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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), | |
39d0cb0e | 115 | extended_size, false, 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. |
39d0cb0e | 140 | const unsigned char* p = this->get_view(start, size, true, 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 | { |
39d0cb0e ILT |
181 | const unsigned char* p = this->get_view(off, sizeof(Archive_header), true, |
182 | cache); | |
61ba1cf9 | 183 | const Archive_header* hdr = reinterpret_cast<const Archive_header*>(p); |
a1207466 | 184 | return this->interpret_header(hdr, off, pname, nested_off); |
4973341a | 185 | } |
61ba1cf9 | 186 | |
4973341a ILT |
187 | // Interpret the header of HDR, the header of the archive member at |
188 | // file offset OFF. Fail if something goes wrong. Return the size of | |
189 | // the member. Set *PNAME to the name of the member. | |
190 | ||
191 | off_t | |
192 | Archive::interpret_header(const Archive_header* hdr, off_t off, | |
a1207466 | 193 | std::string* pname, off_t* nested_off) |
4973341a | 194 | { |
61ba1cf9 ILT |
195 | if (memcmp(hdr->ar_fmag, arfmag, sizeof arfmag) != 0) |
196 | { | |
75f2446e ILT |
197 | gold_error(_("%s: malformed archive header at %zu"), |
198 | this->name().c_str(), static_cast<size_t>(off)); | |
199 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
200 | } |
201 | ||
202 | const int size_string_size = sizeof hdr->ar_size; | |
203 | char size_string[size_string_size + 1]; | |
204 | memcpy(size_string, hdr->ar_size, size_string_size); | |
205 | char* ps = size_string + size_string_size; | |
206 | while (ps[-1] == ' ') | |
207 | --ps; | |
208 | *ps = '\0'; | |
209 | ||
210 | errno = 0; | |
211 | char* end; | |
212 | off_t member_size = strtol(size_string, &end, 10); | |
213 | if (*end != '\0' | |
214 | || member_size < 0 | |
215 | || (member_size == LONG_MAX && errno == ERANGE)) | |
216 | { | |
75f2446e ILT |
217 | gold_error(_("%s: malformed archive header size at %zu"), |
218 | this->name().c_str(), static_cast<size_t>(off)); | |
219 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
220 | } |
221 | ||
222 | if (hdr->ar_name[0] != '/') | |
223 | { | |
224 | const char* name_end = strchr(hdr->ar_name, '/'); | |
225 | if (name_end == NULL | |
226 | || name_end - hdr->ar_name >= static_cast<int>(sizeof hdr->ar_name)) | |
227 | { | |
a0c4fb0a | 228 | gold_error(_("%s: malformed archive header name at %zu"), |
75f2446e ILT |
229 | this->name().c_str(), static_cast<size_t>(off)); |
230 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
231 | } |
232 | pname->assign(hdr->ar_name, name_end - hdr->ar_name); | |
a1207466 CC |
233 | if (nested_off != NULL) |
234 | *nested_off = 0; | |
61ba1cf9 ILT |
235 | } |
236 | else if (hdr->ar_name[1] == ' ') | |
237 | { | |
238 | // This is the symbol table. | |
239 | pname->clear(); | |
240 | } | |
241 | else if (hdr->ar_name[1] == '/') | |
242 | { | |
243 | // This is the extended name table. | |
244 | pname->assign(1, '/'); | |
245 | } | |
246 | else | |
247 | { | |
248 | errno = 0; | |
249 | long x = strtol(hdr->ar_name + 1, &end, 10); | |
a1207466 CC |
250 | long y = 0; |
251 | if (*end == ':') | |
252 | y = strtol(end + 1, &end, 10); | |
61ba1cf9 ILT |
253 | if (*end != ' ' |
254 | || x < 0 | |
255 | || (x == LONG_MAX && errno == ERANGE) | |
256 | || static_cast<size_t>(x) >= this->extended_names_.size()) | |
257 | { | |
75f2446e ILT |
258 | gold_error(_("%s: bad extended name index at %zu"), |
259 | this->name().c_str(), static_cast<size_t>(off)); | |
260 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 ILT |
261 | } |
262 | ||
263 | const char* name = this->extended_names_.data() + x; | |
a1207466 | 264 | const char* name_end = strchr(name, '\n'); |
61ba1cf9 | 265 | if (static_cast<size_t>(name_end - name) > this->extended_names_.size() |
a1207466 | 266 | || name_end[-1] != '/') |
