Implemented LOG. Closes #159

ethchain/state_transition.go

@@ -237,6 +237,12 @@ func (self *StateTransition) TransitionState() (err error) {
 			}
 
 			msg.Output = ret
+		} else {
+			// Add default LOG
+			// PUSH1 1 CALLER ADD LOG1
+			addr := ethutil.BigD(sender.Address())
+			addr.Add(addr, ethutil.Big1)
+			tx.addLog(vm.Log{sender.Address(), []*big.Int{addr}, nil})
 		}
 	}
 

ethchain/transaction.go

@@ -8,6 +8,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethcrypto"
 	"github.com/ethereum/go-ethereum/ethstate"
 	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/vm"
 	"github.com/obscuren/secp256k1-go"
 )
 
@@ -28,6 +29,8 @@ type Transaction struct {
 	v         byte
 	r, s      []byte
 
+	logs []vm.Log
+
 	// Indicates whether this tx is a contract creation transaction
 	contractCreation bool
 }
@@ -54,6 +57,10 @@ func NewTransactionFromValue(val *ethutil.Value) *Transaction {
 	return tx
 }
 
+func (self *Transaction) addLog(log vm.Log) {
+	self.logs = append(self.logs, log)
+}
+
 func (self *Transaction) GasValue() *big.Int {
 	return new(big.Int).Mul(self.Gas, self.GasPrice)
 }

ethchain/types.go

@@ -18,7 +18,7 @@ const (
 	MOD  = 0x06
 	SMOD = 0x07
 	EXP  = 0x08
-	NEG  = 0x09
+	BNOT = 0x09
 	LT   = 0x0a
 	GT   = 0x0b
 	SLT  = 0x0c
@@ -166,7 +166,7 @@ var opCodeToString = map[OpCode]string{
 	MOD:  "MOD",
 	SMOD: "SMOD",
 	EXP:  "EXP",
-	NEG:  "NEG",
+	BNOT: "BNOT",
 	LT:   "LT",
 	GT:   "GT",
 	SLT:  "SLT",

ethchain/vm_env.go

@@ -31,6 +31,9 @@ func (self *VMEnv) BlockHash() []byte      { return self.block.Hash() }
 func (self *VMEnv) Value() *big.Int        { return self.tx.Value }
 func (self *VMEnv) State() *ethstate.State { return self.state }
 func (self *VMEnv) GasLimit() *big.Int     { return self.block.GasLimit }
+func (self *VMEnv) AddLog(log vm.Log) {
+	self.tx.addLog(log)
+}
 func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
 	return vm.Transfer(from, to, amount)
 }