simulate.py revision 7532
14762Snate@binkert.org# Copyright (c) 2005 The Regents of The University of Michigan 24762Snate@binkert.org# All rights reserved. 34762Snate@binkert.org# 44762Snate@binkert.org# Redistribution and use in source and binary forms, with or without 54762Snate@binkert.org# modification, are permitted provided that the following conditions are 64762Snate@binkert.org# met: redistributions of source code must retain the above copyright 74762Snate@binkert.org# notice, this list of conditions and the following disclaimer; 84762Snate@binkert.org# redistributions in binary form must reproduce the above copyright 94762Snate@binkert.org# notice, this list of conditions and the following disclaimer in the 104762Snate@binkert.org# documentation and/or other materials provided with the distribution; 114762Snate@binkert.org# neither the name of the copyright holders nor the names of its 124762Snate@binkert.org# contributors may be used to endorse or promote products derived from 134762Snate@binkert.org# this software without specific prior written permission. 144762Snate@binkert.org# 154762Snate@binkert.org# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 164762Snate@binkert.org# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 174762Snate@binkert.org# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 184762Snate@binkert.org# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 194762Snate@binkert.org# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 204762Snate@binkert.org# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 214762Snate@binkert.org# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 224762Snate@binkert.org# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 234762Snate@binkert.org# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 244762Snate@binkert.org# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 254762Snate@binkert.org# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 264762Snate@binkert.org# 274762Snate@binkert.org# Authors: Nathan Binkert 284762Snate@binkert.org# Steve Reinhardt 294762Snate@binkert.org 304762Snate@binkert.orgimport atexit 314762Snate@binkert.orgimport os 324762Snate@binkert.orgimport sys 334762Snate@binkert.org 344762Snate@binkert.org# import the SWIG-wrapped main C++ functions 354762Snate@binkert.orgimport internal 366001Snate@binkert.orgimport core 376001Snate@binkert.orgimport stats 384762Snate@binkert.orgfrom main import options 394762Snate@binkert.orgimport SimObject 404762Snate@binkert.orgimport ticks 414851Snate@binkert.orgimport objects 427525Ssteve.reinhardt@amd.comfrom util import fatal 434762Snate@binkert.org 446654Snate@binkert.org# define a MaxTick parameter 456654Snate@binkert.orgMaxTick = 2**63 - 1 466654Snate@binkert.org 474762Snate@binkert.org# The final hook to generate .ini files. Called from the user script 484762Snate@binkert.org# once the config is built. 497531Ssteve.reinhardt@amd.comdef instantiate(ckpt_dir=None): 507525Ssteve.reinhardt@amd.com root = objects.Root.getInstance() 517525Ssteve.reinhardt@amd.com 527525Ssteve.reinhardt@amd.com if not root: 537525Ssteve.reinhardt@amd.com fatal("Need to instantiate Root() before calling instantiate()") 547525Ssteve.reinhardt@amd.com 554762Snate@binkert.org # we need to fix the global frequency 564762Snate@binkert.org ticks.fixGlobalFrequency() 574762Snate@binkert.org 587528Ssteve.reinhardt@amd.com # Make sure SimObject-valued params are in the configuration 597528Ssteve.reinhardt@amd.com # hierarchy so we catch them with future descendants() walks 607528Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.adoptOrphanParams() 617528Ssteve.reinhardt@amd.com 627527Ssteve.reinhardt@amd.com # Unproxy in sorted order for determinism 637527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.unproxyParams() 645037Smilesck@eecs.umich.edu 655773Snate@binkert.org if options.dump_config: 665773Snate@binkert.org ini_file = file(os.path.join(options.outdir, options.dump_config), 'w') 677527Ssteve.reinhardt@amd.com # Print ini sections in