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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 | ||
298 | Symbol_table::Symbol_table() | |
9025d29d | 299 | : saw_undefined_(0), offset_(0), table_(), namepool_(), |
f6ce93d6 | 300 | forwarders_(), commons_(), warnings_() |
14bfc3f5 ILT |
301 | { |
302 | } | |
303 | ||
304 | Symbol_table::~Symbol_table() | |
305 | { | |
306 | } | |
307 | ||
ad8f37d1 | 308 | // The hash function. The key values are Stringpool keys. |
14bfc3f5 | 309 | |
ad8f37d1 | 310 | inline size_t |
14bfc3f5 ILT |
311 | Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key& key) const |
312 | { | |
f0641a0b | 313 | return key.first ^ key.second; |
14bfc3f5 ILT |
314 | } |
315 | ||
ad8f37d1 ILT |
316 | // The symbol table key equality function. This is called with |
317 | // Stringpool keys. | |
14bfc3f5 | 318 | |
ad8f37d1 | 319 | inline bool |
14bfc3f5 ILT |
320 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, |
321 | const Symbol_table_key& k2) const | |
322 | { | |
323 | return k1.first == k2.first && k1.second == k2.second; | |
324 | } | |
325 | ||
dd8670e5 | 326 | // Make TO a symbol which forwards to FROM. |
14bfc3f5 ILT |
327 | |
328 | void | |
329 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
330 | { | |
a3ad94ed ILT |
331 | gold_assert(from != to); |
332 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
333 | this->forwarders_[from] = to; |
334 | from->set_forwarder(); | |
335 | } | |
336 | ||
61ba1cf9 ILT |
337 | // Resolve the forwards from FROM, returning the real symbol. |
338 | ||
14bfc3f5 | 339 | Symbol* |
c06b7b0b | 340 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 341 | { |
a3ad94ed | 342 | gold_assert(from->is_forwarder()); |
c06b7b0b | 343 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 344 | this->forwarders_.find(from); |
a3ad94ed | 345 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
346 | return p->second; |
347 | } | |
348 | ||
61ba1cf9 ILT |
349 | // Look up a symbol by name. |
350 | ||
351 | Symbol* | |
352 | Symbol_table::lookup(const char* name, const char* version) const | |
353 | { | |
f0641a0b ILT |
354 | Stringpool::Key name_key; |
355 | name = this->namepool_.find(name, &name_key); | |
61ba1cf9 ILT |
356 | if (name == NULL) |
357 | return NULL; | |
f0641a0b ILT |
358 | |
359 | Stringpool::Key version_key = 0; | |
61ba1cf9 ILT |
360 | if (version != NULL) |
361 | { | |
f0641a0b | 362 | version = this->namepool_.find(version, &version_key); |
61ba1cf9 ILT |
363 | if (version == NULL) |
364 | return NULL; | |
365 | } | |
366 | ||
f0641a0b | 367 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
368 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
369 | if (p == this->table_.end()) | |
370 | return NULL; | |
371 | return p->second; | |
372 | } | |
373 | ||
14bfc3f5 ILT |
374 | // Resolve a Symbol with another Symbol. This is only used in the |
375 | // unusual case where there are references to both an unversioned | |
376 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
377 | // version is the default version. Because this is unusual, we do |
378 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 379 | |
1564db8d | 380 | template<int size, bool big_endian> |
14bfc3f5 | 381 | void |
14b31740 ILT |
382 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from, |
383 | const char* version ACCEPT_SIZE_ENDIAN) | |
14bfc3f5 | 384 | { |
1564db8d ILT |
385 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
386 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
387 | // We don't bother to set the st_name field. | |
388 | esym.put_st_value(from->value()); | |
389 | esym.put_st_size(from->symsize()); | |
390 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 391 | esym.put_st_other(from->visibility(), from->nonvis()); |
16649710 | 392 | esym.put_st_shndx(from->shndx()); |
70e654ba | 393 | this->resolve(to, esym.sym(), esym.sym(), from->object(), version); |
1ebd95fd ILT |
394 | if (from->in_reg()) |
395 | to->set_in_reg(); | |
396 | if (from->in_dyn()) | |
397 | to->set_in_dyn(); | |
14bfc3f5 ILT |
398 | } |
399 | ||
400 | // Add one symbol from OBJECT to the symbol table. NAME is symbol | |
401 | // name and VERSION is the version; both are canonicalized. DEF is | |
402 | // whether this is the default version. | |
403 | ||
404 | // If DEF is true, then this is the definition of a default version of | |
405 | // a symbol. That means that any lookup of NAME/NULL and any lookup | |
406 | // of NAME/VERSION should always return the same symbol. This is | |
407 | // obvious for references, but in particular we want to do this for | |
408 | // definitions: overriding NAME/NULL should also override | |
409 | // NAME/VERSION. If we don't do that, it would be very hard to | |
410 | // override functions in a shared library which uses versioning. | |
411 | ||
412 | // We implement this by simply making both entries in the hash table | |
413 | // point to the same Symbol structure. That is easy enough if this is | |
414 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
415 | // that we have seen both already, in which case they will both have | |
416 | // independent entries in the symbol table. We can't simply change | |
417 | // the symbol table entry, because we have pointers to the entries | |
418 | // attached to the object files. So we mark the entry attached to the | |
419 | // object file as a forwarder, and record it in the forwarders_ map. | |
420 | // Note that entries in the hash table will never be marked as | |
421 | // forwarders. | |
70e654ba ILT |
422 | // |
423 | // SYM and ORIG_SYM are almost always the same. ORIG_SYM is the | |
424 | // symbol exactly as it existed in the input file. SYM is usually | |
425 | // that as well, but can be modified, for instance if we determine | |
426 | // it's in a to-be-discarded section. | |
14bfc3f5 ILT |
427 | |
428 | template<int size, bool big_endian> | |
aeddab66 | 429 | Sized_symbol<size>* |
f6ce93d6 | 430 | Symbol_table::add_from_object(Object* object, |
14bfc3f5 | 431 | const char *name, |
f0641a0b ILT |
432 | Stringpool::Key name_key, |
433 | const char *version, | |
434 | Stringpool::Key version_key, | |
435 | bool def, | |
70e654ba ILT |
436 | const elfcpp::Sym<size, big_endian>& sym, |
437 | const elfcpp::Sym<size, big_endian>& orig_sym) | |
14bfc3f5 ILT |
438 | { |
439 | Symbol* const snull = NULL; | |
440 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
441 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
442 | snull)); | |
14bfc3f5 ILT |
443 | |
444 | std::pair<typename Symbol_table_type::iterator, bool> insdef = | |
445 | std::make_pair(this->table_.end(), false); | |
446 | if (def) | |
447 | { | |
f0641a0b ILT |
448 | const Stringpool::Key vnull_key = 0; |
449 | insdef = this->table_.insert(std::make_pair(std::make_pair(name_key, | |
450 | vnull_key), | |
14bfc3f5 ILT |
451 | snull)); |
452 | } | |
453 | ||
454 | // ins.first: an iterator, which is a pointer to a pair. | |
455 | // ins.first->first: the key (a pair of name and version). | |
456 | // ins.first->second: the value (Symbol*). | |
457 | // ins.second: true if new entry was inserted, false if not. | |
458 | ||
1564db8d | 459 | Sized_symbol<size>* ret; |
ead1e424 ILT |
460 | bool was_undefined; |
461 | bool was_common; | |
14bfc3f5 ILT |
462 | if (!ins.second) |
463 | { | |
464 | // We already have an entry for NAME/VERSION. | |
593f47df ILT |
465 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) (ins.first->second |
466 | SELECT_SIZE(size)); | |
a3ad94ed | 467 | gold_assert(ret != NULL); |
ead1e424 ILT |
468 | |
469 | was_undefined = ret->is_undefined(); | |
470 | was_common = ret->is_common(); | |
471 | ||
70e654ba | 472 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
473 | |
474 | if (def) | |
475 | { | |
476 | if (insdef.second) | |
477 | { | |
478 | // This is the first time we have seen NAME/NULL. Make | |
479 | // NAME/NULL point to NAME/VERSION. | |
480 | insdef.first->second = ret; | |
481 | } | |
dbe717ef | 482 | else if (insdef.first->second != ret) |
14bfc3f5 ILT |
483 | { |
484 | // This is the unfortunate case where we already have | |
485 | // entries for both NAME/VERSION and NAME/NULL. | |
274e99f9 | 486 | const Sized_symbol<size>* sym2; |
593f47df | 487 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
488 | insdef.first->second |
489 | SELECT_SIZE(size)); | |
593f47df | 490 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
14b31740 | 491 | ret, sym2, version SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
492 | this->make_forwarder(insdef.first->second, ret); |
493 | insdef.first->second = ret; | |
494 | } | |
495 | } | |
496 | } | |
497 | else | |
498 | { | |
499 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 500 | gold_assert(ins.first->second == NULL); |
ead1e424 ILT |
501 | |
502 | was_undefined = false; | |
503 | was_common = false; | |
504 | ||
14bfc3f5 ILT |
505 | if (def && !insdef.second) |
506 | { | |
14b31740 ILT |
507 | // We already have an entry for NAME/NULL. If we override |
508 | // it, then change it to NAME/VERSION. | |
593f47df ILT |
509 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
510 | insdef.first->second | |
511 | SELECT_SIZE(size)); | |
70e654ba | 512 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
513 | ins.first->second = ret; |
514 | } | |
515 | else | |
516 | { | |
f6ce93d6 ILT |
517 | Sized_target<size, big_endian>* target = |
518 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
519 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
520 | if (!target->has_make_symbol()) |
521 | ret = new Sized_symbol<size>(); | |
522 | else | |
14bfc3f5 | 523 | { |
1564db8d ILT |
524 | ret = target->make_symbol(); |
525 | if (ret == NULL) | |
14bfc3f5 ILT |
526 | { |
527 | // This means that we don't want a symbol table | |
528 | // entry after all. | |
529 | if (!def) | |
530 | this->table_.erase(ins.first); | |
531 | else | |
532 | { | |
533 | this->table_.erase(insdef.first); | |
534 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
535 | this->table_.erase(std::make_pair(name_key, |
536 | version_key)); | |
14bfc3f5 ILT |
537 | } |
538 | return NULL; | |
539 | } | |
540 | } | |
14bfc3f5 | 541 | |
1564db8d ILT |
542 | ret->init(name, version, object, sym); |
543 | ||
14bfc3f5 ILT |
544 | ins.first->second = ret; |
545 | if (def) | |
546 | { | |
547 | // This is the first time we have seen NAME/NULL. Point | |
548 | // it at the new entry for NAME/VERSION. | |
a3ad94ed | 549 | gold_assert(insdef.second); |
14bfc3f5 ILT |
550 | insdef.first->second = ret; |
551 | } | |
552 | } | |
553 | } | |
554 | ||
ead1e424 ILT |
555 | // Record every time we see a new undefined symbol, to speed up |
556 | // archive groups. | |
557 | if (!was_undefined && ret->is_undefined()) | |
558 | ++this->saw_undefined_; | |
559 | ||
560 | // Keep track of common symbols, to speed up common symbol | |
561 | // allocation. | |
562 | if (!was_common && ret->is_common()) | |
563 | this->commons_.push_back(ret); | |
564 | ||
14bfc3f5 ILT |
565 | return ret; |
566 | } | |
567 | ||
f6ce93d6 | 568 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
569 | |
570 | template<int size, bool big_endian> | |
571 | void | |
dbe717ef ILT |
572 | Symbol_table::add_from_relobj( |
573 | Sized_relobj<size, big_endian>* relobj, | |
f6ce93d6 | 574 | const unsigned char* syms, |
14bfc3f5 ILT |
575 | size_t count, |
576 | const char* sym_names, | |
577 | size_t sym_name_size, | |
730cdc88 | 578 | typename Sized_relobj<size, big_endian>::Symbols* sympointers) |
14bfc3f5 | 579 | { |
9025d29d ILT |
580 | gold_assert(size == relobj->target()->get_size()); |
581 | gold_assert(size == parameters->get_size()); | |
14bfc3f5 | 582 | |
a783673b ILT |
583 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
584 | ||
f6ce93d6 | 585 | const unsigned char* p = syms; |
a783673b | 586 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
587 | { |
588 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 589 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 590 | |
a783673b | 591 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
592 | if (st_name >= sym_name_size) |
593 | { | |
75f2446e ILT |
594 | relobj->error(_("bad global symbol name offset %u at %zu"), |
595 | st_name, i); | |
596 | continue; | |
14bfc3f5 ILT |
597 | } |
598 | ||
dbe717ef ILT |
599 | const char* name = sym_names + st_name; |
600 | ||
a783673b ILT |
601 | // A symbol defined in a section which we are not including must |
602 | // be treated as an undefined symbol. | |
603 | unsigned char symbuf[sym_size]; | |
604 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
605 | unsigned int st_shndx = psym->get_st_shndx(); | |
606 | if (st_shndx != elfcpp::SHN_UNDEF | |
607 | && st_shndx < elfcpp::SHN_LORESERVE | |
dbe717ef | 608 | && !relobj->is_section_included(st_shndx)) |
a783673b ILT |
609 | { |
610 | memcpy(symbuf, p, sym_size); | |
611 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
612 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
613 | psym = &sym2; | |
614 | } | |
615 | ||
14bfc3f5 ILT |
616 | // In an object file, an '@' in the name separates the symbol |
617 | // name from the version name. If there are two '@' characters, | |
618 | // this is the default version. | |
619 | const char* ver = strchr(name, '@'); | |
620 | ||
aeddab66 | 621 | Sized_symbol<size>* res; |
14bfc3f5 ILT |
622 | if (ver == NULL) |
623 | { | |
f0641a0b | 624 | Stringpool::Key name_key; |
cfd73a4e | 625 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 626 | res = this->add_from_object(relobj, name, name_key, NULL, 0, |
70e654ba | 627 | false, *psym, sym); |
14bfc3f5 ILT |
628 | } |
629 | else | |
630 | { | |
f0641a0b | 631 | Stringpool::Key name_key; |
cfd73a4e | 632 | name = this->namepool_.add_prefix(name, ver - name, &name_key); |
f0641a0b | 633 | |
14bfc3f5 ILT |
634 | bool def = false; |
635 | ++ver; | |
636 | if (*ver == '@') | |
637 | { | |
638 | def = true; | |
639 | ++ver; | |
640 | } | |
f0641a0b ILT |
641 | |
642 | Stringpool::Key ver_key; | |
cfd73a4e | 643 | ver = this->namepool_.add(ver, true, &ver_key); |
f0641a0b | 644 | |
dbe717ef | 645 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
70e654ba | 646 | def, *psym, sym); |
14bfc3f5 ILT |
647 | } |
648 | ||
730cdc88 | 649 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
650 | } |
651 | } | |
652 | ||
dbe717ef ILT |
653 | // Add all the symbols in a dynamic object to the hash table. |
654 | ||
655 | template<int size, bool big_endian> | |
656 | void | |
657 | Symbol_table::add_from_dynobj( | |
658 | Sized_dynobj<size, big_endian>* dynobj, | |
659 | const unsigned char* syms, | |
660 | size_t count, | |
661 | const char* sym_names, | |
662 | size_t sym_name_size, | |
663 | const unsigned char* versym, | |
664 | size_t versym_size, | |
665 | const std::vector<const char*>* version_map) | |
666 | { | |
9025d29d ILT |
667 | gold_assert(size == dynobj->target()->get_size()); |
668 | gold_assert(size == parameters->get_size()); | |
dbe717ef ILT |
669 | |
670 | if (versym != NULL && versym_size / 2 < count) | |
671 | { | |
75f2446e ILT |
672 | dynobj->error(_("too few symbol versions")); |
673 | return; | |
dbe717ef ILT |
674 | } |
675 | ||
676 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
677 | ||
aeddab66 ILT |
678 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
679 | // weak aliases. This is necessary because if the dynamic object | |
680 | // provides the same variable under two names, one of which is a | |
681 | // weak definition, and the regular object refers to the weak | |
682 | // definition, we have to put both the weak definition and the | |
683 | // strong definition into the dynamic symbol table. Given a weak | |
684 | // definition, the only way that we can find the corresponding | |
685 | // strong definition, if any, is to search the symbol table. | |
686 | std::vector<Sized_symbol<size>*> object_symbols; | |
687 | ||
dbe717ef ILT |
688 | const unsigned char* p = syms; |
689 | const unsigned char* vs = versym; | |
690 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
691 | { | |
692 | elfcpp::Sym<size, big_endian> sym(p); | |
693 | ||
694 | // Ignore symbols with local binding. | |
695 | if (sym.get_st_bind() == elfcpp::STB_LOCAL) | |
696 | continue; | |
697 | ||
698 | unsigned int st_name = sym.get_st_name(); | |
699 | if (st_name >= sym_name_size) | |
700 | { | |
75f2446e ILT |
701 | dynobj->error(_("bad symbol name offset %u at %zu"), |
702 | st_name, i); | |
703 | continue; | |
dbe717ef ILT |
704 | } |
705 | ||
706 | const char* name = sym_names + st_name; | |
707 | ||
aeddab66 ILT |
708 | Sized_symbol<size>* res; |
709 | ||
dbe717ef ILT |
710 | if (versym == NULL) |
711 | { | |
712 | Stringpool::Key name_key; | |
cfd73a4e | 713 | name = this->namepool_.add(name, true, &name_key); |
aeddab66 | 714 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
70e654ba | 715 | false, sym, sym); |
dbe717ef | 716 | } |
aeddab66 ILT |
717 | else |
718 | { | |
719 | // Read the version information. | |
dbe717ef | 720 | |
aeddab66 | 721 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 722 | |
aeddab66 ILT |
723 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
724 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 725 | |
aeddab66 ILT |
726 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
727 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
728 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
729 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
730 | // for an undefined symbol. I don't know what the Sun | |
731 | // linker will generate. | |
dbe717ef | 732 | |
aeddab66 ILT |
733 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
734 | && sym.get_st_shndx() != elfcpp::SHN_UNDEF) | |
735 | { | |
736 | // This symbol should not be visible outside the object. | |
737 | continue; | |
738 | } | |
64707334 | 739 | |
aeddab66 ILT |
740 | // At this point we are definitely going to add this symbol. |
741 | Stringpool::Key name_key; | |
742 | name = this->namepool_.add(name, true, &name_key); | |
dbe717ef | 743 | |
