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a2fb1b05 ILT |
1 | // output.cc -- manage the output file for gold |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
4 | // Written by Ian Lance Taylor <iant@google.com>. | |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
a2fb1b05 ILT |
23 | #include "gold.h" |
24 | ||
25 | #include <cstdlib> | |
61ba1cf9 ILT |
26 | #include <cerrno> |
27 | #include <fcntl.h> | |
28 | #include <unistd.h> | |
29 | #include <sys/mman.h> | |
4e9d8586 | 30 | #include <sys/stat.h> |
75f65a3e | 31 | #include <algorithm> |
5ffcaa86 | 32 | #include "libiberty.h" // for unlink_if_ordinary() |
a2fb1b05 | 33 | |
7e1edb90 | 34 | #include "parameters.h" |
9a0910c3 | 35 | #include "compressed_output.h" |
a2fb1b05 | 36 | #include "object.h" |
ead1e424 ILT |
37 | #include "symtab.h" |
38 | #include "reloc.h" | |
b8e6aad9 | 39 | #include "merge.h" |
a2fb1b05 ILT |
40 | #include "output.h" |
41 | ||
42 | namespace gold | |
43 | { | |
44 | ||
a3ad94ed ILT |
45 | // Output_data variables. |
46 | ||
27bc2bce | 47 | bool Output_data::allocated_sizes_are_fixed; |
a3ad94ed | 48 | |
a2fb1b05 ILT |
49 | // Output_data methods. |
50 | ||
51 | Output_data::~Output_data() | |
52 | { | |
53 | } | |
54 | ||
730cdc88 ILT |
55 | // Return the default alignment for the target size. |
56 | ||
57 | uint64_t | |
58 | Output_data::default_alignment() | |
59 | { | |
60 | return Output_data::default_alignment_for_size(parameters->get_size()); | |
61 | } | |
62 | ||
75f65a3e ILT |
63 | // Return the default alignment for a size--32 or 64. |
64 | ||
65 | uint64_t | |
730cdc88 | 66 | Output_data::default_alignment_for_size(int size) |
75f65a3e ILT |
67 | { |
68 | if (size == 32) | |
69 | return 4; | |
70 | else if (size == 64) | |
71 | return 8; | |
72 | else | |
a3ad94ed | 73 | gold_unreachable(); |
75f65a3e ILT |
74 | } |
75 | ||
75f65a3e ILT |
76 | // Output_section_header methods. This currently assumes that the |
77 | // segment and section lists are complete at construction time. | |
78 | ||
79 | Output_section_headers::Output_section_headers( | |
16649710 ILT |
80 | const Layout* layout, |
81 | const Layout::Segment_list* segment_list, | |
82 | const Layout::Section_list* unattached_section_list, | |
61ba1cf9 | 83 | const Stringpool* secnamepool) |
9025d29d | 84 | : layout_(layout), |
75f65a3e | 85 | segment_list_(segment_list), |
a3ad94ed | 86 | unattached_section_list_(unattached_section_list), |
61ba1cf9 | 87 | secnamepool_(secnamepool) |
75f65a3e | 88 | { |
61ba1cf9 ILT |
89 | // Count all the sections. Start with 1 for the null section. |
90 | off_t count = 1; | |
16649710 ILT |
91 | for (Layout::Segment_list::const_iterator p = segment_list->begin(); |
92 | p != segment_list->end(); | |
75f65a3e | 93 | ++p) |
ead1e424 ILT |
94 | if ((*p)->type() == elfcpp::PT_LOAD) |
95 | count += (*p)->output_section_count(); | |
16649710 | 96 | count += unattached_section_list->size(); |
75f65a3e | 97 | |
9025d29d | 98 | const int size = parameters->get_size(); |
75f65a3e ILT |
99 | int shdr_size; |
100 | if (size == 32) | |
101 | shdr_size = elfcpp::Elf_sizes<32>::shdr_size; | |
102 | else if (size == 64) | |
103 | shdr_size = elfcpp::Elf_sizes<64>::shdr_size; | |
104 | else | |
a3ad94ed | 105 | gold_unreachable(); |
75f65a3e ILT |
106 | |
107 | this->set_data_size(count * shdr_size); | |
108 | } | |
109 | ||
61ba1cf9 ILT |
110 | // Write out the section headers. |
111 | ||
75f65a3e | 112 | void |
61ba1cf9 | 113 | Output_section_headers::do_write(Output_file* of) |
a2fb1b05 | 114 | { |
9025d29d | 115 | if (parameters->get_size() == 32) |
61ba1cf9 | 116 | { |
9025d29d ILT |
117 | if (parameters->is_big_endian()) |
118 | { | |
119 | #ifdef HAVE_TARGET_32_BIG | |
120 | this->do_sized_write<32, true>(of); | |
121 | #else | |
122 | gold_unreachable(); | |
123 | #endif | |
124 | } | |
61ba1cf9 | 125 | else |
9025d29d ILT |
126 | { |
127 | #ifdef HAVE_TARGET_32_LITTLE | |
128 | this->do_sized_write<32, false>(of); | |
129 | #else | |
130 | gold_unreachable(); | |
131 | #endif | |
132 | } | |
61ba1cf9 | 133 | } |
9025d29d | 134 | else if (parameters->get_size() == 64) |
61ba1cf9 | 135 | { |
9025d29d ILT |
136 | if (parameters->is_big_endian()) |
137 | { | |
138 | #ifdef HAVE_TARGET_64_BIG | |
139 | this->do_sized_write<64, true>(of); | |
140 | #else | |
141 | gold_unreachable(); | |
142 | #endif | |
143 | } | |
61ba1cf9 | 144 | else |
9025d29d ILT |
145 | { |
146 | #ifdef HAVE_TARGET_64_LITTLE | |
147 | this->do_sized_write<64, false>(of); | |
148 | #else | |
149 | gold_unreachable(); | |
150 | #endif | |
151 | } | |
61ba1cf9 ILT |
152 | } |
153 | else | |
a3ad94ed | 154 | gold_unreachable(); |
61ba1cf9 ILT |
155 | } |
156 | ||
157 | template<int size, bool big_endian> | |
158 | void | |
159 | Output_section_headers::do_sized_write(Output_file* of) | |
160 | { | |
161 | off_t all_shdrs_size = this->data_size(); | |
162 | unsigned char* view = of->get_output_view(this->offset(), all_shdrs_size); | |
163 | ||
164 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
165 | unsigned char* v = view; | |
166 | ||
167 | { | |
168 | typename elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
169 | oshdr.put_sh_name(0); | |
170 | oshdr.put_sh_type(elfcpp::SHT_NULL); | |
171 | oshdr.put_sh_flags(0); | |
172 | oshdr.put_sh_addr(0); | |
173 | oshdr.put_sh_offset(0); | |
174 | oshdr.put_sh_size(0); | |
175 | oshdr.put_sh_link(0); | |
176 | oshdr.put_sh_info(0); | |
177 | oshdr.put_sh_addralign(0); | |
178 | oshdr.put_sh_entsize(0); | |
179 | } | |
180 | ||
181 | v += shdr_size; | |
182 | ||
ead1e424 | 183 | unsigned shndx = 1; |
16649710 ILT |
184 | for (Layout::Segment_list::const_iterator p = this->segment_list_->begin(); |
185 | p != this->segment_list_->end(); | |
61ba1cf9 | 186 | ++p) |
593f47df | 187 | v = (*p)->write_section_headers SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( |
16649710 | 188 | this->layout_, this->secnamepool_, v, &shndx |
ead1e424 | 189 | SELECT_SIZE_ENDIAN(size, big_endian)); |
a3ad94ed | 190 | for (Layout::Section_list::const_iterator p = |
16649710 ILT |
191 | this->unattached_section_list_->begin(); |
192 | p != this->unattached_section_list_->end(); | |
61ba1cf9 ILT |
193 | ++p) |
194 | { | |
a3ad94ed | 195 | gold_assert(shndx == (*p)->out_shndx()); |
61ba1cf9 | 196 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 197 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); |
61ba1cf9 | 198 | v += shdr_size; |
ead1e424 | 199 | ++shndx; |
61ba1cf9 ILT |
200 | } |
201 | ||
202 | of->write_output_view(this->offset(), all_shdrs_size, view); | |
a2fb1b05 ILT |
203 | } |
204 | ||
54dc6425 ILT |
205 | // Output_segment_header methods. |
206 | ||
61ba1cf9 | 207 | Output_segment_headers::Output_segment_headers( |
61ba1cf9 | 208 | const Layout::Segment_list& segment_list) |
9025d29d | 209 | : segment_list_(segment_list) |
61ba1cf9 | 210 | { |
9025d29d | 211 | const int size = parameters->get_size(); |
61ba1cf9 ILT |
212 | int phdr_size; |
213 | if (size == 32) | |
214 | phdr_size = elfcpp::Elf_sizes<32>::phdr_size; | |
215 | else if (size == 64) | |
216 | phdr_size = elfcpp::Elf_sizes<64>::phdr_size; | |
217 | else | |
a3ad94ed | 218 | gold_unreachable(); |
61ba1cf9 ILT |
219 | |
220 | this->set_data_size(segment_list.size() * phdr_size); | |
221 | } | |
222 | ||
54dc6425 | 223 | void |
61ba1cf9 | 224 | Output_segment_headers::do_write(Output_file* of) |
75f65a3e | 225 | { |
9025d29d | 226 | if (parameters->get_size() == 32) |
61ba1cf9 | 227 | { |
9025d29d ILT |
228 | if (parameters->is_big_endian()) |
229 | { | |
230 | #ifdef HAVE_TARGET_32_BIG | |
231 | this->do_sized_write<32, true>(of); | |
232 | #else | |
233 | gold_unreachable(); | |
234 | #endif | |
235 | } | |
61ba1cf9 | 236 | else |
9025d29d ILT |
237 | { |
238 | #ifdef HAVE_TARGET_32_LITTLE | |
61ba1cf9 | 239 | this->do_sized_write<32, false>(of); |
9025d29d ILT |
240 | #else |
241 | gold_unreachable(); | |
242 | #endif | |
243 | } | |
61ba1cf9 | 244 | } |
9025d29d | 245 | else if (parameters->get_size() == 64) |
61ba1cf9 | 246 | { |
9025d29d ILT |
247 | if (parameters->is_big_endian()) |
248 | { | |
249 | #ifdef HAVE_TARGET_64_BIG | |
250 | this->do_sized_write<64, true>(of); | |
251 | #else | |
252 | gold_unreachable(); | |
253 | #endif | |
254 | } | |
61ba1cf9 | 255 | else |
9025d29d ILT |
256 | { |
257 | #ifdef HAVE_TARGET_64_LITTLE | |
258 | this->do_sized_write<64, false>(of); | |
259 | #else | |
260 | gold_unreachable(); | |
261 | #endif | |
262 | } | |
61ba1cf9 ILT |
263 | } |
264 | else | |
a3ad94ed | 265 | gold_unreachable(); |
61ba1cf9 ILT |
266 | } |
267 | ||
268 | template<int size, bool big_endian> | |
269 | void | |
270 | Output_segment_headers::do_sized_write(Output_file* of) | |
271 | { | |
272 | const int phdr_size = elfcpp::Elf_sizes<size>::phdr_size; | |
273 | off_t all_phdrs_size = this->segment_list_.size() * phdr_size; | |
274 | unsigned char* view = of->get_output_view(this->offset(), | |
275 | all_phdrs_size); | |
276 | unsigned char* v = view; | |
277 | for (Layout::Segment_list::const_iterator p = this->segment_list_.begin(); | |
278 | p != this->segment_list_.end(); | |
279 | ++p) | |
280 | { | |
281 | elfcpp::Phdr_write<size, big_endian> ophdr(v); | |
282 | (*p)->write_header(&ophdr); | |
283 | v += phdr_size; | |
284 | } | |
285 | ||
286 | of->write_output_view(this->offset(), all_phdrs_size, view); | |
75f65a3e ILT |
287 | } |
288 | ||
289 | // Output_file_header methods. | |
290 | ||
9025d29d | 291 | Output_file_header::Output_file_header(const Target* target, |
75f65a3e ILT |
292 | const Symbol_table* symtab, |
293 | const Output_segment_headers* osh) | |
9025d29d | 294 | : target_(target), |
75f65a3e | 295 | symtab_(symtab), |
61ba1cf9 | 296 | segment_header_(osh), |
75f65a3e ILT |
297 | section_header_(NULL), |
298 | shstrtab_(NULL) | |
299 | { | |
9025d29d | 300 | const int size = parameters->get_size(); |
61ba1cf9 ILT |
301 | int ehdr_size; |
302 | if (size == 32) | |
