xref: /freebsd/sys/powerpc/include/ifunc.h (revision 162ae9c834f6d9f9cb443bd62cceb23e0b5fef48)
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
61