1 // archive.cc -- archive support for gold
3 // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
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.
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.
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.
29 #include "libiberty.h"
30 #include "filenames.h"
46 // The header of an entry in the archive. This is all readable text,
47 // padded with spaces where necesary. If the contents of an archive
48 // are all text file, the entire archive is readable.
50 struct Archive::Archive_header
54 // The file modification time.
56 // The user's UID in decimal.
58 // The user's GID in decimal.
60 // The file mode in octal.
62 // The file size in decimal.
64 // The final magic code.
68 // Class Archive static variables.
69 unsigned int Archive::total_archives
;
70 unsigned int Archive::total_members
;
71 unsigned int Archive::total_members_loaded
;
75 const char Archive::armag
[sarmag
] =
77 '!', '<', 'a', 'r', 'c', 'h', '>', '\n'
80 const char Archive::armagt
[sarmag
] =
82 '!', '<', 't', 'h', 'i', 'n', '>', '\n'
85 const char Archive::arfmag
[2] = { '`', '\n' };
87 Archive::Archive(const std::string
& name
, Input_file
* input_file
,
88 bool is_thin_archive
, Dirsearch
* dirpath
, Task
* task
)
89 : name_(name
), input_file_(input_file
), armap_(), armap_names_(),
90 extended_names_(), armap_checked_(), seen_offsets_(), members_(),
91 is_thin_archive_(is_thin_archive
), included_member_(false),
92 nested_archives_(), dirpath_(dirpath
), task_(task
), num_members_(0)
95 parameters
->options().check_excluded_libs(input_file
->found_name());
98 // Set up the archive: read the symbol map and the extended name
104 // We need to ignore empty archives.
105 if (this->input_file_
->file().filesize() == sarmag
)
108 // The first member of the archive should be the symbol table.
109 std::string armap_name
;
110 section_size_type armap_size
=
111 convert_to_section_size_type(this->read_header(sarmag
, false,
114 if (armap_name
.empty())
116 this->read_armap(sarmag
+ sizeof(Archive_header
), armap_size
);
117 off
= sarmag
+ sizeof(Archive_header
) + armap_size
;
119 else if (!this->input_file_
->options().whole_archive())
120 gold_error(_("%s: no archive symbol table (run ranlib)"),
121 this->name().c_str());
123 // See if there is an extended name table. We cache these views
124 // because it is likely that we will want to read the following
125 // header in the add_symbols routine.
129 section_size_type extended_size
=
130 convert_to_section_size_type(this->read_header(off
, true, &xname
, NULL
));
133 const unsigned char* p
= this->get_view(off
+ sizeof(Archive_header
),
134 extended_size
, false, true);
135 const char* px
= reinterpret_cast<const char*>(p
);
136 this->extended_names_
.assign(px
, extended_size
);
138 bool preread_syms
= (parameters
->options().threads()
139 && parameters
->options().preread_archive_symbols());
140 #ifndef ENABLE_THREADS
141 preread_syms
= false;
143 if (parameters
->options().has_plugins())
144 preread_syms
= false;
147 this->read_all_symbols();
150 // Unlock any nested archives.
153 Archive::unlock_nested_archives()
155 for (Nested_archive_table::iterator p
= this->nested_archives_
.begin();
156 p
!= this->nested_archives_
.end();
159 p
->second
->unlock(this->task_
);
163 // Read the archive symbol map.
166 Archive::read_armap(off_t start
, section_size_type size
)
168 // To count the total number of archive members, we'll just count
169 // the number of times the file offset changes. Since most archives
170 // group the symbols in the armap by object, this ought to give us
171 // an accurate count.
172 off_t last_seen_offset
= -1;
174 // Read in the entire armap.
175 const unsigned char* p
= this->get_view(start
, size
, true, false);
177 // Numbers in the armap are always big-endian.
178 const elfcpp::Elf_Word
* pword
= reinterpret_cast<const elfcpp::Elf_Word
*>(p
);
179 unsigned int nsyms
= elfcpp::Swap
<32, true>::readval(pword
);
182 // Note that the addition is in units of sizeof(elfcpp::Elf_Word).
183 const char* pnames
= reinterpret_cast<const char*>(pword
+ nsyms
);
184 section_size_type names_size
=
185 reinterpret_cast<const char*>(p
) + size
- pnames
;
186 this->armap_names_
.assign(pnames
, names_size
);
188 this->armap_
.resize(nsyms
);
190 section_offset_type name_offset
= 0;
191 for (unsigned int i
= 0; i
< nsyms
; ++i
)
193 this->armap_
[i
].name_offset
= name_offset
;
194 this->armap_
[i
].file_offset
= elfcpp::Swap
<32, true>::readval(pword
);
195 name_offset
+= strlen(pnames
+ name_offset
) + 1;
197 if (this->armap_
[i
].file_offset
!= last_seen_offset
)
199 last_seen_offset
= this->armap_
[i
].file_offset
;
200 ++this->num_members_
;
204 if (static_cast<section_size_type
>(name_offset
) > names_size
)
205 gold_error(_("%s: bad archive symbol table names"),
206 this->name().c_str());
208 // This array keeps track of which symbols are for archive elements
209 // which we have already included in the link.
210 this->armap_checked_
.resize(nsyms
);
213 // Read the header of an archive member at OFF. Fail if something
214 // goes wrong. Return the size of the member. Set *PNAME to the name
218 Archive::read_header(off_t off
, bool cache
, std::string
* pname
,
221 const unsigned char* p
= this->get_view(off
, sizeof(Archive_header
), true,
223 const Archive_header
* hdr
= reinterpret_cast<const Archive_header
*>(p
);
224 return this->interpret_header(hdr
, off
, pname
, nested_off
);
227 // Interpret the header of HDR, the header of the archive member at
228 // file offset OFF. Fail if something goes wrong. Return the size of
229 // the member. Set *PNAME to the name of the member.
232 Archive::interpret_header(const Archive_header
* hdr
, off_t off
,
233 std::string
* pname
, off_t
* nested_off
) const
235 if (memcmp(hdr
->ar_fmag
, arfmag
, sizeof arfmag
) != 0)
237 gold_error(_("%s: malformed archive header at %zu"),
238 this->name().c_str(), static_cast<size_t>(off
));
239 return this->input_file_
->file().filesize() - off
;
242 const int size_string_size
= sizeof hdr
->ar_size
;
243 char size_string
[size_string_size
+ 1];
244 memcpy(size_string
, hdr
->ar_size
, size_string_size
);
245 char* ps
= size_string
+ size_string_size
;
246 while (ps
[-1] == ' ')
252 off_t member_size
= strtol(size_string
, &end
, 10);
255 || (member_size
== LONG_MAX
&& errno
== ERANGE
))
257 gold_error(_("%s: malformed archive header size at %zu"),
258 this->name().c_str(), static_cast<size_t>(off
));
259 return this->input_file_
->file().filesize() - off
;
262 if (hdr
->ar_name
[0] != '/')
264 const char* name_end
= strchr(hdr
->ar_name
, '/');
266 || name_end
- hdr
->ar_name
>= static_cast<int>(sizeof hdr
->ar_name
))
268 gold_error(_("%s: malformed archive header name at %zu"),
269 this->name().c_str(), static_cast<size_t>(off
));
270 return this->input_file_
->file().filesize() - off
;
272 pname
->assign(hdr
->ar_name
, name_end
- hdr
->ar_name
);
273 if (nested_off
!= NULL
)
276 else if (hdr
->ar_name
[1] == ' ')
278 // This is the symbol table.
282 else if (hdr
->ar_name
[1] == '/')
284 // This is the extended name table.
285 pname
->assign(1, '/');
290 long x
= strtol(hdr
->ar_name
+ 1, &end
, 10);
293 y
= strtol(end
+ 1, &end
, 10);
296 || (x
== LONG_MAX
&& errno
== ERANGE
)
297 || static_cast<size_t>(x
) >= this->extended_names_
.size())
299 gold_error(_("%s: bad extended name index at %zu"),
300 this->name().c_str(), static_cast<size_t>(off
));
301 return this->input_file_
->file().filesize() - off
;
304 const char* name
= this->extended_names_
.data() + x
;
305 const char* name_end
= strchr(name
, '\n');
306 if (static_cast<size_t>(name_end
- name
) > this->extended_names_
.size()
307 || name_end
[-1] != '/')
309 gold_error(_("%s: bad extended name entry at header %zu"),
310 this->name().c_str(), static_cast<size_t>(off
));
311 return this->input_file_
->file().filesize() - off
;
313 pname
->assign(name
, name_end
- 1 - name
);
314 if (nested_off
!= NULL
)
321 // An archive member iterator.
