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14bfc3f5 ILT |
1 | // symtab.cc -- the gold symbol table |
2 | ||
3 | #include "gold.h" | |
4 | ||
5 | #include <cassert> | |
6 | #include <stdint.h> | |
7 | #include <string> | |
8 | #include <utility> | |
9 | ||
10 | #include "object.h" | |
75f65a3e | 11 | #include "output.h" |
61ba1cf9 | 12 | #include "target.h" |
645f8123 | 13 | #include "workqueue.h" |
14bfc3f5 ILT |
14 | #include "symtab.h" |
15 | ||
16 | namespace gold | |
17 | { | |
18 | ||
19 | // Class Symbol. | |
20 | ||
ead1e424 ILT |
21 | // Initialize fields in Symbol. This initializes everything except u_ |
22 | // and source_. | |
14bfc3f5 | 23 | |
14bfc3f5 | 24 | void |
ead1e424 ILT |
25 | Symbol::init_fields(const char* name, const char* version, |
26 | elfcpp::STT type, elfcpp::STB binding, | |
27 | elfcpp::STV visibility, unsigned char nonvis) | |
14bfc3f5 ILT |
28 | { |
29 | this->name_ = name; | |
30 | this->version_ = version; | |
ead1e424 ILT |
31 | this->got_offset_ = 0; |
32 | this->type_ = type; | |
33 | this->binding_ = binding; | |
34 | this->visibility_ = visibility; | |
35 | this->nonvis_ = nonvis; | |
36 | this->is_target_special_ = false; | |
1564db8d ILT |
37 | this->is_def_ = false; |
38 | this->is_forwarder_ = false; | |
ead1e424 ILT |
39 | this->in_dyn_ = false; |
40 | this->has_got_offset_ = false; | |
f6ce93d6 | 41 | this->has_warning_ = false; |
ead1e424 ILT |
42 | } |
43 | ||
44 | // Initialize the fields in the base class Symbol for SYM in OBJECT. | |
45 | ||
46 | template<int size, bool big_endian> | |
47 | void | |
48 | Symbol::init_base(const char* name, const char* version, Object* object, | |
49 | const elfcpp::Sym<size, big_endian>& sym) | |
50 | { | |
51 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), | |
52 | sym.get_st_visibility(), sym.get_st_nonvis()); | |
53 | this->u_.from_object.object = object; | |
54 | // FIXME: Handle SHN_XINDEX. | |
55 | this->u_.from_object.shnum = sym.get_st_shndx(); | |
56 | this->source_ = FROM_OBJECT; | |
1564db8d | 57 | this->in_dyn_ = object->is_dynamic(); |
14bfc3f5 ILT |
58 | } |
59 | ||
ead1e424 ILT |
60 | // Initialize the fields in the base class Symbol for a symbol defined |
61 | // in an Output_data. | |
62 | ||
63 | void | |
64 | Symbol::init_base(const char* name, Output_data* od, elfcpp::STT type, | |
65 | elfcpp::STB binding, elfcpp::STV visibility, | |
66 | unsigned char nonvis, bool offset_is_from_end) | |
67 | { | |
68 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
69 | this->u_.in_output_data.output_data = od; | |
70 | this->u_.in_output_data.offset_is_from_end = offset_is_from_end; | |
71 | this->source_ = IN_OUTPUT_DATA; | |
72 | } | |
73 | ||
74 | // Initialize the fields in the base class Symbol for a symbol defined | |
75 | // in an Output_segment. | |
76 | ||
77 | void | |
78 | Symbol::init_base(const char* name, Output_segment* os, elfcpp::STT type, | |
79 | elfcpp::STB binding, elfcpp::STV visibility, | |
80 | unsigned char nonvis, Segment_offset_base offset_base) | |
81 | { | |
82 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
83 | this->u_.in_output_segment.output_segment = os; | |
84 | this->u_.in_output_segment.offset_base = offset_base; | |
85 | this->source_ = IN_OUTPUT_SEGMENT; | |
86 | } | |
87 | ||
88 | // Initialize the fields in the base class Symbol for a symbol defined | |
89 | // as a constant. | |
90 | ||
91 | void | |
92 | Symbol::init_base(const char* name, elfcpp::STT type, | |
93 | elfcpp::STB binding, elfcpp::STV visibility, | |
94 | unsigned char nonvis) | |
95 | { | |
96 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
97 | this->source_ = CONSTANT; | |
98 | } | |
99 | ||
100 | // Initialize the fields in Sized_symbol for SYM in OBJECT. | |
14bfc3f5 ILT |
101 | |
102 | template<int size> | |
103 | template<bool big_endian> | |
104 | void | |
105 | Sized_symbol<size>::init(const char* name, const char* version, Object* object, | |
106 | const elfcpp::Sym<size, big_endian>& sym) | |
107 | { | |
108 | this->init_base(name, version, object, sym); | |
109 | this->value_ = sym.get_st_value(); | |
ead1e424 ILT |
110 | this->symsize_ = sym.get_st_size(); |
111 | } | |
112 | ||
113 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
114 | // Output_data. | |
115 | ||
116 | template<int size> | |
117 | void | |
118 | Sized_symbol<size>::init(const char* name, Output_data* od, | |
119 | Value_type value, Size_type symsize, | |
120 | elfcpp::STT type, elfcpp::STB binding, | |
121 | elfcpp::STV visibility, unsigned char nonvis, | |
122 | bool offset_is_from_end) | |
123 | { | |
124 | this->init_base(name, od, type, binding, visibility, nonvis, | |
125 | offset_is_from_end); | |
126 | this->value_ = value; | |
127 | this->symsize_ = symsize; | |
128 | } | |
129 | ||
130 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
131 | // Output_segment. | |
132 | ||
133 | template<int size> | |
134 | void | |
135 | Sized_symbol<size>::init(const char* name, Output_segment* os, | |
136 | Value_type value, Size_type symsize, | |
137 | elfcpp::STT type, elfcpp::STB binding, | |
138 | elfcpp::STV visibility, unsigned char nonvis, | |
139 | Segment_offset_base offset_base) | |
140 | { | |
141 | this->init_base(name, os, type, binding, visibility, nonvis, offset_base); | |
