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14bfc3f5 ILT |
1 | // symtab.cc -- the gold symbol table |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
4 | // Written by Ian Lance Taylor <iant@google.com>. | |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
14bfc3f5 ILT |
23 | #include "gold.h" |
24 | ||
14bfc3f5 ILT |
25 | #include <stdint.h> |
26 | #include <string> | |
27 | #include <utility> | |
28 | ||
29 | #include "object.h" | |
dbe717ef | 30 | #include "dynobj.h" |
75f65a3e | 31 | #include "output.h" |
61ba1cf9 | 32 | #include "target.h" |
645f8123 | 33 | #include "workqueue.h" |
14bfc3f5 ILT |
34 | #include "symtab.h" |
35 | ||
36 | namespace gold | |
37 | { | |
38 | ||
39 | // Class Symbol. | |
40 | ||
ead1e424 ILT |
41 | // Initialize fields in Symbol. This initializes everything except u_ |
42 | // and source_. | |
14bfc3f5 | 43 | |
14bfc3f5 | 44 | void |
ead1e424 ILT |
45 | Symbol::init_fields(const char* name, const char* version, |
46 | elfcpp::STT type, elfcpp::STB binding, | |
47 | elfcpp::STV visibility, unsigned char nonvis) | |
14bfc3f5 ILT |
48 | { |
49 | this->name_ = name; | |
50 | this->version_ = version; | |
c06b7b0b ILT |
51 | this->symtab_index_ = 0; |
52 | this->dynsym_index_ = 0; | |
ead1e424 | 53 | this->got_offset_ = 0; |
f4151f89 | 54 | this->plt_offset_ = 0; |
ead1e424 ILT |
55 | this->type_ = type; |
56 | this->binding_ = binding; | |
57 | this->visibility_ = visibility; | |
58 | this->nonvis_ = nonvis; | |
59 | this->is_target_special_ = false; | |
1564db8d ILT |
60 | this->is_def_ = false; |
61 | this->is_forwarder_ = false; | |
c06b7b0b | 62 | this->needs_dynsym_entry_ = false; |
008db82e | 63 | this->in_reg_ = false; |
ead1e424 ILT |
64 | this->in_dyn_ = false; |
65 | this->has_got_offset_ = false; | |
f4151f89 | 66 | this->has_plt_offset_ = false; |
f6ce93d6 | 67 | this->has_warning_ = false; |
ead1e424 ILT |
68 | } |
69 | ||
70 | // Initialize the fields in the base class Symbol for SYM in OBJECT. | |
71 | ||
72 | template<int size, bool big_endian> | |
73 | void | |
74 | Symbol::init_base(const char* name, const char* version, Object* object, | |
75 | const elfcpp::Sym<size, big_endian>& sym) | |
76 | { | |
77 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), | |
78 | sym.get_st_visibility(), sym.get_st_nonvis()); | |
79 | this->u_.from_object.object = object; | |
80 | // FIXME: Handle SHN_XINDEX. | |
16649710 | 81 | this->u_.from_object.shndx = sym.get_st_shndx(); |
ead1e424 | 82 | this->source_ = FROM_OBJECT; |
008db82e | 83 | this->in_reg_ = !object->is_dynamic(); |
1564db8d | 84 | this->in_dyn_ = object->is_dynamic(); |
14bfc3f5 ILT |
85 | } |
86 | ||
ead1e424 ILT |
87 | // Initialize the fields in the base class Symbol for a symbol defined |
88 | // in an Output_data. | |
89 | ||
90 | void | |
91 | Symbol::init_base(const char* name, Output_data* od, elfcpp::STT type, | |
92 | elfcpp::STB binding, elfcpp::STV visibility, | |
93 | unsigned char nonvis, bool offset_is_from_end) | |
94 | { | |
95 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
96 | this->u_.in_output_data.output_data = od; | |
97 | this->u_.in_output_data.offset_is_from_end = offset_is_from_end; | |
98 | this->source_ = IN_OUTPUT_DATA; | |
008db82e | 99 | this->in_reg_ = true; |
ead1e424 ILT |
100 | } |
101 | ||
102 | // Initialize the fields in the base class Symbol for a symbol defined | |
103 | // in an Output_segment. | |
104 | ||
105 | void | |
106 | Symbol::init_base(const char* name, Output_segment* os, elfcpp::STT type, | |
107 | elfcpp::STB binding, elfcpp::STV visibility, | |
108 | unsigned char nonvis, Segment_offset_base offset_base) | |
109 | { | |
110 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
111 | this->u_.in_output_segment.output_segment = os; | |
112 | this->u_.in_output_segment.offset_base = offset_base; | |
113 | this->source_ = IN_OUTPUT_SEGMENT; | |
008db82e | 114 | this->in_reg_ = true; |
ead1e424 ILT |
115 | } |
116 | ||
117 | // Initialize the fields in the base class Symbol for a symbol defined | |
118 | // as a constant. | |
119 | ||
120 | void | |
121 | Symbol::init_base(const char* name, elfcpp::STT type, | |
122 | elfcpp::STB binding, elfcpp::STV visibility, | |
123 | unsigned char nonvis) | |
124 | { | |
125 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
126 | this->source_ = CONSTANT; | |
008db82e | 127 | this->in_reg_ = true; |
ead1e424 ILT |
128 | } |
129 | ||
130 | // Initialize the fields in Sized_symbol for SYM in OBJECT. | |
14bfc3f5 ILT |
131 | |
132 | template<int size> | |
133 | template<bool big_endian> | |
134 | void | |
135 | Sized_symbol<size>::init(const char* name, const char* version, Object* object, | |
136 | const elfcpp::Sym<size, big_endian>& sym) | |
137 | { | |
138 | this->init_base(name, version, object, sym); | |
139 | this->value_ = sym.get_st_value(); | |
ead1e424 ILT |
140 | this->symsize_ = sym.get_st_size(); |
141 | } | |
142 | ||
143 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
144 | // Output_data. | |
145 | ||
146 | template<int size> | |
147 | void | |
148 | Sized_symbol<size>::init(const char* name, Output_data* od, | |
149 | Value_type value, Size_type symsize, | |
150 | elfcpp::STT type, elfcpp::STB binding, | |
151 | elfcpp::STV visibility, unsigned char nonvis, | |
152 | bool offset_is_from_end) | |
153 | { | |
154 | this->init_base(name, od, type, binding, visibility, nonvis, | |
155 | offset_is_from_end); | |
156 | this->value_ = value; | |
157 | this->symsize_ = symsize; | |
158 | } | |
159 | ||
160 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
161 | // Output_segment. | |
162 | ||
163 | template<int size> | |
164 | void | |
165 | Sized_symbol<size>::init(const char* name, Output_segment* os, | |
166 | Value_type value, Size_type symsize, | |
167 | elfcpp::STT type, elfcpp::STB binding, | |
168 | elfcpp::STV visibility, unsigned char nonvis, | |
169 | Segment_offset_base offset_base) | |
170 | { | |
171 | this->init_base(name, os, type, binding, visibility, nonvis, offset_base); | |
172 | this->value_ = value; | |
173 | this->symsize_ = symsize; | |
174 | } | |
175 | ||
176 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
177 | // constant. | |
178 | ||
179 | template<int size> | |
180 | void | |
181 | Sized_symbol<size>::init(const char* name, Value_type value, Size_type symsize, | |
182 | elfcpp::STT type, elfcpp::STB binding, | |
183 | elfcpp::STV visibility, unsigned char nonvis) | |
184 | { | |
185 | this->init_base(name, type, binding, visibility, nonvis); | |
186 | this->value_ = value; | |
187 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
188 | } |
189 | ||
190 | // Class Symbol_table. | |
191 | ||
192 | Symbol_table::Symbol_table() | |
ead1e424 | 193 | : size_(0), saw_undefined_(0), offset_(0), table_(), namepool_(), |
f6ce93d6 | 194 | forwarders_(), commons_(), warnings_() |
14bfc3f5 ILT |
195 | { |
196 | } | |
197 | ||
198 | Symbol_table::~Symbol_table() | |
199 | { | |
200 | } | |
201 | ||
202 | // The hash function. The key is always canonicalized, so we use a | |
203 | // simple combination of the pointers. | |
204 | ||
205 | size_t | |
206 | Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key& key) const | |
207 | { | |
f0641a0b | 208 | return key.first ^ key.second; |
14bfc3f5 ILT |
209 | } |
210 | ||
211 | // The symbol table key equality function. This is only called with | |
212 | // canonicalized name and version strings, so we can use pointer | |
213 | // comparison. | |
214 | ||
215 | bool | |
216 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, | |
217 | const Symbol_table_key& k2) const | |
218 | { | |
219 | return k1.first == k2.first && k1.second == k2.second; | |
220 | } | |
221 | ||
222 | // Make TO a symbol which forwards to FROM. | |
223 | ||
224 | void | |
225 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
226 | { | |
a3ad94ed ILT |
227 | gold_assert(from != to); |
