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1 : //===- llvm/BinaryFormat/ELF.h - ELF constants and 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_BINARYFORMAT_ELF_H
21 : #define LLVM_BINARYFORMAT_ELF_H
22 :
23 : #include <cstdint>
24 : #include <cstring>
25 :
26 : namespace llvm {
27 : namespace ELF {
28 :
29 : using Elf32_Addr = uint32_t; // Program address
30 : using Elf32_Off = uint32_t; // File offset
31 : using Elf32_Half = uint16_t;
32 : using Elf32_Word = uint32_t;
33 : using Elf32_Sword = int32_t;
34 :
35 : using Elf64_Addr = uint64_t;
36 : using Elf64_Off = uint64_t;
37 : using Elf64_Half = uint16_t;
38 : using Elf64_Word = uint32_t;
39 : using Elf64_Sword = int32_t;
40 : using Elf64_Xword = uint64_t;
41 : using Elf64_Sxword = int64_t;
42 :
43 : // Object file magic string.
44 : static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'};
45 :
46 : // e_ident size and indices.
47 : enum {
48 : EI_MAG0 = 0, // File identification index.
49 : EI_MAG1 = 1, // File identification index.
50 : EI_MAG2 = 2, // File identification index.
51 : EI_MAG3 = 3, // File identification index.
52 : EI_CLASS = 4, // File class.
53 : EI_DATA = 5, // Data encoding.
54 : EI_VERSION = 6, // File version.
55 : EI_OSABI = 7, // OS/ABI identification.
56 : EI_ABIVERSION = 8, // ABI version.
57 : EI_PAD = 9, // Start of padding bytes.
58 : EI_NIDENT = 16 // Number of bytes in e_ident.
59 : };
60 :
61 : struct Elf32_Ehdr {
62 : unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
63 : Elf32_Half e_type; // Type of file (see ET_* below)
64 : Elf32_Half e_machine; // Required architecture for this file (see EM_*)
65 : Elf32_Word e_version; // Must be equal to 1
66 : Elf32_Addr e_entry; // Address to jump to in order to start program
67 : Elf32_Off e_phoff; // Program header table's file offset, in bytes
68 : Elf32_Off e_shoff; // Section header table's file offset, in bytes
69 : Elf32_Word e_flags; // Processor-specific flags
70 : Elf32_Half e_ehsize; // Size of ELF header, in bytes
71 : Elf32_Half e_phentsize; // Size of an entry in the program header table
72 : Elf32_Half e_phnum; // Number of entries in the program header table
73 : Elf32_Half e_shentsize; // Size of an entry in the section header table
74 : Elf32_Half e_shnum; // Number of entries in the section header table
75 : Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table
76 :
77 : bool checkMagic() const {
78 : return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
79 : }
80 :
81 : unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
82 : unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
83 : };
84 :
85 : // 64-bit ELF header. Fields are the same as for ELF32, but with different
86 : // types (see above).
87 : struct Elf64_Ehdr {
88 : unsigned char e_ident[EI_NIDENT];
89 : Elf64_Half e_type;
90 : Elf64_Half e_machine;
91 : Elf64_Word e_version;
92 : Elf64_Addr e_entry;
93 : Elf64_Off e_phoff;
94 : Elf64_Off e_shoff;
95 : Elf64_Word e_flags;
96 : Elf64_Half e_ehsize;
97 : Elf64_Half e_phentsize;
98 : Elf64_Half e_phnum;
99 : Elf64_Half e_shentsize;
100 : Elf64_Half e_shnum;
101 : Elf64_Half e_shstrndx;
102 :
103 : bool checkMagic() const {
104 : return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
105 : }
106 :
107 : unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
108 : unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
109 : };
110 :
111 : // File types
112 : enum {
113 : ET_NONE = 0, // No file type
114 : ET_REL = 1, // Relocatable file
115 : ET_EXEC = 2, // Executable file
116 : ET_DYN = 3, // Shared object file
117 : ET_CORE = 4, // Core file
118 : ET_LOPROC = 0xff00, // Beginning of processor-specific codes
119 : ET_HIPROC = 0xffff // Processor-specific
120 : };
121 :
122 : // Versioning
123 : enum { EV_NONE = 0, EV_CURRENT = 1 };
124 :
125 : // Machine architectures
126 : // See current registered ELF machine architectures at:
127 : // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html
128 : enum {
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_IAMCU = 6, // Intel MCU
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_HEXAGON = 164, // Qualcomm Hexagon 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_AARCH64 = 183, // ARM AArch64
277 : EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family
278 : EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller
279 : EM_TILE64 = 187, // Tilera TILE64 multicore architecture family
280 : EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family
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_BA1 = 201, // Beyond BA1 CPU architecture
293 : EM_BA2 = 202, // Beyond BA2 CPU architecture
294 : EM_XCORE = 203, // XMOS xCORE processor family
295 : EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family
296 : EM_INTEL205 = 205, // Reserved by Intel
297 : EM_INTEL206 = 206, // Reserved by Intel
298 : EM_INTEL207 = 207, // Reserved by Intel
299 : EM_INTEL208 = 208, // Reserved by Intel
300 : EM_INTEL209 = 209, // Reserved by Intel
301 : EM_KM32 = 210, // KM211 KM32 32-bit processor
302 : EM_KMX32 = 211, // KM211 KMX32 32-bit processor
303 : EM_KMX16 = 212, // KM211 KMX16 16-bit processor
304 : EM_KMX8 = 213, // KM211 KMX8 8-bit processor
305 : EM_KVARC = 214, // KM211 KVARC processor
306 : EM_CDP = 215, // Paneve CDP architecture family
307 : EM_COGE = 216, // Cognitive Smart Memory Processor
308 : EM_COOL = 217, // iCelero CoolEngine
309 : EM_NORC = 218, // Nanoradio Optimized RISC
310 : EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family
311 : EM_AMDGPU = 224, // AMD GPU architecture
312 : EM_RISCV = 243, // RISC-V
313 : EM_LANAI = 244, // Lanai 32-bit processor
314 : EM_BPF = 247, // Linux kernel bpf virtual machine
315 : };
316 :
317 : // Object file classes.
