]>
Commit | Line | Data |
---|---|---|
14bfc3f5 ILT |
1 | // symtab.cc -- the gold symbol table |
2 | ||
fd67aa11 | 3 | // Copyright (C) 2006-2024 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 | ||
34ca2bd7 AM |
50 | // Initialize fields in Symbol. This initializes everything except |
51 | // u1_, u2_ 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; |
6eeb0170 | 83 | this->is_protected_ = false; |
565ed01a | 84 | this->non_zero_localentry_ = false; |
ead1e424 ILT |
85 | } |
86 | ||
a2b1aa12 ILT |
87 | // Return the demangled version of the symbol's name, but only |
88 | // if the --demangle flag was set. | |
89 | ||
90 | static std::string | |
2ea97941 | 91 | demangle(const char* name) |
a2b1aa12 | 92 | { |
086a1841 | 93 | if (!parameters->options().do_demangle()) |
2ea97941 | 94 | return name; |
ff541f30 | 95 | |
a2b1aa12 ILT |
96 | // cplus_demangle allocates memory for the result it returns, |
97 | // and returns NULL if the name is already demangled. | |
2ea97941 | 98 | char* demangled_name = cplus_demangle(name, DMGL_ANSI | DMGL_PARAMS); |
a2b1aa12 | 99 | if (demangled_name == NULL) |
2ea97941 | 100 | return name; |
a2b1aa12 ILT |
101 | |
102 | std::string retval(demangled_name); | |
103 | free(demangled_name); | |
104 | return retval; | |
105 | } | |
106 | ||
107 | std::string | |
108 | Symbol::demangled_name() const | |
109 | { | |
ff541f30 | 110 | return demangle(this->name()); |
a2b1aa12 ILT |
111 | } |
112 | ||
ead1e424 ILT |
113 | // Initialize the fields in the base class Symbol for SYM in OBJECT. |
114 | ||
115 | template<int size, bool big_endian> | |
116 | void | |
2ea97941 | 117 | Symbol::init_base_object(const char* name, const char* version, Object* object, |
f3e9c5c5 ILT |
118 | const elfcpp::Sym<size, big_endian>& sym, |
119 | unsigned int st_shndx, bool is_ordinary) | |
ead1e424 | 120 | { |
2ea97941 | 121 | this->init_fields(name, version, sym.get_st_type(), sym.get_st_bind(), |
ead1e424 | 122 | sym.get_st_visibility(), sym.get_st_nonvis()); |
34ca2bd7 AM |
123 | this->u1_.object = object; |
124 | this->u2_.shndx = st_shndx; | |
d491d34e | 125 | this->is_ordinary_shndx_ = is_ordinary; |
ead1e424 | 126 | this->source_ = FROM_OBJECT; |
2ea97941 ILT |
127 | this->in_reg_ = !object->is_dynamic(); |
128 | this->in_dyn_ = object->is_dynamic(); | |
129 | this->in_real_elf_ = object->pluginobj() == NULL; | |
14bfc3f5 ILT |
130 | } |
131 | ||
ead1e424 ILT |
132 | // Initialize the fields in the base class Symbol for a symbol defined |
133 | // in an Output_data. | |
134 | ||
135 | void | |
2ea97941 ILT |
136 | Symbol::init_base_output_data(const char* name, const char* version, |
137 | Output_data* od, elfcpp::STT type, | |
138 | elfcpp::STB binding, elfcpp::STV visibility, | |
5146f448 CC |
139 | unsigned char nonvis, bool offset_is_from_end, |
140 | bool is_predefined) | |
ead1e424 | 141 | { |
2ea97941 | 142 | this->init_fields(name, version, type, binding, visibility, nonvis); |
34ca2bd7 AM |
143 | this->u1_.output_data = od; |
144 | this->u2_.offset_is_from_end = offset_is_from_end; | |
ead1e424 | 145 | this->source_ = IN_OUTPUT_DATA; |
008db82e | 146 | this->in_reg_ = true; |
89fc3421 | 147 | this->in_real_elf_ = true; |
5146f448 | 148 | this->is_predefined_ = is_predefined; |
ead1e424 ILT |
149 | } |
150 | ||
151 | // Initialize the fields in the base class Symbol for a symbol defined | |
152 | // in an Output_segment. | |
153 | ||
154 | void | |
2ea97941 ILT |
155 | Symbol::init_base_output_segment(const char* name, const char* version, |
156 | Output_segment* os, elfcpp::STT type, | |
157 | elfcpp::STB binding, elfcpp::STV visibility, | |
158 | unsigned char nonvis, | |
5146f448 CC |
159 | Segment_offset_base offset_base, |
160 | bool is_predefined) | |
ead1e424 | 161 | { |
2ea97941 | 162 | this->init_fields(name, version, type, binding, visibility, nonvis); |
34ca2bd7 AM |
163 | this->u1_.output_segment = os; |
164 | this->u2_.offset_base = offset_base; | |
ead1e424 | 165 | this->source_ = IN_OUTPUT_SEGMENT; |
008db82e | 166 | this->in_reg_ = true; |
89fc3421 | 167 | this->in_real_elf_ = true; |
5146f448 | 168 | this->is_predefined_ = is_predefined; |
ead1e424 ILT |
169 | } |
170 | ||
171 | // Initialize the fields in the base class Symbol for a symbol defined | |
172 | // as a constant. | |
173 | ||
174 | void | |
2ea97941 ILT |
175 | Symbol::init_base_constant(const char* name, const char* version, |
176 | elfcpp::STT type, elfcpp::STB binding, | |
5146f448 CC |
177 | elfcpp::STV visibility, unsigned char nonvis, |
178 | bool is_predefined) | |
f3e9c5c5 | 179 | { |
2ea97941 | 180 | this->init_fields(name, version, type, binding, visibility, nonvis); |
f3e9c5c5 ILT |
181 | this->source_ = IS_CONSTANT; |
182 | this->in_reg_ = true; | |
89fc3421 | 183 | this->in_real_elf_ = true; |
5146f448 | 184 | this->is_predefined_ = is_predefined; |
f3e9c5c5 ILT |
185 | } |
186 | ||
187 | // Initialize the fields in the base class Symbol for an undefined | |
188 | // symbol. | |
189 | ||
190 | void | |
2ea97941 ILT |
191 | Symbol::init_base_undefined(const char* name, const char* version, |
192 | elfcpp::STT type, elfcpp::STB binding, | |
193 | elfcpp::STV visibility, unsigned char nonvis) | |
ead1e424 | 194 | { |
2ea97941 | 195 | this->init_fields(name, version, type, binding, visibility, nonvis); |
d7ab2a47 | 196 | this->dynsym_index_ = -1U; |
f3e9c5c5 | 197 | this->source_ = IS_UNDEFINED; |
008db82e | 198 | this->in_reg_ = true; |
89fc3421 | 199 | this->in_real_elf_ = true; |
ead1e424 ILT |
200 | } |
201 | ||
c7912668 ILT |
202 | // Allocate a common symbol in the base. |
203 | ||
204 | void | |
205 | Symbol::allocate_base_common(Output_data* od) | |
206 | { | |
207 | gold_assert(this->is_common()); | |
208 | this->source_ = IN_OUTPUT_DATA; | |
34ca2bd7 AM |
209 | this->u1_.output_data = od; |
210 | this->u2_.offset_is_from_end = false; | |
c7912668 ILT |
211 | } |
212 | ||
ead1e424 | 213 | // Initialize the fields in Sized_symbol for SYM in OBJECT. |
14bfc3f5 ILT |
214 | |
215 | template<int size> | |
216 | template<bool big_endian> | |
217 | void | |
2ea97941 ILT |
218 | Sized_symbol<size>::init_object(const char* name, const char* version, |
219 | Object* object, | |
f3e9c5c5 ILT |
220 | const elfcpp::Sym<size, big_endian>& sym, |
221 | unsigned int st_shndx, bool is_ordinary) | |
14bfc3f5 | 222 | { |
2ea97941 | 223 | this->init_base_object(name, version, object, sym, st_shndx, is_ordinary); |
14bfc3f5 | 224 | this->value_ = sym.get_st_value(); |
ead1e424 ILT |
225 | this->symsize_ = sym.get_st_size(); |
226 | } | |
227 | ||
228 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
229 | // Output_data. | |
230 | ||
231 | template<int size> | |
232 | void | |
2ea97941 ILT |
233 | Sized_symbol<size>::init_output_data(const char* name, const char* version, |
234 | Output_data* od, Value_type value, | |
235 | Size_type symsize, elfcpp::STT type, | |
236 | elfcpp::STB binding, | |
237 | elfcpp::STV visibility, | |
238 | unsigned char nonvis, | |
5146f448 CC |
239 | bool offset_is_from_end, |
240 | bool is_predefined) | |
ead1e424 | 241 | { |
2ea97941 | 242 | this->init_base_output_data(name, version, od, type, binding, visibility, |
5146f448 | 243 | nonvis, offset_is_from_end, is_predefined); |
2ea97941 ILT |
244 | this->value_ = value; |
245 | this->symsize_ = symsize; | |
ead1e424 ILT |
246 | } |
247 | ||
248 | // Initialize the fields in Sized_symbol for a symbol defined in an | |
249 | // Output_segment. | |
250 | ||
251 | template<int size> | |
252 | void | |
2ea97941 ILT |
253 | Sized_symbol<size>::init_output_segment(const char* name, const char* version, |
254 | Output_segment* os, Value_type value, | |
255 | Size_type symsize, elfcpp::STT type, | |
256 | elfcpp::STB binding, | |
257 | elfcpp::STV visibility, | |
258 | unsigned char nonvis, | |
5146f448 CC |
259 | Segment_offset_base offset_base, |
260 | bool is_predefined) | |
ead1e424 | 261 | { |
2ea97941 | 262 | this->init_base_output_segment(name, version, os, type, binding, visibility, |
5146f448 | 263 | nonvis, offset_base, is_predefined); |
2ea97941 ILT |
264 | this->value_ = value; |
265 | this->symsize_ = symsize; | |
ead1e424 ILT |
266 | } |
267 | ||
268 | // Initialize the fields in Sized_symbol for a symbol defined as a | |
269 | // constant. | |
270 | ||
271 | template<int size> | |
272 | void | |
2ea97941 ILT |
273 | Sized_symbol<size>::init_constant(const char* name, const char* version, |
274 | Value_type value, Size_type symsize, | |
275 | elfcpp::STT type, elfcpp::STB binding, | |
5146f448 CC |
276 | elfcpp::STV visibility, unsigned char nonvis, |
277 | bool is_predefined) | |
ead1e424 | 278 | { |
5146f448 CC |
279 | this->init_base_constant(name, version, type, binding, visibility, nonvis, |
280 | is_predefined); | |
2ea97941 ILT |
281 | this->value_ = value; |
282 | this->symsize_ = symsize; | |
14bfc3f5 ILT |
283 | } |
284 | ||
f3e9c5c5 ILT |
285 | // Initialize the fields in Sized_symbol for an undefined symbol. |
286 | ||
287 | template<int size> | |
288 | void | |
2ea97941 | 289 | Sized_symbol<size>::init_undefined(const char* name, const char* version, |
dc1c8a16 CC |
290 | Value_type value, elfcpp::STT type, |
291 | elfcpp::STB binding, elfcpp::STV visibility, | |
292 | unsigned char nonvis) | |
f3e9c5c5 | 293 | { |
2ea97941 | 294 | this->init_base_undefined(name, version, type, binding, visibility, nonvis); |
dc1c8a16 | 295 | this->value_ = value; |
f3e9c5c5 ILT |
296 | this->symsize_ = 0; |
297 | } | |
298 | ||
6d1c4efb ILT |
299 | // Return an allocated string holding the symbol's name as |
300 | // name@version. This is used for relocatable links. | |
301 | ||
302 | std::string | |
303 | Symbol::versioned_name() const | |
304 | { | |
305 | gold_assert(this->version_ != NULL); | |
306 | std::string ret = this->name_; | |
307 | ret.push_back('@'); | |
308 | if (this->is_def_) | |
309 | ret.push_back('@'); | |
310 | ret += this->version_; | |
311 | return ret; | |
312 | } | |
313 | ||
8a5e3e08 ILT |
314 | // Return true if SHNDX represents a common symbol. |
315 | ||
316 | bool | |
2ea97941 | 317 | Symbol::is_common_shndx(unsigned int shndx) |
8a5e3e08 | 318 | { |
2ea97941 ILT |
319 | return (shndx == elfcpp::SHN_COMMON |
320 | || shndx == parameters->target().small_common_shndx() | |
321 | || shndx == parameters->target().large_common_shndx()); | |
8a5e3e08 ILT |
322 | } |
323 | ||
c7912668 ILT |
324 | // Allocate a common symbol. |
325 | ||
326 | template<int size> | |
327 | void | |
2ea97941 | 328 | Sized_symbol<size>::allocate_common(Output_data* od, Value_type value) |
c7912668 ILT |
329 | { |
330 | this->allocate_base_common(od); | |
2ea97941 | 331 | this->value_ = value; |
c7912668 ILT |
332 | } |
333 | ||
c82fbeee CS |
334 | // The ""'s around str ensure str is a string literal, so sizeof works. |
335 | #define strprefix(var, str) (strncmp(var, str, sizeof("" str "") - 1) == 0) | |
336 | ||
436ca963 ILT |
337 | // Return true if this symbol should be added to the dynamic symbol |
338 | // table. | |
339 | ||
7b549045 | 340 | bool |
ce97fa81 | 341 | Symbol::should_add_dynsym_entry(Symbol_table* symtab) const |
436ca963 | 342 | { |
badc8139 RÁE |
343 | // If the symbol is only present on plugin files, the plugin decided we |
344 | // don't need it. | |
345 | if (!this->in_real_elf()) | |
346 | return false; | |
347 | ||
436ca963 ILT |
348 | // If the symbol is used by a dynamic relocation, we need to add it. |
349 | if (this->needs_dynsym_entry()) | |
350 | return true; | |
351 | ||
6d03d481 ST |
352 | // If this symbol's section is not added, the symbol need not be added. |
353 | // The section may have been GCed. Note that export_dynamic is being | |
354 | // overridden here. This should not be done for shared objects. | |
355 | if (parameters->options().gc_sections() | |
356 | && !parameters->options().shared() | |
357 | && this->source() == Symbol::FROM_OBJECT | |
358 | && !this->object()->is_dynamic()) | |
359 | { | |
360 | Relobj* relobj = static_cast<Relobj*>(this->object()); | |
361 | bool is_ordinary; | |
2ea97941 ILT |
362 | unsigned int shndx = this->shndx(&is_ordinary); |
363 | if (is_ordinary && shndx != elfcpp::SHN_UNDEF | |
ce97fa81 ST |
364 | && !relobj->is_section_included(shndx) |
365 | && !symtab->is_section_folded(relobj, shndx)) | |
6d03d481 ST |
366 | return false; |
367 | } | |
368 | ||
31821be0 CC |
369 | // If the symbol was forced dynamic in a --dynamic-list file |
370 | // or an --export-dynamic-symbol option, add it. | |
b24fdbf5 CC |
371 | if (!this->is_from_dynobj() |
372 | && (parameters->options().in_dynamic_list(this->name()) | |
373 | || parameters->options().is_export_dynamic_symbol(this->name()))) | |
31821be0 CC |
374 | { |
375 | if (!this->is_forced_local()) | |
376 | return true; | |
377 | gold_warning(_("Cannot export local symbol '%s'"), | |
378 | this->demangled_name().c_str()); | |
379 | return false; | |
380 | } | |
381 | ||
55a93433 ILT |
382 | // If the symbol was forced local in a version script, do not add it. |
383 | if (this->is_forced_local()) | |
384 | return false; | |
385 | ||
c82fbeee CS |
386 | // If dynamic-list-data was specified, add any STT_OBJECT. |
387 | if (parameters->options().dynamic_list_data() | |
388 | && !this->is_from_dynobj() | |
389 | && this->type() == elfcpp::STT_OBJECT) | |
390 | return true; | |
391 | ||
392 | // If --dynamic-list-cpp-new was specified, add any new/delete symbol. | |
393 | // If --dynamic-list-cpp-typeinfo was specified, add any typeinfo symbols. | |
394 | if ((parameters->options().dynamic_list_cpp_new() | |
395 | || parameters->options().dynamic_list_cpp_typeinfo()) | |
396 | && !this->is_from_dynobj()) | |
397 | { | |
398 | // TODO(csilvers): We could probably figure out if we're an operator | |
399 | // new/delete or typeinfo without the need to demangle. | |
2ea97941 ILT |
400 | char* demangled_name = cplus_demangle(this->name(), |
401 | DMGL_ANSI | DMGL_PARAMS); | |
402 | if (demangled_name == NULL) | |
c82fbeee CS |
403 | { |
404 | // Not a C++ symbol, so it can't satisfy these flags | |
405 | } | |
406 | else if (parameters->options().dynamic_list_cpp_new() | |
2ea97941 ILT |
407 | && (strprefix(demangled_name, "operator new") |
408 | || strprefix(demangled_name, "operator delete"))) | |
c82fbeee | 409 | { |
2ea97941 | 410 | free(demangled_name); |
c82fbeee CS |
411 | return true; |
412 | } | |
413 | else if (parameters->options().dynamic_list_cpp_typeinfo() | |
2ea97941 ILT |
414 | && (strprefix(demangled_name, "typeinfo name for") |
415 | || strprefix(demangled_name, "typeinfo for"))) | |
c82fbeee | 416 | { |
2ea97941 | 417 | free(demangled_name); |
c82fbeee CS |
418 | return true; |
419 | } | |
420 | else | |
2ea97941 | 421 | free(demangled_name); |
c82fbeee CS |
422 | } |
423 | ||
436ca963 | 424 | // If exporting all symbols or building a shared library, |
4b889c30 | 425 | // or the symbol should be globally unique (GNU_UNIQUE), |
436ca963 ILT |
426 | // and the symbol is defined in a regular object and is |
427 | // externally visible, we need to add it. | |
4b889c30 IC |
428 | if ((parameters->options().export_dynamic() |
429 | || parameters->options().shared() | |
430 | || (parameters->options().gnu_unique() | |
431 | && this->binding() == elfcpp::STB_GNU_UNIQUE)) | |
436ca963 | 432 | && !this->is_from_dynobj() |
f3ae1b28 | 433 | && !this->is_undefined() |
436ca963 ILT |
434 | && this->is_externally_visible()) |
435 | return true; | |
436 | ||
437 | return false; | |
438 | } | |
439 | ||
b3b74ddc ILT |
440 | // Return true if the final value of this symbol is known at link |
441 | // time. | |
442 | ||
443 | bool | |
444 | Symbol::final_value_is_known() const | |
445 | { | |
446 | // If we are not generating an executable, then no final values are | |
a6a17750 CC |
447 | // known, since they will change at runtime, with the exception of |
448 | // TLS symbols in a position-independent executable. | |
449 | if ((parameters->options().output_is_position_independent() | |
450 | || parameters->options().relocatable()) | |
451 | && !(this->type() == elfcpp::STT_TLS | |
452 | && parameters->options().pie())) | |
229ecf80 L |
453 | { |
454 | // Non-default weak undefined symbols in executable and shared | |
455 | // library are always resolved to 0 at runtime. | |
456 | if (this->visibility() != elfcpp::STV_DEFAULT | |
457 | && this->is_weak_undefined() | |
458 | && !parameters->options().relocatable()) | |
459 | return true; | |
460 | ||
461 | return false; | |
462 | } | |
b3b74ddc | 463 | |
f3e9c5c5 ILT |
464 | // If the symbol is not from an object file, and is not undefined, |
465 | // then it is defined, and known. | |
b3b74ddc | 466 | if (this->source_ != FROM_OBJECT) |
f3e9c5c5 ILT |
467 | { |
468 | if (this->source_ != IS_UNDEFINED) | |
469 | return true; | |
470 | } | |
471 | else | |
472 | { | |
473 | // If the symbol is from a dynamic object, then the final value | |
474 | // is not known. | |
475 | if (this->object()->is_dynamic()) | |
476 | return false; | |
b3b74ddc | 477 | |
f3e9c5c5 ILT |
478 | // If the symbol is not undefined (it is defined or common), |
479 | // then the final value is known. | |
480 | if (!this->is_undefined()) | |
481 | return true; | |
482 | } | |
b3b74ddc ILT |
483 | |
484 | // If the symbol is undefined, then whether the final value is known | |
485 | // depends on whether we are doing a static link. If we are doing a | |
486 | // dynamic link, then the final value could be filled in at runtime. | |
487 | // This could reasonably be the case for a weak undefined symbol. | |
488 | return parameters->doing_static_link(); | |
489 | } | |
490 | ||
77e65537 | 491 | // Return the output section where this symbol is defined. |
a445fddf | 492 | |
77e65537 ILT |
493 | Output_section* |
494 | Symbol::output_section() const | |
a445fddf ILT |
495 | { |
496 | switch (this->source_) | |
497 | { | |
498 | case FROM_OBJECT: | |
77e65537 | 499 | { |
34ca2bd7 | 500 | unsigned int shndx = this->u2_.shndx; |
2ea97941 | 501 | if (shndx != elfcpp::SHN_UNDEF && this->is_ordinary_shndx_) |
77e65537 | 502 | { |
34ca2bd7 AM |
503 | gold_assert(!this->u1_.object->is_dynamic()); |
504 | gold_assert(this->u1_.object->pluginobj() == NULL); | |
505 | Relobj* relobj = static_cast<Relobj*>(this->u1_.object); | |
2ea97941 | 506 | return relobj->output_section(shndx); |
77e65537 ILT |
507 | } |
508 | return NULL; | |
509 | } | |
510 | ||
a445fddf | 511 | case IN_OUTPUT_DATA: |
34ca2bd7 | 512 | return this->u1_.output_data->output_section(); |
77e65537 | 513 | |
a445fddf | 514 | case IN_OUTPUT_SEGMENT: |
f3e9c5c5 ILT |
515 | case IS_CONSTANT: |
516 | case IS_UNDEFINED: | |
77e65537 ILT |
517 | return NULL; |
518 | ||
519 | default: | |
520 | gold_unreachable(); | |
521 | } | |
522 | } | |
523 | ||
524 | // Set the symbol's output section. This is used for symbols defined | |
525 | // in scripts. This should only be called after the symbol table has | |
526 | // been finalized. | |
527 | ||
528 | void | |
529 | Symbol::set_output_section(Output_section* os) | |
530 | { | |
531 | switch (this->source_) | |
532 | { | |
533 | case FROM_OBJECT: | |
534 | case IN_OUTPUT_DATA: | |
535 | gold_assert(this->output_section() == os); | |
536 | break; | |
f3e9c5c5 | 537 | case IS_CONSTANT: |
77e65537 | 538 | this->source_ = IN_OUTPUT_DATA; |
34ca2bd7 AM |
539 | this->u1_.output_data = os; |
540 | this->u2_.offset_is_from_end = false; | |
77e65537 ILT |
541 | break; |
542 | case IN_OUTPUT_SEGMENT: | |
f3e9c5c5 | 543 | case IS_UNDEFINED: |
a445fddf ILT |
544 | default: |
545 | gold_unreachable(); | |
546 | } | |
547 | } | |
548 | ||
d1bddd3c CC |
549 | // Set the symbol's output segment. This is used for pre-defined |
550 | // symbols whose segments aren't known until after layout is done | |
551 | // (e.g., __ehdr_start). | |
552 | ||
553 | void | |
554 | Symbol::set_output_segment(Output_segment* os, Segment_offset_base base) | |
555 | { | |
556 | gold_assert(this->is_predefined_); | |
557 | this->source_ = IN_OUTPUT_SEGMENT; | |
34ca2bd7 AM |
558 | this->u1_.output_segment = os; |
559 | this->u2_.offset_base = base; | |
d1bddd3c CC |
560 | } |
561 | ||
562 | // Set the symbol to undefined. This is used for pre-defined | |
563 | // symbols whose segments aren't known until after layout is done | |
564 | // (e.g., __ehdr_start). | |
565 | ||
566 | void | |
567 | Symbol::set_undefined() | |
568 | { | |
d1bddd3c CC |
569 | this->source_ = IS_UNDEFINED; |
570 | this->is_predefined_ = false; | |
571 | } | |
572 | ||
14bfc3f5 ILT |
573 | // Class Symbol_table. |
574 | ||
09124467 | 575 | Symbol_table::Symbol_table(unsigned int count, |
