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bae7f79e ILT |
1 | // object.h -- support for an object file for linking in gold -*- C++ -*- |
2 | ||
3 | #ifndef GOLD_OBJECT_H | |
4 | #define GOLD_OBJECT_H | |
5 | ||
14bfc3f5 | 6 | #include <cassert> |
92e059d8 | 7 | #include <string> |
a2fb1b05 | 8 | #include <vector> |
14bfc3f5 | 9 | |
bae7f79e | 10 | #include "elfcpp.h" |
645f8123 | 11 | #include "elfcpp_file.h" |
bae7f79e | 12 | #include "fileread.h" |
14bfc3f5 | 13 | #include "target.h" |
bae7f79e ILT |
14 | |
15 | namespace gold | |
16 | { | |
17 | ||
92e059d8 | 18 | class General_options; |
75f65a3e | 19 | class Stringpool; |
a2fb1b05 | 20 | class Layout; |
61ba1cf9 ILT |
21 | class Output_section; |
22 | class Output_file; | |
f6ce93d6 | 23 | class Dynobj; |
a2fb1b05 | 24 | |
bae7f79e ILT |
25 | // Data to pass from read_symbols() to add_symbols(). |
26 | ||
27 | struct Read_symbols_data | |
28 | { | |
12e14209 ILT |
29 | // Section headers. |
30 | File_view* section_headers; | |
31 | // Section names. | |
32 | File_view* section_names; | |
33 | // Size of section name data in bytes. | |
34 | off_t section_names_size; | |
bae7f79e ILT |
35 | // Symbol data. |
36 | File_view* symbols; | |
37 | // Size of symbol data in bytes. | |
38 | off_t symbols_size; | |
39 | // Symbol names. | |
40 | File_view* symbol_names; | |
41 | // Size of symbol name data in bytes. | |
42 | off_t symbol_names_size; | |
43 | }; | |
44 | ||
92e059d8 ILT |
45 | // Data about a single relocation section. This is read in |
46 | // read_relocs and processed in scan_relocs. | |
47 | ||
48 | struct Section_relocs | |
49 | { | |
50 | // Index of reloc section. | |
51 | unsigned int reloc_shndx; | |
52 | // Index of section that relocs apply to. | |
53 | unsigned int data_shndx; | |
54 | // Contents of reloc section. | |
55 | File_view* contents; | |
56 | // Reloc section type. | |
57 | unsigned int sh_type; | |
58 | // Number of reloc entries. | |
59 | size_t reloc_count; | |
60 | }; | |
61 | ||
62 | // Relocations in an object file. This is read in read_relocs and | |
63 | // processed in scan_relocs. | |
64 | ||
65 | struct Read_relocs_data | |
66 | { | |
67 | typedef std::vector<Section_relocs> Relocs_list; | |
68 | // The relocations. | |
69 | Relocs_list relocs; | |
70 | // The local symbols. | |
71 | File_view* local_symbols; | |
72 | }; | |
73 | ||
f6ce93d6 ILT |
74 | // Object is an abstract base class which represents either a 32-bit |
75 | // or a 64-bit input object. This can be a regular object file | |
76 | // (ET_REL) or a shared object (ET_DYN). | |
bae7f79e ILT |
77 | |
78 | class Object | |
79 | { | |
80 | public: | |
81 | // NAME is the name of the object as we would report it to the user | |
82 | // (e.g., libfoo.a(bar.o) if this is in an archive. INPUT_FILE is | |
83 | // used to read the file. OFFSET is the offset within the input | |
84 | // file--0 for a .o or .so file, something else for a .a file. | |
14bfc3f5 ILT |
85 | Object(const std::string& name, Input_file* input_file, bool is_dynamic, |
86 | off_t offset = 0) | |
87 | : name_(name), input_file_(input_file), offset_(offset), | |
f6ce93d6 | 88 | is_dynamic_(is_dynamic), target_(NULL) |
bae7f79e ILT |
89 | { } |
90 | ||
91 | virtual ~Object() | |
92 | { } | |
93 | ||
14bfc3f5 | 94 | // Return the name of the object as we would report it to the tuser. |
bae7f79e ILT |
95 | const std::string& |
96 | name() const | |
97 | { return this->name_; } | |
98 | ||
14bfc3f5 ILT |
