d728d44b55
sim/pyconfig/m5config.py:
put panic, AddToPath, and Import here so they're always available.
--HG--
extra : convert_revision : 104dba5ccac0d64479b4109d477b5192c4b07a6e
1239 lines
41 KiB
Python
1239 lines
41 KiB
Python
# Copyright (c) 2004 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from __future__ import generators
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import os, re, sys, types
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env = {}
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env.update(os.environ)
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def defined(key):
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return env.has_key(key)
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def define(key, value = True):
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env[key] = value
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def panic(*args, **kwargs):
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sys.exit(*args, **kwargs)
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def AddToPath(path):
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path = os.path.realpath(path)
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if os.path.isdir(path):
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sys.path.append(path)
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def Import(path):
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AddToPath(os.path.dirname(path))
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exec('from m5config import *')
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mpy_exec(file(path, 'r'))
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def issequence(value):
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return isinstance(value, tuple) or isinstance(value, list)
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class Singleton(type):
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def __call__(cls, *args, **kwargs):
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if hasattr(cls, '_instance'):
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return cls._instance
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cls._instance = super(Singleton, cls).__call__(*args, **kwargs)
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return cls._instance
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if os.environ.has_key('FULL_SYSTEM'):
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FULL_SYSTEM = True
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#####################################################################
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#
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# M5 Python Configuration Utility
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#
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# The basic idea is to write simple Python programs that build Python
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# objects corresponding to M5 SimObjects for the deisred simulation
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# configuration. For now, the Python emits a .ini file that can be
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# parsed by M5. In the future, some tighter integration between M5
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# and the Python interpreter may allow bypassing the .ini file.
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#
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# Each SimObject class in M5 is represented by a Python class with the
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# same name. The Python inheritance tree mirrors the M5 C++ tree
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# (e.g., SimpleCPU derives from BaseCPU in both cases, and all
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# SimObjects inherit from a single SimObject base class). To specify
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# an instance of an M5 SimObject in a configuration, the user simply
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# instantiates the corresponding Python object. The parameters for
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# that SimObject are given by assigning to attributes of the Python
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# object, either using keyword assignment in the constructor or in
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# separate assignment statements. For example:
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#
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# cache = BaseCache('my_cache', root, size=64*K)
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# cache.hit_latency = 3
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# cache.assoc = 8
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#
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# (The first two constructor arguments specify the name of the created
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# cache and its parent node in the hierarchy.)
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#
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# The magic lies in the mapping of the Python attributes for SimObject
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# classes to the actual SimObject parameter specifications. This
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# allows parameter validity checking in the Python code. Continuing
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# the example above, the statements "cache.blurfl=3" or
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# "cache.assoc='hello'" would both result in runtime errors in Python,
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# since the BaseCache object has no 'blurfl' parameter and the 'assoc'
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# parameter requires an integer, respectively. This magic is done
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# primarily by overriding the special __setattr__ method that controls
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# assignment to object attributes.
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#
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# The Python module provides another class, ConfigNode, which is a
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# superclass of SimObject. ConfigNode implements the parent/child
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# relationship for building the configuration hierarchy tree.
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# Concrete instances of ConfigNode can be used to group objects in the
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# hierarchy, but do not correspond to SimObjects themselves (like a
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# .ini section with "children=" but no "type=".
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#
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# Once a set of Python objects have been instantiated in a hierarchy,
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# calling 'instantiate(obj)' (where obj is the root of the hierarchy)
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# will generate a .ini file. See simple-4cpu.py for an example
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# (corresponding to m5-test/simple-4cpu.ini).
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#
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#####################################################################
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#####################################################################
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#
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# ConfigNode/SimObject classes
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#
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# The Python class hierarchy rooted by ConfigNode (which is the base
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# class of SimObject, which in turn is the base class of all other M5
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# SimObject classes) has special attribute behavior. In general, an
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# object in this hierarchy has three categories of attribute-like
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# things:
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#
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# 1. Regular Python methods and variables. These must start with an
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# underscore to be treated normally.
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#
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# 2. SimObject parameters. These values are stored as normal Python
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# attributes, but all assignments to these attributes are checked
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# against the pre-defined set of parameters stored in the class's
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# _params dictionary. Assignments to attributes that do not
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# correspond to predefined parameters, or that are not of the correct
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# type, incur runtime errors.
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#
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# 3. Hierarchy children. The child nodes of a ConfigNode are stored
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# in the node's _children dictionary, but can be accessed using the
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# Python attribute dot-notation (just as they are printed out by the
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# simulator). Children cannot be created using attribute assigment;
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# they must be added by specifying the parent node in the child's
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# constructor or using the '+=' operator.
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# The SimObject parameters are the most complex, for a few reasons.
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# First, both parameter descriptions and parameter values are
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# inherited. Thus parameter description lookup must go up the
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# inheritance chain like normal attribute lookup, but this behavior
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# must be explicitly coded since the lookup occurs in each class's
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# _params attribute. Second, because parameter values can be set
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# on SimObject classes (to implement default values), the parameter
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# checking behavior must be enforced on class attribute assignments as
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# well as instance attribute assignments. Finally, because we allow
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# class specialization via inheritance (e.g., see the L1Cache class in
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# the simple-4cpu.py example), we must do parameter checking even on
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# class instantiation. To provide all these features, we use a
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# metaclass to define most of the SimObject parameter behavior for
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# this class hierarchy.
