Commit | Line | Data |
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a2fb1b05 ILT |
1 | // output.cc -- manage the output file for gold |
2 | ||
3 | #include "gold.h" | |
4 | ||
5 | #include <cstdlib> | |
61ba1cf9 ILT |
6 | #include <cerrno> |
7 | #include <fcntl.h> | |
8 | #include <unistd.h> | |
9 | #include <sys/mman.h> | |
75f65a3e | 10 | #include <algorithm> |
a2fb1b05 ILT |
11 | |
12 | #include "object.h" | |
ead1e424 ILT |
13 | #include "symtab.h" |
14 | #include "reloc.h" | |
a2fb1b05 ILT |
15 | #include "output.h" |
16 | ||
17 | namespace gold | |
18 | { | |
19 | ||
20 | // Output_data methods. | |
21 | ||
22 | Output_data::~Output_data() | |
23 | { | |
24 | } | |
25 | ||
75f65a3e ILT |
26 | // Set the address and offset. |
27 | ||
28 | void | |
29 | Output_data::set_address(uint64_t addr, off_t off) | |
30 | { | |
31 | this->address_ = addr; | |
32 | this->offset_ = off; | |
33 | ||
34 | // Let the child class know. | |
35 | this->do_set_address(addr, off); | |
36 | } | |
37 | ||
38 | // Return the default alignment for a size--32 or 64. | |
39 | ||
40 | uint64_t | |
41 | Output_data::default_alignment(int size) | |
42 | { | |
43 | if (size == 32) | |
44 | return 4; | |
45 | else if (size == 64) | |
46 | return 8; | |
47 | else | |
48 | abort(); | |
49 | } | |
50 | ||
75f65a3e ILT |
51 | // Output_section_header methods. This currently assumes that the |
52 | // segment and section lists are complete at construction time. | |
53 | ||
54 | Output_section_headers::Output_section_headers( | |
55 | int size, | |
61ba1cf9 | 56 | bool big_endian, |
75f65a3e | 57 | const Layout::Segment_list& segment_list, |
61ba1cf9 ILT |
58 | const Layout::Section_list& section_list, |
59 | const Stringpool* secnamepool) | |
75f65a3e | 60 | : size_(size), |
61ba1cf9 | 61 | big_endian_(big_endian), |
75f65a3e | 62 | segment_list_(segment_list), |
61ba1cf9 ILT |
63 | section_list_(section_list), |
64 | secnamepool_(secnamepool) | |
75f65a3e | 65 | { |
61ba1cf9 ILT |
66 | // Count all the sections. Start with 1 for the null section. |
67 | off_t count = 1; | |
75f65a3e ILT |
68 | for (Layout::Segment_list::const_iterator p = segment_list.begin(); |
69 | p != segment_list.end(); | |
70 | ++p) | |
ead1e424 ILT |
71 | if ((*p)->type() == elfcpp::PT_LOAD) |
72 | count += (*p)->output_section_count(); | |
75f65a3e ILT |
73 | count += section_list.size(); |
74 | ||
75 | int shdr_size; | |
76 | if (size == 32) | |
77 | shdr_size = elfcpp::Elf_sizes<32>::shdr_size; | |
78 | else if (size == 64) | |
79 | shdr_size = elfcpp::Elf_sizes<64>::shdr_size; | |
80 | else | |
81 | abort(); | |
82 | ||
83 | this->set_data_size(count * shdr_size); | |
84 | } | |
85 | ||
61ba1cf9 ILT |
86 | // Write out the section headers. |
87 | ||
75f65a3e | 88 | void |
61ba1cf9 | 89 | Output_section_headers::do_write(Output_file* of) |
a2fb1b05 | 90 | { |
61ba1cf9 ILT |
91 | if (this->size_ == 32) |
92 | { | |
93 | if (this->big_endian_) | |
94 | this->do_sized_write<32, true>(of); | |
95 | else | |
96 | this->do_sized_write<32, false>(of); | |
97 | } | |
98 | else if (this->size_ == 64) | |
99 | { | |
100 | if (this->big_endian_) | |
101 | this->do_sized_write<64, true>(of); | |
102 | else | |
103 | this->do_sized_write<64, false>(of); | |
104 | } | |
105 | else | |
106 | abort(); | |
107 | } | |
108 | ||
109 | template<int size, bool big_endian> | |
110 | void | |
111 | Output_section_headers::do_sized_write(Output_file* of) | |
112 | { | |
113 | off_t all_shdrs_size = this->data_size(); | |
114 | unsigned char* view = of->get_output_view(this->offset(), all_shdrs_size); | |
115 | ||
116 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
117 | unsigned char* v = view; | |
118 | ||
119 | { | |
120 | typename elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
121 | oshdr.put_sh_name(0); | |
122 | oshdr.put_sh_type(elfcpp::SHT_NULL); | |
123 | oshdr.put_sh_flags(0); | |
124 | oshdr.put_sh_addr(0); | |
125 | oshdr.put_sh_offset(0); | |
126 | oshdr.put_sh_size(0); | |
127 | oshdr.put_sh_link(0); | |
128 | oshdr.put_sh_info(0); | |
129 | oshdr.put_sh_addralign(0); | |
130 | oshdr.put_sh_entsize(0); | |
131 | } | |
132 | ||
133 | v += shdr_size; | |
134 | ||
ead1e424 | 135 | unsigned shndx = 1; |
61ba1cf9 ILT |
136 | for (Layout::Segment_list::const_iterator p = this->segment_list_.begin(); |
137 | p != this->segment_list_.end(); | |
138 | ++p) | |
593f47df | 139 | v = (*p)->write_section_headers SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
ead1e424 ILT |
140 | this->secnamepool_, v, &shndx |
141 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
61ba1cf9 ILT |
142 | for (Layout::Section_list::const_iterator p = this->section_list_.begin(); |
143 | p != this->section_list_.end(); | |
144 | ++p) | |
145 | { | |
ead1e424 | 146 | assert(shndx == (*p)->out_shndx()); |
61ba1cf9 ILT |
147 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
148 | (*p)->write_header(this->secnamepool_, &oshdr); | |
149 | v += shdr_size; | |
ead1e424 | 150 | ++shndx; |
61ba1cf9 ILT |
151 | } |
152 | ||
153 | of->write_output_view(this->offset(), all_shdrs_size, view); | |
a2fb1b05 ILT |
154 | } |
155 | ||
54dc6425 ILT |
156 | // Output_segment_header methods. |
157 | ||
61ba1cf9 ILT |
158 | Output_segment_headers::Output_segment_headers( |
159 | int size, | |
160 | bool big_endian, | |
161 | const Layout::Segment_list& segment_list) | |
162 | : size_(size), big_endian_(big_endian), segment_list_(segment_list) | |
163 | { | |
164 | int phdr_size; | |
165 | if (size == 32) | |
166 | phdr_size = elfcpp::Elf_sizes<32>::phdr_size; | |
167 | else if (size == 64) | |
168 | phdr_size = elfcpp::Elf_sizes<64>::phdr_size; | |
169 | else | |
170 | abort(); | |
171 | ||
172 | this->set_data_size(segment_list.size() * phdr_size); | |
