1 //===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This header contains common, non-processor-specific data structures and
11 // constants for the ELF file format.
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.
18 //===----------------------------------------------------------------------===//
20 #ifndef LLVM_SUPPORT_ELF_H
21 #define LLVM_SUPPORT_ELF_H
23 #include "llvm/Support/DataTypes.h"
30 typedef uint32_t Elf32_Addr; // Program address
31 typedef uint32_t Elf32_Off; // File offset
32 typedef uint16_t Elf32_Half;
33 typedef uint32_t Elf32_Word;
34 typedef int32_t Elf32_Sword;
36 typedef uint64_t Elf64_Addr;
37 typedef uint64_t Elf64_Off;
38 typedef uint16_t Elf64_Half;
39 typedef uint32_t Elf64_Word;
40 typedef int32_t Elf64_Sword;
41 typedef uint64_t Elf64_Xword;
42 typedef int64_t Elf64_Sxword;
44 // Object file magic string.
45 static const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' };
47 // e_ident size and indices.
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.
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;
80 unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
81 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
84 // 64-bit ELF header. Fields are the same as for ELF32, but with different
87 unsigned char e_ident[EI_NIDENT];
96 Elf64_Half e_phentsize;
98 Elf64_Half e_shentsize;
100 Elf64_Half e_shstrndx;
101 bool checkMagic() const {
102 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
104 unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
105 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
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
125 // Machine architectures
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
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
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
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
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
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
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
293 // Object file classes.
296 ELFCLASS32 = 1, // 32-bit object file
297 ELFCLASS64 = 2 // 64-bit object file
300 // Object file byte orderings.
302 ELFDATANONE = 0, // Invalid data encoding.
303 ELFDATA2LSB = 1, // Little-endian object file
304 ELFDATA2MSB = 2 // Big-endian object file
307 // OS ABI identification.
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
331 // X86_64 relocations.
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,
349 R_X86_64_DTPMOD64 = 16,
350 R_X86_64_DTPOFF64 = 17,
351 R_X86_64_TPOFF64 = 18,
354 R_X86_64_DTPOFF32 = 21,
355 R_X86_64_GOTTPOFF = 22,
356 R_X86_64_TPOFF32 = 23,
358 R_X86_64_GOTOFF64 = 25,
359 R_X86_64_GOTPC32 = 26,
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
373 // TODO: this is just a subset
387 R_386_TLS_TPOFF = 14,
389 R_386_TLS_GOTIE = 16,
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,
414 R_386_IRELATIVE = 42,
418 // MBlaze relocations.
420 R_MICROBLAZE_NONE = 0,
422 R_MICROBLAZE_32_PCREL = 2,
423 R_MICROBLAZE_64_PCREL = 3,
424 R_MICROBLAZE_32_PCREL_LO = 4,
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
444 // ELF Relocation types for PPC32
446 R_PPC_NONE = 0, /* No relocation. */
454 R_PPC_ADDR14_BRTAKEN = 8,
455 R_PPC_ADDR14_BRNTAKEN = 9,
458 R_PPC_REL14_BRTAKEN = 12,
459 R_PPC_REL14_BRNTAKEN = 13,
463 // ELF Relocation types for PPC64
465 R_PPC64_ADDR16_LO = 4,
466 R_PPC64_ADDR16_HI = 5,
470 R_PPC64_ADDR16_HIGHER = 39,
471 R_PPC64_ADDR16_HIGHEST = 41,
474 R_PPC64_TOC16_DS = 63
477 // ARM Specific e_flags
478 enum { EF_ARM_EABIMASK = 0xFF000000U };
480 // ELF Relocation types for ARM
481 // Meets 2.08 ABI Specs.
