1 /* $NetBSD: exec_elf.h,v 1.3 2010/08/28 21:30:02 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 1994 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _SYS_EXEC_ELF_H_ 33 #define _SYS_EXEC_ELF_H_ 34 35 /* 36 * The current ELF ABI specification is available at: 37 * http://www.sco.com/developers/gabi/ 38 * 39 * Current header definitions are in: 40 * http://www.sco.com/developers/gabi/latest/ch4.eheader.html 41 */ 42 43 #if defined(_KERNEL) || defined(_STANDALONE) 44 #include <sys/types.h> 45 #else 46 #include <inttypes.h> 47 #endif /* _KERNEL || _STANDALONE */ 48 49 typedef uint8_t Elf_Byte; 50 51 typedef uint32_t Elf32_Addr; 52 #define ELF32_FSZ_ADDR 4 53 typedef uint32_t Elf32_Off; 54 #define ELF32_FSZ_OFF 4 55 typedef int32_t Elf32_Sword; 56 #define ELF32_FSZ_SWORD 4 57 typedef uint32_t Elf32_Word; 58 #define ELF32_FSZ_WORD 4 59 typedef uint16_t Elf32_Half; 60 #define ELF32_FSZ_HALF 2 61 62 typedef uint64_t Elf64_Addr; 63 #define ELF64_FSZ_ADDR 8 64 typedef uint64_t Elf64_Off; 65 #define ELF64_FSZ_OFF 8 66 typedef int32_t Elf64_Shalf; 67 #define ELF64_FSZ_SHALF 4 68 69 #ifndef ELF64_FSZ_SWORD 70 typedef int32_t Elf64_Sword; 71 #define ELF64_FSZ_SWORD 4 72 #endif /* ELF64_FSZ_SWORD */ 73 #ifndef ELF64_FSZ_WORD 74 typedef uint32_t Elf64_Word; 75 #define ELF64_FSZ_WORD 4 76 #endif /* ELF64_FSZ_WORD */ 77 78 typedef int64_t Elf64_Sxword; 79 #define ELF64_FSZ_XWORD 8 80 typedef uint64_t Elf64_Xword; 81 #define ELF64_FSZ_XWORD 8 82 typedef uint16_t Elf64_Half; 83 #define ELF64_FSZ_HALF 2 84 85 /* 86 * ELF Header 87 */ 88 #define ELF_NIDENT 16 89 90 typedef struct { 91 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ 92 Elf32_Half e_type; /* file type */ 93 Elf32_Half e_machine; /* machine type */ 94 Elf32_Word e_version; /* version number */ 95 Elf32_Addr e_entry; /* entry point */ 96 Elf32_Off e_phoff; /* Program hdr offset */ 97 Elf32_Off e_shoff; /* Section hdr offset */ 98 Elf32_Word e_flags; /* Processor flags */ 99 Elf32_Half e_ehsize; /* sizeof ehdr */ 100 Elf32_Half e_phentsize; /* Program header entry size */ 101 Elf32_Half e_phnum; /* Number of program headers */ 102 Elf32_Half e_shentsize; /* Section header entry size */ 103 Elf32_Half e_shnum; /* Number of section headers */ 104 Elf32_Half e_shstrndx; /* String table index */ 105 } Elf32_Ehdr; 106 107 typedef struct { 108 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ 109 Elf64_Half e_type; /* file type */ 110 Elf64_Half e_machine; /* machine type */ 111 Elf64_Word e_version; /* version number */ 112 Elf64_Addr e_entry; /* entry point */ 113 Elf64_Off e_phoff; /* Program hdr offset */ 114 Elf64_Off e_shoff; /* Section hdr offset */ 115 Elf64_Word e_flags; /* Processor flags */ 116 Elf64_Half e_ehsize; /* sizeof ehdr */ 117 Elf64_Half e_phentsize; /* Program header entry size */ 118 Elf64_Half e_phnum; /* Number of program headers */ 119 Elf64_Half e_shentsize; /* Section header entry size */ 120 Elf64_Half e_shnum; /* Number of section headers */ 121 Elf64_Half e_shstrndx; /* String table index */ 122 } Elf64_Ehdr; 123 124 /* e_ident offsets */ 125 #define EI_MAG0 0 /* '\177' */ 126 #define EI_MAG1 1 /* 'E' */ 127 #define EI_MAG2 2 /* 'L' */ 128 #define EI_MAG3 3 /* 'F' */ 129 #define EI_CLASS 4 /* File class */ 130 #define EI_DATA 5 /* Data encoding */ 131 #define EI_VERSION 6 /* File version */ 132 #define EI_OSABI 7 /* Operating system/ABI identification */ 133 #define EI_ABIVERSION 8 /* ABI version */ 134 #define EI_PAD 9 /* Start of padding bytes up to EI_NIDENT*/ 135 #define EI_NIDENT 16 /* First non-ident header byte */ 136 137 /* e_ident[EI_MAG0,EI_MAG3] */ 138 #define ELFMAG0 0x7f 139 #define ELFMAG1 'E' 140 #define ELFMAG2 'L' 141 #define ELFMAG3 'F' 142 #define ELFMAG "\177ELF" 143 #define SELFMAG 4 