interesting
/
go-ethereum
mirror of https://github.com/ethereum/go-ethereum.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

cmd/evm, core/vm, test: refactored VM and core 

* Moved `vm.Transfer` to `core` package and changed execution to call
`env.Transfer` instead of `core.Transfer` directly.
* core/vm: byte code VM moved to jump table instead of switch
* Moved `vm.Transfer` to `core` package and changed execution to call
  `env.Transfer` instead of `core.Transfer` directly.
* Byte code VM now shares the same code as the JITVM
* Renamed Context to Contract
* Changed initialiser of state transition & unexported methods
* Removed the Execution object and refactor `Call`, `CallCode` &
  `Create` in to their own functions instead of being methods.
* Removed the hard dep on the state for the VM. The VM now
  depends on a Database interface returned by the environment. In the
  process the core now depends less on the statedb by usage of the env
* Moved `Log` from package `core/state` to package `core/vm`.
This commit is contained in:
Jeffrey Wilcke 2015-08-30 10:19:10 +02:00
parent f7a71996fb
commit 361082ec4b
39 changed files with 966 additions and 1082 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
cmd/evm/main.go
View File

@ -80,12 +80,17 @@ var (
Name: "sysstat",
Usage: "display system stats",
}
VerbosityFlag = cli.IntFlag{
Name: "verbosity",
Usage: "sets the verbosity level",
}
)
func init() {
app = utils.NewApp("0.2", "the evm command line interface")
app.Flags = []cli.Flag{
DebugFlag,
VerbosityFlag,
ForceJitFlag,
DisableJitFlag,
SysStatFlag,
@ -105,6 +110,7 @@ func run(ctx *cli.Context) {
vm.EnableJit = !ctx.GlobalBool(DisableJitFlag.Name)
glog.SetToStderr(true)
glog.SetV(ctx.GlobalInt(VerbosityFlag.Name))
db, _ := ethdb.NewMemDatabase()
statedb := state.New(common.Hash{}, db)
@ -179,18 +185,20 @@ func NewEnv(state *state.StateDB, transactor common.Address, value *big.Int) *VM
}
}
func (self *VMEnv) State() *state.StateDB { return self.state }
func (self *VMEnv) Origin() common.Address { return *self.transactor }
func (self *VMEnv) BlockNumber() *big.Int { return common.Big0 }
func (self *VMEnv) Coinbase() common.Address { return *self.transactor }
func (self *VMEnv) Time() *big.Int { return self.time }
func (self *VMEnv) Difficulty() *big.Int { return common.Big1 }
func (self *VMEnv) BlockHash() []byte { return make([]byte, 32) }
func (self *VMEnv) Value() *big.Int { return self.value }
func (self *VMEnv) GasLimit() *big.Int { return big.NewInt(1000000000) }
func (self *VMEnv) VmType() vm.Type { return vm.StdVmTy }
func (self *VMEnv) Depth() int { return 0 }
func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) Db() vm.Database { return self.state }
func (self *VMEnv) MakeSnapshot() vm.Database { return self.state.Copy() }
func (self *VMEnv) SetSnapshot(db vm.Database) { self.state.Set(db.(*state.StateDB)) }
func (self *VMEnv) Origin() common.Address { return *self.transactor }
func (self *VMEnv) BlockNumber() *big.Int { return common.Big0 }
func (self *VMEnv) Coinbase() common.Address { return *self.transactor }
func (self *VMEnv) Time() *big.Int { return self.time }
func (self *VMEnv) Difficulty() *big.Int { return common.Big1 }
func (self *VMEnv) BlockHash() []byte { return make([]byte, 32) }
func (self *VMEnv) Value() *big.Int { return self.value }
func (self *VMEnv) GasLimit() *big.Int { return big.NewInt(1000000000) }
func (self *VMEnv) VmType() vm.Type { return vm.StdVmTy }
func (self *VMEnv) Depth() int { return 0 }
func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) GetHash(n uint64) common.Hash {
if self.block.Number().Cmp(big.NewInt(int64(n))) == 0 {
return self.block.Hash()
@ -203,34 +211,24 @@ func (self *VMEnv) AddStructLog(log vm.StructLog) {
func (self *VMEnv) StructLogs() []vm.StructLog {
return self.logs
}
func (self *VMEnv) AddLog(log *state.Log) {
func (self *VMEnv) AddLog(log *vm.Log) {
self.state.AddLog(log)
}
func (self *VMEnv) CanTransfer(from vm.Account, balance *big.Int) bool {
return from.Balance().Cmp(balance) >= 0
func (self *VMEnv) CanTransfer(from common.Address, balance *big.Int) bool {
return self.state.GetBalance(from).Cmp(balance) >= 0
}
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
return vm.Transfer(from, to, amount)
return core.Transfer(from, to, amount)
}
func (self *VMEnv) vm(addr *common.Address, data []byte, gas, price, value *big.Int) *core.Execution {
return core.NewExecution(self, addr, data, gas, price, value)
func (self *VMEnv) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
self.Gas = gas
return core.Call(self, caller, addr, data, gas, price, value)
}
func (self *VMEnv) CallCode(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
return core.CallCode(self, caller, addr, data, gas, price, value)
}
func (self *VMEnv) Call(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
exe := self.vm(&addr, data, gas, price, value)
ret, err := exe.Call(addr, caller)
self.Gas = exe.Gas
return ret, err
}
func (self *VMEnv) CallCode(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
a := caller.Address()
exe := self.vm(&a, data, gas, price, value)
return exe.Call(addr, caller)
}
func (self *VMEnv) Create(caller vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
exe := self.vm(nil, data, gas, price, value)
return exe.Create(caller)
func (self *VMEnv) Create(caller vm.ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
return core.Create(self, caller, data, gas, price, value)
}

9
core/block_processor.go
View File

@ -25,6 +25,7 @@ import (
"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/ethdb"
"github.com/ethereum/go-ethereum/event"
@ -163,7 +164,7 @@ func (self *BlockProcessor) ApplyTransactions(gp GasPool, statedb *state.StateDB
return receipts, err
}
func (sm *BlockProcessor) RetryProcess(block *types.Block) (logs state.Logs, err error) {
func (sm *BlockProcessor) RetryProcess(block *types.Block) (logs vm.Logs, err error) {
// Processing a blocks may never happen simultaneously
sm.mutex.Lock()
defer sm.mutex.Unlock()
@ -188,7 +189,7 @@ func (sm *BlockProcessor) RetryProcess(block *types.Block) (logs state.Logs, err
// Process block will attempt to process the given block's transactions and applies them
// on top of the block's parent state (given it exists) and will return wether it was
// successful or not.
func (sm *BlockProcessor) Process(block *types.Block) (logs state.Logs, receipts types.Receipts, err error) {
func (sm *BlockProcessor) Process(block *types.Block) (logs vm.Logs, receipts types.Receipts, err error) {
// Processing a blocks may never happen simultaneously
sm.mutex.Lock()
defer sm.mutex.Unlock()
@ -204,7 +205,7 @@ func (sm *BlockProcessor) Process(block *types.Block) (logs state.Logs, receipts
return sm.processWithParent(block, parent)
}
func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs state.Logs, receipts types.Receipts, err error) {
func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs vm.Logs, receipts types.Receipts, err error) {
// Create a new state based on the parent's root (e.g., create copy)
state := state.New(parent.Root(), sm.chainDb)
header := block.Header()
@ -356,7 +357,7 @@ func (sm *BlockProcessor) GetBlockReceipts(bhash common.Hash) types.Receipts {
// GetLogs returns the logs of the given block. This method is using a two step approach
// where it tries to get it from the (updated) method which gets them from the receipts or
// the depricated way by re-processing the block.
func (sm *BlockProcessor) GetLogs(block *types.Block) (logs state.Logs, err error) {
func (sm *BlockProcessor) GetLogs(block *types.Block) (logs vm.Logs, err error) {
receipts := GetBlockReceipts(sm.chainDb, block.Hash())
// coalesce logs
for _, receipt := range receipts {

3
core/block_processor_test.go
View File

@ -24,6 +24,7 @@ import (
"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/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/pow/ezp"
@ -69,7 +70,7 @@ func TestPutReceipt(t *testing.T) {
hash[0] = 2
receipt := new(types.Receipt)
receipt.SetLogs(state.Logs{&state.Log{
receipt.SetLogs(vm.Logs{&vm.Log{
Address: addr,
Topics: []common.Hash{hash},
Data: []byte("hi"),

4
core/chain_manager_test.go
View File

@ -28,8 +28,8 @@ import (
"github.com/ethereum/ethash"
"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/ethdb"
"github.com/ethereum/go-ethereum/event"
@ -361,7 +361,7 @@ func TestChainMultipleInsertions(t *testing.T) {
type bproc struct{}
func (bproc) Process(*types.Block) (state.Logs, types.Receipts, error) { return nil, nil, nil }
func (bproc) Process(*types.Block) (vm.Logs, types.Receipts, error) { return nil, nil, nil }
func makeChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block {
var chain []*types.Block

10
core/events.go
View File

@ -20,8 +20,8 @@ import (
"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"
)
// TxPreEvent is posted when a transaction enters the transaction pool.
@ -42,23 +42,23 @@ type RemovedTransactionEvent struct{ Txs types.Transactions }
// ChainSplit is posted when a new head is detected
type ChainSplitEvent struct {
Block *types.Block
Logs state.Logs
Logs vm.Logs
}
type ChainEvent struct {
Block *types.Block
Hash common.Hash
Logs state.Logs
Logs vm.Logs
}
type ChainSideEvent struct {
Block *types.Block
Logs state.Logs
Logs vm.Logs
}
type PendingBlockEvent struct {
Block *types.Block
Logs state.Logs
Logs vm.Logs
}
type ChainUncleEvent struct {

114
core/execution.go
View File

@ -17,108 +17,104 @@
package core
import (
"errors"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/params"
)
// Execution is the execution environment for the given call or create action.
type Execution struct {
env vm.Environment
address *common.Address
input []byte
evm vm.VirtualMachine
Gas, price, value *big.Int
// Call executes within the given contract
func Call(env vm.Environment, caller vm.ContractRef, addr common.Address, input []byte, gas, gasPrice, value *big.Int) (ret []byte, err error) {
ret, _, err = exec(env, caller, &addr, &addr, input, env.Db().GetCode(addr), gas, gasPrice, value)
return ret, err
}
// NewExecution returns a new execution environment that handles all calling
// and creation logic defined by the YP.
func NewExecution(env vm.Environment, address *common.Address, input []byte, gas, gasPrice, value *big.Int) *Execution {
exe := &Execution{env: env, address: address, input: input, Gas: gas, price: gasPrice, value: value}
exe.evm = vm.NewVm(env)
return exe
// CallCode executes the given address' code as the given contract address
func CallCode(env vm.Environment, caller vm.ContractRef, addr common.Address, input []byte, gas, gasPrice, value *big.Int) (ret []byte, err error) {
prev := caller.Address()
ret, _, err = exec(env, caller, &prev, &addr, input, env.Db().GetCode(addr), gas, gasPrice, value)
return ret, err
}
// Call executes within the given context
func (self *Execution) Call(codeAddr common.Address, caller vm.ContextRef) ([]byte, error) {
// Retrieve the executing code
code := self.env.State().GetCode(codeAddr)
return self.exec(&codeAddr, code, caller)
}
// Create creates a new contract and runs the initialisation procedure of the
// contract. This returns the returned code for the contract and is stored
// elsewhere.
func (self *Execution) Create(caller vm.ContextRef) (ret []byte, err error, account *state.StateObject) {
// Input must be nil for create
code := self.input
self.input = nil
ret, err = self.exec(nil, code, caller)
// Create creates a new contract with the given code
func Create(env vm.Environment, caller vm.ContractRef, code []byte, gas, gasPrice, value *big.Int) (ret []byte, address common.Address, err error) {
ret, address, err = exec(env, caller, nil, nil, nil, code, gas, gasPrice, value)
// Here we get an error if we run into maximum stack depth,
// See: https://github.com/ethereum/yellowpaper/pull/131
// and YP definitions for CREATE instruction
if err != nil {
return nil, err, nil
return nil, address, err
}
account = self.env.State().GetStateObject(*self.address)
return
return ret, address, err
}
// exec executes the given code and executes within the contextAddr context.
func (self *Execution) exec(contextAddr *common.Address, code []byte, caller vm.ContextRef) (ret []byte, err error) {
env := self.env
evm := self.evm
func exec(env vm.Environment, caller vm.ContractRef, address, codeAddr *common.Address, input, code []byte, gas, gasPrice, value *big.Int) (ret []byte, addr common.Address, err error) {
evm := vm.NewVm(env)
// Depth check execution. Fail if we're trying to execute above the
// limit.
if env.Depth() > int(params.CallCreateDepth.Int64()) {
caller.ReturnGas(self.Gas, self.price)
caller.ReturnGas(gas, gasPrice)
return nil, vm.DepthError
return nil, common.Address{}, vm.DepthError
}
if !env.CanTransfer(env.State().GetStateObject(caller.Address()), self.value) {
caller.ReturnGas(self.Gas, self.price)
if !env.CanTransfer(caller.Address(), value) {
caller.ReturnGas(gas, gasPrice)
return nil, ValueTransferErr("insufficient funds to transfer value. Req %v, has %v", self.value, env.State().GetBalance(caller.Address()))
return nil, common.Address{}, ValueTransferErr("insufficient funds to transfer value. Req %v, has %v", value, env.Db().GetBalance(caller.Address()))
}
var createAccount bool
if self.address == nil {
if address == nil {
// Generate a new address
nonce := env.State().GetNonce(caller.Address())
env.State().SetNonce(caller.Address(), nonce+1)
nonce := env.Db().GetNonce(caller.Address())
env.Db().SetNonce(caller.Address(), nonce+1)
addr := crypto.CreateAddress(caller.Address(), nonce)
addr = crypto.CreateAddress(caller.Address(), nonce)
self.address = &addr
address = &addr
createAccount = true
}
snapshot := env.State().Copy()
snapshot := env.MakeSnapshot()
var (
from = env.State().GetStateObject(caller.Address())
to *state.StateObject
from = env.Db().GetAccount(caller.Address())
to vm.Account
)
if createAccount {
to = env.State().CreateAccount(*self.address)
to = env.Db().CreateAccount(*address)
} else {
to = env.State().GetOrNewStateObject(*self.address)
if !env.Db().Exist(*address) {
to = env.Db().CreateAccount(*address)
} else {
to = env.Db().GetAccount(*address)
}
}
vm.Transfer(from, to, self.value)
env.Transfer(from, to, value)
context := vm.NewContext(caller, to, self.value, self.Gas, self.price)
context.SetCallCode(contextAddr, code)
contract := vm.NewContract(caller, to, value, gas, gasPrice)
contract.SetCallCode(codeAddr, code)
ret, err = evm.Run(context, self.input)
ret, err = evm.Run(contract, input)
if err != nil {
env.State().Set(snapshot)
env.SetSnapshot(snapshot) //env.Db().Set(snapshot)
}
return
return ret, addr, err
}
// generic transfer method
func Transfer(from, to vm.Account, amount *big.Int) error {
if from.Balance().Cmp(amount) < 0 {
return errors.New("Insufficient balance in account")
}
from.SubBalance(amount)
to.AddBalance(amount)
return nil
}

