Commit | Line | Data |
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bae7f79e ILT |
1 | // fileread.cc -- read files for gold |
2 | ||
ecb351e9 | 3 | // Copyright 2006, 2007, 2008, 2009, 2010, 2011 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 | ||
bae7f79e ILT |
23 | #include "gold.h" |
24 | ||
bae7f79e ILT |
25 | #include <cstring> |
26 | #include <cerrno> | |
ecb351e9 | 27 | #include <climits> |
bae7f79e ILT |
28 | #include <fcntl.h> |
29 | #include <unistd.h> | |
88597d34 ILT |
30 | |
31 | #ifdef HAVE_SYS_MMAN_H | |
d1038c21 | 32 | #include <sys/mman.h> |
88597d34 | 33 | #endif |
68ed838c ILT |
34 | |
35 | #ifdef HAVE_READV | |
cb295612 | 36 | #include <sys/uio.h> |
68ed838c ILT |
37 | #endif |
38 | ||
3d857b98 | 39 | #include <sys/stat.h> |
51dee2fe | 40 | #include "filenames.h" |
bae7f79e | 41 | |
2285a610 | 42 | #include "debug.h" |
bc644c6c | 43 | #include "parameters.h" |
bae7f79e ILT |
44 | #include "options.h" |
45 | #include "dirsearch.h" | |
bc644c6c ILT |
46 | #include "target.h" |
47 | #include "binary.h" | |
2a00e4fb | 48 | #include "descriptors.h" |
114dfbe1 | 49 | #include "gold-threads.h" |
bae7f79e ILT |
50 | #include "fileread.h" |
51 | ||
88597d34 ILT |
52 | // For systems without mmap support. |
53 | #ifndef HAVE_MMAP | |
54 | # define mmap gold_mmap | |
55 | # define munmap gold_munmap | |
56 | # ifndef MAP_FAILED | |
57 | # define MAP_FAILED (reinterpret_cast<void*>(-1)) | |
58 | # endif | |
59 | # ifndef PROT_READ | |
60 | # define PROT_READ 0 | |
61 | # endif | |
62 | # ifndef MAP_PRIVATE | |
63 | # define MAP_PRIVATE 0 | |
64 | # endif | |
65 | ||
66 | # ifndef ENOSYS | |
67 | # define ENOSYS EINVAL | |
68 | # endif | |
69 | ||
70 | static void * | |
71 | gold_mmap(void *, size_t, int, int, int, off_t) | |
72 | { | |
73 | errno = ENOSYS; | |
74 | return MAP_FAILED; | |
75 | } | |
76 | ||
77 | static int | |
78 | gold_munmap(void *, size_t) | |
79 | { | |
80 | errno = ENOSYS; | |
81 | return -1; | |
82 | } | |
83 | ||
84 | #endif | |
85 | ||
d9a893b8 | 86 | #ifndef HAVE_READV |
68ed838c | 87 | struct iovec { void* iov_base; size_t iov_len; }; |
d9a893b8 ILT |
88 | ssize_t |
89 | readv(int, const iovec*, int) | |
90 | { | |
91 | gold_unreachable(); | |
92 | } | |
93 | #endif | |
94 | ||
bae7f79e ILT |
95 | namespace gold |
96 | { | |
97 | ||
cdc29364 CC |
98 | // Get the last modified time of an unopened file. |
99 | ||
100 | bool | |
101 | get_mtime(const char* filename, Timespec* mtime) | |
102 | { | |
103 | struct stat file_stat; | |
104 | ||
105 | if (stat(filename, &file_stat) < 0) | |
106 | return false; | |
107 | #ifdef HAVE_STAT_ST_MTIM | |
108 | mtime->seconds = file_stat.st_mtim.tv_sec; | |
109 | mtime->nanoseconds = file_stat.st_mtim.tv_nsec; | |
110 | #else | |
111 | mtime->seconds = file_stat.st_mtime; | |
112 | mtime->nanoseconds = 0; | |
113 | #endif | |
114 | return true; | |
115 | } | |
116 | ||
fedb228d RW |
117 | // Class File_read. |
118 | ||
119 | // A lock for the File_read static variables. | |
120 | static Lock* file_counts_lock = NULL; | |
121 | static Initialize_lock file_counts_initialize_lock(&file_counts_lock); | |
122 | ||
123 | // The File_read static variables. | |
124 | unsigned long long File_read::total_mapped_bytes; | |
125 | unsigned long long File_read::current_mapped_bytes; | |
126 | unsigned long long File_read::maximum_mapped_bytes; | |
127 | ||
bae7f79e ILT |
128 | // Class File_read::View. |
129 | ||
130 | File_read::View::~View() | |
131 | { | |
a3ad94ed | 132 | gold_assert(!this->is_locked()); |
2c849493 | 133 | switch (this->data_ownership_) |
d1038c21 | 134 | { |
2c849493 | 135 | case DATA_ALLOCATED_ARRAY: |
88597d34 | 136 | free(const_cast<unsigned char*>(this->data_)); |
2c849493 ILT |
137 | break; |
138 | case DATA_MMAPPED: | |
d1038c21 | 139 | if (::munmap(const_cast<unsigned char*>(this->data_), this->size_) != 0) |
75f2446e | 140 | gold_warning(_("munmap failed: %s"), strerror(errno)); |
fedb228d RW |
141 | if (!parameters->options_valid() || parameters->options().stats()) |
142 | { | |
143 | file_counts_initialize_lock.initialize(); | |
144 | Hold_optional_lock hl(file_counts_lock); | |
145 | File_read::current_mapped_bytes -= this->size_; | |
146 | } | |
2c849493 ILT |
147 | break; |
148 | case DATA_NOT_OWNED: | |
149 | break; | |
150 | default: | |
151 | gold_unreachable(); | |
d1038c21 | 152 | } |
bae7f79e ILT |
153 | } |
154 | ||
155 | void | |
156 | File_read::View::lock() | |
157 | { | |
158 | ++this->lock_count_; | |
159 | } | |
160 | ||
161 | void | |
162 | File_read::View::unlock() | |
163 | { | |
a3ad94ed | 164 | gold_assert(this->lock_count_ > 0); |
bae7f79e ILT |
165 | --this->lock_count_; |
166 | } | |
167 | ||
168 | bool | |
169 | File_read::View::is_locked() | |
170 | { | |
171 | return this->lock_count_ > 0; | |
172 | } | |
173 | ||
174 | // Class File_read. | |
175 | ||
bae7f79e ILT |
176 | File_read::~File_read() |
177 | { | |
17a1d0a9 | 178 | gold_assert(this->token_.is_writable()); |
2a00e4fb | 179 | if (this->is_descriptor_opened_) |
bae7f79e | 180 | { |
