ELF.h revision 13534672deffb571d90f2c2f0a237c67d5aa0594
19a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org//===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===// 29a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// 39a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// The LLVM Compiler Infrastructure 49a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// 59a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// This file is distributed under the University of Illinois Open Source 69a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// License. See LICENSE.TXT for details. 79a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// 89a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org//===----------------------------------------------------------------------===// 99a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// 109a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// This header contains common, non-processor-specific data structures and 11e5abc854f3dc47de16067c2a41476c39b7626722henrik.lundin@webrtc.org// constants for the ELF file format. 12e5abc854f3dc47de16067c2a41476c39b7626722henrik.lundin@webrtc.org// 139a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// The details of the ELF32 bits in this file are largely based on the Tool 14e5abc854f3dc47de16067c2a41476c39b7626722henrik.lundin@webrtc.org// Interface Standard (TIS) Executable and Linking Format (ELF) Specification 159a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format 1649d62206ededc5905d6121d42fdcce8ed665b2c0kjellander@webrtc.org// Version 1.5, Draft 2, May 1998 as well as OpenBSD header files. 17774b3d38a4a0f1a8ec08972a3c543cb5d607ce13henrike@webrtc.org// 189a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org//===----------------------------------------------------------------------===// 199a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 209a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org#ifndef LLVM_SUPPORT_ELF_H 219a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org#define LLVM_SUPPORT_ELF_H 229a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 239a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org#include "llvm/System/DataTypes.h" 249a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org#include <cstring> 259a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 269a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgnamespace llvm { 279a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 289a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgnamespace ELF { 299a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 309a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint32_t Elf32_Addr; // Program address 319a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint16_t Elf32_Half; 329a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint32_t Elf32_Off; // File offset 339a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef int32_t Elf32_Sword; 349a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint32_t Elf32_Word; 359a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 369a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint64_t Elf64_Addr; 379a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint64_t Elf64_Off; 389a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef int32_t Elf64_Shalf; 399a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef int32_t Elf64_Sword; 409a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint32_t Elf64_Word; 419a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef int64_t Elf64_Sxword; 429a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint64_t Elf64_Xword; 439a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint32_t Elf64_Half; 449a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgtypedef uint16_t Elf64_Quarter; 459a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 469a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// Object file magic string. 