JitVM: the EVM JIT bridge
This commit is contained in:
Paweł Bylica
parent
4df2e1ef5c
commit
d5f38f5690
2
.gitignore
vendored
2
.gitignore
vendored
@ -15,3 +15,5 @@
|
||||
.#*
|
||||
*#
|
||||
*~
|
||||
.project
|
||||
.settings
|
||||
|
||||
@ -172,47 +172,47 @@ func RunVmTest(p string, t *testing.T) {
|
||||
|
||||
// I've created a new function for each tests so it's easier to identify where the problem lies if any of them fail.
|
||||
func TestVMArithmetic(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmArithmeticTest.json"
|
||||
const fn = "../files/VMTests/vmArithmeticTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestBitwiseLogicOperation(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmBitwiseLogicOperationTest.json"
|
||||
const fn = "../files/VMTests/vmBitwiseLogicOperationTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestBlockInfo(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmBlockInfoTest.json"
|
||||
const fn = "../files/VMTests/vmBlockInfoTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestEnvironmentalInfo(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmEnvironmentalInfoTest.json"
|
||||
const fn = "../files/VMTests/vmEnvironmentalInfoTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestFlowOperation(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmIOandFlowOperationsTest.json"
|
||||
const fn = "../files/VMTests/vmIOandFlowOperationsTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestPushDupSwap(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmPushDupSwapTest.json"
|
||||
const fn = "../files/VMTests/vmPushDupSwapTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestVMSha3(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmSha3Test.json"
|
||||
const fn = "../files/VMTests/vmSha3Test.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestVm(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmtests.json"
|
||||
const fn = "../files/VMTests/vmtests.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
func TestVmLog(t *testing.T) {
|
||||
const fn = "../files/vmtests/vmLogTest.json"
|
||||
const fn = "../files/VMTests/vmLogTest.json"
|
||||
RunVmTest(fn, t)
|
||||
}
|
||||
|
||||
|
||||
361
vm/vm_jit.go
361
vm/vm_jit.go
@ -1,31 +1,376 @@
|
||||
// +build evmjit
|
||||
|
||||
package vm
|
||||
|
||||
import "math/big"
|
||||
/*
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
struct evmjit_result
|
||||
{
|
||||
int32_t returnCode;
|
||||
uint64_t returnDataSize;
|
||||
void* returnData;
|
||||
};
|
||||
|
||||
struct evmjit_result evmjit_run(void* _data, void* _env);
|
||||
|
||||
#cgo LDFLAGS: -levmjit
|
||||
*/
|
||||
import "C"
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"github.com/ethereum/go-ethereum/crypto"
|
||||
"github.com/ethereum/go-ethereum/state"
|
||||
"math/big"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type JitVm struct {
|
||||
env Environment
|
||||
backup *Vm
|
||||
me ContextRef
|
||||
callerAddr []byte
|
||||
price *big.Int
|
||||
data RuntimeData
|
||||
}
|
||||
|
||||
type i256 [32]byte
|
||||
|
||||
const (
|
||||
Gas = iota
|
||||
address
|
||||
Caller
|
||||
Origin
|
||||
CallValue
|
||||
CallDataSize
|
||||
GasPrice
|
||||
CoinBase
|
||||
TimeStamp
|
||||
Number
|
||||
Difficulty
|
||||
GasLimit
|
||||
CodeSize
|
||||
|
||||
_size
|
||||
|
||||
ReturnDataOffset = CallValue // Reuse 2 fields for return data reference
|
||||
ReturnDataSize = CallDataSize
|
||||
SuicideDestAddress = address ///< Suicide balance destination address
|
||||
)
|
||||
|
||||
type RuntimeData struct {
|
||||
elems [_size]i256
|
||||
callData *byte
|
||||
code *byte
|
||||
}
|
||||
|
||||
func hash2llvm(h []byte) i256 {
|
||||
var m i256
|
||||
copy(m[len(m)-len(h):], h) // right aligned copy
|
||||
return m
|
||||
}
|
||||
|
||||
func llvm2hash(m *i256) []byte {
|
||||
if len(m) != 32 {
|
||||
panic("I don't know Go!")
