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a2fb1b05 ILT |
1 | // output.h -- manage the output file for gold -*- C++ -*- |
2 | ||
e29e076a | 3 | // Copyright 2006, 2007, 2008, 2009 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 | ||
a2fb1b05 ILT |
23 | #ifndef GOLD_OUTPUT_H |
24 | #define GOLD_OUTPUT_H | |
25 | ||
26 | #include <list> | |
ead1e424 | 27 | #include <vector> |
a2fb1b05 ILT |
28 | |
29 | #include "elfcpp.h" | |
7d9e3d98 | 30 | #include "mapfile.h" |
54dc6425 | 31 | #include "layout.h" |
c06b7b0b | 32 | #include "reloc-types.h" |
a2fb1b05 ILT |
33 | |
34 | namespace gold | |
35 | { | |
36 | ||
61ba1cf9 | 37 | class General_options; |
a2fb1b05 | 38 | class Object; |
a3ad94ed | 39 | class Symbol; |
a2fb1b05 | 40 | class Output_file; |
c0a62865 | 41 | class Output_merge_base; |
c06b7b0b | 42 | class Output_section; |
6a74a719 | 43 | class Relocatable_relocs; |
a3ad94ed | 44 | class Target; |
54dc6425 ILT |
45 | template<int size, bool big_endian> |
46 | class Sized_target; | |
c06b7b0b ILT |
47 | template<int size, bool big_endian> |
48 | class Sized_relobj; | |
54dc6425 | 49 | |
c0a62865 DK |
50 | // This class specifies an input section. It is used as a key type |
51 | // for maps. | |
52 | ||
53 | class Input_section_specifier | |
54 | { | |
55 | public: | |
56 | Input_section_specifier(const Relobj* relobj, unsigned int shndx) | |
57 | : relobj_(relobj), shndx_(shndx) | |
58 | { } | |
59 | ||
60 | // Return Relobj of this. | |
61 | const Relobj* | |
62 | relobj() const | |
63 | { return this->relobj_; } | |
64 | ||
65 | // Return section index of this. | |
66 | unsigned int | |
67 | shndx() const | |
68 | { return this->shndx_; } | |
69 | ||
70 | // Whether this equals to another specifier ISS. | |
71 | bool | |
72 | eq(const Input_section_specifier& iss) const | |
73 | { return this->relobj_ == iss.relobj_ && this->shndx_ == iss.shndx_; } | |
74 | ||
75 | // Compute a hash value of this. | |
76 | size_t | |
77 | hash_value() const | |
78 | { return this->string_hash(this->relobj_->name().c_str()) ^ this->shndx_; } | |
79 | ||
80 | // Functors for containers. | |
81 | struct equal_to | |
82 | { | |
83 | bool | |
84 | operator()(const Input_section_specifier& iss1, | |
85 | const Input_section_specifier& iss2) const | |
86 | { return iss1.eq(iss2); } | |
87 | }; | |
88 | ||
89 | struct hash | |
90 | { | |
91 | size_t | |
92 | operator()(const Input_section_specifier& iss) const | |
93 | { return iss.hash_value(); } | |
94 | }; | |
95 | ||
96 | private: | |
97 | // For portability, we use our own string hash function instead of assuming | |
98 | // __gnu_cxx::hash or std::tr1::hash is available. This is the same hash | |
99 | // function used in Stringpool_template::string_hash. | |
100 | static size_t | |
101 | string_hash(const char* s) | |
102 | { | |
103 | size_t h = 5381; | |
104 | while (*s != '\0') | |
105 | h = h * 33 + *s++; | |
106 | return h; | |
107 | } | |
108 | ||
109 | // An object. | |
110 | const Relobj* relobj_; | |
111 | // A section index. | |
112 | unsigned int shndx_; | |
113 | }; | |
114 | ||
54dc6425 | 115 | // An abtract class for data which has to go into the output file. |
a2fb1b05 ILT |
116 | |
117 | class Output_data | |
118 | { | |
119 | public: | |
27bc2bce ILT |
120 | explicit Output_data() |
121 | : address_(0), data_size_(0), offset_(-1), | |
122 | is_address_valid_(false), is_data_size_valid_(false), | |
20e6d0d6 | 123 | is_offset_valid_(false), is_data_size_fixed_(false), |
4f4c5f80 | 124 | dynamic_reloc_count_(0) |
a2fb1b05 ILT |
125 | { } |
126 | ||
127 | virtual | |
128 | ~Output_data(); | |
129 | ||
27bc2bce ILT |
130 | // Return the address. For allocated sections, this is only valid |
131 | // after Layout::finalize is finished. | |
75f65a3e ILT |
132 | uint64_t |
133 | address() const | |
27bc2bce ILT |
134 | { |
135 | gold_assert(this->is_address_valid_); | |
136 | return this->address_; | |
137 | } | |
75f65a3e | 138 | |
27bc2bce ILT |
139 | // Return the size of the data. For allocated sections, this must |
140 | // be valid after Layout::finalize calls set_address, but need not | |
141 | // be valid before then. | |
a2fb1b05 | 142 | off_t |
75f65a3e | 143 | data_size() const |
27bc2bce ILT |
144 | { |
145 | gold_assert(this->is_data_size_valid_); | |
146 | return this->data_size_; | |
147 | } | |
75f65a3e | 148 | |
20e6d0d6 DK |
149 | // Return true if data size is fixed. |
150 | bool | |
151 | is_data_size_fixed() const | |
152 | { return this->is_data_size_fixed_; } | |
153 | ||
ead1e424 | 154 | // Return the file offset. This is only valid after |
27bc2bce ILT |
155 | // Layout::finalize is finished. For some non-allocated sections, |
156 | // it may not be valid until near the end of the link. | |
75f65a3e ILT |
157 | off_t |
158 | offset() const | |
27bc2bce ILT |
159 | { |
160 | gold_assert(this->is_offset_valid_); | |
161 | return this->offset_; | |
162 | } | |
75f65a3e | 163 | |
a445fddf ILT |
164 | // Reset the address and file offset. This essentially disables the |
165 | // sanity testing about duplicate and unknown settings. | |
166 | void | |
167 | reset_address_and_file_offset() | |
168 | { | |
169 | this->is_address_valid_ = false; | |
170 | this->is_offset_valid_ = false; | |
20e6d0d6 DK |
171 | if (!this->is_data_size_fixed_) |
172 | this->is_data_size_valid_ = false; | |
a445fddf ILT |
173 | this->do_reset_address_and_file_offset(); |
174 | } | |
175 | ||
20e6d0d6 DK |
176 | // Return true if address and file offset already have reset values. In |
177 | // other words, calling reset_address_and_file_offset will not change them. | |
178 | bool | |
179 | address_and_file_offset_have_reset_values() const | |
180 | { return this->do_address_and_file_offset_have_reset_values(); } | |
181 | ||
75f65a3e ILT |
182 | // Return the required alignment. |
183 | uint64_t | |
184 | addralign() const | |
185 | { return this->do_addralign(); } | |
186 | ||
a445fddf ILT |
187 | // Return whether this has a load address. |
188 | bool | |
189 | has_load_address() const | |
190 | { return this->do_has_load_address(); } | |
191 | ||
192 | // Return the load address. | |
193 | uint64_t | |
194 | load_address() const | |
195 | { return this->do_load_address(); } | |
196 | ||
75f65a3e ILT |
197 | // Return whether this is an Output_section. |
198 | bool | |
199 | is_section() const | |
200 | { return this->do_is_section(); } | |
201 | ||
202 | // Return whether this is an Output_section of the specified type. | |
203 | bool | |
204 | is_section_type(elfcpp::Elf_Word stt) const | |
205 | { return this->do_is_section_type(stt); } | |
206 | ||
207 | // Return whether this is an Output_section with the specified flag | |
208 | // set. | |
209 | bool | |
210 | is_section_flag_set(elfcpp::Elf_Xword shf) const | |
211 | { return this->do_is_section_flag_set(shf); } | |
212 | ||
77e65537 ILT |
213 | // Return the output section that this goes in, if there is one. |
214 | Output_section* | |
215 | output_section() | |
216 | { return this->do_output_section(); } | |
217 | ||
ead1e424 ILT |
218 | // Return the output section index, if there is an output section. |
219 | unsigned int | |
220 | out_shndx() const | |
221 | { return this->do_out_shndx(); } | |
222 | ||
223 | // Set the output section index, if this is an output section. | |
224 | void | |
225 | set_out_shndx(unsigned int shndx) | |
226 | { this->do_set_out_shndx(shndx); } | |
227 | ||
27bc2bce ILT |
228 | // Set the address and file offset of this data, and finalize the |
229 | // size of the data. This is called during Layout::finalize for | |
230 | // allocated sections. | |
75f65a3e | 231 | void |
27bc2bce ILT |
232 | set_address_and_file_offset(uint64_t addr, off_t off) |
233 | { | |
234 | this->set_address(addr); | |
235 | this->set_file_offset(off); | |
236 | this->finalize_data_size(); | |
237 | } | |
238 | ||
239 | // Set the address. | |
240 | void | |
241 | set_address(uint64_t addr) | |
242 | { | |
243 | gold_assert(!this->is_address_valid_); | |
244 | this->address_ = addr; | |
245 | this->is_address_valid_ = true; | |
246 | } | |
247 | ||
248 | // Set the file offset. | |
249 | void | |
250 | set_file_offset(off_t off) | |
251 | { | |
252 | gold_assert(!this->is_offset_valid_); | |
253 | this->offset_ = off; | |
254 | this->is_offset_valid_ = true; | |
255 | } | |
256 | ||
257 | // Finalize the data size. | |
258 | void | |
259 | finalize_data_size() | |
260 | { | |
261 | if (!this->is_data_size_valid_) | |
262 | { | |
263 | // Tell the child class to set the data size. | |
264 | this->set_final_data_size(); | |
265 | gold_assert(this->is_data_size_valid_); | |
266 | } | |
267 | } | |
75f65a3e | 268 | |
7bf1f802 ILT |
269 | // Set the TLS offset. Called only for SHT_TLS sections. |
270 | void | |
271 | set_tls_offset(uint64_t tls_base) | |
272 | { this->do_set_tls_offset(tls_base); } | |
273 | ||
274 | // Return the TLS offset, relative to the base of the TLS segment. | |
275 | // Valid only for SHT_TLS sections. | |
276 | uint64_t | |
277 | tls_offset() const | |
278 | { return this->do_tls_offset(); } | |
279 | ||
ead1e424 ILT |
280 | // Write the data to the output file. This is called after |
281 | // Layout::finalize is complete. | |
75f65a3e ILT |
282 | void |
283 | write(Output_file* file) | |
284 | { this->do_write(file); } | |
a2fb1b05 | 285 | |
27bc2bce ILT |
286 | // This is called by Layout::finalize to note that the sizes of |
287 | // allocated sections must now be fixed. | |
a3ad94ed ILT |
288 | static void |
289 | layout_complete() | |
27bc2bce | 290 | { Output_data::allocated_sizes_are_fixed = true; } |
a3ad94ed | 291 | |
730cdc88 ILT |
292 | // Used to check that layout has been done. |
293 | static bool | |
294 | is_layout_complete() | |
27bc2bce | 295 | { return Output_data::allocated_sizes_are_fixed; } |
730cdc88 | 296 | |
4f4c5f80 ILT |
297 | // Count the number of dynamic relocations applied to this section. |
298 | void | |
299 | add_dynamic_reloc() | |
300 | { ++this->dynamic_reloc_count_; } | |
301 | ||
302 | // Return the number of dynamic relocations applied to this section. | |
303 | unsigned int | |
304 | dynamic_reloc_count() const | |
305 | { return this->dynamic_reloc_count_; } | |
306 | ||
a9a60db6 ILT |
307 | // Whether the address is valid. |
308 | bool | |
309 | is_address_valid() const | |
310 | { return this->is_address_valid_; } | |
311 | ||
312 | // Whether the file offset is valid. | |
313 | bool | |
314 | is_offset_valid() const | |
315 | { return this->is_offset_valid_; } | |
316 | ||
317 | // Whether the data size is valid. | |
318 | bool | |
319 | is_data_size_valid() const | |
320 | { return this->is_data_size_valid_; } | |
321 | ||
7d9e3d98 ILT |
322 | // Print information to the map file. |
323 | void | |
324 | print_to_mapfile(Mapfile* mapfile) const | |
325 | { return this->do_print_to_mapfile(mapfile); } | |
326 | ||
75f65a3e ILT |
327 | protected: |
328 | // Functions that child classes may or in some cases must implement. | |
329 | ||
330 | // Write the data to the output file. | |
a2fb1b05 | 331 | virtual void |
75f65a3e ILT |
332 | do_write(Output_file*) = 0; |
333 | ||
334 | // Return the required alignment. | |
335 | virtual uint64_t | |
336 | do_addralign() const = 0; | |
337 | ||
a445fddf ILT |
338 | // Return whether this has a load address. |
339 | virtual bool | |
340 | do_has_load_address() const | |
341 | { return false; } | |
342 | ||
343 | // Return the load address. | |
344 | virtual uint64_t | |
345 | do_load_address() const | |
346 | { gold_unreachable(); } | |
347 | ||
75f65a3e ILT |
348 | // Return whether this is an Output_section. |
349 | virtual bool | |
350 | do_is_section() const | |
351 | { return false; } | |
a2fb1b05 | 352 | |
54dc6425 | 353 | // Return whether this is an Output_section of the specified type. |
75f65a3e | 354 | // This only needs to be implement by Output_section. |
54dc6425 | 355 | virtual bool |
75f65a3e | 356 | do_is_section_type(elfcpp::Elf_Word) const |
54dc6425 ILT |
357 | { return false; } |
358 | ||
75f65a3e ILT |
359 | // Return whether this is an Output_section with the specific flag |
360 | // set. This only needs to be implemented by Output_section. | |
54dc6425 | 361 | virtual bool |
75f65a3e | 362 | do_is_section_flag_set(elfcpp::Elf_Xword) const |
54dc6425 ILT |
363 | { return false; } |
364 | ||
77e65537 ILT |
365 | // Return the output section, if there is one. |
366 | virtual Output_section* | |
367 | do_output_section() | |
368 | { return NULL; } | |
369 | ||
ead1e424 ILT |
370 | // Return the output section index, if there is an output section. |
371 | virtual unsigned int | |
372 | do_out_shndx() const | |
a3ad94ed | 373 | { gold_unreachable(); } |
ead1e424 ILT |
374 | |
375 | // Set the output section index, if this is an output section. | |
376 | virtual void | |
377 | do_set_out_shndx(unsigned int) | |
a3ad94ed | 378 | { gold_unreachable(); } |
ead1e424 | 379 | |
27bc2bce ILT |
380 | // This is a hook for derived classes to set the data size. This is |
381 | // called by finalize_data_size, normally called during | |
382 | // Layout::finalize, when the section address is set. | |
75f65a3e | 383 | virtual void |
27bc2bce ILT |
384 | set_final_data_size() |
385 | { gold_unreachable(); } | |
75f65a3e | 386 | |
a445fddf ILT |
387 | // A hook for resetting the address and file offset. |
388 | virtual void | |
389 | do_reset_address_and_file_offset() | |
390 | { } | |
391 | ||
20e6d0d6 DK |
392 | // Return true if address and file offset already have reset values. In |
393 | // other words, calling reset_address_and_file_offset will not change them. | |
394 | // A child class overriding do_reset_address_and_file_offset may need to | |
395 | // also override this. | |
396 | virtual bool | |
397 | do_address_and_file_offset_have_reset_values() const | |
398 | { return !this->is_address_valid_ && !this->is_offset_valid_; } | |
399 | ||
7bf1f802 ILT |
400 | // Set the TLS offset. Called only for SHT_TLS sections. |
401 | virtual void | |
402 | do_set_tls_offset(uint64_t) | |
403 | { gold_unreachable(); } | |
404 | ||
405 | // Return the TLS offset, relative to the base of the TLS segment. | |
406 | // Valid only for SHT_TLS sections. | |
407 | virtual uint64_t | |
408 | do_tls_offset() const | |
409 | { gold_unreachable(); } | |
410 | ||
7d9e3d98 ILT |
411 | // Print to the map file. This only needs to be implemented by |
412 | // classes which may appear in a PT_LOAD segment. | |
413 | virtual void | |
414 | do_print_to_mapfile(Mapfile*) const | |
415 | { gold_unreachable(); } | |
416 | ||
75f65a3e ILT |
417 | // Functions that child classes may call. |
418 | ||
9c547ec3 ILT |
419 | // Reset the address. The Output_section class needs this when an |
420 | // SHF_ALLOC input section is added to an output section which was | |
421 | // formerly not SHF_ALLOC. | |
422 | void | |
423 | mark_address_invalid() | |
424 | { this->is_address_valid_ = false; } | |
425 | ||
a2fb1b05 ILT |
426 | // Set the size of the data. |
427 | void | |
75f65a3e | 428 | set_data_size(off_t data_size) |
a3ad94ed | 429 | { |
20e6d0d6 DK |
430 | gold_assert(!this->is_data_size_valid_ |
431 | && !this->is_data_size_fixed_); | |
27bc2bce ILT |
432 | this->data_size_ = data_size; |
433 | this->is_data_size_valid_ = true; | |
434 | } | |
435 | ||
20e6d0d6 DK |
436 | // Fix the data size. Once it is fixed, it cannot be changed |
437 | // and the data size remains always valid. | |
438 | void | |
439 | fix_data_size() | |
440 | { | |
441 | gold_assert(this->is_data_size_valid_); | |
442 | this->is_data_size_fixed_ = true; | |
443 | } | |
444 | ||
27bc2bce ILT |
445 | // Get the current data size--this is for the convenience of |
446 | // sections which build up their size over time. | |
447 | off_t | |
448 | current_data_size_for_child() const | |
449 | { return this->data_size_; } | |
450 | ||
451 | // Set the current data size--this is for the convenience of | |
452 | // sections which build up their size over time. | |
453 | void | |
454 | set_current_data_size_for_child(off_t data_size) | |
455 | { | |
456 | gold_assert(!this->is_data_size_valid_); | |
a3ad94ed ILT |
457 | this->data_size_ = data_size; |
458 | } | |
75f65a3e | 459 | |
730cdc88 ILT |
460 | // Return default alignment for the target size. |
461 | static uint64_t | |
462 | default_alignment(); | |
463 | ||
464 | // Return default alignment for a specified size--32 or 64. | |
75f65a3e | 465 | static uint64_t |
730cdc88 | 466 | default_alignment_for_size(int size); |
a2fb1b05 ILT |
467 | |
468 | private: | |
469 | Output_data(const Output_data&); | |
470 | Output_data& operator=(const Output_data&); | |
471 | ||
a3ad94ed | 472 | // This is used for verification, to make sure that we don't try to |
27bc2bce ILT |
473 | // change any sizes of allocated sections after we set the section |
474 | // addresses. | |
475 | static bool allocated_sizes_are_fixed; | |
a3ad94ed | 476 | |
27bc2bce | 477 | // Memory address in output file. |
75f65a3e | 478 | uint64_t address_; |
27bc2bce | 479 | // Size of data in output file. |
75f65a3e | 480 | off_t data_size_; |
27bc2bce | 481 | // File offset of contents in output file. |
75f65a3e | 482 | off_t offset_; |
27bc2bce ILT |
483 | // Whether address_ is valid. |
484 | bool is_address_valid_; | |
485 | // Whether data_size_ is valid. | |
486 | bool is_data_size_valid_; | |
487 | // Whether offset_ is valid. | |
488 | bool is_offset_valid_; | |
20e6d0d6 DK |
489 | // Whether data size is fixed. |
490 | bool is_data_size_fixed_; | |
4f4c5f80 ILT |
491 | // Count of dynamic relocations applied to this section. |
492 | unsigned int dynamic_reloc_count_; | |
a2fb1b05 ILT |
493 | }; |
494 | ||
54dc6425 ILT |
495 | // Output the section headers. |
496 | ||
497 | class Output_section_headers : public Output_data | |
498 | { | |
499 | public: | |
9025d29d | 500 | Output_section_headers(const Layout*, |
16649710 ILT |
501 | const Layout::Segment_list*, |
502 | const Layout::Section_list*, | |
6a74a719 | 503 | const Layout::Section_list*, |
d491d34e ILT |
504 | const Stringpool*, |
505 | const Output_section*); | |
54dc6425 | 506 | |
27bc2bce | 507 | protected: |
54dc6425 ILT |
508 | // Write the data to the file. |
509 | void | |
75f65a3e ILT |
510 | do_write(Output_file*); |
511 | ||
512 | // Return the required alignment. | |
513 | uint64_t | |
514 | do_addralign() const | |
730cdc88 | 515 | { return Output_data::default_alignment(); } |
54dc6425 | 516 | |
7d9e3d98 ILT |
517 | // Write to a map file. |
518 | void | |
519 | do_print_to_mapfile(Mapfile* mapfile) const | |
520 | { mapfile->print_output_data(this, _("** section headers")); } | |
521 | ||
20e6d0d6 DK |
522 | // Set final data size. |
523 | void | |
524 | set_final_data_size() | |
525 | { this->set_data_size(this->do_size()); } | |
