summaryrefslogtreecommitdiff
path: root/gold/errors.cc
blob: b79764bd1d8285308e7bef6468e929c3279b18ef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
// errors.cc -- handle errors for gold

// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of gold.

// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.

#include "gold.h"

#include <cstdarg>
#include <cstdio>

#include "gold-threads.h"
#include "parameters.h"
#include "object.h"
#include "symtab.h"
#include "errors.h"

namespace gold
{

// Class Errors.

const int Errors::max_undefined_error_report;

Errors::Errors(const char* program_name)
  : program_name_(program_name), lock_(NULL), initialize_lock_(&this->lock_),
    error_count_(0), warning_count_(0), undefined_symbols_()
{
}

// Initialize the lock_ field.  If we have not yet processed the
// parameters, then we can't initialize, since we don't yet know
// whether we are using threads.  That is OK, since if we haven't
// processed the parameters, we haven't created any threads, and we
// don't need a lock.  Return true if the lock is now initialized.

bool
Errors::initialize_lock()
{
  return this->initialize_lock_.initialize();
}

// Increment a counter, holding the lock if available.

void
Errors::increment_counter(int *counter)
{
  if (!this->initialize_lock())
    {
      // The lock does not exist, which means that we don't need it.
      ++*counter;
    }
  else
    {
      Hold_lock h(*this->lock_);
      ++*counter;
    }
}

// Report a fatal error.

void
Errors::fatal(const char* format, va_list args)
{
  fprintf(stderr, _("%s: fatal error: "), this->program_name_);
  vfprintf(stderr, format, args);
  fputc('\n', stderr);
  gold_exit(GOLD_ERR);
}

// Report a fallback error.

void
Errors::fallback(const char* format, va_list args)
{
  fprintf(stderr, _("%s: fatal error: "), this->program_name_);
  vfprintf(stderr, format, args);
  fputc('\n', stderr);
  gold_exit(GOLD_FALLBACK);
}

// Report an error.

void
Errors::error(const char* format, va_list args)
{
  fprintf(stderr, _("%s: error: "), this->program_name_);
  vfprintf(stderr, format, args);
  fputc('\n', stderr);

  this->increment_counter(&this->error_count_);
}

// Report a warning.

void
Errors::warning(const char* format, va_list args)
{
  fprintf(stderr, _("%s: warning: "), this->program_name_);
  vfprintf(stderr, format, args);
  fputc('\n', stderr);

  this->increment_counter(&this->warning_count_);
}

// Print an informational message.

void
Errors::info(const char* format, va_list args)
{
  vfprintf(stderr, format, args);
  fputc('\n', stderr);
}

// Report an error at a reloc location.

template<int size, bool big_endian>
void
Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
			  size_t relnum, off_t reloffset,
			  const char* format, va_list args)
{
  fprintf(stderr, _("%s: error: "),
	  relinfo->location(relnum, reloffset).c_str());
  vfprintf(stderr, format, args);
  fputc('\n', stderr);

  this->increment_counter(&this->error_count_);
}

// Report a warning at a reloc location.

template<int size, bool big_endian>
void
Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
			    size_t relnum, off_t reloffset,
			    const char* format, va_list args)
{
  fprintf(stderr, _("%s: warning: "), 
	  relinfo->location(relnum, reloffset).c_str());
  vfprintf(stderr, format, args);
  fputc('\n', stderr);

  this->increment_counter(&this->warning_count_);
}

// Issue an undefined symbol error with a caller-supplied location string.

void
Errors::undefined_symbol(const Symbol* sym, const std::string& location)
{
  bool initialized = this->initialize_lock();
  gold_assert(initialized);

  const char* zmsg;
  {
    Hold_lock h(*this->lock_);
    if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
      return;
    if (parameters->options().warn_unresolved_symbols())
      {
	++this->warning_count_;
	zmsg = _("warning");
      }
    else
      {
	++this->error_count_;
	zmsg = _("error");
      }
  }

  const char* const version = sym->version();
  if (version == NULL)
    fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
	    location.c_str(), zmsg, sym->demangled_name().c_str());
  else
    fprintf(stderr,
            _("%s: %s: undefined reference to '%s', version '%s'\n"),
	    location.c_str(), zmsg, sym->demangled_name().c_str(), version);
}

// Issue a debugging message.

void
Errors::debug(const char* format, ...)
{
  fprintf(stderr, _("%s: "), this->program_name_);

  va_list args;
  va_start(args, format);
  vfprintf(stderr, format, args);
  va_end(args);

  fputc('\n', stderr);
}

// The functions which the rest of the code actually calls.

