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