| #------------------------------------------------------------------------------- |
| # elftools tests |
| # |
| # Eli Bendersky (eliben@gmail.com) |
| # This code is in the public domain |
| #------------------------------------------------------------------------------- |
| try: |
| import unittest2 as unittest |
| except ImportError: |
| import unittest |
| |
| from utils import setup_syspath; setup_syspath() |
| from elftools.common.py3compat import BytesIO, iteritems |
| from elftools.dwarf.lineprogram import LineProgram, LineState, LineProgramEntry |
| from elftools.dwarf.structs import DWARFStructs |
| from elftools.dwarf.constants import * |
| |
| |
| class TestLineProgram(unittest.TestCase): |
| def _make_program_in_stream(self, stream): |
| """ Create a LineProgram from the given program encoded in a stream |
| """ |
| ds = DWARFStructs(little_endian=True, dwarf_format=32, address_size=4) |
| header = ds.Dwarf_lineprog_header.parse( |
| b'\x04\x10\x00\x00' + # initial lenght |
| b'\x03\x00' + # version |
| b'\x20\x00\x00\x00' + # header length |
| b'\x01\x01\x01\x0F' + # flags |
| b'\x0A' + # opcode_base |
| b'\x00\x01\x04\x08\x0C\x01\x01\x01\x00' + # standard_opcode_lengths |
| # 2 dir names followed by a NULL |
| b'\x61\x62\x00\x70\x00\x00' + |
| # a file entry |
| b'\x61\x72\x00\x0C\x0D\x0F' + |
| # and another entry |
| b'\x45\x50\x51\x00\x86\x12\x07\x08' + |
| # followed by NULL |
| b'\x00') |
| |
| lp = LineProgram(header, stream, ds, 0, len(stream.getvalue())) |
| return lp |
| |
| def assertLineState(self, state, **kwargs): |
| """ Assert that the state attributes specified in kwargs have the given |
| values (the rest are default). |
| """ |
| for k, v in iteritems(kwargs): |
| self.assertEqual(getattr(state, k), v) |
| |
| def test_spec_sample_59(self): |
| # Sample in figure 59 of DWARFv3 |
| s = BytesIO() |
| s.write( |
| b'\x02\xb9\x04' + |
| b'\x0b' + |
| b'\x38' + |
| b'\x82' + |
| b'\x73' + |
| b'\x02\x02' + |
| b'\x00\x01\x01') |
| |
| lp = self._make_program_in_stream(s) |
| linetable = lp.get_entries() |
| |
| self.assertEqual(len(linetable), 7) |
| self.assertIs(linetable[0].state, None) # doesn't modify state |
| self.assertEqual(linetable[0].command, DW_LNS_advance_pc) |
| self.assertEqual(linetable[0].args, [0x239]) |
| self.assertLineState(linetable[1].state, address=0x239, line=3) |
| self.assertEqual(linetable[1].command, 0xb) |
| self.assertEqual(linetable[1].args, [2, 0]) |
| self.assertLineState(linetable[2].state, address=0x23c, line=5) |
| self.assertLineState(linetable[3].state, address=0x244, line=6) |
| self.assertLineState(linetable[4].state, address=0x24b, line=7, end_sequence=False) |
| self.assertEqual(linetable[5].command, DW_LNS_advance_pc) |
| self.assertEqual(linetable[5].args, [2]) |
| self.assertLineState(linetable[6].state, address=0x24d, line=7, end_sequence=True) |
| |
| def test_spec_sample_60(self): |
| # Sample in figure 60 of DWARFv3 |
| s = BytesIO() |
| s.write( |
| b'\x09\x39\x02' + |
| b'\x0b' + |
| b'\x09\x03\x00' + |
| b'\x0b' + |
| b'\x09\x08\x00' + |
| b'\x0a' + |
| b'\x09\x07\x00' + |
| b'\x0a' + |
| b'\x09\x02\x00' + |
| b'\x00\x01\x01') |
| |
| lp = self._make_program_in_stream(s) |
| linetable = lp.get_entries() |
| |
| self.assertEqual(len(linetable), 10) |
| self.assertIs(linetable[0].state, None) # doesn't modify state |
| self.assertEqual(linetable[0].command, DW_LNS_fixed_advance_pc) |
| self.assertEqual(linetable[0].args, [0x239]) |
| self.assertLineState(linetable[1].state, address=0x239, line=3) |
| self.assertLineState(linetable[3].state, address=0x23c, line=5) |
| self.assertLineState(linetable[5].state, address=0x244, line=6) |
| self.assertLineState(linetable[7].state, address=0x24b, line=7, end_sequence=False) |
| self.assertLineState(linetable[9].state, address=0x24d, line=7, end_sequence=True) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |
| |
