/usr/lib/python2.7/dist-packages/vamos/vampyr/BuildFrameworks.py is in undertaker 1.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2011 Christian Dietrich <christian.dietrich@informatik.uni-erlangen.de>
# Copyright (C) 2011-2012 Reinhard Tartler <tartler@informatik.uni-erlangen.de>
# Copyright (C) 2012 Christoph Egger <siccegge@informatik.uni-erlangen.de>
# Copyright (C) 2012 Valentin Rothberg <valentinrothberg@googlemail.com>
# Copyright (C) 2012 Manuel Zerpies <manuel.f.zerpies@ww.stud.uni-erlangen.de>
# Copyright (C) 2012-2014 Stefan Hengelein <stefan.hengelein@fau.de>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import vamos
import vamos.vampyr.Configuration as Configuration
import vamos.vampyr.utils as utils
import vamos.golem.kbuild as kbuild
import vamos.tools as tools
import vamos.model as Model
import os.path
import logging
class EmptyLinumMapException(RuntimeError):
""" Indicates an Empty Linum Map in Buildframeworks """
pass
class BuildFramework:
""" Base class for all Build System Frameworks"""
def __init__(self, options=None):
"""
options: Dictonary that control the used helper tools. The
following keys are supported:
args: Dictionary with extra arguments for various tools (see note below)
exclude_others: boolean, if set, #include statements will be ignored.
loglevel: sets the loglevel, see the logging package.
Note: in the args dictionary, the 'undertaker' key can be used
to pass extra arguments to undertaker when calculating the
configurations. For instance, pass "-C simple" to select the
non-greedy algorithm for caluculating configurations.
For the tools 'sparse', 'gcc' and 'clang', this field allows you
to enable additional warnings (e.g., -Wextra).
"""
if options:
assert(isinstance(options, dict))
if options.has_key('args'):
assert(isinstance(options['args'], dict))
self.options = options
else:
self.options = dict()
if not self.options.has_key('coverage_strategy'):
self.options['coverage_strategy'] = 'min'
def make_configuration(self, basename, nth):
raise NotImplementedError
def make_partial_configuration(self, filename):
raise NotImplementedError
def apply_configuration(self):
"""
Ensures that a newly set configuration is active.
"""
pass
def cleanup_autoconf_h(self):
"""
deletes various autoconf.h files
returns a list of deleted files
"""
return list()
def find_autoconf(self):
return kbuild.find_autoconf()
def calculate_configurations(self, filename):
"""Calculate configurations for the given file
returns a list of 'Configuration' objects that match the
buildsystem class.
"""
if self.options.has_key('keep_configurations') and self.options['keep_configurations']:
return self.verify_configurations(filename)
cmd = "undertaker -q -j coverage -C %s -O combined" % self.options['coverage_strategy']
if self.options.has_key('model') and self.options['model']:
cmd += " -m %s" % self.options['model']
else:
logging.info("No model specified, running without models")
if self.options.has_key('whitelist'):
cmd += " -W %s" % self.options['whitelist']
if self.options.has_key('blacklist'):
cmd += " -B %s" % self.options['blacklist']
logging.info("Calculating configurations for '%s'", filename)
if self.options and self.options.has_key('args'):
if 'undertaker' in self.options['args']:
cmd += " " + self.options['args']['undertaker']
cmd += " '%s'" % filename.replace("'", "\\'")
(output, statuscode) = tools.execute(cmd, failok=True)
if statuscode != 0 or any([l.startswith("E:") for l in output]):
logging.error("Running undertaker failed: %s", cmd)
print "--"
for i in output:
logging.error(i)
return self.verify_configurations(filename)
def verify_configurations(self, filename):
raise NotImplementedError
def get_stdconfig(self, filename, verify=True):
# pylint: disable=W0613
return None
def file_in_current_configuration(self, filename):
raise NotImplementedError
def analyze_configuration_coverage(self, filename):
#pylint: disable=R0912
"""
Analyzes the given file 'filename' for its configuration coverage.
If all_cpp_blocks is set to True, all CPP blocks will be considered,
only configuration conditional blocks otherwise.
