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a2fb1b05 ILT |
1 | // layout.cc -- lay out output file sections for gold |
2 | ||
3 | #include "gold.h" | |
4 | ||
a2fb1b05 | 5 | #include <cstring> |
54dc6425 | 6 | #include <algorithm> |
a2fb1b05 ILT |
7 | #include <iostream> |
8 | #include <utility> | |
9 | ||
7e1edb90 | 10 | #include "parameters.h" |
a2fb1b05 | 11 | #include "output.h" |
f6ce93d6 | 12 | #include "symtab.h" |
a3ad94ed | 13 | #include "dynobj.h" |
a2fb1b05 ILT |
14 | #include "layout.h" |
15 | ||
16 | namespace gold | |
17 | { | |
18 | ||
92e059d8 | 19 | // Layout_task_runner methods. |
a2fb1b05 ILT |
20 | |
21 | // Lay out the sections. This is called after all the input objects | |
22 | // have been read. | |
23 | ||
24 | void | |
92e059d8 | 25 | Layout_task_runner::run(Workqueue* workqueue) |
a2fb1b05 | 26 | { |
12e14209 ILT |
27 | off_t file_size = this->layout_->finalize(this->input_objects_, |
28 | this->symtab_); | |
61ba1cf9 ILT |
29 | |
30 | // Now we know the final size of the output file and we know where | |
31 | // each piece of information goes. | |
c51e6221 ILT |
32 | Output_file* of = new Output_file(this->options_, |
33 | this->input_objects_->target()); | |
61ba1cf9 ILT |
34 | of->open(file_size); |
35 | ||
36 | // Queue up the final set of tasks. | |
37 | gold::queue_final_tasks(this->options_, this->input_objects_, | |
12e14209 | 38 | this->symtab_, this->layout_, workqueue, of); |
a2fb1b05 ILT |
39 | } |
40 | ||
41 | // Layout methods. | |
42 | ||
54dc6425 | 43 | Layout::Layout(const General_options& options) |
a3ad94ed | 44 | : options_(options), namepool_(), sympool_(), dynpool_(), signatures_(), |
61ba1cf9 | 45 | section_name_map_(), segment_list_(), section_list_(), |
a3ad94ed | 46 | unattached_section_list_(), special_output_list_(), |
14b31740 ILT |
47 | tls_segment_(NULL), symtab_section_(NULL), |
48 | dynsym_section_(NULL), dynamic_section_(NULL), dynamic_data_(NULL) | |
54dc6425 ILT |
49 | { |
50 | // Make space for more than enough segments for a typical file. | |
51 | // This is just for efficiency--it's OK if we wind up needing more. | |
a3ad94ed ILT |
52 | this->segment_list_.reserve(12); |
53 | ||
54 | // We expect three unattached Output_data objects: the file header, | |
55 | // the segment headers, and the section headers. | |
56 | this->special_output_list_.reserve(3); | |
54dc6425 ILT |
57 | } |
58 | ||
a2fb1b05 ILT |
59 | // Hash a key we use to look up an output section mapping. |
60 | ||
61 | size_t | |
62 | Layout::Hash_key::operator()(const Layout::Key& k) const | |
63 | { | |
f0641a0b | 64 | return k.first + k.second.first + k.second.second; |
a2fb1b05 ILT |
65 | } |
66 | ||
67 | // Whether to include this section in the link. | |
68 | ||
69 | template<int size, bool big_endian> | |
70 | bool | |
71 | Layout::include_section(Object*, const char*, | |
72 | const elfcpp::Shdr<size, big_endian>& shdr) | |
73 | { | |
74 | // Some section types are never linked. Some are only linked when | |
75 | // doing a relocateable link. | |
76 | switch (shdr.get_sh_type()) | |
77 | { | |
78 | case elfcpp::SHT_NULL: | |
79 | case elfcpp::SHT_SYMTAB: | |
80 | case elfcpp::SHT_DYNSYM: | |
81 | case elfcpp::SHT_STRTAB: | |
82 | case elfcpp::SHT_HASH: | |
83 | case elfcpp::SHT_DYNAMIC: | |
84 | case elfcpp::SHT_SYMTAB_SHNDX: | |
85 | return false; | |
86 | ||
87 | case elfcpp::SHT_RELA: | |
88 | case elfcpp::SHT_REL: | |
89 | case elfcpp::SHT_GROUP: | |
7e1edb90 | 90 | return parameters->output_is_object(); |
a2fb1b05 ILT |
91 | |
92 | default: | |
93 | // FIXME: Handle stripping debug sections here. | |
94 | return true; | |
95 | } | |
96 | } | |
97 | ||
ead1e424 | 98 | // Return an output section named NAME, or NULL if there is none. |
a2fb1b05 | 99 | |
a2fb1b05 | 100 | Output_section* |
ead1e424 | 101 | Layout::find_output_section(const char* name) const |
a2fb1b05 | 102 | { |
ead1e424 ILT |
103 | for (Section_name_map::const_iterator p = this->section_name_map_.begin(); |
104 | p != this->section_name_map_.end(); | |
105 | ++p) | |
f0641a0b | 106 | if (strcmp(p->second->name(), name) == 0) |
ead1e424 ILT |
107 | return p->second; |
108 | return NULL; | |
109 | } | |
a2fb1b05 | 110 | |
ead1e424 ILT |
111 | // Return an output segment of type TYPE, with segment flags SET set |
112 | // and segment flags CLEAR clear. Return NULL if there is none. | |
a2fb1b05 | 113 | |
ead1e424 ILT |
114 | Output_segment* |
115 | Layout::find_output_segment(elfcpp::PT type, elfcpp::Elf_Word set, | |
116 | elfcpp::Elf_Word clear) const | |
117 | { | |
118 | for (Segment_list::const_iterator p = this->segment_list_.begin(); | |
119 | p != this->segment_list_.end(); | |
120 | ++p) | |
121 | if (static_cast<elfcpp::PT>((*p)->type()) == type | |
122 | && ((*p)->flags() & set) == set | |
123 | && ((*p)->flags() & clear) == 0) | |
124 | return *p; | |
125 | return NULL; | |
126 | } | |
a2fb1b05 | 127 | |
ead1e424 ILT |
128 | // Return the output section to use for section NAME with type TYPE |
129 | // and section flags FLAGS. | |
a2fb1b05 | 130 | |
ead1e424 | 131 | Output_section* |
f0641a0b ILT |
132 | Layout::get_output_section(const char* name, Stringpool::Key name_key, |
133 | elfcpp::Elf_Word type, elfcpp::Elf_Xword flags) | |
ead1e424 ILT |
134 | { |
135 | // We should ignore some flags. | |
136 | flags &= ~ (elfcpp::SHF_INFO_LINK | |
137 | | elfcpp::SHF_LINK_ORDER | |
b8e6aad9 ILT |
138 | | elfcpp::SHF_GROUP |
139 | | elfcpp::SHF_MERGE | |
140 | | elfcpp::SHF_STRINGS); | |
a2fb1b05 | 141 | |
f0641a0b | 142 | const Key key(name_key, std::make_pair(type, flags)); |
a2fb1b05 ILT |
143 | const std::pair<Key, Output_section*> v(key, NULL); |
144 | std::pair<Section_name_map::iterator, bool> ins( | |
145 | this->section_name_map_.insert(v)); | |
146 | ||
a2fb1b05 | 147 | if (!ins.second) |
ead1e424 | 148 | return ins.first->second; |
a2fb1b05 ILT |
149 | else |
150 | { | |
151 | // This is the first time we've seen this name/type/flags | |
152 | // combination. | |
ead1e424 | 153 | Output_section* os = this->make_output_section(name, type, flags); |
a2fb1b05 | 154 | ins.first->second = os; |
ead1e424 | 155 | return os; |
a2fb1b05 | 156 | } |
ead1e424 ILT |
157 | } |
158 | ||
159 | // Return the output section to use for input section SHNDX, with name | |
160 | // NAME, with header HEADER, from object OBJECT. Set *OFF to the | |
161 | // offset of this input section without the output section. | |
162 | ||
163 | template<int size, bool big_endian> | |
164 | Output_section* | |
f6ce93d6 | 165 | Layout::layout(Relobj* object, unsigned int shndx, const char* name, |
ead1e424 ILT |
166 | const elfcpp::Shdr<size, big_endian>& shdr, off_t* off) |
167 | { | |
168 | if (!this->include_section(object, name, shdr)) | |
169 | return NULL; | |
170 | ||
171 | // If we are not doing a relocateable link, choose the name to use | |
172 | // for the output section. | |
173 | size_t len = strlen(name); | |
7e1edb90 | 174 | if (!parameters->output_is_object()) |
ead1e424 ILT |
175 | name = Layout::output_section_name(name, &len); |
176 | ||
177 | // FIXME: Handle SHF_OS_NONCONFORMING here. | |
178 | ||
179 | // Canonicalize the section name. | |
f0641a0b ILT |
180 | Stringpool::Key name_key; |
181 | name = this->namepool_.add(name, len, &name_key); | |
ead1e424 ILT |
182 | |
183 | // Find the output section. The output section is selected based on | |
184 | // the section name, type, and flags. | |
f0641a0b ILT |
185 | Output_section* os = this->get_output_section(name, name_key, |
186 | shdr.get_sh_type(), | |
ead1e424 | 187 | shdr.get_sh_flags()); |
a2fb1b05 ILT |
188 | |
