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14bfc3f5 ILT |
1 | // symtab.cc -- the gold symbol table |
2 | ||
0f3b89d8 | 3 | // Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
6cb15b7f ILT |
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 | ||
04bf7072 | 25 | #include <cstring> |
14bfc3f5 | 26 | #include <stdint.h> |
04bf7072 | 27 | #include <algorithm> |
70e654ba | 28 | #include <set> |
14bfc3f5 ILT |
29 | #include <string> |
30 | #include <utility> | |
a2b1aa12 | 31 | #include "demangle.h" |
14bfc3f5 | 32 | |
6d03d481 | 33 | #include "gc.h" |
14bfc3f5 | 34 | #include "object.h" |
70e654ba | 35 | #include "dwarf_reader.h" |
dbe717ef | 36 | #include "dynobj.h" |
75f65a3e | 37 | #include "output.h" |
61ba1cf9 | 38 | #include "target.h" |
645f8123 | 39 | #include "workqueue.h" |
14bfc3f5 | 40 | #include "symtab.h" |
88a4108b | 41 | #include "script.h" |
89fc3421 | 42 | #include "plugin.h" |
cdc29364 | 43 | #include "incremental.h" |
14bfc3f5 ILT |
44 | |
45 | namespace gold | |
46 | { | |
47 | ||
48 | // Class Symbol. | |
49 | ||
ead1e424 ILT |
50 | // Initialize fields in Symbol. This initializes everything except u_ |
51 | // and source_. | |
14bfc3f5 | 52 | |
14bfc3f5 | 53 | void |
2ea97941 ILT |
54 | Symbol::init_fields(const char* name, const char* version, |
55 | elfcpp::STT type, elfcpp::STB binding, | |
56 | elfcpp::STV visibility, unsigned char nonvis) | |
14bfc3f5 | 57 | { |
2ea97941 ILT |
58 | this->name_ = name; |
59 | this->version_ = version; | |
c06b7b0b ILT |
60 | this->symtab_index_ = 0; |
61 | this->dynsym_index_ = 0; | |
0a65a3a7 | 62 | this->got_offsets_.init(); |
880cd20d | 63 | this->plt_offset_ = -1U; |
2ea97941 ILT |
64 | this->type_ = type; |
65 | this->binding_ = binding; | |
66 | this->visibility_ = visibility; | |
67 | this->nonvis_ = nonvis; | |
1564db8d ILT |
68 | this->is_def_ = false; |
69 | this->is_forwarder_ = false; | |
aeddab66 | 70 | this->has_alias_ = false; |
c06b7b0b | 71 | this->needs_dynsym_entry_ = false; |
008db82e | 72 | this->in_reg_ = false; |
ead1e424 | 73 | this->in_dyn_ = false; |
f6ce93d6 | 74 | this->has_warning_ = false; |
46fe1623 | 75 | this->is_copied_from_dynobj_ = false; |
55a93433 | 76 | this->is_forced_local_ = false; |
d491d34e | 77 | this->is_ordinary_shndx_ = false; |
89fc3421 | 78 | this->in_real_elf_ = false; |
880cd20d | 79 | this->is_defined_in_discarded_section_ = false; |
ce279a62 CC |
80 | this->undef_binding_set_ = false; |
81 | this->undef_binding_weak_ = false; | |
5146f448 | 82 | this->is_predefined_ = false; |
ead1e424 ILT |
83 | } |
84 | ||
a2b1aa12 ILT |
85 | // Return the demangled version of the symbol's name, but only |
86 | // if the --demangle flag was set. | |
87 | ||
88 | static std::string | |
2ea97941 | 89 | demangle(const char* name) |
a2b1aa12 | 90 | { |
086a1841 | 91 | if (!parameters->options().do_demangle()) |
2ea97941 | 92 | return name; |
ff541f30 | 93 | |
a2b1aa12 ILT |
94 | // cplus_demangle allocates memory for the result it returns, |
95 | // and returns NULL if the name is already demangled. | |
2ea97941 | 96 | char* demangled_name = cplus_demangle(name, DMGL_ANSI | DMGL_PARAMS); |
a2b1aa12 | 97 | if (demangled_name == NULL) |
2ea97941 | 98 | return name; |
a2b1aa12 ILT |
99 | |
100 | std::string retval(demangled_name); | |
101 | free(demangled_name); | |
102 | return retval; | |
103 | } | |
104 | ||
105 | std::string | |
106 | Symbol::demangled_name() const | |
107 | { | |
ff541f30 | 108 | return demangle(this->name()); |
a2b1aa12 ILT |
109 | } |
110 | ||
ead1e424 ILT |
111 | // Initialize the fields in the base class Symbol for SYM in OBJECT. |
112 | ||
113 | template<int size, bool big_endian> | |
114 | void | |
2ea97941 | 115 | Symbol::init_base_object(const char* name, const char* version, Object* object, |
f3e9c5c5 ILT |
116 | const elfcpp::Sym<size, big_endian>& sym, |
117 | unsigned int st_shndx, bool is_ordinary) | |
ead1e424 | 118 | { |
2ea97941 | 119 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), |
ead1e424 | 120 | sym.get_st_visibility(), sym.get_st_nonvis()); |
2ea97941 | 121 | this->u_.from_object.object = object; |
d491d34e ILT |
122 | this->u_.from_object.shndx = st_shndx; |
123 | this->is_ordinary_shndx_ = is_ordinary; | |
ead1e424 | 124 | this->source_ = FROM_OBJECT; |
2ea97941 ILT |
125 | this->in_reg_ = !object->is_dynamic(); |
126 | this->in_dyn_ = object->is_dynamic(); | |
127 | this->in_real_elf_ = object->pluginobj() == NULL; | |
14bfc3f5 ILT |
128 | } |
129 | ||
ead1e424 ILT |
130 | // Initialize the fields in the base class Symbol for a symbol defined |
131 | // in an Output_data. | |
132 | ||
133 | void | |
2ea97941 ILT |
134 | Symbol::init_base_output_data(const char* name, const char* version, |
135 | Output_data* od, elfcpp::STT type, | |
136 | elfcpp::STB binding, elfcpp::STV visibility, | |
5146f448 CC |
137 | unsigned char nonvis, bool offset_is_from_end, |
138 | bool is_predefined) | |
ead1e424 | 139 | { |
2ea97941 | 140 | this->init_fields(name, version, type, binding, visibility, nonvis); |
ead1e424 | 141 | this->u_.in_output_data.output_data = od; |
2ea97941 | 142 | this->u_.in_output_data.offset_is_from_end = offset_is_from_end; |
ead1e424 | 143 | this->source_ = IN_OUTPUT_DATA; |
008db82e | 144 | this->in_reg_ = true; |
89fc3421 | 145 | this->in_real_elf_ = true; |
5146f448 | 146 | this->is_predefined_ = is_predefined; |
ead1e424 ILT |
147 | } |
148 | ||
149 | // Initialize the fields in the base class Symbol for a symbol defined | |
150 | // in an Output_segment. | |
151 | ||
152 | void | |
2ea97941 ILT |
153 | Symbol::init_base_output_segment(const char* name, const char* version, |
154 | Output_segment* os, elfcpp::STT type, | |
155 | elfcpp::STB binding, elfcpp::STV visibility, | |
156 | unsigned char nonvis, | |
5146f448 CC |
157 | Segment_offset_base offset_base, |
158 | bool is_predefined) | |
ead1e424 | 159 | { |
2ea97941 | 160 | this->init_fields(name, version, type, binding, visibility, nonvis); |
ead1e424 | 161 | this->u_.in_output_segment.output_segment = os; |
2ea97941 | 162 | this->u_.in_output_segment.offset_base = offset_base; |
ead1e424 | 163 | this->source_ = IN_OUTPUT_SEGMENT; |
008db82e | 164 | this->in_reg_ = true; |
89fc3421 | 165 | this->in_real_elf_ = true; |
5146f448 | 166 | this->is_predefined_ = is_predefined; |
ead1e424 ILT |
167 | } |
168 | ||
169 | // Initialize the fields in the base class Symbol for a symbol defined | |
170 | // as a constant. | |
171 | ||
172 | void | |
2ea97941 ILT |
173 | Symbol::init_base_constant(const char* name, const char* version, |
174 | elfcpp::STT type, elfcpp::STB binding, | |
5146f448 CC |
175 | elfcpp::STV visibility, unsigned char nonvis, |
176 | bool is_predefined) | |
f3e9c5c5 | 177 | { |
2ea97941 | 178 | this->init_fields(name, version, type, binding, visibility, nonvis); |
f3e9c5c5 ILT |
179 | this->source_ = IS_CONSTANT; |
180 | this->in_reg_ = true; | |
89fc3421 | 181 | this->in_real_elf_ = true; |
5146f448 | 182 | this->is_predefined_ = is_predefined; |
f3e9c5c5 ILT |
183 | } |
184 | ||
185 | // Initialize the fields in the base class Symbol for an undefined | |
186 | // symbol. | |
187 | ||
188 | void | |
2ea97941 ILT |
189 | Symbol::init_base_undefined(const char* name, const char* version, |
190 | elfcpp::STT type, elfcpp::STB binding, | |
191 | elfcpp::STV visibility, unsigned char nonvis) | |
ead1e424 | 192 | { |
2ea97941 | 193 | this->init_fields(name, version, type, binding, visibility, nonvis); |
d7ab2a47 | 194 | this->dynsym_index_ = -1U; |
f3e9c5c5 | 195 | this->source_ = IS_UNDEFINED; |
008db82e | 196 | this->in_reg_ = true; |
89fc3421 | 197 | this->in_real_elf_ = true; |
ead1e424 ILT |
198 | } |
199 | ||
c7912668 ILT |
200 | // Allocate a common symbol in the base. |
201 | ||
202 | void | |
203 | Symbol::allocate_base_common(Output_data* od) | |
204 | { | |
205 | gold_assert(this->is_common()); | |
206 | this->source_ = IN_OUTPUT_DATA; | |
207 | this->u_.in_output_data.output_data = od; | |
208 | this->u_.in_output_data.offset_is_from_end = false; | |
209 | } | |
210 | ||
ead1e424 | 211 | // Initialize the fields in Sized_symbol for SYM in OBJECT. |
14bfc3f5 ILT |
212 | |
213 | template<int size> | |
214 | template<bool big_endian> | |
215 | void | |
2ea97941 ILT |
216 | Sized_symbol<size>::init_object(const char* name, const char* version, |
217 | Object* object, | |
f3e9c5c5 ILT |
218 | const elfcpp::Sym<size, big_endian>& sym, |
219 | unsigned int st_shndx, bool is_ordinary) | |
14bfc3f5 | 220 | { |
2ea97941 | 221 | this->init_base_object(name, version, object, sym, st_shndx, is_ordinary); |
14bfc3f5 | 222 | this->value_ = sym.get_st_value(); |
ead1e424 ILT |
223 | this->symsize_ = sym.get_st_size(); |
224 | } | |
225 | ||
226 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
227 | // Output_data. | |
228 | ||
229 | template<int size> | |
230 | void | |
2ea97941 ILT |
231 | Sized_symbol<size>::init_output_data(const char* name, const char* version, |
232 | Output_data* od, Value_type value, | |
233 | Size_type symsize, elfcpp::STT type, | |
234 | elfcpp::STB binding, | |
235 | elfcpp::STV visibility, | |
236 | unsigned char nonvis, | |
5146f448 CC |
237 | bool offset_is_from_end, |
238 | bool is_predefined) | |
ead1e424 | 239 | { |
2ea97941 | 240 | this->init_base_output_data(name, version, od, type, binding, visibility, |
5146f448 | 241 | nonvis, offset_is_from_end, is_predefined); |
2ea97941 ILT |
242 | this->value_ = value; |
243 | this->symsize_ = symsize; | |
ead1e424 ILT |
244 | } |
245 | ||
246 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
247 | // Output_segment. | |
248 | ||
249 | template<int size> | |
250 | void | |
2ea97941 ILT |
251 | Sized_symbol<size>::init_output_segment(const char* name, const char* version, |
252 | Output_segment* os, Value_type value, | |
253 | Size_type symsize, elfcpp::STT type, | |
254 | elfcpp::STB binding, | |
255 | elfcpp::STV visibility, | |
256 | unsigned char nonvis, | |
5146f448 CC |
257 | Segment_offset_base offset_base, |
258 | bool is_predefined) | |
ead1e424 | 259 | { |
2ea97941 | 260 | this->init_base_output_segment(name, version, os, type, binding, visibility, |
5146f448 | 261 | nonvis, offset_base, is_predefined); |
2ea97941 ILT |
262 | this->value_ = value; |
263 | this->symsize_ = symsize; | |
ead1e424 ILT |
264 | } |
265 | ||
266 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
267 | // constant. | |
268 | ||
269 | template<int size> | |
270 | void | |
2ea97941 ILT |
271 | Sized_symbol<size>::init_constant(const char* name, const char* version, |
272 | Value_type value, Size_type symsize, | |
273 | elfcpp::STT type, elfcpp::STB binding, | |
5146f448 CC |
274 | elfcpp::STV visibility, unsigned char nonvis, |
275 | bool is_predefined) | |
ead1e424 | 276 | { |
5146f448 CC |
277 | this->init_base_constant(name, version, type, binding, visibility, nonvis, |
278 | is_predefined); | |
2ea97941 ILT |
279 | this->value_ = value; |
280 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
281 | } |
282 | ||
f3e9c5c5 ILT |
283 | // Initialize the fields in Sized_symbol for an undefined symbol. |
284 | ||
285 | template<int size> | |
286 | void | |
2ea97941 ILT |
287 | Sized_symbol<size>::init_undefined(const char* name, const char* version, |
288 | elfcpp::STT type, elfcpp::STB binding, | |
289 | elfcpp::STV visibility, unsigned char nonvis) | |
f3e9c5c5 | 290 | { |
2ea97941 | 291 | this->init_base_undefined(name, version, type, binding, visibility, nonvis); |
f3e9c5c5 ILT |
292 | this->value_ = 0; |
293 | this->symsize_ = 0; | |
294 | } | |
295 | ||
6d1c4efb ILT |
296 | // Return an allocated string holding the symbol's name as |
297 | // name@version. This is used for relocatable links. | |
298 | ||
299 | std::string | |
300 | Symbol::versioned_name() const | |
301 | { | |
302 | gold_assert(this->version_ != NULL); | |
303 | std::string ret = this->name_; | |
304 | ret.push_back('@'); | |
305 | if (this->is_def_) | |
306 | ret.push_back('@'); | |
307 | ret += this->version_; | |
308 | return ret; | |
309 | } | |
310 | ||
8a5e3e08 ILT |
311 | // Return true if SHNDX represents a common symbol. |
312 | ||
313 | bool | |
2ea97941 | 314 | Symbol::is_common_shndx(unsigned int shndx) |
8a5e3e08 | 315 | { |
2ea97941 ILT |
316 | return (shndx == elfcpp::SHN_COMMON |
317 | || shndx == parameters->target().small_common_shndx() | |
318 | || shndx == parameters->target().large_common_shndx()); | |
8a5e3e08 ILT |
319 | } |
320 | ||
c7912668 ILT |
321 | // Allocate a common symbol. |
322 | ||
323 | template<int size> | |
324 | void | |
2ea97941 | 325 | Sized_symbol<size>::allocate_common(Output_data* od, Value_type value) |
c7912668 ILT |
326 | { |
327 | this->allocate_base_common(od); | |
2ea97941 | 328 | this->value_ = value; |
c7912668 ILT |
329 | } |
330 | ||
c82fbeee CS |
331 | // The ""'s around str ensure str is a string literal, so sizeof works. |
332 | #define strprefix(var, str) (strncmp(var, str, sizeof("" str "") - 1) == 0) | |
333 | ||
436ca963 ILT |
334 | // Return true if this symbol should be added to the dynamic symbol |
335 | // table. | |
336 | ||
337 | inline bool | |
ce97fa81 | 338 | Symbol::should_add_dynsym_entry(Symbol_table* symtab) const |
436ca963 | 339 | { |
badc8139 RÁE |
340 | // If the symbol is only present on plugin files, the plugin decided we |
341 | // don't need it. | |
342 | if (!this->in_real_elf()) | |
343 | return false; | |
344 | ||
436ca963 ILT |
345 | // If the symbol is used by a dynamic relocation, we need to add it. |
346 | if (this->needs_dynsym_entry()) | |
347 | return true; | |
348 | ||
6d03d481 ST |
349 | // If this symbol's section is not added, the symbol need not be added. |
350 | // The section may have been GCed. Note that export_dynamic is being | |
351 | // overridden here. This should not be done for shared objects. | |
352 | if (parameters->options().gc_sections() | |
353 | && !parameters->options().shared() | |
354 | && this->source() == Symbol::FROM_OBJECT | |
355 | && !this->object()->is_dynamic()) | |
356 | { | |
357 | Relobj* relobj = static_cast<Relobj*>(this->object()); | |
358 | bool is_ordinary; | |
2ea97941 ILT |
359 | unsigned int shndx = this->shndx(&is_ordinary); |
360 | if (is_ordinary && shndx != elfcpp::SHN_UNDEF | |
ce97fa81 ST |
361 | && !relobj->is_section_included(shndx) |
362 | && !symtab->is_section_folded(relobj, shndx)) | |
6d03d481 ST |
363 | return false; |
364 | } | |
365 | ||
55a93433 ILT |
366 | // If the symbol was forced local in a version script, do not add it. |
367 | if (this->is_forced_local()) | |
368 | return false; | |
369 | ||
c82fbeee CS |
370 | // If the symbol was forced dynamic in a --dynamic-list file, add it. |
371 | if (parameters->options().in_dynamic_list(this->name())) | |
372 | return true; | |
373 | ||
374 | // If dynamic-list-data was specified, add any STT_OBJECT. | |
375 | if (parameters->options().dynamic_list_data() | |
376 | && !this->is_from_dynobj() | |
377 | && this->type() == elfcpp::STT_OBJECT) | |
378 | return true; | |
379 | ||
380 | // If --dynamic-list-cpp-new was specified, add any new/delete symbol. | |
381 | // If --dynamic-list-cpp-typeinfo was specified, add any typeinfo symbols. | |
382 | if ((parameters->options().dynamic_list_cpp_new() | |
383 | || parameters->options().dynamic_list_cpp_typeinfo()) | |
384 | && !this->is_from_dynobj()) | |
385 | { | |
386 | // TODO(csilvers): We could probably figure out if we're an operator | |
387 | // new/delete or typeinfo without the need to demangle. | |
2ea97941 ILT |
388 | char* demangled_name = cplus_demangle(this->name(), |
389 | DMGL_ANSI | DMGL_PARAMS); | |
390 | if (demangled_name == NULL) | |
c82fbeee CS |
391 | { |
392 | // Not a C++ symbol, so it can't satisfy these flags | |
393 | } | |
394 | else if (parameters->options().dynamic_list_cpp_new() | |
2ea97941 ILT |
395 | && (strprefix(demangled_name, "operator new") |
396 | || strprefix(demangled_name, "operator delete"))) | |
c82fbeee | 397 | { |
2ea97941 | 398 | free(demangled_name); |
c82fbeee CS |
399 | return true; |
400 | } | |
401 | else if (parameters->options().dynamic_list_cpp_typeinfo() | |
2ea97941 ILT |
402 | && (strprefix(demangled_name, "typeinfo name for") |
403 | || strprefix(demangled_name, "typeinfo for"))) | |
c82fbeee | 404 | { |
2ea97941 | 405 | free(demangled_name); |
c82fbeee CS |
406 | return true; |
407 | } | |
408 | else | |
2ea97941 | 409 | free(demangled_name); |
c82fbeee CS |
410 | } |
411 | ||
436ca963 ILT |
412 | // If exporting all symbols or building a shared library, |
413 | // and the symbol is defined in a regular object and is | |
414 | // externally visible, we need to add it. | |
8851ecca | 415 | if ((parameters->options().export_dynamic() || parameters->options().shared()) |
436ca963 ILT |
416 | && !this->is_from_dynobj() |
417 | && this->is_externally_visible()) | |
418 | return true; | |
419 | ||
420 | return false; | |
421 | } | |
422 | ||
b3b74ddc ILT |
423 | // Return true if the final value of this symbol is known at link |
424 | // time. | |
425 | ||
426 | bool | |
427 | Symbol::final_value_is_known() const | |
428 | { | |
429 | // If we are not generating an executable, then no final values are | |
430 | // known, since they will change at runtime. | |
374ad285 ILT |
431 | if (parameters->options().output_is_position_independent() |
432 | || parameters->options().relocatable()) | |
b3b74ddc ILT |
433 | return false; |
434 | ||
f3e9c5c5 ILT |
435 | // If the symbol is not from an object file, and is not undefined, |
436 | // then it is defined, and known. | |
b3b74ddc | 437 | if (this->source_ != FROM_OBJECT) |
f3e9c5c5 ILT |
438 | { |
439 | if (this->source_ != IS_UNDEFINED) | |
440 | return true; | |
441 | } | |
442 | else | |
443 | { | |
444 | // If the symbol is from a dynamic object, then the final value | |
445 | // is not known. | |
446 | if (this->object()->is_dynamic()) | |
447 | return false; | |
b3b74ddc | 448 | |
f3e9c5c5 ILT |
449 | // If the symbol is not undefined (it is defined or common), |
