151015e6dSKonstantin Belousov /*-
251015e6dSKonstantin Belousov * Copyright (c) 2019 Leandro Lupori
351015e6dSKonstantin Belousov * Copyright (c) 2021 The FreeBSD Foundation
451015e6dSKonstantin Belousov *
551015e6dSKonstantin Belousov * Portions of this software were developed by Andrew Turner
651015e6dSKonstantin Belousov * under sponsorship from the FreeBSD Foundation.
751015e6dSKonstantin Belousov *
851015e6dSKonstantin Belousov * Redistribution and use in source and binary forms, with or without
951015e6dSKonstantin Belousov * modification, are permitted provided that the following conditions
1051015e6dSKonstantin Belousov * are met:
1151015e6dSKonstantin Belousov * 1. Redistributions of source code must retain the above copyright
1251015e6dSKonstantin Belousov * notice, this list of conditions and the following disclaimer.
1351015e6dSKonstantin Belousov *
1451015e6dSKonstantin Belousov * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1551015e6dSKonstantin Belousov * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1651015e6dSKonstantin Belousov * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1751015e6dSKonstantin Belousov * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1851015e6dSKonstantin Belousov * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1951015e6dSKonstantin Belousov * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2051015e6dSKonstantin Belousov * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2151015e6dSKonstantin Belousov * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2251015e6dSKonstantin Belousov * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2351015e6dSKonstantin Belousov * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2451015e6dSKonstantin Belousov * SUCH DAMAGE.
2551015e6dSKonstantin Belousov */
2651015e6dSKonstantin Belousov
27*9684658eSJessica Clarke #include <sys/cdefs.h>
28*9684658eSJessica Clarke
29*9684658eSJessica Clarke static void
ifunc_init(const Elf_Auxinfo * aux __unused)30*9684658eSJessica Clarke ifunc_init(const Elf_Auxinfo *aux __unused)
31*9684658eSJessica Clarke {
32*9684658eSJessica Clarke }
33*9684658eSJessica Clarke
3451015e6dSKonstantin Belousov static void
crt1_handle_rela(const Elf_Rela * r)3551015e6dSKonstantin Belousov crt1_handle_rela(const Elf_Rela *r)
3651015e6dSKonstantin Belousov {
3751015e6dSKonstantin Belousov typedef Elf_Addr (*ifunc_resolver_t)(
3851015e6dSKonstantin Belousov uint64_t, uint64_t, uint64_t, uint64_t,
3951015e6dSKonstantin Belousov uint64_t, uint64_t, uint64_t, uint64_t);
4051015e6dSKonstantin Belousov Elf_Addr *ptr, *where, target;
4151015e6dSKonstantin Belousov
4251015e6dSKonstantin Belousov switch (ELF_R_TYPE(r->r_info)) {
4351015e6dSKonstantin Belousov case R_AARCH64_IRELATIVE:
4451015e6dSKonstantin Belousov ptr = (Elf_Addr *)r->r_addend;
4551015e6dSKonstantin Belousov where = (Elf_Addr *)r->r_offset;
4651015e6dSKonstantin Belousov target = ((ifunc_resolver_t)ptr)(0, 0, 0, 0, 0, 0, 0, 0);
4751015e6dSKonstantin Belousov *where = target;
4851015e6dSKonstantin Belousov break;
4951015e6dSKonstantin Belousov }
5051015e6dSKonstantin Belousov }
51