EmulatorPkg/Include/Library/EmuMagicPageLib.h

/*++ @file
The PCD, gEmulatorPkgTokenSpaceGuid.PcdPeiServicesTablePage, points to a magic page
of memory that is like SRAM on an embedded system. This file defines what goes
where in the magic page.

Copyright (c) 2011, Apple Inc. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#ifndef __EMU_MAGIC_PAGE_LIB_H__
#define __EMU_MAGIC_PAGE_LIB_H__

#include <PiPei.h>
#include <Library/PcdLib.h>
#include <Protocol/EmuThunk.h>

typedef struct {
  // Used by PEI Core and PEIMs to store the PEI Services pointer.
  // Privilege issues prevent using the PI mechanism in the emulator.
  CONST EFI_PEI_SERVICES **PeiServicesTablePointer;

  // Used by SecPeiServicesLib
  EFI_PEI_PPI_DESCRIPTOR  *PpiList;

  // Needed by PEI PEI PeCoffLoaderExtraActionLib
  EMU_THUNK_PROTOCOL   *Thunk;
} EMU_MAGIC_PAGE_LAYOUT;

#define EMU_MAGIC_PAGE() ((EMU_MAGIC_PAGE_LAYOUT *)((UINTN)PcdGet64 (PcdPeiServicesTablePage)))

#endif