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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 | ||
5696ab0b ILT |
216 | size_t segment_count = this->segment_list_->size(); |
217 | oshdr.put_sh_info(segment_count >= elfcpp::PN_XNUM ? segment_count : 0); | |
218 | ||
61ba1cf9 ILT |
219 | oshdr.put_sh_addralign(0); |
220 | oshdr.put_sh_entsize(0); | |
221 | } | |
222 | ||
223 | v += shdr_size; | |
224 | ||
6a74a719 | 225 | unsigned int shndx = 1; |
8851ecca | 226 | if (!parameters->options().relocatable()) |
6a74a719 ILT |
227 | { |
228 | for (Layout::Segment_list::const_iterator p = | |
229 | this->segment_list_->begin(); | |
230 | p != this->segment_list_->end(); | |
231 | ++p) | |
232 | v = (*p)->write_section_headers<size, big_endian>(this->layout_, | |
233 | this->secnamepool_, | |
234 | v, | |
235 | &shndx); | |
236 | } | |
237 | else | |
238 | { | |
239 | for (Layout::Section_list::const_iterator p = | |
240 | this->section_list_->begin(); | |
241 | p != this->section_list_->end(); | |
242 | ++p) | |
243 | { | |
244 | // We do unallocated sections below, except that group | |
245 | // sections have to come first. | |
246 | if (((*p)->flags() & elfcpp::SHF_ALLOC) == 0 | |
247 | && (*p)->type() != elfcpp::SHT_GROUP) | |
248 | continue; | |
249 | gold_assert(shndx == (*p)->out_shndx()); | |
250 | elfcpp::Shdr_write<size, big_endian> oshdr(v); | |
251 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); | |
252 | v += shdr_size; | |
253 | ++shndx; | |
254 | } | |
255 | } | |
256 | ||
a3ad94ed | 257 | for (Layout::Section_list::const_iterator p = |
16649710 ILT |
258 | this->unattached_section_list_->begin(); |
259 | p != this->unattached_section_list_->end(); | |
61ba1cf9 ILT |
260 | ++p) |
261 | { | |
6a74a719 ILT |
262 | // For a relocatable link, we did unallocated group sections |
263 | // above, since they have to come first. | |
264 | if ((*p)->type() == elfcpp::SHT_GROUP | |
8851ecca | 265 | && parameters->options().relocatable()) |
6a74a719 | 266 | continue; |
a3ad94ed | 267 | gold_assert(shndx == (*p)->out_shndx()); |
61ba1cf9 | 268 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 269 | (*p)->write_header(this->layout_, this->secnamepool_, &oshdr); |
61ba1cf9 | 270 | v += shdr_size; |
ead1e424 | 271 | ++shndx; |
61ba1cf9 ILT |
272 | } |
273 | ||
274 | of->write_output_view(this->offset(), all_shdrs_size, view); | |
a2fb1b05 ILT |
275 | } |
276 | ||
54dc6425 ILT |
277 | // Output_segment_header methods. |
278 | ||
61ba1cf9 | 279 | Output_segment_headers::Output_segment_headers( |
61ba1cf9 | 280 | const Layout::Segment_list& segment_list) |
9025d29d | 281 | : segment_list_(segment_list) |
61ba1cf9 | 282 | { |
61ba1cf9 ILT |
283 | } |
284 | ||
54dc6425 | 285 | void |
61ba1cf9 | 286 | Output_segment_headers::do_write(Output_file* of) |
75f65a3e | 287 | { |
8851ecca | 288 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 289 | { |
9025d29d | 290 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
291 | case Parameters::TARGET_32_LITTLE: |
292 | this->do_sized_write<32, false>(of); | |
293 | break; | |
9025d29d | 294 | #endif |
8851ecca ILT |
295 | #ifdef HAVE_TARGET_32_BIG |
296 | case Parameters::TARGET_32_BIG: | |
297 | this->do_sized_write<32, true>(of); | |
298 | break; | |
9025d29d | 299 | #endif |
9025d29d | 300 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
301 | case Parameters::TARGET_64_LITTLE: |
302 | this->do_sized_write<64, false>(of); | |
303 | break; | |
9025d29d | 304 | #endif |
8851ecca ILT |
305 | #ifdef HAVE_TARGET_64_BIG |
306 | case Parameters::TARGET_64_BIG: | |
307 | this->do_sized_write<64, true>(of); | |
308 | break; | |
309 | #endif | |
310 | default: | |
311 | gold_unreachable(); | |
61ba1cf9 | 312 | } |
61ba1cf9 ILT |
313 | } |
314 | ||
315 | template<int size, bool big_endian> | |
316 | void | |
317 | Output_segment_headers::do_sized_write(Output_file* of) | |
318 | { | |
319 | const int phdr_size = elfcpp::Elf_sizes<size>::phdr_size; | |
320 | off_t all_phdrs_size = this->segment_list_.size() * phdr_size; | |
a445fddf | 321 | gold_assert(all_phdrs_size == this->data_size()); |
61ba1cf9 ILT |
322 | unsigned char* view = of->get_output_view(this->offset(), |
323 | all_phdrs_size); | |
324 | unsigned char* v = view; | |
325 | for (Layout::Segment_list::const_iterator p = this->segment_list_.begin(); | |
326 | p != this->segment_list_.end(); | |
327 | ++p) | |
328 | { | |
329 | elfcpp::Phdr_write<size, big_endian> ophdr(v); | |
330 | (*p)->write_header(&ophdr); | |
331 | v += phdr_size; | |
332 | } | |
333 | ||
a445fddf ILT |
334 | gold_assert(v - view == all_phdrs_size); |
335 | ||
61ba1cf9 | 336 | of->write_output_view(this->offset(), all_phdrs_size, view); |
75f65a3e ILT |
337 | } |
338 | ||
20e6d0d6 DK |
339 | off_t |
340 | Output_segment_headers::do_size() const | |
341 | { | |
342 | const int size = parameters->target().get_size(); | |
343 | int phdr_size; | |
344 | if (size == 32) | |
345 | phdr_size = elfcpp::Elf_sizes<32>::phdr_size; | |
346 | else if (size == 64) | |
347 | phdr_size = elfcpp::Elf_sizes<64>::phdr_size; | |
348 | else | |
349 | gold_unreachable(); | |
350 | ||
351 | return this->segment_list_.size() * phdr_size; | |
352 | } | |
353 | ||
75f65a3e ILT |
354 | // Output_file_header methods. |
355 | ||
9025d29d | 356 | Output_file_header::Output_file_header(const Target* target, |
75f65a3e | 357 | const Symbol_table* symtab, |
d391083d | 358 | const Output_segment_headers* osh, |
2ea97941 | 359 | const char* entry) |
9025d29d | 360 | : target_(target), |
75f65a3e | 361 | symtab_(symtab), |
61ba1cf9 | 362 | segment_header_(osh), |
75f65a3e | 363 | section_header_(NULL), |
d391083d | 364 | shstrtab_(NULL), |
2ea97941 | 365 | entry_(entry) |
75f65a3e | 366 | { |
20e6d0d6 | 367 | this->set_data_size(this->do_size()); |
75f65a3e ILT |
368 | } |
369 | ||
370 | // Set the section table information for a file header. | |
371 | ||
372 | void | |
373 | Output_file_header::set_section_info(const Output_section_headers* shdrs, | |
374 | const Output_section* shstrtab) | |
375 | { | |
376 | this->section_header_ = shdrs; | |
377 | this->shstrtab_ = shstrtab; | |
378 | } | |
379 | ||
380 | // Write out the file header. | |
381 | ||
382 | void | |
61ba1cf9 | 383 | Output_file_header::do_write(Output_file* of) |
54dc6425 | 384 | { |
27bc2bce ILT |
385 | gold_assert(this->offset() == 0); |
386 | ||
8851ecca | 387 | switch (parameters->size_and_endianness()) |
61ba1cf9 | 388 | { |
9025d29d | 389 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
390 | case Parameters::TARGET_32_LITTLE: |
391 | this->do_sized_write<32, false>(of); | |
392 | break; | |
9025d29d | 393 | #endif |
8851ecca ILT |
394 | #ifdef HAVE_TARGET_32_BIG |
395 | case Parameters::TARGET_32_BIG: | |
396 | this->do_sized_write<32, true>(of); | |
397 | break; | |
9025d29d | 398 | #endif |
9025d29d | 399 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
400 | case Parameters::TARGET_64_LITTLE: |
401 | this->do_sized_write<64, false>(of); | |
402 | break; | |
9025d29d | 403 | #endif |
8851ecca ILT |
404 | #ifdef HAVE_TARGET_64_BIG |
405 | case Parameters::TARGET_64_BIG: | |
406 | this->do_sized_write<64, true>(of); | |
407 | break; | |
408 | #endif | |
409 | default: | |
410 | gold_unreachable(); | |
61ba1cf9 | 411 | } |
61ba1cf9 ILT |
412 | } |
413 | ||
414 | // Write out the file header with appropriate size and endianess. | |
415 | ||
416 | template<int size, bool big_endian> | |
417 | void | |
418 | Output_file_header::do_sized_write(Output_file* of) | |
419 | { | |
a3ad94ed | 420 | gold_assert(this->offset() == 0); |
61ba1cf9 ILT |
421 | |
422 | int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size; | |
423 | unsigned char* view = of->get_output_view(0, ehdr_size); | |
424 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
425 | ||
426 | unsigned char e_ident[elfcpp::EI_NIDENT]; | |
427 | memset(e_ident, 0, elfcpp::EI_NIDENT); | |
428 | e_ident[elfcpp::EI_MAG0] = elfcpp::ELFMAG0; | |
429 | e_ident[elfcpp::EI_MAG1] = elfcpp::ELFMAG1; | |
430 | e_ident[elfcpp::EI_MAG2] = elfcpp::ELFMAG2; | |
431 | e_ident[elfcpp::EI_MAG3] = elfcpp::ELFMAG3; | |
432 | if (size == 32) | |
433 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS32; | |
434 | else if (size == 64) | |
435 | e_ident[elfcpp::EI_CLASS] = elfcpp::ELFCLASS64; | |
436 | else | |
a3ad94ed | 437 | gold_unreachable(); |
61ba1cf9 ILT |
438 | e_ident[elfcpp::EI_DATA] = (big_endian |
439 | ? elfcpp::ELFDATA2MSB | |
440 | : elfcpp::ELFDATA2LSB); | |
441 | e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT; | |
61ba1cf9 ILT |
442 | oehdr.put_e_ident(e_ident); |
443 | ||
444 | elfcpp::ET e_type; | |
8851ecca | 445 | if (parameters->options().relocatable()) |
61ba1cf9 | 446 | e_type = elfcpp::ET_REL; |
374ad285 | 447 | else if (parameters->options().output_is_position_independent()) |
436ca963 | 448 | e_type = elfcpp::ET_DYN; |
61ba1cf9 ILT |
449 | else |
450 | e_type = elfcpp::ET_EXEC; | |
451 | oehdr.put_e_type(e_type); | |
452 | ||
453 | oehdr.put_e_machine(this->target_->machine_code()); | |
454 | oehdr.put_e_version(elfcpp::EV_CURRENT); | |
455 | ||
d391083d | 456 | oehdr.put_e_entry(this->entry<size>()); |
61ba1cf9 | 457 | |
6a74a719 ILT |
458 | if (this->segment_header_ == NULL) |
459 | oehdr.put_e_phoff(0); | |
460 | else | |
461 | oehdr.put_e_phoff(this->segment_header_->offset()); | |
462 | ||
61ba1cf9 | 463 | oehdr.put_e_shoff(this->section_header_->offset()); |
d5b40221 | 464 | oehdr.put_e_flags(this->target_->processor_specific_flags()); |
61ba1cf9 | 465 | oehdr.put_e_ehsize(elfcpp::Elf_sizes<size>::ehdr_size); |
6a74a719 ILT |
466 | |
467 | if (this->segment_header_ == NULL) | |
468 | { | |
469 | oehdr.put_e_phentsize(0); | |
470 | oehdr.put_e_phnum(0); | |
471 | } | |
472 | else | |
473 | { | |
474 | oehdr.put_e_phentsize(elfcpp::Elf_sizes<size>::phdr_size); | |
5696ab0b ILT |
475 | size_t phnum = (this->segment_header_->data_size() |
476 | / elfcpp::Elf_sizes<size>::phdr_size); | |
477 | if (phnum > elfcpp::PN_XNUM) | |
478 | phnum = elfcpp::PN_XNUM; | |
479 | oehdr.put_e_phnum(phnum); | |
6a74a719 ILT |
480 | } |
481 | ||
61ba1cf9 | 482 | oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size); |
d491d34e ILT |
483 | size_t section_count = (this->section_header_->data_size() |
484 | / elfcpp::Elf_sizes<size>::shdr_size); | |
485 | ||
486 | if (section_count < elfcpp::SHN_LORESERVE) | |
487 | oehdr.put_e_shnum(this->section_header_->data_size() | |
488 | / elfcpp::Elf_sizes<size>::shdr_size); | |
489 | else | |
490 | oehdr.put_e_shnum(0); | |
491 | ||
492 | unsigned int shstrndx = this->shstrtab_->out_shndx(); | |
493 | if (shstrndx < elfcpp::SHN_LORESERVE) | |
494 | oehdr.put_e_shstrndx(this->shstrtab_->out_shndx()); | |
495 | else | |
496 | oehdr.put_e_shstrndx(elfcpp::SHN_XINDEX); | |
61ba1cf9 | 497 | |
36959681 ILT |
498 | // Let the target adjust the ELF header, e.g., to set EI_OSABI in |
499 | // the e_ident field. | |
500 | parameters->target().adjust_elf_header(view, ehdr_size); | |
501 | ||
61ba1cf9 | 502 | of->write_output_view(0, ehdr_size, view); |
54dc6425 ILT |
503 | } |
504 | ||
d391083d ILT |
505 | // Return the value to use for the entry address. THIS->ENTRY_ is the |
506 | // symbol specified on the command line, if any. | |
507 | ||
508 | template<int size> | |
509 | typename elfcpp::Elf_types<size>::Elf_Addr | |
510 | Output_file_header::entry() | |
511 | { | |
512 | const bool should_issue_warning = (this->entry_ != NULL | |
8851ecca ILT |
513 | && !parameters->options().relocatable() |
514 | && !parameters->options().shared()); | |
d391083d ILT |
515 | |
516 | // FIXME: Need to support target specific entry symbol. | |
2ea97941 ILT |
517 | const char* entry = this->entry_; |
518 | if (entry == NULL) | |
519 | entry = "_start"; | |
d391083d | 520 | |
2ea97941 | 521 | Symbol* sym = this->symtab_->lookup(entry); |
d391083d ILT |
522 | |
523 | typename Sized_symbol<size>::Value_type v; | |
524 | if (sym != NULL) | |
525 | { | |
526 | Sized_symbol<size>* ssym; | |
527 | ssym = this->symtab_->get_sized_symbol<size>(sym); | |
528 | if (!ssym->is_defined() && should_issue_warning) | |
2ea97941 | 529 | gold_warning("entry symbol '%s' exists but is not defined", entry); |
d391083d ILT |
530 | v = ssym->value(); |
531 | } | |
532 | else | |
533 | { | |
534 | // We couldn't find the entry symbol. See if we can parse it as | |
535 | // a number. This supports, e.g., -e 0x1000. | |
536 | char* endptr; | |
2ea97941 | 537 | v = strtoull(entry, &endptr, 0); |
d391083d ILT |
538 | if (*endptr != '\0') |
539 | { | |
540 | if (should_issue_warning) | |
2ea97941 | 541 | gold_warning("cannot find entry symbol '%s'", entry); |
d391083d ILT |
542 | v = 0; |
543 | } | |
544 | } | |
545 | ||
546 | return v; | |
547 | } | |
548 | ||
20e6d0d6 DK |
549 | // Compute the current data size. |
550 | ||
551 | off_t | |
552 | Output_file_header::do_size() const | |
553 | { | |
554 | const int size = parameters->target().get_size(); | |
555 | if (size == 32) | |
556 | return elfcpp::Elf_sizes<32>::ehdr_size; | |
557 | else if (size == 64) | |
558 | return elfcpp::Elf_sizes<64>::ehdr_size; | |
559 | else | |
560 | gold_unreachable(); | |
561 | } | |
562 | ||
dbe717ef ILT |
563 | // Output_data_const methods. |
564 | ||
565 | void | |
a3ad94ed | 566 | Output_data_const::do_write(Output_file* of) |
dbe717ef | 567 | { |
a3ad94ed ILT |
568 | of->write(this->offset(), this->data_.data(), this->data_.size()); |
569 | } | |
570 | ||
571 | // Output_data_const_buffer methods. | |
572 | ||
573 | void | |
574 | Output_data_const_buffer::do_write(Output_file* of) | |
575 | { | |
576 | of->write(this->offset(), this->p_, this->data_size()); | |
dbe717ef ILT |
577 | } |
578 | ||
579 | // Output_section_data methods. | |
580 | ||
16649710 ILT |
581 | // Record the output section, and set the entry size and such. |
582 | ||
583 | void | |
584 | Output_section_data::set_output_section(Output_section* os) | |
585 | { | |
586 | gold_assert(this->output_section_ == NULL); | |
587 | this->output_section_ = os; | |
588 | this->do_adjust_output_section(os); | |
589 | } | |
590 | ||
591 | // Return the section index of the output section. | |
592 | ||
dbe717ef ILT |
593 | unsigned int |
594 | Output_section_data::do_out_shndx() const | |
595 | { | |
a3ad94ed | 596 | gold_assert(this->output_section_ != NULL); |
dbe717ef ILT |
597 | return this->output_section_->out_shndx(); |
598 | } | |
599 | ||
759b1a24 ILT |
600 | // Set the alignment, which means we may need to update the alignment |
601 | // of the output section. | |
602 | ||
603 | void | |
2ea97941 | 604 | Output_section_data::set_addralign(uint64_t addralign) |
759b1a24 | 605 | { |
2ea97941 | 606 | this->addralign_ = addralign; |
759b1a24 | 607 | if (this->output_section_ != NULL |
2ea97941 ILT |
608 | && this->output_section_->addralign() < addralign) |
609 | this->output_section_->set_addralign(addralign); | |
759b1a24 ILT |
610 | } |
611 | ||
a3ad94ed ILT |
612 | // Output_data_strtab methods. |
613 | ||
27bc2bce | 614 | // Set the final data size. |
a3ad94ed ILT |
615 | |
616 | void | |
27bc2bce | 617 | Output_data_strtab::set_final_data_size() |
a3ad94ed ILT |
618 | { |
619 | this->strtab_->set_string_offsets(); | |
620 | this->set_data_size(this->strtab_->get_strtab_size()); | |
621 | } | |
622 | ||
623 | // Write out a string table. | |
624 | ||
625 | void | |
626 | Output_data_strtab::do_write(Output_file* of) | |
627 | { | |
628 | this->strtab_->write(of, this->offset()); | |
629 | } | |
630 | ||
c06b7b0b ILT |
631 | // Output_reloc methods. |
632 | ||
7bf1f802 ILT |
633 | // A reloc against a global symbol. |
634 | ||
635 | template<bool dynamic, int size, bool big_endian> | |
636 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
637 | Symbol* gsym, | |
638 | unsigned int type, | |
639 | Output_data* od, | |
e8c846c3 | 640 | Address address, |
0da6fa6c DM |
641 | bool is_relative, |
642 | bool is_symbolless) | |
7bf1f802 | 643 | : address_(address), local_sym_index_(GSYM_CODE), type_(type), |
0da6fa6c DM |
644 | is_relative_(is_relative), is_symbolless_(is_symbolless), |
645 | is_section_symbol_(false), shndx_(INVALID_CODE) | |
7bf1f802 | 646 | { |
dceae3c1 ILT |
647 | // this->type_ is a bitfield; make sure TYPE fits. |
648 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
649 | this->u1_.gsym = gsym; |
650 | this->u2_.od = od; | |
dceae3c1 ILT |
651 | if (dynamic) |
652 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
653 | } |
654 | ||
655 | template<bool dynamic, int size, bool big_endian> | |
656 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
657 | Symbol* gsym, | |
658 | unsigned int type, | |
ef9beddf | 659 | Sized_relobj<size, big_endian>* relobj, |
7bf1f802 | 660 | unsigned int shndx, |
e8c846c3 | 661 | Address address, |
0da6fa6c DM |
662 | bool is_relative, |
663 | bool is_symbolless) | |
7bf1f802 | 664 | : address_(address), local_sym_index_(GSYM_CODE), type_(type), |
0da6fa6c DM |
665 | is_relative_(is_relative), is_symbolless_(is_symbolless), |
666 | is_section_symbol_(false), shndx_(shndx) | |
7bf1f802 ILT |
667 | { |
668 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
669 | // this->type_ is a bitfield; make sure TYPE fits. |
670 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
671 | this->u1_.gsym = gsym; |
672 | this->u2_.relobj = relobj; | |
dceae3c1 ILT |
673 | if (dynamic) |
674 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
675 | } |
676 | ||
677 | // A reloc against a local symbol. | |
678 | ||
679 | template<bool dynamic, int size, bool big_endian> | |
680 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
681 | Sized_relobj<size, big_endian>* relobj, | |
682 | unsigned int local_sym_index, | |
683 | unsigned int type, | |
684 | Output_data* od, | |
e8c846c3 | 685 | Address address, |
2ea97941 | 686 | bool is_relative, |
0da6fa6c | 687 | bool is_symbolless, |
dceae3c1 | 688 | bool is_section_symbol) |
7bf1f802 | 689 | : address_(address), local_sym_index_(local_sym_index), type_(type), |
0da6fa6c DM |
690 | is_relative_(is_relative), is_symbolless_(is_symbolless), |
691 | is_section_symbol_(is_section_symbol), shndx_(INVALID_CODE) | |
7bf1f802 ILT |
692 | { |
693 | gold_assert(local_sym_index != GSYM_CODE | |
694 | && local_sym_index != INVALID_CODE); | |
dceae3c1 ILT |
695 | // this->type_ is a bitfield; make sure TYPE fits. |
696 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
697 | this->u1_.relobj = relobj; |
698 | this->u2_.od = od; | |
dceae3c1 ILT |
699 | if (dynamic) |
700 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
701 | } |
702 | ||
703 | template<bool dynamic, int size, bool big_endian> | |
704 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
705 | Sized_relobj<size, big_endian>* relobj, | |
706 | unsigned int local_sym_index, | |
707 | unsigned int type, | |
708 | unsigned int shndx, | |
e8c846c3 | 709 | Address address, |
2ea97941 | 710 | bool is_relative, |
0da6fa6c | 711 | bool is_symbolless, |
dceae3c1 | 712 | bool is_section_symbol) |
7bf1f802 | 713 | : address_(address), local_sym_index_(local_sym_index), type_(type), |
0da6fa6c DM |
714 | is_relative_(is_relative), is_symbolless_(is_symbolless), |
715 | is_section_symbol_(is_section_symbol), shndx_(shndx) | |
7bf1f802 ILT |
716 | { |
717 | gold_assert(local_sym_index != GSYM_CODE | |
718 | && local_sym_index != INVALID_CODE); | |
719 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
720 | // this->type_ is a bitfield; make sure TYPE fits. |
721 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
722 | this->u1_.relobj = relobj; |
723 | this->u2_.relobj = relobj; | |
dceae3c1 ILT |
724 | if (dynamic) |
725 | this->set_needs_dynsym_index(); | |
7bf1f802 ILT |
726 | } |
727 | ||
728 | // A reloc against the STT_SECTION symbol of an output section. | |
729 | ||
730 | template<bool dynamic, int size, bool big_endian> | |
731 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
732 | Output_section* os, | |
733 | unsigned int type, | |
734 | Output_data* od, | |
735 | Address address) | |
736 | : address_(address), local_sym_index_(SECTION_CODE), type_(type), | |
0da6fa6c DM |
737 | is_relative_(false), is_symbolless_(false), |
738 | is_section_symbol_(true), shndx_(INVALID_CODE) | |
7bf1f802 | 739 | { |
dceae3c1 ILT |
740 | // this->type_ is a bitfield; make sure TYPE fits. |
741 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
742 | this->u1_.os = os; |
743 | this->u2_.od = od; | |
744 | if (dynamic) | |
dceae3c1 ILT |
745 | this->set_needs_dynsym_index(); |
746 | else | |
747 | os->set_needs_symtab_index(); | |
7bf1f802 ILT |
748 | } |
749 | ||
750 | template<bool dynamic, int size, bool big_endian> | |
751 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
752 | Output_section* os, | |
753 | unsigned int type, | |
ef9beddf | 754 | Sized_relobj<size, big_endian>* relobj, |
7bf1f802 ILT |
755 | unsigned int shndx, |
756 | Address address) | |
757 | : address_(address), local_sym_index_(SECTION_CODE), type_(type), | |
0da6fa6c DM |
758 | is_relative_(false), is_symbolless_(false), |
759 | is_section_symbol_(true), shndx_(shndx) | |
7bf1f802 ILT |
760 | { |
761 | gold_assert(shndx != INVALID_CODE); | |
dceae3c1 ILT |
762 | // this->type_ is a bitfield; make sure TYPE fits. |
763 | gold_assert(this->type_ == type); | |
7bf1f802 ILT |
764 | this->u1_.os = os; |
765 | this->u2_.relobj = relobj; | |
766 | if (dynamic) | |
dceae3c1 ILT |
767 | this->set_needs_dynsym_index(); |
768 | else | |
769 | os->set_needs_symtab_index(); | |
770 | } | |
771 | ||
e291e7b9 ILT |
772 | // An absolute relocation. |
773 | ||
774 | template<bool dynamic, int size, bool big_endian> | |
775 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
776 | unsigned int type, | |
777 | Output_data* od, | |
778 | Address address) | |
779 | : address_(address), local_sym_index_(0), type_(type), | |
0da6fa6c DM |
780 | is_relative_(false), is_symbolless_(false), |
781 | is_section_symbol_(false), shndx_(INVALID_CODE) | |
e291e7b9 ILT |
782 | { |
783 | // this->type_ is a bitfield; make sure TYPE fits. | |
784 | gold_assert(this->type_ == type); | |
785 | this->u1_.relobj = NULL; | |
