ELF.h revision fc61a23506fdad8f38e3437d741a4108339abcfe
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 uint16_t Elf32_Half; 32typedef uint32_t Elf32_Off; // File offset 33typedef int32_t Elf32_Sword; 34typedef uint32_t Elf32_Word; 35 36typedef uint64_t Elf64_Addr; 37typedef uint64_t Elf64_Off; 38typedef int32_t Elf64_Shalf; 39typedef int32_t Elf64_Sword; 40typedef uint32_t Elf64_Word; 41typedef int64_t Elf64_Sxword; 42typedef uint64_t Elf64_Xword; 43typedef uint32_t Elf64_Half; 44typedef uint16_t Elf64_Quarter; 45 46// Object file magic string. 47static const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' }; 48 49// e_ident size and indices. 50enum { 51 EI_MAG0 = 0, // File identification index. 52 EI_MAG1 = 1, // File identification index. 53 EI_MAG2 = 2, // File identification index. 54 EI_MAG3 = 3, // File identification index. 55 EI_CLASS = 4, // File class. 56 EI_DATA = 5, // Data encoding. 57 EI_VERSION = 6, // File version. 58 EI_OSABI = 7, // OS/ABI identification. 59 EI_ABIVERSION = 8, // ABI version. 60 EI_PAD = 9, // Start of padding bytes. 61 EI_NIDENT = 16 // Number of bytes in e_ident. 62}; 63 64struct Elf32_Ehdr { 65 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 66 Elf32_Half e_type; // Type of file (see ET_* below) 67 Elf32_Half e_machine; // Required architecture for this file (see EM_*) 68 Elf32_Word e_version; // Must be equal to 1 69 Elf32_Addr e_entry; // Address to jump to in order to start program 70 Elf32_Off e_phoff; // Program header table's file offset, in bytes 71 Elf32_Off e_shoff; // Section header table's file offset, in bytes 72 Elf32_Word e_flags; // Processor-specific flags 73 Elf32_Half e_ehsize; // Size of ELF header, in bytes 74 Elf32_Half e_phentsize; // Size of an entry in the program header table 75 Elf32_Half e_phnum; // Number of entries in the program header table 76 Elf32_Half e_shentsize; // Size of an entry in the section header table 77 Elf32_Half e_shnum; // Number of entries in the section header table 78 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 79 bool checkMagic() const { 80 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 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). 88struct Elf64_Ehdr { 89 unsigned char e_ident[EI_NIDENT]; 90 Elf64_Quarter e_type; 91 Elf64_Quarter e_machine; 92 Elf64_Half e_version; 93 Elf64_Addr e_entry; 94 Elf64_Off e_phoff; 95 Elf64_Off e_shoff; 96 Elf64_Half e_flags; 97 Elf64_Quarter e_ehsize; 98 Elf64_Quarter e_phentsize; 99 Elf64_Quarter e_phnum; 100 Elf64_Quarter e_shentsize; 101 Elf64_Quarter e_shnum; 102 Elf64_Quarter e_shstrndx; 103 bool checkMagic() const { 104 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 105 } 106 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 107 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 108}; 109 110// File types 111enum { 112 ET_NONE = 0, // No file type 113 ET_REL = 1, // Relocatable file 114 ET_EXEC = 2, // Executable file 115 ET_DYN = 3, // Shared object file 116 ET_CORE = 4, // Core file 117 ET_LOPROC = 0xff00, // Beginning of processor-specific codes 118 ET_HIPROC = 0xffff // Processor-specific 119}; 120 121// Versioning 122enum { 123 EV_NONE = 0, 124 EV_CURRENT = 1 125}; 126 127// Machine architectures 128enum { 129 EM_NONE = 0, // No machine 130 EM_M32 = 1, // AT&T WE 32100 131 EM_SPARC = 2, // SPARC 132 EM_386 = 3, // Intel 386 133 EM_68K = 4, // Motorola 68000 134 EM_88K = 5, // Motorola 88000 135 EM_486 = 6, // Intel 486 (deprecated) 136 EM_860 = 7, // Intel 80860 137 EM_MIPS = 8, // MIPS R3000 138 EM_S370 = 9, // IBM System/370 139 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian 140 EM_PARISC = 15, // Hewlett-Packard PA-RISC 141 EM_VPP500 = 17, // Fujitsu VPP500 142 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC 143 EM_960 = 19, // Intel 80960 144 EM_PPC = 20, // PowerPC 145 EM_PPC64 = 21, // PowerPC64 146 EM_S390 = 22, // IBM System/390 147 EM_SPU = 23, // IBM SPU/SPC 148 EM_V800 = 36, // NEC V800 149 EM_FR20 = 37, // Fujitsu FR20 150 EM_RH32 = 38, // TRW RH-32 151 EM_RCE = 39, // Motorola RCE 152 EM_ARM = 40, // ARM 153 EM_ALPHA = 41, // DEC Alpha 154 EM_SH = 42, // Hitachi SH 155 EM_SPARCV9 = 43, // SPARC V9 156 EM_TRICORE = 44, // Siemens TriCore 157 EM_ARC = 45, // Argonaut RISC Core 158 EM_H8_300 = 46, // Hitachi H8/300 159 EM_H8_300H = 47, // Hitachi H8/300H 160 EM_H8S = 48, // Hitachi H8S 161 EM_H8_500 = 49, // Hitachi H8/500 162 EM_IA_64 = 50, // Intel IA-64 processor architecture 163 EM_MIPS_X = 51, // Stanford MIPS-X 164 EM_COLDFIRE = 52, // Motorola ColdFire 165 EM_68HC12 = 53, // Motorola M68HC12 166 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator 167 EM_PCP = 55, // Siemens PCP 168 EM_NCPU = 56, // Sony nCPU embedded RISC processor 169 EM_NDR1 = 57, // Denso NDR1 microprocessor 170 EM_STARCORE = 58, // Motorola Star*Core processor 171 EM_ME16 = 59, // Toyota ME16 processor 172 EM_ST100 = 60, // STMicroelectronics ST100 processor 173 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family 174 EM_X86_64 = 62, // AMD x86-64 architecture 175 EM_PDSP = 63, // Sony DSP Processor 176 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 177 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 178 EM_FX66 = 66, // Siemens FX66 microcontroller 179 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller 180 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller 181 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller 182 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller 183 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller 184 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller 185 EM_SVX = 73, // Silicon Graphics SVx 186 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller 187 EM_VAX = 75, // Digital VAX 188 EM_CRIS = 76, // Axis Communications 32-bit embedded processor 189 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor 190 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor 191 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor 192 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor 193 EM_HUANY = 81, // Harvard University machine-independent object files 194 EM_PRISM = 82, // SiTera Prism 195 EM_AVR = 83, // Atmel AVR 8-bit microcontroller 196 EM_FR30 = 84, // Fujitsu FR30 197 EM_D10V = 85, // Mitsubishi D10V 198 EM_D30V = 86, // Mitsubishi D30V 199 EM_V850 = 87, // NEC v850 200 EM_M32R = 88, // Mitsubishi M32R 201 EM_MN10300 = 89, // Matsushita MN10300 202 EM_MN10200 = 90, // Matsushita MN10200 203 EM_PJ = 91, // picoJava 204 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor 205 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old 206 // spelling/synonym: EM_ARC_A5) 207 EM_XTENSA = 94, // Tensilica Xtensa Architecture 208 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor 209 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor 210 EM_NS32K = 97, // National Semiconductor 32000 series 211 EM_TPC = 98, // Tenor Network TPC processor 212 EM_SNP1K = 99, // Trebia SNP 1000 processor 213 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 214 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family 215 EM_MAX = 102, // MAX Processor 216 EM_CR = 103, // National Semiconductor CompactRISC microprocessor 217 EM_F2MC16 = 104, // Fujitsu F2MC16 218 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 219 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor 220 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors 221 EM_SEP = 108, // Sharp embedded microprocessor 222 EM_ARCA = 109, // Arca RISC Microprocessor 223 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC 224 // of Peking University 225 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU 226 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor 227 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor 228 EM_CRX = 114, // National Semiconductor CompactRISC CRX 229 EM_XGATE = 115, // Motorola XGATE embedded processor 230 EM_C166 = 116, // Infineon C16x/XC16x processor 231 EM_M16C = 117, // Renesas M16C series microprocessors 232 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal 233 // Controller 234 EM_CE = 119, // Freescale Communication Engine RISC core 235 EM_M32C = 120, // Renesas M32C series microprocessors 236 EM_TSK3000 = 131, // Altium TSK3000 core 237 EM_RS08 = 132, // Freescale RS08 embedded processor 238 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP 239 // processors 240 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor 241 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor 242 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor 243 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor 244 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture 245 EM_SE_C17 = 139, // Seiko Epson C17 family 246 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family 247 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family 248 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family 249 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor 250 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor 251 EM_R32C = 162, // Renesas R32C series microprocessors 252 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family 253 EM_QDSP6 = 164, // QUALCOMM DSP6 Processor 254 EM_8051 = 165, // Intel 8051 and