1 files changed, 39 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/SwapBytes32.c b/MdePkg/Library/BaseLib/SwapBytes32.c
new file mode 100644
index 0000000000..4e683b09d1
--- /dev/null
+++ b/MdePkg/Library/BaseLib/SwapBytes32.c
@@ -0,0 +1,39 @@
+/** @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 "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
+  )
+{
+  return (UINT32)(
+           ((UINT32)SwapBytes16 ((UINT16)Operand) << 16) |
+           ((UINT32)SwapBytes16 ((UINT16)(Operand >> 16)))
+           );
+}