Commit | Line | Data |
---|---|---|
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" |
a2fb1b05 | 35 | #include "object.h" |
ead1e424 ILT |
36 | #include "symtab.h" |
37 | #include "reloc.h" | |
b8e6aad9 | 38 | #include "merge.h" |
a2fb1b05 ILT |
39 | #include "output.h" |
40 | ||
c420411f ILT |
41 | // Some BSD systems still use MAP_ANON instead of MAP_ANONYMOUS |
42 | #ifndef MAP_ANONYMOUS | |
43 | # define MAP_ANONYMOUS MAP_ANON | |
44 | #endif | |
45 | ||
a2fb1b05 ILT |
46 | namespace gold |
47 | { | |
48 | ||
a3ad94ed ILT |
49 | // Output_data variables. |
50 | ||
27bc2bce | 51 | bool Output_data::allocated_sizes_are_fixed; |
a3ad94ed | 52 | |
a2fb1b05 ILT |
53 | // Output_data methods. |
54 | ||
55 | Output_data::~Output_data() | |
56 | { | |
57 | } | |
58 | ||
730cdc88 ILT |
59 | // Return the default alignment for the target size. |
60 | ||
61 | uint64_t | |
62 | Output_data::default_alignment() | |
63 | { | |
8851ecca ILT |
64 | return Output_data::default_alignment_for_size( |
65 | parameters->target().get_size()); | |
730cdc88 ILT |
66 | } |
67 | ||
75f65a3e ILT |
68 | // Return the default alignment for a size--32 or 64. |
69 | ||
70 | uint64_t | |
730cdc88 | 71 | Output_data::default_alignment_for_size(int size) |
75f65a3e ILT |
72 | { |
73 | if (size == 32) | |
74 | return 4; | |
75 | else if (size == 64) | |
76 | return 8; | |
77 | else | |
a3ad94ed | 78 | gold_unreachable(); |
75f65a3e ILT |
79 | } |
80 | ||
75f65a3e ILT |
81 | // Output_section_header methods. This currently assumes that the |
82 | // segment and section lists are complete at construction time. | |
83 | ||
84 | Output_section_headers::Output_section_headers( | |
16649710 ILT |
85 | const Layout* layout, |
86 | const Layout::Segment_list* segment_list, | |
6a74a719 | 87 | const Layout::Section_list* section_list, |
16649710 | 88 | const Layout::Section_list* unattached_section_list, |
61ba1cf9 | 89 | const Stringpool* secnamepool) |
9025d29d | 90 | : layout_(layout), |
75f65a3e | 91 | segment_list_(segment_list), |
6a74a719 | 92 | section_list_(section_list), |
a3ad94ed | 93 | unattached_section_list_(unattached_section_list), |
61ba1cf9 | 94 | secnamepool_(secnamepool) |
75f65a3e | 95 | { |
61ba1cf9 ILT |
96 | // Count all the sections. Start with 1 for the null section. |
97 | off_t count = 1; | |
8851ecca | 98 | if (!parameters->options().relocatable()) |
6a74a719 ILT |
99 | { |
100 | for (Layout::Segment_list::const_iterator p = segment_list->begin(); | |
101 | p != segment_list->end(); | |
102 | ++p) | |
103 | if ((*p)->type() == elfcpp::PT_LOAD) | |
104 | count += (*p)->output_section_count(); | |
105 | } | |
106 | else | |
107 | { | |
108 | for (Layout::Section_list::const_iterator p = section_list->begin(); | |
109 | p != section_list->end(); | |
110 | ++p) | |
111 | if (((*p)->flags() & elfcpp::SHF_ALLOC) != 0) | |
112 | ++count; | |
113 | } | |
16649710 | 114 | count += unattached_section_list->size(); |
75f65a3e | 115 | |
8851ecca | 116 | const int size = parameters->target().get_size(); |
75f65a3e ILT |
117 | int shdr_size; |
118 | if (size == 32) | |
119 | shdr_size = elfcpp::Elf_sizes<32>::shdr_size; | |
120 | else if (size == 64) | |
121 | shdr_size = elfcpp::Elf_sizes<64>::shdr_size; | |
122 | else | |
a3ad94ed | 123 | gold_unreachable(); |
75f65a3e ILT |
124 | |
125 | this->set_data_size(count * shdr_size); | |
126 | } | |
127 | ||
61ba1cf9 ILT |
128 | // Write out the section headers. |
129 | ||
75f65a3e | 130 | void |
61ba1cf9 | 131 | Output_section_headers::do_write(Output_file* of) |
a2fb1b05 | 132 | { |
8851ecca | 133 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 134 | { |
9025d29d | 135 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
136 | case Parameters::TARGET_32_LITTLE: |
137 | this->do_sized_write<32, false>(of); | |
138 | break; | |
9025d29d | 139 | #endif |
8851ecca ILT |
140 | #ifdef HAVE_TARGET_32_BIG |
141 | case Parameters::TARGET_32_BIG: | |
142 | this->do_sized_write<32, true>(of); | |
143 | break; | |
9025d29d | 144 | #endif |
9025d29d | 145 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
146 | case Parameters::TARGET_64_LITTLE: |
147 | this->do_sized_write<64, false>(of); | |
148 | break; | |
9025d29d | 149 | #endif |
8851ecca ILT |
150 | #ifdef HAVE_TARGET_64_BIG |
151 | case Parameters::TARGET_64_BIG: | |
152 | this->do_sized_write<64, true>(of); | |
153 | break; | |
154 | #endif | |
155 | default: | |
156 | gold_unreachable(); | |
61ba1cf9 | 157 | } |
61ba1cf9 ILT |
158 | } |
159 | ||
160 | template<int size, bool big_endian> | |
161 | void | |
162 | Output_section_headers::do_sized_write(Output_file* of) | |
163 | { | |
164 | off_t all_shdrs_size = this->data_size(); | |
165 | unsigned char* view = of->get_output_view(this->offset(), all_shdrs_size); | |
166 | ||
167 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
168 | unsigned char* v = view; | |
169 | ||
170 | { | |
171 | typename elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
172 | oshdr.put_sh_name(0); | |
173 | oshdr.put_sh_type(elfcpp::SHT_NULL); | |
174 | oshdr.put_sh_flags(0); | |
175 | oshdr.put_sh_addr(0); | |
176 | oshdr.put_sh_offset(0); | |
177 | oshdr.put_sh_size(0); | |
178 | oshdr.put_sh_link(0); | |
179 | oshdr.put_sh_info(0); | |
180 | oshdr.put_sh_addralign(0); | |
181 | oshdr.put_sh_entsize(0); | |
182 | } | |
183 | ||
184 | v += shdr_size; | |
185 | ||
6a74a719 | 186 | unsigned int shndx = 1; |
8851ecca | 187 | if (!parameters->options().relocatable()) |
6a74a719 ILT |
188 | { |
189 | for (Layout::Segment_list::const_iterator p = | |
190 | this->segment_list_->begin(); | |
191 | p != this->segment_list_->end(); | |
192 | ++p) | |
193 | v = (*p)->write_section_headers<size, big_endian>(this->layout_, | |
194 | this->secnamepool_, | |
195 | v, | |
196 | &shndx); | |
197 | } | |
198 | else | |
199 | { | |
200 | for (Layout::Section_list::const_iterator p = | |
201 | this->section_list_->begin(); | |
202 | p != this->section_list_->end(); | |
203 | ++p) | |
204 | { | |
205 | // We do unallocated sections below, except that group | |
206 | // sections have to come first. | |
207 | if (((*p)->flags() & elfcpp::SHF_ALLOC) == 0 | |
208 | && (*p)->type() != elfcpp::SHT_GROUP) | |
209 | continue; | |
210 | gold_assert(shndx == (*p)->out_shndx()); | |
211 | elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
212 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); | |
213 | v += shdr_size; | |
214 | ++shndx; | |
215 | } | |
216 | } | |
217 | ||
a3ad94ed | 218 | for (Layout::Section_list::const_iterator p = |
16649710 ILT |
219 | this->unattached_section_list_->begin(); |
220 | p != this->unattached_section_list_->end(); | |
61ba1cf9 ILT |
221 | ++p) |
222 | { | |
6a74a719 ILT |
223 | // For a relocatable link, we did unallocated group sections |
224 | // above, since they have to come first. | |
225 | if ((*p)->type() == elfcpp::SHT_GROUP | |
8851ecca | 226 | && parameters->options().relocatable()) |
6a74a719 | 227 | continue; |
a3ad94ed | 228 | gold_assert(shndx == (*p)->out_shndx()); |
61ba1cf9 | 229 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 230 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); |
61ba1cf9 | 231 | v += shdr_size; |
ead1e424 | 232 | ++shndx; |
61ba1cf9 ILT |
233 | } |
234 | ||
235 | of->write_output_view(this->offset(), all_shdrs_size, view); | |
a2fb1b05 ILT |
236 | } |
237 | ||
54dc6425 ILT |
238 | // Output_segment_header methods. |
239 | ||
61ba1cf9 | 240 | Output_segment_headers::Output_segment_headers( |
61ba1cf9 | 241 | const Layout::Segment_list& segment_list) |
9025d29d | 242 | : segment_list_(segment_list) |
61ba1cf9 | 243 | { |
8851ecca | 244 | const int size = parameters->target().get_size(); |
61ba1cf9 ILT |
245 | int phdr_size; |
246 | if (size == 32) | |
247 | phdr_size = elfcpp::Elf_sizes<32>::phdr_size; | |
248 | else if (size == 64) | |
249 | phdr_size = elfcpp::Elf_sizes<64>::phdr_size; | |
250 | else | |
a3ad94ed | 251 | gold_unreachable(); |
61ba1cf9 ILT |
252 | |
253 | this->set_data_size(segment_list.size() * phdr_size); | |
254 | } | |
255 | ||
54dc6425 | 256 | void |
61ba1cf9 | 257 | Output_segment_headers::do_write(Output_file* of) |
75f65a3e | 258 | { |
8851ecca | 259 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 260 | { |
9025d29d | 261 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
262 | case Parameters::TARGET_32_LITTLE: |
263 | this->do_sized_write<32, false>(of); | |
264 | break; | |
9025d29d | 265 | #endif |
8851ecca ILT |
266 | #ifdef HAVE_TARGET_32_BIG |
267 | case Parameters::TARGET_32_BIG: | |
268 | this->do_sized_write<32, true>(of); | |
269 | break; | |
9025d29d | 270 | #endif |
9025d29d | 271 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
272 | case Parameters::TARGET_64_LITTLE: |
273 | this->do_sized_write<64, false>(of); | |
274 | break; | |
9025d29d | 275 | #endif |
8851ecca ILT |
276 | #ifdef HAVE_TARGET_64_BIG |
277 | case Parameters::TARGET_64_BIG: | |
278 | this->do_sized_write<64, true>(of); | |
279 | break; | |
280 | #endif | |
281 | default: | |
282 | gold_unreachable(); | |
61ba1cf9 | 283 | } |
61ba1cf9 ILT |
284 | } |
285 | ||
286 | template<int size, bool big_endian> | |
287 | void | |
288 | Output_segment_headers::do_sized_write(Output_file* of) | |
289 | { | |
290 | const int phdr_size = elfcpp::Elf_sizes<size>::phdr_size; | |
291 | off_t all_phdrs_size = this->segment_list_.size() * phdr_size; | |
a445fddf | 292 | gold_assert(all_phdrs_size == this->data_size()); |
61ba1cf9 ILT |
293 | unsigned char* view = of->get_output_view(this->offset(), |
294 | all_phdrs_size); | |
295 | unsigned char* v = view; | |
296 | for (Layout::Segment_list::const_iterator p = this->segment_list_.begin(); | |
297 | p != this->segment_list_.end(); | |
298 | ++p) | |
299 | { | |
300 | elfcpp::Phdr_write<size, big_endian> ophdr(v); | |
301 | (*p)->write_header(&ophdr); | |
302 | v += phdr_size; | |
303 | } | |
304 | ||
a445fddf ILT |
305 | gold_assert(v - view == all_phdrs_size); |
306 | ||
61ba1cf9 | 307 | of->write_output_view(this->offset(), all_phdrs_size, view); |
75f65a3e ILT |
308 | } |
309 | ||
310 | // Output_file_header methods. | |
311 | ||
9025d29d | 312 | Output_file_header::Output_file_header(const Target* target, |
75f65a3e | 313 | const Symbol_table* symtab, |
d391083d ILT |
314 | const Output_segment_headers* osh, |
315 | const char* entry) | |
9025d29d | 316 | : target_(target), |
75f65a3e | 317 | symtab_(symtab), |
61ba1cf9 | 318 | segment_header_(osh), |
75f65a3e | 319 | section_header_(NULL), |
d391083d ILT |
320 | shstrtab_(NULL), |
321 | entry_(entry) | |
75f65a3e | 322 | { |
8851ecca | 323 | const int size = parameters->target().get_size(); |
61ba1cf9 ILT |
324 | int ehdr_size; |
325 | if (size == 32) | |
326 | ehdr_size = elfcpp::Elf_sizes<32>::ehdr_size; | |
327 | else if (size == 64) | |
328 | ehdr_size = elfcpp::Elf_sizes<64>::ehdr_size; | |
329 | else | |
a3ad94ed | 330 | gold_unreachable(); |
61ba1cf9 ILT |
331 | |
332 | this->set_data_size(ehdr_size); | |
75f65a3e ILT |
333 | } |
334 | ||
335 | // Set the section table information for a file header. | |
336 | ||
337 | void | |
338 | Output_file_header::set_section_info(const Output_section_headers* shdrs, | |
339 | const Output_section* shstrtab) | |
340 | { | |
341 | this->section_header_ = shdrs; | |
342 | this->shstrtab_ = shstrtab; | |
343 | } | |
344 | ||
345 | // Write out the file header. | |
346 | ||
347 | void | |
61ba1cf9 | 348 | Output_file_header::do_write(Output_file* of) |
54dc6425 | 349 | { |
27bc2bce ILT |
350 | gold_assert(this->offset() == 0); |
351 | ||
8851ecca | 352 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 353 | { |
9025d29d | 354 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
355 | case Parameters::TARGET_32_LITTLE: |
356 | this->do_sized_write<32, false>(of); | |
357 | break; | |
9025d29d | 358 | #endif |
8851ecca ILT |
359 | #ifdef HAVE_TARGET_32_BIG |
360 | case Parameters::TARGET_32_BIG: | |
361 | this->do_sized_write<32, true>(of); | |
362 | break; | |
9025d29d | 363 | #endif |
9025d29d | 364 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
365 | case Parameters::TARGET_64_LITTLE: |
366 | this->do_sized_write<64, false>(of); | |
367 | break; | |
9025d29d | 368 | #endif |
8851ecca ILT |
369 | #ifdef HAVE_TARGET_64_BIG |
370 | case Parameters::TARGET_64_BIG: | |
371 | this->do_sized_write<64, true>(of); | |
372 | break; | |
373 | #endif | |
374 | default: | |
375 | gold_unreachable(); | |
61ba1cf9 | 376 | } |
61ba1cf9 ILT |
377 | } |
378 | ||
379 | // Write out the file header with appropriate size and endianess. | |
380 | ||
381 | template<int size, bool big_endian> | |
382 | void | |
383 | Output_file_header::do_sized_write(Output_file* of) | |
384 | { | |
a3ad94ed | 385 | gold_assert(this->offset() == 0); |
61ba1cf9 ILT |
386 | |
387 | int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size; | |
388 | unsigned char* view = of->get_output_view(0, ehdr_size); | |
389 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
390 | ||
391 | unsigned char e_ident[elfcpp::EI_NIDENT]; | |
392 | memset(e_ident, 0, elfcpp::EI_NIDENT); | |
393 | e_ident[elfcpp::EI_MAG0] = elfcpp::ELFMAG0; | |
394 | e_ident[elfcpp::EI_MAG1] = elfcpp::ELFMAG1; | |
395 | e_ident[elfcpp::EI_MAG2] = elfcpp::ELFMAG2; | |
396 | e_ident[elfcpp::EI_MAG3] = elfcpp::ELFMAG3; | |
397 | if (size == 32) | |
398 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS32; | |
399 | else if (size == 64) | |
400 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS64; | |
401 | else | |
a3ad94ed | 402 | gold_unreachable(); |
61ba1cf9 ILT |
403 | e_ident[elfcpp::EI_DATA] = (big_endian |
404 | ? elfcpp::ELFDATA2MSB | |
405 | : elfcpp::ELFDATA2LSB); | |
406 | e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT; | |
407 | // FIXME: Some targets may need to set EI_OSABI and EI_ABIVERSION. | |
408 | oehdr.put_e_ident(e_ident); | |
409 | ||
410 | elfcpp::ET e_type; | |
8851ecca | 411 | if (parameters->options().relocatable()) |
61ba1cf9 | 412 | e_type = elfcpp::ET_REL; |
8851ecca | 413 | else if (parameters->options().shared()) |
436ca963 | 414 | e_type = elfcpp::ET_DYN; |
61ba1cf9 ILT |
415 | else |
416 | e_type = elfcpp::ET_EXEC; | |
417 | oehdr.put_e_type(e_type); | |
418 | ||
419 | oehdr.put_e_machine(this->target_->machine_code()); | |
420 | oehdr.put_e_version(elfcpp::EV_CURRENT); | |
421 | ||
d391083d | 422 | oehdr.put_e_entry(this->entry<size>()); |
61ba1cf9 | 423 | |
6a74a719 ILT |
424 | if (this->segment_header_ == NULL) |
425 | oehdr.put_e_phoff(0); | |
426 | else | |
427 | oehdr.put_e_phoff(this->segment_header_->offset()); | |
428 | ||
61ba1cf9 ILT |
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); | |
6a74a719 ILT |
435 | |
436 | if (this->segment_header_ == NULL) | |
437 | { | |
438 | oehdr.put_e_phentsize(0); | |
439 | oehdr.put_e_phnum(0); | |
440 | } | |
441 | else | |
442 | { | |
443 | oehdr.put_e_phentsize(elfcpp::Elf_sizes<size>::phdr_size); | |
