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1 : //===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===//
2 : //
3 : // The LLVM Compiler Infrastructure
4 : //
5 : // This file is distributed under the University of Illinois Open Source
6 : // License. See LICENSE.TXT for details.
7 : //
8 : //===----------------------------------------------------------------------===//
9 : //
10 : // This header contains common, non-processor-specific data structures and
11 : // constants for the ELF file format.
12 : //
13 : // The details of the ELF32 bits in this file are largely based on the Tool
14 : // Interface Standard (TIS) Executable and Linking Format (ELF) Specification
15 : // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format
16 : // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files.
17 : //
18 : //===----------------------------------------------------------------------===//
19 :
20 : #ifndef LLVM_SUPPORT_ELF_H
21 : #define LLVM_SUPPORT_ELF_H
22 :
23 : #include "llvm/Support/Compiler.h"
24 : #include "llvm/Support/DataTypes.h"
25 : #include <cstring>
26 :
27 : namespace llvm {
28 :
29 : namespace ELF {
30 :
31 : typedef uint32_t Elf32_Addr; // Program address
32 : typedef uint32_t Elf32_Off; // File offset
33 : typedef uint16_t Elf32_Half;
34 : typedef uint32_t Elf32_Word;
35 : typedef int32_t Elf32_Sword;
36 :
37 : typedef uint64_t Elf64_Addr;
38 : typedef uint64_t Elf64_Off;
39 : typedef uint16_t Elf64_Half;
40 : typedef uint32_t Elf64_Word;
41 : typedef int32_t Elf64_Sword;
42 : typedef uint64_t Elf64_Xword;
43 : typedef int64_t Elf64_Sxword;
44 :
45 : // Object file magic string.
46 : static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'};
47 :
48 : // e_ident size and indices.
49 : enum {
50 : EI_MAG0 = 0, // File identification index.
51 : EI_MAG1 = 1, // File identification index.
52 : EI_MAG2 = 2, // File identification index.
53 : EI_MAG3 = 3, // File identification index.
54 : EI_CLASS = 4, // File class.
55 : EI_DATA = 5, // Data encoding.
56 : EI_VERSION = 6, // File version.
57 : EI_OSABI = 7, // OS/ABI identification.
58 : EI_ABIVERSION = 8, // ABI version.
59 : EI_PAD = 9, // Start of padding bytes.
60 : EI_NIDENT = 16 // Number of bytes in e_ident.
61 : };
62 :
63 : struct Elf32_Ehdr {
64 : unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes
65 : Elf32_Half e_type; // Type of file (see ET_* below)
66 : Elf32_Half e_machine; // Required architecture for this file (see EM_*)
67 : Elf32_Word e_version; // Must be equal to 1
68 : Elf32_Addr e_entry; // Address to jump to in order to start program
69 : Elf32_Off e_phoff; // Program header table's file offset, in bytes
70 : Elf32_Off e_shoff; // Section header table's file offset, in bytes
71 : Elf32_Word e_flags; // Processor-specific flags
72 : Elf32_Half e_ehsize; // Size of ELF header, in bytes
73 : Elf32_Half e_phentsize; // Size of an entry in the program header table
74 : Elf32_Half e_phnum; // Number of entries in the program header table
75 : Elf32_Half e_shentsize; // Size of an entry in the section header table
76 : Elf32_Half e_shnum; // Number of entries in the section header table
77 : Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table
78 : bool checkMagic() const {
79 : return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
80 : }
81 : unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
82 : unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
83 : };
84 :
85 : // 64-bit ELF header. Fields are the same as for ELF32, but with different
86 : // types (see above).
87 : struct Elf64_Ehdr {
88 : unsigned char e_ident[EI_NIDENT];
89 : Elf64_Half e_type;
90 : Elf64_Half e_machine;
91 : Elf64_Word e_version;
92 : Elf64_Addr e_entry;
93 : Elf64_Off e_phoff;
94 : Elf64_Off e_shoff;
95 : Elf64_Word e_flags;
96 : Elf64_Half e_ehsize;
97 : Elf64_Half e_phentsize;
98 : Elf64_Half e_phnum;
99 : Elf64_Half e_shentsize;
100 : Elf64_Half e_shnum;
101 : Elf64_Half e_shstrndx;
102 : bool checkMagic() const {
103 : return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0;
104 : }
105 : unsigned char getFileClass() const { return e_ident[EI_CLASS]; }
106 : unsigned char getDataEncoding() const { return e_ident[EI_DATA]; }
107 : };
108 :
109 : // File types
110 : enum {
111 : ET_NONE = 0, // No file type
112 : ET_REL = 1, // Relocatable file
113 : ET_EXEC = 2, // Executable file
114 : ET_DYN = 3, // Shared object file
115 : ET_CORE = 4, // Core file
116 : ET_LOPROC = 0xff00, // Beginning of processor-specific codes
117 : ET_HIPROC = 0xffff // Processor-specific
118 : };
119 :
120 : // Versioning
121 : enum { EV_NONE = 0, EV_CURRENT = 1 };
122 :
123 : // Machine architectures
124 : // See current registered ELF machine architectures at:
125 : // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html
126 : enum {
127 : EM_NONE = 0, // No machine
128 : EM_M32 = 1, // AT&T WE 32100
129 : EM_SPARC = 2, // SPARC
130 : EM_386 = 3, // Intel 386
131 : EM_68K = 4, // Motorola 68000
132 : EM_88K = 5, // Motorola 88000
133 : EM_IAMCU = 6, // Intel MCU
134 : EM_860 = 7, // Intel 80860
135 : EM_MIPS = 8, // MIPS R3000
136 : EM_S370 = 9, // IBM System/370
137 : EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian
138 : EM_PARISC = 15, // Hewlett-Packard PA-RISC
139 : EM_VPP500 = 17, // Fujitsu VPP500
140 : EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC
141 : EM_960 = 19, // Intel 80960
142 : EM_PPC = 20, // PowerPC
143 : EM_PPC64 = 21, // PowerPC64
144 : EM_S390 = 22, // IBM System/390
145 : EM_SPU = 23, // IBM SPU/SPC
146 : EM_V800 = 36, // NEC V800
147 : EM_FR20 = 37, // Fujitsu FR20
148 : EM_RH32 = 38, // TRW RH-32
149 : EM_RCE = 39, // Motorola RCE
150 : EM_ARM = 40, // ARM
151 : EM_ALPHA = 41, // DEC Alpha
152 : EM_SH = 42, // Hitachi SH
153 : EM_SPARCV9 = 43, // SPARC V9
154 : EM_TRICORE = 44, // Siemens TriCore
155 : EM_ARC = 45, // Argonaut RISC Core
156 : EM_H8_300 = 46, // Hitachi H8/300
157 : EM_H8_300H = 47, // Hitachi H8/300H
158 : EM_H8S = 48, // Hitachi H8S
159 : EM_H8_500 = 49, // Hitachi H8/500
160 : EM_IA_64 = 50, // Intel IA-64 processor architecture
161 : EM_MIPS_X = 51, // Stanford MIPS-X
162 : EM_COLDFIRE = 52, // Motorola ColdFire
163 : EM_68HC12 = 53, // Motorola M68HC12
164 : EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator
165 : EM_PCP = 55, // Siemens PCP
166 : EM_NCPU = 56, // Sony nCPU embedded RISC processor
167 : EM_NDR1 = 57, // Denso NDR1 microprocessor
168 : EM_STARCORE = 58, // Motorola Star*Core processor
169 : EM_ME16 = 59, // Toyota ME16 processor
170 : EM_ST100 = 60, // STMicroelectronics ST100 processor
171 : EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family
172 : EM_X86_64 = 62, // AMD x86-64 architecture
173 : EM_PDSP = 63, // Sony DSP Processor
174 : EM_PDP10 = 64, // Digital Equipment Corp. PDP-10
175 : EM_PDP11 = 65, // Digital Equipment Corp. PDP-11
176 : EM_FX66 = 66, // Siemens FX66 microcontroller
177 : EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller
178 : EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller
179 : EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller
180 : EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller
181 : EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller
182 : EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller
183 : EM_SVX = 73, // Silicon Graphics SVx
