1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_LINUX_ELF_H 3 #define _UAPI_LINUX_ELF_H 4 5 #include <linux/types.h> 6 #include <linux/elf-em.h> 7 8 /* 32-bit ELF base types. */ 9 typedef __u32 Elf32_Addr; 10 typedef __u16 Elf32_Half; 11 typedef __u32 Elf32_Off; 12 typedef __s32 Elf32_Sword; 13 typedef __u32 Elf32_Word; 14 15 /* 64-bit ELF base types. */ 16 typedef __u64 Elf64_Addr; 17 typedef __u16 Elf64_Half; 18 typedef __s16 Elf64_SHalf; 19 typedef __u64 Elf64_Off; 20 typedef __s32 Elf64_Sword; 21 typedef __u32 Elf64_Word; 22 typedef __u64 Elf64_Xword; 23 typedef __s64 Elf64_Sxword; 24 25 /* These constants are for the segment types stored in the image headers */ 26 #define PT_NULL 0 27 #define PT_LOAD 1 28 #define PT_DYNAMIC 2 29 #define PT_INTERP 3 30 #define PT_NOTE 4 31 #define PT_SHLIB 5 32 #define PT_PHDR 6 33 #define PT_TLS 7 /* Thread local storage segment */ 34 #define PT_LOOS 0x60000000 /* OS-specific */ 35 #define PT_HIOS 0x6fffffff /* OS-specific */ 36 #define PT_LOPROC 0x70000000 37 #define PT_HIPROC 0x7fffffff 38 #define PT_GNU_EH_FRAME 0x6474e550 39 40 #define PT_GNU_STACK (PT_LOOS + 0x474e551) 41 42 /* 43 * Extended Numbering 44 * 45 * If the real number of program header table entries is larger than 46 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the 47 * section header at index 0, and PN_XNUM is set to e_phnum 48 * field. Otherwise, the section header at index 0 is zero 49 * initialized, if it exists. 50 * 51 * Specifications are available in: 52 * 53 * - Oracle: Linker and Libraries. 54 * Part No: 817–1984–19, August 2011. 55 * http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf 56 * 57 * - System V ABI AMD64 Architecture Processor Supplement 58 * Draft Version 0.99.4, 59 * January 13, 2010. 60 * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf 61 */ 62 #define PN_XNUM 0xffff 63 64 /* These constants define the different elf file types */ 65 #define ET_NONE 0 66 #define ET_REL 1 67 #define ET_EXEC 2 68 #define ET_DYN 3 69 #define ET_CORE 4 70 #define ET_LOPROC 0xff00 71 #define ET_HIPROC 0xffff 72 73 /* This is the info that is needed to parse the dynamic section of the file */ 74 #define DT_NULL 0 75 #define DT_NEEDED 1 76 #define DT_PLTRELSZ 2 77 #define DT_PLTGOT 3 78 #define DT_HASH 4 79 #define DT_STRTAB 5 80 #define DT_SYMTAB 6 81 #define DT_RELA 7 82 #define DT_RELASZ 8 83 #define DT_RELAENT 9 84 #define DT_STRSZ 10 85 #define DT_SYMENT 11 86 #define DT_INIT 12 87 #define DT_FINI 13 88 #define DT_SONAME 14 89 #define DT_RPATH 15 90 #define DT_SYMBOLIC 16 91 #define DT_REL 17 92 #define DT_RELSZ 18 93 #define DT_RELENT 19 94 #define DT_PLTREL 20 95 #define DT_DEBUG 21 96 #define DT_TEXTREL 22 97 #define DT_JMPREL 23 98 #define DT_ENCODING 32 99 #define OLD_DT_LOOS 0x60000000 100 #define DT_LOOS 0x6000000d 101 #define DT_HIOS 0x6ffff000 102 #define DT_VALRNGLO 0x6ffffd00 103 #define DT_VALRNGHI 0x6ffffdff 104 #define DT_ADDRRNGLO 0x6ffffe00 105 #define DT_ADDRRNGHI 0x6ffffeff 106 #define DT_VERSYM 0x6ffffff0 107 #define DT_RELACOUNT 0x6ffffff9 108 #define DT_RELCOUNT 0x6ffffffa 109 #define DT_FLAGS_1 0x6ffffffb 110 #define DT_VERDEF 0x6ffffffc 111 #define DT_VERDEFNUM 0x6ffffffd 112 #define DT_VERNEED 0x6ffffffe 113 #define DT_VERNEEDNUM 0x6fffffff 114 #define OLD_DT_HIOS 0x6fffffff 115 #define DT_LOPROC 0x70000000 116 #define DT_HIPROC 0x7fffffff 117 118 /* This info is needed when parsing the symbol table */ 119 #define STB_LOCAL 0 120 #define STB_GLOBAL 1 121 #define STB_WEAK 2 122 123 #define STT_NOTYPE 0 124 #define STT_OBJECT 1 125 #define STT_FUNC 2 126 #define