variants 255 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable 256 // and extensible RISC processors 257 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC 258 // processor family 259 EM_ECOG1 = 168, // Cyan Technology eCOG1X family 260 EM_ECOG1X = 168, // Cyan Technology eCOG1X family 261 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers 262 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor 263 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor 264 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture 265 EM_RX = 173, // Renesas RX family 266 EM_METAG = 174, // Imagination Technologies META processor 267 // architecture 268 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture 269 EM_ECOG16 = 176, // Cyan Technology eCOG16 family 270 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit 271 // microprocessor 272 EM_ETPU = 178, // Freescale Extended Time Processing Unit 273 EM_SLE9X = 179, // Infineon Technologies SLE9X core 274 EM_L10M = 180, // Intel L10M 275 EM_K10M = 181, // Intel K10M 276 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family 277 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller 278 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family 279 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family 280 EM_MICROBLAZE = 189, // Xilinx MicroBlaze 32-bit RISC soft processor core 281 EM_CUDA = 190, // NVIDIA CUDA architecture 282 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family 283 EM_CLOUDSHIELD = 192, // CloudShield architecture family 284 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family 285 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family 286 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 287 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core 288 EM_RL78 = 197, // Renesas RL78 family 289 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor 290 EM_78KOR = 199, // Renesas 78KOR family 291 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) 292 EM_MBLAZE = 47787 // Xilinx MicroBlaze 293}; 294 295// Object file classes. 296enum { 297 ELFCLASSNONE = 0, 298 ELFCLASS32 = 1, // 32-bit object file 299 ELFCLASS64 = 2 // 64-bit object file 300}; 301 302// Object file byte orderings. 303enum { 304 ELFDATANONE = 0, // Invalid data encoding. 305 ELFDATA2LSB = 1, // Little-endian object file 306 ELFDATA2MSB = 2 // Big-endian object file 307}; 308 309// OS ABI identification. 310enum { 311 ELFOSABI_NONE = 0, // UNIX System V ABI 312 ELFOSABI_HPUX = 1, // HP-UX operating system 313 ELFOSABI_NETBSD = 2, // NetBSD 314 ELFOSABI_LINUX = 3, // GNU/Linux 315 ELFOSABI_HURD = 4, // GNU/Hurd 316 ELFOSABI_SOLARIS = 6, // Solaris 317 ELFOSABI_AIX = 7, // AIX 318 ELFOSABI_IRIX = 8, // IRIX 319 ELFOSABI_FREEBSD = 9, // FreeBSD 320 ELFOSABI_TRU64 = 10, // TRU64 UNIX 321 ELFOSABI_MODESTO = 11, // Novell Modesto 322 ELFOSABI_OPENBSD = 12, // OpenBSD 323 ELFOSABI_OPENVMS = 13, // OpenVMS 324 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 325 ELFOSABI_AROS = 15, // AROS 326 ELFOSABI_FENIXOS = 16, // FenixOS 327 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 328 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 329 ELFOSABI_ARM = 97, // ARM 330 ELFOSABI_STANDALONE = 255 // Standalone (embedded) application 331}; 332 333// X86_64 relocations. 334enum { 335 R_X86_64_NONE = 0, 336 R_X86_64_64 = 1, 337 R_X86_64_PC32 = 2, 338 R_X86_64_GOT32 = 3, 339 R_X86_64_PLT32 = 4, 340 R_X86_64_COPY = 5, 341 R_X86_64_GLOB_DAT = 6, 342 R_X86_64_JUMP_SLOT = 7, 343 R_X86_64_RELATIVE = 8, 344 R_X86_64_GOTPCREL = 9, 345 R_X86_64_32 = 10, 346 R_X86_64_32S = 11, 347 R_X86_64_16 = 12, 348 R_X86_64_PC16 = 13, 349 R_X86_64_8 = 14, 350 R_X86_64_PC8 = 15, 351 R_X86_64_DTPMOD64 = 16, 352 R_X86_64_DTPOFF64 = 17, 353 R_X86_64_TPOFF64 = 18, 354 R_X86_64_TLSGD = 19, 355 R_X86_64_TLSLD = 20, 356 R_X86_64_DTPOFF32 = 21, 357 R_X86_64_GOTTPOFF = 22, 358 R_X86_64_TPOFF32 = 23, 359 R_X86_64_PC64 = 24, 360 R_X86_64_GOTOFF64 = 25, 361 R_X86_64_GOTPC32 = 26, 362 R_X86_64_GOT64 = 27, 363 R_X86_64_GOTPCREL64 = 28, 364 R_X86_64_GOTPC64 = 29, 365 R_X86_64_GOTPLT64 = 30, 366 R_X86_64_PLTOFF64 = 31, 367 R_X86_64_SIZE32 = 32, 368 R_X86_64_SIZE64 = 33, 369 R_X86_64_GOTPC32_TLSDESC = 34, 370 R_X86_64_TLSDESC_CALL = 35, 371 R_X86_64_TLSDESC = 36 372}; 373 374// i386 relocations. 