From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH, RFC] Make arm926ejs use -march=armv5t to avoid problems with EABI
Date: Sat, 5 Sep 2009 02:46:53 +0200 [thread overview]
Message-ID: <20090905004653.GF30118@game.jcrosoft.org> (raw)
In-Reply-To: <20090904112719.0afba331@marrow.netinsight.se>
On 11:27 Fri 04 Sep , Simon Kagstrom wrote:
> Make arm926ejs use -march=armv5t to avoid problems with EABI
>
> Using -march=armv5t instead of armv5te allows Marvell Kirkwood-based
> boards to boot with the EABI changes introduced in commit
> f772acf8a584067033eff1e231fcd1fb3a00d3d9
>
> Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
> ---
>
> This allows me to build with -mabi=aapcs-linux again. I still haven't
> found out what exactly causes the issues I had reported here
>
> http://www.mail-archive.com/u-boot at lists.denx.de/msg20517.html
>
> but with this patch it works fine again. Disassembling the binary, I
> see that ldrd/strd instructions are gone (as expected), although I
> don't know if that is the issue.
it's wired because ldrd and strd are for 64bit data access
and will be faster than ldm/stm
and the "e" is explecitly specity to active the dsp assembly to improve
the data transfert speed
Best Regards,
J.
next prev parent reply other threads:[~2009-09-05 0:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-04 9:27 [U-Boot] [PATCH, RFC] Make arm926ejs use -march=armv5t to avoid problems with EABI Simon Kagstrom
2009-09-05 0:46 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2009-09-14 9:02 ` Simon Kagstrom
2009-09-24 12:36 ` Stefan Roese
2009-09-24 14:20 ` Simon Kagstrom
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