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 // Report an error at a reloc location.
 114
 115 template<int size, bool big_endian>
 116 void
 117 Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
 118                           size_t relnum, off_t reloffset,
 119                           const char* format, va_list args)
 120 {
 121   fprintf(stderr, "%s: %s: ", this->program_name_,
 122           relinfo->location(relnum, reloffset).c_str());
 123   vfprintf(stderr, format, args);
 124   fputc('\n', stderr);
 125
 126   this->increment_counter(&this->error_count_);
 127 }
 128
 129 // Report a warning at a reloc location.
 130
 131 template<int size, bool big_endian>
 132 void
 133 Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 134                             size_t relnum, off_t reloffset,
 135                             const char* format, va_list args)
 136 {
 137   fprintf(stderr, _("%s: %s: warning: "), this->program_name_,
 138           relinfo->location(relnum, reloffset).c_str());
 139   vfprintf(stderr, format, args);
 140   fputc('\n', stderr);
 141
 142   this->increment_counter(&this->warning_count_);
 143 }
 144
 145 // Issue an undefined symbol error.
 146
 147 template<int size, bool big_endian>
 148 void
 149 Errors::undefined_symbol(const Symbol* sym,
 150                          const Relocate_info<size, big_endian>* relinfo,
 151                          size_t relnum, off_t reloffset)
 152 {
 153   bool initialized = this->initialize_lock();
 154   gold_assert(initialized);
 155   {
 156     Hold_lock h(*this->lock_);
 157     if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
 158       return;
 159     ++this->error_count_;
 160   }
 161   const char* const version = sym->version();
 162   if (version == NULL)
 163     fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
 164             this->program_name_, relinfo->location(relnum, reloffset).c_str(),
 165             sym->demangled_name().c_str());
 166   else
 167     fprintf(stderr, _("%s: %s: undefined reference to '%s', version '%s'\n"),
 168             this->program_name_, relinfo->location(relnum, reloffset).c_str(),
 169             sym->demangled_name().c_str(), version);
 170 }
 171
 172 // Issue a debugging message.
 173
 174 void
 175 Errors::debug(const char* format, ...)
 176 {
 177   fprintf(stderr, _("%s: "), this->program_name_);
 178
 179   va_list args;
 180   va_start(args, format);
 181   vfprintf(stderr, format, args);
 182   va_end(args);
 183
 184   fputc('\n', stderr);
 185 }
 186
 187 // The functions which the rest of the code actually calls.
 188
 189 // Report a fatal error.
 190
 191 void
 192 gold_fatal(const char* format, ...)
 193 {
 194   va_list args;
 195   va_start(args, format);
 196   parameters->errors()->fatal(format, args);
 197   va_end(args);
 198 }
 199
 200 // Report an error.
 201
 202 void
 203 gold_error(const char* format, ...)
 204 {
 205   va_list args;
 206   va_start(args, format);
 207   parameters->errors()->error(format, args);
 208   va_end(args);
 209 }
 210
 211 // Report a warning.
 212
 213 void
 214 gold_warning(const char* format, ...)
 215 {
 216   va_list args;
 217   va_start(args, format);
 218   parameters->errors()->warning(format, args);
 219   va_end(args);
 220 }
 221
 222 // Report an error at a location.
 223
 224 template<int size, bool big_endian>
 225 void
 226 gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
 227                        size_t relnum, off_t reloffset,
 228                        const char* format, ...)
 229 {
 230   va_list args;
 231   va_start(args, format);
 232   parameters->errors()->error_at_location(relinfo, relnum, reloffset,
 233                                           format, args);
 234   va_end(args);
 235 }
 236
 237 // Report a warning at a location.
 238
 239 template<int size, bool big_endian>
 240 void
 241 gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 242                          size_t relnum, off_t reloffset,
 243                          const char* format, ...)
 244 {
 245   va_list args;
 246   va_start(args, format);
 247   parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
 248                                             format, args);
 249   va_end(args);
 250 }
 251
 252 // Report an undefined symbol.
 253
 254 template<int size, bool big_endian>
 255 void
 256 gold_undefined_symbol(const Symbol* sym,
 257                       const Relocate_info<size, big_endian>* relinfo,
 258                       size_t relnum, off_t reloffset)
 259 {
 260   parameters->errors()->undefined_symbol(sym, relinfo, relnum, reloffset);
 261 }
 262
 263 #ifdef HAVE_TARGET_32_LITTLE
 264 template
 265 void
 266 gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 267                                   size_t relnum, off_t reloffset,
 268                                   const char* format, ...);
 269 #endif
 270
 271 #ifdef HAVE_TARGET_32_BIG
 272 template
 273 void
 274 gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 275                                  size_t relnum, off_t reloffset,
 276                                  const char* format, ...);
 277 #endif
 278
 279 #ifdef HAVE_TARGET_64_LITTLE
 280 template
 281 void
 282 gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 283                                   size_t relnum, off_t reloffset,
 284                                   const char* format, ...);
 285 #endif
 286
 287 #ifdef HAVE_TARGET_64_BIG
 288 template
 289 void
 290 gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 291                                  size_t relnum, off_t reloffset,
 292                                  const char* format, ...);
 293 #endif
 294
 295 #ifdef HAVE_TARGET_32_LITTLE
 296 template
 297 void
 298 gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 299                                     size_t relnum, off_t reloffset,
 300                                     const char* format, ...);
 301 #endif
 302
 303 #ifdef HAVE_TARGET_32_BIG
 304 template
 305 void
 306 gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 307                                    size_t relnum, off_t reloffset,
 308                                    const char* format, ...);
 309 #endif
 310
 311 #ifdef HAVE_TARGET_64_LITTLE
 312 template
 313 void
 314 gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 315                                     size_t relnum, off_t reloffset,
 316                                     const char* format, ...);
 317 #endif
 318
 319 #ifdef HAVE_TARGET_64_BIG
 320 template
 321 void
 322 gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 323                                    size_t relnum, off_t reloffset,
 324                                    const char* format, ...);
 325 #endif
 326
 327 #ifdef HAVE_TARGET_32_LITTLE
 328 template
 329 void
 330 gold_undefined_symbol<32, false>(const Symbol* sym,
 331                                  const Relocate_info<32, false>* relinfo,
 332                                  size_t relnum, off_t reloffset);
 333 #endif
 334
 335 #ifdef HAVE_TARGET_32_BIG
 336 template
 337 void
 338 gold_undefined_symbol<32, true>(const Symbol* sym,
 339                                 const Relocate_info<32, true>* relinfo,
 340                                 size_t relnum, off_t reloffset);
 341 #endif
 342
 343 #ifdef HAVE_TARGET_64_LITTLE
 344 template
 345 void
 346 gold_undefined_symbol<64, false>(const Symbol* sym,
 347                                  const Relocate_info<64, false>* relinfo,
 348                                  size_t relnum, off_t reloffset);
 349 #endif
 350
 351 #ifdef HAVE_TARGET_64_BIG
 352 template
 353 void
 354 gold_undefined_symbol<64, true>(const Symbol* sym,
 355                                 const Relocate_info<64, true>* relinfo,
 356                                 size_t relnum, off_t reloffset);
 357 #endif
 358
 359 } // End namespace gold.