ELF.h revision 34a9d4b3b9b7858b729a1af67afa721c048fe5e7
1//===-- llvm/Support/ELF.h - ELF constants and data 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_SUPPORT_ELF_H 21#define LLVM_SUPPORT_ELF_H 22 23#include "llvm/Support/DataTypes.h" 24#include <cstring> 25 26namespace llvm { 27 28namespace ELF { 29 30typedef uint32_t Elf32_Addr; // Program address 31typedef uint32_t Elf32_Off; // File offset 32typedef uint16_t Elf32_Half; 33typedef uint32_t Elf32_Word; 34typedef int32_t Elf32_Sword; 35 36typedef uint64_t Elf64_Addr; 37typedef uint64_t Elf64_Off; 38typedef uint16_t Elf64_Half; 39typedef uint32_t Elf64_Word; 40typedef int32_t Elf64_Sword; 41typedef uint64_t Elf64_Xword; 42typedef int64_t Elf64_Sxword; 43 44// Object file magic string. 45static const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' }; 46 47// e_ident size and indices. 48enum { 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 62struct 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 bool checkMagic() const { 78 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 79 } 80 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 81 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 82}; 83 84// 64-bit ELF header. Fields are the same as for ELF32, but with different 85// types (see above). 86struct Elf64_Ehdr { 87 unsigned char e_ident[EI_NIDENT]; 88 Elf64_Half e_type; 89 Elf64_Half e_machine; 90 Elf64_Word e_version; 91 Elf64_Addr e_entry; 92 Elf64_Off e_phoff; 93 Elf64_Off e_shoff; 94 Elf64_Word e_flags; 95 Elf64_Half e_ehsize; 96 Elf64_Half e_phentsize; 97 Elf64_Half e_phnum; 98 Elf64_Half e_shentsize; 99 Elf64_Half e_shnum; 100 Elf64_Half e_shstrndx; 101 bool checkMagic() const { 102 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 103 } 104 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 105 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 106}; 107 108// File types 109enum { 110 ET_NONE = 0, // No file type 111 ET_REL = 1, // Relocatable file 112 ET_EXEC = 2, // Executable file 113 ET_DYN = 3, // Shared object file 114 ET_CORE = 4, // Core file 115 ET_LOPROC = 0xff00, // Beginning of processor-specific codes 116 ET_HIPROC = 0xffff // Processor-specific 117}; 118 119// Versioning 120enum { 121 EV_NONE = 0, 122 EV_CURRENT = 1 123}; 124 125// Machine architectures 126enum { 127 EM_NONE = 0, // No machine 128 EM_M32 = 1, // AT&T WE 32100 129 EM_SPARC = 2, // SPARC 130 EM_386 = 3, // Intel 386 131 EM_68K = 4, // Motorola 68000 132 EM_88K = 5, // Motorola 88000 133 EM_486 = 6, // Intel 486 (deprecated) 134 EM_860 = 7, // Intel 80860 135 EM_MIPS = 8, // MIPS R3000 136 EM_S370 = 9, // IBM System/370 137 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian 138 EM_PARISC = 15, // Hewlett-Packard PA-RISC 139 EM_VPP500 = 17, // Fujitsu VPP500 140 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC 141 EM_960 = 19, // Intel 80960 142 EM_PPC = 20, // PowerPC 143 EM_PPC64 = 21, // PowerPC64 144 EM_S390 = 22, // IBM System/390 145 EM_SPU = 23, // IBM SPU/SPC 146 EM_V800 = 36, // NEC V800 147 EM_FR20 = 37, // Fujitsu FR20 148 EM_RH32 = 38, // TRW RH-32 149 EM_RCE = 39, // Motorola RCE 150 EM_ARM = 40, // ARM 151 EM_ALPHA = 41, // DEC Alpha 152 EM_SH = 42, // Hitachi SH 153 EM_SPARCV9 = 43, // SPARC V9 154 EM_TRICORE = 44, // Siemens TriCore 155 EM_ARC = 45, // Argonaut RISC Core 156 EM_H8_300 = 46, // Hitachi H8/300 157 EM_H8_300H = 47, // Hitachi H8/300H 158 EM_H8S = 48, // Hitachi H8S 159 EM_H8_500 = 49, // Hitachi H8/500 160 EM_IA_64 = 50, // Intel IA-64 processor architecture 161 EM_MIPS_X = 51, // Stanford MIPS-X 162 EM_COLDFIRE = 52, // Motorola ColdFire 163 EM_68HC12 = 53, // Motorola M68HC12 164 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator 165 EM_PCP = 55, // Siemens PCP 166 EM_NCPU = 56, // Sony nCPU embedded RISC processor 167 EM_NDR1 = 57, // Denso NDR1 microprocessor 168 EM_STARCORE = 58, // Motorola Star*Core processor 169 EM_ME16 = 59, // Toyota ME16 processor 170 EM_ST100 = 60, // STMicroelectronics ST100 processor 171 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family 172 EM_X86_64 = 62, // AMD x86-64 architecture 173 EM_PDSP = 63, // Sony DSP Processor 174 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 175 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 176 EM_FX66 = 66, // Siemens FX66 microcontroller 177 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller 178 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller 179 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller 180 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller 181 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller 182 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller 183 EM_SVX = 73, // Silicon Graphics SVx 184 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller 185 EM_VAX = 75, // Digital VAX 186 EM_CRIS = 76, // Axis Communications 32-bit embedded processor 187 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor 188 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor 189 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor 190 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor 191 EM_HUANY = 81, // Harvard University machine-independent object files 192 EM_PRISM = 82, // SiTera Prism 193 EM_AVR = 83, // Atmel AVR 8-bit microcontroller 194 EM_FR30 = 84, // Fujitsu FR30 195 EM_D10V = 85, // Mitsubishi D10V 196 EM_D30V = 86, // Mitsubishi D30V 197 EM_V850 = 87, // NEC v850 198 EM_M32R = 88, // Mitsubishi M32R 199 EM_MN10300 = 89, // Matsushita MN10300 200 EM_MN10200 = 90, // Matsushita MN10200 201 EM_PJ = 91, // picoJava 202 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor 203 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old 