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 #define PT_GNU_PROPERTY 0x6474e553 40 41 #define PT_GNU_STACK (PT_LOOS + 0x474e551) 42 43 /* 44 * Extended Numbering 45 * 46 * If the real number of program header table entries is larger than 47 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the 48 * section header at index 0, and PN_XNUM is set to e_phnum 49 * field. Otherwise, the section header at index 0 is zero 50 * initialized, if it exists. 51 * 52 * Specifications are available in: 53 * 54 * - Oracle: Linker and Libraries. 55 * Part No: 817–1984–19, August 2011. 56 * https://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf 57 * 58 * - System V ABI AMD64 Architecture Processor Supplement 59 * Draft Version 0.99.4, 60 * January 13, 2010. 61 * http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf 62 */ 63 #define PN_XNUM 0xffff 64 65 /* These constants define the different elf file types */ 66 #define ET_NONE 0 67 #define ET_REL 1 68 #define ET_EXEC 2 69 #define ET_DYN 3 70 #define ET_CORE 4 71 #define ET_LOPROC 0xff00 72 #define ET_HIPROC 0xffff 73 74 /* This is the info that is needed to parse the dynamic section of the file */ 75 #define DT_NULL 0 76 #define DT_NEEDED 1 77 #define DT_PLTRELSZ 2 78 #define DT_PLTGOT 3 79 #define DT_HASH 4 80 #define DT_STRTAB 5 81 #define DT_SYMTAB 6 82 #define DT_RELA 7 83 #define DT_RELASZ 8 84 #define DT_RELAENT 9 85 #define DT_STRSZ 10 86 #define DT_SYMENT 11 87 #define DT_INIT 12 88 #define DT_FINI 13 89 #define DT_SONAME 14 90 #define DT_RPATH 15 91 #define DT_SYMBOLIC 16 92 #define DT_REL 17 93 #define DT_RELSZ 18 94 #define DT_RELENT 19 95 #define DT_PLTREL 20 96 #define DT_DEBUG 21 97 #define DT_TEXTREL 22 98 #define DT_JMPREL 23 99 #define DT_ENCODING 32 100 #define OLD_DT_LOOS 0x60000000 101 #define DT_LOOS 0x6000000d 102 #define DT_HIOS 0x6ffff000 103 #define DT_VALRNGLO 0x6ffffd00 104 #define DT_VALRNGHI 0x6ffffdff 105 #define DT_ADDRRNGLO 0x6ffffe00 106 #define DT_ADDRRNGHI 0x6ffffeff 107 #define DT_VERSYM 0x6ffffff0 108 #define DT_RELACOUNT 0x6ffffff9 109 #define DT_RELCOUNT 0x6ffffffa 110 #define DT_FLAGS_1 0x6ffffffb 111 #define DT_VERDEF 0x6ffffffc 112 #define DT_VERDEFNUM 0x6ffffffd 113 #define DT_VERNEED 0x6ffffffe 114 #define DT_VERNEEDNUM 0x6fffffff 115 #define OLD_DT_HIOS 0x6fffffff 116 #define DT_LOPROC 0x70000000 117 #define DT_HIPROC 0x7fffffff 118 119 /* This info is needed when parsing the symbol table */ 120 #define STB_LOCAL 0 121 #define STB_GLOBAL 1 122 #define STB_WEAK 2 123 124 #define STT_NOTYPE 0 125 #define STT_OBJECT 1 126 #define STT_FUNC 2 127 #define STT_SECTION 3 128 #define STT_FILE 4 129 #define STT_COMMON 5 130 #define STT_TLS 6 131 132 #define ELF_ST_BIND(x) ((x) >> 4) 133 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 134 #define ELF32_ST_BIND(x) ELF_ST_BIND(x) 135 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 136 #define ELF64_ST_BIND(x) ELF_ST_BIND(x) 137 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 138 139 typedef struct dynamic{ 140 Elf32_Sword d_tag; 141 union{ 142 Elf32_Sword d_val; 143 Elf32_Addr d_ptr; 144 } d_un; 145 } Elf32_Dyn; 146 147 typedef struct { 148 Elf64_Sxword d_tag; /* entry tag value */ 149 union { 150 Elf64_Xword d_val; 151 Elf64_Addr d_ptr; 152 } d_un; 153 } Elf64_Dyn; 154 155 /* The following are used with relocations */ 156 #define ELF32_R_SYM(x) ((x) >> 8) 157 #define ELF32_R_TYPE(x) ((x) & 0xff) 158 159 #define ELF64_R_SYM(i) ((i) >> 32) 160 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) 161 162 typedef