EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/X86ReadGdtr.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12
  13 Module Name:
  14
  15   x86ReadGdtr.c
  16
  17 Abstract:
  18
  19   IA-32/x64 specific functions.
  20
  21 --*/
  22
  23 #include "BaseLibInternals.h"
  24
  25 /**
  26   Reads the current Global Descriptor Table Register(GDTR) descriptor.
  27
  28   Reads and returns the current GDTR descriptor and returns it in Gdtr. This
  29   function is only available on IA-32 and X64.
  30
  31   If Gdtr is NULL, then ASSERT().
  32
  33   @param  Gdtr  Pointer to a GDTR descriptor.
  34
  35 **/
  36 VOID
  37 EFIAPI
  38 AsmReadGdtr (
  39   OUT     IA32_DESCRIPTOR           *Gdtr
  40   )
  41 {
  42   ASSERT (Gdtr != NULL);
  43   InternalX86ReadGdtr (Gdtr);
  44 }