479a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgstatic const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' }; 489a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 499a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// e_ident size and indices. 509a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgenum { 519a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_MAG0 = 0, // File identification index. 529a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_MAG1 = 1, // File identification index. 539a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_MAG2 = 2, // File identification index. 549a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_MAG3 = 3, // File identification index. 559a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_CLASS = 4, // File class. 569a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_DATA = 5, // Data encoding. 579a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_VERSION = 6, // File version. 589a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_OSABI = 7, // OS/ABI identification. 599a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_ABIVERSION = 8, // ABI version. 609a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_PAD = 9, // Start of padding bytes. 619a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org EI_NIDENT = 16 // Number of bytes in e_ident. 629a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org}; 639a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 649a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgstruct Elf32_Ehdr { 659a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 669a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_type; // Type of file (see ET_* below) 679a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_machine; // Required architecture for this file (see EM_*) 689a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Word e_version; // Must be equal to 1 699a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Addr e_entry; // Address to jump to in order to start program 709a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Off e_phoff; // Program header table's file offset, in bytes 719a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Off e_shoff; // Section header table's file offset, in bytes 729a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Word e_flags; // Processor-specific flags 739a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_ehsize; // Size of ELF header, in bytes 749a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_phentsize; // Size of an entry in the program header table 759a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_phnum; // Number of entries in the program header table 769a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_shentsize; // Size of an entry in the section header table 779a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_shnum; // Number of entries in the section header table 789a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 799a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org bool checkMagic() const { 809a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 819a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org } 829a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 839a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 849a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org}; 859a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org 869a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// 64-bit ELF header. Fields are the same as for ELF32, but with different 879a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org// types (see above). 