303 | ehdr_size = elfcpp::Elf_sizes<32>::ehdr_size; | |
304 | else if (size == 64) | |
305 | ehdr_size = elfcpp::Elf_sizes<64>::ehdr_size; | |
306 | else | |
a3ad94ed | 307 | gold_unreachable(); |
61ba1cf9 ILT |
308 | |
309 | this->set_data_size(ehdr_size); | |
75f65a3e ILT |
310 | } |
311 | ||
312 | // Set the section table information for a file header. | |
313 | ||
314 | void | |
315 | Output_file_header::set_section_info(const Output_section_headers* shdrs, | |
316 | const Output_section* shstrtab) | |
317 | { | |
318 | this->section_header_ = shdrs; | |
319 | this->shstrtab_ = shstrtab; | |
320 | } | |
321 | ||
322 | // Write out the file header. | |
323 | ||
324 | void | |
61ba1cf9 | 325 | Output_file_header::do_write(Output_file* of) |
54dc6425 | 326 | { |
27bc2bce ILT |
327 | gold_assert(this->offset() == 0); |
328 | ||
9025d29d | 329 | if (parameters->get_size() == 32) |
61ba1cf9 | 330 | { |
9025d29d ILT |
331 | if (parameters->is_big_endian()) |
332 | { | |
333 | #ifdef HAVE_TARGET_32_BIG | |
334 | this->do_sized_write<32, true>(of); | |
335 | #else | |
336 | gold_unreachable(); | |
337 | #endif | |
338 | } | |
61ba1cf9 | 339 | else |
9025d29d ILT |
340 | { |
341 | #ifdef HAVE_TARGET_32_LITTLE | |
342 | this->do_sized_write<32, false>(of); | |
343 | #else | |
344 | gold_unreachable(); | |
345 | #endif | |
346 | } | |
61ba1cf9 | 347 | } |
9025d29d | 348 | else if (parameters->get_size() == 64) |
61ba1cf9 | 349 | { |
9025d29d ILT |
350 | if (parameters->is_big_endian()) |
351 | { | |
352 | #ifdef HAVE_TARGET_64_BIG | |
353 | this->do_sized_write<64, true>(of); | |
354 | #else | |
355 | gold_unreachable(); | |
356 | #endif | |
357 | } | |
61ba1cf9 | 358 | else |
9025d29d ILT |
359 | { |
360 | #ifdef HAVE_TARGET_64_LITTLE | |
361 | this->do_sized_write<64, false>(of); | |
362 | #else | |
363 | gold_unreachable(); | |
364 | #endif | |
365 | } | |
61ba1cf9 ILT |
366 | } |
367 | else | |
a3ad94ed | 368 | gold_unreachable(); |
61ba1cf9 ILT |
369 | } |
370 | ||
371 | // Write out the file header with appropriate size and endianess. | |
372 | ||
373 | template<int size, bool big_endian> | |
374 | void | |
375 | Output_file_header::do_sized_write(Output_file* of) | |
376 | { | |
a3ad94ed | 377 | gold_assert(this->offset() == 0); |
61ba1cf9 ILT |
378 | |
379 | int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size; | |
380 | unsigned char* view = of->get_output_view(0, ehdr_size); | |
381 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
382 | ||
383 | unsigned char e_ident[elfcpp::EI_NIDENT]; | |
384 | memset(e_ident, 0, elfcpp::EI_NIDENT); | |
385 | e_ident[elfcpp::EI_MAG0] = elfcpp::ELFMAG0; | |
386 | e_ident[elfcpp::EI_MAG1] = elfcpp::ELFMAG1; | |
387 | e_ident[elfcpp::EI_MAG2] = elfcpp::ELFMAG2; | |
388 | e_ident[elfcpp::EI_MAG3] = elfcpp::ELFMAG3; | |
389 | if (size == 32) | |
390 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS32; | |
391 | else if (size == 64) | |
392 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS64; | |
393 | else | |
a3ad94ed | 394 | gold_unreachable(); |
61ba1cf9 ILT |
395 | e_ident[elfcpp::EI_DATA] = (big_endian |
396 | ? elfcpp::ELFDATA2MSB | |
397 | : elfcpp::ELFDATA2LSB); | |
398 | e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT; | |
399 | // FIXME: Some targets may need to set EI_OSABI and EI_ABIVERSION. | |
400 | oehdr.put_e_ident(e_ident); | |
401 | ||
402 | elfcpp::ET e_type; | |
7e1edb90 | 403 | if (parameters->output_is_object()) |
61ba1cf9 | 404 | e_type = elfcpp::ET_REL; |
436ca963 ILT |
405 | else if (parameters->output_is_shared()) |
406 | e_type = elfcpp::ET_DYN; | |
61ba1cf9 ILT |
407 | else |
408 | e_type = elfcpp::ET_EXEC; | |
409 | oehdr.put_e_type(e_type); | |
410 | ||
411 | oehdr.put_e_machine(this->target_->machine_code()); | |
412 | oehdr.put_e_version(elfcpp::EV_CURRENT); | |
413 | ||
ead1e424 | 414 | // FIXME: Need to support -e, and target specific entry symbol. |
61ba1cf9 ILT |
415 | Symbol* sym = this->symtab_->lookup("_start"); |
416 | typename Sized_symbol<size>::Value_type v; | |
417 | if (sym == NULL) | |
418 | v = 0; | |
419 | else | |
420 | { | |
421 | Sized_symbol<size>* ssym; | |
593f47df | 422 | ssym = this->symtab_->get_sized_symbol SELECT_SIZE_NAME(size) ( |
5482377d | 423 | sym SELECT_SIZE(size)); |
61ba1cf9 ILT |
424 | v = ssym->value(); |
425 | } | |
426 | oehdr.put_e_entry(v); | |
427 | ||
428 | oehdr.put_e_phoff(this->segment_header_->offset()); | |
429 | oehdr.put_e_shoff(this->section_header_->offset()); | |
430 | ||
431 | // FIXME: The target needs to set the flags. | |
432 | oehdr.put_e_flags(0); | |
433 | ||
434 | oehdr.put_e_ehsize(elfcpp::Elf_sizes<size>::ehdr_size); | |
435 | oehdr.put_e_phentsize(elfcpp::Elf_sizes<size>::phdr_size); | |
436 | oehdr.put_e_phnum(this->segment_header_->data_size() | |
437 | / elfcpp::Elf_sizes<size>::phdr_size); | |
438 | oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size); | |
439 | oehdr.put_e_shnum(this->section_header_->data_size() | |
440 | / elfcpp::Elf_sizes<size>::shdr_size); | |
ead1e424 | 441 | oehdr.put_e_shstrndx(this->shstrtab_->out_shndx()); |
61ba1cf9 ILT |
442 | |
443 | of->write_output_view(0, ehdr_size, view); | |
54dc6425 ILT |
444 | } |
445 | ||
dbe717ef ILT |
446 | // Output_data_const methods. |
447 | ||
448 | void | |
a3ad94ed | 449 | Output_data_const::do_write(Output_file* of) |
dbe717ef | 450 | { |
a3ad94ed ILT |
451 | of->write(this->offset(), this->data_.data(), this->data_.size()); |
452 | } | |
453 | ||
454 | // Output_data_const_buffer methods. | |
455 | ||
456 | void | |
457 | Output_data_const_buffer::do_write(Output_file* of) | |
458 | { | |
459 | of->write(this->offset(), this->p_, this->data_size()); | |
dbe717ef ILT |
460 | } |
461 | ||
462 | // Output_section_data methods. | |
463 | ||
16649710 ILT |
464 | // Record the output section, and set the entry size and such. |
465 | ||
466 | void | |
467 | Output_section_data::set_output_section(Output_section* os) | |
468 | { | |
469 | gold_assert(this->output_section_ == NULL); | |
470 | this->output_section_ = os; | |
471 | this->do_adjust_output_section(os); | |
472 | } | |
473 | ||
474 | // Return the section index of the output section. | |
475 | ||
dbe717ef ILT |
476 | unsigned int |
477 | Output_section_data::do_out_shndx() const | |
478 | { | |
a3ad94ed | 479 | gold_assert(this->output_section_ != NULL); |
dbe717ef ILT |
480 | return this->output_section_->out_shndx(); |
481 | } | |
482 | ||
a3ad94ed ILT |
483 | // Output_data_strtab methods. |
484 | ||
27bc2bce | 485 | // Set the final data size. |
a3ad94ed ILT |
486 | |
487 | void | |
27bc2bce | 488 | Output_data_strtab::set_final_data_size() |
a3ad94ed ILT |
489 | { |
490 | this->strtab_->set_string_offsets(); | |
491 | this->set_data_size(this->strtab_->get_strtab_size()); | |
492 | } | |
493 | ||
494 | // Write out a string table. | |
495 | ||
496 | void | |
497 | Output_data_strtab::do_write(Output_file* of) | |
498 | { | |
499 | this->strtab_->write(of, this->offset()); | |
500 | } | |
501 | ||
c06b7b0b ILT |
502 | // Output_reloc methods. |
503 | ||
504 | // Get the symbol index of a relocation. | |
505 | ||
506 | template<bool dynamic, int size, bool big_endian> | |
507 | unsigned int | |
508 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_symbol_index() | |
509 | const | |
510 | { | |
511 | unsigned int index; | |
512 | switch (this->local_sym_index_) | |
513 | { | |
514 | case INVALID_CODE: | |
a3ad94ed | 515 | gold_unreachable(); |
c06b7b0b ILT |
516 | |
517 | case GSYM_CODE: | |
5a6f7e2d | 518 | if (this->u1_.gsym == NULL) |
c06b7b0b ILT |
519 | index = 0; |
520 | else if (dynamic) | |
5a6f7e2d | 521 | index = this->u1_.gsym->dynsym_index(); |
c06b7b0b | 522 | else |
5a6f7e2d | 523 | index = this->u1_.gsym->symtab_index(); |
c06b7b0b ILT |
524 | break; |
525 | ||
526 | case SECTION_CODE: | |
527 | if (dynamic) | |
5a6f7e2d | 528 | index = this->u1_.os->dynsym_index(); |
c06b7b0b | 529 | else |
5a6f7e2d | 530 | index = this->u1_.os->symtab_index(); |
c06b7b0b ILT |
531 | break; |
532 | ||
436ca963 ILT |
533 | case 0: |
534 | // Relocations without symbols use a symbol index of 0. | |
535 | index = 0; | |
536 | break; | |
537 | ||
c06b7b0b ILT |
538 | default: |
539 | if (dynamic) | |
540 | { | |
541 | // FIXME: It seems that some targets may need to generate | |
542 | // dynamic relocations against local symbols for some | |
543 | // reasons. This will have to be addressed at some point. | |
a3ad94ed | 544 | gold_unreachable(); |
c06b7b0b ILT |
545 | } |
546 | else | |
5a6f7e2d | 547 | index = this->u1_.relobj->symtab_index(this->local_sym_index_); |
c06b7b0b ILT |
548 | break; |
549 | } | |
a3ad94ed | 550 | gold_assert(index != -1U); |
c06b7b0b ILT |
551 | return index; |
552 | } | |
553 | ||
554 | // Write out the offset and info fields of a Rel or Rela relocation | |
555 | // entry. | |
556 | ||
557 | template<bool dynamic, int size, bool big_endian> | |
558 | template<typename Write_rel> | |
559 | void | |
560 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write_rel( | |
561 | Write_rel* wr) const | |
562 | { | |
a3ad94ed | 563 | Address address = this->address_; |
5a6f7e2d ILT |
564 | if (this->shndx_ != INVALID_CODE) |
565 | { | |
566 | off_t off; | |
567 | Output_section* os = this->u2_.relobj->output_section(this->shndx_, | |
568 | &off); | |
569 | gold_assert(os != NULL); | |
730cdc88 ILT |
570 | if (off != -1) |
571 | address += os->address() + off; | |
572 | else | |
573 | { | |
574 | address = os->output_address(this->u2_.relobj, this->shndx_, | |
575 | address); | |
576 | gold_assert(address != -1U); | |
577 | } | |
5a6f7e2d ILT |
578 | } |
579 | else if (this->u2_.od != NULL) | |
580 | address += this->u2_.od->address(); | |
a3ad94ed | 581 | wr->put_r_offset(address); |
c06b7b0b ILT |
582 | wr->put_r_info(elfcpp::elf_r_info<size>(this->get_symbol_index(), |
583 | this->type_)); | |
584 | } | |
585 | ||
586 | // Write out a Rel relocation. | |
587 | ||
