android/cpufeatures/cpu-features.h

/*
 * Copyright (C) 2010 The Android Open Source Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * 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 OWNER 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 CPU_FEATURES_H
#define CPU_FEATURES_H

#include <sys/cdefs.h>
#include <stdint.h>

__BEGIN_DECLS

typedef enum {
    ANDROID_CPU_FAMILY_UNKNOWN = 0,
    ANDROID_CPU_FAMILY_ARM,
    ANDROID_CPU_FAMILY_X86,

    ANDROID_CPU_FAMILY_MAX  /* do not remove */

} AndroidCpuFamily;

/* Return family of the device's CPU */
extern AndroidCpuFamily   android_getCpuFamily(void);

enum {
    ANDROID_CPU_ARM_FEATURE_ARMv7       = (1 << 0),
    ANDROID_CPU_ARM_FEATURE_VFPv3       = (1 << 1),
    ANDROID_CPU_ARM_FEATURE_NEON        = (1 << 2),
    ANDROID_CPU_ARM_FEATURE_LDREX_STREX = (1 << 3),
};

extern uint64_t    android_getCpuFeatures(void);

/* Return the number of CPU cores detected on this device. */
extern int         android_getCpuCount(void);

__END_DECLS

#endif /* CPU_FEATURES_H */