[PATCH 1/5] powerpc64: Add the clone3 wrapper

[Paul E Murphy]

On 2/3/23 11:12 AM, Adhemerval Zanella via Libc-alpha wrote:
> It follows the internal signature:
> 
>    extern int clone3 (struct clone_args *__cl_args, size_t __size,
>   int (*__func) (void *__arg), void *__arg);
> 
> The powerpc64 ABI requires an initial stackframe so the child can
> store/restore the TOC.  It is create prior calling clone3 by
> adjusting the stack size (since kernel will compute the stack as
> stack plus size).
> 
> Checked on powerpc64-linux-gnu (power8, kernel 6.0) and
> powerpc64le-linux-gnu (power9, kernel 4.18).

Thanks. LGTM.

Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>