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#
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#####################################################################
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class Proxy(object):
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def __init__(self, path = ()):
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self._object = None
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self._path = path
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def __getattr__(self, attr):
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return Proxy(self._path + (attr, ))
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def __setattr__(self, attr, value):
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if not attr.startswith('_'):
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raise AttributeError, 'cannot set attribute %s' % attr
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super(Proxy, self).__setattr__(attr, value)
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def _convert(self):
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obj = self._object
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for attr in self._path:
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obj = obj.__getattribute__(attr)
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return obj
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Super = Proxy()
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def isSubClass(value, cls):
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try:
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return issubclass(value, cls)
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except:
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return False
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def isParam(self):
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return isinstance(self, _Param)
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def isConfigNode(value):
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try:
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return issubclass(value, ConfigNode)
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except:
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return False
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def isSimObject(value):
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try:
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return issubclass(value, SimObject)
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except:
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return False
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def isSimObjSequence(value):
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if not issequence(value):
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return False
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for val in value:
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if not isNullPointer(val) and not isConfigNode(val):
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return False
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return True
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# The metaclass for ConfigNode (and thus for everything that derives
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# from ConfigNode, including SimObject). This class controls how new
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# classes that derive from ConfigNode are instantiated, and provides
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# inherited class behavior (just like a class controls how instances
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# of that class are instantiated, and provides inherited instance
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# behavior).
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class MetaConfigNode(type):
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keywords = { 'abstract' : types.BooleanType,
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'check' : types.FunctionType,
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'_init' : types.FunctionType,
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'type' : (types.NoneType, types.StringType) }
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# __new__ is called before __init__, and is where the statements
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# in the body of the class definition get loaded into the class's
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# __dict__. We intercept this to filter out parameter assignments
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# and only allow "private" attributes to be passed to the base
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# __new__ (starting with underscore).
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def __new__(mcls, name, bases, dict):
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priv = { 'abstract' : False,
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# initialize _params and _values dicts to empty
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'_params' : {},
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'_values' : {},
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'_disable' : {} }
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for key,val in dict.items():
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if mcls.keywords.has_key(key):
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if not isinstance(val, mcls.keywords[key]):
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raise TypeError, \
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'keyword %s has the wrong type %s should be %s' % \
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(key, type(val), mcls.keywords[key])
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if isinstance(val, types.FunctionType):
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val = classmethod(val)
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priv[key] = val
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del dict[key]
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elif key.startswith('_'):
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priv[key] = val
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del dict[key]
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elif not isNullPointer(val) and isConfigNode(val):
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dict[key] = val()
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elif isSimObjSequence(val):
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dict[key] = [ v() for v in val ]
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# If your parent has a value in it that's a config node, clone it.
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for base in bases:
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if not isConfigNode(base):
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continue
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for name,value in base._values.iteritems():
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if dict.has_key(name):
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continue
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if isConfigNode(value):
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priv['_values'][name] = value()
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elif isSimObjSequence(value):
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priv['_values'][name] = [ val() for val in value ]
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# entries left in dict will get passed to __init__, where we'll
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# deal with them as params.
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return super(MetaConfigNode, mcls).__new__(mcls, name, bases, priv)
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# initialization: start out with an empty _params dict (makes life
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# simpler if we can assume _params is always valid).
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def __init__(cls, name, bases, dict):
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super(MetaConfigNode, cls).__init__(cls, name, bases, {})
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cls._bases = [c for c in cls.__mro__ if isConfigNode(c)]
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# initialize attributes with values from class definition
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for pname,value in dict.iteritems():
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setattr(cls, pname, value)
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if hasattr(cls, '_init'):
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cls._init()
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del cls._init
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def _isvalue(cls, name):
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for c in cls._bases:
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if c._params.has_key(name):
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return True
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for c in cls._bases:
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if c._values.has_key(name):
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return True
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return False
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# generator that iterates across all parameters for this class and
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# all classes it inherits from
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def _getparams(cls):
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params = {}
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for c in cls._bases:
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for p,v in c._params.iteritems():
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if not params.has_key(p):
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params[p] = v
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return params
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# Lookup a parameter description by name in the given class.