375// TODO: this is just a subset 376enum { 377 R_386_NONE = 0, 378 R_386_32 = 1, 379 R_386_PC32 = 2, 380 R_386_GOT32 = 3, 381 R_386_PLT32 = 4, 382 R_386_COPY = 5, 383 R_386_GLOB_DAT = 6, 384 R_386_JUMP_SLOT = 7, 385 R_386_RELATIVE = 8, 386 R_386_GOTOFF = 9, 387 R_386_GOTPC = 10, 388 R_386_32PLT = 11, 389 R_386_TLS_TPOFF = 14, 390 R_386_TLS_IE = 15, 391 R_386_TLS_GOTIE = 16, 392 R_386_TLS_LE = 17, 393 R_386_TLS_GD = 18, 394 R_386_TLS_LDM = 19, 395 R_386_16 = 20, 396 R_386_PC16 = 21, 397 R_386_8 = 22, 398 R_386_PC8 = 23, 399 R_386_TLS_GD_32 = 24, 400 R_386_TLS_GD_PUSH = 25, 401 R_386_TLS_GD_CALL = 26, 402 R_386_TLS_GD_POP = 27, 403 R_386_TLS_LDM_32 = 28, 404 R_386_TLS_LDM_PUSH = 29, 405 R_386_TLS_LDM_CALL = 30, 406 R_386_TLS_LDM_POP = 31, 407 R_386_TLS_LDO_32 = 32, 408 R_386_TLS_IE_32 = 33, 409 R_386_TLS_LE_32 = 34, 410 R_386_TLS_DTPMOD32 = 35, 411 R_386_TLS_DTPOFF32 = 36, 412 R_386_TLS_TPOFF32 = 37, 413 R_386_TLS_GOTDESC = 39, 414 R_386_TLS_DESC_CALL = 40, 415 R_386_TLS_DESC = 41, 416 R_386_IRELATIVE = 42, 417 R_386_NUM = 43 418}; 419 420// MBlaze relocations. 421enum { 422 R_MICROBLAZE_NONE = 0, 423 R_MICROBLAZE_32 = 1, 424 R_MICROBLAZE_32_PCREL = 2, 425 R_MICROBLAZE_64_PCREL = 3, 426 R_MICROBLAZE_32_PCREL_LO = 4, 427 R_MICROBLAZE_64 = 5, 428 R_MICROBLAZE_32_LO = 6, 429 R_MICROBLAZE_SRO32 = 7, 430 R_MICROBLAZE_SRW32 = 8, 431 R_MICROBLAZE_64_NONE = 9, 432 R_MICROBLAZE_32_SYM_OP_SYM = 10, 433 R_MICROBLAZE_GNU_VTINHERIT = 11, 434 R_MICROBLAZE_GNU_VTENTRY = 12, 435 R_MICROBLAZE_GOTPC_64 = 13, 436 R_MICROBLAZE_GOT_64 = 14, 437 R_MICROBLAZE_PLT_64 = 15, 438 R_MICROBLAZE_REL = 16, 439 R_MICROBLAZE_JUMP_SLOT = 17, 440 R_MICROBLAZE_GLOB_DAT = 18, 441 R_MICROBLAZE_GOTOFF_64 = 19, 442 R_MICROBLAZE_GOTOFF_32 = 20, 443 R_MICROBLAZE_COPY = 21 444}; 445 446enum { 447 R_PPC_NONE = 0, /* No relocation. */ 448 R_PPC_ADDR32 = 1, 449 R_PPC_ADDR24 = 2, 450 R_PPC_ADDR16 = 3, 451 R_PPC_ADDR16_LO = 4, 452 R_PPC_ADDR16_HI = 5, 453 R_PPC_ADDR16_HA = 6, 454 R_PPC_ADDR14 = 7, 455 R_PPC_ADDR14_BRTAKEN = 8, 456 R_PPC_ADDR14_BRNTAKEN = 9, 457 R_PPC_REL24 = 10, 458 R_PPC_REL14 = 11, 459 R_PPC_REL14_BRTAKEN = 12, 460 R_PPC_REL14_BRNTAKEN = 13, 461 R_PPC_REL32 = 26 462}; 463 464// ARM Specific e_flags 465enum { EF_ARM_EABIMASK = 0xFF000000U }; 466 467// ELF Relocation types for ARM 468// Meets 2.08 ABI Specs. 469 470enum { 471 R_ARM_NONE = 0x00, 472 R_ARM_PC24 = 0x01, 473 R_ARM_ABS32 = 0x02, 474 R_ARM_REL32 = 0x03, 475 R_ARM_LDR_PC_G0 = 0x04, 476 R_ARM_ABS16 = 0x05, 477 R_ARM_ABS12 = 0x06, 478 R_ARM_THM_ABS5 = 0x07, 479 R_ARM_ABS8 = 0x08, 480 R_ARM_SBREL32 = 0x09, 481 R_ARM_THM_CALL = 0x0a, 482 R_ARM_THM_PC8 = 0x0b, 483 R_ARM_BREL_ADJ = 0x0c, 484 R_ARM_TLS_DESC = 0x0d, 485 R_ARM_THM_SWI8 = 0x0e, 486 R_ARM_XPC25 = 0x0f, 487 R_ARM_THM_XPC22 = 0x10, 488 R_ARM_TLS_DTPMOD32 = 0x11, 489 R_ARM_TLS_DTPOFF32 = 0x12, 490 R_ARM_TLS_TPOFF32 = 0x13, 491 R_ARM_COPY = 0x14, 492 R_ARM_GLOB_DAT = 0x15, 493 R_ARM_JUMP_SLOT = 0x16, 494 R_ARM_RELATIVE = 0x17, 495 R_ARM_GOTOFF32 = 0x18, 496 R_ARM_BASE_PREL = 0x19, 497 R_ARM_GOT_BREL = 0x1a, 498 R_ARM_PLT32 = 0x1b, 499 R_ARM_CALL = 0x1c, 500 R_ARM_JUMP24 = 0x1d, 501 R_ARM_THM_JUMP24 = 0x1e, 502 R_ARM_BASE_ABS = 0x1f, 503 R_ARM_ALU_PCREL_7_0 = 0x20, 504 R_ARM_ALU_PCREL_15_8 = 0x21, 505 R_ARM_ALU_PCREL_23_15 = 0x22, 506 R_ARM_LDR_SBREL_11_0_NC = 0x23, 507 R_ARM_ALU_SBREL_19_12_NC = 0x24, 508 R_ARM_ALU_SBREL_27_20_CK = 0x25, 509 R_ARM_TARGET1 = 0x26, 510 R_ARM_SBREL31 = 0x27, 511 R_ARM_V4BX = 0x28, 512 R_ARM_TARGET2 = 0x29, 513 R_ARM_PREL31 = 0x2a, 514 R_ARM_MOVW_ABS_NC = 0x2b, 515 R_ARM_MOVT_ABS = 0x2c, 516 R_ARM_MOVW_PREL_NC = 0x2d, 517 R_ARM_MOVT_PREL = 0x2e, 518 R_ARM_THM_MOVW_ABS_NC = 0x2f, 519 R_ARM_THM_MOVT_ABS = 0x30, 520 R_ARM_THM_MOVW_PREL_NC = 0x31, 521 R_ARM_THM_MOVT_PREL = 0x32, 522 R_ARM_THM_JUMP19 = 0x33, 523 R_ARM_THM_JUMP6 = 0x34, 524 R_ARM_THM_ALU_PREL_11_0 = 0x35, 525 R_ARM_THM_PC12 = 0x36, 526 R_ARM_ABS32_NOI = 0x37, 527 R_ARM_REL32_NOI = 0x38, 528 R_ARM_ALU_PC_G0_NC = 0x39, 529 R_ARM_ALU_PC_G0 = 0x3a, 530 R_ARM_ALU_PC_G1_NC = 0x3b, 531 R_ARM_ALU_PC_G1 = 0x3c, 532 R_ARM_ALU_PC_G2 = 0x3d, 533 R_ARM_LDR_PC_G1 = 0x3e, 534 R_ARM_LDR_PC_G2 = 0x3f, 535 R_ARM_LDRS_PC_G0 = 0x40, 536 R_ARM_LDRS_PC_G1 = 0x41, 537 R_ARM_LDRS_PC_G2 = 0x42, 538 R_ARM_LDC_PC_G0 = 0x43, 539 R_ARM_LDC_PC_G1 = 0x44, 540 R_ARM_LDC_PC_G2 = 0x45, 541 R_ARM_ALU_SB_G0_NC = 0x46, 542 R_ARM_ALU_SB_G0 = 0x47, 543 R_ARM_ALU_SB_G1_NC = 0x48, 544 R_ARM_ALU_SB_G1 = 0x49, 545 R_ARM_ALU_SB_G2 = 0x4a, 546 R_ARM_LDR_SB_G0 = 0x4b, 547 R_ARM_LDR_SB_G1 = 0x4c, 548 R_ARM_LDR_SB_G2 = 0x4d, 549 R_ARM_LDRS_SB_G0 = 0x4e, 550 R_ARM_LDRS_SB_G1 = 0x4f, 551 R_ARM_LDRS_SB_G2 = 0x50, 552 R_ARM_LDC_SB_G0 = 0x51, 553 R_ARM_LDC_SB_G1 = 0x52, 554 R_ARM_LDC_SB_G2 = 0x53, 555 R_ARM_MOVW_BREL_NC = 0x54, 556 R_ARM_MOVT_BREL = 0x55, 557 R_ARM_MOVW_BREL = 0x56, 558 R_ARM_THM_MOVW_BREL_NC = 0x57, 559 R_ARM_THM_MOVT_BREL = 0x58, 560 R_ARM_THM_MOVW_BREL = 0x59, 561 R_ARM_TLS_GOTDESC = 0x5a, 562 R_ARM_TLS_CALL = 0x5b, 563 R_ARM_TLS_DESCSEQ = 