488 R_ARM_LDR_PC_G0 = 0x04,
491 R_ARM_THM_ABS5 = 0x07,
493 R_ARM_SBREL32 = 0x09,
494 R_ARM_THM_CALL = 0x0a,
495 R_ARM_THM_PC8 = 0x0b,
496 R_ARM_BREL_ADJ = 0x0c,
497 R_ARM_TLS_DESC = 0x0d,
498 R_ARM_THM_SWI8 = 0x0e,
500 R_ARM_THM_XPC22 = 0x10,
501 R_ARM_TLS_DTPMOD32 = 0x11,
502 R_ARM_TLS_DTPOFF32 = 0x12,
503 R_ARM_TLS_TPOFF32 = 0x13,
505 R_ARM_GLOB_DAT = 0x15,
506 R_ARM_JUMP_SLOT = 0x16,
507 R_ARM_RELATIVE = 0x17,
508 R_ARM_GOTOFF32 = 0x18,
509 R_ARM_BASE_PREL = 0x19,
510 R_ARM_GOT_BREL = 0x1a,
514 R_ARM_THM_JUMP24 = 0x1e,
515 R_ARM_BASE_ABS = 0x1f,
516 R_ARM_ALU_PCREL_7_0 = 0x20,
517 R_ARM_ALU_PCREL_15_8 = 0x21,
518 R_ARM_ALU_PCREL_23_15 = 0x22,
519 R_ARM_LDR_SBREL_11_0_NC = 0x23,
520 R_ARM_ALU_SBREL_19_12_NC = 0x24,
521 R_ARM_ALU_SBREL_27_20_CK = 0x25,
522 R_ARM_TARGET1 = 0x26,
523 R_ARM_SBREL31 = 0x27,
525 R_ARM_TARGET2 = 0x29,
527 R_ARM_MOVW_ABS_NC = 0x2b,
528 R_ARM_MOVT_ABS = 0x2c,
529 R_ARM_MOVW_PREL_NC = 0x2d,
530 R_ARM_MOVT_PREL = 0x2e,
531 R_ARM_THM_MOVW_ABS_NC = 0x2f,
532 R_ARM_THM_MOVT_ABS = 0x30,
533 R_ARM_THM_MOVW_PREL_NC = 0x31,
534 R_ARM_THM_MOVT_PREL = 0x32,
535 R_ARM_THM_JUMP19 = 0x33,
536 R_ARM_THM_JUMP6 = 0x34,
537 R_ARM_THM_ALU_PREL_11_0 = 0x35,
538 R_ARM_THM_PC12 = 0x36,
539 R_ARM_ABS32_NOI = 0x37,
540 R_ARM_REL32_NOI = 0x38,
541 R_ARM_ALU_PC_G0_NC = 0x39,
542 R_ARM_ALU_PC_G0 = 0x3a,
543 R_ARM_ALU_PC_G1_NC = 0x3b,
544 R_ARM_ALU_PC_G1 = 0x3c,
545 R_ARM_ALU_PC_G2 = 0x3d,
546 R_ARM_LDR_PC_G1 = 0x3e,
547 R_ARM_LDR_PC_G2 = 0x3f,
548 R_ARM_LDRS_PC_G0 = 0x40,
549 R_ARM_LDRS_PC_G1 = 0x41,
550 R_ARM_LDRS_PC_G2 = 0x42,
551 R_ARM_LDC_PC_G0 = 0x43,
552 R_ARM_LDC_PC_G1 = 0x44,
553 R_ARM_LDC_PC_G2 = 0x45,
554 R_ARM_ALU_SB_G0_NC = 0x46,
555 R_ARM_ALU_SB_G0 = 0x47,
556 R_ARM_ALU_SB_G1_NC = 0x48,
557 R_ARM_ALU_SB_G1 = 0x49,
558 R_ARM_ALU_SB_G2 = 0x4a,
559 R_ARM_LDR_SB_G0 = 0x4b,
560 R_ARM_LDR_SB_G1 = 0x4c,
561 R_ARM_LDR_SB_G2 = 0x4d,
562 R_ARM_LDRS_SB_G0 = 0x4e,
563 R_ARM_LDRS_SB_G1 = 0x4f,
564 R_ARM_LDRS_SB_G2 = 0x50,
565 R_ARM_LDC_SB_G0 = 0x51,
566 R_ARM_LDC_SB_G1 = 0x52,
567 R_ARM_LDC_SB_G2 = 0x53,
568 R_ARM_MOVW_BREL_NC = 0x54,
569 R_ARM_MOVT_BREL = 0x55,
570 R_ARM_MOVW_BREL = 0x56,
571 R_ARM_THM_MOVW_BREL_NC = 0x57,
572 R_ARM_THM_MOVT_BREL = 0x58,
573 R_ARM_THM_MOVW_BREL = 0x59,
574 R_ARM_TLS_GOTDESC = 0x5a,
575 R_ARM_TLS_CALL = 0x5b,
576 R_ARM_TLS_DESCSEQ = 0x5c,
577 R_ARM_THM_TLS_CALL = 0x5d,
