1 //===- ELF.h - ELF object file implementation -------------------*- 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 file declares the ELFObjectFile template class.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef LLVM_OBJECT_ELF_H
15 #define LLVM_OBJECT_ELF_H
16
17 #include "llvm/ADT/DenseMap.h"
18 #include "llvm/ADT/PointerIntPair.h"
19 #include "llvm/ADT/SmallVector.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/ADT/Triple.h"
22 #include "llvm/Object/ObjectFile.h"
23 #include "llvm/Support/Casting.h"
24 #include "llvm/Support/ELF.h"
25 #include "llvm/Support/Endian.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/MemoryBuffer.h"
28 #include "llvm/Support/raw_ostream.h"
29 #include <algorithm>
30 #include <limits>
31 #include <utility>
32
33 #include <ctype.h>
34
35 namespace llvm {
36 namespace object {
37
38 using support::endianness;
39
40 template<endianness target_endianness, std::size_t max_alignment, bool is64Bits>
41 struct ELFType {
42 static const endianness TargetEndianness = target_endianness;
43 static const std::size_t MaxAlignment = max_alignment;
44 static const bool Is64Bits = is64Bits;
45 };
46
47 template<typename T, int max_align>
48 struct MaximumAlignment {
49 enum {value = AlignOf<T>::Alignment > max_align ? max_align
50 : AlignOf<T>::Alignment};
51 };
52
53 // Subclasses of ELFObjectFile may need this for template instantiation
54 inline std::pair<unsigned char, unsigned char>
getElfArchType(MemoryBuffer * Object)55 getElfArchType(MemoryBuffer *Object) {
56 if (Object->getBufferSize() < ELF::EI_NIDENT)
57 return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE);
58 return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS]
59 , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]);
60 }
61
62 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits.
63 template<endianness target_endianness, std::size_t max_alignment>
64 struct ELFDataTypeTypedefHelperCommon {
65 typedef support::detail::packed_endian_specific_integral
66 <uint16_t, target_endianness,
67 MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half;
68 typedef support::detail::packed_endian_specific_integral
69 <uint32_t, target_endianness,
70 MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word;
71 typedef support::detail::packed_endian_specific_integral
72 <int32_t, target_endianness,
73 MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword;
74 typedef support::detail::packed_endian_specific_integral
75 <uint64_t, target_endianness,
76 MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword;
77 typedef support::detail::packed_endian_specific_integral
78 <int64_t, target_endianness,
79 MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword;
80 };
81
82 template<class ELFT>
83 struct ELFDataTypeTypedefHelper;
84
85 /// ELF 32bit types.
86 template<template<endianness, std::size_t, bool> class ELFT,
87 endianness TargetEndianness, std::size_t MaxAlign>
88 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, false> >
89 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
90 typedef uint32_t value_type;
91 typedef support::detail::packed_endian_specific_integral
92 <value_type, TargetEndianness,
93 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
94 typedef support::detail::packed_endian_specific_integral
95 <value_type, TargetEndianness,
96 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
97 };
98
99 /// ELF 64bit types.
100 template<template<endianness, std::size_t, bool> class ELFT,
101 endianness TargetEndianness, std::size_t MaxAlign>
102 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, true> >
103 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> {
104 typedef uint64_t value_type;
105 typedef support::detail::packed_endian_specific_integral
106 <value_type, TargetEndianness,
107 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr;
108 typedef support::detail::packed_endian_specific_integral
109 <value_type, TargetEndianness,
110 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off;
111 };
112
113 // I really don't like doing this, but the alternative is copypasta.
114 #define LLVM_ELF_IMPORT_TYPES(ELFT) \
115 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Addr Elf_Addr; \
116 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Off Elf_Off; \
117 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Half Elf_Half; \
118 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Word Elf_Word; \
119 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sword Elf_Sword; \
120 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Xword Elf_Xword; \
121 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sxword Elf_Sxword;
122
123 // This is required to get template types into a macro :(
124 #define LLVM_ELF_COMMA ,
125
126 // Section header.
127 template<class ELFT>
128 struct Elf_Shdr_Base;
129
130 template<template<endianness, std::size_t, bool> class ELFT,
131 endianness TargetEndianness, std::size_t MaxAlign>
132 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, false> > {
133 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
134 MaxAlign LLVM_ELF_COMMA false>)
135 Elf_Word sh_name; // Section name (index into string table)
136 Elf_Word sh_type; // Section type (SHT_*)
137 Elf_Word sh_flags; // Section flags (SHF_*)
138 Elf_Addr sh_addr; // Address where section is to be loaded
139 Elf_Off sh_offset; // File offset of section data, in bytes
140 Elf_Word sh_size; // Size of section, in bytes
141 Elf_Word sh_link; // Section type-specific header table index link
142 Elf_Word sh_info; // Section type-specific extra information
143 Elf_Word sh_addralign;// Section address alignment
144 Elf_Word sh_entsize; // Size of records contained within the section
145 };
146
147 template<template<endianness, std::size_t, bool> class ELFT,
148 endianness TargetEndianness, std::size_t MaxAlign>
149 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, true> > {
150 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
151 MaxAlign LLVM_ELF_COMMA true>)
152 Elf_Word sh_name; // Section name (index into string table)
153 Elf_Word sh_type; // Section type (SHT_*)
154 Elf_Xword sh_flags; // Section flags (SHF_*)
155 Elf_Addr sh_addr; // Address where section is to be loaded
156 Elf_Off sh_offset; // File offset of section data, in bytes
157 Elf_Xword sh_size; // Size of section, in bytes
158 Elf_Word sh_link; // Section type-specific header table index link
159 Elf_Word sh_info; // Section type-specific extra information
160 Elf_Xword sh_addralign;// Section address alignment
161 Elf_Xword sh_entsize; // Size of records contained within the section
162 };
163
164 template<class ELFT>
165 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> {
166 using Elf_Shdr_Base<ELFT>::sh_entsize;
167 using Elf_Shdr_Base<ELFT>::sh_size;
168
169 /// @brief Get the number of entities this section contains if it has any.
170 unsigned getEntityCount() const {
171 if (sh_entsize == 0)
172 return 0;
173 return sh_size / sh_entsize;
174 }
175 };
176
177 template<class ELFT>
178 struct Elf_Sym_Base;
179
180 template<template<endianness, std::size_t, bool> class ELFT,
181 endianness TargetEndianness, std::size_t MaxAlign>
182 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, false> > {
183 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
184 MaxAlign LLVM_ELF_COMMA false>)
185 Elf_Word st_name; // Symbol name (index into string table)
186 Elf_Addr st_value; // Value or address associated with the symbol
187 Elf_Word st_size; // Size of the symbol
188 unsigned char st_info; // Symbol's type and binding attributes
189 unsigned char st_other; // Must be zero; reserved
190 Elf_Half st_shndx; // Which section (header table index) it's defined in
191 };
192
193 template<template<endianness, std::size_t, bool> class ELFT,
194 endianness TargetEndianness, std::size_t MaxAlign>
195 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, true> > {
196 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
197 MaxAlign LLVM_ELF_COMMA true>)
198 Elf_Word st_name; // Symbol name (index into string table)
199 unsigned char st_info; // Symbol's type and binding attributes
200 unsigned char st_other; // Must be zero; reserved
201 Elf_Half st_shndx; // Which section (header table index) it's defined in
202 Elf_Addr st_value; // Value or address associated with the symbol
203 Elf_Xword st_size; // Size of the symbol
204 };
205
206 template<class ELFT>
207 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> {
208 using Elf_Sym_Base<ELFT>::st_info;
209
210 // These accessors and mutators correspond to the ELF32_ST_BIND,
211 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification:
212 unsigned char getBinding() const { return st_info >> 4; }
213 unsigned char getType() const { return st_info & 0x0f; }
214 void setBinding(unsigned char b) { setBindingAndType(b, getType()); }
215 void setType(unsigned char t) { setBindingAndType(getBinding(), t); }
216 void setBindingAndType(unsigned char b, unsigned char t) {
217 st_info = (b << 4) + (t & 0x0f);
218 }
219 };
220
221 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section
222 /// (.gnu.version). This structure is identical for ELF32 and ELF64.
223 template<class ELFT>
224 struct Elf_Versym_Impl {
225 LLVM_ELF_IMPORT_TYPES(ELFT)
226 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN)
227 };
228
229 template<class ELFT>
230 struct Elf_Verdaux_Impl;
231
232 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section
233 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64.
234 template<class ELFT>
235 struct Elf_Verdef_Impl {
236 LLVM_ELF_IMPORT_TYPES(ELFT)
237 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
238 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT)
239 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*)
240 Elf_Half vd_ndx; // Version index, used in .gnu.version entries
241 Elf_Half vd_cnt; // Number of Verdaux entries
242 Elf_Word vd_hash; // Hash of name
243 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes)
244 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes)
245
246 /// Get the first Verdaux entry for this Verdef.
247 const Elf_Verdaux *getAux() const {
248 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux);
249 }
250 };
251
252 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef
253 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64.
254 template<class ELFT>
255 struct Elf_Verdaux_Impl {
256 LLVM_ELF_IMPORT_TYPES(ELFT)
257 Elf_Word vda_name; // Version name (offset in string table)
258 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes)
259 };
260
261 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed
262 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
263 template<class ELFT>
264 struct Elf_Verneed_Impl {
265 LLVM_ELF_IMPORT_TYPES(ELFT)
266 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT)
267 Elf_Half vn_cnt; // Number of associated Vernaux entries
268 Elf_Word vn_file; // Library name (string table offset)
269 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes)
270 Elf_Word vn_next; // Offset to next Verneed entry (in bytes)
271 };
272
273 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed
274 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64.
275 template<class ELFT>
276 struct Elf_Vernaux_Impl {
277 LLVM_ELF_IMPORT_TYPES(ELFT)
278 Elf_Word vna_hash; // Hash of dependency name
279 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*)
280 Elf_Half vna_other; // Version index, used in .gnu.version entries
281 Elf_Word vna_name; // Dependency name
282 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes)
283 };
284
285 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic
286 /// table section (.dynamic) look like.
287 template<class ELFT>
288 struct Elf_Dyn_Base;
289
290 template<template<endianness, std::size_t, bool> class ELFT,
291 endianness TargetEndianness, std::size_t MaxAlign>
292 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, false> > {
293 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
294 MaxAlign LLVM_ELF_COMMA false>)
295 Elf_Sword d_tag;
296 union {
297 Elf_Word d_val;
298 Elf_Addr d_ptr;
299 } d_un;
300 };
301
302 template<template<endianness, std::size_t, bool> class ELFT,
303 endianness TargetEndianness, std::size_t MaxAlign>
304 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, true> > {
305 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
306 MaxAlign LLVM_ELF_COMMA true>)
307 Elf_Sxword d_tag;
308 union {
309 Elf_Xword d_val;
310 Elf_Addr d_ptr;
311 } d_un;
312 };
313
314 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters.
315 template<class ELFT>
316 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> {
317 using Elf_Dyn_Base<ELFT>::d_tag;
318 using Elf_Dyn_Base<ELFT>::d_un;
319 int64_t getTag() const { return d_tag; }
320 uint64_t getVal() const { return d_un.d_val; }
321 uint64_t getPtr() const { return d_un.ptr; }
322 };
323
324 // Elf_Rel: Elf Relocation
325 template<class ELFT, bool isRela>
326 struct Elf_Rel_Base;
327
328 template<template<endianness, std::size_t, bool> class ELFT,
329 endianness TargetEndianness, std::size_t MaxAlign>
330 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, false> {
331 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
332 MaxAlign LLVM_ELF_COMMA false>)
333 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
334 Elf_Word r_info; // Symbol table index and type of relocation to apply
335 };
336
337 template<template<endianness, std::size_t, bool> class ELFT,
338 endianness TargetEndianness, std::size_t MaxAlign>
339 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, false> {
340 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
341 MaxAlign LLVM_ELF_COMMA true>)
342 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
343 Elf_Xword r_info; // Symbol table index and type of relocation to apply
344 };
345
346 template<template<endianness, std::size_t, bool> class ELFT,
347 endianness TargetEndianness, std::size_t MaxAlign>
348 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, true> {
349 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
350 MaxAlign LLVM_ELF_COMMA false>)
351 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
352 Elf_Word r_info; // Symbol table index and type of relocation to apply
353 Elf_Sword r_addend; // Compute value for relocatable field by adding this
354 };
355
356 template<template<endianness, std::size_t, bool> class ELFT,
357 endianness TargetEndianness, std::size_t MaxAlign>
358 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, true> {
359 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
360 MaxAlign LLVM_ELF_COMMA true>)
361 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr)
362 Elf_Xword r_info; // Symbol table index and type of relocation to apply
363 Elf_Sxword r_addend; // Compute value for relocatable field by adding this.
364 };
365
366 template<class ELFT, bool isRela>
367 struct Elf_Rel_Impl;
368
369 template<template<endianness, std::size_t, bool> class ELFT,
370 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
371 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, true>, isRela>
372 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela> {
373 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela>::r_info;
374 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
375 MaxAlign LLVM_ELF_COMMA true>)
376
377 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE,
378 // and ELF64_R_INFO macros defined in the ELF specification:
379 uint32_t getSymbol() const { return (uint32_t) (r_info >> 32); }
380 uint32_t getType() const {
381 return (uint32_t) (r_info & 0xffffffffL);
382 }
383 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
384 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); }
385 void setSymbolAndType(uint32_t s, uint32_t t) {
386 r_info = ((uint64_t)s << 32) + (t&0xffffffffL);
387 }
388 };
389
390 template<template<endianness, std::size_t, bool> class ELFT,
391 endianness TargetEndianness, std::size_t MaxAlign, bool isRela>
392 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, false>, isRela>
393 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela> {
394 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela>::r_info;
395 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
396 MaxAlign LLVM_ELF_COMMA false>)
397
398 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE,
399 // and ELF32_R_INFO macros defined in the ELF specification:
400 uint32_t getSymbol() const { return (r_info >> 8); }
401 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); }
402 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); }
403 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); }
404 void setSymbolAndType(uint32_t s, unsigned char t) {
405 r_info = (s << 8) + t;
406 }
407 };
408
409 template<class ELFT>
410 struct Elf_Ehdr_Impl {
411 LLVM_ELF_IMPORT_TYPES(ELFT)
412 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes
413 Elf_Half e_type; // Type of file (see ET_*)
414 Elf_Half e_machine; // Required architecture for this file (see EM_*)
415 Elf_Word e_version; // Must be equal to 1
416 Elf_Addr e_entry; // Address to jump to in order to start program
417 Elf_Off e_phoff; // Program header table's file offset, in bytes
418 Elf_Off e_shoff; // Section header table's file offset, in bytes
419 Elf_Word e_flags; // Processor-specific flags
420 Elf_Half e_ehsize; // Size of ELF header, in bytes
421 Elf_Half e_phentsize;// Size of an entry in the program header table
422 Elf_Half e_phnum; // Number of entries in the program header table
423 Elf_Half e_shentsize;// Size of an entry in the section header table
424 Elf_Half e_shnum; // Number of entries in the section header table
425 Elf_Half e_shstrndx; // Section header table index of section name
426 // string table
427 bool checkMagic() const {
428 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0;
429 }
430 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; }
431 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; }
432 };
433
434 template<class ELFT>
435 struct Elf_Phdr_Impl;
436
437 template<template<endianness, std::size_t, bool> class ELFT,
438 endianness TargetEndianness, std::size_t MaxAlign>
439 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, false> > {
440 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
441 MaxAlign LLVM_ELF_COMMA false>)
442 Elf_Word p_type; // Type of segment
443 Elf_Off p_offset; // FileOffset where segment is located, in bytes
444 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
445 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
446 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero)
447 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero)
448 Elf_Word p_flags; // Segment flags
449 Elf_Word p_align; // Segment alignment constraint
450 };
451
452 template<template<endianness, std::size_t, bool> class ELFT,
453 endianness TargetEndianness, std::size_t MaxAlign>
454 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, true> > {
455 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA
456 MaxAlign LLVM_ELF_COMMA true>)
457 Elf_Word p_type; // Type of segment
458 Elf_Word p_flags; // Segment flags
459 Elf_Off p_offset; // FileOffset where segment is located, in bytes
460 Elf_Addr p_vaddr; // Virtual Address of beginning of segment
461 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific)
462 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero)
463 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero)
464 Elf_Xword p_align; // Segment alignment constraint
465 };
466
467 template<class ELFT>
468 class ELFObjectFile : public ObjectFile {
469 LLVM_ELF_IMPORT_TYPES(ELFT)
470
471 public:
472 /// \brief Iterate over constant sized entities.
473 template<class EntT>
474 class ELFEntityIterator {
475 public:
476 typedef ptrdiff_t difference_type;
477 typedef EntT value_type;
478 typedef std::random_access_iterator_tag iterator_category;
479 typedef value_type &reference;
480 typedef value_type *pointer;
481
482 /// \brief Default construct iterator.
483 ELFEntityIterator() : EntitySize(0), Current(0) {}
484 ELFEntityIterator(uint64_t EntSize, const char *Start)
485 : EntitySize(EntSize)
486 , Current(Start) {}
487
488 reference operator *() {
489 assert(Current && "Attempted to dereference an invalid iterator!");
490 return *reinterpret_cast<pointer>(Current);
491 }
492
493 pointer operator ->() {
494 assert(Current && "Attempted to dereference an invalid iterator!");
495 return reinterpret_cast<pointer>(Current);
496 }
497
498 bool operator ==(const ELFEntityIterator &Other) {
499 return Current == Other.Current;
500 }
501
502 bool operator !=(const ELFEntityIterator &Other) {
503 return !(*this == Other);
504 }
505
506 ELFEntityIterator &operator ++() {
507 assert(Current && "Attempted to increment an invalid iterator!");
508 Current += EntitySize;
509 return *this;
510 }
511
512 ELFEntityIterator operator ++(int) {
513 ELFEntityIterator Tmp = *this;
514 ++*this;
515 return Tmp;
516 }
517
518 ELFEntityIterator &operator =(const ELFEntityIterator &Other) {
519 EntitySize = Other.EntitySize;
520 Current = Other.Current;
521 return *this;
522 }
523
524 difference_type operator -(const ELFEntityIterator &Other) const {
525 assert(EntitySize == Other.EntitySize &&
526 "Subtracting iterators of different EntitiySize!");
527 return (Current - Other.Current) / EntitySize;
528 }
529
530 const char *get() const { return Current; }
531
532 private:
533 uint64_t EntitySize;
534 const char *Current;
535 };
536
537 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr;
538 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr;
539 typedef Elf_Sym_Impl<ELFT> Elf_Sym;
540 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn;
541 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr;
542 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel;
543 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela;
544 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef;
545 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux;
546 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
547 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
548 typedef Elf_Versym_Impl<ELFT> Elf_Versym;
549 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator;
550 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator;
551 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
552 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter;
553
554 protected:
555 // This flag is used for classof, to distinguish ELFObjectFile from
556 // its subclass. If more subclasses will be created, this flag will
557 // have to become an enum.
558 bool isDyldELFObject;
559
560 private:
561 typedef SmallVector<const Elf_Shdr *, 2> Sections_t;
562 typedef DenseMap<unsigned, unsigned> IndexMap_t;
563 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
564
565 const Elf_Ehdr *Header;
566 const Elf_Shdr *SectionHeaderTable;
567 const Elf_Shdr *dot_shstrtab_sec; // Section header string table.
568 const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
569 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table.
570
571 // SymbolTableSections[0] always points to the dynamic string table section
572 // header, or NULL if there is no dynamic string table.
573 Sections_t SymbolTableSections;
574 IndexMap_t SymbolTableSectionsIndexMap;
575 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
576
577 const Elf_Shdr *dot_dynamic_sec; // .dynamic
578 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version
579 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r
580 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d
581
582 // Pointer to SONAME entry in dynamic string table
583 // This is set the first time getLoadName is called.
584 mutable const char *dt_soname;
585
586 private:
587 // Records for each version index the corresponding Verdef or Vernaux entry.
588 // This is filled the first time LoadVersionMap() is called.
589 class VersionMapEntry : public PointerIntPair<const void*, 1> {
590 public:
591 // If the integer is 0, this is an Elf_Verdef*.
592 // If the integer is 1, this is an Elf_Vernaux*.
