1 //===- ELFTypes.h - Endian specific types for ELF ---------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_OBJECT_ELFTYPES_H
11 #define LLVM_OBJECT_ELFTYPES_H
13 #include "llvm/Support/DataTypes.h"
14 #include "llvm/Support/ELF.h"
15 #include "llvm/Support/Endian.h"
20 using support::endianness;
22 template <endianness target_endianness, bool is64Bits> struct ELFType {
23 static const endianness TargetEndianness = target_endianness;
24 static const bool Is64Bits = is64Bits;
27 // Use an alignment of 2 for the typedefs since that is the worst case for
28 // ELF files in archives.
30 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
31 template <endianness target_endianness> struct ELFDataTypeTypedefHelperCommon {
32 typedef support::detail::packed_endian_specific_integral<
33 uint16_t, target_endianness, 2> Elf_Half;
34 typedef support::detail::packed_endian_specific_integral<
35 uint32_t, target_endianness, 2> Elf_Word;
36 typedef support::detail::packed_endian_specific_integral<
37 int32_t, target_endianness, 2> Elf_Sword;
38 typedef support::detail::packed_endian_specific_integral<
39 uint64_t, target_endianness, 2> Elf_Xword;
40 typedef support::detail::packed_endian_specific_integral<
41 int64_t, target_endianness, 2> Elf_Sxword;
44 template <class ELFT> struct ELFDataTypeTypedefHelper;
47 template <endianness TargetEndianness>
48 struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, false>>
49 : ELFDataTypeTypedefHelperCommon<TargetEndianness> {
50 typedef uint32_t value_type;
51 typedef support::detail::packed_endian_specific_integral<
52 value_type, TargetEndianness, 2> Elf_Addr;
53 typedef support::detail::packed_endian_specific_integral<
54 value_type, TargetEndianness, 2> Elf_Off;
58 template <endianness TargetEndianness>
59 struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, true>>
60 : ELFDataTypeTypedefHelperCommon<TargetEndianness> {
61 typedef uint64_t value_type;
62 typedef support::detail::packed_endian_specific_integral<
63 value_type, TargetEndianness, 2> Elf_Addr;
64 typedef support::detail::packed_endian_specific_integral<
65 value_type, TargetEndianness, 2> Elf_Off;
68 // I really don't like doing this, but the alternative is copypasta.
69 #define LLVM_ELF_IMPORT_TYPES(E, W) \
70 typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Addr Elf_Addr; \
71 typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Off Elf_Off; \
72 typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Half Elf_Half; \
73 typedef typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Word Elf_Word; \
75 typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Sword Elf_Sword; \
77 typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Xword Elf_Xword; \
79 typename ELFDataTypeTypedefHelper<ELFType<E, W>>::Elf_Sxword Elf_Sxword;
81 #define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) \
82 LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::Is64Bits)
85 template <class ELFT> struct Elf_Shdr_Base;
87 template <endianness TargetEndianness>
88 struct Elf_Shdr_Base<ELFType<TargetEndianness, false>> {
89 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
90 Elf_Word sh_name; // Section name (index into string table)
91 Elf_Word sh_type; // Section type (SHT_*)
92 Elf_Word sh_flags; // Section flags (SHF_*)
93 Elf_Addr sh_addr; // Address where section is to be loaded
94 Elf_Off sh_offset; // File offset of section data, in bytes
95 Elf_Word sh_size; // Size of section, in bytes
96 Elf_Word sh_link; // Section type-specific header table index link
97 Elf_Word sh_info; // Section type-specific extra information
98 Elf_Word sh_addralign; // Section address alignment
99 Elf_Word sh_entsize; // Size of records contained within the section
102 template <endianness TargetEndianness>
103 struct Elf_Shdr_Base<ELFType<TargetEndianness, true>> {
104 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
105 Elf_Word sh_name; // Section name (index into string table)
106 Elf_Word sh_type; // Section type (SHT_*)
107 Elf_Xword sh_flags; // Section flags (SHF_*)
108 Elf_Addr sh_addr; // Address where section is to be loaded
109 Elf_Off sh_offset; // File offset of section data, in bytes
110 Elf_Xword sh_size; // Size of section, in bytes
111 Elf_Word sh_link; // Section type-specific header table index link
112 Elf_Word sh_info; // Section type-specific extra information
113 Elf_Xword sh_addralign; // Section address alignment
114 Elf_Xword sh_entsize; // Size of records contained within the section
117 template <class ELFT>
118 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
119 using Elf_Shdr_Base<ELFT>::sh_entsize;
120 using Elf_Shdr_Base<ELFT>::sh_size;
122 /// @brief Get the number of entities this section contains if it has any.
