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a2fb1b05 ILT |
1 | // layout.cc -- lay out output file sections for gold |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
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 | #include "gold.h" |
24 | ||
a2fb1b05 | 25 | #include <cstring> |
54dc6425 | 26 | #include <algorithm> |
a2fb1b05 ILT |
27 | #include <iostream> |
28 | #include <utility> | |
29 | ||
7e1edb90 | 30 | #include "parameters.h" |
a2fb1b05 | 31 | #include "output.h" |
f6ce93d6 | 32 | #include "symtab.h" |
a3ad94ed | 33 | #include "dynobj.h" |
a2fb1b05 ILT |
34 | #include "layout.h" |
35 | ||
36 | namespace gold | |
37 | { | |
38 | ||
92e059d8 | 39 | // Layout_task_runner methods. |
a2fb1b05 ILT |
40 | |
41 | // Lay out the sections. This is called after all the input objects | |
42 | // have been read. | |
43 | ||
44 | void | |
92e059d8 | 45 | Layout_task_runner::run(Workqueue* workqueue) |
a2fb1b05 | 46 | { |
12e14209 ILT |
47 | off_t file_size = this->layout_->finalize(this->input_objects_, |
48 | this->symtab_); | |
61ba1cf9 ILT |
49 | |
50 | // Now we know the final size of the output file and we know where | |
51 | // each piece of information goes. | |
c51e6221 ILT |
52 | Output_file* of = new Output_file(this->options_, |
53 | this->input_objects_->target()); | |
61ba1cf9 ILT |
54 | of->open(file_size); |
55 | ||
56 | // Queue up the final set of tasks. | |
57 | gold::queue_final_tasks(this->options_, this->input_objects_, | |
12e14209 | 58 | this->symtab_, this->layout_, workqueue, of); |
a2fb1b05 ILT |
59 | } |
60 | ||
61 | // Layout methods. | |
62 | ||
54dc6425 | 63 | Layout::Layout(const General_options& options) |
a3ad94ed | 64 | : options_(options), namepool_(), sympool_(), dynpool_(), signatures_(), |
61ba1cf9 | 65 | section_name_map_(), segment_list_(), section_list_(), |
a3ad94ed | 66 | unattached_section_list_(), special_output_list_(), |
14b31740 ILT |
67 | tls_segment_(NULL), symtab_section_(NULL), |
68 | dynsym_section_(NULL), dynamic_section_(NULL), dynamic_data_(NULL) | |
54dc6425 ILT |
69 | { |
70 | // Make space for more than enough segments for a typical file. | |
71 | // This is just for efficiency--it's OK if we wind up needing more. | |
a3ad94ed ILT |
72 | this->segment_list_.reserve(12); |
73 | ||
74 | // We expect three unattached Output_data objects: the file header, | |
75 | // the segment headers, and the section headers. | |
76 | this->special_output_list_.reserve(3); | |
54dc6425 ILT |
77 | } |
78 | ||
a2fb1b05 ILT |
79 | // Hash a key we use to look up an output section mapping. |
80 | ||
81 | size_t | |
82 | Layout::Hash_key::operator()(const Layout::Key& k) const | |
83 | { | |
f0641a0b | 84 | return k.first + k.second.first + k.second.second; |
a2fb1b05 ILT |
85 | } |
86 | ||
87 | // Whether to include this section in the link. | |
88 | ||
89 | template<int size, bool big_endian> | |
90 | bool | |
91 | Layout::include_section(Object*, const char*, | |
92 | const elfcpp::Shdr<size, big_endian>& shdr) | |
93 | { | |
94 | // Some section types are never linked. Some are only linked when | |
95 | // doing a relocateable link. | |
96 | switch (shdr.get_sh_type()) | |
97 | { | |
98 | case elfcpp::SHT_NULL: | |
99 | case elfcpp::SHT_SYMTAB: | |
100 | case elfcpp::SHT_DYNSYM: | |
101 | case elfcpp::SHT_STRTAB: | |
102 | case elfcpp::SHT_HASH: | |
103 | case elfcpp::SHT_DYNAMIC: | |
104 | case elfcpp::SHT_SYMTAB_SHNDX: | |
105 | return false; | |
106 | ||
107 | case elfcpp::SHT_RELA: | |
108 | case elfcpp::SHT_REL: | |
109 | case elfcpp::SHT_GROUP: | |
7e1edb90 | 110 | return parameters->output_is_object(); |
a2fb1b05 ILT |
111 | |
112 | default: | |
113 | // FIXME: Handle stripping debug sections here. | |
114 | return true; | |
115 | } | |
116 | } | |
117 | ||
ead1e424 | 118 | // Return an output section named NAME, or NULL if there is none. |
a2fb1b05 | 119 | |
a2fb1b05 | 120 | Output_section* |
ead1e424 | 121 | Layout::find_output_section(const char* name) const |
a2fb1b05 | 122 | { |
ead1e424 ILT |
123 | for (Section_name_map::const_iterator p = this->section_name_map_.begin(); |
124 | p != this->section_name_map_.end(); | |
125 | ++p) | |
f0641a0b | 126 | if (strcmp(p->second->name(), name) == 0) |
ead1e424 ILT |
127 | return p->second; |
128 | return NULL; | |
129 | } | |
a2fb1b05 | 130 | |
ead1e424 ILT |
131 | // Return an output segment of type TYPE, with segment flags SET set |
132 | // and segment flags CLEAR clear. Return NULL if there is none. | |
a2fb1b05 | 133 | |
ead1e424 ILT |
134 | Output_segment* |
135 | Layout::find_output_segment(elfcpp::PT type, elfcpp::Elf_Word set, | |
136 | elfcpp::Elf_Word clear) const | |
137 | { | |
138 | for (Segment_list::const_iterator p = this->segment_list_.begin(); | |
139 | p != this->segment_list_.end(); | |
140 | ++p) | |
141 | if (static_cast<elfcpp::PT>((*p)->type()) == type | |
142 | && ((*p)->flags() & set) == set | |
143 | && ((*p)->flags() & clear) == 0) | |
144 | return *p; | |
145 | return NULL; | |
146 | } | |
a2fb1b05 | 147 | |
ead1e424 ILT |
148 | // Return the output section to use for section NAME with type TYPE |
149 | // and section flags FLAGS. | |
a2fb1b05 | 150 | |
ead1e424 | 151 | Output_section* |
f0641a0b ILT |
152 | Layout::get_output_section(const char* name, Stringpool::Key name_key, |
153 | elfcpp::Elf_Word type, elfcpp::Elf_Xword flags) | |
ead1e424 ILT |
154 | { |
155 | // We should ignore some flags. | |
156 | flags &= ~ (elfcpp::SHF_INFO_LINK | |
157 | | elfcpp::SHF_LINK_ORDER | |
b8e6aad9 ILT |
158 | | elfcpp::SHF_GROUP |
159 | | elfcpp::SHF_MERGE | |
160 | | elfcpp::SHF_STRINGS); | |
a2fb1b05 | 161 | |
f0641a0b | 162 | const Key key(name_key, std::make_pair(type, flags)); |
a2fb1b05 ILT |
163 | const std::pair<Key, Output_section*> v(key, NULL); |
164 | std::pair<Section_name_map::iterator, bool> ins( | |
165 | this->section_name_map_.insert(v)); | |
166 | ||
a2fb1b05 | 167 | if (!ins.second) |
ead1e424 | 168 | return ins.first->second; |
a2fb1b05 ILT |
169 | else |
170 | { | |
171 | // This is the first time we've seen this name/type/flags | |
172 | // combination. | |
ead1e424 | 173 | Output_section* os = this->make_output_section(name, type, flags); |
a2fb1b05 | 174 | ins.first->second = os; |
ead1e424 | 175 | return os; |
a2fb1b05 | 176 | } |
ead1e424 ILT |
177 | } |
178 | ||
179 | // Return the output section to use for input section SHNDX, with name | |
180 | // NAME, with header HEADER, from object OBJECT. Set *OFF to the | |
181 | // offset of this input section without the output section. | |
182 | ||
183 | template<int size, bool big_endian> | |
184 | Output_section* | |
f6ce93d6 | 185 | Layout::layout(Relobj* object, unsigned int shndx, const char* name, |
ead1e424 ILT |
186 | const elfcpp::Shdr<size, big_endian>& shdr, off_t* off) |
187 | { | |
188 | if (!this->include_section(object, name, shdr)) | |
189 | return NULL; | |
190 | ||
191 | // If we are not doing a relocateable link, choose the name to use | |
192 | // for the output section. | |
193 | size_t len = strlen(name); | |
7e1edb90 | 194 | if (!parameters->output_is_object()) |
ead1e424 ILT |
195 | name = Layout::output_section_name(name, &len); |
196 | ||
197 | // FIXME: Handle SHF_OS_NONCONFORMING here. | |
198 | ||
199 | // Canonicalize the section name. | |
f0641a0b ILT |
200 | Stringpool::Key name_key; |
201 | name = this->namepool_.add(name, len, &name_key); | |
ead1e424 ILT |
202 | |
203 | // Find the output section. The output section is selected based on | |
204 | // the section name, type, and flags. | |
f0641a0b ILT |
205 | Output_section* os = this->get_output_section(name, name_key, |
206 | shdr.get_sh_type(), | |