173 | } | |
174 | ||
54dc6425 | 175 | void |
61ba1cf9 | 176 | Output_segment_headers::do_write(Output_file* of) |
75f65a3e | 177 | { |
61ba1cf9 ILT |
178 | if (this->size_ == 32) |
179 | { | |
180 | if (this->big_endian_) | |
181 | this->do_sized_write<32, true>(of); | |
182 | else | |
183 | this->do_sized_write<32, false>(of); | |
184 | } | |
185 | else if (this->size_ == 64) | |
186 | { | |
187 | if (this->big_endian_) | |
188 | this->do_sized_write<64, true>(of); | |
189 | else | |
190 | this->do_sized_write<64, false>(of); | |
191 | } | |
192 | else | |
193 | abort(); | |
194 | } | |
195 | ||
196 | template<int size, bool big_endian> | |
197 | void | |
198 | Output_segment_headers::do_sized_write(Output_file* of) | |
199 | { | |
200 | const int phdr_size = elfcpp::Elf_sizes<size>::phdr_size; | |
201 | off_t all_phdrs_size = this->segment_list_.size() * phdr_size; | |
202 | unsigned char* view = of->get_output_view(this->offset(), | |
203 | all_phdrs_size); | |
204 | unsigned char* v = view; | |
205 | for (Layout::Segment_list::const_iterator p = this->segment_list_.begin(); | |
206 | p != this->segment_list_.end(); | |
207 | ++p) | |
208 | { | |
209 | elfcpp::Phdr_write<size, big_endian> ophdr(v); | |
210 | (*p)->write_header(&ophdr); | |
211 | v += phdr_size; | |
212 | } | |
213 | ||
214 | of->write_output_view(this->offset(), all_phdrs_size, view); | |
75f65a3e ILT |
215 | } |
216 | ||
217 | // Output_file_header methods. | |
218 | ||
219 | Output_file_header::Output_file_header(int size, | |
61ba1cf9 | 220 | bool big_endian, |
75f65a3e ILT |
221 | const General_options& options, |
222 | const Target* target, | |
223 | const Symbol_table* symtab, | |
224 | const Output_segment_headers* osh) | |
225 | : size_(size), | |
61ba1cf9 | 226 | big_endian_(big_endian), |
75f65a3e ILT |
227 | options_(options), |
228 | target_(target), | |
229 | symtab_(symtab), | |
61ba1cf9 | 230 | segment_header_(osh), |
75f65a3e ILT |
231 | section_header_(NULL), |
232 | shstrtab_(NULL) | |
233 | { | |
61ba1cf9 ILT |
234 | int ehdr_size; |
235 | if (size == 32) | |
236 | ehdr_size = elfcpp::Elf_sizes<32>::ehdr_size; | |
237 | else if (size == 64) | |
238 | ehdr_size = elfcpp::Elf_sizes<64>::ehdr_size; | |
239 | else | |
240 | abort(); | |
241 | ||
242 | this->set_data_size(ehdr_size); | |
75f65a3e ILT |
243 | } |
244 | ||
245 | // Set the section table information for a file header. | |
246 | ||
247 | void | |
248 | Output_file_header::set_section_info(const Output_section_headers* shdrs, | |
249 | const Output_section* shstrtab) | |
250 | { | |
251 | this->section_header_ = shdrs; | |
252 | this->shstrtab_ = shstrtab; | |
253 | } | |
254 | ||
255 | // Write out the file header. | |
256 | ||
257 | void | |
61ba1cf9 | 258 | Output_file_header::do_write(Output_file* of) |
54dc6425 | 259 | { |
61ba1cf9 ILT |
260 | if (this->size_ == 32) |
261 | { | |
262 | if (this->big_endian_) | |
263 | this->do_sized_write<32, true>(of); | |
264 | else | |
265 | this->do_sized_write<32, false>(of); | |
266 | } | |
267 | else if (this->size_ == 64) | |
268 | { | |
269 | if (this->big_endian_) | |
270 | this->do_sized_write<64, true>(of); | |
271 | else | |
272 | this->do_sized_write<64, false>(of); | |
273 | } | |
274 | else | |
275 | abort(); | |
276 | } | |
277 | ||
278 | // Write out the file header with appropriate size and endianess. | |
279 | ||
280 | template<int size, bool big_endian> | |
281 | void | |
282 | Output_file_header::do_sized_write(Output_file* of) | |
283 | { | |
284 | assert(this->offset() == 0); | |
285 | ||
286 | int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size; | |
287 | unsigned char* view = of->get_output_view(0, ehdr_size); | |
288 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
289 | ||
290 | unsigned char e_ident[elfcpp::EI_NIDENT]; | |
291 | memset(e_ident, 0, elfcpp::EI_NIDENT); | |
292 | e_ident[elfcpp::EI_MAG0] = elfcpp::ELFMAG0; | |
293 | e_ident[elfcpp::EI_MAG1] = elfcpp::ELFMAG1; | |
294 | e_ident[elfcpp::EI_MAG2] = elfcpp::ELFMAG2; | |
295 | e_ident[elfcpp::EI_MAG3] = elfcpp::ELFMAG3; | |
296 | if (size == 32) | |
297 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS32; | |
298 | else if (size == 64) | |
299 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS64; | |
300 | else | |
301 | abort(); | |
302 | e_ident[elfcpp::EI_DATA] = (big_endian | |
303 | ? elfcpp::ELFDATA2MSB | |
304 | : elfcpp::ELFDATA2LSB); | |
305 | e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT; | |
306 | // FIXME: Some targets may need to set EI_OSABI and EI_ABIVERSION. | |
307 | oehdr.put_e_ident(e_ident); | |
308 | ||
309 | elfcpp::ET e_type; | |
310 | // FIXME: ET_DYN. | |
311 | if (this->options_.is_relocatable()) | |
312 | e_type = elfcpp::ET_REL; | |
313 | else | |
314 | e_type = elfcpp::ET_EXEC; | |
315 | oehdr.put_e_type(e_type); | |
316 | ||
317 | oehdr.put_e_machine(this->target_->machine_code()); | |
318 | oehdr.put_e_version(elfcpp::EV_CURRENT); | |
319 | ||
ead1e424 | 320 | // FIXME: Need to support -e, and target specific entry symbol. |
61ba1cf9 ILT |
321 | Symbol* sym = this->symtab_->lookup("_start"); |
322 | typename Sized_symbol<size>::Value_type v; | |
323 | if (sym == NULL) | |
324 | v = 0; | |
325 | else | |
326 | { | |
327 | Sized_symbol<size>* ssym; | |
593f47df | 328 | ssym = this->symtab_->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d | 329 | sym SELECT_SIZE(size)); |
61ba1cf9 ILT |
330 | v = ssym->value(); |
331 | } | |
332 | oehdr.put_e_entry(v); | |
333 | ||
334 | oehdr.put_e_phoff(this->segment_header_->offset()); | |
335 | oehdr.put_e_shoff(this->section_header_->offset()); | |
336 | ||
337 | // FIXME: The target needs to set the flags. | |
338 | oehdr.put_e_flags(0); | |
339 | ||
340 | oehdr.put_e_ehsize(elfcpp::Elf_sizes<size>::ehdr_size); | |
