1 // fileread.cc -- read files for gold
3 // Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
4 // Free Software Foundation, Inc.
5 // Written by Ian Lance Taylor <iant@google.com>.
7 // This file is part of gold.
9 // This program is free software; you can redistribute it and/or modify
10 // it under the terms of the GNU General Public License as published by
11 // the Free Software Foundation; either version 3 of the License, or
12 // (at your option) any later version.
14 // This program is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 // MA 02110-1301, USA.
32 #ifdef HAVE_SYS_MMAN_H
41 #include "filenames.h"
44 #include "parameters.h"
46 #include "dirsearch.h"
49 #include "descriptors.h"
50 #include "gold-threads.h"
53 // For systems without mmap support.
55 # define mmap gold_mmap
56 # define munmap gold_munmap
58 # define MAP_FAILED (reinterpret_cast<void*>(-1))
64 # define MAP_PRIVATE 0
68 # define ENOSYS EINVAL
72 gold_mmap(void *, size_t, int, int, int, off_t)
79 gold_munmap(void *, size_t)
88 struct iovec { void* iov_base; size_t iov_len; };
90 readv(int, const iovec*, int)
99 // Get the last modified time of an unopened file.
102 get_mtime(const char* filename, Timespec* mtime)
104 struct stat file_stat;
106 if (stat(filename, &file_stat) < 0)
108 #ifdef HAVE_STAT_ST_MTIM
109 mtime->seconds = file_stat.st_mtim.tv_sec;
110 mtime->nanoseconds = file_stat.st_mtim.tv_nsec;
112 mtime->seconds = file_stat.st_mtime;
113 mtime->nanoseconds = 0;
120 // A lock for the File_read static variables.
121 static Lock* file_counts_lock = NULL;
122 static Initialize_lock file_counts_initialize_lock(&file_counts_lock);
124 // The File_read static variables.
125 unsigned long long File_read::total_mapped_bytes;
126 unsigned long long File_read::current_mapped_bytes;
127 unsigned long long File_read::maximum_mapped_bytes;
129 // Class File_read::View.
131 File_read::View::~View()
133 gold_assert(!this->is_locked());
134 switch (this->data_ownership_)
136 case DATA_ALLOCATED_ARRAY:
137 free(const_cast<unsigned char*>(this->data_));
140 if (::munmap(const_cast<unsigned char*>(this->data_), this->size_) != 0)
141 gold_warning(_("munmap failed: %s"), strerror(errno));
142 if (!parameters->options_valid() || parameters->options().stats())
144 file_counts_initialize_lock.initialize();
145 Hold_optional_lock hl(file_counts_lock);
146 File_read::current_mapped_bytes -= this->size_;
157 File_read::View::lock()
163 File_read::View::unlock()
165 gold_assert(this->lock_count_ > 0);
170 File_read::View::is_locked()
172 return this->lock_count_ > 0;
177 File_read::~File_read()
179 gold_assert(this->token_.is_writable());
180 if (this->is_descriptor_opened_)
182 release_descriptor(this->descriptor_, true);
183 this->descriptor_ = -1;
184 this->is_descriptor_opened_ = false;
187 this->clear_views(CLEAR_VIEWS_ALL);
193 File_read::open(const Task* task, const std::string& name)
195 gold_assert(this->token_.is_writable()
196 && this->descriptor_ < 0
197 && !this->is_descriptor_opened_
198 && this->name_.empty());
201 this->descriptor_ = open_descriptor(-1, this->name_.c_str(),
204 if (this->descriptor_ >= 0)
206 this->is_descriptor_opened_ = true;
208 if (::fstat(this->descriptor_, &s) < 0)
209 gold_error(_("%s: fstat failed: %s"),
210 this->name_.c_str(), strerror(errno));
211 this->size_ = s.st_size;
212 gold_debug(DEBUG_FILES, "Attempt to open %s succeeded",
213 this->name_.c_str());
214 this->token_.add_writer(task);
217 return this->descriptor_ >= 0;
220 // Open the file with the contents in memory.
223 File_read::open(const Task* task, const std::string& name,
224 const unsigned char* contents, off_t size)
226 gold_assert(this->token_.is_writable()
227 && this->descriptor_ < 0
228 && !this->is_descriptor_opened_
229 && this->name_.empty());
231 this->whole_file_view_ = new View(0, size, contents, 0, false,
232 View::DATA_NOT_OWNED);
233 this->add_view(this->whole_file_view_);
235 this->token_.add_writer(task);
239 // Reopen a descriptor if necessary.
