| 1 | #include "libiberty.h" |
| 2 | #include "gprof.h" |
| 3 | #include "core.h" |
| 4 | #include "symtab.h" |
| 5 | |
| 6 | #ifndef MIN_INSN_SIZE |
| 7 | /* If not defined in MACHINE_H, assume smallest instruction is 1 byte |
| 8 | long. THis is safe but may be needlessly slow on machines where |
| 9 | all instructions are longer. */ |
| 10 | #define MIN_INSN_SIZE 1 |
| 11 | #endif |
| 12 | |
| 13 | bfd *core_bfd; |
| 14 | int core_num_syms; |
| 15 | asymbol **core_syms; |
| 16 | asection *core_text_sect; |
| 17 | PTR core_text_space; |
| 18 | |
| 19 | /* For mapping symbols to specific .o files during file ordering. */ |
| 20 | struct function_map { |
| 21 | char *function_name; |
| 22 | char *file_name; |
| 23 | }; |
| 24 | |
| 25 | struct function_map *symbol_map; |
| 26 | int symbol_map_count; |
| 27 | |
| 28 | static void |
| 29 | DEFUN (read_function_mappings, (filename), const char *filename) |
| 30 | { |
| 31 | FILE *file = fopen (filename, "r"); |
| 32 | char dummy[1024]; |
| 33 | int count = 0; |
| 34 | |
| 35 | if (!file) |
| 36 | { |
| 37 | fprintf (stderr, "%s: could not open %s.\n", whoami, filename); |
| 38 | done (1); |
| 39 | } |
| 40 | |
| 41 | /* First parse the mapping file so we know how big we need to |
| 42 | make our tables. We also do some sanity checks at this |
| 43 | time. */ |
| 44 | while (!feof (file)) |
| 45 | { |
| 46 | int matches; |
| 47 | |
| 48 | matches = fscanf (file, "%[^\n:]", dummy); |
| 49 | if (!matches) |
| 50 | { |
| 51 | fprintf (stderr, "%s: unable to parse mapping file %s.\n", |
| 52 | whoami, filename); |
| 53 | done (1); |
| 54 | } |
| 55 | |
| 56 | /* Just skip messages about files with no symbols. */ |
| 57 | if (!strncmp (dummy, "No symbols in ", 14)) |
| 58 | { |
| 59 | fscanf (file, "\n"); |
| 60 | continue; |
| 61 | } |
| 62 | |
| 63 | /* Don't care what else is on this line at this point. */ |
| 64 | fscanf (file, "%[^\n]\n", dummy); |
| 65 | count++; |
| 66 | } |
| 67 | |
| 68 | /* Now we know how big we need to make our table. */ |
| 69 | symbol_map = ((struct function_map *) |
| 70 | xmalloc (count * sizeof (struct function_map))); |
| 71 | |
| 72 | /* Rewind the input file so we can read it again. */ |
| 73 | rewind (file); |
| 74 | |
| 75 | /* Read each entry and put it into the table. */ |
| 76 | count = 0; |
| 77 | while (!feof (file)) |
| 78 | { |
| 79 | int matches; |
| 80 | char *tmp; |
| 81 | |
| 82 | matches = fscanf (file, "%[^\n:]", dummy); |
| 83 | if (!matches) |
| 84 | { |
| 85 | fprintf (stderr, "%s: unable to parse mapping file %s.\n", |
| 86 | whoami, filename); |
| 87 | done (1); |
| 88 | } |
| 89 | |
| 90 | /* Just skip messages about files with no symbols. */ |
| 91 | if (!strncmp (dummy, "No symbols in ", 14)) |
| 92 | { |
| 93 | fscanf (file, "\n"); |
| 94 | continue; |
| 95 | } |
| 96 | |
| 97 | /* dummy has the filename, go ahead and copy it. */ |
| 98 | symbol_map[count].file_name = xmalloc (strlen (dummy) + 1); |
| 99 | strcpy (symbol_map[count].file_name, dummy); |
| 100 | |
| 101 | /* Now we need the function name. */ |
| 102 | fscanf (file, "%[^\n]\n", dummy); |
| 103 | tmp = strrchr (dummy, ' ') + 1; |
| 104 | symbol_map[count].function_name = xmalloc (strlen (tmp) + 1); |
| 105 | strcpy (symbol_map[count].function_name, tmp); |
| 106 | count++; |
| 107 | } |
| 108 | |
| 109 | /* Record the size of the map table for future reference. */ |
| 110 | symbol_map_count = count; |
| 111 | } |
| 112 | |
| 113 | void |
| 114 | DEFUN (core_init, (a_out_name), const char *a_out_name) |
| 115 | { |
| 116 | core_bfd = bfd_openr (a_out_name, 0); |
