Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
1ad40a04 | 3 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, |
d165016d | 4 | 2010, 2011, 2012 Free Software Foundation, Inc. |
ef368dac NC |
5 | |
6 | This file is part of GNU Binutils. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
651dbc76 | 10 | the Free Software Foundation; either version 3 of the License, or |
ef368dac NC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
44eb1801 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
ef368dac | 22 | \f |
252b5132 | 23 | #include "gprof.h" |
ecba005f | 24 | #include "libiberty.h" |
aee9ba6f | 25 | #include "filenames.h" |
6d9c411a AM |
26 | #include "search_list.h" |
27 | #include "source.h" | |
252b5132 | 28 | #include "symtab.h" |
b3296dc5 | 29 | #include "hist.h" |
6d9c411a | 30 | #include "corefile.h" |
3289fe0c | 31 | #include "safe-ctype.h" |
252b5132 RH |
32 | |
33 | bfd *core_bfd; | |
9e972ca0 BE |
34 | static int core_num_syms; |
35 | static asymbol **core_syms; | |
252b5132 | 36 | asection *core_text_sect; |
0e27a8f6 | 37 | void * core_text_space; |
252b5132 | 38 | |
9e972ca0 | 39 | static int min_insn_size; |
252b5132 RH |
40 | int offset_to_code; |
41 | ||
42 | /* For mapping symbols to specific .o files during file ordering. */ | |
0e27a8f6 | 43 | struct function_map * symbol_map; |
252b5132 RH |
44 | unsigned int symbol_map_count; |
45 | ||
3e8f6abf BE |
46 | static void read_function_mappings (const char *); |
47 | static int core_sym_class (asymbol *); | |
b34976b6 | 48 | static bfd_boolean get_src_info |
3e8f6abf | 49 | (bfd_vma, const char **, const char **, int *); |
1355568a | 50 | |
3e8f6abf BE |
51 | extern void i386_find_call (Sym *, bfd_vma, bfd_vma); |
52 | extern void alpha_find_call (Sym *, bfd_vma, bfd_vma); | |
53 | extern void vax_find_call (Sym *, bfd_vma, bfd_vma); | |
54 | extern void tahoe_find_call (Sym *, bfd_vma, bfd_vma); | |
55 | extern void sparc_find_call (Sym *, bfd_vma, bfd_vma); | |
56 | extern void mips_find_call (Sym *, bfd_vma, bfd_vma); | |
252b5132 | 57 | |
74335607 BE |
58 | static void |
59 | parse_error (const char *filename) | |
60 | { | |
61 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), whoami, filename); | |
62 | done (1); | |
63 | } | |
64 | ||
e7e981d6 NC |
65 | /* Compare two function_map structs based on function name. |
66 | We want to sort in ascending order. */ | |
67 | ||
68 | static int | |
69 | cmp_symbol_map (const void * l, const void * r) | |
70 | { | |
d165016d | 71 | return strcmp (((struct function_map *) l)->function_name, |
e7e981d6 NC |
72 | ((struct function_map *) r)->function_name); |
73 | } | |
74 | ||
252b5132 | 75 | static void |
3e8f6abf | 76 | read_function_mappings (const char *filename) |
252b5132 | 77 | { |
e7e981d6 | 78 | FILE * file = fopen (filename, "r"); |
252b5132 RH |
79 | char dummy[1024]; |
80 | int count = 0; | |
e7e981d6 | 81 | unsigned int i; |
252b5132 RH |
82 | |
83 | if (!file) | |
84 | { | |
85 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
86 | done (1); | |
87 | } | |
88 | ||
89 | /* First parse the mapping file so we know how big we need to | |
90 | make our tables. We also do some sanity checks at this | |
91 | time. */ | |
92 | while (!feof (file)) | |
93 | { | |
94 | int matches; | |
95 | ||
96 | matches = fscanf (file, "%[^\n:]", dummy); | |
97 | if (!matches) | |
74335607 | 98 | parse_error (filename); |
252b5132 RH |
99 | |
100 | /* Just skip messages about files with no symbols. */ | |
101 | if (!strncmp (dummy, "No symbols in ", 14)) | |
102 | { | |
74335607 BE |
103 | matches = fscanf (file, "\n"); |
104 | if (matches == EOF) | |
105 | parse_error (filename); | |
252b5132 RH |
106 | continue; |
107 | } | |
108 | ||
109 | /* Don't care what else is on this line at this point. */ | |
74335607 BE |
110 | matches = fscanf (file, "%[^\n]\n", dummy); |
111 | if (!matches) | |
112 | parse_error (filename); | |
252b5132 RH |
113 | count++; |
114 | } | |
115 | ||
116 | /* Now we know how big we need to make our table. */ | |
117 | symbol_map = ((struct function_map *) | |
118 | xmalloc (count * sizeof (struct function_map))); | |