This method also includes statistics about blocks covered by 'allyesconfig'
returns a dict with the following members:
- lines_total: the total number of LOC in the file
- lines_covered: the number of covered LOC in all configurations
- lines_conditional_total: the number of LOC in #ifdef blocks
- lines_conditional_covered: the number of LOC in selected #ifdef blocks
- linum_map: the map as returned by 'get_block_to_linum_map(filename, True)'
- blocks_total: contains a set of all blocks in the file
- configuration_blocks: a set of configuration depentend conditional blocks
(i.e., blocks that contain an item starting with 'CONFIG_')
- blocks: a dict that maps a configuration to the set of
conditional blocks that it selects
(NB: this contains *all* blocks)
- blocks_covered: contains the set of all covered blocks over all configurations
- blocks_uncovered: contains the set of blocks that are not in any configuration
- all_configs: a set all of all found configurations, including unexpandable ones
- expandable_configs: the set of configuration that expanded successfully
..note: the dict 'blocks' contains the configuration name as
key. The name has the form 'configN', with N being a
running number. The length if this dict is equal to the
number of found confiurations of this file.
"""
return_dict = {
'lines': {},
'blocks': {},
'blocks_total':
set(utils.get_conditional_blocks(filename, all_cpp_blocks=True)),
'configuration_blocks':
set(utils.get_conditional_blocks(filename, all_cpp_blocks=False)),
}
covered_blocks = set()
if self.options.has_key('configfile'):
config_h = self.options['configfile']
logging.info("Analyzing Configuration %s", config_h)
covered_blocks = return_dict['blocks'][config_h] = \
set(utils.get_conditional_blocks(filename, config_h, all_cpp_blocks=True))
else:
if self.options.has_key('configurations'):
if not isinstance(self.options["configurations"], set):
raise RuntimeError("Internal Error, " + \
"self.options['configuration'] is not a set")
configs = list()
return_dict['all_configs'] = list()
for config_path in self.options["configurations"]:
config_obj = self.make_partial_configuration(config_path)
cfgfile = config_obj.kconfig
return_dict['all_configs'].append(cfgfile)
config_obj.switch_to()
if kbuild.file_in_current_configuration(filename, config_obj.arch,
config_obj.subarch) != "n":
logging.info("Configuration '%s' is actually compiled", cfgfile)
configs.append(config_obj)
else:
logging.info("Configuration '%s' is *not* compiled", cfgfile)
else:
configs = self.calculate_configurations(filename)
logging.info("%s: found %d configurations", filename, len(configs))
return_dict['all_configs'] = utils.find_configurations(filename)
return_dict['all_config_count'] = len(return_dict['all_configs'])
return_dict['expandable_configs'] = len(configs)
for config in configs:
try:
config.switch_to()
autoconf_h=config.get_config_h()
old_len = len(covered_blocks)
return_dict['blocks'][config.kconfig] = \
set(utils.get_conditional_blocks(filename, autoconf_h,
all_cpp_blocks=True))
covered_blocks |= return_dict['blocks'][config.kconfig]
print "Config %s added %d additional blocks" % \
(config.kconfig, len(covered_blocks) - old_len)
except RuntimeError as e:
logging.error("Failed to process config '%s': %s", filename, e)
return_dict['blocks_covered'] = covered_blocks
return_dict['blocks_uncovered'] = return_dict['blocks_total'] - covered_blocks
linum_map = utils.get_block_to_linum_map(filename, all_cpp_blocks=True)
if len(linum_map) == 0:
raise EmptyLinumMapException("linum_map contains no elements")
return_dict['linum_map'] = linum_map
total_lines = sum(linum_map.values())
covered_lines = 0
for block in covered_blocks:
covered_lines += linum_map[block]
return_dict['lines_total'] = total_lines
return_dict['lines_covered'] = covered_lines
return_dict['lines_conditional total'] = total_lines - linum_map["B00"]
if "B00" in covered_blocks:
return_dict['lines_conditional covered'] = covered_lines - linum_map["B00"]
else:
return_dict['lines_conditional covered'] = 0
return return_dict
class BareBuildFramework(BuildFramework):
""" For use without Makefiles, works directly on source files """
def __init__(self, options=None):
BuildFramework.__init__(self, options)
def identifier(self):
return "bare"
def make_configuration(self, basename, nth):
return Configuration.BareConfiguration(self, basename, nth)
def make_partial_configuration(self, filename):
raise RuntimeError("BareBuildFramework does not create partial configurations")
def file_in_current_configuration(self, filename):
# pointless for BareBuildFramework
return "y"
def verify_configurations(self, filename):
configs = list()
for cfgfile in utils.find_configurations(filename):
