1#ifndef _LINUX_ELF_H 2#define _LINUX_ELF_H 3 4#include <linux/types.h> 5#include <linux/elf-em.h> 6#ifdef __KERNEL__ 7#include <asm/elf.h> 8#endif 9 10struct file; 11 12#ifndef elf_read_implies_exec 13 /* Executables for which elf_read_implies_exec() returns TRUE will 14 have the READ_IMPLIES_EXEC personality flag set automatically. 15 Override in asm/elf.h as needed. */ 16# define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 17#endif 18 19/* 32-bit ELF base types. */ 20typedef __u32 Elf32_Addr; 21typedef __u16 Elf32_Half; 22typedef __u32 Elf32_Off; 23typedef __s32 Elf32_Sword; 24typedef __u32 Elf32_Word; 25 26/* 64-bit ELF base types. */ 27typedef __u64 Elf64_Addr; 28typedef __u16 Elf64_Half; 29typedef __s16 Elf64_SHalf; 30typedef __u64 Elf64_Off; 31typedef __s32 Elf64_Sword; 32typedef __u32 Elf64_Word; 33typedef __u64 Elf64_Xword; 34typedef __s64 Elf64_Sxword; 35 36/* These constants are for the segment types stored in the image headers */ 37#define PT_NULL 0 38#define PT_LOAD 1 39#define PT_DYNAMIC 2 40#define PT_INTERP 3 41#define PT_NOTE 4 42#define PT_SHLIB 5 43#define PT_PHDR 6 44#define PT_TLS 7 /* Thread local storage segment */ 45#define PT_LOOS 0x60000000 /* OS-specific */ 46#define PT_HIOS 0x6fffffff /* OS-specific */ 47#define PT_LOPROC 0x70000000 48#define PT_HIPROC 0x7fffffff 49#define PT_GNU_EH_FRAME 0x6474e550 50 51#define PT_GNU_STACK (PT_LOOS + 0x474e551) 52 53/* These constants define the different elf file types */ 54#define ET_NONE 0 55#define ET_REL 1 56#define ET_EXEC 2 57#define ET_DYN 3 58#define ET_CORE 4 59#define ET_LOPROC 0xff00 60#define ET_HIPROC 0xffff 61 62/* This is the info that is needed to parse the dynamic section of the file */ 63#define DT_NULL 0 64#define DT_NEEDED 1 65#define DT_PLTRELSZ 2 66#define DT_PLTGOT 3 67#define DT_HASH 4 68#define DT_STRTAB 5 69#define DT_SYMTAB 6 70#define DT_RELA 7 71#define DT_RELASZ 8 72#define DT_RELAENT 9 73#define DT_STRSZ 10 74#define DT_SYMENT 11 75#define DT_INIT 12 76#define DT_FINI 13 77#define DT_SONAME 14 78#define DT_RPATH 15 79#define DT_SYMBOLIC 16 80#define DT_REL 17 81#define DT_RELSZ 18 82#define DT_RELENT 19 83#define DT_PLTREL 20 84#define DT_DEBUG 21 85#define DT_TEXTREL 22 86#define DT_JMPREL 23 87#define DT_ENCODING 32 88#define OLD_DT_LOOS 0x60000000 89#define DT_LOOS 0x6000000d 90#define DT_HIOS 0x6ffff000 91#define DT_VALRNGLO 0x6ffffd00 92#define DT_VALRNGHI 0x6ffffdff 93#define DT_ADDRRNGLO 0x6ffffe00 94#define DT_ADDRRNGHI 0x6ffffeff 95#define DT_VERSYM 0x6ffffff0 96#define DT_RELACOUNT 0x6ffffff9 97#define DT_RELCOUNT 0x6ffffffa 98#define DT_FLAGS_1 0x6ffffffb 99#define DT_VERDEF 0x6ffffffc 100#define DT_VERDEFNUM 0x6ffffffd 101#define DT_VERNEED 0x6ffffffe 102#define DT_VERNEEDNUM 0x6fffffff 103#define OLD_DT_HIOS 0x6fffffff 104#define DT_LOPROC 0x70000000 105#define DT_HIPROC 0x7fffffff 106 107/* This info is needed when parsing the symbol table */ 108#define STB_LOCAL 0 109#define STB_GLOBAL 1 110#define STB_WEAK 2 111 112#define STT_NOTYPE 0 113#define STT_OBJECT 1 114#define STT_FUNC 2 115#define STT_SECTION 3 116#define STT_FILE 4 117#define STT_COMMON 5 118#define STT_TLS 6 119 120#define ELF_ST_BIND(x) ((x) >> 4) 121#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 122#define ELF32_ST_BIND(x) ELF_ST_BIND(x) 123#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 124#define ELF64_ST_BIND(x) ELF_ST_BIND(x) 125#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 126 127typedef struct dynamic{ 128 Elf32_Sword d_tag; 129 union{ 130 Elf32_Sword d_val; 131 Elf32_Addr d_ptr; 132 } d_un; 133} Elf32_Dyn; 134 135typedef struct { 136 Elf64_Sxword d_tag; /* entry tag value */ 137 union { 138 Elf64_Xword d_val; 139 Elf64_Addr d_ptr; 140 } d_un; 141} Elf64_Dyn; 142 143/* The following are used with relocations */ 144#define ELF32_R_SYM(x) ((x) >> 