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 "llvm/ADT/StringRef.h"
23 #include <cstdint>
24 #include <cstring>
25 #include <type_traits>
26
27 namespace llvm {
28 namespace ELF {
29
30 using Elf32_Addr = uint32_t; // Program address
31 using Elf32_Off = uint32_t; // File offset
32 using Elf32_Half = uint16_t;
33 using Elf32_Word = uint32_t;
34 using Elf32_Sword = int32_t;
35
36 using Elf64_Addr = uint64_t;
37 using Elf64_Off = uint64_t;
38 using Elf64_Half = uint16_t;
39 using Elf64_Word = uint32_t;
40 using Elf64_Sword = int32_t;
41 using Elf64_Xword = uint64_t;
42 using Elf64_Sxword = int64_t;
43
44 // Object file magic string.
45 static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'};
46
47 // e_ident size and indices.
48 enum {
49 EI_MAG0 = 0, // File identification index.
50 EI_MAG1 = 1, // File identification index.
51 EI_MAG2 = 2, // File identification index.
52 EI_MAG3 = 3, // File identification index.
53 EI_CLASS = 4, // File class.
54 EI_DATA = 5, // Data encoding.
55 EI_VERSION = 6, // File version.
56 EI_OSABI = 7, // OS/ABI identification.
57 EI_ABIVERSION = 8, // ABI version.
58 EI_PAD = 9, // Start of padding bytes.
59 EI_NIDENT = 16 // Number of bytes in e_ident.
60 };
61
62 struct Elf32_Ehdr {
63 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
64 Elf32_Half e_type; // Type of file (see ET_* below)
65 Elf32_Half e_machine; // Required architecture for this file (see EM_*)
66 Elf32_Word e_version; // Must be equal to 1
67 Elf32_Addr e_entry; // Address to jump to in order to start program
68 Elf32_Off e_phoff; // Program header table's file offset, in bytes
69 Elf32_Off e_shoff; // Section header table's file offset, in bytes
70 Elf32_Word e_flags; // Processor-specific flags
71 Elf32_Half e_ehsize; // Size of ELF header, in bytes
72 Elf32_Half e_phentsize; // Size of an entry in the program header table
73 Elf32_Half e_phnum; // Number of entries in the program header table
74 Elf32_Half e_shentsize; // Size of an entry in the section header table
75 Elf32_Half e_shnum; // Number of entries in the section header table
76 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table
77
checkMagicElf32_Ehdr78 bool checkMagic() const {
79 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
80 }
81
getFileClassElf32_Ehdr82 unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
getDataEncodingElf32_Ehdr83 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
84 };
85
86 // 64-bit ELF header. Fields are the same as for ELF32, but with different
87 // types (see above).
88 struct Elf64_Ehdr {
89 unsigned char e_ident[EI_NIDENT];
90 Elf64_Half e_type;
91 Elf64_Half e_machine;
92 Elf64_Word e_version;
93 Elf64_Addr e_entry;
94 Elf64_Off e_phoff;
95 Elf64_Off e_shoff;
96 Elf64_Word e_flags;
97 Elf64_Half e_ehsize;
98 Elf64_Half e_phentsize;
99 Elf64_Half e_phnum;
100 Elf64_Half e_shentsize;
101 Elf64_Half e_shnum;
102 Elf64_Half e_shstrndx;
103
checkMagicElf64_Ehdr104 bool checkMagic() const {
105 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
106 }
107
getFileClassElf64_Ehdr108 unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
getDataEncodingElf64_Ehdr109 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
110 };
111
112 // File types.
113 // See current registered ELF types at:
114 // http://www.sco.com/developers/gabi/latest/ch4.eheader.html
115 enum {
116 ET_NONE = 0, // No file type
117 ET_REL = 1, // Relocatable file
118 ET_EXEC = 2, // Executable file
119 ET_DYN = 3, // Shared object file
120 ET_CORE = 4, // Core file
121 ET_LOOS = 0xfe00, // Beginning of operating system-specific codes
122 ET_HIOS = 0xfeff, // Operating system-specific
123 ET_LOPROC = 0xff00, // Beginning of processor-specific codes
124 ET_HIPROC = 0xffff // Processor-specific
125 };
126
127 // Versioning
128 enum { EV_NONE = 0, EV_CURRENT = 1 };
129
130 // Machine architectures
131 // See current registered ELF machine architectures at:
132 // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html
133 enum {
134 EM_NONE = 0, // No machine
135 EM_M32 = 1, // AT&T WE 32100
136 EM_SPARC = 2, // SPARC
137 EM_386 = 3, // Intel 386
138 EM_68K = 4, // Motorola 68000
139 EM_88K = 5, // Motorola 88000
140 EM_IAMCU = 6, // Intel MCU
141 EM_860 = 7, // Intel 80860
142 EM_MIPS = 8, // MIPS R3000
143 EM_S370 = 9, // IBM System/370
144 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian
145 EM_PARISC = 15, // Hewlett-Packard PA-RISC
146 EM_VPP500 = 17, // Fujitsu VPP500
147 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC
148 EM_960 = 19, // Intel 80960
149 EM_PPC = 20, // PowerPC
150 EM_PPC64 = 21, // PowerPC64
151 EM_S390 = 22, // IBM System/390
152 EM_SPU = 23, // IBM SPU/SPC
153 EM_V800 = 36, // NEC V800
154 EM_FR20 = 37, // Fujitsu FR20
155 EM_RH32 = 38, // TRW RH-32
156 EM_RCE = 39, // Motorola RCE
157 EM_ARM = 40, // ARM
158 EM_ALPHA = 41, // DEC Alpha
159 EM_SH = 42, // Hitachi SH
160 EM_SPARCV9 = 43, // SPARC V9
161 EM_TRICORE = 44, // Siemens TriCore
162 EM_ARC = 45, // Argonaut RISC Core
163 EM_H8_300 = 46, // Hitachi H8/300
164 EM_H8_300H = 47, // Hitachi H8/300H
165 EM_H8S = 48, // Hitachi H8S
166 EM_H8_500 = 49, // Hitachi H8/500
167 EM_IA_64 = 50, // Intel IA-64 processor architecture
168 EM_MIPS_X = 51, // Stanford MIPS-X
169 EM_COLDFIRE = 52, // Motorola ColdFire
170 EM_68HC12 = 53, // Motorola M68HC12
171 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator
172 EM_PCP = 55, // Siemens PCP
173 EM_NCPU = 56, // Sony nCPU embedded RISC processor
174 EM_NDR1 = 57, // Denso NDR1 microprocessor
175 EM_STARCORE = 58, // Motorola Star*Core processor
176 EM_ME16 = 59, // Toyota ME16 processor
177 EM_ST100 = 60, // STMicroelectronics ST100 processor
178 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family
179 EM_X86_64 = 62, // AMD x86-64 architecture
180 EM_PDSP = 63, // Sony DSP Processor
181 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10
182 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11
183 EM_FX66 = 66, // Siemens FX66 microcontroller
184 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller
185 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller
186 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller
187 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller
188 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller
189 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller
190 EM_SVX = 73, // Silicon Graphics SVx
191 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller
192 EM_VAX = 75, // Digital VAX
193 EM_CRIS = 76, // Axis Communications 32-bit embedded processor
194 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor
195 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor
196 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor
197 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor
198 EM_HUANY = 81, // Harvard University machine-independent object files
199 EM_PRISM = 82, // SiTera Prism
200 EM_AVR = 83, // Atmel AVR 8-bit microcontroller
201 EM_FR30 = 84, // Fujitsu FR30
202 EM_D10V = 85, // Mitsubishi D10V
203 EM_D30V = 86, // Mitsubishi D30V
204 EM_V850 = 87, // NEC v850
205 EM_M32R = 88, // Mitsubishi M32R
206 EM_MN10300 = 89, // Matsushita MN10300
207 EM_MN10200 = 90, // Matsushita MN10200
208 EM_PJ = 91, // picoJava
209 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor
210 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old
211 // spelling/synonym: EM_ARC_A5)
212 EM_XTENSA = 94, // Tensilica Xtensa Architecture
213 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor
214 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor
215 EM_NS32K = 97, // National Semiconductor 32000 series
216 EM_TPC = 98, // Tenor Network TPC processor
217 EM_SNP1K = 99, // Trebia SNP 1000 processor
218 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200
219 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family
220 EM_MAX = 102, // MAX Processor
221 EM_CR = 103, // National Semiconductor CompactRISC microprocessor
222 EM_F2MC16 = 104, // Fujitsu F2MC16
223 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430
224 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor
225 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors
226 EM_SEP = 108, // Sharp embedded microprocessor
227 EM_ARCA = 109, // Arca RISC Microprocessor
228 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC
229 // of Peking University
230 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU
231 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor
232 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor
233 EM_CRX = 114, // National Semiconductor CompactRISC CRX
234 EM_XGATE = 115, // Motorola XGATE embedded processor
235 EM_C166 = 116, // Infineon C16x/XC16x processor
236 EM_M16C = 117, // Renesas M16C series microprocessors
237 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal
238 // Controller
239 EM_CE = 119, // Freescale Communication Engine RISC core
240 EM_M32C = 120, // Renesas M32C series microprocessors
241 EM_TSK3000 = 131, // Altium TSK3000 core
242 EM_RS08 = 132, // Freescale RS08 embedded processor
243 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP
244 // processors
245 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor
246 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor
247 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor
248 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor
249 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture
250 EM_SE_C17 = 139, // Seiko Epson C17 family
251 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family
252 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family
253 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family
254 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor
255 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor
256 EM_R32C = 162, // Renesas R32C series microprocessors
257 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family
258 EM_HEXAGON = 164, // Qualcomm Hexagon processor
259 EM_8051 = 165, // Intel 8051 and variants
260 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable
261 // and extensible RISC processors
262 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC
263 // processor family
264 EM_ECOG1 = 168, // Cyan Technology eCOG1X family
265 EM_ECOG1X = 168, // Cyan Technology eCOG1X family
266 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers
267 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor
268 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor
269 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture
270 EM_RX = 173, // Renesas RX family
271 EM_METAG = 174, // Imagination Technologies META processor
272 // architecture
273 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture
274 EM_ECOG16 = 176, // Cyan Technology eCOG16 family
275 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit
276 // microprocessor
277 EM_ETPU = 178, // Freescale Extended Time Processing Unit
278 EM_SLE9X = 179, // Infineon Technologies SLE9X core
279 EM_L10M = 180, // Intel L10M
280 EM_K10M = 181, // Intel K10M
281 EM_AARCH64 = 183, // ARM AArch64
282 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family
283 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller
284 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family
285 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family
286 EM_MICROBLAZE = 189, // Xilinx MicroBlaze 32-bit RISC soft processor core
287 EM_CUDA = 190, // NVIDIA CUDA architecture
288 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family
289 EM_CLOUDSHIELD = 192, // CloudShield architecture family
290 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family
291 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family
292 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2
293 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core
294 EM_RL78 = 197, // Renesas RL78 family
295 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor
296 EM_78KOR = 199, // Renesas 78KOR family
297 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC)
298 EM_BA1 = 201, // Beyond BA1 CPU architecture
299 EM_BA2 = 202, // Beyond BA2 CPU architecture
300 EM_XCORE = 203, // XMOS xCORE processor family
301 EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family
302 EM_INTEL205 = 205, // Reserved by Intel
303 EM_INTEL206 = 206, // Reserved by Intel
304 EM_INTEL207 = 207, // Reserved by Intel
305 EM_INTEL208 = 208, // Reserved by Intel
306 EM_INTEL209 = 209, // Reserved by Intel
307 EM_KM32 = 210, // KM211 KM32 32-bit processor
308 EM_KMX32 = 211, // KM211 KMX32 32-bit processor
309 EM_KMX16 = 212, // KM211 KMX16 16-bit processor
310 EM_KMX8 = 213, // KM211 KMX8 8-bit processor
311 EM_KVARC = 214, // KM211 KVARC processor
312 EM_CDP = 215, // Paneve CDP architecture family
313 EM_COGE = 216, // Cognitive Smart Memory Processor
314 EM_COOL = 217, // iCelero CoolEngine
315 EM_NORC = 218, // Nanoradio Optimized RISC
316 EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family
317 EM_AMDGPU = 224, // AMD GPU architecture
318 EM_RISCV = 243, // RISC-V
319 EM_LANAI = 244, // Lanai 32-bit processor
320 EM_BPF = 247, // Linux kernel bpf virtual machine
321 EM_VE = 251, // NEC SX-Aurora VE
322 EM_CSKY = 252, // C-SKY 32-bit processor
323 EM_LOONGARCH = 258, // LoongArch
324 };
325
326 // Object file classes.