588 | template<bool dynamic, int size, bool big_endian> | |
589 | void | |
590 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write( | |
591 | unsigned char* pov) const | |
592 | { | |
593 | elfcpp::Rel_write<size, big_endian> orel(pov); | |
594 | this->write_rel(&orel); | |
595 | } | |
596 | ||
597 | // Write out a Rela relocation. | |
598 | ||
599 | template<bool dynamic, int size, bool big_endian> | |
600 | void | |
601 | Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>::write( | |
602 | unsigned char* pov) const | |
603 | { | |
604 | elfcpp::Rela_write<size, big_endian> orel(pov); | |
605 | this->rel_.write_rel(&orel); | |
606 | orel.put_r_addend(this->addend_); | |
607 | } | |
608 | ||
609 | // Output_data_reloc_base methods. | |
610 | ||
16649710 ILT |
611 | // Adjust the output section. |
612 | ||
613 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
614 | void | |
615 | Output_data_reloc_base<sh_type, dynamic, size, big_endian> | |
616 | ::do_adjust_output_section(Output_section* os) | |
617 | { | |
618 | if (sh_type == elfcpp::SHT_REL) | |
619 | os->set_entsize(elfcpp::Elf_sizes<size>::rel_size); | |
620 | else if (sh_type == elfcpp::SHT_RELA) | |
621 | os->set_entsize(elfcpp::Elf_sizes<size>::rela_size); | |
622 | else | |
623 | gold_unreachable(); | |
624 | if (dynamic) | |
625 | os->set_should_link_to_dynsym(); | |
626 | else | |
627 | os->set_should_link_to_symtab(); | |
628 | } | |
629 | ||
c06b7b0b ILT |
630 | // Write out relocation data. |
631 | ||
632 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
633 | void | |
634 | Output_data_reloc_base<sh_type, dynamic, size, big_endian>::do_write( | |
635 | Output_file* of) | |
636 | { | |
637 | const off_t off = this->offset(); | |
638 | const off_t oview_size = this->data_size(); | |
639 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
640 | ||
641 | unsigned char* pov = oview; | |
642 | for (typename Relocs::const_iterator p = this->relocs_.begin(); | |
643 | p != this->relocs_.end(); | |
644 | ++p) | |
645 | { | |
646 | p->write(pov); | |
647 | pov += reloc_size; | |
648 | } | |
649 | ||
a3ad94ed | 650 | gold_assert(pov - oview == oview_size); |
c06b7b0b ILT |
651 | |
652 | of->write_output_view(off, oview_size, oview); | |
653 | ||
654 | // We no longer need the relocation entries. | |
655 | this->relocs_.clear(); | |
656 | } | |
657 | ||
dbe717ef | 658 | // Output_data_got::Got_entry methods. |
ead1e424 ILT |
659 | |
660 | // Write out the entry. | |
661 | ||
662 | template<int size, bool big_endian> | |
663 | void | |
7e1edb90 | 664 | Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const |
ead1e424 ILT |
665 | { |
666 | Valtype val = 0; | |
667 | ||
668 | switch (this->local_sym_index_) | |
669 | { | |
670 | case GSYM_CODE: | |
671 | { | |
672 | Symbol* gsym = this->u_.gsym; | |
673 | ||
674 | // If the symbol is resolved locally, we need to write out its | |
675 | // value. Otherwise we just write zero. The target code is | |
676 | // responsible for creating a relocation entry to fill in the | |
d61c6bd4 ILT |
677 | // value at runtime. For non-preemptible symbols in a shared |
678 | // library, the target will need to record whether or not the | |
679 | // value should be written (e.g., it may use a RELATIVE | |
680 | // relocation type). | |
681 | if (gsym->final_value_is_known() || gsym->needs_value_in_got()) | |
ead1e424 ILT |
682 | { |
683 | Sized_symbol<size>* sgsym; | |
684 | // This cast is a bit ugly. We don't want to put a | |
685 | // virtual method in Symbol, because we want Symbol to be | |
686 | // as small as possible. | |
687 | sgsym = static_cast<Sized_symbol<size>*>(gsym); | |
688 | val = sgsym->value(); | |
689 | } | |
690 | } | |
691 | break; | |
692 | ||
693 | case CONSTANT_CODE: | |
694 | val = this->u_.constant; | |
695 | break; | |
696 | ||
697 | default: | |
e727fa71 ILT |
698 | val = this->u_.object->local_symbol_value(this->local_sym_index_); |
699 | break; | |
ead1e424 ILT |
700 | } |
701 | ||
a3ad94ed | 702 | elfcpp::Swap<size, big_endian>::writeval(pov, val); |
ead1e424 ILT |
703 | } |
704 | ||
dbe717ef | 705 | // Output_data_got methods. |
ead1e424 | 706 | |
dbe717ef ILT |
707 | // Add an entry for a global symbol to the GOT. This returns true if |
708 | // this is a new GOT entry, false if the symbol already had a GOT | |
709 | // entry. | |
710 | ||
711 | template<int size, bool big_endian> | |
712 | bool | |
713 | Output_data_got<size, big_endian>::add_global(Symbol* gsym) | |
ead1e424 | 714 | { |
dbe717ef ILT |
715 | if (gsym->has_got_offset()) |
716 | return false; | |
ead1e424 | 717 | |
dbe717ef ILT |
718 | this->entries_.push_back(Got_entry(gsym)); |
719 | this->set_got_size(); | |
720 | gsym->set_got_offset(this->last_got_offset()); | |
721 | return true; | |
722 | } | |
ead1e424 | 723 | |
e727fa71 ILT |
724 | // Add an entry for a local symbol to the GOT. This returns true if |
725 | // this is a new GOT entry, false if the symbol already has a GOT | |
726 | // entry. | |
727 | ||
728 | template<int size, bool big_endian> | |
729 | bool | |
730 | Output_data_got<size, big_endian>::add_local( | |
731 | Sized_relobj<size, big_endian>* object, | |
732 | unsigned int symndx) | |
733 | { | |
734 | if (object->local_has_got_offset(symndx)) | |
735 | return false; | |
07f397ab | 736 | |
e727fa71 ILT |
737 | this->entries_.push_back(Got_entry(object, symndx)); |
738 | this->set_got_size(); | |
739 | object->set_local_got_offset(symndx, this->last_got_offset()); | |
740 | return true; | |
741 | } | |
742 | ||
07f397ab ILT |
743 | // Add an entry (or a pair of entries) for a global TLS symbol to the GOT. |
744 | // In a pair of entries, the first value in the pair will be used for the | |
745 | // module index, and the second value will be used for the dtv-relative | |
746 | // offset. This returns true if this is a new GOT entry, false if the symbol | |
747 | // already has a GOT entry. | |
748 | ||
749 | template<int size, bool big_endian> | |
750 | bool | |
751 | Output_data_got<size, big_endian>::add_global_tls(Symbol* gsym, | |
752 | bool need_pair) | |
753 | { | |
754 | if (gsym->has_tls_got_offset(need_pair)) | |
755 | return false; | |
756 | ||
757 | this->entries_.push_back(Got_entry(gsym)); | |
758 | gsym->set_tls_got_offset(this->last_got_offset(), need_pair); | |
759 | if (need_pair) | |
760 | this->entries_.push_back(Got_entry(gsym)); | |
761 | this->set_got_size(); | |
762 | return true; | |
763 | } | |
764 | ||
765 | // Add an entry (or a pair of entries) for a local TLS symbol to the GOT. | |
766 | // In a pair of entries, the first value in the pair will be used for the | |
767 | // module index, and the second value will be used for the dtv-relative | |
768 | // offset. This returns true if this is a new GOT entry, false if the symbol | |
769 | // already has a GOT entry. | |
770 | ||
771 | template<int size, bool big_endian> | |
772 | bool | |
773 | Output_data_got<size, big_endian>::add_local_tls( | |
774 | Sized_relobj<size, big_endian>* object, | |
775 | unsigned int symndx, | |
776 | bool need_pair) | |
777 | { | |
778 | if (object->local_has_tls_got_offset(symndx, need_pair)) | |
779 | return false; | |
780 | ||
781 | this->entries_.push_back(Got_entry(object, symndx)); | |
782 | object->set_local_tls_got_offset(symndx, this->last_got_offset(), need_pair); | |
783 | if (need_pair) | |
784 | this->entries_.push_back(Got_entry(object, symndx)); | |
785 | this->set_got_size(); | |
786 | return true; | |
787 | } | |
788 | ||
ead1e424 ILT |
789 | // Write out the GOT. |
790 | ||
791 | template<int size, bool big_endian> | |
792 | void | |
dbe717ef | 793 | Output_data_got<size, big_endian>::do_write(Output_file* of) |
ead1e424 ILT |
794 | { |
795 | const int add = size / 8; | |
796 | ||
797 | const off_t off = this->offset(); | |
c06b7b0b | 798 | const off_t oview_size = this->data_size(); |
ead1e424 ILT |
799 | unsigned char* const oview = of->get_output_view(off, oview_size); |
800 | ||
801 | unsigned char* pov = oview; | |
802 | for (typename Got_entries::const_iterator p = this->entries_.begin(); | |
803 | p != this->entries_.end(); | |
804 | ++p) | |
805 | { | |
7e1edb90 | 806 | p->write(pov); |
ead1e424 ILT |
807 | pov += add; |
808 | } | |
809 | ||
a3ad94ed | 810 | gold_assert(pov - oview == oview_size); |
c06b7b0b | 811 | |
ead1e424 ILT |
812 | of->write_output_view(off, oview_size, oview); |
813 | ||
814 | // We no longer need the GOT entries. | |
815 | this->entries_.clear(); | |
816 | } | |
817 | ||
a3ad94ed ILT |
818 | // Output_data_dynamic::Dynamic_entry methods. |
819 | ||
820 | // Write out the entry. | |
821 | ||
822 | template<int size, bool big_endian> | |
823 | void | |
824 | Output_data_dynamic::Dynamic_entry::write( | |
825 | unsigned char* pov, | |
1ddbd1e6 ILT |
826 | const Stringpool* pool |
827 | ACCEPT_SIZE_ENDIAN) const | |
a3ad94ed ILT |
828 | { |
829 | typename elfcpp::Elf_types<size>::Elf_WXword val; | |
830 | switch (this->classification_) | |
831 | { | |
832 | case DYNAMIC_NUMBER: | |
833 | val = this->u_.val; | |
834 | break; | |
835 | ||
836 | case DYNAMIC_SECTION_ADDRESS: | |
16649710 | 837 | val = this->u_.od->address(); |
a3ad94ed ILT |
838 | break; |
839 | ||
840 | case DYNAMIC_SECTION_SIZE: | |
16649710 | 841 | val = this->u_.od->data_size(); |
a3ad94ed ILT |
842 | break; |
843 | ||
844 | case DYNAMIC_SYMBOL: | |
845 | { | |
16649710 ILT |
846 | const Sized_symbol<size>* s = |
847 | static_cast<const Sized_symbol<size>*>(this->u_.sym); | |
a3ad94ed ILT |
848 | val = s->value(); |
849 | } | |
850 | break; | |
851 | ||
852 | case DYNAMIC_STRING: | |
853 | val = pool->get_offset(this->u_.str); | |
854 | break; | |
855 | ||
856 | default: | |
857 | gold_unreachable(); | |
858 | } | |
859 | ||
860 | elfcpp::Dyn_write<size, big_endian> dw(pov); | |
861 | dw.put_d_tag(this->tag_); | |
862 | dw.put_d_val(val); | |
863 | } | |
864 | ||
865 | // Output_data_dynamic methods. | |
866 | ||
16649710 ILT |
