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Revert r354244 "[DAGCombiner] Eliminate dead stores to stack."
[llvm-complete.git] / include / llvm / BinaryFormat / ELF.h
blob5e9bfe7ffb17d1ecf62b4b8e30dbfd7f6d603592
1 //===- llvm/BinaryFormat/ELF.h - ELF constants and structures ---*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This header contains common, non-processor-specific data structures and
10 // constants for the ELF file format.
11 //
12 // The details of the ELF32 bits in this file are largely based on the Tool
13 // Interface Standard (TIS) Executable and Linking Format (ELF) Specification
14 // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format
15 // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files.
16 //
17 //===----------------------------------------------------------------------===//
18
19 #ifndef LLVM_BINARYFORMAT_ELF_H
20 #define LLVM_BINARYFORMAT_ELF_H
21
22 #include <cstdint>
23 #include <cstring>
24
25 namespace llvm {
26 namespace ELF {
27
28 using Elf32_Addr = uint32_t; // Program address
29 using Elf32_Off = uint32_t; // File offset
30 using Elf32_Half = uint16_t;
31 using Elf32_Word = uint32_t;
32 using Elf32_Sword = int32_t;
33
34 using Elf64_Addr = uint64_t;
35 using Elf64_Off = uint64_t;
36 using Elf64_Half = uint16_t;
37 using Elf64_Word = uint32_t;
38 using Elf64_Sword = int32_t;
39 using Elf64_Xword = uint64_t;
40 using Elf64_Sxword = int64_t;
41
42 // Object file magic string.
43 static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'};
44
45 // e_ident size and indices.
46 enum {
47 EI_MAG0 = 0, // File identification index.
48 EI_MAG1 = 1, // File identification index.
49 EI_MAG2 = 2, // File identification index.
50 EI_MAG3 = 3, // File identification index.
51 EI_CLASS = 4, // File class.
52 EI_DATA = 5, // Data encoding.
53 EI_VERSION = 6, // File version.
54 EI_OSABI = 7, // OS/ABI identification.
55 EI_ABIVERSION = 8, // ABI version.
56 EI_PAD = 9, // Start of padding bytes.
57 EI_NIDENT = 16 // Number of bytes in e_ident.
58 };
59
60 struct Elf32_Ehdr {
61 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
62 Elf32_Half e_type; // Type of file (see ET_* below)
63 Elf32_Half e_machine; // Required architecture for this file (see EM_*)
64 Elf32_Word e_version; // Must be equal to 1
65 Elf32_Addr e_entry; // Address to jump to in order to start program
66 Elf32_Off e_phoff; // Program header table's file offset, in bytes
67 Elf32_Off e_shoff; // Section header table's file offset, in bytes
68 Elf32_Word e_flags; // Processor-specific flags
69 Elf32_Half e_ehsize; // Size of ELF header, in bytes
70 Elf32_Half e_phentsize; // Size of an entry in the program header table
71 Elf32_Half e_phnum; // Number of entries in the program header table
72 Elf32_Half e_shentsize; // Size of an entry in the section header table
73 Elf32_Half e_shnum; // Number of entries in the section header table
74 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table
75
76 bool checkMagic() const {
77 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
78 }
79
80 unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
81 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
82 };
83
84 // 64-bit ELF header. Fields are the same as for ELF32, but with different
85 // types (see above).
86 struct Elf64_Ehdr {
87 unsigned char e_ident[EI_NIDENT];
88 Elf64_Half e_type;
89 Elf64_Half e_machine;
90 Elf64_Word e_version;
91 Elf64_Addr e_entry;
92 Elf64_Off e_phoff;
93 Elf64_Off e_shoff;
94 Elf64_Word e_flags;
95 Elf64_Half e_ehsize;
96 Elf64_Half e_phentsize;
97 Elf64_Half e_phnum;
98 Elf64_Half e_shentsize;
99 Elf64_Half e_shnum;
100 Elf64_Half e_shstrndx;
101
102 bool checkMagic() const {
103 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
104 }
105
106 unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
107 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
108 };
109
110 // File types
111 enum {
112 ET_NONE = 0, // No file type
113 ET_REL = 1, // Relocatable file
114 ET_EXEC = 2, // Executable file
115 ET_DYN = 3, // Shared object file
116 ET_CORE = 4, // Core file
117 ET_LOPROC = 0xff00, // Beginning of processor-specific codes
118 ET_HIPROC = 0xffff // Processor-specific
119 };
120
121 // Versioning
122 enum { EV_NONE = 0, EV_CURRENT = 1 };
123
124 // Machine architectures
125 // See current registered ELF machine architectures at:
126 // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html
127 enum {
128 EM_NONE = 0, // No machine
129 EM_M32 = 1, // AT&T WE 32100
130 EM_SPARC = 2, // SPARC
131 EM_386 = 3, // Intel 386
132 EM_68K = 4, // Motorola 68000
133 EM_88K = 5, // Motorola 88000
134 EM_IAMCU = 6, // Intel MCU
135 EM_860 = 7, // Intel 80860
136 EM_MIPS = 8, // MIPS R3000
137 EM_S370 = 9, // IBM System/370
138 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian
139 EM_PARISC = 15, // Hewlett-Packard PA-RISC
140 EM_VPP500 = 17, // Fujitsu VPP500
141 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC
142 EM_960 = 19, // Intel 80960
143 EM_PPC = 20, // PowerPC
144 EM_PPC64 = 21, // PowerPC64
145 EM_S390 = 22, // IBM System/390
146 EM_SPU = 23, // IBM SPU/SPC
147 EM_V800 = 36, // NEC V800
148 EM_FR20 = 37, // Fujitsu FR20
149 EM_RH32 = 38, // TRW RH-32
150 EM_RCE = 39, // Motorola RCE
151 EM_ARM = 40, // ARM
152 EM_ALPHA = 41, // DEC Alpha
153 EM_SH = 42, // Hitachi SH
154 EM_SPARCV9 = 43, // SPARC V9
155 EM_TRICORE = 44, // Siemens TriCore
156 EM_ARC = 45, // Argonaut RISC Core
157 EM_H8_300 = 46, // Hitachi H8/300
158 EM_H8_300H = 47, // Hitachi H8/300H
159 EM_H8S = 48, // Hitachi H8S
160 EM_H8_500 = 49, // Hitachi H8/500
161 EM_IA_64 = 50, // Intel IA-64 processor architecture
162 EM_MIPS_X = 51, // Stanford MIPS-X
163 EM_COLDFIRE = 52, // Motorola ColdFire
164 EM_68HC12 = 53, // Motorola M68HC12
165 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator
166 EM_PCP = 55, // Siemens PCP
167 EM_NCPU = 56, // Sony nCPU embedded RISC processor
168 EM_NDR1 = 57, // Denso NDR1 microprocessor
169 EM_STARCORE = 58, // Motorola Star*Core processor
170 EM_ME16 = 59, // Toyota ME16 processor
171 EM_ST100 = 60, // STMicroelectronics ST100 processor
172 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family
173 EM_X86_64 = 62, // AMD x86-64 architecture
174 EM_PDSP = 63, // Sony DSP Processor
175 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10
176 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11
177 EM_FX66 = 66, // Siemens FX66 microcontroller
178 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller
179 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller
180 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller
181 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller
182 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller
183 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller
184 EM_SVX = 73, // Silicon Graphics SVx
185 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller
186 EM_VAX = 75, // Digital VAX
187 EM_CRIS = 76, // Axis Communications 32-bit embedded processor
188 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor
189 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor
190 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor
191 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor
192 EM_HUANY = 81, // Harvard University machine-independent object files
193 EM_PRISM = 82, // SiTera Prism
194 EM_AVR = 83, // Atmel AVR 8-bit microcontroller
195 EM_FR30 = 84, // Fujitsu FR30
196 EM_D10V = 85, // Mitsubishi D10V
197 EM_D30V = 86, // Mitsubishi D30V
198 EM_V850 = 87, // NEC v850
199 EM_M32R = 88, // Mitsubishi M32R
200 EM_MN10300 = 89, // Matsushita MN10300
201 EM_MN10200 = 90, // Matsushita MN10200
202 EM_PJ = 91, // picoJava
203 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor
204 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old
205 // spelling/synonym: EM_ARC_A5)
206 EM_XTENSA = 94, // Tensilica Xtensa Architecture
207 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor
208 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor
209 EM_NS32K = 97, // National Semiconductor 32000 series
210 EM_TPC = 98, // Tenor Network TPC processor
211 EM_SNP1K = 99, // Trebia SNP 1000 processor
212 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200
213 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family
214 EM_MAX = 102, // MAX Processor
215 EM_CR = 103, // National Semiconductor CompactRISC microprocessor
216 EM_F2MC16 = 104, // Fujitsu F2MC16
217 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430
218 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor
219 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors
220 EM_SEP = 108, // Sharp embedded microprocessor
221 EM_ARCA = 109, // Arca RISC Microprocessor
222 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC
223 // of Peking University
224 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU
225 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor
226 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor
227 EM_CRX = 114, // National Semiconductor CompactRISC CRX
228 EM_XGATE = 115, // Motorola XGATE embedded processor
229 EM_C166 = 116, // Infineon C16x/XC16x processor
230 EM_M16C = 117, // Renesas M16C series microprocessors
231 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal
232 // Controller
233 EM_CE = 119, // Freescale Communication Engine RISC core
234 EM_M32C = 120, // Renesas M32C series microprocessors
235 EM_TSK3000 = 131, // Altium TSK3000 core
236 EM_RS08 = 132, // Freescale RS08 embedded processor
237 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP
238 // processors
239 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor
240 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor
241 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor
242 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor
243 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture
244 EM_SE_C17 = 139, // Seiko Epson C17 family
245 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family
246 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family
247 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family
248 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor
249 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor
250 EM_R32C = 162, // Renesas R32C series microprocessors
251 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family
252 EM_HEXAGON = 164, // Qualcomm Hexagon processor
253 EM_8051 = 165, // Intel 8051 and variants
254 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable
255 // and extensible RISC processors
256 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC
257 // processor family
258 EM_ECOG1 = 168, // Cyan Technology eCOG1X family
259 EM_ECOG1X = 168, // Cyan Technology eCOG1X family
260 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers
261 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor
262 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor
263 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture
264 EM_RX = 173, // Renesas RX family
265 EM_METAG = 174, // Imagination Technologies META processor
266 // architecture
267 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture
268 EM_ECOG16 = 176, // Cyan Technology eCOG16 family
269 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit
270 // microprocessor
271 EM_ETPU = 178, // Freescale Extended Time Processing Unit
272 EM_SLE9X = 179, // Infineon Technologies SLE9X core
273 EM_L10M = 180, // Intel L10M
274 EM_K10M = 181, // Intel K10M
275 EM_AARCH64 = 183, // ARM AArch64
276 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family
277 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller
278 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family
279 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family
280 EM_CUDA = 190, // NVIDIA CUDA architecture
281 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family
282 EM_CLOUDSHIELD = 192, // CloudShield architecture family
283 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family
284 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family
285 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2
286 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core
287 EM_RL78 = 197, // Renesas RL78 family
288 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor
289 EM_78KOR = 199, // Renesas 78KOR family
290 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC)
291 EM_BA1 = 201, // Beyond BA1 CPU architecture
292 EM_BA2 = 202, // Beyond BA2 CPU architecture
293 EM_XCORE = 203, // XMOS xCORE processor family
294 EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family
295 EM_INTEL205 = 205, // Reserved by Intel
296 EM_INTEL206 = 206, // Reserved by Intel
297 EM_INTEL207 = 207, // Reserved by Intel
298 EM_INTEL208 = 208, // Reserved by Intel
299 EM_INTEL209 = 209, // Reserved by Intel
300 EM_KM32 = 210, // KM211 KM32 32-bit processor
301 EM_KMX32 = 211, // KM211 KMX32 32-bit processor
302 EM_KMX16 = 212, // KM211 KMX16 16-bit processor
303 EM_KMX8 = 213, // KM211 KMX8 8-bit processor
304 EM_KVARC = 214, // KM211 KVARC processor
305 EM_CDP = 215, // Paneve CDP architecture family
306 EM_COGE = 216, // Cognitive Smart Memory Processor
307 EM_COOL = 217, // iCelero CoolEngine
308 EM_NORC = 218, // Nanoradio Optimized RISC
309 EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family
310 EM_AMDGPU = 224, // AMD GPU architecture
311 EM_RISCV = 243, // RISC-V
312 EM_LANAI = 244, // Lanai 32-bit processor
313 EM_BPF = 247, // Linux kernel bpf virtual machine
314 };
315
316 // Object file classes.
317 enum {
318 ELFCLASSNONE = 0,
319 ELFCLASS32 = 1, // 32-bit object file
320 ELFCLASS64 = 2 // 64-bit object file
321 };
322
323 // Object file byte orderings.
324 enum {
325 ELFDATANONE = 0, // Invalid data encoding.
326 ELFDATA2LSB = 1, // Little-endian object file
327 ELFDATA2MSB = 2 // Big-endian object file
328 };
329
330 // OS ABI identification.
331 enum {
332 ELFOSABI_NONE = 0, // UNIX System V ABI
333 ELFOSABI_HPUX = 1, // HP-UX operating system
334 ELFOSABI_NETBSD = 2, // NetBSD
335 ELFOSABI_GNU = 3, // GNU/Linux
336 ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU.
