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authorJeffrey Wilcke <geffobscura@gmail.com>2015-08-30 16:19:10 +0800
committerJeffrey Wilcke <geffobscura@gmail.com>2015-10-04 07:13:54 +0800
commit361082ec4b942aea7c01fcb1be1782cb68b6fe3a (patch)
treed3ed9276cc61d314a6de14de1a61ea2c2d9a70b2 /cmd/evm
parentf7a71996fbbe9cea4445600ffa3c232a6cf42803 (diff)
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cmd/evm, core/vm, test: refactored VM and core
* Moved `vm.Transfer` to `core` package and changed execution to call `env.Transfer` instead of `core.Transfer` directly. * core/vm: byte code VM moved to jump table instead of switch * Moved `vm.Transfer` to `core` package and changed execution to call `env.Transfer` instead of `core.Transfer` directly. * Byte code VM now shares the same code as the JITVM * Renamed Context to Contract * Changed initialiser of state transition & unexported methods * Removed the Execution object and refactor `Call`, `CallCode` & `Create` in to their own functions instead of being methods. * Removed the hard dep on the state for the VM. The VM now depends on a Database interface returned by the environment. In the process the core now depends less on the statedb by usage of the env * Moved `Log` from package `core/state` to package `core/vm`.
Diffstat (limited to 'cmd/evm')
-rw-r--r--cmd/evm/main.go64
1 files changed, 31 insertions, 33 deletions
diff --git a/cmd/evm/main.go b/cmd/evm/main.go
index 243dd6266..bf24da982 100644
--- a/cmd/evm/main.go
+++ b/cmd/evm/main.go
@@ -80,12 +80,17 @@ var (
Name: "sysstat",
Usage: "display system stats",
}
+ VerbosityFlag = cli.IntFlag{
+ Name: "verbosity",
+ Usage: "sets the verbosity level",
+ }
)
func init() {
app = utils.NewApp("0.2", "the evm command line interface")
app.Flags = []cli.Flag{
DebugFlag,
+ VerbosityFlag,
ForceJitFlag,
DisableJitFlag,
SysStatFlag,
@@ -105,6 +110,7 @@ func run(ctx *cli.Context) {
vm.EnableJit = !ctx.GlobalBool(DisableJitFlag.Name)
glog.SetToStderr(true)
+ glog.SetV(ctx.GlobalInt(VerbosityFlag.Name))
db, _ := ethdb.NewMemDatabase()
statedb := state.New(common.Hash{}, db)
@@ -179,18 +185,20 @@ func NewEnv(state *state.StateDB, transactor common.Address, value *big.Int) *VM
}
}
-func (self *VMEnv) State() *state.StateDB { return self.state }
-func (self *VMEnv) Origin() common.Address { return *self.transactor }
-func (self *VMEnv) BlockNumber() *big.Int { return common.Big0 }
-func (self *VMEnv) Coinbase() common.Address { return *self.transactor }
-func (self *VMEnv) Time() *big.Int { return self.time }
-func (self *VMEnv) Difficulty() *big.Int { return common.Big1 }
-func (self *VMEnv) BlockHash() []byte { return make([]byte, 32) }
-func (self *VMEnv) Value() *big.Int { return self.value }
-func (self *VMEnv) GasLimit() *big.Int { return big.NewInt(1000000000) }
-func (self *VMEnv) VmType() vm.Type { return vm.StdVmTy }
-func (self *VMEnv) Depth() int { return 0 }
-func (self *VMEnv) SetDepth(i int) { self.depth = i }
+func (self *VMEnv) Db() vm.Database { return self.state }
+func (self *VMEnv) MakeSnapshot() vm.Database { return self.state.Copy() }
+func (self *VMEnv) SetSnapshot(db vm.Database) { self.state.Set(db.(*state.StateDB)) }
+func (self *VMEnv) Origin() common.Address { return *self.transactor }
+func (self *VMEnv) BlockNumber() *big.Int { return common.Big0 }
+func (self *VMEnv) Coinbase() common.Address { return *self.transactor }
+func (self *VMEnv) Time() *big.Int { return self.time }
+func (self *VMEnv) Difficulty() *big.Int { return common.Big1 }
+func (self *VMEnv) BlockHash() []byte { return make([]byte, 32) }
+func (self *VMEnv) Value() *big.Int { return self.value }
+func (self *VMEnv) GasLimit() *big.Int { return big.NewInt(1000000000) }
+func (self *VMEnv) VmType() vm.Type { return vm.StdVmTy }
+func (self *VMEnv) Depth() int { return 0 }
+func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) GetHash(n uint64) common.Hash {
if self.block.Number().Cmp(big.NewInt(int64(n))) == 0 {
return self.block.Hash()
@@ -203,34 +211,24 @@ func (self *VMEnv) AddStructLog(log vm.StructLog) {
func (self *VMEnv) StructLogs() []vm.StructLog {
return self.logs
}
-func (self *VMEnv) AddLog(log *state.Log) {
+func (self *VMEnv) AddLog(log *vm.Log) {
self.state.AddLog(log)
}
-func (self *VMEnv) CanTransfer(from vm.Account, balance *big.Int) bool {
- return from.Balance().Cmp(balance) >= 0
+func (self *VMEnv) CanTransfer(from common.Address, balance *big.Int) bool {
+ return self.state.GetBalance(from).Cmp(balance) >= 0
}
func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
- return vm.Transfer(from, to, amount)
-}
-
-func (self *VMEnv) vm(addr *common.Address, data []byte, gas, price, value *big.Int) *core.Execution {
- return core.NewExecution(self, addr, data, gas, price, value)
+ return core.Transfer(from, to, amount)
}
-func (self *VMEnv) Call(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
- exe := self.vm(&addr, data, gas, price, value)
- ret, err := exe.Call(addr, caller)
- self.Gas = exe.Gas
-
- return ret, err
+func (self *VMEnv) Call(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
+ self.Gas = gas
+ return core.Call(self, caller, addr, data, gas, price, value)
}
-func (self *VMEnv) CallCode(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
- a := caller.Address()
- exe := self.vm(&a, data, gas, price, value)
- return exe.Call(addr, caller)
+func (self *VMEnv) CallCode(caller vm.ContractRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
+ return core.CallCode(self, caller, addr, data, gas, price, value)
}
-func (self *VMEnv) Create(caller vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
- exe := self.vm(nil, data, gas, price, value)
- return exe.Create(caller)
+func (self *VMEnv) Create(caller vm.ContractRef, data []byte, gas, price, value *big.Int) ([]byte, common.Address, error) {
+ return core.Create(self, caller, data, gas, price, value)
}