867 | // Adjust the output section to set the entry size. |
868 | ||
869 | void | |
870 | Output_data_dynamic::do_adjust_output_section(Output_section* os) | |
871 | { | |
9025d29d | 872 | if (parameters->get_size() == 32) |
16649710 | 873 | os->set_entsize(elfcpp::Elf_sizes<32>::dyn_size); |
9025d29d | 874 | else if (parameters->get_size() == 64) |
16649710 ILT |
875 | os->set_entsize(elfcpp::Elf_sizes<64>::dyn_size); |
876 | else | |
877 | gold_unreachable(); | |
878 | } | |
879 | ||
a3ad94ed ILT |
880 | // Set the final data size. |
881 | ||
882 | void | |
27bc2bce | 883 | Output_data_dynamic::set_final_data_size() |
a3ad94ed ILT |
884 | { |
885 | // Add the terminating entry. | |
886 | this->add_constant(elfcpp::DT_NULL, 0); | |
887 | ||
888 | int dyn_size; | |
9025d29d | 889 | if (parameters->get_size() == 32) |
a3ad94ed | 890 | dyn_size = elfcpp::Elf_sizes<32>::dyn_size; |
9025d29d | 891 | else if (parameters->get_size() == 64) |
a3ad94ed ILT |
892 | dyn_size = elfcpp::Elf_sizes<64>::dyn_size; |
893 | else | |
894 | gold_unreachable(); | |
895 | this->set_data_size(this->entries_.size() * dyn_size); | |
896 | } | |
897 | ||
898 | // Write out the dynamic entries. | |
899 | ||
900 | void | |
901 | Output_data_dynamic::do_write(Output_file* of) | |
902 | { | |
9025d29d | 903 | if (parameters->get_size() == 32) |
a3ad94ed | 904 | { |
9025d29d ILT |
905 | if (parameters->is_big_endian()) |
906 | { | |
907 | #ifdef HAVE_TARGET_32_BIG | |
908 | this->sized_write<32, true>(of); | |
909 | #else | |
910 | gold_unreachable(); | |
911 | #endif | |
912 | } | |
a3ad94ed | 913 | else |
9025d29d ILT |
914 | { |
915 | #ifdef HAVE_TARGET_32_LITTLE | |
916 | this->sized_write<32, false>(of); | |
917 | #else | |
918 | gold_unreachable(); | |
919 | #endif | |
920 | } | |
a3ad94ed | 921 | } |
9025d29d | 922 | else if (parameters->get_size() == 64) |
a3ad94ed | 923 | { |
9025d29d ILT |
924 | if (parameters->is_big_endian()) |
925 | { | |
926 | #ifdef HAVE_TARGET_64_BIG | |
927 | this->sized_write<64, true>(of); | |
928 | #else | |
929 | gold_unreachable(); | |
930 | #endif | |
931 | } | |
a3ad94ed | 932 | else |
9025d29d ILT |
933 | { |
934 | #ifdef HAVE_TARGET_64_LITTLE | |
935 | this->sized_write<64, false>(of); | |
936 | #else | |
937 | gold_unreachable(); | |
938 | #endif | |
939 | } | |
a3ad94ed ILT |
940 | } |
941 | else | |
942 | gold_unreachable(); | |
943 | } | |
944 | ||
945 | template<int size, bool big_endian> | |
946 | void | |
947 | Output_data_dynamic::sized_write(Output_file* of) | |
948 | { | |
949 | const int dyn_size = elfcpp::Elf_sizes<size>::dyn_size; | |
950 | ||
951 | const off_t offset = this->offset(); | |
952 | const off_t oview_size = this->data_size(); | |
953 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
954 | ||
955 | unsigned char* pov = oview; | |
956 | for (typename Dynamic_entries::const_iterator p = this->entries_.begin(); | |
957 | p != this->entries_.end(); | |
958 | ++p) | |
959 | { | |
1ddbd1e6 ILT |
960 | p->write SELECT_SIZE_ENDIAN_NAME(size, big_endian)( |
961 | pov, this->pool_ SELECT_SIZE_ENDIAN(size, big_endian)); | |
a3ad94ed ILT |
962 | pov += dyn_size; |
963 | } | |
964 | ||
965 | gold_assert(pov - oview == oview_size); | |
966 | ||
967 | of->write_output_view(offset, oview_size, oview); | |
968 | ||
969 | // We no longer need the dynamic entries. | |
970 | this->entries_.clear(); | |
971 | } | |
972 | ||
ead1e424 ILT |
973 | // Output_section::Input_section methods. |
974 | ||
975 | // Return the data size. For an input section we store the size here. | |
976 | // For an Output_section_data, we have to ask it for the size. | |
977 | ||
978 | off_t | |
979 | Output_section::Input_section::data_size() const | |
980 | { | |
981 | if (this->is_input_section()) | |
b8e6aad9 | 982 | return this->u1_.data_size; |
ead1e424 | 983 | else |
b8e6aad9 | 984 | return this->u2_.posd->data_size(); |
ead1e424 ILT |
985 | } |
986 | ||
987 | // Set the address and file offset. | |
988 | ||
989 | void | |
990 | Output_section::Input_section::set_address(uint64_t addr, off_t off, | |
991 | off_t secoff) | |
992 | { | |
993 | if (this->is_input_section()) | |
b8e6aad9 | 994 | this->u2_.object->set_section_offset(this->shndx_, off - secoff); |
ead1e424 | 995 | else |
27bc2bce | 996 | this->u2_.posd->set_address_and_file_offset(addr, off); |
b8e6aad9 ILT |
997 | } |
998 | ||
730cdc88 | 999 | // Try to turn an input offset into an output offset. |
b8e6aad9 ILT |
1000 | |
1001 | bool | |
730cdc88 ILT |
1002 | Output_section::Input_section::output_offset(const Relobj* object, |
1003 | unsigned int shndx, | |
1004 | off_t offset, | |
1005 | off_t *poutput) const | |
b8e6aad9 ILT |
1006 | { |
1007 | if (!this->is_input_section()) | |
730cdc88 | 1008 | return this->u2_.posd->output_offset(object, shndx, offset, poutput); |
b8e6aad9 ILT |
1009 | else |
1010 | { | |
730cdc88 | 1011 | if (this->shndx_ != shndx || this->u2_.object != object) |
b8e6aad9 ILT |
1012 | return false; |
1013 | off_t output_offset; | |
1014 | Output_section* os = object->output_section(shndx, &output_offset); | |
1015 | gold_assert(os != NULL); | |
730cdc88 ILT |
1016 | gold_assert(output_offset != -1); |
1017 | *poutput = output_offset + offset; | |
b8e6aad9 ILT |
1018 | return true; |
1019 | } | |
ead1e424 ILT |
1020 | } |
1021 | ||
1022 | // Write out the data. We don't have to do anything for an input | |
1023 | // section--they are handled via Object::relocate--but this is where | |
1024 | // we write out the data for an Output_section_data. | |
1025 | ||
1026 | void | |
1027 | Output_section::Input_section::write(Output_file* of) | |
1028 | { | |
1029 | if (!this->is_input_section()) | |
b8e6aad9 | 1030 | this->u2_.posd->write(of); |
ead1e424 ILT |
1031 | } |
1032 | ||
a2fb1b05 ILT |
1033 | // Output_section methods. |
1034 | ||
1035 | // Construct an Output_section. NAME will point into a Stringpool. | |
1036 | ||
9a0910c3 ILT |
1037 | Output_section::Output_section(const General_options& options, |
1038 | const char* name, elfcpp::Elf_Word type, | |
b8e6aad9 | 1039 | elfcpp::Elf_Xword flags) |
9a0910c3 ILT |
1040 | : options_(options), |
1041 | name_(name), | |
a2fb1b05 ILT |
1042 | addralign_(0), |
1043 | entsize_(0), | |
16649710 | 1044 | link_section_(NULL), |
a2fb1b05 | 1045 | link_(0), |
16649710 | 1046 | info_section_(NULL), |
a2fb1b05 ILT |
1047 | info_(0), |
1048 | type_(type), | |
61ba1cf9 | 1049 | flags_(flags), |
91ea499d | 1050 | out_shndx_(-1U), |
c06b7b0b ILT |
1051 | symtab_index_(0), |
1052 | dynsym_index_(0), | |
ead1e424 ILT |
1053 | input_sections_(), |
1054 | first_input_offset_(0), | |
c51e6221 | 1055 | fills_(), |
a3ad94ed | 1056 | needs_symtab_index_(false), |
16649710 ILT |
1057 | needs_dynsym_index_(false), |
1058 | should_link_to_symtab_(false), | |
730cdc88 | 1059 | should_link_to_dynsym_(false), |
27bc2bce ILT |
1060 | after_input_sections_(false), |
1061 | requires_postprocessing_(false) | |
a2fb1b05 | 1062 | { |
27bc2bce ILT |
1063 | // An unallocated section has no address. Forcing this means that |
1064 | // we don't need special treatment for symbols defined in debug | |
1065 | // sections. | |
1066 | if ((flags & elfcpp::SHF_ALLOC) == 0) | |
1067 | this->set_address(0); | |
a2fb1b05 ILT |
1068 | } |
1069 | ||
54dc6425 ILT |
1070 | Output_section::~Output_section() |
1071 | { | |
1072 | } | |
1073 | ||
16649710 ILT |
1074 | // Set the entry size. |
1075 | ||
1076 | void | |
1077 | Output_section::set_entsize(uint64_t v) | |
1078 | { | |
1079 | if (this->entsize_ == 0) | |
1080 | this->entsize_ = v; | |
1081 | else | |
1082 | gold_assert(this->entsize_ == v); | |
1083 | } | |
1084 | ||
9a0910c3 ILT |
1085 | // Sometimes we compress sections. This is typically done for |
1086 | // sections that are not part of normal program execution (such as | |
1087 | // .debug_* sections), and where the readers of these sections know | |
1088 | // how to deal with compressed sections. (To make it easier for them, | |
1089 | // we will rename the ouput section in such cases from .foo to | |
1090 | // .foo.zlib.nnnn, where nnnn is the uncompressed size.) This routine | |
1091 | // doesn't say for certain whether we'll compress -- it depends on | |
1092 | // commandline options as well -- just whether this section is a | |
1093 | // candidate for compression. | |
1094 | ||
1095 | static bool | |
1096 | is_compressible_section(const char* secname) | |
1097 | { | |
1098 | return (strncmp(secname, ".debug", sizeof(".debug") - 1) == 0); | |
1099 | } | |
1100 | ||
ead1e424 | 1101 | // Add the input section SHNDX, with header SHDR, named SECNAME, in |
730cdc88 ILT |
1102 | // OBJECT, to the Output_section. RELOC_SHNDX is the index of a |
1103 | // relocation section which applies to this section, or 0 if none, or | |
1104 | // -1U if more than one. Return the offset of the input section | |
1105 | // within the output section. Return -1 if the input section will | |
1106 | // receive special handling. In the normal case we don't always keep | |
1107 | // track of input sections for an Output_section. Instead, each | |
1108 | // Object keeps track of the Output_section for each of its input | |
1109 | // sections. | |
a2fb1b05 ILT |
1110 | |
1111 | template<int size, bool big_endian> | |
1112 | off_t | |
730cdc88 ILT |
1113 | Output_section::add_input_section(Sized_relobj<size, big_endian>* object, |
1114 | unsigned int shndx, | |
ead1e424 | 1115 | const char* secname, |
730cdc88 ILT |
1116 | const elfcpp::Shdr<size, big_endian>& shdr, |
1117 | unsigned int reloc_shndx) | |
a2fb1b05 ILT |
1118 | { |
1119 | elfcpp::Elf_Xword addralign = shdr.get_sh_addralign(); | |
1120 | if ((addralign & (addralign - 1)) != 0) | |
1121 | { | |
75f2446e ILT |
1122 | object->error(_("invalid alignment %lu for section \"%s\""), |
1123 | static_cast<unsigned long>(addralign), secname); | |
1124 | addralign = 1; | |
a2fb1b05 | 1125 | } |
a2fb1b05 ILT |
1126 | |
1127 | if (addralign > this->addralign_) | |
1128 | this->addralign_ = addralign; | |
