toolkit/library/libxul.so-gdb.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 """ GDB Python customization auto-loader for libxul """
   6
   7 import re
   8 from os.path import abspath, dirname, exists
   9
  10 # Add the toplevel objdir to the gdb source search path.
  11
  12 # In development builds, $objdir/dist/bin/libxul.so is a symlink to
  13 # $objdir/toolkit/library/build/libxul.so, and the latter path is what gdb uses
  14 # to search for gdb scripts.
  15 #
  16 # For artifact builds, libxul.so will be a regular file in $objdir/dist/bin.
  17 # Look both places.
  18
  19 libxul_dir = dirname(__file__)
  20 objdir = None
  21 for relpath in ("../../..", "../.."):
  22     objdir = abspath(libxul_dir + "/" + relpath)
  23     if exists(objdir + "/build/.gdbinit"):
  24         break
  25 else:
  26     gdb.write("Warning: Gecko objdir not found\n")
  27
  28 if objdir is not None:
  29     m = re.search(r"[\w ]+: (.*)", gdb.execute("show dir", False, True))
  30     if m and objdir not in m.group(1).split(":"):
  31         gdb.execute("set dir {}:{}".format(objdir, m.group(1)))
  32
  33     # When running from a random directory, the toplevel Gecko .gdbinit may
  34     # not have been loaded. Load it now.
  35     gdb.execute("source -s build/.gdbinit.loader")