99 | // Return whether this is a dynamic object. |
100 | bool | |
101 | is_dynamic() const | |
102 | { return this->is_dynamic_; } | |
103 | ||
14bfc3f5 ILT |
104 | // Return the target structure associated with this object. |
105 | Target* | |
a2fb1b05 | 106 | target() const |
14bfc3f5 ILT |
107 | { return this->target_; } |
108 | ||
a2fb1b05 ILT |
109 | // Lock the underlying file. |
110 | void | |
111 | lock() | |
112 | { this->input_file_->file().lock(); } | |
113 | ||
114 | // Unlock the underlying file. | |
115 | void | |
116 | unlock() | |
117 | { this->input_file_->file().unlock(); } | |
118 | ||
119 | // Return whether the underlying file is locked. | |
120 | bool | |
121 | is_locked() const | |
122 | { return this->input_file_->file().is_locked(); } | |
123 | ||
14bfc3f5 ILT |
124 | // Return the sized target structure associated with this object. |
125 | // This is like the target method but it returns a pointer of | |
126 | // appropriate checked type. | |
127 | template<int size, bool big_endian> | |
128 | Sized_target<size, big_endian>* | |
5482377d | 129 | sized_target(ACCEPT_SIZE_ENDIAN_ONLY); |
bae7f79e | 130 | |
92e059d8 | 131 | // Read the symbol information. |
12e14209 ILT |
132 | void |
133 | read_symbols(Read_symbols_data* sd) | |
134 | { return this->do_read_symbols(sd); } | |
a2fb1b05 | 135 | |
92e059d8 ILT |
136 | // Pass sections which should be included in the link to the Layout |
137 | // object, and record where the sections go in the output file. | |
138 | void | |
f6ce93d6 ILT |
139 | layout(const General_options& options, Symbol_table* symtab, |
140 | Layout* layout, Read_symbols_data* sd) | |
141 | { this->do_layout(options, symtab, layout, sd); } | |
92e059d8 | 142 | |
a2fb1b05 ILT |
143 | // Add symbol information to the global symbol table. |
144 | void | |
12e14209 ILT |
145 | add_symbols(Symbol_table* symtab, Read_symbols_data* sd) |
146 | { this->do_add_symbols(symtab, sd); } | |
a2fb1b05 | 147 | |
f6ce93d6 ILT |
148 | // Return a view of the contents of a section. Set *PLEN to the |
149 | // size. | |
150 | const unsigned char* | |
645f8123 | 151 | section_contents(unsigned int shndx, off_t* plen); |
f6ce93d6 ILT |
152 | |
153 | // Return the name of a section given a section index. This is only | |
154 | // used for error messages. | |
155 | std::string | |
156 | section_name(unsigned int shnum) | |
157 | { return this->do_section_name(shnum); } | |
158 | ||
645f8123 ILT |
159 | // Functions and types for the elfcpp::Elf_file interface. This |
160 | // permit us to use Object as the File template parameter for | |
161 | // elfcpp::Elf_file. | |
162 | ||
163 | // The View class is returned by view. It must support a single | |
164 | // method, data(). This is trivial, because get_view does what we | |
165 | // need. | |
166 | class View | |
167 | { | |
168 | public: | |
169 | View(const unsigned char* p) | |
170 | : p_(p) | |
171 | { } | |
172 | ||
173 | const unsigned char* | |
174 | data() const | |
175 | { return this->p_; } | |
176 | ||
177 | private: | |
178 | const unsigned char* p_; | |
179 | }; | |
180 | ||
181 | // Return a View. | |
182 | View | |
183 | view(off_t file_offset, off_t data_size) | |
184 | { return View(this->get_view(file_offset, data_size)); } | |
185 | ||
186 | // Report an error. | |
187 | void | |
188 | error(const char* format, ...) ATTRIBUTE_PRINTF_2; | |
189 | ||
190 | // A location in the file. | |
191 | struct Location | |
192 | { | |
193 | off_t file_offset; | |
194 | off_t data_size; | |
