Rong Xu | a7bb6f3 | 2014-11-03 13:21:25 -0800 | [diff] [blame] | 1 | # Copyright (C) 2011-2014 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 | |
| 27 | def get_elinos_environment(): |
| 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 | |
| 58 | def elinos_init(): |
| 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() |