1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD AND BSD-2-Clause-NetBSD 3 * 4 * Copyright (c) 2013 M. Warner Losh. All Rights Reserved. 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY 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 * $FreeBSD$ 28 */ 29 30 /*- 31 * Copyright (c) 2013 The NetBSD Foundation, Inc. 32 * All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 * 55 * See below starting with the line with $NetBSD...$ for code this applies to. 56 */ 57 58 #ifndef __MIPS_ELF_H 59 #define __MIPS_ELF_H 60 61 /* FreeBSD specific bits - derived from FreeBSD specific files and changes to old elf.h */ 62 63 /* 64 * Define __ELF_WORD_SIZE based on the ABI, if not defined yet. This sets 65 * the proper defaults when we're not trying to do 32-bit on 64-bit systems. 66 * We include both 32 and 64 bit versions so we can support multiple ABIs. 67 */ 68 #ifndef __ELF_WORD_SIZE 69 #if defined(__mips_n64) 70 #define __ELF_WORD_SIZE 64 71 #else 72 #define __ELF_WORD_SIZE 32 73 #endif 74 #endif 75 #include <sys/elf32.h> 76 #include <sys/elf64.h> 77 #include <sys/elf_generic.h> 78 79 #define ELF_ARCH EM_MIPS 80 #define ELF_ARCH32 EM_MIPS 81 82 #define ELF_MACHINE_OK(x) ((x) == ELF_ARCH) 83 84 /* Define "machine" characteristics */ 85 #if __ELF_WORD_SIZE == 32 86 #define ELF_TARG_CLASS ELFCLASS32 87 #else 88 #define ELF_TARG_CLASS ELFCLASS64 89 #endif 90 #ifdef __MIPSEB__ 91 #define ELF_TARG_DATA ELFDATA2MSB 92 #else 93 #define ELF_TARG_DATA ELFDATA2LSB 94 #endif 95 #define ELF_TARG_MACH EM_MIPS 96 #define ELF_TARG_VER 1 97 98 /* 99 * Auxiliary vector entries for passing information to the interpreter. 100 * 101 * The i386 supplement to the SVR4 ABI specification names this "auxv_t", 102 * but POSIX lays claim to all symbols ending with "_t". 103 */ 104 typedef struct { /* Auxiliary vector entry on initial stack */ 105 int a_type; /* Entry type. */ 106 union { 107 int a_val; /* Integer value. */ 108 void *a_ptr; /* Address. */ 109 void (*a_fcn)(void); /* Function pointer (not used). */ 110 } a_un; 111 } Elf32_Auxinfo; 112 113 typedef struct { /* Auxiliary vector entry on initial stack */ 114 long a_type; /* Entry type. */ 115 union { 116 long a_val; /* Integer value. */ 117 void *a_ptr; /* Address. */ 118 void (*a_fcn)(void); /* Function pointer (not used). */ 119 } a_un; 120 } Elf64_Auxinfo; 121 122 __ElfType(Auxinfo); 123 124 /* Values for a_type. */ 125 #define AT_NULL 0 /* Terminates the vector. */ 126 #define AT_IGNORE 1 /* Ignored entry. */ 127 #define AT_EXECFD 2 /* File descriptor of program to load. */ 128 #define AT_PHDR 3 /* Program header of program already loaded. */ 129 #define AT_PHENT 4 /* Size of each program header entry. */ 130 #define AT_PHNUM 5 /* Number of program header entries. */ 131 #define AT_PAGESZ 6 /* Page size in bytes. */ 132 #define AT_BASE 7 /* Interpreter's base address. */ 133 #define AT_FLAGS 8 /* Flags (unused for i386). */ 134 #define AT_ENTRY 9 /* Where interpreter should transfer control. */ 135 #define AT_NOTELF 10 /* Program is not ELF ?? */ 136 #define AT_UID 11 /* Real uid. */ 137 #define AT_EUID 12 /* Effective uid. */ 138 #define AT_GID 13 /* Real gid. */ 139 #define AT_EGID 14 /* Effective gid. */ 140 #define AT_EXECPATH 15 /* Path to the executable. */ 141 #define AT_CANARY 16 /* Canary for SSP */ 142 #define AT_CANARYLEN 17 /* Length of the canary. */ 143 #define AT_OSRELDATE 18 /* OSRELDATE. */ 144 #define AT_NCPUS 19 /* Number of CPUs. */ 145 #define AT_PAGESIZES 20 /* Pagesizes. */ 146 #define AT_PAGESIZESLEN 21 /* Number of pagesizes. */ 147 #define AT_TIMEKEEP 22 /* Pointer to timehands. */ 148 #define AT_STACKPROT 23 /* Initial stack protection. */ 149 #define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */ 150 #define AT_HWCAP 25 /* CPU feature flags. */ 151 #define AT_HWCAP2 26 /* CPU feature flags 2. */ 152 153 #define AT_COUNT 27 /* Count of defined aux entry types. */ 154 155 #define ET_DYN_LOAD_ADDR 0x0120000 156 157 /* 158 * Constant to mark start of symtab/strtab saved by trampoline 159 */ 160 #define SYMTAB_MAGIC 0x64656267 161 162 /* from NetBSD's sys/mips/include/elf_machdep.h $NetBSD: elf_machdep.h,v 1.18 2013/05/23 21:39:49 christos Exp $ */ 163 164 /* mips relocs. */ 165 166 #define R_MIPS_NONE 0 167 #define R_MIPS_16 1 168 #define R_MIPS_32 2 169 #define R_MIPS_REL32 3 170 #define R_MIPS_REL R_MIPS_REL32 171 #define R_MIPS_26 4 172 #define R_MIPS_HI16 5 /* high 16 bits of symbol value */ 173 #define R_MIPS_LO16 6 /* low 16 bits of symbol value */ 174 #define R_MIPS_GPREL16 7 /* GP-relative reference */ 175 #define R_MIPS_LITERAL 8 /* Reference to literal section */ 176 #define R_MIPS_GOT16 9 /* Reference to global offset table */ 177 #define R_MIPS_GOT R_MIPS_GOT16 178 #define R_MIPS_PC16 10 /* 16 bit PC relative reference */ 179 #define R_MIPS_CALL16 11 /* 16 bit call thru glbl offset tbl */ 180 #define R_MIPS_CALL R_MIPS_CALL16 181 #define R_MIPS_GPREL32 12 182 183 /* 13, 14, 15 are not defined at this point. */ 184 #define R_MIPS_UNUSED1 13 185 #define R_MIPS_UNUSED2 14 186 #define R_MIPS_UNUSED3 15 187 188 /* 189 * The remaining relocs are apparently part of the 64-bit Irix ELF ABI. 190 */ 191 #define R_MIPS_SHIFT5 16 192 #define R_MIPS_SHIFT6 17 193 194 #define R_MIPS_64 18 195 #define R_MIPS_GOT_DISP 19 196 #define R_MIPS_GOT_PAGE 20 197 #define R_MIPS_GOT_OFST 21 198 #define R_MIPS_GOT_HI16 22 199 #define R_MIPS_GOT_LO16 23 200 #define R_MIPS_SUB 24 201 #define R_MIPS_INSERT_A 25 202 #define R_MIPS_INSERT_B 26 203 #define R_MIPS_DELETE 27 204 #define R_MIPS_HIGHER 28 205 #define R_MIPS_HIGHEST 29 206 #define R_MIPS_CALL_HI16 30 207 #define R_MIPS_CALL_LO16 31 208 #define R_MIPS_SCN_DISP 32 209 #define R_MIPS_REL16 33 210 #define R_MIPS_ADD_IMMEDIATE 34 211 #define R_MIPS_PJUMP 35 212 #define R_MIPS_RELGOT 36 213 #define R_MIPS_JALR 37 214 /* TLS relocations */ 215 216 #define R_MIPS_TLS_DTPMOD32 38 /* Module number 32 bit */ 217 #define R_MIPS_TLS_DTPREL32 39 /* Module-relative offset 32 bit */ 218 #define R_MIPS_TLS_DTPMOD64 40 /* Module number 64 bit */ 219 #define R_MIPS_TLS_DTPREL64 41 /* Module-relative offset 64 bit */ 220 #define R_MIPS_TLS_GD 42 /* 16 bit GOT offset for GD */ 221 #define R_MIPS_TLS_LDM 43 /* 16 bit GOT offset for LDM */ 222 #define R_MIPS_TLS_DTPREL_HI16 44 /* Module-relative offset, high 16 bits */ 223 #define R_MIPS_TLS_DTPREL_LO16 45 /* Module-relative offset, low 16 bits */ 224 #define R_MIPS_TLS_GOTTPREL 46 /* 16 bit GOT offset for IE */ 225 #define R_MIPS_TLS_TPREL32 47 /* TP-relative offset, 32 bit */ 226 #define R_MIPS_TLS_TPREL64 48 /* TP-relative offset, 64 bit */ 227 #define R_MIPS_TLS_TPREL_HI16 49 /* TP-relative offset, high 16 bits */ 228 #define R_MIPS_TLS_TPREL_LO16 50 /* TP-relative offset, low 16 bits */ 229 230 #define R_MIPS_max 51 231 232 #define R_TYPE(name) __CONCAT(R_MIPS_,name) 233 234 #define R_MIPS16_min 100 235 #define R_MIPS16_26 100 236 #define R_MIPS16_GPREL 101 237 #define R_MIPS16_GOT16 102 238 #define R_MIPS16_CALL16 103 239 #define R_MIPS16_HI16 104 240 #define R_MIPS16_LO16 105 241 #define R_MIPS16_max 106 242 243 #define R_MIPS_COPY 126 244 #define R_MIPS_JUMP_SLOT 127 245 246 #endif /* __MIPS_ELF_H */ 247