228 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
229 | this->forwarders_[from] = to; |
230 | from->set_forwarder(); | |
231 | } | |
232 | ||
61ba1cf9 ILT |
233 | // Resolve the forwards from FROM, returning the real symbol. |
234 | ||
14bfc3f5 | 235 | Symbol* |
c06b7b0b | 236 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 237 | { |
a3ad94ed | 238 | gold_assert(from->is_forwarder()); |
c06b7b0b | 239 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 240 | this->forwarders_.find(from); |
a3ad94ed | 241 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
242 | return p->second; |
243 | } | |
244 | ||
61ba1cf9 ILT |
245 | // Look up a symbol by name. |
246 | ||
247 | Symbol* | |
248 | Symbol_table::lookup(const char* name, const char* version) const | |
249 | { | |
f0641a0b ILT |
250 | Stringpool::Key name_key; |
251 | name = this->namepool_.find(name, &name_key); | |
61ba1cf9 ILT |
252 | if (name == NULL) |
253 | return NULL; | |
f0641a0b ILT |
254 | |
255 | Stringpool::Key version_key = 0; | |
61ba1cf9 ILT |
256 | if (version != NULL) |
257 | { | |
f0641a0b | 258 | version = this->namepool_.find(version, &version_key); |
61ba1cf9 ILT |
259 | if (version == NULL) |
260 | return NULL; | |
261 | } | |
262 | ||
f0641a0b | 263 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
264 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
265 | if (p == this->table_.end()) | |
266 | return NULL; | |
267 | return p->second; | |
268 | } | |
269 | ||
14bfc3f5 ILT |
270 | // Resolve a Symbol with another Symbol. This is only used in the |
271 | // unusual case where there are references to both an unversioned | |
272 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
273 | // version is the default version. Because this is unusual, we do |
274 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 275 | |
1564db8d | 276 | template<int size, bool big_endian> |
14bfc3f5 | 277 | void |
14b31740 ILT |
278 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from, |
279 | const char* version ACCEPT_SIZE_ENDIAN) | |
14bfc3f5 | 280 | { |
1564db8d ILT |
281 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
282 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
283 | // We don't bother to set the st_name field. | |
284 | esym.put_st_value(from->value()); | |
285 | esym.put_st_size(from->symsize()); | |
286 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 287 | esym.put_st_other(from->visibility(), from->nonvis()); |
16649710 | 288 | esym.put_st_shndx(from->shndx()); |
14b31740 | 289 | Symbol_table::resolve(to, esym.sym(), from->object(), version); |
1ebd95fd ILT |
290 | if (from->in_reg()) |
291 | to->set_in_reg(); | |
292 | if (from->in_dyn()) | |
293 | to->set_in_dyn(); | |
14bfc3f5 ILT |
294 | } |
295 | ||
296 | // Add one symbol from OBJECT to the symbol table. NAME is symbol | |
297 | // name and VERSION is the version; both are canonicalized. DEF is | |
298 | // whether this is the default version. | |
299 | ||
300 | // If DEF is true, then this is the definition of a default version of | |
301 | // a symbol. That means that any lookup of NAME/NULL and any lookup | |
302 | // of NAME/VERSION should always return the same symbol. This is | |
303 | // obvious for references, but in particular we want to do this for | |
304 | // definitions: overriding NAME/NULL should also override | |
305 | // NAME/VERSION. If we don't do that, it would be very hard to | |
306 | // override functions in a shared library which uses versioning. | |
307 | ||
308 | // We implement this by simply making both entries in the hash table | |
309 | // point to the same Symbol structure. That is easy enough if this is | |
310 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
311 | // that we have seen both already, in which case they will both have | |
312 | // independent entries in the symbol table. We can't simply change | |
313 | // the symbol table entry, because we have pointers to the entries | |
314 | // attached to the object files. So we mark the entry attached to the | |
315 | // object file as a forwarder, and record it in the forwarders_ map. | |
316 | // Note that entries in the hash table will never be marked as | |
317 | // forwarders. | |
318 | ||
319 | template<int size, bool big_endian> | |
320 | Symbol* | |
f6ce93d6 | 321 | Symbol_table::add_from_object(Object* object, |
14bfc3f5 | 322 | const char *name, |
f0641a0b ILT |
323 | Stringpool::Key name_key, |
324 | const char *version, | |
325 | Stringpool::Key version_key, | |
326 | bool def, | |
14bfc3f5 ILT |
327 | const elfcpp::Sym<size, big_endian>& sym) |
328 | { | |
329 | Symbol* const snull = NULL; | |
330 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
331 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
332 | snull)); | |
14bfc3f5 ILT |
333 | |
334 | std::pair<typename Symbol_table_type::iterator, bool> insdef = | |
335 | std::make_pair(this->table_.end(), false); | |
336 | if (def) | |
337 | { | |
f0641a0b ILT |
338 | const Stringpool::Key vnull_key = 0; |
339 | insdef = this->table_.insert(std::make_pair(std::make_pair(name_key, | |
340 | vnull_key), | |
14bfc3f5 ILT |
341 | snull)); |
342 | } | |
343 | ||
344 | // ins.first: an iterator, which is a pointer to a pair. | |
345 | // ins.first->first: the key (a pair of name and version). | |
346 | // ins.first->second: the value (Symbol*). | |
347 | // ins.second: true if new entry was inserted, false if not. | |
348 | ||
1564db8d | 349 | Sized_symbol<size>* ret; |
ead1e424 ILT |
350 | bool was_undefined; |
351 | bool was_common; | |
14bfc3f5 ILT |
352 | if (!ins.second) |
353 | { | |
354 | // We already have an entry for NAME/VERSION. | |
593f47df ILT |
355 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) (ins.first->second |
356 | SELECT_SIZE(size)); | |
a3ad94ed | 357 | gold_assert(ret != NULL); |
ead1e424 ILT |
358 | |
359 | was_undefined = ret->is_undefined(); | |
360 | was_common = ret->is_common(); | |
361 | ||
14b31740 | 362 | Symbol_table::resolve(ret, sym, object, version); |
14bfc3f5 ILT |
363 | |
364 | if (def) | |
365 | { | |
366 | if (insdef.second) | |
367 | { | |
368 | // This is the first time we have seen NAME/NULL. Make | |
369 | // NAME/NULL point to NAME/VERSION. | |
370 | insdef.first->second = ret; | |
371 | } | |
dbe717ef | 372 | else if (insdef.first->second != ret) |
14bfc3f5 ILT |
373 | { |
374 | // This is the unfortunate case where we already have | |
375 | // entries for both NAME/VERSION and NAME/NULL. | |
274e99f9 | 376 | const Sized_symbol<size>* sym2; |
593f47df | 377 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
378 | insdef.first->second |
379 | SELECT_SIZE(size)); | |
593f47df | 380 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
14b31740 | 381 | ret, sym2, version SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
382 | this->make_forwarder(insdef.first->second, ret); |
383 | insdef.first->second = ret; | |
384 | } | |
385 | } | |
386 | } | |
387 | else | |
388 | { | |
389 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 390 | gold_assert(ins.first->second == NULL); |
ead1e424 ILT |
391 | |
392 | was_undefined = false; | |
393 | was_common = false; | |
394 | ||
14bfc3f5 ILT |
395 | if (def && !insdef.second) |
396 | { | |
14b31740 ILT |
397 | // We already have an entry for NAME/NULL. If we override |
398 | // it, then change it to NAME/VERSION. | |
593f47df ILT |
399 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
400 | insdef.first->second | |
401 | SELECT_SIZE(size)); | |
14b31740 | 402 | Symbol_table::resolve(ret, sym, object, version); |
14bfc3f5 ILT |
403 | ins.first->second = ret; |
404 | } | |
405 | else | |
406 | { | |
f6ce93d6 ILT |
407 | Sized_target<size, big_endian>* target = |
408 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
409 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
410 | if (!target->has_make_symbol()) |
411 | ret = new Sized_symbol<size>(); | |
412 | else | |
