From: kceiwH <kceiwh@gmail.com>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: gdb@sourceware.org
Subject: Re: How GDB knows a breakpoint is hit?
Date: Thu, 20 Aug 2009 02:21:00 -0000 [thread overview]
Message-ID: <187FEE7D-02A2-45C5-8B19-9BB7C6AC984D@gmail.com> (raw)
In-Reply-To: <m2hbw33406.fsf@igel.home>
Thanks very much.
Mao
On Aug 19, 2009, at 5:09 PM, Andreas Schwab wrote:
> kceiwH <kceiwh@gmail.com> writes:
>
>> I wonder how GDB knows it should stop the inferior when a
>> breakpoint is
>> hit. I try to read the code but only to find how GDB creates a
>> breakpoint. I thought GDB might change some instructions of
>> inferior so
>> that when the inferior executes the modified instructions, GDB
>> should
>> know. But what the function "create_breakpoint" does is to add a
>> breakpoint to the list "breakpoint_chain".
>
> Breakpoints are only inserted immediately before the inferior is
> resumed, see insert_breakpoints.
>
> Andreas.
>
> --
> Andreas Schwab, schwab@linux-m68k.org
> GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276
> 4ED5
> "And now for something completely different."
next prev parent reply other threads:[~2009-08-20 1:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-19 15:52 kceiwH
2009-08-19 19:13 ` Satendra...
2009-08-19 22:11 ` Andreas Schwab
2009-08-20 2:21 ` kceiwH [this message]
2009-08-20 6:54 ` Hui Zhu
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