341 | oehdr.put_e_phentsize(elfcpp::Elf_sizes<size>::phdr_size); | |
342 | oehdr.put_e_phnum(this->segment_header_->data_size() | |
343 | / elfcpp::Elf_sizes<size>::phdr_size); | |
344 | oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size); | |
345 | oehdr.put_e_shnum(this->section_header_->data_size() | |
346 | / elfcpp::Elf_sizes<size>::shdr_size); | |
ead1e424 | 347 | oehdr.put_e_shstrndx(this->shstrtab_->out_shndx()); |
61ba1cf9 ILT |
348 | |
349 | of->write_output_view(0, ehdr_size, view); | |
54dc6425 ILT |
350 | } |
351 | ||
dbe717ef ILT |
352 | // Output_data_const methods. |
353 | ||
354 | void | |
355 | Output_data_const::do_write(Output_file* output) | |
356 | { | |
357 | output->write(this->offset(), data_.data(), data_.size()); | |
358 | } | |
359 | ||
360 | // Output_section_data methods. | |
361 | ||
362 | unsigned int | |
363 | Output_section_data::do_out_shndx() const | |
364 | { | |
365 | assert(this->output_section_ != NULL); | |
366 | return this->output_section_->out_shndx(); | |
367 | } | |
368 | ||
c06b7b0b ILT |
369 | // Output_reloc methods. |
370 | ||
371 | // Get the symbol index of a relocation. | |
372 | ||
373 | template<bool dynamic, int size, bool big_endian> | |
374 | unsigned int | |
375 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_symbol_index() | |
376 | const | |
377 | { | |
378 | unsigned int index; | |
379 | switch (this->local_sym_index_) | |
380 | { | |
381 | case INVALID_CODE: | |
382 | abort(); | |
383 | ||
384 | case GSYM_CODE: | |
385 | if (this->u_.gsym == NULL) | |
386 | index = 0; | |
387 | else if (dynamic) | |
388 | index = this->u_.gsym->dynsym_index(); | |
389 | else | |
390 | index = this->u_.gsym->symtab_index(); | |
391 | break; | |
392 | ||
393 | case SECTION_CODE: | |
394 | if (dynamic) | |
395 | index = this->u_.os->dynsym_index(); | |
396 | else | |
397 | index = this->u_.os->symtab_index(); | |
398 | break; | |
399 | ||
400 | default: | |
401 | if (dynamic) | |
402 | { | |
403 | // FIXME: It seems that some targets may need to generate | |
404 | // dynamic relocations against local symbols for some | |
405 | // reasons. This will have to be addressed at some point. | |
406 | abort(); | |
407 | } | |
408 | else | |
409 | index = this->u_.object->symtab_index(this->local_sym_index_); | |
410 | break; | |
411 | } | |
412 | assert(index != -1U); | |
413 | return index; | |
414 | } | |
415 | ||
416 | // Write out the offset and info fields of a Rel or Rela relocation | |
417 | // entry. | |
418 | ||
419 | template<bool dynamic, int size, bool big_endian> | |
420 | template<typename Write_rel> | |
421 | void | |
422 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write_rel( | |
423 | Write_rel* wr) const | |
424 | { | |
425 | wr->put_r_offset(this->address_); | |
426 | wr->put_r_info(elfcpp::elf_r_info<size>(this->get_symbol_index(), | |
427 | this->type_)); | |
428 | } | |
429 | ||
430 | // Write out a Rel relocation. | |
431 | ||
432 | template<bool dynamic, int size, bool big_endian> | |
433 | void | |
434 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write( | |
435 | unsigned char* pov) const | |
436 | { | |
437 | elfcpp::Rel_write<size, big_endian> orel(pov); | |
438 | this->write_rel(&orel); | |
439 | } | |
440 | ||
441 | // Write out a Rela relocation. | |
442 | ||
443 | template<bool dynamic, int size, bool big_endian> | |
444 | void | |
445 | Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>::write( | |
446 | unsigned char* pov) const | |
447 | { | |
448 | elfcpp::Rela_write<size, big_endian> orel(pov); | |
449 | this->rel_.write_rel(&orel); | |
450 | orel.put_r_addend(this->addend_); | |
451 | } | |
452 | ||
453 | // Output_data_reloc_base methods. | |
454 | ||
455 | // Write out relocation data. | |
456 | ||
457 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
458 | void | |
459 | Output_data_reloc_base<sh_type, dynamic, size, big_endian>::do_write( | |
460 | Output_file* of) | |
461 | { | |
462 | const off_t off = this->offset(); | |
463 | const off_t oview_size = this->data_size(); | |
464 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
465 | ||
466 | unsigned char* pov = oview; | |
467 | for (typename Relocs::const_iterator p = this->relocs_.begin(); | |
468 | p != this->relocs_.end(); | |
469 | ++p) | |
470 | { | |
471 | p->write(pov); | |
472 | pov += reloc_size; | |
473 | } | |
474 | ||
475 | assert(pov - oview == oview_size); | |
476 | ||
477 | of->write_output_view(off, oview_size, oview); | |
478 | ||
479 | // We no longer need the relocation entries. | |
480 | this->relocs_.clear(); | |
481 | } | |
482 | ||
dbe717ef | 483 | // Output_data_got::Got_entry methods. |
ead1e424 ILT |
484 | |
485 | // Write out the entry. | |
486 | ||
487 | template<int size, bool big_endian> | |
488 | void | |
dbe717ef | 489 | Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) |
ead1e424 ILT |
490 | const |
491 | { | |
492 | Valtype val = 0; | |
493 | ||
494 | switch (this->local_sym_index_) | |
495 | { | |
496 | case GSYM_CODE: | |
497 | { | |
498 | Symbol* gsym = this->u_.gsym; | |
499 | ||
500 | // If the symbol is resolved locally, we need to write out its | |
501 | // value. Otherwise we just write zero. The target code is | |
502 | // responsible for creating a relocation entry to fill in the | |
503 | // value at runtime. | |
504 | if (gsym->is_resolved_locally()) | |
505 | { | |
506 | Sized_symbol<size>* sgsym; | |
507 | // This cast is a bit ugly. We don't want to put a | |
508 | // virtual method in Symbol, because we want Symbol to be | |
509 | // as small as possible. | |
510 | sgsym = static_cast<Sized_symbol<size>*>(gsym); | |
511 | val = sgsym->value(); | |
512 | } | |
513 | } | |
514 | break; | |
515 | ||
516 | case CONSTANT_CODE: | |
