| 1 | /* ldmisc.c |
| 2 | Copyright (C) 1991 Free Software Foundation, Inc. |
| 3 | |
| 4 | Written by Steve Chamberlain of Cygnus Support. |
| 5 | |
| 6 | This file is part of GLD, the Gnu Linker. |
| 7 | |
| 8 | GLD 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 2, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | GLD 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 GLD; see the file COPYING. If not, write to |
| 20 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 21 | |
| 22 | #include "bfd.h" |
| 23 | #include "sysdep.h" |
| 24 | #include <varargs.h> |
| 25 | #include <demangle.h> |
| 26 | |
| 27 | #include "ld.h" |
| 28 | #include "ldmisc.h" |
| 29 | #include "ldexp.h" |
| 30 | #include "ldlang.h" |
| 31 | #include "ldlex.h" |
| 32 | #include "ldsym.h" |
| 33 | #include "ldmain.h" |
| 34 | #include "ldfile.h" |
| 35 | |
| 36 | /* VARARGS*/ |
| 37 | static void finfo (); |
| 38 | |
| 39 | /* |
| 40 | %% literal % |
| 41 | %F error is fatal |
| 42 | %P print program name |
| 43 | %S print script file and linenumber |
| 44 | %E current bfd error or errno |
| 45 | %I filename from a lang_input_statement_type |
| 46 | %B filename from a bfd |
| 47 | %T symbol table entry |
| 48 | %X no object output, fail return |
| 49 | %V hex bfd_vma |
| 50 | %v hex bfd_vma, no leading zeros |
| 51 | %C Clever filename:linenumber |
| 52 | %R info about a relent |
| 53 | %s arbitrary string, like printf |
| 54 | %d integer, like printf |
| 55 | */ |
| 56 | |
| 57 | static char * |
| 58 | demangle(string, remove_underscore) |
| 59 | char *string; |
| 60 | int remove_underscore; |
| 61 | { |
| 62 | char *res; |
| 63 | if (remove_underscore && output_bfd) |
| 64 | { |
| 65 | if (bfd_get_symbol_leading_char(output_bfd) == string[0]) |
| 66 | string++; |
| 67 | } |
| 68 | /* Note that there's a memory leak here, we keep buying memory |
| 69 | for demangled names, and never free. But if you have so many |
| 70 | errors that you run out of VM with the error messages, then |
| 71 | there's something up */ |
| 72 | res = cplus_demangle(string, DMGL_ANSI|DMGL_PARAMS); |
| 73 | return res ? res : string; |
| 74 | } |
| 75 | |
| 76 | static void |
| 77 | vfinfo(fp, fmt, arg) |
| 78 | FILE *fp; |
| 79 | char *fmt; |
| 80 | va_list arg; |
| 81 | { |
| 82 | boolean fatal = false; |
| 83 | |
| 84 | while (*fmt) |
| 85 | { |
| 86 | while (*fmt != '%' && *fmt != '\0') |
| 87 | { |
| 88 | putc(*fmt, fp); |
| 89 | fmt++; |
| 90 | } |
| 91 | |
| 92 | if (*fmt == '%') |
| 93 | { |
| 94 | fmt ++; |
| 95 | switch (*fmt++) |
| 96 | { |
| 97 | default: |
| 98 | fprintf(fp,"%%%c", fmt[-1]); |
| 99 | break; |
| 100 | |
| 101 | case '%': |
| 102 | /* literal % */ |
| 103 | putc('%', fp); |
| 104 | break; |
| 105 | |
| 106 | case 'X': |
| 107 | /* no object output, fail return */ |
| 108 | config.make_executable = false; |
| 109 | break; |
| 110 | |
| 111 | case 'V': |
| 112 | /* hex bfd_vma */ |
| 113 | { |
| 114 | bfd_vma value = va_arg(arg, bfd_vma); |
| 115 | fprintf_vma(fp, value); |
| 116 | } |
| 117 | break; |
| 118 | |
| 119 | case 'v': |
| 120 | /* hex bfd_vma, no leading zeros */ |
| 121 | { |
| 122 | char buf[100]; |
| 123 | char *p = buf; |
