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