* gdbserver multithread support broken in 5.2.1?
@ 2002-07-26 17:12 Dan Kegel
2002-07-29 6:39 ` Daniel Jacobowitz
0 siblings, 1 reply; 4+ messages in thread
From: Dan Kegel @ 2002-07-26 17:12 UTC (permalink / raw)
To: gdb
With gdb+dejagnu-weekly-CVS-20020709, remote debugging works fine on ppc405.
With gdb-5.2.1 built the same way, it doesn't seem to work, and I
get the error message
GDB bug: target.c (target_signal_from_host): unrecognized real-time signal
from gdbserver.
The problem seems to be in gdbserver, as the new gdb works fine with the old
gdbserver. When I debug a trivial 9-threaded program:
the breakpoint on main works fine, but a breakpoint on the first created
thread's main routine fails. Here's the gdb log:
(gdb) target remote 10.0.1.1:1234
Remote debugging using 10.0.1.1:1234
0x30013ae8 in ?? ()
(gdb) break main
Breakpoint 1 at 0x10000a00: file atomicity_test.c, line 46.
(gdb) cont
Continuing.
Breakpoint 1, main (argc=1, argv=0x7ffffe84) at atomicity_test.c:46
46 int switches = 0;
(gdb) break my_thread_main
Breakpoint 2 at 0x10000964: file atomicity_test.c, line 33.
(gdb) cont
Continuing.
And here's the log on the remote system:
# gdbserver foo:1234 ./a.out
Process ./a.out created; pid = 452
Remote debugging from host 192.168.6.130
nthreads 8, nloops 100000, nrepeats 100
GDB bug: target.c (target_signal_from_host): unrecognized real-time signal
There wasn't much time between those two releases, so it shouldn't be
too hard to track the problem down. I haven't looked at the
diffs yet; I was kind of hoping somebody would know what was up...
(In both cases, I had applied a patch to give an initial value for
solib-absolute-prefix, but it's hard to imagine that was causing a problem...)
Thanks for any suggestions!
- Dan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: gdbserver multithread support broken in 5.2.1?
2002-07-26 17:12 gdbserver multithread support broken in 5.2.1? Dan Kegel
@ 2002-07-29 6:39 ` Daniel Jacobowitz
2002-07-29 8:44 ` Andrew Cagney
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Jacobowitz @ 2002-07-29 6:39 UTC (permalink / raw)
To: Dan Kegel; +Cc: gdb
On Fri, Jul 26, 2002 at 05:53:59PM -0700, Dan Kegel wrote:
> With gdb+dejagnu-weekly-CVS-20020709, remote debugging works fine on ppc405.
>
> With gdb-5.2.1 built the same way, it doesn't seem to work, and I
> get the error message
> GDB bug: target.c (target_signal_from_host): unrecognized real-time signal
> from gdbserver.
CVS branches strike again. 5.2.1 is a maintenance release only; it
contains some important bugfixes. CVS-20020709 is a development
snapshot, from the main trunk. It contains new features, like the
multithreaded gdbserver. If you want a released version of GDB with
this support, you have to wait for 5.3 (or 6.0, whatever we settle
on...). September was the plan, if I remember right.
--
Daniel Jacobowitz Carnegie Mellon University
MontaVista Software Debian GNU/Linux Developer
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: gdbserver multithread support broken in 5.2.1?
2002-07-29 6:39 ` Daniel Jacobowitz
@ 2002-07-29 8:44 ` Andrew Cagney
2002-07-29 10:34 ` Dan Kegel
0 siblings, 1 reply; 4+ messages in thread
From: Andrew Cagney @ 2002-07-29 8:44 UTC (permalink / raw)
To: Daniel Jacobowitz; +Cc: Dan Kegel, gdb
>
> CVS branches strike again. 5.2.1 is a maintenance release only; it
> contains some important bugfixes. CVS-20020709 is a development
> snapshot, from the main trunk. It contains new features, like the
> multithreaded gdbserver. If you want a released version of GDB with
> this support, you have to wait for 5.3 (or 6.0, whatever we settle
> on...). September was the plan, if I remember right.
I think it will be called 5.3 (if we work on 6.0 being multi-arch only).
Mutter something about HP/UX :-)
Andrew
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: gdbserver multithread support broken in 5.2.1?
2002-07-29 8:44 ` Andrew Cagney
@ 2002-07-29 10:34 ` Dan Kegel
0 siblings, 0 replies; 4+ messages in thread
From: Dan Kegel @ 2002-07-29 10:34 UTC (permalink / raw)
To: Andrew Cagney; +Cc: Daniel Jacobowitz, gdb
Andrew Cagney wrote:
>> CVS branches strike again. 5.2.1 is a maintenance release only; it
>> contains some important bugfixes. CVS-20020709 is a development
>> snapshot, from the main trunk. It contains new features, like the
>> multithreaded gdbserver. If you want a released version of GDB with
>> this support, you have to wait for 5.3 (or 6.0, whatever we settle
>> on...). September was the plan, if I remember right.
>
>
> I think it will be called 5.3 (if we work on 6.0 being multi-arch only).
> Mutter something about HP/UX :-)
Thanks for the explanation. Guess I'll stick with that old weekly snapshot
for another six weeks then.
- Dan
^ permalink raw reply [flat|nested] 4+ messages in thread
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2002-07-26 17:12 gdbserver multithread support broken in 5.2.1? Dan Kegel
2002-07-29 6:39 ` Daniel Jacobowitz
2002-07-29 8:44 ` Andrew Cagney
2002-07-29 10:34 ` Dan Kegel
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