMsg.To }
+func (m callMsg) GasPrice() *big.Int           { return m.CallMsg.GasPrice }
+func (m callMsg) Gas() uint64                  { return m.CallMsg.Gas }
+func (m callMsg) Value() *big.Int              { return m.CallMsg.Value }
+func (m callMsg) Data() []byte                 { return m.CallMsg.Data }
+func (m callMsg) BalanceTokenFee() *big.Int    { return m.CallMsg.BalanceTokenFee }
+func (m callMsg) AccessList() types.AccessList { return m.CallMsg.AccessList }
 
 type SimulatedBackend interface {
 	CallContractWithState(call ethereum.CallMsg, chain consensus.ChainContext, statedb *state.StateDB) ([]byte, error)
@@ -86,7 +88,7 @@ func RunContract(chain consensus.ChainContext, statedb *state.StateDB, contractA
 	return unpackResult, nil
 }
 
-//FIXME: please use copyState for this function
+// FIXME: please use copyState for this function
 // CallContractWithState executes a contract call at the given state.
 func CallContractWithState(call ethereum.CallMsg, chain consensus.ChainContext, statedb *state.StateDB) ([]byte, error) {
 	// Ensure message is initialized properly.
@@ -99,7 +101,7 @@ func CallContractWithState(call ethereum.CallMsg, chain consensus.ChainContext,
 		call.Value = new(big.Int)
 	}
 	// Execute the call.
-	msg := callmsg{call}
+	msg := callMsg{call}
 	feeCapacity := state.GetTRC21FeeCapacityFromState(statedb)
 	if msg.To() != nil {
 		if value, ok := feeCapacity[*msg.To()]; ok {
@@ -124,7 +126,7 @@ func ValidateXDCXApplyTransaction(chain consensus.ChainContext, blockNumber *big
 	if blockNumber == nil || blockNumber.Sign() <= 0 {
 		blockNumber = chain.CurrentHeader().Number
 	}
-	if !chain.Config().IsTIPXDCX(blockNumber) {
+	if !chain.Config().IsTIPXDCXReceiver(blockNumber) {
 		return nil
 	}
 	contractABI, err := GetTokenAbi(contract.TRC21ABI)
@@ -146,7 +148,7 @@ func ValidateXDCZApplyTransaction(chain consensus.ChainContext, blockNumber *big
 	if blockNumber == nil || blockNumber.Sign() <= 0 {
 		blockNumber = chain.CurrentHeader().Number
 	}
-	if !chain.Config().IsTIPXDCX(blockNumber) {
+	if !chain.Config().IsTIPXDCXReceiver(blockNumber) {
 		return nil
 	}
 	contractABI, err := GetTokenAbi(contract.TRC21ABI)

core/tx_cacher.go

@@ -0,0 +1,105 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package core
+
+import (
+	"runtime"
+
+	"github.com/XinFinOrg/XDPoSChain/core/types"
+)
+
+// senderCacher is a concurrent tranaction sender recoverer anc cacher.
+var senderCacher = newTxSenderCacher(runtime.NumCPU())
+
+// txSenderCacherRequest is a request for recovering transaction senders with a
+// specific signature scheme and caching it into the transactions themselves.
+//
+// The inc field defines the number of transactions to skip after each recovery,
+// which is used to feed the same underlying input array to different threads but
+// ensure they process the early transactions fast.
+type txSenderCacherRequest struct {
+	signer types.Signer
+	txs    []*types.Transaction
+	inc    int
+}
+
+// txSenderCacher is a helper structure to concurrently ecrecover transaction
+// senders from digital signatures on background threads.
+type txSenderCacher struct {
+	threads int
+	tasks   chan *txSenderCacherRequest
+}
+
+// newTxSenderCacher creates a new transaction sender background cacher and starts
+// as many procesing goroutines as allowed by the GOMAXPROCS on construction.
+func newTxSenderCacher(threads int) *txSenderCacher {
+	cacher := &txSenderCacher{
+		tasks:   make(chan *txSenderCacherRequest, threads),
+		threads: threads,
+	}
+	for i := 0; i < threads; i++ {
+		go cacher.cache()
+	}
+	return cacher
+}
+
+// cache is an infinite loop, caching transaction senders from various forms of
+// data structures.
+func (cacher *txSenderCacher) cache() {
+	for task := range cacher.tasks {
+		for i := 0; i < len(task.txs); i += task.inc {
+			types.Sender(task.signer, task.txs[i])
+		}
+	}
+}
+
+// recover recovers the senders from a batch of transactions and caches them
+// back into the same data structures. There is no validation being done, nor
+// any reaction to invalid signatures. That is up to calling code later.
+func (cacher *txSenderCacher) recover(signer types.Signer, txs []*types.Transaction) {
+	// If there's nothing to recover, abort
+	if len(txs) == 0 {
+		return
+	}
+	// Ensure we have meaningful task sizes and schedule the recoveries
+	tasks := cacher.threads
+	if len(txs) < tasks*4 {
+		tasks = (len(txs) + 3) / 4
+	}
+	for i := 0; i < tasks; i++ {
+		cacher.tasks <- &txSenderCacherRequest{
+			signer: signer,
+			txs:    txs[i:],
+			inc:    tasks,
+		}
+	}
+}
+
+// recoverFromBlocks recovers the senders from a batch of blocks and caches them
+// back into the same data structures. There is no validation being done, nor
+// any reaction to invalid signatures. That is up to calling code later.
+func (cacher *txSenderCacher) recoverFromBlocks(signer types.Signer, blocks []*types.Block) {
+	count := 0
+	for _, block := range blocks {
+		count += len(block.Transactions())
+	}
+	txs := make([]*types.Transaction, 0, count)
+	for _, block := range blocks {
+		txs = append(txs, block.Transactions()...)
+	}
+	cacher.recover(signer, txs)
+}

core/tx_journal.go

@@ -56,7 +56,7 @@ func newTxJournal(path string) *txJournal {
 
 // load parses a transaction journal dump from disk, loading its contents into
 // the specified pool.
-func (journal *txJournal) load(add func(*types.Transaction) error) error {
+func (journal *txJournal) load(add func([]*types.Transaction) []error) error {
 	// Skip the parsing if the journal file doens't exist at all
 	if _, err := os.Stat(journal.path); os.IsNotExist(err) {
 		return nil
@@ -76,7 +76,21 @@ func (journal *txJournal) load(add func(*types.Transaction) error) error {
 	stream := rlp.NewStream(input, 0)
 	total, dropped := 0, 0
 
-	var failure error
+	// Create a method to load a limited batch of transactions and bump the
+	// appropriate progress counters. Then use this method to load all the
+	// journalled transactions in small-ish batches.
+	loadBatch := func(txs types.Transactions) {
+		for _, err := range add(txs) {
+			if err != nil {
+				log.Debug("Failed to add journaled transaction", "err", err)
+				dropped++
+			}
+		}
+	}
+	var (
+		failure error
+		batch   types.Transactions
+	)
 	for {
 		// Parse the next transaction and terminate on error
 		tx := new(types.Transaction)
@@ -84,14 +98,16 @@ func (journal *txJournal) load(add func(*types.Transaction) error) error {
 			if err != io.EOF {
 				failure = err
 			}
+			if batch.Len() > 0 {
+				loadBatch(batch)
+			}
 			break
 		}
-		// Import the transaction and bump the appropriate progress counters
+		// New transaction parsed, queue up for later, import if threnshold is reached
 		total++
-		if err = add(tx); err != nil {
-			log.Debug("Failed to add journaled transaction", "err", err)
-			dropped++
-			continue
+		if batch = append(batch, tx); batch.Len() > 1024 {
+			loadBatch(batch)
+			batch = batch[:0]
 		}
 	}
 	log.Info("Loaded local transaction journal", "transactions", total, "dropped", dropped)

core/tx_list.go

@@ -24,7 +24,6 @@ import (
 
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
-	"github.com/XinFinOrg/XDPoSChain/log"
 )
 
 // nonceHeap is a heap.Interface implementation over 64bit unsigned integers for
@@ -99,7 +98,30 @@ func (m *txSortedMap) Forward(threshold uint64) types.Transactions {
 
 // Filter iterates over the list of transactions and removes all of them for which
 // the specified function evaluates to true.
+// Filter, as opposed to 'filter', re-initialises the heap after the operation is done.
+// If you want to do several consecutive filterings, it's therefore better to first
+// do a .filter(func1) followed by .Filter(func2) or reheap()
 func (m *txSortedMap) Filter(filter func(*types.Transaction) bool) types.Transactions {
+	removed := m.filter(filter)
+	// If transactions were removed, the heap and cache are ruined
+	if len(removed) > 0 {
+		m.reheap()
+	}
+	return removed
+}
+
+func (m *txSortedMap) reheap() {
+	*m.index = make([]uint64, 0, len(m.items))
+	for nonce := range m.items {
+		*m.index = append(*m.index, nonce)
+	}
+	heap.Init(m.index)
+	m.cache = nil
+}
+
+// filter is identical to Filter, but **does not** regenerate the heap. This method
+// should only be used if followed immediately by a call to Filter or reheap()
+func (m *txSortedMap) filter(filter func(*types.Transaction) bool) types.Transactions {
 	var removed types.Transactions
 
 	// Collect all the transactions to filter out
@@ -109,14 +131,7 @@ func (m *txSortedMap) Filter(filter func(*types.Transaction) bool) types.Transac
 			delete(m.items, nonce)
 		}
 	}
-	// If transactions were removed, the heap and cache are ruined
 	if len(removed) > 0 {
-		*m.index = make([]uint64, 0, len(m.items))
-		for nonce := range m.items {
-			*m.index = append(*m.index, nonce)
-		}
-		heap.Init(m.index)
-
 		m.cache = nil
 	}
 	return removed
@@ -197,10 +212,7 @@ func (m *txSortedMap) Len() int {
 	return len(m.items)
 }
 
-// Flatten creates a nonce-sorted slice of transactions based on the loosely
-// sorted internal representation. The result of the sorting is cached in case
-// it's requested again before any modifications are made to the contents.
-func (m *txSortedMap) Flatten() types.Transactions {
+func (m *txSortedMap) flatten() types.Transactions {
 	// If the sorting was not cached yet, create and cache it
 	if m.cache == nil {
 		m.cache = make(types.Transactions, 0, len(m.items))
@@ -209,12 +221,27 @@ func (m *txSortedMap) Flatten() types.Transactions {
 		}
 		sort.Sort(types.TxByNonce(m.cache))
 	}
+	return m.cache
+}
+
+// Flatten creates a nonce-sorted slice of transactions based on the loosely
+// sorted internal representation. The result of the sorting is cached in case
+// it's requested again before any modifications are made to the contents.
+func (m *txSortedMap) Flatten() types.Transactions {
 	// Copy the cache to prevent accidental modifications
-	txs := make(types.Transactions, len(m.cache))
-	copy(txs, m.cache)
+	cache := m.flatten()
+	txs := make(types.Transactions, len(cache))
+	copy(txs, cache)
 	return txs
 }
 
+// LastElement returns the last element of a flattened list, thus, the
+// transaction with the highest nonce
+func (m *txSortedMap) LastElement() *types.Transaction {
+	cache := m.flatten()
+	return cache[len(cache)-1]
+}
+
 // txList is a "list" of transactions belonging to an account, sorted by account
 // nonce. The same type can be used both for storing contiguous transactions for
 // the executable/pending queue; and for storing gapped transactions for the non-
@@ -255,11 +282,15 @@ func (l *txList) Add(tx *types.Transaction, priceBump uint64) (bool, *types.Tran
 		return false, nil
 	}
 	if old != nil {
-		threshold := new(big.Int).Div(new(big.Int).Mul(old.GasPrice(), big.NewInt(100+int64(priceBump))), big.NewInt(100))
+		// threshold = oldGP * (100 + priceBump) / 100
+		a := big.NewInt(100 + int64(priceBump))
+		a = a.Mul(a, old.GasPrice())
+		b := big.NewInt(100)
+		threshold := a.Div(a, b)
 		// Have to ensure that the new gas price is higher than the old gas
 		// price as well as checking the percentage threshold to ensure that
 		// this is accurate for low (Wei-level) gas price replacements
-		if old.GasPrice().Cmp(tx.GasPrice()) >= 0 || threshold.Cmp(tx.GasPrice()) > 0 {
+		if old.GasPriceCmp(tx) >= 0 || tx.GasPriceIntCmp(threshold) < 0 {
 			return false, nil
 		}
 	}
@@ -303,24 +334,27 @@ func (l *txList) Filter(costLimit *big.Int, gasLimit uint64, trc21Issuers map[co
 		maximum := costLimit
 		if tx.To() != nil {
 			if feeCapacity, ok := trc21Issuers[*tx.To()]; ok {
-				return new(big.Int).Add(costLimit, feeCapacity).Cmp(tx.TxCost(number)) < 0 || tx.Gas() > gasLimit
+				return tx.Gas() > gasLimit || new(big.Int).Add(costLimit, feeCapacity).Cmp(tx.TxCost(number)) < 0
 			}
 		}
-		return tx.Cost().Cmp(maximum) > 0 || tx.Gas() > gasLimit
+		return tx.Gas() > gasLimit || tx.Cost().Cmp(maximum) > 0
 	})
 
-	// If the list was strict, filter anything above the lowest nonce
+	if len(removed) == 0 {
+		return nil, nil
+	}
 	var invalids types.Transactions
-
-	if l.strict && len(removed) > 0 {
+	// If the list was strict, filter anything above the lowest nonce
+	if l.strict {
 		lowest := uint64(math.MaxUint64)
 		for _, tx := range removed {
 			if nonce := tx.Nonce(); lowest > nonce {
 				lowest = nonce
 			}
 		}
-		invalids = l.txs.Filter(func(tx *types.Transaction) bool { return tx.Nonce() > lowest })
+		invalids = l.txs.filter(func(tx *types.Transaction) bool { return tx.Nonce() > lowest })
 	}
+	l.txs.reheap()
 	return removed, invalids
 }
 
@@ -374,13 +408,30 @@ func (l *txList) Flatten() types.Transactions {
 	return l.txs.Flatten()
 }
 
+// LastElement returns the last element of a flattened list, thus, the
+// transaction with the highest nonce
+func (l *txList) LastElement() *types.Transaction {
+	return l.txs.LastElement()
+}
+
 // priceHeap is a heap.Interface implementation over transactions for retrieving
 // price-sorted transactions to discard when the pool fills up.
 type priceHeap []*types.Transaction
 
-func (h priceHeap) Len() int           { return len(h) }
-func (h priceHeap) Less(i, j int) bool { return h[i].GasPrice().Cmp(h[j].GasPrice()) < 0 }
-func (h priceHeap) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
+func (h priceHeap) Len() int      { return len(h) }
+func (h priceHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] }
+
+func (h priceHeap) Less(i, j int) bool {
+	// Sort primarily by price, returning the cheaper one
+	switch h[i].GasPriceCmp(h[j]) {
+	case -1:
+		return true
+	case 1:
+		return false
+	}
+	// If the prices match, stabilize via nonces (high nonce is worse)
+	return h[i].Nonce() > h[j].Nonce()
+}
 
 func (h *priceHeap) Push(x interface{}) {
 	*h = append(*h, x.(*types.Transaction))
@@ -395,125 +446,126 @@ func (h *priceHeap) Pop() interface{} {
 }
 
 // txPricedList is a price-sorted heap to allow operating on transactions pool
-// contents in a price-incrementing way.
+// contents in a price-incrementing way. It's built opon the all transactions
+// in txpool but only interested in the remote part. It means only remote transactions
+// will be considered for tracking, sorting, eviction, etc.
 type txPricedList struct {
-	all    *map[common.Hash]*types.Transaction // Pointer to the map of all transactions
-	items  *priceHeap                          // Heap of prices of all the stored transactions
-	stales int                                 // Number of stale price points to (re-heap trigger)
+	all     *txLookup  // Pointer to the map of all transactions
+	remotes *priceHeap // Heap of prices of all the stored **remote** transactions
+	stales  int        // Number of stale price points to (re-heap trigger)
 }
 
 // newTxPricedList creates a new price-sorted transaction heap.
-func newTxPricedList(all *map[common.Hash]*types.Transaction) *txPricedList {
+func newTxPricedList(all *txLookup) *txPricedList {
 	return &txPricedList{
-		all:   all,
-		items: new(priceHeap),
+		all:     all,
+		remotes: new(priceHeap),
 	}
 }
 
 // Put inserts a new transaction into the heap.
-func (l *txPricedList) Put(tx *types.Transaction) {
-	heap.Push(l.items, tx)
+func (l *txPricedList) Put(tx *types.Transaction, local bool) {
+	if local {
+		return
+	}
+	heap.Push(l.remotes, tx)
 }
 
 // Removed notifies the prices transaction list that an old transaction dropped
 // from the pool. The list will just keep a counter of stale objects and update
 // the heap if a large enough ratio of transactions go stale.
-func (l *txPricedList) Removed() {
+func (l *txPricedList) Removed(count int) {
 	// Bump the stale counter, but exit if still too low (< 25%)
-	l.stales++
-	if l.stales <= len(*l.items)/4 {
+	l.stales += count
+	if l.stales <= len(*l.remotes)/4 {
 		return
 	}
 	// Seems we've reached a critical number of stale transactions, reheap
-	reheap := make(priceHeap, 0, len(*l.all))
-
-	l.stales, l.items = 0, &reheap
-	for _, tx := range *l.all {
-		*l.items = append(*l.items, tx)
-	}
-	heap.Init(l.items)
+	l.Reheap()
 }
 
 // Cap finds all the transactions below the given price threshold, drops them
-// from the priced list and returs them for further removal from the entire pool.
-func (l *txPricedList) Cap(threshold *big.Int, local *accountSet) types.Transactions {
+// from the priced list and returns them for further removal from the entire pool.
+//
+// Note: only remote transactions will be considered for eviction.
+func (l *txPricedList) Cap(threshold *big.Int) types.Transactions {
 	drop := make(types.Transactions, 0, 128) // Remote underpriced transactions to drop
-	save := make(types.Transactions, 0, 64)  // Local underpriced transactions to keep
-
-	for len(*l.items) > 0 {
+	for len(*l.remotes) > 0 {
 		// Discard stale transactions if found during cleanup
-		tx := heap.Pop(l.items).(*types.Transaction)
-		if _, ok := (*l.all)[tx.Hash()]; !ok {
+		cheapest := (*l.remotes)[0]
+		if l.all.GetRemote(cheapest.Hash()) == nil { // Removed or migrated
+			heap.Pop(l.remotes)
 			l.stales--
 			continue
 		}
 		// Stop the discards if we've reached the threshold
-		if tx.GasPrice().Cmp(threshold) >= 0 {
-			save = append(save, tx)
+		if cheapest.GasPriceIntCmp(threshold) >= 0 {
 			break
 		}
-		// Non stale transaction found, discard unless local
-		if local.containsTx(tx) {
-			save = append(save, tx)
-		} else {
-			drop = append(drop, tx)
-		}
-	}
-	for _, tx := range save {
-		heap.Push(l.items, tx)
+		heap.Pop(l.remotes)
+		drop = append(drop, cheapest)
 	}
 	return drop
 }
 
 // Underpriced checks whether a transaction is cheaper than (or as cheap as) the
-// lowest priced transaction currently being tracked.
-func (l *txPricedList) Underpriced(tx *types.Transaction, local *accountSet) bool {
-	// Local transactions cannot be underpriced
-	if local.containsTx(tx) {
-		return false
-	}
+// lowest priced (remote) transaction currently being tracked.
+func (l *txPricedList) Underpriced(tx *types.Transaction) bool {
 	// Discard stale price points if found at the heap start
-	for len(*l.items) > 0 {
-		head := []*types.Transaction(*l.items)[0]
-		if _, ok := (*l.all)[head.Hash()]; !ok {
+	for len(*l.remotes) > 0 {
+		head := []*types.Transaction(*l.remotes)[0]
+		if l.all.GetRemote(head.Hash()) == nil { // Removed or migrated
 			l.stales--
-			heap.Pop(l.items)
+			heap.Pop(l.remotes)
 			continue
 		}
 		break
 	}
 	// Check if the transaction is underpriced or not
-	if len(*l.items) == 0 {
-		log.Error("Pricing query for empty pool") // This cannot happen, print to catch programming errors
-		return false
+	if len(*l.remotes) == 0 {
+		return false // There is no remote transaction at all.
 	}
-	cheapest := []*types.Transaction(*l.items)[0]
-	return cheapest.GasPrice().Cmp(tx.GasPrice()) >= 0
+	// If the remote transaction is even cheaper than the
+	// cheapest one tracked locally, reject it.
+	cheapest := []*types.Transaction(*l.remotes)[0]
+	return cheapest.GasPriceCmp(tx) >= 0
 }
 
 // Discard finds a number of most underpriced transactions, removes them from the
 // priced list and returns them for further removal from the entire pool.
-func (l *txPricedList) Discard(count int, local *accountSet) types.Transactions {
-	drop := make(types.Transactions, 0, count) // Remote underpriced transactions to drop
-	save := make(types.Transactions, 0, 64)    // Local underpriced transactions to keep
-
-	for len(*l.items) > 0 && count > 0 {
+//
+// Note local transaction won't be considered for eviction.
+func (l *txPricedList) Discard(slots int, force bool) (types.Transactions, bool) {
+	drop := make(types.Transactions, 0, slots) // Remote underpriced transactions to drop
+	for len(*l.remotes) > 0 && slots > 0 {
 		// Discard stale transactions if found during cleanup
-		tx := heap.Pop(l.items).(*types.Transaction)
-		if _, ok := (*l.all)[tx.Hash()]; !ok {
+		tx := heap.Pop(l.remotes).(*types.Transaction)
+		if l.all.GetRemote(tx.Hash()) == nil { // Removed or migrated
 			l.stales--
 			continue
 		}
-		// Non stale transaction found, discard unless local
-		if local.containsTx(tx) {
-			save = append(save, tx)
-		} else {
-			drop = append(drop, tx)
-			count--
+		// Non stale transaction found, discard it
+		drop = append(drop, tx)
+		slots -= numSlots(tx)
+	}
+	// If we still can't make enough room for the new transaction
+	if slots > 0 && !force {
+		for _, tx := range drop {
+			heap.Push(l.remotes, tx)
 		}
+		return nil, false
 	}
-	for _, tx := range save {
-		heap.Push(l.items, tx)
-	}
-	return drop
+	return drop, true
+}
+
+// Reheap forcibly rebuilds the heap based on the current remote transaction set.
+func (l *txPricedList) Reheap() {
+	reheap := make(priceHeap, 0, l.all.RemoteCount())
+
+	l.stales, l.remotes = 0, &reheap
+	l.all.Range(func(hash common.Hash, tx *types.Transaction, local bool) bool {
+		*l.remotes = append(*l.remotes, tx)
+		return true
+	}, false, true) // Only iterate remotes
+	heap.Init(l.remotes)
 }

core/tx_list_test.go

@@ -17,6 +17,7 @@
 package core
 
 import (
+	"math/big"
 	"math/rand"
 	"testing"
 
@@ -49,3 +50,21 @@ func TestStrictTxListAdd(t *testing.T) {
 		}
 	}
 }
+
+func BenchmarkTxListAdd(t *testing.B) {
+	// Generate a list of transactions to insert
+	key, _ := crypto.GenerateKey()
+
+	txs := make(types.Transactions, 100000)
+	for i := 0; i < len(txs); i++ {
+		txs[i] = transaction(uint64(i), 0, key)
+	}
+	// Insert the transactions in a random order
+	list := newTxList(true)
+	priceLimit := big.NewInt(int64(DefaultTxPoolConfig.PriceLimit))
+	t.ResetTimer()
+	for _, v := range rand.Perm(len(txs)) {
+		list.Add(txs[v], DefaultTxPoolConfig.PriceBump)
+		list.Filter(priceLimit, DefaultTxPoolConfig.PriceBump, nil, nil)
+	}
+}

core/tx_noncer.go

@@ -0,0 +1,79 @@
+// Copyright 2019 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package core
+
+import (
+	"sync"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/core/state"
+)
+
+// txNoncer is a tiny virtual state database to manage the executable nonces of
+// accounts in the pool, falling back to reading from a real state database if
+// an account is unknown.
+type txNoncer struct {
+	fallback *state.StateDB
+	nonces   map[common.Address]uint64
+	lock     sync.Mutex
+}
+
+// newTxNoncer creates a new virtual state database to track the pool nonces.
+func newTxNoncer(statedb *state.StateDB) *txNoncer {
+	return &txNoncer{
+		fallback: statedb.Copy(),
+		nonces:   make(map[common.Address]uint64),
+	}
+}
+
+// get returns the current nonce of an account, falling back to a real state
+// database if the account is unknown.
+func (txn *txNoncer) get(addr common.Address) uint64 {
+	// We use mutex for get operation is the underlying
+	// state will mutate db even for read access.
+	txn.lock.Lock()
+	defer txn.lock.Unlock()
+
+	if _, ok := txn.nonces[addr]; !ok {
+		txn.nonces[addr] = txn.fallback.GetNonce(addr)
+	}
+	return txn.nonces[addr]
+}
+
+// set inserts a new virtual nonce into the virtual state database to be returned
+// whenever the pool requests it instead of reaching into the real state database.
+func (txn *txNoncer) set(addr common.Address, nonce uint64) {
+	txn.lock.Lock()
+	defer txn.lock.Unlock()
+
+	txn.nonces[addr] = nonce
+}
+
+// setIfLower updates a new virtual nonce into the virtual state database if the
+// the new one is lower.
+func (txn *txNoncer) setIfLower(addr common.Address, nonce uint64) {
+	txn.lock.Lock()
+	defer txn.lock.Unlock()
+
+	if _, ok := txn.nonces[addr]; !ok {
+		txn.nonces[addr] = txn.fallback.GetNonce(addr)
+	}
+	if txn.nonces[addr] <= nonce {
+		return
+	}
+	txn.nonces[addr] = nonce
+}

core/types/access_list_tx.go

@@ -0,0 +1,115 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package types
+
+import (
+	"math/big"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+)
+
+//go:generate gencodec -type AccessTuple -out gen_access_tuple.go
+
+// AccessList is an EIP-2930 access list.
+type AccessList []AccessTuple
+
+// AccessTuple is the element type of an access list.
+type AccessTuple struct {
+	Address     common.Address `json:"address"        gencodec:"required"`
+	StorageKeys []common.Hash  `json:"storageKeys"    gencodec:"required"`
+}
+
+// StorageKeys returns the total number of storage keys in the access list.
+func (al AccessList) StorageKeys() int {
+	sum := 0
+	for _, tuple := range al {
+		sum += len(tuple.StorageKeys)
+	}
+	return sum
+}
+
+// AccessListTx is the data of EIP-2930 access list transactions.
+type AccessListTx struct {
+	ChainID    *big.Int        // destination chain ID
+	Nonce      uint64          // nonce of sender account
+	GasPrice   *big.Int        // wei per gas
+	Gas        uint64          // gas limit
+	To         *common.Address `rlp:"nil"` // nil means contract creation
+	Value      *big.Int        // wei amount
+	Data       []byte          // contract invocation input data
+	AccessList AccessList      // EIP-2930 access list
+	V, R, S    *big.Int        // signature values
+}
+
+// copy creates a deep copy of the transaction data and initializes all fields.
+func (tx *AccessListTx) copy() TxData {
+	cpy := &AccessListTx{
+		Nonce: tx.Nonce,
+		To:    tx.To, // TODO: copy pointed-to address
+		Data:  common.CopyBytes(tx.Data),
+		Gas:   tx.Gas,
+		// These are copied below.
+		AccessList: make(AccessList, len(tx.AccessList)),
+		Value:      new(big.Int),
+		ChainID:    new(big.Int),
+		GasPrice:   new(big.Int),
+		V:          new(big.Int),
+		R:          new(big.Int),
+		S:          new(big.Int),
+	}
+	copy(cpy.AccessList, tx.AccessList)
+	if tx.Value != nil {
+		cpy.Value.Set(tx.Value)
+	}
+	if tx.ChainID != nil {
+		cpy.ChainID.Set(tx.ChainID)
+	}
+	if tx.GasPrice != nil {
+		cpy.GasPrice.Set(tx.GasPrice)
+	}
+	if tx.V != nil {
+		cpy.V.Set(tx.V)
+	}
+	if tx.R != nil {
+		cpy.R.Set(tx.R)
+	}
+	if tx.S != nil {
+		cpy.S.Set(tx.S)
+	}
+	return cpy
+}
+
+// accessors for innerTx.
+
+func (tx *AccessListTx) txType() byte           { return AccessListTxType }
+func (tx *AccessListTx) chainID() *big.Int      { return tx.ChainID }
+func (tx *AccessListTx) protected() bool        { return true }
+func (tx *AccessListTx) accessList() AccessList { return tx.AccessList }
+func (tx *AccessListTx) data() []byte           { return tx.Data }
+func (tx *AccessListTx) gas() uint64            { return tx.Gas }
+func (tx *AccessListTx) gasPrice() *big.Int     { return tx.GasPrice }
+func (tx *AccessListTx) value() *big.Int        { return tx.Value }
+func (tx *AccessListTx) nonce() uint64          { return tx.Nonce }
+func (tx *AccessListTx) to() *common.Address    { return tx.To }
+
+func (tx *AccessListTx) rawSignatureValues() (v, r, s *big.Int) {
+	return tx.V, tx.R, tx.S
+}
+
+func (tx *AccessListTx) setSignatureValues(chainID, v, r, s *big.Int) {
+	tx.ChainID, tx.V, tx.R, tx.S = chainID, v, r, s
+}

core/types/block.go

@@ -29,7 +29,6 @@ import (
 
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
-	"github.com/XinFinOrg/XDPoSChain/crypto/sha3"
 	"github.com/XinFinOrg/XDPoSChain/rlp"
 )
 
