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 /* Flag param bits for bootelf() function */ 16 typedef struct { 17 unsigned phdr : 1; /* load via program (not section) headers */ 18 unsigned autostart : 1; /* Start ELF after loading */ 19 } Bootelf_flags; 20 21 /* This version doesn't work for 64-bit ABIs - Erik */ 22 23 /* These typedefs need to be handled better */ 24 typedef uint32_t Elf32_Addr; /* Unsigned program address */ 25 typedef uint32_t Elf32_Off; /* Unsigned file offset */ 26 typedef int32_t Elf32_Sword; /* Signed large integer */ 27 typedef uint32_t Elf32_Word; /* Unsigned large integer */ 28 typedef uint16_t Elf32_Half; /* Unsigned medium integer */ 29 30 /* 64-bit ELF base types */ 31 typedef uint64_t Elf64_Addr; 32 typedef uint16_t Elf64_Half; 33 typedef int16_t Elf64_SHalf; 34 typedef uint64_t Elf64_Off; 35 typedef int32_t Elf64_Sword; 36 typedef uint32_t Elf64_Word; 37 typedef uint64_t Elf64_Xword; 38 typedef int64_t Elf64_Sxword; 39 40 /* e_ident[] identification indexes */ 41 #define EI_MAG0 0 /* file ID */ 42 #define EI_MAG1 1 /* file ID */ 43 #define EI_MAG2 2 /* file ID */ 44 #define EI_MAG3 3 /* file ID */ 45 #define EI_CLASS 4 /* file class */ 46 #define EI_DATA 5 /* data encoding */ 47 #define EI_VERSION 6 /* ELF header version */ 48 #define EI_OSABI 7 /* OS/ABI specific ELF extensions */ 49 #define EI_ABIVERSION 8 /* ABI target version */ 50 #define EI_PAD 9 /* start of pad bytes */ 51 #define EI_NIDENT 16 /* Size of e_ident[] */ 52 53 /* e_ident[] magic number */ 54 #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ 55 #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ 56 #define ELFMAG2 'L' /* e_ident[EI_MAG2] */ 57 #define ELFMAG3 'F' /* e_ident[EI_MAG3] */ 58 #define ELFMAG "\177ELF" /* magic */ 59 #define SELFMAG 4 /* size of magic */ 60 61 /* e_ident[] file class */ 62 #define ELFCLASSNONE 0 /* invalid */ 63 #define ELFCLASS32 1 /* 32-bit objs */ 64 #define ELFCLASS64 2 /* 64-bit objs */ 65 #define ELFCLASSNUM 3 /* number of classes */ 66 67 /* e_ident[] data encoding */ 68 #define ELFDATANONE 0 /* invalid */ 69 #define ELFDATA2LSB 1 /* Little-Endian */ 70 #define ELFDATA2MSB 2 /* Big-Endian */ 71 #define ELFDATANUM 3 /* number of data encode defines */ 72 73 /* e_ident[] OS/ABI specific ELF extensions */ 74 #define ELFOSABI_NONE 0 /* No extension specified */ 75 #define ELFOSABI_HPUX 1 /* Hewlett-Packard HP-UX */ 76 #define ELFOSABI_NETBSD 2 /* NetBSD */ 77 #define ELFOSABI_LINUX 3 /* Linux */ 78 #define ELFOSABI_SOLARIS 6 /* Sun Solaris */ 79 #define ELFOSABI_AIX 7 /* AIX */ 80 #define ELFOSABI_IRIX 8 /* IRIX */ 81 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 82 #define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX */ 83 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 84 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 85 /* 64-255 Architecture-specific value range */ 86 87 /* e_ident[] ABI Version */ 88 #define ELFABIVERSION 0 89 90 /* e_ident */ 91 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ 92 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ 93 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ 94 (ehdr).e_ident[EI_MAG3] == ELFMAG3) 95 96 /* ELF Header */ 97 typedef struct { 98 unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ 99 Elf32_Half e_type; /* object file type */ 100 Elf32_Half e_machine; /* machine */ 101 Elf32_Word e_version; /* object file version */ 102 Elf32_Addr e_entry; /* virtual entry point */ 103 Elf32_Off e_phoff; /* program header table offset */ 104 Elf32_Off e_shoff; /* section header table offset */ 105 Elf32_Word e_flags; /* processor-specific flags */ 106 Elf32_Half e_ehsize; /* ELF header size */ 107 Elf32_Half e_phentsize; /* program header entry size */ 108 Elf32_Half e_phnum; /* number of program header