1 /* $OpenBSD: archdep.h,v 1.8 2003/06/09 16:10:03 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 _I386_ARCHDEP_H_ 30 #define _I386_ARCHDEP_H_ 31 32 #define DL_MALLOC_ALIGN 8 /* Arch constraint or otherwise */ 33 34 #define MACHID EM_386 /* ELF e_machine ID value checked */ 35 36 #define RELTYPE Elf32_Rela 37 #define RELSIZE sizeof(Elf32_Rela) 38 39 #include <sys/mman.h> 40 #include <elf_abi.h> 41 #include <machine/reloc.h> 42 #include "syscall.h" 43 #include "util.h" 44 45 static inline void * 46 _dl_mmap(void *addr, unsigned int len, unsigned int prot, 47 unsigned int flags, int fd, off_t offset) 48 { 49 return((void *)_dl__syscall((quad_t)SYS_mmap, addr, len, prot, 50 flags, fd, 0, offset)); 51 } 52 53 static inline void * 54 _dl_mquery(void *addr, unsigned int len, unsigned int prot, 55 unsigned int flags, int fd, off_t offset) 56 { 57 return((void *)_dl__syscall((quad_t)SYS_mquery, addr, len, prot, 58 flags, fd, 0, offset)); 59 } 60 61 62 static inline void 63 RELOC_REL(Elf32_Rel *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v) 64 { 65 66 if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) { 67 *p += v; 68 } else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) { 69 *p += v + s->st_value; 70 } else { 71 _dl_printf("unknown bootstrap relocation\n"); 72 _dl_exit(6); 73 } 74 } 75 76 static inline void 77 RELOC_RELA(Elf32_Rela *r, const Elf32_Sym *s, Elf32_Addr *p, unsigned long v) 78 { 79 /* does i386 use RELA type relocations? - XXX */ 80 81 if (ELF32_R_TYPE(r->r_info) == RELOC_RELATIVE) { 82 *p = v + r->r_addend; 83 } else if (ELF32_R_TYPE(r->r_info) == RELOC_GLOB_DAT) { 84 *p = v + s->st_value + r->r_addend; 85 } else { 86 _dl_printf("unknown bootstrap relocation\n"); 87 _dl_exit(6); 88 } 89 } 90 91 #define RELOC_GOT(obj, offs) 92 93 #define GOT_PERMS PROT_READ 94 95 #endif /* _I386_ARCHDEP_H_ */ 96