318 : enum {
319 : ELFCLASSNONE = 0,
320 : ELFCLASS32 = 1, // 32-bit object file
321 : ELFCLASS64 = 2 // 64-bit object file
322 : };
323 :
324 : // Object file byte orderings.
325 : enum {
326 : ELFDATANONE = 0, // Invalid data encoding.
327 : ELFDATA2LSB = 1, // Little-endian object file
328 : ELFDATA2MSB = 2 // Big-endian object file
329 : };
330 :
331 : // OS ABI identification.
332 : enum {
333 : ELFOSABI_NONE = 0, // UNIX System V ABI
334 : ELFOSABI_HPUX = 1, // HP-UX operating system
335 : ELFOSABI_NETBSD = 2, // NetBSD
336 : ELFOSABI_GNU = 3, // GNU/Linux
337 : ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU.
338 : ELFOSABI_HURD = 4, // GNU/Hurd
339 : ELFOSABI_SOLARIS = 6, // Solaris
340 : ELFOSABI_AIX = 7, // AIX
341 : ELFOSABI_IRIX = 8, // IRIX
342 : ELFOSABI_FREEBSD = 9, // FreeBSD
343 : ELFOSABI_TRU64 = 10, // TRU64 UNIX
344 : ELFOSABI_MODESTO = 11, // Novell Modesto
345 : ELFOSABI_OPENBSD = 12, // OpenBSD
346 : ELFOSABI_OPENVMS = 13, // OpenVMS
347 : ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel
348 : ELFOSABI_AROS = 15, // AROS
349 : ELFOSABI_FENIXOS = 16, // FenixOS
350 : ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI
351 : ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI
352 : ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime
353 : ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime
354 : ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime
355 : ELFOSABI_ARM = 97, // ARM
356 : ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
357 : ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
358 : ELFOSABI_STANDALONE = 255, // Standalone (embedded) application
359 : ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI
360 : };
361 :
362 : #define ELF_RELOC(name, value) name = value,
363 :
364 : // X86_64 relocations.
365 : enum {
366 : #include "ELFRelocs/x86_64.def"
367 : };
368 :
369 : // i386 relocations.
370 : enum {
371 : #include "ELFRelocs/i386.def"
372 : };
373 :
374 : // ELF Relocation types for PPC32
375 : enum {
376 : #include "ELFRelocs/PowerPC.def"
377 : };
378 :
379 : // Specific e_flags for PPC64
380 : enum {
381 : // e_flags bits specifying ABI:
382 : // 1 for original ABI using function descriptors,
383 : // 2 for revised ABI without function descriptors,
384 : // 0 for unspecified or not using any features affected by the differences.
385 : EF_PPC64_ABI = 3
386 : };
387 :
388 : // Special values for the st_other field in the symbol table entry for PPC64.
389 : enum {
390 : STO_PPC64_LOCAL_BIT = 5,
391 : STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT)
392 : };
393 : static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) {
394 0 : unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT;
395 117 : return ((1 << Val) >> 2) << 2;
396 : }
397 : static inline unsigned encodePPC64LocalEntryOffset(int64_t Offset) {
398 : unsigned Val =
399 117 : (Offset >= 4 * 4 ? (Offset >= 8 * 4 ? (Offset >= 16 * 4 ? 6 : 5) : 4)
400 : : (Offset >= 2 * 4 ? 3 : (Offset >= 1 * 4 ? 2 : 0)));
401 117 : return Val << STO_PPC64_LOCAL_BIT;
402 : }
403 :
404 : // ELF Relocation types for PPC64
405 : enum {
406 : #include "ELFRelocs/PowerPC64.def"
407 : };
408 :
409 : // ELF Relocation types for AArch64
410 : enum {
411 : #include "ELFRelocs/AArch64.def"
412 : };
413 :
414 : // ARM Specific e_flags
415 : enum : unsigned {
416 : EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5
417 : EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5
418 : EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5
419 : EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5
420 : EF_ARM_EABI_UNKNOWN = 0x00000000U,
421 : EF_ARM_EABI_VER1 = 0x01000000U,
422 : EF_ARM_EABI_VER2 = 0x02000000U,
423 : EF_ARM_EABI_VER3 = 0x03000000U,
424 : EF_ARM_EABI_VER4 = 0x04000000U,
425 : EF_ARM_EABI_VER5 = 0x05000000U,
426 : EF_ARM_EABIMASK = 0xFF000000U
427 : };
428 :
429 : // ELF Relocation types for ARM
430 : enum {
431 : #include "ELFRelocs/ARM.def"
432 : };
433 :
434 : // ARC Specific e_flags
435 : enum : unsigned {
436 : EF_ARC_MACH_MSK = 0x000000ff,
437 : EF_ARC_OSABI_MSK = 0x00000f00,
438 : E_ARC_MACH_ARC600 = 0x00000002,
439 : E_ARC_MACH_ARC601 = 0x00000004,
440 : E_ARC_MACH_ARC700 = 0x00000003,
441 : EF_ARC_CPU_ARCV2EM = 0x00000005,
442 : EF_ARC_CPU_ARCV2HS = 0x00000006,
443 : E_ARC_OSABI_ORIG = 0x00000000,
444 : E_ARC_OSABI_V2 = 0x00000200,
445 : E_ARC_OSABI_V3 = 0x00000300,
446 : E_ARC_OSABI_V4 = 0x00000400,
447 : EF_ARC_PIC = 0x00000100
448 : };
449 :
450 : // ELF Relocation types for ARC
451 : enum {
452 : #include "ELFRelocs/ARC.def"
453 : };
454 :
455 : // AVR specific e_flags
456 : enum : unsigned {
457 : EF_AVR_ARCH_AVR1 = 1,
458 : EF_AVR_ARCH_AVR2 = 2,
459 : EF_AVR_ARCH_AVR25 = 25,
460 : EF_AVR_ARCH_AVR3 = 3,
461 : EF_AVR_ARCH_AVR31 = 31,
462 : EF_AVR_ARCH_AVR35 = 35,
463 : EF_AVR_ARCH_AVR4 = 4,
464 : EF_AVR_ARCH_AVR5 = 5,
465 : EF_AVR_ARCH_AVR51 = 51,
466 : EF_AVR_ARCH_AVR6 = 6,
467 : EF_AVR_ARCH_AVRTINY = 100,
468 : EF_AVR_ARCH_XMEGA1 = 101,
469 : EF_AVR_ARCH_XMEGA2 = 102,
470 : EF_AVR_ARCH_XMEGA3 = 103,
471 : EF_AVR_ARCH_XMEGA4 = 104,
472 : EF_AVR_ARCH_XMEGA5 = 105,
473 : EF_AVR_ARCH_XMEGA6 = 106,
474 : EF_AVR_ARCH_XMEGA7 = 107
475 : };
476 :
477 : // ELF Relocation types for AVR
478 : enum {
479 : #include "ELFRelocs/AVR.def"
480 : };
481 :
482 : // Mips Specific e_flags
483 : enum : unsigned {
484 : EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
485 : EF_MIPS_PIC = 0x00000002, // Position independent code
486 : EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
487 : EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI
488 : EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine
489 : // in 32-bit mode
490 : EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine
491 : // but uses 64-bit FP registers
492 : EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding
493 :
494 : // ABI flags
495 : EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
496 : EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture.
497 : EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode.
498 : EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode.
499 : EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant.
500 :
501 : // MIPS machine variant
502 : EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation.
503 : EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900
504 : EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010
505 : EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100
506 : EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650
507 : EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120
508 : EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181
509 : EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1
510 : EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon
511 : EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr
512 : EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2
513 : EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3
514 : EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400
515 : EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900
516 : EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500
517 : EF_MIPS_MACH_9000 = 0x00990000, // Unknown
518 : EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E
519 : EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F
520 : EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A
521 : EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask
522 :
523 : // ARCH_ASE
524 : EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
525 : EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions
526 : EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions
527 : EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags
528 :
529 : // ARCH
530 : EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
531 : EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
532 : EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
533 : EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
534 : EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
535 : EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
536 : EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
537 : EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5
538 : EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5
539 : EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6
540 : EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6
541 : EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
542 : };
543 :
544 : // ELF Relocation types for Mips
545 : enum {
546 : #include "ELFRelocs/Mips.def"
547 : };
548 :
549 : // Special values for the st_other field in the symbol table entry for MIPS.
550 : enum {
551 : STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional
552 : STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record
553 : STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC
554 : STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips
555 : STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16
556 : };
557 :
558 : // .MIPS.options section descriptor kinds
559 : enum {
560 : ODK_NULL = 0, // Undefined
561 : ODK_REGINFO = 1, // Register usage information
562 : ODK_EXCEPTIONS = 2, // Exception processing options
563 : ODK_PAD = 3, // Section padding options
564 : ODK_HWPATCH = 4, // Hardware patches applied
565 : ODK_FILL = 5, // Linker fill value
566 : ODK_TAGS = 6, // Space for tool identification
567 : ODK_HWAND = 7, // Hardware AND patches applied
568 : ODK_HWOR = 8, // Hardware OR patches applied
569 : ODK_GP_GROUP = 9, // GP group to use for text/data sections
570 : ODK_IDENT = 10, // ID information
571 : ODK_PAGESIZE = 11 // Page size information
572 : };
573 :
574 : // Hexagon-specific e_flags
575 : enum {
576 : // Object processor version flags, bits[11:0]
577 : EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2
578 : EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3
579 : EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4
580 : EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5
581 : EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55
582 : EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60
583 : EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62
584 : EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65
585 :
586 : // Highest ISA version flags
587 : EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0]
588 : // of e_flags
589 : EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA
590 : EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA
591 : EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA
592 : EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA
593 : EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA
594 : EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA
595 : EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA
596 : EF_HEXAGON_ISA_V65 = 0x00000065, // Hexagon V65 ISA
597 : };
598 :
599 : // Hexagon-specific section indexes for common small data
600 : enum {
601 : SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes
602 : SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access
603 : SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access
604 : SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access
605 : SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access
606 : };
607 :
608 : // ELF Relocation types for Hexagon
609 : enum {
610 : #include "ELFRelocs/Hexagon.def"
611 : };
612 :
613 : // ELF Relocation type for Lanai.
614 : enum {
615 : #include "ELFRelocs/Lanai.def"
616 : };
617 :
618 : // RISCV Specific e_flags
619 : enum : unsigned {
620 : EF_RISCV_RVC = 0x0001,
621 : EF_RISCV_FLOAT_ABI = 0x0006,
622 : EF_RISCV_FLOAT_ABI_SOFT = 0x0000,
623 : EF_RISCV_FLOAT_ABI_SINGLE = 0x0002,
624 : EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004,
625 : EF_RISCV_FLOAT_ABI_QUAD = 0x0006,
626 : EF_RISCV_RVE = 0x0008
627 : };
628 :
629 : // ELF Relocation types for RISC-V
630 : enum {
631 : #include "ELFRelocs/RISCV.def"
632 : };
633 :
634 : // ELF Relocation types for S390/zSeries
635 : enum {
636 : #include "ELFRelocs/SystemZ.def"
637 : };
638 :
639 : // ELF Relocation type for Sparc.
640 : enum {
641 : #include "ELFRelocs/Sparc.def"
642 : };
643 :
644 : // AMDGPU specific e_flags.