entries */ 109 Elf32_Half e_shentsize; /* section header entry size */ 110 Elf32_Half e_shnum; /* number of section header entries */ 111 Elf32_Half e_shstrndx; /* section header table's "section 112 header string table" entry offset */ 113 } Elf32_Ehdr; 114 115 typedef struct { 116 unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ 117 Elf64_Half e_type; /* object file type */ 118 Elf64_Half e_machine; /* machine */ 119 Elf64_Word e_version; /* object file version */ 120 Elf64_Addr e_entry; /* virtual entry point */ 121 Elf64_Off e_phoff; /* program header table offset */ 122 Elf64_Off e_shoff; /* section header table offset */ 123 Elf64_Word e_flags; /* processor-specific flags */ 124 Elf64_Half e_ehsize; /* ELF header size */ 125 Elf64_Half e_phentsize; /* program header entry size */ 126 Elf64_Half e_phnum; /* number of program header entries */ 127 Elf64_Half e_shentsize; /* section header entry size */ 128 Elf64_Half e_shnum; /* number of section header entries */ 129 Elf64_Half e_shstrndx; /* section header table's "section 130 header string table" entry offset */ 131 } Elf64_Ehdr; 132 133 /* e_type */ 134 #define ET_NONE 0 /* No file type */ 135 #define ET_REL 1 /* relocatable file */ 136 #define ET_EXEC 2 /* executable file */ 137 #define ET_DYN 3 /* shared object file */ 138 #define ET_CORE 4 /* core file */ 139 #define ET_NUM 5 /* number of types */ 140 #define ET_LOOS 0xfe00 /* reserved range for operating */ 141 #define ET_HIOS 0xfeff /* system specific e_type */ 142 #define ET_LOPROC 0xff00 /* reserved range for processor */ 143 #define ET_HIPROC 0xffff /* specific e_type */ 144 145 /* e_machine */ 146 #define EM_NONE 0 /* No Machine */ 147 #define EM_M32 1 /* AT&T WE 32100 */ 148 #define EM_SPARC 2 /* SPARC */ 149 #define EM_386 3 /* Intel 80386 */ 150 #define EM_68K 4 /* Motorola 68000 */ 151 #define EM_88K 5 /* Motorola 88000 */ 152 #if 0 153 #define EM_486 6 /* RESERVED - was Intel 80486 */ 154 #endif 155 #define EM_860 7 /* Intel 80860 */ 156 #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ 157 #define EM_S370 9 /* IBM System/370 Processor */ 158 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ 159 #if 0 160 #define EM_SPARC64 11 /* RESERVED - was SPARC v9 161 64-bit unoffical */ 162 #endif 163 /* RESERVED 11-14 for future use */ 164 #define EM_PARISC 15 /* HPPA */ 165 /* RESERVED 16 for future use */ 166 #define EM_VPP500 17 /* Fujitsu VPP500 */ 167 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 168 #define EM_960 19 /* Intel 80960 */ 169 #define EM_PPC 20 /* PowerPC */ 170 #define EM_PPC64 21 /* 64-bit PowerPC */ 171 #define EM_S390 22 /* IBM System/390 Processor */ 172 /* RESERVED 23-35 for future use */ 173 #define EM_V800 36 /* NEC V800 */ 174 #define EM_FR20 37 /* Fujitsu FR20 */ 175 #define EM_RH32 38 /* TRW RH-32 */ 176 #define EM_RCE 39 /* Motorola RCE */ 177 #define EM_ARM 40 /* Advanced Risc Machines ARM */ 178 #define EM_ALPHA 41 /* Digital Alpha */ 179 #define EM_SH 42 /* Hitachi SH */ 180 #define EM_SPARCV9 43 /* SPARC Version 9 */ 181 #define EM_TRICORE 44 /* Siemens TriCore embedded processor */ 182 #define EM_ARC 45 /* Argonaut RISC Core */ 183 #define EM_H8_300 46 /* Hitachi H8/300 */ 184 #define EM_H8_300H 47 /* Hitachi H8/300H */ 185 #define EM_H8S 48 /* Hitachi H8S */ 186 #define EM_H8_500 49 /* Hitachi H8/500 */ 187 #define EM_IA_64 50 /* Intel Merced */ 188 #define EM_MIPS_X 51 /* Stanford MIPS-X */ 189 #define EM_COLDFIRE 52 /* Motorola Coldfire */ 190 #define EM_68HC12 53 /* Motorola M68HC12 */ 191 #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/ 192 #define EM_PCP 55 /* Siemens PCP */ 193 #define EM_NCPU 56 /* Sony nCPU embeeded RISC */ 194 #define EM_NDR1 57 /* Denso NDR1 microprocessor */ 195 #define EM_STARCORE 58 /* Motorola Start*Core processor */ 196 #define