593 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { }
594 VersionMapEntry(const Elf_Verdef *verdef)
595 : PointerIntPair<const void*, 1>(verdef, 0) { }
596 VersionMapEntry(const Elf_Vernaux *vernaux)
597 : PointerIntPair<const void*, 1>(vernaux, 1) { }
598 bool isNull() const { return getPointer() == NULL; }
599 bool isVerdef() const { return !isNull() && getInt() == 0; }
600 bool isVernaux() const { return !isNull() && getInt() == 1; }
601 const Elf_Verdef *getVerdef() const {
602 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL;
603 }
604 const Elf_Vernaux *getVernaux() const {
605 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL;
606 }
607 };
608 mutable SmallVector<VersionMapEntry, 16> VersionMap;
609 void LoadVersionDefs(const Elf_Shdr *sec) const;
610 void LoadVersionNeeds(const Elf_Shdr *ec) const;
611 void LoadVersionMap() const;
612
613 /// @brief Map sections to an array of relocation sections that reference
614 /// them sorted by section index.
615 RelocMap_t SectionRelocMap;
616
617 /// @brief Get the relocation section that contains \a Rel.
618 const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
619 return getSection(Rel.w.b);
620 }
621
622 public:
623 bool isRelocationHasAddend(DataRefImpl Rel) const;
624 template<typename T>
625 const T *getEntry(uint16_t Section, uint32_t Entry) const;
626 template<typename T>
627 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
628 const Elf_Shdr *getSection(DataRefImpl index) const;
629 const Elf_Shdr *getSection(uint32_t index) const;
630 const Elf_Rel *getRel(DataRefImpl Rel) const;
631 const Elf_Rela *getRela(DataRefImpl Rela) const;
632 const char *getString(uint32_t section, uint32_t offset) const;
633 const char *getString(const Elf_Shdr *section, uint32_t offset) const;
634 error_code getSymbolVersion(const Elf_Shdr *section,
635 const Elf_Sym *Symb,
636 StringRef &Version,
637 bool &IsDefault) const;
638 void VerifyStrTab(const Elf_Shdr *sh) const;
639
640 protected:
641 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private?
642 void validateSymbol(DataRefImpl Symb) const;
643
644 public:
645 error_code getSymbolName(const Elf_Shdr *section,
646 const Elf_Sym *Symb,
647 StringRef &Res) const;
648 error_code getSectionName(const Elf_Shdr *section,
649 StringRef &Res) const;
650 const Elf_Dyn *getDyn(DataRefImpl DynData) const;
651 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
652 bool &IsDefault) const;
653 uint64_t getSymbolIndex(const Elf_Sym *sym) const;
654 protected:
655 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
656 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
657 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
658 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
659 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
660 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
661 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
662 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
663 virtual error_code getSymbolSection(DataRefImpl Symb,
664 section_iterator &Res) const;
665 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
666
667 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const;
668 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const;
669
670 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
671 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
672 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
673 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
674 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
675 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
676 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
677 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
678 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
679 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
680 bool &Res) const;
681 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
682 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
683 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
684 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
685 bool &Result) const;
686 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
687 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
688
689 virtual error_code getRelocationNext(DataRefImpl Rel,
690 RelocationRef &Res) const;
691 virtual error_code getRelocationAddress(DataRefImpl Rel,
692 uint64_t &Res) const;
693 virtual error_code getRelocationOffset(DataRefImpl Rel,
694 uint64_t &Res) const;
695 virtual error_code getRelocationSymbol(DataRefImpl Rel,
696 SymbolRef &Res) const;
697 virtual error_code getRelocationType(DataRefImpl Rel,
698 uint64_t &Res) const;
699 virtual error_code getRelocationTypeName(DataRefImpl Rel,
700 SmallVectorImpl<char> &Result) const;
701 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
702 int64_t &Res) const;
703 virtual error_code getRelocationValueString(DataRefImpl Rel,
704 SmallVectorImpl<char> &Result) const;
705
706 public:
707 ELFObjectFile(MemoryBuffer *Object, error_code &ec);
708 virtual symbol_iterator begin_symbols() const;
709 virtual symbol_iterator end_symbols() const;
710
711 virtual symbol_iterator begin_dynamic_symbols() const;
712 virtual symbol_iterator end_dynamic_symbols() const;
713
714 virtual section_iterator begin_sections() const;
715 virtual section_iterator end_sections() const;
716
717 virtual library_iterator begin_libraries_needed() const;
718 virtual library_iterator end_libraries_needed() const;
719
720 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const {
721 return SymbolTableSections[0];
722 }
723
724 const Elf_Shdr *getDynamicStringTableSectionHeader() const {
725 return dot_dynstr_sec;
726 }
727
728 Elf_Dyn_iterator begin_dynamic_table() const;
729 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of
730 /// the section size.
731 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const;
732
733 Elf_Sym_iterator begin_elf_dynamic_symbols() const {
734 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
735 if (DynSymtab)
736 return Elf_Sym_iterator(DynSymtab->sh_entsize,
737 (const char *)base() + DynSymtab->sh_offset);
738 return Elf_Sym_iterator(0, 0);
739 }
740
741 Elf_Sym_iterator end_elf_dynamic_symbols() const {
742 const Elf_Shdr *DynSymtab = SymbolTableSections[0];
743 if (DynSymtab)
744 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() +
745 DynSymtab->sh_offset + DynSymtab->sh_size);
746 return Elf_Sym_iterator(0, 0);
747 }
748
749 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const {
750 return Elf_Rela_Iter(sec->sh_entsize,
751 (const char *)(base() + sec->sh_offset));
752 }
753
754 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const {
755 return Elf_Rela_Iter(sec->sh_entsize, (const char *)
756 (base() + sec->sh_offset + sec->sh_size));
757 }
758
759 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const {
760 return Elf_Rel_Iter(sec->sh_entsize,
761 (const char *)(base() + sec->sh_offset));
762 }
763
764 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const {
765 return Elf_Rel_Iter(sec->sh_entsize, (const char *)
766 (base() + sec->sh_offset + sec->sh_size));
767 }
768
769 /// \brief Iterate over program header table.
770 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter;
771
772 Elf_Phdr_Iter begin_program_headers() const {
773 return Elf_Phdr_Iter(Header->e_phentsize,
774 (const char*)base() + Header->e_phoff);
775 }
776
777 Elf_Phdr_Iter end_program_headers() const {
778 return Elf_Phdr_Iter(Header->e_phentsize,
779 (const char*)base() +
780 Header->e_phoff +
781 (Header->e_phnum * Header->e_phentsize));
782 }
783
784 virtual uint8_t getBytesInAddress() const;
785 virtual StringRef getFileFormatName() const;
786 virtual StringRef getObjectType() const { return "ELF"; }
787 virtual unsigned getArch() const;
788 virtual StringRef getLoadName() const;
789 virtual error_code getSectionContents(const Elf_Shdr *sec,
790 StringRef &Res) const;
791
792 uint64_t getNumSections() const;
793 uint64_t getStringTableIndex() const;
794 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const;
795 const Elf_Shdr *getSection(const Elf_Sym *symb) const;
796 const Elf_Shdr *getElfSection(section_iterator &It) const;
797 const Elf_Sym *getElfSymbol(symbol_iterator &It) const;
798 const Elf_Sym *getElfSymbol(uint32_t index) const;
799
800 // Methods for type inquiry through isa, cast, and dyn_cast
801 bool isDyldType() const { return isDyldELFObject; }
802 static inline bool classof(const Binary *v) {
803 return v->getType() == getELFType(ELFT::TargetEndianness == support::little,
804 ELFT::Is64Bits);
805 }
806 };
807
808 // Iterate through the version definitions, and place each Elf_Verdef
809 // in the VersionMap according to its index.
810 template<class ELFT>
811 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const {
812 unsigned vd_size = sec->sh_size; // Size of section in bytes
813 unsigned vd_count = sec->sh_info; // Number of Verdef entries
814 const char *sec_start = (const char*)base() + sec->sh_offset;
815 const char *sec_end = sec_start + vd_size;
816 // The first Verdef entry is at the start of the section.
817 const char *p = sec_start;
818 for (unsigned i = 0; i < vd_count; i++) {
819 if (p + sizeof(Elf_Verdef) > sec_end)
820 report_fatal_error("Section ended unexpectedly while scanning "
821 "version definitions.");
822 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p);
823 if (vd->vd_version != ELF::VER_DEF_CURRENT)
824 report_fatal_error("Unexpected verdef version");
825 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION;
826 if (index >= VersionMap.size())
827 VersionMap.resize(index+1);
828 VersionMap[index] = VersionMapEntry(vd);
829 p += vd->vd_next;
830 }
831 }
832
833 // Iterate through the versions needed section, and place each Elf_Vernaux
834 // in the VersionMap according to its index.
835 template<class ELFT>
836 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const {
837 unsigned vn_size = sec->sh_size; // Size of section in bytes
838 unsigned vn_count = sec->sh_info; // Number of Verneed entries
839 const char *sec_start = (const char*)base() + sec->sh_offset;
840 const char *sec_end = sec_start + vn_size;
841 // The first Verneed entry is at the start of the section.
842 const char *p = sec_start;
843 for (unsigned i = 0; i < vn_count; i++) {
844 if (p + sizeof(Elf_Verneed) > sec_end)
845 report_fatal_error("Section ended unexpectedly while scanning "
846 "version needed records.");
847 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p);
848 if (vn->vn_version != ELF::VER_NEED_CURRENT)
849 report_fatal_error("Unexpected verneed version");
850 // Iterate through the Vernaux entries
851 const char *paux = p + vn->vn_aux;
852 for (unsigned j = 0; j < vn->vn_cnt; j++) {
853 if (paux + sizeof(Elf_Vernaux) > sec_end)
854 report_fatal_error("Section ended unexpected while scanning auxiliary "
855 "version needed records.");
856 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux);
857 size_t index = vna->vna_other & ELF::VERSYM_VERSION;
858 if (index >= VersionMap.size())
859 VersionMap.resize(index+1);
860 VersionMap[index] = VersionMapEntry(vna);
861 paux += vna->vna_next;
862 }
863 p += vn->vn_next;
864 }
865 }
866
867 template<class ELFT>
868 void ELFObjectFile<ELFT>::LoadVersionMap() const {
869 // If there is no dynamic symtab or version table, there is nothing to do.
870 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL)
871 return;
872
873 // Has the VersionMap already been loaded?
874 if (VersionMap.size() > 0)
875 return;
876
877 // The first two version indexes are reserved.
878 // Index 0 is LOCAL, index 1 is GLOBAL.
879 VersionMap.push_back(VersionMapEntry());
880 VersionMap.push_back(VersionMapEntry());
881
882 if (dot_gnu_version_d_sec)
883 LoadVersionDefs(dot_gnu_version_d_sec);
884
885 if (dot_gnu_version_r_sec)
886 LoadVersionNeeds(dot_gnu_version_r_sec);
887 }
888
889 template<class ELFT>
890 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const {
891 #ifndef NDEBUG
892 const Elf_Sym *symb = getSymbol(Symb);
893 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
894 // FIXME: We really need to do proper error handling in the case of an invalid
895 // input file. Because we don't use exceptions, I think we'll just pass
896 // an error object around.
897 if (!( symb
898 && SymbolTableSection
899 && symb >= (const Elf_Sym*)(base()
900 + SymbolTableSection->sh_offset)
901 && symb < (const Elf_Sym*)(base()
902 + SymbolTableSection->sh_offset
903 + SymbolTableSection->sh_size)))
904 // FIXME: Proper error handling.
905 report_fatal_error("Symb must point to a valid symbol!");
906 #endif
907 }
908
909 template<class ELFT>
910 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb,
911 SymbolRef &Result) const {
912 validateSymbol(Symb);
913 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b];
914
915 ++Symb.d.a;
916 // Check to see if we are at the end of this symbol table.
917 if (Symb.d.a >= SymbolTableSection->getEntityCount()) {
918 // We are at the end. If there are other symbol tables, jump to them.
919 // If the symbol table is .dynsym, we are iterating dynamic symbols,
920 // and there is only one table of these.
921 if (Symb.d.b != 0) {
922 ++Symb.d.b;
923 Symb.d.a = 1; // The 0th symbol in ELF is fake.
924 }
925 // Otherwise return the terminator.
926 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) {
927 Symb.d.a = std::numeric_limits<uint32_t>::max();
928 Symb.d.b = std::numeric_limits<uint32_t>::max();
929 }
930 }
931
932 Result = SymbolRef(Symb, this);
933 return object_error::success;
934 }
935
936 template<class ELFT>
937 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb,
938 StringRef &Result) const {
939 validateSymbol(Symb);
940 const Elf_Sym *symb = getSymbol(Symb);
941 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result);
942 }
943
944 template<class ELFT>
945 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef,
946 StringRef &Version,
947 bool &IsDefault) const {
948 DataRefImpl Symb = SymRef.getRawDataRefImpl();
949 validateSymbol(Symb);
950 const Elf_Sym *symb = getSymbol(Symb);
951 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb,
952 Version, IsDefault);
953 }
954
955 template<class ELFT>
956 ELF::Elf64_Word ELFObjectFile<ELFT>
957 ::getSymbolTableIndex(const Elf_Sym *symb) const {
958 if (symb->st_shndx == ELF::SHN_XINDEX)
959 return ExtendedSymbolTable.lookup(symb);
960 return symb->st_shndx;
961 }
962
963 template<class ELFT>
964 const typename ELFObjectFile<ELFT>::Elf_Shdr *
965 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const {
966 if (symb->st_shndx == ELF::SHN_XINDEX)
967 return getSection(ExtendedSymbolTable.lookup(symb));
968 if (symb->st_shndx >= ELF::SHN_LORESERVE)
969 return 0;
970 return getSection(symb->st_shndx);
971 }
972
973 template<class ELFT>
974 const typename ELFObjectFile<ELFT>::Elf_Shdr *
975 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const {
976 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl();
977 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p);
978 }
979
980 template<class ELFT>
981 const typename ELFObjectFile<ELFT>::Elf_Sym *
982 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const {
983 return getSymbol(It->getRawDataRefImpl());
984 }
985
986 template<class ELFT>
987 const typename ELFObjectFile<ELFT>::Elf_Sym *
988 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const {
989 DataRefImpl SymbolData;
990 SymbolData.d.a = index;
991 SymbolData.d.b = 1;
992 return getSymbol(SymbolData);
993 }
994
995 template<class ELFT>
996 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb,
997 uint64_t &Result) const {
998 validateSymbol(Symb);
999 const Elf_Sym *symb = getSymbol(Symb);
1000 const Elf_Shdr *Section;
1001 switch (getSymbolTableIndex(symb)) {
1002 case ELF::SHN_COMMON:
1003 // Unintialized symbols have no offset in the object file
1004 case ELF::SHN_UNDEF:
1005 Result = UnknownAddressOrSize;
1006 return object_error::success;
1007 case ELF::SHN_ABS:
1008 Result = symb->st_value;
1009 return object_error::success;
1010 default: Section = getSection(symb);
1011 }
1012
1013 switch (symb->getType()) {
1014 case ELF::STT_SECTION:
1015 Result = Section ? Section->sh_offset : UnknownAddressOrSize;
1016 return object_error::success;
1017 case ELF::STT_FUNC:
1018 case ELF::STT_OBJECT:
1019 case ELF::STT_NOTYPE:
1020 Result = symb->st_value +
1021 (Section ? Section->sh_offset : 0);
1022 return object_error::success;
1023 default:
1024 Result = UnknownAddressOrSize;
1025 return object_error::success;
1026 }
1027 }
1028
1029 template<class ELFT>
1030 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb,
1031 uint64_t &Result) const {
1032 validateSymbol(Symb);
1033 const Elf_Sym *symb = getSymbol(Symb);
1034 const Elf_Shdr *Section;
1035 switch (getSymbolTableIndex(symb)) {
1036 case ELF::SHN_COMMON:
1037 case ELF::SHN_UNDEF:
1038 Result = UnknownAddressOrSize;
1039 return object_error::success;
1040 case ELF::SHN_ABS:
1041 Result = symb->st_value;
1042 return object_error::success;
1043 default: Section = getSection(symb);
1044 }
1045
1046 switch (symb->getType()) {
1047 case ELF::STT_SECTION:
1048 Result = Section ? Section->sh_addr : UnknownAddressOrSize;
1049 return object_error::success;
1050 case ELF::STT_FUNC:
1051 case ELF::STT_OBJECT:
1052 case ELF::STT_NOTYPE:
1053 bool IsRelocatable;
1054 switch(Header->e_type) {
1055 case ELF::ET_EXEC:
1056 case ELF::ET_DYN:
1057 IsRelocatable = false;
1058 break;
1059 default:
1060 IsRelocatable = true;
1061 }
1062 Result = symb->st_value;
1063 if (IsRelocatable && Section != 0)
1064 Result += Section->sh_addr;
1065 return object_error::success;
1066 default:
1067 Result = UnknownAddressOrSize;
1068 return object_error::success;
1069 }
1070 }
1071
1072 template<class ELFT>
1073 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb,
1074 uint64_t &Result) const {
1075 validateSymbol(Symb);
1076 const Elf_Sym *symb = getSymbol(Symb);
1077 if (symb->st_size == 0)
1078 Result = UnknownAddressOrSize;
1079 Result = symb->st_size;
1080 return object_error::success;
1081 }
1082
1083 template<class ELFT>
1084 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb,
1085 char &Result) const {
1086 validateSymbol(Symb);
1087 const Elf_Sym *symb = getSymbol(Symb);
1088 const Elf_Shdr *Section = getSection(symb);
1089
1090 char ret = '?';
1091
1092 if (Section) {
1093 switch (Section->sh_type) {
1094 case ELF::SHT_PROGBITS:
1095 case ELF::SHT_DYNAMIC:
1096 switch (Section->sh_flags) {
1097 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR):
1098 ret = 't'; break;
1099 case (ELF::SHF_ALLOC | ELF::SHF_WRITE):
1100 ret = 'd'; break;
1101 case ELF::SHF_ALLOC:
1102 case (ELF::SHF_ALLOC | ELF::SHF_MERGE):
1103 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS):
1104 ret = 'r'; break;
1105 }
1106 break;
1107 case ELF::SHT_NOBITS: ret = 'b';
1108 }
1109 }
1110
1111 switch (getSymbolTableIndex(symb)) {
1112 case ELF::SHN_UNDEF:
1113 if (ret == '?')
