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 "llvm/ADT/StringRef.h" 23 #include <cstdint> 24 #include <cstring> 25 #include <type_traits> 26 27 namespace llvm { 28 namespace ELF { 29 30 using Elf32_Addr = uint32_t; // Program address 31 using Elf32_Off = uint32_t; // File offset 32 using Elf32_Half = uint16_t; 33 using Elf32_Word = uint32_t; 34 using Elf32_Sword = int32_t; 35 36 using Elf64_Addr = uint64_t; 37 using Elf64_Off = uint64_t; 38 using Elf64_Half = uint16_t; 39 using Elf64_Word = uint32_t; 40 using Elf64_Sword = int32_t; 41 using Elf64_Xword = uint64_t; 42 using Elf64_Sxword = int64_t; 43 44 // Object file magic string. 45 static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'}; 46 47 // e_ident size and indices. 48 enum { 49 EI_MAG0 = 0, // File identification index. 50 EI_MAG1 = 1, // File identification index. 51 EI_MAG2 = 2, // File identification index. 52 EI_MAG3 = 3, // File identification index. 53 EI_CLASS = 4, // File class. 54 EI_DATA = 5, // Data encoding. 55 EI_VERSION = 6, // File version. 56 EI_OSABI = 7, // OS/ABI identification. 57 EI_ABIVERSION = 8, // ABI version. 58 EI_PAD = 9, // Start of padding bytes. 59 EI_NIDENT = 16 // Number of bytes in e_ident. 60 }; 61 62 struct Elf32_Ehdr { 63 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 64 Elf32_Half e_type; // Type of file (see ET_* below) 65 Elf32_Half e_machine; // Required architecture for this file (see EM_*) 66 Elf32_Word e_version; // Must be equal to 1 67 Elf32_Addr e_entry; // Address to jump to in order to start program 68 Elf32_Off e_phoff; // Program header table's file offset, in bytes 69 Elf32_Off e_shoff; // Section header table's file offset, in bytes 70 Elf32_Word e_flags; // Processor-specific flags 71 Elf32_Half e_ehsize; // Size of ELF header, in bytes 72 Elf32_Half e_phentsize; // Size of an entry in the program header table 73 Elf32_Half e_phnum; // Number of entries in the program header table 74 Elf32_Half e_shentsize; // Size of an entry in the section header table 75 Elf32_Half e_shnum; // Number of entries in the section header table 76 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 77 78 bool checkMagic() const { 79 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 80 } 81 82 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 83 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 84 }; 85 86 // 64-bit ELF header. Fields are the same as for ELF32, but with different 87 // types (see above). 88 struct Elf64_Ehdr { 89 unsigned char e_ident[EI_NIDENT]; 90 Elf64_Half e_type; 91 Elf64_Half e_machine; 92 Elf64_Word e_version; 93 Elf64_Addr e_entry; 94 Elf64_Off e_phoff; 95 Elf64_Off e_shoff; 96 Elf64_Word e_flags; 97 Elf64_Half e_ehsize; 98 Elf64_Half e_phentsize; 99 Elf64_Half e_phnum; 100 Elf64_Half e_shentsize; 101 Elf64_Half e_shnum; 102 Elf64_Half e_shstrndx; 103 104 bool checkMagic() const { 105 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 106 } 107 108 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 109 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 110 }; 111 112 // File types. 113 // See current registered ELF types at: 114 // http://www.sco.com/developers/gabi/latest/ch4.eheader.html 115 enum { 116 ET_NONE = 0, // No file type 117 ET_REL = 1, // Relocatable file 118 ET_EXEC = 2, // Executable file 119 ET_DYN = 3, // Shared object file 120 ET_CORE = 4, // Core file 121 ET_LOOS = 0xfe00, // Beginning of operating system-specific codes 122 ET_HIOS = 0xfeff, // Operating system-specific 123 ET_LOPROC = 0xff00, // Beginning of processor-specific codes 124 ET_HIPROC = 0xffff // Processor-specific 125 }; 126 127 // Versioning 128 enum { EV_NONE = 0, EV_CURRENT = 1 }; 129 130 // Machine architectures. 131 // At the time of writing, the list of registered machine architectures is 132 // at https://groups.google.com/g/generic-abi/c/0kORSDcyhTE/m/ZRf_PvcHAAAJ 133 // Please refer to https://groups.google.com/g/generic-abi for any further 134 // updates. 135 enum { 136 EM_NONE = 0, // No machine 137 EM_M32 = 1, // AT&T WE 32100 138 EM_SPARC = 2, // SPARC 139 EM_386 = 3, // Intel 386 140 EM_68K = 4, // Motorola 68000 141 EM_88K = 5, // Motorola 88000 142 EM_IAMCU = 6, // Intel MCU 143 EM_860 = 7, // Intel 80860 144 EM_MIPS = 8, // MIPS R3000 145 EM_S370 = 9, // IBM System/370 146 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian 147 EM_PARISC = 15, // Hewlett-Packard PA-RISC 148 EM_VPP500 = 17, // Fujitsu VPP500 149 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC 150 EM_960 = 19, // Intel 80960 151 EM_PPC = 20, // PowerPC 152 EM_PPC64 = 21, // PowerPC64 153 EM_S390 = 22, // IBM System/390 154 EM_SPU = 23, // IBM SPU/SPC 155 EM_V800 = 36, // NEC V800 156 EM_FR20 = 37, // Fujitsu FR20 157 EM_RH32 = 38, // TRW RH-32 158 EM_RCE = 39, // Motorola RCE 159 EM_ARM = 40, // ARM 160 EM_ALPHA = 41, // DEC Alpha 161 EM_SH = 42, // Hitachi SH 162 EM_SPARCV9 = 43, // SPARC V9 163 EM_TRICORE = 44, // Siemens TriCore 164 EM_ARC = 45, // Argonaut RISC Core 165 EM_H8_300 = 46, // Hitachi H8/300 166 EM_H8_300H = 47, // Hitachi H8/300H 167 EM_H8S = 48, // Hitachi H8S 168 EM_H8_500 = 49, // Hitachi H8/500 169 EM_IA_64 = 50, // Intel IA-64 processor architecture 170 EM_MIPS_X = 51, // Stanford MIPS-X 171 EM_COLDFIRE = 52, // Motorola ColdFire 172 EM_68HC12 = 53, // Motorola M68HC12 173 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator 174 EM_PCP = 55, // Siemens PCP 175 EM_NCPU = 56, // Sony nCPU embedded RISC processor 176 EM_NDR1 = 57, // Denso NDR1 microprocessor 177 EM_STARCORE = 58, // Motorola Star*Core processor 178 EM_ME16 = 59, // Toyota ME16 processor 179 EM_ST100 = 60, // STMicroelectronics ST100 processor 180 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family 181 EM_X86_64 = 62, // AMD x86-64 architecture 182 EM_PDSP = 63, // Sony DSP Processor 183 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 184 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 185 EM_FX66 = 66, // Siemens FX66 microcontroller 186 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller 187 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller 188 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller 189 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller 190 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller 191 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller 192 EM_SVX = 73, // Silicon Graphics SVx 193 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller 194 EM_VAX = 75, // Digital VAX 195 EM_CRIS = 76, // Axis Communications 32-bit embedded processor 196 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor 197 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor 198 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor 199 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor 200 EM_HUANY = 81, // Harvard University machine-independent object files 201 EM_PRISM = 82, // SiTera Prism 202 EM_AVR = 83, // Atmel AVR 8-bit microcontroller 203 EM_FR30 = 84, // Fujitsu FR30 204 EM_D10V = 85, // Mitsubishi D10V 205 EM_D30V = 86, // Mitsubishi D30V 206 EM_V850 = 87, // NEC v850 207 EM_M32R = 88, // Mitsubishi M32R 208 EM_MN10300 = 89, // Matsushita MN10300 209 EM_MN10200 = 90, // Matsushita MN10200 210 EM_PJ = 91, // picoJava 211 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor 212 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old 213 // spelling/synonym: EM_ARC_A5) 214 EM_XTENSA = 94, // Tensilica Xtensa Architecture 215 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor 216 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor 217 EM_NS32K = 97, // National Semiconductor 32000 series 218 EM_TPC = 98, // Tenor Network TPC processor 219 EM_SNP1K = 99, // Trebia SNP 1000 processor 220 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 221 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family 222 EM_MAX = 102, // MAX Processor 223 EM_CR = 103, // National Semiconductor CompactRISC microprocessor 224 EM_F2MC16 = 104, // Fujitsu F2MC16 225 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 226 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor 227 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors 228 EM_SEP = 108, // Sharp embedded microprocessor 229 EM_ARCA = 109, // Arca RISC Microprocessor 230 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC 231 // of Peking University 232 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU 233 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor 234 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor 235 EM_CRX = 114, // National Semiconductor CompactRISC CRX 236 EM_XGATE = 115, // Motorola XGATE embedded processor 237 EM_C166 = 116, // Infineon C16x/XC16x processor 238 EM_M16C = 117, // Renesas M16C series microprocessors 239 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal 240 // Controller 241 EM_CE = 119, // Freescale Communication Engine RISC core 242 EM_M32C = 120, // Renesas M32C series microprocessors 243 EM_TSK3000 = 131, // Altium TSK3000 core 244 EM_RS08 = 132, // Freescale RS08 embedded processor 245 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP 246 // processors 247 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor 248 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor 249 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor 250 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor 251 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture 252 EM_SE_C17 = 139, // Seiko Epson C17 family 253 