786 | this->u2_.od = od; | |
787 | } | |
788 | ||
789 | template<bool dynamic, int size, bool big_endian> | |
790 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
791 | unsigned int type, | |
792 | Sized_relobj<size, big_endian>* relobj, | |
793 | unsigned int shndx, | |
794 | Address address) | |
795 | : address_(address), local_sym_index_(0), type_(type), | |
0da6fa6c DM |
796 | is_relative_(false), is_symbolless_(false), |
797 | is_section_symbol_(false), shndx_(shndx) | |
e291e7b9 ILT |
798 | { |
799 | gold_assert(shndx != INVALID_CODE); | |
800 | // this->type_ is a bitfield; make sure TYPE fits. | |
801 | gold_assert(this->type_ == type); | |
802 | this->u1_.relobj = NULL; | |
803 | this->u2_.relobj = relobj; | |
804 | } | |
805 | ||
806 | // A target specific relocation. | |
807 | ||
808 | template<bool dynamic, int size, bool big_endian> | |
809 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
810 | unsigned int type, | |
811 | void* arg, | |
812 | Output_data* od, | |
813 | Address address) | |
814 | : address_(address), local_sym_index_(TARGET_CODE), type_(type), | |
0da6fa6c DM |
815 | is_relative_(false), is_symbolless_(false), |
816 | is_section_symbol_(false), shndx_(INVALID_CODE) | |
e291e7b9 ILT |
817 | { |
818 | // this->type_ is a bitfield; make sure TYPE fits. | |
819 | gold_assert(this->type_ == type); | |
820 | this->u1_.arg = arg; | |
821 | this->u2_.od = od; | |
822 | } | |
823 | ||
824 | template<bool dynamic, int size, bool big_endian> | |
825 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::Output_reloc( | |
826 | unsigned int type, | |
827 | void* arg, | |
828 | Sized_relobj<size, big_endian>* relobj, | |
829 | unsigned int shndx, | |
830 | Address address) | |
831 | : address_(address), local_sym_index_(TARGET_CODE), type_(type), | |
0da6fa6c DM |
832 | is_relative_(false), is_symbolless_(false), |
833 | is_section_symbol_(false), shndx_(shndx) | |
e291e7b9 ILT |
834 | { |
835 | gold_assert(shndx != INVALID_CODE); | |
836 | // this->type_ is a bitfield; make sure TYPE fits. | |
837 | gold_assert(this->type_ == type); | |
838 | this->u1_.arg = arg; | |
839 | this->u2_.relobj = relobj; | |
840 | } | |
841 | ||
dceae3c1 ILT |
842 | // Record that we need a dynamic symbol index for this relocation. |
843 | ||
844 | template<bool dynamic, int size, bool big_endian> | |
845 | void | |
846 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: | |
847 | set_needs_dynsym_index() | |
848 | { | |
0da6fa6c | 849 | if (this->is_symbolless_) |
dceae3c1 ILT |
850 | return; |
851 | switch (this->local_sym_index_) | |
852 | { | |
853 | case INVALID_CODE: | |
854 | gold_unreachable(); | |
855 | ||
856 | case GSYM_CODE: | |
857 | this->u1_.gsym->set_needs_dynsym_entry(); | |
858 | break; | |
859 | ||
860 | case SECTION_CODE: | |
861 | this->u1_.os->set_needs_dynsym_index(); | |
862 | break; | |
863 | ||
e291e7b9 ILT |
864 | case TARGET_CODE: |
865 | // The target must take care of this if necessary. | |
866 | break; | |
867 | ||
dceae3c1 ILT |
868 | case 0: |
869 | break; | |
870 | ||
871 | default: | |
872 | { | |
873 | const unsigned int lsi = this->local_sym_index_; | |
874 | if (!this->is_section_symbol_) | |
875 | this->u1_.relobj->set_needs_output_dynsym_entry(lsi); | |
876 | else | |
ef9beddf | 877 | this->u1_.relobj->output_section(lsi)->set_needs_dynsym_index(); |
dceae3c1 ILT |
878 | } |
879 | break; | |
880 | } | |
7bf1f802 ILT |
881 | } |
882 | ||
c06b7b0b ILT |
883 | // Get the symbol index of a relocation. |
884 | ||
885 | template<bool dynamic, int size, bool big_endian> | |
886 | unsigned int | |
887 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_symbol_index() | |
888 | const | |
889 | { | |
890 | unsigned int index; | |
0da6fa6c DM |
891 | if (this->is_symbolless_) |
892 | return 0; | |
c06b7b0b ILT |
893 | switch (this->local_sym_index_) |
894 | { | |
895 | case INVALID_CODE: | |
a3ad94ed | 896 | gold_unreachable(); |
c06b7b0b ILT |
897 | |
898 | case GSYM_CODE: | |
5a6f7e2d | 899 | if (this->u1_.gsym == NULL) |
c06b7b0b ILT |
900 | index = 0; |
901 | else if (dynamic) | |
5a6f7e2d | 902 | index = this->u1_.gsym->dynsym_index(); |
c06b7b0b | 903 | else |
5a6f7e2d | 904 | index = this->u1_.gsym->symtab_index(); |
c06b7b0b ILT |
905 | break; |
906 | ||
907 | case SECTION_CODE: | |
908 | if (dynamic) | |
5a6f7e2d | 909 | index = this->u1_.os->dynsym_index(); |
c06b7b0b | 910 | else |
5a6f7e2d | 911 | index = this->u1_.os->symtab_index(); |
c06b7b0b ILT |
912 | break; |
913 | ||
e291e7b9 ILT |
914 | case TARGET_CODE: |
915 | index = parameters->target().reloc_symbol_index(this->u1_.arg, | |
916 | this->type_); | |
917 | break; | |
918 | ||
436ca963 ILT |
919 | case 0: |
920 | // Relocations without symbols use a symbol index of 0. | |
921 | index = 0; | |
922 | break; | |
923 | ||
c06b7b0b | 924 | default: |
dceae3c1 ILT |
925 | { |
926 | const unsigned int lsi = this->local_sym_index_; | |
927 | if (!this->is_section_symbol_) | |
928 | { | |
929 | if (dynamic) | |
930 | index = this->u1_.relobj->dynsym_index(lsi); | |
931 | else | |
932 | index = this->u1_.relobj->symtab_index(lsi); | |
933 | } | |
934 | else | |
935 | { | |
ef9beddf | 936 | Output_section* os = this->u1_.relobj->output_section(lsi); |
dceae3c1 ILT |
937 | gold_assert(os != NULL); |
938 | if (dynamic) | |
939 | index = os->dynsym_index(); | |
940 | else | |
941 | index = os->symtab_index(); | |
942 | } | |
943 | } | |
c06b7b0b ILT |
944 | break; |
945 | } | |
a3ad94ed | 946 | gold_assert(index != -1U); |
c06b7b0b ILT |
947 | return index; |
948 | } | |
949 | ||
624f8810 ILT |
950 | // For a local section symbol, get the address of the offset ADDEND |
951 | // within the input section. | |
dceae3c1 ILT |
952 | |
953 | template<bool dynamic, int size, bool big_endian> | |
ef9beddf | 954 | typename elfcpp::Elf_types<size>::Elf_Addr |
dceae3c1 | 955 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: |
624f8810 | 956 | local_section_offset(Addend addend) const |
dceae3c1 | 957 | { |
624f8810 ILT |
958 | gold_assert(this->local_sym_index_ != GSYM_CODE |
959 | && this->local_sym_index_ != SECTION_CODE | |
e291e7b9 | 960 | && this->local_sym_index_ != TARGET_CODE |
624f8810 | 961 | && this->local_sym_index_ != INVALID_CODE |
e291e7b9 | 962 | && this->local_sym_index_ != 0 |
624f8810 | 963 | && this->is_section_symbol_); |
dceae3c1 | 964 | const unsigned int lsi = this->local_sym_index_; |
ef9beddf | 965 | Output_section* os = this->u1_.relobj->output_section(lsi); |
624f8810 | 966 | gold_assert(os != NULL); |
ef9beddf | 967 | Address offset = this->u1_.relobj->get_output_section_offset(lsi); |
eff45813 | 968 | if (offset != invalid_address) |
624f8810 ILT |
969 | return offset + addend; |
970 | // This is a merge section. | |
971 | offset = os->output_address(this->u1_.relobj, lsi, addend); | |
eff45813 | 972 | gold_assert(offset != invalid_address); |
dceae3c1 ILT |
973 | return offset; |
974 | } | |
975 | ||
d98bc257 | 976 | // Get the output address of a relocation. |
c06b7b0b ILT |
977 | |
978 | template<bool dynamic, int size, bool big_endian> | |
a984ee1d | 979 | typename elfcpp::Elf_types<size>::Elf_Addr |
d98bc257 | 980 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::get_address() const |
c06b7b0b | 981 | { |
a3ad94ed | 982 | Address address = this->address_; |
5a6f7e2d ILT |
983 | if (this->shndx_ != INVALID_CODE) |
984 | { | |
ef9beddf | 985 | Output_section* os = this->u2_.relobj->output_section(this->shndx_); |
5a6f7e2d | 986 | gold_assert(os != NULL); |
ef9beddf | 987 | Address off = this->u2_.relobj->get_output_section_offset(this->shndx_); |
eff45813 | 988 | if (off != invalid_address) |
730cdc88 ILT |
989 | address += os->address() + off; |
990 | else | |
991 | { | |
992 | address = os->output_address(this->u2_.relobj, this->shndx_, | |
993 | address); | |
eff45813 | 994 | gold_assert(address != invalid_address); |
730cdc88 | 995 | } |
5a6f7e2d ILT |
996 | } |
997 | else if (this->u2_.od != NULL) | |
998 | address += this->u2_.od->address(); | |
d98bc257 ILT |
999 | return address; |
1000 | } | |
1001 | ||
1002 | // Write out the offset and info fields of a Rel or Rela relocation | |
1003 | // entry. | |
1004 | ||
1005 | template<bool dynamic, int size, bool big_endian> | |
1006 | template<typename Write_rel> | |
1007 | void | |
1008 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write_rel( | |
1009 | Write_rel* wr) const | |
1010 | { | |
1011 | wr->put_r_offset(this->get_address()); | |
0da6fa6c | 1012 | unsigned int sym_index = this->get_symbol_index(); |
e8c846c3 | 1013 | wr->put_r_info(elfcpp::elf_r_info<size>(sym_index, this->type_)); |
c06b7b0b ILT |
1014 | } |
1015 | ||
1016 | // Write out a Rel relocation. | |
1017 | ||
1018 | template<bool dynamic, int size, bool big_endian> | |
1019 | void | |
1020 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::write( | |
1021 | unsigned char* pov) const | |
1022 | { | |
1023 | elfcpp::Rel_write<size, big_endian> orel(pov); | |
1024 | this->write_rel(&orel); | |
1025 | } | |
1026 | ||
e8c846c3 ILT |
1027 | // Get the value of the symbol referred to by a Rel relocation. |
1028 | ||
1029 | template<bool dynamic, int size, bool big_endian> | |
1030 | typename elfcpp::Elf_types<size>::Elf_Addr | |
d1f003c6 | 1031 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>::symbol_value( |
624f8810 | 1032 | Addend addend) const |
e8c846c3 ILT |
1033 | { |
1034 | if (this->local_sym_index_ == GSYM_CODE) | |
1035 | { | |
1036 | const Sized_symbol<size>* sym; | |
1037 | sym = static_cast<const Sized_symbol<size>*>(this->u1_.gsym); | |
d1f003c6 | 1038 | return sym->value() + addend; |
e8c846c3 ILT |
1039 | } |
1040 | gold_assert(this->local_sym_index_ != SECTION_CODE | |
e291e7b9 | 1041 | && this->local_sym_index_ != TARGET_CODE |
d1f003c6 | 1042 | && this->local_sym_index_ != INVALID_CODE |
e291e7b9 | 1043 | && this->local_sym_index_ != 0 |
d1f003c6 ILT |
1044 | && !this->is_section_symbol_); |
1045 | const unsigned int lsi = this->local_sym_index_; | |
1046 | const Symbol_value<size>* symval = this->u1_.relobj->local_symbol(lsi); | |
1047 | return symval->value(this->u1_.relobj, addend); | |
e8c846c3 ILT |
1048 | } |
1049 | ||
d98bc257 ILT |
1050 | // Reloc comparison. This function sorts the dynamic relocs for the |
1051 | // benefit of the dynamic linker. First we sort all relative relocs | |
1052 | // to the front. Among relative relocs, we sort by output address. | |
1053 | // Among non-relative relocs, we sort by symbol index, then by output | |
1054 | // address. | |
1055 | ||
1056 | template<bool dynamic, int size, bool big_endian> | |
1057 | int | |
1058 | Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>:: | |
1059 | compare(const Output_reloc<elfcpp::SHT_REL, dynamic, size, big_endian>& r2) | |
1060 | const | |
1061 | { | |
1062 | if (this->is_relative_) | |
1063 | { | |
1064 | if (!r2.is_relative_) | |
1065 | return -1; | |
1066 | // Otherwise sort by reloc address below. | |
1067 | } | |
1068 | else if (r2.is_relative_) | |
1069 | return 1; | |
1070 | else | |
1071 | { | |
1072 | unsigned int sym1 = this->get_symbol_index(); | |
1073 | unsigned int sym2 = r2.get_symbol_index(); | |
1074 | if (sym1 < sym2) | |
1075 | return -1; | |
1076 | else if (sym1 > sym2) | |
1077 | return 1; | |
1078 | // Otherwise sort by reloc address. | |
1079 | } | |
1080 | ||
1081 | section_offset_type addr1 = this->get_address(); | |
1082 | section_offset_type addr2 = r2.get_address(); | |
1083 | if (addr1 < addr2) | |
1084 | return -1; | |
1085 | else if (addr1 > addr2) | |
1086 | return 1; | |
1087 | ||
1088 | // Final tie breaker, in order to generate the same output on any | |
1089 | // host: reloc type. | |
1090 | unsigned int type1 = this->type_; | |
1091 | unsigned int type2 = r2.type_; | |
1092 | if (type1 < type2) | |
1093 | return -1; | |
1094 | else if (type1 > type2) | |
1095 | return 1; | |
1096 | ||
1097 | // These relocs appear to be exactly the same. | |
1098 | return 0; | |
1099 | } | |
1100 | ||
c06b7b0b ILT |
1101 | // Write out a Rela relocation. |
1102 | ||
1103 | template<bool dynamic, int size, bool big_endian> | |
1104 | void | |
1105 | Output_reloc<elfcpp::SHT_RELA, dynamic, size, big_endian>::write( | |
1106 | unsigned char* pov) const | |
1107 | { | |
1108 | elfcpp::Rela_write<size, big_endian> orel(pov); | |
1109 | this->rel_.write_rel(&orel); | |
e8c846c3 | 1110 | Addend addend = this->addend_; |
e291e7b9 ILT |
1111 | if (this->rel_.is_target_specific()) |
1112 | addend = parameters->target().reloc_addend(this->rel_.target_arg(), | |
1113 | this->rel_.type(), addend); | |
0da6fa6c | 1114 | else if (this->rel_.is_symbolless()) |
d1f003c6 ILT |
1115 | addend = this->rel_.symbol_value(addend); |
1116 | else if (this->rel_.is_local_section_symbol()) | |
624f8810 | 1117 | addend = this->rel_.local_section_offset(addend); |
e8c846c3 | 1118 | orel.put_r_addend(addend); |
c06b7b0b ILT |
1119 | } |
1120 | ||
1121 | // Output_data_reloc_base methods. | |
1122 | ||
16649710 ILT |
1123 | // Adjust the output section. |
1124 | ||
1125 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
1126 | void | |
1127 | Output_data_reloc_base<sh_type, dynamic, size, big_endian> | |
1128 | ::do_adjust_output_section(Output_section* os) | |
1129 | { | |
1130 | if (sh_type == elfcpp::SHT_REL) | |
1131 | os->set_entsize(elfcpp::Elf_sizes<size>::rel_size); | |
1132 | else if (sh_type == elfcpp::SHT_RELA) | |
1133 | os->set_entsize(elfcpp::Elf_sizes<size>::rela_size); | |
1134 | else | |
1135 | gold_unreachable(); | |
1136 | if (dynamic) | |
1137 | os->set_should_link_to_dynsym(); | |
1138 | else | |
1139 | os->set_should_link_to_symtab(); | |
1140 | } | |
1141 | ||
c06b7b0b ILT |
1142 | // Write out relocation data. |
1143 | ||
1144 | template<int sh_type, bool dynamic, int size, bool big_endian> | |
1145 | void | |
1146 | Output_data_reloc_base<sh_type, dynamic, size, big_endian>::do_write( | |
1147 | Output_file* of) | |
1148 | { | |
1149 | const off_t off = this->offset(); | |
1150 | const off_t oview_size = this->data_size(); | |
1151 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
1152 | ||
3a44184e | 1153 | if (this->sort_relocs()) |
d98bc257 ILT |
1154 | { |
1155 | gold_assert(dynamic); | |
1156 | std::sort(this->relocs_.begin(), this->relocs_.end(), | |
1157 | Sort_relocs_comparison()); | |
1158 | } | |
1159 | ||
c06b7b0b ILT |
1160 | unsigned char* pov = oview; |
1161 | for (typename Relocs::const_iterator p = this->relocs_.begin(); | |
1162 | p != this->relocs_.end(); | |
1163 | ++p) | |
1164 | { | |
1165 | p->write(pov); | |
1166 | pov += reloc_size; | |
1167 | } | |
1168 | ||
a3ad94ed | 1169 | gold_assert(pov - oview == oview_size); |
c06b7b0b ILT |
1170 | |
1171 | of->write_output_view(off, oview_size, oview); | |
1172 | ||
1173 | // We no longer need the relocation entries. | |
1174 | this->relocs_.clear(); | |
1175 | } | |
1176 | ||
6a74a719 ILT |
1177 | // Class Output_relocatable_relocs. |
1178 | ||
1179 | template<int sh_type, int size, bool big_endian> | |
1180 | void | |
1181 | Output_relocatable_relocs<sh_type, size, big_endian>::set_final_data_size() | |
1182 | { | |
1183 | this->set_data_size(this->rr_->output_reloc_count() | |
1184 | * Reloc_types<sh_type, size, big_endian>::reloc_size); | |
1185 | } | |
1186 | ||
1187 | // class Output_data_group. | |
1188 | ||
1189 | template<int size, bool big_endian> | |
1190 | Output_data_group<size, big_endian>::Output_data_group( | |
1191 | Sized_relobj<size, big_endian>* relobj, | |
1192 | section_size_type entry_count, | |
8825ac63 ILT |
1193 | elfcpp::Elf_Word flags, |
1194 | std::vector<unsigned int>* input_shndxes) | |
20e6d0d6 | 1195 | : Output_section_data(entry_count * 4, 4, false), |
8825ac63 ILT |
1196 | relobj_(relobj), |
1197 | flags_(flags) | |
6a74a719 | 1198 | { |
8825ac63 | 1199 | this->input_shndxes_.swap(*input_shndxes); |
6a74a719 ILT |
1200 | } |
1201 | ||
1202 | // Write out the section group, which means translating the section | |
1203 | // indexes to apply to the output file. | |
1204 | ||
1205 | template<int size, bool big_endian> | |
1206 | void | |
1207 | Output_data_group<size, big_endian>::do_write(Output_file* of) | |
1208 | { | |
1209 | const off_t off = this->offset(); | |
1210 | const section_size_type oview_size = | |
1211 | convert_to_section_size_type(this->data_size()); | |
1212 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
1213 | ||
1214 | elfcpp::Elf_Word* contents = reinterpret_cast<elfcpp::Elf_Word*>(oview); | |
1215 | elfcpp::Swap<32, big_endian>::writeval(contents, this->flags_); | |
1216 | ++contents; | |
1217 | ||
1218 | for (std::vector<unsigned int>::const_iterator p = | |
8825ac63 ILT |
1219 | this->input_shndxes_.begin(); |
1220 | p != this->input_shndxes_.end(); | |
6a74a719 ILT |
1221 | ++p, ++contents) |
1222 | { | |
ef9beddf | 1223 | Output_section* os = this->relobj_->output_section(*p); |
6a74a719 ILT |
1224 | |
1225 | unsigned int output_shndx; | |
1226 | if (os != NULL) | |
1227 | output_shndx = os->out_shndx(); | |
1228 | else | |
1229 | { | |
1230 | this->relobj_->error(_("section group retained but " | |
1231 | "group element discarded")); | |
1232 | output_shndx = 0; | |
1233 | } | |
1234 | ||
1235 | elfcpp::Swap<32, big_endian>::writeval(contents, output_shndx); | |
1236 | } | |
1237 | ||
1238 | size_t wrote = reinterpret_cast<unsigned char*>(contents) - oview; | |
1239 | gold_assert(wrote == oview_size); | |
1240 | ||
1241 | of->write_output_view(off, oview_size, oview); | |
1242 | ||
1243 | // We no longer need this information. | |
8825ac63 | 1244 | this->input_shndxes_.clear(); |
6a74a719 ILT |
1245 | } |
1246 | ||
dbe717ef | 1247 | // Output_data_got::Got_entry methods. |
ead1e424 ILT |
1248 | |
1249 | // Write out the entry. | |
1250 | ||
1251 | template<int size, bool big_endian> | |
1252 | void | |
7e1edb90 | 1253 | Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const |
ead1e424 ILT |
1254 | { |
1255 | Valtype val = 0; | |
1256 | ||
1257 | switch (this->local_sym_index_) | |
1258 | { | |
1259 | case GSYM_CODE: | |
1260 | { | |
e8c846c3 ILT |
1261 | // If the symbol is resolved locally, we need to write out the |
1262 | // link-time value, which will be relocated dynamically by a | |
1263 | // RELATIVE relocation. | |
ead1e424 | 1264 | Symbol* gsym = this->u_.gsym; |
e8c846c3 ILT |
1265 | Sized_symbol<size>* sgsym; |
1266 | // This cast is a bit ugly. We don't want to put a | |
1267 | // virtual method in Symbol, because we want Symbol to be | |
1268 | // as small as possible. | |
1269 | sgsym = static_cast<Sized_symbol<size>*>(gsym); | |
1270 | val = sgsym->value(); | |
ead1e424 ILT |
1271 | } |
1272 | break; | |
1273 | ||
1274 | case CONSTANT_CODE: | |
1275 | val = this->u_.constant; | |
1276 | break; | |
1277 | ||
1278 | default: | |
d1f003c6 ILT |
1279 | { |
1280 | const unsigned int lsi = this->local_sym_index_; | |
1281 | const Symbol_value<size>* symval = this->u_.object->local_symbol(lsi); | |
1282 | val = symval->value(this->u_.object, 0); | |
1283 | } | |
e727fa71 | 1284 | break; |
ead1e424 ILT |
1285 | } |
1286 | ||
a3ad94ed | 1287 | elfcpp::Swap<size, big_endian>::writeval(pov, val); |
ead1e424 ILT |
1288 | } |
1289 | ||
dbe717ef | 1290 | // Output_data_got methods. |
ead1e424 | 1291 | |
dbe717ef ILT |
1292 | // Add an entry for a global symbol to the GOT. This returns true if |
1293 | // this is a new GOT entry, false if the symbol already had a GOT | |
1294 | // entry. | |
1295 | ||
1296 | template<int size, bool big_endian> | |
1297 | bool | |
0a65a3a7 CC |
1298 | Output_data_got<size, big_endian>::add_global( |
1299 | Symbol* gsym, | |
1300 | unsigned int got_type) | |
ead1e424 | 1301 | { |
0a65a3a7 | 1302 | if (gsym->has_got_offset(got_type)) |
dbe717ef | 1303 | return false; |
ead1e424 | 1304 | |
dbe717ef ILT |
1305 | this->entries_.push_back(Got_entry(gsym)); |
1306 | this->set_got_size(); | |
0a65a3a7 | 1307 | gsym->set_got_offset(got_type, this->last_got_offset()); |
dbe717ef ILT |
1308 | return true; |
1309 | } | |
ead1e424 | 1310 | |
7bf1f802 ILT |
1311 | // Add an entry for a global symbol to the GOT, and add a dynamic |
1312 | // relocation of type R_TYPE for the GOT entry. | |
1313 | template<int size, bool big_endian> | |
1314 | void | |
1315 | Output_data_got<size, big_endian>::add_global_with_rel( | |
1316 | Symbol* gsym, | |
0a65a3a7 | 1317 | unsigned int got_type, |
7bf1f802 ILT |
1318 | Rel_dyn* rel_dyn, |
1319 | unsigned int r_type) | |
1320 | { | |
0a65a3a7 | 1321 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1322 | return; |
1323 | ||
1324 | this->entries_.push_back(Got_entry()); | |
1325 | this->set_got_size(); | |
2ea97941 ILT |
1326 | unsigned int got_offset = this->last_got_offset(); |
1327 | gsym->set_got_offset(got_type, got_offset); | |
1328 | rel_dyn->add_global(gsym, r_type, this, got_offset); | |
7bf1f802 ILT |
1329 | } |
1330 | ||
1331 | template<int size, bool big_endian> | |
1332 | void | |
1333 | Output_data_got<size, big_endian>::add_global_with_rela( | |
1334 | Symbol* gsym, | |
0a65a3a7 | 1335 | unsigned int got_type, |
7bf1f802 ILT |
1336 | Rela_dyn* rela_dyn, |
1337 | unsigned int r_type) | |
1338 | { | |
0a65a3a7 | 1339 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1340 | return; |
1341 | ||
1342 | this->entries_.push_back(Got_entry()); | |
1343 | this->set_got_size(); | |
2ea97941 ILT |
1344 | unsigned int got_offset = this->last_got_offset(); |
1345 | gsym->set_got_offset(got_type, got_offset); | |
1346 | rela_dyn->add_global(gsym, r_type, this, got_offset, 0); | |
7bf1f802 ILT |
1347 | } |
1348 | ||
0a65a3a7 CC |
1349 | // Add a pair of entries for a global symbol to the GOT, and add |
1350 | // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. | |
1351 | // If R_TYPE_2 == 0, add the second entry with no relocation. | |
7bf1f802 ILT |
1352 | template<int size, bool big_endian> |
1353 | void | |
0a65a3a7 CC |
1354 | Output_data_got<size, big_endian>::add_global_pair_with_rel( |
1355 | Symbol* gsym, | |
1356 | unsigned int got_type, | |
7bf1f802 | 1357 | Rel_dyn* rel_dyn, |
0a65a3a7 CC |
1358 | unsigned int r_type_1, |
1359 | unsigned int r_type_2) | |