142 | this->value_ = value; | |
143 | this->symsize_ = symsize; | |
144 | } | |
145 | ||
146 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
147 | // constant. | |
148 | ||
149 | template<int size> | |
150 | void | |
151 | Sized_symbol<size>::init(const char* name, Value_type value, Size_type symsize, | |
152 | elfcpp::STT type, elfcpp::STB binding, | |
153 | elfcpp::STV visibility, unsigned char nonvis) | |
154 | { | |
155 | this->init_base(name, type, binding, visibility, nonvis); | |
156 | this->value_ = value; | |
157 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
158 | } |
159 | ||
160 | // Class Symbol_table. | |
161 | ||
162 | Symbol_table::Symbol_table() | |
ead1e424 | 163 | : size_(0), saw_undefined_(0), offset_(0), table_(), namepool_(), |
f6ce93d6 | 164 | forwarders_(), commons_(), warnings_() |
14bfc3f5 ILT |
165 | { |
166 | } | |
167 | ||
168 | Symbol_table::~Symbol_table() | |
169 | { | |
170 | } | |
171 | ||
172 | // The hash function. The key is always canonicalized, so we use a | |
173 | // simple combination of the pointers. | |
174 | ||
175 | size_t | |
176 | Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key& key) const | |
177 | { | |
f0641a0b | 178 | return key.first ^ key.second; |
14bfc3f5 ILT |
179 | } |
180 | ||
181 | // The symbol table key equality function. This is only called with | |
182 | // canonicalized name and version strings, so we can use pointer | |
183 | // comparison. | |
184 | ||
185 | bool | |
186 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, | |
187 | const Symbol_table_key& k2) const | |
188 | { | |
189 | return k1.first == k2.first && k1.second == k2.second; | |
190 | } | |
191 | ||
192 | // Make TO a symbol which forwards to FROM. | |
193 | ||
194 | void | |
195 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
196 | { | |
197 | assert(!from->is_forwarder() && !to->is_forwarder()); | |
198 | this->forwarders_[from] = to; | |
199 | from->set_forwarder(); | |
200 | } | |
201 | ||
61ba1cf9 ILT |
202 | // Resolve the forwards from FROM, returning the real symbol. |
203 | ||
14bfc3f5 ILT |
204 | Symbol* |
205 | Symbol_table::resolve_forwards(Symbol* from) const | |
206 | { | |
207 | assert(from->is_forwarder()); | |
208 | Unordered_map<Symbol*, Symbol*>::const_iterator p = | |
209 | this->forwarders_.find(from); | |
210 | assert(p != this->forwarders_.end()); | |
211 | return p->second; | |
212 | } | |
213 | ||
61ba1cf9 ILT |
214 | // Look up a symbol by name. |
215 | ||
216 | Symbol* | |
217 | Symbol_table::lookup(const char* name, const char* version) const | |
218 | { | |
f0641a0b ILT |
219 | Stringpool::Key name_key; |
220 | name = this->namepool_.find(name, &name_key); | |
61ba1cf9 ILT |
221 | if (name == NULL) |
222 | return NULL; | |
f0641a0b ILT |
223 | |
224 | Stringpool::Key version_key = 0; | |
61ba1cf9 ILT |
225 | if (version != NULL) |
226 | { | |
f0641a0b | 227 | version = this->namepool_.find(version, &version_key); |
61ba1cf9 ILT |
228 | if (version == NULL) |
229 | return NULL; | |
230 | } | |
231 | ||
f0641a0b | 232 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
233 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
234 | if (p == this->table_.end()) | |
235 | return NULL; | |
236 | return p->second; | |
237 | } | |
238 | ||
14bfc3f5 ILT |
239 | // Resolve a Symbol with another Symbol. This is only used in the |
240 | // unusual case where there are references to both an unversioned | |
241 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
242 | // version is the default version. Because this is unusual, we do |
243 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 244 | |
1564db8d | 245 | template<int size, bool big_endian> |
14bfc3f5 | 246 | void |
5482377d ILT |
247 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from |
248 | ACCEPT_SIZE_ENDIAN) | |
14bfc3f5 | 249 | { |
1564db8d ILT |
250 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
251 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
252 | // We don't bother to set the st_name field. | |
253 | esym.put_st_value(from->value()); | |
254 | esym.put_st_size(from->symsize()); | |
255 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 256 | esym.put_st_other(from->visibility(), from->nonvis()); |
1564db8d ILT |
257 | esym.put_st_shndx(from->shnum()); |
258 | Symbol_table::resolve(to, esym.sym(), from->object()); | |
14bfc3f5 ILT |
259 | } |
260 | ||
261 | // Add one symbol from OBJECT to the symbol table. NAME is symbol | |
262 | // name and VERSION is the version; both are canonicalized. DEF is | |
263 | // whether this is the default version. | |
264 | ||
265 | // If DEF is true, then this is the definition of a default version of | |
266 | // a symbol. That means that any lookup of NAME/NULL and any lookup | |
267 | // of NAME/VERSION should always return the same symbol. This is | |
268 | // obvious for references, but in particular we want to do this for | |
269 | // definitions: overriding NAME/NULL should also override | |
270 | // NAME/VERSION. If we don't do that, it would be very hard to | |
271 | // override functions in a shared library which uses versioning. | |
272 | ||
273 | // We implement this by simply making both entries in the hash table | |
274 | // point to the same Symbol structure. That is easy enough if this is | |
