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75f2446e ILT |
1 | // errors.cc -- handle errors for gold |
2 | ||
2571583a | 3 | // Copyright (C) 2006-2017 Free Software Foundation, Inc. |
75f2446e 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 | ||
23 | #include "gold.h" | |
24 | ||
25 | #include <cstdarg> | |
26 | #include <cstdio> | |
27 | ||
28 | #include "gold-threads.h" | |
29 | #include "parameters.h" | |
30 | #include "object.h" | |
31 | #include "symtab.h" | |
32 | #include "errors.h" | |
33 | ||
34 | namespace gold | |
35 | { | |
36 | ||
37 | // Class Errors. | |
38 | ||
39 | const int Errors::max_undefined_error_report; | |
40 | ||
2ea97941 ILT |
41 | Errors::Errors(const char* program_name) |
42 | : program_name_(program_name), lock_(NULL), initialize_lock_(&this->lock_), | |
7f055c20 | 43 | error_count_(0), warning_count_(0), undefined_symbols_() |
75f2446e ILT |
44 | { |
45 | } | |
46 | ||
2dd3e587 ILT |
47 | // Initialize the lock_ field. If we have not yet processed the |
48 | // parameters, then we can't initialize, since we don't yet know | |
49 | // whether we are using threads. That is OK, since if we haven't | |
50 | // processed the parameters, we haven't created any threads, and we | |
51 | // don't need a lock. Return true if the lock is now initialized. | |
c7912668 | 52 | |
2dd3e587 | 53 | bool |
c7912668 ILT |
54 | Errors::initialize_lock() |
55 | { | |
7f055c20 | 56 | return this->initialize_lock_.initialize(); |
2dd3e587 ILT |
57 | } |
58 | ||
59 | // Increment a counter, holding the lock if available. | |
60 | ||
61 | void | |
62 | Errors::increment_counter(int *counter) | |
63 | { | |
64 | if (!this->initialize_lock()) | |
65 | { | |
66 | // The lock does not exist, which means that we don't need it. | |
67 | ++*counter; | |
68 | } | |
69 | else | |
70 | { | |
71 | Hold_lock h(*this->lock_); | |
72 | ++*counter; | |
73 | } | |
c7912668 ILT |
74 | } |
75 | ||
75f2446e ILT |
76 | // Report a fatal error. |
77 | ||
78 | void | |
79 | Errors::fatal(const char* format, va_list args) | |
80 | { | |
f073bbf7 | 81 | fprintf(stderr, _("%s: fatal error: "), this->program_name_); |
75f2446e ILT |
82 | vfprintf(stderr, format, args); |
83 | fputc('\n', stderr); | |
e6455dfb CC |
84 | gold_exit(GOLD_ERR); |
85 | } | |
86 | ||
87 | // Report a fallback error. | |
88 | ||
89 | void | |
90 | Errors::fallback(const char* format, va_list args) | |
91 | { | |
92 | fprintf(stderr, _("%s: fatal error: "), this->program_name_); | |
93 | vfprintf(stderr, format, args); | |
94 | fputc('\n', stderr); | |
95 | gold_exit(GOLD_FALLBACK); | |
75f2446e ILT |
96 | } |
97 | ||
98 | // Report an error. | |
99 | ||
100 | void | |
101 | Errors::error(const char* format, va_list args) | |
102 | { | |
f073bbf7 | 103 | fprintf(stderr, _("%s: error: "), this->program_name_); |
75f2446e ILT |
104 | vfprintf(stderr, format, args); |
105 | fputc('\n', stderr); | |
c7912668 | 106 | |
2dd3e587 | 107 | this->increment_counter(&this->error_count_); |
75f2446e ILT |
108 | } |
109 | ||
110 | // Report a warning. | |
111 | ||
112 | void | |
113 | Errors::warning(const char* format, va_list args) | |
114 | { | |
115 | fprintf(stderr, _("%s: warning: "), this->program_name_); | |
116 | vfprintf(stderr, format, args); | |
117 | fputc('\n', stderr); | |
c7912668 | 118 | |
