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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 | } | |
dbe717ef | 483 | else if (insdef.first->second != ret) |
14bfc3f5 ILT |
484 | { |
485 | // This is the unfortunate case where we already have | |
486 | // entries for both NAME/VERSION and NAME/NULL. | |
274e99f9 | 487 | const Sized_symbol<size>* sym2; |
593f47df | 488 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
489 | insdef.first->second |
490 | SELECT_SIZE(size)); | |
593f47df | 491 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
14b31740 | 492 | ret, sym2, version SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
493 | this->make_forwarder(insdef.first->second, ret); |
494 | insdef.first->second = ret; | |
495 | } | |
496 | } | |
497 | } | |
498 | else | |
499 | { | |
500 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 501 | gold_assert(ins.first->second == NULL); |
ead1e424 ILT |
502 | |
503 | was_undefined = false; | |
504 | was_common = false; | |
505 | ||
14bfc3f5 ILT |
506 | if (def && !insdef.second) |
507 | { | |
14b31740 ILT |
508 | // We already have an entry for NAME/NULL. If we override |
509 | // it, then change it to NAME/VERSION. | |
593f47df ILT |
510 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
511 | insdef.first->second | |
512 | SELECT_SIZE(size)); | |
70e654ba | 513 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
514 | ins.first->second = ret; |
515 | } | |
516 | else | |
517 | { | |
f6ce93d6 ILT |
518 | Sized_target<size, big_endian>* target = |
519 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
520 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
521 | if (!target->has_make_symbol()) |
522 | ret = new Sized_symbol<size>(); | |
523 | else | |
14bfc3f5 | 524 | { |
1564db8d ILT |
525 | ret = target->make_symbol(); |
526 | if (ret == NULL) | |
14bfc3f5 ILT |
527 | { |
528 | // This means that we don't want a symbol table | |
529 | // entry after all. | |
530 | if (!def) | |
531 | this->table_.erase(ins.first); | |
532 | else | |
533 | { | |
534 | this->table_.erase(insdef.first); | |
535 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
536 | this->table_.erase(std::make_pair(name_key, |
537 | version_key)); | |
14bfc3f5 ILT |
538 | } |
539 | return NULL; | |
540 | } | |
541 | } | |
14bfc3f5 | 542 | |
1564db8d ILT |
543 | ret->init(name, version, object, sym); |
544 | ||
14bfc3f5 ILT |
545 | ins.first->second = ret; |
546 | if (def) | |
547 | { | |
548 | // This is the first time we have seen NAME/NULL. Point | |
549 | // it at the new entry for NAME/VERSION. | |
a3ad94ed | 550 | gold_assert(insdef.second); |
14bfc3f5 ILT |
551 | insdef.first->second = ret; |
552 | } | |
553 | } | |
554 | } | |
555 | ||
ead1e424 ILT |
556 | // Record every time we see a new undefined symbol, to speed up |
557 | // archive groups. | |
558 | if (!was_undefined && ret->is_undefined()) | |
559 | ++this->saw_undefined_; | |
560 | ||
561 | // Keep track of common symbols, to speed up common symbol | |
562 | // allocation. | |
563 | if (!was_common && ret->is_common()) | |
564 | this->commons_.push_back(ret); | |
565 | ||
14bfc3f5 ILT |
566 | return ret; |
567 | } | |
568 | ||
f6ce93d6 | 569 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
570 | |
571 | template<int size, bool big_endian> | |
572 | void | |
dbe717ef ILT |
573 | Symbol_table::add_from_relobj( |
574 | Sized_relobj<size, big_endian>* relobj, | |
f6ce93d6 | 575 | const unsigned char* syms, |
14bfc3f5 ILT |
576 | size_t count, |
577 | const char* sym_names, | |
578 | size_t sym_name_size, | |
730cdc88 | 579 | typename Sized_relobj<size, big_endian>::Symbols* sympointers) |
14bfc3f5 | 580 | { |
9025d29d ILT |
581 | gold_assert(size == relobj->target()->get_size()); |
582 | gold_assert(size == parameters->get_size()); | |
14bfc3f5 | 583 | |
a783673b ILT |
584 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
585 | ||
f6ce93d6 | 586 | const unsigned char* p = syms; |
a783673b | 587 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
588 | { |
589 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 590 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 591 | |
a783673b | 592 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
593 | if (st_name >= sym_name_size) |
594 | { | |
75f2446e ILT |
595 | relobj->error(_("bad global symbol name offset %u at %zu"), |
596 | st_name, i); | |
597 | continue; | |
14bfc3f5 ILT |
598 | } |
599 | ||
dbe717ef ILT |
600 | const char* name = sym_names + st_name; |
601 | ||
a783673b ILT |
602 | // A symbol defined in a section which we are not including must |
603 | // be treated as an undefined symbol. | |
604 | unsigned char symbuf[sym_size]; | |
605 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
606 | unsigned int st_shndx = psym->get_st_shndx(); | |
607 | if (st_shndx != elfcpp::SHN_UNDEF | |
608 | && st_shndx < elfcpp::SHN_LORESERVE | |
dbe717ef | 609 | && !relobj->is_section_included(st_shndx)) |
a783673b ILT |
610 | { |
611 | memcpy(symbuf, p, sym_size); | |
612 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
613 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
614 | psym = &sym2; | |
615 | } | |
616 | ||
14bfc3f5 ILT |
617 | // In an object file, an '@' in the name separates the symbol |
618 | // name from the version name. If there are two '@' characters, | |
619 | // this is the default version. | |
620 | const char* ver = strchr(name, '@'); | |
621 | ||
aeddab66 | 622 | Sized_symbol<size>* res; |
14bfc3f5 ILT |
623 | if (ver == NULL) |
624 | { | |
f0641a0b | 625 | Stringpool::Key name_key; |
cfd73a4e | 626 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 627 | res = this->add_from_object(relobj, name, name_key, NULL, 0, |
70e654ba | 628 | false, *psym, sym); |
14bfc3f5 ILT |
629 | } |
630 | else | |
631 | { | |
f0641a0b | 632 | Stringpool::Key name_key; |
c0873094 ILT |
633 | name = this->namepool_.add_with_length(name, ver - name, true, |
634 | &name_key); | |
f0641a0b | 635 | |
14bfc3f5 ILT |
636 | bool def = false; |
637 | ++ver; | |
638 | if (*ver == '@') | |
639 | { | |
640 | def = true; | |
641 | ++ver; | |
642 | } | |
f0641a0b ILT |
643 | |
644 | Stringpool::Key ver_key; | |
cfd73a4e | 645 | ver = this->namepool_.add(ver, true, &ver_key); |
f0641a0b | 646 | |
dbe717ef | 647 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
70e654ba | 648 | def, *psym, sym); |
14bfc3f5 ILT |
649 | } |
650 | ||
730cdc88 | 651 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
652 | } |
653 | } | |
654 | ||
dbe717ef ILT |
655 | // Add all the symbols in a dynamic object to the hash table. |
656 | ||
657 | template<int size, bool big_endian> | |
658 | void | |
659 | Symbol_table::add_from_dynobj( | |
660 | Sized_dynobj<size, big_endian>* dynobj, | |
661 | const unsigned char* syms, | |
662 | size_t count, | |
663 | const char* sym_names, | |
664 | size_t sym_name_size, | |
665 | const unsigned char* versym, | |
666 | size_t versym_size, | |
667 | const std::vector<const char*>* version_map) | |
668 | { | |
9025d29d ILT |
669 | gold_assert(size == dynobj->target()->get_size()); |
670 | gold_assert(size == parameters->get_size()); | |
dbe717ef ILT |
671 | |
672 | if (versym != NULL && versym_size / 2 < count) | |
673 | { | |
75f2446e ILT |
674 | dynobj->error(_("too few symbol versions")); |
675 | return; | |
dbe717ef ILT |
676 | } |
677 | ||
678 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
679 | ||
aeddab66 ILT |
680 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
681 | // weak aliases. This is necessary because if the dynamic object | |
682 | // provides the same variable under two names, one of which is a | |
683 | // weak definition, and the regular object refers to the weak | |
684 | // definition, we have to put both the weak definition and the | |
685 | // strong definition into the dynamic symbol table. Given a weak | |
686 | // definition, the only way that we can find the corresponding | |
687 | // strong definition, if any, is to search the symbol table. | |
688 | std::vector<Sized_symbol<size>*> object_symbols; | |
689 | ||
dbe717ef ILT |
690 | const unsigned char* p = syms; |
691 | const unsigned char* vs = versym; | |
692 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
