AddrRange: Simplify AddrRange params Python hierarchy

This patch simplifies the Range object hierarchy in preparation for an
address range class that also allows striping (e.g. selecting a few
bits as matching in addition to the range).

To extend the AddrRange class to an AddrRegion, the first step is to
simplify the hierarchy such that we can make it as lean as possible
before adding the new functionality. The only class using Range and
MetaRange is AddrRange, and the three classes are now collapsed into
one.

1 files changed, 22 insertions, 44 deletions

diff --git a/src/python/m5/params.py b/src/python/m5/params.py
index c2da6171e..46c3d028c 100644
--- a/src/python/m5/params.py
+++ b/src/python/m5/params.py
@@ -549,86 +549,64 @@ class Addr(CheckedInt):
         else:
             return self.value + other
 
+class AddrRange(ParamValue):
+    cxx_type = 'Range<Addr>'
 
-class MetaRange(MetaParamValue):
-    def __init__(cls, name, bases, dict):
-        super(MetaRange, cls).__init__(name, bases, dict)
-        if name == 'Range':
-            return
-        cls.cxx_type = 'Range< %s >' % cls.type.cxx_type
-
-class Range(ParamValue):
-    __metaclass__ = MetaRange
-    type = Int # default; can be overridden in subclasses
     def __init__(self, *args, **kwargs):
         def handle_kwargs(self, kwargs):
             if 'end' in kwargs:
-                self.second = self.type(kwargs.pop('end'))
+                self.end = Addr(kwargs.pop('end'))
             elif 'size' in kwargs:
-                self.second = self.first + self.type(kwargs.pop('size')) - 1
+                self.end = self.start + Addr(kwargs.pop('size')) - 1
             else:
                 raise TypeError, "Either end or size must be specified"
 
         if len(args) == 0:
-            self.first = self.type(kwargs.pop('start'))
+            self.start = Addr(kwargs.pop('start'))
             handle_kwargs(self, kwargs)
 
         elif len(args) == 1:
             if kwargs:
-                self.first = self.type(args[0])
+                self.start = Addr(args[0])
                 handle_kwargs(self, kwargs)
-            elif isinstance(args[0], Range):
-                self.first = self.type(args[0].first)
-                self.second = self.type(args[0].second)
             elif isinstance(args[0], (list, tuple)):
-                self.first = self.type(args[0][0])
-                self.second = self.type(args[0][1])
+                self.start = Addr(args[0][0])
+                self.end = Addr(args[0][1])
             else:
-                self.first = self.type(0)
-                self.second = self.type(args[0]) - 1
+                self.start = Addr(0)
+                self.end = Addr(args[0]) - 1
 
         elif len(args) == 2:
-            self.first = self.type(args[0])
-            self.second = self.type(args[1])
+            self.start = Addr(args[0])
+            self.end = Addr(args[1])
         else:
             raise TypeError, "Too many arguments specified"
 
         if kwargs:
-            raise TypeError, "too many keywords: %s" % kwargs.keys()
+            raise TypeError, "Too many keywords: %s" % kwargs.keys()
 
     def __str__(self):
-        return '%s:%s' % (self.first, self.second)
+        return '%s:%s' % (self.start, self.end)
+
+    def size(self):
+        return long(self.end) - long(self.start) + 1
 
     @classmethod
     def cxx_predecls(cls, code):
-        cls.type.cxx_predecls(code)
+        Addr.cxx_predecls(code)
         code('#include "base/range.hh"')
 
     @classmethod
     def swig_predecls(cls, code):
-        cls.type.swig_predecls(code)
+        Addr.swig_predecls(code)
         code('%import "python/swig/range.i"')
 
-class AddrRange(Range):
-    type = Addr
-
     def getValue(self):
         from m5.internal.range import AddrRange
 
         value = AddrRange()
-        value.start = long(self.first)
-        value.end = long(self.second)
-        return value
-
-class TickRange(Range):
-    type = Tick
-
-    def getValue(self):
-        from m5.internal.range import TickRange
-
-        value = TickRange()
-        value.start = long(self.first)
-        value.end = long(self.second)
+        value.start = long(self.start)
+        value.end = long(self.end)
         return value
 
 # Boolean parameter type.  Python doesn't let you subclass bool, since
@@ -1643,7 +1621,7 @@ __all__ = ['Param', 'VectorParam',
            'MemorySize', 'MemorySize32',
            'Latency', 'Frequency', 'Clock',
            'NetworkBandwidth', 'MemoryBandwidth',
-           'Range', 'AddrRange', 'TickRange',
+           'AddrRange',
            'MaxAddr', 'MaxTick', 'AllMemory',
            'Time',
            'NextEthernetAddr', 'NULL',