ifunc.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2019 Brandon Bergren <bdragon@FreeBSD.org>
    5  * Copyright (c) 2015-2018 The FreeBSD Foundation. All rights reserved.
    6  *
    7  * Part of this software was developed by
    8  * Konstantin Belousov <kib@FreeBSD.org>
    9  * under sponsorship from the FreeBSD Foundation.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD$
   33  */
   34 
   35 #ifndef __POWERPC_IFUNC_H
   36 #define __POWERPC_IFUNC_H
   37 
   38 #include <sys/types.h>
   39 
   40 #define DEFINE_IFUNC(qual, ret_type, name, args)                        \
   41     static ret_type (*name##_resolver(void))args __used;                \
   42     qual ret_type name args __attribute__((ifunc(#name "_resolver")));  \
   43     static ret_type (*name##_resolver(void))args
   44 
   45 #define DEFINE_UIFUNC(qual, ret_type, name, args)                       \
   46     static ret_type (*name##_resolver(register_t, register_t,           \
   47         register_t, register_t, register_t, register_t, register_t,     \
   48         register_t))args __used;                                        \
   49     qual ret_type name args __attribute__((ifunc(#name "_resolver")));  \
   50     static ret_type (*name##_resolver(                                  \
   51         register_t cpu_features,                                        \
   52         register_t cpu_features2,                                       \
   53         register_t arg3 __unused,                                       \
   54         register_t arg4 __unused,                                       \
   55         register_t arg5 __unused,                                       \
   56         register_t arg6 __unused,                                       \
   57         register_t arg7 __unused,                                       \
   58         register_t arg8 __unused))args
   59 
   60 #endif

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FreeBSD/Linux Kernel Cross Reference sys/powerpc/include/ifunc.h

FreeBSD/Linux Kernel Cross Reference
sys/powerpc/include/ifunc.h