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a2fb1b05 ILT |
1 | // output.cc -- manage the output file for gold |
2 | ||
e29e076a | 3 | // Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
6cb15b7f ILT |
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> | |
04bf7072 | 26 | #include <cstring> |
61ba1cf9 ILT |
27 | #include <cerrno> |
28 | #include <fcntl.h> | |
29 | #include <unistd.h> | |
30 | #include <sys/mman.h> | |
4e9d8586 | 31 | #include <sys/stat.h> |
75f65a3e | 32 | #include <algorithm> |
6a89f575 | 33 | #include "libiberty.h" |
a2fb1b05 | 34 | |
7e1edb90 | 35 | #include "parameters.h" |
a2fb1b05 | 36 | #include "object.h" |
ead1e424 ILT |
37 | #include "symtab.h" |
38 | #include "reloc.h" | |
b8e6aad9 | 39 | #include "merge.h" |
2a00e4fb | 40 | #include "descriptors.h" |
a2fb1b05 ILT |
41 | #include "output.h" |
42 | ||
c420411f ILT |
43 | // Some BSD systems still use MAP_ANON instead of MAP_ANONYMOUS |
44 | #ifndef MAP_ANONYMOUS | |
45 | # define MAP_ANONYMOUS MAP_ANON | |
46 | #endif | |
47 | ||
9201d894 ILT |
48 | #ifndef HAVE_POSIX_FALLOCATE |
49 | // A dummy, non general, version of posix_fallocate. Here we just set | |
50 | // the file size and hope that there is enough disk space. FIXME: We | |
51 | // could allocate disk space by walking block by block and writing a | |
52 | // zero byte into each block. | |
53 | static int | |
54 | posix_fallocate(int o, off_t offset, off_t len) | |
55 | { | |
56 | return ftruncate(o, offset + len); | |
57 | } | |
58 | #endif // !defined(HAVE_POSIX_FALLOCATE) | |
59 | ||
a2fb1b05 ILT |
60 | namespace gold |
61 | { | |
62 | ||
a3ad94ed ILT |
63 | // Output_data variables. |
64 | ||
27bc2bce | 65 | bool Output_data::allocated_sizes_are_fixed; |
a3ad94ed | 66 | |
a2fb1b05 ILT |
67 | // Output_data methods. |
68 | ||
69 | Output_data::~Output_data() | |
70 | { | |
71 | } | |
72 | ||
730cdc88 ILT |
73 | // Return the default alignment for the target size. |
74 | ||
75 | uint64_t | |
76 | Output_data::default_alignment() | |
77 | { | |
8851ecca ILT |
78 | return Output_data::default_alignment_for_size( |
79 | parameters->target().get_size()); | |
730cdc88 ILT |
80 | } |
81 | ||
75f65a3e ILT |
82 | // Return the default alignment for a size--32 or 64. |
83 | ||
84 | uint64_t | |
730cdc88 | 85 | Output_data::default_alignment_for_size(int size) |
75f65a3e ILT |
86 | { |
87 | if (size == 32) | |
88 | return 4; | |
89 | else if (size == 64) | |
90 | return 8; | |
91 | else | |
a3ad94ed | 92 | gold_unreachable(); |
75f65a3e ILT |
93 | } |
94 | ||
75f65a3e ILT |
95 | // Output_section_header methods. This currently assumes that the |
96 | // segment and section lists are complete at construction time. | |
97 | ||
98 | Output_section_headers::Output_section_headers( | |
16649710 ILT |
99 | const Layout* layout, |
100 | const Layout::Segment_list* segment_list, | |
6a74a719 | 101 | const Layout::Section_list* section_list, |
16649710 | 102 | const Layout::Section_list* unattached_section_list, |
d491d34e ILT |
103 | const Stringpool* secnamepool, |
104 | const Output_section* shstrtab_section) | |
9025d29d | 105 | : layout_(layout), |
75f65a3e | 106 | segment_list_(segment_list), |
6a74a719 | 107 | section_list_(section_list), |
a3ad94ed | 108 | unattached_section_list_(unattached_section_list), |
d491d34e ILT |
109 | secnamepool_(secnamepool), |
110 | shstrtab_section_(shstrtab_section) | |
20e6d0d6 DK |
111 | { |
112 | } | |
113 | ||
114 | // Compute the current data size. | |
115 | ||
116 | off_t | |
117 | Output_section_headers::do_size() const | |
75f65a3e | 118 | { |
61ba1cf9 ILT |
119 | // Count all the sections. Start with 1 for the null section. |
120 | off_t count = 1; | |
8851ecca | 121 | if (!parameters->options().relocatable()) |
6a74a719 | 122 | { |
20e6d0d6 DK |
123 | for (Layout::Segment_list::const_iterator p = |
124 | this->segment_list_->begin(); | |
125 | p != this->segment_list_->end(); | |
6a74a719 ILT |
126 | ++p) |
127 | if ((*p)->type() == elfcpp::PT_LOAD) | |
128 | count += (*p)->output_section_count(); | |
129 | } | |
130 | else | |
131 | { | |
20e6d0d6 DK |
132 | for (Layout::Section_list::const_iterator p = |
133 | this->section_list_->begin(); | |
134 | p != this->section_list_->end(); | |
6a74a719 ILT |
135 | ++p) |
136 | if (((*p)->flags() & elfcpp::SHF_ALLOC) != 0) | |
137 | ++count; | |
138 | } | |
20e6d0d6 | 139 | count += this->unattached_section_list_->size(); |
75f65a3e | 140 | |
8851ecca | 141 | const int size = parameters->target().get_size(); |
75f65a3e ILT |
142 | int shdr_size; |
143 | if (size == 32) | |
144 | shdr_size = elfcpp::Elf_sizes<32>::shdr_size; | |
145 | else if (size == 64) | |
146 | shdr_size = elfcpp::Elf_sizes<64>::shdr_size; | |
147 | else | |
a3ad94ed | 148 | gold_unreachable(); |
75f65a3e | 149 | |
20e6d0d6 | 150 | return count * shdr_size; |
75f65a3e ILT |
151 | } |
152 | ||
61ba1cf9 ILT |
153 | // Write out the section headers. |
154 | ||
75f65a3e | 155 | void |
61ba1cf9 | 156 | Output_section_headers::do_write(Output_file* of) |
a2fb1b05 | 157 | { |
8851ecca | 158 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 159 | { |
9025d29d | 160 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
161 | case Parameters::TARGET_32_LITTLE: |
162 | this->do_sized_write<32, false>(of); | |
163 | break; | |
9025d29d | 164 | #endif |
8851ecca ILT |
165 | #ifdef HAVE_TARGET_32_BIG |
166 | case Parameters::TARGET_32_BIG: | |
167 | this->do_sized_write<32, true>(of); | |
168 | break; | |
9025d29d | 169 | #endif |
9025d29d | 170 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
171 | case Parameters::TARGET_64_LITTLE: |
172 | this->do_sized_write<64, false>(of); | |
173 | break; | |
9025d29d | 174 | #endif |
8851ecca ILT |
175 | #ifdef HAVE_TARGET_64_BIG |
176 | case Parameters::TARGET_64_BIG: | |
177 | this->do_sized_write<64, true>(of); | |
178 | break; | |
179 | #endif | |
180 | default: | |
181 | gold_unreachable(); | |
61ba1cf9 | 182 | } |
61ba1cf9 ILT |
183 | } |
184 | ||
185 | template<int size, bool big_endian> | |
186 | void | |
187 | Output_section_headers::do_sized_write(Output_file* of) | |
188 | { | |
189 | off_t all_shdrs_size = this->data_size(); | |
190 | unsigned char* view = of->get_output_view(this->offset(), all_shdrs_size); | |
191 | ||
192 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
193 | unsigned char* v = view; | |
194 | ||
195 | { | |
196 | typename elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
197 | oshdr.put_sh_name(0); | |
198 | oshdr.put_sh_type(elfcpp::SHT_NULL); | |
199 | oshdr.put_sh_flags(0); | |
200 | oshdr.put_sh_addr(0); | |
201 | oshdr.put_sh_offset(0); | |
d491d34e ILT |
202 | |
203 | size_t section_count = (this->data_size() | |
204 | / elfcpp::Elf_sizes<size>::shdr_size); | |
205 | if (section_count < elfcpp::SHN_LORESERVE) | |
206 | oshdr.put_sh_size(0); | |
207 | else | |
208 | oshdr.put_sh_size(section_count); | |
209 | ||
210 | unsigned int shstrndx = this->shstrtab_section_->out_shndx(); | |
211 | if (shstrndx < elfcpp::SHN_LORESERVE) | |
212 | oshdr.put_sh_link(0); | |
213 | else | |
214 | oshdr.put_sh_link(shstrndx); | |
215 | ||
61ba1cf9 ILT |
216 | oshdr.put_sh_info(0); |
217 | oshdr.put_sh_addralign(0); | |
218 | oshdr.put_sh_entsize(0); | |
219 | } | |
220 | ||
221 | v += shdr_size; | |
222 | ||
6a74a719 | 223 | unsigned int shndx = 1; |
8851ecca | 224 | if (!parameters->options().relocatable()) |
6a74a719 ILT |
225 | { |
226 | for (Layout::Segment_list::const_iterator p = | |
227 | this->segment_list_->begin(); | |
228 | p != this->segment_list_->end(); | |
229 | ++p) | |
230 | v = (*p)->write_section_headers<size, big_endian>(this->layout_, | |
231 | this->secnamepool_, | |
232 | v, | |
233 | &shndx); | |
234 | } | |
235 | else | |
236 | { | |
237 | for (Layout::Section_list::const_iterator p = | |
238 | this->section_list_->begin(); | |
239 | p != this->section_list_->end(); | |
240 | ++p) | |
241 | { | |
242 | // We do unallocated sections below, except that group | |
243 | // sections have to come first. | |
244 | if (((*p)->flags() & elfcpp::SHF_ALLOC) == 0 | |
245 | && (*p)->type() != elfcpp::SHT_GROUP) | |
246 | continue; | |
247 | gold_assert(shndx == (*p)->out_shndx()); | |
248 | elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
249 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); | |
250 | v += shdr_size; | |
251 | ++shndx; | |
252 | } | |
253 | } | |
254 | ||
a3ad94ed | 255 | for (Layout::Section_list::const_iterator p = |
16649710 ILT |
256 | this->unattached_section_list_->begin(); |
257 | p != this->unattached_section_list_->end(); | |
61ba1cf9 ILT |
258 | ++p) |
259 | { | |
6a74a719 ILT |
260 | // For a relocatable link, we did unallocated group sections |
261 | // above, since they have to come first. | |
262 | if ((*p)->type() == elfcpp::SHT_GROUP | |
8851ecca | 263 | && parameters->options().relocatable()) |
6a74a719 | 264 | continue; |
a3ad94ed | 265 | gold_assert(shndx == (*p)->out_shndx()); |
61ba1cf9 | 266 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 267 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); |
61ba1cf9 | 268 | v += shdr_size; |
ead1e424 | 269 | ++shndx; |
61ba1cf9 ILT |
270 | } |
271 | ||
272 | of->write_output_view(this->offset(), all_shdrs_size, view); | |
a2fb1b05 ILT |
273 | } |
274 | ||
54dc6425 ILT |
275 | // Output_segment_header methods. |
276 | ||
61ba1cf9 | 277 | Output_segment_headers::Output_segment_headers( |
61ba1cf9 | 278 | const Layout::Segment_list& segment_list) |
9025d29d | 279 | : segment_list_(segment_list) |
61ba1cf9 | 280 | { |
61ba1cf9 ILT |
281 | } |
282 | ||
54dc6425 | 283 | void |
61ba1cf9 | 284 | Output_segment_headers::do_write(Output_file* of) |
75f65a3e | 285 | { |
8851ecca | 286 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 287 | { |
9025d29d | 288 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
289 | case Parameters::TARGET_32_LITTLE: |
290 | this->do_sized_write<32, false>(of); | |
291 | break; | |
9025d29d | 292 | #endif |
8851ecca ILT |
293 | #ifdef HAVE_TARGET_32_BIG |
294 | case Parameters::TARGET_32_BIG: | |
295 | this->do_sized_write<32, true>(of); | |
296 | break; | |
9025d29d | 297 | #endif |
9025d29d | 298 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
299 | case Parameters::TARGET_64_LITTLE: |
300 | this->do_sized_write<64, false>(of); | |
301 | break; | |
9025d29d | 302 | #endif |
8851ecca ILT |
303 | #ifdef HAVE_TARGET_64_BIG |
304 | case Parameters::TARGET_64_BIG: | |
305 | this->do_sized_write<64, true>(of); | |
306 | break; | |
307 | #endif | |
308 | default: | |
309 | gold_unreachable(); | |
61ba1cf9 | 310 | } |
61ba1cf9 ILT |
311 | } |
312 | ||
313 | template<int size, bool big_endian> | |
314 | void | |
315 | Output_segment_headers::do_sized_write(Output_file* of) | |
316 | { | |
317 | const int phdr_size = elfcpp::Elf_sizes<size>::phdr_size; | |
318 | off_t all_phdrs_size = this->segment_list_.size() * phdr_size; | |
a445fddf | 319 | gold_assert(all_phdrs_size == this->data_size()); |
61ba1cf9 ILT |
320 | unsigned char* view = of->get_output_view(this->offset(), |
321 | all_phdrs_size); | |
322 | unsigned char* v = view; | |
323 | for (Layout::Segment_list::const_iterator p = this->segment_list_.begin(); | |
324 | p != this->segment_list_.end(); | |
325 | ++p) | |
326 | { | |
327 | elfcpp::Phdr_write<size, big_endian> ophdr(v); | |
328 | (*p)->write_header(&ophdr); | |
329 | v += phdr_size; | |
330 | } | |
331 | ||
a445fddf ILT |
332 | gold_assert(v - view == all_phdrs_size); |
333 | ||
61ba1cf9 | 334 | of->write_output_view(this->offset(), all_phdrs_size, view); |
75f65a3e ILT |
335 | } |
336 | ||
20e6d0d6 DK |
337 | off_t |
338 | Output_segment_headers::do_size() const | |
339 | { | |
340 | const int size = parameters->target().get_size(); | |
341 | int phdr_size; | |
342 | if (size == 32) | |
343 | phdr_size = elfcpp::Elf_sizes<32>::phdr_size; | |
344 | else if (size == 64) | |
345 | phdr_size = elfcpp::Elf_sizes<64>::phdr_size; | |
346 | else | |
347 | gold_unreachable(); | |
348 | ||
349 | return this->segment_list_.size() * phdr_size; | |
350 | } | |
351 | ||
75f65a3e ILT |
352 | // Output_file_header methods. |
353 | ||
9025d29d | 354 | Output_file_header::Output_file_header(const Target* target, |
75f65a3e | 355 | const Symbol_table* symtab, |
d391083d ILT |
356 | const Output_segment_headers* osh, |
357 | const char* entry) | |
9025d29d | 358 | : target_(target), |
75f65a3e | 359 | symtab_(symtab), |
61ba1cf9 | 360 | segment_header_(osh), |
75f65a3e | 361 | section_header_(NULL), |
d391083d ILT |
362 | shstrtab_(NULL), |
363 | entry_(entry) | |
75f65a3e | 364 | { |
20e6d0d6 | 365 | this->set_data_size(this->do_size()); |
75f65a3e ILT |
366 | } |
367 | ||
368 | // Set the section table information for a file header. | |
369 | ||
370 | void | |
371 | Output_file_header::set_section_info(const Output_section_headers* shdrs, | |
372 | const Output_section* shstrtab) | |
373 | { | |
374 | this->section_header_ = shdrs; | |
375 | this->shstrtab_ = shstrtab; | |
376 | } | |
377 | ||
378 | // Write out the file header. | |
379 | ||
380 | void | |
61ba1cf9 | 381 | Output_file_header::do_write(Output_file* of) |
54dc6425 | 382 | { |
27bc2bce ILT |
383 | gold_assert(this->offset() == 0); |
384 | ||
8851ecca | 385 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 386 | { |
9025d29d | 387 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
388 | case Parameters::TARGET_32_LITTLE: |
389 | this->do_sized_write<32, false>(of); | |
390 | break; | |
9025d29d | 391 | #endif |
8851ecca ILT |
392 | #ifdef HAVE_TARGET_32_BIG |
393 | case Parameters::TARGET_32_BIG: | |
394 | this->do_sized_write<32, true>(of); | |
395 | break; | |
9025d29d | 396 | #endif |
9025d29d | 397 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
398 | case Parameters::TARGET_64_LITTLE: |
399 | this->do_sized_write<64, false>(of); | |
400 | break; | |
9025d29d | 401 | #endif |
8851ecca ILT |
402 | #ifdef HAVE_TARGET_64_BIG |
403 | case Parameters::TARGET_64_BIG: | |
404 | this->do_sized_write<64, true>(of); | |
405 | break; | |
406 | #endif | |
407 | default: | |
408 | gold_unreachable(); | |
61ba1cf9 | 409 | } |
61ba1cf9 ILT |
410 | } |
411 | ||
412 | // Write out the file header with appropriate size and endianess. | |
413 | ||
414 | template<int size, bool big_endian> | |
415 | void | |
416 | Output_file_header::do_sized_write(Output_file* of) | |
417 | { | |
a3ad94ed | 418 | gold_assert(this->offset() == 0); |
61ba1cf9 ILT |
419 | |
420 | int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size; | |
421 | unsigned char* view = of->get_output_view(0, ehdr_size); | |
422 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
423 | ||
424 | unsigned char e_ident[elfcpp::EI_NIDENT]; | |
425 | memset(e_ident, 0, elfcpp::EI_NIDENT); | |
426 | e_ident[elfcpp::EI_MAG0] = elfcpp::ELFMAG0; | |
427 | e_ident[elfcpp::EI_MAG1] = elfcpp::ELFMAG1; | |
428 | e_ident[elfcpp::EI_MAG2] = elfcpp::ELFMAG2; | |
429 | e_ident[elfcpp::EI_MAG3] = elfcpp::ELFMAG3; | |
430 | if (size == 32) | |
431 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS32; | |
432 | else if (size == 64) | |
433 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS64; | |
434 | else | |
a3ad94ed | 435 | gold_unreachable(); |
61ba1cf9 ILT |
436 | e_ident[elfcpp::EI_DATA] = (big_endian |
437 | ? elfcpp::ELFDATA2MSB | |
438 | : elfcpp::ELFDATA2LSB); | |
439 | e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT; | |
61ba1cf9 ILT |
440 | oehdr.put_e_ident(e_ident); |
441 | ||
442 | elfcpp::ET e_type; | |
8851ecca | 443 | if (parameters->options().relocatable()) |
61ba1cf9 | 444 | e_type = elfcpp::ET_REL; |
374ad285 | 445 | else if (parameters->options().output_is_position_independent()) |
436ca963 | 446 | e_type = elfcpp::ET_DYN; |
61ba1cf9 ILT |
447 | else |
448 | e_type = elfcpp::ET_EXEC; | |
449 | oehdr.put_e_type(e_type); | |
450 | ||
451 | oehdr.put_e_machine(this->target_->machine_code()); | |
452 | oehdr.put_e_version(elfcpp::EV_CURRENT); | |
453 | ||
d391083d | 454 | oehdr.put_e_entry(this->entry<size>()); |
61ba1cf9 | 455 | |
6a74a719 ILT |
456 | if (this->segment_header_ == NULL) |
457 | oehdr.put_e_phoff(0); | |
458 | else | |
459 | oehdr.put_e_phoff(this->segment_header_->offset()); | |
460 | ||
61ba1cf9 | 461 | oehdr.put_e_shoff(this->section_header_->offset()); |
d5b40221 | 462 | oehdr.put_e_flags(this->target_->processor_specific_flags()); |
61ba1cf9 | 463 | oehdr.put_e_ehsize(elfcpp::Elf_sizes<size>::ehdr_size); |
6a74a719 ILT |
464 | |
465 | if (this->segment_header_ == NULL) | |
466 | { | |
467 | oehdr.put_e_phentsize(0); | |
468 | oehdr.put_e_phnum(0); | |
469 | } | |
470 | else | |
471 | { | |
472 | oehdr.put_e_phentsize(elfcpp::Elf_sizes<size>::phdr_size); | |
473 | oehdr.put_e_phnum(this->segment_header_->data_size() | |
474 | / elfcpp::Elf_sizes<size>::phdr_size); | |
475 | } | |
476 | ||
61ba1cf9 | 477 | oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size); |
d491d34e ILT |
478 | size_t section_count = (this->section_header_->data_size() |
479 | / elfcpp::Elf_sizes<size>::shdr_size); | |
480 | ||
481 | if (section_count < elfcpp::SHN_LORESERVE) | |
482 | oehdr.put_e_shnum(this->section_header_->data_size() | |
483 | / elfcpp::Elf_sizes<size>::shdr_size); | |
484 | else | |
485 | oehdr.put_e_shnum(0); | |
486 | ||
487 | unsigned int shstrndx = this->shstrtab_->out_shndx(); | |
488 | if (shstrndx < elfcpp::SHN_LORESERVE) | |
489 | oehdr.put_e_shstrndx(this->shstrtab_->out_shndx()); | |
490 | else | |
491 | oehdr.put_e_shstrndx(elfcpp::SHN_XINDEX); | |
61ba1cf9 | 492 | |
36959681 ILT |
493 | // Let the target adjust the ELF header, e.g., to set EI_OSABI in |
494 | // the e_ident field. | |
495 | parameters->target().adjust_elf_header(view, ehdr_size); | |
496 | ||
61ba1cf9 | 497 | of->write_output_view(0, ehdr_size, view); |
54dc6425 ILT |
498 | } |
499 | ||
d391083d ILT |
500 | // Return the value to use for the entry address. THIS->ENTRY_ is the |
501 | // symbol specified on the command line, if any. | |
502 | ||
503 | template<int size> | |
504 | typename elfcpp::Elf_types<size>::Elf_Addr | |
505 | Output_file_header::entry() | |
506 | { | |
507 | const bool should_issue_warning = (this->entry_ != NULL | |
8851ecca ILT |
508 | && !parameters->options().relocatable() |
509 | && !parameters->options().shared()); | |
d391083d ILT |
510 | |
511 | // FIXME: Need to support target specific entry symbol. | |
512 | const char* entry = this->entry_; | |
513 | if (entry == NULL) | |
514 | entry = "_start"; | |
515 | ||
516 | Symbol* sym = this->symtab_->lookup(entry); | |
517 | ||
518 | typename Sized_symbol<size>::Value_type v; | |
519 | if (sym != NULL) | |
520 | { | |
521 | Sized_symbol<size>* ssym; | |
522 | ssym = this->symtab_->get_sized_symbol<size>(sym); | |
523 | if (!ssym->is_defined() && should_issue_warning) | |
524 | gold_warning("entry symbol '%s' exists but is not defined", entry); | |
525 | v = ssym->value(); | |
526 | } | |
527 | else | |
528 | { | |
529 | // We couldn't find the entry symbol. See if we can parse it as | |
530 | // a number. This supports, e.g., -e 0x1000. | |
531 | char* endptr; | |
532 | v = strtoull(entry, &endptr, 0); | |
533 | if (*endptr != '\0') | |
534 | { | |
535 | if (should_issue_warning) | |
536 | gold_warning("cannot find entry symbol '%s'", entry); | |
537 | v = 0; | |
538 | } | |
539 | } | |
540 | ||
541 | return v; | |
542 | } | |
543 | ||
20e6d0d6 DK |
544 | // Compute the current data size. |
545 | ||
546 | off_t | |
547 | Output_file_header::do_size() const | |
548 | { | |
549 | const int size = parameters->target().get_size(); | |
550 | if (size == 32) | |
551 | return elfcpp::Elf_sizes<32>::ehdr_size; | |
552 | else if (size == 64) | |
553 | return elfcpp::Elf_sizes<64>::ehdr_size; | |
554 | else | |
555 | gold_unreachable(); | |
556 | } | |
557 | ||
dbe717ef ILT |
558 | // Output_data_const methods. |
559 | ||
560 | void | |
a3ad94ed | 561 | Output_data_const::do_write(Output_file* of) |
dbe717ef | 562 | { |
a3ad94ed ILT |
563 | of->write(this->offset(), this->data_.data(), this->data_.size()); |
564 | } | |
565 | ||
566 | // Output_data_const_buffer methods. | |
567 | ||
568 | void | |
569 | Output_data_const_buffer::do_write(Output_file* of) | |
570 | { | |
571 | of->write(this->offset(), this->p_, this->data_size()); | |
dbe717ef ILT |
572 | } |
573 | ||
574 | // Output_section_data methods. | |
575 | ||
16649710 ILT |
576 | // Record the output section, and set the entry size and such. |
577 | ||
578 | void | |
579 | Output_section_data::set_output_section(Output_section* os) | |
580 | { | |
581 | gold_assert(this->output_section_ == NULL); | |
582 | this->output_section_ = os; | |
583 | this->do_adjust_output_section(os); | |
584 | } | |
585 | ||
586 | // Return the section index of the output section. | |
587 | ||
dbe717ef ILT |
588 | unsigned int |
589 | Output_section_data::do_out_shndx() const | |
590 | { | |
a3ad94ed | 591 | gold_assert(this->output_section_ != NULL); |
dbe717ef ILT |
592 | return this->output_section_->out_shndx(); |
593 | } | |
594 | ||
759b1a24 ILT |
595 | // Set the alignment, which means we may need to update the alignment |
596 | // of the output section. | |
597 | ||
598 | void | |