@@ -155,13 +154,6 @@ func (h *Header) Size() common.StorageSize {
 	return common.StorageSize(unsafe.Sizeof(*h)) + common.StorageSize(len(h.Extra)+(h.Difficulty.BitLen()+h.Number.BitLen()+h.Time.BitLen())/8)
 }
 
-func rlpHash(x interface{}) (h common.Hash) {
-	hw := sha3.NewKeccak256()
-	rlp.Encode(hw, x)
-	hw.Sum(h[:0])
-	return h
-}
-
 // Body is a simple (mutable, non-safe) data container for storing and moving
 // a block's data contents (transactions and uncles) together.
 type Body struct {

core/types/block_test.go

@@ -17,13 +17,18 @@
 package types
 
 import (
+	"bytes"
+	"hash"
 	"math/big"
+	"reflect"
 	"testing"
 
-	"bytes"
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/math"
+	"github.com/XinFinOrg/XDPoSChain/crypto"
+	"github.com/XinFinOrg/XDPoSChain/params"
 	"github.com/XinFinOrg/XDPoSChain/rlp"
-	"reflect"
+	"golang.org/x/crypto/sha3"
 )
 
 // from bcValidBlockTest.json, "SimpleTx"
@@ -59,3 +64,152 @@ func TestBlockEncoding(t *testing.T) {
 		t.Errorf("encoded block mismatch:\ngot:  %x\nwant: %x", ourBlockEnc, blockEnc)
 	}
 }
+
+func TestEIP2718BlockEncoding(t *testing.T) {
+	blockEnc := common.FromHex("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")
+	var block Block
+	if err := rlp.DecodeBytes(blockEnc, &block); err != nil {
+		t.Fatal("decode error: ", err)
+	}
+
+	check := func(f string, got, want interface{}) {
+		if !reflect.DeepEqual(got, want) {
+			t.Errorf("%s mismatch: got %v, want %v", f, got, want)
+		}
+	}
+	check("Difficulty", block.Difficulty(), big.NewInt(131072))
+	check("GasLimit", block.GasLimit(), uint64(3141592))
+	check("GasUsed", block.GasUsed(), uint64(42000))
+	check("Coinbase", block.Coinbase(), common.HexToAddress("8888f1f195afa192cfee860698584c030f4c9db1"))
+	check("MixDigest", block.MixDigest(), common.HexToHash("bd4472abb6659ebe3ee06ee4d7b72a00a9f4d001caca51342001075469aff498"))
+	check("Root", block.Root(), common.HexToHash("ef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017"))
+	check("Nonce", block.Nonce(), uint64(0xa13a5a8c8f2bb1c4))
+	check("Time", block.Time().Uint64(), uint64(1426516743))
+	check("Size", block.Size(), common.StorageSize(len(blockEnc)))
+
+	// Create legacy tx.
+	to := common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87")
+	tx1 := NewTx(&LegacyTx{
+		Nonce:    0,
+		To:       &to,
+		Value:    big.NewInt(10),
+		Gas:      50000,
+		GasPrice: big.NewInt(10),
+	})
+	sig := common.Hex2Bytes("9bea4c4daac7c7c52e093e6a4c35dbbcf8856f1af7b059ba20253e70848d094f8a8fae537ce25ed8cb5af9adac3f141af69bd515bd2ba031522df09b97dd72b100")
+	tx1, _ = tx1.WithSignature(HomesteadSigner{}, sig)
+
+	// Create ACL tx.
+	addr := common.HexToAddress("0x0000000000000000000000000000000000000001")
+	tx2 := NewTx(&AccessListTx{
+		ChainID:    big.NewInt(1),
+		Nonce:      0,
+		To:         &to,
+		Gas:        123457,
+		GasPrice:   big.NewInt(10),
+		AccessList: AccessList{{Address: addr, StorageKeys: []common.Hash{{0}}}},
+	})
+	sig2 := common.Hex2Bytes("3dbacc8d0259f2508625e97fdfc57cd85fdd16e5821bc2c10bdd1a52649e8335476e10695b183a87b0aa292a7f4b78ef0c3fbe62aa2c42c84e1d9c3da159ef1401")
+	tx2, _ = tx2.WithSignature(NewEIP2930Signer(big.NewInt(1)), sig2)
+
+	check("len(Transactions)", len(block.Transactions()), 2)
+	check("Transactions[0].Hash", block.Transactions()[0].Hash(), tx1.Hash())
+	check("Transactions[1].Hash", block.Transactions()[1].Hash(), tx2.Hash())
+	check("Transactions[1].Type()", block.Transactions()[1].Type(), uint8(AccessListTxType))
+
+	ourBlockEnc, err := rlp.EncodeToBytes(&block)
+	if err != nil {
+		t.Fatal("encode error: ", err)
+	}
+	if !bytes.Equal(ourBlockEnc, blockEnc) {
+		t.Errorf("encoded block mismatch:\ngot:  %x\nwant: %x", ourBlockEnc, blockEnc)
+	}
+}
+
+func TestUncleHash(t *testing.T) {
+	uncles := make([]*Header, 0)
+	h := CalcUncleHash(uncles)
+	exp := common.HexToHash("1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347")
+	if h != exp {
+		t.Fatalf("empty uncle hash is wrong, got %x != %x", h, exp)
+	}
+}
+
+var benchBuffer = bytes.NewBuffer(make([]byte, 0, 32000))
+
+func BenchmarkEncodeBlock(b *testing.B) {
+	block := makeBenchBlock()
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchBuffer.Reset()
+		if err := rlp.Encode(benchBuffer, block); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+// testHasher is the helper tool for transaction/receipt list hashing.
+// The original hasher is trie, in order to get rid of import cycle,
+// use the testing hasher instead.
+type testHasher struct {
+	hasher hash.Hash
+}
+
+func newHasher() *testHasher {
+	return &testHasher{hasher: sha3.NewLegacyKeccak256()}
+}
+
+func (h *testHasher) Reset() {
+	h.hasher.Reset()
+}
+
+func (h *testHasher) Update(key, val []byte) {
+	h.hasher.Write(key)
+	h.hasher.Write(val)
+}
+
+func (h *testHasher) Hash() common.Hash {
+	return common.BytesToHash(h.hasher.Sum(nil))
+}
+
+func makeBenchBlock() *Block {
+	var (
+		key, _   = crypto.GenerateKey()
+		txs      = make([]*Transaction, 70)
+		receipts = make([]*Receipt, len(txs))
+		signer   = LatestSigner(params.TestChainConfig)
+		uncles   = make([]*Header, 3)
+	)
+	header := &Header{
+		Difficulty: math.BigPow(11, 11),
+		Number:     math.BigPow(2, 9),
+		GasLimit:   12345678,
+		GasUsed:    1476322,
+		Time:       big.NewInt(9876543),
+		Extra:      []byte("coolest block on chain"),
+	}
+	for i := range txs {
+		amount := math.BigPow(2, int64(i))
+		price := big.NewInt(300000)
+		data := make([]byte, 100)
+		tx := NewTransaction(uint64(i), common.Address{}, amount, 123457, price, data)
+		signedTx, err := SignTx(tx, signer, key)
+		if err != nil {
+			panic(err)
+		}
+		txs[i] = signedTx
+		receipts[i] = NewReceipt(make([]byte, 32), false, tx.Gas())
+	}
+	for i := range uncles {
+		uncles[i] = &Header{
+			Difficulty: math.BigPow(11, 11),
+			Number:     math.BigPow(2, 9),
+			GasLimit:   12345678,
+			GasUsed:    1476322,
+			Time:       big.NewInt(9876543),
+			Extra:      []byte("benchmark uncle"),
+		}
+	}
+	return NewBlock(header, txs, uncles, receipts)
+}

core/types/gen_access_tuple.go

@@ -0,0 +1,43 @@
+// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
+
+package types
+
+import (
+	"encoding/json"
+	"errors"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+)
+
+// MarshalJSON marshals as JSON.
+func (a AccessTuple) MarshalJSON() ([]byte, error) {
+	type AccessTuple struct {
+		Address     common.Address `json:"address"        gencodec:"required"`
+		StorageKeys []common.Hash  `json:"storageKeys"    gencodec:"required"`
+	}
+	var enc AccessTuple
+	enc.Address = a.Address
+	enc.StorageKeys = a.StorageKeys
+	return json.Marshal(&enc)
+}
+
+// UnmarshalJSON unmarshals from JSON.
+func (a *AccessTuple) UnmarshalJSON(input []byte) error {
+	type AccessTuple struct {
+		Address     *common.Address `json:"address"        gencodec:"required"`
+		StorageKeys []common.Hash   `json:"storageKeys"    gencodec:"required"`
+	}
+	var dec AccessTuple
+	if err := json.Unmarshal(input, &dec); err != nil {
+		return err
+	}
+	if dec.Address == nil {
+		return errors.New("missing required field 'address' for AccessTuple")
+	}
+	a.Address = *dec.Address
+	if dec.StorageKeys == nil {
+		return errors.New("missing required field 'storageKeys' for AccessTuple")
+	}
+	a.StorageKeys = dec.StorageKeys
+	return nil
+}

core/types/gen_receipt_json.go

@@ -5,6 +5,7 @@ package types
 import (
 	"encoding/json"
 	"errors"
+	"math/big"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
@@ -12,8 +13,10 @@ import (
 
 var _ = (*receiptMarshaling)(nil)
 
+// MarshalJSON marshals as JSON.
 func (r Receipt) MarshalJSON() ([]byte, error) {
 	type Receipt struct {
+		Type              hexutil.Uint64 `json:"type,omitempty"`
 		PostState         hexutil.Bytes  `json:"root"`
 		Status            hexutil.Uint   `json:"status"`
 		CumulativeGasUsed hexutil.Uint64 `json:"cumulativeGasUsed" gencodec:"required"`
@@ -22,8 +25,12 @@ func (r Receipt) MarshalJSON() ([]byte, error) {
 		TxHash            common.Hash    `json:"transactionHash" gencodec:"required"`
 		ContractAddress   common.Address `json:"contractAddress"`
 		GasUsed           hexutil.Uint64 `json:"gasUsed" gencodec:"required"`
+		BlockHash         common.Hash    `json:"blockHash,omitempty"`
+		BlockNumber       *hexutil.Big   `json:"blockNumber,omitempty"`
+		TransactionIndex  hexutil.Uint   `json:"transactionIndex"`
 	}
 	var enc Receipt
+	enc.Type = hexutil.Uint64(r.Type)
 	enc.PostState = r.PostState
 	enc.Status = hexutil.Uint(r.Status)
 	enc.CumulativeGasUsed = hexutil.Uint64(r.CumulativeGasUsed)
@@ -32,11 +39,16 @@ func (r Receipt) MarshalJSON() ([]byte, error) {
 	enc.TxHash = r.TxHash
 	enc.ContractAddress = r.ContractAddress
 	enc.GasUsed = hexutil.Uint64(r.GasUsed)
+	enc.BlockHash = r.BlockHash
+	enc.BlockNumber = (*hexutil.Big)(r.BlockNumber)
+	enc.TransactionIndex = hexutil.Uint(r.TransactionIndex)
 	return json.Marshal(&enc)
 }
 
+// UnmarshalJSON unmarshals from JSON.
 func (r *Receipt) UnmarshalJSON(input []byte) error {
 	type Receipt struct {
+		Type              *hexutil.Uint64 `json:"type,omitempty"`
 		PostState         *hexutil.Bytes  `json:"root"`
 		Status            *hexutil.Uint   `json:"status"`
 		CumulativeGasUsed *hexutil.Uint64 `json:"cumulativeGasUsed" gencodec:"required"`
@@ -45,11 +57,17 @@ func (r *Receipt) UnmarshalJSON(input []byte) error {
 		TxHash            *common.Hash    `json:"transactionHash" gencodec:"required"`
 		ContractAddress   *common.Address `json:"contractAddress"`
 		GasUsed           *hexutil.Uint64 `json:"gasUsed" gencodec:"required"`
+		BlockHash         *common.Hash    `json:"blockHash,omitempty"`
+		BlockNumber       *hexutil.Big    `json:"blockNumber,omitempty"`
+		TransactionIndex  *hexutil.Uint   `json:"transactionIndex"`
 	}
 	var dec Receipt
 	if err := json.Unmarshal(input, &dec); err != nil {
 		return err
 	}
+	if dec.Type != nil {
+		r.Type = uint8(*dec.Type)
+	}
 	if dec.PostState != nil {
 		r.PostState = *dec.PostState
 	}
@@ -79,5 +97,14 @@ func (r *Receipt) UnmarshalJSON(input []byte) error {
 		return errors.New("missing required field 'gasUsed' for Receipt")
 	}
 	r.GasUsed = uint64(*dec.GasUsed)
+	if dec.BlockHash != nil {
+		r.BlockHash = *dec.BlockHash
+	}
+	if dec.BlockNumber != nil {
+		r.BlockNumber = (*big.Int)(dec.BlockNumber)
+	}
+	if dec.TransactionIndex != nil {
+		r.TransactionIndex = uint(*dec.TransactionIndex)
+	}
 	return nil
 }

core/types/gen_tx_json.go

@@ -1,99 +0,0 @@
-// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
-
-package types
-
-import (
-	"encoding/json"
-	"errors"
-	"math/big"
-
-	"github.com/XinFinOrg/XDPoSChain/common"
-	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
-)
-
-var _ = (*txdataMarshaling)(nil)
-
-func (t txdata) MarshalJSON() ([]byte, error) {
-	type txdata struct {
-		AccountNonce hexutil.Uint64  `json:"nonce"    gencodec:"required"`
-		Price        *hexutil.Big    `json:"gasPrice" gencodec:"required"`
-		GasLimit     hexutil.Uint64  `json:"gas"      gencodec:"required"`
-		Recipient    *common.Address `json:"to"       rlp:"nil"`
-		Amount       *hexutil.Big    `json:"value"    gencodec:"required"`
-		Payload      hexutil.Bytes   `json:"input"    gencodec:"required"`
-		V            *hexutil.Big    `json:"v" gencodec:"required"`
-		R            *hexutil.Big    `json:"r" gencodec:"required"`
-		S            *hexutil.Big    `json:"s" gencodec:"required"`
-		Hash         *common.Hash    `json:"hash" rlp:"-"`
-	}
-	var enc txdata
-	enc.AccountNonce = hexutil.Uint64(t.AccountNonce)
-	enc.Price = (*hexutil.Big)(t.Price)
-	enc.GasLimit = hexutil.Uint64(t.GasLimit)
-	enc.Recipient = t.Recipient
-	enc.Amount = (*hexutil.Big)(t.Amount)
-	enc.Payload = t.Payload
-	enc.V = (*hexutil.Big)(t.V)
-	enc.R = (*hexutil.Big)(t.R)
-	enc.S = (*hexutil.Big)(t.S)
-	enc.Hash = t.Hash
-	return json.Marshal(&enc)
-}
-
-func (t *txdata) UnmarshalJSON(input []byte) error {
-	type txdata struct {
-		AccountNonce *hexutil.Uint64 `json:"nonce"    gencodec:"required"`
-		Price        *hexutil.Big    `json:"gasPrice" gencodec:"required"`
-		GasLimit     *hexutil.Uint64 `json:"gas"      gencodec:"required"`
-		Recipient    *common.Address `json:"to"       rlp:"nil"`
-		Amount       *hexutil.Big    `json:"value"    gencodec:"required"`
-		Payload      *hexutil.Bytes  `json:"input"    gencodec:"required"`
-		V            *hexutil.Big    `json:"v" gencodec:"required"`
-		R            *hexutil.Big    `json:"r" gencodec:"required"`
-		S            *hexutil.Big    `json:"s" gencodec:"required"`
-		Hash         *common.Hash    `json:"hash" rlp:"-"`
-	}
-	var dec txdata
-	if err := json.Unmarshal(input, &dec); err != nil {
-		return err
-	}
-	if dec.AccountNonce == nil {
-		return errors.New("missing required field 'nonce' for txdata")
-	}
-	t.AccountNonce = uint64(*dec.AccountNonce)
-	if dec.Price == nil {
-		return errors.New("missing required field 'gasPrice' for txdata")
-	}
-	t.Price = (*big.Int)(dec.Price)
-	if dec.GasLimit == nil {
-		return errors.New("missing required field 'gas' for txdata")
-	}
-	t.GasLimit = uint64(*dec.GasLimit)
-	if dec.Recipient != nil {
-		t.Recipient = dec.Recipient
-	}
-	if dec.Amount == nil {
-		return errors.New("missing required field 'value' for txdata")
-	}
-	t.Amount = (*big.Int)(dec.Amount)
-	if dec.Payload == nil {
-		return errors.New("missing required field 'input' for txdata")
-	}
-	t.Payload = *dec.Payload
-	if dec.V == nil {
-		return errors.New("missing required field 'v' for txdata")
-	}
-	t.V = (*big.Int)(dec.V)
-	if dec.R == nil {
-		return errors.New("missing required field 'r' for txdata")
-	}
-	t.R = (*big.Int)(dec.R)
-	if dec.S == nil {
-		return errors.New("missing required field 's' for txdata")
-	}
-	t.S = (*big.Int)(dec.S)
-	if dec.Hash != nil {
-		t.Hash = dec.Hash
-	}
-	return nil
-}

core/types/hashing.go

@@ -0,0 +1,59 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package types
+
+import (
+	"bytes"
+	"sync"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/crypto"
+	"github.com/XinFinOrg/XDPoSChain/rlp"
+	"golang.org/x/crypto/sha3"
+)
+
+// hasherPool holds LegacyKeccak256 hashers for rlpHash.
+var hasherPool = sync.Pool{
+	New: func() interface{} { return sha3.NewLegacyKeccak256() },
+}
+
+// deriveBufferPool holds temporary encoder buffers for DeriveSha and TX encoding.
+var encodeBufferPool = sync.Pool{
+	New: func() interface{} { return new(bytes.Buffer) },
+}
+
+// rlpHash encodes x and hashes the encoded bytes.
+func rlpHash(x interface{}) (h common.Hash) {
+	sha := hasherPool.Get().(crypto.KeccakState)
+	defer hasherPool.Put(sha)
+	sha.Reset()
+	rlp.Encode(sha, x)
+	sha.Read(h[:])
+	return h
+}
+
+// prefixedRlpHash writes the prefix into the hasher before rlp-encoding x.
+// It's used for typed transactions.
+func prefixedRlpHash(prefix byte, x interface{}) (h common.Hash) {
+	sha := hasherPool.Get().(crypto.KeccakState)
+	defer hasherPool.Put(sha)
+	sha.Reset()
+	sha.Write([]byte{prefix})
+	rlp.Encode(sha, x)
+	sha.Read(h[:])
+	return h
+}

core/types/legacy_tx.go

@@ -0,0 +1,111 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package types
+
+import (
+	"math/big"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+)
+
+// LegacyTx is the transaction data of regular Ethereum transactions.
+type LegacyTx struct {
+	Nonce    uint64          // nonce of sender account
+	GasPrice *big.Int        // wei per gas
+	Gas      uint64          // gas limit
+	To       *common.Address `rlp:"nil"` // nil means contract creation
+	Value    *big.Int        // wei amount
+	Data     []byte          // contract invocation input data
+	V, R, S  *big.Int        // signature values
+}
+
+// NewTransaction creates an unsigned legacy transaction.
+// Deprecated: use NewTx instead.
+func NewTransaction(nonce uint64, to common.Address, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
+	return NewTx(&LegacyTx{
+		Nonce:    nonce,
+		To:       &to,
+		Value:    amount,
+		Gas:      gasLimit,
+		GasPrice: gasPrice,
+		Data:     data,
+	})
+}
+
+// NewContractCreation creates an unsigned legacy transaction.
+// Deprecated: use NewTx instead.
+func NewContractCreation(nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
+	return NewTx(&LegacyTx{
+		Nonce:    nonce,
+		Value:    amount,
+		Gas:      gasLimit,
+		GasPrice: gasPrice,
+		Data:     data,
+	})
+}
+
+// copy creates a deep copy of the transaction data and initializes all fields.
+func (tx *LegacyTx) copy() TxData {
+	cpy := &LegacyTx{
+		Nonce: tx.Nonce,
+		To:    tx.To, // TODO: copy pointed-to address
+		Data:  common.CopyBytes(tx.Data),
+		Gas:   tx.Gas,
+		// These are initialized below.
+		Value:    new(big.Int),
+		GasPrice: new(big.Int),
+		V:        new(big.Int),
+		R:        new(big.Int),
+		S:        new(big.Int),
+	}
+	if tx.Value != nil {
+		cpy.Value.Set(tx.Value)
+	}
+	if tx.GasPrice != nil {
+		cpy.GasPrice.Set(tx.GasPrice)
+	}
+	if tx.V != nil {
+		cpy.V.Set(tx.V)
+	}
+	if tx.R != nil {
+		cpy.R.Set(tx.R)
+	}
+	if tx.S != nil {
+		cpy.S.Set(tx.S)
+	}
+	return cpy
+}
+
+// accessors for innerTx.
+
+func (tx *LegacyTx) txType() byte           { return LegacyTxType }
+func (tx *LegacyTx) chainID() *big.Int      { return deriveChainId(tx.V) }
+func (tx *LegacyTx) accessList() AccessList { return nil }
+func (tx *LegacyTx) data() []byte           { return tx.Data }
+func (tx *LegacyTx) gas() uint64            { return tx.Gas }
+func (tx *LegacyTx) gasPrice() *big.Int     { return tx.GasPrice }
+func (tx *LegacyTx) value() *big.Int        { return tx.Value }
+func (tx *LegacyTx) nonce() uint64          { return tx.Nonce }
+func (tx *LegacyTx) to() *common.Address    { return tx.To }
+
+func (tx *LegacyTx) rawSignatureValues() (v, r, s *big.Int) {
+	return tx.V, tx.R, tx.S
+}
+
+func (tx *LegacyTx) setSignatureValues(chainID, v, r, s *big.Int) {
+	tx.V, tx.R, tx.S = v, r, s
+}

core/types/receipt.go

@@ -18,8 +18,10 @@ package types
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
+	"math/big"
 	"unsafe"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
@@ -34,6 +36,9 @@ var (
 	receiptStatusSuccessfulRLP = []byte{0x01}
 )
 
+// This error is returned when a typed receipt is decoded, but the string is empty.
+var errEmptyTypedReceipt = errors.New("empty typed receipt bytes")
+
 const (
 	// ReceiptStatusFailed is the status code of a transaction if execution failed.
 	ReceiptStatusFailed = uint(0)
@@ -44,24 +49,35 @@ const (
 
 // Receipt represents the results of a transaction.
 type Receipt struct {
-	// Consensus fields
+	// Consensus fields: These fields are defined by the Yellow Paper
+	Type              uint8  `json:"type,omitempty"`
 	PostState         []byte `json:"root"`
 	Status            uint   `json:"status"`
 	CumulativeGasUsed uint64 `json:"cumulativeGasUsed" gencodec:"required"`
 	Bloom             Bloom  `json:"logsBloom"         gencodec:"required"`
 	Logs              []*Log `json:"logs"              gencodec:"required"`
 
-	// Implementation fields (don't reorder!)
+	// Implementation fields: These fields are added by geth when processing a transaction.
+	// They are stored in the chain database.
 	TxHash          common.Hash    `json:"transactionHash" gencodec:"required"`
 	ContractAddress common.Address `json:"contractAddress"`
 	GasUsed         uint64         `json:"gasUsed" gencodec:"required"`
+
+	// Inclusion information: These fields provide information about the inclusion of the
+	// transaction corresponding to this receipt.
+	BlockHash        common.Hash `json:"blockHash,omitempty"`
+	BlockNumber      *big.Int    `json:"blockNumber,omitempty"`
+	TransactionIndex uint        `json:"transactionIndex"`
 }
 
 type receiptMarshaling struct {
+	Type              hexutil.Uint64
 	PostState         hexutil.Bytes
 	Status            hexutil.Uint
 	CumulativeGasUsed hexutil.Uint64
 	GasUsed           hexutil.Uint64
+	BlockNumber       *hexutil.Big
+	TransactionIndex  hexutil.Uint
 }
 
