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61ba1cf9 ILT |
1 | // archive.cc -- archive support for gold |
2 | ||
0f3b89d8 | 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 | ||
61ba1cf9 ILT |
23 | #include "gold.h" |
24 | ||
25 | #include <cerrno> | |
26 | #include <cstring> | |
27 | #include <climits> | |
28 | #include <vector> | |
a1207466 CC |
29 | #include "libiberty.h" |
30 | #include "filenames.h" | |
61ba1cf9 ILT |
31 | |
32 | #include "elfcpp.h" | |
7e1edb90 | 33 | #include "options.h" |
7d9e3d98 | 34 | #include "mapfile.h" |
61ba1cf9 | 35 | #include "fileread.h" |
ead1e424 | 36 | #include "readsyms.h" |
61ba1cf9 ILT |
37 | #include "symtab.h" |
38 | #include "object.h" | |
88a4108b | 39 | #include "layout.h" |
61ba1cf9 | 40 | #include "archive.h" |
89fc3421 | 41 | #include "plugin.h" |
09ec0418 | 42 | #include "incremental.h" |
61ba1cf9 ILT |
43 | |
44 | namespace gold | |
45 | { | |
46 | ||
47 | // The header of an entry in the archive. This is all readable text, | |
9b547ce6 | 48 | // padded with spaces where necessary. If the contents of an archive |
61ba1cf9 ILT |
49 | // are all text file, the entire archive is readable. |
50 | ||
51 | struct Archive::Archive_header | |
52 | { | |
53 | // The entry name. | |
54 | char ar_name[16]; | |
55 | // The file modification time. | |
56 | char ar_date[12]; | |
57 | // The user's UID in decimal. | |
58 | char ar_uid[6]; | |
59 | // The user's GID in decimal. | |
60 | char ar_gid[6]; | |
61 | // The file mode in octal. | |
62 | char ar_mode[8]; | |
63 | // The file size in decimal. | |
64 | char ar_size[10]; | |
65 | // The final magic code. | |
66 | char ar_fmag[2]; | |
67 | }; | |
68 | ||
ac45a351 CC |
69 | // Class Archive static variables. |
70 | unsigned int Archive::total_archives; | |
71 | unsigned int Archive::total_members; | |
72 | unsigned int Archive::total_members_loaded; | |
73 | ||
61ba1cf9 ILT |
74 | // Archive methods. |
75 | ||
76 | const char Archive::armag[sarmag] = | |
77 | { | |
78 | '!', '<', 'a', 'r', 'c', 'h', '>', '\n' | |
79 | }; | |
80 | ||
a1207466 CC |
81 | const char Archive::armagt[sarmag] = |
82 | { | |
83 | '!', '<', 't', 'h', 'i', 'n', '>', '\n' | |
84 | }; | |
85 | ||
61ba1cf9 ILT |
86 | const char Archive::arfmag[2] = { '`', '\n' }; |
87 | ||
2ea97941 ILT |
88 | Archive::Archive(const std::string& name, Input_file* input_file, |
89 | bool is_thin_archive, Dirsearch* dirpath, Task* task) | |
90 | : name_(name), input_file_(input_file), armap_(), armap_names_(), | |
65514900 | 91 | extended_names_(), armap_checked_(), seen_offsets_(), members_(), |
2ea97941 | 92 | is_thin_archive_(is_thin_archive), included_member_(false), |
09ec0418 CC |
93 | nested_archives_(), dirpath_(dirpath), task_(task), num_members_(0), |
94 | incremental_info_(NULL) | |
65514900 CC |
95 | { |
96 | this->no_export_ = | |
2ea97941 | 97 | parameters->options().check_excluded_libs(input_file->found_name()); |
65514900 CC |
98 | } |
99 | ||
61ba1cf9 ILT |
100 | // Set up the archive: read the symbol map and the extended name |
101 | // table. | |
102 | ||
103 | void | |
15f8229b | 104 | Archive::setup() |
61ba1cf9 | 105 | { |
3e95a404 ILT |
106 | // We need to ignore empty archives. |
107 | if (this->input_file_->file().filesize() == sarmag) | |
a1207466 | 108 | return; |
3e95a404 | 109 | |
61ba1cf9 ILT |
110 | // The first member of the archive should be the symbol table. |
111 | std::string armap_name; | |
61ab3e40 ILT |
112 | off_t header_size = this->read_header(sarmag, false, &armap_name, NULL); |
113 | if (header_size == -1) | |
114 | return; | |
115 | ||
116 | section_size_type armap_size = convert_to_section_size_type(header_size); | |
75f2446e | 117 | off_t off = sarmag; |
4973341a ILT |
118 | if (armap_name.empty()) |
119 | { | |
120 | this->read_armap(sarmag + sizeof(Archive_header), armap_size); | |
121 | off = sarmag + sizeof(Archive_header) + armap_size; | |
122 | } | |
45aa233b | 123 | else if (!this->input_file_->options().whole_archive()) |
75f2446e ILT |
124 | gold_error(_("%s: no archive symbol table (run ranlib)"), |
125 | this->name().c_str()); | |
4973341a | 126 | |
cb295612 ILT |
127 | // See if there is an extended name table. We cache these views |
128 | // because it is likely that we will want to read the following | |
129 | // header in the add_symbols routine. | |
4973341a ILT |
130 | if ((off & 1) != 0) |
131 | ++off; | |
132 | std::string xname; | |
61ab3e40 ILT |
133 | header_size = this->read_header(off, true, &xname, NULL); |
134 | if (header_size == -1) | |
135 | return; | |
136 | ||
137 | section_size_type extended_size = convert_to_section_size_type(header_size); | |
4973341a ILT |
138 | if (xname == "/") |
139 | { | |
140 | const unsigned char* p = this->get_view(off + sizeof(Archive_header), | |
39d0cb0e | 141 | extended_size, false, true); |
4973341a ILT |
142 | const char* px = reinterpret_cast<const char*>(p); |
143 | this->extended_names_.assign(px, extended_size); | |
144 | } | |
ac45a351 CC |
145 | bool preread_syms = (parameters->options().threads() |
146 | && parameters->options().preread_archive_symbols()); | |
147 | #ifndef ENABLE_THREADS | |
148 | preread_syms = false; | |
89fc3421 CC |
149 | #else |
150 | if (parameters->options().has_plugins()) | |
151 | preread_syms = false; | |
ac45a351 CC |
152 | #endif |
153 | if (preread_syms) | |
15f8229b | 154 | this->read_all_symbols(); |
a1207466 CC |
155 | } |
156 | ||
157 | // Unlock any nested archives. | |
4973341a | 158 | |
a1207466 CC |
159 | void |
160 | Archive::unlock_nested_archives() | |
161 | { | |
162 | for (Nested_archive_table::iterator p = this->nested_archives_.begin(); | |
163 | p != this->nested_archives_.end(); | |
164 | ++p) | |
165 | { | |
