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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> | |
a2b1aa12 | 29 | #include "demangle.h" |
14bfc3f5 ILT |
30 | |
31 | #include "object.h" | |
70e654ba | 32 | #include "dwarf_reader.h" |
dbe717ef | 33 | #include "dynobj.h" |
75f65a3e | 34 | #include "output.h" |
61ba1cf9 | 35 | #include "target.h" |
645f8123 | 36 | #include "workqueue.h" |
14bfc3f5 ILT |
37 | #include "symtab.h" |
38 | ||
39 | namespace gold | |
40 | { | |
41 | ||
42 | // Class Symbol. | |
43 | ||
ead1e424 ILT |
44 | // Initialize fields in Symbol. This initializes everything except u_ |
45 | // and source_. | |
14bfc3f5 | 46 | |
14bfc3f5 | 47 | void |
ead1e424 ILT |
48 | Symbol::init_fields(const char* name, const char* version, |
49 | elfcpp::STT type, elfcpp::STB binding, | |
50 | elfcpp::STV visibility, unsigned char nonvis) | |
14bfc3f5 ILT |
51 | { |
52 | this->name_ = name; | |
53 | this->version_ = version; | |
c06b7b0b ILT |
54 | this->symtab_index_ = 0; |
55 | this->dynsym_index_ = 0; | |
ead1e424 | 56 | this->got_offset_ = 0; |
f4151f89 | 57 | this->plt_offset_ = 0; |
ead1e424 ILT |
58 | this->type_ = type; |
59 | this->binding_ = binding; | |
60 | this->visibility_ = visibility; | |
61 | this->nonvis_ = nonvis; | |
62 | this->is_target_special_ = false; | |
1564db8d ILT |
63 | this->is_def_ = false; |
64 | this->is_forwarder_ = false; | |
aeddab66 | 65 | this->has_alias_ = false; |
c06b7b0b | 66 | this->needs_dynsym_entry_ = false; |
008db82e | 67 | this->in_reg_ = false; |
ead1e424 ILT |
68 | this->in_dyn_ = false; |
69 | this->has_got_offset_ = false; | |
f4151f89 | 70 | this->has_plt_offset_ = false; |
f6ce93d6 | 71 | this->has_warning_ = false; |
46fe1623 | 72 | this->is_copied_from_dynobj_ = false; |
ead1e424 ILT |
73 | } |
74 | ||
a2b1aa12 ILT |
75 | // Return the demangled version of the symbol's name, but only |
76 | // if the --demangle flag was set. | |
77 | ||
78 | static std::string | |
79 | demangle(const char* name) | |
80 | { | |
ff541f30 ILT |
81 | if (!parameters->demangle()) |
82 | return name; | |
83 | ||
a2b1aa12 ILT |
84 | // cplus_demangle allocates memory for the result it returns, |
85 | // and returns NULL if the name is already demangled. | |
86 | char* demangled_name = cplus_demangle(name, DMGL_ANSI | DMGL_PARAMS); | |
87 | if (demangled_name == NULL) | |
88 | return name; | |
89 | ||
90 | std::string retval(demangled_name); | |
91 | free(demangled_name); | |
92 | return retval; | |
93 | } | |
94 | ||
95 | std::string | |
96 | Symbol::demangled_name() const | |
97 | { | |
ff541f30 | 98 | return demangle(this->name()); |
a2b1aa12 ILT |
99 | } |
100 | ||
ead1e424 ILT |
101 | // Initialize the fields in the base class Symbol for SYM in OBJECT. |
102 | ||
103 | template<int size, bool big_endian> | |
104 | void | |
105 | Symbol::init_base(const char* name, const char* version, Object* object, | |
106 | const elfcpp::Sym<size, big_endian>& sym) | |
107 | { | |
108 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), | |
109 | sym.get_st_visibility(), sym.get_st_nonvis()); | |
110 | this->u_.from_object.object = object; | |
111 | // FIXME: Handle SHN_XINDEX. | |
16649710 | 112 | this->u_.from_object.shndx = sym.get_st_shndx(); |
ead1e424 | 113 | this->source_ = FROM_OBJECT; |
008db82e | 114 | this->in_reg_ = !object->is_dynamic(); |
1564db8d | 115 | this->in_dyn_ = object->is_dynamic(); |
14bfc3f5 ILT |
116 | } |
117 | ||
ead1e424 ILT |
118 | // Initialize the fields in the base class Symbol for a symbol defined |
119 | // in an Output_data. | |
120 | ||
121 | void | |
122 | Symbol::init_base(const char* name, Output_data* od, elfcpp::STT type, | |
123 | elfcpp::STB binding, elfcpp::STV visibility, | |
124 | unsigned char nonvis, bool offset_is_from_end) | |
125 | { | |
126 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
127 | this->u_.in_output_data.output_data = od; | |
128 | this->u_.in_output_data.offset_is_from_end = offset_is_from_end; | |
129 | this->source_ = IN_OUTPUT_DATA; | |
008db82e | 130 | this->in_reg_ = true; |
ead1e424 ILT |
131 | } |
132 | ||
133 | // Initialize the fields in the base class Symbol for a symbol defined | |
134 | // in an Output_segment. | |
135 | ||
136 | void | |
137 | Symbol::init_base(const char* name, Output_segment* os, elfcpp::STT type, | |
138 | elfcpp::STB binding, elfcpp::STV visibility, | |
139 | unsigned char nonvis, Segment_offset_base offset_base) | |
140 | { | |
141 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
142 | this->u_.in_output_segment.output_segment = os; | |
143 | this->u_.in_output_segment.offset_base = offset_base; | |
144 | this->source_ = IN_OUTPUT_SEGMENT; | |
008db82e | 145 | this->in_reg_ = true; |
ead1e424 ILT |
146 | } |
147 | ||
148 | // Initialize the fields in the base class Symbol for a symbol defined | |
149 | // as a constant. | |
150 | ||
151 | void | |
152 | Symbol::init_base(const char* name, elfcpp::STT type, | |
153 | elfcpp::STB binding, elfcpp::STV visibility, | |
154 | unsigned char nonvis) | |
155 | { | |
156 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
157 | this->source_ = CONSTANT; | |
008db82e | 158 | this->in_reg_ = true; |
ead1e424 ILT |
159 | } |
160 | ||
c7912668 ILT |
161 | // Allocate a common symbol in the base. |
162 | ||
163 | void | |
164 | Symbol::allocate_base_common(Output_data* od) | |
165 | { | |
166 | gold_assert(this->is_common()); | |
167 | this->source_ = IN_OUTPUT_DATA; | |
168 | this->u_.in_output_data.output_data = od; | |
169 | this->u_.in_output_data.offset_is_from_end = false; | |
170 | } | |
171 | ||
ead1e424 | 172 | // Initialize the fields in Sized_symbol for SYM in OBJECT. |
14bfc3f5 ILT |
173 | |
174 | template<int size> | |
175 | template<bool big_endian> | |
176 | void | |
177 | Sized_symbol<size>::init(const char* name, const char* version, Object* object, | |
178 | const elfcpp::Sym<size, big_endian>& sym) | |
179 | { | |
180 | this->init_base(name, version, object, sym); | |
181 | this->value_ = sym.get_st_value(); | |
ead1e424 ILT |
182 | this->symsize_ = sym.get_st_size(); |
183 | } | |
184 | ||
185 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
186 | // Output_data. | |
187 | ||
188 | template<int size> | |
189 | void | |
190 | Sized_symbol<size>::init(const char* name, Output_data* od, | |
191 | Value_type value, Size_type symsize, | |
192 | elfcpp::STT type, elfcpp::STB binding, | |
193 | elfcpp::STV visibility, unsigned char nonvis, | |
194 | bool offset_is_from_end) | |
195 | { | |
196 | this->init_base(name, od, type, binding, visibility, nonvis, | |
197 | offset_is_from_end); | |
198 | this->value_ = value; | |
199 | this->symsize_ = symsize; | |
200 | } | |
201 | ||
202 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
203 | // Output_segment. | |
204 | ||
205 | template<int size> | |
206 | void | |
207 | Sized_symbol<size>::init(const char* name, Output_segment* os, | |
208 | Value_type value, Size_type symsize, | |
209 | elfcpp::STT type, elfcpp::STB binding, | |
210 | elfcpp::STV visibility, unsigned char nonvis, | |
211 | Segment_offset_base offset_base) | |
212 | { | |
213 | this->init_base(name, os, type, binding, visibility, nonvis, offset_base); | |
214 | this->value_ = value; | |
215 | this->symsize_ = symsize; | |
216 | } | |
217 | ||
218 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
219 | // constant. | |
220 | ||
221 | template<int size> | |
222 | void | |
223 | Sized_symbol<size>::init(const char* name, Value_type value, Size_type symsize, | |
224 | elfcpp::STT type, elfcpp::STB binding, | |
225 | elfcpp::STV visibility, unsigned char nonvis) | |
226 | { | |
227 | this->init_base(name, type, binding, visibility, nonvis); | |
228 | this->value_ = value; | |
229 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
230 | } |
231 | ||
c7912668 ILT |
232 | // Allocate a common symbol. |
233 | ||
234 | template<int size> | |
235 | void | |
236 | Sized_symbol<size>::allocate_common(Output_data* od, Value_type value) | |
237 | { | |
238 | this->allocate_base_common(od); | |
239 | this->value_ = value; | |
240 | } | |
241 | ||
436ca963 ILT |
242 | // Return true if this symbol should be added to the dynamic symbol |
243 | // table. | |
244 | ||
245 | inline bool | |
246 | Symbol::should_add_dynsym_entry() const | |
247 | { | |
248 | // If the symbol is used by a dynamic relocation, we need to add it. | |
249 | if (this->needs_dynsym_entry()) | |
250 | return true; | |
251 | ||
252 | // If exporting all symbols or building a shared library, | |
253 | // and the symbol is defined in a regular object and is | |
254 | // externally visible, we need to add it. | |
255 | if ((parameters->export_dynamic() || parameters->output_is_shared()) | |
256 | && !this->is_from_dynobj() | |
257 | && this->is_externally_visible()) | |
258 | return true; | |
259 | ||
260 | return false; | |
261 | } | |
262 | ||
b3b74ddc ILT |
263 | // Return true if the final value of this symbol is known at link |
264 | // time. | |
265 | ||
266 | bool | |
267 | Symbol::final_value_is_known() const | |
268 | { | |
269 | // If we are not generating an executable, then no final values are | |
270 | // known, since they will change at runtime. | |
271 | if (!parameters->output_is_executable()) | |
272 | return false; | |
273 | ||
274 | // If the symbol is not from an object file, then it is defined, and | |
275 | // known. | |
276 | if (this->source_ != FROM_OBJECT) | |
277 | return true; | |
278 | ||
279 | // If the symbol is from a dynamic object, then the final value is | |
280 | // not known. | |
281 | if (this->object()->is_dynamic()) | |
282 | return false; | |
283 | ||
284 | // If the symbol is not undefined (it is defined or common), then | |
285 | // the final value is known. | |
286 | if (!this->is_undefined()) | |
287 | return true; | |
288 | ||
289 | // If the symbol is undefined, then whether the final value is known | |
290 | // depends on whether we are doing a static link. If we are doing a | |
291 | // dynamic link, then the final value could be filled in at runtime. | |
292 | // This could reasonably be the case for a weak undefined symbol. | |
293 | return parameters->doing_static_link(); | |
294 | } | |
295 | ||
14bfc3f5 ILT |
296 | // Class Symbol_table. |
297 | ||
6d013333 ILT |
298 | Symbol_table::Symbol_table(unsigned int count) |
299 | : saw_undefined_(0), offset_(0), table_(count), namepool_(), | |
f6ce93d6 | 300 | forwarders_(), commons_(), warnings_() |
