diff options
Diffstat (limited to 'util')
| -rwxr-xr-x | util/cpt_upgrader.py | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/util/cpt_upgrader.py b/util/cpt_upgrader.py new file mode 100755 index 000000000..73965d0ab --- /dev/null +++ b/util/cpt_upgrader.py @@ -0,0 +1,167 @@ +#!/usr/bin/env python + +# Copyright (c) 2012 ARM Limited +# All rights reserved +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# +# 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: Ali Saidi +# + +import ConfigParser +import sys, os +import os.path as osp + +def from_0(cpt): + pass + +# An example of a translator +def from_1(cpt): + if cpt.get('root','isa') == 'arm': + for sec in cpt.sections(): + import re + # Search for all the execution contexts + if re.search('.*sys.*\.cpu.*\.x.\..*', sec): + # Update each one + mr = cpt.get(sec, 'miscRegs').split() + #mr.insert(21,0) + #mr.insert(26,0) + cpt.set(sec, 'miscRegs', ' '.join(str(x) for x in mr)) + +migrations = [] +migrations.append(from_0) +migrations.append(from_1) + +verbose_print = False + +def verboseprint(*args): + if not verbose_print: + return + for arg in args: + print arg, + print + +def process_file(path, **kwargs): + if not osp.isfile(path): + import errno + raise IOError(ennro.ENOENT, "No such file", path) + + verboseprint("Processing file %s...." % path) + + if kwargs.get('backup', True): + import shutil + shutil.copyfile(path, path + '.bak') + + cpt = ConfigParser.SafeConfigParser() + + # gem5 is case sensitive with paramaters + cpt.optionxform = str + + # Read the current data + cpt_file = file(path, 'r') + cpt.readfp(cpt_file) + cpt_file.close() + + # Make sure we know what we're starting from + if not cpt.has_option('root','cpt_ver'): + raise LookupError("cannot determine version of checkpoint") + + cpt_ver = cpt.getint('root','cpt_ver') + + # If the current checkpoint is longer than the migrations list, we have a problem + # and someone didn't update this file + if cpt_ver > len(migrations): + raise ValueError("upgrade script is too old and needs updating") + + verboseprint("\t...file is at version %#x" % cpt_ver) + + if cpt_ver == len(migrations): + verboseprint("\t...nothing to do") + return + + # Walk through every function from now until the end fixing the checkpoint + for v in xrange(cpt_ver,len(migrations)): + verboseprint("\t...migrating to version %#x" % (v + 1)) + migrations[v](cpt) + cpt.set('root','cpt_ver', str(v + 1)) + + # Write the old data back + verboseprint("\t...completed") + cpt.write(file(path, 'w')) + + +if __name__ == '__main__': + from optparse import OptionParser + parser = OptionParser("usage: %prog [options] <filename or directory>") + parser.add_option("-r", "--recurse", action="store_true", + help="Recurse through all subdirectories modifying "\ + "each checkpoint that is found") + parser.add_option("-N", "--no-backup", action="store_false", + dest="backup", default=True, + help="Do no backup each checkpoint before modifying it") + parser.add_option("-v", "--verbose", action="store_true", + help="Print out debugging information as") + + (options, args) = parser.parse_args() + if len(args) != 1: + parser.error("You must specify a checkpoint file to modify or a "\ + "directory of checkpoints to recursively update") + + verbose_print = options.verbose + + # Deal with shell variables and ~ + path = osp.expandvars(osp.expanduser(args[0])) + + # Process a single file if we have it + if osp.isfile(path): + process_file(path, **vars(options)) + # Process an entire directory + elif osp.isdir(path): + cpt_file = osp.join(path, 'm5.cpt') + if options.recurse: + # Visit very file and see if it matches + for root,dirs,files in os.walk(path): + for name in files: + if name == 'm5.cpt': + process_file(osp.join(root,name), **vars(options)) + for dir in dirs: + pass + # Maybe someone passed a cpt.XXXXXXX directory and not m5.cpt + elif osp.isfile(cpt_file): + process_file(cpt_file, **vars(options)) + else: + print "Error: checkpoint file not found at in %s " % path, + print "and recurse not specified" + sys.exit(1) + sys.exit(0) + |