123 unsigned getEntityCount() const {
126 return sh_size / sh_entsize;
130 template <class ELFT> struct Elf_Sym_Base;
132 template <endianness TargetEndianness>
133 struct Elf_Sym_Base<ELFType<TargetEndianness, false>> {
134 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
135 Elf_Word st_name; // Symbol name (index into string table)
136 Elf_Addr st_value; // Value or address associated with the symbol
137 Elf_Word st_size; // Size of the symbol
138 unsigned char st_info; // Symbol's type and binding attributes
139 unsigned char st_other; // Must be zero; reserved
140 Elf_Half st_shndx; // Which section (header table index) it's defined in
143 template <endianness TargetEndianness>
144 struct Elf_Sym_Base<ELFType<TargetEndianness, true>> {
145 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
146 Elf_Word st_name; // Symbol name (index into string table)
147 unsigned char st_info; // Symbol's type and binding attributes
148 unsigned char st_other; // Must be zero; reserved
149 Elf_Half st_shndx; // Which section (header table index) it's defined in
150 Elf_Addr st_value; // Value or address associated with the symbol
151 Elf_Xword st_size; // Size of the symbol
154 template <class ELFT>
155 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
156 using Elf_Sym_Base<ELFT>::st_info;
157 using Elf_Sym_Base<ELFT>::st_shndx;
158 using Elf_Sym_Base<ELFT>::st_other;
160 // These accessors and mutators correspond to the ELF32_ST_BIND,
161 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
162 unsigned char getBinding() const { return st_info >> 4; }
163 unsigned char getType() const { return st_info & 0x0f; }
164 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
165 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
166 void setBindingAndType(unsigned char b, unsigned char t) {
167 st_info = (b << 4) + (t & 0x0f);
170 /// Access to the STV_xxx flag stored in the first two bits of st_other.
175 unsigned char getVisibility() const { return st_other & 0x3; }
176 void setVisibility(unsigned char v) {
177 assert(v < 4 && "Invalid value for visibility");
178 st_other = (st_other & ~0x3) | v;
181 bool isAbsolute() const { return st_shndx == ELF::SHN_ABS; }
182 bool isCommon() const {
183 return getType() == ELF::STT_COMMON || st_shndx == ELF::SHN_COMMON;
185 bool isDefined() const {
186 return !isUndefined() &&
187 !(st_shndx >= ELF::SHN_LORESERVE && st_shndx < ELF::SHN_ABS);
189 bool isProcessorSpecific() const {
190 return st_shndx >= ELF::SHN_LOPROC && st_shndx <= ELF::SHN_HIPROC;
192 bool isOSSpecific() const {
193 return st_shndx >= ELF::SHN_LOOS && st_shndx <= ELF::SHN_HIOS;
195 bool isReserved() const {
196 return st_shndx > ELF::SHN_HIOS && st_shndx < ELF::SHN_ABS;
198 bool isUndefined() const { return st_shndx == ELF::SHN_UNDEF; }
201 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
202 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
203 template <class ELFT>
204 struct Elf_Versym_Impl {
205 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
206 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
209 template <class ELFT> struct Elf_Verdaux_Impl;
211 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
212 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
213 template <class ELFT>
214 struct Elf_Verdef_Impl {
215 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
216 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
217 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
218 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
219 Elf_Half vd_ndx; // Version index, used in .gnu.version entries
220 Elf_Half vd_cnt; // Number of Verdaux entries
221 Elf_Word vd_hash; // Hash of name
222 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
223 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
225 /// Get the first Verdaux entry for this Verdef.
226 const Elf_Verdaux *getAux() const {
227 return reinterpret_cast<const Elf_Verdaux *>((const char *)this + vd_aux);
231 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
232 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
233 template <class ELFT>
234 struct Elf_Verdaux_Impl {
235 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
236 Elf_Word vda_name; // Version name (offset in string table)
237 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
240 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
241 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
242 template <class ELFT>
243 struct Elf_Verneed_Impl {
244 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
245 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
246 Elf_Half vn_cnt; // Number of associated Vernaux entries
247 Elf_Word vn_file; // Library name (string table offset)
248 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
249 Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
252 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
253 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
254 template <class ELFT>
255 struct Elf_Vernaux_Impl {
256 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
257 Elf_Word vna_hash; // Hash of dependency name
258 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
259 Elf_Half vna_other; // Version index, used in .gnu.version entries
260 Elf_Word vna_name; // Dependency name
261 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
264 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
265 /// table section (.dynamic) look like.
