ifunc.h

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    1 /*-
    2  * Copyright (c) 2015-2018 The FreeBSD Foundation
    3  * All rights reserved.
    4  *
    5  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
    6  * under sponsorship from the FreeBSD Foundation.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/12.0/sys/x86/include/ifunc.h 339025 2018-09-30 16:57:30Z kib $
   30  */
   31 
   32 #ifndef __X86_IFUNC_H
   33 #define __X86_IFUNC_H
   34 
   35 #define DEFINE_IFUNC(qual, ret_type, name, args, resolver_qual)         \
   36     resolver_qual ret_type (*name##_resolver(void))args __used;         \
   37     qual ret_type name args __attribute__((ifunc(#name "_resolver")));  \
   38     resolver_qual ret_type (*name##_resolver(void))args
   39 
   40 #define DEFINE_UIFUNC(qual, ret_type, name, args, resolver_qual)        \
   41     resolver_qual ret_type (*name##_resolver(uint32_t, uint32_t,        \
   42         uint32_t, uint32_t))args __used;                                \
   43     qual ret_type name args __attribute__((ifunc(#name "_resolver")));  \
   44     resolver_qual ret_type (*name##_resolver(                           \
   45         uint32_t cpu_feature __unused,                                  \
   46         uint32_t cpu_feature2 __unused,                                 \
   47         uint32_t cpu_stdext_feature __unused,                           \
   48         uint32_t cpu_stdext_feature2 __unused))args
   49 
   50 #endif

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FreeBSD/Linux Kernel Cross Reference sys/x86/include/ifunc.h

FreeBSD/Linux Kernel Cross Reference
sys/x86/include/ifunc.h