444 | oehdr.put_e_phnum(this->segment_header_->data_size() | |
445 | / elfcpp::Elf_sizes<size>::phdr_size); | |
446 | } | |
447 | ||
61ba1cf9 ILT |
448 | oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size); |
449 | oehdr.put_e_shnum(this->section_header_->data_size() | |
450 | / elfcpp::Elf_sizes<size>::shdr_size); | |
ead1e424 | 451 | oehdr.put_e_shstrndx(this->shstrtab_->out_shndx()); |
61ba1cf9 ILT |
452 | |
453 | of->write_output_view(0, ehdr_size, view); | |
54dc6425 ILT |
454 | } |
455 | ||
d391083d ILT |
456 | // Return the value to use for the entry address. THIS->ENTRY_ is the |
457 | // symbol specified on the command line, if any. | |
458 | ||
459 | template<int size> | |
460 | typename elfcpp::Elf_types<size>::Elf_Addr | |
461 | Output_file_header::entry() | |
462 | { | |
463 | const bool should_issue_warning = (this->entry_ != NULL | |
8851ecca ILT |
464 | && !parameters->options().relocatable() |
465 | && !parameters->options().shared()); | |
d391083d ILT |
466 | |
467 | // FIXME: Need to support target specific entry symbol. | |
468 | const char* entry = this->entry_; | |
469 | if (entry == NULL) | |
470 | entry = "_start"; | |
471 | ||
472 | Symbol* sym = this->symtab_->lookup(entry); | |
473 | ||
474 | typename Sized_symbol<size>::Value_type v; | |
475 | if (sym != NULL) | |
476 | { | |
477 | Sized_symbol<size>* ssym; | |
478 | ssym = this->symtab_->get_sized_symbol<size>(sym); | |
479 | if (!ssym->is_defined() && should_issue_warning) | |
480 | gold_warning("entry symbol '%s' exists but is not defined", entry); | |
481 | v = ssym->value(); | |
482 | } | |
483 | else | |
484 | { | |
485 | // We couldn't find the entry symbol. See if we can parse it as | |
486 | // a number. This supports, e.g., -e 0x1000. | |
487 | char* endptr; | |
488 | v = strtoull(entry, &endptr, 0); | |
489 | if (*endptr != '\0') | |
490 | { | |
491 | if (should_issue_warning) | |
492 | gold_warning("cannot find entry symbol '%s'", entry); | |
493 | v = 0; | |
494 | } | |
495 | } | |
496 | ||
497 | return v; | |
498 | } | |
499 | ||
dbe717ef ILT |
500 | // Output_data_const methods. |
501 | ||
502 | void | |
a3ad94ed | 503 | Output_data_const::do_write(Output_file* of) |
dbe717ef | 504 | { |
a3ad94ed ILT |
505 | of->write(this->offset(), this->data_.data(), this->data_.size()); |
506 | } | |
507 | ||
508 | // Output_data_const_buffer methods. | |
509 | ||
510 | void | |
511 | Output_data_const_buffer::do_write(Output_file* of) | |
512 | { | |
513 | of->write(this->offset(), this->p_, this->data_size()); | |
dbe717ef ILT |
514 | } |
515 | ||
516 | // Output_section_data methods. | |
517 | ||
16649710 ILT |
518 | // Record the output section, and set the entry size and such. |
519 | ||
520 | void | |
521 | Output_section_data::set_output_section(Output_section* os) | |
522 | { | |
523 | gold_assert(this->output_section_ == NULL); | |
524 | this->output_section_ = os; | |
525 | this->do_adjust_output_section(os); | |
526 | } | |
527 | ||
528 | // Return the section index of the output section. | |
529 | ||
dbe717ef ILT |
530 | unsigned int |
531 | Output_section_data::do_out_shndx() const | |
532 | { | |
a3ad94ed | 533 | gold_assert(this->output_section_ != NULL); |
dbe717ef ILT |
534 | return this->output_section_->out_shndx(); |
535 | } | |
536 | ||
a3ad94ed ILT |
537 | // Output_data_strtab methods. |
538 | ||
27bc2bce | 539 | // Set the final data size. |
a3ad94ed ILT |
540 | |
541 | void | |
27bc2bce | 542 | Output_data_strtab::set_final_data_size() |
a3ad94ed ILT |
543 | { |
544 | this->strtab_->set_string_offsets(); | |
545 | this->set_data_size(this->strtab_->get_strtab_size()); | |
546 | } | |
547 | ||
548 | // Write out a string table. | |
549 | ||
550 | void | |
551 | Output_data_strtab::do_write(Output_file* of) | |
552 | { | |
553 | this->strtab_->write(of, this->offset()); | |
554 | } | |
555 | ||
c06b7b0b ILT |
556 | // Output_reloc methods. |
557 | ||
7bf1f802 ILT |
558 | // A reloc against a global symbol. |
559 | ||
560 | template<bool dynamic, int size, bool big_endian> | |
561 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
562 | Symbol* gsym, | |
563 | unsigned int type, | |
564 | Output_data* od, | |
e8c846c3 ILT |
565 | Address address, |
566 | bool is_relative) | |
7bf1f802 | 567 | : address_(address), local_sym_index_(GSYM_CODE), type_(type), |
dceae3c1 | 568 | is_relative_(is_relative), is_section_symbol_(false), shndx_(INVALID_CODE) |
7bf1f802 | 569 | { |
dceae3c1 ILT |
570 | // this->type_ is a bitfield; make sure TYPE fits. |
571 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
572 | this->u1_.gsym = gsym; |
573 | this->u2_.od = od; | |
dceae3c1 ILT |
574 | if (dynamic) |
575 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
576 | } |
577 | ||
578 | template<bool dynamic, int size, bool big_endian> | |
579 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
580 | Symbol* gsym, | |
581 | unsigned int type, | |
582 | Relobj* relobj, | |
583 | unsigned int shndx, | |
e8c846c3 ILT |
584 | Address address, |
585 | bool is_relative) | |
7bf1f802 | 586 | : address_(address), local_sym_index_(GSYM_CODE), type_(type), |
dceae3c1 | 587 | is_relative_(is_relative), is_section_symbol_(false), shndx_(shndx) |
7bf1f802 ILT |
588 | { |
589 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
590 | // this->type_ is a bitfield; make sure TYPE fits. |
591 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
592 | this->u1_.gsym = gsym; |
593 | this->u2_.relobj = relobj; | |
dceae3c1 ILT |
594 | if (dynamic) |
595 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
596 | } |
597 | ||
598 | // A reloc against a local symbol. | |
599 | ||
600 | template<bool dynamic, int size, bool big_endian> | |
601 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
602 | Sized_relobj<size, big_endian>* relobj, | |
603 | unsigned int local_sym_index, | |
604 | unsigned int type, | |
605 | Output_data* od, | |
e8c846c3 | 606 | Address address, |
dceae3c1 ILT |
607 | bool is_relative, |
608 | bool is_section_symbol) | |
7bf1f802 | 609 | : address_(address), local_sym_index_(local_sym_index), type_(type), |
dceae3c1 ILT |
610 | is_relative_(is_relative), is_section_symbol_(is_section_symbol), |
611 | shndx_(INVALID_CODE) | |
7bf1f802 ILT |
612 | { |
613 | gold_assert(local_sym_index != GSYM_CODE | |
614 | && local_sym_index != INVALID_CODE); | |
dceae3c1 ILT |
615 | // this->type_ is a bitfield; make sure TYPE fits. |
616 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
617 | this->u1_.relobj = relobj; |
618 | this->u2_.od = od; | |
dceae3c1 ILT |
619 | if (dynamic) |
620 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
621 | } |
622 | ||
623 | template<bool dynamic, int size, bool big_endian> | |
624 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
625 | Sized_relobj<size, big_endian>* relobj, | |
626 | unsigned int local_sym_index, | |
627 | unsigned int type, | |
628 | unsigned int shndx, | |
e8c846c3 | 629 | Address address, |
dceae3c1 ILT |
630 | bool is_relative, |
631 | bool is_section_symbol) | |
7bf1f802 | 632 | : address_(address), local_sym_index_(local_sym_index), type_(type), |
dceae3c1 ILT |
633 | is_relative_(is_relative), is_section_symbol_(is_section_symbol), |
634 | shndx_(shndx) | |
7bf1f802 ILT |
635 | { |
636 | gold_assert(local_sym_index != GSYM_CODE | |
637 | && local_sym_index != INVALID_CODE); | |
638 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
639 | // this->type_ is a bitfield; make sure TYPE fits. |
640 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
641 | this->u1_.relobj = relobj; |
642 | this->u2_.relobj = relobj; | |
dceae3c1 ILT |
643 | if (dynamic) |
644 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
645 | } |
646 | ||
647 | // A reloc against the STT_SECTION symbol of an output section. | |
648 | ||
649 | template<bool dynamic, int size, bool big_endian> | |
650 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
651 | Output_section* os, | |
652 | unsigned int type, | |
653 | Output_data* od, | |
654 | Address address) | |
655 | : address_(address), local_sym_index_(SECTION_CODE), type_(type), | |
dceae3c1 | 656 | is_relative_(false), is_section_symbol_(true), shndx_(INVALID_CODE) |
7bf1f802 | 657 | { |
dceae3c1 ILT |
658 | // this->type_ is a bitfield; make sure TYPE fits. |
659 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
660 | this->u1_.os = os; |
661 | this->u2_.od = od; | |
662 | if (dynamic) | |
dceae3c1 ILT |
663 | this->set_needs_dynsym_index(); |
664 | else | |
665 | os->set_needs_symtab_index(); | |
7bf1f802 ILT |
666 | } |
667 | ||
668 | template<bool dynamic, int size, bool big_endian> | |
669 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
670 | Output_section* os, | |
671 | unsigned int type, | |
672 | Relobj* relobj, | |
673 | unsigned int shndx, | |
674 | Address address) | |
675 | : address_(address), local_sym_index_(SECTION_CODE), type_(type), | |
dceae3c1 | 676 | is_relative_(false), is_section_symbol_(true), shndx_(shndx) |
7bf1f802 ILT |
677 | { |
678 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
679 | // this->type_ is a bitfield; make sure TYPE fits. |
680 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
681 | this->u1_.os = os; |
682 | this->u2_.relobj = relobj; | |
683 | if (dynamic) | |
dceae3c1 ILT |
684 | this->set_needs_dynsym_index(); |
685 | else | |
686 | os->set_needs_symtab_index(); | |
687 | } | |
688 | ||
689 | // Record that we need a dynamic symbol index for this relocation. | |
690 | ||
691 | template<bool dynamic, int size, bool big_endian> | |
692 | void | |
693 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: | |
694 | set_needs_dynsym_index() | |
695 | { | |
696 | if (this->is_relative_) | |
697 | return; | |
698 | switch (this->local_sym_index_) | |
699 | { | |
700 | case INVALID_CODE: | |
701 | gold_unreachable(); | |
702 | ||
703 | case GSYM_CODE: | |
704 | this->u1_.gsym->set_needs_dynsym_entry(); | |
705 | break; | |
706 | ||
707 | case SECTION_CODE: | |
708 | this->u1_.os->set_needs_dynsym_index(); | |
709 | break; | |
710 | ||
711 | case 0: | |
712 | break; | |
713 | ||
714 | default: | |
715 | { | |
716 | const unsigned int lsi = this->local_sym_index_; | |
717 | if (!this->is_section_symbol_) | |
718 | this->u1_.relobj->set_needs_output_dynsym_entry(lsi); | |
719 | else | |
720 | { | |
721 | section_offset_type dummy; | |
722 | Output_section* os = this->u1_.relobj->output_section(lsi, &dummy); | |
723 | gold_assert(os != NULL); | |
724 | os->set_needs_dynsym_index(); | |
725 | } | |
726 | } | |
727 | break; | |
728 | } | |
7bf1f802 ILT |
729 | } |
730 | ||
c06b7b0b ILT |
731 | // Get the symbol index of a relocation. |
732 | ||
733 | template<bool dynamic, int size, bool big_endian> | |
734 | unsigned int | |
735 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_symbol_index() | |
736 | const | |
737 | { | |
738 | unsigned int index; | |
739 | switch (this->local_sym_index_) | |
740 | { | |
741 | case INVALID_CODE: | |
a3ad94ed | 742 | gold_unreachable(); |
c06b7b0b ILT |
743 | |
744 | case GSYM_CODE: | |
5a6f7e2d | 745 | if (this->u1_.gsym == NULL) |
c06b7b0b ILT |
746 | index = 0; |
747 | else if (dynamic) | |
5a6f7e2d | 748 | index = this->u1_.gsym->dynsym_index(); |
c06b7b0b | 749 | else |
5a6f7e2d | 750 | index = this->u1_.gsym->symtab_index(); |
c06b7b0b ILT |
751 | break; |
752 | ||
753 | case SECTION_CODE: | |
754 | if (dynamic) | |
5a6f7e2d | 755 | index = this->u1_.os->dynsym_index(); |
c06b7b0b | 756 | else |
5a6f7e2d | 757 | index = this->u1_.os->symtab_index(); |
c06b7b0b ILT |
758 | break; |
759 | ||
436ca963 ILT |
760 | case 0: |
761 | // Relocations without symbols use a symbol index of 0. | |
762 | index = 0; | |
763 | break; | |
764 | ||
c06b7b0b | 765 | default: |
dceae3c1 ILT |
766 | { |
767 | const unsigned int lsi = this->local_sym_index_; | |
768 | if (!this->is_section_symbol_) | |
769 | { | |
770 | if (dynamic) | |
771 | index = this->u1_.relobj->dynsym_index(lsi); | |
772 | else | |
773 | index = this->u1_.relobj->symtab_index(lsi); | |
774 | } | |
775 | else | |
776 | { | |
777 | section_offset_type dummy; | |
778 | Output_section* os = this->u1_.relobj->output_section(lsi, &dummy); | |
779 | gold_assert(os != NULL); | |
780 | if (dynamic) | |
781 | index = os->dynsym_index(); | |
782 | else | |
783 | index = os->symtab_index(); | |
784 | } | |
785 | } | |
c06b7b0b ILT |
786 | break; |
787 | } | |
a3ad94ed | 788 | gold_assert(index != -1U); |
c06b7b0b ILT |
789 | return index; |
790 | } | |
791 | ||
dceae3c1 ILT |
792 | // For a local section symbol, get the section offset of the input |
793 | // section within the output section. | |
794 | ||
795 | template<bool dynamic, int size, bool big_endian> | |
796 | section_offset_type | |
797 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: | |
798 | local_section_offset() const | |
799 | { | |
800 | const unsigned int lsi = this->local_sym_index_; | |
801 | section_offset_type offset; | |
802 | Output_section* os = this->u1_.relobj->output_section(lsi, &offset); | |
803 | gold_assert(os != NULL); | |
804 | return offset; | |
805 | } | |
806 | ||
c06b7b0b ILT |
807 | // Write out the offset and info fields of a Rel or Rela relocation |
808 | // entry. | |
809 | ||
810 | template<bool dynamic, int size, bool big_endian> | |
811 | template<typename Write_rel> | |
812 | void | |
813 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write_rel( | |
814 | Write_rel* wr) const | |
815 | { | |
a3ad94ed | 816 | Address address = this->address_; |
5a6f7e2d ILT |
817 | if (this->shndx_ != INVALID_CODE) |
818 | { | |
8383303e | 819 | section_offset_type off; |
5a6f7e2d ILT |
820 | Output_section* os = this->u2_.relobj->output_section(this->shndx_, |
821 | &off); | |
822 | gold_assert(os != NULL); | |
730cdc88 ILT |
823 | if (off != -1) |
824 | address += os->address() + off; | |
825 | else | |
826 | { | |
827 | address = os->output_address(this->u2_.relobj, this->shndx_, | |
828 | address); | |
829 | gold_assert(address != -1U); | |
830 | } | |
5a6f7e2d ILT |
831 | } |
832 | else if (this->u2_.od != NULL) | |
833 | address += this->u2_.od->address(); | |
a3ad94ed | 834 | wr->put_r_offset(address); |
e8c846c3 ILT |
835 | unsigned int sym_index = this->is_relative_ ? 0 : this->get_symbol_index(); |
836 | wr->put_r_info(elfcpp::elf_r_info<size>(sym_index, this->type_)); | |
c06b7b0b ILT |
837 | } |
838 | ||
839 | // Write out a Rel relocation. | |
840 | ||
841 | template<bool dynamic, int size, bool big_endian> | |
842 | void | |
843 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write( | |
844 | unsigned char* pov) const | |
845 | { | |
846 | elfcpp::Rel_write<size, big_endian> orel(pov); | |
847 | this->write_rel(&orel); | |
848 | } | |
849 | ||
e8c846c3 ILT |
850 | // Get the value of the symbol referred to by a Rel relocation. |
851 | ||
852 | template<bool dynamic, int size, bool big_endian> | |
