def cmdline(self):
return [
get_tool_name('objdump'),
] + self.objdump_options() + [
'--section={}'.format(self._section_name),
self.path,
]
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
logger.debug("Creating ElfContainer for %s", self.source.path)
cmd = [
get_tool_name('readelf'), '--wide', '--section-headers',
self.source.path
]
output = subprocess.check_output(cmd,
shell=False,
stderr=subprocess.DEVNULL)
has_debug_symbols = False
try:
output = output.decode('utf-8').split('\n')
if output[1].startswith('File:'):
output = output[2:]
output = output[5:]
# Entries of readelf --section-headers have the following columns:
# [Nr] Name Type Address Off Size ES Flg Lk Inf Al
self._sections = collections.OrderedDict()
for line in output:
if line.startswith('Key to Flags'):
break
# Strip number column because there may be spaces in the brakets
line = line.split(']', 1)[1].split()
name, type, flags = line[0], line[1], line[6] + '_'
if name.startswith('.debug') or name.startswith('.zdebug'):
has_debug_symbols = True
if _should_skip_section(name, type):
continue
# Use first match, with last option being '_' as fallback
elf_class = [
ElfContainer.SECTION_FLAG_MAPPING[x] for x in flags
if x in ElfContainer.SECTION_FLAG_MAPPING
][0]
logger.debug("Adding section %s (%s) as %s", name, type,
elf_class)
self._sections[name] = elf_class(self, name)
except Exception as e:
command = ' '.join(cmd)
logger.debug(
"OutputParsingError in %s from `%s` output - %s:%s",
self.__class__.__name__,
command,
e.__class__.__name__,
e,
)
raise OutputParsingError(command, self)
if not has_debug_symbols:
self._install_debug_symbols()
def base_options():
if not hasattr(ReadElfSection, "_base_options"):
output = our_check_output(
[get_tool_name("readelf"), "--help"],
stderr=subprocess.DEVNULL,
).decode("us-ascii", errors="replace")
ReadElfSection._base_options = []
for x in ("--decompress", ):
if x in output:
ReadElfSection._base_options.append(x)
return ReadElfSection._base_options
def base_options():
if not hasattr(ReadElfSection, '_base_options'):
output = subprocess.check_output(
[get_tool_name('readelf'), '--help'],
shell=False,
stderr=subprocess.DEVNULL,
).decode('us-ascii', errors='replace')
ReadElfSection._base_options = []
for x in ('--decompress', ):
if x in output:
ReadElfSection._base_options.append(x)
return ReadElfSection._base_options
def get_debug_link(path):
try:
output = subprocess.check_output(
[get_tool_name('readelf'), '--string-dump=.gnu_debuglink', path],
stderr=subprocess.DEVNULL,
)
except subprocess.CalledProcessError as e:
logger.debug("Unable to get Build Id for %s: %s", path, e)
return None
m = re.search(r'^\s+\[\s+0\]\s+(\S+)$',
output.decode('utf-8', errors='replace'),
flags=re.MULTILINE)
if not m:
return None
return m.group(1)
def get_build_id(path):
try:
output = subprocess.check_output(
[get_tool_name('readelf'), '--notes', path],
stderr=subprocess.DEVNULL,
)
except subprocess.CalledProcessError as e:
logger.debug("Unable to get Build ID for %s: %s", path, e)
return None
m = re.search(r'^\s+Build ID: ([0-9a-f]+)$',
output.decode('utf-8'),
flags=re.MULTILINE)
if not m:
return None
return m.group(1)
def cmdline(self):
return ([get_tool_name('readelf'), '--wide'] + self.readelf_options() +
[self.path])
def objcopy(*args):
subprocess.check_call(
(get_tool_name('objcopy'), ) + args,
shell=False,
stderr=subprocess.DEVNULL,
)
def objcopy(*args):
our_check_output(
(get_tool_name("objcopy"), ) + args,
shell=False,
stderr=subprocess.DEVNULL,
)
def cmdline(self):
return ([get_tool_name("readelf"), "--wide"] + self.readelf_options() +
[self.path])
def cmdline(self):
return ([get_tool_name("objdump")] + self.objdump_options() +
["--section={}".format(self._section_name), self.path])