# here, we rely on the fact that find_configurations returns filenames such as
# 'kernel/sched.c.config42' (i.e., filenames end on the number)
assert '.config' in cfgfile
basename, ext = os.path.splitext(cfgfile)
nth = int(ext[len('.config'):])
configs.append(self.make_configuration(basename, nth))
return configs
class KbuildBuildFramework(BuildFramework):
""" For use with Kbuild-like projects, considers Kconfig constraints """
def __init__(self, options=None):
if options:
self.options=options
else:
self.options=dict()
BuildFramework.__init__(self, self.options)
self.always_on_items = set()
self.always_off_items = set()
if self.options.has_key("model") and self.options['model']:
m = Model.parse_model(self.options['model'])
self.always_on_items = m.always_on_items
self.always_off_items = m.always_off_items
def identifier(self):
return "kbuild"
def make_configuration(self, filename, nth):
raise NotImplementedError
def make_partial_configuration(self, filename):
raise NotImplementedError
def make_std_configuration(self, basename):
raise NotImplementedError
def call_makefile(self, target, extra_env="", extra_variables="", failok=False):
raise NotImplementedError
def file_in_current_configuration(self, filename):
return kbuild.file_in_current_configuration(filename, arch=self.options['arch'])
def apply_configuration(self):
"""
Ensures that a newly set configuration is active.
"""
raise NotImplementedError
def cleanup_autoconf_h(self):
"""
deletes various autoconf.h files
returns a list of deleted files
"""
(files, _) = tools.execute("find include -name autoconf.h -print -delete",
failok=False)
return files
def verify_configurations(self, filename):
logging.info("Testing which configurations are actually being compiled for '%s'",
filename)
configs = list()
for cfgfile in utils.find_configurations(filename):
# here, we rely on the fact that find_configurations returns filenames such as
# 'kernel/sched.c.config42' (i.e., filenames end on the number)
assert '.config' in cfgfile
basename, ext = os.path.splitext(cfgfile)
nth = int(ext[len('.config'):])
try:
config_obj = self.make_configuration(basename, nth)
config_obj.switch_to()
if self.file_in_current_configuration(filename) != 'n':
logging.info("Configuration '%s' is actually compiled", cfgfile)
configs.append(config_obj)
else:
logging.info("Configuration '%s' is *not* compiled", cfgfile)
except RuntimeError as e:
logging.error("Failed to process file %s", filename)
logging.error(e)
return configs
def get_stdconfig(self, filename, verify=True):
""" returns a StdConfiguration object for the given filename.
If verify is set to true, only return an object if the stdconfig actually builds it.
returns None otherwise."""
if not self.options.has_key('stdconfig'):
logging.info("No reference configuration given")
return None
# cache for speedup, filled by Configuration.expand()
if verify and self.options.has_key('stdconfig_files') and \
not filename in self.options['stdconfig_files']:
logging.info("stdconfig '%s' does not build %s (cached)",
self.options['stdconfig'], filename)
return None
c = self.make_std_configuration(filename)
if not verify:
return c
c.switch_to()
if self.file_in_current_configuration(filename) != "n":
return c
else:
logging.info("stdconfig '%s' does not build '%s'",
self.options['stdconfig'], filename)
return None
def analyze_configuration_coverage(self, filename):
"""
Analyzes the given file 'filename' for its configuration coverage.
This method also includes statistics about blocks covered by 'allyesconfig'
Returns a dict with all members that the base class returns,
plus the following in addition:
- arch: the analyzed architecture
- subarch: the analyzed subarchitecture
- blocks_allyesconfig': All blocks that are selected by allyesconfig
"""
return_dict = BuildFramework.analyze_configuration_coverage(self, filename)
return_dict['arch'] = self.options.get('arch', None)
return_dict['subarch'] = self.options.get('subarch', None)
# generate the configuration for 'allyesconfig'
allyesconfig = self.make_std_configuration(filename)
allyesconfig.switch_to()
autoconf_h=self.find_autoconf()
if self.file_in_current_configuration(filename) != 'n':
return_dict['blocks_allyesconfig'] = set(["B00"]) | \
set(utils.get_conditional_blocks(filename, autoconf_h, all_cpp_blocks=True))
else:
return_dict['blocks_allyesconfig'] = set()
print "Config %s reaches %d blocks" % \
(allyesconfig, len(return_dict['blocks_allyesconfig']))
return return_dict
def apply_black_white_lists(self, ignoreset):
"""
This function creates the "allno.config" and "allyes.config" files in
the root directory of the current tree, which ensure, when calling the
respective "make all{no, yes}config", the always_off_items to be always
off and the always_on_items to be always on, even when calling "make
all{no,yes}config" without using the framework.