853 | typename elfcpp::Elf_types<size>::Elf_Addr | |
854 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::symbol_value() const | |
855 | { | |
856 | if (this->local_sym_index_ == GSYM_CODE) | |
857 | { | |
858 | const Sized_symbol<size>* sym; | |
859 | sym = static_cast<const Sized_symbol<size>*>(this->u1_.gsym); | |
860 | return sym->value(); | |
861 | } | |
862 | gold_assert(this->local_sym_index_ != SECTION_CODE | |
863 | && this->local_sym_index_ != INVALID_CODE); | |
864 | const Sized_relobj<size, big_endian>* relobj = this->u1_.relobj; | |
865 | return relobj->local_symbol_value(this->local_sym_index_); | |
866 | } | |
867 | ||
c06b7b0b ILT |
868 | // Write out a Rela relocation. |
869 | ||
870 | template<bool dynamic, int size, bool big_endian> | |
871 | void | |
872 | Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>::write( | |
873 | unsigned char* pov) const | |
874 | { | |
875 | elfcpp::Rela_write<size, big_endian> orel(pov); | |
876 | this->rel_.write_rel(&orel); | |
e8c846c3 | 877 | Addend addend = this->addend_; |
dceae3c1 ILT |
878 | if (this->rel_.is_relative()) |
879 | addend += this->rel_.symbol_value(); | |
880 | if (this->rel_.is_local_section_symbol()) | |
881 | addend += this->rel_.local_section_offset(); | |
e8c846c3 | 882 | orel.put_r_addend(addend); |
c06b7b0b ILT |
883 | } |
884 | ||
885 | // Output_data_reloc_base methods. | |
886 | ||
16649710 ILT |
887 | // Adjust the output section. |
888 | ||
889 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
890 | void | |
891 | Output_data_reloc_base<sh_type, dynamic, size, big_endian> | |
892 | ::do_adjust_output_section(Output_section* os) | |
893 | { | |
894 | if (sh_type == elfcpp::SHT_REL) | |
895 | os->set_entsize(elfcpp::Elf_sizes<size>::rel_size); | |
896 | else if (sh_type == elfcpp::SHT_RELA) | |
897 | os->set_entsize(elfcpp::Elf_sizes<size>::rela_size); | |
898 | else | |
899 | gold_unreachable(); | |
900 | if (dynamic) | |
901 | os->set_should_link_to_dynsym(); | |
902 | else | |
903 | os->set_should_link_to_symtab(); | |
904 | } | |
905 | ||
c06b7b0b ILT |
906 | // Write out relocation data. |
907 | ||
908 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
909 | void | |
910 | Output_data_reloc_base<sh_type, dynamic, size, big_endian>::do_write( | |
911 | Output_file* of) | |
912 | { | |
913 | const off_t off = this->offset(); | |
914 | const off_t oview_size = this->data_size(); | |
915 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
916 | ||
917 | unsigned char* pov = oview; | |
918 | for (typename Relocs::const_iterator p = this->relocs_.begin(); | |
919 | p != this->relocs_.end(); | |
920 | ++p) | |
921 | { | |
922 | p->write(pov); | |
923 | pov += reloc_size; | |
924 | } | |
925 | ||
a3ad94ed | 926 | gold_assert(pov - oview == oview_size); |
c06b7b0b ILT |
927 | |
928 | of->write_output_view(off, oview_size, oview); | |
929 | ||
930 | // We no longer need the relocation entries. | |
931 | this->relocs_.clear(); | |
932 | } | |
933 | ||
6a74a719 ILT |
934 | // Class Output_relocatable_relocs. |
935 | ||
936 | template<int sh_type, int size, bool big_endian> | |
937 | void | |
938 | Output_relocatable_relocs<sh_type, size, big_endian>::set_final_data_size() | |
939 | { | |
940 | this->set_data_size(this->rr_->output_reloc_count() | |
941 | * Reloc_types<sh_type, size, big_endian>::reloc_size); | |
942 | } | |
943 | ||
944 | // class Output_data_group. | |
945 | ||
946 | template<int size, bool big_endian> | |
947 | Output_data_group<size, big_endian>::Output_data_group( | |
948 | Sized_relobj<size, big_endian>* relobj, | |
949 | section_size_type entry_count, | |
950 | const elfcpp::Elf_Word* contents) | |
951 | : Output_section_data(entry_count * 4, 4), | |
952 | relobj_(relobj) | |
953 | { | |
954 | this->flags_ = elfcpp::Swap<32, big_endian>::readval(contents); | |
955 | for (section_size_type i = 1; i < entry_count; ++i) | |
956 | { | |
957 | unsigned int shndx = elfcpp::Swap<32, big_endian>::readval(contents + i); | |
958 | this->input_sections_.push_back(shndx); | |
959 | } | |
960 | } | |
961 | ||
962 | // Write out the section group, which means translating the section | |
963 | // indexes to apply to the output file. | |
964 | ||
965 | template<int size, bool big_endian> | |
966 | void | |
967 | Output_data_group<size, big_endian>::do_write(Output_file* of) | |
968 | { | |
969 | const off_t off = this->offset(); | |
970 | const section_size_type oview_size = | |
971 | convert_to_section_size_type(this->data_size()); | |
972 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
973 | ||
974 | elfcpp::Elf_Word* contents = reinterpret_cast<elfcpp::Elf_Word*>(oview); | |
975 | elfcpp::Swap<32, big_endian>::writeval(contents, this->flags_); | |
976 | ++contents; | |
977 | ||
978 | for (std::vector<unsigned int>::const_iterator p = | |
979 | this->input_sections_.begin(); | |
980 | p != this->input_sections_.end(); | |
981 | ++p, ++contents) | |
982 | { | |
983 | section_offset_type dummy; | |
984 | Output_section* os = this->relobj_->output_section(*p, &dummy); | |
985 | ||
986 | unsigned int output_shndx; | |
987 | if (os != NULL) | |
988 | output_shndx = os->out_shndx(); | |
989 | else | |
990 | { | |
991 | this->relobj_->error(_("section group retained but " | |
992 | "group element discarded")); | |
993 | output_shndx = 0; | |
994 | } | |
995 | ||
996 | elfcpp::Swap<32, big_endian>::writeval(contents, output_shndx); | |
997 | } | |
998 | ||
999 | size_t wrote = reinterpret_cast<unsigned char*>(contents) - oview; | |
1000 | gold_assert(wrote == oview_size); | |
1001 | ||
1002 | of->write_output_view(off, oview_size, oview); | |
1003 | ||
1004 | // We no longer need this information. | |
1005 | this->input_sections_.clear(); | |
1006 | } | |
1007 | ||
dbe717ef | 1008 | // Output_data_got::Got_entry methods. |
ead1e424 ILT |
1009 | |
1010 | // Write out the entry. | |
1011 | ||
1012 | template<int size, bool big_endian> | |
1013 | void | |
7e1edb90 | 1014 | Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const |
ead1e424 ILT |
1015 | { |
1016 | Valtype val = 0; | |
1017 | ||
1018 | switch (this->local_sym_index_) | |
1019 | { | |
1020 | case GSYM_CODE: | |
1021 | { | |
e8c846c3 ILT |
1022 | // If the symbol is resolved locally, we need to write out the |
1023 | // link-time value, which will be relocated dynamically by a | |
1024 | // RELATIVE relocation. | |
ead1e424 | 1025 | Symbol* gsym = this->u_.gsym; |
e8c846c3 ILT |
1026 | Sized_symbol<size>* sgsym; |
1027 | // This cast is a bit ugly. We don't want to put a | |
1028 | // virtual method in Symbol, because we want Symbol to be | |
1029 | // as small as possible. | |
1030 | sgsym = static_cast<Sized_symbol<size>*>(gsym); | |
1031 | val = sgsym->value(); | |
ead1e424 ILT |
1032 | } |
1033 | break; | |
1034 | ||
1035 | case CONSTANT_CODE: | |
1036 | val = this->u_.constant; | |
1037 | break; | |
1038 | ||
1039 | default: | |
e727fa71 ILT |
1040 | val = this->u_.object->local_symbol_value(this->local_sym_index_); |
1041 | break; | |
ead1e424 ILT |
1042 | } |
1043 | ||
a3ad94ed | 1044 | elfcpp::Swap<size, big_endian>::writeval(pov, val); |
ead1e424 ILT |
1045 | } |
1046 | ||
dbe717ef | 1047 | // Output_data_got methods. |
ead1e424 | 1048 | |
dbe717ef ILT |
1049 | // Add an entry for a global symbol to the GOT. This returns true if |
1050 | // this is a new GOT entry, false if the symbol already had a GOT | |
1051 | // entry. | |
1052 | ||
1053 | template<int size, bool big_endian> | |
1054 | bool | |
1055 | Output_data_got<size, big_endian>::add_global(Symbol* gsym) | |
ead1e424 | 1056 | { |
dbe717ef ILT |
1057 | if (gsym->has_got_offset()) |
1058 | return false; | |
ead1e424 | 1059 | |
dbe717ef ILT |
1060 | this->entries_.push_back(Got_entry(gsym)); |
1061 | this->set_got_size(); | |
1062 | gsym->set_got_offset(this->last_got_offset()); | |
1063 | return true; | |
1064 | } | |
ead1e424 | 1065 | |
7bf1f802 ILT |
1066 | // Add an entry for a global symbol to the GOT, and add a dynamic |
1067 | // relocation of type R_TYPE for the GOT entry. | |
1068 | template<int size, bool big_endian> | |
1069 | void | |
1070 | Output_data_got<size, big_endian>::add_global_with_rel( | |
1071 | Symbol* gsym, | |
1072 | Rel_dyn* rel_dyn, | |
1073 | unsigned int r_type) | |
1074 | { | |
1075 | if (gsym->has_got_offset()) | |
1076 | return; | |
1077 | ||
1078 | this->entries_.push_back(Got_entry()); | |
1079 | this->set_got_size(); | |
1080 | unsigned int got_offset = this->last_got_offset(); | |
1081 | gsym->set_got_offset(got_offset); | |
1082 | rel_dyn->add_global(gsym, r_type, this, got_offset); | |
1083 | } | |
1084 | ||
1085 | template<int size, bool big_endian> | |
1086 | void | |
1087 | Output_data_got<size, big_endian>::add_global_with_rela( | |
1088 | Symbol* gsym, | |
1089 | Rela_dyn* rela_dyn, | |
1090 | unsigned int r_type) | |
1091 | { | |
1092 | if (gsym->has_got_offset()) | |
1093 | return; | |
1094 | ||
1095 | this->entries_.push_back(Got_entry()); | |
1096 | this->set_got_size(); | |
1097 | unsigned int got_offset = this->last_got_offset(); | |
1098 | gsym->set_got_offset(got_offset); | |
1099 | rela_dyn->add_global(gsym, r_type, this, got_offset, 0); | |
1100 | } | |
1101 | ||
e727fa71 ILT |
1102 | // Add an entry for a local symbol to the GOT. This returns true if |
1103 | // this is a new GOT entry, false if the symbol already has a GOT | |
1104 | // entry. | |
1105 | ||
1106 | template<int size, bool big_endian> | |
1107 | bool | |
1108 | Output_data_got<size, big_endian>::add_local( | |
1109 | Sized_relobj<size, big_endian>* object, | |
1110 | unsigned int symndx) | |
1111 | { | |
1112 | if (object->local_has_got_offset(symndx)) | |
1113 | return false; | |
07f397ab | 1114 | |
e727fa71 ILT |
1115 | this->entries_.push_back(Got_entry(object, symndx)); |
1116 | this->set_got_size(); | |
1117 | object->set_local_got_offset(symndx, this->last_got_offset()); | |
1118 | return true; | |
1119 | } | |
1120 | ||
7bf1f802 ILT |
1121 | // Add an entry for a local symbol to the GOT, and add a dynamic |
1122 | // relocation of type R_TYPE for the GOT entry. | |
1123 | template<int size, bool big_endian> | |
1124 | void | |
1125 | Output_data_got<size, big_endian>::add_local_with_rel( | |
1126 | Sized_relobj<size, big_endian>* object, | |
1127 | unsigned int symndx, | |
1128 | Rel_dyn* rel_dyn, | |
1129 | unsigned int r_type) | |
1130 | { | |
1131 | if (object->local_has_got_offset(symndx)) | |
1132 | return; | |
1133 | ||
1134 | this->entries_.push_back(Got_entry()); | |
1135 | this->set_got_size(); | |
1136 | unsigned int got_offset = this->last_got_offset(); | |
1137 | object->set_local_got_offset(symndx, got_offset); | |
1138 | rel_dyn->add_local(object, symndx, r_type, this, got_offset); | |
1139 | } | |
1140 | ||
1141 | template<int size, bool big_endian> | |
1142 | void | |
1143 | Output_data_got<size, big_endian>::add_local_with_rela( | |
1144 | Sized_relobj<size, big_endian>* object, | |
1145 | unsigned int symndx, | |
1146 | Rela_dyn* rela_dyn, | |
1147 | unsigned int r_type) | |
1148 | { | |
1149 | if (object->local_has_got_offset(symndx)) | |
1150 | return; | |
1151 | ||
1152 | this->entries_.push_back(Got_entry()); | |
1153 | this->set_got_size(); | |
1154 | unsigned int got_offset = this->last_got_offset(); | |
1155 | object->set_local_got_offset(symndx, got_offset); | |
1156 | rela_dyn->add_local(object, symndx, r_type, this, got_offset, 0); | |
1157 | } | |
1158 | ||
07f397ab ILT |
1159 | // Add an entry (or a pair of entries) for a global TLS symbol to the GOT. |
1160 | // In a pair of entries, the first value in the pair will be used for the | |
1161 | // module index, and the second value will be used for the dtv-relative | |
1162 | // offset. This returns true if this is a new GOT entry, false if the symbol | |
1163 | // already has a GOT entry. | |
1164 | ||
1165 | template<int size, bool big_endian> | |
1166 | bool | |
7bf1f802 | 1167 | Output_data_got<size, big_endian>::add_global_tls(Symbol* gsym, bool need_pair) |
07f397ab ILT |
1168 | { |
1169 | if (gsym->has_tls_got_offset(need_pair)) | |
1170 | return false; | |
1171 | ||
1172 | this->entries_.push_back(Got_entry(gsym)); | |
1173 | gsym->set_tls_got_offset(this->last_got_offset(), need_pair); | |
1174 | if (need_pair) | |
1175 | this->entries_.push_back(Got_entry(gsym)); | |
1176 | this->set_got_size(); | |
1177 | return true; | |
1178 | } | |
1179 | ||
7bf1f802 ILT |
1180 | // Add an entry for a global TLS symbol to the GOT, and add a dynamic |
1181 | // relocation of type R_TYPE. | |
1182 | template<int size, bool big_endian> | |
1183 | void | |
1184 | Output_data_got<size, big_endian>::add_global_tls_with_rel( | |
1185 | Symbol* gsym, | |
1186 | Rel_dyn* rel_dyn, | |
1187 | unsigned int r_type) | |
1188 | { | |
1189 | if (gsym->has_tls_got_offset(false)) | |
1190 | return; | |
1191 | ||
1192 | this->entries_.push_back(Got_entry()); | |
1193 | this->set_got_size(); | |
1194 | unsigned int got_offset = this->last_got_offset(); | |
1195 | gsym->set_tls_got_offset(got_offset, false); | |
1196 | rel_dyn->add_global(gsym, r_type, this, got_offset); | |
1197 | } | |
1198 | ||
1199 | template<int size, bool big_endian> | |
1200 | void | |
1201 | Output_data_got<size, big_endian>::add_global_tls_with_rela( | |
1202 | Symbol* gsym, | |
1203 | Rela_dyn* rela_dyn, | |
1204 | unsigned int r_type) | |
1205 | { | |
1206 | if (gsym->has_tls_got_offset(false)) | |
1207 | return; | |
1208 | ||
1209 | this->entries_.push_back(Got_entry()); | |
1210 | this->set_got_size(); | |
1211 | unsigned int got_offset = this->last_got_offset(); | |
1212 | gsym->set_tls_got_offset(got_offset, false); | |
1213 | rela_dyn->add_global(gsym, r_type, this, got_offset, 0); | |
1214 | } | |
1215 | ||
1216 | // Add a pair of entries for a global TLS symbol to the GOT, and add | |
1217 | // dynamic relocations of type MOD_R_TYPE and DTV_R_TYPE, respectively. | |
1218 | template<int size, bool big_endian> | |
1219 | void | |
1220 | Output_data_got<size, big_endian>::add_global_tls_with_rel( | |
1221 | Symbol* gsym, | |
1222 | Rel_dyn* rel_dyn, | |
1223 | unsigned int mod_r_type, | |
1224 | unsigned int dtv_r_type) | |
1225 | { | |
1226 | if (gsym->has_tls_got_offset(true)) | |
1227 | return; | |
1228 | ||
1229 | this->entries_.push_back(Got_entry()); | |
1230 | unsigned int got_offset = this->last_got_offset(); | |
1231 | gsym->set_tls_got_offset(got_offset, true); | |
1232 | rel_dyn->add_global(gsym, mod_r_type, this, got_offset); | |
1233 | ||
1234 | this->entries_.push_back(Got_entry()); | |
1235 | this->set_got_size(); | |
1236 | got_offset = this->last_got_offset(); | |
1237 | rel_dyn->add_global(gsym, dtv_r_type, this, got_offset); | |
1238 | } | |
1239 | ||
1240 | template<int size, bool big_endian> | |
1241 | void | |
1242 | Output_data_got<size, big_endian>::add_global_tls_with_rela( | |
1243 | Symbol* gsym, | |
1244 | Rela_dyn* rela_dyn, | |
1245 | unsigned int mod_r_type, | |