526 | ||
54dc6425 | 527 | private: |
61ba1cf9 ILT |
528 | // Write the data to the file with the right size and endianness. |
529 | template<int size, bool big_endian> | |
530 | void | |
531 | do_sized_write(Output_file*); | |
532 | ||
20e6d0d6 DK |
533 | // Compute data size. |
534 | off_t | |
535 | do_size() const; | |
536 | ||
16649710 ILT |
537 | const Layout* layout_; |
538 | const Layout::Segment_list* segment_list_; | |
6a74a719 | 539 | const Layout::Section_list* section_list_; |
16649710 | 540 | const Layout::Section_list* unattached_section_list_; |
61ba1cf9 | 541 | const Stringpool* secnamepool_; |
d491d34e | 542 | const Output_section* shstrtab_section_; |
54dc6425 ILT |
543 | }; |
544 | ||
545 | // Output the segment headers. | |
546 | ||
547 | class Output_segment_headers : public Output_data | |
548 | { | |
549 | public: | |
9025d29d | 550 | Output_segment_headers(const Layout::Segment_list& segment_list); |
54dc6425 | 551 | |
27bc2bce | 552 | protected: |
54dc6425 ILT |
553 | // Write the data to the file. |
554 | void | |
75f65a3e ILT |
555 | do_write(Output_file*); |
556 | ||
557 | // Return the required alignment. | |
558 | uint64_t | |
559 | do_addralign() const | |
730cdc88 | 560 | { return Output_data::default_alignment(); } |
54dc6425 | 561 | |
7d9e3d98 ILT |
562 | // Write to a map file. |
563 | void | |
564 | do_print_to_mapfile(Mapfile* mapfile) const | |
565 | { mapfile->print_output_data(this, _("** segment headers")); } | |
566 | ||
20e6d0d6 DK |
567 | // Set final data size. |
568 | void | |
569 | set_final_data_size() | |
570 | { this->set_data_size(this->do_size()); } | |
571 | ||
54dc6425 | 572 | private: |
61ba1cf9 ILT |
573 | // Write the data to the file with the right size and endianness. |
574 | template<int size, bool big_endian> | |
575 | void | |
576 | do_sized_write(Output_file*); | |
577 | ||
20e6d0d6 DK |
578 | // Compute the current size. |
579 | off_t | |
580 | do_size() const; | |
581 | ||
54dc6425 ILT |
582 | const Layout::Segment_list& segment_list_; |
583 | }; | |
584 | ||
585 | // Output the ELF file header. | |
586 | ||
587 | class Output_file_header : public Output_data | |
588 | { | |
589 | public: | |
9025d29d | 590 | Output_file_header(const Target*, |
54dc6425 | 591 | const Symbol_table*, |
d391083d ILT |
592 | const Output_segment_headers*, |
593 | const char* entry); | |
75f65a3e ILT |
594 | |
595 | // Add information about the section headers. We lay out the ELF | |
596 | // file header before we create the section headers. | |
597 | void set_section_info(const Output_section_headers*, | |
598 | const Output_section* shstrtab); | |
54dc6425 | 599 | |
27bc2bce | 600 | protected: |
54dc6425 ILT |
601 | // Write the data to the file. |
602 | void | |
75f65a3e ILT |
603 | do_write(Output_file*); |
604 | ||
605 | // Return the required alignment. | |
606 | uint64_t | |
607 | do_addralign() const | |
730cdc88 | 608 | { return Output_data::default_alignment(); } |
75f65a3e | 609 | |
7d9e3d98 ILT |
610 | // Write to a map file. |
611 | void | |
612 | do_print_to_mapfile(Mapfile* mapfile) const | |
613 | { mapfile->print_output_data(this, _("** file header")); } | |
614 | ||
20e6d0d6 DK |
615 | // Set final data size. |
616 | void | |
617 | set_final_data_size(void) | |
618 | { this->set_data_size(this->do_size()); } | |
619 | ||
54dc6425 | 620 | private: |
61ba1cf9 ILT |
621 | // Write the data to the file with the right size and endianness. |
622 | template<int size, bool big_endian> | |
623 | void | |
624 | do_sized_write(Output_file*); | |
625 | ||
d391083d ILT |
626 | // Return the value to use for the entry address. |
627 | template<int size> | |
628 | typename elfcpp::Elf_types<size>::Elf_Addr | |
629 | entry(); | |
630 | ||
20e6d0d6 DK |
631 | // Compute the current data size. |
632 | off_t | |
633 | do_size() const; | |
634 | ||
54dc6425 ILT |
635 | const Target* target_; |
636 | const Symbol_table* symtab_; | |
61ba1cf9 | 637 | const Output_segment_headers* segment_header_; |
54dc6425 ILT |
638 | const Output_section_headers* section_header_; |
639 | const Output_section* shstrtab_; | |
d391083d | 640 | const char* entry_; |
54dc6425 ILT |
641 | }; |
642 | ||
ead1e424 ILT |
643 | // Output sections are mainly comprised of input sections. However, |
644 | // there are cases where we have data to write out which is not in an | |
645 | // input section. Output_section_data is used in such cases. This is | |
646 | // an abstract base class. | |
647 | ||
648 | class Output_section_data : public Output_data | |
649 | { | |
650 | public: | |
20e6d0d6 DK |
651 | Output_section_data(off_t data_size, uint64_t addralign, |
652 | bool is_data_size_fixed) | |
27bc2bce | 653 | : Output_data(), output_section_(NULL), addralign_(addralign) |
20e6d0d6 DK |
654 | { |
655 | this->set_data_size(data_size); | |
656 | if (is_data_size_fixed) | |
657 | this->fix_data_size(); | |
658 | } | |
ead1e424 ILT |
659 | |
660 | Output_section_data(uint64_t addralign) | |
27bc2bce | 661 | : Output_data(), output_section_(NULL), addralign_(addralign) |
ead1e424 ILT |
662 | { } |
663 | ||
16649710 ILT |
664 | // Return the output section. |
665 | const Output_section* | |
666 | output_section() const | |
667 | { return this->output_section_; } | |
668 | ||
ead1e424 ILT |
669 | // Record the output section. |
670 | void | |
16649710 | 671 | set_output_section(Output_section* os); |
ead1e424 | 672 | |
b8e6aad9 ILT |
673 | // Add an input section, for SHF_MERGE sections. This returns true |
674 | // if the section was handled. | |
675 | bool | |
676 | add_input_section(Relobj* object, unsigned int shndx) | |
677 | { return this->do_add_input_section(object, shndx); } | |
678 | ||
679 | // Given an input OBJECT, an input section index SHNDX within that | |
680 | // object, and an OFFSET relative to the start of that input | |
730cdc88 ILT |
681 | // section, return whether or not the corresponding offset within |
682 | // the output section is known. If this function returns true, it | |
683 | // sets *POUTPUT to the output offset. The value -1 indicates that | |
684 | // this input offset is being discarded. | |
8f00aeb8 | 685 | bool |
8383303e ILT |
686 | output_offset(const Relobj* object, unsigned int shndx, |
687 | section_offset_type offset, | |
688 | section_offset_type *poutput) const | |
730cdc88 | 689 | { return this->do_output_offset(object, shndx, offset, poutput); } |
b8e6aad9 | 690 | |
a9a60db6 ILT |
691 | // Return whether this is the merge section for the input section |
692 | // SHNDX in OBJECT. This should return true when output_offset | |
693 | // would return true for some values of OFFSET. | |
694 | bool | |
695 | is_merge_section_for(const Relobj* object, unsigned int shndx) const | |
696 | { return this->do_is_merge_section_for(object, shndx); } | |
697 | ||
96803768 ILT |
698 | // Write the contents to a buffer. This is used for sections which |
699 | // require postprocessing, such as compression. | |
700 | void | |
701 | write_to_buffer(unsigned char* buffer) | |
702 | { this->do_write_to_buffer(buffer); } | |
703 | ||
38c5e8b4 ILT |
704 | // Print merge stats to stderr. This should only be called for |
705 | // SHF_MERGE sections. | |
706 | void | |
707 | print_merge_stats(const char* section_name) | |
708 | { this->do_print_merge_stats(section_name); } | |
709 | ||
ead1e424 ILT |
710 | protected: |
711 | // The child class must implement do_write. | |
712 | ||
16649710 ILT |
713 | // The child class may implement specific adjustments to the output |
714 | // section. | |
715 | virtual void | |
716 | do_adjust_output_section(Output_section*) | |
717 | { } | |
718 | ||
b8e6aad9 ILT |
719 | // May be implemented by child class. Return true if the section |
720 | // was handled. | |
721 | virtual bool | |
722 | do_add_input_section(Relobj*, unsigned int) | |
723 | { gold_unreachable(); } | |
724 | ||
730cdc88 | 725 | // The child class may implement output_offset. |
b8e6aad9 | 726 | virtual bool |
8383303e ILT |
727 | do_output_offset(const Relobj*, unsigned int, section_offset_type, |
728 | section_offset_type*) const | |
b8e6aad9 ILT |
729 | { return false; } |
730 | ||
a9a60db6 ILT |
731 | // The child class may implement is_merge_section_for. |
732 | virtual bool | |
733 | do_is_merge_section_for(const Relobj*, unsigned int) const | |
734 | { return false; } | |
735 | ||
96803768 ILT |
736 | // The child class may implement write_to_buffer. Most child |
737 | // classes can not appear in a compressed section, and they do not | |
738 | // implement this. | |
739 | virtual void | |
740 | do_write_to_buffer(unsigned char*) | |
741 | { gold_unreachable(); } | |
742 | ||
38c5e8b4 ILT |
743 | // Print merge statistics. |
744 | virtual void | |
745 | do_print_merge_stats(const char*) | |
746 | { gold_unreachable(); } | |
747 | ||
ead1e424 ILT |
748 | // Return the required alignment. |
749 | uint64_t | |
750 | do_addralign() const | |
751 | { return this->addralign_; } | |
752 | ||
77e65537 ILT |
753 | // Return the output section. |
754 | Output_section* | |
755 | do_output_section() | |
756 | { return this->output_section_; } | |
757 | ||
ead1e424 ILT |
758 | // Return the section index of the output section. |
759 | unsigned int | |
760 | do_out_shndx() const; | |
761 | ||
5a6f7e2d ILT |
762 | // Set the alignment. |
763 | void | |
759b1a24 | 764 | set_addralign(uint64_t addralign); |
5a6f7e2d | 765 | |
ead1e424 ILT |
766 | private: |
767 | // The output section for this section. | |
77e65537 | 768 | Output_section* output_section_; |
ead1e424 ILT |
769 | // The required alignment. |
770 | uint64_t addralign_; | |
771 | }; | |
772 | ||
27bc2bce ILT |
773 | // Some Output_section_data classes build up their data step by step, |
774 | // rather than all at once. This class provides an interface for | |
775 | // them. | |
776 | ||
777 | class Output_section_data_build : public Output_section_data | |
778 | { | |
779 | public: | |
780 | Output_section_data_build(uint64_t addralign) | |
781 | : Output_section_data(addralign) | |
782 | { } | |
783 | ||
784 | // Get the current data size. | |
785 | off_t | |
786 | current_data_size() const | |
787 | { return this->current_data_size_for_child(); } | |
788 | ||
789 | // Set the current data size. | |
790 | void | |
791 | set_current_data_size(off_t data_size) | |
792 | { this->set_current_data_size_for_child(data_size); } | |
793 | ||
794 | protected: | |
795 | // Set the final data size. | |
796 | virtual void | |
797 | set_final_data_size() | |
798 | { this->set_data_size(this->current_data_size_for_child()); } | |
799 | }; | |
800 | ||
dbe717ef ILT |
801 | // A simple case of Output_data in which we have constant data to |
802 | // output. | |
ead1e424 | 803 | |
dbe717ef | 804 | class Output_data_const : public Output_section_data |
ead1e424 ILT |
805 | { |
806 | public: | |
dbe717ef | 807 | Output_data_const(const std::string& data, uint64_t addralign) |
20e6d0d6 | 808 | : Output_section_data(data.size(), addralign, true), data_(data) |
dbe717ef ILT |
809 | { } |
810 | ||
811 | Output_data_const(const char* p, off_t len, uint64_t addralign) | |
20e6d0d6 | 812 | : Output_section_data(len, addralign, true), data_(p, len) |
dbe717ef ILT |
813 | { } |
814 | ||
815 | Output_data_const(const unsigned char* p, off_t len, uint64_t addralign) | |
20e6d0d6 | 816 | : Output_section_data(len, addralign, true), |
dbe717ef ILT |
817 | data_(reinterpret_cast<const char*>(p), len) |
818 | { } | |
819 | ||
27bc2bce | 820 | protected: |
a3ad94ed | 821 | // Write the data to the output file. |
dbe717ef | 822 | void |
a3ad94ed | 823 | do_write(Output_file*); |
dbe717ef | 824 | |
96803768 ILT |
825 | // Write the data to a buffer. |
826 | void | |
827 | do_write_to_buffer(unsigned char* buffer) | |
828 | { memcpy(buffer, this->data_.data(), this->data_.size()); } | |
829 | ||
7d9e3d98 ILT |
830 | // Write to a map file. |
831 | void | |
832 | do_print_to_mapfile(Mapfile* mapfile) const | |
833 | { mapfile->print_output_data(this, _("** fill")); } | |
834 | ||
dbe717ef ILT |
835 | private: |
836 | std::string data_; | |
837 | }; | |
838 | ||
a3ad94ed ILT |
839 | // Another version of Output_data with constant data, in which the |
840 | // buffer is allocated by the caller. | |
dbe717ef | 841 | |
a3ad94ed | 842 | class Output_data_const_buffer : public Output_section_data |
dbe717ef ILT |
843 | { |
844 | public: | |
a3ad94ed | 845 | Output_data_const_buffer(const unsigned char* p, off_t len, |
7d9e3d98 | 846 | uint64_t addralign, const char* map_name) |
20e6d0d6 | 847 | : Output_section_data(len, addralign, true), |
7d9e3d98 | 848 | p_(p), map_name_(map_name) |
a3ad94ed ILT |
849 | { } |
850 | ||
27bc2bce | 851 | protected: |
a3ad94ed ILT |
852 | // Write the data the output file. |
853 | void | |
854 | do_write(Output_file*); | |
855 | ||
96803768 ILT |
856 | // Write the data to a buffer. |
857 | void | |
858 | do_write_to_buffer(unsigned char* buffer) | |
859 | { memcpy(buffer, this->p_, this->data_size()); } | |
860 | ||
7d9e3d98 ILT |
861 | // Write to a map file. |
862 | void | |
863 | do_print_to_mapfile(Mapfile* mapfile) const | |
864 | { mapfile->print_output_data(this, _(this->map_name_)); } | |
865 | ||
a3ad94ed | 866 | private: |
7d9e3d98 | 867 | // The data to output. |
a3ad94ed | 868 | const unsigned char* p_; |
7d9e3d98 ILT |
869 | // Name to use in a map file. Maps are a rarely used feature, but |
870 | // the space usage is minor as aren't very many of these objects. | |
871 | const char* map_name_; | |
a3ad94ed ILT |
872 | }; |
873 | ||
27bc2bce ILT |
874 | // A place holder for a fixed amount of data written out via some |
875 | // other mechanism. | |
a3ad94ed | 876 | |
27bc2bce | 877 | class Output_data_fixed_space : public Output_section_data |
a3ad94ed ILT |
878 | { |
879 | public: | |
7d9e3d98 ILT |
880 | Output_data_fixed_space(off_t data_size, uint64_t addralign, |
881 | const char* map_name) | |
20e6d0d6 | 882 | : Output_section_data(data_size, addralign, true), |
7d9e3d98 | 883 | map_name_(map_name) |
a3ad94ed ILT |
884 | { } |
885 | ||
27bc2bce ILT |
886 | protected: |
887 | // Write out the data--the actual data must be written out | |
888 | // elsewhere. | |
889 | void | |
890 | do_write(Output_file*) | |
ead1e424 | 891 | { } |
7d9e3d98 ILT |
892 | |
893 | // Write to a map file. | |
894 | void | |
895 | do_print_to_mapfile(Mapfile* mapfile) const | |
896 | { mapfile->print_output_data(this, _(this->map_name_)); } | |
897 | ||
898 | private: | |
899 | // Name to use in a map file. Maps are a rarely used feature, but | |
900 | // the space usage is minor as aren't very many of these objects. | |
901 | const char* map_name_; | |
27bc2bce | 902 | }; |
ead1e424 | 903 | |
27bc2bce ILT |
904 | // A place holder for variable sized data written out via some other |
905 | // mechanism. | |
906 | ||
907 | class Output_data_space : public Output_section_data_build | |
908 | { | |
909 | public: | |
7d9e3d98 ILT |
910 | explicit Output_data_space(uint64_t addralign, const char* map_name) |
911 | : Output_section_data_build(addralign), | |
912 | map_name_(map_name) | |
27bc2bce | 913 | { } |
ead1e424 | 914 | |
5a6f7e2d ILT |
915 | // Set the alignment. |
916 | void | |
917 | set_space_alignment(uint64_t align) | |
918 | { this->set_addralign(align); } | |
919 | ||
27bc2bce ILT |
920 | protected: |
921 | // Write out the data--the actual data must be written out | |
922 | // elsewhere. | |
ead1e424 ILT |
923 | void |
924 | do_write(Output_file*) | |
925 | { } | |
7d9e3d98 ILT |
926 | |
927 | // Write to a map file. | |
928 | void | |
929 | do_print_to_mapfile(Mapfile* mapfile) const | |
930 | { mapfile->print_output_data(this, _(this->map_name_)); } | |
931 | ||
932 | private: | |
933 | // Name to use in a map file. Maps are a rarely used feature, but | |
934 | // the space usage is minor as aren't very many of these objects. | |
935 | const char* map_name_; | |
936 | }; | |
937 | ||
938 | // Fill fixed space with zeroes. This is just like | |
939 | // Output_data_fixed_space, except that the map name is known. | |
940 | ||
941 | class Output_data_zero_fill : public Output_section_data | |
942 | { | |
943 | public: | |
944 | Output_data_zero_fill(off_t data_size, uint64_t addralign) | |
20e6d0d6 | 945 | : Output_section_data(data_size, addralign, true) |
7d9e3d98 ILT |
946 | { } |
947 | ||
948 | protected: | |
949 | // There is no data to write out. | |
950 | void | |
951 | do_write(Output_file*) | |
952 | { } | |
953 | ||
954 | // Write to a map file. | |
955 | void | |
956 | do_print_to_mapfile(Mapfile* mapfile) const | |
957 | { mapfile->print_output_data(this, "** zero fill"); } | |
ead1e424 ILT |
958 | }; |
959 | ||
a3ad94ed ILT |
960 | // A string table which goes into an output section. |
961 | ||
962 | class Output_data_strtab : public Output_section_data | |
963 | { | |
964 | public: | |
965 | Output_data_strtab(Stringpool* strtab) | |
966 | : Output_section_data(1), strtab_(strtab) | |
967 | { } | |
968 | ||
27bc2bce | 969 | protected: |
a3ad94ed ILT |
970 | // This is called to set the address and file offset. Here we make |
971 | // sure that the Stringpool is finalized. | |
972 | void | |
27bc2bce | 973 | set_final_data_size(); |
a3ad94ed ILT |
974 | |
975 | // Write out the data. | |
976 | void | |
977 | do_write(Output_file*); | |
978 | ||
96803768 ILT |
979 | // Write the data to a buffer. |
980 | void | |
981 | do_write_to_buffer(unsigned char* buffer) | |
982 | { this->strtab_->write_to_buffer(buffer, this->data_size()); } | |
983 | ||
7d9e3d98 ILT |
984 | // Write to a map file. |
985 | void | |
986 | do_print_to_mapfile(Mapfile* mapfile) const | |
987 | { mapfile->print_output_data(this, _("** string table")); } | |
988 | ||
a3ad94ed ILT |
989 | private: |
990 | Stringpool* strtab_; | |
991 | }; | |
992 | ||
c06b7b0b ILT |
993 | // This POD class is used to represent a single reloc in the output |
994 | // file. This could be a private class within Output_data_reloc, but | |
995 | // the templatization is complex enough that I broke it out into a | |
996 | // separate class. The class is templatized on either elfcpp::SHT_REL | |
997 | // or elfcpp::SHT_RELA, and also on whether this is a dynamic | |
998 | // relocation or an ordinary relocation. | |
999 | ||
dceae3c1 ILT |
1000 | // A relocation can be against a global symbol, a local symbol, a |
1001 | // local section symbol, an output section, or the undefined symbol at | |
1002 | // index 0. We represent the latter by using a NULL global symbol. | |
c06b7b0b ILT |
1003 | |
1004 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
1005 | class Output_reloc; | |
1006 | ||
1007 | template<bool dynamic, int size, bool big_endian> | |
1008 | class Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian> | |
1009 | { | |