14bfc3f5 | 413 | { |
1564db8d ILT |
414 | ret = target->make_symbol(); |
415 | if (ret == NULL) | |
14bfc3f5 ILT |
416 | { |
417 | // This means that we don't want a symbol table | |
418 | // entry after all. | |
419 | if (!def) | |
420 | this->table_.erase(ins.first); | |
421 | else | |
422 | { | |
423 | this->table_.erase(insdef.first); | |
424 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
425 | this->table_.erase(std::make_pair(name_key, |
426 | version_key)); | |
14bfc3f5 ILT |
427 | } |
428 | return NULL; | |
429 | } | |
430 | } | |
14bfc3f5 | 431 | |
1564db8d ILT |
432 | ret->init(name, version, object, sym); |
433 | ||
14bfc3f5 ILT |
434 | ins.first->second = ret; |
435 | if (def) | |
436 | { | |
437 | // This is the first time we have seen NAME/NULL. Point | |
438 | // it at the new entry for NAME/VERSION. | |
a3ad94ed | 439 | gold_assert(insdef.second); |
14bfc3f5 ILT |
440 | insdef.first->second = ret; |
441 | } | |
442 | } | |
443 | } | |
444 | ||
ead1e424 ILT |
445 | // Record every time we see a new undefined symbol, to speed up |
446 | // archive groups. | |
447 | if (!was_undefined && ret->is_undefined()) | |
448 | ++this->saw_undefined_; | |
449 | ||
450 | // Keep track of common symbols, to speed up common symbol | |
451 | // allocation. | |
452 | if (!was_common && ret->is_common()) | |
453 | this->commons_.push_back(ret); | |
454 | ||
14bfc3f5 ILT |
455 | return ret; |
456 | } | |
457 | ||
f6ce93d6 | 458 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
459 | |
460 | template<int size, bool big_endian> | |
461 | void | |
dbe717ef ILT |
462 | Symbol_table::add_from_relobj( |
463 | Sized_relobj<size, big_endian>* relobj, | |
f6ce93d6 | 464 | const unsigned char* syms, |
14bfc3f5 ILT |
465 | size_t count, |
466 | const char* sym_names, | |
467 | size_t sym_name_size, | |
468 | Symbol** sympointers) | |
469 | { | |
470 | // We take the size from the first object we see. | |
471 | if (this->get_size() == 0) | |
472 | this->set_size(size); | |
473 | ||
dbe717ef | 474 | if (size != this->get_size() || size != relobj->target()->get_size()) |
14bfc3f5 ILT |
475 | { |
476 | fprintf(stderr, _("%s: %s: mixing 32-bit and 64-bit ELF objects\n"), | |
dbe717ef | 477 | program_name, relobj->name().c_str()); |
14bfc3f5 ILT |
478 | gold_exit(false); |
479 | } | |
480 | ||
a783673b ILT |
481 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
482 | ||
f6ce93d6 | 483 | const unsigned char* p = syms; |
a783673b | 484 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
485 | { |
486 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 487 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 488 | |
a783673b | 489 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
490 | if (st_name >= sym_name_size) |
491 | { | |
54dc6425 ILT |
492 | fprintf(stderr, |
493 | _("%s: %s: bad global symbol name offset %u at %lu\n"), | |
dbe717ef | 494 | program_name, relobj->name().c_str(), st_name, |
14bfc3f5 ILT |
495 | static_cast<unsigned long>(i)); |
496 | gold_exit(false); | |
497 | } | |
498 | ||
dbe717ef ILT |
499 | const char* name = sym_names + st_name; |
500 | ||
a783673b ILT |
501 | // A symbol defined in a section which we are not including must |
502 | // be treated as an undefined symbol. | |
503 | unsigned char symbuf[sym_size]; | |
504 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
505 | unsigned int st_shndx = psym->get_st_shndx(); | |
506 | if (st_shndx != elfcpp::SHN_UNDEF | |
507 | && st_shndx < elfcpp::SHN_LORESERVE | |
dbe717ef | 508 | && !relobj->is_section_included(st_shndx)) |
a783673b ILT |
509 | { |
510 | memcpy(symbuf, p, sym_size); | |
511 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
512 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
513 | psym = &sym2; | |
514 | } | |
515 | ||
14bfc3f5 ILT |
516 | // In an object file, an '@' in the name separates the symbol |
517 | // name from the version name. If there are two '@' characters, | |
518 | // this is the default version. | |
519 | const char* ver = strchr(name, '@'); | |
520 | ||
521 | Symbol* res; | |
522 | if (ver == NULL) | |
523 | { | |
f0641a0b ILT |
524 | Stringpool::Key name_key; |
525 | name = this->namepool_.add(name, &name_key); | |
dbe717ef | 526 | res = this->add_from_object(relobj, name, name_key, NULL, 0, |
f0641a0b | 527 | false, *psym); |
14bfc3f5 ILT |
528 | } |
529 | else | |
530 | { | |
f0641a0b ILT |
531 | Stringpool::Key name_key; |
532 | name = this->namepool_.add(name, ver - name, &name_key); | |
533 | ||
14bfc3f5 ILT |
534 | bool def = false; |
535 | ++ver; | |
536 | if (*ver == '@') | |
537 | { | |
538 | def = true; | |
539 | ++ver; | |
540 | } | |
f0641a0b ILT |
541 | |
542 | Stringpool::Key ver_key; | |
543 | ver = this->namepool_.add(ver, &ver_key); | |
544 | ||
dbe717ef | 545 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
f0641a0b | 546 | def, *psym); |
14bfc3f5 ILT |
547 | } |
548 | ||
549 | *sympointers++ = res; | |
14bfc3f5 ILT |
550 | } |
551 | } | |
552 | ||
dbe717ef ILT |
553 | // Add all the symbols in a dynamic object to the hash table. |
554 | ||
555 | template<int size, bool big_endian> | |
556 | void | |
557 | Symbol_table::add_from_dynobj( | |
558 | Sized_dynobj<size, big_endian>* dynobj, | |
559 | const unsigned char* syms, | |
560 | size_t count, | |
561 | const char* sym_names, | |
562 | size_t sym_name_size, | |
563 | const unsigned char* versym, | |
564 | size_t versym_size, | |
565 | const std::vector<const char*>* version_map) | |
566 | { | |
567 | // We take the size from the first object we see. | |
568 | if (this->get_size() == 0) | |
569 | this->set_size(size); | |
570 | ||
571 | if (size != this->get_size() || size != dynobj->target()->get_size()) | |
572 | { | |
573 | fprintf(stderr, _("%s: %s: mixing 32-bit and 64-bit ELF objects\n"), | |
574 | program_name, dynobj->name().c_str()); | |
575 | gold_exit(false); | |
576 | } | |
577 | ||
578 | if (versym != NULL && versym_size / 2 < count) | |
579 | { | |
580 | fprintf(stderr, _("%s: %s: too few symbol versions\n"), | |
581 | program_name, dynobj->name().c_str()); | |
582 | gold_exit(false); | |
583 | } | |
584 | ||
585 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
586 | ||
587 | const unsigned char* p = syms; | |
588 | const unsigned char* vs = versym; | |
589 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
590 | { | |
591 | elfcpp::Sym<size, big_endian> sym(p); | |
592 | ||
593 | // Ignore symbols with local binding. | |
594 | if (sym.get_st_bind() == elfcpp::STB_LOCAL) | |
595 | continue; | |
596 | ||
597 | unsigned int st_name = sym.get_st_name(); | |
598 | if (st_name >= sym_name_size) | |
599 | { | |
600 | fprintf(stderr, _("%s: %s: bad symbol name offset %u at %lu\n"), | |
601 | program_name, dynobj->name().c_str(), st_name, | |
602 | static_cast<unsigned long>(i)); | |
603 | gold_exit(false); | |
604 | } | |
605 | ||
606 | const char* name = sym_names + st_name; | |
607 | ||
608 | if (versym == NULL) | |
609 | { | |
610 | Stringpool::Key name_key; | |
611 | name = this->namepool_.add(name, &name_key); | |
612 | this->add_from_object(dynobj, name, name_key, NULL, 0, | |
613 | false, sym); | |
614 | continue; | |
615 | } | |
616 | ||
617 | // Read the version information. | |
618 | ||
619 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); | |
620 | ||
621 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; | |
622 | v &= elfcpp::VERSYM_VERSION; | |
623 | ||
64707334 ILT |
624 | // The Sun documentation says that V can be VER_NDX_LOCAL, or |
625 | // VER_NDX_GLOBAL, or a version index. The meaning of | |
626 | // VER_NDX_LOCAL is defined as "Symbol has local scope." The | |
627 | // old GNU linker will happily generate VER_NDX_LOCAL for an | |
628 | // undefined symbol. I don't know what the Sun linker will | |
629 | // generate. | |
630 | ||
631 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) | |
632 | && sym.get_st_shndx() != elfcpp::SHN_UNDEF) | |