450 | // then the final value is known. | |
451 | if (!this->is_undefined()) | |
452 | return true; | |
453 | } | |
b3b74ddc ILT |
454 | |
455 | // If the symbol is undefined, then whether the final value is known | |
456 | // depends on whether we are doing a static link. If we are doing a | |
457 | // dynamic link, then the final value could be filled in at runtime. | |
458 | // This could reasonably be the case for a weak undefined symbol. | |
459 | return parameters->doing_static_link(); | |
460 | } | |
461 | ||
77e65537 | 462 | // Return the output section where this symbol is defined. |
a445fddf | 463 | |
77e65537 ILT |
464 | Output_section* |
465 | Symbol::output_section() const | |
a445fddf ILT |
466 | { |
467 | switch (this->source_) | |
468 | { | |
469 | case FROM_OBJECT: | |
77e65537 | 470 | { |
2ea97941 ILT |
471 | unsigned int shndx = this->u_.from_object.shndx; |
472 | if (shndx != elfcpp::SHN_UNDEF && this->is_ordinary_shndx_) | |
77e65537 ILT |
473 | { |
474 | gold_assert(!this->u_.from_object.object->is_dynamic()); | |
89fc3421 | 475 | gold_assert(this->u_.from_object.object->pluginobj() == NULL); |
77e65537 | 476 | Relobj* relobj = static_cast<Relobj*>(this->u_.from_object.object); |
2ea97941 | 477 | return relobj->output_section(shndx); |
77e65537 ILT |
478 | } |
479 | return NULL; | |
480 | } | |
481 | ||
a445fddf | 482 | case IN_OUTPUT_DATA: |
77e65537 ILT |
483 | return this->u_.in_output_data.output_data->output_section(); |
484 | ||
a445fddf | 485 | case IN_OUTPUT_SEGMENT: |
f3e9c5c5 ILT |
486 | case IS_CONSTANT: |
487 | case IS_UNDEFINED: | |
77e65537 ILT |
488 | return NULL; |
489 | ||
490 | default: | |
491 | gold_unreachable(); | |
492 | } | |
493 | } | |
494 | ||
495 | // Set the symbol's output section. This is used for symbols defined | |
496 | // in scripts. This should only be called after the symbol table has | |
497 | // been finalized. | |
498 | ||
499 | void | |
500 | Symbol::set_output_section(Output_section* os) | |
501 | { | |
502 | switch (this->source_) | |
503 | { | |
504 | case FROM_OBJECT: | |
505 | case IN_OUTPUT_DATA: | |
506 | gold_assert(this->output_section() == os); | |
507 | break; | |
f3e9c5c5 | 508 | case IS_CONSTANT: |
77e65537 ILT |
509 | this->source_ = IN_OUTPUT_DATA; |
510 | this->u_.in_output_data.output_data = os; | |
511 | this->u_.in_output_data.offset_is_from_end = false; | |
512 | break; | |
513 | case IN_OUTPUT_SEGMENT: | |
f3e9c5c5 | 514 | case IS_UNDEFINED: |
a445fddf ILT |
515 | default: |
516 | gold_unreachable(); | |
517 | } | |
518 | } | |
519 | ||
14bfc3f5 ILT |
520 | // Class Symbol_table. |
521 | ||
09124467 | 522 | Symbol_table::Symbol_table(unsigned int count, |
2ea97941 | 523 | const Version_script_info& version_script) |
6d013333 | 524 | : saw_undefined_(0), offset_(0), table_(count), namepool_(), |
8a5e3e08 ILT |
525 | forwarders_(), commons_(), tls_commons_(), small_commons_(), |
526 | large_commons_(), forced_locals_(), warnings_(), | |
2ea97941 | 527 | version_script_(version_script), gc_(NULL), icf_(NULL) |
14bfc3f5 | 528 | { |
6d013333 | 529 | namepool_.reserve(count); |
14bfc3f5 ILT |
530 | } |
531 | ||
532 | Symbol_table::~Symbol_table() | |
533 | { | |
534 | } | |
535 | ||
ad8f37d1 ILT |
536 | // The symbol table key equality function. This is called with |
537 | // Stringpool keys. | |
14bfc3f5 | 538 | |
ad8f37d1 | 539 | inline bool |
14bfc3f5 ILT |
540 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, |
541 | const Symbol_table_key& k2) const | |
542 | { | |
543 | return k1.first == k2.first && k1.second == k2.second; | |
544 | } | |
545 | ||
ef15dade | 546 | bool |
2ea97941 | 547 | Symbol_table::is_section_folded(Object* obj, unsigned int shndx) const |
ef15dade | 548 | { |
032ce4e9 | 549 | return (parameters->options().icf_enabled() |
2ea97941 | 550 | && this->icf_->is_section_folded(obj, shndx)); |
ef15dade ST |
551 | } |
552 | ||
6d03d481 ST |
553 | // For symbols that have been listed with -u option, add them to the |
554 | // work list to avoid gc'ing them. | |
555 | ||
556 | void | |
88a4108b | 557 | Symbol_table::gc_mark_undef_symbols(Layout* layout) |
6d03d481 ST |
558 | { |
559 | for (options::String_set::const_iterator p = | |
560 | parameters->options().undefined_begin(); | |
561 | p != parameters->options().undefined_end(); | |
562 | ++p) | |
563 | { | |
2ea97941 ILT |
564 | const char* name = p->c_str(); |
565 | Symbol* sym = this->lookup(name); | |
ca09d69a | 566 | gold_assert(sym != NULL); |
6d03d481 ST |
567 | if (sym->source() == Symbol::FROM_OBJECT |
568 | && !sym->object()->is_dynamic()) | |
569 | { | |
570 | Relobj* obj = static_cast<Relobj*>(sym->object()); | |
571 | bool is_ordinary; | |
2ea97941 | 572 | unsigned int shndx = sym->shndx(&is_ordinary); |
6d03d481 ST |
573 | if (is_ordinary) |
574 | { | |
575 | gold_assert(this->gc_ != NULL); | |
2ea97941 | 576 | this->gc_->worklist().push(Section_id(obj, shndx)); |
6d03d481 ST |
577 | } |
578 | } | |
579 | } | |
88a4108b ILT |
580 | |
581 | for (Script_options::referenced_const_iterator p = | |
582 | layout->script_options()->referenced_begin(); | |
583 | p != layout->script_options()->referenced_end(); | |
584 | ++p) | |
585 | { | |
586 | Symbol* sym = this->lookup(p->c_str()); | |
587 | gold_assert(sym != NULL); | |
588 | if (sym->source() == Symbol::FROM_OBJECT | |
589 | && !sym->object()->is_dynamic()) | |
590 | { | |
591 | Relobj* obj = static_cast<Relobj*>(sym->object()); | |
592 | bool is_ordinary; | |
593 | unsigned int shndx = sym->shndx(&is_ordinary); | |
594 | if (is_ordinary) | |
595 | { | |
596 | gold_assert(this->gc_ != NULL); | |
597 | this->gc_->worklist().push(Section_id(obj, shndx)); | |
598 | } | |
599 | } | |
600 | } | |
6d03d481 ST |
601 | } |
602 | ||
603 | void | |
604 | Symbol_table::gc_mark_symbol_for_shlib(Symbol* sym) | |
605 | { | |
606 | if (!sym->is_from_dynobj() | |
607 | && sym->is_externally_visible()) | |
608 | { | |
609 | //Add the object and section to the work list. | |
610 | Relobj* obj = static_cast<Relobj*>(sym->object()); | |
611 | bool is_ordinary; | |
2ea97941 ILT |
612 | unsigned int shndx = sym->shndx(&is_ordinary); |
613 | if (is_ordinary && shndx != elfcpp::SHN_UNDEF) | |
6d03d481 ST |
614 | { |
615 | gold_assert(this->gc_!= NULL); | |
2ea97941 | 616 | this->gc_->worklist().push(Section_id(obj, shndx)); |
6d03d481 ST |
617 | } |
618 | } | |
619 | } | |
620 | ||
621 | // When doing garbage collection, keep symbols that have been seen in | |
622 | // dynamic objects. | |
623 | inline void | |
624 | Symbol_table::gc_mark_dyn_syms(Symbol* sym) | |
625 | { | |
626 | if (sym->in_dyn() && sym->source() == Symbol::FROM_OBJECT | |
627 | && !sym->object()->is_dynamic()) | |
628 | { | |
ca09d69a | 629 | Relobj* obj = static_cast<Relobj*>(sym->object()); |
6d03d481 | 630 | bool is_ordinary; |
2ea97941 ILT |
631 | unsigned int shndx = sym->shndx(&is_ordinary); |
632 | if (is_ordinary && shndx != elfcpp::SHN_UNDEF) | |
6d03d481 ST |
633 | { |
634 | gold_assert(this->gc_ != NULL); | |
2ea97941 | 635 | this->gc_->worklist().push(Section_id(obj, shndx)); |
6d03d481 ST |
636 | } |
637 | } | |
638 | } | |
639 | ||
dd8670e5 | 640 | // Make TO a symbol which forwards to FROM. |
14bfc3f5 ILT |
641 | |
642 | void | |
643 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
644 | { | |
a3ad94ed ILT |
645 | gold_assert(from != to); |
646 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
647 | this->forwarders_[from] = to; |
648 | from->set_forwarder(); | |
649 | } | |
650 | ||
61ba1cf9 ILT |
651 | // Resolve the forwards from FROM, returning the real symbol. |
652 | ||
14bfc3f5 | 653 | Symbol* |
c06b7b0b | 654 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 655 | { |
a3ad94ed | 656 | gold_assert(from->is_forwarder()); |
c06b7b0b | 657 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 658 | this->forwarders_.find(from); |
a3ad94ed | 659 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
660 | return p->second; |
661 | } | |
662 | ||
61ba1cf9 ILT |
663 | // Look up a symbol by name. |
664 | ||
665 | Symbol* | |
2ea97941 | 666 | Symbol_table::lookup(const char* name, const char* version) const |
61ba1cf9 | 667 | { |
f0641a0b | 668 | Stringpool::Key name_key; |
2ea97941 ILT |
669 | name = this->namepool_.find(name, &name_key); |
670 | if (name == NULL) | |
61ba1cf9 | 671 | return NULL; |
f0641a0b ILT |
672 | |
673 | Stringpool::Key version_key = 0; | |
2ea97941 | 674 | if (version != NULL) |
61ba1cf9 | 675 | { |
2ea97941 ILT |
676 | version = this->namepool_.find(version, &version_key); |
677 | if (version == NULL) | |
61ba1cf9 ILT |
678 | return NULL; |
679 | } | |
680 | ||
f0641a0b | 681 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
682 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
683 | if (p == this->table_.end()) | |
684 | return NULL; | |
685 | return p->second; | |
686 | } | |
687 | ||
14bfc3f5 ILT |
688 | // Resolve a Symbol with another Symbol. This is only used in the |
689 | // unusual case where there are references to both an unversioned | |
690 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
691 | // version is the default version. Because this is unusual, we do |
692 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 693 | |
1564db8d | 694 | template<int size, bool big_endian> |
14bfc3f5 | 695 | void |
95d14cd3 | 696 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from) |
14bfc3f5 | 697 | { |
1564db8d ILT |
698 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
699 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
d491d34e | 700 | // We don't bother to set the st_name or the st_shndx field. |
1564db8d ILT |
701 | esym.put_st_value(from->value()); |
702 | esym.put_st_size(from->symsize()); | |
703 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 704 | esym.put_st_other(from->visibility(), from->nonvis()); |
d491d34e | 705 | bool is_ordinary; |
2ea97941 ILT |
706 | unsigned int shndx = from->shndx(&is_ordinary); |
707 | this->resolve(to, esym.sym(), shndx, is_ordinary, shndx, from->object(), | |
95d14cd3 | 708 | from->version()); |
1ebd95fd ILT |
709 | if (from->in_reg()) |
710 | to->set_in_reg(); | |
711 | if (from->in_dyn()) | |
712 | to->set_in_dyn(); | |
6d03d481 ST |
713 | if (parameters->options().gc_sections()) |
714 | this->gc_mark_dyn_syms(to); | |
14bfc3f5 ILT |
715 | } |
716 | ||
0602e05a ILT |
717 | // Record that a symbol is forced to be local by a version script or |
718 | // by visibility. | |
55a93433 ILT |
719 | |
720 | void | |
721 | Symbol_table::force_local(Symbol* sym) | |
722 | { | |
723 | if (!sym->is_defined() && !sym->is_common()) | |
724 | return; | |
725 | if (sym->is_forced_local()) | |
726 | { | |
727 | // We already got this one. | |
728 | return; | |
729 | } | |
730 | sym->set_is_forced_local(); | |
731 | this->forced_locals_.push_back(sym); | |
732 | } | |
733 | ||
0864d551 ILT |
734 | // Adjust NAME for wrapping, and update *NAME_KEY if necessary. This |
735 | // is only called for undefined symbols, when at least one --wrap | |
736 | // option was used. | |
737 | ||
738 | const char* | |
2ea97941 | 739 | Symbol_table::wrap_symbol(const char* name, Stringpool::Key* name_key) |
0864d551 ILT |
740 | { |
741 | // For some targets, we need to ignore a specific character when | |
742 | // wrapping, and add it back later. | |
743 | char prefix = '\0'; | |
2ea97941 | 744 | if (name[0] == parameters->target().wrap_char()) |
0864d551 | 745 | { |
2ea97941 ILT |
746 | prefix = name[0]; |
747 | ++name; | |
0864d551 ILT |
748 | } |
749 | ||
2ea97941 | 750 | if (parameters->options().is_wrap(name)) |
0864d551 ILT |
751 | { |
752 | // Turn NAME into __wrap_NAME. | |
753 | std::string s; | |
754 | if (prefix != '\0') | |
755 | s += prefix; | |
756 | s += "__wrap_"; | |
2ea97941 | 757 | s += name; |
0864d551 ILT |
758 | |
759 | // This will give us both the old and new name in NAMEPOOL_, but | |
760 | // that is OK. Only the versions we need will wind up in the | |
761 | // real string table in the output file. | |
762 | return this->namepool_.add(s.c_str(), true, name_key); | |
763 | } | |
764 | ||
765 | const char* const real_prefix = "__real_"; | |
766 | const size_t real_prefix_length = strlen(real_prefix); | |
2ea97941 ILT |
767 | if (strncmp(name, real_prefix, real_prefix_length) == 0 |
768 | && parameters->options().is_wrap(name + real_prefix_length)) | |
0864d551 ILT |
769 | { |
770 | // Turn __real_NAME into NAME. | |
771 | std::string s; | |
772 | if (prefix != '\0') | |
773 | s += prefix; | |
2ea97941 | 774 | s += name + real_prefix_length; |
0864d551 ILT |
775 | return this->namepool_.add(s.c_str(), true, name_key); |
776 | } | |
777 | ||
2ea97941 | 778 | return name; |
0864d551 ILT |
779 | } |
780 | ||
8c500701 ILT |
781 | // This is called when we see a symbol NAME/VERSION, and the symbol |
782 | // already exists in the symbol table, and VERSION is marked as being | |
783 | // the default version. SYM is the NAME/VERSION symbol we just added. | |
784 | // DEFAULT_IS_NEW is true if this is the first time we have seen the | |
785 | // symbol NAME/NULL. PDEF points to the entry for NAME/NULL. | |
786 | ||
787 | template<int size, bool big_endian> | |
788 | void | |
789 | Symbol_table::define_default_version(Sized_symbol<size>* sym, | |
790 | bool default_is_new, | |
791 | Symbol_table_type::iterator pdef) | |
792 | { | |
793 | if (default_is_new) | |
794 | { | |
795 | // This is the first time we have seen NAME/NULL. Make | |
796 | // NAME/NULL point to NAME/VERSION, and mark SYM as the default | |
797 | // version. | |
798 | pdef->second = sym; | |
799 | sym->set_is_default(); | |
800 | } | |
801 | else if (pdef->second == sym) | |
802 | { | |
803 | // NAME/NULL already points to NAME/VERSION. Don't mark the | |
804 | // symbol as the default if it is not already the default. | |
805 | } | |
806 | else | |
807 | { | |
808 | // This is the unfortunate case where we already have entries | |
809 | // for both NAME/VERSION and NAME/NULL. We now see a symbol | |
810 | // NAME/VERSION where VERSION is the default version. We have | |
811 | // already resolved this new symbol with the existing | |
812 | // NAME/VERSION symbol. | |
813 | ||
814 | // It's possible that NAME/NULL and NAME/VERSION are both | |
815 | // defined in regular objects. This can only happen if one | |
816 | // object file defines foo and another defines foo@@ver. This | |
817 | // is somewhat obscure, but we call it a multiple definition | |
818 | // error. | |
819 | ||
820 | // It's possible that NAME/NULL actually has a version, in which | |
821 | // case it won't be the same as VERSION. This happens with | |
822 | // ver_test_7.so in the testsuite for the symbol t2_2. We see | |
823 | // t2_2@@VER2, so we define both t2_2/VER2 and t2_2/NULL. We | |
824 | // then see an unadorned t2_2 in an object file and give it | |
825 | // version VER1 from the version script. This looks like a | |
826 | // default definition for VER1, so it looks like we should merge | |
827 | // t2_2/NULL with t2_2/VER1. That doesn't make sense, but it's | |
828 | // not obvious that this is an error, either. So we just punt. | |
829 | ||
830 | // If one of the symbols has non-default visibility, and the | |
831 | // other is defined in a shared object, then they are different | |
832 | // symbols. | |
833 | ||
834 | // Otherwise, we just resolve the symbols as though they were | |
835 | // the same. | |
836 | ||
837 | if (pdef->second->version() != NULL) | |
838 | gold_assert(pdef->second->version() != sym->version()); | |
839 | else if (sym->visibility() != elfcpp::STV_DEFAULT | |
840 | && pdef->second->is_from_dynobj()) | |
841 | ; | |
842 | else if (pdef->second->visibility() != elfcpp::STV_DEFAULT | |
843 | && sym->is_from_dynobj()) | |
844 | ; | |
845 | else | |
846 | { | |
847 | const Sized_symbol<size>* symdef; | |
848 | symdef = this->get_sized_symbol<size>(pdef->second); | |
849 | Symbol_table::resolve<size, big_endian>(sym, symdef); | |
850 | this->make_forwarder(pdef->second, sym); | |
851 | pdef->second = sym; | |
852 | sym->set_is_default(); | |
853 | } | |
854 | } | |
855 | } | |
856 | ||
14bfc3f5 ILT |
857 | // Add one symbol from OBJECT to the symbol table. NAME is symbol |
858 | // name and VERSION is the version; both are canonicalized. DEF is | |
d491d34e ILT |
859 | // whether this is the default version. ST_SHNDX is the symbol's |
860 | // section index; IS_ORDINARY is whether this is a normal section | |
861 | // rather than a special code. | |
14bfc3f5 | 862 | |
8781f709 ILT |
863 | // If IS_DEFAULT_VERSION is true, then this is the definition of a |
864 | // default version of a symbol. That means that any lookup of | |
865 | // NAME/NULL and any lookup of NAME/VERSION should always return the | |
866 | // same symbol. This is obvious for references, but in particular we | |
867 | // want to do this for definitions: overriding NAME/NULL should also | |
868 | // override NAME/VERSION. If we don't do that, it would be very hard | |
869 | // to override functions in a shared library which uses versioning. | |
14bfc3f5 ILT |
870 | |
871 | // We implement this by simply making both entries in the hash table | |
872 | // point to the same Symbol structure. That is easy enough if this is | |
873 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
874 | // that we have seen both already, in which case they will both have | |
875 | // independent entries in the symbol table. We can't simply change | |
876 | // the symbol table entry, because we have pointers to the entries | |
877 | // attached to the object files. So we mark the entry attached to the | |
878 | // object file as a forwarder, and record it in the forwarders_ map. | |
879 | // Note that entries in the hash table will never be marked as | |
880 | // forwarders. | |
70e654ba | 881 | // |
d491d34e ILT |
882 | // ORIG_ST_SHNDX and ST_SHNDX are almost always the same. |
883 | // ORIG_ST_SHNDX is the section index in the input file, or SHN_UNDEF | |