1246 | unsigned int dtv_r_type) | |
1247 | { | |
1248 | if (gsym->has_tls_got_offset(true)) | |
1249 | return; | |
1250 | ||
1251 | this->entries_.push_back(Got_entry()); | |
1252 | unsigned int got_offset = this->last_got_offset(); | |
1253 | gsym->set_tls_got_offset(got_offset, true); | |
1254 | rela_dyn->add_global(gsym, mod_r_type, this, got_offset, 0); | |
1255 | ||
1256 | this->entries_.push_back(Got_entry()); | |
1257 | this->set_got_size(); | |
1258 | got_offset = this->last_got_offset(); | |
1259 | rela_dyn->add_global(gsym, dtv_r_type, this, got_offset, 0); | |
1260 | } | |
1261 | ||
07f397ab ILT |
1262 | // Add an entry (or a pair of entries) for a local TLS symbol to the GOT. |
1263 | // In a pair of entries, the first value in the pair will be used for the | |
1264 | // module index, and the second value will be used for the dtv-relative | |
1265 | // offset. This returns true if this is a new GOT entry, false if the symbol | |
1266 | // already has a GOT entry. | |
1267 | ||
1268 | template<int size, bool big_endian> | |
1269 | bool | |
1270 | Output_data_got<size, big_endian>::add_local_tls( | |
1271 | Sized_relobj<size, big_endian>* object, | |
1272 | unsigned int symndx, | |
1273 | bool need_pair) | |
1274 | { | |
1275 | if (object->local_has_tls_got_offset(symndx, need_pair)) | |
1276 | return false; | |
1277 | ||
1278 | this->entries_.push_back(Got_entry(object, symndx)); | |
1279 | object->set_local_tls_got_offset(symndx, this->last_got_offset(), need_pair); | |
1280 | if (need_pair) | |
1281 | this->entries_.push_back(Got_entry(object, symndx)); | |
1282 | this->set_got_size(); | |
1283 | return true; | |
1284 | } | |
1285 | ||
7bf1f802 ILT |
1286 | // Add an entry (or pair of entries) for a local TLS symbol to the GOT, |
1287 | // and add a dynamic relocation of type R_TYPE for the first GOT entry. | |
1288 | // Because this is a local symbol, the first GOT entry can be relocated | |
1289 | // relative to a section symbol, and the second GOT entry will have an | |
1290 | // dtv-relative value that can be computed at link time. | |
1291 | template<int size, bool big_endian> | |
1292 | void | |
1293 | Output_data_got<size, big_endian>::add_local_tls_with_rel( | |
1294 | Sized_relobj<size, big_endian>* object, | |
1295 | unsigned int symndx, | |
1296 | unsigned int shndx, | |
1297 | bool need_pair, | |
1298 | Rel_dyn* rel_dyn, | |
1299 | unsigned int r_type) | |
1300 | { | |
1301 | if (object->local_has_tls_got_offset(symndx, need_pair)) | |
1302 | return; | |
1303 | ||
1304 | this->entries_.push_back(Got_entry()); | |
1305 | unsigned int got_offset = this->last_got_offset(); | |
1306 | object->set_local_tls_got_offset(symndx, got_offset, need_pair); | |
8383303e | 1307 | section_offset_type off; |
7bf1f802 ILT |
1308 | Output_section* os = object->output_section(shndx, &off); |
1309 | rel_dyn->add_output_section(os, r_type, this, got_offset); | |
1310 | ||
1311 | // The second entry of the pair will be statically initialized | |
1312 | // with the TLS offset of the symbol. | |
1313 | if (need_pair) | |
1314 | this->entries_.push_back(Got_entry(object, symndx)); | |
1315 | ||
1316 | this->set_got_size(); | |
1317 | } | |
1318 | ||
1319 | template<int size, bool big_endian> | |
1320 | void | |
1321 | Output_data_got<size, big_endian>::add_local_tls_with_rela( | |
1322 | Sized_relobj<size, big_endian>* object, | |
1323 | unsigned int symndx, | |
1324 | unsigned int shndx, | |
1325 | bool need_pair, | |
1326 | Rela_dyn* rela_dyn, | |
1327 | unsigned int r_type) | |
1328 | { | |
1329 | if (object->local_has_tls_got_offset(symndx, need_pair)) | |
1330 | return; | |
1331 | ||
1332 | this->entries_.push_back(Got_entry()); | |
1333 | unsigned int got_offset = this->last_got_offset(); | |
1334 | object->set_local_tls_got_offset(symndx, got_offset, need_pair); | |
8383303e | 1335 | section_offset_type off; |
7bf1f802 ILT |
1336 | Output_section* os = object->output_section(shndx, &off); |
1337 | rela_dyn->add_output_section(os, r_type, this, got_offset, 0); | |
1338 | ||
1339 | // The second entry of the pair will be statically initialized | |
1340 | // with the TLS offset of the symbol. | |
1341 | if (need_pair) | |
1342 | this->entries_.push_back(Got_entry(object, symndx)); | |
1343 | ||
1344 | this->set_got_size(); | |
1345 | } | |
1346 | ||
ead1e424 ILT |
1347 | // Write out the GOT. |
1348 | ||
1349 | template<int size, bool big_endian> | |
1350 | void | |
dbe717ef | 1351 | Output_data_got<size, big_endian>::do_write(Output_file* of) |
ead1e424 ILT |
1352 | { |
1353 | const int add = size / 8; | |
1354 | ||
1355 | const off_t off = this->offset(); | |
c06b7b0b | 1356 | const off_t oview_size = this->data_size(); |
ead1e424 ILT |
1357 | unsigned char* const oview = of->get_output_view(off, oview_size); |
1358 | ||
1359 | unsigned char* pov = oview; | |
1360 | for (typename Got_entries::const_iterator p = this->entries_.begin(); | |
1361 | p != this->entries_.end(); | |
1362 | ++p) | |
1363 | { | |
7e1edb90 | 1364 | p->write(pov); |
ead1e424 ILT |
1365 | pov += add; |
1366 | } | |
1367 | ||
a3ad94ed | 1368 | gold_assert(pov - oview == oview_size); |
c06b7b0b | 1369 | |
ead1e424 ILT |
1370 | of->write_output_view(off, oview_size, oview); |
1371 | ||
1372 | // We no longer need the GOT entries. | |
1373 | this->entries_.clear(); | |
1374 | } | |
1375 | ||
a3ad94ed ILT |
1376 | // Output_data_dynamic::Dynamic_entry methods. |
1377 | ||
1378 | // Write out the entry. | |
1379 | ||
1380 | template<int size, bool big_endian> | |
1381 | void | |
1382 | Output_data_dynamic::Dynamic_entry::write( | |
1383 | unsigned char* pov, | |
7d1a9ebb | 1384 | const Stringpool* pool) const |
a3ad94ed ILT |
1385 | { |
1386 | typename elfcpp::Elf_types<size>::Elf_WXword val; | |
1387 | switch (this->classification_) | |
1388 | { | |
1389 | case DYNAMIC_NUMBER: | |
1390 | val = this->u_.val; | |
1391 | break; | |
1392 | ||
1393 | case DYNAMIC_SECTION_ADDRESS: | |
16649710 | 1394 | val = this->u_.od->address(); |
a3ad94ed ILT |
1395 | break; |
1396 | ||
1397 | case DYNAMIC_SECTION_SIZE: | |
16649710 | 1398 | val = this->u_.od->data_size(); |
a3ad94ed ILT |
1399 | break; |
1400 | ||
1401 | case DYNAMIC_SYMBOL: | |
1402 | { | |
16649710 ILT |
1403 | const Sized_symbol<size>* s = |
1404 | static_cast<const Sized_symbol<size>*>(this->u_.sym); | |
a3ad94ed ILT |
1405 | val = s->value(); |
1406 | } | |
1407 | break; | |
1408 | ||
1409 | case DYNAMIC_STRING: | |
1410 | val = pool->get_offset(this->u_.str); | |
1411 | break; | |
1412 | ||
1413 | default: | |
1414 | gold_unreachable(); | |
1415 | } | |
1416 | ||
1417 | elfcpp::Dyn_write<size, big_endian> dw(pov); | |
1418 | dw.put_d_tag(this->tag_); | |
1419 | dw.put_d_val(val); | |
1420 | } | |
1421 | ||
1422 | // Output_data_dynamic methods. | |
1423 | ||
16649710 ILT |
1424 | // Adjust the output section to set the entry size. |
1425 | ||
1426 | void | |
1427 | Output_data_dynamic::do_adjust_output_section(Output_section* os) | |
1428 | { | |
8851ecca | 1429 | if (parameters->target().get_size() == 32) |
16649710 | 1430 | os->set_entsize(elfcpp::Elf_sizes<32>::dyn_size); |
8851ecca | 1431 | else if (parameters->target().get_size() == 64) |
16649710 ILT |
1432 | os->set_entsize(elfcpp::Elf_sizes<64>::dyn_size); |
1433 | else | |
1434 | gold_unreachable(); | |
1435 | } | |
1436 | ||
a3ad94ed ILT |
1437 | // Set the final data size. |
1438 | ||
1439 | void | |
27bc2bce | 1440 | Output_data_dynamic::set_final_data_size() |
a3ad94ed ILT |
1441 | { |
1442 | // Add the terminating entry. | |
1443 | this->add_constant(elfcpp::DT_NULL, 0); | |
1444 | ||
1445 | int dyn_size; | |
8851ecca | 1446 | if (parameters->target().get_size() == 32) |
a3ad94ed | 1447 | dyn_size = elfcpp::Elf_sizes<32>::dyn_size; |
8851ecca | 1448 | else if (parameters->target().get_size() == 64) |
a3ad94ed ILT |
1449 | dyn_size = elfcpp::Elf_sizes<64>::dyn_size; |
1450 | else | |
1451 | gold_unreachable(); | |
1452 | this->set_data_size(this->entries_.size() * dyn_size); | |
1453 | } | |
1454 | ||
1455 | // Write out the dynamic entries. | |
1456 | ||
1457 | void | |
1458 | Output_data_dynamic::do_write(Output_file* of) | |
1459 | { | |
8851ecca | 1460 | switch (parameters->size_and_endianness()) |
a3ad94ed | 1461 | { |
9025d29d | 1462 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
1463 | case Parameters::TARGET_32_LITTLE: |
1464 | this->sized_write<32, false>(of); | |
1465 | break; | |
9025d29d | 1466 | #endif |
8851ecca ILT |
1467 | #ifdef HAVE_TARGET_32_BIG |
1468 | case Parameters::TARGET_32_BIG: | |
1469 | this->sized_write<32, true>(of); | |
1470 | break; | |
9025d29d | 1471 | #endif |
9025d29d | 1472 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
1473 | case Parameters::TARGET_64_LITTLE: |
1474 | this->sized_write<64, false>(of); | |
1475 | break; | |
9025d29d | 1476 | #endif |
8851ecca ILT |
1477 | #ifdef HAVE_TARGET_64_BIG |
1478 | case Parameters::TARGET_64_BIG: | |
1479 | this->sized_write<64, true>(of); | |
1480 | break; | |
1481 | #endif | |
1482 | default: | |
1483 | gold_unreachable(); | |
a3ad94ed | 1484 | } |
a3ad94ed ILT |
1485 | } |
1486 | ||
1487 | template<int size, bool big_endian> | |
1488 | void | |
1489 | Output_data_dynamic::sized_write(Output_file* of) | |
1490 | { | |
1491 | const int dyn_size = elfcpp::Elf_sizes<size>::dyn_size; | |
1492 | ||
1493 | const off_t offset = this->offset(); | |
1494 | const off_t oview_size = this->data_size(); | |
1495 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1496 | ||
1497 | unsigned char* pov = oview; | |
1498 | for (typename Dynamic_entries::const_iterator p = this->entries_.begin(); | |
1499 | p != this->entries_.end(); | |
1500 | ++p) | |
1501 | { | |
7d1a9ebb | 1502 | p->write<size, big_endian>(pov, this->pool_); |
a3ad94ed ILT |
1503 | pov += dyn_size; |
1504 | } | |
1505 | ||
1506 | gold_assert(pov - oview == oview_size); | |
1507 | ||
1508 | of->write_output_view(offset, oview_size, oview); | |
1509 | ||
1510 | // We no longer need the dynamic entries. | |
1511 | this->entries_.clear(); | |
1512 | } | |
1513 | ||
ead1e424 ILT |
1514 | // Output_section::Input_section methods. |
1515 | ||
1516 | // Return the data size. For an input section we store the size here. | |
1517 | // For an Output_section_data, we have to ask it for the size. | |
1518 | ||
1519 | off_t | |
1520 | Output_section::Input_section::data_size() const | |
1521 | { | |
1522 | if (this->is_input_section()) | |
b8e6aad9 | 1523 | return this->u1_.data_size; |
ead1e424 | 1524 | else |
b8e6aad9 | 1525 | return this->u2_.posd->data_size(); |
ead1e424 ILT |
1526 | } |
1527 | ||
1528 | // Set the address and file offset. | |
1529 | ||
1530 | void | |
96803768 ILT |
1531 | Output_section::Input_section::set_address_and_file_offset( |
1532 | uint64_t address, | |
1533 | off_t file_offset, | |
1534 | off_t section_file_offset) | |
ead1e424 ILT |
1535 | { |
1536 | if (this->is_input_section()) | |
96803768 ILT |
1537 | this->u2_.object->set_section_offset(this->shndx_, |
1538 | file_offset - section_file_offset); | |
ead1e424 | 1539 | else |
96803768 ILT |
1540 | this->u2_.posd->set_address_and_file_offset(address, file_offset); |
1541 | } | |
1542 | ||
a445fddf ILT |
1543 | // Reset the address and file offset. |
1544 | ||
1545 | void | |
1546 | Output_section::Input_section::reset_address_and_file_offset() | |
1547 | { | |
1548 | if (!this->is_input_section()) | |
1549 | this->u2_.posd->reset_address_and_file_offset(); | |
1550 | } | |
1551 | ||
96803768 ILT |
1552 | // Finalize the data size. |
1553 | ||
1554 | void | |
1555 | Output_section::Input_section::finalize_data_size() | |
1556 | { | |
1557 | if (!this->is_input_section()) | |
1558 | this->u2_.posd->finalize_data_size(); | |
b8e6aad9 ILT |
1559 | } |
1560 | ||
1e983657 ILT |
1561 | // Try to turn an input offset into an output offset. We want to |
1562 | // return the output offset relative to the start of this | |
1563 | // Input_section in the output section. | |
b8e6aad9 | 1564 | |
8f00aeb8 | 1565 | inline bool |
8383303e ILT |
1566 | Output_section::Input_section::output_offset( |
1567 | const Relobj* object, | |
1568 | unsigned int shndx, | |
1569 | section_offset_type offset, | |
1570 | section_offset_type *poutput) const | |
b8e6aad9 ILT |
1571 | { |
1572 | if (!this->is_input_section()) | |
730cdc88 | 1573 | return this->u2_.posd->output_offset(object, shndx, offset, poutput); |
b8e6aad9 ILT |
1574 | else |
1575 | { | |
730cdc88 | 1576 | if (this->shndx_ != shndx || this->u2_.object != object) |
b8e6aad9 | 1577 | return false; |
1e983657 | 1578 | *poutput = offset; |
b8e6aad9 ILT |
1579 | return true; |
1580 | } | |
ead1e424 ILT |
1581 | } |
1582 | ||
a9a60db6 ILT |
1583 | // Return whether this is the merge section for the input section |
1584 | // SHNDX in OBJECT. | |
1585 | ||
1586 | inline bool | |
1587 | Output_section::Input_section::is_merge_section_for(const Relobj* object, | |
1588 | unsigned int shndx) const | |
1589 | { | |
1590 | if (this->is_input_section()) | |
1591 | return false; | |
1592 | return this->u2_.posd->is_merge_section_for(object, shndx); | |
1593 | } | |
1594 | ||
ead1e424 ILT |
1595 | // Write out the data. We don't have to do anything for an input |
1596 | // section--they are handled via Object::relocate--but this is where | |
1597 | // we write out the data for an Output_section_data. | |
1598 | ||
1599 | void | |
1600 | Output_section::Input_section::write(Output_file* of) | |
1601 | { | |
1602 | if (!this->is_input_section()) | |
b8e6aad9 | 1603 | this->u2_.posd->write(of); |
ead1e424 ILT |
1604 | } |
1605 | ||
96803768 ILT |
1606 | // Write the data to a buffer. As for write(), we don't have to do |
1607 | // anything for an input section. | |
1608 | ||
1609 | void | |
1610 | Output_section::Input_section::write_to_buffer(unsigned char* buffer) | |
1611 | { | |
1612 | if (!this->is_input_section()) | |
1613 | this->u2_.posd->write_to_buffer(buffer); | |
1614 | } | |
1615 | ||
a2fb1b05 ILT |
1616 | // Output_section methods. |
1617 | ||
1618 | // Construct an Output_section. NAME will point into a Stringpool. | |
1619 | ||
96803768 | 1620 | Output_section::Output_section(const char* name, elfcpp::Elf_Word type, |
b8e6aad9 | 1621 | elfcpp::Elf_Xword flags) |
96803768 | 1622 | : name_(name), |
a2fb1b05 ILT |
1623 | addralign_(0), |
1624 | entsize_(0), | |
a445fddf | 1625 | load_address_(0), |
16649710 | 1626 | link_section_(NULL), |
a2fb1b05 | 1627 | link_(0), |
16649710 | 1628 | info_section_(NULL), |
6a74a719 | 1629 | info_symndx_(NULL), |
a2fb1b05 ILT |
1630 | info_(0), |
1631 | type_(type), | |
61ba1cf9 | 1632 | flags_(flags), |
91ea499d | 1633 | out_shndx_(-1U), |
c06b7b0b ILT |
1634 | symtab_index_(0), |
1635 | dynsym_index_(0), | |
ead1e424 ILT |
1636 | input_sections_(), |
1637 | first_input_offset_(0), | |
c51e6221 | 1638 | fills_(), |
96803768 | 1639 | postprocessing_buffer_(NULL), |
