1 /* $NetBSD: exec_elf.h,v 1.149 2015/07/30 15:28:18 maxv 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 #ifdef _BSD_SIZE_T_ 50 typedef _BSD_SIZE_T_ size_t; 51 #undef _BSD_SIZE_T_ 52 #endif 53 54 #if HAVE_NBTOOL_CONFIG_H 55 #include <nbinclude/machine/elf_machdep.h> 56 #else 57 #include <machine/elf_machdep.h> 58 #endif 59 60 typedef uint8_t Elf_Byte; 61 62 typedef uint32_t Elf32_Addr; 63 #define ELF32_FSZ_ADDR 4 64 typedef uint32_t Elf32_Off; 65 typedef int32_t Elf32_SOff; 66 #define ELF32_FSZ_OFF 4 67 typedef int32_t Elf32_Sword; 68 #define ELF32_FSZ_SWORD 4 69 typedef uint32_t Elf32_Word; 70 #define ELF32_FSZ_WORD 4 71 typedef uint16_t Elf32_Half; 72 #define ELF32_FSZ_HALF 2 73 typedef uint64_t Elf32_Lword; 74 #define ELF32_FSZ_LWORD 8 75 76 typedef uint64_t Elf64_Addr; 77 #define ELF64_FSZ_ADDR 8 78 typedef uint64_t Elf64_Off; 79 typedef int64_t Elf64_SOff; 80 #define ELF64_FSZ_OFF 8 81 82 typedef int32_t Elf64_Sword; 83 #define ELF64_FSZ_SWORD 4 84 typedef uint32_t Elf64_Word; 85 #define ELF64_FSZ_WORD 4 86 87 typedef int64_t Elf64_Sxword; 88 #define ELF64_FSZ_SXWORD 8 89 typedef uint64_t Elf64_Xword; 90 #define ELF64_FSZ_XWORD 8 91 typedef uint64_t Elf64_Lword; 92 #define ELF64_FSZ_LWORD 8 93 typedef uint16_t Elf64_Half; 94 #define ELF64_FSZ_HALF 2 95 96 /* 97 * ELF Header 98 */ 99 #define ELF_NIDENT 16 100 101 typedef struct { 102 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ 103 Elf32_Half e_type; /* file type */ 104 Elf32_Half e_machine; /* machine type */ 105 Elf32_Word e_version; /* version number */ 106 Elf32_Addr e_entry; /* entry point */ 107 Elf32_Off e_phoff; /* Program hdr offset */ 108 Elf32_Off e_shoff; /* Section hdr offset */ 109 Elf32_Word e_flags; /* Processor flags */ 110 Elf32_Half e_ehsize; /* sizeof ehdr */ 111 Elf32_Half e_phentsize; /* Program header entry size */ 112 Elf32_Half e_phnum; /* Number of program headers */ 113 Elf32_Half e_shentsize; /* Section header entry size */ 114 Elf32_Half e_shnum; /* Number of section headers */ 115 Elf32_Half e_shstrndx; /* String table index */ 116 } Elf32_Ehdr; 117 118 typedef struct { 119 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ 120 Elf64_Half e_type; /* file type */ 121 Elf64_Half e_machine; /* machine type */ 122 Elf64_Word e_version; /* version number */ 123 Elf64_Addr e_entry; /* entry point */ 124 Elf64_Off e_phoff; /* Program hdr offset */ 125 Elf64_Off e_shoff; /* Section hdr offset */ 126 Elf64_Word e_flags; /* Processor flags */ 127 Elf64_Half e_ehsize; /* sizeof ehdr */ 128 Elf64_Half e_phentsize; /* Program header entry size */ 129 Elf64_Half e_phnum; /* Number of program headers */ 130 Elf64_Half e_shentsize; /* Section header entry size */ 131 Elf64_Half e_shnum; /* Number of section headers */ 132 Elf64_Half e_shstrndx; /* String table index */ 133 } Elf64_Ehdr; 134 135 /* e_ident offsets */ 136 #define EI_MAG0 0 /* '\177' */ 137 #define EI_MAG1 1 /* 'E' */ 138 #define EI_MAG2 2 /* 'L' */ 139 #define EI_MAG3 3 /* 'F' */ 140 #define EI_CLASS 4 /* File class */ 141 #define EI_DATA 5 /* Data encoding */ 142 #define EI_VERSION 6 /* File version */ 143 #define EI_OSABI 7 /* Operating system/ABI identification */ 144 #define EI_ABIVERSION 8 /* ABI version */ 145 #define EI_PAD 9 /* Start of padding bytes up to EI_NIDENT*/ 146 #define EI_NIDENT 16 /* First non-ident header byte */ 147 148 /* e_ident[EI_MAG0,EI_MAG3] */ 149 #define ELFMAG0 0x7f 150 #define ELFMAG1 'E' 151 #define ELFMAG2 'L' 152 #define ELFMAG3 'F' 153 #define ELFMAG "\177ELF" 154 #define SELFMAG 4 155 156 /* e_ident[EI_CLASS] */ 157 #define ELFCLASSNONE 0 /* Invalid class */ 158 #define ELFCLASS32 1 /* 32-bit objects */ 159 #define ELFCLASS64 2 /* 64-bit objects */ 160 #define ELFCLASSNUM 3 161 162 /* e_ident[EI_DATA] */ 163 #define ELFDATANONE 0 /* Invalid data encoding */ 164 #define ELFDATA2LSB 1 /* 2's complement values, LSB first */ 165 #define ELFDATA2MSB 2 /* 2's complement values, MSB first */ 166 167 /* e_ident[EI_VERSION] */ 168 #define EV_NONE 0 /* Invalid version */ 169 #define EV_CURRENT 1 /* Current version */ 170 #define EV_NUM 2 171 172 /* e_ident[EI_OSABI] */ 173 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ 174 #define ELFOSABI_HPUX 1 /* HP-UX operating system */ 175 #define ELFOSABI_NETBSD 2 /* NetBSD */ 176 #define ELFOSABI_LINUX 3 /* GNU/Linux */ 177 #define ELFOSABI_HURD 4 /* GNU/Hurd */ 178 #define ELFOSABI_86OPEN 5 /* 86Open */ 179 #define ELFOSABI_SOLARIS 6 /* Solaris */ 180 #define ELFOSABI_MONTEREY 7 /* Monterey */ 181 #define ELFOSABI_IRIX 8 /* IRIX */ 182 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 183 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */ 184 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 185 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 186 #define ELFOSABI_OPENVMS 13 /* OpenVMS */ 187 #define ELFOSABI_NSK 14 /* HP Non-Stop Kernel */ 188 #define ELFOSABI_AROS 15 /* Amiga Research OS */ 189 /* Unofficial OSABIs follow */ 190 #define ELFOSABI_ARM 97 /* ARM */ 191 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ 192 193 #define ELFOSABI_NONE ELFOSABI_SYSV 194 #define ELFOSABI_AIX ELFOSABI_MONTEREY 195 196 /* e_type */ 197 #define ET_NONE 0 /* No file type */ 198 #define ET_REL 1 /* Relocatable file */ 199 #define ET_EXEC 2 /* Executable file */ 200 #define ET_DYN 3 /* Shared object file */ 201 #define ET_CORE 4 /* Core file */ 202 #define ET_NUM 5 203 204 #define ET_LOOS 0xfe00 /* Operating system specific range */ 205 #define ET_HIOS 0xfeff 206 #define ET_LOPROC 0xff00 /* Processor-specific range */ 207 #define ET_HIPROC 0xffff 208 209 /* e_machine */ 210 #define EM_NONE 0 /* No machine */ 211 #define EM_M32 1 /* AT&T WE 32100 */ 212 #define EM_SPARC 2 /* SPARC */ 213 #define EM_386 3 /* Intel 80386 */ 214 #define EM_68K 4 /* Motorola 68000 */ 215 #define EM_88K 5 /* Motorola 88000 */ 216 #define EM_486 6 /* Intel 80486 */ 217 #define EM_860 7 /* Intel 80860 */ 218 #define EM_MIPS 8 /* MIPS I Architecture */ 219 #define EM_S370 