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# The test_gnudebugaltlink* and test_debugsup* files have been generated as
# follows:
# $ cat test_sup.c
# int main(int argc, char** argv)
# {
# return argc;
# }
#
# $ gcc test_sup.c -o test_debugsup1
# $ gcc test_sup.c -o test_debugsup2
# $ dwz test_debugsup1 test_debugsup2 -m test_debugsup.common --dwarf-5
#
# $ gcc test_sup.c -o test_gnudebugaltlink1
# $ gcc test_sup.c -o test_gnudebugaltlink2
# $ dwz test_gnudebugaltlink1 test_gnudebugaltlink2 -m test_gnudebugaltlink.common
import unittest
import os
from elftools.elf.elffile import ELFFile
class TestDWARFSupplementaryObjects(unittest.TestCase):
def test_gnudebugaltlink_no_followlinks(self):
path = os.path.join('test', 'testfiles_for_unittests',
'test_gnudebugaltlink1.debug')
with open(path, 'rb') as f:
elffile = ELFFile(f)
# Check that we don't have a supplementary_dwarfinfo
dwarfinfo = elffile.get_dwarf_info(follow_links=False)
self.assertIsNone(dwarfinfo.supplementary_dwarfinfo)
# Check that imported units are present
self.assertTrue(any(die.tag == 'DW_TAG_imported_unit'
for cu in dwarfinfo.iter_CUs()
for die in cu.iter_DIEs()))
# Check that DW_FORM_GNU_strp_alt keep their raw_value.
for cu in dwarfinfo.iter_CUs():
for die in cu.iter_DIEs():
attrs = die.attributes
if ('DW_AT_name' in attrs and
attrs['DW_AT_name'].form == 'DW_FORM_GNU_strp_alt'):
self.assertEqual(attrs['DW_AT_name'].value,
attrs['DW_AT_name'].raw_value)
def test_gnudebugaltlink_followlinks(self):
base_dir = os.path.join(b'test', b'testfiles_for_unittests')
path = os.path.join(base_dir, b'test_gnudebugaltlink1.debug')
with ELFFile.load_from_path(path) as elffile:
# Check that we do have a supplementary_dwarfinfo
dwarfinfo = elffile.get_dwarf_info()
self.assertIsNotNone(dwarfinfo.supplementary_dwarfinfo)
# Check that imported units are replaced by what they refer to.
self.assertTrue(all(die.tag != 'DW_TAG_imported_unit'
for cu in dwarfinfo.iter_CUs()
for die in cu.iter_DIEs()))
# Check that DW_FORM_GNU_strp_alt get a proper reference
for cu in dwarfinfo.iter_CUs():
for die in cu.iter_DIEs():
attrs = die.attributes
if ('DW_AT_name' in attrs and attrs['DW_AT_name'].form ==
'DW_FORM_GNU_strp_alt'):
self.assertIsInstance(attrs['DW_AT_name'].value, bytes)
def test_debugsup_no_followlinks(self):
path = os.path.join('test', 'testfiles_for_unittests',
'test_debugsup1.debug')
with ELFFile.load_from_path(path) as elffile:
# Check that we don't have a supplementary_dwarfinfo
dwarfinfo = elffile.get_dwarf_info(follow_links=False)
self.assertIsNone(dwarfinfo.supplementary_dwarfinfo)
# Check that imported units are present
self.assertTrue(any(die.tag == 'DW_TAG_imported_unit'
for cu in dwarfinfo.iter_CUs()
for die in cu.iter_DIEs()))
# Check that DW_FORM_GNU_strp_alt keep their raw_value.
for cu in dwarfinfo.iter_CUs():
for die in cu.iter_DIEs():
attrs = die.attributes
if ('DW_AT_name' in attrs and
attrs['DW_AT_name'].form == 'DW_FORM_strp_sup'):
self.assertEqual(attrs['DW_AT_name'].value,
attrs['DW_AT_name'].raw_value)
def test_debugsup_followlinks(self):
base_dir = os.path.join(b'test', b'testfiles_for_unittests')
path = os.path.join(base_dir, b'test_debugsup1.debug')
with ELFFile.load_from_path(path) as elffile:
# Check that we do have a supplementary_dwarfinfo
dwarfinfo = elffile.get_dwarf_info()
self.assertIsNotNone(dwarfinfo.supplementary_dwarfinfo)
# Check that imported units are replaced by what they refer to.
self.assertTrue(all(die.tag != 'DW_TAG_imported_unit'
for cu in dwarfinfo.iter_CUs()
for die in cu.iter_DIEs()))
# Check that DW_FORM_GNU_strp_alt get a proper reference
for cu in dwarfinfo.iter_CUs():
for die in cu.iter_DIEs():
attrs = die.attributes
if ('DW_AT_name' in attrs and attrs['DW_AT_name'].form ==
'DW_FORM_strp_sup'):
self.assertIsInstance(attrs['DW_AT_name'].value, bytes)
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