275 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
276 | // that we have seen both already, in which case they will both have | |
277 | // independent entries in the symbol table. We can't simply change | |
278 | // the symbol table entry, because we have pointers to the entries | |
279 | // attached to the object files. So we mark the entry attached to the | |
280 | // object file as a forwarder, and record it in the forwarders_ map. | |
281 | // Note that entries in the hash table will never be marked as | |
282 | // forwarders. | |
283 | ||
284 | template<int size, bool big_endian> | |
285 | Symbol* | |
f6ce93d6 | 286 | Symbol_table::add_from_object(Object* object, |
14bfc3f5 | 287 | const char *name, |
f0641a0b ILT |
288 | Stringpool::Key name_key, |
289 | const char *version, | |
290 | Stringpool::Key version_key, | |
291 | bool def, | |
14bfc3f5 ILT |
292 | const elfcpp::Sym<size, big_endian>& sym) |
293 | { | |
294 | Symbol* const snull = NULL; | |
295 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
296 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
297 | snull)); | |
14bfc3f5 ILT |
298 | |
299 | std::pair<typename Symbol_table_type::iterator, bool> insdef = | |
300 | std::make_pair(this->table_.end(), false); | |
301 | if (def) | |
302 | { | |
f0641a0b ILT |
303 | const Stringpool::Key vnull_key = 0; |
304 | insdef = this->table_.insert(std::make_pair(std::make_pair(name_key, | |
305 | vnull_key), | |
14bfc3f5 ILT |
306 | snull)); |
307 | } | |
308 | ||
309 | // ins.first: an iterator, which is a pointer to a pair. | |
310 | // ins.first->first: the key (a pair of name and version). | |
311 | // ins.first->second: the value (Symbol*). | |
312 | // ins.second: true if new entry was inserted, false if not. | |
313 | ||
1564db8d | 314 | Sized_symbol<size>* ret; |
ead1e424 ILT |
315 | bool was_undefined; |
316 | bool was_common; | |
14bfc3f5 ILT |
317 | if (!ins.second) |
318 | { | |
319 | // We already have an entry for NAME/VERSION. | |
593f47df ILT |
320 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) (ins.first->second |
321 | SELECT_SIZE(size)); | |
14bfc3f5 | 322 | assert(ret != NULL); |
ead1e424 ILT |
323 | |
324 | was_undefined = ret->is_undefined(); | |
325 | was_common = ret->is_common(); | |
326 | ||
14bfc3f5 ILT |
327 | Symbol_table::resolve(ret, sym, object); |
328 | ||
329 | if (def) | |
330 | { | |
331 | if (insdef.second) | |
332 | { | |
333 | // This is the first time we have seen NAME/NULL. Make | |
334 | // NAME/NULL point to NAME/VERSION. | |
335 | insdef.first->second = ret; | |
336 | } | |
337 | else | |
338 | { | |
339 | // This is the unfortunate case where we already have | |
340 | // entries for both NAME/VERSION and NAME/NULL. | |
274e99f9 | 341 | const Sized_symbol<size>* sym2; |
593f47df | 342 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
343 | insdef.first->second |
344 | SELECT_SIZE(size)); | |
593f47df | 345 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
5482377d | 346 | ret, sym2 SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
347 | this->make_forwarder(insdef.first->second, ret); |
348 | insdef.first->second = ret; | |
349 | } | |
350 | } | |
351 | } | |
352 | else | |
353 | { | |
354 | // This is the first time we have seen NAME/VERSION. | |
355 | assert(ins.first->second == NULL); | |
ead1e424 ILT |
356 | |
357 | was_undefined = false; | |
358 | was_common = false; | |
359 | ||
14bfc3f5 ILT |
360 | if (def && !insdef.second) |
361 | { | |
362 | // We already have an entry for NAME/NULL. Make | |
363 | // NAME/VERSION point to it. | |
593f47df ILT |
364 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
365 | insdef.first->second | |
366 | SELECT_SIZE(size)); | |
14bfc3f5 ILT |
367 | Symbol_table::resolve(ret, sym, object); |
368 | ins.first->second = ret; | |
369 | } | |
370 | else | |
371 | { | |
f6ce93d6 ILT |
372 | Sized_target<size, big_endian>* target = |
373 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
374 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
375 | if (!target->has_make_symbol()) |
376 | ret = new Sized_symbol<size>(); | |
377 | else | |
14bfc3f5 | 378 | { |
1564db8d ILT |
379 | ret = target->make_symbol(); |
380 | if (ret == NULL) | |
14bfc3f5 ILT |
381 | { |
382 | // This means that we don't want a symbol table | |
383 | // entry after all. | |
384 | if (!def) | |
385 | this->table_.erase(ins.first); | |
386 | else | |
387 | { | |
388 | this->table_.erase(insdef.first); | |
389 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
390 | this->table_.erase(std::make_pair(name_key, |
391 | version_key)); | |
14bfc3f5 ILT |
392 | } |
393 | return NULL; | |
394 | } | |
395 | } | |
14bfc3f5 | 396 | |
1564db8d ILT |
397 | ret->init(name, version, object, sym); |
398 | ||
14bfc3f5 ILT |
399 | ins.first->second = ret; |
400 | if (def) | |
401 | { | |
402 | // This is the first time we have seen NAME/NULL. Point | |
403 | // it at the new entry for NAME/VERSION. | |
404 | assert(insdef.second); | |
405 | insdef.first->second = ret; | |
406 | } | |
407 | } | |
408 | } | |
409 | ||
ead1e424 ILT |
410 | // Record every time we see a new undefined symbol, to speed up |
411 | // archive groups. | |
412 | if (!was_undefined && ret->is_undefined()) | |
413 | ++this->saw_undefined_; | |
414 | ||