889a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.orgstruct Elf64_Ehdr { 899a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org unsigned char e_ident[EI_NIDENT]; 909a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Quarter e_type; 919a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Quarter e_machine; 929a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Half e_version; 939a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Addr e_entry; 949a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Off e_phoff; 959a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Off e_shoff; 969a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Half e_flags; 979a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Quarter e_ehsize; 989a400812ca0006d12e538d465ab6728a8ecd07aahenrik.lundin@webrtc.org Elf64_Quarter e_phentsize; 99e5abc854f3dc47de16067c2a41476c39b7626722henrik.lundin@webrtc.org 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_PPC = 20, // PowerPC 139 EM_PPC64 = 21, // PowerPC64 140 EM_ARM = 40, // ARM 141 EM_ALPHA = 41, // DEC Alpha 142 EM_SPARCV9 = 43, // SPARC V9 143 EM_X86_64 = 62, // AMD64 144 EM_MBLAZE = 47787 // Xilinx MicroBlaze 145}; 146 147// Object file classes. 148enum { 149 ELFCLASS32 = 1, // 32-bit object file 150 ELFCLASS64 = 2 // 64-bit object file 151}; 152 153// Object file byte orderings. 154enum { 155 ELFDATANONE = 0, // Invalid data encoding. 156 ELFDATA2LSB = 1, // Little-endian object file 157 ELFDATA2MSB = 2 // Big-endian object file 158}; 159 160// OS ABI identification. 161enum { 162 ELFOSABI_NONE = 0, // UNIX System V ABI 163 ELFOSABI_HPUX = 1, // HP-UX operating system 164 ELFOSABI_NETBSD = 2, // NetBSD 165 ELFOSABI_LINUX = 3, // GNU/Linux 166 ELFOSABI_HURD = 4, // GNU/Hurd 167 ELFOSABI_SOLARIS = 6, // Solaris 168 ELFOSABI_AIX = 7, // AIX 169 ELFOSABI_IRIX = 8, // IRIX 170 ELFOSABI_FREEBSD = 9, // FreeBSD 171 ELFOSABI_TRU64 = 10, // TRU64 UNIX 172 ELFOSABI_MODESTO = 11, // Novell Modesto 173 ELFOSABI_OPENBSD = 12, // OpenBSD 174 ELFOSABI_OPENVMS = 13, // OpenVMS 175 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 176 ELFOSABI_AROS = 15, // AROS 177 ELFOSABI_FENIXOS = 16, // FenixOS 178 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 179 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 180 ELFOSABI_ARM = 97, // ARM 181 ELFOSABI_STANDALONE = 255 // Standalone (embedded) application 182}; 183 184// X86_64 relocations. 185enum { 186 R_X86_64_NONE = 0, 187 R_X86_64_64 = 1, 188 R_X86_64_PC32 = 2, 189 R_X86_64_GOT32 = 3, 190 R_X86_64_PLT32 = 4, 191 R_X86_64_COPY = 5, 192 R_X86_64_GLOB_DAT = 6, 193 R_X86_64_JUMP_SLOT = 7, 194 R_X86_64_RELATIVE = 8, 195 R_X86_64_GOTPCREL = 9, 196 R_X86_64_32 = 10, 197 R_X86_64_32S = 11, 198 R_X86_64_16 = 12, 199 R_X86_64_PC16 = 13, 200 R_X86_64_8 = 14, 201 R_X86_64_PC8 = 15, 202 R_X86_64_DTPMOD64 = 16, 203 R_X86_64_DTPOFF64 = 17, 204 R_X86_64_TPOFF64 = 18, 205 R_X86_64_TLSGD = 19, 206 R_X86_64_TLSLD = 20, 207 R_X86_64_DTPOFF32 = 21, 208 R_X86_64_GOTTPOFF = 22, 209 R_X86_64_TPOFF32 = 23, 210 R_X86_64_PC64 = 24, 211 R_X86_64_GOTOFF64 = 25, 212 R_X86_64_GOTPC32 = 26, 213 R_X86_64_SIZE32 = 32, 214 R_X86_64_SIZE64 = 33, 215 R_X86_64_GOTPC32_TLSDESC = 34, 216 R_X86_64_TLSDESC_CALL = 35, 217 R_X86_64_TLSDESC = 36 218}; 219 220// i386 relocations. 