41
core/state/statedb.go
View File

@ -21,6 +21,7 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
@ -42,7 +43,7 @@ type StateDB struct {
thash, bhash common.Hash
txIndex int
logs map[common.Hash]Logs
logs map[common.Hash]vm.Logs
logSize uint
}
@ -59,7 +60,7 @@ func New(root common.Hash, db ethdb.Database) *StateDB {
trie: tr,
stateObjects: make(map[string]*StateObject),
refund: new(big.Int),
logs: make(map[common.Hash]Logs),
logs: make(map[common.Hash]vm.Logs),
}
}
@ -69,7 +70,7 @@ func (self *StateDB) StartRecord(thash, bhash common.Hash, ti int) {
self.txIndex = ti
}
func (self *StateDB) AddLog(log *Log) {
func (self *StateDB) AddLog(log *vm.Log) {
log.TxHash = self.thash
log.BlockHash = self.bhash
log.TxIndex = uint(self.txIndex)
@ -78,30 +79,34 @@ func (self *StateDB) AddLog(log *Log) {
self.logSize++
}
func (self *StateDB) GetLogs(hash common.Hash) Logs {
func (self *StateDB) GetLogs(hash common.Hash) vm.Logs {
return self.logs[hash]
}
func (self *StateDB) Logs() Logs {
var logs Logs
func (self *StateDB) Logs() vm.Logs {
var logs vm.Logs
for _, lgs := range self.logs {
logs = append(logs, lgs...)
}
return logs
}
func (self *StateDB) Refund(gas *big.Int) {
func (self *StateDB) AddRefund(gas *big.Int) {
self.refund.Add(self.refund, gas)
}
/*
* GETTERS
*/
func (self *StateDB) HasAccount(addr common.Address) bool {
return self.GetStateObject(addr) != nil
}
func (self *StateDB) Exist(addr common.Address) bool {
return self.GetStateObject(addr) != nil
}
func (self *StateDB) GetAccount(addr common.Address) vm.Account {
return self.GetStateObject(addr)
}
// Retrieve the balance from the given address or 0 if object not found
func (self *StateDB) GetBalance(addr common.Address) *big.Int {
stateObject := self.GetStateObject(addr)
@ -245,7 +250,7 @@ func (self *StateDB) SetStateObject(object *StateObject) {
func (self *StateDB) GetOrNewStateObject(addr common.Address) *StateObject {
stateObject := self.GetStateObject(addr)
if stateObject == nil || stateObject.deleted {
stateObject = self.CreateAccount(addr)
stateObject = self.CreateStateObject(addr)
}
return stateObject
@ -264,7 +269,7 @@ func (self *StateDB) newStateObject(addr common.Address) *StateObject {
}
// Creates creates a new state object and takes ownership. This is different from "NewStateObject"
func (self *StateDB) CreateAccount(addr common.Address) *StateObject {
func (self *StateDB) CreateStateObject(addr common.Address) *StateObject {
// Get previous (if any)
so := self.GetStateObject(addr)
// Create a new one
@ -278,6 +283,10 @@ func (self *StateDB) CreateAccount(addr common.Address) *StateObject {
return newSo
}
func (self *StateDB) CreateAccount(addr common.Address) vm.Account {
return self.CreateStateObject(addr)
}
//
// Setting, copying of the state methods
//
@ -292,7 +301,7 @@ func (self *StateDB) Copy() *StateDB {
state.refund.Set(self.refund)
for hash, logs := range self.logs {
state.logs[hash] = make(Logs, len(logs))
state.logs[hash] = make(vm.Logs, len(logs))
copy(state.logs[hash], logs)
}
state.logSize = self.logSize
@ -309,6 +318,10 @@ func (self *StateDB) Set(state *StateDB) {
self.logSize = state.logSize
}
func (self *StateDB) GetRefund() *big.Int {
return self.refund
}
// IntermediateRoot computes the current root hash of the state trie.
// It is called in between transactions to get the root hash that
// goes into transaction receipts.

67
core/state_transition.go
View File

@ -51,7 +51,7 @@ type StateTransition struct {
initialGas *big.Int
value *big.Int
data []byte
state *state.StateDB
state vm.Database
env vm.Environment
}
@ -95,11 +95,7 @@ func IntrinsicGas(data []byte) *big.Int {
}
func ApplyMessage(env vm.Environment, msg Message, gp GasPool) ([]byte, *big.Int, error) {
return NewStateTransition(env, msg, gp).transitionState()
}
func NewStateTransition(env vm.Environment, msg Message, gp GasPool) *StateTransition {
return &StateTransition{
var st = StateTransition{
gp: gp,
env: env,
msg: msg,
@ -108,18 +104,22 @@ func NewStateTransition(env vm.Environment, msg Message, gp GasPool) *StateTrans
initialGas: new(big.Int),
value: msg.Value(),
data: msg.Data(),
state: env.State(),
state: env.Db(),
}
return st.transitionDb()
}
func (self *StateTransition) From() (*state.StateObject, error) {
func (self *StateTransition) from() (vm.Account, error) {
f, err := self.msg.From()
if err != nil {
return nil, err
}
return self.state.GetOrNewStateObject(f), nil
if !self.state.Exist(f) {
return self.state.CreateAccount(f), nil
}
return self.state.GetAccount(f), nil
}
func (self *StateTransition) To() *state.StateObject {
func (self *StateTransition) to() vm.Account {
if self.msg == nil {
return nil
}
@ -127,10 +127,14 @@ func (self *StateTransition) To() *state.StateObject {
if to == nil {
return nil // contract creation
}
return self.state.GetOrNewStateObject(*to)
if !self.state.Exist(*to) {
return self.state.CreateAccount(*to)
}
return self.state.GetAccount(*to)
}
func (self *StateTransition) UseGas(amount *big.Int) error {
func (self *StateTransition) useGas(amount *big.Int) error {
if self.gas.Cmp(amount) < 0 {
return vm.OutOfGasError
}
@ -139,15 +143,15 @@ func (self *StateTransition) UseGas(amount *big.Int) error {
return nil
}
func (self *StateTransition) AddGas(amount *big.Int) {
func (self *StateTransition) addGas(amount *big.Int) {
self.gas.Add(self.gas, amount)
}
func (self *StateTransition) BuyGas() error {
func (self *StateTransition) buyGas() error {
mgas := self.msg.Gas()
mgval := new(big.Int).Mul(mgas, self.gasPrice)
sender, err := self.From()
sender, err := self.from()
if err != nil {
return err
}
@ -157,7 +161,7 @@ func (self *StateTransition) BuyGas() error {
if err = self.gp.SubGas(mgas, self.gasPrice); err != nil {
return err
}
self.AddGas(mgas)
self.addGas(mgas)
self.initialGas.Set(mgas)
sender.SubBalance(mgval)
return nil
@ -165,18 +169,19 @@ func (self *StateTransition) BuyGas() error {
func (self *StateTransition) preCheck() (err error) {
msg := self.msg
sender, err := self.From()
sender, err := self.from()
if err != nil {
return err
}
// Make sure this transaction's nonce is correct
if sender.Nonce() != msg.Nonce() {
return NonceError(msg.Nonce(), sender.Nonce())
//if sender.Nonce() != msg.Nonce() {
if n := self.state.GetNonce(sender.Address()); n != msg.Nonce() {
return NonceError(msg.Nonce(), n)
}
// Pre-pay gas / Buy gas of the coinbase account
if err = self.BuyGas(); err != nil {
if err = self.buyGas(); err != nil {
if state.IsGasLimitErr(err) {
return err
}
@ -186,28 +191,28 @@ func (self *StateTransition) preCheck() (err error) {
return nil
}
func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, err error) {
func (self *StateTransition) transitionDb() (ret []byte, usedGas *big.Int, err error) {
if err = self.preCheck(); err != nil {
return
}
msg := self.msg
sender, _ := self.From() // err checked in preCheck
sender, _ := self.from() // err checked in preCheck
// Pay intrinsic gas
if err = self.UseGas(IntrinsicGas(self.data)); err != nil {
if err = self.useGas(IntrinsicGas(self.data)); err != nil {
return nil, nil, InvalidTxError(err)
}
vmenv := self.env
var ref vm.ContextRef
var addr common.Address
if MessageCreatesContract(msg) {
ret, err, ref = vmenv.Create(sender, self.data, self.gas, self.gasPrice, self.value)
ret, addr, err = vmenv.Create(sender, self.data, self.gas, self.gasPrice, self.value)
if err == nil {
dataGas := big.NewInt(int64(len(ret)))
dataGas.Mul(dataGas, params.CreateDataGas)
if err := self.UseGas(dataGas); err == nil {
ref.SetCode(ret)
if err := self.useGas(dataGas); err == nil {
self.state.SetCode(addr, ret)
} else {
ret = nil // does not affect consensus but useful for StateTests validations
glog.V(logger.Core).Infoln("Insufficient gas for creating code. Require", dataGas, "and have", self.gas)
@ -216,8 +221,8 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
glog.V(logger.Core).Infoln("VM create err:", err)
} else {
// Increment the nonce for the next transaction
self.state.SetNonce(sender.Address(), sender.Nonce()+1)
ret, err = vmenv.Call(sender, self.To().Address(), self.data, self.gas, self.gasPrice, self.value)
self.state.SetNonce(sender.Address(), self.state.GetNonce(sender.Address())+1)
ret, err = vmenv.Call(sender, self.to().Address(), self.data, self.gas, self.gasPrice, self.value)
glog.V(logger.Core).Infoln("VM call err:", err)
}
@ -241,13 +246,13 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
}
func (self *StateTransition) refundGas() {
sender, _ := self.From() // err already checked
sender, _ := self.from() // err already checked
// Return remaining gas
remaining := new(big.Int).Mul(self.gas, self.gasPrice)
sender.AddBalance(remaining)
uhalf := remaining.Div(self.gasUsed(), common.Big2)
refund := common.BigMin(uhalf, self.state.Refunds())
refund := common.BigMin(uhalf, self.state.GetRefund())
self.gas.Add(self.gas, refund)
self.state.AddBalance(sender.Address(), refund.Mul(refund, self.gasPrice))

4
core/types/bloom9.go
View File

@ -20,7 +20,7 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
)
@ -37,7 +37,7 @@ func CreateBloom(receipts Receipts) Bloom {
return BytesToBloom(bin.Bytes())
}
func LogsBloom(logs state.Logs) *big.Int {
func LogsBloom(logs vm.Logs) *big.Int {
bin := new(big.Int)
for _, log := range logs {
data := make([]common.Hash, len(log.Topics))

8
core/types/common.go
View File

@ -19,14 +19,14 @@ package types
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/vm"
)
type BlockProcessor interface {
Process(*Block) (state.Logs, Receipts, error)
Process(*Block) (vm.Logs, Receipts, error)
}
const bloomLength = 256

14
core/types/receipt.go
View File

@ -23,7 +23,7 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/rlp"
)
@ -33,7 +33,7 @@ type Receipt struct {
Bloom Bloom
TxHash common.Hash
ContractAddress common.Address
logs state.Logs
logs vm.Logs
GasUsed *big.Int
}
@ -41,11 +41,11 @@ func NewReceipt(root []byte, cumalativeGasUsed *big.Int) *Receipt {
return &Receipt{PostState: common.CopyBytes(root), CumulativeGasUsed: new(big.Int).Set(cumalativeGasUsed)}
}
func (self *Receipt) SetLogs(logs state.Logs) {
func (self *Receipt) SetLogs(logs vm.Logs) {
self.logs = logs
}
func (self *Receipt) Logs() state.Logs {
func (self *Receipt) Logs() vm.Logs {
return self.logs
}
@ -60,7 +60,7 @@ func (self *Receipt) DecodeRLP(s *rlp.Stream) error {
Bloom Bloom
TxHash common.Hash
ContractAddress common.Address
Logs state.Logs
Logs vm.Logs
GasUsed *big.Int
}
if err := s.Decode(&r); err != nil {
@ -74,9 +74,9 @@ func (self *Receipt) DecodeRLP(s *rlp.Stream) error {
type ReceiptForStorage Receipt
func (self *ReceiptForStorage) EncodeRLP(w io.Writer) error {
storageLogs := make([]*state.LogForStorage, len(self.logs))
storageLogs := make([]*vm.LogForStorage, len(self.logs))
for i, log := range self.logs {
storageLogs[i] = (*state.LogForStorage)(log)
storageLogs[i] = (*vm.LogForStorage)(log)
}
return rlp.Encode(w, []interface{}{self.PostState, self.CumulativeGasUsed, self.Bloom, self.TxHash, self.ContractAddress, storageLogs, self.GasUsed})
}

2
core/vm/asm.go
View File

@ -23,6 +23,8 @@ import (
"github.com/ethereum/go-ethereum/common"
)
// Dissassemble dissassembles the byte code and returns the string
// representation (human readable opcodes).
func Disassemble(script []byte) (asm []string) {
pc := new(big.Int)
for {

55
core/vm/common.go
View File

@ -22,34 +22,34 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
)
// Global Debug flag indicating Debug VM (full logging)
var Debug bool
// Type is the VM type accepted by **NewVm**
type Type byte
const (
StdVmTy Type = iota
JitVmTy
StdVmTy Type = iota // Default standard VM
JitVmTy // LLVM JIT VM
MaxVmTy
LogTyPretty byte = 0x1
LogTyDiff byte = 0x2
)
var (
Pow256 = common.BigPow(2, 256)
Pow256 = common.BigPow(2, 256) // Pew256 is 2**256
U256 = common.U256
S256 = common.S256
U256 = common.U256 // Shortcut to common.U256
S256 = common.S256 // Shortcut to common.S256
Zero = common.Big0
One = common.Big1
Zero = common.Big0 // Shortcut to common.Big0
One = common.Big1 // Shortcut to common.Big1
max = big.NewInt(math.MaxInt64)
max = big.NewInt(math.MaxInt64) // Maximum 256 bit integer
)
// NewVm returns a new VM based on the Environment
func NewVm(env Environment) VirtualMachine {
switch env.VmType() {
case JitVmTy:
@ -62,6 +62,7 @@ func NewVm(env Environment) VirtualMachine {
}
}
// calculates the memory size required for a step
func calcMemSize(off, l *big.Int) *big.Int {
if l.Cmp(common.Big0) == 0 {
return common.Big0
@ -70,6 +71,32 @@ func calcMemSize(off, l *big.Int) *big.Int {
return new(big.Int).Add(off, l)
}
// calculates the quadratic gas
func quadMemGas(mem *Memory, newMemSize, gas *big.Int) {
if newMemSize.Cmp(common.Big0) > 0 {
newMemSizeWords := toWordSize(newMemSize)
newMemSize.Mul(newMemSizeWords, u256(32))
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
// be careful reusing variables here when changing.
// The order has been optimised to reduce allocation
oldSize := toWordSize(big.NewInt(int64(mem.Len())))
pow := new(big.Int).Exp(oldSize, common.Big2, Zero)
linCoef := oldSize.Mul(oldSize, params.MemoryGas)
quadCoef := new(big.Int).Div(pow, params.QuadCoeffDiv)
oldTotalFee := new(big.Int).Add(linCoef, quadCoef)
pow.Exp(newMemSizeWords, common.Big2, Zero)
linCoef = linCoef.Mul(newMemSizeWords, params.MemoryGas)
quadCoef = quadCoef.Div(pow, params.QuadCoeffDiv)
newTotalFee := linCoef.Add(linCoef, quadCoef)
fee := newTotalFee.Sub(newTotalFee, oldTotalFee)
gas.Add(gas, fee)
}
}
}
// Simple helper
func u256(n int64) *big.Int {
return big.NewInt(n)
@ -86,6 +113,8 @@ func toValue(val *big.Int) interface{} {
return val
}
// getData returns a slice from the data based on the start and size and pads
// up to size with zero's. This function is overflow safe.
func getData(data []byte, start, size *big.Int) []byte {
dlen := big.NewInt(int64(len(data)))
@ -94,7 +123,9 @@ func getData(data []byte, start, size *big.Int) []byte {
return common.RightPadBytes(data[s.Uint64():e.Uint64()], int(size.Uint64()))
}
func UseGas(gas, amount *big.Int) bool {
// useGas attempts to subtract the amount of gas and returns whether it was
// successful
func useGas(gas, amount *big.Int) bool {
if gas.Cmp(amount) < 0 {
return false
}