204 // spelling/synonym: EM_ARC_A5) 205 EM_XTENSA = 94, // Tensilica Xtensa Architecture 206 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor 207 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor 208 EM_NS32K = 97, // National Semiconductor 32000 series 209 EM_TPC = 98, // Tenor Network TPC processor 210 EM_SNP1K = 99, // Trebia SNP 1000 processor 211 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 212 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family 213 EM_MAX = 102, // MAX Processor 214 EM_CR = 103, // National Semiconductor CompactRISC microprocessor 215 EM_F2MC16 = 104, // Fujitsu F2MC16 216 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 217 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor 218 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors 219 EM_SEP = 108, // Sharp embedded microprocessor 220 EM_ARCA = 109, // Arca RISC Microprocessor 221 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC 222 // of Peking University 223 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU 224 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor 225 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor 226 EM_CRX = 114, // National Semiconductor CompactRISC CRX 227 EM_XGATE = 115, // Motorola XGATE embedded processor 228 EM_C166 = 116, // Infineon C16x/XC16x processor 229 EM_M16C = 117, // Renesas M16C series microprocessors 230 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal 231 // Controller 232 EM_CE = 119, // Freescale Communication Engine RISC core 233 EM_M32C = 120, // Renesas M32C series microprocessors 234 EM_TSK3000 = 131, // Altium TSK3000 core 235 EM_RS08 = 132, // Freescale RS08 embedded processor 236 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP 237 // processors 238 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor 239 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor 240 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor 241 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor 242 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture 243 EM_SE_C17 = 139, // Seiko Epson C17 family 244 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family 245 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family 246 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family 247 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor 248 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor 249 EM_R32C = 162, // Renesas R32C series microprocessors 250 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family 251 EM_HEXAGON = 164, // Qualcomm Hexagon processor 252 EM_8051 = 165, // Intel 8051 and variants 253 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable 254 // and extensible RISC processors 255 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC 256 // processor family 257 EM_ECOG1 = 168, // Cyan Technology eCOG1X family 258 EM_ECOG1X = 168, // Cyan Technology eCOG1X family 259 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers 260 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor 261 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor 262 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture 263 EM_RX = 173, // Renesas RX family 264 EM_METAG = 174, // Imagination Technologies META processor 265 // architecture 266 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture 267 EM_ECOG16 = 176, // Cyan Technology eCOG16 family 268 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit 269 // microprocessor 270 EM_ETPU = 178, // Freescale Extended Time Processing Unit 271 EM_SLE9X = 179, // Infineon Technologies SLE9X core 272 EM_L10M = 180, // Intel L10M 273 EM_K10M = 181, // Intel K10M 274 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family 275 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller 276 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family 277 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family 278 EM_MICROBLAZE = 189, // Xilinx MicroBlaze 32-bit RISC soft processor core 279 EM_CUDA = 190, // NVIDIA CUDA architecture 280 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family 281 EM_CLOUDSHIELD = 192, // CloudShield architecture family 282 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family 283 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family 284 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 285 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core 286 EM_RL78 = 197, // Renesas RL78 family 287 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor 288 EM_78KOR = 199, // Renesas 78KOR family 289 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) 290 EM_MBLAZE = 47787 // Xilinx MicroBlaze 291}; 292 293// Object file classes. 294enum { 295 ELFCLASSNONE = 0, 296 ELFCLASS32 = 1, // 32-bit object file 297 ELFCLASS64 = 2 // 64-bit object file 298}; 299 300// Object file byte orderings. 301enum { 302 ELFDATANONE = 0, // Invalid data encoding. 303 ELFDATA2LSB = 1, // Little-endian object file 304 ELFDATA2MSB = 2 // Big-endian object file 305}; 306 307// OS ABI identification. 308enum { 309 ELFOSABI_NONE = 0, // UNIX System V ABI 310 ELFOSABI_HPUX = 1, // HP-UX operating system 311 ELFOSABI_NETBSD = 2, // NetBSD 312 ELFOSABI_LINUX = 3, // GNU/Linux 313 ELFOSABI_HURD = 4, // GNU/Hurd 314 ELFOSABI_SOLARIS = 6, // Solaris 315 ELFOSABI_AIX = 7, // AIX 316 ELFOSABI_IRIX = 8, // IRIX 317 ELFOSABI_FREEBSD = 9, // FreeBSD 318 ELFOSABI_TRU64 = 10, // TRU64 UNIX 319 ELFOSABI_MODESTO = 11, // Novell Modesto 320 ELFOSABI_OPENBSD = 12, // OpenBSD 321 ELFOSABI_OPENVMS = 13, // OpenVMS 322 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 323 ELFOSABI_AROS = 15, // AROS 324 ELFOSABI_FENIXOS = 16, // FenixOS 325 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 326 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 327 ELFOSABI_ARM = 97, // ARM 328 ELFOSABI_STANDALONE = 255 // Standalone (embedded) application 329}; 330 331// X86_64 relocations. 