166 | p->second->unlock(this->task_); | |
167 | } | |
4973341a | 168 | } |
61ba1cf9 | 169 | |
4973341a ILT |
170 | // Read the archive symbol map. |
171 | ||
172 | void | |
8383303e | 173 | Archive::read_armap(off_t start, section_size_type size) |
4973341a | 174 | { |
ac45a351 CC |
175 | // To count the total number of archive members, we'll just count |
176 | // the number of times the file offset changes. Since most archives | |
177 | // group the symbols in the armap by object, this ought to give us | |
178 | // an accurate count. | |
179 | off_t last_seen_offset = -1; | |
180 | ||
61ba1cf9 | 181 | // Read in the entire armap. |
39d0cb0e | 182 | const unsigned char* p = this->get_view(start, size, true, false); |
61ba1cf9 ILT |
183 | |
184 | // Numbers in the armap are always big-endian. | |
185 | const elfcpp::Elf_Word* pword = reinterpret_cast<const elfcpp::Elf_Word*>(p); | |
f6ce93d6 | 186 | unsigned int nsyms = elfcpp::Swap<32, true>::readval(pword); |
61ba1cf9 ILT |
187 | ++pword; |
188 | ||
189 | // Note that the addition is in units of sizeof(elfcpp::Elf_Word). | |
190 | const char* pnames = reinterpret_cast<const char*>(pword + nsyms); | |
8383303e ILT |
191 | section_size_type names_size = |
192 | reinterpret_cast<const char*>(p) + size - pnames; | |
9eb9fa57 | 193 | this->armap_names_.assign(pnames, names_size); |
61ba1cf9 ILT |
194 | |
195 | this->armap_.resize(nsyms); | |
196 | ||
8383303e | 197 | section_offset_type name_offset = 0; |
61ba1cf9 ILT |
198 | for (unsigned int i = 0; i < nsyms; ++i) |
199 | { | |
9eb9fa57 ILT |
200 | this->armap_[i].name_offset = name_offset; |
201 | this->armap_[i].file_offset = elfcpp::Swap<32, true>::readval(pword); | |
202 | name_offset += strlen(pnames + name_offset) + 1; | |
61ba1cf9 | 203 | ++pword; |
ac45a351 CC |
204 | if (this->armap_[i].file_offset != last_seen_offset) |
205 | { | |
206 | last_seen_offset = this->armap_[i].file_offset; | |
207 | ++this->num_members_; | |
208 | } | |
61ba1cf9 ILT |
209 | } |
210 | ||
8383303e | 211 | if (static_cast<section_size_type>(name_offset) > names_size) |
75f2446e ILT |
212 | gold_error(_("%s: bad archive symbol table names"), |
213 | this->name().c_str()); | |
a93d6d07 ILT |
214 | |
215 | // This array keeps track of which symbols are for archive elements | |
216 | // which we have already included in the link. | |
217 | this->armap_checked_.resize(nsyms); | |
61ba1cf9 ILT |
218 | } |
219 | ||
220 | // Read the header of an archive member at OFF. Fail if something | |
221 | // goes wrong. Return the size of the member. Set *PNAME to the name | |
222 | // of the member. | |
223 | ||
224 | off_t | |
a1207466 CC |
225 | Archive::read_header(off_t off, bool cache, std::string* pname, |
226 | off_t* nested_off) | |
61ba1cf9 | 227 | { |
39d0cb0e ILT |
228 | const unsigned char* p = this->get_view(off, sizeof(Archive_header), true, |
229 | cache); | |
61ba1cf9 | 230 | const Archive_header* hdr = reinterpret_cast<const Archive_header*>(p); |
a1207466 | 231 | return this->interpret_header(hdr, off, pname, nested_off); |
4973341a | 232 | } |
61ba1cf9 | 233 | |
4973341a | 234 | // Interpret the header of HDR, the header of the archive member at |
61ab3e40 ILT |
235 | // file offset OFF. Return the size of the member, or -1 if something |
236 | // has gone wrong. Set *PNAME to the name of the member. | |
4973341a ILT |
237 | |
238 | off_t | |
239 | Archive::interpret_header(const Archive_header* hdr, off_t off, | |
92de84a6 | 240 | std::string* pname, off_t* nested_off) const |
4973341a | 241 | { |
61ba1cf9 ILT |
242 | if (memcmp(hdr->ar_fmag, arfmag, sizeof arfmag) != 0) |
243 | { | |
75f2446e ILT |
244 | gold_error(_("%s: malformed archive header at %zu"), |
245 | this->name().c_str(), static_cast<size_t>(off)); | |
61ab3e40 | 246 | return -1; |
61ba1cf9 ILT |
247 | } |
248 | ||
249 | const int size_string_size = sizeof hdr->ar_size; | |
250 | char size_string[size_string_size + 1]; | |
251 | memcpy(size_string, hdr->ar_size, size_string_size); | |
252 | char* ps = size_string + size_string_size; | |
253 | while (ps[-1] == ' ') | |
254 | --ps; | |
255 | *ps = '\0'; | |
256 | ||
257 | errno = 0; | |
2ea97941 ILT |
258 | char* end; |
259 | off_t member_size = strtol(size_string, &end, 10); | |
260 | if (*end != '\0' | |
61ba1cf9 ILT |
261 | || member_size < 0 |
262 | || (member_size == LONG_MAX && errno == ERANGE)) | |
263 | { | |
75f2446e ILT |
264 | gold_error(_("%s: malformed archive header size at %zu"), |
265 | this->name().c_str(), static_cast<size_t>(off)); | |
61ab3e40 | 266 | return -1; |
61ba1cf9 ILT |
267 | } |
268 | ||
269 | if (hdr->ar_name[0] != '/') | |
270 | { | |
271 | const char* name_end = strchr(hdr->ar_name, '/'); | |
272 | if (name_end == NULL | |
273 | || name_end - hdr->ar_name >= static_cast<int>(sizeof hdr->ar_name)) | |
274 | { | |
a0c4fb0a | 275 | gold_error(_("%s: malformed archive header name at %zu"), |
75f2446e | 276 | this->name().c_str(), static_cast<size_t>(off)); |
61ab3e40 | 277 | return -1; |
61ba1cf9 ILT |
278 | } |
279 | pname->assign(hdr->ar_name, name_end - hdr->ar_name); | |
a1207466 CC |
280 | if (nested_off != NULL) |
281 | *nested_off = 0; | |
61ba1cf9 ILT |
282 | } |
283 | else if (hdr->ar_name[1] == ' ') | |
284 | { | |
285 | // This is the symbol table. | |
114dfbe1 ILT |
286 | if (!pname->empty()) |
287 | pname->clear(); | |
61ba1cf9 ILT |
288 | } |
289 | else if (hdr->ar_name[1] == '/') | |
290 | { | |
291 | // This is the extended name table. | |
292 | pname->assign(1, '/'); | |
293 | } | |
294 | else | |
295 | { | |
296 | errno = 0; | |
2ea97941 | 297 | long x = strtol(hdr->ar_name + 1, &end, 10); |
a1207466 | 298 | long y = 0; |
2ea97941 ILT |
299 | if (*end == ':') |
300 | y = strtol(end + 1, &end, 10); | |