189 | // FIXME: Handle SHF_LINK_ORDER somewhere. | |
190 | ||
ead1e424 | 191 | *off = os->add_input_section(object, shndx, name, shdr); |
a2fb1b05 ILT |
192 | |
193 | return os; | |
194 | } | |
195 | ||
ead1e424 ILT |
196 | // Add POSD to an output section using NAME, TYPE, and FLAGS. |
197 | ||
198 | void | |
199 | Layout::add_output_section_data(const char* name, elfcpp::Elf_Word type, | |
200 | elfcpp::Elf_Xword flags, | |
201 | Output_section_data* posd) | |
202 | { | |
203 | // Canonicalize the name. | |
f0641a0b ILT |
204 | Stringpool::Key name_key; |
205 | name = this->namepool_.add(name, &name_key); | |
ead1e424 | 206 | |
f0641a0b | 207 | Output_section* os = this->get_output_section(name, name_key, type, flags); |
ead1e424 ILT |
208 | os->add_output_section_data(posd); |
209 | } | |
210 | ||
a2fb1b05 ILT |
211 | // Map section flags to segment flags. |
212 | ||
213 | elfcpp::Elf_Word | |
214 | Layout::section_flags_to_segment(elfcpp::Elf_Xword flags) | |
215 | { | |
216 | elfcpp::Elf_Word ret = elfcpp::PF_R; | |
217 | if ((flags & elfcpp::SHF_WRITE) != 0) | |
218 | ret |= elfcpp::PF_W; | |
219 | if ((flags & elfcpp::SHF_EXECINSTR) != 0) | |
220 | ret |= elfcpp::PF_X; | |
221 | return ret; | |
222 | } | |
223 | ||
224 | // Make a new Output_section, and attach it to segments as | |
225 | // appropriate. | |
226 | ||
227 | Output_section* | |
228 | Layout::make_output_section(const char* name, elfcpp::Elf_Word type, | |
229 | elfcpp::Elf_Xword flags) | |
230 | { | |
b8e6aad9 | 231 | Output_section* os = new Output_section(name, type, flags); |
a3ad94ed | 232 | this->section_list_.push_back(os); |
a2fb1b05 ILT |
233 | |
234 | if ((flags & elfcpp::SHF_ALLOC) == 0) | |
a3ad94ed | 235 | this->unattached_section_list_.push_back(os); |
a2fb1b05 ILT |
236 | else |
237 | { | |
238 | // This output section goes into a PT_LOAD segment. | |
239 | ||
240 | elfcpp::Elf_Word seg_flags = Layout::section_flags_to_segment(flags); | |
241 | ||
242 | // The only thing we really care about for PT_LOAD segments is | |
243 | // whether or not they are writable, so that is how we search | |
244 | // for them. People who need segments sorted on some other | |
245 | // basis will have to wait until we implement a mechanism for | |
246 | // them to describe the segments they want. | |
247 | ||
248 | Segment_list::const_iterator p; | |
249 | for (p = this->segment_list_.begin(); | |
250 | p != this->segment_list_.end(); | |
251 | ++p) | |
252 | { | |
253 | if ((*p)->type() == elfcpp::PT_LOAD | |
254 | && ((*p)->flags() & elfcpp::PF_W) == (seg_flags & elfcpp::PF_W)) | |
255 | { | |
75f65a3e | 256 | (*p)->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
257 | break; |
258 | } | |
259 | } | |
260 | ||
261 | if (p == this->segment_list_.end()) | |
262 | { | |
263 | Output_segment* oseg = new Output_segment(elfcpp::PT_LOAD, | |
264 | seg_flags); | |
265 | this->segment_list_.push_back(oseg); | |
75f65a3e | 266 | oseg->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
267 | } |
268 | ||
269 | // If we see a loadable SHT_NOTE section, we create a PT_NOTE | |
270 | // segment. | |
271 | if (type == elfcpp::SHT_NOTE) | |
272 | { | |
273 | // See if we already have an equivalent PT_NOTE segment. | |
274 | for (p = this->segment_list_.begin(); | |
275 | p != segment_list_.end(); | |
276 | ++p) | |
277 | { | |
278 | if ((*p)->type() == elfcpp::PT_NOTE | |
279 | && (((*p)->flags() & elfcpp::PF_W) | |
280 | == (seg_flags & elfcpp::PF_W))) | |
281 | { | |
75f65a3e | 282 | (*p)->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
283 | break; |
284 | } | |
285 | } | |
286 | ||
287 | if (p == this->segment_list_.end()) | |
288 | { | |
289 | Output_segment* oseg = new Output_segment(elfcpp::PT_NOTE, | |
290 | seg_flags); | |
291 | this->segment_list_.push_back(oseg); | |
75f65a3e | 292 | oseg->add_output_section(os, seg_flags); |
a2fb1b05 ILT |
293 | } |
294 | } | |
54dc6425 ILT |
295 | |
296 | // If we see a loadable SHF_TLS section, we create a PT_TLS | |
92e059d8 | 297 | // segment. There can only be one such segment. |
54dc6425 ILT |
298 | if ((flags & elfcpp::SHF_TLS) != 0) |
299 | { | |
92e059d8 | 300 | if (this->tls_segment_ == NULL) |
54dc6425 | 301 | { |
92e059d8 ILT |
302 | this->tls_segment_ = new Output_segment(elfcpp::PT_TLS, |
303 | seg_flags); | |
304 | this->segment_list_.push_back(this->tls_segment_); | |
54dc6425 | 305 | } |
92e059d8 | 306 | this->tls_segment_->add_output_section(os, seg_flags); |
54dc6425 | 307 | } |
a2fb1b05 ILT |
308 | } |
309 | ||
310 | return os; | |
311 | } | |
312 | ||
a3ad94ed ILT |
313 | // Create the dynamic sections which are needed before we read the |
314 | // relocs. | |
315 | ||
316 | void | |
317 | Layout::create_initial_dynamic_sections(const Input_objects* input_objects, | |
318 | Symbol_table* symtab) | |
319 | { | |
320 | if (!input_objects->any_dynamic()) | |
321 | return; | |
322 | ||
323 | const char* dynamic_name = this->namepool_.add(".dynamic", NULL); | |
324 | this->dynamic_section_ = this->make_output_section(dynamic_name, | |
325 | elfcpp::SHT_DYNAMIC, | |
326 | (elfcpp::SHF_ALLOC | |
327 | | elfcpp::SHF_WRITE)); | |
328 | ||
14b31740 | 329 | symtab->define_in_output_data(input_objects->target(), "_DYNAMIC", NULL, |
a3ad94ed ILT |
330 | this->dynamic_section_, 0, 0, |
331 | elfcpp::STT_OBJECT, elfcpp::STB_LOCAL, | |
332 | elfcpp::STV_HIDDEN, 0, false, false); | |
16649710 ILT |
333 | |
334 | this->dynamic_data_ = new Output_data_dynamic(input_objects->target(), | |
335 | &this->dynpool_); | |
336 | ||
337 | this->dynamic_section_->add_output_section_data(this->dynamic_data_); | |
a3ad94ed ILT |
338 | } |
339 | ||
bfd58944 ILT |
340 | // For each output section whose name can be represented as C symbol, |
341 | // define __start and __stop symbols for the section. This is a GNU | |
342 | // extension. | |
343 | ||
344 | void | |
345 | Layout::define_section_symbols(Symbol_table* symtab, const Target* target) | |
346 | { | |
347 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
348 | p != this->section_list_.end(); | |
349 | ++p) | |
350 | { | |
351 | const char* const name = (*p)->name(); | |
352 | if (name[strspn(name, | |
353 | ("0123456789" | |
354 | "ABCDEFGHIJKLMNOPWRSTUVWXYZ" | |
355 | "abcdefghijklmnopqrstuvwxyz" | |
356 | "_"))] | |
357 | == '\0') | |
358 | { | |
359 | const std::string name_string(name); | |
360 | const std::string start_name("__start_" + name_string); | |
361 | const std::string stop_name("__stop_" + name_string); | |
362 | ||
363 | symtab->define_in_output_data(target, | |
364 | start_name.c_str(), | |
365 | NULL, // version | |
366 | *p, | |
367 | 0, // value | |
368 | 0, // symsize | |
369 | elfcpp::STT_NOTYPE, | |
370 | elfcpp::STB_GLOBAL, | |
371 | elfcpp::STV_DEFAULT, | |
372 | 0, // nonvis | |
373 | false, // offset_is_from_end | |
374 | false); // only_if_ref | |
375 | ||
376 | symtab->define_in_output_data(target, | |
377 | stop_name.c_str(), | |
378 | NULL, // version | |
379 | *p, | |
380 | 0, // value | |
381 | 0, // symsize | |
382 | elfcpp::STT_NOTYPE, | |
383 | elfcpp::STB_GLOBAL, | |
384 | elfcpp::STV_DEFAULT, | |
385 | 0, // nonvis | |
386 | true, // offset_is_from_end | |
387 | false); // only_if_ref | |
388 | } | |
389 | } | |
390 | } | |
391 | ||
75f65a3e ILT |
392 | // Find the first read-only PT_LOAD segment, creating one if |
393 | // necessary. | |
54dc6425 | 394 | |
75f65a3e ILT |
395 | Output_segment* |
396 | Layout::find_first_load_seg() | |
54dc6425 | 397 | { |
75f65a3e ILT |
398 | for (Segment_list::const_iterator p = this->segment_list_.begin(); |
399 | p != this->segment_list_.end(); | |
400 | ++p) | |
401 | { | |