ead1e424 | 207 | shdr.get_sh_flags()); |
a2fb1b05 ILT |
208 | |
209 | // FIXME: Handle SHF_LINK_ORDER somewhere. | |
210 | ||
ead1e424 | 211 | *off = os->add_input_section(object, shndx, name, shdr); |
a2fb1b05 ILT |
212 | |
213 | return os; | |
214 | } | |
215 | ||
ead1e424 ILT |
216 | // Add POSD to an output section using NAME, TYPE, and FLAGS. |
217 | ||
218 | void | |
219 | Layout::add_output_section_data(const char* name, elfcpp::Elf_Word type, | |
220 | elfcpp::Elf_Xword flags, | |
221 | Output_section_data* posd) | |
222 | { | |
223 | // Canonicalize the name. | |
f0641a0b ILT |
224 | Stringpool::Key name_key; |
225 | name = this->namepool_.add(name, &name_key); | |
ead1e424 | 226 | |
f0641a0b | 227 | Output_section* os = this->get_output_section(name, name_key, type, flags); |
ead1e424 ILT |
228 | os->add_output_section_data(posd); |
229 | } | |
230 | ||
a2fb1b05 ILT |
231 | // Map section flags to segment flags. |
232 | ||
233 | elfcpp::Elf_Word | |
234 | Layout::section_flags_to_segment(elfcpp::Elf_Xword flags) | |
235 | { | |
236 | elfcpp::Elf_Word ret = elfcpp::PF_R; | |
237 | if ((flags & elfcpp::SHF_WRITE) != 0) | |
238 | ret |= elfcpp::PF_W; | |
239 | if ((flags & elfcpp::SHF_EXECINSTR) != 0) | |
240 | ret |= elfcpp::PF_X; | |
241 | return ret; | |
242 | } | |
243 | ||
244 | // Make a new Output_section, and attach it to segments as | |
245 | // appropriate. | |
246 | ||
247 | Output_section* | |
248 | Layout::make_output_section(const char* name, elfcpp::Elf_Word type, | |
249 | elfcpp::Elf_Xword flags) | |
250 | { | |
b8e6aad9 | 251 | Output_section* os = new Output_section(name, type, flags); |
a3ad94ed | 252 | this->section_list_.push_back(os); |
a2fb1b05 ILT |
253 | |
254 | if ((flags & elfcpp::SHF_ALLOC) == 0) | |
a3ad94ed | 255 | this->unattached_section_list_.push_back(os); |
a2fb1b05 ILT |
256 | else |
257 | { | |
258 | // This output section goes into a PT_LOAD segment. | |
259 | ||
260 | elfcpp::Elf_Word seg_flags = Layout::section_flags_to_segment(flags); | |
261 | ||
262 | // The only thing we really care about for PT_LOAD segments is | |
263 | // whether or not they are writable, so that is how we search | |
264 | // for them. People who need segments sorted on some other | |
265 | // basis will have to wait until we implement a mechanism for | |
266 | // them to describe the segments they want. | |
267 | ||
268 | Segment_list::const_iterator p; | |
269 | for (p = this->segment_list_.begin(); | |
270 | p != this->segment_list_.end(); | |
271 | ++p) | |
272 | { | |
273 | if ((*p)->type() == elfcpp::PT_LOAD | |
274 | && ((*p)->flags() & elfcpp::PF_W) == (seg_flags & elfcpp::PF_W)) | |
275 | { | |
75f65a3e | 276 | (*p)->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
277 | break; |
278 | } | |
279 | } | |
280 | ||
281 | if (p == this->segment_list_.end()) | |
282 | { | |
283 | Output_segment* oseg = new Output_segment(elfcpp::PT_LOAD, | |
284 | seg_flags); | |
285 | this->segment_list_.push_back(oseg); | |
75f65a3e | 286 | oseg->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
287 | } |
288 | ||
289 | // If we see a loadable SHT_NOTE section, we create a PT_NOTE | |
290 | // segment. | |
291 | if (type == elfcpp::SHT_NOTE) | |
292 | { | |
293 | // See if we already have an equivalent PT_NOTE segment. | |
294 | for (p = this->segment_list_.begin(); | |
295 | p != segment_list_.end(); | |
296 | ++p) | |
297 | { | |
298 | if ((*p)->type() == elfcpp::PT_NOTE | |
299 | && (((*p)->flags() & elfcpp::PF_W) | |
300 | == (seg_flags & elfcpp::PF_W))) | |
301 | { | |
75f65a3e | 302 | (*p)->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
303 | break; |
304 | } | |
305 | } | |
306 | ||
307 | if (p == this->segment_list_.end()) | |
308 | { | |
309 | Output_segment* oseg = new Output_segment(elfcpp::PT_NOTE, | |
310 | seg_flags); | |
311 | this->segment_list_.push_back(oseg); | |
75f65a3e | 312 | oseg->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
313 | } |
314 | } | |
54dc6425 ILT |
315 | |
316 | // If we see a loadable SHF_TLS section, we create a PT_TLS | |
92e059d8 | 317 | // segment. There can only be one such segment. |
54dc6425 ILT |
318 | if ((flags & elfcpp::SHF_TLS) != 0) |
319 | { | |
92e059d8 | 320 | if (this->tls_segment_ == NULL) |
54dc6425 | 321 | { |
92e059d8 ILT |
322 | this->tls_segment_ = new Output_segment(elfcpp::PT_TLS, |
323 | seg_flags); | |
324 | this->segment_list_.push_back(this->tls_segment_); | |
54dc6425 | 325 | } |
92e059d8 | 326 | this->tls_segment_->add_output_section(os, seg_flags); |
54dc6425 | 327 | } |
a2fb1b05 ILT |
328 | } |
329 | ||
330 | return os; | |
331 | } | |
332 | ||
a3ad94ed ILT |
333 | // Create the dynamic sections which are needed before we read the |
334 | // relocs. | |
335 | ||
336 | void | |
337 | Layout::create_initial_dynamic_sections(const Input_objects* input_objects, | |
338 | Symbol_table* symtab) | |
339 | { | |
340 | if (!input_objects->any_dynamic()) | |
341 | return; | |
342 | ||
343 | const char* dynamic_name = this->namepool_.add(".dynamic", NULL); | |
344 | this->dynamic_section_ = this->make_output_section(dynamic_name, | |
345 | elfcpp::SHT_DYNAMIC, | |
346 | (elfcpp::SHF_ALLOC | |
347 | | elfcpp::SHF_WRITE)); | |
348 | ||
14b31740 | 349 | symtab->define_in_output_data(input_objects->target(), "_DYNAMIC", NULL, |
a3ad94ed ILT |
350 | this->dynamic_section_, 0, 0, |
351 | elfcpp::STT_OBJECT, elfcpp::STB_LOCAL, | |
352 | elfcpp::STV_HIDDEN, 0, false, false); | |
16649710 ILT |
353 | |
354 | this->dynamic_data_ = new Output_data_dynamic(input_objects->target(), | |
355 | &this->dynpool_); | |
356 | ||
357 | this->dynamic_section_->add_output_section_data(this->dynamic_data_); | |
a3ad94ed ILT |
358 | } |
359 | ||
bfd58944 ILT |
360 | // For each output section whose name can be represented as C symbol, |
361 | // define __start and __stop symbols for the section. This is a GNU | |
362 | // extension. | |
363 | ||
364 | void | |
365 | Layout::define_section_symbols(Symbol_table* symtab, const Target* target) | |
366 | { | |
367 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
368 | p != this->section_list_.end(); | |
369 | ++p) | |
370 | { | |
371 | const char* const name = (*p)->name(); | |
372 | if (name[strspn(name, | |
373 | ("0123456789" | |
374 | "ABCDEFGHIJKLMNOPWRSTUVWXYZ" | |
375 | "abcdefghijklmnopqrstuvwxyz" | |
376 | "_"))] | |
377 | == '\0') | |
378 | { | |
379 | const std::string name_string(name); | |
380 | const std::string start_name("__start_" + name_string); | |
381 | const std::string stop_name("__stop_" + name_string); | |
382 | ||
383 | symtab->define_in_output_data(target, | |
384 | start_name.c_str(), | |
385 | NULL, // version | |
386 | *p, | |
387 | 0, // value | |
388 | 0, // symsize | |
389 | elfcpp::STT_NOTYPE, | |
390 | elfcpp::STB_GLOBAL, | |
391 | elfcpp::STV_DEFAULT, | |
392 | 0, // nonvis | |
393 | false, // offset_is_from_end | |
394 | false); // only_if_ref | |
395 | ||
396 | symtab->define_in_output_data(target, | |
397 | stop_name.c_str(), | |
398 | NULL, // version | |
399 | *p, | |
400 | 0, // value | |
401 | 0, // symsize | |
402 | elfcpp::STT_NOTYPE, | |
403 | elfcpp::STB_GLOBAL, | |
404 | elfcpp::STV_DEFAULT, | |
405 | 0, // nonvis | |
406 | true, // offset_is_from_end | |
407 | false); // only_if_ref | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
75f65a3e ILT |
412 | // Find the first read-only PT_LOAD segment, creating one if |
413 | // necessary. | |
54dc6425 | 414 | |
75f65a3e ILT |
415 | Output_segment* |
416 | Layout::find_first_load_seg() | |
54dc6425 | 417 | { |
75f65a3e ILT |
418 | for (Segment_list::const_iterator p = this->segment_list_.begin(); |