301 | if (*end != ' ' | |
61ba1cf9 ILT |
302 | || x < 0 |
303 | || (x == LONG_MAX && errno == ERANGE) | |
304 | || static_cast<size_t>(x) >= this->extended_names_.size()) | |
305 | { | |
75f2446e ILT |
306 | gold_error(_("%s: bad extended name index at %zu"), |
307 | this->name().c_str(), static_cast<size_t>(off)); | |
61ab3e40 | 308 | return -1; |
61ba1cf9 ILT |
309 | } |
310 | ||
2ea97941 ILT |
311 | const char* name = this->extended_names_.data() + x; |
312 | const char* name_end = strchr(name, '\n'); | |
313 | if (static_cast<size_t>(name_end - name) > this->extended_names_.size() | |
a1207466 | 314 | || name_end[-1] != '/') |
61ba1cf9 | 315 | { |
75f2446e ILT |
316 | gold_error(_("%s: bad extended name entry at header %zu"), |
317 | this->name().c_str(), static_cast<size_t>(off)); | |
61ab3e40 | 318 | return -1; |
61ba1cf9 | 319 | } |
2ea97941 | 320 | pname->assign(name, name_end - 1 - name); |
a1207466 CC |
321 | if (nested_off != NULL) |
322 | *nested_off = y; | |
61ba1cf9 ILT |
323 | } |
324 | ||
325 | return member_size; | |
326 | } | |
327 | ||
92de84a6 ILT |
328 | // An archive member iterator. |
329 | ||
330 | class Archive::const_iterator | |
331 | { | |
332 | public: | |
333 | // The header of an archive member. This is what this iterator | |
334 | // points to. | |
335 | struct Header | |
336 | { | |
337 | // The name of the member. | |
338 | std::string name; | |
339 | // The file offset of the member. | |
340 | off_t off; | |
341 | // The file offset of a nested archive member. | |
342 | off_t nested_off; | |
343 | // The size of the member. | |
344 | off_t size; | |
345 | }; | |
346 | ||
2a00e4fb | 347 | const_iterator(Archive* archive, off_t off) |
92de84a6 ILT |
348 | : archive_(archive), off_(off) |
349 | { this->read_next_header(); } | |
350 | ||
351 | const Header& | |
352 | operator*() const | |
353 | { return this->header_; } | |
354 | ||
355 | const Header* | |
356 | operator->() const | |
357 | { return &this->header_; } | |
358 | ||
359 | const_iterator& | |
360 | operator++() | |
361 | { | |
362 | if (this->off_ == this->archive_->file().filesize()) | |
363 | return *this; | |
364 | this->off_ += sizeof(Archive_header); | |
365 | if (!this->archive_->is_thin_archive()) | |
366 | this->off_ += this->header_.size; | |
367 | if ((this->off_ & 1) != 0) | |
368 | ++this->off_; | |
369 | this->read_next_header(); | |
370 | return *this; | |
371 | } | |
372 | ||
373 | const_iterator | |
374 | operator++(int) | |
375 | { | |
376 | const_iterator ret = *this; | |
377 | ++*this; | |
378 | return ret; | |
379 | } | |
380 | ||
381 | bool | |
382 | operator==(const const_iterator p) const | |
383 | { return this->off_ == p->off; } | |
384 | ||
385 | bool | |
386 | operator!=(const const_iterator p) const | |
387 | { return this->off_ != p->off; } | |
388 | ||
389 | private: | |
390 | void | |
391 | read_next_header(); | |
392 | ||
393 | // The underlying archive. | |
2a00e4fb | 394 | Archive* archive_; |
92de84a6 ILT |
395 | // The current offset in the file. |
396 | off_t off_; | |
397 | // The current archive header. | |
398 | Header header_; | |
399 | }; | |
400 | ||
401 | // Read the next archive header. | |
4973341a ILT |
402 | |
403 | void | |
92de84a6 | 404 | Archive::const_iterator::read_next_header() |
4973341a | 405 | { |
92de84a6 | 406 | off_t filesize = this->archive_->file().filesize(); |
4973341a ILT |
407 | while (true) |
408 | { | |
92de84a6 ILT |
409 | if (filesize - this->off_ < static_cast<off_t>(sizeof(Archive_header))) |
410 | { | |
411 | if (filesize != this->off_) | |
412 | { | |
413 | gold_error(_("%s: short archive header at %zu"), | |
414 | this->archive_->filename().c_str(), | |
415 | static_cast<size_t>(this->off_)); | |
416 | this->off_ = filesize; | |
417 | } | |
418 | this->header_.off = filesize; | |
419 | return; | |
420 | } | |
421 | ||
422 | unsigned char buf[sizeof(Archive_header)]; | |
423 | this->archive_->file().read(this->off_, sizeof(Archive_header), buf); | |
424 | ||
425 | const Archive_header* hdr = reinterpret_cast<const Archive_header*>(buf); | |
61ab3e40 ILT |
426 | off_t size = this->archive_->interpret_header(hdr, this->off_, |
427 | &this->header_.name, | |
428 | &this->header_.nested_off); | |
429 | if (size == -1) | |
430 | { | |
431 | this->header_.off = filesize; | |
432 | return; | |
433 | } | |
434 | ||
435 | this->header_.size = size; | |
92de84a6 ILT |
436 | this->header_.off = this->off_; |
437 | ||
438 | // Skip special members. | |
439 | if (!this->header_.name.empty() && this->header_.name != "/") | |
440 | return; | |
441 | ||
442 | this->off_ += sizeof(Archive_header) + this->header_.size; | |
443 | if ((this->off_ & 1) != 0) | |
444 | ++this->off_; | |
4973341a ILT |
445 | } |
446 | } | |
447 | ||
92de84a6 ILT |
448 | // Initial iterator. |
449 | ||
450 | Archive::const_iterator | |
2a00e4fb | 451 | Archive::begin() |
92de84a6 ILT |
452 | { |
453 | return Archive::const_iterator(this, sarmag); | |
454 | } | |
455 | ||
456 | // Final iterator. | |
457 | ||
458 | Archive::const_iterator | |
2a00e4fb | 459 | Archive::end() |
92de84a6 ILT |
460 | { |
461 | return Archive::const_iterator(this, this->input_file_->file().filesize()); | |
462 | } | |
463 | ||
ac45a351 CC |
464 | // Get the file and offset for an archive member, which may be an |
465 | // external member of a thin archive. Set *INPUT_FILE to the | |
466 | // file containing the actual member, *MEMOFF to the offset | |
467 | // within that file (0 if not a nested archive), and *MEMBER_NAME | |
468 | // to the name of the archive member. Return TRUE on success. | |
469 | ||
470 | bool | |
2ea97941 | 471 | Archive::get_file_and_offset(off_t off, Input_file** input_file, off_t* memoff, |