221// TODO: this is just a subset 222enum { 223 R_386_NONE = 0, 224 R_386_32 = 1, 225 R_386_PC32 = 2, 226 R_386_GOT32 = 3, 227 R_386_PLT32 = 4, 228 R_386_COPY = 5, 229 R_386_GLOB_DAT = 6, 230 R_386_JUMP_SLOT = 7, 231 R_386_RELATIVE = 8, 232 R_386_GOTOFF = 9, 233 R_386_GOTPC = 10, 234 R_386_32PLT = 11, 235 R_386_TLS_TPOFF = 14, 236 R_386_TLS_IE = 15, 237 R_386_TLS_GOTIE = 16, 238 R_386_TLS_LE = 17, 239 R_386_TLS_GD = 18, 240 R_386_TLS_LDM = 19, 241 R_386_16 = 20, 242 R_386_PC16 = 21, 243 R_386_8 = 22, 244 R_386_PC8 = 23, 245 R_386_TLS_GD_32 = 24, 246 R_386_TLS_GD_PUSH = 25, 247 R_386_TLS_GD_CALL = 26, 248 R_386_TLS_GD_POP = 27, 249 R_386_TLS_LDM_32 = 28, 250 R_386_TLS_LDM_PUSH = 29, 251 R_386_TLS_LDM_CALL = 30, 252 R_386_TLS_LDM_POP = 31, 253 R_386_TLS_LDO_32 = 32, 254 R_386_TLS_IE_32 = 33, 255 R_386_TLS_LE_32 = 34, 256 R_386_TLS_DTPMOD32 = 35, 257 R_386_TLS_DTPOFF32 = 36, 258 R_386_TLS_TPOFF32 = 37, 259 R_386_TLS_GOTDESC = 39, 260 R_386_TLS_DESC_CALL = 40, 261 R_386_TLS_DESC = 41, 262 R_386_IRELATIVE = 42, 263 R_386_NUM = 43 264}; 265 266// MBlaze relocations. 267enum { 268 R_MICROBLAZE_NONE = 0, 269 R_MICROBLAZE_32 = 1, 270 R_MICROBLAZE_32_PCREL = 2, 271 R_MICROBLAZE_64_PCREL = 3, 272 R_MICROBLAZE_32_PCREL_LO = 4, 273 R_MICROBLAZE_64 = 5, 274 R_MICROBLAZE_32_LO = 6, 275 R_MICROBLAZE_SRO32 = 7, 276 R_MICROBLAZE_SRW32 = 8, 277 R_MICROBLAZE_64_NONE = 9, 278 R_MICROBLAZE_32_SYM_OP_SYM = 10, 279 R_MICROBLAZE_GNU_VTINHERIT = 11, 280 R_MICROBLAZE_GNU_VTENTRY = 12, 281 R_MICROBLAZE_GOTPC_64 = 13, 282 R_MICROBLAZE_GOT_64 = 14, 283 R_MICROBLAZE_PLT_64 = 15, 284 R_MICROBLAZE_REL = 16, 285 R_MICROBLAZE_JUMP_SLOT = 17, 286 R_MICROBLAZE_GLOB_DAT = 18, 287 R_MICROBLAZE_GOTOFF_64 = 19, 288 R_MICROBLAZE_GOTOFF_32 = 20, 289 R_MICROBLAZE_COPY = 21 290}; 291 292// ELF Relocation types for ARM 293// Meets 2.08 ABI Specs. 294 295enum { 296 R_ARM_NONE = 0x00, 297 R_ARM_PC24 = 0x01, 298 R_ARM_ABS32 = 0x02, 299 R_ARM_REL32 = 0x03, 300 R_ARM_LDR_PC_G0 = 0x04, 301 R_ARM_ABS16 = 0x05, 302 R_ARM_ABS12 = 0x06, 303 R_ARM_THM_ABS5 = 0x07, 304 R_ARM_ABS8 = 0x08, 305 R_ARM_SBREL32 = 0x09, 306 R_ARM_THM_CALL = 0x0a, 307 R_ARM_THM_PC8 = 0x0b, 308 R_ARM_BREL_ADJ = 0x0c, 309 R_ARM_TLS_DESC = 0x0d, 310 R_ARM_THM_SWI8 = 0x0e, 311 R_ARM_XPC25 = 0x0f, 312 R_ARM_THM_XPC22 = 0x10, 313 R_ARM_TLS_DTPMOD32 = 0x11, 314 R_ARM_TLS_DTPOFF32 = 0x12, 315 R_ARM_TLS_TPOFF32 = 0x13, 316 R_ARM_COPY = 0x14, 317 R_ARM_GLOB_DAT = 0x15, 318 R_ARM_JUMP_SLOT = 0x16, 319 R_ARM_RELATIVE = 0x17, 320 R_ARM_GOTOFF32 = 0x18, 321 R_ARM_BASE_PREL = 0x19, 322 R_ARM_GOT_BREL = 0x1a, 323 R_ARM_PLT32 = 0x1b, 324 R_ARM_CALL = 0x1c, 325 R_ARM_JUMP24 = 0x1d, 326 R_ARM_THM_JUMP24 = 0x1e, 327 R_ARM_BASE_ABS = 0x1f, 328 R_ARM_ALU_PCREL_7_0 = 0x20, 329 R_ARM_ALU_PCREL_15_8 = 0x21, 330 R_ARM_ALU_PCREL_23_15 = 0x22, 331 R_ARM_LDR_SBREL_11_0_NC = 0x23, 332 R_ARM_ALU_SBREL_19_12_NC = 0x24, 333 R_ARM_ALU_SBREL_27_20_CK = 0x25, 334 R_ARM_TARGET1 = 0x26, 335 R_ARM_SBREL31 = 0x27, 336 R_ARM_V4BX = 0x28, 337 R_ARM_TARGET2 = 0x29, 338 R_ARM_PREL31 = 0x2a, 339 R_ARM_MOVW_ABS_NC = 0x2b, 340 R_ARM_MOVT_ABS = 0x2c, 341 R_ARM_MOVW_PREL_NC = 0x2d, 342 R_ARM_MOVT_PREL = 0x2e, 343 R_ARM_THM_MOVW_ABS_NC = 0x2f, 344 R_ARM_THM_MOVT_ABS = 0x30, 345 R_ARM_THM_MOVW_PREL_NC = 0x31, 346 R_ARM_THM_MOVT_PREL = 0x32, 347 R_ARM_THM_JUMP19 = 0x33, 348 R_ARM_THM_JUMP6 = 0x34, 349 R_ARM_THM_ALU_PREL_11_0 = 0x35, 350 R_ARM_THM_PC12 = 0x36, 351 R_ARM_ABS32_NOI = 0x37, 352 R_ARM_REL32_NOI = 0x38, 353 R_ARM_ALU_PC_G0_NC = 0x39, 354 R_ARM_ALU_PC_G0 = 0x3a, 355 R_ARM_ALU_PC_G1_NC = 0x3b, 356 R_ARM_ALU_PC_G1 = 0x3c, 357 R_ARM_ALU_PC_G2 = 0x3d, 358 R_ARM_LDR_PC_G1 = 0x3e, 359 R_ARM_LDR_PC_G2 = 0x3f, 360 R_ARM_LDRS_PC_G0 = 0x40, 361 R_ARM_LDRS_PC_G1 = 0x41, 362 R_ARM_LDRS_PC_G2 = 0x42, 363 R_ARM_LDC_PC_G0 = 0x43, 364 R_ARM_LDC_PC_G1 = 0x44, 365 R_ARM_LDC_PC_G2 = 0x45, 366 R_ARM_ALU_SB_G0_NC = 0x46, 367 R_ARM_ALU_SB_G0 = 0x47, 368 R_ARM_ALU_SB_G1_NC = 0x48, 369 R_ARM_ALU_SB_G1 = 0x49, 370 R_ARM_ALU_SB_G2 = 0x4a, 371 R_ARM_LDR_SB_G0 = 0x4b, 372 R_ARM_LDR_SB_G1 = 0x4c, 373 R_ARM_LDR_SB_G2 = 0x4d, 374 R_ARM_LDRS_SB_G0 = 0x4e, 375 R_ARM_LDRS_SB_G1 = 0x4f, 376 R_ARM_LDRS_SB_G2 = 0x50, 377 R_ARM_LDC_SB_G0 = 0x51, 378 R_ARM_LDC_SB_G1 = 0x52, 379 R_ARM_LDC_SB_G2 = 0x53, 380 R_ARM_MOVW_BREL_NC = 0x54, 381 R_ARM_MOVT_BREL = 0x55, 382 R_ARM_MOVW_BREL = 0x56, 383 R_ARM_THM_MOVW_BREL_NC = 