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Merge pull request #1228 from obscuren/vm-optimisations

Browse Source 
core/vm: optimisations
This commit is contained in:
Jeffrey Wilcke 2015-06-11 03:32:39 -07:00
commit 6609d45ef4
16 changed files with 199 additions and 158 deletions
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10
cmd/evm/main.go
View File

@ -59,6 +59,7 @@ func main() {
logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.LogLevel(*loglevel)))
vm.Debug = true
db, _ := ethdb.NewMemDatabase()
statedb := state.New(common.Hash{}, db)
sender := statedb.CreateAccount(common.StringToAddress("sender"))
@ -80,6 +81,8 @@ func main() {
fmt.Println(string(statedb.Dump()))
}
vm.StdErrFormat(vmenv.StructLogs())
var mem runtime.MemStats
runtime.ReadMemStats(&mem)
fmt.Printf("vm took %v\n", time.Since(tstart))
@ -104,6 +107,7 @@ type VMEnv struct {
depth int
Gas *big.Int
time int64
logs []vm.StructLog
}
func NewEnv(state *state.StateDB, transactor common.Address, value *big.Int) *VMEnv {
@ -133,6 +137,12 @@ func (self *VMEnv) GetHash(n uint64) common.Hash {
}
return common.Hash{}
}
func (self *VMEnv) AddStructLog(log vm.StructLog) {
self.logs = append(self.logs, log)
}
func (self *VMEnv) StructLogs() []vm.StructLog {
return self.logs
}
func (self *VMEnv) AddLog(log *state.Log) {
self.state.AddLog(log)
}

7
cmd/geth/admin.go
View File

@ -271,9 +271,12 @@ func (js *jsre) debugBlock(call otto.FunctionCall) otto.Value {
}
tstart := time.Now()
old := vm.Debug
vm.Debug = true
if len(call.ArgumentList) > 1 {
vm.Debug, _ = call.Argument(1).ToBoolean()
}
_, err = js.ethereum.BlockProcessor().RetryProcess(block)
if err != nil {
fmt.Println(err)

10
core/block_processor.go
View File

@ -151,11 +151,17 @@ func (sm *BlockProcessor) RetryProcess(block *types.Block) (logs state.Logs, err
return nil, ParentError(header.ParentHash)
}
parent := sm.bc.GetBlock(header.ParentHash)
if !sm.Pow.Verify(block) {
// FIXME Change to full header validation. See #1225
errch := make(chan bool)
go func() { errch <- sm.Pow.Verify(block) }()
logs, err = sm.processWithParent(block, parent)
if !<-errch {
return nil, ValidationError("Block's nonce is invalid (= %x)", block.Nonce)
}
return sm.processWithParent(block, parent)
return logs, err
}
// Process block will attempt to process the given block's transactions and applies them

5
core/chain_manager.go
View File

@ -567,6 +567,7 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
go verifyNonces(self.pow, chain, nonceQuit, nonceDone)
defer close(nonceQuit)
txcount := 0
for i, block := range chain {
bstart := time.Now()
// Wait for block i's nonce to be verified before processing
@ -625,6 +626,8 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
return i, err
}
txcount += len(block.Transactions())
cblock := self.currentBlock
// Compare the TD of the last known block in the canonical chain to make sure it's greater.
// At this point it's possible that a different chain (fork) becomes the new canonical chain.
@ -683,7 +686,7 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
if (stats.queued > 0 || stats.processed > 0 || stats.ignored > 0) && bool(glog.V(logger.Info)) {
tend := time.Since(tstart)
start, end := chain[0], chain[len(chain)-1]
glog.Infof("imported %d block(s) (%d queued %d ignored) in %v. #%v [%x / %x]\n", stats.processed, stats.queued, stats.ignored, tend, end.Number(), start.Hash().Bytes()[:4], end.Hash().Bytes()[:4])
glog.Infof("imported %d block(s) (%d queued %d ignored) including %d txs in %v. #%v [%x / %x]\n", stats.processed, stats.queued, stats.ignored, txcount, tend, end.Number(), start.Hash().Bytes()[:4], end.Hash().Bytes()[:4])
}
go self.eventMux.Post(queueEvent)

