237 lines
6.5 KiB
Go
237 lines
6.5 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of go-ethereum.
|
|
//
|
|
// go-ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// go-ethereum is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// evm executes EVM code snippets.
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
"os"
|
|
"runtime"
|
|
"time"
|
|
|
|
"github.com/codegangsta/cli"
|
|
"github.com/ethereum/go-ethereum/cmd/utils"
|
|
"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"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/logger/glog"
|
|
)
|
|
|
|
var (
|
|
app *cli.App
|
|
DebugFlag = cli.BoolFlag{
|
|
Name: "debug",
|
|
Usage: "output full trace logs",
|
|
}
|
|
ForceJitFlag = cli.BoolFlag{
|
|
Name: "forcejit",
|
|
Usage: "forces jit compilation",
|
|
}
|
|
DisableJitFlag = cli.BoolFlag{
|
|
Name: "nojit",
|
|
Usage: "disabled jit compilation",
|
|
}
|
|
CodeFlag = cli.StringFlag{
|
|
Name: "code",
|
|
Usage: "EVM code",
|
|
}
|
|
GasFlag = cli.StringFlag{
|
|
Name: "gas",
|
|
Usage: "gas limit for the evm",
|
|
Value: "10000000000",
|
|
}
|
|
PriceFlag = cli.StringFlag{
|
|
Name: "price",
|
|
Usage: "price set for the evm",
|
|
Value: "0",
|
|
}
|
|
ValueFlag = cli.StringFlag{
|
|
Name: "value",
|
|
Usage: "value set for the evm",
|
|
Value: "0",
|
|
}
|
|
DumpFlag = cli.BoolFlag{
|
|
Name: "dump",
|
|
Usage: "dumps the state after the run",
|
|
}
|
|
InputFlag = cli.StringFlag{
|
|
Name: "input",
|
|
Usage: "input for the EVM",
|
|
}
|
|
SysStatFlag = cli.BoolFlag{
|
|
Name: "sysstat",
|
|
Usage: "display system stats",
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
app = utils.NewApp("0.2", "the evm command line interface")
|
|
app.Flags = []cli.Flag{
|
|
DebugFlag,
|
|
ForceJitFlag,
|
|
DisableJitFlag,
|
|
SysStatFlag,
|
|
CodeFlag,
|
|
GasFlag,
|
|
PriceFlag,
|
|
ValueFlag,
|
|
DumpFlag,
|
|
InputFlag,
|
|
}
|
|
app.Action = run
|
|
}
|
|
|
|
func run(ctx *cli.Context) {
|
|
vm.Debug = ctx.GlobalBool(DebugFlag.Name)
|
|
vm.ForceJit = ctx.GlobalBool(ForceJitFlag.Name)
|
|
vm.EnableJit = !ctx.GlobalBool(DisableJitFlag.Name)
|
|
|
|
glog.SetToStderr(true)
|
|
|
|
db, _ := ethdb.NewMemDatabase()
|
|
statedb := state.New(common.Hash{}, db)
|
|
sender := statedb.CreateAccount(common.StringToAddress("sender"))
|
|
receiver := statedb.CreateAccount(common.StringToAddress("receiver"))
|
|
receiver.SetCode(common.Hex2Bytes(ctx.GlobalString(CodeFlag.Name)))
|
|
|
|
vmenv := NewEnv(statedb, common.StringToAddress("evmuser"), common.Big(ctx.GlobalString(ValueFlag.Name)))
|
|
|
|
tstart := time.Now()
|
|
ret, e := vmenv.Call(
|
|
sender,
|
|
receiver.Address(),
|
|
common.Hex2Bytes(ctx.GlobalString(InputFlag.Name)),
|
|
common.Big(ctx.GlobalString(GasFlag.Name)),
|
|
common.Big(ctx.GlobalString(PriceFlag.Name)),
|
|
common.Big(ctx.GlobalString(ValueFlag.Name)),
|
|
)
|
|
vmdone := time.Since(tstart)
|
|
|
|
if ctx.GlobalBool(DumpFlag.Name) {
|
|
fmt.Println(string(statedb.Dump()))
|
|
}
|
|
vm.StdErrFormat(vmenv.StructLogs())
|
|
|
|
if ctx.GlobalBool(SysStatFlag.Name) {
|
|
var mem runtime.MemStats
|
|
runtime.ReadMemStats(&mem)
|
|
fmt.Printf("vm took %v\n", vmdone)
|
|
fmt.Printf(`alloc: %d
|
|
tot alloc: %d
|
|
no. malloc: %d
|
|
heap alloc: %d
|
|
heap objs: %d
|
|
num gc: %d
|
|
`, mem.Alloc, mem.TotalAlloc, mem.Mallocs, mem.HeapAlloc, mem.HeapObjects, mem.NumGC)
|
|
}
|
|
|
|
fmt.Printf("OUT: 0x%x", ret)
|
|
if e != nil {
|
|
fmt.Printf(" error: %v", e)
|
|
}
|
|
fmt.Println()
|
|
}
|
|
|
|
func main() {
|
|
if err := app.Run(os.Args); err != nil {
|
|
fmt.Fprintln(os.Stderr, err)
|
|
os.Exit(1)
|
|
}
|
|
}
|
|
|
|
type VMEnv struct {
|
|
state *state.StateDB
|
|
block *types.Block
|
|
|
|
transactor *common.Address
|
|
value *big.Int
|
|
|
|
depth int
|
|
Gas *big.Int
|
|
time *big.Int
|
|
logs []vm.StructLog
|
|
}
|
|
|
|
func NewEnv(state *state.StateDB, transactor common.Address, value *big.Int) *VMEnv {
|
|
return &VMEnv{
|
|
state: state,
|
|
transactor: &transactor,
|
|
value: value,
|
|
time: big.NewInt(time.Now().Unix()),
|
|
}
|
|
}
|
|
|
|
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) GetHash(n uint64) common.Hash {
|
|
if self.block.Number().Cmp(big.NewInt(int64(n))) == 0 {
|
|
return self.block.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)
|
|
}
|
|
func (self *VMEnv) CanTransfer(from vm.Account, balance *big.Int) bool {
|
|
return from.Balance().Cmp(balance) >= 0
|
|
}
|
|
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
|
|
return vm.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.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)
|
|
}
|