266 template <class ELFT> struct Elf_Dyn_Base;
268 template <endianness TargetEndianness>
269 struct Elf_Dyn_Base<ELFType<TargetEndianness, false>> {
270 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
278 template <endianness TargetEndianness>
279 struct Elf_Dyn_Base<ELFType<TargetEndianness, true>> {
280 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
288 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
289 template <class ELFT>
290 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
291 using Elf_Dyn_Base<ELFT>::d_tag;
292 using Elf_Dyn_Base<ELFT>::d_un;
293 int64_t getTag() const { return d_tag; }
294 uint64_t getVal() const { return d_un.d_val; }
295 uint64_t getPtr() const { return d_un.ptr; }
298 // Elf_Rel: Elf Relocation
299 template <class ELFT, bool isRela> struct Elf_Rel_Base;
301 template <endianness TargetEndianness>
302 struct Elf_Rel_Base<ELFType<TargetEndianness, false>, false> {
303 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
304 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
305 Elf_Word r_info; // Symbol table index and type of relocation to apply
307 uint32_t getRInfo(bool isMips64EL) const {
311 void setRInfo(uint32_t R, bool IsMips64EL) {
317 template <endianness TargetEndianness>
318 struct Elf_Rel_Base<ELFType<TargetEndianness, true>, false> {
319 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
320 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
321 Elf_Xword r_info; // Symbol table index and type of relocation to apply
323 uint64_t getRInfo(bool isMips64EL) const {
327 // Mips64 little endian has a "special" encoding of r_info. Instead of one
328 // 64 bit little endian number, it is a little endian 32 bit number followed
329 // by a 32 bit big endian number.
330 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
331 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
333 void setRInfo(uint64_t R, bool IsMips64EL) {
335 r_info = (R >> 32) | ((R & 0xff000000) << 8) | ((R & 0x00ff0000) << 24) |
336 ((R & 0x0000ff00) << 40) | ((R & 0x000000ff) << 56);
342 template <endianness TargetEndianness>
343 struct Elf_Rel_Base<ELFType<TargetEndianness, false>, true> {
344 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
345 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
346 Elf_Word r_info; // Symbol table index and type of relocation to apply
347 Elf_Sword r_addend; // Compute value for relocatable field by adding this
349 uint32_t getRInfo(bool isMips64EL) const {
353 void setRInfo(uint32_t R, bool IsMips64EL) {
359 template <endianness TargetEndianness>
360 struct Elf_Rel_Base<ELFType<TargetEndianness, true>, true> {
361 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
362 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
363 Elf_Xword r_info; // Symbol table index and type of relocation to apply
364 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
366 uint64_t getRInfo(bool isMips64EL) const {
367 // Mips64 little endian has a "special" encoding of r_info. Instead of one
368 // 64 bit little endian number, it is a little endian 32 bit number followed
369 // by a 32 bit big endian number.
373 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) |
374 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff);
376 void setRInfo(uint64_t R, bool IsMips64EL) {
378 r_info = (R >> 32) | ((R & 0xff000000) << 8) | ((R & 0x00ff0000) << 24) |
379 ((R & 0x0000ff00) << 40) | ((R & 0x000000ff) << 56);
385 template <class ELFT, bool isRela> struct Elf_Rel_Impl;
387 template <endianness TargetEndianness, bool isRela>
388 struct Elf_Rel_Impl<ELFType<TargetEndianness, true>, isRela>
389 : Elf_Rel_Base<ELFType<TargetEndianness, true>, isRela> {
390 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
392 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
393 // and ELF64_R_INFO macros defined in the ELF specification:
394 uint32_t getSymbol(bool isMips64EL) const {
395 return (uint32_t)(this->getRInfo(isMips64EL) >> 32);
397 uint32_t getType(bool isMips64EL) const {
398 return (uint32_t)(this->getRInfo(isMips64EL) & 0xffffffffL);
400 void setSymbol(uint32_t s, bool IsMips64EL) {
401 setSymbolAndType(s, getType(), IsMips64EL);
403 void setType(uint32_t t, bool IsMips64EL) {
404 setSymbolAndType(getSymbol(), t, IsMips64EL);
406 void setSymbolAndType(uint32_t s, uint32_t t, bool IsMips64EL) {
407 this->setRInfo(((uint64_t)s << 32) + (t & 0xffffffffL), IsMips64EL);
411 template <endianness TargetEndianness, bool isRela>
412 struct Elf_Rel_Impl<ELFType<TargetEndianness, false>, isRela>
413 : Elf_Rel_Base<ELFType<TargetEndianness, false>, isRela> {
414 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
416 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
417 // and ELF32_R_INFO macros defined in the ELF specification:
418 uint32_t getSymbol(bool isMips64EL) const {
419 return this->getRInfo(isMips64EL) >> 8;
421 unsigned char getType(bool isMips64EL) const {
422 return (unsigned char)(this->getRInfo(isMips64EL) & 0x0ff);