52
core/vm/context.go → core/vm/contract.go
View File

@ -22,15 +22,18 @@ import (
"github.com/ethereum/go-ethereum/common"
)
type ContextRef interface {
// ContractRef is a reference to the contract's backing object
type ContractRef interface {
ReturnGas(*big.Int, *big.Int)
Address() common.Address
SetCode([]byte)
}
type Context struct {
caller ContextRef
self ContextRef
// Contract represents an ethereum contract in the state database. It contains
// the the contract code, calling arguments. Contract implements ContractReg
type Contract struct {
caller ContractRef
self ContractRef
jumpdests destinations // result of JUMPDEST analysis.
@ -44,10 +47,10 @@ type Context struct {
}
// Create a new context for the given data items.
func NewContext(caller ContextRef, object ContextRef, value, gas, price *big.Int) *Context {
c := &Context{caller: caller, self: object, Args: nil}
func NewContract(caller ContractRef, object ContractRef, value, gas, price *big.Int) *Contract {
c := &Contract{caller: caller, self: object, Args: nil}
if parent, ok := caller.(*Context); ok {
if parent, ok := caller.(*Contract); ok {
// Reuse JUMPDEST analysis from parent context if available.
c.jumpdests = parent.jumpdests
} else {
@ -66,11 +69,13 @@ func NewContext(caller ContextRef, object ContextRef, value, gas, price *big.Int
return c
}
func (c *Context) GetOp(n uint64) OpCode {
// GetOp returns the n'th element in the contract's byte array
func (c *Contract) GetOp(n uint64) OpCode {
return OpCode(c.GetByte(n))
}
func (c *Context) GetByte(n uint64) byte {
// GetByte returns the n'th byte in the contract's byte array
func (c *Contract) GetByte(n uint64) byte {
if n < uint64(len(c.Code)) {
return c.Code[n]
}
@ -78,43 +83,44 @@ func (c *Context) GetByte(n uint64) byte {
return 0
}
func (c *Context) Return(ret []byte) []byte {
// Return returns the given ret argument and returns any remaining gas to the
// caller
func (c *Contract) Return(ret []byte) []byte {
// Return the remaining gas to the caller
c.caller.ReturnGas(c.Gas, c.Price)
return ret
}
/*
* Gas functions
*/
func (c *Context) UseGas(gas *big.Int) (ok bool) {
ok = UseGas(c.Gas, gas)
// UseGas attempts the use gas and subtracts it and returns true on success
func (c *Contract) UseGas(gas *big.Int) (ok bool) {
ok = useGas(c.Gas, gas)
if ok {
c.UsedGas.Add(c.UsedGas, gas)
}
return
}
// Implement the caller interface
func (c *Context) ReturnGas(gas, price *big.Int) {
// ReturnGas adds the given gas back to itself.
func (c *Contract) ReturnGas(gas, price *big.Int) {
// Return the gas to the context
c.Gas.Add(c.Gas, gas)
c.UsedGas.Sub(c.UsedGas, gas)
}
/*
* Set / Get
*/
func (c *Context) Address() common.Address {
// Address returns the contracts address
func (c *Contract) Address() common.Address {
return c.self.Address()
}
func (self *Context) SetCode(code []byte) {
// SetCode sets the code to the contract
func (self *Contract) SetCode(code []byte) {
self.Code = code
}
func (self *Context) SetCallCode(addr *common.Address, code []byte) {
// SetCallCode sets the address of the code address and sets the code
// of the contract according to the backing database.
func (self *Contract) SetCallCode(addr *common.Address, code []byte) {
self.Code = code
self.CodeAddr = addr
}

10
core/vm/contracts.go
View File

@ -26,22 +26,22 @@ import (
"github.com/ethereum/go-ethereum/params"
)
type Address interface {
Call(in []byte) []byte
}
// PrecompiledAccount represents a native ethereum contract
type PrecompiledAccount struct {
Gas func(l int) *big.Int
fn func(in []byte) []byte
}
// Call calls the native function
func (self PrecompiledAccount) Call(in []byte) []byte {
return self.fn(in)
}
// Precompiled contains the default set of ethereum contracts
var Precompiled = PrecompiledContracts()
// XXX Could set directly. Testing requires resetting and setting of pre compiled contracts.
// PrecompiledContracts returns the default set of precompiled ethereum
// contracts defined by the ethereum yellow paper.
func PrecompiledContracts() map[string]*PrecompiledAccount {
return map[string]*PrecompiledAccount{
// ECRECOVER

23
core/vm/settings.go → core/vm/doc.go
View File

@ -14,12 +14,19 @@
// 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 implements the Ethereum Virtual Machine.
The vm package implements two EVMs, a byte code VM and a JIT VM. The BC
(Byte Code) VM loops over a set of bytes and executes them according to a set
of rules defined in the Ethereum yellow paper. When the BC VM is invokes it
invokes the JIT VM in a seperate goroutine and compiles the byte code in JIT
instructions.
The JIT VM, when invoked, loops around a set of pre-defined instructions until
it either runs of gas, causes an internel error, returns or stops. At a later
stage the JIT VM will see some additional features that will cause sets of
instructions to be compiled down to segments. Segments are sets of instructions
that can be ran in one go saving precious time during execution.
*/
package vm
var (
EnableJit bool // Enables the JIT VM
ForceJit bool // Force the JIT, skip byte VM
MaxProgSize int // Max cache size for JIT Programs
)
const defaultJitMaxCache int = 64

83
core/vm/environment.go
View File

@ -17,39 +17,86 @@
package vm
import (
"errors"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
)
// Environment is is required by the virtual machine to get information from
// it's own isolated environment. For an example see `core.VMEnv`
type Environment interface {
State() *state.StateDB
// it's own isolated environment.
// Environment is an EVM requirement and helper which allows access to outside
// information such like states.
type Environment interface {
// The state database
Db() Database
// Creates a restorable snapshot
MakeSnapshot() Database
// Set database to previous snapshot
SetSnapshot(Database)
// Address of the original invoker (first occurance of the VM invoker)
Origin() common.Address
// The block number this VM is invoken on
BlockNumber() *big.Int
// The n'th hash ago from this block number
GetHash(n uint64) common.Hash
// The handler's address
Coinbase() common.Address
// The current time (block time)
Time() *big.Int
// Difficulty set on the current block
Difficulty() *big.Int
// The gas limit of the block
GasLimit() *big.Int
CanTransfer(from Account, balance *big.Int) bool
// Determines whether it's possible to transact
CanTransfer(from common.Address, balance *big.Int) bool
// Transfer from to to with amount set
Transfer(from, to Account, amount *big.Int) error
AddLog(*state.Log)
// Adds a LOG to the state
AddLog(*Log)
// Adds a structured log to the env
AddStructLog(StructLog)
// Returns all coalesced structured logs
StructLogs() []StructLog
// Type of the VM
VmType() Type
// Current calling depth
Depth() int
SetDepth(i int)
Call(me ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)
CallCode(me ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)
Create(me ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef)
// Call another contract
Call(me ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)
// Take another's contract code and execute within our own context
CallCode(me ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)
// Create a new contract
Create(me ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error)
}
// Database is a EVM database for full state querying
type Database interface {
GetAccount(common.Address) Account
CreateAccount(common.Address) Account
AddBalance(common.Address, *big.Int)
GetBalance(common.Address) *big.Int
GetNonce(common.Address) uint64
SetNonce(common.Address, uint64)
GetCode(common.Address) []byte
SetCode(common.Address, []byte)
AddRefund(*big.Int)
GetRefund() *big.Int
GetState(common.Address, common.Hash) common.Hash
SetState(common.Address, common.Hash, common.Hash)
Delete(common.Address) bool
Exist(common.Address) bool
IsDeleted(common.Address) bool
}
// StructLog is emited to the Environment each cycle and lists information about the curent internal state
@ -68,18 +115,10 @@ type StructLog struct {
type Account interface {
SubBalance(amount *big.Int)
AddBalance(amount *big.Int)
SetBalance(*big.Int)
SetNonce(uint64)
Balance() *big.Int
Address() common.Address
}
// generic transfer method
func Transfer(from, to Account, amount *big.Int) error {
if from.Balance().Cmp(amount) < 0 {
return errors.New("Insufficient balance in account")
}
from.SubBalance(amount)
to.AddBalance(amount)
return nil
ReturnGas(*big.Int, *big.Int)
SetCode([]byte)
}

2
core/vm/gas.go
View File

@ -37,6 +37,7 @@ var (
GasContractByte = big.NewInt(200)
)
// baseCheck checks for any stack error underflows
func baseCheck(op OpCode, stack *stack, gas *big.Int) error {
// PUSH and DUP are a bit special. They all cost the same but we do want to have checking on stack push limit
// PUSH is also allowed to calculate the same price for all PUSHes
@ -63,6 +64,7 @@ func baseCheck(op OpCode, stack *stack, gas *big.Int) error {
return nil
}
// casts a arbitrary number to the amount of words (sets of 32 bytes)
func toWordSize(size *big.Int) *big.Int {
tmp := new(big.Int)
tmp.Add(size, u256(31))