8) 145#define ELF32_R_TYPE(x) ((x) & 0xff) 146 147#define ELF64_R_SYM(i) ((i) >> 32) 148#define ELF64_R_TYPE(i) ((i) & 0xffffffff) 149 150typedef struct elf32_rel { 151 Elf32_Addr r_offset; 152 Elf32_Word r_info; 153} Elf32_Rel; 154 155typedef struct elf64_rel { 156 Elf64_Addr r_offset; /* Location at which to apply the action */ 157 Elf64_Xword r_info; /* index and type of relocation */ 158} Elf64_Rel; 159 160typedef struct elf32_rela{ 161 Elf32_Addr r_offset; 162 Elf32_Word r_info; 163 Elf32_Sword r_addend; 164} Elf32_Rela; 165 166typedef struct elf64_rela { 167 Elf64_Addr r_offset; /* Location at which to apply the action */ 168 Elf64_Xword r_info; /* index and type of relocation */ 169 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 170} Elf64_Rela; 171 172typedef struct elf32_sym{ 173 Elf32_Word st_name; 174 Elf32_Addr st_value; 175 Elf32_Word st_size; 176 unsigned char st_info; 177 unsigned char st_other; 178 Elf32_Half st_shndx; 179} Elf32_Sym; 180 181typedef struct elf64_sym { 182 Elf64_Word st_name; /* Symbol name, index in string tbl */ 183 unsigned char st_info; /* Type and binding attributes */ 184 unsigned char st_other; /* No defined meaning, 0 */ 185 Elf64_Half st_shndx; /* Associated section index */ 186 Elf64_Addr st_value; /* Value of the symbol */ 187 Elf64_Xword st_size; /* Associated symbol size */ 188} Elf64_Sym; 189 190 191#define EI_NIDENT 16 192 193typedef struct elf32_hdr{ 194 unsigned char e_ident[EI_NIDENT]; 195 Elf32_Half e_type; 196 Elf32_Half e_machine; 197 Elf32_Word e_version; 198 Elf32_Addr e_entry; /* Entry point */ 199 Elf32_Off e_phoff; 200 Elf32_Off e_shoff; 201 Elf32_Word e_flags; 202 Elf32_Half e_ehsize; 203 Elf32_Half e_phentsize; 204 Elf32_Half e_phnum; 205 Elf32_Half e_shentsize; 206 Elf32_Half e_shnum; 207 Elf32_Half e_shstrndx; 208} Elf32_Ehdr; 209 210typedef struct elf64_hdr { 211 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ 212 Elf64_Half e_type; 213 Elf64_Half e_machine; 214 Elf64_Word e_version; 215 Elf64_Addr e_entry; /* Entry point virtual address */ 216 Elf64_Off e_phoff; /* Program header table file offset */ 217 Elf64_Off e_shoff; /* Section header table file offset */ 218 Elf64_Word e_flags; 219 Elf64_Half e_ehsize; 220 Elf64_Half e_phentsize; 221 Elf64_Half e_phnum; 222 Elf64_Half e_shentsize; 223 Elf64_Half e_shnum; 224 Elf64_Half e_shstrndx; 225} Elf64_Ehdr; 226 227/* These constants define the permissions on sections in the program 228 header, p_flags. */ 229#define PF_R 0x4 230#define PF_W 0x2 231#define PF_X 0x1 232 233typedef struct elf32_phdr{ 234 Elf32_Word p_type; 235 Elf32_Off p_offset; 236 Elf32_Addr p_vaddr; 237 Elf32_Addr p_paddr; 238 Elf32_Word p_filesz; 239 Elf32_Word p_memsz; 240 Elf32_Word p_flags; 241 Elf32_Word p_align; 242} Elf32_Phdr; 243 244typedef struct elf64_phdr { 245 Elf64_Word p_type; 246 Elf64_Word p_flags; 247 Elf64_Off p_offset; /* Segment file offset */ 248 Elf64_Addr p_vaddr; /* Segment virtual address */ 249 Elf64_Addr p_paddr; /* Segment physical address */ 250 Elf64_Xword p_filesz; /* Segment size in file */ 251 Elf64_Xword p_memsz; /* Segment size in memory */ 252 Elf64_Xword p_align; /* Segment alignment, file & memory */ 253} Elf64_Phdr; 254 255/* sh_type */ 256#define SHT_NULL 0 257#define SHT_PROGBITS 1 258#define SHT_SYMTAB 2 259#define SHT_STRTAB 3 260#define SHT_RELA 4 261#define SHT_HASH 5 262#define SHT_DYNAMIC 6 263#define SHT_NOTE 7 264#define SHT_NOBITS 8 265#define SHT_REL 9 266#define SHT_SHLIB 10 267#define SHT_DYNSYM 11 268#define SHT_NUM 12 269#define SHT_LOPROC 0x70000000 270#define SHT_HIPROC 0x7fffffff 271#define SHT_LOUSER 0x80000000 272#define SHT_HIUSER 0xffffffff 273 274/* sh_flags */ 275#define SHF_WRITE 0x1 276#define SHF_ALLOC 0x2 277#define SHF_EXECINSTR 0x4 278#define SHF_MASKPROC 0xf0000000 279 280/* special section