gold/errors.cc

   1 // errors.cc -- handle errors for gold
   2
   3 // Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   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
  41 Errors::Errors(const char* prog_name)
  42   : program_name_(prog_name), lock_(NULL), initialize_lock_(&this->lock_),
  43     error_count_(0), warning_count_(0), undefined_symbols_()
  44 {
  45 }
  46
  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.
  52
  53 bool
  54 Errors::initialize_lock()
  55 {
  56   return this->initialize_lock_.initialize();
  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     }
  74 }
  75
  76 // Report a fatal error.
  77
  78 void
  79 Errors::fatal(const char* format, va_list args)
  80 {
  81   fprintf(stderr, _("%s: fatal error: "), this->program_name_);
  82   vfprintf(stderr, format, args);
  83   fputc('\n', stderr);
  84   gold_exit(false);
  85 }
  86
  87 // Report an error.
  88
  89 void
  90 Errors::error(const char* format, va_list args)
  91 {
  92   fprintf(stderr, _("%s: error: "), this->program_name_);
  93   vfprintf(stderr, format, args);
  94   fputc('\n', stderr);
  95
  96   this->increment_counter(&this->error_count_);
  97 }
  98
  99 // Report a warning.
 100
 101 void
 102 Errors::warning(const char* format, va_list args)
 103 {
 104   fprintf(stderr, _("%s: warning: "), this->program_name_);
 105   vfprintf(stderr, format, args);
 106   fputc('\n', stderr);
 107
 108   this->increment_counter(&this->warning_count_);
 109 }
 110
 111 // Print an informational message.
 112
 113 void
 114 Errors::info(const char* format, va_list args)
 115 {
 116   vfprintf(stderr, format, args);
 117   fputc('\n', stderr);
 118 }
 119
 120 // Report an error at a reloc location.
 121
 122 template<int size, bool big_endian>
 123 void
 124 Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
 125                           size_t relnum, off_t reloffset,
 126                           const char* format, va_list args)
 127 {
 128   fprintf(stderr, _("%s: %s: error: "), this->program_name_,
 129           relinfo->location(relnum, reloffset).c_str());
 130   vfprintf(stderr, format, args);
 131   fputc('\n', stderr);
 132
 133   this->increment_counter(&this->error_count_);
 134 }
 135
 136 // Report a warning at a reloc location.
 137
 138 template<int size, bool big_endian>
 139 void
 140 Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 141                             size_t relnum, off_t reloffset,
 142                             const char* format, va_list args)
 143 {
 144   fprintf(stderr, _("%s: %s: warning: "), this->program_name_,
 145           relinfo->location(relnum, reloffset).c_str());
 146   vfprintf(stderr, format, args);
 147   fputc('\n', stderr);
 148
 149   this->increment_counter(&this->warning_count_);
 150 }
 151
 152 // Issue an undefined symbol error with a caller-supplied location string.
 153
 154 void
 155 Errors::undefined_symbol(const Symbol* sym, const std::string& location)
 156 {
 157   bool initialized = this->initialize_lock();
 158   gold_assert(initialized);
 159   {
 160     Hold_lock h(*this->lock_);
 161     if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
 162       return;
 163     ++this->error_count_;
 164   }
 165   const char* const version = sym->version();
 166   if (version == NULL)
 167     fprintf(stderr, _("%s: %s: error: undefined reference to '%s'\n"),
 168             this->program_name_, location.c_str(),
 169             sym->demangled_name().c_str());
 170   else
 171     fprintf(stderr,
 172             _("%s: %s: error: undefined reference to '%s', version '%s'\n"),
 173             this->program_name_, location.c_str(),
 174             sym->demangled_name().c_str(), version);
 175 }
 176
 177 // Issue a debugging message.
 178
 179 void
 180 Errors::debug(const char* format, ...)
 181 {
 182   fprintf(stderr, _("%s: "), this->program_name_);
 183
 184   va_list args;
 185   va_start(args, format);
 186   vfprintf(stderr, format, args);
 187   va_end(args);
 188
 189   fputc('\n', stderr);
 190 }
 191
 192 // The functions which the rest of the code actually calls.
 193
 194 // Report a fatal error.
 195
 196 void
 197 gold_fatal(const char* format, ...)
 198 {
 199   va_list args;
 200   va_start(args, format);
 201   parameters->errors()->fatal(format, args);
 202   va_end(args);
 203 }
 204
 205 // Report an error.
 206
 207 void
 208 gold_error(const char* format, ...)
 209 {
 210   va_list args;
 211   va_start(args, format);
 212   parameters->errors()->error(format, args);
 213   va_end(args);
 214 }
 215
 216 // Report a warning.
 217
 218 void
 219 gold_warning(const char* format, ...)