144 145 /* e_ident[EI_CLASS] */ 146 #define ELFCLASSNONE 0 /* Invalid class */ 147 #define ELFCLASS32 1 /* 32-bit objects */ 148 #define ELFCLASS64 2 /* 64-bit objects */ 149 #define ELFCLASSNUM 3 150 151 /* e_ident[EI_DATA] */ 152 #define ELFDATANONE 0 /* Invalid data encoding */ 153 #define ELFDATA2LSB 1 /* 2's complement values, LSB first */ 154 #define ELFDATA2MSB 2 /* 2's complement values, MSB first */ 155 156 /* e_ident[EI_VERSION] */ 157 #define EV_NONE 0 /* Invalid version */ 158 #define EV_CURRENT 1 /* Current version */ 159 #define EV_NUM 2 160 161 /* e_ident[EI_OSABI] */ 162 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ 163 #define ELFOSABI_HPUX 1 /* HP-UX operating system */ 164 #define ELFOSABI_NETBSD 2 /* NetBSD */ 165 #define ELFOSABI_LINUX 3 /* GNU/Linux */ 166 #define ELFOSABI_HURD 4 /* GNU/Hurd */ 167 #define ELFOSABI_86OPEN 5 /* 86Open */ 168 #define ELFOSABI_SOLARIS 6 /* Solaris */ 169 #define ELFOSABI_MONTEREY 7 /* Monterey */ 170 #define ELFOSABI_IRIX 8 /* IRIX */ 171 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 172 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */ 173 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 174 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 175 /* Unofficial OSABIs follow */ 176 #define ELFOSABI_ARM 97 /* ARM */ 177 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ 178 179 /* e_type */ 180 #define ET_NONE 0 /* No file type */ 181 #define ET_REL 1 /* Relocatable file */ 182 #define ET_EXEC 2 /* Executable file */ 183 #define ET_DYN 3 /* Shared object file */ 184 #define ET_CORE 4 /* Core file */ 185 #define ET_NUM 5 186 187 #define ET_LOOS 0xfe00 /* Operating system specific range */ 188 #define ET_HIOS 0xfeff 189 #define ET_LOPROC 0xff00 /* Processor-specific range */ 190 #define ET_HIPROC 0xffff 191 192 /* e_machine */ 193 #define EM_NONE 0 /* No machine */ 194 #define EM_M32 1 /* AT&T WE 32100 */ 195 #define EM_SPARC 2 /* SPARC */ 196 #define EM_386 3 /* Intel 80386 */ 197 #define EM_68K 4 /* Motorola 68000 */ 198 #define EM_88K 5 /* Motorola 88000 */ 199 #define EM_486 6 /* Intel 80486 */ 200 #define EM_860 7 /* Intel 80860 */ 201 #define EM_MIPS 8 /* MIPS I Architecture */ 202 #define EM_S370 9 /* Amdahl UTS on System/370 */ 203 #define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */ 204 /* 11-14 - Reserved */ 205 #define EM_RS6000 11 /* IBM RS/6000 XXX reserved */ 206 #define EM_PARISC 15 /* Hewlett-Packard PA-RISC */ 207 #define EM_NCUBE 16 /* NCube XXX reserved */ 208 #define EM_VPP500 17 /* Fujitsu VPP500 */ 209 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 210 #define EM_960 19 /* Intel 80960 */ 211 #define EM_PPC 20 /* PowerPC */ 212 #define EM_PPC64 21 /* 64-bit PowerPC */ 213 /* 22-35 - Reserved */ 214 #define EM_V800 36 /* NEC V800 */ 215 #define EM_FR20 37 /* Fujitsu FR20 */ 216 #define EM_RH32 38 /* TRW RH-32 */ 217 #define EM_RCE 39 /* Motorola RCE */ 218 #define EM_ARM 40 /* Advanced RISC Machines ARM */ 219 #define EM_ALPHA 41 /* DIGITAL Alpha */ 220 #define EM_SH 42 /* Hitachi Super-H */ 221 #define EM_SPARCV9 43 /* SPARC Version 9 */ 222 #define EM_TRICORE 44 /* Siemens Tricore */ 223 #define EM_ARC 45 /* Argonaut RISC Core */ 224 #define EM_H8_300 46 /* Hitachi H8/300 */ 225 #define EM_H8_300H 47 /* Hitachi H8/300H */ 226 #define EM_H8S 48 /* Hitachi H8S */ 227 #define EM_H8_500 49 /* Hitachi H8/500 */ 228 #define EM_IA_64 50 /* Intel Merced Processor */ 229 #define EM_MIPS_X 51 /* Stanford MIPS-X */ 230 #define EM_COLDFIRE 52 /* Motorola Coldfire */ 231 #define EM_68HC12 53 /* Motorola MC68HC12 */ 232 #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator */ 233 #define EM_PCP 55 /* Siemens PCP */ 234 #define EM_NCPU 56 /* Sony nCPU embedded RISC processor */ 235 #define EM_NDR1 57 /* Denso NDR1 microprocessor */ 236 #define EM_STARCORE 58 /* Motorola Star*Core processor */ 237 #define EM_ME16 59 /* Toyota ME16 processor */ 238 #define EM_ST100 60 /* STMicroelectronics ST100 processor */ 239 #define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded family processor */ 240 #define EM_X86_64 62 /* AMD x86-64 architecture */ 241 #define EM_PDSP 63 /* Sony DSP Processor */ 242 #define EM_PDP10 64 /* Digital Equipment Corp. PDP-10 */ 243 #define EM_PDP11 65 /* Digital Equipment Corp. PDP-11 */ 244 #define EM_FX66 66 /* Siemens FX66 microcontroller */ 245 #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */ 246 #define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */ 247 #define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */ 248 #define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */ 249 #define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */ 250 #define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */ 251 #define EM_SVX 73 /* Silicon Graphics SVx */ 252 #define EM_ST19 74 /* STMicroelectronics ST19 8-bit CPU */ 253 #define EM_VAX 75 /* Digital VAX */ 254 #define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */ 255 #define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */ 256 #define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */ 257 #define EM_ZSP 79 /* LSI Logic's 16-bit DSP processor */ 258 #define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */ 259 #define EM_HUANY 81 /* Harvard's machine-independent format */ 260 #define EM_PRISM 82 /* SiTera Prism */ 261 #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ 262 #define EM_FR30 84 /* Fujitsu FR30 */ 263 #define EM_D10V 85 /* Mitsubishi D10V */ 264 #define EM_D30V 86 /* Mitsubishi D30V */ 265 #define EM_V850 87 /* NEC v850 */ 266 #define EM_M32R 88 /* Mitsubishi M32R */ 267 #define EM_MN10300 89 /* Matsushita MN10300 */ 268 #define EM_MN10200 90 /* Matsushita MN10200 */ 269 #define EM_PJ 91 /* picoJava */ 270 #define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */ 271 #define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */ 272 #define EM_XTENSA 94 /* Tensilica Xtensa Architecture */ 273 #define EM_NS32K 97 /* National Semiconductor 32000 series */ 274 275 /* Unofficial machine types follow */ 276 #define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */ 277 #define EM_NUM 36903 278 279 /* 280 * Program Header 281 */ 282 typedef struct { 283 Elf32_Word p_type; /* entry type */ 284 Elf32_Off p_offset; /* offset */ 285 Elf32_Addr p_vaddr; /* virtual address */ 286 Elf32_Addr p_paddr; /* physical address */ 287 Elf32_Word p_filesz; /* file size */ 288 Elf32_Word p_memsz; /* memory size */ 289 Elf32_Word p_flags; /* flags */ 290 Elf32_Word p_align; /* memory & file alignment */ 291 } Elf32_Phdr; 292 293 typedef struct { 294 Elf64_Word p_type; /* entry type */ 295 Elf64_Word p_flags; /* flags */ 296 Elf64_Off p_offset; /* offset */ 297 Elf64_Addr p_vaddr; /* virtual address */ 298 Elf64_Addr p_paddr; /* physical address */ 299 Elf64_Xword p_filesz; /* file size */ 300 Elf64_Xword p_memsz; /* memory size */ 301 Elf64_Xword p_align; /* memory & file alignment */ 302 } Elf64_Phdr; 303 304 /* p_type */ 305 #define PT_NULL 0 /* Program header table entry unused */ 306 #define PT_LOAD 1 /* Loadable program segment */ 307 #define PT_DYNAMIC 2 /* Dynamic linking information */ 308 #define PT_INTERP 3 /* Program interpreter */ 309 #define PT_NOTE 4 /* Auxiliary information */ 310 #define PT_SHLIB 5 /* Reserved, unspecified semantics */ 311 #define PT_PHDR 6 /* Entry for header table itself */ 312 #define PT_NUM 7 313 314 #define PT_LOOS 0x60000000 /* OS-specific range */ 315 #define PT_HIOS 0x6fffffff 316 #define PT_LOPROC 0x70000000 /* Processor-specific range */ 317 #define PT_HIPROC 0x7fffffff 318 319 #define PT_MIPS_REGINFO 0x70000000 320 321 /* p_flags */ 322 #define PF_R 0x4 /* Segment is readable */ 323 #define PF_W 0x2 /* Segment is writable */ 324 #define PF_X 0x1 /* Segment is executable */ 325 326 #define PF_MASKOS 0x0ff00000 /* Operating system specific values */ 327 #define PF_MASKPROC 0xf0000000 /* Processor-specific values */ 328 329 /* 330 * Section Headers 331 */ 332 typedef struct { 333 Elf32_Word sh_name; /* section name (.shstrtab index) */ 334 Elf32_Word sh_type; /* section type */ 335 Elf32_Word sh_flags; /* section flags */ 336 Elf32_Addr sh_addr; /* virtual address */ 337 Elf32_Off sh_offset; /* file offset */ 338 Elf32_Word sh_size; /* section size */ 339 Elf32_Word sh_link; /* link to another */ 340 Elf32_Word sh_info; /* misc info */ 341 Elf32_Word sh_addralign; /* memory alignment */ 342 Elf32_Word sh_entsize; /* table entry size */ 343 } Elf32_Shdr; 344 345 typedef struct { 346 Elf64_Word sh_name; /* section name (.shstrtab index) */ 347 Elf64_Word sh_type; /* section type */ 348 Elf64_Xword sh_flags; /* section flags */ 349 Elf64_Addr sh_addr; /* virtual address */ 350 Elf64_Off sh_offset; /* file offset */ 351 Elf64_Xword sh_size; /* section size */ 352 Elf64_Word sh_link; /* link to another */ 353 Elf64_Word sh_info; /* misc info */ 354 Elf64_Xword sh_addralign; /* memory alignment */ 355 Elf64_Xword sh_entsize; /* table entry size */ 356 } Elf64_Shdr; 357 358 /* sh_type */ 359 #define SHT_NULL 0 /* Section header table entry unused */ 360 #define SHT_PROGBITS 1 /* Program information */ 361 #define SHT_SYMTAB 2 /* Symbol table */ 362 #define SHT_STRTAB 3 /* String table */ 363 #define SHT_RELA 4 /* Relocation information w/ addend */ 364 #define SHT_HASH 5 /* Symbol hash table */ 365 #define SHT_DYNAMIC 6 /* Dynamic linking information */ 366 #define SHT_NOTE 7 /* Auxiliary information */ 367 #define SHT_NOBITS 8 /* No space allocated in file image */ 368 #define SHT_REL 9 /* Relocation information w/o addend */ 369 #define SHT_SHLIB 10 /* Reserved, unspecified semantics */ 370 #define SHT_DYNSYM 11 /* Symbol table for dynamic linker */ 371 #define SHT_NUM 12 372 373 #define SHT_LOOS 0x60000000 /* Operating system specific range */ 374 #define SHT_HIOS 0x6fffffff 375 #define SHT_LOPROC 0x70000000 /* Processor-specific range */ 376 #define SHT_HIPROC 0x7fffffff 377 #define SHT_LOUSER 0x80000000 /* Application-specific range */ 378 #define SHT_HIUSER 0xffffffff 379 380 /* sh_flags */ 381 #define SHF_WRITE 0x1 /* Section contains writable data */ 382 #define SHF_ALLOC 0x2 /* Section occupies memory */ 383 #define SHF_EXECINSTR 0x4 /* Section contains executable insns */ 384 385 #define SHF_MASKOS 0x0f000000 /* Operating system specific values */ 386 #define SHF_MASKPROC 0xf0000000 /* Processor-specific values */ 387 388 /* 389 * Symbol Table 390 */ 391 typedef struct { 392 Elf32_Word st_name; /* Symbol name (.symtab index) */ 393 Elf32_Word st_value; /* value of symbol */ 394 Elf32_Word st_size; /* size of symbol */ 395 Elf_Byte st_info; /* type / binding attrs */ 396 Elf_Byte st_other; /* unused */ 397 Elf32_Half st_shndx; /* section index of symbol */ 398 } Elf32_Sym; 399 400 typedef struct { 401 Elf64_Word st_name; /* Symbol name (.symtab index) */ 402 Elf_Byte st_info; /* type / binding attrs */ 403 Elf_Byte st_other; /* unused */ 404 Elf64_Half st_shndx; /* section index of symbol */ 405 Elf64_Addr st_value; /* value of symbol */ 406 Elf64_Xword st_size; /* size of symbol */ 407 } Elf64_Sym; 408 409 /* Symbol Table index of the undefined symbol */ 410 #define ELF_SYM_UNDEFINED 0 411 412 /* st_info: Symbol Bindings */ 413 #define STB_LOCAL 0 /* local symbol */ 414 #define STB_GLOBAL 