Include/linux/elf.h
14205 #ifndef _LINUX_ELF_H 14206 #define _LINUX_ELF_H 14207 14208 #include <linux/types.h> 14209 #include <asm/elf.h> 14210 14211 /* 32-bit ELF base types. */ 14212 typedef __u32 Elf32_Addr; 14213 typedef __u16 Elf32_Half; 14214 typedef __u32 Elf32_Off; 14215 typedef __s32 Elf32_Sword; 14216 typedef __u32 Elf32_Word; 14217 14218 /* 64-bit ELF base types. */ 14219 typedef __u64 Elf64_Addr; 14220 typedef __u16 Elf64_Half; 14221 typedef __s16 Elf64_SHalf; 14222 typedef __u64 Elf64_Off; 14223 typedef __s64 Elf64_Sword; 14224 typedef __u64 Elf64_Word; 14225 14226 /* These constants are for the segment types stored in 14227 * the image headers */ 14228 #define PT_NULL 0 14229 #define PT_LOAD 1 14230 #define PT_DYNAMIC 2 14231 #define PT_INTERP 3 14232 #define PT_NOTE 4 14233 #define PT_SHLIB 5 14234 #define PT_PHDR 6 14235 #define PT_LOPROC 0x70000000 14236 #define PT_HIPROC 0x7fffffff 14237 14238 /* These constants define the different elf file types */ 14239 #define ET_NONE 0 14240 #define ET_REL 1 14241 #define ET_EXEC 2 14242 #define ET_DYN 3 14243 #define ET_CORE 4 14244 #define ET_LOPROC 5 14245 #define ET_HIPROC 6 14246 14247 /* These constants define the various ELF target machs */ 14248 #define EM_NONE 0 14249 #define EM_M32 1 14250 #define EM_SPARC 2 14251 #define EM_386 3 14252 #define EM_68K 4 14253 #define EM_88K 5 14254 #define EM_486 6 /* Perhaps disused */ 14255 #define EM_860 7 14256 14257 /* MIPS R3000 (officially, big-endian only) */ 14258 #define EM_MIPS 8 14259 14260 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */ 14261 14262 #define EM_PARISC 15 /* HPPA */ 14263 14264 #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */ 14265 14266 #define EM_PPC 20 /* PowerPC */ 14267 14268 #define EM_SPARCV9 43 /* SPARC v9 64-bit */ 14269 14270 /* This is an interim value that we will use until the 14271 * committee comes up with a final number. */ 14272 #define EM_ALPHA 0x9026 14273 14274 14275 /* This is the info that is needed to parse the dynamic 14276 * section of the file */ 14277 #define DT_NULL 0 14278 #define DT_NEEDED 1 14279 #define DT_PLTRELSZ 2 14280 #define DT_PLTGOT 3 14281 #define DT_HASH 4 14282 #define DT_STRTAB 5 14283 #define DT_SYMTAB 6 14284 #define DT_RELA 7 14285 #define DT_RELASZ 8 14286 #define DT_RELAENT 9 14287 #define DT_STRSZ 10 14288 #define DT_SYMENT 11 14289 #define DT_INIT 12 14290 #define DT_FINI 13 14291 #define DT_SONAME 14 14292 #define DT_RPATH 15 14293 #define DT_SYMBOLIC 16 14294 #define DT_REL 17 14295 #define DT_RELSZ 18 14296 #define DT_RELENT 19 14297 #define DT_PLTREL 20 14298 #define DT_DEBUG 21 14299 #define DT_TEXTREL 22 14300 #define DT_JMPREL 23 14301 #define DT_LOPROC 0x70000000 14302 #define DT_HIPROC 0x7fffffff 14303 14304 /* This info is needed when parsing the symbol table */ 14305 #define STB_LOCAL 0 14306 #define STB_GLOBAL 1 14307 #define STB_WEAK 2 14308 14309 #define STT_NOTYPE 0 14310 #define STT_OBJECT 1 14311 #define STT_FUNC 2 14312 #define STT_SECTION 3 14313 #define STT_FILE 4 14314 14315 #define ELF32_ST_BIND(x) ((x) >> 4) 14316 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) 14317 14318 /* Symbolic values for the entries in the auxiliary table 14319 put on the initial stack */ 14320 #define