 // receiptRLP is the consensus encoding of a receipt.
@@ -72,7 +88,18 @@ type receiptRLP struct {
 	Logs              []*Log
 }
 
-type receiptStorageRLP struct {
+// v4StoredReceiptRLP is the storage encoding of a receipt used in database version 4.
+type v4StoredReceiptRLP struct {
+	PostStateOrStatus []byte
+	CumulativeGasUsed uint64
+	TxHash            common.Hash
+	ContractAddress   common.Address
+	Logs              []*LogForStorage
+	GasUsed           uint64
+}
+
+// v3StoredReceiptRLP is the original storage encoding of a receipt including some unnecessary fields.
+type v3StoredReceiptRLP struct {
 	PostStateOrStatus []byte
 	CumulativeGasUsed uint64
 	Bloom             Bloom
@@ -83,8 +110,13 @@ type receiptStorageRLP struct {
 }
 
 // NewReceipt creates a barebone transaction receipt, copying the init fields.
+// Deprecated: create receipts using a struct literal instead.
 func NewReceipt(root []byte, failed bool, cumulativeGasUsed uint64) *Receipt {
-	r := &Receipt{PostState: common.CopyBytes(root), CumulativeGasUsed: cumulativeGasUsed}
+	r := &Receipt{
+		Type:              LegacyTxType,
+		PostState:         common.CopyBytes(root),
+		CumulativeGasUsed: cumulativeGasUsed,
+	}
 	if failed {
 		r.Status = ReceiptStatusFailed
 	} else {
@@ -96,21 +128,65 @@ func NewReceipt(root []byte, failed bool, cumulativeGasUsed uint64) *Receipt {
 // EncodeRLP implements rlp.Encoder, and flattens the consensus fields of a receipt
 // into an RLP stream. If no post state is present, byzantium fork is assumed.
 func (r *Receipt) EncodeRLP(w io.Writer) error {
-	return rlp.Encode(w, &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs})
+	data := &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs}
+	if r.Type == LegacyTxType {
+		return rlp.Encode(w, data)
+	}
+	// It's an EIP-2718 typed TX receipt.
+	if r.Type != AccessListTxType {
+		return ErrTxTypeNotSupported
+	}
+	buf := encodeBufferPool.Get().(*bytes.Buffer)
+	defer encodeBufferPool.Put(buf)
+	buf.Reset()
+	buf.WriteByte(r.Type)
+	if err := rlp.Encode(buf, data); err != nil {
+		return err
+	}
+	return rlp.Encode(w, buf.Bytes())
 }
 
 // DecodeRLP implements rlp.Decoder, and loads the consensus fields of a receipt
 // from an RLP stream.
 func (r *Receipt) DecodeRLP(s *rlp.Stream) error {
-	var dec receiptRLP
-	if err := s.Decode(&dec); err != nil {
+	kind, _, err := s.Kind()
+	switch {
+	case err != nil:
 		return err
+	case kind == rlp.List:
+		// It's a legacy receipt.
+		var dec receiptRLP
+		if err := s.Decode(&dec); err != nil {
+			return err
+		}
+		r.Type = LegacyTxType
+		return r.setFromRLP(dec)
+	case kind == rlp.String:
+		// It's an EIP-2718 typed tx receipt.
+		b, err := s.Bytes()
+		if err != nil {
+			return err
+		}
+		if len(b) == 0 {
+			return errEmptyTypedReceipt
+		}
+		r.Type = b[0]
+		if r.Type == AccessListTxType {
+			var dec receiptRLP
+			if err := rlp.DecodeBytes(b[1:], &dec); err != nil {
+				return err
+			}
+			return r.setFromRLP(dec)
+		}
+		return ErrTxTypeNotSupported
+	default:
+		return rlp.ErrExpectedList
 	}
-	if err := r.setStatus(dec.PostStateOrStatus); err != nil {
-		return err
-	}
-	r.CumulativeGasUsed, r.Bloom, r.Logs = dec.CumulativeGasUsed, dec.Bloom, dec.Logs
-	return nil
+}
+
+func (r *Receipt) setFromRLP(data receiptRLP) error {
+	r.CumulativeGasUsed, r.Bloom, r.Logs = data.CumulativeGasUsed, data.Bloom, data.Logs
+	return r.setStatus(data.PostStateOrStatus)
 }
 
 func (r *Receipt) setStatus(postStateOrStatus []byte) error {
@@ -141,7 +217,6 @@ func (r *Receipt) statusEncoding() []byte {
 // to approximate and limit the memory consumption of various caches.
 func (r *Receipt) Size() common.StorageSize {
 	size := common.StorageSize(unsafe.Sizeof(*r)) + common.StorageSize(len(r.PostState))
-
 	size += common.StorageSize(len(r.Logs)) * common.StorageSize(unsafe.Sizeof(Log{}))
 	for _, log := range r.Logs {
 		size += common.StorageSize(len(log.Topics)*common.HashLength + len(log.Data))
@@ -164,7 +239,7 @@ type ReceiptForStorage Receipt
 // EncodeRLP implements rlp.Encoder, and flattens all content fields of a receipt
 // into an RLP stream.
 func (r *ReceiptForStorage) EncodeRLP(w io.Writer) error {
-	enc := &receiptStorageRLP{
+	enc := &v3StoredReceiptRLP{
 		PostStateOrStatus: (*Receipt)(r).statusEncoding(),
 		CumulativeGasUsed: r.CumulativeGasUsed,
 		Bloom:             r.Bloom,
@@ -182,25 +257,64 @@ func (r *ReceiptForStorage) EncodeRLP(w io.Writer) error {
 // DecodeRLP implements rlp.Decoder, and loads both consensus and implementation
 // fields of a receipt from an RLP stream.
 func (r *ReceiptForStorage) DecodeRLP(s *rlp.Stream) error {
-	var dec receiptStorageRLP
-	if err := s.Decode(&dec); err != nil {
+	// Retrieve the entire receipt blob as we need to try multiple decoders
+	blob, err := s.Raw()
+	if err != nil {
 		return err
 	}
-	if err := (*Receipt)(r).setStatus(dec.PostStateOrStatus); err != nil {
+	// Try decoding from the newest format for future proofness, then the older one
+	// for old nodes that just upgraded. V4 was an intermediate unreleased format so
+	// we do need to decode it, but it's not common (try last).
+	if err := decodeV3StoredReceiptRLP(r, blob); err == nil {
+		return nil
+	}
+	return decodeV4StoredReceiptRLP(r, blob)
+}
+
+func decodeV3StoredReceiptRLP(r *ReceiptForStorage, blob []byte) error {
+	var stored v3StoredReceiptRLP
+	if err := rlp.DecodeBytes(blob, &stored); err != nil {
+		return err
+	}
+	if err := (*Receipt)(r).setStatus(stored.PostStateOrStatus); err != nil {
 		return err
 	}
 	// Assign the consensus fields
-	r.CumulativeGasUsed, r.Bloom = dec.CumulativeGasUsed, dec.Bloom
-	r.Logs = make([]*Log, len(dec.Logs))
-	for i, log := range dec.Logs {
+	r.CumulativeGasUsed = stored.CumulativeGasUsed
+	r.Bloom = stored.Bloom
+	r.Logs = make([]*Log, len(stored.Logs))
+	for i, log := range stored.Logs {
 		r.Logs[i] = (*Log)(log)
 	}
 	// Assign the implementation fields
-	r.TxHash, r.ContractAddress, r.GasUsed = dec.TxHash, dec.ContractAddress, dec.GasUsed
+	r.TxHash = stored.TxHash
+	r.ContractAddress = stored.ContractAddress
+	r.GasUsed = stored.GasUsed
 	return nil
 }
 
-// Receipts is a wrapper around a Receipt array to implement DerivableList.
+func decodeV4StoredReceiptRLP(r *ReceiptForStorage, blob []byte) error {
+	var stored v4StoredReceiptRLP
+	if err := rlp.DecodeBytes(blob, &stored); err != nil {
+		return err
+	}
+	if err := (*Receipt)(r).setStatus(stored.PostStateOrStatus); err != nil {
+		return err
+	}
+	r.CumulativeGasUsed = stored.CumulativeGasUsed
+	r.TxHash = stored.TxHash
+	r.ContractAddress = stored.ContractAddress
+	r.GasUsed = stored.GasUsed
+	r.Logs = make([]*Log, len(stored.Logs))
+	for i, log := range stored.Logs {
+		r.Logs[i] = (*Log)(log)
+	}
+	r.Bloom = CreateBloom(Receipts{(*Receipt)(r)})
+
+	return nil
+}
+
+// Receipts implements DerivableList for receipts.
 type Receipts []*Receipt
 
 // Len returns the number of receipts in this list.

core/types/receipt_test.go

@@ -0,0 +1,170 @@
+// Copyright 2019 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package types
+
+import (
+	"bytes"
+	"math/big"
+	"reflect"
+	"testing"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/rlp"
+)
+
+func TestDecodeEmptyTypedReceipt(t *testing.T) {
+	input := []byte{0x80}
+	var r Receipt
+	err := rlp.DecodeBytes(input, &r)
+	if err != errEmptyTypedReceipt {
+		t.Fatal("wrong error:", err)
+	}
+}
+
+func TestLegacyReceiptDecoding(t *testing.T) {
+	tests := []struct {
+		name   string
+		encode func(*Receipt) ([]byte, error)
+	}{
+		{
+			"V4StoredReceiptRLP",
+			encodeAsV4StoredReceiptRLP,
+		},
+		{
+			"V3StoredReceiptRLP",
+			encodeAsV3StoredReceiptRLP,
+		},
+	}
+
+	tx := NewTransaction(1, common.HexToAddress("0x1"), big.NewInt(1), 1, big.NewInt(1), nil)
+	receipt := &Receipt{
+		Status:            ReceiptStatusFailed,
+		CumulativeGasUsed: 1,
+		Logs: []*Log{
+			{
+				Address: common.BytesToAddress([]byte{0x11}),
+				Topics:  []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")},
+				Data:    []byte{0x01, 0x00, 0xff},
+			},
+			{
+				Address: common.BytesToAddress([]byte{0x01, 0x11}),
+				Topics:  []common.Hash{common.HexToHash("dead"), common.HexToHash("beef")},
+				Data:    []byte{0x01, 0x00, 0xff},
+			},
+		},
+		TxHash:          tx.Hash(),
+		ContractAddress: common.BytesToAddress([]byte{0x01, 0x11, 0x11}),
+		GasUsed:         111111,
+	}
+	receipt.Bloom = CreateBloom(Receipts{receipt})
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			enc, err := tc.encode(receipt)
+			if err != nil {
+				t.Fatalf("Error encoding receipt: %v", err)
+			}
+			var dec ReceiptForStorage
+			if err := rlp.DecodeBytes(enc, &dec); err != nil {
+				t.Fatalf("Error decoding RLP receipt: %v", err)
+			}
+			// Check whether all consensus fields are correct.
+			if dec.Status != receipt.Status {
+				t.Fatalf("Receipt status mismatch, want %v, have %v", receipt.Status, dec.Status)
+			}
+			if dec.CumulativeGasUsed != receipt.CumulativeGasUsed {
+				t.Fatalf("Receipt CumulativeGasUsed mismatch, want %v, have %v", receipt.CumulativeGasUsed, dec.CumulativeGasUsed)
+			}
+			if dec.Bloom != receipt.Bloom {
+				t.Fatalf("Bloom data mismatch, want %v, have %v", receipt.Bloom, dec.Bloom)
+			}
+			if len(dec.Logs) != len(receipt.Logs) {
+				t.Fatalf("Receipt log number mismatch, want %v, have %v", len(receipt.Logs), len(dec.Logs))
+			}
+			for i := 0; i < len(dec.Logs); i++ {
+				if dec.Logs[i].Address != receipt.Logs[i].Address {
+					t.Fatalf("Receipt log %d address mismatch, want %v, have %v", i, receipt.Logs[i].Address, dec.Logs[i].Address)
+				}
+				if !reflect.DeepEqual(dec.Logs[i].Topics, receipt.Logs[i].Topics) {
+					t.Fatalf("Receipt log %d topics mismatch, want %v, have %v", i, receipt.Logs[i].Topics, dec.Logs[i].Topics)
+				}
+				if !bytes.Equal(dec.Logs[i].Data, receipt.Logs[i].Data) {
+					t.Fatalf("Receipt log %d data mismatch, want %v, have %v", i, receipt.Logs[i].Data, dec.Logs[i].Data)
+				}
+			}
+		})
+	}
+}
+
+func encodeAsV4StoredReceiptRLP(want *Receipt) ([]byte, error) {
+	stored := &v4StoredReceiptRLP{
+		PostStateOrStatus: want.statusEncoding(),
+		CumulativeGasUsed: want.CumulativeGasUsed,
+		TxHash:            want.TxHash,
+		ContractAddress:   want.ContractAddress,
+		Logs:              make([]*LogForStorage, len(want.Logs)),
+		GasUsed:           want.GasUsed,
+	}
+	for i, log := range want.Logs {
+		stored.Logs[i] = (*LogForStorage)(log)
+	}
+	return rlp.EncodeToBytes(stored)
+}
+
+func encodeAsV3StoredReceiptRLP(want *Receipt) ([]byte, error) {
+	stored := &v3StoredReceiptRLP{
+		PostStateOrStatus: want.statusEncoding(),
+		CumulativeGasUsed: want.CumulativeGasUsed,
+		Bloom:             want.Bloom,
+		TxHash:            want.TxHash,
+		ContractAddress:   want.ContractAddress,
+		Logs:              make([]*LogForStorage, len(want.Logs)),
+		GasUsed:           want.GasUsed,
+	}
+	for i, log := range want.Logs {
+		stored.Logs[i] = (*LogForStorage)(log)
+	}
+	return rlp.EncodeToBytes(stored)
+}
+
+// TestTypedReceiptEncodingDecoding reproduces a flaw that existed in the receipt
+// rlp decoder, which failed due to a shadowing error.
+func TestTypedReceiptEncodingDecoding(t *testing.T) {
+	var payload = common.FromHex("f9043eb9010c01f90108018262d4b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0b9010c01f901080182cd14b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0b9010d01f901090183013754b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0b9010d01f90109018301a194b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0")
+	check := func(bundle []*Receipt) {
+		t.Helper()
+		for i, receipt := range bundle {
+			if got, want := receipt.Type, uint8(1); got != want {
+				t.Fatalf("bundle %d: got %x, want %x", i, got, want)
+			}
+		}
+	}
+	{
+		var bundle []*Receipt
+		rlp.DecodeBytes(payload, &bundle)
+		check(bundle)
+	}
+	{
+		var bundle []*Receipt
+		r := bytes.NewReader(payload)
+		s := rlp.NewStream(r, uint64(len(payload)))
+		if err := s.Decode(&bundle); err != nil {
+			t.Fatal(err)
+		}
+		check(bundle)
+	}
+}

core/types/transaction.go

@@ -24,9 +24,9 @@ import (
 	"io"
 	"math/big"
 	"sync/atomic"
+	"time"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
-	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
 	"github.com/XinFinOrg/XDPoSChain/crypto"
 	"github.com/XinFinOrg/XDPoSChain/rlp"
 )
@@ -35,6 +35,15 @@ import (
 
 var (
 	ErrInvalidSig               = errors.New("invalid transaction v, r, s values")
+	ErrUnexpectedProtection     = errors.New("transaction type does not supported EIP-155 protected signatures")
+	ErrInvalidTxType            = errors.New("transaction type not valid in this context")
+	ErrTxTypeNotSupported       = errors.New("transaction type not supported")
+	ErrGasFeeCapTooLow          = errors.New("fee cap less than base fee")
+	errShortTypedTx             = errors.New("typed transaction too short")
+	errInvalidYParity           = errors.New("'yParity' field must be 0 or 1")
+	errVYParityMismatch         = errors.New("'v' and 'yParity' fields do not match")
+	errVYParityMissing          = errors.New("missing 'yParity' or 'v' field in transaction")
+	errEmptyTypedTx             = errors.New("empty typed transaction bytes")
 	errNoSigner                 = errors.New("missing signing methods")
 	skipNonceDestinationAddress = map[string]bool{
 		common.XDCXAddr:                         true,
@@ -44,221 +53,318 @@ var (
 	}
 )
 
-// deriveSigner makes a *best* guess about which signer to use.
-func deriveSigner(V *big.Int) Signer {
-	if V.Sign() != 0 && isProtectedV(V) {
-		return NewEIP155Signer(deriveChainId(V))
-	} else {
-		return HomesteadSigner{}
-	}
-}
+// Transaction types.
+const (
+	LegacyTxType = iota
+	AccessListTxType
+)
 
+// Transaction is an Ethereum transaction.
 type Transaction struct {
-	data txdata
+	inner TxData    // Consensus contents of a transaction
+	time  time.Time // Time first seen locally (spam avoidance)
+
 	// caches
 	hash atomic.Value
 	size atomic.Value
 	from atomic.Value
 }
 
-type txdata struct {
-	AccountNonce uint64          `json:"nonce"    gencodec:"required"`
-	Price        *big.Int        `json:"gasPrice" gencodec:"required"`
-	GasLimit     uint64          `json:"gas"      gencodec:"required"`
-	Recipient    *common.Address `json:"to"       rlp:"nil"` // nil means contract creation
-	Amount       *big.Int        `json:"value"    gencodec:"required"`
-	Payload      []byte          `json:"input"    gencodec:"required"`
-
-	// Signature values
-	V *big.Int `json:"v" gencodec:"required"`
-	R *big.Int `json:"r" gencodec:"required"`
-	S *big.Int `json:"s" gencodec:"required"`
-
-	// This is only used when marshaling to JSON.
-	Hash *common.Hash `json:"hash" rlp:"-"`
+// NewTx creates a new transaction.
+func NewTx(inner TxData) *Transaction {
+	tx := new(Transaction)
+	tx.setDecoded(inner.copy(), 0)
+	return tx
 }
 
-type txdataMarshaling struct {
-	AccountNonce hexutil.Uint64
-	Price        *hexutil.Big
-	GasLimit     hexutil.Uint64
-	Amount       *hexutil.Big
-	Payload      hexutil.Bytes
-	V            *hexutil.Big
-	R            *hexutil.Big
-	S            *hexutil.Big
+// TxData is the underlying data of a transaction.
+//
+// This is implemented by LegacyTx and AccessListTx.
+type TxData interface {
+	txType() byte // returns the type ID
+	copy() TxData // creates a deep copy and initializes all fields
+
+	chainID() *big.Int
+	accessList() AccessList
+	data() []byte
+	gas() uint64
+	gasPrice() *big.Int
+	value() *big.Int
+	nonce() uint64
+	to() *common.Address
+
+	rawSignatureValues() (v, r, s *big.Int)
+	setSignatureValues(chainID, v, r, s *big.Int)
 }
 
-func NewTransaction(nonce uint64, to common.Address, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
-	return newTransaction(nonce, &to, amount, gasLimit, gasPrice, data)
-}
-
-func NewContractCreation(nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
-	return newTransaction(nonce, nil, amount, gasLimit, gasPrice, data)
-}
-
-func newTransaction(nonce uint64, to *common.Address, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte) *Transaction {
-	if len(data) > 0 {
-		data = common.CopyBytes(data)
+// EncodeRLP implements rlp.Encoder
+func (tx *Transaction) EncodeRLP(w io.Writer) error {
+	if tx.Type() == LegacyTxType {
+		return rlp.Encode(w, tx.inner)
 	}
-	d := txdata{
-		AccountNonce: nonce,
-		Recipient:    to,
-		Payload:      data,
-		Amount:       new(big.Int),
-		GasLimit:     gasLimit,
-		Price:        new(big.Int),
-		V:            new(big.Int),
-		R:            new(big.Int),
-		S:            new(big.Int),
+	// It's an EIP-2718 typed TX envelope.
+	buf := encodeBufferPool.Get().(*bytes.Buffer)
+	defer encodeBufferPool.Put(buf)
+	buf.Reset()
+	if err := tx.encodeTyped(buf); err != nil {
+		return err
 	}
-	if amount != nil {
-		d.Amount.Set(amount)
+	return rlp.Encode(w, buf.Bytes())
+}
+
+// encodeTyped writes the canonical encoding of a typed transaction to w.
+func (tx *Transaction) encodeTyped(w *bytes.Buffer) error {
+	w.WriteByte(tx.Type())
+	return rlp.Encode(w, tx.inner)
+}
+
+// MarshalBinary returns the canonical encoding of the transaction.
+// For legacy transactions, it returns the RLP encoding. For EIP-2718 typed
+// transactions, it returns the type and payload.
+func (tx *Transaction) MarshalBinary() ([]byte, error) {
+	if tx.Type() == LegacyTxType {
+		return rlp.EncodeToBytes(tx.inner)
 	}
-	if gasPrice != nil {
-		d.Price.Set(gasPrice)
+	var buf bytes.Buffer
+	err := tx.encodeTyped(&buf)
+	return buf.Bytes(), err
+}
+
+// DecodeRLP implements rlp.Decoder
+func (tx *Transaction) DecodeRLP(s *rlp.Stream) error {
+	kind, size, err := s.Kind()
+	switch {
+	case err != nil:
+		return err
+	case kind == rlp.List:
+		// It's a legacy transaction.
+		var inner LegacyTx
+		err := s.Decode(&inner)
+		if err == nil {
+			tx.setDecoded(&inner, int(rlp.ListSize(size)))
+		}
+		return err
+	case kind == rlp.String:
+		// It's an EIP-2718 typed TX envelope.
+		var b []byte
+		if b, err = s.Bytes(); err != nil {
+			return err
+		}
+		inner, err := tx.decodeTyped(b)
+		if err == nil {
+			tx.setDecoded(inner, len(b))
+		}
+		return err
+	default:
+		return rlp.ErrExpectedList
+	}
+}
+
+// UnmarshalBinary decodes the canonical encoding of transactions.
+// It supports legacy RLP transactions and EIP2718 typed transactions.
+func (tx *Transaction) UnmarshalBinary(b []byte) error {
+	if len(b) > 0 && b[0] > 0x7f {
+		// It's a legacy transaction.
+		var data LegacyTx
+		err := rlp.DecodeBytes(b, &data)
+		if err != nil {
+			return err
+		}
+		tx.setDecoded(&data, len(b))
+		return nil
+	}
+	// It's an EIP2718 typed transaction envelope.
+	inner, err := tx.decodeTyped(b)
+	if err != nil {
+		return err
+	}
+	tx.setDecoded(inner, len(b))
+	return nil
+}
+
+// decodeTyped decodes a typed transaction from the canonical format.
+func (tx *Transaction) decodeTyped(b []byte) (TxData, error) {
+	if len(b) == 0 {
+		return nil, errEmptyTypedTx
+	}
+	switch b[0] {
+	case AccessListTxType:
+		var inner AccessListTx
+		err := rlp.DecodeBytes(b[1:], &inner)
+		return &inner, err
+	default:
+		return nil, ErrTxTypeNotSupported
+	}
+}
+
+// setDecoded sets the inner transaction and size after decoding.
+func (tx *Transaction) setDecoded(inner TxData, size int) {
+	tx.inner = inner
+	tx.time = time.Now()
+	if size > 0 {
+		tx.size.Store(common.StorageSize(size))
+	}
+}
+
+func sanityCheckSignature(v *big.Int, r *big.Int, s *big.Int, maybeProtected bool) error {
+	if isProtectedV(v) && !maybeProtected {
+		return ErrUnexpectedProtection
 	}
 
-	return &Transaction{data: d}
-}
+	var plainV byte
+	if isProtectedV(v) {
+		chainID := deriveChainId(v).Uint64()
+		plainV = byte(v.Uint64() - 35 - 2*chainID)
+	} else if maybeProtected {
+		// Only EIP-155 signatures can be optionally protected. Since
+		// we determined this v value is not protected, it must be a
+		// raw 27 or 28.
+		plainV = byte(v.Uint64() - 27)
+	} else {
+		// If the signature is not optionally protected, we assume it
+		// must already be equal to the recovery id.
+		plainV = byte(v.Uint64())
+	}
+	if !crypto.ValidateSignatureValues(plainV, r, s, false) {
+		return ErrInvalidSig
+	}
 
-// ChainId returns which chain id this transaction was signed for (if at all)
-func (tx *Transaction) ChainId() *big.Int {
-	return deriveChainId(tx.data.V)
-}
-
-// Protected returns whether the transaction is protected from replay protection.
-func (tx *Transaction) Protected() bool {
-	return isProtectedV(tx.data.V)
+	return nil
 }
 
 func isProtectedV(V *big.Int) bool {
 	if V.BitLen() <= 8 {
 		v := V.Uint64()
-		return v != 27 && v != 28
+		return v != 27 && v != 28 && v != 1 && v != 0
 	}
-	// anything not 27 or 28 are considered unprotected
+	// anything not 27 or 28 is considered protected
 	return true
 }
 
-// EncodeRLP implements rlp.Encoder
-func (tx *Transaction) EncodeRLP(w io.Writer) error {
-	return rlp.Encode(w, &tx.data)
+// Protected says whether the transaction is replay-protected.
+func (tx *Transaction) Protected() bool {
+	switch tx := tx.inner.(type) {
+	case *LegacyTx:
+		return tx.V != nil && isProtectedV(tx.V)
+	default:
+		return true
+	}
 }
 
-// DecodeRLP implements rlp.Decoder
-func (tx *Transaction) DecodeRLP(s *rlp.Stream) error {
-	_, size, _ := s.Kind()
-	err := s.Decode(&tx.data)
-	if err == nil {
-		tx.size.Store(common.StorageSize(rlp.ListSize(size)))
-	}
-
-	return err
+// Type returns the transaction type.
+func (tx *Transaction) Type() uint8 {
+	return tx.inner.txType()
 }
 
-// MarshalJSON encodes the web3 RPC transaction format.
-func (tx *Transaction) MarshalJSON() ([]byte, error) {
-	hash := tx.Hash()
-	data := tx.data
-	data.Hash = &hash
-	return data.MarshalJSON()
+// ChainId returns the EIP155 chain ID of the transaction. The return value will always be
+// non-nil. For legacy transactions which are not replay-protected, the return value is
+// zero.
+func (tx *Transaction) ChainId() *big.Int {
+	return tx.inner.chainID()
 }
 
