1 //===- llvm/BinaryFormat/ELF.h - ELF constants and structures ---*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This header contains common, non-processor-specific data structures and 11 // constants for the ELF file format. 12 // 13 // The details of the ELF32 bits in this file are largely based on the Tool 14 // Interface Standard (TIS) Executable and Linking Format (ELF) Specification 15 // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format 16 // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files. 17 // 18 //===----------------------------------------------------------------------===// 19 20 #ifndef LLVM_BINARYFORMAT_ELF_H 21 #define LLVM_BINARYFORMAT_ELF_H 22 23 #include <cstdint> 24 #include <cstring> 25 26 namespace llvm { 27 namespace ELF { 28 29 using Elf32_Addr = uint32_t; // Program address 30 using Elf32_Off = uint32_t; // File offset 31 using Elf32_Half = uint16_t; 32 using Elf32_Word = uint32_t; 33 using Elf32_Sword = int32_t; 34 35 using Elf64_Addr = uint64_t; 36 using Elf64_Off = uint64_t; 37 using Elf64_Half = uint16_t; 38 using Elf64_Word = uint32_t; 39 using Elf64_Sword = int32_t; 40 using Elf64_Xword = uint64_t; 41 using Elf64_Sxword = int64_t; 42 43 // Object file magic string. 44 static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'}; 45 46 // e_ident size and indices. 47 enum { 48 EI_MAG0 = 0, // File identification index. 49 EI_MAG1 = 1, // File identification index. 50 EI_MAG2 = 2, // File identification index. 51 EI_MAG3 = 3, // File identification index. 52 EI_CLASS = 4, // File class. 53 EI_DATA = 5, // Data encoding. 54 EI_VERSION = 6, // File version. 55 EI_OSABI = 7, // OS/ABI identification. 56 EI_ABIVERSION = 8, // ABI version. 57 EI_PAD = 9, // Start of padding bytes. 58 EI_NIDENT = 16 // Number of bytes in e_ident. 59 }; 60 61 struct Elf32_Ehdr { 62 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 63 Elf32_Half e_type; // Type of file (see ET_* below) 64 Elf32_Half e_machine; // Required architecture for this file (see EM_*) 65 Elf32_Word e_version; // Must be equal to 1 66 Elf32_Addr e_entry; // Address to jump to in order to start program 67 Elf32_Off e_phoff; // Program header table's file offset, in bytes 68 Elf32_Off e_shoff; // Section header table's file offset, in bytes 69 Elf32_Word e_flags; // Processor-specific flags 70 Elf32_Half e_ehsize; // Size of ELF header, in bytes 71 Elf32_Half e_phentsize; // Size of an entry in the program header table 72 Elf32_Half e_phnum; // Number of entries in the program header table 73 Elf32_Half e_shentsize; // Size of an entry in the section header table 74 Elf32_Half e_shnum; // Number of entries in the section header table 75 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 76 77 bool checkMagic() const { 78 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 79 } 80 81 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 82 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 83 }; 84 85 // 64-bit ELF header. Fields are the same as for ELF32, but with different 86 // types (see above). 87 struct Elf64_Ehdr { 88 unsigned char e_ident[EI_NIDENT]; 89 Elf64_Half e_type; 90 Elf64_Half e_machine; 91 Elf64_Word e_version; 92 Elf64_Addr e_entry; 93 Elf64_Off e_phoff; 94 Elf64_Off e_shoff; 95 Elf64_Word e_flags; 96 Elf64_Half e_ehsize; 97 Elf64_Half e_phentsize; 98 Elf64_Half e_phnum; 99 Elf64_Half e_shentsize; 100 Elf64_Half e_shnum; 101 Elf64_Half e_shstrndx; 102 103 bool checkMagic() const { 104 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 105 } 106 107 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 108 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 109 }; 110 111 // File types 112 enum { 113 ET_NONE = 0, // No file type 114 ET_REL = 1, // Relocatable file 115 ET_EXEC = 2, // Executable file 116 ET_DYN = 3, // Shared object file 117 ET_CORE = 4, // Core file 118 ET_LOPROC = 0xff00, // Beginning of processor-specific codes 119 ET_HIPROC = 0xffff // Processor-specific 120 }; 121 122 // Versioning 123 enum { EV_NONE = 0, EV_CURRENT = 1 }; 124 125 // Machine architectures 126 // See current registered ELF machine architectures at: 127 // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html 128 enum { 129 EM_NONE = 0, // No machine 130 EM_M32 = 1, // AT&T WE 32100 131 EM_SPARC = 2, // SPARC 132 EM_386 = 3, // Intel 386 133 EM_68K = 4, // Motorola 68000 134 EM_88K = 5, // Motorola 88000 135 EM_IAMCU = 6, // Intel MCU 136 EM_860 = 7, // Intel 80860 137 EM_MIPS = 8, // MIPS R3000 138 EM_S370 = 9, // IBM System/370 139 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian 140 EM_PARISC = 15, // Hewlett-Packard PA-RISC 141 EM_VPP500 = 17, // Fujitsu VPP500 142 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC 143 EM_960 = 19, // Intel 80960 144 EM_PPC = 20, // PowerPC 145 EM_PPC64 = 21, // PowerPC64 146 EM_S390 = 22, // IBM System/390 147 EM_SPU = 23, // IBM SPU/SPC 148 EM_V800 = 36, // NEC V800 149 EM_FR20 = 37, // Fujitsu FR20 150 EM_RH32 = 38, // TRW RH-32 151 EM_RCE = 39, // Motorola RCE 152 EM_ARM = 40, // ARM 153 EM_ALPHA = 41, // DEC Alpha 154 EM_SH = 42, // Hitachi SH 155 EM_SPARCV9 = 43, // SPARC V9 156 EM_TRICORE = 44, // Siemens TriCore 157 EM_ARC = 45, // Argonaut RISC Core 158 EM_H8_300 = 46, // Hitachi H8/300 159 EM_H8_300H = 47, // Hitachi H8/300H 160 EM_H8S = 48, // Hitachi H8S 161 EM_H8_500 = 49, // Hitachi H8/500 162 EM_IA_64 = 50, // Intel IA-64 processor architecture 163 EM_MIPS_X = 51, // Stanford MIPS-X 164 EM_COLDFIRE = 52, // Motorola ColdFire 165 EM_68HC12 = 53, // Motorola M68HC12 166 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator 167 EM_PCP = 55, // Siemens PCP 168 EM_NCPU = 56, // Sony nCPU embedded RISC processor 169 EM_NDR1 = 57, // Denso NDR1 microprocessor 170 EM_STARCORE = 58, // Motorola Star*Core processor 171 EM_ME16 = 59, // Toyota ME16 processor 172 EM_ST100 = 60, // STMicroelectronics ST100 processor 173 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family 174 EM_X86_64 = 62, // AMD x86-64 architecture 175 EM_PDSP = 63, // Sony DSP Processor 176 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 177 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 178 EM_FX66 = 66, // Siemens FX66 microcontroller 179 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller 180 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller 181 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller 182 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller 183 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller 184 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller 185 EM_SVX = 73, // Silicon Graphics SVx 186 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller 187 EM_VAX = 75, // Digital VAX 188 EM_CRIS = 76, // Axis Communications 32-bit embedded processor 189 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor 190 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor 191 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor 192 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor 193 EM_HUANY = 81, // Harvard University machine-independent object files 194 EM_PRISM = 82, // SiTera Prism 195 EM_AVR = 83, // Atmel AVR 8-bit microcontroller 196 EM_FR30 = 84, // Fujitsu FR30 197 EM_D10V = 85, // Mitsubishi D10V 198 EM_D30V = 86, // Mitsubishi D30V 199 EM_V850 = 87, // NEC v850 200 EM_M32R = 88, // Mitsubishi M32R 201 EM_MN10300 = 89, // Matsushita MN10300 202 EM_MN10200 = 90, // Matsushita MN10200 203 EM_PJ = 91, // picoJava 204 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor 205 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old 206 // spelling/synonym: EM_ARC_A5) 207 EM_XTENSA = 94, // Tensilica Xtensa Architecture 208 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor 209 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor 210 EM_NS32K = 97, // National Semiconductor 32000 series 211 EM_TPC = 98, // Tenor Network TPC processor 212 EM_SNP1K = 99, // Trebia SNP 1000 processor 213 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 214 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family 215 EM_MAX = 102, // MAX Processor 216 EM_CR = 103, // National Semiconductor CompactRISC microprocessor 217 EM_F2MC16 = 104, // Fujitsu F2MC16 218 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 219 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor 220 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors 221 EM_SEP = 108, // Sharp embedded microprocessor 222 EM_ARCA = 109, // Arca RISC Microprocessor 223 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC 224 // of Peking University 225 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU 226 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor 227 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor 228 EM_CRX = 114, // National Semiconductor CompactRISC CRX 229 EM_XGATE = 115, // Motorola XGATE embedded processor 230 EM_C166 = 116, // Infineon C16x/XC16x processor 231 EM_M16C = 117, // Renesas M16C series microprocessors 232 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal 233 // Controller 234 EM_CE = 119, // Freescale Communication Engine RISC core 235 EM_M32C = 120, // Renesas M32C series microprocessors 236 EM_TSK3000 = 131, // Altium TSK3000 core 237 EM_RS08 = 132, // Freescale RS08 embedded processor 238 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP 239 // processors 240 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor 241 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor 242 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor 243 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor 244 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture 245 EM_SE_C17 = 139, // Seiko Epson C17 family 246 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family 247 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family 248 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family 249 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor 250 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor 251 EM_R32C = 162, // Renesas R32C series microprocessors 252 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family 253 EM_HEXAGON = 164, // Qualcomm Hexagon processor 254 EM_8051 = 165, // Intel 8051 and variants 255 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable 256 // and extensible RISC processors 257 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC 258 // processor family 259 EM_ECOG1 = 168, // Cyan Technology eCOG1X family 260 EM_ECOG1X = 168, // Cyan Technology eCOG1X family 261 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers 262 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor 263 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor 264 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture 265 EM_RX = 173, // Renesas RX family 266 EM_METAG = 174, // Imagination Technologies META processor 267 // architecture 268 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture 269 EM_ECOG16 = 176, // Cyan Technology eCOG16 family 270 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit 271 // microprocessor 272 EM_ETPU = 178, // Freescale Extended Time Processing Unit 273 EM_SLE9X = 179, // Infineon Technologies SLE9X core 274 EM_L10M = 180, // Intel L10M 275 EM_K10M = 181, // Intel K10M 276 EM_AARCH64 = 183, // ARM AArch64 277 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family 278 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller 279 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family 280 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family 281 EM_CUDA = 190, // NVIDIA CUDA architecture 282 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family 283 EM_CLOUDSHIELD = 192, // CloudShield architecture family 284 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family 285 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family 286 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 287 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core 288 EM_RL78 = 197, // Renesas RL78 family 289 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor 290 EM_78KOR = 199, // Renesas 78KOR family 291 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) 292 EM_BA1 = 201, // Beyond BA1 CPU architecture 293 EM_BA2 = 202, // Beyond BA2 CPU architecture 294 EM_XCORE = 203, // XMOS xCORE processor family 295 EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family 296 EM_INTEL205 = 205, // Reserved by Intel 297 EM_INTEL206 = 206, // Reserved by Intel 298 EM_INTEL207 = 207, // Reserved by Intel 299 EM_INTEL208 = 208, // Reserved by Intel 300 EM_INTEL209 = 209, // Reserved by Intel 301 EM_KM32 = 210, // KM211 KM32 32-bit processor 302 EM_KMX32 = 211, // KM211 KMX32 32-bit processor 303 EM_KMX16 = 212, // KM211 KMX16 16-bit processor 304 EM_KMX8 = 213, // KM211 KMX8 8-bit processor 305 EM_KVARC = 214, // KM211 KVARC processor 306 EM_CDP = 215, // Paneve CDP architecture family 307 EM_COGE = 216, // Cognitive Smart Memory Processor 308 EM_COOL = 217, // iCelero CoolEngine 309 EM_NORC = 218, // Nanoradio Optimized RISC 310 EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family 311 EM_AMDGPU = 224, // AMD GPU architecture 312 EM_RISCV = 243, // RISC-V 313 EM_LANAI = 244, // Lanai 32-bit processor 314 EM_BPF = 247, // Linux kernel bpf virtual machine 315 316 // A request has been made to the maintainer of the official registry for 317 // such numbers for an official value for WebAssembly. As soon as one is 318 // allocated, this enum will be updated to use it. 319 EM_WEBASSEMBLY = 0x4157, // WebAssembly architecture 320 }; 321 322 // Object file classes. 323 enum { 324 ELFCLASSNONE = 0, 325 ELFCLASS32 = 1, // 32-bit object file 326 ELFCLASS64 = 2 // 64-bit object file 327 }; 328 329 // Object file byte orderings. 