Best way to hardware AES.

[Luke Small]

I'm thinking about getting some intel or sparc system with AES hardware.
What would be the cleanest way to access the Open Cryptographic Framework
to access the hardware. I'm writing in C. I'd like to do 256 bit aes-ctr or
preferably aes-gcm and use ultrasparc T2 and above, slightly older Xeons or
i7s. I'm looking at using openssl/evp.h, but would it be better to do some
sort of internal ssl session for what would mostly be an app with
pre-shared symmetric keys?