[PATCH 1/7] Add <sys/auxv.h> and gethwcap function.

[Ryan S. Arnold]

Alright, so I admit.. foot in mouth moment right now.
In light of my recent proposal to expand the hwcap into the high
32-bits of _dl_hwcap for 32-bit and 64-bit platforms I think this
interface should be reconsidered for inclusion.

Richard, you were right all along.

Ryan

On Mon, May 14, 2012 at 2:55 PM, Ryan S. Arnold <ryan.arnold@gmail.com> wrote:
> On Mon, May 14, 2012 at 1:59 PM, Richard Henderson <rth@twiddle.net> wrote:
>> On 05/14/12 11:49, Ryan S. Arnold wrote:
>>> Isn't this redundant with the following?
>>>
>>> __getauxval (AT_HWCAP)
>>>
>>> I imagine, even for a user application, this probably isn't going to
>>> be called more than once so is this specific export justified?
>>
>> Nearly but not quite.  Please read the 0/7 post re the different
>> return types.
>
> Ahh, I see..  I was thinking it doesn't matter because as far as I can
> see, the dl_hwcap field of the GLRO is still populated with only the
> low half of the HWCAP field on a 32-bit system (like 32-bit PowerPC):
>
> elf/dl-sysdep.c:
>
>       case AT_HWCAP:
>         GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
>
> Ryan S. Arnold