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: fatal error: "), 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: error: "), 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: error: "), 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 with a caller-supplied location string.
 155
 156 void
 157 Errors::undefined_symbol(const Symbol* sym, const std::string& location)
 158 {
 159   bool initialized = this->initialize_lock();
 160   gold_assert(initialized);
 161   {
 162     Hold_lock h(*this->lock_);
 163     if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
 164       return;
 165     ++this->error_count_;
 166   }
 167   const char* const version = sym->version();
 168   if (version == NULL)
 169     fprintf(stderr, _("%s: %s: error: undefined reference to '%s'\n"),
 170             this->program_name_, location.c_str(),
 171             sym->demangled_name().c_str());
 172   else
 173     fprintf(stderr,
 174             _("%s: %s: error: undefined reference to '%s', version '%s'\n"),
 175             this->program_name_, location.c_str(),
 176             sym->demangled_name().c_str(), version);
 177 }
 178
 179 // Issue a debugging message.
 180
 181 void
 182 Errors::debug(const char* format, ...)
 183 {
 184   fprintf(stderr, _("%s: "), this->program_name_);
 185
 186   va_list args;
 187   va_start(args, format);
 188   vfprintf(stderr, format, args);
 189   va_end(args);
 190
 191   fputc('\n', stderr);
 192 }
 193
 194 // The functions which the rest of the code actually calls.
 195
 196 // Report a fatal error.
 197
 198 void
 199 gold_fatal(const char* format, ...)
 200 {
 201   va_list args;
 202   va_start(args, format);
 203   parameters->errors()->fatal(format, args);
 204   va_end(args);
 205 }
 206
 207 // Report an error.
 208
 209 void
 210 gold_error(const char* format, ...)
 211 {
 212   va_list args;
 213   va_start(args, format);
 214   parameters->errors()->error(format, args);
 215   va_end(args);
 216 }
 217
 218 // Report a warning.
 219
 220 void
 221 gold_warning(const char* format, ...)
 222 {
 223   va_list args;
 224   va_start(args, format);
 225   parameters->errors()->warning(format, args);
 226   va_end(args);
 227 }
 228
 229 // Print an informational message.
 230
 231 void
 232 gold_info(const char* format, ...)
 233 {
 234   va_list args;
 235   va_start(args, format);
 236   parameters->errors()->info(format, args);
 237   va_end(args);
 238 }
 239
 240 // Report an error at a location.
 241
 242 template<int size, bool big_endian>
 243 void
 244 gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
 245                        size_t relnum, off_t reloffset,
 246                        const char* format, ...)
 247 {
 248   va_list args;
 249   va_start(args, format);
 250   parameters->errors()->error_at_location(relinfo, relnum, reloffset,
 251                                           format, args);
 252   va_end(args);
 253 }
 254
 255 // Report a warning at a location.
 256
 257 template<int size, bool big_endian>
 258 void
 259 gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 260                          size_t relnum, off_t reloffset,
 261                          const char* format, ...)
 262 {
 263   va_list args;
 264   va_start(args, format);
 265   parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
 266                                             format, args);
 267   va_end(args);
 268 }
 269
 270 // Report an undefined symbol.
 271
 272 void
 273 gold_undefined_symbol(const Symbol* sym)
 274 {
 275   parameters->errors()->undefined_symbol(sym, sym->object()->name().c_str());
 276 }
 277
 278 // Report an undefined symbol at a reloc location
 279
 280 template<int size, bool big_endian>
 281 void
 282 gold_undefined_symbol_at_location(const Symbol* sym,
 283                       const Relocate_info<size, big_endian>* relinfo,
 284                       size_t relnum, off_t reloffset)
 285 {
 286   parameters->errors()->undefined_symbol(sym,
 287                                          relinfo->location(relnum, reloffset));
 288 }
 289
 290 #ifdef HAVE_TARGET_32_LITTLE
 291 template
 292 void
 293 gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 294                                   size_t relnum, off_t reloffset,
 295                                   const char* format, ...);
 296 #endif
 297
 298 #ifdef HAVE_TARGET_32_BIG
 299 template
 300 void
 301 gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 302                                  size_t relnum, off_t reloffset,
 303                                  const char* format, ...);
 304 #endif
 305
 306 #ifdef HAVE_TARGET_64_LITTLE
 307 template
 308 void
 309 gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 310                                   size_t relnum, off_t reloffset,
 311                                   const char* format, ...);
 312 #endif
 313
 314 #ifdef HAVE_TARGET_64_BIG
 315 template
 316 void
 317 gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 318                                  size_t relnum, off_t reloffset,
 319                                  const char* format, ...);
 320 #endif
 321
 322 #ifdef HAVE_TARGET_32_LITTLE
 323 template
 324 void
 325 gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 326                                     size_t relnum, off_t reloffset,
 327                                     const char* format, ...);
 328 #endif
 329
 330 #ifdef HAVE_TARGET_32_BIG
 331 template
 332 void
 333 gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 334                                    size_t relnum, off_t reloffset,
 335                                    const char* format, ...);
 336 #endif
 337
 338 #ifdef HAVE_TARGET_64_LITTLE
 339 template
 340 void
 341 gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 342                                     size_t relnum, off_t reloffset,
 343                                     const char* format, ...);
 344 #endif
 345
 346 #ifdef HAVE_TARGET_64_BIG
 347 template
 348 void
 349 gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 350                                    size_t relnum, off_t reloffset,
 351                                    const char* format, ...);
 352 #endif
 353
 354 #ifdef HAVE_TARGET_32_LITTLE
 355 template
 356 void
 357 gold_undefined_symbol_at_location<32, false>(
 358     const Symbol* sym,
 359     const Relocate_info<32, false>* relinfo,
 360     size_t relnum, off_t reloffset);
 361 #endif
 362
 363 #ifdef HAVE_TARGET_32_BIG
 364 template
 365 void
 366 gold_undefined_symbol_at_location<32, true>(
 367     const Symbol* sym,
 368     const Relocate_info<32, true>* relinfo,
 369     size_t relnum, off_t reloffset);
 370 #endif
 371
 372 #ifdef HAVE_TARGET_64_LITTLE
 373 template
 374 void
 375 gold_undefined_symbol_at_location<64, false>(
 376     const Symbol* sym,
 377     const Relocate_info<64, false>* relinfo,
 378     size_t relnum, off_t reloffset);
 379 #endif
 380
 381 #ifdef HAVE_TARGET_64_BIG
 382 template
 383 void
 384 gold_undefined_symbol_at_location<64, true>(
 385     const Symbol* sym,
 386     const Relocate_info<64, true>* relinfo,
 387     size_t relnum, off_t reloffset);
 388 #endif
 389
 390 } // End namespace gold.