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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 | 25 | #include <stdint.h> |
70e654ba | 26 | #include <set> |
14bfc3f5 ILT |
27 | #include <string> |
28 | #include <utility> | |
29 | ||
30 | #include "object.h" | |
70e654ba | 31 | #include "dwarf_reader.h" |
dbe717ef | 32 | #include "dynobj.h" |
75f65a3e | 33 | #include "output.h" |
61ba1cf9 | 34 | #include "target.h" |
645f8123 | 35 | #include "workqueue.h" |
14bfc3f5 ILT |
36 | #include "symtab.h" |
37 | ||
38 | namespace gold | |
39 | { | |
40 | ||
41 | // Class Symbol. | |
42 | ||
ead1e424 ILT |
43 | // Initialize fields in Symbol. This initializes everything except u_ |
44 | // and source_. | |
14bfc3f5 | 45 | |
14bfc3f5 | 46 | void |
ead1e424 ILT |
47 | Symbol::init_fields(const char* name, const char* version, |
48 | elfcpp::STT type, elfcpp::STB binding, | |
49 | elfcpp::STV visibility, unsigned char nonvis) | |
14bfc3f5 ILT |
50 | { |
51 | this->name_ = name; | |
52 | this->version_ = version; | |
c06b7b0b ILT |
53 | this->symtab_index_ = 0; |
54 | this->dynsym_index_ = 0; | |
ead1e424 | 55 | this->got_offset_ = 0; |
f4151f89 | 56 | this->plt_offset_ = 0; |
ead1e424 ILT |
57 | this->type_ = type; |
58 | this->binding_ = binding; | |
59 | this->visibility_ = visibility; | |
60 | this->nonvis_ = nonvis; | |
61 | this->is_target_special_ = false; | |
1564db8d ILT |
62 | this->is_def_ = false; |
63 | this->is_forwarder_ = false; | |
aeddab66 | 64 | this->has_alias_ = false; |
c06b7b0b | 65 | this->needs_dynsym_entry_ = false; |
008db82e | 66 | this->in_reg_ = false; |
ead1e424 ILT |
67 | this->in_dyn_ = false; |
68 | this->has_got_offset_ = false; | |
f4151f89 | 69 | this->has_plt_offset_ = false; |
f6ce93d6 | 70 | this->has_warning_ = false; |
46fe1623 | 71 | this->is_copied_from_dynobj_ = false; |
d61c6bd4 | 72 | this->needs_value_in_got_ = false; |
ead1e424 ILT |
73 | } |
74 | ||
75 | // Initialize the fields in the base class Symbol for SYM in OBJECT. | |
76 | ||
77 | template<int size, bool big_endian> | |
78 | void | |
79 | Symbol::init_base(const char* name, const char* version, Object* object, | |
80 | const elfcpp::Sym<size, big_endian>& sym) | |
81 | { | |
82 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), | |
83 | sym.get_st_visibility(), sym.get_st_nonvis()); | |
84 | this->u_.from_object.object = object; | |
85 | // FIXME: Handle SHN_XINDEX. | |
16649710 | 86 | this->u_.from_object.shndx = sym.get_st_shndx(); |
ead1e424 | 87 | this->source_ = FROM_OBJECT; |
008db82e | 88 | this->in_reg_ = !object->is_dynamic(); |
1564db8d | 89 | this->in_dyn_ = object->is_dynamic(); |
14bfc3f5 ILT |
90 | } |
91 | ||
ead1e424 ILT |
92 | // Initialize the fields in the base class Symbol for a symbol defined |
93 | // in an Output_data. | |
94 | ||
95 | void | |
96 | Symbol::init_base(const char* name, Output_data* od, elfcpp::STT type, | |
97 | elfcpp::STB binding, elfcpp::STV visibility, | |
98 | unsigned char nonvis, bool offset_is_from_end) | |
99 | { | |
100 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
101 | this->u_.in_output_data.output_data = od; | |
102 | this->u_.in_output_data.offset_is_from_end = offset_is_from_end; | |
103 | this->source_ = IN_OUTPUT_DATA; | |
008db82e | 104 | this->in_reg_ = true; |
ead1e424 ILT |
105 | } |
106 | ||
107 | // Initialize the fields in the base class Symbol for a symbol defined | |
108 | // in an Output_segment. | |
109 | ||
110 | void | |
111 | Symbol::init_base(const char* name, Output_segment* os, elfcpp::STT type, | |
112 | elfcpp::STB binding, elfcpp::STV visibility, | |
113 | unsigned char nonvis, Segment_offset_base offset_base) | |
114 | { | |
115 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
116 | this->u_.in_output_segment.output_segment = os; | |
117 | this->u_.in_output_segment.offset_base = offset_base; | |
118 | this->source_ = IN_OUTPUT_SEGMENT; | |
008db82e | 119 | this->in_reg_ = true; |
ead1e424 ILT |
120 | } |
121 | ||
122 | // Initialize the fields in the base class Symbol for a symbol defined | |
123 | // as a constant. | |
124 | ||
125 | void | |
126 | Symbol::init_base(const char* name, elfcpp::STT type, | |
127 | elfcpp::STB binding, elfcpp::STV visibility, | |
128 | unsigned char nonvis) | |
129 | { | |
130 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
131 | this->source_ = CONSTANT; | |
008db82e | 132 | this->in_reg_ = true; |
ead1e424 ILT |
133 | } |
134 | ||
135 | // Initialize the fields in Sized_symbol for SYM in OBJECT. | |
14bfc3f5 ILT |
136 | |
137 | template<int size> | |
138 | template<bool big_endian> | |
139 | void | |
140 | Sized_symbol<size>::init(const char* name, const char* version, Object* object, | |
141 | const elfcpp::Sym<size, big_endian>& sym) | |
142 | { | |
143 | this->init_base(name, version, object, sym); | |
144 | this->value_ = sym.get_st_value(); | |
ead1e424 ILT |
145 | this->symsize_ = sym.get_st_size(); |
146 | } | |
147 | ||
148 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
149 | // Output_data. | |
150 | ||
151 | template<int size> | |
152 | void | |
153 | Sized_symbol<size>::init(const char* name, Output_data* od, | |
154 | Value_type value, Size_type symsize, | |
155 | elfcpp::STT type, elfcpp::STB binding, | |
156 | elfcpp::STV visibility, unsigned char nonvis, | |
157 | bool offset_is_from_end) | |
158 | { | |
159 | this->init_base(name, od, type, binding, visibility, nonvis, | |
160 | offset_is_from_end); | |
161 | this->value_ = value; | |
162 | this->symsize_ = symsize; | |
163 | } | |
164 | ||
165 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
166 | // Output_segment. | |
167 | ||
168 | template<int size> | |
169 | void | |
170 | Sized_symbol<size>::init(const char* name, Output_segment* os, | |
171 | Value_type value, Size_type symsize, | |
172 | elfcpp::STT type, elfcpp::STB binding, | |
173 | elfcpp::STV visibility, unsigned char nonvis, | |
174 | Segment_offset_base offset_base) | |
175 | { | |
176 | this->init_base(name, os, type, binding, visibility, nonvis, offset_base); | |
177 | this->value_ = value; | |
178 | this->symsize_ = symsize; | |
179 | } | |
180 | ||
181 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
182 | // constant. | |
183 | ||
184 | template<int size> | |
185 | void | |
186 | Sized_symbol<size>::init(const char* name, Value_type value, Size_type symsize, | |
187 | elfcpp::STT type, elfcpp::STB binding, | |
188 | elfcpp::STV visibility, unsigned char nonvis) | |
189 | { | |
190 | this->init_base(name, type, binding, visibility, nonvis); | |
191 | this->value_ = value; | |
192 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
193 | } |
194 | ||
436ca963 ILT |
195 | // Return true if this symbol should be added to the dynamic symbol |
196 | // table. | |
197 | ||
198 | inline bool | |
199 | Symbol::should_add_dynsym_entry() const | |
200 | { | |
201 | // If the symbol is used by a dynamic relocation, we need to add it. | |
202 | if (this->needs_dynsym_entry()) | |
203 | return true; | |
204 | ||
205 | // If exporting all symbols or building a shared library, | |
206 | // and the symbol is defined in a regular object and is | |
207 | // externally visible, we need to add it. | |
208 | if ((parameters->export_dynamic() || parameters->output_is_shared()) | |
209 | && !this->is_from_dynobj() | |
210 | && this->is_externally_visible()) | |
211 | return true; | |
212 | ||
213 | return false; | |
214 | } | |
215 | ||
b3b74ddc ILT |
216 | // Return true if the final value of this symbol is known at link |
217 | // time. | |
218 | ||
219 | bool | |
220 | Symbol::final_value_is_known() const | |
221 | { | |
222 | // If we are not generating an executable, then no final values are | |
223 | // known, since they will change at runtime. | |
224 | if (!parameters->output_is_executable()) | |
225 | return false; | |
226 | ||
227 | // If the symbol is not from an object file, then it is defined, and | |
228 | // known. | |
229 | if (this->source_ != FROM_OBJECT) | |
230 | return true; | |
231 | ||
232 | // If the symbol is from a dynamic object, then the final value is | |
233 | // not known. | |
234 | if (this->object()->is_dynamic()) | |
235 | return false; | |
236 | ||
237 | // If the symbol is not undefined (it is defined or common), then | |
238 | // the final value is known. | |
239 | if (!this->is_undefined()) | |
240 | return true; | |
241 | ||
242 | // If the symbol is undefined, then whether the final value is known | |
243 | // depends on whether we are doing a static link. If we are doing a | |
244 | // dynamic link, then the final value could be filled in at runtime. | |
245 | // This could reasonably be the case for a weak undefined symbol. | |
246 | return parameters->doing_static_link(); | |
247 | } | |
248 | ||
14bfc3f5 ILT |
249 | // Class Symbol_table. |
250 | ||
251 | Symbol_table::Symbol_table() | |
9025d29d | 252 | : saw_undefined_(0), offset_(0), table_(), namepool_(), |
f6ce93d6 | 253 | forwarders_(), commons_(), warnings_() |
14bfc3f5 ILT |
254 | { |
255 | } | |
256 | ||
257 | Symbol_table::~Symbol_table() | |
258 | { | |
259 | } | |
260 | ||
261 | // The hash function. The key is always canonicalized, so we use a | |
262 | // simple combination of the pointers. | |
263 | ||
264 | size_t | |
265 | Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key& key) const | |
266 | { | |
f0641a0b | 267 | return key.first ^ key.second; |
14bfc3f5 ILT |
268 | } |
269 | ||
270 | // The symbol table key equality function. This is only called with | |
271 | // canonicalized name and version strings, so we can use pointer | |
272 | // comparison. | |
273 | ||
274 | bool | |
275 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, | |
276 | const Symbol_table_key& k2) const | |
277 | { | |
278 | return k1.first == k2.first && k1.second == k2.second; | |
279 | } | |
280 | ||
281 | // Make TO a symbol which forwards to FROM. | |
282 | ||
283 | void | |
