1 /* $OpenBSD: archdep.h,v 1.13 2010/01/02 12:16:35 kettenis 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 _ALPHA_ARCHDEP_H_ 30 #define _ALPHA_ARCHDEP_H_ 31 32 #define DL_MALLOC_ALIGN 8 /* Arch constraint or otherwise */ 33 34 #define MACHID EM_ALPHA_EXP /* ELF e_machine ID value checked */ 35 36 #define RELTYPE Elf64_Rela 37 #define RELSIZE sizeof(Elf64_Rela) 38 39 #include <elf_abi.h> 40 #include <machine/reloc.h> 41 #include "syscall.h" 42 #include "util.h" 43 44 #define RTLD_PROTECT_PLT 45 46 static inline void 47 RELOC_REL(Elf64_Rel *r, const Elf64_Sym *s, Elf64_Addr *p, unsigned long v) 48 { 49 /* Alpha does not use REL type relocations */ 50 _dl_exit(20); 51 } 52 53 static inline void 54 RELOC_RELA(Elf64_Rela *r, const Elf64_Sym *s, Elf64_Addr *p, unsigned long v, 55 Elf_Addr *pltgot) 56 { 57 if (ELF64_R_TYPE(r->r_info) == RELOC_RELATIVE) { 58 /* handled by _reloc_alpha_got */ 59 } else if (ELF64_R_TYPE(r->r_info) == RELOC_JMP_SLOT) { 60 Elf64_Addr val = v + s->st_value + r->r_addend - 61 (Elf64_Addr)(p); 62 *p = val; 63 __asm __volatile("imb" : : : "memory"); 64 } else if (ELF64_R_TYPE(r->r_info) == RELOC_GLOB_DAT) { 65 *p = v + s->st_value + r->r_addend; 66 } else { 67 _dl_printf("unknown bootstrap relocation\n"); 68 _dl_exit(6); 69 } 70 } 71 72 #define RELOC_GOT(obj, offs) 73 74 #define GOT_PERMS PROT_READ 75 76 #endif /* _ALPHA_ARCHDEP_H_ */ 77