forked from mirror/go-ethereum
Merge pull request #1964 from obscuren/evm-runtime
core/vm/runtime: added simple execution runtimerelease/1.3.2^2
Jeffrey Wilcke
9 years ago
commit
23f42d9463
@ -0,0 +1,18 @@ |
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// Copyright 2014 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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// Package runtime provides a basic execution model for executing EVM code.
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package runtime |
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@ -0,0 +1,106 @@ |
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// Copyright 2014 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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package runtime |
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import ( |
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"math/big" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/core" |
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"github.com/ethereum/go-ethereum/core/state" |
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"github.com/ethereum/go-ethereum/core/vm" |
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) |
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// Env is a basic runtime environment required for running the EVM.
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type Env struct { |
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depth int |
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state *state.StateDB |
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origin common.Address |
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coinbase common.Address |
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number *big.Int |
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time *big.Int |
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difficulty *big.Int |
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gasLimit *big.Int |
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logs []vm.StructLog |
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getHashFn func(uint64) common.Hash |
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} |
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// NewEnv returns a new vm.Environment
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func NewEnv(cfg *Config, state *state.StateDB) vm.Environment { |
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return &Env{ |
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state: state, |
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origin: cfg.Origin, |
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coinbase: cfg.Coinbase, |
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number: cfg.BlockNumber, |
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time: cfg.Time, |
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difficulty: cfg.Difficulty, |
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gasLimit: cfg.GasLimit, |
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} |
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} |
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func (self *Env) StructLogs() []vm.StructLog { |
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return self.logs |
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} |
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func (self *Env) AddStructLog(log vm.StructLog) { |
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self.logs = append(self.logs, log) |
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} |
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func (self *Env) Origin() common.Address { return self.origin } |
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func (self *Env) BlockNumber() *big.Int { return self.number } |
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func (self *Env) Coinbase() common.Address { return self.coinbase } |
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func (self *Env) Time() *big.Int { return self.time } |
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func (self *Env) Difficulty() *big.Int { return self.difficulty } |
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func (self *Env) Db() vm.Database { return self.state } |
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func (self *Env) GasLimit() *big.Int { return self.gasLimit } |
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func (self *Env) VmType() vm.Type { return vm.StdVmTy } |
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func (self *Env) GetHash(n uint64) common.Hash { |
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return self.getHashFn(n) |
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} |
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func (self *Env) AddLog(log *vm.Log) { |
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self.state.AddLog(log) |
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} |
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func (self *Env) Depth() int { return self.depth } |
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func (self *Env) SetDepth(i int) { self.depth = i } |
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func (self *Env) CanTransfer(from common.Address, balance *big.Int) bool { |
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return self.state.GetBalance(from).Cmp(balance) >= 0 |
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} |
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func (self *Env) MakeSnapshot() vm.Database { |
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return self.state.Copy() |
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} |
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func (self *Env) SetSnapshot(copy vm.Database) { |
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self.state.Set(copy.(*state.StateDB)) |
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} |
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func (self *Env) Transfer(from, to vm.Account, amount *big.Int) { |
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core.Transfer(from, to, amount) |
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} |
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func (self *Env) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) { |
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return core.Call(self, caller, addr, data, gas, price, value) |
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} |
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func (self *Env) CallCode(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) { |
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return core.CallCode(self, caller, addr, data, gas, price, value) |
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} |
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func (self *Env) Create(caller vm.ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) { |
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return core.Create(self, caller, data, gas, price, value) |
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} |
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@ -0,0 +1,121 @@ |
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// Copyright 2014 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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package runtime |
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import ( |
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"math/big" |
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"time" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/core/state" |
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"github.com/ethereum/go-ethereum/core/vm" |
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"github.com/ethereum/go-ethereum/crypto" |
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"github.com/ethereum/go-ethereum/ethdb" |
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) |
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// Config is a basic type specifing certain configuration flags for running
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// the EVM.
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type Config struct { |
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Difficulty *big.Int |
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Origin common.Address |
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Coinbase common.Address |
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BlockNumber *big.Int |
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Time *big.Int |
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GasLimit *big.Int |
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GasPrice *big.Int |
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Value *big.Int |
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DisableJit bool // "disable" so it's enabled by default
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Debug bool |
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GetHashFn func(n uint64) common.Hash |
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} |
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// sets defaults on the config
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func setDefaults(cfg *Config) { |
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if cfg.Difficulty == nil { |
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cfg.Difficulty = new(big.Int) |
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} |
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if cfg.Time == nil { |
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cfg.Time = big.NewInt(time.Now().Unix()) |
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} |
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if cfg.GasLimit == nil { |
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cfg.GasLimit = new(big.Int).Set(common.MaxBig) |
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} |
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if cfg.GasPrice == nil { |
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cfg.GasPrice = new(big.Int) |
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} |
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if cfg.Value == nil { |
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cfg.Value = new(big.Int) |
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} |
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if cfg.BlockNumber == nil { |
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cfg.BlockNumber = new(big.Int) |
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} |
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if cfg.GetHashFn == nil { |
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cfg.GetHashFn = func(n uint64) common.Hash { |
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return common.BytesToHash(crypto.Sha3([]byte(new(big.Int).SetUint64(n).String()))) |
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} |
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} |
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} |
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// Execute executes the code using the input as call data during the execution.
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// It returns the EVM's return value, the new state and an error if it failed.
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//
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// Executes sets up a in memory, temporarily, environment for the execution of
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// the given code. It enabled the JIT by default and make sure that it's restored
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// to it's original state afterwards.