119 | ||
120 | /* Rewind the input file so we can read it again. */ | |
121 | rewind (file); | |
122 | ||
123 | /* Read each entry and put it into the table. */ | |
124 | count = 0; | |
125 | while (!feof (file)) | |
126 | { | |
127 | int matches; | |
128 | char *tmp; | |
129 | ||
130 | matches = fscanf (file, "%[^\n:]", dummy); | |
131 | if (!matches) | |
74335607 | 132 | parse_error (filename); |
252b5132 RH |
133 | |
134 | /* Just skip messages about files with no symbols. */ | |
135 | if (!strncmp (dummy, "No symbols in ", 14)) | |
136 | { | |
74335607 BE |
137 | matches = fscanf (file, "\n"); |
138 | if (matches == EOF) | |
139 | parse_error (filename); | |
252b5132 RH |
140 | continue; |
141 | } | |
142 | ||
143 | /* dummy has the filename, go ahead and copy it. */ | |
1e9cc1c2 | 144 | symbol_map[count].file_name = (char *) xmalloc (strlen (dummy) + 1); |
252b5132 RH |
145 | strcpy (symbol_map[count].file_name, dummy); |
146 | ||
147 | /* Now we need the function name. */ | |
74335607 BE |
148 | matches = fscanf (file, "%[^\n]\n", dummy); |
149 | if (!matches) | |
150 | parse_error (filename); | |
252b5132 | 151 | tmp = strrchr (dummy, ' ') + 1; |
1e9cc1c2 | 152 | symbol_map[count].function_name = (char *) xmalloc (strlen (tmp) + 1); |
252b5132 RH |
153 | strcpy (symbol_map[count].function_name, tmp); |
154 | count++; | |
155 | } | |
156 | ||
157 | /* Record the size of the map table for future reference. */ | |
158 | symbol_map_count = count; | |
252b5132 | 159 | |
e7e981d6 | 160 | for (i = 0; i < symbol_map_count; ++i) |
aee9ba6f KT |
161 | if (i == 0 |
162 | || filename_cmp (symbol_map[i].file_name, symbol_map[i - 1].file_name)) | |
e7e981d6 NC |
163 | symbol_map[i].is_first = 1; |
164 | ||
165 | qsort (symbol_map, symbol_map_count, sizeof (struct function_map), cmp_symbol_map); | |
166 | } | |
ef368dac | 167 | |
252b5132 | 168 | void |
e7e981d6 | 169 | core_init (const char * aout_name) |
252b5132 | 170 | { |
37b1bfcd | 171 | int core_sym_bytes; |
2f041bf7 AM |
172 | asymbol *synthsyms; |
173 | long synth_count; | |
174 | ||
1355568a | 175 | core_bfd = bfd_openr (aout_name, 0); |
252b5132 RH |
176 | |
177 | if (!core_bfd) | |
178 | { | |
1355568a | 179 | perror (aout_name); |
252b5132 RH |
180 | done (1); |
181 | } | |
182 | ||
183 | if (!bfd_check_format (core_bfd, bfd_object)) | |
184 | { | |
11010f5a | 185 | fprintf (stderr, _("%s: %s: not in executable format\n"), whoami, aout_name); |
252b5132 RH |
186 | done (1); |
187 | } | |
188 | ||
ef368dac | 189 | /* Get core's text section. */ |
252b5132 RH |
190 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
191 | if (!core_text_sect) | |
192 | { | |
193 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
194 | if (!core_text_sect) | |
195 | { | |
196 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
1355568a | 197 | whoami, aout_name); |
252b5132 RH |
198 | done (1); |
199 | } | |
200 | } | |
201 | ||
ef368dac | 202 | /* Read core's symbol table. */ |
252b5132 | 203 | |
ef368dac | 204 | /* This will probably give us more than we need, but that's ok. */ |
37b1bfcd BE |
205 | core_sym_bytes = bfd_get_symtab_upper_bound (core_bfd); |
206 | if (core_sym_bytes < 0) | |
252b5132 | 207 | { |
1355568a | 208 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
209 | bfd_errmsg (bfd_get_error ())); |
210 | done (1); | |
211 | } | |
212 | ||
37b1bfcd | 213 | core_syms = (asymbol **) xmalloc (core_sym_bytes); |
252b5132 | 214 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); |
0eee5820 | 215 | |
252b5132 RH |
216 | if (core_num_syms < 0) |
217 | { | |
1355568a | 218 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
219 | bfd_errmsg (bfd_get_error ())); |
220 | done (1); | |
221 | } | |
222 | ||
2f041bf7 AM |
223 | synth_count = bfd_get_synthetic_symtab (core_bfd, core_num_syms, core_syms, |
224 | 0, NULL, &synthsyms); | |
225 | if (synth_count > 0) | |
226 | { | |
227 | asymbol **symp; | |
228 | long new_size; | |
229 | long i; | |
230 | ||
231 | new_size = (core_num_syms + synth_count + 1) * sizeof (*core_syms); | |
1e9cc1c2 | 232 | core_syms = (asymbol **) xrealloc (core_syms, new_size); |