7bf1f802 | 1360 | { |
0a65a3a7 | 1361 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1362 | return; |
1363 | ||
1364 | this->entries_.push_back(Got_entry()); | |
2ea97941 ILT |
1365 | unsigned int got_offset = this->last_got_offset(); |
1366 | gsym->set_got_offset(got_type, got_offset); | |
1367 | rel_dyn->add_global(gsym, r_type_1, this, got_offset); | |
0a65a3a7 CC |
1368 | |
1369 | this->entries_.push_back(Got_entry()); | |
1370 | if (r_type_2 != 0) | |
1371 | { | |
2ea97941 ILT |
1372 | got_offset = this->last_got_offset(); |
1373 | rel_dyn->add_global(gsym, r_type_2, this, got_offset); | |
0a65a3a7 CC |
1374 | } |
1375 | ||
1376 | this->set_got_size(); | |
7bf1f802 ILT |
1377 | } |
1378 | ||
1379 | template<int size, bool big_endian> | |
1380 | void | |
0a65a3a7 CC |
1381 | Output_data_got<size, big_endian>::add_global_pair_with_rela( |
1382 | Symbol* gsym, | |
1383 | unsigned int got_type, | |
7bf1f802 | 1384 | Rela_dyn* rela_dyn, |
0a65a3a7 CC |
1385 | unsigned int r_type_1, |
1386 | unsigned int r_type_2) | |
7bf1f802 | 1387 | { |
0a65a3a7 | 1388 | if (gsym->has_got_offset(got_type)) |
7bf1f802 ILT |
1389 | return; |
1390 | ||
1391 | this->entries_.push_back(Got_entry()); | |
2ea97941 ILT |
1392 | unsigned int got_offset = this->last_got_offset(); |
1393 | gsym->set_got_offset(got_type, got_offset); | |
1394 | rela_dyn->add_global(gsym, r_type_1, this, got_offset, 0); | |
0a65a3a7 CC |
1395 | |
1396 | this->entries_.push_back(Got_entry()); | |
1397 | if (r_type_2 != 0) | |
1398 | { | |
2ea97941 ILT |
1399 | got_offset = this->last_got_offset(); |
1400 | rela_dyn->add_global(gsym, r_type_2, this, got_offset, 0); | |
0a65a3a7 CC |
1401 | } |
1402 | ||
1403 | this->set_got_size(); | |
7bf1f802 ILT |
1404 | } |
1405 | ||
0a65a3a7 CC |
1406 | // Add an entry for a local symbol to the GOT. This returns true if |
1407 | // this is a new GOT entry, false if the symbol already has a GOT | |
1408 | // entry. | |
07f397ab ILT |
1409 | |
1410 | template<int size, bool big_endian> | |
1411 | bool | |
0a65a3a7 CC |
1412 | Output_data_got<size, big_endian>::add_local( |
1413 | Sized_relobj<size, big_endian>* object, | |
1414 | unsigned int symndx, | |
1415 | unsigned int got_type) | |
07f397ab | 1416 | { |
0a65a3a7 | 1417 | if (object->local_has_got_offset(symndx, got_type)) |
07f397ab ILT |
1418 | return false; |
1419 | ||
0a65a3a7 | 1420 | this->entries_.push_back(Got_entry(object, symndx)); |
07f397ab | 1421 | this->set_got_size(); |
0a65a3a7 | 1422 | object->set_local_got_offset(symndx, got_type, this->last_got_offset()); |
07f397ab ILT |
1423 | return true; |
1424 | } | |
1425 | ||
0a65a3a7 CC |
1426 | // Add an entry for a local symbol to the GOT, and add a dynamic |
1427 | // relocation of type R_TYPE for the GOT entry. | |
7bf1f802 ILT |
1428 | template<int size, bool big_endian> |
1429 | void | |
0a65a3a7 CC |
1430 | Output_data_got<size, big_endian>::add_local_with_rel( |
1431 | Sized_relobj<size, big_endian>* object, | |
1432 | unsigned int symndx, | |
1433 | unsigned int got_type, | |
7bf1f802 ILT |
1434 | Rel_dyn* rel_dyn, |
1435 | unsigned int r_type) | |
1436 | { | |
0a65a3a7 | 1437 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1438 | return; |
1439 | ||
1440 | this->entries_.push_back(Got_entry()); | |
1441 | this->set_got_size(); | |
2ea97941 ILT |
1442 | unsigned int got_offset = this->last_got_offset(); |
1443 | object->set_local_got_offset(symndx, got_type, got_offset); | |
1444 | rel_dyn->add_local(object, symndx, r_type, this, got_offset); | |
7bf1f802 ILT |
1445 | } |
1446 | ||
1447 | template<int size, bool big_endian> | |
1448 | void | |
0a65a3a7 CC |
1449 | Output_data_got<size, big_endian>::add_local_with_rela( |
1450 | Sized_relobj<size, big_endian>* object, | |
1451 | unsigned int symndx, | |
1452 | unsigned int got_type, | |
7bf1f802 ILT |
1453 | Rela_dyn* rela_dyn, |
1454 | unsigned int r_type) | |
1455 | { | |
0a65a3a7 | 1456 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1457 | return; |
1458 | ||
1459 | this->entries_.push_back(Got_entry()); | |
1460 | this->set_got_size(); | |
2ea97941 ILT |
1461 | unsigned int got_offset = this->last_got_offset(); |
1462 | object->set_local_got_offset(symndx, got_type, got_offset); | |
1463 | rela_dyn->add_local(object, symndx, r_type, this, got_offset, 0); | |
07f397ab ILT |
1464 | } |
1465 | ||
0a65a3a7 CC |
1466 | // Add a pair of entries for a local symbol to the GOT, and add |
1467 | // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. | |
1468 | // If R_TYPE_2 == 0, add the second entry with no relocation. | |
7bf1f802 ILT |
1469 | template<int size, bool big_endian> |
1470 | void | |
0a65a3a7 | 1471 | Output_data_got<size, big_endian>::add_local_pair_with_rel( |
7bf1f802 ILT |
1472 | Sized_relobj<size, big_endian>* object, |
1473 | unsigned int symndx, | |
1474 | unsigned int shndx, | |
0a65a3a7 | 1475 | unsigned int got_type, |
7bf1f802 | 1476 | Rel_dyn* rel_dyn, |
0a65a3a7 CC |
1477 | unsigned int r_type_1, |
1478 | unsigned int r_type_2) | |
7bf1f802 | 1479 | { |
0a65a3a7 | 1480 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1481 | return; |
1482 | ||
1483 | this->entries_.push_back(Got_entry()); | |
2ea97941 ILT |
1484 | unsigned int got_offset = this->last_got_offset(); |
1485 | object->set_local_got_offset(symndx, got_type, got_offset); | |
ef9beddf | 1486 | Output_section* os = object->output_section(shndx); |
2ea97941 | 1487 | rel_dyn->add_output_section(os, r_type_1, this, got_offset); |
7bf1f802 | 1488 | |
0a65a3a7 CC |
1489 | this->entries_.push_back(Got_entry(object, symndx)); |
1490 | if (r_type_2 != 0) | |
1491 | { | |
2ea97941 ILT |
1492 | got_offset = this->last_got_offset(); |
1493 | rel_dyn->add_output_section(os, r_type_2, this, got_offset); | |
0a65a3a7 | 1494 | } |
7bf1f802 ILT |
1495 | |
1496 | this->set_got_size(); | |
1497 | } | |
1498 | ||
1499 | template<int size, bool big_endian> | |
1500 | void | |
0a65a3a7 | 1501 | Output_data_got<size, big_endian>::add_local_pair_with_rela( |
7bf1f802 ILT |
1502 | Sized_relobj<size, big_endian>* object, |
1503 | unsigned int symndx, | |
1504 | unsigned int shndx, | |
0a65a3a7 | 1505 | unsigned int got_type, |
7bf1f802 | 1506 | Rela_dyn* rela_dyn, |
0a65a3a7 CC |
1507 | unsigned int r_type_1, |
1508 | unsigned int r_type_2) | |
7bf1f802 | 1509 | { |
0a65a3a7 | 1510 | if (object->local_has_got_offset(symndx, got_type)) |
7bf1f802 ILT |
1511 | return; |
1512 | ||
1513 | this->entries_.push_back(Got_entry()); | |
2ea97941 ILT |
1514 | unsigned int got_offset = this->last_got_offset(); |
1515 | object->set_local_got_offset(symndx, got_type, got_offset); | |
ef9beddf | 1516 | Output_section* os = object->output_section(shndx); |
2ea97941 | 1517 | rela_dyn->add_output_section(os, r_type_1, this, got_offset, 0); |
7bf1f802 | 1518 | |
0a65a3a7 CC |
1519 | this->entries_.push_back(Got_entry(object, symndx)); |
1520 | if (r_type_2 != 0) | |
1521 | { | |
2ea97941 ILT |
1522 | got_offset = this->last_got_offset(); |
1523 | rela_dyn->add_output_section(os, r_type_2, this, got_offset, 0); | |
0a65a3a7 | 1524 | } |
7bf1f802 ILT |
1525 | |
1526 | this->set_got_size(); | |
1527 | } | |
1528 | ||
ead1e424 ILT |
1529 | // Write out the GOT. |
1530 | ||
1531 | template<int size, bool big_endian> | |
1532 | void | |
dbe717ef | 1533 | Output_data_got<size, big_endian>::do_write(Output_file* of) |
ead1e424 ILT |
1534 | { |
1535 | const int add = size / 8; | |
1536 | ||
1537 | const off_t off = this->offset(); | |
c06b7b0b | 1538 | const off_t oview_size = this->data_size(); |
ead1e424 ILT |
1539 | unsigned char* const oview = of->get_output_view(off, oview_size); |
1540 | ||
1541 | unsigned char* pov = oview; | |
1542 | for (typename Got_entries::const_iterator p = this->entries_.begin(); | |
1543 | p != this->entries_.end(); | |
1544 | ++p) | |
1545 | { | |
7e1edb90 | 1546 | p->write(pov); |
ead1e424 ILT |
1547 | pov += add; |
1548 | } | |
1549 | ||
a3ad94ed | 1550 | gold_assert(pov - oview == oview_size); |
c06b7b0b | 1551 | |
ead1e424 ILT |
1552 | of->write_output_view(off, oview_size, oview); |
1553 | ||
1554 | // We no longer need the GOT entries. | |
1555 | this->entries_.clear(); | |
1556 | } | |
1557 | ||
a3ad94ed ILT |
1558 | // Output_data_dynamic::Dynamic_entry methods. |
1559 | ||
1560 | // Write out the entry. | |
1561 | ||
1562 | template<int size, bool big_endian> | |
1563 | void | |
1564 | Output_data_dynamic::Dynamic_entry::write( | |
1565 | unsigned char* pov, | |
7d1a9ebb | 1566 | const Stringpool* pool) const |
a3ad94ed ILT |
1567 | { |
1568 | typename elfcpp::Elf_types<size>::Elf_WXword val; | |
c2b45e22 | 1569 | switch (this->offset_) |
a3ad94ed ILT |
1570 | { |
1571 | case DYNAMIC_NUMBER: | |
1572 | val = this->u_.val; | |
1573 | break; | |
1574 | ||
a3ad94ed | 1575 | case DYNAMIC_SECTION_SIZE: |
16649710 | 1576 | val = this->u_.od->data_size(); |
612a8d3d DM |
1577 | if (this->od2 != NULL) |
1578 | val += this->od2->data_size(); | |
a3ad94ed ILT |
1579 | break; |
1580 | ||
1581 | case DYNAMIC_SYMBOL: | |
1582 | { | |
16649710 ILT |
1583 | const Sized_symbol<size>* s = |
1584 | static_cast<const Sized_symbol<size>*>(this->u_.sym); | |
a3ad94ed ILT |
1585 | val = s->value(); |
1586 | } | |
1587 | break; | |
1588 | ||
1589 | case DYNAMIC_STRING: | |
1590 | val = pool->get_offset(this->u_.str); | |
1591 | break; | |
1592 | ||
1593 | default: | |
c2b45e22 CC |
1594 | val = this->u_.od->address() + this->offset_; |
1595 | break; | |
a3ad94ed ILT |
1596 | } |
1597 | ||
1598 | elfcpp::Dyn_write<size, big_endian> dw(pov); | |
1599 | dw.put_d_tag(this->tag_); | |
1600 | dw.put_d_val(val); | |
1601 | } | |
1602 | ||
1603 | // Output_data_dynamic methods. | |
1604 | ||
16649710 ILT |
1605 | // Adjust the output section to set the entry size. |
1606 | ||
1607 | void | |
1608 | Output_data_dynamic::do_adjust_output_section(Output_section* os) | |
1609 | { | |
8851ecca | 1610 | if (parameters->target().get_size() == 32) |
16649710 | 1611 | os->set_entsize(elfcpp::Elf_sizes<32>::dyn_size); |
8851ecca | 1612 | else if (parameters->target().get_size() == 64) |
16649710 ILT |
1613 | os->set_entsize(elfcpp::Elf_sizes<64>::dyn_size); |
1614 | else | |
1615 | gold_unreachable(); | |
1616 | } | |
1617 | ||
a3ad94ed ILT |
1618 | // Set the final data size. |
1619 | ||
1620 | void | |
27bc2bce | 1621 | Output_data_dynamic::set_final_data_size() |
a3ad94ed | 1622 | { |
20e6d0d6 DK |
1623 | // Add the terminating entry if it hasn't been added. |
1624 | // Because of relaxation, we can run this multiple times. | |
9e9e071b ILT |
1625 | if (this->entries_.empty() || this->entries_.back().tag() != elfcpp::DT_NULL) |
1626 | { | |
1627 | int extra = parameters->options().spare_dynamic_tags(); | |
1628 | for (int i = 0; i < extra; ++i) | |
1629 | this->add_constant(elfcpp::DT_NULL, 0); | |
1630 | this->add_constant(elfcpp::DT_NULL, 0); | |
1631 | } | |
a3ad94ed ILT |
1632 | |
1633 | int dyn_size; | |
8851ecca | 1634 | if (parameters->target().get_size() == 32) |
a3ad94ed | 1635 | dyn_size = elfcpp::Elf_sizes<32>::dyn_size; |
8851ecca | 1636 | else if (parameters->target().get_size() == 64) |
a3ad94ed ILT |
1637 | dyn_size = elfcpp::Elf_sizes<64>::dyn_size; |
1638 | else | |
1639 | gold_unreachable(); | |
1640 | this->set_data_size(this->entries_.size() * dyn_size); | |
1641 | } | |
1642 | ||
1643 | // Write out the dynamic entries. | |
1644 | ||
1645 | void | |
1646 | Output_data_dynamic::do_write(Output_file* of) | |
1647 | { | |
8851ecca | 1648 | switch (parameters->size_and_endianness()) |
a3ad94ed | 1649 | { |
9025d29d | 1650 | #ifdef HAVE_TARGET_32_LITTLE |
8851ecca ILT |
1651 | case Parameters::TARGET_32_LITTLE: |
1652 | this->sized_write<32, false>(of); | |
1653 | break; | |
9025d29d | 1654 | #endif |
8851ecca ILT |
1655 | #ifdef HAVE_TARGET_32_BIG |
1656 | case Parameters::TARGET_32_BIG: | |
1657 | this->sized_write<32, true>(of); | |
1658 | break; | |
9025d29d | 1659 | #endif |
9025d29d | 1660 | #ifdef HAVE_TARGET_64_LITTLE |
8851ecca ILT |
1661 | case Parameters::TARGET_64_LITTLE: |
1662 | this->sized_write<64, false>(of); | |
1663 | break; | |
9025d29d | 1664 | #endif |
8851ecca ILT |
1665 | #ifdef HAVE_TARGET_64_BIG |
1666 | case Parameters::TARGET_64_BIG: | |
1667 | this->sized_write<64, true>(of); | |
1668 | break; | |
1669 | #endif | |
1670 | default: | |
1671 | gold_unreachable(); | |
a3ad94ed | 1672 | } |
a3ad94ed ILT |
1673 | } |
1674 | ||
1675 | template<int size, bool big_endian> | |
1676 | void | |
1677 | Output_data_dynamic::sized_write(Output_file* of) | |
1678 | { | |
1679 | const int dyn_size = elfcpp::Elf_sizes<size>::dyn_size; | |
1680 | ||
2ea97941 | 1681 | const off_t offset = this->offset(); |
a3ad94ed | 1682 | const off_t oview_size = this->data_size(); |
2ea97941 | 1683 | unsigned char* const oview = of->get_output_view(offset, oview_size); |
a3ad94ed ILT |
1684 | |
1685 | unsigned char* pov = oview; | |
1686 | for (typename Dynamic_entries::const_iterator p = this->entries_.begin(); | |
1687 | p != this->entries_.end(); | |
1688 | ++p) | |
1689 | { | |
7d1a9ebb | 1690 | p->write<size, big_endian>(pov, this->pool_); |
a3ad94ed ILT |
1691 | pov += dyn_size; |
1692 | } | |
1693 | ||
1694 | gold_assert(pov - oview == oview_size); | |
1695 | ||
2ea97941 | 1696 | of->write_output_view(offset, oview_size, oview); |
a3ad94ed ILT |
1697 | |
1698 | // We no longer need the dynamic entries. | |
1699 | this->entries_.clear(); | |
1700 | } | |
1701 | ||
d491d34e ILT |
1702 | // Class Output_symtab_xindex. |
1703 | ||
1704 | void | |
1705 | Output_symtab_xindex::do_write(Output_file* of) | |
1706 | { | |
2ea97941 | 1707 | const off_t offset = this->offset(); |
d491d34e | 1708 | const off_t oview_size = this->data_size(); |
2ea97941 | 1709 | unsigned char* const oview = of->get_output_view(offset, oview_size); |
d491d34e ILT |
1710 | |
1711 | memset(oview, 0, oview_size); | |
1712 | ||
1713 | if (parameters->target().is_big_endian()) | |
1714 | this->endian_do_write<true>(oview); | |
1715 | else | |
1716 | this->endian_do_write<false>(oview); | |
1717 | ||
2ea97941 | 1718 | of->write_output_view(offset, oview_size, oview); |
d491d34e ILT |
1719 | |
1720 | // We no longer need the data. | |
1721 | this->entries_.clear(); | |
1722 | } | |
1723 | ||
1724 | template<bool big_endian> | |
1725 | void | |
1726 | Output_symtab_xindex::endian_do_write(unsigned char* const oview) | |
1727 | { | |
1728 | for (Xindex_entries::const_iterator p = this->entries_.begin(); | |
1729 | p != this->entries_.end(); | |
1730 | ++p) | |
20e6d0d6 DK |
1731 | { |
1732 | unsigned int symndx = p->first; | |
1733 | gold_assert(symndx * 4 < this->data_size()); | |
1734 | elfcpp::Swap<32, big_endian>::writeval(oview + symndx * 4, p->second); | |
1735 | } | |
d491d34e ILT |
1736 | } |
1737 | ||
ead1e424 ILT |
1738 | // Output_section::Input_section methods. |
1739 | ||
1740 | // Return the data size. For an input section we store the size here. | |
1741 | // For an Output_section_data, we have to ask it for the size. | |
1742 | ||
1743 | off_t | |
1744 | Output_section::Input_section::data_size() const | |
1745 | { | |
1746 | if (this->is_input_section()) | |
b8e6aad9 | 1747 | return this->u1_.data_size; |
ead1e424 | 1748 | else |
b8e6aad9 | 1749 | return this->u2_.posd->data_size(); |
ead1e424 ILT |
1750 | } |
1751 | ||
1752 | // Set the address and file offset. | |
1753 | ||
1754 | void | |
96803768 ILT |
1755 | Output_section::Input_section::set_address_and_file_offset( |
1756 | uint64_t address, | |
1757 | off_t file_offset, | |
1758 | off_t section_file_offset) | |
ead1e424 ILT |
1759 | { |
1760 | if (this->is_input_section()) | |
96803768 ILT |
1761 | this->u2_.object->set_section_offset(this->shndx_, |
1762 | file_offset - section_file_offset); | |
ead1e424 | 1763 | else |
96803768 ILT |
1764 | this->u2_.posd->set_address_and_file_offset(address, file_offset); |
1765 | } | |
1766 | ||
a445fddf ILT |
1767 | // Reset the address and file offset. |
1768 | ||
1769 | void | |
1770 | Output_section::Input_section::reset_address_and_file_offset() | |
1771 | { | |
1772 | if (!this->is_input_section()) | |
1773 | this->u2_.posd->reset_address_and_file_offset(); | |
1774 | } | |
1775 | ||
96803768 ILT |
1776 | // Finalize the data size. |
1777 | ||
1778 | void | |
1779 | Output_section::Input_section::finalize_data_size() | |
1780 | { | |
1781 | if (!this->is_input_section()) | |
1782 | this->u2_.posd->finalize_data_size(); | |
b8e6aad9 ILT |
1783 | } |
1784 | ||
1e983657 ILT |
1785 | // Try to turn an input offset into an output offset. We want to |
1786 | // return the output offset relative to the start of this | |
1787 | // Input_section in the output section. | |
b8e6aad9 | 1788 | |
8f00aeb8 | 1789 | inline bool |
8383303e ILT |
1790 | Output_section::Input_section::output_offset( |
1791 | const Relobj* object, | |
2ea97941 ILT |
1792 | unsigned int shndx, |
1793 | section_offset_type offset, | |
8383303e | 1794 | section_offset_type *poutput) const |
b8e6aad9 ILT |
1795 | { |
1796 | if (!this->is_input_section()) | |
2ea97941 | 1797 | return this->u2_.posd->output_offset(object, shndx, offset, poutput); |
b8e6aad9 ILT |
1798 | else |
1799 | { | |
2ea97941 | 1800 | if (this->shndx_ != shndx || this->u2_.object != object) |
b8e6aad9 | 1801 | return false; |
2ea97941 | 1802 | *poutput = offset; |
b8e6aad9 ILT |
1803 | return true; |
1804 | } | |
ead1e424 ILT |
1805 | } |
1806 | ||
a9a60db6 ILT |
1807 | // Return whether this is the merge section for the input section |
1808 | // SHNDX in OBJECT. | |
1809 | ||
1810 | inline bool | |
1811 | Output_section::Input_section::is_merge_section_for(const Relobj* object, | |
2ea97941 | 1812 | unsigned int shndx) const |
a9a60db6 ILT |
1813 | { |
1814 | if (this->is_input_section()) | |
1815 | return false; | |
2ea97941 | 1816 | return this->u2_.posd->is_merge_section_for(object, shndx); |
a9a60db6 ILT |
1817 | } |
1818 | ||
ead1e424 ILT |
1819 | // Write out the data. We don't have to do anything for an input |
1820 | // section--they are handled via Object::relocate--but this is where | |
1821 | // we write out the data for an Output_section_data. | |
1822 | ||
1823 | void | |
1824 | Output_section::Input_section::write(Output_file* of) | |
1825 | { | |
1826 | if (!this->is_input_section()) | |
b8e6aad9 | 1827 | this->u2_.posd->write(of); |
ead1e424 ILT |
1828 | } |
1829 | ||
96803768 ILT |
1830 | // Write the data to a buffer. As for write(), we don't have to do |
1831 | // anything for an input section. | |
1832 | ||
1833 | void | |
1834 | Output_section::Input_section::write_to_buffer(unsigned char* buffer) | |
1835 | { | |
1836 | if (!this->is_input_section()) | |
1837 | this->u2_.posd->write_to_buffer(buffer); | |
1838 | } | |
1839 | ||
7d9e3d98 ILT |
1840 | // Print to a map file. |
1841 | ||
1842 | void | |
1843 | Output_section::Input_section::print_to_mapfile(Mapfile* mapfile) const | |
1844 | { | |
1845 | switch (this->shndx_) | |
1846 | { | |
1847 | case OUTPUT_SECTION_CODE: | |
1848 | case MERGE_DATA_SECTION_CODE: | |
1849 | case MERGE_STRING_SECTION_CODE: | |
1850 | this->u2_.posd->print_to_mapfile(mapfile); | |
1851 | break; | |
1852 | ||
20e6d0d6 DK |
1853 | case RELAXED_INPUT_SECTION_CODE: |
1854 | { | |
1855 | Output_relaxed_input_section* relaxed_section = | |
1856 | this->relaxed_input_section(); | |
1857 | mapfile->print_input_section(relaxed_section->relobj(), | |
1858 | relaxed_section->shndx()); | |
1859 | } | |
1860 | break; | |
7d9e3d98 ILT |
1861 | default: |
1862 | mapfile->print_input_section(this->u2_.object, this->shndx_); | |
1863 | break; | |
1864 | } | |
1865 | } | |
1866 | ||
a2fb1b05 ILT |
1867 | // Output_section methods. |
1868 | ||
1869 | // Construct an Output_section. NAME will point into a Stringpool. | |
1870 | ||
2ea97941 ILT |
1871 | Output_section::Output_section(const char* name, elfcpp::Elf_Word type, |
1872 | elfcpp::Elf_Xword flags) | |
1873 | : name_(name), | |
a2fb1b05 ILT |
1874 | addralign_(0), |
1875 | entsize_(0), | |
a445fddf | 1876 | load_address_(0), |
16649710 | 1877 | link_section_(NULL), |
a2fb1b05 | 1878 | link_(0), |
16649710 | 1879 | info_section_(NULL), |
6a74a719 | 1880 | info_symndx_(NULL), |
a2fb1b05 | 1881 | info_(0), |
2ea97941 ILT |
1882 | type_(type), |
1883 | flags_(flags), | |
91ea499d | 1884 | out_shndx_(-1U), |
c06b7b0b ILT |
1885 | symtab_index_(0), |
1886 | dynsym_index_(0), | |
ead1e424 ILT |
1887 | input_sections_(), |
1888 | first_input_offset_(0), | |
c51e6221 | 1889 | fills_(), |
96803768 | 1890 | postprocessing_buffer_(NULL), |
a3ad94ed | 1891 | needs_symtab_index_(false), |
16649710 ILT |
1892 | needs_dynsym_index_(false), |
1893 | should_link_to_symtab_(false), | |
730cdc88 | 1894 | should_link_to_dynsym_(false), |
27bc2bce | 1895 | after_input_sections_(false), |
7bf1f802 | 1896 | requires_postprocessing_(false), |
a445fddf ILT |
1897 | found_in_sections_clause_(false), |
1898 | has_load_address_(false), | |
755ab8af | 1899 | info_uses_section_index_(false), |
2fd32231 ILT |
1900 | may_sort_attached_input_sections_(false), |
1901 | must_sort_attached_input_sections_(false), | |
1902 | attached_input_sections_are_sorted_(false), | |
9f1d377b ILT |
1903 | is_relro_(false), |
1904 | is_relro_local_(false), | |
1a2dff53 ILT |
1905 | is_last_relro_(false), |
1906 | is_first_non_relro_(false), | |
8a5e3e08 ILT |
1907 | is_small_section_(false), |
1908 | is_large_section_(false), | |
f5c870d2 ILT |
1909 | is_interp_(false), |
1910 | is_dynamic_linker_section_(false), | |
1911 | generate_code_fills_at_write_(false), | |
e8cd95c7 | 1912 | is_entsize_zero_(false), |
8923b24c | 1913 | section_offsets_need_adjustment_(false), |
1e5d2fb1 | 1914 | is_noload_(false), |
20e6d0d6 | 1915 | tls_offset_(0), |
c0a62865 DK |
1916 | checkpoint_(NULL), |
1917 | merge_section_map_(), | |
1918 | merge_section_by_properties_map_(), | |
1919 | relaxed_input_section_map_(), | |
f5c870d2 | 1920 | is_relaxed_input_section_map_valid_(true) |
a2fb1b05 | 1921 | { |
27bc2bce ILT |
1922 | // An unallocated section has no address. Forcing this means that |
1923 | // we don't need special treatment for symbols defined in debug | |
1924 | // sections. | |
2ea97941 | 1925 | if ((flags & elfcpp::SHF_ALLOC) == 0) |
27bc2bce | 1926 | this->set_address(0); |
a2fb1b05 ILT |
1927 | } |
1928 | ||
54dc6425 ILT |
1929 | Output_section::~Output_section() |
1930 | { | |
20e6d0d6 | 1931 | delete this->checkpoint_; |
54dc6425 ILT |
1932 | } |
1933 | ||
16649710 ILT |
1934 | // Set the entry size. |
1935 | ||
1936 | void | |
1937 | Output_section::set_entsize(uint64_t v) | |
1938 | { | |
e8cd95c7 ILT |
1939 | if (this->is_entsize_zero_) |
1940 | ; | |
1941 | else if (this->entsize_ == 0) | |
16649710 | 1942 | this->entsize_ = v; |
e8cd95c7 ILT |
1943 | else if (this->entsize_ != v) |
1944 | { | |
1945 | this->entsize_ = 0; | |
1946 | this->is_entsize_zero_ = 1; | |
1947 | } | |
16649710 ILT |
1948 | } |
1949 | ||
ead1e424 | 1950 | // Add the input section SHNDX, with header SHDR, named SECNAME, in |
730cdc88 ILT |
1951 | // OBJECT, to the Output_section. RELOC_SHNDX is the index of a |
1952 | // relocation section which applies to this section, or 0 if none, or | |
1953 | // -1U if more than one. Return the offset of the input section | |
1954 | // within the output section. Return -1 if the input section will | |
1955 | // receive special handling. In the normal case we don't always keep | |
1956 | // track of input sections for an Output_section. Instead, each | |
1957 | // Object keeps track of the Output_section for each of its input | |
a445fddf ILT |
1958 | // sections. However, if HAVE_SECTIONS_SCRIPT is true, we do keep |
1959 | // track of input sections here; this is used when SECTIONS appears in | |
1960 | // a linker script. | |
a2fb1b05 ILT |
1961 | |
1962 | template<int size, bool big_endian> | |
1963 | off_t | |
730cdc88 | 1964 | Output_section::add_input_section(Sized_relobj<size, big_endian>* object, |
2ea97941 | 1965 | unsigned int shndx, |
ead1e424 | 1966 | const char* secname, |
730cdc88 | 1967 | const elfcpp::Shdr<size, big_endian>& shdr, |
a445fddf ILT |
1968 | unsigned int reloc_shndx, |
1969 | bool have_sections_script) | |
a2fb1b05 | 1970 | { |
2ea97941 ILT |
1971 | elfcpp::Elf_Xword addralign = shdr.get_sh_addralign(); |
1972 | if ((addralign & (addralign - 1)) != 0) | |
a2fb1b05 | 1973 | { |
75f2446e | 1974 | object->error(_("invalid alignment %lu for section \"%s\""), |
2ea97941 ILT |
1975 | static_cast<unsigned long>(addralign), secname); |
1976 | addralign = 1; | |
a2fb1b05 | 1977 | } |
a2fb1b05 | 1978 | |
2ea97941 ILT |
1979 | if (addralign > this->addralign_) |
1980 | this->addralign_ = addralign; | |
a2fb1b05 | 1981 | |
44a43cf9 | 1982 | typename elfcpp::Elf_types<size>::Elf_WXword sh_flags = shdr.get_sh_flags(); |
2ea97941 | 1983 | uint64_t entsize = shdr.get_sh_entsize(); |
44a43cf9 ILT |
1984 | |
1985 | // .debug_str is a mergeable string section, but is not always so | |
1986 | // marked by compilers. Mark manually here so we can optimize. | |
1987 | if (strcmp(secname, ".debug_str") == 0) | |
4f833eee ILT |
1988 | { |
1989 | sh_flags |= (elfcpp::SHF_MERGE | elfcpp::SHF_STRINGS); | |
2ea97941 | 1990 | entsize = 1; |
4f833eee | 1991 | } |
44a43cf9 | 1992 | |
e8cd95c7 ILT |
1993 | this->update_flags_for_input_section(sh_flags); |
1994 | this->set_entsize(entsize); | |
1995 | ||
b8e6aad9 | 1996 | // If this is a SHF_MERGE section, we pass all the input sections to |
730cdc88 | 1997 | // a Output_data_merge. We don't try to handle relocations for such |
e0b64032 ILT |
1998 | // a section. We don't try to handle empty merge sections--they |
1999 | // mess up the mappings, and are useless anyhow. | |
44a43cf9 | 2000 | if ((sh_flags & elfcpp::SHF_MERGE) != 0 |
e0b64032 ILT |
2001 | && reloc_shndx == 0 |
2002 | && shdr.get_sh_size() > 0) | |
b8e6aad9 | 2003 | { |
2ea97941 ILT |
2004 | if (this->add_merge_input_section(object, shndx, sh_flags, |
2005 | entsize, addralign)) | |
b8e6aad9 ILT |
2006 | { |
2007 | // Tell the relocation routines that they need to call the | |
730cdc88 | 2008 | // output_offset method to determine the final address. |
b8e6aad9 ILT |
2009 | return -1; |
2010 | } | |
2011 | } | |
2012 | ||
27bc2bce | 2013 | off_t offset_in_section = this->current_data_size_for_child(); |
c51e6221 | 2014 | off_t aligned_offset_in_section = align_address(offset_in_section, |
2ea97941 | 2015 | addralign); |
c51e6221 | 2016 | |
c0a62865 DK |
2017 | // Determine if we want to delay code-fill generation until the output |
2018 | // section is written. When the target is relaxing, we want to delay fill | |
2019 | // generating to avoid adjusting them during relaxation. | |
2020 | if (!this->generate_code_fills_at_write_ | |
2021 | && !have_sections_script | |
2022 | && (sh_flags & elfcpp::SHF_EXECINSTR) != 0 | |
2023 | && parameters->target().has_code_fill() | |
2024 | && parameters->target().may_relax()) | |
2025 | { | |
2026 | gold_assert(this->fills_.empty()); | |
2027 | this->generate_code_fills_at_write_ = true; | |
2028 | } | |
2029 | ||
c51e6221 | 2030 | if (aligned_offset_in_section > offset_in_section |
c0a62865 | 2031 | && !this->generate_code_fills_at_write_ |
a445fddf | 2032 | && !have_sections_script |
44a43cf9 | 2033 | && (sh_flags & elfcpp::SHF_EXECINSTR) != 0 |
029ba973 | 2034 | && parameters->target().has_code_fill()) |
c51e6221 ILT |
2035 | { |
2036 | // We need to add some fill data. Using fill_list_ when | |
2037 | // possible is an optimization, since we will often have fill | |
2038 | // sections without input sections. | |
2039 | off_t fill_len = aligned_offset_in_section - offset_in_section; | |
2040 | if (this->input_sections_.empty()) | |
2041 | this->fills_.push_back(Fill(offset_in_section, fill_len)); | |
2042 | else | |
2043 | { | |
029ba973 | 2044 | std::string fill_data(parameters->target().code_fill(fill_len)); |
c51e6221 ILT |
2045 | Output_data_const* odc = new Output_data_const(fill_data, 1); |
2046 | this->input_sections_.push_back(Input_section(odc)); | |
2047 | } | |
2048 | } | |
2049 | ||
27bc2bce ILT |
2050 | this->set_current_data_size_for_child(aligned_offset_in_section |
2051 | + shdr.get_sh_size()); | |
a2fb1b05 | 2052 | |
ead1e424 | 2053 | // We need to keep track of this section if we are already keeping |
2fd32231 ILT |
2054 | // track of sections, or if we are relaxing. Also, if this is a |
2055 | // section which requires sorting, or which may require sorting in | |
20e6d0d6 | 2056 | // the future, we keep track of the sections. |
2fd32231 ILT |
2057 | if (have_sections_script |
2058 | || !this->input_sections_.empty() | |
2059 | || this->may_sort_attached_input_sections() | |
7d9e3d98 | 2060 | || this->must_sort_attached_input_sections() |
20e6d0d6 | 2061 | || parameters->options().user_set_Map() |
029ba973 | 2062 | || parameters->target().may_relax()) |
2ea97941 | 2063 | this->input_sections_.push_back(Input_section(object, shndx, |
ead1e424 | 2064 | shdr.get_sh_size(), |
2ea97941 | 2065 | addralign)); |
54dc6425 | 2066 | |
c51e6221 | 2067 | return aligned_offset_in_section; |
61ba1cf9 ILT |
2068 | } |
2069 | ||
ead1e424 ILT |
2070 | // Add arbitrary data to an output section. |
2071 | ||
2072 | void | |
2073 | Output_section::add_output_section_data(Output_section_data* posd) | |
2074 | { | |
b8e6aad9 ILT |
2075 | Input_section inp(posd); |
2076 | this->add_output_section_data(&inp); | |
a445fddf ILT |
2077 | |
2078 | if (posd->is_data_size_valid()) | |
2079 | { | |
2080 | off_t offset_in_section = this->current_data_size_for_child(); | |
2081 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
2082 | posd->addralign()); | |
2083 | this->set_current_data_size_for_child(aligned_offset_in_section | |
2084 | + posd->data_size()); | |
2085 | } | |
b8e6aad9 ILT |
2086 | } |
2087 | ||
c0a62865 DK |
2088 | // Add a relaxed input section. |
2089 | ||
2090 | void | |
2091 | Output_section::add_relaxed_input_section(Output_relaxed_input_section* poris) | |
2092 | { | |
2093 | Input_section inp(poris); | |
2094 | this->add_output_section_data(&inp); | |
2095 | if (this->is_relaxed_input_section_map_valid_) | |
2096 | { | |
5ac169d4 DK |
2097 | Const_section_id csid(poris->relobj(), poris->shndx()); |
2098 | this->relaxed_input_section_map_[csid] = poris; | |
c0a62865 DK |
2099 | } |
2100 | ||
2101 | // For a relaxed section, we use the current data size. Linker scripts | |
2102 | // get all the input sections, including relaxed one from an output | |
2103 | // section and add them back to them same output section to compute the | |
2104 | // output section size. If we do not account for sizes of relaxed input | |
2105 | // sections, an output section would be incorrectly sized. | |
2106 | off_t offset_in_section = this->current_data_size_for_child(); | |
2107 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
2108 | poris->addralign()); | |
2109 | this->set_current_data_size_for_child(aligned_offset_in_section | |
2110 | + poris->current_data_size()); | |
2111 | } | |
2112 | ||
b8e6aad9 | 2113 | // Add arbitrary data to an output section by Input_section. |
c06b7b0b | 2114 | |
b8e6aad9 ILT |
2115 | void |
2116 | Output_section::add_output_section_data(Input_section* inp) | |
2117 | { | |
ead1e424 | 2118 | if (this->input_sections_.empty()) |
27bc2bce | 2119 | this->first_input_offset_ = this->current_data_size_for_child(); |
c06b7b0b | 2120 | |
b8e6aad9 | 2121 | this->input_sections_.push_back(*inp); |
c06b7b0b | 2122 | |
2ea97941 ILT |
2123 | uint64_t addralign = inp->addralign(); |
2124 | if (addralign > this->addralign_) | |
2125 | this->addralign_ = addralign; | |
c06b7b0b | 2126 | |
b8e6aad9 ILT |
2127 | inp->set_output_section(this); |
2128 | } | |
2129 | ||
2130 | // Add a merge section to an output section. | |
2131 | ||
2132 | void | |
2133 | Output_section::add_output_merge_section(Output_section_data* posd, | |
2ea97941 | 2134 | bool is_string, uint64_t entsize) |
b8e6aad9 | 2135 | { |
2ea97941 | 2136 | Input_section inp(posd, is_string, entsize); |
b8e6aad9 ILT |
2137 | this->add_output_section_data(&inp); |
2138 | } | |
2139 | ||
2140 | // Add an input section to a SHF_MERGE section. | |
2141 | ||
2142 | bool | |
2ea97941 ILT |
2143 | Output_section::add_merge_input_section(Relobj* object, unsigned int shndx, |
2144 | uint64_t flags, uint64_t entsize, | |
2145 | uint64_t addralign) | |
b8e6aad9 | 2146 | { |
2ea97941 | 2147 | bool is_string = (flags & elfcpp::SHF_STRINGS) != 0; |
87f95776 ILT |
2148 | |
2149 | // We only merge strings if the alignment is not more than the | |
2150 | // character size. This could be handled, but it's unusual. | |
2ea97941 | 2151 | if (is_string && addralign > entsize) |
b8e6aad9 ILT |
2152 | return false; |
2153 | ||
20e6d0d6 DK |
2154 | // We cannot restore merged input section states. |
2155 | gold_assert(this->checkpoint_ == NULL); | |
2156 | ||
c0a62865 | 2157 | // Look up merge sections by required properties. |
6bf924b0 | 2158 | Output_merge_base* pomb; |
2ea97941 | 2159 | Merge_section_properties msp(is_string, entsize, addralign); |
c0a62865 DK |
2160 | Merge_section_by_properties_map::const_iterator p = |
2161 | this->merge_section_by_properties_map_.find(msp); | |
2162 | if (p != this->merge_section_by_properties_map_.end()) | |
2163 | { | |
6bf924b0 DK |
2164 | pomb = p->second; |
2165 | gold_assert(pomb->is_string() == is_string | |
2166 | && pomb->entsize() == entsize | |
2167 | && pomb->addralign() == addralign); | |
c0a62865 | 2168 | } |
b8e6aad9 ILT |
2169 | else |
2170 | { | |
6bf924b0 DK |
2171 | // Create a new Output_merge_data or Output_merge_string_data. |
2172 | if (!is_string) | |
2173 | pomb = new Output_merge_data(entsize, addralign); | |
2174 | else | |
9a0910c3 | 2175 | { |
6bf924b0 DK |
2176 | switch (entsize) |
2177 | { | |
2178 | case 1: | |
2179 | pomb = new Output_merge_string<char>(addralign); | |
2180 | break; | |
2181 | case 2: | |
2182 | pomb = new Output_merge_string<uint16_t>(addralign); | |
2183 | break; | |
2184 | case 4: | |
2185 | pomb = new Output_merge_string<uint32_t>(addralign); | |
2186 | break; | |
2187 | default: | |
2188 | return false; | |
2189 | } | |
9a0910c3 | 2190 | } |
6bf924b0 DK |
2191 | // Add new merge section to this output section and link merge |
2192 | // section properties to new merge section in map. | |
2193 | this->add_output_merge_section(pomb, is_string, entsize); | |
2194 | this->merge_section_by_properties_map_[msp] = pomb; | |
b8e6aad9 ILT |
2195 | } |
2196 | ||
6bf924b0 DK |
2197 | if (pomb->add_input_section(object, shndx)) |
2198 | { | |
2199 | // Add input section to new merge section and link input section to new | |
2200 | // merge section in map. | |
2201 | Const_section_id csid(object, shndx); | |
2202 | this->merge_section_map_[csid] = pomb; | |
2203 | return true; | |
2204 | } | |
2205 | else | |
2206 | return false; | |
b8e6aad9 ILT |
2207 | } |
2208 | ||
c0a62865 | 2209 | // Build a relaxation map to speed up relaxation of existing input sections. |
2ea97941 | 2210 | // Look up to the first LIMIT elements in INPUT_SECTIONS. |
c0a62865 | 2211 | |
20e6d0d6 | 2212 | void |
c0a62865 | 2213 | Output_section::build_relaxation_map( |
2ea97941 | 2214 | const Input_section_list& input_sections, |
c0a62865 DK |
2215 | size_t limit, |
2216 | Relaxation_map* relaxation_map) const | |
20e6d0d6 | 2217 | { |
c0a62865 DK |
2218 | for (size_t i = 0; i < limit; ++i) |
2219 | { | |
2ea97941 | 2220 | const Input_section& is(input_sections[i]); |
c0a62865 DK |
2221 | if (is.is_input_section() || is.is_relaxed_input_section()) |
2222 | { | |
5ac169d4 DK |
2223 | Section_id sid(is.relobj(), is.shndx()); |
2224 | (*relaxation_map)[sid] = i; | |
c0a62865 DK |
2225 | } |
2226 | } | |
2227 | } | |
2228 | ||
2229 | // Convert regular input sections in INPUT_SECTIONS into relaxed input | |
5ac169d4 DK |
2230 | // sections in RELAXED_SECTIONS. MAP is a prebuilt map from section id |
2231 | // indices of INPUT_SECTIONS. | |
20e6d0d6 | 2232 | |
c0a62865 DK |
2233 | void |
2234 | Output_section::convert_input_sections_in_list_to_relaxed_sections( | |
2235 | const std::vector<Output_relaxed_input_section*>& relaxed_sections, | |
2236 | const Relaxation_map& map, | |
2ea97941 | 2237 | Input_section_list* input_sections) |
c0a62865 DK |
2238 | { |
2239 | for (size_t i = 0; i < relaxed_sections.size(); ++i) | |
2240 | { | |
2241 | Output_relaxed_input_section* poris = relaxed_sections[i]; | |
5ac169d4 DK |
2242 | Section_id sid(poris->relobj(), poris->shndx()); |
2243 | Relaxation_map::const_iterator p = map.find(sid); | |
c0a62865 | 2244 | gold_assert(p != map.end()); |
2ea97941 ILT |
2245 | gold_assert((*input_sections)[p->second].is_input_section()); |
2246 | (*input_sections)[p->second] = Input_section(poris); | |
c0a62865 DK |
2247 | } |
2248 | } | |
2249 | ||
2250 | // Convert regular input sections into relaxed input sections. RELAXED_SECTIONS | |
2251 | // is a vector of pointers to Output_relaxed_input_section or its derived | |
2252 | // classes. The relaxed sections must correspond to existing input sections. | |
2253 | ||
2254 | void | |
2255 | Output_section::convert_input_sections_to_relaxed_sections( | |
2256 | const std::vector<Output_relaxed_input_section*>& relaxed_sections) | |
2257 | { | |
029ba973 | 2258 | gold_assert(parameters->target().may_relax()); |
20e6d0d6 | 2259 | |
c0a62865 DK |
2260 | // We want to make sure that restore_states does not undo the effect of |
2261 | // this. If there is no checkpoint active, just search the current | |
2262 | // input section list and replace the sections there. If there is | |
2263 | // a checkpoint, also replace the sections there. | |
2264 | ||
2265 | // By default, we look at the whole list. | |
2266 | size_t limit = this->input_sections_.size(); | |
2267 | ||
2268 | if (this->checkpoint_ != NULL) | |
20e6d0d6 | 2269 | { |
c0a62865 DK |
2270 | // Replace input sections with relaxed input section in the saved |
2271 | // copy of the input section list. | |
2272 | if (this->checkpoint_->input_sections_saved()) | |
20e6d0d6 | 2273 | { |
c0a62865 DK |
2274 | Relaxation_map map; |
2275 | this->build_relaxation_map( | |
2276 | *(this->checkpoint_->input_sections()), | |
2277 | this->checkpoint_->input_sections()->size(), | |
2278 | &map); | |
2279 | this->convert_input_sections_in_list_to_relaxed_sections( | |
2280 | relaxed_sections, | |
2281 | map, | |
2282 | this->checkpoint_->input_sections()); | |
2283 | } | |
2284 | else | |
2285 | { | |
2286 | // We have not copied the input section list yet. Instead, just | |
2287 | // look at the portion that would be saved. | |
2288 | limit = this->checkpoint_->input_sections_size(); | |
20e6d0d6 | 2289 | } |
20e6d0d6 | 2290 | } |
c0a62865 DK |
2291 | |
2292 | // Convert input sections in input_section_list. | |
2293 | Relaxation_map map; | |
2294 | this->build_relaxation_map(this->input_sections_, limit, &map); | |
2295 | this->convert_input_sections_in_list_to_relaxed_sections( | |
2296 | relaxed_sections, | |
2297 | map, | |
2298 | &this->input_sections_); | |
41263c05 DK |
2299 | |
2300 | // Update fast look-up map. | |
2301 | if (this->is_relaxed_input_section_map_valid_) | |
2302 | for (size_t i = 0; i < relaxed_sections.size(); ++i) | |
2303 | { | |
2304 | Output_relaxed_input_section* poris = relaxed_sections[i]; | |
5ac169d4 DK |
2305 | Const_section_id csid(poris->relobj(), poris->shndx()); |
2306 | this->relaxed_input_section_map_[csid] = poris; | |
41263c05 | 2307 | } |
20e6d0d6 DK |
2308 | } |
2309 | ||
9c547ec3 ILT |
2310 | // Update the output section flags based on input section flags. |
2311 | ||
2312 | void | |
2ea97941 | 2313 | Output_section::update_flags_for_input_section(elfcpp::Elf_Xword flags) |
9c547ec3 ILT |
2314 | { |
2315 | // If we created the section with SHF_ALLOC clear, we set the | |
2316 | // address. If we are now setting the SHF_ALLOC flag, we need to | |
2317 | // undo that. | |
2318 | if ((this->flags_ & elfcpp::SHF_ALLOC) == 0 | |
2ea97941 | 2319 | && (flags & elfcpp::SHF_ALLOC) != 0) |
9c547ec3 ILT |
2320 | this->mark_address_invalid(); |
2321 | ||
2ea97941 | 2322 | this->flags_ |= (flags |
9c547ec3 ILT |
2323 | & (elfcpp::SHF_WRITE |
2324 | | elfcpp::SHF_ALLOC | |
2325 | | elfcpp::SHF_EXECINSTR)); | |
e8cd95c7 ILT |
2326 | |
2327 | if ((flags & elfcpp::SHF_MERGE) == 0) | |
2328 | this->flags_ &=~ elfcpp::SHF_MERGE; | |
2329 | else | |
2330 | { | |
2331 | if (this->current_data_size_for_child() == 0) | |
2332 | this->flags_ |= elfcpp::SHF_MERGE; | |
2333 | } | |
2334 | ||
2335 | if ((flags & elfcpp::SHF_STRINGS) == 0) | |
2336 | this->flags_ &=~ elfcpp::SHF_STRINGS; | |
2337 | else | |
2338 | { | |
2339 | if (this->current_data_size_for_child() == 0) | |
2340 | this->flags_ |= elfcpp::SHF_STRINGS; | |
2341 | } | |
9c547ec3 ILT |
2342 | } |
2343 | ||
2ea97941 | 2344 | // Find the merge section into which an input section with index SHNDX in |
c0a62865 DK |
2345 | // OBJECT has been added. Return NULL if none found. |
2346 | ||
2347 | Output_section_data* | |
2348 | Output_section::find_merge_section(const Relobj* object, | |
2ea97941 | 2349 | unsigned int shndx) const |
c0a62865 | 2350 | { |
5ac169d4 | 2351 | Const_section_id csid(object, shndx); |
c0a62865 | 2352 | Output_section_data_by_input_section_map::const_iterator p = |
5ac169d4 | 2353 | this->merge_section_map_.find(csid); |
c0a62865 DK |
2354 | if (p != this->merge_section_map_.end()) |
2355 | { | |
2356 | Output_section_data* posd = p->second; | |
2ea97941 | 2357 | gold_assert(posd->is_merge_section_for(object, shndx)); |
c0a62865 DK |
2358 | return posd; |
2359 | } | |
2360 | else | |
2361 | return NULL; | |
2362 | } | |
2363 | ||
2364 | // Find an relaxed input section corresponding to an input section | |
2ea97941 | 2365 | // in OBJECT with index SHNDX. |
c0a62865 | 2366 | |
d6344fb5 | 2367 | const Output_relaxed_input_section* |
c0a62865 | 2368 | Output_section::find_relaxed_input_section(const Relobj* object, |
2ea97941 | 2369 | unsigned int shndx) const |
c0a62865 DK |
2370 | { |
2371 | // Be careful that the map may not be valid due to input section export | |
2372 | // to scripts or a check-point restore. | |
2373 | if (!this->is_relaxed_input_section_map_valid_) | |
2374 | { | |
2375 | // Rebuild the map as needed. | |
2376 | this->relaxed_input_section_map_.clear(); | |
2377 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
2378 | p != this->input_sections_.end(); | |
2379 | ++p) | |
2380 | if (p->is_relaxed_input_section()) | |
2381 | { | |
5ac169d4 DK |
2382 | Const_section_id csid(p->relobj(), p->shndx()); |
2383 | this->relaxed_input_section_map_[csid] = | |
c0a62865 DK |
2384 | p->relaxed_input_section(); |
2385 | } | |
2386 | this->is_relaxed_input_section_map_valid_ = true; | |
2387 | } | |
2388 | ||
5ac169d4 | 2389 | Const_section_id csid(object, shndx); |
d6344fb5 | 2390 | Output_relaxed_input_section_by_input_section_map::const_iterator p = |
5ac169d4 | 2391 | this->relaxed_input_section_map_.find(csid); |
c0a62865 DK |
2392 | if (p != this->relaxed_input_section_map_.end()) |
2393 | return p->second; | |
2394 | else | |
2395 | return NULL; | |
2396 | } | |
2397 | ||
2ea97941 ILT |
2398 | // Given an address OFFSET relative to the start of input section |
2399 | // SHNDX in OBJECT, return whether this address is being included in | |
2400 | // the final link. This should only be called if SHNDX in OBJECT has | |
730cdc88 ILT |
2401 | // a special mapping. |
2402 | ||
2403 | bool | |
2404 | Output_section::is_input_address_mapped(const Relobj* object, | |
2ea97941 ILT |
2405 | unsigned int shndx, |
2406 | off_t offset) const | |
730cdc88 | 2407 | { |
c0a62865 | 2408 | // Look at the Output_section_data_maps first. |
2ea97941 | 2409 | const Output_section_data* posd = this->find_merge_section(object, shndx); |
c0a62865 | 2410 | if (posd == NULL) |
2ea97941 | 2411 | posd = this->find_relaxed_input_section(object, shndx); |
c0a62865 DK |
2412 | |
2413 | if (posd != NULL) | |
2414 | { | |
2ea97941 ILT |
2415 | section_offset_type output_offset; |
2416 | bool found = posd->output_offset(object, shndx, offset, &output_offset); | |
c0a62865 | 2417 | gold_assert(found); |
2ea97941 | 2418 | return output_offset != -1; |
c0a62865 DK |
2419 | } |
2420 | ||
2421 | // Fall back to the slow look-up. | |
730cdc88 ILT |