1114 ret = 'U';
1115 break;
1116 case ELF::SHN_ABS: ret = 'a'; break;
1117 case ELF::SHN_COMMON: ret = 'c'; break;
1118 }
1119
1120 switch (symb->getBinding()) {
1121 case ELF::STB_GLOBAL: ret = ::toupper(ret); break;
1122 case ELF::STB_WEAK:
1123 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1124 ret = 'w';
1125 else
1126 if (symb->getType() == ELF::STT_OBJECT)
1127 ret = 'V';
1128 else
1129 ret = 'W';
1130 }
1131
1132 if (ret == '?' && symb->getType() == ELF::STT_SECTION) {
1133 StringRef name;
1134 if (error_code ec = getSymbolName(Symb, name))
1135 return ec;
1136 Result = StringSwitch<char>(name)
1137 .StartsWith(".debug", 'N')
1138 .StartsWith(".note", 'n')
1139 .Default('?');
1140 return object_error::success;
1141 }
1142
1143 Result = ret;
1144 return object_error::success;
1145 }
1146
1147 template<class ELFT>
1148 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb,
1149 SymbolRef::Type &Result) const {
1150 validateSymbol(Symb);
1151 const Elf_Sym *symb = getSymbol(Symb);
1152
1153 switch (symb->getType()) {
1154 case ELF::STT_NOTYPE:
1155 Result = SymbolRef::ST_Unknown;
1156 break;
1157 case ELF::STT_SECTION:
1158 Result = SymbolRef::ST_Debug;
1159 break;
1160 case ELF::STT_FILE:
1161 Result = SymbolRef::ST_File;
1162 break;
1163 case ELF::STT_FUNC:
1164 Result = SymbolRef::ST_Function;
1165 break;
1166 case ELF::STT_OBJECT:
1167 case ELF::STT_COMMON:
1168 case ELF::STT_TLS:
1169 Result = SymbolRef::ST_Data;
1170 break;
1171 default:
1172 Result = SymbolRef::ST_Other;
1173 break;
1174 }
1175 return object_error::success;
1176 }
1177
1178 template<class ELFT>
1179 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb,
1180 uint32_t &Result) const {
1181 validateSymbol(Symb);
1182 const Elf_Sym *symb = getSymbol(Symb);
1183
1184 Result = SymbolRef::SF_None;
1185
1186 if (symb->getBinding() != ELF::STB_LOCAL)
1187 Result |= SymbolRef::SF_Global;
1188
1189 if (symb->getBinding() == ELF::STB_WEAK)
1190 Result |= SymbolRef::SF_Weak;
1191
1192 if (symb->st_shndx == ELF::SHN_ABS)
1193 Result |= SymbolRef::SF_Absolute;
1194
1195 if (symb->getType() == ELF::STT_FILE ||
1196 symb->getType() == ELF::STT_SECTION)
1197 Result |= SymbolRef::SF_FormatSpecific;
1198
1199 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF)
1200 Result |= SymbolRef::SF_Undefined;
1201
1202 if (symb->getType() == ELF::STT_COMMON ||
1203 getSymbolTableIndex(symb) == ELF::SHN_COMMON)
1204 Result |= SymbolRef::SF_Common;
1205
1206 if (symb->getType() == ELF::STT_TLS)
1207 Result |= SymbolRef::SF_ThreadLocal;
1208
1209 return object_error::success;
1210 }
1211
1212 template<class ELFT>
1213 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb,
1214 section_iterator &Res) const {
1215 validateSymbol(Symb);
1216 const Elf_Sym *symb = getSymbol(Symb);
1217 const Elf_Shdr *sec = getSection(symb);
1218 if (!sec)
1219 Res = end_sections();
1220 else {
1221 DataRefImpl Sec;
1222 Sec.p = reinterpret_cast<intptr_t>(sec);
1223 Res = section_iterator(SectionRef(Sec, this));
1224 }
1225 return object_error::success;
1226 }
1227
1228 template<class ELFT>
1229 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb,
1230 uint64_t &Val) const {
1231 validateSymbol(Symb);
1232 const Elf_Sym *symb = getSymbol(Symb);
1233 Val = symb->st_value;
1234 return object_error::success;
1235 }
1236
1237 template<class ELFT>
1238 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec,
1239 SectionRef &Result) const {
1240 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p);
1241 sec += Header->e_shentsize;
1242 Sec.p = reinterpret_cast<intptr_t>(sec);
1243 Result = SectionRef(Sec, this);
1244 return object_error::success;
1245 }
1246
1247 template<class ELFT>
1248 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec,
1249 StringRef &Result) const {
1250 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1251 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name));
1252 return object_error::success;
1253 }
1254
1255 template<class ELFT>
1256 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec,
1257 uint64_t &Result) const {
1258 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1259 Result = sec->sh_addr;
1260 return object_error::success;
1261 }
1262
1263 template<class ELFT>
1264 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec,
1265 uint64_t &Result) const {
1266 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1267 Result = sec->sh_size;
1268 return object_error::success;
1269 }
1270
1271 template<class ELFT>
1272 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec,
1273 StringRef &Result) const {
1274 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1275 const char *start = (const char*)base() + sec->sh_offset;
1276 Result = StringRef(start, sec->sh_size);
1277 return object_error::success;
1278 }
1279
1280 template<class ELFT>
1281 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec,
1282 StringRef &Result) const {
1283 const char *start = (const char*)base() + Sec->sh_offset;
1284 Result = StringRef(start, Sec->sh_size);
1285 return object_error::success;
1286 }
1287
1288 template<class ELFT>
1289 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec,
1290 uint64_t &Result) const {
1291 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1292 Result = sec->sh_addralign;
1293 return object_error::success;
1294 }
1295
1296 template<class ELFT>
1297 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec,
1298 bool &Result) const {
1299 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1300 if (sec->sh_flags & ELF::SHF_EXECINSTR)
1301 Result = true;
1302 else
1303 Result = false;
1304 return object_error::success;
1305 }
1306
1307 template<class ELFT>
1308 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec,
1309 bool &Result) const {
1310 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1311 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1312 && sec->sh_type == ELF::SHT_PROGBITS)
1313 Result = true;
1314 else
1315 Result = false;
1316 return object_error::success;
1317 }
1318
1319 template<class ELFT>
1320 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec,
1321 bool &Result) const {
1322 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1323 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE)
1324 && sec->sh_type == ELF::SHT_NOBITS)
1325 Result = true;
1326 else
1327 Result = false;
1328 return object_error::success;
1329 }
1330
1331 template<class ELFT>
1332 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution(
1333 DataRefImpl Sec, bool &Result) const {
1334 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1335 if (sec->sh_flags & ELF::SHF_ALLOC)
1336 Result = true;
1337 else
1338 Result = false;
1339 return object_error::success;
1340 }
1341
1342 template<class ELFT>
1343 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec,
1344 bool &Result) const {
1345 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1346 if (sec->sh_type == ELF::SHT_NOBITS)
1347 Result = true;
1348 else
1349 Result = false;
1350 return object_error::success;
1351 }
1352
1353 template<class ELFT>
1354 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec,
1355 bool &Result) const {
1356 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1357 // For ELF, all zero-init sections are virtual (that is, they occupy no space
1358 // in the object image) and vice versa.
1359 Result = sec->sh_type == ELF::SHT_NOBITS;
1360 return object_error::success;
1361 }
1362
1363 template<class ELFT>
1364 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec,
1365 bool &Result) const {
1366 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1367 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR)
1368 Result = false;
1369 else
1370 Result = true;
1371 return object_error::success;
1372 }
1373
1374 template<class ELFT>
1375 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec,
1376 DataRefImpl Symb,
1377 bool &Result) const {
1378 // FIXME: Unimplemented.
1379 Result = false;
1380 return object_error::success;
1381 }
1382
1383 template<class ELFT>
1384 relocation_iterator
1385 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const {
1386 DataRefImpl RelData;
1387 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1388 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1389 if (sec != 0 && ittr != SectionRelocMap.end()) {
1390 RelData.w.a = getSection(ittr->second[0])->sh_info;
1391 RelData.w.b = ittr->second[0];
1392 RelData.w.c = 0;
1393 }
1394 return relocation_iterator(RelocationRef(RelData, this));
1395 }
1396
1397 template<class ELFT>
1398 relocation_iterator
1399 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const {
1400 DataRefImpl RelData;
1401 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
1402 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
1403 if (sec != 0 && ittr != SectionRelocMap.end()) {
1404 // Get the index of the last relocation section for this section.
1405 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
1406 const Elf_Shdr *relocsec = getSection(relocsecindex);
1407 RelData.w.a = relocsec->sh_info;
1408 RelData.w.b = relocsecindex;
1409 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
1410 }
1411 return relocation_iterator(RelocationRef(RelData, this));
1412 }
1413
1414 // Relocations
1415 template<class ELFT>
1416 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel,
1417 RelocationRef &Result) const {
1418 ++Rel.w.c;
1419 const Elf_Shdr *relocsec = getSection(Rel.w.b);
1420 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
1421 // We have reached the end of the relocations for this section. See if there
1422 // is another relocation section.
1423 typename RelocMap_t::mapped_type relocseclist =
1424 SectionRelocMap.lookup(getSection(Rel.w.a));
1425
1426 // Do a binary search for the current reloc section index (which must be
1427 // present). Then get the next one.
1428 typename RelocMap_t::mapped_type::const_iterator loc =
1429 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
1430 ++loc;
1431
1432 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
1433 // to the end iterator.
1434 if (loc != relocseclist.end()) {
1435 Rel.w.b = *loc;
1436 Rel.w.a = 0;
1437 }
1438 }
1439 Result = RelocationRef(Rel, this);
1440 return object_error::success;
1441 }
1442
1443 template<class ELFT>
1444 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel,
1445 SymbolRef &Result) const {
1446 uint32_t symbolIdx;
1447 const Elf_Shdr *sec = getSection(Rel.w.b);
1448 switch (sec->sh_type) {
1449 default :
1450 report_fatal_error("Invalid section type in Rel!");
1451 case ELF::SHT_REL : {
1452 symbolIdx = getRel(Rel)->getSymbol();
1453 break;
1454 }
1455 case ELF::SHT_RELA : {
1456 symbolIdx = getRela(Rel)->getSymbol();
1457 break;
1458 }
1459 }
1460 DataRefImpl SymbolData;
1461 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link);
1462 if (it == SymbolTableSectionsIndexMap.end())
1463 report_fatal_error("Relocation symbol table not found!");
1464 SymbolData.d.a = symbolIdx;
1465 SymbolData.d.b = it->second;
1466 Result = SymbolRef(SymbolData, this);
1467 return object_error::success;
1468 }
1469
1470 template<class ELFT>
1471 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel,
1472 uint64_t &Result) const {
1473 uint64_t offset;
1474 const Elf_Shdr *sec = getSection(Rel.w.b);
1475 switch (sec->sh_type) {
1476 default :
1477 report_fatal_error("Invalid section type in Rel!");
1478 case ELF::SHT_REL : {
1479 offset = getRel(Rel)->r_offset;
1480 break;
1481 }
1482 case ELF::SHT_RELA : {
1483 offset = getRela(Rel)->r_offset;
1484 break;
1485 }
1486 }
1487
1488 Result = offset;
1489 return object_error::success;
1490 }
1491
1492 template<class ELFT>
1493 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel,
1494 uint64_t &Result) const {
1495 uint64_t offset;
1496 const Elf_Shdr *sec = getSection(Rel.w.b);
1497 switch (sec->sh_type) {
1498 default :
1499 report_fatal_error("Invalid section type in Rel!");
1500 case ELF::SHT_REL : {
1501 offset = getRel(Rel)->r_offset;
1502 break;
1503 }
1504 case ELF::SHT_RELA : {
1505 offset = getRela(Rel)->r_offset;
1506 break;
1507 }
1508 }
1509
1510 Result = offset - sec->sh_addr;
1511 return object_error::success;
1512 }
1513
1514 template<class ELFT>
1515 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel,
1516 uint64_t &Result) const {
1517 const Elf_Shdr *sec = getSection(Rel.w.b);
1518 switch (sec->sh_type) {
1519 default :
1520 report_fatal_error("Invalid section type in Rel!");
1521 case ELF::SHT_REL : {
1522 Result = getRel(Rel)->getType();
1523 break;
1524 }
1525 case ELF::SHT_RELA : {
1526 Result = getRela(Rel)->getType();
1527 break;
1528 }
1529 }
1530 return object_error::success;
1531 }
1532
1533 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
1534 case ELF::enum: res = #enum; break;
1535
1536 template<class ELFT>
1537 error_code ELFObjectFile<ELFT>::getRelocationTypeName(
1538 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1539 const Elf_Shdr *sec = getSection(Rel.w.b);
1540 uint32_t type;
1541 StringRef res;
1542 switch (sec->sh_type) {
1543 default :
1544 return object_error::parse_failed;
1545 case ELF::SHT_REL : {
1546 type = getRel(Rel)->getType();
1547 break;
1548 }
1549 case ELF::SHT_RELA : {
1550 type = getRela(Rel)->getType();
1551 break;
1552 }
1553 }
1554 switch (Header->e_machine) {
1555 case ELF::EM_X86_64:
1556 switch (type) {
1557 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
1558 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
1559 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
1560 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
1561 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
1562 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
1563 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
1564 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
1565 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
1566 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
1567 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
1568 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
1569 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
1570 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
1571 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
1572 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
1573 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
1574 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
1589 default:
1590 res = "Unknown";
1591 }
1592 break;
1593 case ELF::EM_386:
1594 switch (type) {
1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
1635 default:
1636 res = "Unknown";
1637 }
1638 break;
1639 case ELF::EM_AARCH64:
1640 switch (type) {
1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE);
1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64);
1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32);
1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16);
1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64);
1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32);
1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16);
1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0);
1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC);
1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1);
1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC);
1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2);
1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC);
1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3);
1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0);
1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1);
1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2);
1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19);
1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21);
1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21);
1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC);
1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC);
1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14);
1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19);
1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26);
1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26);
1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC);
1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC);
1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC);
1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC);
1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE);
1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC);
1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2);
1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1);
1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC);
1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0);
1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC);
1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12);
1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12);
1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC);
1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12);
1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC);
1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12);
1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC);
1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12);
1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC);
1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12);
1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC);
1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC);
1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2);
1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1);
1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC);
1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0);
1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC);
1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12);
1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12);
1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC);
1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12);
1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC);
1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12);
1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC);
1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12);
