-# Copyright (c) 2004-2006 The Regents of The University of Michigan
+# Copyright (c) 2008 The Hewlett-Packard Development Company
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
-# Authors: Steve Reinhardt
-# Nathan Binkert
+# Authors: Nathan Binkert
-import os, re, sys, types, inspect, copy
+import os
+from os.path import isdir, isfile, join as joinpath
-import m5
-from m5 import panic, cc_main
-from convert import *
-from multidict import multidict
-noDot = False
-try:
- import pydot
-except:
- noDot = True
+confdir = os.environ.get('M5_CONFIG')
-class Singleton(type):
- def __call__(cls, *args, **kwargs):
- if hasattr(cls, '_instance'):
- return cls._instance
+if not confdir:
+ # HOME is not set when running regressions, due to use of scons
+ # Execute() function.
+ homedir = os.environ.get('HOME')
+ if homedir and isdir(joinpath(homedir, '.m5')):
+ confdir = joinpath(homedir, '.m5')
- cls._instance = super(Singleton, cls).__call__(*args, **kwargs)
- return cls._instance
+def get(name):
+ if not confdir:
+ return None
+ conffile = joinpath(confdir, name)
+ if not isfile(conffile):
+ return None
-#####################################################################
-#
-# M5 Python Configuration Utility
-#
-# The basic idea is to write simple Python programs that build Python
-# objects corresponding to M5 SimObjects for the desired simulation
-# configuration. For now, the Python emits a .ini file that can be
-# parsed by M5. In the future, some tighter integration between M5
-# and the Python interpreter may allow bypassing the .ini file.
-#
-# Each SimObject class in M5 is represented by a Python class with the
-# same name. The Python inheritance tree mirrors the M5 C++ tree
-# (e.g., SimpleCPU derives from BaseCPU in both cases, and all
-# SimObjects inherit from a single SimObject base class). To specify
-# an instance of an M5 SimObject in a configuration, the user simply
-# instantiates the corresponding Python object. The parameters for
-# that SimObject are given by assigning to attributes of the Python
-# object, either using keyword assignment in the constructor or in
-# separate assignment statements. For example:
-#
-# cache = BaseCache(size='64KB')
-# cache.hit_latency = 3
-# cache.assoc = 8
-#
-# The magic lies in the mapping of the Python attributes for SimObject
-# classes to the actual SimObject parameter specifications. This
-# allows parameter validity checking in the Python code. Continuing
-# the example above, the statements "cache.blurfl=3" or
-# "cache.assoc='hello'" would both result in runtime errors in Python,
-# since the BaseCache object has no 'blurfl' parameter and the 'assoc'
-# parameter requires an integer, respectively. This magic is done
-# primarily by overriding the special __setattr__ method that controls
-# assignment to object attributes.
-#
-# Once a set of Python objects have been instantiated in a hierarchy,
-# calling 'instantiate(obj)' (where obj is the root of the hierarchy)
-# will generate a .ini file.
-#
-#####################################################################
-
-# dict to look up SimObjects based on path
-instanceDict = {}
-
-#############################
-#
-# Utility methods
-#
-#############################
-
-def isSimObject(value):
- return isinstance(value, SimObject)
-
-def isSimObjectSequence(value):
- if not isinstance(value, (list, tuple)) or len(value) == 0:
- return False
-
- for val in value:
- if not isNullPointer(val) and not isSimObject(val):
- return False
-
- return True
-
-def isSimObjectOrSequence(value):
- return isSimObject(value) or isSimObjectSequence(value)
-
-def isNullPointer(value):
- return isinstance(value, NullSimObject)
-
-# Apply method to object.
-# applyMethod(obj, 'meth', <args>) is equivalent to obj.meth(<args>)
-def applyMethod(obj, meth, *args, **kwargs):
- return getattr(obj, meth)(*args, **kwargs)
-
-# If the first argument is an (non-sequence) object, apply the named
-# method with the given arguments. If the first argument is a
-# sequence, apply the method to each element of the sequence (a la
-# 'map').
-def applyOrMap(objOrSeq, meth, *args, **kwargs):
- if not isinstance(objOrSeq, (list, tuple)):
- return applyMethod(objOrSeq, meth, *args, **kwargs)
- else:
- return [applyMethod(o, meth, *args, **kwargs) for o in objOrSeq]
-
-
-# The metaclass for SimObject. This class controls how new classes
-# that derive from SimObject are instantiated, and provides inherited
-# class behavior (just like a class controls how instances of that
-# class are instantiated, and provides inherited instance behavior).
-class MetaSimObject(type):
- # Attributes that can be set only at initialization time
- init_keywords = { 'abstract' : types.BooleanType,
- 'type' : types.StringType }
- # Attributes that can be set any time
- keywords = { 'check' : types.FunctionType }
-
- # __new__ is called before __init__, and is where the statements
- # in the body of the class definition get loaded into the class's
- # __dict__. We intercept this to filter out parameter & port assignments
- # and only allow "private" attributes to be passed to the base
- # __new__ (starting with underscore).
- def __new__(mcls, name, bases, dict):
- # Copy "private" attributes, functions, and classes to the
- # official dict. Everything else goes in _init_dict to be
- # filtered in __init__.
- cls_dict = {}
- value_dict = {}
- for key,val in dict.items():
- if key.startswith('_') or isinstance(val, (types.FunctionType,
- types.TypeType)):
- cls_dict[key] = val
- else:
- # must be a param/port setting
- value_dict[key] = val
- cls_dict['_value_dict'] = value_dict
- return super(MetaSimObject, mcls).__new__(mcls, name, bases, cls_dict)
-
- # subclass initialization
- def __init__(cls, name, bases, dict):
- # calls type.__init__()... I think that's a no-op, but leave
- # it here just in case it's not.