184 : EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller
185 : EM_VAX = 75, // Digital VAX
186 : EM_CRIS = 76, // Axis Communications 32-bit embedded processor
187 : EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor
188 : EM_FIREPATH = 78, // Element 14 64-bit DSP Processor
189 : EM_ZSP = 79, // LSI Logic 16-bit DSP Processor
190 : EM_MMIX = 80, // Donald Knuth's educational 64-bit processor
191 : EM_HUANY = 81, // Harvard University machine-independent object files
192 : EM_PRISM = 82, // SiTera Prism
193 : EM_AVR = 83, // Atmel AVR 8-bit microcontroller
194 : EM_FR30 = 84, // Fujitsu FR30
195 : EM_D10V = 85, // Mitsubishi D10V
196 : EM_D30V = 86, // Mitsubishi D30V
197 : EM_V850 = 87, // NEC v850
198 : EM_M32R = 88, // Mitsubishi M32R
199 : EM_MN10300 = 89, // Matsushita MN10300
200 : EM_MN10200 = 90, // Matsushita MN10200
201 : EM_PJ = 91, // picoJava
202 : EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor
203 : EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old
204 : // spelling/synonym: EM_ARC_A5)
205 : EM_XTENSA = 94, // Tensilica Xtensa Architecture
206 : EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor
207 : EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor
208 : EM_NS32K = 97, // National Semiconductor 32000 series
209 : EM_TPC = 98, // Tenor Network TPC processor
210 : EM_SNP1K = 99, // Trebia SNP 1000 processor
211 : EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200
212 : EM_IP2K = 101, // Ubicom IP2xxx microcontroller family
213 : EM_MAX = 102, // MAX Processor
214 : EM_CR = 103, // National Semiconductor CompactRISC microprocessor
215 : EM_F2MC16 = 104, // Fujitsu F2MC16
216 : EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430
217 : EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor
218 : EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors
219 : EM_SEP = 108, // Sharp embedded microprocessor
220 : EM_ARCA = 109, // Arca RISC Microprocessor
221 : EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC
222 : // of Peking University
223 : EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU
224 : EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor
225 : EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor
226 : EM_CRX = 114, // National Semiconductor CompactRISC CRX
227 : EM_XGATE = 115, // Motorola XGATE embedded processor
228 : EM_C166 = 116, // Infineon C16x/XC16x processor
229 : EM_M16C = 117, // Renesas M16C series microprocessors
230 : EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal
231 : // Controller
232 : EM_CE = 119, // Freescale Communication Engine RISC core
233 : EM_M32C = 120, // Renesas M32C series microprocessors
234 : EM_TSK3000 = 131, // Altium TSK3000 core
235 : EM_RS08 = 132, // Freescale RS08 embedded processor
236 : EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP
237 : // processors
238 : EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor
239 : EM_SCORE7 = 135, // Sunplus S+core7 RISC processor
240 : EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor
241 : EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor
242 : EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture
243 : EM_SE_C17 = 139, // Seiko Epson C17 family
244 : EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family
245 : EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family
246 : EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family
247 : EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor
248 : EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor
249 : EM_R32C = 162, // Renesas R32C series microprocessors
250 : EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family
251 : EM_HEXAGON = 164, // Qualcomm Hexagon processor
252 : EM_8051 = 165, // Intel 8051 and variants
253 : EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable
254 : // and extensible RISC processors
255 : EM_NDS32 = 167, // Andes Technology compact code size embedded RISC
256 : // processor family
257 : EM_ECOG1 = 168, // Cyan Technology eCOG1X family
258 : EM_ECOG1X = 168, // Cyan Technology eCOG1X family
259 : EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers
260 : EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor
261 : EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor
262 : EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture
263 : EM_RX = 173, // Renesas RX family
264 : EM_METAG = 174, // Imagination Technologies META processor
265 : // architecture
266 : EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture
267 : EM_ECOG16 = 176, // Cyan Technology eCOG16 family
268 : EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit
269 : // microprocessor
270 : EM_ETPU = 178, // Freescale Extended Time Processing Unit
271 : EM_SLE9X = 179, // Infineon Technologies SLE9X core
272 : EM_L10M = 180, // Intel L10M
273 : EM_K10M = 181, // Intel K10M
274 : EM_AARCH64 = 183, // ARM AArch64
275 : EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family
276 : EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller
277 : EM_TILE64 = 187, // Tilera TILE64 multicore architecture family
278 : EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family
279 : EM_CUDA = 190, // NVIDIA CUDA architecture
280 : EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family
281 : EM_CLOUDSHIELD = 192, // CloudShield architecture family
282 : EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family
283 : EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family
284 : EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2
285 : EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core
286 : EM_RL78 = 197, // Renesas RL78 family
287 : EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor
288 : EM_78KOR = 199, // Renesas 78KOR family
289 : EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC)
290 : EM_BA1 = 201, // Beyond BA1 CPU architecture
291 : EM_BA2 = 202, // Beyond BA2 CPU architecture
292 : EM_XCORE = 203, // XMOS xCORE processor family
293 : EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family
294 : EM_INTEL205 = 205, // Reserved by Intel
295 : EM_INTEL206 = 206, // Reserved by Intel
296 : EM_INTEL207 = 207, // Reserved by Intel
297 : EM_INTEL208 = 208, // Reserved by Intel
298 : EM_INTEL209 = 209, // Reserved by Intel
299 : EM_KM32 = 210, // KM211 KM32 32-bit processor
300 : EM_KMX32 = 211, // KM211 KMX32 32-bit processor
301 : EM_KMX16 = 212, // KM211 KMX16 16-bit processor
302 : EM_KMX8 = 213, // KM211 KMX8 8-bit processor
303 : EM_KVARC = 214, // KM211 KVARC processor
304 : EM_CDP = 215, // Paneve CDP architecture family
305 : EM_COGE = 216, // Cognitive Smart Memory Processor
306 : EM_COOL = 217, // iCelero CoolEngine
307 : EM_NORC = 218, // Nanoradio Optimized RISC
308 : EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family
309 : EM_AMDGPU = 224, // AMD GPU architecture
310 : EM_RISCV = 243, // RISC-V
311 : EM_LANAI = 244, // Lanai 32-bit processor
312 : EM_BPF = 247, // Linux kernel bpf virtual machine
313 :
314 : // A request has been made to the maintainer of the official registry for
315 : // such numbers for an official value for WebAssembly. As soon as one is
316 : // allocated, this enum will be updated to use it.
317 : EM_WEBASSEMBLY = 0x4157, // WebAssembly architecture
318 : };
319 :
320 : // Object file classes.