327 enum {
328 ELFCLASSNONE = 0,
329 ELFCLASS32 = 1, // 32-bit object file
330 ELFCLASS64 = 2 // 64-bit object file
331 };
332
333 // Object file byte orderings.
334 enum {
335 ELFDATANONE = 0, // Invalid data encoding.
336 ELFDATA2LSB = 1, // Little-endian object file
337 ELFDATA2MSB = 2 // Big-endian object file
338 };
339
340 // OS ABI identification.
341 enum {
342 ELFOSABI_NONE = 0, // UNIX System V ABI
343 ELFOSABI_HPUX = 1, // HP-UX operating system
344 ELFOSABI_NETBSD = 2, // NetBSD
345 ELFOSABI_GNU = 3, // GNU/Linux
346 ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU.
347 ELFOSABI_HURD = 4, // GNU/Hurd
348 ELFOSABI_SOLARIS = 6, // Solaris
349 ELFOSABI_AIX = 7, // AIX
350 ELFOSABI_IRIX = 8, // IRIX
351 ELFOSABI_FREEBSD = 9, // FreeBSD
352 ELFOSABI_TRU64 = 10, // TRU64 UNIX
353 ELFOSABI_MODESTO = 11, // Novell Modesto
354 ELFOSABI_OPENBSD = 12, // OpenBSD
355 ELFOSABI_OPENVMS = 13, // OpenVMS
356 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel
357 ELFOSABI_AROS = 15, // AROS
358 ELFOSABI_FENIXOS = 16, // FenixOS
359 ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI
360 ELFOSABI_CUDA = 51, // NVIDIA CUDA architecture.
361 ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI
362 ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime
363 ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime
364 ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime
365 ELFOSABI_ARM = 97, // ARM
366 ELFOSABI_ARM_FDPIC = 65, // ARM FDPIC
367 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
368 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
369 ELFOSABI_STANDALONE = 255, // Standalone (embedded) application
370 ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI
371 };
372
373 // AMDGPU OS ABI Version identification.
374 enum {
375 // ELFABIVERSION_AMDGPU_HSA_V1 does not exist because OS ABI identification
376 // was never defined for V1.
377 ELFABIVERSION_AMDGPU_HSA_V2 = 0,
378 ELFABIVERSION_AMDGPU_HSA_V3 = 1,
379 ELFABIVERSION_AMDGPU_HSA_V4 = 2,
380 ELFABIVERSION_AMDGPU_HSA_V5 = 3,
381 ELFABIVERSION_AMDGPU_HSA_V6 = 4,
382 };
383
384 #define ELF_RELOC(name, value) name = value,
385
386 // X86_64 relocations.
387 enum {
388 #include "ELFRelocs/x86_64.def"
389 };
390
391 // i386 relocations.
392 enum {
393 #include "ELFRelocs/i386.def"
394 };
395
396 // ELF Relocation types for PPC32
397 enum {
398 #include "ELFRelocs/PowerPC.def"
399 };
400
401 // Specific e_flags for PPC64
402 enum {
403 // e_flags bits specifying ABI:
404 // 1 for original ABI using function descriptors,
405 // 2 for revised ABI without function descriptors,
406 // 0 for unspecified or not using any features affected by the differences.
407 EF_PPC64_ABI = 3
408 };
409
410 // Special values for the st_other field in the symbol table entry for PPC64.
411 enum {
412 STO_PPC64_LOCAL_BIT = 5,
413 STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT)
414 };
decodePPC64LocalEntryOffset(unsigned Other)415 static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) {
416 unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT;
417 return ((1 << Val) >> 2) << 2;
418 }
419
420 // ELF Relocation types for PPC64
421 enum {
422 #include "ELFRelocs/PowerPC64.def"
423 };
424
425 // ELF Relocation types for AArch64
426 enum {
427 #include "ELFRelocs/AArch64.def"
428 };
429
430 // Special values for the st_other field in the symbol table entry for AArch64.
431 enum {
432 // Symbol may follow different calling convention than base PCS.
433 STO_AARCH64_VARIANT_PCS = 0x80
434 };
435
436 // ARM Specific e_flags
437 enum : unsigned {
438 EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5
439 EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5
440 EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5
441 EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5
442 EF_ARM_BE8 = 0x00800000U,
443 EF_ARM_EABI_UNKNOWN = 0x00000000U,
444 EF_ARM_EABI_VER1 = 0x01000000U,
445 EF_ARM_EABI_VER2 = 0x02000000U,
446 EF_ARM_EABI_VER3 = 0x03000000U,
447 EF_ARM_EABI_VER4 = 0x04000000U,
448 EF_ARM_EABI_VER5 = 0x05000000U,
449 EF_ARM_EABIMASK = 0xFF000000U
450 };
451
452 // ELF Relocation types for ARM
453 enum {
454 #include "ELFRelocs/ARM.def"
455 };
456
457 // ARC Specific e_flags
458 enum : unsigned {
459 EF_ARC_MACH_MSK = 0x000000ff,
460 EF_ARC_OSABI_MSK = 0x00000f00,
461 E_ARC_MACH_ARC600 = 0x00000002,
462 E_ARC_MACH_ARC601 = 0x00000004,
463 E_ARC_MACH_ARC700 = 0x00000003,
464 EF_ARC_CPU_ARCV2EM = 0x00000005,
465 EF_ARC_CPU_ARCV2HS = 0x00000006,
466 E_ARC_OSABI_ORIG = 0x00000000,
467 E_ARC_OSABI_V2 = 0x00000200,
468 E_ARC_OSABI_V3 = 0x00000300,
469 E_ARC_OSABI_V4 = 0x00000400,
470 EF_ARC_PIC = 0x00000100
471 };
472
473 // ELF Relocation types for ARC
474 enum {
475 #include "ELFRelocs/ARC.def"
476 };
477
478 // AVR specific e_flags
479 enum : unsigned {
480 EF_AVR_ARCH_AVR1 = 1,
481 EF_AVR_ARCH_AVR2 = 2,
482 EF_AVR_ARCH_AVR25 = 25,
483 EF_AVR_ARCH_AVR3 = 3,
484 EF_AVR_ARCH_AVR31 = 31,
485 EF_AVR_ARCH_AVR35 = 35,
486 EF_AVR_ARCH_AVR4 = 4,
487 EF_AVR_ARCH_AVR5 = 5,
488 EF_AVR_ARCH_AVR51 = 51,
489 EF_AVR_ARCH_AVR6 = 6,
490 EF_AVR_ARCH_AVRTINY = 100,
491 EF_AVR_ARCH_XMEGA1 = 101,
492 EF_AVR_ARCH_XMEGA2 = 102,
493 EF_AVR_ARCH_XMEGA3 = 103,
494 EF_AVR_ARCH_XMEGA4 = 104,
495 EF_AVR_ARCH_XMEGA5 = 105,
496 EF_AVR_ARCH_XMEGA6 = 106,
497 EF_AVR_ARCH_XMEGA7 = 107,
498
499 EF_AVR_ARCH_MASK = 0x7f, // EF_AVR_ARCH_xxx selection mask
500
501 EF_AVR_LINKRELAX_PREPARED = 0x80, // The file is prepared for linker
502 // relaxation to be applied
503 };
504
505 // ELF Relocation types for AVR
506 enum {
507 #include "ELFRelocs/AVR.def"
508 };
509
510 // Mips Specific e_flags
511 enum : unsigned {
512 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
513 EF_MIPS_PIC = 0x00000002, // Position independent code
514 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
515 EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI
516 EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine
517 // in 32-bit mode
518 EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine
519 // but uses 64-bit FP registers
520 EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding
521
522 // ABI flags
523 EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
524 EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture.
525 EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode.
526 EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode.
527 EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant.
528
529 // MIPS machine variant
530 EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation.
531 EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900
532 EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010
533 EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100
534 EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650
535 EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120
536 EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181
537 EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1
538 EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon
539 EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr
540 EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2
541 EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3
542 EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400
543 EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900
544 EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500
545 EF_MIPS_MACH_9000 = 0x00990000, // Unknown
546 EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E
547 EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F
548 EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A
549 EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask
550
551 // ARCH_ASE
552 EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
553 EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions
554 EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions
555 EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags
556
557 // ARCH
558 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
559 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
560 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
561 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
562 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
563 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
564 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
565 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5
566 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5
567 EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6
568 EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6
569 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
570 };
571
572 // MIPS-specific section indexes
573 enum {
574 SHN_MIPS_ACOMMON = 0xff00, // Common symbols which are defined and allocated
575 SHN_MIPS_TEXT = 0xff01, // Not ABI compliant
576 SHN_MIPS_DATA = 0xff02, // Not ABI compliant
577 SHN_MIPS_SCOMMON = 0xff03, // Common symbols for global data area
578 SHN_MIPS_SUNDEFINED = 0xff04 // Undefined symbols for global data area
579 };
580
581 // ELF Relocation types for Mips
582 enum {
583 #include "ELFRelocs/Mips.def"
584 };
585
586 // Special values for the st_other field in the symbol table entry for MIPS.
