This changeset adds a set of tests that stress the CPU switching code. It adds the following test configurations: * tsunami-switcheroo-full -- Alpha system (atomic, timing, O3) * realview-switcheroo-atomic -- ARM system (atomic<->atomic) * realview-switcheroo-timing -- ARM system (timing<->timing) * realview-switcheroo-o3 -- ARM system (O3<->O3) * realview-switcheroo-full -- ARM system (atomic, timing, O3) Reference data is provided for the 10.linux-boot test case. All of the tests trigger a CPU switch once per millisecond during the boot process. The in-order CPU model was not included in any of the tests as it does not support CPU handover.
173 lines
5.9 KiB
Python
173 lines
5.9 KiB
Python
# Copyright (c) 2012 ARM Limited
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# All rights reserved
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Copyright (c) 2006-2007 The Regents of The University of Michigan
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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: Steve Reinhardt
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import os
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import sys
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import re
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import string
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from os.path import join as joinpath
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import m5
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def skip_test(reason=""):
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"""Signal that a test should be skipped and optionally print why.
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Keyword arguments:
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reason -- Reason why the test failed. Output is omitted if empty.
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"""
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if reason:
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print "Skipping test: %s" % reason
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sys.exit(2)
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def has_sim_object(name):
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"""Test if a SimObject exists in the simulator.
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Arguments:
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name -- Name of SimObject (string)
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Returns: True if the object exists, False otherwise.
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"""
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try:
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cls = getattr(m5.objects, name)
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return issubclass(cls, m5.objects.SimObject)
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except AttributeError:
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return False
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def require_sim_object(name, fatal=False):
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"""Test if a SimObject exists and abort/skip test if not.
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Arguments:
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name -- Name of SimObject (string)
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Keyword arguments:
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fatal -- Set to True to indicate that the test should fail
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instead of being skipped.
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"""
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if has_sim_object(name):
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return
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else:
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msg = "Test requires the '%s' SimObject." % name
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if fatal:
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m5.fatal(msg)
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else:
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skip_test(msg)
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def run_test(root):
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"""Default run_test implementations. Scripts can override it."""
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# instantiate configuration
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m5.instantiate()
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# simulate until program terminates
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exit_event = m5.simulate(maxtick)
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print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
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# Since we're in batch mode, dont allow tcp socket connections
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m5.disableAllListeners()
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# single "path" arg encodes everything we need to know about test
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(category, mode, name, isa, opsys, config) = sys.argv[1].split('/')[-6:]
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# find path to directory containing this file
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tests_root = os.path.dirname(__file__)
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test_progs = os.environ.get('M5_TEST_PROGS', '/dist/m5/regression/test-progs')
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if not os.path.isdir(test_progs):
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test_progs = joinpath(tests_root, 'test-progs')
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# generate path to binary file
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def binpath(app, file=None):
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# executable has same name as app unless specified otherwise
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if not file:
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file = app
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return joinpath(test_progs, app, 'bin', isa, opsys, file)
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# generate path to input file
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def inputpath(app, file=None):
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# input file has same name as app unless specified otherwise
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if not file:
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file = app
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return joinpath(test_progs, app, 'input', file)
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# build configuration
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sys.path.append(joinpath(tests_root, 'configs'))
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test_filename = config
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# for ruby configurations, remove the protocol name from the test filename
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if re.search('-ruby', test_filename):
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test_filename = test_filename.split('-ruby')[0]+'-ruby'
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execfile(joinpath(tests_root, 'configs', test_filename + '.py'))
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# set default maxtick... script can override
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# -1 means run forever
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maxtick = m5.MaxTick
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# tweak configuration for specific test
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sys.path.append(joinpath(tests_root, category, mode, name))
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execfile(joinpath(tests_root, category, mode, name, 'test.py'))
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# Initialize all CPUs in a system
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def initCPUs(sys):
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def initCPU(cpu):
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# We might actually have a MemTest object or something similar
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# here that just pretends to be a CPU.
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if isinstance(cpu, BaseCPU):
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cpu.createThreads()
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# The CPU attribute doesn't exist in some cases, e.g. the Ruby
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# testers.
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if not hasattr(sys, "cpu"):
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return
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# The CPU can either be a list of CPUs or a single object.
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if isinstance(sys.cpu, list):
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[ initCPU(cpu) for cpu in sys.cpu ]
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else:
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initCPU(sys.cpu)
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# We might be creating a single system or a dual system. Try
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# initializing the CPUs in all known system attributes.
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for sysattr in [ "system", "testsys", "drivesys" ]:
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if hasattr(root, sysattr):
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initCPUs(getattr(root, sysattr))
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run_test(root)
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