1) Add type casting for argument "a" in EFI_ERROR(a), since if compare two constants without specify data type, compiler maybe could not understand what is the actual data type of constant. The default would treat it as unsigned data. therefore, if the argument a of EFI_ERROR(a) is constant, for instance the EFI_LOAD_ERROR, the EFI_ERROR(a) would always be FALSE.

2) Remove PcdDriverPcdLibNull.
3) Add more ASSERT() in BasePcdLibNull to detect the incorrect usage of Pcd Library.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3643 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BasePcdLibNull/PcdLib.c

@@ -33,9 +33,9 @@ LibPcdSetSku (
   IN UINTN  SkuId
   )
 {
-  ASSERT (SkuId < 0x100);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  return SkuId;
+  return 0;
 }
 
 
@@ -54,6 +54,8 @@ LibPcdGet8 (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -73,6 +75,8 @@ LibPcdGet16 (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -92,6 +96,8 @@ LibPcdGet32 (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -111,6 +117,8 @@ LibPcdGet64 (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -130,6 +138,8 @@ LibPcdGetPtr (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -149,6 +159,8 @@ LibPcdGetBool (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -168,6 +180,8 @@ LibPcdGetSize (
   IN UINTN             TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -191,7 +205,7 @@ LibPcdGetEx8 (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -216,7 +230,7 @@ LibPcdGetEx16 (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -241,7 +255,7 @@ LibPcdGetEx32 (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -266,7 +280,7 @@ LibPcdGetEx64 (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -291,7 +305,7 @@ LibPcdGetExPtr (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -316,7 +330,7 @@ LibPcdGetExBool (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -341,7 +355,7 @@ LibPcdGetExSize (
   IN UINTN             TokenNumber
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
   return 0;
 }
@@ -365,7 +379,9 @@ LibPcdSet8 (
   IN UINT8             Value
   )
 {
-  return Value;
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
+  return 0;
 }
 
 
@@ -387,7 +403,9 @@ LibPcdSet16 (
   IN UINT16            Value
   )
 {
-  return Value;
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
+  return 0;
 }
 
 
@@ -409,7 +427,9 @@ LibPcdSet32 (
   IN UINT32             Value
   )
 {
-  return Value;
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
+  return 0;
 }
 
 
@@ -431,7 +451,9 @@ LibPcdSet64 (
   IN UINT64             Value
   )
 {
-  return Value;
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
+  return 0;
 }
 
 
@@ -465,13 +487,9 @@ LibPcdSetPtr (
   IN      VOID              *Buffer
   )
 {
-  ASSERT (SizeOfBuffer != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  if (*SizeOfBuffer > 0) {
-    ASSERT (Buffer != NULL);
-  }
-
-  return Buffer;
+  return NULL;
 }
 
 
@@ -493,7 +511,9 @@ LibPcdSetBool (
   IN BOOLEAN           Value
   )
 {
-  return Value;
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
+  return FALSE;
 }
 
 
@@ -519,9 +539,9 @@ LibPcdSetEx8 (
   IN UINT8             Value
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  return Value;
+  return 0;
 }
 
 
@@ -547,9 +567,9 @@ LibPcdSetEx16 (
   IN UINT16            Value
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  return Value;
+  return 0;
 }
 
 
@@ -575,9 +595,9 @@ LibPcdSetEx32 (
   IN UINT32            Value
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  return Value;
+  return 0;
 }
 
 
@@ -603,9 +623,9 @@ LibPcdSetEx64 (
   IN UINT64            Value
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  return Value;
+  return 0;
 }
 
 
@@ -637,15 +657,9 @@ LibPcdSetExPtr (
   IN      VOID              *Buffer
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  ASSERT (SizeOfBuffer != NULL);
-  
-  if (*SizeOfBuffer > 0) {
-    ASSERT (Buffer != NULL);
-  }
-
-  return Buffer;
+  return NULL;
 }
 
 
@@ -671,9 +685,9 @@ LibPcdSetExBool (
   IN BOOLEAN           Value
   )
 {
-  ASSERT (Guid != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 
-  return Value;
+  return FALSE;
 }
 
 
@@ -702,7 +716,7 @@ LibPcdCallbackOnSet (
   IN PCD_CALLBACK             NotificationFunction
   )
 {
-  ASSERT (NotificationFunction != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 }
 
 
@@ -726,7 +740,7 @@ LibPcdCancelCallback (
   IN PCD_CALLBACK             NotificationFunction
   )
 {
-  ASSERT (NotificationFunction != NULL);
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
 }
 
 
@@ -754,6 +768,8 @@ LibPcdGetNextToken (
   IN       UINTN              TokenNumber
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return 0;
 }
 
@@ -782,6 +798,8 @@ LibPcdGetNextTokenSpace (
   IN CONST GUID  *Guid
   )
 {
+  ASSERT_EFI_ERROR (EFI_UNSUPPORTED);
+
   return NULL;
 }