330 enum { 331 ELFDATANONE = 0, // Invalid data encoding. 332 ELFDATA2LSB = 1, // Little-endian object file 333 ELFDATA2MSB = 2 // Big-endian object file 334 }; 335 336 // OS ABI identification. 337 enum { 338 ELFOSABI_NONE = 0, // UNIX System V ABI 339 ELFOSABI_HPUX = 1, // HP-UX operating system 340 ELFOSABI_NETBSD = 2, // NetBSD 341 ELFOSABI_GNU = 3, // GNU/Linux 342 ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU. 343 ELFOSABI_HURD = 4, // GNU/Hurd 344 ELFOSABI_SOLARIS = 6, // Solaris 345 ELFOSABI_AIX = 7, // AIX 346 ELFOSABI_IRIX = 8, // IRIX 347 ELFOSABI_FREEBSD = 9, // FreeBSD 348 ELFOSABI_TRU64 = 10, // TRU64 UNIX 349 ELFOSABI_MODESTO = 11, // Novell Modesto 350 ELFOSABI_OPENBSD = 12, // OpenBSD 351 ELFOSABI_OPENVMS = 13, // OpenVMS 352 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 353 ELFOSABI_AROS = 15, // AROS 354 ELFOSABI_FENIXOS = 16, // FenixOS 355 ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI 356 ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI 357 ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime 358 ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime 359 ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime 360 ELFOSABI_ARM = 97, // ARM 361 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 362 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 363 ELFOSABI_STANDALONE = 255, // Standalone (embedded) application 364 ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI 365 }; 366 367 #define ELF_RELOC(name, value) name = value, 368 369 // X86_64 relocations. 370 enum { 371 #include "ELFRelocs/x86_64.def" 372 }; 373 374 // i386 relocations. 375 enum { 376 #include "ELFRelocs/i386.def" 377 }; 378 379 // ELF Relocation types for PPC32 380 enum { 381 #include "ELFRelocs/PowerPC.def" 382 }; 383 384 // Specific e_flags for PPC64 385 enum { 386 // e_flags bits specifying ABI: 387 // 1 for original ABI using function descriptors, 388 // 2 for revised ABI without function descriptors, 389 // 0 for unspecified or not using any features affected by the differences. 390 EF_PPC64_ABI = 3 391 }; 392 393 // Special values for the st_other field in the symbol table entry for PPC64. 394 enum { 395 STO_PPC64_LOCAL_BIT = 5, 396 STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT) 397 }; 398 static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) { 399 unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT; 400 return ((1 << Val) >> 2) << 2; 401 } 402 static inline unsigned encodePPC64LocalEntryOffset(int64_t Offset) { 403 unsigned Val = 404 (Offset >= 4 * 4 ? (Offset >= 8 * 4 ? (Offset >= 16 * 4 ? 6 : 5) : 4) 405 : (Offset >= 2 * 4 ? 3 : (Offset >= 1 * 4 ? 2 : 0))); 406 return Val << STO_PPC64_LOCAL_BIT; 407 } 408 409 // ELF Relocation types for PPC64 410 enum { 411 #include "ELFRelocs/PowerPC64.def" 412 }; 413 414 // ELF Relocation types for AArch64 415 enum { 416 #include "ELFRelocs/AArch64.def" 417 }; 418 419 // ARM Specific e_flags 420 enum : unsigned { 421 EF_ARM_SOFT_FLOAT = 0x00000200U, 422 EF_ARM_VFP_FLOAT = 0x00000400U, 423 EF_ARM_EABI_UNKNOWN = 0x00000000U, 424 EF_ARM_EABI_VER1 = 0x01000000U, 425 EF_ARM_EABI_VER2 = 0x02000000U, 426 EF_ARM_EABI_VER3 = 0x03000000U, 427 EF_ARM_EABI_VER4 = 0x04000000U, 428 EF_ARM_EABI_VER5 = 0x05000000U, 429 EF_ARM_EABIMASK = 0xFF000000U 430 }; 431 432 // ELF Relocation types for ARM 433 enum { 434 #include "ELFRelocs/ARM.def" 435 }; 436 437 // ARC Specific e_flags 438 enum : unsigned { 439 EF_ARC_MACH_MSK = 0x000000ff, 440 EF_ARC_OSABI_MSK = 0x00000f00, 441 E_ARC_MACH_ARC600 = 0x00000002, 442 E_ARC_MACH_ARC601 = 0x00000004, 443 E_ARC_MACH_ARC700 = 0x00000003, 444 EF_ARC_CPU_ARCV2EM = 0x00000005, 445 EF_ARC_CPU_ARCV2HS = 0x00000006, 446 E_ARC_OSABI_ORIG = 0x00000000, 447 E_ARC_OSABI_V2 = 0x00000200, 448 E_ARC_OSABI_V3 = 0x00000300, 449 E_ARC_OSABI_V4 = 0x00000400, 450 EF_ARC_PIC = 0x00000100 451 }; 452 453 // ELF Relocation types for ARC 454 enum { 455 #include "ELFRelocs/ARC.def" 456 }; 457 458 // AVR specific e_flags 459 enum : unsigned { 460 EF_AVR_ARCH_AVR1 = 1, 461 EF_AVR_ARCH_AVR2 = 2, 462 EF_AVR_ARCH_AVR25 = 25, 463 EF_AVR_ARCH_AVR3 = 3, 464 EF_AVR_ARCH_AVR31 = 31, 465 EF_AVR_ARCH_AVR35 = 35, 466 EF_AVR_ARCH_AVR4 = 4, 467 EF_AVR_ARCH_AVR5 = 5, 468 EF_AVR_ARCH_AVR51 = 51, 469 EF_AVR_ARCH_AVR6 = 6, 470 EF_AVR_ARCH_AVRTINY = 100, 471 EF_AVR_ARCH_XMEGA1 = 101, 472 EF_AVR_ARCH_XMEGA2 = 102, 473 EF_AVR_ARCH_XMEGA3 = 103, 474 EF_AVR_ARCH_XMEGA4 = 104, 475 EF_AVR_ARCH_XMEGA5 = 105, 476 EF_AVR_ARCH_XMEGA6 = 106, 477 EF_AVR_ARCH_XMEGA7 = 107 478 }; 479 480 // ELF Relocation types for AVR 481 enum { 482 #include "ELFRelocs/AVR.def" 483 }; 484 485 // Mips Specific e_flags 486 enum : unsigned { 487 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions 488 EF_MIPS_PIC = 0x00000002, // Position independent code 489 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code 490 EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI 491 EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine 492 // in 32-bit mode 493 EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine 494 // but uses 64-bit FP registers 495 EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding 496 497 // ABI flags 498 EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI 499 EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture. 500 EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode. 501 EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode. 502 EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant. 503 504 // MIPS machine variant 505 EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation. 506 EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900 507 EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010 508 EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100 509 EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650 510 EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120 511 EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181 512 EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1 513 EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon 514 EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr 515 EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2 516 EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3 517 EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400 518 EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900 519 EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500 520 EF_MIPS_MACH_9000 = 0x00990000, // Unknown 521 EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E 522 EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F 523 EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A 524 EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask 525 526 // ARCH_ASE 527 EF_MIPS_MICROMIPS = 0x02000000, // microMIPS 528 EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions 529 EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions 530 EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags 531 532 // ARCH 533 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set 534 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set 535 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set 536 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set 537 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set 538 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h 539 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h 540 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5 541 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5 542 EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6 543 EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6 544 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant 545 }; 546 547 // ELF Relocation types for Mips 548 enum { 549 #include "ELFRelocs/Mips.def" 550 }; 551 552 // Special values for the st_other field in the symbol table entry for MIPS. 553 enum { 554 STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional 555 STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record 556 STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC 557 STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips 558 STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16 559 }; 560 561 // .MIPS.options section descriptor kinds 562 enum { 563 ODK_NULL = 0, // Undefined 564 ODK_REGINFO = 1, // Register usage information 565 ODK_EXCEPTIONS = 2, // Exception processing options 566 ODK_PAD = 3, // Section padding options 567 ODK_HWPATCH = 4, // Hardware patches applied 568 ODK_FILL = 5, // Linker fill value 569 ODK_TAGS = 6, // Space for tool identification 570 ODK_HWAND = 7, // Hardware AND patches applied 571 ODK_HWOR = 8, // Hardware OR patches applied 572 ODK_GP_GROUP = 9, // GP group to use for text/data sections 573 ODK_IDENT = 10, // ID information 574 ODK_PAGESIZE = 11 // Page size information 575 }; 576 577 // Hexagon-specific e_flags 578 enum { 579 // Object processor version flags, bits[11:0] 580 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2 581 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3 582 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4 583 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5 584 EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55 585 EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60 586 EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62 587 588 // Highest ISA version flags 589 EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0] 590 // of e_flags 591 EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA 592 EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA 593 EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA 594 EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA 595 EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA 596 EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA 597 EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA 598 }; 599 600 // Hexagon-specific section indexes for common small data 601 enum { 602 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes 603 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access 604 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access 605 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access 606 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access 607 }; 608 609 // ELF Relocation types for Hexagon 610 enum { 611 #include "ELFRelocs/Hexagon.def" 612 }; 613 614 // ELF Relocation type for Lanai. 615 enum { 616 #include "ELFRelocs/Lanai.def" 617 }; 618 619 // RISCV Specific e_flags 620 enum : unsigned { 621 EF_RISCV_RVC = 0x0001, 622 EF_RISCV_FLOAT_ABI = 0x0006, 623 EF_RISCV_FLOAT_ABI_SOFT = 0x0000, 624 EF_RISCV_FLOAT_ABI_SINGLE = 0x0002, 625 EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004, 626 EF_RISCV_FLOAT_ABI_QUAD = 0x0006, 627 EF_RISCV_RVE = 0x0008 628 }; 629 630 // ELF Relocation types for RISC-V 631 enum { 632 #include "ELFRelocs/RISCV.def" 633 }; 634 635 // ELF Relocation types for S390/zSeries 636 enum { 637 #include "ELFRelocs/SystemZ.def" 638 }; 639 640 // ELF Relocation type for Sparc. 641 enum { 642 #include "ELFRelocs/Sparc.def" 643 }; 644 645 // ELF Relocation types for WebAssembly 646 enum { 647 #include "ELFRelocs/WebAssembly.def" 648 }; 649 650 // AMDGPU specific e_flags. 651 enum : unsigned { 652 // AMDGPU machine architectures. 653 EF_AMDGPU_ARCH_NONE = 0x00000000, // None/unknown. 654 EF_AMDGPU_ARCH_R600 = 0x00000001, // AMD HD2XXX-HD6XXX GPUs. 655 EF_AMDGPU_ARCH_GCN = 0x00000002, // AMD GCN GFX6+ GPUs. 656 EF_AMDGPU_ARCH = 0x0000000f // EF_AMDGPU_ARCH_XXX selection mask. 657 }; 658 659 // ELF Relocation types for AMDGPU 660 enum { 661 #include "ELFRelocs/AMDGPU.def" 662 }; 663 664 // ELF Relocation types for BPF 665 enum { 666 #include "ELFRelocs/BPF.def" 667 }; 668 669 #undef ELF_RELOC 670 671 // Section header. 672 struct Elf32_Shdr { 673 Elf32_Word sh_name; // Section name (index into string table) 674 Elf32_Word sh_type; // Section type (SHT_*) 675 Elf32_Word sh_flags; // Section flags (SHF_*) 676 Elf32_Addr sh_addr; // Address where section is to be loaded 677 Elf32_Off sh_offset; // File offset of section data, in bytes 678 Elf32_Word sh_size; // Size of section, in bytes 679 Elf32_Word sh_link; // Section type-specific header table index link 680 Elf32_Word sh_info; // Section type-specific extra information 681 Elf32_Word sh_addralign; // Section address alignment 682 Elf32_Word sh_entsize; // Size of records contained within the section 683 }; 684 685 // Section header for ELF64 - same fields as ELF32, different types. 686 struct Elf64_Shdr { 687 Elf64_Word sh_name; 688 Elf64_Word sh_type; 689 Elf64_Xword sh_flags; 690 Elf64_Addr sh_addr; 691 Elf64_Off sh_offset; 692 Elf64_Xword sh_size; 693 Elf64_Word sh_link; 694 Elf64_Word sh_info; 695 Elf64_Xword sh_addralign; 696 Elf64_Xword sh_entsize; 697 }; 698 699 // Special section indices. 700 enum { 701 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 702 SHN_LORESERVE = 0xff00, // Lowest reserved index 703 SHN_LOPROC = 0xff00, // Lowest processor-specific index 704 SHN_HIPROC = 0xff1f, // Highest processor-specific index 705 SHN_LOOS = 0xff20, // Lowest operating system-specific index 706 SHN_HIOS = 0xff3f, // Highest operating system-specific index 707 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 708 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 709 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 710 SHN_HIRESERVE = 0xffff // Highest reserved index 711 }; 712 713 // Section types. 714 enum : unsigned { 715 SHT_NULL = 0, // No associated section (inactive entry). 716 SHT_PROGBITS = 1, // Program-defined contents. 717 SHT_SYMTAB = 2, // Symbol table. 718 SHT_STRTAB = 3, // String table. 