a3ad94ed | 1640 | needs_symtab_index_(false), |
16649710 ILT |
1641 | needs_dynsym_index_(false), |
1642 | should_link_to_symtab_(false), | |
730cdc88 | 1643 | should_link_to_dynsym_(false), |
27bc2bce | 1644 | after_input_sections_(false), |
7bf1f802 | 1645 | requires_postprocessing_(false), |
a445fddf ILT |
1646 | found_in_sections_clause_(false), |
1647 | has_load_address_(false), | |
755ab8af | 1648 | info_uses_section_index_(false), |
7bf1f802 | 1649 | tls_offset_(0) |
a2fb1b05 | 1650 | { |
27bc2bce ILT |
1651 | // An unallocated section has no address. Forcing this means that |
1652 | // we don't need special treatment for symbols defined in debug | |
1653 | // sections. | |
1654 | if ((flags & elfcpp::SHF_ALLOC) == 0) | |
1655 | this->set_address(0); | |
a2fb1b05 ILT |
1656 | } |
1657 | ||
54dc6425 ILT |
1658 | Output_section::~Output_section() |
1659 | { | |
1660 | } | |
1661 | ||
16649710 ILT |
1662 | // Set the entry size. |
1663 | ||
1664 | void | |
1665 | Output_section::set_entsize(uint64_t v) | |
1666 | { | |
1667 | if (this->entsize_ == 0) | |
1668 | this->entsize_ = v; | |
1669 | else | |
1670 | gold_assert(this->entsize_ == v); | |
1671 | } | |
1672 | ||
ead1e424 | 1673 | // Add the input section SHNDX, with header SHDR, named SECNAME, in |
730cdc88 ILT |
1674 | // OBJECT, to the Output_section. RELOC_SHNDX is the index of a |
1675 | // relocation section which applies to this section, or 0 if none, or | |
1676 | // -1U if more than one. Return the offset of the input section | |
1677 | // within the output section. Return -1 if the input section will | |
1678 | // receive special handling. In the normal case we don't always keep | |
1679 | // track of input sections for an Output_section. Instead, each | |
1680 | // Object keeps track of the Output_section for each of its input | |
a445fddf ILT |
1681 | // sections. However, if HAVE_SECTIONS_SCRIPT is true, we do keep |
1682 | // track of input sections here; this is used when SECTIONS appears in | |
1683 | // a linker script. | |
a2fb1b05 ILT |
1684 | |
1685 | template<int size, bool big_endian> | |
1686 | off_t | |
730cdc88 ILT |
1687 | Output_section::add_input_section(Sized_relobj<size, big_endian>* object, |
1688 | unsigned int shndx, | |
ead1e424 | 1689 | const char* secname, |
730cdc88 | 1690 | const elfcpp::Shdr<size, big_endian>& shdr, |
a445fddf ILT |
1691 | unsigned int reloc_shndx, |
1692 | bool have_sections_script) | |
a2fb1b05 ILT |
1693 | { |
1694 | elfcpp::Elf_Xword addralign = shdr.get_sh_addralign(); | |
1695 | if ((addralign & (addralign - 1)) != 0) | |
1696 | { | |
75f2446e ILT |
1697 | object->error(_("invalid alignment %lu for section \"%s\""), |
1698 | static_cast<unsigned long>(addralign), secname); | |
1699 | addralign = 1; | |
a2fb1b05 | 1700 | } |
a2fb1b05 ILT |
1701 | |
1702 | if (addralign > this->addralign_) | |
1703 | this->addralign_ = addralign; | |
1704 | ||
44a43cf9 | 1705 | typename elfcpp::Elf_types<size>::Elf_WXword sh_flags = shdr.get_sh_flags(); |
a445fddf ILT |
1706 | this->flags_ |= (sh_flags |
1707 | & (elfcpp::SHF_WRITE | |
1708 | | elfcpp::SHF_ALLOC | |
1709 | | elfcpp::SHF_EXECINSTR)); | |
1710 | ||
4f833eee | 1711 | uint64_t entsize = shdr.get_sh_entsize(); |
44a43cf9 ILT |
1712 | |
1713 | // .debug_str is a mergeable string section, but is not always so | |
1714 | // marked by compilers. Mark manually here so we can optimize. | |
1715 | if (strcmp(secname, ".debug_str") == 0) | |
4f833eee ILT |
1716 | { |
1717 | sh_flags |= (elfcpp::SHF_MERGE | elfcpp::SHF_STRINGS); | |
1718 | entsize = 1; | |
1719 | } | |
44a43cf9 | 1720 | |
b8e6aad9 | 1721 | // If this is a SHF_MERGE section, we pass all the input sections to |
730cdc88 ILT |
1722 | // a Output_data_merge. We don't try to handle relocations for such |
1723 | // a section. | |
44a43cf9 | 1724 | if ((sh_flags & elfcpp::SHF_MERGE) != 0 |
730cdc88 | 1725 | && reloc_shndx == 0) |
b8e6aad9 | 1726 | { |
44a43cf9 | 1727 | if (this->add_merge_input_section(object, shndx, sh_flags, |
96803768 | 1728 | entsize, addralign)) |
b8e6aad9 ILT |
1729 | { |
1730 | // Tell the relocation routines that they need to call the | |
730cdc88 | 1731 | // output_offset method to determine the final address. |
b8e6aad9 ILT |
1732 | return -1; |
1733 | } | |
1734 | } | |
1735 | ||
27bc2bce | 1736 | off_t offset_in_section = this->current_data_size_for_child(); |
c51e6221 ILT |
1737 | off_t aligned_offset_in_section = align_address(offset_in_section, |
1738 | addralign); | |
1739 | ||
1740 | if (aligned_offset_in_section > offset_in_section | |
a445fddf | 1741 | && !have_sections_script |
44a43cf9 | 1742 | && (sh_flags & elfcpp::SHF_EXECINSTR) != 0 |
c51e6221 ILT |
1743 | && object->target()->has_code_fill()) |
1744 | { | |
1745 | // We need to add some fill data. Using fill_list_ when | |
1746 | // possible is an optimization, since we will often have fill | |
1747 | // sections without input sections. | |
1748 | off_t fill_len = aligned_offset_in_section - offset_in_section; | |
1749 | if (this->input_sections_.empty()) | |
1750 | this->fills_.push_back(Fill(offset_in_section, fill_len)); | |
1751 | else | |
1752 | { | |
1753 | // FIXME: When relaxing, the size needs to adjust to | |
1754 | // maintain a constant alignment. | |
1755 | std::string fill_data(object->target()->code_fill(fill_len)); | |
1756 | Output_data_const* odc = new Output_data_const(fill_data, 1); | |
1757 | this->input_sections_.push_back(Input_section(odc)); | |
1758 | } | |
1759 | } | |
1760 | ||
27bc2bce ILT |
1761 | this->set_current_data_size_for_child(aligned_offset_in_section |
1762 | + shdr.get_sh_size()); | |
a2fb1b05 | 1763 | |
ead1e424 ILT |
1764 | // We need to keep track of this section if we are already keeping |
1765 | // track of sections, or if we are relaxing. FIXME: Add test for | |
1766 | // relaxing. | |
a445fddf | 1767 | if (have_sections_script || !this->input_sections_.empty()) |
ead1e424 ILT |
1768 | this->input_sections_.push_back(Input_section(object, shndx, |
1769 | shdr.get_sh_size(), | |
1770 | addralign)); | |
54dc6425 | 1771 | |
c51e6221 | 1772 | return aligned_offset_in_section; |
61ba1cf9 ILT |
1773 | } |
1774 | ||
ead1e424 ILT |
1775 | // Add arbitrary data to an output section. |
1776 | ||
1777 | void | |
1778 | Output_section::add_output_section_data(Output_section_data* posd) | |
1779 | { | |
b8e6aad9 ILT |
1780 | Input_section inp(posd); |
1781 | this->add_output_section_data(&inp); | |
a445fddf ILT |
1782 | |
1783 | if (posd->is_data_size_valid()) | |
1784 | { | |
1785 | off_t offset_in_section = this->current_data_size_for_child(); | |
1786 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
1787 | posd->addralign()); | |
1788 | this->set_current_data_size_for_child(aligned_offset_in_section | |
1789 | + posd->data_size()); | |
1790 | } | |
b8e6aad9 ILT |
1791 | } |
1792 | ||
1793 | // Add arbitrary data to an output section by Input_section. | |
c06b7b0b | 1794 | |
b8e6aad9 ILT |
1795 | void |
1796 | Output_section::add_output_section_data(Input_section* inp) | |
1797 | { | |
ead1e424 | 1798 | if (this->input_sections_.empty()) |
27bc2bce | 1799 | this->first_input_offset_ = this->current_data_size_for_child(); |
c06b7b0b | 1800 | |
b8e6aad9 | 1801 | this->input_sections_.push_back(*inp); |
c06b7b0b | 1802 | |
b8e6aad9 | 1803 | uint64_t addralign = inp->addralign(); |
ead1e424 ILT |
1804 | if (addralign > this->addralign_) |
1805 | this->addralign_ = addralign; | |
c06b7b0b | 1806 | |
b8e6aad9 ILT |
1807 | inp->set_output_section(this); |
1808 | } | |
1809 | ||
1810 | // Add a merge section to an output section. | |
1811 | ||
1812 | void | |
1813 | Output_section::add_output_merge_section(Output_section_data* posd, | |
1814 | bool is_string, uint64_t entsize) | |
1815 | { | |
1816 | Input_section inp(posd, is_string, entsize); | |
1817 | this->add_output_section_data(&inp); | |
1818 | } | |
1819 | ||
1820 | // Add an input section to a SHF_MERGE section. | |
1821 | ||
1822 | bool | |
1823 | Output_section::add_merge_input_section(Relobj* object, unsigned int shndx, | |
1824 | uint64_t flags, uint64_t entsize, | |
96803768 | 1825 | uint64_t addralign) |
b8e6aad9 | 1826 | { |
87f95776 ILT |
1827 | bool is_string = (flags & elfcpp::SHF_STRINGS) != 0; |
1828 | ||
1829 | // We only merge strings if the alignment is not more than the | |
1830 | // character size. This could be handled, but it's unusual. | |
1831 | if (is_string && addralign > entsize) | |
b8e6aad9 ILT |
1832 | return false; |
1833 | ||
b8e6aad9 ILT |
1834 | Input_section_list::iterator p; |
1835 | for (p = this->input_sections_.begin(); | |
1836 | p != this->input_sections_.end(); | |
1837 | ++p) | |
87f95776 | 1838 | if (p->is_merge_section(is_string, entsize, addralign)) |
9a0910c3 ILT |
1839 | { |
1840 | p->add_input_section(object, shndx); | |
1841 | return true; | |
1842 | } | |
b8e6aad9 ILT |
1843 | |
1844 | // We handle the actual constant merging in Output_merge_data or | |
1845 | // Output_merge_string_data. | |
9a0910c3 ILT |
1846 | Output_section_data* posd; |
1847 | if (!is_string) | |
1848 | posd = new Output_merge_data(entsize, addralign); | |
b8e6aad9 ILT |
1849 | else |
1850 | { | |
9a0910c3 ILT |
1851 | switch (entsize) |
1852 | { | |
1853 | case 1: | |
1854 | posd = new Output_merge_string<char>(addralign); | |
1855 | break; | |
1856 | case 2: | |
1857 | posd = new Output_merge_string<uint16_t>(addralign); | |
1858 | break; | |
1859 | case 4: | |
1860 | posd = new Output_merge_string<uint32_t>(addralign); | |
1861 | break; | |
1862 | default: | |
1863 | return false; | |
1864 | } | |
b8e6aad9 ILT |
1865 | } |
1866 | ||
9a0910c3 ILT |
1867 | this->add_output_merge_section(posd, is_string, entsize); |
1868 | posd->add_input_section(object, shndx); | |
1869 | ||
b8e6aad9 ILT |
1870 | return true; |
1871 | } | |
1872 | ||
730cdc88 ILT |
1873 | // Given an address OFFSET relative to the start of input section |
1874 | // SHNDX in OBJECT, return whether this address is being included in | |
1875 | // the final link. This should only be called if SHNDX in OBJECT has | |
1876 | // a special mapping. | |
1877 | ||
1878 | bool | |
1879 | Output_section::is_input_address_mapped(const Relobj* object, | |
1880 | unsigned int shndx, | |
1881 | off_t offset) const | |
1882 | { | |
1883 | gold_assert(object->is_section_specially_mapped(shndx)); | |
1884 | ||
1885 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1886 | p != this->input_sections_.end(); | |
1887 | ++p) | |
1888 | { | |
8383303e | 1889 | section_offset_type output_offset; |
730cdc88 ILT |
1890 | if (p->output_offset(object, shndx, offset, &output_offset)) |
1891 | return output_offset != -1; | |
1892 | } | |
1893 | ||
1894 | // By default we assume that the address is mapped. This should | |
1895 | // only be called after we have passed all sections to Layout. At | |
1896 | // that point we should know what we are discarding. | |
1897 | return true; | |
1898 | } | |
1899 | ||
1900 | // Given an address OFFSET relative to the start of input section | |
1901 | // SHNDX in object OBJECT, return the output offset relative to the | |
1e983657 ILT |
1902 | // start of the input section in the output section. This should only |
1903 | // be called if SHNDX in OBJECT has a special mapping. | |
730cdc88 | 1904 | |
8383303e | 1905 | section_offset_type |
730cdc88 | 1906 | Output_section::output_offset(const Relobj* object, unsigned int shndx, |
8383303e | 1907 | section_offset_type offset) const |
730cdc88 ILT |
1908 | { |
1909 | gold_assert(object->is_section_specially_mapped(shndx)); | |
1910 | // This can only be called meaningfully when layout is complete. | |
1911 | gold_assert(Output_data::is_layout_complete()); | |
1912 | ||
1913 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1914 | p != this->input_sections_.end(); | |
1915 | ++p) | |
1916 | { | |
8383303e | 1917 | section_offset_type output_offset; |
730cdc88 ILT |
1918 | if (p->output_offset(object, shndx, offset, &output_offset)) |
1919 | return output_offset; | |
1920 | } | |
1921 | gold_unreachable(); | |
1922 | } | |
1923 | ||
b8e6aad9 ILT |
1924 | // Return the output virtual address of OFFSET relative to the start |
1925 | // of input section SHNDX in object OBJECT. | |
1926 | ||
1927 | uint64_t | |
1928 | Output_section::output_address(const Relobj* object, unsigned int shndx, | |
1929 | off_t offset) const | |
1930 | { | |
730cdc88 | 1931 | gold_assert(object->is_section_specially_mapped(shndx)); |
730cdc88 | 1932 | |
b8e6aad9 ILT |
1933 | uint64_t addr = this->address() + this->first_input_offset_; |
1934 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1935 | p != this->input_sections_.end(); | |
1936 | ++p) | |
1937 | { | |
1938 | addr = align_address(addr, p->addralign()); | |
8383303e | 1939 | section_offset_type output_offset; |
730cdc88 ILT |
1940 | if (p->output_offset(object, shndx, offset, &output_offset)) |
1941 | { | |
1942 | if (output_offset == -1) | |
1943 | return -1U; | |
1944 | return addr + output_offset; | |
1945 | } | |
b8e6aad9 ILT |
1946 | addr += p->data_size(); |
1947 | } | |
1948 | ||
1949 | // If we get here, it means that we don't know the mapping for this | |
1950 | // input section. This might happen in principle if | |
1951 | // add_input_section were called before add_output_section_data. | |
1952 | // But it should never actually happen. | |
1953 | ||
1954 | gold_unreachable(); | |
ead1e424 ILT |
1955 | } |
1956 | ||
a9a60db6 ILT |
1957 | // Return the output address of the start of the merged section for |
1958 | // input section SHNDX in object OBJECT. | |
1959 | ||
1960 | uint64_t | |
1961 | Output_section::starting_output_address(const Relobj* object, | |
1962 | unsigned int shndx) const | |
1963 | { | |
1964 | gold_assert(object->is_section_specially_mapped(shndx)); | |
1965 | ||
1966 | uint64_t addr = this->address() + this->first_input_offset_; | |
1967 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
1968 | p != this->input_sections_.end(); | |
1969 | ++p) | |
1970 | { | |
1971 | addr = align_address(addr, p->addralign()); | |
1972 | ||
1973 | // It would be nice if we could use the existing output_offset | |
1974 | // method to get the output offset of input offset 0. | |
1975 | // Unfortunately we don't know for sure that input offset 0 is | |
1976 | // mapped at all. | |
1977 | if (p->is_merge_section_for(object, shndx)) | |
1978 | return addr; | |
1979 | ||
1980 | addr += p->data_size(); | |
1981 | } | |
1982 | gold_unreachable(); | |
1983 | } | |
1984 | ||
27bc2bce | 1985 | // Set the data size of an Output_section. This is where we handle |
ead1e424 ILT |
1986 | // setting the addresses of any Output_section_data objects. |
1987 | ||
1988 | void | |
27bc2bce | 1989 | Output_section::set_final_data_size() |
ead1e424 ILT |
1990 | { |
1991 | if (this->input_sections_.empty()) | |
27bc2bce ILT |
1992 | { |
1993 | this->set_data_size(this->current_data_size_for_child()); | |
1994 | return; | |