4
core/execution.go
View File

@ -2,7 +2,6 @@ package core
import (
"math/big"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
@ -49,8 +48,6 @@ func (self *Execution) Create(caller vm.ContextRef) (ret []byte, err error, acco
}
func (self *Execution) exec(contextAddr *common.Address, code []byte, caller vm.ContextRef) (ret []byte, err error) {
start := time.Now()
env := self.env
evm := self.evm
if env.Depth() > int(params.CallCreateDepth.Int64()) {
@ -96,7 +93,6 @@ func (self *Execution) exec(contextAddr *common.Address, code []byte, caller vm.
context.SetCallCode(contextAddr, code)
ret, err = evm.Run(context, self.input)
evm.Printf("message call took %v", time.Since(start)).Endl()
if err != nil {
env.State().Set(snapshot)
}

16
core/state/state_object.go
View File

@ -336,6 +336,22 @@ func (self *StateObject) Nonce() uint64 {
return self.nonce
}
func (self *StateObject) EachStorage(cb func(key, value []byte)) {
// When iterating over the storage check the cache first
for h, v := range self.storage {
cb([]byte(h), v.Bytes())
}
it := self.State.trie.Iterator()
for it.Next() {
// ignore cached values
key := self.State.trie.GetKey(it.Key)
if _, ok := self.storage[string(key)]; !ok {
cb(key, it.Value)
}
}
}
//
// Encoding
//

4
core/state_transition.go
View File

@ -223,6 +223,10 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
return nil, nil, InvalidTxError(err)
}
if vm.Debug {
vm.StdErrFormat(vmenv.StructLogs())
}
self.refundGas()
self.state.AddBalance(self.coinbase, new(big.Int).Mul(self.gasUsed(), self.gasPrice))

8
core/vm/context.go
View File

@ -49,13 +49,13 @@ func NewContext(caller ContextRef, object ContextRef, value, gas, price *big.Int
return c
}
func (c *Context) GetOp(n *big.Int) OpCode {
func (c *Context) GetOp(n uint64) OpCode {
return OpCode(c.GetByte(n))
}
func (c *Context) GetByte(n *big.Int) byte {
if n.Cmp(big.NewInt(int64(len(c.Code)))) < 0 {
return c.Code[n.Int64()]
func (c *Context) GetByte(n uint64) byte {
if n < uint64(len(c.Code)) {
return c.Code[n]
}
return 0

16
core/vm/environment.go
View File

@ -8,6 +8,8 @@ import (
"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
@ -20,6 +22,8 @@ type Environment interface {
GasLimit() *big.Int
Transfer(from, to Account, amount *big.Int) error
AddLog(*state.Log)
AddStructLog(StructLog)
StructLogs() []StructLog
VmType() Type
@ -31,6 +35,18 @@ type Environment interface {
Create(me ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef)
}
// StructLog is emited to the Environment each cycle and lists information about the curent internal state
// prior to the execution of the statement.
type StructLog struct {
Pc uint64
Op OpCode
Gas *big.Int
GasCost *big.Int
Memory []byte
Stack []*big.Int
Storage map[common.Hash][]byte
}
type Account interface {
SubBalance(amount *big.Int)
AddBalance(amount *big.Int)