284 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
285 | { | |
a3ad94ed ILT |
286 | gold_assert(from != to); |
287 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
288 | this->forwarders_[from] = to; |
289 | from->set_forwarder(); | |
290 | } | |
291 | ||
61ba1cf9 ILT |
292 | // Resolve the forwards from FROM, returning the real symbol. |
293 | ||
14bfc3f5 | 294 | Symbol* |
c06b7b0b | 295 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 296 | { |
a3ad94ed | 297 | gold_assert(from->is_forwarder()); |
c06b7b0b | 298 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 299 | this->forwarders_.find(from); |
a3ad94ed | 300 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
301 | return p->second; |
302 | } | |
303 | ||
61ba1cf9 ILT |
304 | // Look up a symbol by name. |
305 | ||
306 | Symbol* | |
307 | Symbol_table::lookup(const char* name, const char* version) const | |
308 | { | |
f0641a0b ILT |
309 | Stringpool::Key name_key; |
310 | name = this->namepool_.find(name, &name_key); | |
61ba1cf9 ILT |
311 | if (name == NULL) |
312 | return NULL; | |
f0641a0b ILT |
313 | |
314 | Stringpool::Key version_key = 0; | |
61ba1cf9 ILT |
315 | if (version != NULL) |
316 | { | |
f0641a0b | 317 | version = this->namepool_.find(version, &version_key); |
61ba1cf9 ILT |
318 | if (version == NULL) |
319 | return NULL; | |
320 | } | |
321 | ||
f0641a0b | 322 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
323 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
324 | if (p == this->table_.end()) | |
325 | return NULL; | |
326 | return p->second; | |
327 | } | |
328 | ||
14bfc3f5 ILT |
329 | // Resolve a Symbol with another Symbol. This is only used in the |
330 | // unusual case where there are references to both an unversioned | |
331 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
332 | // version is the default version. Because this is unusual, we do |
333 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 334 | |
1564db8d | 335 | template<int size, bool big_endian> |
14bfc3f5 | 336 | void |
14b31740 ILT |
337 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from, |
338 | const char* version ACCEPT_SIZE_ENDIAN) | |
14bfc3f5 | 339 | { |
1564db8d ILT |
340 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
341 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
342 | // We don't bother to set the st_name field. | |
343 | esym.put_st_value(from->value()); | |
344 | esym.put_st_size(from->symsize()); | |
345 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 346 | esym.put_st_other(from->visibility(), from->nonvis()); |
16649710 | 347 | esym.put_st_shndx(from->shndx()); |
70e654ba | 348 | this->resolve(to, esym.sym(), esym.sym(), from->object(), version); |
1ebd95fd ILT |
349 | if (from->in_reg()) |
350 | to->set_in_reg(); | |
351 | if (from->in_dyn()) | |
352 | to->set_in_dyn(); | |
14bfc3f5 ILT |
353 | } |
354 | ||
355 | // Add one symbol from OBJECT to the symbol table. NAME is symbol | |
356 | // name and VERSION is the version; both are canonicalized. DEF is | |
357 | // whether this is the default version. | |
358 | ||
359 | // If DEF is true, then this is the definition of a default version of | |
360 | // a symbol. That means that any lookup of NAME/NULL and any lookup | |
361 | // of NAME/VERSION should always return the same symbol. This is | |
362 | // obvious for references, but in particular we want to do this for | |
363 | // definitions: overriding NAME/NULL should also override | |
364 | // NAME/VERSION. If we don't do that, it would be very hard to | |
365 | // override functions in a shared library which uses versioning. | |
366 | ||
367 | // We implement this by simply making both entries in the hash table | |
368 | // point to the same Symbol structure. That is easy enough if this is | |
369 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
370 | // that we have seen both already, in which case they will both have | |
371 | // independent entries in the symbol table. We can't simply change | |
372 | // the symbol table entry, because we have pointers to the entries | |
373 | // attached to the object files. So we mark the entry attached to the | |
374 | // object file as a forwarder, and record it in the forwarders_ map. | |
375 | // Note that entries in the hash table will never be marked as | |
376 | // forwarders. | |
70e654ba ILT |
377 | // |
378 | // SYM and ORIG_SYM are almost always the same. ORIG_SYM is the | |
379 | // symbol exactly as it existed in the input file. SYM is usually | |
380 | // that as well, but can be modified, for instance if we determine | |
381 | // it's in a to-be-discarded section. | |
14bfc3f5 ILT |
382 | |
383 | template<int size, bool big_endian> | |
aeddab66 | 384 | Sized_symbol<size>* |
f6ce93d6 | 385 | Symbol_table::add_from_object(Object* object, |
14bfc3f5 | 386 | const char *name, |
f0641a0b ILT |
387 | Stringpool::Key name_key, |
388 | const char *version, | |
389 | Stringpool::Key version_key, | |
390 | bool def, | |
70e654ba ILT |
391 | const elfcpp::Sym<size, big_endian>& sym, |
392 | const elfcpp::Sym<size, big_endian>& orig_sym) | |
14bfc3f5 ILT |
393 | { |
394 | Symbol* const snull = NULL; | |
395 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
396 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
397 | snull)); | |
14bfc3f5 ILT |
398 | |
399 | std::pair<typename Symbol_table_type::iterator, bool> insdef = | |
400 | std::make_pair(this->table_.end(), false); | |
401 | if (def) | |
402 | { | |
f0641a0b ILT |
403 | const Stringpool::Key vnull_key = 0; |
404 | insdef = this->table_.insert(std::make_pair(std::make_pair(name_key, | |
405 | vnull_key), | |
14bfc3f5 ILT |
406 | snull)); |
407 | } | |
408 | ||
409 | // ins.first: an iterator, which is a pointer to a pair. | |
410 | // ins.first->first: the key (a pair of name and version). | |
411 | // ins.first->second: the value (Symbol*). | |
412 | // ins.second: true if new entry was inserted, false if not. | |
413 | ||
1564db8d | 414 | Sized_symbol<size>* ret; |
ead1e424 ILT |
415 | bool was_undefined; |
416 | bool was_common; | |
14bfc3f5 ILT |
417 | if (!ins.second) |
418 | { | |
419 | // We already have an entry for NAME/VERSION. | |
593f47df ILT |
420 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) (ins.first->second |
421 | SELECT_SIZE(size)); | |
a3ad94ed | 422 | gold_assert(ret != NULL); |
ead1e424 ILT |
423 | |
424 | was_undefined = ret->is_undefined(); | |
425 | was_common = ret->is_common(); | |
426 | ||
70e654ba | 427 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
428 | |
429 | if (def) | |
430 | { | |
431 | if (insdef.second) | |
432 | { | |
433 | // This is the first time we have seen NAME/NULL. Make | |
434 | // NAME/NULL point to NAME/VERSION. | |
435 | insdef.first->second = ret; | |
436 | } | |
dbe717ef | 437 | else if (insdef.first->second != ret) |
14bfc3f5 ILT |
438 | { |
439 | // This is the unfortunate case where we already have | |
440 | // entries for both NAME/VERSION and NAME/NULL. | |
274e99f9 | 441 | const Sized_symbol<size>* sym2; |
593f47df | 442 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
443 | insdef.first->second |
444 | SELECT_SIZE(size)); | |
593f47df | 445 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
14b31740 | 446 | ret, sym2, version SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
447 | this->make_forwarder(insdef.first->second, ret); |
448 | insdef.first->second = ret; | |
449 | } | |
450 | } | |
451 | } | |
452 | else | |
453 | { | |
454 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 455 | gold_assert(ins.first->second == NULL); |
ead1e424 ILT |
456 | |
457 | was_undefined = false; | |
458 | was_common = false; | |
459 | ||
14bfc3f5 ILT |
460 | if (def && !insdef.second) |
461 | { | |
14b31740 ILT |
462 | // We already have an entry for NAME/NULL. If we override |
463 | // it, then change it to NAME/VERSION. | |
593f47df ILT |
464 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
465 | insdef.first->second | |
466 | SELECT_SIZE(size)); | |
70e654ba | 467 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
468 | ins.first->second = ret; |
469 | } | |
470 | else | |
471 | { | |
f6ce93d6 ILT |
472 | Sized_target<size, big_endian>* target = |
473 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
474 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
475 | if (!target->has_make_symbol()) |
476 | ret = new Sized_symbol<size>(); | |
477 | else | |
14bfc3f5 | 478 | { |
1564db8d ILT |
479 | ret = target->make_symbol(); |
480 | if (ret == NULL) | |
14bfc3f5 ILT |
481 | { |
482 | // This means that we don't want a symbol table | |
483 | // entry after all. | |
484 | if (!def) | |
485 | this->table_.erase(ins.first); | |
486 | else | |
487 | { | |
488 | this->table_.erase(insdef.first); | |
489 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
490 | this->table_.erase(std::make_pair(name_key, |
491 | version_key)); | |
14bfc3f5 ILT |
492 | } |
493 | return NULL; | |
494 | } | |
495 | } | |
14bfc3f5 | 496 | |
1564db8d ILT |
497 | ret->init(name, version, object, sym); |
498 | ||
14bfc3f5 ILT |
499 | ins.first->second = ret; |
500 | if (def) | |
501 | { | |
502 | // This is the first time we have seen NAME/NULL. Point | |
503 | // it at the new entry for NAME/VERSION. | |
a3ad94ed | 504 | gold_assert(insdef.second); |
14bfc3f5 ILT |
505 | insdef.first->second = ret; |
506 | } | |
507 | } | |
508 | } | |
509 | ||
ead1e424 ILT |
510 | // Record every time we see a new undefined symbol, to speed up |
511 | // archive groups. | |
512 | if (!was_undefined && ret->is_undefined()) | |
513 | ++this->saw_undefined_; | |
514 | ||
515 | // Keep track of common symbols, to speed up common symbol | |
516 | // allocation. | |
517 | if (!was_common && ret->is_common()) | |
518 | this->commons_.push_back(ret); | |
519 | ||
14bfc3f5 ILT |
520 | return ret; |
521 | } | |
522 | ||
