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git.proxmox.com Git - mirror_edk2.git/blob - MdePkg/Library/BaseLib/Ia32/SwapBytes64.c
2 Implementation of 64-bit swap bytes
4 Copyright (c) 2006 - 2008, Intel Corporation<BR>
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 Switches the endianess of a 64-bit integer.
21 This function swaps the bytes in a 64-bit unsigned value to switch the value
22 from little endian to big endian or vice versa. The byte swapped value is
25 @param Operand A 64-bit unsigned value.
27 @return The byte swaped Operand.
32 InternalMathSwapBytes64 (
37 mov eax
, dword ptr
[Operand
+ 4]
38 mov edx
, dword ptr
[Operand
+ 0]