mirror of https://github.com/ethereum/go-ethereum
core/vm: remove JIT VM codes (#16362)
hydai
7 years ago
committed by
Péter Szilágyi
parent
23ac783332
commit
84c5db5409
@ -1,389 +0,0 @@ |
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// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// +build evmjit
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package vm |
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/* |
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void* evmjit_create(); |
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int evmjit_run(void* _jit, void* _data, void* _env); |
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void evmjit_destroy(void* _jit); |
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// Shared library evmjit (e.g. libevmjit.so) is expected to be installed in /usr/local/lib
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// More: https://github.com/ethereum/evmjit
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#cgo LDFLAGS: -levmjit |
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*/ |
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import "C" |
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/* |
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import ( |
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"bytes" |
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"errors" |
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"fmt" |
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"math/big" |
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"unsafe" |
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"github.com/ethereum/go-ethereum/core/state" |
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"github.com/ethereum/go-ethereum/crypto" |
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"github.com/ethereum/go-ethereum/params" |
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) |
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type JitVm struct { |
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env EVM |
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me ContextRef |
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callerAddr []byte |
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price *big.Int |
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data RuntimeData |
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} |
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type i256 [32]byte |
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type RuntimeData struct { |
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gas int64 |
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gasPrice int64 |
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callData *byte |
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callDataSize uint64 |
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address i256 |
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caller i256 |
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origin i256 |
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callValue i256 |
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coinBase i256 |
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difficulty i256 |
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gasLimit i256 |
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number uint64 |
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timestamp int64 |
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code *byte |
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codeSize uint64 |
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codeHash i256 |
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} |
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func hash2llvm(h []byte) i256 { |
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var m i256 |
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copy(m[len(m)-len(h):], h) // right aligned copy
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return m |
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} |
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func llvm2hash(m *i256) []byte { |
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return C.GoBytes(unsafe.Pointer(m), C.int(len(m))) |
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} |
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func llvm2hashRef(m *i256) []byte { |
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return (*[1 << 30]byte)(unsafe.Pointer(m))[:len(m):len(m)] |
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} |
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func address2llvm(addr []byte) i256 { |
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n := hash2llvm(addr) |
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bswap(&n) |
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return n |
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} |
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// bswap swap bytes of the 256-bit integer on LLVM side
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// TODO: Do not change memory on LLVM side, that can conflict with memory access optimizations
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func bswap(m *i256) *i256 { |
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for i, l := 0, len(m); i < l/2; i++ { |
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m[i], m[l-i-1] = m[l-i-1], m[i] |
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} |
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return m |
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} |
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func trim(m []byte) []byte { |
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skip := 0 |
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for i := 0; i < len(m); i++ { |
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if m[i] == 0 { |
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skip++ |
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} else { |
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break |
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} |
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} |
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return m[skip:] |
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} |
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func getDataPtr(m []byte) *byte { |
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var p *byte |
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if len(m) > 0 { |
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p = &m[0] |
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} |
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return p |
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} |
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func big2llvm(n *big.Int) i256 { |
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m := hash2llvm(n.Bytes()) |
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bswap(&m) |
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return m |
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} |
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func llvm2big(m *i256) *big.Int { |
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n := big.NewInt(0) |
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for i := 0; i < len(m); i++ { |
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b := big.NewInt(int64(m[i])) |
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b.Lsh(b, uint(i)*8) |
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n.Add(n, b) |
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} |
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return n |
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} |
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// llvm2bytesRef creates a []byte slice that references byte buffer on LLVM side (as of that not controller by GC)
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// User must ensure that referenced memory is available to Go until the data is copied or not needed any more
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func llvm2bytesRef(data *byte, length uint64) []byte { |
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if length == 0 { |
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return nil |
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} |
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if data == nil { |
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panic("Unexpected nil data pointer") |
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} |
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return (*[1 << 30]byte)(unsafe.Pointer(data))[:length:length] |
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} |
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func untested(condition bool, message string) { |
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if condition { |
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panic("Condition `" + message + "` tested. Remove assert.") |
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} |
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} |
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func assert(condition bool, message string) { |
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if !condition { |
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panic("Assert `" + message + "` failed!") |
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} |
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} |
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func NewJitVm(env EVM) *JitVm { |
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return &JitVm{env: env} |
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} |
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func (self *JitVm) Run(me, caller ContextRef, code []byte, value, gas, price *big.Int, callData []byte) (ret []byte, err error) { |
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// TODO: depth is increased but never checked by VM. VM should not know about it at all.