14bfc3f5 | 301 | { |
6d013333 | 302 | namepool_.reserve(count); |
14bfc3f5 ILT |
303 | } |
304 | ||
305 | Symbol_table::~Symbol_table() | |
306 | { | |
307 | } | |
308 | ||
ad8f37d1 | 309 | // The hash function. The key values are Stringpool keys. |
14bfc3f5 | 310 | |
ad8f37d1 | 311 | inline size_t |
14bfc3f5 ILT |
312 | Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key& key) const |
313 | { | |
f0641a0b | 314 | return key.first ^ key.second; |
14bfc3f5 ILT |
315 | } |
316 | ||
ad8f37d1 ILT |
317 | // The symbol table key equality function. This is called with |
318 | // Stringpool keys. | |
14bfc3f5 | 319 | |
ad8f37d1 | 320 | inline bool |
14bfc3f5 ILT |
321 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, |
322 | const Symbol_table_key& k2) const | |
323 | { | |
324 | return k1.first == k2.first && k1.second == k2.second; | |
325 | } | |
326 | ||
dd8670e5 | 327 | // Make TO a symbol which forwards to FROM. |
14bfc3f5 ILT |
328 | |
329 | void | |
330 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
331 | { | |
a3ad94ed ILT |
332 | gold_assert(from != to); |
333 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
334 | this->forwarders_[from] = to; |
335 | from->set_forwarder(); | |
336 | } | |
337 | ||
61ba1cf9 ILT |
338 | // Resolve the forwards from FROM, returning the real symbol. |
339 | ||
14bfc3f5 | 340 | Symbol* |
c06b7b0b | 341 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 342 | { |
a3ad94ed | 343 | gold_assert(from->is_forwarder()); |
c06b7b0b | 344 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 345 | this->forwarders_.find(from); |
a3ad94ed | 346 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
347 | return p->second; |
348 | } | |
349 | ||
61ba1cf9 ILT |
350 | // Look up a symbol by name. |
351 | ||
352 | Symbol* | |
353 | Symbol_table::lookup(const char* name, const char* version) const | |
354 | { | |
f0641a0b ILT |
355 | Stringpool::Key name_key; |
356 | name = this->namepool_.find(name, &name_key); | |
61ba1cf9 ILT |
357 | if (name == NULL) |
358 | return NULL; | |
f0641a0b ILT |
359 | |
360 | Stringpool::Key version_key = 0; | |
61ba1cf9 ILT |
361 | if (version != NULL) |
362 | { | |
f0641a0b | 363 | version = this->namepool_.find(version, &version_key); |
61ba1cf9 ILT |
364 | if (version == NULL) |
365 | return NULL; | |
366 | } | |
367 | ||
f0641a0b | 368 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
369 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
370 | if (p == this->table_.end()) | |
371 | return NULL; | |
372 | return p->second; | |
373 | } | |
374 | ||
14bfc3f5 ILT |
375 | // Resolve a Symbol with another Symbol. This is only used in the |
376 | // unusual case where there are references to both an unversioned | |
377 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
378 | // version is the default version. Because this is unusual, we do |
379 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 380 | |
1564db8d | 381 | template<int size, bool big_endian> |
14bfc3f5 | 382 | void |
14b31740 ILT |
383 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from, |
384 | const char* version ACCEPT_SIZE_ENDIAN) | |
14bfc3f5 | 385 | { |
1564db8d ILT |
386 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
387 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
388 | // We don't bother to set the st_name field. | |
389 | esym.put_st_value(from->value()); | |
390 | esym.put_st_size(from->symsize()); | |
391 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 392 | esym.put_st_other(from->visibility(), from->nonvis()); |
16649710 | 393 | esym.put_st_shndx(from->shndx()); |
70e654ba | 394 | this->resolve(to, esym.sym(), esym.sym(), from->object(), version); |
1ebd95fd ILT |
395 | if (from->in_reg()) |
396 | to->set_in_reg(); | |
397 | if (from->in_dyn()) | |
398 | to->set_in_dyn(); | |
14bfc3f5 ILT |
399 | } |
400 | ||
401 | // Add one symbol from OBJECT to the symbol table. NAME is symbol | |
402 | // name and VERSION is the version; both are canonicalized. DEF is | |
403 | // whether this is the default version. | |
404 | ||
405 | // If DEF is true, then this is the definition of a default version of | |
406 | // a symbol. That means that any lookup of NAME/NULL and any lookup | |
407 | // of NAME/VERSION should always return the same symbol. This is | |
408 | // obvious for references, but in particular we want to do this for | |
409 | // definitions: overriding NAME/NULL should also override | |
410 | // NAME/VERSION. If we don't do that, it would be very hard to | |
411 | // override functions in a shared library which uses versioning. | |
412 | ||
413 | // We implement this by simply making both entries in the hash table | |
414 | // point to the same Symbol structure. That is easy enough if this is | |
415 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
416 | // that we have seen both already, in which case they will both have | |
417 | // independent entries in the symbol table. We can't simply change | |
418 | // the symbol table entry, because we have pointers to the entries | |
419 | // attached to the object files. So we mark the entry attached to the | |
420 | // object file as a forwarder, and record it in the forwarders_ map. | |
421 | // Note that entries in the hash table will never be marked as | |
422 | // forwarders. | |
70e654ba ILT |
423 | // |
424 | // SYM and ORIG_SYM are almost always the same. ORIG_SYM is the | |
425 | // symbol exactly as it existed in the input file. SYM is usually | |
426 | // that as well, but can be modified, for instance if we determine | |
427 | // it's in a to-be-discarded section. | |
14bfc3f5 ILT |
428 | |
429 | template<int size, bool big_endian> | |
aeddab66 | 430 | Sized_symbol<size>* |
f6ce93d6 | 431 | Symbol_table::add_from_object(Object* object, |
14bfc3f5 | 432 | const char *name, |
f0641a0b ILT |
433 | Stringpool::Key name_key, |
434 | const char *version, | |
435 | Stringpool::Key version_key, | |
436 | bool def, | |
70e654ba ILT |
437 | const elfcpp::Sym<size, big_endian>& sym, |
438 | const elfcpp::Sym<size, big_endian>& orig_sym) | |
14bfc3f5 ILT |
439 | { |
440 | Symbol* const snull = NULL; | |
441 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
442 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
443 | snull)); | |
14bfc3f5 ILT |
444 | |
445 | std::pair<typename Symbol_table_type::iterator, bool> insdef = | |
446 | std::make_pair(this->table_.end(), false); | |
447 | if (def) | |
448 | { | |
f0641a0b ILT |
449 | const Stringpool::Key vnull_key = 0; |
450 | insdef = this->table_.insert(std::make_pair(std::make_pair(name_key, | |
451 | vnull_key), | |
14bfc3f5 ILT |
452 | snull)); |
453 | } | |
454 | ||
455 | // ins.first: an iterator, which is a pointer to a pair. | |
456 | // ins.first->first: the key (a pair of name and version). | |
457 | // ins.first->second: the value (Symbol*). | |
458 | // ins.second: true if new entry was inserted, false if not. | |
459 | ||
1564db8d | 460 | Sized_symbol<size>* ret; |
ead1e424 ILT |
461 | bool was_undefined; |
462 | bool was_common; | |
14bfc3f5 ILT |
463 | if (!ins.second) |
464 | { | |
465 | // We already have an entry for NAME/VERSION. | |
593f47df ILT |
466 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) (ins.first->second |
467 | SELECT_SIZE(size)); | |
a3ad94ed | 468 | gold_assert(ret != NULL); |
ead1e424 ILT |
469 | |
470 | was_undefined = ret->is_undefined(); | |
471 | was_common = ret->is_common(); | |
472 | ||
70e654ba | 473 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
474 | |
475 | if (def) | |
476 | { | |
477 | if (insdef.second) | |
478 | { | |
479 | // This is the first time we have seen NAME/NULL. Make | |
480 | // NAME/NULL point to NAME/VERSION. | |
481 | insdef.first->second = ret; | |
482 | } | |
99f8faca ILT |
483 | else if (insdef.first->second != ret |
484 | && insdef.first->second->is_undefined()) | |
14bfc3f5 ILT |
485 | { |
486 | // This is the unfortunate case where we already have | |
99f8faca ILT |
487 | // entries for both NAME/VERSION and NAME/NULL. Note |
488 | // that we don't want to combine them if the existing | |
489 | // symbol is going to override the new one. FIXME: We | |
490 | // currently just test is_undefined, but this may not do | |
491 | // the right thing if the existing symbol is from a | |
492 | // shared library and the new one is from a regular | |
493 | // object. | |
494 | ||
274e99f9 | 495 | const Sized_symbol<size>* sym2; |
593f47df | 496 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
497 | insdef.first->second |
498 | SELECT_SIZE(size)); | |
593f47df | 499 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
14b31740 | 500 | ret, sym2, version SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
501 | this->make_forwarder(insdef.first->second, ret); |
502 | insdef.first->second = ret; | |
503 | } | |
504 | } | |
505 | } | |
506 | else | |
507 | { | |
508 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 509 | gold_assert(ins.first->second == NULL); |
ead1e424 ILT |
510 | |
511 | was_undefined = false; | |
512 | was_common = false; | |
513 | ||
14bfc3f5 ILT |
514 | if (def && !insdef.second) |
515 | { | |
14b31740 ILT |
516 | // We already have an entry for NAME/NULL. If we override |
517 | // it, then change it to NAME/VERSION. | |
593f47df ILT |
518 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
519 | insdef.first->second | |
520 | SELECT_SIZE(size)); | |
70e654ba | 521 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
522 | ins.first->second = ret; |
523 | } | |
524 | else | |
525 | { | |
f6ce93d6 ILT |
526 | Sized_target<size, big_endian>* target = |
527 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
528 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
529 | if (!target->has_make_symbol()) |
530 | ret = new Sized_symbol<size>(); | |
531 | else | |
14bfc3f5 | 532 | { |
1564db8d ILT |
533 | ret = target->make_symbol(); |
534 | if (ret == NULL) | |
14bfc3f5 ILT |
535 | { |
536 | // This means that we don't want a symbol table | |
537 | // entry after all. | |
538 | if (!def) | |
539 | this->table_.erase(ins.first); | |
540 | else | |
541 | { | |
542 | this->table_.erase(insdef.first); | |
543 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
544 | this->table_.erase(std::make_pair(name_key, |
545 | version_key)); | |
14bfc3f5 ILT |
546 | } |
547 | return NULL; | |
548 | } | |
549 | } | |
14bfc3f5 | 550 | |
1564db8d ILT |
551 | ret->init(name, version, object, sym); |
552 | ||
