I picked up Josh's work to support running strace over the gdb remote
serial protocol. Josh's last message is quoted below.
The gdb rsp support interfaces to gdbserver using the gdb rsp to run,
attach, get registers, get memory, get syscall info
- https://github.com:stanfordcox/strace.git
- re
This is an example that shows the back and forth interaction that is possible
between an strace aware gdbclient and the gdb remote protocol aware strace.
STRACE client
Process 10442 attached in non-stop mode
GDB client
(gdb) continue
Thread 2 "tstthreads1.x" hit Breakpoint 3, thread_worker_2 ()
I just made one small change. I didn't want to start using the
vContc;c:ppid.tid form until I saw the completed syscall where the tid
changed. For recent linux this is typically set_robust_list. So once
the syscall return is seen it starts using the pid.tid form. This was
already there in a
> It's still not clear to me what it means to "follow" syscalls for :2.
> Is that copying the syscall watchlist to the child?
es the default?
It was an attempt to mimic this behavior by filtering the tids and
syscalls in gdb_catch_this_syscall_p.
/usr/bin/strace -f tstthreads.x
...
mprotect(0x7
On 11/09/2016 11:47 AM, Stan Cox wrote:
>
>> Can you explain your -f changes?
>>
>> I see you're alternating QCatchSyscalls:1 or QCatchSyscalls:2 -- what
>> are these values? Has this protocol change gone into gdb upstream, or
>> just your own gdb branch?
> Yes, it was just a local change. QCatc
> Can you explain your -f changes?
>
> I see you're alternating QCatchSyscalls:1 or QCatchSyscalls:2 -- what
> are these values? Has this protocol change gone into gdb upstream, or
> just your own gdb branch?
Yes, it was just a local change. QCatchSyscalls:1 was without -f being
specified and Q
On 11/02/2016 11:54 AM, Stan Cox wrote:
>
>> Additionally, support for qualifying expressions (-e expr) and following
>> children (-f) will be pushed soon.
> -f and -e support has been added to the gdbserver remote protocol backend in
> the strace branch at https://github.com:stanfordcox/strace
> Additionally, support for qualifying expressions (-e expr) and following
> children (-f) will be pushed soon.
-f and -e support has been added to the gdbserver remote protocol backend in
the strace branch at https://github.com:stanfordcox/strace
Here is an interleaved example with two threads.
This is a followup to
https://sourceforge.net/p/strace/mailman/message/34782296/
which describes Josh Stone's work on strace support for the gdb remote
protocol.
https://github.com/cuviper/strace/
Initially this effort supported gdbserver "all stop" mechanism, which
stops all threads. Suppo
On 04/17/2016 10:25 PM, Dmitry V. Levin wrote:
>> Dmitry pointed out -P and -y path-based options before, which I haven't
>> found a solution for. Technically /proc/pid/fd access will work just
>> fine if the gdbserver is local anyway, but that's cheating, and can't be
>> assumed in general. It m
Hi,
On Fri, Apr 15, 2016 at 05:30:12PM -0700, Josh Stone wrote:
> Hi folks,
>
> Just wanted to give an update on this project, running strace over the
> gdbserver protocol. I've quoted my original message below, in case you
> missed it the first time, and source is here:
> https://github.com/c
Hi folks,
Just wanted to give an update on this project, running strace over the
gdbserver protocol. I've quoted my original message below, in case you
missed it the first time, and source is here:
https://github.com/cuviper/strace/
The code has been rebased onto a much newer development branc
Hi,
On Wed, Jan 20, 2016 at 12:10:25PM -0800, Josh Stone wrote:
> Hi,
>
> I've been experimenting with using strace via gdbserver, through the gdb
> remote protocol. It's now in good enough state that I'd like to get
> some feedback.
>
> First, syscall support in gdbserver is very new. There w
Hi,
I've been experimenting with using strace via gdbserver, through the gdb
remote protocol. It's now in good enough state that I'd like to get
some feedback.
First, syscall support in gdbserver is very new. There was a patch
posted a few years ago by Philippe Waroquiers, but I only just finis
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