884 | // for a special section code. ST_SHNDX may be modified if the symbol | |
885 | // is defined in a section being discarded. | |
14bfc3f5 ILT |
886 | |
887 | template<int size, bool big_endian> | |
aeddab66 | 888 | Sized_symbol<size>* |
2ea97941 | 889 | Symbol_table::add_from_object(Object* object, |
ca09d69a | 890 | const char* name, |
f0641a0b | 891 | Stringpool::Key name_key, |
ca09d69a | 892 | const char* version, |
f0641a0b | 893 | Stringpool::Key version_key, |
8781f709 | 894 | bool is_default_version, |
70e654ba | 895 | const elfcpp::Sym<size, big_endian>& sym, |
d491d34e ILT |
896 | unsigned int st_shndx, |
897 | bool is_ordinary, | |
898 | unsigned int orig_st_shndx) | |
14bfc3f5 | 899 | { |
c5818ff1 | 900 | // Print a message if this symbol is being traced. |
2ea97941 | 901 | if (parameters->options().is_trace_symbol(name)) |
c5818ff1 | 902 | { |
d491d34e | 903 | if (orig_st_shndx == elfcpp::SHN_UNDEF) |
2ea97941 | 904 | gold_info(_("%s: reference to %s"), object->name().c_str(), name); |
c5818ff1 | 905 | else |
2ea97941 | 906 | gold_info(_("%s: definition of %s"), object->name().c_str(), name); |
c5818ff1 CC |
907 | } |
908 | ||
0864d551 ILT |
909 | // For an undefined symbol, we may need to adjust the name using |
910 | // --wrap. | |
d491d34e | 911 | if (orig_st_shndx == elfcpp::SHN_UNDEF |
c5818ff1 | 912 | && parameters->options().any_wrap()) |
0864d551 | 913 | { |
2ea97941 ILT |
914 | const char* wrap_name = this->wrap_symbol(name, &name_key); |
915 | if (wrap_name != name) | |
0864d551 ILT |
916 | { |
917 | // If we see a reference to malloc with version GLIBC_2.0, | |
918 | // and we turn it into a reference to __wrap_malloc, then we | |
919 | // discard the version number. Otherwise the user would be | |
920 | // required to specify the correct version for | |
921 | // __wrap_malloc. | |
2ea97941 | 922 | version = NULL; |
0864d551 | 923 | version_key = 0; |
2ea97941 | 924 | name = wrap_name; |
0864d551 ILT |
925 | } |
926 | } | |
927 | ||
14bfc3f5 ILT |
928 | Symbol* const snull = NULL; |
929 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
930 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
931 | snull)); | |
14bfc3f5 | 932 | |
8781f709 | 933 | std::pair<typename Symbol_table_type::iterator, bool> insdefault = |
14bfc3f5 | 934 | std::make_pair(this->table_.end(), false); |
8781f709 | 935 | if (is_default_version) |
14bfc3f5 | 936 | { |
f0641a0b | 937 | const Stringpool::Key vnull_key = 0; |
8781f709 ILT |
938 | insdefault = this->table_.insert(std::make_pair(std::make_pair(name_key, |
939 | vnull_key), | |
940 | snull)); | |
14bfc3f5 ILT |
941 | } |
942 | ||
943 | // ins.first: an iterator, which is a pointer to a pair. | |
944 | // ins.first->first: the key (a pair of name and version). | |
945 | // ins.first->second: the value (Symbol*). | |
946 | // ins.second: true if new entry was inserted, false if not. | |
947 | ||
1564db8d | 948 | Sized_symbol<size>* ret; |
ead1e424 ILT |
949 | bool was_undefined; |
950 | bool was_common; | |
14bfc3f5 ILT |
951 | if (!ins.second) |
952 | { | |
953 | // We already have an entry for NAME/VERSION. | |
7d1a9ebb | 954 | ret = this->get_sized_symbol<size>(ins.first->second); |
a3ad94ed | 955 | gold_assert(ret != NULL); |
ead1e424 ILT |
956 | |
957 | was_undefined = ret->is_undefined(); | |
958 | was_common = ret->is_common(); | |
959 | ||
2ea97941 ILT |
960 | this->resolve(ret, sym, st_shndx, is_ordinary, orig_st_shndx, object, |
961 | version); | |
6d03d481 ST |
962 | if (parameters->options().gc_sections()) |
963 | this->gc_mark_dyn_syms(ret); | |
14bfc3f5 | 964 | |
8781f709 ILT |
965 | if (is_default_version) |
966 | this->define_default_version<size, big_endian>(ret, insdefault.second, | |
967 | insdefault.first); | |
14bfc3f5 ILT |
968 | } |
969 | else | |
970 | { | |
971 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 972 | gold_assert(ins.first->second == NULL); |
ead1e424 | 973 | |
8781f709 | 974 | if (is_default_version && !insdefault.second) |
14bfc3f5 | 975 | { |
14b31740 ILT |
976 | // We already have an entry for NAME/NULL. If we override |
977 | // it, then change it to NAME/VERSION. | |
8781f709 | 978 | ret = this->get_sized_symbol<size>(insdefault.first->second); |
18e6b24e ILT |
979 | |
980 | was_undefined = ret->is_undefined(); | |
981 | was_common = ret->is_common(); | |
982 | ||
2ea97941 ILT |
983 | this->resolve(ret, sym, st_shndx, is_ordinary, orig_st_shndx, object, |
984 | version); | |
6d03d481 ST |
985 | if (parameters->options().gc_sections()) |
986 | this->gc_mark_dyn_syms(ret); | |
14bfc3f5 ILT |
987 | ins.first->second = ret; |
988 | } | |
989 | else | |
990 | { | |
18e6b24e ILT |
991 | was_undefined = false; |
992 | was_common = false; | |
993 | ||
f6ce93d6 | 994 | Sized_target<size, big_endian>* target = |
029ba973 | 995 | parameters->sized_target<size, big_endian>(); |
1564db8d ILT |
996 | if (!target->has_make_symbol()) |
997 | ret = new Sized_symbol<size>(); | |
998 | else | |
14bfc3f5 | 999 | { |
1564db8d ILT |
1000 | ret = target->make_symbol(); |
1001 | if (ret == NULL) | |
14bfc3f5 ILT |
1002 | { |
1003 | // This means that we don't want a symbol table | |
1004 | // entry after all. | |
8781f709 | 1005 | if (!is_default_version) |
14bfc3f5 ILT |
1006 | this->table_.erase(ins.first); |
1007 | else | |
1008 | { | |
8781f709 ILT |
1009 | this->table_.erase(insdefault.first); |
1010 | // Inserting INSDEFAULT invalidated INS. | |
f0641a0b ILT |
1011 | this->table_.erase(std::make_pair(name_key, |
1012 | version_key)); | |
14bfc3f5 ILT |
1013 | } |
1014 | return NULL; | |
1015 | } | |
1016 | } | |
14bfc3f5 | 1017 | |
2ea97941 | 1018 | ret->init_object(name, version, object, sym, st_shndx, is_ordinary); |
1564db8d | 1019 | |
14bfc3f5 | 1020 | ins.first->second = ret; |
8781f709 | 1021 | if (is_default_version) |
14bfc3f5 ILT |
1022 | { |
1023 | // This is the first time we have seen NAME/NULL. Point | |
1024 | // it at the new entry for NAME/VERSION. | |
8781f709 ILT |
1025 | gold_assert(insdefault.second); |
1026 | insdefault.first->second = ret; | |
14bfc3f5 ILT |
1027 | } |
1028 | } | |
8c500701 | 1029 | |
8781f709 | 1030 | if (is_default_version) |
8c500701 | 1031 | ret->set_is_default(); |
14bfc3f5 ILT |
1032 | } |
1033 | ||
ead1e424 ILT |
1034 | // Record every time we see a new undefined symbol, to speed up |
1035 | // archive groups. | |
1036 | if (!was_undefined && ret->is_undefined()) | |
0f3b89d8 ILT |
1037 | { |
1038 | ++this->saw_undefined_; | |
1039 | if (parameters->options().has_plugins()) | |
1040 | parameters->options().plugins()->new_undefined_symbol(ret); | |
1041 | } | |
ead1e424 ILT |
1042 | |
1043 | // Keep track of common symbols, to speed up common symbol | |
1044 | // allocation. | |
1045 | if (!was_common && ret->is_common()) | |
155a0dd7 | 1046 | { |
8a5e3e08 | 1047 | if (ret->type() == elfcpp::STT_TLS) |
155a0dd7 | 1048 | this->tls_commons_.push_back(ret); |
8a5e3e08 ILT |
1049 | else if (!is_ordinary |
1050 | && st_shndx == parameters->target().small_common_shndx()) | |
1051 | this->small_commons_.push_back(ret); | |
1052 | else if (!is_ordinary | |
1053 | && st_shndx == parameters->target().large_common_shndx()) | |
1054 | this->large_commons_.push_back(ret); | |
1055 | else | |
1056 | this->commons_.push_back(ret); | |
155a0dd7 | 1057 | } |
ead1e424 | 1058 | |
0602e05a ILT |
1059 | // If we're not doing a relocatable link, then any symbol with |
1060 | // hidden or internal visibility is local. | |
1061 | if ((ret->visibility() == elfcpp::STV_HIDDEN | |
1062 | || ret->visibility() == elfcpp::STV_INTERNAL) | |
1063 | && (ret->binding() == elfcpp::STB_GLOBAL | |
adcf2816 | 1064 | || ret->binding() == elfcpp::STB_GNU_UNIQUE |
0602e05a ILT |
1065 | || ret->binding() == elfcpp::STB_WEAK) |
1066 | && !parameters->options().relocatable()) | |
1067 | this->force_local(ret); | |
1068 | ||
14bfc3f5 ILT |
1069 | return ret; |
1070 | } | |
1071 | ||
f6ce93d6 | 1072 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
1073 | |
1074 | template<int size, bool big_endian> | |
1075 | void | |
dbe717ef | 1076 | Symbol_table::add_from_relobj( |
6fa2a40b | 1077 | Sized_relobj_file<size, big_endian>* relobj, |
f6ce93d6 | 1078 | const unsigned char* syms, |
14bfc3f5 | 1079 | size_t count, |
d491d34e | 1080 | size_t symndx_offset, |
14bfc3f5 ILT |
1081 | const char* sym_names, |
1082 | size_t sym_name_size, | |
6fa2a40b | 1083 | typename Sized_relobj_file<size, big_endian>::Symbols* sympointers, |
ca09d69a | 1084 | size_t* defined) |
14bfc3f5 | 1085 | { |
92de84a6 ILT |
1086 | *defined = 0; |
1087 | ||
8851ecca | 1088 | gold_assert(size == parameters->target().get_size()); |
14bfc3f5 | 1089 | |
a783673b ILT |
1090 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
1091 | ||
88dd47ac ILT |
1092 | const bool just_symbols = relobj->just_symbols(); |
1093 | ||
f6ce93d6 | 1094 | const unsigned char* p = syms; |
a783673b | 1095 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 | 1096 | { |
92de84a6 ILT |
1097 | (*sympointers)[i] = NULL; |
1098 | ||
14bfc3f5 ILT |
1099 | elfcpp::Sym<size, big_endian> sym(p); |
1100 | ||
d491d34e | 1101 | unsigned int st_name = sym.get_st_name(); |
14bfc3f5 ILT |
1102 | if (st_name >= sym_name_size) |
1103 | { | |
75f2446e ILT |
1104 | relobj->error(_("bad global symbol name offset %u at %zu"), |
1105 | st_name, i); | |
1106 | continue; | |
14bfc3f5 ILT |
1107 | } |
1108 | ||
2ea97941 | 1109 | const char* name = sym_names + st_name; |
dbe717ef | 1110 | |
d491d34e ILT |
1111 | bool is_ordinary; |
1112 | unsigned int st_shndx = relobj->adjust_sym_shndx(i + symndx_offset, | |
1113 | sym.get_st_shndx(), | |
1114 | &is_ordinary); | |
1115 | unsigned int orig_st_shndx = st_shndx; | |
1116 | if (!is_ordinary) | |
1117 | orig_st_shndx = elfcpp::SHN_UNDEF; | |
1118 | ||
92de84a6 ILT |
1119 | if (st_shndx != elfcpp::SHN_UNDEF) |
1120 | ++*defined; | |
1121 | ||
a783673b ILT |
1122 | // A symbol defined in a section which we are not including must |
1123 | // be treated as an undefined symbol. | |
880cd20d | 1124 | bool is_defined_in_discarded_section = false; |
a783673b | 1125 | if (st_shndx != elfcpp::SHN_UNDEF |
d491d34e | 1126 | && is_ordinary |
ce97fa81 ST |
1127 | && !relobj->is_section_included(st_shndx) |
1128 | && !this->is_section_folded(relobj, st_shndx)) | |
880cd20d ILT |
1129 | { |
1130 | st_shndx = elfcpp::SHN_UNDEF; | |
1131 | is_defined_in_discarded_section = true; | |
1132 | } | |
a783673b | 1133 | |
14bfc3f5 ILT |
1134 | // In an object file, an '@' in the name separates the symbol |
1135 | // name from the version name. If there are two '@' characters, | |
1136 | // this is the default version. | |
2ea97941 | 1137 | const char* ver = strchr(name, '@'); |
057ead22 | 1138 | Stringpool::Key ver_key = 0; |
09124467 | 1139 | int namelen = 0; |
8781f709 ILT |
1140 | // IS_DEFAULT_VERSION: is the version default? |
1141 | // IS_FORCED_LOCAL: is the symbol forced local? | |
1142 | bool is_default_version = false; | |
1143 | bool is_forced_local = false; | |
09124467 ILT |
1144 | |
1145 | if (ver != NULL) | |
1146 | { | |
1147 | // The symbol name is of the form foo@VERSION or foo@@VERSION | |
2ea97941 | 1148 | namelen = ver - name; |
09124467 ILT |
1149 | ++ver; |
1150 | if (*ver == '@') | |
1151 | { | |
8781f709 | 1152 | is_default_version = true; |
09124467 ILT |
1153 | ++ver; |
1154 | } | |
057ead22 | 1155 | ver = this->namepool_.add(ver, true, &ver_key); |
09124467 | 1156 | } |
5871526f ILT |
1157 | // We don't want to assign a version to an undefined symbol, |
1158 | // even if it is listed in the version script. FIXME: What | |
1159 | // about a common symbol? | |
057ead22 ILT |
1160 | else |
1161 | { | |
2ea97941 | 1162 | namelen = strlen(name); |
057ead22 ILT |
1163 | if (!this->version_script_.empty() |
1164 | && st_shndx != elfcpp::SHN_UNDEF) | |
1165 | { | |
1166 | // The symbol name did not have a version, but the | |
1167 | // version script may assign a version anyway. | |
2ea97941 | 1168 | std::string version; |
98e090bd ILT |
1169 | bool is_global; |
1170 | if (this->version_script_.get_symbol_version(name, &version, | |
1171 | &is_global)) | |
057ead22 | 1172 | { |
98e090bd ILT |
1173 | if (!is_global) |
1174 | is_forced_local = true; | |
1175 | else if (!version.empty()) | |
057ead22 | 1176 | { |
2ea97941 ILT |
1177 | ver = this->namepool_.add_with_length(version.c_str(), |
1178 | version.length(), | |
057ead22 ILT |
1179 | true, |
1180 | &ver_key); | |
8781f709 | 1181 | is_default_version = true; |
057ead22 ILT |
1182 | } |
1183 | } | |
057ead22 ILT |
1184 | } |
1185 | } | |
14bfc3f5 | 1186 | |
d491d34e ILT |
1187 | elfcpp::Sym<size, big_endian>* psym = &sym; |
1188 | unsigned char symbuf[sym_size]; | |
1189 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
88dd47ac ILT |
1190 | if (just_symbols) |
1191 | { | |
d491d34e | 1192 | memcpy(symbuf, p, sym_size); |
88dd47ac | 1193 | elfcpp::Sym_write<size, big_endian> sw(symbuf); |
d491d34e | 1194 | if (orig_st_shndx != elfcpp::SHN_UNDEF && is_ordinary) |
88dd47ac ILT |
1195 | { |
1196 | // Symbol values in object files are section relative. | |
1197 | // This is normally what we want, but since here we are | |
1198 | // converting the symbol to absolute we need to add the | |
1199 | // section address. The section address in an object | |
1200 | // file is normally zero, but people can use a linker | |
1201 | // script to change it. | |
d491d34e ILT |
1202 | sw.put_st_value(sym.get_st_value() |
1203 | + relobj->section_address(orig_st_shndx)); | |
88dd47ac | 1204 | } |
d491d34e ILT |
1205 | st_shndx = elfcpp::SHN_ABS; |
1206 | is_ordinary = false; | |
88dd47ac ILT |
1207 | psym = &sym2; |
1208 | } | |
1209 | ||
65514900 | 1210 | // Fix up visibility if object has no-export set. |
1c74fab0 ILT |
1211 | if (relobj->no_export() |
1212 | && (orig_st_shndx != elfcpp::SHN_UNDEF || !is_ordinary)) | |
65514900 CC |
1213 | { |
1214 | // We may have copied symbol already above. | |
1215 | if (psym != &sym2) | |
1216 | { | |
1217 | memcpy(symbuf, p, sym_size); | |
1218 | psym = &sym2; | |
1219 | } | |
1220 | ||
1221 | elfcpp::STV visibility = sym2.get_st_visibility(); | |
1222 | if (visibility == elfcpp::STV_DEFAULT | |
1223 | || visibility == elfcpp::STV_PROTECTED) | |
1224 | { | |
1225 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
1226 | unsigned char nonvis = sym2.get_st_nonvis(); | |
1227 | sw.put_st_other(elfcpp::STV_HIDDEN, nonvis); | |
1228 | } | |
1229 | } | |
1230 | ||
057ead22 | 1231 | Stringpool::Key name_key; |
2ea97941 | 1232 | name = this->namepool_.add_with_length(name, namelen, true, |
057ead22 ILT |
1233 | &name_key); |
1234 | ||
aeddab66 | 1235 | Sized_symbol<size>* res; |
2ea97941 | 1236 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
8781f709 ILT |
1237 | is_default_version, *psym, st_shndx, |
1238 | is_ordinary, orig_st_shndx); | |
6d03d481 ST |
1239 | |
1240 | // If building a shared library using garbage collection, do not | |
1241 | // treat externally visible symbols as garbage. | |
1242 | if (parameters->options().gc_sections() | |
1243 | && parameters->options().shared()) | |
1244 | this->gc_mark_symbol_for_shlib(res); | |
f0641a0b | 1245 | |
8781f709 | 1246 | if (is_forced_local) |
057ead22 | 1247 | this->force_local(res); |
14bfc3f5 | 1248 | |
880cd20d ILT |
1249 | if (is_defined_in_discarded_section) |
1250 | res->set_is_defined_in_discarded_section(); | |
1251 | ||
730cdc88 | 1252 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
1253 | } |
1254 | } | |
1255 | ||
89fc3421 CC |
1256 | // Add a symbol from a plugin-claimed file. |
1257 | ||
1258 | template<int size, bool big_endian> | |
1259 | Symbol* | |
1260 | Symbol_table::add_from_pluginobj( | |
1261 | Sized_pluginobj<size, big_endian>* obj, | |
2ea97941 | 1262 | const char* name, |
89fc3421 CC |
1263 | const char* ver, |
1264 | elfcpp::Sym<size, big_endian>* sym) | |
1265 | { | |
1266 | unsigned int st_shndx = sym->get_st_shndx(); | |
24998053 | 1267 | bool is_ordinary = st_shndx < elfcpp::SHN_LORESERVE; |
89fc3421 CC |
1268 | |
1269 | Stringpool::Key ver_key = 0; | |
8781f709 ILT |
1270 | bool is_default_version = false; |
1271 | bool is_forced_local = false; | |
89fc3421 CC |
1272 | |
1273 | if (ver != NULL) | |
1274 | { | |
1275 | ver = this->namepool_.add(ver, true, &ver_key); | |
1276 | } | |
1277 | // We don't want to assign a version to an undefined symbol, | |
1278 | // even if it is listed in the version script. FIXME: What | |
1279 | // about a common symbol? | |
1280 | else | |
1281 | { | |
1282 | if (!this->version_script_.empty() | |
1283 | && st_shndx != elfcpp::SHN_UNDEF) | |
1284 | { | |
1285 | // The symbol name did not have a version, but the | |
1286 | // version script may assign a version anyway. | |
2ea97941 | 1287 | std::string version; |
98e090bd ILT |
1288 | bool is_global; |
1289 | if (this->version_script_.get_symbol_version(name, &version, | |
1290 | &is_global)) | |
89fc3421 | 1291 | { |
98e090bd ILT |
1292 | if (!is_global) |
1293 | is_forced_local = true; | |
1294 | else if (!version.empty()) | |
89fc3421 | 1295 | { |
2ea97941 ILT |
1296 | ver = this->namepool_.add_with_length(version.c_str(), |
1297 | version.length(), | |
89fc3421 CC |
1298 | true, |
1299 | &ver_key); | |
8781f709 | 1300 | is_default_version = true; |
89fc3421 CC |
1301 | } |
1302 | } | |
89fc3421 CC |
1303 | } |
1304 | } | |
1305 | ||
1306 | Stringpool::Key name_key; | |
2ea97941 | 1307 | name = this->namepool_.add(name, true, &name_key); |
89fc3421 CC |
1308 | |
1309 | Sized_symbol<size>* res; | |
2ea97941 | 1310 | res = this->add_from_object(obj, name, name_key, ver, ver_key, |
8781f709 ILT |
1311 | is_default_version, *sym, st_shndx, |
1312 | is_ordinary, st_shndx); | |
89fc3421 | 1313 | |
8781f709 | 1314 | if (is_forced_local) |
0602e05a | 1315 | this->force_local(res); |
89fc3421 CC |
1316 | |
1317 | return res; | |
1318 | } | |
1319 | ||
dbe717ef ILT |
1320 | // Add all the symbols in a dynamic object to the hash table. |
1321 | ||
1322 | template<int size, bool big_endian> | |
