fix: fix reason extration

Author: GCdePaula

src/AccessLogs.sol

@@ -169,20 +169,20 @@ library AccessLogs {
         a.currentRootHash = newRootHash;
     }
 
-    function getBytes8FromBytes32AtOffset(bytes32 source, uint64 offset)
+    function getBytes8FromBytes32AtOffset(bytes32 source, uint64 offsetInBytes)
         internal
         pure
         returns (bytes8)
     {
-        return bytes8(source << (offset << Memory.LOG2_WORD));
+        return bytes8(source << (offsetInBytes << Memory.LOG2_WORD));
     }
 
     function setBytes8ToBytes32AtOffset(
         bytes8 word,
         bytes32 leaf,
-        uint64 offset
+        uint64 offsetInBytes
     ) internal pure returns (bytes32) {
-        uint256 wordOffset = offset << Memory.LOG2_WORD;
+        uint256 wordOffset = offsetInBytes << Memory.LOG2_WORD;
         bytes32 toWrite = bytes32(word) >> wordOffset;
 
         bytes32 wordMask = bytes32(~bytes8(0));

src/AdvanceStatus.sol

@@ -39,6 +39,8 @@ library AdvanceStatus {
     } cmt_io_yield_t;
     */
 
+    error InvalidReason(uint16 reason);
+
     function advanceStatus(AccessLogs.Context memory a)
         internal
         pure
@@ -55,7 +57,7 @@ library AdvanceStatus {
 
         uint64 tohost =
             EmulatorCompat.readWord(a, EmulatorConstants.HTIF_TOHOST_ADDRESS);
-        uint16 reason = uint16((tohost >> 16) & ((1 << 16) - 1));
+        uint16 reason = uint16(tohost >> 32);
 
         if (reason == EmulatorConstants.CMIO_YIELD_MANUAL_REASON_RX_ACCEPTED) {
             return Status.ACCEPTED;
@@ -68,7 +70,7 @@ library AdvanceStatus {
         ) {
             return Status.EXCEPTION;
         } else {
-            revert("Invalid reason");
+            revert InvalidReason(reason);
         }
     }
 }