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61ba1cf9 ILT |
1 | // archive.cc -- archive support for gold |
2 | ||
ebdbb458 | 3 | // Copyright 2006, 2007, 2008 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" |
61ba1cf9 | 34 | #include "fileread.h" |
ead1e424 | 35 | #include "readsyms.h" |
61ba1cf9 ILT |
36 | #include "symtab.h" |
37 | #include "object.h" | |
38 | #include "archive.h" | |
39 | ||
40 | namespace gold | |
41 | { | |
42 | ||
43 | // The header of an entry in the archive. This is all readable text, | |
44 | // padded with spaces where necesary. If the contents of an archive | |
45 | // are all text file, the entire archive is readable. | |
46 | ||
47 | struct Archive::Archive_header | |
48 | { | |
49 | // The entry name. | |
50 | char ar_name[16]; | |
51 | // The file modification time. | |
52 | char ar_date[12]; | |
53 | // The user's UID in decimal. | |
54 | char ar_uid[6]; | |
55 | // The user's GID in decimal. | |
56 | char ar_gid[6]; | |
57 | // The file mode in octal. | |
58 | char ar_mode[8]; | |
59 | // The file size in decimal. | |
60 | char ar_size[10]; | |
61 | // The final magic code. | |
62 | char ar_fmag[2]; | |
63 | }; | |
64 | ||
65 | // Archive methods. | |
66 | ||
67 | const char Archive::armag[sarmag] = | |
68 | { | |
69 | '!', '<', 'a', 'r', 'c', 'h', '>', '\n' | |
70 | }; | |
71 | ||
a1207466 CC |
72 | const char Archive::armagt[sarmag] = |
73 | { | |
74 | '!', '<', 't', 'h', 'i', 'n', '>', '\n' | |
75 | }; | |
76 | ||
61ba1cf9 ILT |
77 | const char Archive::arfmag[2] = { '`', '\n' }; |
78 | ||
61ba1cf9 ILT |
79 | // Set up the archive: read the symbol map and the extended name |
80 | // table. | |
81 | ||
82 | void | |
a1207466 | 83 | Archive::setup() |
61ba1cf9 | 84 | { |
3e95a404 ILT |
85 | // We need to ignore empty archives. |
86 | if (this->input_file_->file().filesize() == sarmag) | |
a1207466 | 87 | return; |
3e95a404 | 88 | |
61ba1cf9 ILT |
89 | // The first member of the archive should be the symbol table. |
90 | std::string armap_name; | |
8383303e | 91 | section_size_type armap_size = |
cb295612 | 92 | convert_to_section_size_type(this->read_header(sarmag, false, |
a1207466 | 93 | &armap_name, NULL)); |
75f2446e | 94 | off_t off = sarmag; |
4973341a ILT |
95 | if (armap_name.empty()) |
96 | { | |
97 | this->read_armap(sarmag + sizeof(Archive_header), armap_size); | |
98 | off = sarmag + sizeof(Archive_header) + armap_size; | |
99 | } | |
45aa233b | 100 | else if (!this->input_file_->options().whole_archive()) |
75f2446e ILT |
101 | gold_error(_("%s: no archive symbol table (run ranlib)"), |
102 | this->name().c_str()); | |
4973341a | 103 | |
cb295612 ILT |
104 | // See if there is an extended name table. We cache these views |
105 | // because it is likely that we will want to read the following | |
106 | // header in the add_symbols routine. | |
4973341a ILT |
107 | if ((off & 1) != 0) |
108 | ++off; | |
109 | std::string xname; | |
cb295612 | 110 | section_size_type extended_size = |
a1207466 | 111 | convert_to_section_size_type(this->read_header(off, true, &xname, NULL)); |
4973341a ILT |
112 | if (xname == "/") |
113 | { | |
114 | const unsigned char* p = this->get_view(off + sizeof(Archive_header), | |
cb295612 | 115 | extended_size, true); |
4973341a ILT |
116 | const char* px = reinterpret_cast<const char*>(p); |
117 | this->extended_names_.assign(px, extended_size); | |
118 | } | |
a1207466 CC |
119 | } |
120 | ||
121 | // Unlock any nested archives. | |
4973341a | 122 | |
a1207466 CC |