0x57, 384 R_ARM_THM_MOVT_BREL = 0x58, 385 R_ARM_THM_MOVW_BREL = 0x59, 386 R_ARM_TLS_GOTDESC = 0x5a, 387 R_ARM_TLS_CALL = 0x5b, 388 R_ARM_TLS_DESCSEQ = 0x5c, 389 R_ARM_THM_TLS_CALL = 0x5d, 390 R_ARM_PLT32_ABS = 0x5e, 391 R_ARM_GOT_ABS = 0x5f, 392 R_ARM_GOT_PREL = 0x60, 393 R_ARM_GOT_BREL12 = 0x61, 394 R_ARM_GOTOFF12 = 0x62, 395 R_ARM_GOTRELAX = 0x63, 396 R_ARM_GNU_VTENTRY = 0x64, 397 R_ARM_GNU_VTINHERIT = 0x65, 398 R_ARM_THM_JUMP11 = 0x66, 399 R_ARM_THM_JUMP8 = 0x67, 400 R_ARM_TLS_GD32 = 0x68, 401 R_ARM_TLS_LDM32 = 0x69, 402 R_ARM_TLS_LDO32 = 0x6a, 403 R_ARM_TLS_IE32 = 0x6b, 404 R_ARM_TLS_LE32 = 0x6c, 405 R_ARM_TLS_LDO12 = 0x6d, 406 R_ARM_TLS_LE12 = 0x6e, 407 R_ARM_TLS_IE12GP = 0x6f, 408 R_ARM_PRIVATE_0 = 0x70, 409 R_ARM_PRIVATE_1 = 0x71, 410 R_ARM_PRIVATE_2 = 0x72, 411 R_ARM_PRIVATE_3 = 0x73, 412 R_ARM_PRIVATE_4 = 0x74, 413 R_ARM_PRIVATE_5 = 0x75, 414 R_ARM_PRIVATE_6 = 0x76, 415 R_ARM_PRIVATE_7 = 0x77, 416 R_ARM_PRIVATE_8 = 0x78, 417 R_ARM_PRIVATE_9 = 0x79, 418 R_ARM_PRIVATE_10 = 0x7a, 419 R_ARM_PRIVATE_11 = 0x7b, 420 R_ARM_PRIVATE_12 = 0x7c, 421 R_ARM_PRIVATE_13 = 0x7d, 422 R_ARM_PRIVATE_14 = 0x7e, 423 R_ARM_PRIVATE_15 = 0x7f, 424 R_ARM_ME_TOO = 0x80, 425 R_ARM_THM_TLS_DESCSEQ16 = 0x81, 426 R_ARM_THM_TLS_DESCSEQ32 = 0x82 427}; 428 429 430 431// Section header. 432struct Elf32_Shdr { 433 Elf32_Word sh_name; // Section name (index into string table) 434 Elf32_Word sh_type; // Section type (SHT_*) 435 Elf32_Word sh_flags; // Section flags (SHF_*) 436 Elf32_Addr sh_addr; // Address where section is to be loaded 437 Elf32_Off sh_offset; // File offset of section data, in bytes 438 Elf32_Word sh_size; // Size of section, in bytes 439 Elf32_Word sh_link; // Section type-specific header table index link 440 Elf32_Word sh_info; // Section type-specific extra information 441 Elf32_Word sh_addralign; // Section address alignment 442 Elf32_Word sh_entsize; // Size of records contained within the section 443}; 444 445// Section header for ELF64 - same fields as ELF32, different types. 446struct Elf64_Shdr { 447 Elf64_Half sh_name; 448 Elf64_Half sh_type; 449 Elf64_Xword sh_flags; 450 Elf64_Addr sh_addr; 451 Elf64_Off sh_offset; 452 Elf64_Xword sh_size; 453 Elf64_Half sh_link; 454 Elf64_Half sh_info; 455 Elf64_Xword sh_addralign; 456 Elf64_Xword sh_entsize; 457}; 458 459// Special section indices. 460enum { 461 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 462 SHN_LORESERVE = 0xff00, // Lowest reserved index 463 SHN_LOPROC = 0xff00, // Lowest processor-specific index 464 SHN_HIPROC = 0xff1f, // Highest processor-specific index 465 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 466 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 467 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 468 SHN_HIRESERVE = 0xffff // Highest reserved index 469}; 470 471// Section types. 472enum { 473 SHT_NULL = 0, // No associated section (inactive entry). 474 SHT_PROGBITS = 1, // Program-defined contents. 475 SHT_SYMTAB = 2, // Symbol table. 476 SHT_STRTAB = 3, // String table. 477 SHT_RELA = 4, // Relocation entries; explicit addends. 478 SHT_HASH = 5, // Symbol hash table. 479 SHT_DYNAMIC = 6, // Information for dynamic linking. 480 SHT_NOTE = 7, // Information about the file. 481 SHT_NOBITS = 8, // Data occupies no space in the file. 482 SHT_REL = 9, // Relocation entries; no explicit addends. 483 SHT_SHLIB = 10, // Reserved. 484 SHT_DYNSYM = 11, // Symbol table. 485 SHT_INIT_ARRAY = 14, // Pointers to initialisation functions. 486 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 487 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 488 SHT_GROUP = 17, // Section group. 489 SHT_SYMTAB_SHNDX = 18, // Indicies for SHN_XINDEX entries. 490 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 491 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 492 SHT_LOPROC = 0x70000000, // Lowest processor architecture-specific type. 493 // Fixme: All this is duplicated in MCSectionELF. Why?? 494 // Exception Index table 495 SHT_ARM_EXIDX = 0x70000001U, 496 // BPABI DLL dynamic linking pre-emption map 497 SHT_ARM_PREEMPTMAP = 0x70000002U, 498 // Object file compatibility attributes 499 SHT_ARM_ATTRIBUTES = 0x70000003U, 500 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 501 SHT_ARM_OVERLAYSECTION = 0x70000005U, 502 503 SHT_HIPROC = 0x7fffffff, // Highest processor architecture-specific type. 504 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 505 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 506}; 507 508// Section flags. 509enum { 510 SHF_WRITE = 0x1, // Section data should be writable during execution. 511 SHF_ALLOC = 0x2, // Section occupies memory during program execution. 512 SHF_EXECINSTR = 0x4, // Section contains executable machine instructions. 513 SHF_MASKPROC = 0xf0000000 // Bits indicating processor-specific flags. 514}; 515 516// Section Group Flags 517enum { 518 GRP_COMDAT = 0x1, 519 GRP_MASKOS = 0x0ff00000, 520 GRP_MASKPROC = 0xf0000000 521}; 522 523// Symbol table entries for ELF32. 524struct Elf32_Sym { 525 Elf32_Word st_name; // Symbol name (index into string table) 526 Elf32_Addr st_value; // Value or address associated with the symbol 527 Elf32_Word st_size; // Size of the symbol 528 unsigned char st_info; // Symbol's type and binding attributes 529 unsigned char st_other; // Must be zero; reserved 530 Elf32_Half st_shndx; // Which section (header table index) it's defined in 531 532 // These accessors and mutators correspond to the ELF32_ST_BIND, 533 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 534 unsigned char getBinding() const { return st_info >> 4; } 535 unsigned char getType() const { return st_info & 0x0f; } 536 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 537 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 538 void setBindingAndType(unsigned char b, unsigned char t) { 539 st_info = (b << 4) + (t & 0x0f); 540 } 541}; 542 543// Symbol table entries for ELF64. 544struct Elf64_Sym { 545 Elf64_Word st_name; // Symbol name (index into string table) 546 unsigned char st_info; // Symbol's type and binding attributes 547 unsigned char st_other; // Must be zero; reserved 548 Elf64_Half st_shndx; // Which section (header table index) it's defined in 549 Elf64_Addr st_value; // Value or address associated with the symbol 550 Elf64_Xword st_size; // Size of the symbol 551 552 // These accessors and mutators are identical to those defined for ELF32 553 // symbol table entries. 554 unsigned char getBinding() const { return st_info >> 4; } 555 unsigned char getType() const { return st_info & 0x0f; } 556 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 557 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 558 void setBindingAndType(unsigned char b, unsigned char t) { 559 st_info = (b << 4) + (t & 0x0f); 560 } 561}; 562 563// The size (in bytes) of symbol table entries. 564enum { 565 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 566 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 567}; 568 569// Symbol bindings. 570enum { 571 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 572 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 573 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 574 STB_LOPROC = 13, // Lowest processor-specific binding type 575 STB_HIPROC = 15 // Highest processor-specific binding type 576}; 577 578// Symbol types. 