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bae7f79e ILT |
1 | // symtab.h -- the gold symbol table -*- C++ -*- |
2 | ||
3 | // Symbol_table | |
4 | // The symbol table. | |
5 | ||
bae7f79e ILT |
6 | #include <string> |
7 | #include <utility> | |
ead1e424 | 8 | #include <vector> |
bae7f79e ILT |
9 | |
10 | #include "elfcpp.h" | |
7e1edb90 | 11 | #include "parameters.h" |
14bfc3f5 | 12 | #include "stringpool.h" |
f6ce93d6 | 13 | #include "object.h" |
bae7f79e ILT |
14 | |
15 | #ifndef GOLD_SYMTAB_H | |
16 | #define GOLD_SYMTAB_H | |
17 | ||
18 | namespace gold | |
19 | { | |
20 | ||
14bfc3f5 | 21 | class Object; |
f6ce93d6 | 22 | class Relobj; |
dbe717ef ILT |
23 | template<int size, bool big_endian> |
24 | class Sized_relobj; | |
f6ce93d6 | 25 | class Dynobj; |
dbe717ef ILT |
26 | template<int size, bool big_endian> |
27 | class Sized_dynobj; | |
14b31740 | 28 | class Versions; |
ead1e424 | 29 | class Output_data; |
a3ad94ed | 30 | class Output_section; |
ead1e424 | 31 | class Output_segment; |
61ba1cf9 ILT |
32 | class Output_file; |
33 | class Target; | |
14bfc3f5 | 34 | |
14bfc3f5 ILT |
35 | // The base class of an entry in the symbol table. The symbol table |
36 | // can have a lot of entries, so we don't want this class to big. | |
37 | // Size dependent fields can be found in the template class | |
38 | // Sized_symbol. Targets may support their own derived classes. | |
bae7f79e | 39 | |
bae7f79e ILT |
40 | class Symbol |
41 | { | |
42 | public: | |
ead1e424 ILT |
43 | // Because we want the class to be small, we don't use any virtual |
44 | // functions. But because symbols can be defined in different | |
45 | // places, we need to classify them. This enum is the different | |
46 | // sources of symbols we support. | |
47 | enum Source | |
48 | { | |
f6ce93d6 ILT |
49 | // Symbol defined in a relocatable or dynamic input file--this is |
50 | // the most common case. | |
ead1e424 ILT |
51 | FROM_OBJECT, |
52 | // Symbol defined in an Output_data, a special section created by | |
53 | // the target. | |
54 | IN_OUTPUT_DATA, | |
55 | // Symbol defined in an Output_segment, with no associated | |
56 | // section. | |
57 | IN_OUTPUT_SEGMENT, | |
58 | // Symbol value is constant. | |
59 | CONSTANT | |
60 | }; | |
61 | ||
62 | // When the source is IN_OUTPUT_SEGMENT, we need to describe what | |
63 | // the offset means. | |
64 | enum Segment_offset_base | |
65 | { | |
66 | // From the start of the segment. | |
67 | SEGMENT_START, | |
68 | // From the end of the segment. | |
69 | SEGMENT_END, | |
70 | // From the filesz of the segment--i.e., after the loaded bytes | |
71 | // but before the bytes which are allocated but zeroed. | |
72 | SEGMENT_BSS | |
73 | }; | |
74 | ||
14bfc3f5 ILT |
75 | // Return the symbol name. |
76 | const char* | |
77 | name() const | |
78 | { return this->name_; } | |
79 | ||
80 | // Return the symbol version. This will return NULL for an | |
81 | // unversioned symbol. | |
82 | const char* | |
83 | version() const | |
84 | { return this->version_; } | |
85 | ||
ead1e424 ILT |
86 | // Return the symbol source. |
87 | Source | |
88 | source() const | |
89 | { return this->source_; } | |
90 | ||
14bfc3f5 ILT |
91 | // Return the object with which this symbol is associated. |
92 | Object* | |
93 | object() const | |
ead1e424 | 94 | { |
a3ad94ed | 95 | gold_assert(this->source_ == FROM_OBJECT); |
ead1e424 ILT |
96 | return this->u_.from_object.object; |
97 | } | |
98 | ||
f6ce93d6 ILT |
99 | // Return the index of the section in the input relocatable or |
100 | // dynamic object file. | |
ead1e424 | 101 | unsigned int |
16649710 | 102 | shndx() const |
ead1e424 | 103 | { |
a3ad94ed | 104 | gold_assert(this->source_ == FROM_OBJECT); |
16649710 | 105 | return this->u_.from_object.shndx; |
ead1e424 ILT |
106 | } |
107 | ||
108 | // Return the output data section with which this symbol is | |
109 | // associated, if the symbol was specially defined with respect to | |
110 | // an output data section. | |
111 | Output_data* | |
112 | output_data() const | |
113 | { | |
a3ad94ed | 114 | gold_assert(this->source_ == IN_OUTPUT_DATA); |
ead1e424 ILT |
115 | return this->u_.in_output_data.output_data; |
116 | } | |
117 | ||
118 | // If this symbol was defined with respect to an output data | |
119 | // section, return whether the value is an offset from end. | |
120 | bool | |
121 | offset_is_from_end() const | |
122 | { | |
a3ad94ed | 123 | gold_assert(this->source_ == IN_OUTPUT_DATA); |
ead1e424 ILT |
124 | return this->u_.in_output_data.offset_is_from_end; |
125 | } | |
126 | ||
127 | // Return the output segment with which this symbol is associated, | |
128 | // if the symbol was specially defined with respect to an output | |
129 | // segment. | |
130 | Output_segment* | |
131 | output_segment() const | |
132 | { | |
a3ad94ed | 133 | gold_assert(this->source_ == IN_OUTPUT_SEGMENT); |
ead1e424 ILT |
134 | return this->u_.in_output_segment.output_segment; |
135 | } | |
136 | ||
137 | // If this symbol was defined with respect to an output segment, | |
138 | // return the offset base. | |
139 | Segment_offset_base | |
140 | offset_base() const | |
141 | { | |
a3ad94ed | 142 | gold_assert(this->source_ == IN_OUTPUT_SEGMENT); |
ead1e424 ILT |
143 | return this->u_.in_output_segment.offset_base; |
144 | } | |
14bfc3f5 ILT |
145 | |
146 | // Return the symbol binding. | |
147 | elfcpp::STB | |
148 | binding() const | |
149 | { return this->binding_; } | |
150 | ||
1564db8d ILT |
151 | // Return the symbol type. |
152 | elfcpp::STT | |
153 | type() const | |
