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e1f414b6 1/** @file\r
2 AsmReadIdtr function\r
3\r
4 Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
5 All rights reserved. This program and the accompanying materials\r
6 are licensed and made available under the terms and conditions of the BSD License\r
7 which accompanies this distribution. The full text of the license may be found at\r
8 http://opensource.org/licenses/bsd-license.php\r
9\r
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13**/\r
14\r
15//\r
16// Include common header file for this module.\r
17//\r
f734a10a
A
18#include <BaseLibInternals.h>\r
19\r
e1f414b6 20\r
42eedea9 21/**\r
22 Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.\r
23\r
24 Reads and returns the current IDTR descriptor and returns it in Idtr. This\r
25 function is only available on IA-32 and X64.\r
26\r
27 @param Idtr Pointer to a IDTR descriptor.\r
28\r
29**/\r
e1f414b6 30VOID\r
31EFIAPI\r
32InternalX86ReadIdtr (\r
33 OUT IA32_DESCRIPTOR *Idtr\r
34 )\r
35{\r
36 _asm {\r
37 mov eax, Idtr\r
38 sidt fword ptr [eax]\r
39 }\r
40}\r