1323 | void | |
1324 | Symbol_table::add_from_dynobj( | |
1325 | Sized_dynobj<size, big_endian>* dynobj, | |
1326 | const unsigned char* syms, | |
1327 | size_t count, | |
1328 | const char* sym_names, | |
1329 | size_t sym_name_size, | |
1330 | const unsigned char* versym, | |
1331 | size_t versym_size, | |
92de84a6 | 1332 | const std::vector<const char*>* version_map, |
6fa2a40b | 1333 | typename Sized_relobj_file<size, big_endian>::Symbols* sympointers, |
92de84a6 | 1334 | size_t* defined) |
dbe717ef | 1335 | { |
92de84a6 ILT |
1336 | *defined = 0; |
1337 | ||
8851ecca | 1338 | gold_assert(size == parameters->target().get_size()); |
dbe717ef | 1339 | |
88dd47ac ILT |
1340 | if (dynobj->just_symbols()) |
1341 | { | |
1342 | gold_error(_("--just-symbols does not make sense with a shared object")); | |
1343 | return; | |
1344 | } | |
1345 | ||
dbe717ef ILT |
1346 | if (versym != NULL && versym_size / 2 < count) |
1347 | { | |
75f2446e ILT |
1348 | dynobj->error(_("too few symbol versions")); |
1349 | return; | |
dbe717ef ILT |
1350 | } |
1351 | ||
1352 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1353 | ||
aeddab66 ILT |
1354 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
1355 | // weak aliases. This is necessary because if the dynamic object | |
1356 | // provides the same variable under two names, one of which is a | |
1357 | // weak definition, and the regular object refers to the weak | |
1358 | // definition, we have to put both the weak definition and the | |
1359 | // strong definition into the dynamic symbol table. Given a weak | |
1360 | // definition, the only way that we can find the corresponding | |
1361 | // strong definition, if any, is to search the symbol table. | |
1362 | std::vector<Sized_symbol<size>*> object_symbols; | |
1363 | ||
dbe717ef ILT |
1364 | const unsigned char* p = syms; |
1365 | const unsigned char* vs = versym; | |
1366 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
1367 | { | |
1368 | elfcpp::Sym<size, big_endian> sym(p); | |
1369 | ||
92de84a6 ILT |
1370 | if (sympointers != NULL) |
1371 | (*sympointers)[i] = NULL; | |
1372 | ||
65778909 ILT |
1373 | // Ignore symbols with local binding or that have |
1374 | // internal or hidden visibility. | |
1375 | if (sym.get_st_bind() == elfcpp::STB_LOCAL | |
1376 | || sym.get_st_visibility() == elfcpp::STV_INTERNAL | |
1377 | || sym.get_st_visibility() == elfcpp::STV_HIDDEN) | |
dbe717ef ILT |
1378 | continue; |
1379 | ||
8bdcdf2c ILT |
1380 | // A protected symbol in a shared library must be treated as a |
1381 | // normal symbol when viewed from outside the shared library. | |
1382 | // Implement this by overriding the visibility here. | |
1383 | elfcpp::Sym<size, big_endian>* psym = &sym; | |
1384 | unsigned char symbuf[sym_size]; | |
1385 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
1386 | if (sym.get_st_visibility() == elfcpp::STV_PROTECTED) | |
1387 | { | |
1388 | memcpy(symbuf, p, sym_size); | |
1389 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
1390 | sw.put_st_other(elfcpp::STV_DEFAULT, sym.get_st_nonvis()); | |
1391 | psym = &sym2; | |
1392 | } | |
1393 | ||
1394 | unsigned int st_name = psym->get_st_name(); | |
dbe717ef ILT |
1395 | if (st_name >= sym_name_size) |
1396 | { | |
75f2446e ILT |
1397 | dynobj->error(_("bad symbol name offset %u at %zu"), |
1398 | st_name, i); | |
1399 | continue; | |
dbe717ef ILT |
1400 | } |
1401 | ||
2ea97941 | 1402 | const char* name = sym_names + st_name; |
dbe717ef | 1403 | |
d491d34e | 1404 | bool is_ordinary; |
8bdcdf2c | 1405 | unsigned int st_shndx = dynobj->adjust_sym_shndx(i, psym->get_st_shndx(), |
d491d34e ILT |
1406 | &is_ordinary); |
1407 | ||
92de84a6 ILT |
1408 | if (st_shndx != elfcpp::SHN_UNDEF) |
1409 | ++*defined; | |
1410 | ||
aeddab66 ILT |
1411 | Sized_symbol<size>* res; |
1412 | ||
dbe717ef ILT |
1413 | if (versym == NULL) |
1414 | { | |
1415 | Stringpool::Key name_key; | |
2ea97941 ILT |
1416 | name = this->namepool_.add(name, true, &name_key); |
1417 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
8bdcdf2c | 1418 | false, *psym, st_shndx, is_ordinary, |
d491d34e | 1419 | st_shndx); |
dbe717ef | 1420 | } |
aeddab66 ILT |
1421 | else |
1422 | { | |
1423 | // Read the version information. | |
dbe717ef | 1424 | |
aeddab66 | 1425 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 1426 | |
aeddab66 ILT |
1427 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
1428 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 1429 | |
aeddab66 ILT |
1430 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
1431 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
1432 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
1433 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
1434 | // for an undefined symbol. I don't know what the Sun | |
1435 | // linker will generate. | |
dbe717ef | 1436 | |
aeddab66 | 1437 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
d491d34e | 1438 | && st_shndx != elfcpp::SHN_UNDEF) |
aeddab66 ILT |
1439 | { |
1440 | // This symbol should not be visible outside the object. | |
1441 | continue; | |
1442 | } | |
64707334 | 1443 | |
aeddab66 ILT |
1444 | // At this point we are definitely going to add this symbol. |
1445 | Stringpool::Key name_key; | |
2ea97941 | 1446 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 1447 | |
aeddab66 ILT |
1448 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
1449 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
1450 | { | |
1451 | // This symbol does not have a version. | |
2ea97941 | 1452 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
8bdcdf2c | 1453 | false, *psym, st_shndx, is_ordinary, |
d491d34e | 1454 | st_shndx); |
aeddab66 ILT |
1455 | } |
1456 | else | |
1457 | { | |
1458 | if (v >= version_map->size()) | |
1459 | { | |
1460 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
1461 | i, v); | |
1462 | continue; | |
1463 | } | |
dbe717ef | 1464 | |
2ea97941 ILT |
1465 | const char* version = (*version_map)[v]; |
1466 | if (version == NULL) | |
aeddab66 ILT |
1467 | { |
1468 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
1469 | i, v); | |
1470 | continue; | |
1471 | } | |
dbe717ef | 1472 | |
aeddab66 | 1473 | Stringpool::Key version_key; |
2ea97941 | 1474 | version = this->namepool_.add(version, true, &version_key); |
aeddab66 ILT |
1475 | |
1476 | // If this is an absolute symbol, and the version name | |
1477 | // and symbol name are the same, then this is the | |
1478 | // version definition symbol. These symbols exist to | |
1479 | // support using -u to pull in particular versions. We | |
1480 | // do not want to record a version for them. | |
d491d34e ILT |
1481 | if (st_shndx == elfcpp::SHN_ABS |
1482 | && !is_ordinary | |
aeddab66 | 1483 | && name_key == version_key) |
2ea97941 | 1484 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
8bdcdf2c | 1485 | false, *psym, st_shndx, is_ordinary, |
d491d34e | 1486 | st_shndx); |
aeddab66 ILT |
1487 | else |
1488 | { | |
8781f709 ILT |
1489 | const bool is_default_version = |
1490 | !hidden && st_shndx != elfcpp::SHN_UNDEF; | |
2ea97941 | 1491 | res = this->add_from_object(dynobj, name, name_key, version, |
8781f709 ILT |
1492 | version_key, is_default_version, |
1493 | *psym, st_shndx, | |
d491d34e | 1494 | is_ordinary, st_shndx); |
aeddab66 ILT |
1495 | } |
1496 | } | |
dbe717ef ILT |
1497 | } |
1498 | ||
99a37bfd | 1499 | // Note that it is possible that RES was overridden by an |
a4bb589a | 1500 | // earlier object, in which case it can't be aliased here. |
d491d34e ILT |
1501 | if (st_shndx != elfcpp::SHN_UNDEF |
1502 | && is_ordinary | |
8bdcdf2c | 1503 | && psym->get_st_type() == elfcpp::STT_OBJECT |
99a37bfd ILT |
1504 | && res->source() == Symbol::FROM_OBJECT |
1505 | && res->object() == dynobj) | |
aeddab66 | 1506 | object_symbols.push_back(res); |
92de84a6 ILT |
1507 | |
1508 | if (sympointers != NULL) | |
1509 | (*sympointers)[i] = res; | |
aeddab66 ILT |
1510 | } |
1511 | ||
1512 | this->record_weak_aliases(&object_symbols); | |
1513 | } | |
1514 | ||
cdc29364 CC |
1515 | // Add a symbol from a incremental object file. |
1516 | ||
1517 | template<int size, bool big_endian> | |
26d3c67d | 1518 | Sized_symbol<size>* |
cdc29364 CC |
1519 | Symbol_table::add_from_incrobj( |
1520 | Object* obj, | |
1521 | const char* name, | |
1522 | const char* ver, | |
1523 | elfcpp::Sym<size, big_endian>* sym) | |
1524 | { | |
1525 | unsigned int st_shndx = sym->get_st_shndx(); | |
1526 | bool is_ordinary = st_shndx < elfcpp::SHN_LORESERVE; | |
1527 | ||
1528 | Stringpool::Key ver_key = 0; | |
1529 | bool is_default_version = false; | |
1530 | bool is_forced_local = false; | |
1531 | ||
1532 | Stringpool::Key name_key; | |
1533 | name = this->namepool_.add(name, true, &name_key); | |
1534 | ||
1535 | Sized_symbol<size>* res; | |
1536 | res = this->add_from_object(obj, name, name_key, ver, ver_key, | |
1537 | is_default_version, *sym, st_shndx, | |
1538 | is_ordinary, st_shndx); | |
1539 | ||
1540 | if (is_forced_local) | |
1541 | this->force_local(res); | |
1542 | ||
1543 | return res; | |
1544 | } | |
1545 | ||
aeddab66 ILT |
1546 | // This is used to sort weak aliases. We sort them first by section |
1547 | // index, then by offset, then by weak ahead of strong. | |
1548 | ||
1549 | template<int size> | |
1550 | class Weak_alias_sorter | |
1551 | { | |
1552 | public: | |
1553 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
1554 | }; | |
1555 | ||
1556 | template<int size> | |
1557 | bool | |
1558 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
1559 | const Sized_symbol<size>* s2) const | |
1560 | { | |
d491d34e ILT |
1561 | bool is_ordinary; |
1562 | unsigned int s1_shndx = s1->shndx(&is_ordinary); | |
1563 | gold_assert(is_ordinary); | |
1564 | unsigned int s2_shndx = s2->shndx(&is_ordinary); | |
1565 | gold_assert(is_ordinary); | |
1566 | if (s1_shndx != s2_shndx) | |
1567 | return s1_shndx < s2_shndx; | |
1568 | ||
aeddab66 ILT |
1569 | if (s1->value() != s2->value()) |
1570 | return s1->value() < s2->value(); | |
1571 | if (s1->binding() != s2->binding()) | |
1572 | { | |
1573 | if (s1->binding() == elfcpp::STB_WEAK) | |
1574 | return true; | |
1575 | if (s2->binding() == elfcpp::STB_WEAK) | |
1576 | return false; | |
1577 | } | |
1578 | return std::string(s1->name()) < std::string(s2->name()); | |
1579 | } | |
dbe717ef | 1580 | |
aeddab66 ILT |
1581 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
1582 | // for any weak aliases, and record them so that if we add the weak | |
1583 | // alias to the dynamic symbol table, we also add the corresponding | |
1584 | // strong symbol. | |
dbe717ef | 1585 | |
aeddab66 ILT |
1586 | template<int size> |
1587 | void | |
1588 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
1589 | { | |
1590 | // Sort the vector by section index, then by offset, then by weak | |
1591 | // ahead of strong. | |
1592 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
1593 | ||
1594 | // Walk through the vector. For each weak definition, record | |
1595 | // aliases. | |
1596 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
1597 | symbols->begin(); | |
1598 | p != symbols->end(); | |
1599 | ++p) | |
1600 | { | |
1601 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
1602 | continue; | |
1603 | ||
1604 | // Build a circular list of weak aliases. Each symbol points to | |
1605 | // the next one in the circular list. | |
1606 | ||
1607 | Sized_symbol<size>* from_sym = *p; | |
1608 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
1609 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 1610 | { |
d491d34e ILT |
1611 | bool dummy; |
1612 | if ((*q)->shndx(&dummy) != from_sym->shndx(&dummy) | |
aeddab66 ILT |
1613 | || (*q)->value() != from_sym->value()) |
1614 | break; | |
1615 | ||
1616 | this->weak_aliases_[from_sym] = *q; | |
1617 | from_sym->set_has_alias(); | |
1618 | from_sym = *q; | |
dbe717ef ILT |
1619 | } |
1620 | ||
aeddab66 ILT |
1621 | if (from_sym != *p) |
1622 | { | |
1623 | this->weak_aliases_[from_sym] = *p; | |
1624 | from_sym->set_has_alias(); | |
1625 | } | |
dbe717ef | 1626 | |
aeddab66 | 1627 | p = q - 1; |
dbe717ef ILT |
1628 | } |
1629 | } | |
1630 | ||
ead1e424 ILT |
1631 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
1632 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 1633 | // If this does not return NULL, it sets *POLDSYM to the existing |
8c500701 ILT |
1634 | // symbol if there is one. This sets *RESOLVE_OLDSYM if we should |
1635 | // resolve the newly created symbol to the old one. This | |
1636 | // canonicalizes *PNAME and *PVERSION. | |
ead1e424 ILT |
1637 | |
1638 | template<int size, bool big_endian> | |
1639 | Sized_symbol<size>* | |
9b07f471 ILT |
1640 | Symbol_table::define_special_symbol(const char** pname, const char** pversion, |
1641 | bool only_if_ref, | |
8c500701 | 1642 | Sized_symbol<size>** poldsym, |
ca09d69a | 1643 | bool* resolve_oldsym) |
ead1e424 | 1644 | { |
8c500701 | 1645 | *resolve_oldsym = false; |
ead1e424 | 1646 | |
55a93433 ILT |
1647 | // If the caller didn't give us a version, see if we get one from |
1648 | // the version script. | |
057ead22 | 1649 | std::string v; |
8c500701 | 1650 | bool is_default_version = false; |
55a93433 ILT |
1651 | if (*pversion == NULL) |
1652 | { | |
98e090bd ILT |
1653 | bool is_global; |
1654 | if (this->version_script_.get_symbol_version(*pname, &v, &is_global)) | |
057ead22 | 1655 | { |
98e090bd ILT |
1656 | if (is_global && !v.empty()) |
1657 | { | |
1658 | *pversion = v.c_str(); | |
1659 | // If we get the version from a version script, then we | |
1660 | // are also the default version. | |
1661 | is_default_version = true; | |
1662 | } | |
057ead22 | 1663 | } |
55a93433 ILT |
1664 | } |
1665 | ||
8c500701 ILT |
1666 | Symbol* oldsym; |
1667 | Sized_symbol<size>* sym; | |
1668 | ||
1669 | bool add_to_table = false; | |
1670 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
1671 | bool add_def_to_table = false; | |
1672 | typename Symbol_table_type::iterator add_def_loc = this->table_.end(); | |
1673 | ||
ead1e424 ILT |
1674 | if (only_if_ref) |
1675 | { | |
306d9ef0 | 1676 | oldsym = this->lookup(*pname, *pversion); |
8c500701 ILT |
1677 | if (oldsym == NULL && is_default_version) |
1678 | oldsym = this->lookup(*pname, NULL); | |
f6ce93d6 | 1679 | if (oldsym == NULL || !oldsym->is_undefined()) |
ead1e424 | 1680 | return NULL; |
306d9ef0 ILT |
1681 | |
1682 | *pname = oldsym->name(); | |
8c500701 ILT |
1683 | if (!is_default_version) |
1684 | *pversion = oldsym->version(); | |
ead1e424 ILT |
1685 | } |
1686 | else | |
1687 | { | |
14b31740 | 1688 | // Canonicalize NAME and VERSION. |
f0641a0b | 1689 | Stringpool::Key name_key; |
cfd73a4e | 1690 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 1691 | |
14b31740 | 1692 | Stringpool::Key version_key = 0; |
306d9ef0 | 1693 | if (*pversion != NULL) |
cfd73a4e | 1694 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 1695 | |
ead1e424 | 1696 | Symbol* const snull = NULL; |
ead1e424 | 1697 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
1698 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
1699 | version_key), | |
ead1e424 ILT |
1700 | snull)); |
1701 | ||
8781f709 | 1702 | std::pair<typename Symbol_table_type::iterator, bool> insdefault = |
8c500701 ILT |
1703 | std::make_pair(this->table_.end(), false); |
1704 | if (is_default_version) | |
1705 | { | |
1706 | const Stringpool::Key vnull = 0; | |
8781f709 ILT |
1707 | insdefault = |
1708 | this->table_.insert(std::make_pair(std::make_pair(name_key, | |
1709 | vnull), | |
1710 | snull)); | |
8c500701 ILT |
1711 | } |
1712 | ||
ead1e424 ILT |
1713 | if (!ins.second) |
1714 | { | |
14b31740 | 1715 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 1716 | oldsym = ins.first->second; |
a3ad94ed | 1717 | gold_assert(oldsym != NULL); |
8c500701 ILT |
1718 | |
1719 | if (is_default_version) | |
1720 | { | |
1721 | Sized_symbol<size>* soldsym = | |
1722 | this->get_sized_symbol<size>(oldsym); | |
1723 | this->define_default_version<size, big_endian>(soldsym, | |
8781f709 ILT |
1724 | insdefault.second, |
1725 | insdefault.first); | |
8c500701 | 1726 | } |
ead1e424 ILT |
1727 | } |
1728 | else | |
1729 | { | |
1730 | // We haven't seen this symbol before. | |
a3ad94ed | 1731 | gold_assert(ins.first->second == NULL); |
8c500701 ILT |
1732 | |
1733 | add_to_table = true; | |
1734 | add_loc = ins.first; | |
1735 | ||
8781f709 | 1736 | if (is_default_version && !insdefault.second) |
8c500701 ILT |
1737 | { |
1738 | // We are adding NAME/VERSION, and it is the default | |
1739 | // version. We already have an entry for NAME/NULL. | |
8781f709 | 1740 | oldsym = insdefault.first->second; |
8c500701 ILT |
1741 | *resolve_oldsym = true; |
1742 | } | |
1743 | else | |
1744 | { | |
1745 | oldsym = NULL; | |
1746 | ||
1747 | if (is_default_version) | |
1748 | { | |
1749 | add_def_to_table = true; | |
8781f709 | 1750 | add_def_loc = insdefault.first; |
8c500701 ILT |
1751 | } |
1752 | } | |
ead1e424 ILT |
1753 | } |
1754 | } | |
1755 | ||
8851ecca ILT |
1756 | const Target& target = parameters->target(); |
1757 | if (!target.has_make_symbol()) | |
86f2e683 ILT |
1758 | sym = new Sized_symbol<size>(); |
1759 | else | |
ead1e424 | 1760 | { |
029ba973 ILT |
1761 | Sized_target<size, big_endian>* sized_target = |
1762 | parameters->sized_target<size, big_endian>(); | |
86f2e683 ILT |
1763 | sym = sized_target->make_symbol(); |
1764 | if (sym == NULL) | |
1765 | return NULL; | |
1766 | } | |
ead1e424 | 1767 | |
86f2e683 ILT |
1768 | if (add_to_table) |
1769 | add_loc->second = sym; | |
1770 | else | |
1771 | gold_assert(oldsym != NULL); | |
ead1e424 | 1772 | |
8c500701 ILT |
1773 | if (add_def_to_table) |
1774 | add_def_loc->second = sym; | |
1775 | ||
7d1a9ebb | 1776 | *poldsym = this->get_sized_symbol<size>(oldsym); |
ead1e424 ILT |
1777 | |
1778 | return sym; | |
1779 | } | |
1780 | ||
1781 | // Define a symbol based on an Output_data. | |
1782 | ||
