1 /* SPDX-License-Identifier: BSD-3-Clause */ 2 /* 3 * Copyright (c) 1995, 1996, 2001, 2002 4 * Erik Theisen. All rights reserved. 5 */ 6 7 /* This is the ELF ABI header file formerly known as "elf_abi.h" */ 8 9 #ifndef _ELF_H 10 #define _ELF_H 11 12 #ifndef __ASSEMBLY__ 13 #include "compiler.h" 14 15 /* This version doesn't work for 64-bit ABIs - Erik */ 16 17 /* These typedefs need to be handled better */ 18 typedef uint32_t Elf32_Addr; /* Unsigned program address */ 19 typedef uint32_t Elf32_Off; /* Unsigned file offset */ 20 typedef int32_t Elf32_Sword; /* Signed large integer */ 21 typedef uint32_t Elf32_Word; /* Unsigned large integer */ 22 typedef uint16_t Elf32_Half; /* Unsigned medium integer */ 23 24 /* 64-bit ELF base types */ 25 typedef uint64_t Elf64_Addr; 26 typedef uint16_t Elf64_Half; 27 typedef int16_t Elf64_SHalf; 28 typedef uint64_t Elf64_Off; 29 typedef int32_t Elf64_Sword; 30 typedef uint32_t Elf64_Word; 31 typedef uint64_t Elf64_Xword; 32 typedef int64_t Elf64_Sxword; 33 34 /* e_ident[] identification indexes */ 35 #define EI_MAG0 0 /* file ID */ 36 #define EI_MAG1 1 /* file ID */ 37 #define EI_MAG2 2 /* file ID */ 38 #define EI_MAG3 3 /* file ID */ 39 #define EI_CLASS 4 /* file class */ 40 #define EI_DATA 5 /* data encoding */ 41 #define EI_VERSION 6 /* ELF header version */ 42 #define EI_OSABI 7 /* OS/ABI specific ELF extensions */ 43 #define EI_ABIVERSION 8 /* ABI target version */ 44 #define EI_PAD 9 /* start of pad bytes */ 45 #define EI_NIDENT 16 /* Size of e_ident[] */ 46 47 /* e_ident[] magic number */ 48 #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ 49 #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ 50 #define ELFMAG2 'L' /* e_ident[EI_MAG2] */ 51 #define ELFMAG3 'F' /* e_ident[EI_MAG3] */ 52 #define ELFMAG "\177ELF" /* magic */ 53 #define SELFMAG 4 /* size of magic */ 54 55 /* e_ident[] file class */ 56 #define ELFCLASSNONE 0 /* invalid */ 57 #define ELFCLASS32 1 /* 32-bit objs */ 58 #define ELFCLASS64 2 /* 64-bit objs */ 59 #define ELFCLASSNUM 3 /* number of classes */ 60 61 /* e_ident[] data encoding */ 62 #define ELFDATANONE 0 /* invalid */ 63 #define ELFDATA2LSB 1 /* Little-Endian */ 64 #define ELFDATA2MSB 2 /* Big-Endian */ 65 #define ELFDATANUM 3 /* number of data encode defines */ 66 67 /* e_ident[] OS/ABI specific ELF extensions */ 68 #define ELFOSABI_NONE 0 /* No extension specified */ 69 #define ELFOSABI_HPUX 1 /* Hewlett-Packard HP-UX */ 70 #define ELFOSABI_NETBSD 2 /* NetBSD */ 71 #define ELFOSABI_LINUX 3 /* Linux */ 72 #define ELFOSABI_SOLARIS 6 /* Sun Solaris */ 73 #define ELFOSABI_AIX 7 /* AIX */ 74 #define ELFOSABI_IRIX 8 /* IRIX */ 75 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 76 #define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX */ 77 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 78 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 79 /* 64-255 Architecture-specific value range */ 80 81 /* e_ident[] ABI Version */ 82 #define ELFABIVERSION 0 83 84 /* e_ident */ 85 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ 86 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ 87 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ 88 (ehdr).e_ident[EI_MAG3] == ELFMAG3) 89 90 /* ELF Header */ 91 typedef struct { 92 unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ 93 Elf32_Half e_type; /* object file type */ 94 Elf32_Half e_machine; /* machine */ 95 Elf32_Word e_version; /* object file version */ 96 Elf32_Addr e_entry; /* virtual entry point */ 97 Elf32_Off e_phoff; /* program header table offset */ 98 Elf32_Off e_shoff; /* section header table offset */ 99 Elf32_Word e_flags; /* processor-specific flags */ 100 Elf32_Half e_ehsize; /* ELF header size */ 101 Elf32_Half