1/*-
2 * Copyright (c) 2015-2018 The FreeBSD Foundation
3 *
4 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
5 * under sponsorship from the FreeBSD Foundation.
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
29#ifndef __X86_IFUNC_H
30#define	__X86_IFUNC_H
31
32#define	DEFINE_IFUNC(qual, ret_type, name, args)			\
33    static ret_type (*name##_resolver(void))args __used;		\
34    qual ret_type name args __attribute__((ifunc(#name "_resolver")));	\
35    static ret_type (*name##_resolver(void))args
36
37#define	DEFINE_UIFUNC(qual, ret_type, name, args)			\
38    static ret_type (*name##_resolver(uint32_t, uint32_t, uint32_t,	\
39	uint32_t))args __used;						\
40    qual ret_type name args __attribute__((ifunc(#name "_resolver")));	\
41    static ret_type (*name##_resolver(				\
42	uint32_t cpu_feature __unused,					\
43	uint32_t cpu_feature2 __unused,					\
44	uint32_t cpu_stdext_feature __unused,				\
45	uint32_t cpu_stdext_feature2 __unused))args
46
47#endif
48