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())
