linux-toradex.git/scripts/gdb/linux/utils.py, branch v5.17-rc1

scripts/gdb: add utils.read_ulong()

2020-09-08T07:33:15+00:00

Add a function for reading unsigned long values, which vary in size
depending on the architecture.

Signed-off-by: John Ogness 
Reviewed-by: Nick Desaulniers 
Tested-by: Nick Desaulniers 
Tested-by: Petr Mladek 
Signed-off-by: Petr Mladek 
Link: https://lore.kernel.org/r/20200814212525.6118-2-john.ogness@linutronix.de

scripts/gdb: fix lx-dmesg when CONFIG_PRINTK_CALLER is set

2019-10-19T10:32:31+00:00

When CONFIG_PRINTK_CALLER is set, struct printk_log contains an
additional member caller_id.  This affects the offset of the log text.
Account for this by using the type information from gdb to determine all
the offsets instead of using hardcoded values.

This fixes following error:

  (gdb) lx-dmesg
  Python Exception  embedded null character:
  Error occurred in Python command: embedded null character

The read_u* utility functions now take an offset argument to make them
easier to use.

Link: http://lkml.kernel.org/r/20191011142500.2339-1-joel.colledge@linbit.com
Signed-off-by: Joel Colledge 
Reviewed-by: Jan Kiszka 
Cc: Kieran Bingham 
Cc: Leonard Crestez 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: silence pep8 checks

2019-05-15T02:52:52+00:00

These scripts have some pep8 style warnings.  Fix them up so that this
directory is all pep8 clean.

Link: http://lkml.kernel.org/r/20190329220844.38234-6-swboyd@chromium.org
Signed-off-by: Stephen Boyd 
Cc: Douglas Anderson 
Cc: Nikolay Borisov 
Cc: Kieran Bingham 
Cc: Jan Kiszka 
Cc: Jackie Liu 
Cc: Jason Wessel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: improve types abstraction for gdb python scripts

2016-05-24T00:04:14+00:00

Change the read_u16 function so it accepts both 'str' and 'byte' as type
for the arguments.

When calling read_memory() from gdb API, depending on if it was built
with 2.7 or 3.X, the format used to return the data will differ ( 'str'
for 2.7, and 'byte' for 3.X ).

Add a function read_memoryview() to be able to get a 'memoryview' object
back from read_memory() both with python 2.7 and 3.X .

Tested with python 3.4 and 2.7
Tested with gdb 7.7

Link: http://lkml.kernel.org/r/73621f564503137a002a639d174e4fb35f73f462.1462865983.git.jan.kiszka@siemens.com
Signed-off-by: Dom Cote 
Tested-by: Kieran Bingham  (Py2.7,Py3.4,GDB10)
Signed-off-by: Kieran Bingham 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: provide a dentry_name VFS path helper

2016-05-24T00:04:14+00:00

Walk the VFS entries, pre-pending the iname strings to generate a full
VFS path name from a dentry.

Link: http://lkml.kernel.org/r/4328fdb2d15ba7f1b21ad21c2eecc38d9cfc4d13.1462865983.git.jan.kiszka@siemens.com
Signed-off-by: Kieran Bingham 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: provide exception catching parser

2016-05-24T00:04:14+00:00

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@siemens.com
Signed-off-by: Kieran Bingham 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: fix PEP8 compliance

2015-07-01T02:44:58+00:00

Signed-off-by: Thiébaud Weksteen 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: fix typo in exception name

2015-07-01T02:44:58+00:00

Signed-off-by: Thiébaud Weksteen 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: port to python3 / gdb7.7

2015-02-17T22:34:54+00:00

I tried to use these scripts in an ubuntu 14.04 host (gdb 7.7 compiled
against python 3.3) but there were several errors.

I believe this patch fixes these issues so that the commands now work (I
tested lx-symbols, lx-dmesg, lx-lsmod).

Main issues that needed to be resolved:

  * In python 2 iterators have a "next()" method. In python 3 it is
    __next__() instead (so let's just add both).

  * In older python versions there was an implicit conversion
    in object.__format__() (used when an object is in string.format())
    where it was converting the object to str first and then
    calling str's __format__(). This has now been removed so
    we must explicitly convert to str the objects for which
    we need to keep this behavior.

  * In dmesg.py: in python 3 log_buf is now a "memoryview" object
    which needs to be converted to a string in order to use string
    methods like "splitlines()". Luckily memoryview exists in
    python 2.7.6 as well, so we can convert log_buf to memoryview
    and use the same code in both python 2 and python 3.

This version of the patch has now been tested with gdb 7.7 and both python
3.4 and python 2.7.6 (I think asking for at least python 2.7.6 is a
reasonable requirement instead of complicating the code with version
checks etc).

Signed-off-by: Pantelis Koukousoulas 
Signed-off-by: Jan Kiszka 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: add get_gdbserver_type helper

2015-02-17T22:34:54+00:00

This helper probes the type of the gdb server.  Supported are QEMU and
KGDB so far.  Knowledge about the gdb server is required e.g.  to
retrieve the current CPU or current task.

Signed-off-by: Jan Kiszka 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds