1 //===- llvm/BinaryFormat/ELF.h - ELF constants and structures ---*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This header contains common, non-processor-specific data structures and 10 // constants for the ELF file format. 11 // 12 // The details of the ELF32 bits in this file are largely based on the Tool 13 // Interface Standard (TIS) Executable and Linking Format (ELF) Specification 14 // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format 15 // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files. 16 // 17 //===----------------------------------------------------------------------===// 18 19 #ifndef LLVM_BINARYFORMAT_ELF_H 20 #define LLVM_BINARYFORMAT_ELF_H 21 22 #include <cstdint> 23 #include <cstring> 24 25 namespace llvm { 26 namespace ELF { 27 28 using Elf32_Addr = uint32_t; // Program address 29 using Elf32_Off = uint32_t; // File offset 30 using Elf32_Half = uint16_t; 31 using Elf32_Word = uint32_t; 32 using Elf32_Sword = int32_t; 33 34 using Elf64_Addr = uint64_t; 35 using Elf64_Off = uint64_t; 36 using Elf64_Half = uint16_t; 37 using Elf64_Word = uint32_t; 38 using Elf64_Sword = int32_t; 39 using Elf64_Xword = uint64_t; 40 using Elf64_Sxword = int64_t; 41 42 // Object file magic string. 43 static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'}; 44 45 // e_ident size and indices. 46 enum { 47 EI_MAG0 = 0, // File identification index. 48 EI_MAG1 = 1, // File identification index. 49 EI_MAG2 = 2, // File identification index. 50 EI_MAG3 = 3, // File identification index. 51 EI_CLASS = 4, // File class. 52 EI_DATA = 5, // Data encoding. 53 EI_VERSION = 6, // File version. 54 EI_OSABI = 7, // OS/ABI identification. 55 EI_ABIVERSION = 8, // ABI version. 56 EI_PAD = 9, // Start of padding bytes. 57 EI_NIDENT = 16 // Number of bytes in e_ident. 58 }; 59 60 struct Elf32_Ehdr { 61 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 62 Elf32_Half e_type; // Type of file (see ET_* below) 63 Elf32_Half e_machine; // Required architecture for this file (see EM_*) 64 Elf32_Word e_version; // Must be equal to 1 65 Elf32_Addr e_entry; // Address to jump to in order to start program 66 Elf32_Off e_phoff; // Program header table's file offset, in bytes 67 Elf32_Off e_shoff; // Section header table's file offset, in bytes 68 Elf32_Word e_flags; // Processor-specific flags 69 Elf32_Half e_ehsize; // Size of ELF header, in bytes 70 Elf32_Half e_phentsize; // Size of an entry in the program header table 71 Elf32_Half e_phnum; // Number of entries in the program header table 72 Elf32_Half e_shentsize; // Size of an entry in the section header table 73 Elf32_Half e_shnum; // Number of entries in the section header table 74 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 75 76 bool checkMagic() const { 77 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 78 } 79 80 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 81 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 82 }; 83 84 // 64-bit ELF header. Fields are the same as for ELF32, but with different 85 // types (see above). 86 struct Elf64_Ehdr { 87 unsigned char e_ident[EI_NIDENT]; 88 Elf64_Half e_type; 89 Elf64_Half e_machine; 90 Elf64_Word e_version; 91 Elf64_Addr e_entry; 92 Elf64_Off e_phoff; 93 Elf64_Off e_shoff; 94 Elf64_Word e_flags; 95 Elf64_Half e_ehsize; 96 Elf64_Half e_phentsize; 97 Elf64_Half e_phnum; 98 Elf64_Half e_shentsize; 99 Elf64_Half e_shnum; 100 Elf64_Half e_shstrndx; 101 102 bool checkMagic() const { 103 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 104 } 105 106 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 107 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 108 }; 109 110 // File types 111 enum { 112 ET_NONE = 0, // No file type 113 ET_REL = 1, // Relocatable file 114 ET_EXEC = 2, // Executable file 115 ET_DYN = 3, // Shared object file 116 ET_CORE = 4, // Core file 117 ET_LOPROC = 0xff00, // Beginning of processor-specific codes 118 ET_HIPROC = 0xffff // Processor-specific 119 }; 120 121 // Versioning 122 enum { EV_NONE = 0, EV_CURRENT = 1 }; 123 124 // Machine architectures 125 // See current registered ELF machine architectures at: 126 // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html 127 enum { 128 EM_NONE = 0, // No machine 129 EM_M32 = 1, // AT&T WE 32100 130 EM_SPARC = 2, // SPARC 131 EM_386 = 3, // Intel 386 132 EM_68K = 4, // Motorola 68000 133 EM_88K = 5, // Motorola 88000 134 EM_IAMCU = 6, // Intel MCU 135 EM_860 = 7, // Intel 80860 136 EM_MIPS = 8, // MIPS R3000 137 EM_S370 = 9, // IBM System/370 138 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian 139 EM_PARISC = 15, // Hewlett-Packard PA-RISC 140 EM_VPP500 = 17, // Fujitsu VPP500 141 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC 142 EM_960 = 19, // Intel 80960 143 EM_PPC = 20, // PowerPC 144 EM_PPC64 = 21, // PowerPC64 145 EM_S390 = 22, // IBM System/390 146 EM_SPU = 23, // IBM SPU/SPC 147 EM_V800 = 36, // NEC V800 148 EM_FR20 = 37, // Fujitsu FR20 149 EM_RH32 = 38, // TRW RH-32 150 EM_RCE = 39, // Motorola RCE 151 EM_ARM = 40, // ARM 152 EM_ALPHA = 41, // DEC Alpha 153 EM_SH = 42, // Hitachi SH 154 EM_SPARCV9 = 43, // SPARC V9 155 EM_TRICORE = 44, // Siemens TriCore 156 EM_ARC = 45, // Argonaut RISC Core 157 EM_H8_300 = 46, // Hitachi H8/300 158 EM_H8_300H = 47, // Hitachi H8/300H 159 EM_H8S = 48, // Hitachi H8S 160 EM_H8_500 = 49, // Hitachi H8/500 161 EM_IA_64 = 50, // Intel IA-64 processor architecture 162 EM_MIPS_X = 51, // Stanford MIPS-X 163 EM_COLDFIRE = 52, // Motorola ColdFire 164 EM_68HC12 = 53, // Motorola M68HC12 165 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator 166 EM_PCP = 55, // Siemens PCP 167 EM_NCPU = 56, // Sony nCPU embedded RISC processor 168 EM_NDR1 = 57, // Denso NDR1 microprocessor 169 EM_STARCORE = 58, // Motorola Star*Core processor 170 EM_ME16 = 59, // Toyota ME16 processor 171 EM_ST100 = 60, // STMicroelectronics ST100 processor 172 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family 173 EM_X86_64 = 62, // AMD x86-64 architecture 174 EM_PDSP = 63, // Sony DSP Processor 175 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 176 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 177 EM_FX66 = 66, // Siemens FX66 microcontroller 178 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller 179 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller 180 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller 181 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller 182 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller 183 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller 184 EM_SVX = 73, // Silicon Graphics SVx 185 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller 186 EM_VAX = 75, // Digital VAX 187 EM_CRIS = 76, // Axis Communications 32-bit embedded processor 188 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor 189 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor 190 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor 191 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor 192 EM_HUANY = 81, // Harvard University machine-independent object files 193 EM_PRISM = 82, // SiTera Prism 194 EM_AVR = 83, // Atmel AVR 8-bit microcontroller 195 EM_FR30 = 84, // Fujitsu FR30 196 EM_D10V = 85, // Mitsubishi D10V 197 EM_D30V = 86, // Mitsubishi D30V 198 EM_V850 = 87, // NEC v850 199 EM_M32R = 88, // Mitsubishi M32R 200 EM_MN10300 = 89, // Matsushita MN10300 201 EM_MN10200 = 90, // Matsushita MN10200 202 EM_PJ = 91, // picoJava 203 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor 204 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old 205 // spelling/synonym: EM_ARC_A5) 206 EM_XTENSA = 94, // Tensilica Xtensa Architecture 207 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor 208 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor 209 EM_NS32K = 97, // National Semiconductor 32000 series 210 EM_TPC = 98, // Tenor Network TPC processor 211 EM_SNP1K = 99, // Trebia SNP 1000 processor 212 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 213 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family 214 EM_MAX = 102, // MAX Processor 215 EM_CR = 103, // National Semiconductor CompactRISC microprocessor 216 EM_F2MC16 = 104, // Fujitsu F2MC16 217 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 218 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor 219 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors 220 EM_SEP = 108, // Sharp embedded microprocessor 221 EM_ARCA = 109, // Arca RISC Microprocessor 222 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC 223 // of Peking University 224 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU 225 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor 226 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor 227 EM_CRX = 114, // National Semiconductor CompactRISC CRX 228 EM_XGATE = 115, // Motorola XGATE embedded processor 229 EM_C166 = 116, // Infineon C16x/XC16x processor 230 EM_M16C = 117, // Renesas M16C series microprocessors 231 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal 232 // Controller 233 EM_CE = 119, // Freescale Communication Engine RISC core 234 EM_M32C = 120, // Renesas M32C series microprocessors 235 EM_TSK3000 = 131, // Altium TSK3000 core 236 EM_RS08 = 132, // Freescale RS08 embedded processor 237 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP 238 // processors 239 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor 240 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor 241 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor 242 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor 243 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture 244 EM_SE_C17 = 139, // Seiko Epson C17 family 245 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family 246 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family 247 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family 248 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor 249 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor 250 EM_R32C = 162, // Renesas R32C series microprocessors 251 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family 252 EM_HEXAGON = 164, // Qualcomm Hexagon processor 253 EM_8051 = 165, // Intel 8051 and variants 254 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable 255 // and extensible RISC processors 256 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC 257 // processor family 258 EM_ECOG1 = 168, // Cyan Technology eCOG1X family 259 EM_ECOG1X = 168, // Cyan Technology eCOG1X family 260 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers 261 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor 262 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor 263 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture 264 EM_RX = 173, // Renesas RX family 265 EM_METAG = 174, // Imagination Technologies META processor 266 // architecture 267 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture 268 EM_ECOG16 = 176, // Cyan Technology eCOG16 family 269 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit 270 // microprocessor 271 EM_ETPU = 178, // Freescale Extended Time Processing Unit 272 EM_SLE9X = 179, // Infineon Technologies SLE9X core 273 EM_L10M = 180, // Intel L10M 274 EM_K10M = 181, // Intel K10M 275 EM_AARCH64 = 183, // ARM AArch64 276 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family 277 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller 278 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family 279 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family 280 EM_CUDA = 190, // NVIDIA CUDA architecture 281 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family 282 EM_CLOUDSHIELD = 192, // CloudShield architecture family 283 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family 284 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family 285 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 286 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core 287 EM_RL78 = 197, // Renesas RL78 family 288 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor 289 EM_78KOR = 199, // Renesas 78KOR family 290 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) 291 EM_BA1 = 201, // Beyond BA1 CPU architecture 292 EM_BA2 = 202, // Beyond BA2 CPU architecture 293 EM_XCORE = 203, // XMOS xCORE processor family 294 EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family 295 EM_INTEL205 = 205, // Reserved by Intel 296 EM_INTEL206 = 206, // Reserved by Intel 297 EM_INTEL207 = 207, // Reserved by Intel 298 EM_INTEL208 = 208, // Reserved by Intel 299 EM_INTEL209 = 209, // Reserved by Intel 300 EM_KM32 = 210, // KM211 KM32 32-bit processor 301 EM_KMX32 = 211, // KM211 KMX32 32-bit processor 302 EM_KMX16 = 212, // KM211 KMX16 16-bit processor 303 EM_KMX8 = 213, // KM211 KMX8 8-bit processor 304 EM_KVARC = 214, // KM211 KVARC processor 305 EM_CDP = 215, // Paneve CDP architecture family 306 EM_COGE = 216, // Cognitive Smart Memory Processor 307 EM_COOL = 217, // iCelero CoolEngine 308 EM_NORC = 218, // Nanoradio Optimized RISC 309 EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family 310 EM_AMDGPU = 224, // AMD GPU architecture 311 EM_RISCV = 243, // RISC-V 312 EM_LANAI = 244, // Lanai 32-bit processor 313 EM_BPF = 247, // Linux kernel bpf virtual machine 314 EM_VE = 251, // NEC SX-Aurora VE 315 }; 316 317 // Object file classes. 318 enum { 319 ELFCLASSNONE = 0, 320 ELFCLASS32 = 1, // 32-bit object file 321 ELFCLASS64 = 2 // 64-bit object file 322 }; 323 324 // Object file byte orderings. 325 enum { 326 ELFDATANONE = 0, // Invalid data encoding. 327 ELFDATA2LSB = 1, // Little-endian object file 328 ELFDATA2MSB = 2 // Big-endian object file 329 }; 330 331 // OS ABI identification. 332 enum { 333 ELFOSABI_NONE = 0, // UNIX System V ABI 334 ELFOSABI_HPUX = 1, // HP-UX operating system 335 ELFOSABI_NETBSD = 2, // NetBSD 336 ELFOSABI_GNU = 3, // GNU/Linux 337 ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU. 338 ELFOSABI_HURD = 4, // GNU/Hurd 339 ELFOSABI_SOLARIS = 6, // Solaris 340 ELFOSABI_AIX = 7, // AIX 341 ELFOSABI_IRIX = 8, // IRIX 342 ELFOSABI_FREEBSD = 9, // FreeBSD 343 ELFOSABI_TRU64 = 10, // TRU64 UNIX 344 ELFOSABI_MODESTO = 11, // Novell Modesto 345 ELFOSABI_OPENBSD = 12, // OpenBSD 346 ELFOSABI_OPENVMS = 13, // OpenVMS 347 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 348 ELFOSABI_AROS = 15, // AROS 349 ELFOSABI_FENIXOS = 16, // FenixOS 350 ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI 351 ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI 352 ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime 353 ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime 354 ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime 355 ELFOSABI_ARM = 97, // ARM 356 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 357 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 358 ELFOSABI_STANDALONE = 255, // Standalone (embedded) application 359 ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI 360 }; 361 362 #define ELF_RELOC(name, value) name = value, 363 364 // X86_64 relocations. 365 enum { 366 #include "ELFRelocs/x86_64.def" 367 }; 368 369 // i386 relocations. 