9 /* Amdahl UTS on System/370 */ 220 #define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */ 221 /* 11-14 - Reserved */ 222 #define EM_RS6000 11 /* IBM RS/6000 XXX reserved */ 223 #define EM_PARISC 15 /* Hewlett-Packard PA-RISC */ 224 #define EM_NCUBE 16 /* NCube XXX reserved */ 225 #define EM_VPP500 17 /* Fujitsu VPP500 */ 226 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 227 #define EM_960 19 /* Intel 80960 */ 228 #define EM_PPC 20 /* PowerPC */ 229 #define EM_PPC64 21 /* 64-bit PowerPC */ 230 /* 22-35 - Reserved */ 231 #define EM_S390 22 /* System/390 XXX reserved */ 232 #define EM_V800 36 /* NEC V800 */ 233 #define EM_FR20 37 /* Fujitsu FR20 */ 234 #define EM_RH32 38 /* TRW RH-32 */ 235 #define EM_RCE 39 /* Motorola RCE */ 236 #define EM_ARM 40 /* Advanced RISC Machines ARM */ 237 #define EM_ALPHA 41 /* DIGITAL Alpha */ 238 #define EM_SH 42 /* Hitachi Super-H */ 239 #define EM_SPARCV9 43 /* SPARC Version 9 */ 240 #define EM_TRICORE 44 /* Siemens Tricore */ 241 #define EM_ARC 45 /* Argonaut RISC Core */ 242 #define EM_H8_300 46 /* Hitachi H8/300 */ 243 #define EM_H8_300H 47 /* Hitachi H8/300H */ 244 #define EM_H8S 48 /* Hitachi H8S */ 245 #define EM_H8_500 49 /* Hitachi H8/500 */ 246 #define EM_IA_64 50 /* Intel Merced Processor */ 247 #define EM_MIPS_X 51 /* Stanford MIPS-X */ 248 #define EM_COLDFIRE 52 /* Motorola Coldfire */ 249 #define EM_68HC12 53 /* Motorola MC68HC12 */ 250 #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator */ 251 #define EM_PCP 55 /* Siemens PCP */ 252 #define EM_NCPU 56 /* Sony nCPU embedded RISC processor */ 253 #define EM_NDR1 57 /* Denso NDR1 microprocessor */ 254 #define EM_STARCORE 58 /* Motorola Star*Core processor */ 255 #define EM_ME16 59 /* Toyota ME16 processor */ 256 #define EM_ST100 60 /* STMicroelectronics ST100 processor */ 257 #define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded family processor */ 258 #define EM_X86_64 62 /* AMD x86-64 architecture */ 259 #define EM_PDSP 63 /* Sony DSP Processor */ 260 #define EM_PDP10 64 /* Digital Equipment Corp. PDP-10 */ 261 #define EM_PDP11 65 /* Digital Equipment Corp. PDP-11 */ 262 #define EM_FX66 66 /* Siemens FX66 microcontroller */ 263 #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */ 264 #define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */ 265 #define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */ 266 #define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */ 267 #define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */ 268 #define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */ 269 #define EM_SVX 73 /* Silicon Graphics SVx */ 270 #define EM_ST19 74 /* STMicroelectronics ST19 8-bit CPU */ 271 #define EM_VAX 75 /* Digital VAX */ 272 #define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */ 273 #define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */ 274 #define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */ 275 #define EM_ZSP 79 /* LSI Logic's 16-bit DSP processor */ 276 #define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */ 277 #define EM_HUANY 81 /* Harvard's machine-independent format */ 278 #define EM_PRISM 82 /* SiTera Prism */ 279 #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ 280 #define EM_FR30 84 /* Fujitsu FR30 */ 281 #define EM_D10V 85 /* Mitsubishi D10V */ 282 #define EM_D30V 86 /* Mitsubishi D30V */ 283 #define EM_V850 87 /* NEC v850 */ 284 #define EM_M32R 88 /* Mitsubishi M32R */ 285 #define EM_MN10300 89 /* Matsushita MN10300 */ 286 #define EM_MN10200 90 /* Matsushita MN10200 */ 287 #define EM_PJ 91 /* picoJava */ 288 #define EM_OR1K 92 /* OpenRISC 32-bit embedded processor */ 289 #define EM_OPENRISC EM_OR1K 290 #define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */ 291 #define EM_XTENSA 94 /* Tensilica Xtensa Architecture */ 292 #define EM_VIDEOCORE 95 /* Alphamosaic VideoCore processor */ 293 #define EM_TMM_GPP 96 /* Thompson Multimedia General Purpose Processor */ 294 #define EM_NS32K 97 /* National Semiconductor 32000 series */ 295 #define EM_TPC 98 /* Tenor Network TPC processor */ 296 #define EM_SNP1K 99 /* Trebia SNP 1000 processor */ 297 #define EM_ST200 100 /* STMicroelectronics ST200 microcontroller */ 298 #define EM_IP2K 101 /* Ubicom IP2xxx microcontroller family */ 299 #define EM_MAX 102 /* MAX processor */ 300 #define EM_CR 103 /* National Semiconductor CompactRISC micorprocessor */ 301 #define EM_F2MC16 104 /* Fujitsu F2MC16 */ 302 #define EM_MSP430 105 /* Texas Instruments MSP430 */ 303 #define EM_BLACKFIN 106 /* Analog Devices Blackfin DSP */ 304 #define EM_SE_C33 107 /* Seiko Epson S1C33 family */ 305 #define EM_SEP 108 /* Sharp embedded microprocessor */ 306 #define EM_ARCA 109 /* Arca RISC microprocessor */ 307 #define EM_UNICORE 110 /* UNICORE from PKU-Unity Ltd. and MPRC Peking University */ 308 #define EM_ALTERA_NIOS2 113 /* Altera Nios II soft-core processor */ 309 #define EM_AARCH64 183 /* AArch64 64-bit ARM microprocessor */ 310 #define EM_AVR32 185 /* Atmel Corporation 32-bit microprocessor family*/ 311 #define EM_TILE64 187 /* Tilera TILE64 multicore architecture family */ 312 #define EM_TILEPRO 188 /* Tilera TILEPro multicore architecture family */ 313 #define EM_MICROBLAZE 189 /* Xilinx MicroBlaze 32-bit RISC soft processor core */ 314 #define EM_TILEGX 192 /* Tilera TILE-GX multicore architecture family */ 315 #define EM_Z80 220 /* Zilog Z80 */ 316 #define EM_RISCV 243 /* RISC-V */ 317 318 /* Unofficial machine types follow */ 319 #define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */ 320 #define EM_NUM 36903 321 322 /* 323 * Program Header 324 */ 325 typedef struct { 326 Elf32_Word p_type; /* entry type */ 327 Elf32_Off p_offset; /* offset */ 328 Elf32_Addr p_vaddr; /* virtual address */ 329 Elf32_Addr p_paddr; /* physical address */ 330 Elf32_Word p_filesz; /* file size */ 331 Elf32_Word p_memsz; /* memory size */ 332 Elf32_Word p_flags; /* flags */ 333 Elf32_Word p_align; /* memory & file alignment */ 334 } Elf32_Phdr; 335 