402 | if ((*p)->type() == elfcpp::PT_LOAD | |
403 | && ((*p)->flags() & elfcpp::PF_R) != 0 | |
404 | && ((*p)->flags() & elfcpp::PF_W) == 0) | |
405 | return *p; | |
406 | } | |
407 | ||
408 | Output_segment* load_seg = new Output_segment(elfcpp::PT_LOAD, elfcpp::PF_R); | |
409 | this->segment_list_.push_back(load_seg); | |
410 | return load_seg; | |
54dc6425 ILT |
411 | } |
412 | ||
413 | // Finalize the layout. When this is called, we have created all the | |
414 | // output sections and all the output segments which are based on | |
415 | // input sections. We have several things to do, and we have to do | |
416 | // them in the right order, so that we get the right results correctly | |
417 | // and efficiently. | |
418 | ||
419 | // 1) Finalize the list of output segments and create the segment | |
420 | // table header. | |
421 | ||
422 | // 2) Finalize the dynamic symbol table and associated sections. | |
423 | ||
424 | // 3) Determine the final file offset of all the output segments. | |
425 | ||
426 | // 4) Determine the final file offset of all the SHF_ALLOC output | |
427 | // sections. | |
428 | ||
75f65a3e ILT |
429 | // 5) Create the symbol table sections and the section name table |
430 | // section. | |
431 | ||
432 | // 6) Finalize the symbol table: set symbol values to their final | |
54dc6425 ILT |
433 | // value and make a final determination of which symbols are going |
434 | // into the output symbol table. | |
435 | ||
54dc6425 ILT |
436 | // 7) Create the section table header. |
437 | ||
438 | // 8) Determine the final file offset of all the output sections which | |
439 | // are not SHF_ALLOC, including the section table header. | |
440 | ||
441 | // 9) Finalize the ELF file header. | |
442 | ||
75f65a3e ILT |
443 | // This function returns the size of the output file. |
444 | ||
445 | off_t | |
446 | Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab) | |
54dc6425 | 447 | { |
5a6f7e2d | 448 | Target* const target = input_objects->target(); |
a3ad94ed | 449 | const int size = target->get_size(); |
dbe717ef | 450 | |
7e1edb90 | 451 | target->finalize_sections(this); |
5a6f7e2d | 452 | |
dbe717ef | 453 | Output_segment* phdr_seg = NULL; |
54dc6425 ILT |
454 | if (input_objects->any_dynamic()) |
455 | { | |
dbe717ef ILT |
456 | // There was a dynamic object in the link. We need to create |
457 | // some information for the dynamic linker. | |
458 | ||
459 | // Create the PT_PHDR segment which will hold the program | |
460 | // headers. | |
461 | phdr_seg = new Output_segment(elfcpp::PT_PHDR, elfcpp::PF_R); | |
462 | this->segment_list_.push_back(phdr_seg); | |
463 | ||
14b31740 ILT |
464 | // Create the dynamic symbol table, including the hash table. |
465 | Output_section* dynstr; | |
466 | std::vector<Symbol*> dynamic_symbols; | |
467 | unsigned int local_dynamic_count; | |
468 | Versions versions; | |
469 | this->create_dynamic_symtab(target, symtab, &dynstr, | |
470 | &local_dynamic_count, &dynamic_symbols, | |
471 | &versions); | |
dbe717ef ILT |
472 | |
473 | // Create the .interp section to hold the name of the | |
474 | // interpreter, and put it in a PT_INTERP segment. | |
a3ad94ed ILT |
475 | this->create_interp(target); |
476 | ||
477 | // Finish the .dynamic section to hold the dynamic data, and put | |
478 | // it in a PT_DYNAMIC segment. | |
16649710 | 479 | this->finish_dynamic_section(input_objects, symtab); |
14b31740 ILT |
480 | |
481 | // We should have added everything we need to the dynamic string | |
482 | // table. | |
483 | this->dynpool_.set_string_offsets(); | |
484 | ||
485 | // Create the version sections. We can't do this until the | |
486 | // dynamic string table is complete. | |
487 | this->create_version_sections(target, &versions, local_dynamic_count, | |
488 | dynamic_symbols, dynstr); | |
54dc6425 ILT |
489 | } |
490 | ||
491 | // FIXME: Handle PT_GNU_STACK. | |
492 | ||
75f65a3e ILT |
493 | Output_segment* load_seg = this->find_first_load_seg(); |
494 | ||
495 | // Lay out the segment headers. | |
a3ad94ed | 496 | bool big_endian = target->is_big_endian(); |
75f65a3e | 497 | Output_segment_headers* segment_headers; |
61ba1cf9 ILT |
498 | segment_headers = new Output_segment_headers(size, big_endian, |
499 | this->segment_list_); | |
75f65a3e | 500 | load_seg->add_initial_output_data(segment_headers); |
61ba1cf9 | 501 | this->special_output_list_.push_back(segment_headers); |
dbe717ef ILT |
502 | if (phdr_seg != NULL) |
503 | phdr_seg->add_initial_output_data(segment_headers); | |
75f65a3e ILT |
504 | |
505 | // Lay out the file header. | |
506 | Output_file_header* file_header; | |
507 | file_header = new Output_file_header(size, | |
61ba1cf9 | 508 | big_endian, |
a3ad94ed | 509 | target, |
75f65a3e ILT |
510 | symtab, |
511 | segment_headers); | |
512 | load_seg->add_initial_output_data(file_header); | |
61ba1cf9 | 513 | this->special_output_list_.push_back(file_header); |
75f65a3e | 514 | |
ead1e424 ILT |
515 | // We set the output section indexes in set_segment_offsets and |
516 | // set_section_offsets. | |
517 | unsigned int shndx = 1; | |
518 | ||
519 | // Set the file offsets of all the segments, and all the sections | |
520 | // they contain. | |
a3ad94ed | 521 | off_t off = this->set_segment_offsets(target, load_seg, &shndx); |
75f65a3e ILT |
522 | |
523 | // Create the symbol table sections. | |
16649710 | 524 | this->create_symtab_sections(size, input_objects, symtab, &off); |
75f65a3e ILT |
525 | |
526 | // Create the .shstrtab section. | |
527 | Output_section* shstrtab_section = this->create_shstrtab(); | |
528 | ||
529 | // Set the file offsets of all the sections not associated with | |
530 | // segments. | |
ead1e424 ILT |
531 | off = this->set_section_offsets(off, &shndx); |
532 | ||
75f65a3e | 533 | // Create the section table header. |
61ba1cf9 | 534 | Output_section_headers* oshdrs = this->create_shdrs(size, big_endian, &off); |
75f65a3e ILT |
535 | |
536 | file_header->set_section_info(oshdrs, shstrtab_section); | |
537 | ||
538 | // Now we know exactly where everything goes in the output file. | |
a3ad94ed | 539 | Output_data::layout_complete(); |
75f65a3e ILT |
540 | |
541 | return off; | |
542 | } | |
543 | ||
544 | // Return whether SEG1 should be before SEG2 in the output file. This | |
545 | // is based entirely on the segment type and flags. When this is | |
546 | // called the segment addresses has normally not yet been set. | |
547 | ||
548 | bool | |
549 | Layout::segment_precedes(const Output_segment* seg1, | |
550 | const Output_segment* seg2) | |
551 | { | |
552 | elfcpp::Elf_Word type1 = seg1->type(); | |
553 | elfcpp::Elf_Word type2 = seg2->type(); | |
554 | ||
555 | // The single PT_PHDR segment is required to precede any loadable | |
556 | // segment. We simply make it always first. | |
557 | if (type1 == elfcpp::PT_PHDR) | |
558 | { | |
a3ad94ed | 559 | gold_assert(type2 != elfcpp::PT_PHDR); |
75f65a3e ILT |
560 | return true; |
561 | } | |
562 | if (type2 == elfcpp::PT_PHDR) | |
563 | return false; | |
564 | ||
565 | // The single PT_INTERP segment is required to precede any loadable | |
566 | // segment. We simply make it always second. | |
567 | if (type1 == elfcpp::PT_INTERP) | |
568 | { | |
a3ad94ed | 569 | gold_assert(type2 != elfcpp::PT_INTERP); |
75f65a3e ILT |
570 | return true; |
571 | } | |
572 | if (type2 == elfcpp::PT_INTERP) | |
573 | return false; | |
574 | ||
575 | // We then put PT_LOAD segments before any other segments. | |
576 | if (type1 == elfcpp::PT_LOAD && type2 != elfcpp::PT_LOAD) | |
577 | return true; | |
578 | if (type2 == elfcpp::PT_LOAD && type1 != elfcpp::PT_LOAD) | |
579 | return false; | |
