config.py revision 2763:c3741c707d53
1# Copyright (c) 2004-2006 The Regents of The University of Michigan 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer; 8# redistributions in binary form must reproduce the above copyright 9# notice, this list of conditions and the following disclaimer in the 10# documentation and/or other materials provided with the distribution; 11# neither the name of the copyright holders nor the names of its 12# contributors may be used to endorse or promote products derived from 13# this software without specific prior written permission. 14# 15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# Authors: Steve Reinhardt 28# Nathan Binkert 29 30import os, re, sys, types, inspect, copy 31 32import m5 33from m5 import panic, cc_main 34from convert import * 35from multidict import multidict 36 37noDot = False 38try: 39 import pydot 40except: 41 noDot = True 42 43class Singleton(type): 44 def __call__(cls, *args, **kwargs): 45 if hasattr(cls, '_instance'): 46 return cls._instance 47 48 cls._instance = super(Singleton, cls).__call__(*args, **kwargs) 49 return cls._instance 50 51##################################################################### 52# 53# M5 Python Configuration Utility 54# 55# The basic idea is to write simple Python programs that build Python 56# objects corresponding to M5 SimObjects for the desired simulation 57# configuration. For now, the Python emits a .ini file that can be 58# parsed by M5. In the future, some tighter integration between M5 59# and the Python interpreter may allow bypassing the .ini file. 60# 61# Each SimObject class in M5 is represented by a Python class with the 62# same name. The Python inheritance tree mirrors the M5 C++ tree 63# (e.g., SimpleCPU derives from BaseCPU in both cases, and all 64# SimObjects inherit from a single SimObject base class). To specify 65# an instance of an M5 SimObject in a configuration, the user simply 66# instantiates the corresponding Python object. The parameters for 67# that SimObject are given by assigning to attributes of the Python 68# object, either using keyword assignment in the constructor or in 69# separate assignment statements. For example: 70# 71# cache = BaseCache(size='64KB') 72# cache.hit_latency = 3 73# cache.assoc = 8 74# 75# The magic lies in the mapping of the Python attributes for SimObject 76# classes to the actual SimObject parameter specifications. This 77# allows parameter validity checking in the Python code. Continuing 78# the example above, the statements "cache.blurfl=3" or 79# "cache.assoc='hello'" would both result in runtime errors in Python, 80# since the BaseCache object has no 'blurfl' parameter and the 'assoc' 81# parameter requires an integer, respectively. This magic is done 82# primarily by overriding the special __setattr__ method that controls 83# assignment to object attributes. 84# 85# Once a set of Python objects have been instantiated in a hierarchy, 86# calling 'instantiate(obj)' (where obj is the root of the hierarchy) 87# will generate a .ini file. 88# 89##################################################################### 90 91# dict to look up SimObjects based on path 92instanceDict = {} 93 94############################# 95# 96# Utility methods 97# 98############################# 99 100def isSimObject(value): 101 return isinstance(value, SimObject) 102 103def isSimObjectSequence(value): 104 if not isinstance(value, (list, tuple)) or len(value) == 0: 105 return False 106 107 for val in value: 108 if not isNullPointer(val) and not isSimObject(val): 109 return False 110 111 return True 112 113def isSimObjectOrSequence(value): 114 return isSimObject(value) or isSimObjectSequence(value) 115 116def isNullPointer(value): 117 return isinstance(value, NullSimObject) 118 119# Apply method to object. 120# applyMethod(obj, 'meth', <args>) is equivalent to obj.meth(<args>) 121def applyMethod(obj, meth, *args, **kwargs): 122 return getattr(obj, meth)(*args, **kwargs) 123 124# If the first argument is an (non-sequence) object, apply the named 125# method with the given arguments. If the first argument is a 126# sequence, apply the method to each element of the sequence (a la 127# 'map'). 128def applyOrMap(objOrSeq, meth, *args, **kwargs): 129 if not isinstance(objOrSeq, (list, tuple)): 130 return applyMethod(objOrSeq, meth, *args, **kwargs) 131 else: 132 return [applyMethod(o, meth, *args, **kwargs) for o in objOrSeq] 133 134 135# The metaclass for SimObject. This class controls how new classes 136# that derive from SimObject are instantiated, and provides inherited 137# class behavior (just like a class controls how instances of that 138# class are instantiated, and provides inherited instance behavior). 139class MetaSimObject(type): 140 # Attributes that can be set only at initialization time 141 init_keywords = { 'abstract' : types.BooleanType, 142 'type' : types.StringType } 143 # Attributes that can be set any time 144 keywords = { 'check' : types.FunctionType } 145 146 # __new__ is called before __init__, and is where the statements 147 # in the body of the class definition get loaded into the class's 148 # __dict__. We intercept this to filter out parameter & port assignments 149 # and only allow "private" attributes to be passed to the base 150 # __new__ (starting with underscore). 151 def __new__(mcls, name, bases, dict): 152 # Copy "private" attributes, functions, and classes to the 153 # official dict. Everything else goes in _init_dict to be 154 # filtered in __init__. 155 cls_dict = {} 156 value_dict = {} 157 for key,val in dict.items(): 158 if key.startswith('_') or isinstance(val, (types.FunctionType, 159 types.TypeType)): 160 cls_dict[key] = val 161 else: 162 # must be a param/port setting 163 value_dict[key] = val 164 cls_dict['_value_dict'] = value_dict 165 return super(MetaSimObject, mcls).__new__(mcls, name, bases, cls_dict) 166 167 # subclass initialization 168 def __init__(cls, name, bases, dict): 169 # calls type.__init__()... I think that's a no-op, but leave 170 # it here just in case it's not. 171 super(MetaSimObject, cls).