14bfc3f5 ILT |
553 | ins.first->second = ret; |
554 | if (def) | |
555 | { | |
556 | // This is the first time we have seen NAME/NULL. Point | |
557 | // it at the new entry for NAME/VERSION. | |
a3ad94ed | 558 | gold_assert(insdef.second); |
14bfc3f5 ILT |
559 | insdef.first->second = ret; |
560 | } | |
561 | } | |
562 | } | |
563 | ||
ead1e424 ILT |
564 | // Record every time we see a new undefined symbol, to speed up |
565 | // archive groups. | |
566 | if (!was_undefined && ret->is_undefined()) | |
567 | ++this->saw_undefined_; | |
568 | ||
569 | // Keep track of common symbols, to speed up common symbol | |
570 | // allocation. | |
571 | if (!was_common && ret->is_common()) | |
572 | this->commons_.push_back(ret); | |
573 | ||
14bfc3f5 ILT |
574 | return ret; |
575 | } | |
576 | ||
f6ce93d6 | 577 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
578 | |
579 | template<int size, bool big_endian> | |
580 | void | |
dbe717ef ILT |
581 | Symbol_table::add_from_relobj( |
582 | Sized_relobj<size, big_endian>* relobj, | |
f6ce93d6 | 583 | const unsigned char* syms, |
14bfc3f5 ILT |
584 | size_t count, |
585 | const char* sym_names, | |
586 | size_t sym_name_size, | |
730cdc88 | 587 | typename Sized_relobj<size, big_endian>::Symbols* sympointers) |
14bfc3f5 | 588 | { |
9025d29d ILT |
589 | gold_assert(size == relobj->target()->get_size()); |
590 | gold_assert(size == parameters->get_size()); | |
14bfc3f5 | 591 | |
a783673b ILT |
592 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
593 | ||
f6ce93d6 | 594 | const unsigned char* p = syms; |
a783673b | 595 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
596 | { |
597 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 598 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 599 | |
a783673b | 600 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
601 | if (st_name >= sym_name_size) |
602 | { | |
75f2446e ILT |
603 | relobj->error(_("bad global symbol name offset %u at %zu"), |
604 | st_name, i); | |
605 | continue; | |
14bfc3f5 ILT |
606 | } |
607 | ||
dbe717ef ILT |
608 | const char* name = sym_names + st_name; |
609 | ||
a783673b ILT |
610 | // A symbol defined in a section which we are not including must |
611 | // be treated as an undefined symbol. | |
612 | unsigned char symbuf[sym_size]; | |
613 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
614 | unsigned int st_shndx = psym->get_st_shndx(); | |
615 | if (st_shndx != elfcpp::SHN_UNDEF | |
616 | && st_shndx < elfcpp::SHN_LORESERVE | |
dbe717ef | 617 | && !relobj->is_section_included(st_shndx)) |
a783673b ILT |
618 | { |
619 | memcpy(symbuf, p, sym_size); | |
620 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
621 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
622 | psym = &sym2; | |
623 | } | |
624 | ||
14bfc3f5 ILT |
625 | // In an object file, an '@' in the name separates the symbol |
626 | // name from the version name. If there are two '@' characters, | |
627 | // this is the default version. | |
628 | const char* ver = strchr(name, '@'); | |
629 | ||
aeddab66 | 630 | Sized_symbol<size>* res; |
14bfc3f5 ILT |
631 | if (ver == NULL) |
632 | { | |
f0641a0b | 633 | Stringpool::Key name_key; |
cfd73a4e | 634 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 635 | res = this->add_from_object(relobj, name, name_key, NULL, 0, |
70e654ba | 636 | false, *psym, sym); |
14bfc3f5 ILT |
637 | } |
638 | else | |
639 | { | |
f0641a0b | 640 | Stringpool::Key name_key; |
c0873094 ILT |
641 | name = this->namepool_.add_with_length(name, ver - name, true, |
642 | &name_key); | |
f0641a0b | 643 | |
14bfc3f5 ILT |
644 | bool def = false; |
645 | ++ver; | |
646 | if (*ver == '@') | |
647 | { | |
648 | def = true; | |
649 | ++ver; | |
650 | } | |
f0641a0b ILT |
651 | |
652 | Stringpool::Key ver_key; | |
cfd73a4e | 653 | ver = this->namepool_.add(ver, true, &ver_key); |
f0641a0b | 654 | |
dbe717ef | 655 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
70e654ba | 656 | def, *psym, sym); |
14bfc3f5 ILT |
657 | } |
658 | ||
730cdc88 | 659 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
660 | } |
661 | } | |
662 | ||
dbe717ef ILT |
663 | // Add all the symbols in a dynamic object to the hash table. |
664 | ||
665 | template<int size, bool big_endian> | |
666 | void | |
667 | Symbol_table::add_from_dynobj( | |
668 | Sized_dynobj<size, big_endian>* dynobj, | |
669 | const unsigned char* syms, | |
670 | size_t count, | |
671 | const char* sym_names, | |
672 | size_t sym_name_size, | |
673 | const unsigned char* versym, | |
674 | size_t versym_size, | |
675 | const std::vector<const char*>* version_map) | |
676 | { | |
9025d29d ILT |
677 | gold_assert(size == dynobj->target()->get_size()); |
678 | gold_assert(size == parameters->get_size()); | |
dbe717ef ILT |
679 | |
680 | if (versym != NULL && versym_size / 2 < count) | |
681 | { | |
75f2446e ILT |
682 | dynobj->error(_("too few symbol versions")); |
683 | return; | |
dbe717ef ILT |
684 | } |
685 | ||
686 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
687 | ||
aeddab66 ILT |
688 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
689 | // weak aliases. This is necessary because if the dynamic object | |
690 | // provides the same variable under two names, one of which is a | |
691 | // weak definition, and the regular object refers to the weak | |
692 | // definition, we have to put both the weak definition and the | |
693 | // strong definition into the dynamic symbol table. Given a weak | |
694 | // definition, the only way that we can find the corresponding | |
695 | // strong definition, if any, is to search the symbol table. | |
696 | std::vector<Sized_symbol<size>*> object_symbols; | |
697 | ||
dbe717ef ILT |
698 | const unsigned char* p = syms; |
699 | const unsigned char* vs = versym; | |
700 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
701 | { | |
702 | elfcpp::Sym<size, big_endian> sym(p); | |
703 | ||
704 | // Ignore symbols with local binding. | |
705 | if (sym.get_st_bind() == elfcpp::STB_LOCAL) | |
706 | continue; | |
707 | ||
708 | unsigned int st_name = sym.get_st_name(); | |
709 | if (st_name >= sym_name_size) | |
710 | { | |
75f2446e ILT |
711 | dynobj->error(_("bad symbol name offset %u at %zu"), |
712 | st_name, i); | |
713 | continue; | |
dbe717ef ILT |
714 | } |
715 | ||
716 | const char* name = sym_names + st_name; | |
717 | ||
aeddab66 ILT |
718 | Sized_symbol<size>* res; |
719 | ||
dbe717ef ILT |
720 | if (versym == NULL) |
721 | { | |
722 | Stringpool::Key name_key; | |
cfd73a4e | 723 | name = this->namepool_.add(name, true, &name_key); |
aeddab66 | 724 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
70e654ba | 725 | false, sym, sym); |
dbe717ef | 726 | } |
aeddab66 ILT |
727 | else |
728 | { | |
729 | // Read the version information. | |
dbe717ef | 730 | |
aeddab66 | 731 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 732 | |
aeddab66 ILT |
733 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
734 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 735 | |
aeddab66 ILT |
736 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
737 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
738 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
739 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
740 | // for an undefined symbol. I don't know what the Sun | |
741 | // linker will generate. | |
dbe717ef | 742 | |
aeddab66 ILT |
743 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
744 | && sym.get_st_shndx() != elfcpp::SHN_UNDEF) | |
745 | { | |
746 | // This symbol should not be visible outside the object. | |
747 | continue; | |
748 | } | |
64707334 | 749 | |
aeddab66 ILT |
750 | // At this point we are definitely going to add this symbol. |
751 | Stringpool::Key name_key; | |
752 | name = this->namepool_.add(name, true, &name_key); | |
dbe717ef | 753 | |
aeddab66 ILT |
754 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
755 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
756 | { | |
757 | // This symbol does not have a version. | |
758 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 759 | false, sym, sym); |
aeddab66 ILT |
760 | } |
761 | else | |
762 | { | |
763 | if (v >= version_map->size()) | |
764 | { | |
765 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
766 | i, v); | |
767 | continue; | |
768 | } | |
dbe717ef | 769 | |
aeddab66 ILT |
770 | const char* version = (*version_map)[v]; |
771 | if (version == NULL) | |
772 | { | |
773 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
774 | i, v); | |
775 | continue; | |
776 | } | |
dbe717ef | 777 | |
aeddab66 ILT |
778 | Stringpool::Key version_key; |
779 | version = this->namepool_.add(version, true, &version_key); | |
780 | ||
781 | // If this is an absolute symbol, and the version name | |
782 | // and symbol name are the same, then this is the | |
783 | // version definition symbol. These symbols exist to | |
784 | // support using -u to pull in particular versions. We | |
785 | // do not want to record a version for them. | |
786 | if (sym.get_st_shndx() == elfcpp::SHN_ABS | |
787 | && name_key == version_key) | |
788 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 789 | false, sym, sym); |
aeddab66 ILT |
790 | else |
791 | { | |
792 | const bool def = (!hidden | |
793 | && (sym.get_st_shndx() | |
794 | != elfcpp::SHN_UNDEF)); | |
795 | res = this->add_from_object(dynobj, name, name_key, version, | |
70e654ba | 796 | version_key, def, sym, sym); |
aeddab66 ILT |
797 | } |
798 | } | |
dbe717ef ILT |
799 | } |
800 | ||
aeddab66 ILT |
801 | if (sym.get_st_shndx() != elfcpp::SHN_UNDEF |
802 | && sym.get_st_type() == elfcpp::STT_OBJECT) | |
803 | object_symbols.push_back(res); | |
804 | } | |
805 | ||
806 | this->record_weak_aliases(&object_symbols); | |
807 | } | |
808 | ||
809 | // This is used to sort weak aliases. We sort them first by section | |
810 | // index, then by offset, then by weak ahead of strong. | |
811 | ||
812 | template<int size> | |
813 | class Weak_alias_sorter | |
814 | { | |
815 | public: | |
816 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
817 | }; | |
818 | ||
819 | template<int size> | |
820 | bool | |
821 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
822 | const Sized_symbol<size>* s2) const | |
823 | { | |
824 | if (s1->shndx() != s2->shndx()) | |
825 | return s1->shndx() < s2->shndx(); | |
826 | if (s1->value() != s2->value()) | |
827 | return s1->value() < s2->value(); | |
828 | if (s1->binding() != s2->binding()) | |