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family 254 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family 255 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family 256 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor 257 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor 258 EM_R32C = 162, // Renesas R32C series microprocessors 259 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family 260 EM_HEXAGON = 164, // Qualcomm Hexagon processor 261 EM_8051 = 165, // Intel 8051 and variants 262 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable 263 // and extensible RISC processors 264 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC 265 // processor family 266 EM_ECOG1 = 168, // Cyan Technology eCOG1X family 267 EM_ECOG1X = 168, // Cyan Technology eCOG1X family 268 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers 269 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor 270 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor 271 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture 272 EM_RX = 173, // Renesas RX family 273 EM_METAG = 174, // Imagination Technologies META processor 274 // architecture 275 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture 276 EM_ECOG16 = 176, // Cyan Technology eCOG16 family 277 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit 278 // microprocessor 279 EM_ETPU = 178, // Freescale Extended Time Processing Unit 280 EM_SLE9X = 179, // Infineon Technologies SLE9X core 281 EM_L10M = 180, // Intel L10M 282 EM_K10M = 181, // Intel K10M 283 EM_AARCH64 = 183, // ARM AArch64 284 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family 285 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller 286 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family 287 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family 288 EM_MICROBLAZE = 189, // Xilinx MicroBlaze 32-bit RISC soft processor core 289 EM_CUDA = 190, // NVIDIA CUDA architecture 290 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family 291 EM_CLOUDSHIELD = 192, // CloudShield architecture family 292 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family 293 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family 294 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 295 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core 296 EM_RL78 = 197, // Renesas RL78 family 297 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor 298 EM_78KOR = 199, // Renesas 78KOR family 299 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) 300 EM_BA1 = 201, // Beyond BA1 CPU architecture 301 EM_BA2 = 202, // Beyond BA2 CPU architecture 302 EM_XCORE = 203, // XMOS xCORE processor family 303 EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family 304 EM_INTEL205 = 205, // Reserved by Intel 305 EM_INTEL206 = 206, // Reserved by Intel 306 EM_INTEL207 = 207, // Reserved by Intel 307 EM_INTEL208 = 208, // Reserved by Intel 308 EM_INTEL209 = 209, // Reserved by Intel 309 EM_KM32 = 210, // KM211 KM32 32-bit processor 310 EM_KMX32 = 211, // KM211 KMX32 32-bit processor 311 EM_KMX16 = 212, // KM211 KMX16 16-bit processor 312 EM_KMX8 = 213, // KM211 KMX8 8-bit processor 313 EM_KVARC = 214, // KM211 KVARC processor 314 EM_CDP = 215, // Paneve CDP architecture family 315 EM_COGE = 216, // Cognitive Smart Memory Processor 316 EM_COOL = 217, // iCelero CoolEngine 317 EM_NORC = 218, // Nanoradio Optimized RISC 318 EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family 319 EM_AMDGPU = 224, // AMD GPU architecture 320 EM_RISCV = 243, // RISC-V 321 EM_LANAI = 244, // Lanai 32-bit processor 322 EM_BPF = 247, // Linux kernel bpf virtual machine 323 EM_VE = 251, // NEC SX-Aurora VE 324 EM_CSKY = 252, // C-SKY 32-bit processor 325 EM_LOONGARCH = 258, // LoongArch 326 }; 327 328 // Object file classes. 329 enum { 330 ELFCLASSNONE = 0, 331 ELFCLASS32 = 1, // 32-bit object file 332 ELFCLASS64 = 2 // 64-bit object file 333 }; 334 335 // Object file byte orderings. 336 enum { 337 ELFDATANONE = 0, // Invalid data encoding. 338 ELFDATA2LSB = 1, // Little-endian object file 339 ELFDATA2MSB = 2 // Big-endian object file 340 }; 341 342 // OS ABI identification. 343 enum { 344 ELFOSABI_NONE = 0, // UNIX System V ABI 345 ELFOSABI_HPUX = 1, // HP-UX operating system 346 ELFOSABI_NETBSD = 2, // NetBSD 347 ELFOSABI_GNU = 3, // GNU/Linux 348 ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU. 349 ELFOSABI_HURD = 4, // GNU/Hurd 350 ELFOSABI_SOLARIS = 6, // Solaris 351 ELFOSABI_AIX = 7, // AIX 352 ELFOSABI_IRIX = 8, // IRIX 353 ELFOSABI_FREEBSD = 9, // FreeBSD 354 ELFOSABI_TRU64 = 10, // TRU64 UNIX 355 ELFOSABI_MODESTO = 11, // Novell Modesto 356 ELFOSABI_OPENBSD = 12, // OpenBSD 357 ELFOSABI_OPENVMS = 13, // OpenVMS 358 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 359 ELFOSABI_AROS = 15, // AROS 360 ELFOSABI_FENIXOS = 16, // FenixOS 361 ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI 362 ELFOSABI_CUDA = 51, // NVIDIA CUDA architecture. 363 ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI 364 ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime 365 ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime 366 ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime 367 ELFOSABI_ARM = 97, // ARM 368 ELFOSABI_ARM_FDPIC = 65, // ARM FDPIC 369 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 370 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 371 ELFOSABI_STANDALONE = 255, // Standalone (embedded) application 372 ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI 373 }; 374 375 // AMDGPU OS ABI Version identification. 376 enum { 377 // ELFABIVERSION_AMDGPU_HSA_V1 does not exist because OS ABI identification 378 // was never defined for V1. 379 ELFABIVERSION_AMDGPU_HSA_V2 = 0, 380 ELFABIVERSION_AMDGPU_HSA_V3 = 1, 381 ELFABIVERSION_AMDGPU_HSA_V4 = 2, 382 ELFABIVERSION_AMDGPU_HSA_V5 = 3, 383 ELFABIVERSION_AMDGPU_HSA_V6 = 4, 384 }; 385 386 #define ELF_RELOC(name, value) name = value, 387 388 // X86_64 relocations. 389 enum { 390 #include "ELFRelocs/x86_64.def" 391 }; 392 393 // i386 relocations. 394 enum { 395 #include "ELFRelocs/i386.def" 396 }; 397 398 // ELF Relocation types for PPC32 399 enum { 400 #include "ELFRelocs/PowerPC.def" 401 }; 402 403 // Specific e_flags for PPC64 404 enum { 405 // e_flags bits specifying ABI: 406 // 1 for original ABI using function descriptors, 407 // 2 for revised ABI without function descriptors, 408 // 0 for unspecified or not using any features affected by the differences. 409 EF_PPC64_ABI = 3 410 }; 411 412 // Special values for the st_other field in the symbol table entry for PPC64. 413 enum { 414 STO_PPC64_LOCAL_BIT = 5, 415 STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT) 416 }; 417 static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) { 418 unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT; 419 return ((1 << Val) >> 2) << 2; 420 } 421 422 // ELF Relocation types for PPC64 423 enum { 424 #include "ELFRelocs/PowerPC64.def" 425 }; 426 427 // ELF Relocation types for AArch64 428 enum { 429 #include "ELFRelocs/AArch64.def" 430 }; 431 432 // Special values for the st_other field in the symbol table entry for AArch64. 433 enum { 434 // Symbol may follow different calling convention than base PCS. 435 STO_AARCH64_VARIANT_PCS = 0x80 436 }; 437 438 // ARM Specific e_flags 439 enum : unsigned { 440 EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5 441 EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5 442 EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5 443 EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5 444 EF_ARM_BE8 = 0x00800000U, 445 EF_ARM_EABI_UNKNOWN = 0x00000000U, 446 EF_ARM_EABI_VER1 = 0x01000000U, 447 EF_ARM_EABI_VER2 = 0x02000000U, 448 EF_ARM_EABI_VER3 = 0x03000000U, 449 EF_ARM_EABI_VER4 = 0x04000000U, 450 EF_ARM_EABI_VER5 = 0x05000000U, 451 EF_ARM_EABIMASK = 0xFF000000U 452 }; 453 454 // ELF Relocation types for ARM 455 enum { 456 #include "ELFRelocs/ARM.def" 457 }; 458 459 // ARC Specific e_flags 460 enum : unsigned { 461 EF_ARC_MACH_MSK = 0x000000ff, 462 EF_ARC_OSABI_MSK = 0x00000f00, 463 E_ARC_MACH_ARC600 = 0x00000002, 464 E_ARC_MACH_ARC601 = 0x00000004, 465 E_ARC_MACH_ARC700 = 0x00000003, 466 EF_ARC_CPU_ARCV2EM = 0x00000005, 467 EF_ARC_CPU_ARCV2HS = 0x00000006, 468 E_ARC_OSABI_ORIG = 0x00000000, 469 E_ARC_OSABI_V2 = 0x00000200, 470 E_ARC_OSABI_V3 = 0x00000300, 471 E_ARC_OSABI_V4 = 0x00000400, 472 EF_ARC_PIC = 0x00000100 473 }; 474 475 // ELF Relocation types for ARC 476 enum { 477 #include "ELFRelocs/ARC.def" 478 }; 479 480 // AVR specific e_flags 481 enum : unsigned { 482 EF_AVR_ARCH_AVR1 = 1, 483 EF_AVR_ARCH_AVR2 = 2, 484 EF_AVR_ARCH_AVR25 = 25, 485 EF_AVR_ARCH_AVR3 = 3, 486 EF_AVR_ARCH_AVR31 = 31, 487 EF_AVR_ARCH_AVR35 = 35, 488 EF_AVR_ARCH_AVR4 = 4, 489 EF_AVR_ARCH_AVR5 = 5, 490 EF_AVR_ARCH_AVR51 = 51, 491 EF_AVR_ARCH_AVR6 = 6, 492 EF_AVR_ARCH_AVRTINY = 100, 493 EF_AVR_ARCH_XMEGA1 = 101, 494 EF_AVR_ARCH_XMEGA2 = 102, 495 EF_AVR_ARCH_XMEGA3 = 103, 496 EF_AVR_ARCH_XMEGA4 = 104, 497 EF_AVR_ARCH_XMEGA5 = 105, 498 EF_AVR_ARCH_XMEGA6 = 106, 499 EF_AVR_ARCH_XMEGA7 = 107, 500 501 EF_AVR_ARCH_MASK = 0x7f, // EF_AVR_ARCH_xxx selection mask 502 503 EF_AVR_LINKRELAX_PREPARED = 0x80, // The file is prepared for linker 504 // relaxation to be applied 505 }; 506 507 // ELF Relocation types for AVR 508 enum { 509 #include "ELFRelocs/AVR.def" 510 }; 511 512 // Mips Specific e_flags 513 enum : unsigned { 514 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions 515 EF_MIPS_PIC = 0x00000002, // Position independent code 516 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code 517 EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI 518 EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine 519 // in 32-bit mode 520 EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine 521 // but uses 64-bit FP registers 522 EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding 523 524 // ABI flags 525 EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI 526 EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture. 527 EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode. 528 EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode. 529 EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant. 530 531 // MIPS machine variant 532 EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation. 