def _ElfPathAndToolPrefixForSymbol(self, symbol, elf_path, tool_prefix):
size_info = None
size_path = None
for size_info, size_path in zip(self._size_infos, self._size_paths):
if symbol in size_info.raw_symbols:
break
else:
# If symbols is from a diff(), use its address+name to find it.
for size_info, size_path in zip(self._size_infos,
self._size_paths):
matched = size_info.raw_symbols.WhereAddressInRange(
symbol.address)
# Use last matched symbol to skip over padding-only symbols.
if len(matched
) > 0 and matched[-1].full_name == symbol.full_name:
symbol = matched[-1]
break
else:
assert False, 'Symbol does not belong to a size_info.'
orig_tool_prefix = size_info.metadata.get(models.METADATA_TOOL_PREFIX)
if orig_tool_prefix:
orig_tool_prefix = paths.FromSrcRootRelative(orig_tool_prefix)
if os.path.exists(orig_tool_prefix + 'objdump'):
tool_prefix = orig_tool_prefix
# TODO(agrieve): Would be even better to use objdump --info to check that
# the toolchain is for the correct architecture.
assert tool_prefix is not None, (
'Could not determine --tool-prefix. Possible fixes include setting '
'--tool-prefix, or setting --output-directory')
if elf_path is None:
filename = size_info.metadata.get(models.METADATA_ELF_FILENAME)
output_dir = self._lazy_paths.output_directory
size_path = self._size_paths[self._size_infos.index(size_info)]
if output_dir:
# Local build: File is located in output directory.
path = os.path.normpath(os.path.join(output_dir, filename))
if not output_dir or not os.path.exists(path):
# Downloaded build: File is located beside .size file.
path = os.path.normpath(
os.path.join(os.path.dirname(size_path),
os.path.basename(filename)))
assert os.path.exists(path), (
'Could locate ELF file. If binary was built locally, ensure '
'--output-directory is set. If output directory is unavailable, '
'ensure {} is located beside {}, or pass its path explicitly using '
'elf_path=').format(os.path.basename(filename), size_path)
found_build_id = archive.BuildIdFromElf(path, tool_prefix)
expected_build_id = size_info.metadata.get(
models.METADATA_ELF_BUILD_ID)
assert found_build_id == expected_build_id, (
'Build ID does not match for %s' % path)
return path, tool_prefix
def build_id_matches(elf_path):
found_build_id = archive.BuildIdFromElf(elf_path, tool_prefix)
expected_build_id = size_info.metadata.get(
models.METADATA_ELF_BUILD_ID)
return found_build_id == expected_build_id