321 : enum {
322 : ELFCLASSNONE = 0,
323 : ELFCLASS32 = 1, // 32-bit object file
324 : ELFCLASS64 = 2 // 64-bit object file
325 : };
326 :
327 : // Object file byte orderings.
328 : enum {
329 : ELFDATANONE = 0, // Invalid data encoding.
330 : ELFDATA2LSB = 1, // Little-endian object file
331 : ELFDATA2MSB = 2 // Big-endian object file
332 : };
333 :
334 : // OS ABI identification.
335 : enum {
336 : ELFOSABI_NONE = 0, // UNIX System V ABI
337 : ELFOSABI_HPUX = 1, // HP-UX operating system
338 : ELFOSABI_NETBSD = 2, // NetBSD
339 : ELFOSABI_GNU = 3, // GNU/Linux
340 : ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU.
341 : ELFOSABI_HURD = 4, // GNU/Hurd
342 : ELFOSABI_SOLARIS = 6, // Solaris
343 : ELFOSABI_AIX = 7, // AIX
344 : ELFOSABI_IRIX = 8, // IRIX
345 : ELFOSABI_FREEBSD = 9, // FreeBSD
346 : ELFOSABI_TRU64 = 10, // TRU64 UNIX
347 : ELFOSABI_MODESTO = 11, // Novell Modesto
348 : ELFOSABI_OPENBSD = 12, // OpenBSD
349 : ELFOSABI_OPENVMS = 13, // OpenVMS
350 : ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel
351 : ELFOSABI_AROS = 15, // AROS
352 : ELFOSABI_FENIXOS = 16, // FenixOS
353 : ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI
354 : ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
355 : ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime
356 : ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000
357 : ELFOSABI_ARM = 97, // ARM
358 : ELFOSABI_STANDALONE = 255 // Standalone (embedded) application
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 9 : unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT;
394 9 : return ((1 << Val) >> 2) << 2;
395 : }
396 : static inline unsigned encodePPC64LocalEntryOffset(int64_t Offset) {
397 : unsigned Val =
398 9 : (Offset >= 4 * 4 ? (Offset >= 8 * 4 ? (Offset >= 16 * 4 ? 6 : 5) : 4)
399 9 : : (Offset >= 2 * 4 ? 3 : (Offset >= 1 * 4 ? 2 : 0)));
400 9 : 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,
416 : EF_ARM_VFP_FLOAT = 0x00000400U,
417 : EF_ARM_EABI_UNKNOWN = 0x00000000U,
418 : EF_ARM_EABI_VER1 = 0x01000000U,
419 : EF_ARM_EABI_VER2 = 0x02000000U,
420 : EF_ARM_EABI_VER3 = 0x03000000U,
421 : EF_ARM_EABI_VER4 = 0x04000000U,
422 : EF_ARM_EABI_VER5 = 0x05000000U,
423 : EF_ARM_EABIMASK = 0xFF000000U
424 : };
425 :
426 : // ELF Relocation types for ARM
427 : enum {
428 : #include "ELFRelocs/ARM.def"
429 : };
430 :
431 : // AVR specific e_flags
432 : enum : unsigned {
433 : EF_AVR_ARCH_AVR1 = 1,
434 : EF_AVR_ARCH_AVR2 = 2,
435 : EF_AVR_ARCH_AVR25 = 25,
436 : EF_AVR_ARCH_AVR3 = 3,
437 : EF_AVR_ARCH_AVR31 = 31,
438 : EF_AVR_ARCH_AVR35 = 35,
439 : EF_AVR_ARCH_AVR4 = 4,
440 : EF_AVR_ARCH_AVR5 = 5,
441 : EF_AVR_ARCH_AVR51 = 51,
442 : EF_AVR_ARCH_AVR6 = 6,
443 : EF_AVR_ARCH_AVRTINY = 100,
444 : EF_AVR_ARCH_XMEGA1 = 101,
445 : EF_AVR_ARCH_XMEGA2 = 102,
446 : EF_AVR_ARCH_XMEGA3 = 103,
447 : EF_AVR_ARCH_XMEGA4 = 104,
448 : EF_AVR_ARCH_XMEGA5 = 105,
449 : EF_AVR_ARCH_XMEGA6 = 106,
450 : EF_AVR_ARCH_XMEGA7 = 107
451 : };
452 :
453 : // ELF Relocation types for AVR
454 : enum {
455 : #include "ELFRelocs/AVR.def"
456 : };
457 :
458 : // Mips Specific e_flags
459 : enum : unsigned {
460 : EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
461 : EF_MIPS_PIC = 0x00000002, // Position independent code
462 : EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
463 : EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI
464 : EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine
465 : // in 32-bit mode
466 : EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine
467 : // but uses 64-bit FP registers
468 : EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding
469 :
470 : // ABI flags
471 : EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI
472 : EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture.
473 : EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode.
474 : EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode.
475 : EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant.
476 :
477 : // MIPS machine variant
478 : EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation.
479 : EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900
480 : EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010
481 : EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100
482 : EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650
483 : EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120
484 : EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181
485 : EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1
486 : EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon
487 : EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr
488 : EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2
489 : EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3
490 : EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400
491 : EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900
492 : EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500
493 : EF_MIPS_MACH_9000 = 0x00990000, // Unknown
494 : EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E
495 : EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F
496 : EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A
497 : EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask
498 :
499 : // ARCH_ASE
500 : EF_MIPS_MICROMIPS = 0x02000000, // microMIPS
501 : EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions
502 : EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions
503 : EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags
504 :
505 : // ARCH
506 : EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
507 : EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
508 : EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
509 : EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
510 : EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
511 : EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h
512 : EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h
513 : EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5
514 : EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5
515 : EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6
516 : EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6
517 : EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
518 : };
519 :
520 : // ELF Relocation types for Mips
521 : enum {
522 : #include "ELFRelocs/Mips.def"
523 : };
524 :
525 : // Special values for the st_other field in the symbol table entry for MIPS.
526 : enum {
527 : STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional
528 : STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record
529 : STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC
530 : STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips
531 : STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16
532 : };
533 :
534 : // .MIPS.options section descriptor kinds
535 : enum {
536 : ODK_NULL = 0, // Undefined
537 : ODK_REGINFO = 1, // Register usage information
538 : ODK_EXCEPTIONS = 2, // Exception processing options
539 : ODK_PAD = 3, // Section padding options
540 : ODK_HWPATCH = 4, // Hardware patches applied
541 : ODK_FILL = 5, // Linker fill value
542 : ODK_TAGS = 6, // Space for tool identification
543 : ODK_HWAND = 7, // Hardware AND patches applied
544 : ODK_HWOR = 8, // Hardware OR patches applied
545 : ODK_GP_GROUP = 9, // GP group to use for text/data sections
546 : ODK_IDENT = 10, // ID information
547 : ODK_PAGESIZE = 11 // Page size information
548 : };
549 :
550 : // Hexagon-specific e_flags
551 : enum {
552 : // Object processor version flags, bits[11:0]
553 : EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2
554 : EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3
555 : EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4
556 : EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5
557 : EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55
558 : EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60
559 : EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62
560 :
561 : // Highest ISA version flags
562 : EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0]
563 : // of e_flags
564 : EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA
565 : EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA
566 : EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA
567 : EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA
568 : EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA
569 : EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA
570 : EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA
571 : };
572 :
573 : // Hexagon-specific section indexes for common small data
574 : enum {
575 : SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes
576 : SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access
577 : SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access
578 : SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access
579 : SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access
580 : };
581 :
582 : // ELF Relocation types for Hexagon
583 : enum {
584 : #include "ELFRelocs/Hexagon.def"
585 : };
586 :
587 : // ELF Relocation type for Lanai.
