MdePkg/Library/BaseLib/X86ReadGdtr.c

   1 /** @file
   2   IA-32/x64 AsmReadGdtr()
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   5   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 #include "BaseLibInternals.h"
  19
  20 /**
  21   Reads the current Global Descriptor Table Register(GDTR) descriptor.
  22
  23   Reads and returns the current GDTR descriptor and returns it in Gdtr. This
  24   function is only available on IA-32 and x64.
  25
  26   If Gdtr is NULL, then ASSERT().
  27
  28   @param  Gdtr  The pointer to a GDTR descriptor.
  29
  30 **/
  31 VOID
  32 EFIAPI
  33 AsmReadGdtr (
  34   OUT     IA32_DESCRIPTOR           *Gdtr
  35   )
  36 {
  37   ASSERT (Gdtr != NULL);
  38   InternalX86ReadGdtr (Gdtr);
  39 }