e_phentsize; /* program header entry size */ 102 Elf32_Half e_phnum; /* number of program header entries */ 103 Elf32_Half e_shentsize; /* section header entry size */ 104 Elf32_Half e_shnum; /* number of section header entries */ 105 Elf32_Half e_shstrndx; /* section header table's "section 106 header string table" entry offset */ 107 } Elf32_Ehdr; 108 109 typedef struct { 110 unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ 111 Elf64_Half e_type; /* object file type */ 112 Elf64_Half e_machine; /* machine */ 113 Elf64_Word e_version; /* object file version */ 114 Elf64_Addr e_entry; /* virtual entry point */ 115 Elf64_Off e_phoff; /* program header table offset */ 116 Elf64_Off e_shoff; /* section header table offset */ 117 Elf64_Word e_flags; /* processor-specific flags */ 118 Elf64_Half e_ehsize; /* ELF header size */ 119 Elf64_Half e_phentsize; /* program header entry size */ 120 Elf64_Half e_phnum; /* number of program header entries */ 121 Elf64_Half e_shentsize; /* section header entry size */ 122 Elf64_Half e_shnum; /* number of section header entries */ 123 Elf64_Half e_shstrndx; /* section header table's "section 124 header string table" entry offset */ 125 } Elf64_Ehdr; 126 127 /* e_type */ 128 #define ET_NONE 0 /* No file type */ 129 #define ET_REL 1 /* relocatable file */ 130 #define ET_EXEC 2 /* executable file */ 131 #define ET_DYN 3 /* shared object file */ 132 #define ET_CORE 4 /* core file */ 133 #define ET_NUM 5 /* number of types */ 134 #define ET_LOOS 0xfe00 /* reserved range for operating */ 135 #define ET_HIOS 0xfeff /* system specific e_type */ 136 #define ET_LOPROC 0xff00 /* reserved range for processor */ 137 #define ET_HIPROC 0xffff /* specific e_type */ 138 139 /* e_machine */ 140 #define EM_NONE 0 /* No Machine */ 141 #define EM_M32 1 /* AT&T WE 32100 */ 142 #define EM_SPARC 2 /* SPARC */ 143 #define EM_386 3 /* Intel 80386 */ 144 #define EM_68K 4 /* Motorola 68000 */ 145 #define EM_88K 5 /* Motorola 88000 */ 146 #if 0 147 #define EM_486 6 /* RESERVED - was Intel 80486 */ 148 #endif 149 #define EM_860 7 /* Intel 80860 */ 150 #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ 151 #define EM_S370 9 /* IBM System/370 Processor */ 152 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ 153 #if 0 154 #define EM_SPARC64 11 /* RESERVED - was SPARC v9 155 64-bit unoffical */ 156 #endif 157 /* RESERVED 11-14 for future use */ 158 #define EM_PARISC 15 /* HPPA */ 159 /* RESERVED 16 for future use */ 160 #define EM_VPP500 17 /* Fujitsu VPP500 */ 161 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 162 #define EM_960 19 /* Intel 80960 */ 163 #define EM_PPC 20 /* PowerPC */ 164 #define EM_PPC64 21 /* 64-bit PowerPC */ 165 #define EM_S390 22 /* IBM System/390 Processor */ 166 /* RESERVED 23-35 for future use */ 167 #define EM_V800 36 /* NEC V800 */ 168 #define EM_FR20 37 /* Fujitsu FR20 */ 169 #define EM_RH32 38 /* TRW RH-32 */ 170 #define EM_RCE 39 /* Motorola RCE */ 171 #define EM_ARM 40 /* Advanced Risc Machines ARM */ 172 #define EM_ALPHA 41 /* Digital Alpha */ 173 #define EM_SH 42 /* Hitachi SH */ 174 #define EM_SPARCV9 43 /* SPARC Version 9 */ 175 #define EM_TRICORE 44 /* Siemens TriCore embedded processor */ 176 #define EM_ARC 45 /* Argonaut RISC Core */ 177 #define EM_H8_300 46 /* Hitachi H8/300 */ 178 #define EM_H8_300H 47 /* Hitachi H8/300H */ 179 #define EM_H8S 48 /* Hitachi H8S */ 180 #define EM_H8_500 49 /* Hitachi H8/500 */ 181 #define EM_IA_64 50 /* Intel Merced */ 182 #define EM_MIPS_X 51 /* Stanford MIPS-X */ 183 #define EM_COLDFIRE 52 /* Motorola Coldfire */ 184 #define EM_68HC12 53 /* Motorola M68HC12 */ 185 #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/ 186 #define EM_PCP 55 /* Siemens PCP */ 187 #define EM_NCPU 56 /* Sony nCPU embeeded RISC */ 188 #define EM_NDR1 57 /* Denso NDR1 microprocessor */ 189 #define EM_STARCORE 58 /* Motorola Start*Core processor */ 190 #define EM_ME16 59 /* Toyota ME16 processor */ 191 #define EM_ST100 60 /* STMicroelectronic ST100 processor */ 192 #define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/ 193 #define EM_X86_64 62 /* AMD x86-64 */ 194 #define EM_PDSP 63 /* Sony DSP Processor */ 195 /* RESERVED 64,65 for future use */ 196 #define EM_FX66 66 /* Siemens FX66 microcontroller */ 197 #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */ 198 #define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */ 199 #define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */ 200 #define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */ 201 #define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */ 202 #define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */ 203 #define EM_SVX 73 /* Silicon Graphics SVx */ 204 #define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */ 205 #define EM_VAX 75 /* Digital VAX */ 206 #define EM_CHRIS 76 /* Axis Communications embedded proc. */ 207 #define EM_JAVELIN 77 /* Infineon Technologies emb. proc. */ 208 #define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */ 209 #define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */ 210 #define EM_MMIX 80 /* Donald Knuth's edu 64-bit proc. */ 211 #define EM_HUANY 81 /* Harvard University mach-indep objs */ 212 #define EM_PRISM 82 /* SiTera Prism */ 213 #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ 214 #define EM_FR30 84 /* Fujitsu FR30 */ 215 #define EM_D10V 85 /* Mitsubishi DV10V */ 216 #define EM_D30V 86 /* Mitsubishi DV30V */ 217 #define EM_V850 87 /* NEC v850 */ 218 #define EM_M32R 88 /* Mitsubishi M32R */ 219 #define EM_MN10300 89 /* Matsushita MN10200 */ 220 #define EM_MN10200 90 /* Matsushita MN10200 */ 221 #define EM_PJ 91 /* picoJava */ 222 #define EM_NUM 92 /* number of machine types */ 223 224 /* Version */ 225 #define EV_NONE 0 /* Invalid */ 226 #define EV_CURRENT 1 /* Current */ 227 #define EV_NUM 2 /* number of versions */ 228 229 /* Section Header */ 230 typedef struct { 231 Elf32_Word sh_name; /* name - index into section header 232 string table section */ 233 Elf32_Word sh_type; /* type */ 234 Elf32_Word sh_flags; /* flags */ 235 Elf32_Addr sh_addr; /* address */ 236 Elf32_Off sh_offset; /* file offset */ 237 Elf32_Word sh_size; /* section size */ 238 Elf32_Word sh_link; /* section header table index link */ 239 Elf32_Word sh_info; /* extra information */ 240 Elf32_Word sh_addralign; /* address alignment */ 241 Elf32_Word sh_entsize; /* section entry size */ 242 } Elf32_Shdr; 243 244 typedef struct { 245 Elf64_Word sh_name; /* name - index into section header 246 string table section */ 247 Elf64_Word sh_type; /* type */ 248 Elf64_Xword sh_flags; /* flags */ 249 Elf64_Addr sh_addr; /* address */ 250 Elf64_Off sh_offset; /* file offset */ 251 Elf64_Xword sh_size; /* section size */ 252 Elf64_Word sh_link; /* section header table index link */ 253 Elf64_Word sh_info; /* extra information */ 254 Elf64_Xword sh_addralign; /* address alignment */ 255 Elf64_Xword sh_entsize; /* section entry size */ 256 } Elf64_Shdr; 257 258 /* Special Section Indexes */ 259 #define SHN_UNDEF 0 /* undefined */ 260 #define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ 261 #define SHN_LOPROC 0xff00 /* reserved range for processor */ 262 #define SHN_HIPROC 0xff1f /* specific section indexes */ 263 #define SHN_LOOS 0xff20 /* reserved range for operating */ 264 #define SHN_HIOS 0xff3f /* specific semantics */ 265 #define SHN_ABS 0xfff1 /* absolute value */ 266 #define SHN_COMMON 0xfff2 /* common symbol */ 267 #define SHN_XINDEX 0xffff /* Index