1/* 2 * sys/elfcommon.h 3 */ 4 5#ifndef _SYS_ELFCOMMON_H 6#define _SYS_ELFCOMMON_H 7 8#include <stdint.h> 9 10/* Segment types */ 11#define PT_NULL 0 12#define PT_LOAD 1 13#define PT_DYNAMIC 2 14#define PT_INTERP 3 15#define PT_NOTE 4 16#define PT_SHLIB 5 17#define PT_PHDR 6 18#define PT_LOOS 0x60000000 19#define PT_HIOS 0x6fffffff 20#define PT_LOPROC 0x70000000 21#define PT_HIPROC 0x7fffffff 22#define PT_GNU_EH_FRAME 0x6474e550 /* Extension, eh? */ 23 24/* ELF file types */ 25#define ET_NONE 0 26#define ET_REL 1 27#define ET_EXEC 2 28#define ET_DYN 3 29#define ET_CORE 4 30#define ET_LOPROC 0xff00 31#define ET_HIPROC 0xffff 32 33/* ELF machine types */ 34#define EM_NONE 0 35#define EM_M32 1 36#define EM_SPARC 2 37#define EM_386 3 38#define EM_68K 4 39#define EM_88K 5 40#define EM_486 6 /* Not used in Linux at least */ 41#define EM_860 7 42#define EM_MIPS 8 /* R3k, bigendian(?) */ 43#define EM_MIPS_RS4_BE 10 /* R4k BE */ 44#define EM_PARISC 15 45#define EM_SPARC32PLUS 18 46#define EM_PPC 20 47#define EM_PPC64 21 48#define EM_S390 22 49#define EM_SH 42 50#define EM_SPARCV9 43 /* v9 = SPARC64 */ 51#define EM_H8_300H 47 52#define EM_H8S 48 53#define EM_IA_64 50 /* Itanic */ 54#define EM_X86_64 62 55#define EM_CRIS 76 56#define EM_V850 87 57#define EM_ALPHA 0x9026 /* Interrim Alpha that stuck around */ 58#define EM_CYGNUS_V850 0x9080 /* Old v850 ID used by Cygnus */ 59#define EM_S390_OLD 0xA390 /* Obsolete interrim value for S/390 */ 60 61/* Dynamic type values */ 62#define DT_NULL 0 /* Marks end of dynamic section */ 63#define DT_NEEDED 1 /* Name of needed library */ 64#define DT_PLTRELSZ 2 /* Size in bytes of PLT relocs */ 65#define DT_PLTGOT 3 /* Processor defined value */ 66#define DT_HASH 4 /* Address of symbol hash table */ 67#define DT_STRTAB 5 /* Address of string table */ 68#define DT_SYMTAB 6 /* Address of symbol table */ 69#define DT_RELA 7 /* Address of Rela relocs */ 70#define DT_RELASZ 8 /* Total size of Rela relocs */ 71#define DT_RELAENT 9 /* Size of one Rela reloc */ 72#define DT_STRSZ 10 /* Size of string table */ 73#define DT_SYMENT 11 /* Size of one symbol table entry */ 74#define DT_INIT 12 /* Address of init function */ 75#define DT_FINI 13 /* Address of termination function */ 76#define DT_SONAME 14 /* Name of shared object */ 77#define DT_RPATH 15 /* Library search path (deprecated) */ 78#define DT_SYMBOLIC 16 /* Start symbol search here */ 79#define DT_REL 17 /* Address of Rel relocs */ 80#define DT_RELSZ 18 /* Total size of Rel relocs */ 81#define DT_RELENT 19 /* Size of one Rel reloc */ 82#define DT_PLTREL 20 /* Type of reloc in PLT */ 83#define DT_DEBUG 21 /* For debugging; unspecified */ 84#define DT_TEXTREL 22 /* Reloc might modify .text */ 85#define DT_JMPREL 23 /* Address of PLT relocs */ 86#define DT_BIND_NOW 24 /* Process relocations of object */ 87#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ 88#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ 89#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ 90#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ 91#define DT_RUNPATH 29 /* Library search path */ 92#define DT_FLAGS 30 /* Flags for the object being loaded */ 93#define DT_ENCODING 32 /* Start of encoded range */ 94#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ 95#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ 96#define DT_NUM 34 /* Number used */ 97#define DT_LOOS 0x6000000d /* Start of OS-specific */ 98#define DT_HIOS 0x6ffff000 /* End of OS-specific */ 99#define DT_LOPROC 0x70000000 /* Start of processor-specific */ 100#define DT_HIPROC 0x7fffffff /* End of processor-specific */ 101 102#define DT_VALRNGLO 0x6ffffd00 103#define DT_GNU_PRELINKED 0x6ffffdf5 /* Prelinking timestamp */ 104#define DT_GNU_CONFLICTSZ 0x6ffffdf6 /* Size of conflict section */ 105#define DT_GNU_LIBLISTSZ 0x6ffffdf7 /* Size of library list */ 106#define DT_CHECKSUM 0x6ffffdf8 107#define DT_PLTPADSZ 0x6ffffdf9 108#define DT_MOVEENT 0x6ffffdfa 109#define DT_MOVESZ 0x6ffffdfb 110#define DT_FEATURE_1 0x6ffffdfc /* Feature selection (DTF_*). */ 111#define DT_POSFLAG_1 0x6ffffdfd /* Flags for DT_* entries, effecting 112 the following DT_* entry. */ 113#define DT_SYMINSZ 0x6ffffdfe /* Size of syminfo table (in bytes) */ 114#define DT_SYMINENT 0x6ffffdff /* Entry size of syminfo */ 115#define DT_VALRNGHI 0x6ffffdff 116#define DT_VALTAGIDX(tag) (DT_VALRNGHI - (tag)) /* Reverse order! */ 117#define DT_VALNUM 12 118 119/* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the 120 Dyn.d_un.d_ptr field of the Elf*_Dyn structure. 121 122 If any adjustment is made to the ELF object after it has been 123 built these entries will need to be adjusted. */ 124#define DT_ADDRRNGLO 0x6ffffe00 125#define DT_GNU_HASH 0x6ffffef5 /* GNU-style hash table. */ 126#define DT_TLSDESC_PLT 0x6ffffef6 127#define DT_TLSDESC_GOT 0x6ffffef7 128#define DT_GNU_CONFLICT 0x6ffffef8 /* Start of conflict section */ 129#define DT_GNU_LIBLIST 0x6ffffef9 /* Library list */ 130#define DT_CONFIG 0x6ffffefa /* Configuration information. */ 131#define DT_DEPAUDIT 0x6ffffefb /* Dependency auditing. */ 132#define DT_AUDIT 0x6ffffefc /* Object auditing. */ 133#define DT_PLTPAD 0x6ffffefd /* PLT padding. */ 134#define DT_MOVETAB 0x6ffffefe /* Move table. */ 135#define DT_SYMINFO 0x6ffffeff /* Syminfo table. */ 136#define DT_ADDRRNGHI 0x6ffffeff 137#define DT_ADDRTAGIDX(tag) (DT_ADDRRNGHI - (tag)) /* Reverse order! */ 138#define DT_ADDRNUM 11 139 140/* The versioning entry types. The next are defined as part of the 141 GNU extension. */ 142#define DT_VERSYM 0x6ffffff0 143 144#define DT_RELACOUNT 0x6ffffff9 145#define DT_RELCOUNT 0x6ffffffa 146 147/* These were chosen by Sun. */ 148#define DT_FLAGS_1 0x6ffffffb /* State flags, see DF_1_* below. */ 149#define DT_VERDEF 0x6ffffffc /* Address of version definition 150 table */ 151#define DT_VERDEFNUM 0x6ffffffd /* Number of version definitions */ 152#define DT_VERNEED 0x6ffffffe /* Address of table with needed 153 versions */ 154#define DT_VERNEEDNUM 0x6fffffff /* Number of needed versions */ 155#define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */ 156#define DT_VERSIONTAGNUM 16 157 158/* Sun added these machine-independent extensions in the "processor-specific" 159 range. Be compatible. */ 160#define DT_AUXILIARY 0x7ffffffd /* Shared object to load before self */ 161#define DT_FILTER 0x7fffffff /* Shared object to get values from */ 162#define DT_EXTRATAGIDX(tag) ((Elf32_Word)-((Elf32_Sword) (tag) <<1>>1)-1) 163#define DT_EXTRANUM 3 164 165/* Auxilliary table entries */ 166#define AT_NULL 0 /* end of vector */ 167#define AT_IGNORE 1 /* entry should be ignored */ 168#define AT_EXECFD 2 /* file descriptor of program */ 169#define AT_PHDR 3 /* program headers for program */ 170#define AT_PHENT 4 /* size of program header entry */ 171#define AT_PHNUM 5 /* number of program headers */ 172#define AT_PAGESZ 6 /* system page size */ 173#define AT_BASE 7 /* base address of interpreter */ 174#define AT_FLAGS 8 /* flags */ 175#define AT_ENTRY 9 /* entry point of program */ 176#define AT_NOTELF 10 /* program is not ELF */ 177#define AT_UID 11 /* real uid */ 178#define AT_EUID 12 /* effective uid */ 179#define AT_GID 13 /* real gid */ 180#define AT_EGID 14 /* effective gid */ 181#define AT_PLATFORM 15 /* string identifying CPU for optimizations */ 182#define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */ 183#define AT_CLKTCK 17 /* frequency at which times() increments */ 184/* 18..22 = ? */ 185#define AT_SECURE 23 /* secure mode boolean */ 186 187/* Program header permission flags */ 188#define PF_X 0x1 189#define PF_W 0x2 190#define PF_R 0x4 191 192/* Section header types */ 193#define SHT_NULL 0 194#define SHT_PROGBITS 1 195#define SHT_SYMTAB 2 196#define SHT_STRTAB 3 197#define SHT_RELA 4 198#define SHT_HASH 5 199#define SHT_DYNAMIC 6 200#define SHT_NOTE 7 201#define SHT_NOBITS 8 202#define SHT_REL 9 203#define SHT_SHLIB 10 204#define SHT_DYNSYM 11 205#define SHT_NUM 12 206#define SHT_LOPROC 0x70000000 207#define SHT_HIPROC 0x7fffffff 208#define SHT_LOUSER 0x80000000 209#define SHT_HIUSER 0xffffffff 210 211/* Section header flags */ 212#define SHF_WRITE 0x1 213#define SHF_ALLOC 0x2 214#define SHF_EXECINSTR 0x4 215#define SHF_MASKPROC 0xf0000000 216 217/* Special section numbers */ 218#define SHN_UNDEF 0 219#define SHN_LORESERVE 0xff00 220#define SHN_LOPROC 0xff00 221#define SHN_HIPROC 0xff1f 222#define SHN_ABS 0xfff1 223#define SHN_COMMON 0xfff2 224#define SHN_HIRESERVE 0xffff 225 226/* Symbol table definitions */ 227 228/* How to extract and insert information held in the st_info field. */ 229 230#define ELF32_ST_BIND(val) (((unsigned char) (val)) >> 4) 231#define ELF32_ST_TYPE(val) ((val) & 0xf) 232#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 233 234/* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field. */ 235#define ELF64_ST_BIND(val) ELF32_ST_BIND (val) 236#define ELF64_ST_TYPE(val) ELF32_ST_TYPE (val) 237#define ELF64_ST_INFO(bind, type) ELF32_ST_INFO ((bind), (type)) 238 239/* Legal values for ST_BIND subfield of st_info (symbol binding). */ 240 241#define STB_LOCAL 0 /* Local symbol */ 242#define STB_GLOBAL 1 /* Global symbol */ 243#define STB_WEAK 2 /* Weak symbol */ 244#define STB_NUM 3 /* Number of defined types. */ 245#define STB_LOOS 10 /* Start of OS-specific */ 246#define STB_HIOS 12 /* End of OS-specific */ 247#define STB_LOPROC 13 /* Start of processor-specific */ 248#define STB_HIPROC 15 /* End of processor-specific */ 249 250/* Legal values for ST_TYPE subfield of st_info (symbol type). */ 251 252#define STT_NOTYPE 0 /* Symbol type is unspecified */ 253#define STT_OBJECT 1 /* Symbol is a data object */ 254#define STT_FUNC 2 /* Symbol is a code object */ 255#define STT_SECTION 3 /* Symbol associated with a section */ 256#define STT_FILE 4 /* Symbol's name is file name */ 257#define STT_COMMON 5 /* Symbol is a common data object */ 258#define STT_TLS 6 /* Symbol is thread-local data object*/ 259#define STT_NUM 7 /* Number of defined types. */ 260#define STT_LOOS 10 /* Start of OS-specific */ 261#define STT_HIOS 12 /* End of OS-specific */ 262#define STT_LOPROC 13 /* Start of processor-specific */ 263#define STT_HIPROC 15 /* End of processor-specific */ 264 265 266/* Symbol table indices are found in the hash buckets and chain table 267 of a symbol hash table section. This special index value indicates 268 the end of a chain, meaning no further symbols are found in that bucket. */ 269 270#define STN_UNDEF 0 /* End of a chain. */ 271 272/* Lenght of magic at the start of a file */ 273#define EI_NIDENT 16 274 275/* Magic number constants... */ 276#define EI_MAG0 0 /* e_ident[] indexes */ 277#define EI_MAG1 1 278#define EI_MAG2 2 279#define EI_MAG3 3 280#define EI_CLASS 4 281#define EI_DATA 5 282#define EI_VERSION 6 283#define EI_OSABI 7 284#define EI_PAD 8 285 286#define ELFMAG0 0x7f /* EI_MAG */ 287#define ELFMAG1 'E' 288#define ELFMAG2 'L' 289#define ELFMAG3 'F' 290#define ELFMAG "\177ELF" 291#define SELFMAG 4 292 293#define ELFCLASSNONE 0 /* EI_CLASS */ 294#define ELFCLASS32 1 295#define ELFCLASS64 2 296#define ELFCLASSNUM 3 297 298#define ELFDATANONE 0 /* e_ident[EI_DATA] */ 299#define ELFDATA2LSB 1 300#define ELFDATA2MSB 2 301 302#define EV_NONE 0 /* e_version, EI_VERSION */ 303#define EV_CURRENT 1 304#define EV_NUM 2 305 306#define ELFOSABI_NONE 0 307#define ELFOSABI_LINUX 3 308 309/* Intel 80386 specific definitions. */ 310 311/* i386 relocs. */ 312 313#define R_386_NONE 0 /* No reloc */ 314#define R_386_32 1 /* Direct 32 bit */ 315#define R_386_PC32 2 /* PC relative 32 bit */ 316#define R_386_GOT32 3 /* 32 bit GOT entry */ 317#define R_386_PLT32 4 /* 32 bit PLT address */ 318#define R_386_COPY 5 /* Copy symbol at runtime */ 319#define R_386_GLOB_DAT 6 /* Create GOT entry */ 320#define R_386_JMP_SLOT 7 /* Create PLT entry */ 321#define R_386_RELATIVE 8 /* Adjust by program base */ 322#define R_386_GOTOFF 9 /* 32 bit offset to GOT */ 323#define R_386_GOTPC 10 /* 32 bit PC relative offset to GOT */ 324#define R_386_32PLT 11 325#define R_386_TLS_TPOFF 14 /* Offset in static TLS block */ 326#define R_386_TLS_IE 15 /* Address of GOT entry for static TLS 327 block offset */ 328#define R_386_TLS_GOTIE 16 /* GOT entry for static TLS block 329 offset */ 330#define R_386_TLS_LE 17 /* Offset relative to static TLS 331 block */ 332#define R_386_TLS_GD 18 /* Direct 32 bit for GNU version of 333 general dynamic thread local data */ 334#define R_386_TLS_LDM 19 /* Direct 32 bit for GNU version of 335 local dynamic thread local data 336 in LE code */ 337#define R_386_16 20 338#define R_386_PC16 21 339#define R_386_8 22 340#define R_386_PC8 23 341#define R_386_TLS_GD_32 24 /* Direct 32 bit for general dynamic 342 thread local data */ 343#define R_386_TLS_GD_PUSH 25 /* Tag for pushl in GD TLS code */ 344#define R_386_TLS_GD_CALL 26 /* Relocation for call to 345 __tls_get_addr() */ 346#define R_386_TLS_GD_POP 27 /* Tag for popl in GD TLS code */ 347#define R_386_TLS_LDM_32 28 /* Direct 32 bit for local dynamic 348 thread local data in LE code */ 349#define R_386_TLS_LDM_PUSH 29 /* Tag for pushl in LDM TLS code */ 350#define R_386_TLS_LDM_CALL 