GDB (xrefs)
elinos.py
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1 # Copyright (C) 2011-2015 Free Software Foundation, Inc.
2 
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
7 #
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
12 #
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
15 
16 """Configure GDB using the ELinOS environment."""
17 
18 import os
19 import glob
20 import gdb
21 
22 
23 def warn(msg):
24  print "warning: %s" % msg
25 
26 
28  """Return the ELinOS environment.
29 
30  If the ELinOS environment is properly set up, return a dictionary
31  which contains:
32  * The path to the ELinOS project at key 'project';
33  * The path to the ELinOS CDK at key 'cdk';
34  * The ELinOS target name at key 'target' (Eg. 'i486-linux');
35  * A list of Xenomai install prefixes (which could be empty, if
36  the ELinOS project does not include Xenomai) at key 'xenomai'.
37 
38  If one of these cannot be found, print a warning; the corresponding
39  value in the returned dictionary will be None.
40  """
41  result = {}
42  for key in ("project", "cdk", "target"):
43  var = "ELINOS_" + key.upper()
44  if var in os.environ:
45  result[key] = os.environ[var]
46  else:
47  warn("%s not set" % var)
48  result[key] = None
49 
50  if result["project"] is not None:
51  result["xenomai"] = glob.glob(result["project"] + "/xenomai-[0-9.]*")
52  else:
53  result["xenomai"] = []
54 
55  return result
56 
57 
59  """Initialize debugger environment for ELinOS.
60 
61  Let the debugger know where to find the ELinOS libraries on host. This
62  assumes that an ELinOS environment is properly set up. If some environment
63  variables are missing, warn about which library may be missing.
64  """
65  elinos_env = get_elinos_environment()
66 
67  solib_dirs = []
68 
69  # System libraries
70  if None in (elinos_env[key] for key in ("cdk", "target")):
71  warn("ELinOS system libraries will not be loaded")
72  else:
73  solib_prefix = "%s/%s" % (elinos_env["cdk"], elinos_env["target"])
74  solib_dirs += ["%s/%s" % (solib_prefix, "lib")]
75  gdb.execute("set solib-absolute-prefix %s" % solib_prefix)
76 
77  # Xenomai libraries. Those are optional, so have a lighter warning
78  # if they cannot be located.
79  if elinos_env["project"] is None:
80  warn("Xenomai libraries may not be loaded")
81  else:
82  for dir in elinos_env['xenomai']:
83  solib_dirs += ["%s/%s"
84  % (dir, "xenomai-build/usr/realtime/lib")]
85 
86  if len(solib_dirs) != 0:
87  gdb.execute("set solib-search-path %s" % ":".join(solib_dirs))
88 
89 
90 if __name__ == "__main__":
91  elinos_init()
def elinos_init()
Definition: elinos.py:58
def warn(msg)
Definition: elinos.py:23
def get_elinos_environment()
Definition: elinos.py:27
const ULONGEST const LONGEST len
Definition: target.h:309