mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
218 lines
7.2 KiB
218 lines
7.2 KiB
// 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 runtime
|
|
|
|
import (
|
|
"math"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"github.com/holiman/uint256"
|
|
)
|
|
|
|
// Config is a basic type specifying certain configuration flags for running
|
|
// the EVM.
|
|
type Config struct {
|
|
ChainConfig *params.ChainConfig
|
|
Difficulty *big.Int
|
|
Origin common.Address
|
|
Coinbase common.Address
|
|
BlockNumber *big.Int
|
|
Time uint64
|
|
GasLimit uint64
|
|
GasPrice *big.Int
|
|
Value *big.Int
|
|
Debug bool
|
|
EVMConfig vm.Config
|
|
BaseFee *big.Int
|
|
BlobBaseFee *big.Int
|
|
BlobHashes []common.Hash
|
|
BlobFeeCap *big.Int
|
|
Random *common.Hash
|
|
|
|
State *state.StateDB
|
|
GetHashFn func(n uint64) common.Hash
|
|
}
|
|
|
|
// sets defaults on the config
|
|
func setDefaults(cfg *Config) {
|
|
if cfg.ChainConfig == nil {
|
|
var (
|
|
shanghaiTime = uint64(0)
|
|
cancunTime = uint64(0)
|
|
)
|
|
cfg.ChainConfig = ¶ms.ChainConfig{
|
|
ChainID: big.NewInt(1),
|
|
HomesteadBlock: new(big.Int),
|
|
DAOForkBlock: new(big.Int),
|
|
DAOForkSupport: false,
|
|
EIP150Block: new(big.Int),
|
|
EIP155Block: new(big.Int),
|
|
EIP158Block: new(big.Int),
|
|
ByzantiumBlock: new(big.Int),
|
|
ConstantinopleBlock: new(big.Int),
|
|
PetersburgBlock: new(big.Int),
|
|
IstanbulBlock: new(big.Int),
|
|
MuirGlacierBlock: new(big.Int),
|
|
BerlinBlock: new(big.Int),
|
|
LondonBlock: new(big.Int),
|
|
ArrowGlacierBlock: nil,
|
|
GrayGlacierBlock: nil,
|
|
TerminalTotalDifficulty: big.NewInt(0),
|
|
MergeNetsplitBlock: nil,
|
|
ShanghaiTime: &shanghaiTime,
|
|
CancunTime: &cancunTime}
|
|
}
|
|
if cfg.Difficulty == nil {
|
|
cfg.Difficulty = new(big.Int)
|
|
}
|
|
if cfg.GasLimit == 0 {
|
|
cfg.GasLimit = math.MaxUint64
|
|
}
|
|
if cfg.GasPrice == nil {
|
|
cfg.GasPrice = new(big.Int)
|
|
}
|
|
if cfg.Value == nil {
|
|
cfg.Value = new(big.Int)
|
|
}
|
|
if cfg.BlockNumber == nil {
|
|
cfg.BlockNumber = new(big.Int)
|
|
}
|
|
if cfg.GetHashFn == nil {
|
|
cfg.GetHashFn = func(n uint64) common.Hash {
|
|
return common.BytesToHash(crypto.Keccak256([]byte(new(big.Int).SetUint64(n).String())))
|
|
}
|
|
}
|
|
if cfg.BaseFee == nil {
|
|
cfg.BaseFee = big.NewInt(params.InitialBaseFee)
|
|
}
|
|
if cfg.BlobBaseFee == nil {
|
|
cfg.BlobBaseFee = big.NewInt(params.BlobTxMinBlobGasprice)
|
|
}
|
|
cfg.Random = &(common.Hash{})
|
|
}
|
|
|
|
// Execute executes the code using the input as call data during the execution.
|
|
// It returns the EVM's return value, the new state and an error if it failed.
|
|
//
|
|
// Execute sets up an in-memory, temporary, environment for the execution of
|
|
// the given code. It makes sure that it's restored to its original state afterwards.