2422 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); |
2423 | p != this->input_sections_.end(); | |
2424 | ++p) | |
2425 | { | |
2ea97941 ILT |
2426 | section_offset_type output_offset; |
2427 | if (p->output_offset(object, shndx, offset, &output_offset)) | |
2428 | return output_offset != -1; | |
730cdc88 ILT |
2429 | } |
2430 | ||
2431 | // By default we assume that the address is mapped. This should | |
2432 | // only be called after we have passed all sections to Layout. At | |
2433 | // that point we should know what we are discarding. | |
2434 | return true; | |
2435 | } | |
2436 | ||
2ea97941 ILT |
2437 | // Given an address OFFSET relative to the start of input section |
2438 | // SHNDX in object OBJECT, return the output offset relative to the | |
1e983657 | 2439 | // start of the input section in the output section. This should only |
2ea97941 | 2440 | // be called if SHNDX in OBJECT has a special mapping. |
730cdc88 | 2441 | |
8383303e | 2442 | section_offset_type |
2ea97941 ILT |
2443 | Output_section::output_offset(const Relobj* object, unsigned int shndx, |
2444 | section_offset_type offset) const | |
730cdc88 | 2445 | { |
c0a62865 DK |
2446 | // This can only be called meaningfully when we know the data size |
2447 | // of this. | |
2448 | gold_assert(this->is_data_size_valid()); | |
730cdc88 | 2449 | |
c0a62865 | 2450 | // Look at the Output_section_data_maps first. |
2ea97941 | 2451 | const Output_section_data* posd = this->find_merge_section(object, shndx); |
c0a62865 | 2452 | if (posd == NULL) |
2ea97941 | 2453 | posd = this->find_relaxed_input_section(object, shndx); |
c0a62865 DK |
2454 | if (posd != NULL) |
2455 | { | |
2ea97941 ILT |
2456 | section_offset_type output_offset; |
2457 | bool found = posd->output_offset(object, shndx, offset, &output_offset); | |
c0a62865 | 2458 | gold_assert(found); |
2ea97941 | 2459 | return output_offset; |
c0a62865 DK |
2460 | } |
2461 | ||
2462 | // Fall back to the slow look-up. | |
730cdc88 ILT |
2463 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); |
2464 | p != this->input_sections_.end(); | |
2465 | ++p) | |
2466 | { | |
2ea97941 ILT |
2467 | section_offset_type output_offset; |
2468 | if (p->output_offset(object, shndx, offset, &output_offset)) | |
2469 | return output_offset; | |
730cdc88 ILT |
2470 | } |
2471 | gold_unreachable(); | |
2472 | } | |
2473 | ||
2ea97941 ILT |
2474 | // Return the output virtual address of OFFSET relative to the start |
2475 | // of input section SHNDX in object OBJECT. | |
b8e6aad9 ILT |
2476 | |
2477 | uint64_t | |
2ea97941 ILT |
2478 | Output_section::output_address(const Relobj* object, unsigned int shndx, |
2479 | off_t offset) const | |
b8e6aad9 ILT |
2480 | { |
2481 | uint64_t addr = this->address() + this->first_input_offset_; | |
c0a62865 DK |
2482 | |
2483 | // Look at the Output_section_data_maps first. | |
2ea97941 | 2484 | const Output_section_data* posd = this->find_merge_section(object, shndx); |
c0a62865 | 2485 | if (posd == NULL) |
2ea97941 | 2486 | posd = this->find_relaxed_input_section(object, shndx); |
c0a62865 DK |
2487 | if (posd != NULL && posd->is_address_valid()) |
2488 | { | |
2ea97941 ILT |
2489 | section_offset_type output_offset; |
2490 | bool found = posd->output_offset(object, shndx, offset, &output_offset); | |
c0a62865 | 2491 | gold_assert(found); |
2ea97941 | 2492 | return posd->address() + output_offset; |
c0a62865 DK |
2493 | } |
2494 | ||
2495 | // Fall back to the slow look-up. | |
b8e6aad9 ILT |
2496 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); |
2497 | p != this->input_sections_.end(); | |
2498 | ++p) | |
2499 | { | |
2500 | addr = align_address(addr, p->addralign()); | |
2ea97941 ILT |
2501 | section_offset_type output_offset; |
2502 | if (p->output_offset(object, shndx, offset, &output_offset)) | |
730cdc88 | 2503 | { |
2ea97941 | 2504 | if (output_offset == -1) |
eff45813 | 2505 | return -1ULL; |
2ea97941 | 2506 | return addr + output_offset; |
730cdc88 | 2507 | } |
b8e6aad9 ILT |
2508 | addr += p->data_size(); |
2509 | } | |
2510 | ||
2511 | // If we get here, it means that we don't know the mapping for this | |
2512 | // input section. This might happen in principle if | |
2513 | // add_input_section were called before add_output_section_data. | |
2514 | // But it should never actually happen. | |
2515 | ||
2516 | gold_unreachable(); | |
ead1e424 ILT |
2517 | } |
2518 | ||
e29e076a | 2519 | // Find the output address of the start of the merged section for |
2ea97941 | 2520 | // input section SHNDX in object OBJECT. |
a9a60db6 | 2521 | |
e29e076a ILT |
2522 | bool |
2523 | Output_section::find_starting_output_address(const Relobj* object, | |
2ea97941 | 2524 | unsigned int shndx, |
e29e076a | 2525 | uint64_t* paddr) const |
a9a60db6 | 2526 | { |
c0a62865 DK |
2527 | // FIXME: This becomes a bottle-neck if we have many relaxed sections. |
2528 | // Looking up the merge section map does not always work as we sometimes | |
2529 | // find a merge section without its address set. | |
a9a60db6 ILT |
2530 | uint64_t addr = this->address() + this->first_input_offset_; |
2531 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
2532 | p != this->input_sections_.end(); | |
2533 | ++p) | |
2534 | { | |
2535 | addr = align_address(addr, p->addralign()); | |
2536 | ||
2537 | // It would be nice if we could use the existing output_offset | |
2538 | // method to get the output offset of input offset 0. | |
2539 | // Unfortunately we don't know for sure that input offset 0 is | |
2540 | // mapped at all. | |
2ea97941 | 2541 | if (p->is_merge_section_for(object, shndx)) |
e29e076a ILT |
2542 | { |
2543 | *paddr = addr; | |
2544 | return true; | |
2545 | } | |
a9a60db6 ILT |
2546 | |
2547 | addr += p->data_size(); | |
2548 | } | |
e29e076a ILT |
2549 | |
2550 | // We couldn't find a merge output section for this input section. | |
2551 | return false; | |
a9a60db6 ILT |
2552 | } |
2553 | ||
27bc2bce | 2554 | // Set the data size of an Output_section. This is where we handle |
ead1e424 ILT |
2555 | // setting the addresses of any Output_section_data objects. |
2556 | ||
2557 | void | |
27bc2bce | 2558 | Output_section::set_final_data_size() |
ead1e424 ILT |
2559 | { |
2560 | if (this->input_sections_.empty()) | |
27bc2bce ILT |
2561 | { |
2562 | this->set_data_size(this->current_data_size_for_child()); | |
2563 | return; | |
2564 | } | |
ead1e424 | 2565 | |
2fd32231 ILT |
2566 | if (this->must_sort_attached_input_sections()) |
2567 | this->sort_attached_input_sections(); | |
2568 | ||
2ea97941 | 2569 | uint64_t address = this->address(); |
27bc2bce | 2570 | off_t startoff = this->offset(); |
ead1e424 ILT |
2571 | off_t off = startoff + this->first_input_offset_; |
2572 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2573 | p != this->input_sections_.end(); | |
2574 | ++p) | |
2575 | { | |
2576 | off = align_address(off, p->addralign()); | |
2ea97941 | 2577 | p->set_address_and_file_offset(address + (off - startoff), off, |
96803768 | 2578 | startoff); |
ead1e424 ILT |
2579 | off += p->data_size(); |
2580 | } | |
2581 | ||
2582 | this->set_data_size(off - startoff); | |
2583 | } | |
9a0910c3 | 2584 | |
a445fddf ILT |
2585 | // Reset the address and file offset. |
2586 | ||
2587 | void | |
2588 | Output_section::do_reset_address_and_file_offset() | |
2589 | { | |
20e6d0d6 DK |
2590 | // An unallocated section has no address. Forcing this means that |
2591 | // we don't need special treatment for symbols defined in debug | |
1e5d2fb1 DK |
2592 | // sections. We do the same in the constructor. This does not |
2593 | // apply to NOLOAD sections though. | |
2594 | if (((this->flags_ & elfcpp::SHF_ALLOC) == 0) && !this->is_noload_) | |
20e6d0d6 DK |
2595 | this->set_address(0); |
2596 | ||
a445fddf ILT |
2597 | for (Input_section_list::iterator p = this->input_sections_.begin(); |
2598 | p != this->input_sections_.end(); | |
2599 | ++p) | |
2600 | p->reset_address_and_file_offset(); | |
2601 | } | |
20e6d0d6 DK |
2602 | |
2603 | // Return true if address and file offset have the values after reset. | |
2604 | ||
2605 | bool | |
2606 | Output_section::do_address_and_file_offset_have_reset_values() const | |
2607 | { | |
2608 | if (this->is_offset_valid()) | |
2609 | return false; | |
2610 | ||
2611 | // An unallocated section has address 0 after its construction or a reset. | |
2612 | if ((this->flags_ & elfcpp::SHF_ALLOC) == 0) | |
2613 | return this->is_address_valid() && this->address() == 0; | |
2614 | else | |
2615 | return !this->is_address_valid(); | |
2616 | } | |
a445fddf | 2617 | |
7bf1f802 ILT |
2618 | // Set the TLS offset. Called only for SHT_TLS sections. |
2619 | ||
2620 | void | |
2621 | Output_section::do_set_tls_offset(uint64_t tls_base) | |
2622 | { | |
2623 | this->tls_offset_ = this->address() - tls_base; | |
2624 | } | |
2625 | ||
2fd32231 ILT |
2626 | // In a few cases we need to sort the input sections attached to an |
2627 | // output section. This is used to implement the type of constructor | |
2628 | // priority ordering implemented by the GNU linker, in which the | |
2629 | // priority becomes part of the section name and the sections are | |
2630 | // sorted by name. We only do this for an output section if we see an | |
2631 | // attached input section matching ".ctor.*", ".dtor.*", | |
2632 | // ".init_array.*" or ".fini_array.*". | |
2633 | ||
2634 | class Output_section::Input_section_sort_entry | |
2635 | { | |
2636 | public: | |
2637 | Input_section_sort_entry() | |
2638 | : input_section_(), index_(-1U), section_has_name_(false), | |
2639 | section_name_() | |
2640 | { } | |
2641 | ||
2ea97941 ILT |
2642 | Input_section_sort_entry(const Input_section& input_section, |
2643 | unsigned int index) | |
2644 | : input_section_(input_section), index_(index), | |
2645 | section_has_name_(input_section.is_input_section() | |
2646 | || input_section.is_relaxed_input_section()) | |
2fd32231 ILT |
2647 | { |
2648 | if (this->section_has_name_) | |
2649 | { | |
2650 | // This is only called single-threaded from Layout::finalize, | |
2651 | // so it is OK to lock. Unfortunately we have no way to pass | |
2652 | // in a Task token. | |
2653 | const Task* dummy_task = reinterpret_cast<const Task*>(-1); | |
2ea97941 ILT |
2654 | Object* obj = (input_section.is_input_section() |
2655 | ? input_section.relobj() | |
2656 | : input_section.relaxed_input_section()->relobj()); | |
2fd32231 ILT |
2657 | Task_lock_obj<Object> tl(dummy_task, obj); |
2658 | ||
2659 | // This is a slow operation, which should be cached in | |
2660 | // Layout::layout if this becomes a speed problem. | |
2ea97941 | 2661 | this->section_name_ = obj->section_name(input_section.shndx()); |
2fd32231 ILT |
2662 | } |
2663 | } | |
2664 | ||
2665 | // Return the Input_section. | |
2666 | const Input_section& | |
2667 | input_section() const | |
2668 | { | |
2669 | gold_assert(this->index_ != -1U); | |
2670 | return this->input_section_; | |
2671 | } | |
2672 | ||
2673 | // The index of this entry in the original list. This is used to | |
2674 | // make the sort stable. | |
2675 | unsigned int | |
2676 | index() const | |
2677 | { | |
2678 | gold_assert(this->index_ != -1U); | |
2679 | return this->index_; | |
2680 | } | |
2681 | ||
2682 | // Whether there is a section name. | |
2683 | bool | |
2684 | section_has_name() const | |
2685 | { return this->section_has_name_; } | |
2686 | ||
2687 | // The section name. | |
2688 | const std::string& | |
2689 | section_name() const | |
2690 | { | |
2691 | gold_assert(this->section_has_name_); | |
2692 | return this->section_name_; | |
2693 | } | |
2694 | ||
ab794b6b ILT |
2695 | // Return true if the section name has a priority. This is assumed |
2696 | // to be true if it has a dot after the initial dot. | |
2fd32231 | 2697 | bool |
ab794b6b | 2698 | has_priority() const |
2fd32231 ILT |
2699 | { |
2700 | gold_assert(this->section_has_name_); | |
2a0ff005 | 2701 | return this->section_name_.find('.', 1) != std::string::npos; |
2fd32231 ILT |
2702 | } |
2703 | ||
ab794b6b ILT |
2704 | // Return true if this an input file whose base name matches |
2705 | // FILE_NAME. The base name must have an extension of ".o", and | |
2706 | // must be exactly FILE_NAME.o or FILE_NAME, one character, ".o". | |
2707 | // This is to match crtbegin.o as well as crtbeginS.o without | |
2708 | // getting confused by other possibilities. Overall matching the | |
2709 | // file name this way is a dreadful hack, but the GNU linker does it | |
2710 | // in order to better support gcc, and we need to be compatible. | |
2fd32231 | 2711 | bool |
2ea97941 | 2712 | match_file_name(const char* match_file_name) const |
2fd32231 | 2713 | { |
2fd32231 ILT |
2714 | const std::string& file_name(this->input_section_.relobj()->name()); |
2715 | const char* base_name = lbasename(file_name.c_str()); | |
2ea97941 ILT |
2716 | size_t match_len = strlen(match_file_name); |
2717 | if (strncmp(base_name, match_file_name, match_len) != 0) | |
2fd32231 ILT |
2718 | return false; |
2719 | size_t base_len = strlen(base_name); | |
2720 | if (base_len != match_len + 2 && base_len != match_len + 3) | |
2721 | return false; | |
2722 | return memcmp(base_name + base_len - 2, ".o", 2) == 0; | |
2723 | } | |
2724 | ||
2725 | private: | |
2726 | // The Input_section we are sorting. | |
2727 | Input_section input_section_; | |
2728 | // The index of this Input_section in the original list. | |
2729 | unsigned int index_; | |
2730 | // Whether this Input_section has a section name--it won't if this | |
2731 | // is some random Output_section_data. | |
2732 | bool section_has_name_; | |
2733 | // The section name if there is one. | |
2734 | std::string section_name_; | |
2735 | }; | |
2736 | ||
2737 | // Return true if S1 should come before S2 in the output section. | |
2738 | ||
2739 | bool | |
2740 | Output_section::Input_section_sort_compare::operator()( | |
2741 | const Output_section::Input_section_sort_entry& s1, | |
2742 | const Output_section::Input_section_sort_entry& s2) const | |
2743 | { | |
ab794b6b ILT |
2744 | // crtbegin.o must come first. |
2745 | bool s1_begin = s1.match_file_name("crtbegin"); | |
2746 | bool s2_begin = s2.match_file_name("crtbegin"); | |
2fd32231 ILT |
2747 | if (s1_begin || s2_begin) |
2748 | { | |
2749 | if (!s1_begin) | |
2750 | return false; | |
2751 | if (!s2_begin) | |
2752 | return true; | |
2753 | return s1.index() < s2.index(); | |
2754 | } | |
2755 | ||
ab794b6b ILT |
2756 | // crtend.o must come last. |
2757 | bool s1_end = s1.match_file_name("crtend"); | |
2758 | bool s2_end = s2.match_file_name("crtend"); | |
2fd32231 ILT |
2759 | if (s1_end || s2_end) |
2760 | { | |
2761 | if (!s1_end) | |
2762 | return true; | |
2763 | if (!s2_end) | |
2764 | return false; | |
2765 | return s1.index() < s2.index(); | |
2766 | } | |
2767 | ||
ab794b6b ILT |
2768 | // We sort all the sections with no names to the end. |
2769 | if (!s1.section_has_name() || !s2.section_has_name()) | |
2770 | { | |
2771 | if (s1.section_has_name()) | |
2772 | return true; | |
2773 | if (s2.section_has_name()) | |
2774 | return false; | |
2775 | return s1.index() < s2.index(); | |
2776 | } | |
2fd32231 | 2777 | |
ab794b6b | 2778 | // A section with a priority follows a section without a priority. |
ab794b6b ILT |
2779 | bool s1_has_priority = s1.has_priority(); |
2780 | bool s2_has_priority = s2.has_priority(); | |
2781 | if (s1_has_priority && !s2_has_priority) | |
2fd32231 | 2782 | return false; |
ab794b6b | 2783 | if (!s1_has_priority && s2_has_priority) |
2fd32231 ILT |
2784 | return true; |
2785 | ||
2786 | // Otherwise we sort by name. | |
2787 | int compare = s1.section_name().compare(s2.section_name()); | |
2788 | if (compare != 0) | |
2789 | return compare < 0; | |
2790 | ||
2791 | // Otherwise we keep the input order. | |
2792 | return s1.index() < s2.index(); | |
2793 | } | |
2794 | ||
2a0ff005 DK |
2795 | // Return true if S1 should come before S2 in an .init_array or .fini_array |
2796 | // output section. | |
2797 | ||
2798 | bool | |
2799 | Output_section::Input_section_sort_init_fini_compare::operator()( | |
2800 | const Output_section::Input_section_sort_entry& s1, | |
2801 | const Output_section::Input_section_sort_entry& s2) const | |
2802 | { | |
2803 | // We sort all the sections with no names to the end. | |
2804 | if (!s1.section_has_name() || !s2.section_has_name()) | |
2805 | { | |
2806 | if (s1.section_has_name()) | |
2807 | return true; | |
2808 | if (s2.section_has_name()) | |
2809 | return false; | |
2810 | return s1.index() < s2.index(); | |
2811 | } | |
2812 | ||
2813 | // A section without a priority follows a section with a priority. | |
2814 | // This is the reverse of .ctors and .dtors sections. | |
2815 | bool s1_has_priority = s1.has_priority(); | |
2816 | bool s2_has_priority = s2.has_priority(); | |
2817 | if (s1_has_priority && !s2_has_priority) | |
2818 | return true; | |
2819 | if (!s1_has_priority && s2_has_priority) | |
2820 | return false; | |
2821 | ||
2822 | // Otherwise we sort by name. | |
2823 | int compare = s1.section_name().compare(s2.section_name()); | |
2824 | if (compare != 0) | |
2825 | return compare < 0; | |
2826 | ||
2827 | // Otherwise we keep the input order. | |
2828 | return s1.index() < s2.index(); | |
2829 | } | |
2830 | ||
2fd32231 ILT |
2831 | // Sort the input sections attached to an output section. |
2832 | ||
2833 | void | |
2834 | Output_section::sort_attached_input_sections() | |
2835 | { | |
2836 | if (this->attached_input_sections_are_sorted_) | |
2837 | return; | |
2838 | ||
20e6d0d6 DK |
2839 | if (this->checkpoint_ != NULL |
2840 | && !this->checkpoint_->input_sections_saved()) | |
2841 | this->checkpoint_->save_input_sections(); | |
2842 | ||
2fd32231 ILT |
2843 | // The only thing we know about an input section is the object and |
2844 | // the section index. We need the section name. Recomputing this | |
2845 | // is slow but this is an unusual case. If this becomes a speed | |
2846 | // problem we can cache the names as required in Layout::layout. | |
2847 | ||
2848 | // We start by building a larger vector holding a copy of each | |
2849 | // Input_section, plus its current index in the list and its name. | |
2850 | std::vector<Input_section_sort_entry> sort_list; | |
2851 | ||
2852 | unsigned int i = 0; | |
2853 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2854 | p != this->input_sections_.end(); | |
2855 | ++p, ++i) | |
2856 | sort_list.push_back(Input_section_sort_entry(*p, i)); | |
2857 | ||
2858 | // Sort the input sections. | |
2a0ff005 DK |
2859 | if (this->type() == elfcpp::SHT_PREINIT_ARRAY |
2860 | || this->type() == elfcpp::SHT_INIT_ARRAY | |
2861 | || this->type() == elfcpp::SHT_FINI_ARRAY) | |
2862 | std::sort(sort_list.begin(), sort_list.end(), | |
2863 | Input_section_sort_init_fini_compare()); | |
2864 | else | |
2865 | std::sort(sort_list.begin(), sort_list.end(), | |
2866 | Input_section_sort_compare()); | |
2fd32231 ILT |
2867 | |
2868 | // Copy the sorted input sections back to our list. | |
2869 | this->input_sections_.clear(); | |
2870 | for (std::vector<Input_section_sort_entry>::iterator p = sort_list.begin(); | |
2871 | p != sort_list.end(); | |
2872 | ++p) | |
2873 | this->input_sections_.push_back(p->input_section()); | |
2874 | ||
2875 | // Remember that we sorted the input sections, since we might get | |
2876 | // called again. | |
2877 | this->attached_input_sections_are_sorted_ = true; | |
2878 | } | |
2879 | ||
61ba1cf9 ILT |
2880 | // Write the section header to *OSHDR. |
2881 | ||
2882 | template<int size, bool big_endian> | |
2883 | void | |
16649710 ILT |
2884 | Output_section::write_header(const Layout* layout, |
2885 | const Stringpool* secnamepool, | |
61ba1cf9 ILT |
2886 | elfcpp::Shdr_write<size, big_endian>* oshdr) const |
2887 | { | |
2888 | oshdr->put_sh_name(secnamepool->get_offset(this->name_)); | |
2889 | oshdr->put_sh_type(this->type_); | |
6a74a719 | 2890 | |
2ea97941 | 2891 | elfcpp::Elf_Xword flags = this->flags_; |
755ab8af | 2892 | if (this->info_section_ != NULL && this->info_uses_section_index_) |
2ea97941 ILT |
2893 | flags |= elfcpp::SHF_INFO_LINK; |
2894 | oshdr->put_sh_flags(flags); | |
6a74a719 | 2895 | |
61ba1cf9 ILT |
2896 | oshdr->put_sh_addr(this->address()); |
2897 | oshdr->put_sh_offset(this->offset()); | |
2898 | oshdr->put_sh_size(this->data_size()); | |
16649710 ILT |
2899 | if (this->link_section_ != NULL) |
2900 | oshdr->put_sh_link(this->link_section_->out_shndx()); | |
2901 | else if (this->should_link_to_symtab_) | |
2902 | oshdr->put_sh_link(layout->symtab_section()->out_shndx()); | |
2903 | else if (this->should_link_to_dynsym_) | |
2904 | oshdr->put_sh_link(layout->dynsym_section()->out_shndx()); | |
2905 | else | |
2906 | oshdr->put_sh_link(this->link_); | |
755ab8af | 2907 | |
2ea97941 | 2908 | elfcpp::Elf_Word info; |
16649710 | 2909 | if (this->info_section_ != NULL) |
755ab8af ILT |
2910 | { |
2911 | if (this->info_uses_section_index_) | |
2ea97941 | 2912 | info = this->info_section_->out_shndx(); |
755ab8af | 2913 | else |
2ea97941 | 2914 | info = this->info_section_->symtab_index(); |
755ab8af | 2915 | } |
6a74a719 | 2916 | else if (this->info_symndx_ != NULL) |
2ea97941 | 2917 | info = this->info_symndx_->symtab_index(); |
16649710 | 2918 | else |
2ea97941 ILT |
2919 | info = this->info_; |
2920 | oshdr->put_sh_info(info); | |
755ab8af | 2921 | |
61ba1cf9 ILT |
2922 | oshdr->put_sh_addralign(this->addralign_); |
2923 | oshdr->put_sh_entsize(this->entsize_); | |
a2fb1b05 ILT |
2924 | } |
2925 | ||
ead1e424 ILT |
2926 | // Write out the data. For input sections the data is written out by |
2927 | // Object::relocate, but we have to handle Output_section_data objects | |
2928 | // here. | |
2929 | ||
2930 | void | |
2931 | Output_section::do_write(Output_file* of) | |
2932 | { | |
96803768 ILT |
2933 | gold_assert(!this->requires_postprocessing()); |
2934 | ||
c0a62865 DK |
2935 | // If the target performs relaxation, we delay filler generation until now. |
2936 | gold_assert(!this->generate_code_fills_at_write_ || this->fills_.empty()); | |
2937 | ||