599 | Output_section_data::set_addralign(uint64_t addralign) | |
600 | { | |
601 | this->addralign_ = addralign; | |
602 | if (this->output_section_ != NULL | |
603 | && this->output_section_->addralign() < addralign) | |
604 | this->output_section_->set_addralign(addralign); | |
605 | } | |
606 | ||
a3ad94ed ILT |
607 | // Output_data_strtab methods. |
608 | ||
27bc2bce | 609 | // Set the final data size. |
a3ad94ed ILT |
610 | |
611 | void | |
27bc2bce | 612 | Output_data_strtab::set_final_data_size() |
a3ad94ed ILT |
613 | { |
614 | this->strtab_->set_string_offsets(); | |
615 | this->set_data_size(this->strtab_->get_strtab_size()); | |
616 | } | |
617 | ||
618 | // Write out a string table. | |
619 | ||
620 | void | |
621 | Output_data_strtab::do_write(Output_file* of) | |
622 | { | |
623 | this->strtab_->write(of, this->offset()); | |
624 | } | |
625 | ||
c06b7b0b ILT |
626 | // Output_reloc methods. |
627 | ||
7bf1f802 ILT |
628 | // A reloc against a global symbol. |
629 | ||
630 | template<bool dynamic, int size, bool big_endian> | |
631 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
632 | Symbol* gsym, | |
633 | unsigned int type, | |
634 | Output_data* od, | |
e8c846c3 ILT |
635 | Address address, |
636 | bool is_relative) | |
7bf1f802 | 637 | : address_(address), local_sym_index_(GSYM_CODE), type_(type), |
dceae3c1 | 638 | is_relative_(is_relative), is_section_symbol_(false), shndx_(INVALID_CODE) |
7bf1f802 | 639 | { |
dceae3c1 ILT |
640 | // this->type_ is a bitfield; make sure TYPE fits. |
641 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
642 | this->u1_.gsym = gsym; |
643 | this->u2_.od = od; | |
dceae3c1 ILT |
644 | if (dynamic) |
645 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
646 | } |
647 | ||
648 | template<bool dynamic, int size, bool big_endian> | |
649 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
650 | Symbol* gsym, | |
651 | unsigned int type, | |
ef9beddf | 652 | Sized_relobj<size, big_endian>* relobj, |
7bf1f802 | 653 | unsigned int shndx, |
e8c846c3 ILT |
654 | Address address, |
655 | bool is_relative) | |
7bf1f802 | 656 | : address_(address), local_sym_index_(GSYM_CODE), type_(type), |
dceae3c1 | 657 | is_relative_(is_relative), is_section_symbol_(false), shndx_(shndx) |
7bf1f802 ILT |
658 | { |
659 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
660 | // this->type_ is a bitfield; make sure TYPE fits. |
661 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
662 | this->u1_.gsym = gsym; |
663 | this->u2_.relobj = relobj; | |
dceae3c1 ILT |
664 | if (dynamic) |
665 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
666 | } |
667 | ||
668 | // A reloc against a local symbol. | |
669 | ||
670 | template<bool dynamic, int size, bool big_endian> | |
671 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
672 | Sized_relobj<size, big_endian>* relobj, | |
673 | unsigned int local_sym_index, | |
674 | unsigned int type, | |
675 | Output_data* od, | |
e8c846c3 | 676 | Address address, |
dceae3c1 ILT |
677 | bool is_relative, |
678 | bool is_section_symbol) | |
7bf1f802 | 679 | : address_(address), local_sym_index_(local_sym_index), type_(type), |
dceae3c1 ILT |
680 | is_relative_(is_relative), is_section_symbol_(is_section_symbol), |
681 | shndx_(INVALID_CODE) | |
7bf1f802 ILT |
682 | { |
683 | gold_assert(local_sym_index != GSYM_CODE | |
684 | && local_sym_index != INVALID_CODE); | |
dceae3c1 ILT |
685 | // this->type_ is a bitfield; make sure TYPE fits. |
686 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
687 | this->u1_.relobj = relobj; |
688 | this->u2_.od = od; | |
dceae3c1 ILT |
689 | if (dynamic) |
690 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
691 | } |
692 | ||
693 | template<bool dynamic, int size, bool big_endian> | |
694 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
695 | Sized_relobj<size, big_endian>* relobj, | |
696 | unsigned int local_sym_index, | |
697 | unsigned int type, | |
698 | unsigned int shndx, | |
e8c846c3 | 699 | Address address, |
dceae3c1 ILT |
700 | bool is_relative, |
701 | bool is_section_symbol) | |
7bf1f802 | 702 | : address_(address), local_sym_index_(local_sym_index), type_(type), |
dceae3c1 ILT |
703 | is_relative_(is_relative), is_section_symbol_(is_section_symbol), |
704 | shndx_(shndx) | |
7bf1f802 ILT |
705 | { |
706 | gold_assert(local_sym_index != GSYM_CODE | |
707 | && local_sym_index != INVALID_CODE); | |
708 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
709 | // this->type_ is a bitfield; make sure TYPE fits. |
710 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
711 | this->u1_.relobj = relobj; |
712 | this->u2_.relobj = relobj; | |
dceae3c1 ILT |
713 | if (dynamic) |
714 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
715 | } |
716 | ||
717 | // A reloc against the STT_SECTION symbol of an output section. | |
718 | ||
719 | template<bool dynamic, int size, bool big_endian> | |
720 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
721 | Output_section* os, | |
722 | unsigned int type, | |
723 | Output_data* od, | |
724 | Address address) | |
725 | : address_(address), local_sym_index_(SECTION_CODE), type_(type), | |
dceae3c1 | 726 | is_relative_(false), is_section_symbol_(true), shndx_(INVALID_CODE) |
7bf1f802 | 727 | { |
dceae3c1 ILT |
728 | // this->type_ is a bitfield; make sure TYPE fits. |
729 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
730 | this->u1_.os = os; |
731 | this->u2_.od = od; | |
732 | if (dynamic) | |
dceae3c1 ILT |
733 | this->set_needs_dynsym_index(); |
734 | else | |
735 | os->set_needs_symtab_index(); | |
7bf1f802 ILT |
736 | } |
737 | ||
738 | template<bool dynamic, int size, bool big_endian> | |
739 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
740 | Output_section* os, | |
741 | unsigned int type, | |
ef9beddf | 742 | Sized_relobj<size, big_endian>* relobj, |
7bf1f802 ILT |
743 | unsigned int shndx, |
744 | Address address) | |
745 | : address_(address), local_sym_index_(SECTION_CODE), type_(type), | |
dceae3c1 | 746 | is_relative_(false), is_section_symbol_(true), shndx_(shndx) |
7bf1f802 ILT |
747 | { |
748 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
749 | // this->type_ is a bitfield; make sure TYPE fits. |
750 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
751 | this->u1_.os = os; |
752 | this->u2_.relobj = relobj; | |
753 | if (dynamic) | |
dceae3c1 ILT |
754 | this->set_needs_dynsym_index(); |
755 | else | |
756 | os->set_needs_symtab_index(); | |
757 | } | |
758 | ||
759 | // Record that we need a dynamic symbol index for this relocation. | |
760 | ||
761 | template<bool dynamic, int size, bool big_endian> | |
762 | void | |
763 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: | |
764 | set_needs_dynsym_index() | |
765 | { | |
766 | if (this->is_relative_) | |
767 | return; | |
768 | switch (this->local_sym_index_) | |
769 | { | |
770 | case INVALID_CODE: | |
771 | gold_unreachable(); | |
772 | ||
773 | case GSYM_CODE: | |
774 | this->u1_.gsym->set_needs_dynsym_entry(); | |
775 | break; | |
776 | ||
777 | case SECTION_CODE: | |
778 | this->u1_.os->set_needs_dynsym_index(); | |
779 | break; | |
780 | ||
781 | case 0: | |
782 | break; | |
783 | ||
784 | default: | |
785 | { | |
786 | const unsigned int lsi = this->local_sym_index_; | |
787 | if (!this->is_section_symbol_) | |
788 | this->u1_.relobj->set_needs_output_dynsym_entry(lsi); | |
789 | else | |
ef9beddf | 790 | this->u1_.relobj->output_section(lsi)->set_needs_dynsym_index(); |
dceae3c1 ILT |
791 | } |
792 | break; | |
793 | } | |
7bf1f802 ILT |
794 | } |
795 | ||
c06b7b0b ILT |
796 | // Get the symbol index of a relocation. |
797 | ||
798 | template<bool dynamic, int size, bool big_endian> | |
799 | unsigned int | |
800 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_symbol_index() | |
801 | const | |
802 | { | |
803 | unsigned int index; | |
804 | switch (this->local_sym_index_) | |
805 | { | |
806 | case INVALID_CODE: | |
a3ad94ed | 807 | gold_unreachable(); |
c06b7b0b ILT |
808 | |
809 | case GSYM_CODE: | |
5a6f7e2d | 810 | if (this->u1_.gsym == NULL) |
c06b7b0b ILT |
811 | index = 0; |
812 | else if (dynamic) | |
5a6f7e2d | 813 | index = this->u1_.gsym->dynsym_index(); |
c06b7b0b | 814 | else |
5a6f7e2d | 815 | index = this->u1_.gsym->symtab_index(); |
c06b7b0b ILT |
816 | break; |
817 | ||
818 | case SECTION_CODE: | |
819 | if (dynamic) | |
5a6f7e2d | 820 | index = this->u1_.os->dynsym_index(); |
c06b7b0b | 821 | else |
5a6f7e2d | 822 | index = this->u1_.os->symtab_index(); |
c06b7b0b ILT |
823 | break; |
824 | ||
436ca963 ILT |
825 | case 0: |
826 | // Relocations without symbols use a symbol index of 0. | |
827 | index = 0; | |
828 | break; | |
829 | ||
c06b7b0b | 830 | default: |
dceae3c1 ILT |
831 | { |
832 | const unsigned int lsi = this->local_sym_index_; | |
833 | if (!this->is_section_symbol_) | |
834 | { | |
835 | if (dynamic) | |
836 | index = this->u1_.relobj->dynsym_index(lsi); | |
837 | else | |
838 | index = this->u1_.relobj->symtab_index(lsi); | |
839 | } | |
840 | else | |
841 | { | |
ef9beddf | 842 | Output_section* os = this->u1_.relobj->output_section(lsi); |
dceae3c1 ILT |
843 | gold_assert(os != NULL); |
844 | if (dynamic) | |
845 | index = os->dynsym_index(); | |
846 | else | |
847 | index = os->symtab_index(); | |
848 | } | |
849 | } | |
c06b7b0b ILT |
850 | break; |
851 | } | |
a3ad94ed | 852 | gold_assert(index != -1U); |
c06b7b0b ILT |
853 | return index; |
854 | } | |
855 | ||
624f8810 ILT |
856 | // For a local section symbol, get the address of the offset ADDEND |
857 | // within the input section. | |
dceae3c1 ILT |
858 | |
859 | template<bool dynamic, int size, bool big_endian> | |
ef9beddf | 860 | typename elfcpp::Elf_types<size>::Elf_Addr |
dceae3c1 | 861 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: |
624f8810 | 862 | local_section_offset(Addend addend) const |
dceae3c1 | 863 | { |
624f8810 ILT |
864 | gold_assert(this->local_sym_index_ != GSYM_CODE |
865 | && this->local_sym_index_ != SECTION_CODE | |
866 | && this->local_sym_index_ != INVALID_CODE | |
867 | && this->is_section_symbol_); | |
dceae3c1 | 868 | const unsigned int lsi = this->local_sym_index_; |
ef9beddf | 869 | Output_section* os = this->u1_.relobj->output_section(lsi); |
624f8810 | 870 | gold_assert(os != NULL); |
ef9beddf | 871 | Address offset = this->u1_.relobj->get_output_section_offset(lsi); |
eff45813 | 872 | if (offset != invalid_address) |
624f8810 ILT |
873 | return offset + addend; |
874 | // This is a merge section. | |
875 | offset = os->output_address(this->u1_.relobj, lsi, addend); | |
eff45813 | 876 | gold_assert(offset != invalid_address); |
dceae3c1 ILT |
877 | return offset; |
878 | } | |
879 | ||
d98bc257 | 880 | // Get the output address of a relocation. |
c06b7b0b ILT |
881 | |
882 | template<bool dynamic, int size, bool big_endian> | |
a984ee1d | 883 | typename elfcpp::Elf_types<size>::Elf_Addr |
d98bc257 | 884 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_address() const |
c06b7b0b | 885 | { |
a3ad94ed | 886 | Address address = this->address_; |
5a6f7e2d ILT |
887 | if (this->shndx_ != INVALID_CODE) |
888 | { | |
ef9beddf | 889 | Output_section* os = this->u2_.relobj->output_section(this->shndx_); |
5a6f7e2d | 890 | gold_assert(os != NULL); |
ef9beddf | 891 | Address off = this->u2_.relobj->get_output_section_offset(this->shndx_); |
eff45813 | 892 | if (off != invalid_address) |
730cdc88 ILT |
893 | address += os->address() + off; |
894 | else | |
895 | { | |
896 | address = os->output_address(this->u2_.relobj, this->shndx_, | |
897 | address); | |
eff45813 | 898 | gold_assert(address != invalid_address); |
730cdc88 | 899 | } |
5a6f7e2d ILT |
900 | } |
901 | else if (this->u2_.od != NULL) | |
902 | address += this->u2_.od->address(); | |
d98bc257 ILT |
903 | return address; |
904 | } | |
905 | ||
906 | // Write out the offset and info fields of a Rel or Rela relocation | |
907 | // entry. | |
908 | ||
909 | template<bool dynamic, int size, bool big_endian> | |
910 | template<typename Write_rel> | |
911 | void | |
912 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write_rel( | |
913 | Write_rel* wr) const | |
914 | { | |
915 | wr->put_r_offset(this->get_address()); | |
e8c846c3 ILT |
916 | unsigned int sym_index = this->is_relative_ ? 0 : this->get_symbol_index(); |
917 | wr->put_r_info(elfcpp::elf_r_info<size>(sym_index, this->type_)); | |
c06b7b0b ILT |
918 | } |
919 | ||
920 | // Write out a Rel relocation. | |
921 | ||
922 | template<bool dynamic, int size, bool big_endian> | |
923 | void | |
924 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write( | |
925 | unsigned char* pov) const | |
926 | { | |
927 | elfcpp::Rel_write<size, big_endian> orel(pov); | |
928 | this->write_rel(&orel); | |
929 | } | |
930 | ||
e8c846c3 ILT |
931 | // Get the value of the symbol referred to by a Rel relocation. |
932 | ||
933 | template<bool dynamic, int size, bool big_endian> | |
934 | typename elfcpp::Elf_types<size>::Elf_Addr | |
d1f003c6 | 935 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::symbol_value( |
624f8810 | 936 | Addend addend) const |
e8c846c3 ILT |
937 | { |
938 | if (this->local_sym_index_ == GSYM_CODE) | |
939 | { | |
940 | const Sized_symbol<size>* sym; | |
941 | sym = static_cast<const Sized_symbol<size>*>(this->u1_.gsym); | |
d1f003c6 | 942 | return sym->value() + addend; |
e8c846c3 ILT |
943 | } |
944 | gold_assert(this->local_sym_index_ != SECTION_CODE | |
d1f003c6 ILT |
945 | && this->local_sym_index_ != INVALID_CODE |
946 | && !this->is_section_symbol_); | |
947 | const unsigned int lsi = this->local_sym_index_; | |
948 | const Symbol_value<size>* symval = this->u1_.relobj->local_symbol(lsi); | |
949 | return symval->value(this->u1_.relobj, addend); | |
e8c846c3 ILT |
950 | } |
951 | ||
d98bc257 ILT |
952 | // Reloc comparison. This function sorts the dynamic relocs for the |
953 | // benefit of the dynamic linker. First we sort all relative relocs | |
954 | // to the front. Among relative relocs, we sort by output address. | |
955 | // Among non-relative relocs, we sort by symbol index, then by output | |
956 | // address. | |
957 | ||
958 | template<bool dynamic, int size, bool big_endian> | |
959 | int | |
960 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: | |
961 | compare(const Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>& r2) | |
962 | const | |
963 | { | |
964 | if (this->is_relative_) | |
965 | { | |
966 | if (!r2.is_relative_) | |
967 | return -1; | |
968 | // Otherwise sort by reloc address below. | |
969 | } | |
970 | else if (r2.is_relative_) | |
971 | return 1; | |
972 | else | |
973 | { | |
974 | unsigned int sym1 = this->get_symbol_index(); | |
975 | unsigned int sym2 = r2.get_symbol_index(); | |
976 | if (sym1 < sym2) | |
977 | return -1; | |
978 | else if (sym1 > sym2) | |
979 | return 1; | |
980 | // Otherwise sort by reloc address. | |
981 | } | |
982 | ||
983 | section_offset_type addr1 = this->get_address(); | |
984 | section_offset_type addr2 = r2.get_address(); | |
985 | if (addr1 < addr2) | |
986 | return -1; | |
987 | else if (addr1 > addr2) | |
988 | return 1; | |
989 | ||
990 | // Final tie breaker, in order to generate the same output on any | |
991 | // host: reloc type. | |
992 | unsigned int type1 = this->type_; | |
993 | unsigned int type2 = r2.type_; | |
994 | if (type1 < type2) | |
995 | return -1; | |
996 | else if (type1 > type2) | |
997 | return 1; | |
998 | ||
999 | // These relocs appear to be exactly the same. | |
1000 | return 0; | |
1001 | } | |
1002 | ||
c06b7b0b ILT |
1003 | // Write out a Rela relocation. |
1004 | ||
1005 | template<bool dynamic, int size, bool big_endian> | |
1006 | void | |
1007 | Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>::write( | |
1008 | unsigned char* pov) const | |
1009 | { | |
1010 | elfcpp::Rela_write<size, big_endian> orel(pov); | |
1011 | this->rel_.write_rel(&orel); | |
e8c846c3 | 1012 | Addend addend = this->addend_; |
dceae3c1 | 1013 | if (this->rel_.is_relative()) |
d1f003c6 ILT |
1014 | addend = this->rel_.symbol_value(addend); |
1015 | else if (this->rel_.is_local_section_symbol()) | |
624f8810 | 1016 | addend = this->rel_.local_section_offset(addend); |
e8c846c3 | 1017 | orel.put_r_addend(addend); |
c06b7b0b ILT |
1018 | } |
1019 | ||
1020 | // Output_data_reloc_base methods. | |
1021 | ||
16649710 ILT |
1022 | // Adjust the output section. |
1023 | ||
1024 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
1025 | void | |
1026 | Output_data_reloc_base<sh_type, dynamic, size, big_endian> | |
1027 | ::do_adjust_output_section(Output_section* os) | |
1028 | { | |
1029 | if (sh_type == elfcpp::SHT_REL) | |
1030 | os->set_entsize(elfcpp::Elf_sizes<size>::rel_size); | |
1031 | else if (sh_type == elfcpp::SHT_RELA) | |
1032 | os->set_entsize(elfcpp::Elf_sizes<size>::rela_size); | |
1033 | else | |
1034 | gold_unreachable(); | |
1035 | if (dynamic) | |
1036 | os->set_should_link_to_dynsym(); | |
1037 | else | |
1038 | os->set_should_link_to_symtab(); | |
1039 | } | |
1040 | ||
c06b7b0b ILT |
1041 | // Write out relocation data. |
1042 | ||
1043 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
1044 | void | |
1045 | Output_data_reloc_base<sh_type, dynamic, size, big_endian>::do_write( | |
1046 | Output_file* of) | |
1047 | { | |
1048 | const off_t off = this->offset(); | |
1049 | const off_t oview_size = this->data_size(); | |
1050 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
1051 | ||
d98bc257 ILT |
1052 | if (this->sort_relocs_) |
1053 | { | |
1054 | gold_assert(dynamic); | |
1055 | std::sort(this->relocs_.begin(), this->relocs_.end(), | |
1056 | Sort_relocs_comparison()); | |
1057 | } | |
1058 | ||
c06b7b0b ILT |
1059 | unsigned char* pov = oview; |
1060 | for (typename Relocs::const_iterator p = this->relocs_.begin(); | |
1061 | p != this->relocs_.end(); | |
1062 | ++p) | |
1063 | { | |
1064 | p->write(pov); | |
1065 | pov += reloc_size; | |
1066 | } | |
1067 | ||
a3ad94ed | 1068 | gold_assert(pov - oview == oview_size); |
c06b7b0b ILT |
1069 | |
1070 | of->write_output_view(off, oview_size, oview); | |
1071 | ||
1072 | // We no longer need the relocation entries. | |
1073 | this->relocs_.clear(); | |
1074 | } | |
1075 | ||
6a74a719 ILT |
1076 | // Class Output_relocatable_relocs. |
1077 | ||
1078 | template<int sh_type, int size, bool big_endian> | |
1079 | void | |
1080 | Output_relocatable_relocs<sh_type, size, big_endian>::set_final_data_size() | |
1081 | { | |
1082 | this->set_data_size(this->rr_->output_reloc_count() | |
1083 | * Reloc_types<sh_type, size, big_endian>::reloc_size); | |
1084 | } | |
1085 | ||
1086 | // class Output_data_group. | |
1087 | ||
1088 | template<int size, bool big_endian> | |
1089 | Output_data_group<size, big_endian>::Output_data_group( | |
1090 | Sized_relobj<size, big_endian>* relobj, | |
1091 | section_size_type entry_count, | |
8825ac63 ILT |
1092 | elfcpp::Elf_Word flags, |
1093 | std::vector<unsigned int>* input_shndxes) | |
20e6d0d6 | 1094 | : Output_section_data(entry_count * 4, 4, false), |
8825ac63 ILT |
1095 | relobj_(relobj), |
1096 | flags_(flags) | |
6a74a719 | 1097 | { |
8825ac63 | 1098 | this->input_shndxes_.swap(*input_shndxes); |
6a74a719 ILT |
1099 | } |
1100 | ||
1101 | // Write out the section group, which means translating the section | |
1102 | // indexes to apply to the output file. | |
1103 | ||
1104 | template<int size, bool big_endian> | |
1105 | void | |
1106 | Output_data_group<size, big_endian>::do_write(Output_file* of) | |
1107 | { | |
1108 | const off_t off = this->offset(); | |
1109 | const section_size_type oview_size = | |
1110 | convert_to_section_size_type(this->data_size()); | |
1111 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
1112 | ||
1113 | elfcpp::Elf_Word* contents = reinterpret_cast<elfcpp::Elf_Word*>(oview); | |
1114 | elfcpp::Swap<32, big_endian>::writeval(contents, this->flags_); | |
1115 | ++contents; | |
1116 | ||
1117 | for (std::vector<unsigned int>::const_iterator p = | |
8825ac63 ILT |
1118 | this->input_shndxes_.begin(); |
1119 | p != this->input_shndxes_.end(); | |
6a74a719 ILT |
1120 | ++p, ++contents) |
1121 | { | |
ef9beddf | 1122 | Output_section* os = this->relobj_->output_section(*p); |
6a74a719 ILT |
1123 | |
1124 | unsigned int output_shndx; | |
1125 | if (os != NULL) | |
1126 | output_shndx = os->out_shndx(); | |
1127 | else | |
1128 | { | |
1129 | this->relobj_->error(_("section group retained but " | |
1130 | "group element discarded")); | |
1131 | output_shndx = 0; | |
1132 | } | |
1133 | ||
1134 | elfcpp::Swap<32, big_endian>::writeval(contents, output_shndx); | |
1135 | } | |
1136 | ||
1137 | size_t wrote = reinterpret_cast<unsigned char*>(contents) - oview; | |
1138 | gold_assert(wrote == oview_size); | |
1139 | ||
1140 | of->write_output_view(off, oview_size, oview); | |
1141 | ||
1142 | // We no longer need this information. | |
8825ac63 | 1143 | this->input_shndxes_.clear(); |
6a74a719 ILT |
1144 | } |
1145 | ||
dbe717ef | 1146 | // Output_data_got::Got_entry methods. |
ead1e424 ILT |
1147 | |
1148 | // Write out the entry. | |
1149 | ||
1150 | template<int size, bool big_endian> | |
1151 | void | |
7e1edb90 | 1152 | Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const |
