1#ifndef _UAPI_LINUX_ELF_H 2#define _UAPI_LINUX_ELF_H 3 4#include <linux/types.h> 5#include <linux/elf-em.h> 6 7/* 32-bit ELF base types. */ 8typedef __u32 Elf32_Addr; 9typedef __u16 Elf32_Half; 10typedef __u32 Elf32_Off; 11typedef __s32 Elf32_Sword; 12typedef __u32 Elf32_Word; 13 14/* 64-bit ELF base types. */ 15typedef __u64 Elf64_Addr; 16typedef __u16 Elf64_Half; 17typedef __s16 Elf64_SHalf; 18typedef __u64 Elf64_Off; 19typedef __s32 Elf64_Sword; 20typedef __u32 Elf64_Word; 21typedef __u64 Elf64_Xword; 22typedef __s64 Elf64_Sxword; 23 24/* These constants are for the segment types stored in the image headers */ 25#define PT_NULL 0 26#define PT_LOAD 1 27#define PT_DYNAMIC 2 28#define PT_INTERP 3 29#define PT_NOTE 4 30#define PT_SHLIB 5 31#define PT_PHDR 6 32#define PT_TLS 7 /* Thread local storage segment */ 33#define PT_LOOS 0x60000000 /* OS-specific */ 34#define PT_HIOS 0x6fffffff /* OS-specific */ 35#define PT_LOPROC 0x70000000 36#define PT_HIPROC 0x7fffffff 37#define PT_GNU_EH_FRAME 0x6474e550 38 39#define PT_GNU_STACK (PT_LOOS + 0x474e551) 40 41/* 42 * Extended Numbering 43 * 44 * If the real number of program header table entries is larger than 45 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the 46 * section header at index 0, and PN_XNUM is set to e_phnum 47 * field. Otherwise, the section header at index 0 is zero 48 * initialized, if it exists. 49 * 50 * Specifications are available in: 51 * 52 * - Oracle: Linker and Libraries. 53 * Part No: 817–1984–19, August 2011. 54 * http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf 55 * 56 * - System V ABI AMD64 Architecture Processor Supplement 57 * Draft Version 0.99.4, 58 * January 13, 2010. 59 * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf 60 */ 61#define PN_XNUM 0xffff 62 63/* These constants define the different elf file types */ 64#define ET_NONE 0 65#define ET_REL 1 66#define ET_EXEC 2 67#define ET_DYN 3 68#define ET_CORE 4 69#define ET_LOPROC 0xff00 70#define ET_HIPROC 0xffff 71 72/* This is the info that is needed to parse the dynamic section of the file */ 73#define DT_NULL 0 74#define DT_NEEDED 1 75#define DT_PLTRELSZ 2 76#define DT_PLTGOT 3 77#define DT_HASH 4 78#define DT_STRTAB 5 79#define DT_SYMTAB 6 80#define DT_RELA 7 81#define DT_RELASZ 8 82#define DT_RELAENT 9 83#define DT_STRSZ 10 84#define DT_SYMENT 11 85#define DT_INIT 12 86#define DT_FINI 13 87#define DT_SONAME 14 88#define DT_RPATH 15 89#define DT_SYMBOLIC 16 90#define DT_REL 17 91#define DT_RELSZ 18 92#define DT_RELENT 19 93#define DT_PLTREL 20 94#define DT_DEBUG 21 95#define DT_TEXTREL 22 96#define DT_JMPREL 23 97#define DT_ENCODING 32 98#define OLD_DT_LOOS 0x60000000 99#define DT_LOOS 0x6000000d 100#define DT_HIOS 0x6ffff000 101#define DT_VALRNGLO 0x6ffffd00 102#define DT_VALRNGHI 0x6ffffdff 103#define DT_ADDRRNGLO 0x6ffffe00 104#define DT_ADDRRNGHI 0x6ffffeff 105#define DT_VERSYM 0x6ffffff0 106#define DT_RELACOUNT 0x6ffffff9 107#define DT_RELCOUNT 0x6ffffffa 108#define DT_FLAGS_1 0x6ffffffb 109#define DT_VERDEF 0x6ffffffc 110#define DT_VERDEFNUM 0x6ffffffd 111#define DT_VERNEED 0x6ffffffe 112#define