| #!/usr/bin/env python |
| # |
| # Copyright 2018 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Creates a compressed archive of binary symbols derived from the unstripped |
| executables and libraries cataloged by "ids.txt".""" |
| |
| import argparse |
| import os |
| import subprocess |
| import sys |
| import tarfile |
| import tempfile |
| |
| |
| def main(args): |
| parser = argparse.ArgumentParser() |
| parser.add_argument('ids_txt', type=str, nargs=1, |
| help='Path to ids.txt files.') |
| parser.add_argument('-o', '--output_tarball', nargs=1, type=str, |
| help='Path which the tarball will be written to.') |
| parser.add_argument('--eu-strip', required=True, type=str, |
| help='Path to the eu-strip tool.') |
| parser.add_argument('--fuchsia-build-id-dir', type=str, required=True, |
| help='Directory containing symbols for SDK prebuilts.') |
| args = parser.parse_args(args) |
| |
| stripped_tempfile = tempfile.NamedTemporaryFile() |
| ids_txt = args.ids_txt[0] |
| build_ids_archive = tarfile.open(args.output_tarball[0], 'w:bz2') |
| for line in open(ids_txt, 'r'): |
| # debug_tempfile: The path which debug symbols will be written to. |
| # stripped_tempfile: The path which the stripped executable will be written |
| # to. This file is ignored and immediately deleted. |
| with tempfile.NamedTemporaryFile() as debug_tempfile, \ |
| tempfile.NamedTemporaryFile() as stripped_tempfile: |
| build_id, binary_path = line.strip().split(' ') |
| |
| # Look for prebuilt symbols in the SDK first. |
| symbol_source_path = os.path.join(args.fuchsia_build_id_dir, |
| build_id[:2], |
| build_id[2:] + '.debug') |
| if not os.path.exists(symbol_source_path): |
| binary_abspath = os.path.abspath( |
| os.path.join(os.path.dirname(ids_txt), binary_path)) |
| |
| # Extract debugging symbols from the binary into their own file. |
| # The stripped executable binary is written to |debug_tempfile| and |
| # deleted. Writing to /dev/null would be preferable, but eu-strip |
| # disallows writing output to /dev/null. |
| subprocess.check_call([args.eu_strip, '-g', binary_abspath, |
| '-f', debug_tempfile.name, |
| '-o', stripped_tempfile.name]) |
| |
| if os.path.getsize(debug_tempfile.name) == 0: |
| # This is a prebuilt which wasn't accompanied by SDK symbols. |
| continue |
| |
| symbol_source_path = debug_tempfile.name |
| |
| |
| # Archive the debugging symbols, placing them in a hierarchy keyed to the |
| # GNU build ID. The symbols reside in directories whose names are the |
| # first two characters of the build ID, with the symbol files themselves |
| # named after the remaining characters of the build ID. So, a symbol file |
| # with the build ID "deadbeef" would be located at the path 'de/adbeef'. |
| build_ids_archive.add(symbol_source_path, |
| '%s/%s' % (build_id[:2], build_id[2:])) |
| |
| return 0 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main(sys.argv[1:])) |