1 /* global symbol */ 415 #define STB_WEAK 2 /* weakly defined global symbol */ 416 #define STB_NUM 3 417 418 #define STB_LOOS 10 /* Operating system specific range */ 419 #define STB_HIOS 12 420 #define STB_LOPROC 13 /* Processor-specific range */ 421 #define STB_HIPROC 15 422 423 /* st_info: Symbol Types */ 424 #define STT_NOTYPE 0 /* Type not specified */ 425 #define STT_OBJECT 1 /* Associated with a data object */ 426 #define STT_FUNC 2 /* Associated with a function */ 427 #define STT_SECTION 3 /* Associated with a section */ 428 #define STT_FILE 4 /* Associated with a file name */ 429 #define STT_NUM 5 430 431 #define STT_LOOS 10 /* Operating system specific range */ 432 #define STT_HIOS 12 433 #define STT_LOPROC 13 /* Processor-specific range */ 434 #define STT_HIPROC 15 435 436 /* st_info utility macros */ 437 #define ELF32_ST_BIND(info) ((Elf32_Word)(info) >> 4) 438 #define ELF32_ST_TYPE(info) ((Elf32_Word)(info) & 0xf) 439 #define ELF32_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | ((type) & 0xf))) 440 441 #define ELF64_ST_BIND(info) ((Elf64_Xword)(info) >> 4) 442 #define ELF64_ST_TYPE(info) ((Elf64_Xword)(info) & 0xf) 443 #define ELF64_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | ((type) & 0xf))) 444 445 /* 446 * Special section indexes 447 */ 448 #define SHN_UNDEF 0 /* Undefined section */ 449 450 #define SHN_LORESERVE 0xff00 /* Reserved range */ 451 #define SHN_ABS 0xfff1 /* Absolute symbols */ 452 #define SHN_COMMON 0xfff2 /* Common symbols */ 453 #define SHN_HIRESERVE 0xffff 454 455 #define SHN_LOPROC 0xff00 /* Processor-specific range */ 456 #define SHN_HIPROC 0xff1f 457 #define SHN_LOOS 0xff20 /* Operating system specific range */ 458 #define SHN_HIOS 0xff3f 459 460 #define SHN_MIPS_ACOMMON 0xff00 461 #define SHN_MIPS_TEXT 0xff01 462 #define SHN_MIPS_DATA 0xff02 463 #define SHN_MIPS_SCOMMON 0xff03 464 465 /* 466 * Relocation Entries 467 */ 468 typedef struct { 469 Elf32_Word r_offset; /* where to do it */ 470 Elf32_Word r_info; /* index & type of relocation */ 471 } Elf32_Rel; 472 473 typedef struct { 474 Elf32_Word r_offset; /* where to do it */ 475 Elf32_Word r_info; /* index & type of relocation */ 476 Elf32_Sword r_addend; /* adjustment value */ 477 } Elf32_Rela; 478 479 /* r_info utility macros */ 480 #define ELF32_R_SYM(info) ((info) >> 8) 481 #define ELF32_R_TYPE(info) ((info) & 0xff) 482 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 483 484 typedef struct { 485 Elf64_Addr r_offset; /* where to do it */ 486 Elf64_Xword r_info; /* index & type of relocation */ 487 } Elf64_Rel; 488 489 typedef struct { 490 Elf64_Addr r_offset; /* where to do it */ 491 Elf64_Xword r_info; /* index & type of relocation */ 492 Elf64_Sxword r_addend; /* adjustment value */ 493 } Elf64_Rela; 494 495 /* r_info utility macros */ 496 #define ELF64_R_SYM(info) ((info) >> 32) 497 #define ELF64_R_TYPE(info) ((info) & 0xffffffff) 498 #define ELF64_R_INFO(sym,type) (((sym) << 32) + (type)) 499 500 /* 501 * Dynamic Section structure array 502 */ 503 typedef struct { 504 Elf32_Word d_tag; /* entry tag value */ 505 union { 506 Elf32_Addr d_ptr; 507 Elf32_Word d_val; 508 } d_un; 509 } Elf32_Dyn; 510 511 typedef struct { 512 Elf64_Xword d_tag; /* entry tag value */ 513 union { 514 Elf64_Addr d_ptr; 515 Elf64_Xword d_val; 516 } d_un; 517 } Elf64_Dyn; 518 519 /* d_tag */ 520 #define DT_NULL 0 /* Marks end of dynamic array */ 521 #define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */ 522 #define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */ 523 #define DT_PLTGOT 3 /* Address of PLT and/or GOT */ 524 #define DT_HASH 4 /* Address of symbol hash table */ 525 #define DT_STRTAB 5 /* Address of string table */ 526 #define DT_SYMTAB 6 /* Address of symbol table */ 527 #define