263
core/vm/instructions.go
View File

@ -20,46 +20,52 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/params"
)
type instrFn func(instr instruction, env Environment, context *Context, memory *Memory, stack *stack)
type instrExFn func(instr instruction, ret *big.Int, env Environment, context *Context, memory *Memory, stack *stack)
type programInstruction interface {
Do(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack)
}
type instrFn func(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack)
// Do executes the function. This implements programInstruction
func (fn instrFn) Do(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
fn(instr, pc, env, contract, memory, stack)
}
type instruction struct {
op OpCode
pc uint64
fn instrFn
specFn instrExFn
data *big.Int
op OpCode
pc uint64
fn instrFn
data *big.Int
gas *big.Int
spop int
spush int
}
func opStaticJump(instr instruction, ret *big.Int, env Environment, context *Context, memory *Memory, stack *stack) {
func opStaticJump(instr instruction, pc *uint64, ret *big.Int, env Environment, contract *Contract, memory *Memory, stack *stack) {
ret.Set(instr.data)
}
func opAdd(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opAdd(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Add(x, y)))
}
func opSub(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSub(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Sub(x, y)))
}
func opMul(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMul(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Mul(x, y)))
}
func opDiv(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opDiv(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) != 0 {
stack.push(U256(x.Div(x, y)))
@ -68,7 +74,7 @@ func opDiv(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opSdiv(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSdiv(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := S256(stack.pop()), S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
stack.push(new(big.Int))
@ -88,7 +94,7 @@ func opSdiv(instr instruction, env Environment, context *Context, memory *Memory
}
}
func opMod(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMod(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) == 0 {
stack.push(new(big.Int))
@ -97,7 +103,7 @@ func opMod(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opSmod(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSmod(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := S256(stack.pop()), S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
@ -117,12 +123,12 @@ func opSmod(instr instruction, env Environment, context *Context, memory *Memory
}
}
func opExp(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opExp(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Exp(x, y, Pow256)))
}
func opSignExtend(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSignExtend(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
back := stack.pop()
if back.Cmp(big.NewInt(31)) < 0 {
bit := uint(back.Uint64()*8 + 7)
@ -139,12 +145,12 @@ func opSignExtend(instr instruction, env Environment, context *Context, memory *
}
}
func opNot(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opNot(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x := stack.pop()
stack.push(U256(x.Not(x)))
}
func opLt(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opLt(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
if x.Cmp(y) < 0 {
stack.push(big.NewInt(1))
@ -153,7 +159,7 @@ func opLt(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opGt(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opGt(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
if x.Cmp(y) > 0 {
stack.push(big.NewInt(1))
@ -162,7 +168,7 @@ func opGt(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opSlt(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSlt(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := S256(stack.pop()), S256(stack.pop())
if x.Cmp(S256(y)) < 0 {
stack.push(big.NewInt(1))
@ -171,7 +177,7 @@ func opSlt(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opSgt(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSgt(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := S256(stack.pop()), S256(stack.pop())
if x.Cmp(y) > 0 {
stack.push(big.NewInt(1))
@ -180,7 +186,7 @@ func opSgt(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opEq(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opEq(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
if x.Cmp(y) == 0 {
stack.push(big.NewInt(1))
@ -189,7 +195,7 @@ func opEq(instr instruction, env Environment, context *Context, memory *Memory,
}
}
func opIszero(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opIszero(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x := stack.pop()
if x.Cmp(common.Big0) > 0 {
stack.push(new(big.Int))
@ -198,19 +204,19 @@ func opIszero(instr instruction, env Environment, context *Context, memory *Memo
}
}
func opAnd(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opAnd(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(x.And(x, y))
}
func opOr(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opOr(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(x.Or(x, y))
}
func opXor(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opXor(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y := stack.pop(), stack.pop()
stack.push(x.Xor(x, y))
}
func opByte(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opByte(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
th, val := stack.pop(), stack.pop()
if th.Cmp(big.NewInt(32)) < 0 {
byte := big.NewInt(int64(common.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
@ -219,7 +225,7 @@ func opByte(instr instruction, env Environment, context *Context, memory *Memory
stack.push(new(big.Int))
}
}
func opAddmod(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opAddmod(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y, z := stack.pop(), stack.pop(), stack.pop()
if z.Cmp(Zero) > 0 {
add := x.Add(x, y)
@ -229,7 +235,7 @@ func opAddmod(instr instruction, env Environment, context *Context, memory *Memo
stack.push(new(big.Int))
}
}
func opMulmod(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMulmod(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
x, y, z := stack.pop(), stack.pop(), stack.pop()
if z.Cmp(Zero) > 0 {
mul := x.Mul(x, y)
@ -240,92 +246,92 @@ func opMulmod(instr instruction, env Environment, context *Context, memory *Memo
}
}
func opSha3(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSha3(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
offset, size := stack.pop(), stack.pop()
hash := crypto.Sha3(memory.Get(offset.Int64(), size.Int64()))
stack.push(common.BytesToBig(hash))
}
func opAddress(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(common.Bytes2Big(context.Address().Bytes()))
func opAddress(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(common.Bytes2Big(contract.Address().Bytes()))
}
func opBalance(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opBalance(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
addr := common.BigToAddress(stack.pop())
balance := env.State().GetBalance(addr)
balance := env.Db().GetBalance(addr)
stack.push(new(big.Int).Set(balance))
}
func opOrigin(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opOrigin(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(env.Origin().Big())
}
func opCaller(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(common.Bytes2Big(context.caller.Address().Bytes()))
func opCaller(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(common.Bytes2Big(contract.caller.Address().Bytes()))
}
func opCallValue(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(context.value))
func opCallValue(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(contract.value))
}
func opCalldataLoad(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(common.Bytes2Big(getData(context.Input, stack.pop(), common.Big32)))
func opCalldataLoad(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(common.Bytes2Big(getData(contract.Input, stack.pop(), common.Big32)))
}
func opCalldataSize(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(big.NewInt(int64(len(context.Input))))
func opCalldataSize(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(big.NewInt(int64(len(contract.Input))))
}
func opCalldataCopy(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opCalldataCopy(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
var (
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
memory.Set(mOff.Uint64(), l.Uint64(), getData(context.Input, cOff, l))
memory.Set(mOff.Uint64(), l.Uint64(), getData(contract.Input, cOff, l))
}
func opExtCodeSize(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opExtCodeSize(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
addr := common.BigToAddress(stack.pop())
l := big.NewInt(int64(len(env.State().GetCode(addr))))
l := big.NewInt(int64(len(env.Db().GetCode(addr))))
stack.push(l)
}
func opCodeSize(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
l := big.NewInt(int64(len(context.Code)))
func opCodeSize(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
l := big.NewInt(int64(len(contract.Code)))
stack.push(l)
}
func opCodeCopy(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opCodeCopy(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
var (
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
codeCopy := getData(context.Code, cOff, l)
codeCopy := getData(contract.Code, cOff, l)
memory.Set(mOff.Uint64(), l.Uint64(), codeCopy)
}
func opExtCodeCopy(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opExtCodeCopy(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
var (
addr = common.BigToAddress(stack.pop())
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
codeCopy := getData(env.State().GetCode(addr), cOff, l)
codeCopy := getData(env.Db().GetCode(addr), cOff, l)
memory.Set(mOff.Uint64(), l.Uint64(), codeCopy)
}
func opGasprice(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(context.Price))
func opGasprice(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(contract.Price))
}
func opBlockhash(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opBlockhash(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
num := stack.pop()
n := new(big.Int).Sub(env.BlockNumber(), common.Big257)
@ -336,43 +342,43 @@ func opBlockhash(instr instruction, env Environment, context *Context, memory *M
}
}
func opCoinbase(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opCoinbase(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(env.Coinbase().Big())
}
func opTimestamp(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opTimestamp(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(U256(new(big.Int).Set(env.Time())))
}
func opNumber(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opNumber(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(U256(new(big.Int).Set(env.BlockNumber())))
}
func opDifficulty(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opDifficulty(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(U256(new(big.Int).Set(env.Difficulty())))
}
func opGasLimit(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opGasLimit(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(U256(new(big.Int).Set(env.GasLimit())))
}
func opPop(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opPop(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.pop()
}
func opPush(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opPush(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(instr.data))
}
func opDup(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opDup(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.dup(int(instr.data.Int64()))
}
func opSwap(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSwap(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.swap(int(instr.data.Int64()))
}
func opLog(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opLog(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
n := int(instr.data.Int64())
topics := make([]common.Hash, n)
mStart, mSize := stack.pop(), stack.pop()
@ -381,85 +387,88 @@ func opLog(instr instruction, env Environment, context *Context, memory *Memory,
}
d := memory.Get(mStart.Int64(), mSize.Int64())
log := state.NewLog(context.Address(), topics, d, env.BlockNumber().Uint64())
log := NewLog(contract.Address(), topics, d, env.BlockNumber().Uint64())
env.AddLog(log)
}
func opMload(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMload(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
offset := stack.pop()
val := common.BigD(memory.Get(offset.Int64(), 32))
stack.push(val)
}
func opMstore(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMstore(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
// pop value of the stack
mStart, val := stack.pop(), stack.pop()
memory.Set(mStart.Uint64(), 32, common.BigToBytes(val, 256))
}
func opMstore8(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMstore8(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
off, val := stack.pop().Int64(), stack.pop().Int64()
memory.store[off] = byte(val & 0xff)
}
func opSload(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSload(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
loc := common.BigToHash(stack.pop())
val := env.State().GetState(context.Address(), loc).Big()
val := env.Db().GetState(contract.Address(), loc).Big()
stack.push(val)
}
func opSstore(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opSstore(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
loc := common.BigToHash(stack.pop())
val := stack.pop()
env.State().SetState(context.Address(), loc, common.BigToHash(val))
env.Db().SetState(contract.Address(), loc, common.BigToHash(val))
}
func opJump(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {}
func opJumpi(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {}
func opJumpdest(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {}
func opJump(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
}
func opJumpi(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
}
func opJumpdest(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
}
func opPc(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opPc(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(instr.data))
}
func opMsize(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opMsize(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(big.NewInt(int64(memory.Len())))
}
func opGas(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(context.Gas))
func opGas(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.push(new(big.Int).Set(contract.Gas))
}
func opCreate(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opCreate(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
var (
value = stack.pop()
offset, size = stack.pop(), stack.pop()
input = memory.Get(offset.Int64(), size.Int64())
gas = new(big.Int).Set(context.Gas)
gas = new(big.Int).Set(contract.Gas)
addr common.Address
ret []byte
suberr error
)
context.UseGas(context.Gas)
ret, suberr, ref := env.Create(context, input, gas, context.Price, value)
contract.UseGas(contract.Gas)
ret, addr, suberr = env.Create(contract, input, gas, contract.Price, value)
if suberr != nil {
stack.push(new(big.Int))
} else {
// gas < len(ret) * Createinstr.dataGas == NO_CODE
dataGas := big.NewInt(int64(len(ret)))
dataGas.Mul(dataGas, params.CreateDataGas)
if context.UseGas(dataGas) {
ref.SetCode(ret)
if contract.UseGas(dataGas) {
env.Db().SetCode(addr, ret)
}
addr = ref.Address()
stack.push(addr.Big())
}
}
func opCall(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opCall(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
gas := stack.pop()
// pop gas and value of the stack.
addr, value := stack.pop(), stack.pop()
@ -478,7 +487,7 @@ func opCall(instr instruction, env Environment, context *Context, memory *Memory
gas.Add(gas, params.CallStipend)
}
ret, err := env.Call(context, address, args, gas, context.Price, value)
ret, err := env.Call(contract, address, args, gas, contract.Price, value)
if err != nil {
stack.push(new(big.Int))
@ -490,7 +499,7 @@ func opCall(instr instruction, env Environment, context *Context, memory *Memory
}
}
func opCallCode(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
func opCallCode(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
gas := stack.pop()
// pop gas and value of the stack.
addr, value := stack.pop(), stack.pop()
@ -509,7 +518,7 @@ func opCallCode(instr instruction, env Environment, context *Context, memory *Me
gas.Add(gas, params.CallStipend)
}
ret, err := env.CallCode(context, address, args, gas, context.Price, value)
ret, err := env.CallCode(contract, address, args, gas, contract.Price, value)
if err != nil {
stack.push(new(big.Int))
@ -521,14 +530,58 @@ func opCallCode(instr instruction, env Environment, context *Context, memory *Me
}
}
func opReturn(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {}
func opStop(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {}
func opSuicide(instr instruction, env Environment, context *Context, memory *Memory, stack *stack) {
receiver := env.State().GetOrNewStateObject(common.BigToAddress(stack.pop()))
balance := env.State().GetBalance(context.Address())
receiver.AddBalance(balance)
env.State().Delete(context.Address())
func opReturn(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
}
func opStop(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
}
func opSuicide(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
//receiver := env.Db().GetOrNewStateObject(common.BigToAddress(stack.pop()))
//receiver.AddBalance(balance)
balance := env.Db().GetBalance(contract.Address())
env.Db().AddBalance(common.BigToAddress(stack.pop()), balance)
env.Db().Delete(contract.Address())
}
// following functions are used by the instruction jump table
// make log instruction function
func makeLog(size int) instrFn {
return func(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
topics := make([]common.Hash, size)
mStart, mSize := stack.pop(), stack.pop()
for i := 0; i < size; i++ {
topics[i] = common.BigToHash(stack.pop())
}
d := memory.Get(mStart.Int64(), mSize.Int64())
log := NewLog(contract.Address(), topics, d, env.BlockNumber().Uint64())
env.AddLog(log)
}
}
// make push instruction function
func makePush(size uint64, bsize *big.Int) instrFn {
return func(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
byts := getData(contract.Code, new(big.Int).SetUint64(*pc+1), bsize)
stack.push(common.Bytes2Big(byts))
*pc += size
}
}
// make push instruction function
func makeDup(size int64) instrFn {
return func(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.dup(int(size))
}
}
// make swap instruction function
func makeSwap(size int64) instrFn {
// switch n + 1 otherwise n would be swapped with n
size += 1
return func(instr instruction, pc *uint64, env Environment, contract *Contract, memory *Memory, stack *stack) {
stack.swap(int(size))
}
}

111
core/vm/jit.go
View File

@ -20,10 +20,12 @@ import (
"fmt"
"math/big"
"sync/atomic"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
"github.com/hashicorp/golang-lru"
)
@ -35,6 +37,14 @@ const (
progCompile
progReady
progError
defaultJitMaxCache int = 64
)
var (
EnableJit bool // Enables the JIT VM
ForceJit bool // Force the JIT, skip byte VM
MaxProgSize int // Max cache size for JIT Programs
)
var programs *lru.Cache
@ -74,7 +84,7 @@ type Program struct {
Id common.Hash // Id of the program
status int32 // status should be accessed atomically
context *Context
contract *Contract
instructions []instruction // instruction set
mapping map[uint64]int // real PC mapping to array indices
@ -108,7 +118,7 @@ func (p *Program) addInstr(op OpCode, pc uint64, fn instrFn, data *big.Int) {
baseOp = DUP1
}
base := _baseCheck[baseOp]
instr := instruction{op, pc, fn, nil, data, base.gas, base.stackPop, base.stackPush}
instr := instruction{op, pc, fn, data, base.gas, base.stackPop, base.stackPush}
p.instructions = append(p.instructions, instr)
p.mapping[pc] = len(p.instructions) - 1
@ -127,6 +137,13 @@ func CompileProgram(program *Program) (err error) {
atomic.StoreInt32(&program.status, int32(progReady))
}
}()
if glog.V(logger.Debug) {
glog.Infof("compiling %x\n", program.Id[:4])
tstart := time.Now()
defer func() {
glog.Infof("compiled %x instrc: %d time: %v\n", program.Id[:4], len(program.instructions), time.Since(tstart))
}()
}
// loop thru the opcodes and "compile" in to instructions
for pc := uint64(0); pc < uint64(len(program.code)); pc++ {
@ -264,7 +281,7 @@ func CompileProgram(program *Program) (err error) {
program.addInstr(op, pc, opReturn, nil)
case SUICIDE:
program.addInstr(op, pc, opSuicide, nil)
case STOP: // Stop the context
case STOP: // Stop the contract
program.addInstr(op, pc, opStop, nil)
default:
program.addInstr(op, pc, nil, nil)
@ -274,23 +291,24 @@ func CompileProgram(program *Program) (err error) {
return nil
}
// RunProgram runs the program given the enviroment and context and returns an
// RunProgram runs the program given the enviroment and contract and returns an
// error if the execution failed (non-consensus)
func RunProgram(program *Program, env Environment, context *Context, input []byte) ([]byte, error) {
return runProgram(program, 0, NewMemory(), newstack(), env, context, input)
func RunProgram(program *Program, env Environment, contract *Contract, input []byte) ([]byte, error) {
return runProgram(program, 0, NewMemory(), newstack(), env, contract, input)
}
func runProgram(program *Program, pcstart uint64, mem *Memory, stack *stack, env Environment, context *Context, input []byte) ([]byte, error) {
context.Input = input
func runProgram(program *Program, pcstart uint64, mem *Memory, stack *stack, env Environment, contract *Contract, input []byte) ([]byte, error) {
contract.Input = input
var (
caller = context.caller
statedb = env.State()
pc int = program.mapping[pcstart]
caller = contract.caller
statedb = env.Db()
pc int = program.mapping[pcstart]
instrCount = 0
jump = func(to *big.Int) error {
if !validDest(program.destinations, to) {
nop := context.GetOp(to.Uint64())
nop := contract.GetOp(to.Uint64())
return fmt.Errorf("invalid jump destination (%v) %v", nop, to)
}
@ -300,18 +318,28 @@ func runProgram(program *Program, pcstart uint64, mem *Memory, stack *stack, env
}
)
if glog.V(logger.Debug) {
glog.Infof("running JIT program %x\n", program.Id[:4])
tstart := time.Now()
defer func() {
glog.Infof("JIT program %x done. time: %v instrc: %v\n", program.Id[:4], time.Since(tstart), instrCount)
}()
}
for pc < len(program.instructions) {
instrCount++
instr := program.instructions[pc]
// calculate the new memory size and gas price for the current executing opcode
newMemSize, cost, err := jitCalculateGasAndSize(env, context, caller, instr, statedb, mem, stack)
newMemSize, cost, err := jitCalculateGasAndSize(env, contract, caller, instr, statedb, mem, stack)
if err != nil {
return nil, err
}
// Use the calculated gas. When insufficient gas is present, use all gas and return an
// Out Of Gas error
if !context.UseGas(cost) {
if !contract.UseGas(cost) {
return nil, OutOfGasError
}
// Resize the memory calculated previously
@ -338,27 +366,27 @@ func runProgram(program *Program, pcstart uint64, mem *Memory, stack *stack, env
offset, size := stack.pop(), stack.pop()
ret := mem.GetPtr(offset.Int64(), size.Int64())
return context.Return(ret), nil
return contract.Return(ret), nil
case SUICIDE:
instr.fn(instr, env, context, mem, stack)
instr.fn(instr, nil, env, contract, mem, stack)
return context.Return(nil), nil
return contract.Return(nil), nil
case STOP:
return context.Return(nil), nil
return contract.Return(nil), nil
default:
if instr.fn == nil {
return nil, fmt.Errorf("Invalid opcode %x", instr.op)
}
instr.fn(instr, env, context, mem, stack)
instr.fn(instr, nil, env, contract, mem, stack)
}
pc++
}
context.Input = nil
contract.Input = nil
return context.Return(nil), nil
return contract.Return(nil), nil
}
// validDest checks if the given distination is a valid one given the
@ -375,7 +403,7 @@ func validDest(dests map[uint64]struct{}, dest *big.Int) bool {
// jitCalculateGasAndSize calculates the required given the opcode and stack items calculates the new memorysize for
// the operation. This does not reduce gas or resizes the memory.
func jitCalculateGasAndSize(env Environment, context *Context, caller ContextRef, instr instruction, statedb *state.StateDB, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
func jitCalculateGasAndSize(env Environment, contract *Contract, caller ContractRef, instr instruction, statedb Database, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
var (
gas = new(big.Int)
newMemSize *big.Int = new(big.Int)
@ -426,27 +454,25 @@ func jitCalculateGasAndSize(env Environment, context *Context, caller ContextRef
var g *big.Int
y, x := stack.data[stack.len()-2], stack.data[stack.len()-1]
val := statedb.GetState(context.Address(), common.BigToHash(x))
val := statedb.GetState(contract.Address(), common.BigToHash(x))
// This checks for 3 scenario's and calculates gas accordingly
// 1. From a zero-value address to a non-zero value (NEW VALUE)
// 2. From a non-zero value address to a zero-value address (DELETE)
// 3. From a nen-zero to a non-zero (CHANGE)
if common.EmptyHash(val) && !common.EmptyHash(common.BigToHash(y)) {
// 0 => non 0
g = params.SstoreSetGas
} else if !common.EmptyHash(val) && common.EmptyHash(common.BigToHash(y)) {
statedb.Refund(params.SstoreRefundGas)
statedb.AddRefund(params.SstoreRefundGas)
g = params.SstoreClearGas
} else {
// non 0 => non 0 (or 0 => 0)
g = params.SstoreClearGas
}
gas.Set(g)
case SUICIDE:
if !statedb.IsDeleted(context.Address()) {
statedb.Refund(params.SuicideRefundGas)
if !statedb.IsDeleted(contract.Address()) {
statedb.AddRefund(params.SuicideRefundGas)
}
case MLOAD:
newMemSize = calcMemSize(stack.peek(), u256(32))
@ -483,7 +509,8 @@ func jitCalculateGasAndSize(env Environment, context *Context, caller ContextRef
gas.Add(gas, stack.data[stack.len()-1])
if op == CALL {
if env.State().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
//if env.Db().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
if !env.Db().Exist(common.BigToAddress(stack.data[stack.len()-2])) {
gas.Add(gas, params.CallNewAccountGas)
}
}
@ -497,29 +524,7 @@ func jitCalculateGasAndSize(env Environment, context *Context, caller ContextRef
newMemSize = common.BigMax(x, y)
}
if newMemSize.Cmp(common.Big0) > 0 {
newMemSizeWords := toWordSize(newMemSize)
newMemSize.Mul(newMemSizeWords, u256(32))
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
// be careful reusing variables here when changing.
// The order has been optimised to reduce allocation
oldSize := toWordSize(big.NewInt(int64(mem.Len())))
pow := new(big.Int).Exp(oldSize, common.Big2, Zero)
linCoef := oldSize.Mul(oldSize, params.MemoryGas)
quadCoef := new(big.Int).Div(pow, params.QuadCoeffDiv)
oldTotalFee := new(big.Int).Add(linCoef, quadCoef)
pow.Exp(newMemSizeWords, common.Big2, Zero)
linCoef = linCoef.Mul(newMemSizeWords, params.MemoryGas)
quadCoef = quadCoef.Div(pow, params.QuadCoeffDiv)
newTotalFee := linCoef.Add(linCoef, quadCoef)
fee := newTotalFee.Sub(newTotalFee, oldTotalFee)
gas.Add(gas, fee)
}
}
quadMemGas(mem, newMemSize, gas)
return newMemSize, gas, nil
}