2ea97941 | 576 | const Version_script_info& version_script) |
aa465b19 AM |
577 | : saw_undefined_(0), offset_(0), has_gnu_output_(false), table_(count), |
578 | namepool_(), forwarders_(), commons_(), tls_commons_(), small_commons_(), | |
8a5e3e08 | 579 | large_commons_(), forced_locals_(), warnings_(), |
dc1c8a16 CC |
580 | version_script_(version_script), gc_(NULL), icf_(NULL), |
581 | target_symbols_() | |
14bfc3f5 | 582 | { |
6d013333 | 583 | namepool_.reserve(count); |
14bfc3f5 ILT |
584 | } |
585 | ||
586 | Symbol_table::~Symbol_table() | |
587 | { | |
588 | } | |
589 | ||
ad8f37d1 ILT |
590 | // The symbol table key equality function. This is called with |
591 | // Stringpool keys. | |
14bfc3f5 | 592 | |
ad8f37d1 | 593 | inline bool |
14bfc3f5 ILT |
594 | Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key& k1, |
595 | const Symbol_table_key& k2) const | |
596 | { | |
597 | return k1.first == k2.first && k1.second == k2.second; | |
598 | } | |
599 | ||
ef15dade | 600 | bool |
efc6fa12 | 601 | Symbol_table::is_section_folded(Relobj* obj, unsigned int shndx) const |
ef15dade | 602 | { |
032ce4e9 | 603 | return (parameters->options().icf_enabled() |
2ea97941 | 604 | && this->icf_->is_section_folded(obj, shndx)); |
ef15dade ST |
605 | } |
606 | ||
31821be0 CC |
607 | // For symbols that have been listed with a -u or --export-dynamic-symbol |
608 | // option, add them to the work list to avoid gc'ing them. | |
6d03d481 ST |
609 | |
610 | void | |
88a4108b | 611 | Symbol_table::gc_mark_undef_symbols(Layout* layout) |
6d03d481 ST |
612 | { |
613 | for (options::String_set::const_iterator p = | |
614 | parameters->options().undefined_begin(); | |
615 | p != parameters->options().undefined_end(); | |
616 | ++p) | |
617 | { | |
2ea97941 ILT |
618 | const char* name = p->c_str(); |
619 | Symbol* sym = this->lookup(name); | |
ca09d69a | 620 | gold_assert(sym != NULL); |
6d03d481 ST |
621 | if (sym->source() == Symbol::FROM_OBJECT |
622 | && !sym->object()->is_dynamic()) | |
623 | { | |
e81fea4d | 624 | this->gc_mark_symbol(sym); |
6d03d481 ST |
625 | } |
626 | } | |
88a4108b | 627 | |
31821be0 CC |
628 | for (options::String_set::const_iterator p = |
629 | parameters->options().export_dynamic_symbol_begin(); | |
630 | p != parameters->options().export_dynamic_symbol_end(); | |
631 | ++p) | |
632 | { | |
633 | const char* name = p->c_str(); | |
634 | Symbol* sym = this->lookup(name); | |
1d5dfe78 CC |
635 | // It's not an error if a symbol named by --export-dynamic-symbol |
636 | // is undefined. | |
637 | if (sym != NULL | |
638 | && sym->source() == Symbol::FROM_OBJECT | |
31821be0 CC |
639 | && !sym->object()->is_dynamic()) |
640 | { | |
e81fea4d | 641 | this->gc_mark_symbol(sym); |
31821be0 CC |
642 | } |
643 | } | |
644 | ||
88a4108b ILT |
645 | for (Script_options::referenced_const_iterator p = |
646 | layout->script_options()->referenced_begin(); | |
647 | p != layout->script_options()->referenced_end(); | |
648 | ++p) | |
649 | { | |
650 | Symbol* sym = this->lookup(p->c_str()); | |
651 | gold_assert(sym != NULL); | |
652 | if (sym->source() == Symbol::FROM_OBJECT | |
653 | && !sym->object()->is_dynamic()) | |
654 | { | |
e81fea4d | 655 | this->gc_mark_symbol(sym); |
88a4108b ILT |
656 | } |
657 | } | |
6d03d481 ST |
658 | } |
659 | ||
660 | void | |
7257cc92 | 661 | Symbol_table::gc_mark_symbol(Symbol* sym) |
6d03d481 | 662 | { |
7257cc92 | 663 | // Add the object and section to the work list. |
7257cc92 ST |
664 | bool is_ordinary; |
665 | unsigned int shndx = sym->shndx(&is_ordinary); | |
efc6fa12 | 666 | if (is_ordinary && shndx != elfcpp::SHN_UNDEF && !sym->object()->is_dynamic()) |
6d03d481 | 667 | { |
7257cc92 | 668 | gold_assert(this->gc_!= NULL); |
efc6fa12 CC |
669 | Relobj* relobj = static_cast<Relobj*>(sym->object()); |
670 | this->gc_->worklist().push_back(Section_id(relobj, shndx)); | |
6d03d481 | 671 | } |
e81fea4d | 672 | parameters->target().gc_mark_symbol(this, sym); |
6d03d481 ST |
673 | } |
674 | ||
675 | // When doing garbage collection, keep symbols that have been seen in | |
676 | // dynamic objects. | |
677 | inline void | |
678 | Symbol_table::gc_mark_dyn_syms(Symbol* sym) | |
679 | { | |
680 | if (sym->in_dyn() && sym->source() == Symbol::FROM_OBJECT | |
681 | && !sym->object()->is_dynamic()) | |
7257cc92 | 682 | this->gc_mark_symbol(sym); |
6d03d481 ST |
683 | } |
684 | ||
dd8670e5 | 685 | // Make TO a symbol which forwards to FROM. |
14bfc3f5 ILT |
686 | |
687 | void | |
688 | Symbol_table::make_forwarder(Symbol* from, Symbol* to) | |
689 | { | |
a3ad94ed ILT |
690 | gold_assert(from != to); |
691 | gold_assert(!from->is_forwarder() && !to->is_forwarder()); | |
14bfc3f5 ILT |
692 | this->forwarders_[from] = to; |
693 | from->set_forwarder(); | |
694 | } | |
695 | ||
61ba1cf9 ILT |
696 | // Resolve the forwards from FROM, returning the real symbol. |
697 | ||
14bfc3f5 | 698 | Symbol* |
c06b7b0b | 699 | Symbol_table::resolve_forwards(const Symbol* from) const |
14bfc3f5 | 700 | { |
a3ad94ed | 701 | gold_assert(from->is_forwarder()); |
c06b7b0b | 702 | Unordered_map<const Symbol*, Symbol*>::const_iterator p = |
14bfc3f5 | 703 | this->forwarders_.find(from); |
a3ad94ed | 704 | gold_assert(p != this->forwarders_.end()); |
14bfc3f5 ILT |
705 | return p->second; |
706 | } | |
707 | ||
61ba1cf9 ILT |
708 | // Look up a symbol by name. |
709 | ||
710 | Symbol* | |
2ea97941 | 711 | Symbol_table::lookup(const char* name, const char* version) const |
61ba1cf9 | 712 | { |
f0641a0b | 713 | Stringpool::Key name_key; |
2ea97941 ILT |
714 | name = this->namepool_.find(name, &name_key); |
715 | if (name == NULL) | |
61ba1cf9 | 716 | return NULL; |
f0641a0b ILT |
717 | |
718 | Stringpool::Key version_key = 0; | |
2ea97941 | 719 | if (version != NULL) |
61ba1cf9 | 720 | { |
2ea97941 ILT |
721 | version = this->namepool_.find(version, &version_key); |
722 | if (version == NULL) | |
61ba1cf9 ILT |
723 | return NULL; |
724 | } | |
725 | ||
f0641a0b | 726 | Symbol_table_key key(name_key, version_key); |
61ba1cf9 ILT |
727 | Symbol_table::Symbol_table_type::const_iterator p = this->table_.find(key); |
728 | if (p == this->table_.end()) | |
729 | return NULL; | |
730 | return p->second; | |
731 | } | |
732 | ||
14bfc3f5 ILT |
733 | // Resolve a Symbol with another Symbol. This is only used in the |
734 | // unusual case where there are references to both an unversioned | |
735 | // symbol and a symbol with a version, and we then discover that that | |
1564db8d ILT |
736 | // version is the default version. Because this is unusual, we do |
737 | // this the slow way, by converting back to an ELF symbol. | |
14bfc3f5 | 738 | |
1564db8d | 739 | template<int size, bool big_endian> |
14bfc3f5 | 740 | void |
95d14cd3 | 741 | Symbol_table::resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from) |
14bfc3f5 | 742 | { |
1564db8d ILT |
743 | unsigned char buf[elfcpp::Elf_sizes<size>::sym_size]; |
744 | elfcpp::Sym_write<size, big_endian> esym(buf); | |
d491d34e | 745 | // We don't bother to set the st_name or the st_shndx field. |
1564db8d ILT |
746 | esym.put_st_value(from->value()); |
747 | esym.put_st_size(from->symsize()); | |
748 | esym.put_st_info(from->binding(), from->type()); | |
ead1e424 | 749 | esym.put_st_other(from->visibility(), from->nonvis()); |
d491d34e | 750 | bool is_ordinary; |
2ea97941 ILT |
751 | unsigned int shndx = from->shndx(&is_ordinary); |
752 | this->resolve(to, esym.sym(), shndx, is_ordinary, shndx, from->object(), | |
b45e00b3 | 753 | from->version(), true); |
1ebd95fd ILT |
754 | if (from->in_reg()) |
755 | to->set_in_reg(); | |
756 | if (from->in_dyn()) | |
757 | to->set_in_dyn(); | |
6d03d481 ST |
758 | if (parameters->options().gc_sections()) |
759 | this->gc_mark_dyn_syms(to); | |
14bfc3f5 ILT |
760 | } |
761 | ||
0602e05a ILT |
762 | // Record that a symbol is forced to be local by a version script or |
763 | // by visibility. | |
55a93433 ILT |
764 | |
765 | void | |
766 | Symbol_table::force_local(Symbol* sym) | |
767 | { | |
768 | if (!sym->is_defined() && !sym->is_common()) | |
769 | return; | |
770 | if (sym->is_forced_local()) | |
771 | { | |
772 | // We already got this one. | |
773 | return; | |
774 | } | |
775 | sym->set_is_forced_local(); | |
776 | this->forced_locals_.push_back(sym); | |
777 | } | |
778 | ||
0864d551 ILT |
779 | // Adjust NAME for wrapping, and update *NAME_KEY if necessary. This |
780 | // is only called for undefined symbols, when at least one --wrap | |
781 | // option was used. | |
782 | ||
783 | const char* | |
2ea97941 | 784 | Symbol_table::wrap_symbol(const char* name, Stringpool::Key* name_key) |
0864d551 ILT |
785 | { |
786 | // For some targets, we need to ignore a specific character when | |
787 | // wrapping, and add it back later. | |
788 | char prefix = '\0'; | |
2ea97941 | 789 | if (name[0] == parameters->target().wrap_char()) |
0864d551 | 790 | { |
2ea97941 ILT |
791 | prefix = name[0]; |
792 | ++name; | |
0864d551 ILT |
793 | } |
794 | ||
2ea97941 | 795 | if (parameters->options().is_wrap(name)) |
0864d551 ILT |
796 | { |
797 | // Turn NAME into __wrap_NAME. | |
798 | std::string s; | |
799 | if (prefix != '\0') | |
800 | s += prefix; | |
801 | s += "__wrap_"; | |
2ea97941 | 802 | s += name; |
0864d551 ILT |
803 | |
804 | // This will give us both the old and new name in NAMEPOOL_, but | |
805 | // that is OK. Only the versions we need will wind up in the | |
806 | // real string table in the output file. | |
807 | return this->namepool_.add(s.c_str(), true, name_key); | |
808 | } | |
809 | ||
810 | const char* const real_prefix = "__real_"; | |
811 | const size_t real_prefix_length = strlen(real_prefix); | |
2ea97941 ILT |
812 | if (strncmp(name, real_prefix, real_prefix_length) == 0 |
813 | && parameters->options().is_wrap(name + real_prefix_length)) | |
0864d551 ILT |
814 | { |
815 | // Turn __real_NAME into NAME. | |
816 | std::string s; | |
817 | if (prefix != '\0') | |
818 | s += prefix; | |
2ea97941 | 819 | s += name + real_prefix_length; |
0864d551 ILT |
820 | return this->namepool_.add(s.c_str(), true, name_key); |
821 | } | |
822 | ||
2ea97941 | 823 | return name; |
0864d551 ILT |
824 | } |
825 | ||
8c500701 ILT |
826 | // This is called when we see a symbol NAME/VERSION, and the symbol |
827 | // already exists in the symbol table, and VERSION is marked as being | |
828 | // the default version. SYM is the NAME/VERSION symbol we just added. | |
829 | // DEFAULT_IS_NEW is true if this is the first time we have seen the | |
830 | // symbol NAME/NULL. PDEF points to the entry for NAME/NULL. | |
831 | ||
832 | template<int size, bool big_endian> | |
833 | void | |
834 | Symbol_table::define_default_version(Sized_symbol<size>* sym, | |
835 | bool default_is_new, | |
836 | Symbol_table_type::iterator pdef) | |
837 | { | |
838 | if (default_is_new) | |
839 | { | |
840 | // This is the first time we have seen NAME/NULL. Make | |
841 | // NAME/NULL point to NAME/VERSION, and mark SYM as the default | |
842 | // version. | |
843 | pdef->second = sym; | |
844 | sym->set_is_default(); | |
845 | } | |
846 | else if (pdef->second == sym) | |
847 | { | |
848 | // NAME/NULL already points to NAME/VERSION. Don't mark the | |
849 | // symbol as the default if it is not already the default. | |
850 | } | |
851 | else | |
852 | { | |
853 | // This is the unfortunate case where we already have entries | |
854 | // for both NAME/VERSION and NAME/NULL. We now see a symbol | |
855 | // NAME/VERSION where VERSION is the default version. We have | |
856 | // already resolved this new symbol with the existing | |
857 | // NAME/VERSION symbol. | |
858 | ||
859 | // It's possible that NAME/NULL and NAME/VERSION are both | |
860 | // defined in regular objects. This can only happen if one | |
861 | // object file defines foo and another defines foo@@ver. This | |
862 | // is somewhat obscure, but we call it a multiple definition | |
863 | // error. | |
864 | ||
865 | // It's possible that NAME/NULL actually has a version, in which | |
866 | // case it won't be the same as VERSION. This happens with | |
867 | // ver_test_7.so in the testsuite for the symbol t2_2. We see | |
868 | // t2_2@@VER2, so we define both t2_2/VER2 and t2_2/NULL. We | |
869 | // then see an unadorned t2_2 in an object file and give it | |
870 | // version VER1 from the version script. This looks like a | |
871 | // default definition for VER1, so it looks like we should merge | |
872 | // t2_2/NULL with t2_2/VER1. That doesn't make sense, but it's | |
873 | // not obvious that this is an error, either. So we just punt. | |
874 | ||
875 | // If one of the symbols has non-default visibility, and the | |
876 | // other is defined in a shared object, then they are different | |
877 | // symbols. | |
878 | ||
b60ecbc6 CC |
879 | // If the two symbols are from different shared objects, |
880 | // they are different symbols. | |
881 | ||
8c500701 ILT |
882 | // Otherwise, we just resolve the symbols as though they were |
883 | // the same. | |
884 | ||
885 | if (pdef->second->version() != NULL) | |
886 | gold_assert(pdef->second->version() != sym->version()); | |
887 | else if (sym->visibility() != elfcpp::STV_DEFAULT | |
888 | && pdef->second->is_from_dynobj()) | |
889 | ; | |
890 | else if (pdef->second->visibility() != elfcpp::STV_DEFAULT | |
891 | && sym->is_from_dynobj()) | |
892 | ; | |
b60ecbc6 CC |
893 | else if (pdef->second->is_from_dynobj() |
894 | && sym->is_from_dynobj() | |
e3f07b5b | 895 | && pdef->second->is_defined() |
b60ecbc6 CC |
896 | && pdef->second->object() != sym->object()) |
897 | ; | |
8c500701 ILT |
898 | else |
899 | { | |
900 | const Sized_symbol<size>* symdef; | |
901 | symdef = this->get_sized_symbol<size>(pdef->second); | |
902 | Symbol_table::resolve<size, big_endian>(sym, symdef); | |
903 | this->make_forwarder(pdef->second, sym); | |
904 | pdef->second = sym; | |
905 | sym->set_is_default(); | |
906 | } | |
907 | } | |
908 | } | |
909 | ||
14bfc3f5 ILT |
910 | // Add one symbol from OBJECT to the symbol table. NAME is symbol |
911 | // name and VERSION is the version; both are canonicalized. DEF is | |
d491d34e ILT |
912 | // whether this is the default version. ST_SHNDX is the symbol's |
913 | // section index; IS_ORDINARY is whether this is a normal section | |
914 | // rather than a special code. | |
14bfc3f5 | 915 | |
8781f709 ILT |
916 | // If IS_DEFAULT_VERSION is true, then this is the definition of a |
917 | // default version of a symbol. That means that any lookup of | |
918 | // NAME/NULL and any lookup of NAME/VERSION should always return the | |
919 | // same symbol. This is obvious for references, but in particular we | |
920 | // want to do this for definitions: overriding NAME/NULL should also | |
921 | // override NAME/VERSION. If we don't do that, it would be very hard | |
922 | // to override functions in a shared library which uses versioning. | |
14bfc3f5 ILT |
923 | |
924 | // We implement this by simply making both entries in the hash table | |
925 | // point to the same Symbol structure. That is easy enough if this is | |
926 | // the first time we see NAME/NULL or NAME/VERSION, but it is possible | |
927 | // that we have seen both already, in which case they will both have | |
928 | // independent entries in the symbol table. We can't simply change | |
929 | // the symbol table entry, because we have pointers to the entries | |
930 | // attached to the object files. So we mark the entry attached to the | |
931 | // object file as a forwarder, and record it in the forwarders_ map. | |
932 | // Note that entries in the hash table will never be marked as | |
933 | // forwarders. | |
70e654ba | 934 | // |
d491d34e ILT |
935 | // ORIG_ST_SHNDX and ST_SHNDX are almost always the same. |
936 | // ORIG_ST_SHNDX is the section index in the input file, or SHN_UNDEF | |
937 | // for a special section code. ST_SHNDX may be modified if the symbol | |
938 | // is defined in a section being discarded. | |
14bfc3f5 ILT |
939 | |
940 | template<int size, bool big_endian> | |
aeddab66 | 941 | Sized_symbol<size>* |
2ea97941 | 942 | Symbol_table::add_from_object(Object* object, |
ca09d69a | 943 | const char* name, |
f0641a0b | 944 | Stringpool::Key name_key, |
ca09d69a | 945 | const char* version, |
f0641a0b | 946 | Stringpool::Key version_key, |
8781f709 | 947 | bool is_default_version, |
70e654ba | 948 | const elfcpp::Sym<size, big_endian>& sym, |
d491d34e ILT |
949 | unsigned int st_shndx, |
950 | bool is_ordinary, | |
951 | unsigned int orig_st_shndx) | |
14bfc3f5 | 952 | { |
c5818ff1 | 953 | // Print a message if this symbol is being traced. |
2ea97941 | 954 | if (parameters->options().is_trace_symbol(name)) |
c5818ff1 | 955 | { |
d491d34e | 956 | if (orig_st_shndx == elfcpp::SHN_UNDEF) |
2ea97941 | 957 | gold_info(_("%s: reference to %s"), object->name().c_str(), name); |
c5818ff1 | 958 | else |
2ea97941 | 959 | gold_info(_("%s: definition of %s"), object->name().c_str(), name); |
c5818ff1 CC |
960 | } |
961 | ||
0864d551 ILT |
962 | // For an undefined symbol, we may need to adjust the name using |
963 | // --wrap. | |
d491d34e | 964 | if (orig_st_shndx == elfcpp::SHN_UNDEF |
c5818ff1 | 965 | && parameters->options().any_wrap()) |
0864d551 | 966 | { |
2ea97941 ILT |
967 | const char* wrap_name = this->wrap_symbol(name, &name_key); |
968 | if (wrap_name != name) | |
0864d551 ILT |
969 | { |
970 | // If we see a reference to malloc with version GLIBC_2.0, | |
971 | // and we turn it into a reference to __wrap_malloc, then we | |
972 | // discard the version number. Otherwise the user would be | |
973 | // required to specify the correct version for | |
974 | // __wrap_malloc. | |
2ea97941 | 975 | version = NULL; |
0864d551 | 976 | version_key = 0; |
2ea97941 | 977 | name = wrap_name; |
0864d551 ILT |
978 | } |
979 | } | |
980 | ||
14bfc3f5 ILT |
981 | Symbol* const snull = NULL; |
982 | std::pair<typename Symbol_table_type::iterator, bool> ins = | |
f0641a0b ILT |
983 | this->table_.insert(std::make_pair(std::make_pair(name_key, version_key), |
984 | snull)); | |
14bfc3f5 | 985 | |
8781f709 | 986 | std::pair<typename Symbol_table_type::iterator, bool> insdefault = |
14bfc3f5 | 987 | std::make_pair(this->table_.end(), false); |
8781f709 | 988 | if (is_default_version) |
14bfc3f5 | 989 | { |
f0641a0b | 990 | const Stringpool::Key vnull_key = 0; |
8781f709 ILT |
991 | insdefault = this->table_.insert(std::make_pair(std::make_pair(name_key, |
992 | vnull_key), | |
993 | snull)); | |
14bfc3f5 ILT |
994 | } |
995 | ||
996 | // ins.first: an iterator, which is a pointer to a pair. | |
997 | // ins.first->first: the key (a pair of name and version). | |
998 | // ins.first->second: the value (Symbol*). | |
999 | // ins.second: true if new entry was inserted, false if not. | |
1000 | ||
890d1555 | 1001 | Sized_symbol<size>* ret = NULL; |
71739b69 | 1002 | bool was_undefined_in_reg; |
ead1e424 | 1003 | bool was_common; |
14bfc3f5 ILT |
1004 | if (!ins.second) |
1005 | { | |
1006 | // We already have an entry for NAME/VERSION. | |
7d1a9ebb | 1007 | ret = this->get_sized_symbol<size>(ins.first->second); |
a3ad94ed | 1008 | gold_assert(ret != NULL); |
ead1e424 | 1009 | |
89d80185 L |
1010 | bool ret_is_ordinary; |
1011 | const unsigned int ret_shndx = ret->shndx(&ret_is_ordinary); | |
1012 | ||
71739b69 | 1013 | was_undefined_in_reg = ret->is_undefined() && ret->in_reg(); |
1707f183 CC |
1014 | // Commons from plugins are just placeholders. |
1015 | was_common = ret->is_common() && ret->object()->pluginobj() == NULL; | |
ead1e424 | 1016 | |
89d80185 L |
1017 | // It's possible for a symbol to be defined in an object file |
1018 | // using .symver to give it a version, and for there to also be | |
1019 | // a linker script giving that symbol the same version. We | |
1020 | // don't want to give a multiple-definition error for this | |
1021 | // harmless redefinition. | |
1022 | bool check_version = false; | |
1023 | bool erase_default_version = false; | |
1024 | bool no_default_version = false; | |
1025 | if (ret->source() == Symbol::FROM_OBJECT | |
1026 | && is_ordinary | |
1027 | && ret_shndx == st_shndx) | |
1028 | { | |
1029 | if (ret->object() == object) | |
1030 | check_version = true; | |
1031 | ||
1032 | if (version != NULL && version == ret->version()) | |
1033 | { | |
1034 | // Don't give a multiple-definition error if the hidden | |
1035 | // version from .symver is the same as the default version | |
1036 | // from the unversioned symbol. | |
1037 | if (is_default_version && !ret->is_default ()) | |
1038 | { | |
1039 | no_default_version = true; | |