517 | val = this->u_.constant; | |
518 | break; | |
519 | ||
520 | default: | |
521 | abort(); | |
522 | } | |
523 | ||
524 | Valtype* povv = reinterpret_cast<Valtype*>(pov); | |
f6ce93d6 | 525 | elfcpp::Swap<size, big_endian>::writeval(povv, val); |
ead1e424 ILT |
526 | } |
527 | ||
dbe717ef | 528 | // Output_data_got methods. |
ead1e424 | 529 | |
dbe717ef ILT |
530 | // Add an entry for a global symbol to the GOT. This returns true if |
531 | // this is a new GOT entry, false if the symbol already had a GOT | |
532 | // entry. | |
533 | ||
534 | template<int size, bool big_endian> | |
535 | bool | |
536 | Output_data_got<size, big_endian>::add_global(Symbol* gsym) | |
ead1e424 | 537 | { |
dbe717ef ILT |
538 | if (gsym->has_got_offset()) |
539 | return false; | |
ead1e424 | 540 | |
dbe717ef ILT |
541 | this->entries_.push_back(Got_entry(gsym)); |
542 | this->set_got_size(); | |
543 | gsym->set_got_offset(this->last_got_offset()); | |
544 | return true; | |
545 | } | |
ead1e424 ILT |
546 | |
547 | // Write out the GOT. | |
548 | ||
549 | template<int size, bool big_endian> | |
550 | void | |
dbe717ef | 551 | Output_data_got<size, big_endian>::do_write(Output_file* of) |
ead1e424 ILT |
552 | { |
553 | const int add = size / 8; | |
554 | ||
555 | const off_t off = this->offset(); | |
c06b7b0b | 556 | const off_t oview_size = this->data_size(); |
ead1e424 ILT |
557 | unsigned char* const oview = of->get_output_view(off, oview_size); |
558 | ||
559 | unsigned char* pov = oview; | |
560 | for (typename Got_entries::const_iterator p = this->entries_.begin(); | |
561 | p != this->entries_.end(); | |
562 | ++p) | |
563 | { | |
564 | p->write(pov); | |
565 | pov += add; | |
566 | } | |
567 | ||
c06b7b0b ILT |
568 | assert(pov - oview == oview_size); |
569 | ||
ead1e424 ILT |
570 | of->write_output_view(off, oview_size, oview); |
571 | ||
572 | // We no longer need the GOT entries. | |
573 | this->entries_.clear(); | |
574 | } | |
575 | ||
576 | // Output_section::Input_section methods. | |
577 | ||
578 | // Return the data size. For an input section we store the size here. | |
579 | // For an Output_section_data, we have to ask it for the size. | |
580 | ||
581 | off_t | |
582 | Output_section::Input_section::data_size() const | |
583 | { | |
584 | if (this->is_input_section()) | |
585 | return this->data_size_; | |
586 | else | |
587 | return this->u_.posd->data_size(); | |
588 | } | |
589 | ||
590 | // Set the address and file offset. | |
591 | ||
592 | void | |
593 | Output_section::Input_section::set_address(uint64_t addr, off_t off, | |
594 | off_t secoff) | |
595 | { | |
596 | if (this->is_input_section()) | |
597 | this->u_.object->set_section_offset(this->shndx_, off - secoff); | |
598 | else | |
599 | this->u_.posd->set_address(addr, off); | |
600 | } | |
601 | ||
602 | // Write out the data. We don't have to do anything for an input | |
603 | // section--they are handled via Object::relocate--but this is where | |
604 | // we write out the data for an Output_section_data. | |
605 | ||
606 | void | |
607 | Output_section::Input_section::write(Output_file* of) | |
608 | { | |
609 | if (!this->is_input_section()) | |
610 | this->u_.posd->write(of); | |
611 | } | |
612 | ||
a2fb1b05 ILT |
613 | // Output_section methods. |
614 | ||
615 | // Construct an Output_section. NAME will point into a Stringpool. | |
616 | ||
617 | Output_section::Output_section(const char* name, elfcpp::Elf_Word type, | |
ead1e424 | 618 | elfcpp::Elf_Xword flags, bool may_add_data) |
a2fb1b05 | 619 | : name_(name), |
a2fb1b05 ILT |
620 | addralign_(0), |
621 | entsize_(0), | |
a2fb1b05 ILT |
622 | link_(0), |
623 | info_(0), | |
624 | type_(type), | |
61ba1cf9 | 625 | flags_(flags), |
ead1e424 | 626 | out_shndx_(0), |
c06b7b0b ILT |
627 | symtab_index_(0), |
628 | dynsym_index_(0), | |
ead1e424 ILT |
629 | input_sections_(), |
630 | first_input_offset_(0), | |
631 | may_add_data_(may_add_data) | |
a2fb1b05 ILT |
632 | { |
633 | } | |
634 | ||
54dc6425 ILT |
635 | Output_section::~Output_section() |
636 | { | |
637 | } | |
638 | ||
ead1e424 ILT |
639 | // Add the input section SHNDX, with header SHDR, named SECNAME, in |
640 | // OBJECT, to the Output_section. Return the offset of the input | |
641 | // section within the output section. We don't always keep track of | |
a2fb1b05 ILT |
642 | // input sections for an Output_section. Instead, each Object keeps |
643 | // track of the Output_section for each of its input sections. | |
644 | ||
645 | template<int size, bool big_endian> | |
646 | off_t | |
f6ce93d6 | 647 | Output_section::add_input_section(Relobj* object, unsigned int shndx, |
ead1e424 | 648 | const char* secname, |
a2fb1b05 ILT |
649 | const elfcpp::Shdr<size, big_endian>& shdr) |
650 | { | |
ead1e424 ILT |
651 | assert(this->may_add_data_); |
652 | ||
a2fb1b05 ILT |
653 | elfcpp::Elf_Xword addralign = shdr.get_sh_addralign(); |
654 | if ((addralign & (addralign - 1)) != 0) | |
655 | { | |
656 | fprintf(stderr, _("%s: %s: invalid alignment %lu for section \"%s\"\n"), | |
657 | program_name, object->name().c_str(), | |
658 | static_cast<unsigned long>(addralign), secname); | |
659 | gold_exit(false); | |
660 | } | |
a2fb1b05 ILT |
661 | |
662 | if (addralign > this->addralign_) | |
663 | this->addralign_ = addralign; | |
664 | ||
75f65a3e | 665 | off_t ssize = this->data_size(); |
ead1e424 ILT |
666 | ssize = align_address(ssize, addralign); |
667 | this->set_data_size(ssize + shdr.get_sh_size()); | |
a2fb1b05 | 668 | |
ead1e424 ILT |
669 | // We need to keep track of this section if we are already keeping |
670 | // track of sections, or if we are relaxing. FIXME: Add test for | |
671 | // relaxing. | |
672 | if (! this->input_sections_.empty()) | |
673 | this->input_sections_.push_back(Input_section(object, shndx, | |