dbe717ef ILT |
633 | { |
634 | // This symbol should not be visible outside the object. | |
635 | continue; | |
636 | } | |
637 | ||
638 | // At this point we are definitely going to add this symbol. | |
639 | Stringpool::Key name_key; | |
640 | name = this->namepool_.add(name, &name_key); | |
641 | ||
64707334 ILT |
642 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
643 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
dbe717ef ILT |
644 | { |
645 | // This symbol does not have a version. | |
646 | this->add_from_object(dynobj, name, name_key, NULL, 0, false, sym); | |
647 | continue; | |
648 | } | |
649 | ||
650 | if (v >= version_map->size()) | |
651 | { | |
652 | fprintf(stderr, | |
653 | _("%s: %s: versym for symbol %zu out of range: %u\n"), | |
654 | program_name, dynobj->name().c_str(), i, v); | |
655 | gold_exit(false); | |
656 | } | |
657 | ||
658 | const char* version = (*version_map)[v]; | |
659 | if (version == NULL) | |
660 | { | |
661 | fprintf(stderr, _("%s: %s: versym for symbol %zu has no name: %u\n"), | |
662 | program_name, dynobj->name().c_str(), i, v); | |
663 | gold_exit(false); | |
664 | } | |
665 | ||
666 | Stringpool::Key version_key; | |
667 | version = this->namepool_.add(version, &version_key); | |
668 | ||
669 | // If this is an absolute symbol, and the version name and | |
670 | // symbol name are the same, then this is the version definition | |
671 | // symbol. These symbols exist to support using -u to pull in | |
672 | // particular versions. We do not want to record a version for | |
673 | // them. | |
674 | if (sym.get_st_shndx() == elfcpp::SHN_ABS && name_key == version_key) | |
675 | { | |
676 | this->add_from_object(dynobj, name, name_key, NULL, 0, false, sym); | |
677 | continue; | |
678 | } | |
679 | ||
680 | const bool def = !hidden && sym.get_st_shndx() != elfcpp::SHN_UNDEF; | |
681 | ||
682 | this->add_from_object(dynobj, name, name_key, version, version_key, | |
683 | def, sym); | |
684 | } | |
685 | } | |
686 | ||
ead1e424 ILT |
687 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
688 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 689 | // If this does not return NULL, it sets *POLDSYM to the existing |
306d9ef0 | 690 | // symbol if there is one. This canonicalizes *PNAME and *PVERSION. |
ead1e424 ILT |
691 | |
692 | template<int size, bool big_endian> | |
693 | Sized_symbol<size>* | |
306d9ef0 ILT |
694 | Symbol_table::define_special_symbol(const Target* target, const char** pname, |
695 | const char** pversion, bool only_if_ref, | |
86f2e683 | 696 | Sized_symbol<size>** poldsym |
593f47df | 697 | ACCEPT_SIZE_ENDIAN) |
ead1e424 | 698 | { |
a3ad94ed | 699 | gold_assert(this->size_ == size); |
ead1e424 ILT |
700 | |
701 | Symbol* oldsym; | |
702 | Sized_symbol<size>* sym; | |
86f2e683 ILT |
703 | bool add_to_table = false; |
704 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
ead1e424 ILT |
705 | |
706 | if (only_if_ref) | |
707 | { | |
306d9ef0 | 708 | oldsym = this->lookup(*pname, *pversion); |
f6ce93d6 | 709 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 710 | return NULL; |
306d9ef0 ILT |
711 | |
712 | *pname = oldsym->name(); | |
713 | *pversion = oldsym->version(); | |
ead1e424 ILT |
714 | } |
715 | else | |
716 | { | |
14b31740 | 717 | // Canonicalize NAME and VERSION. |
f0641a0b | 718 | Stringpool::Key name_key; |
306d9ef0 | 719 | *pname = this->namepool_.add(*pname, &name_key); |
ead1e424 | 720 | |
14b31740 | 721 | Stringpool::Key version_key = 0; |
306d9ef0 ILT |
722 | if (*pversion != NULL) |
723 | *pversion = this->namepool_.add(*pversion, &version_key); | |
14b31740 | 724 | |
ead1e424 | 725 | Symbol* const snull = NULL; |
ead1e424 | 726 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
727 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
728 | version_key), | |
ead1e424 ILT |
729 | snull)); |
730 | ||
731 | if (!ins.second) | |
732 | { | |
14b31740 | 733 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 734 | oldsym = ins.first->second; |
a3ad94ed | 735 | gold_assert(oldsym != NULL); |
ead1e424 ILT |
736 | } |
737 | else | |
738 | { | |
739 | // We haven't seen this symbol before. | |
a3ad94ed | 740 | gold_assert(ins.first->second == NULL); |
86f2e683 ILT |
741 | add_to_table = true; |
742 | add_loc = ins.first; | |
ead1e424 ILT |
743 | oldsym = NULL; |
744 | } | |
745 | } | |
746 | ||
86f2e683 ILT |
747 | if (!target->has_make_symbol()) |
748 | sym = new Sized_symbol<size>(); | |
749 | else | |
ead1e424 | 750 | { |
86f2e683 ILT |
751 | gold_assert(target->get_size() == size); |
752 | gold_assert(target->is_big_endian() ? big_endian : !big_endian); | |
753 | typedef Sized_target<size, big_endian> My_target; | |
754 | const My_target* sized_target = | |
755 | static_cast<const My_target*>(target); | |
756 | sym = sized_target->make_symbol(); | |
757 | if (sym == NULL) | |
758 | return NULL; | |
759 | } | |
ead1e424 | 760 | |
86f2e683 ILT |
761 | if (add_to_table) |
762 | add_loc->second = sym; | |
763 | else | |
764 | gold_assert(oldsym != NULL); | |
ead1e424 | 765 | |
86f2e683 ILT |
766 | *poldsym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
767 | SELECT_SIZE(size)); | |
ead1e424 ILT |
768 | |
769 | return sym; | |
770 | } | |
771 | ||
772 | // Define a symbol based on an Output_data. | |
773 | ||
14b31740 ILT |
774 | Symbol* |
775 | Symbol_table::define_in_output_data(const Target* target, const char* name, | |
776 | const char* version, Output_data* od, | |
ead1e424 ILT |
777 | uint64_t value, uint64_t symsize, |
778 | elfcpp::STT type, elfcpp::STB binding, | |
779 | elfcpp::STV visibility, | |
780 | unsigned char nonvis, | |
781 | bool offset_is_from_end, | |
782 | bool only_if_ref) | |
783 | { | |
a3ad94ed | 784 | gold_assert(target->get_size() == this->size_); |
ead1e424 | 785 | if (this->size_ == 32) |
86f2e683 ILT |
786 | { |
787 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
788 | return this->do_define_in_output_data<32>(target, name, version, od, | |
789 | value, symsize, type, binding, | |
790 | visibility, nonvis, | |
791 | offset_is_from_end, | |
792 | only_if_ref); | |
793 | #else | |
794 | gold_unreachable(); | |
795 | #endif | |
796 | } | |
ead1e424 | 797 | else if (this->size_ == 64) |
86f2e683 ILT |
798 | { |
799 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
800 | return this->do_define_in_output_data<64>(target, name, version, od, | |
801 | value, symsize, type, binding, | |
802 | visibility, nonvis, | |
803 | offset_is_from_end, | |
804 | only_if_ref); | |
805 | #else | |
806 | gold_unreachable(); | |
807 | #endif | |
808 | } | |
ead1e424 | 809 | else |
a3ad94ed | 810 | gold_unreachable(); |
ead1e424 ILT |
811 | } |
812 | ||
813 | // Define a symbol in an Output_data, sized version. | |
814 | ||
815 | template<int size> | |
14b31740 | 816 | Sized_symbol<size>* |
ead1e424 | 817 | Symbol_table::do_define_in_output_data( |
14b31740 | 818 | const Target* target, |
ead1e424 | 819 | const char* name, |
14b31740 | 820 | const char* version, |
ead1e424 ILT |
821 | Output_data* od, |
822 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
823 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
824 | elfcpp::STT type, | |
825 | elfcpp::STB binding, | |
826 | elfcpp::STV visibility, | |
827 | unsigned char nonvis, | |
828 | bool offset_is_from_end, | |
829 | bool only_if_ref) | |
830 | { | |
831 | Sized_symbol<size>* sym; | |
86f2e683 | 832 | Sized_symbol<size>* oldsym; |
ead1e424 ILT |
833 | |
834 | if (target->is_big_endian()) | |
193a53d9 ILT |
835 | { |
836 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
837 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
306d9ef0 | 838 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
839 | SELECT_SIZE_ENDIAN(size, true)); |
840 | #else | |
841 | gold_unreachable(); | |
842 | #endif | |
843 | } | |
ead1e424 | 844 | else |
193a53d9 ILT |
845 | { |
846 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