1040 | if (insdefault.second) | |
1041 | { | |
1042 | // Don't make the unversioned symbol the default | |
1043 | // version. | |
1044 | is_default_version = false; | |
1045 | erase_default_version = true; | |
1046 | check_version = true; | |
1047 | } | |
1048 | } | |
1049 | else if (!is_default_version && ret->is_default ()) | |
1050 | { | |
1051 | // Don't make the unversioned symbol the default | |
1052 | // version. | |
1053 | ret->set_is_not_default(); | |
1054 | no_default_version = true; | |
1055 | check_version = true; | |
1056 | } | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | if (!(check_version | |
1061 | && ret->is_defined() | |
1062 | && ret_is_ordinary | |
1063 | && (no_default_version | |
1064 | || ret->value() == sym.get_st_value()))) | |
1065 | this->resolve(ret, sym, st_shndx, is_ordinary, orig_st_shndx, | |
1066 | object, version, is_default_version); | |
1067 | ||
6d03d481 ST |
1068 | if (parameters->options().gc_sections()) |
1069 | this->gc_mark_dyn_syms(ret); | |
14bfc3f5 | 1070 | |
8781f709 ILT |
1071 | if (is_default_version) |
1072 | this->define_default_version<size, big_endian>(ret, insdefault.second, | |
1073 | insdefault.first); | |
3ac0a36c | 1074 | else |
b45e00b3 | 1075 | { |
89d80185 | 1076 | if (version != NULL && check_version) |
b45e00b3 | 1077 | { |
3ac0a36c CC |
1078 | // We have seen NAME/VERSION already, and marked it as the |
1079 | // default version, but now we see a definition for | |
1080 | // NAME/VERSION that is not the default version. This can | |
1081 | // happen when the assembler generates two symbols for | |
1082 | // a symbol as a result of a ".symver foo,foo@VER" | |
1083 | // directive. We see the first unversioned symbol and | |
1084 | // we may mark it as the default version (from a | |
1085 | // version script); then we see the second versioned | |
1086 | // symbol and we need to override the first. | |
1087 | // In any other case, the two symbols should have generated | |
1088 | // a multiple definition error. | |
1089 | // (See PR gold/18703.) | |
89d80185 L |
1090 | // If the hidden version from .symver is the same as the |
1091 | // default version from the unversioned symbol, don't make | |
1092 | // the unversioned symbol the default versioned symbol. | |
b45e00b3 | 1093 | const Stringpool::Key vnull_key = 0; |
89d80185 L |
1094 | if (erase_default_version) |
1095 | this->table_.erase(std::make_pair(name_key, vnull_key)); | |
1096 | else if (ret->object() == object) | |
1097 | { | |
1098 | ret->set_is_not_default(); | |
1099 | this->table_.erase(std::make_pair(name_key, vnull_key)); | |
1100 | } | |
b45e00b3 CC |
1101 | } |
1102 | } | |
14bfc3f5 ILT |
1103 | } |
1104 | else | |
1105 | { | |
1106 | // This is the first time we have seen NAME/VERSION. | |
a3ad94ed | 1107 | gold_assert(ins.first->second == NULL); |
ead1e424 | 1108 | |
8781f709 | 1109 | if (is_default_version && !insdefault.second) |
14bfc3f5 | 1110 | { |
14b31740 ILT |
1111 | // We already have an entry for NAME/NULL. If we override |
1112 | // it, then change it to NAME/VERSION. | |
8781f709 | 1113 | ret = this->get_sized_symbol<size>(insdefault.first->second); |
18e6b24e | 1114 | |
890d1555 CC |
1115 | // If the existing symbol already has a version, |
1116 | // don't override it with the new symbol. | |
1117 | // This should only happen when the new symbol | |
1118 | // is from a shared library. | |
1119 | if (ret->version() != NULL) | |
1120 | { | |
1121 | if (!object->is_dynamic()) | |
1122 | { | |
1123 | gold_warning(_("%s: conflicting default version definition" | |
1124 | " for %s@@%s"), | |
1125 | object->name().c_str(), name, version); | |
1126 | if (ret->source() == Symbol::FROM_OBJECT) | |
1127 | gold_info(_("%s: %s: previous definition of %s@@%s here"), | |
1128 | program_name, | |
1129 | ret->object()->name().c_str(), | |
1130 | name, ret->version()); | |
1131 | } | |
1132 | ret = NULL; | |
1133 | is_default_version = false; | |
1134 | } | |
1135 | else | |
1136 | { | |
1137 | was_undefined_in_reg = ret->is_undefined() && ret->in_reg(); | |
1138 | // Commons from plugins are just placeholders. | |
1139 | was_common = (ret->is_common() | |
1140 | && ret->object()->pluginobj() == NULL); | |
1141 | ||
1142 | this->resolve(ret, sym, st_shndx, is_ordinary, orig_st_shndx, | |
1143 | object, version, is_default_version); | |
1144 | if (parameters->options().gc_sections()) | |
1145 | this->gc_mark_dyn_syms(ret); | |
1146 | ins.first->second = ret; | |
1147 | } | |
14bfc3f5 | 1148 | } |
890d1555 CC |
1149 | |
1150 | if (ret == NULL) | |
14bfc3f5 | 1151 | { |
71739b69 | 1152 | was_undefined_in_reg = false; |
18e6b24e ILT |
1153 | was_common = false; |
1154 | ||
f6ce93d6 | 1155 | Sized_target<size, big_endian>* target = |
029ba973 | 1156 | parameters->sized_target<size, big_endian>(); |
1564db8d ILT |
1157 | if (!target->has_make_symbol()) |
1158 | ret = new Sized_symbol<size>(); | |
1159 | else | |
14bfc3f5 | 1160 | { |
dc1c8a16 CC |
1161 | ret = target->make_symbol(name, sym.get_st_type(), object, |
1162 | st_shndx, sym.get_st_value()); | |
1564db8d | 1163 | if (ret == NULL) |
14bfc3f5 ILT |
1164 | { |
1165 | // This means that we don't want a symbol table | |
1166 | // entry after all. | |
8781f709 | 1167 | if (!is_default_version) |
14bfc3f5 ILT |
1168 | this->table_.erase(ins.first); |
1169 | else | |
1170 | { | |
8781f709 ILT |
1171 | this->table_.erase(insdefault.first); |
1172 | // Inserting INSDEFAULT invalidated INS. | |
f0641a0b ILT |
1173 | this->table_.erase(std::make_pair(name_key, |
1174 | version_key)); | |
14bfc3f5 ILT |
1175 | } |
1176 | return NULL; | |
1177 | } | |
1178 | } | |
14bfc3f5 | 1179 | |
2ea97941 | 1180 | ret->init_object(name, version, object, sym, st_shndx, is_ordinary); |
1564db8d | 1181 | |
14bfc3f5 | 1182 | ins.first->second = ret; |
8781f709 | 1183 | if (is_default_version) |
14bfc3f5 ILT |
1184 | { |
1185 | // This is the first time we have seen NAME/NULL. Point | |
1186 | // it at the new entry for NAME/VERSION. | |
8781f709 ILT |
1187 | gold_assert(insdefault.second); |
1188 | insdefault.first->second = ret; | |
14bfc3f5 ILT |
1189 | } |
1190 | } | |
8c500701 | 1191 | |
8781f709 | 1192 | if (is_default_version) |
8c500701 | 1193 | ret->set_is_default(); |
14bfc3f5 ILT |
1194 | } |
1195 | ||
71739b69 SC |
1196 | // Record every time we see a new undefined symbol, to speed up archive |
1197 | // groups. We only care about symbols undefined in regular objects here | |
1198 | // because undefined symbols only in dynamic objects should't trigger rescans. | |
1199 | if (!was_undefined_in_reg && ret->is_undefined() && ret->in_reg()) | |
0f3b89d8 ILT |
1200 | { |
1201 | ++this->saw_undefined_; | |
1202 | if (parameters->options().has_plugins()) | |
1203 | parameters->options().plugins()->new_undefined_symbol(ret); | |
1204 | } | |
ead1e424 ILT |
1205 | |
1206 | // Keep track of common symbols, to speed up common symbol | |
1707f183 CC |
1207 | // allocation. Don't record commons from plugin objects; |
1208 | // we need to wait until we see the real symbol in the | |
1209 | // replacement file. | |
1210 | if (!was_common && ret->is_common() && ret->object()->pluginobj() == NULL) | |
155a0dd7 | 1211 | { |
8a5e3e08 | 1212 | if (ret->type() == elfcpp::STT_TLS) |
155a0dd7 | 1213 | this->tls_commons_.push_back(ret); |
8a5e3e08 ILT |
1214 | else if (!is_ordinary |
1215 | && st_shndx == parameters->target().small_common_shndx()) | |
1216 | this->small_commons_.push_back(ret); | |
1217 | else if (!is_ordinary | |
1218 | && st_shndx == parameters->target().large_common_shndx()) | |
1219 | this->large_commons_.push_back(ret); | |
1220 | else | |
1221 | this->commons_.push_back(ret); | |
155a0dd7 | 1222 | } |
ead1e424 | 1223 | |
0602e05a ILT |
1224 | // If we're not doing a relocatable link, then any symbol with |
1225 | // hidden or internal visibility is local. | |
1226 | if ((ret->visibility() == elfcpp::STV_HIDDEN | |
1227 | || ret->visibility() == elfcpp::STV_INTERNAL) | |
1228 | && (ret->binding() == elfcpp::STB_GLOBAL | |
adcf2816 | 1229 | || ret->binding() == elfcpp::STB_GNU_UNIQUE |
0602e05a ILT |
1230 | || ret->binding() == elfcpp::STB_WEAK) |
1231 | && !parameters->options().relocatable()) | |
1232 | this->force_local(ret); | |
1233 | ||
14bfc3f5 ILT |
1234 | return ret; |
1235 | } | |
1236 | ||
f6ce93d6 | 1237 | // Add all the symbols in a relocatable object to the hash table. |
14bfc3f5 ILT |
1238 | |
1239 | template<int size, bool big_endian> | |
1240 | void | |
dbe717ef | 1241 | Symbol_table::add_from_relobj( |
6fa2a40b | 1242 | Sized_relobj_file<size, big_endian>* relobj, |
f6ce93d6 | 1243 | const unsigned char* syms, |
14bfc3f5 | 1244 | size_t count, |
d491d34e | 1245 | size_t symndx_offset, |
14bfc3f5 ILT |
1246 | const char* sym_names, |
1247 | size_t sym_name_size, | |
6fa2a40b | 1248 | typename Sized_relobj_file<size, big_endian>::Symbols* sympointers, |
ca09d69a | 1249 | size_t* defined) |
14bfc3f5 | 1250 | { |
92de84a6 ILT |
1251 | *defined = 0; |
1252 | ||
8851ecca | 1253 | gold_assert(size == parameters->target().get_size()); |
14bfc3f5 | 1254 | |
a783673b ILT |
1255 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
1256 | ||
88dd47ac ILT |
1257 | const bool just_symbols = relobj->just_symbols(); |
1258 | ||
f6ce93d6 | 1259 | const unsigned char* p = syms; |
a783673b | 1260 | for (size_t i = 0; i < count; ++i, p += sym_size) |
14bfc3f5 | 1261 | { |
92de84a6 ILT |
1262 | (*sympointers)[i] = NULL; |
1263 | ||
14bfc3f5 ILT |
1264 | elfcpp::Sym<size, big_endian> sym(p); |
1265 | ||
d491d34e | 1266 | unsigned int st_name = sym.get_st_name(); |
14bfc3f5 ILT |
1267 | if (st_name >= sym_name_size) |
1268 | { | |
75f2446e ILT |
1269 | relobj->error(_("bad global symbol name offset %u at %zu"), |
1270 | st_name, i); | |
1271 | continue; | |
14bfc3f5 ILT |
1272 | } |
1273 | ||
2ea97941 | 1274 | const char* name = sym_names + st_name; |
dbe717ef | 1275 | |
bebf4942 | 1276 | if (!parameters->options().relocatable() |
e601d38b AM |
1277 | && name[0] == '_' |
1278 | && name[1] == '_' | |
1279 | && strcmp (name + (name[2] == '_'), "__gnu_lto_slim") == 0) | |
7cd4e5b7 AM |
1280 | gold_info(_("%s: plugin needed to handle lto object"), |
1281 | relobj->name().c_str()); | |
1282 | ||
d491d34e ILT |
1283 | bool is_ordinary; |
1284 | unsigned int st_shndx = relobj->adjust_sym_shndx(i + symndx_offset, | |
1285 | sym.get_st_shndx(), | |
1286 | &is_ordinary); | |
1287 | unsigned int orig_st_shndx = st_shndx; | |
1288 | if (!is_ordinary) | |
1289 | orig_st_shndx = elfcpp::SHN_UNDEF; | |
1290 | ||
92de84a6 ILT |
1291 | if (st_shndx != elfcpp::SHN_UNDEF) |
1292 | ++*defined; | |
1293 | ||
a783673b ILT |
1294 | // A symbol defined in a section which we are not including must |
1295 | // be treated as an undefined symbol. | |
880cd20d | 1296 | bool is_defined_in_discarded_section = false; |
a783673b | 1297 | if (st_shndx != elfcpp::SHN_UNDEF |
d491d34e | 1298 | && is_ordinary |
ce97fa81 ST |
1299 | && !relobj->is_section_included(st_shndx) |
1300 | && !this->is_section_folded(relobj, st_shndx)) | |
880cd20d ILT |
1301 | { |
1302 | st_shndx = elfcpp::SHN_UNDEF; | |
1303 | is_defined_in_discarded_section = true; | |
1304 | } | |
a783673b | 1305 | |
14bfc3f5 ILT |
1306 | // In an object file, an '@' in the name separates the symbol |
1307 | // name from the version name. If there are two '@' characters, | |
1308 | // this is the default version. | |
2ea97941 | 1309 | const char* ver = strchr(name, '@'); |
057ead22 | 1310 | Stringpool::Key ver_key = 0; |
09124467 | 1311 | int namelen = 0; |
8781f709 ILT |
1312 | // IS_DEFAULT_VERSION: is the version default? |
1313 | // IS_FORCED_LOCAL: is the symbol forced local? | |
1314 | bool is_default_version = false; | |
1315 | bool is_forced_local = false; | |
09124467 | 1316 | |
a7dac153 CC |
1317 | // FIXME: For incremental links, we don't store version information, |
1318 | // so we need to ignore version symbols for now. | |
1319 | if (parameters->incremental_update() && ver != NULL) | |
1320 | { | |
1321 | namelen = ver - name; | |
1322 | ver = NULL; | |
1323 | } | |
1324 | ||
09124467 ILT |
1325 | if (ver != NULL) |
1326 | { | |
1327 | // The symbol name is of the form foo@VERSION or foo@@VERSION | |
2ea97941 | 1328 | namelen = ver - name; |
09124467 ILT |
1329 | ++ver; |
1330 | if (*ver == '@') | |
1331 | { | |
8781f709 | 1332 | is_default_version = true; |
09124467 ILT |
1333 | ++ver; |
1334 | } | |
057ead22 | 1335 | ver = this->namepool_.add(ver, true, &ver_key); |
09124467 | 1336 | } |
5871526f ILT |
1337 | // We don't want to assign a version to an undefined symbol, |
1338 | // even if it is listed in the version script. FIXME: What | |
1339 | // about a common symbol? | |
057ead22 ILT |
1340 | else |
1341 | { | |
2ea97941 | 1342 | namelen = strlen(name); |
057ead22 ILT |
1343 | if (!this->version_script_.empty() |
1344 | && st_shndx != elfcpp::SHN_UNDEF) | |
1345 | { | |
1346 | // The symbol name did not have a version, but the | |
1347 | // version script may assign a version anyway. | |
2ea97941 | 1348 | std::string version; |
98e090bd ILT |
1349 | bool is_global; |
1350 | if (this->version_script_.get_symbol_version(name, &version, | |
1351 | &is_global)) | |
057ead22 | 1352 | { |
98e090bd ILT |
1353 | if (!is_global) |
1354 | is_forced_local = true; | |
1355 | else if (!version.empty()) | |
057ead22 | 1356 | { |
2ea97941 ILT |
1357 | ver = this->namepool_.add_with_length(version.c_str(), |
1358 | version.length(), | |
057ead22 ILT |
1359 | true, |
1360 | &ver_key); | |
8781f709 | 1361 | is_default_version = true; |
057ead22 ILT |
1362 | } |
1363 | } | |
057ead22 ILT |
1364 | } |
1365 | } | |
14bfc3f5 | 1366 | |
d491d34e ILT |
1367 | elfcpp::Sym<size, big_endian>* psym = &sym; |
1368 | unsigned char symbuf[sym_size]; | |
1369 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
88dd47ac ILT |
1370 | if (just_symbols) |
1371 | { | |
d491d34e | 1372 | memcpy(symbuf, p, sym_size); |
88dd47ac | 1373 | elfcpp::Sym_write<size, big_endian> sw(symbuf); |
9590bf25 CC |
1374 | if (orig_st_shndx != elfcpp::SHN_UNDEF |
1375 | && is_ordinary | |
1376 | && relobj->e_type() == elfcpp::ET_REL) | |
88dd47ac | 1377 | { |
9590bf25 CC |
1378 | // Symbol values in relocatable object files are section |
1379 | // relative. This is normally what we want, but since here | |
1380 | // we are converting the symbol to absolute we need to add | |
1381 | // the section address. The section address in an object | |
88dd47ac ILT |
1382 | // file is normally zero, but people can use a linker |
1383 | // script to change it. | |
d491d34e ILT |
1384 | sw.put_st_value(sym.get_st_value() |
1385 | + relobj->section_address(orig_st_shndx)); | |
88dd47ac | 1386 | } |
d491d34e ILT |
1387 | st_shndx = elfcpp::SHN_ABS; |
1388 | is_ordinary = false; | |
88dd47ac ILT |
1389 | psym = &sym2; |
1390 | } | |
1391 | ||
65514900 | 1392 | // Fix up visibility if object has no-export set. |
1c74fab0 ILT |
1393 | if (relobj->no_export() |
1394 | && (orig_st_shndx != elfcpp::SHN_UNDEF || !is_ordinary)) | |
65514900 CC |
1395 | { |
1396 | // We may have copied symbol already above. | |
1397 | if (psym != &sym2) | |
1398 | { | |
1399 | memcpy(symbuf, p, sym_size); | |
1400 | psym = &sym2; | |
1401 | } | |
1402 | ||
1403 | elfcpp::STV visibility = sym2.get_st_visibility(); | |
1404 | if (visibility == elfcpp::STV_DEFAULT | |
1405 | || visibility == elfcpp::STV_PROTECTED) | |
1406 | { | |
1407 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
1408 | unsigned char nonvis = sym2.get_st_nonvis(); | |
1409 | sw.put_st_other(elfcpp::STV_HIDDEN, nonvis); | |
1410 | } | |
1411 | } | |
1412 | ||
057ead22 | 1413 | Stringpool::Key name_key; |
2ea97941 | 1414 | name = this->namepool_.add_with_length(name, namelen, true, |
057ead22 ILT |
1415 | &name_key); |
1416 | ||
aeddab66 | 1417 | Sized_symbol<size>* res; |
2ea97941 | 1418 | res = this->add_from_object(relobj, name, name_key, ver, ver_key, |
8781f709 ILT |
1419 | is_default_version, *psym, st_shndx, |
1420 | is_ordinary, orig_st_shndx); | |
2c00092d JC |
1421 | |
1422 | if (res == NULL) | |
1423 | continue; | |
6d03d481 | 1424 | |
804eb480 ST |
1425 | if (is_forced_local) |
1426 | this->force_local(res); | |
1427 | ||
7257cc92 ST |
1428 | // Do not treat this symbol as garbage if this symbol will be |
1429 | // exported to the dynamic symbol table. This is true when | |
1430 | // building a shared library or using --export-dynamic and | |
1431 | // the symbol is externally visible. | |
1432 | if (parameters->options().gc_sections() | |
1433 | && res->is_externally_visible() | |
1434 | && !res->is_from_dynobj() | |
1435 | && (parameters->options().shared() | |
fd834e57 CC |
1436 | || parameters->options().export_dynamic() |
1437 | || parameters->options().in_dynamic_list(res->name()))) | |
7257cc92 | 1438 | this->gc_mark_symbol(res); |
f0641a0b | 1439 | |
880cd20d ILT |
1440 | if (is_defined_in_discarded_section) |
1441 | res->set_is_defined_in_discarded_section(); | |
1442 | ||
730cdc88 | 1443 | (*sympointers)[i] = res; |
14bfc3f5 ILT |
1444 | } |
1445 | } | |
1446 | ||
89fc3421 CC |
1447 | // Add a symbol from a plugin-claimed file. |
1448 | ||
1449 | template<int size, bool big_endian> | |
1450 | Symbol* | |
1451 | Symbol_table::add_from_pluginobj( | |
1452 | Sized_pluginobj<size, big_endian>* obj, | |
2ea97941 | 1453 | const char* name, |
89fc3421 CC |
1454 | const char* ver, |
1455 | elfcpp::Sym<size, big_endian>* sym) | |
1456 | { | |
1457 | unsigned int st_shndx = sym->get_st_shndx(); | |
24998053 | 1458 | bool is_ordinary = st_shndx < elfcpp::SHN_LORESERVE; |
89fc3421 CC |
1459 | |
1460 | Stringpool::Key ver_key = 0; | |
8781f709 ILT |
1461 | bool is_default_version = false; |
1462 | bool is_forced_local = false; | |
89fc3421 CC |
1463 | |
1464 | if (ver != NULL) | |
1465 | { | |
1466 | ver = this->namepool_.add(ver, true, &ver_key); | |
1467 | } | |
1468 | // We don't want to assign a version to an undefined symbol, | |
1469 | // even if it is listed in the version script. FIXME: What | |
1470 | // about a common symbol? | |
1471 | else | |
1472 | { | |
1473 | if (!this->version_script_.empty() | |
1474 | && st_shndx != elfcpp::SHN_UNDEF) | |
1475 | { | |
1476 | // The symbol name did not have a version, but the | |
1477 | // version script may assign a version anyway. | |
2ea97941 | 1478 | std::string version; |
98e090bd ILT |
1479 | bool is_global; |
1480 | if (this->version_script_.get_symbol_version(name, &version, | |
1481 | &is_global)) | |
89fc3421 | 1482 | { |
98e090bd ILT |
1483 | if (!is_global) |
1484 | is_forced_local = true; | |
1485 | else if (!version.empty()) | |
89fc3421 | 1486 | { |
2ea97941 ILT |
1487 | ver = this->namepool_.add_with_length(version.c_str(), |
1488 | version.length(), | |
89fc3421 CC |
1489 | true, |
1490 | &ver_key); | |
8781f709 | 1491 | is_default_version = true; |
89fc3421 CC |
1492 | } |
1493 | } | |
89fc3421 CC |
1494 | } |
1495 | } | |
1496 | ||
1497 | Stringpool::Key name_key; | |
2ea97941 | 1498 | name = this->namepool_.add(name, true, &name_key); |
89fc3421 CC |
1499 | |
1500 | Sized_symbol<size>* res; | |
2ea97941 | 1501 | res = this->add_from_object(obj, name, name_key, ver, ver_key, |
8781f709 ILT |
1502 | is_default_version, *sym, st_shndx, |
1503 | is_ordinary, st_shndx); | |
89fc3421 | 1504 | |
2c00092d JC |
1505 | if (res == NULL) |
1506 | return NULL; | |
1507 | ||
8781f709 | 1508 | if (is_forced_local) |
0602e05a | 1509 | this->force_local(res); |
89fc3421 CC |
1510 | |
1511 | return res; | |
1512 | } | |
1513 | ||
dbe717ef ILT |
1514 | // Add all the symbols in a dynamic object to the hash table. |
1515 | ||
1516 | template<int size, bool big_endian> | |
1517 | void | |
1518 | Symbol_table::add_from_dynobj( | |
1519 | Sized_dynobj<size, big_endian>* dynobj, | |
1520 | const unsigned char* syms, | |
1521 | size_t count, | |
1522 | const char* sym_names, | |
1523 | size_t sym_name_size, | |
1524 | const unsigned char* versym, | |
1525 | size_t versym_size, | |
92de84a6 | 1526 | const std::vector<const char*>* version_map, |
6fa2a40b | 1527 | typename Sized_relobj_file<size, big_endian>::Symbols* sympointers, |
92de84a6 | 1528 | size_t* defined) |
dbe717ef | 1529 | { |
92de84a6 ILT |
1530 | *defined = 0; |
1531 | ||
8851ecca | 1532 | gold_assert(size == parameters->target().get_size()); |
dbe717ef | 1533 | |
88dd47ac ILT |
1534 | if (dynobj->just_symbols()) |
1535 | { | |
1536 | gold_error(_("--just-symbols does not make sense with a shared object")); | |
1537 | return; | |
1538 | } | |
1539 | ||
a7dac153 CC |
1540 | // FIXME: For incremental links, we don't store version information, |