1010 | public: | |
1011 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
624f8810 | 1012 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Addend; |
c06b7b0b | 1013 | |
eff45813 CC |
1014 | static const Address invalid_address = static_cast<Address>(0) - 1; |
1015 | ||
c06b7b0b ILT |
1016 | // An uninitialized entry. We need this because we want to put |
1017 | // instances of this class into an STL container. | |
1018 | Output_reloc() | |
1019 | : local_sym_index_(INVALID_CODE) | |
1020 | { } | |
1021 | ||
dceae3c1 ILT |
1022 | // We have a bunch of different constructors. They come in pairs |
1023 | // depending on how the address of the relocation is specified. It | |
1024 | // can either be an offset in an Output_data or an offset in an | |
1025 | // input section. | |
1026 | ||
c06b7b0b | 1027 | // A reloc against a global symbol. |
5a6f7e2d | 1028 | |
a3ad94ed | 1029 | Output_reloc(Symbol* gsym, unsigned int type, Output_data* od, |
e8c846c3 | 1030 | Address address, bool is_relative); |
5a6f7e2d | 1031 | |
ef9beddf ILT |
1032 | Output_reloc(Symbol* gsym, unsigned int type, |
1033 | Sized_relobj<size, big_endian>* relobj, | |
e8c846c3 | 1034 | unsigned int shndx, Address address, bool is_relative); |
c06b7b0b | 1035 | |
dceae3c1 | 1036 | // A reloc against a local symbol or local section symbol. |
5a6f7e2d ILT |
1037 | |
1038 | Output_reloc(Sized_relobj<size, big_endian>* relobj, | |
7bf1f802 | 1039 | unsigned int local_sym_index, unsigned int type, |
dceae3c1 ILT |
1040 | Output_data* od, Address address, bool is_relative, |
1041 | bool is_section_symbol); | |
5a6f7e2d ILT |
1042 | |
1043 | Output_reloc(Sized_relobj<size, big_endian>* relobj, | |
7bf1f802 | 1044 | unsigned int local_sym_index, unsigned int type, |
dceae3c1 ILT |
1045 | unsigned int shndx, Address address, bool is_relative, |
1046 | bool is_section_symbol); | |
c06b7b0b ILT |
1047 | |
1048 | // A reloc against the STT_SECTION symbol of an output section. | |
5a6f7e2d | 1049 | |
a3ad94ed | 1050 | Output_reloc(Output_section* os, unsigned int type, Output_data* od, |
7bf1f802 | 1051 | Address address); |
5a6f7e2d | 1052 | |
ef9beddf ILT |
1053 | Output_reloc(Output_section* os, unsigned int type, |
1054 | Sized_relobj<size, big_endian>* relobj, | |
7bf1f802 | 1055 | unsigned int shndx, Address address); |
c06b7b0b | 1056 | |
e8c846c3 ILT |
1057 | // Return TRUE if this is a RELATIVE relocation. |
1058 | bool | |
1059 | is_relative() const | |
1060 | { return this->is_relative_; } | |
1061 | ||
dceae3c1 ILT |
1062 | // Return whether this is against a local section symbol. |
1063 | bool | |
1064 | is_local_section_symbol() const | |
1065 | { | |
1066 | return (this->local_sym_index_ != GSYM_CODE | |
1067 | && this->local_sym_index_ != SECTION_CODE | |
1068 | && this->local_sym_index_ != INVALID_CODE | |
1069 | && this->is_section_symbol_); | |
1070 | } | |
1071 | ||
1072 | // For a local section symbol, return the offset of the input | |
624f8810 ILT |
1073 | // section within the output section. ADDEND is the addend being |
1074 | // applied to the input section. | |
ef9beddf | 1075 | Address |
624f8810 | 1076 | local_section_offset(Addend addend) const; |
dceae3c1 | 1077 | |
d1f003c6 ILT |
1078 | // Get the value of the symbol referred to by a Rel relocation when |
1079 | // we are adding the given ADDEND. | |
e8c846c3 | 1080 | Address |
624f8810 | 1081 | symbol_value(Addend addend) const; |
e8c846c3 | 1082 | |
c06b7b0b ILT |
1083 | // Write the reloc entry to an output view. |
1084 | void | |
1085 | write(unsigned char* pov) const; | |
1086 | ||
1087 | // Write the offset and info fields to Write_rel. | |
1088 | template<typename Write_rel> | |
1089 | void write_rel(Write_rel*) const; | |
1090 | ||
d98bc257 ILT |
1091 | // This is used when sorting dynamic relocs. Return -1 to sort this |
1092 | // reloc before R2, 0 to sort the same as R2, 1 to sort after R2. | |
1093 | int | |
1094 | compare(const Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>& r2) | |
1095 | const; | |
1096 | ||
1097 | // Return whether this reloc should be sorted before the argument | |
1098 | // when sorting dynamic relocs. | |
1099 | bool | |
1100 | sort_before(const Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>& | |
1101 | r2) const | |
1102 | { return this->compare(r2) < 0; } | |
1103 | ||
c06b7b0b | 1104 | private: |
dceae3c1 ILT |
1105 | // Record that we need a dynamic symbol index. |
1106 | void | |
1107 | set_needs_dynsym_index(); | |
1108 | ||
1109 | // Return the symbol index. | |
c06b7b0b ILT |
1110 | unsigned int |
1111 | get_symbol_index() const; | |
1112 | ||
d98bc257 | 1113 | // Return the output address. |
a984ee1d | 1114 | Address |
d98bc257 ILT |
1115 | get_address() const; |
1116 | ||
c06b7b0b ILT |
1117 | // Codes for local_sym_index_. |
1118 | enum | |
1119 | { | |
1120 | // Global symbol. | |
1121 | GSYM_CODE = -1U, | |
1122 | // Output section. | |
1123 | SECTION_CODE = -2U, | |
1124 | // Invalid uninitialized entry. | |
1125 | INVALID_CODE = -3U | |
1126 | }; | |
1127 | ||
1128 | union | |
1129 | { | |
dceae3c1 ILT |
1130 | // For a local symbol or local section symbol |
1131 | // (this->local_sym_index_ >= 0), the object. We will never | |
1132 | // generate a relocation against a local symbol in a dynamic | |
1133 | // object; that doesn't make sense. And our callers will always | |
1134 | // be templatized, so we use Sized_relobj here. | |
5a6f7e2d | 1135 | Sized_relobj<size, big_endian>* relobj; |
dceae3c1 ILT |
1136 | // For a global symbol (this->local_sym_index_ == GSYM_CODE, the |
1137 | // symbol. If this is NULL, it indicates a relocation against the | |
1138 | // undefined 0 symbol. | |
c06b7b0b | 1139 | Symbol* gsym; |
dceae3c1 ILT |
1140 | // For a relocation against an output section |
1141 | // (this->local_sym_index_ == SECTION_CODE), the output section. | |
c06b7b0b | 1142 | Output_section* os; |
5a6f7e2d ILT |
1143 | } u1_; |
1144 | union | |
1145 | { | |
dceae3c1 ILT |
1146 | // If this->shndx_ is not INVALID CODE, the object which holds the |
1147 | // input section being used to specify the reloc address. | |
ef9beddf | 1148 | Sized_relobj<size, big_endian>* relobj; |
dceae3c1 | 1149 | // If this->shndx_ is INVALID_CODE, the output data being used to |
5a6f7e2d ILT |
1150 | // specify the reloc address. This may be NULL if the reloc |
1151 | // address is absolute. | |
1152 | Output_data* od; | |
1153 | } u2_; | |
1154 | // The address offset within the input section or the Output_data. | |
1155 | Address address_; | |
dceae3c1 ILT |
1156 | // This is GSYM_CODE for a global symbol, or SECTION_CODE for a |
1157 | // relocation against an output section, or INVALID_CODE for an | |
1158 | // uninitialized value. Otherwise, for a local symbol | |
1159 | // (this->is_section_symbol_ is false), the local symbol index. For | |
1160 | // a local section symbol (this->is_section_symbol_ is true), the | |
1161 | // section index in the input file. | |
c06b7b0b | 1162 | unsigned int local_sym_index_; |
a3ad94ed | 1163 | // The reloc type--a processor specific code. |
dceae3c1 | 1164 | unsigned int type_ : 30; |
e8c846c3 ILT |
1165 | // True if the relocation is a RELATIVE relocation. |
1166 | bool is_relative_ : 1; | |
dceae3c1 ILT |
1167 | // True if the relocation is against a section symbol. |
1168 | bool is_section_symbol_ : 1; | |
5a6f7e2d ILT |
1169 | // If the reloc address is an input section in an object, the |
1170 | // section index. This is INVALID_CODE if the reloc address is | |
1171 | // specified in some other way. | |
1172 | unsigned int shndx_; | |
c06b7b0b ILT |
1173 | }; |
1174 | ||
1175 | // The SHT_RELA version of Output_reloc<>. This is just derived from | |
1176 | // the SHT_REL version of Output_reloc, but it adds an addend. | |
1177 | ||
1178 | template<bool dynamic, int size, bool big_endian> | |
1179 | class Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian> | |
1180 | { | |
1181 | public: | |
1182 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
1183 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Addend; | |
1184 | ||
1185 | // An uninitialized entry. | |
1186 | Output_reloc() | |
1187 | : rel_() | |
1188 | { } | |
1189 | ||
1190 | // A reloc against a global symbol. | |
5a6f7e2d | 1191 | |
a3ad94ed | 1192 | Output_reloc(Symbol* gsym, unsigned int type, Output_data* od, |
e8c846c3 ILT |
1193 | Address address, Addend addend, bool is_relative) |
1194 | : rel_(gsym, type, od, address, is_relative), addend_(addend) | |
c06b7b0b ILT |
1195 | { } |
1196 | ||
ef9beddf ILT |
1197 | Output_reloc(Symbol* gsym, unsigned int type, |
1198 | Sized_relobj<size, big_endian>* relobj, | |
e8c846c3 ILT |
1199 | unsigned int shndx, Address address, Addend addend, |
1200 | bool is_relative) | |
1201 | : rel_(gsym, type, relobj, shndx, address, is_relative), addend_(addend) | |
5a6f7e2d ILT |
1202 | { } |
1203 | ||
c06b7b0b | 1204 | // A reloc against a local symbol. |
5a6f7e2d ILT |
1205 | |
1206 | Output_reloc(Sized_relobj<size, big_endian>* relobj, | |
e8c846c3 ILT |
1207 | unsigned int local_sym_index, unsigned int type, |
1208 | Output_data* od, Address address, | |
dceae3c1 ILT |
1209 | Addend addend, bool is_relative, bool is_section_symbol) |
1210 | : rel_(relobj, local_sym_index, type, od, address, is_relative, | |
1211 | is_section_symbol), | |
e8c846c3 | 1212 | addend_(addend) |
5a6f7e2d ILT |
1213 | { } |
1214 | ||
1215 | Output_reloc(Sized_relobj<size, big_endian>* relobj, | |
e8c846c3 ILT |
1216 | unsigned int local_sym_index, unsigned int type, |
1217 | unsigned int shndx, Address address, | |
dceae3c1 ILT |
1218 | Addend addend, bool is_relative, bool is_section_symbol) |
1219 | : rel_(relobj, local_sym_index, type, shndx, address, is_relative, | |
1220 | is_section_symbol), | |
5a6f7e2d | 1221 | addend_(addend) |
c06b7b0b ILT |
1222 | { } |
1223 | ||
1224 | // A reloc against the STT_SECTION symbol of an output section. | |
5a6f7e2d | 1225 | |
a3ad94ed ILT |
1226 | Output_reloc(Output_section* os, unsigned int type, Output_data* od, |
1227 | Address address, Addend addend) | |
1228 | : rel_(os, type, od, address), addend_(addend) | |
c06b7b0b ILT |
1229 | { } |
1230 | ||
ef9beddf ILT |
1231 | Output_reloc(Output_section* os, unsigned int type, |
1232 | Sized_relobj<size, big_endian>* relobj, | |
5a6f7e2d ILT |
1233 | unsigned int shndx, Address address, Addend addend) |
1234 | : rel_(os, type, relobj, shndx, address), addend_(addend) | |
1235 | { } | |
1236 | ||
c06b7b0b ILT |
1237 | // Write the reloc entry to an output view. |
1238 | void | |
1239 | write(unsigned char* pov) const; | |
1240 | ||
d98bc257 ILT |
1241 | // Return whether this reloc should be sorted before the argument |
1242 | // when sorting dynamic relocs. | |
1243 | bool | |
1244 | sort_before(const Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>& | |
1245 | r2) const | |
1246 | { | |
1247 | int i = this->rel_.compare(r2.rel_); | |
1248 | if (i < 0) | |
d98bc257 | 1249 | return true; |
cc28ec61 ILT |
1250 | else if (i > 0) |
1251 | return false; | |
d98bc257 ILT |
1252 | else |
1253 | return this->addend_ < r2.addend_; | |
1254 | } | |
1255 | ||
c06b7b0b ILT |
1256 | private: |
1257 | // The basic reloc. | |
1258 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian> rel_; | |
1259 | // The addend. | |
1260 | Addend addend_; | |
1261 | }; | |
1262 | ||
1263 | // Output_data_reloc is used to manage a section containing relocs. | |
1264 | // SH_TYPE is either elfcpp::SHT_REL or elfcpp::SHT_RELA. DYNAMIC | |
1265 | // indicates whether this is a dynamic relocation or a normal | |
1266 | // relocation. Output_data_reloc_base is a base class. | |
1267 | // Output_data_reloc is the real class, which we specialize based on | |
1268 | // the reloc type. | |
1269 | ||
1270 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
27bc2bce | 1271 | class Output_data_reloc_base : public Output_section_data_build |
c06b7b0b ILT |
1272 | { |
1273 | public: | |
1274 | typedef Output_reloc<sh_type, dynamic, size, big_endian> Output_reloc_type; | |
1275 | typedef typename Output_reloc_type::Address Address; | |
1276 | static const int reloc_size = | |
1277 | Reloc_types<sh_type, size, big_endian>::reloc_size; | |
1278 | ||
1279 | // Construct the section. | |
d98bc257 ILT |
1280 | Output_data_reloc_base(bool sort_relocs) |
1281 | : Output_section_data_build(Output_data::default_alignment_for_size(size)), | |
1282 | sort_relocs_(sort_relocs) | |
c06b7b0b ILT |
1283 | { } |
1284 | ||
27bc2bce | 1285 | protected: |
c06b7b0b ILT |
1286 | // Write out the data. |
1287 | void | |
1288 | do_write(Output_file*); | |
1289 | ||
16649710 ILT |
1290 | // Set the entry size and the link. |
1291 | void | |
1292 | do_adjust_output_section(Output_section *os); | |
1293 | ||
7d9e3d98 ILT |
1294 | // Write to a map file. |
1295 | void | |
1296 | do_print_to_mapfile(Mapfile* mapfile) const | |
1297 | { | |
1298 | mapfile->print_output_data(this, | |
1299 | (dynamic | |
1300 | ? _("** dynamic relocs") | |
1301 | : _("** relocs"))); | |
1302 | } | |
1303 | ||
c06b7b0b ILT |
1304 | // Add a relocation entry. |
1305 | void | |
4f4c5f80 | 1306 | add(Output_data *od, const Output_reloc_type& reloc) |
c06b7b0b ILT |
1307 | { |
1308 | this->relocs_.push_back(reloc); | |
27bc2bce | 1309 | this->set_current_data_size(this->relocs_.size() * reloc_size); |
4f4c5f80 | 1310 | od->add_dynamic_reloc(); |
c06b7b0b ILT |
1311 | } |
1312 | ||
1313 | private: | |
1314 | typedef std::vector<Output_reloc_type> Relocs; | |
1315 | ||
d98bc257 ILT |
1316 | // The class used to sort the relocations. |
1317 | struct Sort_relocs_comparison | |
1318 | { | |
1319 | bool | |
1320 | operator()(const Output_reloc_type& r1, const Output_reloc_type& r2) const | |
1321 | { return r1.sort_before(r2); } | |
1322 | }; | |
1323 | ||
1324 | // The relocations in this section. | |
c06b7b0b | 1325 | Relocs relocs_; |
d98bc257 ILT |
1326 | // Whether to sort the relocations when writing them out, to make |
1327 | // the dynamic linker more efficient. | |
1328 | bool sort_relocs_; | |
c06b7b0b ILT |
1329 | }; |
1330 | ||
1331 | // The class which callers actually create. | |
1332 | ||
1333 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
1334 | class Output_data_reloc; | |
1335 | ||
1336 | // The SHT_REL version of Output_data_reloc. | |
1337 | ||
1338 | template<bool dynamic, int size, bool big_endian> | |
1339 | class Output_data_reloc<elfcpp::SHT_REL, dynamic, size, big_endian> | |
1340 | : public Output_data_reloc_base<elfcpp::SHT_REL, dynamic, size, big_endian> | |
1341 | { | |
dceae3c1 | 1342 | private: |
c06b7b0b ILT |
1343 | typedef Output_data_reloc_base<elfcpp::SHT_REL, dynamic, size, |
1344 | big_endian> Base; | |
1345 | ||
1346 | public: | |
1347 | typedef typename Base::Output_reloc_type Output_reloc_type; | |
1348 | typedef typename Output_reloc_type::Address Address; | |
1349 | ||
d98bc257 ILT |
1350 | Output_data_reloc(bool sr) |
1351 | : Output_data_reloc_base<elfcpp::SHT_REL, dynamic, size, big_endian>(sr) | |
c06b7b0b ILT |
1352 | { } |
1353 | ||
1354 | // Add a reloc against a global symbol. | |
5a6f7e2d | 1355 | |
c06b7b0b | 1356 | void |
a3ad94ed | 1357 | add_global(Symbol* gsym, unsigned int type, Output_data* od, Address address) |
e8c846c3 | 1358 | { this->add(od, Output_reloc_type(gsym, type, od, address, false)); } |
c06b7b0b | 1359 | |
5a6f7e2d | 1360 | void |
ef9beddf ILT |
1361 | add_global(Symbol* gsym, unsigned int type, Output_data* od, |
1362 | Sized_relobj<size, big_endian>* relobj, | |
5a6f7e2d | 1363 | unsigned int shndx, Address address) |
e8c846c3 ILT |
1364 | { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, |
1365 | false)); } | |
1366 | ||
12c0daef ILT |
1367 | // These are to simplify the Copy_relocs class. |
1368 | ||
1369 | void | |
1370 | add_global(Symbol* gsym, unsigned int type, Output_data* od, Address address, | |
1371 | Address addend) | |
1372 | { | |
1373 | gold_assert(addend == 0); | |
1374 | this->add_global(gsym, type, od, address); | |
1375 | } | |
1376 | ||
1377 | void | |
ef9beddf ILT |
1378 | add_global(Symbol* gsym, unsigned int type, Output_data* od, |
1379 | Sized_relobj<size, big_endian>* relobj, | |
12c0daef ILT |
1380 | unsigned int shndx, Address address, Address addend) |
1381 | { | |
1382 | gold_assert(addend == 0); | |
1383 | this->add_global(gsym, type, od, relobj, shndx, address); | |
1384 | } | |
1385 | ||
e8c846c3 ILT |
1386 | // Add a RELATIVE reloc against a global symbol. The final relocation |
1387 | // will not reference the symbol. | |
1388 | ||
1389 | void | |
1390 | add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, | |
1391 | Address address) | |
1392 | { this->add(od, Output_reloc_type(gsym, type, od, address, true)); } | |
1393 | ||
1394 | void | |
1395 | add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, | |
ef9beddf ILT |
1396 | Sized_relobj<size, big_endian>* relobj, |
1397 | unsigned int shndx, Address address) | |
dceae3c1 ILT |
1398 | { |
1399 | this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, | |
1400 | true)); | |
1401 | } | |
5a6f7e2d | 1402 | |
c06b7b0b | 1403 | // Add a reloc against a local symbol. |
5a6f7e2d | 1404 | |
c06b7b0b | 1405 | void |
5a6f7e2d | 1406 | add_local(Sized_relobj<size, big_endian>* relobj, |
a3ad94ed ILT |
1407 | unsigned int local_sym_index, unsigned int type, |
1408 | Output_data* od, Address address) | |
dceae3c1 ILT |
1409 | { |
1410 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, | |
1411 | address, false, false)); | |
1412 | } | |
5a6f7e2d ILT |
1413 | |
1414 | void | |
1415 | add_local(Sized_relobj<size, big_endian>* relobj, | |
1416 | unsigned int local_sym_index, unsigned int type, | |
4f4c5f80 | 1417 | Output_data* od, unsigned int shndx, Address address) |
dceae3c1 ILT |
1418 | { |
1419 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, | |
1420 | address, false, false)); | |
1421 | } | |
e8c846c3 ILT |
1422 | |
1423 | // Add a RELATIVE reloc against a local symbol. | |
5a6f7e2d | 1424 | |
e8c846c3 ILT |
1425 | void |
1426 | add_local_relative(Sized_relobj<size, big_endian>* relobj, | |
1427 | unsigned int local_sym_index, unsigned int type, | |
1428 | Output_data* od, Address address) | |
dceae3c1 ILT |
1429 | { |
1430 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, | |
1431 | address, true, false)); | |
1432 | } | |
e8c846c3 ILT |
1433 | |
1434 | void | |
1435 | add_local_relative(Sized_relobj<size, big_endian>* relobj, | |
1436 | unsigned int local_sym_index, unsigned int type, | |
1437 | Output_data* od, unsigned int shndx, Address address) | |
dceae3c1 ILT |
1438 | { |
1439 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, | |
1440 | address, true, false)); | |
1441 | } | |
1442 | ||
1443 | // Add a reloc against a local section symbol. This will be | |