533 EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900 534 EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010 535 EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100 536 EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650 537 EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120 538 EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181 539 EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1 540 EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon 541 EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr 542 EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2 543 EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3 544 EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400 545 EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900 546 EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500 547 EF_MIPS_MACH_9000 = 0x00990000, // Unknown 548 EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E 549 EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F 550 EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A 551 EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask 552 553 // ARCH_ASE 554 EF_MIPS_MICROMIPS = 0x02000000, // microMIPS 555 EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions 556 EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions 557 EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags 558 559 // ARCH 560 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set 561 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set 562 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set 563 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set 564 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set 565 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h 566 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h 567 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5 568 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5 569 EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6 570 EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6 571 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant 572 }; 573 574 // MIPS-specific section indexes 575 enum { 576 SHN_MIPS_ACOMMON = 0xff00, // Common symbols which are defined and allocated 577 SHN_MIPS_TEXT = 0xff01, // Not ABI compliant 578 SHN_MIPS_DATA = 0xff02, // Not ABI compliant 579 SHN_MIPS_SCOMMON = 0xff03, // Common symbols for global data area 580 SHN_MIPS_SUNDEFINED = 0xff04 // Undefined symbols for global data area 581 }; 582 583 // ELF Relocation types for Mips 584 enum { 585 #include "ELFRelocs/Mips.def" 586 }; 587 588 // Special values for the st_other field in the symbol table entry for MIPS. 589 enum { 590 STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional 591 STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record 592 STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC 593 STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips 594 STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16 595 }; 596 597 // .MIPS.options section descriptor kinds 598 enum { 599 ODK_NULL = 0, // Undefined 600 ODK_REGINFO = 1, // Register usage information 601 ODK_EXCEPTIONS = 2, // Exception processing options 602 ODK_PAD = 3, // Section padding options 603 ODK_HWPATCH = 4, // Hardware patches applied 604 ODK_FILL = 5, // Linker fill value 605 ODK_TAGS = 6, // Space for tool identification 606 ODK_HWAND = 7, // Hardware AND patches applied 607 ODK_HWOR = 8, // Hardware OR patches applied 608 ODK_GP_GROUP = 9, // GP group to use for text/data sections 609 ODK_IDENT = 10, // ID information 610 ODK_PAGESIZE = 11 // Page size information 611 }; 612 613 // Hexagon-specific e_flags 614 enum { 615 // Object processor version flags, bits[11:0] 616 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2 617 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3 618 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4 619 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5 620 EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55 621 EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60 622 EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62 623 EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65 624 EF_HEXAGON_MACH_V66 = 0x00000066, // Hexagon V66 625 EF_HEXAGON_MACH_V67 = 0x00000067, // Hexagon V67 626 EF_HEXAGON_MACH_V67T = 0x00008067, // Hexagon V67T 627 EF_HEXAGON_MACH_V68 = 0x00000068, // Hexagon V68 628 EF_HEXAGON_MACH_V69 = 0x00000069, // Hexagon V69 629 EF_HEXAGON_MACH_V71 = 0x00000071, // Hexagon V71 630 EF_HEXAGON_MACH_V71T = 0x00008071, // Hexagon V71T 631 EF_HEXAGON_MACH_V73 = 0x00000073, // Hexagon V73 632 EF_HEXAGON_MACH_V75 = 0x00000075, // Hexagon V75 633 EF_HEXAGON_MACH_V79 = 0x00000079, // Hexagon V79 634 EF_HEXAGON_MACH = 0x000003ff, // Hexagon V.. 635 636 // Highest ISA version flags 637 EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0] 638 // of e_flags 639 EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA 640 EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA 641 EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA 642 EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA 643 EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA 644 EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA 645 EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA 646 EF_HEXAGON_ISA_V65 = 0x00000065, // Hexagon V65 ISA 647 EF_HEXAGON_ISA_V66 = 0x00000066, // Hexagon V66 ISA 648 EF_HEXAGON_ISA_V67 = 0x00000067, // Hexagon V67 ISA 649 EF_HEXAGON_ISA_V68 = 0x00000068, // Hexagon V68 ISA 650 EF_HEXAGON_ISA_V69 = 0x00000069, // Hexagon V69 ISA 651 EF_HEXAGON_ISA_V71 = 0x00000071, // Hexagon V71 ISA 652 EF_HEXAGON_ISA_V73 = 0x00000073, // Hexagon V73 ISA 653 EF_HEXAGON_ISA_V75 = 0x00000075, // Hexagon V75 ISA 654 EF_HEXAGON_ISA_V79 = 0x00000079, // Hexagon V79 ISA 655 EF_HEXAGON_ISA = 0x000003ff, // Hexagon V.. ISA 656 }; 657 658 // Hexagon-specific section indexes for common small data 659 enum { 660 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes 661 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access 662 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access 663 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access 664 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access 665 }; 666 667 // ELF Relocation types for Hexagon 668 enum { 669 #include "ELFRelocs/Hexagon.def" 670 }; 671 672 // ELF Relocation type for Lanai. 673 enum { 674 #include "ELFRelocs/Lanai.def" 675 }; 676 677 // RISCV Specific e_flags 678 enum : unsigned { 679 EF_RISCV_RVC = 0x0001, 680 EF_RISCV_FLOAT_ABI = 0x0006, 681 EF_RISCV_FLOAT_ABI_SOFT = 0x0000, 682 EF_RISCV_FLOAT_ABI_SINGLE = 0x0002, 683 EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004, 684 EF_RISCV_FLOAT_ABI_QUAD = 0x0006, 685 EF_RISCV_RVE = 0x0008, 686 EF_RISCV_TSO = 0x0010, 687 }; 688 689 // ELF Relocation types for RISC-V 690 enum { 691 #include "ELFRelocs/RISCV.def" 692 #define ELF_RISCV_NONSTANDARD_RELOC(_vendor, name, value) name = value, 693 #include "ELFRelocs/RISCV_nonstandard.def" 694 #undef ELF_RISCV_NONSTANDARD_RELOC 695 }; 696 697 enum { 698 // Symbol may follow different calling convention than the standard calling 699 // convention. 700 STO_RISCV_VARIANT_CC = 0x80 701 }; 702 703 // ELF Relocation types for S390/zSeries 704 enum { 705 #include "ELFRelocs/SystemZ.def" 706 }; 707 708 // SPARC Specific e_flags 709 enum : unsigned { 710 // ELF extension mask. 711 // All values are available for EM_SPARC32PLUS & EM_SPARCV9 objects, except 712 // EF_SPARC_32PLUS which is a EM_SPARC32PLUS-only flag. 713 // 714 // Note that those features are not mutually exclusive (one can set more than 715 // one flag in this group). 716 EF_SPARC_EXT_MASK = 0xffff00, 717 EF_SPARC_32PLUS = 0x000100, 718 EF_SPARC_SUN_US1 = 0x000200, 719 EF_SPARC_HAL_R1 = 0x000400, 720 EF_SPARC_SUN_US3 = 0x000800, 721 722 // Memory model selection mask for EM_SPARCV9 objects. 723 EF_SPARCV9_MM = 0x3, 724 EF_SPARCV9_TSO = 0x0, 725 EF_SPARCV9_PSO = 0x1, 726 EF_SPARCV9_RMO = 0x2, 727 }; 728 729 // ELF Relocation type for Sparc. 730 enum { 731 #include "ELFRelocs/Sparc.def" 732 }; 733 734 // AMDGPU specific e_flags. 735 enum : unsigned { 736 // Processor selection mask for EF_AMDGPU_MACH_* values. 737 EF_AMDGPU_MACH = 0x0ff, 738 739 // Not specified processor. 740 EF_AMDGPU_MACH_NONE = 0x000, 741 742 // R600-based processors. 743 744 // Radeon HD 2000/3000 Series (R600). 745 EF_AMDGPU_MACH_R600_R600 = 0x001, 746 EF_AMDGPU_MACH_R600_R630 = 0x002, 747 EF_AMDGPU_MACH_R600_RS880 = 0x003, 748 EF_AMDGPU_MACH_R600_RV670 = 0x004, 749 // Radeon HD 4000 Series (R700). 