| 1 | /* |
| 2 | * Copyright 2002-2015 Haiku, Inc. All rights reserved. |
| 3 | * Distributed under the terms of the MIT License. |
| 4 | */ |
| 5 | #ifndef _ELF_H |
| 6 | #define _ELF_H |
| 7 | |
| 8 | |
| 9 | #include <SupportDefs.h> |
| 10 | #include <ByteOrder.h> |
| 11 | |
| 12 | |
| 13 | typedef uint32 Elf32_Addr; |
| 14 | typedef uint16 Elf32_Half; |
| 15 | typedef uint32 Elf32_Off; |
| 16 | typedef int32 Elf32_Sword; |
| 17 | typedef uint32 Elf32_Word; |
| 18 | |
| 19 | typedef Elf32_Half Elf32_Versym; |
| 20 | |
| 21 | typedef uint64 Elf64_Addr; |
| 22 | typedef uint64 Elf64_Off; |
| 23 | typedef uint16 Elf64_Half; |
| 24 | typedef uint32 Elf64_Word; |
| 25 | typedef int32 Elf64_Sword; |
| 26 | typedef uint64 Elf64_Xword; |
| 27 | typedef int64 Elf64_Sxword; |
| 28 | |
| 29 | typedef Elf64_Half Elf64_Versym; |
| 30 | |
| 31 | |
| 32 | /*** ELF header ***/ |
| 33 | |
| 34 | #define EI_NIDENT 16 |
| 35 | |
| 36 | typedef struct { |
| 37 | uint8 e_ident[EI_NIDENT]; |
| 38 | Elf32_Half e_type; |
| 39 | Elf32_Half e_machine; |
| 40 | Elf32_Word e_version; |
| 41 | Elf32_Addr e_entry; |
| 42 | Elf32_Off e_phoff; |
| 43 | Elf32_Off e_shoff; |
| 44 | Elf32_Word e_flags; |
| 45 | Elf32_Half e_ehsize; |
| 46 | Elf32_Half e_phentsize; |
| 47 | Elf32_Half e_phnum; |
| 48 | Elf32_Half e_shentsize; |
| 49 | Elf32_Half e_shnum; |
| 50 | Elf32_Half e_shstrndx; |
| 51 | |
| 52 | #ifdef __cplusplus |
| 53 | bool IsHostEndian() const; |
| 54 | #endif |
| 55 | } Elf32_Ehdr; |
| 56 | |
| 57 | typedef struct { |
| 58 | uint8 e_ident[EI_NIDENT]; |
| 59 | Elf64_Half e_type; |
| 60 | Elf64_Half e_machine; |
| 61 | Elf64_Word e_version; |
| 62 | Elf64_Addr e_entry; |
| 63 | Elf64_Off e_phoff; |
| 64 | Elf64_Off e_shoff; |
| 65 | Elf64_Word e_flags; |
| 66 | Elf64_Half e_ehsize; |
| 67 | Elf64_Half e_phentsize; |
| 68 | Elf64_Half e_phnum; |
| 69 | Elf64_Half e_shentsize; |
| 70 | Elf64_Half e_shnum; |
| 71 | Elf64_Half e_shstrndx; |
| 72 | |
| 73 | #ifdef __cplusplus |
| 74 | bool IsHostEndian() const; |
| 75 | #endif |
| 76 | } Elf64_Ehdr; |
| 77 | |
| 78 | #define ELF_MAGIC "\x7f""ELF" |
| 79 | |
| 80 | /* e_ident[] indices */ |
| 81 | #define EI_MAG0 0 |
| 82 | #define EI_MAG1 1 |
| 83 | #define EI_MAG2 2 |
| 84 | #define EI_MAG3 3 |
| 85 | #define EI_CLASS 4 |
| 86 | #define EI_DATA 5 |
| 87 | #define EI_VERSION 6 |
| 88 | #define EI_PAD 7 |
| 89 | |
| 90 | /* e_type (Object file type) */ |
| 91 | #define ET_NONE 0 /* No file type */ |
| 92 | #define ET_REL 1 /* Relocatable file */ |
| 93 | #define ET_EXEC 2 /* Executable file */ |
| 94 | #define ET_DYN 3 /* Shared-object file */ |
| 95 | #define ET_CORE 4 /* Core file */ |
| 96 | #define ET_LOOS 0xfe00 /* OS-specific range start */ |
| 97 | #define ET_HIOS 0xfeff /* OS-specific range end */ |
| 98 | #define ET_LOPROC 0xff00 /* Processor-specific range start */ |
| 99 | #define ET_HIPROC 0xffff /* Processor-specific range end */ |
| 100 | |
| 101 | /* e_machine (Architecture) */ |