829 | { | |
830 | if (s1->binding() == elfcpp::STB_WEAK) | |
831 | return true; | |
832 | if (s2->binding() == elfcpp::STB_WEAK) | |
833 | return false; | |
834 | } | |
835 | return std::string(s1->name()) < std::string(s2->name()); | |
836 | } | |
dbe717ef | 837 | |
aeddab66 ILT |
838 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
839 | // for any weak aliases, and record them so that if we add the weak | |
840 | // alias to the dynamic symbol table, we also add the corresponding | |
841 | // strong symbol. | |
dbe717ef | 842 | |
aeddab66 ILT |
843 | template<int size> |
844 | void | |
845 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
846 | { | |
847 | // Sort the vector by section index, then by offset, then by weak | |
848 | // ahead of strong. | |
849 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
850 | ||
851 | // Walk through the vector. For each weak definition, record | |
852 | // aliases. | |
853 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
854 | symbols->begin(); | |
855 | p != symbols->end(); | |
856 | ++p) | |
857 | { | |
858 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
859 | continue; | |
860 | ||
861 | // Build a circular list of weak aliases. Each symbol points to | |
862 | // the next one in the circular list. | |
863 | ||
864 | Sized_symbol<size>* from_sym = *p; | |
865 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
866 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 867 | { |
aeddab66 ILT |
868 | if ((*q)->shndx() != from_sym->shndx() |
869 | || (*q)->value() != from_sym->value()) | |
870 | break; | |
871 | ||
872 | this->weak_aliases_[from_sym] = *q; | |
873 | from_sym->set_has_alias(); | |
874 | from_sym = *q; | |
dbe717ef ILT |
875 | } |
876 | ||
aeddab66 ILT |
877 | if (from_sym != *p) |
878 | { | |
879 | this->weak_aliases_[from_sym] = *p; | |
880 | from_sym->set_has_alias(); | |
881 | } | |
dbe717ef | 882 | |
aeddab66 | 883 | p = q - 1; |
dbe717ef ILT |
884 | } |
885 | } | |
886 | ||
ead1e424 ILT |
887 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
888 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 889 | // If this does not return NULL, it sets *POLDSYM to the existing |
306d9ef0 | 890 | // symbol if there is one. This canonicalizes *PNAME and *PVERSION. |
ead1e424 ILT |
891 | |
892 | template<int size, bool big_endian> | |
893 | Sized_symbol<size>* | |
306d9ef0 ILT |
894 | Symbol_table::define_special_symbol(const Target* target, const char** pname, |
895 | const char** pversion, bool only_if_ref, | |
86f2e683 | 896 | Sized_symbol<size>** poldsym |
593f47df | 897 | ACCEPT_SIZE_ENDIAN) |
ead1e424 | 898 | { |
ead1e424 ILT |
899 | Symbol* oldsym; |
900 | Sized_symbol<size>* sym; | |
86f2e683 ILT |
901 | bool add_to_table = false; |
902 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
ead1e424 ILT |
903 | |
904 | if (only_if_ref) | |
905 | { | |
306d9ef0 | 906 | oldsym = this->lookup(*pname, *pversion); |
f6ce93d6 | 907 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 908 | return NULL; |
306d9ef0 ILT |
909 | |
910 | *pname = oldsym->name(); | |
911 | *pversion = oldsym->version(); | |
ead1e424 ILT |
912 | } |
913 | else | |
914 | { | |
14b31740 | 915 | // Canonicalize NAME and VERSION. |
f0641a0b | 916 | Stringpool::Key name_key; |
cfd73a4e | 917 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 918 | |
14b31740 | 919 | Stringpool::Key version_key = 0; |
306d9ef0 | 920 | if (*pversion != NULL) |
cfd73a4e | 921 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 922 | |
ead1e424 | 923 | Symbol* const snull = NULL; |
ead1e424 | 924 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
925 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
926 | version_key), | |
ead1e424 ILT |
927 | snull)); |
928 | ||
929 | if (!ins.second) | |
930 | { | |
14b31740 | 931 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 932 | oldsym = ins.first->second; |
a3ad94ed | 933 | gold_assert(oldsym != NULL); |
ead1e424 ILT |
934 | } |
935 | else | |
936 | { | |
937 | // We haven't seen this symbol before. | |
a3ad94ed | 938 | gold_assert(ins.first->second == NULL); |
86f2e683 ILT |
939 | add_to_table = true; |
940 | add_loc = ins.first; | |
ead1e424 ILT |
941 | oldsym = NULL; |
942 | } | |
943 | } | |
944 | ||
86f2e683 ILT |
945 | if (!target->has_make_symbol()) |
946 | sym = new Sized_symbol<size>(); | |
947 | else | |
ead1e424 | 948 | { |
86f2e683 ILT |
949 | gold_assert(target->get_size() == size); |
950 | gold_assert(target->is_big_endian() ? big_endian : !big_endian); | |
951 | typedef Sized_target<size, big_endian> My_target; | |
952 | const My_target* sized_target = | |
953 | static_cast<const My_target*>(target); | |
954 | sym = sized_target->make_symbol(); | |
955 | if (sym == NULL) | |
956 | return NULL; | |
957 | } | |
ead1e424 | 958 | |
86f2e683 ILT |
959 | if (add_to_table) |
960 | add_loc->second = sym; | |
961 | else | |
962 | gold_assert(oldsym != NULL); | |
ead1e424 | 963 | |
86f2e683 ILT |
964 | *poldsym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
965 | SELECT_SIZE(size)); | |
ead1e424 ILT |
966 | |
967 | return sym; | |
968 | } | |
969 | ||
970 | // Define a symbol based on an Output_data. | |
971 | ||
14b31740 ILT |
972 | Symbol* |
973 | Symbol_table::define_in_output_data(const Target* target, const char* name, | |
974 | const char* version, Output_data* od, | |
ead1e424 ILT |
975 | uint64_t value, uint64_t symsize, |
976 | elfcpp::STT type, elfcpp::STB binding, | |
977 | elfcpp::STV visibility, | |
978 | unsigned char nonvis, | |
979 | bool offset_is_from_end, | |
980 | bool only_if_ref) | |
981 | { | |
9025d29d | 982 | if (parameters->get_size() == 32) |
86f2e683 ILT |
983 | { |
984 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
985 | return this->do_define_in_output_data<32>(target, name, version, od, | |
986 | value, symsize, type, binding, | |
987 | visibility, nonvis, | |
988 | offset_is_from_end, | |
989 | only_if_ref); | |
990 | #else | |
991 | gold_unreachable(); | |
992 | #endif | |
993 | } | |
9025d29d | 994 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
995 | { |
996 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
997 | return this->do_define_in_output_data<64>(target, name, version, od, | |
998 | value, symsize, type, binding, | |
999 | visibility, nonvis, | |
1000 | offset_is_from_end, | |
1001 | only_if_ref); | |
1002 | #else | |
1003 | gold_unreachable(); | |
1004 | #endif | |
1005 | } | |
ead1e424 | 1006 | else |
a3ad94ed | 1007 | gold_unreachable(); |
ead1e424 ILT |
1008 | } |
1009 | ||
1010 | // Define a symbol in an Output_data, sized version. | |
1011 | ||
1012 | template<int size> | |
14b31740 | 1013 | Sized_symbol<size>* |
ead1e424 | 1014 | Symbol_table::do_define_in_output_data( |
14b31740 | 1015 | const Target* target, |
ead1e424 | 1016 | const char* name, |
14b31740 | 1017 | const char* version, |
ead1e424 ILT |
1018 | Output_data* od, |
1019 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1020 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1021 | elfcpp::STT type, | |
1022 | elfcpp::STB binding, | |
1023 | elfcpp::STV visibility, | |
1024 | unsigned char nonvis, | |
1025 | bool offset_is_from_end, | |
1026 | bool only_if_ref) | |
1027 | { | |
1028 | Sized_symbol<size>* sym; | |
86f2e683 | 1029 | Sized_symbol<size>* oldsym; |
ead1e424 | 1030 | |
9025d29d | 1031 | if (parameters->is_big_endian()) |
193a53d9 ILT |
1032 | { |
1033 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1034 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
306d9ef0 | 1035 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1036 | SELECT_SIZE_ENDIAN(size, true)); |
1037 | #else | |
1038 | gold_unreachable(); | |
1039 | #endif | |
1040 | } | |
ead1e424 | 1041 | else |
193a53d9 ILT |
1042 | { |
1043 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1044 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
306d9ef0 | 1045 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1046 | SELECT_SIZE_ENDIAN(size, false)); |
1047 | #else | |
1048 | gold_unreachable(); | |
1049 | #endif | |
1050 | } | |
ead1e424 ILT |
1051 | |
1052 | if (sym == NULL) | |
14b31740 | 1053 | return NULL; |
ead1e424 | 1054 | |
d4f5281b | 1055 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1056 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, |
1057 | offset_is_from_end); | |
14b31740 | 1058 | |
86f2e683 ILT |
1059 | if (oldsym != NULL |
1060 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1061 | this->override_with_special(oldsym, sym); |
86f2e683 | 1062 | |
14b31740 | 1063 | return sym; |
ead1e424 ILT |
1064 | } |
1065 | ||
1066 | // Define a symbol based on an Output_segment. | |
1067 | ||
14b31740 ILT |
1068 | Symbol* |
1069 | Symbol_table::define_in_output_segment(const Target* target, const char* name, | |
1070 | const char* version, Output_segment* os, | |
ead1e424 ILT |
1071 | uint64_t value, uint64_t symsize, |
1072 | elfcpp::STT type, elfcpp::STB binding, | |
1073 | elfcpp::STV visibility, | |
1074 | unsigned char nonvis, | |
1075 | Symbol::Segment_offset_base offset_base, | |
1076 | bool only_if_ref) | |
1077 | { | |
9025d29d | 1078 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1079 | { |
1080 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1081 | return this->do_define_in_output_segment<32>(target, name, version, os, | |
1082 | value, symsize, type, | |
1083 | binding, visibility, nonvis, | |
1084 | offset_base, only_if_ref); | |
1085 | #else | |
1086 | gold_unreachable(); | |
1087 | #endif | |
1088 | } | |
9025d29d | 1089 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1090 | { |
1091 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1092 | return this->do_define_in_output_segment<64>(target, name, version, os, | |
1093 | value, symsize, type, | |
1094 | binding, visibility, nonvis, | |
1095 | offset_base, only_if_ref); | |
1096 | #else | |
1097 | gold_unreachable(); | |
1098 | #endif | |
1099 | } | |
ead1e424 | 1100 | else |
a3ad94ed | 1101 | gold_unreachable(); |
ead1e424 ILT |
1102 | } |
1103 | ||
1104 | // Define a symbol in an Output_segment, sized version. | |
1105 | ||
1106 | template<int size> | |
14b31740 | 1107 | Sized_symbol<size>* |
ead1e424 | 1108 | Symbol_table::do_define_in_output_segment( |
14b31740 | 1109 | const Target* target, |
ead1e424 | 1110 | const char* name, |
14b31740 | 1111 | const char* version, |
ead1e424 ILT |
1112 | Output_segment* os, |