-// UnmarshalJSON decodes the web3 RPC transaction format.
-func (tx *Transaction) UnmarshalJSON(input []byte) error {
-	var dec txdata
-	if err := dec.UnmarshalJSON(input); err != nil {
-		return err
-	}
-	var V byte
-	if isProtectedV(dec.V) {
-		chainID := deriveChainId(dec.V).Uint64()
-		V = byte(dec.V.Uint64() - 35 - 2*chainID)
-	} else {
-		V = byte(dec.V.Uint64() - 27)
-	}
-	if !crypto.ValidateSignatureValues(V, dec.R, dec.S, false) {
-		return ErrInvalidSig
-	}
-	*tx = Transaction{data: dec}
-	return nil
-}
+// Data returns the input data of the transaction.
+func (tx *Transaction) Data() []byte { return tx.inner.data() }
 
-func (tx *Transaction) Data() []byte       { return common.CopyBytes(tx.data.Payload) }
-func (tx *Transaction) Gas() uint64        { return tx.data.GasLimit }
-func (tx *Transaction) GasPrice() *big.Int { return new(big.Int).Set(tx.data.Price) }
-func (tx *Transaction) Value() *big.Int    { return new(big.Int).Set(tx.data.Amount) }
-func (tx *Transaction) Nonce() uint64      { return tx.data.AccountNonce }
-func (tx *Transaction) CheckNonce() bool   { return true }
+// AccessList returns the access list of the transaction.
+func (tx *Transaction) AccessList() AccessList { return tx.inner.accessList() }
+
+// Gas returns the gas limit of the transaction.
+func (tx *Transaction) Gas() uint64 { return tx.inner.gas() }
+
+// GasPrice returns the gas price of the transaction.
+func (tx *Transaction) GasPrice() *big.Int { return new(big.Int).Set(tx.inner.gasPrice()) }
+
+// Value returns the ether amount of the transaction.
+func (tx *Transaction) Value() *big.Int { return new(big.Int).Set(tx.inner.value()) }
+
+// Nonce returns the sender account nonce of the transaction.
+func (tx *Transaction) Nonce() uint64 { return tx.inner.nonce() }
 
 // To returns the recipient address of the transaction.
-// It returns nil if the transaction is a contract creation.
+// For contract-creation transactions, To returns nil.
 func (tx *Transaction) To() *common.Address {
-	if tx.data.Recipient == nil {
+	// Copy the pointed-to address.
+	ito := tx.inner.to()
+	if ito == nil {
 		return nil
 	}
-	to := *tx.data.Recipient
-	return &to
+	cpy := *ito
+	return &cpy
 }
 
 func (tx *Transaction) From() *common.Address {
-	if tx.data.V != nil {
-		signer := deriveSigner(tx.data.V)
-		if f, err := Sender(signer, tx); err != nil {
-			return nil
-		} else {
-			return &f
-		}
+	var signer Signer
+	if tx.Protected() {
+		signer = LatestSignerForChainID(tx.ChainId())
 	} else {
+		signer = HomesteadSigner{}
+	}
+	from, err := Sender(signer, tx)
+	if err != nil {
 		return nil
 	}
+	return &from
 }
 
-// Hash hashes the RLP encoding of tx.
-// It uniquely identifies the transaction.
+// RawSignatureValues returns the V, R, S signature values of the transaction.
+// The return values should not be modified by the caller.
+func (tx *Transaction) RawSignatureValues() (v, r, s *big.Int) {
+	return tx.inner.rawSignatureValues()
+}
+
+// GasPriceCmp compares the gas prices of two transactions.
+func (tx *Transaction) GasPriceCmp(other *Transaction) int {
+	return tx.inner.gasPrice().Cmp(other.inner.gasPrice())
+}
+
+// GasPriceIntCmp compares the gas price of the transaction against the given price.
+func (tx *Transaction) GasPriceIntCmp(other *big.Int) int {
+	return tx.inner.gasPrice().Cmp(other)
+}
+
+// Hash returns the transaction hash.
 func (tx *Transaction) Hash() common.Hash {
 	if hash := tx.hash.Load(); hash != nil {
 		return hash.(common.Hash)
 	}
-	v := rlpHash(tx)
-	tx.hash.Store(v)
-	return v
-}
 
-func (tx *Transaction) CacheHash() {
-	v := rlpHash(tx)
-	tx.hash.Store(v)
+	var h common.Hash
+	if tx.Type() == LegacyTxType {
+		h = rlpHash(tx.inner)
+	} else {
+		h = prefixedRlpHash(tx.Type(), tx.inner)
+	}
+	tx.hash.Store(h)
+	return h
 }
 
 // Size returns the true RLP encoded storage size of the transaction, either by
-// encoding and returning it, or returning a previsouly cached value.
+// encoding and returning it, or returning a previously cached value.
 func (tx *Transaction) Size() common.StorageSize {
 	if size := tx.size.Load(); size != nil {
 		return size.(common.StorageSize)
 	}
 	c := writeCounter(0)
-	rlp.Encode(&c, &tx.data)
+	rlp.Encode(&c, &tx.inner)
 	tx.size.Store(common.StorageSize(c))
 	return common.StorageSize(c)
 }
 
 // AsMessage returns the transaction as a core.Message.
-//
-// AsMessage requires a signer to derive the sender.
-//
-// XXX Rename message to something less arbitrary?
 func (tx *Transaction) AsMessage(s Signer, balanceFee *big.Int, number *big.Int) (Message, error) {
 	msg := Message{
-		nonce:           tx.data.AccountNonce,
-		gasLimit:        tx.data.GasLimit,
-		gasPrice:        new(big.Int).Set(tx.data.Price),
-		to:              tx.data.Recipient,
-		amount:          tx.data.Amount,
-		data:            tx.data.Payload,
+		nonce:           tx.Nonce(),
+		gasLimit:        tx.Gas(),
+		gasPrice:        new(big.Int).Set(tx.GasPrice()),
+		to:              tx.To(),
+		amount:          tx.Value(),
+		data:            tx.Data(),
+		accessList:      tx.AccessList(),
 		checkNonce:      true,
 		balanceTokenFee: balanceFee,
 	}
+
 	var err error
 	msg.from, err = Sender(s, tx)
 	if balanceFee != nil {
@@ -274,35 +380,31 @@ func (tx *Transaction) AsMessage(s Signer, balanceFee *big.Int, number *big.Int)
 }
 
 // WithSignature returns a new transaction with the given signature.
-// This signature needs to be formatted as described in the yellow paper (v+27).
+// This signature needs to be in the [R || S || V] format where V is 0 or 1.
 func (tx *Transaction) WithSignature(signer Signer, sig []byte) (*Transaction, error) {
 	r, s, v, err := signer.SignatureValues(tx, sig)
 	if err != nil {
 		return nil, err
 	}
-	cpy := &Transaction{data: tx.data}
-	cpy.data.R, cpy.data.S, cpy.data.V = r, s, v
-	return cpy, nil
+	cpy := tx.inner.copy()
+	cpy.setSignatureValues(signer.ChainID(), v, r, s)
+	return &Transaction{inner: cpy, time: tx.time}, nil
 }
 
-// Cost returns amount + gasprice * gaslimit.
+// Cost returns gas * gasPrice + value.
 func (tx *Transaction) Cost() *big.Int {
-	total := new(big.Int).Mul(tx.data.Price, new(big.Int).SetUint64(tx.data.GasLimit))
-	total.Add(total, tx.data.Amount)
+	total := new(big.Int).Mul(tx.GasPrice(), new(big.Int).SetUint64(tx.Gas()))
+	total.Add(total, tx.Value())
 	return total
 }
 
-// Cost returns amount + gasprice * gaslimit.
+// TxCost returns gas * gasPrice + value.
 func (tx *Transaction) TxCost(number *big.Int) *big.Int {
-	total := new(big.Int).Mul(common.GetGasPrice(number), new(big.Int).SetUint64(tx.data.GasLimit))
-	total.Add(total, tx.data.Amount)
+	total := new(big.Int).Mul(common.GetGasPrice(number), new(big.Int).SetUint64(tx.Gas()))
+	total.Add(total, tx.Value())
 	return total
 }
 
-func (tx *Transaction) RawSignatureValues() (*big.Int, *big.Int, *big.Int) {
-	return tx.data.V, tx.data.R, tx.data.S
-}
-
 func (tx *Transaction) IsSpecialTransaction() bool {
 	if tx.To() == nil {
 		return false
@@ -473,25 +575,24 @@ func (tx *Transaction) IsXDCZApplyTransaction() bool {
 
 func (tx *Transaction) String() string {
 	var from, to string
-	if tx.data.V != nil {
-		// make a best guess about the signer and use that to derive
-		// the sender.
-		signer := deriveSigner(tx.data.V)
-		if f, err := Sender(signer, tx); err != nil { // derive but don't cache
-			from = "[invalid sender: invalid sig]"
-		} else {
-			from = fmt.Sprintf("%x", f[:])
-		}
+
+	sender := tx.From()
+	if sender != nil {
+		from = fmt.Sprintf("%x", sender[:])
 	} else {
-		from = "[invalid sender: nil V field]"
+		from = "[invalid sender]"
 	}
 
-	if tx.data.Recipient == nil {
+	receiver := tx.To()
+	if receiver == nil {
 		to = "[contract creation]"
 	} else {
-		to = fmt.Sprintf("%x", tx.data.Recipient[:])
+		to = fmt.Sprintf("%x", receiver[:])
 	}
-	enc, _ := rlp.EncodeToBytes(&tx.data)
+
+	enc, _ := rlp.EncodeToBytes(tx.Data())
+	v, r, s := tx.RawSignatureValues()
+
 	return fmt.Sprintf(`
 	TX(%x)
 	Contract: %v
@@ -508,17 +609,17 @@ func (tx *Transaction) String() string {
 	Hex:      %x
 `,
 		tx.Hash(),
-		tx.data.Recipient == nil,
+		receiver == nil,
 		from,
 		to,
-		tx.data.AccountNonce,
-		tx.data.Price,
-		tx.data.GasLimit,
-		tx.data.Amount,
-		tx.data.Payload,
-		tx.data.V,
-		tx.data.R,
-		tx.data.S,
+		tx.Nonce(),
+		tx.GasPrice(),
+		tx.Gas(),
+		tx.Value(),
+		tx.Data(),
+		v,
+		r,
+		s,
 		enc,
 	)
 }
@@ -562,40 +663,47 @@ func TxDifference(a, b Transactions) (keep Transactions) {
 type TxByNonce Transactions
 
 func (s TxByNonce) Len() int           { return len(s) }
-func (s TxByNonce) Less(i, j int) bool { return s[i].data.AccountNonce < s[j].data.AccountNonce }
+func (s TxByNonce) Less(i, j int) bool { return s[i].Nonce() < s[j].Nonce() }
 func (s TxByNonce) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
 
-// TxByPrice implements both the sort and the heap interface, making it useful
+// TxByPriceAndTime implements both the sort and the heap interface, making it useful
 // for all at once sorting as well as individually adding and removing elements.
-type TxByPrice struct {
+type TxByPriceAndTime struct {
 	txs        Transactions
 	payersSwap map[common.Address]*big.Int
 }
 
-func (s TxByPrice) Len() int { return len(s.txs) }
-func (s TxByPrice) Less(i, j int) bool {
-	i_price := s.txs[i].data.Price
+func (s TxByPriceAndTime) Len() int { return len(s.txs) }
+func (s TxByPriceAndTime) Less(i, j int) bool {
+	i_price := s.txs[i].GasPrice()
 	if s.txs[i].To() != nil {
 		if _, ok := s.payersSwap[*s.txs[i].To()]; ok {
 			i_price = common.TRC21GasPrice
 		}
 	}
 
-	j_price := s.txs[j].data.Price
+	j_price := s.txs[j].GasPrice()
 	if s.txs[j].To() != nil {
 		if _, ok := s.payersSwap[*s.txs[j].To()]; ok {
 			j_price = common.TRC21GasPrice
 		}
 	}
-	return i_price.Cmp(j_price) > 0
-}
-func (s TxByPrice) Swap(i, j int) { s.txs[i], s.txs[j] = s.txs[j], s.txs[i] }
 
-func (s *TxByPrice) Push(x interface{}) {
+	// If the prices are equal, use the time the transaction was first seen for
+	// deterministic sorting
+	cmp := i_price.Cmp(j_price)
+	if cmp == 0 {
+		return s.txs[i].time.Before(s.txs[j].time)
+	}
+	return cmp > 0
+}
+func (s TxByPriceAndTime) Swap(i, j int) { s.txs[i], s.txs[j] = s.txs[j], s.txs[i] }
+
+func (s *TxByPriceAndTime) Push(x interface{}) {
 	s.txs = append(s.txs, x.(*Transaction))
 }
 
-func (s *TxByPrice) Pop() interface{} {
+func (s *TxByPriceAndTime) Pop() interface{} {
 	old := s.txs
 	n := len(old)
 	x := old[n-1]
@@ -608,7 +716,7 @@ func (s *TxByPrice) Pop() interface{} {
 // entire batches of transactions for non-executable accounts.
 type TransactionsByPriceAndNonce struct {
 	txs    map[common.Address]Transactions // Per account nonce-sorted list of transactions
-	heads  TxByPrice                       // Next transaction for each unique account (price heap)
+	heads  TxByPriceAndTime                // Next transaction for each unique account (price heap)
 	signer Signer                          // Signer for the set of transactions
 }
 
@@ -617,11 +725,11 @@ type TransactionsByPriceAndNonce struct {
 //
 // Note, the input map is reowned so the caller should not interact any more with
 // if after providing it to the constructor.
-
+//
 // It also classifies special txs and normal txs
 func NewTransactionsByPriceAndNonce(signer Signer, txs map[common.Address]Transactions, signers map[common.Address]struct{}, payersSwap map[common.Address]*big.Int) (*TransactionsByPriceAndNonce, Transactions) {
-	// Initialize a price based heap with the head transactions
-	heads := TxByPrice{}
+	// Initialize a price and received time based heap with the head transactions
+	heads := TxByPriceAndTime{}
 	heads.payersSwap = payersSwap
 	specialTxs := Transactions{}
 	for _, accTxs := range txs {
@@ -698,11 +806,12 @@ type Message struct {
 	gasLimit        uint64
 	gasPrice        *big.Int
 	data            []byte
+	accessList      AccessList
 	checkNonce      bool
 	balanceTokenFee *big.Int
 }
 
-func NewMessage(from common.Address, to *common.Address, nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte, checkNonce bool, balanceTokenFee *big.Int, number *big.Int) Message {
+func NewMessage(from common.Address, to *common.Address, nonce uint64, amount *big.Int, gasLimit uint64, gasPrice *big.Int, data []byte, accessList AccessList, checkNonce bool, balanceTokenFee *big.Int, number *big.Int) Message {
 	if balanceTokenFee != nil {
 		gasPrice = common.GetGasPrice(number)
 	}
@@ -714,6 +823,7 @@ func NewMessage(from common.Address, to *common.Address, nonce uint64, amount *b
 		gasLimit:        gasLimit,
 		gasPrice:        gasPrice,
 		data:            data,
+		accessList:      accessList,
 		checkNonce:      checkNonce,
 		balanceTokenFee: balanceTokenFee,
 	}
@@ -728,5 +838,6 @@ func (m Message) Gas() uint64               { return m.gasLimit }
 func (m Message) Nonce() uint64             { return m.nonce }
 func (m Message) Data() []byte              { return m.data }
 func (m Message) CheckNonce() bool          { return m.checkNonce }
+func (m Message) AccessList() AccessList    { return m.accessList }
 
 func (m *Message) SetNonce(nonce uint64) { m.nonce = nonce }

core/types/transaction_marshalling.go

@@ -0,0 +1,187 @@
+package types
+
+import (
+	"encoding/json"
+	"errors"
+	"math/big"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
+)
+
+// txJSON is the JSON representation of transactions.
+type txJSON struct {
+	Type hexutil.Uint64 `json:"type"`
+
+	// Common transaction fields:
+	Nonce    *hexutil.Uint64 `json:"nonce"`
+	GasPrice *hexutil.Big    `json:"gasPrice"`
+	Gas      *hexutil.Uint64 `json:"gas"`
+	Value    *hexutil.Big    `json:"value"`
+	Data     *hexutil.Bytes  `json:"input"`
+	V        *hexutil.Big    `json:"v"`
+	R        *hexutil.Big    `json:"r"`
+	S        *hexutil.Big    `json:"s"`
+	To       *common.Address `json:"to"`
+
+	// Access list transaction fields:
+	ChainID    *hexutil.Big `json:"chainId,omitempty"`
+	AccessList *AccessList  `json:"accessList,omitempty"`
+
+	// Only used for encoding:
+	Hash common.Hash `json:"hash"`
+}
+
+// MarshalJSON marshals as JSON with a hash.
+func (t *Transaction) MarshalJSON() ([]byte, error) {
+	var enc txJSON
+	// These are set for all tx types.
+	enc.Hash = t.Hash()
+	enc.Type = hexutil.Uint64(t.Type())
+
+	// Other fields are set conditionally depending on tx type.
+	switch tx := t.inner.(type) {
+	case *LegacyTx:
+		enc.Nonce = (*hexutil.Uint64)(&tx.Nonce)
+		enc.Gas = (*hexutil.Uint64)(&tx.Gas)
+		enc.GasPrice = (*hexutil.Big)(tx.GasPrice)
+		enc.Value = (*hexutil.Big)(tx.Value)
+		enc.Data = (*hexutil.Bytes)(&tx.Data)
+		enc.To = t.To()
+		enc.V = (*hexutil.Big)(tx.V)
+		enc.R = (*hexutil.Big)(tx.R)
+		enc.S = (*hexutil.Big)(tx.S)
+	case *AccessListTx:
+		enc.ChainID = (*hexutil.Big)(tx.ChainID)
+		enc.AccessList = &tx.AccessList
+		enc.Nonce = (*hexutil.Uint64)(&tx.Nonce)
+		enc.Gas = (*hexutil.Uint64)(&tx.Gas)
+		enc.GasPrice = (*hexutil.Big)(tx.GasPrice)
+		enc.Value = (*hexutil.Big)(tx.Value)
+		enc.Data = (*hexutil.Bytes)(&tx.Data)
+		enc.To = t.To()
+		enc.V = (*hexutil.Big)(tx.V)
+		enc.R = (*hexutil.Big)(tx.R)
+		enc.S = (*hexutil.Big)(tx.S)
+	}
+	return json.Marshal(&enc)
+}
+
+// UnmarshalJSON unmarshals from JSON.
+func (t *Transaction) UnmarshalJSON(input []byte) error {
+	var dec txJSON
+	if err := json.Unmarshal(input, &dec); err != nil {
+		return err
+	}
+
+	// Decode / verify fields according to transaction type.
+	var inner TxData
+	switch dec.Type {
+	case LegacyTxType:
+		var itx LegacyTx
+		inner = &itx
+		if dec.To != nil {
+			itx.To = dec.To
+		}
+		if dec.Nonce == nil {
+			return errors.New("missing required field 'nonce' in transaction")
+		}
+		itx.Nonce = uint64(*dec.Nonce)
+		if dec.GasPrice == nil {
+			return errors.New("missing required field 'gasPrice' in transaction")
+		}
+		itx.GasPrice = (*big.Int)(dec.GasPrice)
+		if dec.Gas == nil {
+			return errors.New("missing required field 'gas' in transaction")
+		}
+		itx.Gas = uint64(*dec.Gas)
+		if dec.Value == nil {
+			return errors.New("missing required field 'value' in transaction")
+		}
+		itx.Value = (*big.Int)(dec.Value)
+		if dec.Data == nil {
+			return errors.New("missing required field 'input' in transaction")
+		}
+		itx.Data = *dec.Data
+		if dec.V == nil {
+			return errors.New("missing required field 'v' in transaction")
+		}
+		itx.V = (*big.Int)(dec.V)
+		if dec.R == nil {
+			return errors.New("missing required field 'r' in transaction")
+		}
+		itx.R = (*big.Int)(dec.R)
+		if dec.S == nil {
+			return errors.New("missing required field 's' in transaction")
+		}
+		itx.S = (*big.Int)(dec.S)
+		withSignature := itx.V.Sign() != 0 || itx.R.Sign() != 0 || itx.S.Sign() != 0
+		if withSignature {
+			if err := sanityCheckSignature(itx.V, itx.R, itx.S, true); err != nil {
+				return err
+			}
+		}
+
+	case AccessListTxType:
+		var itx AccessListTx
+		inner = &itx
+		// Access list is optional for now.
+		if dec.AccessList != nil {
+			itx.AccessList = *dec.AccessList
+		}
+		if dec.ChainID == nil {
+			return errors.New("missing required field 'chainId' in transaction")
+		}
+		itx.ChainID = (*big.Int)(dec.ChainID)
+		if dec.To != nil {
+			itx.To = dec.To
+		}
+		if dec.Nonce == nil {
+			return errors.New("missing required field 'nonce' in transaction")
+		}
+		itx.Nonce = uint64(*dec.Nonce)
+		if dec.GasPrice == nil {
+			return errors.New("missing required field 'gasPrice' in transaction")
+		}
+		itx.GasPrice = (*big.Int)(dec.GasPrice)
+		if dec.Gas == nil {
+			return errors.New("missing required field 'gas' in transaction")
+		}
+		itx.Gas = uint64(*dec.Gas)
+		if dec.Value == nil {
+			return errors.New("missing required field 'value' in transaction")
+		}
+		itx.Value = (*big.Int)(dec.Value)
+		if dec.Data == nil {
+			return errors.New("missing required field 'input' in transaction")
+		}
+		itx.Data = *dec.Data
+		if dec.V == nil {
+			return errors.New("missing required field 'v' in transaction")
+		}
+		itx.V = (*big.Int)(dec.V)
+		if dec.R == nil {
+			return errors.New("missing required field 'r' in transaction")
+		}
+		itx.R = (*big.Int)(dec.R)
+		if dec.S == nil {
+			return errors.New("missing required field 's' in transaction")
+		}
+		itx.S = (*big.Int)(dec.S)
+		withSignature := itx.V.Sign() != 0 || itx.R.Sign() != 0 || itx.S.Sign() != 0
+		if withSignature {
+			if err := sanityCheckSignature(itx.V, itx.R, itx.S, false); err != nil {
+				return err
+			}
+		}
+
+	default:
+		return ErrTxTypeNotSupported
+	}
+
+	// Now set the inner transaction.
+	t.setDecoded(inner, 0)
+
+	// TODO: check hash here?
+	return nil
+}

core/types/transaction_signing.go

@@ -27,9 +27,8 @@ import (
 	"github.com/XinFinOrg/XDPoSChain/params"
 )
 
-var (
-	ErrInvalidChainId = errors.New("invalid chain id for signer")
-)
+var ErrInvalidChainId = errors.New("invalid chain id for signer")
+var ErrInvalidNilTx = errors.New("invalid nil tx")
 
 // sigCache is used to cache the derived sender and contains
 // the signer used to derive it.
@@ -42,6 +41,8 @@ type sigCache struct {
 func MakeSigner(config *params.ChainConfig, blockNumber *big.Int) Signer {
 	var signer Signer
 	switch {
+	case config.IsEIP1559(blockNumber):
+		signer = NewEIP2930Signer(config.ChainId)
 	case config.IsEIP155(blockNumber):
 		signer = NewEIP155Signer(config.ChainId)
 	case config.IsHomestead(blockNumber):
@@ -52,7 +53,40 @@ func MakeSigner(config *params.ChainConfig, blockNumber *big.Int) Signer {
 	return signer
 }
 
-// SignTx signs the transaction using the given signer and private key
+// LatestSigner returns the 'most permissive' Signer available for the given chain
+// configuration. Specifically, this enables support of EIP-155 replay protection and
+// EIP-2930 access list transactions when their respective forks are scheduled to occur at
+// any block number in the chain config.
+//
+// Use this in transaction-handling code where the current block number is unknown. If you
+// have the current block number available, use MakeSigner instead.
+func LatestSigner(config *params.ChainConfig) Signer {
+	if config.ChainId != nil {
+		if common.Eip1559Block.Uint64() != 9999999999 || config.Eip1559Block != nil {
+			return NewEIP2930Signer(config.ChainId)
+		}
+		if config.EIP155Block != nil {
+			return NewEIP155Signer(config.ChainId)
+		}
+	}
+	return HomesteadSigner{}
+}
+
+// LatestSignerForChainID returns the 'most permissive' Signer available. Specifically,
+// this enables support for EIP-155 replay protection and all implemented EIP-2718
+// transaction types if chainID is non-nil.
+//
+// Use this in transaction-handling code where the current block number and fork
+// configuration are unknown. If you have a ChainConfig, use LatestSigner instead.
+// If you have a ChainConfig and know the current block number, use MakeSigner instead.
+func LatestSignerForChainID(chainID *big.Int) Signer {
+	if chainID == nil {
+		return HomesteadSigner{}
+	}
+	return NewEIP2930Signer(chainID)
+}
+
+// SignTx signs the transaction using the given signer and private key.
 func SignTx(tx *Transaction, s Signer, prv *ecdsa.PrivateKey) (*Transaction, error) {
 	h := s.Hash(tx)
 	sig, err := crypto.Sign(h[:], prv)
@@ -62,6 +96,27 @@ func SignTx(tx *Transaction, s Signer, prv *ecdsa.PrivateKey) (*Transaction, err
 	return tx.WithSignature(s, sig)
 }
 
+// SignNewTx creates a transaction and signs it.
+func SignNewTx(prv *ecdsa.PrivateKey, s Signer, txdata TxData) (*Transaction, error) {
+	tx := NewTx(txdata)
+	h := s.Hash(tx)
+	sig, err := crypto.Sign(h[:], prv)
+	if err != nil {
+		return nil, err
+	}
+	return tx.WithSignature(s, sig)
+}
+
+// MustSignNewTx creates a transaction and signs it.
+// This panics if the transaction cannot be signed.
+func MustSignNewTx(prv *ecdsa.PrivateKey, s Signer, txdata TxData) *Transaction {
+	tx, err := SignNewTx(prv, s, txdata)
+	if err != nil {
+		panic(err)
+	}
+	return tx
+}
+
 // Sender returns the address derived from the signature (V, R, S) using secp256k1
 // elliptic curve and an error if it failed deriving or upon an incorrect
 // signature.
@@ -70,6 +125,10 @@ func SignTx(tx *Transaction, s Signer, prv *ecdsa.PrivateKey) (*Transaction, err
 // signing method. The cache is invalidated if the cached signer does
 // not match the signer used in the current call.
 func Sender(signer Signer, tx *Transaction) (common.Address, error) {
+	if tx == nil {
+		return common.Address{}, ErrInvalidNilTx
+	}
+
 	if sc := tx.from.Load(); sc != nil {
 		sigCache := sc.(sigCache)
 		// If the signer used to derive from in a previous
@@ -88,21 +147,112 @@ func Sender(signer Signer, tx *Transaction) (common.Address, error) {
 	return addr, nil
 }
 