1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC);
1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12);
1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC);
1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE);
1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC);
1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC);
1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL);
1714
1715 default:
1716 res = "Unknown";
1717 }
1718 break;
1719 case ELF::EM_ARM:
1720 switch (type) {
1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE);
1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24);
1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32);
1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32);
1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0);
1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16);
1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12);
1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5);
1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8);
1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32);
1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL);
1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8);
1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ);
1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC);
1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8);
1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25);
1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22);
1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32);
1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32);
1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32);
1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY);
1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT);
1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT);
1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE);
1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32);
1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL);
1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL);
1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32);
1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL);
1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24);
1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24);
1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS);
1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0);
1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8);
1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15);
1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC);
1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC);
1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK);
1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1);
1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31);
1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX);
1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2);
1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31);
1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC);
1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS);
1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC);
1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL);
1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC);
1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS);
1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC);
1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL);
1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19);
1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6);
1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0);
1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12);
1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI);
1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI);
1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC);
1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0);
1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC);
1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1);
1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2);
1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1);
1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2);
1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0);
1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1);
1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2);
1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0);
1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1);
1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2);
1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC);
1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0);
1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC);
1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1);
1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2);
1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0);
1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1);
1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2);
1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0);
1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1);
1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2);
1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0);
1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1);
1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2);
1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC);
1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL);
1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL);
1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC);
1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL);
1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL);
1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC);
1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL);
1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ);
1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL);
1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS);
1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS);
1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL);
1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12);
1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12);
1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX);
1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY);
1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT);
1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11);
1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8);
1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32);
1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32);
1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32);
1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32);
1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32);
1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12);
1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12);
1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP);
1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0);
1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1);
1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2);
1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3);
1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4);
1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5);
1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6);
1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7);
1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8);
1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9);
1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10);
1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11);
1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12);
1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13);
1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14);
1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15);
1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO);
1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16);
1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32);
1852 default:
1853 res = "Unknown";
1854 }
1855 break;
1856 case ELF::EM_HEXAGON:
1857 switch (type) {
1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE);
1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL);
1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL);
1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL);
1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16);
1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16);
1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32);
1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16);
1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8);
1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0);
1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1);
1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2);
1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3);
1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16);
1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL);
1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL);
1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X);
1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X);
1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X);
1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X);
1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X);
1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X);
1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X);
1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X);
1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X);
1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X);
1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X);
1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X);
1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X);
1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X);
1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X);
1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL);
1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY);
1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT);
1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT);
1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE);
1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL);
1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16);
1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16);
1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32);
1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16);
1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16);
1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32);
1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16);
1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32);
1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16);
1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16);
1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32);
1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16);
1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL);
1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16);
1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16);
1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32);
1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16);
1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16);
1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16);
1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32);
1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16);
1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16);
1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32);
1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16);
1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16);
1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16);
1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32);
1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16);
1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X);
1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X);
1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X);
1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X);
1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X);
1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X);
1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X);
1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X);
1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X);
1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X);
1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X);
1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X);
1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X);
1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X);
1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X);
1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X);
1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X);
1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X);
1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X);
1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X);
1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X);
1944 default:
1945 res = "Unknown";
1946 }
1947 break;
1948 default:
1949 res = "Unknown";
1950 }
1951 Result.append(res.begin(), res.end());
1952 return object_error::success;
1953 }
1954
1955 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
1956
1957 template<class ELFT>
1958 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo(
1959 DataRefImpl Rel, int64_t &Result) const {
1960 const Elf_Shdr *sec = getSection(Rel.w.b);
1961 switch (sec->sh_type) {
1962 default :
1963 report_fatal_error("Invalid section type in Rel!");
1964 case ELF::SHT_REL : {
1965 Result = 0;
1966 return object_error::success;
1967 }
1968 case ELF::SHT_RELA : {
1969 Result = getRela(Rel)->r_addend;
1970 return object_error::success;
1971 }
1972 }
1973 }
1974
1975 template<class ELFT>
1976 error_code ELFObjectFile<ELFT>::getRelocationValueString(
1977 DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1978 const Elf_Shdr *sec = getSection(Rel.w.b);
1979 uint8_t type;
1980 StringRef res;
1981 int64_t addend = 0;
1982 uint16_t symbol_index = 0;
1983 switch (sec->sh_type) {
1984 default:
1985 return object_error::parse_failed;
1986 case ELF::SHT_REL: {
1987 type = getRel(Rel)->getType();
1988 symbol_index = getRel(Rel)->getSymbol();
1989 // TODO: Read implicit addend from section data.
1990 break;
1991 }
1992 case ELF::SHT_RELA: {
1993 type = getRela(Rel)->getType();
1994 symbol_index = getRela(Rel)->getSymbol();
1995 addend = getRela(Rel)->r_addend;
1996 break;
1997 }
1998 }
1999 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
2000 StringRef symname;
2001 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname))
2002 return ec;
2003 switch (Header->e_machine) {
2004 case ELF::EM_X86_64:
2005 switch (type) {
2006 case ELF::R_X86_64_PC8:
2007 case ELF::R_X86_64_PC16:
2008 case ELF::R_X86_64_PC32: {
2009 std::string fmtbuf;
2010 raw_string_ostream fmt(fmtbuf);
2011 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
2012 fmt.flush();
2013 Result.append(fmtbuf.begin(), fmtbuf.end());
2014 }
2015 break;
2016 case ELF::R_X86_64_8:
2017 case ELF::R_X86_64_16:
2018 case ELF::R_X86_64_32:
2019 case ELF::R_X86_64_32S:
2020 case ELF::R_X86_64_64: {
2021 std::string fmtbuf;
2022 raw_string_ostream fmt(fmtbuf);
2023 fmt << symname << (addend < 0 ? "" : "+") << addend;
2024 fmt.flush();
2025 Result.append(fmtbuf.begin(), fmtbuf.end());
2026 }
2027 break;
2028 default:
2029 res = "Unknown";
2030 }
2031 break;
2032 case ELF::EM_AARCH64:
2033 case ELF::EM_ARM:
2034 case ELF::EM_HEXAGON:
2035 res = symname;
2036 break;
2037 default:
2038 res = "Unknown";
2039 }
2040 if (Result.empty())
2041 Result.append(res.begin(), res.end());
2042 return object_error::success;
2043 }
2044
2045 // Verify that the last byte in the string table in a null.
2046 template<class ELFT>
2047 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const {
2048 const char *strtab = (const char*)base() + sh->sh_offset;
2049 if (strtab[sh->sh_size - 1] != 0)
2050 // FIXME: Proper error handling.
2051 report_fatal_error("String table must end with a null terminator!");
2052 }
2053
2054 template<class ELFT>
2055 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
2056 : ObjectFile(getELFType(
2057 static_cast<endianness>(ELFT::TargetEndianness) == support::little,
2058 ELFT::Is64Bits),
2059 Object,
2060 ec)
2061 , isDyldELFObject(false)
2062 , SectionHeaderTable(0)
2063 , dot_shstrtab_sec(0)
2064 , dot_strtab_sec(0)
2065 , dot_dynstr_sec(0)
2066 , dot_dynamic_sec(0)
2067 , dot_gnu_version_sec(0)
2068 , dot_gnu_version_r_sec(0)
2069 , dot_gnu_version_d_sec(0)
2070 , dt_soname(0)
2071 {
2072
2073 const uint64_t FileSize = Data->getBufferSize();
2074
2075 if (sizeof(Elf_Ehdr) > FileSize)
2076 // FIXME: Proper error handling.
2077 report_fatal_error("File too short!");
2078
2079 Header = reinterpret_cast<const Elf_Ehdr *>(base());
2080
2081 if (Header->e_shoff == 0)
2082 return;
2083
2084 const uint64_t SectionTableOffset = Header->e_shoff;
2085
2086 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize)
2087 // FIXME: Proper error handling.
2088 report_fatal_error("Section header table goes past end of file!");
2089
2090 // The getNumSections() call below depends on SectionHeaderTable being set.
2091 SectionHeaderTable =
2092 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset);
2093 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize;
2094
2095 if (SectionTableOffset + SectionTableSize > FileSize)
2096 // FIXME: Proper error handling.
2097 report_fatal_error("Section table goes past end of file!");
2098
2099 // To find the symbol tables we walk the section table to find SHT_SYMTAB.
2100 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0;
2101 const Elf_Shdr* sh = SectionHeaderTable;
2102
2103 // Reserve SymbolTableSections[0] for .dynsym
2104 SymbolTableSections.push_back(NULL);
2105
2106 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) {
2107 switch (sh->sh_type) {
2108 case ELF::SHT_SYMTAB_SHNDX: {
2109 if (SymbolTableSectionHeaderIndex)
2110 // FIXME: Proper error handling.