ead1e424 ILT |
1153 | { |
1154 | Valtype val = 0; | |
1155 | ||
1156 | switch (this->local_sym_index_) | |
1157 | { | |
1158 | case GSYM_CODE: | |
1159 | { | |
e8c846c3 ILT |
1160 | // If the symbol is resolved locally, we need to write out the |
1161 | // link-time value, which will be relocated dynamically by a | |
1162 | // RELATIVE relocation. | |
ead1e424 | 1163 | Symbol* gsym = this->u_.gsym; |
e8c846c3 ILT |
1164 | Sized_symbol<size>* sgsym; |
1165 | // This cast is a bit ugly. We don't want to put a | |
1166 | // virtual method in Symbol, because we want Symbol to be | |
1167 | // as small as possible. | |
1168 | sgsym = static_cast<Sized_symbol<size>*>(gsym); | |
1169 | val = sgsym->value(); | |
ead1e424 ILT |
1170 | } |
1171 | break; | |
1172 | ||
1173 | case CONSTANT_CODE: | |
1174 | val = this->u_.constant; | |
1175 | break; | |
1176 | ||
1177 | default: | |
d1f003c6 ILT |
1178 | { |
1179 | const unsigned int lsi = this->local_sym_index_; | |
1180 | const Symbol_value<size>* symval = this->u_.object->local_symbol(lsi); | |
1181 | val = symval->value(this->u_.object, 0); | |
1182 | } | |
e727fa71 | 1183 | break; |
ead1e424 ILT |
1184 | } |
1185 | ||
a3ad94ed | 1186 | elfcpp::Swap<size, big_endian>::writeval(pov, val); |
ead1e424 ILT |
1187 | } |
1188 | ||
dbe717ef | 1189 | // Output_data_got methods. |
ead1e424 | 1190 | |
dbe717ef ILT |
1191 | // Add an entry for a global symbol to the GOT. This returns true if |
1192 | // this is a new GOT entry, false if the symbol already had a GOT | |
1193 | // entry. | |
1194 | ||
1195 | template<int size, bool big_endian> | |
1196 | bool | |
0a65a3a7 CC |
1197 | Output_data_got<size, big_endian>::add_global( |
1198 | Symbol* gsym, | |
1199 | unsigned int got_type) | |
ead1e424 | 1200 | { |
0a65a3a7 | 1201 | if (gsym->has_got_offset(got_type)) |
dbe717ef | 1202 | return false; |
ead1e424 | 1203 | |
dbe717ef ILT |
1204 | this->entries_.push_back(Got_entry(gsym)); |
1205 | this->set_got_size(); | |
0a65a3a7 | 1206 | gsym->set_got_offset(got_type, this->last_got_offset()); |
dbe717ef ILT |
1207 | return true; |
1208 | } | |
ead1e424 | 1209 | |
7bf1f802 ILT |
1210 | // Add an entry for a global symbol to the GOT, and add a dynamic |
1211 | // relocation of type R_TYPE for the GOT entry. | |
1212 | template<int size, bool big_endian> | |
1213 | void | |
1214 | Output_data_got<size, big_endian>::add_global_with_rel( | |
1215 | Symbol* gsym, | |
0a65a3a7 | 1216 | unsigned int got_type, |
7bf1f802 ILT |
1217 | Rel_dyn* rel_dyn, |
1218 | unsigned int r_type) | |
1219 | { | |
0a65a3a7 | 1220 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1221 | return; |
1222 | ||
1223 | this->entries_.push_back(Got_entry()); | |
1224 | this->set_got_size(); | |
1225 | unsigned int got_offset = this->last_got_offset(); | |
0a65a3a7 | 1226 | gsym->set_got_offset(got_type, got_offset); |
7bf1f802 ILT |
1227 | rel_dyn->add_global(gsym, r_type, this, got_offset); |
1228 | } | |
1229 | ||
1230 | template<int size, bool big_endian> | |
1231 | void | |
1232 | Output_data_got<size, big_endian>::add_global_with_rela( | |
1233 | Symbol* gsym, | |
0a65a3a7 | 1234 | unsigned int got_type, |
7bf1f802 ILT |
1235 | Rela_dyn* rela_dyn, |
1236 | unsigned int r_type) | |
1237 | { | |
0a65a3a7 | 1238 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1239 | return; |
1240 | ||
1241 | this->entries_.push_back(Got_entry()); | |
1242 | this->set_got_size(); | |
1243 | unsigned int got_offset = this->last_got_offset(); | |
0a65a3a7 | 1244 | gsym->set_got_offset(got_type, got_offset); |
7bf1f802 ILT |
1245 | rela_dyn->add_global(gsym, r_type, this, got_offset, 0); |
1246 | } | |
1247 | ||
0a65a3a7 CC |
1248 | // Add a pair of entries for a global symbol to the GOT, and add |
1249 | // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. | |
1250 | // If R_TYPE_2 == 0, add the second entry with no relocation. | |
7bf1f802 ILT |
1251 | template<int size, bool big_endian> |
1252 | void | |
0a65a3a7 CC |
1253 | Output_data_got<size, big_endian>::add_global_pair_with_rel( |
1254 | Symbol* gsym, | |
1255 | unsigned int got_type, | |
7bf1f802 | 1256 | Rel_dyn* rel_dyn, |
0a65a3a7 CC |
1257 | unsigned int r_type_1, |
1258 | unsigned int r_type_2) | |
7bf1f802 | 1259 | { |
0a65a3a7 | 1260 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1261 | return; |
1262 | ||
1263 | this->entries_.push_back(Got_entry()); | |
7bf1f802 | 1264 | unsigned int got_offset = this->last_got_offset(); |
0a65a3a7 CC |
1265 | gsym->set_got_offset(got_type, got_offset); |
1266 | rel_dyn->add_global(gsym, r_type_1, this, got_offset); | |
1267 | ||
1268 | this->entries_.push_back(Got_entry()); | |
1269 | if (r_type_2 != 0) | |
1270 | { | |
1271 | got_offset = this->last_got_offset(); | |
1272 | rel_dyn->add_global(gsym, r_type_2, this, got_offset); | |
1273 | } | |
1274 | ||
1275 | this->set_got_size(); | |
7bf1f802 ILT |
1276 | } |
1277 | ||
1278 | template<int size, bool big_endian> | |
1279 | void | |
0a65a3a7 CC |
1280 | Output_data_got<size, big_endian>::add_global_pair_with_rela( |
1281 | Symbol* gsym, | |
1282 | unsigned int got_type, | |
7bf1f802 | 1283 | Rela_dyn* rela_dyn, |
0a65a3a7 CC |
1284 | unsigned int r_type_1, |
1285 | unsigned int r_type_2) | |
7bf1f802 | 1286 | { |
0a65a3a7 | 1287 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1288 | return; |
1289 | ||
1290 | this->entries_.push_back(Got_entry()); | |
7bf1f802 | 1291 | unsigned int got_offset = this->last_got_offset(); |
0a65a3a7 CC |
1292 | gsym->set_got_offset(got_type, got_offset); |
1293 | rela_dyn->add_global(gsym, r_type_1, this, got_offset, 0); | |
1294 | ||
1295 | this->entries_.push_back(Got_entry()); | |
1296 | if (r_type_2 != 0) | |
1297 | { | |
1298 | got_offset = this->last_got_offset(); | |
1299 | rela_dyn->add_global(gsym, r_type_2, this, got_offset, 0); | |
1300 | } | |
1301 | ||
1302 | this->set_got_size(); | |
7bf1f802 ILT |
1303 | } |
1304 | ||
0a65a3a7 CC |
1305 | // Add an entry for a local symbol to the GOT. This returns true if |
1306 | // this is a new GOT entry, false if the symbol already has a GOT | |
1307 | // entry. | |
07f397ab ILT |
1308 | |
1309 | template<int size, bool big_endian> | |
1310 | bool | |
0a65a3a7 CC |
1311 | Output_data_got<size, big_endian>::add_local( |
1312 | Sized_relobj<size, big_endian>* object, | |
1313 | unsigned int symndx, | |
1314 | unsigned int got_type) | |
07f397ab | 1315 | { |
0a65a3a7 | 1316 | if (object->local_has_got_offset(symndx, got_type)) |
07f397ab ILT |
1317 | return false; |
1318 | ||
0a65a3a7 | 1319 | this->entries_.push_back(Got_entry(object, symndx)); |
07f397ab | 1320 | this->set_got_size(); |
0a65a3a7 | 1321 | object->set_local_got_offset(symndx, got_type, this->last_got_offset()); |
07f397ab ILT |
1322 | return true; |
1323 | } | |
1324 | ||
0a65a3a7 CC |
1325 | // Add an entry for a local symbol to the GOT, and add a dynamic |
1326 | // relocation of type R_TYPE for the GOT entry. | |
7bf1f802 ILT |
1327 | template<int size, bool big_endian> |
1328 | void | |
0a65a3a7 CC |
1329 | Output_data_got<size, big_endian>::add_local_with_rel( |
1330 | Sized_relobj<size, big_endian>* object, | |
1331 | unsigned int symndx, | |
1332 | unsigned int got_type, | |
7bf1f802 ILT |
1333 | Rel_dyn* rel_dyn, |
1334 | unsigned int r_type) | |
1335 | { | |
0a65a3a7 | 1336 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1337 | return; |
1338 | ||
1339 | this->entries_.push_back(Got_entry()); | |
1340 | this->set_got_size(); | |
1341 | unsigned int got_offset = this->last_got_offset(); | |
0a65a3a7 CC |
1342 | object->set_local_got_offset(symndx, got_type, got_offset); |
1343 | rel_dyn->add_local(object, symndx, r_type, this, got_offset); | |
7bf1f802 ILT |
1344 | } |
1345 | ||
1346 | template<int size, bool big_endian> | |
1347 | void | |
0a65a3a7 CC |
1348 | Output_data_got<size, big_endian>::add_local_with_rela( |
1349 | Sized_relobj<size, big_endian>* object, | |
1350 | unsigned int symndx, | |
1351 | unsigned int got_type, | |
7bf1f802 ILT |
1352 | Rela_dyn* rela_dyn, |
1353 | unsigned int r_type) | |
1354 | { | |
0a65a3a7 | 1355 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1356 | return; |
1357 | ||
1358 | this->entries_.push_back(Got_entry()); | |
1359 | this->set_got_size(); | |
1360 | unsigned int got_offset = this->last_got_offset(); | |
0a65a3a7 CC |
1361 | object->set_local_got_offset(symndx, got_type, got_offset); |
1362 | rela_dyn->add_local(object, symndx, r_type, this, got_offset, 0); | |
07f397ab ILT |
1363 | } |
1364 | ||
0a65a3a7 CC |
1365 | // Add a pair of entries for a local symbol to the GOT, and add |
1366 | // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. | |
1367 | // If R_TYPE_2 == 0, add the second entry with no relocation. | |
7bf1f802 ILT |
1368 | template<int size, bool big_endian> |
1369 | void | |
0a65a3a7 | 1370 | Output_data_got<size, big_endian>::add_local_pair_with_rel( |
7bf1f802 ILT |
1371 | Sized_relobj<size, big_endian>* object, |
1372 | unsigned int symndx, | |
1373 | unsigned int shndx, | |
0a65a3a7 | 1374 | unsigned int got_type, |
7bf1f802 | 1375 | Rel_dyn* rel_dyn, |
0a65a3a7 CC |
1376 | unsigned int r_type_1, |
1377 | unsigned int r_type_2) | |
7bf1f802 | 1378 | { |
0a65a3a7 | 1379 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1380 | return; |
1381 | ||
1382 | this->entries_.push_back(Got_entry()); | |
1383 | unsigned int got_offset = this->last_got_offset(); | |
0a65a3a7 | 1384 | object->set_local_got_offset(symndx, got_type, got_offset); |
ef9beddf | 1385 | Output_section* os = object->output_section(shndx); |
0a65a3a7 | 1386 | rel_dyn->add_output_section(os, r_type_1, this, got_offset); |
7bf1f802 | 1387 | |
0a65a3a7 CC |
1388 | this->entries_.push_back(Got_entry(object, symndx)); |
1389 | if (r_type_2 != 0) | |
1390 | { | |
1391 | got_offset = this->last_got_offset(); | |
1392 | rel_dyn->add_output_section(os, r_type_2, this, got_offset); | |
1393 | } | |
7bf1f802 ILT |
1394 | |
1395 | this->set_got_size(); | |
1396 | } | |
1397 | ||
1398 | template<int size, bool big_endian> | |
1399 | void | |
0a65a3a7 | 1400 | Output_data_got<size, big_endian>::add_local_pair_with_rela( |
7bf1f802 ILT |
1401 | Sized_relobj<size, big_endian>* object, |
1402 | unsigned int symndx, | |
1403 | unsigned int shndx, | |
0a65a3a7 | 1404 | unsigned int got_type, |
7bf1f802 | 1405 | Rela_dyn* rela_dyn, |
0a65a3a7 CC |
1406 | unsigned int r_type_1, |
1407 | unsigned int r_type_2) | |
7bf1f802 | 1408 | { |
0a65a3a7 | 1409 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1410 | return; |
1411 | ||
1412 | this->entries_.push_back(Got_entry()); | |
1413 | unsigned int got_offset = this->last_got_offset(); | |
0a65a3a7 | 1414 | object->set_local_got_offset(symndx, got_type, got_offset); |
ef9beddf | 1415 | Output_section* os = object->output_section(shndx); |
0a65a3a7 | 1416 | rela_dyn->add_output_section(os, r_type_1, this, got_offset, 0); |
7bf1f802 | 1417 | |
0a65a3a7 CC |
1418 | this->entries_.push_back(Got_entry(object, symndx)); |
1419 | if (r_type_2 != 0) | |
1420 | { | |
1421 | got_offset = this->last_got_offset(); | |
1422 | rela_dyn->add_output_section(os, r_type_2, this, got_offset, 0); | |
1423 | } | |
7bf1f802 ILT |
1424 | |
1425 | this->set_got_size(); | |
1426 | } | |
1427 | ||
ead1e424 ILT |
1428 | // Write out the GOT. |
1429 | ||
1430 | template<int size, bool big_endian> | |
1431 | void | |
dbe717ef | 1432 | Output_data_got<size, big_endian>::do_write(Output_file* of) |
ead1e424 ILT |
1433 | { |
1434 | const int add = size / 8; | |
1435 | ||
1436 | const off_t off = this->offset(); | |
c06b7b0b | 1437 | const off_t oview_size = this->data_size(); |
ead1e424 ILT |
1438 | unsigned char* const oview = of->get_output_view(off, oview_size); |
1439 | ||
1440 | unsigned char* pov = oview; | |
1441 | for (typename Got_entries::const_iterator p = this->entries_.begin(); | |
1442 | p != this->entries_.end(); | |
1443 | ++p) | |
1444 | { | |
7e1edb90 | 1445 | p->write(pov); |
ead1e424 ILT |
1446 | pov += add; |
1447 | } | |
1448 | ||
a3ad94ed | 1449 | gold_assert(pov - oview == oview_size); |
c06b7b0b | 1450 | |
ead1e424 ILT |
1451 | of->write_output_view(off, oview_size, oview); |
1452 | ||
1453 | // We no longer need the GOT entries. | |
1454 | this->entries_.clear(); | |
1455 | } | |
1456 | ||
a3ad94ed ILT |
1457 | // Output_data_dynamic::Dynamic_entry methods. |
1458 | ||
1459 | // Write out the entry. | |
1460 | ||
1461 | template<int size, bool big_endian> | |
1462 | void | |
1463 | Output_data_dynamic::Dynamic_entry::write( | |
1464 | unsigned char* pov, | |
7d1a9ebb | 1465 | const Stringpool* pool) const |
a3ad94ed ILT |
1466 | { |
1467 | typename elfcpp::Elf_types<size>::Elf_WXword val; | |
c2b45e22 | 1468 | switch (this->offset_) |
a3ad94ed ILT |
1469 | { |
1470 | case DYNAMIC_NUMBER: | |
1471 | val = this->u_.val; | |
1472 | break; | |
1473 | ||
a3ad94ed | 1474 | case DYNAMIC_SECTION_SIZE: |
16649710 | 1475 | val = this->u_.od->data_size(); |
a3ad94ed ILT |
1476 | break; |
1477 | ||
1478 | case DYNAMIC_SYMBOL: | |
1479 | { | |
16649710 ILT |
1480 | const Sized_symbol<size>* s = |
1481 | static_cast<const Sized_symbol<size>*>(this->u_.sym); | |
a3ad94ed ILT |
1482 | val = s->value(); |
1483 | } | |
1484 | break; | |
1485 | ||
1486 | case DYNAMIC_STRING: | |
1487 | val = pool->get_offset(this->u_.str); | |
1488 | break; | |
1489 | ||
1490 | default: | |
c2b45e22 CC |
1491 | val = this->u_.od->address() + this->offset_; |
1492 | break; | |
a3ad94ed ILT |
1493 | } |
1494 | ||
1495 | elfcpp::Dyn_write<size, big_endian> dw(pov); | |
1496 | dw.put_d_tag(this->tag_); | |
1497 | dw.put_d_val(val); | |
1498 | } | |
1499 | ||
1500 | // Output_data_dynamic methods. | |
1501 | ||
16649710 ILT |
1502 | // Adjust the output section to set the entry size. |
1503 | ||
1504 | void | |
1505 | Output_data_dynamic::do_adjust_output_section(Output_section* os) | |
1506 | { | |
8851ecca | 1507 | if (parameters->target().get_size() == 32) |
16649710 | 1508 | os->set_entsize(elfcpp::Elf_sizes<32>::dyn_size); |
8851ecca | 1509 | else if (parameters->target().get_size() == 64) |
16649710 ILT |
1510 | os->set_entsize(elfcpp::Elf_sizes<64>::dyn_size); |
1511 | else | |
1512 | gold_unreachable(); | |
1513 | } | |
1514 | ||
a3ad94ed ILT |
1515 | // Set the final data size. |
1516 | ||
1517 | void | |
27bc2bce | 1518 | Output_data_dynamic::set_final_data_size() |
a3ad94ed | 1519 | { |
20e6d0d6 DK |
1520 | // Add the terminating entry if it hasn't been added. |
1521 | // Because of relaxation, we can run this multiple times. | |
1522 | if (this->entries_.empty() | |
1523 | || this->entries_.rbegin()->tag() != elfcpp::DT_NULL) | |
1524 | this->add_constant(elfcpp::DT_NULL, 0); | |
a3ad94ed ILT |
1525 | |
1526 | int dyn_size; | |
8851ecca | 1527 | if (parameters->target().get_size() == 32) |
a3ad94ed | 1528 | dyn_size = elfcpp::Elf_sizes<32>::dyn_size; |
8851ecca | 1529 | else if (parameters->target().get_size() == 64) |
a3ad94ed ILT |
1530 | dyn_size = elfcpp::Elf_sizes<64>::dyn_size; |
1531 | else | |
1532 | gold_unreachable(); | |
1533 | this->set_data_size(this->entries_.size() * dyn_size); | |
1534 | } | |
1535 | ||
1536 | // Write out the dynamic entries. | |
1537 | ||
1538 | void | |
1539 | Output_data_dynamic::do_write(Output_file* of) | |
1540 | { | |
8851ecca | 1541 | switch (parameters->size_and_endianness()) |
a3ad94ed | 1542 | { |
9025d29d | 1543 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
1544 | case Parameters::TARGET_32_LITTLE: |
1545 | this->sized_write<32, false>(of); | |
1546 | break; | |
9025d29d | 1547 | #endif |
8851ecca ILT |
1548 | #ifdef HAVE_TARGET_32_BIG |
1549 | case Parameters::TARGET_32_BIG: | |
1550 | this->sized_write<32, true>(of); | |
1551 | break; | |
9025d29d | 1552 | #endif |
9025d29d | 1553 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
1554 | case Parameters::TARGET_64_LITTLE: |
1555 | this->sized_write<64, false>(of); | |
1556 | break; | |
9025d29d | 1557 | #endif |
8851ecca ILT |
1558 | #ifdef HAVE_TARGET_64_BIG |
1559 | case Parameters::TARGET_64_BIG: | |
1560 | this->sized_write<64, true>(of); | |
1561 | break; | |
1562 | #endif | |
1563 | default: | |
1564 | gold_unreachable(); | |
a3ad94ed | 1565 | } |
a3ad94ed ILT |
1566 | } |
1567 | ||
1568 | template<int size, bool big_endian> | |
1569 | void | |
1570 | Output_data_dynamic::sized_write(Output_file* of) | |
1571 | { | |
1572 | const int dyn_size = elfcpp::Elf_sizes<size>::dyn_size; | |
1573 | ||
1574 | const off_t offset = this->offset(); | |
1575 | const off_t oview_size = this->data_size(); | |
1576 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1577 | ||
1578 | unsigned char* pov = oview; | |
1579 | for (typename Dynamic_entries::const_iterator p = this->entries_.begin(); | |
1580 | p != this->entries_.end(); | |
1581 | ++p) | |
1582 | { | |
7d1a9ebb | 1583 | p->write<size, big_endian>(pov, this->pool_); |
a3ad94ed ILT |
1584 | pov += dyn_size; |
1585 | } | |
1586 | ||
1587 | gold_assert(pov - oview == oview_size); | |
1588 | ||
1589 | of->write_output_view(offset, oview_size, oview); | |
1590 | ||
1591 | // We no longer need the dynamic entries. | |
1592 | this->entries_.clear(); | |
1593 | } | |
1594 | ||
d491d34e ILT |
1595 | // Class Output_symtab_xindex. |
1596 | ||
1597 | void | |
1598 | Output_symtab_xindex::do_write(Output_file* of) | |
1599 | { | |
1600 | const off_t offset = this->offset(); | |
1601 | const off_t oview_size = this->data_size(); | |
1602 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1603 | ||
1604 | memset(oview, 0, oview_size); | |
1605 | ||
1606 | if (parameters->target().is_big_endian()) | |
1607 | this->endian_do_write<true>(oview); | |
1608 | else | |
1609 | this->endian_do_write<false>(oview); | |
1610 | ||
1611 | of->write_output_view(offset, oview_size, oview); | |
1612 | ||
1613 | // We no longer need the data. | |
1614 | this->entries_.clear(); | |
1615 | } | |
1616 | ||
1617 | template<bool big_endian> | |
1618 | void | |
1619 | Output_symtab_xindex::endian_do_write(unsigned char* const oview) | |
1620 | { | |
1621 | for (Xindex_entries::const_iterator p = this->entries_.begin(); | |
1622 | p != this->entries_.end(); | |
1623 | ++p) | |
20e6d0d6 DK |
1624 | { |
1625 | unsigned int symndx = p->first; | |
1626 | gold_assert(symndx * 4 < this->data_size()); | |
1627 | elfcpp::Swap<32, big_endian>::writeval(oview + symndx * 4, p->second); | |
1628 | } | |
d491d34e ILT |
1629 | } |
1630 | ||
ead1e424 ILT |
1631 | // Output_section::Input_section methods. |
1632 | ||
1633 | // Return the data size. For an input section we store the size here. | |
1634 | // For an Output_section_data, we have to ask it for the size. | |
1635 | ||
1636 | off_t | |
1637 | Output_section::Input_section::data_size() const | |
1638 | { | |
1639 | if (this->is_input_section()) | |
b8e6aad9 | 1640 | return this->u1_.data_size; |
ead1e424 | 1641 | else |
b8e6aad9 | 1642 | return this->u2_.posd->data_size(); |
ead1e424 ILT |
1643 | } |
1644 | ||
1645 | // Set the address and file offset. | |
1646 | ||
1647 | void | |
96803768 ILT |
1648 | Output_section::Input_section::set_address_and_file_offset( |
1649 | uint64_t address, | |
1650 | off_t file_offset, | |
1651 | off_t section_file_offset) | |
ead1e424 ILT |
1652 | { |
1653 | if (this->is_input_section()) | |
96803768 ILT |
1654 | this->u2_.object->set_section_offset(this->shndx_, |
1655 | file_offset - section_file_offset); | |
ead1e424 | 1656 | else |
96803768 ILT |
1657 | this->u2_.posd->set_address_and_file_offset(address, file_offset); |
1658 | } | |
1659 | ||
a445fddf ILT |
1660 | // Reset the address and file offset. |
1661 | ||
1662 | void | |
1663 | Output_section::Input_section::reset_address_and_file_offset() | |
1664 | { | |
1665 | if (!this->is_input_section()) | |
1666 | this->u2_.posd->reset_address_and_file_offset(); | |
1667 | } | |
1668 | ||
96803768 ILT |
1669 | // Finalize the data size. |
1670 | ||
1671 | void | |
1672 | Output_section::Input_section::finalize_data_size() | |
1673 | { | |
1674 | if (!this->is_input_section()) | |
1675 | this->u2_.posd->finalize_data_size(); | |
b8e6aad9 ILT |
1676 | } |
1677 | ||
1e983657 ILT |
1678 | // Try to turn an input offset into an output offset. We want to |
1679 | // return the output offset relative to the start of this | |
1680 | // Input_section in the output section. | |
b8e6aad9 | 1681 | |
8f00aeb8 | 1682 | inline bool |
8383303e ILT |
1683 | Output_section::Input_section::output_offset( |
1684 | const Relobj* object, | |
1685 | unsigned int shndx, | |
1686 | section_offset_type offset, | |
1687 | section_offset_type *poutput) const | |
b8e6aad9 ILT |
1688 | { |
1689 | if (!this->is_input_section()) | |
730cdc88 | 1690 | return this->u2_.posd->output_offset(object, shndx, offset, poutput); |
b8e6aad9 ILT |
1691 | else |
1692 | { | |
730cdc88 | 1693 | if (this->shndx_ != shndx || this->u2_.object != object) |
b8e6aad9 | 1694 | return false; |
1e983657 | 1695 | *poutput = offset; |
b8e6aad9 ILT |
1696 | return true; |
1697 | } | |
ead1e424 ILT |
1698 | } |
1699 | ||
a9a60db6 ILT |
1700 | // Return whether this is the merge section for the input section |
1701 | // SHNDX in OBJECT. | |
1702 | ||
1703 | inline bool | |