195 | ||
196 | Location(off_t fo, off_t ds) | |
197 | : file_offset(fo), data_size(ds) | |
198 | { } | |
199 | }; | |
200 | ||
201 | // Get a View given a Location. | |
202 | View view(Location loc) | |
203 | { return View(this->get_view(loc.file_offset, loc.data_size)); } | |
204 | ||
f6ce93d6 ILT |
205 | protected: |
206 | // Read the symbols--implemented by child class. | |
207 | virtual void | |
208 | do_read_symbols(Read_symbols_data*) = 0; | |
209 | ||
210 | // Lay out sections--implemented by child class. | |
211 | virtual void | |
212 | do_layout(const General_options&, Symbol_table*, Layout*, | |
213 | Read_symbols_data*) = 0; | |
214 | ||
215 | // Add symbol information to the global symbol table--implemented by | |
216 | // child class. | |
217 | virtual void | |
218 | do_add_symbols(Symbol_table*, Read_symbols_data*) = 0; | |
219 | ||
645f8123 ILT |
220 | // Return the location of the contents of a section. Implemented by |
221 | // child class. | |
222 | virtual Location | |
223 | do_section_contents(unsigned int shnum) = 0; | |
f6ce93d6 ILT |
224 | |
225 | // Get the name of a section--implemented by child class. | |
226 | virtual std::string | |
227 | do_section_name(unsigned int shnum) = 0; | |
228 | ||
229 | // Get the file. | |
230 | Input_file* | |
231 | input_file() const | |
232 | { return this->input_file_; } | |
233 | ||
234 | // Get the offset into the file. | |
235 | off_t | |
236 | offset() const | |
237 | { return this->offset_; } | |
238 | ||
239 | // Get a view into the underlying file. | |
240 | const unsigned char* | |
241 | get_view(off_t start, off_t size) | |
242 | { return this->input_file_->file().get_view(start + this->offset_, size); } | |
243 | ||
244 | // Get a lasting view into the underlying file. | |
245 | File_view* | |
246 | get_lasting_view(off_t start, off_t size) | |
247 | { | |
248 | return this->input_file_->file().get_lasting_view(start + this->offset_, | |
249 | size); | |
250 | } | |
251 | ||
252 | // Read data from the underlying file. | |
253 | void | |
254 | read(off_t start, off_t size, void* p) | |
255 | { this->input_file_->file().read(start + this->offset_, size, p); } | |
256 | ||
257 | // Set the target. | |
258 | void | |
259 | set_target(Target* target) | |
260 | { this->target_ = target; } | |
261 | ||
262 | private: | |
263 | // This class may not be copied. | |
264 | Object(const Object&); | |
265 | Object& operator=(const Object&); | |
266 | ||
267 | // Name of object as printed to user. | |
268 | std::string name_; | |
269 | // For reading the file. | |
270 | Input_file* input_file_; | |
271 | // Offset within the file--0 for an object file, non-0 for an | |
272 | // archive. | |
273 | off_t offset_; | |
274 | // Whether this is a dynamic object. | |
275 | bool is_dynamic_; | |
276 | // Target functions--may be NULL if the target is not known. | |
277 | Target* target_; | |
278 | }; | |
279 | ||
280 | // Implement sized_target inline for efficiency. This approach breaks | |
281 | // static type checking, but is made safe using asserts. | |
282 | ||
283 | template<int size, bool big_endian> | |
284 | inline Sized_target<size, big_endian>* | |
285 | Object::sized_target(ACCEPT_SIZE_ENDIAN_ONLY) | |
286 | { | |
287 | assert(this->target_->get_size() == size); | |
288 | assert(this->target_->is_big_endian() ? big_endian : !big_endian); | |
289 | return static_cast<Sized_target<size, big_endian>*>(this->target_); | |
290 | } | |
291 | ||
292 | // A regular object (ET_REL). This is an abstract base class itself. | |