46
core/vm/logger.go Normal file
View File

@ -0,0 +1,46 @@
package vm
import (
"fmt"
"os"
"unicode/utf8"
"github.com/ethereum/go-ethereum/common"
)
func StdErrFormat(logs []StructLog) {
fmt.Fprintf(os.Stderr, "VM Stats %d ops\n", len(logs))
for _, log := range logs {
fmt.Fprintf(os.Stderr, "PC %08d: %s GAS: %v COST: %v\n", log.Pc, log.Op, log.Gas, log.GasCost)
fmt.Fprintln(os.Stderr, "STACK =", len(log.Stack))
for i := len(log.Stack) - 1; i >= 0; i-- {
fmt.Fprintf(os.Stderr, "%04d: %x\n", len(log.Stack)-i-1, common.LeftPadBytes(log.Stack[i].Bytes(), 32))
}
const maxMem = 10
addr := 0
fmt.Fprintln(os.Stderr, "MEM =", len(log.Memory))
for i := 0; i+16 <= len(log.Memory) && addr < maxMem; i += 16 {
data := log.Memory[i : i+16]
str := fmt.Sprintf("%04d: % x ", addr*16, data)
for _, r := range data {
if r == 0 {
str += "."
} else if utf8.ValidRune(rune(r)) {
str += fmt.Sprintf("%s", string(r))
} else {
str += "?"
}
}
addr++
fmt.Fprintln(os.Stderr, str)
}
fmt.Fprintln(os.Stderr, "STORAGE =", len(log.Storage))
for h, item := range log.Storage {
fmt.Fprintf(os.Stderr, "%x: %x\n", h, common.LeftPadBytes(item, 32))
}
fmt.Fprintln(os.Stderr)
}
}

6
core/vm/stack.go
View File

@ -5,7 +5,7 @@ import (
"math/big"
)
func newStack() *stack {
func newstack() *stack {
return &stack{}
}
@ -14,6 +14,10 @@ type stack struct {
ptr int
}
func (st *stack) Data() []*big.Int {
return st.data[:st.ptr]
}
func (st *stack) push(d *big.Int) {
// NOTE push limit (1024) is checked in baseCheck
stackItem := new(big.Int).Set(d)

2
core/vm/virtual_machine.go
View File

@ -3,6 +3,4 @@ package vm
type VirtualMachine interface {
Env() Environment
Run(context *Context, data []byte) ([]byte, error)
Printf(string, ...interface{}) VirtualMachine
Endl() VirtualMachine
}

