2 files changed, 16 insertions, 17 deletions
diff --git a/MdePkg/Library/BasePeCoffExtraActionLibNull/BasePeCoffExtraActionLibNull.inf b/MdePkg/Library/BasePeCoffExtraActionLibNull/BasePeCoffExtraActionLibNull.inf
index 50b5bb3..de951da 100644
--- a/MdePkg/Library/BasePeCoffExtraActionLibNull/BasePeCoffExtraActionLibNull.inf
+++ b/MdePkg/Library/BasePeCoffExtraActionLibNull/BasePeCoffExtraActionLibNull.inf
@@ -29,7 +29,10 @@
 [Sources.common]
   PeCoffExtraActionLib.c
 
-
 [Packages]
   MdePkg/MdePkg.dec
 
+[LibraryClasses.common]
+  DebugLib
+
+
diff --git a/MdePkg/Library/BasePeCoffExtraActionLibNull/PeCoffExtraActionLib.c b/MdePkg/Library/BasePeCoffExtraActionLibNull/PeCoffExtraActionLib.c
index 47bb0db..6f52003 100644
--- a/MdePkg/Library/BasePeCoffExtraActionLibNull/PeCoffExtraActionLib.c
+++ b/MdePkg/Library/BasePeCoffExtraActionLibNull/PeCoffExtraActionLib.c
@@ -14,17 +14,15 @@
 
 #include <Base.h>
 #include <Library/PeCoffExtraActionLib.h>
+#include <Library/DebugLib.h>
 
 /**
-  Applies additional actions to relocate fixups to a PE/COFF image.
+  Performs additional actions after a PE/COFF image has been loaded and relocated.
 
-  Generally this function is called after sucessfully Applying relocation fixups 
-  to a PE/COFF image for some specicial purpose. 
-  As a example, For NT32 emulator, the function should be implemented and called
-  to support source level debug.  
-  
-  @param  ImageContext        Pointer to the image context structure that describes the PE/COFF
-                              image that is being relocated.
+  If ImageContext is NULL, then ASSERT().
+
+  @param  ImageContext  Pointer to the image context structure that describes the
+                        PE/COFF image that has already been loaded and relocated.
 
 **/
 VOID
@@ -33,20 +31,17 @@ PeCoffLoaderRelocateImageExtraAction (
   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
   )
 {
+  ASSERT (ImageContext != NULL);
 }  
 
 /**
-  Unloads a loaded PE/COFF image from memory and releases its taken resource.
-  
-  Releases any environment specific resources that were allocated when the image 
-  specified by ImageContext was loaded using PeCoffLoaderLoadImage(). 
-  For NT32 emulator, the PE/COFF image loaded by system needs to release.
-  For real platform, the PE/COFF image loaded by Core doesn't needs to be unloaded, 
+  Performs additional actions just before a PE/COFF image is unloaded.  Any resources
+  that were allocated by PeCoffLoaderRelocateImageExtraAction() must be freed.
   
   If ImageContext is NULL, then ASSERT().
   
-  @param  ImageContext              Pointer to the image context structure that describes the PE/COFF
-                                    image to be unloaded.
+  @param  ImageContext  Pointer to the image context structure that describes the
+                        PE/COFF image that is being unloaded.
 
 **/
 VOID
@@ -55,4 +50,5 @@ PeCoffLoaderUnloadImageExtraAction (
   IN OUT PE_COFF_LOADER_IMAGE_CONTEXT  *ImageContext
   )
 {
+  ASSERT (ImageContext != NULL);
 }