| 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 |