588 : enum {
589 : #include "ELFRelocs/Lanai.def"
590 : };
591 :
592 : // ELF Relocation types for RISC-V
593 : enum {
594 : #include "ELFRelocs/RISCV.def"
595 : };
596 :
597 : // ELF Relocation types for S390/zSeries
598 : enum {
599 : #include "ELFRelocs/SystemZ.def"
600 : };
601 :
602 : // ELF Relocation type for Sparc.
603 : enum {
604 : #include "ELFRelocs/Sparc.def"
605 : };
606 :
607 : // ELF Relocation types for WebAssembly
608 : enum {
609 : #include "ELFRelocs/WebAssembly.def"
610 : };
611 :
612 : // ELF Relocation types for AMDGPU
613 : enum {
614 : #include "ELFRelocs/AMDGPU.def"
615 : };
616 :
617 : // ELF Relocation types for BPF
618 : enum {
619 : #include "ELFRelocs/BPF.def"
620 : };
621 :
622 : #undef ELF_RELOC
623 :
624 : // Section header.
625 : struct Elf32_Shdr {
626 : Elf32_Word sh_name; // Section name (index into string table)
627 : Elf32_Word sh_type; // Section type (SHT_*)
628 : Elf32_Word sh_flags; // Section flags (SHF_*)
629 : Elf32_Addr sh_addr; // Address where section is to be loaded
630 : Elf32_Off sh_offset; // File offset of section data, in bytes
631 : Elf32_Word sh_size; // Size of section, in bytes
632 : Elf32_Word sh_link; // Section type-specific header table index link
633 : Elf32_Word sh_info; // Section type-specific extra information
634 : Elf32_Word sh_addralign; // Section address alignment
635 : Elf32_Word sh_entsize; // Size of records contained within the section
636 : };
637 :
638 : // Section header for ELF64 - same fields as ELF32, different types.
639 : struct Elf64_Shdr {
640 : Elf64_Word sh_name;
641 : Elf64_Word sh_type;
642 : Elf64_Xword sh_flags;
643 : Elf64_Addr sh_addr;
644 : Elf64_Off sh_offset;
645 : Elf64_Xword sh_size;
646 : Elf64_Word sh_link;
647 : Elf64_Word sh_info;
648 : Elf64_Xword sh_addralign;
649 : Elf64_Xword sh_entsize;
650 : };
651 :
652 : // Special section indices.
653 : enum {
654 : SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless
655 : SHN_LORESERVE = 0xff00, // Lowest reserved index
656 : SHN_LOPROC = 0xff00, // Lowest processor-specific index
657 : SHN_HIPROC = 0xff1f, // Highest processor-specific index
658 : SHN_LOOS = 0xff20, // Lowest operating system-specific index
659 : SHN_HIOS = 0xff3f, // Highest operating system-specific index
660 : SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation
661 : SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables
662 : SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE
663 : SHN_HIRESERVE = 0xffff // Highest reserved index
664 : };
665 :
666 : // Section types.
667 : enum : unsigned {
668 : SHT_NULL = 0, // No associated section (inactive entry).
669 : SHT_PROGBITS = 1, // Program-defined contents.
670 : SHT_SYMTAB = 2, // Symbol table.
671 : SHT_STRTAB = 3, // String table.
672 : SHT_RELA = 4, // Relocation entries; explicit addends.
673 : SHT_HASH = 5, // Symbol hash table.
674 : SHT_DYNAMIC = 6, // Information for dynamic linking.
675 : SHT_NOTE = 7, // Information about the file.
676 : SHT_NOBITS = 8, // Data occupies no space in the file.
677 : SHT_REL = 9, // Relocation entries; no explicit addends.
678 : SHT_SHLIB = 10, // Reserved.
679 : SHT_DYNSYM = 11, // Symbol table.
680 : SHT_INIT_ARRAY = 14, // Pointers to initialization functions.
681 : SHT_FINI_ARRAY = 15, // Pointers to termination functions.
682 : SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions.
683 : SHT_GROUP = 17, // Section group.
684 : SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries.
685 : SHT_LOOS = 0x60000000, // Lowest operating system-specific type.
686 : SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes.
687 : SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table.
688 : SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions.
689 : SHT_GNU_verneed = 0x6ffffffe, // GNU version references.
690 : SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table.
691 : SHT_HIOS = 0x6fffffff, // Highest operating system-specific type.
692 : SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type.
693 : // Fixme: All this is duplicated in MCSectionELF. Why??
694 : // Exception Index table
695 : SHT_ARM_EXIDX = 0x70000001U,
696 : // BPABI DLL dynamic linking pre-emption map
697 : SHT_ARM_PREEMPTMAP = 0x70000002U,
698 : // Object file compatibility attributes
699 : SHT_ARM_ATTRIBUTES = 0x70000003U,
700 : SHT_ARM_DEBUGOVERLAY = 0x70000004U,
701 : SHT_ARM_OVERLAYSECTION = 0x70000005U,
702 : SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in
703 : // this section based on their sizes
704 : SHT_X86_64_UNWIND = 0x70000001, // Unwind information
705 :
706 : SHT_MIPS_REGINFO = 0x70000006, // Register usage information
707 : SHT_MIPS_OPTIONS = 0x7000000d, // General options
708 : SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section.
709 : SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information.
710 :
711 : SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type.
712 : SHT_LOUSER = 0x80000000, // Lowest type reserved for applications.
713 : SHT_HIUSER = 0xffffffff // Highest type reserved for applications.
714 : };
715 :
716 : // Section flags.
717 : enum : unsigned {
718 : // Section data should be writable during execution.
719 : SHF_WRITE = 0x1,
720 :
721 : // Section occupies memory during program execution.
722 : SHF_ALLOC = 0x2,
723 :
724 : // Section contains executable machine instructions.
725 : SHF_EXECINSTR = 0x4,
726 :
727 : // The data in this section may be merged.
728 : SHF_MERGE = 0x10,
729 :
730 : // The data in this section is null-terminated strings.
731 : SHF_STRINGS = 0x20,
732 :
733 : // A field in this section holds a section header table index.
734 : SHF_INFO_LINK = 0x40U,
735 :
736 : // Adds special ordering requirements for link editors.
737 : SHF_LINK_ORDER = 0x80U,
738 :
739 : // This section requires special OS-specific processing to avoid incorrect
740 : // behavior.
741 : SHF_OS_NONCONFORMING = 0x100U,
742 :
743 : // This section is a member of a section group.
744 : SHF_GROUP = 0x200U,
745 :
746 : // This section holds Thread-Local Storage.
747 : SHF_TLS = 0x400U,
748 :
749 : // Identifies a section containing compressed data.
750 : SHF_COMPRESSED = 0x800U,
751 :
752 : // This section is excluded from the final executable or shared library.
753 : SHF_EXCLUDE = 0x80000000U,
754 :
755 : // Start of target-specific flags.
756 :
757 : SHF_MASKOS = 0x0ff00000,
758 :
759 : // Bits indicating processor-specific flags.
760 : SHF_MASKPROC = 0xf0000000,
761 :
762 : /// All sections with the "d" flag are grouped together by the linker to form
763 : /// the data section and the dp register is set to the start of the section by
764 : /// the boot code.
765 : XCORE_SHF_DP_SECTION = 0x10000000,
766 :
767 : /// All sections with the "c" flag are grouped together by the linker to form
768 : /// the constant pool and the cp register is set to the start of the constant
769 : /// pool by the boot code.
770 : XCORE_SHF_CP_SECTION = 0x20000000,
771 :
772 : // If an object file section does not have this flag set, then it may not hold
773 : // more than 2GB and can be freely referred to in objects using smaller code
774 : // models. Otherwise, only objects using larger code models can refer to them.
775 : // For example, a medium code model object can refer to data in a section that
776 : // sets this flag besides being able to refer to data in a section that does
777 : // not set it; likewise, a small code model object can refer only to code in a
778 : // section that does not set this flag.
779 : SHF_X86_64_LARGE = 0x10000000,
780 :
781 : // All sections with the GPREL flag are grouped into a global data area
782 : // for faster accesses
783 : SHF_HEX_GPREL = 0x10000000,
784 :
785 : // Section contains text/data which may be replicated in other sections.
786 : // Linker must retain only one copy.
787 : SHF_MIPS_NODUPES = 0x01000000,
788 :
789 : // Linker must generate implicit hidden weak names.
790 : SHF_MIPS_NAMES = 0x02000000,
791 :
792 : // Section data local to process.
793 : SHF_MIPS_LOCAL = 0x04000000,
794 :
795 : // Do not strip this section.
796 : SHF_MIPS_NOSTRIP = 0x08000000,
797 :
798 : // Section must be part of global data area.
799 : SHF_MIPS_GPREL = 0x10000000,
800 :
801 : // This section should be merged.
802 : SHF_MIPS_MERGE = 0x20000000,
803 :
804 : // Address size to be inferred from section entry size.
805 : SHF_MIPS_ADDR = 0x40000000,
806 :
807 : // Section data is string data by default.
808 : SHF_MIPS_STRING = 0x80000000,
809 :
810 : // Make code section unreadable when in execute-only mode
811 : SHF_ARM_PURECODE = 0x20000000,
812 :
813 : SHF_AMDGPU_HSA_GLOBAL = 0x00100000,
814 : SHF_AMDGPU_HSA_READONLY = 0x00200000,
815 : SHF_AMDGPU_HSA_CODE = 0x00400000,
816 : SHF_AMDGPU_HSA_AGENT = 0x00800000
817 : };
818 :
819 : // Section Group Flags
820 : enum : unsigned {
821 : GRP_COMDAT = 0x1,
822 : GRP_MASKOS = 0x0ff00000,
823 : GRP_MASKPROC = 0xf0000000
824 : };
825 :
826 : // Symbol table entries for ELF32.
827 : struct Elf32_Sym {
828 : Elf32_Word st_name; // Symbol name (index into string table)
829 : Elf32_Addr st_value; // Value or address associated with the symbol
830 : Elf32_Word st_size; // Size of the symbol
831 : unsigned char st_info; // Symbol's type and binding attributes
832 : unsigned char st_other; // Must be zero; reserved
833 : Elf32_Half st_shndx; // Which section (header table index) it's defined in
834 :
835 : // These accessors and mutators correspond to the ELF32_ST_BIND,
836 : // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
837 : unsigned char getBinding() const { return st_info >> 4; }
838 : unsigned char getType() const { return st_info & 0x0f; }
839 : void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
840 : void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
841 : void setBindingAndType(unsigned char b, unsigned char t) {
842 : st_info = (b << 4) + (t & 0x0f);
843 : }
844 : };
845 :
846 : // Symbol table entries for ELF64.
847 : struct Elf64_Sym {
848 : Elf64_Word st_name; // Symbol name (index into string table)
849 : unsigned char st_info; // Symbol's type and binding attributes
850 : unsigned char st_other; // Must be zero; reserved
851 : Elf64_Half st_shndx; // Which section (header tbl index) it's defined in
852 : Elf64_Addr st_value; // Value or address associated with the symbol
853 : Elf64_Xword st_size; // Size of the symbol
854 :
855 : // These accessors and mutators are identical to those defined for ELF32
856 : // symbol table entries.
857 : unsigned char getBinding() const { return st_info >> 4; }
858 : unsigned char getType() const { return st_info & 0x0f; }
859 : void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
860 : void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
861 : void setBindingAndType(unsigned char b, unsigned char t) {
862 : st_info = (b << 4) + (t & 0x0f);
863 : }
864 : };
865 :
866 : // The size (in bytes) of symbol table entries.
867 : enum {
868 : SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size
869 : SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size.
870 : };
871 :
872 : // Symbol bindings.
873 : enum {
874 : STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def
875 : STB_GLOBAL = 1, // Global symbol, visible to all object files being combined
876 : STB_WEAK = 2, // Weak symbol, like global but lower-precedence
877 : STB_GNU_UNIQUE = 10,
878 : STB_LOOS = 10, // Lowest operating system-specific binding type
879 : STB_HIOS = 12, // Highest operating system-specific binding type
880 : STB_LOPROC = 13, // Lowest processor-specific binding type
881 : STB_HIPROC = 15 // Highest processor-specific binding type
882 : };
883 :
884 : // Symbol types.
885 : enum {
886 : STT_NOTYPE = 0, // Symbol's type is not specified
887 : STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.)
888 : STT_FUNC = 2, // Symbol is executable code (function, etc.)
889 : STT_SECTION = 3, // Symbol refers to a section
890 : STT_FILE = 4, // Local, absolute symbol that refers to a file
891 : STT_COMMON = 5, // An uninitialized common block
892 : STT_TLS = 6, // Thread local data object
893 : STT_GNU_IFUNC = 10, // GNU indirect function
894 : STT_LOOS = 10, // Lowest operating system-specific symbol type
895 : STT_HIOS = 12, // Highest operating system-specific symbol type
896 : STT_LOPROC = 13, // Lowest processor-specific symbol type
897 : STT_HIPROC = 15, // Highest processor-specific symbol type
898 :
899 : // AMDGPU symbol types
900 : STT_AMDGPU_HSA_KERNEL = 10,
901 : STT_AMDGPU_HSA_INDIRECT_FUNCTION = 11,
902 : STT_AMDGPU_HSA_METADATA = 12
903 : };
904 :
905 : enum {
906 : STV_DEFAULT = 0, // Visibility is specified by binding type
907 : STV_INTERNAL = 1, // Defined by processor supplements
908 : STV_HIDDEN = 2, // Not visible to other components
909 : STV_PROTECTED = 3 // Visible in other components but not preemptable
910 : };
911 :
912 : // Symbol number.
913 : enum { STN_UNDEF = 0 };
914 :
915 : // Special relocation symbols used in the MIPS64 ELF relocation entries
916 : enum {
917 : RSS_UNDEF = 0, // None
918 : RSS_GP = 1, // Value of gp
919 : RSS_GP0 = 2, // Value of gp used to create object being relocated
920 : RSS_LOC = 3 // Address of location being relocated
921 : };
922 :
923 : // Relocation entry, without explicit addend.
924 : struct Elf32_Rel {
925 : Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
926 : Elf32_Word r_info; // Symbol table index and type of relocation to apply
927 :
928 : // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
929 : // and ELF32_R_INFO macros defined in the ELF specification:
930 : Elf32_Word getSymbol() const { return (r_info >> 8); }
931 : unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
932 : void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
933 : void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
934 : void setSymbolAndType(Elf32_Word s, unsigned char t) {
935 : r_info = (s << 8) + t;
936 : }
937 : };
938 :
939 : // Relocation entry with explicit addend.
940 : struct Elf32_Rela {
941 : Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr)
942 : Elf32_Word r_info; // Symbol table index and type of relocation to apply
943 : Elf32_Sword r_addend; // Compute value for relocatable field by adding this
944 :
945 : // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
946 : // and ELF32_R_INFO macros defined in the ELF specification:
947 : Elf32_Word getSymbol() const { return (r_info >> 8); }
948 : unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); }
949 : void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); }
950 : void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
951 : void setSymbolAndType(Elf32_Word s, unsigned char t) {
952 708429 : r_info = (s << 8) + t;
953 : }
954 : };
955 :
956 : // Relocation entry, without explicit addend.
957 : struct Elf64_Rel {
958 : Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
959 : Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
960 :
961 : // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
962 : // and ELF64_R_INFO macros defined in the ELF specification:
963 : Elf64_Word getSymbol() const { return (r_info >> 32); }
964 : Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
965 : void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
966 : void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
967 : void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
968 : r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
969 : }
970 : };
971 :
972 : // Relocation entry with explicit addend.
973 : struct Elf64_Rela {
974 : Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr).
975 : Elf64_Xword r_info; // Symbol table index and type of relocation to apply.
976 : Elf64_Sxword r_addend; // Compute value for relocatable field by adding this.
977 :
978 : // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
979 : // and ELF64_R_INFO macros defined in the ELF specification:
980 : Elf64_Word getSymbol() const { return (r_info >> 32); }
981 : Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); }
982 : void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); }
983 : void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); }
984 : void setSymbolAndType(Elf64_Word s, Elf64_Word t) {
985 538919 : r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL);
986 : }
987 : };
988 :
989 : // Program header for ELF32.
990 : struct Elf32_Phdr {
991 : Elf32_Word p_type; // Type of segment
992 : Elf32_Off p_offset; // File offset where segment is located, in bytes
993 : Elf32_Addr p_vaddr; // Virtual address of beginning of segment
994 : Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
995 : Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
996 : Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
997 : Elf32_Word p_flags; // Segment flags
998 : Elf32_Word p_align; // Segment alignment constraint
999 : };
1000 :
1001 : // Program header for ELF64.
1002 : struct Elf64_Phdr {
1003 : Elf64_Word p_type; // Type of segment
1004 : Elf64_Word p_flags; // Segment flags
1005 : Elf64_Off p_offset; // File offset where segment is located, in bytes
1006 : Elf64_Addr p_vaddr; // Virtual address of beginning of segment
1007 : Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific)
1008 : Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
1009 : Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
1010 : Elf64_Xword p_align; // Segment alignment constraint
1011 : };
1012 :
1013 : // Segment types.
1014 : enum {
1015 : PT_NULL = 0, // Unused segment.
1016 : PT_LOAD = 1, // Loadable segment.
1017 : PT_DYNAMIC = 2, // Dynamic linking information.
1018 : PT_INTERP = 3, // Interpreter pathname.
1019 : PT_NOTE = 4, // Auxiliary information.
1020 : PT_SHLIB = 5, // Reserved.
1021 : PT_PHDR = 6, // The program header table itself.
1022 : PT_TLS = 7, // The thread-local storage template.
1023 : PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type.
1024 : PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type.
1025 : PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type.
1026 : PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type.
1027 :
1028 : // x86-64 program header types.
1029 : // These all contain stack unwind tables.
1030 : PT_GNU_EH_FRAME = 0x6474e550,
1031 : PT_SUNW_EH_FRAME = 0x6474e550,
1032 : PT_SUNW_UNWIND = 0x6464e550,
1033 :
1034 : PT_GNU_STACK = 0x6474e551, // Indicates stack executability.
1035 : PT_GNU_RELRO = 0x6474e552, // Read-only after relocation.
1036 :
1037 : PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data.
1038 : PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations.
1039 : PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments.
1040 :
1041 : // ARM program header types.
1042 : PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info
1043 : // These all contain stack unwind tables.
1044 : PT_ARM_EXIDX = 0x70000001,
1045 : PT_ARM_UNWIND = 0x70000001,
1046 :
1047 : // MIPS program header types.
1048 : PT_MIPS_REGINFO = 0x70000000, // Register usage information.
1049 : PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table.
1050 : PT_MIPS_OPTIONS = 0x70000002, // Options segment.
1051 : PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment.
1052 :
1053 : // AMDGPU program header types.
1054 : PT_AMDGPU_HSA_LOAD_GLOBAL_PROGRAM = 0x60000000,
1055 : PT_AMDGPU_HSA_LOAD_GLOBAL_AGENT = 0x60000001,
1056 : PT_AMDGPU_HSA_LOAD_READONLY_AGENT = 0x60000002,
1057 : PT_AMDGPU_HSA_LOAD_CODE_AGENT = 0x60000003,
1058 :
1059 : // WebAssembly program header types.
1060 : PT_WEBASSEMBLY_FUNCTIONS = PT_LOPROC + 0, // Function definitions.
1061 : };
1062 :
1063 : // Segment flag bits.
1064 : enum : unsigned {
1065 : PF_X = 1, // Execute
1066 : PF_W = 2, // Write
1067 : PF_R = 4, // Read
1068 : PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics.
1069 : PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics.
1070 : };
1071 :
1072 : // Dynamic table entry for ELF32.
1073 : struct Elf32_Dyn {
1074 : Elf32_Sword d_tag; // Type of dynamic table entry.
1075 : union {
1076 : Elf32_Word d_val; // Integer value of entry.
1077 : Elf32_Addr d_ptr; // Pointer value of entry.
1078 : } d_un;
1079 : };
1080 :
1081 : // Dynamic table entry for ELF64.
1082 : struct Elf64_Dyn {
1083 : Elf64_Sxword d_tag; // Type of dynamic table entry.
1084 : union {
1085 : Elf64_Xword d_val; // Integer value of entry.
1086 : Elf64_Addr d_ptr; // Pointer value of entry.
1087 : } d_un;
1088 : };
1089 :
1090 : // Dynamic table entry tags.
1091 : enum {
1092 : DT_NULL = 0, // Marks end of dynamic array.
1093 : DT_NEEDED = 1, // String table offset of needed library.
1094 : DT_PLTRELSZ = 2, // Size of relocation entries in PLT.
1095 : DT_PLTGOT = 3, // Address associated with linkage table.
1096 : DT_HASH = 4, // Address of symbolic hash table.
1097 : DT_STRTAB = 5, // Address of dynamic string table.
1098 : DT_SYMTAB = 6, // Address of dynamic symbol table.
1099 : DT_RELA = 7, // Address of relocation table (Rela entries).
1100 : DT_RELASZ = 8, // Size of Rela relocation table.
1101 : DT_RELAENT = 9, // Size of a Rela relocation entry.
1102 : DT_STRSZ = 10, // Total size of the string table.
1103 : DT_SYMENT = 11, // Size of a symbol table entry.
1104 : DT_INIT = 12, // Address of initialization function.
1105 : DT_FINI = 13, // Address of termination function.
