profile minigeth...no real hot spots

contracts/MIPS.sol

@@ -73,7 +73,6 @@ contract MIPS {
     return uint32(dat&mask | (isSigned ? signed : 0));
   }
 
-
   function handleSyscall(bytes32 stateHash) internal returns (bytes32) {
     uint32 syscall_no = ReadMemory(stateHash, REG_OFFSET+2*4);
     uint32 v0 = 0;
@@ -215,7 +214,7 @@ contract MIPS {
     if (opcode == 0 && func >= 8 && func < 0x1c) {
       if (func == 8 || func == 9) {
         // jr/jalr
-        return branchDelay(stateHash, nextPC, val | (func == 9 ? PC_FLAG : 0));
+        return branchDelay(stateHash, nextPC, rs | (func == 9 ? PC_FLAG : 0));
       }
 
       // handle movz and movn when they don't write back

minigeth/main.go

@@ -5,6 +5,7 @@ import (
 	"log"
 	"math/big"
 	"os"
+	"runtime/pprof"
 	"strconv"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -27,8 +28,14 @@ func check(err error) {
 }
 
 func main() {
-	// init secp256k1BytePoints
-	crypto.S256()
+	if len(os.Args) > 2 {
+		f, err := os.Create(os.Args[2])
+		if err != nil {
+			log.Fatal(err)
+		}
+		pprof.StartCPUProfile(f)
+		defer pprof.StopCPUProfile()
+	}
 
 	// non mips
 	if len(os.Args) > 1 {
@@ -43,6 +50,9 @@ func main() {
 		fmt.Println("commited transactions", hash, err)
 	}
 
+	// init secp256k1BytePoints
+	crypto.S256()
+
 	// read start block header
 	var parent types.Header
 	check(rlp.DecodeBytes(oracle.Preimage(oracle.Input(0)), &parent))