415 | // Keep track of common symbols, to speed up common symbol | |
416 | // allocation. | |
417 | if (!was_common && ret->is_common()) | |
418 | this->commons_.push_back(ret); | |
419 | ||
14bfc3f5 ILT |
420 | return ret; |
421 | } | |
422 | ||
f6ce93d6 | 423 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
424 | |
425 | template<int size, bool big_endian> | |
426 | void | |
427 | Symbol_table::add_from_object( | |
f6ce93d6 ILT |
428 | Relobj* object, |
429 | const unsigned char* syms, | |
14bfc3f5 ILT |
430 | size_t count, |
431 | const char* sym_names, | |
432 | size_t sym_name_size, | |
433 | Symbol** sympointers) | |
434 | { | |
435 | // We take the size from the first object we see. | |
436 | if (this->get_size() == 0) | |
437 | this->set_size(size); | |
438 | ||
439 | if (size != this->get_size() || size != object->target()->get_size()) | |
440 | { | |
441 | fprintf(stderr, _("%s: %s: mixing 32-bit and 64-bit ELF objects\n"), | |
442 | program_name, object->name().c_str()); | |
443 | gold_exit(false); | |
444 | } | |
445 | ||
a783673b ILT |
446 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
447 | ||
f6ce93d6 | 448 | const unsigned char* p = syms; |
a783673b | 449 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
450 | { |
451 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 452 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 453 | |
a783673b | 454 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
455 | if (st_name >= sym_name_size) |
456 | { | |
54dc6425 ILT |
457 | fprintf(stderr, |
458 | _("%s: %s: bad global symbol name offset %u at %lu\n"), | |
14bfc3f5 ILT |
459 | program_name, object->name().c_str(), st_name, |
460 | static_cast<unsigned long>(i)); | |
461 | gold_exit(false); | |
462 | } | |
463 | ||
a783673b ILT |
464 | // A symbol defined in a section which we are not including must |
465 | // be treated as an undefined symbol. | |
466 | unsigned char symbuf[sym_size]; | |
467 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
468 | unsigned int st_shndx = psym->get_st_shndx(); | |
469 | if (st_shndx != elfcpp::SHN_UNDEF | |
470 | && st_shndx < elfcpp::SHN_LORESERVE | |
471 | && !object->is_section_included(st_shndx)) | |
472 | { | |
473 | memcpy(symbuf, p, sym_size); | |
474 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
475 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
476 | psym = &sym2; | |
477 | } | |
478 | ||
14bfc3f5 ILT |
479 | const char* name = sym_names + st_name; |
480 | ||
481 | // In an object file, an '@' in the name separates the symbol | |
482 | // name from the version name. If there are two '@' characters, | |
483 | // this is the default version. | |
484 | const char* ver = strchr(name, '@'); | |
485 | ||
486 | Symbol* res; | |
487 | if (ver == NULL) | |
488 | { | |
f0641a0b ILT |
489 | Stringpool::Key name_key; |
490 | name = this->namepool_.add(name, &name_key); | |
491 | res = this->add_from_object(object, name, name_key, NULL, 0, | |
492 | false, *psym); | |
14bfc3f5 ILT |
493 | } |
494 | else | |
495 | { | |
f0641a0b ILT |
496 | Stringpool::Key name_key; |
497 | name = this->namepool_.add(name, ver - name, &name_key); | |
498 | ||
14bfc3f5 ILT |
499 | bool def = false; |
500 | ++ver; | |
501 | if (*ver == '@') | |
502 | { | |
503 | def = true; | |
504 | ++ver; | |
505 | } | |
f0641a0b ILT |
506 | |
507 | Stringpool::Key ver_key; | |
508 | ver = this->namepool_.add(ver, &ver_key); | |
509 | ||
510 | res = this->add_from_object(object, name, name_key, ver, ver_key, | |
511 | def, *psym); | |
14bfc3f5 ILT |
512 | } |
513 | ||
514 | *sympointers++ = res; | |
14bfc3f5 ILT |
515 | } |
516 | } | |
517 | ||
ead1e424 ILT |
518 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
519 | // true, then only create the symbol if there is a reference to it. | |
520 | ||
521 | template<int size, bool big_endian> | |
522 | Sized_symbol<size>* | |
523 | Symbol_table::define_special_symbol(Target* target, const char* name, | |
593f47df ILT |
524 | bool only_if_ref |
525 | ACCEPT_SIZE_ENDIAN) | |
ead1e424 ILT |
526 | { |
527 | assert(this->size_ == size); | |
528 | ||
529 | Symbol* oldsym; | |
530 | Sized_symbol<size>* sym; | |
531 | ||
532 | if (only_if_ref) | |
533 | { | |
534 | oldsym = this->lookup(name, NULL); | |
f6ce93d6 | 535 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 ILT |
536 | return NULL; |
537 | sym = NULL; | |
538 | ||
539 | // Canonicalize NAME. | |
540 | name = oldsym->name(); | |
541 | } | |
542 | else | |
543 | { | |
544 | // Canonicalize NAME. | |
f0641a0b ILT |
545 | Stringpool::Key name_key; |
546 | name = this->namepool_.add(name, &name_key); | |
ead1e424 ILT |
547 | |
548 | Symbol* const snull = NULL; | |
f0641a0b | 549 | const Stringpool::Key ver_key = 0; |
ead1e424 | 550 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
f0641a0b | 551 | this->table_.insert(std::make_pair(std::make_pair(name_key, ver_key), |
ead1e424 ILT |
552 | snull)); |
553 | ||
554 | if (!ins.second) | |
555 | { | |
556 | // We already have a symbol table entry for NAME. | |
557 | oldsym = ins.first->second; | |
558 | assert(oldsym != NULL); | |
559 | sym = NULL; | |
560 | } | |
561 | else | |
562 | { | |
563 | // We haven't seen this symbol before. | |
564 | assert(ins.first->second == NULL); | |
565 | ||
566 | if (!target->has_make_symbol()) | |