1541 | // so we need to ignore version symbols for now. | |
1542 | if (parameters->incremental_update()) | |
1543 | versym = NULL; | |
1544 | ||
dbe717ef ILT |
1545 | if (versym != NULL && versym_size / 2 < count) |
1546 | { | |
75f2446e ILT |
1547 | dynobj->error(_("too few symbol versions")); |
1548 | return; | |
dbe717ef ILT |
1549 | } |
1550 | ||
1551 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1552 | ||
aeddab66 ILT |
1553 | // We keep a list of all STT_OBJECT symbols, so that we can resolve |
1554 | // weak aliases. This is necessary because if the dynamic object | |
1555 | // provides the same variable under two names, one of which is a | |
1556 | // weak definition, and the regular object refers to the weak | |
1557 | // definition, we have to put both the weak definition and the | |
1558 | // strong definition into the dynamic symbol table. Given a weak | |
1559 | // definition, the only way that we can find the corresponding | |
1560 | // strong definition, if any, is to search the symbol table. | |
1561 | std::vector<Sized_symbol<size>*> object_symbols; | |
1562 | ||
dbe717ef ILT |
1563 | const unsigned char* p = syms; |
1564 | const unsigned char* vs = versym; | |
1565 | for (size_t i = 0; i < count; ++i, p += sym_size, vs += 2) | |
1566 | { | |
1567 | elfcpp::Sym<size, big_endian> sym(p); | |
1568 | ||
92de84a6 ILT |
1569 | if (sympointers != NULL) |
1570 | (*sympointers)[i] = NULL; | |
1571 | ||
65778909 ILT |
1572 | // Ignore symbols with local binding or that have |
1573 | // internal or hidden visibility. | |
1574 | if (sym.get_st_bind() == elfcpp::STB_LOCAL | |
1575 | || sym.get_st_visibility() == elfcpp::STV_INTERNAL | |
1576 | || sym.get_st_visibility() == elfcpp::STV_HIDDEN) | |
dbe717ef ILT |
1577 | continue; |
1578 | ||
8bdcdf2c ILT |
1579 | // A protected symbol in a shared library must be treated as a |
1580 | // normal symbol when viewed from outside the shared library. | |
1581 | // Implement this by overriding the visibility here. | |
3d4fde69 CC |
1582 | // Likewise, an IFUNC symbol in a shared library must be treated |
1583 | // as a normal FUNC symbol. | |
8bdcdf2c ILT |
1584 | elfcpp::Sym<size, big_endian>* psym = &sym; |
1585 | unsigned char symbuf[sym_size]; | |
1586 | elfcpp::Sym<size, big_endian> sym2(symbuf); | |
3d4fde69 CC |
1587 | if (sym.get_st_visibility() == elfcpp::STV_PROTECTED |
1588 | || sym.get_st_type() == elfcpp::STT_GNU_IFUNC) | |
8bdcdf2c ILT |
1589 | { |
1590 | memcpy(symbuf, p, sym_size); | |
1591 | elfcpp::Sym_write<size, big_endian> sw(symbuf); | |
3d4fde69 CC |
1592 | if (sym.get_st_visibility() == elfcpp::STV_PROTECTED) |
1593 | sw.put_st_other(elfcpp::STV_DEFAULT, sym.get_st_nonvis()); | |
1594 | if (sym.get_st_type() == elfcpp::STT_GNU_IFUNC) | |
1595 | sw.put_st_info(sym.get_st_bind(), elfcpp::STT_FUNC); | |
8bdcdf2c ILT |
1596 | psym = &sym2; |
1597 | } | |
1598 | ||
1599 | unsigned int st_name = psym->get_st_name(); | |
dbe717ef ILT |
1600 | if (st_name >= sym_name_size) |
1601 | { | |
75f2446e ILT |
1602 | dynobj->error(_("bad symbol name offset %u at %zu"), |
1603 | st_name, i); | |
1604 | continue; | |
dbe717ef ILT |
1605 | } |
1606 | ||
2ea97941 | 1607 | const char* name = sym_names + st_name; |
dbe717ef | 1608 | |
d491d34e | 1609 | bool is_ordinary; |
8bdcdf2c | 1610 | unsigned int st_shndx = dynobj->adjust_sym_shndx(i, psym->get_st_shndx(), |
d491d34e ILT |
1611 | &is_ordinary); |
1612 | ||
92de84a6 ILT |
1613 | if (st_shndx != elfcpp::SHN_UNDEF) |
1614 | ++*defined; | |
1615 | ||
aeddab66 ILT |
1616 | Sized_symbol<size>* res; |
1617 | ||
dbe717ef ILT |
1618 | if (versym == NULL) |
1619 | { | |
1620 | Stringpool::Key name_key; | |
2ea97941 ILT |
1621 | name = this->namepool_.add(name, true, &name_key); |
1622 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, | |
8bdcdf2c | 1623 | false, *psym, st_shndx, is_ordinary, |
d491d34e | 1624 | st_shndx); |
dbe717ef | 1625 | } |
aeddab66 ILT |
1626 | else |
1627 | { | |
1628 | // Read the version information. | |
dbe717ef | 1629 | |
aeddab66 | 1630 | unsigned int v = elfcpp::Swap<16, big_endian>::readval(vs); |
dbe717ef | 1631 | |
aeddab66 ILT |
1632 | bool hidden = (v & elfcpp::VERSYM_HIDDEN) != 0; |
1633 | v &= elfcpp::VERSYM_VERSION; | |
dbe717ef | 1634 | |
aeddab66 ILT |
1635 | // The Sun documentation says that V can be VER_NDX_LOCAL, |
1636 | // or VER_NDX_GLOBAL, or a version index. The meaning of | |
1637 | // VER_NDX_LOCAL is defined as "Symbol has local scope." | |
1638 | // The old GNU linker will happily generate VER_NDX_LOCAL | |
1639 | // for an undefined symbol. I don't know what the Sun | |
1640 | // linker will generate. | |
dbe717ef | 1641 | |
aeddab66 | 1642 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
d491d34e | 1643 | && st_shndx != elfcpp::SHN_UNDEF) |
aeddab66 ILT |
1644 | { |
1645 | // This symbol should not be visible outside the object. | |
1646 | continue; | |
1647 | } | |
64707334 | 1648 | |
aeddab66 ILT |
1649 | // At this point we are definitely going to add this symbol. |
1650 | Stringpool::Key name_key; | |
2ea97941 | 1651 | name = this->namepool_.add(name, true, &name_key); |
dbe717ef | 1652 | |
aeddab66 ILT |
1653 | if (v == static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL) |
1654 | || v == static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL)) | |
1655 | { | |
1656 | // This symbol does not have a version. | |
2ea97941 | 1657 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
8bdcdf2c | 1658 | false, *psym, st_shndx, is_ordinary, |
d491d34e | 1659 | st_shndx); |
aeddab66 ILT |
1660 | } |
1661 | else | |
1662 | { | |
1663 | if (v >= version_map->size()) | |
1664 | { | |
1665 | dynobj->error(_("versym for symbol %zu out of range: %u"), | |
1666 | i, v); | |
1667 | continue; | |
1668 | } | |
dbe717ef | 1669 | |
2ea97941 ILT |
1670 | const char* version = (*version_map)[v]; |
1671 | if (version == NULL) | |
aeddab66 ILT |
1672 | { |
1673 | dynobj->error(_("versym for symbol %zu has no name: %u"), | |
1674 | i, v); | |
1675 | continue; | |
1676 | } | |
dbe717ef | 1677 | |
aeddab66 | 1678 | Stringpool::Key version_key; |
2ea97941 | 1679 | version = this->namepool_.add(version, true, &version_key); |
aeddab66 ILT |
1680 | |
1681 | // If this is an absolute symbol, and the version name | |
1682 | // and symbol name are the same, then this is the | |
1683 | // version definition symbol. These symbols exist to | |
1684 | // support using -u to pull in particular versions. We | |
1685 | // do not want to record a version for them. | |
d491d34e ILT |
1686 | if (st_shndx == elfcpp::SHN_ABS |
1687 | && !is_ordinary | |
aeddab66 | 1688 | && name_key == version_key) |
2ea97941 | 1689 | res = this->add_from_object(dynobj, name, name_key, NULL, 0, |
8bdcdf2c | 1690 | false, *psym, st_shndx, is_ordinary, |
d491d34e | 1691 | st_shndx); |
aeddab66 ILT |
1692 | else |
1693 | { | |
8781f709 ILT |
1694 | const bool is_default_version = |
1695 | !hidden && st_shndx != elfcpp::SHN_UNDEF; | |
2ea97941 | 1696 | res = this->add_from_object(dynobj, name, name_key, version, |
8781f709 ILT |
1697 | version_key, is_default_version, |
1698 | *psym, st_shndx, | |
d491d34e | 1699 | is_ordinary, st_shndx); |
aeddab66 ILT |
1700 | } |
1701 | } | |
dbe717ef ILT |
1702 | } |
1703 | ||
2c00092d JC |
1704 | if (res == NULL) |
1705 | continue; | |
1706 | ||
99a37bfd | 1707 | // Note that it is possible that RES was overridden by an |
a4bb589a | 1708 | // earlier object, in which case it can't be aliased here. |
d491d34e ILT |
1709 | if (st_shndx != elfcpp::SHN_UNDEF |
1710 | && is_ordinary | |
8bdcdf2c | 1711 | && psym->get_st_type() == elfcpp::STT_OBJECT |
99a37bfd ILT |
1712 | && res->source() == Symbol::FROM_OBJECT |
1713 | && res->object() == dynobj) | |
aeddab66 | 1714 | object_symbols.push_back(res); |
92de84a6 | 1715 | |
6eeb0170 CC |
1716 | // If the symbol has protected visibility in the dynobj, |
1717 | // mark it as such if it was not overridden. | |
1718 | if (res->source() == Symbol::FROM_OBJECT | |
1719 | && res->object() == dynobj | |
1720 | && sym.get_st_visibility() == elfcpp::STV_PROTECTED) | |
1721 | res->set_is_protected(); | |
1722 | ||
92de84a6 ILT |
1723 | if (sympointers != NULL) |
1724 | (*sympointers)[i] = res; | |
aeddab66 ILT |
1725 | } |
1726 | ||
1727 | this->record_weak_aliases(&object_symbols); | |
1728 | } | |
1729 | ||
cdc29364 CC |
1730 | // Add a symbol from a incremental object file. |
1731 | ||
1732 | template<int size, bool big_endian> | |
26d3c67d | 1733 | Sized_symbol<size>* |
cdc29364 CC |
1734 | Symbol_table::add_from_incrobj( |
1735 | Object* obj, | |
1736 | const char* name, | |
1737 | const char* ver, | |
1738 | elfcpp::Sym<size, big_endian>* sym) | |
1739 | { | |
1740 | unsigned int st_shndx = sym->get_st_shndx(); | |
1741 | bool is_ordinary = st_shndx < elfcpp::SHN_LORESERVE; | |
1742 | ||
1743 | Stringpool::Key ver_key = 0; | |
1744 | bool is_default_version = false; | |
cdc29364 CC |
1745 | |
1746 | Stringpool::Key name_key; | |
1747 | name = this->namepool_.add(name, true, &name_key); | |
1748 | ||
1749 | Sized_symbol<size>* res; | |
1750 | res = this->add_from_object(obj, name, name_key, ver, ver_key, | |
1751 | is_default_version, *sym, st_shndx, | |
1752 | is_ordinary, st_shndx); | |
1753 | ||
cdc29364 CC |
1754 | return res; |
1755 | } | |
1756 | ||
aeddab66 ILT |
1757 | // This is used to sort weak aliases. We sort them first by section |
1758 | // index, then by offset, then by weak ahead of strong. | |
1759 | ||
1760 | template<int size> | |
1761 | class Weak_alias_sorter | |
1762 | { | |
1763 | public: | |
1764 | bool operator()(const Sized_symbol<size>*, const Sized_symbol<size>*) const; | |
1765 | }; | |
1766 | ||
1767 | template<int size> | |
1768 | bool | |
1769 | Weak_alias_sorter<size>::operator()(const Sized_symbol<size>* s1, | |
1770 | const Sized_symbol<size>* s2) const | |
1771 | { | |
d491d34e ILT |
1772 | bool is_ordinary; |
1773 | unsigned int s1_shndx = s1->shndx(&is_ordinary); | |
1774 | gold_assert(is_ordinary); | |
1775 | unsigned int s2_shndx = s2->shndx(&is_ordinary); | |
1776 | gold_assert(is_ordinary); | |
1777 | if (s1_shndx != s2_shndx) | |
1778 | return s1_shndx < s2_shndx; | |
1779 | ||
aeddab66 ILT |
1780 | if (s1->value() != s2->value()) |
1781 | return s1->value() < s2->value(); | |
1782 | if (s1->binding() != s2->binding()) | |
1783 | { | |
1784 | if (s1->binding() == elfcpp::STB_WEAK) | |
1785 | return true; | |
1786 | if (s2->binding() == elfcpp::STB_WEAK) | |
1787 | return false; | |
1788 | } | |
1789 | return std::string(s1->name()) < std::string(s2->name()); | |
1790 | } | |
dbe717ef | 1791 | |
aeddab66 ILT |
1792 | // SYMBOLS is a list of object symbols from a dynamic object. Look |
1793 | // for any weak aliases, and record them so that if we add the weak | |
1794 | // alias to the dynamic symbol table, we also add the corresponding | |
1795 | // strong symbol. | |
dbe717ef | 1796 | |
aeddab66 ILT |
1797 | template<int size> |
1798 | void | |
1799 | Symbol_table::record_weak_aliases(std::vector<Sized_symbol<size>*>* symbols) | |
1800 | { | |
1801 | // Sort the vector by section index, then by offset, then by weak | |
1802 | // ahead of strong. | |
1803 | std::sort(symbols->begin(), symbols->end(), Weak_alias_sorter<size>()); | |
1804 | ||
1805 | // Walk through the vector. For each weak definition, record | |
1806 | // aliases. | |
1807 | for (typename std::vector<Sized_symbol<size>*>::const_iterator p = | |
1808 | symbols->begin(); | |
1809 | p != symbols->end(); | |
1810 | ++p) | |
1811 | { | |
1812 | if ((*p)->binding() != elfcpp::STB_WEAK) | |
1813 | continue; | |
1814 | ||
1815 | // Build a circular list of weak aliases. Each symbol points to | |
1816 | // the next one in the circular list. | |
1817 | ||
1818 | Sized_symbol<size>* from_sym = *p; | |
1819 | typename std::vector<Sized_symbol<size>*>::const_iterator q; | |
1820 | for (q = p + 1; q != symbols->end(); ++q) | |
dbe717ef | 1821 | { |
d491d34e ILT |
1822 | bool dummy; |
1823 | if ((*q)->shndx(&dummy) != from_sym->shndx(&dummy) | |
aeddab66 ILT |
1824 | || (*q)->value() != from_sym->value()) |
1825 | break; | |
1826 | ||
1827 | this->weak_aliases_[from_sym] = *q; | |
1828 | from_sym->set_has_alias(); | |
1829 | from_sym = *q; | |
dbe717ef ILT |
1830 | } |
1831 | ||
aeddab66 ILT |
1832 | if (from_sym != *p) |
1833 | { | |
1834 | this->weak_aliases_[from_sym] = *p; | |
1835 | from_sym->set_has_alias(); | |
1836 | } | |
dbe717ef | 1837 | |
aeddab66 | 1838 | p = q - 1; |
dbe717ef ILT |
1839 | } |
1840 | } | |
1841 | ||
ead1e424 ILT |
1842 | // Create and return a specially defined symbol. If ONLY_IF_REF is |
1843 | // true, then only create the symbol if there is a reference to it. | |
86f2e683 | 1844 | // If this does not return NULL, it sets *POLDSYM to the existing |
8c500701 ILT |
1845 | // symbol if there is one. This sets *RESOLVE_OLDSYM if we should |
1846 | // resolve the newly created symbol to the old one. This | |
1847 | // canonicalizes *PNAME and *PVERSION. | |
ead1e424 ILT |
1848 | |
1849 | template<int size, bool big_endian> | |
1850 | Sized_symbol<size>* | |
9b07f471 ILT |
1851 | Symbol_table::define_special_symbol(const char** pname, const char** pversion, |
1852 | bool only_if_ref, | |
dc8d2d90 | 1853 | elfcpp::STV visibility, |
8c500701 | 1854 | Sized_symbol<size>** poldsym, |
40d7d93f | 1855 | bool* resolve_oldsym, bool is_forced_local) |
ead1e424 | 1856 | { |
8c500701 | 1857 | *resolve_oldsym = false; |
8cc69fb6 | 1858 | *poldsym = NULL; |
ead1e424 | 1859 | |
55a93433 ILT |
1860 | // If the caller didn't give us a version, see if we get one from |
1861 | // the version script. | |
057ead22 | 1862 | std::string v; |
8c500701 | 1863 | bool is_default_version = false; |
40d7d93f | 1864 | if (!is_forced_local && *pversion == NULL) |
55a93433 | 1865 | { |
98e090bd ILT |
1866 | bool is_global; |
1867 | if (this->version_script_.get_symbol_version(*pname, &v, &is_global)) | |
057ead22 | 1868 | { |
98e090bd ILT |
1869 | if (is_global && !v.empty()) |
1870 | { | |
1871 | *pversion = v.c_str(); | |
1872 | // If we get the version from a version script, then we | |
1873 | // are also the default version. | |
1874 | is_default_version = true; | |
1875 | } | |
057ead22 | 1876 | } |
55a93433 ILT |
1877 | } |
1878 | ||
8c500701 ILT |
1879 | Symbol* oldsym; |
1880 | Sized_symbol<size>* sym; | |
1881 | ||
1882 | bool add_to_table = false; | |
1883 | typename Symbol_table_type::iterator add_loc = this->table_.end(); | |
1884 | bool add_def_to_table = false; | |
1885 | typename Symbol_table_type::iterator add_def_loc = this->table_.end(); | |
1886 | ||
ead1e424 ILT |
1887 | if (only_if_ref) |
1888 | { | |
306d9ef0 | 1889 | oldsym = this->lookup(*pname, *pversion); |
8c500701 ILT |
1890 | if (oldsym == NULL && is_default_version) |
1891 | oldsym = this->lookup(*pname, NULL); | |
dc8d2d90 | 1892 | if (oldsym == NULL) |
ead1e424 | 1893 | return NULL; |
dc8d2d90 L |
1894 | if (!oldsym->is_undefined()) |
1895 | { | |
1896 | // Skip if the old definition is from a regular object. | |
1897 | if (!oldsym->is_from_dynobj()) | |
1898 | return NULL; | |
1899 | ||
1900 | // If the symbol has hidden or internal visibility, ignore | |
1901 | // definition and reference from a dynamic object. | |
1902 | if ((visibility == elfcpp::STV_HIDDEN | |
1903 | || visibility == elfcpp::STV_INTERNAL) | |
1904 | && !oldsym->in_reg()) | |
1905 | return NULL; | |
1906 | } | |
306d9ef0 ILT |
1907 | |
1908 | *pname = oldsym->name(); | |
eebd87a5 ILT |
1909 | if (is_default_version) |
1910 | *pversion = this->namepool_.add(*pversion, true, NULL); | |
1911 | else | |
8c500701 | 1912 | *pversion = oldsym->version(); |
ead1e424 ILT |
1913 | } |
1914 | else | |
1915 | { | |
14b31740 | 1916 | // Canonicalize NAME and VERSION. |
f0641a0b | 1917 | Stringpool::Key name_key; |
cfd73a4e | 1918 | *pname = this->namepool_.add(*pname, true, &name_key); |
ead1e424 | 1919 | |
14b31740 | 1920 | Stringpool::Key version_key = 0; |
306d9ef0 | 1921 | if (*pversion != NULL) |
cfd73a4e | 1922 | *pversion = this->namepool_.add(*pversion, true, &version_key); |
14b31740 | 1923 | |
ead1e424 | 1924 | Symbol* const snull = NULL; |
ead1e424 | 1925 | std::pair<typename Symbol_table_type::iterator, bool> ins = |
14b31740 ILT |
1926 | this->table_.insert(std::make_pair(std::make_pair(name_key, |
1927 | version_key), | |
ead1e424 ILT |
1928 | snull)); |
1929 | ||
8781f709 | 1930 | std::pair<typename Symbol_table_type::iterator, bool> insdefault = |
8c500701 ILT |
1931 | std::make_pair(this->table_.end(), false); |
1932 | if (is_default_version) | |
1933 | { | |
1934 | const Stringpool::Key vnull = 0; | |
8781f709 ILT |
1935 | insdefault = |
1936 | this->table_.insert(std::make_pair(std::make_pair(name_key, | |
1937 | vnull), | |
1938 | snull)); | |
8c500701 ILT |
1939 | } |
1940 | ||
ead1e424 ILT |
1941 | if (!ins.second) |
1942 | { | |
14b31740 | 1943 | // We already have a symbol table entry for NAME/VERSION. |
ead1e424 | 1944 | oldsym = ins.first->second; |
a3ad94ed | 1945 | gold_assert(oldsym != NULL); |
8c500701 ILT |
1946 | |
1947 | if (is_default_version) | |
1948 | { | |
1949 | Sized_symbol<size>* soldsym = | |
1950 | this->get_sized_symbol<size>(oldsym); | |
1951 | this->define_default_version<size, big_endian>(soldsym, | |
8781f709 ILT |
1952 | insdefault.second, |
1953 | insdefault.first); | |
8c500701 | 1954 | } |
ead1e424 ILT |
1955 | } |
1956 | else | |
1957 | { | |
1958 | // We haven't seen this symbol before. | |
a3ad94ed | 1959 | gold_assert(ins.first->second == NULL); |
8c500701 ILT |
1960 | |
1961 | add_to_table = true; | |
1962 | add_loc = ins.first; | |
1963 | ||
1b115e8e CC |
1964 | if (is_default_version |
1965 | && !insdefault.second | |
1966 | && insdefault.first->second->version() == NULL) | |
8c500701 ILT |
1967 | { |
1968 | // We are adding NAME/VERSION, and it is the default | |
1b115e8e CC |
1969 | // version. We already have an entry for NAME/NULL |
1970 | // that does not already have a version. | |
8781f709 | 1971 | oldsym = insdefault.first->second; |
8c500701 ILT |
1972 | *resolve_oldsym = true; |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | oldsym = NULL; | |
1977 | ||
1978 | if (is_default_version) | |
1979 | { | |
1980 | add_def_to_table = true; | |
8781f709 | 1981 | add_def_loc = insdefault.first; |
8c500701 ILT |
1982 | } |
1983 | } | |
ead1e424 ILT |
1984 | } |
1985 | } | |
1986 | ||
8851ecca ILT |
1987 | const Target& target = parameters->target(); |
1988 | if (!target.has_make_symbol()) | |
86f2e683 ILT |
1989 | sym = new Sized_symbol<size>(); |
1990 | else | |
ead1e424 | 1991 | { |
029ba973 ILT |
1992 | Sized_target<size, big_endian>* sized_target = |
1993 | parameters->sized_target<size, big_endian>(); | |
dc1c8a16 CC |
1994 | sym = sized_target->make_symbol(*pname, elfcpp::STT_NOTYPE, |
1995 | NULL, elfcpp::SHN_UNDEF, 0); | |
86f2e683 ILT |
1996 | if (sym == NULL) |
1997 | return NULL; | |
1998 | } | |
ead1e424 | 1999 | |
86f2e683 ILT |
2000 | if (add_to_table) |
2001 | add_loc->second = sym; | |
2002 | else | |
2003 | gold_assert(oldsym != NULL); | |
ead1e424 | 2004 | |
8c500701 ILT |
2005 | if (add_def_to_table) |
2006 | add_def_loc->second = sym; | |
2007 | ||
7d1a9ebb | 2008 | *poldsym = this->get_sized_symbol<size>(oldsym); |
ead1e424 ILT |
2009 | |
2010 | return sym; | |
2011 | } | |
2012 | ||
2013 | // Define a symbol based on an Output_data. | |
2014 | ||
14b31740 | 2015 | Symbol* |
2ea97941 ILT |
2016 | Symbol_table::define_in_output_data(const char* name, |
2017 | const char* version, | |
99fff23b | 2018 | Defined defined, |
9b07f471 | 2019 | Output_data* od, |
2ea97941 ILT |
2020 | uint64_t value, |
2021 | uint64_t symsize, | |
9b07f471 ILT |
2022 | elfcpp::STT type, |
2023 | elfcpp::STB binding, | |
ead1e424 ILT |
2024 | elfcpp::STV visibility, |
2025 | unsigned char nonvis, | |
2ea97941 | 2026 | bool offset_is_from_end, |
ead1e424 ILT |
2027 | bool only_if_ref) |
2028 | { | |
8851ecca | 2029 | if (parameters->target().get_size() == 32) |
86f2e683 ILT |
2030 | { |
2031 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
99fff23b | 2032 | return this->do_define_in_output_data<32>(name, version, defined, od, |
2ea97941 | 2033 | value, symsize, type, binding, |
86f2e683 | 2034 | visibility, nonvis, |
2ea97941 | 2035 | offset_is_from_end, |
86f2e683 ILT |
2036 | only_if_ref); |
2037 | #else | |
2038 | gold_unreachable(); | |
2039 | #endif | |
2040 | } | |
8851ecca | 2041 | else if (parameters->target().get_size() == 64) |
86f2e683 ILT |
2042 | { |
2043 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