750 EF_AMDGPU_MACH_R600_RV710 = 0x005, 751 EF_AMDGPU_MACH_R600_RV730 = 0x006, 752 EF_AMDGPU_MACH_R600_RV770 = 0x007, 753 // Radeon HD 5000 Series (Evergreen). 754 EF_AMDGPU_MACH_R600_CEDAR = 0x008, 755 EF_AMDGPU_MACH_R600_CYPRESS = 0x009, 756 EF_AMDGPU_MACH_R600_JUNIPER = 0x00a, 757 EF_AMDGPU_MACH_R600_REDWOOD = 0x00b, 758 EF_AMDGPU_MACH_R600_SUMO = 0x00c, 759 // Radeon HD 6000 Series (Northern Islands). 760 EF_AMDGPU_MACH_R600_BARTS = 0x00d, 761 EF_AMDGPU_MACH_R600_CAICOS = 0x00e, 762 EF_AMDGPU_MACH_R600_CAYMAN = 0x00f, 763 EF_AMDGPU_MACH_R600_TURKS = 0x010, 764 765 // Reserved for R600-based processors. 766 EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011, 767 EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f, 768 769 // First/last R600-based processors. 770 EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600, 771 EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS, 772 773 // AMDGCN-based processors. 774 // clang-format off 775 EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020, 776 EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021, 777 EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022, 778 EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023, 779 EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024, 780 EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025, 781 EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026, 782 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X27 = 0x027, 783 EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028, 784 EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029, 785 EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a, 786 EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b, 787 EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c, 788 EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d, 789 EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e, 790 EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f, 791 EF_AMDGPU_MACH_AMDGCN_GFX908 = 0x030, 792 EF_AMDGPU_MACH_AMDGCN_GFX909 = 0x031, 793 EF_AMDGPU_MACH_AMDGCN_GFX90C = 0x032, 794 EF_AMDGPU_MACH_AMDGCN_GFX1010 = 0x033, 795 EF_AMDGPU_MACH_AMDGCN_GFX1011 = 0x034, 796 EF_AMDGPU_MACH_AMDGCN_GFX1012 = 0x035, 797 EF_AMDGPU_MACH_AMDGCN_GFX1030 = 0x036, 798 EF_AMDGPU_MACH_AMDGCN_GFX1031 = 0x037, 799 EF_AMDGPU_MACH_AMDGCN_GFX1032 = 0x038, 800 EF_AMDGPU_MACH_AMDGCN_GFX1033 = 0x039, 801 EF_AMDGPU_MACH_AMDGCN_GFX602 = 0x03a, 802 EF_AMDGPU_MACH_AMDGCN_GFX705 = 0x03b, 803 EF_AMDGPU_MACH_AMDGCN_GFX805 = 0x03c, 804 EF_AMDGPU_MACH_AMDGCN_GFX1035 = 0x03d, 805 EF_AMDGPU_MACH_AMDGCN_GFX1034 = 0x03e, 806 EF_AMDGPU_MACH_AMDGCN_GFX90A = 0x03f, 807 EF_AMDGPU_MACH_AMDGCN_GFX940 = 0x040, 808 EF_AMDGPU_MACH_AMDGCN_GFX1100 = 0x041, 809 EF_AMDGPU_MACH_AMDGCN_GFX1013 = 0x042, 810 EF_AMDGPU_MACH_AMDGCN_GFX1150 = 0x043, 811 EF_AMDGPU_MACH_AMDGCN_GFX1103 = 0x044, 812 EF_AMDGPU_MACH_AMDGCN_GFX1036 = 0x045, 813 EF_AMDGPU_MACH_AMDGCN_GFX1101 = 0x046, 814 EF_AMDGPU_MACH_AMDGCN_GFX1102 = 0x047, 815 EF_AMDGPU_MACH_AMDGCN_GFX1200 = 0x048, 816 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X49 = 0x049, 817 EF_AMDGPU_MACH_AMDGCN_GFX1151 = 0x04a, 818 EF_AMDGPU_MACH_AMDGCN_GFX941 = 0x04b, 819 EF_AMDGPU_MACH_AMDGCN_GFX942 = 0x04c, 820 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X4D = 0x04d, 821 EF_AMDGPU_MACH_AMDGCN_GFX1201 = 0x04e, 822 EF_AMDGPU_MACH_AMDGCN_GFX950 = 0x04f, 823 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X50 = 0x050, 824 EF_AMDGPU_MACH_AMDGCN_GFX9_GENERIC = 0x051, 825 EF_AMDGPU_MACH_AMDGCN_GFX10_1_GENERIC = 0x052, 826 EF_AMDGPU_MACH_AMDGCN_GFX10_3_GENERIC = 0x053, 827 EF_AMDGPU_MACH_AMDGCN_GFX11_GENERIC = 0x054, 828 EF_AMDGPU_MACH_AMDGCN_GFX1152 = 0x055, 829 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X56 = 0x056, 830 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X57 = 0x057, 831 EF_AMDGPU_MACH_AMDGCN_GFX1153 = 0x058, 832 EF_AMDGPU_MACH_AMDGCN_GFX12_GENERIC = 0x059, 833 EF_AMDGPU_MACH_AMDGCN_GFX9_4_GENERIC = 0x05f, 834 // clang-format on 835 836 // First/last AMDGCN-based processors. 837 EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600, 838 EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX9_4_GENERIC, 839 840 // Indicates if the "xnack" target feature is enabled for all code contained 841 // in the object. 842 // 843 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2. 844 EF_AMDGPU_FEATURE_XNACK_V2 = 0x01, 845 // Indicates if the trap handler is enabled for all code contained 846 // in the object. 847 // 848 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2. 849 EF_AMDGPU_FEATURE_TRAP_HANDLER_V2 = 0x02, 850 851 // Indicates if the "xnack" target feature is enabled for all code contained 852 // in the object. 853 // 854 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V3. 855 EF_AMDGPU_FEATURE_XNACK_V3 = 0x100, 856 // Indicates if the "sramecc" target feature is enabled for all code 857 // contained in the object. 858 // 859 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V3. 860 EF_AMDGPU_FEATURE_SRAMECC_V3 = 0x200, 861 862 // XNACK selection mask for EF_AMDGPU_FEATURE_XNACK_* values. 863 // 864 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V4. 865 EF_AMDGPU_FEATURE_XNACK_V4 = 0x300, 866 // XNACK is not supported. 867 EF_AMDGPU_FEATURE_XNACK_UNSUPPORTED_V4 = 0x000, 868 // XNACK is any/default/unspecified. 869 EF_AMDGPU_FEATURE_XNACK_ANY_V4 = 0x100, 870 // XNACK is off. 871 EF_AMDGPU_FEATURE_XNACK_OFF_V4 = 0x200, 872 // XNACK is on. 873 EF_AMDGPU_FEATURE_XNACK_ON_V4 = 0x300, 874 875 // SRAMECC selection mask for EF_AMDGPU_FEATURE_SRAMECC_* values. 876 // 877 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V4. 878 EF_AMDGPU_FEATURE_SRAMECC_V4 = 0xc00, 879 // SRAMECC is not supported. 880 EF_AMDGPU_FEATURE_SRAMECC_UNSUPPORTED_V4 = 0x000, 881 // SRAMECC is any/default/unspecified. 882 EF_AMDGPU_FEATURE_SRAMECC_ANY_V4 = 0x400, 883 // SRAMECC is off. 884 EF_AMDGPU_FEATURE_SRAMECC_OFF_V4 = 0x800, 885 // SRAMECC is on. 886 EF_AMDGPU_FEATURE_SRAMECC_ON_V4 = 0xc00, 887 888 // Generic target versioning. This is contained in the list byte of EFLAGS. 889 EF_AMDGPU_GENERIC_VERSION = 0xff000000, 890 EF_AMDGPU_GENERIC_VERSION_OFFSET = 24, 891 EF_AMDGPU_GENERIC_VERSION_MIN = 1, 892 EF_AMDGPU_GENERIC_VERSION_MAX = 0xff, 893 }; 894 895 // ELF Relocation types for AMDGPU 896 enum { 897 #include "ELFRelocs/AMDGPU.def" 898 }; 899 900 // NVPTX specific e_flags. 901 enum : unsigned { 902 // Processor selection mask for EF_CUDA_SM* values. 903 EF_CUDA_SM = 0xff, 904 905 // SM based processor values. 906 EF_CUDA_SM20 = 0x14, 907 EF_CUDA_SM21 = 0x15, 908 EF_CUDA_SM30 = 0x1e, 909 EF_CUDA_SM32 = 0x20, 910 EF_CUDA_SM35 = 0x23, 911 EF_CUDA_SM37 = 0x25, 912 EF_CUDA_SM50 = 0x32, 913 EF_CUDA_SM52 = 0x34, 914 EF_CUDA_SM53 = 0x35, 915 EF_CUDA_SM60 = 0x3c, 916 EF_CUDA_SM61 = 0x3d, 917 EF_CUDA_SM62 = 0x3e, 918 EF_CUDA_SM70 = 0x46, 919 EF_CUDA_SM72 = 0x48, 920 EF_CUDA_SM75 = 0x4b, 921 EF_CUDA_SM80 = 0x50, 922 EF_CUDA_SM86 = 0x56, 923 EF_CUDA_SM87 = 0x57, 924 EF_CUDA_SM89 = 0x59, 925 // The sm_90a variant uses the same machine flag. 926 EF_CUDA_SM90 = 0x5a, 927 928 // Unified texture binding is enabled. 929 EF_CUDA_TEXMODE_UNIFIED = 0x100, 930 // Independent texture binding is enabled. 931 EF_CUDA_TEXMODE_INDEPENDANT = 0x200, 932 // The target is using 64-bit addressing. 933 EF_CUDA_64BIT_ADDRESS = 0x400, 934 // Set when using the sm_90a processor. 935 EF_CUDA_ACCELERATORS = 0x800, 936 // Undocumented software feature. 937 EF_CUDA_SW_FLAG_V2 = 0x1000, 938 939 // Virtual processor selection mask for EF_CUDA_VIRTUAL_SM* values. 940 EF_CUDA_VIRTUAL_SM = 0xff0000, 941 }; 942 943 // ELF Relocation types for BPF 944 enum { 945 #include "ELFRelocs/BPF.def" 946 }; 947 948 // ELF Relocation types for M68k 949 enum { 950 #include "ELFRelocs/M68k.def" 951 }; 952 953 // MSP430 specific e_flags 954 enum : unsigned { 955 EF_MSP430_MACH_MSP430x11 = 11, 956 EF_MSP430_MACH_MSP430x11x1 = 110, 957 EF_MSP430_MACH_MSP430x12 = 12, 958 EF_MSP430_MACH_MSP430x13 = 13, 959 EF_MSP430_MACH_MSP430x14 = 14, 960 EF_MSP430_MACH_MSP430x15 = 15, 961 EF_MSP430_MACH_MSP430x16 = 16, 962 EF_MSP430_MACH_MSP430x20 = 20, 963 EF_MSP430_MACH_MSP430x22 = 22, 964 EF_MSP430_MACH_MSP430x23 = 23, 965 EF_MSP430_MACH_MSP430x24 = 24, 966 EF_MSP430_MACH_MSP430x26 = 26, 967 EF_MSP430_MACH_MSP430x31 = 31, 968 EF_MSP430_MACH_MSP430x32 = 32, 969 EF_MSP430_MACH_MSP430x33 = 33, 970 EF_MSP430_MACH_MSP430x41 = 41, 971 EF_MSP430_MACH_MSP430x42 = 42, 972 EF_MSP430_MACH_MSP430x43 = 43, 973 EF_MSP430_MACH_MSP430x44 = 44, 974 EF_MSP430_MACH_MSP430X = 45, 975 EF_MSP430_MACH_MSP430x46 = 46, 976 EF_MSP430_MACH_MSP430x47 = 47, 977 EF_MSP430_MACH_MSP430x54 = 54, 978 }; 979 980 // ELF Relocation types for MSP430 981 enum { 982 #include "ELFRelocs/MSP430.def" 983 }; 984 985 // ELF Relocation type for VE. 986 enum { 987 #include "ELFRelocs/VE.def" 988 }; 989 990 // CSKY Specific e_flags 991 enum : unsigned { 992 EF_CSKY_801 = 0xa, 993 EF_CSKY_802 = 0x10, 994 EF_CSKY_803 = 0x9, 995 EF_CSKY_805 = 0x11, 996 EF_CSKY_807 = 0x6, 997 EF_CSKY_810 = 0x8, 998 EF_CSKY_860 = 0xb, 999 EF_CSKY_800 = 0x1f, 1000 EF_CSKY_FLOAT = 0x2000, 1001 EF_CSKY_DSP = 0x4000, 1002 EF_CSKY_ABIV2 = 0x20000000, 1003 EF_CSKY_EFV1 = 0x1000000, 1004 EF_CSKY_EFV2 = 0x2000000, 1005 EF_CSKY_EFV3 = 0x3000000 1006 }; 1007 1008 // ELF Relocation types for CSKY 1009 enum { 1010 #include "ELFRelocs/CSKY.def" 1011 }; 1012 1013 // LoongArch Specific e_flags 1014 enum : unsigned { 1015 // Definitions from LoongArch ELF psABI v2.01. 