4da3938ed9
--HG-- extra : convert_revision : 7530cf140844e18cc26df80057f8760f29ec952b
210 lines
7.8 KiB
Python
210 lines
7.8 KiB
Python
# Copyright (c) 2005 The Regents of The University of Michigan
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are
|
|
# met: redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer;
|
|
# redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution;
|
|
# neither the name of the copyright holders nor the names of its
|
|
# contributors may be used to endorse or promote products derived from
|
|
# this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
# Authors: Nathan Binkert
|
|
# Steve Reinhardt
|
|
|
|
import atexit, os, sys
|
|
|
|
# import the SWIG-wrapped main C++ functions
|
|
import cc_main
|
|
# import a few SWIG-wrapped items (those that are likely to be used
|
|
# directly by user scripts) completely into this module for
|
|
# convenience
|
|
from cc_main import simulate, SimLoopExitEvent
|
|
|
|
# import the m5 compile options
|
|
import defines
|
|
|
|
# define this here so we can use it right away if necessary
|
|
def panic(string):
|
|
print >>sys.stderr, 'panic:', string
|
|
sys.exit(1)
|
|
|
|
# force scalars to one-element lists for uniformity
|
|
def makeList(objOrList):
|
|
if isinstance(objOrList, list):
|
|
return objOrList
|
|
return [objOrList]
|
|
|
|
# Prepend given directory to system module search path. We may not
|
|
# need this anymore if we can structure our config library more like a
|
|
# Python package.
|
|
def AddToPath(path):
|
|
# if it's a relative path and we know what directory the current
|
|
# python script is in, make the path relative to that directory.
|
|
if not os.path.isabs(path) and sys.path[0]:
|
|
path = os.path.join(sys.path[0], path)
|
|
path = os.path.realpath(path)
|
|
# sys.path[0] should always refer to the current script's directory,
|
|
# so place the new dir right after that.
|
|
sys.path.insert(1, path)
|
|
|
|
# make a SmartDict out of the build options for our local use
|
|
import smartdict
|
|
build_env = smartdict.SmartDict()
|
|
build_env.update(defines.m5_build_env)
|
|
|
|
# make a SmartDict out of the OS environment too
|
|
env = smartdict.SmartDict()
|
|
env.update(os.environ)
|
|
|
|
# The final hook to generate .ini files. Called from the user script
|
|
# once the config is built.
|
|
def instantiate(root):
|
|
params.ticks_per_sec = float(root.clock.frequency)
|
|
root.unproxy_all()
|
|
# ugly temporary hack to get output to config.ini
|
|
sys.stdout = file(os.path.join(options.outdir, 'config.ini'), 'w')
|
|
root.print_ini()
|
|
sys.stdout.close() # close config.ini
|
|
sys.stdout = sys.__stdout__ # restore to original
|
|
cc_main.loadIniFile(resolveSimObject) # load config.ini into C++
|
|
root.createCCObject()
|
|
root.connectPorts()
|
|
cc_main.finalInit()
|
|
noDot = True # temporary until we fix dot
|
|
if not noDot:
|
|
dot = pydot.Dot()
|
|
instance.outputDot(dot)
|
|
dot.orientation = "portrait"
|
|
dot.size = "8.5,11"
|
|
dot.ranksep="equally"
|
|
dot.rank="samerank"
|
|
dot.write("config.dot")
|
|
dot.write_ps("config.ps")
|
|
|
|
# Export curTick to user script.
|
|
def curTick():
|
|
return cc_main.cvar.curTick
|
|
|
|
# register our C++ exit callback function with Python
|
|
atexit.register(cc_main.doExitCleanup)
|
|
|
|
# This loops until all objects have been fully drained.
|
|
def doDrain(root):
|
|
all_drained = drain(root)
|
|
while (not all_drained):
|
|
all_drained = drain(root)
