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