332enum { 333 R_X86_64_NONE = 0, 334 R_X86_64_64 = 1, 335 R_X86_64_PC32 = 2, 336 R_X86_64_GOT32 = 3, 337 R_X86_64_PLT32 = 4, 338 R_X86_64_COPY = 5, 339 R_X86_64_GLOB_DAT = 6, 340 R_X86_64_JUMP_SLOT = 7, 341 R_X86_64_RELATIVE = 8, 342 R_X86_64_GOTPCREL = 9, 343 R_X86_64_32 = 10, 344 R_X86_64_32S = 11, 345 R_X86_64_16 = 12, 346 R_X86_64_PC16 = 13, 347 R_X86_64_8 = 14, 348 R_X86_64_PC8 = 15, 349 R_X86_64_DTPMOD64 = 16, 350 R_X86_64_DTPOFF64 = 17, 351 R_X86_64_TPOFF64 = 18, 352 R_X86_64_TLSGD = 19, 353 R_X86_64_TLSLD = 20, 354 R_X86_64_DTPOFF32 = 21, 355 R_X86_64_GOTTPOFF = 22, 356 R_X86_64_TPOFF32 = 23, 357 R_X86_64_PC64 = 24, 358 R_X86_64_GOTOFF64 = 25, 359 R_X86_64_GOTPC32 = 26, 360 R_X86_64_GOT64 = 27, 361 R_X86_64_GOTPCREL64 = 28, 362 R_X86_64_GOTPC64 = 29, 363 R_X86_64_GOTPLT64 = 30, 364 R_X86_64_PLTOFF64 = 31, 365 R_X86_64_SIZE32 = 32, 366 R_X86_64_SIZE64 = 33, 367 R_X86_64_GOTPC32_TLSDESC = 34, 368 R_X86_64_TLSDESC_CALL = 35, 369 R_X86_64_TLSDESC = 36 370}; 371 372// i386 relocations. 373// TODO: this is just a subset 374enum { 375 R_386_NONE = 0, 376 R_386_32 = 1, 377 R_386_PC32 = 2, 378 R_386_GOT32 = 3, 379 R_386_PLT32 = 4, 380 R_386_COPY = 5, 381 R_386_GLOB_DAT = 6, 382 R_386_JUMP_SLOT = 7, 383 R_386_RELATIVE = 8, 384 R_386_GOTOFF = 9, 385 R_386_GOTPC = 10, 386 R_386_32PLT = 11, 387 R_386_TLS_TPOFF = 14, 388 R_386_TLS_IE = 15, 389 R_386_TLS_GOTIE = 16, 390 R_386_TLS_LE = 17, 391 R_386_TLS_GD = 18, 392 R_386_TLS_LDM = 19, 393 R_386_16 = 20, 394 R_386_PC16 = 21, 395 R_386_8 = 22, 396 R_386_PC8 = 23, 397 R_386_TLS_GD_32 = 24, 398 R_386_TLS_GD_PUSH = 25, 399 R_386_TLS_GD_CALL = 26, 400 R_386_TLS_GD_POP = 27, 401 R_386_TLS_LDM_32 = 28, 402 R_386_TLS_LDM_PUSH = 29, 403 R_386_TLS_LDM_CALL = 30, 404 R_386_TLS_LDM_POP = 31, 405 R_386_TLS_LDO_32 = 32, 406 R_386_TLS_IE_32 = 33, 407 R_386_TLS_LE_32 = 34, 408 R_386_TLS_DTPMOD32 = 35, 409 R_386_TLS_DTPOFF32 = 36, 410 R_386_TLS_TPOFF32 = 37, 411 R_386_TLS_GOTDESC = 39, 412 R_386_TLS_DESC_CALL = 40, 413 R_386_TLS_DESC = 41, 414 R_386_IRELATIVE = 42, 415 R_386_NUM = 43 416}; 417 418// MBlaze relocations. 419enum { 420 R_MICROBLAZE_NONE = 0, 421 R_MICROBLAZE_32 = 1, 422 R_MICROBLAZE_32_PCREL = 2, 423 R_MICROBLAZE_64_PCREL = 3, 424 R_MICROBLAZE_32_PCREL_LO = 4, 425 R_MICROBLAZE_64 = 5, 426 R_MICROBLAZE_32_LO = 6, 427 R_MICROBLAZE_SRO32 = 7, 428 R_MICROBLAZE_SRW32 = 8, 429 R_MICROBLAZE_64_NONE = 9, 430 R_MICROBLAZE_32_SYM_OP_SYM = 10, 431 R_MICROBLAZE_GNU_VTINHERIT = 11, 432 R_MICROBLAZE_GNU_VTENTRY = 12, 433 R_MICROBLAZE_GOTPC_64 = 13, 434 R_MICROBLAZE_GOT_64 = 14, 435 R_MICROBLAZE_PLT_64 = 15, 436 R_MICROBLAZE_REL = 16, 437 R_MICROBLAZE_JUMP_SLOT = 17, 438 R_MICROBLAZE_GLOB_DAT = 18, 439 R_MICROBLAZE_GOTOFF_64 = 19, 440 R_MICROBLAZE_GOTOFF_32 = 20, 441 R_MICROBLAZE_COPY = 21 442}; 443 444// ELF Relocation types for PPC32 445enum { 446 R_PPC_NONE = 0, /* No relocation. */ 447 R_PPC_ADDR32 = 1, 448 R_PPC_ADDR24 = 2, 449 R_PPC_ADDR16 = 3, 450 R_PPC_ADDR16_LO = 4, 451 R_PPC_ADDR16_HI = 5, 452 R_PPC_ADDR16_HA = 6, 453 R_PPC_ADDR14 = 7, 454 R_PPC_ADDR14_BRTAKEN = 8, 455 R_PPC_ADDR14_BRNTAKEN = 9, 456 R_PPC_REL24 = 10, 457 R_PPC_REL14 = 11, 458 R_PPC_REL14_BRTAKEN = 12, 459 R_PPC_REL14_BRNTAKEN = 13, 460 R_PPC_REL32 = 26, 461 R_PPC_TPREL16_LO = 70, 462 R_PPC_TPREL16_HA = 72 463}; 464 465// ELF Relocation types for PPC64 466enum { 467 R_PPC64_ADDR16_LO = 4, 468 R_PPC64_ADDR16_HI = 5, 469 R_PPC64_ADDR14 = 7, 470 R_PPC64_REL24 = 10, 471 R_PPC64_ADDR64 = 38, 472 R_PPC64_ADDR16_HIGHER = 39, 473 R_PPC64_ADDR16_HIGHEST = 41, 474 R_PPC64_TOC16 = 47, 475 R_PPC64_TOC16_LO = 48, 476 R_PPC64_TOC16_HA = 50, 477 R_PPC64_TOC = 51, 478 R_PPC64_TOC16_DS = 63, 479 R_PPC64_TOC16_LO_DS = 64 480}; 481 482// ARM Specific e_flags 483enum { EF_ARM_EABIMASK = 0xFF000000U }; 484 485// ELF Relocation types for ARM 486// Meets 2.08 ABI Specs. 487 488enum { 489 R_ARM_NONE = 0x00, 490 R_ARM_PC24 = 0x01, 491 R_ARM_ABS32 = 0x02, 492 R_ARM_REL32 = 0x03, 493 R_ARM_LDR_PC_G0 = 0x04, 494 R_ARM_ABS16 = 0x05, 495 R_ARM_ABS12 = 0x06, 496 R_ARM_THM_ABS5 = 0x07, 497 R_ARM_ABS8 = 0x08, 498 R_ARM_SBREL32 = 0x09, 499 R_ARM_THM_CALL = 0x0a, 500 R_ARM_THM_PC8 = 0x0b, 501 R_ARM_BREL_ADJ = 0x0c, 502 R_ARM_TLS_DESC = 0x0d, 503 R_ARM_THM_SWI8 = 0x0e, 504 R_ARM_XPC25 = 0x0f, 505 R_ARM_THM_XPC22 = 0x10, 506 R_ARM_TLS_DTPMOD32 = 0x11, 507 R_ARM_TLS_DTPOFF32 = 0x12, 508 R_ARM_TLS_TPOFF32 = 0x13, 509 R_ARM_COPY = 0x14, 510 R_ARM_GLOB_DAT = 0x15, 511 R_ARM_JUMP_SLOT = 0x16, 512 R_ARM_RELATIVE = 0x17, 513 R_ARM_GOTOFF32 = 0x18, 514 R_ARM_BASE_PREL = 0x19, 515 R_ARM_GOT_BREL = 0x1a, 516 R_ARM_PLT32 = 0x1b, 517 R_ARM_CALL = 0x1c, 518 R_ARM_JUMP24 = 0x1d, 519 R_ARM_THM_JUMP24 = 0x1e, 520 R_ARM_BASE_ABS = 0x1f, 521 R_ARM_ALU_PCREL_7_0 = 0x20, 522 R_ARM_ALU_PCREL_15_8 = 0x21, 523 R_ARM_ALU_PCREL_23_15 = 0x22, 524 R_ARM_LDR_SBREL_11_0_NC = 0x23, 525 R_ARM_ALU_SBREL_19_12_NC = 0x24, 526 R_ARM_ALU_SBREL_27_20_CK = 0x25, 527 R_ARM_TARGET1 = 0x26, 528 R_ARM_SBREL31 = 0x27, 529 R_ARM_V4BX = 0x28, 530 R_ARM_TARGET2 = 0x29, 531 R_ARM_PREL31 = 0x2a, 532 R_ARM_MOVW_ABS_NC = 0x2b, 533 R_ARM_MOVT_ABS = 0x2c, 534 R_ARM_MOVW_PREL_NC = 0x2d, 535 R_ARM_MOVT_PREL = 0x2e, 536 R_ARM_THM_MOVW_ABS_NC = 0x2f, 537 R_ARM_THM_MOVT_ABS = 0x30, 538 R_ARM_THM_MOVW_PREL_NC = 0x31, 539 R_ARM_THM_MOVT_PREL = 0x32, 540 R_ARM_THM_JUMP19 = 0x33, 541 R_ARM_THM_JUMP6 = 0x34, 542 R_ARM_THM_ALU_PREL_11_0 = 0x35, 543 R_ARM_THM_PC12 = 0x36, 544 R_ARM_ABS32_NOI = 