__init__(name, bases, dict) 172 173 # initialize required attributes 174 175 # class-only attributes 176 cls._params = multidict() # param descriptions 177 cls._ports = multidict() # port descriptions 178 179 # class or instance attributes 180 cls._values = multidict() # param values 181 cls._port_map = multidict() # port bindings 182 cls._instantiated = False # really instantiated, cloned, or subclassed 183 184 # We don't support multiple inheritance. If you want to, you 185 # must fix multidict to deal with it properly. 186 if len(bases) > 1: 187 raise TypeError, "SimObjects do not support multiple inheritance" 188 189 base = bases[0] 190 191 # Set up general inheritance via multidicts. A subclass will 192 # inherit all its settings from the base class. The only time 193 # the following is not true is when we define the SimObject 194 # class itself (in which case the multidicts have no parent). 195 if isinstance(base, MetaSimObject): 196 cls._params.parent = base._params 197 cls._ports.parent = base._ports 198 cls._values.parent = base._values 199 cls._port_map.parent = base._port_map 200 # mark base as having been subclassed 201 base._instantiated = True 202 203 # Now process the _value_dict items. They could be defining 204 # new (or overriding existing) parameters or ports, setting 205 # class keywords (e.g., 'abstract'), or setting parameter 206 # values or port bindings. The first 3 can only be set when 207 # the class is defined, so we handle them here. The others 208 # can be set later too, so just emulate that by calling 209 # setattr(). 210 for key,val in cls._value_dict.items(): 211 # param descriptions 212 if isinstance(val, ParamDesc): 213 cls._new_param(key, val) 214 215 # port objects 216 elif isinstance(val, Port): 217 cls._ports[key] = val 218 219 # init-time-only keywords 220 elif cls.init_keywords.has_key(key): 221 cls._set_keyword(key, val, cls.init_keywords[key]) 222 223 # default: use normal path (ends up in __setattr__) 224 else: 225 setattr(cls, key, val) 226 227 def _set_keyword(cls, keyword, val, kwtype): 228 if not isinstance(val, kwtype): 229 raise TypeError, 'keyword %s has bad type %s (expecting %s)' % \ 230 (keyword, type(val), kwtype) 231 if isinstance(val, types.FunctionType): 232 val = classmethod(val) 233 type.__setattr__(cls, keyword, val) 234 235 def _new_param(cls, name, value): 236 cls._params[name] = value 237 if hasattr(value, 'default'): 238 setattr(cls, name, value.default) 239 240 # Set attribute (called on foo.attr = value when foo is an 241 # instance of class cls). 242 def __setattr__(cls, attr, value): 243 # normal processing for private attributes 244 if attr.startswith('_'): 245 type.__setattr__(cls, attr, value) 246 return 247 248 if cls.keywords.has_key(attr): 249 cls._set_keyword(attr, value, cls.keywords[attr]) 250 return 251 252 if cls._ports.has_key(attr): 253 self._ports[attr].connect(self, attr, value) 254 return 255 256 if isSimObjectOrSequence(value) and cls._instantiated: 257 raise RuntimeError, \ 258 "cannot set SimObject parameter '%s' after\n" \ 259 " class %s has been instantiated or subclassed" \ 260 % (attr, cls.__name__) 261 262 # check for param 263 param = cls._params.get(attr, None) 264 if param: 265 try: 266 cls._values[attr] = param.convert(value) 267 except Exception, e: 268 msg = "%s\nError setting param %s.%s to %s\n" % \ 269 (e, cls.__name__, attr, value) 270 e.args = (msg, ) 271 raise 272 elif isSimObjectOrSequence(value): 273 # if RHS is a SimObject, it's an implicit child assignment 274 cls._values[attr] = value 275 else: 276 raise AttributeError, \ 277 "Class %s has no parameter %s" % (cls.__name__, attr) 278 279 def __getattr__(cls, attr): 280 if cls._values.has_key(attr): 281 return cls._values[attr] 282 283 raise AttributeError, \ 284 "object '%s' has no attribute '%s'" % (cls.__name__, attr) 285 286# The SimObject class is the root of the special hierarchy. Most of 287# the code in this class deals with the configuration hierarchy itself 288# (parent/child node relationships). 289class SimObject(object): 290 # Specify metaclass. Any class inheriting from SimObject will 291 # get this metaclass. 292 __metaclass__ = MetaSimObject 293 294 # Initialize new instance. For objects with SimObject-valued 295 # children, we need to recursively clone the classes represented 296 # by those param values as well in a consistent "deep copy"-style 297 # fashion. That is, we want to make sure that each instance is 298 # cloned only once, and that if there are multiple references to 299 # the same original object, we end up with the corresponding 300 # cloned references all pointing to the same cloned instance. 301 def __init__(self, **kwargs): 302 ancestor = kwargs.get('_ancestor') 303 memo_dict = kwargs.get('_memo') 304 if memo_dict is None: 305 # prepare to memoize any recursively instantiated objects 306 memo_dict = {} 307 elif ancestor: 308 # memoize me now to avoid problems with recursive calls 309 memo_dict[ancestor] = self 310 311 if not ancestor: 312 ancestor = self.__class__ 313 ancestor._instantiated = True 314 315 # initialize required attributes 316 self._parent = None 317 self._children = {} 318 self._ccObject = None # pointer to C++ object 319 self._instantiated = False # really "cloned" 320 321 # Inherit parameter values from class using multidict so 322 # individual value settings can be overridden. 323 self._values = multidict(ancestor._values) 324 # clone SimObject-valued parameters 325 for key,val in ancestor._values.iteritems(): 326 if isSimObject(val): 327 setattr(self, key, val(_memo=memo_dict)) 328 elif isSimObjectSequence(val) and len(val): 329 setattr(self, key, [ v(_memo=memo_dict) for v in val ]) 330 # clone port references. no need to use a multidict here 331 # since we will be creating new references for all ports. 332 self._port_map = {} 333 for key,val in ancestor._port_map.iteritems(): 334 self._port_map[key] = applyOrMap(val, 'clone', memo_dict) 335 # apply attribute assignments from keyword args, if any 336 for key,val in kwargs.iteritems(): 337 setattr(self, key, val) 338 339 # "Clone" the current instance by creating another instance of 340 # this instance's class, but that inherits its parameter values 341 # and port mappings from the current instance. If we're in a 342 # "deep copy" recursive clone, check the _memo dict to see if 343 # we've already cloned this instance. 