336 typedef struct { 337 Elf64_Word p_type; /* entry type */ 338 Elf64_Word p_flags; /* flags */ 339 Elf64_Off p_offset; /* offset */ 340 Elf64_Addr p_vaddr; /* virtual address */ 341 Elf64_Addr p_paddr; /* physical address */ 342 Elf64_Xword p_filesz; /* file size */ 343 Elf64_Xword p_memsz; /* memory size */ 344 Elf64_Xword p_align; /* memory & file alignment */ 345 } Elf64_Phdr; 346 347 /* p_type */ 348 #define PT_NULL 0 /* Program header table entry unused */ 349 #define PT_LOAD 1 /* Loadable program segment */ 350 #define PT_DYNAMIC 2 /* Dynamic linking information */ 351 #define PT_INTERP 3 /* Program interpreter */ 352 #define PT_NOTE 4 /* Auxiliary information */ 353 #define PT_SHLIB 5 /* Reserved, unspecified semantics */ 354 #define PT_PHDR 6 /* Entry for header table itself */ 355 #define PT_TLS 7 /* TLS initialisation image */ 356 #define PT_NUM 8 357 358 #define PT_LOOS 0x60000000 /* OS-specific range */ 359 360 /* GNU-specific */ 361 #define PT_GNU_EH_FRAME 0x6474e550 /* EH frame segment */ 362 #define PT_GNU_STACK 0x6474e551 /* Indicate executable stack */ 363 #define PT_GNU_RELRO 0x6474e552 /* Make read-only after relocation */ 364 365 #define PT_HIOS 0x6fffffff 366 #define PT_LOPROC 0x70000000 /* Processor-specific range */ 367 #define PT_HIPROC 0x7fffffff 368 369 #define PT_MIPS_REGINFO 0x70000000 370 371 /* p_flags */ 372 #define PF_R 0x4 /* Segment is readable */ 373 #define PF_W 0x2 /* Segment is writable */ 374 #define PF_X 0x1 /* Segment is executable */ 375 376 #define PF_MASKOS 0x0ff00000 /* Operating system specific values */ 377 #define PF_MASKPROC 0xf0000000 /* Processor-specific values */ 378 379 /* Extended program header index. */ 380 #define PN_XNUM 0xffff 381 382 /* 383 * Section Headers 384 */ 385 typedef struct { 386 Elf32_Word sh_name; /* section name (.shstrtab index) */ 387 Elf32_Word sh_type; /* section type */ 388 Elf32_Word sh_flags; /* section flags */ 389 Elf32_Addr sh_addr; /* virtual address */ 390 Elf32_Off sh_offset; /* file offset */ 391 Elf32_Word sh_size; /* section size */ 392 Elf32_Word sh_link; /* link to another */ 393 Elf32_Word sh_info; /* misc info */ 394 Elf32_Word sh_addralign; /* memory alignment */ 395 Elf32_Word sh_entsize; /* table entry size */ 396 } Elf32_Shdr; 397 398 typedef struct { 399 Elf64_Word sh_name; /* section name (.shstrtab index) */ 400 Elf64_Word sh_type; /* section type */ 401 Elf64_Xword sh_flags; /* section flags */ 402 Elf64_Addr sh_addr; /* virtual address */ 403 Elf64_Off sh_offset; /* file offset */ 404 Elf64_Xword sh_size; /* section size */ 405 Elf64_Word sh_link; /* link to another */ 406 Elf64_Word sh_info; /* misc info */ 407 Elf64_Xword sh_addralign; /* memory alignment */ 408 Elf64_Xword sh_entsize; /* table entry size */ 409 } Elf64_Shdr; 410 411 /* sh_type */ 412 #define SHT_NULL 0 /* Section header table entry unused */ 413 #define SHT_PROGBITS 1 /* Program information */ 414 #define SHT_SYMTAB 2 /* Symbol table */ 415 #define SHT_STRTAB 3 /* String table */ 416 #define SHT_RELA 4 /* Relocation information w/ addend */ 417 #define SHT_HASH 5 /* Symbol hash table */ 418 #define SHT_DYNAMIC 6 /* Dynamic linking information */ 419 #define SHT_NOTE 7 /* Auxiliary information */ 420 #define SHT_NOBITS 8 /* No space allocated in file image */ 421 #define SHT_REL 9 /* Relocation information w/o addend */ 422 #define SHT_SHLIB 10 /* Reserved, unspecified semantics */ 423 #define SHT_DYNSYM 11 /* Symbol table for dynamic linker */ 424 #define SHT_INIT_ARRAY 14 /* Initialization function pointers */ 425 #define SHT_FINI_ARRAY 15 /* Termination function pointers */ 426 #define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs */ 427 #define SHT_GROUP 17 /* Section group */ 428 #define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX) */ 429 #define SHT_NUM 19 430 431 #define SHT_LOOS 0x60000000 /* Operating system specific range */ 432 #define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* GNU incremental build data */ 433 #define SHT_LOSUNW 0x6ffffff4 434 #define SHT_SUNW_dof 0x6ffffff4 435 #define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* GNU object attributes */ 436 #define SHT_SUNW_cap 0x6ffffff5 437 #define SHT_SUNW_SIGNATURE 0x6ffffff6 438 #define SHT_GNU_HASH 0x6ffffff6 /* GNU style symbol hash table */ 439 #define SHT_GNU_LIBLIST 0x6ffffff7 /* GNU list of prelink dependencies */ 440 #define SHT_SUNW_move 0x6ffffffa 441 #define SHT_SUNW_COMDAT 0x6ffffffb 442 #define SHT_SUNW_syminfo 0x6ffffffc 443 #define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */ 444 #define SHT_GNU_verdef SHT_SUNW_verdef 445 #define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */ 446 #define SHT_GNU_verneed SHT_SUNW_verneed 447 #define SHT_SUNW_versym 0x6fffffff /* Symbol versions */ 448 #define SHT_GNU_versym SHT_SUNW_versym 449 #define SHT_HISUNW 0x6fffffff 450 #define SHT_HIOS 0x6fffffff 451 #define SHT_LOPROC 0x70000000 /* Processor-specific range */ 452 #define SHT_AMD64_UNWIND 0x70000001 /* unwind information */ 453 #define SHT_ARM_EXIDX 0x70000001 /* exception index table */ 454 #define SHT_ARM_PREEMPTMAP 0x70000002 /* BPABI DLL dynamic linking 455 * pre-emption map */ 456 #define SHT_ARM_ATTRIBUTES 0x70000003 /* Object file compatibility 457 * attributes */ 458 #define SHT_ARM_DEBUGOVERLAY 0x70000004 /* See DBGOVL for details */ 459 #define SHT_ARM_OVERLAYSECTION 0x70000005 460 #define SHT_MIPS_REGINFO 0x70000006 461 #define SHT_MIPS_OPTIONS 0x7000000d 462 #define SHT_MIPS_DWARF 0x7000001e /* MIPS gcc uses MIPS_DWARF */ 463 #define SHT_HIPROC 0x7fffffff 464 #define SHT_LOUSER 0x80000000 /* Application-specific range */ 465 #define SHT_HIUSER 0xffffffff 466 467 /* sh_flags */ 468 #define SHF_WRITE 0x00000001 /* Contains writable data */ 469 #define SHF_ALLOC 0x00000002 /* Occupies memory */ 470 #define SHF_EXECINSTR 0x00000004 /* Contains executable insns */ 471 #define SHF_MERGE 0x00000010 /* Might be merged */ 472 #define SHF_STRINGS 0x00000020 /* Contains nul terminated strings */ 473 #define SHF_INFO_LINK 0x00000040 /* "sh_info" contains SHT index */ 474 #define SHF_LINK_ORDER 0x00000080 /* Preserve order after combining */ 475 #define SHF_OS_NONCONFORMING 0x00000100 /* OS specific handling required */ 476 #define SHF_GROUP 0x00000200 /* Is member of a group */ 477 #define SHF_TLS 0x00000400 /* Holds thread-local data */ 478 #define SHF_MASKOS 0x0ff00000 /* Operating system specific values */ 479 #define SHF_MASKPROC 0xf0000000 /* Processor-specific values */ 480 #define SHF_ORDERED 0x40000000 /* Ordering requirement (Solaris) */ 481 #define SHF_EXCLUDE 0x80000000 /* Excluded unless unles ref/alloc 482 (Solaris).