|
||||
}
|
||||
return C.GoBytes(unsafe.Pointer(m), 32)
|
||||
}
|
||||
|
||||
func address2llvm(addr []byte) i256 {
|
||||
n := hash2llvm(addr)
|
||||
bswap(&n)
|
||||
return n
|
||||
}
|
||||
|
||||
func bswap(m *i256) *i256 {
|
||||
for i, l := 0, len(m); i < l/2; i++ {
|
||||
m[i], m[l-i-1] = m[l-i-1], m[i]
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
func trim(m []byte) []byte {
|
||||
skip := 0
|
||||
for i := 0; i < len(m); i++ {
|
||||
if m[i] == 0 {
|
||||
skip++
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
return m[skip:]
|
||||
}
|
||||
|
||||
func getDataPtr(m []byte) *byte {
|
||||
var p *byte
|
||||
if len(m) > 0 {
|
||||
p = &m[0]
|
||||
}
|
||||
return p
|
||||
}
|
||||
|
||||
func big2llvm(n *big.Int) i256 {
|
||||
m := hash2llvm(n.Bytes())
|
||||
bswap(&m)
|
||||
return m
|
||||
}
|
||||
|
||||
func llvm2big(m *i256) *big.Int {
|
||||
n := big.NewInt(0)
|
||||
for i := 0; i < len(m); i++ {
|
||||
b := big.NewInt(int64(m[i]))
|
||||
b.Lsh(b, uint(i)*8)
|
||||
n.Add(n, b)
|
||||
}
|
||||
return n
|
||||
}
|
||||
|
||||
func llvm2bytes(data *byte, length uint64) []byte {
|
||||
if length == 0 {
|
||||
return nil
|
||||
}
|
||||
if data == nil {
|
||||
panic("llvm2bytes: nil pointer to data")
|
||||
}
|
||||
return (*[1 << 30]byte)(unsafe.Pointer(data))[:length:length]
|
||||
}
|
||||
|
||||
func untested(condition bool, message string) {
|
||||
if condition {
|
||||
panic("Condition `" + message + "` tested. Remove assert.")
|
||||
}
|
||||
}
|
||||
|
||||
func assert(condition bool, message string) {
|
||||
if !condition {
|
||||
panic("Assert `" + message + "` failed!")
|
||||
}
|
||||
}
|
||||
|
||||
func NewJitVm(env Environment) *JitVm {
|
||||
backupVm := New(env)
|
||||
return &JitVm{env: env, backup: backupVm}
|
||||
return &JitVm{env: env}
|
||||
}
|
||||
|
||||
func (self *JitVm) Run(me, caller ContextRef, code []byte, value, gas, price *big.Int, callData []byte) (ret []byte, err error) {
|
||||
return self.backup.Run(me, caller, code, value, gas, price, callData)
|
||||
self.env.SetDepth(self.env.Depth() + 1)
|
||||
|
||||
if Precompiled[string(me.Address())] != nil {
|
||||
// if it's address of precopiled contract
|
||||
// fallback to standard VM
|
||||
stdVm := New(self.env)
|
||||
return stdVm.Run(me, caller, code, value, gas, price, callData)
|
||||
}
|
||||
|
||||
self.me = me // FIXME: Make sure Run() is not used more than once
|
||||
self.callerAddr = caller.Address()
|
||||
self.price = price
|
||||
|
||||
self.data.elems[Gas] = big2llvm(gas)
|
||||
self.data.elems[address] = address2llvm(self.me.Address())
|
||||
self.data.elems[Caller] = address2llvm(caller.Address())
|
||||
self.data.elems[Origin] = address2llvm(self.env.Origin())
|
||||
self.data.elems[CallValue] = big2llvm(value)
|
||||
self.data.elems[CallDataSize] = big2llvm(big.NewInt(int64(len(callData)))) // TODO: Keep call data size as i64
|
||||
self.data.elems[GasPrice] = big2llvm(price)
|
||||
self.data.elems[CoinBase] = address2llvm(self.env.Coinbase())
|
||||
self.data.elems[TimeStamp] = big2llvm(big.NewInt(self.env.Time())) // TODO: Keep timestamp as i64
|
||||
self.data.elems[Number] = big2llvm(self.env.BlockNumber())
|
||||
self.data.elems[Difficulty] = big2llvm(self.env.Difficulty())
|
||||
self.data.elems[GasLimit] = big2llvm(self.env.GasLimit())
|
||||
self.data.elems[CodeSize] = big2llvm(big.NewInt(int64(len(code)))) // TODO: Keep code size as i64
|
||||
self.data.callData = getDataPtr(callData)
|
||||
self.data.code = getDataPtr(code)
|
||||
|
||||
result := C.evmjit_run(unsafe.Pointer(&self.data), unsafe.Pointer(self))
|
||||
//fmt.Printf("JIT result: %d\n", r)
|
||||
|
||||
if result.returnCode >= 100 {
|
||||
err = errors.New("OOG from JIT")
|
||||
gas.SetInt64(0) // Set gas to 0, JIT does not bother
|
||||
} else {
|
||||
gasLeft := llvm2big(&self.data.elems[Gas]) // TODO: Set value directly to gas instance
|
||||
gas.Set(gasLeft)
|
||||
if result.returnCode == 1 { // RETURN
|
||||
ret = C.GoBytes(result.returnData, C.int(result.returnDataSize))
|
||||
C.free(result.returnData)
|
||||
} else if result.returnCode == 2 { // SUICIDE
|
||||
state := self.Env().State()
|
||||
receiverAddr := llvm2hash(bswap(&self.data.elems[address]))
|
||||
receiverAddr = trim(receiverAddr) // TODO: trim all zeros or subslice 160bits?
