Added support for 64-bit shifts, fix const-wide

Change-Id: I4823056d83652ecc7d3e391e905d480d73fab718
diff --git a/src/thread.h b/src/thread.h
index bb97d4e..68b6cbf 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -170,6 +170,9 @@
 
   // Runtime support function pointers
   void* (*pMemcpy)(void*, const void*, size_t);
+  uint64_t (*pShlLong)(uint64_t, uint32_t);
+  uint64_t (*pShrLong)(uint64_t, uint32_t);
+  uint64_t (*pUshrLong)(uint64_t, uint32_t);
   float (*pI2f)(int);
   int (*pF2iz)(float);
   float (*pD2f)(double);