99fff23b | 2044 | return this->do_define_in_output_data<64>(name, version, defined, od, |
2ea97941 | 2045 | value, symsize, type, binding, |
86f2e683 | 2046 | visibility, nonvis, |
2ea97941 | 2047 | offset_is_from_end, |
86f2e683 ILT |
2048 | only_if_ref); |
2049 | #else | |
2050 | gold_unreachable(); | |
2051 | #endif | |
2052 | } | |
ead1e424 | 2053 | else |
a3ad94ed | 2054 | gold_unreachable(); |
ead1e424 ILT |
2055 | } |
2056 | ||
2057 | // Define a symbol in an Output_data, sized version. | |
2058 | ||
2059 | template<int size> | |
14b31740 | 2060 | Sized_symbol<size>* |
ead1e424 | 2061 | Symbol_table::do_define_in_output_data( |
2ea97941 ILT |
2062 | const char* name, |
2063 | const char* version, | |
99fff23b | 2064 | Defined defined, |
ead1e424 | 2065 | Output_data* od, |
2ea97941 ILT |
2066 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
2067 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
ead1e424 ILT |
2068 | elfcpp::STT type, |
2069 | elfcpp::STB binding, | |
2070 | elfcpp::STV visibility, | |
2071 | unsigned char nonvis, | |
2ea97941 | 2072 | bool offset_is_from_end, |
ead1e424 ILT |
2073 | bool only_if_ref) |
2074 | { | |
2075 | Sized_symbol<size>* sym; | |
86f2e683 | 2076 | Sized_symbol<size>* oldsym; |
8c500701 | 2077 | bool resolve_oldsym; |
40d7d93f | 2078 | const bool is_forced_local = binding == elfcpp::STB_LOCAL; |
ead1e424 | 2079 | |
8851ecca | 2080 | if (parameters->target().is_big_endian()) |
193a53d9 ILT |
2081 | { |
2082 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
2ea97941 | 2083 | sym = this->define_special_symbol<size, true>(&name, &version, |
dc8d2d90 L |
2084 | only_if_ref, |
2085 | visibility, | |
2086 | &oldsym, | |
40d7d93f CC |
2087 | &resolve_oldsym, |
2088 | is_forced_local); | |
193a53d9 ILT |
2089 | #else |
2090 | gold_unreachable(); | |
2091 | #endif | |
2092 | } | |
ead1e424 | 2093 | else |
193a53d9 ILT |
2094 | { |
2095 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
2ea97941 | 2096 | sym = this->define_special_symbol<size, false>(&name, &version, |
dc8d2d90 L |
2097 | only_if_ref, |
2098 | visibility, | |
2099 | &oldsym, | |
40d7d93f CC |
2100 | &resolve_oldsym, |
2101 | is_forced_local); | |
193a53d9 ILT |
2102 | #else |
2103 | gold_unreachable(); | |
2104 | #endif | |
2105 | } | |
ead1e424 ILT |
2106 | |
2107 | if (sym == NULL) | |
14b31740 | 2108 | return NULL; |
ead1e424 | 2109 | |
2ea97941 | 2110 | sym->init_output_data(name, version, od, value, symsize, type, binding, |
5146f448 CC |
2111 | visibility, nonvis, offset_is_from_end, |
2112 | defined == PREDEFINED); | |
14b31740 | 2113 | |
e5756efb | 2114 | if (oldsym == NULL) |
55a93433 | 2115 | { |
40d7d93f | 2116 | if (is_forced_local || this->version_script_.symbol_is_local(name)) |
55a93433 | 2117 | this->force_local(sym); |
2ea97941 | 2118 | else if (version != NULL) |
75517b77 | 2119 | sym->set_is_default(); |
55a93433 ILT |
2120 | return sym; |
2121 | } | |
86f2e683 | 2122 | |
62855347 | 2123 | if (Symbol_table::should_override_with_special(oldsym, type, defined)) |
e5756efb | 2124 | this->override_with_special(oldsym, sym); |
8c500701 ILT |
2125 | |
2126 | if (resolve_oldsym) | |
2127 | return sym; | |
2128 | else | |
2129 | { | |
db1ff028 | 2130 | if (defined == PREDEFINED |
40d7d93f | 2131 | && (is_forced_local || this->version_script_.symbol_is_local(name))) |
5417c94d | 2132 | this->force_local(oldsym); |
8c500701 ILT |
2133 | delete sym; |
2134 | return oldsym; | |
2135 | } | |
ead1e424 ILT |
2136 | } |
2137 | ||
2138 | // Define a symbol based on an Output_segment. | |
2139 | ||
14b31740 | 2140 | Symbol* |
2ea97941 | 2141 | Symbol_table::define_in_output_segment(const char* name, |
99fff23b ILT |
2142 | const char* version, |
2143 | Defined defined, | |
2144 | Output_segment* os, | |
2ea97941 ILT |
2145 | uint64_t value, |
2146 | uint64_t symsize, | |
9b07f471 ILT |
2147 | elfcpp::STT type, |
2148 | elfcpp::STB binding, | |
ead1e424 ILT |
2149 | elfcpp::STV visibility, |
2150 | unsigned char nonvis, | |
2ea97941 | 2151 | Symbol::Segment_offset_base offset_base, |
ead1e424 ILT |
2152 | bool only_if_ref) |
2153 | { | |
8851ecca | 2154 | if (parameters->target().get_size() == 32) |
86f2e683 ILT |
2155 | { |
2156 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
99fff23b | 2157 | return this->do_define_in_output_segment<32>(name, version, defined, os, |
2ea97941 | 2158 | value, symsize, type, |
86f2e683 | 2159 | binding, visibility, nonvis, |
2ea97941 | 2160 | offset_base, only_if_ref); |
86f2e683 ILT |
2161 | #else |
2162 | gold_unreachable(); | |
2163 | #endif | |
2164 | } | |
8851ecca | 2165 | else if (parameters->target().get_size() == 64) |
86f2e683 ILT |
2166 | { |
2167 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
99fff23b | 2168 | return this->do_define_in_output_segment<64>(name, version, defined, os, |
2ea97941 | 2169 | value, symsize, type, |
86f2e683 | 2170 | binding, visibility, nonvis, |
2ea97941 | 2171 | offset_base, only_if_ref); |
86f2e683 ILT |
2172 | #else |
2173 | gold_unreachable(); | |
2174 | #endif | |
2175 | } | |
ead1e424 | 2176 | else |
a3ad94ed | 2177 | gold_unreachable(); |
ead1e424 ILT |
2178 | } |
2179 | ||
2180 | // Define a symbol in an Output_segment, sized version. | |
2181 | ||
2182 | template<int size> | |
14b31740 | 2183 | Sized_symbol<size>* |
ead1e424 | 2184 | Symbol_table::do_define_in_output_segment( |
2ea97941 ILT |
2185 | const char* name, |
2186 | const char* version, | |
99fff23b | 2187 | Defined defined, |
ead1e424 | 2188 | Output_segment* os, |
2ea97941 ILT |
2189 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
2190 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
ead1e424 ILT |
2191 | elfcpp::STT type, |
2192 | elfcpp::STB binding, | |
2193 | elfcpp::STV visibility, | |
2194 | unsigned char nonvis, | |
2ea97941 | 2195 | Symbol::Segment_offset_base offset_base, |
ead1e424 ILT |
2196 | bool only_if_ref) |
2197 | { | |
2198 | Sized_symbol<size>* sym; | |
86f2e683 | 2199 | Sized_symbol<size>* oldsym; |
8c500701 | 2200 | bool resolve_oldsym; |
40d7d93f | 2201 | const bool is_forced_local = binding == elfcpp::STB_LOCAL; |
ead1e424 | 2202 | |
8851ecca | 2203 | if (parameters->target().is_big_endian()) |
9025d29d ILT |
2204 | { |
2205 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
2ea97941 | 2206 | sym = this->define_special_symbol<size, true>(&name, &version, |
dc8d2d90 L |
2207 | only_if_ref, |
2208 | visibility, | |
2209 | &oldsym, | |
40d7d93f CC |
2210 | &resolve_oldsym, |
2211 | is_forced_local); | |
9025d29d ILT |
2212 | #else |
2213 | gold_unreachable(); | |
2214 | #endif | |
2215 | } | |
ead1e424 | 2216 | else |
9025d29d ILT |
2217 | { |
2218 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
2ea97941 | 2219 | sym = this->define_special_symbol<size, false>(&name, &version, |
dc8d2d90 L |
2220 | only_if_ref, |
2221 | visibility, | |
2222 | &oldsym, | |
40d7d93f CC |
2223 | &resolve_oldsym, |
2224 | is_forced_local); | |
9025d29d ILT |
2225 | #else |
2226 | gold_unreachable(); | |
2227 | #endif | |
2228 | } | |
ead1e424 ILT |
2229 | |
2230 | if (sym == NULL) | |
14b31740 | 2231 | return NULL; |
ead1e424 | 2232 | |
2ea97941 | 2233 | sym->init_output_segment(name, version, os, value, symsize, type, binding, |
5146f448 CC |
2234 | visibility, nonvis, offset_base, |
2235 | defined == PREDEFINED); | |
14b31740 | 2236 | |
e5756efb | 2237 | if (oldsym == NULL) |
55a93433 | 2238 | { |
40d7d93f | 2239 | if (is_forced_local || this->version_script_.symbol_is_local(name)) |
55a93433 | 2240 | this->force_local(sym); |
2ea97941 | 2241 | else if (version != NULL) |
75517b77 | 2242 | sym->set_is_default(); |
55a93433 ILT |
2243 | return sym; |
2244 | } | |
86f2e683 | 2245 | |
62855347 | 2246 | if (Symbol_table::should_override_with_special(oldsym, type, defined)) |
e5756efb | 2247 | this->override_with_special(oldsym, sym); |
8c500701 ILT |
2248 | |
2249 | if (resolve_oldsym) | |
2250 | return sym; | |
2251 | else | |
2252 | { | |
40d7d93f | 2253 | if (is_forced_local || this->version_script_.symbol_is_local(name)) |
5417c94d | 2254 | this->force_local(oldsym); |
8c500701 ILT |
2255 | delete sym; |
2256 | return oldsym; | |
2257 | } | |
ead1e424 ILT |
2258 | } |
2259 | ||
2260 | // Define a special symbol with a constant value. It is a multiple | |
2261 | // definition error if this symbol is already defined. | |
2262 | ||
14b31740 | 2263 | Symbol* |
2ea97941 ILT |
2264 | Symbol_table::define_as_constant(const char* name, |
2265 | const char* version, | |
99fff23b | 2266 | Defined defined, |
2ea97941 ILT |
2267 | uint64_t value, |
2268 | uint64_t symsize, | |
9b07f471 ILT |
2269 | elfcpp::STT type, |
2270 | elfcpp::STB binding, | |
2271 | elfcpp::STV visibility, | |
2272 | unsigned char nonvis, | |
caa9d5d9 ILT |
2273 | bool only_if_ref, |
2274 | bool force_override) | |
ead1e424 | 2275 | { |
8851ecca | 2276 | if (parameters->target().get_size() == 32) |
86f2e683 ILT |
2277 | { |
2278 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) | |
99fff23b | 2279 | return this->do_define_as_constant<32>(name, version, defined, value, |
2ea97941 | 2280 | symsize, type, binding, |
caa9d5d9 ILT |
2281 | visibility, nonvis, only_if_ref, |
2282 | force_override); | |
86f2e683 ILT |
2283 | #else |
2284 | gold_unreachable(); | |
2285 | #endif | |
2286 | } | |
8851ecca | 2287 | else if (parameters->target().get_size() == 64) |
86f2e683 ILT |
2288 | { |
2289 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
99fff23b | 2290 | return this->do_define_as_constant<64>(name, version, defined, value, |
2ea97941 | 2291 | symsize, type, binding, |
caa9d5d9 ILT |
2292 | visibility, nonvis, only_if_ref, |
2293 | force_override); | |
86f2e683 ILT |
2294 | #else |
2295 | gold_unreachable(); | |
2296 | #endif | |
2297 | } | |
ead1e424 | 2298 | else |
a3ad94ed | 2299 | gold_unreachable(); |
ead1e424 ILT |
2300 | } |
2301 | ||
2302 | // Define a symbol as a constant, sized version. | |
2303 | ||
2304 | template<int size> | |
14b31740 | 2305 | Sized_symbol<size>* |
ead1e424 | 2306 | Symbol_table::do_define_as_constant( |
2ea97941 ILT |
2307 | const char* name, |
2308 | const char* version, | |
99fff23b | 2309 | Defined defined, |
2ea97941 ILT |
2310 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
2311 | typename elfcpp::Elf_types<size>::Elf_WXword symsize, | |
ead1e424 ILT |
2312 | elfcpp::STT type, |
2313 | elfcpp::STB binding, | |
2314 | elfcpp::STV visibility, | |
2315 | unsigned char nonvis, | |
caa9d5d9 ILT |
2316 | bool only_if_ref, |
2317 | bool force_override) | |
ead1e424 ILT |
2318 | { |
2319 | Sized_symbol<size>* sym; | |
86f2e683 | 2320 | Sized_symbol<size>* oldsym; |
8c500701 | 2321 | bool resolve_oldsym; |
40d7d93f | 2322 | const bool is_forced_local = binding == elfcpp::STB_LOCAL; |
ead1e424 | 2323 | |
8851ecca | 2324 | if (parameters->target().is_big_endian()) |
9025d29d ILT |
2325 | { |
2326 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) | |
2ea97941 | 2327 | sym = this->define_special_symbol<size, true>(&name, &version, |
dc8d2d90 L |
2328 | only_if_ref, |
2329 | visibility, | |
2330 | &oldsym, | |
40d7d93f CC |
2331 | &resolve_oldsym, |
2332 | is_forced_local); | |
9025d29d ILT |
2333 | #else |
2334 | gold_unreachable(); | |
2335 | #endif | |
2336 | } | |
ead1e424 | 2337 | else |
9025d29d ILT |
2338 | { |
2339 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) | |
2ea97941 | 2340 | sym = this->define_special_symbol<size, false>(&name, &version, |
dc8d2d90 L |
2341 | only_if_ref, |
2342 | visibility, | |
2343 | &oldsym, | |
40d7d93f CC |
2344 | &resolve_oldsym, |
2345 | is_forced_local); | |
9025d29d ILT |
2346 | #else |
2347 | gold_unreachable(); | |
2348 | #endif | |
2349 | } | |
ead1e424 ILT |
2350 | |
2351 | if (sym == NULL) | |
14b31740 | 2352 | return NULL; |
ead1e424 | 2353 | |
2ea97941 | 2354 | sym->init_constant(name, version, value, symsize, type, binding, visibility, |
5146f448 | 2355 | nonvis, defined == PREDEFINED); |
14b31740 | 2356 | |
e5756efb | 2357 | if (oldsym == NULL) |
55a93433 | 2358 | { |
686c8caf ILT |
2359 | // Version symbols are absolute symbols with name == version. |
2360 | // We don't want to force them to be local. | |
2ea97941 ILT |
2361 | if ((version == NULL |
2362 | || name != version | |
2363 | || value != 0) | |
40d7d93f | 2364 | && (is_forced_local || this->version_script_.symbol_is_local(name))) |
55a93433 | 2365 | this->force_local(sym); |
2ea97941 ILT |
2366 | else if (version != NULL |
2367 | && (name != version || value != 0)) | |
75517b77 | 2368 | sym->set_is_default(); |
55a93433 ILT |
2369 | return sym; |
2370 | } | |
86f2e683 | 2371 | |
99fff23b | 2372 | if (force_override |
62855347 | 2373 | || Symbol_table::should_override_with_special(oldsym, type, defined)) |
e5756efb | 2374 | this->override_with_special(oldsym, sym); |
8c500701 ILT |
2375 | |
2376 | if (resolve_oldsym) | |
2377 | return sym; | |
2378 | else | |
2379 | { | |
40d7d93f | 2380 | if (is_forced_local || this->version_script_.symbol_is_local(name)) |
5417c94d | 2381 | this->force_local(oldsym); |
8c500701 ILT |
2382 | delete sym; |
2383 | return oldsym; | |
2384 | } | |
ead1e424 ILT |
2385 | } |
2386 | ||
2387 | // Define a set of symbols in output sections. | |
2388 | ||
2389 | void | |
9b07f471 | 2390 | Symbol_table::define_symbols(const Layout* layout, int count, |
a445fddf ILT |
2391 | const Define_symbol_in_section* p, |
2392 | bool only_if_ref) | |
ead1e424 ILT |
2393 | { |
2394 | for (int i = 0; i < count; ++i, ++p) | |
2395 | { | |
2396 | Output_section* os = layout->find_output_section(p->output_section); | |
2397 | if (os != NULL) | |
99fff23b | 2398 | this->define_in_output_data(p->name, NULL, PREDEFINED, os, p->value, |
14b31740 ILT |
2399 | p->size, p->type, p->binding, |
2400 | p->visibility, p->nonvis, | |
a445fddf ILT |
2401 | p->offset_is_from_end, |
2402 | only_if_ref || p->only_if_ref); | |
ead1e424 | 2403 | else |
99fff23b ILT |
2404 | this->define_as_constant(p->name, NULL, PREDEFINED, 0, p->size, |
2405 | p->type, p->binding, p->visibility, p->nonvis, | |
caa9d5d9 ILT |
2406 | only_if_ref || p->only_if_ref, |
2407 | false); | |
ead1e424 ILT |
2408 | } |
2409 | } | |
2410 | ||
2411 | // Define a set of symbols in output segments. | |
2412 | ||
2413 | void | |
9b07f471 | 2414 | Symbol_table::define_symbols(const Layout* layout, int count, |
a445fddf ILT |
2415 | const Define_symbol_in_segment* p, |
2416 | bool only_if_ref) | |
ead1e424 ILT |
2417 | { |
2418 | for (int i = 0; i < count; ++i, ++p) | |
2419 | { | |
2420 | Output_segment* os = layout->find_output_segment(p->segment_type, | |
2421 | p->segment_flags_set, | |
2422 | p->segment_flags_clear); | |
2423 | if (os != NULL) | |
99fff23b | 2424 | this->define_in_output_segment(p->name, NULL, PREDEFINED, os, p->value, |
14b31740 ILT |
2425 | p->size, p->type, p->binding, |
2426 | p->visibility, p->nonvis, | |
a445fddf ILT |
2427 | p->offset_base, |
2428 | only_if_ref || p->only_if_ref); | |
ead1e424 | 2429 | else |
99fff23b ILT |
2430 | this->define_as_constant(p->name, NULL, PREDEFINED, 0, p->size, |
2431 | p->type, p->binding, p->visibility, p->nonvis, | |
caa9d5d9 ILT |
2432 | only_if_ref || p->only_if_ref, |
2433 | false); | |
ead1e424 ILT |
2434 | } |
2435 | } | |
2436 | ||
46fe1623 ILT |
2437 | // Define CSYM using a COPY reloc. POSD is the Output_data where the |
2438 | // symbol should be defined--typically a .dyn.bss section. VALUE is | |
2439 | // the offset within POSD. | |
2440 | ||
2441 | template<int size> | |
2442 | void | |
fe8718a4 | 2443 | Symbol_table::define_with_copy_reloc( |
fe8718a4 ILT |
2444 | Sized_symbol<size>* csym, |
2445 | Output_data* posd, | |
2ea97941 | 2446 | typename elfcpp::Elf_types<size>::Elf_Addr value) |
46fe1623 ILT |
2447 | { |
2448 | gold_assert(csym->is_from_dynobj()); | |
2449 | gold_assert(!csym->is_copied_from_dynobj()); | |
2ea97941 ILT |
2450 | Object* object = csym->object(); |
2451 | gold_assert(object->is_dynamic()); | |
2452 | Dynobj* dynobj = static_cast<Dynobj*>(object); | |
46fe1623 ILT |
2453 | |
2454 | // Our copied variable has to override any variable in a shared | |
2455 | // library. | |
2456 | elfcpp::STB binding = csym->binding(); | |
2457 | if (binding == elfcpp::STB_WEAK) | |
2458 | binding = elfcpp::STB_GLOBAL; | |
2459 | ||
99fff23b | 2460 | this->define_in_output_data(csym->name(), csym->version(), COPY, |
2ea97941 | 2461 | posd, value, csym->symsize(), |
46fe1623 ILT |
2462 | csym->type(), binding, |
2463 | csym->visibility(), csym->nonvis(), | |
2464 | false, false); | |
2465 | ||
2466 | csym->set_is_copied_from_dynobj(); | |
2467 | csym->set_needs_dynsym_entry(); | |
2468 | ||
2469 | this->copied_symbol_dynobjs_[csym] = dynobj; | |
2470 | ||
2471 | // We have now defined all aliases, but we have not entered them all | |
2472 | // in the copied_symbol_dynobjs_ map. | |
2473 | if (csym->has_alias()) | |
2474 | { | |
2475 | Symbol* sym = csym; | |
2476 | while (true) | |
2477 | { | |
2478 | sym = this->weak_aliases_[sym]; | |
2479 | if (sym == csym) | |
2480 | break; | |
2481 | gold_assert(sym->output_data() == posd); | |
2482 | ||
2483 | sym->set_is_copied_from_dynobj(); | |
2484 | this->copied_symbol_dynobjs_[sym] = dynobj; | |
2485 | } | |
2486 | } | |
2487 | } | |
2488 | ||
2489 | // SYM is defined using a COPY reloc. Return the dynamic object where | |
2490 | // the original definition was found. | |
2491 | ||
2492 | Dynobj* | |
2493 | Symbol_table::get_copy_source(const Symbol* sym) const | |
2494 | { | |
2495 | gold_assert(sym->is_copied_from_dynobj()); | |
2496 | Copied_symbol_dynobjs::const_iterator p = | |
2497 | this->copied_symbol_dynobjs_.find(sym); | |
2498 | gold_assert(p != this->copied_symbol_dynobjs_.end()); | |
2499 | return p->second; | |
2500 | } | |
2501 | ||
f3e9c5c5 ILT |
2502 | // Add any undefined symbols named on the command line. |
2503 | ||
2504 | void | |
88a4108b | 2505 | Symbol_table::add_undefined_symbols_from_command_line(Layout* layout) |
f3e9c5c5 | 2506 | { |
88a4108b ILT |
2507 | if (parameters->options().any_undefined() |
2508 | || layout->script_options()->any_unreferenced()) | |
f3e9c5c5 ILT |
2509 | { |
2510 | if (parameters->target().get_size() == 32) | |
2511 | { | |
5adf9721 | 2512 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
88a4108b | 2513 | this->do_add_undefined_symbols_from_command_line<32>(layout); |
f3e9c5c5 ILT |
2514 | #else |
2515 | gold_unreachable(); | |
2516 | #endif | |
2517 | } | |
2518 | else if (parameters->target().get_size() == 64) | |
2519 | { | |
2520 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
88a4108b | 2521 | this->do_add_undefined_symbols_from_command_line<64>(layout); |
f3e9c5c5 ILT |
2522 | #else |
2523 | gold_unreachable(); | |
2524 | #endif | |
2525 | } | |
2526 | else | |
2527 | gold_unreachable(); | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | template<int size> | |
2532 | void | |
88a4108b | 2533 | Symbol_table::do_add_undefined_symbols_from_command_line(Layout* layout) |
f3e9c5c5 ILT |
2534 | { |
2535 | for (options::String_set::const_iterator p = | |
2536 | parameters->options().undefined_begin(); | |
2537 | p != parameters->options().undefined_end(); | |
2538 | ++p) | |
88a4108b | 2539 | this->add_undefined_symbol_from_command_line<size>(p->c_str()); |
f3e9c5c5 | 2540 | |
88a4108b ILT |
2541 | for (Script_options::referenced_const_iterator p = |
2542 | layout->script_options()->referenced_begin(); | |
2543 | p != layout->script_options()->referenced_end(); | |
2544 | ++p) | |
2545 | this->add_undefined_symbol_from_command_line<size>(p->c_str()); | |
2546 | } | |
2547 | ||
2548 | template<int size> | |
2549 | void | |
2550 | Symbol_table::add_undefined_symbol_from_command_line(const char* name) | |
2551 | { | |
2552 | if (this->lookup(name) != NULL) | |
2553 | return; | |
f3e9c5c5 | 2554 | |
88a4108b | 2555 | const char* version = NULL; |
f3e9c5c5 | 2556 | |
88a4108b ILT |
2557 | Sized_symbol<size>* sym; |
2558 | Sized_symbol<size>* oldsym; | |
2559 | bool resolve_oldsym; | |
2560 | if (parameters->target().is_big_endian()) | |
2561 | { | |
f3e9c5c5 | 2562 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG) |
88a4108b | 2563 | sym = this->define_special_symbol<size, true>(&name, &version, |
dc8d2d90 L |
2564 | false, |
2565 | elfcpp::STV_DEFAULT, | |
2566 | &oldsym, | |
40d7d93f CC |
2567 | &resolve_oldsym, |
2568 | false); | |
f3e9c5c5 | 2569 | #else |
88a4108b | 2570 | gold_unreachable(); |
f3e9c5c5 | 2571 | #endif |
88a4108b ILT |
2572 | } |
2573 | else | |
2574 | { | |
f3e9c5c5 | 2575 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE) |
88a4108b | 2576 | sym = this->define_special_symbol<size, false>(&name, &version, |