580 | ||
92e059d8 ILT |
581 | // We put the PT_TLS segment last, because that is where the dynamic |
582 | // linker expects to find it (this is just for efficiency; other | |
583 | // positions would also work correctly). | |
584 | if (type1 == elfcpp::PT_TLS && type2 != elfcpp::PT_TLS) | |
585 | return false; | |
586 | if (type2 == elfcpp::PT_TLS && type1 != elfcpp::PT_TLS) | |
587 | return true; | |
588 | ||
75f65a3e ILT |
589 | const elfcpp::Elf_Word flags1 = seg1->flags(); |
590 | const elfcpp::Elf_Word flags2 = seg2->flags(); | |
591 | ||
592 | // The order of non-PT_LOAD segments is unimportant. We simply sort | |
593 | // by the numeric segment type and flags values. There should not | |
594 | // be more than one segment with the same type and flags. | |
595 | if (type1 != elfcpp::PT_LOAD) | |
596 | { | |
597 | if (type1 != type2) | |
598 | return type1 < type2; | |
a3ad94ed | 599 | gold_assert(flags1 != flags2); |
75f65a3e ILT |
600 | return flags1 < flags2; |
601 | } | |
602 | ||
603 | // We sort PT_LOAD segments based on the flags. Readonly segments | |
604 | // come before writable segments. Then executable segments come | |
605 | // before non-executable segments. Then the unlikely case of a | |
606 | // non-readable segment comes before the normal case of a readable | |
607 | // segment. If there are multiple segments with the same type and | |
608 | // flags, we require that the address be set, and we sort by | |
609 | // virtual address and then physical address. | |
610 | if ((flags1 & elfcpp::PF_W) != (flags2 & elfcpp::PF_W)) | |
611 | return (flags1 & elfcpp::PF_W) == 0; | |
612 | if ((flags1 & elfcpp::PF_X) != (flags2 & elfcpp::PF_X)) | |
613 | return (flags1 & elfcpp::PF_X) != 0; | |
614 | if ((flags1 & elfcpp::PF_R) != (flags2 & elfcpp::PF_R)) | |
615 | return (flags1 & elfcpp::PF_R) == 0; | |
616 | ||
617 | uint64_t vaddr1 = seg1->vaddr(); | |
618 | uint64_t vaddr2 = seg2->vaddr(); | |
619 | if (vaddr1 != vaddr2) | |
620 | return vaddr1 < vaddr2; | |
621 | ||
622 | uint64_t paddr1 = seg1->paddr(); | |
623 | uint64_t paddr2 = seg2->paddr(); | |
a3ad94ed | 624 | gold_assert(paddr1 != paddr2); |
75f65a3e ILT |
625 | return paddr1 < paddr2; |
626 | } | |
627 | ||
ead1e424 ILT |
628 | // Set the file offsets of all the segments, and all the sections they |
629 | // contain. They have all been created. LOAD_SEG must be be laid out | |
630 | // first. Return the offset of the data to follow. | |
75f65a3e ILT |
631 | |
632 | off_t | |
ead1e424 ILT |
633 | Layout::set_segment_offsets(const Target* target, Output_segment* load_seg, |
634 | unsigned int *pshndx) | |
75f65a3e ILT |
635 | { |
636 | // Sort them into the final order. | |
54dc6425 ILT |
637 | std::sort(this->segment_list_.begin(), this->segment_list_.end(), |
638 | Layout::Compare_segments()); | |
639 | ||
75f65a3e ILT |
640 | // Find the PT_LOAD segments, and set their addresses and offsets |
641 | // and their section's addresses and offsets. | |
642 | uint64_t addr = target->text_segment_address(); | |
643 | off_t off = 0; | |
644 | bool was_readonly = false; | |
645 | for (Segment_list::iterator p = this->segment_list_.begin(); | |
646 | p != this->segment_list_.end(); | |
647 | ++p) | |
648 | { | |
649 | if ((*p)->type() == elfcpp::PT_LOAD) | |
650 | { | |
651 | if (load_seg != NULL && load_seg != *p) | |
a3ad94ed | 652 | gold_unreachable(); |
75f65a3e ILT |
653 | load_seg = NULL; |
654 | ||
655 | // If the last segment was readonly, and this one is not, | |
656 | // then skip the address forward one page, maintaining the | |
657 | // same position within the page. This lets us store both | |
658 | // segments overlapping on a single page in the file, but | |
659 | // the loader will put them on different pages in memory. | |
660 | ||
661 | uint64_t orig_addr = addr; | |
662 | uint64_t orig_off = off; | |
663 | ||
664 | uint64_t aligned_addr = addr; | |
665 | uint64_t abi_pagesize = target->abi_pagesize(); | |
0496d5e5 ILT |
666 | |
667 | // FIXME: This should depend on the -n and -N options. | |
668 | (*p)->set_minimum_addralign(target->common_pagesize()); | |
669 | ||
75f65a3e ILT |
670 | if (was_readonly && ((*p)->flags() & elfcpp::PF_W) != 0) |
671 | { | |
ead1e424 | 672 | uint64_t align = (*p)->addralign(); |
75f65a3e | 673 | |
ead1e424 | 674 | addr = align_address(addr, align); |
75f65a3e ILT |
675 | aligned_addr = addr; |
676 | if ((addr & (abi_pagesize - 1)) != 0) | |
677 | addr = addr + abi_pagesize; | |
678 | } | |
679 | ||
ead1e424 | 680 | unsigned int shndx_hold = *pshndx; |
75f65a3e | 681 | off = orig_off + ((addr - orig_addr) & (abi_pagesize - 1)); |
ead1e424 | 682 | uint64_t new_addr = (*p)->set_section_addresses(addr, &off, pshndx); |
75f65a3e ILT |
683 | |
684 | // Now that we know the size of this segment, we may be able | |
685 | // to save a page in memory, at the cost of wasting some | |
686 | // file space, by instead aligning to the start of a new | |
687 | // page. Here we use the real machine page size rather than | |
688 | // the ABI mandated page size. | |
689 | ||
690 | if (aligned_addr != addr) | |
691 | { | |
692 | uint64_t common_pagesize = target->common_pagesize(); | |
693 | uint64_t first_off = (common_pagesize | |
694 | - (aligned_addr | |
695 | & (common_pagesize - 1))); | |
696 | uint64_t last_off = new_addr & (common_pagesize - 1); | |
697 | if (first_off > 0 | |
698 | && last_off > 0 | |
699 | && ((aligned_addr & ~ (common_pagesize - 1)) | |
700 | != (new_addr & ~ (common_pagesize - 1))) | |
701 | && first_off + last_off <= common_pagesize) | |
702 | { | |
ead1e424 ILT |
703 | *pshndx = shndx_hold; |
704 | addr = align_address(aligned_addr, common_pagesize); | |
75f65a3e | 705 | off = orig_off + ((addr - orig_addr) & (abi_pagesize - 1)); |
ead1e424 | 706 | new_addr = (*p)->set_section_addresses(addr, &off, pshndx); |
75f65a3e ILT |
707 | } |
708 | } | |
709 | ||
710 | addr = new_addr; | |
711 | ||
712 | if (((*p)->flags() & elfcpp::PF_W) == 0) | |
713 | was_readonly = true; | |
714 | } | |
715 | } | |
716 | ||
717 | // Handle the non-PT_LOAD segments, setting their offsets from their | |
718 | // section's offsets. | |
719 | for (Segment_list::iterator p = this->segment_list_.begin(); | |
720 | p != this->segment_list_.end(); | |
721 | ++p) | |
722 | { | |
723 | if ((*p)->type() != elfcpp::PT_LOAD) | |
724 | (*p)->set_offset(); | |
725 | } | |
726 | ||
727 | return off; | |
728 | } | |
729 | ||
730 | // Set the file offset of all the sections not associated with a | |
731 | // segment. | |
732 | ||
733 | off_t | |
ead1e424 | 734 | Layout::set_section_offsets(off_t off, unsigned int* pshndx) |
75f65a3e | 735 | { |
a3ad94ed ILT |
736 | for (Section_list::iterator p = this->unattached_section_list_.begin(); |
737 | p != this->unattached_section_list_.end(); | |
75f65a3e ILT |
738 | ++p) |
739 | { | |
ead1e424 ILT |
740 | (*p)->set_out_shndx(*pshndx); |
741 | ++*pshndx; | |
61ba1cf9 ILT |
742 | if ((*p)->offset() != -1) |
743 | continue; | |
ead1e424 | 744 | off = align_address(off, (*p)->addralign()); |
75f65a3e ILT |
745 | (*p)->set_address(0, off); |
746 | off += (*p)->data_size(); | |
747 | } | |
748 | return off; | |
749 | } | |
750 | ||
b8e6aad9 ILT |
751 | // Create the symbol table sections. Here we also set the final |
752 | // values of the symbols. At this point all the loadable sections are | |
753 | // fully laid out. | |
75f65a3e ILT |
754 | |
755 | void | |
61ba1cf9 | 756 | Layout::create_symtab_sections(int size, const Input_objects* input_objects, |
75f65a3e | 757 | Symbol_table* symtab, |
16649710 | 758 | off_t* poff) |
75f65a3e | 759 | { |
61ba1cf9 ILT |
760 | int symsize; |