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def _getparam(cls, name, default = AttributeError):
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for c in cls._bases:
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if c._params.has_key(name):
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return c._params[name]
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if isSubClass(default, Exception):
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raise default, \
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"object '%s' has no attribute '%s'" % (cls.__name__, name)
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else:
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return default
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def _setparam(cls, name, value):
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cls._params[name] = value
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def _hasvalue(cls, name):
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for c in cls._bases:
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if c._values.has_key(name):
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return True
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return False
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def _getvalues(cls):
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values = {}
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for i,c in enumerate(cls._bases):
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for p,v in c._values.iteritems():
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if not values.has_key(p):
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values[p] = v
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return values
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def _getvalue(cls, name, default = AttributeError):
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value = None
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for c in cls._bases:
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if c._values.has_key(name):
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value = c._values[name]
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break
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if value is not None:
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return value
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param = cls._getparam(name, None)
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if param is not None and hasattr(param, 'default'):
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param.valid(param.default)
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value = param.default
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cls._setvalue(name, value)
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return value
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if isSubClass(default, Exception):
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raise default, 'value for %s not found' % name
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else:
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return default
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def _setvalue(cls, name, value):
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cls._values[name] = value
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def _getdisable(cls, name):
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for c in cls._bases:
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if c._disable.has_key(name):
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return c._disable[name]
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return False
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def _setdisable(cls, name, value):
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cls._disable[name] = value
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def __getattr__(cls, attr):
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if cls._isvalue(attr):
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return Value(cls, attr)
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raise AttributeError, \
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"object '%s' has no attribute '%s'" % (cls.__name__, cls)
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# Set attribute (called on foo.attr = value when foo is an
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# instance of class cls).
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def __setattr__(cls, attr, value):
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# normal processing for private attributes
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if attr.startswith('_'):
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type.__setattr__(cls, attr, value)
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return
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if cls.keywords.has_key(attr):
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raise TypeError, \
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"keyword '%s' can only be set in a simobj definition" % attr
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if isParam(value):
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cls._setparam(attr, value)
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return
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# must be SimObject param
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param = cls._getparam(attr, None)
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if param:
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# It's ok: set attribute by delegating to 'object' class.
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# Note the use of param.make_value() to verify/canonicalize
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# the assigned value
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param.valid(value)
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cls._setvalue(attr, value)
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elif isConfigNode(value) or isSimObjSequence(value):
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cls._setvalue(attr, value)
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else:
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for p,v in cls._getparams().iteritems():
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print p,v
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raise AttributeError, \
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"Class %s has no parameter %s" % (cls.__name__, attr)
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def add_child(cls, instance, name, child):
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if isNullPointer(child) or instance.top_child_names.has_key(name):
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return
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if issequence(child):
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kid = []
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for i,c in enumerate(child):
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n = '%s%d' % (name, i)
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k = c.instantiate(n, instance)
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instance.children.append(k)
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instance.child_names[n] = k
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instance.child_objects[c] = k
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kid.append(k)
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else:
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kid = child.instantiate(name, instance)
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instance.children.append(kid)
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instance.child_names[name] = kid
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instance.child_objects[child] = kid
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instance.top_child_names[name] = kid
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# Print instance info to .ini file.
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def instantiate(cls, name, parent = None):
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instance = Node(name, cls, cls.type, parent)
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if hasattr(cls, 'check'):
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cls.check()
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for key,value in cls._getvalues().iteritems():
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if cls._getdisable(key):
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continue
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if isConfigNode(value):
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cls.add_child(instance, key, value)
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if issequence(value):
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list = [ v for v in value if isConfigNode(v) ]
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if len(list):
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cls.add_child(instance, key, list)
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for pname,param in cls._getparams().iteritems():
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try:
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if cls._getdisable(pname):
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continue
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value = cls._getvalue(pname)
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if isConfigNode(value):
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value = instance.child_objects[value]
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elif issequence(value):
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v = []
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for val in value:
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if isConfigNode(val):
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v.append(instance.child_objects[val])
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else:
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v.append(val)
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value = v
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p = NodeParam(pname, param, value)
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instance.params.append(p)
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instance.param_names[pname] = p
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except:
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print 'Exception while evaluating %s.%s' % \
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(instance.path, pname)
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raise
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return instance
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def _convert(cls, value):
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realvalue = value
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if isinstance(value, Node):
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realvalue = value.realtype
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if isinstance(realvalue, Proxy):
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return value
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|
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if realvalue == None or isNullPointer(realvalue):
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return value
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|
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if isSubClass(realvalue, cls):
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return value
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raise TypeError, 'object %s type %s wrong type, should be %s' % \
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(repr(realvalue), realvalue, cls)
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def _string(cls, value):
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if isNullPointer(value):
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return 'Null'
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return Node._string(value)
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# The ConfigNode class is the root of the special hierarchy. Most of
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# the code in this class deals with the configuration hierarchy itself
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# (parent/child node relationships).
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class ConfigNode(object):
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# Specify metaclass. Any class inheriting from ConfigNode will
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# get this metaclass.
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__metaclass__ = MetaConfigNode
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type = None
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|
|
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def __new__(cls, **kwargs):
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return MetaConfigNode(cls.__name__, (cls, ), kwargs)
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|
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# Set attribute. All attribute assignments go through here. Must
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# be private attribute (starts with '_') or valid parameter entry.