// Report a fatal error.

void
gold_fatal(const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->fatal(format, args);
  va_end(args);
}

// Report a fallback error.

void
gold_fallback(const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->fallback(format, args);
  va_end(args);
}

// Report an error.

void
gold_error(const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->error(format, args);
  va_end(args);
}

// Report a warning.

void
gold_warning(const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->warning(format, args);
  va_end(args);
}

// Print an informational message.

void
gold_info(const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->info(format, args);
  va_end(args);
}

// Report an error at a location.

template<int size, bool big_endian>
void
gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
		       size_t relnum, off_t reloffset,
		       const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->error_at_location(relinfo, relnum, reloffset,
					  format, args);
  va_end(args);
}

// Report a warning at a location.

template<int size, bool big_endian>
void
gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
			 size_t relnum, off_t reloffset,
			 const char* format, ...)
{
  va_list args;
  va_start(args, format);
  parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
					    format, args);
  va_end(args);
}

// Report an undefined symbol.

void
gold_undefined_symbol(const Symbol* sym)
{
  parameters->errors()->undefined_symbol(sym, sym->object()->name().c_str());
}

// Report an undefined symbol at a reloc location

template<int size, bool big_endian>
void
gold_undefined_symbol_at_location(const Symbol* sym,
		      const Relocate_info<size, big_endian>* relinfo,
		      size_t relnum, off_t reloffset)
{
  parameters->errors()->undefined_symbol(sym,
                                         relinfo->location(relnum, reloffset));
}

#ifdef HAVE_TARGET_32_LITTLE
template
void
gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
				  size_t relnum, off_t reloffset,
				  const char* format, ...);
#endif

#ifdef HAVE_TARGET_32_BIG
template
void
gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
				 size_t relnum, off_t reloffset,
				 const char* format, ...);
#endif

#ifdef HAVE_TARGET_64_LITTLE
template
void
gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
				  size_t relnum, off_t reloffset,
				  const char* format, ...);
#endif

#ifdef HAVE_TARGET_64_BIG
template
void
gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
				 size_t relnum, off_t reloffset,
				 const char* format, ...);
#endif

#ifdef HAVE_TARGET_32_LITTLE
template
void
gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
				    size_t relnum, off_t reloffset,
				    const char* format, ...);
#endif

#ifdef HAVE_TARGET_32_BIG
template
void
gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
				   size_t relnum, off_t reloffset,
				   const char* format, ...);
#endif

#ifdef HAVE_TARGET_64_LITTLE
template
void
gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
				    size_t relnum, off_t reloffset,
				    const char* format, ...);
#endif

#ifdef HAVE_TARGET_64_BIG
template
void
gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
				   size_t relnum, off_t reloffset,
				   const char* format, ...);
#endif

#ifdef HAVE_TARGET_32_LITTLE
template
void
gold_undefined_symbol_at_location<32, false>(
    const Symbol* sym,
    const Relocate_info<32, false>* relinfo,
    size_t relnum, off_t reloffset);
#endif

#ifdef HAVE_TARGET_32_BIG
template
void
gold_undefined_symbol_at_location<32, true>(
    const Symbol* sym,
    const Relocate_info<32, true>* relinfo,
    size_t relnum, off_t reloffset);
#endif

#ifdef HAVE_TARGET_64_LITTLE
template
void
gold_undefined_symbol_at_location<64, false>(
    const Symbol* sym,
    const Relocate_info<64, false>* relinfo,
    size_t relnum, off_t reloffset);
#endif

#ifdef HAVE_TARGET_64_BIG
template
void
gold_undefined_symbol_at_location<64, true>(
    const Symbol* sym,
    const Relocate_info<64, true>* relinfo,
    size_t relnum, off_t reloffset);
#endif

} // End namespace gold.