323 class Archive::const_iterator
326 // The header of an archive member. This is what this iterator
330 // The name of the member.
332 // The file offset of the member.
334 // The file offset of a nested archive member.
336 // The size of the member.
340 const_iterator(Archive
* archive
, off_t off
)
341 : archive_(archive
), off_(off
)
342 { this->read_next_header(); }
346 { return this->header_
; }
350 { return &this->header_
; }
355 if (this->off_
== this->archive_
->file().filesize())
357 this->off_
+= sizeof(Archive_header
);
358 if (!this->archive_
->is_thin_archive())
359 this->off_
+= this->header_
.size
;
360 if ((this->off_
& 1) != 0)
362 this->read_next_header();
369 const_iterator ret
= *this;
375 operator==(const const_iterator p
) const
376 { return this->off_
== p
->off
; }
379 operator!=(const const_iterator p
) const
380 { return this->off_
!= p
->off
; }
386 // The underlying archive.
388 // The current offset in the file.
390 // The current archive header.
394 // Read the next archive header.
397 Archive::const_iterator::read_next_header()
399 off_t filesize
= this->archive_
->file().filesize();
402 if (filesize
- this->off_
< static_cast<off_t
>(sizeof(Archive_header
)))
404 if (filesize
!= this->off_
)
406 gold_error(_("%s: short archive header at %zu"),
407 this->archive_
->filename().c_str(),
408 static_cast<size_t>(this->off_
));
409 this->off_
= filesize
;
411 this->header_
.off
= filesize
;
415 unsigned char buf
[sizeof(Archive_header
)];
416 this->archive_
->file().read(this->off_
, sizeof(Archive_header
), buf
);
418 const Archive_header
* hdr
= reinterpret_cast<const Archive_header
*>(buf
);
420 this->archive_
->interpret_header(hdr
, this->off_
, &this->header_
.name
,
421 &this->header_
.nested_off
);
422 this->header_
.off
= this->off_
;
424 // Skip special members.
425 if (!this->header_
.name
.empty() && this->header_
.name
!= "/")
428 this->off_
+= sizeof(Archive_header
) + this->header_
.size
;
429 if ((this->off_
& 1) != 0)
436 Archive::const_iterator
439 return Archive::const_iterator(this, sarmag
);
444 Archive::const_iterator
447 return Archive::const_iterator(this, this->input_file_
->file().filesize());
450 // Get the file and offset for an archive member, which may be an
451 // external member of a thin archive. Set *INPUT_FILE to the
452 // file containing the actual member, *MEMOFF to the offset
453 // within that file (0 if not a nested archive), and *MEMBER_NAME
454 // to the name of the archive member. Return TRUE on success.
457 Archive::get_file_and_offset(off_t off
, Input_file
** input_file
, off_t
* memoff
,
458 off_t
* memsize
, std::string
* member_name
)
462 *memsize
= this->read_header(off
, false, member_name
, &nested_off
);
464 *input_file
= this->input_file_
;
465 *memoff
= off
+ static_cast<off_t
>(sizeof(Archive_header
));
467 if (!this->is_thin_archive_
)
470 // Adjust a relative pathname so that it is relative
471 // to the directory containing the archive.
472 if (!IS_ABSOLUTE_PATH(member_name
->c_str()))
474 const char* arch_path
= this->filename().c_str();
475 const char* basename
= lbasename(arch_path
);
476 if (basename
> arch_path
)
477 member_name
->replace(0, 0,
478 this->filename().substr(0, basename
- arch_path
));
483 // This is a member of a nested archive. Open the containing
484 // archive if we don't already have it open, then do a recursive
485 // call to include the member from that archive.