293 | // The implementations is the template class Sized_relobj. | |
294 | ||
295 | class Relobj : public Object | |
296 | { | |
297 | public: | |
298 | Relobj(const std::string& name, Input_file* input_file, off_t offset = 0) | |
299 | : Object(name, input_file, false, offset) | |
300 | { } | |
301 | ||
92e059d8 | 302 | // Read the relocs. |
a2fb1b05 | 303 | void |
92e059d8 ILT |
304 | read_relocs(Read_relocs_data* rd) |
305 | { return this->do_read_relocs(rd); } | |
306 | ||
307 | // Scan the relocs and adjust the symbol table. | |
308 | void | |
309 | scan_relocs(const General_options& options, Symbol_table* symtab, | |
ead1e424 ILT |
310 | Layout* layout, Read_relocs_data* rd) |
311 | { return this->do_scan_relocs(options, symtab, layout, rd); } | |
a2fb1b05 | 312 | |
75f65a3e ILT |
313 | // Initial local symbol processing: set the offset where local |
314 | // symbol information will be stored; add local symbol names to | |
315 | // *POOL; return the offset following the local symbols. | |
316 | off_t | |
317 | finalize_local_symbols(off_t off, Stringpool* pool) | |
318 | { return this->do_finalize_local_symbols(off, pool); } | |
319 | ||
61ba1cf9 ILT |
320 | // Relocate the input sections and write out the local symbols. |
321 | void | |
322 | relocate(const General_options& options, const Symbol_table* symtab, | |
92e059d8 ILT |
323 | const Layout* layout, Output_file* of) |
324 | { return this->do_relocate(options, symtab, layout, of); } | |
61ba1cf9 | 325 | |
a783673b ILT |
326 | // Return whether an input section is being included in the link. |
327 | bool | |
328 | is_section_included(unsigned int shnum) const | |
329 | { | |
330 | assert(shnum < this->map_to_output_.size()); | |
331 | return this->map_to_output_[shnum].output_section != NULL; | |
332 | } | |
333 | ||
334 | // Given a section index, return the corresponding Output_section | |
335 | // (which will be NULL if the section is not included in the link) | |
336 | // and set *POFF to the offset within that section. | |
337 | inline Output_section* | |
338 | output_section(unsigned int shnum, off_t* poff); | |
339 | ||
ead1e424 ILT |
340 | // Set the offset of an input section within its output section. |
341 | void | |
342 | set_section_offset(unsigned int shndx, off_t off) | |
343 | { | |
344 | assert(shndx < this->map_to_output_.size()); | |
345 | this->map_to_output_[shndx].offset = off; | |
346 | } | |
347 | ||
a783673b | 348 | protected: |
a2fb1b05 ILT |
349 | // What we need to know to map an input section to an output |
350 | // section. We keep an array of these, one for each input section, | |
351 | // indexed by the input section number. | |
352 | struct Map_to_output | |
353 | { | |
354 | // The output section. This is NULL if the input section is to be | |
355 | // discarded. | |
356 | Output_section* output_section; | |
357 | // The offset within the output section. | |
358 | off_t offset; | |
359 | }; | |
360 | ||
92e059d8 ILT |
361 | // Read the relocs--implemented by child class. |
362 | virtual void | |
363 | do_read_relocs(Read_relocs_data*) = 0; | |
364 | ||
365 | // Scan the relocs--implemented by child class. | |
366 | virtual void | |
ead1e424 ILT |
367 | do_scan_relocs(const General_options&, Symbol_table*, Layout*, |
368 | Read_relocs_data*) = 0; | |
92e059d8 | 369 | |
75f65a3e ILT |
370 | // Finalize local symbols--implemented by child class. |
371 | virtual off_t | |
372 | do_finalize_local_symbols(off_t, Stringpool*) = 0; | |