2a00e4fb | 181 | release_descriptor(this->descriptor_, true); |
bae7f79e | 182 | this->descriptor_ = -1; |
2a00e4fb | 183 | this->is_descriptor_opened_ = false; |
bae7f79e ILT |
184 | } |
185 | this->name_.clear(); | |
a2a5469e | 186 | this->clear_views(CLEAR_VIEWS_ALL); |
bae7f79e ILT |
187 | } |
188 | ||
5a6f7e2d ILT |
189 | // Open the file. |
190 | ||
bae7f79e | 191 | bool |
17a1d0a9 | 192 | File_read::open(const Task* task, const std::string& name) |
bae7f79e | 193 | { |
17a1d0a9 | 194 | gold_assert(this->token_.is_writable() |
a3ad94ed | 195 | && this->descriptor_ < 0 |
2a00e4fb | 196 | && !this->is_descriptor_opened_ |
a3ad94ed | 197 | && this->name_.empty()); |
bae7f79e | 198 | this->name_ = name; |
82dcae9d | 199 | |
2a00e4fb ILT |
200 | this->descriptor_ = open_descriptor(-1, this->name_.c_str(), |
201 | O_RDONLY); | |
82dcae9d ILT |
202 | |
203 | if (this->descriptor_ >= 0) | |
204 | { | |
2a00e4fb | 205 | this->is_descriptor_opened_ = true; |
82dcae9d ILT |
206 | struct stat s; |
207 | if (::fstat(this->descriptor_, &s) < 0) | |
75f2446e ILT |
208 | gold_error(_("%s: fstat failed: %s"), |
209 | this->name_.c_str(), strerror(errno)); | |
82dcae9d | 210 | this->size_ = s.st_size; |
2285a610 ILT |
211 | gold_debug(DEBUG_FILES, "Attempt to open %s succeeded", |
212 | this->name_.c_str()); | |
1e52a9c1 CS |
213 | this->token_.add_writer(task); |
214 | } | |
82dcae9d | 215 | |
bae7f79e ILT |
216 | return this->descriptor_ >= 0; |
217 | } | |
218 | ||
bc644c6c | 219 | // Open the file with the contents in memory. |
5a6f7e2d ILT |
220 | |
221 | bool | |
17a1d0a9 ILT |
222 | File_read::open(const Task* task, const std::string& name, |
223 | const unsigned char* contents, off_t size) | |
bae7f79e | 224 | { |
17a1d0a9 | 225 | gold_assert(this->token_.is_writable() |
5a6f7e2d | 226 | && this->descriptor_ < 0 |
2a00e4fb | 227 | && !this->is_descriptor_opened_ |
5a6f7e2d ILT |
228 | && this->name_.empty()); |
229 | this->name_ = name; | |
2c849493 ILT |
230 | this->whole_file_view_ = new View(0, size, contents, 0, false, |
231 | View::DATA_NOT_OWNED); | |
a2a5469e | 232 | this->add_view(this->whole_file_view_); |
82dcae9d | 233 | this->size_ = size; |
17a1d0a9 | 234 | this->token_.add_writer(task); |
5a6f7e2d | 235 | return true; |
bae7f79e ILT |
236 | } |
237 | ||
2a00e4fb ILT |
238 | // Reopen a descriptor if necessary. |
239 | ||
240 | void | |
241 | File_read::reopen_descriptor() | |
242 | { | |
243 | if (!this->is_descriptor_opened_) | |
244 | { | |
245 | this->descriptor_ = open_descriptor(this->descriptor_, | |
246 | this->name_.c_str(), | |
247 | O_RDONLY); | |
248 | if (this->descriptor_ < 0) | |
249 | gold_fatal(_("could not reopen file %s"), this->name_.c_str()); | |
250 | this->is_descriptor_opened_ = true; | |
251 | } | |
252 | } | |
253 | ||
17a1d0a9 ILT |
254 | // Release the file. This is called when we are done with the file in |
255 | // a Task. | |
256 | ||
bae7f79e | 257 | void |
17a1d0a9 | 258 | File_read::release() |
bae7f79e | 259 | { |
17a1d0a9 ILT |
260 | gold_assert(this->is_locked()); |
261 | ||
114dfbe1 ILT |
262 | if (!parameters->options_valid() || parameters->options().stats()) |
263 | { | |
264 | file_counts_initialize_lock.initialize(); | |
265 | Hold_optional_lock hl(file_counts_lock); | |
266 | File_read::total_mapped_bytes += this->mapped_bytes_; | |
267 | File_read::current_mapped_bytes += this->mapped_bytes_; | |
268 | if (File_read::current_mapped_bytes > File_read::maximum_mapped_bytes) | |
269 | File_read::maximum_mapped_bytes = File_read::current_mapped_bytes; | |
270 | } | |
271 | ||
17a1d0a9 | 272 | this->mapped_bytes_ = 0; |
17a1d0a9 | 273 | |
39d0cb0e | 274 | // Only clear views if there is only one attached object. Otherwise |
2a00e4fb ILT |
275 | // we waste time trying to clear cached archive views. Similarly |
276 | // for releasing the descriptor. | |
39d0cb0e | 277 | if (this->object_count_ <= 1) |
2a00e4fb | 278 | { |
a2a5469e | 279 | this->clear_views(CLEAR_VIEWS_NORMAL); |
2a00e4fb ILT |
280 | if (this->is_descriptor_opened_) |
281 | { | |
282 | release_descriptor(this->descriptor_, false); | |
283 | this->is_descriptor_opened_ = false; | |
284 | } | |
285 | } | |
17a1d0a9 ILT |
286 | |
287 | this->released_ = true; | |
bae7f79e ILT |
288 | } |
289 | ||
17a1d0a9 ILT |
290 | // Lock the file. |
291 | ||
bae7f79e | 292 | void |
17a1d0a9 | 293 | File_read::lock(const Task* task) |
bae7f79e | 294 | { |
17a1d0a9 ILT |
295 | gold_assert(this->released_); |
296 | this->token_.add_writer(task); | |
297 | this->released_ = false; | |
298 | } | |
e44fcf3b | 299 | |
17a1d0a9 ILT |
300 | // Unlock the file. |
301 | ||
302 | void | |
303 | File_read::unlock(const Task* task) | |
304 | { | |
305 | this->release(); | |
306 | this->token_.remove_writer(task); | |
bae7f79e ILT |
307 | } |
308 | ||
17a1d0a9 ILT |
309 | // Return whether the file is locked. |
310 | ||
bae7f79e | 311 | bool |
7004837e | 312 | File_read::is_locked() const |
bae7f79e | 313 | { |
17a1d0a9 ILT |
314 | if (!this->token_.is_writable()) |
315 | return true; | |