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|
# Basically identical to MetaConfigClass.__setattr__(), except
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# this sets attributes on specific instances rather than on classes.
|
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#def __setattr__(self, attr, value):
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# if attr.startswith('_'):
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# object.__setattr__(self, attr, value)
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# return
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# not private; look up as param
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# param = self.__class__.lookup_param(attr)
|
|
# if not param:
|
|
# raise AttributeError, \
|
|
# "Class %s has no parameter %s" \
|
|
# % (self.__class__.__name__, attr)
|
|
# It's ok: set attribute by delegating to 'object' class.
|
|
# Note the use of param.make_value() to verify/canonicalize
|
|
# the assigned value.
|
|
# v = param.convert(value)
|
|
# object.__setattr__(self, attr, v)
|
|
|
|
# SimObject is a minimal extension of ConfigNode, implementing a
|
|
# hierarchy node that corresponds to an M5 SimObject. It prints out a
|
|
# "type=" line to indicate its SimObject class, prints out the
|
|
# assigned parameters corresponding to its class, and allows
|
|
# parameters to be set by keyword in the constructor. Note that most
|
|
# of the heavy lifting for the SimObject param handling is done in the
|
|
# MetaConfigNode metaclass.
|
|
class SimObject(ConfigNode):
|
|
def _sim_code(cls):
|
|
name = cls.__name__
|
|
param_names = cls._params.keys()
|
|
param_names.sort()
|
|
code = "BEGIN_DECLARE_SIM_OBJECT_PARAMS(%s)\n" % name
|
|
decls = [" " + cls._params[pname].sim_decl(pname) \
|
|
for pname in param_names]
|
|
code += "\n".join(decls) + "\n"
|
|
code += "END_DECLARE_SIM_OBJECT_PARAMS(%s)\n\n" % name
|
|
code += "BEGIN_INIT_SIM_OBJECT_PARAMS(%s)\n" % name
|
|
inits = [" " + cls._params[pname].sim_init(pname) \
|
|
for pname in param_names]
|
|
code += ",\n".join(inits) + "\n"
|
|
code += "END_INIT_SIM_OBJECT_PARAMS(%s)\n\n" % name
|
|
return code
|
|
_sim_code = classmethod(_sim_code)
|
|
|
|
class NodeParam(object):
|
|
def __init__(self, name, param, value):
|
|
self.name = name
|
|
self.param = param
|
|
self.ptype = param.ptype
|
|
self.convert = param.convert
|
|
self.string = param.string
|
|
self.value = value
|
|
|
|
class Node(object):
|
|
all = {}
|
|
def __init__(self, name, realtype, type, parent):
|
|
self.name = name
|
|
self.realtype = realtype
|
|
self.type = type
|
|
self.parent = parent
|
|
self.children = []
|
|
self.child_names = {}
|
|
self.child_objects = {}
|
|
self.top_child_names = {}
|
|
self.params = []
|
|
self.param_names = {}
|
|
|
|
path = [ self.name ]
|
|
node = self.parent
|
|
while node is not None:
|
|
if node.name != 'root':
|
|
path.insert(0, node.name)
|
|
else:
|
|
assert(node.parent is None)
|
|
node = node.parent
|
|
self.path = '.'.join(path)
|
|
|
|
def find(self, realtype, path):
|
|
rtype = eval(realtype)
|
|
if not path:
|
|
if issubclass(self.realtype, rtype):
|
|
return self, True
|
|
|
|
obj = None
|
|
for child in self.children:
|
|
if issubclass(child.realtype, rtype):
|
|
if obj is not None:
|
|
raise AttributeError, \
|
|
'Super matched more than one: %s %s' % \
|
|
(obj.path, child.path)
|
|
obj = child
|
|
return obj, obj is not None
|
|
|
|
try:
|
|
obj = self
|
|
for node in path[:-1]:
|
|
obj = obj.child_names[node]
|
|
|
|
last = path[-1]
|
|
if obj.child_names.has_key(last):
|
|
value = obj.child_names[last]
|
|
if issubclass(value.realtype, rtype):
|
|
return value, True
|
|
elif obj.param_names.has_key(last):
|
|
value = obj.param_names[last]
|
|
rtype._convert(value.value)
|
|
return value.value, True
|
|
except KeyError:
|
|
pass
|
|
|
|
return None, False
|
|
|
|
def unproxy(self, ptype, value):
|
|
if not isinstance(value, Proxy):
|
|
return value
|
|
|
|
if value is None:
|
|
raise AttributeError, 'Error while fixing up %s' % self.path
|
|
|
|
obj = self
|
|
done = False
|
|
while not done:
|
|
if obj is None:
|
|
raise AttributeError, \
|
|
'Parent of %s type %s not found at path %s' \
|
|
% (self.name, ptype, value._path)
|
|
found, done = obj.find(ptype, value._path)
|
|
if isinstance(found, Proxy):
|
|
done = false
|
|
obj = obj.parent
|
|
|
|
return found
|
|
|
|
def fixup(self):
|
|
self.all[self.path] = self
|
|
|
|
for param in self.params:
|
|
ptype = param.ptype
|
|
pval = param.value
|
|
|
|
try:
|
|
if issequence(pval):
|
|
param.value = [ self.unproxy(ptype, pv) for pv in pval ]
|
|
else:
|
|
param.value = self.unproxy(ptype, pval)
|
|
except:
|
|
print 'Error while fixing up %s:%s' % (self.path, param.name)
|
|
raise
|
|
|
|
for child in self.children:
|
|
assert(child != self)
|
|
child.fixup()
|
|
|
|
# print type and parameter values to .ini file
|
|
def display(self):
|
|
print '[' + self.path + ']' # .ini section header
|
|
|
|
if isSimObject(self.realtype):
|
|
print 'type = %s' % self.type
|
|
|
|
if self.children:
|
|
# instantiate children in same order they were added for
|
|
# backward compatibility (else we can end up with cpu1
|
|
# before cpu0).
|
|
print 'children =', ' '.join([ c.name for c in self.children])
|
|
|
|
for param in self.params:
|
|
try:
|
|
if param.value is None:
|
|
raise AttributeError, 'Parameter with no value'
|
|
|
|
value = param.convert(param.value)
|
|
string = param.string(value)
|
|
except:
|
|
print 'exception in %s:%s' % (self.path, param.name)
|
|
raise
|
|
|
|
print '%s = %s' % (param.name, string)
|
|
|
|
print
|
|
|
|
# recursively dump out children
|
|
for c in self.children:
|
|
c.display()
|
|
|
|
def _string(cls, value):
|
|
if not isinstance(value, Node):
|
|
raise AttributeError, 'expecting %s got %s' % (Node, value)
|
|
return value.path
|
|
_string = classmethod(_string)
|
|
|
|
#####################################################################
|
|
#
|
|
# Parameter description classes
|
|
#
|
|
# The _params dictionary in each class maps parameter names to
|
|
# either a Param or a VectorParam object. These objects contain the
|
|
# parameter description string, the parameter type, and the default
|
|
# value (loaded from the PARAM section of the .odesc files). The
|
|
# _convert() method on these objects is used to force whatever value
|
|
# is assigned to the parameter to the appropriate type.
|
|
#
|
|
# Note that the default values are loaded into the class's attribute
|
|
# space when the parameter dictionary is initialized (in
|
|
# MetaConfigNode._setparams()); after that point they aren't used.
|
|
#
|
|
#####################################################################
|
|
|
|
def isNullPointer(value):
|
|
return isinstance(value, NullSimObject)
|
|
|
|
class Value(object):
|
|
def __init__(self, obj, attr):
|
|
super(Value, self).__setattr__('attr', attr)
|
|
super(Value, self).__setattr__('obj', obj)
|
|
|
|
def _getattr(self):
|
|
return self.obj._getvalue(self.attr)
|
|
|
|
def __setattr__(self, attr, value):
|
|
if attr == 'disable':
|
|
self.obj._setdisable(self.attr, value)
|
|
else:
|
|
setattr(self._getattr(), attr, value)
|
|
|
|
def __getattr__(self, attr):
|
|
if attr == 'disable':
|
|
return self.obj._getdisable(self.attr)
|
|
else:
|
|
return getattr(self._getattr(), attr)
|
|
|
|
def __getitem__(self, index):
|
|
return self._getattr().__getitem__(index)
|
|
|
|
def __call__(self, *args, **kwargs):
|
|
return self._getattr().__call__(*args, **kwargs)
|
|
|
|
def __nonzero__(self):
|
|
return bool(self._getattr())
|
|
|
|
def __str__(self):
|
|
return str(self._getattr())
|
|
|
|
# Regular parameter.
|
|
class _Param(object):
|
|
def __init__(self, ptype, *args, **kwargs):
|
|
self.ptype = ptype
|
|
|
|
if args:
|
|
if len(args) == 1:
|
|
self.desc = args[0]
|
|
elif len(args) == 2:
|
|
self.default = args[0]
|
|
self.desc = args[1]
|
|
else:
|
|
raise TypeError, 'too many arguments'
|
|
|
|
if kwargs.has_key('desc'):
|
|
assert(not hasattr(self, 'desc'))
|
|
self.desc = kwargs['desc']
|
|
del kwargs['desc']
|
|
|
|
if kwargs.has_key('default'):
|
|
assert(not hasattr(self, 'default'))
|
|
self.default = kwargs['default']
|
|
del kwargs['default']
|
|
|
|
if kwargs:
|
|
raise TypeError, 'extra unknown kwargs %s' % kwargs
|
|
|
|
if not hasattr(self, 'desc'):
|
|
raise TypeError, 'desc attribute missing'
|
|
|
|
def valid(self, value):
|
|
if not isinstance(value, Proxy):
|
|
ptype = eval(self.ptype)
|
|
ptype._convert(value)
|
|
|
|
def convert(self, value):
|
|
ptype = eval(self.ptype)
|
|
return ptype._convert(value)
|
|
|
|
def string(self, value):
|
|
ptype = eval(self.ptype)
|
|
return ptype._string(value)
|
|
|
|
def get(self, name, instance, owner):
