Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
ec0806ec | 3 | Copyright 2000, 2001, 2002 Free Software Foundation, Inc. |
ef368dac NC |
4 | |
5 | This file is part of GNU Binutils. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | \f | |
252b5132 RH |
22 | #include "libiberty.h" |
23 | #include "gprof.h" | |
24 | #include "corefile.h" | |
25 | #include "symtab.h" | |
26 | ||
27 | bfd *core_bfd; | |
28 | int core_num_syms; | |
29 | asymbol **core_syms; | |
30 | asection *core_text_sect; | |
31 | PTR core_text_space; | |
32 | ||
33 | int min_insn_size; | |
34 | int offset_to_code; | |
35 | ||
36 | /* For mapping symbols to specific .o files during file ordering. */ | |
ef368dac NC |
37 | struct function_map |
38 | { | |
252b5132 RH |
39 | char *function_name; |
40 | char *file_name; | |
41 | }; | |
42 | ||
43 | struct function_map *symbol_map; | |
44 | unsigned int symbol_map_count; | |
45 | ||
ef368dac | 46 | extern void i386_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
252b5132 | 47 | extern void alpha_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
ef368dac | 48 | extern void vax_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
252b5132 RH |
49 | extern void tahoe_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
50 | extern void sparc_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
ec0806ec | 51 | extern void mips_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
252b5132 RH |
52 | |
53 | static void | |
54 | DEFUN (read_function_mappings, (filename), const char *filename) | |
55 | { | |
56 | FILE *file = fopen (filename, "r"); | |
57 | char dummy[1024]; | |
58 | int count = 0; | |
59 | ||
60 | if (!file) | |
61 | { | |
62 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
63 | done (1); | |
64 | } | |
65 | ||
66 | /* First parse the mapping file so we know how big we need to | |
67 | make our tables. We also do some sanity checks at this | |
68 | time. */ | |
69 | while (!feof (file)) | |
70 | { | |
71 | int matches; | |
72 | ||
73 | matches = fscanf (file, "%[^\n:]", dummy); | |
74 | if (!matches) | |
75 | { | |
76 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), | |
77 | whoami, filename); | |
78 | done (1); | |
79 | } | |
80 | ||
81 | /* Just skip messages about files with no symbols. */ | |
82 | if (!strncmp (dummy, "No symbols in ", 14)) | |
83 | { | |
84 | fscanf (file, "\n"); | |
85 | continue; | |
86 | } | |
87 | ||
88 | /* Don't care what else is on this line at this point. */ | |
89 | fscanf (file, "%[^\n]\n", dummy); | |
90 | count++; | |
91 | } | |
92 | ||
93 | /* Now we know how big we need to make our table. */ | |
94 | symbol_map = ((struct function_map *) | |
95 | xmalloc (count * sizeof (struct function_map))); | |
96 | ||
97 | /* Rewind the input file so we can read it again. */ | |
98 | rewind (file); | |
99 | ||
100 | /* Read each entry and put it into the table. */ | |
101 | count = 0; | |
102 | while (!feof (file)) | |
103 | { | |
104 | int matches; | |
105 | char *tmp; | |
106 | ||
107 | matches = fscanf (file, "%[^\n:]", dummy); | |
108 | if (!matches) | |
109 | { | |
110 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), | |
111 | whoami, filename); | |
112 | done (1); | |
113 | } | |
114 | ||
115 | /* Just skip messages about files with no symbols. */ | |
116 | if (!strncmp (dummy, "No symbols in ", 14)) | |
117 | { | |
118 | fscanf (file, "\n"); | |
119 | continue; | |
120 | } | |
121 | ||
122 | /* dummy has the filename, go ahead and copy it. */ | |
123 | symbol_map[count].file_name = xmalloc (strlen (dummy) + 1); | |
124 | strcpy (symbol_map[count].file_name, dummy); | |
125 | ||
126 | /* Now we need the function name. */ | |