344 def __call__(self, **kwargs): 345 memo_dict = kwargs.get('_memo') 346 if memo_dict is None: 347 # no memo_dict: must be top-level clone operation. 348 # this is only allowed at the root of a hierarchy 349 if self._parent: 350 raise RuntimeError, "attempt to clone object %s " \ 351 "not at the root of a tree (parent = %s)" \ 352 % (self, self._parent) 353 # create a new dict and use that. 354 memo_dict = {} 355 kwargs['_memo'] = memo_dict 356 elif memo_dict.has_key(self): 357 # clone already done & memoized 358 return memo_dict[self] 359 return self.__class__(_ancestor = self, **kwargs) 360 361 def __getattr__(self, attr): 362 if self._ports.has_key(attr): 363 # return reference that can be assigned to another port 364 # via __setattr__ 365 return self._ports[attr].makeRef(self, attr) 366 367 if self._values.has_key(attr): 368 return self._values[attr] 369 370 raise AttributeError, "object '%s' has no attribute '%s'" \ 371 % (self.__class__.__name__, attr) 372 373 # Set attribute (called on foo.attr = value when foo is an 374 # instance of class cls). 375 def __setattr__(self, attr, value): 376 # normal processing for private attributes 377 if attr.startswith('_'): 378 object.__setattr__(self, attr, value) 379 return 380 381 if self._ports.has_key(attr): 382 # set up port connection 383 self._ports[attr].connect(self, attr, value) 384 return 385 386 if isSimObjectOrSequence(value) and self._instantiated: 387 raise RuntimeError, \ 388 "cannot set SimObject parameter '%s' after\n" \ 389 " instance been cloned %s" % (attr, `self`) 390 391 # must be SimObject param 392 param = self._params.get(attr, None) 393 if param: 394 try: 395 value = param.convert(value) 396 except Exception, e: 397 msg = "%s\nError setting param %s.%s to %s\n" % \ 398 (e, self.__class__.__name__, attr, value) 399 e.args = (msg, ) 400 raise 401 elif isSimObjectOrSequence(value): 402 pass 403 else: 404 raise AttributeError, "Class %s has no parameter %s" \ 405 % (self.__class__.__name__, attr) 406 407 # clear out old child with this name, if any 408 self.clear_child(attr) 409 410 if isSimObject(value): 411 value.set_path(self, attr) 412 elif isSimObjectSequence(value): 413 value = SimObjVector(value) 414 [v.set_path(self, "%s%d" % (attr, i)) for i,v in enumerate(value)] 415 416 self._values[attr] = value 417 418 # this hack allows tacking a '[0]' onto parameters that may or may 419 # not be vectors, and always getting the first element (e.g. cpus) 420 def __getitem__(self, key): 421 if key == 0: 422 return self 423 raise TypeError, "Non-zero index '%s' to SimObject" % key 424 425 # clear out children with given name, even if it's a vector 426 def clear_child(self, name): 427 if not self._children.has_key(name): 428 return 429 child = self._children[name] 430 if isinstance(child, SimObjVector): 431 for i in xrange(len(child)): 432 del self._children["s%d" % (name, i)] 433 del self._children[name] 434 435 def add_child(self, name, value): 436 self._children[name] = value 437 438 def set_path(self, parent, name): 439 if not self._parent: 440 self._parent = parent 441 self._name = name 442 parent.add_child(name, self) 443 444 def path(self): 445 if not self._parent: 446 return 'root' 447 ppath = self._parent.path() 448 if ppath == 'root': 449 return self._name 450 return ppath + "." + self._name 451 452 def __str__(self): 453 return self.path() 454 455 def ini_str(self): 456 return self.path() 457 458 def find_any(self, ptype): 459 if isinstance(self, ptype): 460 return self, True 461 462 found_obj = None 463 for child in self._children.itervalues(): 464 if isinstance(child, ptype): 465 if found_obj != None and child != found_obj: 466 raise AttributeError, \ 467 'parent.any matched more than one: %s %s' % \ 468 (found_obj.path, child.path) 469 found_obj = child 470 # search param space 471 for pname,pdesc in self._params.iteritems(): 472 if issubclass(pdesc.ptype, ptype): 473 match_obj = self._values[pname] 474 if found_obj != None and found_obj != match_obj: 475 raise AttributeError, \ 476 'parent.any matched more than one: %s' % obj.path 477 found_obj = match_obj 478 return found_obj, found_obj != None 479 480 def unproxy(self, base): 481 return self 482 483 def print_ini(self): 484 print '[' + self.path() + ']' # .ini section header 485 486 instanceDict[self.path()] = self 487 488 if hasattr(self, 'type') and not isinstance(self, ParamContext): 489 print 'type=%s' % self.type 490 491 child_names = self._children.keys() 492 child_names.sort() 493 np_child_names = [c for c in child_names \ 494 if not isinstance(self._children[c], ParamContext)] 495 if len(np_child_names): 496 print 'children=%s' % ' '.join(np_child_names) 497 498 param_names = self._params.keys() 499 param_names.sort() 500 for param in param_names: 501 value = self._values.get(param, None) 502 if value != None: 503 if isproxy(value): 504 try: 505 value = value.unproxy(self) 506 except: 507 print >> sys.stderr, \ 508 "Error in unproxying param '%s' of %s" % \ 509 (param, self.path()) 510 raise 511 setattr(self, param, value) 512 print '%s=%s' % (param, self._values[param].ini_str()) 513 514 print # blank line between objects 515 516 for child in child_names: 517 self._children[child].print_ini() 518 519 # Call C++ to create C++ object corresponding to this object and 520 # (recursively) all its children 521 def createCCObject(self): 522 self.getCCObject() # force creation 523 for child in self._children.itervalues(): 524 child.createCCObject() 525 526 # Get C++ object corresponding to this object, calling C++ if 527 # necessary to construct it. Does *not* recursively create 528 # children. 