is an extra table */ 268 #define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ 269 270 /* sh_type */ 271 #define SHT_NULL 0 /* inactive */ 272 #define SHT_PROGBITS 1 /* program defined information */ 273 #define SHT_SYMTAB 2 /* symbol table section */ 274 #define SHT_STRTAB 3 /* string table section */ 275 #define SHT_RELA 4 /* relocation section with addends*/ 276 #define SHT_HASH 5 /* symbol hash table section */ 277 #define SHT_DYNAMIC 6 /* dynamic section */ 278 #define SHT_NOTE 7 /* note section */ 279 #define SHT_NOBITS 8 /* no space section */ 280 #define SHT_REL 9 /* relation section without addends */ 281 #define SHT_SHLIB 10 /* reserved - purpose unknown */ 282 #define SHT_DYNSYM 11 /* dynamic symbol table section */ 283 #define SHT_INIT_ARRAY 14 /* Array of constructors */ 284 #define SHT_FINI_ARRAY 15 /* Array of destructors */ 285 #define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ 286 #define SHT_GROUP 17 /* Section group */ 287 #define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ 288 #define SHT_NUM 19 /* number of section types */ 289 #define SHT_LOOS 0x60000000 /* Start OS-specific */ 290 #define SHT_HIOS 0x6fffffff /* End OS-specific */ 291 #define SHT_LOPROC 0x70000000 /* reserved range for processor */ 292 #define SHT_HIPROC 0x7fffffff /* specific section header types */ 293 #define SHT_LOUSER 0x80000000 /* reserved range for application */ 294 #define SHT_HIUSER 0xffffffff /* specific indexes */ 295 296 /* Section names */ 297 #define ELF_BSS ".bss" /* uninitialized data */ 298 #define ELF_COMMENT ".comment" /* version control information */ 299 #define ELF_DATA ".data" /* initialized data */ 300 #define ELF_DATA1 ".data1" /* initialized data */ 301 #define ELF_DEBUG ".debug" /* debug */ 302 #define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ 303 #define ELF_DYNSTR ".dynstr" /* dynamic string table */ 304 #define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ 305 #define ELF_FINI ".fini" /* termination code */ 306 #define ELF_FINI_ARRAY ".fini_array" /* Array of destructors */ 307 #define ELF_GOT ".got" /* global offset table */ 308 #define ELF_HASH ".hash" /* symbol hash table */ 309 #define ELF_INIT ".init" /* initialization code */ 310 #define ELF_INIT_ARRAY ".init_array" /* Array of constuctors */ 311 #define ELF_INTERP ".interp" /* Pathname of program interpreter */ 312 #define ELF_LINE ".line" /* Symbolic line numnber information */ 313 #define ELF_NOTE ".note" /* Contains note section */ 314 #define ELF_PLT ".plt" /* Procedure linkage table */ 315 #define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */ 316 #define ELF_REL_DATA ".rel.data" /* relocation data */ 317 #define ELF_REL_FINI ".rel.fini" /* relocation termination code */ 318 #define ELF_REL_INIT ".rel.init" /* relocation initialization code */ 319 #define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ 320 #define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ 321 #define ELF_REL_TEXT ".rel.text" /* relocation code */ 322 #define ELF_RODATA ".rodata" /* read-only data */ 323 #define ELF_RODATA1 ".rodata1" /* read-only data */ 324 #define ELF_SHSTRTAB ".shstrtab" /* section header string table */ 325 #define ELF_STRTAB ".strtab" /* string table */ 326 #define ELF_SYMTAB ".symtab" /* symbol table */ 327 #define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */ 328 #define ELF_TBSS ".tbss" /* thread local uninit data */ 329 #define ELF_TDATA ".tdata" /* thread local init data */ 330 #define ELF_TDATA1 ".tdata1" /* thread local init data */ 331 #define ELF_TEXT ".text" /* code */ 332 333 /* Section Attribute Flags - sh_flags */ 334 #define SHF_WRITE 0x1 /* Writable */ 335 #define SHF_ALLOC 0x2 /* occupies memory */ 336 #define