1#ifndef _LINUX_ELF_H 2#define _LINUX_ELF_H 3 4#include <linux/types.h> 5#include <linux/elf-em.h> 6 7struct 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. */ 17typedef __u32 Elf32_Addr; 18typedef __u16 Elf32_Half; 19typedef __u32 Elf32_Off; 20typedef __s32 Elf32_Sword; 21typedef __u32 Elf32_Word; 22 23/* 64-bit ELF base types. */ 24typedef __u64 Elf64_Addr; 25typedef __u16 Elf64_Half; 26typedef __s16 Elf64_SHalf; 27typedef __u64 Elf64_Off; 28typedef __s32 Elf64_Sword; 29typedef __u32 Elf64_Word; 30typedef __u64 Elf64_Xword; 31typedef __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/* 51 * Extended Numbering 52 * 53 * If the real number of program header table entries is larger than 54 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the 55 * section header at index 0, and PN_XNUM is set to e_phnum 56 * field. Otherwise, the section header at index 0 is zero 57 * initialized, if it exists. 58 * 59 * Specifications are available in: 60 * 61 * - Sun microsystems: Linker and Libraries. 62 * Part No: 817-1984-17, September 2008. 63 * URL: http://docs.sun.com/app/docs/doc/817-1984 64 * 65 * - System V ABI AMD64 Architecture Processor Supplement 66 * Draft Version 0.99., 67 * May 11, 2009. 68 * URL: http://www.x86-64.org/ 69 */ 70#define PN_XNUM 0xffff 71 72/* These constants define the different elf file types */ 73#define ET_NONE 0 74#define ET_REL 1 75#define ET_EXEC 2 76#define ET_DYN 3 77#define ET_CORE 4 78#define ET_LOPROC 0xff00 79#define ET_HIPROC 0xffff 80 81/* This is the info that is needed to parse the dynamic section of the file */ 82#define DT_NULL 0 83#define DT_NEEDED 1 84#define DT_PLTRELSZ 2 85#define DT_PLTGOT 3 86#define DT_HASH 4 87#define DT_STRTAB 5 88#define DT_SYMTAB 6 89#define DT_RELA 7 90#define DT_RELASZ 8 91#define DT_RELAENT 9 92#define DT_STRSZ 10 93#define DT_SYMENT 11 94#define DT_INIT 12 95#define DT_FINI 13 96#define DT_SONAME 14 97#define DT_RPATH 15 98#define DT_SYMBOLIC 16 99#define DT_REL 17 100#define DT_RELSZ 18 101#define DT_RELENT 19 102#define DT_PLTREL 20 103#define DT_DEBUG 21 104#define DT_TEXTREL 22 105#define DT_JMPREL 23 106#define DT_ENCODING 32 107#define OLD_DT_LOOS 0x60000000 108#define DT_LOOS 0x6000000d 109#define DT_HIOS 0x6ffff000 110#define DT_VALRNGLO 0x6ffffd00 111#define DT_VALRNGHI 0x6ffffdff 112#define DT_ADDRRNGLO 0x6ffffe00 113#define DT_ADDRRNGHI 0x6ffffeff 114#define DT_VERSYM 0x6ffffff0 115#define DT_RELACOUNT 0x6ffffff9 116#define DT_RELCOUNT 0x6ffffffa 117#define DT_FLAGS_1 0x6ffffffb 118#define DT_VERDEF 0x6ffffffc 119#define DT_VERDEFNUM 0x6ffffffd 120#define DT_VERNEED 0x6ffffffe 121#define DT_VERNEEDNUM 0x6fffffff 122#define OLD_DT_HIOS 0x6fffffff 123#define DT_LOPROC 0x70000000 124#define DT_HIPROC 0x7fffffff 125 126/* This info is needed when parsing the symbol table */ 127#define STB_LOCAL 0 128#define STB_GLOBAL 1 129#define STB_WEAK 2 130 131#define STT_NOTYPE 0 132#define STT_OBJECT 1 133#define STT_FUNC 2 134#define STT_SECTION 3 135#define STT_FILE 4 136#define STT_COMMON 5 137#define STT_TLS 6 138 139#define ELF_ST_BIND(x) ((x) >> 4) 140#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 141#define ELF32_ST_BIND(x) ELF_ST_BIND(x) 142#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 143#define ELF64_ST_BIND(x) ELF_ST_BIND(x) 144#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 145 146typedef struct dynamic{ 147 Elf32_Sword d_tag; 148 union{ 149 Elf32_Sword d_val; 150 Elf32_Addr d_ptr; 151 } d_un; 152} Elf32_Dyn; 153 154typedef struct { 155 Elf64_Sxword d_tag; /* entry tag value */ 156 union { 157 Elf64_Xword d_val; 158 Elf64_Addr d_ptr; 159 } d_un; 160} Elf64_Dyn; 161 162/* The following are used with relocations */ 163#define ELF32_R_SYM(x) ((x) >> 