1444 | // converted into a reloc against the STT_SECTION symbol of the | |
1445 | // output section. | |
1446 | ||
1447 | void | |
1448 | add_local_section(Sized_relobj<size, big_endian>* relobj, | |
1449 | unsigned int input_shndx, unsigned int type, | |
1450 | Output_data* od, Address address) | |
1451 | { | |
1452 | this->add(od, Output_reloc_type(relobj, input_shndx, type, od, | |
1453 | address, false, true)); | |
1454 | } | |
1455 | ||
1456 | void | |
1457 | add_local_section(Sized_relobj<size, big_endian>* relobj, | |
1458 | unsigned int input_shndx, unsigned int type, | |
1459 | Output_data* od, unsigned int shndx, Address address) | |
1460 | { | |
1461 | this->add(od, Output_reloc_type(relobj, input_shndx, type, shndx, | |
1462 | address, false, true)); | |
1463 | } | |
c06b7b0b ILT |
1464 | |
1465 | // A reloc against the STT_SECTION symbol of an output section. | |
4f4c5f80 ILT |
1466 | // OS is the Output_section that the relocation refers to; OD is |
1467 | // the Output_data object being relocated. | |
5a6f7e2d | 1468 | |
c06b7b0b | 1469 | void |
a3ad94ed ILT |
1470 | add_output_section(Output_section* os, unsigned int type, |
1471 | Output_data* od, Address address) | |
4f4c5f80 | 1472 | { this->add(od, Output_reloc_type(os, type, od, address)); } |
5a6f7e2d ILT |
1473 | |
1474 | void | |
4f4c5f80 | 1475 | add_output_section(Output_section* os, unsigned int type, Output_data* od, |
ef9beddf ILT |
1476 | Sized_relobj<size, big_endian>* relobj, |
1477 | unsigned int shndx, Address address) | |
4f4c5f80 | 1478 | { this->add(od, Output_reloc_type(os, type, relobj, shndx, address)); } |
c06b7b0b ILT |
1479 | }; |
1480 | ||
1481 | // The SHT_RELA version of Output_data_reloc. | |
1482 | ||
1483 | template<bool dynamic, int size, bool big_endian> | |
1484 | class Output_data_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian> | |
1485 | : public Output_data_reloc_base<elfcpp::SHT_RELA, dynamic, size, big_endian> | |
1486 | { | |
dceae3c1 | 1487 | private: |
c06b7b0b ILT |
1488 | typedef Output_data_reloc_base<elfcpp::SHT_RELA, dynamic, size, |
1489 | big_endian> Base; | |
1490 | ||
1491 | public: | |
1492 | typedef typename Base::Output_reloc_type Output_reloc_type; | |
1493 | typedef typename Output_reloc_type::Address Address; | |
1494 | typedef typename Output_reloc_type::Addend Addend; | |
1495 | ||
d98bc257 ILT |
1496 | Output_data_reloc(bool sr) |
1497 | : Output_data_reloc_base<elfcpp::SHT_RELA, dynamic, size, big_endian>(sr) | |
c06b7b0b ILT |
1498 | { } |
1499 | ||
1500 | // Add a reloc against a global symbol. | |
5a6f7e2d | 1501 | |
c06b7b0b | 1502 | void |
a3ad94ed ILT |
1503 | add_global(Symbol* gsym, unsigned int type, Output_data* od, |
1504 | Address address, Addend addend) | |
e8c846c3 ILT |
1505 | { this->add(od, Output_reloc_type(gsym, type, od, address, addend, |
1506 | false)); } | |
c06b7b0b | 1507 | |
5a6f7e2d | 1508 | void |
ef9beddf ILT |
1509 | add_global(Symbol* gsym, unsigned int type, Output_data* od, |
1510 | Sized_relobj<size, big_endian>* relobj, | |
4f4c5f80 ILT |
1511 | unsigned int shndx, Address address, |
1512 | Addend addend) | |
1513 | { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, | |
e8c846c3 ILT |
1514 | addend, false)); } |
1515 | ||
1516 | // Add a RELATIVE reloc against a global symbol. The final output | |
1517 | // relocation will not reference the symbol, but we must keep the symbol | |
1518 | // information long enough to set the addend of the relocation correctly | |
1519 | // when it is written. | |
1520 | ||
1521 | void | |
1522 | add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, | |
1523 | Address address, Addend addend) | |
1524 | { this->add(od, Output_reloc_type(gsym, type, od, address, addend, true)); } | |
1525 | ||
1526 | void | |
1527 | add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, | |
ef9beddf ILT |
1528 | Sized_relobj<size, big_endian>* relobj, |
1529 | unsigned int shndx, Address address, Addend addend) | |
e8c846c3 ILT |
1530 | { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, |
1531 | addend, true)); } | |
5a6f7e2d | 1532 | |
c06b7b0b | 1533 | // Add a reloc against a local symbol. |
5a6f7e2d | 1534 | |
c06b7b0b | 1535 | void |
5a6f7e2d | 1536 | add_local(Sized_relobj<size, big_endian>* relobj, |
c06b7b0b | 1537 | unsigned int local_sym_index, unsigned int type, |
a3ad94ed | 1538 | Output_data* od, Address address, Addend addend) |
c06b7b0b | 1539 | { |
4f4c5f80 | 1540 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, address, |
dceae3c1 | 1541 | addend, false, false)); |
5a6f7e2d ILT |
1542 | } |
1543 | ||
1544 | void | |
1545 | add_local(Sized_relobj<size, big_endian>* relobj, | |
1546 | unsigned int local_sym_index, unsigned int type, | |
4f4c5f80 ILT |
1547 | Output_data* od, unsigned int shndx, Address address, |
1548 | Addend addend) | |
5a6f7e2d | 1549 | { |
4f4c5f80 | 1550 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, |
dceae3c1 | 1551 | address, addend, false, false)); |
e8c846c3 ILT |
1552 | } |
1553 | ||
1554 | // Add a RELATIVE reloc against a local symbol. | |
1555 | ||
1556 | void | |
1557 | add_local_relative(Sized_relobj<size, big_endian>* relobj, | |
1558 | unsigned int local_sym_index, unsigned int type, | |
1559 | Output_data* od, Address address, Addend addend) | |
1560 | { | |
1561 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, address, | |
dceae3c1 | 1562 | addend, true, false)); |
e8c846c3 ILT |
1563 | } |
1564 | ||
1565 | void | |
1566 | add_local_relative(Sized_relobj<size, big_endian>* relobj, | |
1567 | unsigned int local_sym_index, unsigned int type, | |
1568 | Output_data* od, unsigned int shndx, Address address, | |
1569 | Addend addend) | |
1570 | { | |
1571 | this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, | |
dceae3c1 ILT |
1572 | address, addend, true, false)); |
1573 | } | |
1574 | ||
1575 | // Add a reloc against a local section symbol. This will be | |
1576 | // converted into a reloc against the STT_SECTION symbol of the | |
1577 | // output section. | |
1578 | ||
1579 | void | |
1580 | add_local_section(Sized_relobj<size, big_endian>* relobj, | |
1581 | unsigned int input_shndx, unsigned int type, | |
1582 | Output_data* od, Address address, Addend addend) | |
1583 | { | |
1584 | this->add(od, Output_reloc_type(relobj, input_shndx, type, od, address, | |
1585 | addend, false, true)); | |
1586 | } | |
1587 | ||
1588 | void | |
1589 | add_local_section(Sized_relobj<size, big_endian>* relobj, | |
1590 | unsigned int input_shndx, unsigned int type, | |
1591 | Output_data* od, unsigned int shndx, Address address, | |
1592 | Addend addend) | |
1593 | { | |
1594 | this->add(od, Output_reloc_type(relobj, input_shndx, type, shndx, | |
1595 | address, addend, false, true)); | |
c06b7b0b ILT |
1596 | } |
1597 | ||
1598 | // A reloc against the STT_SECTION symbol of an output section. | |
5a6f7e2d | 1599 | |
c06b7b0b | 1600 | void |
a3ad94ed ILT |
1601 | add_output_section(Output_section* os, unsigned int type, Output_data* od, |
1602 | Address address, Addend addend) | |
4f4c5f80 | 1603 | { this->add(os, Output_reloc_type(os, type, od, address, addend)); } |
5a6f7e2d ILT |
1604 | |
1605 | void | |
ef9beddf ILT |
1606 | add_output_section(Output_section* os, unsigned int type, |
1607 | Sized_relobj<size, big_endian>* relobj, | |
5a6f7e2d | 1608 | unsigned int shndx, Address address, Addend addend) |
4f4c5f80 ILT |
1609 | { this->add(os, Output_reloc_type(os, type, relobj, shndx, address, |
1610 | addend)); } | |
c06b7b0b ILT |
1611 | }; |
1612 | ||
6a74a719 ILT |
1613 | // Output_relocatable_relocs represents a relocation section in a |
1614 | // relocatable link. The actual data is written out in the target | |
1615 | // hook relocate_for_relocatable. This just saves space for it. | |
1616 | ||
1617 | template<int sh_type, int size, bool big_endian> | |
1618 | class Output_relocatable_relocs : public Output_section_data | |
1619 | { | |
1620 | public: | |
1621 | Output_relocatable_relocs(Relocatable_relocs* rr) | |
1622 | : Output_section_data(Output_data::default_alignment_for_size(size)), | |
1623 | rr_(rr) | |
1624 | { } | |
1625 | ||
1626 | void | |
1627 | set_final_data_size(); | |
1628 | ||
1629 | // Write out the data. There is nothing to do here. | |
1630 | void | |
1631 | do_write(Output_file*) | |
1632 | { } | |
1633 | ||
7d9e3d98 ILT |
1634 | // Write to a map file. |
1635 | void | |
1636 | do_print_to_mapfile(Mapfile* mapfile) const | |
1637 | { mapfile->print_output_data(this, _("** relocs")); } | |
1638 | ||
6a74a719 ILT |
1639 | private: |
1640 | // The relocs associated with this input section. | |
1641 | Relocatable_relocs* rr_; | |
1642 | }; | |
1643 | ||
1644 | // Handle a GROUP section. | |
1645 | ||
1646 | template<int size, bool big_endian> | |
1647 | class Output_data_group : public Output_section_data | |
1648 | { | |
1649 | public: | |
8825ac63 | 1650 | // The constructor clears *INPUT_SHNDXES. |
6a74a719 ILT |
1651 | Output_data_group(Sized_relobj<size, big_endian>* relobj, |
1652 | section_size_type entry_count, | |
8825ac63 ILT |
1653 | elfcpp::Elf_Word flags, |
1654 | std::vector<unsigned int>* input_shndxes); | |
6a74a719 ILT |
1655 | |
1656 | void | |
1657 | do_write(Output_file*); | |
1658 | ||
7d9e3d98 ILT |
1659 | // Write to a map file. |
1660 | void | |
1661 | do_print_to_mapfile(Mapfile* mapfile) const | |
1662 | { mapfile->print_output_data(this, _("** group")); } | |
1663 | ||
20e6d0d6 DK |
1664 | // Set final data size. |
1665 | void | |
1666 | set_final_data_size() | |
1667 | { this->set_data_size((this->input_shndxes_.size() + 1) * 4); } | |
1668 | ||
6a74a719 ILT |
1669 | private: |
1670 | // The input object. | |
1671 | Sized_relobj<size, big_endian>* relobj_; | |
1672 | // The group flag word. | |
1673 | elfcpp::Elf_Word flags_; | |
1674 | // The section indexes of the input sections in this group. | |
8825ac63 | 1675 | std::vector<unsigned int> input_shndxes_; |
6a74a719 ILT |
1676 | }; |
1677 | ||
dbe717ef ILT |
1678 | // Output_data_got is used to manage a GOT. Each entry in the GOT is |
1679 | // for one symbol--either a global symbol or a local symbol in an | |
ead1e424 | 1680 | // object. The target specific code adds entries to the GOT as |
dbe717ef | 1681 | // needed. |
ead1e424 ILT |
1682 | |
1683 | template<int size, bool big_endian> | |
27bc2bce | 1684 | class Output_data_got : public Output_section_data_build |
ead1e424 ILT |
1685 | { |
1686 | public: | |
1687 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
7bf1f802 ILT |
1688 | typedef Output_data_reloc<elfcpp::SHT_REL, true, size, big_endian> Rel_dyn; |
1689 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
ead1e424 | 1690 | |
7e1edb90 | 1691 | Output_data_got() |
27bc2bce | 1692 | : Output_section_data_build(Output_data::default_alignment_for_size(size)), |
730cdc88 | 1693 | entries_() |
ead1e424 ILT |
1694 | { } |
1695 | ||
dbe717ef ILT |
1696 | // Add an entry for a global symbol to the GOT. Return true if this |
1697 | // is a new GOT entry, false if the symbol was already in the GOT. | |
1698 | bool | |
0a65a3a7 | 1699 | add_global(Symbol* gsym, unsigned int got_type); |
ead1e424 | 1700 | |
7bf1f802 ILT |
1701 | // Add an entry for a global symbol to the GOT, and add a dynamic |
1702 | // relocation of type R_TYPE for the GOT entry. | |
1703 | void | |
0a65a3a7 CC |
1704 | add_global_with_rel(Symbol* gsym, unsigned int got_type, |
1705 | Rel_dyn* rel_dyn, unsigned int r_type); | |
7bf1f802 ILT |
1706 | |
1707 | void | |
0a65a3a7 CC |
1708 | add_global_with_rela(Symbol* gsym, unsigned int got_type, |
1709 | Rela_dyn* rela_dyn, unsigned int r_type); | |
1710 | ||
1711 | // Add a pair of entries for a global symbol to the GOT, and add | |
1712 | // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. | |
1713 | void | |
1714 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
1715 | Rel_dyn* rel_dyn, unsigned int r_type_1, | |
1716 | unsigned int r_type_2); | |
1717 | ||
1718 | void | |
1719 | add_global_pair_with_rela(Symbol* gsym, unsigned int got_type, | |
1720 | Rela_dyn* rela_dyn, unsigned int r_type_1, | |
1721 | unsigned int r_type_2); | |
7bf1f802 | 1722 | |
e727fa71 ILT |
1723 | // Add an entry for a local symbol to the GOT. This returns true if |
1724 | // this is a new GOT entry, false if the symbol already has a GOT | |
1725 | // entry. | |
1726 | bool | |
0a65a3a7 CC |
1727 | add_local(Sized_relobj<size, big_endian>* object, unsigned int sym_index, |
1728 | unsigned int got_type); | |
ead1e424 | 1729 | |
0a65a3a7 | 1730 | // Add an entry for a local symbol to the GOT, and add a dynamic |
7bf1f802 ILT |
1731 | // relocation of type R_TYPE for the GOT entry. |
1732 | void | |
1733 | add_local_with_rel(Sized_relobj<size, big_endian>* object, | |
0a65a3a7 CC |
1734 | unsigned int sym_index, unsigned int got_type, |
1735 | Rel_dyn* rel_dyn, unsigned int r_type); | |
7bf1f802 ILT |
1736 | |
1737 | void | |
1738 | add_local_with_rela(Sized_relobj<size, big_endian>* object, | |
0a65a3a7 CC |
1739 | unsigned int sym_index, unsigned int got_type, |
1740 | Rela_dyn* rela_dyn, unsigned int r_type); | |
07f397ab | 1741 | |
0a65a3a7 CC |
1742 | // Add a pair of entries for a local symbol to the GOT, and add |
1743 | // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. | |
7bf1f802 | 1744 | void |
0a65a3a7 CC |
1745 | add_local_pair_with_rel(Sized_relobj<size, big_endian>* object, |
1746 | unsigned int sym_index, unsigned int shndx, | |
1747 | unsigned int got_type, Rel_dyn* rel_dyn, | |
1748 | unsigned int r_type_1, unsigned int r_type_2); | |
7bf1f802 ILT |
1749 | |
1750 | void | |
0a65a3a7 CC |
1751 | add_local_pair_with_rela(Sized_relobj<size, big_endian>* object, |
1752 | unsigned int sym_index, unsigned int shndx, | |
1753 | unsigned int got_type, Rela_dyn* rela_dyn, | |
1754 | unsigned int r_type_1, unsigned int r_type_2); | |
7bf1f802 | 1755 | |
ead1e424 ILT |
1756 | // Add a constant to the GOT. This returns the offset of the new |
1757 | // entry from the start of the GOT. | |
1758 | unsigned int | |
1759 | add_constant(Valtype constant) | |
1760 | { | |
1761 | this->entries_.push_back(Got_entry(constant)); | |
1762 | this->set_got_size(); | |
1763 | return this->last_got_offset(); | |
1764 | } | |
1765 | ||
27bc2bce | 1766 | protected: |
ead1e424 ILT |
1767 | // Write out the GOT table. |
1768 | void | |
1769 | do_write(Output_file*); | |
1770 | ||
7d9e3d98 ILT |
1771 | // Write to a map file. |
1772 | void | |
1773 | do_print_to_mapfile(Mapfile* mapfile) const | |
1774 | { mapfile->print_output_data(this, _("** GOT")); } | |
1775 | ||
ead1e424 ILT |
1776 | private: |
1777 | // This POD class holds a single GOT entry. | |
1778 | class Got_entry | |
1779 | { | |
1780 | public: | |
1781 | // Create a zero entry. | |
1782 | Got_entry() | |
1783 | : local_sym_index_(CONSTANT_CODE) | |
1784 | { this->u_.constant = 0; } | |
1785 | ||
1786 | // Create a global symbol entry. | |
a3ad94ed | 1787 | explicit Got_entry(Symbol* gsym) |
ead1e424 ILT |
1788 | : local_sym_index_(GSYM_CODE) |
1789 | { this->u_.gsym = gsym; } | |
1790 | ||
1791 | // Create a local symbol entry. | |
e727fa71 ILT |
1792 | Got_entry(Sized_relobj<size, big_endian>* object, |
1793 | unsigned int local_sym_index) | |
ead1e424 ILT |
1794 | : local_sym_index_(local_sym_index) |
1795 | { | |
a3ad94ed ILT |
1796 | gold_assert(local_sym_index != GSYM_CODE |
1797 | && local_sym_index != CONSTANT_CODE); | |
ead1e424 ILT |
1798 | this->u_.object = object; |
1799 | } | |
1800 | ||
1801 | // Create a constant entry. The constant is a host value--it will | |
1802 | // be swapped, if necessary, when it is written out. | |
a3ad94ed | 1803 | explicit Got_entry(Valtype constant) |
ead1e424 ILT |
1804 | : local_sym_index_(CONSTANT_CODE) |
1805 | { this->u_.constant = constant; } | |
1806 | ||
1807 | // Write the GOT entry to an output view. | |
1808 | void | |
7e1edb90 | 1809 | write(unsigned char* pov) const; |
ead1e424 ILT |
1810 | |
1811 | private: | |
1812 | enum | |
1813 | { | |
1814 | GSYM_CODE = -1U, | |
1815 | CONSTANT_CODE = -2U | |
1816 | }; | |
1817 | ||
1818 | union | |
1819 | { | |
1820 | // For a local symbol, the object. | |
e727fa71 | 1821 | Sized_relobj<size, big_endian>* object; |
ead1e424 ILT |
1822 | // For a global symbol, the symbol. |
1823 | Symbol* gsym; | |
1824 | // For a constant, the constant. | |
1825 | Valtype constant; | |
1826 | } u_; | |
c06b7b0b ILT |
1827 | // For a local symbol, the local symbol index. This is GSYM_CODE |
1828 | // for a global symbol, or CONSTANT_CODE for a constant. | |
ead1e424 ILT |
1829 | unsigned int local_sym_index_; |
1830 | }; | |
1831 | ||
1832 | typedef std::vector<Got_entry> Got_entries; | |
1833 | ||
1834 | // Return the offset into the GOT of GOT entry I. | |
1835 | unsigned int | |
1836 | got_offset(unsigned int i) const | |
1837 | { return i * (size / 8); } | |
1838 | ||
1839 | // Return the offset into the GOT of the last entry added. | |
1840 | unsigned int | |
1841 | last_got_offset() const | |
1842 | { return this->got_offset(this->entries_.size() - 1); } | |
1843 | ||
1844 | // Set the size of the section. | |
1845 | void | |
1846 | set_got_size() | |
27bc2bce | 1847 | { this->set_current_data_size(this->got_offset(this->entries_.size())); } |
ead1e424 ILT |
1848 | |
1849 | // The list of GOT entries. | |
1850 | Got_entries entries_; | |
1851 | }; | |
1852 | ||
a3ad94ed ILT |
1853 | // Output_data_dynamic is used to hold the data in SHT_DYNAMIC |
1854 | // section. | |
1855 | ||
1856 | class Output_data_dynamic : public Output_section_data | |
1857 | { | |
1858 | public: | |
9025d29d | 1859 | Output_data_dynamic(Stringpool* pool) |
730cdc88 | 1860 | : Output_section_data(Output_data::default_alignment()), |
9025d29d | 1861 | entries_(), pool_(pool) |
a3ad94ed ILT |
1862 | { } |
1863 | ||
1864 | // Add a new dynamic entry with a fixed numeric value. | |
1865 | void | |
1866 | add_constant(elfcpp::DT tag, unsigned int val) | |
1867 | { this->add_entry(Dynamic_entry(tag, val)); } | |
1868 | ||
16649710 | 1869 | // Add a new dynamic entry with the address of output data. |
a3ad94ed | 1870 | void |
16649710 ILT |
1871 | add_section_address(elfcpp::DT tag, const Output_data* od) |
1872 | { this->add_entry(Dynamic_entry(tag, od, false)); } | |
a3ad94ed | 1873 | |
c2b45e22 CC |
1874 | // Add a new dynamic entry with the address of output data |
1875 | // plus a constant offset. | |
1876 | void | |
1877 | add_section_plus_offset(elfcpp::DT tag, const Output_data* od, | |
1878 | unsigned int offset) | |
1879 | { this->add_entry(Dynamic_entry(tag, od, offset)); } | |
1880 | ||
16649710 | 1881 | // Add a new dynamic entry with the size of output data. |
a3ad94ed | 1882 | void |
16649710 ILT |
1883 | add_section_size(elfcpp::DT tag, const Output_data* od) |
1884 | { this->add_entry(Dynamic_entry(tag, od, true)); } | |