DT_RELA 7 /* Address of Rela relocation table */ 528 #define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */ 529 #define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */ 530 #define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */ 531 #define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */ 532 #define DT_INIT 12 /* Address of initialization function */ 533 #define DT_FINI 13 /* Address of termination function */ 534 #define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */ 535 #define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */ 536 #define DT_SYMBOLIC 16 /* Start symbol search within local object */ 537 #define DT_REL 17 /* Address of Rel relocation table */ 538 #define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */ 539 #define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */ 540 #define DT_PLTREL 20 /* Type of PLT relocation entries */ 541 #define DT_DEBUG 21 /* Used for debugging; unspecified */ 542 #define DT_TEXTREL 22 /* Relocations might modify non-writable seg */ 543 #define DT_JMPREL 23 /* Address of relocations associated with PLT */ 544 #define DT_BIND_NOW 24 /* Process all relocations at load-time */ 545 #define DT_INIT_ARRAY 25 /* Address of initialization function array */ 546 #define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */ 547 #define DT_INIT_ARRAYSZ 27 /* Address of termination function array */ 548 #define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/ 549 #define DT_NUM 29 550 551 #define DT_LOOS 0x60000000 /* Operating system specific range */ 552 #define DT_HIOS 0x6fffffff 553 #define DT_LOPROC 0x70000000 /* Processor-specific range */ 554 #define DT_HIPROC 0x7fffffff 555 556 /* 557 * Auxiliary Vectors 558 */ 559 typedef struct { 560 Elf32_Word a_type; /* 32-bit id */ 561 Elf32_Word a_v; /* 32-bit id */ 562 } Aux32Info; 563 564 typedef struct { 565 Elf64_Word a_type; /* 32-bit id */ 566 Elf64_Xword a_v; /* 64-bit id */ 567 } Aux64Info; 568 569 /* a_type */ 570 #define AT_NULL 0 /* Marks end of array */ 571 #define AT_IGNORE 1 /* No meaning, a_un is undefined */ 572 #define AT_EXECFD 2 /* Open file descriptor of object file */ 573 #define AT_PHDR 3 /* &phdr[0] */ 574 #define AT_PHENT 4 /* sizeof(phdr[0]) */ 575 #define AT_PHNUM 5 /* # phdr entries */ 576 #define AT_PAGESZ 6 /* PAGESIZE */ 577 #define AT_BASE 7 /* Interpreter base addr */ 578 #define AT_FLAGS 8 /* Processor flags */ 579 #define AT_ENTRY 9 /* Entry address of executable */ 580 #define AT_DCACHEBSIZE 10 /* Data cache block size */ 581 #define AT_ICACHEBSIZE 11 /* Instruction cache block size */ 582 #define AT_UCACHEBSIZE 12 /* Unified cache block size */ 583 584 /* Vendor specific */ 585 #define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */ 586 587 #define AT_EUID 2000 /* euid (solaris compatible numbers) */ 588 #define AT_RUID 2001 /* ruid (solaris compatible numbers) */ 589 #define AT_EGID 2002 /* egid (solaris compatible numbers) */ 590 #define AT_RGID 2003 /* rgid (solaris compatible numbers) */ 591 592 /* Solaris kernel specific */ 593 #define AT_SUN_LDELF 2004 /* dynamic linker's ELF header */ 594 #define AT_SUN_LDSHDR 2005 /* dynamic linker's section header */ 595 #define AT_SUN_LDNAME 2006 /* dynamic linker's name */ 596 #define AT_SUN_LPGSIZE 2007 /* large pagesize */ 597 598 /* Other information */ 599 #define AT_SUN_PLATFORM 2008 /* sysinfo(SI_PLATFORM) */ 600 #define AT_SUN_HWCAP 2009 /* process hardware capabilities */ 601 #define AT_SUN_IFLUSH 2010 /* do we need to flush the instruction cache? */ 602 #define AT_SUN_CPU 2011 /* CPU name */ 603 /* ibcs2 emulation band aid */ 604 #define AT_SUN_EMUL_ENTRY 2012 /* coff entry point */ 605 #define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */ 606 /* Executable's