ac8e73565a
Change-Id: Id6bdbc0c988aa92b96e292cabc913e6b974f14bb Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
77 lines
3.2 KiB
Python
77 lines
3.2 KiB
Python
# Copyright (c) 2005-2007 The Regents of The University of Michigan
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# Copyright (c) 2010-2013 Advanced Micro Devices, Inc.
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# Copyright (c) 2013 Mark D. Hill and David A. Wood
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Nathan Binkert
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from m5.SimObject import SimObject
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from m5.params import *
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from m5.util import fatal
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class Root(SimObject):
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_the_instance = None
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def __new__(cls, **kwargs):
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if Root._the_instance:
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fatal("Attempt to allocate multiple instances of Root.")
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return None
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# first call: allocate the unique instance
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#
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# If SimObject ever implements __new__, we may want to pass
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# kwargs here, but for now this goes straight to
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# object.__new__ which prints an ugly warning if you pass it
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# args. Seems like a bad design but that's the way it is.
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Root._the_instance = SimObject.__new__(cls)
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return Root._the_instance
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@classmethod
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def getInstance(cls):
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return Root._the_instance
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def path(self):
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return 'root'
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type = 'Root'
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cxx_header = "sim/root.hh"
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# By default, root sim object and hence all other sim objects schedule
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# event on the eventq with index 0.
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eventq_index = 0
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# Simulation Quantum for multiple main event queue simulation.
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# Needs to be set explicitly for a multi-eventq simulation.
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sim_quantum = Param.Tick(0, "simulation quantum")
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full_system = Param.Bool("if this is a full system simulation")
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# Time syncing prevents the simulation from running faster than real time.
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time_sync_enable = Param.Bool(False, "whether time syncing is enabled")
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time_sync_period = Param.Clock("100ms", "how often to sync with real time")
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time_sync_spin_threshold = \
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Param.Clock("100us", "when less than this much time is left, spin")
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