a3ad94ed ILT |
1885 | |
1886 | // Add a new dynamic entry with the address of a symbol. | |
1887 | void | |
16649710 | 1888 | add_symbol(elfcpp::DT tag, const Symbol* sym) |
a3ad94ed ILT |
1889 | { this->add_entry(Dynamic_entry(tag, sym)); } |
1890 | ||
1891 | // Add a new dynamic entry with a string. | |
1892 | void | |
1893 | add_string(elfcpp::DT tag, const char* str) | |
cfd73a4e | 1894 | { this->add_entry(Dynamic_entry(tag, this->pool_->add(str, true, NULL))); } |
a3ad94ed | 1895 | |
41f542e7 ILT |
1896 | void |
1897 | add_string(elfcpp::DT tag, const std::string& str) | |
1898 | { this->add_string(tag, str.c_str()); } | |
1899 | ||
27bc2bce ILT |
1900 | protected: |
1901 | // Adjust the output section to set the entry size. | |
1902 | void | |
1903 | do_adjust_output_section(Output_section*); | |
1904 | ||
a3ad94ed ILT |
1905 | // Set the final data size. |
1906 | void | |
27bc2bce | 1907 | set_final_data_size(); |
a3ad94ed ILT |
1908 | |
1909 | // Write out the dynamic entries. | |
1910 | void | |
1911 | do_write(Output_file*); | |
1912 | ||
7d9e3d98 ILT |
1913 | // Write to a map file. |
1914 | void | |
1915 | do_print_to_mapfile(Mapfile* mapfile) const | |
1916 | { mapfile->print_output_data(this, _("** dynamic")); } | |
1917 | ||
a3ad94ed ILT |
1918 | private: |
1919 | // This POD class holds a single dynamic entry. | |
1920 | class Dynamic_entry | |
1921 | { | |
1922 | public: | |
1923 | // Create an entry with a fixed numeric value. | |
1924 | Dynamic_entry(elfcpp::DT tag, unsigned int val) | |
c2b45e22 | 1925 | : tag_(tag), offset_(DYNAMIC_NUMBER) |
a3ad94ed ILT |
1926 | { this->u_.val = val; } |
1927 | ||
1928 | // Create an entry with the size or address of a section. | |
16649710 | 1929 | Dynamic_entry(elfcpp::DT tag, const Output_data* od, bool section_size) |
a3ad94ed | 1930 | : tag_(tag), |
c2b45e22 CC |
1931 | offset_(section_size |
1932 | ? DYNAMIC_SECTION_SIZE | |
1933 | : DYNAMIC_SECTION_ADDRESS) | |
1934 | { this->u_.od = od; } | |
1935 | ||
1936 | // Create an entry with the address of a section plus a constant offset. | |
1937 | Dynamic_entry(elfcpp::DT tag, const Output_data* od, unsigned int offset) | |
1938 | : tag_(tag), | |
1939 | offset_(offset) | |
16649710 | 1940 | { this->u_.od = od; } |
a3ad94ed ILT |
1941 | |
1942 | // Create an entry with the address of a symbol. | |
16649710 | 1943 | Dynamic_entry(elfcpp::DT tag, const Symbol* sym) |
c2b45e22 | 1944 | : tag_(tag), offset_(DYNAMIC_SYMBOL) |
a3ad94ed ILT |
1945 | { this->u_.sym = sym; } |
1946 | ||
1947 | // Create an entry with a string. | |
1948 | Dynamic_entry(elfcpp::DT tag, const char* str) | |
c2b45e22 | 1949 | : tag_(tag), offset_(DYNAMIC_STRING) |
a3ad94ed ILT |
1950 | { this->u_.str = str; } |
1951 | ||
20e6d0d6 DK |
1952 | // Return the tag of this entry. |
1953 | elfcpp::DT | |
1954 | tag() const | |
1955 | { return this->tag_; } | |
1956 | ||
a3ad94ed ILT |
1957 | // Write the dynamic entry to an output view. |
1958 | template<int size, bool big_endian> | |
1959 | void | |
7d1a9ebb | 1960 | write(unsigned char* pov, const Stringpool*) const; |
a3ad94ed ILT |
1961 | |
1962 | private: | |
c2b45e22 | 1963 | // Classification is encoded in the OFFSET field. |
a3ad94ed ILT |
1964 | enum Classification |
1965 | { | |
a3ad94ed | 1966 | // Section address. |
c2b45e22 CC |
1967 | DYNAMIC_SECTION_ADDRESS = 0, |
1968 | // Number. | |
1969 | DYNAMIC_NUMBER = -1U, | |
a3ad94ed | 1970 | // Section size. |
c2b45e22 | 1971 | DYNAMIC_SECTION_SIZE = -2U, |
a3ad94ed | 1972 | // Symbol adress. |
c2b45e22 | 1973 | DYNAMIC_SYMBOL = -3U, |
a3ad94ed | 1974 | // String. |
c2b45e22 CC |
1975 | DYNAMIC_STRING = -4U |
1976 | // Any other value indicates a section address plus OFFSET. | |
a3ad94ed ILT |
1977 | }; |
1978 | ||
1979 | union | |
1980 | { | |
1981 | // For DYNAMIC_NUMBER. | |
1982 | unsigned int val; | |
c2b45e22 | 1983 | // For DYNAMIC_SECTION_SIZE and section address plus OFFSET. |
16649710 | 1984 | const Output_data* od; |
a3ad94ed | 1985 | // For DYNAMIC_SYMBOL. |
16649710 | 1986 | const Symbol* sym; |
a3ad94ed ILT |
1987 | // For DYNAMIC_STRING. |
1988 | const char* str; | |
1989 | } u_; | |
1990 | // The dynamic tag. | |
1991 | elfcpp::DT tag_; | |
c2b45e22 CC |
1992 | // The type of entry (Classification) or offset within a section. |
1993 | unsigned int offset_; | |
a3ad94ed ILT |
1994 | }; |
1995 | ||
1996 | // Add an entry to the list. | |
1997 | void | |
1998 | add_entry(const Dynamic_entry& entry) | |
1999 | { this->entries_.push_back(entry); } | |
2000 | ||
2001 | // Sized version of write function. | |
2002 | template<int size, bool big_endian> | |
2003 | void | |
2004 | sized_write(Output_file* of); | |
2005 | ||
2006 | // The type of the list of entries. | |
2007 | typedef std::vector<Dynamic_entry> Dynamic_entries; | |
2008 | ||
a3ad94ed ILT |
2009 | // The entries. |
2010 | Dynamic_entries entries_; | |
2011 | // The pool used for strings. | |
2012 | Stringpool* pool_; | |
2013 | }; | |
2014 | ||
d491d34e ILT |
2015 | // Output_symtab_xindex is used to handle SHT_SYMTAB_SHNDX sections, |
2016 | // which may be required if the object file has more than | |
2017 | // SHN_LORESERVE sections. | |
2018 | ||
2019 | class Output_symtab_xindex : public Output_section_data | |
2020 | { | |
2021 | public: | |
2022 | Output_symtab_xindex(size_t symcount) | |
20e6d0d6 | 2023 | : Output_section_data(symcount * 4, 4, true), |
d491d34e ILT |
2024 | entries_() |
2025 | { } | |
2026 | ||
2027 | // Add an entry: symbol number SYMNDX has section SHNDX. | |
2028 | void | |
2029 | add(unsigned int symndx, unsigned int shndx) | |
2030 | { this->entries_.push_back(std::make_pair(symndx, shndx)); } | |
2031 | ||
2032 | protected: | |
2033 | void | |
2034 | do_write(Output_file*); | |
2035 | ||
7d9e3d98 ILT |
2036 | // Write to a map file. |
2037 | void | |
2038 | do_print_to_mapfile(Mapfile* mapfile) const | |
2039 | { mapfile->print_output_data(this, _("** symtab xindex")); } | |
2040 | ||
d491d34e ILT |
2041 | private: |
2042 | template<bool big_endian> | |
2043 | void | |
2044 | endian_do_write(unsigned char*); | |
2045 | ||
2046 | // It is likely that most symbols will not require entries. Rather | |
2047 | // than keep a vector for all symbols, we keep pairs of symbol index | |
2048 | // and section index. | |
2049 | typedef std::vector<std::pair<unsigned int, unsigned int> > Xindex_entries; | |
2050 | ||
2051 | // The entries we need. | |
2052 | Xindex_entries entries_; | |
2053 | }; | |
2054 | ||
20e6d0d6 | 2055 | // A relaxed input section. |
c0a62865 | 2056 | class Output_relaxed_input_section : public Output_section_data_build |
20e6d0d6 DK |
2057 | { |
2058 | public: | |
2059 | // We would like to call relobj->section_addralign(shndx) to get the | |
2060 | // alignment but we do not want the constructor to fail. So callers | |
2061 | // are repsonsible for ensuring that. | |
2062 | Output_relaxed_input_section(Relobj* relobj, unsigned int shndx, | |
2063 | uint64_t addralign) | |
c0a62865 | 2064 | : Output_section_data_build(addralign), relobj_(relobj), shndx_(shndx) |
20e6d0d6 DK |
2065 | { } |
2066 | ||
2067 | // Return the Relobj of this relaxed input section. | |
2068 | Relobj* | |
2069 | relobj() const | |
2070 | { return this->relobj_; } | |
2071 | ||
2072 | // Return the section index of this relaxed input section. | |
2073 | unsigned int | |
2074 | shndx() const | |
2075 | { return this->shndx_; } | |
2076 | ||
2077 | private: | |
2078 | Relobj* relobj_; | |
2079 | unsigned int shndx_; | |
2080 | }; | |
2081 | ||
a2fb1b05 ILT |
2082 | // An output section. We don't expect to have too many output |
2083 | // sections, so we don't bother to do a template on the size. | |
2084 | ||
54dc6425 | 2085 | class Output_section : public Output_data |
a2fb1b05 ILT |
2086 | { |
2087 | public: | |
2088 | // Create an output section, giving the name, type, and flags. | |
96803768 | 2089 | Output_section(const char* name, elfcpp::Elf_Word, elfcpp::Elf_Xword); |
54dc6425 | 2090 | virtual ~Output_section(); |
a2fb1b05 | 2091 | |
ead1e424 | 2092 | // Add a new input section SHNDX, named NAME, with header SHDR, from |
730cdc88 | 2093 | // object OBJECT. RELOC_SHNDX is the index of a relocation section |
eff45813 | 2094 | // which applies to this section, or 0 if none, or -1 if more than |
a445fddf ILT |
2095 | // one. HAVE_SECTIONS_SCRIPT is true if we have a SECTIONS clause |
2096 | // in a linker script; in that case we need to keep track of input | |
2097 | // sections associated with an output section. Return the offset | |
2098 | // within the output section. | |
a2fb1b05 ILT |
2099 | template<int size, bool big_endian> |
2100 | off_t | |
730cdc88 ILT |
2101 | add_input_section(Sized_relobj<size, big_endian>* object, unsigned int shndx, |
2102 | const char *name, | |
2103 | const elfcpp::Shdr<size, big_endian>& shdr, | |
a445fddf | 2104 | unsigned int reloc_shndx, bool have_sections_script); |
a2fb1b05 | 2105 | |
b8e6aad9 | 2106 | // Add generated data POSD to this output section. |
c06b7b0b | 2107 | void |
ead1e424 ILT |
2108 | add_output_section_data(Output_section_data* posd); |
2109 | ||
c0a62865 DK |
2110 | // Add a relaxed input section PORIS to this output section. |
2111 | void | |
2112 | add_relaxed_input_section(Output_relaxed_input_section* poris); | |
2113 | ||
a2fb1b05 ILT |
2114 | // Return the section name. |
2115 | const char* | |
2116 | name() const | |
2117 | { return this->name_; } | |
2118 | ||
2119 | // Return the section type. | |
2120 | elfcpp::Elf_Word | |
2121 | type() const | |
2122 | { return this->type_; } | |
2123 | ||
2124 | // Return the section flags. | |
2125 | elfcpp::Elf_Xword | |
2126 | flags() const | |
2127 | { return this->flags_; } | |
2128 | ||
154e0e9a ILT |
2129 | // Update the output section flags based on input section flags. |
2130 | void | |
9c547ec3 | 2131 | update_flags_for_input_section(elfcpp::Elf_Xword flags); |
154e0e9a | 2132 | |
a3ad94ed ILT |
2133 | // Return the entsize field. |
2134 | uint64_t | |
2135 | entsize() const | |
2136 | { return this->entsize_; } | |
2137 | ||
61ba1cf9 ILT |
2138 | // Set the entsize field. |
2139 | void | |
16649710 | 2140 | set_entsize(uint64_t v); |
61ba1cf9 | 2141 | |
a445fddf ILT |
2142 | // Set the load address. |
2143 | void | |
2144 | set_load_address(uint64_t load_address) | |
2145 | { | |
2146 | this->load_address_ = load_address; | |
2147 | this->has_load_address_ = true; | |
2148 | } | |
2149 | ||
16649710 ILT |
2150 | // Set the link field to the output section index of a section. |
2151 | void | |
14b31740 | 2152 | set_link_section(const Output_data* od) |
16649710 ILT |
2153 | { |
2154 | gold_assert(this->link_ == 0 | |
2155 | && !this->should_link_to_symtab_ | |
2156 | && !this->should_link_to_dynsym_); | |
2157 | this->link_section_ = od; | |
2158 | } | |
2159 | ||
2160 | // Set the link field to a constant. | |
61ba1cf9 ILT |
2161 | void |
2162 | set_link(unsigned int v) | |
16649710 ILT |
2163 | { |
2164 | gold_assert(this->link_section_ == NULL | |
2165 | && !this->should_link_to_symtab_ | |
2166 | && !this->should_link_to_dynsym_); | |
2167 | this->link_ = v; | |
2168 | } | |
61ba1cf9 | 2169 | |
16649710 ILT |
2170 | // Record that this section should link to the normal symbol table. |
2171 | void | |
2172 | set_should_link_to_symtab() | |
2173 | { | |
2174 | gold_assert(this->link_section_ == NULL | |
2175 | && this->link_ == 0 | |
2176 | && !this->should_link_to_dynsym_); | |
2177 | this->should_link_to_symtab_ = true; | |
2178 | } | |
2179 | ||
2180 | // Record that this section should link to the dynamic symbol table. | |
2181 | void | |
2182 | set_should_link_to_dynsym() | |
2183 | { | |
2184 | gold_assert(this->link_section_ == NULL | |
2185 | && this->link_ == 0 | |
2186 | && !this->should_link_to_symtab_); | |
2187 | this->should_link_to_dynsym_ = true; | |
2188 | } | |
2189 | ||
2190 | // Return the info field. | |
2191 | unsigned int | |
2192 | info() const | |
2193 | { | |
755ab8af ILT |
2194 | gold_assert(this->info_section_ == NULL |
2195 | && this->info_symndx_ == NULL); | |
16649710 ILT |
2196 | return this->info_; |
2197 | } | |
2198 | ||
2199 | // Set the info field to the output section index of a section. | |
2200 | void | |
755ab8af | 2201 | set_info_section(const Output_section* os) |
16649710 | 2202 | { |
755ab8af ILT |
2203 | gold_assert((this->info_section_ == NULL |
2204 | || (this->info_section_ == os | |
2205 | && this->info_uses_section_index_)) | |
2206 | && this->info_symndx_ == NULL | |
2207 | && this->info_ == 0); | |
2208 | this->info_section_ = os; | |
2209 | this->info_uses_section_index_= true; | |
16649710 ILT |
2210 | } |
2211 | ||
6a74a719 ILT |
2212 | // Set the info field to the symbol table index of a symbol. |
2213 | void | |
2214 | set_info_symndx(const Symbol* sym) | |
2215 | { | |
755ab8af ILT |
2216 | gold_assert(this->info_section_ == NULL |
2217 | && (this->info_symndx_ == NULL | |
2218 | || this->info_symndx_ == sym) | |
2219 | && this->info_ == 0); | |
6a74a719 ILT |
2220 | this->info_symndx_ = sym; |
2221 | } | |
2222 | ||
755ab8af ILT |
2223 | // Set the info field to the symbol table index of a section symbol. |
2224 | void | |
2225 | set_info_section_symndx(const Output_section* os) | |
2226 | { | |
2227 | gold_assert((this->info_section_ == NULL | |
2228 | || (this->info_section_ == os | |
2229 | && !this->info_uses_section_index_)) | |
2230 | && this->info_symndx_ == NULL | |
2231 | && this->info_ == 0); | |
2232 | this->info_section_ = os; | |
2233 | this->info_uses_section_index_ = false; | |
2234 | } | |
2235 | ||
16649710 | 2236 | // Set the info field to a constant. |
61ba1cf9 ILT |
2237 | void |
2238 | set_info(unsigned int v) | |
16649710 | 2239 | { |
755ab8af ILT |
2240 | gold_assert(this->info_section_ == NULL |
2241 | && this->info_symndx_ == NULL | |
2242 | && (this->info_ == 0 | |
2243 | || this->info_ == v)); | |
16649710 ILT |
2244 | this->info_ = v; |
2245 | } | |
61ba1cf9 ILT |
2246 | |
2247 | // Set the addralign field. | |
2248 | void | |
2249 | set_addralign(uint64_t v) | |
2250 | { this->addralign_ = v; } | |
2251 | ||
d491d34e ILT |
2252 | // Whether the output section index has been set. |
2253 | bool | |
2254 | has_out_shndx() const | |
2255 | { return this->out_shndx_ != -1U; } | |
2256 | ||
c06b7b0b ILT |
2257 | // Indicate that we need a symtab index. |
2258 | void | |
2259 | set_needs_symtab_index() | |
2260 | { this->needs_symtab_index_ = true; } | |
2261 | ||
2262 | // Return whether we need a symtab index. | |
2263 | bool | |
2264 | needs_symtab_index() const | |
2265 | { return this->needs_symtab_index_; } | |
2266 | ||
2267 | // Get the symtab index. | |
2268 | unsigned int | |
2269 | symtab_index() const | |
2270 | { | |
a3ad94ed | 2271 | gold_assert(this->symtab_index_ != 0); |
c06b7b0b ILT |
2272 | return this->symtab_index_; |
2273 | } | |
2274 | ||
2275 | // Set the symtab index. | |
2276 | void | |
2277 | set_symtab_index(unsigned int index) | |
2278 | { | |
a3ad94ed | 2279 | gold_assert(index != 0); |
c06b7b0b ILT |
2280 | this->symtab_index_ = index; |
2281 | } | |
2282 | ||
2283 | // Indicate that we need a dynsym index. | |
2284 | void | |
2285 | set_needs_dynsym_index() | |
2286 | { this->needs_dynsym_index_ = true; } | |
2287 | ||
2288 | // Return whether we need a dynsym index. | |
2289 | bool | |
2290 | needs_dynsym_index() const | |
2291 | { return this->needs_dynsym_index_; } | |
2292 | ||
2293 | // Get the dynsym index. | |
2294 | unsigned int | |
2295 | dynsym_index() const | |
2296 | { | |
a3ad94ed | 2297 | gold_assert(this->dynsym_index_ != 0); |
c06b7b0b ILT |
2298 | return this->dynsym_index_; |
2299 | } | |
2300 | ||
2301 | // Set the dynsym index. | |
2302 | void | |
2303 | set_dynsym_index(unsigned int index) | |
2304 | { | |
a3ad94ed | 2305 | gold_assert(index != 0); |
c06b7b0b ILT |
2306 | this->dynsym_index_ = index; |
2307 | } | |
2308 | ||
2fd32231 ILT |
2309 | // Return whether the input sections sections attachd to this output |
2310 | // section may require sorting. This is used to handle constructor | |
2311 | // priorities compatibly with GNU ld. | |
2312 | bool | |
2313 | may_sort_attached_input_sections() const | |
2314 | { return this->may_sort_attached_input_sections_; } | |
2315 | ||
2316 | // Record that the input sections attached to this output section | |
2317 | // may require sorting. | |
2318 | void | |
2319 | set_may_sort_attached_input_sections() | |
2320 | { this->may_sort_attached_input_sections_ = true; } | |
2321 | ||
2322 | // Return whether the input sections attached to this output section | |
2323 | // require sorting. This is used to handle constructor priorities | |
2324 | // compatibly with GNU ld. | |
2325 | bool | |
2326 | must_sort_attached_input_sections() const | |
2327 | { return this->must_sort_attached_input_sections_; } | |
2328 | ||
2329 | // Record that the input sections attached to this output section | |
2330 | // require sorting. | |
2331 | void | |
2332 | set_must_sort_attached_input_sections() | |
2333 | { this->must_sort_attached_input_sections_ = true; } | |
2334 | ||
9f1d377b ILT |
2335 | // Return whether this section holds relro data--data which has |
2336 | // dynamic relocations but which may be marked read-only after the | |
2337 | // dynamic relocations have been completed. | |
2338 | bool | |
2339 | is_relro() const | |
2340 | { return this->is_relro_; } | |
2341 | ||
2342 | // Record that this section holds relro data. | |
2343 | void | |
2344 | set_is_relro() | |
2345 | { this->is_relro_ = true; } | |
2346 | ||
2d924fd9 ILT |
2347 | // Record that this section does not hold relro data. |
2348 | void | |
2349 | clear_is_relro() | |
2350 | { this->is_relro_ = false; } | |
2351 | ||
9f1d377b ILT |
2352 | // True if this section holds relro local data--relro data for which |
2353 | // the dynamic relocations are all RELATIVE relocations. | |
2354 | bool | |
2355 | is_relro_local() const | |
2356 | { return this->is_relro_local_; } | |
2357 | ||
2358 | // Record that this section holds relro local data. | |
2359 | void | |
2360 | set_is_relro_local() | |
2361 | { this->is_relro_local_ = true; } | |
2362 | ||
8a5e3e08 ILT |
2363 | // True if this is a small section: a section which holds small |
2364 | // variables. | |
2365 | bool | |
2366 | is_small_section() const | |
2367 | { return this->is_small_section_; } | |
2368 | ||
2369 | // Record that this is a small section. | |
2370 | void | |
2371 | set_is_small_section() | |
2372 | { this->is_small_section_ = true; } | |
2373 | ||
2374 | // True if this is a large section: a section which holds large | |
2375 | // variables. | |
2376 | bool | |
2377 | is_large_section() const | |
2378 | { return this->is_large_section_; } | |
2379 | ||