587 enum {
588 STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional
589 STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record
590 STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC
591 STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips
592 STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16
593 };
594
595 // .MIPS.options section descriptor kinds
596 enum {
597 ODK_NULL = 0, // Undefined
598 ODK_REGINFO = 1, // Register usage information
599 ODK_EXCEPTIONS = 2, // Exception processing options
600 ODK_PAD = 3, // Section padding options
601 ODK_HWPATCH = 4, // Hardware patches applied
602 ODK_FILL = 5, // Linker fill value
603 ODK_TAGS = 6, // Space for tool identification
604 ODK_HWAND = 7, // Hardware AND patches applied
605 ODK_HWOR = 8, // Hardware OR patches applied
606 ODK_GP_GROUP = 9, // GP group to use for text/data sections
607 ODK_IDENT = 10, // ID information
608 ODK_PAGESIZE = 11 // Page size information
609 };
610
611 // Hexagon-specific e_flags
612 enum {
613 // Object processor version flags, bits[11:0]
614 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2
615 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3
616 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4
617 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5
618 EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55
619 EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60
620 EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62
621 EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65
622 EF_HEXAGON_MACH_V66 = 0x00000066, // Hexagon V66
623 EF_HEXAGON_MACH_V67 = 0x00000067, // Hexagon V67
624 EF_HEXAGON_MACH_V67T = 0x00008067, // Hexagon V67T
625 EF_HEXAGON_MACH_V68 = 0x00000068, // Hexagon V68
626 EF_HEXAGON_MACH_V69 = 0x00000069, // Hexagon V69
627 EF_HEXAGON_MACH_V71 = 0x00000071, // Hexagon V71
628 EF_HEXAGON_MACH_V71T = 0x00008071, // Hexagon V71T
629 EF_HEXAGON_MACH_V73 = 0x00000073, // Hexagon V73
630 EF_HEXAGON_MACH = 0x000003ff, // Hexagon V..
631
632 // Highest ISA version flags
633 EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0]
634 // of e_flags
635 EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA
636 EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA
637 EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA
638 EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA
639 EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA
640 EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA
641 EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA
642 EF_HEXAGON_ISA_V65 = 0x00000065, // Hexagon V65 ISA
643 EF_HEXAGON_ISA_V66 = 0x00000066, // Hexagon V66 ISA
644 EF_HEXAGON_ISA_V67 = 0x00000067, // Hexagon V67 ISA
645 EF_HEXAGON_ISA_V68 = 0x00000068, // Hexagon V68 ISA
646 EF_HEXAGON_ISA_V69 = 0x00000069, // Hexagon V69 ISA
647 EF_HEXAGON_ISA_V71 = 0x00000071, // Hexagon V71 ISA
648 EF_HEXAGON_ISA_V73 = 0x00000073, // Hexagon V73 ISA
649 EF_HEXAGON_ISA_V75 = 0x00000075, // Hexagon V75 ISA
650 EF_HEXAGON_ISA = 0x000003ff, // Hexagon V.. ISA
651 };
652
653 // Hexagon-specific section indexes for common small data
654 enum {
655 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes
656 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access
657 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access
658 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access
659 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access
660 };
661
662 // ELF Relocation types for Hexagon
663 enum {
664 #include "ELFRelocs/Hexagon.def"
665 };
666
667 // ELF Relocation type for Lanai.
668 enum {
669 #include "ELFRelocs/Lanai.def"
670 };
671
672 // RISCV Specific e_flags
673 enum : unsigned {
674 EF_RISCV_RVC = 0x0001,
675 EF_RISCV_FLOAT_ABI = 0x0006,
676 EF_RISCV_FLOAT_ABI_SOFT = 0x0000,
677 EF_RISCV_FLOAT_ABI_SINGLE = 0x0002,
678 EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004,
679 EF_RISCV_FLOAT_ABI_QUAD = 0x0006,
680 EF_RISCV_RVE = 0x0008,
681 EF_RISCV_TSO = 0x0010,
682 };
683
684 // ELF Relocation types for RISC-V
685 enum {
686 #include "ELFRelocs/RISCV.def"
687 };
688
689 enum {
690 // Symbol may follow different calling convention than the standard calling
691 // convention.
692 STO_RISCV_VARIANT_CC = 0x80
693 };
694
695 // ELF Relocation types for S390/zSeries
696 enum {
697 #include "ELFRelocs/SystemZ.def"
698 };
699
700 // ELF Relocation type for Sparc.
701 enum {
702 #include "ELFRelocs/Sparc.def"
703 };
704
705 // AMDGPU specific e_flags.
706 enum : unsigned {
707 // Processor selection mask for EF_AMDGPU_MACH_* values.
708 EF_AMDGPU_MACH = 0x0ff,
709
710 // Not specified processor.
711 EF_AMDGPU_MACH_NONE = 0x000,
712
713 // R600-based processors.
714
715 // Radeon HD 2000/3000 Series (R600).
716 EF_AMDGPU_MACH_R600_R600 = 0x001,
717 EF_AMDGPU_MACH_R600_R630 = 0x002,
718 EF_AMDGPU_MACH_R600_RS880 = 0x003,
719 EF_AMDGPU_MACH_R600_RV670 = 0x004,
720 // Radeon HD 4000 Series (R700).
721 EF_AMDGPU_MACH_R600_RV710 = 0x005,
722 EF_AMDGPU_MACH_R600_RV730 = 0x006,
723 EF_AMDGPU_MACH_R600_RV770 = 0x007,
724 // Radeon HD 5000 Series (Evergreen).
725 EF_AMDGPU_MACH_R600_CEDAR = 0x008,
726 EF_AMDGPU_MACH_R600_CYPRESS = 0x009,
727 EF_AMDGPU_MACH_R600_JUNIPER = 0x00a,
728 EF_AMDGPU_MACH_R600_REDWOOD = 0x00b,
729 EF_AMDGPU_MACH_R600_SUMO = 0x00c,
730 // Radeon HD 6000 Series (Northern Islands).
731 EF_AMDGPU_MACH_R600_BARTS = 0x00d,
732 EF_AMDGPU_MACH_R600_CAICOS = 0x00e,
733 EF_AMDGPU_MACH_R600_CAYMAN = 0x00f,
734 EF_AMDGPU_MACH_R600_TURKS = 0x010,
735
736 // Reserved for R600-based processors.
737 EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011,
738 EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f,
739
740 // First/last R600-based processors.
741 EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600,
742 EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS,
743
744 // AMDGCN-based processors.
745 // clang-format off
746 EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020,
747 EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021,
748 EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022,
749 EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023,
750 EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024,
751 EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025,
752 EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026,
753 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X27 = 0x027,
754 EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028,
755 EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029,
756 EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a,
757 EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b,
758 EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c,
759 EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d,
760 EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e,
761 EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f,
762 EF_AMDGPU_MACH_AMDGCN_GFX908 = 0x030,
763 EF_AMDGPU_MACH_AMDGCN_GFX909 = 0x031,
764 EF_AMDGPU_MACH_AMDGCN_GFX90C = 0x032,
765 EF_AMDGPU_MACH_AMDGCN_GFX1010 = 0x033,
766 EF_AMDGPU_MACH_AMDGCN_GFX1011 = 0x034,
767 EF_AMDGPU_MACH_AMDGCN_GFX1012 = 0x035,
768 EF_AMDGPU_MACH_AMDGCN_GFX1030 = 0x036,
769 EF_AMDGPU_MACH_AMDGCN_GFX1031 = 0x037,
770 EF_AMDGPU_MACH_AMDGCN_GFX1032 = 0x038,
771 EF_AMDGPU_MACH_AMDGCN_GFX1033 = 0x039,
772 EF_AMDGPU_MACH_AMDGCN_GFX602 = 0x03a,
773 EF_AMDGPU_MACH_AMDGCN_GFX705 = 0x03b,
774 EF_AMDGPU_MACH_AMDGCN_GFX805 = 0x03c,
775 EF_AMDGPU_MACH_AMDGCN_GFX1035 = 0x03d,
776 EF_AMDGPU_MACH_AMDGCN_GFX1034 = 0x03e,
777 EF_AMDGPU_MACH_AMDGCN_GFX90A = 0x03f,
778 EF_AMDGPU_MACH_AMDGCN_GFX940 = 0x040,
779 EF_AMDGPU_MACH_AMDGCN_GFX1100 = 0x041,
780 EF_AMDGPU_MACH_AMDGCN_GFX1013 = 0x042,
781 EF_AMDGPU_MACH_AMDGCN_GFX1150 = 0x043,
782 EF_AMDGPU_MACH_AMDGCN_GFX1103 = 0x044,
783 EF_AMDGPU_MACH_AMDGCN_GFX1036 = 0x045,
784 EF_AMDGPU_MACH_AMDGCN_GFX1101 = 0x046,
785 EF_AMDGPU_MACH_AMDGCN_GFX1102 = 0x047,
786 EF_AMDGPU_MACH_AMDGCN_GFX1200 = 0x048,
787 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X49 = 0x049,
788 EF_AMDGPU_MACH_AMDGCN_GFX1151 = 0x04a,
789 EF_AMDGPU_MACH_AMDGCN_GFX941 = 0x04b,
790 EF_AMDGPU_MACH_AMDGCN_GFX942 = 0x04c,
791 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X4D = 0x04d,
792 EF_AMDGPU_MACH_AMDGCN_GFX1201 = 0x04e,
793 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X4F = 0x04f,
794 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X50 = 0x050,
795 EF_AMDGPU_MACH_AMDGCN_GFX9_GENERIC = 0x051,
796 EF_AMDGPU_MACH_AMDGCN_GFX10_1_GENERIC = 0x052,
797 EF_AMDGPU_MACH_AMDGCN_GFX10_3_GENERIC = 0x053,
798 EF_AMDGPU_MACH_AMDGCN_GFX11_GENERIC = 0x054,
799 EF_AMDGPU_MACH_AMDGCN_GFX1152 = 0x055,
800 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X56 = 0x056,
801 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X57 = 0x057,
802 EF_AMDGPU_MACH_AMDGCN_RESERVED_0X58 = 0x058,
803 EF_AMDGPU_MACH_AMDGCN_GFX12_GENERIC = 0x059,
804 // clang-format on
805
806 // First/last AMDGCN-based processors.