693 | { | |
694 | elfcpp::Sym<size, big_endian> sym(p); | |
695 | ||
696 | // Ignore symbols with local binding. | |
697 | if (sym.get_st_bind() == elfcpp::STB_LOCAL) | |
698 | continue; | |
699 | ||
700 | unsigned int st_name = sym.get_st_name(); | |
701 | if (st_name >= sym_name_size) | |
702 | { | |
75f2446e ILT |
703 | dynobj->error(_("bad symbol name offset %u at %zu"), |
704 | st_name, i); | |
705 | continue; | |
dbe717ef ILT |
706 | } |
707 | ||
708 | const char* name = sym_names + st_name; | |
709 | ||
aeddab66 ILT |
710 | Sized_symbol<size>* res; |
711 | ||
dbe717ef ILT |
712 | if (versym == NULL) |
713 | { | |
714 | Stringpool::Key name_key; | |
cfd73a4e | 715 | name = this->namepool_.add(name, true, &name_key); |
aeddab66 | 716 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
70e654ba | 717 | false, sym, sym); |
dbe717ef | 718 | } |
aeddab66 ILT |
719 | else |
720 | { | |
721 | // Read the version information. | |
dbe717ef | 722 | |
aeddab66 | 723 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 724 | |
aeddab66 ILT |
725 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
726 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 727 | |
aeddab66 ILT |
728 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
729 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
730 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
731 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
732 | // for an undefined symbol. I don't know what the Sun | |
733 | // linker will generate. | |
dbe717ef | 734 | |
aeddab66 ILT |
735 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
736 | && sym.get_st_shndx() != elfcpp::SHN_UNDEF) | |
737 | { | |
738 | // This symbol should not be visible outside the object. | |
739 | continue; | |
740 | } | |
64707334 | 741 | |
aeddab66 ILT |
742 | // At this point we are definitely going to add this symbol. |
743 | Stringpool::Key name_key; | |
744 | name = this->namepool_.add(name, true, &name_key); | |
dbe717ef | 745 | |
aeddab66 ILT |
746 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
747 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
748 | { | |
749 | // This symbol does not have a version. | |
750 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 751 | false, sym, sym); |
aeddab66 ILT |
752 | } |
753 | else | |
754 | { | |
755 | if (v >= version_map->size()) | |
756 | { | |
757 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
758 | i, v); | |
759 | continue; | |
760 | } | |
dbe717ef | 761 | |
aeddab66 ILT |
762 | const char* version = (*version_map)[v]; |
763 | if (version == NULL) | |
764 | { | |
765 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
766 | i, v); | |
767 | continue; | |
768 | } | |
dbe717ef | 769 | |
aeddab66 ILT |
770 | Stringpool::Key version_key; |
771 | version = this->namepool_.add(version, true, &version_key); | |
772 | ||
773 | // If this is an absolute symbol, and the version name | |
774 | // and symbol name are the same, then this is the | |
775 | // version definition symbol. These symbols exist to | |
776 | // support using -u to pull in particular versions. We | |
777 | // do not want to record a version for them. | |
778 | if (sym.get_st_shndx() == elfcpp::SHN_ABS | |
779 | && name_key == version_key) | |
780 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 781 | false, sym, sym); |
aeddab66 ILT |
782 | else |
783 | { | |
784 | const bool def = (!hidden | |
785 | && (sym.get_st_shndx() | |
786 | != elfcpp::SHN_UNDEF)); | |
787 | res = this->add_from_object(dynobj, name, name_key, version, | |
70e654ba | 788 | version_key, def, sym, sym); |
aeddab66 ILT |
789 | } |
790 | } | |
dbe717ef ILT |
791 | } |
792 | ||
aeddab66 ILT |
793 | if (sym.get_st_shndx() != elfcpp::SHN_UNDEF |
794 | && sym.get_st_type() == elfcpp::STT_OBJECT) | |
795 | object_symbols.push_back(res); | |
796 | } | |
797 | ||
798 | this->record_weak_aliases(&object_symbols); | |
799 | } | |
800 | ||
801 | // This is used to sort weak aliases. We sort them first by section | |
802 | // index, then by offset, then by weak ahead of strong. | |
803 | ||
804 | template<int size> | |
805 | class Weak_alias_sorter | |
806 | { | |
807 | public: | |
808 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
809 | }; | |
810 | ||
811 | template<int size> | |
812 | bool | |
813 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
814 | const Sized_symbol<size>* s2) const | |
815 | { | |
816 | if (s1->shndx() != s2->shndx()) | |
817 | return s1->shndx() < s2->shndx(); | |
818 | if (s1->value() != s2->value()) | |
819 | return s1->value() < s2->value(); | |
820 | if (s1->binding() != s2->binding()) | |
821 | { | |
822 | if (s1->binding() == elfcpp::STB_WEAK) | |
823 | return true; | |
824 | if (s2->binding() == elfcpp::STB_WEAK) | |
825 | return false; | |
826 | } | |
827 | return std::string(s1->name()) < std::string(s2->name()); | |
828 | } | |
dbe717ef | 829 | |
aeddab66 ILT |
830 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
831 | // for any weak aliases, and record them so that if we add the weak | |
832 | // alias to the dynamic symbol table, we also add the corresponding | |
833 | // strong symbol. | |
dbe717ef | 834 | |
aeddab66 ILT |
835 | template<int size> |
836 | void | |
837 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
838 | { | |
839 | // Sort the vector by section index, then by offset, then by weak | |
840 | // ahead of strong. | |
841 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
842 | ||
843 | // Walk through the vector. For each weak definition, record | |
844 | // aliases. | |
845 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
846 | symbols->begin(); | |
847 | p != symbols->end(); | |
848 | ++p) | |
849 | { | |
850 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
851 | continue; | |
852 | ||
853 | // Build a circular list of weak aliases. Each symbol points to | |
854 | // the next one in the circular list. | |
855 | ||
856 | Sized_symbol<size>* from_sym = *p; | |
857 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
858 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 859 | { |
aeddab66 ILT |
860 | if ((*q)->shndx() != from_sym->shndx() |
861 | || (*q)->value() != from_sym->value()) | |
862 | break; | |
863 | ||
864 | this->weak_aliases_[from_sym] = *q; | |
865 | from_sym->set_has_alias(); | |
866 | from_sym = *q; | |
dbe717ef ILT |
867 | } |
868 | ||
aeddab66 ILT |
869 | if (from_sym != *p) |
870 | { | |
871 | this->weak_aliases_[from_sym] = *p; | |
872 | from_sym->set_has_alias(); | |
873 | } | |
dbe717ef | 874 | |
aeddab66 | 875 | p = q - 1; |
dbe717ef ILT |
876 | } |
877 | } | |
878 | ||
ead1e424 ILT |
879 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
880 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 881 | // If this does not return NULL, it sets *POLDSYM to the existing |
306d9ef0 | 882 | // symbol if there is one. This canonicalizes *PNAME and *PVERSION. |
ead1e424 ILT |
883 | |
884 | template<int size, bool big_endian> | |
885 | Sized_symbol<size>* | |
306d9ef0 ILT |
886 | Symbol_table::define_special_symbol(const Target* target, const char** pname, |
887 | const char** pversion, bool only_if_ref, | |
86f2e683 | 888 | Sized_symbol<size>** poldsym |
593f47df | 889 | ACCEPT_SIZE_ENDIAN) |
ead1e424 | 890 | { |
ead1e424 ILT |
891 | Symbol* oldsym; |
892 | Sized_symbol<size>* sym; | |
86f2e683 ILT |
893 | bool add_to_table = false; |
894 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
ead1e424 ILT |
895 | |
896 | if (only_if_ref) | |
897 | { | |
306d9ef0 | 898 | oldsym = this->lookup(*pname, *pversion); |
f6ce93d6 | 899 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 900 | return NULL; |
306d9ef0 ILT |
901 | |
902 | *pname = oldsym->name(); | |
903 | *pversion = oldsym->version(); | |
ead1e424 ILT |
904 | } |
905 | else | |
906 | { | |
14b31740 | 907 | // Canonicalize NAME and VERSION. |
f0641a0b | 908 | Stringpool::Key name_key; |
cfd73a4e | 909 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 910 | |
14b31740 | 911 | Stringpool::Key version_key = 0; |
306d9ef0 | 912 | if (*pversion != NULL) |
cfd73a4e | 913 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 914 | |
ead1e424 | 915 | Symbol* const snull = NULL; |