2380 | // Record that this is a large section. | |
2381 | void | |
2382 | set_is_large_section() | |
2383 | { this->is_large_section_ = true; } | |
2384 | ||
2385 | // True if this is a large data (not BSS) section. | |
2386 | bool | |
2387 | is_large_data_section() | |
2388 | { return this->is_large_section_ && this->type_ != elfcpp::SHT_NOBITS; } | |
2389 | ||
730cdc88 ILT |
2390 | // Return whether this section should be written after all the input |
2391 | // sections are complete. | |
2392 | bool | |
2393 | after_input_sections() const | |
2394 | { return this->after_input_sections_; } | |
2395 | ||
2396 | // Record that this section should be written after all the input | |
2397 | // sections are complete. | |
2398 | void | |
2399 | set_after_input_sections() | |
2400 | { this->after_input_sections_ = true; } | |
2401 | ||
27bc2bce ILT |
2402 | // Return whether this section requires postprocessing after all |
2403 | // relocations have been applied. | |
2404 | bool | |
2405 | requires_postprocessing() const | |
2406 | { return this->requires_postprocessing_; } | |
2407 | ||
96803768 ILT |
2408 | // If a section requires postprocessing, return the buffer to use. |
2409 | unsigned char* | |
2410 | postprocessing_buffer() const | |
2411 | { | |
2412 | gold_assert(this->postprocessing_buffer_ != NULL); | |
2413 | return this->postprocessing_buffer_; | |
2414 | } | |
2415 | ||
2416 | // If a section requires postprocessing, create the buffer to use. | |
27bc2bce | 2417 | void |
96803768 ILT |
2418 | create_postprocessing_buffer(); |
2419 | ||
2420 | // If a section requires postprocessing, this is the size of the | |
2421 | // buffer to which relocations should be applied. | |
2422 | off_t | |
2423 | postprocessing_buffer_size() const | |
2424 | { return this->current_data_size_for_child(); } | |
27bc2bce | 2425 | |
755ab8af ILT |
2426 | // Modify the section name. This is only permitted for an |
2427 | // unallocated section, and only before the size has been finalized. | |
2428 | // Otherwise the name will not get into Layout::namepool_. | |
2429 | void | |
2430 | set_name(const char* newname) | |
2431 | { | |
2432 | gold_assert((this->flags_ & elfcpp::SHF_ALLOC) == 0); | |
2433 | gold_assert(!this->is_data_size_valid()); | |
2434 | this->name_ = newname; | |
2435 | } | |
2436 | ||
730cdc88 ILT |
2437 | // Return whether the offset OFFSET in the input section SHNDX in |
2438 | // object OBJECT is being included in the link. | |
2439 | bool | |
2440 | is_input_address_mapped(const Relobj* object, unsigned int shndx, | |
2441 | off_t offset) const; | |
2442 | ||
2443 | // Return the offset within the output section of OFFSET relative to | |
2444 | // the start of input section SHNDX in object OBJECT. | |
8383303e ILT |
2445 | section_offset_type |
2446 | output_offset(const Relobj* object, unsigned int shndx, | |
2447 | section_offset_type offset) const; | |
730cdc88 | 2448 | |
b8e6aad9 ILT |
2449 | // Return the output virtual address of OFFSET relative to the start |
2450 | // of input section SHNDX in object OBJECT. | |
2451 | uint64_t | |
2452 | output_address(const Relobj* object, unsigned int shndx, | |
2453 | off_t offset) const; | |
2454 | ||
e29e076a ILT |
2455 | // Look for the merged section for input section SHNDX in object |
2456 | // OBJECT. If found, return true, and set *ADDR to the address of | |
2457 | // the start of the merged section. This is not necessary the | |
2458 | // output offset corresponding to input offset 0 in the section, | |
2459 | // since the section may be mapped arbitrarily. | |
2460 | bool | |
2461 | find_starting_output_address(const Relobj* object, unsigned int shndx, | |
2462 | uint64_t* addr) const; | |
a9a60db6 | 2463 | |
a445fddf ILT |
2464 | // Record that this output section was found in the SECTIONS clause |
2465 | // of a linker script. | |
2466 | void | |
2467 | set_found_in_sections_clause() | |
2468 | { this->found_in_sections_clause_ = true; } | |
2469 | ||
2470 | // Return whether this output section was found in the SECTIONS | |
2471 | // clause of a linker script. | |
2472 | bool | |
2473 | found_in_sections_clause() const | |
2474 | { return this->found_in_sections_clause_; } | |
2475 | ||
27bc2bce ILT |
2476 | // Write the section header into *OPHDR. |
2477 | template<int size, bool big_endian> | |
2478 | void | |
2479 | write_header(const Layout*, const Stringpool*, | |
2480 | elfcpp::Shdr_write<size, big_endian>*) const; | |
2481 | ||
a445fddf ILT |
2482 | // The next few calls are for linker script support. |
2483 | ||
20e6d0d6 DK |
2484 | // We need to export the input sections to linker scripts. Previously |
2485 | // we export a pair of Relobj pointer and section index. We now need to | |
2486 | // handle relaxed input sections as well. So we use this class. | |
2487 | class Simple_input_section | |
2488 | { | |
2489 | private: | |
2490 | static const unsigned int invalid_shndx = static_cast<unsigned int>(-1); | |
2491 | ||
2492 | public: | |
2493 | Simple_input_section(Relobj *relobj, unsigned int shndx) | |
2494 | : shndx_(shndx) | |
2495 | { | |
2496 | gold_assert(shndx != invalid_shndx); | |
2497 | this->u_.relobj = relobj; | |
2498 | } | |
2499 | ||
2500 | Simple_input_section(Output_relaxed_input_section* section) | |
2501 | : shndx_(invalid_shndx) | |
2502 | { this->u_.relaxed_input_section = section; } | |
2503 | ||
2504 | // Whether this is a relaxed section. | |
2505 | bool | |
2506 | is_relaxed_input_section() const | |
2507 | { return this->shndx_ == invalid_shndx; } | |
2508 | ||
2509 | // Return object of an input section. | |
2510 | Relobj* | |
2511 | relobj() const | |
2512 | { | |
2513 | return ((this->shndx_ != invalid_shndx) | |
2514 | ? this->u_.relobj | |
2515 | : this->u_.relaxed_input_section->relobj()); | |
2516 | } | |
2517 | ||
2518 | // Return index of an input section. | |
2519 | unsigned int | |
2520 | shndx() const | |
2521 | { | |
2522 | return ((this->shndx_ != invalid_shndx) | |
2523 | ? this->shndx_ | |
2524 | : this->u_.relaxed_input_section->shndx()); | |
2525 | } | |
2526 | ||
2527 | // Return the Output_relaxed_input_section object of a relaxed section. | |
2528 | Output_relaxed_input_section* | |
2529 | relaxed_input_section() const | |
2530 | { | |
2531 | gold_assert(this->shndx_ == invalid_shndx); | |
2532 | return this->u_.relaxed_input_section; | |
2533 | } | |
2534 | ||
2535 | private: | |
2536 | // Pointer to either an Relobj or an Output_relaxed_input_section. | |
2537 | union | |
2538 | { | |
2539 | Relobj* relobj; | |
2540 | Output_relaxed_input_section* relaxed_input_section; | |
2541 | } u_; | |
2542 | // Section index for an non-relaxed section or invalid_shndx for | |
2543 | // a relaxed section. | |
2544 | unsigned int shndx_; | |
2545 | }; | |
2546 | ||
a445fddf ILT |
2547 | // Store the list of input sections for this Output_section into the |
2548 | // list passed in. This removes the input sections, leaving only | |
2549 | // any Output_section_data elements. This returns the size of those | |
2550 | // Output_section_data elements. ADDRESS is the address of this | |
2551 | // output section. FILL is the fill value to use, in case there are | |
2552 | // any spaces between the remaining Output_section_data elements. | |
2553 | uint64_t | |
2554 | get_input_sections(uint64_t address, const std::string& fill, | |
20e6d0d6 | 2555 | std::list<Simple_input_section>*); |
a445fddf ILT |
2556 | |
2557 | // Add an input section from a script. | |
2558 | void | |
20e6d0d6 | 2559 | add_input_section_for_script(const Simple_input_section& input_section, |
a445fddf ILT |
2560 | off_t data_size, uint64_t addralign); |
2561 | ||
2562 | // Set the current size of the output section. | |
2563 | void | |
2564 | set_current_data_size(off_t size) | |
2565 | { this->set_current_data_size_for_child(size); } | |
2566 | ||
2567 | // Get the current size of the output section. | |
2568 | off_t | |
2569 | current_data_size() const | |
2570 | { return this->current_data_size_for_child(); } | |
2571 | ||
2572 | // End of linker script support. | |
2573 | ||
20e6d0d6 DK |
2574 | // Save states before doing section layout. |
2575 | // This is used for relaxation. | |
2576 | void | |
2577 | save_states(); | |
2578 | ||
2579 | // Restore states prior to section layout. | |
2580 | void | |
2581 | restore_states(); | |
2582 | ||
c0a62865 DK |
2583 | // Convert existing input sections to relaxed input sections. |
2584 | void | |
2585 | convert_input_sections_to_relaxed_sections( | |
2586 | const std::vector<Output_relaxed_input_section*>& sections); | |
2587 | ||
38c5e8b4 ILT |
2588 | // Print merge statistics to stderr. |
2589 | void | |
2590 | print_merge_stats(); | |
2591 | ||
27bc2bce | 2592 | protected: |
77e65537 ILT |
2593 | // Return the output section--i.e., the object itself. |
2594 | Output_section* | |
2595 | do_output_section() | |
2596 | { return this; } | |
2597 | ||
27bc2bce ILT |
2598 | // Return the section index in the output file. |
2599 | unsigned int | |
2600 | do_out_shndx() const | |
2601 | { | |
2602 | gold_assert(this->out_shndx_ != -1U); | |
2603 | return this->out_shndx_; | |
2604 | } | |
2605 | ||
2606 | // Set the output section index. | |
2607 | void | |
2608 | do_set_out_shndx(unsigned int shndx) | |
2609 | { | |
a445fddf | 2610 | gold_assert(this->out_shndx_ == -1U || this->out_shndx_ == shndx); |
27bc2bce ILT |
2611 | this->out_shndx_ = shndx; |
2612 | } | |
2613 | ||
2614 | // Set the final data size of the Output_section. For a typical | |
ead1e424 | 2615 | // Output_section, there is nothing to do, but if there are any |
27bc2bce | 2616 | // Output_section_data objects we need to set their final addresses |
ead1e424 | 2617 | // here. |
96803768 | 2618 | virtual void |
27bc2bce | 2619 | set_final_data_size(); |
ead1e424 | 2620 | |
a445fddf ILT |
2621 | // Reset the address and file offset. |
2622 | void | |
2623 | do_reset_address_and_file_offset(); | |
2624 | ||
20e6d0d6 DK |
2625 | // Return true if address and file offset already have reset values. In |
2626 | // other words, calling reset_address_and_file_offset will not change them. | |
2627 | bool | |
2628 | do_address_and_file_offset_have_reset_values() const; | |
2629 | ||
54dc6425 | 2630 | // Write the data to the file. For a typical Output_section, this |
ead1e424 ILT |
2631 | // does nothing: the data is written out by calling Object::Relocate |
2632 | // on each input object. But if there are any Output_section_data | |
2633 | // objects we do need to write them out here. | |
96803768 | 2634 | virtual void |
ead1e424 | 2635 | do_write(Output_file*); |
54dc6425 | 2636 | |
75f65a3e ILT |
2637 | // Return the address alignment--function required by parent class. |
2638 | uint64_t | |
2639 | do_addralign() const | |
2640 | { return this->addralign_; } | |
2641 | ||
a445fddf ILT |
2642 | // Return whether there is a load address. |
2643 | bool | |
2644 | do_has_load_address() const | |
2645 | { return this->has_load_address_; } | |
2646 | ||
2647 | // Return the load address. | |
2648 | uint64_t | |
2649 | do_load_address() const | |
2650 | { | |
2651 | gold_assert(this->has_load_address_); | |
2652 | return this->load_address_; | |
2653 | } | |
2654 | ||
75f65a3e ILT |
2655 | // Return whether this is an Output_section. |
2656 | bool | |
2657 | do_is_section() const | |
2658 | { return true; } | |
2659 | ||
54dc6425 ILT |
2660 | // Return whether this is a section of the specified type. |
2661 | bool | |
75f65a3e | 2662 | do_is_section_type(elfcpp::Elf_Word type) const |
54dc6425 ILT |
2663 | { return this->type_ == type; } |
2664 | ||
2665 | // Return whether the specified section flag is set. | |
2666 | bool | |
75f65a3e | 2667 | do_is_section_flag_set(elfcpp::Elf_Xword flag) const |
54dc6425 ILT |
2668 | { return (this->flags_ & flag) != 0; } |
2669 | ||
7bf1f802 ILT |
2670 | // Set the TLS offset. Called only for SHT_TLS sections. |
2671 | void | |
2672 | do_set_tls_offset(uint64_t tls_base); | |
2673 | ||
2674 | // Return the TLS offset, relative to the base of the TLS segment. | |
2675 | // Valid only for SHT_TLS sections. | |
2676 | uint64_t | |
2677 | do_tls_offset() const | |
2678 | { return this->tls_offset_; } | |
2679 | ||
96803768 ILT |
2680 | // This may be implemented by a child class. |
2681 | virtual void | |
2682 | do_finalize_name(Layout*) | |
2683 | { } | |
2684 | ||
7d9e3d98 ILT |
2685 | // Print to the map file. |
2686 | virtual void | |
2687 | do_print_to_mapfile(Mapfile*) const; | |
2688 | ||
96803768 ILT |
2689 | // Record that this section requires postprocessing after all |
2690 | // relocations have been applied. This is called by a child class. | |
2691 | void | |
2692 | set_requires_postprocessing() | |
2693 | { | |
2694 | this->requires_postprocessing_ = true; | |
2695 | this->after_input_sections_ = true; | |
2696 | } | |
2697 | ||
2698 | // Write all the data of an Output_section into the postprocessing | |
2699 | // buffer. | |
2700 | void | |
2701 | write_to_postprocessing_buffer(); | |
2702 | ||
ead1e424 ILT |
2703 | // In some cases we need to keep a list of the input sections |
2704 | // associated with this output section. We only need the list if we | |
2705 | // might have to change the offsets of the input section within the | |
2706 | // output section after we add the input section. The ordinary | |
2707 | // input sections will be written out when we process the object | |
2708 | // file, and as such we don't need to track them here. We do need | |
2709 | // to track Output_section_data objects here. We store instances of | |
2710 | // this structure in a std::vector, so it must be a POD. There can | |
2711 | // be many instances of this structure, so we use a union to save | |
2712 | // some space. | |
2713 | class Input_section | |
2714 | { | |
2715 | public: | |
2716 | Input_section() | |
b8e6aad9 ILT |
2717 | : shndx_(0), p2align_(0) |
2718 | { | |
2719 | this->u1_.data_size = 0; | |
2720 | this->u2_.object = NULL; | |
2721 | } | |
ead1e424 | 2722 | |
b8e6aad9 | 2723 | // For an ordinary input section. |
f6ce93d6 | 2724 | Input_section(Relobj* object, unsigned int shndx, off_t data_size, |
ead1e424 ILT |
2725 | uint64_t addralign) |
2726 | : shndx_(shndx), | |
b8e6aad9 | 2727 | p2align_(ffsll(static_cast<long long>(addralign))) |
ead1e424 | 2728 | { |
b8e6aad9 ILT |
2729 | gold_assert(shndx != OUTPUT_SECTION_CODE |
2730 | && shndx != MERGE_DATA_SECTION_CODE | |
20e6d0d6 DK |
2731 | && shndx != MERGE_STRING_SECTION_CODE |
2732 | && shndx != RELAXED_INPUT_SECTION_CODE); | |
b8e6aad9 ILT |
2733 | this->u1_.data_size = data_size; |
2734 | this->u2_.object = object; | |
ead1e424 ILT |
2735 | } |
2736 | ||
b8e6aad9 | 2737 | // For a non-merge output section. |
ead1e424 | 2738 | Input_section(Output_section_data* posd) |
f34787f8 | 2739 | : shndx_(OUTPUT_SECTION_CODE), p2align_(0) |
b8e6aad9 ILT |
2740 | { |
2741 | this->u1_.data_size = 0; | |
2742 | this->u2_.posd = posd; | |
2743 | } | |
2744 | ||
2745 | // For a merge section. | |
2746 | Input_section(Output_section_data* posd, bool is_string, uint64_t entsize) | |
2747 | : shndx_(is_string | |
2748 | ? MERGE_STRING_SECTION_CODE | |
2749 | : MERGE_DATA_SECTION_CODE), | |
f34787f8 | 2750 | p2align_(0) |
b8e6aad9 ILT |
2751 | { |
2752 | this->u1_.entsize = entsize; | |
2753 | this->u2_.posd = posd; | |
2754 | } | |
ead1e424 | 2755 | |
20e6d0d6 DK |
2756 | // For a relaxed input section. |
2757 | Input_section(Output_relaxed_input_section *psection) | |
2758 | : shndx_(RELAXED_INPUT_SECTION_CODE), p2align_(0) | |
2759 | { | |
2760 | this->u1_.data_size = 0; | |
2761 | this->u2_.poris = psection; | |
2762 | } | |
2763 | ||
ead1e424 ILT |
2764 | // The required alignment. |
2765 | uint64_t | |
2766 | addralign() const | |
a3ad94ed | 2767 | { |
f34787f8 ILT |
2768 | if (!this->is_input_section()) |
2769 | return this->u2_.posd->addralign(); | |
a3ad94ed ILT |
2770 | return (this->p2align_ == 0 |
2771 | ? 0 | |
2772 | : static_cast<uint64_t>(1) << (this->p2align_ - 1)); | |
2773 | } | |
ead1e424 ILT |
2774 | |
2775 | // Return the required size. | |
2776 | off_t | |
2777 | data_size() const; | |
2778 | ||
a445fddf ILT |
2779 | // Whether this is an input section. |
2780 | bool | |
2781 | is_input_section() const | |
2782 | { | |
2783 | return (this->shndx_ != OUTPUT_SECTION_CODE | |
2784 | && this->shndx_ != MERGE_DATA_SECTION_CODE | |
20e6d0d6 DK |
2785 | && this->shndx_ != MERGE_STRING_SECTION_CODE |
2786 | && this->shndx_ != RELAXED_INPUT_SECTION_CODE); | |
a445fddf ILT |
2787 | } |
2788 | ||
b8e6aad9 ILT |
2789 | // Return whether this is a merge section which matches the |
2790 | // parameters. | |
2791 | bool | |
87f95776 ILT |
2792 | is_merge_section(bool is_string, uint64_t entsize, |
2793 | uint64_t addralign) const | |
b8e6aad9 ILT |
2794 | { |
2795 | return (this->shndx_ == (is_string | |
2796 | ? MERGE_STRING_SECTION_CODE | |
2797 | : MERGE_DATA_SECTION_CODE) | |
87f95776 ILT |
2798 | && this->u1_.entsize == entsize |
2799 | && this->addralign() == addralign); | |
b8e6aad9 ILT |
2800 | } |
2801 | ||
20e6d0d6 DK |
2802 | // Return whether this is a relaxed input section. |
2803 | bool | |
2804 | is_relaxed_input_section() const | |
2805 | { return this->shndx_ == RELAXED_INPUT_SECTION_CODE; } | |
2806 | ||
2807 | // Return whether this is a generic Output_section_data. | |
2808 | bool | |
2809 | is_output_section_data() const | |
2810 | { | |
2811 | return this->shndx_ == OUTPUT_SECTION_CODE; | |
2812 | } | |
2813 | ||
a445fddf ILT |
2814 | // Return the object for an input section. |
2815 | Relobj* | |
2816 | relobj() const | |
2817 | { | |
c0a62865 DK |
2818 | if (this->is_input_section()) |
2819 | return this->u2_.object; | |
2820 | else if (this->is_relaxed_input_section()) | |
2821 | return this->u2_.poris->relobj(); | |
2822 | else | |
2823 | gold_unreachable(); | |
a445fddf ILT |
2824 | } |
2825 | ||
2826 | // Return the input section index for an input section. | |
2827 | unsigned int | |
2828 | shndx() const | |
2829 | { | |
c0a62865 DK |
2830 | if (this->is_input_section()) |
2831 | return this->shndx_; | |
2832 | else if (this->is_relaxed_input_section()) | |
2833 | return this->u2_.poris->shndx(); | |
2834 | else | |
2835 | gold_unreachable(); | |
a445fddf ILT |
2836 | } |
2837 | ||
20e6d0d6 DK |
2838 | // For non-input-sections, return the associated Output_section_data |
2839 | // object. | |
2840 | Output_section_data* | |
2841 | output_section_data() const | |
2842 | { | |
2843 | gold_assert(!this->is_input_section()); | |
2844 | return this->u2_.posd; | |
2845 | } | |
2846 | ||
2847 | // Return the Output_relaxed_input_section object. | |
2848 | Output_relaxed_input_section* | |
2849 | relaxed_input_section() const | |
2850 | { | |
2851 | gold_assert(this->is_relaxed_input_section()); | |
2852 | return this->u2_.poris; | |
