feat: support stateful precompiled contracts

app/ante/eth.go

@@ -31,6 +31,7 @@ import (
  evmtypes "github.com/evmos/ethermint/x/evm/types"
 
  "github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/core"
  ethtypes "github.com/ethereum/go-ethereum/core/types"
 )
 
@@ -294,20 +295,10 @@ func (ctd CanTransferDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate
  }
  }
 
- // NOTE: pass in an empty coinbase address and nil tracer as we don't need them for the check below
- cfg := &statedb.EVMConfig{
- ChainConfig: ethCfg,
- Params: params,
- CoinBase: common.Address{},
- BaseFee: baseFee,
- }
-
- stateDB := statedb.New(ctx, ctd.evmKeeper, statedb.NewEmptyTxConfig(common.BytesToHash(ctx.HeaderHash().Bytes())))
- evm := ctd.evmKeeper.NewEVM(ctx, coreMsg, cfg, evmtypes.NewNoOpTracer(), stateDB)
-
+ stateDB := ctd.evmKeeper.StateDB(ctx, statedb.NewEmptyTxConfig(common.BytesToHash(ctx.HeaderHash().Bytes())))
  // check that caller has enough balance to cover asset transfer for **topmost** call
  // NOTE: here the gas consumed is from the context with the infinite gas meter
- if coreMsg.Value().Sign() > 0 && !evm.Context().CanTransfer(stateDB, coreMsg.From(), coreMsg.Value()) {
+ if coreMsg.Value().Sign() > 0 && !core.CanTransfer(stateDB, coreMsg.From(), coreMsg.Value()) {
  return ctx, errorsmod.Wrapf(
  errortypes.ErrInsufficientFunds,
  "failed to transfer %s from address %s using the EVM block context transfer function",

app/ante/interfaces.go

@@ -22,13 +22,10 @@ import (
  tx "github.com/cosmos/cosmos-sdk/types/tx"
 
  "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/core"
- "github.com/ethereum/go-ethereum/core/vm"
  "github.com/ethereum/go-ethereum/params"
 
  "github.com/evmos/ethermint/x/evm/statedb"
  evmtypes "github.com/evmos/ethermint/x/evm/types"
- evm "github.com/evmos/ethermint/x/evm/vm"
  feemarkettypes "github.com/evmos/ethermint/x/feemarket/types"
 )
 
@@ -44,12 +41,12 @@ type EVMKeeper interface {
  statedb.Keeper
  DynamicFeeEVMKeeper
 
- NewEVM(ctx sdk.Context, msg core.Message, cfg *statedb.EVMConfig, tracer vm.EVMLogger, stateDB vm.StateDB) evm.EVM
  DeductTxCostsFromUserBalance(ctx sdk.Context, fees sdk.Coins, from common.Address) error
  GetBalance(ctx sdk.Context, addr common.Address) *big.Int
  ResetTransientGasUsed(ctx sdk.Context)
  GetTxIndexTransient(ctx sdk.Context) uint64
  GetParams(ctx sdk.Context) evmtypes.Params
+ StateDB(ctx sdk.Context, txConfig statedb.TxConfig) *statedb.StateDB
 }
 
 type protoTxProvider interface {

app/app.go

@@ -19,6 +19,7 @@ import (
  "encoding/json"
  "fmt"
  "io"
+ "math/big"
  "net/http"
  "os"
  "path/filepath"
@@ -124,13 +125,16 @@ import (
  ethermint "github.com/evmos/ethermint/types"
  "github.com/evmos/ethermint/x/evm"
  evmkeeper "github.com/evmos/ethermint/x/evm/keeper"
+ "github.com/evmos/ethermint/x/evm/keeper/precompiles"
  evmtypes "github.com/evmos/ethermint/x/evm/types"
+ "github.com/evmos/ethermint/x/evm/vm"
  "github.com/evmos/ethermint/x/evm/vm/geth"
  "github.com/evmos/ethermint/x/feemarket"
  feemarketkeeper "github.com/evmos/ethermint/x/feemarket/keeper"
  feemarkettypes "github.com/evmos/ethermint/x/feemarket/types"
 
  // Force-load the tracer engines to trigger registration due to Go-Ethereum v1.10.15 changes
+ "github.com/ethereum/go-ethereum/common"
  _ "github.com/ethereum/go-ethereum/eth/tracers/js"
  _ "github.com/ethereum/go-ethereum/eth/tracers/native"
 )
@@ -417,13 +421,15 @@ func NewEthermintApp(
  appCodec, authtypes.NewModuleAddress(govtypes.ModuleName),
  keys[feemarkettypes.StoreKey], tkeys[feemarkettypes.TransientKey], feeMarketSs,
  )
-
+ contracts := map[common.Address]vm.PrecompiledContractCreator{
+ common.BigToAddress(big.NewInt(100)): precompiles.NewBankContractCreator(app.BankKeeper),
+ }
  // Set authority to x/gov module account to only expect the module account to update params
  evmSs := app.GetSubspace(evmtypes.ModuleName)
  app.EvmKeeper = evmkeeper.NewKeeper(
  appCodec, keys[evmtypes.StoreKey], tkeys[evmtypes.TransientKey], authtypes.NewModuleAddress(govtypes.ModuleName),
  app.AccountKeeper, app.BankKeeper, app.StakingKeeper, app.FeeMarketKeeper,
- nil, geth.NewEVM, tracer, evmSs,
+ contracts, geth.NewEVM, tracer, evmSs,
  )
 
  // Create IBC Keeper

go.mod

@@ -162,8 +162,10 @@ require (
  github.com/stretchr/objx v0.5.0 // indirect
  github.com/subosito/gotenv v1.4.2 // indirect
  github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
+ github.com/tendermint/btcd v0.1.1 // indirect
+ github.com/tendermint/crypto v0.0.0-20191022145703-50d29ede1e15 // indirect
  github.com/tendermint/go-amino v0.16.0 // indirect
- github.com/tidwall/btree v1.5.0 // indirect
+ github.com/tidwall/btree v1.6.0 // indirect
  github.com/tklauser/go-sysconf v0.3.10 // indirect
  github.com/tklauser/numcpus v0.4.0 // indirect
  github.com/ulikunitz/xz v0.5.8 // indirect
@@ -191,6 +193,8 @@ require (
 replace (
  // use cosmos keyring
  github.com/99designs/keyring => github.com/cosmos/keyring v1.1.7-0.20210622111912-ef00f8ac3d76
+ github.com/cosmos/cosmos-sdk => github.com/mmsqe/cosmos-sdk v0.46.6-0.20230110154545-70f48768ca49
+ github.com/ethereum/go-ethereum => github.com/evmos/go-ethereum v1.10.26-evmos-rc1
  // Fix upstream GHSA-h395-qcrw-5vmq vulnerability.
  // TODO Remove it: https://github.com/cosmos/cosmos-sdk/issues/10409
  github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.7.0