this should fix CI

minigeth/oracle/embedded_mips.go

@@ -8,12 +8,47 @@ import (
 	"io/ioutil"
 	"math/big"
 	"os"
+	"strconv"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
 )
 
 var preimages = make(map[common.Hash][]byte)
+var inputs [6]common.Hash
+var inputsLoaded bool = false
+
+func Input(index int) common.Hash {
+	if index < 0 || index > 5 {
+		panic("bad input index")
+	}
+	if !inputsLoaded {
+		blockNumber, _ := strconv.Atoi(os.Args[1])
+		f, err := os.Open(fmt.Sprintf("/tmp/eth/%d", blockNumber))
+		if err != nil {
+			panic("missing inputs")
+		}
+		defer f.Close()
+		ret, err := ioutil.ReadAll(f)
+
+		for i := 0; i < len(inputs); i++ {
+			inputs[i] = common.BytesToHash(ret[i*0x20 : i*0x20+0x20])
+		}
+
+		inputsLoaded = true
+	}
+	return inputs[index]
+}
+
+func Output(output common.Hash) {
+	if output == inputs[5] {
+		fmt.Println("good transition")
+	} else {
+		fmt.Println(output, "!=", inputs[5])
+		panic("BAD transition :((")
+	}
+}
 
 func Preimage(hash common.Hash) []byte {
 	val, ok := preimages[hash]

minigeth/oracle/prefetch.go

@@ -159,18 +159,20 @@ func PrefetchCode(blockNumber *big.Int, addrHash common.Hash) {
 	preimages[hash] = ret
 }
 
-var inputs [5]common.Hash
-var realoutput common.Hash
+var inputs [6]common.Hash
 
 func Input(index int) common.Hash {
+	if index < 0 || index > 5 {
+		panic("bad input index")
+	}
 	return inputs[index]
 }
 
 func Output(output common.Hash) {
-	if output == realoutput {
+	if output == inputs[5] {
 		fmt.Println("good transition")
 	} else {
-		fmt.Println(output, "!=", realoutput)
+		fmt.Println(output, "!=", inputs[5])
 		panic("BAD transition :((")
 	}
 }
@@ -211,7 +213,17 @@ func PrefetchBlock(blockNumber *big.Int, startBlock bool, hasher types.TrieHashe
 	inputs[2] = blockHeader.Coinbase.Hash()
 	inputs[3] = blockHeader.UncleHash
 	inputs[4] = common.BigToHash(big.NewInt(int64(blockHeader.GasLimit)))
-	realoutput = blockHeader.Root
+
+	// secret input
+	inputs[5] = blockHeader.Root
+
+	// save the inputs
+	saveinput := make([]byte, 0)
+	for i := 0; i < len(inputs); i++ {
+		saveinput = append(saveinput, inputs[i].Bytes()[:]...)
+	}
+	key := fmt.Sprintf("/tmp/eth/%d", blockNumber.Uint64()-1)
+	ioutil.WriteFile(key, saveinput, 0644)
 
 	txs := make([]*types.Transaction, len(jr.Result.Transactions))
 	for i := 0; i < len(jr.Result.Transactions); i++ {

risc/run.py

@@ -286,7 +286,7 @@ mu.mem_write(SIZE-0x2000, struct.pack(">IIIIIIIII",
   _AT_PAGESZ, 0x1000, 0)) # auxv
 
 # block
-mu.mem_write(SIZE-0x800, b"13284491\x00")
+mu.mem_write(SIZE-0x800, b"13284469\x00")
 #mu.mem_write(SIZE-0x800, b"13284469\x00")
 
 mu.mem_write(SIZE-0x400, b"GOGC=off\x00")