*/ 483 /* 484 * Symbol Table 485 */ 486 typedef struct { 487 Elf32_Word st_name; /* Symbol name (.strtab index) */ 488 Elf32_Word st_value; /* value of symbol */ 489 Elf32_Word st_size; /* size of symbol */ 490 Elf_Byte st_info; /* type / binding attrs */ 491 Elf_Byte st_other; /* unused */ 492 Elf32_Half st_shndx; /* section index of symbol */ 493 } Elf32_Sym; 494 495 typedef struct { 496 Elf64_Word st_name; /* Symbol name (.strtab index) */ 497 Elf_Byte st_info; /* type / binding attrs */ 498 Elf_Byte st_other; /* unused */ 499 Elf64_Half st_shndx; /* section index of symbol */ 500 Elf64_Addr st_value; /* value of symbol */ 501 Elf64_Xword st_size; /* size of symbol */ 502 } Elf64_Sym; 503 504 /* Symbol Table index of the undefined symbol */ 505 #define ELF_SYM_UNDEFINED 0 506 507 #define STN_UNDEF 0 /* undefined index */ 508 509 /* st_info: Symbol Bindings */ 510 #define STB_LOCAL 0 /* local symbol */ 511 #define STB_GLOBAL 1 /* global symbol */ 512 #define STB_WEAK 2 /* weakly defined global symbol */ 513 #define STB_NUM 3 514 515 #define STB_LOOS 10 /* Operating system specific range */ 516 #define STB_HIOS 12 517 #define STB_LOPROC 13 /* Processor-specific range */ 518 #define STB_HIPROC 15 519 520 /* st_info: Symbol Types */ 521 #define STT_NOTYPE 0 /* Type not specified */ 522 #define STT_OBJECT 1 /* Associated with a data object */ 523 #define STT_FUNC 2 /* Associated with a function */ 524 #define STT_SECTION 3 /* Associated with a section */ 525 #define STT_FILE 4 /* Associated with a file name */ 526 #define STT_COMMON 5 /* Uninitialised common block */ 527 #define STT_TLS 6 /* Thread local data object */ 528 #define STT_NUM 7 529 530 #define STT_LOOS 10 /* Operating system specific range */ 531 #define STT_GNU_IFUNC 10 /* GNU extension: indirect function */ 532 #define STT_HIOS 12 533 #define STT_LOPROC 13 /* Processor-specific range */ 534 #define STT_HIPROC 15 535 536 /* st_other: Visibility Types */ 537 #define STV_DEFAULT 0 /* use binding type */ 538 #define STV_INTERNAL 1 /* not referenced from outside */ 539 #define STV_HIDDEN 2 /* not visible, may be used via ptr */ 540 #define STV_PROTECTED 3 /* visible, not preemptible */ 541 #define STV_EXPORTED 4 542 #define STV_SINGLETON 5 543 #define STV_ELIMINATE 6 544 545 /* st_info/st_other utility macros */ 546 #define ELF_ST_BIND(info) ((uint32_t)(info) >> 4) 547 #define ELF_ST_TYPE(info) ((uint32_t)(info) & 0xf) 548 #define ELF_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | \ 549 ((type) & 0xf))) 550 #define ELF_ST_VISIBILITY(other) ((uint32_t)(other) & 3) 551 552 /* 553 * Special section indexes 554 */ 555 #define SHN_UNDEF 0 /* Undefined section */ 556 557 #define SHN_LORESERVE 0xff00 /* Reserved range */ 558 #define SHN_ABS 0xfff1 /* Absolute symbols */ 559 #define SHN_COMMON 0xfff2 /* Common symbols */ 560 #define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere */ 561 #define SHN_HIRESERVE 0xffff 562 563 #define SHN_LOPROC 0xff00 /* Processor-specific range */ 564 #define SHN_HIPROC 0xff1f 565 #define SHN_LOOS 0xff20 /* Operating system specific range */ 566 #define SHN_HIOS 0xff3f 567 568 #define SHN_MIPS_ACOMMON 0xff00 569 #define SHN_MIPS_TEXT 0xff01 570 #define SHN_MIPS_DATA 0xff02 571 #define SHN_MIPS_SCOMMON 0xff03 572 573 /* 574 * Relocation Entries 575 */ 576 typedef struct { 577 Elf32_Word r_offset; /* where to do it */ 578 Elf32_Word r_info; /* index & type of relocation */ 579 } Elf32_Rel; 580 581 typedef struct { 582 Elf32_Word r_offset; /* where to do it */ 583 Elf32_Word r_info; /* index & type of relocation */ 584 Elf32_Sword r_addend; /* adjustment value */ 585 } Elf32_Rela; 586 587 /* r_info utility macros */ 588 #define ELF32_R_SYM(info) ((info) >> 8) 589 #define ELF32_R_TYPE(info) ((info) & 0xff) 590 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 591 592 typedef struct { 593 Elf64_Addr r_offset; /* where to do it */ 594 Elf64_Xword r_info; /* index & type of relocation */ 595 } Elf64_Rel; 596 597 typedef struct { 598 Elf64_Addr r_offset; /* where to do it */ 599 Elf64_Xword r_info; /* index & type of relocation */ 600 Elf64_Sxword r_addend; /* adjustment value */ 601 } Elf64_Rela; 602 603 /* r_info utility macros */ 604 #define ELF64_R_SYM(info) ((info) >> 32) 605 #define ELF64_R_TYPE(info) ((info) & 0xffffffff) 606 #define ELF64_R_INFO(sym,type) (((sym) << 32) + (type)) 607 608 /* 609 * Move entries 610 */ 611 typedef struct { 612 Elf32_Lword m_value; /* symbol value */ 613 Elf32_Word m_info; /* size + index */ 614 Elf32_Word m_poffset; /* symbol offset */ 615 Elf32_Half m_repeat; /* repeat count */ 616 Elf32_Half m_stride; /* stride info */ 617 } Elf32_Move; 618 619 #define ELF32_M_SYM(info) ((info) >> 8) 620 #define ELF32_M_SIZE(info) ((info) & 0xff) 621 #define ELF32_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size)) 622 623 typedef struct { 624 Elf64_Lword m_value; /* symbol value */ 625 Elf64_Xword m_info; /* size + index */ 626 Elf64_Xword m_poffset; /* symbol offset */ 627 Elf64_Word m_repeat; /* repeat count */ 628 Elf64_Word m_stride; /* stride info */ 629 } Elf64_Move; 630 631 #define ELF64_M_SYM(info) ((info) >> 8) 632 #define ELF64_M_SIZE(info) ((info) & 0xff) 633 #define ELF64_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size)) 634 635 /* 636 * Hardware/software capabilities entry 637 */ 638 