/*
 * Copyright (c) 2016-2020 François Tigeot <ftigeot@wolfpond.org>
 * 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 unmodified, 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 AUTHOR ``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 AUTHOR 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 _ASM_CPUFEATURE_H_
#define _ASM_CPUFEATURE_H_

#include <asm/cpufeatures.h>
#include <asm/processor.h>

#include <machine/specialreg.h>
#include <machine/md_var.h>

static inline bool
static_cpu_has(uint16_t feature)
{
        switch(feature) {
        case X86_FEATURE_CLFLUSH:
                return ((cpu_feature & CPUID_CLFSH) != 0);
        case X86_FEATURE_PAT:
                return ((cpu_feature & CPUID_PAT) != 0);
        case X86_FEATURE_HYPERVISOR:
                return ((cpu_feature2 & CPUID2_VMM) != 0);
        default:
                return false;
        }
}

#define boot_cpu_has(bit)       static_cpu_has(bit)

#endif  /* _ASM_CPUFEATURE_H_ */