| 102 | #define EM_NONE 0 /* No machine */ |
| 103 | #define EM_M32 1 /* AT&T WE 32100 */ |
| 104 | #define EM_SPARC 2 /* Sparc */ |
| 105 | #define EM_386 3 /* Intel 80386 */ |
| 106 | #define EM_68K 4 /* Motorola m68k family */ |
| 107 | #define EM_88K 5 /* Motorola m88k family */ |
| 108 | #define EM_486 6 /* Intel 80486, Reserved for future use */ |
| 109 | #define EM_860 7 /* Intel 80860 */ |
| 110 | #define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */ |
| 111 | #define EM_S370 9 /* IBM System/370 */ |
| 112 | #define EM_MIPS_RS3_LE 10 /* MIPS R3000 little-endian, Deprecated */ |
| 113 | #define EM_PARISC 15 /* HPPA */ |
| 114 | #define EM_VPP550 17 /* Fujitsu VPP500 */ |
| 115 | #define EM_SPARC32PLUS 18 /* Sun "v8plus" */ |
| 116 | #define EM_960 19 /* Intel 80960 */ |
| 117 | #define EM_PPC 20 /* PowerPC */ |
| 118 | #define EM_PPC64 21 /* 64-bit PowerPC */ |
| 119 | #define EM_S390 22 /* IBM S/390 */ |
| 120 | #define EM_V800 36 /* NEC V800 series */ |
| 121 | #define EM_FR20 37 /* Fujitsu FR20 */ |
| 122 | #define EM_RH32 38 /* TRW RH32 */ |
| 123 | #define EM_MCORE 39 /* Motorola M*Core */ |
| 124 | #define EM_RCE 39 /* Old name for MCore */ |
| 125 | #define EM_ARM 40 /* ARM */ |
| 126 | #define EM_OLD_ALPHA 41 /* Digital Alpha */ |
| 127 | #define EM_SH 42 /* Renesas / SuperH SH */ |
| 128 | #define EM_SPARCV9 43 /* SPARC v9 64-bit */ |
| 129 | #define EM_TRICORE 44 /* Siemens Tricore embedded processor */ |
| 130 | #define EM_ARC 45 /* ARC Cores */ |
| 131 | #define EM_H8_300 46 /* Renesas H8/300 */ |
| 132 | #define EM_H8_300H 47 /* Renesas H8/300H */ |
| 133 | #define EM_H8S 48 /* Renesas H8S */ |
| 134 | #define EM_H8_500 49 /* Renesas H8/500 */ |
| 135 | #define EM_IA_64 50 /* Intel IA-64 Processor */ |
| 136 | #define EM_MIPS_X 51 /* Stanford MIPS-X */ |
| 137 | #define EM_COLDFIRE 52 /* Motorola Coldfire */ |
| 138 | #define EM_68HC12 53 /* Motorola M68HC12 */ |
| 139 | #define EM_MMA 54 /* Fujitsu Multimedia Accelerator */ |
| 140 | #define EM_PCP 55 /* Siemens PCP */ |
| 141 | #define EM_NCPU 56 /* Sony nCPU embedded RISC processor */ |
| 142 | #define EM_NDR1 57 /* Denso NDR1 microprocesspr */ |
| 143 | #define EM_STARCORE 58 /* Motorola Star*Core processor */ |
| 144 | #define EM_ME16 59 /* Toyota ME16 processor */ |
| 145 | #define EM_ST100 60 /* STMicroelectronics ST100 processor */ |
| 146 | #define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded processor */ |
| 147 | #define EM_X86_64 62 /* Advanced Micro Devices X86-64 processor */ |
| 148 | |
| 149 | /* architecture class (EI_CLASS) */ |
| 150 | #define ELFCLASS32 1 |
| 151 | #define ELFCLASS64 2 |
| 152 | /* endian (EI_DATA) */ |
| 153 | #define ELFDATA2LSB 1 /* little endian */ |
| 154 | #define ELFDATA2MSB 2 /* big endian */ |
| 155 | |
| 156 | |
| 157 | /*** section header ***/ |
| 158 | |
| 159 | typedef struct { |
| 160 | Elf32_Word sh_name; |
| 161 | Elf32_Word sh_type; |
| 162 | Elf32_Word sh_flags; |
