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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; |
d61c6bd4 | 73 | this->needs_value_in_got_ = false; |
ead1e424 ILT |
74 | } |
75 | ||
a2b1aa12 ILT |
76 | // Return the demangled version of the symbol's name, but only |
77 | // if the --demangle flag was set. | |
78 | ||
79 | static std::string | |
80 | demangle(const char* name) | |
81 | { | |
ff541f30 ILT |
82 | if (!parameters->demangle()) |
83 | return name; | |
84 | ||
a2b1aa12 ILT |
85 | // cplus_demangle allocates memory for the result it returns, |
86 | // and returns NULL if the name is already demangled. | |
87 | char* demangled_name = cplus_demangle(name, DMGL_ANSI | DMGL_PARAMS); | |
88 | if (demangled_name == NULL) | |
89 | return name; | |
90 | ||
91 | std::string retval(demangled_name); | |
92 | free(demangled_name); | |
93 | return retval; | |
94 | } | |
95 | ||
96 | std::string | |
97 | Symbol::demangled_name() const | |
98 | { | |
ff541f30 | 99 | return demangle(this->name()); |
a2b1aa12 ILT |
100 | } |
101 | ||
ead1e424 ILT |
102 | // Initialize the fields in the base class Symbol for SYM in OBJECT. |
103 | ||
104 | template<int size, bool big_endian> | |
105 | void | |
106 | Symbol::init_base(const char* name, const char* version, Object* object, | |
107 | const elfcpp::Sym<size, big_endian>& sym) | |
108 | { | |
109 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), | |
110 | sym.get_st_visibility(), sym.get_st_nonvis()); | |
111 | this->u_.from_object.object = object; | |
112 | // FIXME: Handle SHN_XINDEX. | |
16649710 | 113 | this->u_.from_object.shndx = sym.get_st_shndx(); |
ead1e424 | 114 | this->source_ = FROM_OBJECT; |
008db82e | 115 | this->in_reg_ = !object->is_dynamic(); |
1564db8d | 116 | this->in_dyn_ = object->is_dynamic(); |
14bfc3f5 ILT |
117 | } |
118 | ||
ead1e424 ILT |
119 | // Initialize the fields in the base class Symbol for a symbol defined |
120 | // in an Output_data. | |
121 | ||
122 | void | |
123 | Symbol::init_base(const char* name, Output_data* od, elfcpp::STT type, | |
124 | elfcpp::STB binding, elfcpp::STV visibility, | |
125 | unsigned char nonvis, bool offset_is_from_end) | |
126 | { | |
127 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
128 | this->u_.in_output_data.output_data = od; | |
129 | this->u_.in_output_data.offset_is_from_end = offset_is_from_end; | |
130 | this->source_ = IN_OUTPUT_DATA; | |
008db82e | 131 | this->in_reg_ = true; |
ead1e424 ILT |
132 | } |
133 | ||
134 | // Initialize the fields in the base class Symbol for a symbol defined | |
135 | // in an Output_segment. | |
136 | ||
137 | void | |
138 | Symbol::init_base(const char* name, Output_segment* os, elfcpp::STT type, | |
139 | elfcpp::STB binding, elfcpp::STV visibility, | |
140 | unsigned char nonvis, Segment_offset_base offset_base) | |
141 | { | |
142 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
143 | this->u_.in_output_segment.output_segment = os; | |
144 | this->u_.in_output_segment.offset_base = offset_base; | |
145 | this->source_ = IN_OUTPUT_SEGMENT; | |
008db82e | 146 | this->in_reg_ = true; |
ead1e424 ILT |
147 | } |
148 | ||
149 | // Initialize the fields in the base class Symbol for a symbol defined | |
150 | // as a constant. | |
151 | ||
152 | void | |
153 | Symbol::init_base(const char* name, elfcpp::STT type, | |
154 | elfcpp::STB binding, elfcpp::STV visibility, | |
155 | unsigned char nonvis) | |
156 | { | |
157 | this->init_fields(name, NULL, type, binding, visibility, nonvis); | |
158 | this->source_ = CONSTANT; | |
008db82e | 159 | this->in_reg_ = true; |
ead1e424 ILT |
160 | } |
161 | ||
162 | // Initialize the fields in Sized_symbol for SYM in OBJECT. | |
14bfc3f5 ILT |
163 | |
164 | template<int size> | |
165 | template<bool big_endian> | |
166 | void | |
167 | Sized_symbol<size>::init(const char* name, const char* version, Object* object, | |
168 | const elfcpp::Sym<size, big_endian>& sym) | |
169 | { | |
170 | this->init_base(name, version, object, sym); | |
171 | this->value_ = sym.get_st_value(); | |
ead1e424 ILT |
172 | this->symsize_ = sym.get_st_size(); |
173 | } | |
174 | ||
175 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
176 | // Output_data. | |
177 | ||
178 | template<int size> | |
179 | void | |
180 | Sized_symbol<size>::init(const char* name, Output_data* od, | |
181 | Value_type value, Size_type symsize, | |
182 | elfcpp::STT type, elfcpp::STB binding, | |
183 | elfcpp::STV visibility, unsigned char nonvis, | |
184 | bool offset_is_from_end) | |
185 | { | |
186 | this->init_base(name, od, type, binding, visibility, nonvis, | |
187 | offset_is_from_end); | |
188 | this->value_ = value; | |
189 | this->symsize_ = symsize; | |
190 | } | |
191 | ||
192 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
193 | // Output_segment. | |
194 | ||
195 | template<int size> | |
196 | void | |
197 | Sized_symbol<size>::init(const char* name, Output_segment* os, | |
198 | Value_type value, Size_type symsize, | |
199 | elfcpp::STT type, elfcpp::STB binding, | |
200 | elfcpp::STV visibility, unsigned char nonvis, | |
201 | Segment_offset_base offset_base) | |
202 | { | |
203 | this->init_base(name, os, type, binding, visibility, nonvis, offset_base); | |
204 | this->value_ = value; | |
205 | this->symsize_ = symsize; | |
206 | } | |
207 | ||
208 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
209 | // constant. | |
210 | ||
211 | template<int size> | |
212 | void | |
213 | Sized_symbol<size>::init(const char* name, Value_type value, Size_type symsize, | |
214 | elfcpp::STT type, elfcpp::STB binding, | |
215 | elfcpp::STV visibility, unsigned char nonvis) | |
216 | { | |
217 | this->init_base(name, type, binding, visibility, nonvis); | |
218 | this->value_ = value; | |
219 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
220 | } |
221 | ||
436ca963 ILT |
222 | // Return true if this symbol should be added to the dynamic symbol |
223 | // table. | |
224 | ||
225 | inline bool | |
226 | Symbol::should_add_dynsym_entry() const | |
227 | { | |
228 | // If the symbol is used by a dynamic relocation, we need to add it. | |
229 | if (this->needs_dynsym_entry()) | |
230 | return true; | |
231 | ||
232 | // If exporting all symbols or building a shared library, | |
233 | // and the symbol is defined in a regular object and is | |
234 | // externally visible, we need to add it. | |
235 | if ((parameters->export_dynamic() || parameters->output_is_shared()) | |
236 | && !this->is_from_dynobj() | |
237 | && this->is_externally_visible()) | |
238 | return true; | |
239 | ||
240 | return false; | |
241 | } | |
242 | ||
b3b74ddc ILT |
243 | // Return true if the final value of this symbol is known at link |
244 | // time. | |
245 | ||
246 | bool | |
247 | Symbol::final_value_is_known() const | |
248 | { | |
249 | // If we are not generating an executable, then no final values are | |
250 | // known, since they will change at runtime. | |
251 | if (!parameters->output_is_executable()) | |
252 | return false; | |
253 | ||
254 | // If the symbol is not from an object file, then it is defined, and | |
255 | // known. | |
256 | if (this->source_ != FROM_OBJECT) | |
257 | return true; | |
258 | ||
259 | // If the symbol is from a dynamic object, then the final value is | |
260 | // not known. | |
261 | if (this->object()->is_dynamic()) | |
262 | return false; | |
263 | ||
264 | // If the symbol is not undefined (it is defined or common), then | |
265 | // the final value is known. | |
266 | if (!this->is_undefined()) | |
267 | return true; | |
268 | ||
269 | // If the symbol is undefined, then whether the final value is known | |
270 | // depends on whether we are doing a static link. If we are doing a | |
271 | // dynamic link, then the final value could be filled in at runtime. | |
272 | // This could reasonably be the case for a weak undefined symbol. | |
273 | return parameters->doing_static_link(); | |
274 | } | |
275 | ||
14bfc3f5 ILT |
276 | // Class Symbol_table. |
277 | ||
278 | Symbol_table::Symbol_table() | |
9025d29d | 279 | : saw_undefined_(0), offset_(0), table_(), namepool_(), |
f6ce93d6 | 280 | forwarders_(), commons_(), warnings_() |
14bfc3f5 ILT |
281 | { |
282 | } | |
283 | ||
284 | Symbol_table::~Symbol_table() | |
285 | { | |
286 | } | |
287 | ||
288 | // The hash function. The key is always canonicalized, so we use a | |
289 | // simple combination of the pointers. | |
290 | ||
291 | size_t | |
292 | Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key& key) const | |
293 | { | |
f0641a0b | 294 | return key.first ^ key.second; |
14bfc3f5 ILT |
295 | } |
296 | ||
297 | // The symbol table key equality function. This is only called with | |
298 | // canonicalized name and version strings, so we can use pointer | |
299 | // comparison. | |
300 | ||
301 | bool | |
302 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, | |
303 | const Symbol_table_key& k2) const | |
304 | { | |
305 | return k1.first == k2.first && k1.second == k2.second; | |
306 | } | |
307 | ||
dd8670e5 | 308 | // Make TO a symbol which forwards to FROM. |
14bfc3f5 ILT |
309 | |
310 | void | |
311 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
312 | { | |
a3ad94ed ILT |
313 | gold_assert(from != to); |
314 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
315 | this->forwarders_[from] = to; |
316 | from->set_forwarder(); | |
317 | } | |
318 | ||
61ba1cf9 ILT |
319 | // Resolve the forwards from FROM, returning the real symbol. |
320 | ||
14bfc3f5 | 321 | Symbol* |
c06b7b0b | 322 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 323 | { |
a3ad94ed | 324 | gold_assert(from->is_forwarder()); |
c06b7b0b | 325 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 326 | this->forwarders_.find(from); |
a3ad94ed | 327 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
328 | return p->second; |
329 | } | |
330 | ||
61ba1cf9 ILT |
331 | // Look up a symbol by name. |
332 | ||
333 | Symbol* | |
334 | Symbol_table::lookup(const char* name, const char* version) const | |
335 | { | |
f0641a0b ILT |
