1# Copyright (c) 2005 The Regents of The University of Michigan 2# Copyright (c) 2010 Advanced Micro Devices, Inc. 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# Steve Reinhardt 30 31import atexit 32import os 33import sys
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34import json
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34 35# import the SWIG-wrapped main C++ functions 36import internal 37import core 38import stats 39import SimObject 40import ticks 41import objects 42from util import fatal 43from util import attrdict 44 45# define a MaxTick parameter 46MaxTick = 2**63 - 1 47 48# The final hook to generate .ini files. Called from the user script 49# once the config is built. 50def instantiate(ckpt_dir=None): 51 from m5 import options 52 53 root = objects.Root.getInstance() 54 55 if not root: 56 fatal("Need to instantiate Root() before calling instantiate()") 57 58 # we need to fix the global frequency 59 ticks.fixGlobalFrequency() 60 61 # Make sure SimObject-valued params are in the configuration 62 # hierarchy so we catch them with future descendants() walks 63 for obj in root.descendants(): obj.adoptOrphanParams() 64 65 # Unproxy in sorted order for determinism 66 for obj in root.descendants(): obj.unproxyParams() 67 68 if options.dump_config: 69 ini_file = file(os.path.join(options.outdir, options.dump_config), 'w') 70 # Print ini sections in sorted order for easier diffing 71 for obj in sorted(root.descendants(), key=lambda o: o.path()): 72 obj.print_ini(ini_file) 73 ini_file.close() 74 75 if options.json_config:
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77 json_file = file(os.path.join(options.outdir, options.json_config), 'w')
78 d = root.get_config_as_dict()
79 json.dump(d, json_file, indent=4)
80 json_file.close()
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76 try: 77 import json 78 json_file = file(os.path.join(options.outdir, options.json_config), 'w') 79 d = root.get_config_as_dict() 80 json.dump(d, json_file, indent=4) 81 json_file.close() 82 except ImportError: 83 pass |
84 85 86 # Initialize the global statistics 87 stats.initSimStats() 88 89 # Create the C++ sim objects and connect ports 90 for obj in root.descendants(): obj.createCCObject() 91 for obj in root.descendants(): obj.connectPorts() 92 93 # Do a second pass to finish initializing the sim objects 94 for obj in root.descendants(): obj.init() 95 96 # Do a third pass to initialize statistics 97 for obj in root.descendants(): obj.regStats() 98 for obj in root.descendants(): obj.regFormulas() 99 100 # We're done registering statistics. Enable the stats package now. 101 stats.enable() 102 103 # Restore checkpoint (if any) 104 if ckpt_dir: 105 ckpt = internal.core.getCheckpoint(ckpt_dir) 106 internal.core.unserializeGlobals(ckpt); 107 for obj in root.descendants(): obj.loadState(ckpt) 108 need_resume.append(root) 109 else: 110 for obj in root.descendants(): obj.initState() 111 112 # Reset to put the stats in a consistent state. 113 stats.reset() 114 115def doDot(root): 116 dot = pydot.Dot() 117 instance.outputDot(dot) 118 dot.orientation = "portrait" 119 dot.size = "8.5,11" 120 dot.ranksep="equally" 121 dot.rank="samerank" 122 dot.write("config.dot") 123 dot.write_ps("config.ps") 124 125need_resume = [] 126need_startup = True 127def simulate(*args, **kwargs): 128 global need_resume, need_startup 129 130 if need_startup: 131 root = objects.Root.getInstance() 132 for obj in root.descendants(): obj.startup() 133 need_startup = False 134 135 for root in need_resume: 136 resume(root) 137 need_resume = [] 138 139 return internal.event.simulate(*args, **kwargs) 140 141# Export curTick to user script. 142def curTick(): 143 return internal.core.curTick() 144 145# Python exit handlers happen in reverse order. We want to dump stats last. 146atexit.register(stats.dump) 147 148# register our C++ exit callback function with Python 149atexit.register(internal.core.doExitCleanup) 150 151# This loops until all objects have been fully drained. 152def doDrain(root): 153 all_drained = drain(root) 154 while (not all_drained): 155 all_drained = drain(root) 156 157# Tries to drain all objects. Draining might not be completed unless 158# all objects return that they are drained on the first call. This is 159# because as objects drain they may cause other objects to no longer 160# be drained. 161def drain(root): 162 all_drained = False 163 drain_event = internal.event.createCountedDrain() 164 unready_objs = sum(obj.drain(drain_event) for obj in root.descendants()) 165 # If we've got some objects that can't drain immediately, then simulate 166 if unready_objs > 0: 167 drain_event.setCount(unready_objs) 168 simulate() 169 else: 170 all_drained = True 171 internal.event.cleanupCountedDrain(drain_event) 172 return all_drained 173 174def resume(root): 175 for obj in root.descendants(): obj.resume() 176 177def checkpoint(dir): 178 root = objects.Root.getInstance() 179 if not isinstance(root, objects.Root): 180 raise TypeError, "Checkpoint must be called on a root object." 181 doDrain(root) 182 print "Writing checkpoint" 183 internal.core.serializeAll(dir) 184 resume(root) 185 186def changeToAtomic(system): 187 if not isinstance(system, (objects.Root, objects.System)): 188 raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \ 189 (type(system), objects.Root, objects.System) 190 if system.getMemoryMode() != objects.params.atomic: 191 doDrain(system) 192 print "Changing memory mode to atomic" 193 for obj in system.descendants(): 194 obj.changeTiming(objects.params.atomic) 195 196def changeToTiming(system): 197 if not isinstance(system, (objects.Root, objects.System)): 198 raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \ 199 (type(system), objects.Root, objects.System) 200 201 if system.getMemoryMode() != objects.params.timing: 202 doDrain(system) 203 print "Changing memory mode to timing" 204 for obj in system.descendants(): 205 obj.changeTiming(objects.params.timing) 206 207def switchCpus(cpuList): 208 print "switching cpus" 209 if not isinstance(cpuList, list): 210 raise RuntimeError, "Must pass a list to this function" 211 for item in cpuList: 212 if not isinstance(item, tuple) or len(item) != 2: 213 raise RuntimeError, "List must have tuples of (oldCPU,newCPU)" 214 215 for old_cpu, new_cpu in cpuList: 216 if not isinstance(old_cpu, objects.BaseCPU): 217 raise TypeError, "%s is not of type BaseCPU" % old_cpu 218 if not isinstance(new_cpu, objects.BaseCPU): 219 raise TypeError, "%s is not of type BaseCPU" % new_cpu 220 221 # Now all of the CPUs are ready to be switched out 222 for old_cpu, new_cpu in cpuList: 223 old_cpu._ccObject.switchOut() 224 225 for old_cpu, new_cpu in cpuList: 226 new_cpu.takeOverFrom(old_cpu) 227 228from internal.core import disableAllListeners
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