1 /*- 2 * Copyright (c) 2015-2018 The FreeBSD Foundation 3 * Copyright (c) 2024 Jessica Clarke <jrtc27@FreeBSD.org> 4 * 5 * Part of 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 30 #ifndef __RISCV_IFUNC_H 31 #define __RISCV_IFUNC_H 32 33 #define DEFINE_IFUNC(qual, ret_type, name, args) \ 34 static ret_type (*name##_resolver(void))args __used; \ 35 qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ 36 static ret_type (*name##_resolver(void))args 37 38 #define DEFINE_UIFUNC(qual, ret_type, name, args) \ 39 static ret_type (*name##_resolver(unsigned long, unsigned long, \ 40 unsigned long, unsigned long, unsigned long, unsigned long, \ 41 unsigned long, unsigned long))args __used; \ 42 qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ 43 static ret_type (*name##_resolver(unsigned long elf_hwcap __unused, \ 44 unsigned long _arg2 __unused, unsigned long _arg3 __unused, \ 45 unsigned long _arg4 __unused, unsigned long _arg5 __unused, \ 46 unsigned long _arg6 __unused, unsigned long _arg7 __unused, \ 47 unsigned long _arg8 __unused))args 48 49 #endif 50