1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
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/>.
*/
/**
* @authors
* Jeffrey Wilcke <i@jev.io>
*/
package main
import (
"flag"
"fmt"
"log"
"math/big"
"os"
"runtime"
"time"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/state"
"github.com/ethereum/go-ethereum/vm"
)
var (
code = flag.String("code", "", "evm code")
loglevel = flag.Int("log", 4, "log level")
gas = flag.String("gas", "1000000000", "gas amount")
price = flag.String("price", "0", "gas price")
value = flag.String("value", "0", "tx value")
dump = flag.Bool("dump", false, "dump state after run")
data = flag.String("data", "", "data")
)
func perr(v ...interface{}) {
fmt.Println(v...)
//os.Exit(1)
}
func main() {
flag.Parse()
logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.LogLevel(*loglevel)))
db, _ := ethdb.NewMemDatabase()
statedb := state.New(nil, db)
sender := statedb.NewStateObject([]byte("sender"))
receiver := statedb.NewStateObject([]byte("receiver"))
receiver.SetCode(ethutil.Hex2Bytes(*code))
vmenv := NewEnv(statedb, []byte("evmuser"), ethutil.Big(*value))
tstart := time.Now()
ret, e := vmenv.Call(sender, receiver.Address(), ethutil.Hex2Bytes(*data), ethutil.Big(*gas), ethutil.Big(*price), ethutil.Big(*value))
logger.Flush()
if e != nil {
perr(e)
}
if *dump {
fmt.Println(string(statedb.Dump()))
}
var mem runtime.MemStats
runtime.ReadMemStats(&mem)
fmt.Printf("vm took %v\n", time.Since(tstart))
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("%x\n", ret)
}
type VMEnv struct {
state *state.StateDB
block *types.Block
transactor []byte
value *big.Int
depth int
Gas *big.Int
time int64
}
func NewEnv(state *state.StateDB, transactor []byte, value *big.Int) *VMEnv {
return &VMEnv{
state: state,
transactor: transactor,
value: value,
time: time.Now().Unix(),
}
}
func (self *VMEnv) State() *state.StateDB { return self.state }
func (self *VMEnv) Origin() []byte { return self.transactor }
func (self *VMEnv) BlockNumber() *big.Int { return ethutil.Big0 }
func (self *VMEnv) PrevHash() []byte { return make([]byte, 32) }
func (self *VMEnv) Coinbase() []byte { return self.transactor }
func (self *VMEnv) Time() int64 { return self.time }
func (self *VMEnv) Difficulty() *big.Int { return ethutil.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) []byte {
if self.block.Number().Cmp(big.NewInt(int64(n))) == 0 {
return self.block.Hash()
}
return nil
}
func (self *VMEnv) AddLog(log state.Log) {
self.state.AddLog(log)
}
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
return vm.Transfer(from, to, amount)
}
func (self *VMEnv) vm(addr, 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, 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, data []byte, gas, price, value *big.Int) ([]byte, error) {
exe := self.vm(caller.Address(), data, gas, price, value)
return exe.Call(addr, caller)
}
func (self *VMEnv) Create(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
exe := self.vm(addr, data, gas, price, value)
return exe.Create(caller)
}
|