DT_VERNEEDNUM 0x6fffffff 113#define OLD_DT_HIOS 0x6fffffff 114#define DT_LOPROC 0x70000000 115#define DT_HIPROC 0x7fffffff 116 117/* This info is needed when parsing the symbol table */ 118#define STB_LOCAL 0 119#define STB_GLOBAL 1 120#define STB_WEAK 2 121 122#define STT_NOTYPE 0 123#define STT_OBJECT 1 124#define STT_FUNC 2 125#define STT_SECTION 3 126#define STT_FILE 4 127#define STT_COMMON 5 128#define STT_TLS 6 129 130#define ELF_ST_BIND(x) ((x) >> 4) 131#define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 132#define ELF32_ST_BIND(x) ELF_ST_BIND(x) 133#define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 134#define ELF64_ST_BIND(x) ELF_ST_BIND(x) 135#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 136 137typedef struct dynamic{ 138 Elf32_Sword d_tag; 139 union{ 140 Elf32_Sword d_val; 141 Elf32_Addr d_ptr; 142 } d_un; 143} Elf32_Dyn; 144 145typedef struct { 146 Elf64_Sxword d_tag; /* entry tag value */ 147 union { 148 Elf64_Xword d_val; 149 Elf64_Addr d_ptr; 150 } d_un; 151} Elf64_Dyn; 152 153/* The following are used with relocations */ 154#define ELF32_R_SYM(x) ((x) >> 8) 155#define ELF32_R_TYPE(x) ((x) & 0xff) 156 157#define ELF64_R_SYM(i) ((i) >> 32) 158#define ELF64_R_TYPE(i) ((i) & 0xffffffff) 159 160typedef struct elf32_rel { 161 Elf32_Addr r_offset; 162 Elf32_Word r_info; 163} Elf32_Rel; 164 165typedef struct elf64_rel { 166 Elf64_Addr r_offset; /* Location at which to apply the action */ 167 Elf64_Xword r_info; /* index and type of relocation */ 168} Elf64_Rel; 169 170typedef struct elf32_rela{ 171 Elf32_Addr r_offset; 172 Elf32_Word r_info; 173 Elf32_Sword r_addend; 174} Elf32_Rela; 175 176typedef struct elf64_rela { 177 Elf64_Addr r_offset; /* Location at which to apply the action */ 178 Elf64_Xword r_info; /* index and type of relocation */ 179 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 180} Elf64_Rela; 181 182typedef struct elf32_sym{ 183 Elf32_Word st_name; 184 Elf32_Addr st_value; 185 Elf32_Word st_size; 186 unsigned char st_info; 187 unsigned char st_other; 188 Elf32_Half st_shndx; 189} Elf32_Sym; 190 191typedef struct elf64_sym { 192 Elf64_Word st_name; /* Symbol name, index in string tbl */ 193 unsigned char st_info; /* Type and binding attributes */ 194 unsigned char st_other; /* No defined meaning, 0 */ 195 Elf64_Half st_shndx; /* Associated section index */ 196 Elf64_Addr st_value; /* Value of the symbol */ 197 Elf64_Xword st_size; /* Associated symbol size */ 198} Elf64_Sym; 199 200 201#define EI_NIDENT 16 202 203typedef struct elf32_hdr{ 204 unsigned char e_ident[EI_NIDENT]; 205 Elf32_Half e_type; 206 Elf32_Half e_machine; 207 Elf32_Word e_version; 208 Elf32_Addr e_entry; /* Entry point */ 209 Elf32_Off e_phoff; 210 Elf32_Off e_shoff; 211 Elf32_Word e_flags; 212 Elf32_Half e_ehsize; 213 Elf32_Half e_phentsize; 214 Elf32_Half e_phnum; 215 Elf32_Half e_shentsize; 216 Elf32_Half e_shnum; 217 Elf32_Half e_shstrndx; 218} Elf32_Ehdr; 219 220typedef struct elf64_hdr { 221 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ 222 Elf64_Half e_type; 223 Elf64_Half e_machine; 224 Elf64_Word e_version; 225 