2853 | } | |
2854 | ||
b8e6aad9 ILT |
2855 | // Set the output section. |
2856 | void | |
2857 | set_output_section(Output_section* os) | |
2858 | { | |
2859 | gold_assert(!this->is_input_section()); | |
20e6d0d6 DK |
2860 | Output_section_data *posd = |
2861 | this->is_relaxed_input_section() ? this->u2_.poris : this->u2_.posd; | |
2862 | posd->set_output_section(os); | |
b8e6aad9 ILT |
2863 | } |
2864 | ||
ead1e424 | 2865 | // Set the address and file offset. This is called during |
96803768 ILT |
2866 | // Layout::finalize. SECTION_FILE_OFFSET is the file offset of |
2867 | // the enclosing section. | |
ead1e424 | 2868 | void |
96803768 ILT |
2869 | set_address_and_file_offset(uint64_t address, off_t file_offset, |
2870 | off_t section_file_offset); | |
ead1e424 | 2871 | |
a445fddf ILT |
2872 | // Reset the address and file offset. |
2873 | void | |
2874 | reset_address_and_file_offset(); | |
2875 | ||
96803768 ILT |
2876 | // Finalize the data size. |
2877 | void | |
2878 | finalize_data_size(); | |
9a0910c3 | 2879 | |
b8e6aad9 ILT |
2880 | // Add an input section, for SHF_MERGE sections. |
2881 | bool | |
2882 | add_input_section(Relobj* object, unsigned int shndx) | |
2883 | { | |
2884 | gold_assert(this->shndx_ == MERGE_DATA_SECTION_CODE | |
2885 | || this->shndx_ == MERGE_STRING_SECTION_CODE); | |
2886 | return this->u2_.posd->add_input_section(object, shndx); | |
2887 | } | |
2888 | ||
2889 | // Given an input OBJECT, an input section index SHNDX within that | |
2890 | // object, and an OFFSET relative to the start of that input | |
730cdc88 | 2891 | // section, return whether or not the output offset is known. If |
1e983657 ILT |
2892 | // this function returns true, it sets *POUTPUT to the offset in |
2893 | // the output section, relative to the start of the input section | |
2894 | // in the output section. *POUTPUT may be different from OFFSET | |
2895 | // for a merged section. | |
b8e6aad9 | 2896 | bool |
8383303e ILT |
2897 | output_offset(const Relobj* object, unsigned int shndx, |
2898 | section_offset_type offset, | |
2899 | section_offset_type *poutput) const; | |
b8e6aad9 | 2900 | |
a9a60db6 ILT |
2901 | // Return whether this is the merge section for the input section |
2902 | // SHNDX in OBJECT. | |
2903 | bool | |
2904 | is_merge_section_for(const Relobj* object, unsigned int shndx) const; | |
2905 | ||
ead1e424 ILT |
2906 | // Write out the data. This does nothing for an input section. |
2907 | void | |
2908 | write(Output_file*); | |
2909 | ||
96803768 ILT |
2910 | // Write the data to a buffer. This does nothing for an input |
2911 | // section. | |
2912 | void | |
2913 | write_to_buffer(unsigned char*); | |
2914 | ||
7d9e3d98 ILT |
2915 | // Print to a map file. |
2916 | void | |
2917 | print_to_mapfile(Mapfile*) const; | |
2918 | ||
38c5e8b4 ILT |
2919 | // Print statistics about merge sections to stderr. |
2920 | void | |
2921 | print_merge_stats(const char* section_name) | |
2922 | { | |
2923 | if (this->shndx_ == MERGE_DATA_SECTION_CODE | |
2924 | || this->shndx_ == MERGE_STRING_SECTION_CODE) | |
2925 | this->u2_.posd->print_merge_stats(section_name); | |
2926 | } | |
2927 | ||
ead1e424 | 2928 | private: |
b8e6aad9 ILT |
2929 | // Code values which appear in shndx_. If the value is not one of |
2930 | // these codes, it is the input section index in the object file. | |
2931 | enum | |
2932 | { | |
2933 | // An Output_section_data. | |
2934 | OUTPUT_SECTION_CODE = -1U, | |
2935 | // An Output_section_data for an SHF_MERGE section with | |
2936 | // SHF_STRINGS not set. | |
2937 | MERGE_DATA_SECTION_CODE = -2U, | |
2938 | // An Output_section_data for an SHF_MERGE section with | |
2939 | // SHF_STRINGS set. | |
20e6d0d6 DK |
2940 | MERGE_STRING_SECTION_CODE = -3U, |
2941 | // An Output_section_data for a relaxed input section. | |
2942 | RELAXED_INPUT_SECTION_CODE = -4U | |
b8e6aad9 ILT |
2943 | }; |
2944 | ||
b8e6aad9 ILT |
2945 | // For an ordinary input section, this is the section index in the |
2946 | // input file. For an Output_section_data, this is | |
2947 | // OUTPUT_SECTION_CODE or MERGE_DATA_SECTION_CODE or | |
2948 | // MERGE_STRING_SECTION_CODE. | |
ead1e424 ILT |
2949 | unsigned int shndx_; |
2950 | // The required alignment, stored as a power of 2. | |
2951 | unsigned int p2align_; | |
ead1e424 ILT |
2952 | union |
2953 | { | |
b8e6aad9 ILT |
2954 | // For an ordinary input section, the section size. |
2955 | off_t data_size; | |
20e6d0d6 DK |
2956 | // For OUTPUT_SECTION_CODE or RELAXED_INPUT_SECTION_CODE, this is not |
2957 | // used. For MERGE_DATA_SECTION_CODE or MERGE_STRING_SECTION_CODE, the | |
b8e6aad9 ILT |
2958 | // entity size. |
2959 | uint64_t entsize; | |
2960 | } u1_; | |
2961 | union | |
2962 | { | |
2963 | // For an ordinary input section, the object which holds the | |
ead1e424 | 2964 | // input section. |
f6ce93d6 | 2965 | Relobj* object; |
b8e6aad9 ILT |
2966 | // For OUTPUT_SECTION_CODE or MERGE_DATA_SECTION_CODE or |
2967 | // MERGE_STRING_SECTION_CODE, the data. | |
ead1e424 | 2968 | Output_section_data* posd; |
20e6d0d6 DK |
2969 | // For RELAXED_INPUT_SECTION_CODE, the data. |
2970 | Output_relaxed_input_section* poris; | |
b8e6aad9 | 2971 | } u2_; |
ead1e424 ILT |
2972 | }; |
2973 | ||
2974 | typedef std::vector<Input_section> Input_section_list; | |
2975 | ||
c0a62865 DK |
2976 | // Allow a child class to access the input sections. |
2977 | const Input_section_list& | |
2978 | input_sections() const | |
2979 | { return this->input_sections_; } | |
2980 | ||
2981 | private: | |
20e6d0d6 DK |
2982 | // We only save enough information to undo the effects of section layout. |
2983 | class Checkpoint_output_section | |
2984 | { | |
2985 | public: | |
2986 | Checkpoint_output_section(uint64_t addralign, elfcpp::Elf_Xword flags, | |
2987 | const Input_section_list& input_sections, | |
2988 | off_t first_input_offset, | |
2989 | bool attached_input_sections_are_sorted) | |
2990 | : addralign_(addralign), flags_(flags), | |
2991 | input_sections_(input_sections), | |
2992 | input_sections_size_(input_sections_.size()), | |
2993 | input_sections_copy_(), first_input_offset_(first_input_offset), | |
2994 | attached_input_sections_are_sorted_(attached_input_sections_are_sorted) | |
2995 | { } | |
2996 | ||
2997 | virtual | |
2998 | ~Checkpoint_output_section() | |
2999 | { } | |
3000 | ||
3001 | // Return the address alignment. | |
3002 | uint64_t | |
3003 | addralign() const | |
3004 | { return this->addralign_; } | |
3005 | ||
3006 | // Return the section flags. | |
3007 | elfcpp::Elf_Xword | |
3008 | flags() const | |
3009 | { return this->flags_; } | |
3010 | ||
3011 | // Return a reference to the input section list copy. | |
c0a62865 DK |
3012 | Input_section_list* |
3013 | input_sections() | |
3014 | { return &this->input_sections_copy_; } | |
20e6d0d6 DK |
3015 | |
3016 | // Return the size of input_sections at the time when checkpoint is | |
3017 | // taken. | |
3018 | size_t | |
3019 | input_sections_size() const | |
3020 | { return this->input_sections_size_; } | |
3021 | ||
3022 | // Whether input sections are copied. | |
3023 | bool | |
3024 | input_sections_saved() const | |
3025 | { return this->input_sections_copy_.size() == this->input_sections_size_; } | |
3026 | ||
3027 | off_t | |
3028 | first_input_offset() const | |
3029 | { return this->first_input_offset_; } | |
3030 | ||
3031 | bool | |
3032 | attached_input_sections_are_sorted() const | |
3033 | { return this->attached_input_sections_are_sorted_; } | |
3034 | ||
3035 | // Save input sections. | |
3036 | void | |
3037 | save_input_sections() | |
3038 | { | |
3039 | this->input_sections_copy_.reserve(this->input_sections_size_); | |
3040 | this->input_sections_copy_.clear(); | |
3041 | Input_section_list::const_iterator p = this->input_sections_.begin(); | |
3042 | gold_assert(this->input_sections_size_ >= this->input_sections_.size()); | |
3043 | for(size_t i = 0; i < this->input_sections_size_ ; i++, ++p) | |
3044 | this->input_sections_copy_.push_back(*p); | |
3045 | } | |
3046 | ||
3047 | private: | |
3048 | // The section alignment. | |
3049 | uint64_t addralign_; | |
3050 | // The section flags. | |
3051 | elfcpp::Elf_Xword flags_; | |
3052 | // Reference to the input sections to be checkpointed. | |
3053 | const Input_section_list& input_sections_; | |
3054 | // Size of the checkpointed portion of input_sections_; | |
3055 | size_t input_sections_size_; | |
3056 | // Copy of input sections. | |
3057 | Input_section_list input_sections_copy_; | |
3058 | // The offset of the first entry in input_sections_. | |
3059 | off_t first_input_offset_; | |
3060 | // True if the input sections attached to this output section have | |
3061 | // already been sorted. | |
3062 | bool attached_input_sections_are_sorted_; | |
3063 | }; | |
3064 | ||
2fd32231 ILT |
3065 | // This class is used to sort the input sections. |
3066 | class Input_section_sort_entry; | |
3067 | ||
3068 | // This is the sort comparison function. | |
3069 | struct Input_section_sort_compare | |
3070 | { | |
3071 | bool | |
3072 | operator()(const Input_section_sort_entry&, | |
3073 | const Input_section_sort_entry&) const; | |
3074 | }; | |
3075 | ||
c51e6221 | 3076 | // Fill data. This is used to fill in data between input sections. |
a445fddf ILT |
3077 | // It is also used for data statements (BYTE, WORD, etc.) in linker |
3078 | // scripts. When we have to keep track of the input sections, we | |
3079 | // can use an Output_data_const, but we don't want to have to keep | |
3080 | // track of input sections just to implement fills. | |
c51e6221 ILT |
3081 | class Fill |
3082 | { | |
3083 | public: | |
3084 | Fill(off_t section_offset, off_t length) | |
a445fddf ILT |
3085 | : section_offset_(section_offset), |
3086 | length_(convert_to_section_size_type(length)) | |
c51e6221 ILT |
3087 | { } |
3088 | ||
3089 | // Return section offset. | |
3090 | off_t | |
3091 | section_offset() const | |
3092 | { return this->section_offset_; } | |
3093 | ||
3094 | // Return fill length. | |
a445fddf | 3095 | section_size_type |
c51e6221 ILT |
3096 | length() const |
3097 | { return this->length_; } | |
3098 | ||
3099 | private: | |
3100 | // The offset within the output section. | |
3101 | off_t section_offset_; | |
3102 | // The length of the space to fill. | |
a445fddf | 3103 | section_size_type length_; |
c51e6221 ILT |
3104 | }; |
3105 | ||
3106 | typedef std::vector<Fill> Fill_list; | |
3107 | ||
c0a62865 DK |
3108 | // This class describes properties of merge data sections. It is used |
3109 | // as a key type for maps. | |
3110 | class Merge_section_properties | |
3111 | { | |
3112 | public: | |
3113 | Merge_section_properties(bool is_string, uint64_t entsize, | |
3114 | uint64_t addralign) | |
3115 | : is_string_(is_string), entsize_(entsize), addralign_(addralign) | |
3116 | { } | |
3117 | ||
3118 | // Whether this equals to another Merge_section_properties MSP. | |
3119 | bool | |
3120 | eq(const Merge_section_properties& msp) const | |
3121 | { | |
3122 | return ((this->is_string_ == msp.is_string_) | |
3123 | && (this->entsize_ == msp.entsize_) | |
3124 | && (this->addralign_ == msp.addralign_)); | |
3125 | } | |
3126 | ||
3127 | // Compute a hash value for this using 64-bit FNV-1a hash. | |
3128 | size_t | |
3129 | hash_value() const | |
3130 | { | |
3131 | uint64_t h = 14695981039346656037ULL; // FNV offset basis. | |
3132 | uint64_t prime = 1099511628211ULL; | |
3133 | h = (h ^ static_cast<uint64_t>(this->is_string_)) * prime; | |
3134 | h = (h ^ static_cast<uint64_t>(this->entsize_)) * prime; | |
3135 | h = (h ^ static_cast<uint64_t>(this->addralign_)) * prime; | |
3136 | return h; | |
3137 | } | |
3138 | ||
3139 | // Functors for associative containers. | |
3140 | struct equal_to | |
3141 | { | |
3142 | bool | |
3143 | operator()(const Merge_section_properties& msp1, | |
3144 | const Merge_section_properties& msp2) const | |
3145 | { return msp1.eq(msp2); } | |
3146 | }; | |
3147 | ||
3148 | struct hash | |
3149 | { | |
3150 | size_t | |
3151 | operator()(const Merge_section_properties& msp) const | |
3152 | { return msp.hash_value(); } | |
3153 | }; | |
3154 | ||
3155 | private: | |
3156 | // Whether this merge data section is for strings. | |
3157 | bool is_string_; | |
3158 | // Entsize of this merge data section. | |
3159 | uint64_t entsize_; | |
3160 | // Address alignment. | |
3161 | uint64_t addralign_; | |
3162 | }; | |
3163 | ||
3164 | // Map that link Merge_section_properties to Output_merge_base. | |
3165 | typedef Unordered_map<Merge_section_properties, Output_merge_base*, | |
3166 | Merge_section_properties::hash, | |
3167 | Merge_section_properties::equal_to> | |
3168 | Merge_section_by_properties_map; | |
3169 | ||
3170 | // Map that link Input_section_specifier to Output_section_data. | |
3171 | typedef Unordered_map<Input_section_specifier, Output_section_data*, | |
3172 | Input_section_specifier::hash, | |
3173 | Input_section_specifier::equal_to> | |
3174 | Output_section_data_by_input_section_map; | |
3175 | ||
3176 | // Map used during relaxation of existing sections. This map | |
3177 | // an input section specifier to an input section list index. | |
3178 | // We assume that Input_section_list is a vector. | |
3179 | typedef Unordered_map<Input_section_specifier, size_t, | |
3180 | Input_section_specifier::hash, | |
3181 | Input_section_specifier::equal_to> | |
3182 | Relaxation_map; | |
3183 | ||
b8e6aad9 ILT |
3184 | // Add a new output section by Input_section. |
3185 | void | |
3186 | add_output_section_data(Input_section*); | |
3187 | ||
3188 | // Add an SHF_MERGE input section. Returns true if the section was | |
3189 | // handled. | |
3190 | bool | |
3191 | add_merge_input_section(Relobj* object, unsigned int shndx, uint64_t flags, | |
96803768 | 3192 | uint64_t entsize, uint64_t addralign); |
b8e6aad9 ILT |
3193 | |
3194 | // Add an output SHF_MERGE section POSD to this output section. | |
3195 | // IS_STRING indicates whether it is a SHF_STRINGS section, and | |
3196 | // ENTSIZE is the entity size. This returns the entry added to | |
3197 | // input_sections_. | |
3198 | void | |
3199 | add_output_merge_section(Output_section_data* posd, bool is_string, | |
3200 | uint64_t entsize); | |
3201 | ||
2fd32231 ILT |
3202 | // Sort the attached input sections. |
3203 | void | |
3204 | sort_attached_input_sections(); | |
3205 | ||
c0a62865 DK |
3206 | // Find the merge section into which an input section with index SHNDX in |
3207 | // OBJECT has been added. Return NULL if none found. | |
3208 | Output_section_data* | |
3209 | find_merge_section(const Relobj* object, unsigned int shndx) const; | |
3210 | ||
3211 | // Find a relaxed input section to an input section in OBJECT | |
3212 | // with index SHNDX. Return NULL if none is found. | |
3213 | const Output_section_data* | |
3214 | find_relaxed_input_section(const Relobj* object, unsigned int shndx) const; | |
3215 | ||
3216 | // Build a relaxation map. | |
3217 | void | |
3218 | build_relaxation_map( | |
3219 | const Input_section_list& input_sections, | |
3220 | size_t limit, | |
3221 | Relaxation_map* map) const; | |
3222 | ||
3223 | // Convert input sections in an input section list into relaxed sections. | |
3224 | void | |
3225 | convert_input_sections_in_list_to_relaxed_sections( | |
3226 | const std::vector<Output_relaxed_input_section*>& relaxed_sections, | |
3227 | const Relaxation_map& map, | |
3228 | Input_section_list* input_sections); | |
3229 | ||
a2fb1b05 ILT |
3230 | // Most of these fields are only valid after layout. |
3231 | ||
3232 | // The name of the section. This will point into a Stringpool. | |
9a0910c3 | 3233 | const char* name_; |
75f65a3e | 3234 | // The section address is in the parent class. |
a2fb1b05 ILT |
3235 | // The section alignment. |
3236 | uint64_t addralign_; | |
3237 | // The section entry size. | |
3238 | uint64_t entsize_; | |
a445fddf ILT |
3239 | // The load address. This is only used when using a linker script |
3240 | // with a SECTIONS clause. The has_load_address_ field indicates | |
3241 | // whether this field is valid. | |
3242 | uint64_t load_address_; | |
75f65a3e | 3243 | // The file offset is in the parent class. |
16649710 | 3244 | // Set the section link field to the index of this section. |
14b31740 | 3245 | const Output_data* link_section_; |
16649710 | 3246 | // If link_section_ is NULL, this is the link field. |
a2fb1b05 | 3247 | unsigned int link_; |
16649710 | 3248 | // Set the section info field to the index of this section. |
755ab8af | 3249 | const Output_section* info_section_; |
6a74a719 ILT |
3250 | // If info_section_ is NULL, set the info field to the symbol table |
3251 | // index of this symbol. | |
3252 | const Symbol* info_symndx_; | |
3253 | // If info_section_ and info_symndx_ are NULL, this is the section | |
3254 | // info field. | |
a2fb1b05 ILT |
3255 | unsigned int info_; |
3256 | // The section type. | |
27bc2bce | 3257 | const elfcpp::Elf_Word type_; |
a2fb1b05 | 3258 | // The section flags. |
a445fddf | 3259 | elfcpp::Elf_Xword flags_; |
61ba1cf9 | 3260 | // The section index. |
ead1e424 | 3261 | unsigned int out_shndx_; |
c06b7b0b ILT |
3262 | // If there is a STT_SECTION for this output section in the normal |
3263 | // symbol table, this is the symbol index. This starts out as zero. | |
3264 | // It is initialized in Layout::finalize() to be the index, or -1U | |
3265 | // if there isn't one. | |
3266 | unsigned int symtab_index_; | |
3267 | // If there is a STT_SECTION for this output section in the dynamic | |
3268 | // symbol table, this is the symbol index. This starts out as zero. | |
3269 | // It is initialized in Layout::finalize() to be the index, or -1U | |
3270 | // if there isn't one. | |
3271 | unsigned int dynsym_index_; | |
ead1e424 ILT |
3272 | // The input sections. This will be empty in cases where we don't |
3273 | // need to keep track of them. | |
3274 | Input_section_list input_sections_; | |
3275 | // The offset of the first entry in input_sections_. | |
3276 | off_t first_input_offset_; | |
c51e6221 ILT |
3277 | // The fill data. This is separate from input_sections_ because we |
3278 | // often will need fill sections without needing to keep track of | |
3279 | // input sections. | |
3280 | Fill_list fills_; | |
96803768 ILT |
3281 | // If the section requires postprocessing, this buffer holds the |
3282 | // section contents during relocation. | |
3283 | unsigned char* postprocessing_buffer_; | |
c06b7b0b ILT |
3284 | // Whether this output section needs a STT_SECTION symbol in the |
3285 | // normal symbol table. This will be true if there is a relocation | |
3286 | // which needs it. | |
3287 | bool needs_symtab_index_ : 1; | |
3288 | // Whether this output section needs a STT_SECTION symbol in the | |