807 EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600,
808 EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX12_GENERIC,
809
810 // Indicates if the "xnack" target feature is enabled for all code contained
811 // in the object.
812 //
813 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2.
814 EF_AMDGPU_FEATURE_XNACK_V2 = 0x01,
815 // Indicates if the trap handler is enabled for all code contained
816 // in the object.
817 //
818 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2.
819 EF_AMDGPU_FEATURE_TRAP_HANDLER_V2 = 0x02,
820
821 // Indicates if the "xnack" target feature is enabled for all code contained
822 // in the object.
823 //
824 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V3.
825 EF_AMDGPU_FEATURE_XNACK_V3 = 0x100,
826 // Indicates if the "sramecc" target feature is enabled for all code
827 // contained in the object.
828 //
829 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V3.
830 EF_AMDGPU_FEATURE_SRAMECC_V3 = 0x200,
831
832 // XNACK selection mask for EF_AMDGPU_FEATURE_XNACK_* values.
833 //
834 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V4.
835 EF_AMDGPU_FEATURE_XNACK_V4 = 0x300,
836 // XNACK is not supported.
837 EF_AMDGPU_FEATURE_XNACK_UNSUPPORTED_V4 = 0x000,
838 // XNACK is any/default/unspecified.
839 EF_AMDGPU_FEATURE_XNACK_ANY_V4 = 0x100,
840 // XNACK is off.
841 EF_AMDGPU_FEATURE_XNACK_OFF_V4 = 0x200,
842 // XNACK is on.
843 EF_AMDGPU_FEATURE_XNACK_ON_V4 = 0x300,
844
845 // SRAMECC selection mask for EF_AMDGPU_FEATURE_SRAMECC_* values.
846 //
847 // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V4.
848 EF_AMDGPU_FEATURE_SRAMECC_V4 = 0xc00,
849 // SRAMECC is not supported.
850 EF_AMDGPU_FEATURE_SRAMECC_UNSUPPORTED_V4 = 0x000,
851 // SRAMECC is any/default/unspecified.
852 EF_AMDGPU_FEATURE_SRAMECC_ANY_V4 = 0x400,
853 // SRAMECC is off.
854 EF_AMDGPU_FEATURE_SRAMECC_OFF_V4 = 0x800,
855 // SRAMECC is on.
856 EF_AMDGPU_FEATURE_SRAMECC_ON_V4 = 0xc00,
857
858 // Generic target versioning. This is contained in the list byte of EFLAGS.
859 EF_AMDGPU_GENERIC_VERSION = 0xff000000,
860 EF_AMDGPU_GENERIC_VERSION_OFFSET = 24,
861 EF_AMDGPU_GENERIC_VERSION_MIN = 1,
862 EF_AMDGPU_GENERIC_VERSION_MAX = 0xff,
863 };
864
865 // ELF Relocation types for AMDGPU
866 enum {
867 #include "ELFRelocs/AMDGPU.def"
868 };
869
870 // NVPTX specific e_flags.
871 enum : unsigned {
872 // Processor selection mask for EF_CUDA_SM* values.
873 EF_CUDA_SM = 0xff,
874
875 // SM based processor values.
876 EF_CUDA_SM20 = 0x14,
877 EF_CUDA_SM21 = 0x15,
878 EF_CUDA_SM30 = 0x1e,
879 EF_CUDA_SM32 = 0x20,
880 EF_CUDA_SM35 = 0x23,
881 EF_CUDA_SM37 = 0x25,
882 EF_CUDA_SM50 = 0x32,
883 EF_CUDA_SM52 = 0x34,
884 EF_CUDA_SM53 = 0x35,
885 EF_CUDA_SM60 = 0x3c,
886 EF_CUDA_SM61 = 0x3d,
887 EF_CUDA_SM62 = 0x3e,
888 EF_CUDA_SM70 = 0x46,
889 EF_CUDA_SM72 = 0x48,
890 EF_CUDA_SM75 = 0x4b,
891 EF_CUDA_SM80 = 0x50,
892 EF_CUDA_SM86 = 0x56,
893 EF_CUDA_SM87 = 0x57,
894 EF_CUDA_SM89 = 0x59,
895 // The sm_90a variant uses the same machine flag.
896 EF_CUDA_SM90 = 0x5a,
897
898 // Unified texture binding is enabled.
899 EF_CUDA_TEXMODE_UNIFIED = 0x100,
900 // Independent texture binding is enabled.
901 EF_CUDA_TEXMODE_INDEPENDANT = 0x200,
902 // The target is using 64-bit addressing.
903 EF_CUDA_64BIT_ADDRESS = 0x400,
904 // Set when using the sm_90a processor.
905 EF_CUDA_ACCELERATORS = 0x800,
906 // Undocumented software feature.
907 EF_CUDA_SW_FLAG_V2 = 0x1000,
908
909 // Virtual processor selection mask for EF_CUDA_VIRTUAL_SM* values.
910 EF_CUDA_VIRTUAL_SM = 0xff0000,
911 };
912
913 // ELF Relocation types for BPF
914 enum {
915 #include "ELFRelocs/BPF.def"
916 };
917
918 // ELF Relocation types for M68k
919 enum {
920 #include "ELFRelocs/M68k.def"
921 };
922
923 // MSP430 specific e_flags
924 enum : unsigned {
925 EF_MSP430_MACH_MSP430x11 = 11,
926 EF_MSP430_MACH_MSP430x11x1 = 110,
927 EF_MSP430_MACH_MSP430x12 = 12,
928 EF_MSP430_MACH_MSP430x13 = 13,
929 EF_MSP430_MACH_MSP430x14 = 14,
930 EF_MSP430_MACH_MSP430x15 = 15,
931 EF_MSP430_MACH_MSP430x16 = 16,
932 EF_MSP430_MACH_MSP430x20 = 20,
933 EF_MSP430_MACH_MSP430x22 = 22,
934 EF_MSP430_MACH_MSP430x23 = 23,
935 EF_MSP430_MACH_MSP430x24 = 24,
936 EF_MSP430_MACH_MSP430x26 = 26,
937 EF_MSP430_MACH_MSP430x31 = 31,
938 EF_MSP430_MACH_MSP430x32 = 32,
939 EF_MSP430_MACH_MSP430x33 = 33,
940 EF_MSP430_MACH_MSP430x41 = 41,
941 EF_MSP430_MACH_MSP430x42 = 42,
942 EF_MSP430_MACH_MSP430x43 = 43,
943 EF_MSP430_MACH_MSP430x44 = 44,
944 EF_MSP430_MACH_MSP430X = 45,
945 EF_MSP430_MACH_MSP430x46 = 46,
946 EF_MSP430_MACH_MSP430x47 = 47,
947 EF_MSP430_MACH_MSP430x54 = 54,
948 };
949
950 // ELF Relocation types for MSP430
951 enum {
952 #include "ELFRelocs/MSP430.def"
953 };
954
955 // ELF Relocation type for VE.
956 enum {
957 #include "ELFRelocs/VE.def"
958 };
959
960 // CSKY Specific e_flags
961 enum : unsigned {
962 EF_CSKY_801 = 0xa,
963 EF_CSKY_802 = 0x10,
964 EF_CSKY_803 = 0x9,
965 EF_CSKY_805 = 0x11,
966 EF_CSKY_807 = 0x6,
967 EF_CSKY_810 = 0x8,
968 EF_CSKY_860 = 0xb,
969 EF_CSKY_800 = 0x1f,
970 EF_CSKY_FLOAT = 0x2000,
971 EF_CSKY_DSP = 0x4000,
972 EF_CSKY_ABIV2 = 0x20000000,
973 EF_CSKY_EFV1 = 0x1000000,
974 EF_CSKY_EFV2 = 0x2000000,
975 EF_CSKY_EFV3 = 0x3000000
976 };
977
978 // ELF Relocation types for CSKY
979 enum {
980 #include "ELFRelocs/CSKY.def"
981 };
982
983 // LoongArch Specific e_flags
984 enum : unsigned {
985 // Definitions from LoongArch ELF psABI v2.01.
986 // Reference: https://github.com/loongson/LoongArch-Documentation
987 // (commit hash 296de4def055c871809068e0816325a4ac04eb12)
988
989 // Base ABI Modifiers
990 EF_LOONGARCH_ABI_SOFT_FLOAT = 0x1,
991 EF_LOONGARCH_ABI_SINGLE_FLOAT = 0x2,
992 EF_LOONGARCH_ABI_DOUBLE_FLOAT = 0x3,
993 EF_LOONGARCH_ABI_MODIFIER_MASK = 0x7,
994
995 // Object file ABI versions
996 EF_LOONGARCH_OBJABI_V0 = 0x0,
997 EF_LOONGARCH_OBJABI_V1 = 0x40,
998 EF_LOONGARCH_OBJABI_MASK = 0xC0,
999 };
1000
1001 // ELF Relocation types for LoongArch
1002 enum {
1003 #include "ELFRelocs/LoongArch.def"
1004 };
1005
1006 // Xtensa specific e_flags
1007 enum : unsigned {
1008 // Four-bit Xtensa machine type mask.