719 SHT_RELA = 4, // Relocation entries; explicit addends. 720 SHT_HASH = 5, // Symbol hash table. 721 SHT_DYNAMIC = 6, // Information for dynamic linking. 722 SHT_NOTE = 7, // Information about the file. 723 SHT_NOBITS = 8, // Data occupies no space in the file. 724 SHT_REL = 9, // Relocation entries; no explicit addends. 725 SHT_SHLIB = 10, // Reserved. 726 SHT_DYNSYM = 11, // Symbol table. 727 SHT_INIT_ARRAY = 14, // Pointers to initialization functions. 728 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 729 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 730 SHT_GROUP = 17, // Section group. 731 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. 732 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 733 SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table. 734 SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes. 735 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table. 736 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. 737 SHT_GNU_verneed = 0x6ffffffe, // GNU version references. 738 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. 739 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 740 SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type. 741 // Fixme: All this is duplicated in MCSectionELF. Why?? 742 // Exception Index table 743 SHT_ARM_EXIDX = 0x70000001U, 744 // BPABI DLL dynamic linking pre-emption map 745 SHT_ARM_PREEMPTMAP = 0x70000002U, 746 // Object file compatibility attributes 747 SHT_ARM_ATTRIBUTES = 0x70000003U, 748 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 749 SHT_ARM_OVERLAYSECTION = 0x70000005U, 750 SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in 751 // this section based on their sizes 752 SHT_X86_64_UNWIND = 0x70000001, // Unwind information 753 754 SHT_MIPS_REGINFO = 0x70000006, // Register usage information 755 SHT_MIPS_OPTIONS = 0x7000000d, // General options 756 SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section. 757 SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information. 758 759 SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type. 760 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 761 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 762 }; 763 764 // Section flags. 765 enum : unsigned { 766 // Section data should be writable during execution. 767 SHF_WRITE = 0x1, 768 769 // Section occupies memory during program execution. 770 SHF_ALLOC = 0x2, 771 772 // Section contains executable machine instructions. 773 SHF_EXECINSTR = 0x4, 774 775 // The data in this section may be merged. 776 SHF_MERGE = 0x10, 777 778 // The data in this section is null-terminated strings. 779 SHF_STRINGS = 0x20, 780 781 // A field in this section holds a section header table index. 782 SHF_INFO_LINK = 0x40U, 783 784 // Adds special ordering requirements for link editors. 785 SHF_LINK_ORDER = 0x80U, 786 787 // This section requires special OS-specific processing to avoid incorrect 788 // behavior. 789 SHF_OS_NONCONFORMING = 0x100U, 790 791 // This section is a member of a section group. 792 SHF_GROUP = 0x200U, 793 794 // This section holds Thread-Local Storage. 795 SHF_TLS = 0x400U, 796 797 // Identifies a section containing compressed data. 798 SHF_COMPRESSED = 0x800U, 799 800 // This section is excluded from the final executable or shared library. 801 SHF_EXCLUDE = 0x80000000U, 802 803 // Start of target-specific flags. 804 805 SHF_MASKOS = 0x0ff00000, 806 807 // Bits indicating processor-specific flags. 808 SHF_MASKPROC = 0xf0000000, 809 810 /// All sections with the "d" flag are grouped together by the linker to form 811 /// the data section and the dp register is set to the start of the section by 812 /// the boot code. 813 XCORE_SHF_DP_SECTION = 0x10000000, 814 815 /// All sections with the "c" flag are grouped together by the linker to form 816 /// the constant pool and the cp register is set to the start of the constant 817 /// pool by the boot code. 818 XCORE_SHF_CP_SECTION = 0x20000000, 819 820 // If an object file section does not have this flag set, then it may not hold 821 // more than 2GB and can be freely referred to in objects using smaller code 822 // models. Otherwise, only objects using larger code models can refer to them. 823 // For example, a medium code model object can refer to data in a section that 824 // sets this flag besides being able to refer to data in a section that does 825 // not set it; likewise, a small code model object can refer only to code in a 826 // section that does not set this flag. 827 SHF_X86_64_LARGE = 0x10000000, 828 829 // All sections with the GPREL flag are grouped into a global data area 830 // for faster accesses 831 SHF_HEX_GPREL = 0x10000000, 832 833 // Section contains text/data which may be replicated in other sections. 834 // Linker must retain only one copy. 835 SHF_MIPS_NODUPES = 0x01000000, 836 837 // Linker must generate implicit hidden weak names. 838 SHF_MIPS_NAMES = 0x02000000, 839 840 // Section data local to process. 841 SHF_MIPS_LOCAL = 0x04000000, 842 843 // Do not strip this section. 844 SHF_MIPS_NOSTRIP = 0x08000000, 845 846 // Section must be part of global data area. 847 SHF_MIPS_GPREL = 0x10000000, 848 849 // This section should be merged. 850 SHF_MIPS_MERGE = 0x20000000, 851 852 // Address size to be inferred from section entry size. 853 SHF_MIPS_ADDR = 0x40000000, 854 855 // Section data is string data by default. 856 SHF_MIPS_STRING = 0x80000000, 857 858 // Make code section unreadable when in execute-only mode 859 SHF_ARM_PURECODE = 0x20000000 860 }; 861 862 // Section Group Flags 863 enum : unsigned { 864 GRP_COMDAT = 0x1, 865 GRP_MASKOS = 0x0ff00000, 866 GRP_MASKPROC = 0xf0000000 867 }; 868 869 // Symbol table entries for ELF32. 870 struct Elf32_Sym { 871 Elf32_Word st_name; // Symbol name (index into string table) 872 Elf32_Addr st_value; // Value or address associated with the symbol 873 Elf32_Word st_size; // Size of the symbol 874 unsigned char st_info; // Symbol's type and binding attributes 875 unsigned char st_other; // Must be zero; reserved 876 Elf32_Half st_shndx; // Which section (header table index) it's defined in 877 878 // These accessors and mutators correspond to the ELF32_ST_BIND, 879 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 880 unsigned char getBinding() const { return st_info >> 4; } 881 unsigned char getType() const { return st_info & 0x0f; } 882 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 883 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 884 void setBindingAndType(unsigned char b, unsigned char t) { 885 st_info = (b << 4) + (t & 0x0f); 886 } 887 }; 888 889 // Symbol table entries for ELF64. 