674 | shdr.get_sh_size(), | |
675 | addralign)); | |
54dc6425 | 676 | |
61ba1cf9 ILT |
677 | return ssize; |
678 | } | |
679 | ||
ead1e424 ILT |
680 | // Add arbitrary data to an output section. |
681 | ||
682 | void | |
683 | Output_section::add_output_section_data(Output_section_data* posd) | |
684 | { | |
c06b7b0b ILT |
685 | assert(this->may_add_data_); |
686 | ||
ead1e424 ILT |
687 | if (this->input_sections_.empty()) |
688 | this->first_input_offset_ = this->data_size(); | |
c06b7b0b | 689 | |
ead1e424 | 690 | this->input_sections_.push_back(Input_section(posd)); |
c06b7b0b | 691 | |
ead1e424 ILT |
692 | uint64_t addralign = posd->addralign(); |
693 | if (addralign > this->addralign_) | |
694 | this->addralign_ = addralign; | |
c06b7b0b | 695 | |
ead1e424 ILT |
696 | posd->set_output_section(this); |
697 | } | |
698 | ||
699 | // Set the address of an Output_section. This is where we handle | |
700 | // setting the addresses of any Output_section_data objects. | |
701 | ||
702 | void | |
703 | Output_section::do_set_address(uint64_t address, off_t startoff) | |
704 | { | |
705 | if (this->input_sections_.empty()) | |
706 | return; | |
707 | ||
708 | off_t off = startoff + this->first_input_offset_; | |
709 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
710 | p != this->input_sections_.end(); | |
711 | ++p) | |
712 | { | |
713 | off = align_address(off, p->addralign()); | |
714 | p->set_address(address + (off - startoff), off, startoff); | |
715 | off += p->data_size(); | |
716 | } | |
717 | ||
718 | this->set_data_size(off - startoff); | |
719 | } | |
720 | ||
61ba1cf9 ILT |
721 | // Write the section header to *OSHDR. |
722 | ||
723 | template<int size, bool big_endian> | |
724 | void | |
725 | Output_section::write_header(const Stringpool* secnamepool, | |
726 | elfcpp::Shdr_write<size, big_endian>* oshdr) const | |
727 | { | |
728 | oshdr->put_sh_name(secnamepool->get_offset(this->name_)); | |
729 | oshdr->put_sh_type(this->type_); | |
730 | oshdr->put_sh_flags(this->flags_); | |
731 | oshdr->put_sh_addr(this->address()); | |
732 | oshdr->put_sh_offset(this->offset()); | |
733 | oshdr->put_sh_size(this->data_size()); | |
734 | oshdr->put_sh_link(this->link_); | |
735 | oshdr->put_sh_info(this->info_); | |
736 | oshdr->put_sh_addralign(this->addralign_); | |
737 | oshdr->put_sh_entsize(this->entsize_); | |
a2fb1b05 ILT |
738 | } |
739 | ||
ead1e424 ILT |
740 | // Write out the data. For input sections the data is written out by |
741 | // Object::relocate, but we have to handle Output_section_data objects | |
742 | // here. | |
743 | ||
744 | void | |
745 | Output_section::do_write(Output_file* of) | |
746 | { | |
747 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
748 | p != this->input_sections_.end(); | |
749 | ++p) | |
750 | p->write(of); | |
751 | } | |
752 | ||
75f65a3e ILT |
753 | // Output_section_strtab methods. |
754 | ||
755 | Output_section_strtab::Output_section_strtab(const char* name, | |
ead1e424 ILT |
756 | Stringpool* contents) |
757 | : Output_section(name, elfcpp::SHT_STRTAB, 0, false), | |
75f65a3e ILT |
758 | contents_(contents) |
759 | { | |
61ba1cf9 | 760 | this->set_data_size(contents->get_strtab_size()); |
75f65a3e ILT |
761 | } |
762 | ||
763 | void | |
61ba1cf9 | 764 | Output_section_strtab::do_write(Output_file* of) |
75f65a3e | 765 | { |
61ba1cf9 | 766 | this->contents_->write(of, this->offset()); |
75f65a3e ILT |
767 | } |
768 | ||
a2fb1b05 ILT |
769 | // Output segment methods. |
770 | ||
771 | Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags) | |
54dc6425 | 772 | : output_data_(), |
75f65a3e | 773 | output_bss_(), |
a2fb1b05 ILT |
774 | vaddr_(0), |
775 | paddr_(0), | |
776 | memsz_(0), | |
777 | align_(0), | |
778 | offset_(0), | |
779 | filesz_(0), | |
780 | type_(type), | |
ead1e424 ILT |
781 | flags_(flags), |
782 | is_align_known_(false) | |
a2fb1b05 ILT |
783 | { |
784 | } | |
785 | ||
786 | // Add an Output_section to an Output_segment. | |
787 | ||
788 | void | |
75f65a3e | 789 | Output_segment::add_output_section(Output_section* os, |
dbe717ef ILT |
790 | elfcpp::Elf_Word seg_flags, |
791 | bool front) | |
a2fb1b05 | 792 | { |
75f65a3e | 793 | assert((os->flags() & elfcpp::SHF_ALLOC) != 0); |
ead1e424 | 794 | assert(!this->is_align_known_); |
75f65a3e | 795 | |
ead1e424 | 796 | // Update the segment flags. |
75f65a3e | 797 | this->flags_ |= seg_flags; |
75f65a3e ILT |
798 | |
799 | Output_segment::Output_data_list* pdl; | |
800 | if (os->type() == elfcpp::SHT_NOBITS) | |
801 | pdl = &this->output_bss_; | |
802 | else | |
803 | pdl = &this->output_data_; | |
54dc6425 | 804 | |
a2fb1b05 ILT |
805 | // So that PT_NOTE segments will work correctly, we need to ensure |
806 | // that all SHT_NOTE sections are adjacent. This will normally | |
807 | // happen automatically, because all the SHT_NOTE input sections | |
808 | // will wind up in the same output section. However, it is possible | |
809 | // for multiple SHT_NOTE input sections to have different section | |
810 | // flags, and thus be in different output sections, but for the | |
811 | // different section flags to map into the same segment flags and | |
812 | // thus the same output segment. | |
54dc6425 ILT |
813 | |
814 | // Note that while there may be many input sections in an output | |
815 | // section, there are normally only a few output sections in an | |
816 | // output segment. This loop is expected to be fast. | |
817 | ||
61ba1cf9 | 818 | if (os->type() == elfcpp::SHT_NOTE && !pdl->empty()) |
a2fb1b05 | 819 | { |
75f65a3e ILT |
820 | Layout::Data_list::iterator p = pdl->end(); |
821 | do | |
54dc6425 | 822 | { |
75f65a3e | 823 | --p; |
54dc6425 ILT |
824 | if ((*p)->is_section_type(elfcpp::SHT_NOTE)) |
825 | { | |
