mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-27 05:57:28 +00:00
389 lines
10 KiB
Go
389 lines
10 KiB
Go
// Copyright 2015 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/>.
|
|
|
|
// +build evmjit
|
|
|
|
package vm
|
|
|
|
/*
|
|
|
|
void* evmjit_create();
|
|
int evmjit_run(void* _jit, void* _data, void* _env);
|
|
void evmjit_destroy(void* _jit);
|
|
|
|
// Shared library evmjit (e.g. libevmjit.so) is expected to be installed in /usr/local/lib
|
|
// More: https://github.com/ethereum/evmjit
|
|
#cgo LDFLAGS: -levmjit
|
|
*/
|
|
import "C"
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
"unsafe"
|
|
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
)
|
|
|
|
type JitVm struct {
|
|
env Environment
|
|
me ContextRef
|
|
callerAddr []byte
|
|
price *big.Int
|
|
data RuntimeData
|
|
}
|
|
|
|
type i256 [32]byte
|
|
|
|
type RuntimeData struct {
|
|
gas int64
|
|
gasPrice int64
|
|
callData *byte
|
|
callDataSize uint64
|
|
address i256
|
|
caller i256
|
|
origin i256
|
|
callValue i256
|
|
coinBase i256
|
|
difficulty i256
|
|
gasLimit i256
|
|
number uint64
|
|
timestamp int64
|
|
code *byte
|
|
codeSize uint64
|
|
codeHash i256
|
|
}
|
|
|
|
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 {
|
|
return C.GoBytes(unsafe.Pointer(m), C.int(len(m)))
|
|
}
|
|
|
|
func llvm2hashRef(m *i256) []byte {
|
|
return (*[1 << 30]byte)(unsafe.Pointer(m))[:len(m):len(m)]
|
|
}
|
|
|
|
func address2llvm(addr []byte) i256 {
|
|
n := hash2llvm(addr)
|
|
bswap(&n)
|
|
return n
|
|
}
|
|
|
|
// bswap swap bytes of the 256-bit integer on LLVM side
|
|
// TODO: Do not change memory on LLVM side, that can conflict with memory access optimizations
|
|
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
|
|
}
|
|
|
|
// llvm2bytesRef creates a []byte slice that references byte buffer on LLVM side (as of that not controller by GC)
|
|
// User must asure that referenced memory is available to Go until the data is copied or not needed any more
|
|
func llvm2bytesRef(data *byte, length uint64) []byte {
|
|
if length == 0 {
|
|
return nil
|
|
}
|
|
if data == nil {
|
|
panic("Unexpected nil data pointer")
|
|
}
|
|
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 {
|
|
return &JitVm{env: env}
|
|
}
|
|
|
|
func (self *JitVm) Run(me, caller ContextRef, code []byte, value, gas, price *big.Int, callData []byte) (ret []byte, err error) {
|
|
// TODO: depth is increased but never checked by VM. VM should not know about it at all.
|
|
self.env.SetDepth(self.env.Depth() + 1)
|
|
|
|
// TODO: Move it to Env.Call() or sth
|
|
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)
|
|
}
|
|
|
|
if self.me != nil {
|
|
panic("JitVm.Run() can be called only once per JitVm instance")
|
|
}
|
|
|
|
self.me = me
|
|
self.callerAddr = caller.Address()
|
|
self.price = price
|
|
|
|
self.data.gas = gas.Int64()
|
|
self.data.gasPrice = price.Int64()
|
|
self.data.callData = getDataPtr(callData)
|
|
self.data.callDataSize = uint64(len(callData))
|
|
self.data.address = address2llvm(self.me.Address())
|
|
self.data.caller = address2llvm(caller.Address())
|
|
self.data.origin = address2llvm(self.env.Origin())
|
|
self.data.callValue = big2llvm(value)
|
|
self.data.coinBase = address2llvm(self.env.Coinbase())
|
|
self.data.difficulty = big2llvm(self.env.Difficulty())
|
|
self.data.gasLimit = big2llvm(self.env.GasLimit())
|
|
self.data.number = self.env.BlockNumber().Uint64()
|
|
self.data.timestamp = self.env.Time()
|
|
self.data.code = getDataPtr(code)
|
|
self.data.codeSize = uint64(len(code))
|
|
self.data.codeHash = hash2llvm(crypto.Sha3(code)) // TODO: Get already computed hash?
|
|
|
|
jit := C.evmjit_create()
|
|
retCode := C.evmjit_run(jit, unsafe.Pointer(&self.data), unsafe.Pointer(self))
|
|
|
|
if retCode < 0 {
|
|
err = errors.New("OOG from JIT")
|
|
gas.SetInt64(0) // Set gas to 0, JIT does not bother
|
|
} else {
|
|
gas.SetInt64(self.data.gas)
|
|
if retCode == 1 { // RETURN
|
|
ret = C.GoBytes(unsafe.Pointer(self.data.callData), C.int(self.data.callDataSize))
|
|
} else if retCode == 2 { // SUICIDE
|
|
// TODO: Suicide support logic should be moved to Env to be shared by VM implementations
|
|
state := self.Env().State()
|
|
receiverAddr := llvm2hashRef(bswap(&self.data.address))
|
|
receiver := state.GetOrNewStateObject(receiverAddr)
|
|
balance := state.GetBalance(me.Address())
|
|
receiver.AddBalance(balance)
|
|
state.Delete(me.Address())
|
|
}
|
|
}
|
|
|
|
C.evmjit_destroy(jit)
|
|
return
|
|
}
|
|
|
|
func (self *JitVm) Printf(format string, v ...interface{}) VirtualMachine {
|
|
return self
|
|
}
|
|
|
|
func (self *JitVm) Endl() VirtualMachine {
|
|
return self
|
|
}
|
|
|
|
func (self *JitVm) Env() Environment {
|
|
return self.env
|
|
}
|
|
|
|
//export env_sha3
|
|
func env_sha3(dataPtr *byte, length uint64, resultPtr unsafe.Pointer) {
|
|
data := llvm2bytesRef(dataPtr, 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 *int64, _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 := llvm2bytesRef(outDataPtr, outDataLen)
|
|
codeAddr := llvm2hash((*i256)(_codeAddr))
|
|
gas := big.NewInt(*_gas)
|
|
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)
|
|
}
|
|
*_gas = gas.Int64()
|
|
if err == nil {
|
|
copy(outData, out)
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
//export env_create
|
|
func env_create(_vm unsafe.Pointer, _gas *int64, _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{}
|
|
|
|
gas := big.NewInt(*_gas)
|
|
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, params.CreateDataGas)
|
|
gas.Sub(gas, dataGas)
|
|
*result = hash2llvm(ref.Address())
|
|
}
|
|
*_gas = gas.Int64()
|
|
}
|
|
|
|
//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, vm.env.BlockNumber().Uint64()))
|
|
}
|
|
|
|
//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)
|
|
}
|