370 enum { 371 #include "ELFRelocs/i386.def" 372 }; 373 374 // ELF Relocation types for PPC32 375 enum { 376 #include "ELFRelocs/PowerPC.def" 377 }; 378 379 // Specific e_flags for PPC64 380 enum { 381 // e_flags bits specifying ABI: 382 // 1 for original ABI using function descriptors, 383 // 2 for revised ABI without function descriptors, 384 // 0 for unspecified or not using any features affected by the differences. 385 EF_PPC64_ABI = 3 386 }; 387 388 // Special values for the st_other field in the symbol table entry for PPC64. 389 enum { 390 STO_PPC64_LOCAL_BIT = 5, 391 STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT) 392 }; 393 static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) { 394 unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT; 395 return ((1 << Val) >> 2) << 2; 396 } 397 398 // ELF Relocation types for PPC64 399 enum { 400 #include "ELFRelocs/PowerPC64.def" 401 }; 402 403 // ELF Relocation types for AArch64 404 enum { 405 #include "ELFRelocs/AArch64.def" 406 }; 407 408 // Special values for the st_other field in the symbol table entry for AArch64. 409 enum { 410 // Symbol may follow different calling convention than base PCS. 411 STO_AARCH64_VARIANT_PCS = 0x80 412 }; 413 414 // ARM Specific e_flags 415 enum : unsigned { 416 EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5 417 EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5 418 EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5 419 EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5 420 EF_ARM_EABI_UNKNOWN = 0x00000000U, 421 EF_ARM_EABI_VER1 = 0x01000000U, 422 EF_ARM_EABI_VER2 = 0x02000000U, 423 EF_ARM_EABI_VER3 = 0x03000000U, 424 EF_ARM_EABI_VER4 = 0x04000000U, 425 EF_ARM_EABI_VER5 = 0x05000000U, 426 EF_ARM_EABIMASK = 0xFF000000U 427 }; 428 429 // ELF Relocation types for ARM 430 enum { 431 #include "ELFRelocs/ARM.def" 432 }; 433 434 // ARC Specific e_flags 435 enum : unsigned { 436 EF_ARC_MACH_MSK = 0x000000ff, 437 EF_ARC_OSABI_MSK = 0x00000f00, 438 E_ARC_MACH_ARC600 = 0x00000002, 439 E_ARC_MACH_ARC601 = 0x00000004, 440 E_ARC_MACH_ARC700 = 0x00000003, 441 EF_ARC_CPU_ARCV2EM = 0x00000005, 442 EF_ARC_CPU_ARCV2HS = 0x00000006, 443 E_ARC_OSABI_ORIG = 0x00000000, 444 E_ARC_OSABI_V2 = 0x00000200, 445 E_ARC_OSABI_V3 = 0x00000300, 446 E_ARC_OSABI_V4 = 0x00000400, 447 EF_ARC_PIC = 0x00000100 448 }; 449 450 // ELF Relocation types for ARC 451 enum { 452 #include "ELFRelocs/ARC.def" 453 }; 454 455 // AVR specific e_flags 456 enum : unsigned { 457 EF_AVR_ARCH_AVR1 = 1, 458 EF_AVR_ARCH_AVR2 = 2, 459 EF_AVR_ARCH_AVR25 = 25, 460 EF_AVR_ARCH_AVR3 = 3, 461 EF_AVR_ARCH_AVR31 = 31, 462 EF_AVR_ARCH_AVR35 = 35, 463 EF_AVR_ARCH_AVR4 = 4, 464 EF_AVR_ARCH_AVR5 = 5, 465 EF_AVR_ARCH_AVR51 = 51, 466 EF_AVR_ARCH_AVR6 = 6, 467 EF_AVR_ARCH_AVRTINY = 100, 468 EF_AVR_ARCH_XMEGA1 = 101, 469 EF_AVR_ARCH_XMEGA2 = 102, 470 EF_AVR_ARCH_XMEGA3 = 103, 471 EF_AVR_ARCH_XMEGA4 = 104, 472 EF_AVR_ARCH_XMEGA5 = 105, 473 EF_AVR_ARCH_XMEGA6 = 106, 474 EF_AVR_ARCH_XMEGA7 = 107 475 }; 476 477 // ELF Relocation types for AVR 478 enum { 479 #include "ELFRelocs/AVR.def" 480 }; 481 482 // Mips Specific e_flags 483 enum : unsigned { 484 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions 485 EF_MIPS_PIC = 0x00000002, // Position independent code 486 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code 487 EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI 488 EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine 489 // in 32-bit mode 490 EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine 491 // but uses 64-bit FP registers 492 EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding 493 494 // ABI flags 495 EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI 496 EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture. 497 EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode. 498 EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode. 499 EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant. 500 501 // MIPS machine variant 502 EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation. 503 EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900 504 EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010 505 EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100 506 EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650 507 EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120 508 EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181 509 EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1 510 EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon 511 EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr 512 EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2 513 EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3 514 EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400 515 EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900 516 EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500 517 EF_MIPS_MACH_9000 = 0x00990000, // Unknown 518 EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E 519 EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F 520 EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A 521 EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask 522 523 // ARCH_ASE 524 EF_MIPS_MICROMIPS = 0x02000000, // microMIPS 525 EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions 526 EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions 527 EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags 528 529 // ARCH 530 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set 531 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set 532 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set 533 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set 534 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set 535 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h 536 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h 537 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5 538 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5 539 EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6 540 EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6 541 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant 542 }; 543 544 // ELF Relocation types for Mips 545 enum { 546 #include "ELFRelocs/Mips.def" 547 }; 548 549 // Special values for the st_other field in the symbol table entry for MIPS. 550 enum { 551 STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional 552 STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record 553 STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC 554 STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips 555 STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16 556 }; 557 558 // .MIPS.options section descriptor kinds 559 enum { 560 ODK_NULL = 0, // Undefined 561 ODK_REGINFO = 1, // Register usage information 562 ODK_EXCEPTIONS = 2, // Exception processing options 563 ODK_PAD = 3, // Section padding options 564 ODK_HWPATCH = 4, // Hardware patches applied 565 ODK_FILL = 5, // Linker fill value 566 ODK_TAGS = 6, // Space for tool identification 567 ODK_HWAND = 7, // Hardware AND patches applied 568 ODK_HWOR = 8, // Hardware OR patches applied 569 ODK_GP_GROUP = 9, // GP group to use for text/data sections 570 ODK_IDENT = 10, // ID information 571 ODK_PAGESIZE = 11 // Page size information 572 }; 573 574 // Hexagon-specific e_flags 575 enum { 576 // Object processor version flags, bits[11:0] 577 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2 578 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3 579 