1016 // Reference: https://github.com/loongson/LoongArch-Documentation 1017 // (commit hash 296de4def055c871809068e0816325a4ac04eb12) 1018 1019 // Base ABI Modifiers 1020 EF_LOONGARCH_ABI_SOFT_FLOAT = 0x1, 1021 EF_LOONGARCH_ABI_SINGLE_FLOAT = 0x2, 1022 EF_LOONGARCH_ABI_DOUBLE_FLOAT = 0x3, 1023 EF_LOONGARCH_ABI_MODIFIER_MASK = 0x7, 1024 1025 // Object file ABI versions 1026 EF_LOONGARCH_OBJABI_V0 = 0x0, 1027 EF_LOONGARCH_OBJABI_V1 = 0x40, 1028 EF_LOONGARCH_OBJABI_MASK = 0xC0, 1029 }; 1030 1031 // ELF Relocation types for LoongArch 1032 enum { 1033 #include "ELFRelocs/LoongArch.def" 1034 }; 1035 1036 // Xtensa specific e_flags 1037 enum : unsigned { 1038 // Four-bit Xtensa machine type mask. 1039 EF_XTENSA_MACH = 0x0000000f, 1040 // Various CPU types. 1041 EF_XTENSA_MACH_NONE = 0x00000000, // A base Xtensa implementation 1042 EF_XTENSA_XT_INSN = 0x00000100, 1043 EF_XTENSA_XT_LIT = 0x00000200, 1044 }; 1045 1046 // ELF Relocation types for Xtensa 1047 enum { 1048 #include "ELFRelocs/Xtensa.def" 1049 }; 1050 1051 #undef ELF_RELOC 1052 1053 // Section header. 1054 struct Elf32_Shdr { 1055 Elf32_Word sh_name; // Section name (index into string table) 1056 Elf32_Word sh_type; // Section type (SHT_*) 1057 Elf32_Word sh_flags; // Section flags (SHF_*) 1058 Elf32_Addr sh_addr; // Address where section is to be loaded 1059 Elf32_Off sh_offset; // File offset of section data, in bytes 1060 Elf32_Word sh_size; // Size of section, in bytes 1061 Elf32_Word sh_link; // Section type-specific header table index link 1062 Elf32_Word sh_info; // Section type-specific extra information 1063 Elf32_Word sh_addralign; // Section address alignment 1064 Elf32_Word sh_entsize; // Size of records contained within the section 1065 }; 1066 1067 // Section header for ELF64 - same fields as ELF32, different types. 1068 struct Elf64_Shdr { 1069 Elf64_Word sh_name; 1070 Elf64_Word sh_type; 1071 Elf64_Xword sh_flags; 1072 Elf64_Addr sh_addr; 1073 Elf64_Off sh_offset; 1074 Elf64_Xword sh_size; 1075 Elf64_Word sh_link; 1076 Elf64_Word sh_info; 1077 Elf64_Xword sh_addralign; 1078 Elf64_Xword sh_entsize; 1079 }; 1080 1081 // Special section indices. 1082 enum { 1083 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 1084 SHN_LORESERVE = 0xff00, // Lowest reserved index 1085 SHN_LOPROC = 0xff00, // Lowest processor-specific index 1086 SHN_HIPROC = 0xff1f, // Highest processor-specific index 1087 SHN_LOOS = 0xff20, // Lowest operating system-specific index 1088 SHN_HIOS = 0xff3f, // Highest operating system-specific index 1089 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 1090 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 1091 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 1092 SHN_HIRESERVE = 0xffff // Highest reserved index 1093 }; 1094 1095 // Section types. 1096 enum : unsigned { 1097 SHT_NULL = 0, // No associated section (inactive entry). 1098 SHT_PROGBITS = 1, // Program-defined contents. 1099 SHT_SYMTAB = 2, // Symbol table. 1100 SHT_STRTAB = 3, // String table. 1101 SHT_RELA = 4, // Relocation entries; explicit addends. 1102 SHT_HASH = 5, // Symbol hash table. 1103 SHT_DYNAMIC = 6, // Information for dynamic linking. 1104 SHT_NOTE = 7, // Information about the file. 1105 SHT_NOBITS = 8, // Data occupies no space in the file. 1106 SHT_REL = 9, // Relocation entries; no explicit addends. 1107 SHT_SHLIB = 10, // Reserved. 1108 SHT_DYNSYM = 11, // Symbol table. 1109 SHT_INIT_ARRAY = 14, // Pointers to initialization functions. 1110 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 1111 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 1112 SHT_GROUP = 17, // Section group. 1113 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. 1114 // Experimental support for SHT_RELR sections. For details, see proposal 1115 // at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg 1116 SHT_RELR = 19, // Relocation entries; only offsets. 1117 // TODO: Experimental CREL relocations. LLVM will change the value and 1118 // break compatibility in the future. 1119 SHT_CREL = 0x40000014, 1120 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 1121 // Android packed relocation section types. 1122 // https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37 1123 SHT_ANDROID_REL = 0x60000001, 1124 SHT_ANDROID_RELA = 0x60000002, 1125 SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table. 1126 SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options. 1127 SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols 1128 // for safe ICF. 1129 SHT_LLVM_DEPENDENT_LIBRARIES = 1130 0x6fff4c04, // LLVM Dependent Library Specifiers. 1131 SHT_LLVM_SYMPART = 0x6fff4c05, // Symbol partition specification. 1132 SHT_LLVM_PART_EHDR = 0x6fff4c06, // ELF header for loadable partition. 1133 SHT_LLVM_PART_PHDR = 0x6fff4c07, // Phdrs for loadable partition. 1134 SHT_LLVM_BB_ADDR_MAP_V0 = 1135 0x6fff4c08, // LLVM Basic Block Address Map (old version kept for 1136 // backward-compatibility). 1137 SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c09, // LLVM Call Graph Profile. 1138 SHT_LLVM_BB_ADDR_MAP = 0x6fff4c0a, // LLVM Basic Block Address Map. 1139 SHT_LLVM_OFFLOADING = 0x6fff4c0b, // LLVM device offloading data. 1140 SHT_LLVM_LTO = 0x6fff4c0c, // .llvm.lto for fat LTO. 1141 SHT_LLVM_JT_SIZES = 0x6fff4c0d, // LLVM jump tables sizes. 1142 // Android's experimental support for SHT_RELR sections. 1143 // https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512 1144 SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets. 1145 SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes. 1146 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table. 1147 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. 1148 SHT_GNU_verneed = 0x6ffffffe, // GNU version references. 1149 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. 1150 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 1151 SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type. 1152 // Fixme: All this is duplicated in MCSectionELF. Why?? 1153 // Exception Index table 1154 SHT_ARM_EXIDX = 0x70000001U, 1155 // BPABI DLL dynamic linking pre-emption map 1156 SHT_ARM_PREEMPTMAP = 0x70000002U, 1157 // Object file compatibility attributes 1158 SHT_ARM_ATTRIBUTES = 0x70000003U, 1159 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 1160 SHT_ARM_OVERLAYSECTION = 0x70000005U, 1161 // Support for AArch64 build attributes 1162 SHT_AARCH64_ATTRIBUTES = 0x70000003U, 1163 // Special aarch64-specific section for MTE support, as described in: 1164 // https://github.com/ARM-software/abi-aa/blob/main/pauthabielf64/pauthabielf64.rst#section-types 1165 SHT_AARCH64_AUTH_RELR = 0x70000004U, 1166 // Special aarch64-specific sections for MTE support, as described in: 1167 // https://github.com/ARM-software/abi-aa/blob/main/memtagabielf64/memtagabielf64.rst#7section-types 1168 SHT_AARCH64_MEMTAG_GLOBALS_STATIC = 0x70000007U, 1169 SHT_AARCH64_MEMTAG_GLOBALS_DYNAMIC = 0x70000008U, 1170 SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in 1171 // this section based on their sizes 1172 SHT_X86_64_UNWIND = 0x70000001, // Unwind information 1173 1174 SHT_MIPS_REGINFO = 0x70000006, // Register usage information 1175 SHT_MIPS_OPTIONS = 0x7000000d, // General options 1176 SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section. 1177 SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information. 1178 1179 SHT_MSP430_ATTRIBUTES = 0x70000003U, 1180 1181 SHT_RISCV_ATTRIBUTES = 0x70000003U, 1182 1183 SHT_CSKY_ATTRIBUTES = 0x70000001U, 1184 1185 SHT_HEXAGON_ATTRIBUTES = 0x70000003U, 1186 1187 SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type. 1188 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 1189 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 1190 }; 1191 1192 // Section flags. 1193 enum : unsigned { 1194 // Section data should be writable during execution. 1195 SHF_WRITE = 0x1, 1196 1197 // Section occupies memory during program execution. 1198 SHF_ALLOC = 0x2, 1199 1200 // Section contains executable machine instructions. 1201 SHF_EXECINSTR = 0x4, 1202 1203 // The data in this section may be merged. 1204 SHF_MERGE = 0x10, 1205 1206 // The data in this section is null-terminated strings. 1207 SHF_STRINGS = 0x20, 1208 1209 // A field in this section holds a section header table index. 1210 SHF_INFO_LINK = 0x40U, 1211 1212 // Adds special ordering requirements for link editors. 1213 SHF_LINK_ORDER = 0x80U, 1214 1215 // This section requires special OS-specific processing to avoid incorrect 1216 // behavior. 1217 SHF_OS_NONCONFORMING = 0x100U, 1218 1219 // This section is a member of a section group. 1220 SHF_GROUP = 0x200U, 1221 1222 // This section holds Thread-Local Storage. 1223 SHF_TLS = 0x400U, 1224 1225 // Identifies a section containing compressed data. 1226 SHF_COMPRESSED = 0x800U, 1227 1228 // This section should not be garbage collected by the linker. 1229 SHF_GNU_RETAIN = 0x200000, 1230 1231 // This section is excluded from the final executable or shared library. 1232 SHF_EXCLUDE = 0x80000000U, 1233 1234 // Start of target-specific flags. 1235 1236 SHF_MASKOS = 0x0ff00000, 1237 1238 // Solaris equivalent of SHF_GNU_RETAIN. 1239 SHF_SUNW_NODISCARD = 0x00100000, 1240 1241 // Bits indicating processor-specific flags. 