1.Fix SetMem64.S to not use SSE3 instruction

2.Make sure NULL-terminator can be appended.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@945 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BasePrintLib/PrintLib.c

@@ -550,7 +550,7 @@ BasePrintLibVSPrint (
   //
   // Null terminate the Unicode or ASCII string
   //
-  BasePrintLibFillBuffer (Buffer, EndBuffer, 1, 0, BytesPerOutputCharacter);
+  BasePrintLibFillBuffer (Buffer, EndBuffer + BytesPerOutputCharacter, 1, 0, BytesPerOutputCharacter);
   //
   // Make sure output buffer cannot contain more than PcdMaximumUnicodeStringLength
   // Unicode characters if PcdMaximumUnicodeStringLength is not zero. 

MdePkg/Library/BasePrintLib/PrintLibInternal.c

@@ -193,7 +193,7 @@ BasePrintLibConvertValueToString (
     }
   }
 
-  BasePrintLibFillBuffer (Buffer, EndBuffer, 1, 0, Increment);
+  BasePrintLibFillBuffer (Buffer, EndBuffer + Increment, 1, 0, Increment);
 
   return ((Buffer - OriginalBuffer) / Increment);
 }