typedef struct { 639 Elf32_Word c_tag; /* entry tag value */ 640 union { 641 Elf32_Addr c_ptr; 642 Elf32_Word c_val; 643 } c_un; 644 } Elf32_Cap; 645 646 typedef struct { 647 Elf64_Xword c_tag; /* entry tag value */ 648 union { 649 Elf64_Addr c_ptr; 650 Elf64_Xword c_val; 651 } c_un; 652 } Elf64_Cap; 653 654 /* 655 * Dynamic Section structure array 656 */ 657 typedef struct { 658 Elf32_Word d_tag; /* entry tag value */ 659 union { 660 Elf32_Addr d_ptr; 661 Elf32_Word d_val; 662 } d_un; 663 } Elf32_Dyn; 664 665 typedef struct { 666 Elf64_Xword d_tag; /* entry tag value */ 667 union { 668 Elf64_Addr d_ptr; 669 Elf64_Xword d_val; 670 } d_un; 671 } Elf64_Dyn; 672 673 /* d_tag */ 674 #define DT_NULL 0 /* Marks end of dynamic array */ 675 #define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */ 676 #define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */ 677 #define DT_PLTGOT 3 /* Address of PLT and/or GOT */ 678 #define DT_HASH 4 /* Address of symbol hash table */ 679 #define DT_STRTAB 5 /* Address of string table */ 680 #define DT_SYMTAB 6 /* Address of symbol table */ 681 #define DT_RELA 7 /* Address of Rela relocation table */ 682 #define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */ 683 #define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */ 684 #define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */ 685 #define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */ 686 #define DT_INIT 12 /* Address of initialization function */ 687 #define DT_FINI 13 /* Address of termination function */ 688 #define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */ 689 #define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */ 690 #define DT_SYMBOLIC 16 /* Start symbol search within local object */ 691 #define DT_REL 17 /* Address of Rel relocation table */ 692 #define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */ 693 #define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */ 694 #define DT_PLTREL 20 /* Type of PLT relocation entries */ 695 #define DT_DEBUG 21 /* Used for debugging; unspecified */ 696 #define DT_TEXTREL 22 /* Relocations might modify non-writable seg */ 697 #define DT_JMPREL 23 /* Address of relocations associated with PLT */ 698 #define DT_BIND_NOW 24 /* Process all relocations at load-time */ 699 #define DT_INIT_ARRAY 25 /* Address of initialization function array */ 700 #define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */ 701 #define DT_INIT_ARRAYSZ 27 /* Address of termination function array */ 702 #define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/ 703 #define DT_RUNPATH 29 /* overrides DT_RPATH */ 704 #define DT_FLAGS 30 /* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */ 705 #define DT_ENCODING 31 /* ??? */ 706 #define DT_PREINIT_ARRAY 32 /* Address of pre-init function array */ 707 #define DT_PREINIT_ARRAYSZ 33 /* Size, in bytes, of DT_PREINIT_ARRAY array */ 708 #define DT_NUM 34 709 710 #define DT_LOOS 0x60000000 /* Operating system specific range */ 711 #define DT_VERSYM 0x6ffffff0 /* Symbol versions */ 712 #define DT_FLAGS_1 0x6ffffffb /* ELF dynamic flags */ 713 #define DT_VERDEF 0x6ffffffc /* Versions defined by file */ 714 #define DT_VERDEFNUM 0x6ffffffd /* Number of versions defined by file */ 715 #define DT_VERNEED 0x6ffffffe /* Versions needed by file */ 716 #define DT_VERNEEDNUM 0x6fffffff /* Number of versions needed by file */ 717 #define DT_HIOS 0x6fffffff 718 #define DT_LOPROC 0x70000000 /* Processor-specific range */ 719 #define DT_HIPROC 0x7fffffff 720 721 /* Flag values for DT_FLAGS */ 722 #define DF_ORIGIN 0x00000001 /* uses $ORIGIN */ 723 #define DF_SYMBOLIC 0x00000002 /* */ 724 #define DF_TEXTREL 0x00000004 /* */ 725 #define DF_BIND_NOW 0x00000008 /* */ 726 #define DF_STATIC_TLS 0x00000010 /* */ 727 728 /* Flag values for DT_FLAGS_1 (incomplete) */ 729 #define DF_1_BIND_NOW 0x00000001 /* Same as DF_BIND_NOW */ 730 #define DF_1_NODELETE 0x00000008 /* Set the RTLD_NODELETE for object */ 731 #define DF_1_INITFIRST 0x00000020 /* Object's init/fini take priority */ 732 #define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */ 733 734 /* 735 * Auxiliary Vectors 736 */ 737 typedef struct { 738 Elf32_Word a_type; /* 32-bit id */ 739 Elf32_Word a_v; /* 32-bit id */ 740 } Aux32Info; 741 742 typedef struct { 743 Elf64_Word a_type; /* 32-bit id */ 744 Elf64_Xword a_v; /* 64-bit id */ 745 } Aux64Info; 746 747 /* a_type */ 748 #define AT_NULL 0 /* Marks end of array */ 749 #define AT_IGNORE 1 /* No meaning, a_un is undefined */ 750 #define AT_EXECFD 2 /* Open file descriptor of object file */ 751 #define AT_PHDR 3 /* &phdr[0] */ 752 #define AT_PHENT 4 /* sizeof(phdr[0]) */ 753 #define AT_PHNUM 5 /* # phdr entries */ 754 #define AT_PAGESZ 6 /* PAGESIZE */ 755 #define AT_BASE 7 /* Interpreter base addr */ 756 #define AT_FLAGS 8 /* Processor flags */ 757 #define AT_ENTRY 9 /* Entry address of executable */ 758 #define AT_DCACHEBSIZE 10 /* Data cache block size */ 759 #define AT_ICACHEBSIZE 11 /* Instruction cache block size */ 760 #define AT_UCACHEBSIZE 12 /* Unified cache block size */ 761 #define AT_STACKBASE 13 /* Base address of the main thread */ 762 763 /* Vendor specific */ 764 #define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */ 765 766 #define AT_EUID 2000 /* euid (solaris compatible numbers) */ 767 #define AT_RUID 2001 /* ruid (solaris compatible numbers) */ 768 #define AT_EGID 2002 /* egid (solaris compatible numbers) */ 769 #define AT_RGID 2003 /* rgid (solaris compatible numbers) */ 770 771 /* Solaris kernel specific */ 772 #define AT_SUN_LDELF 2004 /* dynamic linker's ELF header */ 773 #define AT_SUN_LDSHDR 2005 /* dynamic linker's section header */ 774 #define AT_SUN_LDNAME 2006 /* dynamic linker's name */ 775 #define AT_SUN_LPGSIZE 2007 /* large pagesize */ 776 777 /* Other information */ 778 #define AT_SUN_PLATFORM 2008 /* sysinfo(SI_PLATFORM) */ 779 #define AT_SUN_HWCAP 2009 /* process hardware capabilities */ 780 #define AT_SUN_IFLUSH 2010 /* do we need to flush the instruction cache? */ 781 #define AT_SUN_CPU 2011 /* CPU name */ 782 /* ibcs2 emulation band aid */ 783 #define AT_SUN_EMUL_ENTRY 2012 /* coff entry point */ 784 #define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */ 785 /* Executable's fully resolved name */ 786 #define AT_SUN_EXECNAME 2014 787 788 /* 789 * The header for GNU-style hash sections. 