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self.env.SetDepth(self.env.Depth() + 1) |
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// TODO: Move it to Env.Call() or sth
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if Precompiled[string(me.Address())] != nil { |
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// if it's address of precompiled contract
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// fallback to standard VM
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stdVm := New(self.env) |
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return stdVm.Run(me, caller, code, value, gas, price, callData) |
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} |
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if self.me != nil { |
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panic("JitVm.Run() can be called only once per JitVm instance") |
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} |
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self.me = me |
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self.callerAddr = caller.Address() |
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self.price = price |
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self.data.gas = gas.Int64() |
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self.data.gasPrice = price.Int64() |
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self.data.callData = getDataPtr(callData) |
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self.data.callDataSize = uint64(len(callData)) |
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self.data.address = address2llvm(self.me.Address()) |
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self.data.caller = address2llvm(caller.Address()) |
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self.data.origin = address2llvm(self.env.Origin()) |
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self.data.callValue = big2llvm(value) |
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self.data.coinBase = address2llvm(self.env.Coinbase()) |
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self.data.difficulty = big2llvm(self.env.Difficulty()) |
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self.data.gasLimit = big2llvm(self.env.GasLimit()) |
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self.data.number = self.env.BlockNumber().Uint64() |
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self.data.timestamp = self.env.Time() |
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self.data.code = getDataPtr(code) |
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self.data.codeSize = uint64(len(code)) |
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self.data.codeHash = hash2llvm(crypto.Keccak256(code)) // TODO: Get already computed hash?
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jit := C.evmjit_create() |
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retCode := C.evmjit_run(jit, unsafe.Pointer(&self.data), unsafe.Pointer(self)) |
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if retCode < 0 { |
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err = errors.New("OOG from JIT") |
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gas.SetInt64(0) // Set gas to 0, JIT does not bother
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} else { |
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gas.SetInt64(self.data.gas) |
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if retCode == 1 { // RETURN
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ret = C.GoBytes(unsafe.Pointer(self.data.callData), C.int(self.data.callDataSize)) |
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} else if retCode == 2 { // SUICIDE
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// TODO: Suicide support logic should be moved to Env to be shared by VM implementations
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state := self.Env().State() |
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receiverAddr := llvm2hashRef(bswap(&self.data.address)) |
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receiver := state.GetOrNewStateObject(receiverAddr) |
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balance := state.GetBalance(me.Address()) |
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receiver.AddBalance(balance) |
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state.Delete(me.Address()) |
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} |
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} |
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C.evmjit_destroy(jit) |
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return |
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} |
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func (self *JitVm) Printf(format string, v ...interface{}) VirtualMachine { |
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return self |
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} |
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func (self *JitVm) Endl() VirtualMachine { |
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return self |
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} |
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func (self *JitVm) Env() EVM { |
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return self.env |
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} |
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//export env_sha3
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func env_sha3(dataPtr *byte, length uint64, resultPtr unsafe.Pointer) { |
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data := llvm2bytesRef(dataPtr, length) |
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hash := crypto.Keccak256(data) |
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result := (*i256)(resultPtr) |
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*result = hash2llvm(hash) |
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} |
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//export env_sstore
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func env_sstore(vmPtr unsafe.Pointer, indexPtr unsafe.Pointer, valuePtr unsafe.Pointer) { |
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vm := (*JitVm)(vmPtr) |
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index := llvm2hash(bswap((*i256)(indexPtr))) |
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value := llvm2hash(bswap((*i256)(valuePtr))) |
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value = trim(value) |
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if len(value) == 0 { |
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prevValue := vm.env.State().GetState(vm.me.Address(), index) |
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if len(prevValue) != 0 { |
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vm.Env().State().Refund(vm.callerAddr, GasSStoreRefund) |
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} |
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} |
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vm.env.State().SetState(vm.me.Address(), index, value) |
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} |
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//export env_sload
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func env_sload(vmPtr unsafe.Pointer, indexPtr unsafe.Pointer, resultPtr unsafe.Pointer) { |
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vm := (*JitVm)(vmPtr) |
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index := llvm2hash(bswap((*i256)(indexPtr))) |
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value := vm.env.State().GetState(vm.me.Address(), index) |
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result := (*i256)(resultPtr) |
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*result = hash2llvm(value) |
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bswap(result) |
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} |
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//export env_balance
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func env_balance(_vm unsafe.Pointer, _addr unsafe.Pointer, _result unsafe.Pointer) { |
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vm := (*JitVm)(_vm) |
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addr := llvm2hash((*i256)(_addr)) |
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balance := vm.Env().State().GetBalance(addr) |