847 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
306d9ef0 | 848 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
849 | SELECT_SIZE_ENDIAN(size, false)); |
850 | #else | |
851 | gold_unreachable(); | |
852 | #endif | |
853 | } | |
ead1e424 ILT |
854 | |
855 | if (sym == NULL) | |
14b31740 | 856 | return NULL; |
ead1e424 | 857 | |
d4f5281b | 858 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
859 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, |
860 | offset_is_from_end); | |
14b31740 | 861 | |
86f2e683 ILT |
862 | if (oldsym != NULL |
863 | && Symbol_table::should_override_with_special(oldsym)) | |
864 | oldsym->override_with_special(sym); | |
865 | ||
14b31740 | 866 | return sym; |
ead1e424 ILT |
867 | } |
868 | ||
869 | // Define a symbol based on an Output_segment. | |
870 | ||
14b31740 ILT |
871 | Symbol* |
872 | Symbol_table::define_in_output_segment(const Target* target, const char* name, | |
873 | const char* version, Output_segment* os, | |
ead1e424 ILT |
874 | uint64_t value, uint64_t symsize, |
875 | elfcpp::STT type, elfcpp::STB binding, | |
876 | elfcpp::STV visibility, | |
877 | unsigned char nonvis, | |
878 | Symbol::Segment_offset_base offset_base, | |
879 | bool only_if_ref) | |
880 | { | |
a3ad94ed | 881 | gold_assert(target->get_size() == this->size_); |
ead1e424 | 882 | if (this->size_ == 32) |
86f2e683 ILT |
883 | { |
884 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
885 | return this->do_define_in_output_segment<32>(target, name, version, os, | |
886 | value, symsize, type, | |
887 | binding, visibility, nonvis, | |
888 | offset_base, only_if_ref); | |
889 | #else | |
890 | gold_unreachable(); | |
891 | #endif | |
892 | } | |
ead1e424 | 893 | else if (this->size_ == 64) |
86f2e683 ILT |
894 | { |
895 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
896 | return this->do_define_in_output_segment<64>(target, name, version, os, | |
897 | value, symsize, type, | |
898 | binding, visibility, nonvis, | |
899 | offset_base, only_if_ref); | |
900 | #else | |
901 | gold_unreachable(); | |
902 | #endif | |
903 | } | |
ead1e424 | 904 | else |
a3ad94ed | 905 | gold_unreachable(); |
ead1e424 ILT |
906 | } |
907 | ||
908 | // Define a symbol in an Output_segment, sized version. | |
909 | ||
910 | template<int size> | |
14b31740 | 911 | Sized_symbol<size>* |
ead1e424 | 912 | Symbol_table::do_define_in_output_segment( |
14b31740 | 913 | const Target* target, |
ead1e424 | 914 | const char* name, |
14b31740 | 915 | const char* version, |
ead1e424 ILT |
916 | Output_segment* os, |
917 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
918 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
919 | elfcpp::STT type, | |
920 | elfcpp::STB binding, | |
921 | elfcpp::STV visibility, | |
922 | unsigned char nonvis, | |
923 | Symbol::Segment_offset_base offset_base, | |
924 | bool only_if_ref) | |
925 | { | |
926 | Sized_symbol<size>* sym; | |
86f2e683 | 927 | Sized_symbol<size>* oldsym; |
ead1e424 ILT |
928 | |
929 | if (target->is_big_endian()) | |
593f47df | 930 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( |
306d9ef0 | 931 | target, &name, &version, only_if_ref, &oldsym |
593f47df | 932 | SELECT_SIZE_ENDIAN(size, true)); |
ead1e424 | 933 | else |
593f47df | 934 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( |
306d9ef0 | 935 | target, &name, &version, only_if_ref, &oldsym |
593f47df | 936 | SELECT_SIZE_ENDIAN(size, false)); |
ead1e424 ILT |
937 | |
938 | if (sym == NULL) | |
14b31740 | 939 | return NULL; |
ead1e424 | 940 | |
d4f5281b | 941 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
942 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, |
943 | offset_base); | |
14b31740 | 944 | |
86f2e683 ILT |
945 | if (oldsym != NULL |
946 | && Symbol_table::should_override_with_special(oldsym)) | |
947 | oldsym->override_with_special(sym); | |
948 | ||
14b31740 | 949 | return sym; |
ead1e424 ILT |
950 | } |
951 | ||
952 | // Define a special symbol with a constant value. It is a multiple | |
953 | // definition error if this symbol is already defined. | |
954 | ||
14b31740 ILT |
955 | Symbol* |
956 | Symbol_table::define_as_constant(const Target* target, const char* name, | |
957 | const char* version, uint64_t value, | |
958 | uint64_t symsize, elfcpp::STT type, | |
959 | elfcpp::STB binding, elfcpp::STV visibility, | |
960 | unsigned char nonvis, bool only_if_ref) | |
ead1e424 | 961 | { |
a3ad94ed | 962 | gold_assert(target->get_size() == this->size_); |
ead1e424 | 963 | if (this->size_ == 32) |
86f2e683 ILT |
964 | { |
965 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
966 | return this->do_define_as_constant<32>(target, name, version, value, | |
967 | symsize, type, binding, | |
968 | visibility, nonvis, only_if_ref); | |
969 | #else | |
970 | gold_unreachable(); | |
971 | #endif | |
972 | } | |
ead1e424 | 973 | else if (this->size_ == 64) |
86f2e683 ILT |
974 | { |
975 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
976 | return this->do_define_as_constant<64>(target, name, version, value, | |
977 | symsize, type, binding, | |
978 | visibility, nonvis, only_if_ref); | |
979 | #else | |
980 | gold_unreachable(); | |
981 | #endif | |
982 | } | |
ead1e424 | 983 | else |
a3ad94ed | 984 | gold_unreachable(); |
ead1e424 ILT |
985 | } |
986 | ||
987 | // Define a symbol as a constant, sized version. | |
988 | ||
989 | template<int size> | |
14b31740 | 990 | Sized_symbol<size>* |
ead1e424 | 991 | Symbol_table::do_define_as_constant( |
14b31740 | 992 | const Target* target, |
ead1e424 | 993 | const char* name, |
14b31740 | 994 | const char* version, |
ead1e424 ILT |
995 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
996 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
997 | elfcpp::STT type, | |
998 | elfcpp::STB binding, | |
999 | elfcpp::STV visibility, | |
1000 | unsigned char nonvis, | |
1001 | bool only_if_ref) | |
1002 | { | |
1003 | Sized_symbol<size>* sym; | |
86f2e683 | 1004 | Sized_symbol<size>* oldsym; |
ead1e424 ILT |
1005 | |
1006 | if (target->is_big_endian()) | |
593f47df | 1007 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( |
306d9ef0 | 1008 | target, &name, &version, only_if_ref, &oldsym |
593f47df | 1009 | SELECT_SIZE_ENDIAN(size, true)); |
ead1e424 | 1010 | else |
593f47df | 1011 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( |
306d9ef0 | 1012 | target, &name, &version, only_if_ref, &oldsym |
593f47df | 1013 | SELECT_SIZE_ENDIAN(size, false)); |
ead1e424 ILT |
1014 | |
1015 | if (sym == NULL) | |
14b31740 | 1016 | return NULL; |
ead1e424 | 1017 | |
d4f5281b | 1018 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 | 1019 | sym->init(name, value, symsize, type, binding, visibility, nonvis); |
14b31740 | 1020 | |
86f2e683 ILT |
1021 | if (oldsym != NULL |
1022 | && Symbol_table::should_override_with_special(oldsym)) | |
1023 | oldsym->override_with_special(sym); | |
1024 | ||
14b31740 | 1025 | return sym; |
ead1e424 ILT |
1026 | } |
1027 | ||
1028 | // Define a set of symbols in output sections. | |
1029 | ||
1030 | void | |
14b31740 ILT |
1031 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1032 | int count, const Define_symbol_in_section* p) | |
ead1e424 ILT |
1033 | { |
1034 | for (int i = 0; i < count; ++i, ++p) | |
1035 | { | |
1036 | Output_section* os = layout->find_output_section(p->output_section); | |
1037 | if (os != NULL) | |
14b31740 ILT |
1038 | this->define_in_output_data(target, p->name, NULL, os, p->value, |
1039 | p->size, p->type, p->binding, | |
1040 | p->visibility, p->nonvis, | |
1041 | p->offset_is_from_end, p->only_if_ref); | |
ead1e424 | 1042 | else |
14b31740 | 1043 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1044 | p->binding, p->visibility, p->nonvis, |
1045 | p->only_if_ref); | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | // Define a set of symbols in output segments. | |
1050 | ||
1051 | void | |
14b31740 ILT |