1113 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1114 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1115 | elfcpp::STT type, | |
1116 | elfcpp::STB binding, | |
1117 | elfcpp::STV visibility, | |
1118 | unsigned char nonvis, | |
1119 | Symbol::Segment_offset_base offset_base, | |
1120 | bool only_if_ref) | |
1121 | { | |
1122 | Sized_symbol<size>* sym; | |
86f2e683 | 1123 | Sized_symbol<size>* oldsym; |
ead1e424 | 1124 | |
9025d29d ILT |
1125 | if (parameters->is_big_endian()) |
1126 | { | |
1127 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1128 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1129 | target, &name, &version, only_if_ref, &oldsym | |
1130 | SELECT_SIZE_ENDIAN(size, true)); | |
1131 | #else | |
1132 | gold_unreachable(); | |
1133 | #endif | |
1134 | } | |
ead1e424 | 1135 | else |
9025d29d ILT |
1136 | { |
1137 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1138 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1139 | target, &name, &version, only_if_ref, &oldsym | |
1140 | SELECT_SIZE_ENDIAN(size, false)); | |
1141 | #else | |
1142 | gold_unreachable(); | |
1143 | #endif | |
1144 | } | |
ead1e424 ILT |
1145 | |
1146 | if (sym == NULL) | |
14b31740 | 1147 | return NULL; |
ead1e424 | 1148 | |
d4f5281b | 1149 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1150 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, |
1151 | offset_base); | |
14b31740 | 1152 | |
86f2e683 ILT |
1153 | if (oldsym != NULL |
1154 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1155 | this->override_with_special(oldsym, sym); |
86f2e683 | 1156 | |
14b31740 | 1157 | return sym; |
ead1e424 ILT |
1158 | } |
1159 | ||
1160 | // Define a special symbol with a constant value. It is a multiple | |
1161 | // definition error if this symbol is already defined. | |
1162 | ||
14b31740 ILT |
1163 | Symbol* |
1164 | Symbol_table::define_as_constant(const Target* target, const char* name, | |
1165 | const char* version, uint64_t value, | |
1166 | uint64_t symsize, elfcpp::STT type, | |
1167 | elfcpp::STB binding, elfcpp::STV visibility, | |
1168 | unsigned char nonvis, bool only_if_ref) | |
ead1e424 | 1169 | { |
9025d29d | 1170 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1171 | { |
1172 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1173 | return this->do_define_as_constant<32>(target, name, version, value, | |
1174 | symsize, type, binding, | |
1175 | visibility, nonvis, only_if_ref); | |
1176 | #else | |
1177 | gold_unreachable(); | |
1178 | #endif | |
1179 | } | |
9025d29d | 1180 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1181 | { |
1182 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1183 | return this->do_define_as_constant<64>(target, name, version, value, | |
1184 | symsize, type, binding, | |
1185 | visibility, nonvis, only_if_ref); | |
1186 | #else | |
1187 | gold_unreachable(); | |
1188 | #endif | |
1189 | } | |
ead1e424 | 1190 | else |
a3ad94ed | 1191 | gold_unreachable(); |
ead1e424 ILT |
1192 | } |
1193 | ||
1194 | // Define a symbol as a constant, sized version. | |
1195 | ||
1196 | template<int size> | |
14b31740 | 1197 | Sized_symbol<size>* |
ead1e424 | 1198 | Symbol_table::do_define_as_constant( |
14b31740 | 1199 | const Target* target, |
ead1e424 | 1200 | const char* name, |
14b31740 | 1201 | const char* version, |
ead1e424 ILT |
1202 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1203 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1204 | elfcpp::STT type, | |
1205 | elfcpp::STB binding, | |
1206 | elfcpp::STV visibility, | |
1207 | unsigned char nonvis, | |
1208 | bool only_if_ref) | |
1209 | { | |
1210 | Sized_symbol<size>* sym; | |
86f2e683 | 1211 | Sized_symbol<size>* oldsym; |
ead1e424 | 1212 | |
9025d29d ILT |
1213 | if (parameters->is_big_endian()) |
1214 | { | |
1215 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1216 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1217 | target, &name, &version, only_if_ref, &oldsym | |
1218 | SELECT_SIZE_ENDIAN(size, true)); | |
1219 | #else | |
1220 | gold_unreachable(); | |
1221 | #endif | |
1222 | } | |
ead1e424 | 1223 | else |
9025d29d ILT |
1224 | { |
1225 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1226 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1227 | target, &name, &version, only_if_ref, &oldsym | |
1228 | SELECT_SIZE_ENDIAN(size, false)); | |
1229 | #else | |
1230 | gold_unreachable(); | |
1231 | #endif | |
1232 | } | |
ead1e424 ILT |
1233 | |
1234 | if (sym == NULL) | |
14b31740 | 1235 | return NULL; |
ead1e424 | 1236 | |
d4f5281b | 1237 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 | 1238 | sym->init(name, value, symsize, type, binding, visibility, nonvis); |
14b31740 | 1239 | |
86f2e683 ILT |
1240 | if (oldsym != NULL |
1241 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1242 | this->override_with_special(oldsym, sym); |
86f2e683 | 1243 | |
14b31740 | 1244 | return sym; |
ead1e424 ILT |
1245 | } |
1246 | ||
1247 | // Define a set of symbols in output sections. | |
1248 | ||
1249 | void | |
14b31740 ILT |
1250 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1251 | int count, const Define_symbol_in_section* p) | |
ead1e424 ILT |
1252 | { |
1253 | for (int i = 0; i < count; ++i, ++p) | |
1254 | { | |
1255 | Output_section* os = layout->find_output_section(p->output_section); | |
1256 | if (os != NULL) | |
14b31740 ILT |
1257 | this->define_in_output_data(target, p->name, NULL, os, p->value, |
1258 | p->size, p->type, p->binding, | |
1259 | p->visibility, p->nonvis, | |
1260 | p->offset_is_from_end, p->only_if_ref); | |
ead1e424 | 1261 | else |
14b31740 | 1262 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1263 | p->binding, p->visibility, p->nonvis, |
1264 | p->only_if_ref); | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | // Define a set of symbols in output segments. | |
1269 | ||
1270 | void | |
14b31740 ILT |
1271 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1272 | int count, const Define_symbol_in_segment* p) | |
ead1e424 ILT |
1273 | { |
1274 | for (int i = 0; i < count; ++i, ++p) | |
1275 | { | |
1276 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
1277 | p->segment_flags_set, | |
1278 | p->segment_flags_clear); | |
1279 | if (os != NULL) | |
14b31740 ILT |
1280 | this->define_in_output_segment(target, p->name, NULL, os, p->value, |
1281 | p->size, p->type, p->binding, | |
1282 | p->visibility, p->nonvis, | |
1283 | p->offset_base, p->only_if_ref); | |
ead1e424 | 1284 | else |
14b31740 | 1285 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1286 | p->binding, p->visibility, p->nonvis, |
1287 | p->only_if_ref); | |
1288 | } | |
1289 | } | |
1290 | ||
46fe1623 ILT |
1291 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
1292 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
1293 | // the offset within POSD. | |
1294 | ||
1295 | template<int size> | |
1296 | void | |
fe8718a4 ILT |
1297 | Symbol_table::define_with_copy_reloc( |
1298 | const Target* target, | |
1299 | Sized_symbol<size>* csym, | |
1300 | Output_data* posd, | |
1301 | typename elfcpp::Elf_types<size>::Elf_Addr value) | |
46fe1623 ILT |
1302 | { |
1303 | gold_assert(csym->is_from_dynobj()); | |
1304 | gold_assert(!csym->is_copied_from_dynobj()); | |
1305 | Object* object = csym->object(); | |
1306 | gold_assert(object->is_dynamic()); | |
1307 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
1308 | ||
1309 | // Our copied variable has to override any variable in a shared | |
1310 | // library. | |
1311 | elfcpp::STB binding = csym->binding(); | |
1312 | if (binding == elfcpp::STB_WEAK) | |
1313 | binding = elfcpp::STB_GLOBAL; | |
1314 | ||
1315 | this->define_in_output_data(target, csym->name(), csym->version(), | |
1316 | posd, value, csym->symsize(), | |
1317 | csym->type(), binding, | |
1318 | csym->visibility(), csym->nonvis(), | |
1319 | false, false); | |
1320 | ||
1321 | csym->set_is_copied_from_dynobj(); | |
1322 | csym->set_needs_dynsym_entry(); | |
1323 | ||
1324 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
1325 | ||
1326 | // We have now defined all aliases, but we have not entered them all | |
1327 | // in the copied_symbol_dynobjs_ map. | |
1328 | if (csym->has_alias()) | |
1329 | { | |
1330 | Symbol* sym = csym; | |
1331 | while (true) | |
1332 | { | |
1333 | sym = this->weak_aliases_[sym]; | |
1334 | if (sym == csym) | |
1335 | break; | |
1336 | gold_assert(sym->output_data() == posd); | |
1337 | ||
1338 | sym->set_is_copied_from_dynobj(); | |
1339 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
1345 | // the original definition was found. | |
1346 | ||
1347 | Dynobj* | |
1348 | Symbol_table::get_copy_source(const Symbol* sym) const | |
1349 | { | |
1350 | gold_assert(sym->is_copied_from_dynobj()); | |
1351 | Copied_symbol_dynobjs::const_iterator p = | |
1352 | this->copied_symbol_dynobjs_.find(sym); | |
1353 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
1354 | return p->second; | |
1355 | } | |
1356 | ||
a3ad94ed ILT |
1357 | // Set the dynamic symbol indexes. INDEX is the index of the first |
1358 | // global dynamic symbol. Pointers to the symbols are stored into the | |
1359 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
1360 | // updated dynamic symbol index. | |
1361 | ||
1362 | unsigned int | |
35cdfc9a | 1363 | Symbol_table::set_dynsym_indexes(const Target* target, |
14b31740 | 1364 | unsigned int index, |
a3ad94ed | 1365 | std::vector<Symbol*>* syms, |
14b31740 ILT |
1366 | Stringpool* dynpool, |
1367 | Versions* versions) | |
a3ad94ed ILT |
1368 | { |
1369 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
1370 | p != this->table_.end(); | |
1371 | ++p) | |
1372 | { | |
1373 | Symbol* sym = p->second; | |
16649710 ILT |
1374 | |
1375 | // Note that SYM may already have a dynamic symbol index, since | |
1376 | // some symbols appear more than once in the symbol table, with | |
1377 | // and without a version. | |
1378 | ||
436ca963 | 1379 | if (!sym->should_add_dynsym_entry()) |
16649710 ILT |
1380 | sym->set_dynsym_index(-1U); |
1381 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
1382 | { |
1383 | sym->set_dynsym_index(index); | |
1384 | ++index; | |
1385 | syms->push_back(sym); | |
cfd73a4e | 1386 | dynpool->add(sym->name(), false, NULL); |
14b31740 ILT |
1387 | |
1388 | // Record any version information. | |
1389 | if (sym->version() != NULL) | |
35cdfc9a | 1390 | versions->record_version(this, dynpool, sym); |
a3ad94ed ILT |
1391 | } |
1392 | } | |
1393 | ||