sorted order for easier diffing 687527Ssteve.reinhardt@amd.com for obj in sorted(root.descendants(), key=lambda o: o.path()): 697527Ssteve.reinhardt@amd.com obj.print_ini(ini_file) 705773Snate@binkert.org ini_file.close() 714762Snate@binkert.org 724762Snate@binkert.org # Initialize the global statistics 736001Snate@binkert.org stats.initSimStats() 744762Snate@binkert.org 754762Snate@binkert.org # Create the C++ sim objects and connect ports 767527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.createCCObject() 777527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.connectPorts() 784762Snate@binkert.org 794762Snate@binkert.org # Do a second pass to finish initializing the sim objects 807527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.init() 814762Snate@binkert.org 824762Snate@binkert.org # Do a third pass to initialize statistics 837527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.regStats() 847527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.regFormulas() 854762Snate@binkert.org 866001Snate@binkert.org # We're done registering statistics. Enable the stats package now. 876001Snate@binkert.org stats.enable() 884762Snate@binkert.org 897531Ssteve.reinhardt@amd.com # Restore checkpoint (if any) 907531Ssteve.reinhardt@amd.com if ckpt_dir: 917532Ssteve.reinhardt@amd.com ckpt = internal.core.getCheckpoint(ckpt_dir) 927532Ssteve.reinhardt@amd.com internal.core.unserializeGlobals(ckpt); 937532Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.loadState(ckpt) 947531Ssteve.reinhardt@amd.com need_resume.append(root) 957532Ssteve.reinhardt@amd.com else: 967532Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.initState() 977531Ssteve.reinhardt@amd.com 984762Snate@binkert.org # Reset to put the stats in a consistent state. 996001Snate@binkert.org stats.reset() 1004762Snate@binkert.org 1014762Snate@binkert.orgdef doDot(root): 1024762Snate@binkert.org dot = pydot.Dot() 1034762Snate@binkert.org instance.outputDot(dot) 1044762Snate@binkert.org dot.orientation = "portrait" 1054762Snate@binkert.org dot.size = "8.5,11" 1064762Snate@binkert.org dot.ranksep="equally" 1074762Snate@binkert.org dot.rank="samerank" 1084762Snate@binkert.org dot.write("config.dot") 1094762Snate@binkert.org dot.write_ps("config.ps") 1104762Snate@binkert.org 1114762Snate@binkert.orgneed_resume = [] 1124762Snate@binkert.orgneed_startup = True 1134762Snate@binkert.orgdef simulate(*args, **kwargs): 1144762Snate@binkert.org global need_resume, need_startup 1154762Snate@binkert.org 1164762Snate@binkert.org if need_startup: 1177527Ssteve.reinhardt@amd.com root = objects.Root.getInstance() 1187527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.startup() 1194762Snate@binkert.org need_startup = False 1204762Snate@binkert.org 1214762Snate@binkert.org for root in need_resume: 1224762Snate@binkert.org resume(root) 1234762Snate@binkert.org need_resume = [] 1244762Snate@binkert.org 1254762Snate@binkert.org return internal.event.simulate(*args, **kwargs) 1264762Snate@binkert.org 1274762Snate@binkert.org# Export curTick to user script. 1284762Snate@binkert.orgdef curTick(): 1294762Snate@binkert.org return internal.core.cvar.curTick 1304762Snate@binkert.org 1314762Snate@binkert.org# Python exit handlers happen in reverse order. We want to dump stats last. 1324762Snate@binkert.orgatexit.register(internal.stats.dump) 1334762Snate@binkert.org 1344762Snate@binkert.org# register our C++ exit callback function with Python 1354762Snate@binkert.orgatexit.register(internal.core.doExitCleanup) 1364762Snate@binkert.org 1374762Snate@binkert.org# This loops until all objects have been fully drained. 1384762Snate@binkert.orgdef doDrain(root): 1394762Snate@binkert.org all_drained = drain(root) 1404762Snate@binkert.org while (not all_drained): 1414762Snate@binkert.org all_drained = drain(root) 1424762Snate@binkert.org 1434762Snate@binkert.org# Tries to drain all objects. Draining might not be completed unless 1444762Snate@binkert.org# all objects return that they are drained on the first call. This is 1454762Snate@binkert.org# because as objects drain they may cause other objects to no longer 1464762Snate@binkert.org# be drained. 