run.py revision 11475 
1# Copyright (c) 2012 ARM Limited
2# All rights reserved
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder.  You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated
10# unmodified and in its entirety in all distributions of the software,
11# modified or unmodified, in source code or in binary form.
12#
13# Copyright (c) 2006-2007 The Regents of The University of Michigan
14# All rights reserved.
15#
16# Redistribution and use in source and binary forms, with or without
17# modification, are permitted provided that the following conditions are
18# met: redistributions of source code must retain the above copyright
19# notice, this list of conditions and the following disclaimer;
20# redistributions in binary form must reproduce the above copyright
21# notice, this list of conditions and the following disclaimer in the
22# documentation and/or other materials provided with the distribution;
23# neither the name of the copyright holders nor the names of its
24# contributors may be used to endorse or promote products derived from
25# this software without specific prior written permission.
26#
27# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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37# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38#
39# Authors: Steve Reinhardt
40
41import os
42import sys
43import re
44import string
45
46from os.path import join as joinpath
47import os.path
48import os
49
50import m5
51
52def skip_test(reason=""):
53    """Signal that a test should be skipped and optionally print why.
54
55    Keyword arguments:
56      reason -- Reason why the test failed. Output is omitted if empty.
57    """
58
59    if reason:
60        print "Skipping test: %s" % reason
61    sys.exit(2)
62
63def has_sim_object(name):
64    """Test if a SimObject exists in the simulator.
65
66    Arguments:
67      name -- Name of SimObject (string)
68
69    Returns: True if the object exists, False otherwise.
70    """
71
72    try:
73        cls = getattr(m5.objects, name)
74        return issubclass(cls, m5.objects.SimObject)
75    except AttributeError:
76        return False
77
78def require_sim_object(name, fatal=False):
79    """Test if a SimObject exists and abort/skip test if not.
80
81    Arguments:
82      name -- Name of SimObject (string)
83
84    Keyword arguments:
85      fatal -- Set to True to indicate that the test should fail
86               instead of being skipped.
87    """
88
89    if has_sim_object(name):
90        return
91    else:
92        msg = "Test requires the '%s' SimObject." % name
93        if fatal:
94            m5.fatal(msg)
95        else:
96            skip_test(msg)
97
98
99def require_file(path, fatal=False, mode=os.F_OK):
100    """Test if a file exists and abort/skip test if not.
101
102    Arguments:
103      path -- File to test for.
104
105    Keyword arguments:
106      fatal -- Set to True to indicate that the test should fail
107               instead of being skipped.
108      modes -- Mode to test for, default to existence. See the
109               Python documentation for os.access().
110    """
111
112    if os.access(path, mode):
113        return
114    else:
115        msg = "Test requires '%s'" % path
116        if not os.path.exists(path):
117            msg += " which does not exist."
118        else:
119            msg += " which has incorrect permissions."
120
121        if fatal:
122            m5.fatal(msg)
123        else:
124            skip_test(msg)
125
126def require_kvm(kvm_dev="/dev/kvm", fatal=False):
127    """Test if KVM is available.
128
129    Keyword arguments:
130      kvm_dev -- Device to test (normally /dev/kvm)
131      fatal -- Set to True to indicate that the test should fail
132               instead of being skipped.
133    """
134
135    require_sim_object("BaseKvmCPU", fatal=fatal)
136    require_file(kvm_dev, fatal=fatal, mode=os.R_OK | os.W_OK)
137
138def run_test(root):
139    """Default run_test implementations. Scripts can override it."""
140
141    # instantiate configuration
142    m5.instantiate()
143
144    # simulate until program terminates
145    exit_event = m5.simulate(maxtick)
146    print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
147
148# Since we're in batch mode, dont allow tcp socket connections
149m5.disableAllListeners()
150
151# single "path" arg encodes everything we need to know about test
152(category, mode, name, isa, opsys, config) = sys.argv[1].split('/')[-6:]
153
154# find path to directory containing this file
155tests_root = os.path.dirname(__file__)
156test_progs = os.environ.get('M5_TEST_PROGS', '/dist/m5/regression/test-progs')
157if not os.path.isdir(test_progs):
158    test_progs = joinpath(tests_root, 'test-progs')
159
160# generate path to binary file
161def binpath(app, file=None):
162    # executable has same name as app unless specified otherwise
163    if not file:
164        file = app
165    return joinpath(test_progs, app, 'bin', isa, opsys, file)
166
167# generate path to input file
168def inputpath(app, file=None):
169    # input file has same name as app unless specified otherwise
170    if not file:
171        file = app
172    return joinpath(test_progs, app, 'input', file)
173
174def srcpath(path):
175    """Path to file in gem5's source tree"""
176    return joinpath(os.path.dirname(__file__), "..", path)
177
178# build configuration
179sys.path.append(joinpath(tests_root, 'configs'))
180test_filename = config
181# for ruby configurations, remove the protocol name from the test filename
182if re.search('-ruby', test_filename):
183    test_filename = test_filename.split('-ruby')[0]+'-ruby'
184execfile(joinpath(tests_root, 'configs', test_filename + '.py'))
185
186# set default maxtick... script can override
187# -1 means run forever
188maxtick = m5.MaxTick
189
190# tweak configuration for specific test
191sys.path.append(joinpath(tests_root, category, mode, name))
192execfile(joinpath(tests_root, category, mode, name, 'test.py'))
193
194# Initialize all CPUs in a system
195def initCPUs(sys):
196    def initCPU(cpu):
197        # We might actually have a MemTest object or something similar
198        # here that just pretends to be a CPU.
199        try:
200            cpu.createThreads()
201        except:
202            pass
203
204    # The CPU attribute doesn't exist in some cases, e.g. the Ruby
205    # testers.
206    if not hasattr(sys, "cpu"):
207        return
208
209    # The CPU can either be a list of CPUs or a single object.
210    if isinstance(sys.cpu, list):
211        [ initCPU(cpu) for cpu in sys.cpu ]
212    else:
213        initCPU(sys.cpu)
214
215# We might be creating a single system or a dual system. Try
216# initializing the CPUs in all known system attributes.
217for sysattr in [ "system", "testsys", "drivesys" ]:
218    if hasattr(root, sysattr):
219        initCPUs(getattr(root, sysattr))
220
221run_test(root)
222