EM_ME16 59 /* Toyota ME16 processor */ 197 #define EM_ST100 60 /* STMicroelectronics ST100 processor */ 198 #define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/ 199 #define EM_X86_64 62 /* AMD x86-64 */ 200 #define EM_PDSP 63 /* Sony DSP Processor */ 201 /* RESERVED 64,65 for future use */ 202 #define EM_FX66 66 /* Siemens FX66 microcontroller */ 203 #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */ 204 #define EM_ST7 68 /* STMicroelectronics ST7 8 bit mc */ 205 #define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */ 206 #define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */ 207 #define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */ 208 #define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */ 209 #define EM_SVX 73 /* Silicon Graphics SVx */ 210 #define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */ 211 #define EM_VAX 75 /* Digital VAX */ 212 #define EM_CHRIS 76 /* Axis Communications embedded proc. */ 213 #define EM_JAVELIN 77 /* Infineon Technologies emb. proc. */ 214 #define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */ 215 #define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */ 216 #define EM_MMIX 80 /* Donald Knuth's edu 64-bit proc. */ 217 #define EM_HUANY 81 /* Harvard University mach-indep objs */ 218 #define EM_PRISM 82 /* SiTera Prism */ 219 #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ 220 #define EM_FR30 84 /* Fujitsu FR30 */ 221 #define EM_D10V 85 /* Mitsubishi DV10V */ 222 #define EM_D30V 86 /* Mitsubishi DV30V */ 223 #define EM_V850 87 /* NEC v850 */ 224 #define EM_M32R 88 /* Mitsubishi M32R */ 225 #define EM_MN10300 89 /* Matsushita MN10200 */ 226 #define EM_MN10200 90 /* Matsushita MN10200 */ 227 #define EM_PJ 91 /* picoJava */ 228 #define EM_NUM 92 /* number of machine types */ 229 230 /* Version */ 231 #define EV_NONE 0 /* Invalid */ 232 #define EV_CURRENT 1 /* Current */ 233 #define EV_NUM 2 /* number of versions */ 234 235 /* Section Header */ 236 typedef struct { 237 Elf32_Word sh_name; /* name - index into section header 238 string table section */ 239 Elf32_Word sh_type; /* type */ 240 Elf32_Word sh_flags; /* flags */ 241 Elf32_Addr sh_addr; /* address */ 242 Elf32_Off sh_offset; /* file offset */ 243 Elf32_Word sh_size; /* section size */ 244 Elf32_Word sh_link; /* section header table index link */ 245 Elf32_Word sh_info; /* extra information */ 246 Elf32_Word sh_addralign; /* address alignment */ 247 Elf32_Word sh_entsize; /* section entry size */ 248 } Elf32_Shdr; 249 250 typedef struct { 251 Elf64_Word sh_name; /* name - index into section header 252 string table section */ 253 Elf64_Word sh_type; /* type */ 254 Elf64_Xword sh_flags; /* flags */ 255 Elf64_Addr sh_addr; /* address */ 256 Elf64_Off sh_offset; /* file offset */ 257 Elf64_Xword sh_size; /* section size */ 258 Elf64_Word sh_link; /* section header table index link */ 259 Elf64_Word sh_info; /* extra information */ 260 Elf64_Xword sh_addralign; /* address alignment */ 261 Elf64_Xword sh_entsize; /* section entry size */ 262 } Elf64_Shdr; 263 264 /* Special Section Indexes */ 265 #define SHN_UNDEF 0 /* undefined */ 266 #define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ 267 #define SHN_LOPROC 0xff00 /* reserved range for processor */ 268 #define SHN_HIPROC 0xff1f /* specific section indexes */ 269 #define SHN_LOOS 0xff20 /* reserved range for operating */ 270 #define SHN_HIOS 0xff3f /* specific semantics */ 271 #define SHN_ABS 0xfff1 /* absolute value */ 272 #define SHN_COMMON 0xfff2 /* common symbol */ 273 #define SHN_XINDEX 0xffff /* Index is an extra table */ 274 #define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ 275 276 /* sh_type */ 277 #define SHT_NULL 0 /* inactive */ 278 #define SHT_PROGBITS 1 /* program defined information */ 279 #define SHT_SYMTAB 