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Diffstat (limited to 'core/vm/vm_jit.go')
| -rw-r--r-- | core/vm/vm_jit.go | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/core/vm/vm_jit.go b/core/vm/vm_jit.go deleted file mode 100644 index eb3acfb10..000000000 --- a/core/vm/vm_jit.go +++ /dev/null @@ -1,389 +0,0 @@ -// 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 EVM - 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 ensure 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 EVM) *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 precompiled 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.Keccak256(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() EVM { - return self.env -} - -//export env_sha3 -func env_sha3(dataPtr *byte, length uint64, resultPtr unsafe.Pointer) { - data := llvm2bytesRef(dataPtr, length) - hash := crypto.Keccak256(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: Not 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) -}*/ |