Call fixed

ethchain/closure.go

@@ -52,6 +52,10 @@ func (c *Closure) Get(x *big.Int) *ethutil.Value {
 }
 
 func (c *Closure) Gets(x, y *big.Int) *ethutil.Value {
+	if x.Int64() > int64(len(c.Script)) || y.Int64() > int64(len(c.Script)) {
+		return ethutil.NewValue(0)
+	}
+
 	partial := c.Script[x.Int64() : x.Int64()+y.Int64()]
 
 	return ethutil.NewValue(partial)

ethchain/contract.go

@@ -70,7 +70,7 @@ func (c *Contract) Address() []byte {
 }
 
 func (c *Contract) RlpEncode() []byte {
-	return ethutil.Encode([]interface{}{c.Amount, c.Nonce, c.state.trie.Root})
+	return ethutil.Encode([]interface{}{c.Amount, c.Nonce, c.state.trie.Root, c.script, c.initScript})
 }
 
 func (c *Contract) RlpDecode(data []byte) {
@@ -79,6 +79,8 @@ func (c *Contract) RlpDecode(data []byte) {
 	c.Amount = decoder.Get(0).BigInt()
 	c.Nonce = decoder.Get(1).Uint()
 	c.state = NewState(ethutil.NewTrie(ethutil.Config.Db, decoder.Get(2).Interface()))
+	c.script = decoder.Get(3).Bytes()
+	c.initScript = decoder.Get(4).Bytes()
 }
 
 func MakeContract(tx *Transaction, state *State) *Contract {

ethchain/vm.go

@@ -2,7 +2,7 @@ package ethchain
 
 import (
 	_ "bytes"
-	"fmt"
+	_ "fmt"
 	"github.com/ethereum/eth-go/ethutil"
 	_ "github.com/obscuren/secp256k1-go"
 	_ "math"
@@ -301,9 +301,14 @@ func (vm *Vm) RunClosure(closure *Closure) []byte {
 		// 0x50 range
 		case oPUSH: // Push PC+1 on to the stack
 			pc.Add(pc, ethutil.Big1)
+			//val := closure.GetMem(pc).BigInt()
+			data := closure.Gets(pc, big.NewInt(32))
+			val := ethutil.BigD(data.Bytes())
 
-			val := closure.GetMem(pc).BigInt()
+			// Push value to stack
 			stack.Push(val)
+
+			pc.Add(pc, big.NewInt(31))
 		case oPOP:
 			stack.Pop()
 		case oDUP:
@@ -343,17 +348,16 @@ func (vm *Vm) RunClosure(closure *Closure) []byte {
 			stack.Push(big.NewInt(int64(mem.Len())))
 		// 0x60 range
 		case oCALL:
-			// Pop return size and offset
-			retSize, retOffset := stack.Popn()
+			// Closure addr
+			addr := stack.Pop()
+			// Pop gas and value of the stack.
+			gas, value := stack.Popn()
 			// Pop input size and offset
 			inSize, inOffset := stack.Popn()
-			fmt.Println(inSize, inOffset)
+			// Pop return size and offset
+			retSize, retOffset := stack.Popn()
 			// Get the arguments from the memory
 			args := mem.Get(inOffset.Int64(), inSize.Int64())
-			// Pop gas and value of the stack.
-			gas, value := stack.Popn()
-			// Closure addr
-			addr := stack.Pop()
 			// Fetch the contract which will serve as the closure body
 			contract := vm.state.GetContract(addr.Bytes())
 			// Create a new callable closure
@@ -385,7 +389,9 @@ func (vm *Vm) RunClosure(closure *Closure) []byte {
 				break out
 			*/
 		default:
-			ethutil.Config.Log.Debugln("Invalid opcode", op)
+			ethutil.Config.Log.Debugf("Invalid opcode %x\n", op)
+
+			return closure.Return(nil)
 		}
 
 		pc.Add(pc, ethutil.Big1)

ethchain/vm_test.go

@@ -83,6 +83,21 @@ func TestRun4(t *testing.T) {
 	state := NewState(ethutil.NewTrie(db, ""))
 
 	asm, err := mutan.Compile(strings.NewReader(`
+		int32 a = 10
+		int32 b = 20
+		if a > b {
+			int32 c = this.caller()
+		}
+		exit()
+	`), false)
+	script := ethutil.Assemble(asm...)
+	tx := NewContractCreationTx(ethutil.Big("0"), ethutil.Big("1000"), script)
+	addr := tx.Hash()[12:]
+	contract := MakeContract(tx, state)
+	state.UpdateContract(contract)
+	fmt.Printf("%x\n", addr)
+
+	asm, err = mutan.Compile(strings.NewReader(`
 		int32 a = 10
 		int32 b = 10
 		if a == b {
@@ -97,9 +112,9 @@ func TestRun4(t *testing.T) {
 		store[a] = 20
 		store[b] = this.caller()
 
-		int8[10] ret
-		int8[10] arg
-		call(1234, 0, 100000000, arg, ret)
+		int8 ret = 0
+		int8 arg = 10
+		call(938726394128221156290138488023434115948430767407, 0, 100000000, arg, ret)
 	`), false)
 	if err != nil {
 		fmt.Println(err)
@@ -113,6 +128,8 @@ func TestRun4(t *testing.T) {
 	// Contract addr as test address
 	account := NewAccount(ContractAddr, big.NewInt(10000000))
 	c := MakeContract(callerTx, state)
+	//fmt.Println(c.script[230:240])
+	//fmt.Println(c.script)
 	callerClosure := NewClosure(account, c, c.script, state, big.NewInt(1000000000), new(big.Int))
 
 	vm := NewVm(state, RuntimeVars{

ethutil/parsing.go

@@ -1,8 +1,8 @@
 package ethutil
 
 import (
+	_ "fmt"
 	"math/big"
-	"strconv"
 )
 
 // Op codes
@@ -98,11 +98,16 @@ func CompileInstr(s interface{}) ([]byte, error) {
 		// Assume regular bytes during compilation
 		if !success {
 			num.SetBytes([]byte(str))
+		} else {
+			// tmp fix for 32 bytes
+			n := BigToBytes(num, 256)
+			return n, nil
 		}
 
 		return num.Bytes(), nil
 	case int:
-		return big.NewInt(int64(s.(int))).Bytes(), nil
+		num := BigToBytes(big.NewInt(int64(s.(int))), 256)
+		return num, nil
 	case []byte:
 		return BigD(s.([]byte)).Bytes(), nil
 	}
@@ -110,25 +115,6 @@ func CompileInstr(s interface{}) ([]byte, error) {
 	return nil, nil
 }
 
-func Instr(instr string) (int, []string, error) {
-
-	base := new(big.Int)
-	base.SetString(instr, 0)
-
-	args := make([]string, 7)
-	for i := 0; i < 7; i++ {
-		// int(int(val) / int(math.Pow(256,float64(i)))) % 256
-		exp := BigPow(256, i)
-		num := new(big.Int)
-		num.Div(base, exp)
-
-		args[i] = num.Mod(num, big.NewInt(256)).String()
-	}
-	op, _ := strconv.Atoi(args[0])
-
-	return op, args[1:7], nil
-}
-
 // Script compilation functions
 // Compiles strings to machine code
 func Assemble(instructions ...interface{}) (script []byte) {