61ba1cf9 | 267 | { |
75f2446e ILT |
268 | gold_error(_("%s: bad extended name entry at header %zu"), |
269 | this->name().c_str(), static_cast<size_t>(off)); | |
270 | return this->input_file_->file().filesize() - off; | |
61ba1cf9 | 271 | } |
a1207466 CC |
272 | pname->assign(name, name_end - 1 - name); |
273 | if (nested_off != NULL) | |
274 | *nested_off = y; | |
61ba1cf9 ILT |
275 | } |
276 | ||
277 | return member_size; | |
278 | } | |
279 | ||
280 | // Select members from the archive and add them to the link. We walk | |
281 | // through the elements in the archive map, and look each one up in | |
282 | // the symbol table. If it exists as a strong undefined symbol, we | |
283 | // pull in the corresponding element. We have to do this in a loop, | |
284 | // since pulling in one element may create new undefined symbols which | |
285 | // may be satisfied by other objects in the archive. | |
286 | ||
287 | void | |
7e1edb90 ILT |
288 | Archive::add_symbols(Symbol_table* symtab, Layout* layout, |
289 | Input_objects* input_objects) | |
61ba1cf9 | 290 | { |
45aa233b | 291 | if (this->input_file_->options().whole_archive()) |
7e1edb90 | 292 | return this->include_all_members(symtab, layout, input_objects); |
4973341a | 293 | |
ead1e424 | 294 | const size_t armap_size = this->armap_.size(); |
61ba1cf9 | 295 | |
e243ffc6 | 296 | // This is a quick optimization, since we usually see many symbols |
8c838dbd ILT |
297 | // in a row with the same offset. last_seen_offset holds the last |
298 | // offset we saw that was present in the seen_offsets_ set. | |
a93d6d07 ILT |
299 | off_t last_seen_offset = -1; |
300 | ||
301 | // Track which symbols in the symbol table we've already found to be | |
302 | // defined. | |
e243ffc6 | 303 | |
61ba1cf9 ILT |
304 | bool added_new_object; |
305 | do | |
306 | { | |
307 | added_new_object = false; | |
61ba1cf9 ILT |
308 | for (size_t i = 0; i < armap_size; ++i) |
309 | { | |
a93d6d07 ILT |
310 | if (this->armap_checked_[i]) |
311 | continue; | |
9eb9fa57 | 312 | if (this->armap_[i].file_offset == last_seen_offset) |
a93d6d07 ILT |
313 | { |
314 | this->armap_checked_[i] = true; | |
315 | continue; | |
316 | } | |
9eb9fa57 | 317 | if (this->seen_offsets_.find(this->armap_[i].file_offset) |
a93d6d07 | 318 | != this->seen_offsets_.end()) |
61ba1cf9 | 319 | { |
a93d6d07 | 320 | this->armap_checked_[i] = true; |
9eb9fa57 | 321 | last_seen_offset = this->armap_[i].file_offset; |
61ba1cf9 ILT |
322 | continue; |
323 | } | |
324 | ||
9eb9fa57 ILT |
325 | const char* sym_name = (this->armap_names_.data() |
326 | + this->armap_[i].name_offset); | |
327 | Symbol* sym = symtab->lookup(sym_name); | |
61ba1cf9 | 328 | if (sym == NULL) |
f3e9c5c5 ILT |
329 | { |
330 | // Check whether the symbol was named in a -u option. | |
331 | if (!parameters->options().is_undefined(sym_name)) | |
332 | continue; | |
333 | } | |
ead1e424 | 334 | else if (!sym->is_undefined()) |
61ba1cf9 | 335 | { |
a93d6d07 | 336 | this->armap_checked_[i] = true; |
61ba1cf9 ILT |
337 | continue; |
338 | } | |
339 | else if (sym->binding() == elfcpp::STB_WEAK) | |
340 | continue; | |
341 | ||
342 | // We want to include this object in the link. | |
9eb9fa57 | 343 | last_seen_offset = this->armap_[i].file_offset; |
a93d6d07 ILT |
344 | this->seen_offsets_.insert(last_seen_offset); |
345 | this->armap_checked_[i] = true; | |
7e1edb90 | 346 | this->include_member(symtab, layout, input_objects, |
a93d6d07 | 347 | last_seen_offset); |
61ba1cf9 ILT |
348 | added_new_object = true; |
349 | } | |
350 | } | |
351 | while (added_new_object); | |
352 | } | |
353 | ||
4973341a ILT |
354 | // Include all the archive members in the link. This is for --whole-archive. |
355 | ||
356 | void | |
7e1edb90 | 357 | Archive::include_all_members(Symbol_table* symtab, Layout* layout, |
4973341a ILT |
358 | Input_objects* input_objects) |
359 | { | |
360 | off_t off = sarmag; | |