487 Nested_archive_table::const_iterator p
=
488 this->nested_archives_
.find(*member_name
);
489 if (p
!= this->nested_archives_
.end())
493 Input_file_argument
* input_file_arg
=
494 new Input_file_argument(member_name
->c_str(),
495 Input_file_argument::INPUT_FILE_TYPE_FILE
,
496 "", false, parameters
->options());
497 *input_file
= new Input_file(input_file_arg
);
499 if (!(*input_file
)->open(*this->dirpath_
, this->task_
, &dummy
))
501 arch
= new Archive(*member_name
, *input_file
, false, this->dirpath_
,
504 std::pair
<Nested_archive_table::iterator
, bool> ins
=
505 this->nested_archives_
.insert(std::make_pair(*member_name
, arch
));
506 gold_assert(ins
.second
);
508 return arch
->get_file_and_offset(nested_off
, input_file
, memoff
,
509 memsize
, member_name
);
512 // This is an external member of a thin archive. Open the
513 // file as a regular relocatable object file.
514 Input_file_argument
* input_file_arg
=
515 new Input_file_argument(member_name
->c_str(),
516 Input_file_argument::INPUT_FILE_TYPE_FILE
,
517 "", false, this->input_file_
->options());
518 *input_file
= new Input_file(input_file_arg
);
520 if (!(*input_file
)->open(*this->dirpath_
, this->task_
, &dummy
))
524 *memsize
= (*input_file
)->file().filesize();
528 // Return an ELF object for the member at offset OFF. If the ELF
529 // object has an unsupported target type, set *PUNCONFIGURED to true
533 Archive::get_elf_object_for_member(off_t off
, bool* punconfigured
)
535 *punconfigured
= false;
537 Input_file
* input_file
;
540 std::string member_name
;
541 if (!this->get_file_and_offset(off
, &input_file
, &memoff
, &memsize
,
545 if (parameters
->options().has_plugins())
547 Object
* obj
= parameters
->options().plugins()->claim_file(input_file
,
552 // The input file was claimed by a plugin, and its symbols
553 // have been provided by the plugin.
558 const unsigned char* ehdr
;
560 if (!is_elf_object(input_file
, memoff
, &ehdr
, &read_size
))
562 gold_error(_("%s: member at %zu is not an ELF object"),
563 this->name().c_str(), static_cast<size_t>(off
));
567 Object
*obj
= make_elf_object((std::string(this->input_file_
->filename())
568 + "(" + member_name
+ ")"),
569 input_file
, memoff
, ehdr
, read_size
,
573 obj
->set_no_export(this->no_export());
577 // Read the symbols from all the archive members in the link.
580 Archive::read_all_symbols()
582 for (Archive::const_iterator p
= this->begin();
585 this->read_symbols(p
->off
);
588 // Read the symbols from an archive member in the link. OFF is the file
589 // offset of the member header.
592 Archive::read_symbols(off_t off
)
595 Object
* obj
= this->get_elf_object_for_member(off
, &dummy
);
600 Read_symbols_data
* sd
= new Read_symbols_data
;
601 obj
->read_symbols(sd
);
602 Archive_member
member(obj
, sd
);
603 this->members_
[off
] = member
;
606 Archive::Should_include
607 Archive::should_include_member(Symbol_table
* symtab
, Layout
* layout
,
608 const char* sym_name
, Symbol
** symp
,
609 std::string
* why
, char** tmpbufp
,
612 // In an object file, and therefore in an archive map, an
613 // '@' in the name separates the symbol name from the
614 // version name. If there are two '@' characters, this is
615 // the default version.
616 char* tmpbuf
= *tmpbufp
;
617 const char* ver
= strchr(sym_name
, '@');
621 size_t symlen
= ver
- sym_name
;
622 if (symlen
+ 1 > *tmpbuflen
)
624 tmpbuf
= static_cast<char*>(xrealloc(tmpbuf
, symlen
+ 1));
626 *tmpbuflen
= symlen
+ 1;
628 memcpy(tmpbuf
, sym_name
, symlen
);
629 tmpbuf
[symlen
] = '\0';
640 Symbol
* sym
= symtab
->lookup(sym_name
, ver
);
644 || !sym
->is_undefined()
645 || sym
->binding() == elfcpp::STB_WEAK
))
646 sym
= symtab
->lookup(sym_name
, NULL
);
652 // Check whether the symbol was named in a -u option.
653 if (parameters
->options().is_undefined(sym_name
))
658 else if (layout
->script_options()->is_referenced(sym_name
))
660 size_t alc
= 100 + strlen(sym_name
);
661 char* buf
= new char[alc
];
662 snprintf(buf
, alc
, _("script or expression reference to %s"),
668 return Archive::SHOULD_INCLUDE_UNKNOWN
;
670 else if (!sym
->is_undefined())
671 return Archive::SHOULD_INCLUDE_NO
;
672 else if (sym
->binding() == elfcpp::STB_WEAK
)
673 return Archive::SHOULD_INCLUDE_UNKNOWN
;
675 return Archive::SHOULD_INCLUDE_YES
;
678 // Select members from the archive and add them to the link. We walk
679 // through the elements in the archive map, and look each one up in
680 // the symbol table. If it exists as a strong undefined symbol, we
681 // pull in the corresponding element. We have to do this in a loop,
682 // since pulling in one element may create new undefined symbols which
683 // may be satisfied by other objects in the archive. Return true in
684 // the normal case, false if the first member we tried to add from
685 // this archive had an incompatible target.
688 Archive::add_symbols(Symbol_table
* symtab
, Layout
* layout
,
689 Input_objects
* input_objects
, Mapfile
* mapfile
)
691 ++Archive::total_archives
;
693 if (this->input_file_
->options().whole_archive())
694 return this->include_all_members(symtab
, layout
, input_objects
,
697 Archive::total_members
+= this->num_members_
;
699 input_objects
->archive_start(this);
701 const size_t armap_size
= this->armap_
.size();
703 // This is a quick optimization, since we usually see many symbols
704 // in a row with the same offset. last_seen_offset holds the last
705 // offset we saw that was present in the seen_offsets_ set.
706 off_t last_seen_offset
= -1;
708 // Track which symbols in the symbol table we've already found to be
712 size_t tmpbuflen
= 0;
713 bool added_new_object
;
716 added_new_object
= false;
717 for (size_t i
= 0; i
< armap_size
; ++i
)
719 if (this->armap_checked_
[i
])
721 if (this->armap_
[i
].file_offset
== last_seen_offset
)
723 this->armap_checked_
[i
] = true;
726 if (this->seen_offsets_
.find(this->armap_
[i
].file_offset
)
727 != this->seen_offsets_
.end())
729 this->armap_checked_
[i
] = true;
730 last_seen_offset
= this->armap_
[i
].file_offset
;
734 const char* sym_name
= (this->armap_names_
.data()
735 + this->armap_
[i
].name_offset
);
739 Archive::Should_include t
=
740 Archive::should_include_member(symtab
, layout
, sym_name
, &sym
,
741 &why
, &tmpbuf
, &tmpbuflen
);
743 if (t
== Archive::SHOULD_INCLUDE_NO
744 || t
== Archive::SHOULD_INCLUDE_YES
)
745 this->armap_checked_
[i
] = true;
747 if (t
!= Archive::SHOULD_INCLUDE_YES
)
750 // We want to include this object in the link.
751 last_seen_offset
= this->armap_
[i
].file_offset
;
752 this->seen_offsets_
.insert(last_seen_offset
);
754 if (!this->include_member(symtab
, layout
, input_objects
,
755 last_seen_offset
, mapfile
, sym
,
763 added_new_object
= true;
766 while (added_new_object
);
771 input_objects
->archive_stop(this);
776 // Include all the archive members in the link. This is for --whole-archive.
779 Archive::include_all_members(Symbol_table
* symtab
, Layout
* layout
,
780 Input_objects
* input_objects
, Mapfile
* mapfile
)
782 input_objects
->archive_start(this);
784 if (this->members_
.size() > 0)
786 std::map
<off_t
, Archive_member
>::const_iterator p
;
787 for (p
= this->members_
.begin();
788 p
!= this->members_
.end();
791 if (!this->include_member(symtab
, layout
, input_objects
, p
->first
,
792 mapfile
, NULL
, "--whole-archive"))
794 ++Archive::total_members
;
799 for (Archive::const_iterator p
= this->begin();
803 if (!this->include_member(symtab
, layout
, input_objects
, p
->off
,
804 mapfile
, NULL
, "--whole-archive"))
806 ++Archive::total_members
;
810 input_objects
->archive_stop(this);
815 // Return the number of members in the archive. This is only used for
819 Archive::count_members()
822 for (Archive::const_iterator p
= this->begin();
829 // Include an archive member in the link. OFF is the file offset of
830 // the member header. WHY is the reason we are including this member.
