From: Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP>
Subject: Re: Forcing GNAT to use 32-bit load/store instructions on ARM?
Date: Wed, 2 Jul 2014 16:49:11 +0000 (UTC)
Date: 2014-07-02T16:49:11+00:00 [thread overview]
Message-ID: <lp1d67$c5f$1@dont-email.me> (raw)
In-Reply-To: c1gribF9j9oU1@mid.individual.net
On 2014-07-01, Niklas Holsti <niklas.holsti@tidorum.invalid> wrote:
> On 14-07-02 00:20 , Simon Clubley wrote:
>>
>> When c.l.a talked a few weeks ago about syntax for the atomic update
>> of multiple bitfields at the same time, I had thought the general
>> view was that Atomic on a record resulted in register updates in units
>> of the record size when updating a single bitfield, but that's clearly
>> not the case as you have just pointed out.
>
> As I remember, the new syntax ideas in that discussion were meant to
> update some bitfields in an atomic record as part of a read, modify,
> write sequence, accessing the whole record without using a temporary
> variable to hold the value. So Ada's rule for Atomic was included and
> assumed in that discussion.
Yes, you are correct. Thinking about it, this interpretation of Ada's
Atomic rule is still consistent with that discussion because the
underlying reference is to the _full_ record in those proposals.
> I am ashamed for forgetting it... maybe
> there have been too many midnight-football-viewing sessions lately :-)
>
:-)
Simon.
--
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
Microsoft: Bringing you 1980s technology to a 21st century world
next prev parent reply other threads:[~2014-07-02 16:49 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-30 22:11 Forcing GNAT to use 32-bit load/store instructions on ARM? daniel.dmk
2014-06-30 23:41 ` Jeffrey Carter
2014-07-01 12:06 ` Simon Clubley
2014-07-01 15:44 ` Niklas Holsti
2014-07-01 17:26 ` Simon Clubley
2014-07-01 17:18 ` Simon Wright
2014-07-01 19:43 ` Simon Wright
2014-07-01 17:28 ` Jeffrey Carter
2014-07-01 0:55 ` anon
2014-07-01 4:30 ` Niklas Holsti
2014-07-01 8:11 ` Dmitry A. Kazakov
2014-07-01 12:09 ` Simon Clubley
2014-07-01 12:20 ` Dmitry A. Kazakov
2014-07-01 17:00 ` Simon Clubley
2014-07-01 19:36 ` Dmitry A. Kazakov
2014-07-01 20:08 ` Simon Clubley
2014-07-02 22:24 ` Randy Brukardt
2014-07-06 20:40 ` MatthiasR
2014-07-07 0:25 ` Simon Clubley
2014-07-07 22:38 ` Randy Brukardt
2014-07-08 6:51 ` Simon Wright
2014-07-10 11:47 ` Simon Wright
2014-07-10 13:06 ` Simon Clubley
2014-07-11 18:05 ` Simon Wright
2014-07-11 20:22 ` Simon Clubley
2014-07-08 8:50 ` Brian Drummond
2014-07-08 12:12 ` Simon Clubley
2014-07-08 13:26 ` G.B.
2014-07-08 17:13 ` Simon Clubley
2014-07-08 15:36 ` Adam Beneschan
2014-07-08 15:40 ` Adam Beneschan
2014-07-08 20:34 ` Randy Brukardt
2014-07-09 7:31 ` Dmitry A. Kazakov
2014-07-10 0:11 ` Simon Clubley
2014-07-20 11:35 ` MatthiasR
2014-07-20 15:49 ` Simon Clubley
2014-07-26 11:05 ` MatthiasR
2014-08-10 11:20 ` MatthiasR
2014-07-01 12:03 ` Simon Clubley
2014-07-01 19:52 ` daniel.dmk
2014-07-01 20:40 ` Simon Clubley
2014-07-01 20:55 ` Simon Clubley
2014-07-01 21:01 ` Niklas Holsti
2014-07-01 21:20 ` Simon Clubley
2014-07-01 22:38 ` Niklas Holsti
2014-07-02 16:49 ` Simon Clubley [this message]
2014-07-01 21:55 ` daniel.dmk
2014-07-02 7:30 ` Simon Wright
2014-07-02 18:52 ` daniel.dmk
2014-07-04 23:51 ` Niklas Holsti
2014-07-05 0:18 ` Niklas Holsti
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