Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | #include "libiberty.h" |
2 | #include "gprof.h" | |
3 | #include "corefile.h" | |
4 | #include "symtab.h" | |
5 | ||
6 | bfd *core_bfd; | |
7 | int core_num_syms; | |
8 | asymbol **core_syms; | |
9 | asection *core_text_sect; | |
10 | PTR core_text_space; | |
11 | ||
12 | int min_insn_size; | |
13 | int offset_to_code; | |
14 | ||
15 | /* For mapping symbols to specific .o files during file ordering. */ | |
16 | struct function_map { | |
17 | char *function_name; | |
18 | char *file_name; | |
19 | }; | |
20 | ||
21 | struct function_map *symbol_map; | |
22 | unsigned int symbol_map_count; | |
23 | ||
24 | extern void i386_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
25 | extern void alpha_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
26 | extern void vax_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
27 | extern void tahoe_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
28 | extern void sparc_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
29 | ||
30 | static void | |
31 | DEFUN (read_function_mappings, (filename), const char *filename) | |
32 | { | |
33 | FILE *file = fopen (filename, "r"); | |
34 | char dummy[1024]; | |
35 | int count = 0; | |
36 | ||
37 | if (!file) | |
38 | { | |
39 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
40 | done (1); | |
41 | } | |
42 | ||
43 | /* First parse the mapping file so we know how big we need to | |
44 | make our tables. We also do some sanity checks at this | |
45 | time. */ | |
46 | while (!feof (file)) | |
47 | { | |
48 | int matches; | |
49 | ||
50 | matches = fscanf (file, "%[^\n:]", dummy); | |
51 | if (!matches) | |
52 | { | |
53 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), | |
54 | whoami, filename); | |
55 | done (1); | |
56 | } | |
57 | ||
58 | /* Just skip messages about files with no symbols. */ | |
59 | if (!strncmp (dummy, "No symbols in ", 14)) | |
60 | { | |
61 | fscanf (file, "\n"); | |
62 | continue; | |
63 | } | |
64 | ||
65 | /* Don't care what else is on this line at this point. */ | |
66 | fscanf (file, "%[^\n]\n", dummy); | |
67 | count++; | |
68 | } | |
69 | ||
70 | /* Now we know how big we need to make our table. */ | |
71 | symbol_map = ((struct function_map *) | |
72 | xmalloc (count * sizeof (struct function_map))); | |
73 | ||
74 | /* Rewind the input file so we can read it again. */ | |
75 | rewind (file); | |
76 | ||
77 | /* Read each entry and put it into the table. */ | |
78 | count = 0; | |
79 | while (!feof (file)) | |
80 | { | |
81 | int matches; | |
82 | char *tmp; | |
83 | ||
84 | matches = fscanf (file, "%[^\n:]", dummy); | |
85 | if (!matches) | |
86 | { | |
87 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), | |
88 | whoami, filename); | |
89 | done (1); | |
90 | } | |
91 | ||
92 | /* Just skip messages about files with no symbols. */ | |
93 | if (!strncmp (dummy, "No symbols in ", 14)) | |
94 | { | |
95 | fscanf (file, "\n"); | |
96 | continue; | |
97 | } | |
98 | ||
99 | /* dummy has the filename, go ahead and copy it. */ | |
100 | symbol_map[count].file_name = xmalloc (strlen (dummy) + 1); | |
101 | strcpy (symbol_map[count].file_name, dummy); | |
102 | ||
103 | /* Now we need the function name. */ | |
104 | fscanf (file, "%[^\n]\n", dummy); | |
105 | tmp = strrchr (dummy, ' ') + 1; | |
106 | symbol_map[count].function_name = xmalloc (strlen (tmp) + 1); | |
107 | strcpy (symbol_map[count].function_name, tmp); | |
108 | count++; | |
109 | } | |
110 | ||
111 | /* Record the size of the map table for future reference. */ | |
112 | symbol_map_count = count; | |
113 | } | |
114 | ||
115 | void | |
116 | DEFUN (core_init, (a_out_name), const char *a_out_name) | |
117 | { | |
118 | core_bfd = bfd_openr (a_out_name, 0); | |
119 | ||
120 | if (!core_bfd) | |
121 | { | |
122 | perror (a_out_name); | |
123 | done (1); | |
124 | } | |
125 | ||
126 | if (!bfd_check_format (core_bfd, bfd_object)) | |
127 | { | |
128 | fprintf (stderr, _("%s: %s: not in a.out format\n"), whoami, a_out_name); | |
129 | done (1); | |
130 | } | |
131 | ||