1129 | ||
44a43cf9 | 1130 | typename elfcpp::Elf_types<size>::Elf_WXword sh_flags = shdr.get_sh_flags(); |
4f833eee | 1131 | uint64_t entsize = shdr.get_sh_entsize(); |
44a43cf9 ILT |
1132 | |
1133 | // .debug_str is a mergeable string section, but is not always so | |
1134 | // marked by compilers. Mark manually here so we can optimize. | |
1135 | if (strcmp(secname, ".debug_str") == 0) | |
4f833eee ILT |
1136 | { |
1137 | sh_flags |= (elfcpp::SHF_MERGE | elfcpp::SHF_STRINGS); | |
1138 | entsize = 1; | |
1139 | } | |
44a43cf9 | 1140 | |
b8e6aad9 | 1141 | // If this is a SHF_MERGE section, we pass all the input sections to |
730cdc88 ILT |
1142 | // a Output_data_merge. We don't try to handle relocations for such |
1143 | // a section. | |
44a43cf9 | 1144 | if ((sh_flags & elfcpp::SHF_MERGE) != 0 |
730cdc88 | 1145 | && reloc_shndx == 0) |
b8e6aad9 | 1146 | { |
44a43cf9 | 1147 | if (this->add_merge_input_section(object, shndx, sh_flags, |
9a0910c3 ILT |
1148 | entsize, addralign, |
1149 | is_compressible_section(secname))) | |
b8e6aad9 ILT |
1150 | { |
1151 | // Tell the relocation routines that they need to call the | |
730cdc88 | 1152 | // output_offset method to determine the final address. |
b8e6aad9 ILT |
1153 | return -1; |
1154 | } | |
1155 | } | |
1156 | ||
27bc2bce | 1157 | off_t offset_in_section = this->current_data_size_for_child(); |
c51e6221 ILT |
1158 | off_t aligned_offset_in_section = align_address(offset_in_section, |
1159 | addralign); | |
1160 | ||
1161 | if (aligned_offset_in_section > offset_in_section | |
44a43cf9 | 1162 | && (sh_flags & elfcpp::SHF_EXECINSTR) != 0 |
c51e6221 ILT |
1163 | && object->target()->has_code_fill()) |
1164 | { | |
1165 | // We need to add some fill data. Using fill_list_ when | |
1166 | // possible is an optimization, since we will often have fill | |
1167 | // sections without input sections. | |
1168 | off_t fill_len = aligned_offset_in_section - offset_in_section; | |
1169 | if (this->input_sections_.empty()) | |
1170 | this->fills_.push_back(Fill(offset_in_section, fill_len)); | |
1171 | else | |
1172 | { | |
1173 | // FIXME: When relaxing, the size needs to adjust to | |
1174 | // maintain a constant alignment. | |
1175 | std::string fill_data(object->target()->code_fill(fill_len)); | |
1176 | Output_data_const* odc = new Output_data_const(fill_data, 1); | |
1177 | this->input_sections_.push_back(Input_section(odc)); | |
1178 | } | |
1179 | } | |
1180 | ||
27bc2bce ILT |
1181 | this->set_current_data_size_for_child(aligned_offset_in_section |
1182 | + shdr.get_sh_size()); | |
a2fb1b05 | 1183 | |
ead1e424 ILT |
1184 | // We need to keep track of this section if we are already keeping |
1185 | // track of sections, or if we are relaxing. FIXME: Add test for | |
1186 | // relaxing. | |
c51e6221 | 1187 | if (!this->input_sections_.empty()) |
ead1e424 ILT |
1188 | this->input_sections_.push_back(Input_section(object, shndx, |
1189 | shdr.get_sh_size(), | |
1190 | addralign)); | |
54dc6425 | 1191 | |
c51e6221 | 1192 | return aligned_offset_in_section; |
61ba1cf9 ILT |
1193 | } |
1194 | ||
ead1e424 ILT |
1195 | // Add arbitrary data to an output section. |
1196 | ||
1197 | void | |
1198 | Output_section::add_output_section_data(Output_section_data* posd) | |
1199 | { | |
b8e6aad9 ILT |
1200 | Input_section inp(posd); |
1201 | this->add_output_section_data(&inp); | |
1202 | } | |
1203 | ||
1204 | // Add arbitrary data to an output section by Input_section. | |
c06b7b0b | 1205 | |
b8e6aad9 ILT |
1206 | void |
1207 | Output_section::add_output_section_data(Input_section* inp) | |
1208 | { | |
ead1e424 | 1209 | if (this->input_sections_.empty()) |
27bc2bce | 1210 | this->first_input_offset_ = this->current_data_size_for_child(); |
c06b7b0b | 1211 | |
b8e6aad9 | 1212 | this->input_sections_.push_back(*inp); |
c06b7b0b | 1213 | |
b8e6aad9 | 1214 | uint64_t addralign = inp->addralign(); |
ead1e424 ILT |
1215 | if (addralign > this->addralign_) |
1216 | this->addralign_ = addralign; | |
c06b7b0b | 1217 | |
b8e6aad9 ILT |
1218 | inp->set_output_section(this); |
1219 | } | |
1220 | ||
1221 | // Add a merge section to an output section. | |
1222 | ||
1223 | void | |
1224 | Output_section::add_output_merge_section(Output_section_data* posd, | |
1225 | bool is_string, uint64_t entsize) | |
1226 | { | |
1227 | Input_section inp(posd, is_string, entsize); | |
1228 | this->add_output_section_data(&inp); | |
1229 | } | |
1230 | ||
1231 | // Add an input section to a SHF_MERGE section. | |
1232 | ||
1233 | bool | |
1234 | Output_section::add_merge_input_section(Relobj* object, unsigned int shndx, | |
1235 | uint64_t flags, uint64_t entsize, | |
9a0910c3 ILT |
1236 | uint64_t addralign, |
1237 | bool is_compressible_section) | |
b8e6aad9 | 1238 | { |
87f95776 ILT |
1239 | bool is_string = (flags & elfcpp::SHF_STRINGS) != 0; |
1240 | ||
1241 | // We only merge strings if the alignment is not more than the | |
1242 | // character size. This could be handled, but it's unusual. | |
1243 | if (is_string && addralign > entsize) | |
b8e6aad9 ILT |
1244 | return false; |
1245 | ||
b8e6aad9 ILT |
1246 | Input_section_list::iterator p; |
1247 | for (p = this->input_sections_.begin(); | |
1248 | p != this->input_sections_.end(); | |
1249 | ++p) | |
87f95776 | 1250 | if (p->is_merge_section(is_string, entsize, addralign)) |
9a0910c3 ILT |
1251 | { |
1252 | p->add_input_section(object, shndx); | |
1253 | return true; | |
1254 | } | |
b8e6aad9 ILT |
1255 | |
1256 | // We handle the actual constant merging in Output_merge_data or | |
1257 | // Output_merge_string_data. | |
9a0910c3 ILT |
1258 | Output_section_data* posd; |
1259 | if (!is_string) | |
1260 | posd = new Output_merge_data(entsize, addralign); | |
1261 | else if (is_compressible_section && options_.compress_debug_sections()) | |
1262 | { | |
1263 | switch (entsize) | |
1264 | { | |
1265 | case 1: | |
1266 | posd = new Output_compressed_string<char>(addralign, this->options_); | |
1267 | break; | |
1268 | case 2: | |
1269 | posd = new Output_compressed_string<uint16_t>(addralign, | |
1270 | this->options_); | |
1271 | break; | |
1272 | case 4: | |
1273 | posd = new Output_compressed_string<uint32_t>(addralign, | |
1274 | this->options_); | |
1275 | break; | |
1276 | default: | |
1277 | return false; | |
1278 | } | |
1279 | } | |
b8e6aad9 ILT |
1280 | else |
1281 | { | |
9a0910c3 ILT |
1282 | switch (entsize) |
1283 | { | |
1284 | case 1: | |
1285 | posd = new Output_merge_string<char>(addralign); | |
1286 | break; | |
1287 | case 2: | |
1288 | posd = new Output_merge_string<uint16_t>(addralign); | |
1289 | break; | |
1290 | case 4: | |
1291 | posd = new Output_merge_string<uint32_t>(addralign); | |
1292 | break; | |
1293 | default: | |
1294 | return false; | |
1295 | } | |
b8e6aad9 ILT |
1296 | } |
1297 | ||
9a0910c3 ILT |
1298 | this->add_output_merge_section(posd, is_string, entsize); |
1299 | posd->add_input_section(object, shndx); | |
1300 | ||
b8e6aad9 ILT |
1301 | return true; |
1302 | } | |
1303 | ||
730cdc88 ILT |
1304 | // Given an address OFFSET relative to the start of input section |
1305 | // SHNDX in OBJECT, return whether this address is being included in | |
1306 | // the final link. This should only be called if SHNDX in OBJECT has | |
1307 | // a special mapping. | |
1308 | ||
1309 | bool | |
1310 | Output_section::is_input_address_mapped(const Relobj* object, | |
1311 | unsigned int shndx, | |
1312 | off_t offset) const | |
1313 | { | |
1314 | gold_assert(object->is_section_specially_mapped(shndx)); | |
1315 | ||
1316 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1317 | p != this->input_sections_.end(); | |
1318 | ++p) | |
1319 | { | |
1320 | off_t output_offset; | |
1321 | if (p->output_offset(object, shndx, offset, &output_offset)) | |
1322 | return output_offset != -1; | |
1323 | } | |
1324 | ||
1325 | // By default we assume that the address is mapped. This should | |
1326 | // only be called after we have passed all sections to Layout. At | |
1327 | // that point we should know what we are discarding. | |
1328 | return true; | |
1329 | } | |
1330 | ||
1331 | // Given an address OFFSET relative to the start of input section | |
1332 | // SHNDX in object OBJECT, return the output offset relative to the | |
1333 | // start of the section. This should only be called if SHNDX in | |
1334 | // OBJECT has a special mapping. | |
1335 | ||
1336 | off_t | |
1337 | Output_section::output_offset(const Relobj* object, unsigned int shndx, | |
1338 | off_t offset) const | |
1339 | { | |
1340 | gold_assert(object->is_section_specially_mapped(shndx)); | |
1341 | // This can only be called meaningfully when layout is complete. | |
1342 | gold_assert(Output_data::is_layout_complete()); | |
1343 | ||
1344 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1345 | p != this->input_sections_.end(); | |
1346 | ++p) | |
1347 | { | |
1348 | off_t output_offset; | |
1349 | if (p->output_offset(object, shndx, offset, &output_offset)) | |
1350 | return output_offset; | |
1351 | } | |
1352 | gold_unreachable(); | |
1353 | } | |
1354 | ||
b8e6aad9 ILT |
1355 | // Return the output virtual address of OFFSET relative to the start |
1356 | // of input section SHNDX in object OBJECT. | |
1357 | ||
1358 | uint64_t | |
1359 | Output_section::output_address(const Relobj* object, unsigned int shndx, | |
1360 | off_t offset) const | |
1361 | { | |
730cdc88 ILT |
1362 | gold_assert(object->is_section_specially_mapped(shndx)); |
1363 | // This can only be called meaningfully when layout is complete. | |
1364 | gold_assert(Output_data::is_layout_complete()); | |
1365 | ||
b8e6aad9 ILT |
1366 | uint64_t addr = this->address() + this->first_input_offset_; |
1367 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1368 | p != this->input_sections_.end(); | |
1369 | ++p) | |
1370 | { | |
1371 | addr = align_address(addr, p->addralign()); | |
730cdc88 ILT |
1372 | off_t output_offset; |
