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/*
* FAAC - Freeware Advanced Audio Coder
* Copyright (C) 2026 Nils Schimmelmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cpu_compute.h"
#if defined(SSE2_ARCH)
# ifdef _MSC_VER
# include <intrin.h>
# elif defined(__GNUC__) || defined(__clang__)
# include <cpuid.h>
# endif
#endif
CPUCaps get_cpu_caps(void)
{
CPUCaps caps = CPU_CAP_NONE;
#if defined(SSE2_ARCH)
unsigned int eax = 0, ebx = 0, ecx = 0, edx = 0;
unsigned int max_leaf = 0;
# ifdef _MSC_VER
int cpu_info[4] = {0};
__cpuid(cpu_info, 0);
max_leaf = (unsigned int)cpu_info[0];
# elif defined(__GNUC__) || defined(__clang__)
__cpuid(0, max_leaf, ebx, ecx, edx);
# endif
if (max_leaf >= 1) {
# ifdef _MSC_VER
__cpuid(cpu_info, 1);
eax = (unsigned int)cpu_info[0];
ebx = (unsigned int)cpu_info[1];
ecx = (unsigned int)cpu_info[2];
edx = (unsigned int)cpu_info[3];
# elif defined(__GNUC__) || defined(__clang__)
__get_cpuid(1, &eax, &ebx, &ecx, &edx);
# endif
if (edx & (1 << 26)) // SSE2
caps |= CPU_CAP_SSE2;
}
#endif
return caps;
}
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