|
|
# nothing to do if None or already correct type. Also allow NULL
|
|
# pointer to be assigned where a SimObject is expected.
|
|
try:
|
|
if value == None or isinstance(value, self.ptype) or \
|
|
isConfigNode(self.ptype) and \
|
|
(isNullPointer(value) or issubclass(value, self.ptype)):
|
|
return value
|
|
|
|
except TypeError:
|
|
# this type conversion will raise an exception if it's illegal
|
|
return self.ptype(value)
|
|
|
|
def set(self, name, instance, value):
|
|
instance.__dict__[name] = value
|
|
|
|
def sim_decl(self, name):
|
|
return 'Param<%s> %s;' % (self.ptype.__name__, name)
|
|
|
|
def sim_init(self, name):
|
|
if self.default == None:
|
|
return 'INIT_PARAM(%s, "%s")' % (name, self.desc)
|
|
else:
|
|
return 'INIT_PARAM_DFLT(%s, "%s", %s)' % \
|
|
(name, self.desc, str(self.default))
|
|
|
|
class _ParamProxy(object):
|
|
def __init__(self, type):
|
|
self.ptype = type
|
|
|
|
# E.g., Param.Int(5, "number of widgets")
|
|
def __call__(self, *args, **kwargs):
|
|
return _Param(self.ptype, *args, **kwargs)
|
|
|
|
def __getattr__(self, attr):
|
|
if attr == '__bases__':
|
|
raise AttributeError, ''
|
|
cls = type(self)
|
|
return cls(attr)
|
|
|
|
def __setattr__(self, attr, value):
|
|
if attr != 'ptype':
|
|
raise AttributeError, \
|
|
'Attribute %s not available in %s' % (attr, self.__class__)
|
|
super(_ParamProxy, self).__setattr__(attr, value)
|
|
|
|
|
|
Param = _ParamProxy(None)
|
|
|
|
# Vector-valued parameter description. Just like Param, except that
|
|
# the value is a vector (list) of the specified type instead of a
|
|
# single value.
|
|
class _VectorParam(_Param):
|
|
def __init__(self, type, *args, **kwargs):
|
|
_Param.__init__(self, type, *args, **kwargs)
|
|
|
|
def valid(self, value):
|
|
if value == None:
|
|
return True
|
|
|
|
ptype = eval(self.ptype)
|
|
if issequence(value):
|
|
for val in value:
|
|
if not isinstance(val, Proxy):
|
|
ptype._convert(val)
|
|
elif not isinstance(value, Proxy):
|
|
ptype._convert(value)
|
|
|
|
# Convert assigned value to appropriate type. If the RHS is not a
|
|
# list or tuple, it generates a single-element list.
|
|
def convert(self, value):
|
|
if value == None:
|
|
return []
|
|
|
|
ptype = eval(self.ptype)
|
|
if issequence(value):
|
|
# list: coerce each element into new list
|
|
return [ ptype._convert(v) for v in value ]
|
|
else:
|
|
# singleton: coerce & wrap in a list
|
|
return ptype._convert(value)
|
|
|
|
def string(self, value):
|
|
ptype = eval(self.ptype)
|
|
if issequence(value):
|
|
return ' '.join([ ptype._string(v) for v in value])
|
|
else:
|
|
return ptype._string(value)
|
|
|
|
def sim_decl(self, name):
|
|
return 'VectorParam<%s> %s;' % (self.ptype.__name__, name)
|
|
|
|
class _VectorParamProxy(_ParamProxy):
|
|
# E.g., VectorParam.Int(5, "number of widgets")
|
|
def __call__(self, *args, **kwargs):
|
|
return _VectorParam(self.ptype, *args, **kwargs)
|
|
|
|
VectorParam = _VectorParamProxy(None)
|
|
|
|
#####################################################################
|
|
#
|
|
# Parameter Types
|
|
#
|
|
# Though native Python types could be used to specify parameter types
|
|
# (the 'ptype' field of the Param and VectorParam classes), it's more
|
|
# flexible to define our own set of types. This gives us more control
|
|
# over how Python expressions are converted to values (via the
|
|
# __init__() constructor) and how these values are printed out (via
|
|
# the __str__() conversion method). Eventually we'll need these types
|
|
# to correspond to distinct C++ types as well.
|
|
#
|
|
#####################################################################
|
|
# Integer parameter type.
|
|
class _CheckedInt(object):
|
|
def _convert(cls, value):
|
|
t = type(value)
|
|
if t == bool:
|
|
return int(value)
|
|
|
|
if t != int and t != long and t != float and t != str:
|
|
raise TypeError, 'Integer parameter of invalid type %s' % t
|
|
|
|
if t == str or t == float:
|
|
value = long(value)
|
|
|
|
if not cls._min <= value <= cls._max:
|
|
raise TypeError, 'Integer parameter out of bounds %d < %d < %d' % \
|
|
(cls._min, value, cls._max)
|
|
|
|
return value
|
|
_convert = classmethod(_convert)
|
|
|
|
def _string(cls, value):
|
|
return str(value)
|
|
_string = classmethod(_string)
|
|
|
|
class CheckedInt(type):
|
|
def __new__(cls, name, min, max):
|
|
# New class derives from _CheckedInt base with proper bounding
|