dc8d2d90 L |
2577 | false, |
2578 | elfcpp::STV_DEFAULT, | |
2579 | &oldsym, | |
40d7d93f CC |
2580 | &resolve_oldsym, |
2581 | false); | |
f3e9c5c5 | 2582 | #else |
88a4108b | 2583 | gold_unreachable(); |
f3e9c5c5 | 2584 | #endif |
88a4108b | 2585 | } |
f3e9c5c5 | 2586 | |
88a4108b | 2587 | gold_assert(oldsym == NULL); |
f3e9c5c5 | 2588 | |
dc1c8a16 | 2589 | sym->init_undefined(name, version, 0, elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, |
88a4108b ILT |
2590 | elfcpp::STV_DEFAULT, 0); |
2591 | ++this->saw_undefined_; | |
f3e9c5c5 ILT |
2592 | } |
2593 | ||
a3ad94ed | 2594 | // Set the dynamic symbol indexes. INDEX is the index of the first |
c4d5a762 CC |
2595 | // global dynamic symbol. Pointers to the global symbols are stored |
2596 | // into the vector SYMS. The names are added to DYNPOOL. | |
2597 | // This returns an updated dynamic symbol index. | |
a3ad94ed ILT |
2598 | |
2599 | unsigned int | |
9b07f471 | 2600 | Symbol_table::set_dynsym_indexes(unsigned int index, |
c4d5a762 | 2601 | unsigned int* pforced_local_count, |
a3ad94ed | 2602 | std::vector<Symbol*>* syms, |
14b31740 ILT |
2603 | Stringpool* dynpool, |
2604 | Versions* versions) | |
a3ad94ed | 2605 | { |
c4d5a762 CC |
2606 | // First process all the symbols which have been forced to be local, |
2607 | // as they must appear before all global symbols. | |
2608 | unsigned int forced_local_count = 0; | |
2609 | for (Forced_locals::iterator p = this->forced_locals_.begin(); | |
2610 | p != this->forced_locals_.end(); | |
2611 | ++p) | |
2612 | { | |
2613 | Symbol* sym = *p; | |
2614 | gold_assert(sym->is_forced_local()); | |
2615 | if (sym->has_dynsym_index()) | |
2616 | continue; | |
2617 | if (!sym->should_add_dynsym_entry(this)) | |
2618 | sym->set_dynsym_index(-1U); | |
2619 | else | |
2620 | { | |
2621 | sym->set_dynsym_index(index); | |
2622 | ++index; | |
2623 | ++forced_local_count; | |
2624 | dynpool->add(sym->name(), false, NULL); | |
aa465b19 AM |
2625 | if (sym->type() == elfcpp::STT_GNU_IFUNC) |
2626 | this->set_has_gnu_output(); | |
c4d5a762 CC |
2627 | } |
2628 | } | |
2629 | *pforced_local_count = forced_local_count; | |
2630 | ||
98ff9231 CC |
2631 | // Allow a target to set dynsym indexes. |
2632 | if (parameters->target().has_custom_set_dynsym_indexes()) | |
2633 | { | |
2634 | std::vector<Symbol*> dyn_symbols; | |
2635 | for (Symbol_table_type::iterator p = this->table_.begin(); | |
2636 | p != this->table_.end(); | |
2637 | ++p) | |
2638 | { | |
2639 | Symbol* sym = p->second; | |
c4d5a762 CC |
2640 | if (sym->is_forced_local()) |
2641 | continue; | |
98ff9231 CC |
2642 | if (!sym->should_add_dynsym_entry(this)) |
2643 | sym->set_dynsym_index(-1U); | |
2644 | else | |
aa465b19 AM |
2645 | { |
2646 | dyn_symbols.push_back(sym); | |
2647 | if (sym->type() == elfcpp::STT_GNU_IFUNC | |
2648 | || (sym->binding() == elfcpp::STB_GNU_UNIQUE | |
2649 | && parameters->options().gnu_unique())) | |
2650 | this->set_has_gnu_output(); | |
2651 | } | |
98ff9231 CC |
2652 | } |
2653 | ||
2654 | return parameters->target().set_dynsym_indexes(&dyn_symbols, index, syms, | |
2655 | dynpool, versions, this); | |
2656 | } | |
2657 | ||
a3ad94ed ILT |
2658 | for (Symbol_table_type::iterator p = this->table_.begin(); |
2659 | p != this->table_.end(); | |
2660 | ++p) | |
2661 | { | |
2662 | Symbol* sym = p->second; | |
16649710 | 2663 | |
c4d5a762 CC |
2664 | if (sym->is_forced_local()) |
2665 | continue; | |
2666 | ||
16649710 ILT |
2667 | // Note that SYM may already have a dynamic symbol index, since |
2668 | // some symbols appear more than once in the symbol table, with | |
2669 | // and without a version. | |
2670 | ||
ce97fa81 | 2671 | if (!sym->should_add_dynsym_entry(this)) |
16649710 ILT |
2672 | sym->set_dynsym_index(-1U); |
2673 | else if (!sym->has_dynsym_index()) | |
a3ad94ed ILT |
2674 | { |
2675 | sym->set_dynsym_index(index); | |
2676 | ++index; | |
2677 | syms->push_back(sym); | |
cfd73a4e | 2678 | dynpool->add(sym->name(), false, NULL); |
aa465b19 AM |
2679 | if (sym->type() == elfcpp::STT_GNU_IFUNC |
2680 | || (sym->binding() == elfcpp::STB_GNU_UNIQUE | |
2681 | && parameters->options().gnu_unique())) | |
2682 | this->set_has_gnu_output(); | |
14b31740 | 2683 | |
32e2b61d AM |
2684 | // Record any version information, except those from |
2685 | // as-needed libraries not seen to be needed. Note that the | |
2686 | // is_needed state for such libraries can change in this loop. | |
2687 | if (sym->version() != NULL) | |
2688 | { | |
2689 | if (!sym->is_from_dynobj() | |
2690 | || !sym->object()->as_needed() | |
2691 | || sym->object()->is_needed()) | |
2692 | versions->record_version(this, dynpool, sym); | |
2693 | else | |
cea6ffbd | 2694 | { |
3a12c78d CC |
2695 | if (parameters->options().warn_drop_version()) |
2696 | gold_warning(_("discarding version information for " | |
2697 | "%s@%s, defined in unused shared library %s " | |
2698 | "(linked with --as-needed)"), | |
2699 | sym->name(), sym->version(), | |
2700 | sym->object()->name().c_str()); | |
cea6ffbd CC |
2701 | sym->clear_version(); |
2702 | } | |
32e2b61d | 2703 | } |
a3ad94ed ILT |
2704 | } |
2705 | } | |
2706 | ||
14b31740 ILT |
2707 | // Finish up the versions. In some cases this may add new dynamic |
2708 | // symbols. | |
9b07f471 | 2709 | index = versions->finalize(this, index, syms); |
14b31740 | 2710 | |
dc1c8a16 CC |
2711 | // Process target-specific symbols. |
2712 | for (std::vector<Symbol*>::iterator p = this->target_symbols_.begin(); | |
2713 | p != this->target_symbols_.end(); | |
2714 | ++p) | |
2715 | { | |
2716 | (*p)->set_dynsym_index(index); | |
2717 | ++index; | |
2718 | syms->push_back(*p); | |
2719 | dynpool->add((*p)->name(), false, NULL); | |
2720 | } | |
2721 | ||
a3ad94ed ILT |
2722 | return index; |
2723 | } | |
2724 | ||
c06b7b0b | 2725 | // Set the final values for all the symbols. The index of the first |
55a93433 ILT |
2726 | // global symbol in the output file is *PLOCAL_SYMCOUNT. Record the |
2727 | // file offset OFF. Add their names to POOL. Return the new file | |
c4d5a762 CC |
2728 | // offset. Update *PLOCAL_SYMCOUNT if necessary. DYNOFF and |
2729 | // DYN_GLOBAL_INDEX refer to the start of the symbols that will be | |
2730 | // written from the global symbol table in Symtab::write_globals(), | |
2731 | // which will include forced-local symbols. DYN_GLOBAL_INDEX is | |
2732 | // not necessarily the same as the sh_info field for the .dynsym | |
2733 | // section, which will point to the first real global symbol. | |
54dc6425 | 2734 | |
75f65a3e | 2735 | off_t |
55a93433 ILT |
2736 | Symbol_table::finalize(off_t off, off_t dynoff, size_t dyn_global_index, |
2737 | size_t dyncount, Stringpool* pool, | |
ca09d69a | 2738 | unsigned int* plocal_symcount) |
54dc6425 | 2739 | { |
f6ce93d6 ILT |
2740 | off_t ret; |
2741 | ||
55a93433 ILT |
2742 | gold_assert(*plocal_symcount != 0); |
2743 | this->first_global_index_ = *plocal_symcount; | |
c06b7b0b | 2744 | |
16649710 ILT |
2745 | this->dynamic_offset_ = dynoff; |
2746 | this->first_dynamic_global_index_ = dyn_global_index; | |
2747 | this->dynamic_count_ = dyncount; | |
2748 | ||
8851ecca | 2749 | if (parameters->target().get_size() == 32) |
9025d29d ILT |
2750 | { |
2751 | #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE) | |
55a93433 | 2752 | ret = this->sized_finalize<32>(off, pool, plocal_symcount); |
9025d29d ILT |
2753 | #else |
2754 | gold_unreachable(); | |
2755 | #endif | |
2756 | } | |
8851ecca | 2757 | else if (parameters->target().get_size() == 64) |
9025d29d ILT |
2758 | { |
2759 | #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE) | |
55a93433 | 2760 | ret = this->sized_finalize<64>(off, pool, plocal_symcount); |
9025d29d ILT |
2761 | #else |
2762 | gold_unreachable(); | |
2763 | #endif | |
2764 | } | |
61ba1cf9 | 2765 | else |
a3ad94ed | 2766 | gold_unreachable(); |
f6ce93d6 | 2767 | |
aa465b19 AM |
2768 | if (this->has_gnu_output_) |
2769 | { | |
2770 | Target* target = const_cast<Target*>(¶meters->target()); | |
2771 | if (target->osabi() == elfcpp::ELFOSABI_NONE) | |
2772 | target->set_osabi(elfcpp::ELFOSABI_GNU); | |
2773 | } | |
2774 | ||
f6ce93d6 ILT |
2775 | // Now that we have the final symbol table, we can reliably note |
2776 | // which symbols should get warnings. | |
cb295612 | 2777 | this->warnings_.note_warnings(this); |
f6ce93d6 ILT |
2778 | |
2779 | return ret; | |
75f65a3e ILT |
2780 | } |
2781 | ||
55a93433 ILT |
2782 | // SYM is going into the symbol table at *PINDEX. Add the name to |
2783 | // POOL, update *PINDEX and *POFF. | |
2784 | ||
2785 | template<int size> | |
2786 | void | |
2787 | Symbol_table::add_to_final_symtab(Symbol* sym, Stringpool* pool, | |
2788 | unsigned int* pindex, off_t* poff) | |
2789 | { | |
2790 | sym->set_symtab_index(*pindex); | |
6d1c4efb ILT |
2791 | if (sym->version() == NULL || !parameters->options().relocatable()) |
2792 | pool->add(sym->name(), false, NULL); | |
2793 | else | |
2794 | pool->add(sym->versioned_name(), true, NULL); | |
55a93433 ILT |
2795 | ++*pindex; |
2796 | *poff += elfcpp::Elf_sizes<size>::sym_size; | |
2797 | } | |
2798 | ||
ead1e424 ILT |
2799 | // Set the final value for all the symbols. This is called after |
2800 | // Layout::finalize, so all the output sections have their final | |
2801 | // address. | |
75f65a3e ILT |
2802 | |
2803 | template<int size> | |
2804 | off_t | |
55a93433 ILT |
2805 | Symbol_table::sized_finalize(off_t off, Stringpool* pool, |
2806 | unsigned int* plocal_symcount) | |
75f65a3e | 2807 | { |
ead1e424 | 2808 | off = align_address(off, size >> 3); |
75f65a3e ILT |
2809 | this->offset_ = off; |
2810 | ||
55a93433 ILT |
2811 | unsigned int index = *plocal_symcount; |
2812 | const unsigned int orig_index = index; | |
c06b7b0b | 2813 | |
55a93433 ILT |
2814 | // First do all the symbols which have been forced to be local, as |
2815 | // they must appear before all global symbols. | |
2816 | for (Forced_locals::iterator p = this->forced_locals_.begin(); | |
2817 | p != this->forced_locals_.end(); | |
2818 | ++p) | |
2819 | { | |
2820 | Symbol* sym = *p; | |
2821 | gold_assert(sym->is_forced_local()); | |
2822 | if (this->sized_finalize_symbol<size>(sym)) | |
2823 | { | |
2824 | this->add_to_final_symtab<size>(sym, pool, &index, &off); | |
2825 | ++*plocal_symcount; | |
aa465b19 AM |
2826 | if (sym->type() == elfcpp::STT_GNU_IFUNC) |
2827 | this->set_has_gnu_output(); | |
55a93433 ILT |
2828 | } |
2829 | } | |
2830 | ||
2831 | // Now do all the remaining symbols. | |
c06b7b0b ILT |
2832 | for (Symbol_table_type::iterator p = this->table_.begin(); |
2833 | p != this->table_.end(); | |
2834 | ++p) | |
54dc6425 | 2835 | { |
55a93433 ILT |
2836 | Symbol* sym = p->second; |
2837 | if (this->sized_finalize_symbol<size>(sym)) | |
aa465b19 AM |
2838 | { |
2839 | this->add_to_final_symtab<size>(sym, pool, &index, &off); | |
2840 | if (sym->type() == elfcpp::STT_GNU_IFUNC | |
2841 | || (sym->binding() == elfcpp::STB_GNU_UNIQUE | |
2842 | && parameters->options().gnu_unique())) | |
2843 | this->set_has_gnu_output(); | |
2844 | } | |
55a93433 | 2845 | } |
54dc6425 | 2846 | |
dc1c8a16 CC |
2847 | // Now do target-specific symbols. |
2848 | for (std::vector<Symbol*>::iterator p = this->target_symbols_.begin(); | |
2849 | p != this->target_symbols_.end(); | |
2850 | ++p) | |
2851 | { | |
2852 | this->add_to_final_symtab<size>(*p, pool, &index, &off); | |
2853 | } | |
2854 | ||
55a93433 | 2855 | this->output_count_ = index - orig_index; |
a3ad94ed | 2856 | |
55a93433 ILT |
2857 | return off; |
2858 | } | |
75f65a3e | 2859 | |
c0a62865 DK |
2860 | // Compute the final value of SYM and store status in location PSTATUS. |
2861 | // During relaxation, this may be called multiple times for a symbol to | |
2862 | // compute its would-be final value in each relaxation pass. | |
008db82e | 2863 | |
55a93433 | 2864 | template<int size> |
c0a62865 DK |
2865 | typename Sized_symbol<size>::Value_type |
2866 | Symbol_table::compute_final_value( | |
2867 | const Sized_symbol<size>* sym, | |
2868 | Compute_final_value_status* pstatus) const | |
55a93433 | 2869 | { |
ef9beddf | 2870 | typedef typename Sized_symbol<size>::Value_type Value_type; |
2ea97941 | 2871 | Value_type value; |
ead1e424 | 2872 | |
55a93433 ILT |
2873 | switch (sym->source()) |
2874 | { | |
2875 | case Symbol::FROM_OBJECT: | |
2876 | { | |
d491d34e | 2877 | bool is_ordinary; |
2ea97941 | 2878 | unsigned int shndx = sym->shndx(&is_ordinary); |
ead1e424 | 2879 | |
d491d34e | 2880 | if (!is_ordinary |
2ea97941 ILT |
2881 | && shndx != elfcpp::SHN_ABS |
2882 | && !Symbol::is_common_shndx(shndx)) | |
55a93433 | 2883 | { |
c0a62865 DK |
2884 | *pstatus = CFVS_UNSUPPORTED_SYMBOL_SECTION; |
2885 | return 0; | |
ead1e424 | 2886 | } |
ead1e424 | 2887 | |
55a93433 ILT |
2888 | Object* symobj = sym->object(); |
2889 | if (symobj->is_dynamic()) | |
ead1e424 | 2890 | { |
2ea97941 ILT |
2891 | value = 0; |
2892 | shndx = elfcpp::SHN_UNDEF; | |
ead1e424 | 2893 | } |
89fc3421 CC |
2894 | else if (symobj->pluginobj() != NULL) |
2895 | { | |
2ea97941 ILT |
2896 | value = 0; |
2897 | shndx = elfcpp::SHN_UNDEF; | |
89fc3421 | 2898 | } |
2ea97941 ILT |
2899 | else if (shndx == elfcpp::SHN_UNDEF) |
2900 | value = 0; | |
d491d34e | 2901 | else if (!is_ordinary |
2ea97941 ILT |
2902 | && (shndx == elfcpp::SHN_ABS |
2903 | || Symbol::is_common_shndx(shndx))) | |
2904 | value = sym->value(); | |
55a93433 | 2905 | else |
ead1e424 | 2906 | { |
55a93433 | 2907 | Relobj* relobj = static_cast<Relobj*>(symobj); |
2ea97941 | 2908 | Output_section* os = relobj->output_section(shndx); |
55a93433 | 2909 | |
2ea97941 | 2910 | if (this->is_section_folded(relobj, shndx)) |
ef15dade ST |
2911 | { |
2912 | gold_assert(os == NULL); | |
2913 | // Get the os of the section it is folded onto. | |
2914 | Section_id folded = this->icf_->get_folded_section(relobj, | |
2ea97941 | 2915 | shndx); |
ef15dade ST |
2916 | gold_assert(folded.first != NULL); |
2917 | Relobj* folded_obj = reinterpret_cast<Relobj*>(folded.first); | |
d6344fb5 DK |
2918 | unsigned folded_shndx = folded.second; |
2919 | ||
2920 | os = folded_obj->output_section(folded_shndx); | |
ef15dade | 2921 | gold_assert(os != NULL); |
d6344fb5 DK |
2922 | |
2923 | // Replace (relobj, shndx) with canonical ICF input section. | |
2924 | shndx = folded_shndx; | |
2925 | relobj = folded_obj; | |
ef15dade ST |
2926 | } |
2927 | ||
d6344fb5 | 2928 | uint64_t secoff64 = relobj->output_section_offset(shndx); |
ef15dade | 2929 | if (os == NULL) |
ead1e424 | 2930 | { |
6d03d481 ST |
2931 | bool static_or_reloc = (parameters->doing_static_link() || |
2932 | parameters->options().relocatable()); | |
2933 | gold_assert(static_or_reloc || sym->dynsym_index() == -1U); | |
2934 | ||
c0a62865 DK |
2935 | *pstatus = CFVS_NO_OUTPUT_SECTION; |
2936 | return 0; | |
ead1e424 | 2937 | } |
55a93433 | 2938 | |
eff45813 CC |
2939 | if (secoff64 == -1ULL) |
2940 | { | |
2941 | // The section needs special handling (e.g., a merge section). | |
ef15dade | 2942 | |
2ea97941 | 2943 | value = os->output_address(relobj, shndx, sym->value()); |
eff45813 CC |
2944 | } |
2945 | else | |
2946 | { | |
2947 | Value_type secoff = | |
2948 | convert_types<Value_type, uint64_t>(secoff64); | |
2949 | if (sym->type() == elfcpp::STT_TLS) | |
2ea97941 | 2950 | value = sym->value() + os->tls_offset() + secoff; |
eff45813 | 2951 | else |
2ea97941 | 2952 | value = sym->value() + os->address() + secoff; |
eff45813 | 2953 | } |
ead1e424 | 2954 | } |
55a93433 ILT |
2955 | } |
2956 | break; | |
2957 | ||
2958 | case Symbol::IN_OUTPUT_DATA: | |
2959 | { | |
2960 | Output_data* od = sym->output_data(); | |
2ea97941 | 2961 | value = sym->value(); |
155a0dd7 | 2962 | if (sym->type() != elfcpp::STT_TLS) |
2ea97941 | 2963 | value += od->address(); |
155a0dd7 ILT |
2964 | else |
2965 | { | |
2966 | Output_section* os = od->output_section(); | |
2967 | gold_assert(os != NULL); | |
2ea97941 | 2968 | value += os->tls_offset() + (od->address() - os->address()); |
155a0dd7 | 2969 | } |
55a93433 | 2970 | if (sym->offset_is_from_end()) |
2ea97941 | 2971 | value += od->data_size(); |
55a93433 ILT |
2972 | } |
2973 | break; | |
2974 | ||
2975 | case Symbol::IN_OUTPUT_SEGMENT: | |
2976 | { | |
2977 | Output_segment* os = sym->output_segment(); | |
2ea97941 | 2978 | value = sym->value(); |
edfbb029 | 2979 | if (sym->type() != elfcpp::STT_TLS) |
2ea97941 | 2980 | value += os->vaddr(); |
55a93433 ILT |
2981 | switch (sym->offset_base()) |
2982 | { | |
2983 | case Symbol::SEGMENT_START: | |
2984 | break; | |
2985 | case Symbol::SEGMENT_END: | |
2ea97941 | 2986 | value += os->memsz(); |
55a93433 ILT |
2987 | break; |
2988 | case Symbol::SEGMENT_BSS: | |
2ea97941 | 2989 | value += os->filesz(); |
55a93433 ILT |
2990 | break; |
2991 | default: | |
2992 | gold_unreachable(); | |
2993 | } | |
2994 | } | |
2995 | break; | |
ead1e424 | 2996 | |
f3e9c5c5 | 2997 | case Symbol::IS_CONSTANT: |
2ea97941 | 2998 | value = sym->value(); |
55a93433 | 2999 | break; |
ead1e424 | 3000 | |
f3e9c5c5 | 3001 | case Symbol::IS_UNDEFINED: |
2ea97941 | 3002 | value = 0; |
f3e9c5c5 ILT |
3003 | break; |
3004 | ||
55a93433 ILT |
3005 | default: |
3006 | gold_unreachable(); | |
3007 | } | |
ead1e424 | 3008 | |
c0a62865 | 3009 | *pstatus = CFVS_OK; |
2ea97941 | 3010 | return value; |
c0a62865 DK |
3011 | } |
3012 | ||
3013 | // Finalize the symbol SYM. This returns true if the symbol should be | |
3014 | // added to the symbol table, false otherwise. | |
3015 | ||
3016 | template<int size> | |
3017 | bool | |
3018 | Symbol_table::sized_finalize_symbol(Symbol* unsized_sym) | |
3019 | { | |
3020 | typedef typename Sized_symbol<size>::Value_type Value_type; | |
3021 | ||
3022 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(unsized_sym); | |
3023 | ||
3024 | // The default version of a symbol may appear twice in the symbol | |
3025 | // table. We only need to finalize it once. | |
3026 | if (sym->has_symtab_index()) | |
3027 | return false; | |
3028 | ||
3029 | if (!sym->in_reg()) | |
3030 | { | |
3031 | gold_assert(!sym->has_symtab_index()); | |
3032 | sym->set_symtab_index(-1U); | |
3033 | gold_assert(sym->dynsym_index() == -1U); | |
3034 | return false; | |
3035 | } | |
3036 | ||
badc8139 RÁE |
3037 | // If the symbol is only present on plugin files, the plugin decided we |
3038 | // don't need it. | |
3039 | if (!sym->in_real_elf()) | |
3040 | { | |
3041 | gold_assert(!sym->has_symtab_index()); | |
3042 | sym->set_symtab_index(-1U); | |
3043 | return false; | |
3044 | } | |
3045 | ||
c0a62865 DK |
3046 | // Compute final symbol value. |
3047 | Compute_final_value_status status; | |
2ea97941 | 3048 | Value_type value = this->compute_final_value(sym, &status); |
c0a62865 DK |
3049 | |
3050 | switch (status) | |
3051 | { | |
3052 | case CFVS_OK: | |
3053 | break; | |
3054 | case CFVS_UNSUPPORTED_SYMBOL_SECTION: | |
3055 | { | |
3056 | bool is_ordinary; | |
2ea97941 | 3057 | unsigned int shndx = sym->shndx(&is_ordinary); |
c0a62865 | 3058 | gold_error(_("%s: unsupported symbol section 0x%x"), |
2ea97941 | 3059 | sym->demangled_name().c_str(), shndx); |
c0a62865 DK |
3060 | } |
3061 | break; | |
3062 | case CFVS_NO_OUTPUT_SECTION: | |
3063 | sym->set_symtab_index(-1U); | |
3064 | return false; | |
3065 | default: | |
3066 | gold_unreachable(); | |
3067 | } | |
3068 | ||
2ea97941 | 3069 | sym->set_value(value); |
9e2dcb77 | 3070 | |
8c604651 CS |
3071 | if (parameters->options().strip_all() |
3072 | || !parameters->options().should_retain_symbol(sym->name())) | |
55a93433 ILT |
3073 | { |
3074 | sym->set_symtab_index(-1U); | |
3075 | return false; | |
54dc6425 | 3076 | } |
75f65a3e | 3077 | |
55a93433 | 3078 | return true; |
54dc6425 ILT |
3079 | } |
3080 | ||
61ba1cf9 ILT |
3081 | // Write out the global symbols. |
3082 | ||
3083 | void | |
fd9d194f | 3084 | Symbol_table::write_globals(const Stringpool* sympool, |
d491d34e ILT |
3085 | const Stringpool* dynpool, |
3086 | Output_symtab_xindex* symtab_xindex, | |
3087 | Output_symtab_xindex* dynsym_xindex, | |
3088 | Output_file* of) const | |
61ba1cf9 | 3089 | { |
8851ecca | 3090 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 3091 | { |
9025d29d | 3092 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca | 3093 | case Parameters::TARGET_32_LITTLE: |
fd9d194f | 3094 | this->sized_write_globals<32, false>(sympool, dynpool, symtab_xindex, |
d491d34e | 3095 | dynsym_xindex, of); |
8851ecca | 3096 | break; |
9025d29d | 3097 | #endif |
8851ecca ILT |
3098 | #ifdef HAVE_TARGET_32_BIG |
3099 | case Parameters::TARGET_32_BIG: | |