567 | sym = new Sized_symbol<size>(); | |
568 | else | |
569 | { | |
570 | assert(target->get_size() == size); | |
571 | assert(target->is_big_endian() ? big_endian : !big_endian); | |
572 | typedef Sized_target<size, big_endian> My_target; | |
573 | My_target* sized_target = static_cast<My_target*>(target); | |
574 | sym = sized_target->make_symbol(); | |
575 | if (sym == NULL) | |
576 | return NULL; | |
577 | } | |
578 | ||
579 | ins.first->second = sym; | |
580 | oldsym = NULL; | |
581 | } | |
582 | } | |
583 | ||
584 | if (oldsym != NULL) | |
585 | { | |
586 | assert(sym == NULL); | |
587 | ||
593f47df ILT |
588 | sym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
589 | SELECT_SIZE(size)); | |
ead1e424 ILT |
590 | assert(sym->source() == Symbol::FROM_OBJECT); |
591 | const int old_shnum = sym->shnum(); | |
592 | if (old_shnum != elfcpp::SHN_UNDEF | |
593 | && old_shnum != elfcpp::SHN_COMMON | |
594 | && !sym->object()->is_dynamic()) | |
595 | { | |
596 | fprintf(stderr, "%s: linker defined: multiple definition of %s\n", | |
597 | program_name, name); | |
598 | // FIXME: Report old location. Record that we have seen an | |
599 | // error. | |
600 | return NULL; | |
601 | } | |
602 | ||
603 | // Our new definition is going to override the old reference. | |
604 | } | |
605 | ||
606 | return sym; | |
607 | } | |
608 | ||
609 | // Define a symbol based on an Output_data. | |
610 | ||
611 | void | |
612 | Symbol_table::define_in_output_data(Target* target, const char* name, | |
613 | Output_data* od, | |
614 | uint64_t value, uint64_t symsize, | |
615 | elfcpp::STT type, elfcpp::STB binding, | |
616 | elfcpp::STV visibility, | |
617 | unsigned char nonvis, | |
618 | bool offset_is_from_end, | |
619 | bool only_if_ref) | |
620 | { | |
621 | assert(target->get_size() == this->size_); | |
622 | if (this->size_ == 32) | |
623 | this->do_define_in_output_data<32>(target, name, od, value, symsize, | |
624 | type, binding, visibility, nonvis, | |
625 | offset_is_from_end, only_if_ref); | |
626 | else if (this->size_ == 64) | |
627 | this->do_define_in_output_data<64>(target, name, od, value, symsize, | |
628 | type, binding, visibility, nonvis, | |
629 | offset_is_from_end, only_if_ref); | |
630 | else | |
631 | abort(); | |
632 | } | |
633 | ||
634 | // Define a symbol in an Output_data, sized version. | |
635 | ||
636 | template<int size> | |
637 | void | |
638 | Symbol_table::do_define_in_output_data( | |
639 | Target* target, | |
640 | const char* name, | |
641 | Output_data* od, | |
642 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
643 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
644 | elfcpp::STT type, | |
645 | elfcpp::STB binding, | |
646 | elfcpp::STV visibility, | |
647 | unsigned char nonvis, | |
648 | bool offset_is_from_end, | |
649 | bool only_if_ref) | |
650 | { | |
651 | Sized_symbol<size>* sym; | |
652 | ||
653 | if (target->is_big_endian()) | |
593f47df ILT |
654 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( |
655 | target, name, only_if_ref | |
656 | SELECT_SIZE_ENDIAN(size, true)); | |
ead1e424 | 657 | else |
593f47df ILT |
658 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( |
659 | target, name, only_if_ref | |
660 | SELECT_SIZE_ENDIAN(size, false)); | |
ead1e424 ILT |
661 | |
662 | if (sym == NULL) | |
663 | return; | |
664 | ||
665 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, | |
666 | offset_is_from_end); | |
667 | } | |
668 | ||
669 | // Define a symbol based on an Output_segment. | |
670 | ||
671 | void | |
672 | Symbol_table::define_in_output_segment(Target* target, const char* name, | |
673 | Output_segment* os, | |
674 | uint64_t value, uint64_t symsize, | |
675 | elfcpp::STT type, elfcpp::STB binding, | |
676 | elfcpp::STV visibility, | |
677 | unsigned char nonvis, | |
678 | Symbol::Segment_offset_base offset_base, | |
679 | bool only_if_ref) | |
680 | { | |
681 | assert(target->get_size() == this->size_); | |
682 | if (this->size_ == 32) | |
683 | this->do_define_in_output_segment<32>(target, name, os, value, symsize, | |
684 | type, binding, visibility, nonvis, | |
685 | offset_base, only_if_ref); | |
686 | else if (this->size_ == 64) | |
687 | this->do_define_in_output_segment<64>(target, name, os, value, symsize, | |
688 | type, binding, visibility, nonvis, | |
689 | offset_base, only_if_ref); | |
690 | else | |
691 | abort(); | |
692 | } | |
693 | ||
694 | // Define a symbol in an Output_segment, sized version. | |
695 | ||
696 | template<int size> | |
697 | void | |
698 | Symbol_table::do_define_in_output_segment( | |
699 | Target* target, | |
700 | const char* name, | |
701 | Output_segment* os, | |
702 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
703 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
704 | elfcpp::STT type, | |
705 | elfcpp::STB binding, | |
706 | elfcpp::STV visibility, | |
707 | unsigned char nonvis, | |
708 | Symbol::Segment_offset_base offset_base, | |
709 | bool only_if_ref) | |
710 | { | |
711 | Sized_symbol<size>* sym; | |
712 | ||
713 | if (target->is_big_endian()) | |
593f47df ILT |
714 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( |
715 | target, name, only_if_ref | |
716 | SELECT_SIZE_ENDIAN(size, true)); | |
ead1e424 | 717 | else |
593f47df ILT |
