[openssl-dev] [openssl.org #4568] Enhancement request: Capability vector accessor function for arm and ppc

[Andy Polyakov via RT]

> Thanks for the explanations.
> 
> In the code I am working with, I see:
> $ sed -n '657p' openssl-1.0.2h/crypto/cryptlib.c
> unsigned long *OPENSSL_ia32cap_loc(void)
> 
> You may want to verify it.

Right! Sorry about confusion, my bad! It was long in 1.0.x and in became
int in master. Anyway, point that it can't be changed in last-digit
release remains, as well as reason for zeroing of most significant
word[s] upon reference to OPENSSL_ia32cap_loc in 1.0.x. Yes, it's a bug
in 1.0.2 OPENSSL_ia32cap.pod.

> I happen to be using features introduced for testing and debugging,
> without knowing it. For debatable reasons, but it is my assignment to
> avoid aes-ni instructions. Maybe I will have to adapt openssl
> slightly, for instance making the capability vectors global (instead
> of hidden); or not to use the EVP interfaces.

I suppose reply in RT#4570 applies even here.

And just to clarify, "meant to be used for overly specific testing and
debugging [hence doesn't have to be pretty]" naturally applies to all
platforms with run-time switches.


-- 
Ticket here: http://rt.openssl.org/Ticket/Display.html?id=4568
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