790 */ 791 typedef struct { 792 uint32_t gh_nbuckets; /* Number of hash buckets. */ 793 uint32_t gh_symndx; /* First visible symbol in .dynsym. */ 794 uint32_t gh_maskwords; /* #maskwords used in bloom filter. */ 795 uint32_t gh_shift2; /* Bloom filter shift count. */ 796 } Elf_GNU_Hash_Header; 797 798 /* 799 * Note Headers 800 */ 801 typedef struct { 802 Elf32_Word n_namesz; 803 Elf32_Word n_descsz; 804 Elf32_Word n_type; 805 } Elf32_Nhdr; 806 807 typedef struct { 808 Elf64_Word n_namesz; 809 Elf64_Word n_descsz; 810 Elf64_Word n_type; 811 } Elf64_Nhdr; 812 813 #define ELF_NOTE_GNU_NAMESZ 4 814 #define ELF_NOTE_GNU_NAME "GNU\0" 815 816 /* 817 * GNU-specific note type: ABI tag 818 * name: GNU\0 819 * namesz: 4 820 * desc: 821 * word[0]: OS tag 822 * word[1]: major version 823 * word[2]: minor version 824 * word[3]: teeny version 825 * descsz: 16 826 */ 827 /* GNU-specific note name and description sizes */ 828 #define ELF_NOTE_TYPE_ABI_TAG 1 829 #define ELF_NOTE_ABI_NAME ELF_NOTE_GNU_NAME 830 #define ELF_NOTE_ABI_NAMESZ ELF_NOTE_GNU_NAMESZ 831 #define ELF_NOTE_ABI_DESCSZ 16 832 /* GNU-specific OS/version value stuff */ 833 #define ELF_NOTE_ABI_OS_LINUX 0 834 #define ELF_NOTE_ABI_OS_HURD 1 835 #define ELF_NOTE_ABI_OS_SOLARIS 2 836 #define ELF_NOTE_ABI_OS_KFREEBSD 3 837 #define ELF_NOTE_ABI_OS_KNETBSD 4 838 839 /* 840 * GNU-specific note type: Hardware capabilities 841 * name: GNU\0 842 * namesz: 4 843 * desc: 844 * word[0]: Number of entries 845 * word[1]: Bitmask of enabled entries 846 * Followed by a byte id, and a NUL terminated string per entry 847 * descsz: variable 848 */ 849 #define ELF_NOTE_TYPE_GNU_HWCAP 2 850 851 /* 852 * GNU-specific note type: Build ID generated by ld 853 * name: GNU\0 854 * desc: 855 * word[0..4] SHA1 [default] 856 * or 857 * word[0..3] md5 or uuid 858 * descsz: 16 or 20 859 */ 860 #define ELF_NOTE_TYPE_GNU_BUILD_ID 3 861 862 /* SuSE-specific note type: ABI 863 * name: SuSE\0 864 * namesz: 5 865 * desc: 866 * half[0] = MMmm 867 * 868 * M = product major version 869 * m = product minor version 870 * descsz: 2 871 */ 872 #define ELF_NOTE_TYPE_SUSE_TAG 1 873 /* SuSE-specific note name and description sizes */ 874 #define ELF_NOTE_SUSE_NAMESZ 5 875 #define ELF_NOTE_SUSE_DESCSZ 2 876 /* SuSE-specific note name */ 877 #define ELF_NOTE_SUSE_NAME "SuSE\0" 878 879 /* SuSE-specific note type: version 880 * name: SuSE\0\0\0\0 881 * namesz: 8 882 * desc: 883 * word[0] = VVTTMMmm 884 * 885 * V = version of following data 886 * T = product type: [box, sles, nld, whatever] 887 * M = product major version 888 * m = product minor version 889 * descsz: 8 890 */ 891 #define ELF_NOTE_TYPE_SUSE_VERSION_TAG 0x45537553 /* SuSE in LE */ 892 /* SuSE-specific note name and description sizes */ 893 #define ELF_NOTE_SUSE_VERSION_NAMESZ 8 894 #define ELF_NOTE_SUSE_VERSION_DESCSZ 8 895 /* SuSE-specific note name */ 896 #define ELF_NOTE_SUSE_VERSION_NAME "SuSE\0\0\0\0" 897 898 /* NetBSD-specific note type: Emulation name. 899 * name: NetBSD\0\0 900 * namesz: 8 901 * desc: 902 * word[0]: MMmmrrpp00 903 * 904 * M = major version 905 * m = minor version 906 * r = release ["",A-Z,Z[A-Z] but numeric] 907 * p = patchlevel 908 * descsz: 4 909 */ 910 #define ELF_NOTE_TYPE_NETBSD_TAG 1 911 #if defined(__minix) 912 /* NetBSD-specific note name and description sizes */ 913 #define ELF_NOTE_NETBSD_NAMESZ 7 914 #define ELF_NOTE_NETBSD_DESCSZ 4 915 /* NetBSD-specific note name */ 916 #define ELF_NOTE_NETBSD_NAME "NetBSD\0\0" 917 #else 918 /* MINIX3-specific note name and description sizes */ 919 #define ELF_NOTE_NETBSD_NAMESZ 6 920 #define ELF_NOTE_NETBSD_DESCSZ 4 921 #define ELF_NOTE_NETBSD_NAME "Minix\0\0\0" 922 #endif /* defined(__minix) */ 923 924 /* NetBSD-specific note type: Checksum. 925 * There should be 1 NOTE per PT_LOAD section. 926 * name: ??? 927 * namesz: ??? 928 * desc: 929 * a tuple of <phnum>(16),<chk-type>(16),<chk-value>. 930 * descsz: ??? 931 */ 932 #define ELF_NOTE_TYPE_CHECKSUM_TAG 2 933 #define ELF_NOTE_CHECKSUM_CRC32 1 934 #define ELF_NOTE_CHECKSUM_MD5 2 935 #define ELF_NOTE_CHECKSUM_SHA1 3 936 #define ELF_NOTE_CHECKSUM_SHA256 4 937 938 /* 939 * NetBSD-specific note type: PaX. 940 * There should be 1 NOTE per executable. 941 * name: PaX\0 942 * namesz: 4 943 * desc: 944 * word[0]: capability bitmask 945 * descsz: 4 946 */ 947 #define ELF_NOTE_TYPE_PAX_TAG 3 948 #define ELF_NOTE_PAX_MPROTECT 0x01 /* Force enable Mprotect */ 949 #define ELF_NOTE_PAX_NOMPROTECT 0x02 /* Force disable Mprotect */ 950 #define ELF_NOTE_PAX_GUARD 0x04 /* Force enable Segvguard */ 951 #define ELF_NOTE_PAX_NOGUARD 0x08 /* Force disable Segvguard */ 952 #define ELF_NOTE_PAX_ASLR 0x10 /* Force enable ASLR */ 953 #define ELF_NOTE_PAX_NOASLR 0x20 /* Force disable ASLR */ 954 #define ELF_NOTE_PAX_NAMESZ 4 955 #define ELF_NOTE_PAX_NAME "PaX\0" 956 #define ELF_NOTE_PAX_DESCSZ 4 957 958 /* 959 * NetBSD-specific core file information. 960 * 961 * NetBSD ELF core files use notes to provide information about 962 * the process's state. The note name is "NetBSD-CORE" for 963 * information that is global to the process, and "NetBSD-CORE@nn", 964 * where "nn" is the lwpid of the LWP that the information belongs 965 * to (such as register state). 966 * 967 * We use the following note identifiers: 968 * 969 * ELF_NOTE_NETBSD_CORE_PROCINFO 970 * Note is a "netbsd_elfcore_procinfo" structure. 971 * 972 * We also use ptrace(2) request numbers (the ones that exist in 973 * machine-dependent space) to identify register info notes. The 974 * info in such notes is in the same format that ptrace(2) would 975 * export that information. 