|
||||
receiver := state.GetOrNewStateObject(receiverAddr)
|
||||
balance := state.GetBalance(me.Address())
|
||||
receiver.AddAmount(balance)
|
||||
state.Delete(me.Address())
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (self *JitVm) Printf(format string, v ...interface{}) VirtualMachine {
|
||||
return self.backup.Printf(format, v)
|
||||
return self
|
||||
}
|
||||
|
||||
func (self *JitVm) Endl() VirtualMachine {
|
||||
return self.backup.Endl()
|
||||
return self
|
||||
}
|
||||
|
||||
func (self *JitVm) Env() Environment {
|
||||
return self.env
|
||||
}
|
||||
|
||||
//go is nice
|
||||
//export env_sha3
|
||||
func env_sha3(dataPtr unsafe.Pointer, length uint64, resultPtr unsafe.Pointer) {
|
||||
data := C.GoBytes(dataPtr, C.int(length))
|
||||
hash := crypto.Sha3(data)
|
||||
result := (*i256)(resultPtr)
|
||||
*result = hash2llvm(hash)
|
||||
}
|
||||
|
||||
//export env_sstore
|
||||
func env_sstore(vmPtr unsafe.Pointer, indexPtr unsafe.Pointer, valuePtr unsafe.Pointer) {
|
||||
vm := (*JitVm)(vmPtr)
|
||||
index := llvm2hash(bswap((*i256)(indexPtr)))
|
||||
value := llvm2hash(bswap((*i256)(valuePtr)))
|
||||
value = trim(value)
|
||||
if len(value) == 0 {
|
||||
prevValue := vm.env.State().GetState(vm.me.Address(), index)
|
||||
if len(prevValue) != 0 {
|
||||
vm.Env().State().Refund(vm.callerAddr, GasSStoreRefund)
|
||||
}
|
||||
}
|
||||
|
||||
vm.env.State().SetState(vm.me.Address(), index, value)
|
||||
}
|
||||
|
||||
//export env_sload
|
||||
func env_sload(vmPtr unsafe.Pointer, indexPtr unsafe.Pointer, resultPtr unsafe.Pointer) {
|
||||
vm := (*JitVm)(vmPtr)
|
||||
index := llvm2hash(bswap((*i256)(indexPtr)))
|
||||
value := vm.env.State().GetState(vm.me.Address(), index)
|
||||
result := (*i256)(resultPtr)
|
||||
*result = hash2llvm(value)
|
||||
bswap(result)
|
||||
}
|
||||
|
||||
//export env_balance
|
||||
func env_balance(_vm unsafe.Pointer, _addr unsafe.Pointer, _result unsafe.Pointer) {
|
||||
vm := (*JitVm)(_vm)
|
||||
addr := llvm2hash((*i256)(_addr))
|
||||
balance := vm.Env().State().GetBalance(addr)
|
||||
result := (*i256)(_result)
|
||||
*result = big2llvm(balance)
|
||||
}
|
||||
|
||||
//export env_blockhash
|
||||
func env_blockhash(_vm unsafe.Pointer, _number unsafe.Pointer, _result unsafe.Pointer) {
|
||||
vm := (*JitVm)(_vm)
|
||||
number := llvm2big((*i256)(_number))
|
||||
result := (*i256)(_result)
|
||||
|
||||
currNumber := vm.Env().BlockNumber()
|
||||
limit := big.NewInt(0).Sub(currNumber, big.NewInt(256))
|
||||
if number.Cmp(limit) >= 0 && number.Cmp(currNumber) < 0 {
|
||||
hash := vm.Env().GetHash(uint64(number.Int64()))
|
||||
*result = hash2llvm(hash)
|
||||
} else {
|
||||
*result = i256{}
|
||||
}
|
||||
}
|
||||
|
||||
//export env_call
|
||||
func env_call(_vm unsafe.Pointer, _gas unsafe.Pointer, _receiveAddr unsafe.Pointer, _value unsafe.Pointer, inDataPtr unsafe.Pointer, inDataLen uint64, outDataPtr *byte, outDataLen uint64, _codeAddr unsafe.Pointer) bool {
|
||||
vm := (*JitVm)(_vm)
|
||||
|
||||
//fmt.Printf("env_call (depth %d)\n", vm.Env().Depth())
|
||||
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
fmt.Printf("Recovered in env_call (depth %d, out %p %d): %s\n", vm.Env().Depth(), outDataPtr, outDataLen, r)