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result := (*i256)(_result) |
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*result = big2llvm(balance) |
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} |
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//export env_blockhash
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func env_blockhash(_vm unsafe.Pointer, _number unsafe.Pointer, _result unsafe.Pointer) { |
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vm := (*JitVm)(_vm) |
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number := llvm2big((*i256)(_number)) |
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result := (*i256)(_result) |
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currNumber := vm.Env().BlockNumber() |
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limit := big.NewInt(0).Sub(currNumber, big.NewInt(256)) |
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if number.Cmp(limit) >= 0 && number.Cmp(currNumber) < 0 { |
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hash := vm.Env().GetHash(uint64(number.Int64())) |
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*result = hash2llvm(hash) |
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} else { |
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*result = i256{} |
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} |
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} |
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//export env_call
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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 { |
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vm := (*JitVm)(_vm) |
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//fmt.Printf("env_call (depth %d)\n", vm.Env().Depth())
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defer func() { |
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if r := recover(); r != nil { |
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fmt.Printf("Recovered in env_call (depth %d, out %p %d): %s\n", vm.Env().Depth(), outDataPtr, outDataLen, r) |
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} |
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}() |
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balance := vm.Env().State().GetBalance(vm.me.Address()) |
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value := llvm2big((*i256)(_value)) |
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if balance.Cmp(value) >= 0 { |
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receiveAddr := llvm2hash((*i256)(_receiveAddr)) |
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inData := C.GoBytes(inDataPtr, C.int(inDataLen)) |
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outData := llvm2bytesRef(outDataPtr, outDataLen) |
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codeAddr := llvm2hash((*i256)(_codeAddr)) |
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gas := big.NewInt(*_gas) |
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var out []byte |
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var err error |
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if bytes.Equal(codeAddr, receiveAddr) { |
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out, err = vm.env.Call(vm.me, codeAddr, inData, gas, vm.price, value) |
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} else { |
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out, err = vm.env.CallCode(vm.me, codeAddr, inData, gas, vm.price, value) |
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} |
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*_gas = gas.Int64() |
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if err == nil { |
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copy(outData, out) |
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return true |
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} |
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} |
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return false |
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} |
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//export env_create
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func env_create(_vm unsafe.Pointer, _gas *int64, _value unsafe.Pointer, initDataPtr unsafe.Pointer, initDataLen uint64, _result unsafe.Pointer) { |
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vm := (*JitVm)(_vm) |
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value := llvm2big((*i256)(_value)) |
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initData := C.GoBytes(initDataPtr, C.int(initDataLen)) // TODO: Unnecessary if low balance
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result := (*i256)(_result) |
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*result = i256{} |
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gas := big.NewInt(*_gas) |
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ret, suberr, ref := vm.env.Create(vm.me, nil, initData, gas, vm.price, value) |
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if suberr == nil { |
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dataGas := big.NewInt(int64(len(ret))) // TODO: Not the best design. env.Create can do it, it has the reference to gas counter
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dataGas.Mul(dataGas, params.CreateDataGas) |
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gas.Sub(gas, dataGas) |
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*result = hash2llvm(ref.Address()) |
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} |
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*_gas = gas.Int64() |
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} |
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//export env_log
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func env_log(_vm unsafe.Pointer, dataPtr unsafe.Pointer, dataLen uint64, _topic1 unsafe.Pointer, _topic2 unsafe.Pointer, _topic3 unsafe.Pointer, _topic4 unsafe.Pointer) { |
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vm := (*JitVm)(_vm) |
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data := C.GoBytes(dataPtr, C.int(dataLen)) |
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topics := make([][]byte, 0, 4) |
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if _topic1 != nil { |
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topics = append(topics, llvm2hash((*i256)(_topic1))) |
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} |
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if _topic2 != nil { |
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topics = append(topics, llvm2hash((*i256)(_topic2))) |
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} |
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if _topic3 != nil { |
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topics = append(topics, llvm2hash((*i256)(_topic3))) |
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} |
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if _topic4 != nil { |
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topics = append(topics, llvm2hash((*i256)(_topic4))) |
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} |
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vm.Env().AddLog(state.NewLog(vm.me.Address(), topics, data, vm.env.BlockNumber().Uint64())) |
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} |
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//export env_extcode
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func env_extcode(_vm unsafe.Pointer, _addr unsafe.Pointer, o_size *uint64) *byte { |
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vm := (*JitVm)(_vm) |
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addr := llvm2hash((*i256)(_addr)) |
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code := vm.Env().State().GetCode(addr) |
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*o_size = uint64(len(code)) |
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return getDataPtr(code) |
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}*/ |
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@ -1,19 +0,0 @@ |
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// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// +build !evmjit
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package vm |
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