c51e6221 ILT |
2938 | off_t output_section_file_offset = this->offset(); |
2939 | for (Fill_list::iterator p = this->fills_.begin(); | |
2940 | p != this->fills_.end(); | |
2941 | ++p) | |
2942 | { | |
8851ecca | 2943 | std::string fill_data(parameters->target().code_fill(p->length())); |
c51e6221 | 2944 | of->write(output_section_file_offset + p->section_offset(), |
a445fddf | 2945 | fill_data.data(), fill_data.size()); |
c51e6221 ILT |
2946 | } |
2947 | ||
c0a62865 | 2948 | off_t off = this->offset() + this->first_input_offset_; |
ead1e424 ILT |
2949 | for (Input_section_list::iterator p = this->input_sections_.begin(); |
2950 | p != this->input_sections_.end(); | |
2951 | ++p) | |
c0a62865 DK |
2952 | { |
2953 | off_t aligned_off = align_address(off, p->addralign()); | |
2954 | if (this->generate_code_fills_at_write_ && (off != aligned_off)) | |
2955 | { | |
2956 | size_t fill_len = aligned_off - off; | |
2957 | std::string fill_data(parameters->target().code_fill(fill_len)); | |
2958 | of->write(off, fill_data.data(), fill_data.size()); | |
2959 | } | |
2960 | ||
2961 | p->write(of); | |
2962 | off = aligned_off + p->data_size(); | |
2963 | } | |
ead1e424 ILT |
2964 | } |
2965 | ||
96803768 ILT |
2966 | // If a section requires postprocessing, create the buffer to use. |
2967 | ||
2968 | void | |
2969 | Output_section::create_postprocessing_buffer() | |
2970 | { | |
2971 | gold_assert(this->requires_postprocessing()); | |
1bedcac5 ILT |
2972 | |
2973 | if (this->postprocessing_buffer_ != NULL) | |
2974 | return; | |
96803768 ILT |
2975 | |
2976 | if (!this->input_sections_.empty()) | |
2977 | { | |
2978 | off_t off = this->first_input_offset_; | |
2979 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
2980 | p != this->input_sections_.end(); | |
2981 | ++p) | |
2982 | { | |
2983 | off = align_address(off, p->addralign()); | |
2984 | p->finalize_data_size(); | |
2985 | off += p->data_size(); | |
2986 | } | |
2987 | this->set_current_data_size_for_child(off); | |
2988 | } | |
2989 | ||
2990 | off_t buffer_size = this->current_data_size_for_child(); | |
2991 | this->postprocessing_buffer_ = new unsigned char[buffer_size]; | |
2992 | } | |
2993 | ||
2994 | // Write all the data of an Output_section into the postprocessing | |
2995 | // buffer. This is used for sections which require postprocessing, | |
2996 | // such as compression. Input sections are handled by | |
2997 | // Object::Relocate. | |
2998 | ||
2999 | void | |
3000 | Output_section::write_to_postprocessing_buffer() | |
3001 | { | |
3002 | gold_assert(this->requires_postprocessing()); | |
3003 | ||
c0a62865 DK |
3004 | // If the target performs relaxation, we delay filler generation until now. |
3005 | gold_assert(!this->generate_code_fills_at_write_ || this->fills_.empty()); | |
3006 | ||
96803768 ILT |
3007 | unsigned char* buffer = this->postprocessing_buffer(); |
3008 | for (Fill_list::iterator p = this->fills_.begin(); | |
3009 | p != this->fills_.end(); | |
3010 | ++p) | |
3011 | { | |
8851ecca | 3012 | std::string fill_data(parameters->target().code_fill(p->length())); |
a445fddf ILT |
3013 | memcpy(buffer + p->section_offset(), fill_data.data(), |
3014 | fill_data.size()); | |
96803768 ILT |
3015 | } |
3016 | ||
3017 | off_t off = this->first_input_offset_; | |
3018 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
3019 | p != this->input_sections_.end(); | |
3020 | ++p) | |
3021 | { | |
c0a62865 DK |
3022 | off_t aligned_off = align_address(off, p->addralign()); |
3023 | if (this->generate_code_fills_at_write_ && (off != aligned_off)) | |
3024 | { | |
3025 | size_t fill_len = aligned_off - off; | |
3026 | std::string fill_data(parameters->target().code_fill(fill_len)); | |
3027 | memcpy(buffer + off, fill_data.data(), fill_data.size()); | |
3028 | } | |
3029 | ||
3030 | p->write_to_buffer(buffer + aligned_off); | |
3031 | off = aligned_off + p->data_size(); | |
96803768 ILT |
3032 | } |
3033 | } | |
3034 | ||
a445fddf ILT |
3035 | // Get the input sections for linker script processing. We leave |
3036 | // behind the Output_section_data entries. Note that this may be | |
3037 | // slightly incorrect for merge sections. We will leave them behind, | |
3038 | // but it is possible that the script says that they should follow | |
3039 | // some other input sections, as in: | |
3040 | // .rodata { *(.rodata) *(.rodata.cst*) } | |
3041 | // For that matter, we don't handle this correctly: | |
3042 | // .rodata { foo.o(.rodata.cst*) *(.rodata.cst*) } | |
3043 | // With luck this will never matter. | |
3044 | ||
3045 | uint64_t | |
3046 | Output_section::get_input_sections( | |
2ea97941 | 3047 | uint64_t address, |
a445fddf | 3048 | const std::string& fill, |
2ea97941 | 3049 | std::list<Simple_input_section>* input_sections) |
a445fddf | 3050 | { |
20e6d0d6 DK |
3051 | if (this->checkpoint_ != NULL |
3052 | && !this->checkpoint_->input_sections_saved()) | |
3053 | this->checkpoint_->save_input_sections(); | |
3054 | ||
c0a62865 DK |
3055 | // Invalidate the relaxed input section map. |
3056 | this->is_relaxed_input_section_map_valid_ = false; | |
3057 | ||
2ea97941 | 3058 | uint64_t orig_address = address; |
a445fddf | 3059 | |
2ea97941 | 3060 | address = align_address(address, this->addralign()); |
a445fddf ILT |
3061 | |
3062 | Input_section_list remaining; | |
3063 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
3064 | p != this->input_sections_.end(); | |
3065 | ++p) | |
3066 | { | |
3067 | if (p->is_input_section()) | |
2ea97941 | 3068 | input_sections->push_back(Simple_input_section(p->relobj(), |
20e6d0d6 DK |
3069 | p->shndx())); |
3070 | else if (p->is_relaxed_input_section()) | |
2ea97941 | 3071 | input_sections->push_back( |
20e6d0d6 | 3072 | Simple_input_section(p->relaxed_input_section())); |
a445fddf ILT |
3073 | else |
3074 | { | |
2ea97941 ILT |
3075 | uint64_t aligned_address = align_address(address, p->addralign()); |
3076 | if (aligned_address != address && !fill.empty()) | |
a445fddf ILT |
3077 | { |
3078 | section_size_type length = | |
2ea97941 | 3079 | convert_to_section_size_type(aligned_address - address); |
a445fddf ILT |
3080 | std::string this_fill; |
3081 | this_fill.reserve(length); | |
3082 | while (this_fill.length() + fill.length() <= length) | |
3083 | this_fill += fill; | |
3084 | if (this_fill.length() < length) | |
3085 | this_fill.append(fill, 0, length - this_fill.length()); | |
3086 | ||
3087 | Output_section_data* posd = new Output_data_const(this_fill, 0); | |
3088 | remaining.push_back(Input_section(posd)); | |
3089 | } | |
2ea97941 | 3090 | address = aligned_address; |
a445fddf ILT |
3091 | |
3092 | remaining.push_back(*p); | |
3093 | ||
3094 | p->finalize_data_size(); | |
2ea97941 | 3095 | address += p->data_size(); |
a445fddf ILT |
3096 | } |
3097 | } | |
3098 | ||
3099 | this->input_sections_.swap(remaining); | |
3100 | this->first_input_offset_ = 0; | |
3101 | ||
2ea97941 ILT |
3102 | uint64_t data_size = address - orig_address; |
3103 | this->set_current_data_size_for_child(data_size); | |
3104 | return data_size; | |
a445fddf ILT |
3105 | } |
3106 | ||
8923b24c | 3107 | // Add an simple input section. |
a445fddf ILT |
3108 | |
3109 | void | |
8923b24c DK |
3110 | Output_section::add_simple_input_section(const Simple_input_section& sis, |
3111 | off_t data_size, | |
3112 | uint64_t addralign) | |
a445fddf | 3113 | { |
2ea97941 ILT |
3114 | if (addralign > this->addralign_) |
3115 | this->addralign_ = addralign; | |
a445fddf ILT |
3116 | |
3117 | off_t offset_in_section = this->current_data_size_for_child(); | |
3118 | off_t aligned_offset_in_section = align_address(offset_in_section, | |
2ea97941 | 3119 | addralign); |
a445fddf ILT |
3120 | |
3121 | this->set_current_data_size_for_child(aligned_offset_in_section | |
2ea97941 | 3122 | + data_size); |
a445fddf | 3123 | |
20e6d0d6 DK |
3124 | Input_section is = |
3125 | (sis.is_relaxed_input_section() | |
3126 | ? Input_section(sis.relaxed_input_section()) | |
2ea97941 | 3127 | : Input_section(sis.relobj(), sis.shndx(), data_size, addralign)); |
20e6d0d6 DK |
3128 | this->input_sections_.push_back(is); |
3129 | } | |
3130 | ||
8923b24c | 3131 | // Save states for relaxation. |
20e6d0d6 DK |
3132 | |
3133 | void | |
3134 | Output_section::save_states() | |
3135 | { | |
3136 | gold_assert(this->checkpoint_ == NULL); | |
3137 | Checkpoint_output_section* checkpoint = | |
3138 | new Checkpoint_output_section(this->addralign_, this->flags_, | |
3139 | this->input_sections_, | |
3140 | this->first_input_offset_, | |
3141 | this->attached_input_sections_are_sorted_); | |
3142 | this->checkpoint_ = checkpoint; | |
3143 | gold_assert(this->fills_.empty()); | |
3144 | } | |
3145 | ||
8923b24c DK |
3146 | void |
3147 | Output_section::discard_states() | |
3148 | { | |
3149 | gold_assert(this->checkpoint_ != NULL); | |
3150 | delete this->checkpoint_; | |
3151 | this->checkpoint_ = NULL; | |
3152 | gold_assert(this->fills_.empty()); | |
3153 | ||
3154 | // Simply invalidate the relaxed input section map since we do not keep | |
3155 | // track of it. | |
3156 | this->is_relaxed_input_section_map_valid_ = false; | |
3157 | } | |
3158 | ||
20e6d0d6 DK |
3159 | void |
3160 | Output_section::restore_states() | |
3161 | { | |
3162 | gold_assert(this->checkpoint_ != NULL); | |
3163 | Checkpoint_output_section* checkpoint = this->checkpoint_; | |
3164 | ||
3165 | this->addralign_ = checkpoint->addralign(); | |
3166 | this->flags_ = checkpoint->flags(); | |
3167 | this->first_input_offset_ = checkpoint->first_input_offset(); | |
3168 | ||
3169 | if (!checkpoint->input_sections_saved()) | |
3170 | { | |
3171 | // If we have not copied the input sections, just resize it. | |
3172 | size_t old_size = checkpoint->input_sections_size(); | |
3173 | gold_assert(this->input_sections_.size() >= old_size); | |
3174 | this->input_sections_.resize(old_size); | |
3175 | } | |
3176 | else | |
3177 | { | |
3178 | // We need to copy the whole list. This is not efficient for | |
3179 | // extremely large output with hundreads of thousands of input | |
3180 | // objects. We may need to re-think how we should pass sections | |
3181 | // to scripts. | |
c0a62865 | 3182 | this->input_sections_ = *checkpoint->input_sections(); |
20e6d0d6 DK |
3183 | } |
3184 | ||
3185 | this->attached_input_sections_are_sorted_ = | |
3186 | checkpoint->attached_input_sections_are_sorted(); | |
c0a62865 DK |
3187 | |
3188 | // Simply invalidate the relaxed input section map since we do not keep | |
3189 | // track of it. | |
3190 | this->is_relaxed_input_section_map_valid_ = false; | |
a445fddf ILT |
3191 | } |
3192 | ||
8923b24c DK |
3193 | // Update the section offsets of input sections in this. This is required if |
3194 | // relaxation causes some input sections to change sizes. | |
3195 | ||
3196 | void | |
3197 | Output_section::adjust_section_offsets() | |
3198 | { | |
3199 | if (!this->section_offsets_need_adjustment_) | |
3200 | return; | |
3201 | ||
3202 | off_t off = 0; | |
3203 | for (Input_section_list::iterator p = this->input_sections_.begin(); | |
3204 | p != this->input_sections_.end(); | |
3205 | ++p) | |
3206 | { | |
3207 | off = align_address(off, p->addralign()); | |
3208 | if (p->is_input_section()) | |
3209 | p->relobj()->set_section_offset(p->shndx(), off); | |
3210 | off += p->data_size(); | |
3211 | } | |
3212 | ||
3213 | this->section_offsets_need_adjustment_ = false; | |
3214 | } | |
3215 | ||
7d9e3d98 ILT |
3216 | // Print to the map file. |
3217 | ||
3218 | void | |
3219 | Output_section::do_print_to_mapfile(Mapfile* mapfile) const | |
3220 | { | |
3221 | mapfile->print_output_section(this); | |
3222 | ||
3223 | for (Input_section_list::const_iterator p = this->input_sections_.begin(); | |
3224 | p != this->input_sections_.end(); | |
3225 | ++p) | |
3226 | p->print_to_mapfile(mapfile); | |
3227 | } | |
3228 | ||
38c5e8b4 ILT |
3229 | // Print stats for merge sections to stderr. |
3230 | ||
3231 | void | |
3232 | Output_section::print_merge_stats() | |
3233 | { | |
3234 | Input_section_list::iterator p; | |
3235 | for (p = this->input_sections_.begin(); | |
3236 | p != this->input_sections_.end(); | |
3237 | ++p) | |
3238 | p->print_merge_stats(this->name_); | |
3239 | } | |
3240 | ||
a2fb1b05 ILT |
3241 | // Output segment methods. |
3242 | ||
2ea97941 | 3243 | Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags) |
54dc6425 | 3244 | : output_data_(), |
75f65a3e | 3245 | output_bss_(), |
a2fb1b05 ILT |
3246 | vaddr_(0), |
3247 | paddr_(0), | |
3248 | memsz_(0), | |
a445fddf ILT |
3249 | max_align_(0), |
3250 | min_p_align_(0), | |
a2fb1b05 ILT |
3251 | offset_(0), |
3252 | filesz_(0), | |
2ea97941 ILT |
3253 | type_(type), |
3254 | flags_(flags), | |
a445fddf | 3255 | is_max_align_known_(false), |
8a5e3e08 ILT |
3256 | are_addresses_set_(false), |
3257 | is_large_data_segment_(false) | |
a2fb1b05 | 3258 | { |
bb321bb1 ILT |
3259 | // The ELF ABI specifies that a PT_TLS segment always has PF_R as |
3260 | // the flags. | |
3261 | if (type == elfcpp::PT_TLS) | |
3262 | this->flags_ = elfcpp::PF_R; | |
a2fb1b05 ILT |
3263 | } |
3264 | ||
3265 | // Add an Output_section to an Output_segment. | |
3266 | ||
3267 | void | |
75f65a3e | 3268 | Output_segment::add_output_section(Output_section* os, |
f5c870d2 ILT |
3269 | elfcpp::Elf_Word seg_flags, |
3270 | bool do_sort) | |
a2fb1b05 | 3271 | { |
a3ad94ed | 3272 | gold_assert((os->flags() & elfcpp::SHF_ALLOC) != 0); |
a445fddf | 3273 | gold_assert(!this->is_max_align_known_); |
8a5e3e08 | 3274 | gold_assert(os->is_large_data_section() == this->is_large_data_segment()); |
96a0d71b | 3275 | gold_assert(this->type() == elfcpp::PT_LOAD || !do_sort); |
75f65a3e | 3276 | |
a192ba05 | 3277 | this->update_flags_for_output_section(seg_flags); |
75f65a3e ILT |
3278 | |
3279 | Output_segment::Output_data_list* pdl; | |
3280 | if (os->type() == elfcpp::SHT_NOBITS) | |
3281 | pdl = &this->output_bss_; | |
3282 | else | |
3283 | pdl = &this->output_data_; | |
54dc6425 | 3284 | |
f5c870d2 ILT |
3285 | // Note that while there may be many input sections in an output |
3286 | // section, there are normally only a few output sections in an | |
3287 | // output segment. The loops below are expected to be fast. | |
3288 | ||
a2fb1b05 | 3289 | // So that PT_NOTE segments will work correctly, we need to ensure |
96a0d71b | 3290 | // that all SHT_NOTE sections are adjacent. |
61ba1cf9 | 3291 | if (os->type() == elfcpp::SHT_NOTE && !pdl->empty()) |
a2fb1b05 | 3292 | { |
a3ad94ed | 3293 | Output_segment::Output_data_list::iterator p = pdl->end(); |
75f65a3e | 3294 | do |
54dc6425 | 3295 | { |
75f65a3e | 3296 | --p; |
54dc6425 ILT |
3297 | if ((*p)->is_section_type(elfcpp::SHT_NOTE)) |
3298 | { | |
3299 | ++p; | |
75f65a3e | 3300 | pdl->insert(p, os); |
54dc6425 ILT |
3301 | return; |
3302 | } | |
3303 | } | |
75f65a3e | 3304 | while (p != pdl->begin()); |
54dc6425 ILT |
3305 | } |
3306 | ||
3307 | // Similarly, so that PT_TLS segments will work, we need to group | |
75f65a3e ILT |
3308 | // SHF_TLS sections. An SHF_TLS/SHT_NOBITS section is a special |
3309 | // case: we group the SHF_TLS/SHT_NOBITS sections right after the | |
3310 | // SHF_TLS/SHT_PROGBITS sections. This lets us set up PT_TLS | |
07f397ab | 3311 | // correctly. SHF_TLS sections get added to both a PT_LOAD segment |
f5c870d2 ILT |
3312 | // and the PT_TLS segment; we do this grouping only for the PT_LOAD |
3313 | // segment. | |
07f397ab | 3314 | if (this->type_ != elfcpp::PT_TLS |
2d924fd9 | 3315 | && (os->flags() & elfcpp::SHF_TLS) != 0) |
54dc6425 | 3316 | { |
75f65a3e | 3317 | pdl = &this->output_data_; |
661be1e2 | 3318 | if (!pdl->empty()) |
a2fb1b05 | 3319 | { |
661be1e2 ILT |
3320 | bool nobits = os->type() == elfcpp::SHT_NOBITS; |
3321 | bool sawtls = false; | |
3322 | Output_segment::Output_data_list::iterator p = pdl->end(); | |
3323 | gold_assert(p != pdl->begin()); | |
3324 | do | |
a2fb1b05 | 3325 | { |
661be1e2 ILT |
3326 | --p; |
3327 | bool insert; | |
3328 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
3329 | { | |
3330 | sawtls = true; | |
3331 | // Put a NOBITS section after the first TLS section. | |
3332 | // Put a PROGBITS section after the first | |
3333 | // TLS/PROGBITS section. | |
3334 | insert = nobits || !(*p)->is_section_type(elfcpp::SHT_NOBITS); | |
3335 | } | |
3336 | else | |
3337 | { | |
3338 | // If we've gone past the TLS sections, but we've | |
3339 | // seen a TLS section, then we need to insert this | |
3340 | // section now. | |
3341 | insert = sawtls; | |
3342 | } | |
3343 | ||
3344 | if (insert) | |
3345 | { | |
3346 | ++p; | |
3347 | pdl->insert(p, os); | |
3348 | return; | |
3349 | } | |
a2fb1b05 | 3350 | } |
661be1e2 | 3351 | while (p != pdl->begin()); |
a2fb1b05 | 3352 | } |
ead1e424 | 3353 | |
dbe717ef ILT |
3354 | // There are no TLS sections yet; put this one at the requested |
3355 | // location in the section list. | |
a2fb1b05 ILT |
3356 | } |
3357 | ||
1a2dff53 | 3358 | if (do_sort) |
9f1d377b | 3359 | { |
1a2dff53 ILT |
3360 | // For the PT_GNU_RELRO segment, we need to group relro |
3361 | // sections, and we need to put them before any non-relro | |
3362 | // sections. Any relro local sections go before relro non-local | |
3363 | // sections. One section may be marked as the last relro | |
3364 | // section. | |
3365 | if (os->is_relro()) | |
9f1d377b | 3366 | { |
1a2dff53 ILT |
3367 | gold_assert(pdl == &this->output_data_); |
3368 | Output_segment::Output_data_list::iterator p; | |
3369 | for (p = pdl->begin(); p != pdl->end(); ++p) | |
3370 | { | |
3371 | if (!(*p)->is_section()) | |
3372 | break; | |
9f1d377b | 3373 | |
1a2dff53 ILT |
3374 | Output_section* pos = (*p)->output_section(); |
3375 | if (!pos->is_relro() | |
3376 | || (os->is_relro_local() && !pos->is_relro_local()) | |
3377 | || (!os->is_last_relro() && pos->is_last_relro())) | |
3378 | break; | |
3379 | } | |
3380 | ||
3381 | pdl->insert(p, os); | |
3382 | return; | |
9f1d377b ILT |
3383 | } |
3384 | ||
1a2dff53 ILT |
3385 | // One section may be marked as the first section which follows |
3386 | // the relro sections. | |
3387 | if (os->is_first_non_relro()) | |
3388 | { | |
3389 | gold_assert(pdl == &this->output_data_); | |
3390 | Output_segment::Output_data_list::iterator p; | |
3391 | for (p = pdl->begin(); p != pdl->end(); ++p) | |
3392 | { | |
3393 | if (!(*p)->is_section()) | |
3394 | break; | |
3395 | ||
3396 | Output_section* pos = (*p)->output_section(); | |
3397 | if (!pos->is_relro()) | |
3398 | break; | |
3399 | } | |
3400 | ||
3401 | pdl->insert(p, os); | |
3402 | return; | |
3403 | } | |
9f1d377b ILT |
3404 | } |
3405 | ||
8a5e3e08 ILT |
3406 | // Small data sections go at the end of the list of data sections. |
3407 | // If OS is not small, and there are small sections, we have to | |
3408 | // insert it before the first small section. | |
3409 | if (os->type() != elfcpp::SHT_NOBITS | |
3410 | && !os->is_small_section() | |
3411 | && !pdl->empty() | |
3412 | && pdl->back()->is_section() | |
3413 | && pdl->back()->output_section()->is_small_section()) | |
3414 | { | |
3415 | for (Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3416 | p != pdl->end(); | |
3417 | ++p) | |
3418 | { | |
3419 | if ((*p)->is_section() | |
3420 | && (*p)->output_section()->is_small_section()) | |
3421 | { | |
3422 | pdl->insert(p, os); | |
3423 | return; | |
3424 | } | |
3425 | } | |
3426 | gold_unreachable(); | |
3427 | } | |
3428 | ||
3429 | // A small BSS section goes at the start of the BSS sections, after | |
3430 | // other small BSS sections. | |
3431 | if (os->type() == elfcpp::SHT_NOBITS && os->is_small_section()) | |
3432 | { | |
3433 | for (Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3434 | p != pdl->end(); | |
3435 | ++p) | |
3436 | { | |
3437 | if (!(*p)->is_section() | |
3438 | || !(*p)->output_section()->is_small_section()) | |
3439 | { | |
3440 | pdl->insert(p, os); | |
3441 | return; | |
3442 | } | |
3443 | } | |
3444 | } | |
3445 | ||
3446 | // A large BSS section goes at the end of the BSS sections, which | |
3447 | // means that one that is not large must come before the first large | |
3448 | // one. | |
3449 | if (os->type() == elfcpp::SHT_NOBITS | |
3450 | && !os->is_large_section() | |
3451 | && !pdl->empty() | |
3452 | && pdl->back()->is_section() | |
3453 | && pdl->back()->output_section()->is_large_section()) | |
3454 | { | |
3455 | for (Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3456 | p != pdl->end(); | |
3457 | ++p) | |
3458 | { | |
3459 | if ((*p)->is_section() | |
3460 | && (*p)->output_section()->is_large_section()) | |
3461 | { | |
3462 | pdl->insert(p, os); | |
3463 | return; | |
3464 | } | |
3465 | } | |
3466 | gold_unreachable(); | |
3467 | } | |
3468 | ||
f5c870d2 ILT |
3469 | // We do some further output section sorting in order to make the |
3470 | // generated program run more efficiently. We should only do this | |
3471 | // when not using a linker script, so it is controled by the DO_SORT | |
3472 | // parameter. | |
3473 | if (do_sort) | |
3474 | { | |
3475 | // FreeBSD requires the .interp section to be in the first page | |
3476 | // of the executable. That is a more efficient location anyhow | |
3477 | // for any OS, since it means that the kernel will have the data | |
3478 | // handy after it reads the program headers. | |
3479 | if (os->is_interp() && !pdl->empty()) | |
3480 | { | |
3481 | pdl->insert(pdl->begin(), os); | |
3482 | return; | |
3483 | } | |
3484 | ||
3485 | // Put loadable non-writable notes immediately after the .interp | |
3486 | // sections, so that the PT_NOTE segment is on the first page of | |
3487 | // the executable. | |
3488 | if (os->type() == elfcpp::SHT_NOTE | |
3489 | && (os->flags() & elfcpp::SHF_WRITE) == 0 | |
3490 | && !pdl->empty()) | |
3491 | { | |
3492 | Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3493 | if ((*p)->is_section() && (*p)->output_section()->is_interp()) | |
3494 | ++p; | |
3495 | pdl->insert(p, os); | |
96a0d71b | 3496 | return; |
f5c870d2 ILT |
3497 | } |
3498 | ||
3499 | // If this section is used by the dynamic linker, and it is not | |