645 : enum : unsigned {
646 : // Processor selection mask for EF_AMDGPU_MACH_* values.
647 : EF_AMDGPU_MACH = 0x0ff,
648 :
649 : // Not specified processor.
650 : EF_AMDGPU_MACH_NONE = 0x000,
651 :
652 : // R600-based processors.
653 :
654 : // Radeon HD 2000/3000 Series (R600).
655 : EF_AMDGPU_MACH_R600_R600 = 0x001,
656 : EF_AMDGPU_MACH_R600_R630 = 0x002,
657 : EF_AMDGPU_MACH_R600_RS880 = 0x003,
658 : EF_AMDGPU_MACH_R600_RV670 = 0x004,
659 : // Radeon HD 4000 Series (R700).
660 : EF_AMDGPU_MACH_R600_RV710 = 0x005,
661 : EF_AMDGPU_MACH_R600_RV730 = 0x006,
662 : EF_AMDGPU_MACH_R600_RV770 = 0x007,
663 : // Radeon HD 5000 Series (Evergreen).
664 : EF_AMDGPU_MACH_R600_CEDAR = 0x008,
665 : EF_AMDGPU_MACH_R600_CYPRESS = 0x009,
666 : EF_AMDGPU_MACH_R600_JUNIPER = 0x00a,
667 : EF_AMDGPU_MACH_R600_REDWOOD = 0x00b,
668 : EF_AMDGPU_MACH_R600_SUMO = 0x00c,
669 : // Radeon HD 6000 Series (Northern Islands).
670 : EF_AMDGPU_MACH_R600_BARTS = 0x00d,
671 : EF_AMDGPU_MACH_R600_CAICOS = 0x00e,
672 : EF_AMDGPU_MACH_R600_CAYMAN = 0x00f,
673 : EF_AMDGPU_MACH_R600_TURKS = 0x010,
674 :
675 : // Reserved for R600-based processors.
676 : EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011,
677 : EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f,
678 :
679 : // First/last R600-based processors.
680 : EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600,
681 : EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS,
682 :
683 : // AMDGCN-based processors.
684 :
685 : // AMDGCN GFX6.
686 : EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020,
687 : EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021,
688 : // AMDGCN GFX7.
689 : EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022,
690 : EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023,
691 : EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024,
692 : EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025,
693 : EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026,
694 : // AMDGCN GFX8.
695 : EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028,
696 : EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029,
697 : EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a,
698 : EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b,
699 : // AMDGCN GFX9.
700 : EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c,
701 : EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d,
702 : EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e,
703 : EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f,
704 :
705 : // Reserved for AMDGCN-based processors.
706 : EF_AMDGPU_MACH_AMDGCN_RESERVED0 = 0x027,
707 : EF_AMDGPU_MACH_AMDGCN_RESERVED1 = 0x030,
708 :
709 : // First/last AMDGCN-based processors.
710 : EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600,
711 : EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX906,
712 :
713 : // Indicates if the xnack target feature is enabled for all code contained in
714 : // the object.
715 : EF_AMDGPU_XNACK = 0x100,
716 : };
717 :
718 : // ELF Relocation types for AMDGPU
719 : enum {
720 : #include "ELFRelocs/AMDGPU.def"
721 : };
722 :
723 : // ELF Relocation types for BPF
724 : enum {
725 : #include "ELFRelocs/BPF.def"
726 : };
727 :
728 : #undef ELF_RELOC
729 :
730 : // Section header.
731 : struct Elf32_Shdr {
732 : Elf32_Word sh_name; // Section name (index into string table)
733 : Elf32_Word sh_type; // Section type (SHT_*)
734 : Elf32_Word sh_flags; // Section flags (SHF_*)
735 : Elf32_Addr sh_addr; // Address where section is to be loaded
736 : Elf32_Off sh_offset; // File offset of section data, in bytes
737 : Elf32_Word sh_size; // Size of section, in bytes
738 : Elf32_Word sh_link; // Section type-specific header table index link
739 : Elf32_Word sh_info; // Section type-specific extra information
740 : Elf32_Word sh_addralign; // Section address alignment
741 : Elf32_Word sh_entsize; // Size of records contained within the section
742 : };
743 :
744 : // Section header for ELF64 - same fields as ELF32, different types.
745 : struct Elf64_Shdr {
746 : Elf64_Word sh_name;
747 : Elf64_Word sh_type;
748 : Elf64_Xword sh_flags;
749 : Elf64_Addr sh_addr;
750 : Elf64_Off sh_offset;
751 : Elf64_Xword sh_size;
752 : Elf64_Word sh_link;
753 : Elf64_Word sh_info;
754 : Elf64_Xword sh_addralign;
755 : Elf64_Xword sh_entsize;
756 : };
757 :
758 : // Special section indices.
759 : enum {
760 : SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
761 : SHN_LORESERVE = 0xff00, // Lowest reserved index
762 : SHN_LOPROC = 0xff00, // Lowest processor-specific index
763 : SHN_HIPROC = 0xff1f, // Highest processor-specific index
764 : SHN_LOOS = 0xff20, // Lowest operating system-specific index
765 : SHN_HIOS = 0xff3f, // Highest operating system-specific index
766 : SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
767 : SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
768 : SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
769 : SHN_HIRESERVE = 0xffff // Highest reserved index
770 : };
771 :
772 : // Section types.
773 : enum : unsigned {
774 : SHT_NULL = 0, // No associated section (inactive entry).
775 : SHT_PROGBITS = 1, // Program-defined contents.
776 : SHT_SYMTAB = 2, // Symbol table.
777 : SHT_STRTAB = 3, // String table.
778 : SHT_RELA = 4, // Relocation entries; explicit addends.
779 : SHT_HASH = 5, // Symbol hash table.
780 : SHT_DYNAMIC = 6, // Information for dynamic linking.
781 : SHT_NOTE = 7, // Information about the file.
782 : SHT_NOBITS = 8, // Data occupies no space in the file.
783 : SHT_REL = 9, // Relocation entries; no explicit addends.
784 : SHT_SHLIB = 10, // Reserved.
785 : SHT_DYNSYM = 11, // Symbol table.
786 : SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
787 : SHT_FINI_ARRAY = 15, // Pointers to termination functions.
788 : SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
789 : SHT_GROUP = 17, // Section group.
790 : SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
791 : // Experimental support for SHT_RELR sections. For details, see proposal
792 : // at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
793 : SHT_RELR = 19, // Relocation entries; only offsets.
794 : SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
795 : // Android packed relocation section types.
796 : // https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37
797 : SHT_ANDROID_REL = 0x60000001,
798 : SHT_ANDROID_RELA = 0x60000002,
799 : SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table.
800 : SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options.
801 : SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c02, // LLVM Call Graph Profile.
802 : SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols
803 : // for safe ICF.
804 : // Android's experimental support for SHT_RELR sections.
805 : // https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512
806 : SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets.
807 : SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes.
808 : SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
809 : SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
810 : SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
811 : SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
812 : SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
813 : SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type.
814 : // Fixme: All this is duplicated in MCSectionELF. Why??
815 : // Exception Index table
816 : SHT_ARM_EXIDX = 0x70000001U,
817 : // BPABI DLL dynamic linking pre-emption map
818 : SHT_ARM_PREEMPTMAP = 0x70000002U,
819 : // Object file compatibility attributes
820 : SHT_ARM_ATTRIBUTES = 0x70000003U,
821 : SHT_ARM_DEBUGOVERLAY = 0x70000004U,
822 : SHT_ARM_OVERLAYSECTION = 0x70000005U,
823 : SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in
824 : // this section based on their sizes
825 : SHT_X86_64_UNWIND = 0x70000001, // Unwind information
826 :
827 : SHT_MIPS_REGINFO = 0x70000006, // Register usage information
828 : SHT_MIPS_OPTIONS = 0x7000000d, // General options
829 : SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section.
830 : SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information.
831 :
832 : SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type.
833 : SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
834 : SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
835 : };
836 :
837 : // Section flags.
838 : enum : unsigned {
839 : // Section data should be writable during execution.
840 : SHF_WRITE = 0x1,
841 :
842 : // Section occupies memory during program execution.
843 : SHF_ALLOC = 0x2,
844 :
845 : // Section contains executable machine instructions.
846 : SHF_EXECINSTR = 0x4,
847 :
848 : // The data in this section may be merged.
849 : SHF_MERGE = 0x10,
850 :
851 : // The data in this section is null-terminated strings.
852 : SHF_STRINGS = 0x20,
853 :
854 : // A field in this section holds a section header table index.
855 : SHF_INFO_LINK = 0x40U,
856 :
857 : // Adds special ordering requirements for link editors.
858 : SHF_LINK_ORDER = 0x80U,
859 :
860 : // This section requires special OS-specific processing to avoid incorrect
861 : // behavior.
862 : SHF_OS_NONCONFORMING = 0x100U,
863 :
864 : // This section is a member of a section group.
865 : SHF_GROUP = 0x200U,
866 :
867 : // This section holds Thread-Local Storage.
868 : SHF_TLS = 0x400U,
869 :
870 : // Identifies a section containing compressed data.
871 : SHF_COMPRESSED = 0x800U,
872 :
873 : // This section is excluded from the final executable or shared library.
874 : SHF_EXCLUDE = 0x80000000U,
875 :
876 : // Start of target-specific flags.
877 :
878 : SHF_MASKOS = 0x0ff00000,
879 :
880 : // Bits indicating processor-specific flags.
881 : SHF_MASKPROC = 0xf0000000,
882 :
883 : /// All sections with the "d" flag are grouped together by the linker to form
884 : /// the data section and the dp register is set to the start of the section by
885 : /// the boot code.
886 : XCORE_SHF_DP_SECTION = 0x10000000,
887 :
888 : /// All sections with the "c" flag are grouped together by the linker to form
889 : /// the constant pool and the cp register is set to the start of the constant
890 : /// pool by the boot code.
891 : XCORE_SHF_CP_SECTION = 0x20000000,
892 :
893 : // If an object file section does not have this flag set, then it may not hold
894 : // more than 2GB and can be freely referred to in objects using smaller code
895 : // models. Otherwise, only objects using larger code models can refer to them.
896 : // For example, a medium code model object can refer to data in a section that
897 : // sets this flag besides being able to refer to data in a section that does
898 : // not set it; likewise, a small code model object can refer only to code in a
899 : // section that does not set this flag.
900 : SHF_X86_64_LARGE = 0x10000000,
901 :
902 : // All sections with the GPREL flag are grouped into a global data area
903 : // for faster accesses
904 : SHF_HEX_GPREL = 0x10000000,
905 :
906 : // Section contains text/data which may be replicated in other sections.
907 : // Linker must retain only one copy.
908 : SHF_MIPS_NODUPES = 0x01000000,
909 :
910 : // Linker must generate implicit hidden weak names.
911 : SHF_MIPS_NAMES = 0x02000000,
912 :
913 : // Section data local to process.
914 : SHF_MIPS_LOCAL = 0x04000000,
915 :
916 : // Do not strip this section.
917 : SHF_MIPS_NOSTRIP = 0x08000000,
918 :
919 : // Section must be part of global data area.
920 : SHF_MIPS_GPREL = 0x10000000,
921 :
922 : // This section should be merged.
923 : SHF_MIPS_MERGE = 0x20000000,
924 :
925 : // Address size to be inferred from section entry size.
926 : SHF_MIPS_ADDR = 0x40000000,
927 :
928 : // Section data is string data by default.
