Commit | Line | Data |
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5489fcc3 KR |
1 | #include "libiberty.h" |
2 | #include "gprof.h" | |
3 | #include "core.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 | ||
c3de2a19 ILT |
12 | int min_insn_size; |
13 | int offset_to_code; | |
14 | ||
64c50fc5 JL |
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 | int symbol_map_count; | |
23 | ||
c3de2a19 ILT |
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 | ||
64c50fc5 JL |
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. */ | |
1c34a108 ILT |
71 | symbol_map = ((struct function_map *) |
72 | xmalloc (count * sizeof (struct function_map))); | |
64c50fc5 JL |
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 | } | |
5489fcc3 KR |
114 | |
115 | void | |
12516a37 | 116 | DEFUN (core_init, (a_out_name), const char *a_out_name) |
5489fcc3 | 117 | { |
12516a37 KR |
118 | core_bfd = bfd_openr (a_out_name, 0); |
119 | ||
120 | if (!core_bfd) | |
121 | { | |
122 | perror (a_out_name); | |
123 | done (1); | |
03c35bcb | 124 | } |
12516a37 KR |
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); | |
03c35bcb | 130 | } |
12516a37 KR |
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); | |
03c35bcb KR |
142 | } |
143 | } | |
12516a37 KR |
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); | |
03c35bcb | 154 | } |
12516a37 KR |
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); | |
03c35bcb | 163 | } |
64c50fc5 | 164 | |
c3de2a19 ILT |
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 | } | |
181 | ||
64c50fc5 JL |
182 | if (function_mapping_file) |
183 | read_function_mappings (function_mapping_file); | |
03c35bcb | 184 | } |
5489fcc3 KR |
185 | |
186 | ||
187 | /* | |
188 | * Read in the text space of an a.out file | |
189 | */ | |
190 | void | |
12516a37 | 191 | DEFUN (core_get_text_space, (core_bfd), bfd * core_bfd) |
5489fcc3 | 192 | { |
12516a37 KR |
193 | core_text_space = (PTR) malloc (core_text_sect->_raw_size); |
194 | ||
195 | if (!core_text_space) | |
5489fcc3 | 196 | { |
12516a37 KR |
197 | fprintf (stderr, "%s: ran out room for %ld bytes of text space\n", |
198 | whoami, core_text_sect->_raw_size); | |
199 | done (1); | |
03c35bcb | 200 | } |
12516a37 KR |
201 | if (!bfd_get_section_contents (core_bfd, core_text_sect, core_text_space, |
202 | 0, core_text_sect->_raw_size)) | |
203 | { | |
204 | bfd_perror ("bfd_get_section_contents"); | |
205 | free (core_text_space); | |
206 | core_text_space = 0; | |
03c35bcb | 207 | } |
12516a37 KR |
208 | if (!core_text_space) |
209 | { | |
210 | fprintf (stderr, "%s: can't do -c\n", whoami); | |
03c35bcb KR |
211 | } |
212 | } | |
5489fcc3 KR |
213 | |
214 | ||
c3de2a19 ILT |
215 | void |
216 | DEFUN (find_call, (parent, p_lowpc, p_highpc), | |
217 | Sym * parent AND bfd_vma p_lowpc AND bfd_vma p_highpc) | |
218 | { | |
219 | switch (bfd_get_arch (core_bfd)) | |
220 | { | |
221 | case bfd_arch_i386: | |
222 | i386_find_call (parent, p_lowpc, p_highpc); | |
223 | break; | |
224 | ||
225 | case bfd_arch_alpha: | |
226 | alpha_find_call (parent, p_lowpc, p_highpc); | |
227 | break; | |
228 | ||
229 | case bfd_arch_vax: | |
230 | vax_find_call (parent, p_lowpc, p_highpc); | |
231 | break; | |
232 | ||
233 | case bfd_arch_sparc: | |
234 | sparc_find_call (parent, p_lowpc, p_highpc); | |
235 | break; | |
236 | ||
237 | case bfd_arch_tahoe: | |
238 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
239 | break; | |
240 | ||
241 | default: | |
242 | fprintf (stderr, "%s: -c not supported on architecture %s\n", | |
243 | whoami, bfd_printable_name(core_bfd)); | |
244 | ||
245 | /* Don't give the error more than once. */ | |
246 | ignore_direct_calls = FALSE; | |
247 | } | |
248 | } | |
249 | ||
5489fcc3 KR |
250 | /* |
251 | * Return class of symbol SYM. The returned class can be any of: | |
12516a37 KR |
252 | * 0 -> symbol is not interesting to us |
253 | * 'T' -> symbol is a global name | |
254 | * 't' -> symbol is a local (static) name | |
5489fcc3 KR |
255 | */ |
256 | static int | |
12516a37 | 257 | DEFUN (core_sym_class, (sym), asymbol * sym) |
5489fcc3 | 258 | { |
12516a37 KR |
259 | symbol_info syminfo; |
260 | const char *name; | |
261 | char sym_prefix; | |
262 | int i; | |
263 | ||
0f579087 | 264 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) |
12516a37 KR |
265 | { |
266 | return 0; | |
03c35bcb | 267 | } |
12516a37 | 268 | |
0f579087 ILT |
269 | /* |
270 | * Must be a text symbol, and static text symbols don't qualify if | |
271 | * ignore_static_funcs set. | |
272 | */ | |
12516a37 KR |
273 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
274 | { | |
275 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
5489fcc3 | 276 | sym->name)); |
12516a37 | 277 | return 0; |
03c35bcb | 278 | } |
5489fcc3 | 279 | |
12516a37 KR |
280 | bfd_get_symbol_info (core_bfd, sym, &syminfo); |
281 | i = syminfo.type; | |
5489fcc3 | 282 | |
12516a37 KR |
283 | if (i == 'T') |
284 | { | |
285 | return i; /* it's a global symbol */ | |
03c35bcb | 286 | } |
5489fcc3 | 287 | |
a3da1edc ILT |
288 | if (i == 'W') |
289 | { | |
290 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may | |
291 | also be a data symbol. */ | |
292 | return 'T'; | |
293 | } | |
294 | ||
12516a37 KR |
295 | if (i != 't') |
296 | { | |
297 | /* not a static text symbol */ | |
298 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", | |
5489fcc3 | 299 | sym->name, i)); |
12516a37 | 300 | return 0; |
03c35bcb | 301 | } |
12516a37 KR |
302 | |
303 | /* do some more filtering on static function-names: */ | |
304 | ||
305 | if (ignore_static_funcs) | |
306 | { | |
307 | return 0; | |
03c35bcb | 308 | } |
12516a37 KR |
309 | /* |
310 | * Can't zero-length name or funny characters in name, where | |
311 | * `funny' includes: `.' (.o file names) and `$' (Pascal labels). | |
312 | */ | |
313 | if (!sym->name || sym->name[0] == '\0') | |
5489fcc3 | 314 | { |
12516a37 | 315 | return 0; |
03c35bcb | 316 | } |
12516a37 KR |
317 | |
318 | for (name = sym->name; *name; ++name) | |
319 | { | |
320 | if (*name == '.' || *name == '$') | |
321 | { | |
322 | return 0; | |
03c35bcb KR |
323 | } |
324 | } | |
12516a37 KR |
325 | /* |
326 | * On systems where the C compiler adds an underscore to all | |
327 | * names, static names without underscores seem usually to be | |
328 | * labels in hand written assembler in the library. We don't want | |
329 | * these names. This is certainly necessary on a Sparc running | |
330 | * SunOS 4.1 (try profiling a program that does a lot of | |
331 | * division). I don't know whether it has harmful side effects on | |
332 | * other systems. Perhaps it should be made configurable. | |
333 | */ | |
334 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); | |
df928c8f | 335 | if ((sym_prefix && sym_prefix != sym->name[0]) |
12516a37 KR |
336 | /* |
337 | * GCC may add special symbols to help gdb figure out the file | |
338 | * language. We want to ignore these, since sometimes they mask | |
339 | * the real function. (dj@ctron) | |
340 | */ | |
341 | || !strncmp (sym->name, "__gnu_compiled", 14) | |
342 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
343 | { | |
344 | return 0; | |
03c35bcb | 345 | } |
32843f94 JL |
346 | |
347 | /* If the object file supports marking of function symbols, then we can | |
348 | zap anything that doesn't have BSF_FUNCTION set. */ | |
349 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) | |
350 | return 0; | |
351 | ||
12516a37 | 352 | return 't'; /* it's a static text symbol */ |
03c35bcb | 353 | } |
5489fcc3 KR |
354 | |
355 | ||
356 | /* | |
357 | * Get whatever source info we can get regarding address ADDR: | |
358 | */ | |
359 | static bool | |
12516a37 KR |
360 | DEFUN (get_src_info, (addr, filename, name, line_num), |
361 | bfd_vma addr AND const char **filename AND const char **name | |
362 | AND int *line_num) | |
5489fcc3 | 363 | { |
12516a37 KR |
364 | const char *fname = 0, *func_name = 0; |
365 | int l = 0; | |
5489fcc3 | 366 | |
12516a37 KR |
367 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, |
368 | addr - core_text_sect->vma, | |
643f17d2 | 369 | &fname, &func_name, (unsigned int *) &l) |
12516a37 | 370 | && fname && func_name && l) |
5489fcc3 | 371 | { |
12516a37 | 372 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", |
5489fcc3 | 373 | addr, fname, l, func_name)); |
12516a37 KR |
374 | *filename = fname; |
375 | *name = func_name; | |
376 | *line_num = l; | |
377 | return TRUE; | |
378 | } | |
379 | else | |
380 | { | |
381 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
5489fcc3 KR |
382 | (long) addr, fname ? fname : "<unknown>", l, |
383 | func_name ? func_name : "<unknown>")); | |
12516a37 | 384 | return FALSE; |
03c35bcb KR |
385 | } |
386 | } | |
5489fcc3 KR |
387 | |
388 | ||
389 | /* | |
390 | * Read in symbol table from core. One symbol per function is | |
391 | * entered. | |
392 | */ | |
393 | void | |
12516a37 | 394 | DEFUN (core_create_function_syms, (core_bfd), bfd * core_bfd) |
5489fcc3 | 395 | { |
12516a37 | 396 | bfd_vma min_vma = ~0, max_vma = 0; |
12516a37 | 397 | int class; |
64c50fc5 | 398 | long i, j, found, skip; |
12516a37 KR |
399 | |
400 | /* pass 1 - determine upper bound on number of function names: */ | |
401 | symtab.len = 0; | |
402 | for (i = 0; i < core_num_syms; ++i) | |
403 | { | |
404 | if (!core_sym_class (core_syms[i])) | |
405 | { | |
406 | continue; | |
03c35bcb | 407 | } |
64c50fc5 JL |
408 | |
409 | /* This should be replaced with a binary search or hashed | |
410 | search. Gross. | |
411 | ||
412 | Don't create a symtab entry for a function that has | |
413 | a mapping to a file, unless it's the first function | |
414 | in the file. */ | |
415 | skip = 0; | |
416 | for (j = 0; j < symbol_map_count; j++) | |
417 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
418 | { | |
419 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
420 | symbol_map [j - 1].file_name)) | |
421 | skip = 1; | |
422 | break; | |
423 | } | |
424 | if (!skip) | |
425 | ++symtab.len; | |
03c35bcb | 426 | } |
12516a37 KR |
427 | |
428 | if (symtab.len == 0) | |
429 | { | |
430 | fprintf (stderr, "%s: file `%s' has no symbols\n", whoami, a_out_name); | |
431 | done (1); | |
03c35bcb | 432 | } |
12516a37 KR |
433 | |
434 | /* the "+ 2" is for the sentinels: */ | |
435 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); | |
436 | ||
437 | /* pass 2 - create symbols: */ | |
438 | ||
439 | symtab.limit = symtab.base; | |
440 | for (i = 0; i < core_num_syms; ++i) | |
441 | { | |
442 | class = core_sym_class (core_syms[i]); | |
443 | if (!class) | |
444 | { | |
445 | DBG (AOUTDEBUG, | |
446 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
5489fcc3 | 447 | core_syms[i]->value, core_syms[i]->name)); |
12516a37 | 448 | continue; |
03c35bcb | 449 | } |
64c50fc5 JL |
450 | /* This should be replaced with a binary search or hashed |
451 | search. Gross. */ | |
452 | ||
453 | skip = 0; | |
454 | found = 0; | |
455 | for (j = 0; j < symbol_map_count; j++) | |
456 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
457 | { | |
458 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
459 | symbol_map [j - 1].file_name)) | |
460 | skip = 1; | |
461 | else | |
462 | found = j; | |
463 | break; | |
464 | } | |
465 | ||
466 | if (skip) | |
467 | continue; | |
5489fcc3 | 468 | |
12516a37 | 469 | sym_init (symtab.limit); |
5489fcc3 | 470 | |
12516a37 | 471 | /* symbol offsets are always section-relative: */ |
5489fcc3 | 472 | |
12516a37 | 473 | symtab.limit->addr = core_syms[i]->value + core_syms[i]->section->vma; |
64c50fc5 JL |
474 | if (symbol_map_count |
475 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) | |
476 | { | |
477 | symtab.limit->name = symbol_map[found].file_name; | |
478 | symtab.limit->mapped = 1; | |
479 | } | |
480 | else | |
481 | { | |
482 | symtab.limit->name = core_syms[i]->name; | |
483 | symtab.limit->mapped = 0; | |
484 | } | |
5489fcc3 | 485 | |
c3de2a19 ILT |
486 | /* Lookup filename and line number, if we can */ |
487 | ||
df928c8f ILT |
488 | { |
489 | const char *filename, *func_name; | |
490 | ||
491 | if (get_src_info (symtab.limit->addr, &filename, &func_name, | |
492 | &symtab.limit->line_num)) | |
493 | { | |
494 | symtab.limit->file = source_file_lookup_path (filename); | |
495 | ||
c3de2a19 ILT |
496 | /* FIXME: Checking __osf__ here does not work with a cross |
497 | gprof. */ | |
498 | #ifdef __osf__ | |
499 | /* | |
500 | * Suppress symbols that are not function names. This is | |
501 | * useful to suppress code-labels and aliases. | |
502 | * | |
503 | * This is known to be useful under DEC's OSF/1. Under SunOS 4.x, | |
504 | * labels do not appear in the symbol table info, so this isn't | |
505 | * necessary. | |
506 | */ | |
507 | ||
df928c8f ILT |
508 | if (strcmp (symtab.limit->name, func_name) != 0) |
509 | { | |
510 | /* | |
511 | * The symbol's address maps to a different name, so | |
512 | * it can't be a function-entry point. This happens | |
513 | * for labels, for example. | |
514 | */ | |
515 | DBG (AOUTDEBUG, | |
516 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
517 | symtab.limit->name, func_name)); | |
518 | continue; | |
519 | } | |
c3de2a19 | 520 | #endif |
df928c8f ILT |
521 | } |
522 | } | |
5489fcc3 | 523 | |
12516a37 KR |
524 | symtab.limit->is_func = TRUE; |
525 | symtab.limit->is_bb_head = TRUE; | |
526 | if (class == 't') | |
527 | { | |
528 | symtab.limit->is_static = TRUE; | |
03c35bcb | 529 | } |
12516a37 KR |
530 | |
531 | min_vma = MIN (symtab.limit->addr, min_vma); | |
532 | max_vma = MAX (symtab.limit->addr, max_vma); | |
533 | ||
534 | /* | |
535 | * If we see "main" without an initial '_', we assume names | |
536 | * are *not* prefixed by '_'. | |
537 | */ | |
538 | if (symtab.limit->name[0] == 'm' && discard_underscores | |
539 | && strcmp (symtab.limit->name, "main") == 0) | |
5489fcc3 | 540 | { |
12516a37 | 541 | discard_underscores = 0; |
03c35bcb | 542 | } |
5489fcc3 | 543 | |
12516a37 KR |
544 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", |
545 | (long) (symtab.limit - symtab.base), | |
5489fcc3 | 546 | symtab.limit->name, symtab.limit->addr)); |
12516a37 | 547 | ++symtab.limit; |
03c35bcb | 548 | } |
5489fcc3 | 549 | |
12516a37 | 550 | /* create sentinels: */ |
5489fcc3 | 551 | |
12516a37 KR |
552 | sym_init (symtab.limit); |
553 | symtab.limit->name = "<locore>"; | |
554 | symtab.limit->addr = 0; | |
555 | symtab.limit->end_addr = min_vma - 1; | |
556 | ++symtab.limit; | |
5489fcc3 | 557 | |
12516a37 KR |
558 | sym_init (symtab.limit); |
559 | symtab.limit->name = "<hicore>"; | |
560 | symtab.limit->addr = max_vma + 1; | |
561 | symtab.limit->end_addr = ~0; | |
562 | ++symtab.limit; | |
5489fcc3 | 563 | |
12516a37 KR |
564 | symtab.len = symtab.limit - symtab.base; |
565 | symtab_finalize (&symtab); | |
03c35bcb | 566 | } |
5489fcc3 KR |
567 | |
568 | ||
569 | /* | |
570 | * Read in symbol table from core. One symbol per line of source code | |
571 | * is entered. | |
572 | */ | |
573 | void | |
12516a37 | 574 | DEFUN (core_create_line_syms, (core_bfd), bfd * core_bfd) |
5489fcc3 | 575 | { |
12516a37 KR |
576 | char prev_name[PATH_MAX], prev_filename[PATH_MAX]; |
577 | bfd_vma vma, min_vma = ~0, max_vma = 0; | |
c3de2a19 | 578 | bfd_vma offset; |
12516a37 KR |
579 | Sym *prev, dummy, *sentinel, *sym; |
580 | const char *filename; | |
c3de2a19 | 581 | int prev_line_num; |
12516a37 KR |
582 | Sym_Table ltab; |
583 | /* | |
584 | * Create symbols for functions as usual. This is necessary in | |
585 | * cases where parts of a program were not compiled with -g. For | |
586 | * those parts we still want to get info at the function level: | |
587 | */ | |
588 | core_create_function_syms (core_bfd); | |
589 | ||
590 | /* pass 1 - counter number of symbols: */ | |
591 | ||
592 | /* | |
593 | * To find all line information, walk through all possible | |
594 | * text-space addresses (one by one!) and get the debugging | |
595 | * info for each address. When the debugging info changes, | |
596 | * it is time to create a new symbol. | |
597 | * | |
598 | * Of course, this is rather slow and it would be better if | |
c3de2a19 | 599 | * bfd would provide an iterator for enumerating all line infos |
12516a37 KR |
600 | */ |
601 | prev_name[0] = '\0'; | |
602 | ltab.len = 0; | |
12516a37 KR |
603 | prev_filename[0] = '\0'; |
604 | prev_line_num = 0; | |
c3de2a19 | 605 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) |
12516a37 KR |
606 | { |
607 | vma = core_text_sect->vma + offset; | |
608 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) | |
609 | || (prev_line_num == dummy.line_num && | |
610 | strcmp (prev_name, dummy.name) == 0 | |
611 | && strcmp (prev_filename, filename) == 0)) | |
5489fcc3 | 612 | { |
12516a37 | 613 | continue; |
03c35bcb | 614 | } |
12516a37 KR |
615 | |
616 | ++ltab.len; | |
617 | prev_line_num = dummy.line_num; | |
618 | strcpy (prev_name, dummy.name); | |
619 | strcpy (prev_filename, filename); | |
620 | ||
12516a37 KR |
621 | min_vma = MIN (vma, min_vma); |
622 | max_vma = MAX (vma, max_vma); | |
03c35bcb | 623 | } |
12516a37 | 624 | |
12516a37 KR |
625 | /* make room for function symbols, too: */ |
626 | ltab.len += symtab.len; | |
627 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
628 | ltab.limit = ltab.base; | |
629 | ||
630 | /* pass 2 - create symbols: */ | |
631 | ||
c3de2a19 ILT |
632 | /* We now set is_static as we go along, rather than by running |
633 | through the symbol table at the end. | |
634 | ||
635 | The old way called symtab_finalize before the is_static pass, | |
636 | causing a problem since symtab_finalize uses is_static as part of | |
637 | its address conflict resolution algorithm. Since global symbols | |
638 | were prefered over static symbols, and all line symbols were | |
639 | global at that point, static function names that conflicted with | |
640 | their own line numbers (static, but labeled as global) were | |
641 | rejected in favor of the line num. | |
642 | ||
643 | This was not the desired functionality. We always want to keep | |
644 | our function symbols and discard any conflicting line symbols. | |
645 | Perhaps symtab_finalize should be modified to make this | |
646 | distinction as well, but the current fix works and the code is a | |
647 | lot cleaner now. */ | |
648 | ||
12516a37 | 649 | prev = 0; |
c3de2a19 | 650 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) |
12516a37 KR |
651 | { |
652 | sym_init (ltab.limit); | |
653 | if (!get_src_info (core_text_sect->vma + offset, &filename, | |
654 | <ab.limit->name, <ab.limit->line_num) | |
655 | || (prev && prev->line_num == ltab.limit->line_num | |
656 | && strcmp (prev->name, ltab.limit->name) == 0 | |
657 | && strcmp (prev->file->name, filename) == 0)) | |
5489fcc3 | 658 | { |
12516a37 | 659 | continue; |
03c35bcb | 660 | } |
12516a37 KR |
661 | |
662 | /* make name pointer a malloc'ed string: */ | |
d75ea6de | 663 | ltab.limit->name = xstrdup (ltab.limit->name); |
12516a37 KR |
664 | ltab.limit->file = source_file_lookup_path (filename); |
665 | ||
666 | ltab.limit->addr = core_text_sect->vma + offset; | |
c3de2a19 ILT |
667 | |
668 | /* Set is_static based on the enclosing function, using either: | |
669 | * 1) the previous symbol, if it's from the same function, or | |
670 | * 2) a symtab lookup | |
671 | */ | |
672 | ||
673 | if (prev && ltab.limit->file == prev->file && | |
674 | strcmp (ltab.limit->name, prev->name) == 0) | |
675 | { | |
676 | ltab.limit->is_static = prev->is_static; | |
677 | } | |
678 | else | |
679 | { | |
680 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
681 | ltab.limit->is_static = sym->is_static; | |
682 | } | |
683 | ||
12516a37 KR |
684 | prev = ltab.limit; |
685 | ||
686 | /* | |
687 | * If we see "main" without an initial '_', we assume names | |
688 | * are *not* prefixed by '_'. | |
689 | */ | |
690 | if (ltab.limit->name[0] == 'm' && discard_underscores | |
691 | && strcmp (ltab.limit->name, "main") == 0) | |
692 | { | |
693 | discard_underscores = 0; | |
03c35bcb | 694 | } |
5489fcc3 | 695 | |
12516a37 | 696 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %d %s 0x%lx\n", |
c3de2a19 | 697 | ltab.limit - ltab.base, ltab.limit->name, |
5489fcc3 | 698 | ltab.limit->addr)); |
12516a37 | 699 | ++ltab.limit; |
03c35bcb | 700 | } |
12516a37 KR |
701 | |
702 | /* update sentinels: */ | |
703 | ||
704 | sentinel = sym_lookup (&symtab, 0); | |
705 | if (strcmp (sentinel->name, "<locore>") == 0 | |
706 | && min_vma <= sentinel->end_addr) | |
707 | { | |
708 | sentinel->end_addr = min_vma - 1; | |
03c35bcb | 709 | } |
12516a37 KR |
710 | |
711 | sentinel = sym_lookup (&symtab, ~0); | |
712 | if (strcmp (sentinel->name, "<hicore>") == 0 && max_vma >= sentinel->addr) | |
713 | { | |
714 | sentinel->addr = max_vma + 1; | |
03c35bcb | 715 | } |
5489fcc3 | 716 | |
12516a37 KR |
717 | /* copy in function symbols: */ |
718 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); | |
719 | ltab.limit += symtab.len; | |
5489fcc3 | 720 | |
12516a37 | 721 | if (ltab.limit - ltab.base != ltab.len) |
5489fcc3 | 722 | { |
12516a37 | 723 | fprintf (stderr, |
c3de2a19 ILT |
724 | "%s: somebody miscounted: ltab.len=%d instead of %ld\n", |
725 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
12516a37 | 726 | done (1); |
03c35bcb | 727 | } |
12516a37 KR |
728 | |
729 | /* finalize ltab and make it symbol table: */ | |
730 | ||
731 | symtab_finalize (<ab); | |
732 | free (symtab.base); | |
733 | symtab = ltab; | |
734 | ||
03c35bcb | 735 | } |