Modified PeiServicesTablePointerLib.h to match the Spec, and sync the c files with it.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6991 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 15 insertions, 4 deletions

diff --git a/MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointer.c b/MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointer.c
index f2c29bdaa4..6bacb323c0 100644
--- a/MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointer.c
+++ b/MdePkg/Library/PeiServicesTablePointerLibIdt/PeiServicesTablePointer.c
@@ -22,12 +22,15 @@
 #include <Library/DebugLib.h>

 

 /**

-  The function returns the pointer to PEI services.

+  Retrieves the cached value of the PEI Services Table pointer.

 

-  The function returns the pointer to PEI services.

-  It will ASSERT() if the pointer to PEI services is NULL.

+  Returns the cached value of the PEI Services Table pointer in a CPU specific manner 

+  as specified in the CPU binding section of the Platform Initialization Pre-EFI 

+  Initialization Core Interface Specification.

+  

+  If the cached PEI Services Table pointer is NULL, then ASSERT().

 

-  @retval  The pointer to PeiServices.

+  @return  The pointer to PeiServices.

 

 **/

 CONST EFI_PEI_SERVICES **

@@ -46,9 +49,16 @@ GetPeiServicesTablePointer (
 }

 

 /**

+  Caches a pointer PEI Services Table. 

+ 

+  Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer 

+  in a CPU specific manner as specified in the CPU binding section of the Platform Initialization 

+  Pre-EFI Initialization Core Interface Specification. 

   The function set the pointer of PEI services immediately preceding the IDT table

   according to PI specification.

   

+  If PeiServicesTablePointer is NULL, then ASSERT().

+  

   @param    PeiServicesTablePointer   The address of PeiServices pointer.

 **/

 VOID

@@ -59,6 +69,7 @@ SetPeiServicesTablePointer (
 {

   IA32_DESCRIPTOR   Idtr;

   

+  ASSERT (PeiServicesTablePointer != NULL);

   AsmReadIdtr (&Idtr);

   (*(UINTN*)(Idtr.Base - sizeof (UINTN))) = (UINTN)PeiServicesTablePointer;

 }