| 117 | |
| 118 | if (!core_bfd) |
| 119 | { |
| 120 | perror (a_out_name); |
| 121 | done (1); |
| 122 | } |
| 123 | |
| 124 | if (!bfd_check_format (core_bfd, bfd_object)) |
| 125 | { |
| 126 | fprintf (stderr, "%s: %s: not in a.out format\n", whoami, a_out_name); |
| 127 | done (1); |
| 128 | } |
| 129 | |
| 130 | /* get core's text section: */ |
| 131 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
| 132 | if (!core_text_sect) |
| 133 | { |
| 134 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); |
| 135 | if (!core_text_sect) |
| 136 | { |
| 137 | fprintf (stderr, "%s: can't find .text section in %s\n", |
| 138 | whoami, a_out_name); |
| 139 | done (1); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /* read core's symbol table: */ |
| 144 | |
| 145 | /* this will probably give us more than we need, but that's ok: */ |
| 146 | core_num_syms = bfd_get_symtab_upper_bound (core_bfd); |
| 147 | if (core_num_syms < 0) |
| 148 | { |
| 149 | fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name, |
| 150 | bfd_errmsg (bfd_get_error ())); |
| 151 | done (1); |
| 152 | } |
| 153 | |
| 154 | core_syms = (asymbol **) xmalloc (core_num_syms); |
| 155 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); |
| 156 | if (core_num_syms < 0) |
| 157 | { |
| 158 | fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name, |
| 159 | bfd_errmsg (bfd_get_error ())); |
| 160 | done (1); |
| 161 | } |
| 162 | |
| 163 | if (function_mapping_file) |
| 164 | read_function_mappings (function_mapping_file); |
| 165 | } |
| 166 | |
| 167 | |
| 168 | /* |
| 169 | * Read in the text space of an a.out file |
| 170 | */ |
| 171 | void |
| 172 | DEFUN (core_get_text_space, (core_bfd), bfd * core_bfd) |
| 173 | { |
| 174 | core_text_space = (PTR) malloc (core_text_sect->_raw_size); |
| 175 | |
| 176 | if (!core_text_space) |
| 177 | { |
| 178 | fprintf (stderr, "%s: ran out room for %ld bytes of text space\n", |
| 179 | whoami, core_text_sect->_raw_size); |
| 180 | done (1); |
| 181 | } |
| 182 | if (!bfd_get_section_contents (core_bfd, core_text_sect, core_text_space, |
| 183 | 0, core_text_sect->_raw_size)) |
| 184 | { |
| 185 | bfd_perror ("bfd_get_section_contents"); |
| 186 | free (core_text_space); |
| 187 | core_text_space = 0; |
| 188 | } |
| 189 | if (!core_text_space) |
| 190 | { |
| 191 | fprintf (stderr, "%s: can't do -c\n", whoami); |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | |
| 196 | /* |
| 197 | * Return class of symbol SYM. The returned class can be any of: |
| 198 | * 0 -> symbol is not interesting to us |
| 199 | * 'T' -> symbol is a global name |
| 200 | * 't' -> symbol is a local (static) name |
| 201 | */ |
| 202 | static int |
| 203 | DEFUN (core_sym_class, (sym), asymbol * sym) |
| 204 | { |
| 205 | symbol_info syminfo; |
| 206 | const char *name; |
| 207 | char sym_prefix; |
| 208 | int i; |
| 209 | |
| 210 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) |
| 211 | { |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Must be a text symbol, and static text symbols don't qualify if |
| 217 | * ignore_static_funcs set. |
| 218 | */ |
| 219 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
| 220 | { |
| 221 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", |
| 222 | sym->name)); |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | bfd_get_symbol_info (core_bfd, sym, &syminfo); |
| 227 | i = syminfo.type; |
| 228 | |
| 229 | if (i == 'T') |
| 230 | { |
| 231 | return i; /* it's a global symbol */ |
| 232 | } |
| 233 | |
| 234 | if (i != 't') |
| 235 | { |