2 /* symbol table section */ 280 #define SHT_STRTAB 3 /* string table section */ 281 #define SHT_RELA 4 /* relocation section with addends*/ 282 #define SHT_HASH 5 /* symbol hash table section */ 283 #define SHT_DYNAMIC 6 /* dynamic section */ 284 #define SHT_NOTE 7 /* note section */ 285 #define SHT_NOBITS 8 /* no space section */ 286 #define SHT_REL 9 /* relation section without addends */ 287 #define SHT_SHLIB 10 /* reserved - purpose unknown */ 288 #define SHT_DYNSYM 11 /* dynamic symbol table section */ 289 #define SHT_INIT_ARRAY 14 /* Array of constructors */ 290 #define SHT_FINI_ARRAY 15 /* Array of destructors */ 291 #define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ 292 #define SHT_GROUP 17 /* Section group */ 293 #define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ 294 #define SHT_NUM 19 /* number of section types */ 295 #define SHT_LOOS 0x60000000 /* Start OS-specific */ 296 #define SHT_HIOS 0x6fffffff /* End OS-specific */ 297 #define SHT_LOPROC 0x70000000 /* reserved range for processor */ 298 #define SHT_HIPROC 0x7fffffff /* specific section header types */ 299 #define SHT_LOUSER 0x80000000 /* reserved range for application */ 300 #define SHT_HIUSER 0xffffffff /* specific indexes */ 301 302 /* Section names */ 303 #define ELF_BSS ".bss" /* uninitialized data */ 304 #define ELF_COMMENT ".comment" /* version control information */ 305 #define ELF_DATA ".data" /* initialized data */ 306 #define ELF_DATA1 ".data1" /* initialized data */ 307 #define ELF_DEBUG ".debug" /* debug */ 308 #define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ 309 #define ELF_DYNSTR ".dynstr" /* dynamic string table */ 310 #define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ 311 #define ELF_FINI ".fini" /* termination code */ 312 #define ELF_FINI_ARRAY ".fini_array" /* Array of destructors */ 313 #define ELF_GOT ".got" /* global offset table */ 314 #define ELF_HASH ".hash" /* symbol hash table */ 315 #define ELF_INIT ".init" /* initialization code */ 316 #define ELF_INIT_ARRAY ".init_array" /* Array of constuctors */ 317 #define ELF_INTERP ".interp" /* Pathname of program interpreter */ 318 #define ELF_LINE ".line" /* Symbolic line numnber information */ 319 #define ELF_NOTE ".note" /* Contains note section */ 320 #define ELF_PLT ".plt" /* Procedure linkage table */ 321 #define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */ 322 #define ELF_REL_DATA ".rel.data" /* relocation data */ 323 #define ELF_REL_FINI ".rel.fini" /* relocation termination code */ 324 #define ELF_REL_INIT ".rel.init" /* relocation initialization code */ 325 #define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ 326 #define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ 327 #define ELF_REL_TEXT ".rel.text" /* relocation code */ 328 #define ELF_RODATA ".rodata" /* read-only data */ 329 #define ELF_RODATA1 ".rodata1" /* read-only data */ 330 #define ELF_SHSTRTAB ".shstrtab" /* section header string table */ 331 #define ELF_STRTAB ".strtab" /* string table */ 332 #define ELF_SYMTAB ".symtab" /* symbol table */ 333 #define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */ 334 #define ELF_TBSS ".tbss" /* thread local uninit data */ 335 #define ELF_TDATA ".tdata" /* thread local init data */ 336 #define ELF_TDATA1 ".tdata1" /* thread local init data */ 337 #define ELF_TEXT ".text" /* code */ 338 339 /* Section Attribute Flags - sh_flags */ 340 #define SHF_WRITE 0x1 /* Writable */ 341 #define SHF_ALLOC 0x2 /* occupies memory */ 342 #define SHF_EXECINSTR 0x4 /* executable */ 343 #define SHF_MERGE 0x10 /* Might be merged */ 344 #define SHF_STRINGS 0x20 /* Contains NULL terminated strings */ 345 #define SHF_INFO_LINK 0x40 /* sh_info contains SHT index */ 346 #define SHF_LINK_ORDER 0x80 /* Preserve order after combining*/ 347 #define