529 def getCCObject(self): 530 if not self._ccObject: 531 self._ccObject = -1 # flag to catch cycles in recursion 532 self._ccObject = cc_main.createSimObject(self.path()) 533 elif self._ccObject == -1: 534 raise RuntimeError, "%s: recursive call to getCCObject()" \ 535 % self.path() 536 return self._ccObject 537 538 # Create C++ port connections corresponding to the connections in 539 # _port_map (& recursively for all children) 540 def connectPorts(self): 541 for portRef in self._port_map.itervalues(): 542 applyOrMap(portRef, 'ccConnect') 543 for child in self._children.itervalues(): 544 child.connectPorts() 545 546 # generate output file for 'dot' to display as a pretty graph. 547 # this code is currently broken. 548 def outputDot(self, dot): 549 label = "{%s|" % self.path 550 if isSimObject(self.realtype): 551 label += '%s|' % self.type 552 553 if self.children: 554 # instantiate children in same order they were added for 555 # backward compatibility (else we can end up with cpu1 556 # before cpu0). 557 for c in self.children: 558 dot.add_edge(pydot.Edge(self.path,c.path, style="bold")) 559 560 simobjs = [] 561 for param in self.params: 562 try: 563 if param.value is None: 564 raise AttributeError, 'Parameter with no value' 565 566 value = param.value 567 string = param.string(value) 568 except Exception, e: 569 msg = 'exception in %s:%s\n%s' % (self.name, param.name, e) 570 e.args = (msg, ) 571 raise 572 573 if isSimObject(param.ptype) and string != "Null": 574 simobjs.append(string) 575 else: 576 label += '%s = %s\\n' % (param.name, string) 577 578 for so in simobjs: 579 label += "|<%s> %s" % (so, so) 580 dot.add_edge(pydot.Edge("%s:%s" % (self.path, so), so, 581 tailport="w")) 582 label += '}' 583 dot.add_node(pydot.Node(self.path,shape="Mrecord",label=label)) 584 585 # recursively dump out children 586 for c in self.children: 587 c.outputDot(dot) 588 589class ParamContext(SimObject): 590 pass 591 592##################################################################### 593# 594# Proxy object support. 595# 596##################################################################### 597 598class BaseProxy(object): 599 def __init__(self, search_self, search_up): 600 self._search_self = search_self 601 self._search_up = search_up 602 self._multiplier = None 603 604 def __setattr__(self, attr, value): 605 if not attr.startswith('_'): 606 raise AttributeError, 'cannot set attribute on proxy object' 607 super(BaseProxy, self).__setattr__(attr, value) 608 609 # support multiplying proxies by constants 610 def __mul__(self, other): 611 if not isinstance(other, (int, long, float)): 612 raise TypeError, "Proxy multiplier must be integer" 613 if self._multiplier == None: 614 self._multiplier = other 615 else: 616 # support chained multipliers 617 self._multiplier *= other 618 return self 619 620 __rmul__ = __mul__ 621 622 def _mulcheck(self, result): 623 if self._multiplier == None: 624 return result 625 return result * self._multiplier 626 627 def unproxy(self, base): 628 obj = base 629 done = False 630 631 if self._search_self: 632 result, done = self.find(obj) 633 634 if self._search_up: 635 while not done: 636 obj = obj._parent 637 if not obj: 638 break 639 result, done = self.find(obj) 640 641 if not done: 642 raise AttributeError, "Can't resolve proxy '%s' from '%s'" % \ 643 (self.path(), base.path()) 644 645 if isinstance(result, BaseProxy): 646 if result == self: 647 raise RuntimeError, "Cycle in unproxy" 648 result = result.unproxy(obj) 649 650 return self._mulcheck(result) 651 652 def getindex(obj, index): 653 if index == None: 654 return obj 655 try: 656 obj = obj[index] 657 except TypeError: 658 if index != 0: 659 raise 660 # if index is 0 and item is not subscriptable, just 661 # use item itself (so cpu[0] works on uniprocessors) 662 return obj 663 getindex = staticmethod(getindex) 664 665 def set_param_desc(self, pdesc): 666 self._pdesc = pdesc 667 668class AttrProxy(BaseProxy): 669 def __init__(self, search_self, search_up, attr): 670 super(AttrProxy, self).__init__(search_self, search_up) 671 self._attr = attr 672 self._modifiers = [] 673 674 def __getattr__(self, attr): 675 # python uses __bases__ internally for inheritance 676 if attr.startswith('_'): 677 return super(AttrProxy, self).__getattr__(self, attr) 678 if hasattr(self, '_pdesc'): 679 raise AttributeError, "Attribute reference on bound proxy" 680 self._modifiers.append(attr) 681 return self 682 683 # support indexing on proxies (e.g., Self.cpu[0]) 684 def __getitem__(self, key): 685 if not isinstance(key, int): 686 raise TypeError, "Proxy object requires integer index" 687 self._modifiers.append(key) 688 return self 689 690 def find(self, obj): 691 try: 692 val = getattr(obj, self._attr) 693 except: 694 return None, False 695 while isproxy(val): 696 val = val.unproxy(obj) 697 for m in self._modifiers: 698 if isinstance(m, str): 699 val = getattr(val, m) 700 elif isinstance(m, int): 701 val = val[m] 702 else: 703 assert("Item must be string or integer") 704 while isproxy(val): 705 val = val.unproxy(obj) 706 return val, True 707 708 def path(self): 709 p = self._attr 710 for m in self._modifiers: 711 if isinstance(m, str): 712 p += '.%s' % m 713 elif isinstance(m, int): 714 p += '[%d]' % m 715 else: 716 assert("Item must be string or integer") 717 return p 718 719class AnyProxy(BaseProxy): 720 def find(self, obj): 721 return obj.find_any(self._pdesc.ptype) 722 723 def path(self): 724 return 'any' 725 726def isproxy(obj): 727 if isinstance(obj, (BaseProxy, EthernetAddr)): 728 return True 729 elif isinstance(obj, (list, tuple)): 730 for v in obj: 731 if isproxy(v): 732 return True 733 return False 734 735class ProxyFactory(object): 736 def __init__(self, search_self, search_up): 737 self.search_self = search_self 738 self.search_up = search_up 739 740 def __getattr__(self, attr): 741 if attr == 'any': 742 return AnyProxy(self.search_self, self.search_up) 743 else: 744 return AttrProxy(self.search_self, self.search_up, attr) 745 746# global objects for handling proxies 747Parent = ProxyFactory(search_self = False, search_up = True) 748Self = ProxyFactory(search_self = True, search_up = False) 749 750##################################################################### 751# 752# Parameter description classes 753# 754# The _params dictionary in each class maps parameter names to either 755# a Param or a VectorParam object. These objects contain the 756# parameter description string, the parameter type, and the default 757# value (if any). The convert() method on these objects is used to 758# force whatever value is assigned to the parameter to the appropriate 759# type. 760# 761# Note that the default values are loaded into the class's attribute 762# space when the parameter dictionary is initialized (in 763# MetaSimObject._new_param()); after that point they aren't used. 764# 765##################################################################### 766 767# Dummy base class to identify types that are legitimate for SimObject 768# parameters. 