| 236 | /* not a static text symbol */ |
| 237 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
| 238 | sym->name, i)); |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | /* do some more filtering on static function-names: */ |
| 243 | |
| 244 | if (ignore_static_funcs) |
| 245 | { |
| 246 | return 0; |
| 247 | } |
| 248 | /* |
| 249 | * Can't zero-length name or funny characters in name, where |
| 250 | * `funny' includes: `.' (.o file names) and `$' (Pascal labels). |
| 251 | */ |
| 252 | if (!sym->name || sym->name[0] == '\0') |
| 253 | { |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | for (name = sym->name; *name; ++name) |
| 258 | { |
| 259 | if (*name == '.' || *name == '$') |
| 260 | { |
| 261 | return 0; |
| 262 | } |
| 263 | } |
| 264 | /* |
| 265 | * On systems where the C compiler adds an underscore to all |
| 266 | * names, static names without underscores seem usually to be |
| 267 | * labels in hand written assembler in the library. We don't want |
| 268 | * these names. This is certainly necessary on a Sparc running |
| 269 | * SunOS 4.1 (try profiling a program that does a lot of |
| 270 | * division). I don't know whether it has harmful side effects on |
| 271 | * other systems. Perhaps it should be made configurable. |
| 272 | */ |
| 273 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
| 274 | if ((sym_prefix && sym_prefix != sym->name[0]) |
| 275 | /* |
| 276 | * GCC may add special symbols to help gdb figure out the file |
| 277 | * language. We want to ignore these, since sometimes they mask |
| 278 | * the real function. (dj@ctron) |
| 279 | */ |
| 280 | || !strncmp (sym->name, "__gnu_compiled", 14) |
| 281 | || !strncmp (sym->name, "___gnu_compiled", 15)) |
| 282 | { |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | /* If the object file supports marking of function symbols, then we can |
| 287 | zap anything that doesn't have BSF_FUNCTION set. */ |
| 288 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
| 289 | return 0; |
| 290 | |
| 291 | return 't'; /* it's a static text symbol */ |
| 292 | } |
| 293 | |
| 294 | |
| 295 | /* |
| 296 | * Get whatever source info we can get regarding address ADDR: |
| 297 | */ |
| 298 | static bool |
| 299 | DEFUN (get_src_info, (addr, filename, name, line_num), |
| 300 | bfd_vma addr AND const char **filename AND const char **name |
| 301 | AND int *line_num) |
| 302 | { |
| 303 | const char *fname = 0, *func_name = 0; |
| 304 | int l = 0; |
| 305 | |
| 306 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, |
| 307 | addr - core_text_sect->vma, |
| 308 | &fname, &func_name, (unsigned int *) &l) |
| 309 | && fname && func_name && l) |
| 310 | { |
| 311 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", |
| 312 | addr, fname, l, func_name)); |
| 313 | *filename = fname; |
| 314 | *name = func_name; |
| 315 | *line_num = l; |
| 316 | return TRUE; |
| 317 | } |
| 318 | else |
| 319 | { |
| 320 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", |
| 321 | (long) addr, fname ? fname : "<unknown>", l, |
| 322 | func_name ? func_name : "<unknown>")); |
| 323 | return FALSE; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | |
| 328 | /* |
| 329 | * Read in symbol table from core. One symbol per function is |
| 330 | * entered. |
| 331 | */ |
| 332 | void |
| 333 | DEFUN (core_create_function_syms, (core_bfd), bfd * core_bfd) |
| 334 | { |
| 335 | bfd_vma min_vma = ~0, max_vma = 0; |
| 336 | int class; |
| 337 | long i, j, found, skip; |
| 338 | |
| 339 | /* pass 1 - determine upper bound on number of function names: */ |