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4 580 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5 581 EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55 582 EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60 583 EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62 584 EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65 585 EF_HEXAGON_MACH_V66 = 0x00000066, // Hexagon V66 586 EF_HEXAGON_MACH_V67 = 0x00000067, // Hexagon V67 587 EF_HEXAGON_MACH_V67T = 0x00008067, // Hexagon V67T 588 589 // Highest ISA version flags 590 EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0] 591 // of e_flags 592 EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA 593 EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA 594 EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA 595 EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA 596 EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA 597 EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA 598 EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA 599 EF_HEXAGON_ISA_V65 = 0x00000065, // Hexagon V65 ISA 600 EF_HEXAGON_ISA_V66 = 0x00000066, // Hexagon V66 ISA 601 EF_HEXAGON_ISA_V67 = 0x00000067, // Hexagon V67 ISA 602 }; 603 604 // Hexagon-specific section indexes for common small data 605 enum { 606 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes 607 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access 608 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access 609 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access 610 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access 611 }; 612 613 // ELF Relocation types for Hexagon 614 enum { 615 #include "ELFRelocs/Hexagon.def" 616 }; 617 618 // ELF Relocation type for Lanai. 619 enum { 620 #include "ELFRelocs/Lanai.def" 621 }; 622 623 // RISCV Specific e_flags 624 enum : unsigned { 625 EF_RISCV_RVC = 0x0001, 626 EF_RISCV_FLOAT_ABI = 0x0006, 627 EF_RISCV_FLOAT_ABI_SOFT = 0x0000, 628 EF_RISCV_FLOAT_ABI_SINGLE = 0x0002, 629 EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004, 630 EF_RISCV_FLOAT_ABI_QUAD = 0x0006, 631 EF_RISCV_RVE = 0x0008 632 }; 633 634 // ELF Relocation types for RISC-V 635 enum { 636 #include "ELFRelocs/RISCV.def" 637 }; 638 639 // ELF Relocation types for S390/zSeries 640 enum { 641 #include "ELFRelocs/SystemZ.def" 642 }; 643 644 // ELF Relocation type for Sparc. 645 enum { 646 #include "ELFRelocs/Sparc.def" 647 }; 648 649 // AMDGPU specific e_flags. 650 enum : unsigned { 651 // Processor selection mask for EF_AMDGPU_MACH_* values. 652 EF_AMDGPU_MACH = 0x0ff, 653 654 // Not specified processor. 655 EF_AMDGPU_MACH_NONE = 0x000, 656 657 // R600-based processors. 658 659 // Radeon HD 2000/3000 Series (R600). 660 EF_AMDGPU_MACH_R600_R600 = 0x001, 661 EF_AMDGPU_MACH_R600_R630 = 0x002, 662 EF_AMDGPU_MACH_R600_RS880 = 0x003, 663 EF_AMDGPU_MACH_R600_RV670 = 0x004, 664 // Radeon HD 4000 Series (R700). 665 EF_AMDGPU_MACH_R600_RV710 = 0x005, 666 EF_AMDGPU_MACH_R600_RV730 = 0x006, 667 EF_AMDGPU_MACH_R600_RV770 = 0x007, 668 // Radeon HD 5000 Series (Evergreen). 669 EF_AMDGPU_MACH_R600_CEDAR = 0x008, 670 EF_AMDGPU_MACH_R600_CYPRESS = 0x009, 671 EF_AMDGPU_MACH_R600_JUNIPER = 0x00a, 672 EF_AMDGPU_MACH_R600_REDWOOD = 0x00b, 673 EF_AMDGPU_MACH_R600_SUMO = 0x00c, 674 // Radeon HD 6000 Series (Northern Islands). 675 EF_AMDGPU_MACH_R600_BARTS = 0x00d, 676 EF_AMDGPU_MACH_R600_CAICOS = 0x00e, 677 EF_AMDGPU_MACH_R600_CAYMAN = 0x00f, 678 EF_AMDGPU_MACH_R600_TURKS = 0x010, 679 680 // Reserved for R600-based processors. 681 EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011, 682 EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f, 683 684 // First/last R600-based processors. 685 EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600, 686 EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS, 687 688 // AMDGCN-based processors. 689 690 // AMDGCN GFX6. 691 EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020, 692 EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021, 693 // AMDGCN GFX7. 694 EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022, 695 EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023, 696 EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024, 697 EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025, 698 EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026, 699 // AMDGCN GFX8. 700 EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028, 701 EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029, 702 EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a, 703 EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b, 704 // AMDGCN GFX9. 705 EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c, 706 EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d, 707 EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e, 708 EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f, 709 EF_AMDGPU_MACH_AMDGCN_GFX908 = 0x030, 710 EF_AMDGPU_MACH_AMDGCN_GFX909 = 0x031, 711 // AMDGCN GFX10. 712 EF_AMDGPU_MACH_AMDGCN_GFX1010 = 0x033, 713 EF_AMDGPU_MACH_AMDGCN_GFX1011 = 0x034, 714 EF_AMDGPU_MACH_AMDGCN_GFX1012 = 0x035, 715 EF_AMDGPU_MACH_AMDGCN_GFX1030 = 0x036, 716 717 // Reserved for AMDGCN-based processors. 718 EF_AMDGPU_MACH_AMDGCN_RESERVED0 = 0x027, 719 EF_AMDGPU_MACH_AMDGCN_RESERVED1 = 0x032, 720 721 // First/last AMDGCN-based processors. 722 EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600, 723 EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX1030, 724 725 // Indicates if the "xnack" target feature is enabled for all code contained 726 // in the object. 727 EF_AMDGPU_XNACK = 0x100, 728 // Indicates if the "sram-ecc" target feature is enabled for all code 729 // contained in the object. 730 EF_AMDGPU_SRAM_ECC = 0x200, 731 }; 732 733 // ELF Relocation types for AMDGPU 734 enum { 735 #include "ELFRelocs/AMDGPU.def" 736 }; 737 738 // ELF Relocation types for BPF 739 enum { 740 #include "ELFRelocs/BPF.def" 741 }; 742 743 // MSP430 specific e_flags 744 enum : unsigned { 745 EF_MSP430_MACH_MSP430x11 = 11, 746 EF_MSP430_MACH_MSP430x11x1 = 110, 747 EF_MSP430_MACH_MSP430x12 = 12, 748 EF_MSP430_MACH_MSP430x13 = 13, 749 EF_MSP430_MACH_MSP430x14 = 14, 750 EF_MSP430_MACH_MSP430x15 = 15, 751 EF_MSP430_MACH_MSP430x16 = 16, 752 EF_MSP430_MACH_MSP430x20 = 20, 753 EF_MSP430_MACH_MSP430x22 = 22, 754 EF_MSP430_MACH_MSP430x23 = 23, 755 EF_MSP430_MACH_MSP430x24 = 24, 756 EF_MSP430_MACH_MSP430x26 = 26, 757 EF_MSP430_MACH_MSP430x31 = 31, 758 EF_MSP430_MACH_MSP430x32 = 32, 759 EF_MSP430_MACH_MSP430x33 = 33, 760 EF_MSP430_MACH_MSP430x41 = 41, 761 EF_MSP430_MACH_MSP430x42 = 42, 762 EF_MSP430_MACH_MSP430x43 = 43, 763 EF_MSP430_MACH_MSP430x44 = 44, 764 EF_MSP430_MACH_MSP430X = 45, 765 EF_MSP430_MACH_MSP430x46 = 46, 766 EF_MSP430_MACH_MSP430x47 = 47, 767 EF_MSP430_MACH_MSP430x54 = 54, 768 }; 769 770 // ELF Relocation types for MSP430 771 enum { 772 #include "ELFRelocs/MSP430.def" 773 }; 774 775 // ELF Relocation type for VE. 776 enum { 777 #include "ELFRelocs/VE.def" 778 }; 779 780 #undef ELF_RELOC 781 782 // Section header. 783 struct Elf32_Shdr { 784 Elf32_Word sh_name; // Section name (index into string table) 785 Elf32_Word sh_type; // Section type (SHT_*) 786 Elf32_Word sh_flags; // Section flags (SHF_*) 787 Elf32_Addr sh_addr; // Address where section is to be loaded 788 Elf32_Off sh_offset; // File offset of section data, in bytes 789 Elf32_Word sh_size; // Size of section, in bytes 790 Elf32_Word sh_link; // Section type-specific header table index link 791 Elf32_Word sh_info; // Section type-specific extra information 792 Elf32_Word sh_addralign; // Section address alignment 793 Elf32_Word sh_entsize; // Size of records contained within the section 794 }; 795 796 // Section header for ELF64 - same fields as ELF32, different types. 