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From: Yue Lu <hacklu.newborn@gmail.com>
To: gdb@sourceware.org
Subject: how to continue from a breakpoint in GNU/Hurd
Date: Tue, 16 Jul 2013 16:45:00 -0000	[thread overview]
Message-ID: <CAB8fV=hR=GDb5_gUjwoxA=sVivHV9TBWuAzuD5yZGnpGWFbNSA@mail.gmail.com> (raw)

Hi.

I am writing a debugger demo under GNU/Hurd when I study the gdb
source code. And I have met a big problem that when I set a breakpoint
in the inferior, my code can't resume inferior from it.

I can get the exception message from the mach kernel when the inferior
hit the breakpoint. As soon as I got the exception message, I removed
the int3, and set the EIP to the previous values, then post a signal
zero to the inferior by msg_sig_post_untraced_request(). at last I
called thread_resume() to resume it. But thing goes wrong, the
inferior is always stops at the breakpoint. and seems never to
continue.

I don't know how to fix this, could any of you give me a suggestion?
thanks very much.

--
Yue Lu (陆岳)


             reply	other threads:[~2013-07-16 16:45 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-16 16:45 Yue Lu [this message]
2013-07-16 17:29 ` Hui Zhu
     [not found] <CAB8fV=i04n-eHTxP=7hWRkB7O1VJobvrMc5KSHOX0SkJ3vuqhQ@mail.gmail.com>
2013-07-16 16:44 ` Luis Machado
2013-07-16 17:05   ` Yue Lu
2013-07-16 17:26     ` Luis Machado
     [not found]       ` <CAB8fV=jnOcYCGmQ_emcoE0ZYH6MjT3K3a1P8=svRR+nKSMD69A@mail.gmail.com>
2013-07-17 12:10         ` Richard Braun
2013-07-17 16:07           ` Yue Lu
2013-07-17 16:13             ` Richard Braun
2013-07-17 16:22               ` Yue Lu
2013-07-18  9:03                 ` Richard Braun

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