929 : SHF_MIPS_STRING = 0x80000000,
930 :
931 : // Make code section unreadable when in execute-only mode
932 : SHF_ARM_PURECODE = 0x20000000
933 : };
934 :
935 : // Section Group Flags
936 : enum : unsigned {
937 : GRP_COMDAT = 0x1,
938 : GRP_MASKOS = 0x0ff00000,
939 : GRP_MASKPROC = 0xf0000000
940 : };
941 :
942 : // Symbol table entries for ELF32.
943 : struct Elf32_Sym {
944 : Elf32_Word st_name; // Symbol name (index into string table)
945 : Elf32_Addr st_value; // Value or address associated with the symbol
946 : Elf32_Word st_size; // Size of the symbol
947 : unsigned char st_info; // Symbol's type and binding attributes
948 : unsigned char st_other; // Must be zero; reserved
949 : Elf32_Half st_shndx; // Which section (header table index) it's defined in
950 :
951 : // These accessors and mutators correspond to the ELF32_ST_BIND,
952 : // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
953 : unsigned char getBinding() const { return st_info >> 4; }
954 : unsigned char getType() const { return st_info & 0x0f; }
955 : void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
956 : void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
957 : void setBindingAndType(unsigned char b, unsigned char t) {
958 : st_info = (b << 4) + (t & 0x0f);
959 : }
960 : };
961 :
962 : // Symbol table entries for ELF64.
963 : struct Elf64_Sym {
964 : Elf64_Word st_name; // Symbol name (index into string table)
965 : unsigned char st_info; // Symbol's type and binding attributes
966 : unsigned char st_other; // Must be zero; reserved
967 : Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
968 : Elf64_Addr st_value; // Value or address associated with the symbol
969 : Elf64_Xword st_size; // Size of the symbol
970 :
971 : // These accessors and mutators are identical to those defined for ELF32
972 : // symbol table entries.
973 : unsigned char getBinding() const { return st_info >> 4; }
974 : unsigned char getType() const { return st_info & 0x0f; }
975 : void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
976 : void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
977 : void setBindingAndType(unsigned char b, unsigned char t) {
978 : st_info = (b << 4) + (t & 0x0f);
979 : }
980 : };
981 :
982 : // The size (in bytes) of symbol table entries.
983 : enum {
984 : SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
985 : SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
986 : };
987 :
988 : // Symbol bindings.
989 : enum {
990 : STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
991 : STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
992 : STB_WEAK = 2, // Weak symbol, like global but lower-precedence
993 : STB_GNU_UNIQUE = 10,
994 : STB_LOOS = 10, // Lowest operating system-specific binding type
995 : STB_HIOS = 12, // Highest operating system-specific binding type
996 : STB_LOPROC = 13, // Lowest processor-specific binding type
997 : STB_HIPROC = 15 // Highest processor-specific binding type
998 : };
999 :
1000 : // Symbol types.
1001 : enum {
1002 : STT_NOTYPE = 0, // Symbol's type is not specified
1003 : STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
1004 : STT_FUNC = 2, // Symbol is executable code (function, etc.)
1005 : STT_SECTION = 3, // Symbol refers to a section
1006 : STT_FILE = 4, // Local, absolute symbol that refers to a file
1007 : STT_COMMON = 5, // An uninitialized common block
1008 : STT_TLS = 6, // Thread local data object
1009 : STT_GNU_IFUNC = 10, // GNU indirect function
1010 : STT_LOOS = 10, // Lowest operating system-specific symbol type
1011 : STT_HIOS = 12, // Highest operating system-specific symbol type
1012 : STT_LOPROC = 13, // Lowest processor-specific symbol type
1013 : STT_HIPROC = 15, // Highest processor-specific symbol type
1014 :
1015 : // AMDGPU symbol types
1016 : STT_AMDGPU_HSA_KERNEL = 10
1017 : };
1018 :
1019 : enum {
1020 : STV_DEFAULT = 0, // Visibility is specified by binding type
1021 : STV_INTERNAL = 1, // Defined by processor supplements
1022 : STV_HIDDEN = 2, // Not visible to other components
1023 : STV_PROTECTED = 3 // Visible in other components but not preemptable
1024 : };
1025 :
1026 : // Symbol number.
1027 : enum { STN_UNDEF = 0 };
1028 :
1029 : // Special relocation symbols used in the MIPS64 ELF relocation entries
1030 : enum {
1031 : RSS_UNDEF = 0, // None
1032 : RSS_GP = 1, // Value of gp
1033 : RSS_GP0 = 2, // Value of gp used to create object being relocated
1034 : RSS_LOC = 3 // Address of location being relocated
1035 : };
1036 :
1037 : // Relocation entry, without explicit addend.
1038 : struct Elf32_Rel {
1039 : Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1040 : Elf32_Word r_info; // Symbol table index and type of relocation to apply
1041 :
1042 : // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1043 : // and ELF32_R_INFO macros defined in the ELF specification:
1044 : Elf32_Word getSymbol() const { return (r_info >> 8); }
1045 : unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
1046 : void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1047 : void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1048 : void setSymbolAndType(Elf32_Word s, unsigned char t) {
1049 : r_info = (s << 8) + t;
1050 : }
1051 : };
1052 :
1053 : // Relocation entry with explicit addend.
1054 : struct Elf32_Rela {
1055 : Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1056 : Elf32_Word r_info; // Symbol table index and type of relocation to apply
1057 : Elf32_Sword r_addend; // Compute value for relocatable field by adding this
1058 :
1059 : // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1060 : // and ELF32_R_INFO macros defined in the ELF specification:
1061 : Elf32_Word getSymbol() const { return (r_info >> 8); }
1062 : unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
1063 : void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1064 : void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1065 : void setSymbolAndType(Elf32_Word s, unsigned char t) {
1066 796490 : r_info = (s << 8) + t;
1067 : }
1068 : };
1069 :
1070 : // Relocation entry without explicit addend or info (relative relocations only).
1071 : typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations
1072 :
1073 : // Relocation entry, without explicit addend.