316 | // The file is not locked, so it should have been released. | |
317 | gold_assert(this->released_); | |
318 | return false; | |
bae7f79e ILT |
319 | } |
320 | ||
321 | // See if we have a view which covers the file starting at START for | |
322 | // SIZE bytes. Return a pointer to the View if found, NULL if not. | |
39d0cb0e ILT |
323 | // If BYTESHIFT is not -1U, the returned View must have the specified |
324 | // byte shift; otherwise, it may have any byte shift. If VSHIFTED is | |
325 | // not NULL, this sets *VSHIFTED to a view which would have worked if | |
326 | // not for the requested BYTESHIFT. | |
bae7f79e | 327 | |
ead1e424 | 328 | inline File_read::View* |
39d0cb0e ILT |
329 | File_read::find_view(off_t start, section_size_type size, |
330 | unsigned int byteshift, File_read::View** vshifted) const | |
bae7f79e | 331 | { |
39d0cb0e ILT |
332 | if (vshifted != NULL) |
333 | *vshifted = NULL; | |
334 | ||
2c849493 ILT |
335 | // If we have the whole file mmapped, and the alignment is right, |
336 | // we can return it. | |
337 | if (this->whole_file_view_) | |
338 | if (byteshift == -1U || byteshift == 0) | |
339 | return this->whole_file_view_; | |
340 | ||
ead1e424 | 341 | off_t page = File_read::page_offset(start); |
cb295612 | 342 | |
39d0cb0e ILT |
343 | unsigned int bszero = 0; |
344 | Views::const_iterator p = this->views_.upper_bound(std::make_pair(page - 1, | |
345 | bszero)); | |
346 | ||
347 | while (p != this->views_.end() && p->first.first <= page) | |
cb295612 | 348 | { |
39d0cb0e ILT |
349 | if (p->second->start() <= start |
350 | && (p->second->start() + static_cast<off_t>(p->second->size()) | |
351 | >= start + static_cast<off_t>(size))) | |
352 | { | |
353 | if (byteshift == -1U || byteshift == p->second->byteshift()) | |
354 | { | |
355 | p->second->set_accessed(); | |
356 | return p->second; | |
357 | } | |
cb295612 | 358 | |
39d0cb0e ILT |
359 | if (vshifted != NULL && *vshifted == NULL) |
360 | *vshifted = p->second; | |
361 | } | |
cb295612 | 362 | |
39d0cb0e ILT |
363 | ++p; |
364 | } | |
cb295612 | 365 | |
39d0cb0e | 366 | return NULL; |
bae7f79e ILT |
367 | } |
368 | ||
82dcae9d | 369 | // Read SIZE bytes from the file starting at offset START. Read into |
9eb9fa57 | 370 | // the buffer at P. |
bae7f79e | 371 | |
9eb9fa57 | 372 | void |
2a00e4fb | 373 | File_read::do_read(off_t start, section_size_type size, void* p) |
bae7f79e | 374 | { |
8cce6718 | 375 | ssize_t bytes; |
2c849493 | 376 | if (this->whole_file_view_ != NULL) |
bae7f79e | 377 | { |
9eb9fa57 | 378 | bytes = this->size_ - start; |
8cce6718 | 379 | if (static_cast<section_size_type>(bytes) >= size) |
9eb9fa57 | 380 | { |
2c849493 | 381 | memcpy(p, this->whole_file_view_->data() + start, size); |
9eb9fa57 ILT |
382 | return; |
383 | } | |
bae7f79e | 384 | } |
9eb9fa57 | 385 | else |
82dcae9d | 386 | { |
2a00e4fb | 387 | this->reopen_descriptor(); |
8cce6718 ILT |
388 | bytes = ::pread(this->descriptor_, p, size, start); |
389 | if (static_cast<section_size_type>(bytes) == size) | |
390 | return; | |
391 | ||
392 | if (bytes < 0) | |
9eb9fa57 | 393 | { |
75f2446e ILT |
394 | gold_fatal(_("%s: pread failed: %s"), |
395 | this->filename().c_str(), strerror(errno)); | |
396 | return; | |
9eb9fa57 | 397 | } |
bae7f79e | 398 | } |
9eb9fa57 | 399 | |
75f2446e ILT |
400 | gold_fatal(_("%s: file too short: read only %lld of %lld bytes at %lld"), |
401 | this->filename().c_str(), | |
402 | static_cast<long long>(bytes), | |
403 | static_cast<long long>(size), | |
404 | static_cast<long long>(start)); | |
bae7f79e ILT |
405 | } |
406 | ||
ba45d247 ILT |
407 | // Read data from the file. |
408 | ||
bae7f79e | 409 | void |
2a00e4fb | 410 | File_read::read(off_t start, section_size_type size, void* p) |
ba45d247 | 411 | { |
39d0cb0e | 412 | const File_read::View* pv = this->find_view(start, size, -1U, NULL); |
ba45d247 ILT |
413 | if (pv != NULL) |
414 | { | |
39d0cb0e | 415 | memcpy(p, pv->data() + (start - pv->start() + pv->byteshift()), size); |
ba45d247 ILT |
416 | return; |
417 | } | |
418 | ||
9eb9fa57 | 419 | this->do_read(start, size, p); |
bae7f79e ILT |
420 | } |
421 | ||
39d0cb0e ILT |
422 | // Add a new view. There may already be an existing view at this |
423 | // offset. If there is, the new view will be larger, and should | |
424 | // replace the old view. | |
bae7f79e | 425 | |
39d0cb0e ILT |
426 | void |
427 | File_read::add_view(File_read::View* v) | |
bae7f79e | 428 | { |
39d0cb0e ILT |
429 | std::pair<Views::iterator, bool> ins = |
430 | this->views_.insert(std::make_pair(std::make_pair(v->start(), | |
431 | v->byteshift()), | |
432 | v)); | |
433 | if (ins.second) | |
434 | return; | |
435 | ||
436 | // There was an existing view at this offset. It must not be large | |
437 | // enough. We can't delete it here, since something might be using | |
438 | // it; we put it on a list to be deleted when the file is unlocked. | |
439 | File_read::View* vold = ins.first->second; | |
440 | gold_assert(vold->size() < v->size()); | |
441 | if (vold->should_cache()) | |