337 ELFOSABI_HURD = 4, // GNU/Hurd
338 ELFOSABI_SOLARIS = 6, // Solaris
339 ELFOSABI_AIX = 7, // AIX
340 ELFOSABI_IRIX = 8, // IRIX
341 ELFOSABI_FREEBSD = 9, // FreeBSD
342 ELFOSABI_TRU64 = 10, // TRU64 UNIX
343 ELFOSABI_MODESTO = 11, // Novell Modesto
344 ELFOSABI_OPENBSD = 12, // OpenBSD
345 ELFOSABI_OPENVMS = 13, // OpenVMS
346 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel
347 ELFOSABI_AROS = 15, // AROS
348 ELFOSABI_FENIXOS = 16, // FenixOS
349 ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI
350 ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI
351 ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime
352 ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime
353 ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime
354 ELFOSABI_ARM = 97, // ARM
355 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
356 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
357 ELFOSABI_STANDALONE = 255, // Standalone (embedded) application
358 ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI
359 };
360
361 #define ELF_RELOC(name, value) name = value,
362
363 // X86_64 relocations.
364 enum {
365 #include "ELFRelocs/x86_64.def"
366 };
367
368 // i386 relocations.
369 enum {
370 #include "ELFRelocs/i386.def"
371 };
372
373 // ELF Relocation types for PPC32
374 enum {
375 #include "ELFRelocs/PowerPC.def"
376 };
377
378 // Specific e_flags for PPC64
379 enum {
380 // e_flags bits specifying ABI:
381 // 1 for original ABI using function descriptors,
382 // 2 for revised ABI without function descriptors,
383 // 0 for unspecified or not using any features affected by the differences.
384 EF_PPC64_ABI = 3
385 };
386
387 // Special values for the st_other field in the symbol table entry for PPC64.
388 enum {
389 STO_PPC64_LOCAL_BIT = 5,
390 STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT)
391 };
392 static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) {
393 unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT;
394 return ((1 << Val) >> 2) << 2;
395 }
396 static inline unsigned encodePPC64LocalEntryOffset(int64_t Offset) {
397 unsigned Val =
398 (Offset >= 4 * 4 ? (Offset >= 8 * 4 ? (Offset >= 16 * 4 ? 6 : 5) : 4)
399 : (Offset >= 2 * 4 ? 3 : (Offset >= 1 * 4 ? 2 : 0)));
400 return Val << STO_PPC64_LOCAL_BIT;
401 }
402
403 // ELF Relocation types for PPC64
404 enum {
405 #include "ELFRelocs/PowerPC64.def"
406 };
407
408 // ELF Relocation types for AArch64
409 enum {
410 #include "ELFRelocs/AArch64.def"
411 };
412
413 // ARM Specific e_flags
414 enum : unsigned {
415 EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5
416 EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5
417 EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5
418 EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5
419 EF_ARM_EABI_UNKNOWN = 0x00000000U,
420 EF_ARM_EABI_VER1 = 0x01000000U,
421 EF_ARM_EABI_VER2 = 0x02000000U,
422 EF_ARM_EABI_VER3 = 0x03000000U,
423 EF_ARM_EABI_VER4 = 0x04000000U,
424 EF_ARM_EABI_VER5 = 0x05000000U,
425 EF_ARM_EABIMASK = 0xFF000000U
426 };
427
428 // ELF Relocation types for ARM
429 enum {
430 #include "ELFRelocs/ARM.def"
431 };
432
433 // ARC Specific e_flags
434 enum : unsigned {
435 EF_ARC_MACH_MSK = 0x000000ff,
436 EF_ARC_OSABI_MSK = 0x00000f00,
437 E_ARC_MACH_ARC600 = 0x00000002,
438 E_ARC_MACH_ARC601 = 0x00000004,
439 E_ARC_MACH_ARC700 = 0x00000003,
440 EF_ARC_CPU_ARCV2EM = 0x00000005,
441 EF_ARC_CPU_ARCV2HS = 0x00000006,
442 E_ARC_OSABI_ORIG = 0x00000000,
443 E_ARC_OSABI_V2 = 0x00000200,
444 E_ARC_OSABI_V3 = 0x00000300,
445 E_ARC_OSABI_V4 = 0x00000400,
446 EF_ARC_PIC = 0x00000100
447 };
448
449 // ELF Relocation types for ARC
450 enum {
451 #include "ELFRelocs/ARC.def"
452 };
453
454 // AVR specific e_flags
455 enum : unsigned {
456 EF_AVR_ARCH_AVR1 = 1,
457 EF_AVR_ARCH_AVR2 = 2,
458 EF_AVR_ARCH_AVR25 = 25,
459 EF_AVR_ARCH_AVR3 = 3,
460 EF_AVR_ARCH_AVR31 = 31,
461 EF_AVR_ARCH_AVR35 = 35,
462 EF_AVR_ARCH_AVR4 = 4,
463 EF_AVR_ARCH_AVR5 = 5,
464 EF_AVR_ARCH_AVR51 = 51,
465 EF_AVR_ARCH_AVR6 = 6,
466 EF_AVR_ARCH_AVRTINY = 100,
467 EF_AVR_ARCH_XMEGA1 = 101,
468 EF_AVR_ARCH_XMEGA2 = 102,
469 EF_AVR_ARCH_XMEGA3 = 103,
470 EF_AVR_ARCH_XMEGA4 = 104,
471 EF_AVR_ARCH_XMEGA5 = 105,
472 EF_AVR_ARCH_XMEGA6 = 106,
473 EF_AVR_ARCH_XMEGA7 = 107
474 };
475
476 // ELF Relocation types for AVR
477 enum {
478 #include "ELFRelocs/AVR.def"
479 };
480
481 // Mips Specific e_flags
482 enum : unsigned {
483 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
484 EF_MIPS_PIC = 0x00000002, // Position independent code
485 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
486 EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI
487 EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine
488 // in 32-bit mode
489 EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine
490 // but uses 64-bit FP registers
491 EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding
492
493 // ABI flags
494 EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
495 EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture.
496 EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode.
497 EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode.
498 EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant.
499
500 // MIPS machine variant
501 EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation.
502 EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900
503 EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010
504 EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100
505 EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650
506 EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120
507 EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181
508 EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1
509 EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon
510 EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr
511 EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2
512 EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3
513 EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400
514 EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900
515 EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500
516 EF_MIPS_MACH_9000 = 0x00990000, // Unknown
517 EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E
518 EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F
519 EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A
520 EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask
521
522 // ARCH_ASE
523 EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
524 EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions
525 EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions
526 EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags
527
528 // ARCH
529 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
530 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
531 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
532 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
533 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
534 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
535 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
536 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5
537 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5
538 EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6
539 EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6
540 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
541 };
542
543 // ELF Relocation types for Mips
544 enum {
545 #include "ELFRelocs/Mips.def"
546 };
547
548 // Special values for the st_other field in the symbol table entry for MIPS.