| 124 | bfd_vma value = va_arg (arg, bfd_vma); |
| 125 | sprintf_vma (p, value); |
| 126 | while (*p == '0') |
| 127 | p++; |
| 128 | if (!*p) |
| 129 | p--; |
| 130 | fputs (p, fp); |
| 131 | } |
| 132 | break; |
| 133 | |
| 134 | case 'T': |
| 135 | /* symbol table entry */ |
| 136 | { |
| 137 | asymbol *symbol = va_arg(arg, asymbol *); |
| 138 | if (symbol) |
| 139 | { |
| 140 | asection *section = symbol->section; |
| 141 | char *cplusname = demangle(symbol->name, 1); |
| 142 | CONST char *section_name = section->name; |
| 143 | if (section != &bfd_und_section) |
| 144 | { |
| 145 | fprintf(fp,"%s (%s)", cplusname, section_name); |
| 146 | } |
| 147 | else |
| 148 | { |
| 149 | fprintf(fp,"%s", cplusname); |
| 150 | } |
| 151 | } |
| 152 | else |
| 153 | { |
| 154 | fprintf(fp,"no symbol"); |
| 155 | } |
| 156 | } |
| 157 | break; |
| 158 | |
| 159 | case 'B': |
| 160 | /* filename from a bfd */ |
| 161 | { |
| 162 | bfd *abfd = va_arg(arg, bfd *); |
| 163 | if (abfd->my_archive) { |
| 164 | fprintf(fp,"%s(%s)", abfd->my_archive->filename, |
| 165 | abfd->filename); |
| 166 | } |
| 167 | else { |
| 168 | fprintf(fp,"%s", abfd->filename); |
| 169 | } |
| 170 | } |
| 171 | break; |
| 172 | |
| 173 | case 'F': |
| 174 | /* error is fatal */ |
| 175 | fatal = true; |
| 176 | break; |
| 177 | |
| 178 | case 'P': |
| 179 | /* print program name */ |
| 180 | fprintf(fp,"%s", program_name); |
| 181 | break; |
| 182 | |
| 183 | case 'E': |
| 184 | /* current bfd error or errno */ |
| 185 | fprintf(fp, bfd_errmsg(bfd_error)); |
| 186 | break; |
| 187 | |
| 188 | case 'I': |
| 189 | /* filename from a lang_input_statement_type */ |
| 190 | { |
| 191 | lang_input_statement_type *i = |
| 192 | va_arg(arg,lang_input_statement_type *); |
| 193 | |
| 194 | fprintf(fp,"%s", i->local_sym_name); |
| 195 | } |
| 196 | break; |
| 197 | |
| 198 | case 'S': |
| 199 | /* print script file and linenumber */ |
| 200 | { |
| 201 | if (ldfile_input_filename == (char *)NULL) { |
| 202 | fprintf(fp,"command line"); |
| 203 | } |
| 204 | else { |
| 205 | fprintf(fp,"%s:%u", ldfile_input_filename, lineno ); |
| 206 | } |
| 207 | } |
| 208 | break; |
| 209 | |
| 210 | case 'R': |
| 211 | /* Print all that's interesting about a relent */ |
| 212 | { |
| 213 | arelent *relent = va_arg(arg, arelent *); |
| 214 | |
| 215 | finfo (fp, "%s+0x%v (type %s)", |
| 216 | (*(relent->sym_ptr_ptr))->name, |
| 217 | relent->addend, |
| 218 | relent->howto->name); |
| 219 | } |
| 220 | break; |
| 221 | |
| 222 | case 'C': |
| 223 | /* Clever filename:linenumber with function name if possible, |
| 224 | or section name as a last resort */ |
| 225 | { |
| 226 | CONST char *filename; |
| 227 | CONST char *functionname; |
| 228 | char *cplus_name; |
| 229 | |
| 230 | unsigned int linenumber; |
| 231 | bfd *abfd = va_arg(arg, bfd *); |
| 232 | asection *section = va_arg(arg, asection *); |
| 233 | asymbol **symbols = va_arg(arg, asymbol **); |
| 234 | bfd_vma offset = va_arg(arg, bfd_vma); |
| 235 | |
| 236 | if (bfd_find_nearest_line(abfd, |
| 237 | section, |
| 238 | symbols, |
| 239 | offset, |
| 240 | &filename, |
| 241 | &functionname, |
| 242 | &linenumber)) |
| 243 | { |
| 244 | if (filename == (char *)NULL) |
