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1 /** @file
2 AsmReadMm3 function
3
4 Copyright (c) 2006 - 2007, 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
9
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.
12
13 **/
14
15
16
17
18 /**
19 Reads the current value of 64-bit MMX Register #3 (MM3).
20
21 Reads and returns the current value of MM3. This function is only available
22 on IA-32 and x64.
23
24 @return The current value of MM3.
25
26 **/
27 UINT64
28 EFIAPI
29 AsmReadMm3 (
30 VOID
31 )
32 {
33 _asm {
34 push eax
35 push eax
36 movq [esp], mm3
37 pop eax
38 pop edx
39 emms
40 }
41 }
42