797 struct Elf64_Shdr { 798 Elf64_Word sh_name; 799 Elf64_Word sh_type; 800 Elf64_Xword sh_flags; 801 Elf64_Addr sh_addr; 802 Elf64_Off sh_offset; 803 Elf64_Xword sh_size; 804 Elf64_Word sh_link; 805 Elf64_Word sh_info; 806 Elf64_Xword sh_addralign; 807 Elf64_Xword sh_entsize; 808 }; 809 810 // Special section indices. 811 enum { 812 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 813 SHN_LORESERVE = 0xff00, // Lowest reserved index 814 SHN_LOPROC = 0xff00, // Lowest processor-specific index 815 SHN_HIPROC = 0xff1f, // Highest processor-specific index 816 SHN_LOOS = 0xff20, // Lowest operating system-specific index 817 SHN_HIOS = 0xff3f, // Highest operating system-specific index 818 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 819 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 820 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 821 SHN_HIRESERVE = 0xffff // Highest reserved index 822 }; 823 824 // Section types. 825 enum : unsigned { 826 SHT_NULL = 0, // No associated section (inactive entry). 827 SHT_PROGBITS = 1, // Program-defined contents. 828 SHT_SYMTAB = 2, // Symbol table. 829 SHT_STRTAB = 3, // String table. 830 SHT_RELA = 4, // Relocation entries; explicit addends. 831 SHT_HASH = 5, // Symbol hash table. 832 SHT_DYNAMIC = 6, // Information for dynamic linking. 833 SHT_NOTE = 7, // Information about the file. 834 SHT_NOBITS = 8, // Data occupies no space in the file. 835 SHT_REL = 9, // Relocation entries; no explicit addends. 836 SHT_SHLIB = 10, // Reserved. 837 SHT_DYNSYM = 11, // Symbol table. 838 SHT_INIT_ARRAY = 14, // Pointers to initialization functions. 839 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 840 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 841 SHT_GROUP = 17, // Section group. 842 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. 843 // Experimental support for SHT_RELR sections. For details, see proposal 844 // at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg 845 SHT_RELR = 19, // Relocation entries; only offsets. 846 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 847 // Android packed relocation section types. 848 // https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37 849 SHT_ANDROID_REL = 0x60000001, 850 SHT_ANDROID_RELA = 0x60000002, 851 SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table. 852 SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options. 853 SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c02, // LLVM Call Graph Profile. 854 SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols 855 // for safe ICF. 856 SHT_LLVM_DEPENDENT_LIBRARIES = 857 0x6fff4c04, // LLVM Dependent Library Specifiers. 858 SHT_LLVM_SYMPART = 0x6fff4c05, // Symbol partition specification. 859 SHT_LLVM_PART_EHDR = 0x6fff4c06, // ELF header for loadable partition. 860 SHT_LLVM_PART_PHDR = 0x6fff4c07, // Phdrs for loadable partition. 861 // Android's experimental support for SHT_RELR sections. 862 // https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512 863 SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets. 864 SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes. 865 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table. 866 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. 867 SHT_GNU_verneed = 0x6ffffffe, // GNU version references. 868 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. 869 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 870 SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type. 871 // Fixme: All this is duplicated in MCSectionELF. Why?? 872 // Exception Index table 873 SHT_ARM_EXIDX = 0x70000001U, 874 // BPABI DLL dynamic linking pre-emption map 875 SHT_ARM_PREEMPTMAP = 0x70000002U, 876 // Object file compatibility attributes 877 SHT_ARM_ATTRIBUTES = 0x70000003U, 878 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 879 SHT_ARM_OVERLAYSECTION = 0x70000005U, 880 SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in 881 // this section based on their sizes 882 SHT_X86_64_UNWIND = 0x70000001, // Unwind information 883 884 SHT_MIPS_REGINFO = 0x70000006, // Register usage information 885 SHT_MIPS_OPTIONS = 0x7000000d, // General options 886 SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section. 887 SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information. 888 889 SHT_MSP430_ATTRIBUTES = 0x70000003U, 890 891 SHT_RISCV_ATTRIBUTES = 0x70000003U, 892 893 SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type. 894 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 895 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 896 }; 897 898 // Section flags. 899 enum : unsigned { 900 // Section data should be writable during execution. 901 SHF_WRITE = 0x1, 902 903 // Section occupies memory during program execution. 904 SHF_ALLOC = 0x2, 905 906 // Section contains executable machine instructions. 907 SHF_EXECINSTR = 0x4, 908 909 // The data in this section may be merged. 910 SHF_MERGE = 0x10, 911 912 // The data in this section is null-terminated strings. 913 SHF_STRINGS = 0x20, 914 915 // A field in this section holds a section header table index. 916 SHF_INFO_LINK = 0x40U, 917 918 // Adds special ordering requirements for link editors. 919 SHF_LINK_ORDER = 0x80U, 920 921 // This section requires special OS-specific processing to avoid incorrect 922 // behavior. 923 SHF_OS_NONCONFORMING = 0x100U, 924 925 // This section is a member of a section group. 926 SHF_GROUP = 0x200U, 927 928 // This section holds Thread-Local Storage. 929 SHF_TLS = 0x400U, 930 931 // Identifies a section containing compressed data. 932 SHF_COMPRESSED = 0x800U, 933 934 // This section is excluded from the final executable or shared library. 935 SHF_EXCLUDE = 0x80000000U, 936 937 // Start of target-specific flags. 938 939 SHF_MASKOS = 0x0ff00000, 940 941 // Bits indicating processor-specific flags. 942 SHF_MASKPROC = 0xf0000000, 943 944 /// All sections with the "d" flag are grouped together by the linker to form 945 /// the data section and the dp register is set to the start of the section by 946 /// the boot code. 947 XCORE_SHF_DP_SECTION = 0x10000000, 948 949 /// All sections with the "c" flag are grouped together by the linker to form 950 /// the constant pool and the cp register is set to the start of the constant 951 /// pool by the boot code. 952 XCORE_SHF_CP_SECTION = 0x20000000, 953 954 // If an object file section does not have this flag set, then it may not hold 955 // more than 2GB and can be freely referred to in objects using smaller code 956 // models. Otherwise, only objects using larger code models can refer to them. 957 // For example, a medium code model object can refer to data in a section that 958 // sets this flag besides being able to refer to data in a section that does 959 // not set it; likewise, a small code model object can refer only to code in a 960 // section that does not set this flag. 961 SHF_X86_64_LARGE = 0x10000000, 962 963 // All sections with the GPREL flag are grouped into a global data area 964 // for faster accesses 965 SHF_HEX_GPREL = 0x10000000, 966 967 // Section contains text/data which may be replicated in other sections. 968 // Linker must retain only one copy. 969 SHF_MIPS_NODUPES = 0x01000000, 970 971 // Linker must generate implicit hidden weak names. 972 SHF_MIPS_NAMES = 0x02000000, 973 974 // Section data local to process. 