154 | { return this->type_; } | |
155 | ||
156 | // Return the symbol visibility. | |
157 | elfcpp::STV | |
158 | visibility() const | |
159 | { return this->visibility_; } | |
160 | ||
161 | // Return the non-visibility part of the st_other field. | |
162 | unsigned char | |
ead1e424 ILT |
163 | nonvis() const |
164 | { return this->nonvis_; } | |
14bfc3f5 | 165 | |
1564db8d ILT |
166 | // Return whether this symbol is a forwarder. This will never be |
167 | // true of a symbol found in the hash table, but may be true of | |
168 | // symbol pointers attached to object files. | |
169 | bool | |
170 | is_forwarder() const | |
171 | { return this->is_forwarder_; } | |
172 | ||
173 | // Mark this symbol as a forwarder. | |
174 | void | |
175 | set_forwarder() | |
176 | { this->is_forwarder_ = true; } | |
177 | ||
c06b7b0b ILT |
178 | // Return whether this symbol needs an entry in the dynamic symbol |
179 | // table. | |
180 | bool | |
181 | needs_dynsym_entry() const | |
429c1569 ILT |
182 | { |
183 | return (this->needs_dynsym_entry_ | |
184 | || (this->in_reg() && this->in_dyn())); | |
185 | } | |
c06b7b0b ILT |
186 | |
187 | // Mark this symbol as needing an entry in the dynamic symbol table. | |
188 | void | |
189 | set_needs_dynsym_entry() | |
190 | { this->needs_dynsym_entry_ = true; } | |
191 | ||
008db82e ILT |
192 | // Return whether this symbol has been seen in a regular object. |
193 | bool | |
194 | in_reg() const | |
195 | { return this->in_reg_; } | |
196 | ||
197 | // Mark this symbol as having been seen in a regular object. | |
198 | void | |
199 | set_in_reg() | |
200 | { this->in_reg_ = true; } | |
201 | ||
1ebd95fd ILT |
202 | // Return whether this symbol has been seen in a dynamic object. |
203 | bool | |
204 | in_dyn() const | |
205 | { return this->in_dyn_; } | |
206 | ||
f6ce93d6 | 207 | // Mark this symbol as having been seen in a dynamic object. |
1564db8d ILT |
208 | void |
209 | set_in_dyn() | |
210 | { this->in_dyn_ = true; } | |
211 | ||
c06b7b0b ILT |
212 | // Return the index of this symbol in the output file symbol table. |
213 | // A value of -1U means that this symbol is not going into the | |
214 | // output file. This starts out as zero, and is set to a non-zero | |
215 | // value by Symbol_table::finalize. It is an error to ask for the | |
216 | // symbol table index before it has been set. | |
217 | unsigned int | |
218 | symtab_index() const | |
219 | { | |
a3ad94ed | 220 | gold_assert(this->symtab_index_ != 0); |
c06b7b0b ILT |
221 | return this->symtab_index_; |
222 | } | |
223 | ||
224 | // Set the index of the symbol in the output file symbol table. | |
225 | void | |
226 | set_symtab_index(unsigned int index) | |
227 | { | |
a3ad94ed | 228 | gold_assert(index != 0); |
c06b7b0b ILT |
229 | this->symtab_index_ = index; |
230 | } | |
231 | ||
a3ad94ed ILT |
232 | // Return whether this symbol already has an index in the output |
233 | // file symbol table. | |
234 | bool | |
235 | has_symtab_index() const | |
236 | { return this->symtab_index_ != 0; } | |
237 | ||
c06b7b0b ILT |
238 | // Return the index of this symbol in the dynamic symbol table. A |
239 | // value of -1U means that this symbol is not going into the dynamic | |
240 | // symbol table. This starts out as zero, and is set to a non-zero | |
241 | // during Layout::finalize. It is an error to ask for the dynamic | |
242 | // symbol table index before it has been set. | |
243 | unsigned int | |
244 | dynsym_index() const | |
245 | { | |
a3ad94ed | 246 | gold_assert(this->dynsym_index_ != 0); |
c06b7b0b ILT |
247 | return this->dynsym_index_; |
248 | } | |
249 | ||
250 | // Set the index of the symbol in the dynamic symbol table. | |
251 | void | |
252 | set_dynsym_index(unsigned int index) | |
253 | { | |
a3ad94ed | 254 | gold_assert(index != 0); |
c06b7b0b ILT |
255 | this->dynsym_index_ = index; |
256 | } | |
257 | ||
16649710 ILT |
258 | // Return whether this symbol already has an index in the dynamic |
259 | // symbol table. | |
260 | bool | |
261 | has_dynsym_index() const | |
262 | { return this->dynsym_index_ != 0; } | |
263 | ||
ead1e424 | 264 | // Return whether this symbol has an entry in the GOT section. |
92e059d8 | 265 | bool |
ead1e424 ILT |
266 | has_got_offset() const |
267 | { return this->has_got_offset_; } | |
268 | ||
269 | // Return the offset into the GOT section of this symbol. | |
270 | unsigned int | |
271 | got_offset() const | |
272 | { | |
a3ad94ed | 273 | gold_assert(this->has_got_offset()); |
ead1e424 ILT |
274 | return this->got_offset_; |
275 | } | |
276 | ||
277 | // Set the GOT offset of this symbol. | |
278 | void | |
279 | set_got_offset(unsigned int got_offset) | |
280 | { | |
281 | this->has_got_offset_ = true; | |
282 | this->got_offset_ = got_offset; | |
283 | } | |
284 | ||
a3ad94ed | 285 | // Return whether this symbol has an entry in the PLT section. |
ead1e424 | 286 | bool |
a3ad94ed ILT |
287 | has_plt_offset() const |
288 | { return this->has_plt_offset_; } | |
289 | ||
290 | // Return the offset into the PLT section of this symbol. | |
291 | unsigned int | |
292 | plt_offset() const | |
293 | { | |
294 | gold_assert(this->has_plt_offset()); | |
295 | return this->plt_offset_; | |
296 | } | |
297 | ||
298 | // Set the PLT offset of this symbol. | |
299 | void | |
300 | set_plt_offset(unsigned int plt_offset) | |
301 | { | |
302 | this->has_plt_offset_ = true; | |
303 | this->plt_offset_ = plt_offset; | |
304 | } | |
305 | ||
306 | // Return true if the final value of this symbol is known at link | |
307 | // time. | |
308 | bool | |