f6ce93d6 | 523 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
524 | |
525 | template<int size, bool big_endian> | |
526 | void | |
dbe717ef ILT |
527 | Symbol_table::add_from_relobj( |
528 | Sized_relobj<size, big_endian>* relobj, | |
f6ce93d6 | 529 | const unsigned char* syms, |
14bfc3f5 ILT |
530 | size_t count, |
531 | const char* sym_names, | |
532 | size_t sym_name_size, | |
730cdc88 | 533 | typename Sized_relobj<size, big_endian>::Symbols* sympointers) |
14bfc3f5 | 534 | { |
9025d29d ILT |
535 | gold_assert(size == relobj->target()->get_size()); |
536 | gold_assert(size == parameters->get_size()); | |
14bfc3f5 | 537 | |
a783673b ILT |
538 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
539 | ||
f6ce93d6 | 540 | const unsigned char* p = syms; |
a783673b | 541 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
542 | { |
543 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 544 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 545 | |
a783673b | 546 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
547 | if (st_name >= sym_name_size) |
548 | { | |
75f2446e ILT |
549 | relobj->error(_("bad global symbol name offset %u at %zu"), |
550 | st_name, i); | |
551 | continue; | |
14bfc3f5 ILT |
552 | } |
553 | ||
dbe717ef ILT |
554 | const char* name = sym_names + st_name; |
555 | ||
a783673b ILT |
556 | // A symbol defined in a section which we are not including must |
557 | // be treated as an undefined symbol. | |
558 | unsigned char symbuf[sym_size]; | |
559 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
560 | unsigned int st_shndx = psym->get_st_shndx(); | |
561 | if (st_shndx != elfcpp::SHN_UNDEF | |
562 | && st_shndx < elfcpp::SHN_LORESERVE | |
dbe717ef | 563 | && !relobj->is_section_included(st_shndx)) |
a783673b ILT |
564 | { |
565 | memcpy(symbuf, p, sym_size); | |
566 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
567 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
568 | psym = &sym2; | |
569 | } | |
570 | ||
14bfc3f5 ILT |
571 | // In an object file, an '@' in the name separates the symbol |
572 | // name from the version name. If there are two '@' characters, | |
573 | // this is the default version. | |
574 | const char* ver = strchr(name, '@'); | |
575 | ||
aeddab66 | 576 | Sized_symbol<size>* res; |
14bfc3f5 ILT |
577 | if (ver == NULL) |
578 | { | |
f0641a0b | 579 | Stringpool::Key name_key; |
cfd73a4e | 580 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 581 | res = this->add_from_object(relobj, name, name_key, NULL, 0, |
70e654ba | 582 | false, *psym, sym); |
14bfc3f5 ILT |
583 | } |
584 | else | |
585 | { | |
f0641a0b | 586 | Stringpool::Key name_key; |
cfd73a4e | 587 | name = this->namepool_.add_prefix(name, ver - name, &name_key); |
f0641a0b | 588 | |
14bfc3f5 ILT |
589 | bool def = false; |
590 | ++ver; | |
591 | if (*ver == '@') | |
592 | { | |
593 | def = true; | |
594 | ++ver; | |
595 | } | |
f0641a0b ILT |
596 | |
597 | Stringpool::Key ver_key; | |
cfd73a4e | 598 | ver = this->namepool_.add(ver, true, &ver_key); |
f0641a0b | 599 | |
dbe717ef | 600 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
70e654ba | 601 | def, *psym, sym); |
14bfc3f5 ILT |
602 | } |
603 | ||
730cdc88 | 604 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
605 | } |
606 | } | |
607 | ||
dbe717ef ILT |
608 | // Add all the symbols in a dynamic object to the hash table. |
609 | ||
610 | template<int size, bool big_endian> | |
611 | void | |
612 | Symbol_table::add_from_dynobj( | |
613 | Sized_dynobj<size, big_endian>* dynobj, | |
614 | const unsigned char* syms, | |
615 | size_t count, | |
616 | const char* sym_names, | |
617 | size_t sym_name_size, | |
618 | const unsigned char* versym, | |
619 | size_t versym_size, | |
620 | const std::vector<const char*>* version_map) | |
621 | { | |
9025d29d ILT |
622 | gold_assert(size == dynobj->target()->get_size()); |
623 | gold_assert(size == parameters->get_size()); | |
dbe717ef ILT |
624 | |
625 | if (versym != NULL && versym_size / 2 < count) | |
626 | { | |
75f2446e ILT |
627 | dynobj->error(_("too few symbol versions")); |
628 | return; | |
dbe717ef ILT |
629 | } |
630 | ||
631 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
632 | ||
aeddab66 ILT |
633 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
634 | // weak aliases. This is necessary because if the dynamic object | |
635 | // provides the same variable under two names, one of which is a | |
636 | // weak definition, and the regular object refers to the weak | |
637 | // definition, we have to put both the weak definition and the | |
638 | // strong definition into the dynamic symbol table. Given a weak | |
639 | // definition, the only way that we can find the corresponding | |
640 | // strong definition, if any, is to search the symbol table. | |
641 | std::vector<Sized_symbol<size>*> object_symbols; | |
642 | ||
dbe717ef ILT |
643 | const unsigned char* p = syms; |
644 | const unsigned char* vs = versym; | |
645 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
646 | { | |
647 | elfcpp::Sym<size, big_endian> sym(p); | |
648 | ||
649 | // Ignore symbols with local binding. | |
650 | if (sym.get_st_bind() == elfcpp::STB_LOCAL) | |
651 | continue; | |
652 | ||
653 | unsigned int st_name = sym.get_st_name(); | |
654 | if (st_name >= sym_name_size) | |
655 | { | |
75f2446e ILT |
656 | dynobj->error(_("bad symbol name offset %u at %zu"), |
657 | st_name, i); | |
658 | continue; | |
dbe717ef ILT |
659 | } |
660 | ||
661 | const char* name = sym_names + st_name; | |
662 | ||
aeddab66 ILT |
663 | Sized_symbol<size>* res; |
664 | ||
dbe717ef ILT |
665 | if (versym == NULL) |
666 | { | |
667 | Stringpool::Key name_key; | |
cfd73a4e | 668 | name = this->namepool_.add(name, true, &name_key); |
aeddab66 | 669 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
70e654ba | 670 | false, sym, sym); |
dbe717ef | 671 | } |
aeddab66 ILT |
672 | else |
673 | { | |
674 | // Read the version information. | |
dbe717ef | 675 | |
aeddab66 | 676 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 677 | |
aeddab66 ILT |
678 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
679 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 680 | |
aeddab66 ILT |
681 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
682 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
683 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
684 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
685 | // for an undefined symbol. I don't know what the Sun | |
686 | // linker will generate. | |
dbe717ef | 687 | |
aeddab66 ILT |
688 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
689 | && sym.get_st_shndx() != elfcpp::SHN_UNDEF) | |
690 | { | |
691 | // This symbol should not be visible outside the object. | |
692 | continue; | |
693 | } | |
64707334 | 694 | |
aeddab66 ILT |
695 | // At this point we are definitely going to add this symbol. |
696 | Stringpool::Key name_key; | |
697 | name = this->namepool_.add(name, true, &name_key); | |
dbe717ef | 698 | |
aeddab66 ILT |
699 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
700 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
701 | { | |
702 | // This symbol does not have a version. | |
703 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 704 | false, sym, sym); |
aeddab66 ILT |
705 | } |
706 | else | |
707 | { | |
708 | if (v >= version_map->size()) | |
709 | { | |
710 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
711 | i, v); | |
712 | continue; | |
713 | } | |
dbe717ef | 714 | |
aeddab66 ILT |
715 | const char* version = (*version_map)[v]; |
716 | if (version == NULL) | |
717 | { | |
718 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
719 | i, v); | |
720 | continue; | |
721 | } | |
dbe717ef | 722 | |
aeddab66 ILT |
723 | Stringpool::Key version_key; |
724 | version = this->namepool_.add(version, true, &version_key); | |
725 | ||
726 | // If this is an absolute symbol, and the version name | |
727 | // and symbol name are the same, then this is the | |
728 | // version definition symbol. These symbols exist to | |
729 | // support using -u to pull in particular versions. We | |
730 | // do not want to record a version for them. | |
731 | if (sym.get_st_shndx() == elfcpp::SHN_ABS | |
732 | && name_key == version_key) | |
733 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 734 | false, sym, sym); |
aeddab66 ILT |
735 | else |
736 | { | |
737 | const bool def = (!hidden | |
738 | && (sym.get_st_shndx() | |
739 | != elfcpp::SHN_UNDEF)); | |
740 | res = this->add_from_object(dynobj, name, name_key, version, | |
70e654ba | 741 | version_key, def, sym, sym); |
aeddab66 ILT |
742 | } |
743 | } | |
dbe717ef ILT |
744 | } |
745 | ||
aeddab66 ILT |
746 | if (sym.get_st_shndx() != elfcpp::SHN_UNDEF |
747 | && sym.get_st_type() == elfcpp::STT_OBJECT) | |
748 | object_symbols.push_back(res); | |
749 | } | |
750 | ||
751 | this->record_weak_aliases(&object_symbols); | |
752 | } | |
753 | ||
754 | // This is used to sort weak aliases. We sort them first by section | |
755 | // index, then by offset, then by weak ahead of strong. | |
756 | ||
757 | template<int size> | |
758 | class Weak_alias_sorter | |
759 | { | |
760 | public: | |
761 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
762 | }; | |
763 | ||
764 | template<int size> | |
765 | bool | |
766 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
767 | const Sized_symbol<size>* s2) const | |
768 | { | |
769 | if (s1->shndx() != s2->shndx()) | |
770 | return s1->shndx() < s2->shndx(); | |
771 | if (s1->value() != s2->value()) | |
772 | return s1->value() < s2->value(); | |
773 | if (s1->binding() != s2->binding()) | |
774 | { | |
775 | if (s1->binding() == elfcpp::STB_WEAK) | |
776 | return true; | |
777 | if (s2->binding() == elfcpp::STB_WEAK) | |
778 | return false; | |
779 | } | |
780 | return std::string(s1->name()) < std::string(s2->name()); | |
781 | } | |
dbe717ef | 782 | |
aeddab66 ILT |