0x37, 545 R_ARM_REL32_NOI = 0x38, 546 R_ARM_ALU_PC_G0_NC = 0x39, 547 R_ARM_ALU_PC_G0 = 0x3a, 548 R_ARM_ALU_PC_G1_NC = 0x3b, 549 R_ARM_ALU_PC_G1 = 0x3c, 550 R_ARM_ALU_PC_G2 = 0x3d, 551 R_ARM_LDR_PC_G1 = 0x3e, 552 R_ARM_LDR_PC_G2 = 0x3f, 553 R_ARM_LDRS_PC_G0 = 0x40, 554 R_ARM_LDRS_PC_G1 = 0x41, 555 R_ARM_LDRS_PC_G2 = 0x42, 556 R_ARM_LDC_PC_G0 = 0x43, 557 R_ARM_LDC_PC_G1 = 0x44, 558 R_ARM_LDC_PC_G2 = 0x45, 559 R_ARM_ALU_SB_G0_NC = 0x46, 560 R_ARM_ALU_SB_G0 = 0x47, 561 R_ARM_ALU_SB_G1_NC = 0x48, 562 R_ARM_ALU_SB_G1 = 0x49, 563 R_ARM_ALU_SB_G2 = 0x4a, 564 R_ARM_LDR_SB_G0 = 0x4b, 565 R_ARM_LDR_SB_G1 = 0x4c, 566 R_ARM_LDR_SB_G2 = 0x4d, 567 R_ARM_LDRS_SB_G0 = 0x4e, 568 R_ARM_LDRS_SB_G1 = 0x4f, 569 R_ARM_LDRS_SB_G2 = 0x50, 570 R_ARM_LDC_SB_G0 = 0x51, 571 R_ARM_LDC_SB_G1 = 0x52, 572 R_ARM_LDC_SB_G2 = 0x53, 573 R_ARM_MOVW_BREL_NC = 0x54, 574 R_ARM_MOVT_BREL = 0x55, 575 R_ARM_MOVW_BREL = 0x56, 576 R_ARM_THM_MOVW_BREL_NC = 0x57, 577 R_ARM_THM_MOVT_BREL = 0x58, 578 R_ARM_THM_MOVW_BREL = 0x59, 579 R_ARM_TLS_GOTDESC = 0x5a, 580 R_ARM_TLS_CALL = 0x5b, 581 R_ARM_TLS_DESCSEQ = 0x5c, 582 R_ARM_THM_TLS_CALL = 0x5d, 583 R_ARM_PLT32_ABS = 0x5e, 584 R_ARM_GOT_ABS = 0x5f, 585 R_ARM_GOT_PREL = 0x60, 586 R_ARM_GOT_BREL12 = 0x61, 587 R_ARM_GOTOFF12 = 0x62, 588 R_ARM_GOTRELAX = 0x63, 589 R_ARM_GNU_VTENTRY = 0x64, 590 R_ARM_GNU_VTINHERIT = 0x65, 591 R_ARM_THM_JUMP11 = 0x66, 592 R_ARM_THM_JUMP8 = 0x67, 593 R_ARM_TLS_GD32 = 0x68, 594 R_ARM_TLS_LDM32 = 0x69, 595 R_ARM_TLS_LDO32 = 0x6a, 596 R_ARM_TLS_IE32 = 0x6b, 597 R_ARM_TLS_LE32 = 0x6c, 598 R_ARM_TLS_LDO12 = 0x6d, 599 R_ARM_TLS_LE12 = 0x6e, 600 R_ARM_TLS_IE12GP = 0x6f, 601 R_ARM_PRIVATE_0 = 0x70, 602 R_ARM_PRIVATE_1 = 0x71, 603 R_ARM_PRIVATE_2 = 0x72, 604 R_ARM_PRIVATE_3 = 0x73, 605 R_ARM_PRIVATE_4 = 0x74, 606 R_ARM_PRIVATE_5 = 0x75, 607 R_ARM_PRIVATE_6 = 0x76, 608 R_ARM_PRIVATE_7 = 0x77, 609 R_ARM_PRIVATE_8 = 0x78, 610 R_ARM_PRIVATE_9 = 0x79, 611 R_ARM_PRIVATE_10 = 0x7a, 612 R_ARM_PRIVATE_11 = 0x7b, 613 R_ARM_PRIVATE_12 = 0x7c, 614 R_ARM_PRIVATE_13 = 0x7d, 615 R_ARM_PRIVATE_14 = 0x7e, 616 R_ARM_PRIVATE_15 = 0x7f, 617 R_ARM_ME_TOO = 0x80, 618 R_ARM_THM_TLS_DESCSEQ16 = 0x81, 619 R_ARM_THM_TLS_DESCSEQ32 = 0x82 620}; 621 622// Mips Specific e_flags 623enum { 624 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions 625 EF_MIPS_PIC = 0x00000002, // Position independent code 626 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code 627 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set 628 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set 629 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set 630 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set 631 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set 632 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h 633 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h 634 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2 635 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2 636 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant 637}; 638 639// ELF Relocation types for Mips 640// . 641enum { 642 R_MIPS_NONE = 0, 643 R_MIPS_16 = 1, 644 R_MIPS_32 = 2, 645 R_MIPS_REL32 = 3, 646 R_MIPS_26 = 4, 647 R_MIPS_HI16 = 5, 648 R_MIPS_LO16 = 6, 649 R_MIPS_GPREL16 = 7, 650 R_MIPS_LITERAL = 8, 651 R_MIPS_GOT16 = 9, 652 R_MIPS_GOT = 9, 653 R_MIPS_PC16 = 10, 654 R_MIPS_CALL16 = 11, 655 R_MIPS_GPREL32 = 12, 656 R_MIPS_SHIFT5 = 16, 657 R_MIPS_SHIFT6 = 17, 658 R_MIPS_64 = 18, 659 R_MIPS_GOT_DISP = 19, 660 R_MIPS_GOT_PAGE = 20, 661 R_MIPS_GOT_OFST = 21, 662 R_MIPS_GOT_HI16 = 22, 663 R_MIPS_GOT_LO16 = 23, 664 R_MIPS_SUB = 24, 665 R_MIPS_INSERT_A = 25, 666 R_MIPS_INSERT_B = 26, 667 R_MIPS_DELETE = 27, 668 R_MIPS_HIGHER = 28, 669 R_MIPS_HIGHEST = 29, 670 R_MIPS_CALL_HI16 = 30, 671 R_MIPS_CALL_LO16 = 31, 672 R_MIPS_SCN_DISP = 32, 673 R_MIPS_REL16 = 33, 674 R_MIPS_ADD_IMMEDIATE = 34, 675 R_MIPS_PJUMP = 35, 676 R_MIPS_RELGOT = 36, 677 R_MIPS_JALR = 37, 678 R_MIPS_TLS_DTPMOD32 = 38, 679 R_MIPS_TLS_DTPREL32 = 39, 680 R_MIPS_TLS_DTPMOD64 = 40, 681 R_MIPS_TLS_DTPREL64 = 41, 682 R_MIPS_TLS_GD = 42, 683 R_MIPS_TLS_LDM = 43, 684 R_MIPS_TLS_DTPREL_HI16 = 44, 685 R_MIPS_TLS_DTPREL_LO16 = 45, 686 R_MIPS_TLS_GOTTPREL = 46, 687 R_MIPS_TLS_TPREL32 = 47, 688 R_MIPS_TLS_TPREL64 = 48, 689 R_MIPS_TLS_TPREL_HI16 = 49, 690 R_MIPS_TLS_TPREL_LO16 = 50, 691 R_MIPS_GLOB_DAT = 51, 692 R_MIPS_COPY = 126, 693 R_MIPS_JUMP_SLOT = 127, 694 R_MIPS_NUM = 218 695}; 696 697// Hexagon Specific e_flags 698// Release 5 ABI 699enum { 700 // Object processor version flags, bits[3:0] 701 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2 702 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3 703 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4 704 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5 705 706 // Highest ISA version flags 707 EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[3:0] 708 // of e_flags 709 EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA 710 EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA 711 EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA 712 EF_HEXAGON_ISA_V5 = 0x00000040 // Hexagon V5 ISA 713}; 714 715// Hexagon specific Section indexes for common small data 716// Release 5 ABI 717enum { 718 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes 719 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access 720 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access 721 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access 722 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access 723}; 724 725// ELF Relocation types for Hexagon 726// Release 5 ABI 727enum { 728 R_HEX_NONE = 0, 729 R_HEX_B22_PCREL = 1, 730 R_HEX_B15_PCREL = 2, 731 R_HEX_B7_PCREL = 3, 732 R_HEX_LO16 = 4, 733 R_HEX_HI16 = 5, 734 R_HEX_32 = 6, 735 R_HEX_16 = 7, 736 R_HEX_8 = 8, 737 R_HEX_GPREL16_0 = 9, 738 R_HEX_GPREL16_1 = 10, 739 R_HEX_GPREL16_2 = 11, 740 R_HEX_GPREL16_3 = 12, 741 R_HEX_HL16 = 13, 742 R_HEX_B13_PCREL = 14, 743 R_HEX_B9_PCREL = 15, 744 R_HEX_B32_PCREL_X = 16, 745 R_HEX_32_6_X = 17, 746 R_HEX_B22_PCREL_X = 18, 747 R_HEX_B15_PCREL_X = 19, 748 R_HEX_B13_PCREL_X = 20, 749 R_HEX_B9_PCREL_X = 21, 750 R_HEX_B7_PCREL_X = 22, 751 R_HEX_16_X = 23, 752 R_HEX_12_X = 24, 753 R_HEX_11_X = 25, 754 R_HEX_10_X = 26, 755 R_HEX_9_X = 27, 756 R_HEX_8_X = 28, 757 R_HEX_7_X = 29, 758 R_HEX_6_X = 30, 759 R_HEX_32_PCREL = 31, 760 R_HEX_COPY = 32, 761 R_HEX_GLOB_DAT = 33, 762 R_HEX_JMP_SLOT = 34, 763 R_HEX_RELATIVE = 35, 764 R_HEX_PLT_B22_PCREL = 36, 765 R_HEX_GOTREL_LO16 = 37, 766 R_HEX_GOTREL_HI16 = 38, 767 R_HEX_GOTREL_32 = 39, 768 R_HEX_GOT_LO16 = 40, 769 R_HEX_GOT_HI16 = 41, 770 R_HEX_GOT_32 = 42, 771 R_HEX_GOT_16 = 43, 772 R_HEX_DTPMOD_32 = 44, 773 R_HEX_DTPREL_LO16 = 45, 774 R_HEX_DTPREL_HI16 = 46, 775 R_HEX_DTPREL_32 = 47, 776 R_HEX_DTPREL_16 = 48, 777 R_HEX_GD_PLT_B22_PCREL = 49, 778 R_HEX_GD_GOT_LO16 = 50, 779 R_HEX_GD_GOT_HI16 = 51, 780 R_HEX_GD_GOT_32 = 52, 781 R_HEX_GD_GOT_16 = 53, 782 R_HEX_IE_LO16 = 54, 783 R_HEX_IE_HI16 = 55, 784 R_HEX_IE_32 = 56, 785 R_HEX_IE_GOT_LO16 = 57, 786 R_HEX_IE_GOT_HI16 = 58, 787 R_HEX_IE_GOT_32 = 59, 788 R_HEX_IE_GOT_16 = 60, 789 R_HEX_TPREL_LO16 = 61, 790 R_HEX_TPREL_HI16 = 62, 791 R_HEX_TPREL_32 = 63, 792 R_HEX_TPREL_16 = 64, 793 R_HEX_6_PCREL_X = 65, 794 R_HEX_GOTREL_32_6_X = 66, 795 R_HEX_GOTREL_16_X = 67, 796 R_HEX_GOTREL_11_X = 68, 797 R_HEX_GOT_32_6_X = 69, 798 R_HEX_GOT_16_X = 70, 799 R_HEX_GOT_11_X = 71, 800 R_HEX_DTPREL_32_6_X = 72, 801 R_HEX_DTPREL_16_X = 73, 802 R_HEX_DTPREL_11_X = 74, 803 R_HEX_GD_GOT_32_6_X = 75, 804 R_HEX_GD_GOT_16_X = 76, 805 R_HEX_GD_GOT_11_X = 77, 806 R_HEX_IE_32_6_X = 78, 807 R_HEX_IE_16_X = 79, 808 R_HEX_IE_GOT_32_6_X = 80, 809 R_HEX_IE_GOT_16_X = 81, 810 R_HEX_IE_GOT_11_X = 82, 811 R_HEX_TPREL_32_6_X = 83, 812 R_HEX_TPREL_16_X = 84, 813 R_HEX_TPREL_11_X = 85 814}; 815 816// Section header. 817struct Elf32_Shdr { 818 Elf32_Word sh_name; // Section name (index into string table) 819 Elf32_Word sh_type; // Section type (SHT_*) 820 Elf32_Word sh_flags; // Section flags (SHF_*) 821 Elf32_Addr sh_addr; // Address where section is to be loaded 822 Elf32_Off sh_offset; // File offset of section data, in bytes 823 Elf32_Word sh_size; // Size of section, in bytes 824 Elf32_Word sh_link; // Section type-specific header table index link 825 Elf32_Word sh_info; // Section type-specific extra information 826 Elf32_Word sh_addralign; // Section address alignment 827 Elf32_Word sh_entsize; // Size of records contained within the section 828}; 829 830// Section header for ELF64 - same fields as ELF32, different types. 831struct Elf64_Shdr { 832 Elf64_Word sh_name; 833 Elf64_Word sh_type; 834 Elf64_Xword sh_flags; 835 Elf64_Addr sh_addr; 836 Elf64_Off sh_offset; 837 Elf64_Xword sh_size; 838 Elf64_Word sh_link; 839 Elf64_Word sh_info; 840 Elf64_Xword sh_addralign; 841 Elf64_Xword sh_entsize; 842}; 843 844// Special section indices. 845enum { 846 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 847 SHN_LORESERVE = 0xff00, // Lowest reserved index 848 SHN_LOPROC = 0xff00, // Lowest processor-specific index 849 SHN_HIPROC = 0xff1f, // Highest processor-specific index 850 SHN_LOOS = 0xff20, // Lowest operating system-specific index 851 SHN_HIOS = 0xff3f, // Highest operating system-specific index 852 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 853 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 854 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 855 SHN_HIRESERVE = 0xffff // Highest reserved index 856}; 857 858// Section types. 859enum { 860 SHT_NULL = 0, // No associated section (inactive entry). 861 SHT_PROGBITS = 1, // Program-defined contents. 862 SHT_SYMTAB = 2, // Symbol table. 863 SHT_STRTAB = 3, // String table. 864 SHT_RELA = 4, // Relocation entries; explicit addends. 865 SHT_HASH = 5, // Symbol hash table. 866 SHT_DYNAMIC = 6, // Information for dynamic linking. 867 SHT_NOTE = 7, // Information about the file. 868 SHT_NOBITS = 8, // Data occupies no space in the file. 869 SHT_REL = 9, // Relocation entries; no explicit addends. 870 SHT_SHLIB = 10, // Reserved. 871 SHT_DYNSYM = 11, // Symbol table. 872 SHT_INIT_ARRAY = 14, // Pointers to initialization functions. 873 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 874 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 875 SHT_GROUP = 17, // Section group. 876 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. 877 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 878 SHT_GNU_ATTRIBUTES= 0x6ffffff5, // Object attributes. 879 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table. 880 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. 881 SHT_GNU_verneed = 0x6ffffffe, // GNU version references. 882 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. 883 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 884 SHT_LOPROC = 0x70000000, // Lowest processor architecture-specific type. 885 // Fixme: All this is duplicated in MCSectionELF. Why?? 886 // Exception Index table 887 SHT_ARM_EXIDX = 0x70000001U, 888 // BPABI DLL dynamic linking pre-emption map 889 SHT_ARM_PREEMPTMAP = 0x70000002U, 890 // Object file compatibility attributes 891 SHT_ARM_ATTRIBUTES = 0x70000003U, 892 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 893 SHT_ARM_OVERLAYSECTION = 0x70000005U, 894 895 SHT_X86_64_UNWIND = 0x70000001, // Unwind information 896 897 SHT_HIPROC = 0x7fffffff, // Highest processor architecture-specific type. 898 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 899 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 900}; 901 902// Section flags. 