242 File_read::reopen_descriptor()
244 if (!this->is_descriptor_opened_)
246 this->descriptor_ = open_descriptor(this->descriptor_,
249 if (this->descriptor_ < 0)
250 gold_fatal(_("could not reopen file %s"), this->name_.c_str());
251 this->is_descriptor_opened_ = true;
255 // Release the file. This is called when we are done with the file in
261 gold_assert(this->is_locked());
263 if (!parameters->options_valid() || parameters->options().stats())
265 file_counts_initialize_lock.initialize();
266 Hold_optional_lock hl(file_counts_lock);
267 File_read::total_mapped_bytes += this->mapped_bytes_;
268 File_read::current_mapped_bytes += this->mapped_bytes_;
269 if (File_read::current_mapped_bytes > File_read::maximum_mapped_bytes)
270 File_read::maximum_mapped_bytes = File_read::current_mapped_bytes;
273 this->mapped_bytes_ = 0;
275 // Only clear views if there is only one attached object. Otherwise
276 // we waste time trying to clear cached archive views. Similarly
277 // for releasing the descriptor.
278 if (this->object_count_ <= 1)
280 this->clear_views(CLEAR_VIEWS_NORMAL);
281 if (this->is_descriptor_opened_)
283 release_descriptor(this->descriptor_, false);
284 this->is_descriptor_opened_ = false;
288 this->released_ = true;
294 File_read::lock(const Task* task)
296 gold_assert(this->released_);
297 this->token_.add_writer(task);
298 this->released_ = false;
304 File_read::unlock(const Task* task)
307 this->token_.remove_writer(task);
310 // Return whether the file is locked.
313 File_read::is_locked() const
315 if (!this->token_.is_writable())
317 // The file is not locked, so it should have been released.
318 gold_assert(this->released_);
322 // See if we have a view which covers the file starting at START for
323 // SIZE bytes. Return a pointer to the View if found, NULL if not.
324 // If BYTESHIFT is not -1U, the returned View must have the specified
325 // byte shift; otherwise, it may have any byte shift. If VSHIFTED is
326 // not NULL, this sets *VSHIFTED to a view which would have worked if
327 // not for the requested BYTESHIFT.
329 inline File_read::View*
330 File_read::find_view(off_t start, section_size_type size,
331 unsigned int byteshift, File_read::View** vshifted) const
333 gold_assert(start <= this->size_
334 && (static_cast<unsigned long long>(size)
335 <= static_cast<unsigned long long>(this->size_ - start)));
337 if (vshifted != NULL)
340 // If we have the whole file mmapped, and the alignment is right,
342 if (this->whole_file_view_)
343 if (byteshift == -1U || byteshift == 0)
344 return this->whole_file_view_;
346 off_t page = File_read::page_offset(start);
348 unsigned int bszero = 0;
349 Views::const_iterator p = this->views_.upper_bound(std::make_pair(page - 1,
352 while (p != this->views_.end() && p->first.first <= page)
354 if (p->second->start() <= start
355 && (p->second->start() + static_cast<off_t>(p->second->size())
356 >= start + static_cast<off_t>(size)))
358 if (byteshift == -1U || byteshift == p->second->byteshift())
360 p->second->set_accessed();
364 if (vshifted != NULL && *vshifted == NULL)
365 *vshifted = p->second;
374 // Read SIZE bytes from the file starting at offset START. Read into
378 File_read::do_read(off_t start, section_size_type size, void* p)
381 if (this->whole_file_view_ != NULL)
383 bytes = this->size_ - start;
384 if (static_cast<section_size_type>(bytes) >= size)
386 memcpy(p, this->whole_file_view_->data() + start, size);
392 this->reopen_descriptor();
394 char *read_ptr = static_cast<char *>(p);
395 off_t read_pos = start;
396 size_t to_read = size;
399 bytes = ::pread(this->descriptor_, read_ptr, to_read, read_pos);
401 gold_fatal(_("%s: pread failed: %s"),
402 this->filename().c_str(), strerror(errno));
412 bytes = size - to_read;
415 gold_fatal(_("%s: file too short: read only %lld of %lld bytes at %lld"),
416 this->filename().c_str(),
417 static_cast<long long>(bytes),
418 static_cast<long long>(size),
419 static_cast<long long>(start));
422 // Read data from the file.