82dcae9d | 361 | off_t filesize = this->input_file_->file().filesize(); |
4973341a ILT |
362 | while (true) |
363 | { | |
f5c3f225 | 364 | if (filesize - off < static_cast<off_t>(sizeof(Archive_header))) |
4973341a | 365 | { |
82dcae9d | 366 | if (filesize != off) |
75f2446e ILT |
367 | gold_error(_("%s: short archive header at %zu"), |
368 | this->name().c_str(), static_cast<size_t>(off)); | |
4973341a ILT |
369 | break; |
370 | } | |
371 | ||
82dcae9d ILT |
372 | unsigned char hdr_buf[sizeof(Archive_header)]; |
373 | this->input_file_->file().read(off, sizeof(Archive_header), hdr_buf); | |
374 | ||
bae3688d ILT |
375 | const Archive_header* hdr = |
376 | reinterpret_cast<const Archive_header*>(hdr_buf); | |
4973341a | 377 | std::string name; |
a1207466 | 378 | off_t size = this->interpret_header(hdr, off, &name, NULL); |
4973341a ILT |
379 | if (name.empty()) |
380 | { | |
381 | // Symbol table. | |
382 | } | |
383 | else if (name == "/") | |
384 | { | |
385 | // Extended name table. | |
386 | } | |
387 | else | |
7e1edb90 | 388 | this->include_member(symtab, layout, input_objects, off); |
4973341a | 389 | |
a1207466 CC |
390 | off += sizeof(Archive_header); |
391 | if (!this->is_thin_archive_) | |
392 | off += size; | |
4973341a ILT |
393 | if ((off & 1) != 0) |
394 | ++off; | |
395 | } | |
396 | } | |
397 | ||
61ba1cf9 ILT |
398 | // Include an archive member in the link. OFF is the file offset of |
399 | // the member header. | |
400 | ||
401 | void | |
7e1edb90 ILT |
402 | Archive::include_member(Symbol_table* symtab, Layout* layout, |
403 | Input_objects* input_objects, off_t off) | |
61ba1cf9 ILT |
404 | { |
405 | std::string n; | |
a1207466 CC |
406 | off_t nested_off; |
407 | this->read_header(off, false, &n, &nested_off); | |
61ba1cf9 | 408 | |
a1207466 CC |
409 | Input_file* input_file; |
410 | off_t memoff; | |
411 | ||
412 | if (!this->is_thin_archive_) | |
413 | { | |
414 | input_file = this->input_file_; | |
415 | memoff = off + static_cast<off_t>(sizeof(Archive_header)); | |
416 | } | |
417 | else | |
418 | { | |
419 | // Adjust a relative pathname so that it is relative | |
420 | // to the directory containing the archive. | |
421 | if (!IS_ABSOLUTE_PATH(n.c_str())) | |
422 | { | |
423 | const char *arch_path = this->name().c_str(); | |
424 | const char *basename = lbasename(arch_path); | |
425 | if (basename > arch_path) | |
426 | n.replace(0, 0, this->name().substr(0, basename - arch_path)); | |
427 | } | |
428 | if (nested_off > 0) | |
429 | { | |
430 | // This is a member of a nested archive. Open the containing | |
431 | // archive if we don't already have it open, then do a recursive | |
432 | // call to include the member from that archive. | |
433 | Archive* arch; | |
434 | Nested_archive_table::const_iterator p = | |
435 | this->nested_archives_.find(n); | |
436 | if (p != this->nested_archives_.end()) | |
437 | arch = p->second; | |
438 | else | |
439 | { | |
440 | Input_file_argument* input_file_arg = | |
441 | new Input_file_argument(n.c_str(), false, "", false, | |
442 | parameters->options()); | |
443 | input_file = new Input_file(input_file_arg); | |
444 | if (!input_file->open(parameters->options(), *this->dirpath_, | |
445 | this->task_)) | |
446 | return; | |
447 | arch = new Archive(n, input_file, false, this->dirpath_, | |
448 | this->task_); | |
449 | arch->setup(); | |
450 | std::pair<Nested_archive_table::iterator, bool> ins = | |
451 | this->nested_archives_.insert(std::make_pair(n, arch)); | |
452 | gold_assert(ins.second); | |
453 | } | |
454 | arch->include_member(symtab, layout, input_objects, nested_off); | |
455 | return; | |
456 | } | |
457 | // This is an external member of a thin archive. Open the | |
458 | // file as a regular relocatable object file. | |
459 | Input_file_argument* input_file_arg = | |
460 | new Input_file_argument(n.c_str(), false, "", false, | |