| 340 | symtab.len = 0; |
| 341 | for (i = 0; i < core_num_syms; ++i) |
| 342 | { |
| 343 | if (!core_sym_class (core_syms[i])) |
| 344 | { |
| 345 | continue; |
| 346 | } |
| 347 | |
| 348 | /* This should be replaced with a binary search or hashed |
| 349 | search. Gross. |
| 350 | |
| 351 | Don't create a symtab entry for a function that has |
| 352 | a mapping to a file, unless it's the first function |
| 353 | in the file. */ |
| 354 | skip = 0; |
| 355 | for (j = 0; j < symbol_map_count; j++) |
| 356 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) |
| 357 | { |
| 358 | if (j > 0 && ! strcmp (symbol_map [j].file_name, |
| 359 | symbol_map [j - 1].file_name)) |
| 360 | skip = 1; |
| 361 | break; |
| 362 | } |
| 363 | if (!skip) |
| 364 | ++symtab.len; |
| 365 | } |
| 366 | |
| 367 | if (symtab.len == 0) |
| 368 | { |
| 369 | fprintf (stderr, "%s: file `%s' has no symbols\n", whoami, a_out_name); |
| 370 | done (1); |
| 371 | } |
| 372 | |
| 373 | /* the "+ 2" is for the sentinels: */ |
| 374 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); |
| 375 | |
| 376 | /* pass 2 - create symbols: */ |
| 377 | |
| 378 | symtab.limit = symtab.base; |
| 379 | for (i = 0; i < core_num_syms; ++i) |
| 380 | { |
| 381 | class = core_sym_class (core_syms[i]); |
| 382 | if (!class) |
| 383 | { |
| 384 | DBG (AOUTDEBUG, |
| 385 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", |
| 386 | core_syms[i]->value, core_syms[i]->name)); |
| 387 | continue; |
| 388 | } |
| 389 | /* This should be replaced with a binary search or hashed |
| 390 | search. Gross. */ |
| 391 | |
| 392 | skip = 0; |
| 393 | found = 0; |
| 394 | for (j = 0; j < symbol_map_count; j++) |
| 395 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) |
| 396 | { |
| 397 | if (j > 0 && ! strcmp (symbol_map [j].file_name, |
| 398 | symbol_map [j - 1].file_name)) |
| 399 | skip = 1; |
| 400 | else |
| 401 | found = j; |
| 402 | break; |
| 403 | } |
| 404 | |
| 405 | if (skip) |
| 406 | continue; |
| 407 | |
| 408 | sym_init (symtab.limit); |
| 409 | |
| 410 | /* symbol offsets are always section-relative: */ |
| 411 | |
| 412 | symtab.limit->addr = core_syms[i]->value + core_syms[i]->section->vma; |
| 413 | if (symbol_map_count |
| 414 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) |
| 415 | { |
| 416 | symtab.limit->name = symbol_map[found].file_name; |
| 417 | symtab.limit->mapped = 1; |
| 418 | } |
| 419 | else |
| 420 | { |
| 421 | symtab.limit->name = core_syms[i]->name; |
| 422 | symtab.limit->mapped = 0; |
| 423 | } |
| 424 | |
| 425 | #ifdef __osf__ |
| 426 | /* |
| 427 | * Suppress symbols that are not function names. This is |
| 428 | * useful to suppress code-labels and aliases. |
| 429 | * |
| 430 | * This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
| 431 | * labels do not appear in the symbol table info, so this isn't |
| 432 | * necessary. |
| 433 | */ |
| 434 | { |
| 435 | const char *filename, *func_name; |
| 436 | |
| 437 | if (get_src_info (symtab.limit->addr, &filename, &func_name, |
| 438 | &symtab.limit->line_num)) |
| 439 | { |
| 440 | symtab.limit->file = source_file_lookup_path (filename); |
| 441 | |
| 442 | if (strcmp (symtab.limit->name, func_name) != 0) |
| 443 | { |
| 444 | /* |
| 445 | * The symbol's address maps to a different name, so |
| 446 | * it can't be a function-entry point. This happens |
| 447 | * for labels, for example. |
| 448 | */ |
| 449 | DBG (AOUTDEBUG, |
| 450 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", |
| 451 | symtab.limit->name, func_name)); |