425 File_read::read(off_t start, section_size_type size, void* p)
427 const File_read::View* pv = this->find_view(start, size, -1U, NULL);
430 memcpy(p, pv->data() + (start - pv->start() + pv->byteshift()), size);
434 this->do_read(start, size, p);
437 // Add a new view. There may already be an existing view at this
438 // offset. If there is, the new view will be larger, and should
439 // replace the old view.
442 File_read::add_view(File_read::View* v)
444 std::pair<Views::iterator, bool> ins =
445 this->views_.insert(std::make_pair(std::make_pair(v->start(),
451 // There was an existing view at this offset. It must not be large
452 // enough. We can't delete it here, since something might be using
453 // it; we put it on a list to be deleted when the file is unlocked.
454 File_read::View* vold = ins.first->second;
455 gold_assert(vold->size() < v->size());
456 if (vold->should_cache())
461 this->saved_views_.push_back(vold);
463 ins.first->second = v;
466 // Make a new view with a specified byteshift, reading the data from
470 File_read::make_view(off_t start, section_size_type size,
471 unsigned int byteshift, bool cache)
473 gold_assert(size > 0);
474 gold_assert(start <= this->size_
475 && (static_cast<unsigned long long>(size)
476 <= static_cast<unsigned long long>(this->size_ - start)));
478 off_t poff = File_read::page_offset(start);
480 section_size_type psize = File_read::pages(size + (start - poff));
482 if (poff + static_cast<off_t>(psize) >= this->size_)
484 psize = this->size_ - poff;
485 gold_assert(psize >= size);
489 View::Data_ownership ownership;
492 p = malloc(psize + byteshift);
495 memset(p, 0, byteshift);
496 this->do_read(poff, psize, static_cast<unsigned char*>(p) + byteshift);
497 ownership = View::DATA_ALLOCATED_ARRAY;
501 this->reopen_descriptor();
502 p = ::mmap(NULL, psize, PROT_READ, MAP_PRIVATE, this->descriptor_, poff);
505 ownership = View::DATA_MMAPPED;
506 this->mapped_bytes_ += psize;
513 this->do_read(poff, psize, p);
514 ownership = View::DATA_ALLOCATED_ARRAY;
518 const unsigned char* pbytes = static_cast<const unsigned char*>(p);
519 File_read::View* v = new File_read::View(poff, psize, pbytes, byteshift,
527 // Find a View or make a new one, shifted as required by the file
528 // offset OFFSET and ALIGNED.
531 File_read::find_or_make_view(off_t offset, off_t start,
532 section_size_type size, bool aligned, bool cache)
534 // Check that start and end of the view are within the file.
535 if (start > this->size_
536 || (static_cast<unsigned long long>(size)
537 > static_cast<unsigned long long>(this->size_ - start)))
538 gold_fatal(_("%s: attempt to map %lld bytes at offset %lld exceeds "
539 "size of file; the file may be corrupt"),
540 this->filename().c_str(),
541 static_cast<long long>(size),
542 static_cast<long long>(start));
544 unsigned int byteshift;
549 unsigned int target_size = (!parameters->target_valid()
551 : parameters->target().get_size());
552 byteshift = offset & ((target_size / 8) - 1);
554 // Set BYTESHIFT to the number of dummy bytes which must be
555 // inserted before the data in order for this data to be
558 byteshift = (target_size / 8) - byteshift;
561 // If --map-whole-files is set, make sure we have a
562 // whole file view. Options may not yet be ready, e.g.,
563 // when reading a version script. We then default to
564 // --no-map-whole-files.
565 if (this->whole_file_view_ == NULL
566 && parameters->options_valid()
567 && parameters->options().map_whole_files())
568 this->whole_file_view_ = this->make_view(0, this->size_, 0, cache);
570 // Try to find a View with the required BYTESHIFT.
571 File_read::View* vshifted;
572 File_read::View* v = this->find_view(offset + start, size,
573 aligned ? byteshift : -1U,
582 // If VSHIFTED is not NULL, then it has the data we need, but with
583 // the wrong byteshift.
587 gold_assert(aligned);
589 unsigned char* pbytes;
590 pbytes = static_cast<unsigned char*>(malloc(v->size() + byteshift));
593 memset(pbytes, 0, byteshift);
594 memcpy(pbytes + byteshift, v->data() + v->byteshift(), v->size());
596 File_read::View* shifted_view =
597 new File_read::View(v->start(), v->size(), pbytes, byteshift,
598 cache, View::DATA_ALLOCATED_ARRAY);
600 this->add_view(shifted_view);
604 // Make a new view. If we don't need an aligned view, use a
605 // byteshift of 0, so that we can use mmap.
606 return this->make_view(offset + start, size,
607 aligned ? byteshift : 0,
611 // Get a view into the file.
614 File_read::get_view(off_t offset, off_t start, section_size_type size,
615 bool aligned, bool cache)
617 File_read::View* pv = this->find_or_make_view(offset, start, size,
619 return pv->data() + (offset + start - pv->start() + pv->byteshift());
623 File_read::get_lasting_view(off_t offset, off_t start, section_size_type size,
624 bool aligned, bool cache)
626 File_read::View* pv = this->find_or_make_view(offset, start, size,
629 return new File_view(*this, pv,
631 + (offset + start - pv->start() + pv->byteshift())));
634 // Use readv to read COUNT entries from RM starting at START. BASE
635 // must be added to all file offsets in RM.
638 File_read::do_readv(off_t base, const Read_multiple& rm, size_t start,
641 unsigned char discard[File_read::page_size];
642 iovec iov[File_read::max_readv_entries * 2];
643 size_t iov_index = 0;
645 off_t first_offset = rm[start].file_offset;
646 off_t last_offset = first_offset;
648 for (size_t i = 0; i < count; ++i)
650 const Read_multiple_entry& i_entry(rm[start + i]);
652 if (i_entry.file_offset > last_offset)
654 size_t skip = i_entry.file_offset - last_offset;
655 gold_assert(skip <= sizeof discard);
657 iov[iov_index].iov_base = discard;
658 iov[iov_index].iov_len = skip;
664 iov[iov_index].iov_base = i_entry.buffer;
665 iov[iov_index].iov_len = i_entry.size;
668 want += i_entry.size;
670 last_offset = i_entry.file_offset + i_entry.size;
673 this->reopen_descriptor();
675 gold_assert(iov_index < sizeof iov / sizeof iov[0]);
677 if (::lseek(this->descriptor_, base + first_offset, SEEK_SET) < 0)
678 gold_fatal(_("%s: lseek failed: %s"),
679 this->filename().c_str(), strerror(errno));
681 ssize_t got = ::readv(this->descriptor_, iov, iov_index);
684 gold_fatal(_("%s: readv failed: %s"),
685 this->filename().c_str(), strerror(errno));
687 gold_fatal(_("%s: file too short: read only %zd of %zd bytes at %lld"),
688 this->filename().c_str(),
689 got, want, static_cast<long long>(base + first_offset));
694 #if !defined(HAVE_READV)
695 #define GOLD_IOV_MAX 1
696 #elif defined(IOV_MAX)
697 #define GOLD_IOV_MAX IOV_MAX
699 #define GOLD_IOV_MAX (File_read::max_readv_entries * 2)
702 // Read several pieces of data from the file.
705 File_read::read_multiple(off_t base, const Read_multiple& rm)
707 static size_t iov_max = GOLD_IOV_MAX;
708 size_t count = rm.size();
712 // Find up to MAX_READV_ENTRIES consecutive entries which are
713 // less than one page apart.
714 const Read_multiple_entry& i_entry(rm[i]);
715 off_t i_off = i_entry.file_offset;
716 off_t end_off = i_off + i_entry.size;
718 for (j = i + 1; j < count; ++j)
720 if (j - i >= File_read::max_readv_entries || j - i >= iov_max / 2)
722 const Read_multiple_entry& j_entry(rm[j]);
723 off_t j_off = j_entry.file_offset;
724 gold_assert(j_off >= end_off);
725 off_t j_end_off = j_off + j_entry.size;
726 if (j_end_off - end_off >= File_read::page_size)
732 this->read(base + i_off, i_entry.size, i_entry.buffer);
735 File_read::View* view = this->find_view(base + i_off,
739 this->do_readv(base, rm, i, j - i);
742 const unsigned char* v = (view->data()
743 + (base + i_off - view->start()
744 + view->byteshift()));
745 for (size_t k = i; k < j; ++k)
747 const Read_multiple_entry& k_entry(rm[k]);
748 gold_assert((convert_to_section_size_type(k_entry.file_offset
751 <= convert_to_section_size_type(end_off
753 memcpy(k_entry.buffer,
754 v + (k_entry.file_offset - i_off),
764 // Mark all views as no longer cached.
767 File_read::clear_view_cache_marks()
769 // Just ignore this if there are multiple objects associated with
770 // the file. Otherwise we will wind up uncaching and freeing some
771 // views for other objects.