132 | /* get core's text section: */ | |
133 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); | |
134 | if (!core_text_sect) | |
135 | { | |
136 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
137 | if (!core_text_sect) | |
138 | { | |
139 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
140 | whoami, a_out_name); | |
141 | done (1); | |
142 | } | |
143 | } | |
144 | ||
145 | /* read core's symbol table: */ | |
146 | ||
147 | /* this will probably give us more than we need, but that's ok: */ | |
148 | core_num_syms = bfd_get_symtab_upper_bound (core_bfd); | |
149 | if (core_num_syms < 0) | |
150 | { | |
151 | fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name, | |
152 | bfd_errmsg (bfd_get_error ())); | |
153 | done (1); | |
154 | } | |
155 | ||
156 | core_syms = (asymbol **) xmalloc (core_num_syms); | |
157 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); | |
158 | if (core_num_syms < 0) | |
159 | { | |
160 | fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name, | |
161 | bfd_errmsg (bfd_get_error ())); | |
162 | done (1); | |
163 | } | |
164 | ||
165 | min_insn_size = 1; | |
166 | offset_to_code = 0; | |
167 | ||
168 | switch (bfd_get_arch (core_bfd)) | |
169 | { | |
170 | case bfd_arch_vax: | |
171 | case bfd_arch_tahoe: | |
172 | offset_to_code = 2; | |
173 | break; | |
174 | ||
175 | case bfd_arch_alpha: | |
176 | min_insn_size = 4; | |
177 | break; | |
178 | ||
179 | default: | |
180 | break; | |
181 | } | |
182 | ||
183 | if (function_mapping_file) | |
184 | read_function_mappings (function_mapping_file); | |
185 | } | |
186 | ||
187 | ||
188 | /* | |
189 | * Read in the text space of an a.out file | |
190 | */ | |
191 | void | |
192 | DEFUN (core_get_text_space, (core_bfd), bfd * core_bfd) | |
193 | { | |
194 | core_text_space = (PTR) malloc (core_text_sect->_raw_size); | |
195 | ||
196 | if (!core_text_space) | |
197 | { | |
fdcf7d43 ILT |
198 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
199 | whoami, (unsigned long) core_text_sect->_raw_size); | |
252b5132 RH |
200 | done (1); |
201 | } | |
202 | if (!bfd_get_section_contents (core_bfd, core_text_sect, core_text_space, | |
203 | 0, core_text_sect->_raw_size)) | |
204 | { | |
205 | bfd_perror ("bfd_get_section_contents"); | |
206 | free (core_text_space); | |
207 | core_text_space = 0; | |
208 | } | |
209 | if (!core_text_space) | |
210 | { | |
211 | fprintf (stderr, _("%s: can't do -c\n"), whoami); | |
212 | } | |
213 | } | |
214 | ||
215 | ||
216 | void | |
217 | DEFUN (find_call, (parent, p_lowpc, p_highpc), | |
218 | Sym * parent AND bfd_vma p_lowpc AND bfd_vma p_highpc) | |
219 | { | |
220 | switch (bfd_get_arch (core_bfd)) | |
221 | { | |
222 | case bfd_arch_i386: | |
223 | i386_find_call (parent, p_lowpc, p_highpc); | |
224 | break; | |
225 | ||
226 | case bfd_arch_alpha: | |
227 | alpha_find_call (parent, p_lowpc, p_highpc); | |
228 | break; | |
229 | ||
230 | case bfd_arch_vax: | |
231 | vax_find_call (parent, p_lowpc, p_highpc); | |
232 | break; | |
233 | ||
234 | case bfd_arch_sparc: | |
235 | sparc_find_call (parent, p_lowpc, p_highpc); | |
236 | break; | |
237 | ||
238 | case bfd_arch_tahoe: | |
239 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
240 | break; | |
241 | ||
242 | default: | |
243 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
244 | whoami, bfd_printable_name(core_bfd)); | |
245 | ||
246 | /* Don't give the error more than once. */ | |
247 | ignore_direct_calls = FALSE; | |
248 | } | |
249 | } | |
250 | ||
251 | /* | |
252 | * Return class of symbol SYM. The returned class can be any of: | |
253 | * 0 -> symbol is not interesting to us | |
254 | * 'T' -> symbol is a global name | |
255 | * 't' -> symbol is a local (static) name | |
256 | */ | |
257 | static int | |
258 | DEFUN (core_sym_class, (sym), asymbol * sym) | |
259 | { | |
260 | symbol_info syminfo; | |
261 | const char *name; | |
262 | char sym_prefix; | |
263 | int i; | |
264 | ||
265 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
266 | { | |
267 | return 0; | |
268 | } | |
269 | ||
270 | /* | |
271 | * Must be a text symbol, and static text symbols don't qualify if | |
