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Date:      Tue, 30 Nov 1999 14:12:03 +0100
From:      Marcel Moolenaar <marcel@scc.nl>
To:        current@FreeBSD.org
Subject:   Re: kernel: -mpreferred-stack-boundary=2 ??
Message-ID:  <3843CD23.6221988A@scc.nl>
References:  <Pine.BSF.4.10.9911300236160.7938-100000@current1.whistle.com.newsgate.clinet.fi>, <86bt8ci3ai.fsf@not.demophon.com>

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Ville-Pertti Keinonen wrote:
> 
> > What about commercial and/or third party KLDs? They fail to work if they
> > don't also set -preferred-stack-boundry=2, right?
> 
> Oops, I accidentally replied to this privately.
> 
> Anyhow, I'll repeat it here - stack alignment does *not* break
> link-compatibility.  It does not change calling conventions, it just
> adds padding after the args to ensure that local variables can be
> predictably aligned.

So, how does aligning stackframes affect the inherently static property
of code size then?

-- 
Marcel Moolenaar                        mailto:marcel@scc.nl
SCC Internetworking & Databases           http://www.scc.nl/
The FreeBSD project                mailto:marcel@FreeBSD.org


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