578 R_ARM_PLT32_ABS = 0x5e,
579 R_ARM_GOT_ABS = 0x5f,
580 R_ARM_GOT_PREL = 0x60,
581 R_ARM_GOT_BREL12 = 0x61,
582 R_ARM_GOTOFF12 = 0x62,
583 R_ARM_GOTRELAX = 0x63,
584 R_ARM_GNU_VTENTRY = 0x64,
585 R_ARM_GNU_VTINHERIT = 0x65,
586 R_ARM_THM_JUMP11 = 0x66,
587 R_ARM_THM_JUMP8 = 0x67,
588 R_ARM_TLS_GD32 = 0x68,
589 R_ARM_TLS_LDM32 = 0x69,
590 R_ARM_TLS_LDO32 = 0x6a,
591 R_ARM_TLS_IE32 = 0x6b,
592 R_ARM_TLS_LE32 = 0x6c,
593 R_ARM_TLS_LDO12 = 0x6d,
594 R_ARM_TLS_LE12 = 0x6e,
595 R_ARM_TLS_IE12GP = 0x6f,
596 R_ARM_PRIVATE_0 = 0x70,
597 R_ARM_PRIVATE_1 = 0x71,
598 R_ARM_PRIVATE_2 = 0x72,
599 R_ARM_PRIVATE_3 = 0x73,
600 R_ARM_PRIVATE_4 = 0x74,
601 R_ARM_PRIVATE_5 = 0x75,
602 R_ARM_PRIVATE_6 = 0x76,
603 R_ARM_PRIVATE_7 = 0x77,
604 R_ARM_PRIVATE_8 = 0x78,
605 R_ARM_PRIVATE_9 = 0x79,
606 R_ARM_PRIVATE_10 = 0x7a,
607 R_ARM_PRIVATE_11 = 0x7b,
608 R_ARM_PRIVATE_12 = 0x7c,
609 R_ARM_PRIVATE_13 = 0x7d,
610 R_ARM_PRIVATE_14 = 0x7e,
611 R_ARM_PRIVATE_15 = 0x7f,
613 R_ARM_THM_TLS_DESCSEQ16 = 0x81,
614 R_ARM_THM_TLS_DESCSEQ32 = 0x82
617 // Mips Specific e_flags
619 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
620 EF_MIPS_PIC = 0x00000002, // Position independent code
621 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
622 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
623 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
624 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
625 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
626 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
627 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
628 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
629 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2
630 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2
631 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
634 // ELF Relocation types for Mips
654 R_MIPS_GOT_DISP = 19,
655 R_MIPS_GOT_PAGE = 20,
656 R_MIPS_GOT_OFST = 21,
657 R_MIPS_GOT_HI16 = 22,
658 R_MIPS_GOT_LO16 = 23,
660 R_MIPS_INSERT_A = 25,
661 R_MIPS_INSERT_B = 26,
665 R_MIPS_CALL_HI16 = 30,
666 R_MIPS_CALL_LO16 = 31,
667 R_MIPS_SCN_DISP = 32,
669 R_MIPS_ADD_IMMEDIATE = 34,
673 R_MIPS_TLS_DTPMOD32 = 38,
674 R_MIPS_TLS_DTPREL32 = 39,
675 R_MIPS_TLS_DTPMOD64 = 40,
676 R_MIPS_TLS_DTPREL64 = 41,
679 R_MIPS_TLS_DTPREL_HI16 = 44,
680 R_MIPS_TLS_DTPREL_LO16 = 45,
681 R_MIPS_TLS_GOTTPREL = 46,
682 R_MIPS_TLS_TPREL32 = 47,
683 R_MIPS_TLS_TPREL64 = 48,
684 R_MIPS_TLS_TPREL_HI16 = 49,
685 R_MIPS_TLS_TPREL_LO16 = 50,
686 R_MIPS_GLOB_DAT = 51,
688 R_MIPS_JUMP_SLOT = 127,
692 // ELF Relocation types for Hexagon
693 // Release 5 ABI - Document: 80-V9418-3 Rev. J
705 R_HEX_GPREL16_1 = 10,
706 R_HEX_GPREL16_2 = 11,
707 R_HEX_GPREL16_3 = 12,
709 R_HEX_B13_PCREL = 14,
711 R_HEX_B32_PCREL_X = 16,
713 R_HEX_B22_PCREL_X = 18,
714 R_HEX_B15_PCREL_X = 19,
715 R_HEX_B13_PCREL_X = 20,
716 R_HEX_B9_PCREL_X = 21,
717 R_HEX_B7_PCREL_X = 22,
731 R_HEX_PLT_B22_PCREL = 36,
732 R_HEX_GOTREL_LO16 = 37,
733 R_HEX_GOTREL_HI16 = 38,
734 R_HEX_GOTREL_32 = 39,
739 R_HEX_DTPMOD_32 = 44,
740 R_HEX_DTPREL_LO16 = 45,
741 R_HEX_DTPREL_HI16 = 46,
742 R_HEX_DTPREL_32 = 47,
743 R_HEX_DTPREL_16 = 48,
744 R_HEX_GD_PLT_B22_PCREL = 49,
745 R_HEX_GD_GOT_LO16 = 50,
746 R_HEX_GD_GOT_HI16 = 51,
747 R_HEX_GD_GOT_32 = 52,
748 R_HEX_GD_GOT_16 = 53,
752 R_HEX_IE_GOT_LO16 = 57,
753 R_HEX_IE_GOT_HI16 = 58,
754 R_HEX_IE_GOT_32 = 59,
755 R_HEX_IE_GOT_16 = 60,
756 R_HEX_TPREL_LO16 = 61,
757 R_HEX_TPREL_HI16 = 62,
760 R_HEX_6_PCREL_X = 65,
761 R_HEX_GOTREL_32_6_X = 66,
762 R_HEX_GOTREL_16_X = 67,
763 R_HEX_GOTREL_11_X = 68,
764 R_HEX_GOT_32_6_X = 69,
767 R_HEX_DTPREL_32_6_X = 72,
768 R_HEX_DTPREL_16_X = 73,
769 R_HEX_DTPREL_11_X = 74,
770 R_HEX_GD_GOT_32_6_X = 75,
771 R_HEX_GD_GOT_16_X = 76,
772 R_HEX_GD_GOT_11_X = 77,
773 R_HEX_IE_32_6_X = 78,
775 R_HEX_IE_GOT_32_6_X = 80,
776 R_HEX_IE_GOT_16_X = 81,
777 R_HEX_IE_GOT_11_X = 82,
778 R_HEX_TPREL_32_6_X = 83,
779 R_HEX_TPREL_16_X = 84,
780 R_HEX_TPREL_11_X = 85
785 Elf32_Word sh_name; // Section name (index into string table)
786 Elf32_Word sh_type; // Section type (SHT_*)
787 Elf32_Word sh_flags; // Section flags (SHF_*)
788 Elf32_Addr sh_addr; // Address where section is to be loaded
789 Elf32_Off sh_offset; // File offset of section data, in bytes
790 Elf32_Word sh_size; // Size of section, in bytes
791 Elf32_Word sh_link; // Section type-specific header table index link
792 Elf32_Word sh_info; // Section type-specific extra information
793 Elf32_Word sh_addralign; // Section address alignment
794 Elf32_Word sh_entsize; // Size of records contained within the section
797 // Section header for ELF64 - same fields as ELF32, different types.
801 Elf64_Xword sh_flags;
807 Elf64_Xword sh_addralign;
808 Elf64_Xword sh_entsize;
811 // Special section indices.
813 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
814 SHN_LORESERVE = 0xff00, // Lowest reserved index
815 SHN_LOPROC = 0xff00, // Lowest processor-specific index
816 SHN_HIPROC = 0xff1f, // Highest processor-specific index
817 SHN_LOOS = 0xff20, // Lowest operating system-specific index
818 SHN_HIOS = 0xff3f, // Highest operating system-specific index
819 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
820 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
821 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
822 SHN_HIRESERVE = 0xffff // Highest reserved index
827 SHT_NULL = 0, // No associated section (inactive entry).
828 SHT_PROGBITS = 1, // Program-defined contents.
829 SHT_SYMTAB = 2, // Symbol table.
830 SHT_STRTAB = 3, // String table.
831 SHT_RELA = 4, // Relocation entries; explicit addends.
832 SHT_HASH = 5, // Symbol hash table.
833 SHT_DYNAMIC = 6, // Information for dynamic linking.
834 SHT_NOTE = 7, // Information about the file.
835 SHT_NOBITS = 8, // Data occupies no space in the file.
836 SHT_REL = 9, // Relocation entries; no explicit addends.
837 SHT_SHLIB = 10, // Reserved.
838 SHT_DYNSYM = 11, // Symbol table.
839 SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
840 SHT_FINI_ARRAY = 15, // Pointers to termination functions.
841 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
842 SHT_GROUP = 17, // Section group.
843 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
844 SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
845 SHT_GNU_ATTRIBUTES= 0x6ffffff5, // Object attributes.
846 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
847 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
848 SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
849 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
850 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
851 SHT_LOPROC = 0x70000000, // Lowest processor architecture-specific type.
852 // Fixme: All this is duplicated in MCSectionELF. Why??
853 // Exception Index table
854 SHT_ARM_EXIDX = 0x70000001U,
855 // BPABI DLL dynamic linking pre-emption map
856 SHT_ARM_PREEMPTMAP = 0x70000002U,
857 // Object file compatibility attributes
858 SHT_ARM_ATTRIBUTES = 0x70000003U,
859 SHT_ARM_DEBUGOVERLAY = 0x70000004U,
860 SHT_ARM_OVERLAYSECTION = 0x70000005U,
862 SHT_X86_64_UNWIND = 0x70000001, // Unwind information
864 SHT_HIPROC = 0x7fffffff, // Highest processor architecture-specific type.
865 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
866 SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
871 // Section data should be writable during execution.
874 // Section occupies memory during program execution.
877 // Section contains executable machine instructions.
880 // The data in this section may be merged.
883 // The data in this section is null-terminated strings.
886 // A field in this section holds a section header table index.
887 SHF_INFO_LINK = 0x40U,
889 // Adds special ordering requirements for link editors.
890 SHF_LINK_ORDER = 0x80U,
892 // This section requires special OS-specific processing to avoid incorrect
894 SHF_OS_NONCONFORMING = 0x100U,
896 // This section is a member of a section group.
899 // This section holds Thread-Local Storage.
902 // Start of target-specific flags.
904 /// XCORE_SHF_CP_SECTION - All sections with the "c" flag are grouped
905 /// together by the linker to form the constant pool and the cp register is
906 /// set to the start of the constant pool by the boot code.
907 XCORE_SHF_CP_SECTION = 0x800U,
909 /// XCORE_SHF_DP_SECTION - All sections with the "d" flag are grouped
910 /// together by the linker to form the data section and the dp register is
911 /// set to the start of the section by the boot code.
912 XCORE_SHF_DP_SECTION = 0x1000U,
914 SHF_MASKOS = 0x0ff00000,
916 // Bits indicating processor-specific flags.