114
core/vm/jit_test.go
View File

@ -21,45 +21,42 @@ import (
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
)
const maxRun = 1000
type vmBench struct {
precompile bool // compile prior to executing
nojit bool // ignore jit (sets DisbaleJit = true
forcejit bool // forces the jit, precompile is ignored
func TestCompiling(t *testing.T) {
prog := NewProgram([]byte{0x60, 0x10})
err := CompileProgram(prog)
if err != nil {
t.Error("didn't expect compile error")
}
code []byte
input []byte
if len(prog.instructions) != 1 {
t.Error("exected 1 compiled instruction, got", len(prog.instructions))
}
}
func runVmBench(test vmBench, b *testing.B) {
db, _ := ethdb.NewMemDatabase()
sender := state.NewStateObject(common.Address{}, db)
func TestResetInput(t *testing.T) {
var sender account
if test.precompile && !test.forcejit {
NewProgram(test.code)
}
env := NewEnv()
contract := NewContract(sender, sender, big.NewInt(100), big.NewInt(10000), big.NewInt(0))
contract.CodeAddr = &common.Address{}
EnableJit = !test.nojit
ForceJit = test.forcejit
program := NewProgram([]byte{})
RunProgram(program, env, contract, []byte{0xbe, 0xef})
if contract.Input != nil {
t.Errorf("expected input to be nil, got %x", contract.Input)
}
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
context := NewContext(sender, sender, big.NewInt(100), big.NewInt(10000), big.NewInt(0))
context.Code = test.code
context.CodeAddr = &common.Address{}
_, err := New(env).Run(context, test.input)
if err != nil {
b.Error(err)
b.FailNow()
}
func TestPcMappingToInstruction(t *testing.T) {
program := NewProgram([]byte{byte(PUSH2), 0xbe, 0xef, byte(ADD)})
CompileProgram(program)
if program.mapping[3] != 1 {
t.Error("expected mapping PC 4 to me instr no. 2, got", program.mapping[4])
}
}
@ -74,6 +71,51 @@ func BenchmarkPushes(b *testing.B) {
runVmBench(benchmarks["pushes"], b)
}
type vmBench struct {
precompile bool // compile prior to executing
nojit bool // ignore jit (sets DisbaleJit = true
forcejit bool // forces the jit, precompile is ignored
code []byte
input []byte
}
type account struct{}
func (account) SubBalance(amount *big.Int) {}
func (account) AddBalance(amount *big.Int) {}
func (account) SetBalance(*big.Int) {}
func (account) SetNonce(uint64) {}
func (account) Balance() *big.Int { return nil }
func (account) Address() common.Address { return common.Address{} }
func (account) ReturnGas(*big.Int, *big.Int) {}
func (account) SetCode([]byte) {}
func runVmBench(test vmBench, b *testing.B) {
var sender account
if test.precompile && !test.forcejit {
NewProgram(test.code)
}
env := NewEnv()
EnableJit = !test.nojit
ForceJit = test.forcejit
b.ResetTimer()
for i := 0; i < b.N; i++ {
context := NewContract(sender, sender, big.NewInt(100), big.NewInt(10000), big.NewInt(0))
context.Code = test.code
context.CodeAddr = &common.Address{}
_, err := New(env).Run(context, test.input)
if err != nil {
b.Error(err)
b.FailNow()
}
}
}
type Env struct {
gasLimit *big.Int
depth int
@ -93,30 +135,32 @@ func (self *Env) StructLogs() []StructLog {
//func (self *Env) PrevHash() []byte { return self.parent }
func (self *Env) Coinbase() common.Address { return common.Address{} }
func (self *Env) MakeSnapshot() Database { return nil }
func (self *Env) SetSnapshot(Database) {}
func (self *Env) Time() *big.Int { return big.NewInt(time.Now().Unix()) }
func (self *Env) Difficulty() *big.Int { return big.NewInt(0) }
func (self *Env) State() *state.StateDB { return nil }
func (self *Env) Db() Database { return nil }
func (self *Env) GasLimit() *big.Int { return self.gasLimit }
func (self *Env) VmType() Type { return StdVmTy }
func (self *Env) GetHash(n uint64) common.Hash {
return common.BytesToHash(crypto.Sha3([]byte(big.NewInt(int64(n)).String())))
}
func (self *Env) AddLog(log *state.Log) {
func (self *Env) AddLog(log *Log) {
}
func (self *Env) Depth() int { return self.depth }
func (self *Env) SetDepth(i int) { self.depth = i }
func (self *Env) CanTransfer(from Account, balance *big.Int) bool {
return from.Balance().Cmp(balance) >= 0
func (self *Env) CanTransfer(from common.Address, balance *big.Int) bool {
return true
}
func (self *Env) Transfer(from, to Account, amount *big.Int) error {
return nil
}
func (self *Env) Call(caller ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
func (self *Env) Call(caller ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
return nil, nil
}
func (self *Env) CallCode(caller ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
func (self *Env) CallCode(caller ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
return nil, nil
}
func (self *Env) Create(caller ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef) {
return nil, nil, nil
func (self *Env) Create(caller ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
return nil, common.Address{}, nil
}

143
core/vm/jump_table.go Normal file
View File

@ -0,0 +1,143 @@
package vm
import "math/big"
type jumpPtr struct {
fn instrFn
valid bool
}
var jumpTable [256]jumpPtr
func init() {
jumpTable[ADD] = jumpPtr{opAdd, true}
jumpTable[SUB] = jumpPtr{opSub, true}
jumpTable[MUL] = jumpPtr{opMul, true}
jumpTable[DIV] = jumpPtr{opDiv, true}
jumpTable[SDIV] = jumpPtr{opSdiv, true}
jumpTable[MOD] = jumpPtr{opMod, true}
jumpTable[SMOD] = jumpPtr{opSmod, true}
jumpTable[EXP] = jumpPtr{opExp, true}
jumpTable[SIGNEXTEND] = jumpPtr{opSignExtend, true}
jumpTable[NOT] = jumpPtr{opNot, true}
jumpTable[LT] = jumpPtr{opLt, true}
jumpTable[GT] = jumpPtr{opGt, true}
jumpTable[SLT] = jumpPtr{opSlt, true}
jumpTable[SGT] = jumpPtr{opSgt, true}
jumpTable[EQ] = jumpPtr{opEq, true}
jumpTable[ISZERO] = jumpPtr{opIszero, true}
jumpTable[AND] = jumpPtr{opAnd, true}
jumpTable[OR] = jumpPtr{opOr, true}
jumpTable[XOR] = jumpPtr{opXor, true}
jumpTable[BYTE] = jumpPtr{opByte, true}
jumpTable[ADDMOD] = jumpPtr{opAddmod, true}
jumpTable[MULMOD] = jumpPtr{opMulmod, true}
jumpTable[SHA3] = jumpPtr{opSha3, true}
jumpTable[ADDRESS] = jumpPtr{opAddress, true}
jumpTable[BALANCE] = jumpPtr{opBalance, true}
jumpTable[ORIGIN] = jumpPtr{opOrigin, true}
jumpTable[CALLER] = jumpPtr{opCaller, true}
jumpTable[CALLVALUE] = jumpPtr{opCallValue, true}
jumpTable[CALLDATALOAD] = jumpPtr{opCalldataLoad, true}
jumpTable[CALLDATASIZE] = jumpPtr{opCalldataSize, true}
jumpTable[CALLDATACOPY] = jumpPtr{opCalldataCopy, true}
jumpTable[CODESIZE] = jumpPtr{opCodeSize, true}
jumpTable[EXTCODESIZE] = jumpPtr{opExtCodeSize, true}
jumpTable[CODECOPY] = jumpPtr{opCodeCopy, true}
jumpTable[EXTCODECOPY] = jumpPtr{opExtCodeCopy, true}
jumpTable[GASPRICE] = jumpPtr{opGasprice, true}
jumpTable[BLOCKHASH] = jumpPtr{opBlockhash, true}
jumpTable[COINBASE] = jumpPtr{opCoinbase, true}
jumpTable[TIMESTAMP] = jumpPtr{opTimestamp, true}
jumpTable[NUMBER] = jumpPtr{opNumber, true}
jumpTable[DIFFICULTY] = jumpPtr{opDifficulty, true}
jumpTable[GASLIMIT] = jumpPtr{opGasLimit, true}
jumpTable[POP] = jumpPtr{opPop, true}
jumpTable[MLOAD] = jumpPtr{opMload, true}
jumpTable[MSTORE] = jumpPtr{opMstore, true}
jumpTable[MSTORE8] = jumpPtr{opMstore8, true}
jumpTable[SLOAD] = jumpPtr{opSload, true}
jumpTable[SSTORE] = jumpPtr{opSstore, true}
jumpTable[JUMPDEST] = jumpPtr{opJumpdest, true}
jumpTable[PC] = jumpPtr{nil, true}
jumpTable[MSIZE] = jumpPtr{opMsize, true}
jumpTable[GAS] = jumpPtr{opGas, true}
jumpTable[CREATE] = jumpPtr{opCreate, true}
jumpTable[CALL] = jumpPtr{opCall, true}
jumpTable[CALLCODE] = jumpPtr{opCallCode, true}
jumpTable[LOG0] = jumpPtr{makeLog(0), true}
jumpTable[LOG1] = jumpPtr{makeLog(1), true}
jumpTable[LOG2] = jumpPtr{makeLog(2), true}
jumpTable[LOG3] = jumpPtr{makeLog(3), true}
jumpTable[LOG4] = jumpPtr{makeLog(4), true}
jumpTable[SWAP1] = jumpPtr{makeSwap(1), true}
jumpTable[SWAP2] = jumpPtr{makeSwap(2), true}
jumpTable[SWAP3] = jumpPtr{makeSwap(3), true}
jumpTable[SWAP4] = jumpPtr{makeSwap(4), true}
jumpTable[SWAP5] = jumpPtr{makeSwap(5), true}
jumpTable[SWAP6] = jumpPtr{makeSwap(6), true}
jumpTable[SWAP7] = jumpPtr{makeSwap(7), true}
jumpTable[SWAP8] = jumpPtr{makeSwap(8), true}
jumpTable[SWAP9] = jumpPtr{makeSwap(9), true}
jumpTable[SWAP10] = jumpPtr{makeSwap(10), true}
jumpTable[SWAP11] = jumpPtr{makeSwap(11), true}
jumpTable[SWAP12] = jumpPtr{makeSwap(12), true}
jumpTable[SWAP13] = jumpPtr{makeSwap(13), true}
jumpTable[SWAP14] = jumpPtr{makeSwap(14), true}
jumpTable[SWAP15] = jumpPtr{makeSwap(15), true}
jumpTable[SWAP16] = jumpPtr{makeSwap(16), true}
jumpTable[PUSH1] = jumpPtr{makePush(1, big.NewInt(1)), true}
jumpTable[PUSH2] = jumpPtr{makePush(2, big.NewInt(2)), true}
jumpTable[PUSH3] = jumpPtr{makePush(3, big.NewInt(3)), true}
jumpTable[PUSH4] = jumpPtr{makePush(4, big.NewInt(4)), true}
jumpTable[PUSH5] = jumpPtr{makePush(5, big.NewInt(5)), true}
jumpTable[PUSH6] = jumpPtr{makePush(6, big.NewInt(6)), true}
jumpTable[PUSH7] = jumpPtr{makePush(7, big.NewInt(7)), true}
jumpTable[PUSH8] = jumpPtr{makePush(8, big.NewInt(8)), true}
jumpTable[PUSH9] = jumpPtr{makePush(9, big.NewInt(9)), true}
jumpTable[PUSH10] = jumpPtr{makePush(10, big.NewInt(10)), true}
jumpTable[PUSH11] = jumpPtr{makePush(11, big.NewInt(11)), true}
jumpTable[PUSH12] = jumpPtr{makePush(12, big.NewInt(12)), true}
jumpTable[PUSH13] = jumpPtr{makePush(13, big.NewInt(13)), true}
jumpTable[PUSH14] = jumpPtr{makePush(14, big.NewInt(14)), true}
jumpTable[PUSH15] = jumpPtr{makePush(15, big.NewInt(15)), true}
jumpTable[PUSH16] = jumpPtr{makePush(16, big.NewInt(16)), true}
jumpTable[PUSH17] = jumpPtr{makePush(17, big.NewInt(17)), true}
jumpTable[PUSH18] = jumpPtr{makePush(18, big.NewInt(18)), true}
jumpTable[PUSH19] = jumpPtr{makePush(19, big.NewInt(19)), true}
jumpTable[PUSH20] = jumpPtr{makePush(20, big.NewInt(20)), true}
jumpTable[PUSH21] = jumpPtr{makePush(21, big.NewInt(21)), true}
jumpTable[PUSH22] = jumpPtr{makePush(22, big.NewInt(22)), true}
jumpTable[PUSH23] = jumpPtr{makePush(23, big.NewInt(23)), true}
jumpTable[PUSH24] = jumpPtr{makePush(24, big.NewInt(24)), true}
jumpTable[PUSH25] = jumpPtr{makePush(25, big.NewInt(25)), true}
jumpTable[PUSH26] = jumpPtr{makePush(26, big.NewInt(26)), true}
jumpTable[PUSH27] = jumpPtr{makePush(27, big.NewInt(27)), true}
jumpTable[PUSH28] = jumpPtr{makePush(28, big.NewInt(28)), true}
jumpTable[PUSH29] = jumpPtr{makePush(29, big.NewInt(29)), true}
jumpTable[PUSH30] = jumpPtr{makePush(30, big.NewInt(30)), true}
jumpTable[PUSH31] = jumpPtr{makePush(31, big.NewInt(31)), true}
jumpTable[PUSH32] = jumpPtr{makePush(32, big.NewInt(32)), true}
jumpTable[DUP1] = jumpPtr{makeDup(1), true}
jumpTable[DUP2] = jumpPtr{makeDup(2), true}
jumpTable[DUP3] = jumpPtr{makeDup(3), true}
jumpTable[DUP4] = jumpPtr{makeDup(4), true}
jumpTable[DUP5] = jumpPtr{makeDup(5), true}
jumpTable[DUP6] = jumpPtr{makeDup(6), true}
jumpTable[DUP7] = jumpPtr{makeDup(7), true}
jumpTable[DUP8] = jumpPtr{makeDup(8), true}
jumpTable[DUP9] = jumpPtr{makeDup(9), true}
jumpTable[DUP10] = jumpPtr{makeDup(10), true}
jumpTable[DUP11] = jumpPtr{makeDup(11), true}
jumpTable[DUP12] = jumpPtr{makeDup(12), true}
jumpTable[DUP13] = jumpPtr{makeDup(13), true}
jumpTable[DUP14] = jumpPtr{makeDup(14), true}
jumpTable[DUP15] = jumpPtr{makeDup(15), true}
jumpTable[DUP16] = jumpPtr{makeDup(16), true}
jumpTable[RETURN] = jumpPtr{nil, true}
jumpTable[SUICIDE] = jumpPtr{nil, true}
jumpTable[JUMP] = jumpPtr{nil, true}
jumpTable[JUMPI] = jumpPtr{nil, true}
jumpTable[STOP] = jumpPtr{nil, true}
}

