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: Nathan Binkert
28
29from m5.SimObject import SimObject
30from m5.params import *
31from m5.util import fatal
32
33class Root(SimObject):
34
35 _the_instance = None
36
37 def __new__(cls, **kwargs):
38 if Root._the_instance:
39 fatal("Attempt to allocate multiple instances of Root.")
40 return None
41
42 # first call: allocate the unique instance
43 #
44 # If SimObject ever implements __new__, we may want to pass
45 # kwargs here, but for now this goes straight to
46 # object.__new__ which prints an ugly warning if you pass it
47 # args. Seems like a bad design but that's the way it is.
48 Root._the_instance = SimObject.__new__(cls)
49 return Root._the_instance
50
51 @classmethod
52 def getInstance(cls):
53 return Root._the_instance
54
55 def path(self):
56 return 'root'
57
58 type = 'Root'
59 dummy = Param.Int(0, "We don't support objects without params")
| 3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28# Authors: Nathan Binkert
29
30from m5.SimObject import SimObject
31from m5.params import *
32from m5.util import fatal
33
34class Root(SimObject):
35
36 _the_instance = None
37
38 def __new__(cls, **kwargs):
39 if Root._the_instance:
40 fatal("Attempt to allocate multiple instances of Root.")
41 return None
42
43 # first call: allocate the unique instance
44 #
45 # If SimObject ever implements __new__, we may want to pass
46 # kwargs here, but for now this goes straight to
47 # object.__new__ which prints an ugly warning if you pass it
48 # args. Seems like a bad design but that's the way it is.
49 Root._the_instance = SimObject.__new__(cls)
50 return Root._the_instance
51
52 @classmethod
53 def getInstance(cls):
54 return Root._the_instance
55
56 def path(self):
57 return 'root'
58
59 type = 'Root'
60 dummy = Param.Int(0, "We don't support objects without params")
|