917 SHF_MASKPROC = 0xf0000000,
919 // If an object file section does not have this flag set, then it may not hold
920 // more than 2GB and can be freely referred to in objects using smaller code
921 // models. Otherwise, only objects using larger code models can refer to them.
922 // For example, a medium code model object can refer to data in a section that
923 // sets this flag besides being able to refer to data in a section that does
924 // not set it; likewise, a small code model object can refer only to code in a
925 // section that does not set this flag.
926 SHF_X86_64_LARGE = 0x10000000
929 // Section Group Flags
932 GRP_MASKOS = 0x0ff00000,
933 GRP_MASKPROC = 0xf0000000
936 // Symbol table entries for ELF32.
938 Elf32_Word st_name; // Symbol name (index into string table)
939 Elf32_Addr st_value; // Value or address associated with the symbol
940 Elf32_Word st_size; // Size of the symbol
941 unsigned char st_info; // Symbol's type and binding attributes
942 unsigned char st_other; // Must be zero; reserved
943 Elf32_Half st_shndx; // Which section (header table index) it's defined in
945 // These accessors and mutators correspond to the ELF32_ST_BIND,
946 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
947 unsigned char getBinding() const { return st_info >> 4; }
948 unsigned char getType() const { return st_info & 0x0f; }
949 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
950 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
951 void setBindingAndType(unsigned char b, unsigned char t) {
952 st_info = (b << 4) + (t & 0x0f);
956 // Symbol table entries for ELF64.
958 Elf64_Word st_name; // Symbol name (index into string table)
959 unsigned char st_info; // Symbol's type and binding attributes
960 unsigned char st_other; // Must be zero; reserved
961 Elf64_Half st_shndx; // Which section (header table index) it's defined in
962 Elf64_Addr st_value; // Value or address associated with the symbol
963 Elf64_Xword st_size; // Size of the symbol
965 // These accessors and mutators are identical to those defined for ELF32
966 // symbol table entries.
967 unsigned char getBinding() const { return st_info >> 4; }
968 unsigned char getType() const { return st_info & 0x0f; }
969 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
970 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
971 void setBindingAndType(unsigned char b, unsigned char t) {
972 st_info = (b << 4) + (t & 0x0f);
976 // The size (in bytes) of symbol table entries.
978 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
979 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
984 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
985 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
986 STB_WEAK = 2, // Weak symbol, like global but lower-precedence
987 STB_LOOS = 10, // Lowest operating system-specific binding type
988 STB_HIOS = 12, // Highest operating system-specific binding type
989 STB_LOPROC = 13, // Lowest processor-specific binding type
990 STB_HIPROC = 15 // Highest processor-specific binding type
995 STT_NOTYPE = 0, // Symbol's type is not specified
996 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
997 STT_FUNC = 2, // Symbol is executable code (function, etc.)
998 STT_SECTION = 3, // Symbol refers to a section
999 STT_FILE = 4, // Local, absolute symbol that refers to a file
1000 STT_COMMON = 5, // An uninitialized common block
1001 STT_TLS = 6, // Thread local data object
1002 STT_LOOS = 7, // Lowest operating system-specific symbol type
1003 STT_HIOS = 8, // Highest operating system-specific symbol type
1004 STT_GNU_IFUNC = 10, // GNU indirect function
1005 STT_LOPROC = 13, // Lowest processor-specific symbol type
1006 STT_HIPROC = 15 // Highest processor-specific symbol type
1010 STV_DEFAULT = 0, // Visibility is specified by binding type
1011 STV_INTERNAL = 1, // Defined by processor supplements
1012 STV_HIDDEN = 2, // Not visible to other components
1013 STV_PROTECTED = 3 // Visible in other components but not preemptable
1016 // Relocation entry, without explicit addend.
1018 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1019 Elf32_Word r_info; // Symbol table index and type of relocation to apply
1021 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1022 // and ELF32_R_INFO macros defined in the ELF specification:
1023 Elf32_Word getSymbol() const { return (r_info >> 8); }
1024 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
1025 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1026 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1027 void setSymbolAndType(Elf32_Word s, unsigned char t) {
1028 r_info = (s << 8) + t;
1032 // Relocation entry with explicit addend.