1704 | Output_section::Input_section::is_merge_section_for(const Relobj* object, | |
1705 | unsigned int shndx) const | |
1706 | { | |
1707 | if (this->is_input_section()) | |
1708 | return false; | |
1709 | return this->u2_.posd->is_merge_section_for(object, shndx); | |
1710 | } | |
1711 | ||
ead1e424 ILT |
1712 | // Write out the data. We don't have to do anything for an input |
1713 | // section--they are handled via Object::relocate--but this is where | |
1714 | // we write out the data for an Output_section_data. | |
1715 | ||
1716 | void | |
1717 | Output_section::Input_section::write(Output_file* of) | |
1718 | { | |
1719 | if (!this->is_input_section()) | |
b8e6aad9 | 1720 | this->u2_.posd->write(of); |
ead1e424 ILT |
1721 | } |
1722 | ||
96803768 ILT |
1723 | // Write the data to a buffer. As for write(), we don't have to do |
1724 | // anything for an input section. | |
1725 | ||
1726 | void | |
1727 | Output_section::Input_section::write_to_buffer(unsigned char* buffer) | |
1728 | { | |
1729 | if (!this->is_input_section()) | |
1730 | this->u2_.posd->write_to_buffer(buffer); | |
1731 | } | |
1732 | ||
7d9e3d98 ILT |
1733 | // Print to a map file. |
1734 | ||
1735 | void | |
1736 | Output_section::Input_section::print_to_mapfile(Mapfile* mapfile) const | |
1737 | { | |
1738 | switch (this->shndx_) | |
1739 | { | |
1740 | case OUTPUT_SECTION_CODE: | |
1741 | case MERGE_DATA_SECTION_CODE: | |
1742 | case MERGE_STRING_SECTION_CODE: | |
1743 | this->u2_.posd->print_to_mapfile(mapfile); | |
1744 | break; | |
1745 | ||
20e6d0d6 DK |
1746 | case RELAXED_INPUT_SECTION_CODE: |
1747 | { | |
1748 | Output_relaxed_input_section* relaxed_section = | |
1749 | this->relaxed_input_section(); | |
1750 | mapfile->print_input_section(relaxed_section->relobj(), | |
1751 | relaxed_section->shndx()); | |
1752 | } | |
1753 | break; | |
7d9e3d98 ILT |
1754 | default: |
1755 | mapfile->print_input_section(this->u2_.object, this->shndx_); | |
1756 | break; | |
1757 | } | |
1758 | } | |
1759 | ||
a2fb1b05 ILT |
1760 | // Output_section methods. |
1761 | ||
1762 | // Construct an Output_section. NAME will point into a Stringpool. | |
1763 | ||
96803768 | 1764 | Output_section::Output_section(const char* name, elfcpp::Elf_Word type, |
b8e6aad9 | 1765 | elfcpp::Elf_Xword flags) |
96803768 | 1766 | : name_(name), |
a2fb1b05 ILT |
1767 | addralign_(0), |
1768 | entsize_(0), | |
a445fddf | 1769 | load_address_(0), |
16649710 | 1770 | link_section_(NULL), |
a2fb1b05 | 1771 | link_(0), |
16649710 | 1772 | info_section_(NULL), |
6a74a719 | 1773 | info_symndx_(NULL), |
a2fb1b05 ILT |
1774 | info_(0), |
1775 | type_(type), | |
61ba1cf9 | 1776 | flags_(flags), |
91ea499d | 1777 | out_shndx_(-1U), |
c06b7b0b ILT |
1778 | symtab_index_(0), |
1779 | dynsym_index_(0), | |
ead1e424 ILT |
1780 | input_sections_(), |
1781 | first_input_offset_(0), | |
c51e6221 | 1782 | fills_(), |
96803768 | 1783 | postprocessing_buffer_(NULL), |
a3ad94ed | 1784 | needs_symtab_index_(false), |
16649710 ILT |
1785 | needs_dynsym_index_(false), |
1786 | should_link_to_symtab_(false), | |
730cdc88 | 1787 | should_link_to_dynsym_(false), |
27bc2bce | 1788 | after_input_sections_(false), |
7bf1f802 | 1789 | requires_postprocessing_(false), |
a445fddf ILT |
1790 | found_in_sections_clause_(false), |
1791 | has_load_address_(false), | |
755ab8af | 1792 | info_uses_section_index_(false), |
2fd32231 ILT |
1793 | may_sort_attached_input_sections_(false), |
1794 | must_sort_attached_input_sections_(false), | |
1795 | attached_input_sections_are_sorted_(false), | |
9f1d377b ILT |
1796 | is_relro_(false), |
1797 | is_relro_local_(false), | |
8a5e3e08 ILT |
1798 | is_small_section_(false), |
1799 | is_large_section_(false), | |
20e6d0d6 | 1800 | tls_offset_(0), |
c0a62865 DK |
1801 | checkpoint_(NULL), |
1802 | merge_section_map_(), | |
1803 | merge_section_by_properties_map_(), | |
1804 | relaxed_input_section_map_(), | |
1805 | is_relaxed_input_section_map_valid_(true), | |
1806 | generate_code_fills_at_write_(false) | |
a2fb1b05 | 1807 | { |
27bc2bce ILT |
1808 | // An unallocated section has no address. Forcing this means that |
1809 | // we don't need special treatment for symbols defined in debug | |
1810 | // sections. | |
1811 | if ((flags & elfcpp::SHF_ALLOC) == 0) | |
1812 | this->set_address(0); | |
a2fb1b05 ILT |
1813 | } |
1814 | ||
54dc6425 ILT |
1815 | Output_section::~Output_section() |
1816 | { | |
20e6d0d6 | 1817 | delete this->checkpoint_; |
54dc6425 ILT |
1818 | } |
1819 | ||
16649710 ILT |
1820 | // Set the entry size. |
1821 | ||
1822 | void | |
1823 | Output_section::set_entsize(uint64_t v) | |
1824 | { | |
1825 | if (this->entsize_ == 0) | |
1826 | this->entsize_ = v; | |
1827 | else | |
1828 | gold_assert(this->entsize_ == v); | |
1829 | } | |
1830 | ||
ead1e424 | 1831 | // Add the input section SHNDX, with header SHDR, named SECNAME, in |
730cdc88 ILT |
1832 | // OBJECT, to the Output_section. RELOC_SHNDX is the index of a |
1833 | // relocation section which applies to this section, or 0 if none, or | |
1834 | // -1U if more than one. Return the offset of the input section | |
1835 | // within the output section. Return -1 if the input section will | |
1836 | // receive special handling. In the normal case we don't always keep | |
1837 | // track of input sections for an Output_section. Instead, each | |
1838 | // Object keeps track of the Output_section for each of its input | |
a445fddf ILT |
1839 | // sections. However, if HAVE_SECTIONS_SCRIPT is true, we do keep |
1840 | // track of input sections here; this is used when SECTIONS appears in | |
1841 | // a linker script. | |
a2fb1b05 ILT |
1842 | |
1843 | template<int size, bool big_endian> | |
1844 | off_t | |
730cdc88 ILT |
1845 | Output_section::add_input_section(Sized_relobj<size, big_endian>* object, |
1846 | unsigned int shndx, | |
ead1e424 | 1847 | const char* secname, |
730cdc88 | 1848 | const elfcpp::Shdr<size, big_endian>& shdr, |
a445fddf ILT |
1849 | unsigned int reloc_shndx, |
1850 | bool have_sections_script) | |
a2fb1b05 ILT |
1851 | { |
1852 | elfcpp::Elf_Xword addralign = shdr.get_sh_addralign(); | |
1853 | if ((addralign & (addralign - 1)) != 0) | |
1854 | { | |
75f2446e ILT |
1855 | object->error(_("invalid alignment %lu for section \"%s\""), |
1856 | static_cast<unsigned long>(addralign), secname); | |
1857 | addralign = 1; | |
a2fb1b05 | 1858 | } |
a2fb1b05 ILT |
1859 | |
1860 | if (addralign > this->addralign_) | |
1861 | this->addralign_ = addralign; | |
1862 | ||
44a43cf9 | 1863 | typename elfcpp::Elf_types<size>::Elf_WXword sh_flags = shdr.get_sh_flags(); |
154e0e9a | 1864 | this->update_flags_for_input_section(sh_flags); |
a445fddf | 1865 | |
4f833eee | 1866 | uint64_t entsize = shdr.get_sh_entsize(); |
44a43cf9 ILT |
1867 | |
1868 | // .debug_str is a mergeable string section, but is not always so | |
1869 | // marked by compilers. Mark manually here so we can optimize. | |
1870 | if (strcmp(secname, ".debug_str") == 0) | |
4f833eee ILT |
1871 | { |
1872 | sh_flags |= (elfcpp::SHF_MERGE | elfcpp::SHF_STRINGS); | |
1873 | entsize = 1; | |
1874 | } | |
44a43cf9 | 1875 | |
b8e6aad9 | 1876 | // If this is a SHF_MERGE section, we pass all the input sections to |
730cdc88 | 1877 | // a Output_data_merge. We don't try to handle relocations for such |
e0b64032 ILT |
1878 | // a section. We don't try to handle empty merge sections--they |
1879 | // mess up the mappings, and are useless anyhow. | |
44a43cf9 | 1880 | if ((sh_flags & elfcpp::SHF_MERGE) != 0 |
e0b64032 ILT |
1881 | && reloc_shndx == 0 |
1882 | && shdr.get_sh_size() > 0) | |
b8e6aad9 | 1883 | { |
44a43cf9 | 1884 | if (this->add_merge_input_section(object, shndx, sh_flags, |
96803768 | 1885 | entsize, addralign)) |
b8e6aad9 ILT |
1886 | { |
1887 | // Tell the relocation routines that they need to call the | |
730cdc88 | 1888 | // output_offset method to determine the final address. |
b8e6aad9 ILT |
1889 | return -1; |
1890 | } | |
1891 | } | |
1892 | ||
27bc2bce | 1893 | off_t offset_in_section = this->current_data_size_for_child(); |
c51e6221 ILT |
1894 | off_t aligned_offset_in_section = align_address(offset_in_section, |
1895 | addralign); | |
1896 | ||
c0a62865 DK |
1897 | // Determine if we want to delay code-fill generation until the output |
1898 | // section is written. When the target is relaxing, we want to delay fill | |
1899 | // generating to avoid adjusting them during relaxation. | |
1900 | if (!this->generate_code_fills_at_write_ | |
1901 | && !have_sections_script | |
1902 | && (sh_flags & elfcpp::SHF_EXECINSTR) != 0 | |
1903 | && parameters->target().has_code_fill() | |
1904 | && parameters->target().may_relax()) | |
1905 | { | |
1906 | gold_assert(this->fills_.empty()); | |
1907 | this->generate_code_fills_at_write_ = true; | |
1908 | } | |
1909 | ||
c51e6221 | 1910 | if (aligned_offset_in_section > offset_in_section |
c0a62865 | 1911 | && !this->generate_code_fills_at_write_ |
a445fddf | 1912 | && !have_sections_script |
44a43cf9 | 1913 | && (sh_flags & elfcpp::SHF_EXECINSTR) != 0 |
029ba973 | 1914 | && parameters->target().has_code_fill()) |
c51e6221 ILT |
1915 | { |
1916 | // We need to add some fill data. Using fill_list_ when | |
1917 | // possible is an optimization, since we will often have fill | |
1918 | // sections without input sections. | |
1919 | off_t fill_len = aligned_offset_in_section - offset_in_section; | |
1920 | if (this->input_sections_.empty()) | |
1921 | this->fills_.push_back(Fill(offset_in_section, fill_len)); | |
1922 | else | |
1923 | { | |
029ba973 | 1924 | std::string fill_data(parameters->target().code_fill(fill_len)); |
c51e6221 ILT |
1925 | Output_data_const* odc = new Output_data_const(fill_data, 1); |
1926 | this->input_sections_.push_back(Input_section(odc)); | |
1927 | } | |
1928 | } | |
1929 | ||
27bc2bce ILT |
1930 | this->set_current_data_size_for_child(aligned_offset_in_section |
1931 | + shdr.get_sh_size()); | |
a2fb1b05 | 1932 | |
ead1e424 | 1933 | // We need to keep track of this section if we are already keeping |
2fd32231 ILT |
1934 | // track of sections, or if we are relaxing. Also, if this is a |
1935 | // section which requires sorting, or which may require sorting in | |
20e6d0d6 | 1936 | // the future, we keep track of the sections. |
2fd32231 ILT |
1937 | if (have_sections_script |
1938 | || !this->input_sections_.empty() | |
1939 | || this->may_sort_attached_input_sections() | |
7d9e3d98 | 1940 | || this->must_sort_attached_input_sections() |
20e6d0d6 | 1941 | || parameters->options().user_set_Map() |
029ba973 | 1942 | || parameters->target().may_relax()) |
ead1e424 ILT |
1943 | this->input_sections_.push_back(Input_section(object, shndx, |
1944 | shdr.get_sh_size(), | |
1945 | addralign)); | |
54dc6425 | 1946 | |
c51e6221 | 1947 | return aligned_offset_in_section; |
61ba1cf9 ILT |
1948 | } |
1949 | ||
ead1e424 ILT |
1950 | // Add arbitrary data to an output section. |
1951 | ||
1952 | void | |
1953 | Output_section::add_output_section_data(Output_section_data* posd) | |
1954 | { | |
b8e6aad9 ILT |
1955 | Input_section inp(posd); |
1956 | this->add_output_section_data(&inp); | |
a445fddf ILT |
1957 | |
1958 | if (posd->is_data_size_valid()) | |
1959 | { | |
1960 | off_t offset_in_section = this->current_data_size_for_child(); | |
1961 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
1962 | posd->addralign()); | |
1963 | this->set_current_data_size_for_child(aligned_offset_in_section | |
1964 | + posd->data_size()); | |
1965 | } | |
b8e6aad9 ILT |
1966 | } |
1967 | ||
c0a62865 DK |
1968 | // Add a relaxed input section. |
1969 | ||
1970 | void | |
1971 | Output_section::add_relaxed_input_section(Output_relaxed_input_section* poris) | |
1972 | { | |
1973 | Input_section inp(poris); | |
1974 | this->add_output_section_data(&inp); | |
1975 | if (this->is_relaxed_input_section_map_valid_) | |
1976 | { | |
1977 | Input_section_specifier iss(poris->relobj(), poris->shndx()); | |
1978 | this->relaxed_input_section_map_[iss] = poris; | |
1979 | } | |
1980 | ||
1981 | // For a relaxed section, we use the current data size. Linker scripts | |
1982 | // get all the input sections, including relaxed one from an output | |
1983 | // section and add them back to them same output section to compute the | |
1984 | // output section size. If we do not account for sizes of relaxed input | |
1985 | // sections, an output section would be incorrectly sized. | |
1986 | off_t offset_in_section = this->current_data_size_for_child(); | |
1987 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
1988 | poris->addralign()); | |
1989 | this->set_current_data_size_for_child(aligned_offset_in_section | |
1990 | + poris->current_data_size()); | |
1991 | } | |
1992 | ||
b8e6aad9 | 1993 | // Add arbitrary data to an output section by Input_section. |
c06b7b0b | 1994 | |
b8e6aad9 ILT |
1995 | void |
1996 | Output_section::add_output_section_data(Input_section* inp) | |
1997 | { | |
ead1e424 | 1998 | if (this->input_sections_.empty()) |
27bc2bce | 1999 | this->first_input_offset_ = this->current_data_size_for_child(); |
c06b7b0b | 2000 | |
b8e6aad9 | 2001 | this->input_sections_.push_back(*inp); |
c06b7b0b | 2002 | |
b8e6aad9 | 2003 | uint64_t addralign = inp->addralign(); |
ead1e424 ILT |
2004 | if (addralign > this->addralign_) |
2005 | this->addralign_ = addralign; | |
c06b7b0b | 2006 | |
b8e6aad9 ILT |
2007 | inp->set_output_section(this); |
2008 | } | |
2009 | ||
2010 | // Add a merge section to an output section. | |
2011 | ||
2012 | void | |
2013 | Output_section::add_output_merge_section(Output_section_data* posd, | |
2014 | bool is_string, uint64_t entsize) | |
2015 | { | |
2016 | Input_section inp(posd, is_string, entsize); | |
2017 | this->add_output_section_data(&inp); | |
2018 | } | |
2019 | ||
2020 | // Add an input section to a SHF_MERGE section. | |
2021 | ||
2022 | bool | |
2023 | Output_section::add_merge_input_section(Relobj* object, unsigned int shndx, | |
2024 | uint64_t flags, uint64_t entsize, | |
96803768 | 2025 | uint64_t addralign) |
b8e6aad9 | 2026 | { |
87f95776 ILT |
2027 | bool is_string = (flags & elfcpp::SHF_STRINGS) != 0; |
2028 | ||
2029 | // We only merge strings if the alignment is not more than the | |
2030 | // character size. This could be handled, but it's unusual. | |
2031 | if (is_string && addralign > entsize) | |
b8e6aad9 ILT |
2032 | return false; |
2033 | ||
20e6d0d6 DK |
2034 | // We cannot restore merged input section states. |
2035 | gold_assert(this->checkpoint_ == NULL); | |
2036 | ||
c0a62865 DK |
2037 | // Look up merge sections by required properties. |
2038 | Merge_section_properties msp(is_string, entsize, addralign); | |
2039 | Merge_section_by_properties_map::const_iterator p = | |
2040 | this->merge_section_by_properties_map_.find(msp); | |
2041 | if (p != this->merge_section_by_properties_map_.end()) | |
2042 | { | |
2043 | Output_merge_base* merge_section = p->second; | |
2044 | merge_section->add_input_section(object, shndx); | |
2045 | gold_assert(merge_section->is_string() == is_string | |
2046 | && merge_section->entsize() == entsize | |
2047 | && merge_section->addralign() == addralign); | |
2048 | ||
2049 | // Link input section to found merge section. | |
2050 | Input_section_specifier iss(object, shndx); | |
2051 | this->merge_section_map_[iss] = merge_section; | |
2052 | return true; | |
2053 | } | |
b8e6aad9 ILT |
2054 | |
2055 | // We handle the actual constant merging in Output_merge_data or | |
2056 | // Output_merge_string_data. | |
c0a62865 | 2057 | Output_merge_base* pomb; |
9a0910c3 | 2058 | if (!is_string) |
c0a62865 | 2059 | pomb = new Output_merge_data(entsize, addralign); |
b8e6aad9 ILT |
2060 | else |
2061 | { | |
9a0910c3 ILT |
2062 | switch (entsize) |
2063 | { | |
2064 | case 1: | |
c0a62865 | 2065 | pomb = new Output_merge_string<char>(addralign); |
9a0910c3 ILT |
2066 | break; |
2067 | case 2: | |
c0a62865 | 2068 | pomb = new Output_merge_string<uint16_t>(addralign); |
9a0910c3 ILT |
2069 | break; |
2070 | case 4: | |
c0a62865 | 2071 | pomb = new Output_merge_string<uint32_t>(addralign); |
9a0910c3 ILT |
2072 | break; |
2073 | default: | |
2074 | return false; | |
2075 | } | |
b8e6aad9 ILT |
2076 | } |
2077 | ||
c0a62865 DK |
2078 | // Add new merge section to this output section and link merge section |
2079 | // properties to new merge section in map. | |
2080 | this->add_output_merge_section(pomb, is_string, entsize); | |
2081 | this->merge_section_by_properties_map_[msp] = pomb; | |
2082 | ||
2083 | // Add input section to new merge section and link input section to new | |
2084 | // merge section in map. | |
2085 | pomb->add_input_section(object, shndx); | |
2086 | Input_section_specifier iss(object, shndx); | |
2087 | this->merge_section_map_[iss] = pomb; | |
9a0910c3 | 2088 | |
b8e6aad9 ILT |
2089 | return true; |
2090 | } | |
2091 | ||
c0a62865 DK |
2092 | // Build a relaxation map to speed up relaxation of existing input sections. |
2093 | // Look up to the first LIMIT elements in INPUT_SECTIONS. | |
2094 | ||
20e6d0d6 | 2095 | void |
c0a62865 DK |
2096 | Output_section::build_relaxation_map( |
2097 | const Input_section_list& input_sections, | |
2098 | size_t limit, | |
2099 | Relaxation_map* relaxation_map) const | |
20e6d0d6 | 2100 | { |
c0a62865 DK |
2101 | for (size_t i = 0; i < limit; ++i) |
2102 | { | |
2103 | const Input_section& is(input_sections[i]); | |
2104 | if (is.is_input_section() || is.is_relaxed_input_section()) | |
2105 | { | |
2106 | Input_section_specifier iss(is.relobj(), is.shndx()); | |
2107 | (*relaxation_map)[iss] = i; | |
2108 | } | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | // Convert regular input sections in INPUT_SECTIONS into relaxed input | |
2113 | // sections in RELAXED_SECTIONS. MAP is a prebuilt map from input section | |
2114 | // specifier to indices of INPUT_SECTIONS. | |
20e6d0d6 | 2115 | |
c0a62865 DK |
2116 | void |
2117 | Output_section::convert_input_sections_in_list_to_relaxed_sections( | |
2118 | const std::vector<Output_relaxed_input_section*>& relaxed_sections, | |
2119 | const Relaxation_map& map, | |
2120 | Input_section_list* input_sections) | |
2121 | { | |
2122 | for (size_t i = 0; i < relaxed_sections.size(); ++i) | |
2123 | { | |
2124 | Output_relaxed_input_section* poris = relaxed_sections[i]; | |
2125 | Input_section_specifier iss(poris->relobj(), poris->shndx()); | |
2126 | Relaxation_map::const_iterator p = map.find(iss); | |
2127 | gold_assert(p != map.end()); | |
2128 | gold_assert((*input_sections)[p->second].is_input_section()); | |
2129 | (*input_sections)[p->second] = Input_section(poris); | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | // Convert regular input sections into relaxed input sections. RELAXED_SECTIONS | |
2134 | // is a vector of pointers to Output_relaxed_input_section or its derived | |
2135 | // classes. The relaxed sections must correspond to existing input sections. | |
2136 | ||
2137 | void | |
2138 | Output_section::convert_input_sections_to_relaxed_sections( | |
2139 | const std::vector<Output_relaxed_input_section*>& relaxed_sections) | |
2140 | { | |
029ba973 | 2141 | gold_assert(parameters->target().may_relax()); |
20e6d0d6 | 2142 | |
c0a62865 DK |
2143 | // We want to make sure that restore_states does not undo the effect of |
2144 | // this. If there is no checkpoint active, just search the current | |
2145 | // input section list and replace the sections there. If there is | |
2146 | // a checkpoint, also replace the sections there. | |
2147 | ||
2148 | // By default, we look at the whole list. | |
2149 | size_t limit = this->input_sections_.size(); | |
2150 | ||
2151 | if (this->checkpoint_ != NULL) | |
20e6d0d6 | 2152 | { |
c0a62865 DK |
2153 | // Replace input sections with relaxed input section in the saved |
2154 | // copy of the input section list. | |
2155 | if (this->checkpoint_->input_sections_saved()) | |
20e6d0d6 | 2156 | { |
c0a62865 DK |
2157 | Relaxation_map map; |
2158 | this->build_relaxation_map( | |
2159 | *(this->checkpoint_->input_sections()), | |
2160 | this->checkpoint_->input_sections()->size(), | |
2161 | &map); | |
2162 | this->convert_input_sections_in_list_to_relaxed_sections( | |
2163 | relaxed_sections, | |
2164 | map, | |
2165 | this->checkpoint_->input_sections()); | |
2166 | } | |
2167 | else | |
2168 | { | |
2169 | // We have not copied the input section list yet. Instead, just | |
2170 | // look at the portion that would be saved. | |
2171 | limit = this->checkpoint_->input_sections_size(); | |
20e6d0d6 | 2172 | } |
20e6d0d6 | 2173 | } |
c0a62865 DK |
2174 | |
2175 | // Convert input sections in input_section_list. | |
2176 | Relaxation_map map; | |
2177 | this->build_relaxation_map(this->input_sections_, limit, &map); | |
2178 | this->convert_input_sections_in_list_to_relaxed_sections( | |
2179 | relaxed_sections, | |
2180 | map, | |
2181 | &this->input_sections_); | |
20e6d0d6 DK |
2182 | } |
2183 | ||
9c547ec3 ILT |
2184 | // Update the output section flags based on input section flags. |
2185 | ||
2186 | void | |
2187 | Output_section::update_flags_for_input_section(elfcpp::Elf_Xword flags) | |
2188 | { | |
2189 | // If we created the section with SHF_ALLOC clear, we set the | |