- super(MetaSimObject, cls).__init__(name, bases, dict)
-
- # initialize required attributes
-
- # class-only attributes
- cls._params = multidict() # param descriptions
- cls._ports = multidict() # port descriptions
-
- # class or instance attributes
- cls._values = multidict() # param values
- cls._port_map = multidict() # port bindings
- cls._instantiated = False # really instantiated, cloned, or subclassed
-
- # We don't support multiple inheritance. If you want to, you
- # must fix multidict to deal with it properly.
- if len(bases) > 1:
- raise TypeError, "SimObjects do not support multiple inheritance"
-
- base = bases[0]
-
- # Set up general inheritance via multidicts. A subclass will
- # inherit all its settings from the base class. The only time
- # the following is not true is when we define the SimObject
- # class itself (in which case the multidicts have no parent).
- if isinstance(base, MetaSimObject):
- cls._params.parent = base._params
- cls._ports.parent = base._ports
- cls._values.parent = base._values
- cls._port_map.parent = base._port_map
- # mark base as having been subclassed
- base._instantiated = True
-
- # Now process the _value_dict items. They could be defining
- # new (or overriding existing) parameters or ports, setting
- # class keywords (e.g., 'abstract'), or setting parameter
- # values or port bindings. The first 3 can only be set when
- # the class is defined, so we handle them here. The others
- # can be set later too, so just emulate that by calling
- # setattr().
- for key,val in cls._value_dict.items():
- # param descriptions
- if isinstance(val, ParamDesc):
- cls._new_param(key, val)
-
- # port objects
- elif isinstance(val, Port):
- cls._ports[key] = val
-
- # init-time-only keywords
- elif cls.init_keywords.has_key(key):
- cls._set_keyword(key, val, cls.init_keywords[key])
-
- # default: use normal path (ends up in __setattr__)
- else:
- setattr(cls, key, val)
-
- def _set_keyword(cls, keyword, val, kwtype):
- if not isinstance(val, kwtype):
- raise TypeError, 'keyword %s has bad type %s (expecting %s)' % \
- (keyword, type(val), kwtype)
- if isinstance(val, types.FunctionType):
- val = classmethod(val)
- type.__setattr__(cls, keyword, val)
-
- def _new_param(cls, name, value):
- cls._params[name] = value
- if hasattr(value, 'default'):
- setattr(cls, name, value.default)
-
- # Set attribute (called on foo.attr = value when foo is an
- # instance of class cls).
- def __setattr__(cls, attr, value):
- # normal processing for private attributes
- if attr.startswith('_'):
- type.__setattr__(cls, attr, value)
- return
-
- if cls.keywords.has_key(attr):
- cls._set_keyword(attr, value, cls.keywords[attr])
- return
-
- if cls._ports.has_key(attr):
- self._ports[attr].connect(self, attr, value)
- return
-
- if isSimObjectOrSequence(value) and cls._instantiated:
- raise RuntimeError, \
- "cannot set SimObject parameter '%s' after\n" \
- " class %s has been instantiated or subclassed" \
- % (attr, cls.__name__)
-
- # check for param
- param = cls._params.get(attr, None)
- if param:
- try:
- cls._values[attr] = param.convert(value)
- except Exception, e:
- msg = "%s\nError setting param %s.%s to %s\n" % \
- (e, cls.__name__, attr, value)
- e.args = (msg, )
- raise
- elif isSimObjectOrSequence(value):
- # if RHS is a SimObject, it's an implicit child assignment
- cls._values[attr] = value
- else:
- raise AttributeError, \
- "Class %s has no parameter \'%s\'" % (cls.__name__, attr)
-
- def __getattr__(cls, attr):
- if cls._values.has_key(attr):
- return cls._values[attr]
-
- raise AttributeError, \
- "object '%s' has no attribute '%s'" % (cls.__name__, attr)
-
-# The SimObject class is the root of the special hierarchy. Most of
-# the code in this class deals with the configuration hierarchy itself
-# (parent/child node relationships).
-class SimObject(object):
- # Specify metaclass. Any class inheriting from SimObject will
- # get this metaclass.
- __metaclass__ = MetaSimObject
-
- # Initialize new instance. For objects with SimObject-valued
- # children, we need to recursively clone the classes represented
- # by those param values as well in a consistent "deep copy"-style
- # fashion. That is, we want to make sure that each instance is
- # cloned only once, and that if there are multiple references to
- # the same original object, we end up with the corresponding
- # cloned references all pointing to the same cloned instance.
- def __init__(self, **kwargs):
- ancestor = kwargs.get('_ancestor')
- memo_dict = kwargs.get('_memo')
- if memo_dict is None:
- # prepare to memoize any recursively instantiated objects
- memo_dict = {}
- elif ancestor:
- # memoize me now to avoid problems with recursive calls
- memo_dict[ancestor] = self
-
- if not ancestor:
- ancestor = self.__class__
- ancestor._instantiated = True
-
- # initialize required attributes
- self._parent = None
- self._children = {}
- self._ccObject = None # pointer to C++ object
- self._instantiated = False # really "cloned"
-
- # Inherit parameter values from class using multidict so
- # individual value settings can be overridden.
- self._values = multidict(ancestor._values)
- # clone SimObject-valued parameters
- for key,val in ancestor._values.iteritems():
- if isSimObject(val):
- setattr(self, key, val(_memo=memo_dict))
- elif isSimObjectSequence(val) and len(val):
- setattr(self, key, [ v(_memo=memo_dict) for v in val ])
- # clone port references. no need to use a multidict here
- # since we will be creating new references for all ports.