123 | void |
124 | Archive::unlock_nested_archives() | |
125 | { | |
126 | for (Nested_archive_table::iterator p = this->nested_archives_.begin(); | |
127 | p != this->nested_archives_.end(); | |
128 | ++p) | |
129 | { | |
130 | p->second->unlock(this->task_); | |
131 | } | |
4973341a | 132 | } |
61ba1cf9 | 133 | |
4973341a ILT |
134 | // Read the archive symbol map. |
135 | ||
136 | void | |
8383303e | 137 | Archive::read_armap(off_t start, section_size_type size) |
4973341a | 138 | { |
61ba1cf9 | 139 | // Read in the entire armap. |
9eb9fa57 | 140 | const unsigned char* p = this->get_view(start, size, false); |
61ba1cf9 ILT |
141 | |
142 | // Numbers in the armap are always big-endian. | |
143 | const elfcpp::Elf_Word* pword = reinterpret_cast<const elfcpp::Elf_Word*>(p); | |
f6ce93d6 | 144 | unsigned int nsyms = elfcpp::Swap<32, true>::readval(pword); |
61ba1cf9 ILT |
145 | ++pword; |
146 | ||
147 | // Note that the addition is in units of sizeof(elfcpp::Elf_Word). | |
148 | const char* pnames = reinterpret_cast<const char*>(pword + nsyms); | |
8383303e ILT |
149 | section_size_type names_size = |
150 | reinterpret_cast<const char*>(p) + size - pnames; | |
9eb9fa57 | 151 | this->armap_names_.assign(pnames, names_size); |
61ba1cf9 ILT |
152 | |
153 | this->armap_.resize(nsyms); | |
154 | ||
8383303e | 155 | section_offset_type name_offset = 0; |
61ba1cf9 ILT |
156 | for (unsigned int i = 0; i < nsyms; ++i) |
157 | { | |
9eb9fa57 ILT |
158 | this->armap_[i].name_offset = name_offset; |
159 | this->armap_[i].file_offset = elfcpp::Swap<32, true>::readval(pword); | |
160 | name_offset += strlen(pnames + name_offset) + 1; | |
61ba1cf9 ILT |
161 | ++pword; |
162 | } | |
163 | ||
8383303e | 164 | if (static_cast<section_size_type>(name_offset) > names_size) |
75f2446e ILT |
165 | gold_error(_("%s: bad archive symbol table names"), |
166 | this->name().c_str()); | |
a93d6d07 ILT |
167 | |
168 | // This array keeps track of which symbols are for archive elements | |
169 | // which we have already included in the link. | |
170 | this->armap_checked_.resize(nsyms); | |
61ba1cf9 ILT |
171 | } |
172 | ||
173 | // Read the header of an archive member at OFF. Fail if something | |
174 | // goes wrong. Return the size of the member. Set *PNAME to the name | |
175 | // of the member. | |
176 | ||
177 | off_t | |
a1207466 CC |
178 | Archive::read_header(off_t off, bool cache, std::string* pname, |
179 | off_t* nested_off) | |
61ba1cf9 | 180 | { |
cb295612 | 181 | const unsigned char* p = this->get_view(off, sizeof(Archive_header), cache); |
61ba1cf9 | 182 | const Archive_header* hdr = reinterpret_cast<const Archive_header*>(p); |
a1207466 | 183 | return this->interpret_header(hdr, off, pname, nested_off); |
4973341a | 184 | } |
61ba1cf9 | 185 | |
4973341a ILT |
186 | // Interpret the header of HDR, the header of the archive member at |
187 | // file offset OFF. Fail if something goes wrong. Return the size of | |
188 | // the member. Set *PNAME to the name of the member. | |
189 | ||
190 | off_t | |
191 | Archive::interpret_header(const Archive_header* hdr, off_t off, | |
a1207466 | 192 | std::string* pname, off_t* nested_off) |
4973341a | 193 | { |
61ba1cf9 ILT |
194 | if (memcmp(hdr->ar_fmag, arfmag, sizeof arfmag) != 0) |
195 | { | |
75f2446e ILT |
196 | gold_error(_("%s: malformed archive header at %zu"), |
197 | this->name().c_str(), static_cast<size_t>(off)); | |
198 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
199 | } |
200 | ||