1009 EF_XTENSA_MACH = 0x0000000f,
1010 // Various CPU types.
1011 EF_XTENSA_MACH_NONE = 0x00000000, // A base Xtensa implementation
1012 EF_XTENSA_XT_INSN = 0x00000100,
1013 EF_XTENSA_XT_LIT = 0x00000200,
1014 };
1015
1016 // ELF Relocation types for Xtensa
1017 enum {
1018 #include "ELFRelocs/Xtensa.def"
1019 };
1020
1021 #undef ELF_RELOC
1022
1023 // Section header.
1024 struct Elf32_Shdr {
1025 Elf32_Word sh_name; // Section name (index into string table)
1026 Elf32_Word sh_type; // Section type (SHT_*)
1027 Elf32_Word sh_flags; // Section flags (SHF_*)
1028 Elf32_Addr sh_addr; // Address where section is to be loaded
1029 Elf32_Off sh_offset; // File offset of section data, in bytes
1030 Elf32_Word sh_size; // Size of section, in bytes
1031 Elf32_Word sh_link; // Section type-specific header table index link
1032 Elf32_Word sh_info; // Section type-specific extra information
1033 Elf32_Word sh_addralign; // Section address alignment
1034 Elf32_Word sh_entsize; // Size of records contained within the section
1035 };
1036
1037 // Section header for ELF64 - same fields as ELF32, different types.
1038 struct Elf64_Shdr {
1039 Elf64_Word sh_name;
1040 Elf64_Word sh_type;
1041 Elf64_Xword sh_flags;
1042 Elf64_Addr sh_addr;
1043 Elf64_Off sh_offset;
1044 Elf64_Xword sh_size;
1045 Elf64_Word sh_link;
1046 Elf64_Word sh_info;
1047 Elf64_Xword sh_addralign;
1048 Elf64_Xword sh_entsize;
1049 };
1050
1051 // Special section indices.
1052 enum {
1053 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
1054 SHN_LORESERVE = 0xff00, // Lowest reserved index
1055 SHN_LOPROC = 0xff00, // Lowest processor-specific index
1056 SHN_HIPROC = 0xff1f, // Highest processor-specific index
1057 SHN_LOOS = 0xff20, // Lowest operating system-specific index
1058 SHN_HIOS = 0xff3f, // Highest operating system-specific index
1059 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
1060 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
1061 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
1062 SHN_HIRESERVE = 0xffff // Highest reserved index
1063 };
1064
1065 // Section types.
1066 enum : unsigned {
1067 SHT_NULL = 0, // No associated section (inactive entry).
1068 SHT_PROGBITS = 1, // Program-defined contents.
1069 SHT_SYMTAB = 2, // Symbol table.
1070 SHT_STRTAB = 3, // String table.
1071 SHT_RELA = 4, // Relocation entries; explicit addends.
1072 SHT_HASH = 5, // Symbol hash table.
1073 SHT_DYNAMIC = 6, // Information for dynamic linking.
1074 SHT_NOTE = 7, // Information about the file.
1075 SHT_NOBITS = 8, // Data occupies no space in the file.
1076 SHT_REL = 9, // Relocation entries; no explicit addends.
1077 SHT_SHLIB = 10, // Reserved.
1078 SHT_DYNSYM = 11, // Symbol table.
1079 SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
1080 SHT_FINI_ARRAY = 15, // Pointers to termination functions.
1081 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
1082 SHT_GROUP = 17, // Section group.
1083 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
1084 // Experimental support for SHT_RELR sections. For details, see proposal
1085 // at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
1086 SHT_RELR = 19, // Relocation entries; only offsets.
1087 // TODO: Experimental CREL relocations. LLVM will change the value and
1088 // break compatibility in the future.
1089 SHT_CREL = 0x40000014,
1090 SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
1091 // Android packed relocation section types.
1092 // https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37
1093 SHT_ANDROID_REL = 0x60000001,
1094 SHT_ANDROID_RELA = 0x60000002,
1095 SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table.
1096 SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options.
1097 SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols
1098 // for safe ICF.
1099 SHT_LLVM_DEPENDENT_LIBRARIES =
1100 0x6fff4c04, // LLVM Dependent Library Specifiers.
1101 SHT_LLVM_SYMPART = 0x6fff4c05, // Symbol partition specification.
1102 SHT_LLVM_PART_EHDR = 0x6fff4c06, // ELF header for loadable partition.
1103 SHT_LLVM_PART_PHDR = 0x6fff4c07, // Phdrs for loadable partition.
1104 SHT_LLVM_BB_ADDR_MAP_V0 =
1105 0x6fff4c08, // LLVM Basic Block Address Map (old version kept for
1106 // backward-compatibility).
1107 SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c09, // LLVM Call Graph Profile.
1108 SHT_LLVM_BB_ADDR_MAP = 0x6fff4c0a, // LLVM Basic Block Address Map.
1109 SHT_LLVM_OFFLOADING = 0x6fff4c0b, // LLVM device offloading data.
1110 SHT_LLVM_LTO = 0x6fff4c0c, // .llvm.lto for fat LTO.
1111 // Android's experimental support for SHT_RELR sections.
1112 // https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512
1113 SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets.
1114 SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes.
1115 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
1116 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
1117 SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
1118 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
1119 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
1120 SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type.
1121 // Fixme: All this is duplicated in MCSectionELF. Why??
1122 // Exception Index table
1123 SHT_ARM_EXIDX = 0x70000001U,
1124 // BPABI DLL dynamic linking pre-emption map
1125 SHT_ARM_PREEMPTMAP = 0x70000002U,
1126 // Object file compatibility attributes
1127 SHT_ARM_ATTRIBUTES = 0x70000003U,
1128 SHT_ARM_DEBUGOVERLAY = 0x70000004U,
1129 SHT_ARM_OVERLAYSECTION = 0x70000005U,
1130 // Special aarch64-specific section for MTE support, as described in:
1131 // https://github.com/ARM-software/abi-aa/blob/main/pauthabielf64/pauthabielf64.rst#section-types
1132 SHT_AARCH64_AUTH_RELR = 0x70000004U,
1133 // Special aarch64-specific sections for MTE support, as described in:
1134 // https://github.com/ARM-software/abi-aa/blob/main/memtagabielf64/memtagabielf64.rst#7section-types
1135 SHT_AARCH64_MEMTAG_GLOBALS_STATIC = 0x70000007U,
1136 SHT_AARCH64_MEMTAG_GLOBALS_DYNAMIC = 0x70000008U,
1137 SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in
1138 // this section based on their sizes
1139 SHT_X86_64_UNWIND = 0x70000001, // Unwind information
1140
1141 SHT_MIPS_REGINFO = 0x70000006, // Register usage information
1142 SHT_MIPS_OPTIONS = 0x7000000d, // General options
1143 SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section.
1144 SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information.
1145
1146 SHT_MSP430_ATTRIBUTES = 0x70000003U,
1147
1148 SHT_RISCV_ATTRIBUTES = 0x70000003U,
1149
1150 SHT_CSKY_ATTRIBUTES = 0x70000001U,
1151
1152 SHT_HEXAGON_ATTRIBUTES = 0x70000003U,
1153
1154 SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type.
1155 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
1156 SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
1157 };
1158
1159 // Section flags.
1160 enum : unsigned {
1161 // Section data should be writable during execution.
1162 SHF_WRITE = 0x1,
1163
1164 // Section occupies memory during program execution.
1165 SHF_ALLOC = 0x2,
1166
1167 // Section contains executable machine instructions.
1168 SHF_EXECINSTR = 0x4,
1169
1170 // The data in this section may be merged.
1171 SHF_MERGE = 0x10,
1172
1173 // The data in this section is null-terminated strings.
1174 SHF_STRINGS = 0x20,
1175
1176 // A field in this section holds a section header table index.
1177 SHF_INFO_LINK = 0x40U,
1178
1179 // Adds special ordering requirements for link editors.
1180 SHF_LINK_ORDER = 0x80U,
1181
1182 // This section requires special OS-specific processing to avoid incorrect
1183 // behavior.
1184 SHF_OS_NONCONFORMING = 0x100U,
1185
1186 // This section is a member of a section group.
1187 SHF_GROUP = 0x200U,
1188
1189 // This section holds Thread-Local Storage.
1190 SHF_TLS = 0x400U,
1191
1192 // Identifies a section containing compressed data.
1193 SHF_COMPRESSED = 0x800U,
1194
1195 // This section should not be garbage collected by the linker.
1196 SHF_GNU_RETAIN = 0x200000,
1197
1198 // This section is excluded from the final executable or shared library.
1199 SHF_EXCLUDE = 0x80000000U,
1200
1201 // Start of target-specific flags.
1202
1203 SHF_MASKOS = 0x0ff00000,
1204
1205 // Solaris equivalent of SHF_GNU_RETAIN.
1206 SHF_SUNW_NODISCARD = 0x00100000,
1207
1208 // Bits indicating processor-specific flags.
1209 SHF_MASKPROC = 0xf0000000,
1210
1211 /// All sections with the "d" flag are grouped together by the linker to form
1212 /// the data section and the dp register is set to the start of the section by
1213 /// the boot code.
1214 XCORE_SHF_DP_SECTION = 0x10000000,
1215
1216 /// All sections with the "c" flag are grouped together by the linker to form
1217 /// the constant pool and the cp register is set to the start of the constant
1218 /// pool by the boot code.
1219 XCORE_SHF_CP_SECTION = 0x20000000,
1220
1221 // If an object file section does not have this flag set, then it may not hold
1222 // more than 2GB and can be freely referred to in objects using smaller code
1223 // models. Otherwise, only objects using larger code models can refer to them.
1224 // For example, a medium code model object can refer to data in a section that
1225 // sets this flag besides being able to refer to data in a section that does
1226 // not set it; likewise, a small code model object can refer only to code in a
1227 // section that does not set this flag.
1228 SHF_X86_64_LARGE = 0x10000000,
1229
1230 // All sections with the GPREL flag are grouped into a global data area
1231 // for faster accesses
1232 SHF_HEX_GPREL = 0x10000000,
1233
1234 // Section contains text/data which may be replicated in other sections.
1235 // Linker must retain only one copy.
1236 SHF_MIPS_NODUPES = 0x01000000,
1237
1238 // Linker must generate implicit hidden weak names.
1239 SHF_MIPS_NAMES = 0x02000000,
1240
1241 // Section data local to process.
1242 SHF_MIPS_LOCAL = 0x04000000,
1243
1244 // Do not strip this section.
1245 SHF_MIPS_NOSTRIP = 0x08000000,
1246
1247 // Section must be part of global data area.
1248 SHF_MIPS_GPREL = 0x10000000,
1249
1250 // This section should be merged.
1251 SHF_MIPS_MERGE = 0x20000000,
1252
1253 // Address size to be inferred from section entry size.
1254 SHF_MIPS_ADDR = 0x40000000,
1255
1256 // Section data is string data by default.
1257 SHF_MIPS_STRING = 0x80000000,
1258
1259 // Make code section unreadable when in execute-only mode
1260 SHF_ARM_PURECODE = 0x20000000
1261 };
1262
1263 // Section Group Flags
1264 enum : unsigned {
1265 GRP_COMDAT = 0x1,
1266 GRP_MASKOS = 0x0ff00000,
1267 GRP_MASKPROC = 0xf0000000
1268 };
1269
1270 // Symbol table entries for ELF32.
1271 struct Elf32_Sym {
1272 Elf32_Word st_name; // Symbol name (index into string table)
1273 Elf32_Addr st_value; // Value or address associated with the symbol
1274 Elf32_Word st_size; // Size of the symbol
1275 unsigned char st_info; // Symbol's type and binding attributes
1276 unsigned char st_other; // Must be zero; reserved
1277 Elf32_Half st_shndx; // Which section (header table index) it's defined in
1278
1279 // These accessors and mutators correspond to the ELF32_ST_BIND,
1280 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
getBindingElf32_Sym1281 unsigned char getBinding() const { return st_info >> 4; }
getTypeElf32_Sym1282 unsigned char getType() const { return st_info & 0x0f; }
setBindingElf32_Sym1283 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
setTypeElf32_Sym1284 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
setBindingAndTypeElf32_Sym1285 void setBindingAndType(unsigned char b, unsigned char t) {
1286 st_info = (b << 4) + (t & 0x0f);
1287 }
1288 };
1289
1290 // Symbol table entries for ELF64.
1291 struct Elf64_Sym {
1292 Elf64_Word st_name; // Symbol name (index into string table)
1293 unsigned char st_info; // Symbol's type and binding attributes
1294 unsigned char st_other; // Must be zero; reserved
1295 Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
1296 Elf64_Addr st_value; // Value or address associated with the symbol
1297 Elf64_Xword st_size; // Size of the symbol
1298
1299 // These accessors and mutators are identical to those defined for ELF32
1300 // symbol table entries.
getBindingElf64_Sym1301 unsigned char getBinding() const { return st_info >> 4; }
getTypeElf64_Sym1302 unsigned char getType() const { return st_info & 0x0f; }
setBindingElf64_Sym1303 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
setTypeElf64_Sym1304 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
setBindingAndTypeElf64_Sym1305 void setBindingAndType(unsigned char b, unsigned char t) {
1306 st_info = (b << 4) + (t & 0x0f);
1307 }
1308 };
1309
1310 // The size (in bytes) of symbol table entries.
1311 enum {
1312 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
1313 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
1314 };
1315
1316 // Symbol bindings.
1317 enum {
1318 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
1319 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
1320 STB_WEAK = 2, // Weak symbol, like global but lower-precedence
1321 STB_GNU_UNIQUE = 10,
1322 STB_LOOS = 10, // Lowest operating system-specific binding type
1323 STB_HIOS = 12, // Highest operating system-specific binding type
1324 STB_LOPROC = 13, // Lowest processor-specific binding type
1325 STB_HIPROC = 15 // Highest processor-specific binding type
1326 };
1327
1328 // Symbol types.
1329 enum {
1330 STT_NOTYPE = 0, // Symbol's type is not specified
1331 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
1332 STT_FUNC = 2, // Symbol is executable code (function, etc.)
1333 STT_SECTION = 3, // Symbol refers to a section
1334 STT_FILE = 4, // Local, absolute symbol that refers to a file
1335 STT_COMMON = 5, // An uninitialized common block
1336 STT_TLS = 6, // Thread local data object
1337 STT_GNU_IFUNC = 10, // GNU indirect function
1338 STT_LOOS = 10, // Lowest operating system-specific symbol type
1339 STT_HIOS = 12, // Highest operating system-specific symbol type
1340 STT_LOPROC = 13, // Lowest processor-specific symbol type
1341 STT_HIPROC = 15, // Highest processor-specific symbol type
1342
1343 // AMDGPU symbol types
1344 STT_AMDGPU_HSA_KERNEL = 10
1345 };
1346
1347 enum {
1348 STV_DEFAULT = 0, // Visibility is specified by binding type
1349 STV_INTERNAL = 1, // Defined by processor supplements
1350 STV_HIDDEN = 2, // Not visible to other components
1351 STV_PROTECTED = 3 // Visible in other components but not preemptable
1352 };
1353
1354 // Symbol number.
1355 enum { STN_UNDEF = 0 };
1356
1357 // Special relocation symbols used in the MIPS64 ELF relocation entries
1358 enum {
1359 RSS_UNDEF = 0, // None
1360 RSS_GP = 1, // Value of gp
1361 RSS_GP0 = 2, // Value of gp used to create object being relocated
1362 RSS_LOC = 3 // Address of location being relocated
1363 };
1364
1365 // Relocation entry, without explicit addend.
1366 struct Elf32_Rel {
1367 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1368 Elf32_Word r_info; // Symbol table index and type of relocation to apply
1369
1370 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1371 // and ELF32_R_INFO macros defined in the ELF specification:
getSymbolElf32_Rel1372 Elf32_Word getSymbol() const { return (r_info >> 8); }
getTypeElf32_Rel1373 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
setSymbolElf32_Rel1374 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
setTypeElf32_Rel1375 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf32_Rel1376 void setSymbolAndType(Elf32_Word s, unsigned char t) {
1377 r_info = (s << 8) + t;
1378 }
1379 };
1380
1381 // Relocation entry with explicit addend.
1382 struct Elf32_Rela {
1383 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
1384 Elf32_Word r_info; // Symbol table index and type of relocation to apply
1385 Elf32_Sword r_addend; // Compute value for relocatable field by adding this
1386
1387 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
1388 // and ELF32_R_INFO macros defined in the ELF specification:
getSymbolElf32_Rela1389 Elf32_Word getSymbol() const { return (r_info >> 8); }
getTypeElf32_Rela1390 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
setSymbolElf32_Rela1391 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
setTypeElf32_Rela1392 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf32_Rela1393 void setSymbolAndType(Elf32_Word s, unsigned char t) {
1394 r_info = (s << 8) + t;
1395 }
1396 };
1397
1398 // Relocation entry without explicit addend or info (relative relocations only).
1399 typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations
1400
1401 // Relocation entry, without explicit addend.
1402 struct Elf64_Rel {
1403 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1404 Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1405
1406 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1407 // and ELF64_R_INFO macros defined in the ELF specification:
getSymbolElf64_Rel1408 Elf64_Word getSymbol() const { return (r_info >> 32); }
getTypeElf64_Rel1409 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
setSymbolElf64_Rel1410 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
setTypeElf64_Rel1411 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf64_Rel1412 void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1413 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
1414 }
1415 };
1416
1417 // Relocation entry with explicit addend.
1418 struct Elf64_Rela {
1419 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
1420 Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
1421 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
1422
1423 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
1424 // and ELF64_R_INFO macros defined in the ELF specification:
getSymbolElf64_Rela1425 Elf64_Word getSymbol() const { return (r_info >> 32); }
getTypeElf64_Rela1426 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
setSymbolElf64_Rela1427 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
setTypeElf64_Rela1428 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
setSymbolAndTypeElf64_Rela1429 void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
1430 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
1431 }
1432 };
1433
1434 // In-memory representation of CREL. The serialized representation uses LEB128.
1435 template <bool Is64> struct Elf_Crel {
1436 std::conditional_t<Is64, uint64_t, uint32_t> r_offset;
1437 uint32_t r_symidx;
1438 uint32_t r_type;
1439 std::conditional_t<Is64, int64_t, int32_t> r_addend;
1440 };
1441
1442 // Relocation entry without explicit addend or info (relative relocations only).
1443 typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations
1444
1445 // Program header for ELF32.
1446 struct Elf32_Phdr {
1447 Elf32_Word p_type; // Type of segment
1448 Elf32_Off p_offset; // File offset where segment is located, in bytes
1449 Elf32_Addr p_vaddr; // Virtual address of beginning of segment
1450 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
1451 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
1452 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
1453 Elf32_Word p_flags; // Segment flags
1454 Elf32_Word p_align; // Segment alignment constraint
1455 };
1456
1457 // Program header for ELF64.
1458 struct Elf64_Phdr {
1459 Elf64_Word p_type; // Type of segment
1460 Elf64_Word p_flags; // Segment flags
1461 Elf64_Off p_offset; // File offset where segment is located, in bytes
1462 Elf64_Addr p_vaddr; // Virtual address of beginning of segment
1463 Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific)
1464 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
1465 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
1466 Elf64_Xword p_align; // Segment alignment constraint
1467 };
1468
1469 // Segment types.
1470 enum {
1471 PT_NULL = 0, // Unused segment.
1472 PT_LOAD = 1, // Loadable segment.
1473 PT_DYNAMIC = 2, // Dynamic linking information.
1474 PT_INTERP = 3, // Interpreter pathname.
1475 PT_NOTE = 4, // Auxiliary information.
1476 PT_SHLIB = 5, // Reserved.
1477 PT_PHDR = 6, // The program header table itself.
1478 PT_TLS = 7, // The thread-local storage template.
1479 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
1480 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
1481 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
1482 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type.
1483
1484 // x86-64 program header types.
1485 // These all contain stack unwind tables.