- self._port_map = {}
- for key,val in ancestor._port_map.iteritems():
- self._port_map[key] = applyOrMap(val, 'clone', memo_dict)
- # apply attribute assignments from keyword args, if any
- for key,val in kwargs.iteritems():
- setattr(self, key, val)
-
- # "Clone" the current instance by creating another instance of
- # this instance's class, but that inherits its parameter values
- # and port mappings from the current instance. If we're in a
- # "deep copy" recursive clone, check the _memo dict to see if
- # we've already cloned this instance.
- def __call__(self, **kwargs):
- memo_dict = kwargs.get('_memo')
- if memo_dict is None:
- # no memo_dict: must be top-level clone operation.
- # this is only allowed at the root of a hierarchy
- if self._parent:
- raise RuntimeError, "attempt to clone object %s " \
- "not at the root of a tree (parent = %s)" \
- % (self, self._parent)
- # create a new dict and use that.
- memo_dict = {}
- kwargs['_memo'] = memo_dict
- elif memo_dict.has_key(self):
- # clone already done & memoized
- return memo_dict[self]
- return self.__class__(_ancestor = self, **kwargs)
-
- def __getattr__(self, attr):
- if self._ports.has_key(attr):
- # return reference that can be assigned to another port
- # via __setattr__
- return self._ports[attr].makeRef(self, attr)
-
- if self._values.has_key(attr):
- return self._values[attr]
-
- raise AttributeError, "object '%s' has no attribute '%s'" \
- % (self.__class__.__name__, attr)
-
- # Set attribute (called on foo.attr = value when foo is an
- # instance of class cls).
- def __setattr__(self, attr, value):
- # normal processing for private attributes
- if attr.startswith('_'):
- object.__setattr__(self, attr, value)
- return
-
- if self._ports.has_key(attr):
- # set up port connection
- self._ports[attr].connect(self, attr, value)
- return
-
- if isSimObjectOrSequence(value) and self._instantiated:
- raise RuntimeError, \
- "cannot set SimObject parameter '%s' after\n" \
- " instance been cloned %s" % (attr, `self`)
-
- # must be SimObject param
- param = self._params.get(attr, None)
- if param:
- try:
- value = param.convert(value)
- except Exception, e:
- msg = "%s\nError setting param %s.%s to %s\n" % \
- (e, self.__class__.__name__, attr, value)
- e.args = (msg, )
- raise
- elif isSimObjectOrSequence(value):
- pass
- else:
- raise AttributeError, "Class %s has no parameter %s" \
- % (self.__class__.__name__, attr)
-
- # clear out old child with this name, if any
- self.clear_child(attr)
-
- if isSimObject(value):
- value.set_path(self, attr)
- elif isSimObjectSequence(value):
- value = SimObjVector(value)
- [v.set_path(self, "%s%d" % (attr, i)) for i,v in enumerate(value)]
-
- self._values[attr] = value
-
- # this hack allows tacking a '[0]' onto parameters that may or may
- # not be vectors, and always getting the first element (e.g. cpus)
- def __getitem__(self, key):
- if key == 0:
- return self
- raise TypeError, "Non-zero index '%s' to SimObject" % key
-
- # clear out children with given name, even if it's a vector
- def clear_child(self, name):
- if not self._children.has_key(name):
- return
- child = self._children[name]
- if isinstance(child, SimObjVector):
- for i in xrange(len(child)):
- del self._children["s%d" % (name, i)]
- del self._children[name]
-
- def add_child(self, name, value):
- self._children[name] = value
-
- def set_path(self, parent, name):
- if not self._parent:
- self._parent = parent
- self._name = name
- parent.add_child(name, self)
-
- def path(self):
- if not self._parent:
- return 'root'
- ppath = self._parent.path()
- if ppath == 'root':
- return self._name
- return ppath + "." + self._name
-
- def __str__(self):
- return self.path()
-
- def ini_str(self):
- return self.path()
-
- def find_any(self, ptype):
- if isinstance(self, ptype):
- return self, True
-
- found_obj = None
- for child in self._children.itervalues():
- if isinstance(child, ptype):
- if found_obj != None and child != found_obj:
- raise AttributeError, \
- 'parent.any matched more than one: %s %s' % \
- (found_obj.path, child.path)
- found_obj = child
- # search param space
- for pname,pdesc in self._params.iteritems():
- if issubclass(pdesc.ptype, ptype):
- match_obj = self._values[pname]
- if found_obj != None and found_obj != match_obj:
- raise AttributeError, \
- 'parent.any matched more than one: %s' % obj.path
- found_obj = match_obj
- return found_obj, found_obj != None
-
- def unproxy(self, base):
- return self
-
- def print_ini(self):
- print '[' + self.path() + ']' # .ini section header
-
- instanceDict[self.path()] = self
-
- if hasattr(self, 'type') and not isinstance(self, ParamContext):
- print 'type=%s' % self.type
-
- child_names = self._children.keys()
- child_names.sort()
- np_child_names = [c for c in child_names \
- if not isinstance(self._children[c], ParamContext)]
- if len(np_child_names):
- print 'children=%s' % ' '.join(np_child_names)
-
- param_names = self._params.keys()
- param_names.sort()
- for param in param_names:
- value = self._values.get(param, None)
- if value != None:
- if isproxy(value):
- try:
- value = value.unproxy(self)
- except:
- print >> sys.stderr, \
- "Error in unproxying param '%s' of %s" % \
- (param, self.path())
- raise
- setattr(self, param, value)
- print '%s=%s' % (param, self._values[param].ini_str())
-
- print # blank line between objects
-
- for child in child_names:
- self._children[child].print_ini()
-
- # Call C++ to create C++ object corresponding to this object and
- # (recursively) all its children
- def createCCObject(self):
- self.getCCObject() # force creation
- for child in self._children.itervalues():
- child.createCCObject()
-
- # Get C++ object corresponding to this object, calling C++ if
- # necessary to construct it. Does *not* recursively create
- # children.