1242 SHF_MASKPROC = 0xf0000000, 1243 1244 /// All sections with the "d" flag are grouped together by the linker to form 1245 /// the data section and the dp register is set to the start of the section by 1246 /// the boot code. 1247 XCORE_SHF_DP_SECTION = 0x10000000, 1248 1249 /// All sections with the "c" flag are grouped together by the linker to form 1250 /// the constant pool and the cp register is set to the start of the constant 1251 /// pool by the boot code. 1252 XCORE_SHF_CP_SECTION = 0x20000000, 1253 1254 // If an object file section does not have this flag set, then it may not hold 1255 // more than 2GB and can be freely referred to in objects using smaller code 1256 // models. Otherwise, only objects using larger code models can refer to them. 1257 // For example, a medium code model object can refer to data in a section that 1258 // sets this flag besides being able to refer to data in a section that does 1259 // not set it; likewise, a small code model object can refer only to code in a 1260 // section that does not set this flag. 1261 SHF_X86_64_LARGE = 0x10000000, 1262 1263 // All sections with the GPREL flag are grouped into a global data area 1264 // for faster accesses 1265 SHF_HEX_GPREL = 0x10000000, 1266 1267 // Section contains text/data which may be replicated in other sections. 1268 // Linker must retain only one copy. 1269 SHF_MIPS_NODUPES = 0x01000000, 1270 1271 // Linker must generate implicit hidden weak names. 1272 SHF_MIPS_NAMES = 0x02000000, 1273 1274 // Section data local to process. 1275 SHF_MIPS_LOCAL = 0x04000000, 1276 1277 // Do not strip this section. 1278 SHF_MIPS_NOSTRIP = 0x08000000, 1279 1280 // Section must be part of global data area. 1281 SHF_MIPS_GPREL = 0x10000000, 1282 1283 // This section should be merged. 1284 SHF_MIPS_MERGE = 0x20000000, 1285 1286 // Address size to be inferred from section entry size. 1287 SHF_MIPS_ADDR = 0x40000000, 1288 1289 // Section data is string data by default. 1290 SHF_MIPS_STRING = 0x80000000, 1291 1292 // Make code section unreadable when in execute-only mode 1293 SHF_ARM_PURECODE = 0x20000000 1294 }; 1295 1296 // Section Group Flags 1297 enum : unsigned { 1298 GRP_COMDAT = 0x1, 1299 GRP_MASKOS = 0x0ff00000, 1300 GRP_MASKPROC = 0xf0000000 1301 }; 1302 1303 // Symbol table entries for ELF32. 1304 struct Elf32_Sym { 1305 Elf32_Word st_name; // Symbol name (index into string table) 1306 Elf32_Addr st_value; // Value or address associated with the symbol 1307 Elf32_Word st_size; // Size of the symbol 1308 unsigned char st_info; // Symbol's type and binding attributes 1309 unsigned char st_other; // Must be zero; reserved 1310 Elf32_Half st_shndx; // Which section (header table index) it's defined in 1311 1312 // These accessors and mutators correspond to the ELF32_ST_BIND, 1313 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 1314 unsigned char getBinding() const { return st_info >> 4; } 1315 unsigned char getType() const { return st_info & 0x0f; } 1316 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1317 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1318 void setBindingAndType(unsigned char b, unsigned char t) { 1319 st_info = (b << 4) + (t & 0x0f); 1320 } 1321 }; 1322 1323 // Symbol table entries for ELF64. 1324 struct Elf64_Sym { 1325 Elf64_Word st_name; // Symbol name (index into string table) 1326 unsigned char st_info; // Symbol's type and binding attributes 1327 unsigned char st_other; // Must be zero; reserved 1328 Elf64_Half st_shndx; // Which section (header tbl index) it's defined in 1329 Elf64_Addr st_value; // Value or address associated with the symbol 1330 Elf64_Xword st_size; // Size of the symbol 1331 1332 // These accessors and mutators are identical to those defined for ELF32 1333 // symbol table entries. 1334 unsigned char getBinding() const { return st_info >> 4; } 1335 unsigned char getType() const { return st_info & 0x0f; } 1336 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1337 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1338 void setBindingAndType(unsigned char b, unsigned char t) { 1339 st_info = (b << 4) + (t & 0x0f); 1340 } 1341 }; 1342 1343 // The size (in bytes) of symbol table entries. 1344 enum { 1345 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 1346 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 1347 }; 1348 1349 // Symbol bindings. 1350 enum { 1351 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 1352 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 1353 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 1354 STB_GNU_UNIQUE = 10, 1355 STB_LOOS = 10, // Lowest operating system-specific binding type 1356 STB_HIOS = 12, // Highest operating system-specific binding type 1357 STB_LOPROC = 13, // Lowest processor-specific binding type 1358 STB_HIPROC = 15 // Highest processor-specific binding type 1359 }; 1360 1361 // Symbol types. 1362 enum { 1363 STT_NOTYPE = 0, // Symbol's type is not specified 1364 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 1365 STT_FUNC = 2, // Symbol is executable code (function, etc.) 1366 STT_SECTION = 3, // Symbol refers to a section 1367 STT_FILE = 4, // Local, absolute symbol that refers to a file 1368 STT_COMMON = 5, // An uninitialized common block 1369 STT_TLS = 6, // Thread local data object 1370 STT_GNU_IFUNC = 10, // GNU indirect function 1371 STT_LOOS = 10, // Lowest operating system-specific symbol type 1372 STT_HIOS = 12, // Highest operating system-specific symbol type 1373 STT_LOPROC = 13, // Lowest processor-specific symbol type 1374 STT_HIPROC = 15, // Highest processor-specific symbol type 1375 1376 // AMDGPU symbol types 1377 STT_AMDGPU_HSA_KERNEL = 10 1378 }; 1379 1380 enum { 1381 STV_DEFAULT = 0, // Visibility is specified by binding type 1382 STV_INTERNAL = 1, // Defined by processor supplements 1383 STV_HIDDEN = 2, // Not visible to other components 1384 STV_PROTECTED = 3 // Visible in other components but not preemptable 1385 }; 1386 1387 // Symbol number. 1388 enum { STN_UNDEF = 0 }; 1389 1390 // Special relocation symbols used in the MIPS64 ELF relocation entries 1391 enum { 1392 RSS_UNDEF = 0, // None 1393 RSS_GP = 1, // Value of gp 1394 RSS_GP0 = 2, // Value of gp used to create object being relocated 1395 RSS_LOC = 3 // Address of location being relocated 1396 }; 1397 1398 // Relocation entry, without explicit addend. 1399 struct Elf32_Rel { 1400 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1401 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1402 1403 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1404 // and ELF32_R_INFO macros defined in the ELF specification: 1405 Elf32_Word getSymbol() const { return (r_info >> 8); } 1406 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 1407 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1408 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1409 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1410 r_info = (s << 8) + t; 1411 } 1412 }; 1413 1414 // Relocation entry with explicit addend. 1415 struct Elf32_Rela { 1416 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1417 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1418 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 1419 1420 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1421 // and ELF32_R_INFO macros defined in the ELF specification: 1422 Elf32_Word getSymbol() const { return (r_info >> 8); } 1423 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 1424 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1425 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1426 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1427 r_info = (s << 8) + t; 1428 } 1429 }; 1430 1431 // Relocation entry without explicit addend or info (relative relocations only). 1432 typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations 1433 1434 // Relocation entry, without explicit addend. 1435 struct Elf64_Rel { 1436 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1437 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1438 1439 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1440 // and ELF64_R_INFO macros defined in the ELF specification: 1441 Elf64_Word getSymbol() const { return (r_info >> 32); } 1442 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1443 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1444 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1445 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1446 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1447 } 1448 }; 1449 1450 // Relocation entry with explicit addend. 1451 struct Elf64_Rela { 1452 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1453 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1454 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 1455 1456 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1457 // and ELF64_R_INFO macros defined in the ELF specification: 1458 Elf64_Word getSymbol() const { return (r_info >> 32); } 1459 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1460 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1461 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1462 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1463 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1464 } 1465 }; 1466 1467 // In-memory representation of CREL. The serialized representation uses LEB128. 1468 template <bool Is64> struct Elf_Crel { 1469 std::conditional_t<Is64, uint64_t, uint32_t> r_offset; 1470 uint32_t r_symidx; 1471 uint32_t r_type; 1472 std::conditional_t<Is64, int64_t, int32_t> r_addend; 1473 }; 1474 1475 // Relocation entry without explicit addend or info (relative relocations only). 1476 typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations 1477 1478 // Program header for ELF32. 