cb295612 | 442 | { |
39d0cb0e ILT |
443 | v->set_cache(); |
444 | vold->clear_cache(); | |
cb295612 | 445 | } |
39d0cb0e | 446 | this->saved_views_.push_back(vold); |
cb295612 | 447 | |
39d0cb0e ILT |
448 | ins.first->second = v; |
449 | } | |
ead1e424 | 450 | |
39d0cb0e ILT |
451 | // Make a new view with a specified byteshift, reading the data from |
452 | // the file. | |
ead1e424 | 453 | |
39d0cb0e ILT |
454 | File_read::View* |
455 | File_read::make_view(off_t start, section_size_type size, | |
456 | unsigned int byteshift, bool cache) | |
457 | { | |
3f2e6a2d CC |
458 | gold_assert(size > 0); |
459 | ||
a9caad02 | 460 | // Check that start and end of the view are within the file. |
de31bda5 ILT |
461 | if (start > this->size_ |
462 | || (static_cast<unsigned long long>(size) | |
463 | > static_cast<unsigned long long>(this->size_ - start))) | |
a9caad02 CC |
464 | gold_fatal(_("%s: attempt to map %lld bytes at offset %lld exceeds " |
465 | "size of file; the file may be corrupt"), | |
466 | this->filename().c_str(), | |
467 | static_cast<long long>(size), | |
468 | static_cast<long long>(start)); | |
469 | ||
39d0cb0e | 470 | off_t poff = File_read::page_offset(start); |
ead1e424 | 471 | |
fe8718a4 | 472 | section_size_type psize = File_read::pages(size + (start - poff)); |
bae7f79e | 473 | |
8d32f935 | 474 | if (poff + static_cast<off_t>(psize) >= this->size_) |
82dcae9d ILT |
475 | { |
476 | psize = this->size_ - poff; | |
fe8718a4 | 477 | gold_assert(psize >= size); |
82dcae9d | 478 | } |
ead1e424 | 479 | |
88597d34 ILT |
480 | void* p; |
481 | View::Data_ownership ownership; | |
a2a5469e | 482 | if (byteshift != 0) |
d1038c21 | 483 | { |
88597d34 ILT |
484 | p = malloc(psize + byteshift); |
485 | if (p == NULL) | |
486 | gold_nomem(); | |
39d0cb0e | 487 | memset(p, 0, byteshift); |
88597d34 ILT |
488 | this->do_read(poff, psize, static_cast<unsigned char*>(p) + byteshift); |
489 | ownership = View::DATA_ALLOCATED_ARRAY; | |
d1038c21 ILT |
490 | } |
491 | else | |
492 | { | |
2a00e4fb | 493 | this->reopen_descriptor(); |
88597d34 ILT |
494 | p = ::mmap(NULL, psize, PROT_READ, MAP_PRIVATE, this->descriptor_, poff); |
495 | if (p != MAP_FAILED) | |
496 | { | |
497 | ownership = View::DATA_MMAPPED; | |
498 | this->mapped_bytes_ += psize; | |
499 | } | |
500 | else | |
501 | { | |
502 | p = malloc(psize); | |
503 | if (p == NULL) | |
504 | gold_nomem(); | |
505 | this->do_read(poff, psize, p); | |
506 | ownership = View::DATA_ALLOCATED_ARRAY; | |
507 | } | |
d1038c21 | 508 | } |
ead1e424 | 509 | |
88597d34 ILT |
510 | const unsigned char* pbytes = static_cast<const unsigned char*>(p); |
511 | File_read::View* v = new File_read::View(poff, psize, pbytes, byteshift, | |
512 | cache, ownership); | |
513 | ||
39d0cb0e ILT |
514 | this->add_view(v); |
515 | ||
82dcae9d | 516 | return v; |
bae7f79e ILT |
517 | } |
518 | ||
39d0cb0e ILT |
519 | // Find a View or make a new one, shifted as required by the file |
520 | // offset OFFSET and ALIGNED. | |
521 | ||
522 | File_read::View* | |
523 | File_read::find_or_make_view(off_t offset, off_t start, | |
524 | section_size_type size, bool aligned, bool cache) | |
525 | { | |
526 | unsigned int byteshift; | |
527 | if (offset == 0) | |
528 | byteshift = 0; | |
529 | else | |
530 | { | |
531 | unsigned int target_size = (!parameters->target_valid() | |
532 | ? 64 | |
533 | : parameters->target().get_size()); | |
534 | byteshift = offset & ((target_size / 8) - 1); | |
535 | ||
536 | // Set BYTESHIFT to the number of dummy bytes which must be | |
537 | // inserted before the data in order for this data to be | |
538 | // aligned. | |
539 | if (byteshift != 0) | |
540 | byteshift = (target_size / 8) - byteshift; | |
541 | } | |
542 | ||
a2a5469e CC |
543 | // If --map-whole-files is set, make sure we have a |
544 | // whole file view. Options may not yet be ready, e.g., | |
545 | // when reading a version script. We then default to | |
4a599bdd | 546 | // --no-map-whole-files. |
a2a5469e CC |
547 | if (this->whole_file_view_ == NULL |
548 | && parameters->options_valid() | |
549 | && parameters->options().map_whole_files()) | |
550 | this->whole_file_view_ = this->make_view(0, this->size_, 0, cache); | |
551 | ||
39d0cb0e ILT |
552 | // Try to find a View with the required BYTESHIFT. |
553 | File_read::View* vshifted; | |
554 | File_read::View* v = this->find_view(offset + start, size, | |
555 | aligned ? byteshift : -1U, | |
556 | &vshifted); | |
557 | if (v != NULL) | |
558 | { | |
559 | if (cache) | |
560 | v->set_cache(); | |
561 | return v; | |
562 | } | |
563 | ||
564 | // If VSHIFTED is not NULL, then it has the data we need, but with | |
565 | // the wrong byteshift. | |
566 | v = vshifted; | |
567 | if (v != NULL) | |
568 | { | |
569 | gold_assert(aligned); | |
570 | ||
88597d34 ILT |
571 | unsigned char* pbytes; |
572 | pbytes = static_cast<unsigned char*>(malloc(v->size() + byteshift)); | |
573 | if (pbytes == NULL) | |
574 | gold_nomem(); | |
39d0cb0e ILT |
575 | memset(pbytes, 0, byteshift); |
