Usage of vCont packet please

[Vardhana, Ananda]

Right now I send the packet Hc-1 meaning continue or make the target run and the -1 signifies do it on all process. It works fine.  What would be the equivalent for that in vCont? I do check and vCont? Support and the server does support it.

 

vCont;c-1 does not work and whatever I do with vcont it hangs. The documentation in

https://sourceware.org/gdb/onlinedocs/gdb/Packets.html#thread%2did%20syntax

 

Does not seem to help or I am misinterpreting.  If you point me to URL with usage, meaning and example if vCont that would be ideal

 

Thanks

 

 

 

 

 

[Sergio Durigan Junior]

On Thursday, May 22 2014, Ananda Vardhana wrote:

> Right now I send the packet Hc-1 meaning continue or make the target
> run and the -1 signifies do it on all process. It works fine. What
> would be the equivalent for that in vCont? I do check and vCont?
> Support and the server does support it.

Hello Ananda,

You mean to use vCont to resume all threads of the inferior, right?

> vCont;c-1 does not work and whatever I do with vcont it hangs. The documentation in
> https://sourceware.org/gdb/onlinedocs/gdb/Packets.html#thread%2did%20syntax
>
> Does not seem to help or I am misinterpreting. If you point me to URL with usage, meaning and example if vCont that would be ideal

It should be "vCont;c:-1" (note the colon between "c" and "-1"). Could
you try that?

Thanks,

--
Sergio

[Vardhana, Ananda]

Hi Sergio,

Thanks for replying. It compiles fine but the server complains with the following error:

[gdb0 info] got message: "vCont?"
[gdb0 info] Sending packet: "vCont;c;C;s;S"
[gdb0 info] got message: "vCont;c:-1"
[gdb0 error] Malformed vCont packet ";c:-1", ignoring

I guess the server is dated and I shall see if I can fix the server side. The comment for vCont in the GDB website says vCont is new and using H is being obsoleted. I did try H and the server liked it. If you have any comments on my conlcusion please let me know

Thanks
Ananda

[Sergio Durigan Junior]

On Monday, May 26 2014, Ananda Vardhana wrote:

> Hi Sergio,
>
> Thanks for replying. It compiles fine but the server complains with the following error:
>
> [gdb0 info] got message: "vCont?"
> [gdb0 info] Sending packet: "vCont;c;C;s;S"
> [gdb0 info] got message: "vCont;c:-1"
> [gdb0 error] Malformed vCont packet ";c:-1", ignoring
>
> I guess the server is dated and I shall see if I can fix the server
> side. The comment for vCont in the GDB website says vCont is new and
> using H is being obsoleted. I did try H and the server liked it. If
> you have any comments on my conlcusion please let me know

Hi Ananda,

Yeah, that may well be the reason. I don't remember if you provided the
version of GDB, so using an old one is likely to not work with recent
packets, of course :-). It might be good considering updating the
version, or maybe backport the patch that implemented vCont on
gdbserver.

Anyway, I also wanted to let you know that this mailing list is actually
not the official one of the GDB project. Unfortunately, it is not
documented anywhere so some people still send email to this list. For
future questions, please e-mail <g...@sourceware.org>.

Thanks,

--
Sergio