def testOutsideFile(self): """Test a symbol which extends outside the entry area is detected""" entry = FakeEntry(10) section = FakeSection() elf_fname = self.ElfTestFile('u_boot_binman_syms') with self.assertRaises(ValueError) as e: elf.LookupAndWriteSymbols(elf_fname, entry, section) self.assertIn( 'entry_path has offset 4 (size 8) but the contents size ' 'is a', str(e.exception))
def testMissingImageStart(self): """Test that we detect a missing __image_copy_start symbol This is needed to mark the start of the image. Without it we cannot locate the offset of a binman symbol within the image. """ entry = FakeEntry(10) section = FakeSection() elf_fname = self.ElfTestFile('u_boot_binman_syms_bad') elf.LookupAndWriteSymbols(elf_fname, entry, section)
def testDebug(self): """Check that enabling debug in the elf module produced debug output""" try: tout.Init(tout.DEBUG) entry = FakeEntry(20) section = FakeSection() elf_fname = self.ElfTestFile('u_boot_binman_syms') with test_util.capture_sys_output() as (stdout, stderr): syms = elf.LookupAndWriteSymbols(elf_fname, entry, section) self.assertTrue(len(stdout.getvalue()) > 0) finally: tout.Init(tout.WARNING)
def testNoValue(self): """Test the case where we have no value for the symbol This should produce -1 values for all thress symbols, taking up the first 16 bytes of the image. """ entry = FakeEntry(24) section = FakeSection(sym_value=None) elf_fname = self.ElfTestFile('u_boot_binman_syms') syms = elf.LookupAndWriteSymbols(elf_fname, entry, section) self.assertEqual( tools.GetBytes(255, 20) + tools.GetBytes(ord('a'), 4), entry.data)
def testBadSymbolSize(self): """Test that an attempt to use an 8-bit symbol are detected Only 32 and 64 bits are supported, since we need to store an offset into the image. """ entry = FakeEntry(10) section = FakeSection() elf_fname = self.ElfTestFile('u_boot_binman_syms_size') with self.assertRaises(ValueError) as e: syms = elf.LookupAndWriteSymbols(elf_fname, entry, section) self.assertIn('has size 1: only 4 and 8 are supported', str(e.exception))
def testNoValue(self): """Test the case where we have no value for the symbol This should produce -1 values for all thress symbols, taking up the first 16 bytes of the image. """ entry = FakeEntry(28) section = FakeSection(sym_value=None) elf_fname = self.ElfTestFile('u_boot_binman_syms') elf.LookupAndWriteSymbols(elf_fname, entry, section) expected = (struct.pack('<L', elf.BINMAN_SYM_MAGIC_VALUE) + tools.get_bytes(255, 20) + tools.get_bytes(ord('a'), 4)) self.assertEqual(expected, entry.data)
def WriteSymbols(self, section): elf.LookupAndWriteSymbols(self.elf_fname, self, section.GetImage())