|
# parameters
|
|
dict = { '_name' : name, '_min' : min, '_max' : max }
|
|
return type.__new__(cls, name, (_CheckedInt, ), dict)
|
|
|
|
class CheckedIntType(CheckedInt):
|
|
def __new__(cls, name, size, unsigned):
|
|
dict = {}
|
|
if unsigned:
|
|
min = 0
|
|
max = 2 ** size - 1
|
|
else:
|
|
min = -(2 ** (size - 1))
|
|
max = (2 ** (size - 1)) - 1
|
|
|
|
return super(cls, CheckedIntType).__new__(cls, name, min, max)
|
|
|
|
Int = CheckedIntType('int', 32, False)
|
|
Unsigned = CheckedIntType('unsigned', 32, True)
|
|
|
|
Int8 = CheckedIntType('int8_t', 8, False)
|
|
UInt8 = CheckedIntType('uint8_t', 8, True)
|
|
Int16 = CheckedIntType('int16_t', 16, False)
|
|
UInt16 = CheckedIntType('uint16_t', 16, True)
|
|
Int32 = CheckedIntType('int32_t', 32, False)
|
|
UInt32 = CheckedIntType('uint32_t', 32, True)
|
|
Int64 = CheckedIntType('int64_t', 64, False)
|
|
UInt64 = CheckedIntType('uint64_t', 64, True)
|
|
|
|
Counter = CheckedIntType('Counter', 64, True)
|
|
Addr = CheckedIntType('Addr', 64, True)
|
|
Tick = CheckedIntType('Tick', 64, True)
|
|
|
|
Percent = CheckedInt('int', 0, 100)
|
|
|
|
class Pair(object):
|
|
def __init__(self, first, second):
|
|
self.first = first
|
|
self.second = second
|
|
|
|
class _Range(object):
|
|
def _convert(cls, value):
|
|
if not isinstance(value, Pair):
|
|
raise TypeError, 'value %s is not a Pair' % value
|
|
return Pair(cls._type._convert(value.first),
|
|
cls._type._convert(value.second))
|
|
_convert = classmethod(_convert)
|
|
|
|
def _string(cls, value):
|
|
return '%s:%s' % (cls._type._string(value.first),
|
|
cls._type._string(value.second))
|
|
_string = classmethod(_string)
|
|
|
|
def RangeSize(start, size):
|
|
return Pair(start, start + size - 1)
|
|
|
|
class Range(type):
|
|
def __new__(cls, type):
|
|
dict = { '_name' : 'Range<%s>' + type._name, '_type' : type }
|
|
cname = 'Range_' + type.__name__
|
|
return super(cls, Range).__new__(cls, cname, (_Range, ), dict)
|
|
|
|
AddrRange = Range(Addr)
|
|
|
|
# Boolean parameter type.
|
|
class Bool(object):
|
|
_name = 'bool'
|
|
def _convert(value):
|
|
t = type(value)
|
|
if t == bool:
|
|
return value
|
|
|
|
if t == int or t == long:
|
|
return bool(value)
|
|
|
|
if t == str:
|
|
v = value.lower()
|
|
if v == "true" or v == "t" or v == "yes" or v == "y":
|
|
return True
|
|
elif v == "false" or v == "f" or v == "no" or v == "n":
|
|
return False
|
|
|
|
raise TypeError, 'Bool parameter (%s) of invalid type %s' % (v, t)
|
|
_convert = staticmethod(_convert)
|
|
|
|
def _string(value):
|
|
if value:
|
|
return "true"
|
|
else:
|
|
return "false"
|
|
_string = staticmethod(_string)
|
|
|
|
# String-valued parameter.
|
|
class String(object):
|
|
_name = 'string'
|
|
|
|
# Constructor. Value must be Python string.
|
|
def _convert(cls,value):
|
|
if value is None:
|
|
return ''
|
|
if isinstance(value, str):
|
|
return value
|
|
|
|
raise TypeError, \
|
|
"String param got value %s %s" % (repr(value), type(value))
|
|
_convert = classmethod(_convert)
|
|
|
|
# Generate printable string version. Not too tricky.
|
|
def _string(cls, value):
|
|
return value
|
|
_string = classmethod(_string)
|
|
|
|
|
|
def IncEthernetAddr(addr, val = 1):
|
|
bytes = map(lambda x: int(x, 16), addr.split(':'))
|
|
bytes[5] += val
|
|
for i in (5, 4, 3, 2, 1):
|
|
val,rem = divmod(bytes[i], 256)
|
|
bytes[i] = rem
|
|
if val == 0:
|
|
break
|
|
bytes[i - 1] += val
|
|
assert(bytes[0] <= 255)
|
|
return ':'.join(map(lambda x: '%02x' % x, bytes))
|
|
|
|
class NextEthernetAddr(object):
|
|
__metaclass__ = Singleton
|
|
addr = "00:90:00:00:00:01"
|
|
|
|
def __init__(self, inc = 1):
|
|
self.value = self.addr
|
|
self.addr = IncEthernetAddr(self.addr, inc)
|
|
|
|
class EthernetAddr(object):
|
|
_name = 'EthAddr'
|
|
|
|
def _convert(cls, value):
|
|
if value == NextEthernetAddr:
|
|
return value
|
|
|
|
if not isinstance(value, str):
|
|
raise TypeError, "expected an ethernet address and didn't get one"
|
|
|
|
bytes = value.split(':')
|
|
if len(bytes) != 6:
|
|
raise TypeError, 'invalid ethernet address %s' % value
|
|
|
|
for byte in bytes:
|
|
if not 0 <= int(byte) <= 256:
|
|
raise TypeError, 'invalid ethernet address %s' % value
|
|
|
|
return value
|
|
_convert = classmethod(_convert)
|
|
|
|
def _string(cls, value):
|
|
if value == NextEthernetAddr:
|
|
value = value().value
|
|
return value
|
|
_string = classmethod(_string)