Be careful though, when having an item without prompt in Kconfig, the
previously described behaviour CANNOT be guaranteed!
"""
# Sanity check
if len(self.always_on_items & self.always_off_items) > 0:
raise RuntimeError("Intersection between always_on_items and \
always_off_items is non-empty: %s" %(self.always_on_items & \
self.always_off_items))
del_cmds = list()
for item in self.always_on_items | self.always_off_items:
if any([i in item for i in ignoreset]): continue
del_cmds.append("/^%s=/d" % item)
if len(del_cmds) > 0:
sed_commands = ";".join(del_cmds)
tools.execute("sed '%s' .config > allno.config" % sed_commands)
self.call_makefile("allnoconfig")
del_cmds = list()
for item in self.always_on_items:
if any([i in item for i in ignoreset]): continue
del_cmds.append("/^%s=/d" % item)
if len(del_cmds) > 0:
sed_commands = ";".join(del_cmds)
tools.execute("sed '%s' .config > allyes.config" % sed_commands)
self.call_makefile("allyesconfig")
else:
self.call_makefile("silentoldconfig")
class LinuxBuildFramework(KbuildBuildFramework):
""" For use with Linux, considers Kconfig constraints """
def __init__(self, options=None):
if options:
self.options=options
else:
self.options=dict()
if not options.has_key('expansion_strategy'):
self.options['expansion_strategy'] = 'alldefconfig'
if not options.has_key('arch'):
self.options['arch'] = vamos.default_architecture
if not options.has_key('subarch'):
self.options['subarch'] = kbuild.guess_subarch_from_arch(self.options['arch'])
self.options['model'] = Model.get_model_for_arch(self.options['arch'])
KbuildBuildFramework.__init__(self, self.options)
logging.info("Instantiating LinuxBuildFramework (%s/%s)",
self.options['arch'], self.options['subarch'])
def make_configuration(self, basename, nth):
return Configuration.LinuxConfiguration(self, basename, nth)
def make_partial_configuration(self, filename):
return Configuration.LinuxPartialConfiguration(self, filename)
def apply_configuration(self):
"""
Ensures that a newly set configuration is active.
"""
try:
kbuild.apply_configuration(arch=self.options['arch'],
subarch=self.options['subarch'])
except RuntimeError as e:
logging.error("Expanding configuration failed: %s", e.message)
def make_std_configuration(self, basename):
return Configuration.LinuxStdConfiguration(self, basename)
def call_makefile(self, target, extra_env="", extra_variables="", failok=False):
return kbuild.call_linux_makefile(target, extra_env=extra_env, failok=failok,
extra_variables=extra_variables,
arch=self.options['arch'],
subarch=self.options['subarch'])
class BusyboxBuildFramework(KbuildBuildFramework):
""" For use with Busybox, considers Kconfig constraints """
def __init__(self, options=None):
if options:
self.options=options
else:
self.options=dict()
if not options.has_key('expansion_strategy'):
self.options['expansion_strategy'] = 'allyesconfig'
if self.options['expansion_strategy'] == 'alldefconfig':
# This is set by default but doesn't work in busybox,
# therfore let's handle this gracefully
logging.info("expansion_strategy alldefconfig doesn't exist in busybox, " +\
"overriding to allyesconfig")
self.options['expansion_strategy'] = 'allyesconfig'
self.options['arch'] = 'busybox'
self.options['subarch'] = 'busybox'
self.options['model'] = Model.get_model_for_arch('busybox')
KbuildBuildFramework.__init__(self, self.options)
def make_configuration(self, basename, nth):
return Configuration.BusyboxConfiguration(self, basename, nth)
def make_partial_configuration(self, filename):
return Configuration.BusyboxPartialConfiguration(self, filename)
def make_std_configuration(self, basename):
return Configuration.BusyboxStdConfiguration(self, basename)
def apply_configuration(self):
"""
Ensures that a newly set configuration is active.