373 | ||
61ba1cf9 ILT |
374 | // Relocate the input sections and write out the local |
375 | // symbols--implemented by child class. | |
376 | virtual void | |
377 | do_relocate(const General_options& options, const Symbol_table* symtab, | |
92e059d8 ILT |
378 | const Layout*, Output_file* of) = 0; |
379 | ||
a2fb1b05 ILT |
380 | // Get the number of sections. |
381 | unsigned int | |
75f65a3e | 382 | shnum() const |
a2fb1b05 ILT |
383 | { return this->shnum_; } |
384 | ||
385 | // Set the number of sections. | |
386 | void | |
387 | set_shnum(int shnum) | |
388 | { this->shnum_ = shnum; } | |
389 | ||
a2fb1b05 ILT |
390 | // Return the vector mapping input sections to output sections. |
391 | std::vector<Map_to_output>& | |
392 | map_to_output() | |
393 | { return this->map_to_output_; } | |
394 | ||
bae7f79e | 395 | private: |
a2fb1b05 ILT |
396 | // Number of input sections. |
397 | unsigned int shnum_; | |
a2fb1b05 ILT |
398 | // Mapping from input sections to output section. |
399 | std::vector<Map_to_output> map_to_output_; | |
bae7f79e ILT |
400 | }; |
401 | ||
a783673b ILT |
402 | // Implement Object::output_section inline for efficiency. |
403 | inline Output_section* | |
f6ce93d6 | 404 | Relobj::output_section(unsigned int shnum, off_t* poff) |
a783673b ILT |
405 | { |
406 | assert(shnum < this->map_to_output_.size()); | |
407 | const Map_to_output& mo(this->map_to_output_[shnum]); | |
408 | *poff = mo.offset; | |
409 | return mo.output_section; | |
410 | } | |
411 | ||
14bfc3f5 | 412 | // A regular object file. This is size and endian specific. |
bae7f79e ILT |
413 | |
414 | template<int size, bool big_endian> | |
f6ce93d6 | 415 | class Sized_relobj : public Relobj |
bae7f79e ILT |
416 | { |
417 | public: | |
f6ce93d6 | 418 | Sized_relobj(const std::string& name, Input_file* input_file, off_t offset, |
bae7f79e ILT |
419 | const typename elfcpp::Ehdr<size, big_endian>&); |
420 | ||
f6ce93d6 | 421 | ~Sized_relobj(); |
bae7f79e | 422 | |
a2fb1b05 | 423 | // Set up the object file based on the ELF header. |
bae7f79e ILT |
424 | void |
425 | setup(const typename elfcpp::Ehdr<size, big_endian>&); | |
426 | ||
a2fb1b05 | 427 | // Read the symbols. |
bae7f79e | 428 | void |
12e14209 | 429 | do_read_symbols(Read_symbols_data*); |
14bfc3f5 | 430 | |
12e14209 ILT |
431 | // Add the symbols to the symbol table. |
432 | void | |
433 | do_add_symbols(Symbol_table*, Read_symbols_data*); | |
a2fb1b05 | 434 | |
92e059d8 ILT |
435 | // Read the relocs. |
436 | void | |
437 | do_read_relocs(Read_relocs_data*); | |
438 | ||
439 | // Scan the relocs and adjust the symbol table. | |
440 | void | |
ead1e424 ILT |
441 | do_scan_relocs(const General_options&, Symbol_table*, Layout*, |
442 | Read_relocs_data*); | |
92e059d8 ILT |
443 | |
444 | // Lay out the input sections. | |
445 | void | |
f6ce93d6 ILT |
446 | do_layout(const General_options&, Symbol_table*, Layout*, |
447 | Read_symbols_data*); | |
92e059d8 | 448 | |
75f65a3e ILT |
449 | // Finalize the local symbols. |
450 | off_t | |
451 | do_finalize_local_symbols(off_t, Stringpool*); | |
452 | ||
61ba1cf9 ILT |
453 | // Relocate the input sections and write out the local symbols. |
454 | void | |
455 | do_relocate(const General_options& options, const Symbol_table* symtab, | |
92e059d8 ILT |
456 | const Layout*, Output_file* of); |
457 | ||
458 | // Get the name of a section. | |
459 | std::string | |
645f8123 ILT |
460 | do_section_name(unsigned int shndx) |
461 | { return this->elf_file_.section_name(shndx); } | |
