ref: 81a1bcf245f8d4ba1d627327b9069559b72d00b1
dir: /bench/amd64cpuinfo.c/
/*
BLAKE2 reference source code package - benchmark tool
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
unsigned long long cpucycles( void )
{
unsigned long long result;
asm volatile( ".byte 15;.byte 49;shlq $32,%%rdx;orq %%rdx,%%rax"
: "=a" ( result ) :: "%rdx" );
return result;
}