[PATCH] ARM: PJ4: allow building in Thumb-2 mode

Arnd Bergmann arnd at arndb.de
Mon Nov 24 09:17:02 PST 2014

On Monday 24 November 2014 16:34:47 Ard Biesheuvel wrote:
> On 24 November 2014 at 16:29, Arnd Bergmann <arnd at arndb.de> wrote:
> > 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 at 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?
> >
> No, I don't have access to such a machine, unfortunately.

Adding a few mvebu folks to Cc, maybe one of them can test your patch.
It's also possible that Olof or Kevin have a PJ4 machine with iwmmxt 
in their boot farms.


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