761 | unsigned int align; | |
762 | if (size == 32) | |
763 | { | |
764 | symsize = elfcpp::Elf_sizes<32>::sym_size; | |
765 | align = 4; | |
766 | } | |
767 | else if (size == 64) | |
768 | { | |
769 | symsize = elfcpp::Elf_sizes<64>::sym_size; | |
770 | align = 8; | |
771 | } | |
772 | else | |
a3ad94ed | 773 | gold_unreachable(); |
61ba1cf9 ILT |
774 | |
775 | off_t off = *poff; | |
ead1e424 | 776 | off = align_address(off, align); |
61ba1cf9 ILT |
777 | off_t startoff = off; |
778 | ||
779 | // Save space for the dummy symbol at the start of the section. We | |
780 | // never bother to write this out--it will just be left as zero. | |
781 | off += symsize; | |
c06b7b0b | 782 | unsigned int local_symbol_index = 1; |
61ba1cf9 | 783 | |
a3ad94ed ILT |
784 | // Add STT_SECTION symbols for each Output section which needs one. |
785 | for (Section_list::iterator p = this->section_list_.begin(); | |
786 | p != this->section_list_.end(); | |
787 | ++p) | |
788 | { | |
789 | if (!(*p)->needs_symtab_index()) | |
790 | (*p)->set_symtab_index(-1U); | |
791 | else | |
792 | { | |
793 | (*p)->set_symtab_index(local_symbol_index); | |
794 | ++local_symbol_index; | |
795 | off += symsize; | |
796 | } | |
797 | } | |
798 | ||
f6ce93d6 ILT |
799 | for (Input_objects::Relobj_iterator p = input_objects->relobj_begin(); |
800 | p != input_objects->relobj_end(); | |
75f65a3e ILT |
801 | ++p) |
802 | { | |
803 | Task_lock_obj<Object> tlo(**p); | |
c06b7b0b ILT |
804 | unsigned int index = (*p)->finalize_local_symbols(local_symbol_index, |
805 | off, | |
806 | &this->sympool_); | |
807 | off += (index - local_symbol_index) * symsize; | |
808 | local_symbol_index = index; | |
75f65a3e ILT |
809 | } |
810 | ||
c06b7b0b | 811 | unsigned int local_symcount = local_symbol_index; |
a3ad94ed | 812 | gold_assert(local_symcount * symsize == off - startoff); |
61ba1cf9 | 813 | |
16649710 ILT |
814 | off_t dynoff; |
815 | size_t dyn_global_index; | |
816 | size_t dyncount; | |
817 | if (this->dynsym_section_ == NULL) | |
818 | { | |
819 | dynoff = 0; | |
820 | dyn_global_index = 0; | |
821 | dyncount = 0; | |
822 | } | |
823 | else | |
824 | { | |
825 | dyn_global_index = this->dynsym_section_->info(); | |
826 | off_t locsize = dyn_global_index * this->dynsym_section_->entsize(); | |
827 | dynoff = this->dynsym_section_->offset() + locsize; | |
828 | dyncount = (this->dynsym_section_->data_size() - locsize) / symsize; | |
829 | gold_assert(dyncount * symsize | |
830 | == this->dynsym_section_->data_size() - locsize); | |
831 | } | |
832 | ||
833 | off = symtab->finalize(local_symcount, off, dynoff, dyn_global_index, | |
834 | dyncount, &this->sympool_); | |
75f65a3e | 835 | |
61ba1cf9 ILT |
836 | this->sympool_.set_string_offsets(); |
837 | ||
f0641a0b | 838 | const char* symtab_name = this->namepool_.add(".symtab", NULL); |
a3ad94ed ILT |
839 | Output_section* osymtab = this->make_output_section(symtab_name, |
840 | elfcpp::SHT_SYMTAB, | |
841 | 0); | |
842 | this->symtab_section_ = osymtab; | |
843 | ||
844 | Output_section_data* pos = new Output_data_space(off - startoff, | |
845 | align); | |
846 | osymtab->add_output_section_data(pos); | |
61ba1cf9 | 847 | |
f0641a0b | 848 | const char* strtab_name = this->namepool_.add(".strtab", NULL); |
a3ad94ed ILT |
849 | Output_section* ostrtab = this->make_output_section(strtab_name, |
850 | elfcpp::SHT_STRTAB, | |
851 | 0); | |
852 | ||
853 | Output_section_data* pstr = new Output_data_strtab(&this->sympool_); | |
854 | ostrtab->add_output_section_data(pstr); | |
61ba1cf9 ILT |
855 | |
856 | osymtab->set_address(0, startoff); | |
16649710 | 857 | osymtab->set_link_section(ostrtab); |
61ba1cf9 ILT |
858 | osymtab->set_info(local_symcount); |
859 | osymtab->set_entsize(symsize); | |
61ba1cf9 ILT |
860 | |
861 | *poff = off; | |
75f65a3e ILT |
862 | } |
863 | ||
864 | // Create the .shstrtab section, which holds the names of the | |
865 | // sections. At the time this is called, we have created all the | |
866 | // output sections except .shstrtab itself. | |
867 | ||
868 | Output_section* | |
869 | Layout::create_shstrtab() | |
870 | { | |
871 | // FIXME: We don't need to create a .shstrtab section if we are | |
872 | // stripping everything. | |
873 | ||
f0641a0b | 874 | const char* name = this->namepool_.add(".shstrtab", NULL); |
75f65a3e | 875 | |
61ba1cf9 ILT |
876 | this->namepool_.set_string_offsets(); |
877 | ||
a3ad94ed | 878 | Output_section* os = this->make_output_section(name, elfcpp::SHT_STRTAB, 0); |
75f65a3e | 879 | |
a3ad94ed ILT |
880 | Output_section_data* posd = new Output_data_strtab(&this->namepool_); |
881 | os->add_output_section_data(posd); | |
75f65a3e ILT |
882 | |
883 | return os; | |
884 | } | |
885 | ||
886 | // Create the section headers. SIZE is 32 or 64. OFF is the file | |
887 | // offset. | |
888 | ||
889 | Output_section_headers* | |
61ba1cf9 | 890 | Layout::create_shdrs(int size, bool big_endian, off_t* poff) |
75f65a3e ILT |
891 | { |
892 | Output_section_headers* oshdrs; | |
16649710 ILT |
893 | oshdrs = new Output_section_headers(size, big_endian, this, |
894 | &this->segment_list_, | |
895 | &this->unattached_section_list_, | |
61ba1cf9 | 896 | &this->namepool_); |
ead1e424 | 897 | off_t off = align_address(*poff, oshdrs->addralign()); |
75f65a3e | 898 | oshdrs->set_address(0, off); |
61ba1cf9 ILT |
899 | off += oshdrs->data_size(); |
900 | *poff = off; | |
901 | this->special_output_list_.push_back(oshdrs); | |
75f65a3e | 902 | return oshdrs; |
54dc6425 ILT |
903 | } |
904 | ||
dbe717ef ILT |
905 | // Create the dynamic symbol table. |
906 | ||
907 | void | |
14b31740 ILT |
908 | Layout::create_dynamic_symtab(const Target* target, Symbol_table* symtab, |
909 | Output_section **pdynstr, | |
910 | unsigned int* plocal_dynamic_count, | |
911 | std::vector<Symbol*>* pdynamic_symbols, | |
912 | Versions* pversions) | |
dbe717ef | 913 | { |
a3ad94ed ILT |
914 | // Count all the symbols in the dynamic symbol table, and set the |
915 | // dynamic symbol indexes. | |
dbe717ef | 916 | |
a3ad94ed ILT |
917 | // Skip symbol 0, which is always all zeroes. |
918 | unsigned int index = 1; | |
dbe717ef | 919 | |
a3ad94ed ILT |
920 | // Add STT_SECTION symbols for each Output section which needs one. |
921 | for (Section_list::iterator p = this->section_list_.begin(); | |
922 | p != this->section_list_.end(); | |
923 | ++p) | |
924 | { | |
925 | if (!(*p)->needs_dynsym_index()) | |
926 | (*p)->set_dynsym_index(-1U); | |
927 | else | |
928 | { | |
929 | (*p)->set_dynsym_index(index); | |
930 | ++index; | |
931 | } | |
932 | } | |
933 | ||
934 | // FIXME: Some targets apparently require local symbols in the | |
935 | // dynamic symbol table. Here is where we will have to count them, | |
936 | // and set the dynamic symbol indexes, and add the names to | |
937 | // this->dynpool_. | |
938 | ||
939 | unsigned int local_symcount = index; | |
14b31740 | 940 | *plocal_dynamic_count = local_symcount; |
a3ad94ed ILT |
941 | |
942 | // FIXME: We have to tell set_dynsym_indexes whether the | |
943 | // -E/--export-dynamic option was used. | |
14b31740 ILT |
944 | index = symtab->set_dynsym_indexes(&this->options_, target, index, |
945 | pdynamic_symbols, &this->dynpool_, | |
946 | pversions); | |
a3ad94ed ILT |
947 | |
948 | int symsize; | |
949 | unsigned int align; | |
950 | const int size = target->get_size(); | |
951 | if (size == 32) | |
952 | { | |
953 | symsize = elfcpp::Elf_sizes<32>::sym_size; | |
954 | align = 4; | |
955 | } | |
956 | else if (size == 64) | |
957 | { | |
958 | symsize = elfcpp::Elf_sizes<64>::sym_size; | |
959 | align = 8; | |
960 | } | |