783 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
784 | // for any weak aliases, and record them so that if we add the weak | |
785 | // alias to the dynamic symbol table, we also add the corresponding | |
786 | // strong symbol. | |
dbe717ef | 787 | |
aeddab66 ILT |
788 | template<int size> |
789 | void | |
790 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
791 | { | |
792 | // Sort the vector by section index, then by offset, then by weak | |
793 | // ahead of strong. | |
794 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
795 | ||
796 | // Walk through the vector. For each weak definition, record | |
797 | // aliases. | |
798 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
799 | symbols->begin(); | |
800 | p != symbols->end(); | |
801 | ++p) | |
802 | { | |
803 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
804 | continue; | |
805 | ||
806 | // Build a circular list of weak aliases. Each symbol points to | |
807 | // the next one in the circular list. | |
808 | ||
809 | Sized_symbol<size>* from_sym = *p; | |
810 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
811 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 812 | { |
aeddab66 ILT |
813 | if ((*q)->shndx() != from_sym->shndx() |
814 | || (*q)->value() != from_sym->value()) | |
815 | break; | |
816 | ||
817 | this->weak_aliases_[from_sym] = *q; | |
818 | from_sym->set_has_alias(); | |
819 | from_sym = *q; | |
dbe717ef ILT |
820 | } |
821 | ||
aeddab66 ILT |
822 | if (from_sym != *p) |
823 | { | |
824 | this->weak_aliases_[from_sym] = *p; | |
825 | from_sym->set_has_alias(); | |
826 | } | |
dbe717ef | 827 | |
aeddab66 | 828 | p = q - 1; |
dbe717ef ILT |
829 | } |
830 | } | |
831 | ||
ead1e424 ILT |
832 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
833 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 834 | // If this does not return NULL, it sets *POLDSYM to the existing |
306d9ef0 | 835 | // symbol if there is one. This canonicalizes *PNAME and *PVERSION. |
ead1e424 ILT |
836 | |
837 | template<int size, bool big_endian> | |
838 | Sized_symbol<size>* | |
306d9ef0 ILT |
839 | Symbol_table::define_special_symbol(const Target* target, const char** pname, |
840 | const char** pversion, bool only_if_ref, | |
86f2e683 | 841 | Sized_symbol<size>** poldsym |
593f47df | 842 | ACCEPT_SIZE_ENDIAN) |
ead1e424 | 843 | { |
ead1e424 ILT |
844 | Symbol* oldsym; |
845 | Sized_symbol<size>* sym; | |
86f2e683 ILT |
846 | bool add_to_table = false; |
847 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
ead1e424 ILT |
848 | |
849 | if (only_if_ref) | |
850 | { | |
306d9ef0 | 851 | oldsym = this->lookup(*pname, *pversion); |
f6ce93d6 | 852 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 853 | return NULL; |
306d9ef0 ILT |
854 | |
855 | *pname = oldsym->name(); | |
856 | *pversion = oldsym->version(); | |
ead1e424 ILT |
857 | } |
858 | else | |
859 | { | |
14b31740 | 860 | // Canonicalize NAME and VERSION. |
f0641a0b | 861 | Stringpool::Key name_key; |
cfd73a4e | 862 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 863 | |
14b31740 | 864 | Stringpool::Key version_key = 0; |
306d9ef0 | 865 | if (*pversion != NULL) |
cfd73a4e | 866 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 867 | |
ead1e424 | 868 | Symbol* const snull = NULL; |
ead1e424 | 869 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
870 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
871 | version_key), | |
ead1e424 ILT |
872 | snull)); |
873 | ||
874 | if (!ins.second) | |
875 | { | |
14b31740 | 876 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 877 | oldsym = ins.first->second; |
a3ad94ed | 878 | gold_assert(oldsym != NULL); |
ead1e424 ILT |
879 | } |
880 | else | |
881 | { | |
882 | // We haven't seen this symbol before. | |
a3ad94ed | 883 | gold_assert(ins.first->second == NULL); |
86f2e683 ILT |
884 | add_to_table = true; |
885 | add_loc = ins.first; | |
ead1e424 ILT |
886 | oldsym = NULL; |
887 | } | |
888 | } | |
889 | ||
86f2e683 ILT |
890 | if (!target->has_make_symbol()) |
891 | sym = new Sized_symbol<size>(); | |
892 | else | |
ead1e424 | 893 | { |
86f2e683 ILT |
894 | gold_assert(target->get_size() == size); |
895 | gold_assert(target->is_big_endian() ? big_endian : !big_endian); | |
896 | typedef Sized_target<size, big_endian> My_target; | |
897 | const My_target* sized_target = | |
898 | static_cast<const My_target*>(target); | |
899 | sym = sized_target->make_symbol(); | |
900 | if (sym == NULL) | |
901 | return NULL; | |
902 | } | |
ead1e424 | 903 | |
86f2e683 ILT |
904 | if (add_to_table) |
905 | add_loc->second = sym; | |
906 | else | |
907 | gold_assert(oldsym != NULL); | |
ead1e424 | 908 | |
86f2e683 ILT |
909 | *poldsym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
910 | SELECT_SIZE(size)); | |
ead1e424 ILT |
911 | |
912 | return sym; | |
913 | } | |
914 | ||
915 | // Define a symbol based on an Output_data. | |
916 | ||
14b31740 ILT |
917 | Symbol* |
918 | Symbol_table::define_in_output_data(const Target* target, const char* name, | |
919 | const char* version, Output_data* od, | |
ead1e424 ILT |
920 | uint64_t value, uint64_t symsize, |
921 | elfcpp::STT type, elfcpp::STB binding, | |
922 | elfcpp::STV visibility, | |
923 | unsigned char nonvis, | |
924 | bool offset_is_from_end, | |
925 | bool only_if_ref) | |
926 | { | |
9025d29d | 927 | if (parameters->get_size() == 32) |
86f2e683 ILT |
928 | { |
929 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
930 | return this->do_define_in_output_data<32>(target, name, version, od, | |
931 | value, symsize, type, binding, | |
932 | visibility, nonvis, | |
933 | offset_is_from_end, | |
934 | only_if_ref); | |
935 | #else | |
936 | gold_unreachable(); | |
937 | #endif | |
938 | } | |
9025d29d | 939 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
940 | { |
941 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
942 | return this->do_define_in_output_data<64>(target, name, version, od, | |
943 | value, symsize, type, binding, | |
944 | visibility, nonvis, | |
945 | offset_is_from_end, | |
946 | only_if_ref); | |
947 | #else | |
948 | gold_unreachable(); | |
949 | #endif | |
950 | } | |
ead1e424 | 951 | else |
a3ad94ed | 952 | gold_unreachable(); |
ead1e424 ILT |
953 | } |
954 | ||
955 | // Define a symbol in an Output_data, sized version. | |
956 | ||
957 | template<int size> | |
14b31740 | 958 | Sized_symbol<size>* |
ead1e424 | 959 | Symbol_table::do_define_in_output_data( |
14b31740 | 960 | const Target* target, |
ead1e424 | 961 | const char* name, |
14b31740 | 962 | const char* version, |
ead1e424 ILT |
963 | Output_data* od, |
964 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
965 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
966 | elfcpp::STT type, | |
967 | elfcpp::STB binding, | |
968 | elfcpp::STV visibility, | |
969 | unsigned char nonvis, | |
970 | bool offset_is_from_end, | |
971 | bool only_if_ref) | |
972 | { | |
973 | Sized_symbol<size>* sym; | |
86f2e683 | 974 | Sized_symbol<size>* oldsym; |
ead1e424 | 975 | |
9025d29d | 976 | if (parameters->is_big_endian()) |
193a53d9 ILT |
977 | { |
978 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
979 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
306d9ef0 | 980 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
981 | SELECT_SIZE_ENDIAN(size, true)); |
982 | #else | |
983 | gold_unreachable(); | |
984 | #endif | |
985 | } | |
ead1e424 | 986 | else |
193a53d9 ILT |
987 | { |
988 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
989 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
306d9ef0 | 990 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
991 | SELECT_SIZE_ENDIAN(size, false)); |
992 | #else | |
993 | gold_unreachable(); | |
994 | #endif | |
995 | } | |
ead1e424 ILT |
996 | |
997 | if (sym == NULL) | |
14b31740 | 998 | return NULL; |
ead1e424 | 999 | |
d4f5281b | 1000 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1001 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, |
1002 | offset_is_from_end); | |
14b31740 | 1003 | |
86f2e683 ILT |
1004 | if (oldsym != NULL |
1005 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1006 | this->override_with_special(oldsym, sym); |
86f2e683 | 1007 | |
14b31740 | 1008 | return sym; |
ead1e424 ILT |
1009 | } |
1010 | ||
1011 | // Define a symbol based on an Output_segment. | |
1012 | ||
14b31740 ILT |
1013 | Symbol* |
1014 | Symbol_table::define_in_output_segment(const Target* target, const char* name, | |
1015 | const char* version, Output_segment* os, | |
ead1e424 ILT |
1016 | uint64_t value, uint64_t symsize, |
1017 | elfcpp::STT type, elfcpp::STB binding, | |
1018 | elfcpp::STV visibility, | |
1019 | unsigned char nonvis, | |
1020 | Symbol::Segment_offset_base offset_base, | |
1021 | bool only_if_ref) | |
1022 | { | |
9025d29d | 1023 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1024 | { |
1025 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1026 | return this->do_define_in_output_segment<32>(target, name, version, os, | |
1027 | value, symsize, type, | |
1028 | binding, visibility, nonvis, | |
1029 | offset_base, only_if_ref); | |
1030 | #else | |
1031 | gold_unreachable(); | |
1032 | #endif | |
1033 | } | |
9025d29d | 1034 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1035 | { |
1036 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1037 | return this->do_define_in_output_segment<64>(target, name, version, os, | |
1038 | value, symsize, type, | |
1039 | binding, visibility, nonvis, | |
1040 | offset_base, only_if_ref); | |
1041 | #else | |
1042 | gold_unreachable(); | |
1043 | #endif | |
1044 | } | |
ead1e424 | 1045 | else |
a3ad94ed | 1046 | gold_unreachable(); |
ead1e424 ILT |
1047 | } |
1048 | ||
1049 | // Define a symbol in an Output_segment, sized version. | |
1050 | ||
1051 | template<int size> | |
14b31740 | 1052 | Sized_symbol<size>* |
ead1e424 | 1053 | Symbol_table::do_define_in_output_segment( |
