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Groups > linux.kernel > #1349026
| From | Kieran Bingham <kieran.bingham@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCHv3 04/13] scripts/gdb: Provide exception catching parser |
| Date | 2016-03-03 12:50 +0100 |
| Message-ID | <r8zVx-6xi-47@gated-at.bofh.it> (permalink) |
| References | <r8zVv-6xi-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
Signed-off-by: Kieran Bingham <kieran.bingham@linaro.org>
---
scripts/gdb/linux/utils.py | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index 0893b326a28b..dbe2ad78048c 100644
--- a/scripts/gdb/linux/utils.py
+++ b/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
--
2.5.0
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[PATCHv3 00/13] scripts/gdb: Linux awareness debug commands Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 11/13] scripts/gdb: Add a Radix Tree Parser Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 02/13] scripts/gdb: Provide kernel list item generators Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 05/13] scripts/gdb: Support !CONFIG_MODULES gracefully Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 01/13] scripts/gdb: Provide linux constants Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 04/13] scripts/gdb: Provide exception catching parser Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 13/13] scripts/gdb: Add lx_thread_info_by_pid helper Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 10/13] scripts/gdb: Add cpu iterators Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 12/13] scripts/gdb: Add interrupts command Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 06/13] scripts/gdb: Provide a dentry_name VFS path helper Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 08/13] scripts/gdb: Add mount point list command Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100 [PATCHv3 03/13] scripts/gdb: Convert modules usage to lists functions Kieran Bingham <kieran.bingham@linaro.org> - 2016-03-03 12:50 +0100
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