1# Copyright (c) 2006 The Regents of The University of Michigan
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

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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: Lisa Hsu
28
29from os import getcwd
30from os.path import join as joinpath
31import m5
32from m5.objects import *
33m5.AddToPath('../common')
34from Caches import L1Cache
35
36def setCPUClass(options):
37
38 atomic = False

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60def run(options, root, testsys, cpu_class):
61 if options.maxtick:
62 maxtick = options.maxtick
63 elif options.maxtime:
64 simtime = int(options.maxtime * root.clock.value)
65 print "simulating for: ", simtime
66 maxtick = simtime
67 else:
67 maxtick = -1
68 maxtick = m5.MaxTick
69
70 if options.checkpoint_dir:
71 cptdir = options.checkpoint_dir
72 else:
73 cptdir = getcwd()
74
75 np = options.num_cpus
76 max_checkpoints = options.max_checkpoints

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137 cpts.sort(lambda a,b: cmp(long(a), long(b)))
138
139 cpt_num = options.checkpoint_restore
140
141 if cpt_num > len(cpts):
142 m5.panic('Checkpoint %d not found' % cpt_num)
143
144 m5.restoreCheckpoint(root,
144 "/".join([cptdir, "cpt.%s" % cpts[cpt_num - 1]]))
145 joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1]))
146
147 if options.standard_switch or cpu_class:
148 exit_event = m5.simulate(10000)
149
150 ## when you change to Timing (or Atomic), you halt the system given
151 ## as argument. When you are finished with the system changes
152 ## (including switchCpus), you must resume the system manually.
153 ## You DON'T need to resume after just switching CPUs if you haven't

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172 when = int(when)
173 period = int(period)
174
175 exit_event = m5.simulate(when)
176 while exit_event.getCause() == "checkpoint":
177 exit_event = m5.simulate(when - m5.curTick())
178
179 if exit_event.getCause() == "simulate() limit reached":
179 m5.checkpoint(root, "/".join([cptdir,"cpt.%d"]))
180 m5.checkpoint(root, joinpath(cptdir, "cpt.%d"))
181 num_checkpoints += 1
182
183 sim_ticks = when
184 exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
185 while num_checkpoints < max_checkpoints:
185 if (sim_ticks + period) > maxtick and maxtick != -1:
186 if (sim_ticks + period) > maxtick:
187 exit_event = m5.simulate(maxtick - sim_ticks)
188 exit_cause = exit_event.getCause()
189 break
190 else:
191 exit_event = m5.simulate(period)
192 sim_ticks += period
193 while exit_event.getCause() == "checkpoint":
194 exit_event = m5.simulate(sim_ticks - m5.curTick())
195 if exit_event.getCause() == "simulate() limit reached":
195 m5.checkpoint(root, "/".join([cptdir,"cpt.%d"]))
196 m5.checkpoint(root, joinpath(cptdir, "cpt.%d"))
197 num_checkpoints += 1
198
199 else: #no checkpoints being taken via this script
200 exit_event = m5.simulate(maxtick)
201
202 while exit_event.getCause() == "checkpoint":
202 m5.checkpoint(root, "/".join([cptdir,"cpt.%d"]))
203 m5.checkpoint(root, joinpath(cptdir, "cpt.%d"))
204 num_checkpoints += 1
205 if num_checkpoints == max_checkpoints:
206 exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
207 break
208
208 if maxtick == -1:
209 exit_event = m5.simulate(maxtick)
210 else:
211 exit_event = m5.simulate(maxtick - m5.curTick())
212
209 exit_event = m5.simulate(maxtick - m5.curTick())
210 exit_cause = exit_event.getCause()
211
212 if exit_cause == '':
213 exit_cause = exit_event.getCause()
214 print 'Exiting @ cycle %i because %s' % (m5.curTick(), exit_cause)
215