0x5c, 564 R_ARM_THM_TLS_CALL = 0x5d, 565 R_ARM_PLT32_ABS = 0x5e, 566 R_ARM_GOT_ABS = 0x5f, 567 R_ARM_GOT_PREL = 0x60, 568 R_ARM_GOT_BREL12 = 0x61, 569 R_ARM_GOTOFF12 = 0x62, 570 R_ARM_GOTRELAX = 0x63, 571 R_ARM_GNU_VTENTRY = 0x64, 572 R_ARM_GNU_VTINHERIT = 0x65, 573 R_ARM_THM_JUMP11 = 0x66, 574 R_ARM_THM_JUMP8 = 0x67, 575 R_ARM_TLS_GD32 = 0x68, 576 R_ARM_TLS_LDM32 = 0x69, 577 R_ARM_TLS_LDO32 = 0x6a, 578 R_ARM_TLS_IE32 = 0x6b, 579 R_ARM_TLS_LE32 = 0x6c, 580 R_ARM_TLS_LDO12 = 0x6d, 581 R_ARM_TLS_LE12 = 0x6e, 582 R_ARM_TLS_IE12GP = 0x6f, 583 R_ARM_PRIVATE_0 = 0x70, 584 R_ARM_PRIVATE_1 = 0x71, 585 R_ARM_PRIVATE_2 = 0x72, 586 R_ARM_PRIVATE_3 = 0x73, 587 R_ARM_PRIVATE_4 = 0x74, 588 R_ARM_PRIVATE_5 = 0x75, 589 R_ARM_PRIVATE_6 = 0x76, 590 R_ARM_PRIVATE_7 = 0x77, 591 R_ARM_PRIVATE_8 = 0x78, 592 R_ARM_PRIVATE_9 = 0x79, 593 R_ARM_PRIVATE_10 = 0x7a, 594 R_ARM_PRIVATE_11 = 0x7b, 595 R_ARM_PRIVATE_12 = 0x7c, 596 R_ARM_PRIVATE_13 = 0x7d, 597 R_ARM_PRIVATE_14 = 0x7e, 598 R_ARM_PRIVATE_15 = 0x7f, 599 R_ARM_ME_TOO = 0x80, 600 R_ARM_THM_TLS_DESCSEQ16 = 0x81, 601 R_ARM_THM_TLS_DESCSEQ32 = 0x82 602}; 603 604 605 606// Section header. 607struct Elf32_Shdr { 608 Elf32_Word sh_name; // Section name (index into string table) 609 Elf32_Word sh_type; // Section type (SHT_*) 610 Elf32_Word sh_flags; // Section flags (SHF_*) 611 Elf32_Addr sh_addr; // Address where section is to be loaded 612 Elf32_Off sh_offset; // File offset of section data, in bytes 613 Elf32_Word sh_size; // Size of section, in bytes 614 Elf32_Word sh_link; // Section type-specific header table index link 615 Elf32_Word sh_info; // Section type-specific extra information 616 Elf32_Word sh_addralign; // Section address alignment 617 Elf32_Word sh_entsize; // Size of records contained within the section 618}; 619 620// Section header for ELF64 - same fields as ELF32, different types. 621struct Elf64_Shdr { 622 Elf64_Half sh_name; 623 Elf64_Half sh_type; 624 Elf64_Xword sh_flags; 625 Elf64_Addr sh_addr; 626 Elf64_Off sh_offset; 627 Elf64_Xword sh_size; 628 Elf64_Half sh_link; 629 Elf64_Half sh_info; 630 Elf64_Xword sh_addralign; 631 Elf64_Xword sh_entsize; 632}; 633 634// Special section indices. 635enum { 636 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 637 SHN_LORESERVE = 0xff00, // Lowest reserved index 638 SHN_LOPROC = 0xff00, // Lowest processor-specific index 639 SHN_HIPROC = 0xff1f, // Highest processor-specific index 640 SHN_LOOS = 0xff20, // Lowest operating system-specific index 641 SHN_HIOS = 0xff3f, // Highest operating system-specific index 642 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 643 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 644 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 645 SHN_HIRESERVE = 0xffff // Highest reserved index 646}; 647 648// Section types. 649enum { 650 SHT_NULL = 0, // No associated section (inactive entry). 651 SHT_PROGBITS = 1, // Program-defined contents. 652 SHT_SYMTAB = 2, // Symbol table. 653 SHT_STRTAB = 3, // String table. 654 SHT_RELA = 4, // Relocation entries; explicit addends. 655 SHT_HASH = 5, // Symbol hash table. 656 SHT_DYNAMIC = 6, // Information for dynamic linking. 657 SHT_NOTE = 7, // Information about the file. 658 SHT_NOBITS = 8, // Data occupies no space in the file. 659 SHT_REL = 9, // Relocation entries; no explicit addends. 660 SHT_SHLIB = 10, // Reserved. 661 SHT_DYNSYM = 11, // Symbol table. 662 SHT_INIT_ARRAY = 14, // Pointers to initialization functions. 663 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 664 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 665 SHT_GROUP = 17, // Section group. 666 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. 667 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 668 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 669 SHT_LOPROC = 0x70000000, // Lowest processor architecture-specific type. 670 // Fixme: All this is duplicated in MCSectionELF. Why?? 671 // Exception Index table 672 SHT_ARM_EXIDX = 0x70000001U, 673 // BPABI DLL dynamic linking pre-emption map 674 SHT_ARM_PREEMPTMAP = 0x70000002U, 675 // Object file compatibility attributes 676 SHT_ARM_ATTRIBUTES = 0x70000003U, 677 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 678 SHT_ARM_OVERLAYSECTION = 0x70000005U, 679 680 SHT_X86_64_UNWIND = 0x70000001, // Unwind information 681 682 SHT_HIPROC = 0x7fffffff, // Highest processor architecture-specific type. 683 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 684 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 685}; 686 687// Section flags. 688enum { 689 // Section data should be writable during execution. 