|
|
|
|
# Special class for NULL pointers. Note the special check in
|
|
# make_param_value() above that lets these be assigned where a
|
|
# SimObject is required.
|
|
# only one copy of a particular node
|
|
class NullSimObject(object):
|
|
__metaclass__ = Singleton
|
|
_name = 'NULL'
|
|
|
|
def __call__(cls):
|
|
return cls
|
|
|
|
def _sim_code(cls):
|
|
pass
|
|
_sim_code = classmethod(_sim_code)
|
|
|
|
def _instantiate(self, parent = None, path = ''):
|
|
pass
|
|
|
|
def _convert(cls, value):
|
|
if value == Nxone:
|
|
return
|
|
|
|
if isinstance(value, cls):
|
|
return value
|
|
|
|
raise TypeError, 'object %s %s of the wrong type, should be %s' % \
|
|
(repr(value), type(value), cls)
|
|
_convert = classmethod(_convert)
|
|
|
|
def _string():
|
|
return 'NULL'
|
|
_string = staticmethod(_string)
|
|
|
|
# The only instance you'll ever need...
|
|
Null = NULL = NullSimObject()
|
|
|
|
# Enumerated types are a little more complex. The user specifies the
|
|
# type as Enum(foo) where foo is either a list or dictionary of
|
|
# alternatives (typically strings, but not necessarily so). (In the
|
|
# long run, the integer value of the parameter will be the list index
|
|
# or the corresponding dictionary value. For now, since we only check
|
|
# that the alternative is valid and then spit it into a .ini file,
|
|
# there's not much point in using the dictionary.)
|
|
|
|
# What Enum() must do is generate a new type encapsulating the
|
|
# provided list/dictionary so that specific values of the parameter
|
|
# can be instances of that type. We define two hidden internal
|
|
# classes (_ListEnum and _DictEnum) to serve as base classes, then
|
|
# derive the new type from the appropriate base class on the fly.
|
|
|
|
|
|
# Base class for Enum types.
|
|
class _Enum(object):
|
|
def _convert(self, value):
|
|
if value not in self.map:
|
|
raise TypeError, "Enum param got bad value '%s' (not in %s)" \
|
|
% (value, self.map)
|
|
return value
|
|
_convert = classmethod(_convert)
|
|
|
|
# Generate printable string version of value.
|
|
def _string(self, value):
|
|
return str(value)
|
|
_string = classmethod(_string)
|
|
|
|
# Enum metaclass... calling Enum(foo) generates a new type (class)
|
|
# that derives from _ListEnum or _DictEnum as appropriate.
|
|
class Enum(type):
|
|
# counter to generate unique names for generated classes
|
|
counter = 1
|
|
|
|
def __new__(cls, *args):
|
|
if len(args) > 1:
|
|
enum_map = args
|
|
else:
|
|
enum_map = args[0]
|
|
|
|
if isinstance(enum_map, dict):
|
|
map = enum_map
|
|
elif issequence(enum_map):
|
|
map = {}
|
|
for idx,val in enumerate(enum_map):
|
|
map[val] = idx
|
|
else:
|
|
raise TypeError, "Enum map must be list or dict (got %s)" % map
|
|
|
|
classname = "Enum%04d" % Enum.counter
|
|
Enum.counter += 1
|
|
|
|
# New class derives from _Enum base, and gets a 'map'
|
|
# attribute containing the specified list or dict.
|
|
return type.__new__(cls, classname, (_Enum, ), { 'map': map })
|
|
|
|
|
|
#
|
|
# "Constants"... handy aliases for various values.
|
|
#
|
|
|
|
# For compatibility with C++ bool constants.
|
|
false = False
|
|
true = True
|
|
|
|
# Some memory range specifications use this as a default upper bound.
|
|
MAX_ADDR = Addr._max
|
|
|
|
# For power-of-two sizing, e.g. 64*K gives an integer value 65536.
|
|
K = 1024
|
|
M = K*K
|
|
G = K*M
|
|
|
|
#####################################################################
|
|
|
|
# Munge an arbitrary Python code string to get it to execute (mostly
|
|
# dealing with indentation). Stolen from isa_parser.py... see
|
|
# comments there for a more detailed description.
|
|
#def fixPythonIndentation(s):
|
|
# # get rid of blank lines first
|
|
# s = re.sub(r'(?m)^\s*\n', '', s);
|
|
# if (s != '' and re.match(r'[ \t]', s[0])):
|
|
# s = 'if 1:\n' + s
|
|
# return s
|
|
|
|
# Hook to generate C++ parameter code.
|
|
def gen_sim_code(file):
|
|
for objname in sim_object_list:
|
|
print >> file, eval("%s._sim_code()" % objname)
|
|
|
|
# The final hook to generate .ini files. Called from configuration
|
|
# script once config is built.
|
|
def instantiate(root):
|
|
if not issubclass(root, Root):
|
|
raise AttributeError, 'Can only instantiate the Root of the tree'
|
|
|
|
instance = root.instantiate('root')
|
|
instance.fixup()
|
|
instance.display()
|
|
|
|
from objects import *
|
|
|