7e1edb90 | 309 | final_value_is_known() const |
a3ad94ed | 310 | { |
7e1edb90 | 311 | if (parameters->output_is_shared()) |
a3ad94ed ILT |
312 | return false; |
313 | return this->source_ != FROM_OBJECT || !this->object()->is_dynamic(); | |
314 | } | |
ead1e424 | 315 | |
f6ce93d6 ILT |
316 | // Return whether this is a defined symbol (not undefined or |
317 | // common). | |
318 | bool | |
319 | is_defined() const | |
320 | { | |
321 | return (this->source_ != FROM_OBJECT | |
16649710 ILT |
322 | || (this->shndx() != elfcpp::SHN_UNDEF |
323 | && this->shndx() != elfcpp::SHN_COMMON)); | |
a3ad94ed ILT |
324 | } |
325 | ||
14b31740 | 326 | // Return true if this symbol is from a dynamic object. |
a3ad94ed | 327 | bool |
14b31740 | 328 | is_from_dynobj() const |
a3ad94ed | 329 | { |
14b31740 | 330 | return this->source_ == FROM_OBJECT && this->object()->is_dynamic(); |
f6ce93d6 ILT |
331 | } |
332 | ||
ead1e424 ILT |
333 | // Return whether this is an undefined symbol. |
334 | bool | |
335 | is_undefined() const | |
336 | { | |
16649710 | 337 | return this->source_ == FROM_OBJECT && this->shndx() == elfcpp::SHN_UNDEF; |
ead1e424 ILT |
338 | } |
339 | ||
340 | // Return whether this is a common symbol. | |
341 | bool | |
342 | is_common() const | |
343 | { | |
f6ce93d6 | 344 | return (this->source_ == FROM_OBJECT |
16649710 | 345 | && (this->shndx() == elfcpp::SHN_COMMON |
f6ce93d6 | 346 | || this->type_ == elfcpp::STT_COMMON)); |
ead1e424 | 347 | } |
92e059d8 | 348 | |
a6badf5a ILT |
349 | // Return whether this symbol can be seen outside this object. |
350 | bool | |
351 | is_externally_visible() const | |
352 | { | |
353 | return (this->visibility_ == elfcpp::STV_DEFAULT | |
354 | || this->visibility_ == elfcpp::STV_PROTECTED); | |
355 | } | |
356 | ||
f6ce93d6 ILT |
357 | // Return whether there should be a warning for references to this |
358 | // symbol. | |
359 | bool | |
360 | has_warning() const | |
361 | { return this->has_warning_; } | |
362 | ||
363 | // Mark this symbol as having a warning. | |
364 | void | |
365 | set_has_warning() | |
366 | { this->has_warning_ = true; } | |
367 | ||
14bfc3f5 ILT |
368 | protected: |
369 | // Instances of this class should always be created at a specific | |
370 | // size. | |
371 | Symbol() | |
f6ce93d6 | 372 | { memset(this, 0, sizeof *this); } |
14bfc3f5 | 373 | |
ead1e424 ILT |
374 | // Initialize the general fields. |
375 | void | |
376 | init_fields(const char* name, const char* version, | |
377 | elfcpp::STT type, elfcpp::STB binding, | |
378 | elfcpp::STV visibility, unsigned char nonvis); | |
379 | ||
14bfc3f5 ILT |
380 | // Initialize fields from an ELF symbol in OBJECT. |
381 | template<int size, bool big_endian> | |
382 | void | |
383 | init_base(const char *name, const char* version, Object* object, | |
384 | const elfcpp::Sym<size, big_endian>&); | |
bae7f79e | 385 | |
ead1e424 ILT |
386 | // Initialize fields for an Output_data. |
387 | void | |
388 | init_base(const char* name, Output_data*, elfcpp::STT, elfcpp::STB, | |
389 | elfcpp::STV, unsigned char nonvis, bool offset_is_from_end); | |
390 | ||
391 | // Initialize fields for an Output_segment. | |
392 | void | |
393 | init_base(const char* name, Output_segment* os, elfcpp::STT type, | |
394 | elfcpp::STB binding, elfcpp::STV visibility, | |
395 | unsigned char nonvis, Segment_offset_base offset_base); | |
396 | ||
397 | // Initialize fields for a constant. | |
398 | void | |
399 | init_base(const char* name, elfcpp::STT type, elfcpp::STB binding, | |
400 | elfcpp::STV visibility, unsigned char nonvis); | |
401 | ||
1564db8d ILT |
402 | // Override existing symbol. |
403 | template<int size, bool big_endian> | |
404 | void | |
14b31740 ILT |
405 | override_base(const elfcpp::Sym<size, big_endian>&, Object* object, |
406 | const char* version); | |
1564db8d | 407 | |
86f2e683 ILT |
408 | // Override existing symbol with a special symbol. |
409 | void | |
410 | override_base_with_special(const Symbol* from); | |
411 | ||
bae7f79e | 412 | private: |
14bfc3f5 ILT |
413 | Symbol(const Symbol&); |
414 | Symbol& operator=(const Symbol&); | |
415 | ||
416 | // Symbol name (expected to point into a Stringpool). | |
417 | const char* name_; | |
418 | // Symbol version (expected to point into a Stringpool). This may | |
419 | // be NULL. | |
bae7f79e | 420 | const char* version_; |
ead1e424 ILT |
421 | |
422 | union | |
423 | { | |
424 | // This struct is used if SOURCE_ == FROM_OBJECT. | |
425 | struct | |
426 | { | |
427 | // Object in which symbol is defined, or in which it was first | |
428 | // seen. | |
429 | Object* object; | |
430 | // Section number in object_ in which symbol is defined. | |
16649710 | 431 | unsigned int shndx; |
ead1e424 ILT |
432 | } from_object; |
433 | ||
434 | // This struct is used if SOURCE_ == IN_OUTPUT_DATA. | |
435 | struct | |
436 | { | |
437 | // Output_data in which symbol is defined. Before | |
438 | // Layout::finalize the symbol's value is an offset within the | |
439 | // Output_data. | |
440 | Output_data* output_data; | |
441 | // True if the offset is from the end, false if the offset is | |
442 | // from the beginning. | |
443 | bool offset_is_from_end; | |
444 | } in_output_data; | |
445 | ||
446 | // This struct is used if SOURCE_ == IN_OUTPUT_SEGMENT. | |
447 | struct | |
448 | { | |
449 | // Output_segment in which the symbol is defined. Before | |
450 | // Layout::finalize the symbol's value is an offset. | |
451 | Output_segment* output_segment; | |
452 | // The base to use for the offset before Layout::finalize. | |