SHF_OS_NONCONFORMING 0x100 /* Non-standard OS specific handling */ 348 #define SHF_GROUP 0x200 /* Member of section group */ 349 #define SHF_TLS 0x400 /* Thread local storage */ 350 #define SHF_MASKOS 0x0ff00000 /* OS specific */ 351 #define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ 352 /* specific section attributes */ 353 354 /* Section Group Flags */ 355 #define GRP_COMDAT 0x1 /* COMDAT group */ 356 #define GRP_MASKOS 0x0ff00000 /* Mask OS specific flags */ 357 #define GRP_MASKPROC 0xf0000000 /* Mask processor specific flags */ 358 359 /* Symbol Table Entry */ 360 typedef struct { 361 Elf32_Word st_name; /* name - index into string table */ 362 Elf32_Addr st_value; /* symbol value */ 363 Elf32_Word st_size; /* symbol size */ 364 unsigned char st_info; /* type and binding */ 365 unsigned char st_other; /* 0 - no defined meaning */ 366 Elf32_Half st_shndx; /* section header index */ 367 } Elf32_Sym; 368 369 typedef struct { 370 Elf64_Word st_name; /* name - index into string table */ 371 unsigned char st_info; /* type and binding */ 372 unsigned char st_other; /* 0 - no defined meaning */ 373 Elf64_Half st_shndx; /* section header index */ 374 Elf64_Addr st_value; /* symbol value */ 375 Elf64_Xword st_size; /* symbol size */ 376 } Elf64_Sym; 377 378 /* Symbol table index */ 379 #define STN_UNDEF 0 /* undefined */ 380 381 /* Extract symbol info - st_info */ 382 #define ELF32_ST_BIND(x) ((x) >> 4) 383 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) 384 #define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) 385 #define ELF32_ST_VISIBILITY(x) ((x) & 0x3) 386 387 /* Symbol Binding - ELF32_ST_BIND - st_info */ 388 #define STB_LOCAL 0 /* Local symbol */ 389 #define STB_GLOBAL 1 /* Global symbol */ 390 #define STB_WEAK 2 /* like global - lower precedence */ 391 #define STB_NUM 3 /* number of symbol bindings */ 392 #define STB_LOOS 10 /* reserved range for operating */ 393 #define STB_HIOS 12 /* system specific symbol bindings */ 394 #define STB_LOPROC 13 /* reserved range for processor */ 395 #define STB_HIPROC 15 /* specific symbol bindings */ 396 397 /* Symbol type - ELF32_ST_TYPE - st_info */ 398 #define STT_NOTYPE 0 /* not specified */ 399 #define STT_OBJECT 1 /* data object */ 400 #define STT_FUNC 2 /* function */ 401 #define STT_SECTION 3 /* section */ 402 #define STT_FILE 4 /* file */ 403 #define STT_NUM 5 /* number of symbol types */ 404 #define STT_TLS 6 /* Thread local storage symbol */ 405 #define STT_LOOS 10 /* reserved range for operating */ 406 #define STT_HIOS 12 /* system specific symbol types */ 407 #define STT_LOPROC 13 /* reserved range for processor */ 408 #define STT_HIPROC 15 /* specific symbol types */ 409 410 /* Symbol visibility - ELF32_ST_VISIBILITY - st_other */ 411 #define STV_DEFAULT 0 /* Normal visibility rules */ 412 #define STV_INTERNAL 1 /* Processor specific hidden class */ 413 #define STV_HIDDEN 2 /* Symbol unavailable in other mods */ 414 #define STV_PROTECTED 3 /* Not preemptible, not exported */ 415 416 /* Relocation entry with implicit addend */ 417 typedef struct { 418 Elf32_Addr r_offset; /* offset of relocation */ 419 Elf32_Word r_info; /* symbol table index and type */ 420 } Elf32_Rel; 421 422 /* Relocation entry with explicit addend */ 423 typedef struct { 424 Elf32_Addr r_offset; /* offset of relocation */ 425 Elf32_Word r_info; /* symbol table index and type */ 426 Elf32_Sword r_addend; 427 } Elf32_Rela; 428 429 typedef struct { 430 Elf64_Addr r_offset; /* Location at which to apply the action */ 431 Elf64_Xword r_info; /* index and type of relocation */ 432 } Elf64_Rel; 433 434 typedef struct { 435 Elf64_Addr r_offset; /* Location at which to apply the action */ 436 Elf64_Xword r_info; /* index and type of relocation */ 437 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 