Move the masking code into the data layer.

volatility/framework/interfaces/objects.py

@@ -6,7 +6,6 @@ Created on 6 May 2013
 
 import collections
 import collections.abc
-import math
 from abc import ABCMeta, abstractmethod
 
 from volatility.framework import validity
@@ -69,7 +68,7 @@ class ObjectInterface(validity.ValidityRoutines, metaclass = ABCMeta):
         #
 
         # Normalize offsets
-        mask = (1 << int(math.ceil(math.log2(context.memory[object_info.layer_name].maximum_address)))) - 1
+        mask = context.memory[object_info.layer_name].address_mask
         normalized_offset = object_info.offset & mask
 
         self._vol = collections.ChainMap({}, object_info, {'type_name': type_name}, {'offset': normalized_offset},