127 | fscanf (file, "%[^\n]\n", dummy); | |
128 | tmp = strrchr (dummy, ' ') + 1; | |
129 | symbol_map[count].function_name = xmalloc (strlen (tmp) + 1); | |
130 | strcpy (symbol_map[count].function_name, tmp); | |
131 | count++; | |
132 | } | |
133 | ||
134 | /* Record the size of the map table for future reference. */ | |
135 | symbol_map_count = count; | |
136 | } | |
137 | ||
ef368dac | 138 | |
252b5132 RH |
139 | void |
140 | DEFUN (core_init, (a_out_name), const char *a_out_name) | |
141 | { | |
142 | core_bfd = bfd_openr (a_out_name, 0); | |
143 | ||
144 | if (!core_bfd) | |
145 | { | |
146 | perror (a_out_name); | |
147 | done (1); | |
148 | } | |
149 | ||
150 | if (!bfd_check_format (core_bfd, bfd_object)) | |
151 | { | |
152 | fprintf (stderr, _("%s: %s: not in a.out format\n"), whoami, a_out_name); | |
153 | done (1); | |
154 | } | |
155 | ||
ef368dac | 156 | /* Get core's text section. */ |
252b5132 RH |
157 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
158 | if (!core_text_sect) | |
159 | { | |
160 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
161 | if (!core_text_sect) | |
162 | { | |
163 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
164 | whoami, a_out_name); | |
165 | done (1); | |
166 | } | |
167 | } | |
168 | ||
ef368dac | 169 | /* Read core's symbol table. */ |
252b5132 | 170 | |
ef368dac | 171 | /* This will probably give us more than we need, but that's ok. */ |
252b5132 RH |
172 | core_num_syms = bfd_get_symtab_upper_bound (core_bfd); |
173 | if (core_num_syms < 0) | |
174 | { | |
175 | fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name, | |
176 | bfd_errmsg (bfd_get_error ())); | |
177 | done (1); | |
178 | } | |
179 | ||
180 | core_syms = (asymbol **) xmalloc (core_num_syms); | |
181 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); | |
0eee5820 | 182 | |
252b5132 RH |
183 | if (core_num_syms < 0) |
184 | { | |
185 | fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name, | |
186 | bfd_errmsg (bfd_get_error ())); | |
187 | done (1); | |
188 | } | |
189 | ||
190 | min_insn_size = 1; | |
191 | offset_to_code = 0; | |
192 | ||
193 | switch (bfd_get_arch (core_bfd)) | |
194 | { | |
195 | case bfd_arch_vax: | |
196 | case bfd_arch_tahoe: | |
197 | offset_to_code = 2; | |
198 | break; | |
199 | ||
200 | case bfd_arch_alpha: | |
201 | min_insn_size = 4; | |
202 | break; | |
203 | ||
204 | default: | |
205 | break; | |
206 | } | |
207 | ||
208 | if (function_mapping_file) | |
209 | read_function_mappings (function_mapping_file); | |
210 | } | |
211 | ||
ef368dac | 212 | /* Read in the text space of an a.out file. */ |
252b5132 | 213 | |
252b5132 RH |
214 | void |
215 | DEFUN (core_get_text_space, (core_bfd), bfd * core_bfd) | |
216 | { | |
217 | core_text_space = (PTR) malloc (core_text_sect->_raw_size); | |
218 | ||
219 | if (!core_text_space) | |
220 | { | |
fdcf7d43 ILT |
221 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
222 | whoami, (unsigned long) core_text_sect->_raw_size); | |
252b5132 RH |
223 | done (1); |
224 | } | |
0eee5820 | 225 | |
252b5132 RH |
226 | if (!bfd_get_section_contents (core_bfd, core_text_sect, core_text_space, |
227 | 0, core_text_sect->_raw_size)) | |
228 | { | |
229 | bfd_perror ("bfd_get_section_contents"); | |
230 | free (core_text_space); | |
231 | core_text_space = 0; | |
232 | } | |
0eee5820 | 233 | |
252b5132 | 234 | if (!core_text_space) |
ef368dac | 235 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
236 | } |
237 | ||
238 | ||
239 | void | |
240 | DEFUN (find_call, (parent, p_lowpc, p_highpc), | |
241 | Sym * parent AND bfd_vma p_lowpc AND bfd_vma p_highpc) | |
242 | { | |