STT_SECTION 3 127 #define STT_FILE 4 128 #define STT_COMMON 5 129 #define STT_TLS 6 130 131 #define ELF_ST_BIND(x) ((x) >> 4) 132 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 133 #define ELF32_ST_BIND(x) ELF_ST_BIND(x) 134 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 135 #define ELF64_ST_BIND(x) ELF_ST_BIND(x) 136 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 137 138 typedef struct dynamic{ 139 Elf32_Sword d_tag; 140 union{ 141 Elf32_Sword d_val; 142 Elf32_Addr d_ptr; 143 } d_un; 144 } Elf32_Dyn; 145 146 typedef struct { 147 Elf64_Sxword d_tag; /* entry tag value */ 148 union { 149 Elf64_Xword d_val; 150 Elf64_Addr d_ptr; 151 } d_un; 152 } Elf64_Dyn; 153 154 /* The following are used with relocations */ 155 #define ELF32_R_SYM(x) ((x) >> 8) 156 #define ELF32_R_TYPE(x) ((x) & 0xff) 157 158 #define ELF64_R_SYM(i) ((i) >> 32) 159 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) 160 161 typedef struct elf32_rel { 162 Elf32_Addr r_offset; 163 Elf32_Word r_info; 164 } Elf32_Rel; 165 166 typedef struct elf64_rel { 167 Elf64_Addr r_offset; /* Location at which to apply the action */ 168 Elf64_Xword r_info; /* index and type of relocation */ 169 } Elf64_Rel; 170 171 typedef struct elf32_rela{ 172 Elf32_Addr r_offset; 173 Elf32_Word r_info; 174 Elf32_Sword r_addend; 175 } Elf32_Rela; 176 177 typedef struct elf64_rela { 178 Elf64_Addr r_offset; /* Location at which to apply the action */ 179 Elf64_Xword r_info; /* index and type of relocation */ 180 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 181 } Elf64_Rela; 182 183 typedef struct elf32_sym{ 184 Elf32_Word st_name; 185 Elf32_Addr st_value; 186 Elf32_Word st_size; 187 unsigned char st_info; 188 unsigned char st_other; 189 Elf32_Half st_shndx; 190 } Elf32_Sym; 191 192 typedef struct elf64_sym { 193 Elf64_Word st_name; /* Symbol name, index in string tbl */ 194 unsigned char st_info; /* Type and binding attributes */ 195 unsigned char st_other; /* No defined meaning, 0 */ 196 Elf64_Half st_shndx; /* Associated section index */ 197 Elf64_Addr st_value; /* Value of the symbol */ 198 Elf64_Xword st_size; /* Associated symbol size */ 199 } Elf64_Sym; 200 201 202 #define EI_NIDENT 16 203 204 typedef struct elf32_hdr{ 205 unsigned char e_ident[EI_NIDENT]; 206 Elf32_Half e_type; 207 Elf32_Half e_machine; 208 Elf32_Word e_version; 209 Elf32_Addr e_entry; /* Entry point */ 210 Elf32_Off e_phoff; 211 Elf32_Off e_shoff; 212 Elf32_Word e_flags; 213 Elf32_Half e_ehsize; 214 Elf32_Half e_phentsize; 215 Elf32_Half e_phnum; 216 Elf32_Half e_shentsize; 217 Elf32_Half e_shnum; 218 Elf32_Half e_shstrndx; 219 } Elf32_Ehdr; 220 221 typedef struct elf64_hdr { 222 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ 223 Elf64_Half e_type; 224 Elf64_Half e_machine; 225 Elf64_Word e_version; 226 Elf64_Addr e_entry; /* Entry point virtual address */ 227 Elf64_Off e_phoff; /* Program header table file offset */ 228 Elf64_Off e_shoff; /* Section header table file offset */ 229 Elf64_Word e_flags; 230 Elf64_Half e_ehsize; 231 Elf64_Half e_phentsize; 232 Elf64_Half e_phnum; 233 Elf64_Half e_shentsize; 234 Elf64_Half e_shnum; 235 Elf64_Half e_shstrndx; 236 } Elf64_Ehdr; 237 238 /* These constants define the permissions on sections in the program 239 header, p_flags. */ 240 #define PF_R 0x4 241 #define PF_W 0x2 242 #define PF_X 0x1 243 244 typedef struct elf32_phdr{ 245 Elf32_Word p_type; 246 Elf32_Off p_offset; 247 Elf32_Addr p_vaddr; 248 Elf32_Addr p_paddr; 249 Elf32_Word p_filesz; 250 Elf32_Word p_memsz; 251 Elf32_Word p_flags; 252 Elf32_Word p_align; 253 } Elf32_Phdr; 254 