From: "Michel Dänzer" <michel@daenzer.net>
To: Alex Deucher <alexdeucher@gmail.com>
Cc: Maling list - DRI developers <dri-devel@lists.freedesktop.org>
Subject: Re: bitfield structures
Date: Fri, 17 Oct 2014 17:55:35 +0900 [thread overview]
Message-ID: <5440D987.90001@daenzer.net> (raw)
In-Reply-To: <CADnq5_MNf4L2eqe0xA7dwLMj=4zfL3UsO_H9cvJMQfz93FUOeA@mail.gmail.com>
On 16.10.2014 23:14, Alex Deucher wrote:
> As part of the amdgpu transition, we are moving to using database
> generated register and packet headers. We have a number of options
> for formatting, some of which involve bitfields (don't worry there
> will also be shift/mask style headers as well which is mainly what we
> use in the code). I think these formats are cleaner for a number of
> cases, however, as far as I know, C does not define the ordering of
> bits within bitfields.
That's only the tip of the iceberg of issues with bit-fields.
No bit-fields, please.
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
next prev parent reply other threads:[~2014-10-17 8:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 14:14 bitfield structures Alex Deucher
2014-10-16 15:33 ` Jerome Glisse
2014-10-16 15:57 ` Peter Hurley
2014-10-16 15:57 ` Eric Anholt
2014-10-16 19:16 ` Christian König
2014-10-16 21:14 ` Dave Airlie
2014-10-17 8:55 ` Michel Dänzer [this message]
2014-10-17 11:19 ` Rob Clark
2014-10-17 15:00 ` Alex Deucher
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