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[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / ReadLdtr.c

/** @file\r
  AsmReadLdtr function\r
\r
  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
//\r
// Include common header file for this module.\r
//\r
\r
\r
/**\r
  Reads the current Local Descriptor Table Register(LDTR) selector.\r
\r
  Reads and returns the current 16-bit LDTR descriptor value. This function is\r
  only available on IA-32 and X64.\r
\r
  @return The current selector of LDT.\r
\r
**/\r
UINT16\r
EFIAPI\r
AsmReadLdtr (\r
  VOID\r
  )\r
{\r
  _asm {\r
    sldt    ax\r
  }\r
}\r
\r