976 * 977 * Please try to keep the members of this structure nicely aligned, 978 * and if you add elements, add them to the end and bump the version. 979 */ 980 981 #define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE" 982 983 #define ELF_NOTE_NETBSD_CORE_PROCINFO 1 984 985 #define NETBSD_ELFCORE_PROCINFO_VERSION 1 986 987 struct netbsd_elfcore_procinfo { 988 /* Version 1 fields start here. */ 989 uint32_t cpi_version; /* our version */ 990 uint32_t cpi_cpisize; /* sizeof(this struct) */ 991 uint32_t cpi_signo; /* killing signal */ 992 uint32_t cpi_sigcode; /* signal code */ 993 uint32_t cpi_sigpend[4]; /* pending signals */ 994 uint32_t cpi_sigmask[4]; /* blocked signals */ 995 uint32_t cpi_sigignore[4]; /* ignored signals */ 996 uint32_t cpi_sigcatch[4]; /* caught signals */ 997 int32_t cpi_pid; /* process ID */ 998 int32_t cpi_ppid; /* parent process ID */ 999 int32_t cpi_pgrp; /* process group ID */ 1000 int32_t cpi_sid; /* session ID */ 1001 uint32_t cpi_ruid; /* real user ID */ 1002 uint32_t cpi_euid; /* effective user ID */ 1003 uint32_t cpi_svuid; /* saved user ID */ 1004 uint32_t cpi_rgid; /* real group ID */ 1005 uint32_t cpi_egid; /* effective group ID */ 1006 uint32_t cpi_svgid; /* saved group ID */ 1007 uint32_t cpi_nlwps; /* number of LWPs */ 1008 int8_t cpi_name[32]; /* copy of p->p_comm */ 1009 /* Add version 2 fields below here. */ 1010 int32_t cpi_siglwp; /* LWP target of killing signal */ 1011 }; 1012 1013 /* 1014 * NetBSD-specific note type: MACHINE_ARCH. 1015 * There should be 1 NOTE per executable. 1016 * name: NetBSD\0 1017 * namesz: 7 1018 * desc: string 1019 * descsz: variable 1020 */ 1021 #define ELF_NOTE_TYPE_MARCH_TAG 5 1022 /* NetBSD-specific note name and description sizes */ 1023 #define ELF_NOTE_MARCH_NAMESZ ELF_NOTE_NETBSD_NAMESZ 1024 /* NetBSD-specific note name */ 1025 #define ELF_NOTE_MARCH_NAME ELF_NOTE_NETBSD_NAME 1026 1027 /* 1028 * NetBSD-specific note type: MCMODEL 1029 * There should be 1 NOTE per executable. 1030 * name: NetBSD\0 1031 * namesz: 7 1032 * code model: string 1033 */ 1034 1035 #define ELF_NOTE_TYPE_MCMODEL_TAG 6 1036 /* NetBSD-specific note name and description sizes */ 1037 #define ELF_NOTE_MCMODEL_NAMESZ ELF_NOTE_NETBSD_NAMESZ 1038 /* NetBSD-specific note name */ 1039 #define ELF_NOTE_MCMODEL_NAME ELF_NOTE_NETBSD_NAME 1040 1041 1042 #if !defined(ELFSIZE) && defined(ARCH_ELFSIZE) 1043 #define ELFSIZE ARCH_ELFSIZE 1044 #endif 1045 1046 #if defined(ELFSIZE) 1047 #define CONCAT(x,y) __CONCAT(x,y) 1048 #define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x))) 1049 #define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y)))) 1050 #define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE)) 1051 #define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x))) 1052 #endif 1053 1054 #if defined(ELFSIZE) && (ELFSIZE == 32) 1055 #define Elf_Ehdr Elf32_Ehdr 1056 #define Elf_Phdr Elf32_Phdr 1057 #define Elf_Shdr Elf32_Shdr 1058 #define Elf_Sym Elf32_Sym 1059 #define Elf_Rel Elf32_Rel 1060 #define Elf_Rela Elf32_Rela 1061 #define Elf_Dyn Elf32_Dyn 1062 #define Elf_Word Elf32_Word 1063 #define Elf_Sword Elf32_Sword 1064 #define Elf_Half Elf32_Half 1065 #define Elf_Addr Elf32_Addr 1066 #define Elf_Off Elf32_Off 1067 #define Elf_SOff Elf32_SOff 1068 #define Elf_Nhdr Elf32_Nhdr 1069 #define Elf_Verdef Elf32_Verdef 1070 #define Elf_Verdaux Elf32_Verdaux 1071 #define Elf_Verneed Elf32_Verneed 1072 #define Elf_Vernaux Elf32_Vernaux 1073 #define Elf_Versym Elf32_Versym 1074 1075 #define ELF_R_SYM ELF32_R_SYM 1076 #define ELF_R_TYPE ELF32_R_TYPE 1077 #define ELFCLASS ELFCLASS32 1078 1079 #define AuxInfo Aux32Info 1080 #elif defined(ELFSIZE) && (ELFSIZE == 64) 1081 #define Elf_Ehdr Elf64_Ehdr 1082 #define Elf_Phdr Elf64_Phdr 1083 #define Elf_Shdr Elf64_Shdr 1084 #define Elf_Sym Elf64_Sym 1085 #define Elf_Rel Elf64_Rel 1086 #define Elf_Rela Elf64_Rela 1087 #define Elf_Dyn Elf64_Dyn 1088 #define Elf_Word Elf64_Word 1089 #define Elf_Sword Elf64_Sword 1090 #define Elf_Half Elf64_Half 1091 #define Elf_Addr Elf64_Addr 1092 #define Elf_Off Elf64_Off 1093 #define Elf_SOff Elf64_SOff 1094 #define Elf_Nhdr Elf64_Nhdr 1095 #define Elf_Verdef Elf64_Verdef 1096 #define Elf_Verdaux Elf64_Verdaux 1097 #define Elf_Verneed Elf64_Verneed 1098 #define Elf_Vernaux Elf64_Vernaux 1099 #define Elf_Versym Elf64_Versym 1100 1101 #define ELF_R_SYM ELF64_R_SYM 1102 #define ELF_R_TYPE ELF64_R_TYPE 1103 #define ELFCLASS ELFCLASS64 1104 1105 #define AuxInfo Aux64Info 1106 #endif 1107 1108 #ifndef Elf_Symindx 1109 #define Elf_Symindx uint32_t 1110 #endif 1111 1112 #define ELF32_ST_BIND(info) ELF_ST_BIND(info) 1113 #define ELF32_ST_TYPE(info) ELF_ST_TYPE(info) 1114 #define ELF32_ST_INFO(bind,type) ELF_ST_INFO(bind,type) 1115 #define ELF32_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other) 1116 1117 #define ELF64_ST_BIND(info) ELF_ST_BIND(info) 1118 #define ELF64_ST_TYPE(info) ELF_ST_TYPE(info) 1119 #define ELF64_ST_INFO(bind,type) ELF_ST_INFO(bind,type) 1120 #define ELF64_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other) 1121 1122 typedef struct { 1123 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 1124 Elf32_Half si_flags; /* per symbol flags */ 1125 } Elf32_Syminfo; 1126 1127 typedef struct { 1128 Elf64_Word si_boundto; /* direct bindings - symbol bound to */ 1129 Elf64_Word si_flags; /* per symbol flags */ 1130 } Elf64_Syminfo; 1131 1132 #define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association 1133 to object containing definition */ 1134 #define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */ 1135 #define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */ 1136 #define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn should be 1137 lazily-loaded */ 1138 #define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to 1139 object containing definition */ 1140 #define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference 1141 directly bind to this symbol */ 1142 #define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */ 1143 #define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */ 1144 1145 #define SYMINFO_BT_SELF 0xffff /* symbol bound to self */ 1146 #define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */ 1147 #define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */ 1148 #define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */ 1149 #define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */ 1150 1151 #define SYMINFO_NONE 0 /* Syminfo version */ 1152 #define SYMINFO_CURRENT 1 1153 #define SYMINFO_NUM 2 1154 1155 /* 1156 * These constants are used for Elf32_Verdef struct's version number. 