419 | p != this->segment_list_.end(); | |
420 | ++p) | |
421 | { | |
422 | if ((*p)->type() == elfcpp::PT_LOAD | |
423 | && ((*p)->flags() & elfcpp::PF_R) != 0 | |
424 | && ((*p)->flags() & elfcpp::PF_W) == 0) | |
425 | return *p; | |
426 | } | |
427 | ||
428 | Output_segment* load_seg = new Output_segment(elfcpp::PT_LOAD, elfcpp::PF_R); | |
429 | this->segment_list_.push_back(load_seg); | |
430 | return load_seg; | |
54dc6425 ILT |
431 | } |
432 | ||
433 | // Finalize the layout. When this is called, we have created all the | |
434 | // output sections and all the output segments which are based on | |
435 | // input sections. We have several things to do, and we have to do | |
436 | // them in the right order, so that we get the right results correctly | |
437 | // and efficiently. | |
438 | ||
439 | // 1) Finalize the list of output segments and create the segment | |
440 | // table header. | |
441 | ||
442 | // 2) Finalize the dynamic symbol table and associated sections. | |
443 | ||
444 | // 3) Determine the final file offset of all the output segments. | |
445 | ||
446 | // 4) Determine the final file offset of all the SHF_ALLOC output | |
447 | // sections. | |
448 | ||
75f65a3e ILT |
449 | // 5) Create the symbol table sections and the section name table |
450 | // section. | |
451 | ||
452 | // 6) Finalize the symbol table: set symbol values to their final | |
54dc6425 ILT |
453 | // value and make a final determination of which symbols are going |
454 | // into the output symbol table. | |
455 | ||
54dc6425 ILT |
456 | // 7) Create the section table header. |
457 | ||
458 | // 8) Determine the final file offset of all the output sections which | |
459 | // are not SHF_ALLOC, including the section table header. | |
460 | ||
461 | // 9) Finalize the ELF file header. | |
462 | ||
75f65a3e ILT |
463 | // This function returns the size of the output file. |
464 | ||
465 | off_t | |
466 | Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab) | |
54dc6425 | 467 | { |
5a6f7e2d | 468 | Target* const target = input_objects->target(); |
a3ad94ed | 469 | const int size = target->get_size(); |
dbe717ef | 470 | |
7e1edb90 | 471 | target->finalize_sections(this); |
5a6f7e2d | 472 | |
dbe717ef | 473 | Output_segment* phdr_seg = NULL; |
54dc6425 ILT |
474 | if (input_objects->any_dynamic()) |
475 | { | |
dbe717ef ILT |
476 | // There was a dynamic object in the link. We need to create |
477 | // some information for the dynamic linker. | |
478 | ||
479 | // Create the PT_PHDR segment which will hold the program | |
480 | // headers. | |
481 | phdr_seg = new Output_segment(elfcpp::PT_PHDR, elfcpp::PF_R); | |
482 | this->segment_list_.push_back(phdr_seg); | |
483 | ||
14b31740 ILT |
484 | // Create the dynamic symbol table, including the hash table. |
485 | Output_section* dynstr; | |
486 | std::vector<Symbol*> dynamic_symbols; | |
487 | unsigned int local_dynamic_count; | |
488 | Versions versions; | |
489 | this->create_dynamic_symtab(target, symtab, &dynstr, | |
490 | &local_dynamic_count, &dynamic_symbols, | |
491 | &versions); | |
dbe717ef ILT |
492 | |
493 | // Create the .interp section to hold the name of the | |
494 | // interpreter, and put it in a PT_INTERP segment. | |
a3ad94ed ILT |
495 | this->create_interp(target); |
496 | ||
497 | // Finish the .dynamic section to hold the dynamic data, and put | |
498 | // it in a PT_DYNAMIC segment. | |
16649710 | 499 | this->finish_dynamic_section(input_objects, symtab); |
14b31740 ILT |
500 | |
501 | // We should have added everything we need to the dynamic string | |
502 | // table. | |
503 | this->dynpool_.set_string_offsets(); | |
504 | ||
505 | // Create the version sections. We can't do this until the | |
506 | // dynamic string table is complete. | |
507 | this->create_version_sections(target, &versions, local_dynamic_count, | |
508 | dynamic_symbols, dynstr); | |
54dc6425 ILT |
509 | } |
510 | ||
511 | // FIXME: Handle PT_GNU_STACK. | |
512 | ||
75f65a3e ILT |
513 | Output_segment* load_seg = this->find_first_load_seg(); |
514 | ||
515 | // Lay out the segment headers. | |
a3ad94ed | 516 | bool big_endian = target->is_big_endian(); |
75f65a3e | 517 | Output_segment_headers* segment_headers; |
61ba1cf9 ILT |
518 | segment_headers = new Output_segment_headers(size, big_endian, |
519 | this->segment_list_); | |
75f65a3e | 520 | load_seg->add_initial_output_data(segment_headers); |
61ba1cf9 | 521 | this->special_output_list_.push_back(segment_headers); |
dbe717ef ILT |
522 | if (phdr_seg != NULL) |
523 | phdr_seg->add_initial_output_data(segment_headers); | |
75f65a3e ILT |
524 | |
525 | // Lay out the file header. | |
526 | Output_file_header* file_header; | |
527 | file_header = new Output_file_header(size, | |
61ba1cf9 | 528 | big_endian, |
a3ad94ed | 529 | target, |
75f65a3e ILT |
530 | symtab, |
531 | segment_headers); | |
532 | load_seg->add_initial_output_data(file_header); | |
61ba1cf9 | 533 | this->special_output_list_.push_back(file_header); |
75f65a3e | 534 | |
ead1e424 ILT |
535 | // We set the output section indexes in set_segment_offsets and |
536 | // set_section_offsets. | |
537 | unsigned int shndx = 1; | |
538 | ||
539 | // Set the file offsets of all the segments, and all the sections | |
540 | // they contain. | |
a3ad94ed | 541 | off_t off = this->set_segment_offsets(target, load_seg, &shndx); |
75f65a3e ILT |
542 | |
543 | // Create the symbol table sections. | |
16649710 | 544 | this->create_symtab_sections(size, input_objects, symtab, &off); |
75f65a3e ILT |
545 | |
546 | // Create the .shstrtab section. | |
547 | Output_section* shstrtab_section = this->create_shstrtab(); | |
548 | ||
549 | // Set the file offsets of all the sections not associated with | |
550 | // segments. | |
ead1e424 ILT |
551 | off = this->set_section_offsets(off, &shndx); |
552 | ||
75f65a3e | 553 | // Create the section table header. |
61ba1cf9 | 554 | Output_section_headers* oshdrs = this->create_shdrs(size, big_endian, &off); |
75f65a3e ILT |
555 | |
556 | file_header->set_section_info(oshdrs, shstrtab_section); | |
557 | ||
558 | // Now we know exactly where everything goes in the output file. | |
a3ad94ed | 559 | Output_data::layout_complete(); |
75f65a3e ILT |
560 | |
561 | return off; | |
562 | } | |
563 | ||
564 | // Return whether SEG1 should be before SEG2 in the output file. This | |
565 | // is based entirely on the segment type and flags. When this is | |
566 | // called the segment addresses has normally not yet been set. | |
567 | ||
568 | bool | |
569 | Layout::segment_precedes(const Output_segment* seg1, | |
570 | const Output_segment* seg2) | |
571 | { | |
572 | elfcpp::Elf_Word type1 = seg1->type(); | |
573 | elfcpp::Elf_Word type2 = seg2->type(); | |
574 | ||
575 | // The single PT_PHDR segment is required to precede any loadable | |
576 | // segment. We simply make it always first. | |
577 | if (type1 == elfcpp::PT_PHDR) | |
578 | { | |
a3ad94ed | 579 | gold_assert(type2 != elfcpp::PT_PHDR); |
75f65a3e ILT |
580 | return true; |
581 | } | |
582 | if (type2 == elfcpp::PT_PHDR) | |
583 | return false; | |
584 | ||
585 | // The single PT_INTERP segment is required to precede any loadable | |
586 | // segment. We simply make it always second. | |
587 | if (type1 == elfcpp::PT_INTERP) | |
588 | { | |
a3ad94ed | 589 | gold_assert(type2 != elfcpp::PT_INTERP); |
75f65a3e ILT |
590 | return true; |
591 | } | |
592 | if (type2 == elfcpp::PT_INTERP) | |
593 | return false; | |
594 | ||
595 | // We then put PT_LOAD segments before any other segments. | |
596 | if (type1 == elfcpp::PT_LOAD && type2 != elfcpp::PT_LOAD) | |
597 | return true; | |
