1. Added Non-existing.c in BaseLib to assert no invocations of SwitchStack() on IPF.

2. Added SwitchIplStacks() function to DxeIplPeim to encapsulate arch details on stack switching.
3. Added PeiSwitchStacks() function to PeiMain to encapsulate arch details on stack switching.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1328 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Core/Pei/Dispatcher/Dispatcher.c

@@ -208,12 +208,13 @@ Returns:
                 //in order to provide buffer protection against possible illegal stack
                 //access that might corrupt the stack.
                 //
-                SwitchStack (
+                PeiSwitchStacks (
                   (SWITCH_STACK_ENTRY_POINT)(UINTN)TempPtr.Raw,
                   PeiStartupDescriptor,
                   (VOID*)PrivateDataInMem,
-                  (VOID*)((UINTN)PrivateData->StackBase + (UINTN)PrivateData->StackSize)
-                );
+                  (VOID*)((UINTN)PrivateData->StackBase + (UINTN)PrivateData->StackSize),
+                  (VOID*)(UINTN)PrivateData->StackBase
+                  );
               }
             }
           }
@@ -345,7 +346,7 @@ Returns:
       DebugFoundPeimPoint++;
       DebugNotDispatchedBitmap >>= 1;
     }
-  
+
   DEBUG_CODE_END ();
 
   return EFI_NOT_FOUND;