14b31740 ILT |
1394 | // Finish up the versions. In some cases this may add new dynamic |
1395 | // symbols. | |
1396 | index = versions->finalize(target, this, index, syms); | |
1397 | ||
a3ad94ed ILT |
1398 | return index; |
1399 | } | |
1400 | ||
c06b7b0b ILT |
1401 | // Set the final values for all the symbols. The index of the first |
1402 | // global symbol in the output file is INDEX. Record the file offset | |
75f65a3e | 1403 | // OFF. Add their names to POOL. Return the new file offset. |
54dc6425 | 1404 | |
75f65a3e | 1405 | off_t |
cb295612 ILT |
1406 | Symbol_table::finalize(unsigned int index, off_t off, off_t dynoff, |
1407 | size_t dyn_global_index, size_t dyncount, | |
16649710 | 1408 | Stringpool* pool) |
54dc6425 | 1409 | { |
f6ce93d6 ILT |
1410 | off_t ret; |
1411 | ||
a3ad94ed | 1412 | gold_assert(index != 0); |
c06b7b0b ILT |
1413 | this->first_global_index_ = index; |
1414 | ||
16649710 ILT |
1415 | this->dynamic_offset_ = dynoff; |
1416 | this->first_dynamic_global_index_ = dyn_global_index; | |
1417 | this->dynamic_count_ = dyncount; | |
1418 | ||
9025d29d ILT |
1419 | if (parameters->get_size() == 32) |
1420 | { | |
1421 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
1422 | ret = this->sized_finalize<32>(index, off, pool); | |
1423 | #else | |
1424 | gold_unreachable(); | |
1425 | #endif | |
1426 | } | |
1427 | else if (parameters->get_size() == 64) | |
1428 | { | |
1429 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
1430 | ret = this->sized_finalize<64>(index, off, pool); | |
1431 | #else | |
1432 | gold_unreachable(); | |
1433 | #endif | |
1434 | } | |
61ba1cf9 | 1435 | else |
a3ad94ed | 1436 | gold_unreachable(); |
f6ce93d6 ILT |
1437 | |
1438 | // Now that we have the final symbol table, we can reliably note | |
1439 | // which symbols should get warnings. | |
cb295612 | 1440 | this->warnings_.note_warnings(this); |
f6ce93d6 ILT |
1441 | |
1442 | return ret; | |
75f65a3e ILT |
1443 | } |
1444 | ||
ead1e424 ILT |
1445 | // Set the final value for all the symbols. This is called after |
1446 | // Layout::finalize, so all the output sections have their final | |
1447 | // address. | |
75f65a3e ILT |
1448 | |
1449 | template<int size> | |
1450 | off_t | |
c06b7b0b | 1451 | Symbol_table::sized_finalize(unsigned index, off_t off, Stringpool* pool) |
75f65a3e | 1452 | { |
ead1e424 | 1453 | off = align_address(off, size >> 3); |
75f65a3e ILT |
1454 | this->offset_ = off; |
1455 | ||
c06b7b0b ILT |
1456 | size_t orig_index = index; |
1457 | ||
75f65a3e | 1458 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1459 | for (Symbol_table_type::iterator p = this->table_.begin(); |
1460 | p != this->table_.end(); | |
1461 | ++p) | |
54dc6425 | 1462 | { |
75f65a3e | 1463 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 1464 | |
75f65a3e | 1465 | // FIXME: Here we need to decide which symbols should go into |
a3ad94ed ILT |
1466 | // the output file, based on --strip. |
1467 | ||
1468 | // The default version of a symbol may appear twice in the | |
1469 | // symbol table. We only need to finalize it once. | |
1470 | if (sym->has_symtab_index()) | |
1471 | continue; | |
75f65a3e | 1472 | |
008db82e ILT |
1473 | if (!sym->in_reg()) |
1474 | { | |
1475 | gold_assert(!sym->has_symtab_index()); | |
1476 | sym->set_symtab_index(-1U); | |
1477 | gold_assert(sym->dynsym_index() == -1U); | |
1478 | continue; | |
1479 | } | |
1480 | ||
ead1e424 | 1481 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 1482 | |
ead1e424 | 1483 | switch (sym->source()) |
75f65a3e | 1484 | { |
ead1e424 ILT |
1485 | case Symbol::FROM_OBJECT: |
1486 | { | |
16649710 | 1487 | unsigned int shndx = sym->shndx(); |
ead1e424 ILT |
1488 | |
1489 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1490 | if (shndx >= elfcpp::SHN_LORESERVE |
1491 | && shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1492 | { |
75f2446e | 1493 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1494 | sym->demangled_name().c_str(), shndx); |
75f2446e | 1495 | shndx = elfcpp::SHN_UNDEF; |
ead1e424 ILT |
1496 | } |
1497 | ||
f6ce93d6 ILT |
1498 | Object* symobj = sym->object(); |
1499 | if (symobj->is_dynamic()) | |
1500 | { | |
1501 | value = 0; | |
16649710 | 1502 | shndx = elfcpp::SHN_UNDEF; |
f6ce93d6 | 1503 | } |
16649710 | 1504 | else if (shndx == elfcpp::SHN_UNDEF) |
ead1e424 | 1505 | value = 0; |
16649710 | 1506 | else if (shndx == elfcpp::SHN_ABS) |
ead1e424 ILT |
1507 | value = sym->value(); |
1508 | else | |
1509 | { | |
f6ce93d6 | 1510 | Relobj* relobj = static_cast<Relobj*>(symobj); |
8383303e | 1511 | section_offset_type secoff; |
16649710 | 1512 | Output_section* os = relobj->output_section(shndx, &secoff); |
ead1e424 ILT |
1513 | |
1514 | if (os == NULL) | |
1515 | { | |
c06b7b0b | 1516 | sym->set_symtab_index(-1U); |
16649710 | 1517 | gold_assert(sym->dynsym_index() == -1U); |
ead1e424 ILT |
1518 | continue; |
1519 | } | |
1520 | ||
7bf1f802 ILT |
1521 | if (sym->type() == elfcpp::STT_TLS) |
1522 | value = sym->value() + os->tls_offset() + secoff; | |
1523 | else | |
1524 | value = sym->value() + os->address() + secoff; | |
ead1e424 ILT |
1525 | } |
1526 | } | |
1527 | break; | |
1528 | ||
1529 | case Symbol::IN_OUTPUT_DATA: | |
1530 | { | |
1531 | Output_data* od = sym->output_data(); | |
1532 | value = sym->value() + od->address(); | |
1533 | if (sym->offset_is_from_end()) | |
1534 | value += od->data_size(); | |
1535 | } | |
1536 | break; | |
1537 | ||
1538 | case Symbol::IN_OUTPUT_SEGMENT: | |
1539 | { | |
1540 | Output_segment* os = sym->output_segment(); | |
1541 | value = sym->value() + os->vaddr(); | |
1542 | switch (sym->offset_base()) | |
1543 | { | |
1544 | case Symbol::SEGMENT_START: | |
1545 | break; | |
1546 | case Symbol::SEGMENT_END: | |
1547 | value += os->memsz(); | |
1548 | break; | |
1549 | case Symbol::SEGMENT_BSS: | |
1550 | value += os->filesz(); | |
1551 | break; | |
1552 | default: | |
a3ad94ed | 1553 | gold_unreachable(); |
ead1e424 ILT |
1554 | } |
1555 | } | |
1556 | break; | |
1557 | ||
1558 | case Symbol::CONSTANT: | |
1559 | value = sym->value(); | |
1560 | break; | |
1561 | ||
1562 | default: | |
a3ad94ed | 1563 | gold_unreachable(); |
54dc6425 | 1564 | } |
ead1e424 ILT |
1565 | |
1566 | sym->set_value(value); | |
9e2dcb77 ILT |
1567 | |
1568 | if (parameters->strip_all()) | |
1569 | sym->set_symtab_index(-1U); | |
1570 | else | |
1571 | { | |
1572 | sym->set_symtab_index(index); | |
cfd73a4e | 1573 | pool->add(sym->name(), false, NULL); |
9e2dcb77 ILT |
1574 | ++index; |
1575 | off += sym_size; | |
1576 | } | |
54dc6425 | 1577 | } |
75f65a3e | 1578 | |
c06b7b0b | 1579 | this->output_count_ = index - orig_index; |
61ba1cf9 | 1580 | |
75f65a3e | 1581 | return off; |
54dc6425 ILT |
1582 | } |
1583 | ||
61ba1cf9 ILT |
1584 | // Write out the global symbols. |
1585 | ||
1586 | void | |
9a2d6984 ILT |
1587 | Symbol_table::write_globals(const Input_objects* input_objects, |
1588 | const Stringpool* sympool, | |
16649710 | 1589 | const Stringpool* dynpool, Output_file* of) const |
61ba1cf9 | 1590 | { |
9025d29d | 1591 | if (parameters->get_size() == 32) |
61ba1cf9 | 1592 | { |
9025d29d ILT |
1593 | if (parameters->is_big_endian()) |
1594 | { | |
1595 | #ifdef HAVE_TARGET_32_BIG | |
9a2d6984 ILT |
1596 | this->sized_write_globals<32, true>(input_objects, sympool, |
1597 | dynpool, of); | |
9025d29d ILT |
1598 | #else |
1599 | gold_unreachable(); | |
1600 | #endif | |
1601 | } | |
61ba1cf9 | 1602 | else |
9025d29d ILT |
1603 | { |
1604 | #ifdef HAVE_TARGET_32_LITTLE | |
9a2d6984 ILT |
1605 | this->sized_write_globals<32, false>(input_objects, sympool, |
1606 | dynpool, of); | |
9025d29d ILT |
1607 | #else |
1608 | gold_unreachable(); | |
1609 | #endif | |
1610 | } | |
61ba1cf9 | 1611 | } |
9025d29d | 1612 | else if (parameters->get_size() == 64) |
61ba1cf9 | 1613 | { |
9025d29d ILT |
1614 | if (parameters->is_big_endian()) |
1615 | { | |
1616 | #ifdef HAVE_TARGET_64_BIG | |
9a2d6984 ILT |
1617 | this->sized_write_globals<64, true>(input_objects, sympool, |
1618 | dynpool, of); | |
9025d29d ILT |
1619 | #else |
1620 | gold_unreachable(); | |
1621 | #endif | |
1622 | } | |
61ba1cf9 | 1623 | else |
9025d29d ILT |
1624 | { |
1625 | #ifdef HAVE_TARGET_64_LITTLE | |
9a2d6984 ILT |
1626 | this->sized_write_globals<64, false>(input_objects, sympool, |
1627 | dynpool, of); | |
9025d29d ILT |
1628 | #else |
1629 | gold_unreachable(); | |
1630 | #endif | |
1631 | } | |
61ba1cf9 ILT |
1632 | } |
1633 | else | |
a3ad94ed | 1634 | gold_unreachable(); |
61ba1cf9 ILT |
1635 | } |
1636 | ||
1637 | // Write out the global symbols. | |
1638 | ||
1639 | template<int size, bool big_endian> | |
1640 | void | |
9a2d6984 | 1641 | Symbol_table::sized_write_globals(const Input_objects* input_objects, |
61ba1cf9 | 1642 | const Stringpool* sympool, |
16649710 | 1643 | const Stringpool* dynpool, |
61ba1cf9 ILT |
1644 | Output_file* of) const |
1645 | { | |
9a2d6984 ILT |
1646 | const Target* const target = input_objects->target(); |
1647 | ||
61ba1cf9 | 1648 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1649 | unsigned int index = this->first_global_index_; |
1650 | const off_t oview_size = this->output_count_ * sym_size; | |
16649710 ILT |
1651 | unsigned char* const psyms = of->get_output_view(this->offset_, oview_size); |
1652 | ||
1653 | unsigned int dynamic_count = this->dynamic_count_; | |
1654 | off_t dynamic_size = dynamic_count * sym_size; | |
1655 | unsigned int first_dynamic_global_index = this->first_dynamic_global_index_; | |
1656 | unsigned char* dynamic_view; | |
1657 | if (this->dynamic_offset_ == 0) | |
1658 | dynamic_view = NULL; | |
1659 | else | |
1660 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 1661 | |
61ba1cf9 ILT |
1662 | unsigned char* ps = psyms; |
1663 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1664 | p != this->table_.end(); | |
1665 | ++p) | |
1666 | { | |
1667 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1668 | ||
9a2d6984 ILT |
1669 | // Possibly warn about unresolved symbols in shared libraries. |
1670 | this->warn_about_undefined_dynobj_symbol(input_objects, sym); | |
e2827e5f | 1671 | |
a3ad94ed | 1672 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
1673 | unsigned int dynsym_index; |
1674 | if (dynamic_view == NULL) | |
1675 | dynsym_index = -1U; | |
1676 | else | |
1677 | dynsym_index = sym->dynsym_index(); | |
1678 | ||
1679 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
1680 | { |
1681 | // This symbol is not included in the output file. | |
1682 | continue; | |
1683 | } | |
16649710 ILT |
1684 | |
1685 | if (sym_index == index) | |
1686 | ++index; | |
1687 | else if (sym_index != -1U) | |
a3ad94ed ILT |
1688 | { |
1689 | // We have already seen this symbol, because it has a | |
1690 | // default version. | |
1691 | gold_assert(sym_index < index); | |
16649710 ILT |
1692 | if (dynsym_index == -1U) |
1693 | continue; | |
1694 | sym_index = -1U; | |
a3ad94ed | 1695 | } |
c06b7b0b | 1696 | |
ead1e424 | 1697 | unsigned int shndx; |
ab5c9e90 | 1698 | typename elfcpp::Elf_types<32>::Elf_Addr value = sym->value(); |
ead1e424 ILT |
1699 | switch (sym->source()) |
1700 | { | |
1701 | case Symbol::FROM_OBJECT: | |
1702 | { | |
16649710 | 1703 | unsigned int in_shndx = sym->shndx(); |
ead1e424 ILT |
1704 | |
1705 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1706 | if (in_shndx >= elfcpp::SHN_LORESERVE |
1707 | && in_shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1708 | { |
75f2446e | 1709 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1710 | sym->demangled_name().c_str(), in_shndx); |
75f2446e | 1711 | shndx = in_shndx; |
f6ce93d6 | 1712 | } |
ead1e424 ILT |
1713 | else |
1714 | { | |
75f2446e ILT |
1715 | Object* symobj = sym->object(); |
1716 | if (symobj->is_dynamic()) | |
1717 | { | |
1718 | if (sym->needs_dynsym_value()) | |
1719 | value = target->dynsym_value(sym); | |
1720 | shndx = elfcpp::SHN_UNDEF; | |
1721 | } | |
1722 | else if (in_shndx == elfcpp::SHN_UNDEF | |
1723 | || in_shndx == elfcpp::SHN_ABS) | |
1724 | shndx = in_shndx; | |
1725 | else | |
1726 | { | |
1727 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
8383303e | 1728 | section_offset_type secoff; |
75f2446e ILT |
1729 | Output_section* os = relobj->output_section(in_shndx, |
1730 | &secoff); | |
1731 | gold_assert(os != NULL); | |
1732 | shndx = os->out_shndx(); | |
1733 | } | |
ead1e424 ILT |
1734 | } |
1735 | } | |
1736 | break; | |
1737 | ||
1738 | case Symbol::IN_OUTPUT_DATA: | |
1739 | shndx = sym->output_data()->out_shndx(); | |
1740 | break; | |
1741 | ||
1742 | case Symbol::IN_OUTPUT_SEGMENT: | |
1743 | shndx = elfcpp::SHN_ABS; | |
1744 | break; | |
1745 | ||
1746 | case Symbol::CONSTANT: | |
1747 | shndx = elfcpp::SHN_ABS; | |
1748 | break; | |
1749 | ||
1750 | default: | |
a3ad94ed | 1751 | gold_unreachable(); |
ead1e424 | 1752 | } |
61ba1cf9 | 1753 | |
16649710 ILT |
1754 | if (sym_index != -1U) |
1755 | { | |
6a469986 | 1756 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1757 | sym, sym->value(), shndx, sympool, ps |
6a469986 | 1758 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 ILT |
1759 | ps += sym_size; |
1760 | } | |
61ba1cf9 | 1761 | |
16649710 ILT |
1762 | if (dynsym_index != -1U) |
1763 | { | |
1764 | dynsym_index -= first_dynamic_global_index; | |
1765 | gold_assert(dynsym_index < dynamic_count); | |
1766 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
6a469986 | 1767 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1768 | sym, value, shndx, dynpool, pd |
6a469986 | 1769 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 | 1770 | } |
61ba1cf9 ILT |
1771 | } |
1772 | ||
a3ad94ed | 1773 | gold_assert(ps - psyms == oview_size); |
c06b7b0b ILT |
1774 | |
1775 | of->write_output_view(this->offset_, oview_size, psyms); | |
16649710 ILT |
1776 | if (dynamic_view != NULL) |
1777 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
1778 | } | |
1779 | ||
1780 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
1781 | // strtab holding the name. | |
1782 | ||
1783 | template<int size, bool big_endian> | |
1784 | void | |
ab5c9e90 ILT |
1785 | Symbol_table::sized_write_symbol( |
1786 | Sized_symbol<size>* sym, | |
1787 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1788 | unsigned int shndx, | |
1789 | const Stringpool* pool, | |
1790 | unsigned char* p | |
1791 | ACCEPT_SIZE_ENDIAN) const | |
16649710 ILT |
1792 | { |
1793 | elfcpp::Sym_write<size, big_endian> osym(p); | |
1794 | osym.put_st_name(pool->get_offset(sym->name())); | |
ab5c9e90 | 1795 | osym.put_st_value(value); |
16649710 ILT |
1796 | osym.put_st_size(sym->symsize()); |
1797 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
1798 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); | |
1799 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1800 | } |
1801 | ||
9a2d6984 ILT |
1802 | // Check for unresolved symbols in shared libraries. This is |
1803 | // controlled by the --allow-shlib-undefined option. | |
1804 | ||
1805 | // We only warn about libraries for which we have seen all the | |
1806 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
1807 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
1808 | // entry, we aren't going to be able to reliably report whether the | |
1809 | // symbol is undefined. | |
1810 | ||
1811 | // We also don't warn about libraries found in the system library | |
1812 | // directory (the directory were we find libc.so); we assume that | |
1813 | // those libraries are OK. This heuristic avoids problems in | |
1814 | // GNU/Linux, in which -ldl can have undefined references satisfied by | |
1815 | // ld-linux.so. | |
1816 | ||
1817 | inline void | |
1818 | Symbol_table::warn_about_undefined_dynobj_symbol( | |
1819 | const Input_objects* input_objects, | |
1820 | Symbol* sym) const | |
1821 | { | |
1822 | if (sym->source() == Symbol::FROM_OBJECT | |
1823 | && sym->object()->is_dynamic() | |
1824 | && sym->shndx() == elfcpp::SHN_UNDEF | |
1825 | && sym->binding() != elfcpp::STB_WEAK | |
1826 | && !parameters->allow_shlib_undefined() | |
1827 | && !input_objects->target()->is_defined_by_abi(sym) | |
1828 | && !input_objects->found_in_system_library_directory(sym->object())) | |
1829 | { | |
1830 | // A very ugly cast. | |
1831 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
1832 | if (!dynobj->has_unknown_needed_entries()) | |
1833 | gold_error(_("%s: undefined reference to '%s'"), | |
a2b1aa12 ILT |
1834 | sym->object()->name().c_str(), |
1835 | sym->demangled_name().c_str()); | |
9a2d6984 ILT |
1836 | } |
1837 | } | |
1838 | ||
a3ad94ed ILT |
1839 | // Write out a section symbol. Return the update offset. |
1840 | ||
1841 | void | |
9025d29d | 1842 | Symbol_table::write_section_symbol(const Output_section *os, |
a3ad94ed ILT |
1843 | Output_file* of, |
1844 | off_t offset) const | |
1845 | { | |
9025d29d | 1846 | if (parameters->get_size() == 32) |
a3ad94ed | 1847 | { |
9025d29d ILT |
1848 | if (parameters->is_big_endian()) |
1849 | { | |
1850 | #ifdef HAVE_TARGET_32_BIG | |
1851 | this->sized_write_section_symbol<32, true>(os, of, offset); | |
1852 | #else | |
1853 | gold_unreachable(); | |
1854 | #endif | |
1855 | } | |
a3ad94ed | 1856 | else |
9025d29d ILT |
1857 | { |
1858 | #ifdef HAVE_TARGET_32_LITTLE | |
1859 | this->sized_write_section_symbol<32, false>(os, of, offset); | |
1860 | #else | |
1861 | gold_unreachable(); | |
1862 | #endif | |
1863 | } | |
a3ad94ed | 1864 | } |
9025d29d | 1865 | else if (parameters->get_size() == 64) |
a3ad94ed | 1866 | { |
9025d29d ILT |
1867 | if (parameters->is_big_endian()) |
1868 | { | |
1869 | #ifdef HAVE_TARGET_64_BIG | |
1870 | this->sized_write_section_symbol<64, true>(os, of, offset); | |
1871 | #else | |
1872 | gold_unreachable(); | |
1873 | #endif | |
1874 | } | |
a3ad94ed | 1875 | else |
9025d29d ILT |
1876 | { |
1877 | #ifdef HAVE_TARGET_64_LITTLE | |
1878 | this->sized_write_section_symbol<64, false>(os, of, offset); | |
1879 | #else | |
1880 | gold_unreachable(); | |
1881 | #endif | |
1882 | } | |
a3ad94ed ILT |
1883 | } |
1884 | else | |
1885 | gold_unreachable(); | |
1886 | } | |
1887 | ||
1888 | // Write out a section symbol, specialized for size and endianness. | |
1889 | ||
1890 | template<int size, bool big_endian> | |
1891 | void | |
1892 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
1893 | Output_file* of, | |
1894 | off_t offset) const | |
1895 | { | |
1896 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1897 | ||
1898 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
1899 | ||
1900 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
1901 | osym.put_st_name(0); | |
1902 | osym.put_st_value(os->address()); | |
1903 | osym.put_st_size(0); | |
1904 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
1905 | elfcpp::STT_SECTION)); | |
1906 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
1907 | osym.put_st_shndx(os->out_shndx()); | |
1908 | ||
1909 | of->write_output_view(offset, sym_size, pov); | |
1910 | } | |
1911 | ||
abaa3995 ILT |
1912 | // Print statistical information to stderr. This is used for --stats. |
1913 | ||
1914 | void | |
1915 | Symbol_table::print_stats() const | |
1916 | { | |
1917 | #if defined(HAVE_TR1_UNORDERED_MAP) || defined(HAVE_EXT_HASH_MAP) | |
1918 | fprintf(stderr, _("%s: symbol table entries: %zu; buckets: %zu\n"), | |
1919 | program_name, this->table_.size(), this->table_.bucket_count()); | |
1920 | #else | |
1921 | fprintf(stderr, _("%s: symbol table entries: %zu\n"), | |
1922 | program_name, this->table_.size()); | |
1923 | #endif | |
ad8f37d1 | 1924 | this->namepool_.print_stats("symbol table stringpool"); |
abaa3995 ILT |
1925 | } |
1926 | ||
ff541f30 ILT |
1927 | // We check for ODR violations by looking for symbols with the same |
1928 | // name for which the debugging information reports that they were | |
1929 | // defined in different source locations. When comparing the source | |
1930 | // location, we consider instances with the same base filename and | |
1931 | // line number to be the same. This is because different object | |
1932 | // files/shared libraries can include the same header file using | |
1933 | // different paths, and we don't want to report an ODR violation in | |
1934 | // that case. | |
1935 | ||
1936 | // This struct is used to compare line information, as returned by | |
7bf1f802 | 1937 | // Dwarf_line_info::one_addr2line. It implements a < comparison |
ff541f30 ILT |
1938 | // operator used with std::set. |
1939 | ||
1940 | struct Odr_violation_compare | |
1941 | { | |
1942 | bool | |
1943 | operator()(const std::string& s1, const std::string& s2) const | |
1944 | { | |
1945 | std::string::size_type pos1 = s1.rfind('/'); | |
1946 | std::string::size_type pos2 = s2.rfind('/'); | |
1947 | if (pos1 == std::string::npos | |
1948 | || pos2 == std::string::npos) | |
1949 | return s1 < s2; | |
1950 | return s1.compare(pos1, std::string::npos, | |
1951 | s2, pos2, std::string::npos) < 0; | |
1952 | } | |