1052 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1053 | int count, const Define_symbol_in_segment* p) | |
ead1e424 ILT |
1054 | { |
1055 | for (int i = 0; i < count; ++i, ++p) | |
1056 | { | |
1057 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
1058 | p->segment_flags_set, | |
1059 | p->segment_flags_clear); | |
1060 | if (os != NULL) | |
14b31740 ILT |
1061 | this->define_in_output_segment(target, p->name, NULL, os, p->value, |
1062 | p->size, p->type, p->binding, | |
1063 | p->visibility, p->nonvis, | |
1064 | p->offset_base, p->only_if_ref); | |
ead1e424 | 1065 | else |
14b31740 | 1066 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1067 | p->binding, p->visibility, p->nonvis, |
1068 | p->only_if_ref); | |
1069 | } | |
1070 | } | |
1071 | ||
a3ad94ed ILT |
1072 | // Set the dynamic symbol indexes. INDEX is the index of the first |
1073 | // global dynamic symbol. Pointers to the symbols are stored into the | |
1074 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
1075 | // updated dynamic symbol index. | |
1076 | ||
1077 | unsigned int | |
14b31740 ILT |
1078 | Symbol_table::set_dynsym_indexes(const General_options* options, |
1079 | const Target* target, | |
1080 | unsigned int index, | |
a3ad94ed | 1081 | std::vector<Symbol*>* syms, |
14b31740 ILT |
1082 | Stringpool* dynpool, |
1083 | Versions* versions) | |
a3ad94ed ILT |
1084 | { |
1085 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
1086 | p != this->table_.end(); | |
1087 | ++p) | |
1088 | { | |
1089 | Symbol* sym = p->second; | |
16649710 ILT |
1090 | |
1091 | // Note that SYM may already have a dynamic symbol index, since | |
1092 | // some symbols appear more than once in the symbol table, with | |
1093 | // and without a version. | |
1094 | ||
a6badf5a ILT |
1095 | if (!sym->needs_dynsym_entry() |
1096 | && (!options->export_dynamic() | |
1097 | || !sym->in_reg() | |
1098 | || !sym->is_externally_visible())) | |
16649710 ILT |
1099 | sym->set_dynsym_index(-1U); |
1100 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
1101 | { |
1102 | sym->set_dynsym_index(index); | |
1103 | ++index; | |
1104 | syms->push_back(sym); | |
1105 | dynpool->add(sym->name(), NULL); | |
14b31740 ILT |
1106 | |
1107 | // Record any version information. | |
1108 | if (sym->version() != NULL) | |
1109 | versions->record_version(options, dynpool, sym); | |
a3ad94ed ILT |
1110 | } |
1111 | } | |
1112 | ||
14b31740 ILT |
1113 | // Finish up the versions. In some cases this may add new dynamic |
1114 | // symbols. | |
1115 | index = versions->finalize(target, this, index, syms); | |
1116 | ||
a3ad94ed ILT |
1117 | return index; |
1118 | } | |
1119 | ||
c06b7b0b ILT |
1120 | // Set the final values for all the symbols. The index of the first |
1121 | // global symbol in the output file is INDEX. Record the file offset | |
75f65a3e | 1122 | // OFF. Add their names to POOL. Return the new file offset. |
54dc6425 | 1123 | |
75f65a3e | 1124 | off_t |
16649710 ILT |
1125 | Symbol_table::finalize(unsigned int index, off_t off, off_t dynoff, |
1126 | size_t dyn_global_index, size_t dyncount, | |
1127 | Stringpool* pool) | |
54dc6425 | 1128 | { |
f6ce93d6 ILT |
1129 | off_t ret; |
1130 | ||
a3ad94ed | 1131 | gold_assert(index != 0); |
c06b7b0b ILT |
1132 | this->first_global_index_ = index; |
1133 | ||
16649710 ILT |
1134 | this->dynamic_offset_ = dynoff; |
1135 | this->first_dynamic_global_index_ = dyn_global_index; | |
1136 | this->dynamic_count_ = dyncount; | |
1137 | ||
75f65a3e | 1138 | if (this->size_ == 32) |
c06b7b0b | 1139 | ret = this->sized_finalize<32>(index, off, pool); |
61ba1cf9 | 1140 | else if (this->size_ == 64) |
c06b7b0b | 1141 | ret = this->sized_finalize<64>(index, off, pool); |
61ba1cf9 | 1142 | else |
a3ad94ed | 1143 | gold_unreachable(); |
f6ce93d6 ILT |
1144 | |
1145 | // Now that we have the final symbol table, we can reliably note | |
1146 | // which symbols should get warnings. | |
1147 | this->warnings_.note_warnings(this); | |
1148 | ||
1149 | return ret; | |
75f65a3e ILT |
1150 | } |
1151 | ||
ead1e424 ILT |
1152 | // Set the final value for all the symbols. This is called after |
1153 | // Layout::finalize, so all the output sections have their final | |
1154 | // address. | |
75f65a3e ILT |
1155 | |
1156 | template<int size> | |
1157 | off_t | |
c06b7b0b | 1158 | Symbol_table::sized_finalize(unsigned index, off_t off, Stringpool* pool) |
75f65a3e | 1159 | { |
ead1e424 | 1160 | off = align_address(off, size >> 3); |
75f65a3e ILT |
1161 | this->offset_ = off; |
1162 | ||
c06b7b0b ILT |
1163 | size_t orig_index = index; |
1164 | ||
75f65a3e | 1165 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1166 | for (Symbol_table_type::iterator p = this->table_.begin(); |
1167 | p != this->table_.end(); | |
1168 | ++p) | |
54dc6425 | 1169 | { |
75f65a3e | 1170 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 1171 | |
75f65a3e | 1172 | // FIXME: Here we need to decide which symbols should go into |
a3ad94ed ILT |
1173 | // the output file, based on --strip. |
1174 | ||
1175 | // The default version of a symbol may appear twice in the | |
1176 | // symbol table. We only need to finalize it once. | |
1177 | if (sym->has_symtab_index()) | |
1178 | continue; | |
75f65a3e | 1179 | |
008db82e ILT |
1180 | if (!sym->in_reg()) |
1181 | { | |
1182 | gold_assert(!sym->has_symtab_index()); | |
1183 | sym->set_symtab_index(-1U); | |
1184 | gold_assert(sym->dynsym_index() == -1U); | |
1185 | continue; | |
1186 | } | |
1187 | ||
ead1e424 | 1188 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 1189 | |
ead1e424 | 1190 | switch (sym->source()) |
75f65a3e | 1191 | { |
ead1e424 ILT |
1192 | case Symbol::FROM_OBJECT: |
1193 | { | |
16649710 | 1194 | unsigned int shndx = sym->shndx(); |
ead1e424 ILT |
1195 | |
1196 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1197 | if (shndx >= elfcpp::SHN_LORESERVE |
1198 | && shndx != elfcpp::SHN_ABS) | |
ead1e424 ILT |
1199 | { |
1200 | fprintf(stderr, _("%s: %s: unsupported symbol section 0x%x\n"), | |
16649710 | 1201 | program_name, sym->name(), shndx); |
ead1e424 ILT |
1202 | gold_exit(false); |
1203 | } | |
1204 | ||
f6ce93d6 ILT |
1205 | Object* symobj = sym->object(); |
1206 | if (symobj->is_dynamic()) | |
1207 | { | |
1208 | value = 0; | |
16649710 | 1209 | shndx = elfcpp::SHN_UNDEF; |
f6ce93d6 | 1210 | } |
16649710 | 1211 | else if (shndx == elfcpp::SHN_UNDEF) |
ead1e424 | 1212 | value = 0; |
16649710 | 1213 | else if (shndx == elfcpp::SHN_ABS) |
ead1e424 ILT |
1214 | value = sym->value(); |
1215 | else | |
1216 | { | |
f6ce93d6 | 1217 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 1218 | off_t secoff; |
16649710 | 1219 | Output_section* os = relobj->output_section(shndx, &secoff); |
ead1e424 ILT |
1220 | |
1221 | if (os == NULL) | |
1222 | { | |
c06b7b0b | 1223 | sym->set_symtab_index(-1U); |
16649710 | 1224 | gold_assert(sym->dynsym_index() == -1U); |
ead1e424 ILT |
1225 | continue; |
1226 | } | |
1227 | ||
1228 | value = sym->value() + os->address() + secoff; | |
1229 | } | |
1230 | } | |
1231 | break; | |
1232 | ||
1233 | case Symbol::IN_OUTPUT_DATA: | |
1234 | { | |
1235 | Output_data* od = sym->output_data(); | |
1236 | value = sym->value() + od->address(); | |
1237 | if (sym->offset_is_from_end()) | |
1238 | value += od->data_size(); | |
1239 | } | |
1240 | break; | |
1241 | ||
1242 | case Symbol::IN_OUTPUT_SEGMENT: | |
1243 | { | |
1244 | Output_segment* os = sym->output_segment(); | |
1245 | value = sym->value() + os->vaddr(); | |
1246 | switch (sym->offset_base()) | |
1247 | { | |
1248 | case Symbol::SEGMENT_START: | |
1249 | break; | |
1250 | case Symbol::SEGMENT_END: | |
1251 | value += os->memsz(); | |
1252 | break; | |
1253 | case Symbol::SEGMENT_BSS: | |
1254 | value += os->filesz(); | |
1255 | break; | |
1256 | default: | |
a3ad94ed | 1257 | gold_unreachable(); |
ead1e424 ILT |
1258 | } |
1259 | } | |
1260 | break; | |
1261 | ||