2f041bf7 AM |
233 | symp = core_syms + core_num_syms; |
234 | core_num_syms += synth_count; | |
235 | for (i = 0; i < synth_count; i++) | |
236 | *symp++ = synthsyms + i; | |
237 | *symp = 0; | |
238 | } | |
239 | ||
252b5132 RH |
240 | min_insn_size = 1; |
241 | offset_to_code = 0; | |
242 | ||
243 | switch (bfd_get_arch (core_bfd)) | |
244 | { | |
245 | case bfd_arch_vax: | |
246 | case bfd_arch_tahoe: | |
247 | offset_to_code = 2; | |
248 | break; | |
249 | ||
250 | case bfd_arch_alpha: | |
251 | min_insn_size = 4; | |
252 | break; | |
253 | ||
254 | default: | |
255 | break; | |
256 | } | |
257 | ||
258 | if (function_mapping_file) | |
259 | read_function_mappings (function_mapping_file); | |
260 | } | |
261 | ||
ef368dac | 262 | /* Read in the text space of an a.out file. */ |
252b5132 | 263 | |
252b5132 | 264 | void |
3e8f6abf | 265 | core_get_text_space (bfd *cbfd) |
252b5132 | 266 | { |
67cf9bc5 | 267 | core_text_space = malloc (bfd_get_section_size (core_text_sect)); |
252b5132 RH |
268 | |
269 | if (!core_text_space) | |
270 | { | |
fdcf7d43 | 271 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
67cf9bc5 | 272 | whoami, (unsigned long) bfd_get_section_size (core_text_sect)); |
252b5132 RH |
273 | done (1); |
274 | } | |
0eee5820 | 275 | |
1355568a | 276 | if (!bfd_get_section_contents (cbfd, core_text_sect, core_text_space, |
67cf9bc5 | 277 | 0, bfd_get_section_size (core_text_sect))) |
252b5132 RH |
278 | { |
279 | bfd_perror ("bfd_get_section_contents"); | |
280 | free (core_text_space); | |
281 | core_text_space = 0; | |
282 | } | |
0eee5820 | 283 | |
252b5132 | 284 | if (!core_text_space) |
ef368dac | 285 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
286 | } |
287 | ||
288 | ||
289 | void | |
3e8f6abf | 290 | find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
252b5132 | 291 | { |
b3296dc5 VP |
292 | if (core_text_space == 0) |
293 | return; | |
294 | ||
295 | hist_clip_symbol_address (&p_lowpc, &p_highpc); | |
296 | ||
252b5132 RH |
297 | switch (bfd_get_arch (core_bfd)) |
298 | { | |
299 | case bfd_arch_i386: | |
300 | i386_find_call (parent, p_lowpc, p_highpc); | |
301 | break; | |
302 | ||
303 | case bfd_arch_alpha: | |
304 | alpha_find_call (parent, p_lowpc, p_highpc); | |
305 | break; | |
306 | ||
307 | case bfd_arch_vax: | |
308 | vax_find_call (parent, p_lowpc, p_highpc); | |
309 | break; | |
310 | ||
311 | case bfd_arch_sparc: | |
312 | sparc_find_call (parent, p_lowpc, p_highpc); | |
313 | break; | |
314 | ||
315 | case bfd_arch_tahoe: | |
316 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
317 | break; | |
318 | ||
ec0806ec JT |
319 | case bfd_arch_mips: |
320 | mips_find_call (parent, p_lowpc, p_highpc); | |
321 | break; | |
322 | ||
252b5132 RH |
323 | default: |
324 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
325 | whoami, bfd_printable_name(core_bfd)); | |
326 | ||
327 | /* Don't give the error more than once. */ | |
b34976b6 | 328 | ignore_direct_calls = FALSE; |
252b5132 RH |
329 | } |
330 | } | |
331 | ||
ef368dac | 332 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
333 | 0 -> symbol is not interesting to us |
334 | 'T' -> symbol is a global name | |
335 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 336 | |
252b5132 | 337 | static int |
3e8f6abf | 338 | core_sym_class (asymbol *sym) |
252b5132 RH |
339 | { |
340 | symbol_info syminfo; | |
341 | const char *name; | |
342 | char sym_prefix; | |
343 | int i; | |
344 | ||
345 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 346 | return 0; |
252b5132 | 347 | |
ef368dac NC |
348 | /* Must be a text symbol, and static text symbols |
349 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
350 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
351 | { | |
352 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
353 | sym->name)); | |
354 | return 0; | |
355 | } | |
356 | ||
357 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
358 | i = syminfo.type; | |
359 | ||
360 | if (i == 'T') | |
ef368dac | 361 | return i; /* It's a global symbol. */ |
252b5132 RH |
362 | |
363 | if (i == 'W') | |
ef368dac NC |
364 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