SHF_EXECINSTR 0x4 /* executable */ 337 #define SHF_MERGE 0x10 /* Might be merged */ 338 #define SHF_STRINGS 0x20 /* Contains NULL terminated strings */ 339 #define SHF_INFO_LINK 0x40 /* sh_info contains SHT index */ 340 #define SHF_LINK_ORDER 0x80 /* Preserve order after combining*/ 341 #define SHF_OS_NONCONFORMING 0x100 /* Non-standard OS specific handling */ 342 #define SHF_GROUP 0x200 /* Member of section group */ 343 #define SHF_TLS 0x400 /* Thread local storage */ 344 #define SHF_MASKOS 0x0ff00000 /* OS specific */ 345 #define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ 346 /* specific section attributes */ 347 348 /* Section Group Flags */ 349 #define GRP_COMDAT 0x1 /* COMDAT group */ 350 #define GRP_MASKOS 0x0ff00000 /* Mask OS specific flags */ 351 #define GRP_MASKPROC 0xf0000000 /* Mask processor specific flags */ 352 353 /* Symbol Table Entry */ 354 typedef struct { 355 Elf32_Word st_name; /* name - index into string table */ 356 Elf32_Addr st_value; /* symbol value */ 357 Elf32_Word st_size; /* symbol size */ 358 unsigned char st_info; /* type and binding */ 359 unsigned char st_other; /* 0 - no defined meaning */ 360 Elf32_Half st_shndx; /* section header index */ 361 } Elf32_Sym; 362 363 /* Symbol table index */ 364 #define STN_UNDEF 0 /* undefined */ 365 366 /* Extract symbol info - st_info */ 367 #define ELF32_ST_BIND(x) ((x) >> 4) 368 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) 369 #define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) 370 #define ELF32_ST_VISIBILITY(x) ((x) & 0x3) 371 372 /* Symbol Binding - ELF32_ST_BIND - st_info */ 373 #define STB_LOCAL 0 /* Local symbol */ 374 #define STB_GLOBAL 1 /* Global symbol */ 375 #define STB_WEAK 2 /* like global - lower precedence */ 376 #define STB_NUM 3 /* number of symbol bindings */ 377 #define STB_LOOS 10 /* reserved range for operating */ 378 #define STB_HIOS 12 /* system specific symbol bindings */ 379 #define STB_LOPROC 13 /* reserved range for processor */ 380 #define STB_HIPROC 15 /* specific symbol bindings */ 381 382 /* Symbol type - ELF32_ST_TYPE - st_info */ 383 #define STT_NOTYPE 0 /* not specified */ 384 #define STT_OBJECT 1 /* data object */ 385 #define STT_FUNC 2 /* function */ 386 #define STT_SECTION 3 /* section */ 387 #define STT_FILE 4 /* file */ 388 #define STT_NUM 5 /* number of symbol types */ 389 #define STT_TLS 6 /* Thread local storage symbol */ 390 #define STT_LOOS 10 /* reserved range for operating */ 391 #define STT_HIOS 12 /* system specific symbol types */ 392 #define STT_LOPROC 13 /* reserved range for processor */ 393 #define STT_HIPROC 15 /* specific symbol types */ 394 395 /* Symbol visibility - ELF32_ST_VISIBILITY - st_other */ 396 #define STV_DEFAULT 0 /* Normal visibility rules */ 397 #define STV_INTERNAL 1 /* Processor specific hidden class */ 398 #define STV_HIDDEN 2 /* Symbol unavailable in other mods */ 399 #define STV_PROTECTED 3 /* Not preemptible, not exported */ 400 401 /* Relocation entry with implicit addend */ 402 typedef struct { 403 Elf32_Addr r_offset; /* offset of relocation */ 404 Elf32_Word r_info; /* symbol table index and type */ 405 } Elf32_Rel; 406 407 /* Relocation entry with explicit addend */ 408 typedef struct { 409 Elf32_Addr r_offset; /* offset of relocation */ 410 Elf32_Word r_info; /* symbol table index and type */ 411 Elf32_Sword r_addend; 412 } Elf32_Rela; 413 414 typedef struct { 415 Elf64_Addr r_offset; /* Location at which to apply the action */ 416 Elf64_Xword r_info; /* index and type of relocation */ 417 } Elf64_Rel; 418 419 typedef struct { 420 Elf64_Addr r_offset; /* Location at which to apply the action */ 421 Elf64_Xword r_info; /* index and type of relocation */ 422 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 