1034 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1035 Elf32_Word r_info; // Symbol table index and type of relocation to apply
1036 Elf32_Sword r_addend; // Compute value for relocatable field by adding this
1038 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1039 // and ELF32_R_INFO macros defined in the ELF specification:
1040 Elf32_Word getSymbol() const { return (r_info >> 8); }
1041 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
1042 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1043 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1044 void setSymbolAndType(Elf32_Word s, unsigned char t) {
1045 r_info = (s << 8) + t;
1049 // Relocation entry, without explicit addend.
1051 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1052 Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1054 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1055 // and ELF64_R_INFO macros defined in the ELF specification:
1056 Elf64_Xword getSymbol() const { return (r_info >> 32); }
1057 unsigned char getType() const {
1058 return (unsigned char) (r_info & 0xffffffffL);
1060 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1061 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1062 void setSymbolAndType(Elf64_Xword s, unsigned char t) {
1063 r_info = (s << 32) + (t&0xffffffffL);
1067 // Relocation entry with explicit addend.
1069 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1070 Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1071 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
1073 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1074 // and ELF64_R_INFO macros defined in the ELF specification:
1075 Elf64_Xword getSymbol() const { return (r_info >> 32); }
1076 unsigned char getType() const {
1077 return (unsigned char) (r_info & 0xffffffffL);
1079 void setSymbol(Elf64_Xword s) { setSymbolAndType(s, getType()); }
1080 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1081 void setSymbolAndType(Elf64_Xword s, unsigned char t) {
1082 r_info = (s << 32) + (t&0xffffffffL);
1086 // Program header for ELF32.
1088 Elf32_Word p_type; // Type of segment
1089 Elf32_Off p_offset; // File offset where segment is located, in bytes
1090 Elf32_Addr p_vaddr; // Virtual address of beginning of segment
1091 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
1092 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
1093 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
1094 Elf32_Word p_flags; // Segment flags
1095 Elf32_Word p_align; // Segment alignment constraint
1098 // Program header for ELF64.
1100 Elf64_Word p_type; // Type of segment
1101 Elf64_Word p_flags; // Segment flags
1102 Elf64_Off p_offset; // File offset where segment is located, in bytes
1103 Elf64_Addr p_vaddr; // Virtual address of beginning of segment
1104 Elf64_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
1105 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
1106 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
1107 Elf64_Xword p_align; // Segment alignment constraint
1112 PT_NULL = 0, // Unused segment.
1113 PT_LOAD = 1, // Loadable segment.
1114 PT_DYNAMIC = 2, // Dynamic linking information.
1115 PT_INTERP = 3, // Interpreter pathname.
1116 PT_NOTE = 4, // Auxiliary information.
1117 PT_SHLIB = 5, // Reserved.
1118 PT_PHDR = 6, // The program header table itself.
1119 PT_TLS = 7, // The thread-local storage template.
1120 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
1122 // x86-64 program header types.
1123 // These all contain stack unwind tables.
1124 PT_GNU_EH_FRAME = 0x6474e550,
1125 PT_SUNW_EH_FRAME = 0x6474e550,
1126 PT_SUNW_UNWIND = 0x6464e550,
1128 PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
1129 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
1131 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
1132 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
1133 PT_HIPROC = 0x7fffffff // Highest processor-specific program hdr entry type.
1136 // Segment flag bits.
1138 PF_X = 1, // Execute
1141 PF_MASKOS = 0x0ff00000,// Bits for operating system-specific semantics.
1142 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1145 // Dynamic table entry for ELF32.
1148 Elf32_Sword d_tag; // Type of dynamic table entry.
1151 Elf32_Word d_val; // Integer value of entry.
1152 Elf32_Addr d_ptr; // Pointer value of entry.
1156 // Dynamic table entry for ELF64.