975 SHF_MIPS_LOCAL = 0x04000000, 976 977 // Do not strip this section. 978 SHF_MIPS_NOSTRIP = 0x08000000, 979 980 // Section must be part of global data area. 981 SHF_MIPS_GPREL = 0x10000000, 982 983 // This section should be merged. 984 SHF_MIPS_MERGE = 0x20000000, 985 986 // Address size to be inferred from section entry size. 987 SHF_MIPS_ADDR = 0x40000000, 988 989 // Section data is string data by default. 990 SHF_MIPS_STRING = 0x80000000, 991 992 // Make code section unreadable when in execute-only mode 993 SHF_ARM_PURECODE = 0x20000000 994 }; 995 996 // Section Group Flags 997 enum : unsigned { 998 GRP_COMDAT = 0x1, 999 GRP_MASKOS = 0x0ff00000, 1000 GRP_MASKPROC = 0xf0000000 1001 }; 1002 1003 // Symbol table entries for ELF32. 1004 struct Elf32_Sym { 1005 Elf32_Word st_name; // Symbol name (index into string table) 1006 Elf32_Addr st_value; // Value or address associated with the symbol 1007 Elf32_Word st_size; // Size of the symbol 1008 unsigned char st_info; // Symbol's type and binding attributes 1009 unsigned char st_other; // Must be zero; reserved 1010 Elf32_Half st_shndx; // Which section (header table index) it's defined in 1011 1012 // These accessors and mutators correspond to the ELF32_ST_BIND, 1013 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 1014 unsigned char getBinding() const { return st_info >> 4; } 1015 unsigned char getType() const { return st_info & 0x0f; } 1016 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1017 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1018 void setBindingAndType(unsigned char b, unsigned char t) { 1019 st_info = (b << 4) + (t & 0x0f); 1020 } 1021 }; 1022 1023 // Symbol table entries for ELF64. 1024 struct Elf64_Sym { 1025 Elf64_Word st_name; // Symbol name (index into string table) 1026 unsigned char st_info; // Symbol's type and binding attributes 1027 unsigned char st_other; // Must be zero; reserved 1028 Elf64_Half st_shndx; // Which section (header tbl index) it's defined in 1029 Elf64_Addr st_value; // Value or address associated with the symbol 1030 Elf64_Xword st_size; // Size of the symbol 1031 1032 // These accessors and mutators are identical to those defined for ELF32 1033 // symbol table entries. 1034 unsigned char getBinding() const { return st_info >> 4; } 1035 unsigned char getType() const { return st_info & 0x0f; } 1036 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1037 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1038 void setBindingAndType(unsigned char b, unsigned char t) { 1039 st_info = (b << 4) + (t & 0x0f); 1040 } 1041 }; 1042 1043 // The size (in bytes) of symbol table entries. 1044 enum { 1045 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 1046 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 1047 }; 1048 1049 // Symbol bindings. 1050 enum { 1051 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 1052 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 1053 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 1054 STB_GNU_UNIQUE = 10, 1055 STB_LOOS = 10, // Lowest operating system-specific binding type 1056 STB_HIOS = 12, // Highest operating system-specific binding type 1057 STB_LOPROC = 13, // Lowest processor-specific binding type 1058 STB_HIPROC = 15 // Highest processor-specific binding type 1059 }; 1060 1061 // Symbol types. 1062 enum { 1063 STT_NOTYPE = 0, // Symbol's type is not specified 1064 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 1065 STT_FUNC = 2, // Symbol is executable code (function, etc.) 1066 STT_SECTION = 3, // Symbol refers to a section 1067 STT_FILE = 4, // Local, absolute symbol that refers to a file 1068 STT_COMMON = 5, // An uninitialized common block 1069 STT_TLS = 6, // Thread local data object 1070 STT_GNU_IFUNC = 10, // GNU indirect function 1071 STT_LOOS = 10, // Lowest operating system-specific symbol type 1072 STT_HIOS = 12, // Highest operating system-specific symbol type 1073 STT_LOPROC = 13, // Lowest processor-specific symbol type 1074 STT_HIPROC = 15, // Highest processor-specific symbol type 1075 1076 // AMDGPU symbol types 1077 STT_AMDGPU_HSA_KERNEL = 10 1078 }; 1079 1080 enum { 1081 STV_DEFAULT = 0, // Visibility is specified by binding type 1082 STV_INTERNAL = 1, // Defined by processor supplements 1083 STV_HIDDEN = 2, // Not visible to other components 1084 STV_PROTECTED = 3 // Visible in other components but not preemptable 1085 }; 1086 1087 // Symbol number. 1088 enum { STN_UNDEF = 0 }; 1089 1090 // Special relocation symbols used in the MIPS64 ELF relocation entries 1091 enum { 1092 RSS_UNDEF = 0, // None 1093 RSS_GP = 1, // Value of gp 1094 RSS_GP0 = 2, // Value of gp used to create object being relocated 1095 RSS_LOC = 3 // Address of location being relocated 1096 }; 1097 1098 // Relocation entry, without explicit addend. 1099 struct Elf32_Rel { 1100 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1101 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1102 1103 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1104 // and ELF32_R_INFO macros defined in the ELF specification: 1105 Elf32_Word getSymbol() const { return (r_info >> 8); } 1106 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 1107 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1108 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1109 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1110 r_info = (s << 8) + t; 1111 } 1112 }; 1113 1114 // Relocation entry with explicit addend. 1115 struct Elf32_Rela { 1116 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1117 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1118 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 1119 1120 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1121 // and ELF32_R_INFO macros defined in the ELF specification: 1122 Elf32_Word getSymbol() const { return (r_info >> 8); } 1123 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 1124 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1125 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1126 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1127 r_info = (s << 8) + t; 1128 } 1129 }; 1130 1131 // Relocation entry without explicit addend or info (relative relocations only). 1132 typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations 1133 1134 // Relocation entry, without explicit addend. 1135 struct Elf64_Rel { 1136 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1137 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1138 1139 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1140 // and ELF64_R_INFO macros defined in the ELF specification: 1141 Elf64_Word getSymbol() const { return (r_info >> 32); } 1142 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1143 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1144 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1145 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1146 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1147 } 1148 }; 1149 1150 // Relocation entry with explicit addend. 1151 struct Elf64_Rela { 1152 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1153 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1154 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 1155 1156 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1157 // and ELF64_R_INFO macros defined in the ELF specification: 1158 Elf64_Word getSymbol() const { return (r_info >> 32); } 1159 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1160 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1161 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1162 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1163 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1164 } 1165 }; 1166 1167 // Relocation entry without explicit addend or info (relative relocations only). 