14b31740 | 1054 | const Target* target, |
ead1e424 | 1055 | const char* name, |
14b31740 | 1056 | const char* version, |
ead1e424 ILT |
1057 | Output_segment* os, |
1058 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1059 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1060 | elfcpp::STT type, | |
1061 | elfcpp::STB binding, | |
1062 | elfcpp::STV visibility, | |
1063 | unsigned char nonvis, | |
1064 | Symbol::Segment_offset_base offset_base, | |
1065 | bool only_if_ref) | |
1066 | { | |
1067 | Sized_symbol<size>* sym; | |
86f2e683 | 1068 | Sized_symbol<size>* oldsym; |
ead1e424 | 1069 | |
9025d29d ILT |
1070 | if (parameters->is_big_endian()) |
1071 | { | |
1072 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1073 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1074 | target, &name, &version, only_if_ref, &oldsym | |
1075 | SELECT_SIZE_ENDIAN(size, true)); | |
1076 | #else | |
1077 | gold_unreachable(); | |
1078 | #endif | |
1079 | } | |
ead1e424 | 1080 | else |
9025d29d ILT |
1081 | { |
1082 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1083 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1084 | target, &name, &version, only_if_ref, &oldsym | |
1085 | SELECT_SIZE_ENDIAN(size, false)); | |
1086 | #else | |
1087 | gold_unreachable(); | |
1088 | #endif | |
1089 | } | |
ead1e424 ILT |
1090 | |
1091 | if (sym == NULL) | |
14b31740 | 1092 | return NULL; |
ead1e424 | 1093 | |
d4f5281b | 1094 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1095 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, |
1096 | offset_base); | |
14b31740 | 1097 | |
86f2e683 ILT |
1098 | if (oldsym != NULL |
1099 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1100 | this->override_with_special(oldsym, sym); |
86f2e683 | 1101 | |
14b31740 | 1102 | return sym; |
ead1e424 ILT |
1103 | } |
1104 | ||
1105 | // Define a special symbol with a constant value. It is a multiple | |
1106 | // definition error if this symbol is already defined. | |
1107 | ||
14b31740 ILT |
1108 | Symbol* |
1109 | Symbol_table::define_as_constant(const Target* target, const char* name, | |
1110 | const char* version, uint64_t value, | |
1111 | uint64_t symsize, elfcpp::STT type, | |
1112 | elfcpp::STB binding, elfcpp::STV visibility, | |
1113 | unsigned char nonvis, bool only_if_ref) | |
ead1e424 | 1114 | { |
9025d29d | 1115 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1116 | { |
1117 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1118 | return this->do_define_as_constant<32>(target, name, version, value, | |
1119 | symsize, type, binding, | |
1120 | visibility, nonvis, only_if_ref); | |
1121 | #else | |
1122 | gold_unreachable(); | |
1123 | #endif | |
1124 | } | |
9025d29d | 1125 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1126 | { |
1127 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1128 | return this->do_define_as_constant<64>(target, name, version, value, | |
1129 | symsize, type, binding, | |
1130 | visibility, nonvis, only_if_ref); | |
1131 | #else | |
1132 | gold_unreachable(); | |
1133 | #endif | |
1134 | } | |
ead1e424 | 1135 | else |
a3ad94ed | 1136 | gold_unreachable(); |
ead1e424 ILT |
1137 | } |
1138 | ||
1139 | // Define a symbol as a constant, sized version. | |
1140 | ||
1141 | template<int size> | |
14b31740 | 1142 | Sized_symbol<size>* |
ead1e424 | 1143 | Symbol_table::do_define_as_constant( |
14b31740 | 1144 | const Target* target, |
ead1e424 | 1145 | const char* name, |
14b31740 | 1146 | const char* version, |
ead1e424 ILT |
1147 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1148 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1149 | elfcpp::STT type, | |
1150 | elfcpp::STB binding, | |
1151 | elfcpp::STV visibility, | |
1152 | unsigned char nonvis, | |
1153 | bool only_if_ref) | |
1154 | { | |
1155 | Sized_symbol<size>* sym; | |
86f2e683 | 1156 | Sized_symbol<size>* oldsym; |
ead1e424 | 1157 | |
9025d29d ILT |
1158 | if (parameters->is_big_endian()) |
1159 | { | |
1160 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1161 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1162 | target, &name, &version, only_if_ref, &oldsym | |
1163 | SELECT_SIZE_ENDIAN(size, true)); | |
1164 | #else | |
1165 | gold_unreachable(); | |
1166 | #endif | |
1167 | } | |
ead1e424 | 1168 | else |
9025d29d ILT |
1169 | { |
1170 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1171 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1172 | target, &name, &version, only_if_ref, &oldsym | |
1173 | SELECT_SIZE_ENDIAN(size, false)); | |
1174 | #else | |
1175 | gold_unreachable(); | |
1176 | #endif | |
1177 | } | |
ead1e424 ILT |
1178 | |
1179 | if (sym == NULL) | |
14b31740 | 1180 | return NULL; |
ead1e424 | 1181 | |
d4f5281b | 1182 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 | 1183 | sym->init(name, value, symsize, type, binding, visibility, nonvis); |
14b31740 | 1184 | |
86f2e683 ILT |
1185 | if (oldsym != NULL |
1186 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1187 | this->override_with_special(oldsym, sym); |
86f2e683 | 1188 | |
14b31740 | 1189 | return sym; |
ead1e424 ILT |
1190 | } |
1191 | ||
1192 | // Define a set of symbols in output sections. | |
1193 | ||
1194 | void | |
14b31740 ILT |
1195 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1196 | int count, const Define_symbol_in_section* p) | |
ead1e424 ILT |
1197 | { |
1198 | for (int i = 0; i < count; ++i, ++p) | |
1199 | { | |
1200 | Output_section* os = layout->find_output_section(p->output_section); | |
1201 | if (os != NULL) | |
14b31740 ILT |
1202 | this->define_in_output_data(target, p->name, NULL, os, p->value, |
1203 | p->size, p->type, p->binding, | |
1204 | p->visibility, p->nonvis, | |
1205 | p->offset_is_from_end, p->only_if_ref); | |
ead1e424 | 1206 | else |
14b31740 | 1207 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1208 | p->binding, p->visibility, p->nonvis, |
1209 | p->only_if_ref); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | // Define a set of symbols in output segments. | |
1214 | ||
1215 | void | |
14b31740 ILT |
1216 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1217 | int count, const Define_symbol_in_segment* p) | |
ead1e424 ILT |
1218 | { |
1219 | for (int i = 0; i < count; ++i, ++p) | |
1220 | { | |
1221 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
1222 | p->segment_flags_set, | |
1223 | p->segment_flags_clear); | |
1224 | if (os != NULL) | |
14b31740 ILT |
1225 | this->define_in_output_segment(target, p->name, NULL, os, p->value, |
1226 | p->size, p->type, p->binding, | |
1227 | p->visibility, p->nonvis, | |
1228 | p->offset_base, p->only_if_ref); | |
ead1e424 | 1229 | else |
14b31740 | 1230 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1231 | p->binding, p->visibility, p->nonvis, |
1232 | p->only_if_ref); | |
1233 | } | |
1234 | } | |
1235 | ||
46fe1623 ILT |
1236 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
1237 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
1238 | // the offset within POSD. | |
1239 | ||
1240 | template<int size> | |
1241 | void | |
1242 | Symbol_table::define_with_copy_reloc(const Target* target, | |
1243 | Sized_symbol<size>* csym, | |
1244 | Output_data* posd, uint64_t value) | |
1245 | { | |
1246 | gold_assert(csym->is_from_dynobj()); | |
1247 | gold_assert(!csym->is_copied_from_dynobj()); | |
1248 | Object* object = csym->object(); | |
1249 | gold_assert(object->is_dynamic()); | |
1250 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
1251 | ||
1252 | // Our copied variable has to override any variable in a shared | |
1253 | // library. | |
1254 | elfcpp::STB binding = csym->binding(); | |
1255 | if (binding == elfcpp::STB_WEAK) | |
1256 | binding = elfcpp::STB_GLOBAL; | |
1257 | ||
1258 | this->define_in_output_data(target, csym->name(), csym->version(), | |
1259 | posd, value, csym->symsize(), | |
1260 | csym->type(), binding, | |
1261 | csym->visibility(), csym->nonvis(), | |
1262 | false, false); | |
1263 | ||
1264 | csym->set_is_copied_from_dynobj(); | |
1265 | csym->set_needs_dynsym_entry(); | |
1266 | ||
1267 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
1268 | ||
1269 | // We have now defined all aliases, but we have not entered them all | |
1270 | // in the copied_symbol_dynobjs_ map. | |
1271 | if (csym->has_alias()) | |
1272 | { | |
1273 | Symbol* sym = csym; | |
1274 | while (true) | |
1275 | { | |
1276 | sym = this->weak_aliases_[sym]; | |
1277 | if (sym == csym) | |
1278 | break; | |
1279 | gold_assert(sym->output_data() == posd); | |
1280 | ||
1281 | sym->set_is_copied_from_dynobj(); | |
1282 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
1288 | // the original definition was found. | |
1289 | ||
1290 | Dynobj* | |
1291 | Symbol_table::get_copy_source(const Symbol* sym) const | |
1292 | { | |
1293 | gold_assert(sym->is_copied_from_dynobj()); | |
1294 | Copied_symbol_dynobjs::const_iterator p = | |
1295 | this->copied_symbol_dynobjs_.find(sym); | |
1296 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
1297 | return p->second; | |
1298 | } | |
1299 | ||
a3ad94ed ILT |
1300 | // Set the dynamic symbol indexes. INDEX is the index of the first |
1301 | // global dynamic symbol. Pointers to the symbols are stored into the | |
1302 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
1303 | // updated dynamic symbol index. | |
1304 | ||
1305 | unsigned int | |
35cdfc9a | 1306 | Symbol_table::set_dynsym_indexes(const Target* target, |
14b31740 | 1307 | unsigned int index, |
a3ad94ed | 1308 | std::vector<Symbol*>* syms, |
14b31740 ILT |
1309 | Stringpool* dynpool, |
1310 | Versions* versions) | |
a3ad94ed ILT |
1311 | { |
1312 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
1313 | p != this->table_.end(); | |
1314 | ++p) | |
1315 | { | |
1316 | Symbol* sym = p->second; | |
16649710 ILT |
1317 | |
1318 | // Note that SYM may already have a dynamic symbol index, since | |