2190 | // address. If we are now setting the SHF_ALLOC flag, we need to | |
2191 | // undo that. | |
2192 | if ((this->flags_ & elfcpp::SHF_ALLOC) == 0 | |
2193 | && (flags & elfcpp::SHF_ALLOC) != 0) | |
2194 | this->mark_address_invalid(); | |
2195 | ||
2196 | this->flags_ |= (flags | |
2197 | & (elfcpp::SHF_WRITE | |
2198 | | elfcpp::SHF_ALLOC | |
2199 | | elfcpp::SHF_EXECINSTR)); | |
2200 | } | |
2201 | ||
c0a62865 DK |
2202 | // Find the merge section into which an input section with index SHNDX in |
2203 | // OBJECT has been added. Return NULL if none found. | |
2204 | ||
2205 | Output_section_data* | |
2206 | Output_section::find_merge_section(const Relobj* object, | |
2207 | unsigned int shndx) const | |
2208 | { | |
2209 | Input_section_specifier iss(object, shndx); | |
2210 | Output_section_data_by_input_section_map::const_iterator p = | |
2211 | this->merge_section_map_.find(iss); | |
2212 | if (p != this->merge_section_map_.end()) | |
2213 | { | |
2214 | Output_section_data* posd = p->second; | |
2215 | gold_assert(posd->is_merge_section_for(object, shndx)); | |
2216 | return posd; | |
2217 | } | |
2218 | else | |
2219 | return NULL; | |
2220 | } | |
2221 | ||
2222 | // Find an relaxed input section corresponding to an input section | |
2223 | // in OBJECT with index SHNDX. | |
2224 | ||
2225 | const Output_section_data* | |
2226 | Output_section::find_relaxed_input_section(const Relobj* object, | |
2227 | unsigned int shndx) const | |
2228 | { | |
2229 | // Be careful that the map may not be valid due to input section export | |
2230 | // to scripts or a check-point restore. | |
2231 | if (!this->is_relaxed_input_section_map_valid_) | |
2232 | { | |
2233 | // Rebuild the map as needed. | |
2234 | this->relaxed_input_section_map_.clear(); | |
2235 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
2236 | p != this->input_sections_.end(); | |
2237 | ++p) | |
2238 | if (p->is_relaxed_input_section()) | |
2239 | { | |
2240 | Input_section_specifier iss(p->relobj(), p->shndx()); | |
2241 | this->relaxed_input_section_map_[iss] = | |
2242 | p->relaxed_input_section(); | |
2243 | } | |
2244 | this->is_relaxed_input_section_map_valid_ = true; | |
2245 | } | |
2246 | ||
2247 | Input_section_specifier iss(object, shndx); | |
2248 | Output_section_data_by_input_section_map::const_iterator p = | |
2249 | this->relaxed_input_section_map_.find(iss); | |
2250 | if (p != this->relaxed_input_section_map_.end()) | |
2251 | return p->second; | |
2252 | else | |
2253 | return NULL; | |
2254 | } | |
2255 | ||
730cdc88 ILT |
2256 | // Given an address OFFSET relative to the start of input section |
2257 | // SHNDX in OBJECT, return whether this address is being included in | |
2258 | // the final link. This should only be called if SHNDX in OBJECT has | |
2259 | // a special mapping. | |
2260 | ||
2261 | bool | |
2262 | Output_section::is_input_address_mapped(const Relobj* object, | |
2263 | unsigned int shndx, | |
2264 | off_t offset) const | |
2265 | { | |
c0a62865 DK |
2266 | // Look at the Output_section_data_maps first. |
2267 | const Output_section_data* posd = this->find_merge_section(object, shndx); | |
2268 | if (posd == NULL) | |
2269 | posd = this->find_relaxed_input_section(object, shndx); | |
2270 | ||
2271 | if (posd != NULL) | |
2272 | { | |
2273 | section_offset_type output_offset; | |
2274 | bool found = posd->output_offset(object, shndx, offset, &output_offset); | |
2275 | gold_assert(found); | |
2276 | return output_offset != -1; | |
2277 | } | |
2278 | ||
2279 | // Fall back to the slow look-up. | |
730cdc88 ILT |
2280 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); |
2281 | p != this->input_sections_.end(); | |
2282 | ++p) | |
2283 | { | |
8383303e | 2284 | section_offset_type output_offset; |
730cdc88 ILT |
2285 | if (p->output_offset(object, shndx, offset, &output_offset)) |
2286 | return output_offset != -1; | |
2287 | } | |
2288 | ||
2289 | // By default we assume that the address is mapped. This should | |
2290 | // only be called after we have passed all sections to Layout. At | |
2291 | // that point we should know what we are discarding. | |
2292 | return true; | |
2293 | } | |
2294 | ||
2295 | // Given an address OFFSET relative to the start of input section | |
2296 | // SHNDX in object OBJECT, return the output offset relative to the | |
1e983657 ILT |
2297 | // start of the input section in the output section. This should only |
2298 | // be called if SHNDX in OBJECT has a special mapping. | |
730cdc88 | 2299 | |
8383303e | 2300 | section_offset_type |
730cdc88 | 2301 | Output_section::output_offset(const Relobj* object, unsigned int shndx, |
8383303e | 2302 | section_offset_type offset) const |
730cdc88 | 2303 | { |
c0a62865 DK |
2304 | // This can only be called meaningfully when we know the data size |
2305 | // of this. | |
2306 | gold_assert(this->is_data_size_valid()); | |
730cdc88 | 2307 | |
c0a62865 DK |
2308 | // Look at the Output_section_data_maps first. |
2309 | const Output_section_data* posd = this->find_merge_section(object, shndx); | |
2310 | if (posd == NULL) | |
2311 | posd = this->find_relaxed_input_section(object, shndx); | |
2312 | if (posd != NULL) | |
2313 | { | |
2314 | section_offset_type output_offset; | |
2315 | bool found = posd->output_offset(object, shndx, offset, &output_offset); | |
2316 | gold_assert(found); | |
2317 | return output_offset; | |
2318 | } | |
2319 | ||
2320 | // Fall back to the slow look-up. | |
730cdc88 ILT |
2321 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); |
2322 | p != this->input_sections_.end(); | |
2323 | ++p) | |
2324 | { | |
8383303e | 2325 | section_offset_type output_offset; |
730cdc88 ILT |
2326 | if (p->output_offset(object, shndx, offset, &output_offset)) |
2327 | return output_offset; | |
2328 | } | |
2329 | gold_unreachable(); | |
2330 | } | |
2331 | ||
b8e6aad9 ILT |
2332 | // Return the output virtual address of OFFSET relative to the start |
2333 | // of input section SHNDX in object OBJECT. | |
2334 | ||
2335 | uint64_t | |
2336 | Output_section::output_address(const Relobj* object, unsigned int shndx, | |
2337 | off_t offset) const | |
2338 | { | |
2339 | uint64_t addr = this->address() + this->first_input_offset_; | |
c0a62865 DK |
2340 | |
2341 | // Look at the Output_section_data_maps first. | |
2342 | const Output_section_data* posd = this->find_merge_section(object, shndx); | |
2343 | if (posd == NULL) | |
2344 | posd = this->find_relaxed_input_section(object, shndx); | |
2345 | if (posd != NULL && posd->is_address_valid()) | |
2346 | { | |
2347 | section_offset_type output_offset; | |
2348 | bool found = posd->output_offset(object, shndx, offset, &output_offset); | |
2349 | gold_assert(found); | |
2350 | return posd->address() + output_offset; | |
2351 | } | |
2352 | ||
2353 | // Fall back to the slow look-up. | |
b8e6aad9 ILT |
2354 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); |
2355 | p != this->input_sections_.end(); | |
2356 | ++p) | |
2357 | { | |
2358 | addr = align_address(addr, p->addralign()); | |
8383303e | 2359 | section_offset_type output_offset; |
730cdc88 ILT |
2360 | if (p->output_offset(object, shndx, offset, &output_offset)) |
2361 | { | |
2362 | if (output_offset == -1) | |
eff45813 | 2363 | return -1ULL; |
730cdc88 ILT |
2364 | return addr + output_offset; |
2365 | } | |
b8e6aad9 ILT |
2366 | addr += p->data_size(); |
2367 | } | |
2368 | ||
2369 | // If we get here, it means that we don't know the mapping for this | |
2370 | // input section. This might happen in principle if | |
2371 | // add_input_section were called before add_output_section_data. | |
2372 | // But it should never actually happen. | |
2373 | ||
2374 | gold_unreachable(); | |
ead1e424 ILT |
2375 | } |
2376 | ||
e29e076a | 2377 | // Find the output address of the start of the merged section for |
a9a60db6 ILT |
2378 | // input section SHNDX in object OBJECT. |
2379 | ||
e29e076a ILT |
2380 | bool |
2381 | Output_section::find_starting_output_address(const Relobj* object, | |
2382 | unsigned int shndx, | |
2383 | uint64_t* paddr) const | |
a9a60db6 | 2384 | { |
c0a62865 DK |
2385 | // FIXME: This becomes a bottle-neck if we have many relaxed sections. |
2386 | // Looking up the merge section map does not always work as we sometimes | |
2387 | // find a merge section without its address set. | |
a9a60db6 ILT |
2388 | uint64_t addr = this->address() + this->first_input_offset_; |
2389 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
2390 | p != this->input_sections_.end(); | |
2391 | ++p) | |
2392 | { | |
2393 | addr = align_address(addr, p->addralign()); | |
2394 | ||
2395 | // It would be nice if we could use the existing output_offset | |
2396 | // method to get the output offset of input offset 0. | |
2397 | // Unfortunately we don't know for sure that input offset 0 is | |
2398 | // mapped at all. | |
2399 | if (p->is_merge_section_for(object, shndx)) | |
e29e076a ILT |
2400 | { |
2401 | *paddr = addr; | |
2402 | return true; | |
2403 | } | |
a9a60db6 ILT |
2404 | |
2405 | addr += p->data_size(); | |
2406 | } | |
e29e076a ILT |
2407 | |
2408 | // We couldn't find a merge output section for this input section. | |
2409 | return false; | |
a9a60db6 ILT |
2410 | } |
2411 | ||
27bc2bce | 2412 | // Set the data size of an Output_section. This is where we handle |
ead1e424 ILT |
2413 | // setting the addresses of any Output_section_data objects. |
2414 | ||
2415 | void | |
27bc2bce | 2416 | Output_section::set_final_data_size() |
ead1e424 ILT |
2417 | { |
2418 | if (this->input_sections_.empty()) | |
27bc2bce ILT |
2419 | { |
2420 | this->set_data_size(this->current_data_size_for_child()); | |
2421 | return; | |
2422 | } | |
ead1e424 | 2423 | |
2fd32231 ILT |
2424 | if (this->must_sort_attached_input_sections()) |
2425 | this->sort_attached_input_sections(); | |
2426 | ||
27bc2bce ILT |
2427 | uint64_t address = this->address(); |
2428 | off_t startoff = this->offset(); | |
ead1e424 ILT |
2429 | off_t off = startoff + this->first_input_offset_; |
2430 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2431 | p != this->input_sections_.end(); | |
2432 | ++p) | |
2433 | { | |
2434 | off = align_address(off, p->addralign()); | |
96803768 ILT |
2435 | p->set_address_and_file_offset(address + (off - startoff), off, |
2436 | startoff); | |
ead1e424 ILT |
2437 | off += p->data_size(); |
2438 | } | |
2439 | ||
2440 | this->set_data_size(off - startoff); | |
2441 | } | |
9a0910c3 | 2442 | |
a445fddf ILT |
2443 | // Reset the address and file offset. |
2444 | ||
2445 | void | |
2446 | Output_section::do_reset_address_and_file_offset() | |
2447 | { | |
20e6d0d6 DK |
2448 | // An unallocated section has no address. Forcing this means that |
2449 | // we don't need special treatment for symbols defined in debug | |
2450 | // sections. We do the same in the constructor. | |
2451 | if ((this->flags_ & elfcpp::SHF_ALLOC) == 0) | |
2452 | this->set_address(0); | |
2453 | ||
a445fddf ILT |
2454 | for (Input_section_list::iterator p = this->input_sections_.begin(); |
2455 | p != this->input_sections_.end(); | |
2456 | ++p) | |
2457 | p->reset_address_and_file_offset(); | |
2458 | } | |
20e6d0d6 DK |
2459 | |
2460 | // Return true if address and file offset have the values after reset. | |
2461 | ||
2462 | bool | |
2463 | Output_section::do_address_and_file_offset_have_reset_values() const | |
2464 | { | |
2465 | if (this->is_offset_valid()) | |
2466 | return false; | |
2467 | ||
2468 | // An unallocated section has address 0 after its construction or a reset. | |
2469 | if ((this->flags_ & elfcpp::SHF_ALLOC) == 0) | |
2470 | return this->is_address_valid() && this->address() == 0; | |
2471 | else | |
2472 | return !this->is_address_valid(); | |
2473 | } | |
a445fddf | 2474 | |
7bf1f802 ILT |
2475 | // Set the TLS offset. Called only for SHT_TLS sections. |
2476 | ||
2477 | void | |
2478 | Output_section::do_set_tls_offset(uint64_t tls_base) | |
2479 | { | |
2480 | this->tls_offset_ = this->address() - tls_base; | |
2481 | } | |
2482 | ||
2fd32231 ILT |
2483 | // In a few cases we need to sort the input sections attached to an |
2484 | // output section. This is used to implement the type of constructor | |
2485 | // priority ordering implemented by the GNU linker, in which the | |
2486 | // priority becomes part of the section name and the sections are | |
2487 | // sorted by name. We only do this for an output section if we see an | |
2488 | // attached input section matching ".ctor.*", ".dtor.*", | |
2489 | // ".init_array.*" or ".fini_array.*". | |
2490 | ||
2491 | class Output_section::Input_section_sort_entry | |
2492 | { | |
2493 | public: | |
2494 | Input_section_sort_entry() | |
2495 | : input_section_(), index_(-1U), section_has_name_(false), | |
2496 | section_name_() | |
2497 | { } | |
2498 | ||
2499 | Input_section_sort_entry(const Input_section& input_section, | |
2500 | unsigned int index) | |
2501 | : input_section_(input_section), index_(index), | |
20e6d0d6 DK |
2502 | section_has_name_(input_section.is_input_section() |
2503 | || input_section.is_relaxed_input_section()) | |
2fd32231 ILT |
2504 | { |
2505 | if (this->section_has_name_) | |
2506 | { | |
2507 | // This is only called single-threaded from Layout::finalize, | |
2508 | // so it is OK to lock. Unfortunately we have no way to pass | |
2509 | // in a Task token. | |
2510 | const Task* dummy_task = reinterpret_cast<const Task*>(-1); | |
20e6d0d6 DK |
2511 | Object* obj = (input_section.is_input_section() |
2512 | ? input_section.relobj() | |
2513 | : input_section.relaxed_input_section()->relobj()); | |
2fd32231 ILT |
2514 | Task_lock_obj<Object> tl(dummy_task, obj); |
2515 | ||
2516 | // This is a slow operation, which should be cached in | |
2517 | // Layout::layout if this becomes a speed problem. | |
2518 | this->section_name_ = obj->section_name(input_section.shndx()); | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | // Return the Input_section. | |
2523 | const Input_section& | |
2524 | input_section() const | |
2525 | { | |
2526 | gold_assert(this->index_ != -1U); | |
2527 | return this->input_section_; | |
2528 | } | |
2529 | ||
2530 | // The index of this entry in the original list. This is used to | |
2531 | // make the sort stable. | |
2532 | unsigned int | |
2533 | index() const | |
2534 | { | |
2535 | gold_assert(this->index_ != -1U); | |
2536 | return this->index_; | |
2537 | } | |
2538 | ||
2539 | // Whether there is a section name. | |
2540 | bool | |
2541 | section_has_name() const | |
2542 | { return this->section_has_name_; } | |
2543 | ||
2544 | // The section name. | |
2545 | const std::string& | |
2546 | section_name() const | |
2547 | { | |
2548 | gold_assert(this->section_has_name_); | |
2549 | return this->section_name_; | |
2550 | } | |
2551 | ||
ab794b6b ILT |
2552 | // Return true if the section name has a priority. This is assumed |
2553 | // to be true if it has a dot after the initial dot. | |
2fd32231 | 2554 | bool |
ab794b6b | 2555 | has_priority() const |
2fd32231 ILT |
2556 | { |
2557 | gold_assert(this->section_has_name_); | |
ab794b6b | 2558 | return this->section_name_.find('.', 1); |
2fd32231 ILT |
2559 | } |
2560 | ||
ab794b6b ILT |
2561 | // Return true if this an input file whose base name matches |
2562 | // FILE_NAME. The base name must have an extension of ".o", and | |
2563 | // must be exactly FILE_NAME.o or FILE_NAME, one character, ".o". | |
2564 | // This is to match crtbegin.o as well as crtbeginS.o without | |
2565 | // getting confused by other possibilities. Overall matching the | |
2566 | // file name this way is a dreadful hack, but the GNU linker does it | |
2567 | // in order to better support gcc, and we need to be compatible. | |
2fd32231 | 2568 | bool |
ab794b6b | 2569 | match_file_name(const char* match_file_name) const |
2fd32231 | 2570 | { |
2fd32231 ILT |
2571 | const std::string& file_name(this->input_section_.relobj()->name()); |
2572 | const char* base_name = lbasename(file_name.c_str()); | |
2573 | size_t match_len = strlen(match_file_name); | |
2574 | if (strncmp(base_name, match_file_name, match_len) != 0) | |
2575 | return false; | |
2576 | size_t base_len = strlen(base_name); | |
2577 | if (base_len != match_len + 2 && base_len != match_len + 3) | |
2578 | return false; | |
2579 | return memcmp(base_name + base_len - 2, ".o", 2) == 0; | |
2580 | } | |
2581 | ||
2582 | private: | |
2583 | // The Input_section we are sorting. | |
2584 | Input_section input_section_; | |
2585 | // The index of this Input_section in the original list. | |
2586 | unsigned int index_; | |
2587 | // Whether this Input_section has a section name--it won't if this | |
2588 | // is some random Output_section_data. | |
2589 | bool section_has_name_; | |
2590 | // The section name if there is one. | |
2591 | std::string section_name_; | |
2592 | }; | |
2593 | ||
2594 | // Return true if S1 should come before S2 in the output section. | |
2595 | ||
2596 | bool | |
2597 | Output_section::Input_section_sort_compare::operator()( | |
2598 | const Output_section::Input_section_sort_entry& s1, | |
2599 | const Output_section::Input_section_sort_entry& s2) const | |
2600 | { | |
ab794b6b ILT |
2601 | // crtbegin.o must come first. |
2602 | bool s1_begin = s1.match_file_name("crtbegin"); | |
2603 | bool s2_begin = s2.match_file_name("crtbegin"); | |
2fd32231 ILT |
2604 | if (s1_begin || s2_begin) |
2605 | { | |
2606 | if (!s1_begin) | |
2607 | return false; | |
2608 | if (!s2_begin) | |
2609 | return true; | |
2610 | return s1.index() < s2.index(); | |
2611 | } | |
2612 | ||
ab794b6b ILT |
2613 | // crtend.o must come last. |
2614 | bool s1_end = s1.match_file_name("crtend"); | |
2615 | bool s2_end = s2.match_file_name("crtend"); | |
2fd32231 ILT |
2616 | if (s1_end || s2_end) |
2617 | { | |
2618 | if (!s1_end) | |
2619 | return true; | |
2620 | if (!s2_end) | |
2621 | return false; | |
2622 | return s1.index() < s2.index(); | |
2623 | } | |
2624 | ||
ab794b6b ILT |
2625 | // We sort all the sections with no names to the end. |
2626 | if (!s1.section_has_name() || !s2.section_has_name()) | |
2627 | { | |
2628 | if (s1.section_has_name()) | |
2629 | return true; | |
2630 | if (s2.section_has_name()) | |
2631 | return false; | |
2632 | return s1.index() < s2.index(); | |
2633 | } | |
2fd32231 | 2634 | |
ab794b6b ILT |
2635 | // A section with a priority follows a section without a priority. |
2636 | // The GNU linker does this for all but .init_array sections; until | |
2637 | // further notice we'll assume that that is an mistake. | |
2638 | bool s1_has_priority = s1.has_priority(); | |
2639 | bool s2_has_priority = s2.has_priority(); | |
2640 | if (s1_has_priority && !s2_has_priority) | |
2fd32231 | 2641 | return false; |
ab794b6b | 2642 | if (!s1_has_priority && s2_has_priority) |
2fd32231 ILT |
2643 | return true; |
2644 | ||
2645 | // Otherwise we sort by name. | |
2646 | int compare = s1.section_name().compare(s2.section_name()); | |
2647 | if (compare != 0) | |
2648 | return compare < 0; | |
2649 | ||
2650 | // Otherwise we keep the input order. | |
2651 | return s1.index() < s2.index(); | |
2652 | } | |
2653 | ||
2654 | // Sort the input sections attached to an output section. | |
2655 | ||
2656 | void | |
2657 | Output_section::sort_attached_input_sections() | |
2658 | { | |
2659 | if (this->attached_input_sections_are_sorted_) | |
2660 | return; | |
2661 | ||
20e6d0d6 DK |
2662 | if (this->checkpoint_ != NULL |
2663 | && !this->checkpoint_->input_sections_saved()) | |
2664 | this->checkpoint_->save_input_sections(); | |
2665 | ||
2fd32231 ILT |
2666 | // The only thing we know about an input section is the object and |
2667 | // the section index. We need the section name. Recomputing this | |
2668 | // is slow but this is an unusual case. If this becomes a speed | |
2669 | // problem we can cache the names as required in Layout::layout. | |
2670 | ||
2671 | // We start by building a larger vector holding a copy of each | |
2672 | // Input_section, plus its current index in the list and its name. | |
2673 | std::vector<Input_section_sort_entry> sort_list; | |
2674 | ||
2675 | unsigned int i = 0; | |
2676 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2677 | p != this->input_sections_.end(); | |
2678 | ++p, ++i) | |
2679 | sort_list.push_back(Input_section_sort_entry(*p, i)); | |
2680 | ||
2681 | // Sort the input sections. | |
2682 | std::sort(sort_list.begin(), sort_list.end(), Input_section_sort_compare()); | |
2683 | ||
2684 | // Copy the sorted input sections back to our list. | |
2685 | this->input_sections_.clear(); | |
2686 | for (std::vector<Input_section_sort_entry>::iterator p = sort_list.begin(); | |
2687 | p != sort_list.end(); | |
2688 | ++p) | |
2689 | this->input_sections_.push_back(p->input_section()); | |
2690 | ||
2691 | // Remember that we sorted the input sections, since we might get | |
2692 | // called again. | |
2693 | this->attached_input_sections_are_sorted_ = true; | |
2694 | } | |
2695 | ||
61ba1cf9 ILT |
2696 | // Write the section header to *OSHDR. |
2697 | ||
2698 | template<int size, bool big_endian> | |
2699 | void | |
16649710 ILT |
2700 | Output_section::write_header(const Layout* layout, |