769class ParamValue(object): 770 771 # default for printing to .ini file is regular string conversion. 772 # will be overridden in some cases 773 def ini_str(self): 774 return str(self) 775 776 # allows us to blithely call unproxy() on things without checking 777 # if they're really proxies or not 778 def unproxy(self, base): 779 return self 780 781# Regular parameter description. 782class ParamDesc(object): 783 def __init__(self, ptype_str, ptype, *args, **kwargs): 784 self.ptype_str = ptype_str 785 # remember ptype only if it is provided 786 if ptype != None: 787 self.ptype = ptype 788 789 if args: 790 if len(args) == 1: 791 self.desc = args[0] 792 elif len(args) == 2: 793 self.default = args[0] 794 self.desc = args[1] 795 else: 796 raise TypeError, 'too many arguments' 797 798 if kwargs.has_key('desc'): 799 assert(not hasattr(self, 'desc')) 800 self.desc = kwargs['desc'] 801 del kwargs['desc'] 802 803 if kwargs.has_key('default'): 804 assert(not hasattr(self, 'default')) 805 self.default = kwargs['default'] 806 del kwargs['default'] 807 808 if kwargs: 809 raise TypeError, 'extra unknown kwargs %s' % kwargs 810 811 if not hasattr(self, 'desc'): 812 raise TypeError, 'desc attribute missing' 813 814 def __getattr__(self, attr): 815 if attr == 'ptype': 816 try: 817 ptype = eval(self.ptype_str, m5.objects.__dict__) 818 if not isinstance(ptype, type): 819 panic("Param qualifier is not a type: %s" % self.ptype) 820 self.ptype = ptype 821 return ptype 822 except NameError: 823 pass 824 raise AttributeError, "'%s' object has no attribute '%s'" % \ 825 (type(self).__name__, attr) 826 827 def convert(self, value): 828 if isinstance(value, BaseProxy): 829 value.set_param_desc(self) 830 return value 831 if not hasattr(self, 'ptype') and isNullPointer(value): 832 # deferred evaluation of SimObject; continue to defer if 833 # we're just assigning a null pointer 834 return value 835 if isinstance(value, self.ptype): 836 return value 837 if isNullPointer(value) and issubclass(self.ptype, SimObject): 838 return value 839 return self.ptype(value) 840 841# Vector-valued parameter description. Just like ParamDesc, except 842# that the value is a vector (list) of the specified type instead of a 843# single value. 844 845class VectorParamValue(list): 846 def ini_str(self): 847 return ' '.join([v.ini_str() for v in self]) 848 849 def unproxy(self, base): 850 return [v.unproxy(base) for v in self] 851 852class SimObjVector(VectorParamValue): 853 def print_ini(self): 854 for v in self: 855 v.print_ini() 856 857class VectorParamDesc(ParamDesc): 858 # Convert assigned value to appropriate type. If the RHS is not a 859 # list or tuple, it generates a single-element list. 860 def convert(self, value): 861 if isinstance(value, (list, tuple)): 862 # list: coerce each element into new list 863 tmp_list = [ ParamDesc.convert(self, v) for v in value ] 864 if isSimObjectSequence(tmp_list): 865 return SimObjVector(tmp_list) 866 else: 867 return VectorParamValue(tmp_list) 868 else: 869 # singleton: leave it be (could coerce to a single-element 870 # list here, but for some historical reason we don't... 871 return ParamDesc.convert(self, value) 872 873 874class ParamFactory(object): 875 def __init__(self, param_desc_class, ptype_str = None): 876 self.param_desc_class = param_desc_class 877 self.ptype_str = ptype_str 878 879 def __getattr__(self, attr): 880 if self.ptype_str: 881 attr = self.ptype_str + '.' + attr 882 return ParamFactory(self.param_desc_class, attr) 883 884 # E.g., Param.Int(5, "number of widgets") 885 def __call__(self, *args, **kwargs): 886 caller_frame = inspect.currentframe().f_back 887 ptype = None 888 try: 889 ptype = eval(self.ptype_str, 890 caller_frame.f_globals, caller_frame.f_locals) 891 if not isinstance(ptype, type): 892 raise TypeError, \ 893 "Param qualifier is not a type: %s" % ptype 894 except NameError: 895 # if name isn't defined yet, assume it's a SimObject, and 896 # try to resolve it later 897 pass 898 return self.param_desc_class(self.ptype_str, ptype, *args, **kwargs) 899 900Param = ParamFactory(ParamDesc) 901VectorParam = ParamFactory(VectorParamDesc) 902 903##################################################################### 904# 905# Parameter Types 906# 907# Though native Python types could be used to specify parameter types 908# (the 'ptype' field of the Param and VectorParam classes), it's more 909# flexible to define our own set of types. This gives us more control 910# over how Python expressions are converted to values (via the 911# __init__() constructor) and how these values are printed out (via 912# the __str__() conversion method). Eventually we'll need these types 913# to correspond to distinct C++ types as well. 914# 915##################################################################### 916 917# superclass for "numeric" parameter values, to emulate math 918# operations in a type-safe way. e.g., a Latency times an int returns 919# a new Latency object. 920class NumericParamValue(ParamValue): 921 def __str__(self): 922 return str(self.value) 923 924 def __float__(self): 925 return float(self.value) 926 927 # hook for bounds checking 928 def _check(self): 929 return 930 931 def __mul__(self, other): 932 newobj = self.__class__(self) 933 newobj.value *= other 934 newobj._check() 935 return newobj 936 937 __rmul__ = __mul__ 938 939 def __div__(self, other): 940 newobj = self.__class__(self) 941 newobj.value /= other 942 newobj._check() 943 return newobj 944 945 def __sub__(self, other): 946 newobj = self.