| 163 | Elf32_Addr sh_addr; |
| 164 | Elf32_Off sh_offset; |
| 165 | Elf32_Word sh_size; |
| 166 | Elf32_Word sh_link; |
| 167 | Elf32_Word sh_info; |
| 168 | Elf32_Word sh_addralign; |
| 169 | Elf32_Word sh_entsize; |
| 170 | } Elf32_Shdr; |
| 171 | |
| 172 | typedef struct { |
| 173 | Elf64_Word sh_name; |
| 174 | Elf64_Word sh_type; |
| 175 | Elf64_Xword sh_flags; |
| 176 | Elf64_Addr sh_addr; |
| 177 | Elf64_Off sh_offset; |
| 178 | Elf64_Xword sh_size; |
| 179 | Elf64_Word sh_link; |
| 180 | Elf64_Word sh_info; |
| 181 | Elf64_Xword sh_addralign; |
| 182 | Elf64_Xword sh_entsize; |
| 183 | } Elf64_Shdr; |
| 184 | |
| 185 | /* special section indices */ |
| 186 | #define SHN_UNDEF 0 |
| 187 | #define SHN_LORESERVE 0xff00 |
| 188 | #define SHN_LOPROC 0xff00 |
| 189 | #define SHN_HIPROC 0xff1f |
| 190 | #define SHN_ABS 0xfff1 |
| 191 | #define SHN_COMMON 0xfff2 |
| 192 | #define SHN_HIRESERVE 0xffff |
| 193 | |
| 194 | /* section header type */ |
| 195 | #define SHT_NULL 0 |
| 196 | #define SHT_PROGBITS 1 |
| 197 | #define SHT_SYMTAB 2 |
| 198 | #define SHT_STRTAB 3 |
| 199 | #define SHT_RELA 4 |
| 200 | #define SHT_HASH 5 |
| 201 | #define SHT_DYNAMIC 6 |
| 202 | #define SHT_NOTE 7 |
| 203 | #define SHT_NOBITS 8 |
| 204 | #define SHT_REL 9 |
| 205 | #define SHT_SHLIB 10 |
| 206 | #define SHT_DYNSYM 11 |
| 207 | |
| 208 | #define SHT_GNU_verdef 0x6ffffffd /* version definition section */ |
| 209 | #define SHT_GNU_verneed 0x6ffffffe /* version needs section */ |
| 210 | #define SHT_GNU_versym 0x6fffffff /* version symbol table */ |
| 211 | |
| 212 | #define SHT_LOPROC 0x70000000 |
| 213 | #define SHT_HIPROC 0x7fffffff |
| 214 | #define SHT_LOUSER 0x80000000 |
| 215 | #define SHT_HIUSER 0xffffffff |
| 216 | |
| 217 | /* section header flags */ |
| 218 | #define SHF_WRITE 1 |
| 219 | #define SHF_ALLOC 2 |
| 220 | #define SHF_EXECINSTR 4 |
| 221 | |
| 222 | #define SHF_MASKPROC 0xf0000000 |
| 223 | |
| 224 | |
| 225 | /*** program header ***/ |
| 226 | |
| 227 | typedef struct { |
| 228 | Elf32_Word p_type; |
| 229 | Elf32_Off p_offset; /* offset from the beginning of the file of the segment */ |
| 230 | Elf32_Addr p_vaddr; /* virtual address for the segment in memory */ |
| 231 | Elf32_Addr p_paddr; |
| 232 | Elf32_Word p_filesz; /* the size of the segment in the file */ |
| 233 | Elf32_Word p_memsz; /* the size of the segment in memory */ |
| 234 | Elf32_Word p_flags; |
| 235 | Elf32_Word p_align; |
| 236 | |
| 237 | #ifdef __cplusplus |
| 238 | bool IsReadWrite() const; |
| 239 | bool IsExecutable() const; |
| 240 | #endif |
| 241 | } Elf32_Phdr; |
| 242 | |
| 243 | typedef struct { |
| 244 | Elf64_Word p_type; |
| 245 | Elf64_Word p_flags; |
| 246 | Elf64_Off p_offset; /* offset from the beginning of the file of the segment */ |
| 247 | Elf64_Addr p_vaddr; /* virtual address for the segment in memory */ |
| 248 | Elf64_Addr p_paddr; |
| 249 | Elf64_Xword p_filesz; /* the size of the segment in the file */ |