89fc3421 | 472 | off_t* memsize, std::string* member_name) |
ac45a351 CC |
473 | { |
474 | off_t nested_off; | |
475 | ||
89fc3421 | 476 | *memsize = this->read_header(off, false, member_name, &nested_off); |
61ab3e40 ILT |
477 | if (*memsize == -1) |
478 | return false; | |
ac45a351 | 479 | |
2ea97941 | 480 | *input_file = this->input_file_; |
ac45a351 CC |
481 | *memoff = off + static_cast<off_t>(sizeof(Archive_header)); |
482 | ||
483 | if (!this->is_thin_archive_) | |
484 | return true; | |
485 | ||
486 | // Adjust a relative pathname so that it is relative | |
487 | // to the directory containing the archive. | |
488 | if (!IS_ABSOLUTE_PATH(member_name->c_str())) | |
489 | { | |
fbd8a257 | 490 | const char* arch_path = this->filename().c_str(); |
ac45a351 CC |
491 | const char* basename = lbasename(arch_path); |
492 | if (basename > arch_path) | |
493 | member_name->replace(0, 0, | |
fbd8a257 | 494 | this->filename().substr(0, basename - arch_path)); |
ac45a351 CC |
495 | } |
496 | ||
497 | if (nested_off > 0) | |
498 | { | |
499 | // This is a member of a nested archive. Open the containing | |
500 | // archive if we don't already have it open, then do a recursive | |
501 | // call to include the member from that archive. | |
502 | Archive* arch; | |
503 | Nested_archive_table::const_iterator p = | |
504 | this->nested_archives_.find(*member_name); | |
505 | if (p != this->nested_archives_.end()) | |
506 | arch = p->second; | |
507 | else | |
508 | { | |
509 | Input_file_argument* input_file_arg = | |
ae3b5189 CD |
510 | new Input_file_argument(member_name->c_str(), |
511 | Input_file_argument::INPUT_FILE_TYPE_FILE, | |
512 | "", false, parameters->options()); | |
2ea97941 | 513 | *input_file = new Input_file(input_file_arg); |
15f8229b | 514 | int dummy = 0; |
2ea97941 | 515 | if (!(*input_file)->open(*this->dirpath_, this->task_, &dummy)) |
ac45a351 | 516 | return false; |
2ea97941 | 517 | arch = new Archive(*member_name, *input_file, false, this->dirpath_, |
ac45a351 | 518 | this->task_); |
15f8229b | 519 | arch->setup(); |
ac45a351 CC |
520 | std::pair<Nested_archive_table::iterator, bool> ins = |
521 | this->nested_archives_.insert(std::make_pair(*member_name, arch)); | |
522 | gold_assert(ins.second); | |
523 | } | |
2ea97941 | 524 | return arch->get_file_and_offset(nested_off, input_file, memoff, |
15f8229b | 525 | memsize, member_name); |
ac45a351 CC |
526 | } |
527 | ||
528 | // This is an external member of a thin archive. Open the | |
529 | // file as a regular relocatable object file. | |
530 | Input_file_argument* input_file_arg = | |
ae3b5189 CD |
531 | new Input_file_argument(member_name->c_str(), |
532 | Input_file_argument::INPUT_FILE_TYPE_FILE, | |
533 | "", false, this->input_file_->options()); | |
2ea97941 | 534 | *input_file = new Input_file(input_file_arg); |
15f8229b | 535 | int dummy = 0; |
2ea97941 | 536 | if (!(*input_file)->open(*this->dirpath_, this->task_, &dummy)) |
ac45a351 CC |
537 | return false; |
538 | ||
539 | *memoff = 0; | |
2ea97941 | 540 | *memsize = (*input_file)->file().filesize(); |
ac45a351 CC |
541 | return true; |
542 | } | |
543 | ||
c20cbc06 ILT |
544 | // Return an ELF object for the member at offset OFF. If |
545 | // PUNCONFIGURED is not NULL, then if the ELF object has an | |
546 | // unsupported target type, set *PUNCONFIGURED to true and return | |
547 | // NULL. | |
ac45a351 CC |
548 | |
549 | Object* | |
15f8229b | 550 | Archive::get_elf_object_for_member(off_t off, bool* punconfigured) |
ac45a351 | 551 | { |
c20cbc06 ILT |
552 | if (punconfigured != NULL) |
553 | *punconfigured = false; | |
15f8229b | 554 | |
2ea97941 | 555 | Input_file* input_file; |
ac45a351 | 556 | off_t memoff; |
89fc3421 | 557 | off_t memsize; |
15f8229b | 558 | std::string member_name; |
2ea97941 | 559 | if (!this->get_file_and_offset(off, &input_file, &memoff, &memsize, |
15f8229b | 560 | &member_name)) |
ac45a351 CC |
561 | return NULL; |
562 | ||
89fc3421 CC |
563 | if (parameters->options().has_plugins()) |
564 | { | |
2ea97941 | 565 | Object* obj = parameters->options().plugins()->claim_file(input_file, |
89fc3421 CC |
566 | memoff, |
567 | memsize); | |
568 | if (obj != NULL) | |
569 | { | |
570 | // The input file was claimed by a plugin, and its symbols | |
571 | // have been provided by the plugin. | |
89fc3421 CC |
572 | return obj; |
573 | } | |
574 | } | |
575 | ||
f6060a4d ILT |
576 | const unsigned char* ehdr; |
577 | int read_size; | |
2ea97941 | 578 | if (!is_elf_object(input_file, memoff, &ehdr, &read_size)) |
ac45a351 CC |
579 | { |
580 | gold_error(_("%s: member at %zu is not an ELF object"), | |
581 | this->name().c_str(), static_cast<size_t>(off)); | |
582 | return NULL; | |
583 | } | |
584 | ||
ca09d69a | 585 | Object* obj = make_elf_object((std::string(this->input_file_->filename()) |
65514900 | 586 | + "(" + member_name + ")"), |
2ea97941 | 587 | input_file, memoff, ehdr, read_size, |
65514900 | 588 | punconfigured); |
029ba973 ILT |
589 | if (obj == NULL) |
590 | return NULL; | |
65514900 CC |
591 | obj->set_no_export(this->no_export()); |
592 | return obj; | |
ac45a351 CC |
593 | } |
594 | ||
595 | // Read the symbols from all the archive members in the link. | |
596 | ||
597 | void | |
15f8229b | 598 | Archive::read_all_symbols() |
ac45a351 CC |
599 | { |
600 | for (Archive::const_iterator p = this->begin(); | |
601 | p != this->end(); | |
602 | ++p) | |
15f8229b | 603 | this->read_symbols(p->off); |
ac45a351 CC |
604 | } |
605 | ||
606 | // Read the symbols from an archive member in the link. OFF is the file | |
607 | // offset of the member header. | |
608 | ||
609 | void | |
15f8229b | 610 | Archive::read_symbols(off_t off) |
ac45a351 | 611 | { |