1262 | case Symbol::CONSTANT: | |
1263 | value = sym->value(); | |
1264 | break; | |
1265 | ||
1266 | default: | |
a3ad94ed | 1267 | gold_unreachable(); |
54dc6425 | 1268 | } |
ead1e424 ILT |
1269 | |
1270 | sym->set_value(value); | |
c06b7b0b | 1271 | sym->set_symtab_index(index); |
f0641a0b | 1272 | pool->add(sym->name(), NULL); |
c06b7b0b | 1273 | ++index; |
ead1e424 | 1274 | off += sym_size; |
54dc6425 | 1275 | } |
75f65a3e | 1276 | |
c06b7b0b | 1277 | this->output_count_ = index - orig_index; |
61ba1cf9 | 1278 | |
75f65a3e | 1279 | return off; |
54dc6425 ILT |
1280 | } |
1281 | ||
61ba1cf9 ILT |
1282 | // Write out the global symbols. |
1283 | ||
1284 | void | |
1285 | Symbol_table::write_globals(const Target* target, const Stringpool* sympool, | |
16649710 | 1286 | const Stringpool* dynpool, Output_file* of) const |
61ba1cf9 ILT |
1287 | { |
1288 | if (this->size_ == 32) | |
1289 | { | |
1290 | if (target->is_big_endian()) | |
16649710 | 1291 | this->sized_write_globals<32, true>(target, sympool, dynpool, of); |
61ba1cf9 | 1292 | else |
16649710 | 1293 | this->sized_write_globals<32, false>(target, sympool, dynpool, of); |
61ba1cf9 ILT |
1294 | } |
1295 | else if (this->size_ == 64) | |
1296 | { | |
1297 | if (target->is_big_endian()) | |
16649710 | 1298 | this->sized_write_globals<64, true>(target, sympool, dynpool, of); |
61ba1cf9 | 1299 | else |
16649710 | 1300 | this->sized_write_globals<64, false>(target, sympool, dynpool, of); |
61ba1cf9 ILT |
1301 | } |
1302 | else | |
a3ad94ed | 1303 | gold_unreachable(); |
61ba1cf9 ILT |
1304 | } |
1305 | ||
1306 | // Write out the global symbols. | |
1307 | ||
1308 | template<int size, bool big_endian> | |
1309 | void | |
ab5c9e90 | 1310 | Symbol_table::sized_write_globals(const Target* target, |
61ba1cf9 | 1311 | const Stringpool* sympool, |
16649710 | 1312 | const Stringpool* dynpool, |
61ba1cf9 ILT |
1313 | Output_file* of) const |
1314 | { | |
1315 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
c06b7b0b ILT |
1316 | unsigned int index = this->first_global_index_; |
1317 | const off_t oview_size = this->output_count_ * sym_size; | |
16649710 ILT |
1318 | unsigned char* const psyms = of->get_output_view(this->offset_, oview_size); |
1319 | ||
1320 | unsigned int dynamic_count = this->dynamic_count_; | |
1321 | off_t dynamic_size = dynamic_count * sym_size; | |
1322 | unsigned int first_dynamic_global_index = this->first_dynamic_global_index_; | |
1323 | unsigned char* dynamic_view; | |
1324 | if (this->dynamic_offset_ == 0) | |
1325 | dynamic_view = NULL; | |
1326 | else | |
1327 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 1328 | |
61ba1cf9 ILT |
1329 | unsigned char* ps = psyms; |
1330 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1331 | p != this->table_.end(); | |
1332 | ++p) | |
1333 | { | |
1334 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1335 | ||
a3ad94ed | 1336 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
1337 | unsigned int dynsym_index; |
1338 | if (dynamic_view == NULL) | |
1339 | dynsym_index = -1U; | |
1340 | else | |
1341 | dynsym_index = sym->dynsym_index(); | |
1342 | ||
1343 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
1344 | { |
1345 | // This symbol is not included in the output file. | |
1346 | continue; | |
1347 | } | |
16649710 ILT |
1348 | |
1349 | if (sym_index == index) | |
1350 | ++index; | |
1351 | else if (sym_index != -1U) | |
a3ad94ed ILT |
1352 | { |
1353 | // We have already seen this symbol, because it has a | |
1354 | // default version. | |
1355 | gold_assert(sym_index < index); | |
16649710 ILT |
1356 | if (dynsym_index == -1U) |
1357 | continue; | |
1358 | sym_index = -1U; | |
a3ad94ed | 1359 | } |
c06b7b0b | 1360 | |
ead1e424 | 1361 | unsigned int shndx; |
ab5c9e90 | 1362 | typename elfcpp::Elf_types<32>::Elf_Addr value = sym->value(); |
ead1e424 ILT |
1363 | switch (sym->source()) |
1364 | { | |
1365 | case Symbol::FROM_OBJECT: | |
1366 | { | |
16649710 | 1367 | unsigned int in_shndx = sym->shndx(); |
ead1e424 ILT |
1368 | |
1369 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1370 | if (in_shndx >= elfcpp::SHN_LORESERVE |
1371 | && in_shndx != elfcpp::SHN_ABS) | |
ead1e424 ILT |
1372 | { |
1373 | fprintf(stderr, _("%s: %s: unsupported symbol section 0x%x\n"), | |
16649710 | 1374 | program_name, sym->name(), in_shndx); |
ead1e424 ILT |
1375 | gold_exit(false); |
1376 | } | |
1377 | ||
f6ce93d6 ILT |
1378 | Object* symobj = sym->object(); |
1379 | if (symobj->is_dynamic()) | |
1380 | { | |
ab5c9e90 ILT |
1381 | if (sym->needs_dynsym_value()) |
1382 | value = target->dynsym_value(sym); | |
f6ce93d6 ILT |
1383 | shndx = elfcpp::SHN_UNDEF; |
1384 | } | |
16649710 ILT |
1385 | else if (in_shndx == elfcpp::SHN_UNDEF |
1386 | || in_shndx == elfcpp::SHN_ABS) | |
1387 | shndx = in_shndx; | |
ead1e424 ILT |
1388 | else |
1389 | { | |
f6ce93d6 | 1390 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 1391 | off_t secoff; |
16649710 | 1392 | Output_section* os = relobj->output_section(in_shndx, &secoff); |
a3ad94ed | 1393 | gold_assert(os != NULL); |
ead1e424 ILT |
1394 | shndx = os->out_shndx(); |
1395 | } | |
1396 | } | |
1397 | break; | |
1398 | ||
1399 | case Symbol::IN_OUTPUT_DATA: | |
1400 | shndx = sym->output_data()->out_shndx(); | |
1401 | break; | |
1402 | ||
1403 | case Symbol::IN_OUTPUT_SEGMENT: | |
1404 | shndx = elfcpp::SHN_ABS; | |
1405 | break; | |
1406 | ||
1407 | case Symbol::CONSTANT: | |
1408 | shndx = elfcpp::SHN_ABS; | |
1409 | break; | |
1410 | ||
1411 | default: | |
a3ad94ed | 1412 | gold_unreachable(); |
ead1e424 | 1413 | } |
61ba1cf9 | 1414 | |
16649710 ILT |
1415 | if (sym_index != -1U) |
1416 | { | |
6a469986 | 1417 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1418 | sym, sym->value(), shndx, sympool, ps |
6a469986 | 1419 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 ILT |
1420 | ps += sym_size; |
1421 | } | |
61ba1cf9 | 1422 | |
16649710 ILT |
1423 | if (dynsym_index != -1U) |
1424 | { | |
1425 | dynsym_index -= first_dynamic_global_index; | |
1426 | gold_assert(dynsym_index < dynamic_count); | |
1427 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
6a469986 | 1428 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1429 | sym, value, shndx, dynpool, pd |
6a469986 | 1430 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 | 1431 | } |
61ba1cf9 ILT |
1432 | } |
1433 | ||
a3ad94ed | 1434 | gold_assert(ps - psyms == oview_size); |
c06b7b0b ILT |
1435 | |
1436 | of->write_output_view(this->offset_, oview_size, psyms); | |
16649710 ILT |
1437 | if (dynamic_view != NULL) |
1438 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
1439 | } | |
1440 | ||
1441 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
1442 | // strtab holding the name. | |
1443 | ||
1444 | template<int size, bool big_endian> | |
1445 | void | |
ab5c9e90 ILT |
1446 | Symbol_table::sized_write_symbol( |
1447 | Sized_symbol<size>* sym, | |
1448 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1449 | unsigned int shndx, | |
1450 | const Stringpool* pool, | |
1451 | unsigned char* p | |
1452 | ACCEPT_SIZE_ENDIAN) const | |
16649710 ILT |
1453 | { |
1454 | elfcpp::Sym_write<size, big_endian> osym(p); | |
1455 | osym.put_st_name(pool->get_offset(sym->name())); | |
ab5c9e90 | 1456 | osym.put_st_value(value); |
16649710 ILT |
1457 | osym.put_st_size(sym->symsize()); |
1458 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
1459 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); | |
1460 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1461 | } |
1462 | ||
a3ad94ed ILT |
1463 | // Write out a section symbol. Return the update offset. |
1464 | ||
1465 | void | |
1466 | Symbol_table::write_section_symbol(const Target* target, | |
1467 | const Output_section *os, | |
1468 | Output_file* of, | |
1469 | off_t offset) const | |
1470 | { | |
1471 | if (this->size_ == 32) | |
1472 | { | |
1473 | if (target->is_big_endian()) | |
