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Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/SwapBytes32.c')
-rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/SwapBytes32.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/SwapBytes32.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/SwapBytes32.c new file mode 100644 index 0000000..1b5b129 --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/SwapBytes32.c @@ -0,0 +1,47 @@ +/*++ + +Copyright (c) 2004 - 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. + + +Module Name: + + SwapBytes32.c + +Abstract: + + Math worker functions. + +--*/ + +#include "BaseLibInternal.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))) + ); +} |