From: Matthew Jones <matthewjones@vw1600e.org.uk>
To: gcc-help@gcc.gnu.org
Subject: RE: Unaligned access to packed structs on ppc405
Date: Mon, 30 Jan 2006 16:18:00 -0000 [thread overview]
Message-ID: <20060130161852.1qy3zcccg040ss84@webmail.vw1600e.org.uk> (raw)
> From: Yaro Pollak
>
> Greetings,
> I am cross-compiling on GCC 3.4.1 for the PowerPC 405,
> which can handle unaligned accesses in hardware.
> Whenever I am accessing members of a packed bit-struct by
> pointer, the compiler produces byte accesses, instead of
> 4-byte acceses. I've tried to use |-mstrict-align but to
> no avail. Am I doing something wrong?
Are you sure it is the compiler? Are you looking at the generated
assembler, or inferring this from a logic analyser? If its the
second case, it could be the uP rather than gcc.
--
Matthew JONES
http://www.tandbergtv.com/
next reply other threads:[~2006-01-30 16:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-30 16:18 Matthew Jones [this message]
2006-01-30 16:26 ` Yaro Pollak
-- strict thread matches above, loose matches on Subject: below --
2006-02-05 18:35 John Yates
2006-02-05 21:02 ` David Edelsohn
2006-02-06 10:18 ` Yaro Pollak
2006-02-01 12:03 [Re: Unaligned access to packed structs on ppc405] Yaro Pollak
2006-02-04 4:25 ` Unaligned access to packed structs on ppc405 David Edelsohn
2006-01-29 17:16 David Edelsohn
2006-01-30 12:03 ` Yaro Pollak
2006-02-02 16:13 ` David Edelsohn
2006-01-29 10:00 Yaro Pollak
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