461 | this->input_file_->options()); | |
462 | input_file = new Input_file(input_file_arg); | |
463 | if (!input_file->open(parameters->options(), *this->dirpath_, | |
464 | this->task_)) | |
465 | { | |
466 | return; | |
467 | } | |
468 | memoff = 0; | |
469 | } | |
61ba1cf9 | 470 | |
a1207466 | 471 | off_t filesize = input_file->file().filesize(); |
82dcae9d ILT |
472 | int read_size = elfcpp::Elf_sizes<64>::ehdr_size; |
473 | if (filesize - memoff < read_size) | |
474 | read_size = filesize - memoff; | |
475 | ||
476 | if (read_size < 4) | |
61ba1cf9 | 477 | { |
75f2446e ILT |
478 | gold_error(_("%s: member at %zu is not an ELF object"), |
479 | this->name().c_str(), static_cast<size_t>(off)); | |
480 | return; | |
61ba1cf9 ILT |
481 | } |
482 | ||
7ef73768 ILT |
483 | const unsigned char* ehdr = input_file->file().get_view(memoff, 0, read_size, |
484 | true, false); | |
82dcae9d | 485 | |
61ba1cf9 ILT |
486 | static unsigned char elfmagic[4] = |
487 | { | |
488 | elfcpp::ELFMAG0, elfcpp::ELFMAG1, | |
489 | elfcpp::ELFMAG2, elfcpp::ELFMAG3 | |
490 | }; | |
7ef73768 | 491 | if (memcmp(ehdr, elfmagic, 4) != 0) |
61ba1cf9 | 492 | { |
75f2446e ILT |
493 | gold_error(_("%s: member at %zu is not an ELF object"), |
494 | this->name().c_str(), static_cast<size_t>(off)); | |
495 | return; | |
61ba1cf9 ILT |
496 | } |
497 | ||
92e059d8 | 498 | Object* obj = make_elf_object((std::string(this->input_file_->filename()) |
61ba1cf9 | 499 | + "(" + n + ")"), |
7ef73768 | 500 | input_file, memoff, ehdr, read_size); |
61ba1cf9 | 501 | |
019cdb1a ILT |
502 | if (input_objects->add_object(obj)) |
503 | { | |
504 | Read_symbols_data sd; | |
505 | obj->read_symbols(&sd); | |
506 | obj->layout(symtab, layout, &sd); | |
507 | obj->add_symbols(symtab, &sd); | |
508 | } | |
509 | else | |
510 | { | |
511 | // FIXME: We need to close the descriptor here. | |
512 | delete obj; | |
513 | } | |
61ba1cf9 | 514 | |
a1207466 CC |
515 | if (this->is_thin_archive_) |
516 | { | |
517 | // Opening the file locked it. Unlock it now. | |
518 | input_file->file().unlock(this->task_); | |
519 | } | |
61ba1cf9 ILT |
520 | } |
521 | ||
522 | // Add_archive_symbols methods. | |
523 | ||
524 | Add_archive_symbols::~Add_archive_symbols() | |
525 | { | |
526 | if (this->this_blocker_ != NULL) | |
527 | delete this->this_blocker_; | |
528 | // next_blocker_ is deleted by the task associated with the next | |
529 | // input file. | |
530 | } | |
531 | ||
532 | // Return whether we can add the archive symbols. We are blocked by | |
533 | // this_blocker_. We block next_blocker_. We also lock the file. | |
534 | ||
17a1d0a9 ILT |
535 | Task_token* |
536 | Add_archive_symbols::is_runnable() | |
61ba1cf9 ILT |
537 | { |
538 | if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked()) | |
17a1d0a9 ILT |
539 | return this->this_blocker_; |
540 | return NULL; | |
61ba1cf9 ILT |
541 | } |
542 | ||
17a1d0a9 ILT |
543 | void |
544 | Add_archive_symbols::locks(Task_locker* tl) | |
61ba1cf9 | 545 | { |
17a1d0a9 ILT |
546 | tl->add(this, this->next_blocker_); |
547 | tl->add(this, this->archive_->token()); | |
61ba1cf9 ILT |
548 | } |
549 | ||
550 | void | |
551 | Add_archive_symbols::run(Workqueue*) | |
552 | { | |
7e1edb90 ILT |
553 | this->archive_->add_symbols(this->symtab_, this->layout_, |
554 | this->input_objects_); | |
ead1e424 | 555 | |
a1207466 CC |
556 | this->archive_->unlock_nested_archives(); |
557 | ||
17a1d0a9 | 558 | this->archive_->release(); |
39d0cb0e | 559 | this->archive_->clear_uncached_views(); |
17a1d0a9 | 560 | |
ead1e424 ILT |
561 | if (this->input_group_ != NULL) |
562 | this->input_group_->add_archive(this->archive_); | |
563 | else | |
564 | { | |
565 | // We no longer need to know about this archive. | |
566 | delete this->archive_; | |
c7912668 | 567 | this->archive_ = NULL; |
ead1e424 | 568 | } |
61ba1cf9 ILT |
569 | } |
570 | ||
571 | } // End namespace gold. |