dbe717ef | 826 | // We don't worry about the FRONT parameter. |
54dc6425 | 827 | ++p; |
75f65a3e | 828 | pdl->insert(p, os); |
54dc6425 ILT |
829 | return; |
830 | } | |
831 | } | |
75f65a3e | 832 | while (p != pdl->begin()); |
54dc6425 ILT |
833 | } |
834 | ||
835 | // Similarly, so that PT_TLS segments will work, we need to group | |
75f65a3e ILT |
836 | // SHF_TLS sections. An SHF_TLS/SHT_NOBITS section is a special |
837 | // case: we group the SHF_TLS/SHT_NOBITS sections right after the | |
838 | // SHF_TLS/SHT_PROGBITS sections. This lets us set up PT_TLS | |
839 | // correctly. | |
61ba1cf9 | 840 | if ((os->flags() & elfcpp::SHF_TLS) != 0 && !this->output_data_.empty()) |
54dc6425 | 841 | { |
75f65a3e ILT |
842 | pdl = &this->output_data_; |
843 | bool nobits = os->type() == elfcpp::SHT_NOBITS; | |
ead1e424 | 844 | bool sawtls = false; |
75f65a3e ILT |
845 | Layout::Data_list::iterator p = pdl->end(); |
846 | do | |
a2fb1b05 | 847 | { |
75f65a3e | 848 | --p; |
ead1e424 ILT |
849 | bool insert; |
850 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
851 | { | |
852 | sawtls = true; | |
853 | // Put a NOBITS section after the first TLS section. | |
854 | // But a PROGBITS section after the first TLS/PROGBITS | |
855 | // section. | |
856 | insert = nobits || !(*p)->is_section_type(elfcpp::SHT_NOBITS); | |
857 | } | |
858 | else | |
859 | { | |
860 | // If we've gone past the TLS sections, but we've seen a | |
861 | // TLS section, then we need to insert this section now. | |
862 | insert = sawtls; | |
863 | } | |
864 | ||
865 | if (insert) | |
a2fb1b05 | 866 | { |
dbe717ef | 867 | // We don't worry about the FRONT parameter. |
a2fb1b05 | 868 | ++p; |
75f65a3e | 869 | pdl->insert(p, os); |
a2fb1b05 ILT |
870 | return; |
871 | } | |
872 | } | |
75f65a3e | 873 | while (p != pdl->begin()); |
ead1e424 | 874 | |
dbe717ef ILT |
875 | // There are no TLS sections yet; put this one at the requested |
876 | // location in the section list. | |
a2fb1b05 ILT |
877 | } |
878 | ||
dbe717ef ILT |
879 | if (front) |
880 | pdl->push_front(os); | |
881 | else | |
882 | pdl->push_back(os); | |
75f65a3e ILT |
883 | } |
884 | ||
885 | // Add an Output_data (which is not an Output_section) to the start of | |
886 | // a segment. | |
887 | ||
888 | void | |
889 | Output_segment::add_initial_output_data(Output_data* od) | |
890 | { | |
ead1e424 | 891 | assert(!this->is_align_known_); |
75f65a3e ILT |
892 | this->output_data_.push_front(od); |
893 | } | |
894 | ||
895 | // Return the maximum alignment of the Output_data in Output_segment. | |
ead1e424 | 896 | // Once we compute this, we prohibit new sections from being added. |
75f65a3e ILT |
897 | |
898 | uint64_t | |
ead1e424 | 899 | Output_segment::addralign() |
75f65a3e | 900 | { |
ead1e424 ILT |
901 | if (!this->is_align_known_) |
902 | { | |
903 | uint64_t addralign; | |
904 | ||
905 | addralign = Output_segment::maximum_alignment(&this->output_data_); | |
906 | if (addralign > this->align_) | |
907 | this->align_ = addralign; | |
908 | ||
909 | addralign = Output_segment::maximum_alignment(&this->output_bss_); | |
910 | if (addralign > this->align_) | |
911 | this->align_ = addralign; | |
912 | ||
913 | this->is_align_known_ = true; | |
914 | } | |
915 | ||
75f65a3e ILT |
916 | return this->align_; |
917 | } | |
918 | ||
ead1e424 ILT |
919 | // Return the maximum alignment of a list of Output_data. |
920 | ||
921 | uint64_t | |
922 | Output_segment::maximum_alignment(const Output_data_list* pdl) | |
923 | { | |
924 | uint64_t ret = 0; | |
925 | for (Output_data_list::const_iterator p = pdl->begin(); | |
926 | p != pdl->end(); | |
927 | ++p) | |
928 | { | |
929 | uint64_t addralign = (*p)->addralign(); | |
930 | if (addralign > ret) | |
931 | ret = addralign; | |
932 | } | |
933 | return ret; | |
934 | } | |
935 | ||
75f65a3e | 936 | // Set the section addresses for an Output_segment. ADDR is the |
ead1e424 ILT |
937 | // address and *POFF is the file offset. Set the section indexes |
938 | // starting with *PSHNDX. Return the address of the immediately | |
939 | // following segment. Update *POFF and *PSHNDX. | |
75f65a3e ILT |
940 | |
941 | uint64_t | |
ead1e424 ILT |
942 | Output_segment::set_section_addresses(uint64_t addr, off_t* poff, |
943 | unsigned int* pshndx) | |
75f65a3e ILT |
944 | { |
945 | assert(this->type_ == elfcpp::PT_LOAD); | |
946 | ||
947 | this->vaddr_ = addr; | |
948 | this->paddr_ = addr; | |
949 | ||
950 | off_t orig_off = *poff; | |
951 | this->offset_ = orig_off; | |
952 | ||
ead1e424 ILT |
953 | *poff = align_address(*poff, this->addralign()); |
954 | ||
955 | addr = this->set_section_list_addresses(&this->output_data_, addr, poff, | |
956 | pshndx); | |
75f65a3e ILT |
957 | this->filesz_ = *poff - orig_off; |
958 | ||
959 | off_t off = *poff; | |
960 | ||
61ba1cf9 | 961 | uint64_t ret = this->set_section_list_addresses(&this->output_bss_, addr, |
ead1e424 | 962 | poff, pshndx); |
75f65a3e ILT |
963 | this->memsz_ = *poff - orig_off; |
964 | ||
965 | // Ignore the file offset adjustments made by the BSS Output_data | |
966 | // objects. | |
967 | *poff = off; | |
61ba1cf9 ILT |
968 | |
969 | return ret; | |
75f65a3e ILT |
970 | } |
971 | ||
972 | // Set the addresses in a list of Output_data structures. | |
973 | ||
974 | uint64_t | |
975 | Output_segment::set_section_list_addresses(Output_data_list* pdl, | |
ead1e424 ILT |
976 | uint64_t addr, off_t* poff, |
977 | unsigned int* pshndx) | |
75f65a3e | 978 | { |
ead1e424 | 979 | off_t startoff = *poff; |
75f65a3e | 980 | |
ead1e424 | 981 | off_t off = startoff; |
75f65a3e ILT |
982 | for (Output_data_list::iterator p = pdl->begin(); |
983 | p != pdl->end(); | |
984 | ++p) | |
985 | { | |
ead1e424 ILT |
986 | off = align_address(off, (*p)->addralign()); |
