MdePkg/Include/Library/DxeServicesTableLib.h

   1 /** @file
   2   Provides a service to retrieve a pointer to the DXE Services Table.
   3   Only available to DXE module types.
   4
   5   This library does not contain any functions or macros.  It simply exports a global
   6   pointer to the DXE Services Table as defined in the Platform Initialization Driver
   7   Execution Environment Core Interface Specification.  The library constructor must
   8   initialize this global pointer to the DX Services Table, so it is available at the
   9   module's entry point.  Since there is overhead in looking up the pointer to the DXE
  10   Services Table, only those modules that actually require access to the DXE Services
  11   Table should use this library.  This will typically be DXE Drivers that require GCD
  12   or Dispatcher services.
  13
  14 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
  15 This program and the accompanying materials
  16 are licensed and made available under the terms and conditions of the BSD License
  17 which accompanies this distribution.  The full text of the license may be found at
  18 http://opensource.org/licenses/bsd-license.php
  19
  20 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  21 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  22
  23 **/
  24
  25 #ifndef __DXE_SERVICES_TABLE_LIB_H__
  26 #define __DXE_SERVICES_TABLE_LIB_H__
  27
  28 ///
  29 /// Cache copy of the DXE Services Table
  30 ///
  31 extern EFI_DXE_SERVICES  *gDS;
  32
  33 #endif
  34