201 | const int size_string_size = sizeof hdr->ar_size; | |
202 | char size_string[size_string_size + 1]; | |
203 | memcpy(size_string, hdr->ar_size, size_string_size); | |
204 | char* ps = size_string + size_string_size; | |
205 | while (ps[-1] == ' ') | |
206 | --ps; | |
207 | *ps = '\0'; | |
208 | ||
209 | errno = 0; | |
210 | char* end; | |
211 | off_t member_size = strtol(size_string, &end, 10); | |
212 | if (*end != '\0' | |
213 | || member_size < 0 | |
214 | || (member_size == LONG_MAX && errno == ERANGE)) | |
215 | { | |
75f2446e ILT |
216 | gold_error(_("%s: malformed archive header size at %zu"), |
217 | this->name().c_str(), static_cast<size_t>(off)); | |
218 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
219 | } |
220 | ||
221 | if (hdr->ar_name[0] != '/') | |
222 | { | |
223 | const char* name_end = strchr(hdr->ar_name, '/'); | |
224 | if (name_end == NULL | |
225 | || name_end - hdr->ar_name >= static_cast<int>(sizeof hdr->ar_name)) | |
226 | { | |
a0c4fb0a | 227 | gold_error(_("%s: malformed archive header name at %zu"), |
75f2446e ILT |
228 | this->name().c_str(), static_cast<size_t>(off)); |
229 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
230 | } |
231 | pname->assign(hdr->ar_name, name_end - hdr->ar_name); | |
a1207466 CC |
232 | if (nested_off != NULL) |
233 | *nested_off = 0; | |
61ba1cf9 ILT |
234 | } |
235 | else if (hdr->ar_name[1] == ' ') | |
236 | { | |
237 | // This is the symbol table. | |
238 | pname->clear(); | |
239 | } | |
240 | else if (hdr->ar_name[1] == '/') | |
241 | { | |
242 | // This is the extended name table. | |
243 | pname->assign(1, '/'); | |
244 | } | |
245 | else | |
246 | { | |
247 | errno = 0; | |
248 | long x = strtol(hdr->ar_name + 1, &end, 10); | |
a1207466 CC |
249 | long y = 0; |
250 | if (*end == ':') | |
251 | y = strtol(end + 1, &end, 10); | |
61ba1cf9 ILT |
252 | if (*end != ' ' |
253 | || x < 0 | |
254 | || (x == LONG_MAX && errno == ERANGE) | |
255 | || static_cast<size_t>(x) >= this->extended_names_.size()) | |
256 | { | |
75f2446e ILT |
257 | gold_error(_("%s: bad extended name index at %zu"), |
258 | this->name().c_str(), static_cast<size_t>(off)); | |
259 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
260 | } |
261 | ||
262 | const char* name = this->extended_names_.data() + x; | |
a1207466 | 263 | const char* name_end = strchr(name, '\n'); |
61ba1cf9 | 264 | if (static_cast<size_t>(name_end - name) > this->extended_names_.size() |
a1207466 | 265 | || name_end[-1] != '/') |
61ba1cf9 | 266 | { |
75f2446e ILT |
267 | gold_error(_("%s: bad extended name entry at header %zu"), |
268 | this->name().c_str(), static_cast<size_t>(off)); | |
269 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 | 270 | } |
a1207466 CC |
271 | pname->assign(name, name_end - 1 - name); |
272 | if (nested_off != NULL) | |
273 | *nested_off = y; | |
61ba1cf9 ILT |
274 | } |
275 | ||
276 | return member_size; | |
277 | } | |
278 | ||
279 | // Select members from the archive and add them to the link. We walk | |
280 | // through the elements in the archive map, and look each one up in | |
281 | // the symbol table. If it exists as a strong undefined symbol, we | |
282 | // pull in the corresponding element. We have to do this in a loop, | |
283 | // since pulling in one element may create new undefined symbols which | |
284 | // may be satisfied by other objects in the archive. | |
285 | ||
286 | void | |
7e1edb90 ILT |
287 | Archive::add_symbols(Symbol_table* symtab, Layout* layout, |
288 | Input_objects* input_objects) | |