- def getCCObject(self):
- if not self._ccObject:
- self._ccObject = -1 # flag to catch cycles in recursion
- self._ccObject = cc_main.createSimObject(self.path())
- elif self._ccObject == -1:
- raise RuntimeError, "%s: recursive call to getCCObject()" \
- % self.path()
- return self._ccObject
-
- # Create C++ port connections corresponding to the connections in
- # _port_map (& recursively for all children)
- def connectPorts(self):
- for portRef in self._port_map.itervalues():
- applyOrMap(portRef, 'ccConnect')
- for child in self._children.itervalues():
- child.connectPorts()
-
- def startQuiesce(self, quiesce_event, recursive):
- count = 0
- # ParamContexts don't serialize
- if isinstance(self, SimObject) and not isinstance(self, ParamContext):
- if self._ccObject.quiesce(quiesce_event):
- count = 1
- if recursive:
- for child in self._children.itervalues():
- count += child.startQuiesce(quiesce_event, True)
- return count
-
- def resume(self):
- if isinstance(self, SimObject) and not isinstance(self, ParamContext):
- self._ccObject.resume()
- for child in self._children.itervalues():
- child.resume()
-
- def changeTiming(self, mode):
- if isinstance(self, SimObject) and not isinstance(self, ParamContext):
- self._ccObject.setMemoryMode(mode)
- for child in self._children.itervalues():
- child.changeTiming(mode)
-
- def takeOverFrom(self, old_cpu):
- cpu_ptr = cc_main.convertToBaseCPUPtr(old_cpu._ccObject)
- self._ccObject.takeOverFrom(cpu_ptr)
-
- # generate output file for 'dot' to display as a pretty graph.
- # this code is currently broken.
- def outputDot(self, dot):
- label = "{%s|" % self.path
- if isSimObject(self.realtype):
- label += '%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).
- for c in self.children:
- dot.add_edge(pydot.Edge(self.path,c.path, style="bold"))
-
- simobjs = []
- for param in self.params:
- try:
- if param.value is None:
- raise AttributeError, 'Parameter with no value'
-
- value = param.value
- string = param.string(value)
- except Exception, e:
- msg = 'exception in %s:%s\n%s' % (self.name, param.name, e)
- e.args = (msg, )
- raise
-
- if isSimObject(param.ptype) and string != "Null":
- simobjs.append(string)
- else:
- label += '%s = %s\\n' % (param.name, string)
-
- for so in simobjs:
- label += "|<%s> %s" % (so, so)
- dot.add_edge(pydot.Edge("%s:%s" % (self.path, so), so,
- tailport="w"))
- label += '}'
- dot.add_node(pydot.Node(self.path,shape="Mrecord",label=label))
-
- # recursively dump out children
- for c in self.children:
- c.outputDot(dot)
-
-class ParamContext(SimObject):
- pass
-
-#####################################################################
-#
-# Proxy object support.
-#
-#####################################################################
-
-class BaseProxy(object):
- def __init__(self, search_self, search_up):
- self._search_self = search_self
- self._search_up = search_up
- self._multiplier = None
-
- def __setattr__(self, attr, value):
- if not attr.startswith('_'):
- raise AttributeError, 'cannot set attribute on proxy object'
- super(BaseProxy, self).__setattr__(attr, value)
-
- # support multiplying proxies by constants
- def __mul__(self, other):
- if not isinstance(other, (int, long, float)):
- raise TypeError, "Proxy multiplier must be integer"
- if self._multiplier == None:
- self._multiplier = other
- else:
- # support chained multipliers
- self._multiplier *= other
- return self
-
- __rmul__ = __mul__
-
- def _mulcheck(self, result):
- if self._multiplier == None:
- return result
- return result * self._multiplier
-
- def unproxy(self, base):
- obj = base
- done = False
-
- if self._search_self:
- result, done = self.find(obj)
-
- if self._search_up:
- while not done:
- obj = obj._parent
- if not obj:
- break
- result, done = self.find(obj)
-
- if not done:
- raise AttributeError, "Can't resolve proxy '%s' from '%s'" % \
- (self.path(), base.path())
-
- if isinstance(result, BaseProxy):
- if result == self:
- raise RuntimeError, "Cycle in unproxy"
- result = result.unproxy(obj)
-
- return self._mulcheck(result)
-
- def getindex(obj, index):
- if index == None:
- return obj
- try:
- obj = obj[index]
- except TypeError:
- if index != 0:
- raise
- # if index is 0 and item is not subscriptable, just
- # use item itself (so cpu[0] works on uniprocessors)
- return obj
- getindex = staticmethod(getindex)
-
- def set_param_desc(self, pdesc):
- self._pdesc = pdesc
-
-class AttrProxy(BaseProxy):
- def __init__(self, search_self, search_up, attr):
- super(AttrProxy, self).__init__(search_self, search_up)
- self._attr = attr
- self._modifiers = []
-
- def __getattr__(self, attr):
- # python uses __bases__ internally for inheritance
- if attr.startswith('_'):
- return super(AttrProxy, self).__getattr__(self, attr)
- if hasattr(self, '_pdesc'):
- raise AttributeError, "Attribute reference on bound proxy"
- self._modifiers.append(attr)
- return self
-
- # support indexing on proxies (e.g., Self.cpu[0])
- def __getitem__(self, key):
- if not isinstance(key, int):
- raise TypeError, "Proxy object requires integer index"
- self._modifiers.append(key)
- return self
-
- def find(self, obj):