Elf64_Addr e_entry; /* Entry point virtual address */ 226 Elf64_Off e_phoff; /* Program header table file offset */ 227 Elf64_Off e_shoff; /* Section header table file offset */ 228 Elf64_Word e_flags; 229 Elf64_Half e_ehsize; 230 Elf64_Half e_phentsize; 231 Elf64_Half e_phnum; 232 Elf64_Half e_shentsize; 233 Elf64_Half e_shnum; 234 Elf64_Half e_shstrndx; 235} Elf64_Ehdr; 236 237/* These constants define the permissions on sections in the program 238 header, p_flags. */ 239#define PF_R 0x4 240#define PF_W 0x2 241#define PF_X 0x1 242 243typedef struct elf32_phdr{ 244 Elf32_Word p_type; 245 Elf32_Off p_offset; 246 Elf32_Addr p_vaddr; 247 Elf32_Addr p_paddr; 248 Elf32_Word p_filesz; 249 Elf32_Word p_memsz; 250 Elf32_Word p_flags; 251 Elf32_Word p_align; 252} Elf32_Phdr; 253 254typedef struct elf64_phdr { 255 Elf64_Word p_type; 256 Elf64_Word p_flags; 257 Elf64_Off p_offset; /* Segment file offset */ 258 Elf64_Addr p_vaddr; /* Segment virtual address */ 259 Elf64_Addr p_paddr; /* Segment physical address */ 260 Elf64_Xword p_filesz; /* Segment size in file */ 261 Elf64_Xword p_memsz; /* Segment size in memory */ 262 Elf64_Xword p_align; /* Segment alignment, file & memory */ 263} Elf64_Phdr; 264 265/* sh_type */ 266#define SHT_NULL 0 267#define SHT_PROGBITS 1 268#define SHT_SYMTAB 2 269#define SHT_STRTAB 3 270#define SHT_RELA 4 271#define SHT_HASH 5 272#define SHT_DYNAMIC 6 273#define SHT_NOTE 7 274#define SHT_NOBITS 8 275#define SHT_REL 9 276#define SHT_SHLIB 10 277#define SHT_DYNSYM 11 278#define SHT_NUM 12 279#define SHT_LOPROC 0x70000000 280#define SHT_HIPROC 0x7fffffff 281#define SHT_LOUSER 0x80000000 282#define SHT_HIUSER 0xffffffff 283 284/* sh_flags */ 285#define SHF_WRITE 0x1 286#define SHF_ALLOC 0x2 287#define SHF_EXECINSTR 0x4 288#define SHF_MASKPROC 0xf0000000 289 290/* special section indexes */ 291#define SHN_UNDEF 0 292#define SHN_LORESERVE 0xff00 293#define SHN_LOPROC 0xff00 294#define SHN_HIPROC 0xff1f 295#define SHN_ABS 0xfff1 296#define SHN_COMMON 0xfff2 297#define SHN_HIRESERVE 0xffff 298 299typedef struct elf32_shdr { 300 Elf32_Word sh_name; 301 Elf32_Word sh_type; 302 Elf32_Word sh_flags; 303 Elf32_Addr sh_addr; 304 Elf32_Off sh_offset; 305 Elf32_Word sh_size; 306 Elf32_Word sh_link; 307 Elf32_Word sh_info; 308 Elf32_Word sh_addralign; 309 Elf32_Word sh_entsize; 310} Elf32_Shdr; 311 312typedef struct elf64_shdr { 313 Elf64_Word sh_name; /* Section name, index in string tbl */ 314 Elf64_Word sh_type; /* Type of section */ 315 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 316 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 317 Elf64_Off sh_offset; /* Section file offset */ 318 Elf64_Xword sh_size; /* Size of section in bytes */ 319 Elf64_Word sh_link; /* Index of another section */ 320 Elf64_Word sh_info; /* Additional section information */ 321 Elf64_Xword sh_addralign; /* Section alignment */ 322 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 323} Elf64_Shdr; 324 325#define EI_MAG0 0 /* e_ident[] indexes */ 326#define EI_MAG1 1 327#define EI_MAG2 2 328#define EI_MAG3 3 329#define EI_CLASS 4 330#define EI_DATA 5 