903enum { 904 // Section data should be writable during execution. 905 SHF_WRITE = 0x1, 906 907 // Section occupies memory during program execution. 908 SHF_ALLOC = 0x2, 909 910 // Section contains executable machine instructions. 911 SHF_EXECINSTR = 0x4, 912 913 // The data in this section may be merged. 914 SHF_MERGE = 0x10, 915 916 // The data in this section is null-terminated strings. 917 SHF_STRINGS = 0x20, 918 919 // A field in this section holds a section header table index. 920 SHF_INFO_LINK = 0x40U, 921 922 // Adds special ordering requirements for link editors. 923 SHF_LINK_ORDER = 0x80U, 924 925 // This section requires special OS-specific processing to avoid incorrect 926 // behavior. 927 SHF_OS_NONCONFORMING = 0x100U, 928 929 // This section is a member of a section group. 930 SHF_GROUP = 0x200U, 931 932 // This section holds Thread-Local Storage. 933 SHF_TLS = 0x400U, 934 935 // Start of target-specific flags. 936 937 /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped 938 /// together by the linker to form the constant pool and the cp register is 939 /// set to the start of the constant pool by the boot code. 940 XCORE_SHF_CP_SECTION = 0x800U, 941 942 /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped 943 /// together by the linker to form the data section and the dp register is 944 /// set to the start of the section by the boot code. 945 XCORE_SHF_DP_SECTION = 0x1000U, 946 947 SHF_MASKOS = 0x0ff00000, 948 949 // Bits indicating processor-specific flags. 950 SHF_MASKPROC = 0xf0000000, 951 952 // If an object file section does not have this flag set, then it may not hold 953 // more than 2GB and can be freely referred to in objects using smaller code 954 // models. Otherwise, only objects using larger code models can refer to them. 955 // For example, a medium code model object can refer to data in a section that 956 // sets this flag besides being able to refer to data in a section that does 957 // not set it; likewise, a small code model object can refer only to code in a 958 // section that does not set this flag. 959 SHF_X86_64_LARGE = 0x10000000 960}; 961 962// Section Group Flags 963enum { 964 GRP_COMDAT = 0x1, 965 GRP_MASKOS = 0x0ff00000, 966 GRP_MASKPROC = 0xf0000000 967}; 968 969// Symbol table entries for ELF32. 970struct Elf32_Sym { 971 Elf32_Word st_name; // Symbol name (index into string table) 972 Elf32_Addr st_value; // Value or address associated with the symbol 973 Elf32_Word st_size; // Size of the symbol 974 unsigned char st_info; // Symbol's type and binding attributes 975 unsigned char st_other; // Must be zero; reserved 976 Elf32_Half st_shndx; // Which section (header table index) it's defined in 977 978 // These accessors and mutators correspond to the ELF32_ST_BIND, 979 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 980 unsigned char getBinding() const { return st_info >> 4; } 981 unsigned char getType() const { return st_info & 0x0f; } 982 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 983 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 984 void setBindingAndType(unsigned char b, unsigned char t) { 985 st_info = (b << 4) + (t & 0x0f); 986 } 987}; 988 989// Symbol table entries for ELF64. 990struct Elf64_Sym { 991 Elf64_Word st_name; // Symbol name (index into string table) 992 unsigned char st_info; // Symbol's type and binding attributes 993 unsigned char st_other; // Must be zero; reserved 994 Elf64_Half st_shndx; // Which section (header table index) it's defined in 995 Elf64_Addr st_value; // Value or address associated with the symbol 996 Elf64_Xword st_size; // Size of the symbol 997 998 // These accessors and mutators are identical to those defined for ELF32 999 // symbol table entries. 1000 unsigned char getBinding() const { return st_info >> 4; } 1001 unsigned char getType() const { return st_info & 0x0f; } 1002 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1003 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1004 void setBindingAndType(unsigned char b, unsigned char t) { 1005 st_info = (b << 4) + (t & 0x0f); 1006 } 1007}; 1008 1009// The size (in bytes) of symbol table entries. 1010enum { 1011 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 1012 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 1013}; 1014 1015// Symbol bindings. 1016enum { 1017 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 1018 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 1019 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 1020 STB_LOOS = 10, // Lowest operating system-specific binding type 1021 STB_HIOS = 12, // Highest operating system-specific binding type 1022 STB_LOPROC = 13, // Lowest processor-specific binding type 1023 STB_HIPROC = 15 // Highest processor-specific binding type 1024}; 1025 1026// Symbol types. 1027enum { 1028 STT_NOTYPE = 0, // Symbol's type is not specified 1029 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 1030 STT_FUNC = 2, // Symbol is executable code (function, etc.) 1031 STT_SECTION = 3, // Symbol refers to a section 1032 STT_FILE = 4, // Local, absolute symbol that refers to a file 1033 STT_COMMON = 5, // An uninitialized common block 1034 STT_TLS = 6, // Thread local data object 1035 STT_LOOS = 7, // Lowest operating system-specific symbol type 1036 STT_HIOS = 8, // Highest operating system-specific symbol type 1037 STT_GNU_IFUNC = 10, // GNU indirect function 1038 STT_LOPROC = 13, // Lowest processor-specific symbol type 1039 STT_HIPROC = 15 // Highest processor-specific symbol type 1040}; 1041 1042enum { 1043 STV_DEFAULT = 0, // Visibility is specified by binding type 1044 STV_INTERNAL = 1, // Defined by processor supplements 1045 STV_HIDDEN = 2, // Not visible to other components 1046 STV_PROTECTED = 3 // Visible in other components but not preemptable 1047}; 1048 1049// Relocation entry, without explicit addend. 