| 250 | Elf64_Xword p_memsz; /* the size of the segment in memory */ |
| 251 | Elf64_Xword p_align; |
| 252 | |
| 253 | #ifdef __cplusplus |
| 254 | bool IsReadWrite() const; |
| 255 | bool IsExecutable() const; |
| 256 | #endif |
| 257 | } Elf64_Phdr; |
| 258 | |
| 259 | /* program header segment types */ |
| 260 | #define PT_NULL 0 |
| 261 | #define PT_LOAD 1 |
| 262 | #define PT_DYNAMIC 2 |
| 263 | #define PT_INTERP 3 |
| 264 | #define PT_NOTE 4 |
| 265 | #define PT_SHLIB 5 |
| 266 | #define PT_PHDR 6 |
| 267 | #define PT_TLS 7 |
| 268 | #define PT_STACK 0x6474e551 |
| 269 | #define PT_RELRO 0x6474e552 |
| 270 | |
| 271 | #define PT_LOPROC 0x70000000 |
| 272 | #define PT_ARM_UNWIND 0x70000001 |
| 273 | #define PT_HIPROC 0x7fffffff |
| 274 | |
| 275 | /* program header segment flags */ |
| 276 | #define PF_EXECUTE 0x1 |
| 277 | #define PF_WRITE 0x2 |
| 278 | #define PF_READ 0x4 |
| 279 | #define PF_PROTECTION_MASK (PF_EXECUTE | PF_WRITE | PF_READ) |
| 280 | |
| 281 | #define PF_MASKPROC 0xf0000000 |
| 282 | |
| 283 | |
| 284 | /* symbol table entry */ |
| 285 | |
| 286 | typedef struct { |
| 287 | Elf32_Word st_name; |
| 288 | Elf32_Addr st_value; |
| 289 | Elf32_Word st_size; |
| 290 | uint8 st_info; |
| 291 | uint8 st_other; |
| 292 | Elf32_Half st_shndx; |
| 293 | |
| 294 | #ifdef __cplusplus |
| 295 | uint8 Bind() const; |
| 296 | uint8 Type() const; |
| 297 | void SetInfo(uint8 bind, uint8 type); |
| 298 | #endif |
| 299 | } Elf32_Sym; |
| 300 | |
| 301 | typedef struct { |
| 302 | Elf64_Word st_name; |
| 303 | uint8 st_info; |
| 304 | uint8 st_other; |
| 305 | Elf64_Half st_shndx; |
| 306 | Elf64_Addr st_value; |
| 307 | Elf64_Xword st_size; |
| 308 | |
| 309 | #ifdef __cplusplus |
| 310 | uint8 Bind() const; |
| 311 | uint8 Type() const; |
| 312 | void SetInfo(uint8 bind, uint8 type); |
| 313 | #endif |
| 314 | } Elf64_Sym; |
| 315 | |
| 316 | #define ELF32_ST_BIND(i) ((i) >> 4) |
| 317 | #define ELF32_ST_TYPE(i) ((i) & 0xf) |
| 318 | #define ELF32_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf)) |
| 319 | |
| 320 | #define ELF64_ST_BIND(i) ((i) >> 4) |
| 321 | #define ELF64_ST_TYPE(i) ((i) & 0xf) |
| 322 | #define ELF64_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf)) |
| 323 | |
| 324 | /* symbol types */ |
| 325 | #define STT_NOTYPE 0 |
| 326 | #define STT_OBJECT 1 |
| 327 | #define STT_FUNC 2 |
| 328 | #define STT_SECTION 3 |
| 329 | #define STT_FILE 4 |
| 330 | #define STT_TLS 6 |
| 331 | #define STT_LOPROC 13 |
| 332 | #define STT_HIPROC 15 |
| 333 | |
| 334 | /* symbol binding */ |
| 335 | #define STB_LOCAL 0 |
| 336 | #define STB_GLOBAL 1 |
| 337 | #define STB_WEAK 2 |
| 338 | #define STB_LOPROC 13 |
| 339 | #define STB_HIPROC 15 |
| 340 | |
| 341 | /* special symbol indices */ |
| 342 | #define STN_UNDEF 0 |
| 343 | |
| 344 | |
| 345 | /* relocation table entry */ |
| 346 | |
| 347 | typedef struct { |
| 348 | Elf32_Addr r_offset; |
| 349 | Elf32_Word r_info; |