2111 report_fatal_error("More than one .symtab_shndx!");
2112 SymbolTableSectionHeaderIndex = sh;
2113 break;
2114 }
2115 case ELF::SHT_SYMTAB: {
2116 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
2117 SymbolTableSections.push_back(sh);
2118 break;
2119 }
2120 case ELF::SHT_DYNSYM: {
2121 if (SymbolTableSections[0] != NULL)
2122 // FIXME: Proper error handling.
2123 report_fatal_error("More than one .dynsym!");
2124 SymbolTableSectionsIndexMap[i] = 0;
2125 SymbolTableSections[0] = sh;
2126 break;
2127 }
2128 case ELF::SHT_REL:
2129 case ELF::SHT_RELA: {
2130 SectionRelocMap[getSection(sh->sh_info)].push_back(i);
2131 break;
2132 }
2133 case ELF::SHT_DYNAMIC: {
2134 if (dot_dynamic_sec != NULL)
2135 // FIXME: Proper error handling.
2136 report_fatal_error("More than one .dynamic!");
2137 dot_dynamic_sec = sh;
2138 break;
2139 }
2140 case ELF::SHT_GNU_versym: {
2141 if (dot_gnu_version_sec != NULL)
2142 // FIXME: Proper error handling.
2143 report_fatal_error("More than one .gnu.version section!");
2144 dot_gnu_version_sec = sh;
2145 break;
2146 }
2147 case ELF::SHT_GNU_verdef: {
2148 if (dot_gnu_version_d_sec != NULL)
2149 // FIXME: Proper error handling.
2150 report_fatal_error("More than one .gnu.version_d section!");
2151 dot_gnu_version_d_sec = sh;
2152 break;
2153 }
2154 case ELF::SHT_GNU_verneed: {
2155 if (dot_gnu_version_r_sec != NULL)
2156 // FIXME: Proper error handling.
2157 report_fatal_error("More than one .gnu.version_r section!");
2158 dot_gnu_version_r_sec = sh;
2159 break;
2160 }
2161 }
2162 ++sh;
2163 }
2164
2165 // Sort section relocation lists by index.
2166 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
2167 e = SectionRelocMap.end(); i != e; ++i) {
2168 std::sort(i->second.begin(), i->second.end());
2169 }
2170
2171 // Get string table sections.
2172 dot_shstrtab_sec = getSection(getStringTableIndex());
2173 if (dot_shstrtab_sec) {
2174 // Verify that the last byte in the string table in a null.
2175 VerifyStrTab(dot_shstrtab_sec);
2176 }
2177
2178 // Merge this into the above loop.
2179 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable),
2180 *e = i + getNumSections() * Header->e_shentsize;
2181 i != e; i += Header->e_shentsize) {
2182 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i);
2183 if (sh->sh_type == ELF::SHT_STRTAB) {
2184 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name));
2185 if (SectionName == ".strtab") {
2186 if (dot_strtab_sec != 0)
2187 // FIXME: Proper error handling.
2188 report_fatal_error("Already found section named .strtab!");
2189 dot_strtab_sec = sh;
2190 VerifyStrTab(dot_strtab_sec);
2191 } else if (SectionName == ".dynstr") {
2192 if (dot_dynstr_sec != 0)
2193 // FIXME: Proper error handling.
2194 report_fatal_error("Already found section named .dynstr!");
2195 dot_dynstr_sec = sh;
2196 VerifyStrTab(dot_dynstr_sec);
2197 }
2198 }
2199 }
2200
2201 // Build symbol name side-mapping if there is one.
2202 if (SymbolTableSectionHeaderIndex) {
2203 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() +
2204 SymbolTableSectionHeaderIndex->sh_offset);
2205 error_code ec;
2206 for (symbol_iterator si = begin_symbols(),
2207 se = end_symbols(); si != se; si.increment(ec)) {
2208 if (ec)
2209 report_fatal_error("Fewer extended symbol table entries than symbols!");
2210 if (*ShndxTable != ELF::SHN_UNDEF)
2211 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable;
2212 ++ShndxTable;
2213 }
2214 }
2215 }
2216
2217 // Get the symbol table index in the symtab section given a symbol
2218 template<class ELFT>
2219 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const {
2220 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
2221 const Elf_Shdr *SymTab = *SymbolTableSections.begin();
2222 uintptr_t SymLoc = uintptr_t(Sym);
2223 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
2224 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
2225 uint64_t SymOffset = SymLoc - SymTabLoc;
2226 assert(SymOffset % SymTab->sh_entsize == 0 &&
2227 "Symbol not multiple of symbol size!");
2228 return SymOffset / SymTab->sh_entsize;
2229 }
2230
2231 template<class ELFT>
2232 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const {
2233 DataRefImpl SymbolData;
2234 if (SymbolTableSections.size() <= 1) {
2235 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2236 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2237 } else {
2238 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2239 SymbolData.d.b = 1; // The 0th table is .dynsym
2240 }
2241 return symbol_iterator(SymbolRef(SymbolData, this));
2242 }
2243
2244 template<class ELFT>
2245 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const {
2246 DataRefImpl SymbolData;
2247 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2248 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2249 return symbol_iterator(SymbolRef(SymbolData, this));
2250 }
2251
2252 template<class ELFT>
2253 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const {
2254 DataRefImpl SymbolData;
2255 if (SymbolTableSections[0] == NULL) {
2256 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2257 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2258 } else {
2259 SymbolData.d.a = 1; // The 0th symbol in ELF is fake.
2260 SymbolData.d.b = 0; // The 0th table is .dynsym
2261 }
2262 return symbol_iterator(SymbolRef(SymbolData, this));
2263 }
2264
2265 template<class ELFT>
2266 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const {
2267 DataRefImpl SymbolData;
2268 SymbolData.d.a = std::numeric_limits<uint32_t>::max();
2269 SymbolData.d.b = std::numeric_limits<uint32_t>::max();
2270 return symbol_iterator(SymbolRef(SymbolData, this));
2271 }
2272
2273 template<class ELFT>
2274 section_iterator ELFObjectFile<ELFT>::begin_sections() const {
2275 DataRefImpl ret;
2276 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
2277 return section_iterator(SectionRef(ret, this));
2278 }
2279
2280 template<class ELFT>
2281 section_iterator ELFObjectFile<ELFT>::end_sections() const {
2282 DataRefImpl ret;
2283 ret.p = reinterpret_cast<intptr_t>(base()
2284 + Header->e_shoff
2285 + (Header->e_shentsize*getNumSections()));
2286 return section_iterator(SectionRef(ret, this));
2287 }
2288
2289 template<class ELFT>
2290 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2291 ELFObjectFile<ELFT>::begin_dynamic_table() const {
2292 if (dot_dynamic_sec)
2293 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2294 (const char *)base() + dot_dynamic_sec->sh_offset);
2295 return Elf_Dyn_iterator(0, 0);
2296 }
2297
2298 template<class ELFT>
2299 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator
2300 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const {
2301 if (dot_dynamic_sec) {
2302 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize,
2303 (const char *)base() + dot_dynamic_sec->sh_offset +
2304 dot_dynamic_sec->sh_size);
2305
2306 if (NULLEnd) {
2307 Elf_Dyn_iterator Start = begin_dynamic_table();
2308 for (; Start != Ret && Start->getTag() != ELF::DT_NULL; ++Start)
2309 ;
2310 // Include the DT_NULL.
2311 if (Start != Ret)
2312 ++Start;
2313 Ret = Start;
2314 }
2315 return Ret;
2316 }
2317 return Elf_Dyn_iterator(0, 0);
2318 }
2319
2320 template<class ELFT>
2321 StringRef ELFObjectFile<ELFT>::getLoadName() const {
2322 if (!dt_soname) {
2323 // Find the DT_SONAME entry
2324 Elf_Dyn_iterator it = begin_dynamic_table();
2325 Elf_Dyn_iterator ie = end_dynamic_table();
2326 for (; it != ie; ++it) {
2327 if (it->getTag() == ELF::DT_SONAME)
2328 break;
2329 }
2330 if (it != ie) {
2331 if (dot_dynstr_sec == NULL)
2332 report_fatal_error("Dynamic string table is missing");
2333 dt_soname = getString(dot_dynstr_sec, it->getVal());
2334 } else {
2335 dt_soname = "";
2336 }
2337 }
2338 return dt_soname;
2339 }
2340
2341 template<class ELFT>
2342 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const {
2343 // Find the first DT_NEEDED entry
2344 Elf_Dyn_iterator i = begin_dynamic_table();
2345 Elf_Dyn_iterator e = end_dynamic_table();
2346 for (; i != e; ++i) {
2347 if (i->getTag() == ELF::DT_NEEDED)
2348 break;
2349 }
2350
2351 DataRefImpl DRI;
2352 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2353 return library_iterator(LibraryRef(DRI, this));
2354 }
2355
2356 template<class ELFT>
2357 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data,
2358 LibraryRef &Result) const {
2359 // Use the same DataRefImpl format as DynRef.
2360 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2361 reinterpret_cast<const char *>(Data.p));
2362 Elf_Dyn_iterator e = end_dynamic_table();
2363
2364 // Skip the current dynamic table entry.
2365 ++i;
2366
2367 // Find the next DT_NEEDED entry.
2368 for (; i != e && i->getTag() != ELF::DT_NEEDED; ++i);
2369
2370 DataRefImpl DRI;
2371 DRI.p = reinterpret_cast<uintptr_t>(i.get());
2372 Result = LibraryRef(DRI, this);
2373 return object_error::success;
2374 }
2375
2376 template<class ELFT>
2377 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data,
2378 StringRef &Res) const {
2379 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize,
2380 reinterpret_cast<const char *>(Data.p));
2381 if (i == end_dynamic_table())
2382 report_fatal_error("getLibraryPath() called on iterator end");
2383
2384 if (i->getTag() != ELF::DT_NEEDED)
2385 report_fatal_error("Invalid library_iterator");
2386
2387 // This uses .dynstr to lookup the name of the DT_NEEDED entry.
2388 // THis works as long as DT_STRTAB == .dynstr. This is true most of
2389 // the time, but the specification allows exceptions.
2390 // TODO: This should really use DT_STRTAB instead. Doing this requires
2391 // reading the program headers.
