From: Jesper Skov <jskov@cygnus.co.uk>
To: Stan Shebs <shebs@cygnus.com>
Cc: kerry@cae-plus.com, ecos-discuss@cygnus.com
Subject: Re: [ECOS] gdb vs. eCos?
Date: Wed, 17 Feb 1999 03:21:00 -0000 [thread overview]
Message-ID: <14026.31757.484758.980750@lassi.cygnus.co.uk> (raw)
In-Reply-To: < 199902162112.NAA25765@andros.cygnus.com >
>>>>> "Stan" == Stan Shebs <shebs@cygnus.com> writes:
Stan> We haven't done anything about interrupt handler debugging. My
Stan> understanding is that eCos might need some additional tweaking
Stan> for that. (True eCos'ers jump in here please.) GDB doesn't
Stan> really care - if the OS hands it a valid state, it will try to
Stan> make sense of it, whether it's in the main code or in an
Stan> interrupt handler.
If the trap exception vector is different from the interrupt vector
you want to debug, it can be done if you are careful; i.e., set your
breakpoint after the pre-exception state has been saved.
Also, using a simulator for debugging the interrupt handlers can be a
great help since it doesn't trash so much state as the gdb stub does
(that is, debugging in a SIM is truly transparent for the program
being run -- at least I haven't had any problems).
I've stepped my way through the PowerPC interrupt handler more than
once using GDB (although I prefer the SIM way -- it's faster).
Jesper
next prev parent reply other threads:[~1999-02-17 3:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-12 12:38 Kerry S. Kimbrough
[not found] ` < 199902121646.KAA26430@cae-plus.com >
1999-02-16 15:39 ` Stan Shebs
[not found] ` < 199902162112.NAA25765@andros.cygnus.com >
1999-02-17 3:21 ` Jesper Skov [this message]
[not found] ` <199902171527.JAA25835@cae-plus.com>
1999-02-17 10:41 ` Jesper Skov
1999-02-21 17:55 Zubin Burjor Sethna
[not found] ` < 6006B52C37ABD211AB0900805FFE9D79169244@saturn.sg.adisys.com.au >
1999-02-22 3:06 ` Jesper Skov
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