| 350 | |
| 351 | #ifdef __cplusplus |
| 352 | uint8 SymbolIndex() const; |
| 353 | uint8 Type() const; |
| 354 | #endif |
| 355 | } Elf32_Rel; |
| 356 | |
| 357 | typedef struct { |
| 358 | Elf64_Addr r_offset; |
| 359 | Elf64_Xword r_info; |
| 360 | |
| 361 | #ifdef __cplusplus |
| 362 | uint8 SymbolIndex() const; |
| 363 | uint8 Type() const; |
| 364 | #endif |
| 365 | } Elf64_Rel; |
| 366 | |
| 367 | #ifdef __cplusplus |
| 368 | typedef struct Elf32_Rela : public Elf32_Rel { |
| 369 | #else |
| 370 | typedef struct { |
| 371 | Elf32_Addr r_offset; |
| 372 | Elf32_Word r_info; |
| 373 | #endif |
| 374 | Elf32_Sword r_addend; |
| 375 | } Elf32_Rela; |
| 376 | |
| 377 | #ifdef __cplusplus |
| 378 | typedef struct Elf64_Rela : public Elf64_Rel { |
| 379 | #else |
| 380 | typedef struct { |
| 381 | Elf64_Addr r_offset; |
| 382 | Elf64_Xword r_info; |
| 383 | #endif |
| 384 | Elf64_Sxword r_addend; |
| 385 | } Elf64_Rela; |
| 386 | |
| 387 | #define ELF32_R_SYM(i) ((i) >> 8) |
| 388 | #define ELF32_R_TYPE(i) ((unsigned char)(i)) |
| 389 | #define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t)) |
| 390 | |
| 391 | #define ELF64_R_SYM(i) ((i) >> 32) |
| 392 | #define ELF64_R_TYPE(i) ((i) & 0xffffffffL) |
| 393 | #define ELF64_R_INFO(s, t) ((((Elf64_Xword)(s)) << 32) + ((t) & 0xffffffffL)) |
| 394 | |
| 395 | |
| 396 | /* dynamic section entry */ |
| 397 | |
| 398 | typedef struct { |
| 399 | Elf32_Sword d_tag; |
| 400 | union { |
| 401 | Elf32_Word d_val; |
| 402 | Elf32_Addr d_ptr; |
| 403 | } d_un; |
| 404 | } Elf32_Dyn; |
| 405 | |
| 406 | typedef struct { |
| 407 | Elf64_Sxword d_tag; |
| 408 | union { |
| 409 | Elf64_Xword d_val; |
| 410 | Elf64_Addr d_ptr; |
| 411 | } d_un; |
| 412 | } Elf64_Dyn; |
| 413 | |
| 414 | /* dynamic entry type */ |
| 415 | #define DT_NULL 0 |
| 416 | #define DT_NEEDED 1 |
| 417 | #define DT_PLTRELSZ 2 |
| 418 | #define DT_PLTGOT 3 |
| 419 | #define DT_HASH 4 |
| 420 | #define DT_STRTAB 5 |
| 421 | #define DT_SYMTAB 6 |
| 422 | #define DT_RELA 7 |
| 423 | #define DT_RELASZ 8 |
| 424 | #define DT_RELAENT 9 |
| 425 | #define DT_STRSZ 10 |
| 426 | #define DT_SYMENT 11 |
| 427 | #define DT_INIT 12 |
| 428 | #define DT_FINI 13 |
| 429 | #define DT_SONAME 14 |
| 430 | #define DT_RPATH 15 |
| 431 | #define DT_SYMBOLIC 16 |
| 432 | #define DT_REL 17 |
| 433 | #define DT_RELSZ 18 |
| 434 | #define DT_RELENT 19 |
| 435 | #define DT_PLTREL 20 |
| 436 | #define DT_DEBUG 21 |
| 437 | #define DT_TEXTREL 22 |
| 438 | #define DT_JMPREL 23 |
| 439 | #define DT_BIND_NOW 24 /* no lazy binding */ |
| 440 | #define DT_INIT_ARRAY 25 /* init function array */ |
| 441 | #define DT_FINI_ARRAY 26 /* termination function array */ |
| 442 | #define DT_INIT_ARRAYSZ 27 /* init function array size */ |
| 443 | #define DT_FINI_ARRAYSZ 28 /* termination function array size */ |
| 444 | #define DT_RUNPATH 29 /* library search path (supersedes DT_RPATH) */ |
| 445 | #define DT_FLAGS 30 /* flags (see below) */ |