961 | else | |
962 | gold_unreachable(); | |
963 | ||
14b31740 ILT |
964 | // Create the dynamic symbol table section. |
965 | ||
a3ad94ed ILT |
966 | const char* dynsym_name = this->namepool_.add(".dynsym", NULL); |
967 | Output_section* dynsym = this->make_output_section(dynsym_name, | |
968 | elfcpp::SHT_DYNSYM, | |
969 | elfcpp::SHF_ALLOC); | |
970 | ||
971 | Output_section_data* odata = new Output_data_space(index * symsize, | |
972 | align); | |
973 | dynsym->add_output_section_data(odata); | |
974 | ||
975 | dynsym->set_info(local_symcount); | |
976 | dynsym->set_entsize(symsize); | |
977 | dynsym->set_addralign(align); | |
978 | ||
979 | this->dynsym_section_ = dynsym; | |
980 | ||
16649710 | 981 | Output_data_dynamic* const odyn = this->dynamic_data_; |
a3ad94ed ILT |
982 | odyn->add_section_address(elfcpp::DT_SYMTAB, dynsym); |
983 | odyn->add_constant(elfcpp::DT_SYMENT, symsize); | |
984 | ||
14b31740 ILT |
985 | // Create the dynamic string table section. |
986 | ||
a3ad94ed ILT |
987 | const char* dynstr_name = this->namepool_.add(".dynstr", NULL); |
988 | Output_section* dynstr = this->make_output_section(dynstr_name, | |
989 | elfcpp::SHT_STRTAB, | |
990 | elfcpp::SHF_ALLOC); | |
991 | ||
992 | Output_section_data* strdata = new Output_data_strtab(&this->dynpool_); | |
993 | dynstr->add_output_section_data(strdata); | |
994 | ||
16649710 ILT |
995 | dynsym->set_link_section(dynstr); |
996 | this->dynamic_section_->set_link_section(dynstr); | |
997 | ||
a3ad94ed ILT |
998 | odyn->add_section_address(elfcpp::DT_STRTAB, dynstr); |
999 | odyn->add_section_size(elfcpp::DT_STRSZ, dynstr); | |
1000 | ||
14b31740 ILT |
1001 | *pdynstr = dynstr; |
1002 | ||
1003 | // Create the hash tables. | |
1004 | ||
a3ad94ed ILT |
1005 | // FIXME: We need an option to create a GNU hash table. |
1006 | ||
1007 | unsigned char* phash; | |
1008 | unsigned int hashlen; | |
14b31740 | 1009 | Dynobj::create_elf_hash_table(target, *pdynamic_symbols, local_symcount, |
a3ad94ed ILT |
1010 | &phash, &hashlen); |
1011 | ||
1012 | const char* hash_name = this->namepool_.add(".hash", NULL); | |
1013 | Output_section* hashsec = this->make_output_section(hash_name, | |
1014 | elfcpp::SHT_HASH, | |
1015 | elfcpp::SHF_ALLOC); | |
1016 | ||
1017 | Output_section_data* hashdata = new Output_data_const_buffer(phash, | |
1018 | hashlen, | |
1019 | align); | |
1020 | hashsec->add_output_section_data(hashdata); | |
1021 | ||
16649710 | 1022 | hashsec->set_link_section(dynsym); |
a3ad94ed | 1023 | hashsec->set_entsize(4); |
a3ad94ed ILT |
1024 | |
1025 | odyn->add_section_address(elfcpp::DT_HASH, hashsec); | |
dbe717ef ILT |
1026 | } |
1027 | ||
14b31740 ILT |
1028 | // Create the version sections. |
1029 | ||
1030 | void | |
1031 | Layout::create_version_sections(const Target* target, const Versions* versions, | |
1032 | unsigned int local_symcount, | |
1033 | const std::vector<Symbol*>& dynamic_symbols, | |
1034 | const Output_section* dynstr) | |
1035 | { | |
1036 | if (!versions->any_defs() && !versions->any_needs()) | |
1037 | return; | |
1038 | ||
1039 | if (target->get_size() == 32) | |
1040 | { | |
1041 | if (target->is_big_endian()) | |
193a53d9 ILT |
1042 | { |
1043 | #ifdef HAVE_TARGET_32_BIG | |
1044 | this->sized_create_version_sections | |
1045 | SELECT_SIZE_ENDIAN_NAME(32, true)( | |
1046 | versions, local_symcount, dynamic_symbols, dynstr | |
1047 | SELECT_SIZE_ENDIAN(32, true)); | |
1048 | #else | |
1049 | gold_unreachable(); | |
1050 | #endif | |
1051 | } | |
14b31740 | 1052 | else |
193a53d9 ILT |
1053 | { |
1054 | #ifdef HAVE_TARGET_32_LITTLE | |
1055 | this->sized_create_version_sections | |
1056 | SELECT_SIZE_ENDIAN_NAME(32, false)( | |
1057 | versions, local_symcount, dynamic_symbols, dynstr | |
1058 | SELECT_SIZE_ENDIAN(32, false)); | |
1059 | #else | |
1060 | gold_unreachable(); | |
1061 | #endif | |
1062 | } | |
14b31740 ILT |
1063 | } |
1064 | else if (target->get_size() == 64) | |
1065 | { | |
1066 | if (target->is_big_endian()) | |
193a53d9 ILT |
1067 | { |
1068 | #ifdef HAVE_TARGET_64_BIG | |
1069 | this->sized_create_version_sections | |
1070 | SELECT_SIZE_ENDIAN_NAME(64, true)( | |
1071 | versions, local_symcount, dynamic_symbols, dynstr | |
1072 | SELECT_SIZE_ENDIAN(64, true)); | |
1073 | #else | |
1074 | gold_unreachable(); | |
1075 | #endif | |
1076 | } | |
14b31740 | 1077 | else |
193a53d9 ILT |
1078 | { |
1079 | #ifdef HAVE_TARGET_64_LITTLE | |
1080 | this->sized_create_version_sections | |
1081 | SELECT_SIZE_ENDIAN_NAME(64, false)( | |
1082 | versions, local_symcount, dynamic_symbols, dynstr | |
1083 | SELECT_SIZE_ENDIAN(64, false)); | |
1084 | #else | |
1085 | gold_unreachable(); | |
1086 | #endif | |
1087 | } | |
14b31740 ILT |
1088 | } |
1089 | else | |
1090 | gold_unreachable(); | |
1091 | } | |
1092 | ||
1093 | // Create the version sections, sized version. | |
1094 | ||
1095 | template<int size, bool big_endian> | |
1096 | void | |
1097 | Layout::sized_create_version_sections( | |
1098 | const Versions* versions, | |
1099 | unsigned int local_symcount, | |
1100 | const std::vector<Symbol*>& dynamic_symbols, | |
91da9340 ILT |
1101 | const Output_section* dynstr |
1102 | ACCEPT_SIZE_ENDIAN) | |
14b31740 ILT |
1103 | { |
1104 | const char* vname = this->namepool_.add(".gnu.version", NULL); | |
1105 | Output_section* vsec = this->make_output_section(vname, | |
1106 | elfcpp::SHT_GNU_versym, | |
1107 | elfcpp::SHF_ALLOC); | |
1108 | ||
1109 | unsigned char* vbuf; | |
1110 | unsigned int vsize; | |
91da9340 | 1111 | versions->symbol_section_contents SELECT_SIZE_ENDIAN_NAME(size, big_endian)( |
7e1edb90 ILT |
1112 | &this->dynpool_, local_symcount, dynamic_symbols, &vbuf, &vsize |
1113 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
14b31740 ILT |
1114 | |
1115 | Output_section_data* vdata = new Output_data_const_buffer(vbuf, vsize, 2); | |
1116 | ||
1117 | vsec->add_output_section_data(vdata); | |
1118 | vsec->set_entsize(2); | |
1119 | vsec->set_link_section(this->dynsym_section_); | |
1120 | ||
1121 | Output_data_dynamic* const odyn = this->dynamic_data_; | |
1122 | odyn->add_section_address(elfcpp::DT_VERSYM, vsec); | |
1123 | ||
1124 | if (versions->any_defs()) | |
1125 | { | |
1126 | const char* vdname = this->namepool_.add(".gnu.version_d", NULL); | |
1127 | Output_section *vdsec; | |
1128 | vdsec = this->make_output_section(vdname, elfcpp::SHT_GNU_verdef, | |
1129 | elfcpp::SHF_ALLOC); | |
1130 | ||
1131 | unsigned char* vdbuf; | |
1132 | unsigned int vdsize; | |
1133 | unsigned int vdentries; | |
91da9340 ILT |
1134 | versions->def_section_contents SELECT_SIZE_ENDIAN_NAME(size, big_endian)( |
1135 | &this->dynpool_, &vdbuf, &vdsize, &vdentries | |
1136 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
14b31740 ILT |
1137 | |
1138 | Output_section_data* vddata = new Output_data_const_buffer(vdbuf, | |
1139 | vdsize, | |
1140 | 4); | |
1141 | ||
1142 | vdsec->add_output_section_data(vddata); | |
1143 | vdsec->set_link_section(dynstr); | |
1144 | vdsec->set_info(vdentries); | |
1145 | ||
1146 | odyn->add_section_address(elfcpp::DT_VERDEF, vdsec); | |
1147 | odyn->add_constant(elfcpp::DT_VERDEFNUM, vdentries); | |
1148 | } | |
1149 | ||
1150 | if (versions->any_needs()) | |
1151 | { | |
1152 | const char* vnname = this->namepool_.add(".gnu.version_r", NULL); | |
1153 | Output_section* vnsec; | |
1154 | vnsec = this->make_output_section(vnname, elfcpp::SHT_GNU_verneed, | |
1155 | elfcpp::SHF_ALLOC); | |
1156 | ||
1157 | unsigned char* vnbuf; | |
1158 | unsigned int vnsize; | |
1159 | unsigned int vnentries; | |
91da9340 ILT |
1160 | versions->need_section_contents SELECT_SIZE_ENDIAN_NAME(size, big_endian) |