fully resolved name */ 607 #define AT_SUN_EXECNAME 2014 608 609 /* 610 * Note Headers 611 */ 612 typedef struct { 613 Elf32_Word n_namesz; 614 Elf32_Word n_descsz; 615 Elf32_Word n_type; 616 } Elf32_Nhdr; 617 618 typedef struct { 619 Elf64_Word n_namesz; 620 Elf64_Word n_descsz; 621 Elf64_Word n_type; 622 } Elf64_Nhdr; 623 624 #define ELF_NOTE_TYPE_ABI_TAG 1 625 626 /* GNU-specific note name and description sizes */ 627 #define ELF_NOTE_ABI_NAMESZ 4 628 #define ELF_NOTE_ABI_DESCSZ 16 629 /* GNU-specific note name */ 630 #define ELF_NOTE_ABI_NAME "GNU\0" 631 632 /* GNU-specific OS/version value stuff */ 633 #define ELF_NOTE_ABI_OS_LINUX 0 634 #define ELF_NOTE_ABI_OS_HURD 1 635 #define ELF_NOTE_ABI_OS_SOLARIS 2 636 637 /* NetBSD-specific note type: Emulation name. desc is emul name string. */ 638 #define ELF_NOTE_TYPE_NETBSD_TAG 1 639 640 /* NetBSD-specific note name and description sizes */ 641 #define ELF_NOTE_NETBSD_NAMESZ 7 642 #define ELF_NOTE_NETBSD_DESCSZ 4 643 /* NetBSD-specific note name */ 644 #define ELF_NOTE_NETBSD_NAME "NetBSD\0\0" 645 646 /* 647 * NetBSD-specific core file information. 648 * 649 * NetBSD ELF core files use notes to provide information about 650 * the process's state. The note name is "NetBSD-CORE" for 651 * information that is global to the process, and "NetBSD-CORE@nn", 652 * where "nn" is the lwpid of the LWP that the information belongs 653 * to (such as register state). 654 * 655 * We use the following note identifiers: 656 * 657 * ELF_NOTE_NETBSD_CORE_PROCINFO 658 * Note is a "netbsd_elfcore_procinfo" structure. 659 * 660 * We also use ptrace(2) request numbers (the ones that exist in 661 * machine-dependent space) to identify register info notes. The 662 * info in such notes is in the same format that ptrace(2) would 663 * export that information. 664 * 665 * Please try to keep the members of this structure nicely aligned, 666 * and if you add elements, add them to the end and bump the version. 667 */ 668 669 #define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE" 670 671 #define ELF_NOTE_NETBSD_CORE_PROCINFO 1 672 673 #define NETBSD_ELFCORE_PROCINFO_VERSION 1 674 675 struct netbsd_elfcore_procinfo { 676 /* Version 1 fields start here. */ 677 uint32_t cpi_version; /* netbsd_elfcore_procinfo version */ 678 uint32_t cpi_cpisize; /* sizeof(netbsd_elfcore_procinfo) */ 679 uint32_t cpi_signo; /* killing signal */ 680 uint32_t cpi_sigcode; /* signal code */ 681 uint32_t cpi_sigpend[4]; /* pending signals */ 682 uint32_t cpi_sigmask[4]; /* blocked signals */ 683 uint32_t cpi_sigignore[4];/* blocked signals */ 684 uint32_t cpi_sigcatch[4];/* blocked signals */ 685 int32_t cpi_pid; /* process ID */ 686 int32_t cpi_ppid; /* parent process ID */ 687 int32_t cpi_pgrp; /* process group ID */ 688 int32_t cpi_sid; /* session ID */ 689 uint32_t cpi_ruid; /* real user ID */ 690 uint32_t cpi_euid; /* effective user ID */ 691 uint32_t cpi_svuid; /* saved user ID */ 692 uint32_t cpi_rgid; /* real group ID */ 693 uint32_t cpi_egid; /* effective group ID */ 694 uint32_t cpi_svgid; /* saved group ID */ 695 uint32_t cpi_nlwps; /* number of LWPs */ 696 int8_t cpi_name[32]; /* copy of p->p_comm */ 697 /* Add version 2 fields below here. */ 698 int32_t cpi_siglwp; /* LWP target of killing signal */ 699 }; 700 701 #if defined(ELFSIZE) 702 #define CONCAT(x,y) __CONCAT(x,y) 703 #define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x))) 704 #define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y)))) 705 #define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE)) 706 #define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x))) 707 #endif 708 709 #if defined(ELFSIZE) && (ELFSIZE == 32) 710 #define Elf_Ehdr Elf32_Ehdr 711 #define Elf_Phdr Elf32_Phdr 712 #define