243 | switch (bfd_get_arch (core_bfd)) | |
244 | { | |
245 | case bfd_arch_i386: | |
246 | i386_find_call (parent, p_lowpc, p_highpc); | |
247 | break; | |
248 | ||
249 | case bfd_arch_alpha: | |
250 | alpha_find_call (parent, p_lowpc, p_highpc); | |
251 | break; | |
252 | ||
253 | case bfd_arch_vax: | |
254 | vax_find_call (parent, p_lowpc, p_highpc); | |
255 | break; | |
256 | ||
257 | case bfd_arch_sparc: | |
258 | sparc_find_call (parent, p_lowpc, p_highpc); | |
259 | break; | |
260 | ||
261 | case bfd_arch_tahoe: | |
262 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
263 | break; | |
264 | ||
ec0806ec JT |
265 | case bfd_arch_mips: |
266 | mips_find_call (parent, p_lowpc, p_highpc); | |
267 | break; | |
268 | ||
252b5132 RH |
269 | default: |
270 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
271 | whoami, bfd_printable_name(core_bfd)); | |
272 | ||
273 | /* Don't give the error more than once. */ | |
274 | ignore_direct_calls = FALSE; | |
275 | } | |
276 | } | |
277 | ||
ef368dac | 278 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
279 | 0 -> symbol is not interesting to us |
280 | 'T' -> symbol is a global name | |
281 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 282 | |
252b5132 RH |
283 | static int |
284 | DEFUN (core_sym_class, (sym), asymbol * sym) | |
285 | { | |
286 | symbol_info syminfo; | |
287 | const char *name; | |
288 | char sym_prefix; | |
289 | int i; | |
290 | ||
291 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 292 | return 0; |
252b5132 | 293 | |
ef368dac NC |
294 | /* Must be a text symbol, and static text symbols |
295 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
296 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
297 | { | |
298 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
299 | sym->name)); | |
300 | return 0; | |
301 | } | |
302 | ||
303 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
304 | i = syminfo.type; | |
305 | ||
306 | if (i == 'T') | |
ef368dac | 307 | return i; /* It's a global symbol. */ |
252b5132 RH |
308 | |
309 | if (i == 'W') | |
ef368dac NC |
310 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
311 | also be a data symbol. */ | |
312 | return 'T'; | |
252b5132 RH |
313 | |
314 | if (i != 't') | |
315 | { | |
ef368dac | 316 | /* Not a static text symbol. */ |
252b5132 RH |
317 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
318 | sym->name, i)); | |
319 | return 0; | |
320 | } | |
321 | ||
ef368dac | 322 | /* Do some more filtering on static function-names. */ |
252b5132 | 323 | if (ignore_static_funcs) |
ef368dac NC |
324 | return 0; |
325 | ||
326 | /* Can't zero-length name or funny characters in name, where | |
327 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 328 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 329 | return 0; |
252b5132 RH |
330 | |
331 | for (name = sym->name; *name; ++name) | |
332 | { | |
333 | if (*name == '.' || *name == '$') | |
ef368dac NC |
334 | return 0; |
335 | } | |
0eee5820 | 336 | |
ef368dac NC |
337 | /* On systems where the C compiler adds an underscore to all |
338 | names, static names without underscores seem usually to be | |
339 | labels in hand written assembler in the library. We don't want | |
340 | these names. This is certainly necessary on a Sparc running | |
341 | SunOS 4.1 (try profiling a program that does a lot of | |
342 | division). I don't know whether it has harmful side effects on | |
343 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 344 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 345 | |
252b5132 | 346 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 347 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 348 | language. We want to ignore these, since sometimes they mask |
