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Diffstat (limited to 'share/gdb/system-gdbinit/elinos.py')
-rw-r--r-- | share/gdb/system-gdbinit/elinos.py | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/share/gdb/system-gdbinit/elinos.py b/share/gdb/system-gdbinit/elinos.py new file mode 100644 index 0000000..cd35aed --- /dev/null +++ b/share/gdb/system-gdbinit/elinos.py @@ -0,0 +1,91 @@ +# Copyright (C) 2011-2014 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +"""Configure GDB using the ELinOS environment.""" + +import os +import glob +import gdb + + +def warn(msg): + print "warning: %s" % msg + + +def get_elinos_environment(): + """Return the ELinOS environment. + + If the ELinOS environment is properly set up, return a dictionary + which contains: + * The path to the ELinOS project at key 'project'; + * The path to the ELinOS CDK at key 'cdk'; + * The ELinOS target name at key 'target' (Eg. 'i486-linux'); + * A list of Xenomai install prefixes (which could be empty, if + the ELinOS project does not include Xenomai) at key 'xenomai'. + + If one of these cannot be found, print a warning; the corresponding + value in the returned dictionary will be None. + """ + result = {} + for key in ("project", "cdk", "target"): + var = "ELINOS_" + key.upper() + if var in os.environ: + result[key] = os.environ[var] + else: + warn("%s not set" % var) + result[key] = None + + if result["project"] is not None: + result["xenomai"] = glob.glob(result["project"] + "/xenomai-[0-9.]*") + else: + result["xenomai"] = [] + + return result + + +def elinos_init(): + """Initialize debugger environment for ELinOS. + + Let the debugger know where to find the ELinOS libraries on host. This + assumes that an ELinOS environment is properly set up. If some environment + variables are missing, warn about which library may be missing. + """ + elinos_env = get_elinos_environment() + + solib_dirs = [] + + # System libraries + if None in (elinos_env[key] for key in ("cdk", "target")): + warn("ELinOS system libraries will not be loaded") + else: + solib_prefix = "%s/%s" % (elinos_env["cdk"], elinos_env["target"]) + solib_dirs += ["%s/%s" % (solib_prefix, "lib")] + gdb.execute("set solib-absolute-prefix %s" % solib_prefix) + + # Xenomai libraries. Those are optional, so have a lighter warning + # if they cannot be located. + if elinos_env["project"] is None: + warn("Xenomai libraries may not be loaded") + else: + for dir in elinos_env['xenomai']: + solib_dirs += ["%s/%s" + % (dir, "xenomai-build/usr/realtime/lib")] + + if len(solib_dirs) != 0: + gdb.execute("set solib-search-path %s" % ":".join(solib_dirs)) + + +if __name__ == "__main__": + elinos_init() |