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e1f414b6 1/** @file\r
2 AsmWriteIdtr function\r
3\r
bb817c56 4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
9344f092 5 SPDX-License-Identifier: BSD-2-Clause-Patent\r
e1f414b6 6\r
7**/\r
8\r
47fc17d8 9#include "BaseLibInternals.h"\r
e1f414b6 10\r
42eedea9 11/**\r
12 Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.\r
13\r
14 Writes the current IDTR descriptor and returns it in Idtr. This function is\r
030cd1a2 15 only available on IA-32 and x64.\r
42eedea9 16\r
2fc59a00 17 @param Idtr The pointer to a IDTR descriptor.\r
42eedea9 18\r
19**/\r
e1f414b6 20VOID\r
21EFIAPI\r
22InternalX86WriteIdtr (\r
2f88bd3a 23 IN CONST IA32_DESCRIPTOR *Idtr\r
e1f414b6 24 )\r
25{\r
26 _asm {\r
27 mov eax, Idtr\r
28b5f7c0 28 pushfd\r
29 cli\r
e1f414b6 30 lidt fword ptr [eax]\r
28b5f7c0 31 popfd\r
e1f414b6 32 }\r
33}\r