772 if (this->object_count_ > 1)
775 for (Views::iterator p = this->views_.begin();
776 p != this->views_.end();
778 p->second->clear_cache();
779 for (Saved_views::iterator p = this->saved_views_.begin();
780 p != this->saved_views_.end();
785 // Remove all the file views. For a file which has multiple
786 // associated objects (i.e., an archive), we keep accessed views
787 // around until next time, in the hopes that they will be useful for
791 File_read::clear_views(Clear_views_mode mode)
793 bool keep_files_mapped = (parameters->options_valid()
794 && parameters->options().keep_files_mapped());
795 Views::iterator p = this->views_.begin();
796 while (p != this->views_.end())
799 if (p->second->is_locked() || p->second->is_permanent_view())
800 should_delete = false;
801 else if (mode == CLEAR_VIEWS_ALL)
802 should_delete = true;
803 else if ((p->second->should_cache()
804 || p->second == this->whole_file_view_)
805 && keep_files_mapped)
806 should_delete = false;
807 else if (this->object_count_ > 1
808 && p->second->accessed()
809 && mode != CLEAR_VIEWS_ARCHIVE)
810 should_delete = false;
812 should_delete = true;
816 if (p->second == this->whole_file_view_)
817 this->whole_file_view_ = NULL;
820 // map::erase invalidates only the iterator to the deleted
822 Views::iterator pe = p;
824 this->views_.erase(pe);
828 p->second->clear_accessed();
833 Saved_views::iterator q = this->saved_views_.begin();
834 while (q != this->saved_views_.end())
836 if (!(*q)->is_locked())
839 q = this->saved_views_.erase(q);
843 gold_assert(mode != CLEAR_VIEWS_ALL);
849 // Print statistical information to stderr. This is used for --stats.
852 File_read::print_stats()
854 fprintf(stderr, _("%s: total bytes mapped for read: %llu\n"),
855 program_name, File_read::total_mapped_bytes);
856 fprintf(stderr, _("%s: maximum bytes mapped for read at one time: %llu\n"),
857 program_name, File_read::maximum_mapped_bytes);
862 File_view::~File_view()
864 gold_assert(this->file_.is_locked());
865 this->view_->unlock();
870 // Create a file given just the filename.
872 Input_file::Input_file(const char* name)
873 : found_name_(), file_(), is_in_sysroot_(false), format_(FORMAT_NONE)
875 this->input_argument_ =
876 new Input_file_argument(name, Input_file_argument::INPUT_FILE_TYPE_FILE,
877 "", false, Position_dependent_options());
880 // Create a file for testing.
882 Input_file::Input_file(const Task* task, const char* name,
883 const unsigned char* contents, off_t size)
886 this->input_argument_ =
887 new Input_file_argument(name, Input_file_argument::INPUT_FILE_TYPE_FILE,
888 "", false, Position_dependent_options());
889 bool ok = this->file_.open(task, name, contents, size);
893 // Return the position dependent options in force for this file.
895 const Position_dependent_options&
896 Input_file::options() const
898 return this->input_argument_->options();
901 // Return the name given by the user. For -lc this will return "c".
904 Input_file::name() const
906 return this->input_argument_->name();
909 // Return whether this file is in a system directory.
912 Input_file::is_in_system_directory() const
914 if (this->is_in_sysroot())
916 return parameters->options().is_in_system_directory(this->filename());
919 // Return whether we are only reading symbols.
922 Input_file::just_symbols() const
924 return this->input_argument_->just_symbols();
927 // Return whether this is a file that we will search for in the list
931 Input_file::will_search_for() const
933 return (!IS_ABSOLUTE_PATH(this->input_argument_->name())
934 && (this->input_argument_->is_lib()
935 || this->input_argument_->is_searched_file()
936 || this->input_argument_->extra_search_path() != NULL));
939 // Return the file last modification time. Calls gold_fatal if the stat
940 // system call failed.
943 File_read::get_mtime()
945 struct stat file_stat;
946 this->reopen_descriptor();
948 if (fstat(this->descriptor_, &file_stat) < 0)
949 gold_fatal(_("%s: stat failed: %s"), this->name_.c_str(),
951 #ifdef HAVE_STAT_ST_MTIM
952 return Timespec(file_stat.st_mtim.tv_sec, file_stat.st_mtim.tv_nsec);
954 return Timespec(file_stat.st_mtime, 0);
958 // Try to find a file in the extra search dirs. Returns true on success.