14b31740 | 1783 | Symbol* |
2ea97941 ILT |
1784 | Symbol_table::define_in_output_data(const char* name, |
1785 | const char* version, | |
99fff23b | 1786 | Defined defined, |
9b07f471 | 1787 | Output_data* od, |
2ea97941 ILT |
1788 | uint64_t value, |
1789 | uint64_t symsize, | |
9b07f471 ILT |
1790 | elfcpp::STT type, |
1791 | elfcpp::STB binding, | |
ead1e424 ILT |
1792 | elfcpp::STV visibility, |
1793 | unsigned char nonvis, | |
2ea97941 | 1794 | bool offset_is_from_end, |
ead1e424 ILT |
1795 | bool only_if_ref) |
1796 | { | |
8851ecca | 1797 | if (parameters->target().get_size() == 32) |
86f2e683 ILT |
1798 | { |
1799 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
99fff23b | 1800 | return this->do_define_in_output_data<32>(name, version, defined, od, |
2ea97941 | 1801 | value, symsize, type, binding, |
86f2e683 | 1802 | visibility, nonvis, |
2ea97941 | 1803 | offset_is_from_end, |
86f2e683 ILT |
1804 | only_if_ref); |
1805 | #else | |
1806 | gold_unreachable(); | |
1807 | #endif | |
1808 | } | |
8851ecca | 1809 | else if (parameters->target().get_size() == 64) |
86f2e683 ILT |
1810 | { |
1811 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
99fff23b | 1812 | return this->do_define_in_output_data<64>(name, version, defined, od, |
2ea97941 | 1813 | value, symsize, type, binding, |
86f2e683 | 1814 | visibility, nonvis, |
2ea97941 | 1815 | offset_is_from_end, |
86f2e683 ILT |
1816 | only_if_ref); |
1817 | #else | |
1818 | gold_unreachable(); | |
1819 | #endif | |
1820 | } | |
ead1e424 | 1821 | else |
a3ad94ed | 1822 | gold_unreachable(); |
ead1e424 ILT |
1823 | } |
1824 | ||
1825 | // Define a symbol in an Output_data, sized version. | |
1826 | ||
1827 | template<int size> | |
14b31740 | 1828 | Sized_symbol<size>* |
ead1e424 | 1829 | Symbol_table::do_define_in_output_data( |
2ea97941 ILT |
1830 | const char* name, |
1831 | const char* version, | |
99fff23b | 1832 | Defined defined, |
ead1e424 | 1833 | Output_data* od, |
2ea97941 ILT |
1834 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1835 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
ead1e424 ILT |
1836 | elfcpp::STT type, |
1837 | elfcpp::STB binding, | |
1838 | elfcpp::STV visibility, | |
1839 | unsigned char nonvis, | |
2ea97941 | 1840 | bool offset_is_from_end, |
ead1e424 ILT |
1841 | bool only_if_ref) |
1842 | { | |
1843 | Sized_symbol<size>* sym; | |
86f2e683 | 1844 | Sized_symbol<size>* oldsym; |
8c500701 | 1845 | bool resolve_oldsym; |
ead1e424 | 1846 | |
8851ecca | 1847 | if (parameters->target().is_big_endian()) |
193a53d9 ILT |
1848 | { |
1849 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
2ea97941 | 1850 | sym = this->define_special_symbol<size, true>(&name, &version, |
8c500701 ILT |
1851 | only_if_ref, &oldsym, |
1852 | &resolve_oldsym); | |
193a53d9 ILT |
1853 | #else |
1854 | gold_unreachable(); | |
1855 | #endif | |
1856 | } | |
ead1e424 | 1857 | else |
193a53d9 ILT |
1858 | { |
1859 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
2ea97941 | 1860 | sym = this->define_special_symbol<size, false>(&name, &version, |
8c500701 ILT |
1861 | only_if_ref, &oldsym, |
1862 | &resolve_oldsym); | |
193a53d9 ILT |
1863 | #else |
1864 | gold_unreachable(); | |
1865 | #endif | |
1866 | } | |
ead1e424 ILT |
1867 | |
1868 | if (sym == NULL) | |
14b31740 | 1869 | return NULL; |
ead1e424 | 1870 | |
2ea97941 | 1871 | sym->init_output_data(name, version, od, value, symsize, type, binding, |
5146f448 CC |
1872 | visibility, nonvis, offset_is_from_end, |
1873 | defined == PREDEFINED); | |
14b31740 | 1874 | |
e5756efb | 1875 | if (oldsym == NULL) |
55a93433 ILT |
1876 | { |
1877 | if (binding == elfcpp::STB_LOCAL | |
2ea97941 | 1878 | || this->version_script_.symbol_is_local(name)) |
55a93433 | 1879 | this->force_local(sym); |
2ea97941 | 1880 | else if (version != NULL) |
75517b77 | 1881 | sym->set_is_default(); |
55a93433 ILT |
1882 | return sym; |
1883 | } | |
86f2e683 | 1884 | |
99fff23b | 1885 | if (Symbol_table::should_override_with_special(oldsym, defined)) |
e5756efb | 1886 | this->override_with_special(oldsym, sym); |
8c500701 ILT |
1887 | |
1888 | if (resolve_oldsym) | |
1889 | return sym; | |
1890 | else | |
1891 | { | |
1892 | delete sym; | |
1893 | return oldsym; | |
1894 | } | |
ead1e424 ILT |
1895 | } |
1896 | ||
1897 | // Define a symbol based on an Output_segment. | |
1898 | ||
14b31740 | 1899 | Symbol* |
2ea97941 | 1900 | Symbol_table::define_in_output_segment(const char* name, |
99fff23b ILT |
1901 | const char* version, |
1902 | Defined defined, | |
1903 | Output_segment* os, | |
2ea97941 ILT |
1904 | uint64_t value, |
1905 | uint64_t symsize, | |
9b07f471 ILT |
1906 | elfcpp::STT type, |
1907 | elfcpp::STB binding, | |
ead1e424 ILT |
1908 | elfcpp::STV visibility, |
1909 | unsigned char nonvis, | |
2ea97941 | 1910 | Symbol::Segment_offset_base offset_base, |
ead1e424 ILT |
1911 | bool only_if_ref) |
1912 | { | |
8851ecca | 1913 | if (parameters->target().get_size() == 32) |
86f2e683 ILT |
1914 | { |
1915 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
99fff23b | 1916 | return this->do_define_in_output_segment<32>(name, version, defined, os, |
2ea97941 | 1917 | value, symsize, type, |
86f2e683 | 1918 | binding, visibility, nonvis, |
2ea97941 | 1919 | offset_base, only_if_ref); |
86f2e683 ILT |
1920 | #else |
1921 | gold_unreachable(); | |
1922 | #endif | |
1923 | } | |
8851ecca | 1924 | else if (parameters->target().get_size() == 64) |
86f2e683 ILT |
1925 | { |
1926 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
99fff23b | 1927 | return this->do_define_in_output_segment<64>(name, version, defined, os, |
2ea97941 | 1928 | value, symsize, type, |
86f2e683 | 1929 | binding, visibility, nonvis, |
2ea97941 | 1930 | offset_base, only_if_ref); |
86f2e683 ILT |
1931 | #else |
1932 | gold_unreachable(); | |
1933 | #endif | |
1934 | } | |
ead1e424 | 1935 | else |
a3ad94ed | 1936 | gold_unreachable(); |
ead1e424 ILT |
1937 | } |
1938 | ||
1939 | // Define a symbol in an Output_segment, sized version. | |
1940 | ||
1941 | template<int size> | |
14b31740 | 1942 | Sized_symbol<size>* |
ead1e424 | 1943 | Symbol_table::do_define_in_output_segment( |
2ea97941 ILT |
1944 | const char* name, |
1945 | const char* version, | |
99fff23b | 1946 | Defined defined, |
ead1e424 | 1947 | Output_segment* os, |
2ea97941 ILT |
1948 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
1949 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
ead1e424 ILT |
1950 | elfcpp::STT type, |
1951 | elfcpp::STB binding, | |
1952 | elfcpp::STV visibility, | |
1953 | unsigned char nonvis, | |
2ea97941 | 1954 | Symbol::Segment_offset_base offset_base, |
ead1e424 ILT |
1955 | bool only_if_ref) |
1956 | { | |
1957 | Sized_symbol<size>* sym; | |
86f2e683 | 1958 | Sized_symbol<size>* oldsym; |
8c500701 | 1959 | bool resolve_oldsym; |
ead1e424 | 1960 | |
8851ecca | 1961 | if (parameters->target().is_big_endian()) |
9025d29d ILT |
1962 | { |
1963 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
2ea97941 | 1964 | sym = this->define_special_symbol<size, true>(&name, &version, |
8c500701 ILT |
1965 | only_if_ref, &oldsym, |
1966 | &resolve_oldsym); | |
9025d29d ILT |
1967 | #else |
1968 | gold_unreachable(); | |
1969 | #endif | |
1970 | } | |
ead1e424 | 1971 | else |
9025d29d ILT |
1972 | { |
1973 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
2ea97941 | 1974 | sym = this->define_special_symbol<size, false>(&name, &version, |
8c500701 ILT |
1975 | only_if_ref, &oldsym, |
1976 | &resolve_oldsym); | |
9025d29d ILT |
1977 | #else |
1978 | gold_unreachable(); | |
1979 | #endif | |
1980 | } | |
ead1e424 ILT |
1981 | |
1982 | if (sym == NULL) | |
14b31740 | 1983 | return NULL; |
ead1e424 | 1984 | |
2ea97941 | 1985 | sym->init_output_segment(name, version, os, value, symsize, type, binding, |
5146f448 CC |
1986 | visibility, nonvis, offset_base, |
1987 | defined == PREDEFINED); | |
14b31740 | 1988 | |
e5756efb | 1989 | if (oldsym == NULL) |
55a93433 ILT |
1990 | { |
1991 | if (binding == elfcpp::STB_LOCAL | |
2ea97941 | 1992 | || this->version_script_.symbol_is_local(name)) |
55a93433 | 1993 | this->force_local(sym); |
2ea97941 | 1994 | else if (version != NULL) |
75517b77 | 1995 | sym->set_is_default(); |
55a93433 ILT |
1996 | return sym; |
1997 | } | |
86f2e683 | 1998 | |
99fff23b | 1999 | if (Symbol_table::should_override_with_special(oldsym, defined)) |
e5756efb | 2000 | this->override_with_special(oldsym, sym); |
8c500701 ILT |
2001 | |
2002 | if (resolve_oldsym) | |
2003 | return sym; | |
2004 | else | |
2005 | { | |
2006 | delete sym; | |
2007 | return oldsym; | |
2008 | } | |
ead1e424 ILT |
2009 | } |
2010 | ||
2011 | // Define a special symbol with a constant value. It is a multiple | |
2012 | // definition error if this symbol is already defined. | |
2013 | ||
14b31740 | 2014 | Symbol* |
2ea97941 ILT |
2015 | Symbol_table::define_as_constant(const char* name, |
2016 | const char* version, | |
99fff23b | 2017 | Defined defined, |
2ea97941 ILT |
2018 | uint64_t value, |
2019 | uint64_t symsize, | |
9b07f471 ILT |
2020 | elfcpp::STT type, |
2021 | elfcpp::STB binding, | |
2022 | elfcpp::STV visibility, | |
2023 | unsigned char nonvis, | |
caa9d5d9 ILT |
2024 | bool only_if_ref, |
2025 | bool force_override) | |
ead1e424 | 2026 | { |
8851ecca | 2027 | if (parameters->target().get_size() == 32) |
86f2e683 ILT |
2028 | { |
2029 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
99fff23b | 2030 | return this->do_define_as_constant<32>(name, version, defined, value, |
2ea97941 | 2031 | symsize, type, binding, |
caa9d5d9 ILT |
2032 | visibility, nonvis, only_if_ref, |
2033 | force_override); | |
86f2e683 ILT |
2034 | #else |
2035 | gold_unreachable(); | |
2036 | #endif | |
2037 | } | |
8851ecca | 2038 | else if (parameters->target().get_size() == 64) |
86f2e683 ILT |
2039 | { |
2040 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
99fff23b | 2041 | return this->do_define_as_constant<64>(name, version, defined, value, |
2ea97941 | 2042 | symsize, type, binding, |
caa9d5d9 ILT |
2043 | visibility, nonvis, only_if_ref, |
2044 | force_override); | |
86f2e683 ILT |
2045 | #else |
2046 | gold_unreachable(); | |
2047 | #endif | |
2048 | } | |
ead1e424 | 2049 | else |
a3ad94ed | 2050 | gold_unreachable(); |
ead1e424 ILT |
2051 | } |
2052 | ||
2053 | // Define a symbol as a constant, sized version. | |
2054 | ||
2055 | template<int size> | |
14b31740 | 2056 | Sized_symbol<size>* |
ead1e424 | 2057 | Symbol_table::do_define_as_constant( |
2ea97941 ILT |
2058 | const char* name, |
2059 | const char* version, | |
99fff23b | 2060 | Defined defined, |
2ea97941 ILT |
2061 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
2062 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
ead1e424 ILT |
2063 | elfcpp::STT type, |
2064 | elfcpp::STB binding, | |
2065 | elfcpp::STV visibility, | |
2066 | unsigned char nonvis, | |
caa9d5d9 ILT |
2067 | bool only_if_ref, |
2068 | bool force_override) | |
ead1e424 ILT |
2069 | { |
2070 | Sized_symbol<size>* sym; | |
86f2e683 | 2071 | Sized_symbol<size>* oldsym; |
8c500701 | 2072 | bool resolve_oldsym; |
ead1e424 | 2073 | |
8851ecca | 2074 | if (parameters->target().is_big_endian()) |
9025d29d ILT |
2075 | { |
2076 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
2ea97941 | 2077 | sym = this->define_special_symbol<size, true>(&name, &version, |
8c500701 ILT |
2078 | only_if_ref, &oldsym, |
2079 | &resolve_oldsym); | |
9025d29d ILT |
2080 | #else |
2081 | gold_unreachable(); | |
2082 | #endif | |
2083 | } | |
ead1e424 | 2084 | else |
9025d29d ILT |
2085 | { |
2086 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
2ea97941 | 2087 | sym = this->define_special_symbol<size, false>(&name, &version, |
8c500701 ILT |
2088 | only_if_ref, &oldsym, |
2089 | &resolve_oldsym); | |
9025d29d ILT |
2090 | #else |
2091 | gold_unreachable(); | |
2092 | #endif | |
2093 | } | |
ead1e424 ILT |
2094 | |
2095 | if (sym == NULL) | |
14b31740 | 2096 | return NULL; |
ead1e424 | 2097 | |
2ea97941 | 2098 | sym->init_constant(name, version, value, symsize, type, binding, visibility, |
5146f448 | 2099 | nonvis, defined == PREDEFINED); |
14b31740 | 2100 | |
e5756efb | 2101 | if (oldsym == NULL) |
55a93433 | 2102 | { |
686c8caf ILT |
2103 | // Version symbols are absolute symbols with name == version. |
2104 | // We don't want to force them to be local. | |
2ea97941 ILT |
2105 | if ((version == NULL |
2106 | || name != version | |
2107 | || value != 0) | |
686c8caf | 2108 | && (binding == elfcpp::STB_LOCAL |
2ea97941 | 2109 | || this->version_script_.symbol_is_local(name))) |
55a93433 | 2110 | this->force_local(sym); |
2ea97941 ILT |
2111 | else if (version != NULL |
2112 | && (name != version || value != 0)) | |
75517b77 | 2113 | sym->set_is_default(); |
55a93433 ILT |
2114 | return sym; |
2115 | } | |
86f2e683 | 2116 | |
99fff23b ILT |
2117 | if (force_override |
2118 | || Symbol_table::should_override_with_special(oldsym, defined)) | |
e5756efb | 2119 | this->override_with_special(oldsym, sym); |
8c500701 ILT |
2120 | |
2121 | if (resolve_oldsym) | |
2122 | return sym; | |
2123 | else | |
2124 | { | |
2125 | delete sym; | |
2126 | return oldsym; | |
2127 | } | |
ead1e424 ILT |
2128 | } |
2129 | ||
2130 | // Define a set of symbols in output sections. | |
2131 | ||
2132 | void | |
9b07f471 | 2133 | Symbol_table::define_symbols(const Layout* layout, int count, |
a445fddf ILT |
2134 | const Define_symbol_in_section* p, |
2135 | bool only_if_ref) | |
ead1e424 ILT |
2136 | { |
2137 | for (int i = 0; i < count; ++i, ++p) | |
2138 | { | |
2139 | Output_section* os = layout->find_output_section(p->output_section); | |
2140 | if (os != NULL) | |
99fff23b | 2141 | this->define_in_output_data(p->name, NULL, PREDEFINED, os, p->value, |
14b31740 ILT |
2142 | p->size, p->type, p->binding, |
2143 | p->visibility, p->nonvis, | |
a445fddf ILT |
2144 | p->offset_is_from_end, |
2145 | only_if_ref || p->only_if_ref); | |
ead1e424 | 2146 | else |
99fff23b ILT |
2147 | this->define_as_constant(p->name, NULL, PREDEFINED, 0, p->size, |
2148 | p->type, p->binding, p->visibility, p->nonvis, | |
caa9d5d9 ILT |
2149 | only_if_ref || p->only_if_ref, |
2150 | false); | |
ead1e424 ILT |
2151 | } |
2152 | } | |
2153 | ||
2154 | // Define a set of symbols in output segments. | |
2155 | ||
2156 | void | |
9b07f471 | 2157 | Symbol_table::define_symbols(const Layout* layout, int count, |
a445fddf ILT |
2158 | const Define_symbol_in_segment* p, |
2159 | bool only_if_ref) | |
ead1e424 ILT |
2160 | { |
2161 | for (int i = 0; i < count; ++i, ++p) | |
2162 | { | |
2163 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
2164 | p->segment_flags_set, | |
2165 | p->segment_flags_clear); | |
2166 | if (os != NULL) | |
99fff23b | 2167 | this->define_in_output_segment(p->name, NULL, PREDEFINED, os, p->value, |
14b31740 ILT |
2168 | p->size, p->type, p->binding, |
2169 | p->visibility, p->nonvis, | |
a445fddf ILT |
2170 | p->offset_base, |
2171 | only_if_ref || p->only_if_ref); | |
ead1e424 | 2172 | else |
99fff23b ILT |
2173 | this->define_as_constant(p->name, NULL, PREDEFINED, 0, p->size, |
2174 | p->type, p->binding, p->visibility, p->nonvis, | |
caa9d5d9 ILT |
2175 | only_if_ref || p->only_if_ref, |
2176 | false); | |
ead1e424 ILT |
2177 | } |
2178 | } | |
2179 | ||
46fe1623 ILT |
2180 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
2181 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
2182 | // the offset within POSD. | |
2183 | ||
2184 | template<int size> | |
2185 | void | |
fe8718a4 | 2186 | Symbol_table::define_with_copy_reloc( |
fe8718a4 ILT |
2187 | Sized_symbol<size>* csym, |
2188 | Output_data* posd, | |
2ea97941 | 2189 | typename elfcpp::Elf_types<size>::Elf_Addr value) |
46fe1623 ILT |
2190 | { |
2191 | gold_assert(csym->is_from_dynobj()); | |
2192 | gold_assert(!csym->is_copied_from_dynobj()); | |
2ea97941 ILT |
2193 | Object* object = csym->object(); |
2194 | gold_assert(object->is_dynamic()); | |
2195 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
46fe1623 ILT |
2196 | |
2197 | // Our copied variable has to override any variable in a shared | |
2198 | // library. | |
2199 | elfcpp::STB binding = csym->binding(); | |
2200 | if (binding == elfcpp::STB_WEAK) | |
2201 | binding = elfcpp::STB_GLOBAL; | |
2202 | ||
99fff23b | 2203 | this->define_in_output_data(csym->name(), csym->version(), COPY, |
2ea97941 | 2204 | posd, value, csym->symsize(), |
46fe1623 ILT |
2205 | csym->type(), binding, |
2206 | csym->visibility(), csym->nonvis(), | |
2207 | false, false); | |
2208 | ||
2209 | csym->set_is_copied_from_dynobj(); | |
2210 | csym->set_needs_dynsym_entry(); | |
2211 | ||
2212 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
2213 | ||
2214 | // We have now defined all aliases, but we have not entered them all | |
2215 | // in the copied_symbol_dynobjs_ map. | |
2216 | if (csym->has_alias()) | |
2217 | { | |
2218 | Symbol* sym = csym; | |
2219 | while (true) | |
2220 | { | |
2221 | sym = this->weak_aliases_[sym]; | |
2222 | if (sym == csym) | |
2223 | break; | |
2224 | gold_assert(sym->output_data() == posd); | |
2225 | ||
2226 | sym->set_is_copied_from_dynobj(); | |
2227 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
2228 | } | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
2233 | // the original definition was found. | |
2234 | ||
2235 | Dynobj* | |
2236 | Symbol_table::get_copy_source(const Symbol* sym) const | |
2237 | { | |
2238 | gold_assert(sym->is_copied_from_dynobj()); | |
2239 | Copied_symbol_dynobjs::const_iterator p = | |
2240 | this->copied_symbol_dynobjs_.find(sym); | |
2241 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
2242 | return p->second; | |
2243 | } | |
2244 | ||
f3e9c5c5 ILT |
2245 | // Add any undefined symbols named on the command line. |
2246 | ||
2247 | void | |
88a4108b | 2248 | Symbol_table::add_undefined_symbols_from_command_line(Layout* layout) |
f3e9c5c5 | 2249 | { |
88a4108b ILT |
2250 | if (parameters->options().any_undefined() |
2251 | || layout->script_options()->any_unreferenced()) | |
f3e9c5c5 ILT |
2252 | { |
2253 | if (parameters->target().get_size() == 32) | |
2254 | { | |
5adf9721 | 2255 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
88a4108b | 2256 | this->do_add_undefined_symbols_from_command_line<32>(layout); |
f3e9c5c5 ILT |
2257 | #else |
2258 | gold_unreachable(); | |
2259 | #endif | |
2260 | } | |
2261 | else if (parameters->target().get_size() == 64) | |
2262 | { | |
2263 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
88a4108b | 2264 | this->do_add_undefined_symbols_from_command_line<64>(layout); |
f3e9c5c5 ILT |
2265 | #else |
2266 | gold_unreachable(); | |
2267 | #endif | |
2268 | } | |
2269 | else | |
2270 | gold_unreachable(); | |
2271 | } | |
2272 | } | |
2273 | ||
2274 | template<int size> | |
2275 | void | |
88a4108b | 2276 | Symbol_table::do_add_undefined_symbols_from_command_line(Layout* layout) |
f3e9c5c5 ILT |
2277 | { |
2278 | for (options::String_set::const_iterator p = | |
2279 | parameters->options().undefined_begin(); | |
2280 | p != parameters->options().undefined_end(); | |
2281 | ++p) | |
88a4108b | 2282 | this->add_undefined_symbol_from_command_line<size>(p->c_str()); |
f3e9c5c5 | 2283 | |
88a4108b ILT |
2284 | for (Script_options::referenced_const_iterator p = |
2285 | layout->script_options()->referenced_begin(); | |
2286 | p != layout->script_options()->referenced_end(); | |
2287 | ++p) | |
2288 | this->add_undefined_symbol_from_command_line<size>(p->c_str()); | |
2289 | } | |
2290 | ||
2291 | template<int size> | |
2292 | void | |
2293 | Symbol_table::add_undefined_symbol_from_command_line(const char* name) | |
2294 | { | |
2295 | if (this->lookup(name) != NULL) | |
2296 | return; | |
f3e9c5c5 | 2297 | |
88a4108b | 2298 | const char* version = NULL; |
f3e9c5c5 | 2299 | |
88a4108b ILT |
2300 | Sized_symbol<size>* sym; |
2301 | Sized_symbol<size>* oldsym; | |
2302 | bool resolve_oldsym; | |
2303 | if (parameters->target().is_big_endian()) | |
2304 | { | |
f3e9c5c5 | 2305 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) |
88a4108b ILT |
2306 | sym = this->define_special_symbol<size, true>(&name, &version, |
2307 | false, &oldsym, | |
2308 | &resolve_oldsym); | |
f3e9c5c5 | 2309 | #else |
88a4108b | 2310 | gold_unreachable(); |
f3e9c5c5 | 2311 | #endif |
88a4108b ILT |
2312 | } |
2313 | else | |
2314 | { | |
f3e9c5c5 | 2315 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) |
88a4108b ILT |
2316 | sym = this->define_special_symbol<size, false>(&name, &version, |
2317 | false, &oldsym, | |
2318 | &resolve_oldsym); | |
f3e9c5c5 | 2319 | #else |
88a4108b | 2320 | gold_unreachable(); |
f3e9c5c5 | 2321 | #endif |
88a4108b | 2322 | } |
f3e9c5c5 | 2323 | |
88a4108b | 2324 | gold_assert(oldsym == NULL); |
f3e9c5c5 | 2325 | |
88a4108b ILT |
2326 | sym->init_undefined(name, version, elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, |
2327 | elfcpp::STV_DEFAULT, 0); | |
2328 | ++this->saw_undefined_; | |
f3e9c5c5 ILT |
2329 | } |
2330 | ||
a3ad94ed ILT |
2331 | // Set the dynamic symbol indexes. INDEX is the index of the first |
2332 | // global dynamic symbol. Pointers to the symbols are stored into the | |
2333 | // vector SYMS. The names are added to DYNPOOL. This returns an | |
2334 | // updated dynamic symbol index. | |
2335 | ||
2336 | unsigned int | |
9b07f471 | 2337 | Symbol_table::set_dynsym_indexes(unsigned int index, |
a3ad94ed | 2338 | std::vector<Symbol*>* syms, |
14b31740 ILT |
2339 | Stringpool* dynpool, |
2340 | Versions* versions) | |
a3ad94ed ILT |
2341 | { |
2342 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
2343 | p != this->table_.end(); | |
2344 | ++p) | |
2345 | { | |
2346 | Symbol* sym = p->second; | |
16649710 ILT |
2347 | |
2348 | // Note that SYM may already have a dynamic symbol index, since | |
2349 | // some symbols appear more than once in the symbol table, with | |
2350 | // and without a version. | |
2351 | ||
ce97fa81 | 2352 | if (!sym->should_add_dynsym_entry(this)) |
16649710 ILT |
2353 | sym->set_dynsym_index(-1U); |
2354 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
2355 | { |
2356 | sym->set_dynsym_index(index); | |
2357 | ++index; | |
2358 | syms->push_back(sym); | |
cfd73a4e | 2359 | dynpool->add(sym->name(), false, NULL); |
14b31740 ILT |
2360 | |
2361 | // Record any version information. | |
09124467 ILT |
2362 | if (sym->version() != NULL) |
2363 | versions->record_version(this, dynpool, sym); | |
594c8e5e ILT |
2364 | |
2365 | // If the symbol is defined in a dynamic object and is | |
2366 | // referenced in a regular object, then mark the dynamic | |
2367 | // object as needed. This is used to implement --as-needed. | |
2368 | if (sym->is_from_dynobj() && sym->in_reg()) | |
2369 | sym->object()->set_is_needed(); | |
a3ad94ed ILT |
2370 | } |
2371 | } | |
2372 | ||
14b31740 ILT |
2373 | // Finish up the versions. In some cases this may add new dynamic |
2374 | // symbols. | |
9b07f471 | 2375 | index = versions->finalize(this, index, syms); |
14b31740 | 2376 | |
a3ad94ed ILT |
2377 | return index; |
2378 | } | |
2379 | ||
c06b7b0b | 2380 | // Set the final values for all the symbols. The index of the first |
55a93433 ILT |
2381 | // global symbol in the output file is *PLOCAL_SYMCOUNT. Record the |
2382 | // file offset OFF. Add their names to POOL. Return the new file | |
2383 | // offset. Update *PLOCAL_SYMCOUNT if necessary. | |
54dc6425 | 2384 | |
75f65a3e | 2385 | off_t |
55a93433 ILT |
2386 | Symbol_table::finalize(off_t off, off_t dynoff, size_t dyn_global_index, |
2387 | size_t dyncount, Stringpool* pool, | |
ca09d69a | 2388 | unsigned int* plocal_symcount) |
54dc6425 | 2389 | { |
f6ce93d6 ILT |
2390 | off_t ret; |
2391 | ||
55a93433 ILT |
2392 | gold_assert(*plocal_symcount != 0); |
2393 | this->first_global_index_ = *plocal_symcount; | |
c06b7b0b | 2394 | |
16649710 ILT |
2395 | this->dynamic_offset_ = dynoff; |
2396 | this->first_dynamic_global_index_ = dyn_global_index; | |
2397 | this->dynamic_count_ = dyncount; | |
2398 | ||
8851ecca | 2399 | if (parameters->target().get_size() == 32) |
9025d29d ILT |
2400 | { |
2401 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
55a93433 | 2402 | ret = this->sized_finalize<32>(off, pool, plocal_symcount); |
9025d29d ILT |
2403 | #else |
2404 | gold_unreachable(); | |
2405 | #endif | |
2406 | } | |
8851ecca | 2407 | else if (parameters->target().get_size() == 64) |
9025d29d ILT |
2408 | { |
2409 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
55a93433 | 2410 | ret = this->sized_finalize<64>(off, pool, plocal_symcount); |
9025d29d ILT |
2411 | #else |
2412 | gold_unreachable(); | |
2413 | #endif | |
2414 | } | |
61ba1cf9 | 2415 | else |
a3ad94ed | 2416 | gold_unreachable(); |
f6ce93d6 ILT |
2417 | |
2418 | // Now that we have the final symbol table, we can reliably note | |
2419 | // which symbols should get warnings. | |
cb295612 | 2420 | this->warnings_.note_warnings(this); |
f6ce93d6 ILT |
2421 | |
2422 | return ret; | |
75f65a3e ILT |
2423 | } |
2424 | ||
55a93433 ILT |
2425 | // SYM is going into the symbol table at *PINDEX. Add the name to |
2426 | // POOL, update *PINDEX and *POFF. | |
2427 | ||
2428 | template<int size> | |
2429 | void | |
2430 | Symbol_table::add_to_final_symtab(Symbol* sym, Stringpool* pool, | |
2431 | unsigned int* pindex, off_t* poff) | |
2432 | { | |
2433 | sym->set_symtab_index(*pindex); | |
6d1c4efb ILT |
2434 | if (sym->version() == NULL || !parameters->options().relocatable()) |
2435 | pool->add(sym->name(), false, NULL); | |
2436 | else | |
2437 | pool->add(sym->versioned_name(), true, NULL); | |
55a93433 ILT |
2438 | ++*pindex; |
2439 | *poff += elfcpp::Elf_sizes<size>::sym_size; | |
2440 | } | |
2441 | ||
ead1e424 ILT |
2442 | // Set the final value for all the symbols. This is called after |
2443 | // Layout::finalize, so all the output sections have their final | |
2444 | // address. | |
75f65a3e ILT |
2445 | |
2446 | template<int size> | |
2447 | off_t | |
55a93433 ILT |
2448 | Symbol_table::sized_finalize(off_t off, Stringpool* pool, |
2449 | unsigned int* plocal_symcount) | |
75f65a3e | 2450 | { |
ead1e424 | 2451 | off = align_address(off, size >> 3); |
75f65a3e ILT |
2452 | this->offset_ = off; |
2453 | ||
55a93433 ILT |
2454 | unsigned int index = *plocal_symcount; |
2455 | const unsigned int orig_index = index; | |
c06b7b0b | 2456 | |
55a93433 ILT |
2457 | // First do all the symbols which have been forced to be local, as |
2458 | // they must appear before all global symbols. | |
2459 | for (Forced_locals::iterator p = this->forced_locals_.begin(); | |
2460 | p != this->forced_locals_.end(); | |
2461 | ++p) | |
2462 | { | |
2463 | Symbol* sym = *p; | |
2464 | gold_assert(sym->is_forced_local()); | |
2465 | if (this->sized_finalize_symbol<size>(sym)) | |
2466 | { | |
2467 | this->add_to_final_symtab<size>(sym, pool, &index, &off); | |
2468 | ++*plocal_symcount; | |
2469 | } | |
2470 | } | |
2471 | ||
2472 | // Now do all the remaining symbols. | |
c06b7b0b ILT |
2473 | for (Symbol_table_type::iterator p = this->table_.begin(); |
2474 | p != this->table_.end(); | |
2475 | ++p) | |
54dc6425 | 2476 | { |
55a93433 ILT |
2477 | Symbol* sym = p->second; |
2478 | if (this->sized_finalize_symbol<size>(sym)) | |
2479 | this->add_to_final_symtab<size>(sym, pool, &index, &off); | |
2480 | } | |
54dc6425 | 2481 | |
55a93433 | 2482 | this->output_count_ = index - orig_index; |
a3ad94ed | 2483 | |
55a93433 ILT |
2484 | return off; |
2485 | } | |
75f65a3e | 2486 | |
c0a62865 DK |
2487 | // Compute the final value of SYM and store status in location PSTATUS. |
2488 | // During relaxation, this may be called multiple times for a symbol to | |
2489 | // compute its would-be final value in each relaxation pass. | |
008db82e | 2490 | |
55a93433 | 2491 | template<int size> |
c0a62865 DK |
2492 | typename Sized_symbol<size>::Value_type |
2493 | Symbol_table::compute_final_value( | |
2494 | const Sized_symbol<size>* sym, | |
2495 | Compute_final_value_status* pstatus) const | |
55a93433 | 2496 | { |
ef9beddf | 2497 | typedef typename Sized_symbol<size>::Value_type Value_type; |
2ea97941 | 2498 | Value_type value; |
ead1e424 | 2499 | |
55a93433 ILT |
2500 | switch (sym->source()) |
2501 | { | |
2502 | case Symbol::FROM_OBJECT: | |
2503 | { | |
d491d34e | 2504 | bool is_ordinary; |
2ea97941 | 2505 | unsigned int shndx = sym->shndx(&is_ordinary); |
ead1e424 | 2506 | |
d491d34e | 2507 | if (!is_ordinary |
2ea97941 ILT |
2508 | && shndx != elfcpp::SHN_ABS |
2509 | && !Symbol::is_common_shndx(shndx)) | |
55a93433 | 2510 | { |
c0a62865 DK |
2511 | *pstatus = CFVS_UNSUPPORTED_SYMBOL_SECTION; |
2512 | return 0; | |
ead1e424 | 2513 | } |
ead1e424 | 2514 | |
55a93433 ILT |
2515 | Object* symobj = sym->object(); |
2516 | if (symobj->is_dynamic()) | |
ead1e424 | 2517 | { |
2ea97941 ILT |
2518 | value = 0; |
2519 | shndx = elfcpp::SHN_UNDEF; | |
ead1e424 | 2520 | } |
89fc3421 CC |
2521 | else if (symobj->pluginobj() != NULL) |
2522 | { | |
2ea97941 ILT |
2523 | value = 0; |
2524 | shndx = elfcpp::SHN_UNDEF; | |
89fc3421 | 2525 | } |
2ea97941 ILT |
2526 | else if (shndx == elfcpp::SHN_UNDEF) |
2527 | value = 0; | |
d491d34e | 2528 | else if (!is_ordinary |
2ea97941 ILT |
2529 | && (shndx == elfcpp::SHN_ABS |
2530 | || Symbol::is_common_shndx(shndx))) | |
2531 | value = sym->value(); | |
55a93433 | 2532 | else |
ead1e424 | 2533 | { |
55a93433 | 2534 | Relobj* relobj = static_cast<Relobj*>(symobj); |
2ea97941 | 2535 | Output_section* os = relobj->output_section(shndx); |
55a93433 | 2536 | |
2ea97941 | 2537 | if (this->is_section_folded(relobj, shndx)) |
ef15dade ST |
2538 | { |
2539 | gold_assert(os == NULL); | |
2540 | // Get the os of the section it is folded onto. | |
2541 | Section_id folded = this->icf_->get_folded_section(relobj, | |
2ea97941 | 2542 | shndx); |
ef15dade ST |
2543 | gold_assert(folded.first != NULL); |
2544 | Relobj* folded_obj = reinterpret_cast<Relobj*>(folded.first); | |
d6344fb5 DK |
2545 | unsigned folded_shndx = folded.second; |
2546 | ||
2547 | os = folded_obj->output_section(folded_shndx); | |
ef15dade | 2548 | gold_assert(os != NULL); |
d6344fb5 DK |
2549 | |
2550 | // Replace (relobj, shndx) with canonical ICF input section. | |
2551 | shndx = folded_shndx; | |
2552 | relobj = folded_obj; | |
ef15dade ST |
2553 | } |
2554 | ||
d6344fb5 | 2555 | uint64_t secoff64 = relobj->output_section_offset(shndx); |
ef15dade | 2556 | if (os == NULL) |
ead1e424 | 2557 | { |
6d03d481 ST |
2558 | bool static_or_reloc = (parameters->doing_static_link() || |
2559 | parameters->options().relocatable()); | |
2560 | gold_assert(static_or_reloc || sym->dynsym_index() == -1U); | |
2561 | ||
c0a62865 DK |
2562 | *pstatus = CFVS_NO_OUTPUT_SECTION; |
2563 | return 0; | |
ead1e424 | 2564 | } |
55a93433 | 2565 | |
eff45813 CC |
2566 | if (secoff64 == -1ULL) |
2567 | { | |
2568 | // The section needs special handling (e.g., a merge section). | |
ef15dade | 2569 | |
2ea97941 | 2570 | value = os->output_address(relobj, shndx, sym->value()); |
eff45813 CC |
2571 | } |
2572 | else | |
2573 | { | |
2574 | Value_type secoff = | |
2575 | convert_types<Value_type, uint64_t>(secoff64); | |
2576 | if (sym->type() == elfcpp::STT_TLS) | |
2ea97941 | 2577 | value = sym->value() + os->tls_offset() + secoff; |
eff45813 | 2578 | else |
2ea97941 | 2579 | value = sym->value() + os->address() + secoff; |
eff45813 | 2580 | } |
ead1e424 | 2581 | } |
55a93433 ILT |
2582 | } |
2583 | break; | |
2584 | ||
2585 | case Symbol::IN_OUTPUT_DATA: | |
2586 | { | |
2587 | Output_data* od = sym->output_data(); | |
2ea97941 | 2588 | value = sym->value(); |
155a0dd7 | 2589 | if (sym->type() != elfcpp::STT_TLS) |
2ea97941 | 2590 | value += od->address(); |
155a0dd7 ILT |
2591 | else |
2592 | { | |
2593 | Output_section* os = od->output_section(); | |
2594 | gold_assert(os != NULL); | |
2ea97941 | 2595 | value += os->tls_offset() + (od->address() - os->address()); |
155a0dd7 | 2596 | } |
55a93433 | 2597 | if (sym->offset_is_from_end()) |
2ea97941 | 2598 | value += od->data_size(); |
55a93433 ILT |
2599 | } |
2600 | break; | |
2601 | ||
2602 | case Symbol::IN_OUTPUT_SEGMENT: | |
2603 | { | |
2604 | Output_segment* os = sym->output_segment(); | |
2ea97941 | 2605 | value = sym->value(); |
edfbb029 | 2606 | if (sym->type() != elfcpp::STT_TLS) |
2ea97941 | 2607 | value += os->vaddr(); |
55a93433 ILT |
2608 | switch (sym->offset_base()) |
2609 | { | |
2610 | case Symbol::SEGMENT_START: | |
2611 | break; | |
2612 | case Symbol::SEGMENT_END: | |
2ea97941 | 2613 | value += os->memsz(); |
55a93433 ILT |
2614 | break; |
2615 | case Symbol::SEGMENT_BSS: | |
2ea97941 | 2616 | value += os->filesz(); |
55a93433 ILT |
2617 | break; |
2618 | default: | |
2619 | gold_unreachable(); | |
2620 | } | |
2621 | } | |
2622 | break; | |
ead1e424 | 2623 | |
f3e9c5c5 | 2624 | case Symbol::IS_CONSTANT: |
2ea97941 | 2625 | value = sym->value(); |
55a93433 | 2626 | break; |
ead1e424 | 2627 | |
f3e9c5c5 | 2628 | case Symbol::IS_UNDEFINED: |
2ea97941 | 2629 | value = 0; |
f3e9c5c5 ILT |
2630 | break; |
2631 | ||
55a93433 ILT |
2632 | default: |
2633 | gold_unreachable(); | |
2634 | } | |
ead1e424 | 2635 | |
c0a62865 | 2636 | *pstatus = CFVS_OK; |
2ea97941 | 2637 | return value; |
c0a62865 DK |
2638 | } |
2639 | ||
2640 | // Finalize the symbol SYM. This returns true if the symbol should be | |
2641 | // added to the symbol table, false otherwise. | |
2642 | ||
2643 | template<int size> | |
2644 | bool | |
2645 | Symbol_table::sized_finalize_symbol(Symbol* unsized_sym) | |
2646 | { | |
2647 | typedef typename Sized_symbol<size>::Value_type Value_type; | |
2648 | ||
2649 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(unsized_sym); | |
2650 | ||
2651 | // The default version of a symbol may appear twice in the symbol | |
2652 | // table. We only need to finalize it once. | |
2653 | if (sym->has_symtab_index()) | |
2654 | return false; | |
2655 | ||
2656 | if (!sym->in_reg()) | |
2657 | { | |
2658 | gold_assert(!sym->has_symtab_index()); | |
2659 | sym->set_symtab_index(-1U); | |
2660 | gold_assert(sym->dynsym_index() == -1U); | |
2661 | return false; | |
2662 | } | |
2663 | ||
badc8139 RÁE |
2664 | // If the symbol is only present on plugin files, the plugin decided we |
2665 | // don't need it. | |
2666 | if (!sym->in_real_elf()) | |
2667 | { | |
2668 | gold_assert(!sym->has_symtab_index()); | |
2669 | sym->set_symtab_index(-1U); | |
2670 | return false; | |
2671 | } | |
2672 | ||
c0a62865 DK |
2673 | // Compute final symbol value. |
2674 | Compute_final_value_status status; | |
2ea97941 | 2675 | Value_type value = this->compute_final_value(sym, &status); |
c0a62865 DK |
2676 | |
2677 | switch (status) | |
2678 | { | |
2679 | case CFVS_OK: | |
2680 | break; | |
2681 | case CFVS_UNSUPPORTED_SYMBOL_SECTION: | |
2682 | { | |
2683 | bool is_ordinary; | |
2ea97941 | 2684 | unsigned int shndx = sym->shndx(&is_ordinary); |
c0a62865 | 2685 | gold_error(_("%s: unsupported symbol section 0x%x"), |
2ea97941 | 2686 | sym->demangled_name().c_str(), shndx); |
c0a62865 DK |
2687 | } |
2688 | break; | |
2689 | case CFVS_NO_OUTPUT_SECTION: | |
2690 | sym->set_symtab_index(-1U); | |
2691 | return false; | |
2692 | default: | |
2693 | gold_unreachable(); | |
2694 | } | |
2695 | ||
2ea97941 | 2696 | sym->set_value(value); |
9e2dcb77 | 2697 | |
8c604651 CS |
2698 | if (parameters->options().strip_all() |
2699 | || !parameters->options().should_retain_symbol(sym->name())) | |
55a93433 ILT |
2700 | { |
2701 | sym->set_symtab_index(-1U); | |
2702 | return false; | |
54dc6425 | 2703 | } |
75f65a3e | 2704 | |
55a93433 | 2705 | return true; |
54dc6425 ILT |
2706 | } |
2707 | ||
61ba1cf9 ILT |
2708 | // Write out the global symbols. |
2709 | ||
2710 | void | |
fd9d194f | 2711 | Symbol_table::write_globals(const Stringpool* sympool, |
d491d34e ILT |
2712 | const Stringpool* dynpool, |
2713 | Output_symtab_xindex* symtab_xindex, | |
2714 | Output_symtab_xindex* dynsym_xindex, | |
2715 | Output_file* of) const | |
61ba1cf9 | 2716 | { |
8851ecca | 2717 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 2718 | { |
9025d29d | 2719 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca | 2720 | case Parameters::TARGET_32_LITTLE: |
fd9d194f | 2721 | this->sized_write_globals<32, false>(sympool, dynpool, symtab_xindex, |
d491d34e | 2722 | dynsym_xindex, of); |
8851ecca | 2723 | break; |
9025d29d | 2724 | #endif |
8851ecca ILT |
2725 | #ifdef HAVE_TARGET_32_BIG |
2726 | case Parameters::TARGET_32_BIG: | |
fd9d194f | 2727 | this->sized_write_globals<32, true>(sympool, dynpool, symtab_xindex, |
d491d34e | 2728 | dynsym_xindex, of); |
8851ecca | 2729 | break; |
9025d29d | 2730 | #endif |
9025d29d | 2731 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca | 2732 | case Parameters::TARGET_64_LITTLE: |
fd9d194f | 2733 | this->sized_write_globals<64, false>(sympool, dynpool, symtab_xindex, |
d491d34e | 2734 | dynsym_xindex, of); |
8851ecca | 2735 | break; |
9025d29d | 2736 | #endif |
8851ecca ILT |
2737 | #ifdef HAVE_TARGET_64_BIG |
2738 | case Parameters::TARGET_64_BIG: | |
fd9d194f | 2739 | this->sized_write_globals<64, true>(sympool, dynpool, symtab_xindex, |
d491d34e | 2740 | dynsym_xindex, of); |
8851ecca ILT |
2741 | break; |
2742 | #endif | |
2743 | default: | |
2744 | gold_unreachable(); | |
61ba1cf9 | 2745 | } |
61ba1cf9 ILT |
2746 | } |
2747 | ||
2748 | // Write out the global symbols. | |
2749 | ||
2750 | template<int size, bool big_endian> | |
2751 | void | |
fd9d194f | 2752 | Symbol_table::sized_write_globals(const Stringpool* sympool, |
16649710 | 2753 | const Stringpool* dynpool, |
d491d34e ILT |
2754 | Output_symtab_xindex* symtab_xindex, |
2755 | Output_symtab_xindex* dynsym_xindex, | |
61ba1cf9 ILT |
2756 | Output_file* of) const |
2757 | { | |
8851ecca | 2758 | const Target& target = parameters->target(); |
9a2d6984 | 2759 | |
61ba1cf9 | 2760 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
55a93433 ILT |
2761 | |
2762 | const unsigned int output_count = this->output_count_; | |
2763 | const section_size_type oview_size = output_count * sym_size; | |
2764 | const unsigned int first_global_index = this->first_global_index_; | |
5fe2a0f5 ILT |
2765 | unsigned char* psyms; |
2766 | if (this->offset_ == 0 || output_count == 0) | |
2767 | psyms = NULL; | |
2768 | else | |
2769 | psyms = of->get_output_view(this->offset_, oview_size); | |
16649710 | 2770 | |
55a93433 ILT |
2771 | const unsigned int dynamic_count = this->dynamic_count_; |
2772 | const section_size_type dynamic_size = dynamic_count * sym_size; | |
2773 | const unsigned int first_dynamic_global_index = | |
2774 | this->first_dynamic_global_index_; | |
16649710 | 2775 | unsigned char* dynamic_view; |
5fe2a0f5 | 2776 | if (this->dynamic_offset_ == 0 || dynamic_count == 0) |
16649710 ILT |
2777 | dynamic_view = NULL; |
2778 | else | |
2779 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 2780 | |
61ba1cf9 ILT |
2781 | for (Symbol_table_type::const_iterator p = this->table_.begin(); |
2782 | p != this->table_.end(); | |
2783 | ++p) | |
2784 | { | |
2785 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
2786 | ||
9a2d6984 | 2787 | // Possibly warn about unresolved symbols in shared libraries. |
fd9d194f | 2788 | this->warn_about_undefined_dynobj_symbol(sym); |
e2827e5f | 2789 | |
a3ad94ed | 2790 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
2791 | unsigned int dynsym_index; |
2792 | if (dynamic_view == NULL) | |
2793 | dynsym_index = -1U; | |
2794 | else | |
2795 | dynsym_index = sym->dynsym_index(); | |
2796 | ||
2797 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
2798 | { |
2799 | // This symbol is not included in the output file. | |
2800 | continue; | |
2801 | } | |
16649710 | 2802 | |
2ea97941 | 2803 | unsigned int shndx; |
88dd47ac ILT |
2804 | typename elfcpp::Elf_types<size>::Elf_Addr sym_value = sym->value(); |
2805 | typename elfcpp::Elf_types<size>::Elf_Addr dynsym_value = sym_value; | |
ce279a62 | 2806 | elfcpp::STB binding = sym->binding(); |
ead1e424 ILT |
2807 | switch (sym->source()) |
2808 | { | |
2809 | case Symbol::FROM_OBJECT: | |
2810 | { | |
d491d34e ILT |
2811 | bool is_ordinary; |
2812 | unsigned int in_shndx = sym->shndx(&is_ordinary); | |
ead1e424 | 2813 | |
d491d34e | 2814 | if (!is_ordinary |
0dfbdef4 | 2815 | && in_shndx != elfcpp::SHN_ABS |
8a5e3e08 | 2816 | && !Symbol::is_common_shndx(in_shndx)) |
ead1e424 | 2817 | { |
75f2446e | 2818 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 2819 | sym->demangled_name().c_str(), in_shndx); |
2ea97941 | 2820 | shndx = in_shndx; |
f6ce93d6 | 2821 | } |
ead1e424 ILT |
2822 | else |
2823 | { | |
75f2446e ILT |
2824 | Object* symobj = sym->object(); |
2825 | if (symobj->is_dynamic()) | |
2826 | { | |
2827 | if (sym->needs_dynsym_value()) | |
8851ecca | 2828 | dynsym_value = target.dynsym_value(sym); |
2ea97941 | 2829 | shndx = elfcpp::SHN_UNDEF; |
ce279a62 CC |
2830 | if (sym->is_undef_binding_weak()) |
2831 | binding = elfcpp::STB_WEAK; | |
74f67560 DK |
2832 | else |
2833 | binding = elfcpp::STB_GLOBAL; | |
75f2446e | 2834 | } |
89fc3421 | 2835 | else if (symobj->pluginobj() != NULL) |
2ea97941 | 2836 | shndx = elfcpp::SHN_UNDEF; |
75f2446e | 2837 | else if (in_shndx == elfcpp::SHN_UNDEF |
d491d34e ILT |
2838 | || (!is_ordinary |
2839 | && (in_shndx == elfcpp::SHN_ABS | |
8a5e3e08 | 2840 | || Symbol::is_common_shndx(in_shndx)))) |
2ea97941 | 2841 | shndx = in_shndx; |
75f2446e ILT |
2842 | else |
2843 | { | |
2844 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
ef9beddf | 2845 | Output_section* os = relobj->output_section(in_shndx); |
ef15dade ST |
2846 | if (this->is_section_folded(relobj, in_shndx)) |
2847 | { | |
2848 | // This global symbol must be written out even though | |
2849 | // it is folded. | |
2850 | // Get the os of the section it is folded onto. | |
2851 | Section_id folded = | |
2852 | this->icf_->get_folded_section(relobj, in_shndx); | |
2853 | gold_assert(folded.first !=NULL); | |
2854 | Relobj* folded_obj = | |
2855 | reinterpret_cast<Relobj*>(folded.first); | |
2856 | os = folded_obj->output_section(folded.second); | |
2857 | gold_assert(os != NULL); | |
2858 | } | |
75f2446e | 2859 | gold_assert(os != NULL); |
2ea97941 | 2860 | shndx = os->out_shndx(); |
88dd47ac | 2861 | |
2ea97941 | 2862 | if (shndx >= elfcpp::SHN_LORESERVE) |
d491d34e ILT |
2863 | { |
2864 | if (sym_index != -1U) | |
2ea97941 | 2865 | symtab_xindex->add(sym_index, shndx); |
d491d34e | 2866 | if (dynsym_index != -1U) |
2ea97941 ILT |
2867 | dynsym_xindex->add(dynsym_index, shndx); |
2868 | shndx = elfcpp::SHN_XINDEX; | |
d491d34e ILT |
2869 | } |
2870 | ||
88dd47ac ILT |
2871 | // In object files symbol values are section |
2872 | // relative. | |
8851ecca | 2873 | if (parameters->options().relocatable()) |
88dd47ac | 2874 | sym_value -= os->address(); |
75f2446e | 2875 | } |
ead1e424 ILT |
2876 | } |
2877 | } | |
2878 | break; | |
2879 | ||
2880 | case Symbol::IN_OUTPUT_DATA: | |
2ea97941 ILT |
2881 | shndx = sym->output_data()->out_shndx(); |
2882 | if (shndx >= elfcpp::SHN_LORESERVE) | |
d491d34e ILT |
2883 | { |
2884 | if (sym_index != -1U) | |
2ea97941 | 2885 | symtab_xindex->add(sym_index, shndx); |
d491d34e | 2886 | if (dynsym_index != -1U) |
2ea97941 ILT |
2887 | dynsym_xindex->add(dynsym_index, shndx); |
2888 | shndx = elfcpp::SHN_XINDEX; | |
d491d34e | 2889 | } |
ead1e424 ILT |
2890 | break; |
2891 | ||
2892 | case Symbol::IN_OUTPUT_SEGMENT: | |
2ea97941 | 2893 | shndx = elfcpp::SHN_ABS; |
ead1e424 ILT |
2894 | break; |
2895 | ||
f3e9c5c5 | 2896 | case Symbol::IS_CONSTANT: |
2ea97941 | 2897 | shndx = elfcpp::SHN_ABS; |
ead1e424 ILT |
2898 | break; |
2899 | ||
f3e9c5c5 | 2900 | case Symbol::IS_UNDEFINED: |
2ea97941 | 2901 | shndx = elfcpp::SHN_UNDEF; |
f3e9c5c5 ILT |
2902 | break; |
2903 | ||
ead1e424 | 2904 | default: |
a3ad94ed | 2905 | gold_unreachable(); |
ead1e424 | 2906 | } |
61ba1cf9 | 2907 | |
16649710 ILT |
2908 | if (sym_index != -1U) |
2909 | { | |
55a93433 ILT |
2910 | sym_index -= first_global_index; |
2911 | gold_assert(sym_index < output_count); | |
2912 | unsigned char* ps = psyms + (sym_index * sym_size); | |
2ea97941 | 2913 | this->sized_write_symbol<size, big_endian>(sym, sym_value, shndx, |
ce279a62 | 2914 | binding, sympool, ps); |
16649710 | 2915 | } |
61ba1cf9 | 2916 | |
16649710 ILT |
2917 | if (dynsym_index != -1U) |
2918 | { | |
2919 | dynsym_index -= first_dynamic_global_index; | |
2920 | gold_assert(dynsym_index < dynamic_count); | |
2921 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
2ea97941 | 2922 | this->sized_write_symbol<size, big_endian>(sym, dynsym_value, shndx, |
ce279a62 | 2923 | binding, dynpool, pd); |
16649710 | 2924 | } |
61ba1cf9 ILT |
2925 | } |
2926 | ||
c06b7b0b | 2927 | of->write_output_view(this->offset_, oview_size, psyms); |
16649710 ILT |
2928 | if (dynamic_view != NULL) |
2929 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
2930 | } | |
2931 | ||
2932 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
2933 | // strtab holding the name. | |
2934 | ||
2935 | template<int size, bool big_endian> | |
2936 | void | |
ab5c9e90 ILT |
2937 | Symbol_table::sized_write_symbol( |
2938 | Sized_symbol<size>* sym, | |
2ea97941 ILT |
2939 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
2940 | unsigned int shndx, | |
ce279a62 | 2941 | elfcpp::STB binding, |
ab5c9e90 | 2942 | const Stringpool* pool, |
7d1a9ebb | 2943 | unsigned char* p) const |
16649710 ILT |
2944 | { |
2945 | elfcpp::Sym_write<size, big_endian> osym(p); | |
6d1c4efb ILT |
2946 | if (sym->version() == NULL || !parameters->options().relocatable()) |
2947 | osym.put_st_name(pool->get_offset(sym->name())); | |
2948 | else | |
2949 | osym.put_st_name(pool->get_offset(sym->versioned_name())); | |
2ea97941 | 2950 | osym.put_st_value(value); |
58e54ac2 | 2951 | // Use a symbol size of zero for undefined symbols from shared libraries. |
2ea97941 | 2952 | if (shndx == elfcpp::SHN_UNDEF && sym->is_from_dynobj()) |
58e54ac2 CD |
2953 | osym.put_st_size(0); |
2954 | else | |
2955 | osym.put_st_size(sym->symsize()); | |
53d7974c L |
2956 | elfcpp::STT type = sym->type(); |
2957 | // Turn IFUNC symbols from shared libraries into normal FUNC symbols. | |
2958 | if (type == elfcpp::STT_GNU_IFUNC | |
2959 | && sym->is_from_dynobj()) | |
2960 | type = elfcpp::STT_FUNC; | |
55a93433 ILT |
2961 | // A version script may have overridden the default binding. |
2962 | if (sym->is_forced_local()) | |
53d7974c | 2963 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, type)); |
55a93433 | 2964 | else |
ce279a62 | 2965 | osym.put_st_info(elfcpp::elf_st_info(binding, type)); |
16649710 | 2966 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); |
2ea97941 | 2967 | osym.put_st_shndx(shndx); |
61ba1cf9 ILT |
2968 | } |
2969 | ||
9a2d6984 ILT |
2970 | // Check for unresolved symbols in shared libraries. This is |
2971 | // controlled by the --allow-shlib-undefined option. | |
2972 | ||
2973 | // We only warn about libraries for which we have seen all the | |
2974 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
2975 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
2976 | // entry, we aren't going to be able to reliably report whether the | |
2977 | // symbol is undefined. | |
2978 | ||
fd9d194f ILT |
2979 | // We also don't warn about libraries found in a system library |
2980 | // directory (e.g., /lib or /usr/lib); we assume that those libraries | |
2981 | // are OK. This heuristic avoids problems on GNU/Linux, in which -ldl | |
2982 | // can have undefined references satisfied by ld-linux.so. | |
9a2d6984 ILT |
2983 | |
2984 | inline void | |
fd9d194f | 2985 | Symbol_table::warn_about_undefined_dynobj_symbol(Symbol* sym) const |
9a2d6984 | 2986 | { |
d491d34e | 2987 | bool dummy; |
9a2d6984 ILT |
2988 | if (sym->source() == Symbol::FROM_OBJECT |
2989 | && sym->object()->is_dynamic() | |
d491d34e | 2990 | && sym->shndx(&dummy) == elfcpp::SHN_UNDEF |
9a2d6984 | 2991 | && sym->binding() != elfcpp::STB_WEAK |
8851ecca ILT |
2992 | && !parameters->options().allow_shlib_undefined() |
2993 | && !parameters->target().is_defined_by_abi(sym) | |
fd9d194f | 2994 | && !sym->object()->is_in_system_directory()) |
9a2d6984 ILT |
2995 | { |
2996 | // A very ugly cast. | |
2997 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
2998 | if (!dynobj->has_unknown_needed_entries()) | |
f073bbf7 | 2999 | gold_undefined_symbol(sym); |
9a2d6984 ILT |
3000 | } |
3001 | } | |
3002 | ||
a3ad94ed ILT |
3003 | // Write out a section symbol. Return the update offset. |
3004 | ||
3005 | void | |
ca09d69a | 3006 | Symbol_table::write_section_symbol(const Output_section* os, |
d491d34e | 3007 | Output_symtab_xindex* symtab_xindex, |
a3ad94ed ILT |
3008 | Output_file* of, |
3009 | off_t offset) const | |
3010 | { | |
8851ecca | 3011 | switch (parameters->size_and_endianness()) |
a3ad94ed | 3012 | { |
9025d29d | 3013 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca | 3014 | case Parameters::TARGET_32_LITTLE: |
d491d34e ILT |
3015 | this->sized_write_section_symbol<32, false>(os, symtab_xindex, of, |
3016 | offset); | |
8851ecca | 3017 | break; |
9025d29d | 3018 | #endif |
8851ecca ILT |
3019 | #ifdef HAVE_TARGET_32_BIG |
3020 | case Parameters::TARGET_32_BIG: | |
d491d34e ILT |
3021 | this->sized_write_section_symbol<32, true>(os, symtab_xindex, of, |
3022 | offset); | |
8851ecca | 3023 | break; |
9025d29d | 3024 | #endif |
9025d29d | 3025 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca | 3026 | case Parameters::TARGET_64_LITTLE: |
d491d34e ILT |
3027 | this->sized_write_section_symbol<64, false>(os, symtab_xindex, of, |
3028 | offset); | |
8851ecca | 3029 | break; |
9025d29d | 3030 | #endif |
8851ecca ILT |
3031 | #ifdef HAVE_TARGET_64_BIG |
3032 | case Parameters::TARGET_64_BIG: | |
d491d34e ILT |
3033 | this->sized_write_section_symbol<64, true>(os, symtab_xindex, of, |
3034 | offset); | |
8851ecca ILT |
3035 | break; |
3036 | #endif | |
3037 | default: | |
3038 | gold_unreachable(); | |
a3ad94ed | 3039 | } |
a3ad94ed ILT |
3040 | } |
3041 | ||
3042 | // Write out a section symbol, specialized for size and endianness. | |
3043 | ||
3044 | template<int size, bool big_endian> | |
3045 | void | |
3046 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
d491d34e | 3047 | Output_symtab_xindex* symtab_xindex, |
a3ad94ed ILT |
3048 | Output_file* of, |
3049 | off_t offset) const | |
3050 | { | |
3051 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
3052 | ||
3053 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
3054 | ||
3055 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
3056 | osym.put_st_name(0); | |
b4ecf66b ILT |
3057 | if (parameters->options().relocatable()) |
3058 | osym.put_st_value(0); | |
3059 | else | |
3060 | osym.put_st_value(os->address()); | |
a3ad94ed ILT |
3061 | osym.put_st_size(0); |
3062 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
3063 | elfcpp::STT_SECTION)); | |
3064 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
d491d34e | 3065 | |
2ea97941 ILT |
3066 | unsigned int shndx = os->out_shndx(); |
3067 | if (shndx >= elfcpp::SHN_LORESERVE) | |
d491d34e | 3068 | { |
2ea97941 ILT |
3069 | symtab_xindex->add(os->symtab_index(), shndx); |
3070 | shndx = elfcpp::SHN_XINDEX; | |
d491d34e | 3071 | } |
2ea97941 | 3072 | osym.put_st_shndx(shndx); |
a3ad94ed ILT |
3073 | |
3074 | of->write_output_view(offset, sym_size, pov); | |
3075 | } | |
3076 | ||
abaa3995 ILT |
3077 | // Print statistical information to stderr. This is used for --stats. |
3078 | ||
3079 | void | |
3080 | Symbol_table::print_stats() const | |
3081 | { | |
3082 | #if defined(HAVE_TR1_UNORDERED_MAP) || defined(HAVE_EXT_HASH_MAP) | |
3083 | fprintf(stderr, _("%s: symbol table entries: %zu; buckets: %zu\n"), | |
3084 | program_name, this->table_.size(), this->table_.bucket_count()); | |
3085 | #else | |
3086 | fprintf(stderr, _("%s: symbol table entries: %zu\n"), | |
3087 | program_name, this->table_.size()); | |
3088 | #endif | |
ad8f37d1 | 3089 | this->namepool_.print_stats("symbol table stringpool"); |
abaa3995 ILT |
3090 | } |
3091 | ||
ff541f30 ILT |
3092 | // We check for ODR violations by looking for symbols with the same |
3093 | // name for which the debugging information reports that they were | |
71ff8986 | 3094 | // defined in disjoint source locations. When comparing the source |
55382fb7 ILT |
3095 | // location, we consider instances with the same base filename to be |
3096 | // the same. This is because different object files/shared libraries | |
3097 | // can include the same header file using different paths, and | |
3098 | // different optimization settings can make the line number appear to | |
3099 | // be a couple lines off, and we don't want to report an ODR violation | |
3100 | // in those cases. | |
ff541f30 ILT |
3101 | |
3102 | // This struct is used to compare line information, as returned by | |
7bf1f802 | 3103 | // Dwarf_line_info::one_addr2line. It implements a < comparison |
71ff8986 | 3104 | // operator used with std::sort. |
ff541f30 ILT |
3105 | |
3106 | struct Odr_violation_compare | |
3107 | { | |
3108 | bool | |
3109 | operator()(const std::string& s1, const std::string& s2) const | |
3110 | { | |
55382fb7 | 3111 | // Inputs should be of the form "dirname/filename:linenum" where |
71ff8986 | 3112 | // "dirname/" is optional. We want to compare just the filename:linenum. |
55382fb7 | 3113 | |
71ff8986 | 3114 | // Find the last '/' in each string. |
55382fb7 ILT |
3115 | std::string::size_type s1begin = s1.rfind('/'); |
3116 | std::string::size_type s2begin = s2.rfind('/'); | |
55382fb7 ILT |
3117 | // If there was no '/' in a string, start at the beginning. |
3118 | if (s1begin == std::string::npos) | |
3119 | s1begin = 0; | |
3120 | if (s2begin == std::string::npos) | |
3121 | s2begin = 0; | |
71ff8986 ILT |
3122 | return s1.compare(s1begin, std::string::npos, |
3123 | s2, s2begin, std::string::npos) < 0; | |
ff541f30 ILT |
3124 | } |
3125 | }; | |
3126 | ||
71ff8986 ILT |