336 | Stringpool::Key name_key; |
337 | name = this->namepool_.find(name, &name_key); | |
61ba1cf9 ILT |
338 | if (name == NULL) |
339 | return NULL; | |
f0641a0b ILT |
340 | |
341 | Stringpool::Key version_key = 0; | |
61ba1cf9 ILT |
342 | if (version != NULL) |
343 | { | |
f0641a0b | 344 | version = this->namepool_.find(version, &version_key); |
61ba1cf9 ILT |
345 | if (version == NULL) |
346 | return NULL; | |
347 | } | |
348 | ||
f0641a0b | 349 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
350 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
351 | if (p == this->table_.end()) | |
352 | return NULL; | |
353 | return p->second; | |
354 | } | |
355 | ||
14bfc3f5 ILT |
356 | // Resolve a Symbol with another Symbol. This is only used in the |
357 | // unusual case where there are references to both an unversioned | |
358 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
359 | // version is the default version. Because this is unusual, we do |
360 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 361 | |
1564db8d | 362 | template<int size, bool big_endian> |
14bfc3f5 | 363 | void |
14b31740 ILT |
364 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from, |
365 | const char* version ACCEPT_SIZE_ENDIAN) | |
14bfc3f5 | 366 | { |
1564db8d ILT |
367 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
368 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
369 | // We don't bother to set the st_name field. | |
370 | esym.put_st_value(from->value()); | |
371 | esym.put_st_size(from->symsize()); | |
372 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 373 | esym.put_st_other(from->visibility(), from->nonvis()); |
16649710 | 374 | esym.put_st_shndx(from->shndx()); |
70e654ba | 375 | this->resolve(to, esym.sym(), esym.sym(), from->object(), version); |
1ebd95fd ILT |
376 | if (from->in_reg()) |
377 | to->set_in_reg(); | |
378 | if (from->in_dyn()) | |
379 | to->set_in_dyn(); | |
14bfc3f5 ILT |
380 | } |
381 | ||
382 | // Add one symbol from OBJECT to the symbol table. NAME is symbol | |
383 | // name and VERSION is the version; both are canonicalized. DEF is | |
384 | // whether this is the default version. | |
385 | ||
386 | // If DEF is true, then this is the definition of a default version of | |
387 | // a symbol. That means that any lookup of NAME/NULL and any lookup | |
388 | // of NAME/VERSION should always return the same symbol. This is | |
389 | // obvious for references, but in particular we want to do this for | |
390 | // definitions: overriding NAME/NULL should also override | |
391 | // NAME/VERSION. If we don't do that, it would be very hard to | |
392 | // override functions in a shared library which uses versioning. | |
393 | ||
394 | // We implement this by simply making both entries in the hash table | |
395 | // point to the same Symbol structure. That is easy enough if this is | |
396 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
397 | // that we have seen both already, in which case they will both have | |
398 | // independent entries in the symbol table. We can't simply change | |
399 | // the symbol table entry, because we have pointers to the entries | |
400 | // attached to the object files. So we mark the entry attached to the | |
401 | // object file as a forwarder, and record it in the forwarders_ map. | |
402 | // Note that entries in the hash table will never be marked as | |
403 | // forwarders. | |
70e654ba ILT |
404 | // |
405 | // SYM and ORIG_SYM are almost always the same. ORIG_SYM is the | |
406 | // symbol exactly as it existed in the input file. SYM is usually | |
407 | // that as well, but can be modified, for instance if we determine | |
408 | // it's in a to-be-discarded section. | |
14bfc3f5 ILT |
409 | |
410 | template<int size, bool big_endian> | |
aeddab66 | 411 | Sized_symbol<size>* |
f6ce93d6 | 412 | Symbol_table::add_from_object(Object* object, |
14bfc3f5 | 413 | const char *name, |
f0641a0b ILT |
414 | Stringpool::Key name_key, |
415 | const char *version, | |
416 | Stringpool::Key version_key, | |
417 | bool def, | |
70e654ba ILT |
418 | const elfcpp::Sym<size, big_endian>& sym, |
419 | const elfcpp::Sym<size, big_endian>& orig_sym) | |
14bfc3f5 ILT |
420 | { |
421 | Symbol* const snull = NULL; | |
422 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
423 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
424 | snull)); | |
14bfc3f5 ILT |
425 | |
426 | std::pair<typename Symbol_table_type::iterator, bool> insdef = | |
427 | std::make_pair(this->table_.end(), false); | |
428 | if (def) | |
429 | { | |
f0641a0b ILT |
430 | const Stringpool::Key vnull_key = 0; |
431 | insdef = this->table_.insert(std::make_pair(std::make_pair(name_key, | |
432 | vnull_key), | |
14bfc3f5 ILT |
433 | snull)); |
434 | } | |
435 | ||
436 | // ins.first: an iterator, which is a pointer to a pair. | |
437 | // ins.first->first: the key (a pair of name and version). | |
438 | // ins.first->second: the value (Symbol*). | |
439 | // ins.second: true if new entry was inserted, false if not. | |
440 | ||
1564db8d | 441 | Sized_symbol<size>* ret; |
ead1e424 ILT |
442 | bool was_undefined; |
443 | bool was_common; | |
14bfc3f5 ILT |
444 | if (!ins.second) |
445 | { | |
446 | // We already have an entry for NAME/VERSION. | |
593f47df ILT |
447 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) (ins.first->second |
448 | SELECT_SIZE(size)); | |
a3ad94ed | 449 | gold_assert(ret != NULL); |
ead1e424 ILT |
450 | |
451 | was_undefined = ret->is_undefined(); | |
452 | was_common = ret->is_common(); | |
453 | ||
70e654ba | 454 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
455 | |
456 | if (def) | |
457 | { | |
458 | if (insdef.second) | |
459 | { | |
460 | // This is the first time we have seen NAME/NULL. Make | |
461 | // NAME/NULL point to NAME/VERSION. | |
462 | insdef.first->second = ret; | |
463 | } | |
dbe717ef | 464 | else if (insdef.first->second != ret) |
14bfc3f5 ILT |
465 | { |
466 | // This is the unfortunate case where we already have | |
467 | // entries for both NAME/VERSION and NAME/NULL. | |
274e99f9 | 468 | const Sized_symbol<size>* sym2; |
593f47df | 469 | sym2 = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d ILT |
470 | insdef.first->second |
471 | SELECT_SIZE(size)); | |
593f47df | 472 | Symbol_table::resolve SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
14b31740 | 473 | ret, sym2, version SELECT_SIZE_ENDIAN(size, big_endian)); |
14bfc3f5 ILT |
474 | this->make_forwarder(insdef.first->second, ret); |
475 | insdef.first->second = ret; | |
476 | } | |
477 | } | |
478 | } | |
479 | else | |
480 | { | |
481 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 482 | gold_assert(ins.first->second == NULL); |
ead1e424 ILT |
483 | |
484 | was_undefined = false; | |
485 | was_common = false; | |
486 | ||
14bfc3f5 ILT |
487 | if (def && !insdef.second) |
488 | { | |
14b31740 ILT |
489 | // We already have an entry for NAME/NULL. If we override |
490 | // it, then change it to NAME/VERSION. | |
593f47df ILT |
491 | ret = this->get_sized_symbol SELECT_SIZE_NAME(size) ( |
492 | insdef.first->second | |
493 | SELECT_SIZE(size)); | |
70e654ba | 494 | this->resolve(ret, sym, orig_sym, object, version); |
14bfc3f5 ILT |
495 | ins.first->second = ret; |
496 | } | |
497 | else | |
498 | { | |
f6ce93d6 ILT |
499 | Sized_target<size, big_endian>* target = |
500 | object->sized_target SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
501 | SELECT_SIZE_ENDIAN_ONLY(size, big_endian)); | |
1564db8d ILT |
502 | if (!target->has_make_symbol()) |
503 | ret = new Sized_symbol<size>(); | |
504 | else | |
14bfc3f5 | 505 | { |
1564db8d ILT |
506 | ret = target->make_symbol(); |
507 | if (ret == NULL) | |
14bfc3f5 ILT |
508 | { |
509 | // This means that we don't want a symbol table | |
510 | // entry after all. | |
511 | if (!def) | |
512 | this->table_.erase(ins.first); | |
513 | else | |
514 | { | |
515 | this->table_.erase(insdef.first); | |
516 | // Inserting insdef invalidated ins. | |
f0641a0b ILT |
517 | this->table_.erase(std::make_pair(name_key, |
518 | version_key)); | |
14bfc3f5 ILT |
519 | } |
520 | return NULL; | |
521 | } | |
522 | } | |
14bfc3f5 | 523 | |
1564db8d ILT |
524 | ret->init(name, version, object, sym); |
525 | ||
14bfc3f5 ILT |
526 | ins.first->second = ret; |
527 | if (def) | |
528 | { | |
529 | // This is the first time we have seen NAME/NULL. Point | |
530 | // it at the new entry for NAME/VERSION. | |
a3ad94ed | 531 | gold_assert(insdef.second); |
14bfc3f5 ILT |
532 | insdef.first->second = ret; |
533 | } | |
534 | } | |
535 | } | |
536 | ||
ead1e424 ILT |
537 | // Record every time we see a new undefined symbol, to speed up |
538 | // archive groups. | |
539 | if (!was_undefined && ret->is_undefined()) | |
540 | ++this->saw_undefined_; | |
541 | ||
542 | // Keep track of common symbols, to speed up common symbol | |
543 | // allocation. | |
544 | if (!was_common && ret->is_common()) | |
545 | this->commons_.push_back(ret); | |
546 | ||
14bfc3f5 ILT |
547 | return ret; |
548 | } | |
549 | ||
f6ce93d6 | 550 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
551 | |
552 | template<int size, bool big_endian> | |
553 | void | |
dbe717ef ILT |
554 | Symbol_table::add_from_relobj( |
555 | Sized_relobj<size, big_endian>* relobj, | |
f6ce93d6 | 556 | const unsigned char* syms, |
14bfc3f5 ILT |
557 | size_t count, |
558 | const char* sym_names, | |
559 | size_t sym_name_size, | |
730cdc88 | 560 | typename Sized_relobj<size, big_endian>::Symbols* sympointers) |
14bfc3f5 | 561 | { |
9025d29d ILT |
562 | gold_assert(size == relobj->target()->get_size()); |
563 | gold_assert(size == parameters->get_size()); | |
14bfc3f5 | 564 | |
a783673b ILT |
565 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
566 | ||
f6ce93d6 | 567 | const unsigned char* p = syms; |
a783673b | 568 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 ILT |
569 | { |
570 | elfcpp::Sym<size, big_endian> sym(p); | |
a783673b | 571 | elfcpp::Sym<size, big_endian>* psym = &sym; |
14bfc3f5 | 572 | |