1953 | }; | |
1954 | ||
70e654ba ILT |
1955 | // Check candidate_odr_violations_ to find symbols with the same name |
1956 | // but apparently different definitions (different source-file/line-no). | |
1957 | ||
1958 | void | |
17a1d0a9 ILT |
1959 | Symbol_table::detect_odr_violations(const Task* task, |
1960 | const char* output_file_name) const | |
70e654ba ILT |
1961 | { |
1962 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
1963 | it != candidate_odr_violations_.end(); | |
1964 | ++it) | |
1965 | { | |
1966 | const char* symbol_name = it->first; | |
1967 | // We use a sorted set so the output is deterministic. | |
ff541f30 | 1968 | std::set<std::string, Odr_violation_compare> line_nums; |
70e654ba | 1969 | |
b01c0a4a ILT |
1970 | for (Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator |
1971 | locs = it->second.begin(); | |
1972 | locs != it->second.end(); | |
1973 | ++locs) | |
70e654ba ILT |
1974 | { |
1975 | // We need to lock the object in order to read it. This | |
17a1d0a9 ILT |
1976 | // means that we have to run in a singleton Task. If we |
1977 | // want to run this in a general Task for better | |
1978 | // performance, we will need one Task for object, plus | |
1979 | // appropriate locking to ensure that we don't conflict with | |
1980 | // other uses of the object. | |
1981 | Task_lock_obj<Object> tl(task, locs->object); | |
a55ce7fe ILT |
1982 | std::string lineno = Dwarf_line_info::one_addr2line( |
1983 | locs->object, locs->shndx, locs->offset); | |
70e654ba ILT |
1984 | if (!lineno.empty()) |
1985 | line_nums.insert(lineno); | |
1986 | } | |
1987 | ||
1988 | if (line_nums.size() > 1) | |
1989 | { | |
dd8670e5 | 1990 | gold_warning(_("while linking %s: symbol '%s' defined in multiple " |
78f15696 | 1991 | "places (possible ODR violation):"), |
a2b1aa12 | 1992 | output_file_name, demangle(symbol_name).c_str()); |
70e654ba ILT |
1993 | for (std::set<std::string>::const_iterator it2 = line_nums.begin(); |
1994 | it2 != line_nums.end(); | |
1995 | ++it2) | |
1996 | fprintf(stderr, " %s\n", it2->c_str()); | |
1997 | } | |
1998 | } | |
1999 | } | |
2000 | ||
f6ce93d6 ILT |
2001 | // Warnings functions. |
2002 | ||
2003 | // Add a new warning. | |
2004 | ||
2005 | void | |
2006 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
cb295612 | 2007 | const std::string& warning) |
f6ce93d6 ILT |
2008 | { |
2009 | name = symtab->canonicalize_name(name); | |
cb295612 | 2010 | this->warnings_[name].set(obj, warning); |
f6ce93d6 ILT |
2011 | } |
2012 | ||
2013 | // Look through the warnings and mark the symbols for which we should | |
2014 | // warn. This is called during Layout::finalize when we know the | |
2015 | // sources for all the symbols. | |
2016 | ||
2017 | void | |
cb295612 | 2018 | Warnings::note_warnings(Symbol_table* symtab) |
f6ce93d6 ILT |
2019 | { |
2020 | for (Warning_table::iterator p = this->warnings_.begin(); | |
2021 | p != this->warnings_.end(); | |
2022 | ++p) | |
2023 | { | |
2024 | Symbol* sym = symtab->lookup(p->first, NULL); | |
2025 | if (sym != NULL | |
2026 | && sym->source() == Symbol::FROM_OBJECT | |
2027 | && sym->object() == p->second.object) | |
cb295612 | 2028 | sym->set_has_warning(); |
f6ce93d6 ILT |
2029 | } |
2030 | } | |
2031 | ||
2032 | // Issue a warning. This is called when we see a relocation against a | |
2033 | // symbol for which has a warning. | |
2034 | ||
75f2446e | 2035 | template<int size, bool big_endian> |
f6ce93d6 | 2036 | void |
75f2446e ILT |
2037 | Warnings::issue_warning(const Symbol* sym, |
2038 | const Relocate_info<size, big_endian>* relinfo, | |
2039 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 2040 | { |
a3ad94ed | 2041 | gold_assert(sym->has_warning()); |
f6ce93d6 | 2042 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 2043 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
2044 | gold_warning_at_location(relinfo, relnum, reloffset, |
2045 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
2046 | } |
2047 | ||
14bfc3f5 ILT |
2048 | // Instantiate the templates we need. We could use the configure |
2049 | // script to restrict this to only the ones needed for implemented | |
2050 | // targets. | |
2051 | ||
c7912668 ILT |
2052 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2053 | template | |
2054 | void | |
2055 | Sized_symbol<32>::allocate_common(Output_data*, Value_type); | |
2056 | #endif | |
2057 | ||
2058 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2059 | template | |
2060 | void | |
2061 | Sized_symbol<64>::allocate_common(Output_data*, Value_type); | |
2062 | #endif | |
2063 | ||
193a53d9 | 2064 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
2065 | template |
2066 | void | |
193a53d9 ILT |
2067 | Symbol_table::add_from_relobj<32, false>( |
2068 | Sized_relobj<32, false>* relobj, | |
f6ce93d6 | 2069 | const unsigned char* syms, |
14bfc3f5 ILT |
2070 | size_t count, |
2071 | const char* sym_names, | |
2072 | size_t sym_name_size, | |
730cdc88 | 2073 | Sized_relobj<32, true>::Symbols* sympointers); |
193a53d9 | 2074 | #endif |
14bfc3f5 | 2075 | |
193a53d9 | 2076 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
2077 | template |
2078 | void | |
193a53d9 ILT |
2079 | Symbol_table::add_from_relobj<32, true>( |
2080 | Sized_relobj<32, true>* relobj, | |
f6ce93d6 | 2081 | const unsigned char* syms, |
14bfc3f5 ILT |
2082 | size_t count, |
2083 | const char* sym_names, | |
2084 | size_t sym_name_size, | |
730cdc88 | 2085 | Sized_relobj<32, false>::Symbols* sympointers); |
193a53d9 | 2086 | #endif |
14bfc3f5 | 2087 | |
193a53d9 | 2088 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
2089 | template |
2090 | void | |
193a53d9 ILT |
2091 | Symbol_table::add_from_relobj<64, false>( |
2092 | Sized_relobj<64, false>* relobj, | |
f6ce93d6 | 2093 | const unsigned char* syms, |
14bfc3f5 ILT |
2094 | size_t count, |
2095 | const char* sym_names, | |
2096 | size_t sym_name_size, | |
730cdc88 | 2097 | Sized_relobj<64, true>::Symbols* sympointers); |
193a53d9 | 2098 | #endif |
14bfc3f5 | 2099 | |
193a53d9 | 2100 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
2101 | template |
2102 | void | |
193a53d9 ILT |
2103 | Symbol_table::add_from_relobj<64, true>( |
2104 | Sized_relobj<64, true>* relobj, | |
f6ce93d6 | 2105 | const unsigned char* syms, |
14bfc3f5 ILT |
2106 | size_t count, |
2107 | const char* sym_names, | |
2108 | size_t sym_name_size, | |
730cdc88 | 2109 | Sized_relobj<64, false>::Symbols* sympointers); |
193a53d9 | 2110 | #endif |
14bfc3f5 | 2111 | |
193a53d9 | 2112 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
2113 | template |
2114 | void | |
193a53d9 ILT |
2115 | Symbol_table::add_from_dynobj<32, false>( |
2116 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
2117 | const unsigned char* syms, |
2118 | size_t count, | |
2119 | const char* sym_names, | |
2120 | size_t sym_name_size, | |
2121 | const unsigned char* versym, | |
2122 | size_t versym_size, | |
2123 | const std::vector<const char*>* version_map); | |
193a53d9 | 2124 | #endif |
dbe717ef | 2125 | |
193a53d9 | 2126 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
2127 | template |
2128 | void | |
193a53d9 ILT |
2129 | Symbol_table::add_from_dynobj<32, true>( |
2130 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
2131 | const unsigned char* syms, |
2132 | size_t count, | |
2133 | const char* sym_names, | |
2134 | size_t sym_name_size, | |
2135 | const unsigned char* versym, | |
2136 | size_t versym_size, | |
2137 | const std::vector<const char*>* version_map); | |
193a53d9 | 2138 | #endif |
dbe717ef | 2139 | |
193a53d9 | 2140 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
2141 | template |
2142 | void | |
193a53d9 ILT |
2143 | Symbol_table::add_from_dynobj<64, false>( |
2144 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
2145 | const unsigned char* syms, |
2146 | size_t count, | |
2147 | const char* sym_names, | |
2148 | size_t sym_name_size, | |
2149 | const unsigned char* versym, | |
2150 | size_t versym_size, | |
2151 | const std::vector<const char*>* version_map); | |
193a53d9 | 2152 | #endif |
dbe717ef | 2153 | |
193a53d9 | 2154 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
2155 | template |
2156 | void | |
193a53d9 ILT |
2157 | Symbol_table::add_from_dynobj<64, true>( |
2158 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
2159 | const unsigned char* syms, |
2160 | size_t count, | |
2161 | const char* sym_names, | |
2162 | size_t sym_name_size, | |
2163 | const unsigned char* versym, | |
2164 | size_t versym_size, | |
2165 | const std::vector<const char*>* version_map); | |
193a53d9 | 2166 | #endif |
dbe717ef | 2167 | |
46fe1623 ILT |
2168 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2169 | template | |
2170 | void | |
fe8718a4 ILT |
2171 | Symbol_table::define_with_copy_reloc<32>( |
2172 | const Target* target, | |
2173 | Sized_symbol<32>* sym, | |
2174 | Output_data* posd, | |
2175 | elfcpp::Elf_types<32>::Elf_Addr value); | |
46fe1623 ILT |
2176 | #endif |
2177 | ||
2178 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2179 | template | |
2180 | void | |
fe8718a4 ILT |
2181 | Symbol_table::define_with_copy_reloc<64>( |
2182 | const Target* target, | |
2183 | Sized_symbol<64>* sym, | |
2184 | Output_data* posd, | |
2185 | elfcpp::Elf_types<64>::Elf_Addr value); | |
46fe1623 ILT |
2186 | #endif |
2187 | ||
75f2446e ILT |
2188 | #ifdef HAVE_TARGET_32_LITTLE |
2189 | template | |
2190 | void | |
2191 | Warnings::issue_warning<32, false>(const Symbol* sym, | |
2192 | const Relocate_info<32, false>* relinfo, | |
2193 | size_t relnum, off_t reloffset) const; | |
2194 | #endif | |
2195 | ||
2196 | #ifdef HAVE_TARGET_32_BIG | |
2197 | template | |
2198 | void | |
2199 | Warnings::issue_warning<32, true>(const Symbol* sym, | |
2200 | const Relocate_info<32, true>* relinfo, | |
2201 | size_t relnum, off_t reloffset) const; | |
2202 | #endif | |
2203 | ||
2204 | #ifdef HAVE_TARGET_64_LITTLE | |
2205 | template | |
2206 | void | |
2207 | Warnings::issue_warning<64, false>(const Symbol* sym, | |
2208 | const Relocate_info<64, false>* relinfo, | |
2209 | size_t relnum, off_t reloffset) const; | |
2210 | #endif | |
2211 | ||
2212 | #ifdef HAVE_TARGET_64_BIG | |
2213 | template | |
2214 | void | |
2215 | Warnings::issue_warning<64, true>(const Symbol* sym, | |
2216 | const Relocate_info<64, true>* relinfo, | |
2217 | size_t relnum, off_t reloffset) const; | |
2218 | #endif | |
2219 | ||
14bfc3f5 | 2220 | } // End namespace gold. |