453 | Segment_offset_base offset_base; | |
454 | } in_output_segment; | |
455 | } u_; | |
456 | ||
c06b7b0b ILT |
457 | // The index of this symbol in the output file. If the symbol is |
458 | // not going into the output file, this value is -1U. This field | |
459 | // starts as always holding zero. It is set to a non-zero value by | |
460 | // Symbol_table::finalize. | |
461 | unsigned int symtab_index_; | |
462 | ||
463 | // The index of this symbol in the dynamic symbol table. If the | |
464 | // symbol is not going into the dynamic symbol table, this value is | |
465 | // -1U. This field starts as always holding zero. It is set to a | |
466 | // non-zero value during Layout::finalize. | |
467 | unsigned int dynsym_index_; | |
468 | ||
ead1e424 | 469 | // If this symbol has an entry in the GOT section (has_got_offset_ |
c06b7b0b | 470 | // is true), this is the offset from the start of the GOT section. |
ead1e424 | 471 | unsigned int got_offset_; |
c06b7b0b | 472 | |
a3ad94ed ILT |
473 | // If this symbol has an entry in the PLT section (has_plt_offset_ |
474 | // is true), then this is the offset from the start of the PLT | |
475 | // section. | |
476 | unsigned int plt_offset_; | |
477 | ||
14bfc3f5 | 478 | // Symbol type. |
bae7f79e | 479 | elfcpp::STT type_ : 4; |
14bfc3f5 | 480 | // Symbol binding. |
bae7f79e | 481 | elfcpp::STB binding_ : 4; |
14bfc3f5 ILT |
482 | // Symbol visibility. |
483 | elfcpp::STV visibility_ : 2; | |
484 | // Rest of symbol st_other field. | |
ead1e424 ILT |
485 | unsigned int nonvis_ : 6; |
486 | // The type of symbol. | |
f6ce93d6 | 487 | Source source_ : 3; |
14bfc3f5 ILT |
488 | // True if this symbol always requires special target-specific |
489 | // handling. | |
ead1e424 | 490 | bool is_target_special_ : 1; |
14bfc3f5 | 491 | // True if this is the default version of the symbol. |
1564db8d | 492 | bool is_def_ : 1; |
14bfc3f5 ILT |
493 | // True if this symbol really forwards to another symbol. This is |
494 | // used when we discover after the fact that two different entries | |
495 | // in the hash table really refer to the same symbol. This will | |
496 | // never be set for a symbol found in the hash table, but may be set | |
497 | // for a symbol found in the list of symbols attached to an Object. | |
498 | // It forwards to the symbol found in the forwarders_ map of | |
499 | // Symbol_table. | |
1564db8d | 500 | bool is_forwarder_ : 1; |
c06b7b0b ILT |
501 | // True if this symbol needs to be in the dynamic symbol table. |
502 | bool needs_dynsym_entry_ : 1; | |
008db82e ILT |
503 | // True if we've seen this symbol in a regular object. |
504 | bool in_reg_ : 1; | |
1564db8d ILT |
505 | // True if we've seen this symbol in a dynamic object. |
506 | bool in_dyn_ : 1; | |
ead1e424 ILT |
507 | // True if the symbol has an entry in the GOT section. |
508 | bool has_got_offset_ : 1; | |
a3ad94ed ILT |
509 | // True if the symbol has an entry in the PLT section. |
510 | bool has_plt_offset_ : 1; | |
f6ce93d6 ILT |
511 | // True if there is a warning for this symbol. |
512 | bool has_warning_ : 1; | |
bae7f79e ILT |
513 | }; |
514 | ||
14bfc3f5 ILT |
515 | // The parts of a symbol which are size specific. Using a template |
516 | // derived class like this helps us use less space on a 32-bit system. | |
bae7f79e ILT |
517 | |
518 | template<int size> | |
14bfc3f5 ILT |
519 | class Sized_symbol : public Symbol |
520 | { | |
521 | public: | |
1564db8d ILT |
522 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Value_type; |
523 | typedef typename elfcpp::Elf_types<size>::Elf_WXword Size_type; | |
524 | ||
14bfc3f5 ILT |
525 | Sized_symbol() |
526 | { } | |
527 | ||
528 | // Initialize fields from an ELF symbol in OBJECT. | |
529 | template<bool big_endian> | |
530 | void | |
531 | init(const char *name, const char* version, Object* object, | |
532 | const elfcpp::Sym<size, big_endian>&); | |
533 | ||
ead1e424 ILT |
534 | // Initialize fields for an Output_data. |
535 | void | |
536 | init(const char* name, Output_data*, Value_type value, Size_type symsize, | |
537 | elfcpp::STT, elfcpp::STB, elfcpp::STV, unsigned char nonvis, | |
538 | bool offset_is_from_end); | |
539 | ||
540 | // Initialize fields for an Output_segment. | |
541 | void | |
542 | init(const char* name, Output_segment*, Value_type value, Size_type symsize, | |
543 | elfcpp::STT, elfcpp::STB, elfcpp::STV, unsigned char nonvis, | |
544 | Segment_offset_base offset_base); | |
545 | ||
546 | // Initialize fields for a constant. | |
547 | void | |
548 | init(const char* name, Value_type value, Size_type symsize, | |
549 | elfcpp::STT, elfcpp::STB, elfcpp::STV, unsigned char nonvis); | |
550 | ||
1564db8d ILT |
551 | // Override existing symbol. |
552 | template<bool big_endian> | |
553 | void | |
14b31740 ILT |
554 | override(const elfcpp::Sym<size, big_endian>&, Object* object, |
555 | const char* version); | |
1564db8d | 556 | |
86f2e683 ILT |
557 | // Override existing symbol with a special symbol. |
558 | void | |
559 | override_with_special(const Sized_symbol<size>*); | |
560 | ||
1564db8d ILT |
561 | // Return the symbol's value. |
562 | Value_type | |
563 | value() const | |
564 | { return this->value_; } | |
565 | ||
566 | // Return the symbol's size (we can't call this 'size' because that | |
567 | // is a template parameter). | |
568 | Size_type | |
569 | symsize() const | |
ead1e424 ILT |
570 | { return this->symsize_; } |
571 | ||
572 | // Set the symbol size. This is used when resolving common symbols. | |
573 | void | |
574 | set_symsize(Size_type symsize) | |
575 | { this->symsize_ = symsize; } | |
1564db8d | 576 | |
75f65a3e ILT |
577 | // Set the symbol value. This is called when we store the final |
578 | // values of the symbols into the symbol table. | |
579 | void | |
580 | set_value(Value_type value) | |
581 | { this->value_ = value; } | |
582 | ||
14bfc3f5 ILT |
583 | private: |
584 | Sized_symbol(const Sized_symbol&); | |
585 | Sized_symbol& operator=(const Sized_symbol&); | |
586 | ||
ead1e424 ILT |
587 | // Symbol value. Before Layout::finalize this is the offset in the |
588 | // input section. This is set to the final value during | |
589 | // Layout::finalize. | |
1564db8d | 590 | Value_type value_; |
14bfc3f5 | 591 | // Symbol size. |
ead1e424 ILT |
592 | Size_type symsize_; |
593 | }; | |
594 | ||
595 | // A struct describing a symbol defined by the linker, where the value | |
596 | // of the symbol is defined based on an output section. This is used | |
597 | // for symbols defined by the linker, like "_init_array_start". | |
598 | ||
599 | struct Define_symbol_in_section | |
600 | { | |
601 | // The symbol name. | |
602 | const char* name; | |
603 | // The name of the output section with which this symbol should be | |
604 | // associated. If there is no output section with that name, the | |
605 | // symbol will be defined as zero. | |
606 | const char* output_section; | |
607 | // The offset of the symbol within the output section. This is an | |
608 | // offset from the start of the output section, unless start_at_end | |
609 | // is true, in which case this is an offset from the end of the | |
610 | // output section. | |
611 | uint64_t value; | |
612 | // The size of the symbol. | |
613 | uint64_t size; | |
614 | // The symbol type. | |
615 | elfcpp::STT type; | |
616 | // The symbol binding. | |
617 | elfcpp::STB binding; | |
618 | // The symbol visibility. | |
619 | elfcpp::STV visibility; | |
620 | // The rest of the st_other field. | |
621 | unsigned char nonvis; | |
622 | // If true, the value field is an offset from the end of the output | |
623 | // section. | |
624 | bool offset_is_from_end; | |
625 | // If true, this symbol is defined only if we see a reference to it. | |
626 | bool only_if_ref; | |
627 | }; | |
628 | ||
629 | // A struct describing a symbol defined by the linker, where the value | |
630 | // of the symbol is defined based on a segment. This is used for | |
631 | // symbols defined by the linker, like "_end". We describe the | |
632 | // segment with which the symbol should be associated by its | |
633 | // characteristics. If no segment meets these characteristics, the | |
634 | // symbol will be defined as zero. If there is more than one segment | |
635 | // which meets these characteristics, we will use the first one. | |
636 | ||
637 | struct Define_symbol_in_segment | |
638 | { | |
639 | // The symbol name. | |
640 | const char* name; | |
641 | // The segment type where the symbol should be defined, typically | |
642 | // PT_LOAD. | |
643 | elfcpp::PT segment_type; | |
644 | // Bitmask of segment flags which must be set. | |
645 | elfcpp::PF segment_flags_set; | |
646 | // Bitmask of segment flags which must be clear. | |
647 | elfcpp::PF segment_flags_clear; | |
648 | // The offset of the symbol within the segment. The offset is | |
649 | // calculated from the position set by offset_base. | |
650 | uint64_t value; | |
651 | // The size of the symbol. | |
652 | uint64_t size; | |
653 | // The symbol type. | |
654 | elfcpp::STT type; | |
655 | // The symbol binding. | |
656 | elfcpp::STB binding; | |
657 | // The symbol visibility. | |
658 | elfcpp::STV visibility; | |
659 | // The rest of the st_other field. | |
660 | unsigned char nonvis; | |
661 | // The base from which we compute the offset. | |
662 | Symbol::Segment_offset_base offset_base; | |
663 | // If true, this symbol is defined only if we see a reference to it. | |
664 | bool only_if_ref; | |
14bfc3f5 ILT |
665 | }; |
666 | ||
f6ce93d6 ILT |
667 | // This class manages warnings. Warnings are a GNU extension. When |
668 | // we see a section named .gnu.warning.SYM in an object file, and if | |
669 | // we wind using the definition of SYM from that object file, then we | |
670 | // will issue a warning for any relocation against SYM from a | |
671 | // different object file. The text of the warning is the contents of | |
672 | // the section. This is not precisely the definition used by the old | |
673 | // GNU linker; the old GNU linker treated an occurrence of | |
674 | // .gnu.warning.SYM as defining a warning symbol. A warning symbol | |
675 | // would trigger a warning on any reference. However, it was | |
676 | // inconsistent in that a warning in a dynamic object only triggered | |
677 | // if there was no definition in a regular object. This linker is | |
678 | // different in that we only issue a warning if we use the symbol | |
679 | // definition from the same object file as the warning section. | |
680 | ||
681 | class Warnings | |
682 | { | |
683 | public: | |
684 | Warnings() | |
685 | : warnings_() | |
686 | { } | |
687 | ||
688 | // Add a warning for symbol NAME in section SHNDX in object OBJ. | |
689 | void | |
690 | add_warning(Symbol_table* symtab, const char* name, Object* obj, | |
691 | unsigned int shndx); | |
692 | ||
693 | // For each symbol for which we should give a warning, make a note | |
694 | // on the symbol. | |
695 | void | |
696 | note_warnings(Symbol_table* symtab); | |
697 | ||
698 | // Issue a warning for a reference to SYM at LOCATION. | |
699 | void | |
c06b7b0b | 700 | issue_warning(const Symbol* sym, const std::string& location) const; |
f6ce93d6 ILT |
701 | |
702 | private: | |
703 | Warnings(const Warnings&); | |
704 | Warnings& operator=(const Warnings&); | |
705 | ||
706 | // What we need to know to get the warning text. | |
707 | struct Warning_location | |
708 | { | |
709 | // The object the warning is in. | |
710 | Object* object; | |
711 | // The index of the warning section. | |
712 | unsigned int shndx; | |
713 | // The warning text if we have already loaded it. | |
714 | std::string text; | |
715 | ||
716 | Warning_location() | |
717 | : object(NULL), shndx(0), text() | |
718 | { } | |
719 | ||
720 | void | |
721 | set(Object* o, unsigned int s) | |
722 | { | |
723 | this->object = o; | |
724 | this->shndx = s; | |
725 | } | |
726 | ||
727 | void | |
728 | set_text(const char* t, off_t l) | |
729 | { this->text.assign(t, l); } | |
730 | }; | |
731 | ||
732 | // A mapping from warning symbol names (canonicalized in | |
733 | // Symbol_table's namepool_ field) to | |
734 | typedef Unordered_map<const char*, Warning_location> Warning_table; | |
735 | ||
736 | Warning_table warnings_; | |
737 | }; | |
738 | ||
14bfc3f5 ILT |
739 | // The main linker symbol table. |
740 | ||
bae7f79e ILT |
741 | class Symbol_table |
742 | { | |
743 | public: | |
744 | Symbol_table(); | |
745 | ||
1564db8d | 746 | ~Symbol_table(); |
bae7f79e | 747 | |
dbe717ef | 748 | // Add COUNT external symbols from the relocatable object RELOBJ to |
f6ce93d6 ILT |
749 | // the symbol table. SYMS is the symbols, SYM_NAMES is their names, |
750 | // SYM_NAME_SIZE is the size of SYM_NAMES. This sets SYMPOINTERS to | |
751 | // point to the symbols in the symbol table. | |
14bfc3f5 ILT |
752 | template<int size, bool big_endian> |
753 | void | |
dbe717ef ILT |
754 | add_from_relobj(Sized_relobj<size, big_endian>* relobj, |
755 | const unsigned char* syms, size_t count, | |
756 | const char* sym_names, size_t sym_name_size, | |
14bfc3f5 ILT |
757 | Symbol** sympointers); |
758 | ||
dbe717ef ILT |
759 | // Add COUNT dynamic symbols from the dynamic object DYNOBJ to the |
760 | // symbol table. SYMS is the symbols. SYM_NAMES is their names. | |
761 | // SYM_NAME_SIZE is the size of SYM_NAMES. The other parameters are | |
762 | // symbol version data. | |
763 | template<int size, bool big_endian> | |
764 | void | |
765 | add_from_dynobj(Sized_dynobj<size, big_endian>* dynobj, | |
766 | const unsigned char* syms, size_t count, | |
767 | const char* sym_names, size_t sym_name_size, | |
768 | const unsigned char* versym, size_t versym_size, | |
769 | const std::vector<const char*>*); | |
770 | ||
ead1e424 ILT |
771 | // Define a special symbol based on an Output_data. It is a |
772 | // multiple definition error if this symbol is already defined. | |
14b31740 ILT |
773 | Symbol* |
774 | define_in_output_data(const Target*, const char* name, const char* version, | |
775 | Output_data*, uint64_t value, uint64_t symsize, | |
ead1e424 ILT |
776 | elfcpp::STT type, elfcpp::STB binding, |
777 | elfcpp::STV visibility, unsigned char nonvis, | |
778 | bool offset_is_from_end, bool only_if_ref); | |
779 | ||
780 | // Define a special symbol based on an Output_segment. It is a | |
781 | // multiple definition error if this symbol is already defined. | |
14b31740 ILT |
782 | Symbol* |
783 | define_in_output_segment(const Target*, const char* name, | |
784 | const char* version, Output_segment*, | |
ead1e424 ILT |
785 | uint64_t value, uint64_t symsize, |
786 | elfcpp::STT type, elfcpp::STB binding, | |
787 | elfcpp::STV visibility, unsigned char nonvis, | |
788 | Symbol::Segment_offset_base, bool only_if_ref); | |
789 | ||
790 | // Define a special symbol with a constant value. It is a multiple | |
791 | // definition error if this symbol is already defined. | |
14b31740 ILT |
792 | Symbol* |
793 | define_as_constant(const Target*, const char* name, const char* version, | |
794 | uint64_t value, uint64_t symsize, elfcpp::STT type, | |
795 | elfcpp::STB binding, elfcpp::STV visibility, | |
796 | unsigned char nonvis, bool only_if_ref); | |
ead1e424 ILT |
797 | |
798 | // Define a set of symbols in output sections. | |
799 | void | |
14b31740 | 800 | define_symbols(const Layout*, const Target*, int count, |
ead1e424 ILT |
801 | const Define_symbol_in_section*); |
802 | ||
803 | // Define a set of symbols in output segments. | |
804 | void | |
14b31740 | 805 | define_symbols(const Layout*, const Target*, int count, |
ead1e424 ILT |
806 | const Define_symbol_in_segment*); |
807 | ||
61ba1cf9 ILT |
808 | // Look up a symbol. |
809 | Symbol* | |
810 | lookup(const char*, const char* version = NULL) const; | |
811 | ||
14bfc3f5 | 812 | // Return the real symbol associated with the forwarder symbol FROM. |
bae7f79e | 813 | Symbol* |
c06b7b0b | 814 | resolve_forwards(const Symbol* from) const; |
bae7f79e | 815 | |
a3ad94ed | 816 | // Return the bitsize (32 or 64) of the symbols in the table. |
14bfc3f5 ILT |
817 | int |
818 | get_size() const | |
819 | { return this->size_; } | |
bae7f79e | 820 | |
1564db8d ILT |
821 | // Return the sized version of a symbol in this table. |
822 | template<int size> | |
823 | Sized_symbol<size>* | |
5482377d | 824 | get_sized_symbol(Symbol* ACCEPT_SIZE) const; |
1564db8d ILT |
825 | |
826 | template<int size> | |
827 | const Sized_symbol<size>* | |
5482377d | 828 | get_sized_symbol(const Symbol* ACCEPT_SIZE) const; |
54dc6425 | 829 | |
ead1e424 ILT |
830 | // Return the count of undefined symbols seen. |
831 | int | |
832 | saw_undefined() const | |
833 | { return this->saw_undefined_; } | |
834 | ||
835 | // Allocate the common symbols | |
836 | void | |
837 | allocate_commons(const General_options&, Layout*); | |
838 | ||
f6ce93d6 ILT |
839 | // Add a warning for symbol NAME in section SHNDX in object OBJ. |
840 | void | |
841 | add_warning(const char* name, Object* obj, unsigned int shndx) | |
842 | { this->warnings_.add_warning(this, name, obj, shndx); } | |
843 | ||
844 | // Canonicalize a symbol name for use in the hash table. | |
845 | const char* | |
846 | canonicalize_name(const char* name) | |
f0641a0b | 847 | { return this->namepool_.add(name, NULL); } |
f6ce93d6 ILT |
848 | |
849 | // Possibly issue a warning for a reference to SYM at LOCATION which | |
850 | // is in OBJ. | |
851 | void | |
c06b7b0b | 852 | issue_warning(const Symbol* sym, const std::string& location) const |
f6ce93d6 ILT |
853 | { this->warnings_.issue_warning(sym, location); } |
854 | ||
a3ad94ed ILT |
855 | // Set the dynamic symbol indexes. INDEX is the index of the first |
856 | // global dynamic symbol. Pointers to the symbols are stored into | |
857 | // the vector. The names are stored into the Stringpool. This | |
858 | // returns an updated dynamic symbol index. | |
859 | unsigned int | |
14b31740 ILT |
860 | set_dynsym_indexes(const General_options*, const Target*, unsigned int index, |
861 | std::vector<Symbol*>*, Stringpool*, Versions*); | |
a3ad94ed | 862 | |
75f65a3e | 863 | // Finalize the symbol table after we have set the final addresses |
c06b7b0b ILT |
864 | // of all the input sections. This sets the final symbol indexes, |
865 | // values and adds the names to *POOL. INDEX is the index of the | |
16649710 ILT |
866 | // first global symbol. OFF is the file offset of the global symbol |
867 | // table, DYNOFF is the offset of the globals in the dynamic symbol | |
868 | // table, DYN_GLOBAL_INDEX is the index of the first global dynamic | |
869 | // symbol, and DYNCOUNT is the number of global dynamic symbols. | |
870 | // This records the parameters, and returns the new file offset. | |
75f65a3e | 871 | off_t |
16649710 ILT |
872 | finalize(unsigned int index, off_t off, off_t dynoff, |
873 | size_t dyn_global_index, size_t dyncount, Stringpool* pool); | |
1564db8d | 874 | |
61ba1cf9 ILT |
875 | // Write out the global symbols. |
876 | void | |
16649710 ILT |
877 | write_globals(const Target*, const Stringpool*, const Stringpool*, |
878 | Output_file*) const; | |
61ba1cf9 | 879 | |
a3ad94ed ILT |
880 | // Write out a section symbol. Return the updated offset. |
881 | void | |
882 | write_section_symbol(const Target*, const Output_section*, Output_file*, | |
883 | off_t) const; | |
884 | ||
bae7f79e ILT |
885 | private: |
886 | Symbol_table(const Symbol_table&); | |
887 | Symbol_table& operator=(const Symbol_table&); | |
888 | ||
a3ad94ed | 889 | // Set the size (32 or 64) of the symbols in the table. |
14bfc3f5 ILT |
890 | void |
891 | set_size(int size) | |
892 | { this->size_ = size; } | |
893 | ||
894 | // Make FROM a forwarder symbol to TO. | |
895 | void | |
896 | make_forwarder(Symbol* from, Symbol* to); | |
897 | ||
898 | // Add a symbol. | |
899 | template<int size, bool big_endian> | |
900 | Symbol* | |
f0641a0b ILT |
901 | add_from_object(Object*, const char *name, Stringpool::Key name_key, |
902 | const char *version, Stringpool::Key version_key, | |
903 | bool def, const elfcpp::Sym<size, big_endian>& sym); | |
14bfc3f5 ILT |
904 | |
905 | // Resolve symbols. | |
906 | template<int size, bool big_endian> | |
907 | static void | |
1564db8d ILT |
908 | resolve(Sized_symbol<size>* to, |
909 | const elfcpp::Sym<size, big_endian>& sym, | |
14b31740 | 910 | Object*, const char* version); |
14bfc3f5 | 911 | |
1564db8d | 912 | template<int size, bool big_endian> |
14bfc3f5 | 913 | static void |
14b31740 ILT |
914 | resolve(Sized_symbol<size>* to, const Sized_symbol<size>* from, |
915 | const char* version ACCEPT_SIZE_ENDIAN); | |
916 | ||
86f2e683 ILT |
917 | // Whether we should override a symbol, based on flags in |
918 | // resolve.cc. | |
919 | static bool | |
920 | should_override(const Symbol*, unsigned int, bool*); | |
921 | ||
922 | // Whether we should override a symbol with a special symbol which | |
923 | // is automatically defined by the linker. | |
924 | static bool | |
925 | should_override_with_special(const Symbol*); | |
926 | ||
14b31740 ILT |
927 | // Define a special symbol. |
928 | template<int size, bool big_endian> | |
929 | Sized_symbol<size>* | |
306d9ef0 ILT |
930 | define_special_symbol(const Target* target, const char** pname, |
931 | const char** pversion, bool only_if_ref, | |
86f2e683 | 932 | Sized_symbol<size>** poldsym ACCEPT_SIZE_ENDIAN); |
14bfc3f5 | 933 | |
ead1e424 ILT |
934 | // Define a symbol in an Output_data, sized version. |
935 | template<int size> | |
14b31740 ILT |
936 | Sized_symbol<size>* |
937 | do_define_in_output_data(const Target*, const char* name, | |
938 | const char* version, Output_data*, | |
ead1e424 ILT |
939 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
940 | typename elfcpp::Elf_types<size>::Elf_WXword ssize, | |
941 | elfcpp::STT type, elfcpp::STB binding, | |
942 | elfcpp::STV visibility, unsigned char nonvis, | |
943 | bool offset_is_from_end, bool only_if_ref); | |
944 | ||
945 | // Define a symbol in an Output_segment, sized version. | |
946 | template<int size> | |
14b31740 | 947 | Sized_symbol<size>* |
ead1e424 | 948 | do_define_in_output_segment( |
14b31740 | 949 | const Target*, const char* name, const char* version, Output_segment* os, |
ead1e424 ILT |
950 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
951 | typename elfcpp::Elf_types<size>::Elf_WXword ssize, | |
952 | elfcpp::STT type, elfcpp::STB binding, | |
953 | elfcpp::STV visibility, unsigned char nonvis, | |
954 | Symbol::Segment_offset_base offset_base, bool only_if_ref); | |
955 | ||
956 | // Define a symbol as a constant, sized version. | |
957 | template<int size> | |
14b31740 | 958 | Sized_symbol<size>* |
ead1e424 | 959 | do_define_as_constant( |
14b31740 | 960 | const Target*, const char* name, const char* version, |
ead1e424 ILT |
961 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
962 | typename elfcpp::Elf_types<size>::Elf_WXword ssize, | |
963 | elfcpp::STT type, elfcpp::STB binding, | |
964 | elfcpp::STV visibility, unsigned char nonvis, | |
965 | bool only_if_ref); | |
966 | ||
967 | // Allocate the common symbols, sized version. | |
968 | template<int size> | |
969 | void | |
970 | do_allocate_commons(const General_options&, Layout*); | |
971 | ||
75f65a3e ILT |
972 | // Finalize symbols specialized for size. |
973 | template<int size> | |
974 | off_t | |
c06b7b0b | 975 | sized_finalize(unsigned int, off_t, Stringpool*); |
75f65a3e | 976 | |
61ba1cf9 ILT |
977 | // Write globals specialized for size and endianness. |
978 | template<int size, bool big_endian> | |
979 | void | |
16649710 ILT |
980 | sized_write_globals(const Target*, const Stringpool*, const Stringpool*, |
981 | Output_file*) const; | |
982 | ||
983 | // Write out a symbol to P. | |
984 | template<int size, bool big_endian> | |
985 | void | |
986 | sized_write_symbol(Sized_symbol<size>*, unsigned int shndx, | |
6a469986 ILT |
987 | const Stringpool*, unsigned char* p |
988 | ACCEPT_SIZE_ENDIAN) const; | |
61ba1cf9 | 989 | |
a3ad94ed ILT |
990 | // Write out a section symbol, specialized for size and endianness. |
991 | template<int size, bool big_endian> | |
992 | void | |
993 | sized_write_section_symbol(const Output_section*, Output_file*, off_t) const; | |
994 | ||
54dc6425 ILT |
995 | // The type of the symbol hash table. |
996 | ||
f0641a0b | 997 | typedef std::pair<Stringpool::Key, Stringpool::Key> Symbol_table_key; |
14bfc3f5 ILT |
998 | |
999 | struct Symbol_table_hash | |
1000 | { | |
1001 | size_t | |
1002 | operator()(const Symbol_table_key&) const; | |
1003 | }; | |
1004 | ||
1005 | struct Symbol_table_eq | |
1006 | { | |
1007 | bool | |
1008 | operator()(const Symbol_table_key&, const Symbol_table_key&) const; | |
1009 | }; | |
1010 | ||
1011 | typedef Unordered_map<Symbol_table_key, Symbol*, Symbol_table_hash, | |
1012 | Symbol_table_eq> Symbol_table_type; | |
1013 | ||
ead1e424 ILT |
1014 | // The type of the list of common symbols. |
1015 | ||
1016 | typedef std::vector<Symbol*> Commons_type; | |
1017 | ||
14bfc3f5 ILT |
1018 | // The size of the symbols in the symbol table (32 or 64). |
1019 | int size_; | |
1020 | ||
ead1e424 ILT |
1021 | // We increment this every time we see a new undefined symbol, for |
1022 | // use in archive groups. | |
1023 | int saw_undefined_; | |
1024 | ||
c06b7b0b ILT |
1025 | // The index of the first global symbol in the output file. |
1026 | unsigned int first_global_index_; | |
1027 | ||
75f65a3e ILT |
1028 | // The file offset within the output symtab section where we should |
1029 | // write the table. | |
1030 | off_t offset_; | |
1031 | ||
61ba1cf9 ILT |
1032 | // The number of global symbols we want to write out. |
1033 | size_t output_count_; | |
1034 | ||
16649710 ILT |
1035 | // The file offset of the global dynamic symbols, or 0 if none. |
1036 | off_t dynamic_offset_; | |
1037 | ||
1038 | // The index of the first global dynamic symbol. | |
1039 | unsigned int first_dynamic_global_index_; | |
1040 | ||
1041 | // The number of global dynamic symbols, or 0 if none. | |
1042 | off_t dynamic_count_; | |
1043 | ||
54dc6425 | 1044 | // The symbol hash table. |
14bfc3f5 ILT |
1045 | Symbol_table_type table_; |
1046 | ||
54dc6425 ILT |
1047 | // A pool of symbol names. This is used for all global symbols. |
1048 | // Entries in the hash table point into this pool. | |
14bfc3f5 | 1049 | Stringpool namepool_; |
bae7f79e | 1050 | |
14bfc3f5 | 1051 | // Forwarding symbols. |
c06b7b0b | 1052 | Unordered_map<const Symbol*, Symbol*> forwarders_; |
ead1e424 ILT |
1053 | |
1054 | // We don't expect there to be very many common symbols, so we keep | |
1055 | // a list of them. When we find a common symbol we add it to this | |
1056 | // list. It is possible that by the time we process the list the | |
1057 | // symbol is no longer a common symbol. It may also have become a | |
1058 | // forwarder. | |
1059 | Commons_type commons_; | |
f6ce93d6 ILT |
1060 | |
1061 | // Manage symbol warnings. | |
1062 | Warnings warnings_; | |
bae7f79e ILT |
1063 | }; |
1064 | ||
1564db8d ILT |
1065 | // We inline get_sized_symbol for efficiency. |
1066 | ||
1067 | template<int size> | |
1068 | Sized_symbol<size>* | |
5482377d | 1069 | Symbol_table::get_sized_symbol(Symbol* sym ACCEPT_SIZE) const |
1564db8d | 1070 | { |
a3ad94ed | 1071 | gold_assert(size == this->get_size()); |
1564db8d ILT |
1072 | return static_cast<Sized_symbol<size>*>(sym); |
1073 | } | |
1074 | ||
1075 | template<int size> | |
1076 | const Sized_symbol<size>* | |
5482377d | 1077 | Symbol_table::get_sized_symbol(const Symbol* sym ACCEPT_SIZE) const |
1564db8d | 1078 | { |
a3ad94ed | 1079 | gold_assert(size == this->get_size()); |
1564db8d ILT |
1080 | return static_cast<const Sized_symbol<size>*>(sym); |
1081 | } | |
1082 | ||
bae7f79e ILT |
1083 | } // End namespace gold. |
1084 | ||
1085 | #endif // !defined(GOLD_SYMTAB_H) |