def get_source_file_path_references(location):
"""
Yield unique references to source file paths extracted from DWARF debug symbols
from the Elf file at `location`.
If there are errors when processing Elfs, these are returned as well as paths
prefixed with 'ERROR: '.
"""
if not os.path.exists(location):
return
T = contenttype.get_type(location)
if not T.is_elf:
return
unique_files = set()
unique_paths = set()
errors = []
try:
with_libdwarf = dwarf.Dwarf(location)
for path in with_libdwarf.included_source_files:
if '/' not in path:
# bare file name
unique_files.add(path)
else:
unique_paths.add(path)
for path in with_libdwarf.original_source_files:
if '/' not in path:
# bare file name
unique_files.add(path)
else:
unique_paths.add(path)
except Exception as lde:
msg = str(lde)
_, m1, m2 = msg.partition('dwarfdump')
errors.append(''.join([m1, m2]))
try:
with_binutils_nm = dwarf2.get_dwarfs(location)
for entry in with_binutils_nm:
path = entry.path
if '/' not in path:
# bare file name
unique_files.add(path)
else:
unique_paths.add(path)
except Exception as lde:
msg = str(lde)
errors.append(str)
seen_file_names = set(file_name(p) for p in unique_paths)
for fn in unique_files:
if fn not in seen_file_names and fn not in ignores:
unique_paths.add(fn)
for error in errors:
yield 'ERROR: ' + error
for path in sorted(unique_paths):
yield path
def test_dwarf2_error_shash_x86_64(self):
test_file = 'dwarf/shash.x86_64'
test_loc = self.get_test_loc(test_file)
emsg1 = 'File format is ambiguous'
try:
list(dwarf2.get_dwarfs(test_loc))
except Exception, e:
assert emsg1 in str(e)
def test_dwarf2_error_amd64_exec(self):
test_file = 'dwarf/amd64_exec'
test_loc = self.get_test_loc(test_file)
emsg1 = 'File format is ambiguous'
try:
list(dwarf2.get_dwarfs(test_loc))
except Exception, e:
assert emsg1 in str(e)
def test_dwarf2_error_misc_elfs_cpp_test_o(self):
test_file = 'misc_elfs/cpp-test.o'
test_loc = self.get_test_loc(test_file)
emsg1 = 'File format is ambiguous'
try:
list(dwarf2.get_dwarfs(test_loc))
except Exception, e:
assert emsg1 in str(e)
def check_dwarf(self, test_file, expected_file, regen=False):
test_loc = self.get_test_loc(test_file)
result = [list(r) for r in dwarf2.get_dwarfs(test_loc)]
expected_loc = FIXED_testcase.get_test_loc(expected_file,
self.test_data_dir)
if regen:
with open(expected_loc, 'wb') as exc:
json.dump(result, exc, indent=2, encoding='utf-8')
with open(expected_loc, 'rb') as exc:
expected = json.load(exc,
encoding='utf-8',
object_pairs_hook=OrderedDict)
assert sorted(expected) == sorted(result)
def test_dwarf2_empty_on_non_existing_file(self):
test_file = 'dwarf/32.fsize.chgg_DOES_NOT_EXIST'
result = dwarf2.get_dwarfs(test_file)
self.assertRaises(IOError, list, result)