579enum { 580 STT_NOTYPE = 0, // Symbol's type is not specified 581 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 582 STT_FUNC = 2, // Symbol is executable code (function, etc.) 583 STT_SECTION = 3, // Symbol refers to a section 584 STT_FILE = 4, // Local, absolute symbol that refers to a file 585 STT_COMMON = 5, // An uninitialised common block 586 STT_TLS = 6, // Thread local data object 587 STT_LOPROC = 13, // Lowest processor-specific symbol type 588 STT_HIPROC = 15 // Highest processor-specific symbol type 589}; 590 591enum { 592 STV_DEFAULT = 0, // Visibility is specified by binding type 593 STV_INTERNAL = 1, // Defined by processor supplements 594 STV_HIDDEN = 2, // Not visible to other components 595 STV_PROTECTED = 3 // Visible in other components but not preemptable 596}; 597 598// Relocation entry, without explicit addend. 599struct Elf32_Rel { 600 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 601 Elf32_Word r_info; // Symbol table index and type of relocation to apply 602 603 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 604 // and ELF32_R_INFO macros defined in the ELF specification: 605 Elf32_Word getSymbol() const { return (r_info >> 8); } 606 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 607 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 608 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 609 void setSymbolAndType(Elf32_Word s, unsigned char t) { 610 r_info = (s << 8) + t; 611 } 612}; 613 614// Relocation entry with explicit addend. 615struct Elf32_Rela { 616 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 617 Elf32_Word r_info; // Symbol table index and type of relocation to apply 618 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 619 620 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 621 // and ELF32_R_INFO macros defined in the ELF specification: 622 Elf32_Word getSymbol() const { return (r_info >> 8); } 623 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 624 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 625 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 626 void setSymbolAndType(Elf32_Word s, unsigned char t) { 627 r_info = (s << 8) + t; 628 } 629}; 630 631// Relocation entry, without explicit addend. 632struct Elf64_Rel { 633 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 634 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 635 636 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 637 // and ELF64_R_INFO macros defined in the ELF specification: 638 Elf64_Xword getSymbol() const { return (r_info >> 32); } 639 unsigned char getType() const { 640 return (unsigned char) (r_info & 0xffffffffL); 641 } 642 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 643 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 644 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 645 r_info = (s << 32) + (t&0xffffffffL); 646 } 647}; 648 649// Relocation entry with explicit addend. 650struct Elf64_Rela { 651 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 652 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 653 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 654 655 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 656 // and ELF64_R_INFO macros defined in the ELF specification: 657 Elf64_Xword getSymbol() const { return (r_info >> 32); } 658 unsigned char getType() const { 659 return (unsigned char) (r_info & 0xffffffffL); 660 } 661 void setSymbol(Elf64_Xword s) { setSymbolAndType(s, getType()); } 662 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 663 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 664 r_info = (s << 32) + (t&0xffffffffL); 665 } 666}; 667 668// Program header for ELF32. 669struct Elf32_Phdr { 670 Elf32_Word p_type; // Type of segment 671 Elf32_Off p_offset; // File offset where segment is located, in bytes 672 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 673 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 674 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 675 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 676 Elf32_Word p_flags; // Segment flags 677 Elf32_Word p_align; // Segment alignment constraint 678}; 679 680// Program header for ELF64. 