|
|
|
|
# Tries to drain all objects. Draining might not be completed unless
|
|
# all objects return that they are drained on the first call. This is
|
|
# because as objects drain they may cause other objects to no longer
|
|
# be drained.
|
|
def drain(root):
|
|
all_drained = False
|
|
drain_event = cc_main.createCountedDrain()
|
|
unready_objects = root.startDrain(drain_event, True)
|
|
# If we've got some objects that can't drain immediately, then simulate
|
|
if unready_objects > 0:
|
|
drain_event.setCount(unready_objects)
|
|
simulate()
|
|
else:
|
|
all_drained = True
|
|
cc_main.cleanupCountedDrain(drain_event)
|
|
return all_drained
|
|
|
|
def resume(root):
|
|
root.resume()
|
|
|
|
def checkpoint(root, dir):
|
|
if not isinstance(root, objects.Root):
|
|
raise TypeError, "Object is not a root object. Checkpoint must be called on a root object."
|
|
doDrain(root)
|
|
print "Writing checkpoint"
|
|
cc_main.serializeAll(dir)
|
|
resume(root)
|
|
|
|
def restoreCheckpoint(root, dir):
|
|
print "Restoring from checkpoint"
|
|
cc_main.unserializeAll(dir)
|
|
resume(root)
|
|
|
|
def changeToAtomic(system):
|
|
if not isinstance(system, objects.Root) and not isinstance(system, objects.System):
|
|
raise TypeError, "Object is not a root or system object. Checkpoint must be "
|
|
"called on a root object."
|
|
doDrain(system)
|
|
print "Changing memory mode to atomic"
|
|
system.changeTiming(cc_main.SimObject.Atomic)
|
|
|
|
def changeToTiming(system):
|
|
if not isinstance(system, objects.Root) and not isinstance(system, objects.System):
|
|
raise TypeError, "Object is not a root or system object. Checkpoint must be "
|
|
"called on a root object."
|
|
doDrain(system)
|
|
print "Changing memory mode to timing"
|
|
system.changeTiming(cc_main.SimObject.Timing)
|
|
|
|
def switchCpus(cpuList):
|
|
print "switching cpus"
|
|
if not isinstance(cpuList, list):
|
|
raise RuntimeError, "Must pass a list to this function"
|
|
for i in cpuList:
|
|
if not isinstance(i, tuple):
|
|
raise RuntimeError, "List must have tuples of (oldCPU,newCPU)"
|
|
|
|
[old_cpus, new_cpus] = zip(*cpuList)
|
|
|
|
for cpu in old_cpus:
|
|
if not isinstance(cpu, objects.BaseCPU):
|
|
raise TypeError, "%s is not of type BaseCPU", cpu
|
|
for cpu in new_cpus:
|
|
if not isinstance(cpu, objects.BaseCPU):
|
|
raise TypeError, "%s is not of type BaseCPU", cpu
|
|
|
|
# Drain all of the individual CPUs
|
|
drain_event = cc_main.createCountedDrain()
|
|
unready_cpus = 0
|
|
for old_cpu in old_cpus:
|
|
unready_cpus += old_cpu.startDrain(drain_event, False)
|
|
# If we've got some objects that can't drain immediately, then simulate
|
|
if unready_cpus > 0:
|
|
drain_event.setCount(unready_cpus)
|
|
simulate()
|
|
cc_main.cleanupCountedDrain(drain_event)
|
|
# Now all of the CPUs are ready to be switched out
|
|
for old_cpu in old_cpus:
|
|
old_cpu._ccObject.switchOut()
|
|
index = 0
|
|
for new_cpu in new_cpus:
|
|
new_cpu.takeOverFrom(old_cpus[index])
|
|
new_cpu._ccObject.resume()
|
|
index += 1
|
|
|
|
# Since we have so many mutual imports in this package, we should:
|
|
# 1. Put all intra-package imports at the *bottom* of the file, unless
|
|
# they're absolutely needed before that (for top-level statements
|
|
# or class attributes). Imports of "trivial" packages that don't
|
|
# import other packages (e.g., 'smartdict') can be at the top.
|
|
# 2. Never use 'from foo import *' on an intra-package import since
|
|
# you can get the wrong result if foo is only partially imported
|
|
# at the point you do that (i.e., because foo is in the middle of
|
|
# importing *you*).
|
|
from main import options
|
|
import objects
|
|
import params
|
|
from SimObject import resolveSimObject
|