1/*	$OpenBSD: archdep.h,v 1.9 2023/11/18 16:26:17 deraadt Exp $ */
2
3/*
4 * Copyright (c) 1998 Per Fogelstrom, Opsycon AB
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#ifndef _AARCH64_ARCHDEP_H_
30#define _AARCH64_ARCHDEP_H_
31
32#define	RELOC_TAG	DT_RELA
33#define	MACHID		EM_AARCH64	/* ELF e_machine ID value checked */
34
35/* Only used in lib/csu/boot.h */
36#ifdef RCRT0
37
38static inline void
39RELOC_DYN(Elf_RelA *r, const Elf_Sym *s, Elf_Addr *p, unsigned long v)
40{
41	if (ELF_R_TYPE(r->r_info) == R_AARCH64_RELATIVE) {
42		*p = v + r->r_addend;
43	} else if (ELF_R_TYPE(r->r_info) == R_AARCH64_GLOB_DAT) {
44		*p = v + s->st_value + r->r_addend;
45	} else if (ELF_R_TYPE(r->r_info) == R_AARCH64_ABS64) {
46		*p = v + s->st_value + r->r_addend;
47	} else {
48		_csu_abort();
49	}
50}
51
52#endif /* RCRT0 */
53#endif /* _AARCH64_ARCHDEP_H_ */
54