2dd3e587 | 119 | this->increment_counter(&this->warning_count_); |
75f2446e ILT |
120 | } |
121 | ||
c5818ff1 CC |
122 | // Print an informational message. |
123 | ||
124 | void | |
125 | Errors::info(const char* format, va_list args) | |
126 | { | |
127 | vfprintf(stderr, format, args); | |
128 | fputc('\n', stderr); | |
129 | } | |
130 | ||
75f2446e ILT |
131 | // Report an error at a reloc location. |
132 | ||
133 | template<int size, bool big_endian> | |
134 | void | |
135 | Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo, | |
136 | size_t relnum, off_t reloffset, | |
137 | const char* format, va_list args) | |
138 | { | |
308ecdc7 | 139 | fprintf(stderr, _("%s: error: "), |
75f2446e ILT |
140 | relinfo->location(relnum, reloffset).c_str()); |
141 | vfprintf(stderr, format, args); | |
142 | fputc('\n', stderr); | |
c7912668 | 143 | |
2dd3e587 | 144 | this->increment_counter(&this->error_count_); |
75f2446e ILT |
145 | } |
146 | ||
147 | // Report a warning at a reloc location. | |
148 | ||
149 | template<int size, bool big_endian> | |
150 | void | |
151 | Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo, | |
152 | size_t relnum, off_t reloffset, | |
153 | const char* format, va_list args) | |
154 | { | |
308ecdc7 | 155 | fprintf(stderr, _("%s: warning: "), |
75f2446e ILT |
156 | relinfo->location(relnum, reloffset).c_str()); |
157 | vfprintf(stderr, format, args); | |
158 | fputc('\n', stderr); | |
c7912668 | 159 | |
2dd3e587 | 160 | this->increment_counter(&this->warning_count_); |
75f2446e ILT |
161 | } |
162 | ||
f073bbf7 | 163 | // Issue an undefined symbol error with a caller-supplied location string. |
75f2446e | 164 | |
75f2446e | 165 | void |
f073bbf7 | 166 | Errors::undefined_symbol(const Symbol* sym, const std::string& location) |
75f2446e | 167 | { |
2dd3e587 ILT |
168 | bool initialized = this->initialize_lock(); |
169 | gold_assert(initialized); | |
dc3f80fe ILT |
170 | |
171 | const char* zmsg; | |
75f2446e | 172 | { |
c7912668 | 173 | Hold_lock h(*this->lock_); |
75f2446e ILT |
174 | if (++this->undefined_symbols_[sym] >= max_undefined_error_report) |
175 | return; | |
dc3f80fe ILT |
176 | if (parameters->options().warn_unresolved_symbols()) |
177 | { | |
178 | ++this->warning_count_; | |
179 | zmsg = _("warning"); | |
180 | } | |
181 | else | |
182 | { | |
183 | ++this->error_count_; | |
184 | zmsg = _("error"); | |
185 | } | |
75f2446e | 186 | } |
dc3f80fe | 187 | |
789aa6de ILT |
188 | const char* const version = sym->version(); |
189 | if (version == NULL) | |
308ecdc7 ILT |
190 | fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"), |
191 | location.c_str(), zmsg, sym->demangled_name().c_str()); | |
789aa6de | 192 | else |
f073bbf7 | 193 | fprintf(stderr, |
308ecdc7 ILT |
194 | _("%s: %s: undefined reference to '%s', version '%s'\n"), |
195 | location.c_str(), zmsg, sym->demangled_name().c_str(), version); | |
1a221d3d CC |
196 | |
197 | if (sym->is_cxx_vtable()) | |
198 | gold_info(_("%s: the vtable symbol may be undefined because " | |
199 | "the class is missing its key function"), | |
200 | program_name); | |
648c5cbb CC |
201 | if (sym->is_placeholder()) |
202 | gold_info(_("%s: the symbol should have been defined by a plugin"), | |
203 | program_name); | |
75f2446e ILT |
204 | } |
205 | ||
c7912668 ILT |
206 | // Issue a debugging message. |
207 | ||
208 | void | |