549 enum {
550 STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional
551 STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record
552 STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC
553 STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips
554 STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16
555 };
556
557 // .MIPS.options section descriptor kinds
558 enum {
559 ODK_NULL = 0, // Undefined
560 ODK_REGINFO = 1, // Register usage information
561 ODK_EXCEPTIONS = 2, // Exception processing options
562 ODK_PAD = 3, // Section padding options
563 ODK_HWPATCH = 4, // Hardware patches applied
564 ODK_FILL = 5, // Linker fill value
565 ODK_TAGS = 6, // Space for tool identification
566 ODK_HWAND = 7, // Hardware AND patches applied
567 ODK_HWOR = 8, // Hardware OR patches applied
568 ODK_GP_GROUP = 9, // GP group to use for text/data sections
569 ODK_IDENT = 10, // ID information
570 ODK_PAGESIZE = 11 // Page size information
571 };
572
573 // Hexagon-specific e_flags
574 enum {
575 // Object processor version flags, bits[11:0]
576 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2
577 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3
578 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4
579 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5
580 EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55
581 EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60
582 EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62
583 EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65
584 EF_HEXAGON_MACH_V66 = 0x00000066, // Hexagon V66
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 EF_HEXAGON_ISA_V66 = 0x00000066, // Hexagon V66 ISA
598 };
599
600 // Hexagon-specific section indexes for common small data
601 enum {
602 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes
603 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access
604 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access
605 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access
606 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access
607 };
608
609 // ELF Relocation types for Hexagon
610 enum {
611 #include "ELFRelocs/Hexagon.def"
612 };
613
614 // ELF Relocation type for Lanai.
615 enum {
616 #include "ELFRelocs/Lanai.def"
617 };
618
619 // RISCV Specific e_flags
620 enum : unsigned {
621 EF_RISCV_RVC = 0x0001,
622 EF_RISCV_FLOAT_ABI = 0x0006,
623 EF_RISCV_FLOAT_ABI_SOFT = 0x0000,
624 EF_RISCV_FLOAT_ABI_SINGLE = 0x0002,
625 EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004,
626 EF_RISCV_FLOAT_ABI_QUAD = 0x0006,
627 EF_RISCV_RVE = 0x0008
628 };
629
630 // ELF Relocation types for RISC-V
631 enum {
632 #include "ELFRelocs/RISCV.def"
633 };
634
635 // ELF Relocation types for S390/zSeries
636 enum {
637 #include "ELFRelocs/SystemZ.def"
638 };
639
640 // ELF Relocation type for Sparc.
641 enum {
642 #include "ELFRelocs/Sparc.def"
643 };
644
645 // AMDGPU specific e_flags.
646 enum : unsigned {
647 // Processor selection mask for EF_AMDGPU_MACH_* values.
648 EF_AMDGPU_MACH = 0x0ff,
649
650 // Not specified processor.
651 EF_AMDGPU_MACH_NONE = 0x000,
652
653 // R600-based processors.
654
655 // Radeon HD 2000/3000 Series (R600).
656 EF_AMDGPU_MACH_R600_R600 = 0x001,
657 EF_AMDGPU_MACH_R600_R630 = 0x002,
658 EF_AMDGPU_MACH_R600_RS880 = 0x003,
659 EF_AMDGPU_MACH_R600_RV670 = 0x004,
660 // Radeon HD 4000 Series (R700).
661 EF_AMDGPU_MACH_R600_RV710 = 0x005,
662 EF_AMDGPU_MACH_R600_RV730 = 0x006,
663 EF_AMDGPU_MACH_R600_RV770 = 0x007,
664 // Radeon HD 5000 Series (Evergreen).
665 EF_AMDGPU_MACH_R600_CEDAR = 0x008,
666 EF_AMDGPU_MACH_R600_CYPRESS = 0x009,
667 EF_AMDGPU_MACH_R600_JUNIPER = 0x00a,
668 EF_AMDGPU_MACH_R600_REDWOOD = 0x00b,
669 EF_AMDGPU_MACH_R600_SUMO = 0x00c,
670 // Radeon HD 6000 Series (Northern Islands).
671 EF_AMDGPU_MACH_R600_BARTS = 0x00d,
672 EF_AMDGPU_MACH_R600_CAICOS = 0x00e,
673 EF_AMDGPU_MACH_R600_CAYMAN = 0x00f,
674 EF_AMDGPU_MACH_R600_TURKS = 0x010,
675
676 // Reserved for R600-based processors.
677 EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011,
678 EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f,
679
680 // First/last R600-based processors.
681 EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600,
682 EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS,
683
684 // AMDGCN-based processors.
685
686 // AMDGCN GFX6.
687 EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020,
688 EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021,
689 // AMDGCN GFX7.
690 EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022,
691 EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023,
692 EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024,
693 EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025,
694 EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026,
695 // AMDGCN GFX8.
696 EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028,
697 EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029,
698 EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a,
699 EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b,
700 // AMDGCN GFX9.
701 EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c,
702 EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d,
703 EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e,
704 EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f,
705 EF_AMDGPU_MACH_AMDGCN_GFX909 = 0x031,
706
707 // Reserved for AMDGCN-based processors.
708 EF_AMDGPU_MACH_AMDGCN_RESERVED0 = 0x027,
709 EF_AMDGPU_MACH_AMDGCN_RESERVED1 = 0x030,
710
711 // First/last AMDGCN-based processors.
712 EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600,
713 EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX909,
714
715 // Indicates if the "xnack" target feature is enabled for all code contained
716 // in the object.
717 EF_AMDGPU_XNACK = 0x100,
718 // Indicates if the "sram-ecc" target feature is enabled for all code
719 // contained in the object.
720 EF_AMDGPU_SRAM_ECC = 0x200,
721 };
722
723 // ELF Relocation types for AMDGPU
724 enum {
725 #include "ELFRelocs/AMDGPU.def"
726 };
727
728 // ELF Relocation types for BPF
729 enum {
730 #include "ELFRelocs/BPF.def"
731 };
732
733 // MSP430 specific e_flags
734 enum : unsigned {
735 EF_MSP430_MACH_MSP430x11 = 11,
736 EF_MSP430_MACH_MSP430x11x1 = 110,
737 EF_MSP430_MACH_MSP430x12 = 12,
738 EF_MSP430_MACH_MSP430x13 = 13,
739 EF_MSP430_MACH_MSP430x14 = 14,
740 EF_MSP430_MACH_MSP430x15 = 15,
741 EF_MSP430_MACH_MSP430x16 = 16,
742 EF_MSP430_MACH_MSP430x20 = 20,
743 EF_MSP430_MACH_MSP430x22 = 22,
744 EF_MSP430_MACH_MSP430x23 = 23,
745 EF_MSP430_MACH_MSP430x24 = 24,
746 EF_MSP430_MACH_MSP430x26 = 26,
747 EF_MSP430_MACH_MSP430x31 = 31,
748 EF_MSP430_MACH_MSP430x32 = 32,
749 EF_MSP430_MACH_MSP430x33 = 33,
750 EF_MSP430_MACH_MSP430x41 = 41,
751 EF_MSP430_MACH_MSP430x42 = 42,
752 EF_MSP430_MACH_MSP430x43 = 43,
753 EF_MSP430_MACH_MSP430x44 = 44,
754 EF_MSP430_MACH_MSP430X = 45,
755 EF_MSP430_MACH_MSP430x46 = 46,
756 EF_MSP430_MACH_MSP430x47 = 47,
757 EF_MSP430_MACH_MSP430x54 = 54,
758 };
759
760 // ELF Relocation types for MSP430
761 enum {
762 #include "ELFRelocs/MSP430.def"
763 };
764
765 #undef ELF_RELOC
766
767 // Section header.
768 struct Elf32_Shdr {
769 Elf32_Word sh_name; // Section name (index into string table)
770 Elf32_Word sh_type; // Section type (SHT_*)
771 Elf32_Word sh_flags; // Section flags (SHF_*)
772 Elf32_Addr sh_addr; // Address where section is to be loaded
773 Elf32_Off sh_offset; // File offset of section data, in bytes
774 Elf32_Word sh_size; // Size of section, in bytes
775 Elf32_Word sh_link; // Section type-specific header table index link
776 Elf32_Word sh_info; // Section type-specific extra information
777 Elf32_Word sh_addralign; // Section address alignment
778 Elf32_Word sh_entsize; // Size of records contained within the section
779 };
780
781 // Section header for ELF64 - same fields as ELF32, different types.
782 struct Elf64_Shdr {
783 Elf64_Word sh_name;
784 Elf64_Word sh_type;
785 Elf64_Xword sh_flags;
786 Elf64_Addr sh_addr;
787 Elf64_Off sh_offset;
788 Elf64_Xword sh_size;
789 Elf64_Word sh_link;
790 Elf64_Word sh_info;
791 Elf64_Xword sh_addralign;
792 Elf64_Xword sh_entsize;
793 };
794
795 // Special section indices.
796 enum {
797 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
798 SHN_LORESERVE = 0xff00, // Lowest reserved index
799 SHN_LOPROC = 0xff00, // Lowest processor-specific index
800 SHN_HIPROC = 0xff1f, // Highest processor-specific index
801 SHN_LOOS = 0xff20, // Lowest operating system-specific index
802 SHN_HIOS = 0xff3f, // Highest operating system-specific index
803 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
804 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
805 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
806 SHN_HIRESERVE = 0xffff // Highest reserved index
807 };
808
809 // Section types.
810 enum : unsigned {
811 SHT_NULL = 0, // No associated section (inactive entry).
812 SHT_PROGBITS = 1, // Program-defined contents.
813 SHT_SYMTAB = 2, // Symbol table.
814 SHT_STRTAB = 3, // String table.
815 SHT_RELA = 4, // Relocation entries; explicit addends.
816 SHT_HASH = 5, // Symbol hash table.
817 SHT_DYNAMIC = 6, // Information for dynamic linking.
818 SHT_NOTE = 7, // Information about the file.
819 SHT_NOBITS = 8, // Data occupies no space in the file.
820 SHT_REL = 9, // Relocation entries; no explicit addends.
821 SHT_SHLIB = 10, // Reserved.
822 SHT_DYNSYM = 11, // Symbol table.
823 SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
824 SHT_FINI_ARRAY = 15, // Pointers to termination functions.
825 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
826 SHT_GROUP = 17, // Section group.
827 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
828 // Experimental support for SHT_RELR sections. For details, see proposal
829 // at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
830 SHT_RELR = 19, // Relocation entries; only offsets.
831 SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
832 // Android packed relocation section types.
833 // https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37
834 SHT_ANDROID_REL = 0x60000001,
835 SHT_ANDROID_RELA = 0x60000002,
836 SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table.
837 SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options.
838 SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c02, // LLVM Call Graph Profile.
839 SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols
840 // for safe ICF.
841 // Android's experimental support for SHT_RELR sections.
842 // https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512
843 SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets.
844 SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes.
845 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
846 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
847 SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
848 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
849 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
850 SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type.
851 // Fixme: All this is duplicated in MCSectionELF. Why??
852 // Exception Index table
853 SHT_ARM_EXIDX = 0x70000001U,
854 // BPABI DLL dynamic linking pre-emption map
855 SHT_ARM_PREEMPTMAP = 0x70000002U,
856 // Object file compatibility attributes
857 SHT_ARM_ATTRIBUTES = 0x70000003U,
858 SHT_ARM_DEBUGOVERLAY = 0x70000004U,
859 SHT_ARM_OVERLAYSECTION = 0x70000005U,
860 SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in
861 // this section based on their sizes
862 SHT_X86_64_UNWIND = 0x70000001, // Unwind information
863
864 SHT_MIPS_REGINFO = 0x70000006, // Register usage information
865 SHT_MIPS_OPTIONS = 0x7000000d, // General options
866 SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section.
867 SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information.
868
869 SHT_MSP430_ATTRIBUTES = 0x70000003U,
870
871 SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type.
872 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
873 SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
874 };
875
876 // Section flags.
877 enum : unsigned {
878 // Section data should be writable during execution.
879 SHF_WRITE = 0x1,
880
881 // Section occupies memory during program execution.
882 SHF_ALLOC = 0x2,
883
884 // Section contains executable machine instructions.
885 SHF_EXECINSTR = 0x4,
886
887 // The data in this section may be merged.
888 SHF_MERGE = 0x10,
889
890 // The data in this section is null-terminated strings.
891 SHF_STRINGS = 0x20,
892
893 // A field in this section holds a section header table index.
894 SHF_INFO_LINK = 0x40U,
895
896 // Adds special ordering requirements for link editors.
897 SHF_LINK_ORDER = 0x80U,
898
899 // This section requires special OS-specific processing to avoid incorrect
900 // behavior.
901 SHF_OS_NONCONFORMING = 0x100U,
902
903 // This section is a member of a section group.
904 SHF_GROUP = 0x200U,
905
906 // This section holds Thread-Local Storage.
907 SHF_TLS = 0x400U,
908
909 // Identifies a section containing compressed data.
910 SHF_COMPRESSED = 0x800U,
911
912 // This section is excluded from the final executable or shared library.
913 SHF_EXCLUDE = 0x80000000U,
914
915 // Start of target-specific flags.
916
917 SHF_MASKOS = 0x0ff00000,
918
919 // Bits indicating processor-specific flags.
920 SHF_MASKPROC = 0xf0000000,
921
922 /// All sections with the "d" flag are grouped together by the linker to form
923 /// the data section and the dp register is set to the start of the section by
924 /// the boot code.
925 XCORE_SHF_DP_SECTION = 0x10000000,
926
927 /// All sections with the "c" flag are grouped together by the linker to form
928 /// the constant pool and the cp register is set to the start of the constant
929 /// pool by the boot code.
930 XCORE_SHF_CP_SECTION = 0x20000000,
931
932 // If an object file section does not have this flag set, then it may not hold
933 // more than 2GB and can be freely referred to in objects using smaller code
934 // models. Otherwise, only objects using larger code models can refer to them.
935 // For example, a medium code model object can refer to data in a section that
936 // sets this flag besides being able to refer to data in a section that does
937 // not set it; likewise, a small code model object can refer only to code in a
938 // section that does not set this flag.
939 SHF_X86_64_LARGE = 0x10000000,
940
941 // All sections with the GPREL flag are grouped into a global data area
942 // for faster accesses
943 SHF_HEX_GPREL = 0x10000000,
944
945 // Section contains text/data which may be replicated in other sections.
946 // Linker must retain only one copy.
947 SHF_MIPS_NODUPES = 0x01000000,
948
949 // Linker must generate implicit hidden weak names.
950 SHF_MIPS_NAMES = 0x02000000,
951
952 // Section data local to process.
953 SHF_MIPS_LOCAL = 0x04000000,
954
955 // Do not strip this section.
956 SHF_MIPS_NOSTRIP = 0x08000000,
957
958 // Section must be part of global data area.
959 SHF_MIPS_GPREL = 0x10000000,
960
961 // This section should be merged.
962 SHF_MIPS_MERGE = 0x20000000,
963
964 // Address size to be inferred from section entry size.
965 SHF_MIPS_ADDR = 0x40000000,
966
967 // Section data is string data by default.
968 SHF_MIPS_STRING = 0x80000000,
969
970 // Make code section unreadable when in execute-only mode
971 SHF_ARM_PURECODE = 0x20000000
972 };
973
974 // Section Group Flags
975 enum : unsigned {
976 GRP_COMDAT = 0x1,
977 GRP_MASKOS = 0x0ff00000,
978 GRP_MASKPROC = 0xf0000000
979 };
980
981 // Symbol table entries for ELF32.
982 struct Elf32_Sym {
983 Elf32_Word st_name; // Symbol name (index into string table)
984 Elf32_Addr st_value; // Value or address associated with the symbol
985 Elf32_Word st_size; // Size of the symbol
986 unsigned char st_info; // Symbol's type and binding attributes
987 unsigned char st_other; // Must be zero; reserved
988 Elf32_Half st_shndx; // Which section (header table index) it's defined in
989
990 // These accessors and mutators correspond to the ELF32_ST_BIND,
991 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
992 unsigned char getBinding() const { return st_info >> 4; }
993 unsigned char getType() const { return st_info & 0x0f; }
994 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
995 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
996 void setBindingAndType(unsigned char b, unsigned char t) {
997 st_info = (b << 4) + (t & 0x0f);
998 }
999 };
1000
1001 // Symbol table entries for ELF64.
1002 struct Elf64_Sym {
1003 Elf64_Word st_name; // Symbol name (index into string table)
1004 unsigned char st_info; // Symbol's type and binding attributes
1005 unsigned char st_other; // Must be zero; reserved
1006 Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
1007 Elf64_Addr st_value; // Value or address associated with the symbol
1008 Elf64_Xword st_size; // Size of the symbol
1009
1010 // These accessors and mutators are identical to those defined for ELF32
1011 // symbol table entries.
1012 unsigned char getBinding() const { return st_info >> 4; }
1013 unsigned char getType() const { return st_info & 0x0f; }
1014 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
1015 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
1016 void setBindingAndType(unsigned char b, unsigned char t) {
1017 st_info = (b << 4) + (t & 0x0f);
1018 }
1019 };
1020
1021 // The size (in bytes) of symbol table entries.
1022 enum {
1023 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
1024 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
1025 };
1026
1027 // Symbol bindings.
1028 enum {
1029 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
1030 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
1031 STB_WEAK = 2, // Weak symbol, like global but lower-precedence
1032 STB_GNU_UNIQUE = 10,
1033 STB_LOOS = 10, // Lowest operating system-specific binding type
1034 STB_HIOS = 12, // Highest operating system-specific binding type
1035 STB_LOPROC = 13, // Lowest processor-specific binding type
1036 STB_HIPROC = 15 // Highest processor-specific binding type
1037 };
1038
1039 // Symbol types.
1040 enum {
1041 STT_NOTYPE = 0, // Symbol's type is not specified
1042 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
1043 STT_FUNC = 2, // Symbol is executable code (function, etc.)
1044 STT_SECTION = 3, // Symbol refers to a section
1045 STT_FILE = 4, // Local, absolute symbol that refers to a file
1046 STT_COMMON = 5, // An uninitialized common block
1047 STT_TLS = 6, // Thread local data object
1048 STT_GNU_IFUNC = 10, // GNU indirect function
1049 STT_LOOS = 10, // Lowest operating system-specific symbol type
1050 STT_HIOS = 12, // Highest operating system-specific symbol type
1051 STT_LOPROC = 13, // Lowest processor-specific symbol type
1052 STT_HIPROC = 15, // Highest processor-specific symbol type
1053
1054 // AMDGPU symbol types
1055 STT_AMDGPU_HSA_KERNEL = 10
1056 };
1057
1058 enum {
1059 STV_DEFAULT = 0, // Visibility is specified by binding type
1060 STV_INTERNAL = 1, // Defined by processor supplements
1061 STV_HIDDEN = 2, // Not visible to other components
1062 STV_PROTECTED = 3 // Visible in other components but not preemptable
1063 };
1064
1065 // Symbol number.
1066 enum { STN_UNDEF = 0 };
1067
1068 // Special relocation symbols used in the MIPS64 ELF relocation entries
1069 enum {
1070 RSS_UNDEF = 0, // None
1071 RSS_GP = 1, // Value of gp
1072 RSS_GP0 = 2, // Value of gp used to create object being relocated
1073 RSS_LOC = 3 // Address of location being relocated
1074 };
1075
1076 // Relocation entry, without explicit addend.
1077 struct Elf32_Rel {
1078 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1079 Elf32_Word r_info; // Symbol table index and type of relocation to apply
1080
1081 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1082 // and ELF32_R_INFO macros defined in the ELF specification:
1083 Elf32_Word getSymbol() const { return (r_info >> 8); }
1084 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
1085 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1086 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1087 void setSymbolAndType(Elf32_Word s, unsigned char t) {
1088 r_info = (s << 8) + t;
1089 }
1090 };
1091
1092 // Relocation entry with explicit addend.
1093 struct Elf32_Rela {
1094 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1095 Elf32_Word r_info; // Symbol table index and type of relocation to apply
1096 Elf32_Sword r_addend; // Compute value for relocatable field by adding this
1097
1098 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1099 // and ELF32_R_INFO macros defined in the ELF specification:
1100 Elf32_Word getSymbol() const { return (r_info >> 8); }
1101 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
1102 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
1103 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
1104 void setSymbolAndType(Elf32_Word s, unsigned char t) {
1105 r_info = (s << 8) + t;
1106 }
1107 };
1108
1109 // Relocation entry without explicit addend or info (relative relocations only).
1110 typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations
1111
1112 // Relocation entry, without explicit addend.
1113 struct Elf64_Rel {
1114 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1115 Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1116
1117 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1118 // and ELF64_R_INFO macros defined in the ELF specification:
1119 Elf64_Word getSymbol() const { return (r_info >> 32); }
1120 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
1121 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
1122 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
1123 void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1124 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
1125 }
1126 };
1127
1128 // Relocation entry with explicit addend.