1486 PT_GNU_EH_FRAME = 0x6474e550,
1487 PT_SUNW_EH_FRAME = 0x6474e550,
1488 PT_SUNW_UNWIND = 0x6464e550,
1489
1490 PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
1491 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
1492 PT_GNU_PROPERTY = 0x6474e553, // .note.gnu.property notes sections.
1493
1494 PT_OPENBSD_MUTABLE = 0x65a3dbe5, // Like bss, but not immutable.
1495 PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data.
1496 PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations.
1497 PT_OPENBSD_NOBTCFI = 0x65a3dbe8, // Do not enforce branch target CFI.
1498 PT_OPENBSD_SYSCALLS = 0x65a3dbe9, // System call sites.
1499 PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments.
1500
1501 // ARM program header types.
1502 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
1503 // These all contain stack unwind tables.
1504 PT_ARM_EXIDX = 0x70000001,
1505 PT_ARM_UNWIND = 0x70000001,
1506 // MTE memory tag segment type
1507 PT_AARCH64_MEMTAG_MTE = 0x70000002,
1508
1509 // MIPS program header types.
1510 PT_MIPS_REGINFO = 0x70000000, // Register usage information.
1511 PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table.
1512 PT_MIPS_OPTIONS = 0x70000002, // Options segment.
1513 PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment.
1514
1515 // RISCV program header types.
1516 PT_RISCV_ATTRIBUTES = 0x70000003,
1517 };
1518
1519 // Segment flag bits.
1520 enum : unsigned {
1521 PF_X = 1, // Execute
1522 PF_W = 2, // Write
1523 PF_R = 4, // Read
1524 PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics.
1525 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1526 };
1527
1528 // Dynamic table entry for ELF32.
1529 struct Elf32_Dyn {
1530 Elf32_Sword d_tag; // Type of dynamic table entry.
1531 union {
1532 Elf32_Word d_val; // Integer value of entry.
1533 Elf32_Addr d_ptr; // Pointer value of entry.
1534 } d_un;
1535 };
1536
1537 // Dynamic table entry for ELF64.
1538 struct Elf64_Dyn {
1539 Elf64_Sxword d_tag; // Type of dynamic table entry.
1540 union {
1541 Elf64_Xword d_val; // Integer value of entry.
1542 Elf64_Addr d_ptr; // Pointer value of entry.
1543 } d_un;
1544 };
1545
1546 // Dynamic table entry tags.
1547 enum {
1548 #define DYNAMIC_TAG(name, value) DT_##name = value,
1549 #include "DynamicTags.def"
1550 #undef DYNAMIC_TAG
1551 };
1552
1553 // DT_FLAGS values.
1554 enum {
1555 DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
1556 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
1557 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
1558 DF_BIND_NOW = 0x08, // Process all relocations on load.
1559 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
1560 };
1561
1562 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1563 enum {
1564 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
1565 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
1566 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
1567 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
1568 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
1569 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
1570 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
1571 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
1572 DF_1_DIRECT = 0x00000100, // Direct binding enabled.
1573 DF_1_TRANS = 0x00000200,
1574 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
1575 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
1576 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
1577 DF_1_CONFALT = 0x00002000, // Configuration alternative created.
1578 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
1579 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1580 DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time.
1581 DF_1_NODIRECT = 0x00020000, // Object has no-direct binding.
1582 DF_1_IGNMULDEF = 0x00040000,
1583 DF_1_NOKSYMS = 0x00080000,
1584 DF_1_NOHDR = 0x00100000,
1585 DF_1_EDITED = 0x00200000, // Object is modified after built.
1586 DF_1_NORELOC = 0x00400000,
1587 DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers.
1588 DF_1_GLOBAUDIT = 0x01000000, // Global auditing required.
1589 DF_1_SINGLETON = 0x02000000, // Singleton symbols are used.
1590 DF_1_PIE = 0x08000000, // Object is a position-independent executable.
1591 };
1592
1593 // DT_MIPS_FLAGS values.
1594 enum {
1595 RHF_NONE = 0x00000000, // No flags.
1596 RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers.
1597 RHF_NOTPOT = 0x00000002, // Hash size is not a power of two.
1598 RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH.
1599 RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated.
1600 RHF_SGI_ONLY = 0x00000010, // SGI specific features.
1601 RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish
1602 // executing before any non-init
1603 // code in DSO is called.
1604 RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code.
1605 RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start
1606 // executing before any non-init
1607 // code in DSO is called.
1608 RHF_PIXIE = 0x00000100, // Generated by pixie.
1609 RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default.
1610 RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted
1611 RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted
1612 RHF_CORD = 0x00001000, // Generated by cord.
1613 RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved
1614 // undef symbols.
1615 RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order.
1616 };
1617
1618 // ElfXX_VerDef structure version (GNU versioning)
1619 enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 };
1620
1621 // VerDef Flags (ElfXX_VerDef::vd_flags)
1622 enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 };
1623
1624 // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1625 enum {
1626 VER_NDX_LOCAL = 0, // Unversioned local symbol
1627 VER_NDX_GLOBAL = 1, // Unversioned global symbol
1628 VERSYM_VERSION = 0x7fff, // Version Index mask
1629 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
1630 };
1631
1632 // ElfXX_VerNeed structure version (GNU versioning)
1633 enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 };
1634
1635 // SHT_NOTE section types.
1636
1637 // Generic note types.
1638 enum : unsigned {
1639 NT_VERSION = 1,
1640 NT_ARCH = 2,
1641 NT_GNU_BUILD_ATTRIBUTE_OPEN = 0x100,
1642 NT_GNU_BUILD_ATTRIBUTE_FUNC = 0x101,
1643 };
1644
1645 // Core note types.
1646 enum : unsigned {
1647 NT_PRSTATUS = 1,
1648 NT_FPREGSET = 2,
1649 NT_PRPSINFO = 3,
1650 NT_TASKSTRUCT = 4,
1651 NT_AUXV = 6,
1652 NT_PSTATUS = 10,
1653 NT_FPREGS = 12,
1654 NT_PSINFO = 13,
1655 NT_LWPSTATUS = 16,
1656 NT_LWPSINFO = 17,
1657 NT_WIN32PSTATUS = 18,
1658
1659 NT_PPC_VMX = 0x100,
1660 NT_PPC_VSX = 0x102,
1661 NT_PPC_TAR = 0x103,
1662 NT_PPC_PPR = 0x104,
1663 NT_PPC_DSCR = 0x105,
1664 NT_PPC_EBB = 0x106,
1665 NT_PPC_PMU = 0x107,
1666 NT_PPC_TM_CGPR = 0x108,
1667 NT_PPC_TM_CFPR = 0x109,
1668 NT_PPC_TM_CVMX = 0x10a,
1669 NT_PPC_TM_CVSX = 0x10b,
1670 NT_PPC_TM_SPR = 0x10c,
1671 NT_PPC_TM_CTAR = 0x10d,
1672 NT_PPC_TM_CPPR = 0x10e,
1673 NT_PPC_TM_CDSCR = 0x10f,
1674
1675 NT_386_TLS = 0x200,
1676 NT_386_IOPERM = 0x201,
1677 NT_X86_XSTATE = 0x202,
1678
1679 NT_S390_HIGH_GPRS = 0x300,
1680 NT_S390_TIMER = 0x301,
1681 NT_S390_TODCMP = 0x302,
1682 NT_S390_TODPREG = 0x303,
1683 NT_S390_CTRS = 0x304,
1684 NT_S390_PREFIX = 0x305,
1685 NT_S390_LAST_BREAK = 0x306,
1686 NT_S390_SYSTEM_CALL = 0x307,
1687 NT_S390_TDB = 0x308,
1688 NT_S390_VXRS_LOW = 0x309,
1689 NT_S390_VXRS_HIGH = 0x30a,
1690 NT_S390_GS_CB = 0x30b,
1691 NT_S390_GS_BC = 0x30c,
1692
1693 NT_ARM_VFP = 0x400,
1694 NT_ARM_TLS = 0x401,
1695 NT_ARM_HW_BREAK = 0x402,
1696 NT_ARM_HW_WATCH = 0x403,
1697 NT_ARM_SVE = 0x405,
1698 NT_ARM_PAC_MASK = 0x406,
1699 NT_ARM_TAGGED_ADDR_CTRL = 0x409,
1700 NT_ARM_SSVE = 0x40b,
1701 NT_ARM_ZA = 0x40c,
1702 NT_ARM_ZT = 0x40d,
1703
1704 NT_FILE = 0x46494c45,
1705 NT_PRXFPREG = 0x46e62b7f,
1706 NT_SIGINFO = 0x53494749,
1707 };
1708
1709 // LLVM-specific notes.
1710 enum {
1711 NT_LLVM_HWASAN_GLOBALS = 3,
1712 };
1713
1714 // GNU note types.
1715 enum {
1716 NT_GNU_ABI_TAG = 1,
1717 NT_GNU_HWCAP = 2,
1718 NT_GNU_BUILD_ID = 3,
1719 NT_GNU_GOLD_VERSION = 4,
1720 NT_GNU_PROPERTY_TYPE_0 = 5,
1721 FDO_PACKAGING_METADATA = 0xcafe1a7e,
1722 };
1723
1724 // Android note types.
1725 enum {
1726 NT_ANDROID_TYPE_IDENT = 1,
1727 NT_ANDROID_TYPE_KUSER = 3,
1728 NT_ANDROID_TYPE_MEMTAG = 4,
1729 };
1730
1731 // Memory tagging values used in NT_ANDROID_TYPE_MEMTAG notes.
1732 enum {
1733 // Enumeration to determine the tagging mode. In Android-land, 'SYNC' means
1734 // running all threads in MTE Synchronous mode, and 'ASYNC' means to use the
1735 // kernels auto-upgrade feature to allow for either MTE Asynchronous,
1736 // Asymmetric, or Synchronous mode. This allows silicon vendors to specify, on
1737 // a per-cpu basis what 'ASYNC' should mean. Generally, the expectation is
1738 // "pick the most precise mode that's very fast".
1739 NT_MEMTAG_LEVEL_NONE = 0,
1740 NT_MEMTAG_LEVEL_ASYNC = 1,
1741 NT_MEMTAG_LEVEL_SYNC = 2,
1742 NT_MEMTAG_LEVEL_MASK = 3,
1743 // Bits indicating whether the loader should prepare for MTE to be enabled on
1744 // the heap and/or stack.