598 | if (type2 == elfcpp::PT_LOAD && type1 != elfcpp::PT_LOAD) | |
599 | return false; | |
600 | ||
92e059d8 ILT |
601 | // We put the PT_TLS segment last, because that is where the dynamic |
602 | // linker expects to find it (this is just for efficiency; other | |
603 | // positions would also work correctly). | |
604 | if (type1 == elfcpp::PT_TLS && type2 != elfcpp::PT_TLS) | |
605 | return false; | |
606 | if (type2 == elfcpp::PT_TLS && type1 != elfcpp::PT_TLS) | |
607 | return true; | |
608 | ||
75f65a3e ILT |
609 | const elfcpp::Elf_Word flags1 = seg1->flags(); |
610 | const elfcpp::Elf_Word flags2 = seg2->flags(); | |
611 | ||
612 | // The order of non-PT_LOAD segments is unimportant. We simply sort | |
613 | // by the numeric segment type and flags values. There should not | |
614 | // be more than one segment with the same type and flags. | |
615 | if (type1 != elfcpp::PT_LOAD) | |
616 | { | |
617 | if (type1 != type2) | |
618 | return type1 < type2; | |
a3ad94ed | 619 | gold_assert(flags1 != flags2); |
75f65a3e ILT |
620 | return flags1 < flags2; |
621 | } | |
622 | ||
623 | // We sort PT_LOAD segments based on the flags. Readonly segments | |
624 | // come before writable segments. Then executable segments come | |
625 | // before non-executable segments. Then the unlikely case of a | |
626 | // non-readable segment comes before the normal case of a readable | |
627 | // segment. If there are multiple segments with the same type and | |
628 | // flags, we require that the address be set, and we sort by | |
629 | // virtual address and then physical address. | |
630 | if ((flags1 & elfcpp::PF_W) != (flags2 & elfcpp::PF_W)) | |
631 | return (flags1 & elfcpp::PF_W) == 0; | |
632 | if ((flags1 & elfcpp::PF_X) != (flags2 & elfcpp::PF_X)) | |
633 | return (flags1 & elfcpp::PF_X) != 0; | |
634 | if ((flags1 & elfcpp::PF_R) != (flags2 & elfcpp::PF_R)) | |
635 | return (flags1 & elfcpp::PF_R) == 0; | |
636 | ||
637 | uint64_t vaddr1 = seg1->vaddr(); | |
638 | uint64_t vaddr2 = seg2->vaddr(); | |
639 | if (vaddr1 != vaddr2) | |
640 | return vaddr1 < vaddr2; | |
641 | ||
642 | uint64_t paddr1 = seg1->paddr(); | |
643 | uint64_t paddr2 = seg2->paddr(); | |
a3ad94ed | 644 | gold_assert(paddr1 != paddr2); |
75f65a3e ILT |
645 | return paddr1 < paddr2; |
646 | } | |
647 | ||
ead1e424 ILT |
648 | // Set the file offsets of all the segments, and all the sections they |
649 | // contain. They have all been created. LOAD_SEG must be be laid out | |
650 | // first. Return the offset of the data to follow. | |
75f65a3e ILT |
651 | |
652 | off_t | |
ead1e424 ILT |
653 | Layout::set_segment_offsets(const Target* target, Output_segment* load_seg, |
654 | unsigned int *pshndx) | |
75f65a3e ILT |
655 | { |
656 | // Sort them into the final order. | |
54dc6425 ILT |
657 | std::sort(this->segment_list_.begin(), this->segment_list_.end(), |
658 | Layout::Compare_segments()); | |
659 | ||
75f65a3e ILT |
660 | // Find the PT_LOAD segments, and set their addresses and offsets |
661 | // and their section's addresses and offsets. | |
662 | uint64_t addr = target->text_segment_address(); | |
663 | off_t off = 0; | |
664 | bool was_readonly = false; | |
665 | for (Segment_list::iterator p = this->segment_list_.begin(); | |
666 | p != this->segment_list_.end(); | |
667 | ++p) | |
668 | { | |
669 | if ((*p)->type() == elfcpp::PT_LOAD) | |
670 | { | |
671 | if (load_seg != NULL && load_seg != *p) | |
a3ad94ed | 672 | gold_unreachable(); |
75f65a3e ILT |
673 | load_seg = NULL; |
674 | ||
675 | // If the last segment was readonly, and this one is not, | |
676 | // then skip the address forward one page, maintaining the | |
677 | // same position within the page. This lets us store both | |
678 | // segments overlapping on a single page in the file, but | |
679 | // the loader will put them on different pages in memory. | |
680 | ||
681 | uint64_t orig_addr = addr; | |
682 | uint64_t orig_off = off; | |
683 | ||
684 | uint64_t aligned_addr = addr; | |
685 | uint64_t abi_pagesize = target->abi_pagesize(); | |
0496d5e5 ILT |
686 | |
687 | // FIXME: This should depend on the -n and -N options. | |
688 | (*p)->set_minimum_addralign(target->common_pagesize()); | |
689 | ||
75f65a3e ILT |
690 | if (was_readonly && ((*p)->flags() & elfcpp::PF_W) != 0) |
691 | { | |
ead1e424 | 692 | uint64_t align = (*p)->addralign(); |
75f65a3e | 693 | |
ead1e424 | 694 | addr = align_address(addr, align); |
75f65a3e ILT |
695 | aligned_addr = addr; |
696 | if ((addr & (abi_pagesize - 1)) != 0) | |
697 | addr = addr + abi_pagesize; | |
698 | } | |
699 | ||
ead1e424 | 700 | unsigned int shndx_hold = *pshndx; |
75f65a3e | 701 | off = orig_off + ((addr - orig_addr) & (abi_pagesize - 1)); |
ead1e424 | 702 | uint64_t new_addr = (*p)->set_section_addresses(addr, &off, pshndx); |
75f65a3e ILT |
703 | |
704 | // Now that we know the size of this segment, we may be able | |
705 | // to save a page in memory, at the cost of wasting some | |
706 | // file space, by instead aligning to the start of a new | |
707 | // page. Here we use the real machine page size rather than | |
708 | // the ABI mandated page size. | |
709 | ||
710 | if (aligned_addr != addr) | |
711 | { | |
712 | uint64_t common_pagesize = target->common_pagesize(); | |
713 | uint64_t first_off = (common_pagesize | |
714 | - (aligned_addr | |
715 | & (common_pagesize - 1))); | |
716 | uint64_t last_off = new_addr & (common_pagesize - 1); | |
717 | if (first_off > 0 | |
718 | && last_off > 0 | |
719 | && ((aligned_addr & ~ (common_pagesize - 1)) | |
720 | != (new_addr & ~ (common_pagesize - 1))) | |
721 | && first_off + last_off <= common_pagesize) | |
722 | { | |
ead1e424 ILT |
723 | *pshndx = shndx_hold; |
724 | addr = align_address(aligned_addr, common_pagesize); | |
75f65a3e | 725 | off = orig_off + ((addr - orig_addr) & (abi_pagesize - 1)); |
ead1e424 | 726 | new_addr = (*p)->set_section_addresses(addr, &off, pshndx); |
75f65a3e ILT |
727 | } |
728 | } | |
729 | ||
730 | addr = new_addr; | |
731 | ||
732 | if (((*p)->flags() & elfcpp::PF_W) == 0) | |
733 | was_readonly = true; | |
734 | } | |
735 | } | |
736 | ||
737 | // Handle the non-PT_LOAD segments, setting their offsets from their | |
738 | // section's offsets. | |
739 | for (Segment_list::iterator p = this->segment_list_.begin(); | |
740 | p != this->segment_list_.end(); | |
741 | ++p) | |
742 | { | |
743 | if ((*p)->type() != elfcpp::PT_LOAD) | |
744 | (*p)->set_offset(); | |
745 | } | |
746 | ||
747 | return off; | |
748 | } | |
749 | ||
750 | // Set the file offset of all the sections not associated with a | |
751 | // segment. | |
752 | ||
753 | off_t | |
ead1e424 | 754 | Layout::set_section_offsets(off_t off, unsigned int* pshndx) |
75f65a3e | 755 | { |
a3ad94ed ILT |
756 | for (Section_list::iterator p = this->unattached_section_list_.begin(); |
757 | p != this->unattached_section_list_.end(); | |
75f65a3e ILT |
758 | ++p) |
759 | { | |
ead1e424 ILT |
760 | (*p)->set_out_shndx(*pshndx); |
761 | ++*pshndx; | |
61ba1cf9 ILT |
762 | if ((*p)->offset() != -1) |
763 | continue; | |
ead1e424 | 764 | off = align_address(off, (*p)->addralign()); |
75f65a3e ILT |
765 | (*p)->set_address(0, off); |
766 | off += (*p)->data_size(); | |
767 | } | |
768 | return off; | |
769 | } | |
770 | ||
b8e6aad9 ILT |
771 | // Create the symbol table sections. Here we also set the final |
772 | // values of the symbols. At this point all the loadable sections are | |
773 | // fully laid out. | |
75f65a3e ILT |
774 | |
775 | void | |
61ba1cf9 | 776 | Layout::create_symtab_sections(int size, const Input_objects* input_objects, |
75f65a3e | 777 | Symbol_table* symtab, |
16649710 | 778 | off_t* poff) |