1373 | if (p->output_offset(object, shndx, offset, &output_offset)) | |
1374 | { | |
1375 | if (output_offset == -1) | |
1376 | return -1U; | |
1377 | return addr + output_offset; | |
1378 | } | |
b8e6aad9 ILT |
1379 | addr += p->data_size(); |
1380 | } | |
1381 | ||
1382 | // If we get here, it means that we don't know the mapping for this | |
1383 | // input section. This might happen in principle if | |
1384 | // add_input_section were called before add_output_section_data. | |
1385 | // But it should never actually happen. | |
1386 | ||
1387 | gold_unreachable(); | |
ead1e424 ILT |
1388 | } |
1389 | ||
27bc2bce | 1390 | // Set the data size of an Output_section. This is where we handle |
ead1e424 ILT |
1391 | // setting the addresses of any Output_section_data objects. |
1392 | ||
1393 | void | |
27bc2bce | 1394 | Output_section::set_final_data_size() |
ead1e424 ILT |
1395 | { |
1396 | if (this->input_sections_.empty()) | |
27bc2bce ILT |
1397 | { |
1398 | this->set_data_size(this->current_data_size_for_child()); | |
1399 | return; | |
1400 | } | |
ead1e424 | 1401 | |
27bc2bce ILT |
1402 | uint64_t address = this->address(); |
1403 | off_t startoff = this->offset(); | |
ead1e424 ILT |
1404 | off_t off = startoff + this->first_input_offset_; |
1405 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
1406 | p != this->input_sections_.end(); | |
1407 | ++p) | |
1408 | { | |
1409 | off = align_address(off, p->addralign()); | |
1410 | p->set_address(address + (off - startoff), off, startoff); | |
1411 | off += p->data_size(); | |
1412 | } | |
1413 | ||
1414 | this->set_data_size(off - startoff); | |
1415 | } | |
9a0910c3 ILT |
1416 | |
1417 | // Ask each output_section_data member if it wants to change the name | |
1418 | // of the output section. If any of them says yes, use this to set | |
1419 | // the new name. This should be called after all processing of this | |
1420 | // output section is done, but before the name is finally committed to | |
1421 | // the output-section's header. | |
1422 | ||
1423 | bool | |
1424 | Output_section::maybe_modify_output_section_name() | |
1425 | { | |
1426 | for (Input_section_list::const_iterator it = input_sections_.begin(); | |
1427 | it != input_sections_.end(); | |
1428 | ++it) | |
1429 | { | |
1430 | const char* newname = it->modified_output_section_name(this->name()); | |
1431 | if (newname != NULL) | |
1432 | { | |
1433 | this->set_name(newname); | |
1434 | return true; | |
1435 | } | |
1436 | } | |
1437 | return false; | |
1438 | } | |
ead1e424 | 1439 | |
61ba1cf9 ILT |
1440 | // Write the section header to *OSHDR. |
1441 | ||
1442 | template<int size, bool big_endian> | |
1443 | void | |
16649710 ILT |
1444 | Output_section::write_header(const Layout* layout, |
1445 | const Stringpool* secnamepool, | |
61ba1cf9 ILT |
1446 | elfcpp::Shdr_write<size, big_endian>* oshdr) const |
1447 | { | |
1448 | oshdr->put_sh_name(secnamepool->get_offset(this->name_)); | |
1449 | oshdr->put_sh_type(this->type_); | |
1450 | oshdr->put_sh_flags(this->flags_); | |
1451 | oshdr->put_sh_addr(this->address()); | |
1452 | oshdr->put_sh_offset(this->offset()); | |
1453 | oshdr->put_sh_size(this->data_size()); | |
16649710 ILT |
1454 | if (this->link_section_ != NULL) |
1455 | oshdr->put_sh_link(this->link_section_->out_shndx()); | |
1456 | else if (this->should_link_to_symtab_) | |
1457 | oshdr->put_sh_link(layout->symtab_section()->out_shndx()); | |
1458 | else if (this->should_link_to_dynsym_) | |
1459 | oshdr->put_sh_link(layout->dynsym_section()->out_shndx()); | |
1460 | else | |
1461 | oshdr->put_sh_link(this->link_); | |
1462 | if (this->info_section_ != NULL) | |
1463 | oshdr->put_sh_info(this->info_section_->out_shndx()); | |
1464 | else | |
1465 | oshdr->put_sh_info(this->info_); | |
61ba1cf9 ILT |
1466 | oshdr->put_sh_addralign(this->addralign_); |
1467 | oshdr->put_sh_entsize(this->entsize_); | |
a2fb1b05 ILT |
1468 | } |
1469 | ||
ead1e424 ILT |
1470 | // Write out the data. For input sections the data is written out by |
1471 | // Object::relocate, but we have to handle Output_section_data objects | |
1472 | // here. | |
1473 | ||
1474 | void | |
1475 | Output_section::do_write(Output_file* of) | |
1476 | { | |
c51e6221 ILT |
1477 | off_t output_section_file_offset = this->offset(); |
1478 | for (Fill_list::iterator p = this->fills_.begin(); | |
1479 | p != this->fills_.end(); | |
1480 | ++p) | |
1481 | { | |
1482 | std::string fill_data(of->target()->code_fill(p->length())); | |
1483 | of->write(output_section_file_offset + p->section_offset(), | |
1484 | fill_data.data(), fill_data.size()); | |
1485 | } | |
1486 | ||
ead1e424 ILT |
1487 | for (Input_section_list::iterator p = this->input_sections_.begin(); |
1488 | p != this->input_sections_.end(); | |
1489 | ++p) | |
1490 | p->write(of); | |
1491 | } | |
1492 | ||
a2fb1b05 ILT |
1493 | // Output segment methods. |
1494 | ||
1495 | Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags) | |
54dc6425 | 1496 | : output_data_(), |
75f65a3e | 1497 | output_bss_(), |
a2fb1b05 ILT |
1498 | vaddr_(0), |
1499 | paddr_(0), | |
1500 | memsz_(0), | |
1501 | align_(0), | |
1502 | offset_(0), | |
1503 | filesz_(0), | |
1504 | type_(type), | |
ead1e424 ILT |
1505 | flags_(flags), |
1506 | is_align_known_(false) | |
a2fb1b05 ILT |
1507 | { |
1508 | } | |
1509 | ||
1510 | // Add an Output_section to an Output_segment. | |
1511 | ||
1512 | void | |
75f65a3e | 1513 | Output_segment::add_output_section(Output_section* os, |
dbe717ef ILT |
1514 | elfcpp::Elf_Word seg_flags, |
1515 | bool front) | |
a2fb1b05 | 1516 | { |
a3ad94ed ILT |
1517 | gold_assert((os->flags() & elfcpp::SHF_ALLOC) != 0); |
1518 | gold_assert(!this->is_align_known_); | |
75f65a3e | 1519 | |
ead1e424 | 1520 | // Update the segment flags. |
75f65a3e | 1521 | this->flags_ |= seg_flags; |
75f65a3e ILT |
1522 | |
1523 | Output_segment::Output_data_list* pdl; | |
1524 | if (os->type() == elfcpp::SHT_NOBITS) | |
1525 | pdl = &this->output_bss_; | |
1526 | else | |
1527 | pdl = &this->output_data_; | |
54dc6425 | 1528 | |
a2fb1b05 ILT |
1529 | // So that PT_NOTE segments will work correctly, we need to ensure |
1530 | // that all SHT_NOTE sections are adjacent. This will normally | |
1531 | // happen automatically, because all the SHT_NOTE input sections | |
1532 | // will wind up in the same output section. However, it is possible | |
1533 | // for multiple SHT_NOTE input sections to have different section | |
1534 | // flags, and thus be in different output sections, but for the | |
1535 | // different section flags to map into the same segment flags and | |
1536 | // thus the same output segment. | |
54dc6425 ILT |
1537 | |
1538 | // Note that while there may be many input sections in an output | |
1539 | // section, there are normally only a few output sections in an | |
1540 | // output segment. This loop is expected to be fast. | |
1541 | ||
61ba1cf9 | 1542 | if (os->type() == elfcpp::SHT_NOTE && !pdl->empty()) |
a2fb1b05 | 1543 | { |
a3ad94ed | 1544 | Output_segment::Output_data_list::iterator p = pdl->end(); |
75f65a3e | 1545 | do |
54dc6425 | 1546 | { |
75f65a3e | 1547 | --p; |
54dc6425 ILT |
1548 | if ((*p)->is_section_type(elfcpp::SHT_NOTE)) |
1549 | { | |
dbe717ef | 1550 | // We don't worry about the FRONT parameter. |
54dc6425 | 1551 | ++p; |
75f65a3e | 1552 | pdl->insert(p, os); |
54dc6425 ILT |
1553 | return; |
1554 | } | |
1555 | } | |
75f65a3e | 1556 | while (p != pdl->begin()); |
54dc6425 ILT |
1557 | } |
1558 | ||
1559 | // Similarly, so that PT_TLS segments will work, we need to group | |
75f65a3e ILT |
1560 | // SHF_TLS sections. An SHF_TLS/SHT_NOBITS section is a special |
1561 | // case: we group the SHF_TLS/SHT_NOBITS sections right after the | |
1562 | // SHF_TLS/SHT_PROGBITS sections. This lets us set up PT_TLS | |
07f397ab ILT |
1563 | // correctly. SHF_TLS sections get added to both a PT_LOAD segment |
1564 | // and the PT_TLS segment -- we do this grouping only for the | |
1565 | // PT_LOAD segment. | |
1566 | if (this->type_ != elfcpp::PT_TLS | |
1567 | && (os->flags() & elfcpp::SHF_TLS) != 0 | |
1568 | && !this->output_data_.empty()) | |
54dc6425 | 1569 | { |
75f65a3e ILT |
1570 | pdl = &this->output_data_; |
1571 | bool nobits = os->type() == elfcpp::SHT_NOBITS; | |
ead1e424 | 1572 | bool sawtls = false; |
a3ad94ed | 1573 | Output_segment::Output_data_list::iterator p = pdl->end(); |
75f65a3e | 1574 | do |
a2fb1b05 | 1575 | { |
75f65a3e | 1576 | --p; |
ead1e424 ILT |
1577 | bool insert; |
1578 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
1579 | { | |
1580 | sawtls = true; | |
1581 | // Put a NOBITS section after the first TLS section. | |
1582 | // But a PROGBITS section after the first TLS/PROGBITS | |
1583 | // section. | |
1584 | insert = nobits || !(*p)->is_section_type(elfcpp::SHT_NOBITS); | |
1585 | } | |
1586 | else | |
1587 | { | |
1588 | // If we've gone past the TLS sections, but we've seen a | |
1589 | // TLS section, then we need to insert this section now. | |
1590 | insert = sawtls; | |
1591 | } | |
1592 | ||
1593 | if (insert) | |
a2fb1b05 | 1594 | { |
dbe717ef | 1595 | // We don't worry about the FRONT parameter. |
a2fb1b05 | 1596 | ++p; |
75f65a3e | 1597 | pdl->insert(p, os); |
a2fb1b05 ILT |
1598 | return; |
1599 | } | |
1600 | } | |
75f65a3e | 1601 | while (p != pdl->begin()); |
ead1e424 | 1602 | |
dbe717ef ILT |
1603 | // There are no TLS sections yet; put this one at the requested |
1604 | // location in the section list. | |
a2fb1b05 ILT |
1605 | } |
1606 | ||
dbe717ef ILT |
1607 | if (front) |
1608 | pdl->push_front(os); | |
1609 | else | |
1610 | pdl->push_back(os); | |
75f65a3e ILT |
1611 | } |
1612 | ||
1613 | // Add an Output_data (which is not an Output_section) to the start of | |
1614 | // a segment. | |
1615 | ||
1616 | void | |
1617 | Output_segment::add_initial_output_data(Output_data* od) | |
1618 | { | |
a3ad94ed | 1619 | gold_assert(!this->is_align_known_); |
75f65a3e ILT |
1620 | this->output_data_.push_front(od); |