61ba1cf9 | 289 | { |
45aa233b | 290 | if (this->input_file_->options().whole_archive()) |
7e1edb90 | 291 | return this->include_all_members(symtab, layout, input_objects); |
4973341a | 292 | |
ead1e424 | 293 | const size_t armap_size = this->armap_.size(); |
61ba1cf9 | 294 | |
e243ffc6 | 295 | // This is a quick optimization, since we usually see many symbols |
8c838dbd ILT |
296 | // in a row with the same offset. last_seen_offset holds the last |
297 | // offset we saw that was present in the seen_offsets_ set. | |
a93d6d07 ILT |
298 | off_t last_seen_offset = -1; |
299 | ||
300 | // Track which symbols in the symbol table we've already found to be | |
301 | // defined. | |
e243ffc6 | 302 | |
61ba1cf9 ILT |
303 | bool added_new_object; |
304 | do | |
305 | { | |
306 | added_new_object = false; | |
61ba1cf9 ILT |
307 | for (size_t i = 0; i < armap_size; ++i) |
308 | { | |
a93d6d07 ILT |
309 | if (this->armap_checked_[i]) |
310 | continue; | |
9eb9fa57 | 311 | if (this->armap_[i].file_offset == last_seen_offset) |
a93d6d07 ILT |
312 | { |
313 | this->armap_checked_[i] = true; | |
314 | continue; | |
315 | } | |
9eb9fa57 | 316 | if (this->seen_offsets_.find(this->armap_[i].file_offset) |
a93d6d07 | 317 | != this->seen_offsets_.end()) |
61ba1cf9 | 318 | { |
a93d6d07 | 319 | this->armap_checked_[i] = true; |
9eb9fa57 | 320 | last_seen_offset = this->armap_[i].file_offset; |
61ba1cf9 ILT |
321 | continue; |
322 | } | |
323 | ||
9eb9fa57 ILT |
324 | const char* sym_name = (this->armap_names_.data() |
325 | + this->armap_[i].name_offset); | |
326 | Symbol* sym = symtab->lookup(sym_name); | |
61ba1cf9 ILT |
327 | if (sym == NULL) |
328 | continue; | |
ead1e424 | 329 | else if (!sym->is_undefined()) |
61ba1cf9 | 330 | { |
a93d6d07 | 331 | this->armap_checked_[i] = true; |
61ba1cf9 ILT |
332 | continue; |
333 | } | |
334 | else if (sym->binding() == elfcpp::STB_WEAK) | |
335 | continue; | |
336 | ||
337 | // We want to include this object in the link. | |
9eb9fa57 | 338 | last_seen_offset = this->armap_[i].file_offset; |
a93d6d07 ILT |
339 | this->seen_offsets_.insert(last_seen_offset); |
340 | this->armap_checked_[i] = true; | |
7e1edb90 | 341 | this->include_member(symtab, layout, input_objects, |
a93d6d07 | 342 | last_seen_offset); |
61ba1cf9 ILT |
343 | added_new_object = true; |
344 | } | |
345 | } | |
346 | while (added_new_object); | |
347 | } | |
348 | ||
4973341a ILT |
349 | // Include all the archive members in the link. This is for --whole-archive. |
350 | ||
351 | void | |
7e1edb90 | 352 | Archive::include_all_members(Symbol_table* symtab, Layout* layout, |
4973341a ILT |
353 | Input_objects* input_objects) |
354 | { | |
355 | off_t off = sarmag; | |
82dcae9d | 356 | off_t filesize = this->input_file_->file().filesize(); |
4973341a ILT |
357 | while (true) |
358 | { | |
f5c3f225 | 359 | if (filesize - off < static_cast<off_t>(sizeof(Archive_header))) |
4973341a | 360 | { |
82dcae9d | 361 | if (filesize != off) |
75f2446e ILT |
362 | gold_error(_("%s: short archive header at %zu"), |
363 | this->name().c_str(), static_cast<size_t>(off)); | |
4973341a ILT |
364 | break; |
365 | } | |
366 | ||
82dcae9d ILT |
367 | unsigned char hdr_buf[sizeof(Archive_header)]; |
368 | this->input_file_->file().read(off, sizeof(Archive_header), hdr_buf); | |
369 | ||
bae3688d ILT |
370 | const Archive_header* hdr = |
371 | reinterpret_cast<const Archive_header*>(hdr_buf); | |
4973341a | 372 | std::string name; |
a1207466 | 373 | off_t size = this->interpret_header(hdr, off, &name, NULL); |