576 | memcpy(pbytes + byteshift, v->data() + v->byteshift(), v->size()); | |
577 | ||
2c849493 ILT |
578 | File_read::View* shifted_view = |
579 | new File_read::View(v->start(), v->size(), pbytes, byteshift, | |
580 | cache, View::DATA_ALLOCATED_ARRAY); | |
39d0cb0e ILT |
581 | |
582 | this->add_view(shifted_view); | |
583 | return shifted_view; | |
584 | } | |
585 | ||
586 | // Make a new view. If we don't need an aligned view, use a | |
587 | // byteshift of 0, so that we can use mmap. | |
588 | return this->make_view(offset + start, size, | |
589 | aligned ? byteshift : 0, | |
590 | cache); | |
591 | } | |
592 | ||
17a1d0a9 | 593 | // Get a view into the file. |
bae7f79e ILT |
594 | |
595 | const unsigned char* | |
39d0cb0e ILT |
596 | File_read::get_view(off_t offset, off_t start, section_size_type size, |
597 | bool aligned, bool cache) | |
ba45d247 | 598 | { |
39d0cb0e ILT |
599 | File_read::View* pv = this->find_or_make_view(offset, start, size, |
600 | aligned, cache); | |
601 | return pv->data() + (offset + start - pv->start() + pv->byteshift()); | |
bae7f79e ILT |
602 | } |
603 | ||
604 | File_view* | |
39d0cb0e ILT |
605 | File_read::get_lasting_view(off_t offset, off_t start, section_size_type size, |
606 | bool aligned, bool cache) | |
bae7f79e | 607 | { |
39d0cb0e ILT |
608 | File_read::View* pv = this->find_or_make_view(offset, start, size, |
609 | aligned, cache); | |
bae7f79e | 610 | pv->lock(); |
39d0cb0e ILT |
611 | return new File_view(*this, pv, |
612 | (pv->data() | |
613 | + (offset + start - pv->start() + pv->byteshift()))); | |
bae7f79e ILT |
614 | } |
615 | ||
cb295612 ILT |
616 | // Use readv to read COUNT entries from RM starting at START. BASE |
617 | // must be added to all file offsets in RM. | |
618 | ||
619 | void | |
620 | File_read::do_readv(off_t base, const Read_multiple& rm, size_t start, | |
621 | size_t count) | |
622 | { | |
623 | unsigned char discard[File_read::page_size]; | |
624 | iovec iov[File_read::max_readv_entries * 2]; | |
625 | size_t iov_index = 0; | |
626 | ||
627 | off_t first_offset = rm[start].file_offset; | |
628 | off_t last_offset = first_offset; | |
629 | ssize_t want = 0; | |
630 | for (size_t i = 0; i < count; ++i) | |
631 | { | |
632 | const Read_multiple_entry& i_entry(rm[start + i]); | |
633 | ||
634 | if (i_entry.file_offset > last_offset) | |
635 | { | |
636 | size_t skip = i_entry.file_offset - last_offset; | |
637 | gold_assert(skip <= sizeof discard); | |
638 | ||
639 | iov[iov_index].iov_base = discard; | |
640 | iov[iov_index].iov_len = skip; | |
641 | ++iov_index; | |
642 | ||
643 | want += skip; | |
644 | } | |
645 | ||
646 | iov[iov_index].iov_base = i_entry.buffer; | |
647 | iov[iov_index].iov_len = i_entry.size; | |
648 | ++iov_index; | |
649 | ||
650 | want += i_entry.size; | |
651 | ||
652 | last_offset = i_entry.file_offset + i_entry.size; | |
653 | } | |
654 | ||
2a00e4fb ILT |
655 | this->reopen_descriptor(); |
656 | ||
cb295612 ILT |
657 | gold_assert(iov_index < sizeof iov / sizeof iov[0]); |
658 | ||
659 | if (::lseek(this->descriptor_, base + first_offset, SEEK_SET) < 0) | |
660 | gold_fatal(_("%s: lseek failed: %s"), | |
661 | this->filename().c_str(), strerror(errno)); | |
662 | ||
663 | ssize_t got = ::readv(this->descriptor_, iov, iov_index); | |
664 | ||
665 | if (got < 0) | |
666 | gold_fatal(_("%s: readv failed: %s"), | |
667 | this->filename().c_str(), strerror(errno)); | |
668 | if (got != want) | |
669 | gold_fatal(_("%s: file too short: read only %zd of %zd bytes at %lld"), | |
670 | this->filename().c_str(), | |
671 | got, want, static_cast<long long>(base + first_offset)); | |
672 | } | |
673 | ||
ecb351e9 ILT |
674 | // Portable IOV_MAX. |
675 | ||
676 | #if !defined(HAVE_READV) | |
677 | #define GOLD_IOV_MAX 1 | |
678 | #elif defined(IOV_MAX) | |
679 | #define GOLD_IOV_MAX IOV_MAX | |
680 | #else | |
681 | #define GOLD_IOV_MAX (File_read::max_readv_entries * 2) | |
682 | #endif | |
683 | ||
cb295612 ILT |
684 | // Read several pieces of data from the file. |
685 | ||
686 | void | |
687 | File_read::read_multiple(off_t base, const Read_multiple& rm) | |
688 | { | |
ecb351e9 | 689 | static size_t iov_max = GOLD_IOV_MAX; |
cb295612 ILT |
690 | size_t count = rm.size(); |
691 | size_t i = 0; | |
692 | while (i < count) | |
693 | { | |
694 | // Find up to MAX_READV_ENTRIES consecutive entries which are | |
695 | // less than one page apart. | |
696 | const Read_multiple_entry& i_entry(rm[i]); | |
697 | off_t i_off = i_entry.file_offset; | |
698 | off_t end_off = i_off + i_entry.size; | |
699 | size_t j; | |
700 | for (j = i + 1; j < count; ++j) | |
701 | { | |
ecb351e9 | 702 | if (j - i >= File_read::max_readv_entries || j - i >= iov_max / 2) |
cb295612 ILT |
703 | break; |
704 | const Read_multiple_entry& j_entry(rm[j]); | |
705 | off_t j_off = j_entry.file_offset; | |
706 | gold_assert(j_off >= end_off); | |
707 | off_t j_end_off = j_off + j_entry.size; | |
708 | if (j_end_off - end_off >= File_read::page_size) | |
709 | break; | |
710 | end_off = j_end_off; | |
711 | } | |
712 | ||