61ba1cf9 | 462 | |
645f8123 ILT |
463 | // Return the location of the contents of a section. |
464 | Location | |
465 | do_section_contents(unsigned int shndx) | |
466 | { return this->elf_file_.section_contents(shndx); } | |
f6ce93d6 | 467 | |
a2fb1b05 | 468 | // Return the appropriate Sized_target structure. |
14bfc3f5 ILT |
469 | Sized_target<size, big_endian>* |
470 | sized_target() | |
274e99f9 | 471 | { |
593f47df ILT |
472 | return this->Object::sized_target |
473 | SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
474 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
274e99f9 | 475 | } |
bae7f79e ILT |
476 | |
477 | private: | |
a2fb1b05 | 478 | // For convenience. |
f6ce93d6 | 479 | typedef Sized_relobj<size, big_endian> This; |
a2fb1b05 ILT |
480 | static const int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size; |
481 | static const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
482 | static const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
75f65a3e ILT |
483 | typedef elfcpp::Shdr<size, big_endian> Shdr; |
484 | ||
a2fb1b05 ILT |
485 | // Whether to include a section group in the link. |
486 | bool | |
487 | include_section_group(Layout*, unsigned int, | |
488 | const elfcpp::Shdr<size, big_endian>&, | |
489 | std::vector<bool>*); | |
490 | ||
491 | // Whether to include a linkonce section in the link. | |
492 | bool | |
493 | include_linkonce_section(Layout*, const char*, | |
494 | const elfcpp::Shdr<size, big_endian>&); | |
495 | ||
61ba1cf9 ILT |
496 | // Views and sizes when relocating. |
497 | struct View_size | |
498 | { | |
499 | unsigned char* view; | |
500 | typename elfcpp::Elf_types<size>::Elf_Addr address; | |
501 | off_t offset; | |
502 | off_t view_size; | |
503 | }; | |
504 | ||
505 | typedef std::vector<View_size> Views; | |
506 | ||
507 | // Write section data to the output file. Record the views and | |
508 | // sizes in VIEWS for use when relocating. | |
509 | void | |
510 | write_sections(const unsigned char* pshdrs, Output_file*, Views*); | |
511 | ||
512 | // Relocate the sections in the output file. | |
513 | void | |
92e059d8 ILT |
514 | relocate_sections(const General_options& options, const Symbol_table*, |
515 | const Layout*, const unsigned char* pshdrs, Views*); | |
61ba1cf9 ILT |
516 | |
517 | // Write out the local symbols. | |
518 | void | |
519 | write_local_symbols(Output_file*, const Stringpool*); | |
520 | ||
645f8123 ILT |
521 | // General access to the ELF file. |
522 | elfcpp::Elf_file<size, big_endian, Object> elf_file_; | |
12e14209 ILT |
523 | // If non-NULL, a view of the section header data. |
524 | File_view* section_headers_; | |
bae7f79e | 525 | // Index of SHT_SYMTAB section. |
645f8123 | 526 | unsigned int symtab_shndx_; |
61ba1cf9 ILT |
527 | // The number of local symbols. |
528 | unsigned int local_symbol_count_; | |
529 | // The number of local symbols which go into the output file. | |
530 | unsigned int output_local_symbol_count_; | |
14bfc3f5 ILT |
531 | // The entries in the symbol table for the external symbols. |
532 | Symbol** symbols_; | |
75f65a3e ILT |
533 | // File offset for local symbols. |
534 | off_t local_symbol_offset_; | |
61ba1cf9 ILT |
535 | // Values of local symbols. |
536 | typename elfcpp::Elf_types<size>::Elf_Addr *values_; | |
bae7f79e ILT |
537 | }; |
538 | ||
54dc6425 | 539 | // A class to manage the list of all objects. |
a2fb1b05 | 540 | |
54dc6425 ILT |
541 | class Input_objects |
542 | { | |
543 | public: | |