1074 : struct Elf64_Rel {
1075 : Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1076 : Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1077 :
1078 : // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1079 : // and ELF64_R_INFO macros defined in the ELF specification:
1080 : Elf64_Word getSymbol() const { return (r_info >> 32); }
1081 : Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
1082 : void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
1083 : void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
1084 : void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1085 : r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
1086 : }
1087 : };
1088 :
1089 : // Relocation entry with explicit addend.
1090 : struct Elf64_Rela {
1091 : Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1092 : Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1093 : Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
1094 :
1095 : // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1096 : // and ELF64_R_INFO macros defined in the ELF specification:
1097 : Elf64_Word getSymbol() const { return (r_info >> 32); }
1098 : Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
1099 : void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
1100 : void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
1101 0 : void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1102 4261577 : r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
1103 0 : }
1104 : };
1105 :
1106 : // Relocation entry without explicit addend or info (relative relocations only).
1107 : typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations
1108 :
1109 : // Program header for ELF32.
1110 : struct Elf32_Phdr {
1111 : Elf32_Word p_type; // Type of segment
1112 : Elf32_Off p_offset; // File offset where segment is located, in bytes
1113 : Elf32_Addr p_vaddr; // Virtual address of beginning of segment
1114 : Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
1115 : Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
1116 : Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
1117 : Elf32_Word p_flags; // Segment flags
1118 : Elf32_Word p_align; // Segment alignment constraint
1119 : };
1120 :
1121 : // Program header for ELF64.
1122 : struct Elf64_Phdr {
1123 : Elf64_Word p_type; // Type of segment
1124 : Elf64_Word p_flags; // Segment flags
1125 : Elf64_Off p_offset; // File offset where segment is located, in bytes
1126 : Elf64_Addr p_vaddr; // Virtual address of beginning of segment
1127 : Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific)
1128 : Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
1129 : Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
1130 : Elf64_Xword p_align; // Segment alignment constraint
1131 : };
1132 :
1133 : // Segment types.
1134 : enum {
1135 : PT_NULL = 0, // Unused segment.
1136 : PT_LOAD = 1, // Loadable segment.
1137 : PT_DYNAMIC = 2, // Dynamic linking information.
1138 : PT_INTERP = 3, // Interpreter pathname.
1139 : PT_NOTE = 4, // Auxiliary information.
1140 : PT_SHLIB = 5, // Reserved.
1141 : PT_PHDR = 6, // The program header table itself.
1142 : PT_TLS = 7, // The thread-local storage template.
1143 : PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
1144 : PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
1145 : PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
1146 : PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type.
1147 :
1148 : // x86-64 program header types.
1149 : // These all contain stack unwind tables.
1150 : PT_GNU_EH_FRAME = 0x6474e550,
1151 : PT_SUNW_EH_FRAME = 0x6474e550,
1152 : PT_SUNW_UNWIND = 0x6464e550,
1153 :
1154 : PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
1155 : PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
1156 :
1157 : PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data.
1158 : PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations.
1159 : PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments.
1160 :
1161 : // ARM program header types.
1162 : PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
1163 : // These all contain stack unwind tables.
1164 : PT_ARM_EXIDX = 0x70000001,
1165 : PT_ARM_UNWIND = 0x70000001,
1166 :
1167 : // MIPS program header types.
1168 : PT_MIPS_REGINFO = 0x70000000, // Register usage information.
1169 : PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table.
1170 : PT_MIPS_OPTIONS = 0x70000002, // Options segment.
1171 : PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment.
1172 : };
1173 :
1174 : // Segment flag bits.
1175 : enum : unsigned {
1176 : PF_X = 1, // Execute
1177 : PF_W = 2, // Write
1178 : PF_R = 4, // Read
1179 : PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics.
1180 : PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1181 : };
1182 :
1183 : // Dynamic table entry for ELF32.
1184 : struct Elf32_Dyn {
1185 : Elf32_Sword d_tag; // Type of dynamic table entry.
1186 : union {
1187 : Elf32_Word d_val; // Integer value of entry.
1188 : Elf32_Addr d_ptr; // Pointer value of entry.
1189 : } d_un;
1190 : };
1191 :
1192 : // Dynamic table entry for ELF64.
1193 : struct Elf64_Dyn {
1194 : Elf64_Sxword d_tag; // Type of dynamic table entry.
1195 : union {
1196 : Elf64_Xword d_val; // Integer value of entry.
1197 : Elf64_Addr d_ptr; // Pointer value of entry.
1198 : } d_un;
1199 : };
1200 :
1201 : // Dynamic table entry tags.
1202 : enum {
1203 : #define DYNAMIC_TAG(name, value) DT_##name = value,
1204 : #include "DynamicTags.def"
1205 : #undef DYNAMIC_TAG
1206 : };
1207 :
1208 : // DT_FLAGS values.
1209 : enum {
1210 : DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
1211 : DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
1212 : DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
1213 : DF_BIND_NOW = 0x08, // Process all relocations on load.
1214 : DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
1215 : };
1216 :
1217 : // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1218 : enum {
1219 : DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
1220 : DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
1221 : DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
1222 : DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
1223 : DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
1224 : DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
1225 : DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
1226 : DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
1227 : DF_1_DIRECT = 0x00000100, // Direct binding enabled.
1228 : DF_1_TRANS = 0x00000200,
1229 : DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
1230 : DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
1231 : DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
1232 : DF_1_CONFALT = 0x00002000, // Configuration alternative created.
1233 : DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
1234 : DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1235 : DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time.
1236 : DF_1_NODIRECT = 0x00020000, // Object has no-direct binding.
1237 : DF_1_IGNMULDEF = 0x00040000,
1238 : DF_1_NOKSYMS = 0x00080000,
1239 : DF_1_NOHDR = 0x00100000,
1240 : DF_1_EDITED = 0x00200000, // Object is modified after built.
1241 : DF_1_NORELOC = 0x00400000,
1242 : DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers.
1243 : DF_1_GLOBAUDIT = 0x01000000, // Global auditing required.