-// Signer encapsulates transaction signature handling. Note that this interface is not a
-// stable API and may change at any time to accommodate new protocol rules.
+// Signer encapsulates transaction signature handling. The name of this type is slightly
+// misleading because Signers don't actually sign, they're just for validating and
+// processing of signatures.
+//
+// Note that this interface is not a stable API and may change at any time to accommodate
+// new protocol rules.
 type Signer interface {
 	// Sender returns the sender address of the transaction.
 	Sender(tx *Transaction) (common.Address, error)
+
 	// SignatureValues returns the raw R, S, V values corresponding to the
 	// given signature.
 	SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error)
-	// Hash returns the hash to be signed.
+	ChainID() *big.Int
+
+	// Hash returns 'signature hash', i.e. the transaction hash that is signed by the
+	// private key. This hash does not uniquely identify the transaction.
 	Hash(tx *Transaction) common.Hash
+
 	// Equal returns true if the given signer is the same as the receiver.
 	Equal(Signer) bool
 }
 
-// EIP155Transaction implements Signer using the EIP155 rules.
+type eip2930Signer struct{ EIP155Signer }
+
+// NewEIP2930Signer returns a signer that accepts EIP-2930 access list transactions,
+// EIP-155 replay protected transactions, and legacy Homestead transactions.
+func NewEIP2930Signer(chainId *big.Int) Signer {
+	return eip2930Signer{NewEIP155Signer(chainId)}
+}
+
+func (s eip2930Signer) ChainID() *big.Int {
+	return s.chainId
+}
+
+func (s eip2930Signer) Equal(s2 Signer) bool {
+	x, ok := s2.(eip2930Signer)
+	return ok && x.chainId.Cmp(s.chainId) == 0
+}
+
+func (s eip2930Signer) Sender(tx *Transaction) (common.Address, error) {
+	V, R, S := tx.RawSignatureValues()
+	switch tx.Type() {
+	case LegacyTxType:
+		return s.EIP155Signer.Sender(tx)
+	case AccessListTxType:
+		// ACL txs are defined to use 0 and 1 as their recovery id, add
+		// 27 to become equivalent to unprotected Homestead signatures.
+		V = new(big.Int).Add(V, big.NewInt(27))
+	default:
+		return common.Address{}, ErrTxTypeNotSupported
+	}
+	if tx.ChainId().Cmp(s.chainId) != 0 {
+		return common.Address{}, ErrInvalidChainId
+	}
+	return recoverPlain(s.Hash(tx), R, S, V, true)
+}
+
+func (s eip2930Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big.Int, err error) {
+	switch txdata := tx.inner.(type) {
+	case *LegacyTx:
+		return s.EIP155Signer.SignatureValues(tx, sig)
+	case *AccessListTx:
+		// Check that chain ID of tx matches the signer. We also accept ID zero here,
+		// because it indicates that the chain ID was not specified in the tx.
+		if txdata.ChainID.Sign() != 0 && txdata.ChainID.Cmp(s.chainId) != 0 {
+			return nil, nil, nil, ErrInvalidChainId
+		}
+		R, S, _ = decodeSignature(sig)
+		V = big.NewInt(int64(sig[64]))
+	default:
+		return nil, nil, nil, ErrTxTypeNotSupported
+	}
+	return R, S, V, nil
+}
+
+// Hash returns the hash to be signed by the sender.
+// It does not uniquely identify the transaction.
+func (s eip2930Signer) Hash(tx *Transaction) common.Hash {
+	switch tx.Type() {
+	case LegacyTxType:
+		return s.EIP155Signer.Hash(tx)
+	case AccessListTxType:
+		return prefixedRlpHash(
+			tx.Type(),
+			[]interface{}{
+				s.chainId,
+				tx.Nonce(),
+				tx.GasPrice(),
+				tx.Gas(),
+				tx.To(),
+				tx.Value(),
+				tx.Data(),
+				tx.AccessList(),
+			})
+	default:
+		// This _should_ not happen, but in case someone sends in a bad
+		// json struct via RPC, it's probably more prudent to return an
+		// empty hash instead of killing the node with a panic
+		//panic("Unsupported transaction type: %d", tx.typ)
+		return common.Hash{}
+	}
+}
+
+// EIP155Signer implements Signer using the EIP-155 rules. This accepts transactions which
+// are replay-protected as well as unprotected homestead transactions.
 type EIP155Signer struct {
 	chainId, chainIdMul *big.Int
 }
@@ -117,6 +267,10 @@ func NewEIP155Signer(chainId *big.Int) EIP155Signer {
 	}
 }
 
+func (s EIP155Signer) ChainID() *big.Int {
+	return s.chainId
+}
+
 func (s EIP155Signer) Equal(s2 Signer) bool {
 	eip155, ok := s2.(EIP155Signer)
 	return ok && eip155.chainId.Cmp(s.chainId) == 0
@@ -125,24 +279,28 @@ func (s EIP155Signer) Equal(s2 Signer) bool {
 var big8 = big.NewInt(8)
 
 func (s EIP155Signer) Sender(tx *Transaction) (common.Address, error) {
+	if tx.Type() != LegacyTxType {
+		return common.Address{}, ErrTxTypeNotSupported
+	}
 	if !tx.Protected() {
 		return HomesteadSigner{}.Sender(tx)
 	}
 	if tx.ChainId().Cmp(s.chainId) != 0 {
 		return common.Address{}, ErrInvalidChainId
 	}
-	V := new(big.Int).Sub(tx.data.V, s.chainIdMul)
+	V, R, S := tx.RawSignatureValues()
+	V = new(big.Int).Sub(V, s.chainIdMul)
 	V.Sub(V, big8)
-	return recoverPlain(s.Hash(tx), tx.data.R, tx.data.S, V, true)
+	return recoverPlain(s.Hash(tx), R, S, V, true)
 }
 
-// WithSignature returns a new transaction with the given signature. This signature
+// SignatureValues returns signature values. This signature
 // needs to be in the [R || S || V] format where V is 0 or 1.
 func (s EIP155Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big.Int, err error) {
-	R, S, V, err = HomesteadSigner{}.SignatureValues(tx, sig)
-	if err != nil {
-		return nil, nil, nil, err
+	if tx.Type() != LegacyTxType {
+		return nil, nil, nil, ErrTxTypeNotSupported
 	}
+	R, S, V = decodeSignature(sig)
 	if s.chainId.Sign() != 0 {
 		V = big.NewInt(int64(sig[64] + 35))
 		V.Add(V, s.chainIdMul)
@@ -154,12 +312,12 @@ func (s EIP155Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big
 // It does not uniquely identify the transaction.
 func (s EIP155Signer) Hash(tx *Transaction) common.Hash {
 	return rlpHash([]interface{}{
-		tx.data.AccountNonce,
-		tx.data.Price,
-		tx.data.GasLimit,
-		tx.data.Recipient,
-		tx.data.Amount,
-		tx.data.Payload,
+		tx.Nonce(),
+		tx.GasPrice(),
+		tx.Gas(),
+		tx.To(),
+		tx.Value(),
+		tx.Data(),
 		s.chainId, uint(0), uint(0),
 	})
 }
@@ -168,6 +326,10 @@ func (s EIP155Signer) Hash(tx *Transaction) common.Hash {
 // homestead rules.
 type HomesteadSigner struct{ FrontierSigner }
 
+func (s HomesteadSigner) ChainID() *big.Int {
+	return nil
+}
+
 func (s HomesteadSigner) Equal(s2 Signer) bool {
 	_, ok := s2.(HomesteadSigner)
 	return ok
@@ -180,25 +342,39 @@ func (hs HomesteadSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v
 }
 
 func (hs HomesteadSigner) Sender(tx *Transaction) (common.Address, error) {
-	return recoverPlain(hs.Hash(tx), tx.data.R, tx.data.S, tx.data.V, true)
+	if tx.Type() != LegacyTxType {
+		return common.Address{}, ErrTxTypeNotSupported
+	}
+	v, r, s := tx.RawSignatureValues()
+	return recoverPlain(hs.Hash(tx), r, s, v, true)
 }
 
 type FrontierSigner struct{}
 
+func (s FrontierSigner) ChainID() *big.Int {
+	return nil
+}
+
 func (s FrontierSigner) Equal(s2 Signer) bool {
 	_, ok := s2.(FrontierSigner)
 	return ok
 }
 
+func (fs FrontierSigner) Sender(tx *Transaction) (common.Address, error) {
+	if tx.Type() != LegacyTxType {
+		return common.Address{}, ErrTxTypeNotSupported
+	}
+	v, r, s := tx.RawSignatureValues()
+	return recoverPlain(fs.Hash(tx), r, s, v, false)
+}
+
 // SignatureValues returns signature values. This signature
 // needs to be in the [R || S || V] format where V is 0 or 1.
 func (fs FrontierSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) {
-	if len(sig) != 65 {
-		panic(fmt.Sprintf("wrong size for signature: got %d, want 65", len(sig)))
+	if tx.Type() != LegacyTxType {
+		return nil, nil, nil, ErrTxTypeNotSupported
 	}
-	r = new(big.Int).SetBytes(sig[:32])
-	s = new(big.Int).SetBytes(sig[32:64])
-	v = new(big.Int).SetBytes([]byte{sig[64] + 27})
+	r, s, v = decodeSignature(sig)
 	return r, s, v, nil
 }
 
@@ -206,17 +382,23 @@ func (fs FrontierSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *
 // It does not uniquely identify the transaction.
 func (fs FrontierSigner) Hash(tx *Transaction) common.Hash {
 	return rlpHash([]interface{}{
-		tx.data.AccountNonce,
-		tx.data.Price,
-		tx.data.GasLimit,
-		tx.data.Recipient,
-		tx.data.Amount,
-		tx.data.Payload,
+		tx.Nonce(),
+		tx.GasPrice(),
+		tx.Gas(),
+		tx.To(),
+		tx.Value(),
+		tx.Data(),
 	})
 }
 
-func (fs FrontierSigner) Sender(tx *Transaction) (common.Address, error) {
-	return recoverPlain(fs.Hash(tx), tx.data.R, tx.data.S, tx.data.V, false)
+func decodeSignature(sig []byte) (r, s, v *big.Int) {
+	if len(sig) != crypto.SignatureLength {
+		panic(fmt.Sprintf("wrong size for signature: got %d, want %d", len(sig), crypto.SignatureLength))
+	}
+	r = new(big.Int).SetBytes(sig[:32])
+	s = new(big.Int).SetBytes(sig[32:64])
+	v = new(big.Int).SetBytes([]byte{sig[64] + 27})
+	return r, s, v
 }
 
 func recoverPlain(sighash common.Hash, R, S, Vb *big.Int, homestead bool) (common.Address, error) {

core/types/transaction_test.go

@@ -20,8 +20,12 @@ import (
 	"bytes"
 	"crypto/ecdsa"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"math/big"
+	"reflect"
 	"testing"
+	"time"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/crypto"
@@ -31,6 +35,8 @@ import (
 // The values in those tests are from the Transaction Tests
 // at github.com/ethereum/tests.
 var (
+	testAddr = common.HexToAddress("b94f5374fce5edbc8e2a8697c15331677e6ebf0b")
+
 	emptyTx = NewTransaction(
 		0,
 		common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"),
@@ -40,7 +46,7 @@ var (
 
 	rightvrsTx, _ = NewTransaction(
 		3,
-		common.HexToAddress("b94f5374fce5edbc8e2a8697c15331677e6ebf0b"),
+		testAddr,
 		big.NewInt(10),
 		2000,
 		big.NewInt(1),
@@ -49,8 +55,32 @@ var (
 		HomesteadSigner{},
 		common.Hex2Bytes("98ff921201554726367d2be8c804a7ff89ccf285ebc57dff8ae4c44b9c19ac4a8887321be575c8095f789dd4c743dfe42c1820f9231f98a962b210e3ac2452a301"),
 	)
+
+	emptyEip2718Tx = NewTx(&AccessListTx{
+		ChainID:  big.NewInt(1),
+		Nonce:    3,
+		To:       &testAddr,
+		Value:    big.NewInt(10),
+		Gas:      25000,
+		GasPrice: big.NewInt(1),
+		Data:     common.FromHex("5544"),
+	})
+
+	signedEip2718Tx, _ = emptyEip2718Tx.WithSignature(
+		NewEIP2930Signer(big.NewInt(1)),
+		common.Hex2Bytes("c9519f4f2b30335884581971573fadf60c6204f59a911df35ee8a540456b266032f1e8e2c5dd761f9e4f88f41c8310aeaba26a8bfcdacfedfa12ec3862d3752101"),
+	)
 )
 
+func TestDecodeEmptyTypedTx(t *testing.T) {
+	input := []byte{0x80}
+	var tx Transaction
+	err := rlp.DecodeBytes(input, &tx)
+	if err != errEmptyTypedTx {
+		t.Fatal("wrong error:", err)
+	}
+}
+
 func TestTransactionSigHash(t *testing.T) {
 	var homestead HomesteadSigner
 	if homestead.Hash(emptyTx) != common.HexToHash("c775b99e7ad12f50d819fcd602390467e28141316969f4b57f0626f74fe3b386") {
@@ -72,6 +102,117 @@ func TestTransactionEncode(t *testing.T) {
 	}
 }
 
+func TestEIP2718TransactionSigHash(t *testing.T) {
+	s := NewEIP2930Signer(big.NewInt(1))
+	if s.Hash(emptyEip2718Tx) != common.HexToHash("49b486f0ec0a60dfbbca2d30cb07c9e8ffb2a2ff41f29a1ab6737475f6ff69f3") {
+		t.Errorf("empty EIP-2718 transaction hash mismatch, got %x", s.Hash(emptyEip2718Tx))
+	}
+	if s.Hash(signedEip2718Tx) != common.HexToHash("49b486f0ec0a60dfbbca2d30cb07c9e8ffb2a2ff41f29a1ab6737475f6ff69f3") {
+		t.Errorf("signed EIP-2718 transaction hash mismatch, got %x", s.Hash(signedEip2718Tx))
+	}
+}
+
+// This test checks signature operations on access list transactions.
+func TestEIP2930Signer(t *testing.T) {
+	var (
+		key, _  = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+		keyAddr = crypto.PubkeyToAddress(key.PublicKey)
+		signer1 = NewEIP2930Signer(big.NewInt(1))
+		signer2 = NewEIP2930Signer(big.NewInt(2))
+		tx0     = NewTx(&AccessListTx{Nonce: 1})
+		tx1     = NewTx(&AccessListTx{ChainID: big.NewInt(1), Nonce: 1})
+		tx2, _  = SignNewTx(key, signer2, &AccessListTx{ChainID: big.NewInt(2), Nonce: 1})
+	)
+
+	tests := []struct {
+		tx             *Transaction
+		signer         Signer
+		wantSignerHash common.Hash
+		wantSenderErr  error
+		wantSignErr    error
+		wantHash       common.Hash // after signing
+	}{
+		{
+			tx:             tx0,
+			signer:         signer1,
+			wantSignerHash: common.HexToHash("846ad7672f2a3a40c1f959cd4a8ad21786d620077084d84c8d7c077714caa139"),
+			wantSenderErr:  ErrInvalidChainId,
+			wantHash:       common.HexToHash("1ccd12d8bbdb96ea391af49a35ab641e219b2dd638dea375f2bc94dd290f2549"),
+		},
+		{
+			tx:             tx1,
+			signer:         signer1,
+			wantSenderErr:  ErrInvalidSig,
+			wantSignerHash: common.HexToHash("846ad7672f2a3a40c1f959cd4a8ad21786d620077084d84c8d7c077714caa139"),
+			wantHash:       common.HexToHash("1ccd12d8bbdb96ea391af49a35ab641e219b2dd638dea375f2bc94dd290f2549"),
+		},
+		{
+			// This checks what happens when trying to sign an unsigned tx for the wrong chain.
+			tx:             tx1,
+			signer:         signer2,
+			wantSenderErr:  ErrInvalidChainId,
+			wantSignerHash: common.HexToHash("367967247499343401261d718ed5aa4c9486583e4d89251afce47f4a33c33362"),
+			wantSignErr:    ErrInvalidChainId,
+		},
+		{
+			// This checks what happens when trying to re-sign a signed tx for the wrong chain.
+			tx:             tx2,
+			signer:         signer1,
+			wantSenderErr:  ErrInvalidChainId,
+			wantSignerHash: common.HexToHash("846ad7672f2a3a40c1f959cd4a8ad21786d620077084d84c8d7c077714caa139"),
+			wantSignErr:    ErrInvalidChainId,
+		},
+	}
+
+	for i, test := range tests {
+		sigHash := test.signer.Hash(test.tx)
+		if sigHash != test.wantSignerHash {
+			t.Errorf("test %d: wrong sig hash: got %x, want %x", i, sigHash, test.wantSignerHash)
+		}
+		sender, err := Sender(test.signer, test.tx)
+		if !errors.Is(err, test.wantSenderErr) {
+			t.Errorf("test %d: wrong Sender error %q", i, err)
+		}
+		if err == nil && sender != keyAddr {
+			t.Errorf("test %d: wrong sender address %x", i, sender)
+		}
+		signedTx, err := SignTx(test.tx, test.signer, key)
+		if !errors.Is(err, test.wantSignErr) {
+			t.Fatalf("test %d: wrong SignTx error %q", i, err)
+		}
+		if signedTx != nil {
+			if signedTx.Hash() != test.wantHash {
+				t.Errorf("test %d: wrong tx hash after signing: got %x, want %x", i, signedTx.Hash(), test.wantHash)
+			}
+		}
+	}
+}
+
+func TestEIP2718TransactionEncode(t *testing.T) {
+	// RLP representation
+	{
+		have, err := rlp.EncodeToBytes(signedEip2718Tx)
+		if err != nil {
+			t.Fatalf("encode error: %v", err)
+		}
+		want := common.FromHex("b86601f8630103018261a894b94f5374fce5edbc8e2a8697c15331677e6ebf0b0a825544c001a0c9519f4f2b30335884581971573fadf60c6204f59a911df35ee8a540456b2660a032f1e8e2c5dd761f9e4f88f41c8310aeaba26a8bfcdacfedfa12ec3862d37521")
+		if !bytes.Equal(have, want) {
+			t.Errorf("encoded RLP mismatch, got %x", have)
+		}
+	}
+	// Binary representation
+	{
+		have, err := signedEip2718Tx.MarshalBinary()
+		if err != nil {
+			t.Fatalf("encode error: %v", err)
+		}
+		want := common.FromHex("01f8630103018261a894b94f5374fce5edbc8e2a8697c15331677e6ebf0b0a825544c001a0c9519f4f2b30335884581971573fadf60c6204f59a911df35ee8a540456b2660a032f1e8e2c5dd761f9e4f88f41c8310aeaba26a8bfcdacfedfa12ec3862d37521")
+		if !bytes.Equal(have, want) {
+			t.Errorf("encoded RLP mismatch, got %x", have)
+		}
+	}
+}
+
 func decodeTx(data []byte) (*Transaction, error) {
 	var tx Transaction
 	t, err := &tx, rlp.Decode(bytes.NewReader(data), &tx)
@@ -233,3 +374,174 @@ func TestTransactionJSON(t *testing.T) {
 		}
 	}
 }
+
+// Tests that if multiple transactions have the same price, the ones seen earlier
+// are prioritized to avoid network spam attacks aiming for a specific ordering.
+func TestTransactionTimeSort(t *testing.T) {
+	// Generate a batch of accounts to start with
+	keys := make([]*ecdsa.PrivateKey, 5)
+	for i := 0; i < len(keys); i++ {
+		keys[i], _ = crypto.GenerateKey()
+	}
+	signer := HomesteadSigner{}
+
+	// Generate a batch of transactions with overlapping prices, but different creation times
+	groups := map[common.Address]Transactions{}
+	for start, key := range keys {
+		addr := crypto.PubkeyToAddress(key.PublicKey)
+
+		tx, _ := SignTx(NewTransaction(0, common.Address{}, big.NewInt(100), 100, big.NewInt(1), nil), signer, key)
+		tx.time = time.Unix(0, int64(len(keys)-start))
+
+		groups[addr] = append(groups[addr], tx)
+	}
+	// Sort the transactions and cross check the nonce ordering
+	txset, _ := NewTransactionsByPriceAndNonce(signer, groups, nil, map[common.Address]*big.Int{})
+
+	txs := Transactions{}
+	for tx := txset.Peek(); tx != nil; tx = txset.Peek() {
+		txs = append(txs, tx)
+		txset.Shift()
+	}
+	if len(txs) != len(keys) {
+		t.Errorf("expected %d transactions, found %d", len(keys), len(txs))
+	}
+	for i, txi := range txs {
+		fromi, _ := Sender(signer, txi)
+		if i+1 < len(txs) {
+			next := txs[i+1]
+			fromNext, _ := Sender(signer, next)
+
+			if txi.GasPrice().Cmp(next.GasPrice()) < 0 {
+				t.Errorf("invalid gasprice ordering: tx #%d (A=%x P=%v) < tx #%d (A=%x P=%v)", i, fromi[:4], txi.GasPrice(), i+1, fromNext[:4], next.GasPrice())
+			}
+			// Make sure time order is ascending if the txs have the same gas price
+			if txi.GasPrice().Cmp(next.GasPrice()) == 0 && txi.time.After(next.time) {
+				t.Errorf("invalid received time ordering: tx #%d (A=%x T=%v) > tx #%d (A=%x T=%v)", i, fromi[:4], txi.time, i+1, fromNext[:4], next.time)
+			}
+		}
+	}
+}
+
+// TestTransactionCoding tests serializing/de-serializing to/from rlp and JSON.
+func TestTransactionCoding(t *testing.T) {
+	key, err := crypto.GenerateKey()
+	if err != nil {
+		t.Fatalf("could not generate key: %v", err)
+	}
+	var (
+		signer    = NewEIP2930Signer(common.Big1)
+		addr      = common.HexToAddress("0x0000000000000000000000000000000000000001")
+		recipient = common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87")
+		accesses  = AccessList{{Address: addr, StorageKeys: []common.Hash{{0}}}}
+	)
+	for i := uint64(0); i < 500; i++ {
+		var txdata TxData
+		switch i % 5 {
+		case 0:
+			// Legacy tx.
+			txdata = &LegacyTx{
+				Nonce:    i,
+				To:       &recipient,
+				Gas:      1,
+				GasPrice: big.NewInt(2),
+				Data:     []byte("abcdef"),
+			}
+		case 1:
+			// Legacy tx contract creation.
+			txdata = &LegacyTx{
+				Nonce:    i,
+				Gas:      1,
+				GasPrice: big.NewInt(2),
+				Data:     []byte("abcdef"),
+			}
+		case 2:
+			// Tx with non-zero access list.
+			txdata = &AccessListTx{
+				ChainID:    big.NewInt(1),
+				Nonce:      i,
+				To:         &recipient,
+				Gas:        123457,
+				GasPrice:   big.NewInt(10),
+				AccessList: accesses,
+				Data:       []byte("abcdef"),
+			}
+		case 3:
+			// Tx with empty access list.
+			txdata = &AccessListTx{
+				ChainID:  big.NewInt(1),
+				Nonce:    i,
+				To:       &recipient,
+				Gas:      123457,
+				GasPrice: big.NewInt(10),
+				Data:     []byte("abcdef"),
+			}
+		case 4:
+			// Contract creation with access list.
+			txdata = &AccessListTx{
+				ChainID:    big.NewInt(1),
+				Nonce:      i,
+				Gas:        123457,
+				GasPrice:   big.NewInt(10),
+				AccessList: accesses,
+			}
+		}
+		tx, err := SignNewTx(key, signer, txdata)
+		if err != nil {
+			t.Fatalf("could not sign transaction: %v", err)
+		}
+		// RLP
+		parsedTx, err := encodeDecodeBinary(tx)
+		if err != nil {
+			t.Fatal(err)
+		}
+		assertEqual(parsedTx, tx)
+
+		// JSON
+		parsedTx, err = encodeDecodeJSON(tx)
+		if err != nil {
+			t.Fatal(err)
+		}
+		assertEqual(parsedTx, tx)
+	}
+}
+
+func encodeDecodeJSON(tx *Transaction) (*Transaction, error) {
+	data, err := json.Marshal(tx)
+	if err != nil {
+		return nil, fmt.Errorf("json encoding failed: %v", err)
+	}
+	var parsedTx = &Transaction{}
+	if err := json.Unmarshal(data, &parsedTx); err != nil {
+		return nil, fmt.Errorf("json decoding failed: %v", err)
+	}
+	return parsedTx, nil
+}
+
+func encodeDecodeBinary(tx *Transaction) (*Transaction, error) {
+	data, err := tx.MarshalBinary()
+	if err != nil {
+		return nil, fmt.Errorf("rlp encoding failed: %v", err)
+	}
+	var parsedTx = &Transaction{}
+	if err := parsedTx.UnmarshalBinary(data); err != nil {
+		return nil, fmt.Errorf("rlp decoding failed: %v", err)
+	}
+	return parsedTx, nil
+}
+
+func assertEqual(orig *Transaction, cpy *Transaction) error {
+	// compare nonce, price, gaslimit, recipient, amount, payload, V, R, S
+	if want, got := orig.Hash(), cpy.Hash(); want != got {
+		return fmt.Errorf("parsed tx differs from original tx, want %v, got %v", want, got)
+	}
+	if want, got := orig.ChainId(), cpy.ChainId(); want.Cmp(got) != 0 {
+		return fmt.Errorf("invalid chain id, want %d, got %d", want, got)
+	}
+	if orig.AccessList() != nil {
+		if !reflect.DeepEqual(orig.AccessList(), cpy.AccessList()) {
+			return fmt.Errorf("access list wrong!")
+		}
+	}
+	return nil
+}

core/vm/access_list_tracer.go

@@ -0,0 +1,177 @@
+// Copyright 2021 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vm
+
+import (
+	"math/big"
+	"time"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/core/types"
+)
+
+// accessList is an accumulator for the set of accounts and storage slots an EVM
+// contract execution touches.
+type accessList map[common.Address]accessListSlots
+
+// accessListSlots is an accumulator for the set of storage slots within a single
+// contract that an EVM contract execution touches.
+type accessListSlots map[common.Hash]struct{}
+
+// newAccessList creates a new accessList.
+func newAccessList() accessList {
+	return make(map[common.Address]accessListSlots)
+}
+
+// addAddress adds an address to the accesslist.
+func (al accessList) addAddress(address common.Address) {
+	// Set address if not previously present
+	if _, present := al[address]; !present {
+		al[address] = make(map[common.Hash]struct{})
+	}
+}
+
+// addSlot adds a storage slot to the accesslist.
+func (al accessList) addSlot(address common.Address, slot common.Hash) {
+	// Set address if not previously present
+	al.addAddress(address)
+
+	// Set the slot on the surely existent storage set
+	al[address][slot] = struct{}{}
+}
+
+// equal checks if the content of the current access list is the same as the
+// content of the other one.
+func (al accessList) equal(other accessList) bool {
+	// Cross reference the accounts first
+	if len(al) != len(other) {
+		return false
+	}
+	for addr := range al {
+		if _, ok := other[addr]; !ok {
+			return false
+		}
+	}
+	for addr := range other {
+		if _, ok := al[addr]; !ok {
+			return false
+		}
+	}
+	// Accounts match, cross reference the storage slots too
+	for addr, slots := range al {
+		otherslots := other[addr]
+
+		if len(slots) != len(otherslots) {
+			return false
+		}
+		for hash := range slots {
+			if _, ok := otherslots[hash]; !ok {
+				return false
+			}
+		}
+		for hash := range otherslots {
+			if _, ok := slots[hash]; !ok {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// accesslist converts the accesslist to a types.AccessList.
+func (al accessList) accessList() types.AccessList {
+	acl := make(types.AccessList, 0, len(al))
+	for addr, slots := range al {
+		tuple := types.AccessTuple{Address: addr}
+		for slot := range slots {
+			tuple.StorageKeys = append(tuple.StorageKeys, slot)
+		}
+		acl = append(acl, tuple)
+	}
+	return acl
+}
+
+// AccessListTracer is a tracer that accumulates touched accounts and storage
+// slots into an internal set.
+type AccessListTracer struct {
+	excl map[common.Address]struct{} // Set of account to exclude from the list
+	list accessList                  // Set of accounts and storage slots touched
+}
+
+// NewAccessListTracer creates a new tracer that can generate AccessLists.
+// An optional AccessList can be specified to occupy slots and addresses in
+// the resulting accesslist.
+func NewAccessListTracer(acl types.AccessList, from, to common.Address, precompiles []common.Address) *AccessListTracer {
+	excl := map[common.Address]struct{}{
+		from: {}, to: {},
+	}
+	for _, addr := range precompiles {
+		excl[addr] = struct{}{}
+	}
+	list := newAccessList()
+	for _, al := range acl {
+		if _, ok := excl[al.Address]; !ok {
+			list.addAddress(al.Address)
+		}
+		for _, slot := range al.StorageKeys {
+			list.addSlot(al.Address, slot)
+		}
+	}
+	return &AccessListTracer{
+		excl: excl,
+		list: list,
+	}
+}
+
+func (a *AccessListTracer) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+}
+
+// CaptureState captures all opcodes that touch storage or addresses and adds them to the accesslist.
+func (a *AccessListTracer) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) {
+	stack := scope.Stack
+	if (op == SLOAD || op == SSTORE) && stack.len() >= 1 {
+		slot := common.Hash(stack.data[stack.len()-1].Bytes32())
+		a.list.addSlot(scope.Contract.Address(), slot)
+	}
+	if (op == EXTCODECOPY || op == EXTCODEHASH || op == EXTCODESIZE || op == BALANCE || op == SELFDESTRUCT) && stack.len() >= 1 {
+		addr := common.Address(stack.data[stack.len()-1].Bytes20())
+		if _, ok := a.excl[addr]; !ok {
+			a.list.addAddress(addr)
+		}
+	}
+	if (op == DELEGATECALL || op == CALL || op == STATICCALL || op == CALLCODE) && stack.len() >= 5 {
+		addr := common.Address(stack.data[stack.len()-2].Bytes20())
+		if _, ok := a.excl[addr]; !ok {
+			a.list.addAddress(addr)
+		}
+	}
+}
+
+func (*AccessListTracer) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) {
+}
+
+func (*AccessListTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {}
+
+// AccessList returns the current accesslist maintained by the tracer.
+func (a *AccessListTracer) AccessList() types.AccessList {
+	return a.list.accessList()
+}
+
+// Equal returns if the content of two access list traces are equal.
+func (a *AccessListTracer) Equal(other *AccessListTracer) bool {
+	return a.list.equal(other.list)
+}

core/vm/contracts.go

@@ -22,10 +22,9 @@ import (
 	"errors"
 	"math/big"
 