| 446 | #define DT_ENCODING 32 |
| 447 | #define DT_PREINIT_ARRAY 32 /* preinitialization array */ |
| 448 | #define DT_PREINIT_ARRAYSZ 33 /* preinitialization array size */ |
| 449 | |
| 450 | #define DT_VERSYM 0x6ffffff0 /* symbol version table */ |
| 451 | #define DT_VERDEF 0x6ffffffc /* version definition table */ |
| 452 | #define DT_VERDEFNUM 0x6ffffffd /* number of version definitions */ |
| 453 | #define DT_VERNEED 0x6ffffffe /* table with needed versions */ |
| 454 | #define DT_VERNEEDNUM 0x6fffffff /* number of needed versions */ |
| 455 | |
| 456 | #define DT_LOPROC 0x70000000 |
| 457 | #define DT_HIPROC 0x7fffffff |
| 458 | |
| 459 | /* DT_FLAGS values */ |
| 460 | #define DF_ORIGIN 0x01 |
| 461 | #define DF_SYMBOLIC 0x02 |
| 462 | #define DF_TEXTREL 0x04 |
| 463 | #define DF_BIND_NOW 0x08 |
| 464 | #define DF_STATIC_TLS 0x10 |
| 465 | |
| 466 | |
| 467 | /* version definition section */ |
| 468 | |
| 469 | typedef struct { |
| 470 | Elf32_Half vd_version; /* version revision */ |
| 471 | Elf32_Half vd_flags; /* version information flags */ |
| 472 | Elf32_Half vd_ndx; /* version index as specified in the |
| 473 | symbol version table */ |
| 474 | Elf32_Half vd_cnt; /* number of associated verdaux entries */ |
| 475 | Elf32_Word vd_hash; /* version name hash value */ |
| 476 | Elf32_Word vd_aux; /* byte offset to verdaux array */ |
| 477 | Elf32_Word vd_next; /* byte offset to next verdef entry */ |
| 478 | } Elf32_Verdef; |
| 479 | |
| 480 | typedef struct { |
| 481 | Elf64_Half vd_version; /* version revision */ |
| 482 | Elf64_Half vd_flags; /* version information flags */ |
| 483 | Elf64_Half vd_ndx; /* version index as specified in the |
| 484 | symbol version table */ |
| 485 | Elf64_Half vd_cnt; /* number of associated verdaux entries */ |
| 486 | Elf64_Word vd_hash; /* version name hash value */ |
| 487 | Elf64_Word vd_aux; /* byte offset to verdaux array */ |
| 488 | Elf64_Word vd_next; /* byte offset to next verdef entry */ |
| 489 | } Elf64_Verdef; |
| 490 | |
| 491 | /* values for vd_version (version revision) */ |
| 492 | #define VER_DEF_NONE 0 /* no version */ |
| 493 | #define VER_DEF_CURRENT 1 /* current version */ |
| 494 | #define VER_DEF_NUM 2 /* given version number */ |
| 495 | |
| 496 | /* values for vd_flags (version information flags) */ |
| 497 | #define VER_FLG_BASE 0x1 /* version definition of file itself */ |
| 498 | #define VER_FLG_WEAK 0x2 /* weak version identifier */ |
| 499 | |
| 500 | /* values for versym symbol index */ |
| 501 | #define VER_NDX_LOCAL 0 /* symbol is local */ |
| 502 | #define VER_NDX_GLOBAL 1 /* symbol is global/unversioned */ |
| 503 | #define VER_NDX_INITIAL 2 /* initial version -- that's the one given |
| 504 | to symbols when a library becomes |
| 505 | versioned; handled by the linker (and |
| 506 | runtime loader) similar to |
| 507 | VER_NDX_GLOBAL */ |
| 508 | #define VER_NDX_LORESERVE 0xff00 /* beginning of reserved entries */ |
