From: Albert ARIBAUD <albert.u.boot@aribaud.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC] [PATCH] rewrite doc/README.arm-unaligned-accesses
Date: Sat, 22 Feb 2014 16:00:19 +0100 [thread overview]
Message-ID: <20140222160019.4cc483c0@lilith> (raw)
In-Reply-To: <20140222131750.5cb50999@lilith>
On Sat, 22 Feb 2014 13:17:50 +0100, Albert ARIBAUD
<albert.u.boot@aribaud.net> wrote:
> Code which traps with -munaligned-access and SRC.A set is code which
> is not correct, since the native unaligned access which was trapped
> reflects an unaligned access within the C source code, which is not
> allowed as per C99. If that access had been performed through get_ or
> put_unaligned, then the code would be conformant and wouldn't trap.
To be more exact: ... then all accesses in the code would be conformant
and wouldn't trap (the code as a whole would quite probably still not be
conformant because of the way the unaligned access would be rewritten
into aligned accesses by the get/put_unaligned macro).
Amicalement,
--
Albert.
next prev parent reply other threads:[~2014-02-22 15:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-18 12:52 [U-Boot] [RFC] [PATCH] rewrite doc/README.arm-unaligned-accesses Albert ARIBAUD
2014-02-20 21:34 ` Tom Rini
2014-02-21 10:25 ` Albert ARIBAUD
2014-02-21 13:38 ` Tom Rini
2014-02-22 12:17 ` Albert ARIBAUD
2014-02-22 15:00 ` Albert ARIBAUD [this message]
2014-02-24 14:37 ` Tom Rini
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