438 } Elf64_Rela; 439 440 /* Extract relocation info - r_info */ 441 #define ELF32_R_SYM(i) ((i) >> 8) 442 #define ELF32_R_TYPE(i) ((unsigned char) (i)) 443 #define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) 444 445 /* Program Header */ 446 typedef struct { 447 Elf32_Word p_type; /* segment type */ 448 Elf32_Off p_offset; /* segment offset */ 449 Elf32_Addr p_vaddr; /* virtual address of segment */ 450 Elf32_Addr p_paddr; /* physical address of segment */ 451 Elf32_Word p_filesz; /* number of bytes in file for seg */ 452 Elf32_Word p_memsz; /* number of bytes in mem. for seg */ 453 Elf32_Word p_flags; /* flags */ 454 Elf32_Word p_align; /* memory alignment */ 455 } Elf32_Phdr; 456 457 typedef struct { 458 Elf64_Word p_type; /* segment type */ 459 Elf64_Word p_flags; /* flags */ 460 Elf64_Off p_offset; /* segment offset */ 461 Elf64_Addr p_vaddr; /* virtual address of segment */ 462 Elf64_Addr p_paddr; /* physical address of segment */ 463 Elf64_Xword p_filesz; /* number of bytes in file for seg */ 464 Elf64_Xword p_memsz; /* number of bytes in mem. for seg */ 465 Elf64_Xword p_align; /* memory alignment */ 466 } Elf64_Phdr; 467 468 /* Segment types - p_type */ 469 #define PT_NULL 0 /* unused */ 470 #define PT_LOAD 1 /* loadable segment */ 471 #define PT_DYNAMIC 2 /* dynamic linking section */ 472 #define PT_INTERP 3 /* the RTLD */ 473 #define PT_NOTE 4 /* auxiliary information */ 474 #define PT_SHLIB 5 /* reserved - purpose undefined */ 475 #define PT_PHDR 6 /* program header */ 476 #define PT_TLS 7 /* Thread local storage template */ 477 #define PT_NUM 8 /* Number of segment types */ 478 #define PT_LOOS 0x60000000 /* reserved range for operating */ 479 #define PT_HIOS 0x6fffffff /* system specific segment types */ 480 #define PT_LOPROC 0x70000000 /* reserved range for processor */ 481 #define PT_HIPROC 0x7fffffff /* specific segment types */ 482 483 /* Segment flags - p_flags */ 484 #define PF_X 0x1 /* Executable */ 485 #define PF_W 0x2 /* Writable */ 486 #define PF_R 0x4 /* Readable */ 487 #define PF_MASKOS 0x0ff00000 /* OS specific segment flags */ 488 #define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ 489 /* specific segment flags */ 490 /* Dynamic structure */ 491 typedef struct { 492 Elf32_Sword d_tag; /* controls meaning of d_val */ 493 union { 494 Elf32_Word d_val; /* Multiple meanings - see d_tag */ 495 Elf32_Addr d_ptr; /* program virtual address */ 496 } d_un; 497 } Elf32_Dyn; 498 499 extern Elf32_Dyn _DYNAMIC[]; 500 501 typedef struct { 502 Elf64_Sxword d_tag; /* entry tag value */ 503 union { 504 Elf64_Xword d_val; 505 Elf64_Addr d_ptr; 506 } d_un; 507 } Elf64_Dyn; 508 509 #define ELF64_R_SYM(i) ((i) >> 32) 510 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) 511 512 /* Dynamic Array Tags - d_tag */ 513 #define DT_NULL 0 /* marks end of _DYNAMIC array */ 514 #define DT_NEEDED 1 /* string table offset of needed lib */ 515 #define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ 516 #define DT_PLTGOT 3 /* address PLT/GOT */ 517 #define DT_HASH 4 /* address of symbol hash table */ 518 #define DT_STRTAB 5 /* address of string table */ 519 #define DT_SYMTAB 6 /* address of symbol table */ 520 #define DT_RELA 7 /* address of relocation table */ 521 #define DT_RELASZ 8 /* size of relocation table */ 522 #define DT_RELAENT 9 /* size of relocation entry */ 523 #define DT_STRSZ 10 /* size of string table */ 524 #define DT_SYMENT 11 /* size of symbol table entry */ 525 #define DT_INIT 12 /* address of initialization func */ 526 #define DT_FINI 13 /* address of termination function */ 527 #define DT_SONAME 14 /* string table offset of shared obj */ 528 #define DT_RPATH 15 /* string table offset of library 529 search path */ 530 #define DT_SYMBOLIC 16 /* start sym search in shared obj */ 531 #define DT_REL 