1621 | } | |
1622 | ||
1623 | // Return the maximum alignment of the Output_data in Output_segment. | |
ead1e424 | 1624 | // Once we compute this, we prohibit new sections from being added. |
75f65a3e ILT |
1625 | |
1626 | uint64_t | |
ead1e424 | 1627 | Output_segment::addralign() |
75f65a3e | 1628 | { |
ead1e424 ILT |
1629 | if (!this->is_align_known_) |
1630 | { | |
1631 | uint64_t addralign; | |
1632 | ||
1633 | addralign = Output_segment::maximum_alignment(&this->output_data_); | |
1634 | if (addralign > this->align_) | |
1635 | this->align_ = addralign; | |
1636 | ||
1637 | addralign = Output_segment::maximum_alignment(&this->output_bss_); | |
1638 | if (addralign > this->align_) | |
1639 | this->align_ = addralign; | |
1640 | ||
1641 | this->is_align_known_ = true; | |
1642 | } | |
1643 | ||
75f65a3e ILT |
1644 | return this->align_; |
1645 | } | |
1646 | ||
ead1e424 ILT |
1647 | // Return the maximum alignment of a list of Output_data. |
1648 | ||
1649 | uint64_t | |
1650 | Output_segment::maximum_alignment(const Output_data_list* pdl) | |
1651 | { | |
1652 | uint64_t ret = 0; | |
1653 | for (Output_data_list::const_iterator p = pdl->begin(); | |
1654 | p != pdl->end(); | |
1655 | ++p) | |
1656 | { | |
1657 | uint64_t addralign = (*p)->addralign(); | |
1658 | if (addralign > ret) | |
1659 | ret = addralign; | |
1660 | } | |
1661 | return ret; | |
1662 | } | |
1663 | ||
4f4c5f80 ILT |
1664 | // Return the number of dynamic relocs applied to this segment. |
1665 | ||
1666 | unsigned int | |
1667 | Output_segment::dynamic_reloc_count() const | |
1668 | { | |
1669 | return (this->dynamic_reloc_count_list(&this->output_data_) | |
1670 | + this->dynamic_reloc_count_list(&this->output_bss_)); | |
1671 | } | |
1672 | ||
1673 | // Return the number of dynamic relocs applied to an Output_data_list. | |
1674 | ||
1675 | unsigned int | |
1676 | Output_segment::dynamic_reloc_count_list(const Output_data_list* pdl) const | |
1677 | { | |
1678 | unsigned int count = 0; | |
1679 | for (Output_data_list::const_iterator p = pdl->begin(); | |
1680 | p != pdl->end(); | |
1681 | ++p) | |
1682 | count += (*p)->dynamic_reloc_count(); | |
1683 | return count; | |
1684 | } | |
1685 | ||
75f65a3e | 1686 | // Set the section addresses for an Output_segment. ADDR is the |
ead1e424 ILT |
1687 | // address and *POFF is the file offset. Set the section indexes |
1688 | // starting with *PSHNDX. Return the address of the immediately | |
1689 | // following segment. Update *POFF and *PSHNDX. | |
75f65a3e ILT |
1690 | |
1691 | uint64_t | |
ead1e424 ILT |
1692 | Output_segment::set_section_addresses(uint64_t addr, off_t* poff, |
1693 | unsigned int* pshndx) | |
75f65a3e | 1694 | { |
a3ad94ed | 1695 | gold_assert(this->type_ == elfcpp::PT_LOAD); |
75f65a3e ILT |
1696 | |
1697 | this->vaddr_ = addr; | |
1698 | this->paddr_ = addr; | |
1699 | ||
1700 | off_t orig_off = *poff; | |
1701 | this->offset_ = orig_off; | |
1702 | ||
ead1e424 ILT |
1703 | *poff = align_address(*poff, this->addralign()); |
1704 | ||
1705 | addr = this->set_section_list_addresses(&this->output_data_, addr, poff, | |
1706 | pshndx); | |
75f65a3e ILT |
1707 | this->filesz_ = *poff - orig_off; |
1708 | ||
1709 | off_t off = *poff; | |
1710 | ||
61ba1cf9 | 1711 | uint64_t ret = this->set_section_list_addresses(&this->output_bss_, addr, |
ead1e424 | 1712 | poff, pshndx); |
75f65a3e ILT |
1713 | this->memsz_ = *poff - orig_off; |
1714 | ||
1715 | // Ignore the file offset adjustments made by the BSS Output_data | |
1716 | // objects. | |
1717 | *poff = off; | |
61ba1cf9 ILT |
1718 | |
1719 | return ret; | |
75f65a3e ILT |
1720 | } |
1721 | ||
b8e6aad9 ILT |
1722 | // Set the addresses and file offsets in a list of Output_data |
1723 | // structures. | |
75f65a3e ILT |
1724 | |
1725 | uint64_t | |
1726 | Output_segment::set_section_list_addresses(Output_data_list* pdl, | |
ead1e424 ILT |
1727 | uint64_t addr, off_t* poff, |
1728 | unsigned int* pshndx) | |
75f65a3e | 1729 | { |
ead1e424 | 1730 | off_t startoff = *poff; |
75f65a3e | 1731 | |
ead1e424 | 1732 | off_t off = startoff; |
75f65a3e ILT |
1733 | for (Output_data_list::iterator p = pdl->begin(); |
1734 | p != pdl->end(); | |
1735 | ++p) | |
1736 | { | |
ead1e424 | 1737 | off = align_address(off, (*p)->addralign()); |
27bc2bce | 1738 | (*p)->set_address_and_file_offset(addr + (off - startoff), off); |
ead1e424 ILT |
1739 | |
1740 | // Unless this is a PT_TLS segment, we want to ignore the size | |
1741 | // of a SHF_TLS/SHT_NOBITS section. Such a section does not | |
1742 | // affect the size of a PT_LOAD segment. | |
1743 | if (this->type_ == elfcpp::PT_TLS | |
1744 | || !(*p)->is_section_flag_set(elfcpp::SHF_TLS) | |
1745 | || !(*p)->is_section_type(elfcpp::SHT_NOBITS)) | |
1746 | off += (*p)->data_size(); | |
75f65a3e | 1747 | |
ead1e424 ILT |
1748 | if ((*p)->is_section()) |
1749 | { | |
1750 | (*p)->set_out_shndx(*pshndx); | |
1751 | ++*pshndx; | |
1752 | } | |
75f65a3e ILT |
1753 | } |
1754 | ||
1755 | *poff = off; | |
ead1e424 | 1756 | return addr + (off - startoff); |
75f65a3e ILT |
1757 | } |
1758 | ||
1759 | // For a non-PT_LOAD segment, set the offset from the sections, if | |
1760 | // any. | |
1761 | ||
1762 | void | |
1763 | Output_segment::set_offset() | |
1764 | { | |
a3ad94ed | 1765 | gold_assert(this->type_ != elfcpp::PT_LOAD); |
75f65a3e ILT |
1766 | |
1767 | if (this->output_data_.empty() && this->output_bss_.empty()) | |
1768 | { | |
1769 | this->vaddr_ = 0; | |
1770 | this->paddr_ = 0; | |
1771 | this->memsz_ = 0; | |
1772 | this->align_ = 0; | |
1773 | this->offset_ = 0; | |
1774 | this->filesz_ = 0; | |
1775 | return; | |
1776 | } | |
1777 | ||
1778 | const Output_data* first; | |
1779 | if (this->output_data_.empty()) | |
1780 | first = this->output_bss_.front(); | |
1781 | else | |
1782 | first = this->output_data_.front(); | |
1783 | this->vaddr_ = first->address(); | |
1784 | this->paddr_ = this->vaddr_; | |
1785 | this->offset_ = first->offset(); | |
1786 | ||
1787 | if (this->output_data_.empty()) | |
1788 | this->filesz_ = 0; | |
1789 | else | |
1790 | { | |
1791 | const Output_data* last_data = this->output_data_.back(); | |
1792 | this->filesz_ = (last_data->address() | |
1793 | + last_data->data_size() | |
1794 | - this->vaddr_); | |
1795 | } | |
1796 | ||
1797 | const Output_data* last; | |
1798 | if (this->output_bss_.empty()) | |
1799 | last = this->output_data_.back(); | |
1800 | else | |
1801 | last = this->output_bss_.back(); | |
1802 | this->memsz_ = (last->address() | |
1803 | + last->data_size() | |
1804 | - this->vaddr_); | |
75f65a3e ILT |
1805 | } |
1806 | ||
1807 | // Return the number of Output_sections in an Output_segment. | |
1808 | ||
1809 | unsigned int | |
1810 | Output_segment::output_section_count() const | |
1811 | { | |
1812 | return (this->output_section_count_list(&this->output_data_) | |
1813 | + this->output_section_count_list(&this->output_bss_)); | |
1814 | } | |
1815 | ||
1816 | // Return the number of Output_sections in an Output_data_list. | |
1817 | ||
1818 | unsigned int | |
1819 | Output_segment::output_section_count_list(const Output_data_list* pdl) const | |
1820 | { | |
1821 | unsigned int count = 0; | |
1822 | for (Output_data_list::const_iterator p = pdl->begin(); | |
1823 | p != pdl->end(); | |
1824 | ++p) | |
1825 | { | |
1826 | if ((*p)->is_section()) | |
1827 | ++count; | |
1828 | } | |
1829 | return count; | |
a2fb1b05 ILT |
1830 | } |
1831 | ||
61ba1cf9 ILT |
1832 | // Write the segment data into *OPHDR. |
1833 | ||
1834 | template<int size, bool big_endian> | |
1835 | void | |
ead1e424 | 1836 | Output_segment::write_header(elfcpp::Phdr_write<size, big_endian>* ophdr) |
61ba1cf9 ILT |
1837 | { |
1838 | ophdr->put_p_type(this->type_); | |
1839 | ophdr->put_p_offset(this->offset_); | |
1840 | ophdr->put_p_vaddr(this->vaddr_); | |
1841 | ophdr->put_p_paddr(this->paddr_); | |
1842 | ophdr->put_p_filesz(this->filesz_); | |
1843 | ophdr->put_p_memsz(this->memsz_); | |
1844 | ophdr->put_p_flags(this->flags_); | |
ead1e424 | 1845 | ophdr->put_p_align(this->addralign()); |
61ba1cf9 ILT |
1846 | } |
1847 | ||
1848 | // Write the section headers into V. | |
1849 | ||
1850 | template<int size, bool big_endian> | |
1851 | unsigned char* | |
16649710 ILT |
1852 | Output_segment::write_section_headers(const Layout* layout, |
1853 | const Stringpool* secnamepool, | |
ead1e424 ILT |
1854 | unsigned char* v, |
1855 | unsigned int *pshndx | |
5482377d ILT |
1856 | ACCEPT_SIZE_ENDIAN) const |
1857 | { | |
ead1e424 ILT |
1858 | // Every section that is attached to a segment must be attached to a |
1859 | // PT_LOAD segment, so we only write out section headers for PT_LOAD | |
1860 | // segments. | |
1861 | if (this->type_ != elfcpp::PT_LOAD) | |
1862 | return v; | |
1863 | ||
593f47df ILT |
1864 | v = this->write_section_headers_list |
1865 | SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
16649710 | 1866 | layout, secnamepool, &this->output_data_, v, pshndx |
593f47df ILT |
1867 | SELECT_SIZE_ENDIAN(size, big_endian)); |
1868 | v = this->write_section_headers_list | |
1869 | SELECT_SIZE_ENDIAN_NAME(size, big_endian) ( | |
16649710 | 1870 | layout, secnamepool, &this->output_bss_, v, pshndx |
593f47df | 1871 | SELECT_SIZE_ENDIAN(size, big_endian)); |
61ba1cf9 ILT |
1872 | return v; |
1873 | } | |
1874 | ||
1875 | template<int size, bool big_endian> | |
1876 | unsigned char* | |
16649710 ILT |
1877 | Output_segment::write_section_headers_list(const Layout* layout, |
1878 | const Stringpool* secnamepool, | |
61ba1cf9 | 1879 | const Output_data_list* pdl, |
ead1e424 ILT |
1880 | unsigned char* v, |
1881 | unsigned int* pshndx | |
5482377d | 1882 | ACCEPT_SIZE_ENDIAN) const |
61ba1cf9 ILT |
1883 | { |
1884 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1885 | for (Output_data_list::const_iterator p = pdl->begin(); | |
1886 | p != pdl->end(); | |
1887 | ++p) | |
1888 | { | |
1889 | if ((*p)->is_section()) | |
1890 | { | |
