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Date:      Tue, 26 Jan 1999 10:04:20 +0000 (GMT)
From:      Doug Rabson <dfr@nlsystems.com>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>, freebsd-alpha@FreeBSD.ORG
Subject:   Re: ktrace fix
Message-ID:  <Pine.BSF.4.01.9901261002320.88955-100000@herring.nlsystems.com>
In-Reply-To: <13997.13901.726029.243005@grasshopper.cs.duke.edu>

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On Mon, 25 Jan 1999, Andrew Gallatin wrote:

> 
> Hidetoshi Shimokawa writes:
>  > Current ktrace doesn't trace syscalls on alpha.
>  > Here is a fix for that. The only problem is that
>  > I have to bloat struct ktr_syscall to avoid alignment problem.
>  > Is this acceptable for i386?
> 
> Well, I can't speak for i386 people but I'm enthusiastic about having
> a working ktrace on the alpha.  Without redoing things so that the
> compiler has enough information to be able to align the stuff which
> follows that ktr_syscall struct, I don't see a clean way around the
> 4-byte bloat..

Possibly ifdef it?  I think that all future 64bit arches would be affected
by this problem.  Personally I don't mind the extra space usage on i386.

--
Doug Rabson				Mail:  dfr@nlsystems.com
Nonlinear Systems Ltd.			Phone: +44 181 442 9037



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