- try:
- val = getattr(obj, self._attr)
- except:
- return None, False
- while isproxy(val):
- val = val.unproxy(obj)
- for m in self._modifiers:
- if isinstance(m, str):
- val = getattr(val, m)
- elif isinstance(m, int):
- val = val[m]
- else:
- assert("Item must be string or integer")
- while isproxy(val):
- val = val.unproxy(obj)
- return val, True
-
- def path(self):
- p = self._attr
- for m in self._modifiers:
- if isinstance(m, str):
- p += '.%s' % m
- elif isinstance(m, int):
- p += '[%d]' % m
- else:
- assert("Item must be string or integer")
- return p
-
-class AnyProxy(BaseProxy):
- def find(self, obj):
- return obj.find_any(self._pdesc.ptype)
-
- def path(self):
- return 'any'
-
-def isproxy(obj):
- if isinstance(obj, (BaseProxy, EthernetAddr)):
- return True
- elif isinstance(obj, (list, tuple)):
- for v in obj:
- if isproxy(v):
- return True
- return False
-
-class ProxyFactory(object):
- def __init__(self, search_self, search_up):
- self.search_self = search_self
- self.search_up = search_up
-
- def __getattr__(self, attr):
- if attr == 'any':
- return AnyProxy(self.search_self, self.search_up)
- else:
- return AttrProxy(self.search_self, self.search_up, attr)
-
-# global objects for handling proxies
-Parent = ProxyFactory(search_self = False, search_up = True)
-Self = ProxyFactory(search_self = True, search_up = False)
-
-#####################################################################
-#
-# 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 (if any). 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
-# MetaSimObject._new_param()); after that point they aren't used.
-#
-#####################################################################
-
-# Dummy base class to identify types that are legitimate for SimObject
-# parameters.
-class ParamValue(object):
-
- # default for printing to .ini file is regular string conversion.
- # will be overridden in some cases
- def ini_str(self):
- return str(self)
-
- # allows us to blithely call unproxy() on things without checking
- # if they're really proxies or not
- def unproxy(self, base):
- return self
-
-# Regular parameter description.
-class ParamDesc(object):
- def __init__(self, ptype_str, ptype, *args, **kwargs):
- self.ptype_str = ptype_str
- # remember ptype only if it is provided
- if ptype != None:
- 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 __getattr__(self, attr):
- if attr == 'ptype':
- try:
- ptype = eval(self.ptype_str, m5.objects.__dict__)
- if not isinstance(ptype, type):
- panic("Param qualifier is not a type: %s" % self.ptype)
- self.ptype = ptype
- return ptype
- except NameError:
- pass
- raise AttributeError, "'%s' object has no attribute '%s'" % \
- (type(self).__name__, attr)
-
- def convert(self, value):
- if isinstance(value, BaseProxy):
- value.set_param_desc(self)
- return value
- if not hasattr(self, 'ptype') and isNullPointer(value):
- # deferred evaluation of SimObject; continue to defer if
- # we're just assigning a null pointer
- return value
- if isinstance(value, self.ptype):
- return value
- if isNullPointer(value) and issubclass(self.ptype, SimObject):
- return value
- return self.ptype(value)
-
-# Vector-valued parameter description. Just like ParamDesc, except
-# that the value is a vector (list) of the specified type instead of a
-# single value.
-
-class VectorParamValue(list):
- def ini_str(self):
- return ' '.join([v.ini_str() for v in self])
-
- def unproxy(self, base):
- return [v.unproxy(base) for v in self]
-
-class SimObjVector(VectorParamValue):
- def print_ini(self):
- for v in self:
- v.print_ini()
-
-class VectorParamDesc(ParamDesc):
- # 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 isinstance(value, (list, tuple)):
- # list: coerce each element into new list
- tmp_list = [ ParamDesc.convert(self, v) for v in value ]
- if isSimObjectSequence(tmp_list):
- return SimObjVector(tmp_list)
- else:
- return VectorParamValue(tmp_list)
- else:
- # singleton: leave it be (could coerce to a single-element
- # list here, but for some historical reason we don't...
- return ParamDesc.convert(self, value)
-
-
-class ParamFactory(object):
- def __init__(self, param_desc_class, ptype_str = None):
- self.param_desc_class = param_desc_class
- self.ptype_str = ptype_str
-
- def __getattr__(self, attr):
- if self.ptype_str:
- attr = self.ptype_str + '.' + attr
- return ParamFactory(self.param_desc_class, attr)
-
- # E.g., Param.Int(5, "number of widgets")
- def __call__(self, *args, **kwargs):
- caller_frame = inspect.currentframe().f_back
- ptype = None
- try:
- ptype = eval(self.ptype_str,
- caller_frame.f_globals, caller_frame.f_locals)
- if not isinstance(ptype, type):
- raise TypeError, \
- "Param qualifier is not a type: %s" % ptype
- except NameError:
- # if name isn't defined yet, assume it's a SimObject, and
- # try to resolve it later
- pass
- return self.param_desc_class(self.ptype_str, ptype, *args, **kwargs)
-
-Param = ParamFactory(ParamDesc)
-VectorParam = ParamFactory(VectorParamDesc)
-
-#####################################################################
-#
-# 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.