__class__(self) 947 newobj.value -= other 948 newobj._check() 949 return newobj 950 951class Range(ParamValue): 952 type = int # default; can be overridden in subclasses 953 def __init__(self, *args, **kwargs): 954 955 def handle_kwargs(self, kwargs): 956 if 'end' in kwargs: 957 self.second = self.type(kwargs.pop('end')) 958 elif 'size' in kwargs: 959 self.second = self.first + self.type(kwargs.pop('size')) - 1 960 else: 961 raise TypeError, "Either end or size must be specified" 962 963 if len(args) == 0: 964 self.first = self.type(kwargs.pop('start')) 965 handle_kwargs(self, kwargs) 966 967 elif len(args) == 1: 968 if kwargs: 969 self.first = self.type(args[0]) 970 handle_kwargs(self, kwargs) 971 elif isinstance(args[0], Range): 972 self.first = self.type(args[0].first) 973 self.second = self.type(args[0].second) 974 else: 975 self.first = self.type(0) 976 self.second = self.type(args[0]) - 1 977 978 elif len(args) == 2: 979 self.first = self.type(args[0]) 980 self.second = self.type(args[1]) 981 else: 982 raise TypeError, "Too many arguments specified" 983 984 if kwargs: 985 raise TypeError, "too many keywords: %s" % kwargs.keys() 986 987 def __str__(self): 988 return '%s:%s' % (self.first, self.second) 989 990# Metaclass for bounds-checked integer parameters. See CheckedInt. 991class CheckedIntType(type): 992 def __init__(cls, name, bases, dict): 993 super(CheckedIntType, cls).__init__(name, bases, dict) 994 995 # CheckedInt is an abstract base class, so we actually don't 996 # want to do any processing on it... the rest of this code is 997 # just for classes that derive from CheckedInt. 998 if name == 'CheckedInt': 999 return 1000 1001 if not (hasattr(cls, 'min') and hasattr(cls, 'max')): 1002 if not (hasattr(cls, 'size') and hasattr(cls, 'unsigned')): 1003 panic("CheckedInt subclass %s must define either\n" \ 1004 " 'min' and 'max' or 'size' and 'unsigned'\n" \ 1005 % name); 1006 if cls.unsigned: 1007 cls.min = 0 1008 cls.max = 2 ** cls.size - 1 1009 else: 1010 cls.min = -(2 ** (cls.size - 1)) 1011 cls.max = (2 ** (cls.size - 1)) - 1 1012 1013# Abstract superclass for bounds-checked integer parameters. This 1014# class is subclassed to generate parameter classes with specific 1015# bounds. Initialization of the min and max bounds is done in the 1016# metaclass CheckedIntType.__init__. 1017class CheckedInt(NumericParamValue): 1018 __metaclass__ = CheckedIntType 1019 1020 def _check(self): 1021 if not self.min <= self.value <= self.max: 1022 raise TypeError, 'Integer param out of bounds %d < %d < %d' % \ 1023 (self.min, self.value, self.max) 1024 1025 def __init__(self, value): 1026 if isinstance(value, str): 1027 self.value = toInteger(value) 1028 elif isinstance(value, (int, long, float)): 1029 self.value = long(value) 1030 self._check() 1031 1032class Int(CheckedInt): size = 32; unsigned = False 1033class Unsigned(CheckedInt): size = 32; unsigned = True 1034 1035class Int8(CheckedInt): size = 8; unsigned = False 1036class UInt8(CheckedInt): size = 8; unsigned = True 1037class Int16(CheckedInt): size = 16; unsigned = False 1038class UInt16(CheckedInt): size = 16; unsigned = True 1039class Int32(CheckedInt): size = 32; unsigned = False 1040class UInt32(CheckedInt): size = 32; unsigned = True 1041class Int64(CheckedInt): size = 64; unsigned = False 1042class UInt64(CheckedInt): size = 64; unsigned = True 1043 1044class Counter(CheckedInt): size = 64; unsigned = True 1045class Tick(CheckedInt): size = 64; unsigned = True 1046class TcpPort(CheckedInt): size = 16; unsigned = True 1047class UdpPort(CheckedInt): size = 16; unsigned = True 1048 1049class Percent(CheckedInt): min = 0; max = 100 1050 1051class Float(ParamValue, float): 1052 pass 1053 1054class MemorySize(CheckedInt): 1055 size = 64 1056 unsigned = True 1057 def __init__(self, value): 1058 if isinstance(value, MemorySize): 1059 self.value = value.value 1060 else: 1061 self.value = toMemorySize(value) 1062 self._check() 1063 1064class MemorySize32(CheckedInt): 1065 size = 32 1066 unsigned = True 1067 def __init__(self, value): 1068 if isinstance(value, MemorySize): 1069 self.value = value.value 1070 else: 1071 self.value = toMemorySize(value) 1072 self._check() 1073 1074class Addr(CheckedInt): 1075 size = 64 1076 unsigned = True 1077 def __init__(self, value): 1078 if isinstance(value, Addr): 1079 self.value = value.value 1080 else: 1081 try: 1082 self.value = toMemorySize(value) 1083 except TypeError: 1084 self.value = long(value) 1085 self._check() 1086 1087class AddrRange(Range): 1088 type = Addr 1089 1090# String-valued parameter. Just mixin the ParamValue class 1091# with the built-in str class. 1092class String(ParamValue,str): 1093 pass 1094 1095# Boolean parameter type. Python doesn't let you subclass bool, since 1096# it doesn't want to let you create multiple instances of True and 1097# False. Thus this is a little more complicated than String. 1098class Bool(ParamValue): 1099 def __init__(self, value): 1100 try: 1101 self.value = toBool(value) 1102 except TypeError: 1103 self.value = bool(value) 1104 1105 def __str__(self): 1106 return str(self.value) 1107 1108 def ini_str(self): 1109 if self.value: 1110 return 'true' 1111 return 'false' 1112 1113def IncEthernetAddr(addr, val = 1): 1114 bytes = map(lambda x: int(x, 16), addr.split(':')) 1115 bytes[5] += val 1116 for i in (5, 4, 3, 2, 1): 1117 val,rem = divmod(bytes[i], 256) 1118 bytes[i] = rem 1119 if val == 0: 1120 break 1121 bytes[i - 1] += val 1122 assert(bytes[0] <= 255) 1123 return ':'.join(map(lambda x: '%02x' % x, bytes)) 1124 1125class NextEthernetAddr(object): 1126 addr = "00:90:00:00:00:01" 1127 1128 def __init__(self, inc = 1): 1129 self.value = NextEthernetAddr.addr 1130 NextEthernetAddr.addr = IncEthernetAddr(NextEthernetAddr.addr, inc) 1131 1132class EthernetAddr(ParamValue): 1133 def __init__(self, value): 1134 if value == NextEthernetAddr: 1135 self.value = value 1136 return 1137 1138 if not isinstance(value, str): 1139 raise TypeError, "expected an ethernet address and didn't get one" 1140 1141 bytes = value.split(':') 1142 if len(bytes) != 6: 1143 raise TypeError, 'invalid ethernet address %s' % value 1144 1145 for byte in bytes: 1146 if not 0 <= int(byte) <= 256: 1147 raise TypeError, 'invalid ethernet address %s' % value 1148 1149 self.value = value 1150 1151 def unproxy(self, base): 1152 if self.value == NextEthernetAddr: 1153 self.addr = self.value().value 1154 return self 1155 1156 def __str__(self): 1157 if self.value == NextEthernetAddr: 1158 if hasattr(self, 'addr'): 1159 return self.addr 1160 else: 1161 return "NextEthernetAddr (unresolved)" 1162 else: 1163 return self.value 1164 1165# Special class for NULL pointers. Note the special check in 1166# make_param_value() above that lets these be assigned where a 1167# SimObject is required. 