209 | Errors::debug(const char* format, ...) | |
210 | { | |
211 | fprintf(stderr, _("%s: "), this->program_name_); | |
212 | ||
213 | va_list args; | |
214 | va_start(args, format); | |
215 | vfprintf(stderr, format, args); | |
216 | va_end(args); | |
217 | ||
218 | fputc('\n', stderr); | |
219 | } | |
75f2446e ILT |
220 | |
221 | // The functions which the rest of the code actually calls. | |
222 | ||
223 | // Report a fatal error. | |
224 | ||
225 | void | |
226 | gold_fatal(const char* format, ...) | |
227 | { | |
228 | va_list args; | |
229 | va_start(args, format); | |
230 | parameters->errors()->fatal(format, args); | |
231 | va_end(args); | |
232 | } | |
233 | ||
e6455dfb CC |
234 | // Report a fallback error. |
235 | ||
236 | void | |
237 | gold_fallback(const char* format, ...) | |
238 | { | |
239 | va_list args; | |
240 | va_start(args, format); | |
241 | parameters->errors()->fallback(format, args); | |
242 | va_end(args); | |
243 | } | |
244 | ||
75f2446e ILT |
245 | // Report an error. |
246 | ||
247 | void | |
248 | gold_error(const char* format, ...) | |
249 | { | |
250 | va_list args; | |
251 | va_start(args, format); | |
252 | parameters->errors()->error(format, args); | |
253 | va_end(args); | |
254 | } | |
255 | ||
256 | // Report a warning. | |
257 | ||
258 | void | |
259 | gold_warning(const char* format, ...) | |
260 | { | |
261 | va_list args; | |
262 | va_start(args, format); | |
263 | parameters->errors()->warning(format, args); | |
264 | va_end(args); | |
265 | } | |
266 | ||
c5818ff1 CC |
267 | // Print an informational message. |
268 | ||
269 | void | |
270 | gold_info(const char* format, ...) | |
271 | { | |
272 | va_list args; | |
273 | va_start(args, format); | |
274 | parameters->errors()->info(format, args); | |
275 | va_end(args); | |
276 | } | |
277 | ||
75f2446e ILT |
278 | // Report an error at a location. |
279 | ||
280 | template<int size, bool big_endian> | |
281 | void | |
282 | gold_error_at_location(const Relocate_info<size, big_endian>* relinfo, | |
283 | size_t relnum, off_t reloffset, | |
284 | const char* format, ...) | |
285 | { | |
286 | va_list args; | |
287 | va_start(args, format); | |
288 | parameters->errors()->error_at_location(relinfo, relnum, reloffset, | |
289 | format, args); | |
290 | va_end(args); | |
291 | } | |
292 | ||
293 | // Report a warning at a location. | |
294 | ||
295 | template<int size, bool big_endian> | |
296 | void | |
297 | gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo, | |
298 | size_t relnum, off_t reloffset, | |
299 | const char* format, ...) | |
300 | { | |
301 | va_list args; | |
302 | va_start(args, format); | |
303 | parameters->errors()->warning_at_location(relinfo, relnum, reloffset, | |
304 | format, args); | |
305 | va_end(args); | |
306 | } | |
307 | ||
308 | // Report an undefined symbol. | |
309 | ||
f073bbf7 CD |
310 | void |
311 | gold_undefined_symbol(const Symbol* sym) | |
312 | { | |
313 | parameters->errors()->undefined_symbol(sym, sym->object()->name().c_str()); | |
314 | } | |
315 | ||
316 | // Report an undefined symbol at a reloc location | |
317 | ||
75f2446e ILT |
318 | template<int size, bool big_endian> |
319 | void | |
f073bbf7 | 320 | gold_undefined_symbol_at_location(const Symbol* sym, |
75f2446e ILT |
321 | const Relocate_info<size, big_endian>* relinfo, |
322 | size_t relnum, off_t reloffset) | |
