1 files changed, 47 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/SwapBytes32.c b/MdePkg/Library/BaseLib/SwapBytes32.c
new file mode 100644
index 0000000000..1b1fe78fc2
--- /dev/null
+++ b/MdePkg/Library/BaseLib/SwapBytes32.c
@@ -0,0 +1,47 @@
+/** @file
+  Math worker functions.
+
+  Copyright (c) 2006, Intel Corporation<BR>
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+//
+// Include common header file for this module.
+//
+#include "CommonHeader.h"
+
+#include "BaseLibInternals.h"
+
+/**
+  Switches the endianess of a 32-bit integer.
+
+  This function swaps the bytes in a 32-bit unsigned value to switch the value
+  from little endian to big endian or vice versa. The byte swapped value is
+  returned.
+
+  @param  Operand A 32-bit unsigned value.
+
+  @return The byte swaped Operand.
+
+**/
+UINT32
+EFIAPI
+SwapBytes32 (
+  IN      UINT32                    Operand
+  )
+{
+  UINT32  LowerBytes;
+  UINT32  HigherBytes;
+
+  LowerBytes  = (UINT32) SwapBytes16 ((UINT16) Operand);
+  HigherBytes = (UINT32) SwapBytes16 ((UINT16) (Operand >> 16));
+
+  return (LowerBytes << 16 | HigherBytes);
+}