831 // Return true if we added the member or if we had an error, return
832 // false if this was the first member we tried to add from this
833 // archive and it had an incompatible format.
836 Archive::include_member(Symbol_table
* symtab
, Layout
* layout
,
837 Input_objects
* input_objects
, off_t off
,
838 Mapfile
* mapfile
, Symbol
* sym
, const char* why
)
840 ++Archive::total_members_loaded
;
842 std::map
<off_t
, Archive_member
>::const_iterator p
= this->members_
.find(off
);
843 if (p
!= this->members_
.end())
845 Object
*obj
= p
->second
.obj_
;
847 Read_symbols_data
*sd
= p
->second
.sd_
;
849 mapfile
->report_include_archive_member(obj
->name(), sym
, why
);
850 if (input_objects
->add_object(obj
))
852 obj
->layout(symtab
, layout
, sd
);
853 obj
->add_symbols(symtab
, sd
, layout
);
854 this->included_member_
= true;
861 Object
* obj
= this->get_elf_object_for_member(off
, &unconfigured
);
863 if (!this->included_member_
864 && this->searched_for()
873 mapfile
->report_include_archive_member(obj
->name(), sym
, why
);
875 Pluginobj
* pluginobj
= obj
->pluginobj();
876 if (pluginobj
!= NULL
)
878 pluginobj
->add_symbols(symtab
, NULL
, layout
);
879 this->included_member_
= true;
883 if (!input_objects
->add_object(obj
))
885 // If this is an external member of a thin archive, unlock the
887 if (obj
->offset() == 0)
888 obj
->unlock(this->task_
);
894 Read_symbols_data sd
;
895 obj
->read_symbols(&sd
);
896 obj
->layout(symtab
, layout
, &sd
);
897 obj
->add_symbols(symtab
, &sd
, layout
);
900 // If this is an external member of a thin archive, unlock the file
901 // for the next task.
902 if (obj
->offset() == 0)
903 obj
->unlock(this->task_
);
905 this->included_member_
= true;
911 // Print statistical information to stderr. This is used for --stats.
914 Archive::print_stats()
916 fprintf(stderr
, _("%s: archive libraries: %u\n"),
917 program_name
, Archive::total_archives
);
918 fprintf(stderr
, _("%s: total archive members: %u\n"),
919 program_name
, Archive::total_members
);
920 fprintf(stderr
, _("%s: loaded archive members: %u\n"),
921 program_name
, Archive::total_members_loaded
);
924 // Add_archive_symbols methods.
926 Add_archive_symbols::~Add_archive_symbols()
928 if (this->this_blocker_
!= NULL
)
929 delete this->this_blocker_
;
930 // next_blocker_ is deleted by the task associated with the next
934 // Return whether we can add the archive symbols. We are blocked by
935 // this_blocker_. We block next_blocker_. We also lock the file.
938 Add_archive_symbols::is_runnable()
940 if (this->this_blocker_
!= NULL
&& this->this_blocker_
->is_blocked())
941 return this->this_blocker_
;
946 Add_archive_symbols::locks(Task_locker
* tl
)
948 tl
->add(this, this->next_blocker_
);
949 tl
->add(this, this->archive_
->token());
953 Add_archive_symbols::run(Workqueue
* workqueue
)
955 bool added
= this->archive_
->add_symbols(this->symtab_
, this->layout_
,
956 this->input_objects_
,
958 this->archive_
->unlock_nested_archives();
960 this->archive_
->release();
961 this->archive_
->clear_uncached_views();
965 // This archive holds object files which are incompatible with
967 Read_symbols::incompatible_warning(this->input_argument_
,
968 this->archive_
->input_file());
969 Read_symbols::requeue(workqueue
, this->input_objects_
, this->symtab_
,
970 this->layout_
, this->dirpath_
, this->dirindex_
,
971 this->mapfile_
, this->input_argument_
,
972 this->input_group_
, this->next_blocker_
);
973 delete this->archive_
;
977 if (this->input_group_
!= NULL
)
978 this->input_group_
->add_archive(this->archive_
);
981 // We no longer need to know about this archive.