713 | if (j == i + 1) | |
714 | this->read(base + i_off, i_entry.size, i_entry.buffer); | |
715 | else | |
716 | { | |
717 | File_read::View* view = this->find_view(base + i_off, | |
39d0cb0e ILT |
718 | end_off - i_off, |
719 | -1U, NULL); | |
cb295612 ILT |
720 | if (view == NULL) |
721 | this->do_readv(base, rm, i, j - i); | |
722 | else | |
723 | { | |
724 | const unsigned char* v = (view->data() | |
39d0cb0e ILT |
725 | + (base + i_off - view->start() |
726 | + view->byteshift())); | |
cb295612 ILT |
727 | for (size_t k = i; k < j; ++k) |
728 | { | |
729 | const Read_multiple_entry& k_entry(rm[k]); | |
be2f3dec ILT |
730 | gold_assert((convert_to_section_size_type(k_entry.file_offset |
731 | - i_off) | |
732 | + k_entry.size) | |
733 | <= convert_to_section_size_type(end_off | |
734 | - i_off)); | |
cb295612 ILT |
735 | memcpy(k_entry.buffer, |
736 | v + (k_entry.file_offset - i_off), | |
737 | k_entry.size); | |
738 | } | |
739 | } | |
740 | } | |
741 | ||
742 | i = j; | |
743 | } | |
744 | } | |
745 | ||
746 | // Mark all views as no longer cached. | |
747 | ||
748 | void | |
749 | File_read::clear_view_cache_marks() | |
750 | { | |
751 | // Just ignore this if there are multiple objects associated with | |
752 | // the file. Otherwise we will wind up uncaching and freeing some | |
753 | // views for other objects. | |
754 | if (this->object_count_ > 1) | |
755 | return; | |
756 | ||
757 | for (Views::iterator p = this->views_.begin(); | |
758 | p != this->views_.end(); | |
759 | ++p) | |
760 | p->second->clear_cache(); | |
761 | for (Saved_views::iterator p = this->saved_views_.begin(); | |
762 | p != this->saved_views_.end(); | |
763 | ++p) | |
764 | (*p)->clear_cache(); | |
765 | } | |
766 | ||
767 | // Remove all the file views. For a file which has multiple | |
768 | // associated objects (i.e., an archive), we keep accessed views | |
769 | // around until next time, in the hopes that they will be useful for | |
770 | // the next object. | |
bae7f79e ILT |
771 | |
772 | void | |
a2a5469e | 773 | File_read::clear_views(Clear_views_mode mode) |
bae7f79e | 774 | { |
a2a5469e CC |
775 | bool keep_files_mapped = (parameters->options_valid() |
776 | && parameters->options().keep_files_mapped()); | |
fcf29b24 ILT |
777 | Views::iterator p = this->views_.begin(); |
778 | while (p != this->views_.end()) | |
bae7f79e | 779 | { |
cb295612 | 780 | bool should_delete; |
a2a5469e | 781 | if (p->second->is_locked() || p->second->is_permanent_view()) |
cb295612 | 782 | should_delete = false; |
a2a5469e | 783 | else if (mode == CLEAR_VIEWS_ALL) |
cb295612 | 784 | should_delete = true; |
a19fefdc ILT |
785 | else if ((p->second->should_cache() |
786 | || p->second == this->whole_file_view_) | |
787 | && keep_files_mapped) | |
cb295612 | 788 | should_delete = false; |
a2a5469e CC |
789 | else if (this->object_count_ > 1 |
790 | && p->second->accessed() | |
791 | && mode != CLEAR_VIEWS_ARCHIVE) | |
cb295612 ILT |
792 | should_delete = false; |
793 | else | |
794 | should_delete = true; | |
795 | ||
796 | if (should_delete) | |
fcf29b24 | 797 | { |
a2a5469e CC |
798 | if (p->second == this->whole_file_view_) |
799 | this->whole_file_view_ = NULL; | |
fcf29b24 ILT |
800 | delete p->second; |
801 | ||
802 | // map::erase invalidates only the iterator to the deleted | |
803 | // element. | |
804 | Views::iterator pe = p; | |
805 | ++p; | |
806 | this->views_.erase(pe); | |
807 | } | |
ead1e424 | 808 | else |
bae7f79e | 809 | { |
cb295612 | 810 | p->second->clear_accessed(); |
fcf29b24 | 811 | ++p; |
bae7f79e | 812 | } |
ead1e424 | 813 | } |
ead1e424 | 814 | |
fcf29b24 ILT |
815 | Saved_views::iterator q = this->saved_views_.begin(); |
816 | while (q != this->saved_views_.end()) | |
ead1e424 | 817 | { |
cb295612 | 818 | if (!(*q)->is_locked()) |
bae7f79e | 819 | { |
fcf29b24 ILT |
820 | delete *q; |
821 | q = this->saved_views_.erase(q); | |
ead1e424 ILT |
822 | } |
823 | else | |
824 | { | |
a2a5469e | 825 | gold_assert(mode != CLEAR_VIEWS_ALL); |
fcf29b24 | 826 | ++q; |
bae7f79e ILT |
827 | } |
828 | } | |
829 | } | |
830 | ||
e44fcf3b ILT |
831 | // Print statistical information to stderr. This is used for --stats. |
832 | ||
833 | void | |
834 | File_read::print_stats() | |
835 | { | |
836 | fprintf(stderr, _("%s: total bytes mapped for read: %llu\n"), | |
837 | program_name, File_read::total_mapped_bytes); | |
838 | fprintf(stderr, _("%s: maximum bytes mapped for read at one time: %llu\n"), | |
839 | program_name, File_read::maximum_mapped_bytes); | |
840 | } | |
841 | ||
bae7f79e ILT |
842 | // Class File_view. |
843 | ||
844 | File_view::~File_view() | |
845 | { | |
a3ad94ed | 846 | gold_assert(this->file_.is_locked()); |
bae7f79e ILT |
847 | this->view_->unlock(); |
848 | } | |
849 | ||
850 | // Class Input_file. | |
851 | ||
5a6f7e2d ILT |
852 | // Create a file for testing. |
853 | ||
2ea97941 | 854 | Input_file::Input_file(const Task* task, const char* name, |
17a1d0a9 | 855 | const unsigned char* contents, off_t size) |
5a6f7e2d ILT |
856 | : file_() |
857 | { | |