17 /* address of rel. tbl. w addends */ 532 #define DT_RELSZ 18 /* size of DT_REL relocation table */ 533 #define DT_RELENT 19 /* size of DT_REL relocation entry */ 534 #define DT_PLTREL 20 /* PLT referenced relocation entry */ 535 #define DT_DEBUG 21 /* bugger */ 536 #define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ 537 #define DT_JMPREL 23 /* add. of PLT's relocation entries */ 538 #define DT_BIND_NOW 24 /* Process relocations of object */ 539 #define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ 540 #define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ 541 #define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ 542 #define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ 543 #define DT_RUNPATH 29 /* Library search path */ 544 #define DT_FLAGS 30 /* Flags for the object being loaded */ 545 #define DT_ENCODING 32 /* Start of encoded range */ 546 #define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ 547 #define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ 548 #define DT_NUM 34 /* Number used */ 549 #define DT_LOOS 0x60000000 /* reserved range for OS */ 550 #define DT_HIOS 0x6fffffff /* specific dynamic array tags */ 551 #define DT_LOPROC 0x70000000 /* reserved range for processor */ 552 #define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ 553 554 /* Dynamic Tag Flags - d_un.d_val */ 555 #define DF_ORIGIN 0x01 /* Object may use DF_ORIGIN */ 556 #define DF_SYMBOLIC 0x02 /* Symbol resolutions starts here */ 557 #define DF_TEXTREL 0x04 /* Object contains text relocations */ 558 #define DF_BIND_NOW 0x08 /* No lazy binding for this object */ 559 #define DF_STATIC_TLS 0x10 /* Static thread local storage */ 560 561 /* Standard ELF hashing function */ 562 unsigned long elf_hash(const unsigned char *name); 563 564 #define ELF_TARG_VER 1 /* The ver for which this code is intended */ 565 566 #endif /* __ASSEMBLER */ 567 568 /* ELF register definitions */ 569 #define R_386_NONE 0 570 #define R_386_32 1 571 #define R_386_PC32 2 572 #define R_386_GOT32 3 573 #define R_386_PLT32 4 574 #define R_386_COPY 5 575 #define R_386_GLOB_DAT 6 576 #define R_386_JMP_SLOT 7 577 #define R_386_RELATIVE 8 578 #define R_386_GOTOFF 9 579 #define R_386_GOTPC 10 580 #define R_386_NUM 11 581 582 /* x86-64 relocation types */ 583 #define R_X86_64_NONE 0 /* No reloc */ 584 #define R_X86_64_64 1 /* Direct 64 bit */ 585 #define R_X86_64_PC32 2 /* PC relative 32 bit signed */ 586 #define R_X86_64_GOT32 3 /* 32 bit GOT entry */ 587 #define R_X86_64_PLT32 4 /* 32 bit PLT address */ 588 #define R_X86_64_COPY 5 /* Copy symbol at runtime */ 589 #define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ 590 #define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ 591 #define R_X86_64_RELATIVE 8 /* Adjust by program base */ 592 /* 32 bit signed pc relative offset to GOT */ 593 #define R_X86_64_GOTPCREL 9 594 #define R_X86_64_32 10 /* Direct 32 bit zero extended */ 595 #define R_X86_64_32S 11 /* Direct 32 bit sign extended */ 596 #define R_X86_64_16 12 /* Direct 16 bit zero extended */ 597 #define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */ 598 #define R_X86_64_8 14 /* Direct 8 bit sign extended */ 599 #define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */ 600 601 #define R_X86_64_NUM 16 602 603 /* 604 * XXX - PowerPC defines really don't belong in here, 605 * but we'll put them in for simplicity. 