FreeBSD/Linux Kernel Cross Reference
sys/arm/include/atomic.h

     /* $NetBSD: atomic.h,v 1.1 2002/10/19 12:22:34 bsh Exp $ */
     
     /*-
      * Copyright (C) 2003-2004 Olivier Houchard
      * Copyright (C) 1994-1997 Mark Brinicombe
      * Copyright (C) 1994 Brini
      * All rights reserved.
      *
      * This code is derived from software written for Brini by Mark Brinicombe
     *
     * 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Brini.
     * 4. The name of Brini may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
     *
     * $FreeBSD: releng/11.1/sys/arm/include/atomic.h 315371 2017-03-16 06:00:27Z mjg $
     */
    
    #ifndef _MACHINE_ATOMIC_H_
    #define _MACHINE_ATOMIC_H_
    
    #include <machine/armreg.h>
    
    #ifndef _KERNEL
    #include <machine/sysarch.h>
    #endif
    
    #if __ARM_ARCH >= 6
    #include <machine/atomic-v6.h>
    #else /* < armv6 */
    #include <machine/atomic-v4.h>
    #endif /* Arch >= v6 */
    
    static __inline int
    atomic_load_32(volatile uint32_t *v)
    {
    
            return (*v);
    }
    
    static __inline void
    atomic_store_32(volatile uint32_t *dst, uint32_t src)
    {
            *dst = src;
    }
    
    static __inline int
    atomic_load_long(volatile u_long *v)
    {
    
            return (*v);
    }
    
    static __inline void
    atomic_store_long(volatile u_long *dst, u_long src)
    {
            *dst = src;
    }
    
    #define atomic_clear_ptr                atomic_clear_32
    #define atomic_set_ptr                  atomic_set_32
    #define atomic_fcmpset_ptr              atomic_fcmpset_32
    #define atomic_fcmpset_rel_ptr          atomic_fcmpset_rel_32
    #define atomic_fcmpset_acq_ptr          atomic_fcmpset_acq_32
    #define atomic_cmpset_ptr               atomic_cmpset_32
    #define atomic_cmpset_rel_ptr           atomic_cmpset_rel_32
    #define atomic_cmpset_acq_ptr           atomic_cmpset_acq_32
    #define atomic_store_ptr                atomic_store_32
    #define atomic_store_rel_ptr            atomic_store_rel_32
    
    #define atomic_add_int                  atomic_add_32
    #define atomic_add_acq_int              atomic_add_acq_32
    #define atomic_add_rel_int              atomic_add_rel_32
    #define atomic_subtract_int             atomic_subtract_32
    #define atomic_subtract_acq_int         atomic_subtract_acq_32
    #define atomic_subtract_rel_int         atomic_subtract_rel_32
    #define atomic_clear_int                atomic_clear_32
    #define atomic_clear_acq_int            atomic_clear_acq_32
    #define atomic_clear_rel_int            atomic_clear_rel_32
   #define atomic_set_int                  atomic_set_32
   #define atomic_set_acq_int              atomic_set_acq_32
   #define atomic_set_rel_int              atomic_set_rel_32
   #define atomic_fcmpset_int              atomic_fcmpset_32
   #define atomic_fcmpset_acq_int          atomic_fcmpset_acq_32
   #define atomic_fcmpset_rel_int          atomic_fcmpset_rel_32
   #define atomic_cmpset_int               atomic_cmpset_32
   #define atomic_cmpset_acq_int           atomic_cmpset_acq_32
   #define atomic_cmpset_rel_int           atomic_cmpset_rel_32
   #define atomic_fetchadd_int             atomic_fetchadd_32
   #define atomic_readandclear_int         atomic_readandclear_32
   #define atomic_load_acq_int             atomic_load_acq_32
   #define atomic_store_rel_int            atomic_store_rel_32
   #define atomic_swap_int                 atomic_swap_32
   
   #endif /* _MACHINE_ATOMIC_H_ */

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