200
core/vm/vm.go
View File

@ -7,16 +7,13 @@ import (
"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/glog"
"github.com/ethereum/go-ethereum/params"
)
// Vm implements VirtualMachine
type Vm struct {
env Environment
logTy byte
logStr string
err error
// For logging
debug bool
@ -31,13 +28,13 @@ type Vm struct {
After func(*Context, error)
}
// New returns a new Virtual Machine
func New(env Environment) *Vm {
lt := LogTyPretty
return &Vm{debug: Debug, env: env, logTy: lt, Recoverable: true}
return &Vm{env: env, debug: Debug, Recoverable: true}
}
func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
// 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) {
self.env.SetDepth(self.env.Depth() + 1)
defer self.env.SetDepth(self.env.Depth() - 1)
@ -48,8 +45,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
price = context.Price
)
self.Printf("(%d) (%x) %x (code=%d) gas: %v (d) %x", self.env.Depth(), caller.Address().Bytes()[:4], context.Address(), len(code), context.Gas, callData).Endl()
// 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 self.After != nil {
@ -57,7 +52,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
if err != nil {
self.Printf(" %v", err).Endl()
// In case of a VM exception (known exceptions) all gas consumed (panics NOT included).
context.UseGas(context.Gas)
@ -67,7 +62,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
if context.CodeAddr != nil {
if p := Precompiled[context.CodeAddr.Str()]; p != nil {
return self.RunPrecompiled(p, callData, context)
return self.RunPrecompiled(p, input, context)
}
}
@ -77,23 +72,24 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
var (
op OpCode
codehash = crypto.Sha3Hash(code)
mem = NewMemory()
stack = newStack()
pc = new(big.Int)
statedb = self.env.State()
op OpCode // current opcode
codehash = crypto.Sha3Hash(code) // codehash is used when doing jump dest caching
mem = NewMemory() // bound memory
stack = newstack() // local stack
statedb = self.env.State() // 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
jump = func(from *big.Int, to *big.Int) 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)
nop := context.GetOp(to.Uint64())
return fmt.Errorf("invalid jump destination (%v) %v", nop, to)
}
self.Printf(" ~> %v", to)
pc = to
self.Endl()
pc = to.Uint64()
return nil
}
@ -106,63 +102,56 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
// Get the memory location of pc
op = context.GetOp(pc)
self.Printf("(pc) %-3d -o- %-14s (m) %-4d (s) %-4d ", pc, op.String(), mem.Len(), stack.len())
// calculate the new memory size and gas price for the current executing opcode
newMemSize, gas, err := self.calculateGasAndSize(context, caller, op, statedb, mem, stack)
if err != nil {
return nil, err
}
self.Printf("(g) %-3v (%v)", gas, context.Gas)
self.log(pc, op, context.Gas, gas, mem, stack, context)
// Use the calculated gas. When insufficient gas is present, use all gas and return an
// Out Of Gas error
if !context.UseGas(gas) {
self.Endl()
tmp := new(big.Int).Set(context.Gas)
context.UseGas(context.Gas)
return context.Return(nil), OOG(gas, tmp)
}
// Resize the memory calculated previously
mem.Resize(newMemSize.Uint64())
switch op {
case ADD:
x, y := stack.pop(), stack.pop()
self.Printf(" %v + %v", y, x)
base.Add(x, y)
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case SUB:
x, y := stack.pop(), stack.pop()
self.Printf(" %v - %v", x, y)
base.Sub(x, y)
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case MUL:
x, y := stack.pop(), stack.pop()
self.Printf(" %v * %v", y, x)
base.Mul(x, y)
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case DIV:
x, y := stack.pop(), stack.pop()
self.Printf(" %v / %v", x, y)
if y.Cmp(common.Big0) != 0 {
base.Div(x, y)
@ -170,14 +159,11 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case SDIV:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v / %v", x, y)
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
@ -193,13 +179,10 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
}
self.Printf(" = %v", base)
stack.push(base)
case MOD:
x, y := stack.pop(), stack.pop()
self.Printf(" %v %% %v", x, y)
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
@ -208,13 +191,10 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
self.Printf(" = %v", base)
stack.push(base)
case SMOD:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v %% %v", x, y)
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
@ -230,20 +210,15 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
}
self.Printf(" = %v", base)
stack.push(base)
case EXP:
x, y := stack.pop(), stack.pop()
self.Printf(" %v ** %v", x, y)
base.Exp(x, y, Pow256)
U256(base)
self.Printf(" = %v", base)
stack.push(base)
case SIGNEXTEND:
back := stack.pop()