890 struct Elf64_Sym { 891 Elf64_Word st_name; // Symbol name (index into string table) 892 unsigned char st_info; // Symbol's type and binding attributes 893 unsigned char st_other; // Must be zero; reserved 894 Elf64_Half st_shndx; // Which section (header tbl index) it's defined in 895 Elf64_Addr st_value; // Value or address associated with the symbol 896 Elf64_Xword st_size; // Size of the symbol 897 898 // These accessors and mutators are identical to those defined for ELF32 899 // symbol table entries. 900 unsigned char getBinding() const { return st_info >> 4; } 901 unsigned char getType() const { return st_info & 0x0f; } 902 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 903 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 904 void setBindingAndType(unsigned char b, unsigned char t) { 905 st_info = (b << 4) + (t & 0x0f); 906 } 907 }; 908 909 // The size (in bytes) of symbol table entries. 910 enum { 911 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 912 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 913 }; 914 915 // Symbol bindings. 916 enum { 917 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 918 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 919 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 920 STB_GNU_UNIQUE = 10, 921 STB_LOOS = 10, // Lowest operating system-specific binding type 922 STB_HIOS = 12, // Highest operating system-specific binding type 923 STB_LOPROC = 13, // Lowest processor-specific binding type 924 STB_HIPROC = 15 // Highest processor-specific binding type 925 }; 926 927 // Symbol types. 928 enum { 929 STT_NOTYPE = 0, // Symbol's type is not specified 930 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 931 STT_FUNC = 2, // Symbol is executable code (function, etc.) 932 STT_SECTION = 3, // Symbol refers to a section 933 STT_FILE = 4, // Local, absolute symbol that refers to a file 934 STT_COMMON = 5, // An uninitialized common block 935 STT_TLS = 6, // Thread local data object 936 STT_GNU_IFUNC = 10, // GNU indirect function 937 STT_LOOS = 10, // Lowest operating system-specific symbol type 938 STT_HIOS = 12, // Highest operating system-specific symbol type 939 STT_LOPROC = 13, // Lowest processor-specific symbol type 940 STT_HIPROC = 15, // Highest processor-specific symbol type 941 942 // AMDGPU symbol types 943 STT_AMDGPU_HSA_KERNEL = 10 944 }; 945 946 enum { 947 STV_DEFAULT = 0, // Visibility is specified by binding type 948 STV_INTERNAL = 1, // Defined by processor supplements 949 STV_HIDDEN = 2, // Not visible to other components 950 STV_PROTECTED = 3 // Visible in other components but not preemptable 951 }; 952 953 // Symbol number. 954 enum { STN_UNDEF = 0 }; 955 956 // Special relocation symbols used in the MIPS64 ELF relocation entries 957 enum { 958 RSS_UNDEF = 0, // None 959 RSS_GP = 1, // Value of gp 960 RSS_GP0 = 2, // Value of gp used to create object being relocated 961 RSS_LOC = 3 // Address of location being relocated 962 }; 963 964 // Relocation entry, without explicit addend. 965 struct Elf32_Rel { 966 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 967 Elf32_Word r_info; // Symbol table index and type of relocation to apply 968 969 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 970 // and ELF32_R_INFO macros defined in the ELF specification: 971 Elf32_Word getSymbol() const { return (r_info >> 8); } 972 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 973 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 974 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 975 void setSymbolAndType(Elf32_Word s, unsigned char t) { 976 r_info = (s << 8) + t; 977 } 978 }; 979 980 // Relocation entry with explicit addend. 981 struct Elf32_Rela { 982 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 983 Elf32_Word r_info; // Symbol table index and type of relocation to apply 984 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 985 986 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 987 // and ELF32_R_INFO macros defined in the ELF specification: 988 Elf32_Word getSymbol() const { return (r_info >> 8); } 989 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 990 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 991 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 992 void setSymbolAndType(Elf32_Word s, unsigned char t) { 993 r_info = (s << 8) + t; 994 } 995 }; 996 997 // Relocation entry, without explicit addend. 998 struct Elf64_Rel { 999 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1000 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1001 1002 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1003 // and ELF64_R_INFO macros defined in the ELF specification: 1004 Elf64_Word getSymbol() const { return (r_info >> 32); } 1005 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1006 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1007 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1008 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1009 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1010 } 1011 }; 1012 1013 // Relocation entry with explicit addend. 1014 struct Elf64_Rela { 1015 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1016 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1017 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 1018 1019 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1020 // and ELF64_R_INFO macros defined in the ELF specification: 1021 Elf64_Word getSymbol() const { return (r_info >> 32); } 1022 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1023 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1024 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1025 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1026 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1027 } 1028 }; 1029 1030 // Program header for ELF32. 1031 struct Elf32_Phdr { 1032 Elf32_Word p_type; // Type of segment 1033 Elf32_Off p_offset; // File offset where segment is located, in bytes 1034 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 1035 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 1036 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 1037 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 1038 Elf32_Word p_flags; // Segment flags 1039 Elf32_Word p_align; // Segment alignment constraint 1040 }; 1041 1042 // Program header for ELF64. 1043 struct Elf64_Phdr { 1044 Elf64_Word p_type; // Type of segment 1045 Elf64_Word p_flags; // Segment flags 1046 Elf64_Off p_offset; // File offset where segment is located, in bytes 1047 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 1048 Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific) 1049 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 1050 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 1051 Elf64_Xword p_align; // Segment alignment constraint 1052 }; 1053 1054 // Segment types. 1055 enum { 1056 PT_NULL = 0, // Unused segment. 1057 PT_LOAD = 1, // Loadable segment. 1058 PT_DYNAMIC = 2, // Dynamic linking information. 1059 PT_INTERP = 3, // Interpreter pathname. 1060 PT_NOTE = 4, // Auxiliary information. 