c20cbc06 | 612 | Object* obj = this->get_elf_object_for_member(off, NULL); |
ac45a351 CC |
613 | if (obj == NULL) |
614 | return; | |
615 | ||
616 | Read_symbols_data* sd = new Read_symbols_data; | |
617 | obj->read_symbols(sd); | |
618 | Archive_member member(obj, sd); | |
619 | this->members_[off] = member; | |
620 | } | |
621 | ||
b0193076 | 622 | Archive::Should_include |
88a4108b ILT |
623 | Archive::should_include_member(Symbol_table* symtab, Layout* layout, |
624 | const char* sym_name, Symbol** symp, | |
625 | std::string* why, char** tmpbufp, | |
b0193076 | 626 | size_t* tmpbuflen) |
473b7a13 RÁE |
627 | { |
628 | // In an object file, and therefore in an archive map, an | |
629 | // '@' in the name separates the symbol name from the | |
630 | // version name. If there are two '@' characters, this is | |
631 | // the default version. | |
632 | char* tmpbuf = *tmpbufp; | |
633 | const char* ver = strchr(sym_name, '@'); | |
634 | bool def = false; | |
635 | if (ver != NULL) | |
636 | { | |
637 | size_t symlen = ver - sym_name; | |
638 | if (symlen + 1 > *tmpbuflen) | |
639 | { | |
640 | tmpbuf = static_cast<char*>(xrealloc(tmpbuf, symlen + 1)); | |
641 | *tmpbufp = tmpbuf; | |
642 | *tmpbuflen = symlen + 1; | |
643 | } | |
644 | memcpy(tmpbuf, sym_name, symlen); | |
645 | tmpbuf[symlen] = '\0'; | |
646 | sym_name = tmpbuf; | |
647 | ||
648 | ++ver; | |
649 | if (*ver == '@') | |
650 | { | |
651 | ++ver; | |
652 | def = true; | |
653 | } | |
654 | } | |
655 | ||
656 | Symbol* sym = symtab->lookup(sym_name, ver); | |
657 | if (def | |
658 | && ver != NULL | |
659 | && (sym == NULL | |
660 | || !sym->is_undefined() | |
661 | || sym->binding() == elfcpp::STB_WEAK)) | |
662 | sym = symtab->lookup(sym_name, NULL); | |
663 | ||
664 | *symp = sym; | |
665 | ||
666 | if (sym == NULL) | |
667 | { | |
668 | // Check whether the symbol was named in a -u option. | |
88a4108b | 669 | if (parameters->options().is_undefined(sym_name)) |
473b7a13 RÁE |
670 | { |
671 | *why = "-u "; | |
672 | *why += sym_name; | |
673 | } | |
88a4108b ILT |
674 | else if (layout->script_options()->is_referenced(sym_name)) |
675 | { | |
676 | size_t alc = 100 + strlen(sym_name); | |
677 | char* buf = new char[alc]; | |
678 | snprintf(buf, alc, _("script or expression reference to %s"), | |
679 | sym_name); | |
680 | *why = buf; | |
681 | delete[] buf; | |
682 | } | |
683 | else | |
684 | return Archive::SHOULD_INCLUDE_UNKNOWN; | |
473b7a13 RÁE |
685 | } |
686 | else if (!sym->is_undefined()) | |
b0193076 | 687 | return Archive::SHOULD_INCLUDE_NO; |
e597fa08 NC |
688 | // PR 12001: Do not include an archive when the undefined |
689 | // symbol has actually been defined on the command line. | |
690 | else if (layout->script_options()->is_pending_assignment(sym_name)) | |
691 | return Archive::SHOULD_INCLUDE_NO; | |
473b7a13 | 692 | else if (sym->binding() == elfcpp::STB_WEAK) |
b0193076 | 693 | return Archive::SHOULD_INCLUDE_UNKNOWN; |
473b7a13 | 694 | |
b0193076 | 695 | return Archive::SHOULD_INCLUDE_YES; |
473b7a13 RÁE |
696 | } |
697 | ||
ac45a351 CC |
698 | // Select members from the archive and add them to the link. We walk |
699 | // through the elements in the archive map, and look each one up in | |
700 | // the symbol table. If it exists as a strong undefined symbol, we | |
701 | // pull in the corresponding element. We have to do this in a loop, | |
702 | // since pulling in one element may create new undefined symbols which | |
15f8229b ILT |
703 | // may be satisfied by other objects in the archive. Return true in |
704 | // the normal case, false if the first member we tried to add from | |
705 | // this archive had an incompatible target. | |
ac45a351 | 706 | |
15f8229b | 707 | bool |
ac45a351 CC |
708 | Archive::add_symbols(Symbol_table* symtab, Layout* layout, |
709 | Input_objects* input_objects, Mapfile* mapfile) | |
710 | { | |
711 | ++Archive::total_archives; | |
712 | ||
713 | if (this->input_file_->options().whole_archive()) | |
714 | return this->include_all_members(symtab, layout, input_objects, | |
715 | mapfile); | |
716 | ||
717 | Archive::total_members += this->num_members_; | |
718 | ||
719 | input_objects->archive_start(this); | |
720 | ||
721 | const size_t armap_size = this->armap_.size(); | |
722 | ||
723 | // This is a quick optimization, since we usually see many symbols | |
724 | // in a row with the same offset. last_seen_offset holds the last | |
725 | // offset we saw that was present in the seen_offsets_ set. | |
726 | off_t last_seen_offset = -1; | |
727 | ||
728 | // Track which symbols in the symbol table we've already found to be | |
729 | // defined. | |
730 | ||
9c5b8369 ILT |
731 | char* tmpbuf = NULL; |
732 | size_t tmpbuflen = 0; | |
ac45a351 CC |
733 | bool added_new_object; |
734 | do | |
735 | { | |
736 | added_new_object = false; | |
737 | for (size_t i = 0; i < armap_size; ++i) | |
738 | { | |
739 | if (this->armap_checked_[i]) | |
740 | continue; | |
741 | if (this->armap_[i].file_offset == last_seen_offset) | |
742 | { | |
743 | this->armap_checked_[i] = true; | |
744 | continue; | |
745 | } | |
746 | if (this->seen_offsets_.find(this->armap_[i].file_offset) | |
747 | != this->seen_offsets_.end()) | |
748 | { | |
749 | this->armap_checked_[i] = true; | |
750 | last_seen_offset = this->armap_[i].file_offset; | |
751 | continue; | |
752 | } | |
753 | ||
754 | const char* sym_name = (this->armap_names_.data() | |
755 | + this->armap_[i].name_offset); | |
9c5b8369 | 756 | |
473b7a13 RÁE |
757 | Symbol* sym; |
758 | std::string why; | |
b0193076 | 759 | Archive::Should_include t = |
88a4108b ILT |
760 | Archive::should_include_member(symtab, layout, sym_name, &sym, |
761 | &why, &tmpbuf, &tmpbuflen); | |
9c5b8369 | 762 | |
