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Re: [RFC] Improve amd64 prologue analysis
- From: Joel Brobecker <brobecker at adacore dot com>
- To: kettenis at gnu dot org
- Cc: Pierre Muller <pierre dot muller at ics-cnrs dot unistra dot fr>, gdb-patches at sourceware dot org
- Date: Tue, 14 Dec 2010 11:05:35 +0400
- Subject: Re: [RFC] Improve amd64 prologue analysis
- References: <001701cb84ea$6883c170$398b4450$@muller@ics-cnrs.unistra.fr> <20101118172209.GE2634@adacore.com> <004201cb87c1$dab95cd0$902c1670$@muller@ics-cnrs.unistra.fr> <20101119172011.GI2634@adacore.com> <000901cb883c$067a8860$136f9920$@muller@ics-cnrs.unistra.fr>
Hi Mark,
> I think that your code does indeed catch some
> instructions that are not covered by my patch,
> especially in Windows DLL.
If Pierre were to submit a patch that merges both our changes,
do you think it would have a chance of being included?
The alternative is to start working on a pdata/xdata unwinder,
but I don't see myself having the time to look into that anytime
soon (not within the next 12 months).
You mentioned that, if we have prologue instruction parsers, they should
be Windows-specific. But I would think that this extra level of
precaution is unnecessary, since the prologue analyzer should almost
never be used on the other platforms where we have the DWARF frame info.
Is that wishful thinking?
--
Joel