From 878ddf1fc3540a715f63594ed22b6929e881afb4 Mon Sep 17 00:00:00 2001 From: bbahnsen Date: Fri, 21 Apr 2006 22:54:32 +0000 Subject: Initial import. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524 --- MdePkg/Library/BaseLib/SwapBytes32.c | 39 ++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 MdePkg/Library/BaseLib/SwapBytes32.c (limited to 'MdePkg/Library/BaseLib/SwapBytes32.c') 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
+ 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))) + ); +} -- cgit v1.2.3