1995 | } | |
ead1e424 | 1996 | |
27bc2bce ILT |
1997 | uint64_t address = this->address(); |
1998 | off_t startoff = this->offset(); | |
ead1e424 ILT |
1999 | off_t off = startoff + this->first_input_offset_; |
2000 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2001 | p != this->input_sections_.end(); | |
2002 | ++p) | |
2003 | { | |
2004 | off = align_address(off, p->addralign()); | |
96803768 ILT |
2005 | p->set_address_and_file_offset(address + (off - startoff), off, |
2006 | startoff); | |
ead1e424 ILT |
2007 | off += p->data_size(); |
2008 | } | |
2009 | ||
2010 | this->set_data_size(off - startoff); | |
2011 | } | |
9a0910c3 | 2012 | |
a445fddf ILT |
2013 | // Reset the address and file offset. |
2014 | ||
2015 | void | |
2016 | Output_section::do_reset_address_and_file_offset() | |
2017 | { | |
2018 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2019 | p != this->input_sections_.end(); | |
2020 | ++p) | |
2021 | p->reset_address_and_file_offset(); | |
2022 | } | |
2023 | ||
7bf1f802 ILT |
2024 | // Set the TLS offset. Called only for SHT_TLS sections. |
2025 | ||
2026 | void | |
2027 | Output_section::do_set_tls_offset(uint64_t tls_base) | |
2028 | { | |
2029 | this->tls_offset_ = this->address() - tls_base; | |
2030 | } | |
2031 | ||
61ba1cf9 ILT |
2032 | // Write the section header to *OSHDR. |
2033 | ||
2034 | template<int size, bool big_endian> | |
2035 | void | |
16649710 ILT |
2036 | Output_section::write_header(const Layout* layout, |
2037 | const Stringpool* secnamepool, | |
61ba1cf9 ILT |
2038 | elfcpp::Shdr_write<size, big_endian>* oshdr) const |
2039 | { | |
2040 | oshdr->put_sh_name(secnamepool->get_offset(this->name_)); | |
2041 | oshdr->put_sh_type(this->type_); | |
6a74a719 ILT |
2042 | |
2043 | elfcpp::Elf_Xword flags = this->flags_; | |
755ab8af | 2044 | if (this->info_section_ != NULL && this->info_uses_section_index_) |
6a74a719 ILT |
2045 | flags |= elfcpp::SHF_INFO_LINK; |
2046 | oshdr->put_sh_flags(flags); | |
2047 | ||
61ba1cf9 ILT |
2048 | oshdr->put_sh_addr(this->address()); |
2049 | oshdr->put_sh_offset(this->offset()); | |
2050 | oshdr->put_sh_size(this->data_size()); | |
16649710 ILT |
2051 | if (this->link_section_ != NULL) |
2052 | oshdr->put_sh_link(this->link_section_->out_shndx()); | |
2053 | else if (this->should_link_to_symtab_) | |
2054 | oshdr->put_sh_link(layout->symtab_section()->out_shndx()); | |
2055 | else if (this->should_link_to_dynsym_) | |
2056 | oshdr->put_sh_link(layout->dynsym_section()->out_shndx()); | |
2057 | else | |
2058 | oshdr->put_sh_link(this->link_); | |
755ab8af ILT |
2059 | |
2060 | elfcpp::Elf_Word info; | |
16649710 | 2061 | if (this->info_section_ != NULL) |
755ab8af ILT |
2062 | { |
2063 | if (this->info_uses_section_index_) | |
2064 | info = this->info_section_->out_shndx(); | |
2065 | else | |
2066 | info = this->info_section_->symtab_index(); | |
2067 | } | |
6a74a719 | 2068 | else if (this->info_symndx_ != NULL) |
755ab8af | 2069 | info = this->info_symndx_->symtab_index(); |
16649710 | 2070 | else |
755ab8af ILT |
2071 | info = this->info_; |
2072 | oshdr->put_sh_info(info); | |
2073 | ||
61ba1cf9 ILT |
2074 | oshdr->put_sh_addralign(this->addralign_); |
2075 | oshdr->put_sh_entsize(this->entsize_); | |
a2fb1b05 ILT |
2076 | } |
2077 | ||
ead1e424 ILT |
2078 | // Write out the data. For input sections the data is written out by |
2079 | // Object::relocate, but we have to handle Output_section_data objects | |
2080 | // here. | |
2081 | ||
2082 | void | |
2083 | Output_section::do_write(Output_file* of) | |
2084 | { | |
96803768 ILT |
2085 | gold_assert(!this->requires_postprocessing()); |
2086 | ||
c51e6221 ILT |
2087 | off_t output_section_file_offset = this->offset(); |
2088 | for (Fill_list::iterator p = this->fills_.begin(); | |
2089 | p != this->fills_.end(); | |
2090 | ++p) | |
2091 | { | |
8851ecca | 2092 | std::string fill_data(parameters->target().code_fill(p->length())); |
c51e6221 | 2093 | of->write(output_section_file_offset + p->section_offset(), |
a445fddf | 2094 | fill_data.data(), fill_data.size()); |
c51e6221 ILT |
2095 | } |
2096 | ||
ead1e424 ILT |
2097 | for (Input_section_list::iterator p = this->input_sections_.begin(); |
2098 | p != this->input_sections_.end(); | |
2099 | ++p) | |
2100 | p->write(of); | |
2101 | } | |
2102 | ||
96803768 ILT |
2103 | // If a section requires postprocessing, create the buffer to use. |
2104 | ||
2105 | void | |
2106 | Output_section::create_postprocessing_buffer() | |
2107 | { | |
2108 | gold_assert(this->requires_postprocessing()); | |
1bedcac5 ILT |
2109 | |
2110 | if (this->postprocessing_buffer_ != NULL) | |
2111 | return; | |
96803768 ILT |
2112 | |
2113 | if (!this->input_sections_.empty()) | |
2114 | { | |
2115 | off_t off = this->first_input_offset_; | |
2116 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2117 | p != this->input_sections_.end(); | |
2118 | ++p) | |
2119 | { | |
2120 | off = align_address(off, p->addralign()); | |
2121 | p->finalize_data_size(); | |
2122 | off += p->data_size(); | |
2123 | } | |
2124 | this->set_current_data_size_for_child(off); | |
2125 | } | |
2126 | ||
2127 | off_t buffer_size = this->current_data_size_for_child(); | |
2128 | this->postprocessing_buffer_ = new unsigned char[buffer_size]; | |
2129 | } | |
2130 | ||
2131 | // Write all the data of an Output_section into the postprocessing | |
2132 | // buffer. This is used for sections which require postprocessing, | |
2133 | // such as compression. Input sections are handled by | |
2134 | // Object::Relocate. | |
2135 | ||
2136 | void | |
2137 | Output_section::write_to_postprocessing_buffer() | |
2138 | { | |
2139 | gold_assert(this->requires_postprocessing()); | |
2140 | ||
96803768 ILT |
2141 | unsigned char* buffer = this->postprocessing_buffer(); |
2142 | for (Fill_list::iterator p = this->fills_.begin(); | |
2143 | p != this->fills_.end(); | |
2144 | ++p) | |
2145 | { | |
8851ecca | 2146 | std::string fill_data(parameters->target().code_fill(p->length())); |
a445fddf ILT |
2147 | memcpy(buffer + p->section_offset(), fill_data.data(), |
2148 | fill_data.size()); | |
96803768 ILT |
2149 | } |
2150 | ||
2151 | off_t off = this->first_input_offset_; | |
2152 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2153 | p != this->input_sections_.end(); | |
2154 | ++p) | |
2155 | { | |
2156 | off = align_address(off, p->addralign()); | |
2157 | p->write_to_buffer(buffer + off); | |
2158 | off += p->data_size(); | |
2159 | } | |
2160 | } | |
2161 | ||
a445fddf ILT |
2162 | // Get the input sections for linker script processing. We leave |
2163 | // behind the Output_section_data entries. Note that this may be | |
2164 | // slightly incorrect for merge sections. We will leave them behind, | |
2165 | // but it is possible that the script says that they should follow | |
2166 | // some other input sections, as in: | |
2167 | // .rodata { *(.rodata) *(.rodata.cst*) } | |
2168 | // For that matter, we don't handle this correctly: | |
2169 | // .rodata { foo.o(.rodata.cst*) *(.rodata.cst*) } | |
2170 | // With luck this will never matter. | |
2171 | ||
2172 | uint64_t | |
2173 | Output_section::get_input_sections( | |
2174 | uint64_t address, | |
2175 | const std::string& fill, | |
2176 | std::list<std::pair<Relobj*, unsigned int> >* input_sections) | |
2177 | { | |
2178 | uint64_t orig_address = address; | |
2179 | ||
2180 | address = align_address(address, this->addralign()); | |
2181 | ||
2182 | Input_section_list remaining; | |
2183 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2184 | p != this->input_sections_.end(); | |
2185 | ++p) | |
2186 | { | |
2187 | if (p->is_input_section()) | |
2188 | input_sections->push_back(std::make_pair(p->relobj(), p->shndx())); | |
2189 | else | |
2190 | { | |
2191 | uint64_t aligned_address = align_address(address, p->addralign()); | |
2192 | if (aligned_address != address && !fill.empty()) | |
2193 | { | |
2194 | section_size_type length = | |
2195 | convert_to_section_size_type(aligned_address - address); | |
2196 | std::string this_fill; | |
2197 | this_fill.reserve(length); | |
2198 | while (this_fill.length() + fill.length() <= length) | |
2199 | this_fill += fill; | |
2200 | if (this_fill.length() < length) | |
2201 | this_fill.append(fill, 0, length - this_fill.length()); | |
2202 | ||
2203 | Output_section_data* posd = new Output_data_const(this_fill, 0); | |
2204 | remaining.push_back(Input_section(posd)); | |
2205 | } | |
2206 | address = aligned_address; | |
2207 | ||
2208 | remaining.push_back(*p); | |
2209 | ||
2210 | p->finalize_data_size(); | |
2211 | address += p->data_size(); | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | this->input_sections_.swap(remaining); | |
2216 | this->first_input_offset_ = 0; | |
2217 | ||
2218 | uint64_t data_size = address - orig_address; | |
2219 | this->set_current_data_size_for_child(data_size); | |
2220 | return data_size; | |
2221 | } | |
2222 | ||
2223 | // Add an input section from a script. | |
2224 | ||
2225 | void | |
2226 | Output_section::add_input_section_for_script(Relobj* object, | |
2227 | unsigned int shndx, | |
2228 | off_t data_size, | |
2229 | uint64_t addralign) | |
2230 | { | |
2231 | if (addralign > this->addralign_) | |
2232 | this->addralign_ = addralign; | |
2233 | ||
2234 | off_t offset_in_section = this->current_data_size_for_child(); | |
2235 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
2236 | addralign); | |
2237 | ||
2238 | this->set_current_data_size_for_child(aligned_offset_in_section | |
2239 | + data_size); | |
2240 | ||
2241 | this->input_sections_.push_back(Input_section(object, shndx, | |
2242 | data_size, addralign)); | |
2243 | } | |
2244 | ||
38c5e8b4 ILT |
2245 | // Print stats for merge sections to stderr. |
2246 | ||
2247 | void | |
2248 | Output_section::print_merge_stats() | |
2249 | { | |
2250 | Input_section_list::iterator p; | |
2251 | for (p = this->input_sections_.begin(); | |
2252 | p != this->input_sections_.end(); | |
2253 | ++p) | |
2254 | p->print_merge_stats(this->name_); | |
2255 | } | |
2256 | ||
a2fb1b05 ILT |
2257 | // Output segment methods. |
2258 | ||
2259 | Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags) | |
54dc6425 | 2260 | : output_data_(), |
75f65a3e | 2261 | output_bss_(), |
a2fb1b05 ILT |
2262 | vaddr_(0), |
2263 | paddr_(0), | |
2264 | memsz_(0), | |
a445fddf ILT |
2265 | max_align_(0), |
2266 | min_p_align_(0), | |
a2fb1b05 ILT |
2267 | offset_(0), |
2268 | filesz_(0), | |
2269 | type_(type), | |
ead1e424 | 2270 | flags_(flags), |
a445fddf ILT |
2271 | is_max_align_known_(false), |
2272 | are_addresses_set_(false) | |
a2fb1b05 ILT |
2273 | { |
2274 | } | |
2275 | ||
2276 | // Add an Output_section to an Output_segment. | |
2277 | ||
2278 | void | |
75f65a3e | 2279 | Output_segment::add_output_section(Output_section* os, |
dbe717ef ILT |
2280 | elfcpp::Elf_Word seg_flags, |
2281 | bool front) | |
a2fb1b05 | 2282 | { |
a3ad94ed | 2283 | gold_assert((os->flags() & elfcpp::SHF_ALLOC) != 0); |
a445fddf | 2284 | gold_assert(!this->is_max_align_known_); |
75f65a3e | 2285 | |
ead1e424 | 2286 | // Update the segment flags. |
75f65a3e | 2287 | this->flags_ |= seg_flags; |
75f65a3e ILT |
2288 | |
2289 | Output_segment::Output_data_list* pdl; | |
2290 | if (os->type() == elfcpp::SHT_NOBITS) | |
2291 | pdl = &this->output_bss_; | |
2292 | else | |
2293 | pdl = &this->output_data_; | |
54dc6425 | 2294 | |
a2fb1b05 ILT |
2295 | // So that PT_NOTE segments will work correctly, we need to ensure |
2296 | // that all SHT_NOTE sections are adjacent. This will normally | |
2297 | // happen automatically, because all the SHT_NOTE input sections | |
2298 | // will wind up in the same output section. However, it is possible | |
2299 | // for multiple SHT_NOTE input sections to have different section | |
2300 | // flags, and thus be in different output sections, but for the | |
2301 | // different section flags to map into the same segment flags and | |
2302 | // thus the same output segment. | |
54dc6425 ILT |
2303 | |
2304 | // Note that while there may be many input sections in an output | |
2305 | // section, there are normally only a few output sections in an | |
2306 | // output segment. This loop is expected to be fast. | |
2307 | ||
61ba1cf9 | 2308 | if (os->type() == elfcpp::SHT_NOTE && !pdl->empty()) |
a2fb1b05 | 2309 | { |
a3ad94ed | 2310 | Output_segment::Output_data_list::iterator p = pdl->end(); |
75f65a3e | 2311 | do |
54dc6425 | 2312 | { |
75f65a3e | 2313 | --p; |
54dc6425 ILT |
2314 | if ((*p)->is_section_type(elfcpp::SHT_NOTE)) |
2315 | { | |
dbe717ef | 2316 | // We don't worry about the FRONT parameter. |
54dc6425 | 2317 | ++p; |
75f65a3e | 2318 | pdl->insert(p, os); |
54dc6425 ILT |
2319 | return; |
2320 | } | |
2321 | } | |
75f65a3e | 2322 | while (p != pdl->begin()); |
54dc6425 ILT |
2323 | } |
2324 | ||
2325 | // Similarly, so that PT_TLS segments will work, we need to group | |
75f65a3e ILT |
2326 | // SHF_TLS sections. An SHF_TLS/SHT_NOBITS section is a special |
2327 | // case: we group the SHF_TLS/SHT_NOBITS sections right after the | |
2328 | // SHF_TLS/SHT_PROGBITS sections. This lets us set up PT_TLS | |
07f397ab ILT |
2329 | // correctly. SHF_TLS sections get added to both a PT_LOAD segment |
2330 | // and the PT_TLS segment -- we do this grouping only for the | |
2331 | // PT_LOAD segment. | |
2332 | if (this->type_ != elfcpp::PT_TLS | |
2333 | && (os->flags() & elfcpp::SHF_TLS) != 0 | |
2334 | && !this->output_data_.empty()) | |
54dc6425 | 2335 | { |
75f65a3e ILT |
2336 | pdl = &this->output_data_; |
2337 | bool nobits = os->type() == elfcpp::SHT_NOBITS; | |
ead1e424 | 2338 | bool sawtls = false; |
a3ad94ed | 2339 | Output_segment::Output_data_list::iterator p = pdl->end(); |
75f65a3e | 2340 | do |
a2fb1b05 | 2341 | { |
75f65a3e | 2342 | --p; |
ead1e424 ILT |
2343 | bool insert; |
2344 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
2345 | { | |
2346 | sawtls = true; | |
2347 | // Put a NOBITS section after the first TLS section. | |
2348 | // But a PROGBITS section after the first TLS/PROGBITS | |
2349 | // section. | |
2350 | insert = nobits || !(*p)->is_section_type(elfcpp::SHT_NOBITS); | |
2351 | } | |
2352 | else | |
2353 | { | |
2354 | // If we've gone past the TLS sections, but we've seen a | |
2355 | // TLS section, then we need to insert this section now. | |
2356 | insert = sawtls; | |
2357 | } | |
2358 | ||
2359 | if (insert) | |
a2fb1b05 | 2360 | { |
dbe717ef | 2361 | // We don't worry about the FRONT parameter. |
a2fb1b05 | 2362 | ++p; |
75f65a3e | 2363 | pdl->insert(p, os); |
a2fb1b05 ILT |
2364 | return; |
2365 | } | |
2366 | } | |
75f65a3e | 2367 | while (p != pdl->begin()); |
ead1e424 | 2368 | |
dbe717ef ILT |
2369 | // There are no TLS sections yet; put this one at the requested |
2370 | // location in the section list. | |
a2fb1b05 ILT |
2371 | } |
2372 | ||
dbe717ef ILT |
2373 | if (front) |
