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   fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
 162           this->program_name_, relinfo->location(relnum, reloffset).c_str(),
 163           sym->demangled_name().c_str());
 164 }
 165
 166 // Issue a debugging message.
 167
 168 void
 169 Errors::debug(const char* format, ...)
 170 {
 171   fprintf(stderr, _("%s: "), this->program_name_);
 172
 173   va_list args;
 174   va_start(args, format);
 175   vfprintf(stderr, format, args);
 176   va_end(args);
 177
 178   fputc('\n', stderr);
 179 }
 180
 181 // The functions which the rest of the code actually calls.
 182
 183 // Report a fatal error.
 184
 185 void
 186 gold_fatal(const char* format, ...)
 187 {
 188   va_list args;
 189   va_start(args, format);
 190   parameters->errors()->fatal(format, args);
 191   va_end(args);
 192 }
 193
 194 // Report an error.
 195
 196 void
 197 gold_error(const char* format, ...)
 198 {
 199   va_list args;
 200   va_start(args, format);
 201   parameters->errors()->error(format, args);
 202   va_end(args);
 203 }
 204
 205 // Report a warning.
 206
 207 void
 208 gold_warning(const char* format, ...)
 209 {
 210   va_list args;
 211   va_start(args, format);
 212   parameters->errors()->warning(format, args);
 213   va_end(args);
 214 }
 215
 216 // Report an error at a location.
 217
 218 template<int size, bool big_endian>
 219 void
 220 gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
 221                        size_t relnum, off_t reloffset,
 222                        const char* format, ...)
 223 {
 224   va_list args;
 225   va_start(args, format);
 226   parameters->errors()->error_at_location(relinfo, relnum, reloffset,
 227                                           format, args);
 228   va_end(args);
 229 }
 230
 231 // Report a warning at a location.
 232
 233 template<int size, bool big_endian>
 234 void
 235 gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
 236                          size_t relnum, off_t reloffset,
 237                          const char* format, ...)
 238 {
 239   va_list args;
 240   va_start(args, format);
 241   parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
 242                                             format, args);
 243   va_end(args);
 244 }
 245
 246 // Report an undefined symbol.
 247
 248 template<int size, bool big_endian>
 249 void
 250 gold_undefined_symbol(const Symbol* sym,
 251                       const Relocate_info<size, big_endian>* relinfo,
 252                       size_t relnum, off_t reloffset)
 253 {
 254   parameters->errors()->undefined_symbol(sym, relinfo, relnum, reloffset);
 255 }
 256
 257 #ifdef HAVE_TARGET_32_LITTLE
 258 template
 259 void
 260 gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 261                                   size_t relnum, off_t reloffset,
 262                                   const char* format, ...);
 263 #endif
 264
 265 #ifdef HAVE_TARGET_32_BIG
 266 template
 267 void
 268 gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 269                                  size_t relnum, off_t reloffset,
 270                                  const char* format, ...);
 271 #endif
 272
 273 #ifdef HAVE_TARGET_64_LITTLE
 274 template
 275 void
 276 gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 277                                   size_t relnum, off_t reloffset,
 278                                   const char* format, ...);
 279 #endif
 280
 281 #ifdef HAVE_TARGET_64_BIG
 282 template
 283 void
 284 gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 285                                  size_t relnum, off_t reloffset,
 286                                  const char* format, ...);
 287 #endif
 288
 289 #ifdef HAVE_TARGET_32_LITTLE
 290 template
 291 void
 292 gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
 293                                     size_t relnum, off_t reloffset,
 294                                     const char* format, ...);
 295 #endif
 296
 297 #ifdef HAVE_TARGET_32_BIG
 298 template
 299 void
 300 gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
 301                                    size_t relnum, off_t reloffset,
 302                                    const char* format, ...);
 303 #endif
 304
 305 #ifdef HAVE_TARGET_64_LITTLE
 306 template
 307 void
 308 gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
 309                                     size_t relnum, off_t reloffset,
 310                                     const char* format, ...);
 311 #endif
 312
 313 #ifdef HAVE_TARGET_64_BIG
 314 template
 315 void
 316 gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
 317                                    size_t relnum, off_t reloffset,
 318                                    const char* format, ...);
 319 #endif
 320
 321 #ifdef HAVE_TARGET_32_LITTLE
 322 template
 323 void
 324 gold_undefined_symbol<32, false>(const Symbol* sym,
 325                                  const Relocate_info<32, false>* relinfo,
 326                                  size_t relnum, off_t reloffset);
 327 #endif
 328
 329 #ifdef HAVE_TARGET_32_BIG
 330 template
 331 void
 332 gold_undefined_symbol<32, true>(const Symbol* sym,
 333                                 const Relocate_info<32, true>* relinfo,
 334                                 size_t relnum, off_t reloffset);
 335 #endif
 336
 337 #ifdef HAVE_TARGET_64_LITTLE
 338 template
 339 void
 340 gold_undefined_symbol<64, false>(const Symbol* sym,
 341                                  const Relocate_info<64, false>* relinfo,
 342                                  size_t relnum, off_t reloffset);
 343 #endif
 344
 345 #ifdef HAVE_TARGET_64_BIG
 346 template
 347 void
 348 gold_undefined_symbol<64, true>(const Symbol* sym,
 349                                 const Relocate_info<64, true>* relinfo,
 350                                 size_t relnum, off_t reloffset);
 351 #endif
 352
 353 } // End namespace gold.