| 1 | /* ldmisc.c |
| 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 3 | 2000, 2002 |
| 4 | Free Software Foundation, Inc. |
| 5 | Written by Steve Chamberlain of Cygnus Support. |
| 6 | |
| 7 | This file is part of GLD, the Gnu Linker. |
| 8 | |
| 9 | GLD is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2, or (at your option) |
| 12 | any later version. |
| 13 | |
| 14 | GLD is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with GLD; see the file COPYING. If not, write to the Free |
| 21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 22 | 02111-1307, USA. */ |
| 23 | |
| 24 | #include "bfd.h" |
| 25 | #include "sysdep.h" |
| 26 | #include "libiberty.h" |
| 27 | #include "demangle.h" |
| 28 | |
| 29 | #ifdef ANSI_PROTOTYPES |
| 30 | #include <stdarg.h> |
| 31 | #else |
| 32 | #include <varargs.h> |
| 33 | #endif |
| 34 | |
| 35 | #include "ld.h" |
| 36 | #include "ldmisc.h" |
| 37 | #include "ldexp.h" |
| 38 | #include "ldlang.h" |
| 39 | #include "ldgram.h" |
| 40 | #include "ldlex.h" |
| 41 | #include "ldmain.h" |
| 42 | #include "ldfile.h" |
| 43 | |
| 44 | static void vfinfo PARAMS ((FILE *, const char *, va_list)); |
| 45 | |
| 46 | /* |
| 47 | %% literal % |
| 48 | %F error is fatal |
| 49 | %P print program name |
| 50 | %S print script file and linenumber |
| 51 | %E current bfd error or errno |
| 52 | %I filename from a lang_input_statement_type |
| 53 | %B filename from a bfd |
| 54 | %T symbol name |
| 55 | %X no object output, fail return |
| 56 | %V hex bfd_vma |
| 57 | %v hex bfd_vma, no leading zeros |
| 58 | %W hex bfd_vma with 0x with no leading zeros taking up 8 spaces |
| 59 | %C clever filename:linenumber with function |
| 60 | %D like %C, but no function name |
| 61 | %G like %D, but only function name |
| 62 | %R info about a relent |
| 63 | %s arbitrary string, like printf |
| 64 | %d integer, like printf |
| 65 | %u integer, like printf |
| 66 | */ |
| 67 | |
| 68 | static void |
| 69 | vfinfo (fp, fmt, arg) |
| 70 | FILE *fp; |
| 71 | const char *fmt; |
| 72 | va_list arg; |
| 73 | { |
| 74 | boolean fatal = false; |
| 75 | |
| 76 | while (*fmt != '\0') |
| 77 | { |
| 78 | while (*fmt != '%' && *fmt != '\0') |
| 79 | { |
| 80 | putc (*fmt, fp); |
| 81 | fmt++; |
| 82 | } |
| 83 | |
| 84 | if (*fmt == '%') |
| 85 | { |
| 86 | fmt++; |
| 87 | switch (*fmt++) |
| 88 | { |
| 89 | default: |
| 90 | fprintf (fp, "%%%c", fmt[-1]); |
| 91 | break; |
| 92 | |
| 93 | case '%': |
| 94 | /* literal % */ |
| 95 | putc ('%', fp); |
| 96 | break; |
| 97 | |
| 98 | case 'X': |
| 99 | /* no object output, fail return */ |
| 100 | config.make_executable = false; |
| 101 | break; |
| 102 | |
| 103 | case 'V': |
| 104 | /* hex bfd_vma */ |
| 105 | { |
| 106 | bfd_vma value = va_arg (arg, bfd_vma); |
| 107 | fprintf_vma (fp, value); |
| 108 | } |
| 109 | break; |
| 110 | |
| 111 | case 'v': |
| 112 | /* hex bfd_vma, no leading zeros */ |
| 113 | { |
| 114 | char buf[100]; |
| 115 | char *p = buf; |
| 116 | bfd_vma value = va_arg (arg, bfd_vma); |
| 117 | sprintf_vma (p, value); |
| 118 | while (*p == '0') |
| 119 | p++; |
| 120 | if (!*p) |
| 121 | p--; |
| 122 | fputs (p, fp); |
| 123 | } |
| 124 | break; |
| 125 | |
| 126 | case 'W': |
| 127 | /* hex bfd_vma with 0x with no leading zeroes taking up |
| 128 | 8 spaces. */ |
| 129 | { |
| 130 | char buf[100]; |
| 131 | bfd_vma value; |
| 132 | char *p; |
| 133 | int len; |
| 134 | |
| 135 | value = va_arg (arg, bfd_vma); |
| 136 | sprintf_vma (buf, value); |
| 137 | for (p = buf; *p == '0'; ++p) |
| 138 | ; |
| 139 | if (*p == '\0') |
| 140 | --p; |
| 141 | len = strlen (p); |
| 142 | while (len < 8) |
| 143 | { |
| 144 | putc (' ', fp); |
| 145 | ++len; |
| 146 | } |
| 147 | fprintf (fp, "0x%s", p); |
| 148 | } |
| 149 | break; |
| 150 | |
| 151 | case 'T': |
| 152 | /* Symbol name. */ |
| 153 | { |
| 154 | const char *name = va_arg (arg, const char *); |
| 155 | |
| 156 | if (name == (const char *) NULL || *name == 0) |
| 157 | fprintf (fp, _("no symbol")); |
| 158 | else if (! demangling) |
| 159 | fprintf (fp, "%s", name); |
| 160 | else |
| 161 | { |
| 162 | char *demangled; |
| 163 | |
| 164 | demangled = demangle (name); |
| 165 | fprintf (fp, "%s", demangled); |
| 166 | free (demangled); |
| 167 | } |
| 168 | } |
| 169 | break; |
| 170 | |
| 171 | case 'B': |
| 172 | /* filename from a bfd */ |
| 173 | { |
| 174 | bfd *abfd = va_arg (arg, bfd *); |
| 175 | if (abfd->my_archive) |
| 176 | fprintf (fp, "%s(%s)", abfd->my_archive->filename, |
| 177 | abfd->filename); |
| 178 | else |
| 179 | fprintf (fp, "%s", abfd->filename); |
| 180 | } |
| 181 | break; |
| 182 | |
| 183 | case 'F': |
| 184 | /* Error is fatal. */ |
| 185 | fatal = true; |
| 186 | break; |
| 187 | |
| 188 | case 'P': |
| 189 | /* Print program name. */ |
| 190 | fprintf (fp, "%s", program_name); |
| 191 | break; |
| 192 | |
| 193 | case 'E': |
| 194 | /* current bfd error or errno */ |
| 195 | fprintf (fp, "%s", bfd_errmsg (bfd_get_error ())); |
| 196 | break; |
| 197 | |
| 198 | case 'I': |
| 199 | /* filename from a lang_input_statement_type */ |
| 200 | { |
| 201 | lang_input_statement_type *i; |
| 202 | |
| 203 | i = va_arg (arg, lang_input_statement_type *); |
| 204 | if (bfd_my_archive (i->the_bfd) != NULL) |
| 205 | fprintf (fp, "(%s)", |
| 206 | bfd_get_filename (bfd_my_archive (i->the_bfd))); |
| 207 | fprintf (fp, "%s", i->local_sym_name); |
| 208 | if (bfd_my_archive (i->the_bfd) == NULL |
| 209 | && strcmp (i->local_sym_name, i->filename) != 0) |
| 210 | fprintf (fp, " (%s)", i->filename); |
| 211 | } |
| 212 | break; |
| 213 | |
| 214 | case 'S': |
| 215 | /* Print script file and linenumber. */ |
| 216 | if (parsing_defsym) |
| 217 | fprintf (fp, "--defsym %s", lex_string); |
| 218 | else if (ldfile_input_filename != NULL) |
| 219 | fprintf (fp, "%s:%u", ldfile_input_filename, lineno); |
| 220 | else |
| 221 | fprintf (fp, _("built in linker script:%u"), lineno); |
| 222 | break; |
| 223 | |
| 224 | case 'R': |