272 | * ignore_static_funcs set. | |
273 | */ | |
274 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) | |
275 | { | |
276 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
277 | sym->name)); | |
278 | return 0; | |
279 | } | |
280 | ||
281 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
282 | i = syminfo.type; | |
283 | ||
284 | if (i == 'T') | |
285 | { | |
286 | return i; /* it's a global symbol */ | |
287 | } | |
288 | ||
289 | if (i == 'W') | |
290 | { | |
291 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may | |
292 | also be a data symbol. */ | |
293 | return 'T'; | |
294 | } | |
295 | ||
296 | if (i != 't') | |
297 | { | |
298 | /* not a static text symbol */ | |
299 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", | |
300 | sym->name, i)); | |
301 | return 0; | |
302 | } | |
303 | ||
304 | /* do some more filtering on static function-names: */ | |
305 | ||
306 | if (ignore_static_funcs) | |
307 | { | |
308 | return 0; | |
309 | } | |
310 | /* | |
311 | * Can't zero-length name or funny characters in name, where | |
312 | * `funny' includes: `.' (.o file names) and `$' (Pascal labels). | |
313 | */ | |
314 | if (!sym->name || sym->name[0] == '\0') | |
315 | { | |
316 | return 0; | |
317 | } | |
318 | ||
319 | for (name = sym->name; *name; ++name) | |
320 | { | |
321 | if (*name == '.' || *name == '$') | |
322 | { | |
323 | return 0; | |
324 | } | |
325 | } | |
326 | /* | |
327 | * On systems where the C compiler adds an underscore to all | |
328 | * names, static names without underscores seem usually to be | |
329 | * labels in hand written assembler in the library. We don't want | |
330 | * these names. This is certainly necessary on a Sparc running | |
331 | * SunOS 4.1 (try profiling a program that does a lot of | |
332 | * division). I don't know whether it has harmful side effects on | |
333 | * other systems. Perhaps it should be made configurable. | |
334 | */ | |
335 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); | |
336 | if ((sym_prefix && sym_prefix != sym->name[0]) | |
337 | /* | |
338 | * GCC may add special symbols to help gdb figure out the file | |
339 | * language. We want to ignore these, since sometimes they mask | |
340 | * the real function. (dj@ctron) | |
341 | */ | |
342 | || !strncmp (sym->name, "__gnu_compiled", 14) | |
343 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
344 | { | |
345 | return 0; | |
346 | } | |
347 | ||
348 | /* If the object file supports marking of function symbols, then we can | |
349 | zap anything that doesn't have BSF_FUNCTION set. */ | |
350 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) | |
351 | return 0; | |
352 | ||
353 | return 't'; /* it's a static text symbol */ | |
354 | } | |
355 | ||
356 | ||
357 | /* | |
358 | * Get whatever source info we can get regarding address ADDR: | |
359 | */ | |
360 | static bool | |
361 | DEFUN (get_src_info, (addr, filename, name, line_num), | |
362 | bfd_vma addr AND const char **filename AND const char **name | |
363 | AND int *line_num) | |
364 | { | |
365 | const char *fname = 0, *func_name = 0; | |
366 | int l = 0; | |
367 | ||
368 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
369 | addr - core_text_sect->vma, | |
370 | &fname, &func_name, (unsigned int *) &l) | |
371 | && fname && func_name && l) | |
372 | { | |
373 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 374 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
375 | *filename = fname; |
376 | *name = func_name; | |
377 | *line_num = l; | |
378 | return TRUE; | |
379 | } | |
380 | else | |
381 | { | |
382 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
383 | (long) addr, fname ? fname : "<unknown>", l, | |
384 | func_name ? func_name : "<unknown>")); | |
385 | return FALSE; | |
386 | } | |
387 | } | |
388 | ||
389 | ||
390 | /* | |
391 | * Read in symbol table from core. One symbol per function is | |
392 | * entered. | |
393 | */ | |
394 | void | |
8622e41b ILT |
395 | core_create_function_syms (core_bfd) |
396 | bfd *core_bfd ATTRIBUTE_UNUSED; | |
252b5132 RH |