1061 PT_SHLIB = 5, // Reserved. 1062 PT_PHDR = 6, // The program header table itself. 1063 PT_TLS = 7, // The thread-local storage template. 1064 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. 1065 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. 1066 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 1067 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type. 1068 1069 // x86-64 program header types. 1070 // These all contain stack unwind tables. 1071 PT_GNU_EH_FRAME = 0x6474e550, 1072 PT_SUNW_EH_FRAME = 0x6474e550, 1073 PT_SUNW_UNWIND = 0x6464e550, 1074 1075 PT_GNU_STACK = 0x6474e551, // Indicates stack executability. 1076 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation. 1077 1078 PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data. 1079 PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations. 1080 PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments. 1081 1082 // ARM program header types. 1083 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info 1084 // These all contain stack unwind tables. 1085 PT_ARM_EXIDX = 0x70000001, 1086 PT_ARM_UNWIND = 0x70000001, 1087 1088 // MIPS program header types. 1089 PT_MIPS_REGINFO = 0x70000000, // Register usage information. 1090 PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table. 1091 PT_MIPS_OPTIONS = 0x70000002, // Options segment. 1092 PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment. 1093 1094 // WebAssembly program header types. 1095 PT_WEBASSEMBLY_FUNCTIONS = PT_LOPROC + 0, // Function definitions. 1096 }; 1097 1098 // Segment flag bits. 1099 enum : unsigned { 1100 PF_X = 1, // Execute 1101 PF_W = 2, // Write 1102 PF_R = 4, // Read 1103 PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics. 1104 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. 1105 }; 1106 1107 // Dynamic table entry for ELF32. 1108 struct Elf32_Dyn { 1109 Elf32_Sword d_tag; // Type of dynamic table entry. 1110 union { 1111 Elf32_Word d_val; // Integer value of entry. 1112 Elf32_Addr d_ptr; // Pointer value of entry. 1113 } d_un; 1114 }; 1115 1116 // Dynamic table entry for ELF64. 1117 struct Elf64_Dyn { 1118 Elf64_Sxword d_tag; // Type of dynamic table entry. 1119 union { 1120 Elf64_Xword d_val; // Integer value of entry. 1121 Elf64_Addr d_ptr; // Pointer value of entry. 1122 } d_un; 1123 }; 1124 1125 // Dynamic table entry tags. 1126 enum { 1127 DT_NULL = 0, // Marks end of dynamic array. 1128 DT_NEEDED = 1, // String table offset of needed library. 1129 DT_PLTRELSZ = 2, // Size of relocation entries in PLT. 1130 DT_PLTGOT = 3, // Address associated with linkage table. 1131 DT_HASH = 4, // Address of symbolic hash table. 1132 DT_STRTAB = 5, // Address of dynamic string table. 1133 DT_SYMTAB = 6, // Address of dynamic symbol table. 1134 DT_RELA = 7, // Address of relocation table (Rela entries). 1135 DT_RELASZ = 8, // Size of Rela relocation table. 1136 DT_RELAENT = 9, // Size of a Rela relocation entry. 1137 DT_STRSZ = 10, // Total size of the string table. 1138 DT_SYMENT = 11, // Size of a symbol table entry. 1139 DT_INIT = 12, // Address of initialization function. 1140 DT_FINI = 13, // Address of termination function. 1141 DT_SONAME = 14, // String table offset of a shared objects name. 1142 DT_RPATH = 15, // String table offset of library search path. 1143 DT_SYMBOLIC = 16, // Changes symbol resolution algorithm. 1144 DT_REL = 17, // Address of relocation table (Rel entries). 1145 DT_RELSZ = 18, // Size of Rel relocation table. 1146 DT_RELENT = 19, // Size of a Rel relocation entry. 1147 DT_PLTREL = 20, // Type of relocation entry used for linking. 1148 DT_DEBUG = 21, // Reserved for debugger. 1149 DT_TEXTREL = 22, // Relocations exist for non-writable segments. 1150 DT_JMPREL = 23, // Address of relocations associated with PLT. 1151 DT_BIND_NOW = 24, // Process all relocations before execution. 1152 DT_INIT_ARRAY = 25, // Pointer to array of initialization functions. 1153 DT_FINI_ARRAY = 26, // Pointer to array of termination functions. 1154 DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY. 1155 DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY. 1156 DT_RUNPATH = 29, // String table offset of lib search path. 1157 DT_FLAGS = 30, // Flags. 1158 DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules 1159 // for the interpretation of the d_un union. 1160 1161 DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions. 1162 DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array. 1163 1164 DT_LOOS = 0x60000000, // Start of environment specific tags. 1165 DT_HIOS = 0x6FFFFFFF, // End of environment specific tags. 1166 DT_LOPROC = 0x70000000, // Start of processor specific tags. 1167 DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags. 1168 1169 DT_GNU_HASH = 0x6FFFFEF5, // Reference to the GNU hash table. 1170 DT_TLSDESC_PLT = 1171 0x6FFFFEF6, // Location of PLT entry for TLS descriptor resolver calls. 1172 DT_TLSDESC_GOT = 0x6FFFFEF7, // Location of GOT entry used by TLS descriptor 1173 // resolver PLT entry. 1174 DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count. 1175 DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count. 1176 1177 DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1. 1178 DT_VERSYM = 0x6FFFFFF0, // The address of .gnu.version section. 1179 DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table. 1180 DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF. 1181 DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table. 1182 DT_VERNEEDNUM = 0X6FFFFFFF, // The number of entries in DT_VERNEED. 1183 1184 // Hexagon specific dynamic table entries 1185 DT_HEXAGON_SYMSZ = 0x70000000, 1186 DT_HEXAGON_VER = 0x70000001, 1187 DT_HEXAGON_PLT = 0x70000002, 1188 1189 // Mips specific dynamic table entry tags. 1190 DT_MIPS_RLD_VERSION = 0x70000001, // 32 bit version number for runtime 1191 // linker interface. 1192 DT_MIPS_TIME_STAMP = 0x70000002, // Time stamp. 1193 DT_MIPS_ICHECKSUM = 0x70000003, // Checksum of external strings 1194 // and common sizes. 1195 DT_MIPS_IVERSION = 0x70000004, // Index of version string 1196 // in string table. 1197 DT_MIPS_FLAGS = 0x70000005, // 32 bits of flags. 1198 DT_MIPS_BASE_ADDRESS = 0x70000006, // Base address of the segment. 1199 DT_MIPS_MSYM = 0x70000007, // Address of .msym section. 1200 DT_MIPS_CONFLICT = 0x70000008, // Address of .conflict section. 1201 DT_MIPS_LIBLIST = 0x70000009, // Address of .liblist section. 1202 DT_MIPS_LOCAL_GOTNO = 0x7000000a, // Number of local global offset 1203 // table entries. 1204 DT_MIPS_CONFLICTNO = 0x7000000b, // Number of entries 1205 // in the .conflict section. 1206 DT_MIPS_LIBLISTNO = 0x70000010, // Number of entries 1207 // in the .liblist section. 1208 DT_MIPS_SYMTABNO = 0x70000011, // Number of entries 1209 // in the .dynsym section. 1210 DT_MIPS_UNREFEXTNO = 0x70000012, // Index of first external dynamic symbol 1211 // not referenced locally. 