323 | { | |
f073bbf7 CD |
324 | parameters->errors()->undefined_symbol(sym, |
325 | relinfo->location(relnum, reloffset)); | |
75f2446e ILT |
326 | } |
327 | ||
328 | #ifdef HAVE_TARGET_32_LITTLE | |
329 | template | |
330 | void | |
331 | gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo, | |
332 | size_t relnum, off_t reloffset, | |
333 | const char* format, ...); | |
334 | #endif | |
335 | ||
336 | #ifdef HAVE_TARGET_32_BIG | |
337 | template | |
338 | void | |
339 | gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo, | |
340 | size_t relnum, off_t reloffset, | |
341 | const char* format, ...); | |
342 | #endif | |
343 | ||
344 | #ifdef HAVE_TARGET_64_LITTLE | |
345 | template | |
346 | void | |
347 | gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo, | |
348 | size_t relnum, off_t reloffset, | |
349 | const char* format, ...); | |
350 | #endif | |
351 | ||
352 | #ifdef HAVE_TARGET_64_BIG | |
353 | template | |
354 | void | |
355 | gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo, | |
356 | size_t relnum, off_t reloffset, | |
357 | const char* format, ...); | |
358 | #endif | |
359 | ||
360 | #ifdef HAVE_TARGET_32_LITTLE | |
361 | template | |
362 | void | |
363 | gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo, | |
364 | size_t relnum, off_t reloffset, | |
365 | const char* format, ...); | |
366 | #endif | |
367 | ||
368 | #ifdef HAVE_TARGET_32_BIG | |
369 | template | |
370 | void | |
371 | gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo, | |
372 | size_t relnum, off_t reloffset, | |
373 | const char* format, ...); | |
374 | #endif | |
375 | ||
376 | #ifdef HAVE_TARGET_64_LITTLE | |
377 | template | |
378 | void | |
379 | gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo, | |
380 | size_t relnum, off_t reloffset, | |
381 | const char* format, ...); | |
382 | #endif | |
383 | ||
384 | #ifdef HAVE_TARGET_64_BIG | |
385 | template | |
386 | void | |
387 | gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo, | |
388 | size_t relnum, off_t reloffset, | |
389 | const char* format, ...); | |
390 | #endif | |
391 | ||
392 | #ifdef HAVE_TARGET_32_LITTLE | |
393 | template | |
394 | void | |
f073bbf7 CD |
395 | gold_undefined_symbol_at_location<32, false>( |
396 | const Symbol* sym, | |
397 | const Relocate_info<32, false>* relinfo, | |
398 | size_t relnum, off_t reloffset); | |
75f2446e ILT |
399 | #endif |
400 | ||
401 | #ifdef HAVE_TARGET_32_BIG | |
402 | template | |
403 | void | |
f073bbf7 CD |
404 | gold_undefined_symbol_at_location<32, true>( |
405 | const Symbol* sym, | |
406 | const Relocate_info<32, true>* relinfo, | |
407 | size_t relnum, off_t reloffset); | |
75f2446e ILT |
408 | #endif |
409 | ||
410 | #ifdef HAVE_TARGET_64_LITTLE | |
411 | template | |
412 | void | |
f073bbf7 CD |
413 | gold_undefined_symbol_at_location<64, false>( |
414 | const Symbol* sym, | |
415 | const Relocate_info<64, false>* relinfo, | |
416 | size_t relnum, off_t reloffset); | |
75f2446e ILT |
417 | #endif |
418 | ||
419 | #ifdef HAVE_TARGET_64_BIG | |
420 | template | |
421 | void | |
f073bbf7 CD |
422 | gold_undefined_symbol_at_location<64, true>( |
423 | const Symbol* sym, | |
424 | const Relocate_info<64, true>* relinfo, | |
425 | size_t relnum, off_t reloffset); | |
75f2446e ILT |
426 | #endif |
427 | ||
428 | } // End namespace gold. |