858 | this->input_argument_ = | |
2ea97941 | 859 | new Input_file_argument(name, Input_file_argument::INPUT_FILE_TYPE_FILE, |
ae3b5189 | 860 | "", false, Position_dependent_options()); |
2ea97941 | 861 | bool ok = this->file_.open(task, name, contents, size); |
5a6f7e2d ILT |
862 | gold_assert(ok); |
863 | } | |
864 | ||
14144f39 ILT |
865 | // Return the position dependent options in force for this file. |
866 | ||
867 | const Position_dependent_options& | |
868 | Input_file::options() const | |
869 | { | |
870 | return this->input_argument_->options(); | |
871 | } | |
872 | ||
873 | // Return the name given by the user. For -lc this will return "c". | |
874 | ||
875 | const char* | |
876 | Input_file::name() const | |
88dd47ac ILT |
877 | { |
878 | return this->input_argument_->name(); | |
879 | } | |
880 | ||
fd9d194f ILT |
881 | // Return whether this file is in a system directory. |
882 | ||
883 | bool | |
884 | Input_file::is_in_system_directory() const | |
885 | { | |
886 | if (this->is_in_sysroot()) | |
887 | return true; | |
888 | return parameters->options().is_in_system_directory(this->filename()); | |
889 | } | |
890 | ||
88dd47ac ILT |
891 | // Return whether we are only reading symbols. |
892 | ||
893 | bool | |
894 | Input_file::just_symbols() const | |
895 | { | |
896 | return this->input_argument_->just_symbols(); | |
897 | } | |
14144f39 | 898 | |
15f8229b ILT |
899 | // Return whether this is a file that we will search for in the list |
900 | // of directories. | |
901 | ||
902 | bool | |
903 | Input_file::will_search_for() const | |
904 | { | |
905 | return (!IS_ABSOLUTE_PATH(this->input_argument_->name()) | |
906 | && (this->input_argument_->is_lib() | |
ae3b5189 | 907 | || this->input_argument_->is_searched_file() |
15f8229b ILT |
908 | || this->input_argument_->extra_search_path() != NULL)); |
909 | } | |
910 | ||
98fa85cb ILT |
911 | // Return the file last modification time. Calls gold_fatal if the stat |
912 | // system call failed. | |
913 | ||
914 | Timespec | |
915 | File_read::get_mtime() | |
916 | { | |
917 | struct stat file_stat; | |
918 | this->reopen_descriptor(); | |
cdc29364 | 919 | |
98fa85cb ILT |
920 | if (fstat(this->descriptor_, &file_stat) < 0) |
921 | gold_fatal(_("%s: stat failed: %s"), this->name_.c_str(), | |
922 | strerror(errno)); | |
5d329b7d ILT |
923 | #ifdef HAVE_STAT_ST_MTIM |
924 | return Timespec(file_stat.st_mtim.tv_sec, file_stat.st_mtim.tv_nsec); | |
925 | #else | |
98fa85cb | 926 | return Timespec(file_stat.st_mtime, 0); |
5d329b7d | 927 | #endif |
98fa85cb ILT |
928 | } |
929 | ||
69517287 | 930 | // Try to find a file in the extra search dirs. Returns true on success. |
42218b9f | 931 | |
69517287 RÁE |
932 | bool |
933 | Input_file::try_extra_search_path(int* pindex, | |
934 | const Input_file_argument* input_argument, | |
935 | std::string filename, std::string* found_name, | |
936 | std::string* namep) | |
937 | { | |
42218b9f RÁE |
938 | if (input_argument->extra_search_path() == NULL) |
939 | return false; | |
940 | ||
941 | std::string name = input_argument->extra_search_path(); | |
69517287 | 942 | if (!IS_DIR_SEPARATOR(name[name.length() - 1])) |
42218b9f RÁE |
943 | name += '/'; |
944 | name += filename; | |
945 | ||
946 | struct stat dummy_stat; | |
947 | if (*pindex > 0 || ::stat(name.c_str(), &dummy_stat) < 0) | |
948 | return false; | |
949 | ||
950 | *found_name = filename; | |
951 | *namep = name; | |
952 | return true; | |
953 | } | |
5a6f7e2d | 954 | |
42218b9f | 955 | // Find the actual file. |
51dee2fe ILT |
956 | // If the filename is not absolute, we assume it is in the current |
957 | // directory *except* when: | |
ae3b5189 CD |
958 | // A) input_argument_->is_lib() is true; |
959 | // B) input_argument_->is_searched_file() is true; or | |
960 | // C) input_argument_->extra_search_path() is not empty. | |
961 | // In each, we look in extra_search_path + library_path to find | |
51dee2fe ILT |
962 | // the file location, rather than the current directory. |
963 | ||
69517287 RÁE |
964 | bool |
965 | Input_file::find_file(const Dirsearch& dirpath, int* pindex, | |
966 | const Input_file_argument* input_argument, | |
967 | bool* is_in_sysroot, | |
968 | std::string* found_name, std::string* namep) | |
bae7f79e | 969 | { |
2ea97941 | 970 | std::string name; |
51dee2fe ILT |
971 | |
972 | // Case 1: name is an absolute file, just try to open it | |
ae3b5189 CD |
973 | // Case 2: name is relative but is_lib is false, is_searched_file is false, |
974 | // and extra_search_path is empty | |
42218b9f RÁE |
975 | if (IS_ABSOLUTE_PATH(input_argument->name()) |
976 | || (!input_argument->is_lib() | |
977 | && !input_argument->is_searched_file() | |
978 | && input_argument->extra_search_path() == NULL)) | |
e2aacd2c | 979 | { |
42218b9f RÁE |
980 | name = input_argument->name(); |
981 | *found_name = name; | |
982 | *namep = name; | |
983 | return true; | |
e2aacd2c | 984 | } |
ae3b5189 | 985 | // Case 3: is_lib is true or is_searched_file is true |
42218b9f RÁE |
986 | else if (input_argument->is_lib() |
