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