From: Kieran Bingham <kieran.bingham@xxxxxxxxxx> Subject: scripts/gdb: provide exception catching parser If we attempt to read a value that is not available to GDB, an exception is raised. Most of the time, this is a good thing; however on occasion we will want to be able to determine if a symbol is available. By catching the exception to simply return None, we can determine if we tried to read an invalid value, without the exception taking our execution context away from us Link: http://lkml.kernel.org/r/c72b25c06fc66e1d68371154097e2cbb112555d8.1462865983.git.jan.kiszka@xxxxxxxxxxx Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxx> Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/gdb/linux/utils.py | 7 +++++++ 1 file changed, 7 insertions(+) diff -puN scripts/gdb/linux/utils.py~scripts-gdb-provide-exception-catching-parser scripts/gdb/linux/utils.py --- a/scripts/gdb/linux/utils.py~scripts-gdb-provide-exception-catching-parser +++ a/scripts/gdb/linux/utils.py @@ -154,3 +154,10 @@ def get_gdbserver_type(): if gdbserver_type is not None and hasattr(gdb, 'events'): gdb.events.exited.connect(exit_handler) return gdbserver_type + + +def gdb_eval_or_none(expresssion): + try: + return gdb.parse_and_eval(expresssion) + except: + return None _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