2701 | const Stringpool* secnamepool, | |
61ba1cf9 ILT |
2702 | elfcpp::Shdr_write<size, big_endian>* oshdr) const |
2703 | { | |
2704 | oshdr->put_sh_name(secnamepool->get_offset(this->name_)); | |
2705 | oshdr->put_sh_type(this->type_); | |
6a74a719 ILT |
2706 | |
2707 | elfcpp::Elf_Xword flags = this->flags_; | |
755ab8af | 2708 | if (this->info_section_ != NULL && this->info_uses_section_index_) |
6a74a719 ILT |
2709 | flags |= elfcpp::SHF_INFO_LINK; |
2710 | oshdr->put_sh_flags(flags); | |
2711 | ||
61ba1cf9 ILT |
2712 | oshdr->put_sh_addr(this->address()); |
2713 | oshdr->put_sh_offset(this->offset()); | |
2714 | oshdr->put_sh_size(this->data_size()); | |
16649710 ILT |
2715 | if (this->link_section_ != NULL) |
2716 | oshdr->put_sh_link(this->link_section_->out_shndx()); | |
2717 | else if (this->should_link_to_symtab_) | |
2718 | oshdr->put_sh_link(layout->symtab_section()->out_shndx()); | |
2719 | else if (this->should_link_to_dynsym_) | |
2720 | oshdr->put_sh_link(layout->dynsym_section()->out_shndx()); | |
2721 | else | |
2722 | oshdr->put_sh_link(this->link_); | |
755ab8af ILT |
2723 | |
2724 | elfcpp::Elf_Word info; | |
16649710 | 2725 | if (this->info_section_ != NULL) |
755ab8af ILT |
2726 | { |
2727 | if (this->info_uses_section_index_) | |
2728 | info = this->info_section_->out_shndx(); | |
2729 | else | |
2730 | info = this->info_section_->symtab_index(); | |
2731 | } | |
6a74a719 | 2732 | else if (this->info_symndx_ != NULL) |
755ab8af | 2733 | info = this->info_symndx_->symtab_index(); |
16649710 | 2734 | else |
755ab8af ILT |
2735 | info = this->info_; |
2736 | oshdr->put_sh_info(info); | |
2737 | ||
61ba1cf9 ILT |
2738 | oshdr->put_sh_addralign(this->addralign_); |
2739 | oshdr->put_sh_entsize(this->entsize_); | |
a2fb1b05 ILT |
2740 | } |
2741 | ||
ead1e424 ILT |
2742 | // Write out the data. For input sections the data is written out by |
2743 | // Object::relocate, but we have to handle Output_section_data objects | |
2744 | // here. | |
2745 | ||
2746 | void | |
2747 | Output_section::do_write(Output_file* of) | |
2748 | { | |
96803768 ILT |
2749 | gold_assert(!this->requires_postprocessing()); |
2750 | ||
c0a62865 DK |
2751 | // If the target performs relaxation, we delay filler generation until now. |
2752 | gold_assert(!this->generate_code_fills_at_write_ || this->fills_.empty()); | |
2753 | ||
c51e6221 ILT |
2754 | off_t output_section_file_offset = this->offset(); |
2755 | for (Fill_list::iterator p = this->fills_.begin(); | |
2756 | p != this->fills_.end(); | |
2757 | ++p) | |
2758 | { | |
8851ecca | 2759 | std::string fill_data(parameters->target().code_fill(p->length())); |
c51e6221 | 2760 | of->write(output_section_file_offset + p->section_offset(), |
a445fddf | 2761 | fill_data.data(), fill_data.size()); |
c51e6221 ILT |
2762 | } |
2763 | ||
c0a62865 | 2764 | off_t off = this->offset() + this->first_input_offset_; |
ead1e424 ILT |
2765 | for (Input_section_list::iterator p = this->input_sections_.begin(); |
2766 | p != this->input_sections_.end(); | |
2767 | ++p) | |
c0a62865 DK |
2768 | { |
2769 | off_t aligned_off = align_address(off, p->addralign()); | |
2770 | if (this->generate_code_fills_at_write_ && (off != aligned_off)) | |
2771 | { | |
2772 | size_t fill_len = aligned_off - off; | |
2773 | std::string fill_data(parameters->target().code_fill(fill_len)); | |
2774 | of->write(off, fill_data.data(), fill_data.size()); | |
2775 | } | |
2776 | ||
2777 | p->write(of); | |
2778 | off = aligned_off + p->data_size(); | |
2779 | } | |
ead1e424 ILT |
2780 | } |
2781 | ||
96803768 ILT |
2782 | // If a section requires postprocessing, create the buffer to use. |
2783 | ||
2784 | void | |
2785 | Output_section::create_postprocessing_buffer() | |
2786 | { | |
2787 | gold_assert(this->requires_postprocessing()); | |
1bedcac5 ILT |
2788 | |
2789 | if (this->postprocessing_buffer_ != NULL) | |
2790 | return; | |
96803768 ILT |
2791 | |
2792 | if (!this->input_sections_.empty()) | |
2793 | { | |
2794 | off_t off = this->first_input_offset_; | |
2795 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2796 | p != this->input_sections_.end(); | |
2797 | ++p) | |
2798 | { | |
2799 | off = align_address(off, p->addralign()); | |
2800 | p->finalize_data_size(); | |
2801 | off += p->data_size(); | |
2802 | } | |
2803 | this->set_current_data_size_for_child(off); | |
2804 | } | |
2805 | ||
2806 | off_t buffer_size = this->current_data_size_for_child(); | |
2807 | this->postprocessing_buffer_ = new unsigned char[buffer_size]; | |
2808 | } | |
2809 | ||
2810 | // Write all the data of an Output_section into the postprocessing | |
2811 | // buffer. This is used for sections which require postprocessing, | |
2812 | // such as compression. Input sections are handled by | |
2813 | // Object::Relocate. | |
2814 | ||
2815 | void | |
2816 | Output_section::write_to_postprocessing_buffer() | |
2817 | { | |
2818 | gold_assert(this->requires_postprocessing()); | |
2819 | ||
c0a62865 DK |
2820 | // If the target performs relaxation, we delay filler generation until now. |
2821 | gold_assert(!this->generate_code_fills_at_write_ || this->fills_.empty()); | |
2822 | ||
96803768 ILT |
2823 | unsigned char* buffer = this->postprocessing_buffer(); |
2824 | for (Fill_list::iterator p = this->fills_.begin(); | |
2825 | p != this->fills_.end(); | |
2826 | ++p) | |
2827 | { | |
8851ecca | 2828 | std::string fill_data(parameters->target().code_fill(p->length())); |
a445fddf ILT |
2829 | memcpy(buffer + p->section_offset(), fill_data.data(), |
2830 | fill_data.size()); | |
96803768 ILT |
2831 | } |
2832 | ||
2833 | off_t off = this->first_input_offset_; | |
2834 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2835 | p != this->input_sections_.end(); | |
2836 | ++p) | |
2837 | { | |
c0a62865 DK |
2838 | off_t aligned_off = align_address(off, p->addralign()); |
2839 | if (this->generate_code_fills_at_write_ && (off != aligned_off)) | |
2840 | { | |
2841 | size_t fill_len = aligned_off - off; | |
2842 | std::string fill_data(parameters->target().code_fill(fill_len)); | |
2843 | memcpy(buffer + off, fill_data.data(), fill_data.size()); | |
2844 | } | |
2845 | ||
2846 | p->write_to_buffer(buffer + aligned_off); | |
2847 | off = aligned_off + p->data_size(); | |
96803768 ILT |
2848 | } |
2849 | } | |
2850 | ||
a445fddf ILT |
2851 | // Get the input sections for linker script processing. We leave |
2852 | // behind the Output_section_data entries. Note that this may be | |
2853 | // slightly incorrect for merge sections. We will leave them behind, | |
2854 | // but it is possible that the script says that they should follow | |
2855 | // some other input sections, as in: | |
2856 | // .rodata { *(.rodata) *(.rodata.cst*) } | |
2857 | // For that matter, we don't handle this correctly: | |
2858 | // .rodata { foo.o(.rodata.cst*) *(.rodata.cst*) } | |
2859 | // With luck this will never matter. | |
2860 | ||
2861 | uint64_t | |
2862 | Output_section::get_input_sections( | |
2863 | uint64_t address, | |
2864 | const std::string& fill, | |
20e6d0d6 | 2865 | std::list<Simple_input_section>* input_sections) |
a445fddf | 2866 | { |
20e6d0d6 DK |
2867 | if (this->checkpoint_ != NULL |
2868 | && !this->checkpoint_->input_sections_saved()) | |
2869 | this->checkpoint_->save_input_sections(); | |
2870 | ||
c0a62865 DK |
2871 | // Invalidate the relaxed input section map. |
2872 | this->is_relaxed_input_section_map_valid_ = false; | |
2873 | ||
a445fddf ILT |
2874 | uint64_t orig_address = address; |
2875 | ||
2876 | address = align_address(address, this->addralign()); | |
2877 | ||
2878 | Input_section_list remaining; | |
2879 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2880 | p != this->input_sections_.end(); | |
2881 | ++p) | |
2882 | { | |
2883 | if (p->is_input_section()) | |
20e6d0d6 DK |
2884 | input_sections->push_back(Simple_input_section(p->relobj(), |
2885 | p->shndx())); | |
2886 | else if (p->is_relaxed_input_section()) | |
2887 | input_sections->push_back( | |
2888 | Simple_input_section(p->relaxed_input_section())); | |
a445fddf ILT |
2889 | else |
2890 | { | |
2891 | uint64_t aligned_address = align_address(address, p->addralign()); | |
2892 | if (aligned_address != address && !fill.empty()) | |
2893 | { | |
2894 | section_size_type length = | |
2895 | convert_to_section_size_type(aligned_address - address); | |
2896 | std::string this_fill; | |
2897 | this_fill.reserve(length); | |
2898 | while (this_fill.length() + fill.length() <= length) | |
2899 | this_fill += fill; | |
2900 | if (this_fill.length() < length) | |
2901 | this_fill.append(fill, 0, length - this_fill.length()); | |
2902 | ||
2903 | Output_section_data* posd = new Output_data_const(this_fill, 0); | |
2904 | remaining.push_back(Input_section(posd)); | |
2905 | } | |
2906 | address = aligned_address; | |
2907 | ||
2908 | remaining.push_back(*p); | |
2909 | ||
2910 | p->finalize_data_size(); | |
2911 | address += p->data_size(); | |
2912 | } | |
2913 | } | |
2914 | ||
2915 | this->input_sections_.swap(remaining); | |
2916 | this->first_input_offset_ = 0; | |
2917 | ||
2918 | uint64_t data_size = address - orig_address; | |
2919 | this->set_current_data_size_for_child(data_size); | |
2920 | return data_size; | |
2921 | } | |
2922 | ||
2923 | // Add an input section from a script. | |
2924 | ||
2925 | void | |
20e6d0d6 | 2926 | Output_section::add_input_section_for_script(const Simple_input_section& sis, |
a445fddf ILT |
2927 | off_t data_size, |
2928 | uint64_t addralign) | |
2929 | { | |
2930 | if (addralign > this->addralign_) | |
2931 | this->addralign_ = addralign; | |
2932 | ||
2933 | off_t offset_in_section = this->current_data_size_for_child(); | |
2934 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
2935 | addralign); | |
2936 | ||
2937 | this->set_current_data_size_for_child(aligned_offset_in_section | |
2938 | + data_size); | |
2939 | ||
20e6d0d6 DK |
2940 | Input_section is = |
2941 | (sis.is_relaxed_input_section() | |
2942 | ? Input_section(sis.relaxed_input_section()) | |
2943 | : Input_section(sis.relobj(), sis.shndx(), data_size, addralign)); | |
2944 | this->input_sections_.push_back(is); | |
2945 | } | |
2946 | ||
2947 | // | |
2948 | ||
2949 | void | |
2950 | Output_section::save_states() | |
2951 | { | |
2952 | gold_assert(this->checkpoint_ == NULL); | |
2953 | Checkpoint_output_section* checkpoint = | |
2954 | new Checkpoint_output_section(this->addralign_, this->flags_, | |
2955 | this->input_sections_, | |
2956 | this->first_input_offset_, | |
2957 | this->attached_input_sections_are_sorted_); | |
2958 | this->checkpoint_ = checkpoint; | |
2959 | gold_assert(this->fills_.empty()); | |
2960 | } | |
2961 | ||
2962 | void | |
2963 | Output_section::restore_states() | |
2964 | { | |
2965 | gold_assert(this->checkpoint_ != NULL); | |
2966 | Checkpoint_output_section* checkpoint = this->checkpoint_; | |
2967 | ||
2968 | this->addralign_ = checkpoint->addralign(); | |
2969 | this->flags_ = checkpoint->flags(); | |
2970 | this->first_input_offset_ = checkpoint->first_input_offset(); | |
2971 | ||
2972 | if (!checkpoint->input_sections_saved()) | |
2973 | { | |
2974 | // If we have not copied the input sections, just resize it. | |
2975 | size_t old_size = checkpoint->input_sections_size(); | |
2976 | gold_assert(this->input_sections_.size() >= old_size); | |
2977 | this->input_sections_.resize(old_size); | |
2978 | } | |
2979 | else | |
2980 | { | |
2981 | // We need to copy the whole list. This is not efficient for | |
2982 | // extremely large output with hundreads of thousands of input | |
2983 | // objects. We may need to re-think how we should pass sections | |
2984 | // to scripts. | |
c0a62865 | 2985 | this->input_sections_ = *checkpoint->input_sections(); |
20e6d0d6 DK |
2986 | } |
2987 | ||
2988 | this->attached_input_sections_are_sorted_ = | |
2989 | checkpoint->attached_input_sections_are_sorted(); | |
c0a62865 DK |
2990 | |
2991 | // Simply invalidate the relaxed input section map since we do not keep | |
2992 | // track of it. | |
2993 | this->is_relaxed_input_section_map_valid_ = false; | |
a445fddf ILT |
2994 | } |
2995 | ||
7d9e3d98 ILT |
2996 | // Print to the map file. |
2997 | ||
2998 | void | |
2999 | Output_section::do_print_to_mapfile(Mapfile* mapfile) const | |
3000 | { | |
3001 | mapfile->print_output_section(this); | |
3002 | ||
3003 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
3004 | p != this->input_sections_.end(); | |
3005 | ++p) | |
3006 | p->print_to_mapfile(mapfile); | |
3007 | } | |
3008 | ||
38c5e8b4 ILT |
3009 | // Print stats for merge sections to stderr. |
3010 | ||
3011 | void | |
3012 | Output_section::print_merge_stats() | |
3013 | { | |
3014 | Input_section_list::iterator p; | |
3015 | for (p = this->input_sections_.begin(); | |
3016 | p != this->input_sections_.end(); | |
3017 | ++p) | |
3018 | p->print_merge_stats(this->name_); | |
3019 | } | |
3020 | ||
a2fb1b05 ILT |
3021 | // Output segment methods. |
3022 | ||
3023 | Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags) | |
54dc6425 | 3024 | : output_data_(), |
75f65a3e | 3025 | output_bss_(), |
a2fb1b05 ILT |
3026 | vaddr_(0), |
3027 | paddr_(0), | |
3028 | memsz_(0), | |
a445fddf ILT |
3029 | max_align_(0), |
3030 | min_p_align_(0), | |
a2fb1b05 ILT |
3031 | offset_(0), |
3032 | filesz_(0), | |
3033 | type_(type), | |
ead1e424 | 3034 | flags_(flags), |
a445fddf | 3035 | is_max_align_known_(false), |
8a5e3e08 ILT |
3036 | are_addresses_set_(false), |
3037 | is_large_data_segment_(false) | |
a2fb1b05 ILT |
3038 | { |
3039 | } | |
3040 | ||
3041 | // Add an Output_section to an Output_segment. | |
3042 | ||
3043 | void | |
75f65a3e | 3044 | Output_segment::add_output_section(Output_section* os, |
01676dcd | 3045 | elfcpp::Elf_Word seg_flags) |
a2fb1b05 | 3046 | { |
a3ad94ed | 3047 | gold_assert((os->flags() & elfcpp::SHF_ALLOC) != 0); |
a445fddf | 3048 | gold_assert(!this->is_max_align_known_); |
8a5e3e08 | 3049 | gold_assert(os->is_large_data_section() == this->is_large_data_segment()); |
75f65a3e | 3050 | |
ead1e424 | 3051 | // Update the segment flags. |
75f65a3e | 3052 | this->flags_ |= seg_flags; |
75f65a3e ILT |
3053 | |
3054 | Output_segment::Output_data_list* pdl; | |
3055 | if (os->type() == elfcpp::SHT_NOBITS) | |
3056 | pdl = &this->output_bss_; | |
3057 | else | |
3058 | pdl = &this->output_data_; | |
54dc6425 | 3059 | |
a2fb1b05 ILT |
3060 | // So that PT_NOTE segments will work correctly, we need to ensure |
3061 | // that all SHT_NOTE sections are adjacent. This will normally | |
3062 | // happen automatically, because all the SHT_NOTE input sections | |
3063 | // will wind up in the same output section. However, it is possible | |
3064 | // for multiple SHT_NOTE input sections to have different section | |
3065 | // flags, and thus be in different output sections, but for the | |
3066 | // different section flags to map into the same segment flags and | |
3067 | // thus the same output segment. | |
54dc6425 ILT |
3068 | |
3069 | // Note that while there may be many input sections in an output | |
3070 | // section, there are normally only a few output sections in an | |
3071 | // output segment. This loop is expected to be fast. | |
3072 | ||
61ba1cf9 | 3073 | if (os->type() == elfcpp::SHT_NOTE && !pdl->empty()) |
a2fb1b05 | 3074 | { |
a3ad94ed | 3075 | Output_segment::Output_data_list::iterator p = pdl->end(); |
75f65a3e | 3076 | do |
54dc6425 | 3077 | { |
75f65a3e | 3078 | --p; |
54dc6425 ILT |
3079 | if ((*p)->is_section_type(elfcpp::SHT_NOTE)) |
3080 | { | |
3081 | ++p; | |
75f65a3e | 3082 | pdl->insert(p, os); |
54dc6425 ILT |
3083 | return; |
3084 | } | |
3085 | } | |
75f65a3e | 3086 | while (p != pdl->begin()); |
54dc6425 ILT |
3087 | } |
3088 | ||
3089 | // Similarly, so that PT_TLS segments will work, we need to group | |
75f65a3e ILT |
3090 | // SHF_TLS sections. An SHF_TLS/SHT_NOBITS section is a special |
3091 | // case: we group the SHF_TLS/SHT_NOBITS sections right after the | |
3092 | // SHF_TLS/SHT_PROGBITS sections. This lets us set up PT_TLS | |
07f397ab ILT |
3093 | // correctly. SHF_TLS sections get added to both a PT_LOAD segment |
3094 | // and the PT_TLS segment -- we do this grouping only for the | |
3095 | // PT_LOAD segment. | |
3096 | if (this->type_ != elfcpp::PT_TLS | |
2d924fd9 | 3097 | && (os->flags() & elfcpp::SHF_TLS) != 0) |
54dc6425 | 3098 | { |
75f65a3e | 3099 | pdl = &this->output_data_; |
661be1e2 | 3100 | if (!pdl->empty()) |
a2fb1b05 | 3101 | { |
661be1e2 ILT |
3102 | bool nobits = os->type() == elfcpp::SHT_NOBITS; |
3103 | bool sawtls = false; | |
3104 | Output_segment::Output_data_list::iterator p = pdl->end(); | |
3105 | gold_assert(p != pdl->begin()); | |
3106 | do | |
a2fb1b05 | 3107 | { |
661be1e2 ILT |
3108 | --p; |
3109 | bool insert; | |
3110 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
3111 | { | |
3112 | sawtls = true; | |
3113 | // Put a NOBITS section after the first TLS section. | |
3114 | // Put a PROGBITS section after the first | |
3115 | // TLS/PROGBITS section. | |
3116 | insert = nobits || !(*p)->is_section_type(elfcpp::SHT_NOBITS); | |
3117 | } | |
3118 | else | |
3119 | { | |
3120 | // If we've gone past the TLS sections, but we've | |
3121 | // seen a TLS section, then we need to insert this | |
3122 | // section now. | |
3123 | insert = sawtls; | |
3124 | } | |
3125 | ||
3126 | if (insert) | |
3127 | { | |
3128 | ++p; | |
3129 | pdl->insert(p, os); | |
3130 | return; | |
3131 | } | |
a2fb1b05 | 3132 | } |
661be1e2 | 3133 | while (p != pdl->begin()); |
a2fb1b05 | 3134 | } |
ead1e424 | 3135 | |
dbe717ef ILT |
3136 | // There are no TLS sections yet; put this one at the requested |
3137 | // location in the section list. | |
a2fb1b05 ILT |
3138 | } |
3139 | ||
9f1d377b ILT |
3140 | // For the PT_GNU_RELRO segment, we need to group relro sections, |
3141 | // and we need to put them before any non-relro sections. Also, | |
3142 | // relro local sections go before relro non-local sections. | |
3143 | if (parameters->options().relro() && os->is_relro()) | |
3144 | { | |
3145 | gold_assert(pdl == &this->output_data_); | |
3146 | Output_segment::Output_data_list::iterator p; | |
3147 | for (p = pdl->begin(); p != pdl->end(); ++p) | |
3148 | { | |
3149 | if (!(*p)->is_section()) | |
3150 | break; | |
3151 | ||
3152 | Output_section* pos = (*p)->output_section(); | |
3153 | if (!pos->is_relro() | |
3154 | || (os->is_relro_local() && !pos->is_relro_local())) | |
3155 | break; | |
3156 | } | |
3157 | ||
3158 | pdl->insert(p, os); | |
3159 | return; | |
3160 | } | |
3161 | ||
8a5e3e08 ILT |
3162 | // Small data sections go at the end of the list of data sections. |
3163 | // If OS is not small, and there are small sections, we have to | |
3164 | // insert it before the first small section. | |
3165 | if (os->type() != elfcpp::SHT_NOBITS | |
3166 | && !os->is_small_section() | |
3167 | && !pdl->empty() | |
3168 | && pdl->back()->is_section() | |
3169 | && pdl->back()->output_section()->is_small_section()) | |
3170 | { | |
3171 | for (Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3172 | p != pdl->end(); | |
3173 | ++p) | |
3174 | { | |
3175 | if ((*p)->is_section() | |
3176 | && (*p)->output_section()->is_small_section()) | |
3177 | { | |
3178 | pdl->insert(p, os); | |
3179 | return; | |
3180 | } | |
3181 | } | |
3182 | gold_unreachable(); | |
3183 | } | |
3184 | ||
3185 | // A small BSS section goes at the start of the BSS sections, after | |
3186 | // other small BSS sections. | |
3187 | if (os->type() == elfcpp::SHT_NOBITS && os->is_small_section()) | |
3188 | { | |
3189 | for (Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3190 | p != pdl->end(); | |
3191 | ++p) | |
3192 | { | |
3193 | if (!(*p)->is_section() | |
3194 | || !(*p)->output_section()->is_small_section()) | |
3195 | { | |
3196 | pdl->insert(p, os); | |
3197 | return; | |
3198 | } | |
3199 | } | |
3200 | } | |
3201 | ||
3202 | // A large BSS section goes at the end of the BSS sections, which | |
3203 | // means that one that is not large must come before the first large | |
3204 | // one. | |
3205 | if (os->type() == elfcpp::SHT_NOBITS | |
3206 | && !os->is_large_section() | |
3207 | && !pdl->empty() | |
3208 | && pdl->back()->is_section() | |
3209 | && pdl->back()->output_section()->is_large_section()) | |
3210 | { | |
3211 | for (Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3212 | p != pdl->end(); | |
3213 | ++p) | |
3214 | { | |
3215 | if ((*p)->is_section() | |
3216 | && (*p)->output_section()->is_large_section()) | |
3217 | { | |
3218 | pdl->insert(p, os); | |
3219 | return; | |
3220 | } | |
3221 | } | |
3222 | gold_unreachable(); | |
3223 | } | |
3224 | ||
01676dcd | 3225 | pdl->push_back(os); |
75f65a3e ILT |
3226 | } |
3227 | ||
1650c4ff ILT |
3228 | // Remove an Output_section from this segment. It is an error if it |
3229 | // is not present. | |
3230 | ||
3231 | void | |
3232 | Output_segment::remove_output_section(Output_section* os) | |
3233 | { | |
3234 | // We only need this for SHT_PROGBITS. | |
3235 | gold_assert(os->type() == elfcpp::SHT_PROGBITS); | |
3236 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
3237 | p != this->output_data_.end(); | |
