diff options
| author | sergiodj <sergiodj> | 2013-10-07 05:34:10 +0000 |
|---|---|---|
| committer | sergiodj <sergiodj> | 2013-10-07 05:34:10 +0000 |
| commit | 16fd332e4240cce47a1a990d2b2b8190cd5ee5f8 (patch) | |
| tree | 0d5f8f299db3ddf4279a3d7bd637f01be65c2b6d /gdb/corelow.c | |
| parent | 5133593f601eb6ef05152cec1ecf4bf34acd206b (diff) | |
| download | gdb-16fd332e4240cce47a1a990d2b2b8190cd5ee5f8.tar.gz | |
This patch adds a new convenience variable called "$_exitsignal", which
will hold the signal number when the inferior terminates due to the
uncaught signal.
I've made modifications on infrun.c:handle_inferior_event such that
$_exitcode gets cleared when the inferior signalled, and vice-versa.
This assumption was made because the variables are mutually
exclusive, i.e., when the inferior terminates because of an uncaught
signal it is not possible for it to return. I have also made modifications
such that when a corefile is loaded, $_exitsignal gets set to the uncaught
signal that "killed" the inferior, and $_exitcode is cleared.
The patch also adds a NEWS entry, documentation bits, and a testcase. The
documentation entry explains how to use $_exitsignal and $_exitcode in a
GDB script, by making use of the new $_isvoid convenience function.
gdb/
2013-10-06 Sergio Durigan Junior <sergiodj@redhat.com>
* NEWS: Mention new convenience variable $_exitsignal.
* corelow.c (core_open): Reset exit convenience variables. Set
$_exitsignal to the uncaught signal which generated the corefile.
* infrun.c (handle_inferior_event): Reset exit convenience
variables. Set $_exitsignal for TARGET_WAITKIND_SIGNALLED.
(clear_exit_convenience_vars): New function.
* inferior.h (clear_exit_convenience_vars): New prototype.
gdb/testsuite/
2013-10-06 Sergio Durigan Junior <sergiodj@redhat.com>
* gdb.base/corefile.exp: Test whether $_exitsignal is set and
$_exitcode is void when opening a corefile.
* gdb.base/exitsignal.exp: New file.
* gdb.base/segv.c: Likewise.
* gdb.base/normal.c: Likewise.
gdb/doc/
2013-10-06 Sergio Durigan Junior <sergiodj@redhat.com>
* gdb.texinfo (Convenience Variables): Document $_exitsignal.
Update entry for $_exitcode.
Diffstat (limited to 'gdb/corelow.c')
| -rw-r--r-- | gdb/corelow.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gdb/corelow.c b/gdb/corelow.c index 7a5aaabf7c6..d1e7f6ae7df 100644 --- a/gdb/corelow.c +++ b/gdb/corelow.c @@ -429,6 +429,9 @@ core_open (char *filename, int from_tty) if (p) printf_filtered (_("Core was generated by `%s'.\n"), p); + /* Clearing any previous state of convenience variables. */ + clear_exit_convenience_vars (); + siggy = bfd_core_file_failing_signal (core_bfd); if (siggy > 0) { @@ -446,6 +449,11 @@ core_open (char *filename, int from_tty) printf_filtered (_("Program terminated with signal %s, %s.\n"), gdb_signal_to_name (sig), gdb_signal_to_string (sig)); + + /* Set the value of the internal variable $_exitsignal, + which holds the signal uncaught by the inferior. */ + set_internalvar_integer (lookup_internalvar ("_exitsignal"), + siggy); } /* Fetch all registers from core file. */ |