From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: Roque Arcudia Hernandez <roqueh@google.com>,
richard.henderson@linaro.org, pbonzini@redhat.com,
alex.bennee@linaro.org, slongfield@google.com,
komlodi@google.com
Cc: qemu-devel@nongnu.org
Subject: Re: [PATCH 1/2] gdbstub: Fix wrong CPUState pointer in breakpoint functions
Date: Mon, 7 Oct 2024 17:06:20 -0300 [thread overview]
Message-ID: <2e4a7aad-02cc-40e6-a647-9e6bdba911a8@linaro.org> (raw)
In-Reply-To: <20240906225451.1039718-2-roqueh@google.com>
Hi Roque,
On 6/9/24 19:54, Roque Arcudia Hernandez wrote:
> In the context of using the remote gdb with multiple
> processes/inferiors (multiple cluster machine) a given breakpoint
> will target an specific inferior. If needed the remote protocol will
> use the packet 'H op thread-id' with op = 'g' to change focus to the
> inferior we want to insert/remove the breakpoint to, for instance
> 'Hgp3.3' and not 'Hcp3.3'.
>
> This is supported by the documentation of the H packets:
>
> > 'H op thread-id'
> > Set thread for subsequent operations ('m', 'M', 'g', 'G',
> > et.al.). Depending on the operation to be performed, op should be
> > 'c' for step and continue operations (note that this is
> > deprecated, supporting the 'vCont' command is a better option),
> > and 'g' for other operations.
>
> This can also be verified in the GDB source code file gdb/remote.c.
> Functions remote_target::insert_breakpoint and
> remote_target::remove_breakpoint will eventually call
> remote_target::set_general_thread if it needs to change the process
> focus and not remote_target::set_continue_thread.
>
> This can be seen around a comment that says:
>
> /* Make sure the remote is pointing at the right process, if
> necessary. */
>
> Google-Bug-Id: 355027002
Where can we find more information on this bug ID?
I tried various query in the Google public tracker but
couldn't find anything.
(i.e. https://issuetracker.google.com/issues?q=canonicalid:355027002)
> Signed-off-by: Roque Arcudia Hernandez <roqueh@google.com>
> ---
> gdbstub/gdbstub.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
next prev parent reply other threads:[~2024-10-07 20:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-06 22:54 [PATCH 0/2] Fix for multi-process gdbstub breakpoints Roque Arcudia Hernandez
2024-09-06 22:54 ` [PATCH 1/2] gdbstub: Fix wrong CPUState pointer in breakpoint functions Roque Arcudia Hernandez
2024-10-04 20:46 ` Alex Bennée
2024-10-17 15:34 ` Roque Arcudia Hernandez
2024-10-07 20:06 ` Philippe Mathieu-Daudé [this message]
2024-10-16 17:00 ` Roque Arcudia Hernandez
2024-09-06 22:54 ` [PATCH 2/2] gdbstub: Apply breakpoints only to the selected PID Roque Arcudia Hernandez
2024-10-07 10:15 ` Alex Bennée
2024-10-17 15:36 ` Roque Arcudia Hernandez
-- strict thread matches above, loose matches on Subject: below --
2025-05-08 22:45 [PATCH 0/2] Fix for multi-process gdbstub breakpoints Nabih Estefan
2025-05-08 22:45 ` [PATCH 1/2] gdbstub: Fix wrong CPUState pointer in breakpoint functions Nabih Estefan
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