3238 | ++p) | |
3239 | { | |
3240 | if (*p == os) | |
3241 | { | |
3242 | this->output_data_.erase(p); | |
3243 | return; | |
3244 | } | |
3245 | } | |
3246 | gold_unreachable(); | |
3247 | } | |
3248 | ||
75f65a3e ILT |
3249 | // Add an Output_data (which is not an Output_section) to the start of |
3250 | // a segment. | |
3251 | ||
3252 | void | |
3253 | Output_segment::add_initial_output_data(Output_data* od) | |
3254 | { | |
a445fddf | 3255 | gold_assert(!this->is_max_align_known_); |
75f65a3e ILT |
3256 | this->output_data_.push_front(od); |
3257 | } | |
3258 | ||
9f1d377b ILT |
3259 | // Return whether the first data section is a relro section. |
3260 | ||
3261 | bool | |
3262 | Output_segment::is_first_section_relro() const | |
3263 | { | |
3264 | return (!this->output_data_.empty() | |
3265 | && this->output_data_.front()->is_section() | |
3266 | && this->output_data_.front()->output_section()->is_relro()); | |
3267 | } | |
3268 | ||
75f65a3e | 3269 | // Return the maximum alignment of the Output_data in Output_segment. |
75f65a3e ILT |
3270 | |
3271 | uint64_t | |
a445fddf | 3272 | Output_segment::maximum_alignment() |
75f65a3e | 3273 | { |
a445fddf | 3274 | if (!this->is_max_align_known_) |
ead1e424 ILT |
3275 | { |
3276 | uint64_t addralign; | |
3277 | ||
a445fddf ILT |
3278 | addralign = Output_segment::maximum_alignment_list(&this->output_data_); |
3279 | if (addralign > this->max_align_) | |
3280 | this->max_align_ = addralign; | |
ead1e424 | 3281 | |
a445fddf ILT |
3282 | addralign = Output_segment::maximum_alignment_list(&this->output_bss_); |
3283 | if (addralign > this->max_align_) | |
3284 | this->max_align_ = addralign; | |
ead1e424 | 3285 | |
9f1d377b ILT |
3286 | // If -z relro is in effect, and the first section in this |
3287 | // segment is a relro section, then the segment must be aligned | |
3288 | // to at least the common page size. This ensures that the | |
3289 | // PT_GNU_RELRO segment will start at a page boundary. | |
2d924fd9 ILT |
3290 | if (this->type_ == elfcpp::PT_LOAD |
3291 | && parameters->options().relro() | |
3292 | && this->is_first_section_relro()) | |
9f1d377b ILT |
3293 | { |
3294 | addralign = parameters->target().common_pagesize(); | |
3295 | if (addralign > this->max_align_) | |
3296 | this->max_align_ = addralign; | |
3297 | } | |
3298 | ||
a445fddf | 3299 | this->is_max_align_known_ = true; |
ead1e424 ILT |
3300 | } |
3301 | ||
a445fddf | 3302 | return this->max_align_; |
75f65a3e ILT |
3303 | } |
3304 | ||
ead1e424 ILT |
3305 | // Return the maximum alignment of a list of Output_data. |
3306 | ||
3307 | uint64_t | |
a445fddf | 3308 | Output_segment::maximum_alignment_list(const Output_data_list* pdl) |
ead1e424 ILT |
3309 | { |
3310 | uint64_t ret = 0; | |
3311 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3312 | p != pdl->end(); | |
3313 | ++p) | |
3314 | { | |
3315 | uint64_t addralign = (*p)->addralign(); | |
3316 | if (addralign > ret) | |
3317 | ret = addralign; | |
3318 | } | |
3319 | return ret; | |
3320 | } | |
3321 | ||
4f4c5f80 ILT |
3322 | // Return the number of dynamic relocs applied to this segment. |
3323 | ||
3324 | unsigned int | |
3325 | Output_segment::dynamic_reloc_count() const | |
3326 | { | |
3327 | return (this->dynamic_reloc_count_list(&this->output_data_) | |
3328 | + this->dynamic_reloc_count_list(&this->output_bss_)); | |
3329 | } | |
3330 | ||
3331 | // Return the number of dynamic relocs applied to an Output_data_list. | |
3332 | ||
3333 | unsigned int | |
3334 | Output_segment::dynamic_reloc_count_list(const Output_data_list* pdl) const | |
3335 | { | |
3336 | unsigned int count = 0; | |
3337 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3338 | p != pdl->end(); | |
3339 | ++p) | |
3340 | count += (*p)->dynamic_reloc_count(); | |
3341 | return count; | |
3342 | } | |
3343 | ||
a445fddf ILT |
3344 | // Set the section addresses for an Output_segment. If RESET is true, |
3345 | // reset the addresses first. ADDR is the address and *POFF is the | |
3346 | // file offset. Set the section indexes starting with *PSHNDX. | |
3347 | // Return the address of the immediately following segment. Update | |
3348 | // *POFF and *PSHNDX. | |
75f65a3e ILT |
3349 | |
3350 | uint64_t | |
96a2b4e4 ILT |
3351 | Output_segment::set_section_addresses(const Layout* layout, bool reset, |
3352 | uint64_t addr, off_t* poff, | |
ead1e424 | 3353 | unsigned int* pshndx) |
75f65a3e | 3354 | { |
a3ad94ed | 3355 | gold_assert(this->type_ == elfcpp::PT_LOAD); |
75f65a3e | 3356 | |
a445fddf ILT |
3357 | if (!reset && this->are_addresses_set_) |
3358 | { | |
3359 | gold_assert(this->paddr_ == addr); | |
3360 | addr = this->vaddr_; | |
3361 | } | |
3362 | else | |
3363 | { | |
3364 | this->vaddr_ = addr; | |
3365 | this->paddr_ = addr; | |
3366 | this->are_addresses_set_ = true; | |
3367 | } | |
75f65a3e | 3368 | |
96a2b4e4 ILT |
3369 | bool in_tls = false; |
3370 | ||
9f1d377b ILT |
3371 | bool in_relro = (parameters->options().relro() |
3372 | && this->is_first_section_relro()); | |
3373 | ||
75f65a3e ILT |
3374 | off_t orig_off = *poff; |
3375 | this->offset_ = orig_off; | |
3376 | ||
96a2b4e4 | 3377 | addr = this->set_section_list_addresses(layout, reset, &this->output_data_, |
9f1d377b ILT |
3378 | addr, poff, pshndx, &in_tls, |
3379 | &in_relro); | |
75f65a3e ILT |
3380 | this->filesz_ = *poff - orig_off; |
3381 | ||
3382 | off_t off = *poff; | |
3383 | ||
96a2b4e4 ILT |
3384 | uint64_t ret = this->set_section_list_addresses(layout, reset, |
3385 | &this->output_bss_, | |
3386 | addr, poff, pshndx, | |
9f1d377b | 3387 | &in_tls, &in_relro); |
96a2b4e4 ILT |
3388 | |
3389 | // If the last section was a TLS section, align upward to the | |
3390 | // alignment of the TLS segment, so that the overall size of the TLS | |
3391 | // segment is aligned. | |
3392 | if (in_tls) | |
3393 | { | |
3394 | uint64_t segment_align = layout->tls_segment()->maximum_alignment(); | |
3395 | *poff = align_address(*poff, segment_align); | |
3396 | } | |
3397 | ||
9f1d377b ILT |
3398 | // If all the sections were relro sections, align upward to the |
3399 | // common page size. | |
3400 | if (in_relro) | |
3401 | { | |
3402 | uint64_t page_align = parameters->target().common_pagesize(); | |
3403 | *poff = align_address(*poff, page_align); | |
3404 | } | |
3405 | ||
75f65a3e ILT |
3406 | this->memsz_ = *poff - orig_off; |
3407 | ||
3408 | // Ignore the file offset adjustments made by the BSS Output_data | |
3409 | // objects. | |
3410 | *poff = off; | |
61ba1cf9 ILT |
3411 | |
3412 | return ret; | |
75f65a3e ILT |
3413 | } |
3414 | ||
b8e6aad9 ILT |
3415 | // Set the addresses and file offsets in a list of Output_data |
3416 | // structures. | |
75f65a3e ILT |
3417 | |
3418 | uint64_t | |
96a2b4e4 ILT |
3419 | Output_segment::set_section_list_addresses(const Layout* layout, bool reset, |
3420 | Output_data_list* pdl, | |
ead1e424 | 3421 | uint64_t addr, off_t* poff, |
96a2b4e4 | 3422 | unsigned int* pshndx, |
9f1d377b | 3423 | bool* in_tls, bool* in_relro) |
75f65a3e | 3424 | { |
ead1e424 | 3425 | off_t startoff = *poff; |
75f65a3e | 3426 | |
ead1e424 | 3427 | off_t off = startoff; |
75f65a3e ILT |
3428 | for (Output_data_list::iterator p = pdl->begin(); |
3429 | p != pdl->end(); | |
3430 | ++p) | |
3431 | { | |
a445fddf ILT |
3432 | if (reset) |
3433 | (*p)->reset_address_and_file_offset(); | |
3434 | ||
3435 | // When using a linker script the section will most likely | |
3436 | // already have an address. | |
3437 | if (!(*p)->is_address_valid()) | |
3802b2dd | 3438 | { |
96a2b4e4 ILT |
3439 | uint64_t align = (*p)->addralign(); |
3440 | ||
3441 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
3442 | { | |
3443 | // Give the first TLS section the alignment of the | |
3444 | // entire TLS segment. Otherwise the TLS segment as a | |
3445 | // whole may be misaligned. | |
3446 | if (!*in_tls) | |
3447 | { | |
3448 | Output_segment* tls_segment = layout->tls_segment(); | |
3449 | gold_assert(tls_segment != NULL); | |
3450 | uint64_t segment_align = tls_segment->maximum_alignment(); | |
3451 | gold_assert(segment_align >= align); | |
3452 | align = segment_align; | |
3453 | ||
3454 | *in_tls = true; | |
3455 | } | |
3456 | } | |
3457 | else | |
3458 | { | |
3459 | // If this is the first section after the TLS segment, | |
3460 | // align it to at least the alignment of the TLS | |
3461 | // segment, so that the size of the overall TLS segment | |
3462 | // is aligned. | |
3463 | if (*in_tls) | |
3464 | { | |
3465 | uint64_t segment_align = | |
3466 | layout->tls_segment()->maximum_alignment(); | |
3467 | if (segment_align > align) | |
3468 | align = segment_align; | |
3469 | ||
3470 | *in_tls = false; | |
3471 | } | |
3472 | } | |
3473 | ||
9f1d377b ILT |
3474 | // If this is a non-relro section after a relro section, |
3475 | // align it to a common page boundary so that the dynamic | |
3476 | // linker has a page to mark as read-only. | |
3477 | if (*in_relro | |
3478 | && (!(*p)->is_section() | |
3479 | || !(*p)->output_section()->is_relro())) | |
3480 | { | |
3481 | uint64_t page_align = parameters->target().common_pagesize(); | |
3482 | if (page_align > align) | |
3483 | align = page_align; | |
3484 | *in_relro = false; | |
3485 | } | |
3486 | ||
96a2b4e4 | 3487 | off = align_address(off, align); |
3802b2dd ILT |
3488 | (*p)->set_address_and_file_offset(addr + (off - startoff), off); |
3489 | } | |
a445fddf ILT |
3490 | else |
3491 | { | |
3492 | // The script may have inserted a skip forward, but it | |
3493 | // better not have moved backward. | |
661be1e2 ILT |
3494 | if ((*p)->address() >= addr + (off - startoff)) |
3495 | off += (*p)->address() - (addr + (off - startoff)); | |
3496 | else | |
3497 | { | |
3498 | if (!layout->script_options()->saw_sections_clause()) | |
3499 | gold_unreachable(); | |
3500 | else | |
3501 | { | |
3502 | Output_section* os = (*p)->output_section(); | |
64b1ae37 DK |
3503 | |
3504 | // Cast to unsigned long long to avoid format warnings. | |
3505 | unsigned long long previous_dot = | |
3506 | static_cast<unsigned long long>(addr + (off - startoff)); | |
3507 | unsigned long long dot = | |
3508 | static_cast<unsigned long long>((*p)->address()); | |
3509 | ||
661be1e2 ILT |
3510 | if (os == NULL) |
3511 | gold_error(_("dot moves backward in linker script " | |
64b1ae37 | 3512 | "from 0x%llx to 0x%llx"), previous_dot, dot); |
661be1e2 ILT |
3513 | else |
3514 | gold_error(_("address of section '%s' moves backward " | |
3515 | "from 0x%llx to 0x%llx"), | |
64b1ae37 | 3516 | os->name(), previous_dot, dot); |
661be1e2 ILT |
3517 | } |
3518 | } | |
a445fddf ILT |
3519 | (*p)->set_file_offset(off); |
3520 | (*p)->finalize_data_size(); | |
3521 | } | |
ead1e424 | 3522 | |
96a2b4e4 ILT |
3523 | // We want to ignore the size of a SHF_TLS or SHT_NOBITS |
3524 | // section. Such a section does not affect the size of a | |
3525 | // PT_LOAD segment. | |
3526 | if (!(*p)->is_section_flag_set(elfcpp::SHF_TLS) | |
ead1e424 ILT |
3527 | || !(*p)->is_section_type(elfcpp::SHT_NOBITS)) |
3528 | off += (*p)->data_size(); | |
75f65a3e | 3529 | |
ead1e424 ILT |
3530 | if ((*p)->is_section()) |
3531 | { | |
3532 | (*p)->set_out_shndx(*pshndx); | |
3533 | ++*pshndx; | |
3534 | } | |
75f65a3e ILT |
3535 | } |
3536 | ||
3537 | *poff = off; | |
ead1e424 | 3538 | return addr + (off - startoff); |
75f65a3e ILT |
3539 | } |
3540 | ||
3541 | // For a non-PT_LOAD segment, set the offset from the sections, if | |
3542 | // any. | |
3543 | ||
3544 | void | |
3545 | Output_segment::set_offset() | |
3546 | { | |
a3ad94ed | 3547 | gold_assert(this->type_ != elfcpp::PT_LOAD); |
75f65a3e | 3548 | |
a445fddf ILT |
3549 | gold_assert(!this->are_addresses_set_); |
3550 | ||
75f65a3e ILT |
3551 | if (this->output_data_.empty() && this->output_bss_.empty()) |
3552 | { | |
3553 | this->vaddr_ = 0; | |
3554 | this->paddr_ = 0; | |
a445fddf | 3555 | this->are_addresses_set_ = true; |
75f65a3e | 3556 | this->memsz_ = 0; |
a445fddf | 3557 | this->min_p_align_ = 0; |
75f65a3e ILT |
3558 | this->offset_ = 0; |
3559 | this->filesz_ = 0; | |
3560 | return; | |
3561 | } | |
3562 | ||
3563 | const Output_data* first; | |
3564 | if (this->output_data_.empty()) | |
3565 | first = this->output_bss_.front(); | |
3566 | else | |
3567 | first = this->output_data_.front(); | |
3568 | this->vaddr_ = first->address(); | |
a445fddf ILT |
3569 | this->paddr_ = (first->has_load_address() |
3570 | ? first->load_address() | |
3571 | : this->vaddr_); | |
3572 | this->are_addresses_set_ = true; | |
75f65a3e ILT |
3573 | this->offset_ = first->offset(); |
3574 | ||
3575 | if (this->output_data_.empty()) | |
3576 | this->filesz_ = 0; | |
3577 | else | |
3578 | { | |
3579 | const Output_data* last_data = this->output_data_.back(); | |
3580 | this->filesz_ = (last_data->address() | |
3581 | + last_data->data_size() | |
3582 | - this->vaddr_); | |
3583 | } | |
3584 | ||
3585 | const Output_data* last; | |
3586 | if (this->output_bss_.empty()) | |
3587 | last = this->output_data_.back(); | |
3588 | else | |
3589 | last = this->output_bss_.back(); | |
3590 | this->memsz_ = (last->address() | |
3591 | + last->data_size() | |
3592 | - this->vaddr_); | |
96a2b4e4 ILT |
3593 | |
3594 | // If this is a TLS segment, align the memory size. The code in | |
3595 | // set_section_list ensures that the section after the TLS segment | |
3596 | // is aligned to give us room. | |
3597 | if (this->type_ == elfcpp::PT_TLS) | |
3598 | { | |
3599 | uint64_t segment_align = this->maximum_alignment(); | |
3600 | gold_assert(this->vaddr_ == align_address(this->vaddr_, segment_align)); | |
3601 | this->memsz_ = align_address(this->memsz_, segment_align); | |
3602 | } | |
9f1d377b ILT |
3603 | |
3604 | // If this is a RELRO segment, align the memory size. The code in | |
3605 | // set_section_list ensures that the section after the RELRO segment | |
3606 | // is aligned to give us room. | |
3607 | if (this->type_ == elfcpp::PT_GNU_RELRO) | |
3608 | { | |
3609 | uint64_t page_align = parameters->target().common_pagesize(); | |
3610 | gold_assert(this->vaddr_ == align_address(this->vaddr_, page_align)); | |
3611 | this->memsz_ = align_address(this->memsz_, page_align); | |
3612 | } | |
75f65a3e ILT |
3613 | } |
3614 | ||
7bf1f802 ILT |
3615 | // Set the TLS offsets of the sections in the PT_TLS segment. |
3616 | ||
3617 | void | |
3618 | Output_segment::set_tls_offsets() | |
3619 | { | |
3620 | gold_assert(this->type_ == elfcpp::PT_TLS); | |
3621 | ||
3622 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
3623 | p != this->output_data_.end(); | |
3624 | ++p) | |
3625 | (*p)->set_tls_offset(this->vaddr_); | |
3626 | ||
3627 | for (Output_data_list::iterator p = this->output_bss_.begin(); | |
3628 | p != this->output_bss_.end(); | |
3629 | ++p) | |
3630 | (*p)->set_tls_offset(this->vaddr_); | |
3631 | } | |
3632 | ||
a445fddf ILT |
3633 | // Return the address of the first section. |
3634 | ||
3635 | uint64_t | |
3636 | Output_segment::first_section_load_address() const | |
3637 | { | |
3638 | for (Output_data_list::const_iterator p = this->output_data_.begin(); | |
3639 | p != this->output_data_.end(); | |
3640 | ++p) | |
3641 | if ((*p)->is_section()) | |
3642 | return (*p)->has_load_address() ? (*p)->load_address() : (*p)->address(); | |
3643 | ||
3644 | for (Output_data_list::const_iterator p = this->output_bss_.begin(); | |
3645 | p != this->output_bss_.end(); | |
3646 | ++p) | |
3647 | if ((*p)->is_section()) | |
3648 | return (*p)->has_load_address() ? (*p)->load_address() : (*p)->address(); | |
3649 | ||
3650 | gold_unreachable(); | |
3651 | } | |
3652 | ||
75f65a3e ILT |
3653 | // Return the number of Output_sections in an Output_segment. |
3654 | ||
3655 | unsigned int | |
3656 | Output_segment::output_section_count() const | |
3657 | { | |
3658 | return (this->output_section_count_list(&this->output_data_) | |
3659 | + this->output_section_count_list(&this->output_bss_)); | |
3660 | } | |
3661 | ||
3662 | // Return the number of Output_sections in an Output_data_list. | |
3663 | ||
3664 | unsigned int | |
3665 | Output_segment::output_section_count_list(const Output_data_list* pdl) const | |
3666 | { | |
3667 | unsigned int count = 0; | |
3668 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3669 | p != pdl->end(); | |
3670 | ++p) | |
3671 | { | |
3672 | if ((*p)->is_section()) | |
3673 | ++count; | |
3674 | } | |
3675 | return count; | |
a2fb1b05 ILT |
3676 | } |
3677 | ||
1c4f3631 ILT |
3678 | // Return the section attached to the list segment with the lowest |
3679 | // load address. This is used when handling a PHDRS clause in a | |
3680 | // linker script. | |
3681 | ||
3682 | Output_section* | |
3683 | Output_segment::section_with_lowest_load_address() const | |
3684 | { | |
3685 | Output_section* found = NULL; | |
3686 | uint64_t found_lma = 0; | |
3687 | this->lowest_load_address_in_list(&this->output_data_, &found, &found_lma); | |
3688 | ||
3689 | Output_section* found_data = found; | |
3690 | this->lowest_load_address_in_list(&this->output_bss_, &found, &found_lma); | |
3691 | if (found != found_data && found_data != NULL) | |
3692 | { | |
3693 | gold_error(_("nobits section %s may not precede progbits section %s " | |
3694 | "in same segment"), | |
3695 | found->name(), found_data->name()); | |
3696 | return NULL; | |
3697 | } | |
3698 | ||
3699 | return found; | |
3700 | } | |
3701 | ||
3702 | // Look through a list for a section with a lower load address. | |
3703 | ||
3704 | void | |
3705 | Output_segment::lowest_load_address_in_list(const Output_data_list* pdl, | |
3706 | Output_section** found, | |
3707 | uint64_t* found_lma) const | |
3708 | { | |
3709 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3710 | p != pdl->end(); | |
3711 | ++p) | |
3712 | { | |
3713 | if (!(*p)->is_section()) | |
3714 | continue; | |
3715 | Output_section* os = static_cast<Output_section*>(*p); | |
3716 | uint64_t lma = (os->has_load_address() | |
3717 | ? os->load_address() | |
3718 | : os->address()); | |
3719 | if (*found == NULL || lma < *found_lma) | |
3720 | { | |
3721 | *found = os; | |
3722 | *found_lma = lma; | |
3723 | } | |
3724 | } | |
3725 | } | |
3726 | ||
61ba1cf9 ILT |
3727 | // Write the segment data into *OPHDR. |
3728 | ||
3729 | template<int size, bool big_endian> | |
3730 | void | |
ead1e424 | 3731 | Output_segment::write_header(elfcpp::Phdr_write<size, big_endian>* ophdr) |
61ba1cf9 ILT |
3732 | { |
3733 | ophdr->put_p_type(this->type_); | |
3734 | ophdr->put_p_offset(this->offset_); | |
3735 | ophdr->put_p_vaddr(this->vaddr_); | |
3736 | ophdr->put_p_paddr(this->paddr_); | |
3737 | ophdr->put_p_filesz(this->filesz_); | |
3738 | ophdr->put_p_memsz(this->memsz_); | |
3739 | ophdr->put_p_flags(this->flags_); | |
a445fddf | 3740 | ophdr->put_p_align(std::max(this->min_p_align_, this->maximum_alignment())); |
61ba1cf9 ILT |
3741 | } |
3742 | ||
3743 | // Write the section headers into V. | |
3744 | ||
3745 | template<int size, bool big_endian> | |
3746 | unsigned char* | |
16649710 ILT |
3747 | Output_segment::write_section_headers(const Layout* layout, |
3748 | const Stringpool* secnamepool, | |
ead1e424 | 3749 | unsigned char* v, |
7d1a9ebb | 3750 | unsigned int *pshndx) const |
5482377d | 3751 | { |
ead1e424 ILT |
3752 | // Every section that is attached to a segment must be attached to a |
3753 | // PT_LOAD segment, so we only write out section headers for PT_LOAD | |
3754 | // segments. | |
3755 | if (this->type_ != elfcpp::PT_LOAD) | |
3756 | return v; | |
3757 | ||
7d1a9ebb ILT |
3758 | v = this->write_section_headers_list<size, big_endian>(layout, secnamepool, |
3759 | &this->output_data_, | |
3760 | v, pshndx); | |
3761 | v = this->write_section_headers_list<size, big_endian>(layout, secnamepool, | |
3762 | &this->output_bss_, | |
3763 | v, pshndx); | |
61ba1cf9 ILT |
3764 | return v; |
3765 | } | |
3766 | ||
3767 | template<int size, bool big_endian> | |
3768 | unsigned char* | |
16649710 ILT |
3769 | Output_segment::write_section_headers_list(const Layout* layout, |
3770 | const Stringpool* secnamepool, | |
61ba1cf9 | 3771 | const Output_data_list* pdl, |
ead1e424 | 3772 | unsigned char* v, |
7d1a9ebb | 3773 | unsigned int* pshndx) const |
61ba1cf9 ILT |
3774 | { |
3775 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
3776 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3777 | p != pdl->end(); | |
3778 | ++p) | |
3779 | { | |
3780 | if ((*p)->is_section()) | |
3781 | { | |
5482377d | 3782 | const Output_section* ps = static_cast<const Output_section*>(*p); |
a3ad94ed | 3783 | gold_assert(*pshndx == ps->out_shndx()); |
61ba1cf9 | 3784 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 3785 | ps->write_header(layout, secnamepool, &oshdr); |
61ba1cf9 | 3786 | v += shdr_size; |
ead1e424 | 3787 | ++*pshndx; |
61ba1cf9 ILT |
3788 | } |
3789 | } | |
3790 | return v; | |
3791 | } | |
3792 | ||
7d9e3d98 ILT |
3793 | // Print the output sections to the map file. |
3794 | ||
3795 | void | |
3796 | Output_segment::print_sections_to_mapfile(Mapfile* mapfile) const | |
3797 | { | |
3798 | if (this->type() != elfcpp::PT_LOAD) | |
3799 | return; | |
3800 | this->print_section_list_to_mapfile(mapfile, &this->output_data_); | |