2
core/state/log.go → core/vm/log.go
View File

@ -14,7 +14,7 @@
// 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
package vm
import (
"fmt"

1
core/vm/logger.go
View File

@ -24,6 +24,7 @@ import (
"github.com/ethereum/go-ethereum/common"
)
// StdErrFormat formats a slice of StructLogs to human readable format
func StdErrFormat(logs []StructLog) {
fmt.Fprintf(os.Stderr, "VM STAT %d OPs\n", len(logs))
for _, log := range logs {

7
core/vm/memory.go
View File

@ -18,6 +18,7 @@ package vm
import "fmt"
// Memory implements ethereum RAM backed by a simple byte slice
type Memory struct {
store []byte
}
@ -26,6 +27,7 @@ func NewMemory() *Memory {
return &Memory{nil}
}
// Set sets offset + size to value
func (m *Memory) Set(offset, size uint64, value []byte) {
// length of store may never be less than offset + size.
// The store should be resized PRIOR to setting the memory
@ -40,12 +42,14 @@ func (m *Memory) Set(offset, size uint64, value []byte) {
}
}
// Resize resizes the memory to size
func (m *Memory) Resize(size uint64) {
if uint64(m.Len()) < size {
m.store = append(m.store, make([]byte, size-uint64(m.Len()))...)
}
}
// Get returns offset + size as a new slice
func (self *Memory) Get(offset, size int64) (cpy []byte) {
if size == 0 {
return nil
@ -61,6 +65,7 @@ func (self *Memory) Get(offset, size int64) (cpy []byte) {
return
}
// GetPtr returns the offset + size
func (self *Memory) GetPtr(offset, size int64) []byte {
if size == 0 {
return nil
@ -73,10 +78,12 @@ func (self *Memory) GetPtr(offset, size int64) []byte {
return nil
}
// Len returns the length of the backing slice
func (m *Memory) Len() int {
return len(m.store)
}
// Data returns the backing slice
func (m *Memory) Data() []byte {
return m.store
}

2
core/vm/opcodes.go
View File

@ -20,9 +20,9 @@ import (
"fmt"
)
// OpCode is an EVM opcode
type OpCode byte
// Op codes
const (
// 0x0 range - arithmetic ops
STOP OpCode = iota

3
core/vm/virtual_machine.go
View File

@ -16,7 +16,8 @@
package vm
// VirtualMachine is an EVM interface
type VirtualMachine interface {
Env() Environment
Run(context *Context, data []byte) ([]byte, error)
Run(*Contract, []byte) ([]byte, error)
}