1129 struct Elf64_Rela {
1130 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1131 Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1132 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
1133
1134 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1135 // and ELF64_R_INFO macros defined in the ELF specification:
1136 Elf64_Word getSymbol() const { return (r_info >> 32); }
1137 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
1138 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
1139 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
1140 void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1141 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
1142 }
1143 };
1144
1145 // Relocation entry without explicit addend or info (relative relocations only).
1146 typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations
1147
1148 // Program header for ELF32.
1149 struct Elf32_Phdr {
1150 Elf32_Word p_type; // Type of segment
1151 Elf32_Off p_offset; // File offset where segment is located, in bytes
1152 Elf32_Addr p_vaddr; // Virtual address of beginning of segment
1153 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
1154 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
1155 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
1156 Elf32_Word p_flags; // Segment flags
1157 Elf32_Word p_align; // Segment alignment constraint
1158 };
1159
1160 // Program header for ELF64.
1161 struct Elf64_Phdr {
1162 Elf64_Word p_type; // Type of segment
1163 Elf64_Word p_flags; // Segment flags
1164 Elf64_Off p_offset; // File offset where segment is located, in bytes
1165 Elf64_Addr p_vaddr; // Virtual address of beginning of segment
1166 Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific)
1167 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
1168 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
1169 Elf64_Xword p_align; // Segment alignment constraint
1170 };
1171
1172 // Segment types.
1173 enum {
1174 PT_NULL = 0, // Unused segment.
1175 PT_LOAD = 1, // Loadable segment.
1176 PT_DYNAMIC = 2, // Dynamic linking information.
1177 PT_INTERP = 3, // Interpreter pathname.
1178 PT_NOTE = 4, // Auxiliary information.
1179 PT_SHLIB = 5, // Reserved.
1180 PT_PHDR = 6, // The program header table itself.
1181 PT_TLS = 7, // The thread-local storage template.
1182 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
1183 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
1184 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
1185 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type.
1186
1187 // x86-64 program header types.
1188 // These all contain stack unwind tables.
1189 PT_GNU_EH_FRAME = 0x6474e550,
1190 PT_SUNW_EH_FRAME = 0x6474e550,
1191 PT_SUNW_UNWIND = 0x6464e550,
1192
1193 PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
1194 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
1195
1196 PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data.
1197 PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations.
1198 PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments.
1199
1200 // ARM program header types.
1201 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
1202 // These all contain stack unwind tables.
1203 PT_ARM_EXIDX = 0x70000001,
1204 PT_ARM_UNWIND = 0x70000001,
1205
1206 // MIPS program header types.
1207 PT_MIPS_REGINFO = 0x70000000, // Register usage information.
1208 PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table.
1209 PT_MIPS_OPTIONS = 0x70000002, // Options segment.
1210 PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment.
1211 };
1212
1213 // Segment flag bits.
1214 enum : unsigned {
1215 PF_X = 1, // Execute
1216 PF_W = 2, // Write
1217 PF_R = 4, // Read
1218 PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics.
1219 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1220 };
1221
1222 // Dynamic table entry for ELF32.
1223 struct Elf32_Dyn {
1224 Elf32_Sword d_tag; // Type of dynamic table entry.
1225 union {
1226 Elf32_Word d_val; // Integer value of entry.
1227 Elf32_Addr d_ptr; // Pointer value of entry.
1228 } d_un;
1229 };
1230
1231 // Dynamic table entry for ELF64.
1232 struct Elf64_Dyn {
1233 Elf64_Sxword d_tag; // Type of dynamic table entry.
1234 union {
1235 Elf64_Xword d_val; // Integer value of entry.
1236 Elf64_Addr d_ptr; // Pointer value of entry.
1237 } d_un;
1238 };
1239
1240 // Dynamic table entry tags.
1241 enum {
1242 #define DYNAMIC_TAG(name, value) DT_##name = value,
1243 #include "DynamicTags.def"
1244 #undef DYNAMIC_TAG
1245 };
1246
1247 // DT_FLAGS values.
1248 enum {
1249 DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
1250 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
1251 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
1252 DF_BIND_NOW = 0x08, // Process all relocations on load.
1253 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
1254 };
1255
1256 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1257 enum {
1258 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
1259 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
1260 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
1261 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
1262 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
1263 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
1264 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
1265 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
1266 DF_1_DIRECT = 0x00000100, // Direct binding enabled.
1267 DF_1_TRANS = 0x00000200,
1268 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
1269 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
1270 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
1271 DF_1_CONFALT = 0x00002000, // Configuration alternative created.
1272 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
1273 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1274 DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time.
1275 DF_1_NODIRECT = 0x00020000, // Object has no-direct binding.
1276 DF_1_IGNMULDEF = 0x00040000,
1277 DF_1_NOKSYMS = 0x00080000,
1278 DF_1_NOHDR = 0x00100000,
1279 DF_1_EDITED = 0x00200000, // Object is modified after built.
1280 DF_1_NORELOC = 0x00400000,
1281 DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers.
1282 DF_1_GLOBAUDIT = 0x01000000, // Global auditing required.
1283 DF_1_SINGLETON = 0x02000000 // Singleton symbols are used.
1284 };
1285
1286 // DT_MIPS_FLAGS values.
1287 enum {
1288 RHF_NONE = 0x00000000, // No flags.
1289 RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers.
1290 RHF_NOTPOT = 0x00000002, // Hash size is not a power of two.
1291 RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH.
1292 RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated.
1293 RHF_SGI_ONLY = 0x00000010, // SGI specific features.
1294 RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish
1295 // executing before any non-init
1296 // code in DSO is called.
1297 RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code.
1298 RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start
1299 // executing before any non-init
1300 // code in DSO is called.
1301 RHF_PIXIE = 0x00000100, // Generated by pixie.
1302 RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default.
1303 RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted
1304 RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted
1305 RHF_CORD = 0x00001000, // Generated by cord.
1306 RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved
1307 // undef symbols.