a783673b | 573 | unsigned int st_name = psym->get_st_name(); |
14bfc3f5 ILT |
574 | if (st_name >= sym_name_size) |
575 | { | |
75f2446e ILT |
576 | relobj->error(_("bad global symbol name offset %u at %zu"), |
577 | st_name, i); | |
578 | continue; | |
14bfc3f5 ILT |
579 | } |
580 | ||
dbe717ef ILT |
581 | const char* name = sym_names + st_name; |
582 | ||
a783673b ILT |
583 | // A symbol defined in a section which we are not including must |
584 | // be treated as an undefined symbol. | |
585 | unsigned char symbuf[sym_size]; | |
586 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
587 | unsigned int st_shndx = psym->get_st_shndx(); | |
588 | if (st_shndx != elfcpp::SHN_UNDEF | |
589 | && st_shndx < elfcpp::SHN_LORESERVE | |
dbe717ef | 590 | && !relobj->is_section_included(st_shndx)) |
a783673b ILT |
591 | { |
592 | memcpy(symbuf, p, sym_size); | |
593 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
594 | sw.put_st_shndx(elfcpp::SHN_UNDEF); | |
595 | psym = &sym2; | |
596 | } | |
597 | ||
14bfc3f5 ILT |
598 | // In an object file, an '@' in the name separates the symbol |
599 | // name from the version name. If there are two '@' characters, | |
600 | // this is the default version. | |
601 | const char* ver = strchr(name, '@'); | |
602 | ||
aeddab66 | 603 | Sized_symbol<size>* res; |
14bfc3f5 ILT |
604 | if (ver == NULL) |
605 | { | |
f0641a0b | 606 | Stringpool::Key name_key; |
cfd73a4e | 607 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 608 | res = this->add_from_object(relobj, name, name_key, NULL, 0, |
70e654ba | 609 | false, *psym, sym); |
14bfc3f5 ILT |
610 | } |
611 | else | |
612 | { | |
f0641a0b | 613 | Stringpool::Key name_key; |
cfd73a4e | 614 | name = this->namepool_.add_prefix(name, ver - name, &name_key); |
f0641a0b | 615 | |
14bfc3f5 ILT |
616 | bool def = false; |
617 | ++ver; | |
618 | if (*ver == '@') | |
619 | { | |
620 | def = true; | |
621 | ++ver; | |
622 | } | |
f0641a0b ILT |
623 | |
624 | Stringpool::Key ver_key; | |
cfd73a4e | 625 | ver = this->namepool_.add(ver, true, &ver_key); |
f0641a0b | 626 | |
dbe717ef | 627 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
70e654ba | 628 | def, *psym, sym); |
14bfc3f5 ILT |
629 | } |
630 | ||
730cdc88 | 631 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
632 | } |
633 | } | |
634 | ||
dbe717ef ILT |
635 | // Add all the symbols in a dynamic object to the hash table. |
636 | ||
637 | template<int size, bool big_endian> | |
638 | void | |
639 | Symbol_table::add_from_dynobj( | |
640 | Sized_dynobj<size, big_endian>* dynobj, | |
641 | const unsigned char* syms, | |
642 | size_t count, | |
643 | const char* sym_names, | |
644 | size_t sym_name_size, | |
645 | const unsigned char* versym, | |
646 | size_t versym_size, | |
647 | const std::vector<const char*>* version_map) | |
648 | { | |
9025d29d ILT |
649 | gold_assert(size == dynobj->target()->get_size()); |
650 | gold_assert(size == parameters->get_size()); | |
dbe717ef ILT |
651 | |
652 | if (versym != NULL && versym_size / 2 < count) | |
653 | { | |
75f2446e ILT |
654 | dynobj->error(_("too few symbol versions")); |
655 | return; | |
dbe717ef ILT |
656 | } |
657 | ||
658 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
659 | ||
aeddab66 ILT |
660 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
661 | // weak aliases. This is necessary because if the dynamic object | |
662 | // provides the same variable under two names, one of which is a | |
663 | // weak definition, and the regular object refers to the weak | |
664 | // definition, we have to put both the weak definition and the | |
665 | // strong definition into the dynamic symbol table. Given a weak | |
666 | // definition, the only way that we can find the corresponding | |
667 | // strong definition, if any, is to search the symbol table. | |
668 | std::vector<Sized_symbol<size>*> object_symbols; | |
669 | ||
dbe717ef ILT |
670 | const unsigned char* p = syms; |
671 | const unsigned char* vs = versym; | |
672 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
673 | { | |
674 | elfcpp::Sym<size, big_endian> sym(p); | |
675 | ||
676 | // Ignore symbols with local binding. | |
677 | if (sym.get_st_bind() == elfcpp::STB_LOCAL) | |
678 | continue; | |
679 | ||
680 | unsigned int st_name = sym.get_st_name(); | |
681 | if (st_name >= sym_name_size) | |
682 | { | |
75f2446e ILT |
683 | dynobj->error(_("bad symbol name offset %u at %zu"), |
684 | st_name, i); | |
685 | continue; | |
dbe717ef ILT |
686 | } |
687 | ||
688 | const char* name = sym_names + st_name; | |
689 | ||
aeddab66 ILT |
690 | Sized_symbol<size>* res; |
691 | ||
dbe717ef ILT |
692 | if (versym == NULL) |
693 | { | |
694 | Stringpool::Key name_key; | |
cfd73a4e | 695 | name = this->namepool_.add(name, true, &name_key); |
aeddab66 | 696 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
70e654ba | 697 | false, sym, sym); |
dbe717ef | 698 | } |
aeddab66 ILT |
699 | else |
700 | { | |
701 | // Read the version information. | |
dbe717ef | 702 | |
aeddab66 | 703 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 704 | |
aeddab66 ILT |
705 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
706 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 707 | |
aeddab66 ILT |
708 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
709 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
710 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
711 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
712 | // for an undefined symbol. I don't know what the Sun | |
713 | // linker will generate. | |
dbe717ef | 714 | |
aeddab66 ILT |
715 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
716 | && sym.get_st_shndx() != elfcpp::SHN_UNDEF) | |
717 | { | |
718 | // This symbol should not be visible outside the object. | |
719 | continue; | |
720 | } | |
64707334 | 721 | |
aeddab66 ILT |
722 | // At this point we are definitely going to add this symbol. |
723 | Stringpool::Key name_key; | |
724 | name = this->namepool_.add(name, true, &name_key); | |
dbe717ef | 725 | |
aeddab66 ILT |
726 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
727 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
728 | { | |
729 | // This symbol does not have a version. | |
730 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 731 | false, sym, sym); |
aeddab66 ILT |
732 | } |
733 | else | |
734 | { | |
735 | if (v >= version_map->size()) | |
736 | { | |
737 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
738 | i, v); | |
739 | continue; | |
740 | } | |
dbe717ef | 741 | |
aeddab66 ILT |
742 | const char* version = (*version_map)[v]; |
743 | if (version == NULL) | |
744 | { | |
745 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
746 | i, v); | |
747 | continue; | |
748 | } | |
dbe717ef | 749 | |
aeddab66 ILT |
750 | Stringpool::Key version_key; |
751 | version = this->namepool_.add(version, true, &version_key); | |
752 | ||
753 | // If this is an absolute symbol, and the version name | |
754 | // and symbol name are the same, then this is the | |
755 | // version definition symbol. These symbols exist to | |
756 | // support using -u to pull in particular versions. We | |
757 | // do not want to record a version for them. | |
758 | if (sym.get_st_shndx() == elfcpp::SHN_ABS | |
759 | && name_key == version_key) | |
760 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
70e654ba | 761 | false, sym, sym); |
aeddab66 ILT |
762 | else |
763 | { | |
764 | const bool def = (!hidden | |
765 | && (sym.get_st_shndx() | |
766 | != elfcpp::SHN_UNDEF)); | |
767 | res = this->add_from_object(dynobj, name, name_key, version, | |
70e654ba | 768 | version_key, def, sym, sym); |
aeddab66 ILT |
769 | } |
770 | } | |
dbe717ef ILT |
771 | } |
772 | ||
aeddab66 ILT |
773 | if (sym.get_st_shndx() != elfcpp::SHN_UNDEF |
774 | && sym.get_st_type() == elfcpp::STT_OBJECT) | |
775 | object_symbols.push_back(res); | |
776 | } | |
777 | ||
778 | this->record_weak_aliases(&object_symbols); | |
779 | } | |
780 | ||
781 | // This is used to sort weak aliases. We sort them first by section | |
782 | // index, then by offset, then by weak ahead of strong. | |
783 | ||
784 | template<int size> | |
785 | class Weak_alias_sorter | |
786 | { | |
787 | public: | |
788 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
789 | }; | |
790 | ||
791 | template<int size> | |
792 | bool | |
793 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
794 | const Sized_symbol<size>* s2) const | |
795 | { | |
796 | if (s1->shndx() != s2->shndx()) | |
797 | return s1->shndx() < s2->shndx(); | |
798 | if (s1->value() != s2->value()) | |
799 | return s1->value() < s2->value(); | |
800 | if (s1->binding() != s2->binding()) | |
801 | { | |
802 | if (s1->binding() == elfcpp::STB_WEAK) | |
803 | return true; | |
804 | if (s2->binding() == elfcpp::STB_WEAK) | |
805 | return false; | |
806 | } | |
807 | return std::string(s1->name()) < std::string(s2->name()); | |
808 | } | |
dbe717ef | 809 | |
aeddab66 ILT |
810 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
811 | // for any weak aliases, and record them so that if we add the weak | |
812 | // alias to the dynamic symbol table, we also add the corresponding | |
813 | // strong symbol. | |
dbe717ef | 814 | |
aeddab66 ILT |
815 | template<int size> |
816 | void | |
817 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
818 | { | |
819 | // Sort the vector by section index, then by offset, then by weak | |
820 | // ahead of strong. | |
821 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
822 | ||
823 | // Walk through the vector. For each weak definition, record | |
824 | // aliases. | |
825 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
826 | symbols->begin(); | |
827 | p != symbols->end(); | |
828 | ++p) | |
829 | { | |
830 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
831 | continue; | |
832 | ||
833 | // Build a circular list of weak aliases. Each symbol points to | |
834 | // the next one in the circular list. | |
835 | ||
836 | Sized_symbol<size>* from_sym = *p; | |
837 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
838 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 839 | { |
aeddab66 ILT |
840 | if ((*q)->shndx() != from_sym->shndx() |
841 | || (*q)->value() != from_sym->value()) | |
842 | break; | |
843 | ||
844 | this->weak_aliases_[from_sym] = *q; | |
845 | from_sym->set_has_alias(); | |
846 | from_sym = *q; | |
dbe717ef ILT |
847 | } |
848 | ||
aeddab66 ILT |
849 | if (from_sym != *p) |
850 | { | |
851 | this->weak_aliases_[from_sym] = *p; | |
852 | from_sym->set_has_alias(); | |
853 | } | |
dbe717ef | 854 | |
aeddab66 | 855 | p = q - 1; |
dbe717ef ILT |
856 | } |
857 | } | |
858 | ||
ead1e424 ILT |
859 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
860 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 861 | // If this does not return NULL, it sets *POLDSYM to the existing |
306d9ef0 | 862 | // symbol if there is one. This canonicalizes *PNAME and *PVERSION. |
ead1e424 ILT |
863 | |
864 | template<int size, bool big_endian> | |
865 | Sized_symbol<size>* | |
306d9ef0 ILT |
866 | Symbol_table::define_special_symbol(const Target* target, const char** pname, |
867 | const char** pversion, bool only_if_ref, | |
86f2e683 | 868 | Sized_symbol<size>** poldsym |
593f47df | 869 | ACCEPT_SIZE_ENDIAN) |
ead1e424 | 870 | { |
ead1e424 ILT |
871 | Symbol* oldsym; |
872 | Sized_symbol<size>* sym; | |
86f2e683 ILT |
873 | bool add_to_table = false; |
874 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
ead1e424 ILT |
875 | |
876 | if (only_if_ref) | |
877 | { | |
306d9ef0 | 878 | oldsym = this->lookup(*pname, *pversion); |
f6ce93d6 | 879 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 880 | return NULL; |
306d9ef0 ILT |
881 | |
882 | *pname = oldsym->name(); | |
883 | *pversion = oldsym->version(); | |
ead1e424 ILT |
884 | } |
885 | else | |
886 | { | |
14b31740 | 887 | // Canonicalize NAME and VERSION. |
f0641a0b | 888 | Stringpool::Key name_key; |
cfd73a4e | 889 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 890 | |
14b31740 | 891 | Stringpool::Key version_key = 0; |
306d9ef0 | 892 | if (*pversion != NULL) |
cfd73a4e | 893 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 894 | |
ead1e424 | 895 | Symbol* const snull = NULL; |
ead1e424 | 896 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
897 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
898 | version_key), | |
ead1e424 ILT |
899 | snull)); |
900 | ||
901 | if (!ins.second) | |
902 | { | |
14b31740 | 903 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 904 | oldsym = ins.first->second; |
a3ad94ed | 905 | gold_assert(oldsym != NULL); |
ead1e424 ILT |
906 | } |
907 | else | |
908 | { | |
909 | // We haven't seen this symbol before. | |
a3ad94ed | 910 | gold_assert(ins.first->second == NULL); |
86f2e683 ILT |
911 | add_to_table = true; |
912 | add_loc = ins.first; | |
ead1e424 ILT |
913 | oldsym = NULL; |
914 | } | |
915 | } | |
916 | ||
86f2e683 ILT |
917 | if (!target->has_make_symbol()) |
918 | sym = new Sized_symbol<size>(); | |
919 | else | |
ead1e424 | 920 | { |
86f2e683 ILT |
921 | gold_assert(target->get_size() == size); |
922 | gold_assert(target->is_big_endian() ? big_endian : !big_endian); | |
923 | typedef Sized_target<size, big_endian> My_target; | |
924 | const My_target* sized_target = | |
925 | static_cast<const My_target*>(target); | |
926 | sym = sized_target->make_symbol(); | |
927 | if (sym == NULL) | |
928 | return NULL; | |
929 | } | |
ead1e424 | 930 | |
86f2e683 ILT |
931 | if (add_to_table) |
932 | add_loc->second = sym; | |
933 | else | |
934 | gold_assert(oldsym != NULL); | |
ead1e424 | 935 | |
86f2e683 ILT |
936 | *poldsym = this->get_sized_symbol SELECT_SIZE_NAME(size) (oldsym |
937 | SELECT_SIZE(size)); | |
ead1e424 ILT |
938 | |
939 | return sym; | |
940 | } | |
941 | ||
942 | // Define a symbol based on an Output_data. | |
943 | ||
14b31740 ILT |
944 | Symbol* |
945 | Symbol_table::define_in_output_data(const Target* target, const char* name, | |
946 | const char* version, Output_data* od, | |
ead1e424 ILT |
947 | uint64_t value, uint64_t symsize, |
948 | elfcpp::STT type, elfcpp::STB binding, | |
949 | elfcpp::STV visibility, | |
950 | unsigned char nonvis, | |
951 | bool offset_is_from_end, | |
952 | bool only_if_ref) | |
953 | { | |
9025d29d | 954 | if (parameters->get_size() == 32) |
86f2e683 ILT |
955 | { |
956 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
957 | return this->do_define_in_output_data<32>(target, name, version, od, | |
958 | value, symsize, type, binding, | |
959 | visibility, nonvis, | |
960 | offset_is_from_end, | |
961 | only_if_ref); | |
962 | #else | |
963 | gold_unreachable(); | |
964 | #endif | |
965 | } | |
9025d29d | 966 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
967 | { |
968 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
969 | return this->do_define_in_output_data<64>(target, name, version, od, | |
970 | value, symsize, type, binding, | |
971 | visibility, nonvis, | |
972 | offset_is_from_end, | |
973 | only_if_ref); | |
974 | #else | |
975 | gold_unreachable(); | |
976 | #endif | |
977 | } | |
ead1e424 | 978 | else |
a3ad94ed | 979 | gold_unreachable(); |
ead1e424 ILT |
980 | } |
981 | ||
982 | // Define a symbol in an Output_data, sized version. | |
983 | ||
984 | template<int size> | |
14b31740 | 985 | Sized_symbol<size>* |
ead1e424 | 986 | Symbol_table::do_define_in_output_data( |
14b31740 | 987 | const Target* target, |
ead1e424 | 988 | const char* name, |
14b31740 | 989 | const char* version, |
ead1e424 ILT |
990 | Output_data* od, |
991 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
992 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
993 | elfcpp::STT type, | |
994 | elfcpp::STB binding, | |
995 | elfcpp::STV visibility, | |
996 | unsigned char nonvis, | |
997 | bool offset_is_from_end, | |
998 | bool only_if_ref) | |
999 | { | |
1000 | Sized_symbol<size>* sym; | |
86f2e683 | 1001 | Sized_symbol<size>* oldsym; |
ead1e424 | 1002 | |
9025d29d | 1003 | if (parameters->is_big_endian()) |
193a53d9 ILT |
1004 | { |
1005 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1006 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
306d9ef0 | 1007 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1008 | SELECT_SIZE_ENDIAN(size, true)); |
1009 | #else | |
1010 | gold_unreachable(); | |
1011 | #endif | |
1012 | } | |
ead1e424 | 1013 | else |
193a53d9 ILT |
1014 | { |
1015 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1016 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
306d9ef0 | 1017 | target, &name, &version, only_if_ref, &oldsym |
193a53d9 ILT |
1018 | SELECT_SIZE_ENDIAN(size, false)); |
1019 | #else | |
1020 | gold_unreachable(); | |
1021 | #endif | |
1022 | } | |
ead1e424 ILT |
1023 | |
1024 | if (sym == NULL) | |
14b31740 | 1025 | return NULL; |
ead1e424 | 1026 | |
d4f5281b | 1027 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1028 | sym->init(name, od, value, symsize, type, binding, visibility, nonvis, |
1029 | offset_is_from_end); | |
14b31740 | 1030 | |
86f2e683 ILT |
1031 | if (oldsym != NULL |
1032 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1033 | this->override_with_special(oldsym, sym); |
86f2e683 | 1034 | |
14b31740 | 1035 | return sym; |
ead1e424 ILT |
1036 | } |
1037 | ||
1038 | // Define a symbol based on an Output_segment. | |
1039 | ||
14b31740 ILT |
1040 | Symbol* |
1041 | Symbol_table::define_in_output_segment(const Target* target, const char* name, | |
1042 | const char* version, Output_segment* os, | |
ead1e424 ILT |
1043 | uint64_t value, uint64_t symsize, |
1044 | elfcpp::STT type, elfcpp::STB binding, | |
1045 | elfcpp::STV visibility, | |
1046 | unsigned char nonvis, | |
1047 | Symbol::Segment_offset_base offset_base, | |
1048 | bool only_if_ref) | |
1049 | { | |
9025d29d | 1050 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1051 | { |
1052 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1053 | return this->do_define_in_output_segment<32>(target, name, version, os, | |
1054 | value, symsize, type, | |
1055 | binding, visibility, nonvis, | |
1056 | offset_base, only_if_ref); | |
1057 | #else | |
1058 | gold_unreachable(); | |
1059 | #endif | |
1060 | } | |
9025d29d | 1061 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1062 | { |
1063 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1064 | return this->do_define_in_output_segment<64>(target, name, version, os, | |
1065 | value, symsize, type, | |
1066 | binding, visibility, nonvis, | |
1067 | offset_base, only_if_ref); | |
1068 | #else | |
1069 | gold_unreachable(); | |
1070 | #endif | |
1071 | } | |
ead1e424 | 1072 | else |
a3ad94ed | 1073 | gold_unreachable(); |
ead1e424 ILT |
1074 | } |
1075 | ||
1076 | // Define a symbol in an Output_segment, sized version. | |
1077 | ||
1078 | template<int size> | |
14b31740 | 1079 | Sized_symbol<size>* |
ead1e424 | 1080 | Symbol_table::do_define_in_output_segment( |
14b31740 | 1081 | const Target* target, |
ead1e424 | 1082 | const char* name, |
14b31740 | 1083 | const char* version, |
ead1e424 ILT |
1084 | Output_segment* os, |
1085 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1086 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1087 | elfcpp::STT type, | |
1088 | elfcpp::STB binding, | |
1089 | elfcpp::STV visibility, | |
1090 | unsigned char nonvis, | |
1091 | Symbol::Segment_offset_base offset_base, | |
1092 | bool only_if_ref) | |
1093 | { | |
1094 | Sized_symbol<size>* sym; | |
86f2e683 | 1095 | Sized_symbol<size>* oldsym; |
ead1e424 | 1096 | |
9025d29d ILT |
1097 | if (parameters->is_big_endian()) |
1098 | { | |
1099 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1100 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1101 | target, &name, &version, only_if_ref, &oldsym | |
1102 | SELECT_SIZE_ENDIAN(size, true)); | |
1103 | #else | |
1104 | gold_unreachable(); | |
1105 | #endif | |
1106 | } | |
ead1e424 | 1107 | else |
9025d29d ILT |
1108 | { |
1109 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1110 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1111 | target, &name, &version, only_if_ref, &oldsym | |
1112 | SELECT_SIZE_ENDIAN(size, false)); | |
1113 | #else | |
1114 | gold_unreachable(); | |
1115 | #endif | |
1116 | } | |
ead1e424 ILT |
1117 | |
1118 | if (sym == NULL) | |
14b31740 | 1119 | return NULL; |
ead1e424 | 1120 | |
d4f5281b | 1121 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 ILT |
1122 | sym->init(name, os, value, symsize, type, binding, visibility, nonvis, |
1123 | offset_base); | |
14b31740 | 1124 | |
86f2e683 ILT |
1125 | if (oldsym != NULL |
1126 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1127 | this->override_with_special(oldsym, sym); |
86f2e683 | 1128 | |
14b31740 | 1129 | return sym; |
ead1e424 ILT |
1130 | } |
1131 | ||
1132 | // Define a special symbol with a constant value. It is a multiple | |
1133 | // definition error if this symbol is already defined. | |
1134 | ||
14b31740 ILT |
1135 | Symbol* |
1136 | Symbol_table::define_as_constant(const Target* target, const char* name, | |
1137 | const char* version, uint64_t value, | |
1138 | uint64_t symsize, elfcpp::STT type, | |
1139 | elfcpp::STB binding, elfcpp::STV visibility, | |
1140 | unsigned char nonvis, bool only_if_ref) | |
ead1e424 | 1141 | { |
9025d29d | 1142 | if (parameters->get_size() == 32) |
86f2e683 ILT |
1143 | { |
1144 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
1145 | return this->do_define_as_constant<32>(target, name, version, value, | |
1146 | symsize, type, binding, | |
1147 | visibility, nonvis, only_if_ref); | |
1148 | #else | |
1149 | gold_unreachable(); | |
1150 | #endif | |
1151 | } | |
9025d29d | 1152 | else if (parameters->get_size() == 64) |
86f2e683 ILT |
1153 | { |
1154 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
1155 | return this->do_define_as_constant<64>(target, name, version, value, | |
1156 | symsize, type, binding, | |
1157 | visibility, nonvis, only_if_ref); | |
1158 | #else | |
1159 | gold_unreachable(); | |
1160 | #endif | |
1161 | } | |
ead1e424 | 1162 | else |
a3ad94ed | 1163 | gold_unreachable(); |
ead1e424 ILT |
1164 | } |
1165 | ||
1166 | // Define a symbol as a constant, sized version. | |
1167 | ||
1168 | template<int size> | |
14b31740 | 1169 | Sized_symbol<size>* |
ead1e424 | 1170 | Symbol_table::do_define_as_constant( |
14b31740 | 1171 | const Target* target, |
ead1e424 | 1172 | const char* name, |
14b31740 | 1173 | const char* version, |
ead1e424 ILT |
1174 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1175 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
1176 | elfcpp::STT type, | |
1177 | elfcpp::STB binding, | |
1178 | elfcpp::STV visibility, | |
1179 | unsigned char nonvis, | |
1180 | bool only_if_ref) | |
1181 | { | |
1182 | Sized_symbol<size>* sym; | |
86f2e683 | 1183 | Sized_symbol<size>* oldsym; |
ead1e424 | 1184 | |
9025d29d ILT |
1185 | if (parameters->is_big_endian()) |
1186 | { | |
1187 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
1188 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, true) ( | |
1189 | target, &name, &version, only_if_ref, &oldsym | |
1190 | SELECT_SIZE_ENDIAN(size, true)); | |
1191 | #else | |
1192 | gold_unreachable(); | |
1193 | #endif | |
1194 | } | |
ead1e424 | 1195 | else |
9025d29d ILT |
1196 | { |
1197 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
1198 | sym = this->define_special_symbol SELECT_SIZE_ENDIAN_NAME(size, false) ( | |
1199 | target, &name, &version, only_if_ref, &oldsym | |
1200 | SELECT_SIZE_ENDIAN(size, false)); | |
1201 | #else | |
1202 | gold_unreachable(); | |
1203 | #endif | |
1204 | } | |
ead1e424 ILT |
1205 | |
1206 | if (sym == NULL) | |
14b31740 | 1207 | return NULL; |
ead1e424 | 1208 | |
d4f5281b | 1209 | gold_assert(version == NULL || oldsym != NULL); |
ead1e424 | 1210 | sym->init(name, value, symsize, type, binding, visibility, nonvis); |
14b31740 | 1211 | |
86f2e683 ILT |
1212 | if (oldsym != NULL |
1213 | && Symbol_table::should_override_with_special(oldsym)) | |
aeddab66 | 1214 | this->override_with_special(oldsym, sym); |
86f2e683 | 1215 | |
14b31740 | 1216 | return sym; |
ead1e424 ILT |
1217 | } |
1218 | ||
1219 | // Define a set of symbols in output sections. | |
1220 | ||
1221 | void | |
14b31740 ILT |
1222 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1223 | int count, const Define_symbol_in_section* p) | |
ead1e424 ILT |
1224 | { |
1225 | for (int i = 0; i < count; ++i, ++p) | |
1226 | { | |
1227 | Output_section* os = layout->find_output_section(p->output_section); | |
1228 | if (os != NULL) | |
14b31740 ILT |
1229 | this->define_in_output_data(target, p->name, NULL, os, p->value, |
1230 | p->size, p->type, p->binding, | |
1231 | p->visibility, p->nonvis, | |
1232 | p->offset_is_from_end, p->only_if_ref); | |
ead1e424 | 1233 | else |
14b31740 | 1234 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1235 | p->binding, p->visibility, p->nonvis, |
1236 | p->only_if_ref); | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | // Define a set of symbols in output segments. | |
1241 | ||
1242 | void | |
14b31740 ILT |
1243 | Symbol_table::define_symbols(const Layout* layout, const Target* target, |
1244 | int count, const Define_symbol_in_segment* p) | |
ead1e424 ILT |
1245 | { |
1246 | for (int i = 0; i < count; ++i, ++p) | |
1247 | { | |
1248 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
1249 | p->segment_flags_set, | |
1250 | p->segment_flags_clear); | |
1251 | if (os != NULL) | |
14b31740 ILT |
1252 | this->define_in_output_segment(target, p->name, NULL, os, p->value, |
1253 | p->size, p->type, p->binding, | |
1254 | p->visibility, p->nonvis, | |
1255 | p->offset_base, p->only_if_ref); | |
ead1e424 | 1256 | else |
14b31740 | 1257 | this->define_as_constant(target, p->name, NULL, 0, p->size, p->type, |
ead1e424 ILT |
1258 | p->binding, p->visibility, p->nonvis, |
1259 | p->only_if_ref); | |
1260 | } | |
1261 | } | |
1262 | ||
46fe1623 ILT |
1263 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
1264 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
1265 | // the offset within POSD. | |
1266 | ||
1267 | template<int size> | |
1268 | void | |
1269 | Symbol_table::define_with_copy_reloc(const Target* target, | |
1270 | Sized_symbol<size>* csym, | |
1271 | Output_data* posd, uint64_t value) | |
1272 | { | |
1273 | gold_assert(csym->is_from_dynobj()); | |
1274 | gold_assert(!csym->is_copied_from_dynobj()); | |
1275 | Object* object = csym->object(); | |
1276 | gold_assert(object->is_dynamic()); | |
1277 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
1278 | ||
1279 | // Our copied variable has to override any variable in a shared | |
1280 | // library. | |
1281 | elfcpp::STB binding = csym->binding(); | |
1282 | if (binding == elfcpp::STB_WEAK) | |
1283 | binding = elfcpp::STB_GLOBAL; | |
1284 | ||
1285 | this->define_in_output_data(target, csym->name(), csym->version(), | |
1286 | posd, value, csym->symsize(), | |
1287 | csym->type(), binding, | |
1288 | csym->visibility(), csym->nonvis(), | |
1289 | false, false); | |
1290 | ||
1291 | csym->set_is_copied_from_dynobj(); | |
1292 | csym->set_needs_dynsym_entry(); | |
1293 | ||
1294 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
1295 | ||
1296 | // We have now defined all aliases, but we have not entered them all | |
1297 | // in the copied_symbol_dynobjs_ map. | |
1298 | if (csym->has_alias()) | |
1299 | { | |
1300 | Symbol* sym = csym; | |
1301 | while (true) | |
1302 | { | |
1303 | sym = this->weak_aliases_[sym]; | |
1304 | if (sym == csym) | |
1305 | break; | |
1306 | gold_assert(sym->output_data() == posd); | |
1307 | ||
1308 | sym->set_is_copied_from_dynobj(); | |
1309 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
1310 | } | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
1315 | // the original definition was found. | |
1316 | ||
1317 | Dynobj* | |
1318 | Symbol_table::get_copy_source(const Symbol* sym) const | |
1319 | { | |
1320 | gold_assert(sym->is_copied_from_dynobj()); | |
1321 | Copied_symbol_dynobjs::const_iterator p = | |
1322 | this->copied_symbol_dynobjs_.find(sym); | |
1323 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
1324 | return p->second; | |
1325 | } | |
1326 | ||
a3ad94ed ILT |
1327 | // Set the dynamic symbol indexes. INDEX is the index of the first |
1328 | // global dynamic symbol. Pointers to the symbols are stored into the | |
1329 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
1330 | // updated dynamic symbol index. | |
1331 | ||
1332 | unsigned int | |
35cdfc9a | 1333 | Symbol_table::set_dynsym_indexes(const Target* target, |
14b31740 | 1334 | unsigned int index, |
a3ad94ed | 1335 | std::vector<Symbol*>* syms, |
14b31740 ILT |
1336 | Stringpool* dynpool, |
1337 | Versions* versions) | |
a3ad94ed ILT |
1338 | { |
1339 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
1340 | p != this->table_.end(); | |
1341 | ++p) | |
1342 | { | |
1343 | Symbol* sym = p->second; | |
16649710 ILT |
1344 | |
1345 | // Note that SYM may already have a dynamic symbol index, since | |
1346 | // some symbols appear more than once in the symbol table, with | |
1347 | // and without a version. | |
1348 | ||
436ca963 | 1349 | if (!sym->should_add_dynsym_entry()) |
16649710 ILT |
1350 | sym->set_dynsym_index(-1U); |
1351 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
1352 | { |
1353 | sym->set_dynsym_index(index); | |
1354 | ++index; | |
1355 | syms->push_back(sym); | |
cfd73a4e | 1356 | dynpool->add(sym->name(), false, NULL); |
14b31740 ILT |
1357 | |
1358 | // Record any version information. | |
1359 | if (sym->version() != NULL) | |
35cdfc9a | 1360 | versions->record_version(this, dynpool, sym); |
a3ad94ed ILT |
1361 | } |
1362 | } | |
1363 | ||
14b31740 ILT |
1364 | // Finish up the versions. In some cases this may add new dynamic |
1365 | // symbols. | |
1366 | index = versions->finalize(target, this, index, syms); | |
1367 | ||
a3ad94ed ILT |
1368 | return index; |
1369 | } | |
1370 | ||
c06b7b0b ILT |
1371 | // Set the final values for all the symbols. The index of the first |