365 | also be a data symbol. */ | |
366 | return 'T'; | |
252b5132 RH |
367 | |
368 | if (i != 't') | |
369 | { | |
ef368dac | 370 | /* Not a static text symbol. */ |
252b5132 RH |
371 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
372 | sym->name, i)); | |
373 | return 0; | |
374 | } | |
375 | ||
ef368dac | 376 | /* Do some more filtering on static function-names. */ |
252b5132 | 377 | if (ignore_static_funcs) |
ef368dac NC |
378 | return 0; |
379 | ||
380 | /* Can't zero-length name or funny characters in name, where | |
381 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 382 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 383 | return 0; |
252b5132 RH |
384 | |
385 | for (name = sym->name; *name; ++name) | |
386 | { | |
3289fe0c NC |
387 | if (*name == '$') |
388 | return 0; | |
389 | ||
f36485f0 | 390 | while (*name == '.') |
183e4ed8 | 391 | { |
f36485f0 NC |
392 | /* Allow both nested subprograms (which end with ".NNN", where N is |
393 | a digit) and GCC cloned functions (which contain ".clone"). | |
394 | Allow for multiple iterations of both - apparently GCC can clone | |
395 | clones and subprograms. */ | |
396 | int digit_seen = 0; | |
d165016d AM |
397 | #define CLONE_NAME ".clone." |
398 | #define CLONE_NAME_LEN strlen (CLONE_NAME) | |
399 | #define CONSTPROP_NAME ".constprop." | |
400 | #define CONSTPROP_NAME_LEN strlen (CONSTPROP_NAME) | |
401 | ||
f36485f0 NC |
402 | if (strlen (name) > CLONE_NAME_LEN |
403 | && strncmp (name, CLONE_NAME, CLONE_NAME_LEN) == 0) | |
404 | name += CLONE_NAME_LEN - 1; | |
183e4ed8 | 405 | |
d165016d AM |
406 | else if (strlen (name) > CONSTPROP_NAME_LEN |
407 | && strncmp (name, CONSTPROP_NAME, CONSTPROP_NAME_LEN) == 0) | |
408 | name += CONSTPROP_NAME_LEN - 1; | |
409 | ||
183e4ed8 | 410 | for (name++; *name; name++) |
f36485f0 NC |
411 | if (digit_seen && *name == '.') |
412 | break; | |
413 | else if (ISDIGIT (*name)) | |
414 | digit_seen = 1; | |
415 | else | |
183e4ed8 | 416 | return 0; |
183e4ed8 | 417 | } |
ef368dac | 418 | } |
0eee5820 | 419 | |
ef368dac NC |
420 | /* On systems where the C compiler adds an underscore to all |
421 | names, static names without underscores seem usually to be | |
422 | labels in hand written assembler in the library. We don't want | |
423 | these names. This is certainly necessary on a Sparc running | |
424 | SunOS 4.1 (try profiling a program that does a lot of | |
425 | division). I don't know whether it has harmful side effects on | |
426 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 427 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 428 | |
252b5132 | 429 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 430 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 431 | language. We want to ignore these, since sometimes they mask |
ef368dac | 432 | the real function. (dj@ctron) */ |
252b5132 RH |
433 | || !strncmp (sym->name, "__gnu_compiled", 14) |
434 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
435 | { | |
436 | return 0; | |
437 | } | |
438 | ||
ef368dac NC |
439 | /* If the object file supports marking of function symbols, then |
440 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
441 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
442 | return 0; | |
443 | ||
ef368dac | 444 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
445 | } |
446 | ||
ef368dac | 447 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 448 | |
b34976b6 | 449 | static bfd_boolean |
3e8f6abf | 450 | get_src_info (bfd_vma addr, const char **filename, const char **name, int *line_num) |
252b5132 RH |
451 | { |
452 | const char *fname = 0, *func_name = 0; | |
453 | int l = 0; | |
454 | ||
455 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
456 | addr - core_text_sect->vma, | |
457 | &fname, &func_name, (unsigned int *) &l) | |
458 | && fname && func_name && l) | |
459 | { | |
460 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 461 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
462 | *filename = fname; |
463 | *name = func_name; | |
464 | *line_num = l; | |
b34976b6 | 465 | return TRUE; |
252b5132 RH |