AT_NULL 0 /* end of vector */ 14321 #define AT_IGNORE 1 /* entry should be ignored */ 14322 #define AT_EXECFD 2 /* file descriptor of program */ 14323 #define AT_PHDR 3 /* program headers for program */ 14324 #define AT_PHENT 4 /* size of program header entry */ 14325 #define AT_PHNUM 5 /* number of program headers */ 14326 #define AT_PAGESZ 6 /* system page size */ 14327 #define AT_BASE 7 /* base address of interpreter */ 14328 #define AT_FLAGS 8 /* flags */ 14329 #define AT_ENTRY 9 /* entry point of program */ 14330 #define AT_NOTELF 10 /* program is not ELF */ 14331 #define AT_UID 11 /* real uid */ 14332 #define AT_EUID 12 /* effective uid */ 14333 #define AT_GID 13 /* real gid */ 14334 #define AT_EGID 14 /* effective gid */ 14335 #define AT_PLATFORM 15 /* string identifying CPU for 14336 * optimizations */ 14337 #define AT_HWCAP 16 /* arch dependent hints at CPU 14338 * capabilities */ 14339 14340 typedef struct dynamic{ 14341 Elf32_Sword d_tag; 14342 union{ 14343 Elf32_Sword d_val; 14344 Elf32_Addr d_ptr; 14345 } d_un; 14346 } Elf32_Dyn; 14347 14348 typedef struct { 14349 Elf64_Word d_tag; /* entry tag value */ 14350 union { 14351 Elf64_Word d_val; 14352 Elf64_Word d_ptr; 14353 } d_un; 14354 } Elf64_Dyn; 14355 14356 /* The following are used with relocations */ 14357 #define ELF32_R_SYM(x) ((x) >> 8) 14358 #define ELF32_R_TYPE(x) ((x) & 0xff) 14359 14360 #define R_386_NONE 0 14361 #define R_386_32 1 14362 #define R_386_PC32 2 14363 #define R_386_GOT32 3 14364 #define R_386_PLT32 4 14365 #define R_386_COPY 5 14366 #define R_386_GLOB_DAT 6 14367 #define R_386_JMP_SLOT 7 14368 #define R_386_RELATIVE 8 14369 #define R_386_GOTOFF 9 14370 #define R_386_GOTPC 10 14371 #define R_386_NUM 11 14372 14373 /* Sparc ELF relocation types */ 14374 #define R_SPARC_NONE 0 14375 #define R_SPARC_8 1 14376 #define R_SPARC_16 2 14377 #define R_SPARC_32 3 14378 #define R_SPARC_DISP8 4 14379 #define R_SPARC_DISP16 5 14380 #define R_SPARC_DISP32 6 14381 #define R_SPARC_WDISP30 7 14382 #define R_SPARC_WDISP22 8 14383 #define R_SPARC_HI22 9 14384 #define R_SPARC_22 10 14385 #define R_SPARC_13 11 14386 #define R_SPARC_LO10 12 14387 #define R_SPARC_GOT10 13 14388 #define R_SPARC_GOT13 14 14389 #define R_SPARC_GOT22 15 14390 #define R_SPARC_PC10 16 14391 #define R_SPARC_PC22 17 14392 #define R_SPARC_WPLT30 18 14393 #define R_SPARC_COPY 19 14394 #define R_SPARC_GLOB_DAT 20 14395 #define R_SPARC_JMP_SLOT 21 14396 #define R_SPARC_RELATIVE 22 14397 #define R_SPARC_UA32 23 14398 #define R_SPARC_PLT32 24 14399 #define R_SPARC_HIPLT22 25 14400 #define R_SPARC_LOPLT10 26 14401 #define R_SPARC_PCPLT32 27 14402 #define R_SPARC_PCPLT22 28 14403 #define R_SPARC_PCPLT10 29 14404 #define R_SPARC_10 30 14405 #define R_SPARC_11 31 14406 #define R_SPARC_WDISP16 40 14407 #define R_SPARC_WDISP19 41 14408 #define R_SPARC_7 43 14409 #define R_SPARC_5 44 14410 #define R_SPARC_6 45 14411 14412 /* Bits present in AT_HWCAP, primarily for Sparc32. */ 14413 14414 #define HWCAP_SPARC_FLUSH 1 /* CPU supports flush 14415 * instruction. */ 14416 #define HWCAP_SPARC_STBAR 2 14417 #define HWCAP_SPARC_SWAP 4 14418 #define HWCAP_SPARC_MULDIV 8 14419 #define HWCAP_SPARC_V9 16 14420 14421 14422 /* 68k ELF relocation types */ 14423 #define R_68K_NONE 0 14424 #define R_68K_32 1 14425 #define R_68K_16 2 14426 #define R_68K_8 3 14427 #define R_68K_PC32 4 14428 #define R_68K_PC16 5 14429 #define R_68K_PC8 6 14430 #define R_68K_GOT32 7 14431 #define R_68K_GOT16 8 14432 #define R_68K_GOT8 9 14433 #define R_68K_GOT32O 10 14434 #define R_68K_GOT16O 11 14435 #define R_68K_GOT8O 12 14436 #define R_68K_PLT32 13 14437 #define R_68K_PLT16 14 14438 #define R_68K_PLT8 15 14439 #define R_68K_PLT32O 16 14440 #define R_68K_PLT16O 17 14441 #define R_68K_PLT8O 18 14442 #define R_68K_COPY 19 14443 #define R_68K_GLOB_DAT 20 14444 #define R_68K_JMP_SLOT 21 14445 #define R_68K_RELATIVE 22 14446 14447 /* Alpha ELF relocation types */ 14448 #define R_ALPHA_NONE 0 /* No reloc */ 14449 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */ 14450 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */ 14451 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit*/ 14452 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit 14453 * w/optimization */ 14454 #define R_ALPHA_LITUSE 5 /* Optimization hint 14455 * for LITERAL */ 14456 #define R_ALPHA_GPDISP 6 /* Add displacement to 14457 * GP */ 14458 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit 14459 * shifted */ 14460 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit 14461 * shifted */ 14462 #define R_ALPHA_SREL16 9 /* PC relative 16 bit*/ 14463 #define R_ALPHA_SREL32 10 /* PC relative 32 bit*/ 14464 #define R_ALPHA_SREL64 11 /* PC relative 64 bit*/ 14465 #define R_ALPHA_OP_PUSH 12 /* OP stack push */ 14466 #define R_ALPHA_OP_STORE 13 /* OP stack pop and 14467 * store */ 14468 #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */ 14469 #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift 14470 */ 14471 #define R_ALPHA_GPVALUE 16 14472 #define R_ALPHA_GPRELHIGH 17 14473 #define R_ALPHA_GPRELLOW 18 14474 #define R_ALPHA_IMMED_GP_16 19 14475 #define R_ALPHA_IMMED_GP_HI32 20 14476 #define R_ALPHA_IMMED_SCN_HI32 21 14477 #define R_ALPHA_IMMED_BR_HI32 22 14478 #define R_ALPHA_IMMED_LO32 23 14479 #define R_ALPHA_COPY 24 /* Copy symbol at 14480 * runtime */ 14481 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */ 14482 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */ 14483 #define R_ALPHA_RELATIVE 27 /* Adjust by program 14484 * base */ 14485 14486 /* Legal values for e_flags field of Elf64_Ehdr. */ 14487 14488 #define EF_ALPHA_32BIT 1 /* All addresses are 14489 * below 2GB */ 14490 14491 14492 typedef struct elf32_rel { 14493 Elf32_Addr r_offset; 14494 Elf32_Word r_info; 14495 } Elf32_Rel; 14496 14497 typedef struct elf64_rel { 14498 /* Location at which to apply the action */ 14499 Elf64_Addr r_offset; 14500 Elf64_Word r_info; /* index and type of relocation */ 14501 } Elf64_Rel; 14502 14503 typedef struct elf32_rela{ 14504 Elf32_Addr r_offset; 14505 Elf32_Word r_info; 14506 Elf32_Sword r_addend; 14507 } Elf32_Rela; 14508 14509 typedef struct elf64_rela { 14510 /* Location at which to apply the action */ 14511 Elf64_Addr r_offset; 14512 /* index and type of relocation */ 14513 Elf64_Word r_info; 14514 /* Constant addend used to compute value */ 14515 Elf64_Word r_addend; 14516 } Elf64_Rela; 14517 14518 typedef struct elf32_sym{ 14519 Elf32_Word st_name; 14520 Elf32_Addr st_value; 14521 Elf32_Word