1 /* $OpenBSD: archdep.h,v 1.14 2021/11/14 22:07:38 guenther 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 _X86_64_ARCHDEP_H_ 30 #define _X86_64_ARCHDEP_H_ 31 32 #define RELOC_TAG DT_RELA 33 #define MACHID EM_AMD64 /* ELF e_machine ID value checked */ 34 35 #include <elf.h> 36 #include <machine/reloc.h> 37 #include "syscall.h" 38 #include "util.h" 39 40 41 /* Only used in lib/csu/boot.h */ 42 static inline void 43 RELOC_DYN(Elf_RelA *r, const Elf_Sym *s, Elf_Addr *p, unsigned long v) 44 { 45 if (ELF_R_TYPE(r->r_info) == R_X86_64_RELATIVE) { 46 *p = v + r->r_addend; 47 } else if (ELF_R_TYPE(r->r_info) == R_X86_64_GLOB_DAT) { 48 *p = v + s->st_value + r->r_addend; 49 } else if (ELF_R_TYPE(r->r_info) == R_X86_64_64) { 50 *p = v + s->st_value + r->r_addend; 51 } else { 52 _dl_exit(6); 53 } 54 } 55 56 #endif /* _X86_64_ARCHDEP_H_ */ 57