From: Pedro Alves <pedro@codesourcery.com>
To: gdb-patches@sourceware.org
Cc: Yao Qi <yao@codesourcery.com>
Subject: Re: [PATCH,ARM] Fix single step on vfork
Date: Wed, 01 Sep 2010 17:11:00 -0000 [thread overview]
Message-ID: <201009011811.10735.pedro@codesourcery.com> (raw)
In-Reply-To: <4C7E85C0.3050902@codesourcery.com>
On Wednesday 01 September 2010 17:56:32, Yao Qi wrote:
>
> + /* Don't consider single-stepping when the inferior is
> + waiting_for_vfork_done, either software or hardware step. In
> + software step, child process will hit the software single step
> + breakpoint inserted in parent process. In hardware step, GDB
> + can resumes inferior, and waiting for vfork_done event. */
This last sentence looks incomplete? At least, I can't seem to
parse it.
> + if (current_inferior()->waiting_for_vfork_done)
Space before parens.
> + {
> + if (debug_infrun)
> + fprintf_unfiltered (gdb_stdlog,
> + "infrun: resume : clear step\n");
> + step = 0;
> + }
> +
> if (debug_infrun)
> fprintf_unfiltered (gdb_stdlog,
> "infrun: resume (step=%d, signal=%d), "
> @@ -1577,11 +1590,16 @@ a command like `return' or `jump' to continue execution."));
> We can't use displaced stepping when we have a signal to deliver;
> the comments for displaced_step_prepare explain why. The
> comments in the handle_inferior event for dealing with 'random
> - signals' explain what we do instead. */
> + signals' explain what we do instead.
> +
> + We can't use displaced stepping when we are waiting for vfork_done
> + event, displaced stepping breaks the vfork child similarly as single
> + step software breakpoint. */
> if (use_displaced_stepping (gdbarch)
> && (tp->trap_expected
> || (step && gdbarch_software_single_step_p (gdbarch)))
> - && sig == TARGET_SIGNAL_0)
> + && sig == TARGET_SIGNAL_0
> + && !current_inferior()->waiting_for_vfork_done)
Space before parens.
Otherwise okay. Thanks!
--
Pedro Alves
next prev parent reply other threads:[~2010-09-01 17:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-01 16:56 Yao Qi
2010-09-01 17:11 ` Pedro Alves [this message]
2010-09-02 3:03 ` Yao Qi
2010-09-06 14:09 ` Pedro Alves
2010-09-06 14:25 ` Yao Qi
2010-09-06 14:56 ` Pedro Alves
2010-09-08 17:23 ` Yao Qi
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