466 | } |
467 | else | |
468 | { | |
469 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
0af1713e AM |
470 | (unsigned long) addr, |
471 | fname ? fname : "<unknown>", l, | |
252b5132 | 472 | func_name ? func_name : "<unknown>")); |
b34976b6 | 473 | return FALSE; |
252b5132 RH |
474 | } |
475 | } | |
476 | ||
0e27a8f6 NC |
477 | /* Return number of symbols in a symbol-table file. */ |
478 | ||
d165016d | 479 | static int |
0e27a8f6 NC |
480 | num_of_syms_in (FILE * f) |
481 | { | |
482 | const int BUFSIZE = 1024; | |
483 | char * buf = (char *) xmalloc (BUFSIZE); | |
484 | char * address = (char *) xmalloc (BUFSIZE); | |
485 | char type; | |
486 | char * name = (char *) xmalloc (BUFSIZE); | |
487 | int num = 0; | |
d165016d | 488 | |
0e27a8f6 NC |
489 | while (!feof (f) && fgets (buf, BUFSIZE - 1, f)) |
490 | { | |
491 | if (sscanf (buf, "%s %c %s", address, &type, name) == 3) | |
492 | if (type == 't' || type == 'T') | |
493 | ++num; | |
494 | } | |
495 | ||
496 | free (buf); | |
497 | free (address); | |
498 | free (name); | |
499 | ||
500 | return num; | |
501 | } | |
502 | ||
503 | /* Read symbol table from a file. */ | |
504 | ||
505 | void | |
506 | core_create_syms_from (const char * sym_table_file) | |
507 | { | |
508 | const int BUFSIZE = 1024; | |
509 | char * buf = (char *) xmalloc (BUFSIZE); | |
510 | char * address = (char *) xmalloc (BUFSIZE); | |
511 | char type; | |
512 | char * name = (char *) xmalloc (BUFSIZE); | |
513 | bfd_vma min_vma = ~(bfd_vma) 0; | |
514 | bfd_vma max_vma = 0; | |
515 | FILE * f; | |
516 | ||
517 | f = fopen (sym_table_file, "r"); | |
518 | if (!f) | |
519 | { | |
520 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, sym_table_file); | |
521 | done (1); | |
522 | } | |
523 | ||
524 | /* Pass 1 - determine upper bound on number of function names. */ | |
525 | symtab.len = num_of_syms_in (f); | |
526 | ||
527 | if (symtab.len == 0) | |
528 | { | |
529 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, sym_table_file); | |
530 | done (1); | |
531 | } | |
532 | ||
533 | symtab.base = (Sym *) xmalloc (symtab.len * sizeof (Sym)); | |
534 | ||
535 | /* Pass 2 - create symbols. */ | |
536 | symtab.limit = symtab.base; | |
537 | ||
538 | if (fseek (f, 0, SEEK_SET) != 0) | |
539 | { | |
540 | perror (sym_table_file); | |
541 | done (1); | |
542 | } | |
543 | ||
1ad40a04 | 544 | while (!feof (f) && fgets (buf, BUFSIZE - 1, f)) |
0e27a8f6 NC |
545 | { |
546 | if (sscanf (buf, "%s %c %s", address, &type, name) == 3) | |
547 | if (type != 't' && type != 'T') | |
548 | continue; | |
549 | ||
550 | sym_init (symtab.limit); | |
551 | ||
f89ddd70 | 552 | sscanf (address, "%" BFD_VMA_FMT "x", &(symtab.limit->addr) ); |
0e27a8f6 NC |
553 | |
554 | symtab.limit->name = (char *) xmalloc (strlen (name) + 1); | |
555 | strcpy ((char *) symtab.limit->name, name); | |
556 | symtab.limit->mapped = 0; | |
557 | symtab.limit->is_func = TRUE; | |
558 | symtab.limit->is_bb_head = TRUE; | |
559 | symtab.limit->is_static = (type == 't'); | |
560 | min_vma = MIN (symtab.limit->addr, min_vma); | |
561 | max_vma = MAX (symtab.limit->addr, max_vma); | |
562 | ||
563 | ++symtab.limit; | |
564 | } | |
565 | fclose (f); | |
566 | ||
567 | symtab.len = symtab.limit - symtab.base; | |
568 | symtab_finalize (&symtab); | |
569 | ||
570 | free (buf); | |
571 | free (address); | |
572 | free (name); | |
573 | } | |
574 | ||
e7e981d6 NC |
575 | static int |
576 | search_mapped_symbol (const void * l, const void * r) | |
577 | { | |
578 | return strcmp ((const char *) l, ((const struct function_map *) r)->function_name); | |
579 | } | |
580 | ||
ef368dac NC |
581 | /* Read in symbol table from core. |
582 | One symbol per function is entered. */ | |
252b5132 | 583 | |
252b5132 | 584 | void |
e7e981d6 | 585 | core_create_function_syms (void) |
252b5132 | 586 | { |
e7e981d6 | 587 | bfd_vma min_vma = ~ (bfd_vma) 0; |
1355568a | 588 | bfd_vma max_vma = 0; |
96d56e9f | 589 | int cxxclass; |
e7e981d6 | 590 | long i; |
ca25b5ba | 591 | struct function_map * found = NULL; |
02f2d833 AM |
592 | int core_has_func_syms = 0; |
593 | ||
594 | switch (core_bfd->xvec->flavour) | |
