Optimizations

ethchain/asm.go

@@ -21,7 +21,7 @@ func Disassemble(script []byte) (asm []string) {
 		asm = append(asm, fmt.Sprintf("%v", op))
 
 		switch op {
-		case oPUSH: // Push PC+1 on to the stack
+		case oPUSH32: // Push PC+1 on to the stack
 			pc.Add(pc, ethutil.Big1)
 			data := script[pc.Int64() : pc.Int64()+32]
 			val := ethutil.BigD(data)
@@ -36,20 +36,6 @@ func Disassemble(script []byte) (asm []string) {
 			asm = append(asm, fmt.Sprintf("0x%x", b))
 
 			pc.Add(pc, big.NewInt(31))
-		case oPUSH20:
-			pc.Add(pc, ethutil.Big1)
-			data := script[pc.Int64() : pc.Int64()+20]
-			val := ethutil.BigD(data)
-			var b []byte
-			if val.Int64() == 0 {
-				b = []byte{0}
-			} else {
-				b = val.Bytes()
-			}
-
-			asm = append(asm, fmt.Sprintf("0x%x", b))
-
-			pc.Add(pc, big.NewInt(19))
 		}
 
 		pc.Add(pc, ethutil.Big1)

ethchain/types.go

@@ -48,8 +48,6 @@ const (
 	oGASLIMIT   = 0x45
 
 	// 0x50 range - 'storage' and execution
-	oPUSH    = 0x50
-	oPUSH20  = 0x80
 	oPOP     = 0x51
 	oDUP     = 0x52
 	oSWAP    = 0x53
@@ -63,14 +61,48 @@ const (
 	oPC      = 0x5b
 	oMSIZE   = 0x5c
 
-	// 0x60 range - closures
-	oCREATE = 0x60
-	oCALL   = 0x61
-	oRETURN = 0x62
+	// 0x60 range
+	oPUSH1  = 0x60
+	oPUSH2  = 0x61
+	oPUSH3  = 0x62
+	oPUSH4  = 0x63
+	oPUSH5  = 0x64
+	oPUSH6  = 0x65
+	oPUSH7  = 0x66
+	oPUSH8  = 0x67
+	oPUSH9  = 0x68
+	oPUSH10 = 0x69
+	oPUSH11 = 0x6a
+	oPUSH12 = 0x6b
+	oPUSH13 = 0x6c
+	oPUSH14 = 0x6d
+	oPUSH15 = 0x6e
+	oPUSH16 = 0x6f
+	oPUSH17 = 0x70
+	oPUSH18 = 0x71
+	oPUSH19 = 0x72
+	oPUSH20 = 0x73
+	oPUSH21 = 0x74
+	oPUSH22 = 0x75
+	oPUSH23 = 0x76
+	oPUSH24 = 0x77
+	oPUSH25 = 0x78
+	oPUSH26 = 0x79
+	oPUSH27 = 0x7a
+	oPUSH28 = 0x7b
+	oPUSH29 = 0x7c
+	oPUSH30 = 0x7d
+	oPUSH31 = 0x7e
+	oPUSH32 = 0x7f
+
+	// 0xf0 range - closures
+	oCREATE = 0xf0
+	oCALL   = 0xf2
+	oRETURN = 0xf3
 
 	// 0x70 range - other
-	oLOG     = 0x70 // XXX Unofficial
-	oSUICIDE = 0x7f
+	oLOG     = 0xfe // XXX Unofficial
+	oSUICIDE = 0xff
 )
 
 // Since the opcodes aren't all in order we can't use a regular slice
@@ -119,8 +151,6 @@ var opCodeToString = map[OpCode]string{
 	oGASLIMIT:   "GASLIMIT",
 
 	// 0x50 range - 'storage' and execution
-	oPUSH:    "PUSH",
-	oPOP:     "POP",
 	oDUP:     "DUP",
 	oSWAP:    "SWAP",
 	oMLOAD:   "MLOAD",
@@ -133,7 +163,41 @@ var opCodeToString = map[OpCode]string{
 	oPC:      "PC",
 	oMSIZE:   "MSIZE",
 
-	// 0x60 range - closures
+	// 0x60 range - push
+	oPUSH1:  "PUSH1",
+	oPUSH2:  "PUSH2",
+	oPUSH3:  "PUSH3",
+	oPUSH4:  "PUSH4",
+	oPUSH5:  "PUSH5",
+	oPUSH6:  "PUSH6",
+	oPUSH7:  "PUSH7",
+	oPUSH8:  "PUSH8",
+	oPUSH9:  "PUSH9",
+	oPUSH10: "PUSH10",
+	oPUSH11: "PUSH11",
+	oPUSH12: "PUSH12",
+	oPUSH13: "PUSH13",
+	oPUSH14: "PUSH14",
+	oPUSH15: "PUSH15",
+	oPUSH16: "PUSH16",
+	oPUSH17: "PUSH17",
+	oPUSH18: "PUSH18",
+	oPUSH19: "PUSH19",
+	oPUSH20: "PUSH20",
+	oPUSH21: "PUSH21",
+	oPUSH22: "PUSH22",
+	oPUSH23: "PUSH23",
+	oPUSH24: "PUSH24",
+	oPUSH25: "PUSH25",
+	oPUSH26: "PUSH26",
+	oPUSH27: "PUSH27",
+	oPUSH28: "PUSH28",
+	oPUSH29: "PUSH29",
+	oPUSH30: "PUSH30",
+	oPUSH31: "PUSH31",
+	oPUSH32: "PUSH32",
+
+	// 0xf0 range
 	oCREATE: "CREATE",
 	oCALL:   "CALL",
 	oRETURN: "RETURN",
@@ -193,10 +257,6 @@ var OpCodes = map[string]byte{
 	"GASLIMIT":   0x45,
 
 	// 0x50 range - 'storage' and execution
-	"PUSH": 0x50,
-
-	"PUSH20": 0x80,
-
 	"POP":     0x51,
 	"DUP":     0x52,
 	"SWAP":    0x53,
@@ -210,13 +270,47 @@ var OpCodes = map[string]byte{
 	"PC":      0x5b,
 	"MSIZE":   0x5c,
 
-	// 0x60 range - closures
-	"CREATE": 0x60,
-	"CALL":   0x61,
-	"RETURN": 0x62,
+	// 0x70 range - 'push'
+	"PUSH1":  0x60,
+	"PUSH2":  0x61,
+	"PUSH3":  0x62,
+	"PUSH4":  0x63,
+	"PUSH5":  0x64,
+	"PUSH6":  0x65,
+	"PUSH7":  0x66,
+	"PUSH8":  0x67,
+	"PUSH9":  0x68,
+	"PUSH10": 0x69,
+	"PUSH11": 0x6a,
+	"PUSH12": 0x6b,
+	"PUSH13": 0x6c,
+	"PUSH14": 0x6d,
+	"PUSH15": 0x6e,
+	"PUSH16": 0x6f,
+	"PUSH17": 0x70,
+	"PUSH18": 0x71,
+	"PUSH19": 0x72,
+	"PUSH20": 0x73,
+	"PUSH21": 0x74,
+	"PUSH22": 0x75,
+	"PUSH23": 0x76,
+	"PUSH24": 0x77,
+	"PUSH25": 0x78,
+	"PUSH26": 0x70,
+	"PUSH27": 0x7a,
+	"PUSH28": 0x7b,
+	"PUSH29": 0x7c,
+	"PUSH30": 0x7d,
+	"PUSH31": 0x7e,
+	"PUSH32": 0x7f,
+
+	// 0xf0 range - closures
+	"CREATE": 0xf0,
+	"CALL":   0xf1,
+	"RETURN": 0xf2,
 
 	// 0x70 range - other
-	"LOG":     0x70,
+	"LOG":     0xfe,
 	"SUICIDE": 0x7f,
 }
 

ethchain/vm.go

@@ -95,6 +95,8 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 		ethutil.Config.Log.Debugf("#   op\n")
 	}
 
+	fmt.Println(closure.Script)
+
 	for {
 		// The base for all big integer arithmetic
 		base := new(big.Int)
@@ -104,11 +106,9 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 		val := closure.Get(pc)
 		// Get the opcode (it must be an opcode!)
 		op := OpCode(val.Uint())
-		/*
 		if ethutil.Config.Debug {
 			ethutil.Config.Log.Debugf("%-3d %-4s", pc, op.String())
 		}
-		*/
 
 		gas := new(big.Int)
 		useGas := func(amount *big.Int) {
@@ -353,26 +353,16 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 			stack.Push(big.NewInt(0))
 
 			// 0x50 range
-		case oPUSH: // Push PC+1 on to the stack
+		case oPUSH1, oPUSH2, oPUSH3, oPUSH4, oPUSH5, oPUSH6, oPUSH7, oPUSH8, oPUSH9, oPUSH10, oPUSH11, oPUSH12, oPUSH13, oPUSH14, oPUSH15, oPUSH16, oPUSH17, oPUSH18, oPUSH19, oPUSH20, oPUSH21, oPUSH22, oPUSH23, oPUSH24, oPUSH25, oPUSH26, oPUSH27, oPUSH28, oPUSH29, oPUSH30, oPUSH31, oPUSH32:
+			a := big.NewInt(int64(op) - int64(oPUSH1) + 1)
 			pc.Add(pc, ethutil.Big1)
-			data := closure.Gets(pc, big.NewInt(32))
+			data := closure.Gets(pc, a)
 			val := ethutil.BigD(data.Bytes())
-
 			// Push value to stack
 			stack.Push(val)
-
-			pc.Add(pc, big.NewInt(31))
+			pc.Add(pc, a.Sub(a, big.NewInt(1)))
 			step++
-		case oPUSH20:
-			pc.Add(pc, ethutil.Big1)
-			data := closure.Gets(pc, big.NewInt(20))
-			val := ethutil.BigD(data.Bytes())
 
-			// Push value to stack
-			stack.Push(val)
-
-			pc.Add(pc, big.NewInt(19))
-			step++
 		case oPOP:
 			require(1)
 			stack.Pop()