-#
-#####################################################################
-
-# superclass for "numeric" parameter values, to emulate math
-# operations in a type-safe way. e.g., a Latency times an int returns
-# a new Latency object.
-class NumericParamValue(ParamValue):
- def __str__(self):
- return str(self.value)
-
- def __float__(self):
- return float(self.value)
-
- # hook for bounds checking
- def _check(self):
- return
-
- def __mul__(self, other):
- newobj = self.__class__(self)
- newobj.value *= other
- newobj._check()
- return newobj
-
- __rmul__ = __mul__
-
- def __div__(self, other):
- newobj = self.__class__(self)
- newobj.value /= other
- newobj._check()
- return newobj
-
- def __sub__(self, other):
- newobj = self.__class__(self)
- newobj.value -= other
- newobj._check()
- return newobj
-
-class Range(ParamValue):
- 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'))
- elif 'size' in kwargs:
- self.second = self.first + self.type(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'))
- handle_kwargs(self, kwargs)
-
- elif len(args) == 1:
- if kwargs:
- self.first = self.type(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)
- else:
- self.first = self.type(0)
- self.second = self.type(args[0]) - 1
-
- elif len(args) == 2:
- self.first = self.type(args[0])
- self.second = self.type(args[1])
- else:
- raise TypeError, "Too many arguments specified"
-
- if kwargs:
- raise TypeError, "too many keywords: %s" % kwargs.keys()
-
- def __str__(self):
- return '%s:%s' % (self.first, self.second)
-
-# Metaclass for bounds-checked integer parameters. See CheckedInt.
-class CheckedIntType(type):
- def __init__(cls, name, bases, dict):
- super(CheckedIntType, cls).__init__(name, bases, dict)
-
- # CheckedInt is an abstract base class, so we actually don't
- # want to do any processing on it... the rest of this code is
- # just for classes that derive from CheckedInt.
- if name == 'CheckedInt':
- return
-
- if not (hasattr(cls, 'min') and hasattr(cls, 'max')):
- if not (hasattr(cls, 'size') and hasattr(cls, 'unsigned')):
- panic("CheckedInt subclass %s must define either\n" \
- " 'min' and 'max' or 'size' and 'unsigned'\n" \
- % name);
- if cls.unsigned:
- cls.min = 0
- cls.max = 2 ** cls.size - 1
- else:
- cls.min = -(2 ** (cls.size - 1))
- cls.max = (2 ** (cls.size - 1)) - 1
-
-# Abstract superclass for bounds-checked integer parameters. This
-# class is subclassed to generate parameter classes with specific
-# bounds. Initialization of the min and max bounds is done in the
-# metaclass CheckedIntType.__init__.
-class CheckedInt(NumericParamValue):
- __metaclass__ = CheckedIntType
-
- def _check(self):
- if not self.min <= self.value <= self.max:
- raise TypeError, 'Integer param out of bounds %d < %d < %d' % \
- (self.min, self.value, self.max)
-
- def __init__(self, value):
- if isinstance(value, str):
- self.value = toInteger(value)
- elif isinstance(value, (int, long, float)):
- self.value = long(value)
- self._check()
-
-class Int(CheckedInt): size = 32; unsigned = False
-class Unsigned(CheckedInt): size = 32; unsigned = True
-
-class Int8(CheckedInt): size = 8; unsigned = False
-class UInt8(CheckedInt): size = 8; unsigned = True
-class Int16(CheckedInt): size = 16; unsigned = False
-class UInt16(CheckedInt): size = 16; unsigned = True
-class Int32(CheckedInt): size = 32; unsigned = False
-class UInt32(CheckedInt): size = 32; unsigned = True
-class Int64(CheckedInt): size = 64; unsigned = False
-class UInt64(CheckedInt): size = 64; unsigned = True
-
-class Counter(CheckedInt): size = 64; unsigned = True
-class Tick(CheckedInt): size = 64; unsigned = True
-class TcpPort(CheckedInt): size = 16; unsigned = True
-class UdpPort(CheckedInt): size = 16; unsigned = True
-
-class Percent(CheckedInt): min = 0; max = 100
-
-class Float(ParamValue, float):
- pass
-
-class MemorySize(CheckedInt):
- size = 64
- unsigned = True
- def __init__(self, value):
- if isinstance(value, MemorySize):
- self.value = value.value
- else:
- self.value = toMemorySize(value)
- self._check()
-
-class MemorySize32(CheckedInt):
- size = 32
- unsigned = True
- def __init__(self, value):
- if isinstance(value, MemorySize):
- self.value = value.value
- else:
- self.value = toMemorySize(value)
- self._check()
-
-class Addr(CheckedInt):
- size = 64
- unsigned = True
- def __init__(self, value):
- if isinstance(value, Addr):
- self.value = value.value
- else:
- try:
- self.value = toMemorySize(value)
- except TypeError:
- self.value = long(value)
- self._check()
-
-class AddrRange(Range):
- type = Addr
-
-# String-valued parameter. Just mixin the ParamValue class
-# with the built-in str class.
-class String(ParamValue,str):
- pass
-
-# Boolean parameter type. Python doesn't let you subclass bool, since
-# it doesn't want to let you create multiple instances of True and
-# False. Thus this is a little more complicated than String.