987 | (*p)->set_address(addr + (off - startoff), off); | |
988 | ||
989 | // Unless this is a PT_TLS segment, we want to ignore the size | |
990 | // of a SHF_TLS/SHT_NOBITS section. Such a section does not | |
991 | // affect the size of a PT_LOAD segment. | |
992 | if (this->type_ == elfcpp::PT_TLS | |
993 | || !(*p)->is_section_flag_set(elfcpp::SHF_TLS) | |
994 | || !(*p)->is_section_type(elfcpp::SHT_NOBITS)) | |
995 | off += (*p)->data_size(); | |
75f65a3e | 996 | |
ead1e424 ILT |
997 | if ((*p)->is_section()) |
998 | { | |
999 | (*p)->set_out_shndx(*pshndx); | |
1000 | ++*pshndx; | |
1001 | } | |
75f65a3e ILT |
1002 | } |
1003 | ||
1004 | *poff = off; | |
ead1e424 | 1005 | return addr + (off - startoff); |
75f65a3e ILT |
1006 | } |
1007 | ||
1008 | // For a non-PT_LOAD segment, set the offset from the sections, if | |
1009 | // any. | |
1010 | ||
1011 | void | |
1012 | Output_segment::set_offset() | |
1013 | { | |
1014 | assert(this->type_ != elfcpp::PT_LOAD); | |
1015 | ||
1016 | if (this->output_data_.empty() && this->output_bss_.empty()) | |
1017 | { | |
1018 | this->vaddr_ = 0; | |
1019 | this->paddr_ = 0; | |
1020 | this->memsz_ = 0; | |
1021 | this->align_ = 0; | |
1022 | this->offset_ = 0; | |
1023 | this->filesz_ = 0; | |
1024 | return; | |
1025 | } | |
1026 | ||
1027 | const Output_data* first; | |
1028 | if (this->output_data_.empty()) | |
1029 | first = this->output_bss_.front(); | |
1030 | else | |
1031 | first = this->output_data_.front(); | |
1032 | this->vaddr_ = first->address(); | |
1033 | this->paddr_ = this->vaddr_; | |
1034 | this->offset_ = first->offset(); | |
1035 | ||
1036 | if (this->output_data_.empty()) | |
1037 | this->filesz_ = 0; | |
1038 | else | |
1039 | { | |
1040 | const Output_data* last_data = this->output_data_.back(); | |
1041 | this->filesz_ = (last_data->address() | |
1042 | + last_data->data_size() | |
1043 | - this->vaddr_); | |
1044 | } | |
1045 | ||
1046 | const Output_data* last; | |
1047 | if (this->output_bss_.empty()) | |
1048 | last = this->output_data_.back(); | |
1049 | else | |
1050 | last = this->output_bss_.back(); | |
1051 | this->memsz_ = (last->address() | |
1052 | + last->data_size() | |
1053 | - this->vaddr_); | |
75f65a3e ILT |
1054 | } |
1055 | ||
1056 | // Return the number of Output_sections in an Output_segment. | |
1057 | ||
1058 | unsigned int | |
1059 | Output_segment::output_section_count() const | |
1060 | { | |
1061 | return (this->output_section_count_list(&this->output_data_) | |
1062 | + this->output_section_count_list(&this->output_bss_)); | |
1063 | } | |
1064 | ||
1065 | // Return the number of Output_sections in an Output_data_list. | |
1066 | ||
1067 | unsigned int | |
1068 | Output_segment::output_section_count_list(const Output_data_list* pdl) const | |
1069 | { | |
1070 | unsigned int count = 0; | |
1071 | for (Output_data_list::const_iterator p = pdl->begin(); | |
1072 | p != pdl->end(); | |
1073 | ++p) | |
1074 | { | |
1075 | if ((*p)->is_section()) | |
1076 | ++count; | |
1077 | } | |
1078 | return count; | |
a2fb1b05 ILT |
1079 | } |
1080 | ||
61ba1cf9 ILT |
1081 | // Write the segment data into *OPHDR. |
1082 | ||
1083 | template<int size, bool big_endian> | |
1084 | void | |
ead1e424 | 1085 | Output_segment::write_header(elfcpp::Phdr_write<size, big_endian>* ophdr) |
61ba1cf9 ILT |
1086 | { |
1087 | ophdr->put_p_type(this->type_); | |
1088 | ophdr->put_p_offset(this->offset_); | |
1089 | ophdr->put_p_vaddr(this->vaddr_); | |
1090 | ophdr->put_p_paddr(this->paddr_); | |
1091 | ophdr->put_p_filesz(this->filesz_); | |
1092 | ophdr->put_p_memsz(this->memsz_); | |
1093 | ophdr->put_p_flags(this->flags_); | |
ead1e424 | 1094 | ophdr->put_p_align(this->addralign()); |
61ba1cf9 ILT |
1095 | } |
1096 | ||
1097 | // Write the section headers into V. | |
1098 | ||
1099 | template<int size, bool big_endian> | |
1100 | unsigned char* | |
1101 | Output_segment::write_section_headers(const Stringpool* secnamepool, | |
ead1e424 ILT |
1102 | unsigned char* v, |
1103 | unsigned int *pshndx | |
5482377d ILT |
1104 | ACCEPT_SIZE_ENDIAN) const |
1105 | { | |
ead1e424 ILT |
1106 | // Every section that is attached to a segment must be attached to a |
1107 | // PT_LOAD segment, so we only write out section headers for PT_LOAD | |
1108 | // segments. | |
1109 | if (this->type_ != elfcpp::PT_LOAD) | |
1110 | return v; | |
1111 | ||
593f47df ILT |
1112 | v = this->write_section_headers_list |
1113 | SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
1114 | secnamepool, &this->output_data_, v, pshndx | |
1115 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
1116 | v = this->write_section_headers_list | |
1117 | SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
1118 | secnamepool, &this->output_bss_, v, pshndx | |
1119 | SELECT_SIZE_ENDIAN(size, big_endian)); | |
61ba1cf9 ILT |
1120 | return v; |
1121 | } | |
1122 | ||
1123 | template<int size, bool big_endian> | |
1124 | unsigned char* | |
1125 | Output_segment::write_section_headers_list(const Stringpool* secnamepool, | |
1126 | const Output_data_list* pdl, | |
ead1e424 ILT |
1127 | unsigned char* v, |
1128 | unsigned int* pshndx | |
5482377d | 1129 | ACCEPT_SIZE_ENDIAN) const |
61ba1cf9 ILT |
1130 | { |
1131 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1132 | for (Output_data_list::const_iterator p = pdl->begin(); | |
1133 | p != pdl->end(); | |
1134 | ++p) | |
1135 | { | |
1136 | if ((*p)->is_section()) | |
1137 | { | |
5482377d | 1138 | const Output_section* ps = static_cast<const Output_section*>(*p); |
ead1e424 | 1139 | assert(*pshndx == ps->out_shndx()); |
61ba1cf9 ILT |
1140 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
1141 | ps->write_header(secnamepool, &oshdr); | |
1142 | v += shdr_size; | |
ead1e424 | 1143 | ++*pshndx; |