| 245 | filename = abfd->filename; |
| 246 | if (functionname != (char *)NULL) |
| 247 | { |
| 248 | cplus_name = demangle(functionname, 1); |
| 249 | fprintf(fp,"%s:%u: %s", filename, linenumber, cplus_name); |
| 250 | } |
| 251 | |
| 252 | else if (linenumber != 0) |
| 253 | fprintf(fp,"%s:%u", filename, linenumber); |
| 254 | else |
| 255 | finfo (fp, "%s(%s+0x%v)", filename, section->name, offset); |
| 256 | |
| 257 | } |
| 258 | else |
| 259 | finfo (fp, "%s(%s+0x%v)", abfd->filename, section->name, offset); |
| 260 | } |
| 261 | break; |
| 262 | |
| 263 | case 's': |
| 264 | /* arbitrary string, like printf */ |
| 265 | fprintf(fp,"%s", va_arg(arg, char *)); |
| 266 | break; |
| 267 | |
| 268 | case 'd': |
| 269 | /* integer, like printf */ |
| 270 | fprintf(fp,"%d", va_arg(arg, int)); |
| 271 | break; |
| 272 | } |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | if (fatal == true) |
| 277 | { |
| 278 | if (output_filename) |
| 279 | { |
| 280 | if (output_bfd && output_bfd->iostream) |
| 281 | fclose((FILE *)(output_bfd->iostream)); |
| 282 | if (delete_output_file_on_failure) |
| 283 | unlink (output_filename); |
| 284 | } |
| 285 | exit(1); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | /* Format info message and print on stdout. */ |
| 290 | |
| 291 | /* (You would think this should be called just "info", but then you would |
| 292 | hosed by LynxOS, which defines that name in its libc.) */ |
| 293 | |
| 294 | void info_msg(va_alist) |
| 295 | va_dcl |
| 296 | { |
| 297 | char *fmt; |
| 298 | va_list arg; |
| 299 | va_start(arg); |
| 300 | fmt = va_arg(arg, char *); |
| 301 | vfinfo(stdout, fmt, arg); |
| 302 | va_end(arg); |
| 303 | } |
| 304 | |
| 305 | /* ('e' for error.) Format info message and print on stderr. */ |
| 306 | |
| 307 | void einfo(va_alist) |
| 308 | va_dcl |
| 309 | { |
| 310 | char *fmt; |
| 311 | va_list arg; |
| 312 | va_start(arg); |
| 313 | fmt = va_arg(arg, char *); |
| 314 | vfinfo(stderr, fmt, arg); |
| 315 | va_end(arg); |
| 316 | } |
| 317 | |
| 318 | /* Warn about a symbol NEWSYM being multiply defined with another symbol OLDSYM. |
| 319 | MESSAGE1 and MESSAGE2 should look something like: |
| 320 | "%C: warning: multiple commons of `%s'\n" |
| 321 | "%C: warning: previous common here\n" */ |
| 322 | |
| 323 | void |
| 324 | multiple_warn (message1, newsym, message2, oldsym) |
| 325 | char *message1; |
| 326 | asymbol *newsym; |
| 327 | char *message2; |
| 328 | asymbol *oldsym; |
| 329 | { |
| 330 | lang_input_statement_type *stat; |
| 331 | asymbol **stat_symbols; |
| 332 | |
| 333 | stat = (lang_input_statement_type *) bfd_asymbol_bfd (newsym)->usrdata; |
| 334 | stat_symbols = stat ? stat->asymbols : 0; |
| 335 | |
| 336 | einfo (message1, |
| 337 | bfd_asymbol_bfd (newsym), newsym->section, stat_symbols, newsym->value, |
| 338 | demangle (newsym->name, 1)); |
| 339 | |
| 340 | stat = (lang_input_statement_type *) bfd_asymbol_bfd (oldsym)->usrdata; |
| 341 | stat_symbols = stat ? stat->asymbols : 0; |
| 342 | |
| 343 | einfo (message2, |
| 344 | bfd_asymbol_bfd (oldsym), oldsym->section, stat_symbols, oldsym->value); |
| 345 | } |
| 346 | |
| 347 | void |
| 348 | info_assert(file, line) |
| 349 | char *file; |
