MdePkg/Library/BaseLib/x86ReadIdtr.c

   1 /** @file
   2   IA-32/x64 AsmReadIdtr()
   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:  x86ReadIdtr.c
  14
  15 **/
  16
  17 #include "BaseLibInternals.h"
  18
  19 /**
  20   Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.
  21
  22   Reads and returns the current IDTR descriptor and returns it in Idtr. This
  23   function is only available on IA-32 and X64.
  24
  25   If Idtr is NULL, then ASSERT().
  26
  27   @param  Idtr  Pointer to a IDTR descriptor.
  28
  29 **/
  30 VOID
  31 EFIAPI
  32 AsmReadIdtr (
  33   OUT     IA32_DESCRIPTOR           *Idtr
  34   )
  35 {
  36   ASSERT (Idtr != NULL);
  37   InternalX86ReadIdtr (Idtr);
  38 }