75f65a3e | 779 | { |
61ba1cf9 ILT |
780 | int symsize; |
781 | unsigned int align; | |
782 | if (size == 32) | |
783 | { | |
784 | symsize = elfcpp::Elf_sizes<32>::sym_size; | |
785 | align = 4; | |
786 | } | |
787 | else if (size == 64) | |
788 | { | |
789 | symsize = elfcpp::Elf_sizes<64>::sym_size; | |
790 | align = 8; | |
791 | } | |
792 | else | |
a3ad94ed | 793 | gold_unreachable(); |
61ba1cf9 ILT |
794 | |
795 | off_t off = *poff; | |
ead1e424 | 796 | off = align_address(off, align); |
61ba1cf9 ILT |
797 | off_t startoff = off; |
798 | ||
799 | // Save space for the dummy symbol at the start of the section. We | |
800 | // never bother to write this out--it will just be left as zero. | |
801 | off += symsize; | |
c06b7b0b | 802 | unsigned int local_symbol_index = 1; |
61ba1cf9 | 803 | |
a3ad94ed ILT |
804 | // Add STT_SECTION symbols for each Output section which needs one. |
805 | for (Section_list::iterator p = this->section_list_.begin(); | |
806 | p != this->section_list_.end(); | |
807 | ++p) | |
808 | { | |
809 | if (!(*p)->needs_symtab_index()) | |
810 | (*p)->set_symtab_index(-1U); | |
811 | else | |
812 | { | |
813 | (*p)->set_symtab_index(local_symbol_index); | |
814 | ++local_symbol_index; | |
815 | off += symsize; | |
816 | } | |
817 | } | |
818 | ||
f6ce93d6 ILT |
819 | for (Input_objects::Relobj_iterator p = input_objects->relobj_begin(); |
820 | p != input_objects->relobj_end(); | |
75f65a3e ILT |
821 | ++p) |
822 | { | |
823 | Task_lock_obj<Object> tlo(**p); | |
c06b7b0b ILT |
824 | unsigned int index = (*p)->finalize_local_symbols(local_symbol_index, |
825 | off, | |
826 | &this->sympool_); | |
827 | off += (index - local_symbol_index) * symsize; | |
828 | local_symbol_index = index; | |
75f65a3e ILT |
829 | } |
830 | ||
c06b7b0b | 831 | unsigned int local_symcount = local_symbol_index; |
a3ad94ed | 832 | gold_assert(local_symcount * symsize == off - startoff); |
61ba1cf9 | 833 | |
16649710 ILT |
834 | off_t dynoff; |
835 | size_t dyn_global_index; | |
836 | size_t dyncount; | |
837 | if (this->dynsym_section_ == NULL) | |
838 | { | |
839 | dynoff = 0; | |
840 | dyn_global_index = 0; | |
841 | dyncount = 0; | |
842 | } | |
843 | else | |
844 | { | |
845 | dyn_global_index = this->dynsym_section_->info(); | |
846 | off_t locsize = dyn_global_index * this->dynsym_section_->entsize(); | |
847 | dynoff = this->dynsym_section_->offset() + locsize; | |
848 | dyncount = (this->dynsym_section_->data_size() - locsize) / symsize; | |
849 | gold_assert(dyncount * symsize | |
850 | == this->dynsym_section_->data_size() - locsize); | |
851 | } | |
852 | ||
853 | off = symtab->finalize(local_symcount, off, dynoff, dyn_global_index, | |
854 | dyncount, &this->sympool_); | |
75f65a3e | 855 | |
61ba1cf9 ILT |
856 | this->sympool_.set_string_offsets(); |
857 | ||
f0641a0b | 858 | const char* symtab_name = this->namepool_.add(".symtab", NULL); |
a3ad94ed ILT |
859 | Output_section* osymtab = this->make_output_section(symtab_name, |
860 | elfcpp::SHT_SYMTAB, | |
861 | 0); | |
862 | this->symtab_section_ = osymtab; | |
863 | ||
864 | Output_section_data* pos = new Output_data_space(off - startoff, | |
865 | align); | |
866 | osymtab->add_output_section_data(pos); | |
61ba1cf9 | 867 | |
f0641a0b | 868 | const char* strtab_name = this->namepool_.add(".strtab", NULL); |
a3ad94ed ILT |
869 | Output_section* ostrtab = this->make_output_section(strtab_name, |
870 | elfcpp::SHT_STRTAB, | |
871 | 0); | |
872 | ||
873 | Output_section_data* pstr = new Output_data_strtab(&this->sympool_); | |
874 | ostrtab->add_output_section_data(pstr); | |
61ba1cf9 ILT |
875 | |
876 | osymtab->set_address(0, startoff); | |
16649710 | 877 | osymtab->set_link_section(ostrtab); |
61ba1cf9 ILT |
878 | osymtab->set_info(local_symcount); |
879 | osymtab->set_entsize(symsize); | |
61ba1cf9 ILT |
880 | |
881 | *poff = off; | |
75f65a3e ILT |
882 | } |
883 | ||
884 | // Create the .shstrtab section, which holds the names of the | |
885 | // sections. At the time this is called, we have created all the | |
886 | // output sections except .shstrtab itself. | |
887 | ||
888 | Output_section* | |
889 | Layout::create_shstrtab() | |
890 | { | |
891 | // FIXME: We don't need to create a .shstrtab section if we are | |
892 | // stripping everything. | |
893 | ||
f0641a0b | 894 | const char* name = this->namepool_.add(".shstrtab", NULL); |
75f65a3e | 895 | |
61ba1cf9 ILT |
896 | this->namepool_.set_string_offsets(); |
897 | ||
a3ad94ed | 898 | Output_section* os = this->make_output_section(name, elfcpp::SHT_STRTAB, 0); |
75f65a3e | 899 | |
a3ad94ed ILT |
900 | Output_section_data* posd = new Output_data_strtab(&this->namepool_); |
901 | os->add_output_section_data(posd); | |
75f65a3e ILT |
902 | |
903 | return os; | |
904 | } | |
905 | ||
906 | // Create the section headers. SIZE is 32 or 64. OFF is the file | |
907 | // offset. | |
908 | ||
909 | Output_section_headers* | |
61ba1cf9 | 910 | Layout::create_shdrs(int size, bool big_endian, off_t* poff) |
75f65a3e ILT |
911 | { |
912 | Output_section_headers* oshdrs; | |
16649710 ILT |
913 | oshdrs = new Output_section_headers(size, big_endian, this, |
914 | &this->segment_list_, | |
915 | &this->unattached_section_list_, | |
61ba1cf9 | 916 | &this->namepool_); |
ead1e424 | 917 | off_t off = align_address(*poff, oshdrs->addralign()); |
75f65a3e | 918 | oshdrs->set_address(0, off); |
61ba1cf9 ILT |
919 | off += oshdrs->data_size(); |
920 | *poff = off; | |
921 | this->special_output_list_.push_back(oshdrs); | |
75f65a3e | 922 | return oshdrs; |
54dc6425 ILT |
923 | } |
924 | ||
dbe717ef ILT |
925 | // Create the dynamic symbol table. |
926 | ||
927 | void | |
14b31740 ILT |
928 | Layout::create_dynamic_symtab(const Target* target, Symbol_table* symtab, |
929 | Output_section **pdynstr, | |
930 | unsigned int* plocal_dynamic_count, | |
931 | std::vector<Symbol*>* pdynamic_symbols, | |
932 | Versions* pversions) | |
dbe717ef | 933 | { |
a3ad94ed ILT |
934 | // Count all the symbols in the dynamic symbol table, and set the |
935 | // dynamic symbol indexes. | |
dbe717ef | 936 | |
a3ad94ed ILT |
937 | // Skip symbol 0, which is always all zeroes. |
938 | unsigned int index = 1; | |
dbe717ef | 939 | |
a3ad94ed ILT |
940 | // Add STT_SECTION symbols for each Output section which needs one. |
941 | for (Section_list::iterator p = this->section_list_.begin(); | |
942 | p != this->section_list_.end(); | |
943 | ++p) | |
944 | { | |
945 | if (!(*p)->needs_dynsym_index()) | |
946 | (*p)->set_dynsym_index(-1U); | |
947 | else | |
948 | { | |
949 | (*p)->set_dynsym_index(index); | |
950 | ++index; | |
951 | } | |
952 | } | |
953 | ||
954 | // FIXME: Some targets apparently require local symbols in the | |
955 | // dynamic symbol table. Here is where we will have to count them, | |
956 | // and set the dynamic symbol indexes, and add the names to | |
957 | // this->dynpool_. | |
958 | ||
959 | unsigned int local_symcount = index; | |
14b31740 | 960 | *plocal_dynamic_count = local_symcount; |
a3ad94ed ILT |
961 | |
962 | // FIXME: We have to tell set_dynsym_indexes whether the | |
963 | // -E/--export-dynamic option was used. | |
14b31740 ILT |
964 | index = symtab->set_dynsym_indexes(&this->options_, target, index, |
965 | pdynamic_symbols, &this->dynpool_, | |
966 | pversions); | |
a3ad94ed ILT |
967 | |
968 | int symsize; | |
969 | unsigned int align; | |
970 | const int size = target->get_size(); | |
971 | if (size == 32) | |
972 | { | |
973 | symsize = elfcpp::Elf_sizes<32>::sym_size; | |
974 | align = 4; | |
975 | } | |
976 | else if (size == 64) | |
977 | { | |
978 | symsize = elfcpp::Elf_sizes<64>::sym_size; | |