1479 struct Elf32_Phdr { 1480 Elf32_Word p_type; // Type of segment 1481 Elf32_Off p_offset; // File offset where segment is located, in bytes 1482 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 1483 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 1484 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 1485 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 1486 Elf32_Word p_flags; // Segment flags 1487 Elf32_Word p_align; // Segment alignment constraint 1488 }; 1489 1490 // Program header for ELF64. 1491 struct Elf64_Phdr { 1492 Elf64_Word p_type; // Type of segment 1493 Elf64_Word p_flags; // Segment flags 1494 Elf64_Off p_offset; // File offset where segment is located, in bytes 1495 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 1496 Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific) 1497 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 1498 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 1499 Elf64_Xword p_align; // Segment alignment constraint 1500 }; 1501 1502 // Segment types. 1503 enum { 1504 PT_NULL = 0, // Unused segment. 1505 PT_LOAD = 1, // Loadable segment. 1506 PT_DYNAMIC = 2, // Dynamic linking information. 1507 PT_INTERP = 3, // Interpreter pathname. 1508 PT_NOTE = 4, // Auxiliary information. 1509 PT_SHLIB = 5, // Reserved. 1510 PT_PHDR = 6, // The program header table itself. 1511 PT_TLS = 7, // The thread-local storage template. 1512 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. 1513 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. 1514 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 1515 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type. 1516 1517 // x86-64 program header types. 1518 // These all contain stack unwind tables. 1519 PT_GNU_EH_FRAME = 0x6474e550, 1520 PT_SUNW_EH_FRAME = 0x6474e550, 1521 PT_SUNW_UNWIND = 0x6464e550, 1522 1523 PT_GNU_STACK = 0x6474e551, // Indicates stack executability. 1524 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation. 1525 PT_GNU_PROPERTY = 0x6474e553, // .note.gnu.property notes sections. 1526 1527 PT_OPENBSD_MUTABLE = 0x65a3dbe5, // Like bss, but not immutable. 1528 PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data. 1529 PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations. 1530 PT_OPENBSD_NOBTCFI = 0x65a3dbe8, // Do not enforce branch target CFI. 1531 PT_OPENBSD_SYSCALLS = 0x65a3dbe9, // System call sites. 1532 PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments. 1533 1534 // ARM program header types. 1535 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info 1536 // These all contain stack unwind tables. 1537 PT_ARM_EXIDX = 0x70000001, 1538 PT_ARM_UNWIND = 0x70000001, 1539 // MTE memory tag segment type 1540 PT_AARCH64_MEMTAG_MTE = 0x70000002, 1541 1542 // MIPS program header types. 1543 PT_MIPS_REGINFO = 0x70000000, // Register usage information. 1544 PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table. 1545 PT_MIPS_OPTIONS = 0x70000002, // Options segment. 1546 PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment. 1547 1548 // RISCV program header types. 1549 PT_RISCV_ATTRIBUTES = 0x70000003, 1550 }; 1551 1552 // Segment flag bits. 1553 enum : unsigned { 1554 PF_X = 1, // Execute 1555 PF_W = 2, // Write 1556 PF_R = 4, // Read 1557 PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics. 1558 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. 1559 }; 1560 1561 // Dynamic table entry for ELF32. 1562 struct Elf32_Dyn { 1563 Elf32_Sword d_tag; // Type of dynamic table entry. 1564 union { 1565 Elf32_Word d_val; // Integer value of entry. 1566 Elf32_Addr d_ptr; // Pointer value of entry. 1567 } d_un; 1568 }; 1569 1570 // Dynamic table entry for ELF64. 1571 struct Elf64_Dyn { 1572 Elf64_Sxword d_tag; // Type of dynamic table entry. 1573 union { 1574 Elf64_Xword d_val; // Integer value of entry. 1575 Elf64_Addr d_ptr; // Pointer value of entry. 1576 } d_un; 1577 }; 1578 1579 // Dynamic table entry tags. 1580 enum { 1581 #define DYNAMIC_TAG(name, value) DT_##name = value, 1582 #include "DynamicTags.def" 1583 #undef DYNAMIC_TAG 1584 }; 1585 1586 // DT_FLAGS values. 1587 enum { 1588 DF_ORIGIN = 0x01, // The object may reference $ORIGIN. 1589 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe. 1590 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment. 1591 DF_BIND_NOW = 0x08, // Process all relocations on load. 1592 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. 1593 }; 1594 1595 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry. 1596 enum { 1597 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object. 1598 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object. 1599 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object. 1600 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object. 1601 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime. 1602 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object. 1603 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object. 1604 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled. 1605 DF_1_DIRECT = 0x00000100, // Direct binding enabled. 1606 DF_1_TRANS = 0x00000200, 1607 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose. 1608 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path. 1609 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed. 1610 DF_1_CONFALT = 0x00002000, // Configuration alternative created. 1611 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search. 1612 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time. 1613 DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time. 1614 DF_1_NODIRECT = 0x00020000, // Object has no-direct binding. 1615 DF_1_IGNMULDEF = 0x00040000, 1616 DF_1_NOKSYMS = 0x00080000, 1617 DF_1_NOHDR = 0x00100000, 1618 DF_1_EDITED = 0x00200000, // Object is modified after built. 1619 DF_1_NORELOC = 0x00400000, 1620 DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers. 1621 DF_1_GLOBAUDIT = 0x01000000, // Global auditing required. 1622 DF_1_SINGLETON = 0x02000000, // Singleton symbols are used. 1623 DF_1_PIE = 0x08000000, // Object is a position-independent executable. 1624 }; 1625 1626 // DT_MIPS_FLAGS values. 1627 enum { 1628 RHF_NONE = 0x00000000, // No flags. 1629 RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers. 1630 RHF_NOTPOT = 0x00000002, // Hash size is not a power of two. 1631 RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH. 1632 RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated. 1633 RHF_SGI_ONLY = 0x00000010, // SGI specific features. 1634 RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish 1635 // executing before any non-init 1636 // code in DSO is called. 1637 RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code. 1638 RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start 1639 // executing before any non-init 1640 // code in DSO is called. 1641 RHF_PIXIE = 0x00000100, // Generated by pixie. 1642 RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default. 1643 RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted 1644 RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted 1645 RHF_CORD = 0x00001000, // Generated by cord. 1646 RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved 1647 // undef symbols. 1648 RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order. 1649 }; 1650 1651 // ElfXX_VerDef structure version (GNU versioning) 1652 enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 }; 1653 1654 // VerDef Flags (ElfXX_VerDef::vd_flags) 1655 enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 }; 1656 1657 // Special constants for the version table. (SHT_GNU_versym/.gnu.version) 1658 enum { 1659 VER_NDX_LOCAL = 0, // Unversioned local symbol 1660 VER_NDX_GLOBAL = 1, // Unversioned global symbol 1661 VERSYM_VERSION = 0x7fff, // Version Index mask 1662 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) 1663 }; 1664 1665 // ElfXX_VerNeed structure version (GNU versioning) 1666 enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 }; 1667 1668 // SHT_NOTE section types. 1669 1670 // Generic note types. 1671 enum : unsigned { 1672 NT_VERSION = 1, 1673 NT_ARCH = 2, 1674 NT_GNU_BUILD_ATTRIBUTE_OPEN = 0x100, 1675 NT_GNU_BUILD_ATTRIBUTE_FUNC = 0x101, 1676 }; 1677 1678 // Core note types. 1679 enum : unsigned { 1680 NT_PRSTATUS = 1, 1681 NT_FPREGSET = 2, 1682 NT_PRPSINFO = 3, 1683 NT_TASKSTRUCT = 4, 1684 NT_AUXV = 6, 1685 NT_PSTATUS = 10, 1686 NT_FPREGS = 12, 1687 NT_PSINFO = 13, 1688 NT_LWPSTATUS = 16, 1689 NT_LWPSINFO = 17, 1690 NT_WIN32PSTATUS = 18, 1691 1692 NT_PPC_VMX = 0x100, 1693 NT_PPC_VSX = 0x102, 1694 NT_PPC_TAR = 0x103, 1695 NT_PPC_PPR = 0x104, 1696 NT_PPC_DSCR = 0x105, 1697 NT_PPC_EBB = 0x106, 1698 NT_PPC_PMU = 0x107, 1699 NT_PPC_TM_CGPR = 0x108, 1700 NT_PPC_TM_CFPR = 0x109, 1701 NT_PPC_TM_CVMX = 0x10a, 1702 NT_PPC_TM_CVSX = 0x10b, 1703 NT_PPC_TM_SPR = 0x10c, 1704 NT_PPC_TM_CTAR = 0x10d, 1705 NT_PPC_TM_CPPR = 0x10e, 1706 NT_PPC_TM_CDSCR = 0x10f, 1707 1708 NT_386_TLS = 0x200, 1709 NT_386_IOPERM = 0x201, 1710 NT_X86_XSTATE = 0x202, 1711 1712 NT_S390_HIGH_GPRS = 0x300, 1713 NT_S390_TIMER = 0x301, 1714 NT_S390_TODCMP = 0x302, 1715 NT_S390_TODPREG = 0x303, 1716 NT_S390_CTRS = 0x304, 1717 NT_S390_PREFIX = 0x305, 1718 NT_S390_LAST_BREAK = 0x306, 1719 NT_S390_SYSTEM_CALL = 0x307, 1720 NT_S390_TDB = 0x308, 1721 NT_S390_VXRS_LOW = 0x309, 1722 NT_S390_VXRS_HIGH = 0x30a, 1723 NT_S390_GS_CB = 0x30b, 1724 NT_S390_GS_BC = 0x30c, 1725 1726 NT_ARM_VFP = 0x400, 1727 NT_ARM_TLS = 0x401, 1728 NT_ARM_HW_BREAK = 0x402, 1729 NT_ARM_HW_WATCH = 0x403, 1730 NT_ARM_SVE = 0x405, 1731 NT_ARM_PAC_MASK = 0x406, 1732 NT_ARM_TAGGED_ADDR_CTRL = 0x409, 1733 NT_ARM_SSVE = 0x40b, 1734 NT_ARM_ZA = 0x40c, 1735 NT_ARM_ZT = 0x40d, 1736 NT_ARM_FPMR = 0x40e, 1737 NT_ARM_GCS = 0x410, 1738 1739 NT_FILE = 0x46494c45, 1740 NT_PRXFPREG = 0x46e62b7f, 1741 NT_SIGINFO = 0x53494749, 1742 }; 1743 1744 // LLVM-specific notes. 