1*d5effb01SKonstantin Belousov /*- 2*d5effb01SKonstantin Belousov * Copyright (c) 2015, 2017 The FreeBSD Foundation 3*d5effb01SKonstantin Belousov * All rights reserved. 4*d5effb01SKonstantin Belousov * 5*d5effb01SKonstantin Belousov * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 6*d5effb01SKonstantin Belousov * under sponsorship from the FreeBSD Foundation. 7*d5effb01SKonstantin Belousov * 8*d5effb01SKonstantin Belousov * Redistribution and use in source and binary forms, with or without 9*d5effb01SKonstantin Belousov * modification, are permitted provided that the following conditions 10*d5effb01SKonstantin Belousov * are met: 11*d5effb01SKonstantin Belousov * 1. Redistributions of source code must retain the above copyright 12*d5effb01SKonstantin Belousov * notice, this list of conditions and the following disclaimer. 13*d5effb01SKonstantin Belousov * 2. Redistributions in binary form must reproduce the above copyright 14*d5effb01SKonstantin Belousov * notice, this list of conditions and the following disclaimer in the 15*d5effb01SKonstantin Belousov * documentation and/or other materials provided with the distribution. 16*d5effb01SKonstantin Belousov * 17*d5effb01SKonstantin Belousov * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18*d5effb01SKonstantin Belousov * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*d5effb01SKonstantin Belousov * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*d5effb01SKonstantin Belousov * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21*d5effb01SKonstantin Belousov * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*d5effb01SKonstantin Belousov * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*d5effb01SKonstantin Belousov * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*d5effb01SKonstantin Belousov * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*d5effb01SKonstantin Belousov * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*d5effb01SKonstantin Belousov * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*d5effb01SKonstantin Belousov * SUCH DAMAGE. 28*d5effb01SKonstantin Belousov * 29*d5effb01SKonstantin Belousov * $FreeBSD$ 30*d5effb01SKonstantin Belousov */ 31*d5effb01SKonstantin Belousov 32*d5effb01SKonstantin Belousov #ifndef __X86_IFUNC_H 33*d5effb01SKonstantin Belousov #define __X86_IFUNC_H 34*d5effb01SKonstantin Belousov 35*d5effb01SKonstantin Belousov #define DECLARE_LIFUNC(ret_type, name, args) \ 36*d5effb01SKonstantin Belousov ret_type name args 37*d5effb01SKonstantin Belousov 38*d5effb01SKonstantin Belousov #define DEFINE_LIFUNC(scope, selector_qual, ret_type, name, args) \ 39*d5effb01SKonstantin Belousov __asm__ (scope "\t" #name "\n" \ 40*d5effb01SKonstantin Belousov "\t.type\t" #name ",@function\n" \ 41*d5effb01SKonstantin Belousov #name ":\n" \ 42*d5effb01SKonstantin Belousov "\tjmp *" #name "_selector\n" \ 43*d5effb01SKonstantin Belousov "\t.size\t" #name ",\t. - "#name); \ 44*d5effb01SKonstantin Belousov selector_qual ret_type (*name##_selector)args __used; \ 45*d5effb01SKonstantin Belousov DECLARE_LIFUNC(ret_type, name, args) 46*d5effb01SKonstantin Belousov 47*d5effb01SKonstantin Belousov #define DEFINE_STATIC_LIFUNC(ret_type, name, args) \ 48*d5effb01SKonstantin Belousov DEFINE_LIFUNC(".local", static, ret_type, name, args) 49*d5effb01SKonstantin Belousov 50*d5effb01SKonstantin Belousov #define DEFINE_GLOBAL_LIFUNC(ret_type, name, args) \ 51*d5effb01SKonstantin Belousov DEFINE_LIFUNC(".globl", , ret_type, name, args) 52*d5effb01SKonstantin Belousov 53*d5effb01SKonstantin Belousov #define DEFINE_IFUNC(qual, ret_type, name, args, resolver_qual) \ 54*d5effb01SKonstantin Belousov resolver_qual ret_type (*name##_resolver(void))args __used; \ 55*d5effb01SKonstantin Belousov qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ 56*d5effb01SKonstantin Belousov resolver_qual ret_type (*name##_resolver(void))args 57*d5effb01SKonstantin Belousov 58*d5effb01SKonstantin Belousov #endif 59