-class Bool(ParamValue):
- def __init__(self, value):
- try:
- self.value = toBool(value)
- except TypeError:
- self.value = bool(value)
-
- def __str__(self):
- return str(self.value)
-
- def ini_str(self):
- if self.value:
- return 'true'
- return 'false'
-
-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):
- addr = "00:90:00:00:00:01"
-
- def __init__(self, inc = 1):
- self.value = NextEthernetAddr.addr
- NextEthernetAddr.addr = IncEthernetAddr(NextEthernetAddr.addr, inc)
-
-class EthernetAddr(ParamValue):
- def __init__(self, value):
- if value == NextEthernetAddr:
- self.value = value
- return
-
- 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
-
- self.value = value
-
- def unproxy(self, base):
- if self.value == NextEthernetAddr:
- self.addr = self.value().value
- return self
-
- def __str__(self):
- if self.value == NextEthernetAddr:
- if hasattr(self, 'addr'):
- return self.addr
- else:
- return "NextEthernetAddr (unresolved)"
- else:
- return self.value
-
-# 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
-
- def __call__(cls):
- return cls
-
- def _instantiate(self, parent = None, path = ''):
- pass
-
- def ini_str(self):
- return 'Null'
-
- def unproxy(self, base):
- return self
-
- def set_path(self, parent, name):
- pass
- def __str__(self):
- return 'Null'
-
-# 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.
-
-
-# Metaclass for Enum types
-class MetaEnum(type):
- def __init__(cls, name, bases, init_dict):
- if init_dict.has_key('map'):
- if not isinstance(cls.map, dict):
- raise TypeError, "Enum-derived class attribute 'map' " \
- "must be of type dict"
- # build list of value strings from map
- cls.vals = cls.map.keys()
- cls.vals.sort()
- elif init_dict.has_key('vals'):
- if not isinstance(cls.vals, list):
- raise TypeError, "Enum-derived class attribute 'vals' " \
- "must be of type list"
- # build string->value map from vals sequence
- cls.map = {}
- for idx,val in enumerate(cls.vals):
- cls.map[val] = idx
- else:
- raise TypeError, "Enum-derived class must define "\
- "attribute 'map' or 'vals'"
-
- super(MetaEnum, cls).__init__(name, bases, init_dict)
-
- def cpp_declare(cls):
- s = 'enum %s {\n ' % cls.__name__
- s += ',\n '.join(['%s = %d' % (v,cls.map[v]) for v in cls.vals])
- s += '\n};\n'
- return s
-
-# Base class for enum types.
-class Enum(ParamValue):
- __metaclass__ = MetaEnum
- vals = []
-
- def __init__(self, value):
- if value not in self.map:
- raise TypeError, "Enum param got bad value '%s' (not in %s)" \
- % (value, self.vals)
- self.value = value
-
- def __str__(self):
- return self.value
-
-ticks_per_sec = None
-
-# how big does a rounding error need to be before we warn about it?
-frequency_tolerance = 0.001 # 0.1%
-
-# convert a floting-point # of ticks to integer, and warn if rounding
-# discards too much precision
-def tick_check(float_ticks):
- if float_ticks == 0:
- return 0
- int_ticks = int(round(float_ticks))
- err = (float_ticks - int_ticks) / float_ticks
- if err > frequency_tolerance:
- print >> sys.stderr, "Warning: rounding error > tolerance"
- print >> sys.stderr, " %f rounded to %d" % (float_ticks, int_ticks)
- #raise ValueError
- return int_ticks
-
-def getLatency(value):
- if isinstance(value, Latency) or isinstance(value, Clock):
- return value.value
- elif isinstance(value, Frequency) or isinstance(value, RootClock):
- return 1 / value.value
- elif isinstance(value, str):
- try:
- return toLatency(value)
- except ValueError:
- try:
- return 1 / toFrequency(value)
- except ValueError:
- pass # fall through
- raise ValueError, "Invalid Frequency/Latency value '%s'" % value
-
-
-class Latency(NumericParamValue):
- def __init__(self, value):
- self.value = getLatency(value)
-
- def __getattr__(self, attr):
- if attr in ('latency', 'period'):
- return self
- if attr == 'frequency':
- return Frequency(self)
- raise AttributeError, "Latency object has no attribute '%s'" % attr
-
- # convert latency to ticks
- def ini_str(self):
- return str(tick_check(self.value * ticks_per_sec))
-
-class Frequency(NumericParamValue):
- def __init__(self, value):
- self.value = 1 / getLatency(value)
-
- def __getattr__(self, attr):
- if attr == 'frequency':
- return self
- if attr in ('latency', 'period'):
- return Latency(self)
- raise AttributeError, "Frequency object has no attribute '%s'" % attr
-
- # convert frequency to ticks per period
- def ini_str(self):
- return self.period.ini_str()
-
-# Just like Frequency, except ini_str() is absolute # of ticks per sec (Hz).
-# We can't inherit from Frequency because we don't want it to be directly
-# assignable to a regular Frequency parameter.
-class RootClock(ParamValue):
- def __init__(self, value):
- self.value = 1 / getLatency(value)
-
- def __getattr__(self, attr):
- if attr == 'frequency':
- return Frequency(self)
- if attr in ('latency', 'period'):
- return Latency(self)
- raise AttributeError, "Frequency object has no attribute '%s'" % attr
-
- def ini_str(self):
- return str(tick_check(self.value))
-
-# A generic frequency and/or Latency value. Value is stored as a latency,
-# but to avoid ambiguity this object does not support numeric ops (* or /).
-# An explicit conversion to a Latency or Frequency must be made first.