| 350 | unsigned int line; |
| 351 | { |
| 352 | einfo("%F%P: internal error %s %d\n", file,line); |
| 353 | } |
| 354 | |
| 355 | /* Return a newly-allocated string |
| 356 | whose contents concatenate those of S1, S2, S3. */ |
| 357 | |
| 358 | char * |
| 359 | concat (s1, s2, s3) |
| 360 | CONST char *s1; |
| 361 | CONST char *s2; |
| 362 | CONST char *s3; |
| 363 | { |
| 364 | size_t len1 = strlen (s1); |
| 365 | size_t len2 = strlen (s2); |
| 366 | size_t len3 = strlen (s3); |
| 367 | char *result = ldmalloc (len1 + len2 + len3 + 1); |
| 368 | |
| 369 | if (len1 != 0) |
| 370 | memcpy(result, s1, len1); |
| 371 | if (len2 != 0) |
| 372 | memcpy(result+len1, s2, len2); |
| 373 | if (len3 != 0) |
| 374 | memcpy(result+len1+len2, s2, len3); |
| 375 | *(result + len1 + len2 + len3) = 0; |
| 376 | |
| 377 | return result; |
| 378 | } |
| 379 | |
| 380 | |
| 381 | PTR |
| 382 | ldmalloc (size) |
| 383 | size_t size; |
| 384 | { |
| 385 | PTR result = malloc ((int)size); |
| 386 | |
| 387 | if (result == (char *)NULL && size != 0) |
| 388 | einfo("%F%P: virtual memory exhausted\n"); |
| 389 | |
| 390 | return result; |
| 391 | } |
| 392 | |
| 393 | PTR |
| 394 | xmalloc (size) |
| 395 | int size; |
| 396 | { |
| 397 | return ldmalloc(size); |
| 398 | } |
| 399 | |
| 400 | |
| 401 | PTR |
| 402 | ldrealloc (ptr, size) |
| 403 | PTR ptr; |
| 404 | size_t size; |
| 405 | { |
| 406 | PTR result = realloc (ptr, (int)size); |
| 407 | |
| 408 | if (result == (char *)NULL && size != 0) |
| 409 | einfo("%F%P: virtual memory exhausted\n"); |
| 410 | |
| 411 | return result; |
| 412 | } |
| 413 | |
| 414 | PTR |
| 415 | xrealloc (ptr, size) |
| 416 | PTR ptr; |
| 417 | size_t size; |
| 418 | { |
| 419 | return ldrealloc(ptr, size); |
| 420 | } |
| 421 | |
| 422 | |
| 423 | char * |
| 424 | buystring (x) |
| 425 | CONST char *CONST x; |
| 426 | { |
| 427 | size_t l = strlen(x)+1; |
| 428 | char *r = ldmalloc(l); |
| 429 | memcpy(r, x,l); |
| 430 | return r; |
| 431 | } |
| 432 | |
| 433 | |
| 434 | /* ('m' for map) Format info message and print on map. */ |
| 435 | |
| 436 | void minfo(va_alist) |
| 437 | va_dcl |
| 438 | { |
| 439 | char *fmt; |
| 440 | va_list arg; |
| 441 | va_start(arg); |
| 442 | fmt = va_arg(arg, char *); |
| 443 | vfinfo(config.map_file, fmt, arg); |
| 444 | va_end(arg); |
| 445 | } |
| 446 | |
| 447 | |
| 448 | static void |
| 449 | finfo (va_alist) |
| 450 | va_dcl |
| 451 | { |
| 452 | char *fmt; |
| 453 | FILE *file; |
| 454 | va_list arg; |
| 455 | va_start (arg); |
| 456 | file = va_arg (arg, FILE *); |
| 457 | fmt = va_arg (arg, char *); |
| 458 | vfinfo (file, fmt, arg); |
| 459 | va_end (arg); |
| 460 | } |
| 461 | |
| 462 | |
| 463 | |
| 464 | /*---------------------------------------------------------------------- |
| 465 | Functions to print the link map |
| 466 | */ |
| 467 | |
| 468 | void |
| 469 | print_space () |
| 470 | { |
| 471 | fprintf(config.map_file, " "); |
| 472 | } |
| 473 | void |
| 474 | print_nl () |
| 475 | { |
| 476 | fprintf(config.map_file, "\n"); |
| 477 | } |
| 478 | void |
| 479 | print_address (value) |
| 480 | bfd_vma value; |
| 481 | { |
| 482 | fprintf_vma(config.map_file, value); |
| 483 | } |