1319 | // some symbols appear more than once in the symbol table, with | |
1320 | // and without a version. | |
1321 | ||
436ca963 | 1322 | if (!sym->should_add_dynsym_entry()) |
16649710 ILT |
1323 | sym->set_dynsym_index(-1U); |
1324 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
1325 | { |
1326 | sym->set_dynsym_index(index); | |
1327 | ++index; | |
1328 | syms->push_back(sym); | |
cfd73a4e | 1329 | dynpool->add(sym->name(), false, NULL); |
14b31740 ILT |
1330 | |
1331 | // Record any version information. | |
1332 | if (sym->version() != NULL) | |
35cdfc9a | 1333 | versions->record_version(this, dynpool, sym); |
a3ad94ed ILT |
1334 | } |
1335 | } | |
1336 | ||
14b31740 ILT |
1337 | // Finish up the versions. In some cases this may add new dynamic |
1338 | // symbols. | |
1339 | index = versions->finalize(target, this, index, syms); | |
1340 | ||
a3ad94ed ILT |
1341 | return index; |
1342 | } | |
1343 | ||
c06b7b0b ILT |
1344 | // Set the final values for all the symbols. The index of the first |
1345 | // global symbol in the output file is INDEX. Record the file offset | |
75f65a3e | 1346 | // OFF. Add their names to POOL. Return the new file offset. |
54dc6425 | 1347 | |
75f65a3e | 1348 | off_t |
16649710 ILT |
1349 | Symbol_table::finalize(unsigned int index, off_t off, off_t dynoff, |
1350 | size_t dyn_global_index, size_t dyncount, | |
1351 | Stringpool* pool) | |
54dc6425 | 1352 | { |
f6ce93d6 ILT |
1353 | off_t ret; |
1354 | ||
a3ad94ed | 1355 | gold_assert(index != 0); |
c06b7b0b ILT |
1356 | this->first_global_index_ = index; |
1357 | ||
16649710 ILT |
1358 | this->dynamic_offset_ = dynoff; |
1359 | this->first_dynamic_global_index_ = dyn_global_index; | |
1360 | this->dynamic_count_ = dyncount; | |
1361 | ||
9025d29d ILT |
1362 | if (parameters->get_size() == 32) |
1363 | { | |
1364 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
1365 | ret = this->sized_finalize<32>(index, off, pool); | |
1366 | #else | |
1367 | gold_unreachable(); | |
1368 | #endif | |
1369 | } | |
1370 | else if (parameters->get_size() == 64) | |
1371 | { | |
1372 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
1373 | ret = this->sized_finalize<64>(index, off, pool); | |
1374 | #else | |
1375 | gold_unreachable(); | |
1376 | #endif | |
1377 | } | |
61ba1cf9 | 1378 | else |
a3ad94ed | 1379 | gold_unreachable(); |
f6ce93d6 ILT |
1380 | |
1381 | // Now that we have the final symbol table, we can reliably note | |
1382 | // which symbols should get warnings. | |
1383 | this->warnings_.note_warnings(this); | |
1384 | ||
1385 | return ret; | |
75f65a3e ILT |
1386 | } |
1387 | ||
ead1e424 ILT |
1388 | // Set the final value for all the symbols. This is called after |
1389 | // Layout::finalize, so all the output sections have their final | |
1390 | // address. | |
75f65a3e ILT |
1391 | |
1392 | template<int size> | |
1393 | off_t | |
c06b7b0b | 1394 | Symbol_table::sized_finalize(unsigned index, off_t off, Stringpool* pool) |
75f65a3e | 1395 | { |
ead1e424 | 1396 | off = align_address(off, size >> 3); |
75f65a3e ILT |
1397 | this->offset_ = off; |
1398 | ||
c06b7b0b ILT |
1399 | size_t orig_index = index; |
1400 | ||
75f65a3e | 1401 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1402 | for (Symbol_table_type::iterator p = this->table_.begin(); |
1403 | p != this->table_.end(); | |
1404 | ++p) | |
54dc6425 | 1405 | { |
75f65a3e | 1406 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 1407 | |
75f65a3e | 1408 | // FIXME: Here we need to decide which symbols should go into |
a3ad94ed ILT |
1409 | // the output file, based on --strip. |
1410 | ||
1411 | // The default version of a symbol may appear twice in the | |
1412 | // symbol table. We only need to finalize it once. | |
1413 | if (sym->has_symtab_index()) | |
1414 | continue; | |
75f65a3e | 1415 | |
008db82e ILT |
1416 | if (!sym->in_reg()) |
1417 | { | |
1418 | gold_assert(!sym->has_symtab_index()); | |
1419 | sym->set_symtab_index(-1U); | |
1420 | gold_assert(sym->dynsym_index() == -1U); | |
1421 | continue; | |
1422 | } | |
1423 | ||
ead1e424 | 1424 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 1425 | |
ead1e424 | 1426 | switch (sym->source()) |
75f65a3e | 1427 | { |
ead1e424 ILT |
1428 | case Symbol::FROM_OBJECT: |
1429 | { | |
16649710 | 1430 | unsigned int shndx = sym->shndx(); |
ead1e424 ILT |
1431 | |
1432 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1433 | if (shndx >= elfcpp::SHN_LORESERVE |
1434 | && shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1435 | { |
75f2446e ILT |
1436 | gold_error(_("%s: unsupported symbol section 0x%x"), |
1437 | sym->name(), shndx); | |
1438 | shndx = elfcpp::SHN_UNDEF; | |
ead1e424 ILT |
1439 | } |
1440 | ||
f6ce93d6 ILT |
1441 | Object* symobj = sym->object(); |
1442 | if (symobj->is_dynamic()) | |
1443 | { | |
1444 | value = 0; | |
16649710 | 1445 | shndx = elfcpp::SHN_UNDEF; |
f6ce93d6 | 1446 | } |
16649710 | 1447 | else if (shndx == elfcpp::SHN_UNDEF) |
ead1e424 | 1448 | value = 0; |
16649710 | 1449 | else if (shndx == elfcpp::SHN_ABS) |
ead1e424 ILT |
1450 | value = sym->value(); |
1451 | else | |
1452 | { | |
f6ce93d6 | 1453 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 1454 | off_t secoff; |
16649710 | 1455 | Output_section* os = relobj->output_section(shndx, &secoff); |
ead1e424 ILT |
1456 | |
1457 | if (os == NULL) | |
1458 | { | |
c06b7b0b | 1459 | sym->set_symtab_index(-1U); |
16649710 | 1460 | gold_assert(sym->dynsym_index() == -1U); |
ead1e424 ILT |
1461 | continue; |
1462 | } | |
1463 | ||
1464 | value = sym->value() + os->address() + secoff; | |
1465 | } | |
1466 | } | |
1467 | break; | |
1468 | ||
1469 | case Symbol::IN_OUTPUT_DATA: | |
1470 | { | |
1471 | Output_data* od = sym->output_data(); | |
1472 | value = sym->value() + od->address(); | |
1473 | if (sym->offset_is_from_end()) | |
1474 | value += od->data_size(); | |
1475 | } | |
1476 | break; | |
1477 | ||
1478 | case Symbol::IN_OUTPUT_SEGMENT: | |
1479 | { | |
1480 | Output_segment* os = sym->output_segment(); | |
1481 | value = sym->value() + os->vaddr(); | |
1482 | switch (sym->offset_base()) | |
1483 | { | |
1484 | case Symbol::SEGMENT_START: | |
1485 | break; | |
1486 | case Symbol::SEGMENT_END: | |
1487 | value += os->memsz(); | |
1488 | break; | |
1489 | case Symbol::SEGMENT_BSS: | |
1490 | value += os->filesz(); | |
1491 | break; | |
1492 | default: | |
a3ad94ed | 1493 | gold_unreachable(); |
ead1e424 ILT |
1494 | } |
1495 | } | |
1496 | break; | |
1497 | ||
1498 | case Symbol::CONSTANT: | |
1499 | value = sym->value(); | |
1500 | break; | |
1501 | ||
1502 | default: | |
a3ad94ed | 1503 | gold_unreachable(); |
54dc6425 | 1504 | } |
ead1e424 ILT |
1505 | |
1506 | sym->set_value(value); | |
9e2dcb77 ILT |
1507 | |
1508 | if (parameters->strip_all()) | |
1509 | sym->set_symtab_index(-1U); | |
1510 | else | |
1511 | { | |
1512 | sym->set_symtab_index(index); | |
cfd73a4e | 1513 | pool->add(sym->name(), false, NULL); |
9e2dcb77 ILT |
1514 | ++index; |
1515 | off += sym_size; | |
1516 | } | |
54dc6425 | 1517 | } |
75f65a3e | 1518 | |
c06b7b0b | 1519 | this->output_count_ = index - orig_index; |
61ba1cf9 | 1520 | |
75f65a3e | 1521 | return off; |
54dc6425 ILT |
1522 | } |
1523 | ||
61ba1cf9 ILT |
1524 | // Write out the global symbols. |
1525 | ||
1526 | void | |
9a2d6984 ILT |
1527 | Symbol_table::write_globals(const Input_objects* input_objects, |
1528 | const Stringpool* sympool, | |
16649710 | 1529 | const Stringpool* dynpool, Output_file* of) const |
61ba1cf9 | 1530 | { |
9025d29d | 1531 | if (parameters->get_size() == 32) |
61ba1cf9 | 1532 | { |
9025d29d ILT |
1533 | if (parameters->is_big_endian()) |
1534 | { | |
1535 | #ifdef HAVE_TARGET_32_BIG | |
9a2d6984 ILT |
1536 | this->sized_write_globals<32, true>(input_objects, sympool, |
1537 | dynpool, of); | |
9025d29d ILT |
1538 | #else |
1539 | gold_unreachable(); | |
1540 | #endif | |
1541 | } | |
61ba1cf9 | 1542 | else |
9025d29d ILT |
1543 | { |
1544 | #ifdef HAVE_TARGET_32_LITTLE | |
9a2d6984 ILT |
1545 | this->sized_write_globals<32, false>(input_objects, sympool, |
1546 | dynpool, of); | |
9025d29d ILT |
1547 | #else |
1548 | gold_unreachable(); | |
1549 | #endif | |
1550 | } | |
61ba1cf9 | 1551 | } |
9025d29d | 1552 | else if (parameters->get_size() == 64) |
61ba1cf9 | 1553 | { |
9025d29d ILT |
1554 | if (parameters->is_big_endian()) |
1555 | { | |
1556 | #ifdef HAVE_TARGET_64_BIG | |
9a2d6984 ILT |
1557 | this->sized_write_globals<64, true>(input_objects, sympool, |
1558 | dynpool, of); | |
9025d29d ILT |
1559 | #else |
1560 | gold_unreachable(); | |
1561 | #endif | |
1562 | } | |
61ba1cf9 | 1563 | else |
9025d29d ILT |
1564 | { |
1565 | #ifdef HAVE_TARGET_64_LITTLE | |
9a2d6984 ILT |
1566 | this->sized_write_globals<64, false>(input_objects, sympool, |
1567 | dynpool, of); | |
9025d29d ILT |
1568 | #else |
1569 | gold_unreachable(); | |
1570 | #endif | |
1571 | } | |
61ba1cf9 ILT |
1572 | } |
1573 | else | |
a3ad94ed | 1574 | gold_unreachable(); |
61ba1cf9 ILT |
1575 | } |
1576 | ||
1577 | // Write out the global symbols. | |
1578 | ||
1579 | template<int size, bool big_endian> | |
1580 | void | |
9a2d6984 | 1581 | Symbol_table::sized_write_globals(const Input_objects* input_objects, |
61ba1cf9 | 1582 | const Stringpool* sympool, |
16649710 | 1583 | const Stringpool* dynpool, |
61ba1cf9 ILT |
1584 | Output_file* of) const |
1585 | { | |
9a2d6984 ILT |
1586 | const Target* const target = input_objects->target(); |
1587 | ||
61ba1cf9 | 1588 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1589 | unsigned int index = this->first_global_index_; |
1590 | const off_t oview_size = this->output_count_ * sym_size; | |
16649710 ILT |
1591 | unsigned char* const psyms = of->get_output_view(this->offset_, oview_size); |
1592 | ||
1593 | unsigned int dynamic_count = this->dynamic_count_; | |
1594 | off_t dynamic_size = dynamic_count * sym_size; | |
