gold/errors.cc

   1 // errors.cc -- handle errors for gold
   2
   3 // Copyright 2006, 2007, 2008 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* program_name)
  42   : program_name_(program_name), lock_(NULL), error_count_(0),
  43     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   if (this->lock_ == NULL && parameters->options_valid())
  57     this->lock_ = new Lock;
  58   return this->lock_ != NULL;
  59 }
  60
  61 // Increment a counter, holding the lock if available.
  62
  63 void
  64 Errors::increment_counter(int *counter)
  65 {
  66   if (!this->initialize_lock())
  67     {
  68       // The lock does not exist, which means that we don't need it.
  69       ++*counter;
  70     }
  71   else
  72     {
  73       Hold_lock h(*this->lock_);
  74       ++*counter;
  75     }
  76 }
  77
  78 // Report a fatal error.
  79
  80 void
  81 Errors::fatal(const char* format, va_list args)
  82 {
  83   fprintf(stderr, "%s: ", this->program_name_);
  84   vfprintf(stderr, format, args);
  85   fputc('\n', stderr);
  86   gold_exit(false);
  87 }
  88
  89 // Report an error.
  90
  91 void
  92 Errors::error(const char* format, va_list args)
  93 {
  94   fprintf(stderr, "%s: ", this->program_name_);
  95   vfprintf(stderr, format, args);
  96   fputc('\n', stderr);
  97
  98   this->increment_counter(&this->error_count_);
  99 }
 100
 101 // Report a warning.
 102
 103 void
 104 Errors::warning(const char* format, va_list args)
 105 {
 106   fprintf(stderr, _("%s: warning: "), this->program_name_);
 107   vfprintf(stderr, format, args);
 108   fputc('\n', stderr);
 109
 110   this->increment_counter(&this->warning_count_);
 111 }
 112
 113 // Print an informational message.
 114
 115 void
 116 Errors::info(const char* format, va_list args)
 117 {
 118   vfprintf(stderr, format, args);
 119   fputc('\n', stderr);
 120 }
 121
 122 // Report an error at a reloc location.
 123
 124 template<int size, bool big_endian>
 125 void
 126 Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
 127                           size_t relnum, off_t reloffset,
 128                           const char* format, va_list args)
 129 {
 130   fprintf(stderr, "%s: %s: ", this->program_name_,
 131           relinfo->location(relnum, reloffset).c_str());
 132   vfprintf(stderr, format, args);
 133   fputc('\n', stderr);
 134
 135   this->increment_counter(&this->error_count_);
 136 }
 137
 138 // Report a warning at a reloc location.
 139
 140 template<int size, bool big_endian>
 141 void
 142 Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 143                             size_t relnum, off_t reloffset,
 144                             const char* format, va_list args)
 145 {
 146   fprintf(stderr, _("%s: %s: warning: "), this->program_name_,
 147           relinfo->location(relnum, reloffset).c_str());
 148   vfprintf(stderr, format, args);
 149   fputc('\n', stderr);
 150
 151   this->increment_counter(&this->warning_count_);
 152 }
 153
 154 // Issue an undefined symbol error.
 155
 156 template<int size, bool big_endian>
 157 void
 158 Errors::undefined_symbol(const Symbol* sym,
 159                          const Relocate_info<size, big_endian>* relinfo,
 160                          size_t relnum, off_t reloffset)
 161 {
 162   bool initialized = this->initialize_lock();
 163   gold_assert(initialized);
 164   {
 165     Hold_lock h(*this->lock_);
 166     if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
 167       return;
 168     ++this->error_count_;
 169   }
 170   const char* const version = sym->version();
 171   if (version == NULL)
 172     fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
 173             this->program_name_, relinfo->location(relnum, reloffset).c_str(),
 174             sym->demangled_name().c_str());
 175   else
 176     fprintf(stderr, _("%s: %s: undefined reference to '%s', version '%s'\n"),
 177             this->program_name_, relinfo->location(relnum, reloffset).c_str(),
 178             sym->demangled_name().c_str(), version);
 179 }
 180
 181 // Issue a debugging message.
 182
 183 void
 184 Errors::debug(const char* format, ...)
 185 {
 186   fprintf(stderr, _("%s: "), this->program_name_);
 187
 188   va_list args;
 189   va_start(args, format);
 190   vfprintf(stderr, format, args);
 191   va_end(args);
 192
 193   fputc('\n', stderr);
 194 }
 195
 196 // The functions which the rest of the code actually calls.
 197
 198 // Report a fatal error.
 199
 200 void
 201 gold_fatal(const char* format, ...)
 202 {
 203   va_list args;
 204   va_start(args, format);
 205   parameters->errors()->fatal(format, args);
 206   va_end(args);
 207 }
 208
 209 // Report an error.