1474762Snate@binkert.orgdef drain(root): 1484762Snate@binkert.org all_drained = False 1494762Snate@binkert.org drain_event = internal.event.createCountedDrain() 1507527Ssteve.reinhardt@amd.com unready_objs = sum(obj.drain(drain_event) for obj in root.descendants()) 1514762Snate@binkert.org # If we've got some objects that can't drain immediately, then simulate 1527527Ssteve.reinhardt@amd.com if unready_objs > 0: 1537527Ssteve.reinhardt@amd.com drain_event.setCount(unready_objs) 1544762Snate@binkert.org simulate() 1554762Snate@binkert.org else: 1564762Snate@binkert.org all_drained = True 1574762Snate@binkert.org internal.event.cleanupCountedDrain(drain_event) 1584762Snate@binkert.org return all_drained 1594762Snate@binkert.org 1604762Snate@binkert.orgdef resume(root): 1617527Ssteve.reinhardt@amd.com for obj in root.descendants(): obj.resume() 1624762Snate@binkert.org 1637525Ssteve.reinhardt@amd.comdef checkpoint(dir): 1647525Ssteve.reinhardt@amd.com root = objects.Root.getInstance() 1654762Snate@binkert.org if not isinstance(root, objects.Root): 1664762Snate@binkert.org raise TypeError, "Checkpoint must be called on a root object." 1674762Snate@binkert.org doDrain(root) 1684762Snate@binkert.org print "Writing checkpoint" 1694859Snate@binkert.org internal.core.serializeAll(dir) 1704762Snate@binkert.org resume(root) 1714762Snate@binkert.org 1724762Snate@binkert.orgdef changeToAtomic(system): 1734762Snate@binkert.org if not isinstance(system, (objects.Root, objects.System)): 1744762Snate@binkert.org raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \ 1754762Snate@binkert.org (type(system), objects.Root, objects.System) 1764945Snate@binkert.org if system.getMemoryMode() != objects.params.atomic: 1774762Snate@binkert.org doDrain(system) 1784762Snate@binkert.org print "Changing memory mode to atomic" 1797527Ssteve.reinhardt@amd.com for obj in system.descendants(): 1807527Ssteve.reinhardt@amd.com obj.changeTiming(objects.params.atomic) 1814762Snate@binkert.org 1824762Snate@binkert.orgdef changeToTiming(system): 1834762Snate@binkert.org if not isinstance(system, (objects.Root, objects.System)): 1844762Snate@binkert.org raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \ 1854762Snate@binkert.org (type(system), objects.Root, objects.System) 1864762Snate@binkert.org 1874945Snate@binkert.org if system.getMemoryMode() != objects.params.timing: 1884762Snate@binkert.org doDrain(system) 1894762Snate@binkert.org print "Changing memory mode to timing" 1907527Ssteve.reinhardt@amd.com for obj in system.descendants(): 1917527Ssteve.reinhardt@amd.com obj.changeTiming(objects.params.timing) 1924762Snate@binkert.org 1934762Snate@binkert.orgdef switchCpus(cpuList): 1944762Snate@binkert.org print "switching cpus" 1954762Snate@binkert.org if not isinstance(cpuList, list): 1964762Snate@binkert.org raise RuntimeError, "Must pass a list to this function" 1974946Snate@binkert.org for item in cpuList: 1984946Snate@binkert.org if not isinstance(item, tuple) or len(item) != 2: 1994762Snate@binkert.org raise RuntimeError, "List must have tuples of (oldCPU,newCPU)" 2004762Snate@binkert.org 2014946Snate@binkert.org for old_cpu, new_cpu in cpuList: 2024946Snate@binkert.org if not isinstance(old_cpu, objects.BaseCPU): 2034946Snate@binkert.org raise TypeError, "%s is not of type BaseCPU" % old_cpu 2044946Snate@binkert.org if not isinstance(new_cpu, objects.BaseCPU): 2054946Snate@binkert.org raise TypeError, "%s is not of type BaseCPU" % new_cpu 2064762Snate@binkert.org 2074946Snate@binkert.org # Now all of the CPUs are ready to be switched out 2084946Snate@binkert.org for old_cpu, new_cpu in cpuList: 2094946Snate@binkert.org old_cpu._ccObject.switchOut() 2104762Snate@binkert.org 2114946Snate@binkert.org for old_cpu, new_cpu in cpuList: 2124946Snate@binkert.org new_cpu.takeOverFrom(old_cpu) 2135523Snate@binkert.org 2145523Snate@binkert.orgfrom internal.core import disableAllListeners 215