595 | { | |
596 | default: | |
597 | break; | |
598 | case bfd_target_coff_flavour: | |
599 | case bfd_target_ecoff_flavour: | |
600 | case bfd_target_xcoff_flavour: | |
601 | case bfd_target_elf_flavour: | |
602 | case bfd_target_nlm_flavour: | |
603 | case bfd_target_som_flavour: | |
604 | core_has_func_syms = 1; | |
605 | } | |
252b5132 | 606 | |
ef368dac | 607 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 608 | symtab.len = 0; |
0eee5820 | 609 | |
252b5132 RH |
610 | for (i = 0; i < core_num_syms; ++i) |
611 | { | |
612 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 613 | continue; |
252b5132 | 614 | |
e7e981d6 | 615 | /* Don't create a symtab entry for a function that has |
252b5132 RH |
616 | a mapping to a file, unless it's the first function |
617 | in the file. */ | |
ca25b5ba TG |
618 | if (symbol_map_count != 0) |
619 | { | |
620 | /* Note: some systems (SunOS 5.8) crash if bsearch base argument | |
621 | is NULL. */ | |
622 | found = (struct function_map *) bsearch | |
623 | (core_syms[i]->name, symbol_map, symbol_map_count, | |
624 | sizeof (struct function_map), search_mapped_symbol); | |
625 | } | |
e7e981d6 | 626 | if (found == NULL || found->is_first) |
0eee5820 | 627 | ++symtab.len; |
252b5132 RH |
628 | } |
629 | ||
630 | if (symtab.len == 0) | |
631 | { | |
632 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
633 | done (1); | |
634 | } | |
635 | ||
d401d98a | 636 | symtab.base = (Sym *) xmalloc (symtab.len * sizeof (Sym)); |
252b5132 | 637 | |
ef368dac | 638 | /* Pass 2 - create symbols. */ |
252b5132 | 639 | symtab.limit = symtab.base; |
0eee5820 | 640 | |
252b5132 RH |
641 | for (i = 0; i < core_num_syms; ++i) |
642 | { | |
c3fcc31e AM |
643 | asection *sym_sec; |
644 | ||
96d56e9f | 645 | cxxclass = core_sym_class (core_syms[i]); |
0eee5820 | 646 | |
96d56e9f | 647 | if (!cxxclass) |
252b5132 RH |
648 | { |
649 | DBG (AOUTDEBUG, | |
650 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
651 | (unsigned long) core_syms[i]->value, |
652 | core_syms[i]->name)); | |
252b5132 RH |
653 | continue; |
654 | } | |
0eee5820 | 655 | |
ca25b5ba TG |
656 | if (symbol_map_count != 0) |
657 | { | |
658 | /* Note: some systems (SunOS 5.8) crash if bsearch base argument | |
659 | is NULL. */ | |
660 | found = (struct function_map *) bsearch | |
661 | (core_syms[i]->name, symbol_map, symbol_map_count, | |
662 | sizeof (struct function_map), search_mapped_symbol); | |
663 | } | |
e7e981d6 | 664 | if (found && ! found->is_first) |
252b5132 RH |
665 | continue; |
666 | ||
667 | sym_init (symtab.limit); | |
668 | ||
ef368dac | 669 | /* Symbol offsets are always section-relative. */ |
c3fcc31e AM |
670 | sym_sec = core_syms[i]->section; |
671 | symtab.limit->addr = core_syms[i]->value; | |
672 | if (sym_sec) | |
673 | symtab.limit->addr += bfd_get_section_vma (sym_sec->owner, sym_sec); | |
0eee5820 | 674 | |
e7e981d6 | 675 | if (found) |
252b5132 | 676 | { |
e7e981d6 | 677 | symtab.limit->name = found->file_name; |
252b5132 RH |
678 | symtab.limit->mapped = 1; |
679 | } | |
680 | else | |
681 | { | |
682 | symtab.limit->name = core_syms[i]->name; | |
683 | symtab.limit->mapped = 0; | |
684 | } | |
685 | ||
ef368dac | 686 | /* Lookup filename and line number, if we can. */ |
252b5132 | 687 | { |
e7e981d6 NC |
688 | const char * filename; |
689 | const char * func_name; | |
0eee5820 | 690 | |
e7e981d6 NC |
691 | if (get_src_info (symtab.limit->addr, & filename, & func_name, |
692 | & symtab.limit->line_num)) | |
252b5132 RH |
693 | { |
694 | symtab.limit->file = source_file_lookup_path (filename); | |
695 | ||
696 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 697 | gprof. */ |
252b5132 | 698 | #ifdef __osf__ |
ef368dac NC |
699 | /* Suppress symbols that are not function names. This is |
700 | useful to suppress code-labels and aliases. | |
0eee5820 | 701 | |
ef368dac NC |
702 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
703 | labels do not appear in the symbol table info, so this isn't | |
704 | necessary. */ | |
252b5132 RH |
705 | |
706 | if (strcmp (symtab.limit->name, func_name) != 0) | |
707 | { | |
ef368dac NC |