b0193076 RÁE |
763 | if (t == Archive::SHOULD_INCLUDE_NO |
764 | || t == Archive::SHOULD_INCLUDE_YES) | |
473b7a13 | 765 | this->armap_checked_[i] = true; |
9c5b8369 | 766 | |
b0193076 | 767 | if (t != Archive::SHOULD_INCLUDE_YES) |
ac45a351 CC |
768 | continue; |
769 | ||
770 | // We want to include this object in the link. | |
771 | last_seen_offset = this->armap_[i].file_offset; | |
772 | this->seen_offsets_.insert(last_seen_offset); | |
ac45a351 | 773 | |
15f8229b ILT |
774 | if (!this->include_member(symtab, layout, input_objects, |
775 | last_seen_offset, mapfile, sym, | |
776 | why.c_str())) | |
9c5b8369 ILT |
777 | { |
778 | if (tmpbuf != NULL) | |
779 | free(tmpbuf); | |
780 | return false; | |
781 | } | |
ac45a351 CC |
782 | |
783 | added_new_object = true; | |
784 | } | |
785 | } | |
786 | while (added_new_object); | |
787 | ||
9c5b8369 ILT |
788 | if (tmpbuf != NULL) |
789 | free(tmpbuf); | |
790 | ||
ac45a351 | 791 | input_objects->archive_stop(this); |
15f8229b ILT |
792 | |
793 | return true; | |
ac45a351 CC |
794 | } |
795 | ||
0f3b89d8 ILT |
796 | // Return whether the archive includes a member which defines the |
797 | // symbol SYM. | |
798 | ||
799 | bool | |
800 | Archive::defines_symbol(Symbol* sym) const | |
801 | { | |
802 | const char* symname = sym->name(); | |
803 | size_t symname_len = strlen(symname); | |
804 | size_t armap_size = this->armap_.size(); | |
805 | for (size_t i = 0; i < armap_size; ++i) | |
806 | { | |
807 | if (this->armap_checked_[i]) | |
808 | continue; | |
809 | const char* archive_symname = (this->armap_names_.data() | |
810 | + this->armap_[i].name_offset); | |
811 | if (strncmp(archive_symname, symname, symname_len) != 0) | |
812 | continue; | |
813 | char c = archive_symname[symname_len]; | |
814 | if (c == '\0' && sym->version() == NULL) | |
815 | return true; | |
816 | if (c == '@') | |
817 | { | |
818 | const char* ver = archive_symname + symname_len + 1; | |
819 | if (*ver == '@') | |
820 | { | |
821 | if (sym->version() == NULL) | |
822 | return true; | |
823 | ++ver; | |
824 | } | |
825 | if (sym->version() != NULL && strcmp(sym->version(), ver) == 0) | |
826 | return true; | |
827 | } | |
828 | } | |
829 | return false; | |
830 | } | |
831 | ||
92de84a6 ILT |
832 | // Include all the archive members in the link. This is for --whole-archive. |
833 | ||
15f8229b | 834 | bool |
92de84a6 ILT |
835 | Archive::include_all_members(Symbol_table* symtab, Layout* layout, |
836 | Input_objects* input_objects, Mapfile* mapfile) | |
837 | { | |
838 | input_objects->archive_start(this); | |
839 | ||
ac45a351 CC |
840 | if (this->members_.size() > 0) |
841 | { | |
842 | std::map<off_t, Archive_member>::const_iterator p; | |
843 | for (p = this->members_.begin(); | |
844 | p != this->members_.end(); | |
845 | ++p) | |
846 | { | |
15f8229b ILT |
847 | if (!this->include_member(symtab, layout, input_objects, p->first, |
848 | mapfile, NULL, "--whole-archive")) | |
849 | return false; | |
ac45a351 CC |
850 | ++Archive::total_members; |
851 | } | |
852 | } | |
853 | else | |
854 | { | |
855 | for (Archive::const_iterator p = this->begin(); | |
856 | p != this->end(); | |
857 | ++p) | |
858 | { | |
15f8229b ILT |
859 | if (!this->include_member(symtab, layout, input_objects, p->off, |
860 | mapfile, NULL, "--whole-archive")) | |
861 | return false; | |
ac45a351 CC |
862 | ++Archive::total_members; |
863 | } | |
864 | } | |
92de84a6 ILT |
865 | |
866 | input_objects->archive_stop(this); | |
15f8229b ILT |
867 | |
868 | return true; | |
92de84a6 ILT |
869 | } |
870 | ||
871 | // Return the number of members in the archive. This is only used for | |
872 | // reports. | |
873 | ||
874 | size_t | |
2a00e4fb | 875 | Archive::count_members() |
92de84a6 ILT |
876 | { |
877 | size_t ret = 0; | |
878 | for (Archive::const_iterator p = this->begin(); | |
879 | p != this->end(); | |
880 | ++p) | |
881 | ++ret; | |
882 | return ret; | |
883 | } | |
884 | ||
61ba1cf9 | 885 | // Include an archive member in the link. OFF is the file offset of |
7d9e3d98 | 886 | // the member header. WHY is the reason we are including this member. |
15f8229b ILT |
887 | // Return true if we added the member or if we had an error, return |
888 | // false if this was the first member we tried to add from this | |
889 | // archive and it had an incompatible format. | |
61ba1cf9 | 890 | |
15f8229b | 891 | bool |
7e1edb90 | 892 | Archive::include_member(Symbol_table* symtab, Layout* layout, |
7d9e3d98 ILT |
893 | Input_objects* input_objects, off_t off, |
894 | Mapfile* mapfile, Symbol* sym, const char* why) | |
61ba1cf9 | 895 | { |
ac45a351 | 896 | ++Archive::total_members_loaded; |
7d9e3d98 | 897 | |
ac45a351 CC |
898 | std::map<off_t, Archive_member>::const_iterator p = this->members_.find(off); |
899 | if (p != this->members_.end()) | |
a1207466 | 900 | { |
ca09d69a | 901 | Object* obj = p->second.obj_; |
15f8229b | 902 | |
ca09d69a | 903 | Read_symbols_data* sd = p->second.sd_; |
ac45a351 CC |
904 | if (mapfile != NULL) |
905 | mapfile->report_include_archive_member(obj->name(), sym, why); | |
906 | if (input_objects->add_object(obj)) | |
a1207466 | 907 | { |
ac45a351 | 908 | obj->layout(symtab, layout, sd); |
f488e4b0 | 909 | obj->add_symbols(symtab, sd, layout); |
15f8229b | 910 | this->included_member_ = true; |
a1207466 | 911 | } |
ac45a351 | 912 | delete sd; |
15f8229b ILT |
913 | return true; |
914 | } | |
915 | ||
c20cbc06 ILT |
916 | // If this is the first object we are including from this archive, |
917 | // and we searched for this archive, most likely because it was | |
918 | // found via a -l option, then if the target is incompatible we want | |
919 | // to move on to the next archive found in the search path. | |