331#define EI_VERSION 6 332#define EI_OSABI 7 333#define EI_PAD 8 334 335#define ELFMAG0 0x7f /* EI_MAG */ 336#define ELFMAG1 'E' 337#define ELFMAG2 'L' 338#define ELFMAG3 'F' 339#define ELFMAG "\177ELF" 340#define SELFMAG 4 341 342#define ELFCLASSNONE 0 /* EI_CLASS */ 343#define ELFCLASS32 1 344#define ELFCLASS64 2 345#define ELFCLASSNUM 3 346 347#define ELFDATANONE 0 /* e_ident[EI_DATA] */ 348#define ELFDATA2LSB 1 349#define ELFDATA2MSB 2 350 351#define EV_NONE 0 /* e_version, EI_VERSION */ 352#define EV_CURRENT 1 353#define EV_NUM 2 354 355#define ELFOSABI_NONE 0 356#define ELFOSABI_LINUX 3 357 358#ifndef ELF_OSABI 359#define ELF_OSABI ELFOSABI_NONE 360#endif 361 362/* 363 * Notes used in ET_CORE. Architectures export some of the arch register sets 364 * using the corresponding note types via the PTRACE_GETREGSET and 365 * PTRACE_SETREGSET requests. 366 */ 367#define NT_PRSTATUS 1 368#define NT_PRFPREG 2 369#define NT_PRPSINFO 3 370#define NT_TASKSTRUCT 4 371#define NT_AUXV 6 372/* 373 * Note to userspace developers: size of NT_SIGINFO note may increase 374 * in the future to accomodate more fields, don't assume it is fixed! 375 */ 376#define NT_SIGINFO 0x53494749 377#define NT_FILE 0x46494c45 378#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 379#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ 380#define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ 381#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ 382#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ 383#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ 384#define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ 385#define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ 386#define NT_S390_TIMER 0x301 /* s390 timer register */ 387#define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ 388#define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ 389#define NT_S390_CTRS 0x304 /* s390 control registers */ 390#define NT_S390_PREFIX 0x305 /* s390 prefix register */ 391#define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ 392#define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */ 393#define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */ 394#define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ 395#define NT_ARM_TLS 0x401 /* ARM TLS register */ 396#define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */ 397#define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */ 398#define NT_METAG_CBUF 0x500 /* Metag catch buffer registers */ 399#define NT_METAG_RPIPE 0x501 /* Metag read pipeline state */ 400#define NT_METAG_TLS 0x502 /* Metag TLS pointer */ 401 402 403/* Note header in a PT_NOTE section */ 404typedef struct elf32_note { 405 Elf32_Word n_namesz; /* Name size */ 406 Elf32_Word n_descsz; /* Content size */ 407 Elf32_Word n_type; /* Content type */ 408} Elf32_Nhdr; 409 410/* Note header in a PT_NOTE section */ 411typedef struct elf64_note { 412 Elf64_Word n_namesz; /* Name size */ 413 Elf64_Word n_descsz; /* Content size */ 414 Elf64_Word n_type; /* Content type */ 415} Elf64_Nhdr; 416 417#endif /* _UAPI_LINUX_ELF_H */ 418