423 } Elf64_Rela; 424 425 /* Extract relocation info - r_info */ 426 #define ELF32_R_SYM(i) ((i) >> 8) 427 #define ELF32_R_TYPE(i) ((unsigned char) (i)) 428 #define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) 429 430 /* Program Header */ 431 typedef struct { 432 Elf32_Word p_type; /* segment type */ 433 Elf32_Off p_offset; /* segment offset */ 434 Elf32_Addr p_vaddr; /* virtual address of segment */ 435 Elf32_Addr p_paddr; /* physical address of segment */ 436 Elf32_Word p_filesz; /* number of bytes in file for seg */ 437 Elf32_Word p_memsz; /* number of bytes in mem. for seg */ 438 Elf32_Word p_flags; /* flags */ 439 Elf32_Word p_align; /* memory alignment */ 440 } Elf32_Phdr; 441 442 typedef struct { 443 Elf64_Word p_type; /* segment type */ 444 Elf64_Word p_flags; /* flags */ 445 Elf64_Off p_offset; /* segment offset */ 446 Elf64_Addr p_vaddr; /* virtual address of segment */ 447 Elf64_Addr p_paddr; /* physical address of segment */ 448 Elf64_Xword p_filesz; /* number of bytes in file for seg */ 449 Elf64_Xword p_memsz; /* number of bytes in mem. for seg */ 450 Elf64_Xword p_align; /* memory alignment */ 451 } Elf64_Phdr; 452 453 /* Segment types - p_type */ 454 #define PT_NULL 0 /* unused */ 455 #define PT_LOAD 1 /* loadable segment */ 456 #define PT_DYNAMIC 2 /* dynamic linking section */ 457 #define PT_INTERP 3 /* the RTLD */ 458 #define PT_NOTE 4 /* auxiliary information */ 459 #define PT_SHLIB 5 /* reserved - purpose undefined */ 460 #define PT_PHDR 6 /* program header */ 461 #define PT_TLS 7 /* Thread local storage template */ 462 #define PT_NUM 8 /* Number of segment types */ 463 #define PT_LOOS 0x60000000 /* reserved range for operating */ 464 #define PT_HIOS 0x6fffffff /* system specific segment types */ 465 #define PT_LOPROC 0x70000000 /* reserved range for processor */ 466 #define PT_HIPROC 0x7fffffff /* specific segment types */ 467 468 /* Segment flags - p_flags */ 469 #define PF_X 0x1 /* Executable */ 470 #define PF_W 0x2 /* Writable */ 471 #define PF_R 0x4 /* Readable */ 472 #define PF_MASKOS 0x0ff00000 /* OS specific segment flags */ 473 #define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ 474 /* specific segment flags */ 475 /* Dynamic structure */ 476 typedef struct { 477 Elf32_Sword d_tag; /* controls meaning of d_val */ 478 union { 479 Elf32_Word d_val; /* Multiple meanings - see d_tag */ 480 Elf32_Addr d_ptr; /* program virtual address */ 481 } d_un; 482 } Elf32_Dyn; 483 484 extern Elf32_Dyn _DYNAMIC[]; 485 486 typedef struct { 487 Elf64_Sxword d_tag; /* entry tag value */ 488 union { 489 Elf64_Xword d_val; 490 Elf64_Addr d_ptr; 491 } d_un; 492 } Elf64_Dyn; 493 494 #define ELF64_R_SYM(i) ((i) >> 32) 495 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) 496 497 /* Dynamic Array Tags - d_tag */ 498 #define DT_NULL 0 /* marks end of _DYNAMIC array */ 499 #define DT_NEEDED 1 /* string table offset of needed lib */ 500 #define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ 501 #define DT_PLTGOT 3 /* address PLT/GOT */ 502 #define DT_HASH 4 /* address of symbol hash table */ 503 #define DT_STRTAB 5 /* address of string table */ 504 #define DT_SYMTAB 6 /* address of symbol table */ 505 #define DT_RELA 7 /* address of relocation table */ 506 #define DT_RELASZ 8 /* size of relocation table */ 507 #define DT_RELAENT 9 /* size of relocation entry */ 508 #define DT_STRSZ 10 /* size of string table */ 509 #define DT_SYMENT 11 /* size of symbol table entry */ 510 #define DT_INIT 12 /* address of initialization func */ 511 #define DT_FINI 13 /* address of termination function */ 512 #define DT_SONAME 14 /* string table offset of shared obj */ 513 #define DT_RPATH 15 /* string table offset of library 514 search path */ 515 #define DT_SYMBOLIC 16 /* start sym search in shared obj */ 516 #define DT_REL 17 /* address of rel. tbl. w addends */ 517 #define DT_RELSZ 18 /* size of DT_REL relocation table */ 518 #define DT_RELENT 19 /* size of DT_REL relocation entry */ 519 #define DT_PLTREL 20 /* PLT referenced relocation entry */ 520 #define DT_DEBUG 21 /* bugger */ 521 #define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ 522 #define DT_JMPREL 23 /* add. of PLT's relocation entries */ 523 #define DT_BIND_NOW 24 /* Process relocations of object */ 524 #define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ 525 #define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ 526 #define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ 527 #define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ 528 #define DT_RUNPATH 29 /* Library search path */ 529 #define DT_FLAGS 30 /* Flags for the object being loaded */ 530 #define DT_ENCODING 32 /* Start of encoded range */ 531 #define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ 532 #define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ 533 #define DT_NUM 34 /* Number used */ 534 #define DT_LOOS 0x60000000 /* reserved range for OS */ 535 #define DT_HIOS 0x6fffffff /* specific dynamic array tags */ 536 #define DT_LOPROC 0x70000000 /* reserved range for processor */ 537 #define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ 538 539 /* Dynamic Tag Flags - d_un.d_val */ 540 #define DF_ORIGIN 0x01 /* Object may use DF_ORIGIN */ 541 #define DF_SYMBOLIC 0x02 /* Symbol resolutions starts here */ 542 #define DF_TEXTREL 0x04 /* Object contains text relocations */ 543 #define DF_BIND_NOW 0x08 /* No lazy binding for this object */ 544 #define DF_STATIC_TLS 0x10 /* Static thread local storage */ 545 546 /* Standard ELF hashing function */ 547 unsigned long elf_hash(const unsigned char *name); 548 549 #define ELF_TARG_VER 1 /* The ver for which this code is intended */ 550 551 #endif /* __ASSEMBLER */ 552 553 /* ELF register definitions */ 554 #define R_386_NONE 0 555 #define R_386_32 1 556 #define R_386_PC32 2 557 #define R_386_GOT32 3 558 #define R_386_PLT32 4 559 #define R_386_COPY 5 560 #define R_386_GLOB_DAT 6 561 #define R_386_JMP_SLOT 7 562 #define R_386_RELATIVE 8 563 #define R_386_GOTOFF 9 564 #define R_386_GOTPC 10 565 #define R_386_NUM 11 566 567 /* x86-64 relocation types */ 568 #define R_X86_64_NONE 0 /* No reloc */ 569 #define R_X86_64_64 1 /* Direct 64 bit */ 570 #define R_X86_64_PC32 2 /* PC relative 32 bit signed */ 571 #define R_X86_64_GOT32 3 /* 32 bit GOT entry */ 572 #define R_X86_64_PLT32 4 /* 32 bit PLT address */ 573 #define R_X86_64_COPY 5 /* Copy symbol at runtime */ 574 #define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ 575 #define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ 576 #define R_X86_64_RELATIVE 8 /* Adjust by program base */ 577 /* 32 bit signed pc relative offset to GOT */ 578 #define R_X86_64_GOTPCREL 9 579 #define R_X86_64_32 10 /* Direct 32 bit zero extended */ 580 #define R_X86_64_32S 11 /* Direct 32 bit sign extended */ 581 #define R_X86_64_16 12 /* Direct 16 bit zero extended */ 582 #define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */ 583 #define R_X86_64_8 14 /* Direct 8 bit sign extended */ 584 #define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */ 585 586 #define R_X86_64_NUM 16 587 588 /* 589 * XXX - PowerPC defines really don't belong in here, 590 * but we'll put them in for simplicity. 