691
core/vm/vm.go
View File

@ -14,33 +14,32 @@
// 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 implements the Ethereum Virtual Machine.
package vm
import (
"fmt"
"math/big"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
)
// Vm implements VirtualMachine
// Vm is an EVM and implements VirtualMachine
type Vm struct {
env Environment
}
// New returns a new Virtual Machine
// New returns a new Vm
func New(env Environment) *Vm {
return &Vm{env: env}
}
// Run loops and evaluates the contract's code with the given input data
func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
func (self *Vm) Run(contract *Contract, input []byte) (ret []byte, err error) {
self.env.SetDepth(self.env.Depth() + 1)
defer self.env.SetDepth(self.env.Depth() - 1)
@ -48,42 +47,48 @@ func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
defer func() {
if err != nil {
// In case of a VM exception (known exceptions) all gas consumed (panics NOT included).
context.UseGas(context.Gas)
contract.UseGas(contract.Gas)
ret = context.Return(nil)
ret = contract.Return(nil)
}
}()
if context.CodeAddr != nil {
if p := Precompiled[context.CodeAddr.Str()]; p != nil {
return self.RunPrecompiled(p, input, context)
if contract.CodeAddr != nil {
if p := Precompiled[contract.CodeAddr.Str()]; p != nil {
return self.RunPrecompiled(p, input, contract)
}
}
// Don't bother with the execution if there's no code.
if len(contract.Code) == 0 {
return contract.Return(nil), nil
}
var (
codehash = crypto.Sha3Hash(context.Code) // codehash is used when doing jump dest caching
codehash = crypto.Sha3Hash(contract.Code) // codehash is used when doing jump dest caching
program *Program
)
if EnableJit {
// Fetch program status.
// * If ready run using JIT
// * If unknown, compile in a seperate goroutine
// * If forced wait for compilation and run once done
if status := GetProgramStatus(codehash); status == progReady {
return RunProgram(GetProgram(codehash), self.env, context, input)
} else if status == progUnknown {
// If the JIT is enabled check the status of the JIT program,
// if it doesn't exist compile a new program in a seperate
// goroutine or wait for compilation to finish if the JIT is
// forced.
switch GetProgramStatus(codehash) {
case progReady:
return RunProgram(GetProgram(codehash), self.env, contract, input)
case progUnknown:
if ForceJit {
// Create and compile program
program = NewProgram(context.Code)
program = NewProgram(contract.Code)
perr := CompileProgram(program)
if perr == nil {
return RunProgram(program, self.env, context, input)
return RunProgram(program, self.env, contract, input)
}
glog.V(logger.Info).Infoln("error compiling program", err)
} else {
// create and compile the program. Compilation
// is done in a seperate goroutine
program = NewProgram(context.Code)
program = NewProgram(contract.Code)
go func() {
err := CompileProgram(program)
if err != nil {
@ -96,15 +101,14 @@ func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
}
var (
caller = context.caller
code = context.Code
value = context.value
price = context.Price
caller = contract.caller
code = contract.Code
instrCount = 0
op OpCode // current opcode
mem = NewMemory() // bound memory
stack = newstack() // local stack
statedb = self.env.State() // current state
op OpCode // current opcode
mem = NewMemory() // bound memory
stack = newstack() // local stack
statedb = self.env.Db() // current state
// 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 to be uint256. Pratically much less so feasible.
pc = uint64(0) // program counter
@ -112,8 +116,8 @@ func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
// jump evaluates and checks whether the given jump destination is a valid one
// if valid move the `pc` otherwise return an error.
jump = func(from uint64, to *big.Int) error {
if !context.jumpdests.has(codehash, code, to) {
nop := context.GetOp(to.Uint64())
if !contract.jumpdests.has(codehash, code, to) {
nop := contract.GetOp(to.Uint64())
return fmt.Errorf("invalid jump destination (%v) %v", nop, to)
}
@ -125,552 +129,92 @@ func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
newMemSize *big.Int
cost *big.Int
)
contract.Input = input
// User defer pattern to check for an error and, based on the error being nil or not, use all gas and return.
defer func() {
if err != nil {
self.log(pc, op, context.Gas, cost, mem, stack, context, err)
self.log(pc, op, contract.Gas, cost, mem, stack, contract, err)
}
}()
// Don't bother with the execution if there's no code.
if len(code) == 0 {
return context.Return(nil), nil
if glog.V(logger.Debug) {
glog.Infof("running byte VM %x\n", codehash[:4])
tstart := time.Now()
defer func() {
glog.Infof("byte VM %x done. time: %v instrc: %v\n", codehash[:4], time.Since(tstart), instrCount)
}()
}
for {
// Overhead of the atomic read might not be worth it
/* TODO this still causes a few issues in the tests
if program != nil && progStatus(atomic.LoadInt32(&program.status)) == progReady {
// move execution
glog.V(logger.Info).Infoln("Moved execution to JIT")
return runProgram(program, pc, mem, stack, self.env, context, input)
}
for ; ; instrCount++ {
/*
if EnableJit && it%100 == 0 {
if program != nil && progStatus(atomic.LoadInt32(&program.status)) == progReady {
// move execution
fmt.Println("moved", it)
glog.V(logger.Info).Infoln("Moved execution to JIT")
return runProgram(program, pc, mem, stack, self.env, contract, input)
}
}
*/
// The base for all big integer arithmetic
base := new(big.Int)
// Get the memory location of pc
op = context.GetOp(pc)
op = contract.GetOp(pc)
// calculate the new memory size and gas price for the current executing opcode
newMemSize, cost, err = calculateGasAndSize(self.env, context, caller, op, statedb, mem, stack)
newMemSize, cost, err = calculateGasAndSize(self.env, contract, caller, op, statedb, mem, stack)
if err != nil {
return nil, err
}
// Use the calculated gas. When insufficient gas is present, use all gas and return an
// Out Of Gas error
if !context.UseGas(cost) {
if !contract.UseGas(cost) {
return nil, OutOfGasError
}
// Resize the memory calculated previously
mem.Resize(newMemSize.Uint64())
// Add a log message
self.log(pc, op, context.Gas, cost, mem, stack, context, nil)
self.log(pc, op, contract.Gas, cost, mem, stack, contract, nil)
switch op {
case ADD:
x, y := stack.pop(), stack.pop()
base.Add(x, y)
U256(base)
// pop result back on the stack
stack.push(base)
case SUB:
x, y := stack.pop(), stack.pop()
base.Sub(x, y)
U256(base)
// pop result back on the stack
stack.push(base)
case MUL:
x, y := stack.pop(), stack.pop()
base.Mul(x, y)
U256(base)
// pop result back on the stack
stack.push(base)
case DIV:
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) != 0 {
base.Div(x, y)
}
U256(base)
// pop result back on the stack
stack.push(base)
case SDIV:
x, y := S256(stack.pop()), S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
if opPtr := jumpTable[op]; opPtr.valid {
if opPtr.fn != nil {
opPtr.fn(instruction{}, &pc, self.env, contract, mem, stack)
} else {
n := new(big.Int)
if new(big.Int).Mul(x, y).Cmp(common.Big0) < 0 {
n.SetInt64(-1)
} else {
n.SetInt64(1)
switch op {
case PC:
opPc(instruction{data: new(big.Int).SetUint64(pc)}, &pc, self.env, contract, mem, stack)
case JUMP:
if err := jump(pc, stack.pop()); err != nil {
return nil, err
}
continue
case JUMPI:
pos, cond := stack.pop(), stack.pop()
if cond.Cmp(common.BigTrue) >= 0 {
if err := jump(pc, pos); err != nil {
return nil, err
}
continue
}
case RETURN:
offset, size := stack.pop(), stack.pop()
ret := mem.GetPtr(offset.Int64(), size.Int64())
return contract.Return(ret), nil
case SUICIDE:
opSuicide(instruction{}, nil, self.env, contract, mem, stack)
fallthrough
case STOP: // Stop the contract
return contract.Return(nil), nil
}
base.Div(x.Abs(x), y.Abs(y)).Mul(base, n)
U256(base)
}
stack.push(base)
case MOD:
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
base.Mod(x, y)
}
U256(base)
stack.push(base)
case SMOD:
x, y := S256(stack.pop()), S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
n := new(big.Int)
if x.Cmp(common.Big0) < 0 {
n.SetInt64(-1)
} else {
n.SetInt64(1)
}
base.Mod(x.Abs(x), y.Abs(y)).Mul(base, n)
U256(base)
}
stack.push(base)
case EXP:
x, y := stack.pop(), stack.pop()
base.Exp(x, y, Pow256)
U256(base)
stack.push(base)
case SIGNEXTEND:
back := stack.pop()
if back.Cmp(big.NewInt(31)) < 0 {
bit := uint(back.Uint64()*8 + 7)
num := stack.pop()
mask := new(big.Int).Lsh(common.Big1, bit)
mask.Sub(mask, common.Big1)
if common.BitTest(num, int(bit)) {
num.Or(num, mask.Not(mask))
} else {
num.And(num, mask)
}
num = U256(num)
stack.push(num)
}
case NOT:
stack.push(U256(new(big.Int).Not(stack.pop())))
case LT:
x, y := stack.pop(), stack.pop()
// x < y
if x.Cmp(y) < 0 {
stack.push(common.BigTrue)
} else {
stack.push(common.BigFalse)
}
case GT:
x, y := stack.pop(), stack.pop()
// x > y
if x.Cmp(y) > 0 {
stack.push(common.BigTrue)
} else {
stack.push(common.BigFalse)
}
case SLT:
x, y := S256(stack.pop()), S256(stack.pop())
// x < y
if x.Cmp(S256(y)) < 0 {
stack.push(common.BigTrue)
} else {
stack.push(common.BigFalse)
}
case SGT:
x, y := S256(stack.pop()), S256(stack.pop())
// x > y
if x.Cmp(y) > 0 {
stack.push(common.BigTrue)
} else {
stack.push(common.BigFalse)
}
case EQ:
x, y := stack.pop(), stack.pop()
// x == y
if x.Cmp(y) == 0 {
stack.push(common.BigTrue)
} else {
stack.push(common.BigFalse)
}
case ISZERO:
x := stack.pop()
if x.Cmp(common.BigFalse) > 0 {
stack.push(common.BigFalse)
} else {
stack.push(common.BigTrue)
}
case AND:
x, y := stack.pop(), stack.pop()
stack.push(base.And(x, y))
case OR:
x, y := stack.pop(), stack.pop()
stack.push(base.Or(x, y))
case XOR:
x, y := stack.pop(), stack.pop()
stack.push(base.Xor(x, y))
case BYTE:
th, val := stack.pop(), stack.pop()
if th.Cmp(big.NewInt(32)) < 0 {
byt := big.NewInt(int64(common.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
base.Set(byt)
} else {
base.Set(common.BigFalse)
}
stack.push(base)
case ADDMOD:
x := stack.pop()
y := stack.pop()
z := stack.pop()
if z.Cmp(Zero) > 0 {
add := new(big.Int).Add(x, y)
base.Mod(add, z)
base = U256(base)
}
stack.push(base)
case MULMOD:
x := stack.pop()
y := stack.pop()
z := stack.pop()
if z.Cmp(Zero) > 0 {
mul := new(big.Int).Mul(x, y)
base.Mod(mul, z)
U256(base)
}
stack.push(base)
case SHA3:
offset, size := stack.pop(), stack.pop()
data := crypto.Sha3(mem.Get(offset.Int64(), size.Int64()))
stack.push(common.BigD(data))
case ADDRESS:
stack.push(common.Bytes2Big(context.Address().Bytes()))
case BALANCE:
addr := common.BigToAddress(stack.pop())
balance := statedb.GetBalance(addr)
stack.push(new(big.Int).Set(balance))
case ORIGIN:
origin := self.env.Origin()
stack.push(origin.Big())
case CALLER:
caller := context.caller.Address()
stack.push(common.Bytes2Big(caller.Bytes()))
case CALLVALUE:
stack.push(new(big.Int).Set(value))
case CALLDATALOAD:
data := getData(input, stack.pop(), common.Big32)
stack.push(common.Bytes2Big(data))
case CALLDATASIZE:
l := int64(len(input))
stack.push(big.NewInt(l))
case CALLDATACOPY:
var (
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
data := getData(input, cOff, l)
mem.Set(mOff.Uint64(), l.Uint64(), data)
case CODESIZE, EXTCODESIZE:
var code []byte
if op == EXTCODESIZE {
addr := common.BigToAddress(stack.pop())
code = statedb.GetCode(addr)
} else {
code = context.Code
}
l := big.NewInt(int64(len(code)))
stack.push(l)
case CODECOPY, EXTCODECOPY:
var code []byte
if op == EXTCODECOPY {
addr := common.BigToAddress(stack.pop())
code = statedb.GetCode(addr)
} else {
code = context.Code
}
var (
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
codeCopy := getData(code, cOff, l)
mem.Set(mOff.Uint64(), l.Uint64(), codeCopy)
case GASPRICE:
stack.push(new(big.Int).Set(context.Price))
case BLOCKHASH:
num := stack.pop()
n := new(big.Int).Sub(self.env.BlockNumber(), common.Big257)
if num.Cmp(n) > 0 && num.Cmp(self.env.BlockNumber()) < 0 {
stack.push(self.env.GetHash(num.Uint64()).Big())
} else {
stack.push(common.Big0)
}
case COINBASE:
coinbase := self.env.Coinbase()
stack.push(coinbase.Big())
case TIMESTAMP:
time := self.env.Time()
stack.push(new(big.Int).Set(time))
case NUMBER:
number := self.env.BlockNumber()
stack.push(U256(number))
case DIFFICULTY:
difficulty := self.env.Difficulty()
stack.push(new(big.Int).Set(difficulty))
case GASLIMIT:
stack.push(new(big.Int).Set(self.env.GasLimit()))
case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
size := uint64(op - PUSH1 + 1)
byts := getData(code, new(big.Int).SetUint64(pc+1), new(big.Int).SetUint64(size))
// push value to stack
stack.push(common.Bytes2Big(byts))
pc += size
case POP:
stack.pop()
case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
n := int(op - DUP1 + 1)
stack.dup(n)
case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
n := int(op - SWAP1 + 2)
stack.swap(n)
case LOG0, LOG1, LOG2, LOG3, LOG4:
n := int(op - LOG0)
topics := make([]common.Hash, n)
mStart, mSize := stack.pop(), stack.pop()
for i := 0; i < n; i++ {
topics[i] = common.BigToHash(stack.pop())
}
data := mem.Get(mStart.Int64(), mSize.Int64())
log := state.NewLog(context.Address(), topics, data, self.env.BlockNumber().Uint64())
self.env.AddLog(log)
case MLOAD:
offset := stack.pop()
val := common.BigD(mem.Get(offset.Int64(), 32))
stack.push(val)
case MSTORE:
// pop value of the stack
mStart, val := stack.pop(), stack.pop()
mem.Set(mStart.Uint64(), 32, common.BigToBytes(val, 256))
case MSTORE8:
off, val := stack.pop().Int64(), stack.pop().Int64()
mem.store[off] = byte(val & 0xff)
case SLOAD:
loc := common.BigToHash(stack.pop())
val := statedb.GetState(context.Address(), loc).Big()
stack.push(val)
case SSTORE:
loc := common.BigToHash(stack.pop())
val := stack.pop()
statedb.SetState(context.Address(), loc, common.BigToHash(val))
case JUMP:
if err := jump(pc, stack.pop()); err != nil {
return nil, err
}
continue
case JUMPI:
pos, cond := stack.pop(), stack.pop()
if cond.Cmp(common.BigTrue) >= 0 {
if err := jump(pc, pos); err != nil {
return nil, err
}
continue
}
case JUMPDEST:
case PC:
stack.push(new(big.Int).SetUint64(pc))
case MSIZE:
stack.push(big.NewInt(int64(mem.Len())))
case GAS:
stack.push(new(big.Int).Set(context.Gas))
case CREATE:
var (
value = stack.pop()
offset, size = stack.pop(), stack.pop()
input = mem.Get(offset.Int64(), size.Int64())
gas = new(big.Int).Set(context.Gas)
addr common.Address
)
context.UseGas(context.Gas)
ret, suberr, ref := self.env.Create(context, input, gas, price, value)
if suberr != nil {
stack.push(common.BigFalse)
} else {
// gas < len(ret) * CreateDataGas == NO_CODE
dataGas := big.NewInt(int64(len(ret)))
dataGas.Mul(dataGas, params.CreateDataGas)
if context.UseGas(dataGas) {
ref.SetCode(ret)
}
addr = ref.Address()
stack.push(addr.Big())
}
case CALL, CALLCODE:
gas := stack.pop()
// pop gas and value of the stack.
addr, value := stack.pop(), stack.pop()
value = U256(value)
// pop input size and offset
inOffset, inSize := stack.pop(), stack.pop()
// pop return size and offset
retOffset, retSize := stack.pop(), stack.pop()
address := common.BigToAddress(addr)
// Get the arguments from the memory
args := mem.Get(inOffset.Int64(), inSize.Int64())
if len(value.Bytes()) > 0 {
gas.Add(gas, params.CallStipend)
}
var (
ret []byte
err error
)
if op == CALLCODE {
ret, err = self.env.CallCode(context, address, args, gas, price, value)
} else {
ret, err = self.env.Call(context, address, args, gas, price, value)
}
if err != nil {
stack.push(common.BigFalse)
} else {
stack.push(common.BigTrue)
mem.Set(retOffset.Uint64(), retSize.Uint64(), ret)
}
case RETURN:
offset, size := stack.pop(), stack.pop()
ret := mem.GetPtr(offset.Int64(), size.Int64())
return context.Return(ret), nil
case SUICIDE:
receiver := statedb.GetOrNewStateObject(common.BigToAddress(stack.pop()))
balance := statedb.GetBalance(context.Address())
receiver.AddBalance(balance)
statedb.Delete(context.Address())
fallthrough
case STOP: // Stop the context
return context.Return(nil), nil
default:
} else {
return nil, fmt.Errorf("Invalid opcode %x", op)
}
@ -681,7 +225,7 @@ func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
// calculateGasAndSize calculates the required given the opcode and stack items calculates the new memorysize for
// the operation. This does not reduce gas or resizes the memory.
func calculateGasAndSize(env Environment, context *Context, caller ContextRef, op OpCode, statedb *state.StateDB, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
func calculateGasAndSize(env Environment, contract *Contract, caller ContractRef, op OpCode, statedb Database, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
var (
gas = new(big.Int)
newMemSize *big.Int = new(big.Int)
@ -731,7 +275,7 @@ func calculateGasAndSize(env Environment, context *Context, caller ContextRef, o
var g *big.Int
y, x := stack.data[stack.len()-2], stack.data[stack.len()-1]
val := statedb.GetState(context.Address(), common.BigToHash(x))
val := statedb.GetState(contract.Address(), common.BigToHash(x))
// This checks for 3 scenario's and calculates gas accordingly
// 1. From a zero-value address to a non-zero value (NEW VALUE)
@ -741,7 +285,7 @@ func calculateGasAndSize(env Environment, context *Context, caller ContextRef, o
// 0 => non 0
g = params.SstoreSetGas
} else if !common.EmptyHash(val) && common.EmptyHash(common.BigToHash(y)) {
statedb.Refund(params.SstoreRefundGas)
statedb.AddRefund(params.SstoreRefundGas)
g = params.SstoreClearGas
} else {
@ -750,8 +294,8 @@ func calculateGasAndSize(env Environment, context *Context, caller ContextRef, o
}
gas.Set(g)
case SUICIDE:
if !statedb.IsDeleted(context.Address()) {
statedb.Refund(params.SuicideRefundGas)
if !statedb.IsDeleted(contract.Address()) {
statedb.AddRefund(params.SuicideRefundGas)
}
case MLOAD:
newMemSize = calcMemSize(stack.peek(), u256(32))
@ -788,7 +332,8 @@ func calculateGasAndSize(env Environment, context *Context, caller ContextRef, o
gas.Add(gas, stack.data[stack.len()-1])
if op == CALL {
if env.State().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
//if env.Db().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
if !env.Db().Exist(common.BigToAddress(stack.data[stack.len()-2])) {
gas.Add(gas, params.CallNewAccountGas)
}
}
@ -802,38 +347,18 @@ func calculateGasAndSize(env Environment, context *Context, caller ContextRef, o
newMemSize = common.BigMax(x, y)
}
if newMemSize.Cmp(common.Big0) > 0 {
newMemSizeWords := toWordSize(newMemSize)
newMemSize.Mul(newMemSizeWords, u256(32))
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
oldSize := toWordSize(big.NewInt(int64(mem.Len())))
pow := new(big.Int).Exp(oldSize, common.Big2, Zero)
linCoef := new(big.Int).Mul(oldSize, params.MemoryGas)
quadCoef := new(big.Int).Div(pow, params.QuadCoeffDiv)
oldTotalFee := new(big.Int).Add(linCoef, quadCoef)
pow.Exp(newMemSizeWords, common.Big2, Zero)
linCoef = new(big.Int).Mul(newMemSizeWords, params.MemoryGas)
quadCoef = new(big.Int).Div(pow, params.QuadCoeffDiv)
newTotalFee := new(big.Int).Add(linCoef, quadCoef)
fee := new(big.Int).Sub(newTotalFee, oldTotalFee)
gas.Add(gas, fee)
}
}
quadMemGas(mem, newMemSize, gas)
return newMemSize, gas, nil
}
// RunPrecompile runs and evaluate the output of a precompiled contract defined in contracts.go
func (self *Vm) RunPrecompiled(p *PrecompiledAccount, input []byte, context *Context) (ret []byte, err error) {
func (self *Vm) RunPrecompiled(p *PrecompiledAccount, input []byte, contract *Contract) (ret []byte, err error) {
gas := p.Gas(len(input))
if context.UseGas(gas) {
if contract.UseGas(gas) {
ret = p.Call(input)
return context.Return(ret), nil
return contract.Return(ret), nil
} else {
return nil, OutOfGasError
}
@ -841,18 +366,20 @@ func (self *Vm) RunPrecompiled(p *PrecompiledAccount, input []byte, context *Con
// log emits a log event to the environment for each opcode encountered. This is not to be confused with the
// LOG* opcode.
func (self *Vm) log(pc uint64, op OpCode, gas, cost *big.Int, memory *Memory, stack *stack, context *Context, err error) {
func (self *Vm) log(pc uint64, op OpCode, gas, cost *big.Int, memory *Memory, stack *stack, contract *Contract, err error) {
if Debug {
mem := make([]byte, len(memory.Data()))
copy(mem, memory.Data())
stck := make([]*big.Int, len(stack.Data()))
copy(stck, stack.Data())
object := context.self.(*state.StateObject)
storage := make(map[common.Hash][]byte)
object.EachStorage(func(k, v []byte) {
storage[common.BytesToHash(k)] = v
})
/*
object := contract.self.(*state.StateObject)
object.EachStorage(func(k, v []byte) {
storage[common.BytesToHash(k)] = v
})
*/
self.env.AddStructLog(StructLog{pc, op, new(big.Int).Set(gas), cost, mem, stck, storage, err})
}

3
core/vm/vm_jit.go
View File

@ -30,6 +30,7 @@ void evmjit_destroy(void* _jit);
*/
import "C"
/*
import (
"bytes"
"errors"
@ -385,4 +386,4 @@ func env_extcode(_vm unsafe.Pointer, _addr unsafe.Pointer, o_size *uint64) *byte
code := vm.Env().State().GetCode(addr)
*o_size = uint64(len(code))
return getDataPtr(code)
}
}*/