struct elf32_rel { 163 Elf32_Addr r_offset; 164 Elf32_Word r_info; 165 } Elf32_Rel; 166 167 typedef struct elf64_rel { 168 Elf64_Addr r_offset; /* Location at which to apply the action */ 169 Elf64_Xword r_info; /* index and type of relocation */ 170 } Elf64_Rel; 171 172 typedef struct elf32_rela{ 173 Elf32_Addr r_offset; 174 Elf32_Word r_info; 175 Elf32_Sword r_addend; 176 } Elf32_Rela; 177 178 typedef struct elf64_rela { 179 Elf64_Addr r_offset; /* Location at which to apply the action */ 180 Elf64_Xword r_info; /* index and type of relocation */ 181 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 182 } Elf64_Rela; 183 184 typedef struct elf32_sym{ 185 Elf32_Word st_name; 186 Elf32_Addr st_value; 187 Elf32_Word st_size; 188 unsigned char st_info; 189 unsigned char st_other; 190 Elf32_Half st_shndx; 191 } Elf32_Sym; 192 193 typedef struct elf64_sym { 194 Elf64_Word st_name; /* Symbol name, index in string tbl */ 195 unsigned char st_info; /* Type and binding attributes */ 196 unsigned char st_other; /* No defined meaning, 0 */ 197 Elf64_Half st_shndx; /* Associated section index */ 198 Elf64_Addr st_value; /* Value of the symbol */ 199 Elf64_Xword st_size; /* Associated symbol size */ 200 } Elf64_Sym; 201 202 203 #define EI_NIDENT 16 204 205 typedef struct elf32_hdr{ 206 unsigned char e_ident[EI_NIDENT]; 207 Elf32_Half e_type; 208 Elf32_Half e_machine; 209 Elf32_Word e_version; 210 Elf32_Addr e_entry; /* Entry point */ 211 Elf32_Off e_phoff; 212 Elf32_Off e_shoff; 213 Elf32_Word e_flags; 214 Elf32_Half e_ehsize; 215 Elf32_Half e_phentsize; 216 Elf32_Half e_phnum; 217 Elf32_Half e_shentsize; 218 Elf32_Half e_shnum; 219 Elf32_Half e_shstrndx; 220 } Elf32_Ehdr; 221 222 typedef struct elf64_hdr { 223 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ 224 Elf64_Half e_type; 225 Elf64_Half e_machine; 226 Elf64_Word e_version; 227 Elf64_Addr e_entry; /* Entry point virtual address */ 228 Elf64_Off e_phoff; /* Program header table file offset */ 229 Elf64_Off e_shoff; /* Section header table file offset */ 230 Elf64_Word e_flags; 231 Elf64_Half e_ehsize; 232 Elf64_Half e_phentsize; 233 Elf64_Half e_phnum; 234 Elf64_Half e_shentsize; 235 Elf64_Half e_shnum; 236 Elf64_Half e_shstrndx; 237 } Elf64_Ehdr; 238 239 /* These constants define the permissions on sections in the program 240 header, p_flags. */ 241 #define PF_R 0x4 242 #define PF_W 0x2 243 #define PF_X 0x1 244 245 typedef struct elf32_phdr{ 246 Elf32_Word p_type; 247 Elf32_Off p_offset; 248 Elf32_Addr p_vaddr; 249 Elf32_Addr p_paddr; 250 Elf32_Word p_filesz; 251 Elf32_Word p_memsz; 252 Elf32_Word p_flags; 253 Elf32_Word p_align; 254 } Elf32_Phdr; 255 256 typedef struct elf64_phdr { 257 Elf64_Word p_type; 258 Elf64_Word p_flags; 259 Elf64_Off p_offset; /* Segment file offset */ 260 Elf64_Addr p_vaddr; /* Segment virtual address */ 261 Elf64_Addr p_paddr; /* Segment physical address */ 262 Elf64_Xword p_filesz; /* Segment size in file */ 263 Elf64_Xword p_memsz; /* Segment size in memory */ 264 Elf64_Xword p_align; /* Segment alignment, file & memory */ 265 } Elf64_Phdr; 266 267 /* sh_type */ 268 #define SHT_NULL 0 269 #define SHT_PROGBITS 1 270 #define SHT_SYMTAB 2 271 #define SHT_STRTAB 3 272 #define SHT_RELA 4 273 #define SHT_HASH 5 274 #define SHT_DYNAMIC 6 275 #define SHT_NOTE 7 276 #define SHT_NOBITS 8 277 #define SHT_REL 9 278 #define SHT_SHLIB 10 279 #define SHT_DYNSYM 11 280 #define SHT_NUM 12 281 #define SHT_LOPROC 0x70000000 282 #define SHT_HIPROC 0x7fffffff 283 #define SHT_LOUSER 0x80000000 284 #define SHT_HIUSER 0xffffffff 285 286 /* sh_flags */ 287 #define SHF_WRITE 0x1 288 #define SHF_ALLOC 0x2 289 #define SHF_EXECINSTR 0x4 290 #define SHF_RELA_LIVEPATCH 0x00100000 291 #define SHF_RO_AFTER_INIT 0x00200000 292 #define SHF_MASKPROC 0xf0000000 293 294 /* special section indexes */ 295 #define SHN_UNDEF 0 296 #define SHN_LORESERVE 0xff00 297 #define SHN_LOPROC 0xff00 298 #define SHN_HIPROC 0xff1f 299 #define SHN_LIVEPATCH 0xff20 300 #define SHN_ABS 0xfff1 301 #define SHN_COMMON 0xfff2 302 #define SHN_HIRESERVE 0xffff 303 304 typedef struct elf32_shdr { 305 Elf32_Word sh_name; 306 Elf32_Word sh_type; 307 Elf32_Word sh_flags; 308 Elf32_Addr sh_addr; 309 Elf32_Off sh_offset; 310 Elf32_Word sh_size; 311 Elf32_Word sh_link; 312 Elf32_Word sh_info; 313 Elf32_Word sh_addralign; 314 Elf32_Word sh_entsize; 315 } Elf32_Shdr; 316 317 typedef struct elf64_shdr { 318 Elf64_Word sh_name; /* Section name, index in string tbl */ 319 Elf64_Word sh_type; /* Type of section */ 320 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 321 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 322 Elf64_Off sh_offset; /* Section file offset */ 323 Elf64_Xword sh_size; /* Size of section in bytes */ 324 Elf64_Word sh_link; /* Index of another section */ 325 Elf64_Word sh_info; /* Additional section information */ 326 Elf64_Xword sh_addralign; /* Section alignment */ 327 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 328 } Elf64_Shdr; 329 330 #define EI_MAG0 0 /* e_ident[] indexes */ 331 #define EI_MAG1 1 332 #define EI_MAG2 2 333 #define EI_MAG3 3 334 #define EI_CLASS 4 335 #define EI_DATA 5 336 #define EI_VERSION 6 337 #define EI_OSABI 7 338 #define EI_PAD 8 339 340 #define ELFMAG0 0x7f /* EI_MAG */ 341 #define ELFMAG1 'E' 342 #define ELFMAG2 'L' 343 #define ELFMAG3 'F' 344 #define ELFMAG "\177ELF" 345 #define SELFMAG 4 346 347 #define ELFCLASSNONE 0 /* EI_CLASS */ 348 #define ELFCLASS32 1 349 #define ELFCLASS64 2 350 #define ELFCLASSNUM 3 351 352 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ 353 #define ELFDATA2LSB 1 354 #define ELFDATA2MSB 2 355 356 #define EV_NONE 0 /* e_version, EI_VERSION */ 357 #define EV_CURRENT 1 358 #define EV_NUM 2 359 360 #define ELFOSABI_NONE 0 361 #define ELFOSABI_LINUX 3 362 363 #ifndef ELF_OSABI 364 #define ELF_OSABI ELFOSABI_NONE 365 #endif 366 367 /* 368 * Notes used in ET_CORE. Architectures export some of the arch register sets 369 * using the corresponding note types via the PTRACE_GETREGSET and 370 * PTRACE_SETREGSET requests. 371 * The note name for all these is "LINUX". 372 */ 373 #define NT_PRSTATUS 1 374 #define NT_PRFPREG 2 375 #define NT_PRPSINFO 3 376 #define NT_TASKSTRUCT 4 377 #define NT_AUXV 6 378 /* 379 * Note to userspace developers: size of NT_SIGINFO note may increase 380 * in the future to accomodate more fields, don't assume it is fixed! 381 */ 382 #define NT_SIGINFO 0x53494749 383 #define NT_FILE 0x46494c45 384 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 385 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ 386 #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ 387 #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ 388 #define NT_PPC_TAR 0x103 /* Target Address Register */ 389 #define NT_PPC_PPR 0x104 /* Program Priority Register */ 390 #define NT_PPC_DSCR 0x105 /* Data Stream Control Register */ 391 #define NT_PPC_EBB 0x106 /* Event Based Branch Registers */ 392 #define NT_PPC_PMU 0x107 /* Performance Monitor Registers */ 393 #define NT_PPC_TM_CGPR 0x108 /* TM checkpointed GPR Registers */ 394 #define NT_PPC_TM_CFPR 0x109 /* TM checkpointed FPR Registers */ 395 #define NT_PPC_TM_CVMX 0x10a /* TM checkpointed VMX Registers */ 396 #define NT_PPC_TM_CVSX 0x10b /* TM checkpointed VSX Registers */ 397 #define NT_PPC_TM_SPR 0x10c /* TM Special Purpose Registers */ 398 #define NT_PPC_TM_CTAR 0x10d /* TM checkpointed Target Address Register */ 399 #define NT_PPC_TM_CPPR 0x10e /* TM checkpointed Program Priority Register */ 400 #define NT_PPC_TM_CDSCR 0x10f /* TM checkpointed Data Stream Control Register */ 401 #define NT_PPC_PKEY 0x110 /* Memory Protection Keys registers */ 402 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ 403 #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ 404 #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ 405 #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ 406 #define NT_S390_TIMER 0x301 /* s390 timer register */ 407 #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ 408 #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ 409 #define NT_S390_CTRS 0x304 /* s390 control registers */ 410 #define NT_S390_PREFIX 0x305 /* s390 prefix register */ 411 #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ 412 #define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */ 413 #define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */ 414 #define NT_S390_VXRS_LOW 0x309 /* s390 vector registers 0-15 upper half */ 415 #define NT_S390_VXRS_HIGH 0x30a /* s390 vector registers 16-31 */ 416 #define NT_S390_GS_CB 0x30b /* s390 guarded storage registers */ 417 #define NT_S390_GS_BC 0x30c /* s390 guarded storage broadcast control block */ 418 #define NT_S390_RI_CB 0x30d /* s390 runtime instrumentation */ 419 #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ 420 #define NT_ARM_TLS 0x401 /* ARM TLS register */ 421 #define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */ 422 #define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */ 423 #define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */ 424 #define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension registers */ 425 #define NT_ARM_PAC_MASK 0x406 /* ARM pointer authentication code masks */ 426 #define NT_ARM_PACA_KEYS 0x407 /* ARM pointer authentication address keys */ 427 #define NT_ARM_PACG_KEYS 0x408 /* ARM pointer authentication generic key */ 428 #define NT_ARM_TAGGED_ADDR_CTRL 0x409 /* arm64 tagged address control (prctl()) */ 429 #define NT_ARC_V2 0x600 /* ARCv2 accumulator/extra registers */ 430 #define NT_VMCOREDD 0x700 /* Vmcore Device Dump Note */ 431 #define NT_MIPS_DSP 0x800 /* MIPS DSP ASE registers */ 432 #define NT_MIPS_FP_MODE 0x801 /* MIPS floating-point mode */ 433 #define NT_MIPS_MSA 0x802 /* MIPS SIMD registers */ 434 435 /* Note types with note name "GNU" */ 436 #define NT_GNU_PROPERTY_TYPE_0 5 437 438 /* Note header in a PT_NOTE section */ 439 typedef struct elf32_note { 440 Elf32_Word n_namesz; /* Name size */ 441 Elf32_Word n_descsz; /* Content size */ 442 Elf32_Word n_type; /* Content type */ 443 } Elf32_Nhdr; 444 445 /* Note header in a PT_NOTE section */ 446 typedef struct elf64_note { 447 Elf64_Word n_namesz; /* Name size */ 448 Elf64_Word n_descsz; /* Content size */ 449 Elf64_Word n_type; /* Content type */ 450 } Elf64_Nhdr; 451 452 /* .note.gnu.property types for EM_AARCH64: */ 453 #define GNU_PROPERTY_AARCH64_FEATURE_1_AND 0xc0000000 454 455 /* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */ 456 #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1U << 0) 457 458 #endif /* _UAPI_LINUX_ELF_H */ 459