920 | bool unconfigured = false; | |
921 | bool* punconfigured = NULL; | |
922 | if (!this->included_member_ && this->searched_for()) | |
923 | punconfigured = &unconfigured; | |
61ba1cf9 | 924 | |
c20cbc06 | 925 | Object* obj = this->get_elf_object_for_member(off, punconfigured); |
ac45a351 | 926 | if (obj == NULL) |
c20cbc06 ILT |
927 | { |
928 | // Return false to search for another archive, true if we found | |
929 | // an error. | |
930 | return unconfigured ? false : true; | |
931 | } | |
61ba1cf9 | 932 | |
ac45a351 CC |
933 | if (mapfile != NULL) |
934 | mapfile->report_include_archive_member(obj->name(), sym, why); | |
61ba1cf9 | 935 | |
89fc3421 CC |
936 | Pluginobj* pluginobj = obj->pluginobj(); |
937 | if (pluginobj != NULL) | |
938 | { | |
f488e4b0 | 939 | pluginobj->add_symbols(symtab, NULL, layout); |
15f8229b ILT |
940 | this->included_member_ = true; |
941 | return true; | |
89fc3421 CC |
942 | } |
943 | ||
15f8229b | 944 | if (!input_objects->add_object(obj)) |
f2d707b5 ILT |
945 | { |
946 | // If this is an external member of a thin archive, unlock the | |
947 | // file. | |
948 | if (obj->offset() == 0) | |
949 | obj->unlock(this->task_); | |
950 | delete obj; | |
951 | } | |
15f8229b | 952 | else |
019cdb1a | 953 | { |
00698fc5 | 954 | { |
09ec0418 CC |
955 | if (layout->incremental_inputs() != NULL) |
956 | layout->incremental_inputs()->report_object(obj, this); | |
00698fc5 CC |
957 | Read_symbols_data sd; |
958 | obj->read_symbols(&sd); | |
959 | obj->layout(symtab, layout, &sd); | |
960 | obj->add_symbols(symtab, &sd, layout); | |
961 | } | |
fbd8a257 CC |
962 | |
963 | // If this is an external member of a thin archive, unlock the file | |
964 | // for the next task. | |
965 | if (obj->offset() == 0) | |
966 | obj->unlock(this->task_); | |
15f8229b ILT |
967 | |
968 | this->included_member_ = true; | |
019cdb1a | 969 | } |
15f8229b ILT |
970 | |
971 | return true; | |
ac45a351 | 972 | } |
61ba1cf9 | 973 | |
ac45a351 CC |
974 | // Print statistical information to stderr. This is used for --stats. |
975 | ||
976 | void | |
977 | Archive::print_stats() | |
978 | { | |
979 | fprintf(stderr, _("%s: archive libraries: %u\n"), | |
980 | program_name, Archive::total_archives); | |
981 | fprintf(stderr, _("%s: total archive members: %u\n"), | |
982 | program_name, Archive::total_members); | |
983 | fprintf(stderr, _("%s: loaded archive members: %u\n"), | |
984 | program_name, Archive::total_members_loaded); | |
61ba1cf9 ILT |
985 | } |
986 | ||
987 | // Add_archive_symbols methods. | |
988 | ||
989 | Add_archive_symbols::~Add_archive_symbols() | |
990 | { | |
991 | if (this->this_blocker_ != NULL) | |
992 | delete this->this_blocker_; | |
993 | // next_blocker_ is deleted by the task associated with the next | |
994 | // input file. | |
995 | } | |
996 | ||
997 | // Return whether we can add the archive symbols. We are blocked by | |
998 | // this_blocker_. We block next_blocker_. We also lock the file. | |
999 | ||
17a1d0a9 ILT |
1000 | Task_token* |
1001 | Add_archive_symbols::is_runnable() | |
61ba1cf9 ILT |
1002 | { |
1003 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
17a1d0a9 ILT |
1004 | return this->this_blocker_; |
1005 | return NULL; | |
61ba1cf9 ILT |
1006 | } |
1007 | ||
17a1d0a9 ILT |
1008 | void |
1009 | Add_archive_symbols::locks(Task_locker* tl) | |
61ba1cf9 | 1010 | { |
17a1d0a9 ILT |
1011 | tl->add(this, this->next_blocker_); |
1012 | tl->add(this, this->archive_->token()); | |
61ba1cf9 ILT |
1013 | } |
1014 | ||
1015 | void | |
15f8229b | 1016 | Add_archive_symbols::run(Workqueue* workqueue) |
61ba1cf9 | 1017 | { |
09ec0418 CC |
1018 | // For an incremental link, begin recording layout information. |
1019 | Incremental_inputs* incremental_inputs = this->layout_->incremental_inputs(); | |
1020 | if (incremental_inputs != NULL) | |
1021 | incremental_inputs->report_archive_begin(this->archive_); | |
1022 | ||
15f8229b ILT |
1023 | bool added = this->archive_->add_symbols(this->symtab_, this->layout_, |
1024 | this->input_objects_, | |
1025 | this->mapfile_); | |
a1207466 CC |
1026 | this->archive_->unlock_nested_archives(); |
1027 | ||
17a1d0a9 | 1028 | this->archive_->release(); |
39d0cb0e | 1029 | this->archive_->clear_uncached_views(); |
17a1d0a9 | 1030 | |
15f8229b ILT |
1031 | if (!added) |
1032 | { | |
1033 | // This archive holds object files which are incompatible with | |
1034 | // our output file. | |
1035 | Read_symbols::incompatible_warning(this->input_argument_, | |
1036 | this->archive_->input_file()); | |
1037 | Read_symbols::requeue(workqueue, this->input_objects_, this->symtab_, | |
1038 | this->layout_, this->dirpath_, this->dirindex_, | |
1039 | this->mapfile_, this->input_argument_, | |
1040 | this->input_group_, this->next_blocker_); | |
1041 | delete this->archive_; | |
1042 | return; | |
1043 | } | |
1044 | ||
ead1e424 ILT |
1045 | if (this->input_group_ != NULL) |
1046 | this->input_group_->add_archive(this->archive_); | |
1047 | else | |
1048 | { | |
09ec0418 CC |
1049 | // For an incremental link, finish recording the layout information. |
1050 | Incremental_inputs* incremental_inputs = this->layout_->incremental_inputs(); | |
1051 | if (incremental_inputs != NULL) | |
1052 | incremental_inputs->report_archive_end(this->archive_); | |
1053 | ||
0f3b89d8 ILT |
1054 | if (!parameters->options().has_plugins() |
1055 | || this->archive_->input_file()->options().whole_archive()) | |
1056 | { | |
1057 | // We no longer need to know about this archive. | |
1058 | delete this->archive_; | |
1059 | } | |
1060 | else | |
1061 | { | |
1062 | // The plugin interface may want to rescan this archive. | |
1063 | parameters->options().plugins()->save_archive(this->archive_); | |
1064 | } | |