@ -260,15 +235,13 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
num = U256(num)
self.Printf(" = %v", num)
stack.push(num)
}
case NOT:
stack.push(U256(new(big.Int).Not(stack.pop())))
case LT:
x, y := stack.pop(), stack.pop()
self.Printf(" %v < %v", x, y)
// x < y
if x.Cmp(y) < 0 {
stack.push(common.BigTrue)
@ -277,7 +250,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
case GT:
x, y := stack.pop(), stack.pop()
self.Printf(" %v > %v", x, y)
// x > y
if x.Cmp(y) > 0 {
@ -288,7 +260,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case SLT:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v < %v", x, y)
// x < y
if x.Cmp(S256(y)) < 0 {
stack.push(common.BigTrue)
@ -297,7 +269,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
case SGT:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v > %v", x, y)
// x > y
if x.Cmp(y) > 0 {
@ -308,7 +279,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case EQ:
x, y := stack.pop(), stack.pop()
self.Printf(" %v == %v", y, x)
// x == y
if x.Cmp(y) == 0 {
@ -326,17 +296,14 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case AND:
x, y := stack.pop(), stack.pop()
self.Printf(" %v & %v", y, x)
stack.push(base.And(x, y))
case OR:
x, y := stack.pop(), stack.pop()
self.Printf(" %v | %v", x, y)
stack.push(base.Or(x, y))
case XOR:
x, y := stack.pop(), stack.pop()
self.Printf(" %v ^ %v", x, y)
stack.push(base.Xor(x, y))
case BYTE:
@ -350,8 +317,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
base.Set(common.BigFalse)
}
self.Printf(" => 0x%x", base.Bytes())
stack.push(base)
case ADDMOD:
x := stack.pop()
@ -365,8 +330,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
base = U256(base)
}
self.Printf(" %v + %v %% %v = %v", x, y, z, base)
stack.push(base)
case MULMOD:
x := stack.pop()
@ -380,8 +343,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
}
self.Printf(" %v + %v %% %v = %v", x, y, z, base)
stack.push(base)
case SHA3:
@ -390,55 +351,45 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
stack.push(common.BigD(data))
self.Printf(" => (%v) %x", size, data)
case ADDRESS:
stack.push(common.Bytes2Big(context.Address().Bytes()))
self.Printf(" => %x", context.Address())
case BALANCE:
addr := common.BigToAddress(stack.pop())
balance := statedb.GetBalance(addr)
stack.push(balance)
self.Printf(" => %v (%x)", balance, addr)
case ORIGIN:
origin := self.env.Origin()
stack.push(origin.Big())
self.Printf(" => %x", origin)
case CALLER:
caller := context.caller.Address()
stack.push(common.Bytes2Big(caller.Bytes()))
self.Printf(" => %x", caller)
case CALLVALUE:
stack.push(value)
self.Printf(" => %v", value)
case CALLDATALOAD:
data := getData(callData, stack.pop(), common.Big32)
self.Printf(" => 0x%x", data)
data := getData(input, stack.pop(), common.Big32)
stack.push(common.Bytes2Big(data))
case CALLDATASIZE:
l := int64(len(callData))
l := int64(len(input))
stack.push(big.NewInt(l))
self.Printf(" => %d", l)
case CALLDATACOPY:
var (
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
data := getData(callData, cOff, l)
data := getData(input, cOff, l)
mem.Set(mOff.Uint64(), l.Uint64(), data)
self.Printf(" => [%v, %v, %v]", mOff, cOff, l)
case CODESIZE, EXTCODESIZE:
var code []byte
if op == EXTCODESIZE {
@ -452,7 +403,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
l := big.NewInt(int64(len(code)))
stack.push(l)
self.Printf(" => %d", l)
case CODECOPY, EXTCODECOPY:
var code []byte
if op == EXTCODECOPY {
@ -472,12 +422,9 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
mem.Set(mOff.Uint64(), l.Uint64(), codeCopy)
self.Printf(" => [%v, %v, %v] %x", mOff, cOff, l, codeCopy)
case GASPRICE:
stack.push(context.Price)
self.Printf(" => %x", context.Price)
case BLOCKHASH:
num := stack.pop()
@ -488,56 +435,47 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
stack.push(common.Big0)
}
self.Printf(" => 0x%x", stack.peek().Bytes())
case COINBASE:
coinbase := self.env.Coinbase()
stack.push(coinbase.Big())
self.Printf(" => 0x%x", coinbase)
case TIMESTAMP:
time := self.env.Time()
stack.push(big.NewInt(time))
self.Printf(" => 0x%x", time)
case NUMBER:
number := self.env.BlockNumber()
stack.push(U256(number))
self.Printf(" => 0x%x", number.Bytes())
case DIFFICULTY:
difficulty := self.env.Difficulty()
stack.push(difficulty)
self.Printf(" => 0x%x", difficulty.Bytes())
case GASLIMIT:
self.Printf(" => %v", self.env.GasLimit())
stack.push(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:
a := big.NewInt(int64(op - PUSH1 + 1))
byts := getData(code, new(big.Int).Add(pc, big.NewInt(1)), a)
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.Add(pc, a)
pc += size
self.Printf(" => 0x%x", byts)
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)
