208 lines
6.2 KiB
Go
208 lines
6.2 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
package vm
|
|
|
|
import (
|
|
"math/big"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
)
|
|
|
|
const maxRun = 1000
|
|
|
|
func TestSegmenting(t *testing.T) {
|
|
prog := NewProgram([]byte{byte(PUSH1), 0x1, byte(PUSH1), 0x1, 0x0})
|
|
err := CompileProgram(prog)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if instr, ok := prog.instructions[0].(pushSeg); ok {
|
|
if len(instr.data) != 2 {
|
|
t.Error("expected 2 element width pushSegment, got", len(instr.data))
|
|
}
|
|
} else {
|
|
t.Errorf("expected instr[0] to be a pushSeg, got %T", prog.instructions[0])
|
|
}
|
|
|
|
prog = NewProgram([]byte{byte(PUSH1), 0x1, byte(PUSH1), 0x1, byte(JUMP)})
|
|
err = CompileProgram(prog)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, ok := prog.instructions[1].(jumpSeg); ok {
|
|
} else {
|
|
t.Errorf("expected instr[1] to be jumpSeg, got %T", prog.instructions[1])
|
|
}
|
|
|
|
prog = NewProgram([]byte{byte(PUSH1), 0x1, byte(PUSH1), 0x1, byte(PUSH1), 0x1, byte(JUMP)})
|
|
err = CompileProgram(prog)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if instr, ok := prog.instructions[0].(pushSeg); ok {
|
|
if len(instr.data) != 2 {
|
|
t.Error("expected 2 element width pushSegment, got", len(instr.data))
|
|
}
|
|
} else {
|
|
t.Errorf("expected instr[0] to be a pushSeg, got %T", prog.instructions[0])
|
|
}
|
|
if _, ok := prog.instructions[2].(jumpSeg); ok {
|
|
} else {
|
|
t.Errorf("expected instr[1] to be jumpSeg, got %T", prog.instructions[1])
|
|
}
|
|
}
|
|
|
|
func TestCompiling(t *testing.T) {
|
|
prog := NewProgram([]byte{0x60, 0x10})
|
|
err := CompileProgram(prog)
|
|
if err != nil {
|
|
t.Error("didn't expect compile error")
|
|
}
|
|
|
|
if len(prog.instructions) != 1 {
|
|
t.Error("exected 1 compiled instruction, got", len(prog.instructions))
|
|
}
|
|
}
|
|
|
|
func TestResetInput(t *testing.T) {
|
|
var sender account
|
|
|
|
env := NewEnv()
|
|
contract := NewContract(sender, sender, big.NewInt(100), big.NewInt(10000), big.NewInt(0))
|
|
contract.CodeAddr = &common.Address{}
|
|
|
|
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)
|
|
}
|
|
}
|
|
|
|
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])
|
|
}
|
|
}
|
|
|
|
var benchmarks = map[string]vmBench{
|
|
"pushes": vmBench{
|
|
false, false, false,
|
|
common.Hex2Bytes("600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01"), nil,
|
|
},
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
func NewEnv() *Env {
|
|
return &Env{big.NewInt(10000), 0}
|
|
}
|
|
|
|
func (self *Env) Origin() common.Address { return common.Address{} }
|
|
func (self *Env) BlockNumber() *big.Int { return big.NewInt(0) }
|
|
func (self *Env) AddStructLog(log StructLog) {
|
|
}
|
|
func (self *Env) StructLogs() []StructLog {
|
|
return nil
|
|
}
|
|
|
|
//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) 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 *Log) {
|
|
}
|
|
func (self *Env) Depth() int { return self.depth }
|
|
func (self *Env) SetDepth(i int) { self.depth = i }
|
|
func (self *Env) CanTransfer(from common.Address, balance *big.Int) bool {
|
|
return true
|
|
}
|
|
func (self *Env) Transfer(from, to Account, amount *big.Int) {}
|
|
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 ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
|
|
return nil, nil
|
|
}
|
|
func (self *Env) Create(caller ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
|
|
return nil, common.Address{}, nil
|
|
}
|