397 | { |
398 | bfd_vma min_vma = ~0, max_vma = 0; | |
399 | int class; | |
400 | long i, found, skip; | |
401 | unsigned int j; | |
402 | ||
403 | /* pass 1 - determine upper bound on number of function names: */ | |
404 | symtab.len = 0; | |
405 | for (i = 0; i < core_num_syms; ++i) | |
406 | { | |
407 | if (!core_sym_class (core_syms[i])) | |
408 | { | |
409 | continue; | |
410 | } | |
411 | ||
412 | /* This should be replaced with a binary search or hashed | |
413 | search. Gross. | |
414 | ||
415 | Don't create a symtab entry for a function that has | |
416 | a mapping to a file, unless it's the first function | |
417 | in the file. */ | |
418 | skip = 0; | |
419 | for (j = 0; j < symbol_map_count; j++) | |
420 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
421 | { | |
422 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
423 | symbol_map [j - 1].file_name)) | |
424 | skip = 1; | |
425 | break; | |
426 | } | |
427 | if (!skip) | |
428 | ++symtab.len; | |
429 | } | |
430 | ||
431 | if (symtab.len == 0) | |
432 | { | |
433 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
434 | done (1); | |
435 | } | |
436 | ||
437 | /* the "+ 2" is for the sentinels: */ | |
438 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); | |
439 | ||
440 | /* pass 2 - create symbols: */ | |
441 | ||
442 | symtab.limit = symtab.base; | |
443 | for (i = 0; i < core_num_syms; ++i) | |
444 | { | |
445 | class = core_sym_class (core_syms[i]); | |
446 | if (!class) | |
447 | { | |
448 | DBG (AOUTDEBUG, | |
449 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
450 | (unsigned long) core_syms[i]->value, |
451 | core_syms[i]->name)); | |
252b5132 RH |
452 | continue; |
453 | } | |
454 | /* This should be replaced with a binary search or hashed | |
455 | search. Gross. */ | |
456 | ||
457 | skip = 0; | |
458 | found = 0; | |
459 | for (j = 0; j < symbol_map_count; j++) | |
460 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
461 | { | |
462 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
463 | symbol_map [j - 1].file_name)) | |
464 | skip = 1; | |
465 | else | |
466 | found = j; | |
467 | break; | |
468 | } | |
469 | ||
470 | if (skip) | |
471 | continue; | |
472 | ||
473 | sym_init (symtab.limit); | |
474 | ||
475 | /* symbol offsets are always section-relative: */ | |
476 | ||
477 | symtab.limit->addr = core_syms[i]->value + core_syms[i]->section->vma; | |
478 | if (symbol_map_count | |
479 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) | |
480 | { | |
481 | symtab.limit->name = symbol_map[found].file_name; | |
482 | symtab.limit->mapped = 1; | |
483 | } | |
484 | else | |
485 | { | |
486 | symtab.limit->name = core_syms[i]->name; | |
487 | symtab.limit->mapped = 0; | |
488 | } | |
489 | ||
490 | /* Lookup filename and line number, if we can */ | |
491 | ||
492 | { | |
493 | const char *filename, *func_name; | |
494 | ||
495 | if (get_src_info (symtab.limit->addr, &filename, &func_name, | |
496 | &symtab.limit->line_num)) | |
497 | { | |
498 | symtab.limit->file = source_file_lookup_path (filename); | |
499 | ||
500 | /* FIXME: Checking __osf__ here does not work with a cross | |
501 | gprof. */ | |
502 | #ifdef __osf__ | |
503 | /* | |
504 | * Suppress symbols that are not function names. This is | |
505 | * useful to suppress code-labels and aliases. | |
506 | * | |
507 | * This is known to be useful under DEC's OSF/1. Under SunOS 4.x, | |
508 | * labels do not appear in the symbol table info, so this isn't | |
509 | * necessary. | |
510 | */ | |
511 | ||
512 | if (strcmp (symtab.limit->name, func_name) != 0) | |
513 | { | |
514 | /* | |
515 | * The symbol's address maps to a different name, so | |
516 | * it can't be a function-entry point. This happens | |
517 | * for labels, for example. | |
518 | */ | |
519 | DBG (AOUTDEBUG, | |
520 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
521 | symtab.limit->name, func_name)); | |
522 | continue; | |
523 | } | |
524 | #endif | |
525 | } | |
526 | } | |
527 | ||
528 | symtab.limit->is_func = TRUE; | |
529 | symtab.limit->is_bb_head = TRUE; | |
530 | if (class == 't') | |
