MdePkg/Library/BaseLib/x86ReadGdtr.c

   1 /** @file
   2   IA-32/x64 AsmReadGdtr()
   3
   4   Copyright (c) 2006, 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   Module Name:  x86ReadGdtr.c
  14
  15 **/
  16
  17 //
  18 // Include common header file for this module.
  19 //
  20
  21
  22 #include "BaseLibInternals.h"
  23
  24 /**
  25   Reads the current Global Descriptor Table Register(GDTR) descriptor.
  26
  27   Reads and returns the current GDTR descriptor and returns it in Gdtr. This
  28   function is only available on IA-32 and X64.
  29
  30   If Gdtr is NULL, then ASSERT().
  31
  32   @param  Gdtr  Pointer to a GDTR descriptor.
  33
  34 **/
  35 VOID
  36 EFIAPI
  37 AsmReadGdtr (
  38   OUT     IA32_DESCRIPTOR           *Gdtr
  39   )
  40 {
  41   ASSERT (Gdtr != NULL);
  42   InternalX86ReadGdtr (Gdtr);
  43 }