34
core/vm_env.go
View File

@ -53,7 +53,7 @@ func (self *VMEnv) Time() *big.Int { return self.header.Time }
func (self *VMEnv) Difficulty() *big.Int { return self.header.Difficulty }
func (self *VMEnv) GasLimit() *big.Int { return self.header.GasLimit }
func (self *VMEnv) Value() *big.Int { return self.msg.Value() }
func (self *VMEnv) State() *state.StateDB { return self.state }
func (self *VMEnv) Db() vm.Database { return self.state }
func (self *VMEnv) Depth() int { return self.depth }
func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) VmType() vm.Type { return self.typ }
@ -66,30 +66,34 @@ func (self *VMEnv) GetHash(n uint64) common.Hash {
return common.Hash{}
}
func (self *VMEnv) AddLog(log *state.Log) {
func (self *VMEnv) AddLog(log *vm.Log) {
self.state.AddLog(log)
}
func (self *VMEnv) CanTransfer(from vm.Account, balance *big.Int) bool {
return from.Balance().Cmp(balance) >= 0
func (self *VMEnv) CanTransfer(from common.Address, balance *big.Int) bool {
return self.state.GetBalance(from).Cmp(balance) >= 0
}
func (self *VMEnv) MakeSnapshot() vm.Database {
return self.state.Copy()
}
func (self *VMEnv) SetSnapshot(copy vm.Database) {
self.state.Set(copy.(*state.StateDB))
}
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
return vm.Transfer(from, to, amount)
return Transfer(from, to, amount)
}
func (self *VMEnv) Call(me vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
exe := NewExecution(self, &addr, data, gas, price, value)
return exe.Call(addr, me)
func (self *VMEnv) Call(me vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
return Call(self, me, addr, data, gas, price, value)
}
func (self *VMEnv) CallCode(me vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
maddr := me.Address()
exe := NewExecution(self, &maddr, data, gas, price, value)
return exe.Call(addr, me)
func (self *VMEnv) CallCode(me vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
return CallCode(self, me, addr, data, gas, price, value)
}
func (self *VMEnv) Create(me vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
exe := NewExecution(self, nil, data, gas, price, value)
return exe.Create(me)
func (self *VMEnv) Create(me vm.ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
return Create(self, me, data, gas, price, value)
}
func (self *VMEnv) StructLogs() []vm.StructLog {

16
eth/filters/filter.go
View File

@ -21,8 +21,8 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
)
type AccountChange struct {
@ -39,9 +39,9 @@ type Filter struct {
max int
topics [][]common.Hash
BlockCallback func(*types.Block, state.Logs)
BlockCallback func(*types.Block, vm.Logs)
TransactionCallback func(*types.Transaction)
LogsCallback func(state.Logs)
LogsCallback func(vm.Logs)
}
// Create a new filter which uses a bloom filter on blocks to figure out whether a particular block
@ -78,7 +78,7 @@ func (self *Filter) SetSkip(skip int) {
}
// Run filters logs with the current parameters set
func (self *Filter) Find() state.Logs {
func (self *Filter) Find() vm.Logs {
earliestBlock := core.GetCurrentBlock(self.db)
var earliestBlockNo uint64 = uint64(self.earliest)
if self.earliest == -1 {
@ -90,7 +90,7 @@ func (self *Filter) Find() state.Logs {
}
var (
logs state.Logs
logs vm.Logs
block = core.GetBlockByNumber(self.db, latestBlockNo)
)
@ -112,7 +112,7 @@ done:
// Get the logs of the block
var (
receipts = core.GetBlockReceipts(self.db, block.Hash())
unfiltered state.Logs
unfiltered vm.Logs
)
for _, receipt := range receipts {
unfiltered = append(unfiltered, receipt.Logs()...)
@ -138,8 +138,8 @@ func includes(addresses []common.Address, a common.Address) bool {
return false
}
func (self *Filter) FilterLogs(logs state.Logs) state.Logs {
var ret state.Logs
func (self *Filter) FilterLogs(logs vm.Logs) vm.Logs {
var ret vm.Logs
// Filter the logs for interesting stuff
Logs:

6
eth/filters/filter_system.go
View File

@ -22,7 +22,7 @@ import (
"sync"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/event"
)
@ -89,7 +89,7 @@ func (fs *FilterSystem) filterLoop() {
//core.PendingBlockEvent{},
core.ChainEvent{},
core.TxPreEvent{},
state.Logs(nil))
vm.Logs(nil))
out:
for {
@ -116,7 +116,7 @@ out:
}
fs.filterMu.RUnlock()
case state.Logs:
case vm.Logs:
fs.filterMu.RLock()
for _, filter := range fs.filters {
if filter.LogsCallback != nil {

3
miner/worker.go
View File

@ -29,6 +29,7 @@ import (
"github.com/ethereum/go-ethereum/core"
"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/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/logger"
@ -298,7 +299,7 @@ func (self *worker) wait() {
}
// broadcast before waiting for validation
go func(block *types.Block, logs state.Logs, receipts []*types.Receipt) {
go func(block *types.Block, logs vm.Logs, receipts []*types.Receipt) {
self.mux.Post(core.NewMinedBlockEvent{block})
self.mux.Post(core.ChainEvent{block, block.Hash(), logs})
if stat == core.CanonStatTy {

6
rpc/api/eth_args.go
View File

@ -24,8 +24,8 @@ import (
"strings"
"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/rpc/shared"
)
@ -830,7 +830,7 @@ type LogRes struct {
TransactionIndex *hexnum `json:"transactionIndex"`
}
func NewLogRes(log *state.Log) LogRes {
func NewLogRes(log *vm.Log) LogRes {
var l LogRes
l.Topics = make([]*hexdata, len(log.Topics))
for j, topic := range log.Topics {
@ -847,7 +847,7 @@ func NewLogRes(log *state.Log) LogRes {
return l
}
func NewLogsRes(logs state.Logs) (ls []LogRes) {
func NewLogsRes(logs vm.Logs) (ls []LogRes) {
ls = make([]LogRes, len(logs))
for i, log := range logs {

4
tests/state_test_util.go
View File

@ -168,7 +168,7 @@ func runStateTest(test VmTest) error {
ret []byte
// gas *big.Int
// err error
logs state.Logs
logs vm.Logs
)
ret, logs, _, _ = RunState(statedb, env, test.Transaction)
@ -216,7 +216,7 @@ func runStateTest(test VmTest) error {
return nil
}
func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, vm.Logs, *big.Int, error) {
var (
data = common.FromHex(tx["data"])
gas = common.Big(tx["gasLimit"])

47
tests/util.go
View File

@ -30,7 +30,7 @@ import (
"github.com/ethereum/go-ethereum/ethdb"
)
func checkLogs(tlog []Log, logs state.Logs) error {
func checkLogs(tlog []Log, logs vm.Logs) error {
if len(tlog) != len(logs) {
return fmt.Errorf("log length mismatch. Expected %d, got %d", len(tlog), len(logs))
@ -53,7 +53,7 @@ func checkLogs(tlog []Log, logs state.Logs) error {
}
}
}
genBloom := common.LeftPadBytes(types.LogsBloom(state.Logs{logs[i]}).Bytes(), 256)
genBloom := common.LeftPadBytes(types.LogsBloom(vm.Logs{logs[i]}).Bytes(), 256)
if !bytes.Equal(genBloom, common.Hex2Bytes(log.BloomF)) {
return fmt.Errorf("bloom mismatch")
@ -181,18 +181,18 @@ func (self *Env) BlockNumber() *big.Int { return self.number }
func (self *Env) Coinbase() common.Address { return self.coinbase }
func (self *Env) Time() *big.Int { return self.time }
func (self *Env) Difficulty() *big.Int { return self.difficulty }
func (self *Env) State() *state.StateDB { return self.state }
func (self *Env) Db() vm.Database { return self.state }
func (self *Env) GasLimit() *big.Int { return self.gasLimit }
func (self *Env) VmType() vm.Type { return vm.StdVmTy }
func (self *Env) GetHash(n uint64) common.Hash {
return common.BytesToHash(crypto.Sha3([]byte(big.NewInt(int64(n)).String())))
}
func (self *Env) AddLog(log *state.Log) {
func (self *Env) AddLog(log *vm.Log) {
self.state.AddLog(log)
}
func (self *Env) Depth() int { return self.depth }
func (self *Env) SetDepth(i int) { self.depth = i }
func (self *Env) CanTransfer(from vm.Account, balance *big.Int) bool {
func (self *Env) CanTransfer(from common.Address, balance *big.Int) bool {
if self.skipTransfer {
if self.initial {
self.initial = false
@ -200,58 +200,53 @@ func (self *Env) CanTransfer(from vm.Account, balance *big.Int) bool {
}
}
return from.Balance().Cmp(balance) >= 0
return self.state.GetBalance(from).Cmp(balance) >= 0
}
func (self *Env) MakeSnapshot() vm.Database {
return self.state.Copy()
}
func (self *Env) SetSnapshot(copy vm.Database) {
self.state.Set(copy.(*state.StateDB))
}
func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error {
if self.skipTransfer {
return nil
}
return vm.Transfer(from, to, amount)
return core.Transfer(from, to, amount)
}
func (self *Env) vm(addr *common.Address, data []byte, gas, price, value *big.Int) *core.Execution {
exec := core.NewExecution(self, addr, data, gas, price, value)
return exec
}
func (self *Env) Call(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
func (self *Env) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
if self.vmTest && self.depth > 0 {
caller.ReturnGas(gas, price)
return nil, nil
}
exe := self.vm(&addr, data, gas, price, value)
ret, err := exe.Call(addr, caller)
self.Gas = exe.Gas
ret, err := core.Call(self, caller, addr, data, gas, price, value)
self.Gas = gas
return ret, err
}
func (self *Env) CallCode(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
func (self *Env) CallCode(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
if self.vmTest && self.depth > 0 {
caller.ReturnGas(gas, price)
return nil, nil
}
caddr := caller.Address()
exe := self.vm(&caddr, data, gas, price, value)
return exe.Call(addr, caller)
return core.CallCode(self, caller, addr, data, gas, price, value)
}
func (self *Env) Create(caller vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
exe := self.vm(nil, data, gas, price, value)
func (self *Env) Create(caller vm.ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
if self.vmTest {
caller.ReturnGas(gas, price)
nonce := self.state.GetNonce(caller.Address())
obj := self.state.GetOrNewStateObject(crypto.CreateAddress(caller.Address(), nonce))
return nil, nil, obj
return nil, obj.Address(), nil
} else {
return exe.Create(caller)
return core.Create(self, caller, data, gas, price, value)
}
}

4
tests/vm_test.go
View File

@ -24,14 +24,14 @@ import (
func BenchmarkVmAckermann32Tests(b *testing.B) {
fn := filepath.Join(vmTestDir, "vmPerformanceTest.json")
if err := BenchVmTest(fn, bconf{"ackermann32", true, os.Getenv("JITVM") == "true"}, b); err != nil {
if err := BenchVmTest(fn, bconf{"ackermann32", os.Getenv("JITFORCE") == "true", os.Getenv("JITVM") == "true"}, b); err != nil {
b.Error(err)
}
}
func BenchmarkVmFibonacci16Tests(b *testing.B) {
fn := filepath.Join(vmTestDir, "vmPerformanceTest.json")
if err := BenchVmTest(fn, bconf{"fibonacci16", true, os.Getenv("JITVM") == "true"}, b); err != nil {
if err := BenchVmTest(fn, bconf{"fibonacci16", os.Getenv("JITFORCE") == "true", os.Getenv("JITVM") == "true"}, b); err != nil {
b.Error(err)
}
}

4
tests/vm_test_util.go
View File

@ -185,7 +185,7 @@ func runVmTest(test VmTest) error {
ret []byte
gas *big.Int
err error
logs state.Logs
logs vm.Logs
)
ret, logs, gas, err = RunVm(statedb, env, test.Exec)
@ -234,7 +234,7 @@ func runVmTest(test VmTest) error {
return nil
}
func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Logs, *big.Int, error) {
func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, vm.Logs, *big.Int, error) {
var (
to = common.HexToAddress(exec["address"])
from = common.HexToAddress(exec["caller"])

17
xeth/xeth.go
View File

@ -33,6 +33,7 @@ import (
"github.com/ethereum/go-ethereum/core"
"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/eth"
"github.com/ethereum/go-ethereum/eth/filters"
@ -541,7 +542,7 @@ func (self *XEth) NewLogFilter(earliest, latest int64, skip, max int, address []
filter.SetMax(max)
filter.SetAddress(cAddress(address))
filter.SetTopics(cTopics(topics))
filter.LogsCallback = func(logs state.Logs) {
filter.LogsCallback = func(logs vm.Logs) {
self.logMu.Lock()
defer self.logMu.Unlock()
@ -580,7 +581,7 @@ func (self *XEth) NewBlockFilter() int {
id := self.filterManager.Add(filter)
self.blockQueue[id] = &hashQueue{timeout: time.Now()}
filter.BlockCallback = func(block *types.Block, logs state.Logs) {
filter.BlockCallback = func(block *types.Block, logs vm.Logs) {
self.blockMu.Lock()
defer self.blockMu.Unlock()
@ -603,7 +604,7 @@ func (self *XEth) GetFilterType(id int) byte {
return UnknownFilterTy
}
func (self *XEth) LogFilterChanged(id int) state.Logs {
func (self *XEth) LogFilterChanged(id int) vm.Logs {
self.logMu.Lock()
defer self.logMu.Unlock()
@ -633,7 +634,7 @@ func (self *XEth) TransactionFilterChanged(id int) []common.Hash {
return nil
}
func (self *XEth) Logs(id int) state.Logs {
func (self *XEth) Logs(id int) vm.Logs {
filter := self.filterManager.Get(id)
if filter != nil {
return filter.Find()
@ -642,7 +643,7 @@ func (self *XEth) Logs(id int) state.Logs {
return nil
}
func (self *XEth) AllLogs(earliest, latest int64, skip, max int, address []string, topics [][]string) state.Logs {
func (self *XEth) AllLogs(earliest, latest int64, skip, max int, address []string, topics [][]string) vm.Logs {
filter := filters.New(self.backend.ChainDb())
filter.SetEarliestBlock(earliest)
filter.SetLatestBlock(latest)
@ -1029,19 +1030,19 @@ func (m callmsg) Data() []byte { return m.data }
type logQueue struct {
mu sync.Mutex
logs state.Logs
logs vm.Logs
timeout time.Time
id int
}
func (l *logQueue) add(logs ...*state.Log) {
func (l *logQueue) add(logs ...*vm.Log) {
l.mu.Lock()
defer l.mu.Unlock()
l.logs = append(l.logs, logs...)
}
func (l *logQueue) get() state.Logs {
func (l *logQueue) get() vm.Logs {
l.mu.Lock()
defer l.mu.Unlock()