[PATCH] alpha: Align stack for alpha

[Collin Funk]

Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:

> As done already for x86_64 [1] and aarch64 [2].  It fixes
> misc/tst-misalign-clone on alpha.
>
> [1] https://sourceware.org/bugzilla/show_bug.cgi?id=27902
> [2] https://sourceware.org/bugzilla/show_bug.cgi?id=27939
> ---
>  sysdeps/unix/sysv/linux/alpha/clone.S | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/sysdeps/unix/sysv/linux/alpha/clone.S b/sysdeps/unix/sysv/linux/alpha/clone.S
> index 727346f8b1..f7d464fc9e 100644
> --- a/sysdeps/unix/sysv/linux/alpha/clone.S
> +++ b/sysdeps/unix/sysv/linux/alpha/clone.S
> @@ -49,6 +49,8 @@ __clone:
>  	/* Sanity check arguments.  */
>  	ldiq	v0, EINVAL
>  	beq	a0, SYSCALL_ERROR_LABEL	/* no NULL function pointers */
> +	/* Align stack.  */
> +	bic	a1, 15, a1
>  	beq	a1, SYSCALL_ERROR_LABEL	/* no NULL stack pointers */
>  
>  	/* Save the fn ptr and arg on the new stack.  */

Looks good, thanks.

Reviewed-by: Collin Funk <collin.funk1@gmail.com>

Collin