1050struct Elf32_Rel { 1051 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1052 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1053 1054 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1055 // and ELF32_R_INFO macros defined in the ELF specification: 1056 Elf32_Word getSymbol() const { return (r_info >> 8); } 1057 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 1058 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1059 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1060 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1061 r_info = (s << 8) + t; 1062 } 1063}; 1064 1065// Relocation entry with explicit addend. 1066struct Elf32_Rela { 1067 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1068 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1069 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 1070 1071 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1072 // and ELF32_R_INFO macros defined in the ELF specification: 1073 Elf32_Word getSymbol() const { return (r_info >> 8); } 1074 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 1075 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1076 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1077 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1078 r_info = (s << 8) + t; 1079 } 1080}; 1081 1082// Relocation entry, without explicit addend. 1083struct Elf64_Rel { 1084 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1085 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1086 1087 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1088 // and ELF64_R_INFO macros defined in the ELF specification: 1089 Elf64_Xword getSymbol() const { return (r_info >> 32); } 1090 unsigned char getType() const { 1091 return (unsigned char) (r_info & 0xffffffffL); 1092 } 1093 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1094 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1095 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 1096 r_info = (s << 32) + (t&0xffffffffL); 1097 } 1098}; 1099 1100// Relocation entry with explicit addend. 1101struct Elf64_Rela { 1102 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1103 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1104 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 1105 1106 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1107 // and ELF64_R_INFO macros defined in the ELF specification: 1108 Elf64_Xword getSymbol() const { return (r_info >> 32); } 1109 unsigned char getType() const { 1110 return (unsigned char) (r_info & 0xffffffffL); 1111 } 1112 void setSymbol(Elf64_Xword s) { setSymbolAndType(s, getType()); } 1113 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1114 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 1115 r_info = (s << 32) + (t&0xffffffffL); 1116 } 1117}; 1118 1119// Program header for ELF32. 1120struct Elf32_Phdr { 1121 Elf32_Word p_type; // Type of segment 1122 Elf32_Off p_offset; // File offset where segment is located, in bytes 1123 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 1124 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 1125 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 1126 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 1127 Elf32_Word p_flags; // Segment flags 1128 Elf32_Word p_align; // Segment alignment constraint 1129}; 1130 1131// Program header for ELF64. 1132struct Elf64_Phdr { 1133 Elf64_Word p_type; // Type of segment 1134 Elf64_Word p_flags; // Segment flags 1135 Elf64_Off p_offset; // File offset where segment is located, in bytes 1136 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 1137 Elf64_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 1138 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 1139 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 1140 Elf64_Xword p_align; // Segment alignment constraint 1141}; 1142 1143// Segment types. 1144enum { 1145 PT_NULL = 0, // Unused segment. 1146 PT_LOAD = 1, // Loadable segment. 1147 PT_DYNAMIC = 2, // Dynamic linking information. 1148 PT_INTERP = 3, // Interpreter pathname. 1149 PT_NOTE = 4, // Auxiliary information. 1150 PT_SHLIB = 5, // Reserved. 1151 PT_PHDR = 6, // The program header table itself. 1152 PT_TLS = 7, // The thread-local storage template. 1153 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. 1154 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. 1155 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 1156 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type. 1157 1158 // x86-64 program header types. 1159 // These all contain stack unwind tables. 1160 PT_GNU_EH_FRAME = 0x6474e550, 1161 PT_SUNW_EH_FRAME = 0x6474e550, 1162 PT_SUNW_UNWIND = 0x6464e550, 1163 1164 PT_GNU_STACK = 0x6474e551, // Indicates stack executability. 1165 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation. 1166 1167 // ARM program header types. 1168 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility information 1169 // These all contain stack unwind tables. 1170 PT_ARM_EXIDX = 0x70000001, 1171 PT_ARM_UNWIND = 0x70000001 1172}; 1173 1174// Segment flag bits. 1175enum { 1176 PF_X = 1, // Execute 1177 PF_W = 2, // Write 1178 PF_R = 4, // Read 1179 PF_MASKOS = 0x0ff00000,// Bits for operating system-specific semantics. 1180 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. 1181}; 1182 1183// Dynamic table entry for ELF32. 