1244 : DF_1_SINGLETON = 0x02000000 // Singleton symbols are used.
1245 : };
1246 :
1247 : // DT_MIPS_FLAGS values.
1248 : enum {
1249 : RHF_NONE = 0x00000000, // No flags.
1250 : RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers.
1251 : RHF_NOTPOT = 0x00000002, // Hash size is not a power of two.
1252 : RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH.
1253 : RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated.
1254 : RHF_SGI_ONLY = 0x00000010, // SGI specific features.
1255 : RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish
1256 : // executing before any non-init
1257 : // code in DSO is called.
1258 : RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code.
1259 : RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start
1260 : // executing before any non-init
1261 : // code in DSO is called.
1262 : RHF_PIXIE = 0x00000100, // Generated by pixie.
1263 : RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default.
1264 : RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted
1265 : RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted
1266 : RHF_CORD = 0x00001000, // Generated by cord.
1267 : RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved
1268 : // undef symbols.
1269 : RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order.
1270 : };
1271 :
1272 : // ElfXX_VerDef structure version (GNU versioning)
1273 : enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 };
1274 :
1275 : // VerDef Flags (ElfXX_VerDef::vd_flags)
1276 : enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 };
1277 :
1278 : // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1279 : enum {
1280 : VER_NDX_LOCAL = 0, // Unversioned local symbol
1281 : VER_NDX_GLOBAL = 1, // Unversioned global symbol
1282 : VERSYM_VERSION = 0x7fff, // Version Index mask
1283 : VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
1284 : };
1285 :
1286 : // ElfXX_VerNeed structure version (GNU versioning)
1287 : enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 };
1288 :
1289 : // SHT_NOTE section types
1290 : enum {
1291 : NT_FREEBSD_THRMISC = 7,
1292 : NT_FREEBSD_PROCSTAT_PROC = 8,
1293 : NT_FREEBSD_PROCSTAT_FILES = 9,
1294 : NT_FREEBSD_PROCSTAT_VMMAP = 10,
1295 : NT_FREEBSD_PROCSTAT_GROUPS = 11,
1296 : NT_FREEBSD_PROCSTAT_UMASK = 12,
1297 : NT_FREEBSD_PROCSTAT_RLIMIT = 13,
1298 : NT_FREEBSD_PROCSTAT_OSREL = 14,
1299 : NT_FREEBSD_PROCSTAT_PSSTRINGS = 15,
1300 : NT_FREEBSD_PROCSTAT_AUXV = 16,
1301 : };
1302 :
1303 : enum {
1304 : NT_GNU_ABI_TAG = 1,
1305 : NT_GNU_HWCAP = 2,
1306 : NT_GNU_BUILD_ID = 3,
1307 : NT_GNU_GOLD_VERSION = 4,
1308 : NT_GNU_PROPERTY_TYPE_0 = 5,
1309 : };
1310 :
1311 : // Property types used in GNU_PROPERTY_TYPE_0 notes.
1312 : enum : unsigned {
1313 : GNU_PROPERTY_STACK_SIZE = 1,
1314 : GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2,
1315 : GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002
1316 : };
1317 :
1318 : // CET properties
1319 : enum {
1320 : GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0,
1321 : GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1
1322 : };
1323 :
1324 : // AMDGPU specific notes.
1325 : enum {
1326 : // Note types with values between 0 and 9 (inclusive) are reserved.
1327 : NT_AMD_AMDGPU_HSA_METADATA = 10,
1328 : NT_AMD_AMDGPU_ISA = 11,
1329 : NT_AMD_AMDGPU_PAL_METADATA = 12
1330 : };
1331 :
1332 : enum {
1333 : GNU_ABI_TAG_LINUX = 0,
1334 : GNU_ABI_TAG_HURD = 1,
1335 : GNU_ABI_TAG_SOLARIS = 2,
1336 : GNU_ABI_TAG_FREEBSD = 3,
1337 : GNU_ABI_TAG_NETBSD = 4,
1338 : GNU_ABI_TAG_SYLLABLE = 5,
1339 : GNU_ABI_TAG_NACL = 6,
1340 : };
1341 :
1342 : // Android packed relocation group flags.
1343 : enum {
1344 : RELOCATION_GROUPED_BY_INFO_FLAG = 1,
1345 : RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2,
1346 : RELOCATION_GROUPED_BY_ADDEND_FLAG = 4,
1347 : RELOCATION_GROUP_HAS_ADDEND_FLAG = 8,
1348 : };
1349 :
1350 : // Compressed section header for ELF32.
1351 : struct Elf32_Chdr {
1352 : Elf32_Word ch_type;
1353 : Elf32_Word ch_size;
1354 : Elf32_Word ch_addralign;
1355 : };
1356 :
1357 : // Compressed section header for ELF64.
1358 : struct Elf64_Chdr {
1359 : Elf64_Word ch_type;
1360 : Elf64_Word ch_reserved;
1361 : Elf64_Xword ch_size;
1362 : Elf64_Xword ch_addralign;
1363 : };
1364 :
1365 : // Node header for ELF32.
1366 : struct Elf32_Nhdr {
1367 : Elf32_Word n_namesz;
1368 : Elf32_Word n_descsz;
1369 : Elf32_Word n_type;
1370 : };
1371 :
1372 : // Node header for ELF64.
1373 : struct Elf64_Nhdr {
1374 : Elf64_Word n_namesz;
1375 : Elf64_Word n_descsz;
1376 : Elf64_Word n_type;
1377 : };
1378 :
1379 : // Legal values for ch_type field of compressed section header.
1380 : enum {
1381 : ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm.
1382 : ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific.
1383 : ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific.
1384 : ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific.
1385 : ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific.
1386 : };
1387 :
1388 : } // end namespace ELF
1389 : } // end namespace llvm
1390 :
1391 : #endif // LLVM_BINARYFORMAT_ELF_H
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