1168 typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations 1169 1170 // Program header for ELF32. 1171 struct Elf32_Phdr { 1172 Elf32_Word p_type; // Type of segment 1173 Elf32_Off p_offset; // File offset where segment is located, in bytes 1174 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 1175 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 1176 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 1177 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 1178 Elf32_Word p_flags; // Segment flags 1179 Elf32_Word p_align; // Segment alignment constraint 1180 }; 1181 1182 // Program header for ELF64. 1183 struct Elf64_Phdr { 1184 Elf64_Word p_type; // Type of segment 1185 Elf64_Word p_flags; // Segment flags 1186 Elf64_Off p_offset; // File offset where segment is located, in bytes 1187 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 1188 Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific) 1189 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 1190 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 1191 Elf64_Xword p_align; // Segment alignment constraint 1192 }; 1193 1194 // Segment types. 1195 enum { 1196 PT_NULL = 0, // Unused segment. 1197 PT_LOAD = 1, // Loadable segment. 1198 PT_DYNAMIC = 2, // Dynamic linking information. 1199 PT_INTERP = 3, // Interpreter pathname. 1200 PT_NOTE = 4, // Auxiliary information. 1201 PT_SHLIB = 5, // Reserved. 1202 PT_PHDR = 6, // The program header table itself. 1203 PT_TLS = 7, // The thread-local storage template. 1204 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. 1205 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. 1206 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 1207 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type. 1208 1209 // x86-64 program header types. 1210 // These all contain stack unwind tables. 1211 PT_GNU_EH_FRAME = 0x6474e550, 1212 PT_SUNW_EH_FRAME = 0x6474e550, 1213 PT_SUNW_UNWIND = 0x6464e550, 1214 1215 PT_GNU_STACK = 0x6474e551, // Indicates stack executability. 1216 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation. 1217 PT_GNU_PROPERTY = 0x6474e553, // .note.gnu.property notes sections. 1218 1219 PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data. 1220 PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations. 1221 PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments. 1222 1223 // ARM program header types. 1224 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info 1225 // These all contain stack unwind tables. 1226 PT_ARM_EXIDX = 0x70000001, 1227 PT_ARM_UNWIND = 0x70000001, 1228 1229 // MIPS program header types. 1230 PT_MIPS_REGINFO = 0x70000000, // Register usage information. 1231 PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table. 1232 PT_MIPS_OPTIONS = 0x70000002, // Options segment. 1233 PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment. 1234 }; 1235 1236 // Segment flag bits. 1237 enum : unsigned { 1238 PF_X = 1, // Execute 1239 PF_W = 2, // Write 1240 PF_R = 4, // Read 1241 PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics. 1242 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. 1243 }; 1244 1245 // Dynamic table entry for ELF32. 1246 struct Elf32_Dyn { 1247 Elf32_Sword d_tag; // Type of dynamic table entry. 1248 union { 1249 Elf32_Word d_val; // Integer value of entry. 1250 Elf32_Addr d_ptr; // Pointer value of entry. 1251 } d_un; 1252 }; 1253 1254 // Dynamic table entry for ELF64. 1255 struct Elf64_Dyn { 1256 Elf64_Sxword d_tag; // Type of dynamic table entry. 1257 union { 1258 Elf64_Xword d_val; // Integer value of entry. 1259 Elf64_Addr d_ptr; // Pointer value of entry. 1260 } d_un; 1261 }; 1262 1263 // Dynamic table entry tags. 1264 enum { 1265 #define DYNAMIC_TAG(name, value) DT_##name = value, 1266 #include "DynamicTags.def" 1267 #undef DYNAMIC_TAG 1268 }; 1269 1270 // DT_FLAGS values. 1271 enum { 1272 DF_ORIGIN = 0x01, // The object may reference $ORIGIN. 1273 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe. 1274 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment. 1275 DF_BIND_NOW = 0x08, // Process all relocations on load. 1276 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. 1277 }; 1278 1279 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry. 1280 enum { 1281 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object. 1282 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object. 1283 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object. 1284 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object. 1285 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime. 1286 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object. 1287 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object. 1288 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled. 1289 DF_1_DIRECT = 0x00000100, // Direct binding enabled. 1290 DF_1_TRANS = 0x00000200, 1291 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose. 1292 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path. 1293 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed. 1294 DF_1_CONFALT = 0x00002000, // Configuration alternative created. 1295 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search. 1296 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time. 1297 DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time. 1298 DF_1_NODIRECT = 0x00020000, // Object has no-direct binding. 1299 DF_1_IGNMULDEF = 0x00040000, 1300 DF_1_NOKSYMS = 0x00080000, 1301 DF_1_NOHDR = 0x00100000, 1302 DF_1_EDITED = 0x00200000, // Object is modified after built. 1303 DF_1_NORELOC = 0x00400000, 1304 DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers. 1305 DF_1_GLOBAUDIT = 0x01000000, // Global auditing required. 1306 DF_1_SINGLETON = 0x02000000, // Singleton symbols are used. 1307 DF_1_PIE = 0x08000000, // Object is a position-independent executable. 1308 }; 1309 1310 // DT_MIPS_FLAGS values. 1311 enum { 1312 RHF_NONE = 0x00000000, // No flags. 1313 RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers. 1314 RHF_NOTPOT = 0x00000002, // Hash size is not a power of two. 1315 RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH. 1316 RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated. 1317 RHF_SGI_ONLY = 0x00000010, // SGI specific features. 1318 RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish 1319 // executing before any non-init 1320 // code in DSO is called. 1321 RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code. 1322 RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start 1323 // executing before any non-init 1324 // code in DSO is called. 1325 RHF_PIXIE = 0x00000100, // Generated by pixie. 1326 RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default. 1327 RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted 1328 RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted 1329 RHF_CORD = 0x00001000, // Generated by cord. 1330 RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved 1331 // undef symbols. 1332 RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order. 