1308 RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order.
1309 };
1310
1311 // ElfXX_VerDef structure version (GNU versioning)
1312 enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 };
1313
1314 // VerDef Flags (ElfXX_VerDef::vd_flags)
1315 enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 };
1316
1317 // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1318 enum {
1319 VER_NDX_LOCAL = 0, // Unversioned local symbol
1320 VER_NDX_GLOBAL = 1, // Unversioned global symbol
1321 VERSYM_VERSION = 0x7fff, // Version Index mask
1322 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
1323 };
1324
1325 // ElfXX_VerNeed structure version (GNU versioning)
1326 enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 };
1327
1328 // SHT_NOTE section types
1329 enum {
1330 NT_FREEBSD_THRMISC = 7,
1331 NT_FREEBSD_PROCSTAT_PROC = 8,
1332 NT_FREEBSD_PROCSTAT_FILES = 9,
1333 NT_FREEBSD_PROCSTAT_VMMAP = 10,
1334 NT_FREEBSD_PROCSTAT_GROUPS = 11,
1335 NT_FREEBSD_PROCSTAT_UMASK = 12,
1336 NT_FREEBSD_PROCSTAT_RLIMIT = 13,
1337 NT_FREEBSD_PROCSTAT_OSREL = 14,
1338 NT_FREEBSD_PROCSTAT_PSSTRINGS = 15,
1339 NT_FREEBSD_PROCSTAT_AUXV = 16,
1340 };
1341
1342 enum {
1343 NT_GNU_ABI_TAG = 1,
1344 NT_GNU_HWCAP = 2,
1345 NT_GNU_BUILD_ID = 3,
1346 NT_GNU_GOLD_VERSION = 4,
1347 NT_GNU_PROPERTY_TYPE_0 = 5,
1348 };
1349
1350 // Property types used in GNU_PROPERTY_TYPE_0 notes.
1351 enum : unsigned {
1352 GNU_PROPERTY_STACK_SIZE = 1,
1353 GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2,
1354 GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002,
1355 GNU_PROPERTY_X86_ISA_1_NEEDED = 0xc0008000,
1356 GNU_PROPERTY_X86_FEATURE_2_NEEDED = 0xc0008001,
1357 GNU_PROPERTY_X86_ISA_1_USED = 0xc0010000,
1358 GNU_PROPERTY_X86_FEATURE_2_USED = 0xc0010001,
1359 };
1360
1361 // x86 processor feature bits.
1362 enum : unsigned {
1363 GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0,
1364 GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1,
1365
1366 GNU_PROPERTY_X86_ISA_1_CMOV = 1 << 0,
1367 GNU_PROPERTY_X86_ISA_1_SSE = 1 << 1,
1368 GNU_PROPERTY_X86_ISA_1_SSE2 = 1 << 2,
1369 GNU_PROPERTY_X86_ISA_1_SSE3 = 1 << 3,
1370 GNU_PROPERTY_X86_ISA_1_SSSE3 = 1 << 4,
1371 GNU_PROPERTY_X86_ISA_1_SSE4_1 = 1 << 5,
1372 GNU_PROPERTY_X86_ISA_1_SSE4_2 = 1 << 6,
1373 GNU_PROPERTY_X86_ISA_1_AVX = 1 << 7,
1374 GNU_PROPERTY_X86_ISA_1_AVX2 = 1 << 8,
1375 GNU_PROPERTY_X86_ISA_1_FMA = 1 << 9,
1376 GNU_PROPERTY_X86_ISA_1_AVX512F = 1 << 10,
1377 GNU_PROPERTY_X86_ISA_1_AVX512CD = 1 << 11,
1378 GNU_PROPERTY_X86_ISA_1_AVX512ER = 1 << 12,
1379 GNU_PROPERTY_X86_ISA_1_AVX512PF = 1 << 13,
1380 GNU_PROPERTY_X86_ISA_1_AVX512VL = 1 << 14,
1381 GNU_PROPERTY_X86_ISA_1_AVX512DQ = 1 << 15,
1382 GNU_PROPERTY_X86_ISA_1_AVX512BW = 1 << 16,
1383 GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS = 1 << 17,
1384 GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW = 1 << 18,
1385 GNU_PROPERTY_X86_ISA_1_AVX512_BITALG = 1 << 19,
1386 GNU_PROPERTY_X86_ISA_1_AVX512_IFMA = 1 << 20,
1387 GNU_PROPERTY_X86_ISA_1_AVX512_VBMI = 1 << 21,
1388 GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2 = 1 << 22,
1389 GNU_PROPERTY_X86_ISA_1_AVX512_VNNI = 1 << 23,
1390
1391 GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0,
1392 GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1,
1393 GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2,
1394 GNU_PROPERTY_X86_FEATURE_2_XMM = 1 << 3,
1395 GNU_PROPERTY_X86_FEATURE_2_YMM = 1 << 4,
1396 GNU_PROPERTY_X86_FEATURE_2_ZMM = 1 << 5,
1397 GNU_PROPERTY_X86_FEATURE_2_FXSR = 1 << 6,
1398 GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7,
1399 GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8,
1400 GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9,
1401 };
1402
1403 // AMD specific notes. (Code Object V2)
1404 enum {
1405 // Note types with values between 0 and 9 (inclusive) are reserved.
1406 NT_AMD_AMDGPU_HSA_METADATA = 10,
1407 NT_AMD_AMDGPU_ISA = 11,
1408 NT_AMD_AMDGPU_PAL_METADATA = 12
1409 };
1410
1411 // AMDGPU specific notes. (Code Object V3)
1412 enum {
1413 // Note types with values between 0 and 31 (inclusive) are reserved.
1414 NT_AMDGPU_METADATA = 32
1415 };
1416
1417 enum {
1418 GNU_ABI_TAG_LINUX = 0,
1419 GNU_ABI_TAG_HURD = 1,
1420 GNU_ABI_TAG_SOLARIS = 2,
1421 GNU_ABI_TAG_FREEBSD = 3,
1422 GNU_ABI_TAG_NETBSD = 4,
1423 GNU_ABI_TAG_SYLLABLE = 5,
1424 GNU_ABI_TAG_NACL = 6,
1425 };
1426
1427 constexpr const char *ELF_NOTE_GNU = "GNU";
1428
1429 // Android packed relocation group flags.
1430 enum {
1431 RELOCATION_GROUPED_BY_INFO_FLAG = 1,
1432 RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2,
1433 RELOCATION_GROUPED_BY_ADDEND_FLAG = 4,
1434 RELOCATION_GROUP_HAS_ADDEND_FLAG = 8,
1435 };
1436
1437 // Compressed section header for ELF32.
1438 struct Elf32_Chdr {
1439 Elf32_Word ch_type;
1440 Elf32_Word ch_size;
1441 Elf32_Word ch_addralign;
1442 };
1443
1444 // Compressed section header for ELF64.
1445 struct Elf64_Chdr {
1446 Elf64_Word ch_type;
1447 Elf64_Word ch_reserved;
1448 Elf64_Xword ch_size;
1449 Elf64_Xword ch_addralign;
1450 };
1451
1452 // Node header for ELF32.
1453 struct Elf32_Nhdr {
1454 Elf32_Word n_namesz;
1455 Elf32_Word n_descsz;
1456 Elf32_Word n_type;
1457 };
1458
1459 // Node header for ELF64.
1460 struct Elf64_Nhdr {
1461 Elf64_Word n_namesz;
1462 Elf64_Word n_descsz;
1463 Elf64_Word n_type;
1464 };
1465
1466 // Legal values for ch_type field of compressed section header.
1467 enum {
1468 ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm.
1469 ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific.
1470 ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific.
1471 ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific.
1472 ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific.
1473 };
1474
1475 } // end namespace ELF
1476 } // end namespace llvm
1477
1478 #endif // LLVM_BINARYFORMAT_ELF_H
The low level virtual machine