1 /*- 2 * Copyright (c) 2019 Leandro Lupori 3 * Copyright (c) 2021 The FreeBSD Foundation 4 * 5 * Portions of this software were developed by Andrew Turner 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 static void 28 crt1_handle_rela(const Elf_Rela *r) 29 { 30 typedef Elf_Addr (*ifunc_resolver_t)( 31 uint64_t, uint64_t, uint64_t, uint64_t, 32 uint64_t, uint64_t, uint64_t, uint64_t); 33 Elf_Addr *ptr, *where, target; 34 35 switch (ELF_R_TYPE(r->r_info)) { 36 case R_AARCH64_IRELATIVE: 37 ptr = (Elf_Addr *)r->r_addend; 38 where = (Elf_Addr *)r->r_offset; 39 target = ((ifunc_resolver_t)ptr)(0, 0, 0, 0, 0, 0, 0, 0); 40 *where = target; 41 break; 42 } 43 } 44