8) 164#define ELF32_R_TYPE(x) ((x) & 0xff) 165 166#define ELF64_R_SYM(i) ((i) >> 32) 167#define ELF64_R_TYPE(i) ((i) & 0xffffffff) 168 169typedef struct elf32_rel { 170 Elf32_Addr r_offset; 171 Elf32_Word r_info; 172} Elf32_Rel; 173 174typedef struct elf64_rel { 175 Elf64_Addr r_offset; /* Location at which to apply the action */ 176 Elf64_Xword r_info; /* index and type of relocation */ 177} Elf64_Rel; 178 179typedef struct elf32_rela{ 180 Elf32_Addr r_offset; 181 Elf32_Word r_info; 182 Elf32_Sword r_addend; 183} Elf32_Rela; 184 185typedef struct elf64_rela { 186 Elf64_Addr r_offset; /* Location at which to apply the action */ 187 Elf64_Xword r_info; /* index and type of relocation */ 188 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 189} Elf64_Rela; 190 191typedef struct elf32_sym{ 192 Elf32_Word st_name; 193 Elf32_Addr st_value; 194 Elf32_Word st_size; 195 unsigned char st_info; 196 unsigned char st_other; 197 Elf32_Half st_shndx; 198} Elf32_Sym; 199 200typedef struct elf64_sym { 201 Elf64_Word st_name; /* Symbol name, index in string tbl */ 202 unsigned char st_info; /* Type and binding attributes */ 203 unsigned char st_other; /* No defined meaning, 0 */ 204 Elf64_Half st_shndx; /* Associated section index */ 205 Elf64_Addr st_value; /* Value of the symbol */ 206 Elf64_Xword st_size; /* Associated symbol size */ 207} Elf64_Sym; 208 209 210#define EI_NIDENT 16 211 212typedef struct elf32_hdr{ 213 unsigned char e_ident[EI_NIDENT]; 214 Elf32_Half e_type; 215 Elf32_Half e_machine; 216 Elf32_Word e_version; 217 Elf32_Addr e_entry; /* Entry point */ 218 Elf32_Off e_phoff; 219 Elf32_Off e_shoff; 220 Elf32_Word e_flags; 221 Elf32_Half e_ehsize; 222 Elf32_Half e_phentsize; 223 Elf32_Half e_phnum; 224 Elf32_Half e_shentsize; 225 Elf32_Half e_shnum; 226 Elf32_Half e_shstrndx; 227} Elf32_Ehdr; 228 229typedef struct elf64_hdr { 230 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ 231 Elf64_Half e_type; 232 Elf64_Half e_machine; 233 Elf64_Word e_version; 234 Elf64_Addr e_entry; /* Entry point virtual address */ 235 Elf64_Off e_phoff; /* Program header table file offset */ 236 Elf64_Off e_shoff; /* Section header table file offset */ 237 Elf64_Word e_flags; 238 Elf64_Half e_ehsize; 239 Elf64_Half e_phentsize; 240 Elf64_Half e_phnum; 241 Elf64_Half e_shentsize; 242 Elf64_Half e_shnum; 243 Elf64_Half e_shstrndx; 244} Elf64_Ehdr; 245 246/* These constants define the permissions on sections in the program 247 header, p_flags. */ 248#define PF_R 0x4 249#define PF_W 0x2 250#define PF_X 0x1 251 252typedef struct elf32_phdr{ 253 Elf32_Word p_type; 254 Elf32_Off p_offset; 255 Elf32_Addr p_vaddr; 256 Elf32_Addr p_paddr; 257 Elf32_Word p_filesz; 258 Elf32_Word p_memsz; 259 Elf32_Word p_flags; 260 Elf32_Word p_align; 261} Elf32_Phdr; 262 263typedef struct elf64_phdr { 264 Elf64_Word p_type; 265 Elf64_Word p_flags; 266 Elf64_Off p_offset; /* Segment file offset */ 267 Elf64_Addr p_vaddr; /* Segment virtual address */ 268 Elf64_Addr p_paddr; /* Segment physical address */ 269 Elf64_Xword p_filesz; /* Segment size in file */ 270 Elf64_Xword p_memsz; /* Segment size in memory */ 271 Elf64_Xword p_align; /* Segment alignment, file & memory */ 272} Elf64_Phdr; 273 274/* sh_type */ 275#define SHT_NULL 0 276#define SHT_PROGBITS 1 277#define SHT_SYMTAB 2 278#define SHT_STRTAB 3 279#define SHT_RELA 4 280#define SHT_HASH 5 281#define SHT_DYNAMIC 6 282#define SHT_NOTE 7 283#define SHT_NOBITS 8 284#define SHT_REL 9 285#define SHT_SHLIB 10 286#define SHT_DYNSYM 11 287#define SHT_NUM 12 288#define SHT_LOPROC 0x70000000 289#define SHT_HIPROC 0x7fffffff 290#define SHT_LOUSER 0x80000000 291#define SHT_HIUSER 0xffffffff 292 293/* sh_flags */ 294#define SHF_WRITE 0x1 