606 */ 607 608 /* Values for Elf32/64_Ehdr.e_flags */ 609 #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag */ 610 611 #define EF_PPC64_ELFV1_ABI 0x00000001 612 #define EF_PPC64_ELFV2_ABI 0x00000002 613 614 /* Cygnus local bits below */ 615 #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag*/ 616 #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib 617 flag */ 618 619 /* PowerPC relocations defined by the ABIs */ 620 #define R_PPC_NONE 0 621 #define R_PPC_ADDR32 1 /* 32bit absolute address */ 622 #define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored */ 623 #define R_PPC_ADDR16 3 /* 16bit absolute address */ 624 #define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */ 625 #define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */ 626 #define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */ 627 #define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */ 628 #define R_PPC_ADDR14_BRTAKEN 8 629 #define R_PPC_ADDR14_BRNTAKEN 9 630 #define R_PPC_REL24 10 /* PC relative 26 bit */ 631 #define R_PPC_REL14 11 /* PC relative 16 bit */ 632 #define R_PPC_REL14_BRTAKEN 12 633 #define R_PPC_REL14_BRNTAKEN 13 634 #define R_PPC_GOT16 14 635 #define R_PPC_GOT16_LO 15 636 #define R_PPC_GOT16_HI 16 637 #define R_PPC_GOT16_HA 17 638 #define R_PPC_PLTREL24 18 639 #define R_PPC_COPY 19 640 #define R_PPC_GLOB_DAT 20 641 #define R_PPC_JMP_SLOT 21 642 #define R_PPC_RELATIVE 22 643 #define R_PPC_LOCAL24PC 23 644 #define R_PPC_UADDR32 24 645 #define R_PPC_UADDR16 25 646 #define R_PPC_REL32 26 647 #define R_PPC_PLT32 27 648 #define R_PPC_PLTREL32 28 649 #define R_PPC_PLT16_LO 29 650 #define R_PPC_PLT16_HI 30 651 #define R_PPC_PLT16_HA 31 652 #define R_PPC_SDAREL16 32 653 #define R_PPC_SECTOFF 33 654 #define R_PPC_SECTOFF_LO 34 655 #define R_PPC_SECTOFF_HI 35 656 #define R_PPC_SECTOFF_HA 36 657 /* Keep this the last entry */ 658 #define R_PPC_NUM 37 659 660 /* 661 * The remaining relocs are from the Embedded ELF ABI, and are not 662 * in the SVR4 ELF ABI. 663 */ 664 #define R_PPC_EMB_NADDR32 101 665 #define R_PPC_EMB_NADDR16 102 666 #define R_PPC_EMB_NADDR16_LO 103 667 #define R_PPC_EMB_NADDR16_HI 104 668 #define R_PPC_EMB_NADDR16_HA 105 669 #define R_PPC_EMB_SDAI16 106 670 #define R_PPC_EMB_SDA2I16 107 671 #define R_PPC_EMB_SDA2REL 108 672 #define R_PPC_EMB_SDA21 109 /* 16 bit offset in SDA */ 673 #define R_PPC_EMB_MRKREF 110 674 #define R_PPC_EMB_RELSEC16 111 675 #define R_PPC_EMB_RELST_LO 112 676 #define R_PPC_EMB_RELST_HI 113 677 #define R_PPC_EMB_RELST_HA 114 678 #define R_PPC_EMB_BIT_FLD 115 679 #define R_PPC_EMB_RELSDA 116 /* 16 bit relative offset in SDA */ 680 681 /* Diab tool relocations */ 682 #define R_PPC_DIAB_SDA21_LO 180 /* like EMB_SDA21, but lower 16 bit */ 683 #define R_PPC_DIAB_SDA21_HI 181 /* like EMB_SDA21, but high 16 bit */ 684 #define R_PPC_DIAB_SDA21_HA 182 /* like EMB_SDA21, adjusted high 16 */ 685 #define R_PPC_DIAB_RELSDA_LO 183 /* like EMB_RELSDA, but lower 16 bit */ 686 #define R_PPC_DIAB_RELSDA_HI 184 /* like EMB_RELSDA, but high 16 bit */ 687 #define R_PPC_DIAB_RELSDA_HA 185 /* like EMB_RELSDA, adjusted high 16 */ 688 689 /* 690 * This is a phony reloc to handle any old fashioned TOC16 references 691 * that may still be in object files. 692 */ 693 #define R_PPC_TOC16 255 694 695 /* ARM relocs */ 696 #define R_ARM_NONE 0 /* No reloc */ 697 #define R_ARM_RELATIVE 23 /* Adjust by program base */ 698 699 /* AArch64 relocs */ 700 #define R_AARCH64_NONE 0 /* No relocation */ 701 #define R_AARCH64_RELATIVE 1027 /* Adjust by program base */ 702 703 /* RISC-V relocations */ 704 #define R_RISCV_32 1 705 #define R_RISCV_64 2 706 #define R_RISCV_RELATIVE 3 707 708 #ifndef __ASSEMBLY__ 709 unsigned long bootelf_exec(ulong (*entry)(int, char * const[]), 710 int argc, char *const argv[]); 711 unsigned long bootelf(unsigned long addr, Bootelf_flags flags, 712 int argc, char *const argv[]); 713 int valid_elf_image(unsigned long addr); 714 unsigned long load_elf64_image_phdr(unsigned long addr); 715 unsigned long load_elf64_image_shdr(unsigned long addr); 716 unsigned long load_elf_image_phdr(unsigned long addr); 717 unsigned long load_elf_image_shdr(unsigned long addr); 718 #endif 719 720 #endif /* _ELF_H */ 721