2374 | pdl->push_front(os); | |
2375 | else | |
2376 | pdl->push_back(os); | |
75f65a3e ILT |
2377 | } |
2378 | ||
1650c4ff ILT |
2379 | // Remove an Output_section from this segment. It is an error if it |
2380 | // is not present. | |
2381 | ||
2382 | void | |
2383 | Output_segment::remove_output_section(Output_section* os) | |
2384 | { | |
2385 | // We only need this for SHT_PROGBITS. | |
2386 | gold_assert(os->type() == elfcpp::SHT_PROGBITS); | |
2387 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
2388 | p != this->output_data_.end(); | |
2389 | ++p) | |
2390 | { | |
2391 | if (*p == os) | |
2392 | { | |
2393 | this->output_data_.erase(p); | |
2394 | return; | |
2395 | } | |
2396 | } | |
2397 | gold_unreachable(); | |
2398 | } | |
2399 | ||
75f65a3e ILT |
2400 | // Add an Output_data (which is not an Output_section) to the start of |
2401 | // a segment. | |
2402 | ||
2403 | void | |
2404 | Output_segment::add_initial_output_data(Output_data* od) | |
2405 | { | |
a445fddf | 2406 | gold_assert(!this->is_max_align_known_); |
75f65a3e ILT |
2407 | this->output_data_.push_front(od); |
2408 | } | |
2409 | ||
2410 | // Return the maximum alignment of the Output_data in Output_segment. | |
75f65a3e ILT |
2411 | |
2412 | uint64_t | |
a445fddf | 2413 | Output_segment::maximum_alignment() |
75f65a3e | 2414 | { |
a445fddf | 2415 | if (!this->is_max_align_known_) |
ead1e424 ILT |
2416 | { |
2417 | uint64_t addralign; | |
2418 | ||
a445fddf ILT |
2419 | addralign = Output_segment::maximum_alignment_list(&this->output_data_); |
2420 | if (addralign > this->max_align_) | |
2421 | this->max_align_ = addralign; | |
ead1e424 | 2422 | |
a445fddf ILT |
2423 | addralign = Output_segment::maximum_alignment_list(&this->output_bss_); |
2424 | if (addralign > this->max_align_) | |
2425 | this->max_align_ = addralign; | |
ead1e424 | 2426 | |
a445fddf | 2427 | this->is_max_align_known_ = true; |
ead1e424 ILT |
2428 | } |
2429 | ||
a445fddf | 2430 | return this->max_align_; |
75f65a3e ILT |
2431 | } |
2432 | ||
ead1e424 ILT |
2433 | // Return the maximum alignment of a list of Output_data. |
2434 | ||
2435 | uint64_t | |
a445fddf | 2436 | Output_segment::maximum_alignment_list(const Output_data_list* pdl) |
ead1e424 ILT |
2437 | { |
2438 | uint64_t ret = 0; | |
2439 | for (Output_data_list::const_iterator p = pdl->begin(); | |
2440 | p != pdl->end(); | |
2441 | ++p) | |
2442 | { | |
2443 | uint64_t addralign = (*p)->addralign(); | |
2444 | if (addralign > ret) | |
2445 | ret = addralign; | |
2446 | } | |
2447 | return ret; | |
2448 | } | |
2449 | ||
4f4c5f80 ILT |
2450 | // Return the number of dynamic relocs applied to this segment. |
2451 | ||
2452 | unsigned int | |
2453 | Output_segment::dynamic_reloc_count() const | |
2454 | { | |
2455 | return (this->dynamic_reloc_count_list(&this->output_data_) | |
2456 | + this->dynamic_reloc_count_list(&this->output_bss_)); | |
2457 | } | |
2458 | ||
2459 | // Return the number of dynamic relocs applied to an Output_data_list. | |
2460 | ||
2461 | unsigned int | |
2462 | Output_segment::dynamic_reloc_count_list(const Output_data_list* pdl) const | |
2463 | { | |
2464 | unsigned int count = 0; | |
2465 | for (Output_data_list::const_iterator p = pdl->begin(); | |
2466 | p != pdl->end(); | |
2467 | ++p) | |
2468 | count += (*p)->dynamic_reloc_count(); | |
2469 | return count; | |
2470 | } | |
2471 | ||
a445fddf ILT |
2472 | // Set the section addresses for an Output_segment. If RESET is true, |
2473 | // reset the addresses first. ADDR is the address and *POFF is the | |
2474 | // file offset. Set the section indexes starting with *PSHNDX. | |
2475 | // Return the address of the immediately following segment. Update | |
2476 | // *POFF and *PSHNDX. | |
75f65a3e ILT |
2477 | |
2478 | uint64_t | |
a445fddf | 2479 | Output_segment::set_section_addresses(bool reset, uint64_t addr, off_t* poff, |
ead1e424 | 2480 | unsigned int* pshndx) |
75f65a3e | 2481 | { |
a3ad94ed | 2482 | gold_assert(this->type_ == elfcpp::PT_LOAD); |
75f65a3e | 2483 | |
a445fddf ILT |
2484 | if (!reset && this->are_addresses_set_) |
2485 | { | |
2486 | gold_assert(this->paddr_ == addr); | |
2487 | addr = this->vaddr_; | |
2488 | } | |
2489 | else | |
2490 | { | |
2491 | this->vaddr_ = addr; | |
2492 | this->paddr_ = addr; | |
2493 | this->are_addresses_set_ = true; | |
2494 | } | |
75f65a3e ILT |
2495 | |
2496 | off_t orig_off = *poff; | |
2497 | this->offset_ = orig_off; | |
2498 | ||
a445fddf ILT |
2499 | addr = this->set_section_list_addresses(reset, &this->output_data_, |
2500 | addr, poff, pshndx); | |
75f65a3e ILT |
2501 | this->filesz_ = *poff - orig_off; |
2502 | ||
2503 | off_t off = *poff; | |
2504 | ||
a445fddf ILT |
2505 | uint64_t ret = this->set_section_list_addresses(reset, &this->output_bss_, |
2506 | addr, poff, pshndx); | |
75f65a3e ILT |
2507 | this->memsz_ = *poff - orig_off; |
2508 | ||
2509 | // Ignore the file offset adjustments made by the BSS Output_data | |
2510 | // objects. | |
2511 | *poff = off; | |
61ba1cf9 ILT |
2512 | |
2513 | return ret; | |
75f65a3e ILT |
2514 | } |
2515 | ||
b8e6aad9 ILT |
2516 | // Set the addresses and file offsets in a list of Output_data |
2517 | // structures. | |
75f65a3e ILT |
2518 | |
2519 | uint64_t | |
a445fddf | 2520 | Output_segment::set_section_list_addresses(bool reset, Output_data_list* pdl, |
ead1e424 ILT |
2521 | uint64_t addr, off_t* poff, |
2522 | unsigned int* pshndx) | |
75f65a3e | 2523 | { |
ead1e424 | 2524 | off_t startoff = *poff; |
75f65a3e | 2525 | |
ead1e424 | 2526 | off_t off = startoff; |
75f65a3e ILT |
2527 | for (Output_data_list::iterator p = pdl->begin(); |
2528 | p != pdl->end(); | |
2529 | ++p) | |
2530 | { | |
a445fddf ILT |
2531 | if (reset) |
2532 | (*p)->reset_address_and_file_offset(); | |
2533 | ||
2534 | // When using a linker script the section will most likely | |
2535 | // already have an address. | |
2536 | if (!(*p)->is_address_valid()) | |
3802b2dd ILT |
2537 | { |
2538 | off = align_address(off, (*p)->addralign()); | |
2539 | (*p)->set_address_and_file_offset(addr + (off - startoff), off); | |
2540 | } | |
a445fddf ILT |
2541 | else |
2542 | { | |
2543 | // The script may have inserted a skip forward, but it | |
2544 | // better not have moved backward. | |
3802b2dd ILT |
2545 | gold_assert((*p)->address() >= addr + (off - startoff)); |
2546 | off += (*p)->address() - (addr + (off - startoff)); | |
a445fddf ILT |
2547 | (*p)->set_file_offset(off); |
2548 | (*p)->finalize_data_size(); | |
2549 | } | |
ead1e424 ILT |
2550 | |
2551 | // Unless this is a PT_TLS segment, we want to ignore the size | |
2552 | // of a SHF_TLS/SHT_NOBITS section. Such a section does not | |
2553 | // affect the size of a PT_LOAD segment. | |
2554 | if (this->type_ == elfcpp::PT_TLS | |
2555 | || !(*p)->is_section_flag_set(elfcpp::SHF_TLS) | |
2556 | || !(*p)->is_section_type(elfcpp::SHT_NOBITS)) | |
2557 | off += (*p)->data_size(); | |
75f65a3e | 2558 | |
ead1e424 ILT |
2559 | if ((*p)->is_section()) |
2560 | { | |
2561 | (*p)->set_out_shndx(*pshndx); | |
2562 | ++*pshndx; | |
2563 | } | |
75f65a3e ILT |
2564 | } |
2565 | ||
2566 | *poff = off; | |
ead1e424 | 2567 | return addr + (off - startoff); |
75f65a3e ILT |
2568 | } |
2569 | ||
2570 | // For a non-PT_LOAD segment, set the offset from the sections, if | |
2571 | // any. | |
2572 | ||
2573 | void | |
2574 | Output_segment::set_offset() | |
2575 | { | |
a3ad94ed | 2576 | gold_assert(this->type_ != elfcpp::PT_LOAD); |
75f65a3e | 2577 | |
a445fddf ILT |
2578 | gold_assert(!this->are_addresses_set_); |
2579 | ||
75f65a3e ILT |
2580 | if (this->output_data_.empty() && this->output_bss_.empty()) |
2581 | { | |
2582 | this->vaddr_ = 0; | |
2583 | this->paddr_ = 0; | |
a445fddf | 2584 | this->are_addresses_set_ = true; |
75f65a3e | 2585 | this->memsz_ = 0; |
a445fddf | 2586 | this->min_p_align_ = 0; |
75f65a3e ILT |
2587 | this->offset_ = 0; |
2588 | this->filesz_ = 0; | |
2589 | return; | |
2590 | } | |
2591 | ||
2592 | const Output_data* first; | |
2593 | if (this->output_data_.empty()) | |
2594 | first = this->output_bss_.front(); | |
2595 | else | |
2596 | first = this->output_data_.front(); | |
2597 | this->vaddr_ = first->address(); | |
a445fddf ILT |
2598 | this->paddr_ = (first->has_load_address() |
2599 | ? first->load_address() | |
2600 | : this->vaddr_); | |
2601 | this->are_addresses_set_ = true; | |
75f65a3e ILT |
2602 | this->offset_ = first->offset(); |
2603 | ||
2604 | if (this->output_data_.empty()) | |
2605 | this->filesz_ = 0; | |
2606 | else | |
2607 | { | |
2608 | const Output_data* last_data = this->output_data_.back(); | |
2609 | this->filesz_ = (last_data->address() | |
2610 | + last_data->data_size() | |
2611 | - this->vaddr_); | |
2612 | } | |
2613 | ||
2614 | const Output_data* last; | |
2615 | if (this->output_bss_.empty()) | |
2616 | last = this->output_data_.back(); | |
2617 | else | |
2618 | last = this->output_bss_.back(); | |
2619 | this->memsz_ = (last->address() | |
2620 | + last->data_size() | |
2621 | - this->vaddr_); | |
75f65a3e ILT |
2622 | } |
2623 | ||
7bf1f802 ILT |
2624 | // Set the TLS offsets of the sections in the PT_TLS segment. |
2625 | ||
2626 | void | |
2627 | Output_segment::set_tls_offsets() | |
2628 | { | |
2629 | gold_assert(this->type_ == elfcpp::PT_TLS); | |
2630 | ||
2631 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
2632 | p != this->output_data_.end(); | |
2633 | ++p) | |
2634 | (*p)->set_tls_offset(this->vaddr_); | |
2635 | ||
2636 | for (Output_data_list::iterator p = this->output_bss_.begin(); | |
2637 | p != this->output_bss_.end(); | |
2638 | ++p) | |
2639 | (*p)->set_tls_offset(this->vaddr_); | |
2640 | } | |
2641 | ||
a445fddf ILT |
2642 | // Return the address of the first section. |
2643 | ||
2644 | uint64_t | |
2645 | Output_segment::first_section_load_address() const | |
2646 | { | |
2647 | for (Output_data_list::const_iterator p = this->output_data_.begin(); | |
2648 | p != this->output_data_.end(); | |
2649 | ++p) | |
2650 | if ((*p)->is_section()) | |
2651 | return (*p)->has_load_address() ? (*p)->load_address() : (*p)->address(); | |
2652 | ||
2653 | for (Output_data_list::const_iterator p = this->output_bss_.begin(); | |
2654 | p != this->output_bss_.end(); | |
2655 | ++p) | |
2656 | if ((*p)->is_section()) | |
2657 | return (*p)->has_load_address() ? (*p)->load_address() : (*p)->address(); | |
2658 | ||
2659 | gold_unreachable(); | |
2660 | } | |
2661 | ||
75f65a3e ILT |
2662 | // Return the number of Output_sections in an Output_segment. |
2663 | ||
2664 | unsigned int | |
2665 | Output_segment::output_section_count() const | |
2666 | { | |
2667 | return (this->output_section_count_list(&this->output_data_) | |
2668 | + this->output_section_count_list(&this->output_bss_)); | |
2669 | } | |
2670 | ||
2671 | // Return the number of Output_sections in an Output_data_list. | |
2672 | ||
2673 | unsigned int | |
2674 | Output_segment::output_section_count_list(const Output_data_list* pdl) const | |
2675 | { | |
2676 | unsigned int count = 0; | |
2677 | for (Output_data_list::const_iterator p = pdl->begin(); | |
2678 | p != pdl->end(); | |
2679 | ++p) | |
2680 | { | |
2681 | if ((*p)->is_section()) | |
2682 | ++count; | |
2683 | } | |
2684 | return count; | |
a2fb1b05 ILT |
2685 | } |
2686 | ||
1c4f3631 ILT |
2687 | // Return the section attached to the list segment with the lowest |
2688 | // load address. This is used when handling a PHDRS clause in a | |
2689 | // linker script. | |
2690 | ||
2691 | Output_section* | |
2692 | Output_segment::section_with_lowest_load_address() const | |
2693 | { | |
2694 | Output_section* found = NULL; | |
2695 | uint64_t found_lma = 0; | |
2696 | this->lowest_load_address_in_list(&this->output_data_, &found, &found_lma); | |
2697 | ||
2698 | Output_section* found_data = found; | |
2699 | this->lowest_load_address_in_list(&this->output_bss_, &found, &found_lma); | |
2700 | if (found != found_data && found_data != NULL) | |
2701 | { | |
2702 | gold_error(_("nobits section %s may not precede progbits section %s " | |
2703 | "in same segment"), | |
2704 | found->name(), found_data->name()); | |
2705 | return NULL; | |
2706 | } | |
2707 | ||
2708 | return found; | |
2709 | } | |
2710 | ||
2711 | // Look through a list for a section with a lower load address. | |
2712 | ||
2713 | void | |
2714 | Output_segment::lowest_load_address_in_list(const Output_data_list* pdl, | |
2715 | Output_section** found, | |
2716 | uint64_t* found_lma) const | |
2717 | { | |
2718 | for (Output_data_list::const_iterator p = pdl->begin(); | |
2719 | p != pdl->end(); | |
2720 | ++p) | |
2721 | { | |
2722 | if (!(*p)->is_section()) | |
2723 | continue; | |
2724 | Output_section* os = static_cast<Output_section*>(*p); | |
2725 | uint64_t lma = (os->has_load_address() | |
2726 | ? os->load_address() | |
2727 | : os->address()); | |
2728 | if (*found == NULL || lma < *found_lma) | |
2729 | { | |
2730 | *found = os; | |
2731 | *found_lma = lma; | |
2732 | } | |
2733 | } | |
2734 | } | |
2735 | ||
61ba1cf9 ILT |
2736 | // Write the segment data into *OPHDR. |
2737 | ||
2738 | template<int size, bool big_endian> | |
2739 | void | |
ead1e424 | 2740 | Output_segment::write_header(elfcpp::Phdr_write<size, big_endian>* ophdr) |
61ba1cf9 ILT |
2741 | { |
2742 | ophdr->put_p_type(this->type_); | |
2743 | ophdr->put_p_offset(this->offset_); | |
2744 | ophdr->put_p_vaddr(this->vaddr_); | |
2745 | ophdr->put_p_paddr(this->paddr_); | |
2746 | ophdr->put_p_filesz(this->filesz_); | |
2747 | ophdr->put_p_memsz(this->memsz_); | |
2748 | ophdr->put_p_flags(this->flags_); | |
a445fddf | 2749 | ophdr->put_p_align(std::max(this->min_p_align_, this->maximum_alignment())); |
61ba1cf9 ILT |
2750 | } |
2751 | ||
2752 | // Write the section headers into V. | |
2753 | ||
2754 | template<int size, bool big_endian> | |
2755 | unsigned char* | |
16649710 ILT |
2756 | Output_segment::write_section_headers(const Layout* layout, |
2757 | const Stringpool* secnamepool, | |
ead1e424 | 2758 | unsigned char* v, |
7d1a9ebb | 2759 | unsigned int *pshndx) const |
5482377d | 2760 | { |
ead1e424 ILT |
2761 | // Every section that is attached to a segment must be attached to a |
2762 | // PT_LOAD segment, so we only write out section headers for PT_LOAD | |
2763 | // segments. | |
2764 | if (this->type_ != elfcpp::PT_LOAD) | |
2765 | return v; | |
2766 | ||
7d1a9ebb ILT |
2767 | v = this->write_section_headers_list<size, big_endian>(layout, secnamepool, |
2768 | &this->output_data_, | |
2769 | v, pshndx); | |
2770 | v = this->write_section_headers_list<size, big_endian>(layout, secnamepool, | |
2771 | &this->output_bss_, | |
2772 | v, pshndx); | |
61ba1cf9 ILT |
2773 | return v; |
2774 | } | |
2775 | ||
2776 | template<int size, bool big_endian> | |
2777 | unsigned char* | |
16649710 ILT |
2778 | Output_segment::write_section_headers_list(const Layout* layout, |
2779 | const Stringpool* secnamepool, | |