self.Printf(" => [%d] 0x%x", n, stack.peek().Bytes())
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)
self.Printf(" => [%d]", n)
case LOG0, LOG1, LOG2, LOG3, LOG4:
n := int(op - LOG0)
topics := make([]common.Hash, n)
@ -550,38 +488,32 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
log := state.NewLog(context.Address(), topics, data, self.env.BlockNumber().Uint64())
self.env.AddLog(log)
self.Printf(" => %v", log)
case MLOAD:
offset := stack.pop()
val := common.BigD(mem.Get(offset.Int64(), 32))
stack.push(val)
self.Printf(" => 0x%x", val.Bytes())
case MSTORE:
// pop value of the stack
mStart, val := stack.pop(), stack.pop()
mem.Set(mStart.Uint64(), 32, common.BigToBytes(val, 256))
self.Printf(" => 0x%x", val)
case MSTORE8:
off, val := stack.pop().Int64(), stack.pop().Int64()
mem.store[off] = byte(val & 0xff)
self.Printf(" => [%v] 0x%x", off, mem.store[off])
case SLOAD:
loc := common.BigToHash(stack.pop())
val := common.Bytes2Big(statedb.GetState(context.Address(), loc))
stack.push(val)
self.Printf(" {0x%x : 0x%x}", loc, val.Bytes())
case SSTORE:
loc := common.BigToHash(stack.pop())
val := stack.pop()
statedb.SetState(context.Address(), loc, val)
self.Printf(" {0x%x : 0x%x}", loc, val.Bytes())
case JUMP:
if err := jump(pc, stack.pop()); err != nil {
return nil, err
@ -599,17 +531,14 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
continue
}
self.Printf(" ~> false")
case JUMPDEST:
case PC:
stack.push(pc)
stack.push(new(big.Int).SetUint64(pc))
case MSIZE:
stack.push(big.NewInt(int64(mem.Len())))
case GAS:
stack.push(context.Gas)
self.Printf(" => %x", context.Gas)
case CREATE:
var (
@ -619,14 +548,12 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
gas = new(big.Int).Set(context.Gas)
addr common.Address
)
self.Endl()
context.UseGas(context.Gas)
ret, suberr, ref := self.env.Create(context, input, gas, price, value)
if suberr != nil {
stack.push(common.BigFalse)
self.Printf(" (*) 0x0 %v", suberr)
} else {
// gas < len(ret) * CreateDataGas == NO_CODE
dataGas := big.NewInt(int64(len(ret)))
@ -651,7 +578,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
retOffset, retSize := stack.pop(), stack.pop()
address := common.BigToAddress(addr)
self.Printf(" => %x", address).Endl()
// Get the arguments from the memory
args := mem.Get(inOffset.Int64(), inSize.Int64())
@ -673,47 +599,41 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
if err != nil {
stack.push(common.BigFalse)
self.Printf("%v").Endl()
} else {
stack.push(common.BigTrue)
mem.Set(retOffset.Uint64(), retSize.Uint64(), ret)
}
self.Printf("resume %x (%v)", context.Address(), context.Gas)
case RETURN:
offset, size := stack.pop(), stack.pop()
ret := mem.GetPtr(offset.Int64(), size.Int64())
self.Printf(" => [%v, %v] (%d) 0x%x", offset, size, len(ret), ret).Endl()
return context.Return(ret), nil
case SUICIDE:
receiver := statedb.GetOrNewStateObject(common.BigToAddress(stack.pop()))
balance := statedb.GetBalance(context.Address())
self.Printf(" => (%x) %v", receiver.Address().Bytes()[:4], balance)
receiver.AddBalance(balance)
statedb.Delete(context.Address())
fallthrough
case STOP: // Stop the context
self.Endl()
return context.Return(nil), nil
default:
self.Printf("(pc) %-3v Invalid opcode %x\n", pc, op).Endl()
return nil, fmt.Errorf("Invalid opcode %x", op)
}
pc.Add(pc, One)
pc++
self.Endl()
}
}
// 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 (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCode, statedb *state.StateDB, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
var (
gas = new(big.Int)
@ -855,40 +775,40 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
return newMemSize, gas, nil
}
func (self *Vm) RunPrecompiled(p *PrecompiledAccount, callData []byte, context *Context) (ret []byte, err error) {
gas := p.Gas(len(callData))
// 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) {
gas := p.Gas(len(input))
if context.UseGas(gas) {
ret = p.Call(callData)
self.Printf("NATIVE_FUNC => %x", ret)
self.Endl()
ret = p.Call(input)
return context.Return(ret), nil
} else {
self.Printf("NATIVE_FUNC => failed").Endl()
tmp := new(big.Int).Set(context.Gas)
return nil, OOG(gas, tmp)
}
}
func (self *Vm) Printf(format string, v ...interface{}) VirtualMachine {
if self.debug {
self.logStr += fmt.Sprintf(format, v...)
}
return self
}
func (self *Vm) Endl() VirtualMachine {
if self.debug {
glog.V(0).Infoln(self.logStr)
self.logStr = ""
}
return self
// 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) {
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
})
self.env.AddStructLog(StructLog{pc, op, new(big.Int).Set(gas), cost, mem, stck, storage})
}
}
// Environment returns the current workable state of the VM
func (self *Vm) Env() Environment {
return self.env
}