aeddab66 ILT |
744 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
745 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
746 | { | |
747 | // This symbol does not have a version. | |
748 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 749 | false, sym, sym); |
aeddab66 ILT |
750 | } |
751 | else | |
752 | { | |
753 | if (v >= version_map->size()) | |
754 | { | |
755 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
756 | i, v); | |
757 | continue; | |
758 | } | |
dbe717ef | 759 | |
aeddab66 ILT |
760 | const char* version = (*version_map)[v]; |
761 | if (version == NULL) | |
762 | { | |
763 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
764 | i, v); | |
765 | continue; | |
766 | } | |
dbe717ef | 767 | |
aeddab66 ILT |
768 | Stringpool::Key version_key; |
769 | version = this->namepool_.add(version, true, &version_key); | |
770 | ||
771 | // If this is an absolute symbol, and the version name | |
772 | // and symbol name are the same, then this is the | |
773 | // version definition symbol. These symbols exist to | |
774 | // support using -u to pull in particular versions. We | |
775 | // do not want to record a version for them. | |
776 | if (sym.get_st_shndx() == elfcpp::SHN_ABS | |
777 | && name_key == version_key) | |
778 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 779 | false, sym, sym); |
aeddab66 ILT |
780 | else |
781 | { | |
782 | const bool def = (!hidden | |
783 | && (sym.get_st_shndx() | |
784 | != elfcpp::SHN_UNDEF)); | |
785 | res = this->add_from_object(dynobj, name, name_key, version, | |
70e654ba | 786 | version_key, def, sym, sym); |
aeddab66 ILT |
787 | } |
788 | } | |
dbe717ef ILT |
789 | } |
790 | ||
aeddab66 ILT |
791 | if (sym.get_st_shndx() != elfcpp::SHN_UNDEF |
792 | && sym.get_st_type() == elfcpp::STT_OBJECT) | |
793 | object_symbols.push_back(res); | |
794 | } | |
795 | ||
796 | this->record_weak_aliases(&object_symbols); | |
797 | } | |
798 | ||
799 | // This is used to sort weak aliases. We sort them first by section | |
800 | // index, then by offset, then by weak ahead of strong. | |
801 | ||
802 | template<int size> | |
803 | class Weak_alias_sorter | |
804 | { | |
805 | public: | |
806 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
807 | }; | |
808 | ||
809 | template<int size> | |
810 | bool | |
811 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
812 | const Sized_symbol<size>* s2) const | |
813 | { | |
814 | if (s1->shndx() != s2->shndx()) | |
815 | return s1->shndx() < s2->shndx(); | |
816 | if (s1->value() != s2->value()) | |
817 | return s1->value() < s2->value(); | |
818 | if (s1->binding() != s2->binding()) | |
819 | { | |
820 | if (s1->binding() == elfcpp::STB_WEAK) | |
821 | return true; | |
822 | if (s2->binding() == elfcpp::STB_WEAK) | |
823 | return false; | |
824 | } | |
825 | return std::string(s1->name()) < std::string(s2->name()); | |
826 | } | |
dbe717ef | 827 | |
aeddab66 ILT |
828 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
829 | // for any weak aliases, and record them so that if we add the weak | |
830 | // alias to the dynamic symbol table, we also add the corresponding | |
831 | // strong symbol. | |
dbe717ef | 832 | |
aeddab66 ILT |
833 | template<int size> |
834 | void | |
835 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
836 | { | |
837 | // Sort the vector by section index, then by offset, then by weak | |
838 | // ahead of strong. | |
839 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
840 | ||
841 | // Walk through the vector. For each weak definition, record | |
842 | // aliases. | |
843 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
844 | symbols->begin(); | |
845 | p != symbols->end(); | |
846 | ++p) | |
847 | { | |
848 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
849 | continue; | |
850 | ||
851 | // Build a circular list of weak aliases. Each symbol points to | |
852 | // the next one in the circular list. | |
853 | ||
854 | Sized_symbol<size>* from_sym = *p; | |
855 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
856 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 857 | { |
aeddab66 ILT |
858 | if ((*q)->shndx() != from_sym->shndx() |
859 | || (*q)->value() != from_sym->value()) | |
860 | break; | |
861 | ||
862 | this->weak_aliases_[from_sym] = *q; | |
863 | from_sym->set_has_alias(); | |
864 | from_sym = *q; | |
dbe717ef ILT |
865 | } |
866 | ||
aeddab66 ILT |
867 | if (from_sym != *p) |
868 | { | |
869 | this->weak_aliases_[from_sym] = *p; | |
870 | from_sym->set_has_alias(); | |
871 | } | |
dbe717ef | 872 | |
aeddab66 | 873 | p = q - 1; |
dbe717ef ILT |
874 | } |
875 | } | |
876 | ||
ead1e424 ILT |
877 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
878 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 879 | // If this does not return NULL, it sets *POLDSYM to the existing |
306d9ef0 | 880 | // symbol if there is one. This canonicalizes *PNAME and *PVERSION. |
ead1e424 ILT |
881 | |
882 | template<int size, bool big_endian> | |
883 | Sized_symbol<size>* | |
306d9ef0 ILT |
884 | Symbol_table::define_special_symbol(const Target* target, const char** pname, |
885 | const char** pversion, bool only_if_ref, | |
86f2e683 | 886 | Sized_symbol<size>** poldsym |
593f47df | 887 | ACCEPT_SIZE_ENDIAN) |
ead1e424 | 888 | { |
ead1e424 ILT |
889 | Symbol* oldsym; |
890 | Sized_symbol<size>* sym; | |
86f2e683 ILT |
891 | bool add_to_table = false; |
892 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
ead1e424 ILT |
893 | |
894 | if (only_if_ref) | |
895 | { | |
306d9ef0 | 896 | oldsym = this->lookup(*pname, *pversion); |
f6ce93d6 | 897 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 898 | return NULL; |
306d9ef0 ILT |
899 | |
900 | *pname = oldsym->name(); | |
901 | *pversion = oldsym->version(); | |
ead1e424 ILT |
902 | } |
903 | else | |
904 | { | |
14b31740 | 905 | // Canonicalize NAME and VERSION. |
f0641a0b | 906 | Stringpool::Key name_key; |
cfd73a4e | 907 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 908 | |
14b31740 | 909 | Stringpool::Key version_key = 0; |
306d9ef0 | 910 | if (*pversion != NULL) |
cfd73a4e | 911 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 912 | |
ead1e424 | 913 | Symbol* const snull = NULL; |
ead1e424 | 914 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
915 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
916 | version_key), | |
ead1e424 ILT |
917 | snull)); |
918 | ||
919 | if (!ins.second) | |
920 | { | |
14b31740 | 921 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 922 | oldsym = ins.first->second; |
a3ad94ed | 923 | gold_assert(oldsym != NULL); |
ead1e424 ILT |
924 | } |
925 | else | |
926 | { | |
927 | // We haven't seen this symbol before. | |
a3ad94ed | 928 | gold_assert(ins.first->second == NULL); |
86f2e683 ILT |
929 | add_to_table = true; |
930 | add_loc = ins.first; | |
ead1e424 ILT |
931 | oldsym = NULL; |
932 | } | |
933 | } | |
934 | ||
86f2e683 ILT |
935 | if (!target->has_make_symbol()) |
936 | sym = new Sized_symbol<size>(); | |
937 | else | |
ead1e424 | 938 | { |
86f2e683 ILT |
939 | gold_assert(target->get_size() == size); |
940 | gold_assert(target->is_big_endian() ? big_endian : !big_endian); | |
941 | typedef Sized_target<size, big_endian> My_target; | |
942 | const My_target* sized_target = | |
943 | static_cast<const My_target*>(target); | |
944 | sym = sized_target->make_symbol(); | |
945 | if (sym == NULL) | |
946 | return NULL; | |
947 | } | |
ead1e424 | 948 | |
86f2e683 ILT |
949 | if (add_to_table) |
950 | add_loc->second = sym; | |
951 | else | |
952 | gold_assert(oldsym != NULL); | |
ead1e424 | 953 | |
86f2e683 ILT |
954 | *poldsym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
955 | SELECT_SIZE(size)); | |
ead1e424 ILT |
956 | |
957 | return sym; | |
958 | } | |
959 | ||
960 | // Define a symbol based on an Output_data. | |
961 | ||
14b31740 ILT |
962 | Symbol* |
963 | Symbol_table::define_in_output_data(const Target* target, const char* name, | |
964 | const char* version, Output_data* od, | |
ead1e424 ILT |
965 | uint64_t value, uint64_t symsize, |
966 | elfcpp::STT type, elfcpp::STB binding, | |
967 | elfcpp::STV visibility, | |
968 | unsigned char nonvis, | |
969 | bool offset_is_from_end, | |
970 | bool only_if_ref) | |
971 | { | |
9025d29d | 972 | if (parameters->get_size() == 32) |
86f2e683 ILT |
973 | { |
974 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
975 | return this->do_define_in_output_data<32>(target, name, version, od, | |
976 | value, symsize, type, binding, | |
977 | visibility, nonvis, | |
978 | offset_is_from_end, | |
979 | only_if_ref); | |
980 | #else | |
981 | gold_unreachable(); | |
982 | #endif | |
983 | } | |
9025d29d | 984 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
985 | { |
986 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
987 | return this->do_define_in_output_data<64>(target, name, version, od, | |
988 | value, symsize, type, binding, | |
989 | visibility, nonvis, | |
990 | offset_is_from_end, | |
991 | only_if_ref); | |
992 | #else | |
993 | gold_unreachable(); | |
994 | #endif | |
995 | } | |
ead1e424 | 996 | else |
a3ad94ed | 997 | gold_unreachable(); |
ead1e424 ILT |
998 | } |
999 | ||
1000 | // Define a symbol in an Output_data, sized version. | |
1001 | ||
1002 | template<int size> | |
14b31740 | 1003 | Sized_symbol<size>* |
ead1e424 | 1004 | Symbol_table::do_define_in_output_data( |
14b31740 | 1005 | const Target* target, |
ead1e424 | 1006 | const char* name, |
14b31740 | 1007 | const char* version, |
ead1e424 ILT |
1008 | Output_data* od, |
1009 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1010 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1011 | elfcpp::STT type, | |
1012 | elfcpp::STB binding, | |
1013 | elfcpp::STV visibility, | |
1014 | unsigned char nonvis, | |
1015 | bool offset_is_from_end, | |
1016 | bool only_if_ref) | |
1017 | { | |
1018 | Sized_symbol<size>* sym; | |
86f2e683 | 1019 | Sized_symbol<size>* oldsym; |
ead1e424 | 1020 | |
9025d29d | 1021 | if (parameters->is_big_endian()) |
193a53d9 ILT |
1022 | { |
1023 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1024 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
306d9ef0 | 1025 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1026 | SELECT_SIZE_ENDIAN(size, true)); |
1027 | #else | |
1028 | gold_unreachable(); | |
1029 | #endif | |
1030 | } | |
ead1e424 | 1031 | else |
193a53d9 ILT |
1032 | { |
1033 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1034 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
306d9ef0 | 1035 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1036 | SELECT_SIZE_ENDIAN(size, false)); |
1037 | #else | |
1038 | gold_unreachable(); | |
1039 | #endif | |
1040 | } | |
ead1e424 ILT |
1041 | |
1042 | if (sym == NULL) | |
14b31740 | 1043 | return NULL; |
ead1e424 | 1044 | |
d4f5281b | 1045 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1046 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, |
1047 | offset_is_from_end); | |
14b31740 | 1048 | |
86f2e683 ILT |
1049 | if (oldsym != NULL |
1050 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1051 | this->override_with_special(oldsym, sym); |
86f2e683 | 1052 | |
14b31740 | 1053 | return sym; |
ead1e424 ILT |
1054 | } |
1055 | ||
1056 | // Define a symbol based on an Output_segment. | |
1057 | ||
14b31740 ILT |
1058 | Symbol* |
1059 | Symbol_table::define_in_output_segment(const Target* target, const char* name, | |
1060 | const char* version, Output_segment* os, | |
ead1e424 ILT |
1061 | uint64_t value, uint64_t symsize, |
1062 | elfcpp::STT type, elfcpp::STB binding, | |
1063 | elfcpp::STV visibility, | |
1064 | unsigned char nonvis, | |
1065 | Symbol::Segment_offset_base offset_base, | |
1066 | bool only_if_ref) | |
1067 | { | |
9025d29d | 1068 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1069 | { |
1070 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1071 | return this->do_define_in_output_segment<32>(target, name, version, os, | |
1072 | value, symsize, type, | |
1073 | binding, visibility, nonvis, | |
1074 | offset_base, only_if_ref); | |
1075 | #else | |
1076 | gold_unreachable(); | |
1077 | #endif | |
1078 | } | |
9025d29d | 1079 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1080 | { |
1081 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1082 | return this->do_define_in_output_segment<64>(target, name, version, os, | |
1083 | value, symsize, type, | |
1084 | binding, visibility, nonvis, | |
1085 | offset_base, only_if_ref); | |
1086 | #else | |
1087 | gold_unreachable(); | |
1088 | #endif | |
1089 | } | |
ead1e424 | 1090 | else |
a3ad94ed | 1091 | gold_unreachable(); |
ead1e424 ILT |
1092 | } |
1093 | ||
1094 | // Define a symbol in an Output_segment, sized version. | |
1095 | ||
1096 | template<int size> | |
14b31740 | 1097 | Sized_symbol<size>* |
ead1e424 | 1098 | Symbol_table::do_define_in_output_segment( |
14b31740 | 1099 | const Target* target, |
ead1e424 | 1100 | const char* name, |
14b31740 | 1101 | const char* version, |
ead1e424 ILT |
1102 | Output_segment* os, |
1103 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1104 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1105 | elfcpp::STT type, | |
1106 | elfcpp::STB binding, | |
1107 | elfcpp::STV visibility, | |
1108 | unsigned char nonvis, | |
1109 | Symbol::Segment_offset_base offset_base, | |
1110 | bool only_if_ref) | |
1111 | { | |
1112 | Sized_symbol<size>* sym; | |
86f2e683 | 1113 | Sized_symbol<size>* oldsym; |
ead1e424 | 1114 | |
9025d29d ILT |
1115 | if (parameters->is_big_endian()) |
1116 | { | |
1117 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1118 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1119 | target, &name, &version, only_if_ref, &oldsym | |
1120 | SELECT_SIZE_ENDIAN(size, true)); | |
1121 | #else | |
1122 | gold_unreachable(); | |
1123 | #endif | |
1124 | } | |
ead1e424 | 1125 | else |
9025d29d ILT |
1126 | { |
1127 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1128 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1129 | target, &name, &version, only_if_ref, &oldsym | |
1130 | SELECT_SIZE_ENDIAN(size, false)); | |
1131 | #else | |
1132 | gold_unreachable(); | |
1133 | #endif | |
1134 | } | |
ead1e424 ILT |
1135 | |
1136 | if (sym == NULL) | |
14b31740 | 1137 | return NULL; |
ead1e424 | 1138 | |
d4f5281b | 1139 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1140 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, |
1141 | offset_base); | |
14b31740 | 1142 | |
86f2e683 ILT |
1143 | if (oldsym != NULL |
1144 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1145 | this->override_with_special(oldsym, sym); |
86f2e683 | 1146 | |
14b31740 | 1147 | return sym; |
ead1e424 ILT |
1148 | } |
1149 | ||
1150 | // Define a special symbol with a constant value. It is a multiple | |
1151 | // definition error if this symbol is already defined. | |
1152 | ||
14b31740 ILT |
1153 | Symbol* |
1154 | Symbol_table::define_as_constant(const Target* target, const char* name, | |
1155 | const char* version, uint64_t value, | |
1156 | uint64_t symsize, elfcpp::STT type, | |
1157 | elfcpp::STB binding, elfcpp::STV visibility, | |
1158 | unsigned char nonvis, bool only_if_ref) | |
ead1e424 | 1159 | { |
9025d29d | 1160 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1161 | { |
1162 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1163 | return this->do_define_as_constant<32>(target, name, version, value, | |
1164 | symsize, type, binding, | |
1165 | visibility, nonvis, only_if_ref); | |
1166 | #else | |
1167 | gold_unreachable(); | |
1168 | #endif | |
1169 | } | |
9025d29d | 1170 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1171 | { |
1172 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1173 | return this->do_define_as_constant<64>(target, name, version, value, | |
1174 | symsize, type, binding, | |
1175 | visibility, nonvis, only_if_ref); | |
1176 | #else | |
1177 | gold_unreachable(); | |
1178 | #endif | |
1179 | } | |
ead1e424 | 1180 | else |
a3ad94ed | 1181 | gold_unreachable(); |
ead1e424 ILT |
1182 | } |
1183 | ||
1184 | // Define a symbol as a constant, sized version. | |
1185 | ||
1186 | template<int size> | |
14b31740 | 1187 | Sized_symbol<size>* |
ead1e424 | 1188 | Symbol_table::do_define_as_constant( |
14b31740 | 1189 | const Target* target, |
ead1e424 | 1190 | const char* name, |
14b31740 | 1191 | const char* version, |
ead1e424 ILT |
1192 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1193 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1194 | elfcpp::STT type, | |
1195 | elfcpp::STB binding, | |
1196 | elfcpp::STV visibility, | |
1197 | unsigned char nonvis, | |
1198 | bool only_if_ref) | |
1199 | { | |
1200 | Sized_symbol<size>* sym; | |
86f2e683 | 1201 | Sized_symbol<size>* oldsym; |
ead1e424 | 1202 | |
9025d29d ILT |
1203 | if (parameters->is_big_endian()) |
1204 | { | |
1205 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1206 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1207 | target, &name, &version, only_if_ref, &oldsym | |
1208 | SELECT_SIZE_ENDIAN(size, true)); | |
1209 | #else | |
1210 | gold_unreachable(); | |
1211 | #endif | |
1212 | } | |
ead1e424 | 1213 | else |
9025d29d ILT |
1214 | { |
1215 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1216 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1217 | target, &name, &version, only_if_ref, &oldsym | |
1218 | SELECT_SIZE_ENDIAN(size, false)); | |
1219 | #else | |
1220 | gold_unreachable(); | |
1221 | #endif | |
1222 | } | |
ead1e424 ILT |
1223 | |
1224 | if (sym == NULL) | |
14b31740 | 1225 | return NULL; |
ead1e424 | 1226 | |
d4f5281b | 1227 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 | 1228 | sym->init(name, value, symsize, type, binding, visibility, nonvis); |
14b31740 | 1229 | |
86f2e683 ILT |
1230 | if (oldsym != NULL |
1231 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1232 | this->override_with_special(oldsym, sym); |
86f2e683 | 1233 | |
14b31740 | 1234 | return sym; |
ead1e424 ILT |
1235 | } |
1236 | ||
1237 | // Define a set of symbols in output sections. | |
1238 | ||
1239 | void | |
14b31740 ILT |
1240 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1241 | int count, const Define_symbol_in_section* p) | |
ead1e424 ILT |
1242 | { |
1243 | for (int i = 0; i < count; ++i, ++p) | |
1244 | { | |
1245 | Output_section* os = layout->find_output_section(p->output_section); | |
1246 | if (os != NULL) | |
14b31740 ILT |
1247 | this->define_in_output_data(target, p->name, NULL, os, p->value, |
1248 | p->size, p->type, p->binding, | |
1249 | p->visibility, p->nonvis, | |
1250 | p->offset_is_from_end, p->only_if_ref); | |
ead1e424 | 1251 | else |
14b31740 | 1252 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1253 | p->binding, p->visibility, p->nonvis, |
1254 | p->only_if_ref); | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | // Define a set of symbols in output segments. | |
1259 | ||
1260 | void | |
14b31740 ILT |
1261 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1262 | int count, const Define_symbol_in_segment* p) | |
ead1e424 ILT |
1263 | { |
1264 | for (int i = 0; i < count; ++i, ++p) | |
1265 | { | |
1266 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
1267 | p->segment_flags_set, | |
1268 | p->segment_flags_clear); | |
1269 | if (os != NULL) | |
14b31740 ILT |
1270 | this->define_in_output_segment(target, p->name, NULL, os, p->value, |
1271 | p->size, p->type, p->binding, | |
1272 | p->visibility, p->nonvis, | |
1273 | p->offset_base, p->only_if_ref); | |
ead1e424 | 1274 | else |
14b31740 | 1275 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1276 | p->binding, p->visibility, p->nonvis, |
1277 | p->only_if_ref); | |
1278 | } | |
1279 | } | |
1280 | ||
46fe1623 ILT |
1281 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
1282 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
1283 | // the offset within POSD. | |
1284 | ||
1285 | template<int size> | |
1286 | void | |
1287 | Symbol_table::define_with_copy_reloc(const Target* target, | |
1288 | Sized_symbol<size>* csym, | |
1289 | Output_data* posd, uint64_t value) | |
1290 | { | |
1291 | gold_assert(csym->is_from_dynobj()); | |
1292 | gold_assert(!csym->is_copied_from_dynobj()); | |
1293 | Object* object = csym->object(); | |
1294 | gold_assert(object->is_dynamic()); | |
1295 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
1296 | ||
1297 | // Our copied variable has to override any variable in a shared | |
1298 | // library. | |
1299 | elfcpp::STB binding = csym->binding(); | |
1300 | if (binding == elfcpp::STB_WEAK) | |
1301 | binding = elfcpp::STB_GLOBAL; | |
1302 | ||
1303 | this->define_in_output_data(target, csym->name(), csym->version(), | |
1304 | posd, value, csym->symsize(), | |
1305 | csym->type(), binding, | |
1306 | csym->visibility(), csym->nonvis(), | |
1307 | false, false); | |
1308 | ||
1309 | csym->set_is_copied_from_dynobj(); | |
1310 | csym->set_needs_dynsym_entry(); | |
1311 | ||
1312 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
1313 | ||
1314 | // We have now defined all aliases, but we have not entered them all | |
1315 | // in the copied_symbol_dynobjs_ map. | |
1316 | if (csym->has_alias()) | |
1317 | { | |
1318 | Symbol* sym = csym; | |
1319 | while (true) | |
1320 | { | |
1321 | sym = this->weak_aliases_[sym]; | |
1322 | if (sym == csym) | |
1323 | break; | |
1324 | gold_assert(sym->output_data() == posd); | |
1325 | ||
1326 | sym->set_is_copied_from_dynobj(); | |
1327 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
1328 | } | |
1329 | } | |
1330 | } | |
1331 | ||
1332 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
1333 | // the original definition was found. | |
1334 | ||
1335 | Dynobj* | |
1336 | Symbol_table::get_copy_source(const Symbol* sym) const | |
1337 | { | |
1338 | gold_assert(sym->is_copied_from_dynobj()); | |
1339 | Copied_symbol_dynobjs::const_iterator p = | |
1340 | this->copied_symbol_dynobjs_.find(sym); | |
1341 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
1342 | return p->second; | |
1343 | } | |
1344 | ||
a3ad94ed ILT |
1345 | // Set the dynamic symbol indexes. INDEX is the index of the first |
1346 | // global dynamic symbol. Pointers to the symbols are stored into the | |
1347 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
1348 | // updated dynamic symbol index. | |
1349 | ||
1350 | unsigned int | |
35cdfc9a | 1351 | Symbol_table::set_dynsym_indexes(const Target* target, |
14b31740 | 1352 | unsigned int index, |
a3ad94ed | 1353 | std::vector<Symbol*>* syms, |
14b31740 ILT |
1354 | Stringpool* dynpool, |
1355 | Versions* versions) | |
a3ad94ed ILT |
1356 | { |
1357 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
1358 | p != this->table_.end(); | |
1359 | ++p) | |
1360 | { | |
1361 | Symbol* sym = p->second; | |
16649710 ILT |
1362 | |
1363 | // Note that SYM may already have a dynamic symbol index, since | |
1364 | // some symbols appear more than once in the symbol table, with | |
1365 | // and without a version. | |
1366 | ||
436ca963 | 1367 | if (!sym->should_add_dynsym_entry()) |
16649710 ILT |
1368 | sym->set_dynsym_index(-1U); |
1369 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
1370 | { |
1371 | sym->set_dynsym_index(index); | |
1372 | ++index; | |
1373 | syms->push_back(sym); | |
cfd73a4e | 1374 | dynpool->add(sym->name(), false, NULL); |
14b31740 ILT |
1375 | |
1376 | // Record any version information. | |
1377 | if (sym->version() != NULL) | |
35cdfc9a | 1378 | versions->record_version(this, dynpool, sym); |
a3ad94ed ILT |
1379 | } |
1380 | } | |
1381 | ||
14b31740 ILT |
1382 | // Finish up the versions. In some cases this may add new dynamic |
1383 | // symbols. | |
1384 | index = versions->finalize(target, this, index, syms); | |
1385 | ||
a3ad94ed ILT |
1386 | return index; |
1387 | } | |
1388 | ||
c06b7b0b ILT |
1389 | // Set the final values for all the symbols. The index of the first |
1390 | // global symbol in the output file is INDEX. Record the file offset | |
75f65a3e | 1391 | // OFF. Add their names to POOL. Return the new file offset. |
54dc6425 | 1392 | |
75f65a3e | 1393 | off_t |
16649710 ILT |
1394 | Symbol_table::finalize(unsigned int index, off_t off, off_t dynoff, |
1395 | size_t dyn_global_index, size_t dyncount, | |
1396 | Stringpool* pool) | |
54dc6425 | 1397 | { |
f6ce93d6 ILT |
1398 | off_t ret; |
1399 | ||
a3ad94ed | 1400 | gold_assert(index != 0); |
c06b7b0b ILT |
1401 | this->first_global_index_ = index; |
1402 | ||
16649710 ILT |
1403 | this->dynamic_offset_ = dynoff; |
1404 | this->first_dynamic_global_index_ = dyn_global_index; | |
1405 | this->dynamic_count_ = dyncount; | |
1406 | ||
9025d29d ILT |
1407 | if (parameters->get_size() == 32) |
1408 | { | |
1409 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
1410 | ret = this->sized_finalize<32>(index, off, pool); | |
1411 | #else | |
1412 | gold_unreachable(); | |
1413 | #endif | |
1414 | } | |
1415 | else if (parameters->get_size() == 64) | |
1416 | { | |
1417 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
1418 | ret = this->sized_finalize<64>(index, off, pool); | |
1419 | #else | |
1420 | gold_unreachable(); | |
1421 | #endif | |
1422 | } | |
61ba1cf9 | 1423 | else |
a3ad94ed | 1424 | gold_unreachable(); |
f6ce93d6 ILT |
1425 | |
1426 | // Now that we have the final symbol table, we can reliably note | |
1427 | // which symbols should get warnings. | |
1428 | this->warnings_.note_warnings(this); | |
1429 | ||
1430 | return ret; | |
75f65a3e ILT |
1431 | } |
1432 | ||
ead1e424 ILT |
1433 | // Set the final value for all the symbols. This is called after |
1434 | // Layout::finalize, so all the output sections have their final | |
1435 | // address. | |
75f65a3e ILT |
1436 | |
1437 | template<int size> | |
1438 | off_t | |
c06b7b0b | 1439 | Symbol_table::sized_finalize(unsigned index, off_t off, Stringpool* pool) |
75f65a3e | 1440 | { |
ead1e424 | 1441 | off = align_address(off, size >> 3); |
75f65a3e ILT |
1442 | this->offset_ = off; |
1443 | ||
c06b7b0b ILT |
1444 | size_t orig_index = index; |
1445 | ||
75f65a3e | 1446 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1447 | for (Symbol_table_type::iterator p = this->table_.begin(); |
1448 | p != this->table_.end(); | |
1449 | ++p) | |
54dc6425 | 1450 | { |
75f65a3e | 1451 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 1452 | |
75f65a3e | 1453 | // FIXME: Here we need to decide which symbols should go into |
a3ad94ed ILT |
1454 | // the output file, based on --strip. |
1455 | ||
1456 | // The default version of a symbol may appear twice in the | |
1457 | // symbol table. We only need to finalize it once. | |
1458 | if (sym->has_symtab_index()) | |
1459 | continue; | |
75f65a3e | 1460 | |
008db82e ILT |
1461 | if (!sym->in_reg()) |
1462 | { | |
1463 | gold_assert(!sym->has_symtab_index()); | |
1464 | sym->set_symtab_index(-1U); | |
1465 | gold_assert(sym->dynsym_index() == -1U); | |
1466 | continue; | |
1467 | } | |
1468 | ||
ead1e424 | 1469 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 1470 | |
ead1e424 | 1471 | switch (sym->source()) |
75f65a3e | 1472 | { |
ead1e424 ILT |
1473 | case Symbol::FROM_OBJECT: |
1474 | { | |
16649710 | 1475 | unsigned int shndx = sym->shndx(); |
ead1e424 ILT |
1476 | |
1477 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1478 | if (shndx >= elfcpp::SHN_LORESERVE |
1479 | && shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1480 | { |
75f2446e | 1481 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1482 | sym->demangled_name().c_str(), shndx); |
75f2446e | 1483 | shndx = elfcpp::SHN_UNDEF; |
ead1e424 ILT |
1484 | } |
1485 | ||
f6ce93d6 ILT |
1486 | Object* symobj = sym->object(); |
1487 | if (symobj->is_dynamic()) | |
1488 | { | |
1489 | value = 0; | |
16649710 | 1490 | shndx = elfcpp::SHN_UNDEF; |
f6ce93d6 | 1491 | } |
16649710 | 1492 | else if (shndx == elfcpp::SHN_UNDEF) |
ead1e424 | 1493 | value = 0; |
16649710 | 1494 | else if (shndx == elfcpp::SHN_ABS) |
ead1e424 ILT |
1495 | value = sym->value(); |
1496 | else | |
1497 | { | |
f6ce93d6 | 1498 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 1499 | off_t secoff; |
16649710 | 1500 | Output_section* os = relobj->output_section(shndx, &secoff); |
ead1e424 ILT |
1501 | |
1502 | if (os == NULL) | |
1503 | { | |
c06b7b0b | 1504 | sym->set_symtab_index(-1U); |
16649710 | 1505 | gold_assert(sym->dynsym_index() == -1U); |
ead1e424 ILT |
1506 | continue; |
1507 | } | |
1508 | ||
7bf1f802 ILT |
1509 | if (sym->type() == elfcpp::STT_TLS) |
1510 | value = sym->value() + os->tls_offset() + secoff; | |
1511 | else | |
1512 | value = sym->value() + os->address() + secoff; | |
ead1e424 ILT |
1513 | } |
1514 | } | |
1515 | break; | |
1516 | ||
1517 | case Symbol::IN_OUTPUT_DATA: | |
1518 | { | |
1519 | Output_data* od = sym->output_data(); | |
1520 | value = sym->value() + od->address(); | |
1521 | if (sym->offset_is_from_end()) | |
1522 | value += od->data_size(); | |
1523 | } | |
1524 | break; | |
1525 | ||
1526 | case Symbol::IN_OUTPUT_SEGMENT: | |
1527 | { | |
1528 | Output_segment* os = sym->output_segment(); | |
1529 | value = sym->value() + os->vaddr(); | |
1530 | switch (sym->offset_base()) | |
1531 | { | |
1532 | case Symbol::SEGMENT_START: | |
1533 | break; | |
1534 | case Symbol::SEGMENT_END: | |
1535 | value += os->memsz(); | |
1536 | break; | |
1537 | case Symbol::SEGMENT_BSS: | |
1538 | value += os->filesz(); | |
1539 | break; | |
1540 | default: | |
a3ad94ed | 1541 | gold_unreachable(); |
ead1e424 ILT |
1542 | } |
1543 | } | |
1544 | break; | |
1545 | ||
1546 | case Symbol::CONSTANT: | |
1547 | value = sym->value(); | |
1548 | break; | |
1549 | ||
1550 | default: | |
a3ad94ed | 1551 | gold_unreachable(); |
54dc6425 | 1552 | } |
ead1e424 ILT |
1553 | |
1554 | sym->set_value(value); | |
9e2dcb77 ILT |
1555 | |
1556 | if (parameters->strip_all()) | |
1557 | sym->set_symtab_index(-1U); | |
1558 | else | |
1559 | { | |
1560 | sym->set_symtab_index(index); | |
cfd73a4e | 1561 | pool->add(sym->name(), false, NULL); |
9e2dcb77 ILT |
1562 | ++index; |
1563 | off += sym_size; | |
1564 | } | |
54dc6425 | 1565 | } |
75f65a3e | 1566 | |
c06b7b0b | 1567 | this->output_count_ = index - orig_index; |
61ba1cf9 | 1568 | |
75f65a3e | 1569 | return off; |
54dc6425 ILT |
1570 | } |
1571 | ||
61ba1cf9 ILT |
1572 | // Write out the global symbols. |
1573 | ||
1574 | void | |
9a2d6984 ILT |
1575 | Symbol_table::write_globals(const Input_objects* input_objects, |
1576 | const Stringpool* sympool, | |
16649710 | 1577 | const Stringpool* dynpool, Output_file* of) const |
61ba1cf9 | 1578 | { |
9025d29d | 1579 | if (parameters->get_size() == 32) |
61ba1cf9 | 1580 | { |
9025d29d ILT |
1581 | if (parameters->is_big_endian()) |
1582 | { | |
1583 | #ifdef HAVE_TARGET_32_BIG | |
9a2d6984 ILT |
1584 | this->sized_write_globals<32, true>(input_objects, sympool, |
1585 | dynpool, of); | |
9025d29d ILT |
1586 | #else |
1587 | gold_unreachable(); | |
1588 | #endif | |
1589 | } | |
61ba1cf9 | 1590 | else |
9025d29d ILT |
1591 | { |
1592 | #ifdef HAVE_TARGET_32_LITTLE | |
9a2d6984 ILT |
1593 | this->sized_write_globals<32, false>(input_objects, sympool, |
1594 | dynpool, of); | |
9025d29d ILT |
1595 | #else |
1596 | gold_unreachable(); | |
1597 | #endif | |
1598 | } | |
61ba1cf9 | 1599 | } |
9025d29d | 1600 | else if (parameters->get_size() == 64) |
61ba1cf9 | 1601 | { |
9025d29d ILT |
1602 | if (parameters->is_big_endian()) |
1603 | { | |
1604 | #ifdef HAVE_TARGET_64_BIG | |
9a2d6984 ILT |
1605 | this->sized_write_globals<64, true>(input_objects, sympool, |
1606 | dynpool, of); | |
9025d29d ILT |
1607 | #else |
1608 | gold_unreachable(); | |
1609 | #endif | |
1610 | } | |
61ba1cf9 | 1611 | else |
9025d29d ILT |
1612 | { |
1613 | #ifdef HAVE_TARGET_64_LITTLE | |
9a2d6984 ILT |
1614 | this->sized_write_globals<64, false>(input_objects, sympool, |
1615 | dynpool, of); | |
9025d29d ILT |
1616 | #else |
1617 | gold_unreachable(); | |
1618 | #endif | |
1619 | } | |
61ba1cf9 ILT |
1620 | } |
1621 | else | |
a3ad94ed | 1622 | gold_unreachable(); |
61ba1cf9 ILT |
1623 | } |
1624 | ||
1625 | // Write out the global symbols. | |
1626 | ||
1627 | template<int size, bool big_endian> | |
1628 | void | |
9a2d6984 | 1629 | Symbol_table::sized_write_globals(const Input_objects* input_objects, |
61ba1cf9 | 1630 | const Stringpool* sympool, |
16649710 | 1631 | const Stringpool* dynpool, |
61ba1cf9 ILT |
1632 | Output_file* of) const |
1633 | { | |
9a2d6984 ILT |
1634 | const Target* const target = input_objects->target(); |
1635 | ||
61ba1cf9 | 1636 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1637 | unsigned int index = this->first_global_index_; |
1638 | const off_t oview_size = this->output_count_ * sym_size; | |
16649710 ILT |
1639 | unsigned char* const psyms = of->get_output_view(this->offset_, oview_size); |
1640 | ||
1641 | unsigned int dynamic_count = this->dynamic_count_; | |
1642 | off_t dynamic_size = dynamic_count * sym_size; | |
1643 | unsigned int first_dynamic_global_index = this->first_dynamic_global_index_; | |
1644 | unsigned char* dynamic_view; | |
1645 | if (this->dynamic_offset_ == 0) | |
1646 | dynamic_view = NULL; | |
1647 | else | |
1648 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 1649 | |
61ba1cf9 ILT |
1650 | unsigned char* ps = psyms; |
1651 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1652 | p != this->table_.end(); | |
1653 | ++p) | |
1654 | { | |
1655 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1656 | ||
9a2d6984 ILT |
1657 | // Possibly warn about unresolved symbols in shared libraries. |
1658 | this->warn_about_undefined_dynobj_symbol(input_objects, sym); | |
e2827e5f | 1659 | |
a3ad94ed | 1660 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
1661 | unsigned int dynsym_index; |
1662 | if (dynamic_view == NULL) | |
1663 | dynsym_index = -1U; | |
1664 | else | |
1665 | dynsym_index = sym->dynsym_index(); | |
1666 | ||
1667 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
1668 | { |
1669 | // This symbol is not included in the output file. | |
1670 | continue; | |
1671 | } | |
16649710 ILT |
1672 | |
1673 | if (sym_index == index) | |
1674 | ++index; | |
1675 | else if (sym_index != -1U) | |
a3ad94ed ILT |
1676 | { |
1677 | // We have already seen this symbol, because it has a | |
1678 | // default version. | |
1679 | gold_assert(sym_index < index); | |
16649710 ILT |
1680 | if (dynsym_index == -1U) |
1681 | continue; | |
1682 | sym_index = -1U; | |
a3ad94ed | 1683 | } |
c06b7b0b | 1684 | |
ead1e424 | 1685 | unsigned int shndx; |
ab5c9e90 | 1686 | typename elfcpp::Elf_types<32>::Elf_Addr value = sym->value(); |
ead1e424 ILT |
1687 | switch (sym->source()) |
1688 | { | |
1689 | case Symbol::FROM_OBJECT: | |
1690 | { | |
16649710 | 1691 | unsigned int in_shndx = sym->shndx(); |
ead1e424 ILT |
1692 | |
1693 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1694 | if (in_shndx >= elfcpp::SHN_LORESERVE |
1695 | && in_shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1696 | { |
75f2446e | 1697 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1698 | sym->demangled_name().c_str(), in_shndx); |
75f2446e | 1699 | shndx = in_shndx; |
f6ce93d6 | 1700 | } |
ead1e424 ILT |
1701 | else |
1702 | { | |
75f2446e ILT |
1703 | Object* symobj = sym->object(); |
1704 | if (symobj->is_dynamic()) | |
1705 | { | |
1706 | if (sym->needs_dynsym_value()) | |
1707 | value = target->dynsym_value(sym); | |
1708 | shndx = elfcpp::SHN_UNDEF; | |
1709 | } | |
1710 | else if (in_shndx == elfcpp::SHN_UNDEF | |
1711 | || in_shndx == elfcpp::SHN_ABS) | |
1712 | shndx = in_shndx; | |
1713 | else | |
1714 | { | |
1715 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
1716 | off_t secoff; | |
1717 | Output_section* os = relobj->output_section(in_shndx, | |
1718 | &secoff); | |
1719 | gold_assert(os != NULL); | |
1720 | shndx = os->out_shndx(); | |
1721 | } | |
ead1e424 ILT |
1722 | } |
1723 | } | |
1724 | break; | |
1725 | ||
1726 | case Symbol::IN_OUTPUT_DATA: | |
1727 | shndx = sym->output_data()->out_shndx(); | |
1728 | break; | |
1729 | ||
1730 | case Symbol::IN_OUTPUT_SEGMENT: | |
1731 | shndx = elfcpp::SHN_ABS; | |
1732 | break; | |
1733 | ||
1734 | case Symbol::CONSTANT: | |
1735 | shndx = elfcpp::SHN_ABS; | |
1736 | break; | |
1737 | ||
1738 | default: | |
a3ad94ed | 1739 | gold_unreachable(); |
ead1e424 | 1740 | } |
61ba1cf9 | 1741 | |
16649710 ILT |
1742 | if (sym_index != -1U) |
1743 | { | |
6a469986 | 1744 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1745 | sym, sym->value(), shndx, sympool, ps |
6a469986 | 1746 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 ILT |
1747 | ps += sym_size; |
1748 | } | |
61ba1cf9 | 1749 | |
16649710 ILT |
1750 | if (dynsym_index != -1U) |
1751 | { | |
1752 | dynsym_index -= first_dynamic_global_index; | |
1753 | gold_assert(dynsym_index < dynamic_count); | |
1754 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
6a469986 | 1755 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1756 | sym, value, shndx, dynpool, pd |
6a469986 | 1757 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 | 1758 | } |
61ba1cf9 ILT |
1759 | } |
1760 | ||
a3ad94ed | 1761 | gold_assert(ps - psyms == oview_size); |
c06b7b0b ILT |
1762 | |
1763 | of->write_output_view(this->offset_, oview_size, psyms); | |
16649710 ILT |
1764 | if (dynamic_view != NULL) |
1765 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
1766 | } | |
1767 | ||
1768 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
1769 | // strtab holding the name. | |
1770 | ||
1771 | template<int size, bool big_endian> | |
1772 | void | |
ab5c9e90 ILT |
1773 | Symbol_table::sized_write_symbol( |
1774 | Sized_symbol<size>* sym, | |
1775 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1776 | unsigned int shndx, | |
1777 | const Stringpool* pool, | |
1778 | unsigned char* p | |
1779 | ACCEPT_SIZE_ENDIAN) const | |
16649710 ILT |
1780 | { |
1781 | elfcpp::Sym_write<size, big_endian> osym(p); | |
1782 | osym.put_st_name(pool->get_offset(sym->name())); | |
ab5c9e90 | 1783 | osym.put_st_value(value); |
16649710 ILT |
1784 | osym.put_st_size(sym->symsize()); |
1785 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
1786 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); | |
1787 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1788 | } |
1789 | ||
9a2d6984 ILT |
1790 | // Check for unresolved symbols in shared libraries. This is |
1791 | // controlled by the --allow-shlib-undefined option. | |
1792 | ||
1793 | // We only warn about libraries for which we have seen all the | |
1794 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
1795 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
1796 | // entry, we aren't going to be able to reliably report whether the | |
1797 | // symbol is undefined. | |
1798 | ||
1799 | // We also don't warn about libraries found in the system library | |
1800 | // directory (the directory were we find libc.so); we assume that | |
1801 | // those libraries are OK. This heuristic avoids problems in | |
1802 | // GNU/Linux, in which -ldl can have undefined references satisfied by | |
1803 | // ld-linux.so. | |
1804 | ||
1805 | inline void | |
1806 | Symbol_table::warn_about_undefined_dynobj_symbol( | |
1807 | const Input_objects* input_objects, | |
1808 | Symbol* sym) const | |
1809 | { | |
1810 | if (sym->source() == Symbol::FROM_OBJECT | |
1811 | && sym->object()->is_dynamic() | |
1812 | && sym->shndx() == elfcpp::SHN_UNDEF | |
1813 | && sym->binding() != elfcpp::STB_WEAK | |
1814 | && !parameters->allow_shlib_undefined() | |
1815 | && !input_objects->target()->is_defined_by_abi(sym) | |
1816 | && !input_objects->found_in_system_library_directory(sym->object())) | |
1817 | { | |
1818 | // A very ugly cast. | |
1819 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
1820 | if (!dynobj->has_unknown_needed_entries()) | |
1821 | gold_error(_("%s: undefined reference to '%s'"), | |
a2b1aa12 ILT |
1822 | sym->object()->name().c_str(), |
1823 | sym->demangled_name().c_str()); | |
9a2d6984 ILT |
1824 | } |
1825 | } | |
1826 | ||
a3ad94ed ILT |
1827 | // Write out a section symbol. Return the update offset. |
1828 | ||
1829 | void | |
9025d29d | 1830 | Symbol_table::write_section_symbol(const Output_section *os, |
a3ad94ed ILT |
1831 | Output_file* of, |
1832 | off_t offset) const | |
1833 | { | |
9025d29d | 1834 | if (parameters->get_size() == 32) |
a3ad94ed | 1835 | { |
9025d29d ILT |
1836 | if (parameters->is_big_endian()) |
1837 | { | |
1838 | #ifdef HAVE_TARGET_32_BIG | |
1839 | this->sized_write_section_symbol<32, true>(os, of, offset); | |
1840 | #else | |
1841 | gold_unreachable(); | |
1842 | #endif | |
1843 | } | |
a3ad94ed | 1844 | else |
9025d29d ILT |
1845 | { |
1846 | #ifdef HAVE_TARGET_32_LITTLE | |
1847 | this->sized_write_section_symbol<32, false>(os, of, offset); | |
1848 | #else | |
1849 | gold_unreachable(); | |
1850 | #endif | |
1851 | } | |
a3ad94ed | 1852 | } |
9025d29d | 1853 | else if (parameters->get_size() == 64) |
a3ad94ed | 1854 | { |
9025d29d ILT |
1855 | if (parameters->is_big_endian()) |
1856 | { | |
1857 | #ifdef HAVE_TARGET_64_BIG | |
1858 | this->sized_write_section_symbol<64, true>(os, of, offset); | |
1859 | #else | |
1860 | gold_unreachable(); | |
1861 | #endif | |
1862 | } | |
a3ad94ed | 1863 | else |
9025d29d ILT |
1864 | { |
1865 | #ifdef HAVE_TARGET_64_LITTLE | |
1866 | this->sized_write_section_symbol<64, false>(os, of, offset); | |
1867 | #else | |
1868 | gold_unreachable(); | |
1869 | #endif | |
1870 | } | |
a3ad94ed ILT |
1871 | } |
1872 | else | |
1873 | gold_unreachable(); | |
1874 | } | |
1875 | ||
1876 | // Write out a section symbol, specialized for size and endianness. | |
1877 | ||
1878 | template<int size, bool big_endian> | |
1879 | void | |
1880 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
1881 | Output_file* of, | |
1882 | off_t offset) const | |
1883 | { | |
1884 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1885 | ||
1886 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
1887 | ||
1888 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
1889 | osym.put_st_name(0); | |
1890 | osym.put_st_value(os->address()); | |
1891 | osym.put_st_size(0); | |
1892 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
1893 | elfcpp::STT_SECTION)); | |
1894 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
1895 | osym.put_st_shndx(os->out_shndx()); | |
1896 | ||
1897 | of->write_output_view(offset, sym_size, pov); | |
1898 | } | |
1899 | ||
abaa3995 ILT |
1900 | // Print statistical information to stderr. This is used for --stats. |
1901 | ||
1902 | void | |
1903 | Symbol_table::print_stats() const | |
1904 | { | |
1905 | #if defined(HAVE_TR1_UNORDERED_MAP) || defined(HAVE_EXT_HASH_MAP) | |
1906 | fprintf(stderr, _("%s: symbol table entries: %zu; buckets: %zu\n"), | |
1907 | program_name, this->table_.size(), this->table_.bucket_count()); | |
1908 | #else | |
1909 | fprintf(stderr, _("%s: symbol table entries: %zu\n"), | |
1910 | program_name, this->table_.size()); | |
1911 | #endif | |
ad8f37d1 | 1912 | this->namepool_.print_stats("symbol table stringpool"); |
abaa3995 ILT |
1913 | } |
1914 | ||
ff541f30 ILT |
1915 | // We check for ODR violations by looking for symbols with the same |
1916 | // name for which the debugging information reports that they were | |
1917 | // defined in different source locations. When comparing the source | |
1918 | // location, we consider instances with the same base filename and | |
1919 | // line number to be the same. This is because different object | |
1920 | // files/shared libraries can include the same header file using | |
1921 | // different paths, and we don't want to report an ODR violation in | |
1922 | // that case. | |
1923 | ||
1924 | // This struct is used to compare line information, as returned by | |
7bf1f802 | 1925 | // Dwarf_line_info::one_addr2line. It implements a < comparison |
ff541f30 ILT |
1926 | // operator used with std::set. |
1927 | ||
1928 | struct Odr_violation_compare | |
1929 | { | |
1930 | bool | |
1931 | operator()(const std::string& s1, const std::string& s2) const | |
1932 | { | |
1933 | std::string::size_type pos1 = s1.rfind('/'); | |
1934 | std::string::size_type pos2 = s2.rfind('/'); | |
1935 | if (pos1 == std::string::npos | |
1936 | || pos2 == std::string::npos) | |
1937 | return s1 < s2; | |
1938 | return s1.compare(pos1, std::string::npos, | |
1939 | s2, pos2, std::string::npos) < 0; | |
1940 | } | |
1941 | }; | |
1942 | ||
70e654ba ILT |
1943 | // Check candidate_odr_violations_ to find symbols with the same name |
1944 | // but apparently different definitions (different source-file/line-no). | |
1945 | ||
1946 | void | |
78f15696 | 1947 | Symbol_table::detect_odr_violations(const char* output_file_name) const |
70e654ba ILT |
1948 | { |
1949 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
1950 | it != candidate_odr_violations_.end(); | |
1951 | ++it) | |
1952 | { | |
1953 | const char* symbol_name = it->first; | |
1954 | // We use a sorted set so the output is deterministic. | |
ff541f30 | 1955 | std::set<std::string, Odr_violation_compare> line_nums; |
70e654ba | 1956 | |
b01c0a4a ILT |
1957 | for (Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator |
1958 | locs = it->second.begin(); | |
1959 | locs != it->second.end(); | |
1960 | ++locs) | |
70e654ba ILT |
1961 | { |
1962 | // We need to lock the object in order to read it. This | |
1963 | // means that we can not run inside a Task. If we want to | |
1964 | // run this in a Task for better performance, we will need | |
1965 | // one Task for object, plus appropriate locking to ensure | |
1966 | // that we don't conflict with other uses of the object. | |
1967 | locs->object->lock(); | |
a55ce7fe ILT |
1968 | std::string lineno = Dwarf_line_info::one_addr2line( |
1969 | locs->object, locs->shndx, locs->offset); | |
70e654ba | 1970 | locs->object->unlock(); |
70e654ba ILT |
1971 | if (!lineno.empty()) |
1972 | line_nums.insert(lineno); | |
1973 | } | |
1974 | ||
1975 | if (line_nums.size() > 1) | |
1976 | { | |
dd8670e5 | 1977 | gold_warning(_("while linking %s: symbol '%s' defined in multiple " |
78f15696 | 1978 | "places (possible ODR violation):"), |
a2b1aa12 | 1979 | output_file_name, demangle(symbol_name).c_str()); |
70e654ba ILT |
1980 | for (std::set<std::string>::const_iterator it2 = line_nums.begin(); |
1981 | it2 != line_nums.end(); | |
1982 | ++it2) | |
1983 | fprintf(stderr, " %s\n", it2->c_str()); | |
1984 | } | |
1985 | } | |
1986 | } | |
1987 | ||
f6ce93d6 ILT |
1988 | // Warnings functions. |
1989 | ||
1990 | // Add a new warning. | |
1991 | ||
1992 | void | |
1993 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
1994 | unsigned int shndx) | |
1995 | { | |
1996 | name = symtab->canonicalize_name(name); | |
1997 | this->warnings_[name].set(obj, shndx); | |
1998 | } | |
1999 | ||
2000 | // Look through the warnings and mark the symbols for which we should | |
2001 | // warn. This is called during Layout::finalize when we know the | |
2002 | // sources for all the symbols. | |
2003 | ||
2004 | void | |
2005 | Warnings::note_warnings(Symbol_table* symtab) | |
2006 | { | |
2007 | for (Warning_table::iterator p = this->warnings_.begin(); | |
2008 | p != this->warnings_.end(); | |
2009 | ++p) | |
2010 | { | |
2011 | Symbol* sym = symtab->lookup(p->first, NULL); | |
2012 | if (sym != NULL | |
2013 | && sym->source() == Symbol::FROM_OBJECT | |
2014 | && sym->object() == p->second.object) | |
2015 | { | |
2016 | sym->set_has_warning(); | |
2017 | ||
2018 | // Read the section contents to get the warning text. It | |
2019 | // would be nicer if we only did this if we have to actually | |
2020 | // issue a warning. Unfortunately, warnings are issued as | |
2021 | // we relocate sections. That means that we can not lock | |
2022 | // the object then, as we might try to issue the same | |
2023 | // warning multiple times simultaneously. | |
645f8123 ILT |
2024 | { |
2025 | Task_locker_obj<Object> tl(*p->second.object); | |
2026 | const unsigned char* c; | |
2027 | off_t len; | |
9eb9fa57 ILT |
2028 | c = p->second.object->section_contents(p->second.shndx, &len, |
2029 | false); | |
645f8123 ILT |
2030 | p->second.set_text(reinterpret_cast<const char*>(c), len); |
2031 | } | |
f6ce93d6 ILT |
2032 | } |
2033 | } | |
2034 | } | |
2035 | ||
2036 | // Issue a warning. This is called when we see a relocation against a | |
2037 | // symbol for which has a warning. | |
2038 | ||
75f2446e | 2039 | template<int size, bool big_endian> |
f6ce93d6 | 2040 | void |
75f2446e ILT |
2041 | Warnings::issue_warning(const Symbol* sym, |
2042 | const Relocate_info<size, big_endian>* relinfo, | |
2043 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 2044 | { |
a3ad94ed | 2045 | gold_assert(sym->has_warning()); |
f6ce93d6 | 2046 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 2047 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
2048 | gold_warning_at_location(relinfo, relnum, reloffset, |
2049 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
2050 | } |
2051 | ||
14bfc3f5 ILT |
2052 | // Instantiate the templates we need. We could use the configure |
2053 | // script to restrict this to only the ones needed for implemented | |
2054 | // targets. | |
2055 | ||
c7912668 ILT |
2056 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2057 | template | |
2058 | void | |
2059 | Sized_symbol<32>::allocate_common(Output_data*, Value_type); | |
2060 | #endif | |
2061 | ||
2062 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2063 | template | |
2064 | void | |
2065 | Sized_symbol<64>::allocate_common(Output_data*, Value_type); | |
2066 | #endif | |
2067 | ||
193a53d9 | 2068 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
2069 | template |
2070 | void | |
193a53d9 ILT |
2071 | Symbol_table::add_from_relobj<32, false>( |
2072 | Sized_relobj<32, false>* relobj, | |
f6ce93d6 | 2073 | const unsigned char* syms, |
14bfc3f5 ILT |
2074 | size_t count, |
2075 | const char* sym_names, | |
2076 | size_t sym_name_size, | |
730cdc88 | 2077 | Sized_relobj<32, true>::Symbols* sympointers); |
193a53d9 | 2078 | #endif |
14bfc3f5 | 2079 | |
193a53d9 | 2080 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
2081 | template |
2082 | void | |
193a53d9 ILT |
2083 | Symbol_table::add_from_relobj<32, true>( |
2084 | Sized_relobj<32, true>* relobj, | |
f6ce93d6 | 2085 | const unsigned char* syms, |
14bfc3f5 ILT |
2086 | size_t count, |
2087 | const char* sym_names, | |
2088 | size_t sym_name_size, | |
730cdc88 | 2089 | Sized_relobj<32, false>::Symbols* sympointers); |
193a53d9 | 2090 | #endif |
14bfc3f5 | 2091 | |
193a53d9 | 2092 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
2093 | template |
2094 | void | |
193a53d9 ILT |
2095 | Symbol_table::add_from_relobj<64, false>( |
2096 | Sized_relobj<64, false>* relobj, | |
f6ce93d6 | 2097 | const unsigned char* syms, |
14bfc3f5 ILT |
2098 | size_t count, |
2099 | const char* sym_names, | |
2100 | size_t sym_name_size, | |
730cdc88 | 2101 | Sized_relobj<64, true>::Symbols* sympointers); |
193a53d9 | 2102 | #endif |
14bfc3f5 | 2103 | |
193a53d9 | 2104 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
2105 | template |
2106 | void | |
193a53d9 ILT |
2107 | Symbol_table::add_from_relobj<64, true>( |
2108 | Sized_relobj<64, true>* relobj, | |
f6ce93d6 | 2109 | const unsigned char* syms, |
14bfc3f5 ILT |
2110 | size_t count, |
2111 | const char* sym_names, | |
2112 | size_t sym_name_size, | |
730cdc88 | 2113 | Sized_relobj<64, false>::Symbols* sympointers); |
193a53d9 | 2114 | #endif |
14bfc3f5 | 2115 | |
193a53d9 | 2116 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
2117 | template |
2118 | void | |
193a53d9 ILT |
2119 | Symbol_table::add_from_dynobj<32, false>( |
2120 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
2121 | const unsigned char* syms, |
2122 | size_t count, | |
2123 | const char* sym_names, | |
2124 | size_t sym_name_size, | |
2125 | const unsigned char* versym, | |
2126 | size_t versym_size, | |
2127 | const std::vector<const char*>* version_map); | |
193a53d9 | 2128 | #endif |
dbe717ef | 2129 | |
193a53d9 | 2130 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
2131 | template |
2132 | void | |
193a53d9 ILT |
2133 | Symbol_table::add_from_dynobj<32, true>( |
2134 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
2135 | const unsigned char* syms, |
2136 | size_t count, | |
2137 | const char* sym_names, | |
2138 | size_t sym_name_size, | |
2139 | const unsigned char* versym, | |
2140 | size_t versym_size, | |
2141 | const std::vector<const char*>* version_map); | |
193a53d9 | 2142 | #endif |
dbe717ef | 2143 | |
193a53d9 | 2144 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
2145 | template |
2146 | void | |
193a53d9 ILT |
2147 | Symbol_table::add_from_dynobj<64, false>( |
2148 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
2149 | const unsigned char* syms, |
2150 | size_t count, | |
2151 | const char* sym_names, | |
2152 | size_t sym_name_size, | |
2153 | const unsigned char* versym, | |
2154 | size_t versym_size, | |
2155 | const std::vector<const char*>* version_map); | |
193a53d9 | 2156 | #endif |
dbe717ef | 2157 | |
193a53d9 | 2158 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
2159 | template |
2160 | void | |
193a53d9 ILT |
2161 | Symbol_table::add_from_dynobj<64, true>( |
2162 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
2163 | const unsigned char* syms, |
2164 | size_t count, | |
2165 | const char* sym_names, | |
2166 | size_t sym_name_size, | |
2167 | const unsigned char* versym, | |
2168 | size_t versym_size, | |
2169 | const std::vector<const char*>* version_map); | |
193a53d9 | 2170 | #endif |
dbe717ef | 2171 | |
46fe1623 ILT |
2172 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2173 | template | |
2174 | void | |
2175 | Symbol_table::define_with_copy_reloc<32>(const Target* target, | |
2176 | Sized_symbol<32>* sym, | |
2177 | Output_data* posd, uint64_t value); | |
2178 | #endif | |
2179 | ||
2180 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2181 | template | |
2182 | void | |
2183 | Symbol_table::define_with_copy_reloc<64>(const Target* target, | |
2184 | Sized_symbol<64>* sym, | |
2185 | Output_data* posd, uint64_t value); | |
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. |