MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointer.c

   1 /*++
   2
   3 Copyright (c) 2006 Intel Corporation. All rights reserved
   4 This software and associated documentation (if any) is furnished
   5 under a license and may only be used or copied in accordance
   6 with the terms of the license. Except as permitted by such
   7 license, no part of this software or documentation may be
   8 reproduced, stored in a retrieval system, or transmitted in any
   9 form or by any means without the express written consent of
  10 Intel Corporation.
  11
  12
  13 Module Name:
  14
  15   PeiServicesTablePointer.c
  16
  17 Abstract:
  18
  19   PEI Services Table Pointer Library.
  20
  21 --*/
  22
  23 #include "InternalPeiServicesTablePointer.h"
  24
  25 /**
  26
  27   The function returns the pointer to PeiServicee following
  28   PI1.0.
  29
  30   For IA32, the four-bytes field immediately prior to new IDT
  31   base addres is used to save the EFI_PEI_SERVICES**.
  32   For x64, the eight-bytes field immediately prior to new IDT
  33   base addres is used to save the EFI_PEI_SERVICES**.
  34
  35   @retval  The pointer to PeiServices.
  36
  37 **/
  38 EFI_PEI_SERVICES **
  39 EFIAPI
  40 GetPeiServicesTablePointer (
  41   VOID
  42   )
  43 {
  44   EFI_PEI_SERVICES  **PeiServices;
  45
  46   PeiServices = (EFI_PEI_SERVICES **) AsmPeiSevicesTablePointer ();
  47   ASSERT (PeiServices != NULL);
  48   return PeiServices;
  49 }
  50