11
core/vm_env.go
View File

@ -16,6 +16,8 @@ type VMEnv struct {
depth int
chain *ChainManager
typ vm.Type
// structured logging
logs []vm.StructLog
}
func NewEnv(state *state.StateDB, chain *ChainManager, msg Message, block *types.Block) *VMEnv {
@ -47,6 +49,7 @@ func (self *VMEnv) GetHash(n uint64) common.Hash {
return common.Hash{}
}
func (self *VMEnv) AddLog(log *state.Log) {
self.state.AddLog(log)
}
@ -68,3 +71,11 @@ func (self *VMEnv) Create(me vm.ContextRef, data []byte, gas, price, value *big.
exe := NewExecution(self, nil, data, gas, price, value)
return exe.Create(me)
}
func (self *VMEnv) StructLogs() []vm.StructLog {
return self.logs
}
func (self *VMEnv) AddStructLog(log vm.StructLog) {
self.logs = append(self.logs, log)
}

3
miner/worker.go
View File

@ -270,7 +270,6 @@ func (self *worker) wait() {
func (self *worker) push() {
if atomic.LoadInt32(&self.mining) == 1 {
self.current.block.Header().GasUsed = self.current.totalUsedGas
self.current.block.SetRoot(self.current.state.Root())
// push new work to agents
@ -510,6 +509,8 @@ func (self *worker) commitTransactions(transactions types.Transactions) {
current.tcount++
}
}
self.current.block.Header().GasUsed = self.current.totalUsedGas
}
func (self *worker) commitTransaction(tx *types.Transaction) error {

11
tests/helper/vm.go
View File

@ -27,9 +27,8 @@ type Env struct {
difficulty *big.Int
gasLimit *big.Int
logs state.Logs
vmTest bool
logs []vm.StructLog
}
func NewEnv(state *state.StateDB) *Env {
@ -38,6 +37,14 @@ func NewEnv(state *state.StateDB) *Env {
}
}
func (self *Env) StructLogs() []vm.StructLog {
return self.logs
}
func (self *Env) AddStructLog(log vm.StructLog) {
self.logs = append(self.logs, log)
}
func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
env := NewEnv(state)