1595 | unsigned int first_dynamic_global_index = this->first_dynamic_global_index_; | |
1596 | unsigned char* dynamic_view; | |
1597 | if (this->dynamic_offset_ == 0) | |
1598 | dynamic_view = NULL; | |
1599 | else | |
1600 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 1601 | |
61ba1cf9 ILT |
1602 | unsigned char* ps = psyms; |
1603 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1604 | p != this->table_.end(); | |
1605 | ++p) | |
1606 | { | |
1607 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1608 | ||
9a2d6984 ILT |
1609 | // Possibly warn about unresolved symbols in shared libraries. |
1610 | this->warn_about_undefined_dynobj_symbol(input_objects, sym); | |
e2827e5f | 1611 | |
a3ad94ed | 1612 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
1613 | unsigned int dynsym_index; |
1614 | if (dynamic_view == NULL) | |
1615 | dynsym_index = -1U; | |
1616 | else | |
1617 | dynsym_index = sym->dynsym_index(); | |
1618 | ||
1619 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
1620 | { |
1621 | // This symbol is not included in the output file. | |
1622 | continue; | |
1623 | } | |
16649710 ILT |
1624 | |
1625 | if (sym_index == index) | |
1626 | ++index; | |
1627 | else if (sym_index != -1U) | |
a3ad94ed ILT |
1628 | { |
1629 | // We have already seen this symbol, because it has a | |
1630 | // default version. | |
1631 | gold_assert(sym_index < index); | |
16649710 ILT |
1632 | if (dynsym_index == -1U) |
1633 | continue; | |
1634 | sym_index = -1U; | |
a3ad94ed | 1635 | } |
c06b7b0b | 1636 | |
ead1e424 | 1637 | unsigned int shndx; |
ab5c9e90 | 1638 | typename elfcpp::Elf_types<32>::Elf_Addr value = sym->value(); |
ead1e424 ILT |
1639 | switch (sym->source()) |
1640 | { | |
1641 | case Symbol::FROM_OBJECT: | |
1642 | { | |
16649710 | 1643 | unsigned int in_shndx = sym->shndx(); |
ead1e424 ILT |
1644 | |
1645 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1646 | if (in_shndx >= elfcpp::SHN_LORESERVE |
1647 | && in_shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1648 | { |
75f2446e ILT |
1649 | gold_error(_("%s: unsupported symbol section 0x%x"), |
1650 | sym->name(), in_shndx); | |
1651 | shndx = in_shndx; | |
f6ce93d6 | 1652 | } |
ead1e424 ILT |
1653 | else |
1654 | { | |
75f2446e ILT |
1655 | Object* symobj = sym->object(); |
1656 | if (symobj->is_dynamic()) | |
1657 | { | |
1658 | if (sym->needs_dynsym_value()) | |
1659 | value = target->dynsym_value(sym); | |
1660 | shndx = elfcpp::SHN_UNDEF; | |
1661 | } | |
1662 | else if (in_shndx == elfcpp::SHN_UNDEF | |
1663 | || in_shndx == elfcpp::SHN_ABS) | |
1664 | shndx = in_shndx; | |
1665 | else | |
1666 | { | |
1667 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
1668 | off_t secoff; | |
1669 | Output_section* os = relobj->output_section(in_shndx, | |
1670 | &secoff); | |
1671 | gold_assert(os != NULL); | |
1672 | shndx = os->out_shndx(); | |
1673 | } | |
ead1e424 ILT |
1674 | } |
1675 | } | |
1676 | break; | |
1677 | ||
1678 | case Symbol::IN_OUTPUT_DATA: | |
1679 | shndx = sym->output_data()->out_shndx(); | |
1680 | break; | |
1681 | ||
1682 | case Symbol::IN_OUTPUT_SEGMENT: | |
1683 | shndx = elfcpp::SHN_ABS; | |
1684 | break; | |
1685 | ||
1686 | case Symbol::CONSTANT: | |
1687 | shndx = elfcpp::SHN_ABS; | |
1688 | break; | |
1689 | ||
1690 | default: | |
a3ad94ed | 1691 | gold_unreachable(); |
ead1e424 | 1692 | } |
61ba1cf9 | 1693 | |
16649710 ILT |
1694 | if (sym_index != -1U) |
1695 | { | |
6a469986 | 1696 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1697 | sym, sym->value(), shndx, sympool, ps |
6a469986 | 1698 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 ILT |
1699 | ps += sym_size; |
1700 | } | |
61ba1cf9 | 1701 | |
16649710 ILT |
1702 | if (dynsym_index != -1U) |
1703 | { | |
1704 | dynsym_index -= first_dynamic_global_index; | |
1705 | gold_assert(dynsym_index < dynamic_count); | |
1706 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
6a469986 | 1707 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1708 | sym, value, shndx, dynpool, pd |
6a469986 | 1709 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 | 1710 | } |
61ba1cf9 ILT |
1711 | } |
1712 | ||
a3ad94ed | 1713 | gold_assert(ps - psyms == oview_size); |
c06b7b0b ILT |
1714 | |
1715 | of->write_output_view(this->offset_, oview_size, psyms); | |
16649710 ILT |
1716 | if (dynamic_view != NULL) |
1717 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
1718 | } | |
1719 | ||
1720 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
1721 | // strtab holding the name. | |
1722 | ||
1723 | template<int size, bool big_endian> | |
1724 | void | |
ab5c9e90 ILT |
1725 | Symbol_table::sized_write_symbol( |
1726 | Sized_symbol<size>* sym, | |
1727 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1728 | unsigned int shndx, | |
1729 | const Stringpool* pool, | |
1730 | unsigned char* p | |
1731 | ACCEPT_SIZE_ENDIAN) const | |
16649710 ILT |
1732 | { |
1733 | elfcpp::Sym_write<size, big_endian> osym(p); | |
1734 | osym.put_st_name(pool->get_offset(sym->name())); | |
ab5c9e90 | 1735 | osym.put_st_value(value); |
16649710 ILT |
1736 | osym.put_st_size(sym->symsize()); |
1737 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
1738 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); | |
1739 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1740 | } |
1741 | ||
9a2d6984 ILT |
1742 | // Check for unresolved symbols in shared libraries. This is |
1743 | // controlled by the --allow-shlib-undefined option. | |
1744 | ||
1745 | // We only warn about libraries for which we have seen all the | |
1746 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
1747 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
1748 | // entry, we aren't going to be able to reliably report whether the | |
1749 | // symbol is undefined. | |
1750 | ||
1751 | // We also don't warn about libraries found in the system library | |
1752 | // directory (the directory were we find libc.so); we assume that | |
1753 | // those libraries are OK. This heuristic avoids problems in | |
1754 | // GNU/Linux, in which -ldl can have undefined references satisfied by | |
1755 | // ld-linux.so. | |
1756 | ||
1757 | inline void | |
1758 | Symbol_table::warn_about_undefined_dynobj_symbol( | |
1759 | const Input_objects* input_objects, | |
1760 | Symbol* sym) const | |
1761 | { | |
1762 | if (sym->source() == Symbol::FROM_OBJECT | |
1763 | && sym->object()->is_dynamic() | |
1764 | && sym->shndx() == elfcpp::SHN_UNDEF | |
1765 | && sym->binding() != elfcpp::STB_WEAK | |
1766 | && !parameters->allow_shlib_undefined() | |
1767 | && !input_objects->target()->is_defined_by_abi(sym) | |
1768 | && !input_objects->found_in_system_library_directory(sym->object())) | |
1769 | { | |
1770 | // A very ugly cast. | |
1771 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
1772 | if (!dynobj->has_unknown_needed_entries()) | |
1773 | gold_error(_("%s: undefined reference to '%s'"), | |
1774 | sym->object()->name().c_str(), sym->name()); | |
1775 | } | |
1776 | } | |
1777 | ||
a3ad94ed ILT |
1778 | // Write out a section symbol. Return the update offset. |
1779 | ||
1780 | void | |
9025d29d | 1781 | Symbol_table::write_section_symbol(const Output_section *os, |
a3ad94ed ILT |
1782 | Output_file* of, |
1783 | off_t offset) const | |
1784 | { | |
9025d29d | 1785 | if (parameters->get_size() == 32) |
a3ad94ed | 1786 | { |
9025d29d ILT |
1787 | if (parameters->is_big_endian()) |
1788 | { | |
1789 | #ifdef HAVE_TARGET_32_BIG | |
1790 | this->sized_write_section_symbol<32, true>(os, of, offset); | |
1791 | #else | |
1792 | gold_unreachable(); | |
1793 | #endif | |
1794 | } | |
a3ad94ed | 1795 | else |
9025d29d ILT |
1796 | { |
1797 | #ifdef HAVE_TARGET_32_LITTLE | |
1798 | this->sized_write_section_symbol<32, false>(os, of, offset); | |
1799 | #else | |
1800 | gold_unreachable(); | |
1801 | #endif | |
1802 | } | |
a3ad94ed | 1803 | } |
9025d29d | 1804 | else if (parameters->get_size() == 64) |
a3ad94ed | 1805 | { |
9025d29d ILT |
1806 | if (parameters->is_big_endian()) |
1807 | { | |
1808 | #ifdef HAVE_TARGET_64_BIG | |
1809 | this->sized_write_section_symbol<64, true>(os, of, offset); | |
1810 | #else | |
1811 | gold_unreachable(); | |
1812 | #endif | |
1813 | } | |
a3ad94ed | 1814 | else |
9025d29d ILT |
1815 | { |
1816 | #ifdef HAVE_TARGET_64_LITTLE | |
1817 | this->sized_write_section_symbol<64, false>(os, of, offset); | |
1818 | #else | |
1819 | gold_unreachable(); | |
1820 | #endif | |
1821 | } | |
a3ad94ed ILT |
1822 | } |
1823 | else | |
1824 | gold_unreachable(); | |
1825 | } | |
1826 | ||
1827 | // Write out a section symbol, specialized for size and endianness. | |
1828 | ||
1829 | template<int size, bool big_endian> | |
1830 | void | |
1831 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
1832 | Output_file* of, | |
1833 | off_t offset) const | |
1834 | { | |
1835 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1836 | ||
1837 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
1838 | ||
1839 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
1840 | osym.put_st_name(0); | |
1841 | osym.put_st_value(os->address()); | |
1842 | osym.put_st_size(0); | |
1843 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
1844 | elfcpp::STT_SECTION)); | |
1845 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
1846 | osym.put_st_shndx(os->out_shndx()); | |
1847 | ||
1848 | of->write_output_view(offset, sym_size, pov); | |
1849 | } | |
1850 | ||
70e654ba ILT |
1851 | // Check candidate_odr_violations_ to find symbols with the same name |
1852 | // but apparently different definitions (different source-file/line-no). | |
1853 | ||
1854 | void | |
78f15696 | 1855 | Symbol_table::detect_odr_violations(const char* output_file_name) const |
70e654ba ILT |
1856 | { |
1857 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
1858 | it != candidate_odr_violations_.end(); | |
1859 | ++it) | |
1860 | { | |
1861 | const char* symbol_name = it->first; | |