255 typedef struct elf64_phdr { 256 Elf64_Word p_type; 257 Elf64_Word p_flags; 258 Elf64_Off p_offset; /* Segment file offset */ 259 Elf64_Addr p_vaddr; /* Segment virtual address */ 260 Elf64_Addr p_paddr; /* Segment physical address */ 261 Elf64_Xword p_filesz; /* Segment size in file */ 262 Elf64_Xword p_memsz; /* Segment size in memory */ 263 Elf64_Xword p_align; /* Segment alignment, file & memory */ 264 } Elf64_Phdr; 265 266 /* sh_type */ 267 #define SHT_NULL 0 268 #define SHT_PROGBITS 1 269 #define SHT_SYMTAB 2 270 #define SHT_STRTAB 3 271 #define SHT_RELA 4 272 #define SHT_HASH 5 273 #define SHT_DYNAMIC 6 274 #define SHT_NOTE 7 275 #define SHT_NOBITS 8 276 #define SHT_REL 9 277 #define SHT_SHLIB 10 278 #define SHT_DYNSYM 11 279 #define SHT_NUM 12 280 #define SHT_LOPROC 0x70000000 281 #define SHT_HIPROC 0x7fffffff 282 #define SHT_LOUSER 0x80000000 283 #define SHT_HIUSER 0xffffffff 284 285 /* sh_flags */ 286 #define SHF_WRITE 0x1 287 #define SHF_ALLOC 0x2 288 #define SHF_EXECINSTR 0x4 289 #define SHF_RELA_LIVEPATCH 0x00100000 290 #define SHF_RO_AFTER_INIT 0x00200000 291 #define SHF_MASKPROC 0xf0000000 292 293 /* special section indexes */ 294 #define SHN_UNDEF 0 295 #define SHN_LORESERVE 0xff00 296 #define SHN_LOPROC 0xff00 297 #define SHN_HIPROC 0xff1f 298 #define SHN_LIVEPATCH 0xff20 299 #define SHN_ABS 0xfff1 300 #define SHN_COMMON 0xfff2 301 #define SHN_HIRESERVE 0xffff 302 303 typedef struct elf32_shdr { 304 Elf32_Word sh_name; 305 Elf32_Word sh_type; 306 Elf32_Word sh_flags; 307 Elf32_Addr sh_addr; 308 Elf32_Off sh_offset; 309 Elf32_Word sh_size; 310 Elf32_Word sh_link; 311 Elf32_Word sh_info; 312 Elf32_Word sh_addralign; 313 Elf32_Word sh_entsize; 314 } Elf32_Shdr; 315 316 typedef struct elf64_shdr { 317 Elf64_Word sh_name; /* Section name, index in string tbl */ 318 Elf64_Word sh_type; /* Type of section */ 319 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 320 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 321 Elf64_Off sh_offset; /* Section file offset */ 322 Elf64_Xword sh_size; /* Size of section in bytes */ 323 Elf64_Word sh_link; /* Index of another section */ 324 Elf64_Word sh_info; /* Additional section information */ 325 Elf64_Xword sh_addralign; /* Section alignment */ 326 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 327 } Elf64_Shdr; 328 329 #define EI_MAG0 0 /* e_ident[] indexes */ 330 #define EI_MAG1 1 331 #define EI_MAG2 2 332 #define EI_MAG3 3 333 #define EI_CLASS 4 334 #define EI_DATA 5 335 #define EI_VERSION 6 336 #define EI_OSABI 7 337 #define EI_PAD 8 338 339 #define ELFMAG0 0x7f /* EI_MAG */ 340 #define ELFMAG1 'E' 341 #define ELFMAG2 'L' 342 #define ELFMAG3 'F' 343 #define ELFMAG "\177ELF" 344 #define SELFMAG 4 345 346 #define ELFCLASSNONE 0 /* EI_CLASS */ 347 #define ELFCLASS32 1 348 #define ELFCLASS64 2 349 #define ELFCLASSNUM 3 350 351 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ 352 #define ELFDATA2LSB 1 353 #define ELFDATA2MSB 2 354 355 #define EV_NONE 0 /* e_version, EI_VERSION */ 356 #define EV_CURRENT 1 357 #define EV_NUM 2 358 359 #define ELFOSABI_NONE 0 360 #define ELFOSABI_LINUX 3 361 362 #ifndef ELF_OSABI 363 #define ELF_OSABI ELFOSABI_NONE 364 #endif 365 366 /* 367 * Notes used in ET_CORE. Architectures export some of the arch register sets 368 * using the corresponding note types via the PTRACE_GETREGSET and 369 * PTRACE_SETREGSET requests. 370 */ 371 #define NT_PRSTATUS 1 372 #define NT_PRFPREG 2 373 #define NT_PRPSINFO 3 374 #define NT_TASKSTRUCT 4 375 #define NT_AUXV 6 376 /* 377 * Note to userspace developers: size of NT_SIGINFO note may increase 378 * in the future to accomodate more fields, don't assume it is fixed! 