ead1e424 | 916 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
917 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
918 | version_key), | |
ead1e424 ILT |
919 | snull)); |
920 | ||
921 | if (!ins.second) | |
922 | { | |
14b31740 | 923 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 924 | oldsym = ins.first->second; |
a3ad94ed | 925 | gold_assert(oldsym != NULL); |
ead1e424 ILT |
926 | } |
927 | else | |
928 | { | |
929 | // We haven't seen this symbol before. | |
a3ad94ed | 930 | gold_assert(ins.first->second == NULL); |
86f2e683 ILT |
931 | add_to_table = true; |
932 | add_loc = ins.first; | |
ead1e424 ILT |
933 | oldsym = NULL; |
934 | } | |
935 | } | |
936 | ||
86f2e683 ILT |
937 | if (!target->has_make_symbol()) |
938 | sym = new Sized_symbol<size>(); | |
939 | else | |
ead1e424 | 940 | { |
86f2e683 ILT |
941 | gold_assert(target->get_size() == size); |
942 | gold_assert(target->is_big_endian() ? big_endian : !big_endian); | |
943 | typedef Sized_target<size, big_endian> My_target; | |
944 | const My_target* sized_target = | |
945 | static_cast<const My_target*>(target); | |
946 | sym = sized_target->make_symbol(); | |
947 | if (sym == NULL) | |
948 | return NULL; | |
949 | } | |
ead1e424 | 950 | |
86f2e683 ILT |
951 | if (add_to_table) |
952 | add_loc->second = sym; | |
953 | else | |
954 | gold_assert(oldsym != NULL); | |
ead1e424 | 955 | |
86f2e683 ILT |
956 | *poldsym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
957 | SELECT_SIZE(size)); | |
ead1e424 ILT |
958 | |
959 | return sym; | |
960 | } | |
961 | ||
962 | // Define a symbol based on an Output_data. | |
963 | ||
14b31740 ILT |
964 | Symbol* |
965 | Symbol_table::define_in_output_data(const Target* target, const char* name, | |
966 | const char* version, Output_data* od, | |
ead1e424 ILT |
967 | uint64_t value, uint64_t symsize, |
968 | elfcpp::STT type, elfcpp::STB binding, | |
969 | elfcpp::STV visibility, | |
970 | unsigned char nonvis, | |
971 | bool offset_is_from_end, | |
972 | bool only_if_ref) | |
973 | { | |
9025d29d | 974 | if (parameters->get_size() == 32) |
86f2e683 ILT |
975 | { |
976 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
977 | return this->do_define_in_output_data<32>(target, name, version, od, | |
978 | value, symsize, type, binding, | |
979 | visibility, nonvis, | |
980 | offset_is_from_end, | |
981 | only_if_ref); | |
982 | #else | |
983 | gold_unreachable(); | |
984 | #endif | |
985 | } | |
9025d29d | 986 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
987 | { |
988 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
989 | return this->do_define_in_output_data<64>(target, name, version, od, | |
990 | value, symsize, type, binding, | |
991 | visibility, nonvis, | |
992 | offset_is_from_end, | |
993 | only_if_ref); | |
994 | #else | |
995 | gold_unreachable(); | |
996 | #endif | |
997 | } | |
ead1e424 | 998 | else |
a3ad94ed | 999 | gold_unreachable(); |
ead1e424 ILT |
1000 | } |
1001 | ||
1002 | // Define a symbol in an Output_data, sized version. | |
1003 | ||
1004 | template<int size> | |
14b31740 | 1005 | Sized_symbol<size>* |
ead1e424 | 1006 | Symbol_table::do_define_in_output_data( |
14b31740 | 1007 | const Target* target, |
ead1e424 | 1008 | const char* name, |
14b31740 | 1009 | const char* version, |
ead1e424 ILT |
1010 | Output_data* od, |
1011 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1012 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1013 | elfcpp::STT type, | |
1014 | elfcpp::STB binding, | |
1015 | elfcpp::STV visibility, | |
1016 | unsigned char nonvis, | |
1017 | bool offset_is_from_end, | |
1018 | bool only_if_ref) | |
1019 | { | |
1020 | Sized_symbol<size>* sym; | |
86f2e683 | 1021 | Sized_symbol<size>* oldsym; |
ead1e424 | 1022 | |
9025d29d | 1023 | if (parameters->is_big_endian()) |
193a53d9 ILT |
1024 | { |
1025 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1026 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
306d9ef0 | 1027 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1028 | SELECT_SIZE_ENDIAN(size, true)); |
1029 | #else | |
1030 | gold_unreachable(); | |
1031 | #endif | |
1032 | } | |
ead1e424 | 1033 | else |
193a53d9 ILT |
1034 | { |
1035 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1036 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
306d9ef0 | 1037 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1038 | SELECT_SIZE_ENDIAN(size, false)); |
1039 | #else | |
1040 | gold_unreachable(); | |
1041 | #endif | |
1042 | } | |
ead1e424 ILT |
1043 | |
1044 | if (sym == NULL) | |
14b31740 | 1045 | return NULL; |
ead1e424 | 1046 | |
d4f5281b | 1047 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1048 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, |
1049 | offset_is_from_end); | |
14b31740 | 1050 | |
86f2e683 ILT |
1051 | if (oldsym != NULL |
1052 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1053 | this->override_with_special(oldsym, sym); |
86f2e683 | 1054 | |
14b31740 | 1055 | return sym; |
ead1e424 ILT |
1056 | } |
1057 | ||
1058 | // Define a symbol based on an Output_segment. | |
1059 | ||
14b31740 ILT |
1060 | Symbol* |
1061 | Symbol_table::define_in_output_segment(const Target* target, const char* name, | |
1062 | const char* version, Output_segment* os, | |
ead1e424 ILT |
1063 | uint64_t value, uint64_t symsize, |
1064 | elfcpp::STT type, elfcpp::STB binding, | |
1065 | elfcpp::STV visibility, | |
1066 | unsigned char nonvis, | |
1067 | Symbol::Segment_offset_base offset_base, | |
1068 | bool only_if_ref) | |
1069 | { | |
9025d29d | 1070 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1071 | { |
1072 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1073 | return this->do_define_in_output_segment<32>(target, name, version, os, | |
1074 | value, symsize, type, | |
1075 | binding, visibility, nonvis, | |
1076 | offset_base, only_if_ref); | |
1077 | #else | |
1078 | gold_unreachable(); | |
1079 | #endif | |
1080 | } | |
9025d29d | 1081 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1082 | { |
1083 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1084 | return this->do_define_in_output_segment<64>(target, name, version, os, | |
1085 | value, symsize, type, | |
1086 | binding, visibility, nonvis, | |
1087 | offset_base, only_if_ref); | |
1088 | #else | |
1089 | gold_unreachable(); | |
1090 | #endif | |
1091 | } | |
ead1e424 | 1092 | else |
a3ad94ed | 1093 | gold_unreachable(); |
ead1e424 ILT |
1094 | } |
1095 | ||
1096 | // Define a symbol in an Output_segment, sized version. | |
1097 | ||
1098 | template<int size> | |
14b31740 | 1099 | Sized_symbol<size>* |
ead1e424 | 1100 | Symbol_table::do_define_in_output_segment( |
14b31740 | 1101 | const Target* target, |
ead1e424 | 1102 | const char* name, |
14b31740 | 1103 | const char* version, |
ead1e424 ILT |
1104 | Output_segment* os, |
1105 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1106 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1107 | elfcpp::STT type, | |
1108 | elfcpp::STB binding, | |
1109 | elfcpp::STV visibility, | |
1110 | unsigned char nonvis, | |
1111 | Symbol::Segment_offset_base offset_base, | |
1112 | bool only_if_ref) | |
1113 | { | |
1114 | Sized_symbol<size>* sym; | |
86f2e683 | 1115 | Sized_symbol<size>* oldsym; |
ead1e424 | 1116 | |
9025d29d ILT |
1117 | if (parameters->is_big_endian()) |
1118 | { | |
1119 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1120 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1121 | target, &name, &version, only_if_ref, &oldsym | |
1122 | SELECT_SIZE_ENDIAN(size, true)); | |
1123 | #else | |
1124 | gold_unreachable(); | |
1125 | #endif | |
1126 | } | |
ead1e424 | 1127 | else |
9025d29d ILT |
1128 | { |
1129 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1130 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1131 | target, &name, &version, only_if_ref, &oldsym | |
1132 | SELECT_SIZE_ENDIAN(size, false)); | |
1133 | #else | |
1134 | gold_unreachable(); | |
1135 | #endif | |
1136 | } | |
ead1e424 ILT |
1137 | |
1138 | if (sym == NULL) | |
14b31740 | 1139 | return NULL; |
ead1e424 | 1140 | |
d4f5281b | 1141 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1142 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, |
1143 | offset_base); | |
14b31740 | 1144 | |
86f2e683 ILT |
1145 | if (oldsym != NULL |
1146 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1147 | this->override_with_special(oldsym, sym); |
86f2e683 | 1148 | |
14b31740 | 1149 | return sym; |
ead1e424 ILT |
1150 | } |
1151 | ||
1152 | // Define a special symbol with a constant value. It is a multiple | |
1153 | // definition error if this symbol is already defined. | |
1154 | ||
14b31740 ILT |
1155 | Symbol* |
1156 | Symbol_table::define_as_constant(const Target* target, const char* name, | |
1157 | const char* version, uint64_t value, | |
1158 | uint64_t symsize, elfcpp::STT type, | |
1159 | elfcpp::STB binding, elfcpp::STV visibility, | |
1160 | unsigned char nonvis, bool only_if_ref) | |
ead1e424 | 1161 | { |
9025d29d | 1162 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1163 | { |
1164 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1165 | return this->do_define_as_constant<32>(target, name, version, value, | |
1166 | symsize, type, binding, | |
1167 | visibility, nonvis, only_if_ref); | |
1168 | #else | |
1169 | gold_unreachable(); | |
1170 | #endif | |
1171 | } | |
9025d29d | 1172 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1173 | { |
1174 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1175 | return this->do_define_as_constant<64>(target, name, version, value, | |
1176 | symsize, type, binding, | |
1177 | visibility, nonvis, only_if_ref); | |
1178 | #else | |
1179 | gold_unreachable(); | |
1180 | #endif | |
1181 | } | |
ead1e424 | 1182 | else |
a3ad94ed | 1183 | gold_unreachable(); |
ead1e424 ILT |
1184 | } |
1185 | ||
1186 | // Define a symbol as a constant, sized version. | |
1187 | ||
1188 | template<int size> | |
14b31740 | 1189 | Sized_symbol<size>* |
ead1e424 | 1190 | Symbol_table::do_define_as_constant( |
14b31740 | 1191 | const Target* target, |
ead1e424 | 1192 | const char* name, |
14b31740 | 1193 | const char* version, |
ead1e424 ILT |
1194 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1195 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1196 | elfcpp::STT type, | |
1197 | elfcpp::STB binding, | |
1198 | elfcpp::STV visibility, | |
1199 | unsigned char nonvis, | |
1200 | bool only_if_ref) | |
1201 | { | |
1202 | Sized_symbol<size>* sym; | |
86f2e683 | 1203 | Sized_symbol<size>* oldsym; |
ead1e424 | 1204 | |
9025d29d ILT |
1205 | if (parameters->is_big_endian()) |
1206 | { | |
1207 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1208 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1209 | target, &name, &version, only_if_ref, &oldsym | |
1210 | SELECT_SIZE_ENDIAN(size, true)); | |
1211 | #else | |
1212 | gold_unreachable(); | |
1213 | #endif | |
1214 | } | |
ead1e424 | 1215 | else |
9025d29d ILT |
1216 | { |
1217 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1218 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1219 | target, &name, &version, only_if_ref, &oldsym | |
1220 | SELECT_SIZE_ENDIAN(size, false)); | |
1221 | #else | |
1222 | gold_unreachable(); | |
1223 | #endif | |
1224 | } | |
ead1e424 ILT |
1225 | |
1226 | if (sym == NULL) | |
14b31740 | 1227 | return NULL; |
ead1e424 | 1228 | |
d4f5281b | 1229 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 | 1230 | sym->init(name, value, symsize, type, binding, visibility, nonvis); |
14b31740 | 1231 | |
86f2e683 ILT |
1232 | if (oldsym != NULL |
1233 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1234 | this->override_with_special(oldsym, sym); |
86f2e683 | 1235 | |
14b31740 | 1236 | return sym; |
ead1e424 ILT |
1237 | } |
1238 | ||
1239 | // Define a set of symbols in output sections. | |
1240 | ||
1241 | void | |
14b31740 ILT |
1242 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1243 | int count, const Define_symbol_in_section* p) | |
ead1e424 ILT |
1244 | { |
1245 | for (int i = 0; i < count; ++i, ++p) | |
1246 | { | |
1247 | Output_section* os = layout->find_output_section(p->output_section); | |
1248 | if (os != NULL) | |
14b31740 ILT |
1249 | this->define_in_output_data(target, p->name, NULL, os, p->value, |
1250 | p->size, p->type, p->binding, | |
1251 | p->visibility, p->nonvis, | |
1252 | p->offset_is_from_end, p->only_if_ref); | |
ead1e424 | 1253 | else |
14b31740 | 1254 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1255 | p->binding, p->visibility, p->nonvis, |
1256 | p->only_if_ref); | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | // Define a set of symbols in output segments. | |
1261 | ||
1262 | void | |
14b31740 ILT |
1263 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1264 | int count, const Define_symbol_in_segment* p) | |
ead1e424 ILT |
1265 | { |
1266 | for (int i = 0; i < count; ++i, ++p) | |
1267 | { | |
1268 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
1269 | p->segment_flags_set, | |
1270 | p->segment_flags_clear); | |
1271 | if (os != NULL) | |
14b31740 ILT |
1272 | this->define_in_output_segment(target, p->name, NULL, os, p->value, |
1273 | p->size, p->type, p->binding, | |
1274 | p->visibility, p->nonvis, | |
1275 | p->offset_base, p->only_if_ref); | |
ead1e424 | 1276 | else |
14b31740 | 1277 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1278 | p->binding, p->visibility, p->nonvis, |
1279 | p->only_if_ref); | |
1280 | } | |
1281 | } | |
1282 | ||
46fe1623 ILT |
1283 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
1284 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
1285 | // the offset within POSD. | |
1286 | ||
1287 | template<int size> | |
1288 | void | |
1289 | Symbol_table::define_with_copy_reloc(const Target* target, | |
1290 | Sized_symbol<size>* csym, | |
1291 | Output_data* posd, uint64_t value) | |
1292 | { | |
1293 | gold_assert(csym->is_from_dynobj()); | |
1294 | gold_assert(!csym->is_copied_from_dynobj()); | |
1295 | Object* object = csym->object(); | |
1296 | gold_assert(object->is_dynamic()); | |
1297 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
1298 | ||
1299 | // Our copied variable has to override any variable in a shared | |
1300 | // library. | |
1301 | elfcpp::STB binding = csym->binding(); | |
1302 | if (binding == elfcpp::STB_WEAK) | |
1303 | binding = elfcpp::STB_GLOBAL; | |
1304 | ||
1305 | this->define_in_output_data(target, csym->name(), csym->version(), | |
1306 | posd, value, csym->symsize(), | |
1307 | csym->type(), binding, | |
1308 | csym->visibility(), csym->nonvis(), | |
1309 | false, false); | |
1310 | ||
1311 | csym->set_is_copied_from_dynobj(); | |
1312 | csym->set_needs_dynsym_entry(); | |
1313 | ||
1314 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
1315 | ||
1316 | // We have now defined all aliases, but we have not entered them all | |
1317 | // in the copied_symbol_dynobjs_ map. | |
1318 | if (csym->has_alias()) | |
1319 | { | |
1320 | Symbol* sym = csym; | |
1321 | while (true) | |
1322 | { | |
1323 | sym = this->weak_aliases_[sym]; | |
1324 | if (sym == csym) | |
1325 | break; | |
1326 | gold_assert(sym->output_data() == posd); | |
1327 | ||
1328 | sym->set_is_copied_from_dynobj(); | |
1329 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
1330 | } | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
1335 | // the original definition was found. | |
1336 | ||
1337 | Dynobj* | |
1338 | Symbol_table::get_copy_source(const Symbol* sym) const | |
1339 | { | |
1340 | gold_assert(sym->is_copied_from_dynobj()); | |
1341 | Copied_symbol_dynobjs::const_iterator p = | |
1342 | this->copied_symbol_dynobjs_.find(sym); | |
1343 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
1344 | return p->second; | |
1345 | } | |
1346 | ||
a3ad94ed ILT |
1347 | // Set the dynamic symbol indexes. INDEX is the index of the first |
1348 | // global dynamic symbol. Pointers to the symbols are stored into the | |
1349 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
1350 | // updated dynamic symbol index. | |
1351 | ||
1352 | unsigned int | |
35cdfc9a | 1353 | Symbol_table::set_dynsym_indexes(const Target* target, |
14b31740 | 1354 | unsigned int index, |
a3ad94ed | 1355 | std::vector<Symbol*>* syms, |
14b31740 ILT |
1356 | Stringpool* dynpool, |
1357 | Versions* versions) | |
a3ad94ed ILT |
1358 | { |
1359 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
1360 | p != this->table_.end(); | |
1361 | ++p) | |
1362 | { | |
1363 | Symbol* sym = p->second; | |
16649710 ILT |
1364 | |
1365 | // Note that SYM may already have a dynamic symbol index, since | |
1366 | // some symbols appear more than once in the symbol table, with | |
1367 | // and without a version. | |
1368 | ||
436ca963 | 1369 | if (!sym->should_add_dynsym_entry()) |
16649710 ILT |
1370 | sym->set_dynsym_index(-1U); |
1371 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
1372 | { |
1373 | sym->set_dynsym_index(index); | |
1374 | ++index; | |
1375 | syms->push_back(sym); | |
cfd73a4e | 1376 | dynpool->add(sym->name(), false, NULL); |
14b31740 ILT |
1377 | |
1378 | // Record any version information. | |
1379 | if (sym->version() != NULL) | |
35cdfc9a | 1380 | versions->record_version(this, dynpool, sym); |
a3ad94ed ILT |
1381 | } |
1382 | } | |
1383 | ||
14b31740 ILT |
1384 | // Finish up the versions. In some cases this may add new dynamic |
1385 | // symbols. | |
1386 | index = versions->finalize(target, this, index, syms); | |
1387 | ||
a3ad94ed ILT |
1388 | return index; |
1389 | } | |
1390 | ||
c06b7b0b ILT |
1391 | // Set the final values for all the symbols. The index of the first |
1392 | // global symbol in the output file is INDEX. Record the file offset | |
75f65a3e | 1393 | // OFF. Add their names to POOL. Return the new file offset. |
54dc6425 | 1394 | |
75f65a3e | 1395 | off_t |
17a1d0a9 ILT |
1396 | Symbol_table::finalize(const Task* task, unsigned int index, off_t off, |
1397 | off_t dynoff, size_t dyn_global_index, size_t dyncount, | |
16649710 | 1398 | Stringpool* pool) |
54dc6425 | 1399 | { |
f6ce93d6 ILT |
1400 | off_t ret; |
1401 | ||
a3ad94ed | 1402 | gold_assert(index != 0); |
c06b7b0b ILT |
1403 | this->first_global_index_ = index; |
1404 | ||
16649710 ILT |
1405 | this->dynamic_offset_ = dynoff; |
1406 | this->first_dynamic_global_index_ = dyn_global_index; | |
1407 | this->dynamic_count_ = dyncount; | |
1408 | ||
9025d29d ILT |
1409 | if (parameters->get_size() == 32) |
1410 | { | |
1411 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
1412 | ret = this->sized_finalize<32>(index, off, pool); | |
1413 | #else | |
1414 | gold_unreachable(); | |
1415 | #endif | |
1416 | } | |
1417 | else if (parameters->get_size() == 64) | |
1418 | { | |
1419 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
1420 | ret = this->sized_finalize<64>(index, off, pool); | |
1421 | #else | |
1422 | gold_unreachable(); | |
1423 | #endif | |
1424 | } | |
61ba1cf9 | 1425 | else |
a3ad94ed | 1426 | gold_unreachable(); |
f6ce93d6 ILT |
1427 | |
1428 | // Now that we have the final symbol table, we can reliably note | |
1429 | // which symbols should get warnings. | |
17a1d0a9 | 1430 | this->warnings_.note_warnings(this, task); |
f6ce93d6 ILT |
1431 | |
1432 | return ret; | |
75f65a3e ILT |
1433 | } |
1434 | ||
ead1e424 ILT |
1435 | // Set the final value for all the symbols. This is called after |
1436 | // Layout::finalize, so all the output sections have their final | |
1437 | // address. | |
75f65a3e ILT |
1438 | |
1439 | template<int size> | |
1440 | off_t | |
c06b7b0b | 1441 | Symbol_table::sized_finalize(unsigned index, off_t off, Stringpool* pool) |
75f65a3e | 1442 | { |
ead1e424 | 1443 | off = align_address(off, size >> 3); |
75f65a3e ILT |
1444 | this->offset_ = off; |
1445 | ||
c06b7b0b ILT |
1446 | size_t orig_index = index; |
1447 | ||
75f65a3e | 1448 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1449 | for (Symbol_table_type::iterator p = this->table_.begin(); |
1450 | p != this->table_.end(); | |
1451 | ++p) | |
54dc6425 | 1452 | { |
75f65a3e | 1453 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 1454 | |
75f65a3e | 1455 | // FIXME: Here we need to decide which symbols should go into |
a3ad94ed ILT |
1456 | // the output file, based on --strip. |
1457 | ||
1458 | // The default version of a symbol may appear twice in the | |
1459 | // symbol table. We only need to finalize it once. | |
1460 | if (sym->has_symtab_index()) | |
1461 | continue; | |
75f65a3e | 1462 | |
008db82e ILT |
1463 | if (!sym->in_reg()) |
1464 | { | |
1465 | gold_assert(!sym->has_symtab_index()); | |
1466 | sym->set_symtab_index(-1U); | |
1467 | gold_assert(sym->dynsym_index() == -1U); | |
1468 | continue; | |
1469 | } | |
1470 | ||
ead1e424 | 1471 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 1472 | |
ead1e424 | 1473 | switch (sym->source()) |
75f65a3e | 1474 | { |
ead1e424 ILT |
1475 | case Symbol::FROM_OBJECT: |
1476 | { | |
16649710 | 1477 | unsigned int shndx = sym->shndx(); |
ead1e424 ILT |
1478 | |
1479 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1480 | if (shndx >= elfcpp::SHN_LORESERVE |
1481 | && shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1482 | { |
75f2446e | 1483 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1484 | sym->demangled_name().c_str(), shndx); |
75f2446e | 1485 | shndx = elfcpp::SHN_UNDEF; |
ead1e424 ILT |
1486 | } |
1487 | ||
f6ce93d6 ILT |
1488 | Object* symobj = sym->object(); |
1489 | if (symobj->is_dynamic()) | |
1490 | { | |
1491 | value = 0; | |
16649710 | 1492 | shndx = elfcpp::SHN_UNDEF; |
f6ce93d6 | 1493 | } |
16649710 | 1494 | else if (shndx == elfcpp::SHN_UNDEF) |
ead1e424 | 1495 | value = 0; |
16649710 | 1496 | else if (shndx == elfcpp::SHN_ABS) |
ead1e424 ILT |
1497 | value = sym->value(); |
1498 | else | |
1499 | { | |
f6ce93d6 | 1500 | Relobj* relobj = static_cast<Relobj*>(symobj); |
8383303e | 1501 | section_offset_type secoff; |
16649710 | 1502 | Output_section* os = relobj->output_section(shndx, &secoff); |
ead1e424 ILT |
1503 | |
1504 | if (os == NULL) | |
1505 | { | |
c06b7b0b | 1506 | sym->set_symtab_index(-1U); |
16649710 | 1507 | gold_assert(sym->dynsym_index() == -1U); |
ead1e424 ILT |
1508 | continue; |
1509 | } | |
1510 | ||
7bf1f802 ILT |
1511 | if (sym->type() == elfcpp::STT_TLS) |
1512 | value = sym->value() + os->tls_offset() + secoff; | |
1513 | else | |
1514 | value = sym->value() + os->address() + secoff; | |
ead1e424 ILT |
1515 | } |
1516 | } | |
1517 | break; | |
1518 | ||
1519 | case Symbol::IN_OUTPUT_DATA: | |
1520 | { | |
1521 | Output_data* od = sym->output_data(); | |
1522 | value = sym->value() + od->address(); | |
1523 | if (sym->offset_is_from_end()) | |
1524 | value += od->data_size(); | |
1525 | } | |
1526 | break; | |
1527 | ||
1528 | case Symbol::IN_OUTPUT_SEGMENT: | |
1529 | { | |
1530 | Output_segment* os = sym->output_segment(); | |
1531 | value = sym->value() + os->vaddr(); | |
1532 | switch (sym->offset_base()) | |
1533 | { | |
1534 | case Symbol::SEGMENT_START: | |
1535 | break; | |
1536 | case Symbol::SEGMENT_END: | |
1537 | value += os->memsz(); | |
1538 | break; | |
1539 | case Symbol::SEGMENT_BSS: | |
1540 | value += os->filesz(); | |
1541 | break; | |
1542 | default: | |
a3ad94ed | 1543 | gold_unreachable(); |
ead1e424 ILT |
1544 | } |
1545 | } | |
1546 | break; | |
1547 | ||
1548 | case Symbol::CONSTANT: | |
1549 | value = sym->value(); | |
1550 | break; | |
1551 | ||
1552 | default: | |
a3ad94ed | 1553 | gold_unreachable(); |
54dc6425 | 1554 | } |
ead1e424 ILT |
1555 | |
1556 | sym->set_value(value); | |
9e2dcb77 ILT |
1557 | |
1558 | if (parameters->strip_all()) | |
1559 | sym->set_symtab_index(-1U); | |
1560 | else | |
1561 | { | |
1562 | sym->set_symtab_index(index); | |
cfd73a4e | 1563 | pool->add(sym->name(), false, NULL); |
9e2dcb77 ILT |
1564 | ++index; |
1565 | off += sym_size; | |
1566 | } | |
54dc6425 | 1567 | } |
75f65a3e | 1568 | |
c06b7b0b | 1569 | this->output_count_ = index - orig_index; |
61ba1cf9 | 1570 | |
75f65a3e | 1571 | return off; |
54dc6425 ILT |
1572 | } |
1573 | ||
61ba1cf9 ILT |
1574 | // Write out the global symbols. |
1575 | ||
1576 | void | |
9a2d6984 ILT |
1577 | Symbol_table::write_globals(const Input_objects* input_objects, |
1578 | const Stringpool* sympool, | |
16649710 | 1579 | const Stringpool* dynpool, Output_file* of) const |
61ba1cf9 | 1580 | { |
9025d29d | 1581 | if (parameters->get_size() == 32) |
61ba1cf9 | 1582 | { |
9025d29d ILT |
1583 | if (parameters->is_big_endian()) |
1584 | { | |
1585 | #ifdef HAVE_TARGET_32_BIG | |
9a2d6984 ILT |
1586 | this->sized_write_globals<32, true>(input_objects, sympool, |
1587 | dynpool, of); | |
9025d29d ILT |
1588 | #else |
1589 | gold_unreachable(); | |
1590 | #endif | |
1591 | } | |
61ba1cf9 | 1592 | else |
9025d29d ILT |
1593 | { |
1594 | #ifdef HAVE_TARGET_32_LITTLE | |
9a2d6984 ILT |
1595 | this->sized_write_globals<32, false>(input_objects, sympool, |
1596 | dynpool, of); | |
9025d29d ILT |
1597 | #else |
1598 | gold_unreachable(); | |
1599 | #endif | |
1600 | } | |
61ba1cf9 | 1601 | } |
9025d29d | 1602 | else if (parameters->get_size() == 64) |
61ba1cf9 | 1603 | { |
9025d29d ILT |
1604 | if (parameters->is_big_endian()) |
1605 | { | |
1606 | #ifdef HAVE_TARGET_64_BIG | |
9a2d6984 ILT |
1607 | this->sized_write_globals<64, true>(input_objects, sympool, |
1608 | dynpool, of); | |
9025d29d ILT |
1609 | #else |
1610 | gold_unreachable(); | |
1611 | #endif | |
1612 | } | |
61ba1cf9 | 1613 | else |
9025d29d ILT |
1614 | { |
1615 | #ifdef HAVE_TARGET_64_LITTLE | |
9a2d6984 ILT |
1616 | this->sized_write_globals<64, false>(input_objects, sympool, |
1617 | dynpool, of); | |
9025d29d ILT |
1618 | #else |
1619 | gold_unreachable(); | |
1620 | #endif | |
1621 | } | |
61ba1cf9 ILT |
1622 | } |
1623 | else | |
a3ad94ed | 1624 | gold_unreachable(); |
61ba1cf9 ILT |
1625 | } |
1626 | ||
1627 | // Write out the global symbols. | |
1628 | ||
1629 | template<int size, bool big_endian> | |
1630 | void | |
9a2d6984 | 1631 | Symbol_table::sized_write_globals(const Input_objects* input_objects, |
61ba1cf9 | 1632 | const Stringpool* sympool, |
16649710 | 1633 | const Stringpool* dynpool, |
61ba1cf9 ILT |
1634 | Output_file* of) const |
1635 | { | |
9a2d6984 ILT |
1636 | const Target* const target = input_objects->target(); |
1637 | ||
61ba1cf9 | 1638 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1639 | unsigned int index = this->first_global_index_; |
1640 | const off_t oview_size = this->output_count_ * sym_size; | |
16649710 ILT |
1641 | unsigned char* const psyms = of->get_output_view(this->offset_, oview_size); |
1642 | ||
1643 | unsigned int dynamic_count = this->dynamic_count_; | |
1644 | off_t dynamic_size = dynamic_count * sym_size; | |
1645 | unsigned int first_dynamic_global_index = this->first_dynamic_global_index_; | |
1646 | unsigned char* dynamic_view; | |
1647 | if (this->dynamic_offset_ == 0) | |
1648 | dynamic_view = NULL; | |
1649 | else | |
1650 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 1651 | |
61ba1cf9 ILT |
1652 | unsigned char* ps = psyms; |
1653 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1654 | p != this->table_.end(); | |
1655 | ++p) | |
1656 | { | |
1657 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1658 | ||
9a2d6984 ILT |
1659 | // Possibly warn about unresolved symbols in shared libraries. |
1660 | this->warn_about_undefined_dynobj_symbol(input_objects, sym); | |
e2827e5f | 1661 | |
a3ad94ed | 1662 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
1663 | unsigned int dynsym_index; |
1664 | if (dynamic_view == NULL) | |
1665 | dynsym_index = -1U; | |
1666 | else | |
1667 | dynsym_index = sym->dynsym_index(); | |
1668 | ||
1669 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
1670 | { |
1671 | // This symbol is not included in the output file. | |
1672 | continue; | |
1673 | } | |
16649710 ILT |
1674 | |
1675 | if (sym_index == index) | |
1676 | ++index; | |
1677 | else if (sym_index != -1U) | |
a3ad94ed ILT |
1678 | { |
1679 | // We have already seen this symbol, because it has a | |
1680 | // default version. | |
1681 | gold_assert(sym_index < index); | |
16649710 ILT |
1682 | if (dynsym_index == -1U) |
1683 | continue; | |
1684 | sym_index = -1U; | |
a3ad94ed | 1685 | } |
c06b7b0b | 1686 | |
ead1e424 | 1687 | unsigned int shndx; |
ab5c9e90 | 1688 | typename elfcpp::Elf_types<32>::Elf_Addr value = sym->value(); |
ead1e424 ILT |
1689 | switch (sym->source()) |
1690 | { | |
1691 | case Symbol::FROM_OBJECT: | |
1692 | { | |
16649710 | 1693 | unsigned int in_shndx = sym->shndx(); |
ead1e424 ILT |
1694 | |
1695 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1696 | if (in_shndx >= elfcpp::SHN_LORESERVE |
1697 | && in_shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1698 | { |
75f2446e | 1699 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1700 | sym->demangled_name().c_str(), in_shndx); |
75f2446e | 1701 | shndx = in_shndx; |
f6ce93d6 | 1702 | } |
ead1e424 ILT |
1703 | else |
1704 | { | |
75f2446e ILT |
1705 | Object* symobj = sym->object(); |
1706 | if (symobj->is_dynamic()) | |
1707 | { | |
1708 | if (sym->needs_dynsym_value()) | |
1709 | value = target->dynsym_value(sym); | |
1710 | shndx = elfcpp::SHN_UNDEF; | |
1711 | } | |
1712 | else if (in_shndx == elfcpp::SHN_UNDEF | |
1713 | || in_shndx == elfcpp::SHN_ABS) | |
1714 | shndx = in_shndx; | |
1715 | else | |
1716 | { | |
1717 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
8383303e | 1718 | section_offset_type secoff; |
75f2446e ILT |
1719 | Output_section* os = relobj->output_section(in_shndx, |
1720 | &secoff); | |
1721 | gold_assert(os != NULL); | |
1722 | shndx = os->out_shndx(); | |
1723 | } | |
ead1e424 ILT |
1724 | } |
1725 | } | |
1726 | break; | |
1727 | ||
1728 | case Symbol::IN_OUTPUT_DATA: | |
1729 | shndx = sym->output_data()->out_shndx(); | |
1730 | break; | |
1731 | ||
1732 | case Symbol::IN_OUTPUT_SEGMENT: | |
1733 | shndx = elfcpp::SHN_ABS; | |
1734 | break; | |
1735 | ||
1736 | case Symbol::CONSTANT: | |
1737 | shndx = elfcpp::SHN_ABS; | |
1738 | break; | |
1739 | ||
1740 | default: | |
a3ad94ed | 1741 | gold_unreachable(); |
ead1e424 | 1742 | } |
61ba1cf9 | 1743 | |
16649710 ILT |
1744 | if (sym_index != -1U) |
1745 | { | |
6a469986 | 1746 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1747 | sym, sym->value(), shndx, sympool, ps |
6a469986 | 1748 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 ILT |
1749 | ps += sym_size; |
1750 | } | |
61ba1cf9 | 1751 | |
16649710 ILT |
1752 | if (dynsym_index != -1U) |
1753 | { | |
1754 | dynsym_index -= first_dynamic_global_index; | |
1755 | gold_assert(dynsym_index < dynamic_count); | |
1756 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
6a469986 | 1757 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1758 | sym, value, shndx, dynpool, pd |
6a469986 | 1759 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 | 1760 | } |
61ba1cf9 ILT |
1761 | } |
1762 | ||
a3ad94ed | 1763 | gold_assert(ps - psyms == oview_size); |
c06b7b0b ILT |
1764 | |
1765 | of->write_output_view(this->offset_, oview_size, psyms); | |
16649710 ILT |
1766 | if (dynamic_view != NULL) |
1767 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
1768 | } | |
1769 | ||
1770 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
1771 | // strtab holding the name. | |
1772 | ||
1773 | template<int size, bool big_endian> | |
1774 | void | |
ab5c9e90 ILT |
1775 | Symbol_table::sized_write_symbol( |
1776 | Sized_symbol<size>* sym, | |
1777 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1778 | unsigned int shndx, | |
1779 | const Stringpool* pool, | |
1780 | unsigned char* p | |
1781 | ACCEPT_SIZE_ENDIAN) const | |
16649710 ILT |
1782 | { |
1783 | elfcpp::Sym_write<size, big_endian> osym(p); | |
1784 | osym.put_st_name(pool->get_offset(sym->name())); | |
ab5c9e90 | 1785 | osym.put_st_value(value); |
16649710 ILT |
1786 | osym.put_st_size(sym->symsize()); |
1787 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
1788 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); | |
1789 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1790 | } |
1791 | ||
9a2d6984 ILT |
1792 | // Check for unresolved symbols in shared libraries. This is |
1793 | // controlled by the --allow-shlib-undefined option. | |
1794 | ||
1795 | // We only warn about libraries for which we have seen all the | |
1796 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
1797 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
1798 | // entry, we aren't going to be able to reliably report whether the | |
1799 | // symbol is undefined. | |
1800 | ||
1801 | // We also don't warn about libraries found in the system library | |
1802 | // directory (the directory were we find libc.so); we assume that | |
1803 | // those libraries are OK. This heuristic avoids problems in | |
1804 | // GNU/Linux, in which -ldl can have undefined references satisfied by | |