544 | Input_objects() | |
f6ce93d6 | 545 | : relobj_list_(), target_(NULL) |
54dc6425 ILT |
546 | { } |
547 | ||
f6ce93d6 ILT |
548 | // The type of the list of input relocateable objects. |
549 | typedef std::vector<Relobj*> Relobj_list; | |
550 | typedef Relobj_list::const_iterator Relobj_iterator; | |
551 | ||
552 | // The type of the list of input dynamic objects. | |
553 | typedef std::vector<Dynobj*> Dynobj_list; | |
554 | typedef Dynobj_list::const_iterator Dynobj_iterator; | |
54dc6425 ILT |
555 | |
556 | // Add an object to the list. | |
557 | void | |
558 | add_object(Object*); | |
559 | ||
75f65a3e ILT |
560 | // Get the target we should use for the output file. |
561 | Target* | |
562 | target() const | |
563 | { return this->target_; } | |
564 | ||
f6ce93d6 ILT |
565 | // Iterate over all regular objects. |
566 | ||
567 | Relobj_iterator | |
568 | relobj_begin() const | |
569 | { return this->relobj_list_.begin(); } | |
570 | ||
571 | Relobj_iterator | |
572 | relobj_end() const | |
573 | { return this->relobj_list_.end(); } | |
574 | ||
575 | // Iterate over all dynamic objects. | |
576 | ||
577 | Dynobj_iterator | |
578 | dynobj_begin() const | |
579 | { return this->dynobj_list_.begin(); } | |
54dc6425 | 580 | |
f6ce93d6 ILT |
581 | Dynobj_iterator |
582 | dynobj_end() const | |
583 | { return this->dynobj_list_.end(); } | |
54dc6425 ILT |
584 | |
585 | // Return whether we have seen any dynamic objects. | |
586 | bool | |
587 | any_dynamic() const | |
f6ce93d6 | 588 | { return !this->dynobj_list_.empty(); } |
54dc6425 ILT |
589 | |
590 | private: | |
591 | Input_objects(const Input_objects&); | |
592 | Input_objects& operator=(const Input_objects&); | |
593 | ||
f6ce93d6 ILT |
594 | Relobj_list relobj_list_; |
595 | Dynobj_list dynobj_list_; | |
75f65a3e | 596 | Target* target_; |
54dc6425 | 597 | }; |
a2fb1b05 | 598 | |
92e059d8 ILT |
599 | // Some of the information we pass to the relocation routines. We |
600 | // group this together to avoid passing a dozen different arguments. | |
601 | ||
602 | template<int size, bool big_endian> | |
603 | struct Relocate_info | |
604 | { | |
605 | // Command line options. | |
606 | const General_options* options; | |
607 | // Symbol table. | |
608 | const Symbol_table* symtab; | |
609 | // Layout. | |
610 | const Layout* layout; | |
611 | // Object being relocated. | |
f6ce93d6 | 612 | Sized_relobj<size, big_endian>* object; |
92e059d8 ILT |
613 | // Number of local symbols. |
614 | unsigned int local_symbol_count; | |
615 | // Values of local symbols. | |
616 | typename elfcpp::Elf_types<size>::Elf_Addr *values; | |
617 | // Global symbols. | |
618 | Symbol** symbols; | |
619 | // Section index of relocation section. | |
620 | unsigned int reloc_shndx; | |
621 | // Section index of section being relocated. | |
622 | unsigned int data_shndx; | |
623 | ||
624 | // Return a string showing the location of a relocation. This is | |
625 | // only used for error messages. | |
626 | std::string | |
627 | location(size_t relnum, off_t reloffset) const; | |
628 | }; | |
629 | ||
bae7f79e ILT |
630 | // Return an Object appropriate for the input file. P is BYTES long, |
631 | // and holds the ELF header. | |
632 | ||
61ba1cf9 ILT |
633 | extern Object* |
634 | make_elf_object(const std::string& name, Input_file*, | |
635 | off_t offset, const unsigned char* p, | |
636 | off_t bytes); | |
bae7f79e ILT |
637 | |
638 | } // end namespace gold | |
639 | ||
640 | #endif // !defined(GOLD_OBJECT_H) |