1745 NT_MEMTAG_HEAP = 4,
1746 NT_MEMTAG_STACK = 8,
1747 };
1748
1749 // Property types used in GNU_PROPERTY_TYPE_0 notes.
1750 enum : unsigned {
1751 GNU_PROPERTY_STACK_SIZE = 1,
1752 GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2,
1753 GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000,
1754 GNU_PROPERTY_AARCH64_FEATURE_PAUTH = 0xc0000001,
1755 GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002,
1756
1757 GNU_PROPERTY_X86_UINT32_OR_LO = 0xc0008000,
1758 GNU_PROPERTY_X86_FEATURE_2_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 1,
1759 GNU_PROPERTY_X86_ISA_1_NEEDED = GNU_PROPERTY_X86_UINT32_OR_LO + 2,
1760
1761 GNU_PROPERTY_X86_UINT32_OR_AND_LO = 0xc0010000,
1762 GNU_PROPERTY_X86_FEATURE_2_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 1,
1763 GNU_PROPERTY_X86_ISA_1_USED = GNU_PROPERTY_X86_UINT32_OR_AND_LO + 2,
1764 };
1765
1766 // aarch64 processor feature bits.
1767 enum : unsigned {
1768 GNU_PROPERTY_AARCH64_FEATURE_1_BTI = 1 << 0,
1769 GNU_PROPERTY_AARCH64_FEATURE_1_PAC = 1 << 1,
1770 GNU_PROPERTY_AARCH64_FEATURE_1_GCS = 1 << 2,
1771 };
1772
1773 // aarch64 PAuth platforms.
1774 enum : unsigned {
1775 AARCH64_PAUTH_PLATFORM_INVALID = 0x0,
1776 AARCH64_PAUTH_PLATFORM_BAREMETAL = 0x1,
1777 AARCH64_PAUTH_PLATFORM_LLVM_LINUX = 0x10000002,
1778 };
1779
1780 // Bit positions of version flags for AARCH64_PAUTH_PLATFORM_LLVM_LINUX.
1781 enum : unsigned {
1782 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INTRINSICS = 0,
1783 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_CALLS = 1,
1784 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_RETURNS = 2,
1785 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_AUTHTRAPS = 3,
1786 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_VPTRADDRDISCR = 4,
1787 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_VPTRTYPEDISCR = 5,
1788 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINI = 6,
1789 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_LAST =
1790 AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINI,
1791 };
1792
1793 // x86 processor feature bits.
1794 enum : unsigned {
1795 GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0,
1796 GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1,
1797
1798 GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0,
1799 GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1,
1800 GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2,
1801 GNU_PROPERTY_X86_FEATURE_2_XMM = 1 << 3,
1802 GNU_PROPERTY_X86_FEATURE_2_YMM = 1 << 4,
1803 GNU_PROPERTY_X86_FEATURE_2_ZMM = 1 << 5,
1804 GNU_PROPERTY_X86_FEATURE_2_FXSR = 1 << 6,
1805 GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7,
1806 GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8,
1807 GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9,
1808
1809 GNU_PROPERTY_X86_ISA_1_BASELINE = 1 << 0,
1810 GNU_PROPERTY_X86_ISA_1_V2 = 1 << 1,
1811 GNU_PROPERTY_X86_ISA_1_V3 = 1 << 2,
1812 GNU_PROPERTY_X86_ISA_1_V4 = 1 << 3,
1813 };
1814
1815 // FreeBSD note types.
1816 enum {
1817 NT_FREEBSD_ABI_TAG = 1,
1818 NT_FREEBSD_NOINIT_TAG = 2,
1819 NT_FREEBSD_ARCH_TAG = 3,
1820 NT_FREEBSD_FEATURE_CTL = 4,
1821 };
1822
1823 // NT_FREEBSD_FEATURE_CTL values (see FreeBSD's sys/sys/elf_common.h).
1824 enum {
1825 NT_FREEBSD_FCTL_ASLR_DISABLE = 0x00000001,
1826 NT_FREEBSD_FCTL_PROTMAX_DISABLE = 0x00000002,
1827 NT_FREEBSD_FCTL_STKGAP_DISABLE = 0x00000004,
1828 NT_FREEBSD_FCTL_WXNEEDED = 0x00000008,
1829 NT_FREEBSD_FCTL_LA48 = 0x00000010,
1830 NT_FREEBSD_FCTL_ASG_DISABLE = 0x00000020,
1831 };
1832
1833 // FreeBSD core note types.
1834 enum {
1835 NT_FREEBSD_THRMISC = 7,
1836 NT_FREEBSD_PROCSTAT_PROC = 8,
1837 NT_FREEBSD_PROCSTAT_FILES = 9,
1838 NT_FREEBSD_PROCSTAT_VMMAP = 10,
1839 NT_FREEBSD_PROCSTAT_GROUPS = 11,
1840 NT_FREEBSD_PROCSTAT_UMASK = 12,
1841 NT_FREEBSD_PROCSTAT_RLIMIT = 13,
1842 NT_FREEBSD_PROCSTAT_OSREL = 14,
1843 NT_FREEBSD_PROCSTAT_PSSTRINGS = 15,
1844 NT_FREEBSD_PROCSTAT_AUXV = 16,
1845 };
1846
1847 // NetBSD core note types.
1848 enum {
1849 NT_NETBSDCORE_PROCINFO = 1,
1850 NT_NETBSDCORE_AUXV = 2,
1851 NT_NETBSDCORE_LWPSTATUS = 24,
1852 };
1853
1854 // OpenBSD core note types.
1855 enum {
1856 NT_OPENBSD_PROCINFO = 10,
1857 NT_OPENBSD_AUXV = 11,
1858 NT_OPENBSD_REGS = 20,
1859 NT_OPENBSD_FPREGS = 21,
1860 NT_OPENBSD_XFPREGS = 22,
1861 NT_OPENBSD_WCOOKIE = 23,
1862 };
1863
1864 // AMDGPU-specific section indices.
1865 enum {
1866 SHN_AMDGPU_LDS = 0xff00, // Variable in LDS; symbol encoded like SHN_COMMON
1867 };
1868
1869 // AMD vendor specific notes. (Code Object V2)
1870 enum {
1871 NT_AMD_HSA_CODE_OBJECT_VERSION = 1,
1872 NT_AMD_HSA_HSAIL = 2,
1873 NT_AMD_HSA_ISA_VERSION = 3,
1874 // Note types with values between 4 and 9 (inclusive) are reserved.
1875 NT_AMD_HSA_METADATA = 10,
1876 NT_AMD_HSA_ISA_NAME = 11,
1877 NT_AMD_PAL_METADATA = 12
1878 };
1879
1880 // AMDGPU vendor specific notes. (Code Object V3)
1881 enum {
1882 // Note types with values between 0 and 31 (inclusive) are reserved.
1883 NT_AMDGPU_METADATA = 32
1884 };
1885
1886 // LLVMOMPOFFLOAD specific notes.
1887 enum : unsigned {
1888 NT_LLVM_OPENMP_OFFLOAD_VERSION = 1,
1889 NT_LLVM_OPENMP_OFFLOAD_PRODUCER = 2,
1890 NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION = 3
1891 };
1892
1893 enum {
1894 GNU_ABI_TAG_LINUX = 0,
1895 GNU_ABI_TAG_HURD = 1,
1896 GNU_ABI_TAG_SOLARIS = 2,
1897 GNU_ABI_TAG_FREEBSD = 3,
1898 GNU_ABI_TAG_NETBSD = 4,
1899 GNU_ABI_TAG_SYLLABLE = 5,
1900 GNU_ABI_TAG_NACL = 6,
1901 };
1902
1903 constexpr const char *ELF_NOTE_GNU = "GNU";
1904
1905 // Android packed relocation group flags.
1906 enum {
1907 RELOCATION_GROUPED_BY_INFO_FLAG = 1,
1908 RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2,
1909 RELOCATION_GROUPED_BY_ADDEND_FLAG = 4,
1910 RELOCATION_GROUP_HAS_ADDEND_FLAG = 8,
1911 };
1912
1913 // Compressed section header for ELF32.
1914 struct Elf32_Chdr {
1915 Elf32_Word ch_type;
1916 Elf32_Word ch_size;
1917 Elf32_Word ch_addralign;
1918 };
1919
1920 // Compressed section header for ELF64.
1921 struct Elf64_Chdr {
1922 Elf64_Word ch_type;
1923 Elf64_Word ch_reserved;
1924 Elf64_Xword ch_size;
1925 Elf64_Xword ch_addralign;
1926 };
1927
1928 // Note header for ELF32.
1929 struct Elf32_Nhdr {
1930 Elf32_Word n_namesz;
1931 Elf32_Word n_descsz;
1932 Elf32_Word n_type;
1933 };
1934
1935 // Note header for ELF64.
1936 struct Elf64_Nhdr {
1937 Elf64_Word n_namesz;
1938 Elf64_Word n_descsz;
1939 Elf64_Word n_type;
1940 };
1941
1942 // Legal values for ch_type field of compressed section header.
1943 enum {
1944 ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm.
1945 ELFCOMPRESS_ZSTD = 2, // Zstandard algorithm
1946 ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific.
1947 ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific.
1948 ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific.
1949 ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific.
1950 };
1951
1952 constexpr unsigned CREL_HDR_ADDEND = 4;
1953
1954 /// Convert an architecture name into ELF's e_machine value.
1955 uint16_t convertArchNameToEMachine(StringRef Arch);
1956
1957 /// Convert an ELF's e_machine value into an architecture name.
1958 StringRef convertEMachineToArchName(uint16_t EMachine);
1959
1960 // Convert a lowercase string identifier into an OSABI value.
1961 uint8_t convertNameToOSABI(StringRef Name);
1962
1963 // Convert an OSABI value into a string that identifies the OS- or ABI-
1964 // specific ELF extension.
1965 StringRef convertOSABIToName(uint8_t OSABI);
1966
1967 } // end namespace ELF
1968 } // end namespace llvm
1969
1970 #endif // LLVM_BINARYFORMAT_ELF_H
1971