1212 DT_MIPS_GOTSYM = 0x70000013, // Index of first dynamic symbol 1213 // in global offset table. 1214 DT_MIPS_HIPAGENO = 0x70000014, // Number of page table entries 1215 // in global offset table. 1216 DT_MIPS_RLD_MAP = 0x70000016, // Address of run time loader map, 1217 // used for debugging. 1218 DT_MIPS_DELTA_CLASS = 0x70000017, // Delta C++ class definition. 1219 DT_MIPS_DELTA_CLASS_NO = 0x70000018, // Number of entries 1220 // in DT_MIPS_DELTA_CLASS. 1221 DT_MIPS_DELTA_INSTANCE = 0x70000019, // Delta C++ class instances. 1222 DT_MIPS_DELTA_INSTANCE_NO = 0x7000001A, // Number of entries 1223 // in DT_MIPS_DELTA_INSTANCE. 1224 DT_MIPS_DELTA_RELOC = 0x7000001B, // Delta relocations. 1225 DT_MIPS_DELTA_RELOC_NO = 0x7000001C, // Number of entries 1226 // in DT_MIPS_DELTA_RELOC. 1227 DT_MIPS_DELTA_SYM = 0x7000001D, // Delta symbols that Delta 1228 // relocations refer to. 1229 DT_MIPS_DELTA_SYM_NO = 0x7000001E, // Number of entries 1230 // in DT_MIPS_DELTA_SYM. 1231 DT_MIPS_DELTA_CLASSSYM = 0x70000020, // Delta symbols that hold 1232 // class declarations. 1233 DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021, // Number of entries 1234 // in DT_MIPS_DELTA_CLASSSYM. 1235 DT_MIPS_CXX_FLAGS = 0x70000022, // Flags indicating information 1236 // about C++ flavor. 1237 DT_MIPS_PIXIE_INIT = 0x70000023, // Pixie information. 1238 DT_MIPS_SYMBOL_LIB = 0x70000024, // Address of .MIPS.symlib 1239 DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025, // The GOT index of the first PTE 1240 // for a segment 1241 DT_MIPS_LOCAL_GOTIDX = 0x70000026, // The GOT index of the first PTE 1242 // for a local symbol 1243 DT_MIPS_HIDDEN_GOTIDX = 0x70000027, // The GOT index of the first PTE 1244 // for a hidden symbol 1245 DT_MIPS_PROTECTED_GOTIDX = 0x70000028, // The GOT index of the first PTE 1246 // for a protected symbol 1247 DT_MIPS_OPTIONS = 0x70000029, // Address of `.MIPS.options'. 1248 DT_MIPS_INTERFACE = 0x7000002A, // Address of `.interface'. 1249 DT_MIPS_DYNSTR_ALIGN = 0x7000002B, // Unknown. 1250 DT_MIPS_INTERFACE_SIZE = 0x7000002C, // Size of the .interface section. 1251 DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002D, // Size of rld_text_resolve 1252 // function stored in the GOT. 1253 DT_MIPS_PERF_SUFFIX = 0x7000002E, // Default suffix of DSO to be added 1254 // by rld on dlopen() calls. 1255 DT_MIPS_COMPACT_SIZE = 0x7000002F, // Size of compact relocation 1256 // section (O32). 1257 DT_MIPS_GP_VALUE = 0x70000030, // GP value for auxiliary GOTs. 1258 DT_MIPS_AUX_DYNAMIC = 0x70000031, // Address of auxiliary .dynamic. 1259 DT_MIPS_PLTGOT = 0x70000032, // Address of the base of the PLTGOT. 1260 DT_MIPS_RWPLT = 0x70000034, // Points to the base 1261 // of a writable PLT. 1262 DT_MIPS_RLD_MAP_REL = 0x70000035, // Relative offset of run time loader 1263 // map, used for debugging. 1264 1265 // Sun machine-independent extensions. 1266 DT_AUXILIARY = 0x7FFFFFFD, // Shared object to load before self 1267 DT_FILTER = 0x7FFFFFFF // Shared object to get values from 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 }; 1308 1309 // DT_MIPS_FLAGS values. 1310 enum { 1311 RHF_NONE = 0x00000000, // No flags. 1312 RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers. 1313 RHF_NOTPOT = 0x00000002, // Hash size is not a power of two. 1314 RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH. 1315 RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated. 1316 RHF_SGI_ONLY = 0x00000010, // SGI specific features. 1317 RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish 1318 // executing before any non-init 1319 // code in DSO is called. 1320 RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code. 1321 RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start 1322 // executing before any non-init 1323 // code in DSO is called. 1324 RHF_PIXIE = 0x00000100, // Generated by pixie. 1325 RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default. 1326 RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted 1327 RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted 1328 RHF_CORD = 0x00001000, // Generated by cord. 1329 RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved 1330 // undef symbols. 1331 RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order. 1332 }; 1333 1334 // ElfXX_VerDef structure version (GNU versioning) 1335 enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 }; 1336 1337 // VerDef Flags (ElfXX_VerDef::vd_flags) 1338 enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 }; 1339 1340 // Special constants for the version table. (SHT_GNU_versym/.gnu.version) 1341 enum { 1342 VER_NDX_LOCAL = 0, // Unversioned local symbol 1343 VER_NDX_GLOBAL = 1, // Unversioned global symbol 1344 VERSYM_VERSION = 0x7fff, // Version Index mask 1345 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) 1346 }; 1347 1348 // ElfXX_VerNeed structure version (GNU versioning) 1349 enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 }; 1350 1351 // SHT_NOTE section types 1352 enum { 1353 NT_FREEBSD_THRMISC = 7, 1354 NT_FREEBSD_PROCSTAT_PROC = 8, 1355 NT_FREEBSD_PROCSTAT_FILES = 9, 1356 NT_FREEBSD_PROCSTAT_VMMAP = 10, 1357 NT_FREEBSD_PROCSTAT_GROUPS = 11, 1358 NT_FREEBSD_PROCSTAT_UMASK = 12, 1359 NT_FREEBSD_PROCSTAT_RLIMIT = 13, 1360 NT_FREEBSD_PROCSTAT_OSREL = 14, 1361 NT_FREEBSD_PROCSTAT_PSSTRINGS = 15, 1362 NT_FREEBSD_PROCSTAT_AUXV = 16, 1363 }; 1364 1365 enum { 1366 NT_GNU_ABI_TAG = 1, 1367 NT_GNU_HWCAP = 2, 1368 NT_GNU_BUILD_ID = 3, 1369 NT_GNU_GOLD_VERSION = 4, 1370 }; 1371 1372 // AMDGPU specific notes. 1373 enum { 1374 // Note types with values between 0 and 9 (inclusive) are reserved. 1375 NT_AMD_AMDGPU_HSA_METADATA = 10, 1376 NT_AMD_AMDGPU_ISA = 11, 1377 NT_AMD_AMDGPU_PAL_METADATA = 12 1378 }; 1379 1380 enum { 1381 GNU_ABI_TAG_LINUX = 0, 1382 GNU_ABI_TAG_HURD = 1, 1383 GNU_ABI_TAG_SOLARIS = 2, 1384 GNU_ABI_TAG_FREEBSD = 3, 1385 GNU_ABI_TAG_NETBSD = 4, 1386 GNU_ABI_TAG_SYLLABLE = 5, 1387 GNU_ABI_TAG_NACL = 6, 1388 }; 1389 1390 // Compressed section header for ELF32. 1391 struct Elf32_Chdr { 1392 Elf32_Word ch_type; 1393 Elf32_Word ch_size; 1394 Elf32_Word ch_addralign; 1395 }; 1396 1397 // Compressed section header for ELF64. 1398 struct Elf64_Chdr { 1399 Elf64_Word ch_type; 1400 Elf64_Word ch_reserved; 1401 Elf64_Xword ch_size; 1402 Elf64_Xword ch_addralign; 1403 }; 1404 1405 // Legal values for ch_type field of compressed section header. 1406 enum { 1407 ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm. 1408 ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific. 1409 ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific. 1410 ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific. 1411 ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific. 1412 }; 1413 1414 } // end namespace ELF 1415 } // end namespace llvm 1416 1417 #endif // LLVM_BINARYFORMAT_ELF_H 1418