| 225 | /* Print all that's interesting about a relent. */ |
| 226 | { |
| 227 | arelent *relent = va_arg (arg, arelent *); |
| 228 | |
| 229 | lfinfo (fp, "%s+0x%v (type %s)", |
| 230 | (*(relent->sym_ptr_ptr))->name, |
| 231 | relent->addend, |
| 232 | relent->howto->name); |
| 233 | } |
| 234 | break; |
| 235 | |
| 236 | case 'C': |
| 237 | case 'D': |
| 238 | case 'G': |
| 239 | /* Clever filename:linenumber with function name if possible, |
| 240 | or section name as a last resort. The arguments are a BFD, |
| 241 | a section, and an offset. */ |
| 242 | { |
| 243 | static bfd *last_bfd; |
| 244 | static char *last_file = NULL; |
| 245 | static char *last_function = NULL; |
| 246 | bfd *abfd; |
| 247 | asection *section; |
| 248 | bfd_vma offset; |
| 249 | lang_input_statement_type *entry; |
| 250 | asymbol **asymbols; |
| 251 | const char *filename; |
| 252 | const char *functionname; |
| 253 | unsigned int linenumber; |
| 254 | boolean discard_last; |
| 255 | |
| 256 | abfd = va_arg (arg, bfd *); |
| 257 | section = va_arg (arg, asection *); |
| 258 | offset = va_arg (arg, bfd_vma); |
| 259 | |
| 260 | entry = (lang_input_statement_type *) abfd->usrdata; |
| 261 | if (entry != (lang_input_statement_type *) NULL |
| 262 | && entry->asymbols != (asymbol **) NULL) |
| 263 | asymbols = entry->asymbols; |
| 264 | else |
| 265 | { |
| 266 | long symsize; |
| 267 | long symbol_count; |
| 268 | |
| 269 | symsize = bfd_get_symtab_upper_bound (abfd); |
| 270 | if (symsize < 0) |
| 271 | einfo (_("%B%F: could not read symbols\n"), abfd); |
| 272 | asymbols = (asymbol **) xmalloc (symsize); |
| 273 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
| 274 | if (symbol_count < 0) |
| 275 | einfo (_("%B%F: could not read symbols\n"), abfd); |
| 276 | if (entry != (lang_input_statement_type *) NULL) |
| 277 | { |
| 278 | entry->asymbols = asymbols; |
| 279 | entry->symbol_count = symbol_count; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | discard_last = true; |
| 284 | if (bfd_find_nearest_line (abfd, section, asymbols, offset, |
| 285 | &filename, &functionname, |
| 286 | &linenumber)) |
| 287 | { |
| 288 | if (functionname != NULL && fmt[-1] == 'G') |
| 289 | { |
| 290 | lfinfo (fp, "%B:", abfd); |
| 291 | if (filename != NULL |
| 292 | && strcmp (filename, bfd_get_filename (abfd)) != 0) |
| 293 | fprintf (fp, "%s:", filename); |
| 294 | lfinfo (fp, "%T", functionname); |
| 295 | } |
| 296 | else if (functionname != NULL && fmt[-1] == 'C') |
| 297 | { |
| 298 | if (filename == (char *) NULL) |
| 299 | filename = abfd->filename; |
| 300 | |
| 301 | if (last_bfd == NULL |
| 302 | || last_file == NULL |
| 303 | || last_function == NULL |
| 304 | || last_bfd != abfd |
| 305 | || strcmp (last_file, filename) != 0 |
| 306 | || strcmp (last_function, functionname) != 0) |
| 307 | { |
| 308 | /* We use abfd->filename in this initial line, |
| 309 | in case filename is a .h file or something |
| 310 | similarly unhelpful. */ |