| 509 | #define VER_NDX_ELIMINATE 0xff01 /* symbol is to be eliminated */ |
| 510 | |
| 511 | #define VER_NDX_FLAG_HIDDEN 0x8000 /* flag: version is hidden */ |
| 512 | #define VER_NDX_MASK 0x7fff /* mask to get the actual version index */ |
| 513 | #define VER_NDX(x) ((x) & VER_NDX_MASK) |
| 514 | |
| 515 | |
| 516 | /* auxiliary version information */ |
| 517 | |
| 518 | typedef struct { |
| 519 | Elf32_Word vda_name; /* string table offset to version or dependency |
| 520 | name */ |
| 521 | Elf32_Word vda_next; /* byte offset to next verdaux entry */ |
| 522 | } Elf32_Verdaux; |
| 523 | |
| 524 | typedef struct { |
| 525 | Elf64_Word vda_name; /* string table offset to version or dependency |
| 526 | name */ |
| 527 | Elf64_Word vda_next; /* byte offset to next verdaux entry */ |
| 528 | } Elf64_Verdaux; |
| 529 | |
| 530 | |
| 531 | /* version dependency section */ |
| 532 | |
| 533 | typedef struct { |
| 534 | Elf32_Half vn_version; /* version of structure */ |
| 535 | Elf32_Half vn_cnt; /* number of associated vernaux entries */ |
| 536 | Elf32_Word vn_file; /* byte offset to file name for this |
| 537 | dependency */ |
| 538 | Elf32_Word vn_aux; /* byte offset to vernaux array */ |
| 539 | Elf32_Word vn_next; /* byte offset to next verneed entry */ |
| 540 | } Elf32_Verneed; |
| 541 | |
| 542 | typedef struct { |
| 543 | Elf64_Half vn_version; /* version of structure */ |
| 544 | Elf64_Half vn_cnt; /* number of associated vernaux entries */ |
| 545 | Elf64_Word vn_file; /* byte offset to file name for this |
| 546 | dependency */ |
| 547 | Elf64_Word vn_aux; /* byte offset to vernaux array */ |
| 548 | Elf64_Word vn_next; /* byte offset to next verneed entry */ |
| 549 | } Elf64_Verneed; |
| 550 | |
| 551 | /* values for vn_version (version revision) */ |
| 552 | #define VER_NEED_NONE 0 /* no version */ |
| 553 | #define VER_NEED_CURRENT 1 /* current version */ |
| 554 | #define VER_NEED_NUM 2 /* given version number */ |
| 555 | |
| 556 | |
| 557 | /* auxiliary needed version information */ |
| 558 | |
| 559 | typedef struct { |
| 560 | Elf32_Word vna_hash; /* dependency name hash value */ |
| 561 | Elf32_Half vna_flags; /* dependency specific information flags */ |
| 562 | Elf32_Half vna_other; /* version index as specified in the symbol |
| 563 | version table */ |
| 564 | Elf32_Word vna_name; /* string table offset to dependency name */ |
| 565 | Elf32_Word vna_next; /* byte offset to next vernaux entry */ |
| 566 | } Elf32_Vernaux; |
| 567 | |
| 568 | typedef struct { |
| 569 | Elf64_Word vna_hash; /* dependency name hash value */ |
| 570 | Elf64_Half vna_flags; /* dependency specific information flags */ |
| 571 | Elf64_Half vna_other; /* version index as specified in the symbol |
| 572 | version table */ |
| 573 | Elf64_Word vna_name; /* string table offset to dependency name */ |
| 574 | Elf64_Word vna_next; /* byte offset to next vernaux entry */ |
| 575 | } Elf64_Vernaux; |
| 576 | |