ef368dac | 349 | the real function. (dj@ctron) */ |
252b5132 RH |
350 | || !strncmp (sym->name, "__gnu_compiled", 14) |
351 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
352 | { | |
353 | return 0; | |
354 | } | |
355 | ||
ef368dac NC |
356 | /* If the object file supports marking of function symbols, then |
357 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
358 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
359 | return 0; | |
360 | ||
ef368dac | 361 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
362 | } |
363 | ||
ef368dac | 364 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 365 | |
252b5132 RH |
366 | static bool |
367 | DEFUN (get_src_info, (addr, filename, name, line_num), | |
368 | bfd_vma addr AND const char **filename AND const char **name | |
369 | AND int *line_num) | |
370 | { | |
371 | const char *fname = 0, *func_name = 0; | |
372 | int l = 0; | |
373 | ||
374 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
375 | addr - core_text_sect->vma, | |
376 | &fname, &func_name, (unsigned int *) &l) | |
377 | && fname && func_name && l) | |
378 | { | |
379 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 380 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
381 | *filename = fname; |
382 | *name = func_name; | |
383 | *line_num = l; | |
384 | return TRUE; | |
385 | } | |
386 | else | |
387 | { | |
388 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
389 | (long) addr, fname ? fname : "<unknown>", l, | |
390 | func_name ? func_name : "<unknown>")); | |
391 | return FALSE; | |
392 | } | |
393 | } | |
394 | ||
ef368dac NC |
395 | /* Read in symbol table from core. |
396 | One symbol per function is entered. */ | |
252b5132 | 397 | |
252b5132 | 398 | void |
8622e41b ILT |
399 | core_create_function_syms (core_bfd) |
400 | bfd *core_bfd ATTRIBUTE_UNUSED; | |
252b5132 RH |
401 | { |
402 | bfd_vma min_vma = ~0, max_vma = 0; | |
403 | int class; | |
404 | long i, found, skip; | |
405 | unsigned int j; | |
406 | ||
ef368dac | 407 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 408 | symtab.len = 0; |
0eee5820 | 409 | |
252b5132 RH |
410 | for (i = 0; i < core_num_syms; ++i) |
411 | { | |
412 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 413 | continue; |
252b5132 RH |
414 | |
415 | /* This should be replaced with a binary search or hashed | |
0eee5820 | 416 | search. Gross. |
252b5132 RH |
417 | |
418 | Don't create a symtab entry for a function that has | |
419 | a mapping to a file, unless it's the first function | |
420 | in the file. */ | |
421 | skip = 0; | |
422 | for (j = 0; j < symbol_map_count; j++) | |
423 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
424 | { | |
425 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 426 | symbol_map [j - 1].file_name)) |
252b5132 RH |
427 | skip = 1; |
428 | break; | |
429 | } | |
0eee5820 | 430 | |
252b5132 | 431 | if (!skip) |
0eee5820 | 432 | ++symtab.len; |
252b5132 RH |
433 | } |
434 | ||
435 | if (symtab.len == 0) | |
436 | { | |
437 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
438 | done (1); | |
439 | } | |
440 | ||
ef368dac | 441 | /* The "+ 2" is for the sentinels. */ |
252b5132 RH |
442 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); |
443 | ||
ef368dac | 444 | /* Pass 2 - create symbols. */ |
252b5132 | 445 | symtab.limit = symtab.base; |
0eee5820 | 446 | |
252b5132 RH |
447 | for (i = 0; i < core_num_syms; ++i) |
448 | { | |
449 | class = core_sym_class (core_syms[i]); | |
0eee5820 | 450 | |
252b5132 RH |
451 | if (!class) |
452 | { | |
453 | DBG (AOUTDEBUG, | |
