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
   9 from os.path import abspath, dirname, exists
  10
  11 # Add the toplevel objdir to the gdb source search path.
  12
  13 # In development builds, $objdir/dist/bin/libxul.so is a symlink to
  14 # $objdir/toolkit/library/build/libxul.so, and the latter path is what gdb uses
  15 # to search for gdb scripts.
  16 #
  17 # For artifact builds, libxul.so will be a regular file in $objdir/dist/bin.
  18 # Look both places.
  19
  20 libxul_dir = dirname(__file__)
  21 objdir = None
  22 for relpath in ("../../..", "../.."):
  23     objdir = abspath(libxul_dir + "/" + relpath)
  24     if exists(objdir + "/build/.gdbinit"):
  25         break
  26 else:
  27     gdb.write("Warning: Gecko objdir not found\n")
  28
  29 if objdir is not None:
  30     m = re.search(r"[\w ]+: (.*)", gdb.execute("show dir", False, True))
  31     if m and objdir not in m.group(1).split(":"):
  32         gdb.execute("set dir {}:{}".format(objdir, m.group(1)))
  33
  34     # When running from a random directory, the toplevel Gecko .gdbinit may
  35     # not have been loaded. Load it now.
  36     gdb.execute("source -s build/.gdbinit.loader")