[musl] busybox problem on powerpc PPC/32bit (hardware TP-Link-WDR-4900-v1)

[Bastian Bittorf]

On Sat, Feb 11, 2023 at 09:01:03AM -0500, Rich Felker wrote:
> It looks like the powerpc spe longjmp code is clobbering the value
> argument. Try the attached patch.

> diff --git a/src/setjmp/powerpc/longjmp.S b/src/setjmp/powerpc/longjmp.S
> index 611389fe..465e4cd7 100644
> --- a/src/setjmp/powerpc/longjmp.S
> +++ b/src/setjmp/powerpc/longjmp.S
> @@ -42,10 +42,10 @@ longjmp:
>  	bl 1f
>  	.hidden __hwcap
>  	.long __hwcap-.
> -1:	mflr 4
> -	lwz 5, 0(4)
> -	lwzx 4, 4, 5
> -	andis. 4, 4, 0x80
> +1:	mflr 6
> +	lwz 5, 0(6)
> +	lwzx 6, 6, 5
> +	andis. 6, 6, 0x80
>  	beq 1f
>  	.long 0x11c35b01 /* evldd 14,88(3) */
>  	.long 0x11e36301 /* ... */

Thanks a lot, this looked promising!, but
sorry, it does NOT solve the issue:

Using musl-cross-make and this file in
patches/musl-1.2.0/ppc-spe-longjmp-fix.diff
i compiled an output/bin/powerpc-linux-muslsf*
crosscompiler with:
make TARGET=powerpc-linux-muslsf install
and used it for further steps...

maybe the patch did not applied?  
let me sleep about it...

Thanks a lot, Bastian