690 SHF_WRITE = 0x1, 691 692 // Section occupies memory during program execution. 693 SHF_ALLOC = 0x2, 694 695 // Section contains executable machine instructions. 696 SHF_EXECINSTR = 0x4, 697 698 // The data in this section may be merged. 699 SHF_MERGE = 0x10, 700 701 // The data in this section is null-terminated strings. 702 SHF_STRINGS = 0x20, 703 704 // A field in this section holds a section header table index. 705 SHF_INFO_LINK = 0x40U, 706 707 // Adds special ordering requirements for link editors. 708 SHF_LINK_ORDER = 0x80U, 709 710 // This section requires special OS-specific processing to avoid incorrect 711 // behavior. 712 SHF_OS_NONCONFORMING = 0x100U, 713 714 // This section is a member of a section group. 715 SHF_GROUP = 0x200U, 716 717 // This section holds Thread-Local Storage. 718 SHF_TLS = 0x400U, 719 720 // Start of target-specific flags. 721 722 /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped 723 /// together by the linker to form the constant pool and the cp register is 724 /// set to the start of the constant pool by the boot code. 725 XCORE_SHF_CP_SECTION = 0x800U, 726 727 /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped 728 /// together by the linker to form the data section and the dp register is 729 /// set to the start of the section by the boot code. 730 XCORE_SHF_DP_SECTION = 0x1000U, 731 732 SHF_MASKOS = 0x0ff00000, 733 734 // Bits indicating processor-specific flags. 735 SHF_MASKPROC = 0xf0000000, 736 737 // If an object file section does not have this flag set, then it may not hold 738 // more than 2GB and can be freely referred to in objects using smaller code 739 // models. Otherwise, only objects using larger code models can refer to them. 740 // For example, a medium code model object can refer to data in a section that 741 // sets this flag besides being able to refer to data in a section that does 742 // not set it; likewise, a small code model object can refer only to code in a 743 // section that does not set this flag. 744 SHF_X86_64_LARGE = 0x10000000 745}; 746 747// Section Group Flags 748enum { 749 GRP_COMDAT = 0x1, 750 GRP_MASKOS = 0x0ff00000, 751 GRP_MASKPROC = 0xf0000000 752}; 753 754// Symbol table entries for ELF32. 755struct Elf32_Sym { 756 Elf32_Word st_name; // Symbol name (index into string table) 757 Elf32_Addr st_value; // Value or address associated with the symbol 758 Elf32_Word st_size; // Size of the symbol 759 unsigned char st_info; // Symbol's type and binding attributes 760 unsigned char st_other; // Must be zero; reserved 761 Elf32_Half st_shndx; // Which section (header table index) it's defined in 762 763 // These accessors and mutators correspond to the ELF32_ST_BIND, 764 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 765 unsigned char getBinding() const { return st_info >> 4; } 766 unsigned char getType() const { return st_info & 0x0f; } 767 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 768 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 769 void setBindingAndType(unsigned char b, unsigned char t) { 770 st_info = (b << 4) + (t & 0x0f); 771 } 772}; 773 774// Symbol table entries for ELF64. 775struct Elf64_Sym { 776 Elf64_Word st_name; // Symbol name (index into string table) 777 unsigned char st_info; // Symbol's type and binding attributes 778 unsigned char st_other; // Must be zero; reserved 779 Elf64_Half st_shndx; // Which section (header table index) it's defined in 780 Elf64_Addr st_value; // Value or address associated with the symbol 781 Elf64_Xword st_size; // Size of the symbol 782 783 // These accessors and mutators are identical to those defined for ELF32 784 // symbol table entries. 785 unsigned char getBinding() const { return st_info >> 4; } 786 unsigned char getType() const { return st_info & 0x0f; } 787 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 788 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 789 void setBindingAndType(unsigned char b, unsigned char t) { 790 st_info = (b << 4) + (t & 0x0f); 791 } 792}; 793 794// The size (in bytes) of symbol table entries. 795enum { 796 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 797 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 798}; 799 800// Symbol bindings. 801enum { 802 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 803 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 804 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 805 STB_LOOS = 10, // Lowest operating system-specific binding type 806 STB_HIOS = 12, // Highest operating system-specific binding type 807 STB_LOPROC = 13, // Lowest processor-specific binding type 808 STB_HIPROC = 15 // Highest processor-specific binding type 809}; 810 811// Symbol types. 