4973341a ILT |
374 | if (name.empty()) |
375 | { | |
376 | // Symbol table. | |
377 | } | |
378 | else if (name == "/") | |
379 | { | |
380 | // Extended name table. | |
381 | } | |
382 | else | |
7e1edb90 | 383 | this->include_member(symtab, layout, input_objects, off); |
4973341a | 384 | |
a1207466 CC |
385 | off += sizeof(Archive_header); |
386 | if (!this->is_thin_archive_) | |
387 | off += size; | |
4973341a ILT |
388 | if ((off & 1) != 0) |
389 | ++off; | |
390 | } | |
391 | } | |
392 | ||
61ba1cf9 ILT |
393 | // Include an archive member in the link. OFF is the file offset of |
394 | // the member header. | |
395 | ||
396 | void | |
7e1edb90 ILT |
397 | Archive::include_member(Symbol_table* symtab, Layout* layout, |
398 | Input_objects* input_objects, off_t off) | |
61ba1cf9 ILT |
399 | { |
400 | std::string n; | |
a1207466 CC |
401 | off_t nested_off; |
402 | this->read_header(off, false, &n, &nested_off); | |
61ba1cf9 | 403 | |
a1207466 CC |
404 | Input_file* input_file; |
405 | off_t memoff; | |
406 | ||
407 | if (!this->is_thin_archive_) | |
408 | { | |
409 | input_file = this->input_file_; | |
410 | memoff = off + static_cast<off_t>(sizeof(Archive_header)); | |
411 | } | |
412 | else | |
413 | { | |
414 | // Adjust a relative pathname so that it is relative | |
415 | // to the directory containing the archive. | |
416 | if (!IS_ABSOLUTE_PATH(n.c_str())) | |
417 | { | |
418 | const char *arch_path = this->name().c_str(); | |
419 | const char *basename = lbasename(arch_path); | |
420 | if (basename > arch_path) | |
421 | n.replace(0, 0, this->name().substr(0, basename - arch_path)); | |
422 | } | |
423 | if (nested_off > 0) | |
424 | { | |
425 | // This is a member of a nested archive. Open the containing | |
426 | // archive if we don't already have it open, then do a recursive | |
427 | // call to include the member from that archive. | |
428 | Archive* arch; | |
429 | Nested_archive_table::const_iterator p = | |
430 | this->nested_archives_.find(n); | |
431 | if (p != this->nested_archives_.end()) | |
432 | arch = p->second; | |
433 | else | |
434 | { | |
435 | Input_file_argument* input_file_arg = | |
436 | new Input_file_argument(n.c_str(), false, "", false, | |
437 | parameters->options()); | |
438 | input_file = new Input_file(input_file_arg); | |
439 | if (!input_file->open(parameters->options(), *this->dirpath_, | |
440 | this->task_)) | |
441 | return; | |
442 | arch = new Archive(n, input_file, false, this->dirpath_, | |
443 | this->task_); | |
444 | arch->setup(); | |
445 | std::pair<Nested_archive_table::iterator, bool> ins = | |
446 | this->nested_archives_.insert(std::make_pair(n, arch)); | |
447 | gold_assert(ins.second); | |
448 | } | |
449 | arch->include_member(symtab, layout, input_objects, nested_off); | |
450 | return; | |
451 | } | |
452 | // This is an external member of a thin archive. Open the | |
453 | // file as a regular relocatable object file. | |
454 | Input_file_argument* input_file_arg = | |
455 | new Input_file_argument(n.c_str(), false, "", false, | |
456 | this->input_file_->options()); | |
457 | input_file = new Input_file(input_file_arg); | |
458 | if (!input_file->open(parameters->options(), *this->dirpath_, | |
459 | this->task_)) | |
460 | { | |
461 | return; | |
462 | } | |
463 | memoff = 0; | |
464 | } | |
61ba1cf9 ILT |
465 | |
466 | // Read enough of the file to pick up the entire ELF header. | |
82dcae9d ILT |
467 | unsigned char ehdr_buf[elfcpp::Elf_sizes<64>::ehdr_size]; |
468 | ||
