From: Andreas Schwab <schwab@linux-m68k.org>
To: kceiwH <kceiwh@gmail.com>
Cc: gdb@sourceware.org
Subject: Re: How GDB knows a breakpoint is hit?
Date: Wed, 19 Aug 2009 22:11:00 -0000 [thread overview]
Message-ID: <m2hbw33406.fsf@igel.home> (raw)
In-Reply-To: <84D22DD1-F4AD-4985-A0EC-AF3B53774D10@gmail.com> (kceiwh@gmail.com's message of "Wed, 19 Aug 2009 11:28:17 -0400")
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:[~2009-08-19 21:09 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 [this message]
2009-08-20 2:21 ` kceiwH
2009-08-20 6:54 ` Hui Zhu
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