5482377d | 1891 | const Output_section* ps = static_cast<const Output_section*>(*p); |
a3ad94ed | 1892 | gold_assert(*pshndx == ps->out_shndx()); |
61ba1cf9 | 1893 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 1894 | ps->write_header(layout, secnamepool, &oshdr); |
61ba1cf9 | 1895 | v += shdr_size; |
ead1e424 | 1896 | ++*pshndx; |
61ba1cf9 ILT |
1897 | } |
1898 | } | |
1899 | return v; | |
1900 | } | |
1901 | ||
a2fb1b05 ILT |
1902 | // Output_file methods. |
1903 | ||
c51e6221 | 1904 | Output_file::Output_file(const General_options& options, Target* target) |
61ba1cf9 | 1905 | : options_(options), |
c51e6221 | 1906 | target_(target), |
61ba1cf9 ILT |
1907 | name_(options.output_file_name()), |
1908 | o_(-1), | |
1909 | file_size_(0), | |
1910 | base_(NULL) | |
1911 | { | |
1912 | } | |
1913 | ||
1914 | // Open the output file. | |
1915 | ||
a2fb1b05 | 1916 | void |
61ba1cf9 | 1917 | Output_file::open(off_t file_size) |
a2fb1b05 | 1918 | { |
61ba1cf9 ILT |
1919 | this->file_size_ = file_size; |
1920 | ||
4e9d8586 ILT |
1921 | // Unlink the file first; otherwise the open() may fail if the file |
1922 | // is busy (e.g. it's an executable that's currently being executed). | |
1923 | // | |
1924 | // However, the linker may be part of a system where a zero-length | |
1925 | // file is created for it to write to, with tight permissions (gcc | |
1926 | // 2.95 did something like this). Unlinking the file would work | |
1927 | // around those permission controls, so we only unlink if the file | |
1928 | // has a non-zero size. We also unlink only regular files to avoid | |
1929 | // trouble with directories/etc. | |
1930 | // | |
1931 | // If we fail, continue; this command is merely a best-effort attempt | |
1932 | // to improve the odds for open(). | |
1933 | ||
4e9d8586 | 1934 | struct stat s; |
5ffcaa86 ILT |
1935 | if (::stat(this->name_, &s) == 0 && s.st_size != 0) |
1936 | unlink_if_ordinary(this->name_); | |
4e9d8586 | 1937 | |
7e1edb90 | 1938 | int mode = parameters->output_is_object() ? 0666 : 0777; |
61ba1cf9 ILT |
1939 | int o = ::open(this->name_, O_RDWR | O_CREAT | O_TRUNC, mode); |
1940 | if (o < 0) | |
75f2446e | 1941 | gold_fatal(_("%s: open: %s"), this->name_, strerror(errno)); |
61ba1cf9 ILT |
1942 | this->o_ = o; |
1943 | ||
27bc2bce ILT |
1944 | this->map(); |
1945 | } | |
1946 | ||
1947 | // Resize the output file. | |
1948 | ||
1949 | void | |
1950 | Output_file::resize(off_t file_size) | |
1951 | { | |
1952 | if (::munmap(this->base_, this->file_size_) < 0) | |
1953 | gold_error(_("%s: munmap: %s"), this->name_, strerror(errno)); | |
1954 | this->file_size_ = file_size; | |
1955 | this->map(); | |
1956 | } | |
1957 | ||
1958 | // Map the file into memory. | |
1959 | ||
1960 | void | |
1961 | Output_file::map() | |
1962 | { | |
1963 | int o = this->o_; | |
1964 | ||
61ba1cf9 | 1965 | // Write out one byte to make the file the right size. |
27bc2bce | 1966 | if (::lseek(o, this->file_size_ - 1, SEEK_SET) < 0) |
75f2446e | 1967 | gold_fatal(_("%s: lseek: %s"), this->name_, strerror(errno)); |
61ba1cf9 ILT |
1968 | char b = 0; |
1969 | if (::write(o, &b, 1) != 1) | |
75f2446e | 1970 | gold_fatal(_("%s: write: %s"), this->name_, strerror(errno)); |
61ba1cf9 ILT |
1971 | |
1972 | // Map the file into memory. | |
27bc2bce | 1973 | void* base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, |
61ba1cf9 ILT |
1974 | MAP_SHARED, o, 0); |
1975 | if (base == MAP_FAILED) | |
75f2446e | 1976 | gold_fatal(_("%s: mmap: %s"), this->name_, strerror(errno)); |
61ba1cf9 ILT |
1977 | this->base_ = static_cast<unsigned char*>(base); |
1978 | } | |
1979 | ||
1980 | // Close the output file. | |
1981 | ||
1982 | void | |
1983 | Output_file::close() | |
1984 | { | |
1985 | if (::munmap(this->base_, this->file_size_) < 0) | |
a0c4fb0a | 1986 | gold_error(_("%s: munmap: %s"), this->name_, strerror(errno)); |
61ba1cf9 ILT |
1987 | this->base_ = NULL; |
1988 | ||
1989 | if (::close(this->o_) < 0) | |
75f2446e | 1990 | gold_error(_("%s: close: %s"), this->name_, strerror(errno)); |
61ba1cf9 | 1991 | this->o_ = -1; |
a2fb1b05 ILT |
1992 | } |
1993 | ||
1994 | // Instantiate the templates we need. We could use the configure | |
1995 | // script to restrict this to only the ones for implemented targets. | |
1996 | ||
193a53d9 | 1997 | #ifdef HAVE_TARGET_32_LITTLE |
a2fb1b05 ILT |
1998 | template |
1999 | off_t | |
2000 | Output_section::add_input_section<32, false>( | |
730cdc88 | 2001 | Sized_relobj<32, false>* object, |
ead1e424 | 2002 | unsigned int shndx, |
a2fb1b05 | 2003 | const char* secname, |
730cdc88 ILT |
2004 | const elfcpp::Shdr<32, false>& shdr, |
2005 | unsigned int reloc_shndx); | |
193a53d9 | 2006 | #endif |
a2fb1b05 | 2007 | |
193a53d9 | 2008 | #ifdef HAVE_TARGET_32_BIG |
a2fb1b05 ILT |
2009 | template |
2010 | off_t | |
2011 | Output_section::add_input_section<32, true>( | |
730cdc88 | 2012 | Sized_relobj<32, true>* object, |
ead1e424 | 2013 | unsigned int shndx, |
a2fb1b05 | 2014 | const char* secname, |
730cdc88 ILT |
2015 | const elfcpp::Shdr<32, true>& shdr, |
2016 | unsigned int reloc_shndx); | |
193a53d9 | 2017 | #endif |
a2fb1b05 | 2018 | |
193a53d9 | 2019 | #ifdef HAVE_TARGET_64_LITTLE |
a2fb1b05 ILT |
2020 | template |
2021 | off_t | |
2022 | Output_section::add_input_section<64, false>( | |
730cdc88 | 2023 | Sized_relobj<64, false>* object, |
ead1e424 | 2024 | unsigned int shndx, |
a2fb1b05 | 2025 | const char* secname, |
730cdc88 ILT |
2026 | const elfcpp::Shdr<64, false>& shdr, |
2027 | unsigned int reloc_shndx); | |
193a53d9 | 2028 | #endif |
a2fb1b05 | 2029 | |
193a53d9 | 2030 | #ifdef HAVE_TARGET_64_BIG |
a2fb1b05 ILT |
2031 | template |
2032 | off_t | |
2033 | Output_section::add_input_section<64, true>( | |
730cdc88 | 2034 | Sized_relobj<64, true>* object, |
ead1e424 | 2035 | unsigned int shndx, |
a2fb1b05 | 2036 | const char* secname, |
730cdc88 ILT |
2037 | const elfcpp::Shdr<64, true>& shdr, |
2038 | unsigned int reloc_shndx); | |
193a53d9 | 2039 | #endif |
a2fb1b05 | 2040 | |
193a53d9 | 2041 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
2042 | template |
2043 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>; | |
193a53d9 | 2044 | #endif |
c06b7b0b | 2045 | |
193a53d9 | 2046 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
2047 | template |
2048 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, true>; | |
193a53d9 | 2049 | #endif |
c06b7b0b | 2050 | |
193a53d9 | 2051 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
2052 | template |
2053 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, false>; | |
193a53d9 | 2054 | #endif |
c06b7b0b | 2055 | |
193a53d9 | 2056 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
2057 | template |
2058 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, true>; | |
193a53d9 | 2059 | #endif |
c06b7b0b | 2060 | |
193a53d9 | 2061 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
2062 | template |
2063 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, false>; | |
193a53d9 | 2064 | #endif |
c06b7b0b | 2065 | |
193a53d9 | 2066 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
2067 | template |
2068 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, true>; | |
193a53d9 | 2069 | #endif |
c06b7b0b | 2070 | |
193a53d9 | 2071 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
2072 | template |
2073 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, false>; | |
193a53d9 | 2074 | #endif |
c06b7b0b | 2075 | |
193a53d9 | 2076 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
2077 | template |
2078 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, true>; | |
193a53d9 | 2079 | #endif |
c06b7b0b | 2080 | |
193a53d9 | 2081 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
2082 | template |
2083 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
193a53d9 | 2084 | #endif |
c06b7b0b | 2085 | |
193a53d9 | 2086 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
2087 | template |
2088 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
193a53d9 | 2089 | #endif |
c06b7b0b | 2090 | |
193a53d9 | 2091 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
2092 | template |
2093 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
193a53d9 | 2094 | #endif |
c06b7b0b | 2095 | |
193a53d9 | 2096 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
2097 | template |
2098 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
193a53d9 | 2099 | #endif |
c06b7b0b | 2100 | |
193a53d9 | 2101 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
2102 | template |
2103 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
193a53d9 | 2104 | #endif |
c06b7b0b | 2105 | |
193a53d9 | 2106 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
2107 | template |
2108 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
193a53d9 | 2109 | #endif |
c06b7b0b | 2110 | |
193a53d9 | 2111 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
2112 | template |
2113 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
193a53d9 | 2114 | #endif |
c06b7b0b | 2115 | |
193a53d9 | 2116 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
2117 | template |
2118 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
193a53d9 | 2119 | #endif |
c06b7b0b | 2120 | |
193a53d9 | 2121 | #ifdef HAVE_TARGET_32_LITTLE |
ead1e424 | 2122 | template |
dbe717ef | 2123 | class Output_data_got<32, false>; |
193a53d9 | 2124 | #endif |
ead1e424 | 2125 | |
193a53d9 | 2126 | #ifdef HAVE_TARGET_32_BIG |
ead1e424 | 2127 | template |
dbe717ef | 2128 | class Output_data_got<32, true>; |
193a53d9 | 2129 | #endif |
ead1e424 | 2130 | |
193a53d9 | 2131 | #ifdef HAVE_TARGET_64_LITTLE |
ead1e424 | 2132 | template |
dbe717ef | 2133 | class Output_data_got<64, false>; |
193a53d9 | 2134 | #endif |
ead1e424 | 2135 | |
193a53d9 | 2136 | #ifdef HAVE_TARGET_64_BIG |
ead1e424 | 2137 | template |
dbe717ef | 2138 | class Output_data_got<64, true>; |
193a53d9 | 2139 | #endif |
ead1e424 | 2140 | |
a2fb1b05 | 2141 | } // End namespace gold. |