1 files changed, 36 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/RRotU64.c b/roms/edk2/MdePkg/Library/BaseLib/RRotU64.c
new file mode 100644
index 000000000..e07ffd656
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/RRotU64.c
@@ -0,0 +1,36 @@
+/** @file
+  Math worker functions.
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "BaseLibInternals.h"
+
+/**
+  Rotates a 64-bit integer right between 0 and 63 bits, filling the high bits
+  with the high low bits that were rotated.
+
+  This function rotates the 64-bit value Operand to the right by Count bits.
+  The high Count bits are fill with the low Count bits of Operand. The rotated
+  value is returned.
+
+  If Count is greater than 63, then ASSERT().
+
+  @param  Operand The 64-bit operand to rotate right.
+  @param  Count   The number of bits to rotate right.
+
+  @return Operand >> Count.
+
+**/
+UINT64
+EFIAPI
+RRotU64 (
+  IN      UINT64                    Operand,
+  IN      UINTN                     Count
+  )
+{
+  ASSERT (Count < 64);
+  return InternalMathRRotU64 (Operand, Count);
+}