1168# only one copy of a particular node 1169class NullSimObject(object): 1170 __metaclass__ = Singleton 1171 1172 def __call__(cls): 1173 return cls 1174 1175 def _instantiate(self, parent = None, path = ''): 1176 pass 1177 1178 def ini_str(self): 1179 return 'Null' 1180 1181 def unproxy(self, base): 1182 return self 1183 1184 def set_path(self, parent, name): 1185 pass 1186 def __str__(self): 1187 return 'Null' 1188 1189# The only instance you'll ever need... 1190Null = NULL = NullSimObject() 1191 1192# Enumerated types are a little more complex. The user specifies the 1193# type as Enum(foo) where foo is either a list or dictionary of 1194# alternatives (typically strings, but not necessarily so). (In the 1195# long run, the integer value of the parameter will be the list index 1196# or the corresponding dictionary value. For now, since we only check 1197# that the alternative is valid and then spit it into a .ini file, 1198# there's not much point in using the dictionary.) 1199 1200# What Enum() must do is generate a new type encapsulating the 1201# provided list/dictionary so that specific values of the parameter 1202# can be instances of that type. We define two hidden internal 1203# classes (_ListEnum and _DictEnum) to serve as base classes, then 1204# derive the new type from the appropriate base class on the fly. 1205 1206 1207# Metaclass for Enum types 1208class MetaEnum(type): 1209 def __init__(cls, name, bases, init_dict): 1210 if init_dict.has_key('map'): 1211 if not isinstance(cls.map, dict): 1212 raise TypeError, "Enum-derived class attribute 'map' " \ 1213 "must be of type dict" 1214 # build list of value strings from map 1215 cls.vals = cls.map.keys() 1216 cls.vals.sort() 1217 elif init_dict.has_key('vals'): 1218 if not isinstance(cls.vals, list): 1219 raise TypeError, "Enum-derived class attribute 'vals' " \ 1220 "must be of type list" 1221 # build string->value map from vals sequence 1222 cls.map = {} 1223 for idx,val in enumerate(cls.vals): 1224 cls.map[val] = idx 1225 else: 1226 raise TypeError, "Enum-derived class must define "\ 1227 "attribute 'map' or 'vals'" 1228 1229 super(MetaEnum, cls).__init__(name, bases, init_dict) 1230 1231 def cpp_declare(cls): 1232 s = 'enum %s {\n ' % cls.__name__ 1233 s += ',\n '.join(['%s = %d' % (v,cls.map[v]) for v in cls.vals]) 1234 s += '\n};\n' 1235 return s 1236 1237# Base class for enum types. 1238class Enum(ParamValue): 1239 __metaclass__ = MetaEnum 1240 vals = [] 1241 1242 def __init__(self, value): 1243 if value not in self.map: 1244 raise TypeError, "Enum param got bad value '%s' (not in %s)" \ 1245 % (value, self.vals) 1246 self.value = value 1247 1248 def __str__(self): 1249 return self.value 1250 1251ticks_per_sec = None 1252 1253# how big does a rounding error need to be before we warn about it? 1254frequency_tolerance = 0.001 # 0.1% 1255 1256# convert a floting-point # of ticks to integer, and warn if rounding 1257# discards too much precision 1258def tick_check(float_ticks): 1259 if float_ticks == 0: 1260 return 0 1261 int_ticks = int(round(float_ticks)) 1262 err = (float_ticks - int_ticks) / float_ticks 1263 if err > frequency_tolerance: 1264 print >> sys.stderr, "Warning: rounding error > tolerance" 1265 print >> sys.stderr, " %f rounded to %d" % (float_ticks, int_ticks) 1266 #raise ValueError 1267 return int_ticks 1268 1269def getLatency(value): 1270 if isinstance(value, Latency) or isinstance(value, Clock): 1271 return value.value 1272 elif isinstance(value, Frequency) or isinstance(value, RootClock): 1273 return 1 / value.value 1274 elif isinstance(value, str): 1275 try: 1276 return toLatency(value) 1277 except ValueError: 1278 try: 1279 return 1 / toFrequency(value) 1280 except ValueError: 1281 pass # fall through 1282 raise ValueError, "Invalid Frequency/Latency value '%s'" % value 1283 1284 1285class Latency(NumericParamValue): 1286 def __init__(self, value): 1287 self.value = getLatency(value) 1288 1289 def __getattr__(self, attr): 1290 if attr in ('latency', 'period'): 1291 return self 1292 if attr == 'frequency': 1293 return Frequency(self) 1294 raise AttributeError, "Latency object has no attribute '%s'" % attr 1295 1296 # convert latency to ticks 1297 def ini_str(self): 1298 return str(tick_check(self.value * ticks_per_sec)) 1299 1300class Frequency(NumericParamValue): 1301 def __init__(self, value): 1302 self.value = 1 / getLatency(value) 1303 1304 def __getattr__(self, attr): 1305 if attr == 'frequency': 1306 return self 1307 if attr in ('latency', 'period'): 1308 return Latency(self) 1309 raise AttributeError, "Frequency object has no attribute '%s'" % attr 1310 1311 # convert frequency to ticks per period 1312 def ini_str(self): 1313 return self.period.ini_str() 1314 1315# Just like Frequency, except ini_str() is absolute # of ticks per sec (Hz). 1316# We can't inherit from Frequency because we don't want it to be directly 1317# assignable to a regular Frequency parameter. 1318class RootClock(ParamValue): 1319 def __init__(self, value): 1320 self.value = 1 / getLatency(value) 1321 1322 def __getattr__(self, attr): 1323 if attr == 'frequency': 1324 return Frequency(self) 1325 if attr in ('latency', 'period'): 1326 return Latency(self) 1327 raise AttributeError, "Frequency object has no attribute '%s'" % attr 1328 1329 def ini_str(self): 1330 return str(tick_check(self.value)) 1331 1332# A generic frequency and/or Latency value. Value is stored as a latency, 1333# but to avoid ambiguity this object does not support numeric ops (* or /). 