1184struct Elf32_Dyn 1185{ 1186 Elf32_Sword d_tag; // Type of dynamic table entry. 1187 union 1188 { 1189 Elf32_Word d_val; // Integer value of entry. 1190 Elf32_Addr d_ptr; // Pointer value of entry. 1191 } d_un; 1192}; 1193 1194// Dynamic table entry for ELF64. 1195struct Elf64_Dyn 1196{ 1197 Elf64_Sxword d_tag; // Type of dynamic table entry. 1198 union 1199 { 1200 Elf64_Xword d_val; // Integer value of entry. 1201 Elf64_Addr d_ptr; // Pointer value of entry. 1202 } d_un; 1203}; 1204 1205// Dynamic table entry tags. 1206enum { 1207 DT_NULL = 0, // Marks end of dynamic array. 1208 DT_NEEDED = 1, // String table offset of needed library. 1209 DT_PLTRELSZ = 2, // Size of relocation entries in PLT. 1210 DT_PLTGOT = 3, // Address associated with linkage table. 1211 DT_HASH = 4, // Address of symbolic hash table. 1212 DT_STRTAB = 5, // Address of dynamic string table. 1213 DT_SYMTAB = 6, // Address of dynamic symbol table. 1214 DT_RELA = 7, // Address of relocation table (Rela entries). 1215 DT_RELASZ = 8, // Size of Rela relocation table. 1216 DT_RELAENT = 9, // Size of a Rela relocation entry. 1217 DT_STRSZ = 10, // Total size of the string table. 1218 DT_SYMENT = 11, // Size of a symbol table entry. 1219 DT_INIT = 12, // Address of initialization function. 1220 DT_FINI = 13, // Address of termination function. 1221 DT_SONAME = 14, // String table offset of a shared objects name. 1222 DT_RPATH = 15, // String table offset of library search path. 1223 DT_SYMBOLIC = 16, // Changes symbol resolution algorithm. 1224 DT_REL = 17, // Address of relocation table (Rel entries). 1225 DT_RELSZ = 18, // Size of Rel relocation table. 1226 DT_RELENT = 19, // Size of a Rel relocation entry. 1227 DT_PLTREL = 20, // Type of relocation entry used for linking. 1228 DT_DEBUG = 21, // Reserved for debugger. 1229 DT_TEXTREL = 22, // Relocations exist for non-writable segments. 1230 DT_JMPREL = 23, // Address of relocations associated with PLT. 1231 DT_BIND_NOW = 24, // Process all relocations before execution. 1232 DT_INIT_ARRAY = 25, // Pointer to array of initialization functions. 1233 DT_FINI_ARRAY = 26, // Pointer to array of termination functions. 1234 DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY. 1235 DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY. 1236 DT_RUNPATH = 29, // String table offset of lib search path. 1237 DT_FLAGS = 30, // Flags. 1238 DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules 1239 // for the interpretation of the d_un union. 1240 1241 DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions. 1242 DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array. 1243 1244 DT_LOOS = 0x60000000, // Start of environment specific tags. 1245 DT_HIOS = 0x6FFFFFFF, // End of environment specific tags. 1246 DT_LOPROC = 0x70000000, // Start of processor specific tags. 1247 DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags. 1248 1249 DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count. 1250 DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count. 1251 1252 DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1. 1253 DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table. 1254 DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF. 1255 DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table. 1256 DT_VERNEEDNUM = 0X6FFFFFFF // The number of entries in DT_VERNEED. 1257}; 1258 1259// DT_FLAGS values. 1260enum { 1261 DF_ORIGIN = 0x01, // The object may reference $ORIGIN. 1262 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe. 1263 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment. 1264 DF_BIND_NOW = 0x08, // Process all relocations on load. 1265 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. 1266}; 1267 1268// State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry. 1269enum { 1270 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object. 1271 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object. 1272 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object. 1273 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object. 1274 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime. 1275 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object. 1276 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object. 1277 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled. 1278 DF_1_DIRECT = 0x00000100, // Direct binding enabled. 1279 DF_1_TRANS = 0x00000200, 1280 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose. 1281 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path. 1282 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed. 1283 DF_1_CONFALT = 0x00002000, // Configuration alternative created. 1284 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search. 1285 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time. 1286 DF_1_DISPRELPND = 0x00010000 // Disp reloc applied at run-time. 1287}; 1288 1289// ElfXX_VerDef structure version (GNU versioning) 1290enum { 1291 VER_DEF_NONE = 0, 1292 VER_DEF_CURRENT = 1 1293}; 1294 1295// VerDef Flags (ElfXX_VerDef::vd_flags) 1296enum { 1297 VER_FLG_BASE = 0x1, 1298 VER_FLG_WEAK = 0x2, 1299 VER_FLG_INFO = 0x4 1300}; 1301 1302// Special constants for the version table. (SHT_GNU_versym/.gnu.version) 1303enum { 1304 VER_NDX_LOCAL = 0, // Unversioned local symbol 1305 VER_NDX_GLOBAL = 1, // Unversioned global symbol 1306 VERSYM_VERSION = 0x7fff, // Version Index mask 1307 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) 1308}; 1309 1310// ElfXX_VerNeed structure version (GNU versioning) 1311enum { 1312 VER_NEED_NONE = 0, 1313 VER_NEED_CURRENT = 1 1314}; 1315 1316} // end namespace ELF 1317 1318} // end namespace llvm 1319 1320#endif 1321