531 | { | |
532 | symtab.limit->is_static = TRUE; | |
533 | } | |
534 | ||
535 | min_vma = MIN (symtab.limit->addr, min_vma); | |
536 | max_vma = MAX (symtab.limit->addr, max_vma); | |
537 | ||
538 | /* | |
539 | * If we see "main" without an initial '_', we assume names | |
540 | * are *not* prefixed by '_'. | |
541 | */ | |
542 | if (symtab.limit->name[0] == 'm' && discard_underscores | |
543 | && strcmp (symtab.limit->name, "main") == 0) | |
544 | { | |
545 | discard_underscores = 0; | |
546 | } | |
547 | ||
548 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", | |
549 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
550 | symtab.limit->name, |
551 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
552 | ++symtab.limit; |
553 | } | |
554 | ||
555 | /* create sentinels: */ | |
556 | ||
557 | sym_init (symtab.limit); | |
558 | symtab.limit->name = "<locore>"; | |
559 | symtab.limit->addr = 0; | |
560 | symtab.limit->end_addr = min_vma - 1; | |
561 | ++symtab.limit; | |
562 | ||
563 | sym_init (symtab.limit); | |
564 | symtab.limit->name = "<hicore>"; | |
565 | symtab.limit->addr = max_vma + 1; | |
566 | symtab.limit->end_addr = ~0; | |
567 | ++symtab.limit; | |
568 | ||
569 | symtab.len = symtab.limit - symtab.base; | |
570 | symtab_finalize (&symtab); | |
571 | } | |
572 | ||
573 | ||
574 | /* | |
575 | * Read in symbol table from core. One symbol per line of source code | |
576 | * is entered. | |
577 | */ | |
578 | void | |
579 | DEFUN (core_create_line_syms, (core_bfd), bfd * core_bfd) | |
580 | { | |
581 | char *prev_name, *prev_filename; | |
582 | int prev_name_len, prev_filename_len; | |
583 | bfd_vma vma, min_vma = ~0, max_vma = 0; | |
584 | bfd_vma offset; | |
585 | Sym *prev, dummy, *sentinel, *sym; | |
586 | const char *filename; | |
587 | int prev_line_num; | |
588 | Sym_Table ltab; | |
589 | /* | |
590 | * Create symbols for functions as usual. This is necessary in | |
591 | * cases where parts of a program were not compiled with -g. For | |
592 | * those parts we still want to get info at the function level: | |
593 | */ | |
594 | core_create_function_syms (core_bfd); | |
595 | ||
596 | /* pass 1 - counter number of symbols: */ | |
597 | ||
598 | /* | |
599 | * To find all line information, walk through all possible | |
600 | * text-space addresses (one by one!) and get the debugging | |
601 | * info for each address. When the debugging info changes, | |
602 | * it is time to create a new symbol. | |
603 | * | |
604 | * Of course, this is rather slow and it would be better if | |
605 | * bfd would provide an iterator for enumerating all line infos | |
606 | */ | |
607 | prev_name_len = PATH_MAX; | |
608 | prev_filename_len = PATH_MAX; | |
609 | prev_name = xmalloc (prev_name_len); | |
610 | prev_filename = xmalloc (prev_filename_len); | |
611 | ltab.len = 0; | |
612 | prev_line_num = 0; | |
613 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) | |
614 | { | |
615 | int len; | |
616 | ||
617 | vma = core_text_sect->vma + offset; | |
618 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) | |
619 | || (prev_line_num == dummy.line_num | |
620 | && prev_name != NULL | |
621 | && strcmp (prev_name, dummy.name) == 0 | |
622 | && strcmp (prev_filename, filename) == 0)) | |
623 | { | |
624 | continue; | |
625 | } | |
626 | ||
627 | ++ltab.len; | |
628 | prev_line_num = dummy.line_num; | |
629 | ||
630 | len = strlen (dummy.name); | |
631 | if (len >= prev_name_len) | |
632 | { | |
633 | prev_name_len = len + 1024; | |
634 | free (prev_name); | |
635 | prev_name = xmalloc (prev_name_len); | |
636 | } | |
637 | strcpy (prev_name, dummy.name); | |
638 | ||
639 | len = strlen (filename); | |
640 | if (len >= prev_filename_len) | |
641 | { | |
642 | prev_filename_len = len + 1024; | |
643 | free (prev_filename); | |
644 | prev_filename = xmalloc (prev_filename_len); | |
645 | } | |
646 | strcpy (prev_filename, filename); | |
647 | ||
648 | min_vma = MIN (vma, min_vma); | |
649 | max_vma = MAX (vma, max_vma); | |
650 | } | |
651 | ||
652 | free (prev_name); | |
653 | free (prev_filename); | |
654 | ||