| 452 | continue; |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | #endif |
| 457 | |
| 458 | symtab.limit->is_func = TRUE; |
| 459 | symtab.limit->is_bb_head = TRUE; |
| 460 | if (class == 't') |
| 461 | { |
| 462 | symtab.limit->is_static = TRUE; |
| 463 | } |
| 464 | |
| 465 | min_vma = MIN (symtab.limit->addr, min_vma); |
| 466 | max_vma = MAX (symtab.limit->addr, max_vma); |
| 467 | |
| 468 | /* |
| 469 | * If we see "main" without an initial '_', we assume names |
| 470 | * are *not* prefixed by '_'. |
| 471 | */ |
| 472 | if (symtab.limit->name[0] == 'm' && discard_underscores |
| 473 | && strcmp (symtab.limit->name, "main") == 0) |
| 474 | { |
| 475 | discard_underscores = 0; |
| 476 | } |
| 477 | |
| 478 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", |
| 479 | (long) (symtab.limit - symtab.base), |
| 480 | symtab.limit->name, symtab.limit->addr)); |
| 481 | ++symtab.limit; |
| 482 | } |
| 483 | |
| 484 | /* create sentinels: */ |
| 485 | |
| 486 | sym_init (symtab.limit); |
| 487 | symtab.limit->name = "<locore>"; |
| 488 | symtab.limit->addr = 0; |
| 489 | symtab.limit->end_addr = min_vma - 1; |
| 490 | ++symtab.limit; |
| 491 | |
| 492 | sym_init (symtab.limit); |
| 493 | symtab.limit->name = "<hicore>"; |
| 494 | symtab.limit->addr = max_vma + 1; |
| 495 | symtab.limit->end_addr = ~0; |
| 496 | ++symtab.limit; |
| 497 | |
| 498 | symtab.len = symtab.limit - symtab.base; |
| 499 | symtab_finalize (&symtab); |
| 500 | } |
| 501 | |
| 502 | |
| 503 | /* |
| 504 | * Read in symbol table from core. One symbol per line of source code |
| 505 | * is entered. |
| 506 | */ |
| 507 | void |
| 508 | DEFUN (core_create_line_syms, (core_bfd), bfd * core_bfd) |
| 509 | { |
| 510 | char prev_name[PATH_MAX], prev_filename[PATH_MAX]; |
| 511 | bfd_vma vma, min_vma = ~0, max_vma = 0; |
| 512 | bfd_vma offset, prev_offset, min_dist; |
| 513 | Sym *prev, dummy, *sentinel, *sym; |
| 514 | const char *filename; |
| 515 | int prev_line_num, i; |
| 516 | Sym_Table ltab; |
| 517 | /* |
| 518 | * Create symbols for functions as usual. This is necessary in |
| 519 | * cases where parts of a program were not compiled with -g. For |
| 520 | * those parts we still want to get info at the function level: |
| 521 | */ |
| 522 | core_create_function_syms (core_bfd); |
| 523 | |
| 524 | /* pass 1 - counter number of symbols: */ |
| 525 | |
| 526 | /* |
| 527 | * To find all line information, walk through all possible |
| 528 | * text-space addresses (one by one!) and get the debugging |
| 529 | * info for each address. When the debugging info changes, |
| 530 | * it is time to create a new symbol. |
| 531 | * |
| 532 | * Of course, this is rather slow and it would be better if |
| 533 | * bfd would provide an iterator for enumerating all line |
| 534 | * infos, but for now, we try to speed up the second pass |
| 535 | * by determining what the minimum code distance between two |
| 536 | * lines is. |
| 537 | */ |
| 538 | prev_name[0] = '\0'; |
| 539 | ltab.len = 0; |
| 540 | min_dist = core_text_sect->_raw_size; |
| 541 | prev_offset = -min_dist; |
| 542 | prev_filename[0] = '\0'; |
| 543 | prev_line_num = 0; |
| 544 | for (offset = 0; offset < core_text_sect->_raw_size; offset += MIN_INSN_SIZE) |
| 545 | { |
| 546 | vma = core_text_sect->vma + offset; |
| 547 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
| 548 | || (prev_line_num == dummy.line_num && |
| 549 | strcmp (prev_name, dummy.name) == 0 |
| 550 | && strcmp (prev_filename, filename) == 0)) |
| 551 | { |
| 552 | continue; |
| 553 | } |
| 554 | |
| 555 | ++ltab.len; |