1862 | // We use a sorted set so the output is deterministic. | |
1863 | std::set<std::string> line_nums; | |
1864 | ||
1865 | Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator | |
1866 | locs; | |
1867 | for (locs = it->second.begin(); locs != it->second.end(); ++locs) | |
1868 | { | |
1869 | // We need to lock the object in order to read it. This | |
1870 | // means that we can not run inside a Task. If we want to | |
1871 | // run this in a Task for better performance, we will need | |
1872 | // one Task for object, plus appropriate locking to ensure | |
1873 | // that we don't conflict with other uses of the object. | |
1874 | locs->object->lock(); | |
a55ce7fe ILT |
1875 | std::string lineno = Dwarf_line_info::one_addr2line( |
1876 | locs->object, locs->shndx, locs->offset); | |
70e654ba | 1877 | locs->object->unlock(); |
70e654ba ILT |
1878 | if (!lineno.empty()) |
1879 | line_nums.insert(lineno); | |
1880 | } | |
1881 | ||
1882 | if (line_nums.size() > 1) | |
1883 | { | |
78f15696 ILT |
1884 | gold_warning(_("while linking %s: symbol %s defined in multiple " |
1885 | "places (possible ODR violation):"), | |
1886 | output_file_name, symbol_name); | |
70e654ba ILT |
1887 | for (std::set<std::string>::const_iterator it2 = line_nums.begin(); |
1888 | it2 != line_nums.end(); | |
1889 | ++it2) | |
1890 | fprintf(stderr, " %s\n", it2->c_str()); | |
1891 | } | |
1892 | } | |
1893 | } | |
1894 | ||
f6ce93d6 ILT |
1895 | // Warnings functions. |
1896 | ||
1897 | // Add a new warning. | |
1898 | ||
1899 | void | |
1900 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
1901 | unsigned int shndx) | |
1902 | { | |
1903 | name = symtab->canonicalize_name(name); | |
1904 | this->warnings_[name].set(obj, shndx); | |
1905 | } | |
1906 | ||
1907 | // Look through the warnings and mark the symbols for which we should | |
1908 | // warn. This is called during Layout::finalize when we know the | |
1909 | // sources for all the symbols. | |
1910 | ||
1911 | void | |
1912 | Warnings::note_warnings(Symbol_table* symtab) | |
1913 | { | |
1914 | for (Warning_table::iterator p = this->warnings_.begin(); | |
1915 | p != this->warnings_.end(); | |
1916 | ++p) | |
1917 | { | |
1918 | Symbol* sym = symtab->lookup(p->first, NULL); | |
1919 | if (sym != NULL | |
1920 | && sym->source() == Symbol::FROM_OBJECT | |
1921 | && sym->object() == p->second.object) | |
1922 | { | |
1923 | sym->set_has_warning(); | |
1924 | ||
1925 | // Read the section contents to get the warning text. It | |
1926 | // would be nicer if we only did this if we have to actually | |
1927 | // issue a warning. Unfortunately, warnings are issued as | |
1928 | // we relocate sections. That means that we can not lock | |
1929 | // the object then, as we might try to issue the same | |
1930 | // warning multiple times simultaneously. | |
645f8123 ILT |
1931 | { |
1932 | Task_locker_obj<Object> tl(*p->second.object); | |
1933 | const unsigned char* c; | |
1934 | off_t len; | |
9eb9fa57 ILT |
1935 | c = p->second.object->section_contents(p->second.shndx, &len, |
1936 | false); | |
645f8123 ILT |
1937 | p->second.set_text(reinterpret_cast<const char*>(c), len); |
1938 | } | |
f6ce93d6 ILT |
1939 | } |
1940 | } | |
1941 | } | |
1942 | ||
1943 | // Issue a warning. This is called when we see a relocation against a | |
1944 | // symbol for which has a warning. | |
1945 | ||
75f2446e | 1946 | template<int size, bool big_endian> |
f6ce93d6 | 1947 | void |
75f2446e ILT |
1948 | Warnings::issue_warning(const Symbol* sym, |
1949 | const Relocate_info<size, big_endian>* relinfo, | |
1950 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 1951 | { |
a3ad94ed | 1952 | gold_assert(sym->has_warning()); |
f6ce93d6 | 1953 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 1954 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
1955 | gold_warning_at_location(relinfo, relnum, reloffset, |
1956 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
1957 | } |
1958 | ||
14bfc3f5 ILT |
1959 | // Instantiate the templates we need. We could use the configure |
1960 | // script to restrict this to only the ones needed for implemented | |
1961 | // targets. | |
1962 | ||
193a53d9 | 1963 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
1964 | template |
1965 | void | |
193a53d9 ILT |
1966 | Symbol_table::add_from_relobj<32, false>( |
1967 | Sized_relobj<32, false>* relobj, | |
f6ce93d6 | 1968 | const unsigned char* syms, |
14bfc3f5 ILT |
1969 | size_t count, |
1970 | const char* sym_names, | |
1971 | size_t sym_name_size, | |
730cdc88 | 1972 | Sized_relobj<32, true>::Symbols* sympointers); |
193a53d9 | 1973 | #endif |
14bfc3f5 | 1974 | |
193a53d9 | 1975 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
1976 | template |
1977 | void | |
193a53d9 ILT |
1978 | Symbol_table::add_from_relobj<32, true>( |
1979 | Sized_relobj<32, true>* relobj, | |
f6ce93d6 | 1980 | const unsigned char* syms, |
14bfc3f5 ILT |
1981 | size_t count, |
1982 | const char* sym_names, | |
1983 | size_t sym_name_size, | |
730cdc88 | 1984 | Sized_relobj<32, false>::Symbols* sympointers); |
193a53d9 | 1985 | #endif |
14bfc3f5 | 1986 | |
193a53d9 | 1987 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
1988 | template |
1989 | void | |
193a53d9 ILT |
1990 | Symbol_table::add_from_relobj<64, false>( |
1991 | Sized_relobj<64, false>* relobj, | |
f6ce93d6 | 1992 | const unsigned char* syms, |
14bfc3f5 ILT |
1993 | size_t count, |
1994 | const char* sym_names, | |
1995 | size_t sym_name_size, | |
730cdc88 | 1996 | Sized_relobj<64, true>::Symbols* sympointers); |
193a53d9 | 1997 | #endif |
14bfc3f5 | 1998 | |
193a53d9 | 1999 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
2000 | template |
2001 | void | |
193a53d9 ILT |
2002 | Symbol_table::add_from_relobj<64, true>( |
2003 | Sized_relobj<64, true>* relobj, | |
f6ce93d6 | 2004 | const unsigned char* syms, |
14bfc3f5 ILT |
2005 | size_t count, |
2006 | const char* sym_names, | |
2007 | size_t sym_name_size, | |
730cdc88 | 2008 | Sized_relobj<64, false>::Symbols* sympointers); |
193a53d9 | 2009 | #endif |
14bfc3f5 | 2010 | |
193a53d9 | 2011 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
2012 | template |
2013 | void | |
193a53d9 ILT |
2014 | Symbol_table::add_from_dynobj<32, false>( |
2015 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
2016 | const unsigned char* syms, |
2017 | size_t count, | |
2018 | const char* sym_names, | |
2019 | size_t sym_name_size, | |
2020 | const unsigned char* versym, | |
2021 | size_t versym_size, | |
2022 | const std::vector<const char*>* version_map); | |
193a53d9 | 2023 | #endif |
dbe717ef | 2024 | |
193a53d9 | 2025 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
2026 | template |
2027 | void | |
193a53d9 ILT |
2028 | Symbol_table::add_from_dynobj<32, true>( |
2029 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
2030 | const unsigned char* syms, |
2031 | size_t count, | |
2032 | const char* sym_names, | |
2033 | size_t sym_name_size, | |
2034 | const unsigned char* versym, | |
2035 | size_t versym_size, | |
2036 | const std::vector<const char*>* version_map); | |
193a53d9 | 2037 | #endif |
dbe717ef | 2038 | |
193a53d9 | 2039 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
2040 | template |
2041 | void | |
193a53d9 ILT |
2042 | Symbol_table::add_from_dynobj<64, false>( |
2043 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
2044 | const unsigned char* syms, |
2045 | size_t count, | |
2046 | const char* sym_names, | |
2047 | size_t sym_name_size, | |
2048 | const unsigned char* versym, | |
2049 | size_t versym_size, | |
2050 | const std::vector<const char*>* version_map); | |
193a53d9 | 2051 | #endif |
dbe717ef | 2052 | |
193a53d9 | 2053 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
2054 | template |
2055 | void | |
193a53d9 ILT |
2056 | Symbol_table::add_from_dynobj<64, true>( |
2057 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
2058 | const unsigned char* syms, |
2059 | size_t count, | |
2060 | const char* sym_names, | |
2061 | size_t sym_name_size, | |
2062 | const unsigned char* versym, | |
2063 | size_t versym_size, | |
2064 | const std::vector<const char*>* version_map); | |
193a53d9 | 2065 | #endif |
dbe717ef | 2066 | |
46fe1623 ILT |
2067 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2068 | template | |
2069 | void | |
2070 | Symbol_table::define_with_copy_reloc<32>(const Target* target, | |
2071 | Sized_symbol<32>* sym, | |
2072 | Output_data* posd, uint64_t value); | |
2073 | #endif | |
2074 | ||
2075 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2076 | template | |
2077 | void | |
2078 | Symbol_table::define_with_copy_reloc<64>(const Target* target, | |
2079 | Sized_symbol<64>* sym, | |
2080 | Output_data* posd, uint64_t value); | |
2081 | #endif | |
2082 | ||
75f2446e ILT |
2083 | #ifdef HAVE_TARGET_32_LITTLE |
2084 | template | |
2085 | void | |
2086 | Warnings::issue_warning<32, false>(const Symbol* sym, | |
2087 | const Relocate_info<32, false>* relinfo, | |
2088 | size_t relnum, off_t reloffset) const; | |
2089 | #endif | |
2090 | ||
2091 | #ifdef HAVE_TARGET_32_BIG | |
2092 | template | |
2093 | void | |
2094 | Warnings::issue_warning<32, true>(const Symbol* sym, | |
2095 | const Relocate_info<32, true>* relinfo, | |
2096 | size_t relnum, off_t reloffset) const; | |
2097 | #endif | |
2098 | ||
2099 | #ifdef HAVE_TARGET_64_LITTLE | |
2100 | template | |
2101 | void | |
2102 | Warnings::issue_warning<64, false>(const Symbol* sym, | |
2103 | const Relocate_info<64, false>* relinfo, | |
2104 | size_t relnum, off_t reloffset) const; | |
2105 | #endif | |
2106 | ||
2107 | #ifdef HAVE_TARGET_64_BIG | |
2108 | template | |
2109 | void | |
2110 | Warnings::issue_warning<64, true>(const Symbol* sym, | |
2111 | const Relocate_info<64, true>* relinfo, | |
2112 | size_t relnum, off_t reloffset) const; | |
2113 | #endif | |
2114 | ||
14bfc3f5 | 2115 | } // End namespace gold. |