|
||||
}
|
||||
}()
|
||||
|
||||
balance := vm.Env().State().GetBalance(vm.me.Address())
|
||||
value := llvm2big((*i256)(_value))
|
||||
|
||||
if balance.Cmp(value) >= 0 {
|
||||
receiveAddr := llvm2hash((*i256)(_receiveAddr))
|
||||
inData := C.GoBytes(inDataPtr, C.int(inDataLen))
|
||||
outData := llvm2bytes(outDataPtr, outDataLen)
|
||||
codeAddr := llvm2hash((*i256)(_codeAddr))
|
||||
llvmGas := (*i256)(_gas)
|
||||
gas := llvm2big(llvmGas)
|
||||
var out []byte
|
||||
var err error
|
||||
if bytes.Equal(codeAddr, receiveAddr) {
|
||||
out, err = vm.env.Call(vm.me, codeAddr, inData, gas, vm.price, value)
|
||||
} else {
|
||||
out, err = vm.env.CallCode(vm.me, codeAddr, inData, gas, vm.price, value)
|
||||
}
|
||||
*llvmGas = big2llvm(gas)
|
||||
if err == nil {
|
||||
copy(outData, out)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
//export env_create
|
||||
func env_create(_vm unsafe.Pointer, _gas unsafe.Pointer, _value unsafe.Pointer, initDataPtr unsafe.Pointer, initDataLen uint64, _result unsafe.Pointer) {
|
||||
vm := (*JitVm)(_vm)
|
||||
|
||||
value := llvm2big((*i256)(_value))
|
||||
initData := C.GoBytes(initDataPtr, C.int(initDataLen)) // TODO: Unnecessary if low balance
|
||||
result := (*i256)(_result)
|
||||
*result = i256{}
|
||||
|
||||
llvmGas := (*i256)(_gas)
|
||||
gas := llvm2big(llvmGas)
|
||||
|
||||
ret, suberr, ref := vm.env.Create(vm.me, nil, initData, gas, vm.price, value)
|
||||
if suberr == nil {
|
||||
dataGas := big.NewInt(int64(len(ret))) // TODO: Nto the best design. env.Create can do it, it has the reference to gas counter
|
||||
dataGas.Mul(dataGas, GasCreateByte)
|
||||
gas.Sub(gas, dataGas)
|
||||
*result = hash2llvm(ref.Address())
|
||||
}
|
||||
*llvmGas = big2llvm(gas)
|
||||
}
|
||||
|
||||
//export env_log
|
||||
func env_log(_vm unsafe.Pointer, dataPtr unsafe.Pointer, dataLen uint64, _topic1 unsafe.Pointer, _topic2 unsafe.Pointer, _topic3 unsafe.Pointer, _topic4 unsafe.Pointer) {
|
||||
vm := (*JitVm)(_vm)
|
||||
|
||||
data := C.GoBytes(dataPtr, C.int(dataLen))
|
||||
|
||||
topics := make([][]byte, 0, 4)
|
||||
if _topic1 != nil {
|
||||
topics = append(topics, llvm2hash((*i256)(_topic1)))
|
||||
}
|
||||
if _topic2 != nil {
|
||||
topics = append(topics, llvm2hash((*i256)(_topic2)))
|
||||
}
|
||||
if _topic3 != nil {
|
||||
topics = append(topics, llvm2hash((*i256)(_topic3)))
|
||||
}
|
||||
if _topic4 != nil {
|
||||
topics = append(topics, llvm2hash((*i256)(_topic4)))
|
||||
}
|
||||
|
||||
vm.Env().AddLog(state.NewLog(vm.me.Address(), topics, data))
|
||||
}
|
||||
|
||||
//export env_extcode
|
||||
func env_extcode(_vm unsafe.Pointer, _addr unsafe.Pointer, o_size *uint64) *byte {
|
||||
vm := (*JitVm)(_vm)
|
||||
addr := llvm2hash((*i256)(_addr))
|
||||
code := vm.Env().State().GetCode(addr)
|
||||
*o_size = uint64(len(code))
|
||||
return getDataPtr(code)
|
||||
}
|
||||
|
||||
10
vm/vm_jit_fake.go
Normal file
10
vm/vm_jit_fake.go
Normal file
@ -0,0 +1,10 @@
|
||||
// +build !evmjit
|
||||
|
||||
package vm
|
||||
|
||||
import "fmt"
|
||||
|
||||
func NewJitVm(env Environment) VirtualMachine {
|
||||
fmt.Printf("Warning! EVM JIT not enabled.\n")
|
||||
return New(env)
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user