424 void setSymbol(uint32_t s, bool IsMips64EL) {
425 setSymbolAndType(s, getType(), IsMips64EL);
427 void setType(unsigned char t, bool IsMips64EL) {
428 setSymbolAndType(getSymbol(), t, IsMips64EL);
430 void setSymbolAndType(uint32_t s, unsigned char t, bool IsMips64EL) {
431 this->setRInfo((s << 8) + t, IsMips64EL);
435 template <class ELFT>
436 struct Elf_Ehdr_Impl {
437 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
438 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
439 Elf_Half e_type; // Type of file (see ET_*)
440 Elf_Half e_machine; // Required architecture for this file (see EM_*)
441 Elf_Word e_version; // Must be equal to 1
442 Elf_Addr e_entry; // Address to jump to in order to start program
443 Elf_Off e_phoff; // Program header table's file offset, in bytes
444 Elf_Off e_shoff; // Section header table's file offset, in bytes
445 Elf_Word e_flags; // Processor-specific flags
446 Elf_Half e_ehsize; // Size of ELF header, in bytes
447 Elf_Half e_phentsize; // Size of an entry in the program header table
448 Elf_Half e_phnum; // Number of entries in the program header table
449 Elf_Half e_shentsize; // Size of an entry in the section header table
450 Elf_Half e_shnum; // Number of entries in the section header table
451 Elf_Half e_shstrndx; // Section header table index of section name
453 bool checkMagic() const {
454 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
456 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
457 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
460 template <class ELFT> struct Elf_Phdr_Impl;
462 template <endianness TargetEndianness>
463 struct Elf_Phdr_Impl<ELFType<TargetEndianness, false>> {
464 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
465 Elf_Word p_type; // Type of segment
466 Elf_Off p_offset; // FileOffset where segment is located, in bytes
467 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
468 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
469 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
470 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
471 Elf_Word p_flags; // Segment flags
472 Elf_Word p_align; // Segment alignment constraint
475 template <endianness TargetEndianness>
476 struct Elf_Phdr_Impl<ELFType<TargetEndianness, true>> {
477 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
478 Elf_Word p_type; // Type of segment
479 Elf_Word p_flags; // Segment flags
480 Elf_Off p_offset; // FileOffset where segment is located, in bytes
481 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
482 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
483 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
484 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
485 Elf_Xword p_align; // Segment alignment constraint
488 // MIPS .reginfo section
489 template <class ELFT>
490 struct Elf_Mips_RegInfo;
492 template <llvm::support::endianness TargetEndianness>
493 struct Elf_Mips_RegInfo<ELFType<TargetEndianness, false>> {
494 LLVM_ELF_IMPORT_TYPES(TargetEndianness, false)
495 Elf_Word ri_gprmask; // bit-mask of used general registers
496 Elf_Word ri_cprmask[4]; // bit-mask of used co-processor registers
497 Elf_Addr ri_gp_value; // gp register value
500 template <llvm::support::endianness TargetEndianness>
501 struct Elf_Mips_RegInfo<ELFType<TargetEndianness, true>> {
502 LLVM_ELF_IMPORT_TYPES(TargetEndianness, true)
503 Elf_Word ri_gprmask; // bit-mask of used general registers
504 Elf_Word ri_pad; // unused padding field
505 Elf_Word ri_cprmask[4]; // bit-mask of used co-processor registers
506 Elf_Addr ri_gp_value; // gp register value
509 // .MIPS.options section
510 template <class ELFT> struct Elf_Mips_Options {
511 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
512 uint8_t kind; // Determines interpretation of variable part of descriptor
513 uint8_t size; // Byte size of descriptor, including this header
514 Elf_Half section; // Section header index of section affected,
515 // or 0 for global options
516 Elf_Word info; // Kind-specific information
518 const Elf_Mips_RegInfo<ELFT> &getRegInfo() const {
519 assert(kind == llvm::ELF::ODK_REGINFO);
520 return *reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(
521 (const uint8_t *)this + sizeof(Elf_Mips_Options));
525 // .MIPS.abiflags section content
526 template <class ELFT> struct Elf_Mips_ABIFlags {
527 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
528 Elf_Half version; // Version of the structure
529 uint8_t isa_level; // ISA level: 1-5, 32, and 64
530 uint8_t isa_rev; // ISA revision (0 for MIPS I - MIPS V)
531 uint8_t gpr_size; // General purpose registers size
532 uint8_t cpr1_size; // Co-processor 1 registers size
533 uint8_t cpr2_size; // Co-processor 2 registers size
534 uint8_t fp_abi; // Floating-point ABI flag
535 Elf_Word isa_ext; // Processor-specific extension
536 Elf_Word ases; // ASEs flags
537 Elf_Word flags1; // General flags
538 Elf_Word flags2; // General flags
541 } // end namespace object.
542 } // end namespace llvm.