First configure without any set or unset special item. Then, use
kconfig copy all remaining items to a temporary configuration
'allno.config'. This file is magically used by kconfig to read
in a configuration selection but set all not mentioned items in
there to 'no'. After that, repeat the game again with
'allyes.config' for all items that should be set to yes.
"""
# these item prefixes indicate harmless items that shall be
# skipped to improve performance
ignoreset = ("CONFIG_CHOICE_", "CONFIG_HAVE_DOT_CONFIG")
self.apply_black_white_lists(ignoreset)
def call_makefile(self, target, extra_env="", extra_variables="", failok=False):
return kbuild.call_makefile_generic(target, extra_env=extra_env,
extra_variables=extra_variables, failok=failok)
class CorebootBuildFramework(KbuildBuildFramework):
""" For use with Coreboot, considers Kconfig constraints """
def __init__(self, options=None):
if options:
self.options=options
else:
self.options=dict()
self.options['arch'] = 'coreboot'
self.options['model'] = Model.get_model_for_arch('coreboot')
if not self.options['model']:
raise RuntimeError('No model existing! Please run \
undertaker-kconfigdump first')
if os.environ.has_key('SUBARCH'):
self.options['subarch'] = os.environ['SUBARCH']
else:
self.options['subarch'] = "emulation/qemu-x86"
if not options.has_key('expansion_strategy') or \
self.options['expansion_strategy'] == 'alldefconfig' or \
self.options['expansion_strategy'] == 'defconfig':
self.options['expansion_strategy'] = 'allyesconfig'
KbuildBuildFramework.__init__(self, options)
def make_configuration(self, basename, nth):
return Configuration.CorebootConfiguration(self, basename, nth)
def make_partial_configuration(self, filename):
return Configuration.CorebootPartialConfiguration(self, filename)
def make_std_configuration(self, basename):
return Configuration.CorebootStdConfiguration(self, basename)
def apply_configuration(self):
"""
Ensures that a newly set configuration is active.
"""
logging.debug("Applying config for %s" ,self.options["subarch"])
kbuild.coreboot_get_config_for(self.options['subarch'])
ignoreset = ("CONFIG_CHOICE_",)
self.apply_black_white_lists(ignoreset)
def cleanup_autoconf_h(self):
"""
deletes various autoconf.h files
returns a list of deleted files
"""
(files, _) = tools.execute("find build -name config.h -print -delete",
failok=False)
return files
def find_autoconf(self):
if os.path.exists("build/config.h"):
return "build/config.h"
else:
return ""
def call_makefile(self, target, extra_env="", extra_variables="", failok=False):
return kbuild.call_makefile_generic(target, extra_env=extra_env,
extra_variables=extra_variables, failok=failok)
def select_framework(identifier, options):
frameworks = {'kbuild' : LinuxBuildFramework,
'linux' : LinuxBuildFramework,
'bare' : BareBuildFramework,
'busybox': BusyboxBuildFramework,
'coreboot': CorebootBuildFramework}
if identifier is None:
identifier='bare'
try:
logging.info("Detected Linux version %s, selecting kbuild framework",
kbuild.get_linux_version())
identifier='linux'
except kbuild.NotALinuxTree:
pass
try:
logging.info("Detected Busybox version %s; selecting busybox framework",
kbuild.get_busybox_version())
identifier='busybox'
except kbuild.NotABusyboxTree:
pass
try:
logging.info("Detected Coreboot version %s; selecting Coreboot framework",
kbuild.get_coreboot_version())
identifier='coreboot'
except kbuild.NotACorebootTree:
pass
if not options.has_key('arch') and os.environ.has_key('ARCH'):
options['arch'] = os.environ['ARCH']
if os.environ.has_key('SUBARCH'):
options['subarch'] = os.environ['SUBARCH']
else:
options['subarch'] = kbuild.guess_subarch_from_arch(options['arch'])
if options.has_key('arch') and (identifier == 'linux' or identifier == 'kbuild'):
if options['arch'] == "x86_64":
options['arch'] = 'x86'
options['subarch'] = 'x86_64'
logging.info("overriding arch to %s", options['arch'])
if options['arch'] == 'i386':
options['arch'] = 'x86'
options['subarch'] = 'i386'
logging.info("overriding arch to %s", options['arch'])
if identifier in frameworks:
bf = frameworks[identifier](options)
else:
raise RuntimeError("Build framework '%s' not found" % options['framework'])
return bf
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