Root.py revision 7525
14486Sbinkertn@umich.edu# Copyright (c) 2005-2007 The Regents of The University of Michigan 24486Sbinkertn@umich.edu# All rights reserved. 34486Sbinkertn@umich.edu# 44486Sbinkertn@umich.edu# Redistribution and use in source and binary forms, with or without 54486Sbinkertn@umich.edu# modification, are permitted provided that the following conditions are 64486Sbinkertn@umich.edu# met: redistributions of source code must retain the above copyright 74486Sbinkertn@umich.edu# notice, this list of conditions and the following disclaimer; 84486Sbinkertn@umich.edu# redistributions in binary form must reproduce the above copyright 94486Sbinkertn@umich.edu# notice, this list of conditions and the following disclaimer in the 104486Sbinkertn@umich.edu# documentation and/or other materials provided with the distribution; 114486Sbinkertn@umich.edu# neither the name of the copyright holders nor the names of its 124486Sbinkertn@umich.edu# contributors may be used to endorse or promote products derived from 134486Sbinkertn@umich.edu# this software without specific prior written permission. 144486Sbinkertn@umich.edu# 154486Sbinkertn@umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 164486Sbinkertn@umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 174486Sbinkertn@umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 184486Sbinkertn@umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 194486Sbinkertn@umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 204486Sbinkertn@umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 214486Sbinkertn@umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 224486Sbinkertn@umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 234486Sbinkertn@umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 244486Sbinkertn@umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 254486Sbinkertn@umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 264486Sbinkertn@umich.edu# 274486Sbinkertn@umich.edu# Authors: Nathan Binkert 284486Sbinkertn@umich.edu 293102SN/Afrom m5.SimObject import SimObject 303102SN/Afrom m5.params import * 317525Ssteve.reinhardt@amd.comfrom m5.util import fatal 321382SN/A 331692SN/Aclass Root(SimObject): 347525Ssteve.reinhardt@amd.com 357525Ssteve.reinhardt@amd.com _the_instance = None 367525Ssteve.reinhardt@amd.com 377525Ssteve.reinhardt@amd.com def __new__(cls, **kwargs): 387525Ssteve.reinhardt@amd.com if Root._the_instance: 397525Ssteve.reinhardt@amd.com fatal("Attempt to allocate multiple instances of Root.") 407525Ssteve.reinhardt@amd.com return None 417525Ssteve.reinhardt@amd.com 427525Ssteve.reinhardt@amd.com # first call: allocate the unique instance 437525Ssteve.reinhardt@amd.com # 447525Ssteve.reinhardt@amd.com # If SimObject ever implements __new__, we may want to pass 457525Ssteve.reinhardt@amd.com # kwargs here, but for now this goes straight to 467525Ssteve.reinhardt@amd.com # object.__new__ which prints an ugly warning if you pass it 477525Ssteve.reinhardt@amd.com # args. Seems like a bad design but that's the way it is. 487525Ssteve.reinhardt@amd.com Root._the_instance = SimObject.__new__(cls) 497525Ssteve.reinhardt@amd.com return Root._the_instance 507525Ssteve.reinhardt@amd.com 517525Ssteve.reinhardt@amd.com @classmethod 527525Ssteve.reinhardt@amd.com def getInstance(cls): 537525Ssteve.reinhardt@amd.com return Root._the_instance 547525Ssteve.reinhardt@amd.com 557525Ssteve.reinhardt@amd.com def path(self): 567525Ssteve.reinhardt@amd.com return 'root' 577525Ssteve.reinhardt@amd.com 581366SN/A type = 'Root' 594167SN/A dummy = Param.Int(0, "We don't support objects without params") 60