61ba1cf9 ILT |
1144 | } |
1145 | } | |
1146 | return v; | |
1147 | } | |
1148 | ||
a2fb1b05 ILT |
1149 | // Output_file methods. |
1150 | ||
61ba1cf9 ILT |
1151 | Output_file::Output_file(const General_options& options) |
1152 | : options_(options), | |
1153 | name_(options.output_file_name()), | |
1154 | o_(-1), | |
1155 | file_size_(0), | |
1156 | base_(NULL) | |
1157 | { | |
1158 | } | |
1159 | ||
1160 | // Open the output file. | |
1161 | ||
a2fb1b05 | 1162 | void |
61ba1cf9 | 1163 | Output_file::open(off_t file_size) |
a2fb1b05 | 1164 | { |
61ba1cf9 ILT |
1165 | this->file_size_ = file_size; |
1166 | ||
1167 | int mode = this->options_.is_relocatable() ? 0666 : 0777; | |
1168 | int o = ::open(this->name_, O_RDWR | O_CREAT | O_TRUNC, mode); | |
1169 | if (o < 0) | |
1170 | { | |
1171 | fprintf(stderr, _("%s: %s: open: %s\n"), | |
1172 | program_name, this->name_, strerror(errno)); | |
1173 | gold_exit(false); | |
1174 | } | |
1175 | this->o_ = o; | |
1176 | ||
1177 | // Write out one byte to make the file the right size. | |
1178 | if (::lseek(o, file_size - 1, SEEK_SET) < 0) | |
1179 | { | |
1180 | fprintf(stderr, _("%s: %s: lseek: %s\n"), | |
1181 | program_name, this->name_, strerror(errno)); | |
1182 | gold_exit(false); | |
1183 | } | |
1184 | char b = 0; | |
1185 | if (::write(o, &b, 1) != 1) | |
1186 | { | |
1187 | fprintf(stderr, _("%s: %s: write: %s\n"), | |
1188 | program_name, this->name_, strerror(errno)); | |
1189 | gold_exit(false); | |
1190 | } | |
1191 | ||
1192 | // Map the file into memory. | |
1193 | void* base = ::mmap(NULL, file_size, PROT_READ | PROT_WRITE, | |
1194 | MAP_SHARED, o, 0); | |
1195 | if (base == MAP_FAILED) | |
1196 | { | |
1197 | fprintf(stderr, _("%s: %s: mmap: %s\n"), | |
1198 | program_name, this->name_, strerror(errno)); | |
1199 | gold_exit(false); | |
1200 | } | |
1201 | this->base_ = static_cast<unsigned char*>(base); | |
1202 | } | |
1203 | ||
1204 | // Close the output file. | |
1205 | ||
1206 | void | |
1207 | Output_file::close() | |
1208 | { | |
1209 | if (::munmap(this->base_, this->file_size_) < 0) | |
1210 | { | |
1211 | fprintf(stderr, _("%s: %s: munmap: %s\n"), | |
1212 | program_name, this->name_, strerror(errno)); | |
1213 | gold_exit(false); | |
1214 | } | |
1215 | this->base_ = NULL; | |
1216 | ||
1217 | if (::close(this->o_) < 0) | |
1218 | { | |
1219 | fprintf(stderr, _("%s: %s: close: %s\n"), | |
1220 | program_name, this->name_, strerror(errno)); | |
1221 | gold_exit(false); | |
1222 | } | |
1223 | this->o_ = -1; | |
a2fb1b05 ILT |
1224 | } |
1225 | ||
1226 | // Instantiate the templates we need. We could use the configure | |
1227 | // script to restrict this to only the ones for implemented targets. | |
1228 | ||
1229 | template | |
1230 | off_t | |
1231 | Output_section::add_input_section<32, false>( | |
f6ce93d6 | 1232 | Relobj* object, |
ead1e424 | 1233 | unsigned int shndx, |
a2fb1b05 ILT |
1234 | const char* secname, |
1235 | const elfcpp::Shdr<32, false>& shdr); | |
1236 | ||
1237 | template | |
1238 | off_t | |
1239 | Output_section::add_input_section<32, true>( | |
f6ce93d6 | 1240 | Relobj* object, |
ead1e424 | 1241 | unsigned int shndx, |
a2fb1b05 ILT |
1242 | const char* secname, |
1243 | const elfcpp::Shdr<32, true>& shdr); | |
1244 | ||
1245 | template | |
1246 | off_t | |
1247 | Output_section::add_input_section<64, false>( | |
f6ce93d6 | 1248 | Relobj* object, |
ead1e424 | 1249 | unsigned int shndx, |
a2fb1b05 ILT |
1250 | const char* secname, |
1251 | const elfcpp::Shdr<64, false>& shdr); | |
1252 | ||
1253 | template | |
1254 | off_t | |
1255 | Output_section::add_input_section<64, true>( | |
f6ce93d6 | 1256 | Relobj* object, |
ead1e424 | 1257 | unsigned int shndx, |
a2fb1b05 ILT |
1258 | const char* secname, |
1259 | const elfcpp::Shdr<64, true>& shdr); | |
1260 | ||
c06b7b0b ILT |
1261 | template |
1262 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>; | |
1263 | ||
1264 | template | |
1265 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, true>; | |
1266 | ||
1267 | template | |
1268 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, false>; | |
1269 | ||
1270 | template | |
1271 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, true>; | |
1272 | ||
1273 | template | |
1274 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, false>; | |
1275 | ||
1276 | template | |
1277 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, true>; | |
1278 | ||
1279 | template | |
1280 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, false>; | |
1281 | ||
1282 | template | |
1283 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, true>; | |
1284 | ||
1285 | template | |
1286 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
1287 | ||
1288 | template | |
1289 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
1290 | ||
1291 | template | |
1292 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
1293 | ||
1294 | template | |
1295 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
1296 | ||
1297 | template | |
1298 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
1299 | ||
1300 | template | |
1301 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
1302 | ||
1303 | template | |
1304 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
1305 | ||
1306 | template | |
1307 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
1308 | ||
ead1e424 | 1309 | template |
dbe717ef | 1310 | class Output_data_got<32, false>; |
ead1e424 ILT |
1311 | |
1312 | template | |
dbe717ef | 1313 | class Output_data_got<32, true>; |
ead1e424 ILT |
1314 | |
1315 | template | |
dbe717ef | 1316 | class Output_data_got<64, false>; |
ead1e424 ILT |
1317 | |
1318 | template | |
dbe717ef | 1319 | class Output_data_got<64, true>; |
ead1e424 | 1320 | |
a2fb1b05 | 1321 | } // End namespace gold. |