982 delete this->archive_
;
983 this->archive_
= NULL
;
987 // Class Lib_group static variables.
988 unsigned int Lib_group::total_lib_groups
;
989 unsigned int Lib_group::total_members
;
990 unsigned int Lib_group::total_members_loaded
;
992 Lib_group::Lib_group(const Input_file_lib
* lib
, Task
* task
)
993 : lib_(lib
), task_(task
), members_()
995 this->members_
.resize(lib
->size());
998 // Select members from the lib group and add them to the link. We walk
999 // through the the members, and check if each one up should be included.
1000 // If the object says it should be included, we do so. We have to do
1001 // this in a loop, since including one member may create new undefined
1002 // symbols which may be satisfied by other members.
1005 Lib_group::add_symbols(Symbol_table
* symtab
, Layout
* layout
,
1006 Input_objects
* input_objects
)
1008 ++Lib_group::total_lib_groups
;
1010 Lib_group::total_members
+= this->members_
.size();
1012 bool added_new_object
;
1015 added_new_object
= false;
1017 while (i
< this->members_
.size())
1019 const Archive_member
& member
= this->members_
[i
];
1020 Object
*obj
= member
.obj_
;
1023 // Skip files with no symbols. Plugin objects have
1024 // member.sd_ == NULL.
1026 && (member
.sd_
== NULL
|| member
.sd_
->symbol_names
!= NULL
))
1028 Archive::Should_include t
= obj
->should_include_member(symtab
,
1033 if (t
!= Archive::SHOULD_INCLUDE_YES
)
1039 this->include_member(symtab
, layout
, input_objects
, member
);
1041 added_new_object
= true;
1045 if (member
.sd_
!= NULL
)
1049 this->members_
[i
] = this->members_
.back();
1050 this->members_
.pop_back();
1053 while (added_new_object
);
1056 // Include a lib group member in the link.
1059 Lib_group::include_member(Symbol_table
* symtab
, Layout
* layout
,
1060 Input_objects
* input_objects
,
1061 const Archive_member
& member
)
1063 ++Lib_group::total_members_loaded
;
1065 Object
* obj
= member
.obj_
;
1066 gold_assert(obj
!= NULL
);
1068 Pluginobj
* pluginobj
= obj
->pluginobj();
1069 if (pluginobj
!= NULL
)
1071 pluginobj
->add_symbols(symtab
, NULL
, layout
);
1075 Read_symbols_data
* sd
= member
.sd_
;
1076 gold_assert(sd
!= NULL
);
1077 obj
->lock(this->task_
);
1078 if (input_objects
->add_object(obj
))
1080 obj
->layout(symtab
, layout
, sd
);
1081 obj
->add_symbols(symtab
, sd
, layout
);
1082 // Unlock the file for the next task.
1083 obj
->unlock(this->task_
);
1088 // Print statistical information to stderr. This is used for --stats.
1091 Lib_group::print_stats()
1093 fprintf(stderr
, _("%s: lib groups: %u\n"),
1094 program_name
, Lib_group::total_lib_groups
);
1095 fprintf(stderr
, _("%s: total lib groups members: %u\n"),
1096 program_name
, Lib_group::total_members
);
1097 fprintf(stderr
, _("%s: loaded lib groups members: %u\n"),
1098 program_name
, Lib_group::total_members_loaded
);
1102 Add_lib_group_symbols::is_runnable()
1104 if (this->this_blocker_
!= NULL
&& this->this_blocker_
->is_blocked())
1105 return this->this_blocker_
;
1110 Add_lib_group_symbols::locks(Task_locker
* tl
)
1112 tl
->add(this, this->next_blocker_
);
1116 Add_lib_group_symbols::run(Workqueue
*)
1118 this->lib_
->add_symbols(this->symtab_
, this->layout_
, this->input_objects_
);
1121 Add_lib_group_symbols::~Add_lib_group_symbols()
1123 if (this->this_blocker_
!= NULL
)
1124 delete this->this_blocker_
;
1125 // next_blocker_ is deleted by the task associated with the next
1129 } // End namespace gold.