indexes */ 281#define SHN_UNDEF 0 282#define SHN_LORESERVE 0xff00 283#define SHN_LOPROC 0xff00 284#define SHN_HIPROC 0xff1f 285#define SHN_ABS 0xfff1 286#define SHN_COMMON 0xfff2 287#define SHN_HIRESERVE 0xffff 288 289typedef struct { 290 Elf32_Word sh_name; 291 Elf32_Word sh_type; 292 Elf32_Word sh_flags; 293 Elf32_Addr sh_addr; 294 Elf32_Off sh_offset; 295 Elf32_Word sh_size; 296 Elf32_Word sh_link; 297 Elf32_Word sh_info; 298 Elf32_Word sh_addralign; 299 Elf32_Word sh_entsize; 300} Elf32_Shdr; 301 302typedef struct elf64_shdr { 303 Elf64_Word sh_name; /* Section name, index in string tbl */ 304 Elf64_Word sh_type; /* Type of section */ 305 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 306 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 307 Elf64_Off sh_offset; /* Section file offset */ 308 Elf64_Xword sh_size; /* Size of section in bytes */ 309 Elf64_Word sh_link; /* Index of another section */ 310 Elf64_Word sh_info; /* Additional section information */ 311 Elf64_Xword sh_addralign; /* Section alignment */ 312 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 313} Elf64_Shdr; 314 315#define EI_MAG0 0 /* e_ident[] indexes */ 316#define EI_MAG1 1 317#define EI_MAG2 2 318#define EI_MAG3 3 319#define EI_CLASS 4 320#define EI_DATA 5 321#define EI_VERSION 6 322#define EI_OSABI 7 323#define EI_PAD 8 324 325#define ELFMAG0 0x7f /* EI_MAG */ 326#define ELFMAG1 'E' 327#define ELFMAG2 'L' 328#define ELFMAG3 'F' 329#define ELFMAG "\177ELF" 330#define SELFMAG 4 331 332#define ELFCLASSNONE 0 /* EI_CLASS */ 333#define ELFCLASS32 1 334#define ELFCLASS64 2 335#define ELFCLASSNUM 3 336 337#define ELFDATANONE 0 /* e_ident[EI_DATA] */ 338#define ELFDATA2LSB 1 339#define ELFDATA2MSB 2 340 341#define EV_NONE 0 /* e_version, EI_VERSION */ 342#define EV_CURRENT 1 343#define EV_NUM 2 344 345#define ELFOSABI_NONE 0 346#define ELFOSABI_LINUX 3 347 348#ifndef ELF_OSABI 349#define ELF_OSABI ELFOSABI_NONE 350#endif 351 352/* Notes used in ET_CORE */ 353#define NT_PRSTATUS 1 354#define NT_PRFPREG 2 355#define NT_PRPSINFO 3 356#define NT_TASKSTRUCT 4 357#define NT_AUXV 6 358#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 359#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ 360#define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ 361#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ 362#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ 363#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ 364#define NT_PRXSTATUS 0x300 /* s390 upper register halves */ 365 366 367/* Note header in a PT_NOTE section */ 368typedef struct elf32_note { 369 Elf32_Word n_namesz; /* Name size */ 370 Elf32_Word n_descsz; /* Content size */ 371 Elf32_Word n_type; /* Content type */ 372} Elf32_Nhdr; 373 374/* Note header in a PT_NOTE section */ 375typedef struct elf64_note { 376 Elf64_Word n_namesz; /* Name size */ 377 Elf64_Word n_descsz; /* Content size */ 378 Elf64_Word n_type; /* Content type */ 379} Elf64_Nhdr; 380 381#ifdef __KERNEL__ 382#if ELF_CLASS == ELFCLASS32 383 384extern Elf32_Dyn _DYNAMIC []; 385#define elfhdr elf32_hdr 386#define elf_phdr elf32_phdr 387#define elf_note elf32_note 388#define elf_addr_t Elf32_Off 389 390#else 391 392extern Elf64_Dyn _DYNAMIC []; 393#define elfhdr elf64_hdr 394#define elf_phdr elf64_phdr 395#define elf_note elf64_note 396#define elf_addr_t Elf64_Off 397 398#endif 399 400/* Optional callbacks to write extra ELF notes. */ 401#ifndef ARCH_HAVE_EXTRA_ELF_NOTES 402static inline int elf_coredump_extra_notes_size(void) { return 0; } 403static inline int elf_coredump_extra_notes_write(struct file *file, 404 loff_t *foffset) { return 0; } 405#else 406extern int elf_coredump_extra_notes_size(void); 407extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset); 408#endif 409#endif /* __KERNEL__ */ 410#endif /* _LINUX_ELF_H */ 411