961 Input_file::try_extra_search_path(int* pindex,
962 const Input_file_argument* input_argument,
963 std::string filename, std::string* found_name,
966 if (input_argument->extra_search_path() == NULL)
969 std::string name = input_argument->extra_search_path();
970 if (!IS_DIR_SEPARATOR(name[name.length() - 1]))
974 struct stat dummy_stat;
975 if (*pindex > 0 || ::stat(name.c_str(), &dummy_stat) < 0)
978 *found_name = filename;
983 // Find the actual file.
984 // If the filename is not absolute, we assume it is in the current
985 // directory *except* when:
986 // A) input_argument_->is_lib() is true;
987 // B) input_argument_->is_searched_file() is true; or
988 // C) input_argument_->extra_search_path() is not empty.
989 // In each, we look in extra_search_path + library_path to find
990 // the file location, rather than the current directory.
993 Input_file::find_file(const Dirsearch& dirpath, int* pindex,
994 const Input_file_argument* input_argument,
996 std::string* found_name, std::string* namep)
1000 // Case 1: name is an absolute file, just try to open it
1001 // Case 2: name is relative but is_lib is false, is_searched_file is false,
1002 // and extra_search_path is empty
1003 if (IS_ABSOLUTE_PATH(input_argument->name())
1004 || (!input_argument->is_lib()
1005 && !input_argument->is_searched_file()
1006 && input_argument->extra_search_path() == NULL))
1008 name = input_argument->name();
1013 // Case 3: is_lib is true or is_searched_file is true
1014 else if (input_argument->is_lib()
1015 || input_argument->is_searched_file())
1017 std::vector<std::string> names;
1019 if (input_argument->is_lib())
1021 std::string prefix = "lib";
1022 prefix += input_argument->name();
1023 if (parameters->options().is_static()
1024 || !input_argument->options().Bdynamic())
1025 names.push_back(prefix + ".a");
1028 names.push_back(prefix + ".so");
1029 names.push_back(prefix + ".a");
1033 names.push_back(input_argument->name());
1035 for (std::vector<std::string>::const_iterator n = names.begin();
1038 if (Input_file::try_extra_search_path(pindex, input_argument, *n,
1042 // It is not in the extra_search_path.
1043 name = dirpath.find(names, is_in_sysroot, pindex, found_name);
1046 gold_error(_("cannot find %s%s"),
1047 input_argument->is_lib() ? "-l" : "",
1048 input_argument->name());
1054 // Case 4: extra_search_path is not empty
1057 gold_assert(input_argument->extra_search_path() != NULL);
1059 if (try_extra_search_path(pindex, input_argument, input_argument->name(),
1063 // extra_search_path failed, so check the normal search-path.
1064 int index = *pindex;
1067 name = dirpath.find(std::vector<std::string>(1, input_argument->name()),
1068 is_in_sysroot, &index, found_name);
1071 gold_error(_("cannot find %s"),
1072 input_argument->name());
1076 *pindex = index + 1;
1084 Input_file::open(const Dirsearch& dirpath, const Task* task, int* pindex)
1087 if (!Input_file::find_file(dirpath, pindex, this->input_argument_,
1088 &this->is_in_sysroot_, &this->found_name_, &name))
1091 // Now that we've figured out where the file lives, try to open it.
1093 General_options::Object_format format =
1094 this->input_argument_->options().format_enum();
1096 if (format == General_options::OBJECT_FORMAT_ELF)
1098 ok = this->file_.open(task, name);
1099 this->format_ = FORMAT_ELF;
1103 gold_assert(format == General_options::OBJECT_FORMAT_BINARY);
1104 ok = this->open_binary(task, name);
1105 this->format_ = FORMAT_BINARY;
1110 gold_error(_("cannot open %s: %s"),
1111 name.c_str(), strerror(errno));
1112 this->format_ = FORMAT_NONE;
1119 // Open a file for --format binary.
1122 Input_file::open_binary(const Task* task, const std::string& name)
1124 // In order to open a binary file, we need machine code, size, and
1125 // endianness. We may not have a valid target at this point, in
1126 // which case we use the default target.
1127 parameters_force_valid_target();
1128 const Target& target(parameters->target());
1130 Binary_to_elf binary_to_elf(target.machine_code(),
1132 target.is_big_endian(),
1134 if (!binary_to_elf.convert(task))
1136 return this->file_.open(task, name, binary_to_elf.converted_data_leak(),
1137 binary_to_elf.converted_size());
1140 } // End namespace gold.