-	"github.com/XinFinOrg/XDPoSChain/core/vm/privacy"
-
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/common/math"
+	"github.com/XinFinOrg/XDPoSChain/core/vm/privacy"
 	"github.com/XinFinOrg/XDPoSChain/crypto"
 	"github.com/XinFinOrg/XDPoSChain/crypto/blake2b"
 	"github.com/XinFinOrg/XDPoSChain/crypto/bn256"
@@ -87,6 +86,54 @@ var PrecompiledContractsIstanbul = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{42}): &XDCxEpochPrice{},
 }
 
+var PrecompiledContractsXDCv2 = map[common.Address]PrecompiledContract{
+	common.BytesToAddress([]byte{1}): &ecrecover{},
+	common.BytesToAddress([]byte{2}): &sha256hash{},
+	common.BytesToAddress([]byte{3}): &ripemd160hash{},
+	common.BytesToAddress([]byte{4}): &dataCopy{},
+	common.BytesToAddress([]byte{5}): &bigModExp{},
+	common.BytesToAddress([]byte{6}): &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{9}): &blake2F{},
+}
+
+var (
+	PrecompiledAddressesXDCv2     []common.Address
+	PrecompiledAddressesIstanbul  []common.Address
+	PrecompiledAddressesByzantium []common.Address
+	PrecompiledAddressesHomestead []common.Address
+)
+
+func init() {
+	for k := range PrecompiledContractsHomestead {
+		PrecompiledAddressesHomestead = append(PrecompiledAddressesHomestead, k)
+	}
+	for k := range PrecompiledContractsByzantium {
+		PrecompiledAddressesHomestead = append(PrecompiledAddressesByzantium, k)
+	}
+	for k := range PrecompiledContractsIstanbul {
+		PrecompiledAddressesIstanbul = append(PrecompiledAddressesIstanbul, k)
+	}
+	for k := range PrecompiledContractsXDCv2 {
+		PrecompiledAddressesXDCv2 = append(PrecompiledAddressesXDCv2, k)
+	}
+}
+
+// ActivePrecompiles returns the precompiles enabled with the current configuration.
+func ActivePrecompiles(rules params.Rules) []common.Address {
+	switch {
+	case rules.IsXDCxDisable:
+		return PrecompiledAddressesXDCv2
+	case rules.IsIstanbul:
+		return PrecompiledAddressesIstanbul
+	case rules.IsByzantium:
+		return PrecompiledAddressesByzantium
+	default:
+		return PrecompiledAddressesHomestead
+	}
+}
+
 // RunPrecompiledContract runs and evaluates the output of a precompiled contract.
 func RunPrecompiledContract(p PrecompiledContract, input []byte, contract *Contract) (ret []byte, err error) {
 	gas := p.RequiredGas(input)
@@ -488,7 +535,6 @@ func (c *bn256PairingByzantium) Run(input []byte) ([]byte, error) {
 	return runBn256Pairing(input)
 }
 
-
 type blake2F struct{}
 
 func (c *blake2F) RequiredGas(input []byte) uint64 {

core/vm/contracts_test.go

@@ -357,9 +357,15 @@ var bn256PairingTests = []precompiledTest{
 }
 
 var XDCxLastPriceTests = []precompiledTest{
+	// {
+	// 	input:    common.Bytes2Hex(append(common.Hex2BytesFixed(BTCAddress, 32), common.Hex2BytesFixed(USDTAddress, 32)...)),
+	// 	expected: common.Bytes2Hex(common.LeftPadBytes(BTCUSDTLastPrice.Bytes(), XDCXPriceNumberOfBytesReturn)),
+	// 	name:     "BTCUSDT",
+	// },
+	// since we diable XDCx precompiles, the test now returns 0
 	{
 		input:    common.Bytes2Hex(append(common.Hex2BytesFixed(BTCAddress, 32), common.Hex2BytesFixed(USDTAddress, 32)...)),
-		expected: common.Bytes2Hex(common.LeftPadBytes(BTCUSDTLastPrice.Bytes(), XDCXPriceNumberOfBytesReturn)),
+		expected: common.Bytes2Hex(common.LeftPadBytes(common.Big0.Bytes(), XDCXPriceNumberOfBytesReturn)),
 		name:     "BTCUSDT",
 	},
 	{
@@ -375,9 +381,15 @@ var XDCxLastPriceTests = []precompiledTest{
 }
 
 var XDCxEpochPriceTests = []precompiledTest{
+	// {
+	// 	input:    common.Bytes2Hex(append(common.Hex2BytesFixed(BTCAddress, 32), common.Hex2BytesFixed(USDTAddress, 32)...)),
+	// 	expected: common.Bytes2Hex(common.LeftPadBytes(BTCUSDTEpochPrice.Bytes(), XDCXPriceNumberOfBytesReturn)),
+	// 	name:     "BTCUSDT",
+	// },
+	// since we diable XDCx precompiles, the test now returns 0
 	{
 		input:    common.Bytes2Hex(append(common.Hex2BytesFixed(BTCAddress, 32), common.Hex2BytesFixed(USDTAddress, 32)...)),
-		expected: common.Bytes2Hex(common.LeftPadBytes(BTCUSDTEpochPrice.Bytes(), XDCXPriceNumberOfBytesReturn)),
+		expected: common.Bytes2Hex(common.LeftPadBytes(common.Big0.Bytes(), XDCXPriceNumberOfBytesReturn)),
 		name:     "BTCUSDT",
 	},
 	{

core/vm/eips.go

@@ -33,6 +33,8 @@ func EnableEIP(eipNum int, jt *JumpTable) error {
 		enable3855(jt)
 	case 3198:
 		enable3198(jt)
+	case 2929:
+		enable2929(jt)
 	case 2200:
 		enable2200(jt)
 	case 1884:
@@ -65,9 +67,9 @@ func enable1884(jt *JumpTable) {
 	}
 }
 
-func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	balance, _ := uint256.FromBig(interpreter.evm.StateDB.GetBalance(callContext.contract.Address()))
-	callContext.stack.push(balance)
+func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	balance, _ := uint256.FromBig(interpreter.evm.StateDB.GetBalance(scope.Contract.Address()))
+	scope.Stack.push(balance)
 	return nil, nil
 }
 
@@ -84,9 +86,9 @@ func enable1344(jt *JumpTable) {
 }
 
 // opChainID implements CHAINID opcode
-func opChainID(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opChainID(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	chainId, _ := uint256.FromBig(interpreter.evm.chainConfig.ChainId)
-	callContext.stack.push(chainId)
+	scope.Stack.push(chainId)
 	return nil, nil
 }
 
@@ -96,6 +98,44 @@ func enable2200(jt *JumpTable) {
 	jt[SSTORE].dynamicGas = gasSStoreEIP2200
 }
 
+// enable2929 enables "EIP-2929: Gas cost increases for state access opcodes"
+// https://eips.ethereum.org/EIPS/eip-2929
+func enable2929(jt *JumpTable) {
+	jt[SSTORE].dynamicGas = gasSStoreEIP2929
+
+	jt[SLOAD].constantGas = 0
+	jt[SLOAD].dynamicGas = gasSLoadEIP2929
+
+	jt[EXTCODECOPY].constantGas = WarmStorageReadCostEIP2929
+	jt[EXTCODECOPY].dynamicGas = gasExtCodeCopyEIP2929
+
+	jt[EXTCODESIZE].constantGas = WarmStorageReadCostEIP2929
+	jt[EXTCODESIZE].dynamicGas = gasEip2929AccountCheck
+
+	jt[EXTCODEHASH].constantGas = WarmStorageReadCostEIP2929
+	jt[EXTCODEHASH].dynamicGas = gasEip2929AccountCheck
+
+	jt[BALANCE].constantGas = WarmStorageReadCostEIP2929
+	jt[BALANCE].dynamicGas = gasEip2929AccountCheck
+
+	jt[CALL].constantGas = WarmStorageReadCostEIP2929
+	jt[CALL].dynamicGas = gasCallEIP2929
+
+	jt[CALLCODE].constantGas = WarmStorageReadCostEIP2929
+	jt[CALLCODE].dynamicGas = gasCallCodeEIP2929
+
+	jt[STATICCALL].constantGas = WarmStorageReadCostEIP2929
+	jt[STATICCALL].dynamicGas = gasStaticCallEIP2929
+
+	jt[DELEGATECALL].constantGas = WarmStorageReadCostEIP2929
+	jt[DELEGATECALL].dynamicGas = gasDelegateCallEIP2929
+
+	// This was previously part of the dynamic cost, but we're using it as a constantGas
+	// factor here
+	jt[SELFDESTRUCT].constantGas = params.SelfdestructGasEIP150
+	jt[SELFDESTRUCT].dynamicGas = gasSelfdestructEIP2929
+}
+
 // enable3198 applies EIP-3198 (BASEFEE Opcode)
 // - Adds an opcode that returns the current block's base fee.
 func enable3198(jt *JumpTable) {
@@ -109,9 +149,9 @@ func enable3198(jt *JumpTable) {
 }
 
 // opBaseFee implements BASEFEE opcode
-func opBaseFee(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opBaseFee(pc *uint64, interpreter *EVMInterpreter, callContext *ScopeContext) ([]byte, error) {
 	baseFee, _ := uint256.FromBig(common.MinGasPrice50x)
-	callContext.stack.push(baseFee)
+	callContext.Stack.push(baseFee)
 	return nil, nil
 }
 
@@ -127,7 +167,7 @@ func enable3855(jt *JumpTable) {
 }
 
 // opPush0 implements the PUSH0 opcode
-func opPush0(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int))
+func opPush0(pc *uint64, interpreter *EVMInterpreter, callContext *ScopeContext) ([]byte, error) {
+	callContext.Stack.push(new(uint256.Int))
 	return nil, nil
 }

core/vm/evm.go

@@ -23,10 +23,9 @@ import (
 	"time"
 
 	"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
-	"github.com/XinFinOrg/XDPoSChain/params"
-
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/crypto"
+	"github.com/XinFinOrg/XDPoSChain/params"
 )
 
 // emptyCodeHash is used by create to ensure deployment is disallowed to already
@@ -43,24 +42,49 @@ type (
 	GetHashFunc func(uint64) common.Hash
 )
 
+func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) {
+	var precompiles map[common.Address]PrecompiledContract
+	switch {
+	case evm.chainRules.IsXDCxDisable:
+		precompiles = PrecompiledContractsXDCv2
+	case evm.chainRules.IsIstanbul:
+		precompiles = PrecompiledContractsIstanbul
+	case evm.chainRules.IsByzantium:
+		precompiles = PrecompiledContractsByzantium
+	default:
+		precompiles = PrecompiledContractsHomestead
+	}
+	p, ok := precompiles[addr]
+	return p, ok
+}
+
+func (evm *EVM) precompile2(addr common.Address) (PrecompiledContract, bool) {
+	var precompiles map[common.Address]PrecompiledContract
+	switch {
+	case evm.chainRules.IsXDCxDisable:
+		precompiles = PrecompiledContractsXDCv2
+	case evm.chainRules.IsIstanbul && evm.ChainConfig().IsTIPXDCXCancellationFee(evm.BlockNumber):
+		precompiles = PrecompiledContractsIstanbul
+	case evm.chainRules.IsByzantium:
+		precompiles = PrecompiledContractsByzantium
+	default:
+		precompiles = PrecompiledContractsHomestead
+	}
+	p, ok := precompiles[addr]
+	return p, ok
+}
+
 // run runs the given contract and takes care of running precompiles with a fallback to the byte code interpreter.
 func run(evm *EVM, contract *Contract, input []byte, readOnly bool) ([]byte, error) {
 	if contract.CodeAddr != nil {
-		var precompiles map[common.Address]PrecompiledContract
-		switch {
-		case evm.chainRules.IsIstanbul:
-			precompiles = PrecompiledContractsIstanbul
-		case evm.chainRules.IsByzantium:
-			precompiles = PrecompiledContractsByzantium
-		default:
-			precompiles = PrecompiledContractsHomestead
-		}
-		if p := precompiles[*contract.CodeAddr]; p != nil {
-			switch p.(type) {
-			case *XDCxEpochPrice:
-				p.(*XDCxEpochPrice).SetTradingState(evm.tradingStateDB)
-			case *XDCxLastPrice:
-				p.(*XDCxLastPrice).SetTradingState(evm.tradingStateDB)
+		if p, isPrecompile := evm.precompile(*contract.CodeAddr); isPrecompile {
+			if evm.chainConfig.IsTIPXDCXReceiver(evm.BlockNumber) {
+				switch p := p.(type) {
+				case *XDCxEpochPrice:
+					p.SetTradingState(evm.tradingStateDB)
+				case *XDCxLastPrice:
+					p.SetTradingState(evm.tradingStateDB)
+				}
 			}
 			return RunPrecompiledContract(p, input, contract)
 		}
@@ -205,19 +229,11 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 		snapshot = evm.StateDB.Snapshot()
 	)
 	if !evm.StateDB.Exist(addr) {
-		precompiles := PrecompiledContractsHomestead
-		if evm.chainRules.IsByzantium {
-			precompiles = PrecompiledContractsByzantium
-		}
-		if evm.ChainConfig().IsTIPXDCXCancellationFee(evm.BlockNumber) {
-			if evm.chainRules.IsIstanbul {
-				precompiles = PrecompiledContractsIstanbul
-			}
-		}
-		if precompiles[addr] == nil && evm.chainRules.IsEIP158 && value.Sign() == 0 {
+		_, isPrecompile := evm.precompile2(addr)
+		if !isPrecompile && evm.chainRules.IsEIP158 && value.Sign() == 0 {
 			// Calling a non existing account, don't do anything, but ping the tracer
 			if evm.vmConfig.Debug && evm.depth == 0 {
-				evm.vmConfig.Tracer.CaptureStart(caller.Address(), addr, false, input, gas, value)
+				evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
 				evm.vmConfig.Tracer.CaptureEnd(ret, 0, 0, nil)
 			}
 			return nil, gas, nil
@@ -235,7 +251,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 
 	// Capture the tracer start/end events in debug mode
 	if evm.vmConfig.Debug && evm.depth == 0 {
-		evm.vmConfig.Tracer.CaptureStart(caller.Address(), addr, false, input, gas, value)
+		evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
 
 		defer func() { // Lazy evaluation of the parameters
 			evm.vmConfig.Tracer.CaptureEnd(ret, gas-contract.Gas, time.Since(start), err)
@@ -384,7 +400,11 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
 	}
 	nonce := evm.StateDB.GetNonce(caller.Address())
 	evm.StateDB.SetNonce(caller.Address(), nonce+1)
-
+	// We add this to the access list _before_ taking a snapshot. Even if the creation fails,
+	// the access-list change should not be rolled back
+	if evm.chainRules.IsEIP1559 {
+		evm.StateDB.AddAddressToAccessList(address)
+	}
 	// Ensure there's no existing contract already at the designated address
 	contractHash := evm.StateDB.GetCodeHash(address)
 	if evm.StateDB.GetNonce(address) != 0 || (contractHash != (common.Hash{}) && contractHash != emptyCodeHash) {
@@ -404,7 +424,7 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
 	contract.SetCodeOptionalHash(&address, codeAndHash)
 
 	if evm.vmConfig.Debug && evm.depth == 0 {
-		evm.vmConfig.Tracer.CaptureStart(caller.Address(), address, true, codeAndHash.code, gas, value)
+		evm.vmConfig.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value)
 	}
 	start := time.Now()
 

core/vm/instructions.go

@@ -26,68 +26,68 @@ import (
 	"golang.org/x/crypto/sha3"
 )
 
-func opAdd(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opAdd(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Add(&x, y)
 	return nil, nil
 }
 
-func opSub(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opSub(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Sub(&x, y)
 	return nil, nil
 }
 
-func opMul(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opMul(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Mul(&x, y)
 	return nil, nil
 }
 
-func opDiv(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opDiv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Div(&x, y)
 	return nil, nil
 }
 
-func opSdiv(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opSdiv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.SDiv(&x, y)
 	return nil, nil
 }
 
-func opMod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opMod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Mod(&x, y)
 	return nil, nil
 }
 
-func opSmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opSmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.SMod(&x, y)
 	return nil, nil
 }
 
-func opExp(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	base, exponent := callContext.stack.pop(), callContext.stack.peek()
+func opExp(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	base, exponent := scope.Stack.pop(), scope.Stack.peek()
 	exponent.Exp(&base, exponent)
 	return nil, nil
 }
 
-func opSignExtend(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	back, num := callContext.stack.pop(), callContext.stack.peek()
+func opSignExtend(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	back, num := scope.Stack.pop(), scope.Stack.peek()
 	num.ExtendSign(num, &back)
 	return nil, nil
 }
 
-func opNot(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x := callContext.stack.peek()
+func opNot(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x := scope.Stack.peek()
 	x.Not(x)
 	return nil, nil
 }
 
-func opLt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opLt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	if x.Lt(y) {
 		y.SetOne()
 	} else {
@@ -96,8 +96,8 @@ func opLt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte
 	return nil, nil
 }
 
-func opGt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opGt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	if x.Gt(y) {
 		y.SetOne()
 	} else {
@@ -106,8 +106,8 @@ func opGt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte
 	return nil, nil
 }
 
-func opSlt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opSlt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	if x.Slt(y) {
 		y.SetOne()
 	} else {
@@ -116,8 +116,8 @@ func opSlt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byt
 	return nil, nil
 }
 
-func opSgt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opSgt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	if x.Sgt(y) {
 		y.SetOne()
 	} else {
@@ -126,8 +126,8 @@ func opSgt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byt
 	return nil, nil
 }
 
-func opEq(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opEq(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	if x.Eq(y) {
 		y.SetOne()
 	} else {
@@ -136,8 +136,8 @@ func opEq(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte
 	return nil, nil
 }
 
-func opIszero(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x := callContext.stack.peek()
+func opIszero(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x := scope.Stack.peek()
 	if x.IsZero() {
 		x.SetOne()
 	} else {
@@ -146,32 +146,32 @@ func opIszero(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]
 	return nil, nil
 }
 
-func opAnd(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opAnd(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.And(&x, y)
 	return nil, nil
 }
 
-func opOr(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opOr(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Or(&x, y)
 	return nil, nil
 }
 
-func opXor(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y := callContext.stack.pop(), callContext.stack.peek()
+func opXor(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y := scope.Stack.pop(), scope.Stack.peek()
 	y.Xor(&x, y)
 	return nil, nil
 }
 
-func opByte(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	th, val := callContext.stack.pop(), callContext.stack.peek()
+func opByte(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	th, val := scope.Stack.pop(), scope.Stack.peek()
 	val.Byte(&th)
 	return nil, nil
 }
 
-func opAddmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y, z := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.peek()
+func opAddmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y, z := scope.Stack.pop(), scope.Stack.pop(), scope.Stack.peek()
 	if z.IsZero() {
 		z.Clear()
 	} else {
@@ -180,8 +180,8 @@ func opAddmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]
 	return nil, nil
 }
 
-func opMulmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x, y, z := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.peek()
+func opMulmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x, y, z := scope.Stack.pop(), scope.Stack.pop(), scope.Stack.peek()
 	z.MulMod(&x, &y, z)
 	return nil, nil
 }
@@ -189,9 +189,9 @@ func opMulmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]
 // opSHL implements Shift Left
 // The SHL instruction (shift left) pops 2 values from the stack, first arg1 and then arg2,
 // and pushes on the stack arg2 shifted to the left by arg1 number of bits.
-func opSHL(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opSHL(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	// Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards
-	shift, value := callContext.stack.pop(), callContext.stack.peek()
+	shift, value := scope.Stack.pop(), scope.Stack.peek()
 	if shift.LtUint64(256) {
 		value.Lsh(value, uint(shift.Uint64()))
 	} else {
@@ -203,9 +203,9 @@ func opSHL(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byt
 // opSHR implements Logical Shift Right
 // The SHR instruction (logical shift right) pops 2 values from the stack, first arg1 and then arg2,
 // and pushes on the stack arg2 shifted to the right by arg1 number of bits with zero fill.
-func opSHR(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opSHR(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	// Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards
-	shift, value := callContext.stack.pop(), callContext.stack.peek()
+	shift, value := scope.Stack.pop(), scope.Stack.peek()
 	if shift.LtUint64(256) {
 		value.Rsh(value, uint(shift.Uint64()))
 	} else {
@@ -217,8 +217,8 @@ func opSHR(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byt
 // opSAR implements Arithmetic Shift Right
 // The SAR instruction (arithmetic shift right) pops 2 values from the stack, first arg1 and then arg2,
 // and pushes on the stack arg2 shifted to the right by arg1 number of bits with sign extension.
-func opSAR(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	shift, value := callContext.stack.pop(), callContext.stack.peek()
+func opSAR(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	shift, value := scope.Stack.pop(), scope.Stack.peek()
 	if shift.GtUint64(256) {
 		if value.Sign() >= 0 {
 			value.Clear()
@@ -233,9 +233,9 @@ func opSAR(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byt
 	return nil, nil
 }
 
-func opKeccak256(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	offset, size := callContext.stack.pop(), callContext.stack.peek()
-	data := callContext.memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
+func opKeccak256(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	offset, size := scope.Stack.pop(), scope.Stack.peek()
+	data := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
 
 	if interpreter.hasher == nil {
 		interpreter.hasher = sha3.NewLegacyKeccak256().(keccakState)
@@ -253,37 +253,37 @@ func opKeccak256(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx)
 	size.SetBytes(interpreter.hasherBuf[:])
 	return nil, nil
 }
-func opAddress(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetBytes(callContext.contract.Address().Bytes()))
+func opAddress(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Address().Bytes()))
 	return nil, nil
 }
 
-func opBalance(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	slot := callContext.stack.peek()
+func opBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	slot := scope.Stack.peek()
 	address := common.Address(slot.Bytes20())
 	slot.SetFromBig(interpreter.evm.StateDB.GetBalance(address))
 	return nil, nil
 }
 
-func opOrigin(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetBytes(interpreter.evm.Origin.Bytes()))
+func opOrigin(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetBytes(interpreter.evm.Origin.Bytes()))
 	return nil, nil
 }
-func opCaller(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetBytes(callContext.contract.Caller().Bytes()))
+func opCaller(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Caller().Bytes()))
 	return nil, nil
 }
 
-func opCallValue(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	v, _ := uint256.FromBig(callContext.contract.value)
-	callContext.stack.push(v)
+func opCallValue(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	v, _ := uint256.FromBig(scope.Contract.value)
+	scope.Stack.push(v)
 	return nil, nil
 }
 
-func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	x := callContext.stack.peek()
+func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	x := scope.Stack.peek()
 	if offset, overflow := x.Uint64WithOverflow(); !overflow {
-		data := getData(callContext.contract.Input, offset, 32)
+		data := getData(scope.Contract.Input, offset, 32)
 		x.SetBytes(data)
 	} else {
 		x.Clear()
@@ -291,16 +291,16 @@ func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, callContext *callCt
 	return nil, nil
 }
 
