From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: PJ4: allow building in Thumb-2 mode
Date: Mon, 24 Nov 2014 16:29:42 +0100 [thread overview]
Message-ID: <2078609.NLHB18YoOo@wuerfel> (raw)
In-Reply-To: <1416830200-11114-1-git-send-email-ard.biesheuvel@linaro.org>
On Monday 24 November 2014 12:56:40 Ard Biesheuvel wrote:
> Two files that get included when building the multi_v7_defconfig target
> fail to build when selecting THUMB2_KERNEL for this configuration.
>
> In both cases, we can just build the file as ARM code, as none of its
> symbols are exported to modules, so there are no interworking concerns.
> In the iwmmxt.S case, add ENDPROC() declarations so the symbols are
> annotated as functions, resulting in the linker to emit the appropriate
> mode switches.
>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Ah, very nice. I tried this before, but my version didn't actually
work, presumably because I didn't know about the ENDPROC() stuff.
Have you tested this on a machine that has IWMMXT enabled?
Arnd
next prev parent reply other threads:[~2014-11-24 15:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-24 11:56 [PATCH] ARM: PJ4: allow building in Thumb-2 mode Ard Biesheuvel
2014-11-24 14:57 ` Nicolas Pitre
2014-11-24 15:29 ` Arnd Bergmann [this message]
2014-11-24 15:34 ` Ard Biesheuvel
2014-11-24 17:17 ` Arnd Bergmann
2014-11-24 17:36 ` Gregory CLEMENT
2014-11-24 17:48 ` Ard Biesheuvel
2014-11-24 19:01 ` Gregory CLEMENT
2014-11-24 19:49 ` Ard Biesheuvel
2014-11-25 16:14 ` Gregory CLEMENT
2014-11-26 10:21 ` Ard Biesheuvel
2014-11-24 17:56 ` Olof Johansson
2014-11-24 18:28 ` Ard Biesheuvel
2014-11-24 18:48 ` Olof Johansson
2014-11-25 12:33 ` Ard Biesheuvel
2014-11-24 18:50 ` Nicolas Pitre
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