ifunc.h (2521B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 33 #ifndef __POWERPC_IFUNC_H 34 #define __POWERPC_IFUNC_H 35 36 #include <sys/types.h> 37 38 #define DEFINE_IFUNC(qual, ret_type, name, args) \ 39 static ret_type (*name##_resolver(void))args __used; \ 40 qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ 41 static ret_type (*name##_resolver(void))args 42 43 #define DEFINE_UIFUNC(qual, ret_type, name, args) \ 44 static ret_type (*name##_resolver(register_t, register_t, \ 45 register_t, register_t, register_t, register_t, register_t, \ 46 register_t))args __used; \ 47 qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ 48 static ret_type (*name##_resolver( \ 49 register_t cpu_features, \ 50 register_t cpu_features2, \ 51 register_t arg3 __unused, \ 52 register_t arg4 __unused, \ 53 register_t arg5 __unused, \ 54 register_t arg6 __unused, \ 55 register_t arg7 __unused, \ 56 register_t arg8 __unused))args 57 58 #endif