3500 | // writable, then put it first, after the .interp section and | |
3501 | // any loadable notes. This makes it more likely that the | |
3502 | // dynamic linker will have to read less data from the disk. | |
3503 | if (os->is_dynamic_linker_section() | |
3504 | && !pdl->empty() | |
3505 | && (os->flags() & elfcpp::SHF_WRITE) == 0) | |
3506 | { | |
3507 | bool is_reloc = (os->type() == elfcpp::SHT_REL | |
3508 | || os->type() == elfcpp::SHT_RELA); | |
3509 | Output_segment::Output_data_list::iterator p = pdl->begin(); | |
3510 | while (p != pdl->end() | |
3511 | && (*p)->is_section() | |
3512 | && ((*p)->output_section()->is_dynamic_linker_section() | |
3513 | || (*p)->output_section()->type() == elfcpp::SHT_NOTE)) | |
3514 | { | |
3515 | // Put reloc sections after the other ones. Putting the | |
3516 | // dynamic reloc sections first confuses BFD, notably | |
3517 | // objcopy and strip. | |
3518 | if (!is_reloc | |
3519 | && ((*p)->output_section()->type() == elfcpp::SHT_REL | |
3520 | || (*p)->output_section()->type() == elfcpp::SHT_RELA)) | |
3521 | break; | |
3522 | ++p; | |
3523 | } | |
3524 | pdl->insert(p, os); | |
3525 | return; | |
3526 | } | |
3527 | } | |
3528 | ||
3529 | // If there were no constraints on the output section, just add it | |
3530 | // to the end of the list. | |
01676dcd | 3531 | pdl->push_back(os); |
75f65a3e ILT |
3532 | } |
3533 | ||
1650c4ff ILT |
3534 | // Remove an Output_section from this segment. It is an error if it |
3535 | // is not present. | |
3536 | ||
3537 | void | |
3538 | Output_segment::remove_output_section(Output_section* os) | |
3539 | { | |
3540 | // We only need this for SHT_PROGBITS. | |
3541 | gold_assert(os->type() == elfcpp::SHT_PROGBITS); | |
3542 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
3543 | p != this->output_data_.end(); | |
3544 | ++p) | |
3545 | { | |
3546 | if (*p == os) | |
3547 | { | |
3548 | this->output_data_.erase(p); | |
3549 | return; | |
3550 | } | |
3551 | } | |
3552 | gold_unreachable(); | |
3553 | } | |
3554 | ||
a192ba05 ILT |
3555 | // Add an Output_data (which need not be an Output_section) to the |
3556 | // start of a segment. | |
75f65a3e ILT |
3557 | |
3558 | void | |
3559 | Output_segment::add_initial_output_data(Output_data* od) | |
3560 | { | |
a445fddf | 3561 | gold_assert(!this->is_max_align_known_); |
75f65a3e ILT |
3562 | this->output_data_.push_front(od); |
3563 | } | |
3564 | ||
9f1d377b ILT |
3565 | // Return whether the first data section is a relro section. |
3566 | ||
3567 | bool | |
3568 | Output_segment::is_first_section_relro() const | |
3569 | { | |
3570 | return (!this->output_data_.empty() | |
3571 | && this->output_data_.front()->is_section() | |
3572 | && this->output_data_.front()->output_section()->is_relro()); | |
3573 | } | |
3574 | ||
75f65a3e | 3575 | // Return the maximum alignment of the Output_data in Output_segment. |
75f65a3e ILT |
3576 | |
3577 | uint64_t | |
a445fddf | 3578 | Output_segment::maximum_alignment() |
75f65a3e | 3579 | { |
a445fddf | 3580 | if (!this->is_max_align_known_) |
ead1e424 | 3581 | { |
2ea97941 | 3582 | uint64_t addralign; |
ead1e424 | 3583 | |
2ea97941 ILT |
3584 | addralign = Output_segment::maximum_alignment_list(&this->output_data_); |
3585 | if (addralign > this->max_align_) | |
3586 | this->max_align_ = addralign; | |
ead1e424 | 3587 | |
2ea97941 ILT |
3588 | addralign = Output_segment::maximum_alignment_list(&this->output_bss_); |
3589 | if (addralign > this->max_align_) | |
3590 | this->max_align_ = addralign; | |
ead1e424 | 3591 | |
a445fddf | 3592 | this->is_max_align_known_ = true; |
ead1e424 ILT |
3593 | } |
3594 | ||
a445fddf | 3595 | return this->max_align_; |
75f65a3e ILT |
3596 | } |
3597 | ||
ead1e424 ILT |
3598 | // Return the maximum alignment of a list of Output_data. |
3599 | ||
3600 | uint64_t | |
a445fddf | 3601 | Output_segment::maximum_alignment_list(const Output_data_list* pdl) |
ead1e424 ILT |
3602 | { |
3603 | uint64_t ret = 0; | |
3604 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3605 | p != pdl->end(); | |
3606 | ++p) | |
3607 | { | |
2ea97941 ILT |
3608 | uint64_t addralign = (*p)->addralign(); |
3609 | if (addralign > ret) | |
3610 | ret = addralign; | |
ead1e424 ILT |
3611 | } |
3612 | return ret; | |
3613 | } | |
3614 | ||
4f4c5f80 ILT |
3615 | // Return the number of dynamic relocs applied to this segment. |
3616 | ||
3617 | unsigned int | |
3618 | Output_segment::dynamic_reloc_count() const | |
3619 | { | |
3620 | return (this->dynamic_reloc_count_list(&this->output_data_) | |
3621 | + this->dynamic_reloc_count_list(&this->output_bss_)); | |
3622 | } | |
3623 | ||
3624 | // Return the number of dynamic relocs applied to an Output_data_list. | |
3625 | ||
3626 | unsigned int | |
3627 | Output_segment::dynamic_reloc_count_list(const Output_data_list* pdl) const | |
3628 | { | |
3629 | unsigned int count = 0; | |
3630 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3631 | p != pdl->end(); | |
3632 | ++p) | |
3633 | count += (*p)->dynamic_reloc_count(); | |
3634 | return count; | |
3635 | } | |
3636 | ||
a445fddf ILT |
3637 | // Set the section addresses for an Output_segment. If RESET is true, |
3638 | // reset the addresses first. ADDR is the address and *POFF is the | |
3639 | // file offset. Set the section indexes starting with *PSHNDX. | |
3640 | // Return the address of the immediately following segment. Update | |
3641 | // *POFF and *PSHNDX. | |
75f65a3e ILT |
3642 | |
3643 | uint64_t | |
96a2b4e4 | 3644 | Output_segment::set_section_addresses(const Layout* layout, bool reset, |
1a2dff53 ILT |
3645 | uint64_t addr, |
3646 | unsigned int increase_relro, | |
3647 | off_t* poff, | |
ead1e424 | 3648 | unsigned int* pshndx) |
75f65a3e | 3649 | { |
a3ad94ed | 3650 | gold_assert(this->type_ == elfcpp::PT_LOAD); |
75f65a3e | 3651 | |
1a2dff53 ILT |
3652 | off_t orig_off = *poff; |
3653 | ||
3654 | // If we have relro sections, we need to pad forward now so that the | |
3655 | // relro sections plus INCREASE_RELRO end on a common page boundary. | |
3656 | if (parameters->options().relro() | |
3657 | && this->is_first_section_relro() | |
3658 | && (!this->are_addresses_set_ || reset)) | |
3659 | { | |
3660 | uint64_t relro_size = 0; | |
3661 | off_t off = *poff; | |
3662 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
3663 | p != this->output_data_.end(); | |
3664 | ++p) | |
3665 | { | |
3666 | if (!(*p)->is_section()) | |
3667 | break; | |
3668 | Output_section* pos = (*p)->output_section(); | |
3669 | if (!pos->is_relro()) | |
3670 | break; | |
3671 | gold_assert(!(*p)->is_section_flag_set(elfcpp::SHF_TLS)); | |
3672 | if ((*p)->is_address_valid()) | |
3673 | relro_size += (*p)->data_size(); | |
3674 | else | |
3675 | { | |
3676 | // FIXME: This could be faster. | |
3677 | (*p)->set_address_and_file_offset(addr + relro_size, | |
3678 | off + relro_size); | |
3679 | relro_size += (*p)->data_size(); | |
3680 | (*p)->reset_address_and_file_offset(); | |
3681 | } | |
3682 | } | |
3683 | relro_size += increase_relro; | |
3684 | ||
3685 | uint64_t page_align = parameters->target().common_pagesize(); | |
3686 | ||
3687 | // Align to offset N such that (N + RELRO_SIZE) % PAGE_ALIGN == 0. | |
3688 | uint64_t desired_align = page_align - (relro_size % page_align); | |
3689 | if (desired_align < *poff % page_align) | |
3690 | *poff += page_align - *poff % page_align; | |
3691 | *poff += desired_align - *poff % page_align; | |
3692 | addr += *poff - orig_off; | |
3693 | orig_off = *poff; | |
3694 | } | |
3695 | ||
a445fddf ILT |
3696 | if (!reset && this->are_addresses_set_) |
3697 | { | |
3698 | gold_assert(this->paddr_ == addr); | |
3699 | addr = this->vaddr_; | |
3700 | } | |
3701 | else | |
3702 | { | |
3703 | this->vaddr_ = addr; | |
3704 | this->paddr_ = addr; | |
3705 | this->are_addresses_set_ = true; | |
3706 | } | |
75f65a3e | 3707 | |
96a2b4e4 ILT |
3708 | bool in_tls = false; |
3709 | ||
75f65a3e ILT |
3710 | this->offset_ = orig_off; |
3711 | ||
96a2b4e4 | 3712 | addr = this->set_section_list_addresses(layout, reset, &this->output_data_, |
1a2dff53 | 3713 | addr, poff, pshndx, &in_tls); |
75f65a3e ILT |
3714 | this->filesz_ = *poff - orig_off; |
3715 | ||
3716 | off_t off = *poff; | |
3717 | ||
96a2b4e4 ILT |
3718 | uint64_t ret = this->set_section_list_addresses(layout, reset, |
3719 | &this->output_bss_, | |
3720 | addr, poff, pshndx, | |
1a2dff53 | 3721 | &in_tls); |
96a2b4e4 ILT |
3722 | |
3723 | // If the last section was a TLS section, align upward to the | |
3724 | // alignment of the TLS segment, so that the overall size of the TLS | |
3725 | // segment is aligned. | |
3726 | if (in_tls) | |
3727 | { | |
3728 | uint64_t segment_align = layout->tls_segment()->maximum_alignment(); | |
3729 | *poff = align_address(*poff, segment_align); | |
3730 | } | |
3731 | ||
75f65a3e ILT |
3732 | this->memsz_ = *poff - orig_off; |
3733 | ||
3734 | // Ignore the file offset adjustments made by the BSS Output_data | |
3735 | // objects. | |
3736 | *poff = off; | |
61ba1cf9 ILT |
3737 | |
3738 | return ret; | |
75f65a3e ILT |
3739 | } |
3740 | ||
b8e6aad9 ILT |
3741 | // Set the addresses and file offsets in a list of Output_data |
3742 | // structures. | |
75f65a3e ILT |
3743 | |
3744 | uint64_t | |
96a2b4e4 ILT |
3745 | Output_segment::set_section_list_addresses(const Layout* layout, bool reset, |
3746 | Output_data_list* pdl, | |
ead1e424 | 3747 | uint64_t addr, off_t* poff, |
96a2b4e4 | 3748 | unsigned int* pshndx, |
1a2dff53 | 3749 | bool* in_tls) |
75f65a3e | 3750 | { |
ead1e424 | 3751 | off_t startoff = *poff; |
75f65a3e | 3752 | |
ead1e424 | 3753 | off_t off = startoff; |
75f65a3e ILT |
3754 | for (Output_data_list::iterator p = pdl->begin(); |
3755 | p != pdl->end(); | |
3756 | ++p) | |
3757 | { | |
a445fddf ILT |
3758 | if (reset) |
3759 | (*p)->reset_address_and_file_offset(); | |
3760 | ||
3761 | // When using a linker script the section will most likely | |
3762 | // already have an address. | |
3763 | if (!(*p)->is_address_valid()) | |
3802b2dd | 3764 | { |
96a2b4e4 ILT |
3765 | uint64_t align = (*p)->addralign(); |
3766 | ||
3767 | if ((*p)->is_section_flag_set(elfcpp::SHF_TLS)) | |
3768 | { | |
3769 | // Give the first TLS section the alignment of the | |
3770 | // entire TLS segment. Otherwise the TLS segment as a | |
3771 | // whole may be misaligned. | |
3772 | if (!*in_tls) | |
3773 | { | |
3774 | Output_segment* tls_segment = layout->tls_segment(); | |
3775 | gold_assert(tls_segment != NULL); | |
3776 | uint64_t segment_align = tls_segment->maximum_alignment(); | |
3777 | gold_assert(segment_align >= align); | |
3778 | align = segment_align; | |
3779 | ||
3780 | *in_tls = true; | |
3781 | } | |
3782 | } | |
3783 | else | |
3784 | { | |
3785 | // If this is the first section after the TLS segment, | |
3786 | // align it to at least the alignment of the TLS | |
3787 | // segment, so that the size of the overall TLS segment | |
3788 | // is aligned. | |
3789 | if (*in_tls) | |
3790 | { | |
3791 | uint64_t segment_align = | |
3792 | layout->tls_segment()->maximum_alignment(); | |
3793 | if (segment_align > align) | |
3794 | align = segment_align; | |
3795 | ||
3796 | *in_tls = false; | |
3797 | } | |
3798 | } | |
3799 | ||
3800 | off = align_address(off, align); | |
3802b2dd ILT |
3801 | (*p)->set_address_and_file_offset(addr + (off - startoff), off); |
3802 | } | |
a445fddf ILT |
3803 | else |
3804 | { | |
3805 | // The script may have inserted a skip forward, but it | |
3806 | // better not have moved backward. | |
661be1e2 ILT |
3807 | if ((*p)->address() >= addr + (off - startoff)) |
3808 | off += (*p)->address() - (addr + (off - startoff)); | |
3809 | else | |
3810 | { | |
3811 | if (!layout->script_options()->saw_sections_clause()) | |
3812 | gold_unreachable(); | |
3813 | else | |
3814 | { | |
3815 | Output_section* os = (*p)->output_section(); | |
64b1ae37 DK |
3816 | |
3817 | // Cast to unsigned long long to avoid format warnings. | |
3818 | unsigned long long previous_dot = | |
3819 | static_cast<unsigned long long>(addr + (off - startoff)); | |
3820 | unsigned long long dot = | |
3821 | static_cast<unsigned long long>((*p)->address()); | |
3822 | ||
661be1e2 ILT |
3823 | if (os == NULL) |
3824 | gold_error(_("dot moves backward in linker script " | |
64b1ae37 | 3825 | "from 0x%llx to 0x%llx"), previous_dot, dot); |
661be1e2 ILT |
3826 | else |
3827 | gold_error(_("address of section '%s' moves backward " | |
3828 | "from 0x%llx to 0x%llx"), | |
64b1ae37 | 3829 | os->name(), previous_dot, dot); |
661be1e2 ILT |
3830 | } |
3831 | } | |
a445fddf ILT |
3832 | (*p)->set_file_offset(off); |
3833 | (*p)->finalize_data_size(); | |
3834 | } | |
ead1e424 | 3835 | |
96a2b4e4 ILT |
3836 | // We want to ignore the size of a SHF_TLS or SHT_NOBITS |
3837 | // section. Such a section does not affect the size of a | |
3838 | // PT_LOAD segment. | |
3839 | if (!(*p)->is_section_flag_set(elfcpp::SHF_TLS) | |
ead1e424 ILT |
3840 | || !(*p)->is_section_type(elfcpp::SHT_NOBITS)) |
3841 | off += (*p)->data_size(); | |
75f65a3e | 3842 | |
ead1e424 ILT |
3843 | if ((*p)->is_section()) |
3844 | { | |
3845 | (*p)->set_out_shndx(*pshndx); | |
3846 | ++*pshndx; | |
3847 | } | |
75f65a3e ILT |
3848 | } |
3849 | ||
3850 | *poff = off; | |
ead1e424 | 3851 | return addr + (off - startoff); |
75f65a3e ILT |
3852 | } |
3853 | ||
3854 | // For a non-PT_LOAD segment, set the offset from the sections, if | |
1a2dff53 | 3855 | // any. Add INCREASE to the file size and the memory size. |
75f65a3e ILT |
3856 | |
3857 | void | |
1a2dff53 | 3858 | Output_segment::set_offset(unsigned int increase) |
75f65a3e | 3859 | { |
a3ad94ed | 3860 | gold_assert(this->type_ != elfcpp::PT_LOAD); |
75f65a3e | 3861 | |
a445fddf ILT |
3862 | gold_assert(!this->are_addresses_set_); |
3863 | ||
75f65a3e ILT |
3864 | if (this->output_data_.empty() && this->output_bss_.empty()) |
3865 | { | |
1a2dff53 | 3866 | gold_assert(increase == 0); |
75f65a3e ILT |
3867 | this->vaddr_ = 0; |
3868 | this->paddr_ = 0; | |
a445fddf | 3869 | this->are_addresses_set_ = true; |
75f65a3e | 3870 | this->memsz_ = 0; |
a445fddf | 3871 | this->min_p_align_ = 0; |
75f65a3e ILT |
3872 | this->offset_ = 0; |
3873 | this->filesz_ = 0; | |
3874 | return; | |
3875 | } | |
3876 | ||
3877 | const Output_data* first; | |
3878 | if (this->output_data_.empty()) | |
3879 | first = this->output_bss_.front(); | |
3880 | else | |
3881 | first = this->output_data_.front(); | |
3882 | this->vaddr_ = first->address(); | |
a445fddf ILT |
3883 | this->paddr_ = (first->has_load_address() |
3884 | ? first->load_address() | |
3885 | : this->vaddr_); | |
3886 | this->are_addresses_set_ = true; | |
75f65a3e ILT |
3887 | this->offset_ = first->offset(); |
3888 | ||
3889 | if (this->output_data_.empty()) | |
3890 | this->filesz_ = 0; | |
3891 | else | |
3892 | { | |
3893 | const Output_data* last_data = this->output_data_.back(); | |
3894 | this->filesz_ = (last_data->address() | |
3895 | + last_data->data_size() | |
3896 | - this->vaddr_); | |
3897 | } | |
3898 | ||
3899 | const Output_data* last; | |
3900 | if (this->output_bss_.empty()) | |
3901 | last = this->output_data_.back(); | |
3902 | else | |
3903 | last = this->output_bss_.back(); | |
3904 | this->memsz_ = (last->address() | |
3905 | + last->data_size() | |
3906 | - this->vaddr_); | |
96a2b4e4 | 3907 | |
1a2dff53 ILT |
3908 | this->filesz_ += increase; |
3909 | this->memsz_ += increase; | |
3910 | ||
96a2b4e4 ILT |
3911 | // If this is a TLS segment, align the memory size. The code in |
3912 | // set_section_list ensures that the section after the TLS segment | |
3913 | // is aligned to give us room. | |
3914 | if (this->type_ == elfcpp::PT_TLS) | |
3915 | { | |
3916 | uint64_t segment_align = this->maximum_alignment(); | |
3917 | gold_assert(this->vaddr_ == align_address(this->vaddr_, segment_align)); | |
3918 | this->memsz_ = align_address(this->memsz_, segment_align); | |
3919 | } | |
75f65a3e ILT |
3920 | } |
3921 | ||
7bf1f802 ILT |
3922 | // Set the TLS offsets of the sections in the PT_TLS segment. |
3923 | ||
3924 | void | |
3925 | Output_segment::set_tls_offsets() | |
3926 | { | |
3927 | gold_assert(this->type_ == elfcpp::PT_TLS); | |
3928 | ||
3929 | for (Output_data_list::iterator p = this->output_data_.begin(); | |
3930 | p != this->output_data_.end(); | |
3931 | ++p) | |
3932 | (*p)->set_tls_offset(this->vaddr_); | |
3933 | ||
3934 | for (Output_data_list::iterator p = this->output_bss_.begin(); | |
3935 | p != this->output_bss_.end(); | |
3936 | ++p) | |
3937 | (*p)->set_tls_offset(this->vaddr_); | |
3938 | } | |
3939 | ||
a445fddf ILT |
3940 | // Return the address of the first section. |
3941 | ||
3942 | uint64_t | |
3943 | Output_segment::first_section_load_address() const | |
3944 | { | |
3945 | for (Output_data_list::const_iterator p = this->output_data_.begin(); | |
3946 | p != this->output_data_.end(); | |
3947 | ++p) | |
3948 | if ((*p)->is_section()) | |
3949 | return (*p)->has_load_address() ? (*p)->load_address() : (*p)->address(); | |
3950 | ||
3951 | for (Output_data_list::const_iterator p = this->output_bss_.begin(); | |
3952 | p != this->output_bss_.end(); | |
3953 | ++p) | |
3954 | if ((*p)->is_section()) | |
3955 | return (*p)->has_load_address() ? (*p)->load_address() : (*p)->address(); | |
3956 | ||
3957 | gold_unreachable(); | |
3958 | } | |
3959 | ||
75f65a3e ILT |
3960 | // Return the number of Output_sections in an Output_segment. |
3961 | ||
3962 | unsigned int | |
3963 | Output_segment::output_section_count() const | |
3964 | { | |
3965 | return (this->output_section_count_list(&this->output_data_) | |
3966 | + this->output_section_count_list(&this->output_bss_)); | |
3967 | } | |
3968 | ||
3969 | // Return the number of Output_sections in an Output_data_list. | |
3970 | ||
3971 | unsigned int | |
3972 | Output_segment::output_section_count_list(const Output_data_list* pdl) const | |
3973 | { | |
3974 | unsigned int count = 0; | |
3975 | for (Output_data_list::const_iterator p = pdl->begin(); | |
3976 | p != pdl->end(); | |
3977 | ++p) | |
3978 | { | |
3979 | if ((*p)->is_section()) | |
3980 | ++count; | |
3981 | } | |
3982 | return count; | |
a2fb1b05 ILT |
3983 | } |
3984 | ||
1c4f3631 ILT |
3985 | // Return the section attached to the list segment with the lowest |
3986 | // load address. This is used when handling a PHDRS clause in a | |
3987 | // linker script. | |
3988 | ||
3989 | Output_section* | |
3990 | Output_segment::section_with_lowest_load_address() const | |
3991 | { | |
3992 | Output_section* found = NULL; | |
3993 | uint64_t found_lma = 0; | |
3994 | this->lowest_load_address_in_list(&this->output_data_, &found, &found_lma); | |
3995 | ||
3996 | Output_section* found_data = found; | |
3997 | this->lowest_load_address_in_list(&this->output_bss_, &found, &found_lma); | |
3998 | if (found != found_data && found_data != NULL) | |
3999 | { | |
4000 | gold_error(_("nobits section %s may not precede progbits section %s " | |
4001 | "in same segment"), | |
4002 | found->name(), found_data->name()); | |
4003 | return NULL; | |
4004 | } | |
4005 | ||
4006 | return found; | |
4007 | } | |
4008 | ||
4009 | // Look through a list for a section with a lower load address. | |
4010 | ||
4011 | void | |
4012 | Output_segment::lowest_load_address_in_list(const Output_data_list* pdl, | |
4013 | Output_section** found, | |
4014 | uint64_t* found_lma) const | |
4015 | { | |
4016 | for (Output_data_list::const_iterator p = pdl->begin(); | |
4017 | p != pdl->end(); | |
4018 | ++p) | |
4019 | { | |
4020 | if (!(*p)->is_section()) | |
4021 | continue; | |
4022 | Output_section* os = static_cast<Output_section*>(*p); | |
4023 | uint64_t lma = (os->has_load_address() | |
4024 | ? os->load_address() | |
4025 | : os->address()); | |
4026 | if (*found == NULL || lma < *found_lma) | |
4027 | { | |
4028 | *found = os; | |
4029 | *found_lma = lma; | |
4030 | } | |
4031 | } | |
4032 | } | |
4033 | ||
61ba1cf9 ILT |
4034 | // Write the segment data into *OPHDR. |
4035 | ||
4036 | template<int size, bool big_endian> | |
4037 | void | |
ead1e424 | 4038 | Output_segment::write_header(elfcpp::Phdr_write<size, big_endian>* ophdr) |
61ba1cf9 ILT |
4039 | { |
4040 | ophdr->put_p_type(this->type_); | |
4041 | ophdr->put_p_offset(this->offset_); | |
4042 | ophdr->put_p_vaddr(this->vaddr_); | |
4043 | ophdr->put_p_paddr(this->paddr_); | |
4044 | ophdr->put_p_filesz(this->filesz_); | |
4045 | ophdr->put_p_memsz(this->memsz_); | |
4046 | ophdr->put_p_flags(this->flags_); | |
a445fddf | 4047 | ophdr->put_p_align(std::max(this->min_p_align_, this->maximum_alignment())); |
61ba1cf9 ILT |
4048 | } |
4049 | ||
4050 | // Write the section headers into V. | |
4051 | ||
4052 | template<int size, bool big_endian> | |
4053 | unsigned char* | |
16649710 ILT |
4054 | Output_segment::write_section_headers(const Layout* layout, |
4055 | const Stringpool* secnamepool, | |
ead1e424 | 4056 | unsigned char* v, |
7d1a9ebb | 4057 | unsigned int *pshndx) const |
5482377d | 4058 | { |
ead1e424 ILT |
4059 | // Every section that is attached to a segment must be attached to a |
4060 | // PT_LOAD segment, so we only write out section headers for PT_LOAD | |
4061 | // segments. | |
4062 | if (this->type_ != elfcpp::PT_LOAD) | |
4063 | return v; | |
4064 | ||
7d1a9ebb ILT |
4065 | v = this->write_section_headers_list<size, big_endian>(layout, secnamepool, |
4066 | &this->output_data_, | |
4067 | v, pshndx); | |
4068 | v = this->write_section_headers_list<size, big_endian>(layout, secnamepool, | |
4069 | &this->output_bss_, | |
4070 | v, pshndx); | |
61ba1cf9 ILT |
4071 | return v; |
4072 | } | |
4073 | ||
4074 | template<int size, bool big_endian> | |
4075 | unsigned char* | |
16649710 ILT |
4076 | Output_segment::write_section_headers_list(const Layout* layout, |
4077 | const Stringpool* secnamepool, | |
61ba1cf9 | 4078 | const Output_data_list* pdl, |
ead1e424 | 4079 | unsigned char* v, |
7d1a9ebb | 4080 | unsigned int* pshndx) const |
61ba1cf9 ILT |
4081 | { |
4082 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
4083 | for (Output_data_list::const_iterator p = pdl->begin(); | |
4084 | p != pdl->end(); | |