|
|
func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
|
|
if cfg == nil {
|
|
cfg = new(Config)
|
|
}
|
|
setDefaults(cfg)
|
|
|
|
if cfg.State == nil {
|
|
cfg.State, _ = state.New(types.EmptyRootHash, state.NewDatabaseForTesting())
|
|
}
|
|
var (
|
|
address = common.BytesToAddress([]byte("contract"))
|
|
vmenv = NewEnv(cfg)
|
|
sender = vm.AccountRef(cfg.Origin)
|
|
rules = cfg.ChainConfig.Rules(vmenv.Context.BlockNumber, vmenv.Context.Random != nil, vmenv.Context.Time)
|
|
)
|
|
if cfg.EVMConfig.Tracer != nil && cfg.EVMConfig.Tracer.OnTxStart != nil {
|
|
cfg.EVMConfig.Tracer.OnTxStart(vmenv.GetVMContext(), types.NewTx(&types.LegacyTx{To: &address, Data: input, Value: cfg.Value, Gas: cfg.GasLimit}), cfg.Origin)
|
|
}
|
|
// Execute the preparatory steps for state transition which includes:
|
|
// - prepare accessList(post-berlin)
|
|
// - reset transient storage(eip 1153)
|
|
cfg.State.Prepare(rules, cfg.Origin, cfg.Coinbase, &address, vm.ActivePrecompiles(rules), nil)
|
|
cfg.State.CreateAccount(address)
|
|
// set the receiver's (the executing contract) code for execution.
|
|
cfg.State.SetCode(address, code)
|
|
// Call the code with the given configuration.
|
|
ret, _, err := vmenv.Call(
|
|
sender,
|
|
common.BytesToAddress([]byte("contract")),
|
|
input,
|
|
cfg.GasLimit,
|
|
uint256.MustFromBig(cfg.Value),
|
|
)
|
|
return ret, cfg.State, err
|
|
}
|
|
|
|
// Create executes the code using the EVM create method
|
|
func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
|
|
if cfg == nil {
|
|
cfg = new(Config)
|
|
}
|
|
setDefaults(cfg)
|
|
|
|
if cfg.State == nil {
|
|
cfg.State, _ = state.New(types.EmptyRootHash, state.NewDatabaseForTesting())
|
|
}
|
|
var (
|
|
vmenv = NewEnv(cfg)
|
|
sender = vm.AccountRef(cfg.Origin)
|
|
rules = cfg.ChainConfig.Rules(vmenv.Context.BlockNumber, vmenv.Context.Random != nil, vmenv.Context.Time)
|
|
)
|
|
if cfg.EVMConfig.Tracer != nil && cfg.EVMConfig.Tracer.OnTxStart != nil {
|
|
cfg.EVMConfig.Tracer.OnTxStart(vmenv.GetVMContext(), types.NewTx(&types.LegacyTx{Data: input, Value: cfg.Value, Gas: cfg.GasLimit}), cfg.Origin)
|
|
}
|
|
// Execute the preparatory steps for state transition which includes:
|
|
// - prepare accessList(post-berlin)
|
|
// - reset transient storage(eip 1153)
|
|
cfg.State.Prepare(rules, cfg.Origin, cfg.Coinbase, nil, vm.ActivePrecompiles(rules), nil)
|
|
// Call the code with the given configuration.
|
|
code, address, leftOverGas, err := vmenv.Create(
|
|
sender,
|
|
input,
|
|
cfg.GasLimit,
|
|
uint256.MustFromBig(cfg.Value),
|
|
)
|
|
return code, address, leftOverGas, err
|
|
}
|
|
|
|
// Call executes the code given by the contract's address. It will return the
|
|
// EVM's return value or an error if it failed.
|
|
//
|
|
// Call, unlike Execute, requires a config and also requires the State field to
|
|
// be set.
|
|
func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, error) {
|
|
setDefaults(cfg)
|
|
|
|
var (
|
|
vmenv = NewEnv(cfg)
|
|
sender = vm.AccountRef(cfg.Origin)
|
|
statedb = cfg.State
|
|
rules = cfg.ChainConfig.Rules(vmenv.Context.BlockNumber, vmenv.Context.Random != nil, vmenv.Context.Time)
|
|
)
|
|
if cfg.EVMConfig.Tracer != nil && cfg.EVMConfig.Tracer.OnTxStart != nil {
|
|
cfg.EVMConfig.Tracer.OnTxStart(vmenv.GetVMContext(), types.NewTx(&types.LegacyTx{To: &address, Data: input, Value: cfg.Value, Gas: cfg.GasLimit}), cfg.Origin)
|
|
}
|
|
// Execute the preparatory steps for state transition which includes:
|
|
// - prepare accessList(post-berlin)
|
|
// - reset transient storage(eip 1153)
|
|
statedb.Prepare(rules, cfg.Origin, cfg.Coinbase, &address, vm.ActivePrecompiles(rules), nil)
|
|
|
|
// Call the code with the given configuration.
|
|
ret, leftOverGas, err := vmenv.Call(
|
|
sender,
|
|
address,
|
|
input,
|
|
cfg.GasLimit,
|
|
uint256.MustFromBig(cfg.Value),
|
|
)
|
|
return ret, leftOverGas, err
|
|
}
|
|
|