-class Clock(ParamValue):
- def __init__(self, value):
- self.value = getLatency(value)
-
- def __getattr__(self, attr):
- if attr == 'frequency':
- return Frequency(self)
- if attr in ('latency', 'period'):
- return Latency(self)
- raise AttributeError, "Frequency object has no attribute '%s'" % attr
-
- def ini_str(self):
- return self.period.ini_str()
-
-class NetworkBandwidth(float,ParamValue):
- def __new__(cls, value):
- val = toNetworkBandwidth(value) / 8.0
- return super(cls, NetworkBandwidth).__new__(cls, val)
-
- def __str__(self):
- return str(self.val)
-
- def ini_str(self):
- return '%f' % (ticks_per_sec / float(self))
-
-class MemoryBandwidth(float,ParamValue):
- def __new__(self, value):
- val = toMemoryBandwidth(value)
- return super(cls, MemoryBandwidth).__new__(cls, val)
-
- def __str__(self):
- return str(self.val)
-
- def ini_str(self):
- return '%f' % (ticks_per_sec / float(self))
-
-#
-# "Constants"... handy aliases for various values.
-#
-
-# Some memory range specifications use this as a default upper bound.
-MaxAddr = Addr.max
-MaxTick = Tick.max
-AllMemory = AddrRange(0, MaxAddr)
-
-
-#####################################################################
-#
-# Port objects
-#
-# Ports are used to interconnect objects in the memory system.
-#
-#####################################################################
-
-# Port reference: encapsulates a reference to a particular port on a
-# particular SimObject.
-class PortRef(object):
- def __init__(self, simobj, name, isVec):
- assert(isSimObject(simobj))
- self.simobj = simobj
- self.name = name
- self.index = -1
- self.isVec = isVec # is this a vector port?
- self.peer = None # not associated with another port yet
- self.ccConnected = False # C++ port connection done?
-
- # Set peer port reference. Called via __setattr__ as a result of
- # a port assignment, e.g., "obj1.port1 = obj2.port2".
- def setPeer(self, other):
- if self.isVec:
- curMap = self.simobj._port_map.get(self.name, [])
- self.index = len(curMap)
- curMap.append(other)
- else:
- curMap = self.simobj._port_map.get(self.name)
- if curMap and not self.isVec:
- print "warning: overwriting port", self.simobj, self.name
- curMap = other
- self.simobj._port_map[self.name] = curMap
- self.peer = other
-
- def clone(self, memo):
- newRef = copy.copy(self)
- assert(isSimObject(newRef.simobj))
- newRef.simobj = newRef.simobj(_memo=memo)
- # Tricky: if I'm the *second* PortRef in the pair to be
- # cloned, then my peer is still in the middle of its clone
- # method, and thus hasn't returned to its owner's
- # SimObject.__init__ to get installed in _port_map. As a
- # result I have no way of finding the *new* peer object. So I
- # mark myself as "waiting" for my peer, and I let the *first*
- # PortRef clone call set up both peer pointers after I return.
- newPeer = newRef.simobj._port_map.get(self.name)
- if newPeer:
- if self.isVec:
- assert(self.index != -1)
- newPeer = newPeer[self.index]
- # other guy is all set up except for his peer pointer
- assert(newPeer.peer == -1) # peer must be waiting for handshake
- newPeer.peer = newRef
- newRef.peer = newPeer
- else:
- # other guy is in clone; just wait for him to do the work
- newRef.peer = -1 # mark as waiting for handshake
- return newRef
-
- # Call C++ to create corresponding port connection between C++ objects
- def ccConnect(self):
- if self.ccConnected: # already done this
- return
- peer = self.peer
- cc_main.connectPorts(self.simobj.getCCObject(), self.name, self.index,
- peer.simobj.getCCObject(), peer.name, peer.index)
- self.ccConnected = True
- peer.ccConnected = True
-
-# Port description object. Like a ParamDesc object, this represents a
-# logical port in the SimObject class, not a particular port on a
-# SimObject instance. The latter are represented by PortRef objects.
-class Port(object):
- def __init__(self, desc):
- self.desc = desc
- self.isVec = False
-
- # Generate a PortRef for this port on the given SimObject with the
- # given name
- def makeRef(self, simobj, name):
- return PortRef(simobj, name, self.isVec)
-
- # Connect an instance of this port (on the given SimObject with
- # the given name) with the port described by the supplied PortRef
- def connect(self, simobj, name, ref):
- if not isinstance(ref, PortRef):
- raise TypeError, \
- "assigning non-port reference port '%s'" % name
- myRef = self.makeRef(simobj, name)
- myRef.setPeer(ref)
- ref.setPeer(myRef)
-
-# VectorPort description object. Like Port, but represents a vector
-# of connections (e.g., as on a Bus).
-class VectorPort(Port):
- def __init__(self, desc):
- Port.__init__(self, desc)
- self.isVec = True
-
-#####################################################################
-
-# __all__ defines the list of symbols that get exported when
-# 'from config import *' is invoked. Try to keep this reasonably
-# short to avoid polluting other namespaces.
-__all__ = ['SimObject', 'ParamContext', 'Param', 'VectorParam',
- 'Parent', 'Self',
- 'Enum', 'Bool', 'String', 'Float',
- 'Int', 'Unsigned', 'Int8', 'UInt8', 'Int16', 'UInt16',
- 'Int32', 'UInt32', 'Int64', 'UInt64',
- 'Counter', 'Addr', 'Tick', 'Percent',
- 'TcpPort', 'UdpPort', 'EthernetAddr',
- 'MemorySize', 'MemorySize32',
- 'Latency', 'Frequency', 'RootClock', 'Clock',
- 'NetworkBandwidth', 'MemoryBandwidth',
- 'Range', 'AddrRange', 'MaxAddr', 'MaxTick', 'AllMemory',
- 'Null', 'NULL',
- 'NextEthernetAddr',
- 'Port', 'VectorPort']
+ return conffile