2392 if (dot_dynstr_sec == NULL)
2393 report_fatal_error("Dynamic string table is missing");
2394 Res = getString(dot_dynstr_sec, i->getVal());
2395 return object_error::success;
2396 }
2397
2398 template<class ELFT>
2399 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const {
2400 Elf_Dyn_iterator e = end_dynamic_table();
2401 DataRefImpl DRI;
2402 DRI.p = reinterpret_cast<uintptr_t>(e.get());
2403 return library_iterator(LibraryRef(DRI, this));
2404 }
2405
2406 template<class ELFT>
2407 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const {
2408 return ELFT::Is64Bits ? 8 : 4;
2409 }
2410
2411 template<class ELFT>
2412 StringRef ELFObjectFile<ELFT>::getFileFormatName() const {
2413 switch(Header->e_ident[ELF::EI_CLASS]) {
2414 case ELF::ELFCLASS32:
2415 switch(Header->e_machine) {
2416 case ELF::EM_386:
2417 return "ELF32-i386";
2418 case ELF::EM_X86_64:
2419 return "ELF32-x86-64";
2420 case ELF::EM_ARM:
2421 return "ELF32-arm";
2422 case ELF::EM_HEXAGON:
2423 return "ELF32-hexagon";
2424 case ELF::EM_MIPS:
2425 return "ELF32-mips";
2426 default:
2427 return "ELF32-unknown";
2428 }
2429 case ELF::ELFCLASS64:
2430 switch(Header->e_machine) {
2431 case ELF::EM_386:
2432 return "ELF64-i386";
2433 case ELF::EM_X86_64:
2434 return "ELF64-x86-64";
2435 case ELF::EM_AARCH64:
2436 return "ELF64-aarch64";
2437 case ELF::EM_PPC64:
2438 return "ELF64-ppc64";
2439 default:
2440 return "ELF64-unknown";
2441 }
2442 default:
2443 // FIXME: Proper error handling.
2444 report_fatal_error("Invalid ELFCLASS!");
2445 }
2446 }
2447
2448 template<class ELFT>
2449 unsigned ELFObjectFile<ELFT>::getArch() const {
2450 switch(Header->e_machine) {
2451 case ELF::EM_386:
2452 return Triple::x86;
2453 case ELF::EM_X86_64:
2454 return Triple::x86_64;
2455 case ELF::EM_AARCH64:
2456 return Triple::aarch64;
2457 case ELF::EM_ARM:
2458 return Triple::arm;
2459 case ELF::EM_HEXAGON:
2460 return Triple::hexagon;
2461 case ELF::EM_MIPS:
2462 return (ELFT::TargetEndianness == support::little) ?
2463 Triple::mipsel : Triple::mips;
2464 case ELF::EM_PPC64:
2465 return Triple::ppc64;
2466 default:
2467 return Triple::UnknownArch;
2468 }
2469 }
2470
2471 template<class ELFT>
2472 uint64_t ELFObjectFile<ELFT>::getNumSections() const {
2473 assert(Header && "Header not initialized!");
2474 if (Header->e_shnum == ELF::SHN_UNDEF) {
2475 assert(SectionHeaderTable && "SectionHeaderTable not initialized!");
2476 return SectionHeaderTable->sh_size;
2477 }
2478 return Header->e_shnum;
2479 }
2480
2481 template<class ELFT>
2482 uint64_t
2483 ELFObjectFile<ELFT>::getStringTableIndex() const {
2484 if (Header->e_shnum == ELF::SHN_UNDEF) {
2485 if (Header->e_shstrndx == ELF::SHN_HIRESERVE)
2486 return SectionHeaderTable->sh_link;
2487 if (Header->e_shstrndx >= getNumSections())
2488 return 0;
2489 }
2490 return Header->e_shstrndx;
2491 }
2492
2493 template<class ELFT>
2494 template<typename T>
2495 inline const T *
2496 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const {
2497 return getEntry<T>(getSection(Section), Entry);
2498 }
2499
2500 template<class ELFT>
2501 template<typename T>
2502 inline const T *
2503 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const {
2504 return reinterpret_cast<const T *>(
2505 base()
2506 + Section->sh_offset
2507 + (Entry * Section->sh_entsize));
2508 }
2509
2510 template<class ELFT>
2511 const typename ELFObjectFile<ELFT>::Elf_Sym *
2512 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {
2513 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
2514 }
2515
2516 template<class ELFT>
2517 const typename ELFObjectFile<ELFT>::Elf_Rel *
2518 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const {
2519 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
2520 }
2521
2522 template<class ELFT>
2523 const typename ELFObjectFile<ELFT>::Elf_Rela *
2524 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const {
2525 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
2526 }
2527
2528 template<class ELFT>
2529 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2530 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const {
2531 const Elf_Shdr *sec = getSection(Symb.d.b);
2532 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
2533 // FIXME: Proper error handling.
2534 report_fatal_error("Invalid symbol table section!");
2535 return sec;
2536 }
2537
2538 template<class ELFT>
2539 const typename ELFObjectFile<ELFT>::Elf_Shdr *
2540 ELFObjectFile<ELFT>::getSection(uint32_t index) const {
2541 if (index == 0)
2542 return 0;
2543 if (!SectionHeaderTable || index >= getNumSections())
2544 // FIXME: Proper error handling.
2545 report_fatal_error("Invalid section index!");
2546
2547 return reinterpret_cast<const Elf_Shdr *>(
2548 reinterpret_cast<const char *>(SectionHeaderTable)
2549 + (index * Header->e_shentsize));
2550 }
2551
2552 template<class ELFT>
2553 const char *ELFObjectFile<ELFT>::getString(uint32_t section,
2554 ELF::Elf32_Word offset) const {
2555 return getString(getSection(section), offset);
2556 }
2557
2558 template<class ELFT>
2559 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section,
2560 ELF::Elf32_Word offset) const {
2561 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!");
2562 if (offset >= section->sh_size)
2563 // FIXME: Proper error handling.
2564 report_fatal_error("Symbol name offset outside of string table!");
2565 return (const char *)base() + section->sh_offset + offset;
2566 }
2567
2568 template<class ELFT>
2569 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section,
2570 const Elf_Sym *symb,
2571 StringRef &Result) const {
2572 if (symb->st_name == 0) {
2573 const Elf_Shdr *section = getSection(symb);
2574 if (!section)
2575 Result = "";
2576 else
2577 Result = getString(dot_shstrtab_sec, section->sh_name);
2578 return object_error::success;
2579 }
2580
2581 if (section == SymbolTableSections[0]) {
2582 // Symbol is in .dynsym, use .dynstr string table
2583 Result = getString(dot_dynstr_sec, symb->st_name);
2584 } else {
2585 // Use the default symbol table name section.
2586 Result = getString(dot_strtab_sec, symb->st_name);
2587 }
2588 return object_error::success;
2589 }
2590
2591 template<class ELFT>
2592 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section,
2593 StringRef &Result) const {
2594 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name));
2595 return object_error::success;
2596 }
2597
2598 template<class ELFT>
2599 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section,
2600 const Elf_Sym *symb,
2601 StringRef &Version,
2602 bool &IsDefault) const {
2603 // Handle non-dynamic symbols.
2604 if (section != SymbolTableSections[0]) {
2605 // Non-dynamic symbols can have versions in their names
2606 // A name of the form 'foo@V1' indicates version 'V1', non-default.
2607 // A name of the form 'foo@@V2' indicates version 'V2', default version.
2608 StringRef Name;
2609 error_code ec = getSymbolName(section, symb, Name);
2610 if (ec != object_error::success)
2611 return ec;
2612 size_t atpos = Name.find('@');
2613 if (atpos == StringRef::npos) {
2614 Version = "";
2615 IsDefault = false;
2616 return object_error::success;
2617 }
2618 ++atpos;
2619 if (atpos < Name.size() && Name[atpos] == '@') {
2620 IsDefault = true;
2621 ++atpos;
2622 } else {
2623 IsDefault = false;
2624 }
2625 Version = Name.substr(atpos);
2626 return object_error::success;
2627 }
2628
2629 // This is a dynamic symbol. Look in the GNU symbol version table.
2630 if (dot_gnu_version_sec == NULL) {
2631 // No version table.
2632 Version = "";
2633 IsDefault = false;
2634 return object_error::success;
2635 }
2636
2637 // Determine the position in the symbol table of this entry.
2638 const char *sec_start = (const char*)base() + section->sh_offset;
2639 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize;
2640
2641 // Get the corresponding version index entry
2642 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index);
2643 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION;
2644
2645 // Special markers for unversioned symbols.
2646 if (version_index == ELF::VER_NDX_LOCAL ||
2647 version_index == ELF::VER_NDX_GLOBAL) {
2648 Version = "";
2649 IsDefault = false;
2650 return object_error::success;
2651 }
2652
2653 // Lookup this symbol in the version table
2654 LoadVersionMap();
2655 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull())
2656 report_fatal_error("Symbol has version index without corresponding "
2657 "define or reference entry");
2658 const VersionMapEntry &entry = VersionMap[version_index];
2659
2660 // Get the version name string
2661 size_t name_offset;
2662 if (entry.isVerdef()) {
2663 // The first Verdaux entry holds the name.
2664 name_offset = entry.getVerdef()->getAux()->vda_name;
2665 } else {
2666 name_offset = entry.getVernaux()->vna_name;
2667 }
2668 Version = getString(dot_dynstr_sec, name_offset);
2669
2670 // Set IsDefault
2671 if (entry.isVerdef()) {
2672 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN);
2673 } else {
2674 IsDefault = false;
2675 }
2676
2677 return object_error::success;
2678 }
2679
2680 /// This is a generic interface for retrieving GNU symbol version
2681 /// information from an ELFObjectFile.
2682 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj,
2683 const SymbolRef &Sym,
2684 StringRef &Version,
2685 bool &IsDefault) {
2686 // Little-endian 32-bit
2687 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj =
2688 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj))
2689 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2690
2691 // Big-endian 32-bit
2692 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj =
2693 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj))
2694 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2695
2696 // Little-endian 64-bit
2697 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj =
2698 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj))
2699 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2700
2701 // Big-endian 64-bit
2702 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj =
2703 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj))
2704 return ELFObj->getSymbolVersion(Sym, Version, IsDefault);
2705
2706 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF");
2707 }
2708
2709 }
2710 }
2711
2712 #endif
2713