3801 | this->print_section_list_to_mapfile(mapfile, &this->output_bss_); | |
3802 | } | |
3803 | ||
3804 | // Print an output section list to the map file. | |
3805 | ||
3806 | void | |
3807 | Output_segment::print_section_list_to_mapfile(Mapfile* mapfile, | |
3808 | const Output_data_list* pdl) const | |
3809 | { | |
3810 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3811 | p != pdl->end(); | |
3812 | ++p) | |
3813 | (*p)->print_to_mapfile(mapfile); | |
3814 | } | |
3815 | ||
a2fb1b05 ILT |
3816 | // Output_file methods. |
3817 | ||
14144f39 ILT |
3818 | Output_file::Output_file(const char* name) |
3819 | : name_(name), | |
61ba1cf9 ILT |
3820 | o_(-1), |
3821 | file_size_(0), | |
c420411f | 3822 | base_(NULL), |
516cb3d0 ILT |
3823 | map_is_anonymous_(false), |
3824 | is_temporary_(false) | |
61ba1cf9 ILT |
3825 | { |
3826 | } | |
3827 | ||
404c2abb ILT |
3828 | // Try to open an existing file. Returns false if the file doesn't |
3829 | // exist, has a size of 0 or can't be mmapped. | |
3830 | ||
3831 | bool | |
3832 | Output_file::open_for_modification() | |
3833 | { | |
3834 | // The name "-" means "stdout". | |
3835 | if (strcmp(this->name_, "-") == 0) | |
3836 | return false; | |
3837 | ||
3838 | // Don't bother opening files with a size of zero. | |
3839 | struct stat s; | |
3840 | if (::stat(this->name_, &s) != 0 || s.st_size == 0) | |
3841 | return false; | |
3842 | ||
3843 | int o = open_descriptor(-1, this->name_, O_RDWR, 0); | |
3844 | if (o < 0) | |
3845 | gold_fatal(_("%s: open: %s"), this->name_, strerror(errno)); | |
3846 | this->o_ = o; | |
3847 | this->file_size_ = s.st_size; | |
3848 | ||
3849 | // If the file can't be mmapped, copying the content to an anonymous | |
3850 | // map will probably negate the performance benefits of incremental | |
3851 | // linking. This could be helped by using views and loading only | |
3852 | // the necessary parts, but this is not supported as of now. | |
3853 | if (!this->map_no_anonymous()) | |
3854 | { | |
3855 | release_descriptor(o, true); | |
3856 | this->o_ = -1; | |
3857 | this->file_size_ = 0; | |
3858 | return false; | |
3859 | } | |
3860 | ||
3861 | return true; | |
3862 | } | |
3863 | ||
61ba1cf9 ILT |
3864 | // Open the output file. |
3865 | ||
a2fb1b05 | 3866 | void |
61ba1cf9 | 3867 | Output_file::open(off_t file_size) |
a2fb1b05 | 3868 | { |
61ba1cf9 ILT |
3869 | this->file_size_ = file_size; |
3870 | ||
4e9d8586 ILT |
3871 | // Unlink the file first; otherwise the open() may fail if the file |
3872 | // is busy (e.g. it's an executable that's currently being executed). | |
3873 | // | |
3874 | // However, the linker may be part of a system where a zero-length | |
3875 | // file is created for it to write to, with tight permissions (gcc | |
3876 | // 2.95 did something like this). Unlinking the file would work | |
3877 | // around those permission controls, so we only unlink if the file | |
3878 | // has a non-zero size. We also unlink only regular files to avoid | |
3879 | // trouble with directories/etc. | |
3880 | // | |
3881 | // If we fail, continue; this command is merely a best-effort attempt | |
3882 | // to improve the odds for open(). | |
3883 | ||
42a1b686 | 3884 | // We let the name "-" mean "stdout" |
516cb3d0 | 3885 | if (!this->is_temporary_) |
42a1b686 | 3886 | { |
516cb3d0 ILT |
3887 | if (strcmp(this->name_, "-") == 0) |
3888 | this->o_ = STDOUT_FILENO; | |
3889 | else | |
3890 | { | |
3891 | struct stat s; | |
6a89f575 CC |
3892 | if (::stat(this->name_, &s) == 0 |
3893 | && (S_ISREG (s.st_mode) || S_ISLNK (s.st_mode))) | |
3894 | { | |
3895 | if (s.st_size != 0) | |
3896 | ::unlink(this->name_); | |
3897 | else if (!parameters->options().relocatable()) | |
3898 | { | |
3899 | // If we don't unlink the existing file, add execute | |
3900 | // permission where read permissions already exist | |
3901 | // and where the umask permits. | |
3902 | int mask = ::umask(0); | |
3903 | ::umask(mask); | |
3904 | s.st_mode |= (s.st_mode & 0444) >> 2; | |
3905 | ::chmod(this->name_, s.st_mode & ~mask); | |
3906 | } | |
3907 | } | |
516cb3d0 | 3908 | |
8851ecca | 3909 | int mode = parameters->options().relocatable() ? 0666 : 0777; |
2a00e4fb ILT |
3910 | int o = open_descriptor(-1, this->name_, O_RDWR | O_CREAT | O_TRUNC, |
3911 | mode); | |
516cb3d0 ILT |
3912 | if (o < 0) |
3913 | gold_fatal(_("%s: open: %s"), this->name_, strerror(errno)); | |
3914 | this->o_ = o; | |
3915 | } | |
42a1b686 | 3916 | } |
61ba1cf9 | 3917 | |
27bc2bce ILT |
3918 | this->map(); |
3919 | } | |
3920 | ||
3921 | // Resize the output file. | |
3922 | ||
3923 | void | |
3924 | Output_file::resize(off_t file_size) | |
3925 | { | |
c420411f ILT |
3926 | // If the mmap is mapping an anonymous memory buffer, this is easy: |
3927 | // just mremap to the new size. If it's mapping to a file, we want | |
3928 | // to unmap to flush to the file, then remap after growing the file. | |
3929 | if (this->map_is_anonymous_) | |
3930 | { | |
3931 | void* base = ::mremap(this->base_, this->file_size_, file_size, | |
3932 | MREMAP_MAYMOVE); | |
3933 | if (base == MAP_FAILED) | |
3934 | gold_fatal(_("%s: mremap: %s"), this->name_, strerror(errno)); | |
3935 | this->base_ = static_cast<unsigned char*>(base); | |
3936 | this->file_size_ = file_size; | |
3937 | } | |
3938 | else | |
3939 | { | |
3940 | this->unmap(); | |
3941 | this->file_size_ = file_size; | |
fdcac5af ILT |
3942 | if (!this->map_no_anonymous()) |
3943 | gold_fatal(_("%s: mmap: %s"), this->name_, strerror(errno)); | |
c420411f | 3944 | } |
27bc2bce ILT |
3945 | } |
3946 | ||
404c2abb ILT |
3947 | // Map an anonymous block of memory which will later be written to the |
3948 | // file. Return whether the map succeeded. | |
26736d8e | 3949 | |
404c2abb | 3950 | bool |
26736d8e ILT |
3951 | Output_file::map_anonymous() |
3952 | { | |
404c2abb ILT |
3953 | void* base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, |
3954 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
3955 | if (base != MAP_FAILED) | |
3956 | { | |
3957 | this->map_is_anonymous_ = true; | |
3958 | this->base_ = static_cast<unsigned char*>(base); | |
3959 | return true; | |
3960 | } | |
3961 | return false; | |
26736d8e ILT |
3962 | } |
3963 | ||
404c2abb | 3964 | // Map the file into memory. Return whether the mapping succeeded. |
27bc2bce | 3965 | |
404c2abb ILT |
3966 | bool |
3967 | Output_file::map_no_anonymous() | |
27bc2bce | 3968 | { |
c420411f | 3969 | const int o = this->o_; |
61ba1cf9 | 3970 | |
c420411f ILT |
3971 | // If the output file is not a regular file, don't try to mmap it; |
3972 | // instead, we'll mmap a block of memory (an anonymous buffer), and | |
3973 | // then later write the buffer to the file. | |
3974 | void* base; | |
3975 | struct stat statbuf; | |
42a1b686 ILT |
3976 | if (o == STDOUT_FILENO || o == STDERR_FILENO |
3977 | || ::fstat(o, &statbuf) != 0 | |
516cb3d0 ILT |
3978 | || !S_ISREG(statbuf.st_mode) |
3979 | || this->is_temporary_) | |
404c2abb ILT |
3980 | return false; |
3981 | ||
3982 | // Ensure that we have disk space available for the file. If we | |
3983 | // don't do this, it is possible that we will call munmap, close, | |
3984 | // and exit with dirty buffers still in the cache with no assigned | |
3985 | // disk blocks. If the disk is out of space at that point, the | |
3986 | // output file will wind up incomplete, but we will have already | |
3987 | // exited. The alternative to fallocate would be to use fdatasync, | |
3988 | // but that would be a more significant performance hit. | |
3989 | if (::posix_fallocate(o, 0, this->file_size_) < 0) | |
3990 | gold_fatal(_("%s: %s"), this->name_, strerror(errno)); | |
3991 | ||
3992 | // Map the file into memory. | |
3993 | base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, | |
3994 | MAP_SHARED, o, 0); | |
3995 | ||
3996 | // The mmap call might fail because of file system issues: the file | |
3997 | // system might not support mmap at all, or it might not support | |
3998 | // mmap with PROT_WRITE. | |
61ba1cf9 | 3999 | if (base == MAP_FAILED) |
404c2abb ILT |
4000 | return false; |
4001 | ||
4002 | this->map_is_anonymous_ = false; | |
61ba1cf9 | 4003 | this->base_ = static_cast<unsigned char*>(base); |
404c2abb ILT |
4004 | return true; |
4005 | } | |
4006 | ||
4007 | // Map the file into memory. | |
4008 | ||
4009 | void | |
4010 | Output_file::map() | |
4011 | { | |
4012 | if (this->map_no_anonymous()) | |
4013 | return; | |
4014 | ||
4015 | // The mmap call might fail because of file system issues: the file | |
4016 | // system might not support mmap at all, or it might not support | |
4017 | // mmap with PROT_WRITE. I'm not sure which errno values we will | |
4018 | // see in all cases, so if the mmap fails for any reason and we | |
4019 | // don't care about file contents, try for an anonymous map. | |
4020 | if (this->map_anonymous()) | |
4021 | return; | |
4022 | ||
4023 | gold_fatal(_("%s: mmap: failed to allocate %lu bytes for output file: %s"), | |
4024 | this->name_, static_cast<unsigned long>(this->file_size_), | |
4025 | strerror(errno)); | |
61ba1cf9 ILT |
4026 | } |
4027 | ||
c420411f | 4028 | // Unmap the file from memory. |
61ba1cf9 ILT |
4029 | |
4030 | void | |
c420411f | 4031 | Output_file::unmap() |
61ba1cf9 ILT |
4032 | { |
4033 | if (::munmap(this->base_, this->file_size_) < 0) | |
a0c4fb0a | 4034 | gold_error(_("%s: munmap: %s"), this->name_, strerror(errno)); |
61ba1cf9 | 4035 | this->base_ = NULL; |
c420411f ILT |
4036 | } |
4037 | ||
4038 | // Close the output file. | |
4039 | ||
4040 | void | |
4041 | Output_file::close() | |
4042 | { | |
4043 | // If the map isn't file-backed, we need to write it now. | |
516cb3d0 | 4044 | if (this->map_is_anonymous_ && !this->is_temporary_) |
c420411f ILT |
4045 | { |
4046 | size_t bytes_to_write = this->file_size_; | |
6d1e3092 | 4047 | size_t offset = 0; |
c420411f ILT |
4048 | while (bytes_to_write > 0) |
4049 | { | |
6d1e3092 CD |
4050 | ssize_t bytes_written = ::write(this->o_, this->base_ + offset, |
4051 | bytes_to_write); | |
c420411f ILT |
4052 | if (bytes_written == 0) |
4053 | gold_error(_("%s: write: unexpected 0 return-value"), this->name_); | |
4054 | else if (bytes_written < 0) | |
4055 | gold_error(_("%s: write: %s"), this->name_, strerror(errno)); | |
4056 | else | |
6d1e3092 CD |
4057 | { |
4058 | bytes_to_write -= bytes_written; | |
4059 | offset += bytes_written; | |
4060 | } | |
c420411f ILT |
4061 | } |
4062 | } | |
4063 | this->unmap(); | |
61ba1cf9 | 4064 | |
42a1b686 | 4065 | // We don't close stdout or stderr |
516cb3d0 ILT |
4066 | if (this->o_ != STDOUT_FILENO |
4067 | && this->o_ != STDERR_FILENO | |
4068 | && !this->is_temporary_) | |
42a1b686 ILT |
4069 | if (::close(this->o_) < 0) |
4070 | gold_error(_("%s: close: %s"), this->name_, strerror(errno)); | |
61ba1cf9 | 4071 | this->o_ = -1; |
a2fb1b05 ILT |
4072 | } |
4073 | ||
4074 | // Instantiate the templates we need. We could use the configure | |
4075 | // script to restrict this to only the ones for implemented targets. | |
4076 | ||
193a53d9 | 4077 | #ifdef HAVE_TARGET_32_LITTLE |
a2fb1b05 ILT |
4078 | template |
4079 | off_t | |
4080 | Output_section::add_input_section<32, false>( | |
730cdc88 | 4081 | Sized_relobj<32, false>* object, |
ead1e424 | 4082 | unsigned int shndx, |
a2fb1b05 | 4083 | const char* secname, |
730cdc88 | 4084 | const elfcpp::Shdr<32, false>& shdr, |
a445fddf ILT |
4085 | unsigned int reloc_shndx, |
4086 | bool have_sections_script); | |
193a53d9 | 4087 | #endif |
a2fb1b05 | 4088 | |
193a53d9 | 4089 | #ifdef HAVE_TARGET_32_BIG |
a2fb1b05 ILT |
4090 | template |
4091 | off_t | |
4092 | Output_section::add_input_section<32, true>( | |
730cdc88 | 4093 | Sized_relobj<32, true>* object, |
ead1e424 | 4094 | unsigned int shndx, |
a2fb1b05 | 4095 | const char* secname, |
730cdc88 | 4096 | const elfcpp::Shdr<32, true>& shdr, |
a445fddf ILT |
4097 | unsigned int reloc_shndx, |
4098 | bool have_sections_script); | |
193a53d9 | 4099 | #endif |
a2fb1b05 | 4100 | |
193a53d9 | 4101 | #ifdef HAVE_TARGET_64_LITTLE |
a2fb1b05 ILT |
4102 | template |
4103 | off_t | |
4104 | Output_section::add_input_section<64, false>( | |
730cdc88 | 4105 | Sized_relobj<64, false>* object, |
ead1e424 | 4106 | unsigned int shndx, |
a2fb1b05 | 4107 | const char* secname, |
730cdc88 | 4108 | const elfcpp::Shdr<64, false>& shdr, |
a445fddf ILT |
4109 | unsigned int reloc_shndx, |
4110 | bool have_sections_script); | |
193a53d9 | 4111 | #endif |
a2fb1b05 | 4112 | |
193a53d9 | 4113 | #ifdef HAVE_TARGET_64_BIG |
a2fb1b05 ILT |
4114 | template |
4115 | off_t | |
4116 | Output_section::add_input_section<64, true>( | |
730cdc88 | 4117 | Sized_relobj<64, true>* object, |
ead1e424 | 4118 | unsigned int shndx, |
a2fb1b05 | 4119 | const char* secname, |
730cdc88 | 4120 | const elfcpp::Shdr<64, true>& shdr, |
a445fddf ILT |
4121 | unsigned int reloc_shndx, |
4122 | bool have_sections_script); | |
193a53d9 | 4123 | #endif |
a2fb1b05 | 4124 | |
bbbfea06 CC |
4125 | #ifdef HAVE_TARGET_32_LITTLE |
4126 | template | |
4127 | class Output_reloc<elfcpp::SHT_REL, false, 32, false>; | |
4128 | #endif | |
4129 | ||
4130 | #ifdef HAVE_TARGET_32_BIG | |
4131 | template | |
4132 | class Output_reloc<elfcpp::SHT_REL, false, 32, true>; | |
4133 | #endif | |
4134 | ||
4135 | #ifdef HAVE_TARGET_64_LITTLE | |
4136 | template | |
4137 | class Output_reloc<elfcpp::SHT_REL, false, 64, false>; | |
4138 | #endif | |
4139 | ||
4140 | #ifdef HAVE_TARGET_64_BIG | |
4141 | template | |
4142 | class Output_reloc<elfcpp::SHT_REL, false, 64, true>; | |
4143 | #endif | |
4144 | ||
4145 | #ifdef HAVE_TARGET_32_LITTLE | |
4146 | template | |
4147 | class Output_reloc<elfcpp::SHT_REL, true, 32, false>; | |
4148 | #endif | |
4149 | ||
4150 | #ifdef HAVE_TARGET_32_BIG | |
4151 | template | |
4152 | class Output_reloc<elfcpp::SHT_REL, true, 32, true>; | |
4153 | #endif | |
4154 | ||
4155 | #ifdef HAVE_TARGET_64_LITTLE | |
4156 | template | |
4157 | class Output_reloc<elfcpp::SHT_REL, true, 64, false>; | |
4158 | #endif | |
4159 | ||
4160 | #ifdef HAVE_TARGET_64_BIG | |
4161 | template | |
4162 | class Output_reloc<elfcpp::SHT_REL, true, 64, true>; | |
4163 | #endif | |
4164 | ||
4165 | #ifdef HAVE_TARGET_32_LITTLE | |
4166 | template | |
4167 | class Output_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
4168 | #endif | |
4169 | ||
4170 | #ifdef HAVE_TARGET_32_BIG | |
4171 | template | |
4172 | class Output_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
4173 | #endif | |
4174 | ||
4175 | #ifdef HAVE_TARGET_64_LITTLE | |
4176 | template | |
4177 | class Output_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
4178 | #endif | |
4179 | ||
4180 | #ifdef HAVE_TARGET_64_BIG | |
4181 | template | |
4182 | class Output_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
4183 | #endif | |
4184 | ||
4185 | #ifdef HAVE_TARGET_32_LITTLE | |
4186 | template | |
4187 | class Output_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
4188 | #endif | |
4189 | ||
4190 | #ifdef HAVE_TARGET_32_BIG | |
4191 | template | |
4192 | class Output_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
4193 | #endif | |
4194 | ||
4195 | #ifdef HAVE_TARGET_64_LITTLE | |
4196 | template | |
4197 | class Output_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
4198 | #endif | |
4199 | ||
4200 | #ifdef HAVE_TARGET_64_BIG | |
4201 | template | |
4202 | class Output_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
4203 | #endif | |
4204 | ||
193a53d9 | 4205 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4206 | template |
4207 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>; | |
193a53d9 | 4208 | #endif |
c06b7b0b | 4209 | |
193a53d9 | 4210 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4211 | template |
4212 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, true>; | |
193a53d9 | 4213 | #endif |
c06b7b0b | 4214 | |
193a53d9 | 4215 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4216 | template |
4217 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, false>; | |
193a53d9 | 4218 | #endif |
c06b7b0b | 4219 | |
193a53d9 | 4220 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4221 | template |
4222 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, true>; | |
193a53d9 | 4223 | #endif |
c06b7b0b | 4224 | |
193a53d9 | 4225 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4226 | template |
4227 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, false>; | |
193a53d9 | 4228 | #endif |
c06b7b0b | 4229 | |
193a53d9 | 4230 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4231 | template |
4232 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, true>; | |
193a53d9 | 4233 | #endif |
c06b7b0b | 4234 | |
193a53d9 | 4235 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4236 | template |
4237 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, false>; | |
193a53d9 | 4238 | #endif |
c06b7b0b | 4239 | |
193a53d9 | 4240 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4241 | template |
4242 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, true>; | |
193a53d9 | 4243 | #endif |
c06b7b0b | 4244 | |
193a53d9 | 4245 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4246 | template |
4247 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
193a53d9 | 4248 | #endif |
c06b7b0b | 4249 | |
193a53d9 | 4250 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4251 | template |
4252 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
193a53d9 | 4253 | #endif |
c06b7b0b | 4254 | |
193a53d9 | 4255 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4256 | template |
4257 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
193a53d9 | 4258 | #endif |
c06b7b0b | 4259 | |
193a53d9 | 4260 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4261 | template |
4262 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
193a53d9 | 4263 | #endif |
c06b7b0b | 4264 | |
193a53d9 | 4265 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4266 | template |
4267 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
193a53d9 | 4268 | #endif |
c06b7b0b | 4269 | |
193a53d9 | 4270 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4271 | template |
4272 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
193a53d9 | 4273 | #endif |
c06b7b0b | 4274 | |
193a53d9 | 4275 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4276 | template |
4277 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
193a53d9 | 4278 | #endif |
c06b7b0b | 4279 | |
193a53d9 | 4280 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4281 | template |
4282 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
193a53d9 | 4283 | #endif |
c06b7b0b | 4284 | |
6a74a719 ILT |
4285 | #ifdef HAVE_TARGET_32_LITTLE |
4286 | template | |
4287 | class Output_relocatable_relocs<elfcpp::SHT_REL, 32, false>; | |
4288 | #endif | |
4289 | ||
4290 | #ifdef HAVE_TARGET_32_BIG | |
4291 | template | |
4292 | class Output_relocatable_relocs<elfcpp::SHT_REL, 32, true>; | |
4293 | #endif | |
4294 | ||
4295 | #ifdef HAVE_TARGET_64_LITTLE | |
4296 | template | |
4297 | class Output_relocatable_relocs<elfcpp::SHT_REL, 64, false>; | |
4298 | #endif | |
4299 | ||
4300 | #ifdef HAVE_TARGET_64_BIG | |
4301 | template | |
4302 | class Output_relocatable_relocs<elfcpp::SHT_REL, 64, true>; | |
4303 | #endif | |
4304 | ||
4305 | #ifdef HAVE_TARGET_32_LITTLE | |
4306 | template | |
4307 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 32, false>; | |
4308 | #endif | |
4309 | ||
4310 | #ifdef HAVE_TARGET_32_BIG | |
4311 | template | |
4312 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 32, true>; | |
4313 | #endif | |
4314 | ||
4315 | #ifdef HAVE_TARGET_64_LITTLE | |
4316 | template | |
4317 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 64, false>; | |
4318 | #endif | |
4319 | ||
4320 | #ifdef HAVE_TARGET_64_BIG | |
4321 | template | |
4322 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 64, true>; | |
4323 | #endif | |
4324 | ||
4325 | #ifdef HAVE_TARGET_32_LITTLE | |
4326 | template | |
4327 | class Output_data_group<32, false>; | |
4328 | #endif | |
4329 | ||
4330 | #ifdef HAVE_TARGET_32_BIG | |
4331 | template | |
4332 | class Output_data_group<32, true>; | |
4333 | #endif | |
4334 | ||
4335 | #ifdef HAVE_TARGET_64_LITTLE | |
4336 | template | |
4337 | class Output_data_group<64, false>; | |
4338 | #endif | |
4339 | ||
4340 | #ifdef HAVE_TARGET_64_BIG | |
4341 | template | |
4342 | class Output_data_group<64, true>; | |
4343 | #endif | |
4344 | ||
193a53d9 | 4345 | #ifdef HAVE_TARGET_32_LITTLE |
ead1e424 | 4346 | template |
dbe717ef | 4347 | class Output_data_got<32, false>; |
193a53d9 | 4348 | #endif |
ead1e424 | 4349 | |
193a53d9 | 4350 | #ifdef HAVE_TARGET_32_BIG |
ead1e424 | 4351 | template |
dbe717ef | 4352 | class Output_data_got<32, true>; |
193a53d9 | 4353 | #endif |
ead1e424 | 4354 | |
193a53d9 | 4355 | #ifdef HAVE_TARGET_64_LITTLE |
ead1e424 | 4356 | template |
dbe717ef | 4357 | class Output_data_got<64, false>; |
193a53d9 | 4358 | #endif |
ead1e424 | 4359 | |
193a53d9 | 4360 | #ifdef HAVE_TARGET_64_BIG |
ead1e424 | 4361 | template |
dbe717ef | 4362 | class Output_data_got<64, true>; |
193a53d9 | 4363 | #endif |
ead1e424 | 4364 | |
a2fb1b05 | 4365 | } // End namespace gold. |