3289 | // dynamic symbol table. This will be true if there is a dynamic | |
3290 | // relocation which needs it. | |
3291 | bool needs_dynsym_index_ : 1; | |
16649710 ILT |
3292 | // Whether the link field of this output section should point to the |
3293 | // normal symbol table. | |
3294 | bool should_link_to_symtab_ : 1; | |
3295 | // Whether the link field of this output section should point to the | |
3296 | // dynamic symbol table. | |
3297 | bool should_link_to_dynsym_ : 1; | |
730cdc88 ILT |
3298 | // Whether this section should be written after all the input |
3299 | // sections are complete. | |
3300 | bool after_input_sections_ : 1; | |
27bc2bce ILT |
3301 | // Whether this section requires post processing after all |
3302 | // relocations have been applied. | |
3303 | bool requires_postprocessing_ : 1; | |
a445fddf ILT |
3304 | // Whether an input section was mapped to this output section |
3305 | // because of a SECTIONS clause in a linker script. | |
3306 | bool found_in_sections_clause_ : 1; | |
3307 | // Whether this section has an explicitly specified load address. | |
3308 | bool has_load_address_ : 1; | |
755ab8af ILT |
3309 | // True if the info_section_ field means the section index of the |
3310 | // section, false if it means the symbol index of the corresponding | |
3311 | // section symbol. | |
3312 | bool info_uses_section_index_ : 1; | |
2fd32231 ILT |
3313 | // True if the input sections attached to this output section may |
3314 | // need sorting. | |
3315 | bool may_sort_attached_input_sections_ : 1; | |
3316 | // True if the input sections attached to this output section must | |
3317 | // be sorted. | |
3318 | bool must_sort_attached_input_sections_ : 1; | |
3319 | // True if the input sections attached to this output section have | |
3320 | // already been sorted. | |
3321 | bool attached_input_sections_are_sorted_ : 1; | |
9f1d377b ILT |
3322 | // True if this section holds relro data. |
3323 | bool is_relro_ : 1; | |
3324 | // True if this section holds relro local data. | |
3325 | bool is_relro_local_ : 1; | |
8a5e3e08 ILT |
3326 | // True if this is a small section. |
3327 | bool is_small_section_ : 1; | |
3328 | // True if this is a large section. | |
3329 | bool is_large_section_ : 1; | |
7bf1f802 ILT |
3330 | // For SHT_TLS sections, the offset of this section relative to the base |
3331 | // of the TLS segment. | |
3332 | uint64_t tls_offset_; | |
20e6d0d6 DK |
3333 | // Saved checkpoint. |
3334 | Checkpoint_output_section* checkpoint_; | |
c0a62865 DK |
3335 | // Map from input sections to merge sections. |
3336 | Output_section_data_by_input_section_map merge_section_map_; | |
3337 | // Map from merge section properties to merge_sections; | |
3338 | Merge_section_by_properties_map merge_section_by_properties_map_; | |
3339 | // Map from input sections to relaxed input sections. This is mutable | |
3340 | // beacause it is udpated lazily. We may need to update it in a | |
3341 | // const qualified method. | |
3342 | mutable Output_section_data_by_input_section_map relaxed_input_section_map_; | |
3343 | // Whether relaxed_input_section_map_ is valid. | |
3344 | mutable bool is_relaxed_input_section_map_valid_; | |
3345 | // Whether code-fills are generated at write. | |
3346 | bool generate_code_fills_at_write_; | |
a2fb1b05 ILT |
3347 | }; |
3348 | ||
3349 | // An output segment. PT_LOAD segments are built from collections of | |
3350 | // output sections. Other segments typically point within PT_LOAD | |
3351 | // segments, and are built directly as needed. | |
20e6d0d6 DK |
3352 | // |
3353 | // NOTE: We want to use the copy constructor for this class. During | |
3354 | // relaxation, we may try built the segments multiple times. We do | |
3355 | // that by copying the original segment list before lay-out, doing | |
3356 | // a trial lay-out and roll-back to the saved copied if we need to | |
3357 | // to the lay-out again. | |
a2fb1b05 ILT |
3358 | |
3359 | class Output_segment | |
3360 | { | |
3361 | public: | |
3362 | // Create an output segment, specifying the type and flags. | |
3363 | Output_segment(elfcpp::Elf_Word, elfcpp::Elf_Word); | |
3364 | ||
3365 | // Return the virtual address. | |
3366 | uint64_t | |
3367 | vaddr() const | |
3368 | { return this->vaddr_; } | |
3369 | ||
3370 | // Return the physical address. | |
3371 | uint64_t | |
3372 | paddr() const | |
3373 | { return this->paddr_; } | |
3374 | ||
3375 | // Return the segment type. | |
3376 | elfcpp::Elf_Word | |
3377 | type() const | |
3378 | { return this->type_; } | |
3379 | ||
3380 | // Return the segment flags. | |
3381 | elfcpp::Elf_Word | |
3382 | flags() const | |
3383 | { return this->flags_; } | |
3384 | ||
92e059d8 ILT |
3385 | // Return the memory size. |
3386 | uint64_t | |
3387 | memsz() const | |
3388 | { return this->memsz_; } | |
3389 | ||
ead1e424 ILT |
3390 | // Return the file size. |
3391 | off_t | |
3392 | filesz() const | |
3393 | { return this->filesz_; } | |
3394 | ||
516cb3d0 ILT |
3395 | // Return the file offset. |
3396 | off_t | |
3397 | offset() const | |
3398 | { return this->offset_; } | |
3399 | ||
8a5e3e08 ILT |
3400 | // Whether this is a segment created to hold large data sections. |
3401 | bool | |
3402 | is_large_data_segment() const | |
3403 | { return this->is_large_data_segment_; } | |
3404 | ||
3405 | // Record that this is a segment created to hold large data | |
3406 | // sections. | |
3407 | void | |
3408 | set_is_large_data_segment() | |
3409 | { this->is_large_data_segment_ = true; } | |
3410 | ||
75f65a3e ILT |
3411 | // Return the maximum alignment of the Output_data. |
3412 | uint64_t | |
a445fddf | 3413 | maximum_alignment(); |
75f65a3e | 3414 | |
a2fb1b05 ILT |
3415 | // Add an Output_section to this segment. |
3416 | void | |
01676dcd | 3417 | add_output_section(Output_section* os, elfcpp::Elf_Word seg_flags); |
75f65a3e | 3418 | |
1650c4ff ILT |
3419 | // Remove an Output_section from this segment. It is an error if it |
3420 | // is not present. | |
3421 | void | |
3422 | remove_output_section(Output_section* os); | |
3423 | ||
75f65a3e ILT |
3424 | // Add an Output_data (which is not an Output_section) to the start |
3425 | // of this segment. | |
3426 | void | |
3427 | add_initial_output_data(Output_data*); | |
3428 | ||
756ac4a8 ILT |
3429 | // Return true if this segment has any sections which hold actual |
3430 | // data, rather than being a BSS section. | |
3431 | bool | |
3432 | has_any_data_sections() const | |
3433 | { return !this->output_data_.empty(); } | |
3434 | ||
4f4c5f80 ILT |
3435 | // Return the number of dynamic relocations applied to this segment. |
3436 | unsigned int | |
3437 | dynamic_reloc_count() const; | |
3438 | ||
a445fddf ILT |
3439 | // Return the address of the first section. |
3440 | uint64_t | |
3441 | first_section_load_address() const; | |
3442 | ||
3443 | // Return whether the addresses have been set already. | |
3444 | bool | |
3445 | are_addresses_set() const | |
3446 | { return this->are_addresses_set_; } | |
3447 | ||
3448 | // Set the addresses. | |
3449 | void | |
3450 | set_addresses(uint64_t vaddr, uint64_t paddr) | |
3451 | { | |
3452 | this->vaddr_ = vaddr; | |
3453 | this->paddr_ = paddr; | |
3454 | this->are_addresses_set_ = true; | |
3455 | } | |
3456 | ||
1c4f3631 ILT |
3457 | // Set the segment flags. This is only used if we have a PHDRS |
3458 | // clause which explicitly specifies the flags. | |
3459 | void | |
3460 | set_flags(elfcpp::Elf_Word flags) | |
3461 | { this->flags_ = flags; } | |
3462 | ||
75f65a3e | 3463 | // Set the address of the segment to ADDR and the offset to *POFF |
a445fddf ILT |
3464 | // and set the addresses and offsets of all contained output |
3465 | // sections accordingly. Set the section indexes of all contained | |
3466 | // output sections starting with *PSHNDX. If RESET is true, first | |
3467 | // reset the addresses of the contained sections. Return the | |
3468 | // address of the immediately following segment. Update *POFF and | |
3469 | // *PSHNDX. This should only be called for a PT_LOAD segment. | |
75f65a3e | 3470 | uint64_t |
96a2b4e4 | 3471 | set_section_addresses(const Layout*, bool reset, uint64_t addr, off_t* poff, |
a445fddf | 3472 | unsigned int* pshndx); |
75f65a3e | 3473 | |
0496d5e5 ILT |
3474 | // Set the minimum alignment of this segment. This may be adjusted |
3475 | // upward based on the section alignments. | |
3476 | void | |
a445fddf ILT |
3477 | set_minimum_p_align(uint64_t align) |
3478 | { this->min_p_align_ = align; } | |
0496d5e5 | 3479 | |
75f65a3e ILT |
3480 | // Set the offset of this segment based on the section. This should |
3481 | // only be called for a non-PT_LOAD segment. | |
3482 | void | |
3483 | set_offset(); | |
3484 | ||
7bf1f802 ILT |
3485 | // Set the TLS offsets of the sections contained in the PT_TLS segment. |
3486 | void | |
3487 | set_tls_offsets(); | |
3488 | ||
75f65a3e ILT |
3489 | // Return the number of output sections. |
3490 | unsigned int | |
3491 | output_section_count() const; | |
a2fb1b05 | 3492 | |
1c4f3631 ILT |
3493 | // Return the section attached to the list segment with the lowest |
3494 | // load address. This is used when handling a PHDRS clause in a | |
3495 | // linker script. | |
3496 | Output_section* | |
3497 | section_with_lowest_load_address() const; | |
3498 | ||
61ba1cf9 ILT |
3499 | // Write the segment header into *OPHDR. |
3500 | template<int size, bool big_endian> | |
3501 | void | |
ead1e424 | 3502 | write_header(elfcpp::Phdr_write<size, big_endian>*); |
61ba1cf9 ILT |
3503 | |
3504 | // Write the section headers of associated sections into V. | |
3505 | template<int size, bool big_endian> | |
3506 | unsigned char* | |
16649710 | 3507 | write_section_headers(const Layout*, const Stringpool*, unsigned char* v, |
7d1a9ebb | 3508 | unsigned int* pshndx) const; |
61ba1cf9 | 3509 | |
7d9e3d98 ILT |
3510 | // Print the output sections in the map file. |
3511 | void | |
3512 | print_sections_to_mapfile(Mapfile*) const; | |
3513 | ||
a2fb1b05 | 3514 | private: |
54dc6425 | 3515 | typedef std::list<Output_data*> Output_data_list; |
a2fb1b05 | 3516 | |
ead1e424 ILT |
3517 | // Find the maximum alignment in an Output_data_list. |
3518 | static uint64_t | |
a445fddf | 3519 | maximum_alignment_list(const Output_data_list*); |
ead1e424 | 3520 | |
9f1d377b ILT |
3521 | // Return whether the first data section is a relro section. |
3522 | bool | |
3523 | is_first_section_relro() const; | |
3524 | ||
75f65a3e ILT |
3525 | // Set the section addresses in an Output_data_list. |
3526 | uint64_t | |
96a2b4e4 ILT |
3527 | set_section_list_addresses(const Layout*, bool reset, Output_data_list*, |
3528 | uint64_t addr, off_t* poff, unsigned int* pshndx, | |
9f1d377b | 3529 | bool* in_tls, bool* in_relro); |
75f65a3e ILT |
3530 | |
3531 | // Return the number of Output_sections in an Output_data_list. | |
3532 | unsigned int | |
3533 | output_section_count_list(const Output_data_list*) const; | |
3534 | ||
4f4c5f80 ILT |
3535 | // Return the number of dynamic relocs in an Output_data_list. |
3536 | unsigned int | |
3537 | dynamic_reloc_count_list(const Output_data_list*) const; | |
3538 | ||
1c4f3631 ILT |
3539 | // Find the section with the lowest load address in an |
3540 | // Output_data_list. | |
3541 | void | |
3542 | lowest_load_address_in_list(const Output_data_list* pdl, | |
3543 | Output_section** found, | |
3544 | uint64_t* found_lma) const; | |
3545 | ||
61ba1cf9 ILT |
3546 | // Write the section headers in the list into V. |
3547 | template<int size, bool big_endian> | |
3548 | unsigned char* | |
16649710 ILT |
3549 | write_section_headers_list(const Layout*, const Stringpool*, |
3550 | const Output_data_list*, unsigned char* v, | |
7d1a9ebb | 3551 | unsigned int* pshdx) const; |
61ba1cf9 | 3552 | |
7d9e3d98 ILT |
3553 | // Print a section list to the mapfile. |
3554 | void | |
3555 | print_section_list_to_mapfile(Mapfile*, const Output_data_list*) const; | |
3556 | ||
20e6d0d6 DK |
3557 | // NOTE: We want to use the copy constructor. Currently, shallow copy |
3558 | // works for us so we do not need to write our own copy constructor. | |
3559 | ||
75f65a3e | 3560 | // The list of output data with contents attached to this segment. |
54dc6425 | 3561 | Output_data_list output_data_; |
75f65a3e ILT |
3562 | // The list of output data without contents attached to this segment. |
3563 | Output_data_list output_bss_; | |
a2fb1b05 ILT |
3564 | // The segment virtual address. |
3565 | uint64_t vaddr_; | |
3566 | // The segment physical address. | |
3567 | uint64_t paddr_; | |
3568 | // The size of the segment in memory. | |
3569 | uint64_t memsz_; | |
a445fddf ILT |
3570 | // The maximum section alignment. The is_max_align_known_ field |
3571 | // indicates whether this has been finalized. | |
3572 | uint64_t max_align_; | |
3573 | // The required minimum value for the p_align field. This is used | |
3574 | // for PT_LOAD segments. Note that this does not mean that | |
3575 | // addresses should be aligned to this value; it means the p_paddr | |
3576 | // and p_vaddr fields must be congruent modulo this value. For | |
3577 | // non-PT_LOAD segments, the dynamic linker works more efficiently | |
3578 | // if the p_align field has the more conventional value, although it | |
3579 | // can align as needed. | |
3580 | uint64_t min_p_align_; | |
a2fb1b05 ILT |
3581 | // The offset of the segment data within the file. |
3582 | off_t offset_; | |
3583 | // The size of the segment data in the file. | |
3584 | off_t filesz_; | |
3585 | // The segment type; | |
3586 | elfcpp::Elf_Word type_; | |
3587 | // The segment flags. | |
3588 | elfcpp::Elf_Word flags_; | |
a445fddf ILT |
3589 | // Whether we have finalized max_align_. |
3590 | bool is_max_align_known_ : 1; | |
3591 | // Whether vaddr and paddr were set by a linker script. | |
3592 | bool are_addresses_set_ : 1; | |
8a5e3e08 ILT |
3593 | // Whether this segment holds large data sections. |
3594 | bool is_large_data_segment_ : 1; | |
a2fb1b05 ILT |
3595 | }; |
3596 | ||
61ba1cf9 | 3597 | // This class represents the output file. |
a2fb1b05 ILT |
3598 | |
3599 | class Output_file | |
3600 | { | |
3601 | public: | |
14144f39 | 3602 | Output_file(const char* name); |
61ba1cf9 | 3603 | |
516cb3d0 ILT |
3604 | // Indicate that this is a temporary file which should not be |
3605 | // output. | |
3606 | void | |
3607 | set_is_temporary() | |
3608 | { this->is_temporary_ = true; } | |
3609 | ||
404c2abb ILT |
3610 | // Try to open an existing file. Returns false if the file doesn't |
3611 | // exist, has a size of 0 or can't be mmaped. This method is | |
3612 | // thread-unsafe. | |
3613 | bool | |
3614 | open_for_modification(); | |
3615 | ||
61ba1cf9 | 3616 | // Open the output file. FILE_SIZE is the final size of the file. |
404c2abb ILT |
3617 | // If the file already exists, it is deleted/truncated. This method |
3618 | // is thread-unsafe. | |
61ba1cf9 ILT |
3619 | void |
3620 | open(off_t file_size); | |
3621 | ||
404c2abb | 3622 | // Resize the output file. This method is thread-unsafe. |
27bc2bce ILT |
3623 | void |
3624 | resize(off_t file_size); | |
3625 | ||
c420411f | 3626 | // Close the output file (flushing all buffered data) and make sure |
404c2abb | 3627 | // there are no errors. This method is thread-unsafe. |
61ba1cf9 ILT |
3628 | void |
3629 | close(); | |
3630 | ||
c549a694 ILT |
3631 | // Return the size of this file. |
3632 | off_t | |
3633 | filesize() | |
3634 | { return this->file_size_; } | |
3635 | ||
61ba1cf9 ILT |
3636 | // We currently always use mmap which makes the view handling quite |
3637 | // simple. In the future we may support other approaches. | |
a2fb1b05 ILT |
3638 | |
3639 | // Write data to the output file. | |
3640 | void | |
fe8718a4 | 3641 | write(off_t offset, const void* data, size_t len) |
61ba1cf9 ILT |
3642 | { memcpy(this->base_ + offset, data, len); } |
3643 | ||
3644 | // Get a buffer to use to write to the file, given the offset into | |
3645 | // the file and the size. | |
3646 | unsigned char* | |
fe8718a4 | 3647 | get_output_view(off_t start, size_t size) |
61ba1cf9 | 3648 | { |
8d32f935 ILT |
3649 | gold_assert(start >= 0 |
3650 | && start + static_cast<off_t>(size) <= this->file_size_); | |
61ba1cf9 ILT |
3651 | return this->base_ + start; |
3652 | } | |
3653 | ||
3654 | // VIEW must have been returned by get_output_view. Write the | |
3655 | // buffer to the file, passing in the offset and the size. | |
3656 | void | |
fe8718a4 | 3657 | write_output_view(off_t, size_t, unsigned char*) |
61ba1cf9 ILT |
3658 | { } |
3659 | ||
730cdc88 ILT |
3660 | // Get a read/write buffer. This is used when we want to write part |
3661 | // of the file, read it in, and write it again. | |
3662 | unsigned char* | |
fe8718a4 | 3663 | get_input_output_view(off_t start, size_t size) |
730cdc88 ILT |
3664 | { return this->get_output_view(start, size); } |
3665 | ||
3666 | // Write a read/write buffer back to the file. | |
3667 | void | |
fe8718a4 | 3668 | write_input_output_view(off_t, size_t, unsigned char*) |
730cdc88 ILT |
3669 | { } |
3670 | ||
3671 | // Get a read buffer. This is used when we just want to read part | |
3672 | // of the file back it in. | |
3673 | const unsigned char* | |
fe8718a4 | 3674 | get_input_view(off_t start, size_t size) |
730cdc88 ILT |
3675 | { return this->get_output_view(start, size); } |
3676 | ||
3677 | // Release a read bfufer. | |
3678 | void | |
fe8718a4 | 3679 | free_input_view(off_t, size_t, const unsigned char*) |
730cdc88 ILT |
3680 | { } |
3681 | ||
61ba1cf9 | 3682 | private: |
404c2abb ILT |
3683 | // Map the file into memory or, if that fails, allocate anonymous |
3684 | // memory. | |
27bc2bce ILT |
3685 | void |
3686 | map(); | |
3687 | ||
26736d8e | 3688 | // Allocate anonymous memory for the file. |
404c2abb | 3689 | bool |
26736d8e ILT |
3690 | map_anonymous(); |
3691 | ||
404c2abb ILT |
3692 | // Map the file into memory. |
3693 | bool | |
3694 | map_no_anonymous(); | |
3695 | ||
c420411f ILT |
3696 | // Unmap the file from memory (and flush to disk buffers). |
3697 | void | |
3698 | unmap(); | |
3699 | ||
61ba1cf9 ILT |
3700 | // File name. |
3701 | const char* name_; | |
3702 | // File descriptor. | |
3703 | int o_; | |
3704 | // File size. | |
3705 | off_t file_size_; | |
3706 | // Base of file mapped into memory. | |
3707 | unsigned char* base_; | |
c420411f ILT |
3708 | // True iff base_ points to a memory buffer rather than an output file. |
3709 | bool map_is_anonymous_; | |
516cb3d0 ILT |
3710 | // True if this is a temporary file which should not be output. |
3711 | bool is_temporary_; | |
a2fb1b05 ILT |
3712 | }; |
3713 | ||
3714 | } // End namespace gold. | |
3715 | ||
3716 | #endif // !defined(GOLD_OUTPUT_H) |