3127 | // Returns all of the lines attached to LOC, not just the one the |
3128 | // instruction actually came from. | |
3129 | std::vector<std::string> | |
3130 | Symbol_table::linenos_from_loc(const Task* task, | |
3131 | const Symbol_location& loc) | |
3132 | { | |
3133 | // We need to lock the object in order to read it. This | |
3134 | // means that we have to run in a singleton Task. If we | |
3135 | // want to run this in a general Task for better | |
3136 | // performance, we will need one Task for object, plus | |
3137 | // appropriate locking to ensure that we don't conflict with | |
3138 | // other uses of the object. Also note, one_addr2line is not | |
3139 | // currently thread-safe. | |
3140 | Task_lock_obj<Object> tl(task, loc.object); | |
3141 | ||
3142 | std::vector<std::string> result; | |
3143 | // 16 is the size of the object-cache that one_addr2line should use. | |
3144 | std::string canonical_result = Dwarf_line_info::one_addr2line( | |
3145 | loc.object, loc.shndx, loc.offset, 16, &result); | |
3146 | if (!canonical_result.empty()) | |
3147 | result.push_back(canonical_result); | |
3148 | return result; | |
3149 | } | |
3150 | ||
3151 | // OutputIterator that records if it was ever assigned to. This | |
3152 | // allows it to be used with std::set_intersection() to check for | |
3153 | // intersection rather than computing the intersection. | |
3154 | struct Check_intersection | |
3155 | { | |
3156 | Check_intersection() | |
3157 | : value_(false) | |
3158 | {} | |
3159 | ||
3160 | bool had_intersection() const | |
3161 | { return this->value_; } | |
3162 | ||
3163 | Check_intersection& operator++() | |
3164 | { return *this; } | |
3165 | ||
3166 | Check_intersection& operator*() | |
3167 | { return *this; } | |
3168 | ||
3169 | template<typename T> | |
3170 | Check_intersection& operator=(const T&) | |
3171 | { | |
3172 | this->value_ = true; | |
3173 | return *this; | |
3174 | } | |
3175 | ||
3176 | private: | |
3177 | bool value_; | |
3178 | }; | |
3179 | ||
70e654ba | 3180 | // Check candidate_odr_violations_ to find symbols with the same name |
71ff8986 ILT |
3181 | // but apparently different definitions (different source-file/line-no |
3182 | // for each line assigned to the first instruction). | |
70e654ba ILT |
3183 | |
3184 | void | |
17a1d0a9 ILT |
3185 | Symbol_table::detect_odr_violations(const Task* task, |
3186 | const char* output_file_name) const | |
70e654ba ILT |
3187 | { |
3188 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
3189 | it != candidate_odr_violations_.end(); | |
3190 | ++it) | |
3191 | { | |
71ff8986 ILT |
3192 | const char* const symbol_name = it->first; |
3193 | ||
3194 | std::string first_object_name; | |
3195 | std::vector<std::string> first_object_linenos; | |
3196 | ||
3197 | Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator | |
3198 | locs = it->second.begin(); | |
3199 | const Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator | |
3200 | locs_end = it->second.end(); | |
3201 | for (; locs != locs_end && first_object_linenos.empty(); ++locs) | |
70e654ba | 3202 | { |
71ff8986 ILT |
3203 | // Save the line numbers from the first definition to |
3204 | // compare to the other definitions. Ideally, we'd compare | |
3205 | // every definition to every other, but we don't want to | |
3206 | // take O(N^2) time to do this. This shortcut may cause | |
3207 | // false negatives that appear or disappear depending on the | |
3208 | // link order, but it won't cause false positives. | |
3209 | first_object_name = locs->object->name(); | |
3210 | first_object_linenos = this->linenos_from_loc(task, *locs); | |
70e654ba ILT |
3211 | } |
3212 | ||
71ff8986 ILT |
3213 | // Sort by Odr_violation_compare to make std::set_intersection work. |
3214 | std::sort(first_object_linenos.begin(), first_object_linenos.end(), | |
3215 | Odr_violation_compare()); | |
3216 | ||
3217 | for (; locs != locs_end; ++locs) | |
70e654ba | 3218 | { |
71ff8986 ILT |
3219 | std::vector<std::string> linenos = |
3220 | this->linenos_from_loc(task, *locs); | |
3221 | // linenos will be empty if we couldn't parse the debug info. | |
3222 | if (linenos.empty()) | |
3223 | continue; | |
3224 | // Sort by Odr_violation_compare to make std::set_intersection work. | |
3225 | std::sort(linenos.begin(), linenos.end(), Odr_violation_compare()); | |
3226 | ||
3227 | Check_intersection intersection_result = | |
3228 | std::set_intersection(first_object_linenos.begin(), | |
3229 | first_object_linenos.end(), | |
3230 | linenos.begin(), | |
3231 | linenos.end(), | |
3232 | Check_intersection(), | |
3233 | Odr_violation_compare()); | |
3234 | if (!intersection_result.had_intersection()) | |
3235 | { | |
3236 | gold_warning(_("while linking %s: symbol '%s' defined in " | |
3237 | "multiple places (possible ODR violation):"), | |
3238 | output_file_name, demangle(symbol_name).c_str()); | |
3239 | // This only prints one location from each definition, | |
3240 | // which may not be the location we expect to intersect | |
3241 | // with another definition. We could print the whole | |
3242 | // set of locations, but that seems too verbose. | |
3243 | gold_assert(!first_object_linenos.empty()); | |
3244 | gold_assert(!linenos.empty()); | |
3245 | fprintf(stderr, _(" %s from %s\n"), | |
3246 | first_object_linenos[0].c_str(), | |
3247 | first_object_name.c_str()); | |
3248 | fprintf(stderr, _(" %s from %s\n"), | |
3249 | linenos[0].c_str(), | |
3250 | locs->object->name().c_str()); | |
3251 | // Only print one broken pair, to avoid needing to | |
3252 | // compare against a list of the disjoint definition | |
3253 | // locations we've found so far. (If we kept comparing | |
3254 | // against just the first one, we'd get a lot of | |
3255 | // redundant complaints about the second definition | |
3256 | // location.) | |
3257 | break; | |
3258 | } | |
70e654ba ILT |
3259 | } |
3260 | } | |
e4e5049b CS |
3261 | // We only call one_addr2line() in this function, so we can clear its cache. |
3262 | Dwarf_line_info::clear_addr2line_cache(); | |
70e654ba ILT |
3263 | } |
3264 | ||
f6ce93d6 ILT |
3265 | // Warnings functions. |
3266 | ||
3267 | // Add a new warning. | |
3268 | ||
3269 | void | |
2ea97941 | 3270 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, |
cb295612 | 3271 | const std::string& warning) |
f6ce93d6 | 3272 | { |
2ea97941 ILT |
3273 | name = symtab->canonicalize_name(name); |
3274 | this->warnings_[name].set(obj, warning); | |
f6ce93d6 ILT |
3275 | } |
3276 | ||
3277 | // Look through the warnings and mark the symbols for which we should | |
3278 | // warn. This is called during Layout::finalize when we know the | |
3279 | // sources for all the symbols. | |
3280 | ||
3281 | void | |
cb295612 | 3282 | Warnings::note_warnings(Symbol_table* symtab) |
f6ce93d6 ILT |
3283 | { |
3284 | for (Warning_table::iterator p = this->warnings_.begin(); | |
3285 | p != this->warnings_.end(); | |
3286 | ++p) | |
3287 | { | |
3288 | Symbol* sym = symtab->lookup(p->first, NULL); | |
3289 | if (sym != NULL | |
3290 | && sym->source() == Symbol::FROM_OBJECT | |
3291 | && sym->object() == p->second.object) | |
cb295612 | 3292 | sym->set_has_warning(); |
f6ce93d6 ILT |
3293 | } |
3294 | } | |
3295 | ||
3296 | // Issue a warning. This is called when we see a relocation against a | |
3297 | // symbol for which has a warning. | |
3298 | ||
75f2446e | 3299 | template<int size, bool big_endian> |
f6ce93d6 | 3300 | void |
75f2446e ILT |
3301 | Warnings::issue_warning(const Symbol* sym, |
3302 | const Relocate_info<size, big_endian>* relinfo, | |
3303 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 3304 | { |
a3ad94ed | 3305 | gold_assert(sym->has_warning()); |
9d3b0698 ILT |
3306 | |
3307 | // We don't want to issue a warning for a relocation against the | |
3308 | // symbol in the same object file in which the symbol is defined. | |
3309 | if (sym->object() == relinfo->object) | |
3310 | return; | |
3311 | ||
f6ce93d6 | 3312 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 3313 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
3314 | gold_warning_at_location(relinfo, relnum, reloffset, |
3315 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
3316 | } |
3317 | ||
14bfc3f5 ILT |
3318 | // Instantiate the templates we need. We could use the configure |
3319 | // script to restrict this to only the ones needed for implemented | |
3320 | // targets. | |
3321 | ||
c7912668 ILT |
3322 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
3323 | template | |
3324 | void | |
3325 | Sized_symbol<32>::allocate_common(Output_data*, Value_type); | |
3326 | #endif | |
3327 | ||
3328 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
3329 | template | |
3330 | void | |
3331 | Sized_symbol<64>::allocate_common(Output_data*, Value_type); | |
3332 | #endif | |
3333 | ||
193a53d9 | 3334 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
3335 | template |
3336 | void | |
193a53d9 | 3337 | Symbol_table::add_from_relobj<32, false>( |
6fa2a40b | 3338 | Sized_relobj_file<32, false>* relobj, |
f6ce93d6 | 3339 | const unsigned char* syms, |
14bfc3f5 | 3340 | size_t count, |
d491d34e | 3341 | size_t symndx_offset, |
14bfc3f5 ILT |
3342 | const char* sym_names, |
3343 | size_t sym_name_size, | |
6fa2a40b | 3344 | Sized_relobj_file<32, false>::Symbols* sympointers, |
92de84a6 | 3345 | size_t* defined); |
193a53d9 | 3346 | #endif |
14bfc3f5 | 3347 | |
193a53d9 | 3348 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
3349 | template |
3350 | void | |
193a53d9 | 3351 | Symbol_table::add_from_relobj<32, true>( |
6fa2a40b | 3352 | Sized_relobj_file<32, true>* relobj, |
f6ce93d6 | 3353 | const unsigned char* syms, |
14bfc3f5 | 3354 | size_t count, |
d491d34e | 3355 | size_t symndx_offset, |
14bfc3f5 ILT |
3356 | const char* sym_names, |
3357 | size_t sym_name_size, | |
6fa2a40b | 3358 | Sized_relobj_file<32, true>::Symbols* sympointers, |
92de84a6 | 3359 | size_t* defined); |
193a53d9 | 3360 | #endif |
14bfc3f5 | 3361 | |
193a53d9 | 3362 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
3363 | template |
3364 | void | |
193a53d9 | 3365 | Symbol_table::add_from_relobj<64, false>( |
6fa2a40b | 3366 | Sized_relobj_file<64, false>* relobj, |
f6ce93d6 | 3367 | const unsigned char* syms, |
14bfc3f5 | 3368 | size_t count, |
d491d34e | 3369 | size_t symndx_offset, |
14bfc3f5 ILT |
3370 | const char* sym_names, |
3371 | size_t sym_name_size, | |
6fa2a40b | 3372 | Sized_relobj_file<64, false>::Symbols* sympointers, |
92de84a6 | 3373 | size_t* defined); |
193a53d9 | 3374 | #endif |
14bfc3f5 | 3375 | |
193a53d9 | 3376 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
3377 | template |
3378 | void | |
193a53d9 | 3379 | Symbol_table::add_from_relobj<64, true>( |
6fa2a40b | 3380 | Sized_relobj_file<64, true>* relobj, |
f6ce93d6 | 3381 | const unsigned char* syms, |
14bfc3f5 | 3382 | size_t count, |
d491d34e | 3383 | size_t symndx_offset, |
14bfc3f5 ILT |
3384 | const char* sym_names, |
3385 | size_t sym_name_size, | |
6fa2a40b | 3386 | Sized_relobj_file<64, true>::Symbols* sympointers, |
92de84a6 | 3387 | size_t* defined); |
193a53d9 | 3388 | #endif |
14bfc3f5 | 3389 | |
89fc3421 CC |
3390 | #ifdef HAVE_TARGET_32_LITTLE |
3391 | template | |
3392 | Symbol* | |
3393 | Symbol_table::add_from_pluginobj<32, false>( | |
3394 | Sized_pluginobj<32, false>* obj, | |
3395 | const char* name, | |
3396 | const char* ver, | |
3397 | elfcpp::Sym<32, false>* sym); | |
3398 | #endif | |
3399 | ||
3400 | #ifdef HAVE_TARGET_32_BIG | |
3401 | template | |
3402 | Symbol* | |
3403 | Symbol_table::add_from_pluginobj<32, true>( | |
3404 | Sized_pluginobj<32, true>* obj, | |
3405 | const char* name, | |
3406 | const char* ver, | |
3407 | elfcpp::Sym<32, true>* sym); | |
3408 | #endif | |
3409 | ||
3410 | #ifdef HAVE_TARGET_64_LITTLE | |
3411 | template | |
3412 | Symbol* | |
3413 | Symbol_table::add_from_pluginobj<64, false>( | |
3414 | Sized_pluginobj<64, false>* obj, | |
3415 | const char* name, | |
3416 | const char* ver, | |
3417 | elfcpp::Sym<64, false>* sym); | |
3418 | #endif | |
3419 | ||
3420 | #ifdef HAVE_TARGET_64_BIG | |
3421 | template | |
3422 | Symbol* | |
3423 | Symbol_table::add_from_pluginobj<64, true>( | |
3424 | Sized_pluginobj<64, true>* obj, | |
3425 | const char* name, | |
3426 | const char* ver, | |
3427 | elfcpp::Sym<64, true>* sym); | |
3428 | #endif | |
3429 | ||
193a53d9 | 3430 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
3431 | template |
3432 | void | |
193a53d9 ILT |
3433 | Symbol_table::add_from_dynobj<32, false>( |
3434 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
3435 | const unsigned char* syms, |
3436 | size_t count, | |
3437 | const char* sym_names, | |
3438 | size_t sym_name_size, | |
3439 | const unsigned char* versym, | |
3440 | size_t versym_size, | |
92de84a6 | 3441 | const std::vector<const char*>* version_map, |
6fa2a40b | 3442 | Sized_relobj_file<32, false>::Symbols* sympointers, |
92de84a6 | 3443 | size_t* defined); |
193a53d9 | 3444 | #endif |
dbe717ef | 3445 | |
193a53d9 | 3446 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
3447 | template |
3448 | void | |
193a53d9 ILT |
3449 | Symbol_table::add_from_dynobj<32, true>( |
3450 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
3451 | const unsigned char* syms, |
3452 | size_t count, | |
3453 | const char* sym_names, | |
3454 | size_t sym_name_size, | |
3455 | const unsigned char* versym, | |
3456 | size_t versym_size, | |
92de84a6 | 3457 | const std::vector<const char*>* version_map, |
6fa2a40b | 3458 | Sized_relobj_file<32, true>::Symbols* sympointers, |
92de84a6 | 3459 | size_t* defined); |
193a53d9 | 3460 | #endif |
dbe717ef | 3461 | |
193a53d9 | 3462 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
3463 | template |
3464 | void | |
193a53d9 ILT |
3465 | Symbol_table::add_from_dynobj<64, false>( |
3466 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
3467 | const unsigned char* syms, |
3468 | size_t count, | |
3469 | const char* sym_names, | |
3470 | size_t sym_name_size, | |
3471 | const unsigned char* versym, | |
3472 | size_t versym_size, | |
92de84a6 | 3473 | const std::vector<const char*>* version_map, |
6fa2a40b | 3474 | Sized_relobj_file<64, false>::Symbols* sympointers, |
92de84a6 | 3475 | size_t* defined); |
193a53d9 | 3476 | #endif |
dbe717ef | 3477 | |
193a53d9 | 3478 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
3479 | template |
3480 | void | |
193a53d9 ILT |
3481 | Symbol_table::add_from_dynobj<64, true>( |
3482 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
3483 | const unsigned char* syms, |
3484 | size_t count, | |
3485 | const char* sym_names, | |
3486 | size_t sym_name_size, | |
3487 | const unsigned char* versym, | |
3488 | size_t versym_size, | |
92de84a6 | 3489 | const std::vector<const char*>* version_map, |
6fa2a40b | 3490 | Sized_relobj_file<64, true>::Symbols* sympointers, |
92de84a6 | 3491 | size_t* defined); |
193a53d9 | 3492 | #endif |
dbe717ef | 3493 | |
cdc29364 CC |
3494 | #ifdef HAVE_TARGET_32_LITTLE |
3495 | template | |
26d3c67d | 3496 | Sized_symbol<32>* |
cdc29364 CC |
3497 | Symbol_table::add_from_incrobj( |
3498 | Object* obj, | |
3499 | const char* name, | |
3500 | const char* ver, | |
3501 | elfcpp::Sym<32, false>* sym); | |
3502 | #endif | |
3503 | ||
3504 | #ifdef HAVE_TARGET_32_BIG | |
3505 | template | |
26d3c67d | 3506 | Sized_symbol<32>* |
cdc29364 CC |
3507 | Symbol_table::add_from_incrobj( |
3508 | Object* obj, | |
3509 | const char* name, | |
3510 | const char* ver, | |
3511 | elfcpp::Sym<32, true>* sym); | |
3512 | #endif | |
3513 | ||
3514 | #ifdef HAVE_TARGET_64_LITTLE | |
3515 | template | |
26d3c67d | 3516 | Sized_symbol<64>* |
cdc29364 CC |
3517 | Symbol_table::add_from_incrobj( |
3518 | Object* obj, | |
3519 | const char* name, | |
3520 | const char* ver, | |
3521 | elfcpp::Sym<64, false>* sym); | |
3522 | #endif | |
3523 | ||
3524 | #ifdef HAVE_TARGET_64_BIG | |
3525 | template | |
26d3c67d | 3526 | Sized_symbol<64>* |
cdc29364 CC |
3527 | Symbol_table::add_from_incrobj( |
3528 | Object* obj, | |
3529 | const char* name, | |
3530 | const char* ver, | |
3531 | elfcpp::Sym<64, true>* sym); | |
3532 | #endif | |
3533 | ||
46fe1623 ILT |
3534 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
3535 | template | |
3536 | void | |
fe8718a4 | 3537 | Symbol_table::define_with_copy_reloc<32>( |
fe8718a4 ILT |
3538 | Sized_symbol<32>* sym, |
3539 | Output_data* posd, | |
2ea97941 | 3540 | elfcpp::Elf_types<32>::Elf_Addr value); |
46fe1623 ILT |
3541 | #endif |
3542 | ||
3543 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
3544 | template | |
3545 | void | |
fe8718a4 | 3546 | Symbol_table::define_with_copy_reloc<64>( |
fe8718a4 ILT |
3547 | Sized_symbol<64>* sym, |
3548 | Output_data* posd, | |
2ea97941 | 3549 | elfcpp::Elf_types<64>::Elf_Addr value); |
46fe1623 ILT |
3550 | #endif |
3551 | ||
75f2446e ILT |
3552 | #ifdef HAVE_TARGET_32_LITTLE |
3553 | template | |
3554 | void | |
3555 | Warnings::issue_warning<32, false>(const Symbol* sym, | |
3556 | const Relocate_info<32, false>* relinfo, | |
3557 | size_t relnum, off_t reloffset) const; | |
3558 | #endif | |
3559 | ||
3560 | #ifdef HAVE_TARGET_32_BIG | |
3561 | template | |
3562 | void | |
3563 | Warnings::issue_warning<32, true>(const Symbol* sym, | |
3564 | const Relocate_info<32, true>* relinfo, | |
3565 | size_t relnum, off_t reloffset) const; | |
3566 | #endif | |
3567 | ||
3568 | #ifdef HAVE_TARGET_64_LITTLE | |
3569 | template | |
3570 | void | |
3571 | Warnings::issue_warning<64, false>(const Symbol* sym, | |
3572 | const Relocate_info<64, false>* relinfo, | |
3573 | size_t relnum, off_t reloffset) const; | |
3574 | #endif | |
3575 | ||
3576 | #ifdef HAVE_TARGET_64_BIG | |
3577 | template | |
3578 | void | |
3579 | Warnings::issue_warning<64, true>(const Symbol* sym, | |
3580 | const Relocate_info<64, true>* relinfo, | |
3581 | size_t relnum, off_t reloffset) const; | |
3582 | #endif | |
3583 | ||
14bfc3f5 | 3584 | } // End namespace gold. |