979 | align = 8; | |
980 | } | |
981 | else | |
982 | gold_unreachable(); | |
983 | ||
14b31740 ILT |
984 | // Create the dynamic symbol table section. |
985 | ||
a3ad94ed ILT |
986 | const char* dynsym_name = this->namepool_.add(".dynsym", NULL); |
987 | Output_section* dynsym = this->make_output_section(dynsym_name, | |
988 | elfcpp::SHT_DYNSYM, | |
989 | elfcpp::SHF_ALLOC); | |
990 | ||
991 | Output_section_data* odata = new Output_data_space(index * symsize, | |
992 | align); | |
993 | dynsym->add_output_section_data(odata); | |
994 | ||
995 | dynsym->set_info(local_symcount); | |
996 | dynsym->set_entsize(symsize); | |
997 | dynsym->set_addralign(align); | |
998 | ||
999 | this->dynsym_section_ = dynsym; | |
1000 | ||
16649710 | 1001 | Output_data_dynamic* const odyn = this->dynamic_data_; |
a3ad94ed ILT |
1002 | odyn->add_section_address(elfcpp::DT_SYMTAB, dynsym); |
1003 | odyn->add_constant(elfcpp::DT_SYMENT, symsize); | |
1004 | ||
14b31740 ILT |
1005 | // Create the dynamic string table section. |
1006 | ||
a3ad94ed ILT |
1007 | const char* dynstr_name = this->namepool_.add(".dynstr", NULL); |
1008 | Output_section* dynstr = this->make_output_section(dynstr_name, | |
1009 | elfcpp::SHT_STRTAB, | |
1010 | elfcpp::SHF_ALLOC); | |
1011 | ||
1012 | Output_section_data* strdata = new Output_data_strtab(&this->dynpool_); | |
1013 | dynstr->add_output_section_data(strdata); | |
1014 | ||
16649710 ILT |
1015 | dynsym->set_link_section(dynstr); |
1016 | this->dynamic_section_->set_link_section(dynstr); | |
1017 | ||
a3ad94ed ILT |
1018 | odyn->add_section_address(elfcpp::DT_STRTAB, dynstr); |
1019 | odyn->add_section_size(elfcpp::DT_STRSZ, dynstr); | |
1020 | ||
14b31740 ILT |
1021 | *pdynstr = dynstr; |
1022 | ||
1023 | // Create the hash tables. | |
1024 | ||
a3ad94ed ILT |
1025 | // FIXME: We need an option to create a GNU hash table. |
1026 | ||
1027 | unsigned char* phash; | |
1028 | unsigned int hashlen; | |
14b31740 | 1029 | Dynobj::create_elf_hash_table(target, *pdynamic_symbols, local_symcount, |
a3ad94ed ILT |
1030 | &phash, &hashlen); |
1031 | ||
1032 | const char* hash_name = this->namepool_.add(".hash", NULL); | |
1033 | Output_section* hashsec = this->make_output_section(hash_name, | |
1034 | elfcpp::SHT_HASH, | |
1035 | elfcpp::SHF_ALLOC); | |
1036 | ||
1037 | Output_section_data* hashdata = new Output_data_const_buffer(phash, | |
1038 | hashlen, | |
1039 | align); | |
1040 | hashsec->add_output_section_data(hashdata); | |
1041 | ||
16649710 | 1042 | hashsec->set_link_section(dynsym); |
a3ad94ed | 1043 | hashsec->set_entsize(4); |
a3ad94ed ILT |
1044 | |
1045 | odyn->add_section_address(elfcpp::DT_HASH, hashsec); | |
dbe717ef ILT |
1046 | } |
1047 | ||
14b31740 ILT |
1048 | // Create the version sections. |
1049 | ||
1050 | void | |
1051 | Layout::create_version_sections(const Target* target, const Versions* versions, | |
1052 | unsigned int local_symcount, | |
1053 | const std::vector<Symbol*>& dynamic_symbols, | |
1054 | const Output_section* dynstr) | |
1055 | { | |
1056 | if (!versions->any_defs() && !versions->any_needs()) | |
1057 | return; | |
1058 | ||
1059 | if (target->get_size() == 32) | |
1060 | { | |
1061 | if (target->is_big_endian()) | |
193a53d9 ILT |
1062 | { |
1063 | #ifdef HAVE_TARGET_32_BIG | |
1064 | this->sized_create_version_sections | |
1065 | SELECT_SIZE_ENDIAN_NAME(32, true)( | |
1066 | versions, local_symcount, dynamic_symbols, dynstr | |
1067 | SELECT_SIZE_ENDIAN(32, true)); | |
1068 | #else | |
1069 | gold_unreachable(); | |
1070 | #endif | |
1071 | } | |
14b31740 | 1072 | else |
193a53d9 ILT |
1073 | { |
1074 | #ifdef HAVE_TARGET_32_LITTLE | |
1075 | this->sized_create_version_sections | |
1076 | SELECT_SIZE_ENDIAN_NAME(32, false)( | |
1077 | versions, local_symcount, dynamic_symbols, dynstr | |
1078 | SELECT_SIZE_ENDIAN(32, false)); | |
1079 | #else | |
1080 | gold_unreachable(); | |
1081 | #endif | |
1082 | } | |
14b31740 ILT |
1083 | } |
1084 | else if (target->get_size() == 64) | |
1085 | { | |
1086 | if (target->is_big_endian()) | |
193a53d9 ILT |
1087 | { |
1088 | #ifdef HAVE_TARGET_64_BIG | |
1089 | this->sized_create_version_sections | |
1090 | SELECT_SIZE_ENDIAN_NAME(64, true)( | |
1091 | versions, local_symcount, dynamic_symbols, dynstr | |
1092 | SELECT_SIZE_ENDIAN(64, true)); | |
1093 | #else | |
1094 | gold_unreachable(); | |
1095 | #endif | |
1096 | } | |
14b31740 | 1097 | else |
193a53d9 ILT |
1098 | { |
1099 | #ifdef HAVE_TARGET_64_LITTLE | |
1100 | this->sized_create_version_sections | |
1101 | SELECT_SIZE_ENDIAN_NAME(64, false)( | |
1102 | versions, local_symcount, dynamic_symbols, dynstr | |
1103 | SELECT_SIZE_ENDIAN(64, false)); | |
1104 | #else | |
1105 | gold_unreachable(); | |
1106 | #endif | |
1107 | } | |
14b31740 ILT |
1108 | } |
1109 | else | |
1110 | gold_unreachable(); | |
1111 | } | |
1112 | ||
1113 | // Create the version sections, sized version. | |
1114 | ||
1115 | template<int size, bool big_endian> | |
1116 | void | |
1117 | Layout::sized_create_version_sections( | |
1118 | const Versions* versions, | |
1119 | unsigned int local_symcount, | |
1120 | const std::vector<Symbol*>& dynamic_symbols, | |
91da9340 ILT |
1121 | const Output_section* dynstr |
1122 | ACCEPT_SIZE_ENDIAN) | |
14b31740 ILT |
1123 | { |
1124 | const char* vname = this->namepool_.add(".gnu.version", NULL); | |
1125 | Output_section* vsec = this->make_output_section(vname, | |
1126 | elfcpp::SHT_GNU_versym, | |
1127 | elfcpp::SHF_ALLOC); | |
1128 | ||
1129 | unsigned char* vbuf; | |
1130 | unsigned int vsize; | |
91da9340 | 1131 | versions->symbol_section_contents SELECT_SIZE_ENDIAN_NAME(size, big_endian)( |
7e1edb90 ILT |
1132 | &this->dynpool_, local_symcount, dynamic_symbols, &vbuf, &vsize |
1133 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
14b31740 ILT |
1134 | |
1135 | Output_section_data* vdata = new Output_data_const_buffer(vbuf, vsize, 2); | |
1136 | ||
1137 | vsec->add_output_section_data(vdata); | |
1138 | vsec->set_entsize(2); | |
1139 | vsec->set_link_section(this->dynsym_section_); | |
1140 | ||
1141 | Output_data_dynamic* const odyn = this->dynamic_data_; | |
1142 | odyn->add_section_address(elfcpp::DT_VERSYM, vsec); | |
1143 | ||
1144 | if (versions->any_defs()) | |
1145 | { | |
1146 | const char* vdname = this->namepool_.add(".gnu.version_d", NULL); | |
1147 | Output_section *vdsec; | |
1148 | vdsec = this->make_output_section(vdname, elfcpp::SHT_GNU_verdef, | |
1149 | elfcpp::SHF_ALLOC); | |
1150 | ||
1151 | unsigned char* vdbuf; | |
1152 | unsigned int vdsize; | |
1153 | unsigned int vdentries; | |
91da9340 ILT |
1154 | versions->def_section_contents SELECT_SIZE_ENDIAN_NAME(size, big_endian)( |
1155 | &this->dynpool_, &vdbuf, &vdsize, &vdentries | |
1156 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
14b31740 ILT |
1157 | |
1158 | Output_section_data* vddata = new Output_data_const_buffer(vdbuf, | |
1159 | vdsize, | |
1160 | 4); | |
1161 | ||
1162 | vdsec->add_output_section_data(vddata); | |
1163 | vdsec->set_link_section(dynstr); | |
1164 | vdsec->set_info(vdentries); | |
1165 | ||
1166 | odyn->add_section_address(elfcpp::DT_VERDEF, vdsec); | |
1167 | odyn->add_constant(elfcpp::DT_VERDEFNUM, vdentries); | |
1168 | } | |
1169 | ||
1170 | if (versions->any_needs()) | |
1171 | { | |
1172 | const char* vnname = this->namepool_.add(".gnu.version_r", NULL); | |
1173 | Output_section* vnsec; | |
1174 | vnsec = this->make_output_section(vnname, elfcpp::SHT_GNU_verneed, | |
1175 | elfcpp::SHF_ALLOC); | |
1176 | ||
1177 | unsigned char* vnbuf; | |
1178 | unsigned int vnsize; | |
1179 | unsigned int vnentries; | |
91da9340 ILT |