fd9d194f | 3100 | this->sized_write_globals<32, true>(sympool, dynpool, symtab_xindex, |
d491d34e | 3101 | dynsym_xindex, of); |
8851ecca | 3102 | break; |
9025d29d | 3103 | #endif |
9025d29d | 3104 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca | 3105 | case Parameters::TARGET_64_LITTLE: |
fd9d194f | 3106 | this->sized_write_globals<64, false>(sympool, dynpool, symtab_xindex, |
d491d34e | 3107 | dynsym_xindex, of); |
8851ecca | 3108 | break; |
9025d29d | 3109 | #endif |
8851ecca ILT |
3110 | #ifdef HAVE_TARGET_64_BIG |
3111 | case Parameters::TARGET_64_BIG: | |
fd9d194f | 3112 | this->sized_write_globals<64, true>(sympool, dynpool, symtab_xindex, |
d491d34e | 3113 | dynsym_xindex, of); |
8851ecca ILT |
3114 | break; |
3115 | #endif | |
3116 | default: | |
3117 | gold_unreachable(); | |
61ba1cf9 | 3118 | } |
61ba1cf9 ILT |
3119 | } |
3120 | ||
3121 | // Write out the global symbols. | |
3122 | ||
3123 | template<int size, bool big_endian> | |
3124 | void | |
fd9d194f | 3125 | Symbol_table::sized_write_globals(const Stringpool* sympool, |
16649710 | 3126 | const Stringpool* dynpool, |
d491d34e ILT |
3127 | Output_symtab_xindex* symtab_xindex, |
3128 | Output_symtab_xindex* dynsym_xindex, | |
61ba1cf9 ILT |
3129 | Output_file* of) const |
3130 | { | |
8851ecca | 3131 | const Target& target = parameters->target(); |
9a2d6984 | 3132 | |
61ba1cf9 | 3133 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
55a93433 ILT |
3134 | |
3135 | const unsigned int output_count = this->output_count_; | |
3136 | const section_size_type oview_size = output_count * sym_size; | |
3137 | const unsigned int first_global_index = this->first_global_index_; | |
5fe2a0f5 ILT |
3138 | unsigned char* psyms; |
3139 | if (this->offset_ == 0 || output_count == 0) | |
3140 | psyms = NULL; | |
3141 | else | |
3142 | psyms = of->get_output_view(this->offset_, oview_size); | |
16649710 | 3143 | |
55a93433 ILT |
3144 | const unsigned int dynamic_count = this->dynamic_count_; |
3145 | const section_size_type dynamic_size = dynamic_count * sym_size; | |
3146 | const unsigned int first_dynamic_global_index = | |
3147 | this->first_dynamic_global_index_; | |
16649710 | 3148 | unsigned char* dynamic_view; |
5fe2a0f5 | 3149 | if (this->dynamic_offset_ == 0 || dynamic_count == 0) |
16649710 ILT |
3150 | dynamic_view = NULL; |
3151 | else | |
3152 | dynamic_view = of->get_output_view(this->dynamic_offset_, dynamic_size); | |
c06b7b0b | 3153 | |
61ba1cf9 ILT |
3154 | for (Symbol_table_type::const_iterator p = this->table_.begin(); |
3155 | p != this->table_.end(); | |
3156 | ++p) | |
3157 | { | |
3158 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); | |
3159 | ||
9a2d6984 | 3160 | // Possibly warn about unresolved symbols in shared libraries. |
fd9d194f | 3161 | this->warn_about_undefined_dynobj_symbol(sym); |
e2827e5f | 3162 | |
a3ad94ed | 3163 | unsigned int sym_index = sym->symtab_index(); |
16649710 ILT |
3164 | unsigned int dynsym_index; |
3165 | if (dynamic_view == NULL) | |
3166 | dynsym_index = -1U; | |
3167 | else | |
3168 | dynsym_index = sym->dynsym_index(); | |
3169 | ||
3170 | if (sym_index == -1U && dynsym_index == -1U) | |
a3ad94ed ILT |
3171 | { |
3172 | // This symbol is not included in the output file. | |
3173 | continue; | |
3174 | } | |
16649710 | 3175 | |
2ea97941 | 3176 | unsigned int shndx; |
88dd47ac ILT |
3177 | typename elfcpp::Elf_types<size>::Elf_Addr sym_value = sym->value(); |
3178 | typename elfcpp::Elf_types<size>::Elf_Addr dynsym_value = sym_value; | |
ce279a62 | 3179 | elfcpp::STB binding = sym->binding(); |
9634ed06 | 3180 | |
a100d66f ST |
3181 | // If --weak-unresolved-symbols is set, change binding of unresolved |
3182 | // global symbols to STB_WEAK. | |
3183 | if (parameters->options().weak_unresolved_symbols() | |
3184 | && binding == elfcpp::STB_GLOBAL | |
3185 | && sym->is_undefined()) | |
3186 | binding = elfcpp::STB_WEAK; | |
3187 | ||
9634ed06 CC |
3188 | // If --no-gnu-unique is set, change STB_GNU_UNIQUE to STB_GLOBAL. |
3189 | if (binding == elfcpp::STB_GNU_UNIQUE | |
3190 | && !parameters->options().gnu_unique()) | |
3191 | binding = elfcpp::STB_GLOBAL; | |
3192 | ||
ead1e424 ILT |
3193 | switch (sym->source()) |
3194 | { | |
3195 | case Symbol::FROM_OBJECT: | |
3196 | { | |
d491d34e ILT |
3197 | bool is_ordinary; |
3198 | unsigned int in_shndx = sym->shndx(&is_ordinary); | |
ead1e424 | 3199 | |
d491d34e | 3200 | if (!is_ordinary |
0dfbdef4 | 3201 | && in_shndx != elfcpp::SHN_ABS |
8a5e3e08 | 3202 | && !Symbol::is_common_shndx(in_shndx)) |
ead1e424 | 3203 | { |
75f2446e | 3204 | gold_error(_("%s: unsupported symbol section 0x%x"), |
a2b1aa12 | 3205 | sym->demangled_name().c_str(), in_shndx); |
2ea97941 | 3206 | shndx = in_shndx; |
f6ce93d6 | 3207 | } |
ead1e424 ILT |
3208 | else |
3209 | { | |
75f2446e ILT |
3210 | Object* symobj = sym->object(); |
3211 | if (symobj->is_dynamic()) | |
3212 | { | |
3213 | if (sym->needs_dynsym_value()) | |
8851ecca | 3214 | dynsym_value = target.dynsym_value(sym); |
2ea97941 | 3215 | shndx = elfcpp::SHN_UNDEF; |
ce279a62 CC |
3216 | if (sym->is_undef_binding_weak()) |
3217 | binding = elfcpp::STB_WEAK; | |
74f67560 DK |
3218 | else |
3219 | binding = elfcpp::STB_GLOBAL; | |
75f2446e | 3220 | } |
89fc3421 | 3221 | else if (symobj->pluginobj() != NULL) |
2ea97941 | 3222 | shndx = elfcpp::SHN_UNDEF; |
75f2446e | 3223 | else if (in_shndx == elfcpp::SHN_UNDEF |
d491d34e ILT |
3224 | || (!is_ordinary |
3225 | && (in_shndx == elfcpp::SHN_ABS | |
8a5e3e08 | 3226 | || Symbol::is_common_shndx(in_shndx)))) |
2ea97941 | 3227 | shndx = in_shndx; |
75f2446e ILT |
3228 | else |
3229 | { | |
3230 | Relobj* relobj = static_cast<Relobj*>(symobj); | |
ef9beddf | 3231 | Output_section* os = relobj->output_section(in_shndx); |
ef15dade ST |
3232 | if (this->is_section_folded(relobj, in_shndx)) |
3233 | { | |
3234 | // This global symbol must be written out even though | |
3235 | // it is folded. | |
3236 | // Get the os of the section it is folded onto. | |
3237 | Section_id folded = | |
3238 | this->icf_->get_folded_section(relobj, in_shndx); | |
3239 | gold_assert(folded.first !=NULL); | |
3240 | Relobj* folded_obj = | |
3241 | reinterpret_cast<Relobj*>(folded.first); | |
3242 | os = folded_obj->output_section(folded.second); | |
3243 | gold_assert(os != NULL); | |
3244 | } | |
75f2446e | 3245 | gold_assert(os != NULL); |
2ea97941 | 3246 | shndx = os->out_shndx(); |
88dd47ac | 3247 | |
2ea97941 | 3248 | if (shndx >= elfcpp::SHN_LORESERVE) |
d491d34e ILT |
3249 | { |
3250 | if (sym_index != -1U) | |
2ea97941 | 3251 | symtab_xindex->add(sym_index, shndx); |
d491d34e | 3252 | if (dynsym_index != -1U) |
2ea97941 ILT |
3253 | dynsym_xindex->add(dynsym_index, shndx); |
3254 | shndx = elfcpp::SHN_XINDEX; | |
d491d34e ILT |
3255 | } |
3256 | ||
88dd47ac ILT |
3257 | // In object files symbol values are section |
3258 | // relative. | |
8851ecca | 3259 | if (parameters->options().relocatable()) |
88dd47ac | 3260 | sym_value -= os->address(); |
75f2446e | 3261 | } |
ead1e424 ILT |
3262 | } |
3263 | } | |
3264 | break; | |
3265 | ||
3266 | case Symbol::IN_OUTPUT_DATA: | |
502e8a84 CC |
3267 | { |
3268 | Output_data* od = sym->output_data(); | |
3269 | ||
3270 | shndx = od->out_shndx(); | |
3271 | if (shndx >= elfcpp::SHN_LORESERVE) | |
3272 | { | |
3273 | if (sym_index != -1U) | |
3274 | symtab_xindex->add(sym_index, shndx); | |
3275 | if (dynsym_index != -1U) | |
3276 | dynsym_xindex->add(dynsym_index, shndx); | |
3277 | shndx = elfcpp::SHN_XINDEX; | |
3278 | } | |
3279 | ||
3280 | // In object files symbol values are section | |
3281 | // relative. | |
3282 | if (parameters->options().relocatable()) | |
89ede9f5 CC |
3283 | { |
3284 | Output_section* os = od->output_section(); | |
3285 | gold_assert(os != NULL); | |
3286 | sym_value -= os->address(); | |
3287 | } | |
502e8a84 | 3288 | } |
ead1e424 ILT |
3289 | break; |
3290 | ||
3291 | case Symbol::IN_OUTPUT_SEGMENT: | |
eb390844 CC |
3292 | { |
3293 | Output_segment* oseg = sym->output_segment(); | |
3294 | Output_section* osect = oseg->first_section(); | |
3295 | if (osect == NULL) | |
3296 | shndx = elfcpp::SHN_ABS; | |
3297 | else | |
3298 | shndx = osect->out_shndx(); | |
3299 | } | |
ead1e424 ILT |
3300 | break; |
3301 | ||
f3e9c5c5 | 3302 | case Symbol::IS_CONSTANT: |
2ea97941 | 3303 | shndx = elfcpp::SHN_ABS; |
ead1e424 ILT |
3304 | break; |
3305 | ||
f3e9c5c5 | 3306 | case Symbol::IS_UNDEFINED: |
2ea97941 | 3307 | shndx = elfcpp::SHN_UNDEF; |
f3e9c5c5 ILT |
3308 | break; |
3309 | ||
ead1e424 | 3310 | default: |
a3ad94ed | 3311 | gold_unreachable(); |
ead1e424 | 3312 | } |
61ba1cf9 | 3313 | |
16649710 ILT |
3314 | if (sym_index != -1U) |
3315 | { | |
55a93433 ILT |
3316 | sym_index -= first_global_index; |
3317 | gold_assert(sym_index < output_count); | |
3318 | unsigned char* ps = psyms + (sym_index * sym_size); | |
2ea97941 | 3319 | this->sized_write_symbol<size, big_endian>(sym, sym_value, shndx, |
ce279a62 | 3320 | binding, sympool, ps); |
16649710 | 3321 | } |
61ba1cf9 | 3322 | |
16649710 ILT |
3323 | if (dynsym_index != -1U) |
3324 | { | |
3325 | dynsym_index -= first_dynamic_global_index; | |
3326 | gold_assert(dynsym_index < dynamic_count); | |
3327 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
2ea97941 | 3328 | this->sized_write_symbol<size, big_endian>(sym, dynsym_value, shndx, |
ce279a62 | 3329 | binding, dynpool, pd); |
800d9823 CC |
3330 | // Allow a target to adjust dynamic symbol value. |
3331 | parameters->target().adjust_dyn_symbol(sym, pd); | |
16649710 | 3332 | } |
61ba1cf9 ILT |
3333 | } |
3334 | ||
dc1c8a16 CC |
3335 | // Write the target-specific symbols. |
3336 | for (std::vector<Symbol*>::const_iterator p = this->target_symbols_.begin(); | |
3337 | p != this->target_symbols_.end(); | |
3338 | ++p) | |
3339 | { | |
3340 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(*p); | |
3341 | ||
3342 | unsigned int sym_index = sym->symtab_index(); | |
3343 | unsigned int dynsym_index; | |
3344 | if (dynamic_view == NULL) | |
3345 | dynsym_index = -1U; | |
3346 | else | |
3347 | dynsym_index = sym->dynsym_index(); | |
3348 | ||
3349 | unsigned int shndx; | |
3350 | switch (sym->source()) | |
3351 | { | |
3352 | case Symbol::IS_CONSTANT: | |
3353 | shndx = elfcpp::SHN_ABS; | |
3354 | break; | |
3355 | case Symbol::IS_UNDEFINED: | |
3356 | shndx = elfcpp::SHN_UNDEF; | |
3357 | break; | |
3358 | default: | |
3359 | gold_unreachable(); | |
3360 | } | |
3361 | ||
3362 | if (sym_index != -1U) | |
3363 | { | |
3364 | sym_index -= first_global_index; | |
3365 | gold_assert(sym_index < output_count); | |
3366 | unsigned char* ps = psyms + (sym_index * sym_size); | |
3367 | this->sized_write_symbol<size, big_endian>(sym, sym->value(), shndx, | |
3368 | sym->binding(), sympool, | |
3369 | ps); | |
3370 | } | |
3371 | ||
3372 | if (dynsym_index != -1U) | |
3373 | { | |
3374 | dynsym_index -= first_dynamic_global_index; | |
3375 | gold_assert(dynsym_index < dynamic_count); | |
3376 | unsigned char* pd = dynamic_view + (dynsym_index * sym_size); | |
3377 | this->sized_write_symbol<size, big_endian>(sym, sym->value(), shndx, | |
3378 | sym->binding(), dynpool, | |
3379 | pd); | |
3380 | } | |
3381 | } | |
3382 | ||
c06b7b0b | 3383 | of->write_output_view(this->offset_, oview_size, psyms); |
16649710 ILT |
3384 | if (dynamic_view != NULL) |
3385 | of->write_output_view(this->dynamic_offset_, dynamic_size, dynamic_view); | |
3386 | } | |
3387 | ||
3388 | // Write out the symbol SYM, in section SHNDX, to P. POOL is the | |
3389 | // strtab holding the name. | |
3390 | ||
3391 | template<int size, bool big_endian> | |
3392 | void | |
ab5c9e90 ILT |
3393 | Symbol_table::sized_write_symbol( |
3394 | Sized_symbol<size>* sym, | |
2ea97941 ILT |
3395 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
3396 | unsigned int shndx, | |
ce279a62 | 3397 | elfcpp::STB binding, |
ab5c9e90 | 3398 | const Stringpool* pool, |
7d1a9ebb | 3399 | unsigned char* p) const |
16649710 ILT |
3400 | { |
3401 | elfcpp::Sym_write<size, big_endian> osym(p); | |
6d1c4efb ILT |
3402 | if (sym->version() == NULL || !parameters->options().relocatable()) |
3403 | osym.put_st_name(pool->get_offset(sym->name())); | |
3404 | else | |
3405 | osym.put_st_name(pool->get_offset(sym->versioned_name())); | |
2ea97941 | 3406 | osym.put_st_value(value); |
58e54ac2 | 3407 | // Use a symbol size of zero for undefined symbols from shared libraries. |
2ea97941 | 3408 | if (shndx == elfcpp::SHN_UNDEF && sym->is_from_dynobj()) |
58e54ac2 CD |
3409 | osym.put_st_size(0); |
3410 | else | |
3411 | osym.put_st_size(sym->symsize()); | |
53d7974c | 3412 | elfcpp::STT type = sym->type(); |
358de988 | 3413 | gold_assert(type != elfcpp::STT_GNU_IFUNC || !sym->is_from_dynobj()); |
55a93433 ILT |
3414 | // A version script may have overridden the default binding. |
3415 | if (sym->is_forced_local()) | |
53d7974c | 3416 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, type)); |
55a93433 | 3417 | else |
ce279a62 | 3418 | osym.put_st_info(elfcpp::elf_st_info(binding, type)); |
16649710 | 3419 | osym.put_st_other(elfcpp::elf_st_other(sym->visibility(), sym->nonvis())); |
2ea97941 | 3420 | osym.put_st_shndx(shndx); |
61ba1cf9 ILT |
3421 | } |
3422 | ||
9a2d6984 ILT |
3423 | // Check for unresolved symbols in shared libraries. This is |
3424 | // controlled by the --allow-shlib-undefined option. | |
3425 | ||
3426 | // We only warn about libraries for which we have seen all the | |
3427 | // DT_NEEDED entries. We don't try to track down DT_NEEDED entries | |
3428 | // which were not seen in this link. If we didn't see a DT_NEEDED | |
3429 | // entry, we aren't going to be able to reliably report whether the | |
3430 | // symbol is undefined. | |
3431 | ||
fd9d194f ILT |
3432 | // We also don't warn about libraries found in a system library |
3433 | // directory (e.g., /lib or /usr/lib); we assume that those libraries | |
3434 | // are OK. This heuristic avoids problems on GNU/Linux, in which -ldl | |
3435 | // can have undefined references satisfied by ld-linux.so. | |
9a2d6984 ILT |
3436 | |
3437 | inline void | |
fd9d194f | 3438 | Symbol_table::warn_about_undefined_dynobj_symbol(Symbol* sym) const |
9a2d6984 | 3439 | { |
d491d34e | 3440 | bool dummy; |
9a2d6984 ILT |
3441 | if (sym->source() == Symbol::FROM_OBJECT |
3442 | && sym->object()->is_dynamic() | |
d491d34e | 3443 | && sym->shndx(&dummy) == elfcpp::SHN_UNDEF |
9a2d6984 | 3444 | && sym->binding() != elfcpp::STB_WEAK |
8851ecca ILT |
3445 | && !parameters->options().allow_shlib_undefined() |
3446 | && !parameters->target().is_defined_by_abi(sym) | |
fd9d194f | 3447 | && !sym->object()->is_in_system_directory()) |
9a2d6984 ILT |
3448 | { |
3449 | // A very ugly cast. | |
3450 | Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); | |
3451 | if (!dynobj->has_unknown_needed_entries()) | |
f073bbf7 | 3452 | gold_undefined_symbol(sym); |
9a2d6984 ILT |
3453 | } |
3454 | } | |
3455 | ||
a3ad94ed ILT |
3456 | // Write out a section symbol. Return the update offset. |
3457 | ||
3458 | void | |
ca09d69a | 3459 | Symbol_table::write_section_symbol(const Output_section* os, |
d491d34e | 3460 | Output_symtab_xindex* symtab_xindex, |
a3ad94ed ILT |
3461 | Output_file* of, |
3462 | off_t offset) const | |
3463 | { | |
8851ecca | 3464 | switch (parameters->size_and_endianness()) |
a3ad94ed | 3465 | { |
9025d29d | 3466 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca | 3467 | case Parameters::TARGET_32_LITTLE: |
d491d34e ILT |
3468 | this->sized_write_section_symbol<32, false>(os, symtab_xindex, of, |
3469 | offset); | |
8851ecca | 3470 | break; |
9025d29d | 3471 | #endif |
8851ecca ILT |
3472 | #ifdef HAVE_TARGET_32_BIG |
3473 | case Parameters::TARGET_32_BIG: | |
d491d34e ILT |
3474 | this->sized_write_section_symbol<32, true>(os, symtab_xindex, of, |
3475 | offset); | |
8851ecca | 3476 | break; |
9025d29d | 3477 | #endif |
9025d29d | 3478 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca | 3479 | case Parameters::TARGET_64_LITTLE: |
d491d34e ILT |
3480 | this->sized_write_section_symbol<64, false>(os, symtab_xindex, of, |
3481 | offset); | |
8851ecca | 3482 | break; |
9025d29d | 3483 | #endif |
8851ecca ILT |
3484 | #ifdef HAVE_TARGET_64_BIG |
3485 | case Parameters::TARGET_64_BIG: | |
d491d34e ILT |
3486 | this->sized_write_section_symbol<64, true>(os, symtab_xindex, of, |
3487 | offset); | |
8851ecca ILT |
3488 | break; |
3489 | #endif | |
3490 | default: | |
3491 | gold_unreachable(); | |
a3ad94ed | 3492 | } |
a3ad94ed ILT |
3493 | } |
3494 | ||
3495 | // Write out a section symbol, specialized for size and endianness. | |
3496 | ||
3497 | template<int size, bool big_endian> | |
3498 | void | |
3499 | Symbol_table::sized_write_section_symbol(const Output_section* os, | |
d491d34e | 3500 | Output_symtab_xindex* symtab_xindex, |
a3ad94ed ILT |
3501 | Output_file* of, |
3502 | off_t offset) const | |
3503 | { | |
3504 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
3505 | ||
3506 | unsigned char* pov = of->get_output_view(offset, sym_size); | |
3507 | ||
3508 | elfcpp::Sym_write<size, big_endian> osym(pov); | |
3509 | osym.put_st_name(0); | |
b4ecf66b ILT |
3510 | if (parameters->options().relocatable()) |
3511 | osym.put_st_value(0); | |
3512 | else | |
3513 | osym.put_st_value(os->address()); | |
a3ad94ed ILT |
3514 | osym.put_st_size(0); |
3515 | osym.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL, | |
3516 | elfcpp::STT_SECTION)); | |
3517 | osym.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT, 0)); | |
d491d34e | 3518 | |
2ea97941 ILT |
3519 | unsigned int shndx = os->out_shndx(); |
3520 | if (shndx >= elfcpp::SHN_LORESERVE) | |
d491d34e | 3521 | { |
2ea97941 ILT |
3522 | symtab_xindex->add(os->symtab_index(), shndx); |
3523 | shndx = elfcpp::SHN_XINDEX; | |
d491d34e | 3524 | } |
2ea97941 | 3525 | osym.put_st_shndx(shndx); |
a3ad94ed ILT |
3526 | |
3527 | of->write_output_view(offset, sym_size, pov); | |
3528 | } | |
3529 | ||
abaa3995 ILT |
3530 | // Print statistical information to stderr. This is used for --stats. |
3531 | ||
3532 | void | |
3533 | Symbol_table::print_stats() const | |
3534 | { | |
3535 | #if defined(HAVE_TR1_UNORDERED_MAP) || defined(HAVE_EXT_HASH_MAP) | |
3536 | fprintf(stderr, _("%s: symbol table entries: %zu; buckets: %zu\n"), | |
3537 | program_name, this->table_.size(), this->table_.bucket_count()); | |
3538 | #else | |
3539 | fprintf(stderr, _("%s: symbol table entries: %zu\n"), | |
3540 | program_name, this->table_.size()); | |
3541 | #endif | |
ad8f37d1 | 3542 | this->namepool_.print_stats("symbol table stringpool"); |
abaa3995 ILT |
3543 | } |
3544 | ||
ff541f30 ILT |
3545 | // We check for ODR violations by looking for symbols with the same |
3546 | // name for which the debugging information reports that they were | |
71ff8986 | 3547 | // defined in disjoint source locations. When comparing the source |
55382fb7 ILT |
3548 | // location, we consider instances with the same base filename to be |
3549 | // the same. This is because different object files/shared libraries | |
3550 | // can include the same header file using different paths, and | |
3551 | // different optimization settings can make the line number appear to | |
3552 | // be a couple lines off, and we don't want to report an ODR violation | |
3553 | // in those cases. | |
ff541f30 ILT |
3554 | |
3555 | // This struct is used to compare line information, as returned by | |
7bf1f802 | 3556 | // Dwarf_line_info::one_addr2line. It implements a < comparison |
71ff8986 | 3557 | // operator used with std::sort. |
ff541f30 ILT |
3558 | |
3559 | struct Odr_violation_compare | |
3560 | { | |
3561 | bool | |
3562 | operator()(const std::string& s1, const std::string& s2) const | |
3563 | { | |
55382fb7 | 3564 | // Inputs should be of the form "dirname/filename:linenum" where |
71ff8986 | 3565 | // "dirname/" is optional. We want to compare just the filename:linenum. |
55382fb7 | 3566 | |
71ff8986 | 3567 | // Find the last '/' in each string. |
55382fb7 ILT |
3568 | std::string::size_type s1begin = s1.rfind('/'); |
3569 | std::string::size_type s2begin = s2.rfind('/'); | |
55382fb7 ILT |
3570 | // If there was no '/' in a string, start at the beginning. |
3571 | if (s1begin == std::string::npos) | |
3572 | s1begin = 0; | |
3573 | if (s2begin == std::string::npos) | |
3574 | s2begin = 0; | |
71ff8986 ILT |
3575 | return s1.compare(s1begin, std::string::npos, |
3576 | s2, s2begin, std::string::npos) < 0; | |
ff541f30 ILT |
3577 | } |
3578 | }; | |
3579 | ||
71ff8986 ILT |
3580 | // Returns all of the lines attached to LOC, not just the one the |