 220 {
 221   va_list args;
 222   va_start(args, format);
 223   parameters->errors()->warning(format, args);
 224   va_end(args);
 225 }
 226
 227 // Print an informational message.
 228
 229 void
 230 gold_info(const char* format, ...)
 231 {
 232   va_list args;
 233   va_start(args, format);
 234   parameters->errors()->info(format, args);
 235   va_end(args);
 236 }
 237
 238 // Report an error at a location.
 239
 240 template<int size, bool big_endian>
 241 void
 242 gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
 243                        size_t relnum, off_t reloffset,
 244                        const char* format, ...)
 245 {
 246   va_list args;
 247   va_start(args, format);
 248   parameters->errors()->error_at_location(relinfo, relnum, reloffset,
 249                                           format, args);
 250   va_end(args);
 251 }
 252
 253 // Report a warning at a location.
 254
 255 template<int size, bool big_endian>
 256 void
 257 gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 258                          size_t relnum, off_t reloffset,
 259                          const char* format, ...)
 260 {
 261   va_list args;
 262   va_start(args, format);
 263   parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
 264                                             format, args);
 265   va_end(args);
 266 }
 267
 268 // Report an undefined symbol.
 269
 270 void
 271 gold_undefined_symbol(const Symbol* sym)
 272 {
 273   parameters->errors()->undefined_symbol(sym, sym->object()->name().c_str());
 274 }
 275
 276 // Report an undefined symbol at a reloc location
 277
 278 template<int size, bool big_endian>
 279 void
 280 gold_undefined_symbol_at_location(const Symbol* sym,
 281                       const Relocate_info<size, big_endian>* relinfo,
 282                       size_t relnum, off_t reloffset)
 283 {
 284   parameters->errors()->undefined_symbol(sym,
 285                                          relinfo->location(relnum, reloffset));
 286 }
 287
 288 #ifdef HAVE_TARGET_32_LITTLE
 289 template
 290 void
 291 gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 292                                   size_t relnum, off_t reloffset,
 293                                   const char* format, ...);
 294 #endif
 295
 296 #ifdef HAVE_TARGET_32_BIG
 297 template
 298 void
 299 gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 300                                  size_t relnum, off_t reloffset,
 301                                  const char* format, ...);
 302 #endif
 303
 304 #ifdef HAVE_TARGET_64_LITTLE
 305 template
 306 void
 307 gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 308                                   size_t relnum, off_t reloffset,
 309                                   const char* format, ...);
 310 #endif
 311
 312 #ifdef HAVE_TARGET_64_BIG
 313 template
 314 void
 315 gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 316                                  size_t relnum, off_t reloffset,
 317                                  const char* format, ...);
 318 #endif
 319
 320 #ifdef HAVE_TARGET_32_LITTLE
 321 template
 322 void
 323 gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 324                                     size_t relnum, off_t reloffset,
 325                                     const char* format, ...);
 326 #endif
 327
 328 #ifdef HAVE_TARGET_32_BIG
 329 template
 330 void
 331 gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 332                                    size_t relnum, off_t reloffset,
 333                                    const char* format, ...);
 334 #endif
 335
 336 #ifdef HAVE_TARGET_64_LITTLE
 337 template
 338 void
 339 gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 340                                     size_t relnum, off_t reloffset,
 341                                     const char* format, ...);
 342 #endif
 343
 344 #ifdef HAVE_TARGET_64_BIG
 345 template
 346 void
 347 gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 348                                    size_t relnum, off_t reloffset,
 349                                    const char* format, ...);
 350 #endif
 351
 352 #ifdef HAVE_TARGET_32_LITTLE
 353 template
 354 void
 355 gold_undefined_symbol_at_location<32, false>(
 356     const Symbol* sym,
 357     const Relocate_info<32, false>* relinfo,
 358     size_t relnum, off_t reloffset);
 359 #endif
 360
 361 #ifdef HAVE_TARGET_32_BIG
 362 template
 363 void
 364 gold_undefined_symbol_at_location<32, true>(
 365     const Symbol* sym,
 366     const Relocate_info<32, true>* relinfo,
 367     size_t relnum, off_t reloffset);
 368 #endif
 369
 370 #ifdef HAVE_TARGET_64_LITTLE
 371 template
 372 void
 373 gold_undefined_symbol_at_location<64, false>(
 374     const Symbol* sym,
 375     const Relocate_info<64, false>* relinfo,
 376     size_t relnum, off_t reloffset);
 377 #endif
 378
 379 #ifdef HAVE_TARGET_64_BIG
 380 template
 381 void
 382 gold_undefined_symbol_at_location<64, true>(
 383     const Symbol* sym,
 384     const Relocate_info<64, true>* relinfo,
 385     size_t relnum, off_t reloffset);
 386 #endif
 387
 388 } // End namespace gold.