812enum { 813 STT_NOTYPE = 0, // Symbol's type is not specified 814 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 815 STT_FUNC = 2, // Symbol is executable code (function, etc.) 816 STT_SECTION = 3, // Symbol refers to a section 817 STT_FILE = 4, // Local, absolute symbol that refers to a file 818 STT_COMMON = 5, // An uninitialized common block 819 STT_TLS = 6, // Thread local data object 820 STT_LOOS = 7, // Lowest operating system-specific symbol type 821 STT_HIOS = 8, // Highest operating system-specific symbol type 822 STT_LOPROC = 13, // Lowest processor-specific symbol type 823 STT_HIPROC = 15 // Highest processor-specific symbol type 824}; 825 826enum { 827 STV_DEFAULT = 0, // Visibility is specified by binding type 828 STV_INTERNAL = 1, // Defined by processor supplements 829 STV_HIDDEN = 2, // Not visible to other components 830 STV_PROTECTED = 3 // Visible in other components but not preemptable 831}; 832 833// Relocation entry, without explicit addend. 834struct Elf32_Rel { 835 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 836 Elf32_Word r_info; // Symbol table index and type of relocation to apply 837 838 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 839 // and ELF32_R_INFO macros defined in the ELF specification: 840 Elf32_Word getSymbol() const { return (r_info >> 8); } 841 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 842 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 843 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 844 void setSymbolAndType(Elf32_Word s, unsigned char t) { 845 r_info = (s << 8) + t; 846 } 847}; 848 849// Relocation entry with explicit addend. 850struct Elf32_Rela { 851 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 852 Elf32_Word r_info; // Symbol table index and type of relocation to apply 853 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 854 855 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 856 // and ELF32_R_INFO macros defined in the ELF specification: 857 Elf32_Word getSymbol() const { return (r_info >> 8); } 858 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 859 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 860 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 861 void setSymbolAndType(Elf32_Word s, unsigned char t) { 862 r_info = (s << 8) + t; 863 } 864}; 865 866// Relocation entry, without explicit addend. 867struct Elf64_Rel { 868 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 869 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 870 871 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 872 // and ELF64_R_INFO macros defined in the ELF specification: 873 Elf64_Xword getSymbol() const { return (r_info >> 32); } 874 unsigned char getType() const { 875 return (unsigned char) (r_info & 0xffffffffL); 876 } 877 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 878 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 879 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 880 r_info = (s << 32) + (t&0xffffffffL); 881 } 882}; 883 884// Relocation entry with explicit addend. 885struct Elf64_Rela { 886 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 887 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 888 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 889 890 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 891 // and ELF64_R_INFO macros defined in the ELF specification: 892 Elf64_Xword getSymbol() const { return (r_info >> 32); } 893 unsigned char getType() const { 894 return (unsigned char) (r_info & 0xffffffffL); 895 } 896 void setSymbol(Elf64_Xword s) { setSymbolAndType(s, getType()); } 897 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 898 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 899 r_info = (s << 32) + (t&0xffffffffL); 900 } 901}; 902 903// Program header for ELF32. 904struct Elf32_Phdr { 905 Elf32_Word p_type; // Type of segment 906 Elf32_Off p_offset; // File offset where segment is located, in bytes 907 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 908 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 909 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 910 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 911 Elf32_Word p_flags; // Segment flags 912 Elf32_Word p_align; // Segment alignment constraint 913}; 914 915// Program header for ELF64. 916struct Elf64_Phdr { 917 Elf64_Word p_type; // Type of segment 918 Elf64_Word p_flags; // Segment flags 919 Elf64_Off p_offset; // File offset where segment is located, in bytes 920 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 921 Elf64_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 922 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 923 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 924 Elf64_Xword p_align; // Segment alignment constraint 925}; 926 927// Segment types. 