987 | || input_argument->is_searched_file()) | |
bae7f79e | 988 | { |
ae3b5189 | 989 | std::string n1, n2; |
42218b9f | 990 | if (input_argument->is_lib()) |
f6ce93d6 | 991 | { |
ae3b5189 | 992 | n1 = "lib"; |
42218b9f | 993 | n1 += input_argument->name(); |
ae3b5189 | 994 | if (parameters->options().is_static() |
42218b9f | 995 | || !input_argument->options().Bdynamic()) |
ae3b5189 CD |
996 | n1 += ".a"; |
997 | else | |
998 | { | |
999 | n2 = n1 + ".a"; | |
1000 | n1 += ".so"; | |
1001 | } | |
f6ce93d6 | 1002 | } |
ae3b5189 | 1003 | else |
42218b9f RÁE |
1004 | n1 = input_argument->name(); |
1005 | ||
69517287 RÁE |
1006 | if (Input_file::try_extra_search_path(pindex, input_argument, n1, |
1007 | found_name, namep)) | |
42218b9f RÁE |
1008 | return true; |
1009 | ||
69517287 RÁE |
1010 | if (!n2.empty() && Input_file::try_extra_search_path(pindex, |
1011 | input_argument, n2, | |
1012 | found_name, namep)) | |
42218b9f RÁE |
1013 | return true; |
1014 | ||
1015 | // It is not in the extra_search_path. | |
1016 | name = dirpath.find(n1, n2, is_in_sysroot, pindex); | |
2ea97941 | 1017 | if (name.empty()) |
bae7f79e | 1018 | { |
ae3b5189 | 1019 | gold_error(_("cannot find %s%s"), |
42218b9f RÁE |
1020 | input_argument->is_lib() ? "-l" : "", |
1021 | input_argument->name()); | |
75f2446e | 1022 | return false; |
bae7f79e | 1023 | } |
2ea97941 | 1024 | if (n2.empty() || name[name.length() - 1] == 'o') |
42218b9f | 1025 | *found_name = n1; |
e2aacd2c | 1026 | else |
42218b9f RÁE |
1027 | *found_name = n2; |
1028 | *namep = name; | |
1029 | return true; | |
bae7f79e | 1030 | } |
51dee2fe ILT |
1031 | // Case 4: extra_search_path is not empty |
1032 | else | |
1033 | { | |
42218b9f RÁE |
1034 | gold_assert(input_argument->extra_search_path() != NULL); |
1035 | ||
1036 | if (try_extra_search_path(pindex, input_argument, input_argument->name(), | |
1037 | found_name, namep)) | |
1038 | return true; | |
1039 | ||
1040 | // extra_search_path failed, so check the normal search-path. | |
1041 | int index = *pindex; | |
1042 | if (index > 0) | |
1043 | --index; | |
1044 | name = dirpath.find(input_argument->name(), "", | |
1045 | is_in_sysroot, &index); | |
1046 | if (name.empty()) | |
51dee2fe | 1047 | { |
42218b9f RÁE |
1048 | gold_error(_("cannot find %s"), |
1049 | input_argument->name()); | |
1050 | return false; | |
51dee2fe | 1051 | } |
7411e9a8 RS |
1052 | *found_name = input_argument->name(); |
1053 | *namep = name; | |
42218b9f RÁE |
1054 | *pindex = index + 1; |
1055 | return true; | |
51dee2fe | 1056 | } |
42218b9f RÁE |
1057 | } |
1058 | ||
1059 | // Open the file. | |
1060 | ||
1061 | bool | |
ca09d69a | 1062 | Input_file::open(const Dirsearch& dirpath, const Task* task, int* pindex) |
42218b9f RÁE |
1063 | { |
1064 | std::string name; | |
69517287 RÁE |
1065 | if (!Input_file::find_file(dirpath, pindex, this->input_argument_, |
1066 | &this->is_in_sysroot_, &this->found_name_, &name)) | |
42218b9f | 1067 | return false; |
51dee2fe ILT |
1068 | |
1069 | // Now that we've figured out where the file lives, try to open it. | |
bc644c6c ILT |
1070 | |
1071 | General_options::Object_format format = | |
7cc619c3 | 1072 | this->input_argument_->options().format_enum(); |
bc644c6c ILT |
1073 | bool ok; |
1074 | if (format == General_options::OBJECT_FORMAT_ELF) | |
10165461 DK |
1075 | { |
1076 | ok = this->file_.open(task, name); | |
1077 | this->format_ = FORMAT_ELF; | |
1078 | } | |
bc644c6c ILT |
1079 | else |
1080 | { | |
1081 | gold_assert(format == General_options::OBJECT_FORMAT_BINARY); | |
2ea97941 | 1082 | ok = this->open_binary(task, name); |
10165461 | 1083 | this->format_ = FORMAT_BINARY; |
bc644c6c ILT |
1084 | } |
1085 | ||
1086 | if (!ok) | |
bae7f79e | 1087 | { |
a0c4fb0a | 1088 | gold_error(_("cannot open %s: %s"), |
2ea97941 | 1089 | name.c_str(), strerror(errno)); |
10165461 | 1090 | this->format_ = FORMAT_NONE; |
75f2446e | 1091 | return false; |
bae7f79e | 1092 | } |
75f2446e ILT |
1093 | |
1094 | return true; | |
bae7f79e ILT |
1095 | } |
1096 | ||
bc644c6c ILT |
1097 | // Open a file for --format binary. |
1098 | ||
1099 | bool | |
2ea97941 | 1100 | Input_file::open_binary(const Task* task, const std::string& name) |
bc644c6c ILT |
1101 | { |
1102 | // In order to open a binary file, we need machine code, size, and | |
0daa6f62 ILT |
1103 | // endianness. We may not have a valid target at this point, in |
1104 | // which case we use the default target. | |
029ba973 ILT |
1105 | parameters_force_valid_target(); |
1106 | const Target& target(parameters->target()); | |
bc644c6c | 1107 | |
029ba973 ILT |
1108 | Binary_to_elf binary_to_elf(target.machine_code(), |
1109 | target.get_size(), | |
1110 | target.is_big_endian(), | |
2ea97941 | 1111 | name); |
bc644c6c ILT |
1112 | if (!binary_to_elf.convert(task)) |
1113 | return false; | |
2ea97941 | 1114 | return this->file_.open(task, name, binary_to_elf.converted_data_leak(), |
bc644c6c ILT |
1115 | binary_to_elf.converted_size()); |
1116 | } | |
1117 | ||
bae7f79e | 1118 | } // End namespace gold. |