4085 | ++p) | |
4086 | { | |
4087 | if ((*p)->is_section()) | |
4088 | { | |
5482377d | 4089 | const Output_section* ps = static_cast<const Output_section*>(*p); |
a3ad94ed | 4090 | gold_assert(*pshndx == ps->out_shndx()); |
61ba1cf9 | 4091 | elfcpp::Shdr_write<size, big_endian> oshdr(v); |
16649710 | 4092 | ps->write_header(layout, secnamepool, &oshdr); |
61ba1cf9 | 4093 | v += shdr_size; |
ead1e424 | 4094 | ++*pshndx; |
61ba1cf9 ILT |
4095 | } |
4096 | } | |
4097 | return v; | |
4098 | } | |
4099 | ||
7d9e3d98 ILT |
4100 | // Print the output sections to the map file. |
4101 | ||
4102 | void | |
4103 | Output_segment::print_sections_to_mapfile(Mapfile* mapfile) const | |
4104 | { | |
4105 | if (this->type() != elfcpp::PT_LOAD) | |
4106 | return; | |
4107 | this->print_section_list_to_mapfile(mapfile, &this->output_data_); | |
4108 | this->print_section_list_to_mapfile(mapfile, &this->output_bss_); | |
4109 | } | |
4110 | ||
4111 | // Print an output section list to the map file. | |
4112 | ||
4113 | void | |
4114 | Output_segment::print_section_list_to_mapfile(Mapfile* mapfile, | |
4115 | const Output_data_list* pdl) const | |
4116 | { | |
4117 | for (Output_data_list::const_iterator p = pdl->begin(); | |
4118 | p != pdl->end(); | |
4119 | ++p) | |
4120 | (*p)->print_to_mapfile(mapfile); | |
4121 | } | |
4122 | ||
a2fb1b05 ILT |
4123 | // Output_file methods. |
4124 | ||
14144f39 ILT |
4125 | Output_file::Output_file(const char* name) |
4126 | : name_(name), | |
61ba1cf9 ILT |
4127 | o_(-1), |
4128 | file_size_(0), | |
c420411f | 4129 | base_(NULL), |
516cb3d0 ILT |
4130 | map_is_anonymous_(false), |
4131 | is_temporary_(false) | |
61ba1cf9 ILT |
4132 | { |
4133 | } | |
4134 | ||
404c2abb ILT |
4135 | // Try to open an existing file. Returns false if the file doesn't |
4136 | // exist, has a size of 0 or can't be mmapped. | |
4137 | ||
4138 | bool | |
4139 | Output_file::open_for_modification() | |
4140 | { | |
4141 | // The name "-" means "stdout". | |
4142 | if (strcmp(this->name_, "-") == 0) | |
4143 | return false; | |
4144 | ||
4145 | // Don't bother opening files with a size of zero. | |
4146 | struct stat s; | |
4147 | if (::stat(this->name_, &s) != 0 || s.st_size == 0) | |
4148 | return false; | |
4149 | ||
4150 | int o = open_descriptor(-1, this->name_, O_RDWR, 0); | |
4151 | if (o < 0) | |
4152 | gold_fatal(_("%s: open: %s"), this->name_, strerror(errno)); | |
4153 | this->o_ = o; | |
4154 | this->file_size_ = s.st_size; | |
4155 | ||
4156 | // If the file can't be mmapped, copying the content to an anonymous | |
4157 | // map will probably negate the performance benefits of incremental | |
4158 | // linking. This could be helped by using views and loading only | |
4159 | // the necessary parts, but this is not supported as of now. | |
4160 | if (!this->map_no_anonymous()) | |
4161 | { | |
4162 | release_descriptor(o, true); | |
4163 | this->o_ = -1; | |
4164 | this->file_size_ = 0; | |
4165 | return false; | |
4166 | } | |
4167 | ||
4168 | return true; | |
4169 | } | |
4170 | ||
61ba1cf9 ILT |
4171 | // Open the output file. |
4172 | ||
a2fb1b05 | 4173 | void |
61ba1cf9 | 4174 | Output_file::open(off_t file_size) |
a2fb1b05 | 4175 | { |
61ba1cf9 ILT |
4176 | this->file_size_ = file_size; |
4177 | ||
4e9d8586 ILT |
4178 | // Unlink the file first; otherwise the open() may fail if the file |
4179 | // is busy (e.g. it's an executable that's currently being executed). | |
4180 | // | |
4181 | // However, the linker may be part of a system where a zero-length | |
4182 | // file is created for it to write to, with tight permissions (gcc | |
4183 | // 2.95 did something like this). Unlinking the file would work | |
4184 | // around those permission controls, so we only unlink if the file | |
4185 | // has a non-zero size. We also unlink only regular files to avoid | |
4186 | // trouble with directories/etc. | |
4187 | // | |
4188 | // If we fail, continue; this command is merely a best-effort attempt | |
4189 | // to improve the odds for open(). | |
4190 | ||
42a1b686 | 4191 | // We let the name "-" mean "stdout" |
516cb3d0 | 4192 | if (!this->is_temporary_) |
42a1b686 | 4193 | { |
516cb3d0 ILT |
4194 | if (strcmp(this->name_, "-") == 0) |
4195 | this->o_ = STDOUT_FILENO; | |
4196 | else | |
4197 | { | |
4198 | struct stat s; | |
6a89f575 CC |
4199 | if (::stat(this->name_, &s) == 0 |
4200 | && (S_ISREG (s.st_mode) || S_ISLNK (s.st_mode))) | |
4201 | { | |
4202 | if (s.st_size != 0) | |
4203 | ::unlink(this->name_); | |
4204 | else if (!parameters->options().relocatable()) | |
4205 | { | |
4206 | // If we don't unlink the existing file, add execute | |
4207 | // permission where read permissions already exist | |
4208 | // and where the umask permits. | |
4209 | int mask = ::umask(0); | |
4210 | ::umask(mask); | |
4211 | s.st_mode |= (s.st_mode & 0444) >> 2; | |
4212 | ::chmod(this->name_, s.st_mode & ~mask); | |
4213 | } | |
4214 | } | |
516cb3d0 | 4215 | |
8851ecca | 4216 | int mode = parameters->options().relocatable() ? 0666 : 0777; |
2a00e4fb ILT |
4217 | int o = open_descriptor(-1, this->name_, O_RDWR | O_CREAT | O_TRUNC, |
4218 | mode); | |
516cb3d0 ILT |
4219 | if (o < 0) |
4220 | gold_fatal(_("%s: open: %s"), this->name_, strerror(errno)); | |
4221 | this->o_ = o; | |
4222 | } | |
42a1b686 | 4223 | } |
61ba1cf9 | 4224 | |
27bc2bce ILT |
4225 | this->map(); |
4226 | } | |
4227 | ||
4228 | // Resize the output file. | |
4229 | ||
4230 | void | |
4231 | Output_file::resize(off_t file_size) | |
4232 | { | |
c420411f ILT |
4233 | // If the mmap is mapping an anonymous memory buffer, this is easy: |
4234 | // just mremap to the new size. If it's mapping to a file, we want | |
4235 | // to unmap to flush to the file, then remap after growing the file. | |
4236 | if (this->map_is_anonymous_) | |
4237 | { | |
4238 | void* base = ::mremap(this->base_, this->file_size_, file_size, | |
4239 | MREMAP_MAYMOVE); | |
4240 | if (base == MAP_FAILED) | |
4241 | gold_fatal(_("%s: mremap: %s"), this->name_, strerror(errno)); | |
4242 | this->base_ = static_cast<unsigned char*>(base); | |
4243 | this->file_size_ = file_size; | |
4244 | } | |
4245 | else | |
4246 | { | |
4247 | this->unmap(); | |
4248 | this->file_size_ = file_size; | |
fdcac5af ILT |
4249 | if (!this->map_no_anonymous()) |
4250 | gold_fatal(_("%s: mmap: %s"), this->name_, strerror(errno)); | |
c420411f | 4251 | } |
27bc2bce ILT |
4252 | } |
4253 | ||
404c2abb ILT |
4254 | // Map an anonymous block of memory which will later be written to the |
4255 | // file. Return whether the map succeeded. | |
26736d8e | 4256 | |
404c2abb | 4257 | bool |
26736d8e ILT |
4258 | Output_file::map_anonymous() |
4259 | { | |
404c2abb ILT |
4260 | void* base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, |
4261 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
4262 | if (base != MAP_FAILED) | |
4263 | { | |
4264 | this->map_is_anonymous_ = true; | |
4265 | this->base_ = static_cast<unsigned char*>(base); | |
4266 | return true; | |
4267 | } | |
4268 | return false; | |
26736d8e ILT |
4269 | } |
4270 | ||
404c2abb | 4271 | // Map the file into memory. Return whether the mapping succeeded. |
27bc2bce | 4272 | |
404c2abb ILT |
4273 | bool |
4274 | Output_file::map_no_anonymous() | |
27bc2bce | 4275 | { |
c420411f | 4276 | const int o = this->o_; |
61ba1cf9 | 4277 | |
c420411f ILT |
4278 | // If the output file is not a regular file, don't try to mmap it; |
4279 | // instead, we'll mmap a block of memory (an anonymous buffer), and | |
4280 | // then later write the buffer to the file. | |
4281 | void* base; | |
4282 | struct stat statbuf; | |
42a1b686 ILT |
4283 | if (o == STDOUT_FILENO || o == STDERR_FILENO |
4284 | || ::fstat(o, &statbuf) != 0 | |
516cb3d0 ILT |
4285 | || !S_ISREG(statbuf.st_mode) |
4286 | || this->is_temporary_) | |
404c2abb ILT |
4287 | return false; |
4288 | ||
4289 | // Ensure that we have disk space available for the file. If we | |
4290 | // don't do this, it is possible that we will call munmap, close, | |
4291 | // and exit with dirty buffers still in the cache with no assigned | |
4292 | // disk blocks. If the disk is out of space at that point, the | |
4293 | // output file will wind up incomplete, but we will have already | |
4294 | // exited. The alternative to fallocate would be to use fdatasync, | |
4295 | // but that would be a more significant performance hit. | |
4296 | if (::posix_fallocate(o, 0, this->file_size_) < 0) | |
4297 | gold_fatal(_("%s: %s"), this->name_, strerror(errno)); | |
4298 | ||
4299 | // Map the file into memory. | |
4300 | base = ::mmap(NULL, this->file_size_, PROT_READ | PROT_WRITE, | |
4301 | MAP_SHARED, o, 0); | |
4302 | ||
4303 | // The mmap call might fail because of file system issues: the file | |
4304 | // system might not support mmap at all, or it might not support | |
4305 | // mmap with PROT_WRITE. | |
61ba1cf9 | 4306 | if (base == MAP_FAILED) |
404c2abb ILT |
4307 | return false; |
4308 | ||
4309 | this->map_is_anonymous_ = false; | |
61ba1cf9 | 4310 | this->base_ = static_cast<unsigned char*>(base); |
404c2abb ILT |
4311 | return true; |
4312 | } | |
4313 | ||
4314 | // Map the file into memory. | |
4315 | ||
4316 | void | |
4317 | Output_file::map() | |
4318 | { | |
4319 | if (this->map_no_anonymous()) | |
4320 | return; | |
4321 | ||
4322 | // The mmap call might fail because of file system issues: the file | |
4323 | // system might not support mmap at all, or it might not support | |
4324 | // mmap with PROT_WRITE. I'm not sure which errno values we will | |
4325 | // see in all cases, so if the mmap fails for any reason and we | |
4326 | // don't care about file contents, try for an anonymous map. | |
4327 | if (this->map_anonymous()) | |
4328 | return; | |
4329 | ||
4330 | gold_fatal(_("%s: mmap: failed to allocate %lu bytes for output file: %s"), | |
4331 | this->name_, static_cast<unsigned long>(this->file_size_), | |
4332 | strerror(errno)); | |
61ba1cf9 ILT |
4333 | } |
4334 | ||
c420411f | 4335 | // Unmap the file from memory. |
61ba1cf9 ILT |
4336 | |
4337 | void | |
c420411f | 4338 | Output_file::unmap() |
61ba1cf9 ILT |
4339 | { |
4340 | if (::munmap(this->base_, this->file_size_) < 0) | |
a0c4fb0a | 4341 | gold_error(_("%s: munmap: %s"), this->name_, strerror(errno)); |
61ba1cf9 | 4342 | this->base_ = NULL; |
c420411f ILT |
4343 | } |
4344 | ||
4345 | // Close the output file. | |
4346 | ||
4347 | void | |
4348 | Output_file::close() | |
4349 | { | |
4350 | // If the map isn't file-backed, we need to write it now. | |
516cb3d0 | 4351 | if (this->map_is_anonymous_ && !this->is_temporary_) |
c420411f ILT |
4352 | { |
4353 | size_t bytes_to_write = this->file_size_; | |
6d1e3092 | 4354 | size_t offset = 0; |
c420411f ILT |
4355 | while (bytes_to_write > 0) |
4356 | { | |
6d1e3092 CD |
4357 | ssize_t bytes_written = ::write(this->o_, this->base_ + offset, |
4358 | bytes_to_write); | |
c420411f ILT |
4359 | if (bytes_written == 0) |
4360 | gold_error(_("%s: write: unexpected 0 return-value"), this->name_); | |
4361 | else if (bytes_written < 0) | |
4362 | gold_error(_("%s: write: %s"), this->name_, strerror(errno)); | |
4363 | else | |
6d1e3092 CD |
4364 | { |
4365 | bytes_to_write -= bytes_written; | |
4366 | offset += bytes_written; | |
4367 | } | |
c420411f ILT |
4368 | } |
4369 | } | |
4370 | this->unmap(); | |
61ba1cf9 | 4371 | |
42a1b686 | 4372 | // We don't close stdout or stderr |
516cb3d0 ILT |
4373 | if (this->o_ != STDOUT_FILENO |
4374 | && this->o_ != STDERR_FILENO | |
4375 | && !this->is_temporary_) | |
42a1b686 ILT |
4376 | if (::close(this->o_) < 0) |
4377 | gold_error(_("%s: close: %s"), this->name_, strerror(errno)); | |
61ba1cf9 | 4378 | this->o_ = -1; |
a2fb1b05 ILT |
4379 | } |
4380 | ||
4381 | // Instantiate the templates we need. We could use the configure | |
4382 | // script to restrict this to only the ones for implemented targets. | |
4383 | ||
193a53d9 | 4384 | #ifdef HAVE_TARGET_32_LITTLE |
a2fb1b05 ILT |
4385 | template |
4386 | off_t | |
4387 | Output_section::add_input_section<32, false>( | |
730cdc88 | 4388 | Sized_relobj<32, false>* object, |
2ea97941 | 4389 | unsigned int shndx, |
a2fb1b05 | 4390 | const char* secname, |
730cdc88 | 4391 | const elfcpp::Shdr<32, false>& shdr, |
a445fddf ILT |
4392 | unsigned int reloc_shndx, |
4393 | bool have_sections_script); | |
193a53d9 | 4394 | #endif |
a2fb1b05 | 4395 | |
193a53d9 | 4396 | #ifdef HAVE_TARGET_32_BIG |
a2fb1b05 ILT |
4397 | template |
4398 | off_t | |
4399 | Output_section::add_input_section<32, true>( | |
730cdc88 | 4400 | Sized_relobj<32, true>* object, |
2ea97941 | 4401 | unsigned int shndx, |
a2fb1b05 | 4402 | const char* secname, |
730cdc88 | 4403 | const elfcpp::Shdr<32, true>& shdr, |
a445fddf ILT |
4404 | unsigned int reloc_shndx, |
4405 | bool have_sections_script); | |
193a53d9 | 4406 | #endif |
a2fb1b05 | 4407 | |
193a53d9 | 4408 | #ifdef HAVE_TARGET_64_LITTLE |
a2fb1b05 ILT |
4409 | template |
4410 | off_t | |
4411 | Output_section::add_input_section<64, false>( | |
730cdc88 | 4412 | Sized_relobj<64, false>* object, |
2ea97941 | 4413 | unsigned int shndx, |
a2fb1b05 | 4414 | const char* secname, |
730cdc88 | 4415 | const elfcpp::Shdr<64, false>& shdr, |
a445fddf ILT |
4416 | unsigned int reloc_shndx, |
4417 | bool have_sections_script); | |
193a53d9 | 4418 | #endif |
a2fb1b05 | 4419 | |
193a53d9 | 4420 | #ifdef HAVE_TARGET_64_BIG |
a2fb1b05 ILT |
4421 | template |
4422 | off_t | |
4423 | Output_section::add_input_section<64, true>( | |
730cdc88 | 4424 | Sized_relobj<64, true>* object, |
2ea97941 | 4425 | unsigned int shndx, |
a2fb1b05 | 4426 | const char* secname, |
730cdc88 | 4427 | const elfcpp::Shdr<64, true>& shdr, |
a445fddf ILT |
4428 | unsigned int reloc_shndx, |
4429 | bool have_sections_script); | |
193a53d9 | 4430 | #endif |
a2fb1b05 | 4431 | |
bbbfea06 CC |
4432 | #ifdef HAVE_TARGET_32_LITTLE |
4433 | template | |
4434 | class Output_reloc<elfcpp::SHT_REL, false, 32, false>; | |
4435 | #endif | |
4436 | ||
4437 | #ifdef HAVE_TARGET_32_BIG | |
4438 | template | |
4439 | class Output_reloc<elfcpp::SHT_REL, false, 32, true>; | |
4440 | #endif | |
4441 | ||
4442 | #ifdef HAVE_TARGET_64_LITTLE | |
4443 | template | |
4444 | class Output_reloc<elfcpp::SHT_REL, false, 64, false>; | |
4445 | #endif | |
4446 | ||
4447 | #ifdef HAVE_TARGET_64_BIG | |
4448 | template | |
4449 | class Output_reloc<elfcpp::SHT_REL, false, 64, true>; | |
4450 | #endif | |
4451 | ||
4452 | #ifdef HAVE_TARGET_32_LITTLE | |
4453 | template | |
4454 | class Output_reloc<elfcpp::SHT_REL, true, 32, false>; | |
4455 | #endif | |
4456 | ||
4457 | #ifdef HAVE_TARGET_32_BIG | |
4458 | template | |
4459 | class Output_reloc<elfcpp::SHT_REL, true, 32, true>; | |
4460 | #endif | |
4461 | ||
4462 | #ifdef HAVE_TARGET_64_LITTLE | |
4463 | template | |
4464 | class Output_reloc<elfcpp::SHT_REL, true, 64, false>; | |
4465 | #endif | |
4466 | ||
4467 | #ifdef HAVE_TARGET_64_BIG | |
4468 | template | |
4469 | class Output_reloc<elfcpp::SHT_REL, true, 64, true>; | |
4470 | #endif | |
4471 | ||
4472 | #ifdef HAVE_TARGET_32_LITTLE | |
4473 | template | |
4474 | class Output_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
4475 | #endif | |
4476 | ||
4477 | #ifdef HAVE_TARGET_32_BIG | |
4478 | template | |
4479 | class Output_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
4480 | #endif | |
4481 | ||
4482 | #ifdef HAVE_TARGET_64_LITTLE | |
4483 | template | |
4484 | class Output_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
4485 | #endif | |
4486 | ||
4487 | #ifdef HAVE_TARGET_64_BIG | |
4488 | template | |
4489 | class Output_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
4490 | #endif | |
4491 | ||
4492 | #ifdef HAVE_TARGET_32_LITTLE | |
4493 | template | |
4494 | class Output_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
4495 | #endif | |
4496 | ||
4497 | #ifdef HAVE_TARGET_32_BIG | |
4498 | template | |
4499 | class Output_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
4500 | #endif | |
4501 | ||
4502 | #ifdef HAVE_TARGET_64_LITTLE | |
4503 | template | |
4504 | class Output_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
4505 | #endif | |
4506 | ||
4507 | #ifdef HAVE_TARGET_64_BIG | |
4508 | template | |
4509 | class Output_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
4510 | #endif | |
4511 | ||
193a53d9 | 4512 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4513 | template |
4514 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, false>; | |
193a53d9 | 4515 | #endif |
c06b7b0b | 4516 | |
193a53d9 | 4517 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4518 | template |
4519 | class Output_data_reloc<elfcpp::SHT_REL, false, 32, true>; | |
193a53d9 | 4520 | #endif |
c06b7b0b | 4521 | |
193a53d9 | 4522 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4523 | template |
4524 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, false>; | |
193a53d9 | 4525 | #endif |
c06b7b0b | 4526 | |
193a53d9 | 4527 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4528 | template |
4529 | class Output_data_reloc<elfcpp::SHT_REL, false, 64, true>; | |
193a53d9 | 4530 | #endif |
c06b7b0b | 4531 | |
193a53d9 | 4532 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4533 | template |
4534 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, false>; | |
193a53d9 | 4535 | #endif |
c06b7b0b | 4536 | |
193a53d9 | 4537 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4538 | template |
4539 | class Output_data_reloc<elfcpp::SHT_REL, true, 32, true>; | |
193a53d9 | 4540 | #endif |
c06b7b0b | 4541 | |
193a53d9 | 4542 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4543 | template |
4544 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, false>; | |
193a53d9 | 4545 | #endif |
c06b7b0b | 4546 | |
193a53d9 | 4547 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4548 | template |
4549 | class Output_data_reloc<elfcpp::SHT_REL, true, 64, true>; | |
193a53d9 | 4550 | #endif |
c06b7b0b | 4551 | |
193a53d9 | 4552 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4553 | template |
4554 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, false>; | |
193a53d9 | 4555 | #endif |
c06b7b0b | 4556 | |
193a53d9 | 4557 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4558 | template |
4559 | class Output_data_reloc<elfcpp::SHT_RELA, false, 32, true>; | |
193a53d9 | 4560 | #endif |
c06b7b0b | 4561 | |
193a53d9 | 4562 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4563 | template |
4564 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, false>; | |
193a53d9 | 4565 | #endif |
c06b7b0b | 4566 | |
193a53d9 | 4567 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4568 | template |
4569 | class Output_data_reloc<elfcpp::SHT_RELA, false, 64, true>; | |
193a53d9 | 4570 | #endif |
c06b7b0b | 4571 | |
193a53d9 | 4572 | #ifdef HAVE_TARGET_32_LITTLE |
c06b7b0b ILT |
4573 | template |
4574 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, false>; | |
193a53d9 | 4575 | #endif |
c06b7b0b | 4576 | |
193a53d9 | 4577 | #ifdef HAVE_TARGET_32_BIG |
c06b7b0b ILT |
4578 | template |
4579 | class Output_data_reloc<elfcpp::SHT_RELA, true, 32, true>; | |
193a53d9 | 4580 | #endif |
c06b7b0b | 4581 | |
193a53d9 | 4582 | #ifdef HAVE_TARGET_64_LITTLE |
c06b7b0b ILT |
4583 | template |
4584 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, false>; | |
193a53d9 | 4585 | #endif |
c06b7b0b | 4586 | |
193a53d9 | 4587 | #ifdef HAVE_TARGET_64_BIG |
c06b7b0b ILT |
4588 | template |
4589 | class Output_data_reloc<elfcpp::SHT_RELA, true, 64, true>; | |
193a53d9 | 4590 | #endif |
c06b7b0b | 4591 | |
6a74a719 ILT |
4592 | #ifdef HAVE_TARGET_32_LITTLE |
4593 | template | |
4594 | class Output_relocatable_relocs<elfcpp::SHT_REL, 32, false>; | |
4595 | #endif | |
4596 | ||
4597 | #ifdef HAVE_TARGET_32_BIG | |
4598 | template | |
4599 | class Output_relocatable_relocs<elfcpp::SHT_REL, 32, true>; | |
4600 | #endif | |
4601 | ||
4602 | #ifdef HAVE_TARGET_64_LITTLE | |
4603 | template | |
4604 | class Output_relocatable_relocs<elfcpp::SHT_REL, 64, false>; | |
4605 | #endif | |
4606 | ||
4607 | #ifdef HAVE_TARGET_64_BIG | |
4608 | template | |
4609 | class Output_relocatable_relocs<elfcpp::SHT_REL, 64, true>; | |
4610 | #endif | |
4611 | ||
4612 | #ifdef HAVE_TARGET_32_LITTLE | |
4613 | template | |
4614 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 32, false>; | |
4615 | #endif | |
4616 | ||
4617 | #ifdef HAVE_TARGET_32_BIG | |
4618 | template | |
4619 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 32, true>; | |
4620 | #endif | |
4621 | ||
4622 | #ifdef HAVE_TARGET_64_LITTLE | |
4623 | template | |
4624 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 64, false>; | |
4625 | #endif | |
4626 | ||
4627 | #ifdef HAVE_TARGET_64_BIG | |
4628 | template | |
4629 | class Output_relocatable_relocs<elfcpp::SHT_RELA, 64, true>; | |
4630 | #endif | |
4631 | ||
4632 | #ifdef HAVE_TARGET_32_LITTLE | |
4633 | template | |
4634 | class Output_data_group<32, false>; | |
4635 | #endif | |
4636 | ||
4637 | #ifdef HAVE_TARGET_32_BIG | |
4638 | template | |
4639 | class Output_data_group<32, true>; | |
4640 | #endif | |
4641 | ||
4642 | #ifdef HAVE_TARGET_64_LITTLE | |
4643 | template | |
4644 | class Output_data_group<64, false>; | |
4645 | #endif | |
4646 | ||
4647 | #ifdef HAVE_TARGET_64_BIG | |
4648 | template | |
4649 | class Output_data_group<64, true>; | |
4650 | #endif | |
4651 | ||
193a53d9 | 4652 | #ifdef HAVE_TARGET_32_LITTLE |
ead1e424 | 4653 | template |
dbe717ef | 4654 | class Output_data_got<32, false>; |
193a53d9 | 4655 | #endif |
ead1e424 | 4656 | |
193a53d9 | 4657 | #ifdef HAVE_TARGET_32_BIG |
ead1e424 | 4658 | template |
dbe717ef | 4659 | class Output_data_got<32, true>; |
193a53d9 | 4660 | #endif |
ead1e424 | 4661 | |
193a53d9 | 4662 | #ifdef HAVE_TARGET_64_LITTLE |
ead1e424 | 4663 | template |
dbe717ef | 4664 | class Output_data_got<64, false>; |
193a53d9 | 4665 | #endif |
ead1e424 | 4666 | |
193a53d9 | 4667 | #ifdef HAVE_TARGET_64_BIG |
ead1e424 | 4668 | template |
dbe717ef | 4669 | class Output_data_got<64, true>; |
193a53d9 | 4670 | #endif |
ead1e424 | 4671 | |
a2fb1b05 | 4672 | } // End namespace gold. |