| 577 | /* values for vna_flags */ |
| 578 | #define VER_FLG_WEAK 0x2 /* weak version identifier */ |
| 579 | |
| 580 | |
| 581 | /*** inline functions ***/ |
| 582 | |
| 583 | #ifdef __cplusplus |
| 584 | |
| 585 | inline bool |
| 586 | Elf32_Ehdr::IsHostEndian() const |
| 587 | { |
| 588 | #if B_HOST_IS_LENDIAN |
| 589 | return e_ident[EI_DATA] == ELFDATA2LSB; |
| 590 | #elif B_HOST_IS_BENDIAN |
| 591 | return e_ident[EI_DATA] == ELFDATA2MSB; |
| 592 | #endif |
| 593 | } |
| 594 | |
| 595 | |
| 596 | inline bool |
| 597 | Elf64_Ehdr::IsHostEndian() const |
| 598 | { |
| 599 | #if B_HOST_IS_LENDIAN |
| 600 | return e_ident[EI_DATA] == ELFDATA2LSB; |
| 601 | #elif B_HOST_IS_BENDIAN |
| 602 | return e_ident[EI_DATA] == ELFDATA2MSB; |
| 603 | #endif |
| 604 | } |
| 605 | |
| 606 | |
| 607 | inline bool |
| 608 | Elf32_Phdr::IsReadWrite() const |
| 609 | { |
| 610 | return !(~p_flags & (PF_READ | PF_WRITE)); |
| 611 | } |
| 612 | |
| 613 | |
| 614 | inline bool |
| 615 | Elf32_Phdr::IsExecutable() const |
| 616 | { |
| 617 | return (p_flags & PF_EXECUTE) != 0; |
| 618 | } |
| 619 | |
| 620 | |
| 621 | inline bool |
| 622 | Elf64_Phdr::IsReadWrite() const |
| 623 | { |
| 624 | return !(~p_flags & (PF_READ | PF_WRITE)); |
| 625 | } |
| 626 | |
| 627 | |
| 628 | inline bool |
| 629 | Elf64_Phdr::IsExecutable() const |
| 630 | { |
| 631 | return (p_flags & PF_EXECUTE) != 0; |
| 632 | } |
| 633 | |
| 634 | |
| 635 | inline uint8 |
| 636 | Elf32_Sym::Bind() const |
| 637 | { |
| 638 | return ELF32_ST_BIND(st_info); |
| 639 | } |
| 640 | |
| 641 | |
| 642 | inline uint8 |
| 643 | Elf32_Sym::Type() const |
| 644 | { |
| 645 | return ELF32_ST_TYPE(st_info); |
| 646 | } |
| 647 | |
| 648 | |
| 649 | inline void |
| 650 | Elf32_Sym::SetInfo(uint8 bind, uint8 type) |
| 651 | { |
| 652 | st_info = ELF32_ST_INFO(bind, type); |
| 653 | } |
| 654 | |
| 655 | |
| 656 | inline uint8 |
| 657 | Elf64_Sym::Bind() const |
| 658 | { |
| 659 | return ELF64_ST_BIND(st_info); |
| 660 | } |
| 661 | |
| 662 | |
| 663 | inline uint8 |
| 664 | Elf64_Sym::Type() const |
| 665 | { |
| 666 | return ELF64_ST_TYPE(st_info); |
| 667 | } |
| 668 | |
| 669 | |
| 670 | inline void |
| 671 | Elf64_Sym::SetInfo(uint8 bind, uint8 type) |
| 672 | { |
| 673 | st_info = ELF64_ST_INFO(bind, type); |
| 674 | } |
| 675 | |
| 676 | |
| 677 | inline uint8 |
| 678 | Elf32_Rel::SymbolIndex() const |
| 679 | { |
| 680 | return ELF32_R_SYM(r_info); |
| 681 | } |
| 682 | |
| 683 | |
| 684 | inline uint8 |
| 685 | Elf32_Rel::Type() const |
| 686 | { |
| 687 | return ELF32_R_TYPE(r_info); |
| 688 | } |
| 689 | |
| 690 | |
| 691 | inline uint8 |
| 692 | Elf64_Rel::SymbolIndex() const |
| 693 | { |
| 694 | return ELF64_R_SYM(r_info); |
| 695 | } |
| 696 | |
| 697 | |
| 698 | inline uint8 |
| 699 | Elf64_Rel::Type() const |
| 700 | { |
| 701 | return ELF64_R_TYPE(r_info); |
| 702 | } |
| 703 | |
| 704 | #endif /* __cplusplus */ |
| 705 | |
| 706 | |
| 707 | #endif /* _ELF_H */ |