681struct Elf64_Phdr { 682 Elf64_Word p_type; // Type of segment 683 Elf64_Word p_flags; // Segment flags 684 Elf64_Off p_offset; // File offset where segment is located, in bytes 685 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 686 Elf64_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 687 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 688 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 689 Elf64_Xword p_align; // Segment alignment constraint 690}; 691 692// Segment types. 693enum { 694 PT_NULL = 0, // Unused segment. 695 PT_LOAD = 1, // Loadable segment. 696 PT_DYNAMIC = 2, // Dynamic linking information. 697 PT_INTERP = 3, // Interpreter pathname. 698 PT_NOTE = 4, // Auxiliary information. 699 PT_SHLIB = 5, // Reserved. 700 PT_PHDR = 6, // The program header table itself. 701 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 702 PT_HIPROC = 0x7fffffff // Highest processor-specific program hdr entry type. 703}; 704 705// Segment flag bits. 706enum { 707 PF_X = 1, // Execute 708 PF_W = 2, // Write 709 PF_R = 4, // Read 710 PF_MASKPROC = 0xf0000000 // Unspecified 711}; 712 713// Dynamic table entry for ELF32. 714struct Elf32_Dyn 715{ 716 Elf32_Sword d_tag; // Type of dynamic table entry. 717 union 718 { 719 Elf32_Word d_val; // Integer value of entry. 720 Elf32_Addr d_ptr; // Pointer value of entry. 721 } d_un; 722}; 723 724// Dynamic table entry for ELF64. 725struct Elf64_Dyn 726{ 727 Elf64_Sxword d_tag; // Type of dynamic table entry. 728 union 729 { 730 Elf64_Xword d_val; // Integer value of entry. 731 Elf64_Addr d_ptr; // Pointer value of entry. 732 } d_un; 733}; 734 735// Dynamic table entry tags. 736enum { 737 DT_NULL = 0, // Marks end of dynamic array. 738 DT_NEEDED = 1, // String table offset of needed library. 739 DT_PLTRELSZ = 2, // Size of relocation entries in PLT. 740 DT_PLTGOT = 3, // Address associated with linkage table. 741 DT_HASH = 4, // Address of symbolic hash table. 742 DT_STRTAB = 5, // Address of dynamic string table. 743 DT_SYMTAB = 6, // Address of dynamic symbol table. 744 DT_RELA = 7, // Address of relocation table (Rela entries). 745 DT_RELASZ = 8, // Size of Rela relocation table. 746 DT_RELAENT = 9, // Size of a Rela relocation entry. 747 DT_STRSZ = 10, // Total size of the string table. 748 DT_SYMENT = 11, // Size of a symbol table entry. 749 DT_INIT = 12, // Address of initialization function. 750 DT_FINI = 13, // Address of termination function. 751 DT_SONAME = 14, // String table offset of a shared objects name. 752 DT_RPATH = 15, // String table offset of library search path. 753 DT_SYMBOLIC = 16, // Changes symbol resolution algorithm. 754 DT_REL = 17, // Address of relocation table (Rel entries). 755 DT_RELSZ = 18, // Size of Rel relocation table. 756 DT_RELENT = 19, // Size of a Rel relocation entry. 757 DT_PLTREL = 20, // Type of relocation entry used for linking. 758 DT_DEBUG = 21, // Reserved for debugger. 759 DT_TEXTREL = 22, // Relocations exist for non-writable segements. 760 DT_JMPREL = 23, // Address of relocations associated with PLT. 761 DT_BIND_NOW = 24, // Process all relocations before execution. 762 DT_INIT_ARRAY = 25, // Pointer to array of initialization functions. 763 DT_FINI_ARRAY = 26, // Pointer to array of termination functions. 764 DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY. 765 DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY. 766 DT_LOOS = 0x60000000, // Start of environment specific tags. 767 DT_HIOS = 0x6FFFFFFF, // End of environment specific tags. 768 DT_LOPROC = 0x70000000, // Start of processor specific tags. 769 DT_HIPROC = 0x7FFFFFFF // End of processor specific tags. 770}; 771 772} // end namespace ELF 773 774} // end namespace llvm 775 776#endif 777