 210
 211 void
 212 gold_error(const char* format, ...)
 213 {
 214   va_list args;
 215   va_start(args, format);
 216   parameters->errors()->error(format, args);
 217   va_end(args);
 218 }
 219
 220 // Report a warning.
 221
 222 void
 223 gold_warning(const char* format, ...)
 224 {
 225   va_list args;
 226   va_start(args, format);
 227   parameters->errors()->warning(format, args);
 228   va_end(args);
 229 }
 230
 231 // Print an informational message.
 232
 233 void
 234 gold_info(const char* format, ...)
 235 {
 236   va_list args;
 237   va_start(args, format);
 238   parameters->errors()->info(format, args);
 239   va_end(args);
 240 }
 241
 242 // Report an error at a location.
 243
 244 template<int size, bool big_endian>
 245 void
 246 gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
 247                        size_t relnum, off_t reloffset,
 248                        const char* format, ...)
 249 {
 250   va_list args;
 251   va_start(args, format);
 252   parameters->errors()->error_at_location(relinfo, relnum, reloffset,
 253                                           format, args);
 254   va_end(args);
 255 }
 256
 257 // Report a warning at a location.
 258
 259 template<int size, bool big_endian>
 260 void
 261 gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 262                          size_t relnum, off_t reloffset,
 263                          const char* format, ...)
 264 {
 265   va_list args;
 266   va_start(args, format);
 267   parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
 268                                             format, args);
 269   va_end(args);
 270 }
 271
 272 // Report an undefined symbol.
 273
 274 template<int size, bool big_endian>
 275 void
 276 gold_undefined_symbol(const Symbol* sym,
 277                       const Relocate_info<size, big_endian>* relinfo,
 278                       size_t relnum, off_t reloffset)
 279 {
 280   parameters->errors()->undefined_symbol(sym, relinfo, relnum, reloffset);
 281 }
 282
 283 #ifdef HAVE_TARGET_32_LITTLE
 284 template
 285 void
 286 gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 287                                   size_t relnum, off_t reloffset,
 288                                   const char* format, ...);
 289 #endif
 290
 291 #ifdef HAVE_TARGET_32_BIG
 292 template
 293 void
 294 gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 295                                  size_t relnum, off_t reloffset,
 296                                  const char* format, ...);
 297 #endif
 298
 299 #ifdef HAVE_TARGET_64_LITTLE
 300 template
 301 void
 302 gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 303                                   size_t relnum, off_t reloffset,
 304                                   const char* format, ...);
 305 #endif
 306
 307 #ifdef HAVE_TARGET_64_BIG
 308 template
 309 void
 310 gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 311                                  size_t relnum, off_t reloffset,
 312                                  const char* format, ...);
 313 #endif
 314
 315 #ifdef HAVE_TARGET_32_LITTLE
 316 template
 317 void
 318 gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 319                                     size_t relnum, off_t reloffset,
 320                                     const char* format, ...);
 321 #endif
 322
 323 #ifdef HAVE_TARGET_32_BIG
 324 template
 325 void
 326 gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 327                                    size_t relnum, off_t reloffset,
 328                                    const char* format, ...);
 329 #endif
 330
 331 #ifdef HAVE_TARGET_64_LITTLE
 332 template
 333 void
 334 gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 335                                     size_t relnum, off_t reloffset,
 336                                     const char* format, ...);
 337 #endif
 338
 339 #ifdef HAVE_TARGET_64_BIG
 340 template
 341 void
 342 gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 343                                    size_t relnum, off_t reloffset,
 344                                    const char* format, ...);
 345 #endif
 346
 347 #ifdef HAVE_TARGET_32_LITTLE
 348 template
 349 void
 350 gold_undefined_symbol<32, false>(const Symbol* sym,
 351                                  const Relocate_info<32, false>* relinfo,
 352                                  size_t relnum, off_t reloffset);
 353 #endif
 354
 355 #ifdef HAVE_TARGET_32_BIG
 356 template
 357 void
 358 gold_undefined_symbol<32, true>(const Symbol* sym,
 359                                 const Relocate_info<32, true>* relinfo,
 360                                 size_t relnum, off_t reloffset);
 361 #endif
 362
 363 #ifdef HAVE_TARGET_64_LITTLE
 364 template
 365 void
 366 gold_undefined_symbol<64, false>(const Symbol* sym,
 367                                  const Relocate_info<64, false>* relinfo,
 368                                  size_t relnum, off_t reloffset);
 369 #endif
 370
 371 #ifdef HAVE_TARGET_64_BIG
 372 template
 373 void
 374 gold_undefined_symbol<64, true>(const Symbol* sym,
 375                                 const Relocate_info<64, true>* relinfo,
 376                                 size_t relnum, off_t reloffset);
 377 #endif
 378
 379 } // End namespace gold.