708 | /* The symbol's address maps to a different name, so |
709 | it can't be a function-entry point. This happens | |
710 | for labels, for example. */ | |
252b5132 RH |
711 | DBG (AOUTDEBUG, |
712 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
713 | symtab.limit->name, func_name)); | |
714 | continue; | |
715 | } | |
716 | #endif | |
717 | } | |
718 | } | |
719 | ||
02f2d833 AM |
720 | symtab.limit->is_func = (!core_has_func_syms |
721 | || (core_syms[i]->flags & BSF_FUNCTION) != 0); | |
b34976b6 | 722 | symtab.limit->is_bb_head = TRUE; |
0eee5820 | 723 | |
96d56e9f | 724 | if (cxxclass == 't') |
b34976b6 | 725 | symtab.limit->is_static = TRUE; |
252b5132 | 726 | |
8e1a114b DB |
727 | /* Keep track of the minimum and maximum vma addresses used by all |
728 | symbols. When computing the max_vma, use the ending address of the | |
729 | section containing the symbol, if available. */ | |
252b5132 | 730 | min_vma = MIN (symtab.limit->addr, min_vma); |
c3fcc31e AM |
731 | if (sym_sec) |
732 | max_vma = MAX (bfd_get_section_vma (sym_sec->owner, sym_sec) | |
733 | + bfd_section_size (sym_sec->owner, sym_sec) - 1, | |
734 | max_vma); | |
8e1a114b DB |
735 | else |
736 | max_vma = MAX (symtab.limit->addr, max_vma); | |
252b5132 | 737 | |
252b5132 RH |
738 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", |
739 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
740 | symtab.limit->name, |
741 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
742 | ++symtab.limit; |
743 | } | |
744 | ||
252b5132 RH |
745 | symtab.len = symtab.limit - symtab.base; |
746 | symtab_finalize (&symtab); | |
747 | } | |
748 | ||
ef368dac NC |
749 | /* Read in symbol table from core. |
750 | One symbol per line of source code is entered. */ | |
252b5132 | 751 | |
252b5132 | 752 | void |
e7e981d6 | 753 | core_create_line_syms (void) |
252b5132 RH |
754 | { |
755 | char *prev_name, *prev_filename; | |
1355568a AM |
756 | unsigned int prev_name_len, prev_filename_len; |
757 | bfd_vma vma, min_vma = ~(bfd_vma) 0, max_vma = 0; | |
d401d98a | 758 | Sym *prev, dummy, *sym; |
252b5132 RH |
759 | const char *filename; |
760 | int prev_line_num; | |
761 | Sym_Table ltab; | |
bb02f434 | 762 | bfd_vma vma_high; |
0eee5820 | 763 | |
ef368dac NC |
764 | /* Create symbols for functions as usual. This is necessary in |
765 | cases where parts of a program were not compiled with -g. For | |
766 | those parts we still want to get info at the function level. */ | |
37b1bfcd | 767 | core_create_function_syms (); |
252b5132 | 768 | |
37b1bfcd | 769 | /* Pass 1: count the number of symbols. */ |
ef368dac NC |
770 | |
771 | /* To find all line information, walk through all possible | |
772 | text-space addresses (one by one!) and get the debugging | |
773 | info for each address. When the debugging info changes, | |
774 | it is time to create a new symbol. | |
0eee5820 | 775 | |
ef368dac | 776 | Of course, this is rather slow and it would be better if |
37b1bfcd | 777 | BFD would provide an iterator for enumerating all line infos. */ |
252b5132 RH |
778 | prev_name_len = PATH_MAX; |
779 | prev_filename_len = PATH_MAX; | |
1e9cc1c2 NC |
780 | prev_name = (char *) xmalloc (prev_name_len); |
781 | prev_filename = (char *) xmalloc (prev_filename_len); | |
252b5132 RH |
782 | ltab.len = 0; |
783 | prev_line_num = 0; | |
0eee5820 | 784 | |
67cf9bc5 | 785 | vma_high = core_text_sect->vma + bfd_get_section_size (core_text_sect); |
37b1bfcd | 786 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 | 787 | { |
1355568a | 788 | unsigned int len; |
252b5132 | 789 | |
252b5132 RH |
790 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
791 | || (prev_line_num == dummy.line_num | |
792 | && prev_name != NULL | |
793 | && strcmp (prev_name, dummy.name) == 0 | |
aee9ba6f | 794 | && filename_cmp (prev_filename, filename) == 0)) |
ef368dac | 795 | continue; |
252b5132 RH |
796 | |
797 | ++ltab.len; | |
798 | prev_line_num = dummy.line_num; | |
799 | ||
800 | len = strlen (dummy.name); | |
801 | if (len >= prev_name_len) | |
802 | { | |
803 | prev_name_len = len + 1024; | |
804 | free (prev_name); | |