928enum { 929 PT_NULL = 0, // Unused segment. 930 PT_LOAD = 1, // Loadable segment. 931 PT_DYNAMIC = 2, // Dynamic linking information. 932 PT_INTERP = 3, // Interpreter pathname. 933 PT_NOTE = 4, // Auxiliary information. 934 PT_SHLIB = 5, // Reserved. 935 PT_PHDR = 6, // The program header table itself. 936 PT_TLS = 7, // The thread-local storage template. 937 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. 938 939 // x86-64 program header types. 940 // These all contain stack unwind tables. 941 PT_GNU_EH_FRAME = 0x6474e550, 942 PT_SUNW_EH_FRAME = 0x6474e550, 943 PT_SUNW_UNWIND = 0x6464e550, 944 945 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. 946 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 947 PT_HIPROC = 0x7fffffff // Highest processor-specific program hdr entry type. 948}; 949 950// Segment flag bits. 951enum { 952 PF_X = 1, // Execute 953 PF_W = 2, // Write 954 PF_R = 4, // Read 955 PF_MASKOS = 0x0ff00000,// Bits for operating system-specific semantics. 956 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. 957}; 958 959// Dynamic table entry for ELF32. 960struct Elf32_Dyn 961{ 962 Elf32_Sword d_tag; // Type of dynamic table entry. 963 union 964 { 965 Elf32_Word d_val; // Integer value of entry. 966 Elf32_Addr d_ptr; // Pointer value of entry. 967 } d_un; 968}; 969 970// Dynamic table entry for ELF64. 971struct Elf64_Dyn 972{ 973 Elf64_Sxword d_tag; // Type of dynamic table entry. 974 union 975 { 976 Elf64_Xword d_val; // Integer value of entry. 977 Elf64_Addr d_ptr; // Pointer value of entry. 978 } d_un; 979}; 980 981// Dynamic table entry tags. 982enum { 983 DT_NULL = 0, // Marks end of dynamic array. 984 DT_NEEDED = 1, // String table offset of needed library. 985 DT_PLTRELSZ = 2, // Size of relocation entries in PLT. 986 DT_PLTGOT = 3, // Address associated with linkage table. 987 DT_HASH = 4, // Address of symbolic hash table. 988 DT_STRTAB = 5, // Address of dynamic string table. 989 DT_SYMTAB = 6, // Address of dynamic symbol table. 990 DT_RELA = 7, // Address of relocation table (Rela entries). 991 DT_RELASZ = 8, // Size of Rela relocation table. 992 DT_RELAENT = 9, // Size of a Rela relocation entry. 993 DT_STRSZ = 10, // Total size of the string table. 994 DT_SYMENT = 11, // Size of a symbol table entry. 995 DT_INIT = 12, // Address of initialization function. 996 DT_FINI = 13, // Address of termination function. 997 DT_SONAME = 14, // String table offset of a shared objects name. 998 DT_RPATH = 15, // String table offset of library search path. 999 DT_SYMBOLIC = 16, // Changes symbol resolution algorithm. 1000 DT_REL = 17, // Address of relocation table (Rel entries). 1001 DT_RELSZ = 18, // Size of Rel relocation table. 1002 DT_RELENT = 19, // Size of a Rel relocation entry. 1003 DT_PLTREL = 20, // Type of relocation entry used for linking. 1004 DT_DEBUG = 21, // Reserved for debugger. 1005 DT_TEXTREL = 22, // Relocations exist for non-writable segments. 1006 DT_JMPREL = 23, // Address of relocations associated with PLT. 1007 DT_BIND_NOW = 24, // Process all relocations before execution. 1008 DT_INIT_ARRAY = 25, // Pointer to array of initialization functions. 1009 DT_FINI_ARRAY = 26, // Pointer to array of termination functions. 1010 DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY. 1011 DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY. 1012 DT_RUNPATH = 29, // String table offset of lib search path. 1013 DT_FLAGS = 30, // Flags. 1014 DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules 1015 // for the interpretation of the d_un union. 1016 1017 DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions. 1018 DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array. 1019 1020 DT_LOOS = 0x60000000, // Start of environment specific tags. 1021 DT_HIOS = 0x6FFFFFFF, // End of environment specific tags. 1022 DT_LOPROC = 0x70000000, // Start of processor specific tags. 1023 DT_HIPROC = 0x7FFFFFFF // End of processor specific tags. 1024}; 1025 1026// DT_FLAGS values. 1027enum { 1028 DF_ORIGIN = 0x01, // The object may reference $ORIGIN. 1029 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe. 1030 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment. 1031 DF_BIND_NOW = 0x08, // Process all relocations on load. 1032 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. 1033}; 1034 1035} // end namespace ELF 1036 1037} // end namespace llvm 1038 1039#endif 1040