| /** @file | |
| Implementation of 64-bit swap bytes | |
| Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| /** | |
| Switches the endianess of a 64-bit integer. | |
| This function swaps the bytes in a 64-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 64-bit unsigned value. | |
| @return The byte swaped Operand. | |
| **/ | |
| UINT64 | |
| EFIAPI | |
| InternalMathSwapBytes64 ( | |
| IN UINT64 Operand | |
| ) | |
| { | |
| _asm { | |
| mov eax, dword ptr [Operand + 4] | |
| mov edx, dword ptr [Operand + 0] | |
| bswap eax | |
| bswap edx | |
| } | |
| } |