1745 enum { 1746 NT_LLVM_HWASAN_GLOBALS = 3, 1747 }; 1748 1749 // GNU note types. 1750 enum { 1751 NT_GNU_ABI_TAG = 1, 1752 NT_GNU_HWCAP = 2, 1753 NT_GNU_BUILD_ID = 3, 1754 NT_GNU_GOLD_VERSION = 4, 1755 NT_GNU_PROPERTY_TYPE_0 = 5, 1756 FDO_PACKAGING_METADATA = 0xcafe1a7e, 1757 }; 1758 1759 // Android note types. 1760 enum { 1761 NT_ANDROID_TYPE_IDENT = 1, 1762 NT_ANDROID_TYPE_KUSER = 3, 1763 NT_ANDROID_TYPE_MEMTAG = 4, 1764 }; 1765 1766 // Memory tagging values used in NT_ANDROID_TYPE_MEMTAG notes. 1767 enum { 1768 // Enumeration to determine the tagging mode. In Android-land, 'SYNC' means 1769 // running all threads in MTE Synchronous mode, and 'ASYNC' means to use the 1770 // kernels auto-upgrade feature to allow for either MTE Asynchronous, 1771 // Asymmetric, or Synchronous mode. This allows silicon vendors to specify, on 1772 // a per-cpu basis what 'ASYNC' should mean. Generally, the expectation is 1773 // "pick the most precise mode that's very fast". 1774 NT_MEMTAG_LEVEL_NONE = 0, 1775 NT_MEMTAG_LEVEL_ASYNC = 1, 1776 NT_MEMTAG_LEVEL_SYNC = 2, 1777 NT_MEMTAG_LEVEL_MASK = 3, 1778 // Bits indicating whether the loader should prepare for MTE to be enabled on 1779 // the heap and/or stack. 1780 NT_MEMTAG_HEAP = 4, 1781 NT_MEMTAG_STACK = 8, 1782 }; 1783 1784 // Property types used in GNU_PROPERTY_TYPE_0 notes. 1785 enum : unsigned { 1786 GNU_PROPERTY_STACK_SIZE = 1, 1787 GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2, 1788 GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000, 1789 GNU_PROPERTY_AARCH64_FEATURE_PAUTH = 0xc0000001, 1790 GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002, 1791 1792 GNU_PROPERTY_X86_UINT32_OR_LO = 0xc0008000, 1793 GNU_PROPERTY_X86_FEATURE_2_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 1, 1794 GNU_PROPERTY_X86_ISA_1_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 2, 1795 1796 GNU_PROPERTY_X86_UINT32_OR_AND_LO = 0xc0010000, 1797 GNU_PROPERTY_X86_FEATURE_2_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 1, 1798 GNU_PROPERTY_X86_ISA_1_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 2, 1799 }; 1800 1801 // aarch64 processor feature bits. 1802 enum : unsigned { 1803 GNU_PROPERTY_AARCH64_FEATURE_1_BTI = 1 << 0, 1804 GNU_PROPERTY_AARCH64_FEATURE_1_PAC = 1 << 1, 1805 GNU_PROPERTY_AARCH64_FEATURE_1_GCS = 1 << 2, 1806 }; 1807 1808 // aarch64 PAuth platforms. 1809 enum : unsigned { 1810 AARCH64_PAUTH_PLATFORM_INVALID = 0x0, 1811 AARCH64_PAUTH_PLATFORM_BAREMETAL = 0x1, 1812 AARCH64_PAUTH_PLATFORM_LLVM_LINUX = 0x10000002, 1813 }; 1814 1815 // Bit positions of version flags for AARCH64_PAUTH_PLATFORM_LLVM_LINUX. 1816 enum : unsigned { 1817 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INTRINSICS = 0, 1818 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_CALLS = 1, 1819 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_RETURNS = 2, 1820 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_AUTHTRAPS = 3, 1821 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_VPTRADDRDISCR = 4, 1822 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_VPTRTYPEDISCR = 5, 1823 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINI = 6, 1824 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINIADDRDISC = 7, 1825 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_GOT = 8, 1826 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_GOTOS = 9, 1827 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_TYPEINFOVPTRDISCR = 10, 1828 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_FPTRTYPEDISCR = 11, 1829 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_LAST = 1830 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_FPTRTYPEDISCR, 1831 }; 1832 1833 // x86 processor feature bits. 1834 enum : unsigned { 1835 GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0, 1836 GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1, 1837 1838 GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0, 1839 GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1, 1840 GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2, 1841 GNU_PROPERTY_X86_FEATURE_2_XMM = 1 << 3, 1842 GNU_PROPERTY_X86_FEATURE_2_YMM = 1 << 4, 1843 GNU_PROPERTY_X86_FEATURE_2_ZMM = 1 << 5, 1844 GNU_PROPERTY_X86_FEATURE_2_FXSR = 1 << 6, 1845 GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7, 1846 GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8, 1847 GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9, 1848 1849 GNU_PROPERTY_X86_ISA_1_BASELINE = 1 << 0, 1850 GNU_PROPERTY_X86_ISA_1_V2 = 1 << 1, 1851 GNU_PROPERTY_X86_ISA_1_V3 = 1 << 2, 1852 GNU_PROPERTY_X86_ISA_1_V4 = 1 << 3, 1853 }; 1854 1855 // FreeBSD note types. 1856 enum { 1857 NT_FREEBSD_ABI_TAG = 1, 1858 NT_FREEBSD_NOINIT_TAG = 2, 1859 NT_FREEBSD_ARCH_TAG = 3, 1860 NT_FREEBSD_FEATURE_CTL = 4, 1861 }; 1862 1863 // NT_FREEBSD_FEATURE_CTL values (see FreeBSD's sys/sys/elf_common.h). 1864 enum { 1865 NT_FREEBSD_FCTL_ASLR_DISABLE = 0x00000001, 1866 NT_FREEBSD_FCTL_PROTMAX_DISABLE = 0x00000002, 1867 NT_FREEBSD_FCTL_STKGAP_DISABLE = 0x00000004, 1868 NT_FREEBSD_FCTL_WXNEEDED = 0x00000008, 1869 NT_FREEBSD_FCTL_LA48 = 0x00000010, 1870 NT_FREEBSD_FCTL_ASG_DISABLE = 0x00000020, 1871 }; 1872 1873 // FreeBSD core note types. 1874 enum { 1875 NT_FREEBSD_THRMISC = 7, 1876 NT_FREEBSD_PROCSTAT_PROC = 8, 1877 NT_FREEBSD_PROCSTAT_FILES = 9, 1878 NT_FREEBSD_PROCSTAT_VMMAP = 10, 1879 NT_FREEBSD_PROCSTAT_GROUPS = 11, 1880 NT_FREEBSD_PROCSTAT_UMASK = 12, 1881 NT_FREEBSD_PROCSTAT_RLIMIT = 13, 1882 NT_FREEBSD_PROCSTAT_OSREL = 14, 1883 NT_FREEBSD_PROCSTAT_PSSTRINGS = 15, 1884 NT_FREEBSD_PROCSTAT_AUXV = 16, 1885 }; 1886 1887 // NetBSD core note types. 1888 enum { 1889 NT_NETBSDCORE_PROCINFO = 1, 1890 NT_NETBSDCORE_AUXV = 2, 1891 NT_NETBSDCORE_LWPSTATUS = 24, 1892 }; 1893 1894 // OpenBSD core note types. 1895 enum { 1896 NT_OPENBSD_PROCINFO = 10, 1897 NT_OPENBSD_AUXV = 11, 1898 NT_OPENBSD_REGS = 20, 1899 NT_OPENBSD_FPREGS = 21, 1900 NT_OPENBSD_XFPREGS = 22, 1901 NT_OPENBSD_WCOOKIE = 23, 1902 }; 1903 1904 // AMDGPU-specific section indices. 1905 enum { 1906 SHN_AMDGPU_LDS = 0xff00, // Variable in LDS; symbol encoded like SHN_COMMON 1907 }; 1908 1909 // AMD vendor specific notes. (Code Object V2) 1910 enum { 1911 NT_AMD_HSA_CODE_OBJECT_VERSION = 1, 1912 NT_AMD_HSA_HSAIL = 2, 1913 NT_AMD_HSA_ISA_VERSION = 3, 1914 // Note types with values between 4 and 9 (inclusive) are reserved. 1915 NT_AMD_HSA_METADATA = 10, 1916 NT_AMD_HSA_ISA_NAME = 11, 1917 NT_AMD_PAL_METADATA = 12 1918 }; 1919 1920 // AMDGPU vendor specific notes. (Code Object V3) 1921 enum { 1922 // Note types with values between 0 and 31 (inclusive) are reserved. 1923 NT_AMDGPU_METADATA = 32 1924 }; 1925 1926 // LLVMOMPOFFLOAD specific notes. 1927 enum : unsigned { 1928 NT_LLVM_OPENMP_OFFLOAD_VERSION = 1, 1929 NT_LLVM_OPENMP_OFFLOAD_PRODUCER = 2, 1930 NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION = 3 1931 }; 1932 1933 enum { 1934 GNU_ABI_TAG_LINUX = 0, 1935 GNU_ABI_TAG_HURD = 1, 1936 GNU_ABI_TAG_SOLARIS = 2, 1937 GNU_ABI_TAG_FREEBSD = 3, 1938 GNU_ABI_TAG_NETBSD = 4, 1939 GNU_ABI_TAG_SYLLABLE = 5, 1940 GNU_ABI_TAG_NACL = 6, 1941 }; 1942 1943 constexpr const char *ELF_NOTE_GNU = "GNU"; 1944 1945 // Android packed relocation group flags. 1946 enum { 1947 RELOCATION_GROUPED_BY_INFO_FLAG = 1, 1948 RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2, 1949 RELOCATION_GROUPED_BY_ADDEND_FLAG = 4, 1950 RELOCATION_GROUP_HAS_ADDEND_FLAG = 8, 1951 }; 1952 1953 // Compressed section header for ELF32. 1954 struct Elf32_Chdr { 1955 Elf32_Word ch_type; 1956 Elf32_Word ch_size; 1957 Elf32_Word ch_addralign; 1958 }; 1959 1960 // Compressed section header for ELF64. 1961 struct Elf64_Chdr { 1962 Elf64_Word ch_type; 1963 Elf64_Word ch_reserved; 1964 Elf64_Xword ch_size; 1965 Elf64_Xword ch_addralign; 1966 }; 1967 1968 // Note header for ELF32. 1969 struct Elf32_Nhdr { 1970 Elf32_Word n_namesz; 1971 Elf32_Word n_descsz; 1972 Elf32_Word n_type; 1973 }; 1974 1975 // Note header for ELF64. 1976 struct Elf64_Nhdr { 1977 Elf64_Word n_namesz; 1978 Elf64_Word n_descsz; 1979 Elf64_Word n_type; 1980 }; 1981 1982 // Legal values for ch_type field of compressed section header. 1983 enum { 1984 ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm. 1985 ELFCOMPRESS_ZSTD = 2, // Zstandard algorithm 1986 ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific. 1987 ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific. 1988 ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific. 1989 ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific. 1990 }; 1991 1992 constexpr unsigned CREL_HDR_ADDEND = 4; 1993 1994 /// Convert an architecture name into ELF's e_machine value. 1995 uint16_t convertArchNameToEMachine(StringRef Arch); 1996 1997 /// Convert an ELF's e_machine value into an architecture name. 1998 StringRef convertEMachineToArchName(uint16_t EMachine); 1999 2000 // Convert a lowercase string identifier into an OSABI value. 2001 uint8_t convertNameToOSABI(StringRef Name); 2002 2003 // Convert an OSABI value into a string that identifies the OS- or ABI- 2004 // specific ELF extension. 2005 StringRef convertOSABIToName(uint8_t OSABI); 2006 2007 } // end namespace ELF 2008 } // end namespace llvm 2009 2010 #endif // LLVM_BINARYFORMAT_ELF_H 2011