455         real_path = find_real_dso_path(dso_path, self.binary_cache_path)
456         if not real_path:
461         if not self._check_debug_line_section(real_path):
462             log_debug("file %s doesn't contain .debug_line section." % real_path)
465         addr_step = self._get_addr_step(real_path)
466         self._collect_line_info(dso, real_path, [0])
467         self._collect_line_info(dso, real_path, range(-addr_step, -addr_step * 4 - 1, -addr_step))
468         self._collect_line_info(dso, real_path,
471     def _check_debug_line_section(self, real_path):  argument
472         return '.debug_line' in self.readelf.get_sections(real_path)
474     def _get_addr_step(self, real_path):  argument
475         arch = self.readelf.get_arch(real_path)
482     def _collect_line_info(self, dso, real_path, addr_shifts):  argument
503             subproc = subprocess.Popen([self.addr2line_path, option, '-e', real_path],
663         real_path = find_real_dso_path(dso_path, self.binary_cache_path)
664         if not real_path:
666         arch = self.readelf.get_arch(real_path)
669         return (real_path, arch)
675         real_path, arch = dso_info
687                 real_path]