From ca49096f5d02e351b928b2fd584bd7ca0d5fcf1f Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Wed, 27 Nov 2013 22:05:06 +0100 Subject: Add CPUID function --- src/cpuid.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/cpuid.h (limited to 'src') diff --git a/src/cpuid.h b/src/cpuid.h new file mode 100644 index 0000000..0558c09 --- /dev/null +++ b/src/cpuid.h @@ -0,0 +1,48 @@ +/* + Copyright (c) 2012-2013, Matthias Schiffer + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +#ifndef _FASTD_CPUID_H_ +#define _FASTD_CPUID_H_ + +#if !(defined(__i386__) || defined(__x86_64__)) +#error Tried to include cpuid.h on a non-x86 system +#endif + +#include + + +#define CPUID_FXSR ((uint64_t)1 << 24) +#define CPUID_PCLMULQDQ ((uint64_t)1 << 33) +#define CPUID_SSSE3 ((uint64_t)1 << 41) + + +static inline uint64_t fastd_cpuid(void) { + uint32_t edx, ecx; + asm("cpuid" : "=d"(edx), "=c"(ecx) : "a"((uint32_t)1)); + return ((uint64_t)ecx) << 32 | edx; +} + +#endif /* _FASTD_CPUID_H_ */ -- cgit v1.2.3