1# -*- python -*-
2# Copyright (C) 2009-2016 Free Software Foundation, Inc.
3
4# This program is free software; you can redistribute it and/or modify
5# it under the terms of the GNU General Public License as published by
6# the Free Software Foundation; either version 3 of the License, or
7# (at your option) any later version.
8#
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY; without even the implied warranty of
11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12# GNU General Public License for more details.
13#
14# You should have received a copy of the GNU General Public License
15# along with this program.  If not, see <http://www.gnu.org/licenses/>.
16
17import sys
18import gdb
19import os
20import os.path
21
22pythondir = '@pythondir@'
23libdir = '@toolexeclibdir@'
24
25# This file might be loaded when there is no current objfile.  This
26# can happen if the user loads it manually.  In this case we don't
27# update sys.path; instead we just hope the user managed to do that
28# beforehand.
29if gdb.current_objfile () is not None:
30    # Update module path.  We want to find the relative path from libdir
31    # to pythondir, and then we want to apply that relative path to the
32    # directory holding the objfile with which this file is associated.
33    # This preserves relocatability of the gcc tree.
34
35    # Do a simple normalization that removes duplicate separators.
36    pythondir = os.path.normpath (pythondir)
37    libdir = os.path.normpath (libdir)
38
39    prefix = os.path.commonprefix ([libdir, pythondir])
40    # In some bizarre configuration we might have found a match in the
41    # middle of a directory name.
42    if prefix[-1] != '/':
43        prefix = os.path.dirname (prefix) + '/'
44
45    # Strip off the prefix.
46    pythondir = pythondir[len (prefix):]
47    libdir = libdir[len (prefix):]
48
49    # Compute the ".."s needed to get from libdir to the prefix.
50    dotdots = ('..' + os.sep) * len (libdir.split (os.sep))
51
52    objfile = gdb.current_objfile ().filename
53    dir_ = os.path.join (os.path.dirname (objfile), dotdots, pythondir)
54
55    if not dir_ in sys.path:
56        sys.path.insert(0, dir_)
57
58# Call a function as a plain import would not execute body of the included file
59# on repeated reloads of this object file.
60from libstdcxx.v6 import register_libstdcxx_printers
61register_libstdcxx_printers(gdb.current_objfile())
62