1180 | versions->need_section_contents SELECT_SIZE_ENDIAN_NAME(size, big_endian) |
1181 | (&this->dynpool_, &vnbuf, &vnsize, &vnentries | |
1182 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
14b31740 ILT |
1183 | |
1184 | Output_section_data* vndata = new Output_data_const_buffer(vnbuf, | |
1185 | vnsize, | |
1186 | 4); | |
1187 | ||
1188 | vnsec->add_output_section_data(vndata); | |
1189 | vnsec->set_link_section(dynstr); | |
1190 | vnsec->set_info(vnentries); | |
1191 | ||
1192 | odyn->add_section_address(elfcpp::DT_VERNEED, vnsec); | |
1193 | odyn->add_constant(elfcpp::DT_VERNEEDNUM, vnentries); | |
1194 | } | |
1195 | } | |
1196 | ||
dbe717ef ILT |
1197 | // Create the .interp section and PT_INTERP segment. |
1198 | ||
1199 | void | |
1200 | Layout::create_interp(const Target* target) | |
1201 | { | |
1202 | const char* interp = this->options_.dynamic_linker(); | |
1203 | if (interp == NULL) | |
1204 | { | |
1205 | interp = target->dynamic_linker(); | |
a3ad94ed | 1206 | gold_assert(interp != NULL); |
dbe717ef ILT |
1207 | } |
1208 | ||
1209 | size_t len = strlen(interp) + 1; | |
1210 | ||
1211 | Output_section_data* odata = new Output_data_const(interp, len, 1); | |
1212 | ||
1213 | const char* interp_name = this->namepool_.add(".interp", NULL); | |
1214 | Output_section* osec = this->make_output_section(interp_name, | |
1215 | elfcpp::SHT_PROGBITS, | |
1216 | elfcpp::SHF_ALLOC); | |
1217 | osec->add_output_section_data(odata); | |
1218 | ||
1219 | Output_segment* oseg = new Output_segment(elfcpp::PT_INTERP, elfcpp::PF_R); | |
1220 | this->segment_list_.push_back(oseg); | |
1221 | oseg->add_initial_output_section(osec, elfcpp::PF_R); | |
1222 | } | |
1223 | ||
a3ad94ed ILT |
1224 | // Finish the .dynamic section and PT_DYNAMIC segment. |
1225 | ||
1226 | void | |
1227 | Layout::finish_dynamic_section(const Input_objects* input_objects, | |
16649710 | 1228 | const Symbol_table* symtab) |
a3ad94ed | 1229 | { |
a3ad94ed ILT |
1230 | Output_segment* oseg = new Output_segment(elfcpp::PT_DYNAMIC, |
1231 | elfcpp::PF_R | elfcpp::PF_W); | |
1232 | this->segment_list_.push_back(oseg); | |
1233 | oseg->add_initial_output_section(this->dynamic_section_, | |
1234 | elfcpp::PF_R | elfcpp::PF_W); | |
1235 | ||
16649710 ILT |
1236 | Output_data_dynamic* const odyn = this->dynamic_data_; |
1237 | ||
a3ad94ed ILT |
1238 | for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin(); |
1239 | p != input_objects->dynobj_end(); | |
1240 | ++p) | |
1241 | { | |
1242 | // FIXME: Handle --as-needed. | |
1243 | odyn->add_string(elfcpp::DT_NEEDED, (*p)->soname()); | |
1244 | } | |
1245 | ||
1246 | // FIXME: Support --init and --fini. | |
1247 | Symbol* sym = symtab->lookup("_init"); | |
14b31740 | 1248 | if (sym != NULL && sym->is_defined() && !sym->is_from_dynobj()) |
a3ad94ed ILT |
1249 | odyn->add_symbol(elfcpp::DT_INIT, sym); |
1250 | ||
1251 | sym = symtab->lookup("_fini"); | |
14b31740 | 1252 | if (sym != NULL && sym->is_defined() && !sym->is_from_dynobj()) |
a3ad94ed ILT |
1253 | odyn->add_symbol(elfcpp::DT_FINI, sym); |
1254 | ||
1255 | // FIXME: Support DT_INIT_ARRAY and DT_FINI_ARRAY. | |
41f542e7 ILT |
1256 | |
1257 | // Add a DT_RPATH entry if needed. | |
1258 | const General_options::Dir_list& rpath(this->options_.rpath()); | |
1259 | if (!rpath.empty()) | |
1260 | { | |
1261 | std::string rpath_val; | |
1262 | for (General_options::Dir_list::const_iterator p = rpath.begin(); | |
1263 | p != rpath.end(); | |
1264 | ++p) | |
1265 | { | |
1266 | if (rpath_val.empty()) | |
1267 | rpath_val = *p; | |
1268 | else | |
1269 | { | |
1270 | // Eliminate duplicates. | |
1271 | General_options::Dir_list::const_iterator q; | |
1272 | for (q = rpath.begin(); q != p; ++q) | |
1273 | if (strcmp(*q, *p) == 0) | |
1274 | break; | |
1275 | if (q == p) | |
1276 | { | |
1277 | rpath_val += ':'; | |
1278 | rpath_val += *p; | |
1279 | } | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | odyn->add_string(elfcpp::DT_RPATH, rpath_val); | |
1284 | } | |
a3ad94ed ILT |
1285 | } |
1286 | ||
a2fb1b05 ILT |
1287 | // The mapping of .gnu.linkonce section names to real section names. |
1288 | ||
ead1e424 | 1289 | #define MAPPING_INIT(f, t) { f, sizeof(f) - 1, t, sizeof(t) - 1 } |
a2fb1b05 ILT |
1290 | const Layout::Linkonce_mapping Layout::linkonce_mapping[] = |
1291 | { | |
1292 | MAPPING_INIT("d.rel.ro", ".data.rel.ro"), // Must be before "d". | |
1293 | MAPPING_INIT("t", ".text"), | |
1294 | MAPPING_INIT("r", ".rodata"), | |
1295 | MAPPING_INIT("d", ".data"), | |
1296 | MAPPING_INIT("b", ".bss"), | |
1297 | MAPPING_INIT("s", ".sdata"), | |
1298 | MAPPING_INIT("sb", ".sbss"), | |
1299 | MAPPING_INIT("s2", ".sdata2"), | |
1300 | MAPPING_INIT("sb2", ".sbss2"), | |
1301 | MAPPING_INIT("wi", ".debug_info"), | |
1302 | MAPPING_INIT("td", ".tdata"), | |
1303 | MAPPING_INIT("tb", ".tbss"), | |
1304 | MAPPING_INIT("lr", ".lrodata"), | |
1305 | MAPPING_INIT("l", ".ldata"), | |
1306 | MAPPING_INIT("lb", ".lbss"), | |
1307 | }; | |
1308 | #undef MAPPING_INIT | |
1309 | ||
1310 | const int Layout::linkonce_mapping_count = | |
1311 | sizeof(Layout::linkonce_mapping) / sizeof(Layout::linkonce_mapping[0]); | |
1312 | ||
1313 | // Return the name of the output section to use for a .gnu.linkonce | |
1314 | // section. This is based on the default ELF linker script of the old | |
1315 | // GNU linker. For example, we map a name like ".gnu.linkonce.t.foo" | |
ead1e424 ILT |
1316 | // to ".text". Set *PLEN to the length of the name. *PLEN is |
1317 | // initialized to the length of NAME. | |
a2fb1b05 ILT |
1318 | |
1319 | const char* | |
ead1e424 | 1320 | Layout::linkonce_output_name(const char* name, size_t *plen) |
a2fb1b05 ILT |
1321 | { |
1322 | const char* s = name + sizeof(".gnu.linkonce") - 1; | |
1323 | if (*s != '.') | |
1324 | return name; | |
1325 | ++s; | |
1326 | const Linkonce_mapping* plm = linkonce_mapping; | |
1327 | for (int i = 0; i < linkonce_mapping_count; ++i, ++plm) | |
1328 | { | |
1329 | if (strncmp(s, plm->from, plm->fromlen) == 0 && s[plm->fromlen] == '.') | |
ead1e424 ILT |
1330 | { |
1331 | *plen = plm->tolen; | |
1332 | return plm->to; | |
1333 | } | |
a2fb1b05 ILT |
1334 | } |
1335 | return name; | |
1336 | } | |
1337 | ||
ead1e424 ILT |
1338 | // Choose the output section name to use given an input section name. |
1339 | // Set *PLEN to the length of the name. *PLEN is initialized to the | |
1340 | // length of NAME. | |
1341 | ||
1342 | const char* | |
1343 | Layout::output_section_name(const char* name, size_t* plen) | |
1344 | { | |
1345 | if (Layout::is_linkonce(name)) | |
1346 | { | |
1347 | // .gnu.linkonce sections are laid out as though they were named | |
1348 | // for the sections are placed into. | |
1349 | return Layout::linkonce_output_name(name, plen); | |
1350 | } | |
1351 | ||
1352 | // If the section name has no '.', or only an initial '.', we use | |
1353 | // the name unchanged (i.e., ".text" is unchanged). | |
1354 | ||
1355 | // Otherwise, if the section name does not include ".rel", we drop | |
1356 | // the last '.' and everything that follows (i.e., ".text.XXX" | |
1357 | // becomes ".text"). | |
1358 | ||
1359 | // Otherwise, if the section name has zero or one '.' after the | |
1360 | // ".rel", we use the name unchanged (i.e., ".rel.text" is | |
1361 | // unchanged). | |
1362 | ||
1363 | // Otherwise, we drop the last '.' and everything that follows | |
1364 | // (i.e., ".rel.text.XXX" becomes ".rel.text"). | |
1365 | ||
1366 | const char* s = name; | |
1367 | if (*s == '.') | |
1368 | ++s; | |
1369 | const char* sdot = strchr(s, '.'); | |
1370 | if (sdot == NULL) | |
1371 | return name; | |
1372 | ||
1373 | const char* srel = strstr(s, ".rel"); | |
