abi_compat.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2001 Doug Rabson
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _COMPAT_H_
   32 #define _COMPAT_H_
   33 
   34 /*
   35  * Helper macros for translating objects between different ABIs.
   36  */
   37 
   38 #define PTRIN(v)        (void *)(uintptr_t)(v)
   39 #define PTROUT(v)       (uintptr_t)(v)
   40 
   41 #define CP(src, dst, fld) do {                  \
   42         (dst).fld = (src).fld;                  \
   43 } while (0)
   44 
   45 #define CP2(src, dst, sfld, dfld) do {          \
   46         (dst).dfld = (src).sfld;                \
   47 } while (0)
   48 
   49 #define PTRIN_CP(src, dst, fld) do {            \
   50         (dst).fld = PTRIN((src).fld);           \
   51 } while (0)
   52 
   53 #define PTROUT_CP(src, dst, fld) do {           \
   54         (dst).fld = PTROUT((src).fld);          \
   55 } while (0)
   56 
   57 #define TV_CP(src, dst, fld) do {               \
   58         CP((src).fld, (dst).fld, tv_sec);       \
   59         CP((src).fld, (dst).fld, tv_usec);      \
   60 } while (0)
   61 
   62 #define TS_CP(src, dst, fld) do {               \
   63         CP((src).fld, (dst).fld, tv_sec);       \
   64         CP((src).fld, (dst).fld, tv_nsec);      \
   65 } while (0)
   66 
   67 #define ITS_CP(src, dst) do {                   \
   68         TS_CP((src), (dst), it_interval);       \
   69         TS_CP((src), (dst), it_value);          \
   70 } while (0)
   71 
   72 #define BT_CP(src, dst, fld) do {                               \
   73         CP((src).fld, (dst).fld, sec);                          \
   74         *(uint64_t *)&(dst).fld.frac[0] = (src).fld.frac;       \
   75 } while (0)
   76 
   77 #endif /* !_COMPAT_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/sys/abi_compat.h

FreeBSD/Linux Kernel Cross Reference
sys/sys/abi_compat.h