295#define SHF_ALLOC 0x2 296#define SHF_EXECINSTR 0x4 297#define SHF_MASKPROC 0xf0000000 298 299/* special section indexes */ 300#define SHN_UNDEF 0 301#define SHN_LORESERVE 0xff00 302#define SHN_LOPROC 0xff00 303#define SHN_HIPROC 0xff1f 304#define SHN_ABS 0xfff1 305#define SHN_COMMON 0xfff2 306#define SHN_HIRESERVE 0xffff 307 308typedef struct elf32_shdr { 309 Elf32_Word sh_name; 310 Elf32_Word sh_type; 311 Elf32_Word sh_flags; 312 Elf32_Addr sh_addr; 313 Elf32_Off sh_offset; 314 Elf32_Word sh_size; 315 Elf32_Word sh_link; 316 Elf32_Word sh_info; 317 Elf32_Word sh_addralign; 318 Elf32_Word sh_entsize; 319} Elf32_Shdr; 320 321typedef struct elf64_shdr { 322 Elf64_Word sh_name; /* Section name, index in string tbl */ 323 Elf64_Word sh_type; /* Type of section */ 324 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 325 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 326 Elf64_Off sh_offset; /* Section file offset */ 327 Elf64_Xword sh_size; /* Size of section in bytes */ 328 Elf64_Word sh_link; /* Index of another section */ 329 Elf64_Word sh_info; /* Additional section information */ 330 Elf64_Xword sh_addralign; /* Section alignment */ 331 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 332} Elf64_Shdr; 333 334#define EI_MAG0 0 /* e_ident[] indexes */ 335#define EI_MAG1 1 336#define EI_MAG2 2 337#define EI_MAG3 3 338#define EI_CLASS 4 339#define EI_DATA 5 340#define EI_VERSION 6 341#define EI_OSABI 7 342#define EI_PAD 8 343 344#define ELFMAG0 0x7f /* EI_MAG */ 345#define ELFMAG1 'E' 346#define ELFMAG2 'L' 347#define ELFMAG3 'F' 348#define ELFMAG "\177ELF" 349#define SELFMAG 4 350 351#define ELFCLASSNONE 0 /* EI_CLASS */ 352#define ELFCLASS32 1 353#define ELFCLASS64 2 354#define ELFCLASSNUM 3 355 356#define ELFDATANONE 0 /* e_ident[EI_DATA] */ 357#define ELFDATA2LSB 1 358#define ELFDATA2MSB 2 359 360#define EV_NONE 0 /* e_version, EI_VERSION */ 361#define EV_CURRENT 1 362#define EV_NUM 2 363 364#define ELFOSABI_NONE 0 365#define ELFOSABI_LINUX 3 366 367#ifndef ELF_OSABI 368#define ELF_OSABI ELFOSABI_NONE 369#endif 370 371/* 372 * Notes used in ET_CORE. Architectures export some of the arch register sets 373 * using the corresponding note types via the PTRACE_GETREGSET and 374 * PTRACE_SETREGSET requests. 375 */ 376#define NT_PRSTATUS 1 377#define NT_PRFPREG 2 378#define NT_PRPSINFO 3 379#define NT_TASKSTRUCT 4 380#define NT_AUXV 6 381#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 382#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ 383#define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ 384#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ 385#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ 386#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ 387#define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ 388#define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ 389#define NT_S390_TIMER 0x301 /* s390 timer register */ 390#define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ 391#define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ 392#define NT_S390_CTRS 0x304 /* s390 control registers */ 393#define NT_S390_PREFIX 0x305 /* s390 prefix register */ 394#define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ 395 396 397/* Note header in a PT_NOTE section */ 398typedef struct elf32_note { 399 Elf32_Word n_namesz; /* Name size */ 400 Elf32_Word n_descsz; /* Content size */ 401 Elf32_Word n_type; /* Content type */ 402} Elf32_Nhdr; 403 404/* Note header in a PT_NOTE section */ 405typedef struct elf64_note { 406 Elf64_Word n_namesz; /* Name size */ 407 Elf64_Word n_descsz; /* Content size */ 408 Elf64_Word n_type; /* Content type */ 409} Elf64_Nhdr; 410 411#endif /* _LINUX_ELF_H */ 412