1161 | (&this->dynpool_, &vnbuf, &vnsize, &vnentries | |
1162 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
14b31740 ILT |
1163 | |
1164 | Output_section_data* vndata = new Output_data_const_buffer(vnbuf, | |
1165 | vnsize, | |
1166 | 4); | |
1167 | ||
1168 | vnsec->add_output_section_data(vndata); | |
1169 | vnsec->set_link_section(dynstr); | |
1170 | vnsec->set_info(vnentries); | |
1171 | ||
1172 | odyn->add_section_address(elfcpp::DT_VERNEED, vnsec); | |
1173 | odyn->add_constant(elfcpp::DT_VERNEEDNUM, vnentries); | |
1174 | } | |
1175 | } | |
1176 | ||
dbe717ef ILT |
1177 | // Create the .interp section and PT_INTERP segment. |
1178 | ||
1179 | void | |
1180 | Layout::create_interp(const Target* target) | |
1181 | { | |
1182 | const char* interp = this->options_.dynamic_linker(); | |
1183 | if (interp == NULL) | |
1184 | { | |
1185 | interp = target->dynamic_linker(); | |
a3ad94ed | 1186 | gold_assert(interp != NULL); |
dbe717ef ILT |
1187 | } |
1188 | ||
1189 | size_t len = strlen(interp) + 1; | |
1190 | ||
1191 | Output_section_data* odata = new Output_data_const(interp, len, 1); | |
1192 | ||
1193 | const char* interp_name = this->namepool_.add(".interp", NULL); | |
1194 | Output_section* osec = this->make_output_section(interp_name, | |
1195 | elfcpp::SHT_PROGBITS, | |
1196 | elfcpp::SHF_ALLOC); | |
1197 | osec->add_output_section_data(odata); | |
1198 | ||
1199 | Output_segment* oseg = new Output_segment(elfcpp::PT_INTERP, elfcpp::PF_R); | |
1200 | this->segment_list_.push_back(oseg); | |
1201 | oseg->add_initial_output_section(osec, elfcpp::PF_R); | |
1202 | } | |
1203 | ||
a3ad94ed ILT |
1204 | // Finish the .dynamic section and PT_DYNAMIC segment. |
1205 | ||
1206 | void | |
1207 | Layout::finish_dynamic_section(const Input_objects* input_objects, | |
16649710 | 1208 | const Symbol_table* symtab) |
a3ad94ed | 1209 | { |
a3ad94ed ILT |
1210 | Output_segment* oseg = new Output_segment(elfcpp::PT_DYNAMIC, |
1211 | elfcpp::PF_R | elfcpp::PF_W); | |
1212 | this->segment_list_.push_back(oseg); | |
1213 | oseg->add_initial_output_section(this->dynamic_section_, | |
1214 | elfcpp::PF_R | elfcpp::PF_W); | |
1215 | ||
16649710 ILT |
1216 | Output_data_dynamic* const odyn = this->dynamic_data_; |
1217 | ||
a3ad94ed ILT |
1218 | for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin(); |
1219 | p != input_objects->dynobj_end(); | |
1220 | ++p) | |
1221 | { | |
1222 | // FIXME: Handle --as-needed. | |
1223 | odyn->add_string(elfcpp::DT_NEEDED, (*p)->soname()); | |
1224 | } | |
1225 | ||
1226 | // FIXME: Support --init and --fini. | |
1227 | Symbol* sym = symtab->lookup("_init"); | |
14b31740 | 1228 | if (sym != NULL && sym->is_defined() && !sym->is_from_dynobj()) |
a3ad94ed ILT |
1229 | odyn->add_symbol(elfcpp::DT_INIT, sym); |
1230 | ||
1231 | sym = symtab->lookup("_fini"); | |
14b31740 | 1232 | if (sym != NULL && sym->is_defined() && !sym->is_from_dynobj()) |
a3ad94ed ILT |
1233 | odyn->add_symbol(elfcpp::DT_FINI, sym); |
1234 | ||
1235 | // FIXME: Support DT_INIT_ARRAY and DT_FINI_ARRAY. | |
41f542e7 ILT |
1236 | |
1237 | // Add a DT_RPATH entry if needed. | |
1238 | const General_options::Dir_list& rpath(this->options_.rpath()); | |
1239 | if (!rpath.empty()) | |
1240 | { | |
1241 | std::string rpath_val; | |
1242 | for (General_options::Dir_list::const_iterator p = rpath.begin(); | |
1243 | p != rpath.end(); | |
1244 | ++p) | |
1245 | { | |
1246 | if (rpath_val.empty()) | |
1247 | rpath_val = *p; | |
1248 | else | |
1249 | { | |
1250 | // Eliminate duplicates. | |
1251 | General_options::Dir_list::const_iterator q; | |
1252 | for (q = rpath.begin(); q != p; ++q) | |
1253 | if (strcmp(*q, *p) == 0) | |
1254 | break; | |
1255 | if (q == p) | |
1256 | { | |
1257 | rpath_val += ':'; | |
1258 | rpath_val += *p; | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | odyn->add_string(elfcpp::DT_RPATH, rpath_val); | |
1264 | } | |
a3ad94ed ILT |
1265 | } |
1266 | ||
a2fb1b05 ILT |
1267 | // The mapping of .gnu.linkonce section names to real section names. |
1268 | ||
ead1e424 | 1269 | #define MAPPING_INIT(f, t) { f, sizeof(f) - 1, t, sizeof(t) - 1 } |
a2fb1b05 ILT |
1270 | const Layout::Linkonce_mapping Layout::linkonce_mapping[] = |
1271 | { | |
1272 | MAPPING_INIT("d.rel.ro", ".data.rel.ro"), // Must be before "d". | |
1273 | MAPPING_INIT("t", ".text"), | |
1274 | MAPPING_INIT("r", ".rodata"), | |
1275 | MAPPING_INIT("d", ".data"), | |
1276 | MAPPING_INIT("b", ".bss"), | |
1277 | MAPPING_INIT("s", ".sdata"), | |
1278 | MAPPING_INIT("sb", ".sbss"), | |
1279 | MAPPING_INIT("s2", ".sdata2"), | |
1280 | MAPPING_INIT("sb2", ".sbss2"), | |
1281 | MAPPING_INIT("wi", ".debug_info"), | |
1282 | MAPPING_INIT("td", ".tdata"), | |
1283 | MAPPING_INIT("tb", ".tbss"), | |
1284 | MAPPING_INIT("lr", ".lrodata"), | |
1285 | MAPPING_INIT("l", ".ldata"), | |
1286 | MAPPING_INIT("lb", ".lbss"), | |
1287 | }; | |
1288 | #undef MAPPING_INIT | |
1289 | ||
1290 | const int Layout::linkonce_mapping_count = | |
1291 | sizeof(Layout::linkonce_mapping) / sizeof(Layout::linkonce_mapping[0]); | |
1292 | ||
1293 | // Return the name of the output section to use for a .gnu.linkonce | |
1294 | // section. This is based on the default ELF linker script of the old | |
1295 | // GNU linker. For example, we map a name like ".gnu.linkonce.t.foo" | |
ead1e424 ILT |
1296 | // to ".text". Set *PLEN to the length of the name. *PLEN is |
1297 | // initialized to the length of NAME. | |
a2fb1b05 ILT |
1298 | |
1299 | const char* | |
ead1e424 | 1300 | Layout::linkonce_output_name(const char* name, size_t *plen) |
a2fb1b05 ILT |
1301 | { |
1302 | const char* s = name + sizeof(".gnu.linkonce") - 1; | |
1303 | if (*s != '.') | |
1304 | return name; | |
1305 | ++s; | |
1306 | const Linkonce_mapping* plm = linkonce_mapping; | |
1307 | for (int i = 0; i < linkonce_mapping_count; ++i, ++plm) | |
1308 | { | |
1309 | if (strncmp(s, plm->from, plm->fromlen) == 0 && s[plm->fromlen] == '.') | |
ead1e424 ILT |
1310 | { |
1311 | *plen = plm->tolen; | |
1312 | return plm->to; | |
1313 | } | |
a2fb1b05 ILT |
1314 | } |
1315 | return name; | |
1316 | } | |
1317 | ||
ead1e424 ILT |
1318 | // Choose the output section name to use given an input section name. |
1319 | // Set *PLEN to the length of the name. *PLEN is initialized to the | |
1320 | // length of NAME. | |
1321 | ||
1322 | const char* | |
1323 | Layout::output_section_name(const char* name, size_t* plen) | |
1324 | { | |
1325 | if (Layout::is_linkonce(name)) | |
1326 | { | |
1327 | // .gnu.linkonce sections are laid out as though they were named | |
1328 | // for the sections are placed into. | |
1329 | return Layout::linkonce_output_name(name, plen); | |
1330 | } | |
1331 | ||
1332 | // If the section name has no '.', or only an initial '.', we use | |
1333 | // the name unchanged (i.e., ".text" is unchanged). | |
1334 | ||
1335 | // Otherwise, if the section name does not include ".rel", we drop | |
1336 | // the last '.' and everything that follows (i.e., ".text.XXX" | |
1337 | // becomes ".text"). | |
1338 | ||
1339 | // Otherwise, if the section name has zero or one '.' after the | |
1340 | // ".rel", we use the name unchanged (i.e., ".rel.text" is | |
1341 | // unchanged). | |
1342 | ||
1343 | // Otherwise, we drop the last '.' and everything that follows | |
1344 | // (i.e., ".rel.text.XXX" becomes ".rel.text"). | |
1345 | ||
1346 | const char* s = name; | |
1347 | if (*s == '.') | |
1348 | ++s; | |
1349 | const char* sdot = strchr(s, '.'); | |
1350 | if (sdot == NULL) | |
1351 | return name; | |
1352 | ||
1353 | const char* srel = strstr(s, ".rel"); | |