| 311 | lfinfo (fp, _("%B: In function `%T':\n"), |
| 312 | abfd, functionname); |
| 313 | |
| 314 | last_bfd = abfd; |
| 315 | if (last_file != NULL) |
| 316 | free (last_file); |
| 317 | last_file = xstrdup (filename); |
| 318 | if (last_function != NULL) |
| 319 | free (last_function); |
| 320 | last_function = xstrdup (functionname); |
| 321 | } |
| 322 | discard_last = false; |
| 323 | if (linenumber != 0) |
| 324 | fprintf (fp, "%s:%u", filename, linenumber); |
| 325 | else |
| 326 | lfinfo (fp, "%s(%s+0x%v)", filename, section->name, |
| 327 | offset); |
| 328 | } |
| 329 | else if (filename == NULL |
| 330 | || strcmp (filename, abfd->filename) == 0) |
| 331 | { |
| 332 | lfinfo (fp, "%B(%s+0x%v)", abfd, section->name, |
| 333 | offset); |
| 334 | if (linenumber != 0) |
| 335 | lfinfo (fp, ":%u", linenumber); |
| 336 | } |
| 337 | else if (linenumber != 0) |
| 338 | lfinfo (fp, "%B:%s:%u", abfd, filename, linenumber); |
| 339 | else |
| 340 | lfinfo (fp, "%B(%s+0x%v):%s", abfd, section->name, |
| 341 | offset, filename); |
| 342 | } |
| 343 | else |
| 344 | lfinfo (fp, "%B(%s+0x%v)", abfd, section->name, offset); |
| 345 | |
| 346 | if (discard_last) |
| 347 | { |
| 348 | last_bfd = NULL; |
| 349 | if (last_file != NULL) |
| 350 | { |
| 351 | free (last_file); |
| 352 | last_file = NULL; |
| 353 | } |
| 354 | if (last_function != NULL) |
| 355 | { |
| 356 | free (last_function); |
| 357 | last_function = NULL; |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | break; |
| 362 | |
| 363 | case 's': |
| 364 | /* arbitrary string, like printf */ |
| 365 | fprintf (fp, "%s", va_arg (arg, char *)); |
| 366 | break; |
| 367 | |
| 368 | case 'd': |
| 369 | /* integer, like printf */ |
| 370 | fprintf (fp, "%d", va_arg (arg, int)); |
| 371 | break; |
| 372 | |
| 373 | case 'u': |
| 374 | /* unsigned integer, like printf */ |
| 375 | fprintf (fp, "%u", va_arg (arg, unsigned int)); |
| 376 | break; |
| 377 | } |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | if (config.fatal_warnings) |
| 382 | config.make_executable = false; |
| 383 | |
| 384 | if (fatal == true) |
| 385 | xexit (1); |
| 386 | } |
| 387 | |
| 388 | /* Wrapper around cplus_demangle. Strips leading underscores and |
| 389 | other such chars that would otherwise confuse the demangler. */ |
| 390 | |
| 391 | char * |
| 392 | demangle (name) |
| 393 | const char *name; |
| 394 | { |
| 395 | char *res; |
| 396 | const char *p; |
| 397 | |
| 398 | if (output_bfd != NULL |
| 399 | && bfd_get_symbol_leading_char (output_bfd) == name[0]) |
| 400 | ++name; |
| 401 | |
| 402 | /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF |
| 403 | or the MS PE format. These formats have a number of leading '.'s |
| 404 | on at least some symbols, so we remove all dots to avoid |
| 405 | confusing the demangler. */ |
| 406 | p = name; |
| 407 | while (*p == '.') |
| 408 | ++p; |
| 409 | |
| 410 | res = cplus_demangle (p, DMGL_ANSI | DMGL_PARAMS); |
| 411 | if (res) |
| 412 | { |