591 */ 592 593 /* Values for Elf32/64_Ehdr.e_flags */ 594 #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag */ 595 596 #define EF_PPC64_ELFV1_ABI 0x00000001 597 #define EF_PPC64_ELFV2_ABI 0x00000002 598 599 /* Cygnus local bits below */ 600 #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag*/ 601 #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib 602 flag */ 603 604 /* PowerPC relocations defined by the ABIs */ 605 #define R_PPC_NONE 0 606 #define R_PPC_ADDR32 1 /* 32bit absolute address */ 607 #define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored */ 608 #define R_PPC_ADDR16 3 /* 16bit absolute address */ 609 #define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */ 610 #define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */ 611 #define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */ 612 #define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */ 613 #define R_PPC_ADDR14_BRTAKEN 8 614 #define R_PPC_ADDR14_BRNTAKEN 9 615 #define R_PPC_REL24 10 /* PC relative 26 bit */ 616 #define R_PPC_REL14 11 /* PC relative 16 bit */ 617 #define R_PPC_REL14_BRTAKEN 12 618 #define R_PPC_REL14_BRNTAKEN 13 619 #define R_PPC_GOT16 14 620 #define R_PPC_GOT16_LO 15 621 #define R_PPC_GOT16_HI 16 622 #define R_PPC_GOT16_HA 17 623 #define R_PPC_PLTREL24 18 624 #define R_PPC_COPY 19 625 #define R_PPC_GLOB_DAT 20 626 #define R_PPC_JMP_SLOT 21 627 #define R_PPC_RELATIVE 22 628 #define R_PPC_LOCAL24PC 23 629 #define R_PPC_UADDR32 24 630 #define R_PPC_UADDR16 25 631 #define R_PPC_REL32 26 632 #define R_PPC_PLT32 27 633 #define R_PPC_PLTREL32 28 634 #define R_PPC_PLT16_LO 29 635 #define R_PPC_PLT16_HI 30 636 #define R_PPC_PLT16_HA 31 637 #define R_PPC_SDAREL16 32 638 #define R_PPC_SECTOFF 33 639 #define R_PPC_SECTOFF_LO 34 640 #define R_PPC_SECTOFF_HI 35 641 #define R_PPC_SECTOFF_HA 36 642 /* Keep this the last entry */ 643 #define R_PPC_NUM 37 644 645 /* 646 * The remaining relocs are from the Embedded ELF ABI, and are not 647 * in the SVR4 ELF ABI. 648 */ 649 #define R_PPC_EMB_NADDR32 101 650 #define R_PPC_EMB_NADDR16 102 651 #define R_PPC_EMB_NADDR16_LO 103 652 #define R_PPC_EMB_NADDR16_HI 104 653 #define R_PPC_EMB_NADDR16_HA 105 654 #define R_PPC_EMB_SDAI16 106 655 #define R_PPC_EMB_SDA2I16 107 656 #define R_PPC_EMB_SDA2REL 108 657 #define R_PPC_EMB_SDA21 109 /* 16 bit offset in SDA */ 658 #define R_PPC_EMB_MRKREF 110 659 #define R_PPC_EMB_RELSEC16 111 660 #define R_PPC_EMB_RELST_LO 112 661 #define R_PPC_EMB_RELST_HI 113 662 #define R_PPC_EMB_RELST_HA 114 663 #define R_PPC_EMB_BIT_FLD 115 664 #define R_PPC_EMB_RELSDA 116 /* 16 bit relative offset in SDA */ 665 666 /* Diab tool relocations */ 667 #define R_PPC_DIAB_SDA21_LO 180 /* like EMB_SDA21, but lower 16 bit */ 668 #define R_PPC_DIAB_SDA21_HI 181 /* like EMB_SDA21, but high 16 bit */ 669 #define R_PPC_DIAB_SDA21_HA 182 /* like EMB_SDA21, adjusted high 16 */ 670 #define R_PPC_DIAB_RELSDA_LO 183 /* like EMB_RELSDA, but lower 16 bit */ 671 #define R_PPC_DIAB_RELSDA_HI 184 /* like EMB_RELSDA, but high 16 bit */ 672 #define R_PPC_DIAB_RELSDA_HA 185 /* like EMB_RELSDA, adjusted high 16 */ 673 674 /* 675 * This is a phony reloc to handle any old fashioned TOC16 references 676 * that may still be in object files. 677 */ 678 #define R_PPC_TOC16 255 679 680 /* ARM relocs */ 681 #define R_ARM_NONE 0 /* No reloc */ 682 #define R_ARM_RELATIVE 23 /* Adjust by program base */ 683 684 /* AArch64 relocs */ 685 #define R_AARCH64_NONE 0 /* No relocation */ 686 #define R_AARCH64_RELATIVE 1027 /* Adjust by program base */ 687 688 /* RISC-V relocations */ 689 #define R_RISCV_32 1 690 #define R_RISCV_64 2 691 #define R_RISCV_RELATIVE 3 692 693 #ifndef __ASSEMBLY__ 694 int valid_elf_image(unsigned long addr); 695 unsigned long load_elf64_image_phdr(unsigned long addr); 696 unsigned long load_elf64_image_shdr(unsigned long addr); 697 unsigned long load_elf_image_phdr(unsigned long addr); 698 unsigned long load_elf_image_shdr(unsigned long addr); 699 #endif 700 701 #endif /* _ELF_H */ 702