1805 | // ld-linux.so. | |
1806 | ||
1807 | inline void | |
1808 | Symbol_table::warn_about_undefined_dynobj_symbol( | |
1809 | const Input_objects* input_objects, | |
1810 | Symbol* sym) const | |
1811 | { | |
1812 | if (sym->source() == Symbol::FROM_OBJECT | |
1813 | && sym->object()->is_dynamic() | |
1814 | && sym->shndx() == elfcpp::SHN_UNDEF | |
1815 | && sym->binding() != elfcpp::STB_WEAK | |
1816 | && !parameters->allow_shlib_undefined() | |
1817 | && !input_objects->target()->is_defined_by_abi(sym) | |
1818 | && !input_objects->found_in_system_library_directory(sym->object())) | |
1819 | { | |
1820 | // A very ugly cast. | |
1821 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
1822 | if (!dynobj->has_unknown_needed_entries()) | |
1823 | gold_error(_("%s: undefined reference to '%s'"), | |
a2b1aa12 ILT |
1824 | sym->object()->name().c_str(), |
1825 | sym->demangled_name().c_str()); | |
9a2d6984 ILT |
1826 | } |
1827 | } | |
1828 | ||
a3ad94ed ILT |
1829 | // Write out a section symbol. Return the update offset. |
1830 | ||
1831 | void | |
9025d29d | 1832 | Symbol_table::write_section_symbol(const Output_section *os, |
a3ad94ed ILT |
1833 | Output_file* of, |
1834 | off_t offset) const | |
1835 | { | |
9025d29d | 1836 | if (parameters->get_size() == 32) |
a3ad94ed | 1837 | { |
9025d29d ILT |
1838 | if (parameters->is_big_endian()) |
1839 | { | |
1840 | #ifdef HAVE_TARGET_32_BIG | |
1841 | this->sized_write_section_symbol<32, true>(os, of, offset); | |
1842 | #else | |
1843 | gold_unreachable(); | |
1844 | #endif | |
1845 | } | |
a3ad94ed | 1846 | else |
9025d29d ILT |
1847 | { |
1848 | #ifdef HAVE_TARGET_32_LITTLE | |
1849 | this->sized_write_section_symbol<32, false>(os, of, offset); | |
1850 | #else | |
1851 | gold_unreachable(); | |
1852 | #endif | |
1853 | } | |
a3ad94ed | 1854 | } |
9025d29d | 1855 | else if (parameters->get_size() == 64) |
a3ad94ed | 1856 | { |
9025d29d ILT |
1857 | if (parameters->is_big_endian()) |
1858 | { | |
1859 | #ifdef HAVE_TARGET_64_BIG | |
1860 | this->sized_write_section_symbol<64, true>(os, of, offset); | |
1861 | #else | |
1862 | gold_unreachable(); | |
1863 | #endif | |
1864 | } | |
a3ad94ed | 1865 | else |
9025d29d ILT |
1866 | { |
1867 | #ifdef HAVE_TARGET_64_LITTLE | |
1868 | this->sized_write_section_symbol<64, false>(os, of, offset); | |
1869 | #else | |
1870 | gold_unreachable(); | |
1871 | #endif | |
1872 | } | |
a3ad94ed ILT |
1873 | } |
1874 | else | |
1875 | gold_unreachable(); | |
1876 | } | |
1877 | ||
1878 | // Write out a section symbol, specialized for size and endianness. | |
1879 | ||
1880 | template<int size, bool big_endian> | |
1881 | void | |
1882 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
1883 | Output_file* of, | |
1884 | off_t offset) const | |
1885 | { | |
1886 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1887 | ||
1888 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
1889 | ||
1890 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
1891 | osym.put_st_name(0); | |
1892 | osym.put_st_value(os->address()); | |
1893 | osym.put_st_size(0); | |
1894 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
1895 | elfcpp::STT_SECTION)); | |
1896 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
1897 | osym.put_st_shndx(os->out_shndx()); | |
1898 | ||
1899 | of->write_output_view(offset, sym_size, pov); | |
1900 | } | |
1901 | ||
abaa3995 ILT |
1902 | // Print statistical information to stderr. This is used for --stats. |
1903 | ||
1904 | void | |
1905 | Symbol_table::print_stats() const | |
1906 | { | |
1907 | #if defined(HAVE_TR1_UNORDERED_MAP) || defined(HAVE_EXT_HASH_MAP) | |
1908 | fprintf(stderr, _("%s: symbol table entries: %zu; buckets: %zu\n"), | |
1909 | program_name, this->table_.size(), this->table_.bucket_count()); | |
1910 | #else | |
1911 | fprintf(stderr, _("%s: symbol table entries: %zu\n"), | |
1912 | program_name, this->table_.size()); | |
1913 | #endif | |
ad8f37d1 | 1914 | this->namepool_.print_stats("symbol table stringpool"); |
abaa3995 ILT |
1915 | } |
1916 | ||
ff541f30 ILT |
1917 | // We check for ODR violations by looking for symbols with the same |
1918 | // name for which the debugging information reports that they were | |
1919 | // defined in different source locations. When comparing the source | |
1920 | // location, we consider instances with the same base filename and | |
1921 | // line number to be the same. This is because different object | |
1922 | // files/shared libraries can include the same header file using | |
1923 | // different paths, and we don't want to report an ODR violation in | |
1924 | // that case. | |
1925 | ||
1926 | // This struct is used to compare line information, as returned by | |
7bf1f802 | 1927 | // Dwarf_line_info::one_addr2line. It implements a < comparison |
ff541f30 ILT |
1928 | // operator used with std::set. |
1929 | ||
1930 | struct Odr_violation_compare | |
1931 | { | |
1932 | bool | |
1933 | operator()(const std::string& s1, const std::string& s2) const | |
1934 | { | |
1935 | std::string::size_type pos1 = s1.rfind('/'); | |
1936 | std::string::size_type pos2 = s2.rfind('/'); | |
1937 | if (pos1 == std::string::npos | |
1938 | || pos2 == std::string::npos) | |
1939 | return s1 < s2; | |
1940 | return s1.compare(pos1, std::string::npos, | |
1941 | s2, pos2, std::string::npos) < 0; | |
1942 | } | |
1943 | }; | |
1944 | ||
70e654ba ILT |
1945 | // Check candidate_odr_violations_ to find symbols with the same name |
1946 | // but apparently different definitions (different source-file/line-no). | |
1947 | ||
1948 | void | |
17a1d0a9 ILT |
1949 | Symbol_table::detect_odr_violations(const Task* task, |
1950 | const char* output_file_name) const | |
70e654ba ILT |
1951 | { |
1952 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
1953 | it != candidate_odr_violations_.end(); | |
1954 | ++it) | |
1955 | { | |
1956 | const char* symbol_name = it->first; | |
1957 | // We use a sorted set so the output is deterministic. | |
ff541f30 | 1958 | std::set<std::string, Odr_violation_compare> line_nums; |
70e654ba | 1959 | |
b01c0a4a ILT |
1960 | for (Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator |
1961 | locs = it->second.begin(); | |
1962 | locs != it->second.end(); | |
1963 | ++locs) | |
70e654ba ILT |
1964 | { |
1965 | // We need to lock the object in order to read it. This | |
17a1d0a9 ILT |
1966 | // means that we have to run in a singleton Task. If we |
1967 | // want to run this in a general Task for better | |
1968 | // performance, we will need one Task for object, plus | |
1969 | // appropriate locking to ensure that we don't conflict with | |
1970 | // other uses of the object. | |
1971 | Task_lock_obj<Object> tl(task, locs->object); | |
a55ce7fe ILT |
1972 | std::string lineno = Dwarf_line_info::one_addr2line( |
1973 | locs->object, locs->shndx, locs->offset); | |
70e654ba ILT |
1974 | if (!lineno.empty()) |
1975 | line_nums.insert(lineno); | |
1976 | } | |
1977 | ||
1978 | if (line_nums.size() > 1) | |
1979 | { | |
dd8670e5 | 1980 | gold_warning(_("while linking %s: symbol '%s' defined in multiple " |
78f15696 | 1981 | "places (possible ODR violation):"), |
a2b1aa12 | 1982 | output_file_name, demangle(symbol_name).c_str()); |
70e654ba ILT |
1983 | for (std::set<std::string>::const_iterator it2 = line_nums.begin(); |
1984 | it2 != line_nums.end(); | |
1985 | ++it2) | |
1986 | fprintf(stderr, " %s\n", it2->c_str()); | |
1987 | } | |
1988 | } | |
1989 | } | |
1990 | ||
f6ce93d6 ILT |
1991 | // Warnings functions. |
1992 | ||
1993 | // Add a new warning. | |
1994 | ||
1995 | void | |
1996 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
1997 | unsigned int shndx) | |
1998 | { | |
1999 | name = symtab->canonicalize_name(name); | |
2000 | this->warnings_[name].set(obj, shndx); | |
2001 | } | |
2002 | ||
2003 | // Look through the warnings and mark the symbols for which we should | |
2004 | // warn. This is called during Layout::finalize when we know the | |
2005 | // sources for all the symbols. | |
2006 | ||
2007 | void | |
17a1d0a9 | 2008 | Warnings::note_warnings(Symbol_table* symtab, const Task* task) |
f6ce93d6 ILT |
2009 | { |
2010 | for (Warning_table::iterator p = this->warnings_.begin(); | |
2011 | p != this->warnings_.end(); | |
2012 | ++p) | |
2013 | { | |
2014 | Symbol* sym = symtab->lookup(p->first, NULL); | |
2015 | if (sym != NULL | |
2016 | && sym->source() == Symbol::FROM_OBJECT | |
2017 | && sym->object() == p->second.object) | |
2018 | { | |
2019 | sym->set_has_warning(); | |
2020 | ||
2021 | // Read the section contents to get the warning text. It | |
2022 | // would be nicer if we only did this if we have to actually | |
2023 | // issue a warning. Unfortunately, warnings are issued as | |
2024 | // we relocate sections. That means that we can not lock | |
2025 | // the object then, as we might try to issue the same | |
2026 | // warning multiple times simultaneously. | |
645f8123 | 2027 | { |
17a1d0a9 | 2028 | Task_lock_obj<Object> tl(task, p->second.object); |
645f8123 | 2029 | const unsigned char* c; |
8383303e | 2030 | section_size_type len; |
9eb9fa57 ILT |
2031 | c = p->second.object->section_contents(p->second.shndx, &len, |
2032 | false); | |
645f8123 ILT |
2033 | p->second.set_text(reinterpret_cast<const char*>(c), len); |
2034 | } | |
f6ce93d6 ILT |
2035 | } |
2036 | } | |
2037 | } | |
2038 | ||
2039 | // Issue a warning. This is called when we see a relocation against a | |
2040 | // symbol for which has a warning. | |
2041 | ||
75f2446e | 2042 | template<int size, bool big_endian> |
f6ce93d6 | 2043 | void |
75f2446e ILT |
2044 | Warnings::issue_warning(const Symbol* sym, |
2045 | const Relocate_info<size, big_endian>* relinfo, | |
2046 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 2047 | { |
a3ad94ed | 2048 | gold_assert(sym->has_warning()); |
f6ce93d6 | 2049 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 2050 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
2051 | gold_warning_at_location(relinfo, relnum, reloffset, |
2052 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
2053 | } |
2054 | ||
14bfc3f5 ILT |
2055 | // Instantiate the templates we need. We could use the configure |
2056 | // script to restrict this to only the ones needed for implemented | |
2057 | // targets. | |
2058 | ||
c7912668 ILT |
2059 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2060 | template | |
2061 | void | |
2062 | Sized_symbol<32>::allocate_common(Output_data*, Value_type); | |
2063 | #endif | |
2064 | ||
2065 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2066 | template | |
2067 | void | |
2068 | Sized_symbol<64>::allocate_common(Output_data*, Value_type); | |
2069 | #endif | |
2070 | ||
193a53d9 | 2071 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
2072 | template |
2073 | void | |
193a53d9 ILT |
2074 | Symbol_table::add_from_relobj<32, false>( |
2075 | Sized_relobj<32, false>* relobj, | |
f6ce93d6 | 2076 | const unsigned char* syms, |
14bfc3f5 ILT |
2077 | size_t count, |
2078 | const char* sym_names, | |
2079 | size_t sym_name_size, | |
730cdc88 | 2080 | Sized_relobj<32, true>::Symbols* sympointers); |
193a53d9 | 2081 | #endif |
14bfc3f5 | 2082 | |
193a53d9 | 2083 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
2084 | template |
2085 | void | |
193a53d9 ILT |
2086 | Symbol_table::add_from_relobj<32, true>( |
2087 | Sized_relobj<32, true>* relobj, | |
f6ce93d6 | 2088 | const unsigned char* syms, |
14bfc3f5 ILT |
2089 | size_t count, |
2090 | const char* sym_names, | |
2091 | size_t sym_name_size, | |
730cdc88 | 2092 | Sized_relobj<32, false>::Symbols* sympointers); |
193a53d9 | 2093 | #endif |
14bfc3f5 | 2094 | |
193a53d9 | 2095 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
2096 | template |
2097 | void | |
193a53d9 ILT |
2098 | Symbol_table::add_from_relobj<64, false>( |
2099 | Sized_relobj<64, false>* relobj, | |
f6ce93d6 | 2100 | const unsigned char* syms, |
14bfc3f5 ILT |
2101 | size_t count, |
2102 | const char* sym_names, | |
2103 | size_t sym_name_size, | |
730cdc88 | 2104 | Sized_relobj<64, true>::Symbols* sympointers); |
193a53d9 | 2105 | #endif |
14bfc3f5 | 2106 | |
193a53d9 | 2107 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
2108 | template |
2109 | void | |
193a53d9 ILT |
2110 | Symbol_table::add_from_relobj<64, true>( |
2111 | Sized_relobj<64, true>* relobj, | |
f6ce93d6 | 2112 | const unsigned char* syms, |
14bfc3f5 ILT |
2113 | size_t count, |
2114 | const char* sym_names, | |
2115 | size_t sym_name_size, | |
730cdc88 | 2116 | Sized_relobj<64, false>::Symbols* sympointers); |
193a53d9 | 2117 | #endif |
14bfc3f5 | 2118 | |
193a53d9 | 2119 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
2120 | template |
2121 | void | |
193a53d9 ILT |
2122 | Symbol_table::add_from_dynobj<32, false>( |
2123 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
2124 | const unsigned char* syms, |
2125 | size_t count, | |
2126 | const char* sym_names, | |
2127 | size_t sym_name_size, | |
2128 | const unsigned char* versym, | |
2129 | size_t versym_size, | |
2130 | const std::vector<const char*>* version_map); | |
193a53d9 | 2131 | #endif |
dbe717ef | 2132 | |
193a53d9 | 2133 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
2134 | template |
2135 | void | |
193a53d9 ILT |
2136 | Symbol_table::add_from_dynobj<32, true>( |
2137 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
2138 | const unsigned char* syms, |
2139 | size_t count, | |
2140 | const char* sym_names, | |
2141 | size_t sym_name_size, | |
2142 | const unsigned char* versym, | |
2143 | size_t versym_size, | |
2144 | const std::vector<const char*>* version_map); | |
193a53d9 | 2145 | #endif |
dbe717ef | 2146 | |
193a53d9 | 2147 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
2148 | template |
2149 | void | |
193a53d9 ILT |
2150 | Symbol_table::add_from_dynobj<64, false>( |
2151 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
2152 | const unsigned char* syms, |
2153 | size_t count, | |
2154 | const char* sym_names, | |
2155 | size_t sym_name_size, | |
2156 | const unsigned char* versym, | |
2157 | size_t versym_size, | |
2158 | const std::vector<const char*>* version_map); | |
193a53d9 | 2159 | #endif |
dbe717ef | 2160 | |
193a53d9 | 2161 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
2162 | template |
2163 | void | |
193a53d9 ILT |
2164 | Symbol_table::add_from_dynobj<64, true>( |
2165 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
2166 | const unsigned char* syms, |
2167 | size_t count, | |
2168 | const char* sym_names, | |
2169 | size_t sym_name_size, | |
2170 | const unsigned char* versym, | |
2171 | size_t versym_size, | |
2172 | const std::vector<const char*>* version_map); | |
193a53d9 | 2173 | #endif |
dbe717ef | 2174 | |
46fe1623 ILT |
2175 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2176 | template | |
2177 | void | |
2178 | Symbol_table::define_with_copy_reloc<32>(const Target* target, | |
2179 | Sized_symbol<32>* sym, | |
2180 | Output_data* posd, uint64_t value); | |
2181 | #endif | |
2182 | ||
2183 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2184 | template | |
2185 | void | |
2186 | Symbol_table::define_with_copy_reloc<64>(const Target* target, | |
2187 | Sized_symbol<64>* sym, | |
2188 | Output_data* posd, uint64_t value); | |
2189 | #endif | |
2190 | ||
75f2446e ILT |
2191 | #ifdef HAVE_TARGET_32_LITTLE |
2192 | template | |
2193 | void | |
2194 | Warnings::issue_warning<32, false>(const Symbol* sym, | |
2195 | const Relocate_info<32, false>* relinfo, | |
2196 | size_t relnum, off_t reloffset) const; | |
2197 | #endif | |
2198 | ||
2199 | #ifdef HAVE_TARGET_32_BIG | |
2200 | template | |
2201 | void | |
2202 | Warnings::issue_warning<32, true>(const Symbol* sym, | |
2203 | const Relocate_info<32, true>* relinfo, | |
2204 | size_t relnum, off_t reloffset) const; | |
2205 | #endif | |
2206 | ||
2207 | #ifdef HAVE_TARGET_64_LITTLE | |
2208 | template | |
2209 | void | |
2210 | Warnings::issue_warning<64, false>(const Symbol* sym, | |
2211 | const Relocate_info<64, false>* relinfo, | |
2212 | size_t relnum, off_t reloffset) const; | |
2213 | #endif | |
2214 | ||
2215 | #ifdef HAVE_TARGET_64_BIG | |
2216 | template | |
2217 | void | |
2218 | Warnings::issue_warning<64, true>(const Symbol* sym, | |
2219 | const Relocate_info<64, true>* relinfo, | |
2220 | size_t relnum, off_t reloffset) const; | |
2221 | #endif | |
2222 | ||
14bfc3f5 | 2223 | } // End namespace gold. |