655 | /* make room for function symbols, too: */ | |
656 | ltab.len += symtab.len; | |
657 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
658 | ltab.limit = ltab.base; | |
659 | ||
660 | /* pass 2 - create symbols: */ | |
661 | ||
662 | /* We now set is_static as we go along, rather than by running | |
663 | through the symbol table at the end. | |
664 | ||
665 | The old way called symtab_finalize before the is_static pass, | |
666 | causing a problem since symtab_finalize uses is_static as part of | |
667 | its address conflict resolution algorithm. Since global symbols | |
668 | were prefered over static symbols, and all line symbols were | |
669 | global at that point, static function names that conflicted with | |
670 | their own line numbers (static, but labeled as global) were | |
671 | rejected in favor of the line num. | |
672 | ||
673 | This was not the desired functionality. We always want to keep | |
674 | our function symbols and discard any conflicting line symbols. | |
675 | Perhaps symtab_finalize should be modified to make this | |
676 | distinction as well, but the current fix works and the code is a | |
677 | lot cleaner now. */ | |
678 | ||
679 | prev = 0; | |
680 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) | |
681 | { | |
682 | sym_init (ltab.limit); | |
683 | if (!get_src_info (core_text_sect->vma + offset, &filename, | |
684 | <ab.limit->name, <ab.limit->line_num) | |
685 | || (prev && prev->line_num == ltab.limit->line_num | |
686 | && strcmp (prev->name, ltab.limit->name) == 0 | |
687 | && strcmp (prev->file->name, filename) == 0)) | |
688 | { | |
689 | continue; | |
690 | } | |
691 | ||
692 | /* make name pointer a malloc'ed string: */ | |
693 | ltab.limit->name = xstrdup (ltab.limit->name); | |
694 | ltab.limit->file = source_file_lookup_path (filename); | |
695 | ||
696 | ltab.limit->addr = core_text_sect->vma + offset; | |
697 | ||
698 | /* Set is_static based on the enclosing function, using either: | |
699 | * 1) the previous symbol, if it's from the same function, or | |
700 | * 2) a symtab lookup | |
701 | */ | |
702 | ||
703 | if (prev && ltab.limit->file == prev->file && | |
704 | strcmp (ltab.limit->name, prev->name) == 0) | |
705 | { | |
706 | ltab.limit->is_static = prev->is_static; | |
707 | } | |
708 | else | |
709 | { | |
710 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
711 | ltab.limit->is_static = sym->is_static; | |
712 | } | |
713 | ||
714 | prev = ltab.limit; | |
715 | ||
716 | /* | |
717 | * If we see "main" without an initial '_', we assume names | |
718 | * are *not* prefixed by '_'. | |
719 | */ | |
720 | if (ltab.limit->name[0] == 'm' && discard_underscores | |
721 | && strcmp (ltab.limit->name, "main") == 0) | |
722 | { | |
723 | discard_underscores = 0; | |
724 | } | |
725 | ||
4a607dcc ILT |
726 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
727 | (unsigned long) (ltab.limit - ltab.base), | |
728 | ltab.limit->name, | |
fdcf7d43 | 729 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
730 | ++ltab.limit; |
731 | } | |
732 | ||
733 | /* update sentinels: */ | |
734 | ||
735 | sentinel = sym_lookup (&symtab, 0); | |
736 | if (strcmp (sentinel->name, "<locore>") == 0 | |
737 | && min_vma <= sentinel->end_addr) | |
738 | { | |
739 | sentinel->end_addr = min_vma - 1; | |
740 | } | |
741 | ||
742 | sentinel = sym_lookup (&symtab, ~0); | |
743 | if (strcmp (sentinel->name, "<hicore>") == 0 && max_vma >= sentinel->addr) | |
744 | { | |
745 | sentinel->addr = max_vma + 1; | |
746 | } | |
747 | ||
748 | /* copy in function symbols: */ | |
749 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); | |
750 | ltab.limit += symtab.len; | |
751 | ||
752 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
753 | { | |
754 | fprintf (stderr, | |
755 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
756 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
757 | done (1); | |
758 | } | |
759 | ||
760 | /* finalize ltab and make it symbol table: */ | |
761 | ||
762 | symtab_finalize (<ab); | |
763 | free (symtab.base); | |
764 | symtab = ltab; | |
765 | ||
766 | } |