61ba1cf9 | 2780 | const Output_data_list* pdl, |
ead1e424 | 2781 | unsigned char* v, |
7d1a9ebb | 2782 | unsigned int* pshndx) const |
61ba1cf9 ILT |
2783 | { |
2784 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2785 | for (Output_data_list::const_iterator p = pdl->begin(); | |
2786 | p != pdl->end(); | |
2787 | ++p) | |
2788 | { | |
2789 | if ((*p)->is_section()) | |
2790 | { | |
5482377d | 2791 | const Output_section* ps = static_cast<const Output_section*>(*p); |
a3ad94ed | 2792 | gold_assert(*pshndx == ps->out_shndx()); |
61ba1cf9 | 2793 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 2794 | ps->write_header(layout, secnamepool, &oshdr); |
61ba1cf9 | 2795 | v += shdr_size; |
ead1e424 | 2796 | ++*pshndx; |
61ba1cf9 ILT |
2797 | } |
2798 | } | |
2799 | return v; | |
2800 | } | |
2801 | ||
a2fb1b05 ILT |
2802 | // Output_file methods. |
2803 | ||
14144f39 ILT |
2804 | Output_file::Output_file(const char* name) |
2805 | : name_(name), | |
61ba1cf9 ILT |
2806 | o_(-1), |
2807 | file_size_(0), | |
c420411f | 2808 | base_(NULL), |
516cb3d0 ILT |
2809 | map_is_anonymous_(false), |
2810 | is_temporary_(false) | |
61ba1cf9 ILT |
2811 | { |
2812 | } | |
2813 | ||
2814 | // Open the output file. | |
2815 | ||
a2fb1b05 | 2816 | void |
61ba1cf9 | 2817 | Output_file::open(off_t file_size) |
a2fb1b05 | 2818 | { |
61ba1cf9 ILT |
2819 | this->file_size_ = file_size; |
2820 | ||
4e9d8586 ILT |
2821 | // Unlink the file first; otherwise the open() may fail if the file |
2822 | // is busy (e.g. it's an executable that's currently being executed). | |
2823 | // | |
2824 | // However, the linker may be part of a system where a zero-length | |
2825 | // file is created for it to write to, with tight permissions (gcc | |
2826 | // 2.95 did something like this). Unlinking the file would work | |
2827 | // around those permission controls, so we only unlink if the file | |
2828 | // has a non-zero size. We also unlink only regular files to avoid | |
2829 | // trouble with directories/etc. | |
2830 | // | |
2831 | // If we fail, continue; this command is merely a best-effort attempt | |
2832 | // to improve the odds for open(). | |
2833 | ||
42a1b686 | 2834 | // We let the name "-" mean "stdout" |
516cb3d0 | 2835 | if (!this->is_temporary_) |
42a1b686 | 2836 | { |
516cb3d0 ILT |
2837 | if (strcmp(this->name_, "-") == 0) |
2838 | this->o_ = STDOUT_FILENO; | |
2839 | else | |
2840 | { | |
2841 | struct stat s; | |
2842 | if (::stat(this->name_, &s) == 0 && s.st_size != 0) | |
2843 | unlink_if_ordinary(this->name_); | |
2844 | ||
8851ecca | 2845 | int mode = parameters->options().relocatable() ? 0666 : 0777; |
516cb3d0 ILT |
2846 | int o = ::open(this->name_, O_RDWR | O_CREAT | O_TRUNC, mode); |
2847 | if (o < 0) | |
2848 | gold_fatal(_("%s: open: %s"), this->name_, strerror(errno)); | |
2849 | this->o_ = o; | |
2850 | } | |
42a1b686 | 2851 | } |
61ba1cf9 | 2852 | |
27bc2bce ILT |
2853 | this->map(); |
2854 | } | |
2855 | ||
2856 | // Resize the output file. | |
2857 | ||
2858 | void | |
2859 | Output_file::resize(off_t file_size) | |
2860 | { | |
c420411f ILT |
2861 | // If the mmap is mapping an anonymous memory buffer, this is easy: |
2862 | // just mremap to the new size. If it's mapping to a file, we want | |
2863 | // to unmap to flush to the file, then remap after growing the file. | |
2864 | if (this->map_is_anonymous_) | |
2865 | { | |
2866 | void* base = ::mremap(this->base_, this->file_size_, file_size, | |
2867 | MREMAP_MAYMOVE); | |
2868 | if (base == MAP_FAILED) | |
2869 | gold_fatal(_("%s: mremap: %s"), this->name_, strerror(errno)); | |
2870 | this->base_ = static_cast<unsigned char*>(base); | |
2871 | this->file_size_ = file_size; | |
2872 | } | |
2873 | else | |
2874 | { | |
2875 | this->unmap(); | |
2876 | this->file_size_ = file_size; | |
2877 | this->map(); | |
2878 | } | |
27bc2bce ILT |
2879 | } |
2880 | ||
2881 | // Map the file into memory. | |
2882 | ||
2883 | void | |
2884 | Output_file::map() | |
2885 | { | |
c420411f | 2886 | const int o = this->o_; |
61ba1cf9 | 2887 | |
c420411f ILT |
2888 | // If the output file is not a regular file, don't try to mmap it; |
2889 | // instead, we'll mmap a block of memory (an anonymous buffer), and | |
2890 | // then later write the buffer to the file. | |
2891 | void* base; | |
2892 | struct stat statbuf; | |
42a1b686 ILT |
2893 | if (o == STDOUT_FILENO || o == STDERR_FILENO |
2894 | || ::fstat(o, &statbuf) != 0 | |
516cb3d0 ILT |
2895 | || !S_ISREG(statbuf.st_mode) |
2896 | || this->is_temporary_) | |
c420411f ILT |
2897 | { |
2898 | this->map_is_anonymous_ = true; | |
2899 | base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, | |
2900 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
2901 | } | |
2902 | else | |
2903 | { | |
2904 | // Write out one byte to make the file the right size. | |
2905 | if (::lseek(o, this->file_size_ - 1, SEEK_SET) < 0) | |
2906 | gold_fatal(_("%s: lseek: %s"), this->name_, strerror(errno)); | |
2907 | char b = 0; | |
2908 | if (::write(o, &b, 1) != 1) | |
2909 | gold_fatal(_("%s: write: %s"), this->name_, strerror(errno)); | |
2910 | ||
2911 | // Map the file into memory. | |
2912 | this->map_is_anonymous_ = false; | |
2913 | base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, | |
2914 | MAP_SHARED, o, 0); | |
2915 | } | |
61ba1cf9 | 2916 | if (base == MAP_FAILED) |
75f2446e | 2917 | gold_fatal(_("%s: mmap: %s"), this->name_, strerror(errno)); |
61ba1cf9 ILT |
2918 | this->base_ = static_cast<unsigned char*>(base); |
2919 | } | |
2920 | ||
c420411f | 2921 | // Unmap the file from memory. |
61ba1cf9 ILT |
2922 | |
2923 | void | |
c420411f | 2924 | Output_file::unmap() |
61ba1cf9 ILT |
2925 | { |
2926 | if (::munmap(this->base_, this->file_size_) < 0) | |
a0c4fb0a | 2927 | gold_error(_("%s: munmap: %s"), this->name_, strerror(errno)); |
61ba1cf9 | 2928 | this->base_ = NULL; |
c420411f ILT |
2929 | } |
2930 | ||
2931 | // Close the output file. | |
2932 | ||
2933 | void | |
2934 | Output_file::close() | |
2935 | { | |
2936 | // If the map isn't file-backed, we need to write it now. | |
516cb3d0 | 2937 | if (this->map_is_anonymous_ && !this->is_temporary_) |
c420411f ILT |
2938 | { |
2939 | size_t bytes_to_write = this->file_size_; | |
2940 | while (bytes_to_write > 0) | |
2941 | { | |
2942 | ssize_t bytes_written = ::write(this->o_, this->base_, bytes_to_write); | |
2943 | if (bytes_written == 0) | |
2944 | gold_error(_("%s: write: unexpected 0 return-value"), this->name_); | |
2945 | else if (bytes_written < 0) | |
2946 | gold_error(_("%s: write: %s"), this->name_, strerror(errno)); | |
2947 | else | |
2948 | bytes_to_write -= bytes_written; | |
2949 | } | |
2950 | } | |
2951 | this->unmap(); | |
61ba1cf9 | 2952 | |
42a1b686 | 2953 | // We don't close stdout or stderr |
516cb3d0 ILT |
2954 | if (this->o_ != STDOUT_FILENO |
2955 | && this->o_ != STDERR_FILENO | |
2956 | && !this->is_temporary_) | |
42a1b686 ILT |
2957 | if (::close(this->o_) < 0) |
2958 | gold_error(_("%s: close: %s"), this->name_, strerror(errno)); | |
61ba1cf9 | 2959 | this->o_ = -1; |
a2fb1b05 ILT |
2960 | } |
2961 | ||
2962 | // Instantiate the templates we need. We could use the configure | |
2963 | // script to restrict this to only the ones for implemented targets. | |
2964 | ||
193a53d9 | 2965 | #ifdef HAVE_TARGET_32_LITTLE |
a2fb1b05 ILT |
2966 | template |
2967 | off_t | |
2968 | Output_section::add_input_section<32, false>( | |
730cdc88 | 2969 | Sized_relobj<32, false>* object, |
ead1e424 | 2970 | unsigned int shndx, |
a2fb1b05 | 2971 | const char* secname, |
730cdc88 | 2972 | const elfcpp::Shdr<32, false>& shdr, |
a445fddf ILT |
2973 | unsigned int reloc_shndx, |
2974 | bool have_sections_script); | |
193a53d9 | 2975 | #endif |
a2fb1b05 | 2976 | |
193a53d9 | 2977 | #ifdef HAVE_TARGET_32_BIG |
a2fb1b05 ILT |
2978 | template |
2979 | off_t | |
2980 | Output_section::add_input_section<32, true>( | |
730cdc88 | 2981 | Sized_relobj<32, true>* object, |
ead1e424 | 2982 | unsigned int shndx, |
a2fb1b05 | 2983 | const char* secname, |
730cdc88 | 2984 | const elfcpp::Shdr<32, true>& shdr, |
a445fddf ILT |
2985 | unsigned int reloc_shndx, |
2986 | bool have_sections_script); | |
193a53d9 | 2987 | #endif |
a2fb1b05 | 2988 | |
193a53d9 | 2989 | #ifdef HAVE_TARGET_64_LITTLE |
a2fb1b05 ILT |
2990 | template |
2991 | off_t | |
2992 | Output_section::add_input_section<64, false>( | |
730cdc88 | 2993 | Sized_relobj<64, false>* object, |
ead1e424 | 2994 | unsigned int shndx, |
a2fb1b05 | 2995 | const char* secname, |
730cdc88 | 2996 | const elfcpp::Shdr<64, false>& shdr, |
a445fddf ILT |
2997 | unsigned int reloc_shndx, |
2998 | bool have_sections_script); | |
193a53d9 | 2999 | #endif |
a2fb1b05 | 3000 | |
193a53d9 | 3001 | #ifdef HAVE_TARGET_64_BIG |
a2fb1b05 ILT |
3002 | template |
3003 | off_t | |
3004 | Output_section::add_input_section<64, true>( | |
730cdc88 | 3005 | Sized_relobj<64, true>* object, |
ead1e424 | 3006 | unsigned int shndx, |
a2fb1b05 | 3007 | const char* secname, |
730cdc88 | 3008 | const elfcpp::Shdr<64, true>& shdr, |
a445fddf ILT |
3009 | unsigned int reloc_shndx, |
3010 | bool have_sections_script); | |
193a53d9 | 3011 | #endif |
a2fb1b05 | 3012 | |
193a53d9 | 3013 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
3014 | template |
3015 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>; | |
193a53d9 | 3016 | #endif |
c06b7b0b | 3017 | |
193a53d9 | 3018 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
3019 | template |
3020 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, true>; | |
193a53d9 | 3021 | #endif |
c06b7b0b | 3022 | |
193a53d9 | 3023 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
3024 | template |
3025 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, false>; | |
193a53d9 | 3026 | #endif |
c06b7b0b | 3027 | |
193a53d9 | 3028 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
3029 | template |
3030 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, true>; | |
193a53d9 | 3031 | #endif |
c06b7b0b | 3032 | |
193a53d9 | 3033 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
3034 | template |
3035 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, false>; | |
193a53d9 | 3036 | #endif |
c06b7b0b | 3037 | |
193a53d9 | 3038 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
3039 | template |
3040 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, true>; | |
193a53d9 | 3041 | #endif |
c06b7b0b | 3042 | |
193a53d9 | 3043 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
3044 | template |
3045 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, false>; | |
193a53d9 | 3046 | #endif |
c06b7b0b | 3047 | |
193a53d9 | 3048 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
3049 | template |
3050 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, true>; | |
193a53d9 | 3051 | #endif |
c06b7b0b | 3052 | |
193a53d9 | 3053 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
3054 | template |
3055 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
193a53d9 | 3056 | #endif |
c06b7b0b | 3057 | |
193a53d9 | 3058 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
3059 | template |
3060 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
193a53d9 | 3061 | #endif |
c06b7b0b | 3062 | |
193a53d9 | 3063 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
3064 | template |
3065 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
193a53d9 | 3066 | #endif |
c06b7b0b | 3067 | |
193a53d9 | 3068 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
3069 | template |
3070 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
193a53d9 | 3071 | #endif |
c06b7b0b | 3072 | |
193a53d9 | 3073 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
3074 | template |
3075 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
193a53d9 | 3076 | #endif |
c06b7b0b | 3077 | |
193a53d9 | 3078 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
3079 | template |
3080 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
193a53d9 | 3081 | #endif |
c06b7b0b | 3082 | |
193a53d9 | 3083 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
3084 | template |
3085 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
193a53d9 | 3086 | #endif |
c06b7b0b | 3087 | |
193a53d9 | 3088 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
3089 | template |
3090 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
193a53d9 | 3091 | #endif |
c06b7b0b | 3092 | |
6a74a719 ILT |
3093 | #ifdef HAVE_TARGET_32_LITTLE |
3094 | template | |
3095 | class Output_relocatable_relocs<elfcpp::SHT_REL, 32, false>; | |
3096 | #endif | |
3097 | ||
3098 | #ifdef HAVE_TARGET_32_BIG | |
3099 | template | |
3100 | class Output_relocatable_relocs<elfcpp::SHT_REL, 32, true>; | |
3101 | #endif | |
3102 | ||
3103 | #ifdef HAVE_TARGET_64_LITTLE | |
3104 | template | |
3105 | class Output_relocatable_relocs<elfcpp::SHT_REL, 64, false>; | |
3106 | #endif | |
3107 | ||
3108 | #ifdef HAVE_TARGET_64_BIG | |
3109 | template | |
3110 | class Output_relocatable_relocs<elfcpp::SHT_REL, 64, true>; | |
3111 | #endif | |
3112 | ||
3113 | #ifdef HAVE_TARGET_32_LITTLE | |
3114 | template | |
3115 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 32, false>; | |
3116 | #endif | |
3117 | ||
3118 | #ifdef HAVE_TARGET_32_BIG | |
3119 | template | |
3120 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 32, true>; | |
3121 | #endif | |
3122 | ||
3123 | #ifdef HAVE_TARGET_64_LITTLE | |
3124 | template | |
3125 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 64, false>; | |
3126 | #endif | |
3127 | ||
3128 | #ifdef HAVE_TARGET_64_BIG | |
3129 | template | |
3130 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 64, true>; | |
3131 | #endif | |
3132 | ||
3133 | #ifdef HAVE_TARGET_32_LITTLE | |
3134 | template | |
3135 | class Output_data_group<32, false>; | |
3136 | #endif | |
3137 | ||
3138 | #ifdef HAVE_TARGET_32_BIG | |
3139 | template | |
3140 | class Output_data_group<32, true>; | |
3141 | #endif | |
3142 | ||
3143 | #ifdef HAVE_TARGET_64_LITTLE | |
3144 | template | |
3145 | class Output_data_group<64, false>; | |
3146 | #endif | |
3147 | ||
3148 | #ifdef HAVE_TARGET_64_BIG | |
3149 | template | |
3150 | class Output_data_group<64, true>; | |
3151 | #endif | |
3152 | ||
193a53d9 | 3153 | #ifdef HAVE_TARGET_32_LITTLE |
ead1e424 | 3154 | template |
dbe717ef | 3155 | class Output_data_got<32, false>; |
193a53d9 | 3156 | #endif |
ead1e424 | 3157 | |
193a53d9 | 3158 | #ifdef HAVE_TARGET_32_BIG |
ead1e424 | 3159 | template |
dbe717ef | 3160 | class Output_data_got<32, true>; |
193a53d9 | 3161 | #endif |
ead1e424 | 3162 | |
193a53d9 | 3163 | #ifdef HAVE_TARGET_64_LITTLE |
ead1e424 | 3164 | template |
dbe717ef | 3165 | class Output_data_got<64, false>; |
193a53d9 | 3166 | #endif |
ead1e424 | 3167 | |
193a53d9 | 3168 | #ifdef HAVE_TARGET_64_BIG |
ead1e424 | 3169 | template |
dbe717ef | 3170 | class Output_data_got<64, true>; |
193a53d9 | 3171 | #endif |
ead1e424 | 3172 | |
a2fb1b05 | 3173 | } // End namespace gold. |