Elf_Shdr Elf32_Shdr 713 #define Elf_Sym Elf32_Sym 714 #define Elf_Rel Elf32_Rel 715 #define Elf_Rela Elf32_Rela 716 #define Elf_Dyn Elf32_Dyn 717 #define Elf_Word Elf32_Word 718 #define Elf_Sword Elf32_Sword 719 #define Elf_Addr Elf32_Addr 720 #define Elf_Off Elf32_Off 721 #define Elf_Nhdr Elf32_Nhdr 722 723 #define ELF_R_SYM ELF32_R_SYM 724 #define ELF_R_TYPE ELF32_R_TYPE 725 #define ELFCLASS ELFCLASS32 726 727 #define ELF_ST_BIND ELF32_ST_BIND 728 #define ELF_ST_TYPE ELF32_ST_TYPE 729 #define ELF_ST_INFO ELF32_ST_INFO 730 731 #define AuxInfo Aux32Info 732 #elif defined(ELFSIZE) && (ELFSIZE == 64) 733 #define Elf_Ehdr Elf64_Ehdr 734 #define Elf_Phdr Elf64_Phdr 735 #define Elf_Shdr Elf64_Shdr 736 #define Elf_Sym Elf64_Sym 737 #define Elf_Rel Elf64_Rel 738 #define Elf_Rela Elf64_Rela 739 #define Elf_Dyn Elf64_Dyn 740 #define Elf_Word Elf64_Word 741 #define Elf_Sword Elf64_Sword 742 #define Elf_Addr Elf64_Addr 743 #define Elf_Off Elf64_Off 744 #define Elf_Nhdr Elf64_Nhdr 745 746 #define ELF_R_SYM ELF64_R_SYM 747 #define ELF_R_TYPE ELF64_R_TYPE 748 #define ELFCLASS ELFCLASS64 749 750 #define ELF_ST_BIND ELF64_ST_BIND 751 #define ELF_ST_TYPE ELF64_ST_TYPE 752 #define ELF_ST_INFO ELF64_ST_INFO 753 754 #define AuxInfo Aux64Info 755 #endif 756 757 #ifdef _KERNEL 758 759 #define ELF_AUX_ENTRIES 12 /* Size of aux array passed to loader */ 760 #define ELF32_NO_ADDR (~(Elf32_Addr)0) /* Indicates addr. not yet filled in */ 761 #define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */ 762 #define ELF64_NO_ADDR (~(Elf64_Addr)0) /* Indicates addr. not yet filled in */ 763 #define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */ 764 765 #if defined(ELFSIZE) && (ELFSIZE == 64) 766 #define ELF_NO_ADDR ELF64_NO_ADDR 767 #define ELF_LINK_ADDR ELF64_LINK_ADDR 768 #elif defined(ELFSIZE) && (ELFSIZE == 32) 769 #define ELF_NO_ADDR ELF32_NO_ADDR 770 #define ELF_LINK_ADDR ELF32_LINK_ADDR 771 #endif 772 773 #ifndef ELF32_EHDR_FLAGS_OK 774 #define ELF32_EHDR_FLAGS_OK(eh) 1 775 #endif 776 777 #ifndef ELF64_EHDR_FLAGS_OK 778 #define ELF64_EHDR_FLAGS_OK(eh) 1 779 #endif 780 781 #if defined(ELFSIZE) && (ELFSIZE == 64) 782 #define ELF_EHDR_FLAGS_OK(eh) ELF64_EHDR_FLAGS_OK(eh) 783 #else 784 #define ELF_EHDR_FLAGS_OK(eh) ELF32_EHDR_FLAGS_OK(eh) 785 #endif 786 787 #if defined(ELFSIZE) 788 struct elf_args { 789 Elf_Addr arg_entry; /* program entry point */ 790 Elf_Addr arg_interp; /* Interpreter load address */ 791 Elf_Addr arg_phaddr; /* program header address */ 792 Elf_Addr arg_phentsize; /* Size of program header */ 793 Elf_Addr arg_phnum; /* Number of program headers */ 794 }; 795 #endif 796 797 #ifndef _LKM 798 #include "opt_execfmt.h" 799 #endif 800 801 #ifdef EXEC_ELF32 802 int exec_elf32_makecmds(struct proc *, struct exec_package *); 803 int elf32_copyargs(struct proc *, struct exec_package *, 804 struct ps_strings *, char **, void *); 805 806 int coredump_elf32(struct lwp *, struct vnode *, struct ucred *); 807 int coredump_writenote_elf32(struct proc *, struct vnode *, 808 struct ucred *, off_t, Elf32_Nhdr *, const char *, void *); 809 810 int elf32_check_header(Elf32_Ehdr *, int); 811 #endif 812 813 #ifdef EXEC_ELF64 814 int exec_elf64_makecmds(struct proc *, struct exec_package *); 815 int elf64_read_from(struct proc *, struct vnode *, u_long, caddr_t, int); 816 int elf64_copyargs(struct proc *, struct exec_package *, 817 struct ps_strings *, char **, void *); 818 819 int coredump_elf64 __P((struct lwp *, struct vnode *, struct ucred *)); 820 int coredump_writenote_elf64 __P((struct proc *, struct vnode *, 821 struct ucred *, off_t, Elf64_Nhdr *, const char *, void *)); 822 823 int elf64_check_header(Elf64_Ehdr *, int); 824 #endif 825 826 #endif /* _KERNEL */ 827 828 #endif /* !_SYS_EXEC_ELF_H_ */ 829