1e9cc1c2 | 805 | prev_name = (char *) xmalloc (prev_name_len); |
252b5132 | 806 | } |
0eee5820 | 807 | |
252b5132 | 808 | strcpy (prev_name, dummy.name); |
252b5132 | 809 | len = strlen (filename); |
0eee5820 | 810 | |
252b5132 RH |
811 | if (len >= prev_filename_len) |
812 | { | |
813 | prev_filename_len = len + 1024; | |
814 | free (prev_filename); | |
1e9cc1c2 | 815 | prev_filename = (char *) xmalloc (prev_filename_len); |
252b5132 | 816 | } |
0eee5820 | 817 | |
252b5132 RH |
818 | strcpy (prev_filename, filename); |
819 | ||
820 | min_vma = MIN (vma, min_vma); | |
821 | max_vma = MAX (vma, max_vma); | |
822 | } | |
823 | ||
824 | free (prev_name); | |
825 | free (prev_filename); | |
826 | ||
ef368dac | 827 | /* Make room for function symbols, too. */ |
252b5132 RH |
828 | ltab.len += symtab.len; |
829 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
830 | ltab.limit = ltab.base; | |
831 | ||
ef368dac | 832 | /* Pass 2 - create symbols. */ |
252b5132 RH |
833 | |
834 | /* We now set is_static as we go along, rather than by running | |
835 | through the symbol table at the end. | |
836 | ||
837 | The old way called symtab_finalize before the is_static pass, | |
838 | causing a problem since symtab_finalize uses is_static as part of | |
839 | its address conflict resolution algorithm. Since global symbols | |
840 | were prefered over static symbols, and all line symbols were | |
841 | global at that point, static function names that conflicted with | |
842 | their own line numbers (static, but labeled as global) were | |
843 | rejected in favor of the line num. | |
844 | ||
845 | This was not the desired functionality. We always want to keep | |
846 | our function symbols and discard any conflicting line symbols. | |
847 | Perhaps symtab_finalize should be modified to make this | |
848 | distinction as well, but the current fix works and the code is a | |
849 | lot cleaner now. */ | |
252b5132 | 850 | prev = 0; |
0eee5820 | 851 | |
37b1bfcd | 852 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 RH |
853 | { |
854 | sym_init (ltab.limit); | |
0eee5820 | 855 | |
37b1bfcd | 856 | if (!get_src_info (vma, &filename, <ab.limit->name, <ab.limit->line_num) |
252b5132 RH |
857 | || (prev && prev->line_num == ltab.limit->line_num |
858 | && strcmp (prev->name, ltab.limit->name) == 0 | |
aee9ba6f | 859 | && filename_cmp (prev->file->name, filename) == 0)) |
ef368dac | 860 | continue; |
252b5132 | 861 | |
ef368dac | 862 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
863 | ltab.limit->name = xstrdup (ltab.limit->name); |
864 | ltab.limit->file = source_file_lookup_path (filename); | |
865 | ||
37b1bfcd | 866 | ltab.limit->addr = vma; |
252b5132 RH |
867 | |
868 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
869 | 1) the previous symbol, if it's from the same function, or |
870 | 2) a symtab lookup. */ | |
252b5132 RH |
871 | if (prev && ltab.limit->file == prev->file && |
872 | strcmp (ltab.limit->name, prev->name) == 0) | |
873 | { | |
874 | ltab.limit->is_static = prev->is_static; | |
875 | } | |
876 | else | |
877 | { | |
878 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
d401d98a AM |
879 | if (sym) |
880 | ltab.limit->is_static = sym->is_static; | |
252b5132 RH |
881 | } |
882 | ||
883 | prev = ltab.limit; | |
884 | ||
4a607dcc ILT |
885 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
886 | (unsigned long) (ltab.limit - ltab.base), | |
887 | ltab.limit->name, | |
fdcf7d43 | 888 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
889 | ++ltab.limit; |
890 | } | |
891 | ||
ef368dac | 892 | /* Copy in function symbols. */ |
252b5132 RH |
893 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
894 | ltab.limit += symtab.len; | |
895 | ||
896 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
897 | { | |
898 | fprintf (stderr, | |
899 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
900 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
901 | done (1); | |
902 | } | |
903 | ||
ef368dac | 904 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
905 | symtab_finalize (<ab); |
906 | free (symtab.base); | |
907 | symtab = ltab; | |
252b5132 | 908 | } |