1159 Elf64_Sxword d_tag; // Type of dynamic table entry.
1162 Elf64_Xword d_val; // Integer value of entry.
1163 Elf64_Addr d_ptr; // Pointer value of entry.
1167 // Dynamic table entry tags.
1169 DT_NULL = 0, // Marks end of dynamic array.
1170 DT_NEEDED = 1, // String table offset of needed library.
1171 DT_PLTRELSZ = 2, // Size of relocation entries in PLT.
1172 DT_PLTGOT = 3, // Address associated with linkage table.
1173 DT_HASH = 4, // Address of symbolic hash table.
1174 DT_STRTAB = 5, // Address of dynamic string table.
1175 DT_SYMTAB = 6, // Address of dynamic symbol table.
1176 DT_RELA = 7, // Address of relocation table (Rela entries).
1177 DT_RELASZ = 8, // Size of Rela relocation table.
1178 DT_RELAENT = 9, // Size of a Rela relocation entry.
1179 DT_STRSZ = 10, // Total size of the string table.
1180 DT_SYMENT = 11, // Size of a symbol table entry.
1181 DT_INIT = 12, // Address of initialization function.
1182 DT_FINI = 13, // Address of termination function.
1183 DT_SONAME = 14, // String table offset of a shared objects name.
1184 DT_RPATH = 15, // String table offset of library search path.
1185 DT_SYMBOLIC = 16, // Changes symbol resolution algorithm.
1186 DT_REL = 17, // Address of relocation table (Rel entries).
1187 DT_RELSZ = 18, // Size of Rel relocation table.
1188 DT_RELENT = 19, // Size of a Rel relocation entry.
1189 DT_PLTREL = 20, // Type of relocation entry used for linking.
1190 DT_DEBUG = 21, // Reserved for debugger.
1191 DT_TEXTREL = 22, // Relocations exist for non-writable segments.
1192 DT_JMPREL = 23, // Address of relocations associated with PLT.
1193 DT_BIND_NOW = 24, // Process all relocations before execution.
1194 DT_INIT_ARRAY = 25, // Pointer to array of initialization functions.
1195 DT_FINI_ARRAY = 26, // Pointer to array of termination functions.
1196 DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY.
1197 DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY.
1198 DT_RUNPATH = 29, // String table offset of lib search path.
1199 DT_FLAGS = 30, // Flags.
1200 DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules
1201 // for the interpretation of the d_un union.
1203 DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions.
1204 DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array.
1206 DT_LOOS = 0x60000000, // Start of environment specific tags.
1207 DT_HIOS = 0x6FFFFFFF, // End of environment specific tags.
1208 DT_LOPROC = 0x70000000, // Start of processor specific tags.
1209 DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags.
1211 DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count.
1212 DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count.
1214 DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1.
1215 DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table.
1216 DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF.
1217 DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table.
1218 DT_VERNEEDNUM = 0X6FFFFFFF // The number of entries in DT_VERNEED.
1223 DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
1224 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
1225 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
1226 DF_BIND_NOW = 0x08, // Process all relocations on load.
1227 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
1230 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1232 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
1233 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
1234 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
1235 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
1236 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
1237 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
1238 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
1239 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
1240 DF_1_DIRECT = 0x00000100, // Direct binding enabled.
1241 DF_1_TRANS = 0x00000200,
1242 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
1243 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
1244 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
1245 DF_1_CONFALT = 0x00002000, // Configuration alternative created.
1246 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
1247 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1248 DF_1_DISPRELPND = 0x00010000 // Disp reloc applied at run-time.
1251 // ElfXX_VerDef structure version (GNU versioning)
1257 // VerDef Flags (ElfXX_VerDef::vd_flags)
1264 // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1266 VER_NDX_LOCAL = 0, // Unversioned local symbol
1267 VER_NDX_GLOBAL = 1, // Unversioned global symbol
1268 VERSYM_VERSION = 0x7fff, // Version Index mask
1269 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
1272 // ElfXX_VerNeed structure version (GNU versioning)
1275 VER_NEED_CURRENT = 1
1278 } // end namespace ELF
1280 } // end namespace llvm