1333 }; 1334 1335 // ElfXX_VerDef structure version (GNU versioning) 1336 enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 }; 1337 1338 // VerDef Flags (ElfXX_VerDef::vd_flags) 1339 enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 }; 1340 1341 // Special constants for the version table. (SHT_GNU_versym/.gnu.version) 1342 enum { 1343 VER_NDX_LOCAL = 0, // Unversioned local symbol 1344 VER_NDX_GLOBAL = 1, // Unversioned global symbol 1345 VERSYM_VERSION = 0x7fff, // Version Index mask 1346 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) 1347 }; 1348 1349 // ElfXX_VerNeed structure version (GNU versioning) 1350 enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 }; 1351 1352 // SHT_NOTE section types 1353 enum { 1354 NT_FREEBSD_THRMISC = 7, 1355 NT_FREEBSD_PROCSTAT_PROC = 8, 1356 NT_FREEBSD_PROCSTAT_FILES = 9, 1357 NT_FREEBSD_PROCSTAT_VMMAP = 10, 1358 NT_FREEBSD_PROCSTAT_GROUPS = 11, 1359 NT_FREEBSD_PROCSTAT_UMASK = 12, 1360 NT_FREEBSD_PROCSTAT_RLIMIT = 13, 1361 NT_FREEBSD_PROCSTAT_OSREL = 14, 1362 NT_FREEBSD_PROCSTAT_PSSTRINGS = 15, 1363 NT_FREEBSD_PROCSTAT_AUXV = 16, 1364 }; 1365 1366 // Generic note types 1367 enum : unsigned { 1368 NT_VERSION = 1, 1369 NT_ARCH = 2, 1370 NT_GNU_BUILD_ATTRIBUTE_OPEN = 0x100, 1371 NT_GNU_BUILD_ATTRIBUTE_FUNC = 0x101, 1372 }; 1373 1374 // Core note types 1375 enum : unsigned { 1376 NT_PRSTATUS = 1, 1377 NT_FPREGSET = 2, 1378 NT_PRPSINFO = 3, 1379 NT_TASKSTRUCT = 4, 1380 NT_AUXV = 6, 1381 NT_PSTATUS = 10, 1382 NT_FPREGS = 12, 1383 NT_PSINFO = 13, 1384 NT_LWPSTATUS = 16, 1385 NT_LWPSINFO = 17, 1386 NT_WIN32PSTATUS = 18, 1387 1388 NT_PPC_VMX = 0x100, 1389 NT_PPC_VSX = 0x102, 1390 NT_PPC_TAR = 0x103, 1391 NT_PPC_PPR = 0x104, 1392 NT_PPC_DSCR = 0x105, 1393 NT_PPC_EBB = 0x106, 1394 NT_PPC_PMU = 0x107, 1395 NT_PPC_TM_CGPR = 0x108, 1396 NT_PPC_TM_CFPR = 0x109, 1397 NT_PPC_TM_CVMX = 0x10a, 1398 NT_PPC_TM_CVSX = 0x10b, 1399 NT_PPC_TM_SPR = 0x10c, 1400 NT_PPC_TM_CTAR = 0x10d, 1401 NT_PPC_TM_CPPR = 0x10e, 1402 NT_PPC_TM_CDSCR = 0x10f, 1403 1404 NT_386_TLS = 0x200, 1405 NT_386_IOPERM = 0x201, 1406 NT_X86_XSTATE = 0x202, 1407 1408 NT_S390_HIGH_GPRS = 0x300, 1409 NT_S390_TIMER = 0x301, 1410 NT_S390_TODCMP = 0x302, 1411 NT_S390_TODPREG = 0x303, 1412 NT_S390_CTRS = 0x304, 1413 NT_S390_PREFIX = 0x305, 1414 NT_S390_LAST_BREAK = 0x306, 1415 NT_S390_SYSTEM_CALL = 0x307, 1416 NT_S390_TDB = 0x308, 1417 NT_S390_VXRS_LOW = 0x309, 1418 NT_S390_VXRS_HIGH = 0x30a, 1419 NT_S390_GS_CB = 0x30b, 1420 NT_S390_GS_BC = 0x30c, 1421 1422 NT_ARM_VFP = 0x400, 1423 NT_ARM_TLS = 0x401, 1424 NT_ARM_HW_BREAK = 0x402, 1425 NT_ARM_HW_WATCH = 0x403, 1426 NT_ARM_SVE = 0x405, 1427 NT_ARM_PAC_MASK = 0x406, 1428 1429 NT_FILE = 0x46494c45, 1430 NT_PRXFPREG = 0x46e62b7f, 1431 NT_SIGINFO = 0x53494749, 1432 }; 1433 1434 // LLVM-specific notes. 1435 enum { 1436 NT_LLVM_HWASAN_GLOBALS = 3, 1437 }; 1438 1439 // GNU note types 1440 enum { 1441 NT_GNU_ABI_TAG = 1, 1442 NT_GNU_HWCAP = 2, 1443 NT_GNU_BUILD_ID = 3, 1444 NT_GNU_GOLD_VERSION = 4, 1445 NT_GNU_PROPERTY_TYPE_0 = 5, 1446 }; 1447 1448 // Property types used in GNU_PROPERTY_TYPE_0 notes. 1449 enum : unsigned { 1450 GNU_PROPERTY_STACK_SIZE = 1, 1451 GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2, 1452 GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000, 1453 GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002, 1454 GNU_PROPERTY_X86_ISA_1_NEEDED = 0xc0008000, 1455 GNU_PROPERTY_X86_FEATURE_2_NEEDED = 0xc0008001, 1456 GNU_PROPERTY_X86_ISA_1_USED = 0xc0010000, 1457 GNU_PROPERTY_X86_FEATURE_2_USED = 0xc0010001, 1458 }; 1459 1460 // aarch64 processor feature bits. 1461 enum : unsigned { 1462 GNU_PROPERTY_AARCH64_FEATURE_1_BTI = 1 << 0, 1463 GNU_PROPERTY_AARCH64_FEATURE_1_PAC = 1 << 1, 1464 }; 1465 1466 // x86 processor feature bits. 1467 enum : unsigned { 1468 GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0, 1469 GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1, 1470 1471 GNU_PROPERTY_X86_ISA_1_CMOV = 1 << 0, 1472 GNU_PROPERTY_X86_ISA_1_SSE = 1 << 1, 1473 GNU_PROPERTY_X86_ISA_1_SSE2 = 1 << 2, 1474 GNU_PROPERTY_X86_ISA_1_SSE3 = 1 << 3, 1475 GNU_PROPERTY_X86_ISA_1_SSSE3 = 1 << 4, 1476 GNU_PROPERTY_X86_ISA_1_SSE4_1 = 1 << 5, 1477 GNU_PROPERTY_X86_ISA_1_SSE4_2 = 1 << 6, 1478 GNU_PROPERTY_X86_ISA_1_AVX = 1 << 7, 1479 GNU_PROPERTY_X86_ISA_1_AVX2 = 1 << 8, 1480 GNU_PROPERTY_X86_ISA_1_FMA = 1 << 9, 1481 GNU_PROPERTY_X86_ISA_1_AVX512F = 1 << 10, 1482 GNU_PROPERTY_X86_ISA_1_AVX512CD = 1 << 11, 1483 GNU_PROPERTY_X86_ISA_1_AVX512ER = 1 << 12, 1484 GNU_PROPERTY_X86_ISA_1_AVX512PF = 1 << 13, 1485 GNU_PROPERTY_X86_ISA_1_AVX512VL = 1 << 14, 1486 GNU_PROPERTY_X86_ISA_1_AVX512DQ = 1 << 15, 1487 GNU_PROPERTY_X86_ISA_1_AVX512BW = 1 << 16, 1488 GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS = 1 << 17, 1489 GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW = 1 << 18, 1490 GNU_PROPERTY_X86_ISA_1_AVX512_BITALG = 1 << 19, 1491 GNU_PROPERTY_X86_ISA_1_AVX512_IFMA = 1 << 20, 1492 GNU_PROPERTY_X86_ISA_1_AVX512_VBMI = 1 << 21, 1493 GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2 = 1 << 22, 1494 GNU_PROPERTY_X86_ISA_1_AVX512_VNNI = 1 << 23, 1495 1496 GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0, 1497 GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1, 1498 GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2, 1499 GNU_PROPERTY_X86_FEATURE_2_XMM = 1 << 3, 1500 GNU_PROPERTY_X86_FEATURE_2_YMM = 1 << 4, 1501 GNU_PROPERTY_X86_FEATURE_2_ZMM = 1 << 5, 1502 GNU_PROPERTY_X86_FEATURE_2_FXSR = 1 << 6, 1503 GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7, 1504 GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8, 1505 GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9, 1506 }; 1507 1508 // AMDGPU-specific section indices. 1509 enum { 1510 SHN_AMDGPU_LDS = 0xff00, // Variable in LDS; symbol encoded like SHN_COMMON 1511 }; 1512 1513 // AMD specific notes. (Code Object V2) 1514 enum { 1515 // Note types with values between 0 and 9 (inclusive) are reserved. 1516 NT_AMD_AMDGPU_HSA_METADATA = 10, 1517 NT_AMD_AMDGPU_ISA = 11, 1518 NT_AMD_AMDGPU_PAL_METADATA = 12 1519 }; 1520 1521 // AMDGPU specific notes. (Code Object V3) 1522 enum { 1523 // Note types with values between 0 and 31 (inclusive) are reserved. 1524 NT_AMDGPU_METADATA = 32 1525 }; 1526 1527 enum { 1528 GNU_ABI_TAG_LINUX = 0, 1529 GNU_ABI_TAG_HURD = 1, 1530 GNU_ABI_TAG_SOLARIS = 2, 1531 GNU_ABI_TAG_FREEBSD = 3, 1532 GNU_ABI_TAG_NETBSD = 4, 1533 GNU_ABI_TAG_SYLLABLE = 5, 1534 GNU_ABI_TAG_NACL = 6, 1535 }; 1536 1537 constexpr const char *ELF_NOTE_GNU = "GNU"; 1538 1539 // Android packed relocation group flags. 1540 enum { 1541 RELOCATION_GROUPED_BY_INFO_FLAG = 1, 1542 RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2, 1543 RELOCATION_GROUPED_BY_ADDEND_FLAG = 4, 1544 RELOCATION_GROUP_HAS_ADDEND_FLAG = 8, 1545 }; 1546 1547 // Compressed section header for ELF32. 1548 struct Elf32_Chdr { 1549 Elf32_Word ch_type; 1550 Elf32_Word ch_size; 1551 Elf32_Word ch_addralign; 1552 }; 1553 1554 // Compressed section header for ELF64. 1555 struct Elf64_Chdr { 1556 Elf64_Word ch_type; 1557 Elf64_Word ch_reserved; 1558 Elf64_Xword ch_size; 1559 Elf64_Xword ch_addralign; 1560 }; 1561 1562 // Node header for ELF32. 1563 struct Elf32_Nhdr { 1564 Elf32_Word n_namesz; 1565 Elf32_Word n_descsz; 1566 Elf32_Word n_type; 1567 }; 1568 1569 // Node header for ELF64. 1570 struct Elf64_Nhdr { 1571 Elf64_Word n_namesz; 1572 Elf64_Word n_descsz; 1573 Elf64_Word n_type; 1574 }; 1575 1576 // Legal values for ch_type field of compressed section header. 1577 enum { 1578 ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm. 1579 ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific. 1580 ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific. 1581 ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific. 1582 ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific. 1583 }; 1584 1585 } // end namespace ELF 1586 } // end namespace llvm 1587 1588 #endif // LLVM_BINARYFORMAT_ELF_H 1589