1334# An explicit conversion to a Latency or Frequency must be made first. 1335class Clock(ParamValue): 1336 def __init__(self, value): 1337 self.value = getLatency(value) 1338 1339 def __getattr__(self, attr): 1340 if attr == 'frequency': 1341 return Frequency(self) 1342 if attr in ('latency', 'period'): 1343 return Latency(self) 1344 raise AttributeError, "Frequency object has no attribute '%s'" % attr 1345 1346 def ini_str(self): 1347 return self.period.ini_str() 1348 1349class NetworkBandwidth(float,ParamValue): 1350 def __new__(cls, value): 1351 val = toNetworkBandwidth(value) / 8.0 1352 return super(cls, NetworkBandwidth).__new__(cls, val) 1353 1354 def __str__(self): 1355 return str(self.val) 1356 1357 def ini_str(self): 1358 return '%f' % (ticks_per_sec / float(self)) 1359 1360class MemoryBandwidth(float,ParamValue): 1361 def __new__(self, value): 1362 val = toMemoryBandwidth(value) 1363 return super(cls, MemoryBandwidth).__new__(cls, val) 1364 1365 def __str__(self): 1366 return str(self.val) 1367 1368 def ini_str(self): 1369 return '%f' % (ticks_per_sec / float(self)) 1370 1371# 1372# "Constants"... handy aliases for various values. 1373# 1374 1375# Some memory range specifications use this as a default upper bound. 1376MaxAddr = Addr.max 1377MaxTick = Tick.max 1378AllMemory = AddrRange(0, MaxAddr) 1379 1380 1381##################################################################### 1382# 1383# Port objects 1384# 1385# Ports are used to interconnect objects in the memory system. 1386# 1387##################################################################### 1388 1389# Port reference: encapsulates a reference to a particular port on a 1390# particular SimObject. 1391class PortRef(object): 1392 def __init__(self, simobj, name, isVec): 1393 assert(isSimObject(simobj)) 1394 self.simobj = simobj 1395 self.name = name 1396 self.index = -1 1397 self.isVec = isVec # is this a vector port? 1398 self.peer = None # not associated with another port yet 1399 self.ccConnected = False # C++ port connection done? 1400 1401 # Set peer port reference. Called via __setattr__ as a result of 1402 # a port assignment, e.g., "obj1.port1 = obj2.port2". 1403 def setPeer(self, other): 1404 if self.isVec: 1405 curMap = self.simobj._port_map.get(self.name, []) 1406 self.index = len(curMap) 1407 curMap.append(other) 1408 else: 1409 curMap = self.simobj._port_map.get(self.name) 1410 if curMap and not self.isVec: 1411 print "warning: overwriting port", self.simobj, self.name 1412 curMap = other 1413 self.simobj._port_map[self.name] = curMap 1414 self.peer = other 1415 1416 def clone(self, memo): 1417 newRef = copy.copy(self) 1418 assert(isSimObject(newRef.simobj)) 1419 newRef.simobj = newRef.simobj(_memo=memo) 1420 # Tricky: if I'm the *second* PortRef in the pair to be 1421 # cloned, then my peer is still in the middle of its clone 1422 # method, and thus hasn't returned to its owner's 1423 # SimObject.__init__ to get installed in _port_map. As a 1424 # result I have no way of finding the *new* peer object. So I 1425 # mark myself as "waiting" for my peer, and I let the *first* 1426 # PortRef clone call set up both peer pointers after I return. 1427 newPeer = newRef.simobj._port_map.get(self.name) 1428 if newPeer: 1429 if self.isVec: 1430 assert(self.index != -1) 1431 newPeer = newPeer[self.index] 1432 # other guy is all set up except for his peer pointer 1433 assert(newPeer.peer == -1) # peer must be waiting for handshake 1434 newPeer.peer = newRef 1435 newRef.peer = newPeer 1436 else: 1437 # other guy is in clone; just wait for him to do the work 1438 newRef.peer = -1 # mark as waiting for handshake 1439 return newRef 1440 1441 # Call C++ to create corresponding port connection between C++ objects 1442 def ccConnect(self): 1443 if self.ccConnected: # already done this 1444 return 1445 peer = self.peer 1446 cc_main.connectPorts(self.simobj.getCCObject(), self.name, self.index, 1447 peer.simobj.getCCObject(), peer.name, peer.index) 1448 self.ccConnected = True 1449 peer.ccConnected = True 1450 1451# Port description object. Like a ParamDesc object, this represents a 1452# logical port in the SimObject class, not a particular port on a 1453# SimObject instance. The latter are represented by PortRef objects. 1454class Port(object): 1455 def __init__(self, desc): 1456 self.desc = desc 1457 self.isVec = False 1458 1459 # Generate a PortRef for this port on the given SimObject with the 1460 # given name 1461 def makeRef(self, simobj, name): 1462 return PortRef(simobj, name, self.isVec) 1463 1464 # Connect an instance of this port (on the given SimObject with 1465 # the given name) with the port described by the supplied PortRef 1466 def connect(self, simobj, name, ref): 1467 if not isinstance(ref, PortRef): 1468 raise TypeError, \ 1469 "assigning non-port reference port '%s'" % name 1470 myRef = self.makeRef(simobj, name) 1471 myRef.setPeer(ref) 1472 ref.setPeer(myRef) 1473 1474# VectorPort description object. Like Port, but represents a vector 1475# of connections (e.g., as on a Bus). 1476class VectorPort(Port): 1477 def __init__(self, desc): 1478 Port.__init__(self, desc) 1479 self.isVec = True 1480 1481##################################################################### 1482 1483# __all__ defines the list of symbols that get exported when 1484# 'from config import *' is invoked. Try to keep this reasonably 1485# short to avoid polluting other namespaces. 1486__all__ = ['SimObject', 'ParamContext', 'Param', 'VectorParam', 1487 'Parent', 'Self', 1488 'Enum', 'Bool', 'String', 'Float', 1489 'Int', 'Unsigned', 'Int8', 'UInt8', 'Int16', 'UInt16', 1490 'Int32', 'UInt32', 'Int64', 'UInt64', 1491 'Counter', 'Addr', 'Tick', 'Percent', 1492 'TcpPort', 'UdpPort', 'EthernetAddr', 1493 'MemorySize', 'MemorySize32', 1494 'Latency', 'Frequency', 'RootClock', 'Clock', 1495 'NetworkBandwidth', 'MemoryBandwidth', 1496 'Range', 'AddrRange', 'MaxAddr', 'MaxTick', 'AllMemory', 1497 'Null', 'NULL', 1498 'NextEthernetAddr', 1499 'Port', 'VectorPort'] 1500 1501