454 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
455 | (unsigned long) core_syms[i]->value, |
456 | core_syms[i]->name)); | |
252b5132 RH |
457 | continue; |
458 | } | |
0eee5820 | 459 | |
252b5132 RH |
460 | /* This should be replaced with a binary search or hashed |
461 | search. Gross. */ | |
252b5132 RH |
462 | skip = 0; |
463 | found = 0; | |
0eee5820 | 464 | |
252b5132 RH |
465 | for (j = 0; j < symbol_map_count; j++) |
466 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
467 | { | |
468 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 469 | symbol_map [j - 1].file_name)) |
252b5132 RH |
470 | skip = 1; |
471 | else | |
472 | found = j; | |
473 | break; | |
474 | } | |
475 | ||
476 | if (skip) | |
477 | continue; | |
478 | ||
479 | sym_init (symtab.limit); | |
480 | ||
ef368dac | 481 | /* Symbol offsets are always section-relative. */ |
252b5132 | 482 | symtab.limit->addr = core_syms[i]->value + core_syms[i]->section->vma; |
0eee5820 | 483 | |
252b5132 RH |
484 | if (symbol_map_count |
485 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) | |
486 | { | |
487 | symtab.limit->name = symbol_map[found].file_name; | |
488 | symtab.limit->mapped = 1; | |
489 | } | |
490 | else | |
491 | { | |
492 | symtab.limit->name = core_syms[i]->name; | |
493 | symtab.limit->mapped = 0; | |
494 | } | |
495 | ||
ef368dac | 496 | /* Lookup filename and line number, if we can. */ |
252b5132 RH |
497 | { |
498 | const char *filename, *func_name; | |
0eee5820 | 499 | |
252b5132 RH |
500 | if (get_src_info (symtab.limit->addr, &filename, &func_name, |
501 | &symtab.limit->line_num)) | |
502 | { | |
503 | symtab.limit->file = source_file_lookup_path (filename); | |
504 | ||
505 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 506 | gprof. */ |
252b5132 | 507 | #ifdef __osf__ |
ef368dac NC |
508 | /* Suppress symbols that are not function names. This is |
509 | useful to suppress code-labels and aliases. | |
0eee5820 | 510 | |
ef368dac NC |
511 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
512 | labels do not appear in the symbol table info, so this isn't | |
513 | necessary. */ | |
252b5132 RH |
514 | |
515 | if (strcmp (symtab.limit->name, func_name) != 0) | |
516 | { | |
ef368dac NC |
517 | /* The symbol's address maps to a different name, so |
518 | it can't be a function-entry point. This happens | |
519 | for labels, for example. */ | |
252b5132 RH |
520 | DBG (AOUTDEBUG, |
521 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
522 | symtab.limit->name, func_name)); | |
523 | continue; | |
524 | } | |
525 | #endif | |
526 | } | |
527 | } | |
528 | ||
529 | symtab.limit->is_func = TRUE; | |
530 | symtab.limit->is_bb_head = TRUE; | |
0eee5820 | 531 | |
252b5132 | 532 | if (class == 't') |
ef368dac | 533 | symtab.limit->is_static = TRUE; |
252b5132 RH |
534 | |
535 | min_vma = MIN (symtab.limit->addr, min_vma); | |
536 | max_vma = MAX (symtab.limit->addr, max_vma); | |
537 | ||
ef368dac | 538 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 539 | are *not* prefixed by '_'. */ |
252b5132 RH |
540 | if (symtab.limit->name[0] == 'm' && discard_underscores |
541 | && strcmp (symtab.limit->name, "main") == 0) | |
ef368dac | 542 | discard_underscores = 0; |
252b5132 RH |
543 | |
544 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", | |
545 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
546 | symtab.limit->name, |
547 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
548 | ++symtab.limit; |
549 | } | |
550 | ||
ef368dac | 551 | /* Create sentinels. */ |
252b5132 RH |
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; | |
557 | ||
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; | |
563 | ||