30 /* Relocation for call to 351 __tls_get_addr() in LDM code */ 352#define R_386_TLS_LDM_POP 31 /* Tag for popl in LDM TLS code */ 353#define R_386_TLS_LDO_32 32 /* Offset relative to TLS block */ 354#define R_386_TLS_IE_32 33 /* GOT entry for negated static TLS 355 block offset */ 356#define R_386_TLS_LE_32 34 /* Negated offset relative to static 357 TLS block */ 358#define R_386_TLS_DTPMOD32 35 /* ID of module containing symbol */ 359#define R_386_TLS_DTPOFF32 36 /* Offset in TLS block */ 360#define R_386_TLS_TPOFF32 37 /* Negated offset in static TLS block */ 361/* Keep this the last entry. */ 362#define R_386_NUM 38 363 364/* AMD x86-64 relocations. */ 365#define R_X86_64_NONE 0 /* No reloc */ 366#define R_X86_64_64 1 /* Direct 64 bit */ 367#define R_X86_64_PC32 2 /* PC relative 32 bit signed */ 368#define R_X86_64_GOT32 3 /* 32 bit GOT entry */ 369#define R_X86_64_PLT32 4 /* 32 bit PLT address */ 370#define R_X86_64_COPY 5 /* Copy symbol at runtime */ 371#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ 372#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ 373#define R_X86_64_RELATIVE 8 /* Adjust by program base */ 374#define R_X86_64_GOTPCREL 9 /* 32 bit signed PC relative 375 offset to GOT */ 376#define R_X86_64_32 10 /* Direct 32 bit zero extended */ 377#define R_X86_64_32S 11 /* Direct 32 bit sign extended */ 378#define R_X86_64_16 12 /* Direct 16 bit zero extended */ 379#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */ 380#define R_X86_64_8 14 /* Direct 8 bit sign extended */ 381#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */ 382#define R_X86_64_DTPMOD64 16 /* ID of module containing symbol */ 383#define R_X86_64_DTPOFF64 17 /* Offset in module's TLS block */ 384#define R_X86_64_TPOFF64 18 /* Offset in initial TLS block */ 385#define R_X86_64_TLSGD 19 /* 32 bit signed PC relative offset 386 to two GOT entries for GD symbol */ 387#define R_X86_64_TLSLD 20 /* 32 bit signed PC relative offset 388 to two GOT entries for LD symbol */ 389#define R_X86_64_DTPOFF32 21 /* Offset in TLS block */ 390#define R_X86_64_GOTTPOFF 22 /* 32 bit signed PC relative offset 391 to GOT entry for IE symbol */ 392#define R_X86_64_TPOFF32 23 /* Offset in initial TLS block */ 393#define R_X86_64_PC64 24 /* PC relative 64 bit */ 394#define R_X86_64_GOTOFF64 25 /* 64 bit offset to GOT */ 395#define R_X86_64_GOTPC32 26 /* 32 bit signed pc relative 396 offset to GOT */ 397#define R_X86_64_GOT64 27 /* 64-bit GOT entry offset */ 398#define R_X86_64_GOTPCREL64 28 /* 64-bit PC relative offset 399 to GOT entry */ 400#define R_X86_64_GOTPC64 29 /* 64-bit PC relative offset to GOT */ 401#define R_X86_64_GOTPLT64 30 /* like GOT64, says PLT entry needed */ 402#define R_X86_64_PLTOFF64 31 /* 64-bit GOT relative offset 403 to PLT entry */ 404#define R_X86_64_SIZE32 32 /* Size of symbol plus 32-bit addend */ 405#define R_X86_64_SIZE64 33 /* Size of symbol plus 64-bit addend */ 406#define R_X86_64_GOTPC32_TLSDESC 34 /* GOT offset for TLS descriptor. */ 407#define R_X86_64_TLSDESC_CALL 35 /* Marker for call through TLS 408 descriptor. */ 409#define R_X86_64_TLSDESC 36 /* TLS descriptor. */ 410#define R_X86_64_IRELATIVE 37 /* Adjust indirectly by program base */ 411 412#define R_X86_64_NUM 38 413 414#endif /* _SYS_ELFCOMMON_H */ 415