1474 | this->sized_write_section_symbol<32, true>(os, of, offset); | |
1475 | else | |
1476 | this->sized_write_section_symbol<32, false>(os, of, offset); | |
1477 | } | |
1478 | else if (this->size_ == 64) | |
1479 | { | |
1480 | if (target->is_big_endian()) | |
1481 | this->sized_write_section_symbol<64, true>(os, of, offset); | |
1482 | else | |
1483 | this->sized_write_section_symbol<64, false>(os, of, offset); | |
1484 | } | |
1485 | else | |
1486 | gold_unreachable(); | |
1487 | } | |
1488 | ||
1489 | // Write out a section symbol, specialized for size and endianness. | |
1490 | ||
1491 | template<int size, bool big_endian> | |
1492 | void | |
1493 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
1494 | Output_file* of, | |
1495 | off_t offset) const | |
1496 | { | |
1497 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1498 | ||
1499 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
1500 | ||
1501 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
1502 | osym.put_st_name(0); | |
1503 | osym.put_st_value(os->address()); | |
1504 | osym.put_st_size(0); | |
1505 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
1506 | elfcpp::STT_SECTION)); | |
1507 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
1508 | osym.put_st_shndx(os->out_shndx()); | |
1509 | ||
1510 | of->write_output_view(offset, sym_size, pov); | |
1511 | } | |
1512 | ||
f6ce93d6 ILT |
1513 | // Warnings functions. |
1514 | ||
1515 | // Add a new warning. | |
1516 | ||
1517 | void | |
1518 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
1519 | unsigned int shndx) | |
1520 | { | |
1521 | name = symtab->canonicalize_name(name); | |
1522 | this->warnings_[name].set(obj, shndx); | |
1523 | } | |
1524 | ||
1525 | // Look through the warnings and mark the symbols for which we should | |
1526 | // warn. This is called during Layout::finalize when we know the | |
1527 | // sources for all the symbols. | |
1528 | ||
1529 | void | |
1530 | Warnings::note_warnings(Symbol_table* symtab) | |
1531 | { | |
1532 | for (Warning_table::iterator p = this->warnings_.begin(); | |
1533 | p != this->warnings_.end(); | |
1534 | ++p) | |
1535 | { | |
1536 | Symbol* sym = symtab->lookup(p->first, NULL); | |
1537 | if (sym != NULL | |
1538 | && sym->source() == Symbol::FROM_OBJECT | |
1539 | && sym->object() == p->second.object) | |
1540 | { | |
1541 | sym->set_has_warning(); | |
1542 | ||
1543 | // Read the section contents to get the warning text. It | |
1544 | // would be nicer if we only did this if we have to actually | |
1545 | // issue a warning. Unfortunately, warnings are issued as | |
1546 | // we relocate sections. That means that we can not lock | |
1547 | // the object then, as we might try to issue the same | |
1548 | // warning multiple times simultaneously. | |
645f8123 ILT |
1549 | { |
1550 | Task_locker_obj<Object> tl(*p->second.object); | |
1551 | const unsigned char* c; | |
1552 | off_t len; | |
9eb9fa57 ILT |
1553 | c = p->second.object->section_contents(p->second.shndx, &len, |
1554 | false); | |
645f8123 ILT |
1555 | p->second.set_text(reinterpret_cast<const char*>(c), len); |
1556 | } | |
f6ce93d6 ILT |
1557 | } |
1558 | } | |
1559 | } | |
1560 | ||
1561 | // Issue a warning. This is called when we see a relocation against a | |
1562 | // symbol for which has a warning. | |
1563 | ||
1564 | void | |
c06b7b0b | 1565 | Warnings::issue_warning(const Symbol* sym, const std::string& location) const |
f6ce93d6 | 1566 | { |
a3ad94ed | 1567 | gold_assert(sym->has_warning()); |
f6ce93d6 | 1568 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 1569 | gold_assert(p != this->warnings_.end()); |
f6ce93d6 ILT |
1570 | fprintf(stderr, _("%s: %s: warning: %s\n"), program_name, location.c_str(), |
1571 | p->second.text.c_str()); | |
1572 | } | |
1573 | ||
14bfc3f5 ILT |
1574 | // Instantiate the templates we need. We could use the configure |
1575 | // script to restrict this to only the ones needed for implemented | |
1576 | // targets. | |
1577 | ||
193a53d9 | 1578 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
1579 | template |
1580 | void | |
193a53d9 ILT |
1581 | Symbol_table::add_from_relobj<32, false>( |
1582 | Sized_relobj<32, false>* relobj, | |
f6ce93d6 | 1583 | const unsigned char* syms, |
14bfc3f5 ILT |
1584 | size_t count, |
1585 | const char* sym_names, | |
1586 | size_t sym_name_size, | |
1587 | Symbol** sympointers); | |
193a53d9 | 1588 | #endif |
14bfc3f5 | 1589 | |
193a53d9 | 1590 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
1591 | template |
1592 | void | |
193a53d9 ILT |
1593 | Symbol_table::add_from_relobj<32, true>( |
1594 | Sized_relobj<32, true>* relobj, | |
f6ce93d6 | 1595 | const unsigned char* syms, |
14bfc3f5 ILT |
1596 | size_t count, |
1597 | const char* sym_names, | |
1598 | size_t sym_name_size, | |
1599 | Symbol** sympointers); | |
193a53d9 | 1600 | #endif |
14bfc3f5 | 1601 | |
193a53d9 | 1602 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
1603 | template |
1604 | void | |
193a53d9 ILT |
1605 | Symbol_table::add_from_relobj<64, false>( |
1606 | Sized_relobj<64, false>* relobj, | |
f6ce93d6 | 1607 | const unsigned char* syms, |
14bfc3f5 ILT |
1608 | size_t count, |
1609 | const char* sym_names, | |
1610 | size_t sym_name_size, | |
1611 | Symbol** sympointers); | |
193a53d9 | 1612 | #endif |
14bfc3f5 | 1613 | |
193a53d9 | 1614 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
1615 | template |
1616 | void | |
193a53d9 ILT |
1617 | Symbol_table::add_from_relobj<64, true>( |
1618 | Sized_relobj<64, true>* relobj, | |
f6ce93d6 | 1619 | const unsigned char* syms, |
14bfc3f5 ILT |
1620 | size_t count, |
1621 | const char* sym_names, | |
1622 | size_t sym_name_size, | |
1623 | Symbol** sympointers); | |
193a53d9 | 1624 | #endif |
14bfc3f5 | 1625 | |
193a53d9 | 1626 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
1627 | template |
1628 | void | |
193a53d9 ILT |
1629 | Symbol_table::add_from_dynobj<32, false>( |
1630 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
1631 | const unsigned char* syms, |
1632 | size_t count, | |
1633 | const char* sym_names, | |
1634 | size_t sym_name_size, | |
1635 | const unsigned char* versym, | |
1636 | size_t versym_size, | |
1637 | const std::vector<const char*>* version_map); | |
193a53d9 | 1638 | #endif |
dbe717ef | 1639 | |
193a53d9 | 1640 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
1641 | template |
1642 | void | |
193a53d9 ILT |
1643 | Symbol_table::add_from_dynobj<32, true>( |
1644 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
1645 | const unsigned char* syms, |
1646 | size_t count, | |
1647 | const char* sym_names, | |
1648 | size_t sym_name_size, | |
1649 | const unsigned char* versym, | |
1650 | size_t versym_size, | |
1651 | const std::vector<const char*>* version_map); | |
193a53d9 | 1652 | #endif |
dbe717ef | 1653 | |
193a53d9 | 1654 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
1655 | template |
1656 | void | |
193a53d9 ILT |
1657 | Symbol_table::add_from_dynobj<64, false>( |
1658 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
1659 | const unsigned char* syms, |
1660 | size_t count, | |
1661 | const char* sym_names, | |
1662 | size_t sym_name_size, | |
1663 | const unsigned char* versym, | |
1664 | size_t versym_size, | |
1665 | const std::vector<const char*>* version_map); | |
193a53d9 | 1666 | #endif |
dbe717ef | 1667 | |
193a53d9 | 1668 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
1669 | template |
1670 | void | |
193a53d9 ILT |
1671 | Symbol_table::add_from_dynobj<64, true>( |
1672 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
1673 | const unsigned char* syms, |
1674 | size_t count, | |
1675 | const char* sym_names, | |
1676 | size_t sym_name_size, | |
1677 | const unsigned char* versym, | |
1678 | size_t versym_size, | |
1679 | const std::vector<const char*>* version_map); | |
193a53d9 | 1680 | #endif |
dbe717ef | 1681 | |
14bfc3f5 | 1682 | } // End namespace gold. |