718 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( |
719 | target, name, only_if_ref | |
720 | SELECT_SIZE_ENDIAN(size, false)); | |
ead1e424 ILT |
721 | |
722 | if (sym == NULL) | |
723 | return; | |
724 | ||
725 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, | |
726 | offset_base); | |
727 | } | |
728 | ||
729 | // Define a special symbol with a constant value. It is a multiple | |
730 | // definition error if this symbol is already defined. | |
731 | ||
732 | void | |
733 | Symbol_table::define_as_constant(Target* target, const char* name, | |
734 | uint64_t value, uint64_t symsize, | |
735 | elfcpp::STT type, elfcpp::STB binding, | |
736 | elfcpp::STV visibility, unsigned char nonvis, | |
737 | bool only_if_ref) | |
738 | { | |
739 | assert(target->get_size() == this->size_); | |
740 | if (this->size_ == 32) | |
741 | this->do_define_as_constant<32>(target, name, value, symsize, | |
742 | type, binding, visibility, nonvis, | |
743 | only_if_ref); | |
744 | else if (this->size_ == 64) | |
745 | this->do_define_as_constant<64>(target, name, value, symsize, | |
746 | type, binding, visibility, nonvis, | |
747 | only_if_ref); | |
748 | else | |
749 | abort(); | |
750 | } | |
751 | ||
752 | // Define a symbol as a constant, sized version. | |
753 | ||
754 | template<int size> | |
755 | void | |
756 | Symbol_table::do_define_as_constant( | |
757 | Target* target, | |
758 | const char* name, | |
759 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
760 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
761 | elfcpp::STT type, | |
762 | elfcpp::STB binding, | |
763 | elfcpp::STV visibility, | |
764 | unsigned char nonvis, | |
765 | bool only_if_ref) | |
766 | { | |
767 | Sized_symbol<size>* sym; | |
768 | ||
769 | if (target->is_big_endian()) | |
593f47df ILT |
770 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( |
771 | target, name, only_if_ref | |
772 | SELECT_SIZE_ENDIAN(size, true)); | |
ead1e424 | 773 | else |
593f47df ILT |
774 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( |
775 | target, name, only_if_ref | |
776 | SELECT_SIZE_ENDIAN(size, false)); | |
ead1e424 ILT |
777 | |
778 | if (sym == NULL) | |
779 | return; | |
780 | ||
781 | sym->init(name, value, symsize, type, binding, visibility, nonvis); | |
782 | } | |
783 | ||
784 | // Define a set of symbols in output sections. | |
785 | ||
786 | void | |
787 | Symbol_table::define_symbols(const Layout* layout, Target* target, int count, | |
788 | const Define_symbol_in_section* p) | |
789 | { | |
790 | for (int i = 0; i < count; ++i, ++p) | |
791 | { | |
792 | Output_section* os = layout->find_output_section(p->output_section); | |
793 | if (os != NULL) | |
794 | this->define_in_output_data(target, p->name, os, p->value, p->size, | |
795 | p->type, p->binding, p->visibility, | |
796 | p->nonvis, p->offset_is_from_end, | |
797 | p->only_if_ref); | |
798 | else | |
799 | this->define_as_constant(target, p->name, 0, p->size, p->type, | |
800 | p->binding, p->visibility, p->nonvis, | |
801 | p->only_if_ref); | |
802 | } | |
803 | } | |
804 | ||
805 | // Define a set of symbols in output segments. | |
806 | ||
807 | void | |
808 | Symbol_table::define_symbols(const Layout* layout, Target* target, int count, | |
809 | const Define_symbol_in_segment* p) | |
810 | { | |
811 | for (int i = 0; i < count; ++i, ++p) | |
812 | { | |
813 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
814 | p->segment_flags_set, | |
815 | p->segment_flags_clear); | |
816 | if (os != NULL) | |
817 | this->define_in_output_segment(target, p->name, os, p->value, p->size, | |
818 | p->type, p->binding, p->visibility, | |
819 | p->nonvis, p->offset_base, | |
820 | p->only_if_ref); | |
821 | else | |
822 | this->define_as_constant(target, p->name, 0, p->size, p->type, | |
823 | p->binding, p->visibility, p->nonvis, | |
824 | p->only_if_ref); | |
825 | } | |
826 | } | |
827 | ||
75f65a3e ILT |
828 | // Set the final values for all the symbols. Record the file offset |
829 | // OFF. Add their names to POOL. Return the new file offset. | |
54dc6425 | 830 | |
75f65a3e ILT |
831 | off_t |
832 | Symbol_table::finalize(off_t off, Stringpool* pool) | |
54dc6425 | 833 | { |
f6ce93d6 ILT |
834 | off_t ret; |
835 | ||
75f65a3e | 836 | if (this->size_ == 32) |
f6ce93d6 | 837 | ret = this->sized_finalize<32>(off, pool); |
61ba1cf9 | 838 | else if (this->size_ == 64) |
f6ce93d6 | 839 | ret = this->sized_finalize<64>(off, pool); |
61ba1cf9 ILT |
840 | else |
841 | abort(); | |
f6ce93d6 ILT |
842 | |
843 | // Now that we have the final symbol table, we can reliably note | |
844 | // which symbols should get warnings. | |
845 | this->warnings_.note_warnings(this); | |
846 | ||
847 | return ret; | |
75f65a3e ILT |
848 | } |
849 | ||
ead1e424 ILT |
850 | // Set the final value for all the symbols. This is called after |
851 | // Layout::finalize, so all the output sections have their final | |
852 | // address. | |
75f65a3e ILT |
853 | |
854 | template<int size> | |
855 | off_t | |
856 | Symbol_table::sized_finalize(off_t off, Stringpool* pool) | |
857 | { | |
ead1e424 | 858 | off = align_address(off, size >> 3); |
75f65a3e ILT |
859 | this->offset_ = off; |
860 | ||
861 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
862 | Symbol_table_type::iterator p = this->table_.begin(); | |