1354 | if (srel == NULL) | |
1355 | { | |
1356 | *plen = sdot - name; | |
1357 | return name; | |
1358 | } | |
1359 | ||
1360 | sdot = strchr(srel + 1, '.'); | |
1361 | if (sdot == NULL) | |
1362 | return name; | |
1363 | sdot = strchr(sdot + 1, '.'); | |
1364 | if (sdot == NULL) | |
1365 | return name; | |
1366 | ||
1367 | *plen = sdot - name; | |
1368 | return name; | |
1369 | } | |
1370 | ||
a2fb1b05 ILT |
1371 | // Record the signature of a comdat section, and return whether to |
1372 | // include it in the link. If GROUP is true, this is a regular | |
1373 | // section group. If GROUP is false, this is a group signature | |
1374 | // derived from the name of a linkonce section. We want linkonce | |
1375 | // signatures and group signatures to block each other, but we don't | |
1376 | // want a linkonce signature to block another linkonce signature. | |
1377 | ||
1378 | bool | |
1379 | Layout::add_comdat(const char* signature, bool group) | |
1380 | { | |
1381 | std::string sig(signature); | |
1382 | std::pair<Signatures::iterator, bool> ins( | |
ead1e424 | 1383 | this->signatures_.insert(std::make_pair(sig, group))); |
a2fb1b05 ILT |
1384 | |
1385 | if (ins.second) | |
1386 | { | |
1387 | // This is the first time we've seen this signature. | |
1388 | return true; | |
1389 | } | |
1390 | ||
1391 | if (ins.first->second) | |
1392 | { | |
1393 | // We've already seen a real section group with this signature. | |
1394 | return false; | |
1395 | } | |
1396 | else if (group) | |
1397 | { | |
1398 | // This is a real section group, and we've already seen a | |
1399 | // linkonce section with tihs signature. Record that we've seen | |
1400 | // a section group, and don't include this section group. | |
1401 | ins.first->second = true; | |
1402 | return false; | |
1403 | } | |
1404 | else | |
1405 | { | |
1406 | // We've already seen a linkonce section and this is a linkonce | |
1407 | // section. These don't block each other--this may be the same | |
1408 | // symbol name with different section types. | |
1409 | return true; | |
1410 | } | |
1411 | } | |
1412 | ||
61ba1cf9 ILT |
1413 | // Write out data not associated with a section or the symbol table. |
1414 | ||
1415 | void | |
a3ad94ed ILT |
1416 | Layout::write_data(const Symbol_table* symtab, const Target* target, |
1417 | Output_file* of) const | |
61ba1cf9 | 1418 | { |
a3ad94ed ILT |
1419 | const Output_section* symtab_section = this->symtab_section_; |
1420 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
1421 | p != this->section_list_.end(); | |
1422 | ++p) | |
1423 | { | |
1424 | if ((*p)->needs_symtab_index()) | |
1425 | { | |
1426 | gold_assert(symtab_section != NULL); | |
1427 | unsigned int index = (*p)->symtab_index(); | |
1428 | gold_assert(index > 0 && index != -1U); | |
1429 | off_t off = (symtab_section->offset() | |
1430 | + index * symtab_section->entsize()); | |
1431 | symtab->write_section_symbol(target, *p, of, off); | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | const Output_section* dynsym_section = this->dynsym_section_; | |
1436 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
1437 | p != this->section_list_.end(); | |
1438 | ++p) | |
1439 | { | |
1440 | if ((*p)->needs_dynsym_index()) | |
1441 | { | |
1442 | gold_assert(dynsym_section != NULL); | |
1443 | unsigned int index = (*p)->dynsym_index(); | |
1444 | gold_assert(index > 0 && index != -1U); | |
1445 | off_t off = (dynsym_section->offset() | |
1446 | + index * dynsym_section->entsize()); | |
1447 | symtab->write_section_symbol(target, *p, of, off); | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | // Write out the Output_sections. Most won't have anything to | |
1452 | // write, since most of the data will come from input sections which | |
1453 | // are handled elsewhere. But some Output_sections do have | |
1454 | // Output_data. | |
1455 | for (Section_list::const_iterator p = this->section_list_.begin(); | |
1456 | p != this->section_list_.end(); | |
1457 | ++p) | |
1458 | (*p)->write(of); | |
1459 | ||
1460 | // Write out the Output_data which are not in an Output_section. | |
61ba1cf9 ILT |
1461 | for (Data_list::const_iterator p = this->special_output_list_.begin(); |
1462 | p != this->special_output_list_.end(); | |
1463 | ++p) | |
1464 | (*p)->write(of); | |
1465 | } | |
1466 | ||
1467 | // Write_data_task methods. | |
1468 | ||
1469 | // We can always run this task. | |
1470 | ||
1471 | Task::Is_runnable_type | |
1472 | Write_data_task::is_runnable(Workqueue*) | |
1473 | { | |
1474 | return IS_RUNNABLE; | |
1475 | } | |
1476 | ||
1477 | // We need to unlock FINAL_BLOCKER when finished. | |
1478 | ||
1479 | Task_locker* | |
1480 | Write_data_task::locks(Workqueue* workqueue) | |
1481 | { | |
1482 | return new Task_locker_block(*this->final_blocker_, workqueue); | |
1483 | } | |
1484 | ||
1485 | // Run the task--write out the data. | |
1486 | ||
1487 | void | |
1488 | Write_data_task::run(Workqueue*) | |
1489 | { | |
a3ad94ed | 1490 | this->layout_->write_data(this->symtab_, this->target_, this->of_); |
61ba1cf9 ILT |
1491 | } |
1492 | ||
1493 | // Write_symbols_task methods. | |
1494 | ||
1495 | // We can always run this task. | |
1496 | ||
1497 | Task::Is_runnable_type | |
1498 | Write_symbols_task::is_runnable(Workqueue*) | |
1499 | { | |
1500 | return IS_RUNNABLE; | |
1501 | } | |
1502 | ||
1503 | // We need to unlock FINAL_BLOCKER when finished. | |
1504 | ||
1505 | Task_locker* | |
1506 | Write_symbols_task::locks(Workqueue* workqueue) | |
1507 | { | |
1508 | return new Task_locker_block(*this->final_blocker_, workqueue); | |
1509 | } | |
1510 | ||
1511 | // Run the task--write out the symbols. | |
1512 | ||
1513 | void | |
1514 | Write_symbols_task::run(Workqueue*) | |
1515 | { | |
16649710 ILT |
1516 | this->symtab_->write_globals(this->target_, this->sympool_, this->dynpool_, |
1517 | this->of_); | |
61ba1cf9 ILT |
1518 | } |
1519 | ||
92e059d8 | 1520 | // Close_task_runner methods. |
61ba1cf9 ILT |
1521 | |
1522 | // Run the task--close the file. | |
1523 | ||
1524 | void | |
92e059d8 | 1525 | Close_task_runner::run(Workqueue*) |
61ba1cf9 ILT |
1526 | { |
1527 | this->of_->close(); | |
1528 | } | |
1529 | ||
a2fb1b05 ILT |
1530 | // Instantiate the templates we need. We could use the configure |
1531 | // script to restrict this to only the ones for implemented targets. | |
1532 | ||
193a53d9 | 1533 | #ifdef HAVE_TARGET_32_LITTLE |
a2fb1b05 ILT |
1534 | template |
1535 | Output_section* | |
f6ce93d6 | 1536 | Layout::layout<32, false>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1537 | const elfcpp::Shdr<32, false>& shdr, off_t*); |
193a53d9 | 1538 | #endif |
a2fb1b05 | 1539 | |
193a53d9 | 1540 | #ifdef HAVE_TARGET_32_BIG |
a2fb1b05 ILT |
1541 | template |
1542 | Output_section* | |
f6ce93d6 | 1543 | Layout::layout<32, true>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1544 | const elfcpp::Shdr<32, true>& shdr, off_t*); |
193a53d9 | 1545 | #endif |
a2fb1b05 | 1546 | |
193a53d9 | 1547 | #ifdef HAVE_TARGET_64_LITTLE |
a2fb1b05 ILT |
1548 | template |
1549 | Output_section* | |
f6ce93d6 | 1550 | Layout::layout<64, false>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1551 | const elfcpp::Shdr<64, false>& shdr, off_t*); |
193a53d9 | 1552 | #endif |
a2fb1b05 | 1553 | |
193a53d9 | 1554 | #ifdef HAVE_TARGET_64_BIG |
a2fb1b05 ILT |
1555 | template |
1556 | Output_section* | |
f6ce93d6 | 1557 | Layout::layout<64, true>(Relobj* object, unsigned int shndx, const char* name, |
a2fb1b05 | 1558 | const elfcpp::Shdr<64, true>& shdr, off_t*); |
193a53d9 | 1559 | #endif |
a2fb1b05 ILT |
1560 | |
1561 | ||
1562 | } // End namespace gold. |