1106 : DT_SONAME = 14, // String table offset of a shared objects name.
1107 : DT_RPATH = 15, // String table offset of library search path.
1108 : DT_SYMBOLIC = 16, // Changes symbol resolution algorithm.
1109 : DT_REL = 17, // Address of relocation table (Rel entries).
1110 : DT_RELSZ = 18, // Size of Rel relocation table.
1111 : DT_RELENT = 19, // Size of a Rel relocation entry.
1112 : DT_PLTREL = 20, // Type of relocation entry used for linking.
1113 : DT_DEBUG = 21, // Reserved for debugger.
1114 : DT_TEXTREL = 22, // Relocations exist for non-writable segments.
1115 : DT_JMPREL = 23, // Address of relocations associated with PLT.
1116 : DT_BIND_NOW = 24, // Process all relocations before execution.
1117 : DT_INIT_ARRAY = 25, // Pointer to array of initialization functions.
1118 : DT_FINI_ARRAY = 26, // Pointer to array of termination functions.
1119 : DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY.
1120 : DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY.
1121 : DT_RUNPATH = 29, // String table offset of lib search path.
1122 : DT_FLAGS = 30, // Flags.
1123 : DT_ENCODING = 32, // Values from here to DT_LOOS follow the rules
1124 : // for the interpretation of the d_un union.
1125 :
1126 : DT_PREINIT_ARRAY = 32, // Pointer to array of preinit functions.
1127 : DT_PREINIT_ARRAYSZ = 33, // Size of the DT_PREINIT_ARRAY array.
1128 :
1129 : DT_LOOS = 0x60000000, // Start of environment specific tags.
1130 : DT_HIOS = 0x6FFFFFFF, // End of environment specific tags.
1131 : DT_LOPROC = 0x70000000, // Start of processor specific tags.
1132 : DT_HIPROC = 0x7FFFFFFF, // End of processor specific tags.
1133 :
1134 : DT_GNU_HASH = 0x6FFFFEF5, // Reference to the GNU hash table.
1135 : DT_TLSDESC_PLT =
1136 : 0x6FFFFEF6, // Location of PLT entry for TLS descriptor resolver calls.
1137 : DT_TLSDESC_GOT = 0x6FFFFEF7, // Location of GOT entry used by TLS descriptor
1138 : // resolver PLT entry.
1139 : DT_RELACOUNT = 0x6FFFFFF9, // ELF32_Rela count.
1140 : DT_RELCOUNT = 0x6FFFFFFA, // ELF32_Rel count.
1141 :
1142 : DT_FLAGS_1 = 0X6FFFFFFB, // Flags_1.
1143 : DT_VERSYM = 0x6FFFFFF0, // The address of .gnu.version section.
1144 : DT_VERDEF = 0X6FFFFFFC, // The address of the version definition table.
1145 : DT_VERDEFNUM = 0X6FFFFFFD, // The number of entries in DT_VERDEF.
1146 : DT_VERNEED = 0X6FFFFFFE, // The address of the version Dependency table.
1147 : DT_VERNEEDNUM = 0X6FFFFFFF, // The number of entries in DT_VERNEED.
1148 :
1149 : // Hexagon specific dynamic table entries
1150 : DT_HEXAGON_SYMSZ = 0x70000000,
1151 : DT_HEXAGON_VER = 0x70000001,
1152 : DT_HEXAGON_PLT = 0x70000002,
1153 :
1154 : // Mips specific dynamic table entry tags.
1155 : DT_MIPS_RLD_VERSION = 0x70000001, // 32 bit version number for runtime
1156 : // linker interface.
1157 : DT_MIPS_TIME_STAMP = 0x70000002, // Time stamp.
1158 : DT_MIPS_ICHECKSUM = 0x70000003, // Checksum of external strings
1159 : // and common sizes.
1160 : DT_MIPS_IVERSION = 0x70000004, // Index of version string
1161 : // in string table.
1162 : DT_MIPS_FLAGS = 0x70000005, // 32 bits of flags.
1163 : DT_MIPS_BASE_ADDRESS = 0x70000006, // Base address of the segment.
1164 : DT_MIPS_MSYM = 0x70000007, // Address of .msym section.
1165 : DT_MIPS_CONFLICT = 0x70000008, // Address of .conflict section.
1166 : DT_MIPS_LIBLIST = 0x70000009, // Address of .liblist section.
1167 : DT_MIPS_LOCAL_GOTNO = 0x7000000a, // Number of local global offset
1168 : // table entries.
1169 : DT_MIPS_CONFLICTNO = 0x7000000b, // Number of entries
1170 : // in the .conflict section.
1171 : DT_MIPS_LIBLISTNO = 0x70000010, // Number of entries
1172 : // in the .liblist section.
1173 : DT_MIPS_SYMTABNO = 0x70000011, // Number of entries
1174 : // in the .dynsym section.
1175 : DT_MIPS_UNREFEXTNO = 0x70000012, // Index of first external dynamic symbol
1176 : // not referenced locally.
1177 : DT_MIPS_GOTSYM = 0x70000013, // Index of first dynamic symbol
1178 : // in global offset table.
1179 : DT_MIPS_HIPAGENO = 0x70000014, // Number of page table entries
1180 : // in global offset table.
1181 : DT_MIPS_RLD_MAP = 0x70000016, // Address of run time loader map,
1182 : // used for debugging.
1183 : DT_MIPS_DELTA_CLASS = 0x70000017, // Delta C++ class definition.
1184 : DT_MIPS_DELTA_CLASS_NO = 0x70000018, // Number of entries
1185 : // in DT_MIPS_DELTA_CLASS.
1186 : DT_MIPS_DELTA_INSTANCE = 0x70000019, // Delta C++ class instances.
1187 : DT_MIPS_DELTA_INSTANCE_NO = 0x7000001A, // Number of entries
1188 : // in DT_MIPS_DELTA_INSTANCE.
1189 : DT_MIPS_DELTA_RELOC = 0x7000001B, // Delta relocations.
1190 : DT_MIPS_DELTA_RELOC_NO = 0x7000001C, // Number of entries
1191 : // in DT_MIPS_DELTA_RELOC.
1192 : DT_MIPS_DELTA_SYM = 0x7000001D, // Delta symbols that Delta
1193 : // relocations refer to.
1194 : DT_MIPS_DELTA_SYM_NO = 0x7000001E, // Number of entries
1195 : // in DT_MIPS_DELTA_SYM.
1196 : DT_MIPS_DELTA_CLASSSYM = 0x70000020, // Delta symbols that hold
1197 : // class declarations.
1198 : DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021, // Number of entries
1199 : // in DT_MIPS_DELTA_CLASSSYM.
1200 : DT_MIPS_CXX_FLAGS = 0x70000022, // Flags indicating information
1201 : // about C++ flavor.
1202 : DT_MIPS_PIXIE_INIT = 0x70000023, // Pixie information.
1203 : DT_MIPS_SYMBOL_LIB = 0x70000024, // Address of .MIPS.symlib
1204 : DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025, // The GOT index of the first PTE
1205 : // for a segment
1206 : DT_MIPS_LOCAL_GOTIDX = 0x70000026, // The GOT index of the first PTE
1207 : // for a local symbol
1208 : DT_MIPS_HIDDEN_GOTIDX = 0x70000027, // The GOT index of the first PTE
1209 : // for a hidden symbol
1210 : DT_MIPS_PROTECTED_GOTIDX = 0x70000028, // The GOT index of the first PTE
1211 : // for a protected symbol
1212 : DT_MIPS_OPTIONS = 0x70000029, // Address of `.MIPS.options'.