564 | symtab.len = symtab.limit - symtab.base; | |
565 | symtab_finalize (&symtab); | |
566 | } | |
567 | ||
ef368dac NC |
568 | /* Read in symbol table from core. |
569 | One symbol per line of source code is entered. */ | |
252b5132 | 570 | |
252b5132 RH |
571 | void |
572 | DEFUN (core_create_line_syms, (core_bfd), bfd * core_bfd) | |
573 | { | |
574 | char *prev_name, *prev_filename; | |
575 | int prev_name_len, prev_filename_len; | |
576 | bfd_vma vma, min_vma = ~0, max_vma = 0; | |
577 | bfd_vma offset; | |
578 | Sym *prev, dummy, *sentinel, *sym; | |
579 | const char *filename; | |
580 | int prev_line_num; | |
581 | Sym_Table ltab; | |
0eee5820 | 582 | |
ef368dac NC |
583 | /* Create symbols for functions as usual. This is necessary in |
584 | cases where parts of a program were not compiled with -g. For | |
585 | those parts we still want to get info at the function level. */ | |
252b5132 RH |
586 | core_create_function_syms (core_bfd); |
587 | ||
ef368dac NC |
588 | /* Pass 1 - counter number of symbols. */ |
589 | ||
590 | /* To find all line information, walk through all possible | |
591 | text-space addresses (one by one!) and get the debugging | |
592 | info for each address. When the debugging info changes, | |
593 | it is time to create a new symbol. | |
0eee5820 | 594 | |
ef368dac NC |
595 | Of course, this is rather slow and it would be better if |
596 | bfd would provide an iterator for enumerating all line infos. */ | |
252b5132 RH |
597 | prev_name_len = PATH_MAX; |
598 | prev_filename_len = PATH_MAX; | |
599 | prev_name = xmalloc (prev_name_len); | |
600 | prev_filename = xmalloc (prev_filename_len); | |
601 | ltab.len = 0; | |
602 | prev_line_num = 0; | |
0eee5820 | 603 | |
252b5132 RH |
604 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) |
605 | { | |
606 | int len; | |
607 | ||
608 | vma = core_text_sect->vma + offset; | |
0eee5820 | 609 | |
252b5132 RH |
610 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
611 | || (prev_line_num == dummy.line_num | |
612 | && prev_name != NULL | |
613 | && strcmp (prev_name, dummy.name) == 0 | |
614 | && strcmp (prev_filename, filename) == 0)) | |
ef368dac | 615 | continue; |
252b5132 RH |
616 | |
617 | ++ltab.len; | |
618 | prev_line_num = dummy.line_num; | |
619 | ||
620 | len = strlen (dummy.name); | |
621 | if (len >= prev_name_len) | |
622 | { | |
623 | prev_name_len = len + 1024; | |
624 | free (prev_name); | |
625 | prev_name = xmalloc (prev_name_len); | |
626 | } | |
0eee5820 | 627 | |
252b5132 | 628 | strcpy (prev_name, dummy.name); |
252b5132 | 629 | len = strlen (filename); |
0eee5820 | 630 | |
252b5132 RH |
631 | if (len >= prev_filename_len) |
632 | { | |
633 | prev_filename_len = len + 1024; | |
634 | free (prev_filename); | |
635 | prev_filename = xmalloc (prev_filename_len); | |
636 | } | |
0eee5820 | 637 | |
252b5132 RH |
638 | strcpy (prev_filename, filename); |
639 | ||
640 | min_vma = MIN (vma, min_vma); | |
641 | max_vma = MAX (vma, max_vma); | |
642 | } | |
643 | ||
644 | free (prev_name); | |
645 | free (prev_filename); | |
646 | ||
ef368dac | 647 | /* Make room for function symbols, too. */ |
252b5132 RH |
648 | ltab.len += symtab.len; |
649 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
650 | ltab.limit = ltab.base; | |
651 | ||
ef368dac | 652 | /* Pass 2 - create symbols. */ |
252b5132 RH |
653 | |
654 | /* We now set is_static as we go along, rather than by running | |
655 | through the symbol table at the end. | |
656 | ||
657 | The old way called symtab_finalize before the is_static pass, | |
658 | causing a problem since symtab_finalize uses is_static as part of | |
659 | its address conflict resolution algorithm. Since global symbols | |
660 | were prefered over static symbols, and all line symbols were | |
661 | global at that point, static function names that conflicted with | |
662 | their own line numbers (static, but labeled as global) were | |
663 | rejected in favor of the line num. | |
664 | ||
665 | This was not the desired functionality. We always want to keep | |
666 | our function symbols and discard any conflicting line symbols. | |
667 | Perhaps symtab_finalize should be modified to make this | |
668 | distinction as well, but the current fix works and the code is a | |
669 | lot cleaner now. */ | |
252b5132 | 670 | prev = 0; |
0eee5820 | 671 | |
252b5132 RH |
672 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) |
673 | { | |
674 | sym_init (ltab.limit); | |
0eee5820 | 675 | |
252b5132 RH |
676 | if (!get_src_info (core_text_sect->vma + offset, &filename, |
677 | <ab.limit->name, <ab.limit->line_num) | |
678 | || (prev && prev->line_num == ltab.limit->line_num | |
679 | && strcmp (prev->name, ltab.limit->name) == 0 | |
680 | && strcmp (prev->file->name, filename) == 0)) | |
ef368dac | 681 | continue; |
252b5132 | 682 | |
ef368dac | 683 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
684 | ltab.limit->name = xstrdup (ltab.limit->name); |
685 | ltab.limit->file = source_file_lookup_path (filename); | |
686 | ||
687 | ltab.limit->addr = core_text_sect->vma + offset; | |
688 | ||
689 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
690 | 1) the previous symbol, if it's from the same function, or |
691 | 2) a symtab lookup. */ | |
252b5132 RH |
692 | if (prev && ltab.limit->file == prev->file && |
693 | strcmp (ltab.limit->name, prev->name) == 0) | |
694 | { | |
695 | ltab.limit->is_static = prev->is_static; | |
696 | } | |
697 | else | |
698 | { | |
699 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
700 | ltab.limit->is_static = sym->is_static; | |
701 | } | |
702 | ||
703 | prev = ltab.limit; | |
704 | ||
ef368dac | 705 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 706 | are *not* prefixed by '_'. */ |
252b5132 RH |
707 | if (ltab.limit->name[0] == 'm' && discard_underscores |
708 | && strcmp (ltab.limit->name, "main") == 0) | |
ef368dac | 709 | discard_underscores = 0; |
252b5132 | 710 | |
4a607dcc ILT |
711 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
712 | (unsigned long) (ltab.limit - ltab.base), | |
713 | ltab.limit->name, | |
fdcf7d43 | 714 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
715 | ++ltab.limit; |
716 | } | |
717 | ||
ef368dac | 718 | /* Update sentinels. */ |
252b5132 | 719 | sentinel = sym_lookup (&symtab, 0); |
0eee5820 | 720 | |
252b5132 RH |
721 | if (strcmp (sentinel->name, "<locore>") == 0 |
722 | && min_vma <= sentinel->end_addr) | |
ef368dac | 723 | sentinel->end_addr = min_vma - 1; |
252b5132 RH |
724 | |
725 | sentinel = sym_lookup (&symtab, ~0); | |
0eee5820 | 726 | |
252b5132 | 727 | if (strcmp (sentinel->name, "<hicore>") == 0 && max_vma >= sentinel->addr) |
ef368dac | 728 | sentinel->addr = max_vma + 1; |
252b5132 | 729 | |
ef368dac | 730 | /* Copy in function symbols. */ |
252b5132 RH |
731 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
732 | ltab.limit += symtab.len; | |
733 | ||
734 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
735 | { | |
736 | fprintf (stderr, | |
737 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
738 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
739 | done (1); | |
740 | } | |
741 | ||
ef368dac | 742 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
743 | symtab_finalize (<ab); |
744 | free (symtab.base); | |
745 | symtab = ltab; | |
252b5132 | 746 | } |