From: Charles Forsyth <charles.forsyth@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] ureg alignment
Date: Fri, 9 May 2014 15:56:17 +0100 [thread overview]
Message-ID: <CAOw7k5iCbM_UUBv0t8OrgZJdf_P7V2gZc1oj_Hka6EJ7mkTNzA@mail.gmail.com> (raw)
In-Reply-To: <51d4d8ec419f841a99baf30ede300c25@brasstown.quanstro.net>
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On 9 May 2014 15:21, erik quanstrom <quanstro@quanstro.net> wrote:
> on 64-bit machines, the unions in the ureg.h can lead to
> internal padding.
>
although one tactic not yet implemented, but soon ..., is to make struct
and union alignment
match the least alignment required, as is done for arrays, the approach on
amd64 and arm64
is simply not to bother with the unions. if it's sp, it's sp. link is link.
i think the need for the alias
has gone. there aren't any references in port, which i think might have
caused the aliasing
in the first place, and xyz/trap.c should know what's what.
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next prev parent reply other threads:[~2014-05-09 14:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-09 14:21 erik quanstrom
2014-05-09 14:28 ` Steven Stallion
2014-05-09 14:31 ` erik quanstrom
2014-05-09 14:56 ` Charles Forsyth [this message]
2014-05-09 15:29 ` erik quanstrom
2014-05-09 15:45 ` Charles Forsyth
2014-05-09 15:52 ` erik quanstrom
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