1213 : DT_MIPS_INTERFACE = 0x7000002A, // Address of `.interface'.
1214 : DT_MIPS_DYNSTR_ALIGN = 0x7000002B, // Unknown.
1215 : DT_MIPS_INTERFACE_SIZE = 0x7000002C, // Size of the .interface section.
1216 : DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002D, // Size of rld_text_resolve
1217 : // function stored in the GOT.
1218 : DT_MIPS_PERF_SUFFIX = 0x7000002E, // Default suffix of DSO to be added
1219 : // by rld on dlopen() calls.
1220 : DT_MIPS_COMPACT_SIZE = 0x7000002F, // Size of compact relocation
1221 : // section (O32).
1222 : DT_MIPS_GP_VALUE = 0x70000030, // GP value for auxiliary GOTs.
1223 : DT_MIPS_AUX_DYNAMIC = 0x70000031, // Address of auxiliary .dynamic.
1224 : DT_MIPS_PLTGOT = 0x70000032, // Address of the base of the PLTGOT.
1225 : DT_MIPS_RWPLT = 0x70000034, // Points to the base
1226 : // of a writable PLT.
1227 : DT_MIPS_RLD_MAP_REL = 0x70000035, // Relative offset of run time loader
1228 : // map, used for debugging.
1229 :
1230 : // Sun machine-independent extensions.
1231 : DT_AUXILIARY = 0x7FFFFFFD, // Shared object to load before self
1232 : DT_FILTER = 0x7FFFFFFF // Shared object to get values from
1233 : };
1234 :
1235 : // DT_FLAGS values.
1236 : enum {
1237 : DF_ORIGIN = 0x01, // The object may reference $ORIGIN.
1238 : DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe.
1239 : DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment.
1240 : DF_BIND_NOW = 0x08, // Process all relocations on load.
1241 : DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically.
1242 : };
1243 :
1244 : // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry.
1245 : enum {
1246 : DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object.
1247 : DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object.
1248 : DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object.
1249 : DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object.
1250 : DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime.
1251 : DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object.
1252 : DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object.
1253 : DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled.
1254 : DF_1_DIRECT = 0x00000100, // Direct binding enabled.
1255 : DF_1_TRANS = 0x00000200,
1256 : DF_1_INTERPOSE = 0x00000400, // Object is used to interpose.
1257 : DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path.
1258 : DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed.
1259 : DF_1_CONFALT = 0x00002000, // Configuration alternative created.
1260 : DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search.
1261 : DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time.
1262 : DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time.
1263 : DF_1_NODIRECT = 0x00020000, // Object has no-direct binding.
1264 : DF_1_IGNMULDEF = 0x00040000,
1265 : DF_1_NOKSYMS = 0x00080000,
1266 : DF_1_NOHDR = 0x00100000,
1267 : DF_1_EDITED = 0x00200000, // Object is modified after built.
1268 : DF_1_NORELOC = 0x00400000,
1269 : DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers.
1270 : DF_1_GLOBAUDIT = 0x01000000, // Global auditing required.
1271 : DF_1_SINGLETON = 0x02000000 // Singleton symbols are used.
1272 : };
1273 :
1274 : // DT_MIPS_FLAGS values.
1275 : enum {
1276 : RHF_NONE = 0x00000000, // No flags.
1277 : RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers.
1278 : RHF_NOTPOT = 0x00000002, // Hash size is not a power of two.
1279 : RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH.
1280 : RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated.
1281 : RHF_SGI_ONLY = 0x00000010, // SGI specific features.
1282 : RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish
1283 : // executing before any non-init
1284 : // code in DSO is called.
1285 : RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code.
1286 : RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start
1287 : // executing before any non-init
1288 : // code in DSO is called.
1289 : RHF_PIXIE = 0x00000100, // Generated by pixie.
1290 : RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default.
1291 : RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted
1292 : RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted
1293 : RHF_CORD = 0x00001000, // Generated by cord.
1294 : RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved
1295 : // undef symbols.
1296 : RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order.
1297 : };
1298 :
1299 : // ElfXX_VerDef structure version (GNU versioning)
1300 : enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 };
1301 :
1302 : // VerDef Flags (ElfXX_VerDef::vd_flags)
1303 : enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 };
1304 :
1305 : // Special constants for the version table. (SHT_GNU_versym/.gnu.version)
1306 : enum {
1307 : VER_NDX_LOCAL = 0, // Unversioned local symbol
1308 : VER_NDX_GLOBAL = 1, // Unversioned global symbol
1309 : VERSYM_VERSION = 0x7fff, // Version Index mask
1310 : VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version)
1311 : };
1312 :
1313 : // ElfXX_VerNeed structure version (GNU versioning)
1314 : enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 };
1315 :
1316 : // SHT_NOTE section types
1317 : enum {
1318 : NT_FREEBSD_THRMISC = 7,
1319 : NT_FREEBSD_PROCSTAT_PROC = 8,
1320 : NT_FREEBSD_PROCSTAT_FILES = 9,
1321 : NT_FREEBSD_PROCSTAT_VMMAP = 10,
1322 : NT_FREEBSD_PROCSTAT_GROUPS = 11,
1323 : NT_FREEBSD_PROCSTAT_UMASK = 12,
1324 : NT_FREEBSD_PROCSTAT_RLIMIT = 13,
1325 : NT_FREEBSD_PROCSTAT_OSREL = 14,
1326 : NT_FREEBSD_PROCSTAT_PSSTRINGS = 15,
1327 : NT_FREEBSD_PROCSTAT_AUXV = 16,
1328 : };
1329 :
1330 : enum {
1331 : NT_GNU_ABI_TAG = 1,
1332 : NT_GNU_HWCAP = 2,
1333 : NT_GNU_BUILD_ID = 3,
1334 : NT_GNU_GOLD_VERSION = 4,
1335 : };
1336 :
1337 : enum {
1338 : GNU_ABI_TAG_LINUX = 0,
1339 : GNU_ABI_TAG_HURD = 1,
1340 : GNU_ABI_TAG_SOLARIS = 2,
1341 : GNU_ABI_TAG_FREEBSD = 3,
1342 : GNU_ABI_TAG_NETBSD = 4,
1343 : GNU_ABI_TAG_SYLLABLE = 5,
1344 : GNU_ABI_TAG_NACL = 6,
1345 : };
1346 :
1347 : // Compressed section header for ELF32.
1348 : struct Elf32_Chdr {
1349 : Elf32_Word ch_type;
1350 : Elf32_Word ch_size;
1351 : Elf32_Word ch_addralign;
1352 : };
1353 :
1354 : // Compressed section header for ELF64.
1355 : struct Elf64_Chdr {
1356 : Elf64_Word ch_type;
1357 : Elf64_Word ch_reserved;
1358 : Elf64_Xword ch_size;
1359 : Elf64_Xword ch_addralign;
1360 : };
1361 :
1362 : // Legal values for ch_type field of compressed section header.
1363 : enum {
1364 : ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm.
1365 : ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific.
1366 : ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific.
1367 : ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific.
1368 : ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific.
1369 : };
1370 :
1371 : } // end namespace ELF
1372 :
1373 : } // end namespace llvm
1374 :
1375 : #endif
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