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

Change-Id: I4823056d83652ecc7d3e391e905d480d73fab718
diff --git a/src/runtime_support.h b/src/runtime_support.h
new file mode 100644
index 0000000..02b176b
--- /dev/null
+++ b/src/runtime_support.h
@@ -0,0 +1,12 @@
+// Copyright 2011 Google Inc. All Rights Reserved.
+
+#ifndef ART_SRC_RUNTIME_SUPPORT_H_
+#define ART_SRC_RUNTIME_SUPPORT_H_
+
+#if defined(__arm__)
+  extern "C" uint64_t art_shl_long(uint64_t, uint32_t);
+  extern "C" uint64_t art_shr_long(uint64_t, uint32_t);
+  extern "C" uint64_t art_ushr_long(uint64_t, uint32_t);
+#endif
+
+#endif  // ART_SRC_RUNTIME_SUPPORT_H_