3581 | // instruction actually came from. | |
3582 | std::vector<std::string> | |
3583 | Symbol_table::linenos_from_loc(const Task* task, | |
3584 | const Symbol_location& loc) | |
3585 | { | |
3586 | // We need to lock the object in order to read it. This | |
3587 | // means that we have to run in a singleton Task. If we | |
3588 | // want to run this in a general Task for better | |
3589 | // performance, we will need one Task for object, plus | |
3590 | // appropriate locking to ensure that we don't conflict with | |
3591 | // other uses of the object. Also note, one_addr2line is not | |
3592 | // currently thread-safe. | |
3593 | Task_lock_obj<Object> tl(task, loc.object); | |
3594 | ||
3595 | std::vector<std::string> result; | |
dc3714f3 AM |
3596 | Symbol_location code_loc = loc; |
3597 | parameters->target().function_location(&code_loc); | |
71ff8986 ILT |
3598 | // 16 is the size of the object-cache that one_addr2line should use. |
3599 | std::string canonical_result = Dwarf_line_info::one_addr2line( | |
dc3714f3 | 3600 | code_loc.object, code_loc.shndx, code_loc.offset, 16, &result); |
71ff8986 ILT |
3601 | if (!canonical_result.empty()) |
3602 | result.push_back(canonical_result); | |
3603 | return result; | |
3604 | } | |
3605 | ||
3606 | // OutputIterator that records if it was ever assigned to. This | |
3607 | // allows it to be used with std::set_intersection() to check for | |
3608 | // intersection rather than computing the intersection. | |
3609 | struct Check_intersection | |
3610 | { | |
3611 | Check_intersection() | |
3612 | : value_(false) | |
3613 | {} | |
3614 | ||
3615 | bool had_intersection() const | |
3616 | { return this->value_; } | |
3617 | ||
3618 | Check_intersection& operator++() | |
3619 | { return *this; } | |
3620 | ||
3621 | Check_intersection& operator*() | |
3622 | { return *this; } | |
3623 | ||
3624 | template<typename T> | |
3625 | Check_intersection& operator=(const T&) | |
3626 | { | |
3627 | this->value_ = true; | |
3628 | return *this; | |
3629 | } | |
3630 | ||
3631 | private: | |
3632 | bool value_; | |
3633 | }; | |
3634 | ||
70e654ba | 3635 | // Check candidate_odr_violations_ to find symbols with the same name |
71ff8986 ILT |
3636 | // but apparently different definitions (different source-file/line-no |
3637 | // for each line assigned to the first instruction). | |
70e654ba ILT |
3638 | |
3639 | void | |
17a1d0a9 ILT |
3640 | Symbol_table::detect_odr_violations(const Task* task, |
3641 | const char* output_file_name) const | |
70e654ba ILT |
3642 | { |
3643 | for (Odr_map::const_iterator it = candidate_odr_violations_.begin(); | |
3644 | it != candidate_odr_violations_.end(); | |
3645 | ++it) | |
3646 | { | |
71ff8986 ILT |
3647 | const char* const symbol_name = it->first; |
3648 | ||
3649 | std::string first_object_name; | |
3650 | std::vector<std::string> first_object_linenos; | |
3651 | ||
3652 | Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator | |
3653 | locs = it->second.begin(); | |
3654 | const Unordered_set<Symbol_location, Symbol_location_hash>::const_iterator | |
3655 | locs_end = it->second.end(); | |
3656 | for (; locs != locs_end && first_object_linenos.empty(); ++locs) | |
70e654ba | 3657 | { |
71ff8986 ILT |
3658 | // Save the line numbers from the first definition to |
3659 | // compare to the other definitions. Ideally, we'd compare | |
3660 | // every definition to every other, but we don't want to | |
3661 | // take O(N^2) time to do this. This shortcut may cause | |
3662 | // false negatives that appear or disappear depending on the | |
3663 | // link order, but it won't cause false positives. | |
3664 | first_object_name = locs->object->name(); | |
3665 | first_object_linenos = this->linenos_from_loc(task, *locs); | |
70e654ba | 3666 | } |
437ddf0c CC |
3667 | if (first_object_linenos.empty()) |
3668 | continue; | |
70e654ba | 3669 | |
71ff8986 | 3670 | // Sort by Odr_violation_compare to make std::set_intersection work. |
437ddf0c | 3671 | std::string first_object_canonical_result = first_object_linenos.back(); |
71ff8986 ILT |
3672 | std::sort(first_object_linenos.begin(), first_object_linenos.end(), |
3673 | Odr_violation_compare()); | |
3674 | ||
3675 | for (; locs != locs_end; ++locs) | |
70e654ba | 3676 | { |
71ff8986 ILT |
3677 | std::vector<std::string> linenos = |
3678 | this->linenos_from_loc(task, *locs); | |
3679 | // linenos will be empty if we couldn't parse the debug info. | |
3680 | if (linenos.empty()) | |
3681 | continue; | |
3682 | // Sort by Odr_violation_compare to make std::set_intersection work. | |
437ddf0c CC |
3683 | gold_assert(!linenos.empty()); |
3684 | std::string second_object_canonical_result = linenos.back(); | |
71ff8986 ILT |
3685 | std::sort(linenos.begin(), linenos.end(), Odr_violation_compare()); |
3686 | ||
3687 | Check_intersection intersection_result = | |
3688 | std::set_intersection(first_object_linenos.begin(), | |
3689 | first_object_linenos.end(), | |
3690 | linenos.begin(), | |
3691 | linenos.end(), | |
3692 | Check_intersection(), | |
3693 | Odr_violation_compare()); | |
3694 | if (!intersection_result.had_intersection()) | |
3695 | { | |
3696 | gold_warning(_("while linking %s: symbol '%s' defined in " | |
3697 | "multiple places (possible ODR violation):"), | |
3698 | output_file_name, demangle(symbol_name).c_str()); | |
3699 | // This only prints one location from each definition, | |
3700 | // which may not be the location we expect to intersect | |
3701 | // with another definition. We could print the whole | |
3702 | // set of locations, but that seems too verbose. | |
71ff8986 | 3703 | fprintf(stderr, _(" %s from %s\n"), |
437ddf0c | 3704 | first_object_canonical_result.c_str(), |
71ff8986 ILT |
3705 | first_object_name.c_str()); |
3706 | fprintf(stderr, _(" %s from %s\n"), | |
437ddf0c | 3707 | second_object_canonical_result.c_str(), |
71ff8986 ILT |
3708 | locs->object->name().c_str()); |
3709 | // Only print one broken pair, to avoid needing to | |
3710 | // compare against a list of the disjoint definition | |
3711 | // locations we've found so far. (If we kept comparing | |
3712 | // against just the first one, we'd get a lot of | |
3713 | // redundant complaints about the second definition | |
3714 | // location.) | |
3715 | break; | |
3716 | } | |
70e654ba ILT |
3717 | } |
3718 | } | |
e4e5049b CS |
3719 | // We only call one_addr2line() in this function, so we can clear its cache. |
3720 | Dwarf_line_info::clear_addr2line_cache(); | |
70e654ba ILT |
3721 | } |
3722 | ||
f6ce93d6 ILT |
3723 | // Warnings functions. |
3724 | ||
3725 | // Add a new warning. | |
3726 | ||
3727 | void | |
2ea97941 | 3728 | Warnings::add_warning(Symbol_table* symtab, const char* name, Object* obj, |
cb295612 | 3729 | const std::string& warning) |
f6ce93d6 | 3730 | { |
2ea97941 ILT |
3731 | name = symtab->canonicalize_name(name); |
3732 | this->warnings_[name].set(obj, warning); | |
f6ce93d6 ILT |
3733 | } |
3734 | ||
3735 | // Look through the warnings and mark the symbols for which we should | |
3736 | // warn. This is called during Layout::finalize when we know the | |
3737 | // sources for all the symbols. | |
3738 | ||
3739 | void | |
cb295612 | 3740 | Warnings::note_warnings(Symbol_table* symtab) |
f6ce93d6 ILT |
3741 | { |
3742 | for (Warning_table::iterator p = this->warnings_.begin(); | |
3743 | p != this->warnings_.end(); | |
3744 | ++p) | |
3745 | { | |
3746 | Symbol* sym = symtab->lookup(p->first, NULL); | |
3747 | if (sym != NULL | |
3748 | && sym->source() == Symbol::FROM_OBJECT | |
3749 | && sym->object() == p->second.object) | |
cb295612 | 3750 | sym->set_has_warning(); |
f6ce93d6 ILT |
3751 | } |
3752 | } | |
3753 | ||
3754 | // Issue a warning. This is called when we see a relocation against a | |
3755 | // symbol for which has a warning. | |
3756 | ||
75f2446e | 3757 | template<int size, bool big_endian> |
f6ce93d6 | 3758 | void |
75f2446e ILT |
3759 | Warnings::issue_warning(const Symbol* sym, |
3760 | const Relocate_info<size, big_endian>* relinfo, | |
3761 | size_t relnum, off_t reloffset) const | |
f6ce93d6 | 3762 | { |
a3ad94ed | 3763 | gold_assert(sym->has_warning()); |
9d3b0698 ILT |
3764 | |
3765 | // We don't want to issue a warning for a relocation against the | |
3766 | // symbol in the same object file in which the symbol is defined. | |
3767 | if (sym->object() == relinfo->object) | |
3768 | return; | |
3769 | ||
f6ce93d6 | 3770 | Warning_table::const_iterator p = this->warnings_.find(sym->name()); |
a3ad94ed | 3771 | gold_assert(p != this->warnings_.end()); |
75f2446e ILT |
3772 | gold_warning_at_location(relinfo, relnum, reloffset, |
3773 | "%s", p->second.text.c_str()); | |
f6ce93d6 ILT |
3774 | } |
3775 | ||
14bfc3f5 ILT |
3776 | // Instantiate the templates we need. We could use the configure |
3777 | // script to restrict this to only the ones needed for implemented | |
3778 | // targets. | |
3779 | ||
c7912668 ILT |
3780 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
3781 | template | |
3782 | void | |
3783 | Sized_symbol<32>::allocate_common(Output_data*, Value_type); | |
3784 | #endif | |
3785 | ||
3786 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
3787 | template | |
3788 | void | |
3789 | Sized_symbol<64>::allocate_common(Output_data*, Value_type); | |
3790 | #endif | |
3791 | ||
193a53d9 | 3792 | #ifdef HAVE_TARGET_32_LITTLE |
14bfc3f5 ILT |
3793 | template |
3794 | void | |
193a53d9 | 3795 | Symbol_table::add_from_relobj<32, false>( |
6fa2a40b | 3796 | Sized_relobj_file<32, false>* relobj, |
f6ce93d6 | 3797 | const unsigned char* syms, |
14bfc3f5 | 3798 | size_t count, |
d491d34e | 3799 | size_t symndx_offset, |
14bfc3f5 ILT |
3800 | const char* sym_names, |
3801 | size_t sym_name_size, | |
6fa2a40b | 3802 | Sized_relobj_file<32, false>::Symbols* sympointers, |
92de84a6 | 3803 | size_t* defined); |
193a53d9 | 3804 | #endif |
14bfc3f5 | 3805 | |
193a53d9 | 3806 | #ifdef HAVE_TARGET_32_BIG |
14bfc3f5 ILT |
3807 | template |
3808 | void | |
193a53d9 | 3809 | Symbol_table::add_from_relobj<32, true>( |
6fa2a40b | 3810 | Sized_relobj_file<32, true>* relobj, |
f6ce93d6 | 3811 | const unsigned char* syms, |
14bfc3f5 | 3812 | size_t count, |
d491d34e | 3813 | size_t symndx_offset, |
14bfc3f5 ILT |
3814 | const char* sym_names, |
3815 | size_t sym_name_size, | |
6fa2a40b | 3816 | Sized_relobj_file<32, true>::Symbols* sympointers, |
92de84a6 | 3817 | size_t* defined); |
193a53d9 | 3818 | #endif |
14bfc3f5 | 3819 | |
193a53d9 | 3820 | #ifdef HAVE_TARGET_64_LITTLE |
14bfc3f5 ILT |
3821 | template |
3822 | void | |
193a53d9 | 3823 | Symbol_table::add_from_relobj<64, false>( |
6fa2a40b | 3824 | Sized_relobj_file<64, false>* relobj, |
f6ce93d6 | 3825 | const unsigned char* syms, |
14bfc3f5 | 3826 | size_t count, |
d491d34e | 3827 | size_t symndx_offset, |
14bfc3f5 ILT |
3828 | const char* sym_names, |
3829 | size_t sym_name_size, | |
6fa2a40b | 3830 | Sized_relobj_file<64, false>::Symbols* sympointers, |
92de84a6 | 3831 | size_t* defined); |
193a53d9 | 3832 | #endif |
14bfc3f5 | 3833 | |
193a53d9 | 3834 | #ifdef HAVE_TARGET_64_BIG |
14bfc3f5 ILT |
3835 | template |
3836 | void | |
193a53d9 | 3837 | Symbol_table::add_from_relobj<64, true>( |
6fa2a40b | 3838 | Sized_relobj_file<64, true>* relobj, |
f6ce93d6 | 3839 | const unsigned char* syms, |
14bfc3f5 | 3840 | size_t count, |
d491d34e | 3841 | size_t symndx_offset, |
14bfc3f5 ILT |
3842 | const char* sym_names, |
3843 | size_t sym_name_size, | |
6fa2a40b | 3844 | Sized_relobj_file<64, true>::Symbols* sympointers, |
92de84a6 | 3845 | size_t* defined); |
193a53d9 | 3846 | #endif |
14bfc3f5 | 3847 | |
89fc3421 CC |
3848 | #ifdef HAVE_TARGET_32_LITTLE |
3849 | template | |
3850 | Symbol* | |
3851 | Symbol_table::add_from_pluginobj<32, false>( | |
3852 | Sized_pluginobj<32, false>* obj, | |
3853 | const char* name, | |
3854 | const char* ver, | |
3855 | elfcpp::Sym<32, false>* sym); | |
3856 | #endif | |
3857 | ||
3858 | #ifdef HAVE_TARGET_32_BIG | |
3859 | template | |
3860 | Symbol* | |
3861 | Symbol_table::add_from_pluginobj<32, true>( | |
3862 | Sized_pluginobj<32, true>* obj, | |
3863 | const char* name, | |
3864 | const char* ver, | |
3865 | elfcpp::Sym<32, true>* sym); | |
3866 | #endif | |
3867 | ||
3868 | #ifdef HAVE_TARGET_64_LITTLE | |
3869 | template | |
3870 | Symbol* | |
3871 | Symbol_table::add_from_pluginobj<64, false>( | |
3872 | Sized_pluginobj<64, false>* obj, | |
3873 | const char* name, | |
3874 | const char* ver, | |
3875 | elfcpp::Sym<64, false>* sym); | |
3876 | #endif | |
3877 | ||
3878 | #ifdef HAVE_TARGET_64_BIG | |
3879 | template | |
3880 | Symbol* | |
3881 | Symbol_table::add_from_pluginobj<64, true>( | |
3882 | Sized_pluginobj<64, true>* obj, | |
3883 | const char* name, | |
3884 | const char* ver, | |
3885 | elfcpp::Sym<64, true>* sym); | |
3886 | #endif | |
3887 | ||
193a53d9 | 3888 | #ifdef HAVE_TARGET_32_LITTLE |
dbe717ef ILT |
3889 | template |
3890 | void | |
193a53d9 ILT |
3891 | Symbol_table::add_from_dynobj<32, false>( |
3892 | Sized_dynobj<32, false>* dynobj, | |
dbe717ef ILT |
3893 | const unsigned char* syms, |
3894 | size_t count, | |
3895 | const char* sym_names, | |
3896 | size_t sym_name_size, | |
3897 | const unsigned char* versym, | |
3898 | size_t versym_size, | |
92de84a6 | 3899 | const std::vector<const char*>* version_map, |
6fa2a40b | 3900 | Sized_relobj_file<32, false>::Symbols* sympointers, |
92de84a6 | 3901 | size_t* defined); |
193a53d9 | 3902 | #endif |
dbe717ef | 3903 | |
193a53d9 | 3904 | #ifdef HAVE_TARGET_32_BIG |
dbe717ef ILT |
3905 | template |
3906 | void | |
193a53d9 ILT |
3907 | Symbol_table::add_from_dynobj<32, true>( |
3908 | Sized_dynobj<32, true>* dynobj, | |
dbe717ef ILT |
3909 | const unsigned char* syms, |
3910 | size_t count, | |
3911 | const char* sym_names, | |
3912 | size_t sym_name_size, | |
3913 | const unsigned char* versym, | |
3914 | size_t versym_size, | |
92de84a6 | 3915 | const std::vector<const char*>* version_map, |
6fa2a40b | 3916 | Sized_relobj_file<32, true>::Symbols* sympointers, |
92de84a6 | 3917 | size_t* defined); |
193a53d9 | 3918 | #endif |
dbe717ef | 3919 | |
193a53d9 | 3920 | #ifdef HAVE_TARGET_64_LITTLE |
dbe717ef ILT |
3921 | template |
3922 | void | |
193a53d9 ILT |
3923 | Symbol_table::add_from_dynobj<64, false>( |
3924 | Sized_dynobj<64, false>* dynobj, | |
dbe717ef ILT |
3925 | const unsigned char* syms, |
3926 | size_t count, | |
3927 | const char* sym_names, | |
3928 | size_t sym_name_size, | |
3929 | const unsigned char* versym, | |
3930 | size_t versym_size, | |
92de84a6 | 3931 | const std::vector<const char*>* version_map, |
6fa2a40b | 3932 | Sized_relobj_file<64, false>::Symbols* sympointers, |
92de84a6 | 3933 | size_t* defined); |
193a53d9 | 3934 | #endif |
dbe717ef | 3935 | |
193a53d9 | 3936 | #ifdef HAVE_TARGET_64_BIG |
dbe717ef ILT |
3937 | template |
3938 | void | |
193a53d9 ILT |
3939 | Symbol_table::add_from_dynobj<64, true>( |
3940 | Sized_dynobj<64, true>* dynobj, | |
dbe717ef ILT |
3941 | const unsigned char* syms, |
3942 | size_t count, | |
3943 | const char* sym_names, | |
3944 | size_t sym_name_size, | |
3945 | const unsigned char* versym, | |
3946 | size_t versym_size, | |
92de84a6 | 3947 | const std::vector<const char*>* version_map, |
6fa2a40b | 3948 | Sized_relobj_file<64, true>::Symbols* sympointers, |
92de84a6 | 3949 | size_t* defined); |
193a53d9 | 3950 | #endif |
dbe717ef | 3951 | |
cdc29364 CC |
3952 | #ifdef HAVE_TARGET_32_LITTLE |
3953 | template | |
26d3c67d | 3954 | Sized_symbol<32>* |
cdc29364 CC |
3955 | Symbol_table::add_from_incrobj( |
3956 | Object* obj, | |
3957 | const char* name, | |
3958 | const char* ver, | |
3959 | elfcpp::Sym<32, false>* sym); | |
3960 | #endif | |
3961 | ||
3962 | #ifdef HAVE_TARGET_32_BIG | |
3963 | template | |
26d3c67d | 3964 | Sized_symbol<32>* |
cdc29364 CC |
3965 | Symbol_table::add_from_incrobj( |
3966 | Object* obj, | |
3967 | const char* name, | |
3968 | const char* ver, | |
3969 | elfcpp::Sym<32, true>* sym); | |
3970 | #endif | |
3971 | ||
3972 | #ifdef HAVE_TARGET_64_LITTLE | |
3973 | template | |
26d3c67d | 3974 | Sized_symbol<64>* |
cdc29364 CC |
3975 | Symbol_table::add_from_incrobj( |
3976 | Object* obj, | |
3977 | const char* name, | |
3978 | const char* ver, | |
3979 | elfcpp::Sym<64, false>* sym); | |
3980 | #endif | |
3981 | ||
3982 | #ifdef HAVE_TARGET_64_BIG | |
3983 | template | |
26d3c67d | 3984 | Sized_symbol<64>* |
cdc29364 CC |
3985 | Symbol_table::add_from_incrobj( |
3986 | Object* obj, | |
3987 | const char* name, | |
3988 | const char* ver, | |
3989 | elfcpp::Sym<64, true>* sym); | |
3990 | #endif | |
3991 | ||
46fe1623 ILT |
3992 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
3993 | template | |
3994 | void | |
fe8718a4 | 3995 | Symbol_table::define_with_copy_reloc<32>( |
fe8718a4 ILT |
3996 | Sized_symbol<32>* sym, |
3997 | Output_data* posd, | |
2ea97941 | 3998 | elfcpp::Elf_types<32>::Elf_Addr value); |
46fe1623 ILT |
3999 | #endif |
4000 | ||
4001 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
4002 | template | |
4003 | void | |
fe8718a4 | 4004 | Symbol_table::define_with_copy_reloc<64>( |
fe8718a4 ILT |
4005 | Sized_symbol<64>* sym, |
4006 | Output_data* posd, | |
2ea97941 | 4007 | elfcpp::Elf_types<64>::Elf_Addr value); |
46fe1623 ILT |
4008 | #endif |
4009 | ||
beacaa96 CC |
4010 | #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG) |
4011 | template | |
4012 | void | |
4013 | Sized_symbol<32>::init_output_data(const char* name, const char* version, | |
4014 | Output_data* od, Value_type value, | |
4015 | Size_type symsize, elfcpp::STT type, | |
4016 | elfcpp::STB binding, | |
4017 | elfcpp::STV visibility, | |
4018 | unsigned char nonvis, | |
4019 | bool offset_is_from_end, | |
4020 | bool is_predefined); | |
8d04e81d CC |
4021 | |
4022 | template | |
4023 | void | |
4024 | Sized_symbol<32>::init_constant(const char* name, const char* version, | |
4025 | Value_type value, Size_type symsize, | |
4026 | elfcpp::STT type, elfcpp::STB binding, | |
4027 | elfcpp::STV visibility, unsigned char nonvis, | |
4028 | bool is_predefined); | |
4029 | ||
4030 | template | |
4031 | void | |
4032 | Sized_symbol<32>::init_undefined(const char* name, const char* version, | |
4033 | Value_type value, elfcpp::STT type, | |
4034 | elfcpp::STB binding, elfcpp::STV visibility, | |
4035 | unsigned char nonvis); | |
beacaa96 CC |
4036 | #endif |
4037 | ||
4038 | #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG) | |
4039 | template | |
4040 | void | |
4041 | Sized_symbol<64>::init_output_data(const char* name, const char* version, | |
4042 | Output_data* od, Value_type value, | |
4043 | Size_type symsize, elfcpp::STT type, | |
4044 | elfcpp::STB binding, | |
4045 | elfcpp::STV visibility, | |
4046 | unsigned char nonvis, | |
4047 | bool offset_is_from_end, | |
4048 | bool is_predefined); | |
8d04e81d CC |
4049 | |
4050 | template | |
4051 | void | |
4052 | Sized_symbol<64>::init_constant(const char* name, const char* version, | |
4053 | Value_type value, Size_type symsize, | |
4054 | elfcpp::STT type, elfcpp::STB binding, | |
4055 | elfcpp::STV visibility, unsigned char nonvis, | |
4056 | bool is_predefined); | |
4057 | ||
4058 | template | |
4059 | void | |
4060 | Sized_symbol<64>::init_undefined(const char* name, const char* version, | |
4061 | Value_type value, elfcpp::STT type, | |
4062 | elfcpp::STB binding, elfcpp::STV visibility, | |
4063 | unsigned char nonvis); | |
beacaa96 CC |
4064 | #endif |
4065 | ||
75f2446e ILT |
4066 | #ifdef HAVE_TARGET_32_LITTLE |
4067 | template | |
4068 | void | |
4069 | Warnings::issue_warning<32, false>(const Symbol* sym, | |
4070 | const Relocate_info<32, false>* relinfo, | |
4071 | size_t relnum, off_t reloffset) const; | |
4072 | #endif | |
4073 | ||
4074 | #ifdef HAVE_TARGET_32_BIG | |
4075 | template | |
4076 | void | |
4077 | Warnings::issue_warning<32, true>(const Symbol* sym, | |
4078 | const Relocate_info<32, true>* relinfo, | |
4079 | size_t relnum, off_t reloffset) const; | |
4080 | #endif | |
4081 | ||
4082 | #ifdef HAVE_TARGET_64_LITTLE | |
4083 | template | |
4084 | void | |
4085 | Warnings::issue_warning<64, false>(const Symbol* sym, | |
4086 | const Relocate_info<64, false>* relinfo, | |
4087 | size_t relnum, off_t reloffset) const; | |
4088 | #endif | |
4089 | ||
4090 | #ifdef HAVE_TARGET_64_BIG | |
4091 | template | |
4092 | void | |
4093 | Warnings::issue_warning<64, true>(const Symbol* sym, | |
4094 | const Relocate_info<64, true>* relinfo, | |
4095 | size_t relnum, off_t reloffset) const; | |
4096 | #endif | |
4097 | ||
14bfc3f5 | 4098 | } // End namespace gold. |