Re: [PATCH 0/3] tools/nolibc: add support for SuperH

[Thomas Weißschuh]

Hi Rob,

On 2025-06-24 21:41:14-0500, Rob Landley wrote:
> On 6/9/25 04:28, Thomas Weißschuh wrote:
> > Add support for SuperH/"sh" to nolibc.
> > Only sh4 is tested for now.
> > 
> > This is only tested on QEMU so far.
> > Additional testing would be very welcome.
> 
> I ran this by Jeff Dionne (the j-core architect) who said:
> 
> > Looks correct to me.  There are no endian assumptions that I can see.
> 
> So you can put
> 
> Acked-by: Rob Landley <rob@xxxxxxxxxxx>
> Acked-by: D. Jeff Dionne <jeff@xxxxxxxxxxx>

Thanks!

> But neither of us really have a build environment set up to do much with it.
> Is there a howto for this, or is just to run the kernel tests?

v2 of the series [0] has some test instructions.
These should also work with v1, except that "-f Makefile.nolibc" needs
to be removed.

$ cd tools/testings/selftests/nolibc/
$ make -f Makefile.nolibc ARCH=sh CROSS_COMPILE=sh4-linux- nolibc-test
$ file nolibc-test
nolibc-test: ELF 32-bit LSB executable, Renesas SH, version 1 (SYSV), statically linked, not stripped
$ ./nolibc-test
Running test 'startup'
0 argc = 1                                                        [OK]
...
Total number of errors: 0
Exiting with status 0

[0] https://lore.kernel.org/lkml/20250623-nolibc-sh-v2-0-0f5b4b303025@xxxxxxxxxxxxxx/