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func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) { |
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if cfg == nil { |
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cfg = new(Config) |
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} |
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setDefaults(cfg) |
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// defer the call to setting back the original values
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defer func(debug, forceJit, enableJit bool) { |
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vm.Debug = debug |
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vm.ForceJit = forceJit |
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vm.EnableJit = enableJit |
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}(vm.Debug, vm.ForceJit, vm.EnableJit) |
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vm.ForceJit = !cfg.DisableJit |
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vm.EnableJit = !cfg.DisableJit |
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vm.Debug = cfg.Debug |
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var ( |
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db, _ = ethdb.NewMemDatabase() |
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statedb, _ = state.New(common.Hash{}, db) |
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vmenv = NewEnv(cfg, statedb) |
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sender = statedb.CreateAccount(cfg.Origin) |
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receiver = statedb.CreateAccount(common.StringToAddress("contract")) |
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) |
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// set the receiver's (the executing contract) code for execution.
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receiver.SetCode(code) |
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// Call the code with the given configuration.
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ret, err := vmenv.Call( |
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sender, |
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receiver.Address(), |
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input, |
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cfg.GasLimit, |
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cfg.GasPrice, |
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cfg.Value, |
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) |
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if cfg.Debug { |
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vm.StdErrFormat(vmenv.StructLogs()) |
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} |
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return ret, statedb, err |
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} |
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@ -0,0 +1,34 @@ |
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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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package runtime_test |
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import ( |
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"fmt" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/core/vm/runtime" |
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) |
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func ExampleExecute() { |
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ret, _, err := runtime.Execute(common.Hex2Bytes("6060604052600a8060106000396000f360606040526008565b00"), nil, nil) |
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if err != nil { |
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fmt.Println(err) |
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} |
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fmt.Println(ret) |
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// Output:
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// [96 96 96 64 82 96 8 86 91 0]
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} |
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@ -0,0 +1,120 @@ |
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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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package runtime |
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import ( |
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"strings" |
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"testing" |
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"github.com/ethereum/go-ethereum/accounts/abi" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/core/vm" |
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) |
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func TestDefaults(t *testing.T) { |
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cfg := new(Config) |
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setDefaults(cfg) |
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if cfg.Difficulty == nil { |
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t.Error("expected difficulty to be non nil") |
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} |
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if cfg.Time == nil { |
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t.Error("expected time to be non nil") |
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} |
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if cfg.GasLimit == nil { |
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t.Error("expected time to be non nil") |
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} |
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if cfg.GasPrice == nil { |
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t.Error("expected time to be non nil") |
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} |
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if cfg.Value == nil { |
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t.Error("expected time to be non nil") |
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} |
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if cfg.GetHashFn == nil { |
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t.Error("expected time to be non nil") |
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} |
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if cfg.BlockNumber == nil { |
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t.Error("expected block number to be non nil") |
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} |
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} |
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func TestEnvironment(t *testing.T) { |
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defer func() { |
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if r := recover(); r != nil { |
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t.Fatalf("crashed with: %v", r) |
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} |
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}() |
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Execute([]byte{ |
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byte(vm.DIFFICULTY), |
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byte(vm.TIMESTAMP), |
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byte(vm.GASLIMIT), |
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byte(vm.PUSH1), |
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byte(vm.ORIGIN), |
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byte(vm.BLOCKHASH), |
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byte(vm.COINBASE), |
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}, nil, nil) |
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} |
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func TestRestoreDefaults(t *testing.T) { |
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Execute(nil, nil, &Config{Debug: true}) |
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if vm.ForceJit { |
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t.Error("expected force jit to be disabled") |
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} |
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if vm.Debug { |
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t.Error("expected debug to be disabled") |
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} |
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if vm.EnableJit { |
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t.Error("expected jit to be disabled") |
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} |
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} |
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func BenchmarkCall(b *testing.B) { |
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var definition = `[{"constant":true,"inputs":[],"name":"seller","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"abort","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"value","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[],"name":"refund","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"buyer","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmReceived","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"state","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmPurchase","outputs":[],"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[],"name":"Aborted","type":"event"},{"anonymous":false,"inputs":[],"name":"PurchaseConfirmed","type":"event"},{"anonymous":false,"inputs":[],"name":"ItemReceived","type":"event"},{"anonymous":false,"inputs":[],"name":"Refunded","type":"event"}]` |
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||||||
|
var code = common.Hex2Bytes("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") |
||||||
|
|
||||||
|
abi, err := abi.JSON(strings.NewReader(definition)) |
||||||
|
if err != nil { |
||||||
|
b.Fatal(err) |
||||||
|
} |
||||||
|
|
||||||
|
cpurchase, err := abi.Pack("confirmPurchase") |
||||||
|
if err != nil { |
||||||
|
b.Fatal(err) |
||||||
|
} |
||||||
|
creceived, err := abi.Pack("confirmReceived") |
||||||
|
if err != nil { |
||||||
|
b.Fatal(err) |
||||||
|
} |
||||||
|
refund, err := abi.Pack("refund") |
||||||
|
if err != nil { |
||||||
|
b.Fatal(err) |
||||||
|
} |
||||||
|
|
||||||
|
b.ResetTimer() |
||||||
|
for i := 0; i < b.N; i++ { |
||||||
|
for j := 0; j < 400; j++ { |
||||||
|
Execute(code, cpurchase, nil) |
||||||
|
Execute(code, creceived, nil) |
||||||
|
Execute(code, refund, nil) |
||||||
|
} |
||||||
|
} |
||||||
|
} |
||||||
Loading…
Reference in new issue