st_size; 14522 unsigned char st_info; 14523 unsigned char st_other; 14524 Elf32_Half st_shndx; 14525 } Elf32_Sym; 14526 14527 typedef struct elf64_sym { 14528 Elf32_Word st_name; /* Symbol name, index in 14529 * string tbl (yes, Elf32) */ 14530 unsigned char st_info; /* Type and binding 14531 * attributes */ 14532 unsigned char st_other; /* No defined meaning, 0 */ 14533 Elf64_Half st_shndx; /* Associated section index */ 14534 Elf64_Addr st_value; /* Value of the symbol */ 14535 Elf64_Word st_size; /* Associated symbol size */ 14536 } Elf64_Sym; 14537 14538 14539 #define EI_NIDENT 16 14540 14541 typedef struct elf32_hdr{ 14542 unsigned char e_ident[EI_NIDENT]; 14543 Elf32_Half e_type; 14544 Elf32_Half e_machine; 14545 Elf32_Word e_version; 14546 Elf32_Addr e_entry; /* Entry point */ 14547 Elf32_Off e_phoff; 14548 Elf32_Off e_shoff; 14549 Elf32_Word e_flags; 14550 Elf32_Half e_ehsize; 14551 Elf32_Half e_phentsize; 14552 Elf32_Half e_phnum; 14553 Elf32_Half e_shentsize; 14554 Elf32_Half e_shnum; 14555 Elf32_Half e_shstrndx; 14556 } Elf32_Ehdr; 14557 14558 typedef struct elf64_hdr { 14559 unsigned char e_ident[16]; /* ELF "magic number" */ 14560 Elf64_SHalf e_type; 14561 Elf64_Half e_machine; 14562 __s32 e_version; 14563 Elf64_Addr e_entry; /* Entry point virtual address */ 14564 Elf64_Off e_phoff; /* Program hdr table file offset */ 14565 Elf64_Off e_shoff; /* Section hdr table file offset */ 14566 __s32 e_flags; 14567 Elf64_SHalf e_ehsize; 14568 Elf64_SHalf e_phentsize; 14569 Elf64_SHalf e_phnum; 14570 Elf64_SHalf e_shentsize; 14571 Elf64_SHalf e_shnum; 14572 Elf64_SHalf e_shstrndx; 14573 } Elf64_Ehdr; 14574 14575 /* These constants define the permissions on sections in 14576 the program header, p_flags. */ 14577 #define PF_R 0x4 14578 #define PF_W 0x2 14579 #define PF_X 0x1 14580 14581 typedef struct elf32_phdr{ 14582 Elf32_Word p_type; 14583 Elf32_Off p_offset; 14584 Elf32_Addr p_vaddr; 14585 Elf32_Addr p_paddr; 14586 Elf32_Word p_filesz; 14587 Elf32_Word p_memsz; 14588 Elf32_Word p_flags; 14589 Elf32_Word p_align; 14590 } Elf32_Phdr; 14591 14592 typedef struct elf64_phdr { 14593 __s32 p_type; 14594 __s32 p_flags; 14595 Elf64_Off p_offset; /* Segment file offset */ 14596 Elf64_Addr p_vaddr; /* Segment virtual address */ 14597 Elf64_Addr p_paddr; /* Segment physical address */ 14598 Elf64_Word p_filesz; /* Segment size in file */ 14599 Elf64_Word p_memsz; /* Segment size in memory */ 14600 Elf64_Word p_align; /* Segment alignment, 14601 * file & memory */ 14602 } Elf64_Phdr; 14603 14604 /* sh_type */ 14605 #define SHT_NULL 0 14606 #define SHT_PROGBITS 1 14607 #define SHT_SYMTAB 2 14608 #define SHT_STRTAB 3 14609 #define SHT_RELA 4 14610 #define SHT_HASH 5 14611 #define SHT_DYNAMIC 6 14612 #define SHT_NOTE 7 14613 #define SHT_NOBITS 8 14614 #define SHT_REL 9 14615 #define SHT_SHLIB 10 14616 #define SHT_DYNSYM 11 14617 #define SHT_NUM 12 14618 #define SHT_LOPROC 0x70000000 14619 #define SHT_HIPROC 0x7fffffff 14620 #define SHT_LOUSER 0x80000000 14621 #define SHT_HIUSER 0xffffffff 14622 14623 /* sh_flags */ 14624 #define SHF_WRITE 0x1 14625 #define SHF_ALLOC 0x2 14626 #define SHF_EXECINSTR 0x4 14627 #define SHF_MASKPROC 0xf0000000 14628 14629 /* special section indexes */ 14630 #define SHN_UNDEF 0 14631 #define SHN_LORESERVE 0xff00 14632 #define SHN_LOPROC 0xff00 14633 #define SHN_HIPROC 0xff1f 14634 #define SHN_ABS 0xfff1 14635 #define SHN_COMMON 0xfff2 14636 #define SHN_HIRESERVE 0xffff 14637 14638 typedef struct { 14639 Elf32_Word sh_name; 14640 Elf32_Word sh_type; 14641 Elf32_Word sh_flags; 14642 Elf32_Addr sh_addr; 14643 Elf32_Off sh_offset; 14644 Elf32_Word sh_size; 14645 Elf32_Word sh_link; 14646 Elf32_Word sh_info; 14647 Elf32_Word sh_addralign; 14648 Elf32_Word sh_entsize; 14649 } Elf32_Shdr; 14650 14651 typedef struct elf64_shdr { 14652 Elf32_Word sh_name; /* Section name, index in 14653 * string tbl (yes Elf32) */ 14654 Elf32_Word sh_type; /* Type of section 14655 * (yes Elf32) */ 14656 Elf64_Word sh_flags; /* Miscellaneous section 14657 * attributes */ 14658 Elf64_Addr sh_addr; /* Section virtual addr at 14659 * execution */ 14660 Elf64_Off sh_offset; /* Section file offset */ 14661 Elf64_Word sh_size; /* Size of section in bytes */ 14662 Elf32_Word sh_link; /* Index of another section 14663 * (yes Elf32) */ 14664 Elf32_Word sh_info; /* Additional section 14665 * information (yes Elf32) */ 14666 Elf64_Word sh_addralign; /* Section alignment */ 14667 Elf64_Word sh_entsize; /* Entry size if section holds 14668 * table */ 14669 } Elf64_Shdr; 14670 14671 #define EI_MAG0 0 /* e_ident[] indexes */ 14672 #define EI_MAG1 1 14673 #define EI_MAG2 2 14674 #define EI_MAG3 3 14675 #define EI_CLASS 4 14676 #define EI_DATA 5 14677 #define EI_VERSION 6 14678 #define EI_PAD 7 14679 14680 #define ELFMAG0 0x7f /* EI_MAG */ 14681 #define ELFMAG1 'E' 14682 #define ELFMAG2 'L' 14683 #define ELFMAG3 'F' 14684 #define ELFMAG "\177ELF" 14685 #define SELFMAG 4 14686 14687 #define ELFCLASSNONE 0 /* EI_CLASS */ 14688 #define ELFCLASS32 1 14689 #define ELFCLASS64 2 14690 #define ELFCLASSNUM 3 14691 14692 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ 14693 #define ELFDATA2LSB 1 14694 #define ELFDATA2MSB 2 14695 14696 #define EV_NONE 0 /* e_version, EI_VERSION */ 14697 #define EV_CURRENT 1 14698 #define EV_NUM 2 14699 14700 /* Notes used in ET_CORE */ 14701 #define NT_PRSTATUS 1 14702 #define NT_PRFPREG 2 14703 #define NT_PRPSINFO 3 14704 #define NT_TASKSTRUCT 4 14705 14706 /* Note header in a PT_NOTE section */ 14707 typedef struct elf32_note { 14708 Elf32_Word n_namesz; /* Name size */ 14709 Elf32_Word n_descsz; /* Content size */ 14710 Elf32_Word n_type; /* Content type */ 14711 } Elf32_Nhdr; 14712 14713 /* Note header in a PT_NOTE section */ 14714 /* For now we use the 32 bit version of the structure 14715 * until we figure out whether we need anything better. 14716 * Note - on the Alpha, "unsigned int" is only 32 bits.*/ 14717 typedef struct elf64_note { 14718 Elf32_Word n_namesz; /* Name size */ 14719 Elf32_Word n_descsz; /* Content size */ 14720 Elf32_Word n_type; /* Content type */ 14721 } Elf64_Nhdr; 14722 14723 #if ELF_CLASS == ELFCLASS32 14724 14725 extern Elf32_Dyn _DYNAMIC []; 14726 #define elfhdr elf32_hdr 14727 #define elf_phdr elf32_phdr 14728 #define elf_note elf32_note 14729 14730 #else 14731 14732 extern Elf64_Dyn _DYNAMIC []; 14733 #define elfhdr elf64_hdr 14734 #define elf_phdr elf64_phdr 14735 #define elf_note elf64_note 14736 14737 #endif 14738 14739 14740 #endif /* _LINUX_ELF_H */