1157 */ 1158 #define VER_DEF_NONE 0 1159 #define VER_DEF_CURRENT 1 1160 1161 /* 1162 * These constants are used for Elf32_Verdef struct's vd_ndx. 1163 */ 1164 #define VER_DEF_IDX(x) VER_NDX(x) 1165 1166 /* 1167 * These constants are used for Elf32_Verdef struct's vd_flags. 1168 */ 1169 #define VER_FLG_BASE 0x1 1170 #define VER_FLG_WEAK 0x2 1171 1172 /* 1173 * These are used in an Elf32_Versym field. 1174 */ 1175 #define VER_NDX_LOCAL 0 1176 #define VER_NDX_GLOBAL 1 1177 #define VER_NDX_GIVEN 2 1178 1179 /* 1180 * These constants are used for Elf32_Verneed struct's version number. 1181 */ 1182 #define VER_NEED_NONE 0 1183 #define VER_NEED_CURRENT 1 1184 1185 /* 1186 * These constants are used for Elf32_Vernaux struct's vna_other. 1187 */ 1188 #define VER_NEED_HIDDEN VER_NDX_HIDDEN 1189 #define VER_NEED_IDX(x) VER_NDX(x) 1190 1191 /* index */ 1192 #define VER_NDX_HIDDEN 0x8000 1193 #define VER_NDX(x) ((x) & ~VER_NDX_HIDDEN) 1194 1195 /* 1196 * GNU Extension hidding symbol 1197 */ 1198 #define VERSYM_HIDDEN 0x8000 1199 #define VERSYM_VERSION 0x7fff 1200 1201 #define ELF_VER_CHR '@' 1202 1203 /* 1204 * These are current size independent. 1205 */ 1206 1207 typedef struct { 1208 Elf32_Half vd_version; /* version number of structure */ 1209 Elf32_Half vd_flags; /* flags (VER_FLG_*) */ 1210 Elf32_Half vd_ndx; /* version index */ 1211 Elf32_Half vd_cnt; /* number of verdaux entries */ 1212 Elf32_Word vd_hash; /* hash of name */ 1213 Elf32_Word vd_aux; /* offset to verdaux entries */ 1214 Elf32_Word vd_next; /* offset to next verdef */ 1215 } Elf32_Verdef; 1216 typedef Elf32_Verdef Elf64_Verdef; 1217 1218 typedef struct { 1219 Elf32_Word vda_name; /* string table offset of name */ 1220 Elf32_Word vda_next; /* offset to verdaux */ 1221 } Elf32_Verdaux; 1222 typedef Elf32_Verdaux Elf64_Verdaux; 1223 1224 typedef struct { 1225 Elf32_Half vn_version; /* version number of structure */ 1226 Elf32_Half vn_cnt; /* number of vernaux entries */ 1227 Elf32_Word vn_file; /* string table offset of library name*/ 1228 Elf32_Word vn_aux; /* offset to vernaux entries */ 1229 Elf32_Word vn_next; /* offset to next verneed */ 1230 } Elf32_Verneed; 1231 typedef Elf32_Verneed Elf64_Verneed; 1232 1233 typedef struct { 1234 Elf32_Word vna_hash; /* Hash of dependency name */ 1235 Elf32_Half vna_flags; /* flags (VER_FLG_*) */ 1236 Elf32_Half vna_other; /* unused */ 1237 Elf32_Word vna_name; /* string table offset to version name*/ 1238 Elf32_Word vna_next; /* offset to next vernaux */ 1239 } Elf32_Vernaux; 1240 typedef Elf32_Vernaux Elf64_Vernaux; 1241 1242 typedef struct { 1243 Elf32_Half vs_vers; 1244 } Elf32_Versym; 1245 typedef Elf32_Versym Elf64_Versym; 1246 1247 #ifdef _KERNEL 1248 1249 /* 1250 * Arbitrary limits to avoid DoS for excessive memory allocation. 1251 */ 1252 #define ELF_MAXPHNUM 128 1253 #define ELF_MAXSHNUM 32768 1254 #define ELF_MAXNOTESIZE 1024 1255 1256 #define ELF_AUX_ENTRIES 15 /* Max size of aux array passed to loader */ 1257 #define ELF32_NO_ADDR (~(Elf32_Addr)0) /* Indicates addr. not yet filled in */ 1258 #define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */ 1259 #define ELF64_NO_ADDR (~(Elf64_Addr)0) /* Indicates addr. not yet filled in */ 1260 #define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */ 1261 1262 #if defined(ELFSIZE) && (ELFSIZE == 64) 1263 #define ELF_NO_ADDR ELF64_NO_ADDR 1264 #define ELF_LINK_ADDR ELF64_LINK_ADDR 1265 #elif defined(ELFSIZE) && (ELFSIZE == 32) 1266 #define ELF_NO_ADDR ELF32_NO_ADDR 1267 #define ELF_LINK_ADDR ELF32_LINK_ADDR 1268 #endif 1269 1270 #ifndef ELF32_EHDR_FLAGS_OK 1271 #define ELF32_EHDR_FLAGS_OK(eh) 1 1272 #endif 1273 1274 #ifndef ELF64_EHDR_FLAGS_OK 1275 #define ELF64_EHDR_FLAGS_OK(eh) 1 1276 #endif 1277 1278 #if defined(ELFSIZE) && (ELFSIZE == 64) 1279 #define ELF_EHDR_FLAGS_OK(eh) ELF64_EHDR_FLAGS_OK(eh) 1280 #else 1281 #define ELF_EHDR_FLAGS_OK(eh) ELF32_EHDR_FLAGS_OK(eh) 1282 #endif 1283 1284 #if defined(ELFSIZE) 1285 struct elf_args { 1286 Elf_Addr arg_entry; /* program entry point */ 1287 Elf_Addr arg_interp; /* Interpreter load address */ 1288 Elf_Addr arg_phaddr; /* program header address */ 1289 Elf_Addr arg_phentsize; /* Size of program header */ 1290 Elf_Addr arg_phnum; /* Number of program headers */ 1291 }; 1292 #endif 1293 1294 #ifdef _KERNEL_OPT 1295 #include "opt_execfmt.h" 1296 #endif 1297 1298 struct ps_strings; 1299 struct coredump_iostate; 1300 struct note_state; 1301 struct exec_package; 1302 1303 #ifdef EXEC_ELF32 1304 int exec_elf32_makecmds(struct lwp *, struct exec_package *); 1305 int elf32_copyargs(struct lwp *, struct exec_package *, 1306 struct ps_strings *, char **, void *); 1307 1308 int coredump_elf32(struct lwp *, struct coredump_iostate *); 1309 void coredump_savenote_elf32(struct note_state *, unsigned int, 1310 const char *, void *, size_t); 1311 1312 int elf32_check_header(Elf32_Ehdr *); 1313 #endif 1314 1315 #ifdef EXEC_ELF64 1316 int exec_elf64_makecmds(struct lwp *, struct exec_package *); 1317 int elf64_copyargs(struct lwp *, struct exec_package *, 1318 struct ps_strings *, char **, void *); 1319 1320 int coredump_elf64(struct lwp *, struct coredump_iostate *); 1321 void coredump_savenote_elf64(struct note_state *, unsigned int, 1322 const char *, void *, size_t); 1323 1324 int elf64_check_header(Elf64_Ehdr *); 1325 #endif 1326 1327 #endif /* _KERNEL */ 1328 1329 #endif /* !_SYS_EXEC_ELF_H_ */ 1330