1# Copyright (c) 2005-2007 The Regents of The University of Michigan
2# Copyright (c) 2010-2013 Advanced Micro Devices, Inc.
3# Copyright (c) 2013 Mark D. Hill and David A. Wood
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met: redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer;
10# redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution;
13# neither the name of the copyright holders nor the names of its
14# contributors may be used to endorse or promote products derived from
15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28#
29# Authors: Nathan Binkert
30
31from m5.SimObject import SimObject
32from m5.defines import buildEnv
33from m5.params import *
34from m5.util import fatal
35
36class Root(SimObject):
37
38 _the_instance = None
39
40 def __new__(cls, **kwargs):
41 if Root._the_instance:
42 fatal("Attempt to allocate multiple instances of Root.")
43 return None
44
45 # first call: allocate the unique instance
46 #
47 # If SimObject ever implements __new__, we may want to pass
48 # kwargs here, but for now this goes straight to
49 # object.__new__ which prints an ugly warning if you pass it
50 # args. Seems like a bad design but that's the way it is.
51 Root._the_instance = SimObject.__new__(cls)
52 return Root._the_instance
| 1# Copyright (c) 2005-2007 The Regents of The University of Michigan
2# Copyright (c) 2010-2013 Advanced Micro Devices, Inc.
3# Copyright (c) 2013 Mark D. Hill and David A. Wood
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met: redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer;
10# redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution;
13# neither the name of the copyright holders nor the names of its
14# contributors may be used to endorse or promote products derived from
15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28#
29# Authors: Nathan Binkert
30
31from m5.SimObject import SimObject
32from m5.defines import buildEnv
33from m5.params import *
34from m5.util import fatal
35
36class Root(SimObject):
37
38 _the_instance = None
39
40 def __new__(cls, **kwargs):
41 if Root._the_instance:
42 fatal("Attempt to allocate multiple instances of Root.")
43 return None
44
45 # first call: allocate the unique instance
46 #
47 # If SimObject ever implements __new__, we may want to pass
48 # kwargs here, but for now this goes straight to
49 # object.__new__ which prints an ugly warning if you pass it
50 # args. Seems like a bad design but that's the way it is.
51 Root._the_instance = SimObject.__new__(cls)
52 return Root._the_instance
|
54 @classmethod
55 def getInstance(cls):
56 return Root._the_instance
57
58 def path(self):
59 return 'root'
60
61 type = 'Root'
62 cxx_header = "sim/root.hh"
63
64 # By default, root sim object and hence all other sim objects schedule
65 # event on the eventq with index 0.
66 eventq_index = 0
67
68 # Simulation Quantum for multiple main event queue simulation.
69 # Needs to be set explicitly for a multi-eventq simulation.
70 sim_quantum = Param.Tick(0, "simulation quantum")
71
72 full_system = Param.Bool("if this is a full system simulation")
73
74 # Time syncing prevents the simulation from running faster than real time.
75 time_sync_enable = Param.Bool(False, "whether time syncing is enabled")
76 time_sync_period = Param.Clock("100ms", "how often to sync with real time")
77 time_sync_spin_threshold = \
78 Param.Clock("100us", "when less than this much time is left, spin")
| 54 @classmethod
55 def getInstance(cls):
56 return Root._the_instance
57
58 def path(self):
59 return 'root'
60
61 type = 'Root'
62 cxx_header = "sim/root.hh"
63
64 # By default, root sim object and hence all other sim objects schedule
65 # event on the eventq with index 0.
66 eventq_index = 0
67
68 # Simulation Quantum for multiple main event queue simulation.
69 # Needs to be set explicitly for a multi-eventq simulation.
70 sim_quantum = Param.Tick(0, "simulation quantum")
71
72 full_system = Param.Bool("if this is a full system simulation")
73
74 # Time syncing prevents the simulation from running faster than real time.
75 time_sync_enable = Param.Bool(False, "whether time syncing is enabled")
76 time_sync_period = Param.Clock("100ms", "how often to sync with real time")
77 time_sync_spin_threshold = \
78 Param.Clock("100us", "when less than this much time is left, spin")
|