| 413 | size_t dots = p - name; |
| 414 | |
| 415 | /* Now put back any stripped dots. */ |
| 416 | if (dots != 0) |
| 417 | { |
| 418 | size_t len = strlen (res) + 1; |
| 419 | char *add_dots = xmalloc (len + dots); |
| 420 | |
| 421 | memcpy (add_dots, name, dots); |
| 422 | memcpy (add_dots + dots, res, len); |
| 423 | free (res); |
| 424 | res = add_dots; |
| 425 | } |
| 426 | return res; |
| 427 | } |
| 428 | return xstrdup (name); |
| 429 | } |
| 430 | |
| 431 | /* Format info message and print on stdout. */ |
| 432 | |
| 433 | /* (You would think this should be called just "info", but then you |
| 434 | would hosed by LynxOS, which defines that name in its libc.) */ |
| 435 | |
| 436 | void |
| 437 | info_msg VPARAMS ((const char *fmt, ...)) |
| 438 | { |
| 439 | VA_OPEN (arg, fmt); |
| 440 | VA_FIXEDARG (arg, const char *, fmt); |
| 441 | |
| 442 | vfinfo (stdout, fmt, arg); |
| 443 | VA_CLOSE (arg); |
| 444 | } |
| 445 | |
| 446 | /* ('e' for error.) Format info message and print on stderr. */ |
| 447 | |
| 448 | void |
| 449 | einfo VPARAMS ((const char *fmt, ...)) |
| 450 | { |
| 451 | VA_OPEN (arg, fmt); |
| 452 | VA_FIXEDARG (arg, const char *, fmt); |
| 453 | |
| 454 | vfinfo (stderr, fmt, arg); |
| 455 | VA_CLOSE (arg); |
| 456 | } |
| 457 | |
| 458 | void |
| 459 | info_assert (file, line) |
| 460 | const char *file; |
| 461 | unsigned int line; |
| 462 | { |
| 463 | einfo (_("%F%P: internal error %s %d\n"), file, line); |
| 464 | } |
| 465 | |
| 466 | /* ('m' for map) Format info message and print on map. */ |
| 467 | |
| 468 | void |
| 469 | minfo VPARAMS ((const char *fmt, ...)) |
| 470 | { |
| 471 | VA_OPEN (arg, fmt); |
| 472 | VA_FIXEDARG (arg, const char *, fmt); |
| 473 | |
| 474 | vfinfo (config.map_file, fmt, arg); |
| 475 | VA_CLOSE (arg); |
| 476 | } |
| 477 | |
| 478 | void |
| 479 | lfinfo VPARAMS ((FILE *file, const char *fmt, ...)) |
| 480 | { |
| 481 | VA_OPEN (arg, fmt); |
| 482 | VA_FIXEDARG (arg, FILE *, file); |
| 483 | VA_FIXEDARG (arg, const char *, fmt); |
| 484 | |
| 485 | vfinfo (file, fmt, arg); |
| 486 | VA_CLOSE (arg); |
| 487 | } |
| 488 | \f |
| 489 | /* Functions to print the link map. */ |
| 490 | |
| 491 | void |
| 492 | print_space () |
| 493 | { |
| 494 | fprintf (config.map_file, " "); |
| 495 | } |
| 496 | |
| 497 | void |
| 498 | print_nl () |
| 499 | { |
| 500 | fprintf (config.map_file, "\n"); |
| 501 | } |
| 502 | |
| 503 | /* A more or less friendly abort message. In ld.h abort is defined to |
| 504 | call this function. */ |
| 505 | |
| 506 | void |
| 507 | ld_abort (file, line, fn) |
| 508 | const char *file; |
| 509 | int line; |
| 510 | const char *fn; |
| 511 | { |
| 512 | if (fn != NULL) |
| 513 | einfo (_("%P: internal error: aborting at %s line %d in %s\n"), |
| 514 | file, line, fn); |
| 515 | else |
| 516 | einfo (_("%P: internal error: aborting at %s line %d\n"), |
| 517 | file, line); |
| 518 | einfo (_("%P%F: please report this bug\n")); |
| 519 | xexit (1); |
| 520 | } |