-func opCallDataSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetUint64(uint64(len(callContext.contract.Input))))
+func opCallDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetUint64(uint64(len(scope.Contract.Input))))
 	return nil, nil
 }
 
-func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	var (
-		memOffset  = callContext.stack.pop()
-		dataOffset = callContext.stack.pop()
-		length     = callContext.stack.pop()
+		memOffset  = scope.Stack.pop()
+		dataOffset = scope.Stack.pop()
+		length     = scope.Stack.pop()
 	)
 	dataOffset64, overflow := dataOffset.Uint64WithOverflow()
 	if overflow {
@@ -309,21 +309,21 @@ func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCt
 	// These values are checked for overflow during gas cost calculation
 	memOffset64 := memOffset.Uint64()
 	length64 := length.Uint64()
-	callContext.memory.Set(memOffset64, length64, getData(callContext.contract.Input, dataOffset64, length64))
+	scope.Memory.Set(memOffset64, length64, getData(scope.Contract.Input, dataOffset64, length64))
 
 	return nil, nil
 }
 
-func opReturnDataSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetUint64(uint64(len(interpreter.returnData))))
+func opReturnDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetUint64(uint64(len(interpreter.returnData))))
 	return nil, nil
 }
 
-func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	var (
-		memOffset  = callContext.stack.pop()
-		dataOffset = callContext.stack.pop()
-		length     = callContext.stack.pop()
+		memOffset  = scope.Stack.pop()
+		dataOffset = scope.Stack.pop()
+		length     = scope.Stack.pop()
 	)
 
 	offset64, overflow := dataOffset.Uint64WithOverflow()
@@ -337,42 +337,42 @@ func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, callContext *call
 	if overflow || uint64(len(interpreter.returnData)) < end64 {
 		return nil, ErrReturnDataOutOfBounds
 	}
-	callContext.memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[offset64:end64])
+	scope.Memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[offset64:end64])
 	return nil, nil
 }
 
-func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	slot := callContext.stack.peek()
+func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	slot := scope.Stack.peek()
 	slot.SetUint64(uint64(interpreter.evm.StateDB.GetCodeSize(common.Address(slot.Bytes20()))))
 	return nil, nil
 }
 
-func opCodeSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	l := new(uint256.Int)
-	l.SetUint64(uint64(len(callContext.contract.Code)))
-	callContext.stack.push(l)
+	l.SetUint64(uint64(len(scope.Contract.Code)))
+	scope.Stack.push(l)
 	return nil, nil
 }
 
-func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	var (
-		memOffset  = callContext.stack.pop()
-		codeOffset = callContext.stack.pop()
-		length     = callContext.stack.pop()
+		memOffset  = scope.Stack.pop()
+		codeOffset = scope.Stack.pop()
+		length     = scope.Stack.pop()
 	)
 	uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
 	if overflow {
 		uint64CodeOffset = 0xffffffffffffffff
 	}
-	codeCopy := getData(callContext.contract.Code, uint64CodeOffset, length.Uint64())
-	callContext.memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
+	codeCopy := getData(scope.Contract.Code, uint64CodeOffset, length.Uint64())
+	scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
 
 	return nil, nil
 }
 
-func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	var (
-		stack      = callContext.stack
+		stack      = scope.Stack
 		a          = stack.pop()
 		memOffset  = stack.pop()
 		codeOffset = stack.pop()
@@ -384,7 +384,7 @@ func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx
 	}
 	addr := common.Address(a.Bytes20())
 	codeCopy := getData(interpreter.evm.StateDB.GetCode(addr), uint64CodeOffset, length.Uint64())
-	callContext.memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
+	scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
 
 	return nil, nil
 }
@@ -392,16 +392,21 @@ func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx
 // opExtCodeHash returns the code hash of a specified account.
 // There are several cases when the function is called, while we can relay everything
 // to `state.GetCodeHash` function to ensure the correctness.
-//   (1) Caller tries to get the code hash of a normal contract account, state
+//
+//	(1) Caller tries to get the code hash of a normal contract account, state
+//
 // should return the relative code hash and set it as the result.
 //
-//   (2) Caller tries to get the code hash of a non-existent account, state should
+//	(2) Caller tries to get the code hash of a non-existent account, state should
+//
 // return common.Hash{} and zero will be set as the result.
 //
-//   (3) Caller tries to get the code hash for an account without contract code,
+//	(3) Caller tries to get the code hash for an account without contract code,
+//
 // state should return emptyCodeHash(0xc5d246...) as the result.
 //
-//   (4) Caller tries to get the code hash of a precompiled account, the result
+//	(4) Caller tries to get the code hash of a precompiled account, the result
+//
 // should be zero or emptyCodeHash.
 //
 // It is worth noting that in order to avoid unnecessary create and clean,
@@ -410,13 +415,15 @@ func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx
 // If the precompile account is not transferred any amount on a private or
 // customized chain, the return value will be zero.
 //
-//   (5) Caller tries to get the code hash for an account which is marked as suicided
+//	(5) Caller tries to get the code hash for an account which is marked as suicided
+//
 // in the current transaction, the code hash of this account should be returned.
 //
-//   (6) Caller tries to get the code hash for an account which is marked as deleted,
+//	(6) Caller tries to get the code hash for an account which is marked as deleted,
+//
 // this account should be regarded as a non-existent account and zero should be returned.
-func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	slot := callContext.stack.peek()
+func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	slot := scope.Stack.peek()
 	address := common.Address(slot.Bytes20())
 	if interpreter.evm.StateDB.Empty(address) {
 		slot.Clear()
@@ -426,14 +433,14 @@ func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx
 	return nil, nil
 }
 
-func opGasprice(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opGasprice(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	v, _ := uint256.FromBig(interpreter.evm.GasPrice)
-	callContext.stack.push(v)
+	scope.Stack.push(v)
 	return nil, nil
 }
 
-func opBlockhash(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	num := callContext.stack.peek()
+func opBlockhash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	num := scope.Stack.peek()
 	num64, overflow := num.Uint64WithOverflow()
 	if overflow {
 		num.Clear()
@@ -454,108 +461,108 @@ func opBlockhash(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx)
 	return nil, nil
 }
 
-func opCoinbase(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetBytes(interpreter.evm.Coinbase.Bytes()))
+func opCoinbase(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetBytes(interpreter.evm.Coinbase.Bytes()))
 	return nil, nil
 }
 
-func opTimestamp(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opTimestamp(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	v, _ := uint256.FromBig(interpreter.evm.Time)
-	callContext.stack.push(v)
+	scope.Stack.push(v)
 	return nil, nil
 }
 
-func opNumber(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opNumber(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	v, _ := uint256.FromBig(interpreter.evm.BlockNumber)
-	callContext.stack.push(v)
+	scope.Stack.push(v)
 	return nil, nil
 }
 
-func opDifficulty(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opDifficulty(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	v, _ := uint256.FromBig(interpreter.evm.Difficulty)
-	callContext.stack.push(v)
+	scope.Stack.push(v)
 	return nil, nil
 }
 
-func opRandom(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opRandom(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	var v *uint256.Int
 	if interpreter.evm.Context.Random != nil {
 		v = new(uint256.Int).SetBytes((interpreter.evm.Context.Random.Bytes()))
 	} else { // if context random is not set, use emptyCodeHash as default
 		v = new(uint256.Int).SetBytes(emptyCodeHash.Bytes())
 	}
-	callContext.stack.push(v)
+	scope.Stack.push(v)
 	return nil, nil
 }
 
-func opGasLimit(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetUint64(interpreter.evm.GasLimit))
+func opGasLimit(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetUint64(interpreter.evm.GasLimit))
 	return nil, nil
 }
 
-func opPop(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.pop()
+func opPop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.pop()
 	return nil, nil
 }
 
-func opMload(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	v := callContext.stack.peek()
+func opMload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	v := scope.Stack.peek()
 	offset := int64(v.Uint64())
-	v.SetBytes(callContext.memory.GetPtr(offset, 32))
+	v.SetBytes(scope.Memory.GetPtr(offset, 32))
 	return nil, nil
 }
 
-func opMstore(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opMstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	// pop value of the stack
-	mStart, val := callContext.stack.pop(), callContext.stack.pop()
-	callContext.memory.Set32(mStart.Uint64(), &val)
+	mStart, val := scope.Stack.pop(), scope.Stack.pop()
+	scope.Memory.Set32(mStart.Uint64(), &val)
 	return nil, nil
 }
 
-func opMstore8(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	off, val := callContext.stack.pop(), callContext.stack.pop()
-	callContext.memory.store[off.Uint64()] = byte(val.Uint64())
+func opMstore8(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	off, val := scope.Stack.pop(), scope.Stack.pop()
+	scope.Memory.store[off.Uint64()] = byte(val.Uint64())
 	return nil, nil
 }
 
-func opSload(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	loc := callContext.stack.peek()
+func opSload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	loc := scope.Stack.peek()
 	hash := common.Hash(loc.Bytes32())
-	val := interpreter.evm.StateDB.GetState(callContext.contract.Address(), hash)
+	val := interpreter.evm.StateDB.GetState(scope.Contract.Address(), hash)
 	loc.SetBytes(val.Bytes())
 	return nil, nil
 }
 
-func opSstore(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opSstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	if interpreter.readOnly {
 		return nil, ErrWriteProtection
 	}
-	loc := callContext.stack.pop()
-	val := callContext.stack.pop()
-	interpreter.evm.StateDB.SetState(callContext.contract.Address(),
+	loc := scope.Stack.pop()
+	val := scope.Stack.pop()
+	interpreter.evm.StateDB.SetState(scope.Contract.Address(),
 		common.Hash(loc.Bytes32()), common.Hash(val.Bytes32()))
 	return nil, nil
 }
 
-func opJump(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opJump(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	if atomic.LoadInt32(&interpreter.evm.abort) != 0 {
 		return nil, errStopToken
 	}
-	pos := callContext.stack.pop()
-	if !callContext.contract.validJumpdest(&pos) {
+	pos := scope.Stack.pop()
+	if !scope.Contract.validJumpdest(&pos) {
 		return nil, ErrInvalidJump
 	}
 	*pc = pos.Uint64() - 1 // pc will be increased by the interpreter loop
 	return nil, nil
 }
 
-func opJumpi(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opJumpi(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	if atomic.LoadInt32(&interpreter.evm.abort) != 0 {
 		return nil, errStopToken
 	}
-	pos, cond := callContext.stack.pop(), callContext.stack.pop()
+	pos, cond := scope.Stack.pop(), scope.Stack.pop()
 	if !cond.IsZero() {
-		if !callContext.contract.validJumpdest(&pos) {
+		if !scope.Contract.validJumpdest(&pos) {
 			return nil, ErrInvalidJump
 		}
 		*pc = pos.Uint64() - 1 // pc will be increased by the interpreter loop
@@ -563,34 +570,34 @@ func opJumpi(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]b
 	return nil, nil
 }
 
-func opJumpdest(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opJumpdest(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	return nil, nil
 }
 
-func opPc(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetUint64(*pc))
+func opPc(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetUint64(*pc))
 	return nil, nil
 }
 
-func opMsize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetUint64(uint64(callContext.memory.Len())))
+func opMsize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetUint64(uint64(scope.Memory.Len())))
 	return nil, nil
 }
 
-func opGas(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	callContext.stack.push(new(uint256.Int).SetUint64(callContext.contract.Gas))
+func opGas(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	scope.Stack.push(new(uint256.Int).SetUint64(scope.Contract.Gas))
 	return nil, nil
 }
 
-func opCreate(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opCreate(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	if interpreter.readOnly {
 		return nil, ErrWriteProtection
 	}
 	var (
-		value        = callContext.stack.pop()
-		offset, size = callContext.stack.pop(), callContext.stack.pop()
-		input        = callContext.memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
-		gas          = callContext.contract.Gas
+		value        = scope.Stack.pop()
+		offset, size = scope.Stack.pop(), scope.Stack.pop()
+		input        = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
+		gas          = scope.Contract.Gas
 	)
 	if interpreter.evm.chainRules.IsEIP150 {
 		gas -= gas / 64
@@ -598,8 +605,8 @@ func opCreate(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]
 	// reuse size int for stackvalue
 	stackvalue := size
 
-	callContext.contract.UseGas(gas)
-	res, addr, returnGas, suberr := interpreter.evm.Create(callContext.contract, input, gas, value.ToBig())
+	scope.Contract.UseGas(gas)
+	res, addr, returnGas, suberr := interpreter.evm.Create(scope.Contract, input, gas, value.ToBig())
 	// Push item on the stack based on the returned error. If the ruleset is
 	// homestead we must check for CodeStoreOutOfGasError (homestead only
 	// rule) and treat as an error, if the ruleset is frontier we must
@@ -611,8 +618,8 @@ func opCreate(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]
 	} else {
 		stackvalue.SetBytes(addr.Bytes())
 	}
-	callContext.stack.push(&stackvalue)
-	callContext.contract.Gas += returnGas
+	scope.Stack.push(&stackvalue)
+	scope.Contract.Gas += returnGas
 
 	if suberr == ErrExecutionReverted {
 		interpreter.returnData = res // set REVERT data to return data buffer
@@ -622,24 +629,24 @@ func opCreate(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]
 	return nil, nil
 }
 
-func opCreate2(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opCreate2(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	if interpreter.readOnly {
 		return nil, ErrWriteProtection
 	}
 	var (
-		endowment    = callContext.stack.pop()
-		offset, size = callContext.stack.pop(), callContext.stack.pop()
-		salt         = callContext.stack.pop()
-		input        = callContext.memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
-		gas          = callContext.contract.Gas
+		endowment    = scope.Stack.pop()
+		offset, size = scope.Stack.pop(), scope.Stack.pop()
+		salt         = scope.Stack.pop()
+		input        = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
+		gas          = scope.Contract.Gas
 	)
 
 	// Apply EIP150
 	gas -= gas / 64
-	callContext.contract.UseGas(gas)
+	scope.Contract.UseGas(gas)
 	// reuse size int for stackvalue
 	stackvalue := size
-	res, addr, returnGas, suberr := interpreter.evm.Create2(callContext.contract, input, gas,
+	res, addr, returnGas, suberr := interpreter.evm.Create2(scope.Contract, input, gas,
 		endowment.ToBig(), salt.ToBig())
 	// Push item on the stack based on the returned error.
 	if suberr != nil {
@@ -647,8 +654,8 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([
 	} else {
 		stackvalue.SetBytes(addr.Bytes())
 	}
-	callContext.stack.push(&stackvalue)
-	callContext.contract.Gas += returnGas
+	scope.Stack.push(&stackvalue)
+	scope.Contract.Gas += returnGas
 
 	if suberr == ErrExecutionReverted {
 		interpreter.returnData = res // set REVERT data to return data buffer
@@ -658,8 +665,8 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([
 	return nil, nil
 }
 
-func opCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	stack := callContext.stack
+func opCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	stack := scope.Stack
 	// Pop gas. The actual gas in interpreter.evm.callGasTemp.
 	// We can use this as a temporary value
 	temp := stack.pop()
@@ -668,7 +675,7 @@ func opCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]by
 	addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
 	toAddr := common.Address(addr.Bytes20())
 	// Get the arguments from the memory.
-	args := callContext.memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
+	args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
 
 	if interpreter.readOnly && !value.IsZero() {
 		return nil, ErrWriteProtection
@@ -676,7 +683,7 @@ func opCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]by
 	if !value.IsZero() {
 		gas += params.CallStipend
 	}
-	ret, returnGas, err := interpreter.evm.Call(callContext.contract, toAddr, args, gas, value.ToBig())
+	ret, returnGas, err := interpreter.evm.Call(scope.Contract, toAddr, args, gas, value.ToBig())
 	if err != nil {
 		temp.Clear()
 	} else {
@@ -685,17 +692,17 @@ func opCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]by
 	stack.push(&temp)
 	if err == nil || err == ErrExecutionReverted {
 		ret = common.CopyBytes(ret)
-		callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
+		scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
 	}
-	callContext.contract.Gas += returnGas
+	scope.Contract.Gas += returnGas
 
 	interpreter.returnData = ret
 	return ret, nil
 }
 
-func opCallCode(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opCallCode(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
-	stack := callContext.stack
+	stack := scope.Stack
 	// We use it as a temporary value
 	temp := stack.pop()
 	gas := interpreter.evm.callGasTemp
@@ -703,12 +710,12 @@ func opCallCode(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) (
 	addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
 	toAddr := common.Address(addr.Bytes20())
 	// Get arguments from the memory.
-	args := callContext.memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
+	args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
 
 	if !value.IsZero() {
 		gas += params.CallStipend
 	}
-	ret, returnGas, err := interpreter.evm.CallCode(callContext.contract, toAddr, args, gas, value.ToBig())
+	ret, returnGas, err := interpreter.evm.CallCode(scope.Contract, toAddr, args, gas, value.ToBig())
 	if err != nil {
 		temp.Clear()
 	} else {
@@ -717,16 +724,16 @@ func opCallCode(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) (
 	stack.push(&temp)
 	if err == nil || err == ErrExecutionReverted {
 		ret = common.CopyBytes(ret)
-		callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
+		scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
 	}
-	callContext.contract.Gas += returnGas
+	scope.Contract.Gas += returnGas
 
 	interpreter.returnData = ret
 	return ret, nil
 }
 
-func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	stack := callContext.stack
+func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	stack := scope.Stack
 	// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
 	// We use it as a temporary value
 	temp := stack.pop()
@@ -735,9 +742,9 @@ func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCt
 	addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
 	toAddr := common.Address(addr.Bytes20())
 	// Get arguments from the memory.
-	args := callContext.memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
+	args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
 
-	ret, returnGas, err := interpreter.evm.DelegateCall(callContext.contract, toAddr, args, gas)
+	ret, returnGas, err := interpreter.evm.DelegateCall(scope.Contract, toAddr, args, gas)
 	if err != nil {
 		temp.Clear()
 	} else {
@@ -746,17 +753,17 @@ func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCt
 	stack.push(&temp)
 	if err == nil || err == ErrExecutionReverted {
 		ret = common.CopyBytes(ret)
-		callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
+		scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
 	}
-	callContext.contract.Gas += returnGas
+	scope.Contract.Gas += returnGas
 
 	interpreter.returnData = ret
 	return ret, nil
 }
 
-func opStaticCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opStaticCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
-	stack := callContext.stack
+	stack := scope.Stack
 	// We use it as a temporary value
 	temp := stack.pop()
 	gas := interpreter.evm.callGasTemp
@@ -764,9 +771,9 @@ func opStaticCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx)
 	addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
 	toAddr := common.Address(addr.Bytes20())
 	// Get arguments from the memory.
-	args := callContext.memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
+	args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
 
-	ret, returnGas, err := interpreter.evm.StaticCall(callContext.contract, toAddr, args, gas)
+	ret, returnGas, err := interpreter.evm.StaticCall(scope.Contract, toAddr, args, gas)
 	if err != nil {
 		temp.Clear()
 	} else {
@@ -775,45 +782,45 @@ func opStaticCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx)
 	stack.push(&temp)
 	if err == nil || err == ErrExecutionReverted {
 		ret = common.CopyBytes(ret)
-		callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
+		scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
 	}
-	callContext.contract.Gas += returnGas
+	scope.Contract.Gas += returnGas
 
 	interpreter.returnData = ret
 	return ret, nil
 }
 
-func opReturn(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	offset, size := callContext.stack.pop(), callContext.stack.pop()
-	ret := callContext.memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
+func opReturn(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	offset, size := scope.Stack.pop(), scope.Stack.pop()
+	ret := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
 
 	return ret, errStopToken
 }
 
-func opRevert(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	offset, size := callContext.stack.pop(), callContext.stack.pop()
-	ret := callContext.memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
+func opRevert(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	offset, size := scope.Stack.pop(), scope.Stack.pop()
+	ret := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
 
 	interpreter.returnData = ret
 	return ret, ErrExecutionReverted
 }
 
-func opUndefined(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-	return nil, &ErrInvalidOpCode{opcode: OpCode(callContext.contract.Code[*pc])}
+func opUndefined(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+	return nil, &ErrInvalidOpCode{opcode: OpCode(scope.Contract.Code[*pc])}
 }
 
-func opStop(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opStop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	return nil, errStopToken
 }
 
-func opSelfdestruct(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opSelfdestruct(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	if interpreter.readOnly {
 		return nil, ErrWriteProtection
 	}
-	beneficiary := callContext.stack.pop()
-	balance := interpreter.evm.StateDB.GetBalance(callContext.contract.Address())
+	beneficiary := scope.Stack.pop()
+	balance := interpreter.evm.StateDB.GetBalance(scope.Contract.Address())
 	interpreter.evm.StateDB.AddBalance(common.Address(beneficiary.Bytes20()), balance)
-	interpreter.evm.StateDB.Suicide(callContext.contract.Address())
+	interpreter.evm.StateDB.Suicide(scope.Contract.Address())
 	return nil, errStopToken
 }
 
@@ -821,21 +828,21 @@ func opSelfdestruct(pc *uint64, interpreter *EVMInterpreter, callContext *callCt
 
 // make log instruction function
 func makeLog(size int) executionFunc {
-	return func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+	return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 		if interpreter.readOnly {
 			return nil, ErrWriteProtection
 		}
 		topics := make([]common.Hash, size)
-		stack := callContext.stack
+		stack := scope.Stack
 		mStart, mSize := stack.pop(), stack.pop()
 		for i := 0; i < size; i++ {
 			addr := stack.pop()
 			topics[i] = common.Hash(addr.Bytes32())
 		}
 
-		d := callContext.memory.GetCopy(int64(mStart.Uint64()), int64(mSize.Uint64()))
+		d := scope.Memory.GetCopy(int64(mStart.Uint64()), int64(mSize.Uint64()))
 		interpreter.evm.StateDB.AddLog(&types.Log{
-			Address: callContext.contract.Address(),
+			Address: scope.Contract.Address(),
 			Topics:  topics,
 			Data:    d,
 			// This is a non-consensus field, but assigned here because
@@ -848,24 +855,24 @@ func makeLog(size int) executionFunc {
 }
 
 // opPush1 is a specialized version of pushN
-func opPush1(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
+func opPush1(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	var (
-		codeLen = uint64(len(callContext.contract.Code))
+		codeLen = uint64(len(scope.Contract.Code))
 		integer = new(uint256.Int)
 	)
 	*pc += 1
 	if *pc < codeLen {
-		callContext.stack.push(integer.SetUint64(uint64(callContext.contract.Code[*pc])))
+		scope.Stack.push(integer.SetUint64(uint64(scope.Contract.Code[*pc])))
 	} else {
-		callContext.stack.push(integer.Clear())
+		scope.Stack.push(integer.Clear())
 	}
 	return nil, nil
 }
 
 // make push instruction function
 func makePush(size uint64, pushByteSize int) executionFunc {
-	return func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-		codeLen := len(callContext.contract.Code)
+	return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+		codeLen := len(scope.Contract.Code)
 
 		startMin := codeLen
 		if int(*pc+1) < startMin {
@@ -878,8 +885,8 @@ func makePush(size uint64, pushByteSize int) executionFunc {
 		}
 
 		integer := new(uint256.Int)
-		callContext.stack.push(integer.SetBytes(common.RightPadBytes(
-			callContext.contract.Code[startMin:endMin], pushByteSize)))
+		scope.Stack.push(integer.SetBytes(common.RightPadBytes(
+			scope.Contract.Code[startMin:endMin], pushByteSize)))
 
 		*pc += size
 		return nil, nil
@@ -888,8 +895,8 @@ func makePush(size uint64, pushByteSize int) executionFunc {
 
 // make dup instruction function
 func makeDup(size int64) executionFunc {
-	return func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-		callContext.stack.dup(int(size))
+	return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+		scope.Stack.dup(int(size))
 		return nil, nil
 	}
 }
@@ -898,8 +905,8 @@ func makeDup(size int64) executionFunc {
 func makeSwap(size int64) executionFunc {
 	// switch n + 1 otherwise n would be swapped with n
 	size++
-	return func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
-		callContext.stack.swap(int(size))
+	return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
+		scope.Stack.swap(int(size))
 		return nil, nil
 	}
 }

core/vm/instructions_test.go

@@ -107,7 +107,7 @@ func testTwoOperandOp(t *testing.T, tests []TwoOperandTestcase, opFn executionFu
 		expected := new(uint256.Int).SetBytes(common.Hex2Bytes(test.Expected))
 		stack.push(x)
 		stack.push(y)
-		opFn(&pc, evmInterpreter, &callCtx{nil, stack, nil})
+		opFn(&pc, evmInterpreter, &ScopeContext{nil, stack, nil})
 		if len(stack.data) != 1 {
 			t.Errorf("Expected one item on stack after %v, got %d: ", name, len(stack.data))
 		}
@@ -222,7 +222,7 @@ func TestAddMod(t *testing.T) {
 		stack.push(z)
 		stack.push(y)
 		stack.push(x)
-		opAddmod(&pc, evmInterpreter, &callCtx{nil, stack, nil})
+		opAddmod(&pc, evmInterpreter, &ScopeContext{nil, stack, nil})
 		actual := stack.pop()
 		if actual.Cmp(expected) != 0 {
 			t.Errorf("Testcase %d, expected  %x, got %x", i, expected, actual)
@@ -244,7 +244,7 @@ func getResult(args []*twoOperandParams, opFn executionFunc) []TwoOperandTestcas
 		y := new(uint256.Int).SetBytes(common.Hex2Bytes(param.y))
 		stack.push(x)
 		stack.push(y)
-		_, err := opFn(&pc, interpreter, &callCtx{nil, stack, nil})
+		_, err := opFn(&pc, interpreter, &ScopeContext{nil, stack, nil})
 		if err != nil {
 			log.Fatalln(err)
 		}
@@ -308,7 +308,7 @@ func opBenchmark(bench *testing.B, op executionFunc, args ...string) {
 			a.SetBytes(arg)
 			stack.push(a)
 		}
-		op(&pc, evmInterpreter, &callCtx{nil, stack, nil})
+		op(&pc, evmInterpreter, &ScopeContext{nil, stack, nil})
 		stack.pop()
 	}
 }
@@ -535,13 +535,13 @@ func TestOpMstore(t *testing.T) {
 	v := "abcdef00000000000000abba000000000deaf000000c0de00100000000133700"
 	stack.push(new(uint256.Int).SetBytes(common.Hex2Bytes(v)))
 	stack.push(new(uint256.Int))
-	opMstore(&pc, evmInterpreter, &callCtx{mem, stack, nil})
+	opMstore(&pc, evmInterpreter, &ScopeContext{mem, stack, nil})
 	if got := common.Bytes2Hex(mem.GetCopy(0, 32)); got != v {
 		t.Fatalf("Mstore fail, got %v, expected %v", got, v)
 	}
 	stack.push(new(uint256.Int).SetUint64(0x1))
 	stack.push(new(uint256.Int))
-	opMstore(&pc, evmInterpreter, &callCtx{mem, stack, nil})
+	opMstore(&pc, evmInterpreter, &ScopeContext{mem, stack, nil})
 	if common.Bytes2Hex(mem.GetCopy(0, 32)) != "0000000000000000000000000000000000000000000000000000000000000001" {
 		t.Fatalf("Mstore failed to overwrite previous value")
 	}
@@ -565,7 +565,7 @@ func BenchmarkOpMstore(bench *testing.B) {
 	for i := 0; i < bench.N; i++ {
 		stack.push(value)
 		stack.push(memStart)
-		opMstore(&pc, evmInterpreter, &callCtx{mem, stack, nil})
+		opMstore(&pc, evmInterpreter, &ScopeContext{mem, stack, nil})
 	}
 }
 