1374 | if (srel == NULL) | |
1375 | { | |
1376 | *plen = sdot - name; | |
1377 | return name; | |
1378 | } | |
1379 | ||
1380 | sdot = strchr(srel + 1, '.'); | |
1381 | if (sdot == NULL) | |
1382 | return name; | |
1383 | sdot = strchr(sdot + 1, '.'); | |
1384 | if (sdot == NULL) | |
1385 | return name; | |
1386 | ||
1387 | *plen = sdot - name; | |
1388 | return name; | |
1389 | } | |
1390 | ||
a2fb1b05 ILT |
1391 | // Record the signature of a comdat section, and return whether to |
1392 | // include it in the link. If GROUP is true, this is a regular | |
1393 | // section group. If GROUP is false, this is a group signature | |
1394 | // derived from the name of a linkonce section. We want linkonce | |
1395 | // signatures and group signatures to block each other, but we don't | |
1396 | // want a linkonce signature to block another linkonce signature. | |
1397 | ||
1398 | bool | |
1399 | Layout::add_comdat(const char* signature, bool group) | |
1400 | { | |
1401 | std::string sig(signature); | |
1402 | std::pair<Signatures::iterator, bool> ins( | |
ead1e424 | 1403 | this->signatures_.insert(std::make_pair(sig, group))); |
a2fb1b05 ILT |
1404 | |
1405 | if (ins.second) | |
1406 | { | |
1407 | // This is the first time we've seen this signature. | |
1408 | return true; | |
1409 | } | |
1410 | ||
1411 | if (ins.first->second) | |
1412 | { | |
1413 | // We've already seen a real section group with this signature. | |
1414 | return false; | |
1415 | } | |
1416 | else if (group) | |
1417 | { | |
1418 | // This is a real section group, and we've already seen a | |
a0fa0c07 | 1419 | // linkonce section with this signature. Record that we've seen |
a2fb1b05 ILT |
1420 | // a section group, and don't include this section group. |
1421 | ins.first->second = true; | |
1422 | return false; | |
1423 | } | |
1424 | else | |
1425 | { | |
1426 | // We've already seen a linkonce section and this is a linkonce | |
1427 | // section. These don't block each other--this may be the same | |
1428 | // symbol name with different section types. | |
1429 | return true; | |
1430 | } | |
1431 | } | |
1432 | ||
61ba1cf9 ILT |
1433 | // Write out data not associated with a section or the symbol table. |
1434 | ||
1435 | void | |
a3ad94ed ILT |
1436 | Layout::write_data(const Symbol_table* symtab, const Target* target, |
1437 | Output_file* of) const | |
61ba1cf9 | 1438 | { |
a3ad94ed ILT |
1439 | const Output_section* symtab_section = this->symtab_section_; |
1440 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
1441 | p != this->section_list_.end(); | |
1442 | ++p) | |
1443 | { | |
1444 | if ((*p)->needs_symtab_index()) | |
1445 | { | |
1446 | gold_assert(symtab_section != NULL); | |
1447 | unsigned int index = (*p)->symtab_index(); | |
1448 | gold_assert(index > 0 && index != -1U); | |
1449 | off_t off = (symtab_section->offset() | |
1450 | + index * symtab_section->entsize()); | |
1451 | symtab->write_section_symbol(target, *p, of, off); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | const Output_section* dynsym_section = this->dynsym_section_; | |
1456 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
1457 | p != this->section_list_.end(); | |
1458 | ++p) | |
1459 | { | |
1460 | if ((*p)->needs_dynsym_index()) | |
1461 | { | |
1462 | gold_assert(dynsym_section != NULL); | |
1463 | unsigned int index = (*p)->dynsym_index(); | |
1464 | gold_assert(index > 0 && index != -1U); | |
1465 | off_t off = (dynsym_section->offset() | |
1466 | + index * dynsym_section->entsize()); | |
1467 | symtab->write_section_symbol(target, *p, of, off); | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | // Write out the Output_sections. Most won't have anything to | |
1472 | // write, since most of the data will come from input sections which | |
1473 | // are handled elsewhere. But some Output_sections do have | |
1474 | // Output_data. | |
1475 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
1476 | p != this->section_list_.end(); | |
1477 | ++p) | |
1478 | (*p)->write(of); | |
1479 | ||
1480 | // Write out the Output_data which are not in an Output_section. | |
61ba1cf9 ILT |
1481 | for (Data_list::const_iterator p = this->special_output_list_.begin(); |
1482 | p != this->special_output_list_.end(); | |
1483 | ++p) | |
1484 | (*p)->write(of); | |
1485 | } | |
1486 | ||
1487 | // Write_data_task methods. | |
1488 | ||
1489 | // We can always run this task. | |
1490 | ||
1491 | Task::Is_runnable_type | |
1492 | Write_data_task::is_runnable(Workqueue*) | |
1493 | { | |
1494 | return IS_RUNNABLE; | |
1495 | } | |
1496 | ||
1497 | // We need to unlock FINAL_BLOCKER when finished. | |
1498 | ||
1499 | Task_locker* | |
1500 | Write_data_task::locks(Workqueue* workqueue) | |
1501 | { | |
1502 | return new Task_locker_block(*this->final_blocker_, workqueue); | |
1503 | } | |
1504 | ||
1505 | // Run the task--write out the data. | |
1506 | ||
1507 | void | |
1508 | Write_data_task::run(Workqueue*) | |
1509 | { | |
a3ad94ed | 1510 | this->layout_->write_data(this->symtab_, this->target_, this->of_); |
61ba1cf9 ILT |
1511 | } |
1512 | ||
1513 | // Write_symbols_task methods. | |
1514 | ||
1515 | // We can always run this task. | |
1516 | ||
1517 | Task::Is_runnable_type | |
1518 | Write_symbols_task::is_runnable(Workqueue*) | |
1519 | { | |
1520 | return IS_RUNNABLE; | |
1521 | } | |
1522 | ||
1523 | // We need to unlock FINAL_BLOCKER when finished. | |
1524 | ||
1525 | Task_locker* | |
1526 | Write_symbols_task::locks(Workqueue* workqueue) | |
1527 | { | |
1528 | return new Task_locker_block(*this->final_blocker_, workqueue); | |
1529 | } | |
1530 | ||
1531 | // Run the task--write out the symbols. | |
1532 | ||
1533 | void | |
1534 | Write_symbols_task::run(Workqueue*) | |
1535 | { | |
16649710 ILT |
1536 | this->symtab_->write_globals(this->target_, this->sympool_, this->dynpool_, |
1537 | this->of_); | |
61ba1cf9 ILT |
1538 | } |
1539 | ||
92e059d8 | 1540 | // Close_task_runner methods. |
61ba1cf9 ILT |
1541 | |
1542 | // Run the task--close the file. | |
1543 | ||
1544 | void | |
92e059d8 | 1545 | Close_task_runner::run(Workqueue*) |
61ba1cf9 ILT |
1546 | { |
1547 | this->of_->close(); | |
1548 | } | |
1549 | ||
a2fb1b05 ILT |
1550 | // Instantiate the templates we need. We could use the configure |
1551 | // script to restrict this to only the ones for implemented targets. | |
1552 | ||
193a53d9 | 1553 | #ifdef HAVE_TARGET_32_LITTLE |
a2fb1b05 ILT |
1554 | template |
1555 | Output_section* | |
f6ce93d6 | 1556 | Layout::layout<32, false>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1557 | const elfcpp::Shdr<32, false>& shdr, off_t*); |
193a53d9 | 1558 | #endif |
a2fb1b05 | 1559 | |
193a53d9 | 1560 | #ifdef HAVE_TARGET_32_BIG |
a2fb1b05 ILT |
1561 | template |
1562 | Output_section* | |
f6ce93d6 | 1563 | Layout::layout<32, true>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1564 | const elfcpp::Shdr<32, true>& shdr, off_t*); |
193a53d9 | 1565 | #endif |
a2fb1b05 | 1566 | |
193a53d9 | 1567 | #ifdef HAVE_TARGET_64_LITTLE |
a2fb1b05 ILT |
1568 | template |
1569 | Output_section* | |
f6ce93d6 | 1570 | Layout::layout<64, false>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1571 | const elfcpp::Shdr<64, false>& shdr, off_t*); |
193a53d9 | 1572 | #endif |
a2fb1b05 | 1573 | |
193a53d9 | 1574 | #ifdef HAVE_TARGET_64_BIG |
a2fb1b05 ILT |
1575 | template |
1576 | Output_section* | |
f6ce93d6 | 1577 | Layout::layout<64, true>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1578 | const elfcpp::Shdr<64, true>& shdr, off_t*); |
193a53d9 | 1579 | #endif |
a2fb1b05 ILT |
1580 | |
1581 | ||
1582 | } // End namespace gold. |