379 */ 380 #define NT_SIGINFO 0x53494749 381 #define NT_FILE 0x46494c45 382 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 383 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ 384 #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ 385 #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ 386 #define NT_PPC_TAR 0x103 /* Target Address Register */ 387 #define NT_PPC_PPR 0x104 /* Program Priority Register */ 388 #define NT_PPC_DSCR 0x105 /* Data Stream Control Register */ 389 #define NT_PPC_EBB 0x106 /* Event Based Branch Registers */ 390 #define NT_PPC_PMU 0x107 /* Performance Monitor Registers */ 391 #define NT_PPC_TM_CGPR 0x108 /* TM checkpointed GPR Registers */ 392 #define NT_PPC_TM_CFPR 0x109 /* TM checkpointed FPR Registers */ 393 #define NT_PPC_TM_CVMX 0x10a /* TM checkpointed VMX Registers */ 394 #define NT_PPC_TM_CVSX 0x10b /* TM checkpointed VSX Registers */ 395 #define NT_PPC_TM_SPR 0x10c /* TM Special Purpose Registers */ 396 #define NT_PPC_TM_CTAR 0x10d /* TM checkpointed Target Address Register */ 397 #define NT_PPC_TM_CPPR 0x10e /* TM checkpointed Program Priority Register */ 398 #define NT_PPC_TM_CDSCR 0x10f /* TM checkpointed Data Stream Control Register */ 399 #define NT_PPC_PKEY 0x110 /* Memory Protection Keys registers */ 400 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ 401 #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ 402 #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ 403 #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ 404 #define NT_S390_TIMER 0x301 /* s390 timer register */ 405 #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ 406 #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ 407 #define NT_S390_CTRS 0x304 /* s390 control registers */ 408 #define NT_S390_PREFIX 0x305 /* s390 prefix register */ 409 #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ 410 #define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */ 411 #define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */ 412 #define NT_S390_VXRS_LOW 0x309 /* s390 vector registers 0-15 upper half */ 413 #define NT_S390_VXRS_HIGH 0x30a /* s390 vector registers 16-31 */ 414 #define NT_S390_GS_CB 0x30b /* s390 guarded storage registers */ 415 #define NT_S390_GS_BC 0x30c /* s390 guarded storage broadcast control block */ 416 #define NT_S390_RI_CB 0x30d /* s390 runtime instrumentation */ 417 #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ 418 #define NT_ARM_TLS 0x401 /* ARM TLS register */ 419 #define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */ 420 #define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */ 421 #define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */ 422 #define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension registers */ 423 #define NT_ARC_V2 0x600 /* ARCv2 accumulator/extra registers */ 424 #define NT_VMCOREDD 0x700 /* Vmcore Device Dump Note */ 425 #define NT_MIPS_DSP 0x800 /* MIPS DSP ASE registers */ 426 #define NT_MIPS_FP_MODE 0x801 /* MIPS floating-point mode */ 427 428 /* Note header in a PT_NOTE section */ 429 typedef struct elf32_note { 430 Elf32_Word n_namesz; /* Name size */ 431 Elf32_Word n_descsz; /* Content size */ 432 Elf32_Word n_type; /* Content type */ 433 } Elf32_Nhdr; 434 435 /* Note header in a PT_NOTE section */ 436 typedef struct elf64_note { 437 Elf64_Word n_namesz; /* Name size */ 438 Elf64_Word n_descsz; /* Content size */ 439 Elf64_Word n_type; /* Content type */ 440 } Elf64_Nhdr; 441 442 #endif /* _UAPI_LINUX_ELF_H */ 443