@@ -585,7 +585,7 @@ func BenchmarkOpKeccak256(bench *testing.B) {
 	for i := 0; i < bench.N; i++ {
 		stack.push(uint256.NewInt(32))
 		stack.push(start)
-		opKeccak256(&pc, evmInterpreter, &callCtx{mem, stack, nil})
+		opKeccak256(&pc, evmInterpreter, &ScopeContext{mem, stack, nil})
 	}
 }
 
@@ -681,7 +681,7 @@ func TestRandom(t *testing.T) {
 			pc             = uint64(0)
 			evmInterpreter = NewEVMInterpreter(env, env.vmConfig)
 		)
-		opRandom(&pc, evmInterpreter, &callCtx{nil, stack, nil})
+		opRandom(&pc, evmInterpreter, &ScopeContext{nil, stack, nil})
 		if len(stack.data) != 1 {
 			t.Errorf("Expected one item on stack after %v, got %d: ", tt.name, len(stack.data))
 		}

core/vm/interface.go

@@ -57,6 +57,16 @@ type StateDB interface {
 	// is defined according to EIP161 (balance = nonce = code = 0).
 	Empty(common.Address) bool
 
+	PrepareAccessList(sender common.Address, dest *common.Address, precompiles []common.Address, txAccesses types.AccessList)
+	AddressInAccessList(addr common.Address) bool
+	SlotInAccessList(addr common.Address, slot common.Hash) (addressOk bool, slotOk bool)
+	// AddAddressToAccessList adds the given address to the access list. This operation is safe to perform
+	// even if the feature/fork is not active yet
+	AddAddressToAccessList(addr common.Address)
+	// AddSlotToAccessList adds the given (address,slot) to the access list. This operation is safe to perform
+	// even if the feature/fork is not active yet
+	AddSlotToAccessList(addr common.Address, slot common.Hash)
+
 	RevertToSnapshot(int)
 	Snapshot() int
 

core/vm/interpreter.go

@@ -60,12 +60,12 @@ type Interpreter interface {
 	CanRun([]byte) bool
 }
 
-// callCtx contains the things that are per-call, such as stack and memory,
+// ScopeContext contains the things that are per-call, such as stack and memory,
 // but not transients like pc and gas
-type callCtx struct {
-	memory   *Memory
-	stack    *Stack
-	contract *Contract
+type ScopeContext struct {
+	Memory   *Memory
+	Stack    *Stack
+	Contract *Contract
 }
 
 // keccakState wraps sha3.state. In addition to the usual hash methods, it also supports
@@ -93,6 +93,8 @@ func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter {
 	// If jump table was not initialised we set the default one.
 	if cfg.JumpTable == nil {
 		switch {
+		case evm.chainRules.IsEIP1559:
+			cfg.JumpTable = &eip1559InstructionSet
 		case evm.chainRules.IsShanghai:
 			cfg.JumpTable = &shanghaiInstructionSet
 		case evm.chainRules.IsMerge:
@@ -168,10 +170,10 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 		op          OpCode        // current opcode
 		mem         = NewMemory() // bound memory
 		stack       = newstack()  // local stack
-		callContext = &callCtx{
-			memory:   mem,
-			stack:    stack,
-			contract: contract,
+		callContext = &ScopeContext{
+			Memory:   mem,
+			Stack:    stack,
+			Contract: contract,
 		}
 		// For optimisation reason we're using uint64 as the program counter.
 		// It's theoretically possible to go above 2^64. The YP defines the PC
@@ -190,9 +192,9 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 		defer func() {
 			if err != nil {
 				if !logged {
-					in.cfg.Tracer.CaptureState(in.evm, pcCopy, op, gasCopy, cost, mem, stack, contract, in.evm.depth, err)
+					in.cfg.Tracer.CaptureState(in.evm, pcCopy, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err)
 				} else {
-					in.cfg.Tracer.CaptureFault(in.evm, pcCopy, op, gasCopy, cost, mem, stack, contract, in.evm.depth, err)
+					in.cfg.Tracer.CaptureFault(in.evm, pcCopy, op, gasCopy, cost, callContext, in.evm.depth, err)
 				}
 			}
 		}()
@@ -255,7 +257,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
 		}
 
 		if in.cfg.Debug {
-			in.cfg.Tracer.CaptureState(in.evm, pc, op, gasCopy, cost, mem, stack, contract, in.evm.depth, err)
+			in.cfg.Tracer.CaptureState(in.evm, pc, op, gasCopy, cost, callContext, in.returnData, in.evm.depth, err)
 			logged = true
 		}
 

core/vm/jump_table.go

@@ -21,7 +21,7 @@ import (
 )
 
 type (
-	executionFunc func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error)
+	executionFunc func(pc *uint64, interpreter *EVMInterpreter, callContext *ScopeContext) ([]byte, error)
 	gasFunc       func(*EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64
 	// memorySizeFunc returns the required size, and whether the operation overflowed a uint64
 	memorySizeFunc func(*Stack) (size uint64, overflow bool)
@@ -54,11 +54,18 @@ var (
 	londonInstructionSet           = newLondonInstructionSet()
 	mergeInstructionSet            = newMergeInstructionSet()
 	shanghaiInstructionSet         = newShanghaiInstructionSet()
+	eip1559InstructionSet          = newEip1559InstructionSet()
 )
 
 // JumpTable contains the EVM opcodes supported at a given fork.
 type JumpTable [256]*operation
 
+func newEip1559InstructionSet() JumpTable {
+	instructionSet := newShanghaiInstructionSet()
+	enable2929(&instructionSet) // Gas cost increases for state access opcodes https://eips.ethereum.org/EIPS/eip-2929
+	return instructionSet
+}
+
 func newShanghaiInstructionSet() JumpTable {
 	instructionSet := newMergeInstructionSet()
 	enable3855(&instructionSet) // PUSH0 instruction

core/vm/logger.go

@@ -18,20 +18,19 @@ package vm
 
 import (
 	"encoding/hex"
-	"errors"
 	"fmt"
 	"io"
 	"math/big"
+	"strings"
 	"time"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
 	"github.com/XinFinOrg/XDPoSChain/common/hexutil"
 	"github.com/XinFinOrg/XDPoSChain/common/math"
 	"github.com/XinFinOrg/XDPoSChain/core/types"
+	"github.com/XinFinOrg/XDPoSChain/params"
 )
 
-var errTraceLimitReached = errors.New("the number of logs reached the specified limit")
-
 // Storage represents a contract's storage.
 type Storage map[common.Hash]common.Hash
 
@@ -52,6 +51,9 @@ type LogConfig struct {
 	DisableStorage bool // disable storage capture
 	Debug          bool // print output during capture end
 	Limit          int  // maximum length of output, but zero means unlimited
+
+	// Chain overrides, can be used to execute a trace using future fork rules
+	Overrides *params.ChainConfig `json:"overrides,omitempty"`
 }
 
 //go:generate gencodec -type StructLog -field-override structLogMarshaling -out gen_structlog.go
@@ -101,10 +103,10 @@ func (s *StructLog) ErrorString() string {
 // Note that reference types are actual VM data structures; make copies
 // if you need to retain them beyond the current call.
 type Tracer interface {
-	CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) error
-	CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error
-	CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error
-	CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error
+	CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int)
+	CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error)
+	CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error)
+	CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error)
 }
 
 // StructLogger is an EVM state logger and implements Tracer.
@@ -133,17 +135,19 @@ func NewStructLogger(cfg *LogConfig) *StructLogger {
 }
 
 // CaptureStart implements the Tracer interface to initialize the tracing operation.
-func (l *StructLogger) CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) error {
-	return nil
+func (l *StructLogger) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
 }
 
 // CaptureState logs a new structured log message and pushes it out to the environment
 //
-// CaptureState also tracks SSTORE ops to track dirty values.
-func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
+// CaptureState also tracks SLOAD/SSTORE ops to track storage change.
+func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) {
+	memory := scope.Memory
+	stack := scope.Stack
+	contract := scope.Contract
 	// check if already accumulated the specified number of logs
 	if l.cfg.Limit != 0 && l.cfg.Limit <= len(l.logs) {
-		return errTraceLimitReached
+		return
 	}
 
 	// initialise new changed values storage container for this contract
@@ -184,17 +188,15 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui
 	log := StructLog{pc, op, gas, cost, mem, memory.Len(), stck, storage, depth, env.StateDB.GetRefund(), err}
 
 	l.logs = append(l.logs, log)
-	return nil
 }
 
 // CaptureFault implements the Tracer interface to trace an execution fault
 // while running an opcode.
-func (l *StructLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
-	return nil
+func (l *StructLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) {
 }
 
 // CaptureEnd is called after the call finishes to finalize the tracing.
-func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error {
+func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {
 	l.output = output
 	l.err = err
 	if l.cfg.Debug {
@@ -203,7 +205,6 @@ func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration
 			fmt.Printf(" error: %v\n", err)
 		}
 	}
-	return nil
 }
 
 // StructLogs returns the captured log entries.
@@ -257,3 +258,65 @@ func WriteLogs(writer io.Writer, logs []*types.Log) {
 		fmt.Fprintln(writer)
 	}
 }
+
+type mdLogger struct {
+	out io.Writer
+	cfg *LogConfig
+}
+
+// NewMarkdownLogger creates a logger which outputs information in a format adapted
+// for human readability, and is also a valid markdown table
+func NewMarkdownLogger(cfg *LogConfig, writer io.Writer) *mdLogger {
+	l := &mdLogger{writer, cfg}
+	if l.cfg == nil {
+		l.cfg = &LogConfig{}
+	}
+	return l
+}
+
+func (t *mdLogger) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+	if !create {
+		fmt.Fprintf(t.out, "From: `%v`\nTo: `%v`\nData: `0x%x`\nGas: `%d`\nValue `%v` wei\n",
+			from.String(), to.String(),
+			input, gas, value)
+	} else {
+		fmt.Fprintf(t.out, "From: `%v`\nCreate at: `%v`\nData: `0x%x`\nGas: `%d`\nValue `%v` wei\n",
+			from.String(), to.String(),
+			input, gas, value)
+	}
+
+	fmt.Fprintf(t.out, `
+|  Pc   |      Op     | Cost |   Stack   |   RStack  |  Refund |
+|-------|-------------|------|-----------|-----------|---------|
+`)
+}
+
+// CaptureState also tracks SLOAD/SSTORE ops to track storage change.
+func (t *mdLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) {
+	stack := scope.Stack
+	fmt.Fprintf(t.out, "| %4d  | %10v  |  %3d |", pc, op, cost)
+
+	if !t.cfg.DisableStack {
+		// format stack
+		var a []string
+		for _, elem := range stack.data {
+			a = append(a, fmt.Sprintf("%v", elem.String()))
+		}
+		b := fmt.Sprintf("[%v]", strings.Join(a, ","))
+		fmt.Fprintf(t.out, "%10v |", b)
+	}
+	fmt.Fprintf(t.out, "%10v |", env.StateDB.GetRefund())
+	fmt.Fprintln(t.out, "")
+	if err != nil {
+		fmt.Fprintf(t.out, "Error: %v\n", err)
+	}
+}
+
+func (t *mdLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) {
+	fmt.Fprintf(t.out, "\nError: at pc=%d, op=%v: %v\n", pc, op, err)
+}
+
+func (t *mdLogger) CaptureEnd(output []byte, gasUsed uint64, tm time.Duration, err error) {
+	fmt.Fprintf(t.out, "\nOutput: `0x%x`\nConsumed gas: `%d`\nError: `%v`\n",
+		output, gasUsed, err)
+}

core/vm/logger_json.go

@@ -41,12 +41,16 @@ func NewJSONLogger(cfg *LogConfig, writer io.Writer) *JSONLogger {
 	return l
 }
 
-func (l *JSONLogger) CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) error {
-	return nil
+func (l *JSONLogger) CaptureStart(env *EVM, from, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
 }
 
+func (l *JSONLogger) CaptureFault(*EVM, uint64, OpCode, uint64, uint64, *ScopeContext, int, error) {}
+
 // CaptureState outputs state information on the logger.
-func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
+func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) {
+	memory := scope.Memory
+	stack := scope.Stack
+
 	log := StructLog{
 		Pc:            pc,
 		Op:            op,
@@ -69,16 +73,11 @@ func (l *JSONLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint
 		}
 		log.Stack = logstack
 	}
-	return l.encoder.Encode(log)
-}
-
-// CaptureFault outputs state information on the logger.
-func (l *JSONLogger) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error {
-	return l.CaptureState(env, pc, op, gas, cost, memory, stack, contract, depth, err)
+	l.encoder.Encode(log)
 }
 
 // CaptureEnd is triggered at end of execution.
-func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error {
+func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {
 	type endLog struct {
 		Output  string              `json:"output"`
 		GasUsed math.HexOrDecimal64 `json:"gasUsed"`
@@ -89,5 +88,5 @@ func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration,
 	if err != nil {
 		errMsg = err.Error()
 	}
-	return l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, errMsg})
+	l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, errMsg})
 }

core/vm/logger_test.go

@@ -52,14 +52,17 @@ func TestStoreCapture(t *testing.T) {
 	var (
 		env      = NewEVM(Context{}, &dummyStatedb{}, nil, params.TestChainConfig, Config{})
 		logger   = NewStructLogger(nil)
-		mem      = NewMemory()
-		stack    = newstack()
 		contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0)
+		scope    = &ScopeContext{
+			Memory:   NewMemory(),
+			Stack:    newstack(),
+			Contract: contract,
+		}
 	)
-	stack.push(uint256.NewInt(1))
-	stack.push(new(uint256.Int))
+	scope.Stack.push(uint256.NewInt(1))
+	scope.Stack.push(new(uint256.Int))
 	var index common.Hash
-	logger.CaptureState(env, 0, SSTORE, 0, 0, mem, stack, contract, 0, nil)
+	logger.CaptureState(env, 0, SSTORE, 0, 0, scope, nil, 0, nil)
 	if len(logger.changedValues[contract.Address()]) == 0 {
 		t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.changedValues[contract.Address()]))
 	}

core/vm/operations_acl.go

@@ -0,0 +1,221 @@
+// Copyright 2020 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vm
+
+import (
+	"errors"
+
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/common/math"
+	"github.com/XinFinOrg/XDPoSChain/params"
+)
+
+const (
+	ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST
+	ColdSloadCostEIP2929         = uint64(2100) // COLD_SLOAD_COST
+	WarmStorageReadCostEIP2929   = uint64(100)  // WARM_STORAGE_READ_COST
+)
+
+// gasSStoreEIP2929 implements gas cost for SSTORE according to EIP-2929"
+//
+// When calling SSTORE, check if the (address, storage_key) pair is in accessed_storage_keys.
+// If it is not, charge an additional COLD_SLOAD_COST gas, and add the pair to accessed_storage_keys.
+// Additionally, modify the parameters defined in EIP 2200 as follows:
+//
+// Parameter 	Old value 	New value
+// SLOAD_GAS 	800 	= WARM_STORAGE_READ_COST
+// SSTORE_RESET_GAS 	5000 	5000 - COLD_SLOAD_COST
+//
+// The other parameters defined in EIP 2200 are unchanged.
+// see gasSStoreEIP2200(...) in core/vm/gas_table.go for more info about how EIP 2200 is specified
+func gasSStoreEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	// If we fail the minimum gas availability invariant, fail (0)
+	if contract.Gas <= params.SstoreSentryGasEIP2200 {
+		return 0, errors.New("not enough gas for reentrancy sentry")
+	}
+	// Gas sentry honoured, do the actual gas calculation based on the stored value
+	var (
+		y, x    = stack.Back(1), stack.peek()
+		slot    = common.Hash(x.Bytes32())
+		current = evm.StateDB.GetState(contract.Address(), slot)
+		cost    = uint64(0)
+	)
+	// Check slot presence in the access list
+	if addrPresent, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent {
+		cost = ColdSloadCostEIP2929
+		// If the caller cannot afford the cost, this change will be rolled back
+		evm.StateDB.AddSlotToAccessList(contract.Address(), slot)
+		if !addrPresent {
+			// Once we're done with YOLOv2 and schedule this for mainnet, might
+			// be good to remove this panic here, which is just really a
+			// canary to have during testing
+			panic("impossible case: address was not present in access list during sstore op")
+		}
+	}
+	value := common.Hash(y.Bytes32())
+
+	if current == value { // noop (1)
+		// EIP 2200 original clause:
+		//		return params.SloadGasEIP2200, nil
+		return cost + WarmStorageReadCostEIP2929, nil // SLOAD_GAS
+	}
+	original := evm.StateDB.GetCommittedState(contract.Address(), common.Hash(x.Bytes32()))
+	if original == current {
+		if original == (common.Hash{}) { // create slot (2.1.1)
+			return cost + params.SstoreSetGasEIP2200, nil
+		}
+		if value == (common.Hash{}) { // delete slot (2.1.2b)
+			evm.StateDB.AddRefund(params.SstoreClearsScheduleRefundEIP2200)
+		}
+		// EIP-2200 original clause:
+		//		return params.SstoreResetGasEIP2200, nil // write existing slot (2.1.2)
+		return cost + (params.SstoreResetGasEIP2200 - ColdSloadCostEIP2929), nil // write existing slot (2.1.2)
+	}
+	if original != (common.Hash{}) {
+		if current == (common.Hash{}) { // recreate slot (2.2.1.1)
+			evm.StateDB.SubRefund(params.SstoreClearsScheduleRefundEIP2200)
+		} else if value == (common.Hash{}) { // delete slot (2.2.1.2)
+			evm.StateDB.AddRefund(params.SstoreClearsScheduleRefundEIP2200)
+		}
+	}
+	if original == value {
+		if original == (common.Hash{}) { // reset to original inexistent slot (2.2.2.1)
+			// EIP 2200 Original clause:
+			//evm.StateDB.AddRefund(params.SstoreSetGasEIP2200 - params.SloadGasEIP2200)
+			evm.StateDB.AddRefund(params.SstoreSetGasEIP2200 - WarmStorageReadCostEIP2929)
+		} else { // reset to original existing slot (2.2.2.2)
+			// EIP 2200 Original clause:
+			//	evm.StateDB.AddRefund(params.SstoreResetGasEIP2200 - params.SloadGasEIP2200)
+			// - SSTORE_RESET_GAS redefined as (5000 - COLD_SLOAD_COST)
+			// - SLOAD_GAS redefined as WARM_STORAGE_READ_COST
+			// Final: (5000 - COLD_SLOAD_COST) - WARM_STORAGE_READ_COST
+			evm.StateDB.AddRefund((params.SstoreResetGasEIP2200 - ColdSloadCostEIP2929) - WarmStorageReadCostEIP2929)
+		}
+	}
+	// EIP-2200 original clause:
+	//return params.SloadGasEIP2200, nil // dirty update (2.2)
+	return cost + WarmStorageReadCostEIP2929, nil // dirty update (2.2)
+}
+
+// gasSLoadEIP2929 calculates dynamic gas for SLOAD according to EIP-2929
+// For SLOAD, if the (address, storage_key) pair (where address is the address of the contract
+// whose storage is being read) is not yet in accessed_storage_keys,
+// charge 2100 gas and add the pair to accessed_storage_keys.
+// If the pair is already in accessed_storage_keys, charge 100 gas.
+func gasSLoadEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	loc := stack.peek()
+	slot := common.Hash(loc.Bytes32())
+	// Check slot presence in the access list
+	if _, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent {
+		// If the caller cannot afford the cost, this change will be rolled back
+		// If he does afford it, we can skip checking the same thing later on, during execution
+		evm.StateDB.AddSlotToAccessList(contract.Address(), slot)
+		return ColdSloadCostEIP2929, nil
+	}
+	return WarmStorageReadCostEIP2929, nil
+}
+
+// gasExtCodeCopyEIP2929 implements extcodecopy according to EIP-2929
+// EIP spec:
+// > If the target is not in accessed_addresses,
+// > charge COLD_ACCOUNT_ACCESS_COST gas, and add the address to accessed_addresses.
+// > Otherwise, charge WARM_STORAGE_READ_COST gas.
+func gasExtCodeCopyEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	// memory expansion first (dynamic part of pre-2929 implementation)
+	gas, err := gasExtCodeCopy(evm, contract, stack, mem, memorySize)
+	if err != nil {
+		return 0, err
+	}
+	addr := common.Address(stack.peek().Bytes20())
+	// Check slot presence in the access list
+	if !evm.StateDB.AddressInAccessList(addr) {
+		evm.StateDB.AddAddressToAccessList(addr)
+		var overflow bool
+		// We charge (cold-warm), since 'warm' is already charged as constantGas
+		if gas, overflow = math.SafeAdd(gas, ColdAccountAccessCostEIP2929-WarmStorageReadCostEIP2929); overflow {
+			return 0, ErrGasUintOverflow
+		}
+		return gas, nil
+	}
+	return gas, nil
+}
+
+// gasEip2929AccountCheck checks whether the first stack item (as address) is present in the access list.
+// If it is, this method returns '0', otherwise 'cold-warm' gas, presuming that the opcode using it
+// is also using 'warm' as constant factor.
+// This method is used by:
+// - extcodehash,
+// - extcodesize,
+// - (ext) balance
+func gasEip2929AccountCheck(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	addr := common.Address(stack.peek().Bytes20())
+	// Check slot presence in the access list
+	if !evm.StateDB.AddressInAccessList(addr) {
+		// If the caller cannot afford the cost, this change will be rolled back
+		evm.StateDB.AddAddressToAccessList(addr)
+		// The warm storage read cost is already charged as constantGas
+		return ColdAccountAccessCostEIP2929 - WarmStorageReadCostEIP2929, nil
+	}
+	return 0, nil
+}
+
+func makeCallVariantGasCallEIP2929(oldCalculator gasFunc) gasFunc {
+	return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+		addr := common.Address(stack.Back(1).Bytes20())
+		// Check slot presence in the access list
+		if !evm.StateDB.AddressInAccessList(addr) {
+			evm.StateDB.AddAddressToAccessList(addr)
+			// The WarmStorageReadCostEIP2929 (100) is already deducted in the form of a constant cost
+			if !contract.UseGas(ColdAccountAccessCostEIP2929 - WarmStorageReadCostEIP2929) {
+				return 0, ErrOutOfGas
+			}
+		}
+		// Now call the old calculator, which takes into account
+		// - create new account
+		// - transfer value
+		// - memory expansion
+		// - 63/64ths rule
+		return oldCalculator(evm, contract, stack, mem, memorySize)
+	}
+}
+
+var (
+	gasCallEIP2929         = makeCallVariantGasCallEIP2929(gasCall)
+	gasDelegateCallEIP2929 = makeCallVariantGasCallEIP2929(gasDelegateCall)
+	gasStaticCallEIP2929   = makeCallVariantGasCallEIP2929(gasStaticCall)
+	gasCallCodeEIP2929     = makeCallVariantGasCallEIP2929(gasCallCode)
+)
+
+func gasSelfdestructEIP2929(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
+	var (
+		gas     uint64
+		address = common.Address(stack.peek().Bytes20())
+	)
+	if !evm.StateDB.AddressInAccessList(address) {
+		// If the caller cannot afford the cost, this change will be rolled back
+		evm.StateDB.AddAddressToAccessList(address)
+		gas = ColdAccountAccessCostEIP2929
+	}
+	// if empty and transfers value
+	if evm.StateDB.Empty(address) && evm.StateDB.GetBalance(contract.Address()).Sign() != 0 {
+		gas += params.CreateBySelfdestructGas
+	}
+	if !evm.StateDB.HasSuicided(contract.Address()) {
+		evm.StateDB.AddRefund(params.SelfdestructRefundGas)
+	}
+	return gas, nil
+}

core/vm/runtime/runtime.go

@@ -17,12 +17,12 @@
 package runtime
 
 import (
-	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"math"
 	"math/big"
 	"time"
 
 	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/core/rawdb"
 	"github.com/XinFinOrg/XDPoSChain/core/state"
 	"github.com/XinFinOrg/XDPoSChain/core/vm"
 	"github.com/XinFinOrg/XDPoSChain/crypto"
@@ -107,6 +107,9 @@ func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
 		vmenv   = NewEnv(cfg)
 		sender  = vm.AccountRef(cfg.Origin)
 	)
+	if rules := cfg.ChainConfig.Rules(vmenv.Context.BlockNumber); rules.IsEIP1559 {
+		cfg.State.PrepareAccessList(cfg.Origin, &address, vm.ActivePrecompiles(rules), nil)
+	}
 	cfg.State.CreateAccount(address)
 	// set the receiver's (the executing contract) code for execution.
 	cfg.State.SetCode(address, code)
@@ -137,7 +140,9 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
 		vmenv  = NewEnv(cfg)
 		sender = vm.AccountRef(cfg.Origin)
 	)
-
+	if rules := cfg.ChainConfig.Rules(vmenv.Context.BlockNumber); rules.IsEIP1559 {
+		cfg.State.PrepareAccessList(cfg.Origin, nil, vm.ActivePrecompiles(rules), nil)
+	}
 	// Call the code with the given configuration.
 	code, address, leftOverGas, err := vmenv.Create(
 		sender,
@@ -159,6 +164,11 @@ func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, er
 	vmenv := NewEnv(cfg)
 
 	sender := cfg.State.GetOrNewStateObject(cfg.Origin)
+	statedb := cfg.State
+	if rules := cfg.ChainConfig.Rules(vmenv.Context.BlockNumber); rules.IsEIP1559 {
+		statedb.PrepareAccessList(cfg.Origin, &address, vm.ActivePrecompiles(rules), nil)
+	}
+
 	// Call the code with the given configuration.
 	ret, leftOverGas, err := vmenv.Call(
 		sender,
@@ -167,6 +177,5 @@ func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, er
 		cfg.GasLimit,
 		cfg.Value,
 	)
-
 	return ret, leftOverGas, err
 }