| 556 | prev_line_num = dummy.line_num; |
| 557 | strcpy (prev_name, dummy.name); |
| 558 | strcpy (prev_filename, filename); |
| 559 | |
| 560 | if (offset - prev_offset < min_dist) |
| 561 | { |
| 562 | min_dist = offset - prev_offset; |
| 563 | } |
| 564 | prev_offset = offset; |
| 565 | |
| 566 | min_vma = MIN (vma, min_vma); |
| 567 | max_vma = MAX (vma, max_vma); |
| 568 | } |
| 569 | |
| 570 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] min_dist=%lx\n", min_dist)); |
| 571 | |
| 572 | /* make room for function symbols, too: */ |
| 573 | ltab.len += symtab.len; |
| 574 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); |
| 575 | ltab.limit = ltab.base; |
| 576 | |
| 577 | /* pass 2 - create symbols: */ |
| 578 | |
| 579 | prev = 0; |
| 580 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_dist) |
| 581 | { |
| 582 | sym_init (ltab.limit); |
| 583 | if (!get_src_info (core_text_sect->vma + offset, &filename, |
| 584 | <ab.limit->name, <ab.limit->line_num) |
| 585 | || (prev && prev->line_num == ltab.limit->line_num |
| 586 | && strcmp (prev->name, ltab.limit->name) == 0 |
| 587 | && strcmp (prev->file->name, filename) == 0)) |
| 588 | { |
| 589 | continue; |
| 590 | } |
| 591 | |
| 592 | /* make name pointer a malloc'ed string: */ |
| 593 | ltab.limit->name = xstrdup (ltab.limit->name); |
| 594 | ltab.limit->file = source_file_lookup_path (filename); |
| 595 | |
| 596 | ltab.limit->addr = core_text_sect->vma + offset; |
| 597 | prev = ltab.limit; |
| 598 | |
| 599 | /* |
| 600 | * If we see "main" without an initial '_', we assume names |
| 601 | * are *not* prefixed by '_'. |
| 602 | */ |
| 603 | if (ltab.limit->name[0] == 'm' && discard_underscores |
| 604 | && strcmp (ltab.limit->name, "main") == 0) |
| 605 | { |
| 606 | discard_underscores = 0; |
| 607 | } |
| 608 | |
| 609 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %d %s 0x%lx\n", |
| 610 | ltab.len, ltab.limit->name, |
| 611 | ltab.limit->addr)); |
| 612 | ++ltab.limit; |
| 613 | } |
| 614 | |
| 615 | /* update sentinels: */ |
| 616 | |
| 617 | sentinel = sym_lookup (&symtab, 0); |
| 618 | if (strcmp (sentinel->name, "<locore>") == 0 |
| 619 | && min_vma <= sentinel->end_addr) |
| 620 | { |
| 621 | sentinel->end_addr = min_vma - 1; |
| 622 | } |
| 623 | |
| 624 | sentinel = sym_lookup (&symtab, ~0); |
| 625 | if (strcmp (sentinel->name, "<hicore>") == 0 && max_vma >= sentinel->addr) |
| 626 | { |
| 627 | sentinel->addr = max_vma + 1; |
| 628 | } |
| 629 | |
| 630 | /* copy in function symbols: */ |
| 631 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
| 632 | ltab.limit += symtab.len; |
| 633 | |
| 634 | if (ltab.limit - ltab.base != ltab.len) |
| 635 | { |
| 636 | fprintf (stderr, |
| 637 | "%s: somebody miscounted: ltab.len=%ld instead of %d\n", |
| 638 | whoami, (long) (ltab.limit - ltab.base), ltab.len); |
| 639 | done (1); |
| 640 | } |
| 641 | |
| 642 | /* finalize ltab and make it symbol table: */ |
| 643 | |
| 644 | symtab_finalize (<ab); |
| 645 | free (symtab.base); |
| 646 | symtab = ltab; |
| 647 | |
| 648 | /* now go through all core symbols and set is_static accordingly: */ |
| 649 | |
| 650 | for (i = 0; i < core_num_syms; ++i) |
| 651 | { |
| 652 | if (core_sym_class (core_syms[i]) == 't') |
| 653 | { |
| 654 | sym = sym_lookup (&symtab, core_syms[i]->value |
| 655 | + core_syms[i]->section->vma); |
| 656 | do |
| 657 | { |
| 658 | sym++->is_static = TRUE; |
| 659 | } |
| 660 | while (sym->file == sym[-1].file && |
| 661 | strcmp (sym->name, sym[-1].name) == 0); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | } |