1/* $NetBSD: kobj_machdep.c,v 1.1 2008/01/04 16:19:25 ad Exp $ */ 2 3/*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29/*- 30 * Copyright 1996-1998 John D. Polstra. 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 43 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 44 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 45 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 46 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 47 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 48 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 49 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 50 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 51 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 52 */ 53 54#include <sys/cdefs.h> 55__KERNEL_RCSID(0, "$NetBSD: kobj_machdep.c,v 1.1 2008/01/04 16:19:25 ad Exp $"); 56 57#define ELFSIZE ARCH_ELFSIZE 58 59#include <sys/param.h> 60#include <sys/systm.h> 61#include <sys/kobj.h> 62#include <sys/exec.h> 63#include <sys/exec_elf.h> 64 65int 66kobj_reloc(kobj_t ko, uintptr_t relocbase, const void *data, 67 bool isrela, bool local) 68{ 69 Elf_Addr *where; 70 Elf_Addr addr; 71 Elf_Addr addend; 72 uintptr_t rtype, symidx; 73 const Elf_Rel *rel; 74 const Elf_Rela *rela; 75 76 if (isrela) { 77 rela = (const Elf_Rela *)data; 78 where = (Elf_Addr *) (relocbase + rela->r_offset); 79 addend = rela->r_addend; 80 rtype = ELF_R_TYPE(rela->r_info); 81 symidx = ELF_R_SYM(rela->r_info); 82 } else { 83 rel = (const Elf_Rel *)data; 84 where = (Elf_Addr *) (relocbase + rel->r_offset); 85 addend = *where; 86 rtype = ELF_R_TYPE(rel->r_info); 87 symidx = ELF_R_SYM(rel->r_info); 88 } 89 90 switch (rtype) { 91 case R_ALPHA_NONE: 92 break; 93 94 case R_ALPHA_REFQUAD: 95 addr = kobj_sym_lookup(ko, symidx); 96 if (addr == 0) 97 return -1; 98 addr += addend; 99 if (*where != addr) 100 *where = addr; 101 break; 102 103 case R_ALPHA_GLOB_DAT: 104 addr = kobj_sym_lookup(ko, symidx); 105 if (addr == 0) 106 return -1; 107 addr += addend; 108 if (*where != addr) 109 *where = addr; 110 break; 111 112 case R_ALPHA_JMP_SLOT: 113 /* No point in lazy binding for kernel modules. */ 114 addr = kobj_sym_lookup(ko, symidx); 115 if (addr == 0) 116 return -1; 117 if (*where != addr) 118 *where = addr; 119 break; 120 121 case R_ALPHA_RELATIVE: 122 addr = relocbase + addend; 123 if (*where != addr) 124 *where = addr; 125 break; 126 127 case R_ALPHA_COPY: 128 /* 129 * There shouldn't be copy relocations in kernel 130 * objects. 131 */ 132 printf("kobj_reloc: unexpected R_COPY relocation\n"); 133 return -1; 134 135 default: 136 printf("kobj_reloc: unexpected relocation type %d\n", 137 (int)rtype); 138 return -1; 139 } 140 141 return 0; 142} 143 144int 145kobj_machdep(kobj_t ko, void *base, size_t size, bool load) 146{ 147 148 return 0; 149} 150