Add InOsEmuPkg. Like UnixPkg and Nt32Pkg, but EFI code can be common and does not...

[mirror_edk2.git] / InOsEmuPkg / Library / PeiServicesTablePointerLib / PeiServicesTablePointer.c

diff --git a/InOsEmuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c b/InOsEmuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
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+++ b/InOsEmuPkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c
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+/** @file\r
+  PEI Services Table Pointer Library.\r
+  \r
+  This library is used for PEIM which does executed from flash device directly but\r
+  executed in memory.\r
+\r
+  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+  Portiions copyrigth (c) 2011, Apple Inc. All rights reserved. \r
+  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
+#include <PiPei.h>\r
+#include <Library/PeiServicesTablePointerLib.h>\r
+#include <Library/DebugLib.h>\r
+\r
+#include <Ppi/EmuPeiServicesTableUpdate.h>\r
+\r
+\r
+CONST EFI_PEI_SERVICES  **gPeiServices = NULL;\r
+\r
+/**\r
+  Caches a pointer PEI Services Table. \r
+ \r
+  Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer \r
+  in a CPU specific manner as specified in the CPU binding section of the Platform Initialization \r
+  Pre-EFI Initialization Core Interface Specification. \r
+  \r
+  If PeiServicesTablePointer is NULL, then ASSERT().\r
+  \r
+  @param    PeiServicesTablePointer   The address of PeiServices pointer.\r
+**/\r
+VOID\r
+EFIAPI\r
+SetPeiServicesTablePointer (\r
+  IN CONST EFI_PEI_SERVICES ** PeiServicesTablePointer\r
+  )\r
+{\r
+  ASSERT (PeiServicesTablePointer != NULL);\r
+  ASSERT (*PeiServicesTablePointer != NULL);\r
+  gPeiServices = PeiServicesTablePointer;\r
+}\r
+\r
+/**\r
+  Retrieves the cached value of the PEI Services Table pointer.\r
+\r
+  Returns the cached value of the PEI Services Table pointer in a CPU specific manner \r
+  as specified in the CPU binding section of the Platform Initialization Pre-EFI \r
+  Initialization Core Interface Specification.\r
+  \r
+  If the cached PEI Services Table pointer is NULL, then ASSERT().\r
+\r
+  @return  The pointer to PeiServices.\r
+\r
+**/\r
+CONST EFI_PEI_SERVICES **\r
+EFIAPI\r
+GetPeiServicesTablePointer (\r
+  VOID\r
+  )\r
+{\r
+  ASSERT (gPeiServices != NULL);\r
+  ASSERT (*gPeiServices != NULL);\r
+  return gPeiServices;\r
+}\r
+\r
+\r
+\r
+/**\r
+  Notification service to be called when gEmuThunkPpiGuid is installed.\r
+\r
+  @param  PeiServices                 Indirect reference to the PEI Services Table.\r
+  @param  NotifyDescriptor          Address of the notification descriptor data structure. Type\r
+          EFI_PEI_NOTIFY_DESCRIPTOR is defined above.\r
+  @param  Ppi                             Address of the PPI that was installed.\r
+\r
+  @retval   EFI_STATUS                This function will install a PPI to PPI database. The status\r
+                                                  code will be the code for (*PeiServices)->InstallPpi.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+PeiServicesTablePointerNotifyCallback (\r
+  IN EFI_PEI_SERVICES              **PeiServices,\r
+  IN EFI_PEI_NOTIFY_DESCRIPTOR     *NotifyDescriptor,\r
+  IN VOID                          *Ppi\r
+  )\r
+{\r
+  gPeiServices = (CONST EFI_PEI_SERVICES  **)PeiServices;\r
+\r
+  return EFI_SUCCESS;\r
+}\r
+\r
+\r
+EFI_PEI_NOTIFY_DESCRIPTOR mNotifyOnThunkList = {\r
+  (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
+  &gEmuPeiServicesTableUpdatePpiGuid,\r
+  PeiServicesTablePointerNotifyCallback \r
+};\r
+\r
+\r
+/**\r
+  Constructor register notification on when PPI updates. If PPI is \r
+  alreay installed registering the notify will cause the handle to \r
+  run.\r
+\r
+  @param  FileHandle   The handle of FFS header the loaded driver.\r
+  @param  PeiServices  The pointer to the PEI services.\r
+\r
+  @retval EFI_SUCCESS  The constructor always returns EFI_SUCCESS.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+PeiServicesTablePointerLibConstructor (\r
+  IN EFI_PEI_FILE_HANDLE        FileHandle,\r
+  IN CONST EFI_PEI_SERVICES     **PeiServices\r
+  )\r
+{\r
+  EFI_STATUS              Status;\r
+\r
+  // register to be told when PeiServices pointer is updated\r
+  Status = (*PeiServices)->NotifyPpi (PeiServices, &mNotifyOnThunkList);\r
+  ASSERT_EFI_ERROR (Status);\r
+  return Status;\r
+}\r
+\r
+\r