a1207466 | 469 | off_t filesize = input_file->file().filesize(); |
82dcae9d ILT |
470 | int read_size = elfcpp::Elf_sizes<64>::ehdr_size; |
471 | if (filesize - memoff < read_size) | |
472 | read_size = filesize - memoff; | |
473 | ||
474 | if (read_size < 4) | |
61ba1cf9 | 475 | { |
75f2446e ILT |
476 | gold_error(_("%s: member at %zu is not an ELF object"), |
477 | this->name().c_str(), static_cast<size_t>(off)); | |
478 | return; | |
61ba1cf9 ILT |
479 | } |
480 | ||
a1207466 | 481 | input_file->file().read(memoff, read_size, ehdr_buf); |
82dcae9d | 482 | |
61ba1cf9 ILT |
483 | static unsigned char elfmagic[4] = |
484 | { | |
485 | elfcpp::ELFMAG0, elfcpp::ELFMAG1, | |
486 | elfcpp::ELFMAG2, elfcpp::ELFMAG3 | |
487 | }; | |
bae3688d | 488 | if (memcmp(ehdr_buf, elfmagic, 4) != 0) |
61ba1cf9 | 489 | { |
75f2446e ILT |
490 | gold_error(_("%s: member at %zu is not an ELF object"), |
491 | this->name().c_str(), static_cast<size_t>(off)); | |
492 | return; | |
61ba1cf9 ILT |
493 | } |
494 | ||
92e059d8 | 495 | Object* obj = make_elf_object((std::string(this->input_file_->filename()) |
61ba1cf9 | 496 | + "(" + n + ")"), |
a1207466 | 497 | input_file, memoff, ehdr_buf, |
82dcae9d | 498 | read_size); |
61ba1cf9 | 499 | |
019cdb1a ILT |
500 | if (input_objects->add_object(obj)) |
501 | { | |
502 | Read_symbols_data sd; | |
503 | obj->read_symbols(&sd); | |
504 | obj->layout(symtab, layout, &sd); | |
505 | obj->add_symbols(symtab, &sd); | |
506 | } | |
507 | else | |
508 | { | |
509 | // FIXME: We need to close the descriptor here. | |
510 | delete obj; | |
511 | } | |
61ba1cf9 | 512 | |
a1207466 CC |
513 | if (this->is_thin_archive_) |
514 | { | |
515 | // Opening the file locked it. Unlock it now. | |
516 | input_file->file().unlock(this->task_); | |
517 | } | |
61ba1cf9 ILT |
518 | } |
519 | ||
520 | // Add_archive_symbols methods. | |
521 | ||
522 | Add_archive_symbols::~Add_archive_symbols() | |
523 | { | |
524 | if (this->this_blocker_ != NULL) | |
525 | delete this->this_blocker_; | |
526 | // next_blocker_ is deleted by the task associated with the next | |
527 | // input file. | |
528 | } | |
529 | ||
530 | // Return whether we can add the archive symbols. We are blocked by | |
531 | // this_blocker_. We block next_blocker_. We also lock the file. | |
532 | ||
17a1d0a9 ILT |
533 | Task_token* |
534 | Add_archive_symbols::is_runnable() | |
61ba1cf9 ILT |
535 | { |
536 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
17a1d0a9 ILT |
537 | return this->this_blocker_; |
538 | return NULL; | |
61ba1cf9 ILT |
539 | } |
540 | ||
17a1d0a9 ILT |
541 | void |
542 | Add_archive_symbols::locks(Task_locker* tl) | |
61ba1cf9 | 543 | { |
17a1d0a9 ILT |
544 | tl->add(this, this->next_blocker_); |
545 | tl->add(this, this->archive_->token()); | |
61ba1cf9 ILT |
546 | } |
547 | ||
548 | void | |
549 | Add_archive_symbols::run(Workqueue*) | |
550 | { | |
7e1edb90 ILT |
551 | this->archive_->add_symbols(this->symtab_, this->layout_, |
552 | this->input_objects_); | |
ead1e424 | 553 | |
a1207466 CC |
554 | this->archive_->unlock_nested_archives(); |
555 | ||
17a1d0a9 ILT |
556 | this->archive_->release(); |
557 | ||
ead1e424 ILT |
558 | if (this->input_group_ != NULL) |
559 | this->input_group_->add_archive(this->archive_); | |
560 | else | |
561 | { | |
562 | // We no longer need to know about this archive. | |
563 | delete this->archive_; | |
c7912668 | 564 | this->archive_ = NULL; |
ead1e424 | 565 | } |
61ba1cf9 ILT |
566 | } |
567 | ||
568 | } // End namespace gold. |