61ba1cf9 | 863 | size_t count = 0; |
75f65a3e | 864 | while (p != this->table_.end()) |
54dc6425 | 865 | { |
75f65a3e | 866 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 867 | |
75f65a3e ILT |
868 | // FIXME: Here we need to decide which symbols should go into |
869 | // the output file. | |
870 | ||
ead1e424 | 871 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 872 | |
ead1e424 | 873 | switch (sym->source()) |
75f65a3e | 874 | { |
ead1e424 ILT |
875 | case Symbol::FROM_OBJECT: |
876 | { | |
877 | unsigned int shnum = sym->shnum(); | |
878 | ||
879 | // FIXME: We need some target specific support here. | |
880 | if (shnum >= elfcpp::SHN_LORESERVE | |
881 | && shnum != elfcpp::SHN_ABS) | |
882 | { | |
883 | fprintf(stderr, _("%s: %s: unsupported symbol section 0x%x\n"), | |
884 | program_name, sym->name(), shnum); | |
885 | gold_exit(false); | |
886 | } | |
887 | ||
f6ce93d6 ILT |
888 | Object* symobj = sym->object(); |
889 | if (symobj->is_dynamic()) | |
890 | { | |
891 | value = 0; | |
892 | shnum = elfcpp::SHN_UNDEF; | |
893 | } | |
894 | else if (shnum == elfcpp::SHN_UNDEF) | |
ead1e424 ILT |
895 | value = 0; |
896 | else if (shnum == elfcpp::SHN_ABS) | |
897 | value = sym->value(); | |
898 | else | |
899 | { | |
f6ce93d6 | 900 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 901 | off_t secoff; |
f6ce93d6 | 902 | Output_section* os = relobj->output_section(shnum, &secoff); |
ead1e424 ILT |
903 | |
904 | if (os == NULL) | |
905 | { | |
906 | // We should be able to erase this symbol from the | |
907 | // symbol table, but at least with gcc 4.0.2 | |
908 | // std::unordered_map::erase doesn't appear to return | |
909 | // the new iterator. | |
910 | // p = this->table_.erase(p); | |
911 | ++p; | |
912 | continue; | |
913 | } | |
914 | ||
915 | value = sym->value() + os->address() + secoff; | |
916 | } | |
917 | } | |
918 | break; | |
919 | ||
920 | case Symbol::IN_OUTPUT_DATA: | |
921 | { | |
922 | Output_data* od = sym->output_data(); | |
923 | value = sym->value() + od->address(); | |
924 | if (sym->offset_is_from_end()) | |
925 | value += od->data_size(); | |
926 | } | |
927 | break; | |
928 | ||
929 | case Symbol::IN_OUTPUT_SEGMENT: | |
930 | { | |
931 | Output_segment* os = sym->output_segment(); | |
932 | value = sym->value() + os->vaddr(); | |
933 | switch (sym->offset_base()) | |
934 | { | |
935 | case Symbol::SEGMENT_START: | |
936 | break; | |
937 | case Symbol::SEGMENT_END: | |
938 | value += os->memsz(); | |
939 | break; | |
940 | case Symbol::SEGMENT_BSS: | |
941 | value += os->filesz(); | |
942 | break; | |
943 | default: | |
944 | abort(); | |
945 | } | |
946 | } | |
947 | break; | |
948 | ||
949 | case Symbol::CONSTANT: | |
950 | value = sym->value(); | |
951 | break; | |
952 | ||
953 | default: | |
954 | abort(); | |
54dc6425 | 955 | } |
ead1e424 ILT |
956 | |
957 | sym->set_value(value); | |
f0641a0b | 958 | pool->add(sym->name(), NULL); |
ead1e424 ILT |
959 | ++count; |
960 | off += sym_size; | |
961 | ++p; | |
54dc6425 | 962 | } |
75f65a3e | 963 | |
61ba1cf9 ILT |
964 | this->output_count_ = count; |
965 | ||
75f65a3e | 966 | return off; |
54dc6425 ILT |
967 | } |
968 | ||
61ba1cf9 ILT |
969 | // Write out the global symbols. |
970 | ||
971 | void | |
972 | Symbol_table::write_globals(const Target* target, const Stringpool* sympool, | |
973 | Output_file* of) const | |
974 | { | |
975 | if (this->size_ == 32) | |
976 | { | |
977 | if (target->is_big_endian()) | |
978 | this->sized_write_globals<32, true>(target, sympool, of); | |
979 | else | |
980 | this->sized_write_globals<32, false>(target, sympool, of); | |
981 | } | |
982 | else if (this->size_ == 64) | |
983 | { | |
984 | if (target->is_big_endian()) | |
985 | this->sized_write_globals<64, true>(target, sympool, of); | |
986 | else | |
987 | this->sized_write_globals<64, false>(target, sympool, of); | |
988 | } | |
989 | else | |
990 | abort(); | |
991 | } | |
992 | ||
993 | // Write out the global symbols. | |
994 | ||
995 | template<int size, bool big_endian> | |
996 | void | |
997 | Symbol_table::sized_write_globals(const Target*, | |
998 | const Stringpool* sympool, | |
999 | Output_file* of) const | |
1000 | { | |
1001 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1002 | unsigned char* psyms = of->get_output_view(this->offset_, | |
1003 | this->output_count_ * sym_size); | |
1004 | unsigned char* ps = psyms; | |
1005 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1006 | p != this->table_.end(); | |
1007 | ++p) | |
1008 | { | |
1009 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1010 | ||
ead1e424 ILT |
1011 | unsigned int shndx; |
1012 | switch (sym->source()) | |
1013 | { | |
1014 | case Symbol::FROM_OBJECT: | |
1015 | { | |
1016 | unsigned int shnum = sym->shnum(); | |
1017 | ||
1018 | // FIXME: We need some target specific support here. | |
1019 | if (shnum >= elfcpp::SHN_LORESERVE | |
1020 | && shnum != elfcpp::SHN_ABS) | |
1021 | { | |
1022 | fprintf(stderr, _("%s: %s: unsupported symbol section 0x%x\n"), | |
1023 | program_name, sym->name(), sym->shnum()); | |
1024 | gold_exit(false); | |
1025 | } | |
1026 | ||
f6ce93d6 ILT |
1027 | Object* symobj = sym->object(); |
1028 | if (symobj->is_dynamic()) | |
1029 | { | |
1030 | // FIXME. | |
1031 | shndx = elfcpp::SHN_UNDEF; | |