1065 | ||
c7912668 | 1066 | this->archive_ = NULL; |
ead1e424 | 1067 | } |
61ba1cf9 ILT |
1068 | } |
1069 | ||
b0193076 RÁE |
1070 | // Class Lib_group static variables. |
1071 | unsigned int Lib_group::total_lib_groups; | |
1072 | unsigned int Lib_group::total_members; | |
1073 | unsigned int Lib_group::total_members_loaded; | |
1074 | ||
1075 | Lib_group::Lib_group(const Input_file_lib* lib, Task* task) | |
1076 | : lib_(lib), task_(task), members_() | |
1077 | { | |
1078 | this->members_.resize(lib->size()); | |
1079 | } | |
1080 | ||
1081 | // Select members from the lib group and add them to the link. We walk | |
9b547ce6 | 1082 | // through the members, and check if each one up should be included. |
b0193076 RÁE |
1083 | // If the object says it should be included, we do so. We have to do |
1084 | // this in a loop, since including one member may create new undefined | |
1085 | // symbols which may be satisfied by other members. | |
1086 | ||
1087 | void | |
1088 | Lib_group::add_symbols(Symbol_table* symtab, Layout* layout, | |
1089 | Input_objects* input_objects) | |
1090 | { | |
1091 | ++Lib_group::total_lib_groups; | |
1092 | ||
1093 | Lib_group::total_members += this->members_.size(); | |
1094 | ||
1095 | bool added_new_object; | |
1096 | do | |
1097 | { | |
1098 | added_new_object = false; | |
1099 | unsigned int i = 0; | |
1100 | while (i < this->members_.size()) | |
1101 | { | |
1102 | const Archive_member& member = this->members_[i]; | |
ca09d69a | 1103 | Object* obj = member.obj_; |
b0193076 RÁE |
1104 | std::string why; |
1105 | ||
1106 | // Skip files with no symbols. Plugin objects have | |
1107 | // member.sd_ == NULL. | |
1108 | if (obj != NULL | |
1109 | && (member.sd_ == NULL || member.sd_->symbol_names != NULL)) | |
1110 | { | |
1111 | Archive::Should_include t = obj->should_include_member(symtab, | |
88a4108b | 1112 | layout, |
b0193076 RÁE |
1113 | member.sd_, |
1114 | &why); | |
1115 | ||
1116 | if (t != Archive::SHOULD_INCLUDE_YES) | |
1117 | { | |
1118 | ++i; | |
1119 | continue; | |
1120 | } | |
1121 | ||
1122 | this->include_member(symtab, layout, input_objects, member); | |
1123 | ||
1124 | added_new_object = true; | |
1125 | } | |
1126 | else | |
1127 | { | |
1128 | if (member.sd_ != NULL) | |
9919d93b CC |
1129 | { |
1130 | // The file must be locked in order to destroy the views | |
1131 | // associated with it. | |
1132 | gold_assert(obj != NULL); | |
1133 | obj->lock(this->task_); | |
1134 | delete member.sd_; | |
1135 | obj->unlock(this->task_); | |
1136 | } | |
b0193076 RÁE |
1137 | } |
1138 | ||
1139 | this->members_[i] = this->members_.back(); | |
1140 | this->members_.pop_back(); | |
1141 | } | |
1142 | } | |
1143 | while (added_new_object); | |
1144 | } | |
1145 | ||
1146 | // Include a lib group member in the link. | |
1147 | ||
1148 | void | |
1149 | Lib_group::include_member(Symbol_table* symtab, Layout* layout, | |
1150 | Input_objects* input_objects, | |
1151 | const Archive_member& member) | |
1152 | { | |
1153 | ++Lib_group::total_members_loaded; | |
1154 | ||
1155 | Object* obj = member.obj_; | |
1156 | gold_assert(obj != NULL); | |
1157 | ||
1158 | Pluginobj* pluginobj = obj->pluginobj(); | |
1159 | if (pluginobj != NULL) | |
1160 | { | |
1161 | pluginobj->add_symbols(symtab, NULL, layout); | |
1162 | return; | |
1163 | } | |
1164 | ||
1165 | Read_symbols_data* sd = member.sd_; | |
1166 | gold_assert(sd != NULL); | |
1167 | obj->lock(this->task_); | |
1168 | if (input_objects->add_object(obj)) | |
1169 | { | |
09ec0418 CC |
1170 | // FIXME: Record incremental link info for --start-lib/--end-lib. |
1171 | if (layout->incremental_inputs() != NULL) | |
1172 | layout->incremental_inputs()->report_object(obj, NULL); | |
b0193076 RÁE |
1173 | obj->layout(symtab, layout, sd); |
1174 | obj->add_symbols(symtab, sd, layout); | |
b0193076 RÁE |
1175 | } |
1176 | delete sd; | |
9919d93b CC |
1177 | // Unlock the file for the next task. |
1178 | obj->unlock(this->task_); | |
b0193076 RÁE |
1179 | } |
1180 | ||
1181 | // Print statistical information to stderr. This is used for --stats. | |
1182 | ||
1183 | void | |
1184 | Lib_group::print_stats() | |
1185 | { | |
1186 | fprintf(stderr, _("%s: lib groups: %u\n"), | |
1187 | program_name, Lib_group::total_lib_groups); | |
1188 | fprintf(stderr, _("%s: total lib groups members: %u\n"), | |
1189 | program_name, Lib_group::total_members); | |
1190 | fprintf(stderr, _("%s: loaded lib groups members: %u\n"), | |
1191 | program_name, Lib_group::total_members_loaded); | |
1192 | } | |
1193 | ||
1194 | Task_token* | |
1195 | Add_lib_group_symbols::is_runnable() | |
1196 | { | |
97b4be1c CC |
1197 | if (this->readsyms_blocker_ != NULL && this->readsyms_blocker_->is_blocked()) |
1198 | return this->readsyms_blocker_; | |
b0193076 RÁE |
1199 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) |
1200 | return this->this_blocker_; | |
1201 | return NULL; | |
1202 | } | |
1203 | ||
1204 | void | |
1205 | Add_lib_group_symbols::locks(Task_locker* tl) | |
1206 | { | |
1207 | tl->add(this, this->next_blocker_); | |
1208 | } | |
1209 | ||
1210 | void | |
1211 | Add_lib_group_symbols::run(Workqueue*) | |
1212 | { | |
1213 | this->lib_->add_symbols(this->symtab_, this->layout_, this->input_objects_); | |
09ec0418 CC |
1214 | |
1215 | // FIXME: Record incremental link info for --start_lib/--end_lib. | |
b0193076 RÁE |
1216 | } |
1217 | ||
1218 | Add_lib_group_symbols::~Add_lib_group_symbols() | |
1219 | { | |
1220 | if (this->this_blocker_ != NULL) | |
1221 | delete this->this_blocker_; | |
1222 | // next_blocker_ is deleted by the task associated with the next | |
1223 | // input file. | |
1224 | } | |
1225 | ||
61ba1cf9 | 1226 | } // End namespace gold. |