1372 | // global symbol in the output file is INDEX. Record the file offset | |
75f65a3e | 1373 | // OFF. Add their names to POOL. Return the new file offset. |
54dc6425 | 1374 | |
75f65a3e | 1375 | off_t |
16649710 ILT |
1376 | Symbol_table::finalize(unsigned int index, off_t off, off_t dynoff, |
1377 | size_t dyn_global_index, size_t dyncount, | |
1378 | Stringpool* pool) | |
54dc6425 | 1379 | { |
f6ce93d6 ILT |
1380 | off_t ret; |
1381 | ||
a3ad94ed | 1382 | gold_assert(index != 0); |
c06b7b0b ILT |
1383 | this->first_global_index_ = index; |
1384 | ||
16649710 ILT |
1385 | this->dynamic_offset_ = dynoff; |
1386 | this->first_dynamic_global_index_ = dyn_global_index; | |
1387 | this->dynamic_count_ = dyncount; | |
1388 | ||
9025d29d ILT |
1389 | if (parameters->get_size() == 32) |
1390 | { | |
1391 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
1392 | ret = this->sized_finalize<32>(index, off, pool); | |
1393 | #else | |
1394 | gold_unreachable(); | |
1395 | #endif | |
1396 | } | |
1397 | else if (parameters->get_size() == 64) | |
1398 | { | |
1399 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
1400 | ret = this->sized_finalize<64>(index, off, pool); | |
1401 | #else | |
1402 | gold_unreachable(); | |
1403 | #endif | |
1404 | } | |
61ba1cf9 | 1405 | else |
a3ad94ed | 1406 | gold_unreachable(); |
f6ce93d6 ILT |
1407 | |
1408 | // Now that we have the final symbol table, we can reliably note | |
1409 | // which symbols should get warnings. | |
1410 | this->warnings_.note_warnings(this); | |
1411 | ||
1412 | return ret; | |
75f65a3e ILT |
1413 | } |
1414 | ||
ead1e424 ILT |
1415 | // Set the final value for all the symbols. This is called after |
1416 | // Layout::finalize, so all the output sections have their final | |
1417 | // address. | |
75f65a3e ILT |
1418 | |
1419 | template<int size> | |
1420 | off_t | |
c06b7b0b | 1421 | Symbol_table::sized_finalize(unsigned index, off_t off, Stringpool* pool) |
75f65a3e | 1422 | { |
ead1e424 | 1423 | off = align_address(off, size >> 3); |
75f65a3e ILT |
1424 | this->offset_ = off; |
1425 | ||
c06b7b0b ILT |
1426 | size_t orig_index = index; |
1427 | ||
75f65a3e | 1428 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1429 | for (Symbol_table_type::iterator p = this->table_.begin(); |
1430 | p != this->table_.end(); | |
1431 | ++p) | |
54dc6425 | 1432 | { |
75f65a3e | 1433 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); |
54dc6425 | 1434 | |
75f65a3e | 1435 | // FIXME: Here we need to decide which symbols should go into |
a3ad94ed ILT |
1436 | // the output file, based on --strip. |
1437 | ||
1438 | // The default version of a symbol may appear twice in the | |
1439 | // symbol table. We only need to finalize it once. | |
1440 | if (sym->has_symtab_index()) | |
1441 | continue; | |
75f65a3e | 1442 | |
008db82e ILT |
1443 | if (!sym->in_reg()) |
1444 | { | |
1445 | gold_assert(!sym->has_symtab_index()); | |
1446 | sym->set_symtab_index(-1U); | |
1447 | gold_assert(sym->dynsym_index() == -1U); | |
1448 | continue; | |
1449 | } | |
1450 | ||
ead1e424 | 1451 | typename Sized_symbol<size>::Value_type value; |
75f65a3e | 1452 | |
ead1e424 | 1453 | switch (sym->source()) |
75f65a3e | 1454 | { |
ead1e424 ILT |
1455 | case Symbol::FROM_OBJECT: |
1456 | { | |
16649710 | 1457 | unsigned int shndx = sym->shndx(); |
ead1e424 ILT |
1458 | |
1459 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1460 | if (shndx >= elfcpp::SHN_LORESERVE |
1461 | && shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1462 | { |
75f2446e | 1463 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1464 | sym->demangled_name().c_str(), shndx); |
75f2446e | 1465 | shndx = elfcpp::SHN_UNDEF; |
ead1e424 ILT |
1466 | } |
1467 | ||
f6ce93d6 ILT |
1468 | Object* symobj = sym->object(); |
1469 | if (symobj->is_dynamic()) | |
1470 | { | |
1471 | value = 0; | |
16649710 | 1472 | shndx = elfcpp::SHN_UNDEF; |
f6ce93d6 | 1473 | } |
16649710 | 1474 | else if (shndx == elfcpp::SHN_UNDEF) |
ead1e424 | 1475 | value = 0; |
16649710 | 1476 | else if (shndx == elfcpp::SHN_ABS) |
ead1e424 ILT |
1477 | value = sym->value(); |
1478 | else | |
1479 | { | |
f6ce93d6 | 1480 | Relobj* relobj = static_cast<Relobj*>(symobj); |
ead1e424 | 1481 | off_t secoff; |
16649710 | 1482 | Output_section* os = relobj->output_section(shndx, &secoff); |
ead1e424 ILT |
1483 | |
1484 | if (os == NULL) | |
1485 | { | |
c06b7b0b | 1486 | sym->set_symtab_index(-1U); |
16649710 | 1487 | gold_assert(sym->dynsym_index() == -1U); |
ead1e424 ILT |
1488 | continue; |
1489 | } | |
1490 | ||
1491 | value = sym->value() + os->address() + secoff; | |
1492 | } | |
1493 | } | |
1494 | break; | |
1495 | ||
1496 | case Symbol::IN_OUTPUT_DATA: | |
1497 | { | |
1498 | Output_data* od = sym->output_data(); | |
1499 | value = sym->value() + od->address(); | |
1500 | if (sym->offset_is_from_end()) | |
1501 | value += od->data_size(); | |
1502 | } | |
1503 | break; | |
1504 | ||
1505 | case Symbol::IN_OUTPUT_SEGMENT: | |
1506 | { | |
1507 | Output_segment* os = sym->output_segment(); | |
1508 | value = sym->value() + os->vaddr(); | |
1509 | switch (sym->offset_base()) | |
1510 | { | |
1511 | case Symbol::SEGMENT_START: | |
1512 | break; | |
1513 | case Symbol::SEGMENT_END: | |
1514 | value += os->memsz(); | |
1515 | break; | |
1516 | case Symbol::SEGMENT_BSS: | |
1517 | value += os->filesz(); | |
1518 | break; | |
1519 | default: | |
a3ad94ed | 1520 | gold_unreachable(); |
ead1e424 ILT |
1521 | } |
1522 | } | |
1523 | break; | |
1524 | ||
1525 | case Symbol::CONSTANT: | |
1526 | value = sym->value(); | |
1527 | break; | |
1528 | ||
1529 | default: | |
a3ad94ed | 1530 | gold_unreachable(); |
54dc6425 | 1531 | } |
ead1e424 ILT |
1532 | |
1533 | sym->set_value(value); | |
9e2dcb77 ILT |
1534 | |
1535 | if (parameters->strip_all()) | |
1536 | sym->set_symtab_index(-1U); | |
1537 | else | |
1538 | { | |
1539 | sym->set_symtab_index(index); | |
cfd73a4e | 1540 | pool->add(sym->name(), false, NULL); |
9e2dcb77 ILT |
1541 | ++index; |
1542 | off += sym_size; | |
1543 | } | |
54dc6425 | 1544 | } |
75f65a3e | 1545 | |
c06b7b0b | 1546 | this->output_count_ = index - orig_index; |
61ba1cf9 | 1547 | |
75f65a3e | 1548 | return off; |
54dc6425 ILT |
1549 | } |
1550 | ||
61ba1cf9 ILT |
1551 | // Write out the global symbols. |
1552 | ||
1553 | void | |
9a2d6984 ILT |
1554 | Symbol_table::write_globals(const Input_objects* input_objects, |
1555 | const Stringpool* sympool, | |
16649710 | 1556 | const Stringpool* dynpool, Output_file* of) const |
61ba1cf9 | 1557 | { |
9025d29d | 1558 | if (parameters->get_size() == 32) |
61ba1cf9 | 1559 | { |
9025d29d ILT |
1560 | if (parameters->is_big_endian()) |
1561 | { | |
1562 | #ifdef HAVE_TARGET_32_BIG | |
9a2d6984 ILT |
1563 | this->sized_write_globals<32, true>(input_objects, sympool, |
1564 | dynpool, of); | |
9025d29d ILT |
1565 | #else |
1566 | gold_unreachable(); | |
1567 | #endif | |
1568 | } | |
61ba1cf9 | 1569 | else |
9025d29d ILT |
1570 | { |
1571 | #ifdef HAVE_TARGET_32_LITTLE | |
9a2d6984 ILT |
1572 | this->sized_write_globals<32, false>(input_objects, sympool, |
1573 | dynpool, of); | |
9025d29d ILT |
1574 | #else |
1575 | gold_unreachable(); | |
1576 | #endif | |
1577 | } | |
61ba1cf9 | 1578 | } |
9025d29d | 1579 | else if (parameters->get_size() == 64) |
61ba1cf9 | 1580 | { |
9025d29d ILT |
1581 | if (parameters->is_big_endian()) |
1582 | { | |
1583 | #ifdef HAVE_TARGET_64_BIG | |
9a2d6984 ILT |
1584 | this->sized_write_globals<64, 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_64_LITTLE | |
9a2d6984 ILT |
1593 | this->sized_write_globals<64, false>(input_objects, sympool, |
1594 | dynpool, of); | |
9025d29d ILT |
1595 | #else |
1596 | gold_unreachable(); | |
1597 | #endif | |
1598 | } | |
61ba1cf9 ILT |
1599 | } |
1600 | else | |
a3ad94ed | 1601 | gold_unreachable(); |
61ba1cf9 ILT |
1602 | } |
1603 | ||
1604 | // Write out the global symbols. | |
1605 | ||
1606 | template<int size, bool big_endian> | |
1607 | void | |
9a2d6984 | 1608 | Symbol_table::sized_write_globals(const Input_objects* input_objects, |
61ba1cf9 | 1609 | const Stringpool* sympool, |
16649710 | 1610 | const Stringpool* dynpool, |
61ba1cf9 ILT |
1611 | Output_file* of) const |
1612 | { | |
9a2d6984 ILT |
1613 | const Target* const target = input_objects->target(); |
1614 | ||
61ba1cf9 | 1615 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
c06b7b0b ILT |
1616 | unsigned int index = this->first_global_index_; |
1617 | const off_t oview_size = this->output_count_ * sym_size; | |
16649710 ILT |
1618 | unsigned char* const psyms = of->get_output_view(this->offset_, oview_size); |
1619 | ||
1620 | unsigned int dynamic_count = this->dynamic_count_; | |
1621 | off_t dynamic_size = dynamic_count * sym_size; | |
1622 | unsigned int first_dynamic_global_index = this->first_dynamic_global_index_; | |
1623 | unsigned char* dynamic_view; | |
1624 | if (this->dynamic_offset_ == 0) | |
1625 | dynamic_view = NULL; | |
1626 | else | |
1627 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 1628 | |
61ba1cf9 ILT |
1629 | unsigned char* ps = psyms; |
1630 | for (Symbol_table_type::const_iterator p = this->table_.begin(); | |
1631 | p != this->table_.end(); | |
1632 | ++p) | |
1633 | { | |
1634 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
1635 | ||
9a2d6984 ILT |
1636 | // Possibly warn about unresolved symbols in shared libraries. |
1637 | this->warn_about_undefined_dynobj_symbol(input_objects, sym); | |
e2827e5f | 1638 | |
a3ad94ed | 1639 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
1640 | unsigned int dynsym_index; |
1641 | if (dynamic_view == NULL) | |
1642 | dynsym_index = -1U; | |
1643 | else | |
1644 | dynsym_index = sym->dynsym_index(); | |
1645 | ||
1646 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
1647 | { |
1648 | // This symbol is not included in the output file. | |
1649 | continue; | |
1650 | } | |
16649710 ILT |
1651 | |
1652 | if (sym_index == index) | |
1653 | ++index; | |
1654 | else if (sym_index != -1U) | |
a3ad94ed ILT |
1655 | { |
1656 | // We have already seen this symbol, because it has a | |
1657 | // default version. | |
1658 | gold_assert(sym_index < index); | |
16649710 ILT |
1659 | if (dynsym_index == -1U) |
1660 | continue; | |
1661 | sym_index = -1U; | |
a3ad94ed | 1662 | } |
c06b7b0b | 1663 | |
ead1e424 | 1664 | unsigned int shndx; |
ab5c9e90 | 1665 | typename elfcpp::Elf_types<32>::Elf_Addr value = sym->value(); |
ead1e424 ILT |
1666 | switch (sym->source()) |
1667 | { | |
1668 | case Symbol::FROM_OBJECT: | |
1669 | { | |
16649710 | 1670 | unsigned int in_shndx = sym->shndx(); |
ead1e424 ILT |
1671 | |
1672 | // FIXME: We need some target specific support here. | |
16649710 ILT |
1673 | if (in_shndx >= elfcpp::SHN_LORESERVE |
1674 | && in_shndx != elfcpp::SHN_ABS) | |
ead1e424 | 1675 | { |
75f2446e | 1676 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 1677 | sym->demangled_name().c_str(), in_shndx); |
75f2446e | 1678 | shndx = in_shndx; |
f6ce93d6 | 1679 | } |
ead1e424 ILT |
1680 | else |
1681 | { | |
75f2446e ILT |
1682 | Object* symobj = sym->object(); |
1683 | if (symobj->is_dynamic()) | |
1684 | { | |
1685 | if (sym->needs_dynsym_value()) | |
1686 | value = target->dynsym_value(sym); | |
1687 | shndx = elfcpp::SHN_UNDEF; | |
1688 | } | |
1689 | else if (in_shndx == elfcpp::SHN_UNDEF | |
1690 | || in_shndx == elfcpp::SHN_ABS) | |
1691 | shndx = in_shndx; | |
1692 | else | |
1693 | { | |
1694 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
1695 | off_t secoff; | |
1696 | Output_section* os = relobj->output_section(in_shndx, | |
1697 | &secoff); | |
1698 | gold_assert(os != NULL); | |
1699 | shndx = os->out_shndx(); | |
1700 | } | |
ead1e424 ILT |
1701 | } |
1702 | } | |
1703 | break; | |
1704 | ||
1705 | case Symbol::IN_OUTPUT_DATA: | |
1706 | shndx = sym->output_data()->out_shndx(); | |
1707 | break; | |
1708 | ||
1709 | case Symbol::IN_OUTPUT_SEGMENT: | |
1710 | shndx = elfcpp::SHN_ABS; | |
1711 | break; | |
1712 | ||
1713 | case Symbol::CONSTANT: | |
1714 | shndx = elfcpp::SHN_ABS; | |
1715 | break; | |
1716 | ||
1717 | default: | |
a3ad94ed | 1718 | gold_unreachable(); |
ead1e424 | 1719 | } |
61ba1cf9 | 1720 | |
16649710 ILT |
1721 | if (sym_index != -1U) |
1722 | { | |
6a469986 | 1723 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1724 | sym, sym->value(), shndx, sympool, ps |
6a469986 | 1725 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 ILT |
1726 | ps += sym_size; |
1727 | } | |
61ba1cf9 | 1728 | |
16649710 ILT |
1729 | if (dynsym_index != -1U) |
1730 | { | |
1731 | dynsym_index -= first_dynamic_global_index; | |
1732 | gold_assert(dynsym_index < dynamic_count); | |
1733 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
6a469986 | 1734 | this->sized_write_symbol SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ab5c9e90 | 1735 | sym, value, shndx, dynpool, pd |
6a469986 | 1736 | SELECT_SIZE_ENDIAN(size, big_endian)); |
16649710 | 1737 | } |
61ba1cf9 ILT |
1738 | } |
1739 | ||
a3ad94ed | 1740 | gold_assert(ps - psyms == oview_size); |
c06b7b0b ILT |
1741 | |
1742 | of->write_output_view(this->offset_, oview_size, psyms); | |
16649710 ILT |
1743 | if (dynamic_view != NULL) |
1744 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
1745 | } | |
1746 | ||
1747 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
1748 | // strtab holding the name. | |
1749 | ||
1750 | template<int size, bool big_endian> | |
1751 | void | |
ab5c9e90 ILT |
1752 | Symbol_table::sized_write_symbol( |
1753 | Sized_symbol<size>* sym, | |
1754 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
1755 | unsigned int shndx, | |
1756 | const Stringpool* pool, | |
1757 | unsigned char* p | |
1758 | ACCEPT_SIZE_ENDIAN) const | |
16649710 ILT |
1759 | { |
1760 | elfcpp::Sym_write<size, big_endian> osym(p); | |
1761 | osym.put_st_name(pool->get_offset(sym->name())); | |
ab5c9e90 | 1762 | osym.put_st_value(value); |
16649710 ILT |
1763 | osym.put_st_size(sym->symsize()); |
1764 | osym.put_st_info(elfcpp::elf_st_info(sym->binding(), sym->type())); | |
1765 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); | |
1766 | osym.put_st_shndx(shndx); | |
61ba1cf9 ILT |
1767 | } |
1768 | ||
9a2d6984 ILT |
1769 | // Check for unresolved symbols in shared libraries. This is |
1770 | // controlled by the --allow-shlib-undefined option. | |
1771 | ||
1772 | // We only warn about libraries for which we have seen all the | |
1773 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
1774 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
1775 | // entry, we aren't going to be able to reliably report whether the | |
1776 | // symbol is undefined. | |
1777 | ||
1778 | // We also don't warn about libraries found in the system library | |
1779 | // directory (the directory were we find libc.so); we assume that | |
1780 | // those libraries are OK. This heuristic avoids problems in | |
1781 | // GNU/Linux, in which -ldl can have undefined references satisfied by | |
1782 | // ld-linux.so. | |
1783 | ||
1784 | inline void | |
1785 | Symbol_table::warn_about_undefined_dynobj_symbol( | |
1786 | const Input_objects* input_objects, | |
1787 | Symbol* sym) const | |
1788 | { | |
1789 | if (sym->source() == Symbol::FROM_OBJECT | |
1790 | && sym->object()->is_dynamic() | |
1791 | && sym->shndx() == elfcpp::SHN_UNDEF | |
1792 | && sym->binding() != elfcpp::STB_WEAK | |
1793 | && !parameters->allow_shlib_undefined() | |
1794 | && !input_objects->target()->is_defined_by_abi(sym) | |
1795 | && !input_objects->found_in_system_library_directory(sym->object())) | |
1796 | { | |
1797 | // A very ugly cast. | |
1798 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
1799 | if (!dynobj->has_unknown_needed_entries()) | |
1800 | gold_error(_("%s: undefined reference to '%s'"), | |
a2b1aa12 ILT |
1801 | sym->object()->name().c_str(), |
1802 | sym->demangled_name().c_str()); | |
9a2d6984 ILT |
1803 | } |
1804 | } | |
1805 | ||
a3ad94ed ILT |
1806 | // Write out a section symbol. Return the update offset. |
1807 | ||
1808 | void | |
9025d29d | 1809 | Symbol_table::write_section_symbol(const Output_section *os, |
a3ad94ed ILT |
1810 | Output_file* of, |
1811 | off_t offset) const | |
1812 | { | |
9025d29d | 1813 | if (parameters->get_size() == 32) |
a3ad94ed | 1814 | { |
9025d29d ILT |
1815 | if (parameters->is_big_endian()) |
1816 | { | |
1817 | #ifdef HAVE_TARGET_32_BIG | |
1818 | this->sized_write_section_symbol<32, true>(os, of, offset); | |
1819 | #else | |
1820 | gold_unreachable(); | |
1821 | #endif | |
1822 | } | |
a3ad94ed | 1823 | else |
9025d29d ILT |
1824 | { |
1825 | #ifdef HAVE_TARGET_32_LITTLE | |
1826 | this->sized_write_section_symbol<32, false>(os, of, offset); | |
1827 | #else | |
1828 | gold_unreachable(); | |
1829 | #endif | |
1830 | } | |
a3ad94ed | 1831 | } |
9025d29d | 1832 | else if (parameters->get_size() == 64) |
a3ad94ed | 1833 | { |
9025d29d ILT |
1834 | if (parameters->is_big_endian()) |
1835 | { | |
1836 | #ifdef HAVE_TARGET_64_BIG | |
1837 | this->sized_write_section_symbol<64, true>(os, of, offset); | |
1838 | #else | |
1839 | gold_unreachable(); | |
1840 | #endif | |
1841 | } | |
a3ad94ed | 1842 | else |
9025d29d ILT |
1843 | { |
1844 | #ifdef HAVE_TARGET_64_LITTLE | |
1845 | this->sized_write_section_symbol<64, false>(os, of, offset); | |
1846 | #else | |
1847 | gold_unreachable(); | |
1848 | #endif | |
1849 | } | |
a3ad94ed ILT |
1850 | } |
1851 | else | |
1852 | gold_unreachable(); | |
1853 | } | |
1854 | ||
1855 | // Write out a section symbol, specialized for size and endianness. | |
1856 | ||
1857 | template<int size, bool big_endian> | |
1858 | void | |
1859 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
1860 | Output_file* of, | |
1861 | off_t offset) const | |
1862 | { | |
1863 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1864 | ||
1865 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
1866 | ||
1867 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
1868 | osym.put_st_name(0); | |
1869 | osym.put_st_value(os->address()); | |
1870 | osym.put_st_size(0); | |
1871 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
1872 | elfcpp::STT_SECTION)); | |
1873 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
1874 | osym.put_st_shndx(os->out_shndx()); | |
1875 | ||
1876 | of->write_output_view(offset, sym_size, pov); | |
1877 | } | |
1878 | ||
ff541f30 ILT |
1879 | // We check for ODR violations by looking for symbols with the same |
1880 | // name for which the debugging information reports that they were | |
1881 | // defined in different source locations. When comparing the source | |
1882 | // location, we consider instances with the same base filename and | |
1883 | // line number to be the same. This is because different object | |
1884 | // files/shared libraries can include the same header file using | |
1885 | // different paths, and we don't want to report an ODR violation in | |
1886 | // that case. | |
1887 | ||
1888 | // This struct is used to compare line information, as returned by | |
1889 | // Dwarf_line_info::one_addr2line. It imlements a < comparison | |
1890 | // operator used with std::set. | |
1891 | ||
1892 | struct Odr_violation_compare | |
1893 | { | |
1894 | bool | |
1895 | operator()(const std::string& s1, const std::string& s2) const | |
1896 | { | |
1897 | std::string::size_type pos1 = s1.rfind('/'); | |
1898 | std::string::size_type pos2 = s2.rfind('/'); | |
1899 | if (pos1 == std::string::npos | |
1900 | || pos2 == std::string::npos) | |
1901 | return s1 < s2; | |
1902 | return s1.compare(pos1, std::string::npos, | |
1903 | s2, pos2, std::string::npos) < 0; | |
1904 | } | |
1905 | }; | |
1906 | ||
70e654ba ILT |
1907 | // Check candidate_odr_violations_ to find symbols with the same name |
1908 | // but apparently different definitions (different source-file/line-no). | |
1909 | ||
1910 | void | |
78f15696 | 1911 | Symbol_table::detect_odr_violations(const char* output_file_name) const |
70e654ba ILT |
1912 | { |
1913 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
1914 | it != candidate_odr_violations_.end(); | |
1915 | ++it) | |
1916 | { | |
1917 | const char* symbol_name = it->first; | |
1918 | // We use a sorted set so the output is deterministic. | |
ff541f30 | 1919 | std::set<std::string, Odr_violation_compare> line_nums; |
70e654ba | 1920 | |
b01c0a4a ILT |
1921 | for (Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator |
1922 | locs = it->second.begin(); | |
1923 | locs != it->second.end(); | |
1924 | ++locs) | |
70e654ba ILT |
1925 | { |
1926 | // We need to lock the object in order to read it. This | |
1927 | // means that we can not run inside a Task. If we want to | |
1928 | // run this in a Task for better performance, we will need | |
1929 | // one Task for object, plus appropriate locking to ensure | |
1930 | // that we don't conflict with other uses of the object. | |
1931 | locs->object->lock(); | |
a55ce7fe ILT |
1932 | std::string lineno = Dwarf_line_info::one_addr2line( |
1933 | locs->object, locs->shndx, locs->offset); | |
70e654ba | 1934 | locs->object->unlock(); |
70e654ba ILT |
1935 | if (!lineno.empty()) |
1936 | line_nums.insert(lineno); | |
1937 | } | |
1938 | ||
1939 | if (line_nums.size() > 1) | |
1940 | { | |
dd8670e5 | 1941 | gold_warning(_("while linking %s: symbol '%s' defined in multiple " |
78f15696 | 1942 | "places (possible ODR violation):"), |
a2b1aa12 | 1943 | output_file_name, demangle(symbol_name).c_str()); |
70e654ba ILT |
1944 | for (std::set<std::string>::const_iterator it2 = line_nums.begin(); |
1945 | it2 != line_nums.end(); | |
1946 | ++it2) | |
1947 | fprintf(stderr, " %s\n", it2->c_str()); | |
1948 | } | |
1949 | } | |
1950 | } | |
1951 | ||
f6ce93d6 ILT |
1952 | // Warnings functions. |
1953 | ||
1954 | // Add a new warning. | |
1955 | ||
1956 | void | |
1957 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
1958 | unsigned int shndx) | |
1959 | { | |
1960 | name = symtab->canonicalize_name(name); | |
1961 | this->warnings_[name].set(obj, shndx); | |
1962 | } | |
1963 | ||
1964 | // Look through the warnings and mark the symbols for which we should | |
1965 | // warn. This is called during Layout::finalize when we know the | |
1966 | // sources for all the symbols. | |
1967 | ||
1968 | void | |
1969 | Warnings::note_warnings(Symbol_table* symtab) | |
1970 | { | |
1971 | for (Warning_table::iterator p = this->warnings_.begin(); | |
1972 | p != this->warnings_.end(); | |
1973 | ++p) | |
1974 | { | |
1975 | Symbol* sym = symtab->lookup(p->first, NULL); | |
1976 | if (sym != NULL | |
1977 | && sym->source() == Symbol::FROM_OBJECT | |
1978 | && sym->object() == p->second.object) | |
1979 | { | |
1980 | sym->set_has_warning(); | |
1981 | ||
1982 | // Read the section contents to get the warning text. It | |
1983 | // would be nicer if we only did this if we have to actually | |
1984 | // issue a warning. Unfortunately, warnings are issued as | |
1985 | // we relocate sections. That means that we can not lock | |
1986 | // the object then, as we might try to issue the same | |
1987 | // warning multiple times simultaneously. | |
645f8123 ILT |
1988 | { |
1989 | Task_locker_obj<Object> tl(*p->second.object); | |
1990 | const unsigned char* c; | |
1991 | off_t len; | |
9eb9fa57 ILT |
1992 | c = p->second.object->section_contents(p->second.shndx, &len, |
1993 | false); | |
645f8123 ILT |
1994 | p->second.set_text(reinterpret_cast<const char*>(c), len); |
1995 | } | |
f6ce93d6 ILT |
1996 | } |
1997 | } | |
1998 | } | |
1999 | ||
2000 | // Issue a warning. This is called when we see a relocation against a | |
2001 | // symbol for which has a warning. | |
2002 | ||
75f2446e | 2003 | template<int size, bool big_endian> |
f6ce93d6 | 2004 | void |
75f2446e ILT |
2005 | Warnings::issue_warning(const Symbol* sym, |
2006 | const Relocate_info<size, big_endian>* relinfo, | |
2007 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 2008 | { |
a3ad94ed | 2009 | gold_assert(sym->has_warning()); |
f6ce93d6 | 2010 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 2011 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
2012 | gold_warning_at_location(relinfo, relnum, reloffset, |
2013 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
2014 | } |
2015 | ||
14bfc3f5 ILT |
2016 | // Instantiate the templates we need. We could use the configure |
2017 | // script to restrict this to only the ones needed for implemented | |
2018 | // targets. | |
2019 | ||
193a53d9 | 2020 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
2021 | template |
2022 | void | |
193a53d9 ILT |
2023 | Symbol_table::add_from_relobj<32, false>( |
2024 | Sized_relobj<32, false>* relobj, | |
f6ce93d6 | 2025 | const unsigned char* syms, |
14bfc3f5 ILT |
2026 | size_t count, |
2027 | const char* sym_names, | |
2028 | size_t sym_name_size, | |
730cdc88 | 2029 | Sized_relobj<32, true>::Symbols* sympointers); |
193a53d9 | 2030 | #endif |
14bfc3f5 | 2031 | |
193a53d9 | 2032 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
2033 | template |
2034 | void | |
193a53d9 ILT |
2035 | Symbol_table::add_from_relobj<32, true>( |
2036 | Sized_relobj<32, true>* relobj, | |
f6ce93d6 | 2037 | const unsigned char* syms, |
14bfc3f5 ILT |
2038 | size_t count, |
2039 | const char* sym_names, | |
2040 | size_t sym_name_size, | |
730cdc88 | 2041 | Sized_relobj<32, false>::Symbols* sympointers); |
193a53d9 | 2042 | #endif |
14bfc3f5 | 2043 | |
193a53d9 | 2044 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
2045 | template |
2046 | void | |
193a53d9 ILT |
2047 | Symbol_table::add_from_relobj<64, false>( |
2048 | Sized_relobj<64, false>* relobj, | |
f6ce93d6 | 2049 | const unsigned char* syms, |
14bfc3f5 ILT |
2050 | size_t count, |
2051 | const char* sym_names, | |
2052 | size_t sym_name_size, | |
730cdc88 | 2053 | Sized_relobj<64, true>::Symbols* sympointers); |
193a53d9 | 2054 | #endif |
14bfc3f5 | 2055 | |
193a53d9 | 2056 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
2057 | template |
2058 | void | |
193a53d9 ILT |
2059 | Symbol_table::add_from_relobj<64, true>( |
2060 | Sized_relobj<64, true>* relobj, | |
f6ce93d6 | 2061 | const unsigned char* syms, |
14bfc3f5 ILT |
2062 | size_t count, |
2063 | const char* sym_names, | |
2064 | size_t sym_name_size, | |
730cdc88 | 2065 | Sized_relobj<64, false>::Symbols* sympointers); |
193a53d9 | 2066 | #endif |
14bfc3f5 | 2067 | |
193a53d9 | 2068 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
2069 | template |
2070 | void | |
193a53d9 ILT |
2071 | Symbol_table::add_from_dynobj<32, false>( |
2072 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
2073 | const unsigned char* syms, |
2074 | size_t count, | |
2075 | const char* sym_names, | |
2076 | size_t sym_name_size, | |
2077 | const unsigned char* versym, | |
2078 | size_t versym_size, | |
2079 | const std::vector<const char*>* version_map); | |
193a53d9 | 2080 | #endif |
dbe717ef | 2081 | |
193a53d9 | 2082 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
2083 | template |
2084 | void | |
193a53d9 ILT |
2085 | Symbol_table::add_from_dynobj<32, true>( |
2086 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
2087 | const unsigned char* syms, |
2088 | size_t count, | |
2089 | const char* sym_names, | |
2090 | size_t sym_name_size, | |
2091 | const unsigned char* versym, | |
2092 | size_t versym_size, | |
2093 | const std::vector<const char*>* version_map); | |
193a53d9 | 2094 | #endif |
dbe717ef | 2095 | |
193a53d9 | 2096 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
2097 | template |
2098 | void | |
193a53d9 ILT |
2099 | Symbol_table::add_from_dynobj<64, false>( |
2100 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
2101 | const unsigned char* syms, |
2102 | size_t count, | |
2103 | const char* sym_names, | |
2104 | size_t sym_name_size, | |
2105 | const unsigned char* versym, | |
2106 | size_t versym_size, | |
2107 | const std::vector<const char*>* version_map); | |
193a53d9 | 2108 | #endif |
dbe717ef | 2109 | |
193a53d9 | 2110 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
2111 | template |
2112 | void | |
193a53d9 ILT |
2113 | Symbol_table::add_from_dynobj<64, true>( |
2114 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
2115 | const unsigned char* syms, |
2116 | size_t count, | |
2117 | const char* sym_names, | |
2118 | size_t sym_name_size, | |
2119 | const unsigned char* versym, | |
2120 | size_t versym_size, | |
2121 | const std::vector<const char*>* version_map); | |
193a53d9 | 2122 | #endif |
dbe717ef | 2123 | |
46fe1623 ILT |
2124 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
2125 | template | |
2126 | void | |
2127 | Symbol_table::define_with_copy_reloc<32>(const Target* target, | |
2128 | Sized_symbol<32>* sym, | |
2129 | Output_data* posd, uint64_t value); | |
2130 | #endif | |
2131 | ||
2132 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
2133 | template | |
2134 | void | |
2135 | Symbol_table::define_with_copy_reloc<64>(const Target* target, | |
2136 | Sized_symbol<64>* sym, | |
2137 | Output_data* posd, uint64_t value); | |
2138 | #endif | |
2139 | ||
75f2446e ILT |
2140 | #ifdef HAVE_TARGET_32_LITTLE |
2141 | template | |
2142 | void | |
2143 | Warnings::issue_warning<32, false>(const Symbol* sym, | |
2144 | const Relocate_info<32, false>* relinfo, | |
2145 | size_t relnum, off_t reloffset) const; | |
2146 | #endif | |
2147 | ||
2148 | #ifdef HAVE_TARGET_32_BIG | |
2149 | template | |
2150 | void | |
2151 | Warnings::issue_warning<32, true>(const Symbol* sym, | |
2152 | const Relocate_info<32, true>* relinfo, | |
2153 | size_t relnum, off_t reloffset) const; | |
2154 | #endif | |
2155 | ||
2156 | #ifdef HAVE_TARGET_64_LITTLE | |
2157 | template | |
2158 | void | |
2159 | Warnings::issue_warning<64, false>(const Symbol* sym, | |
2160 | const Relocate_info<64, false>* relinfo, | |
2161 | size_t relnum, off_t reloffset) const; | |
2162 | #endif | |
2163 | ||
2164 | #ifdef HAVE_TARGET_64_BIG | |
2165 | template | |
2166 | void | |
2167 | Warnings::issue_warning<64, true>(const Symbol* sym, | |
2168 | const Relocate_info<64, true>* relinfo, | |
2169 | size_t relnum, off_t reloffset) const; | |
2170 | #endif | |
2171 | ||
14bfc3f5 | 2172 | } // End namespace gold. |