1032 | } | |
1033 | else if (shnum == elfcpp::SHN_UNDEF || shnum == elfcpp::SHN_ABS) | |
ead1e424 ILT |
1034 | shndx = shnum; |
1035 | else | |
1036 | { | |
f6ce93d6 | 1037 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 1038 | off_t secoff; |
f6ce93d6 | 1039 | Output_section* os = relobj->output_section(shnum, &secoff); |
ead1e424 ILT |
1040 | if (os == NULL) |
1041 | continue; | |
1042 | ||
1043 | shndx = os->out_shndx(); | |
1044 | } | |
1045 | } | |
1046 | break; | |
1047 | ||
1048 | case Symbol::IN_OUTPUT_DATA: | |
1049 | shndx = sym->output_data()->out_shndx(); | |
1050 | break; | |
1051 | ||
1052 | case Symbol::IN_OUTPUT_SEGMENT: | |
1053 | shndx = elfcpp::SHN_ABS; | |
1054 | break; | |
1055 | ||
1056 | case Symbol::CONSTANT: | |
1057 | shndx = elfcpp::SHN_ABS; | |
1058 | break; | |
1059 | ||
1060 | default: | |
1061 | abort(); | |
1062 | } | |
61ba1cf9 ILT |
1063 | |
1064 | elfcpp::Sym_write<size, big_endian> osym(ps); | |
1065 | osym.put_st_name(sympool->get_offset(sym->name())); | |
1066 | osym.put_st_value(sym->value()); | |
1067 | osym.put_st_size(sym->symsize()); | |
1068 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
ead1e424 ILT |
1069 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), |
1070 | sym->nonvis())); | |
1071 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1072 | |
1073 | ps += sym_size; | |
1074 | } | |
1075 | ||
1076 | of->write_output_view(this->offset_, this->output_count_ * sym_size, psyms); | |
1077 | } | |
1078 | ||
f6ce93d6 ILT |
1079 | // Warnings functions. |
1080 | ||
1081 | // Add a new warning. | |
1082 | ||
1083 | void | |
1084 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
1085 | unsigned int shndx) | |
1086 | { | |
1087 | name = symtab->canonicalize_name(name); | |
1088 | this->warnings_[name].set(obj, shndx); | |
1089 | } | |
1090 | ||
1091 | // Look through the warnings and mark the symbols for which we should | |
1092 | // warn. This is called during Layout::finalize when we know the | |
1093 | // sources for all the symbols. | |
1094 | ||
1095 | void | |
1096 | Warnings::note_warnings(Symbol_table* symtab) | |
1097 | { | |
1098 | for (Warning_table::iterator p = this->warnings_.begin(); | |
1099 | p != this->warnings_.end(); | |
1100 | ++p) | |
1101 | { | |
1102 | Symbol* sym = symtab->lookup(p->first, NULL); | |
1103 | if (sym != NULL | |
1104 | && sym->source() == Symbol::FROM_OBJECT | |
1105 | && sym->object() == p->second.object) | |
1106 | { | |
1107 | sym->set_has_warning(); | |
1108 | ||
1109 | // Read the section contents to get the warning text. It | |
1110 | // would be nicer if we only did this if we have to actually | |
1111 | // issue a warning. Unfortunately, warnings are issued as | |
1112 | // we relocate sections. That means that we can not lock | |
1113 | // the object then, as we might try to issue the same | |
1114 | // warning multiple times simultaneously. | |
645f8123 ILT |
1115 | { |
1116 | Task_locker_obj<Object> tl(*p->second.object); | |
1117 | const unsigned char* c; | |
1118 | off_t len; | |
1119 | c = p->second.object->section_contents(p->second.shndx, &len); | |
1120 | p->second.set_text(reinterpret_cast<const char*>(c), len); | |
1121 | } | |
f6ce93d6 ILT |
1122 | } |
1123 | } | |
1124 | } | |
1125 | ||
1126 | // Issue a warning. This is called when we see a relocation against a | |
1127 | // symbol for which has a warning. | |
1128 | ||
1129 | void | |
1130 | Warnings::issue_warning(Symbol* sym, const std::string& location) const | |
1131 | { | |
1132 | assert(sym->has_warning()); | |
1133 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); | |
1134 | assert(p != this->warnings_.end()); | |
1135 | fprintf(stderr, _("%s: %s: warning: %s\n"), program_name, location.c_str(), | |
1136 | p->second.text.c_str()); | |
1137 | } | |
1138 | ||
14bfc3f5 ILT |
1139 | // Instantiate the templates we need. We could use the configure |
1140 | // script to restrict this to only the ones needed for implemented | |
1141 | // targets. | |
1142 | ||
1143 | template | |
1144 | void | |
1145 | Symbol_table::add_from_object<32, true>( | |
f6ce93d6 ILT |
1146 | Relobj* object, |
1147 | const unsigned char* syms, | |
14bfc3f5 ILT |
1148 | size_t count, |
1149 | const char* sym_names, | |
1150 | size_t sym_name_size, | |
1151 | Symbol** sympointers); | |
1152 | ||
1153 | template | |
1154 | void | |
1155 | Symbol_table::add_from_object<32, false>( | |
f6ce93d6 ILT |
1156 | Relobj* object, |
1157 | const unsigned char* syms, | |
14bfc3f5 ILT |
1158 | size_t count, |
1159 | const char* sym_names, | |
1160 | size_t sym_name_size, | |
1161 | Symbol** sympointers); | |
1162 | ||
1163 | template | |
1164 | void | |
1165 | Symbol_table::add_from_object<64, true>( | |
f6ce93d6 ILT |
1166 | Relobj* object, |
1167 | const unsigned char* syms, | |
14bfc3f5 ILT |
1168 | size_t count, |
1169 | const char* sym_names, | |
1170 | size_t sym_name_size, | |
1171 | Symbol** sympointers); | |
1172 | ||
1173 | template | |
1174 | void | |
1175 | Symbol_table::add_from_object<64, false>( | |
f6ce93d6 ILT |
1176 | Relobj* object, |
1177 | const unsigned char* syms, | |
14bfc3f5 ILT |
1178 | size_t count, |
1179 | const char* sym_names, | |
1180 | size_t sym_name_size, | |
1181 | Symbol** sympointers); | |
1182 | ||
1183 | } // End namespace gold. |