Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
2571583a | 3 | Copyright (C) 1999-2017 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 | |
651dbc76 | 9 | the Free Software Foundation; either version 3 of the License, or |
ef368dac NC |
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 | |
44eb1801 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
ef368dac | 21 | \f |
252b5132 | 22 | #include "gprof.h" |
ecba005f | 23 | #include "libiberty.h" |
aee9ba6f | 24 | #include "filenames.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" |
c6165913 | 31 | #include <limits.h> /* For UINT_MAX. */ |
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); | |
cd2ae971 | 57 | extern void aarch64_find_call (Sym *, bfd_vma, bfd_vma); |
252b5132 | 58 | |
74335607 BE |
59 | static void |
60 | parse_error (const char *filename) | |
61 | { | |
62 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), whoami, filename); | |
63 | done (1); | |
64 | } | |
65 | ||
e7e981d6 NC |
66 | /* Compare two function_map structs based on function name. |
67 | We want to sort in ascending order. */ | |
68 | ||
69 | static int | |
70 | cmp_symbol_map (const void * l, const void * r) | |
71 | { | |
d165016d | 72 | return strcmp (((struct function_map *) l)->function_name, |
e7e981d6 NC |
73 | ((struct function_map *) r)->function_name); |
74 | } | |
75 | ||
38334d6d NC |
76 | #define BUFSIZE (1024) |
77 | /* This is BUFSIZE - 1 as a string. Suitable for use in fprintf/sscanf format strings. */ | |
78 | #define STR_BUFSIZE "1023" | |
79 | ||
252b5132 | 80 | static void |
3e8f6abf | 81 | read_function_mappings (const char *filename) |
252b5132 | 82 | { |
e7e981d6 | 83 | FILE * file = fopen (filename, "r"); |
38334d6d | 84 | char dummy[BUFSIZE]; |
252b5132 | 85 | int count = 0; |
e7e981d6 | 86 | unsigned int i; |
252b5132 RH |
87 | |
88 | if (!file) | |
89 | { | |
90 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
91 | done (1); | |
92 | } | |
93 | ||
94 | /* First parse the mapping file so we know how big we need to | |
95 | make our tables. We also do some sanity checks at this | |
96 | time. */ | |
97 | while (!feof (file)) | |
98 | { | |
99 | int matches; | |
100 | ||
38334d6d | 101 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n:]", dummy); |
252b5132 | 102 | if (!matches) |
74335607 | 103 | parse_error (filename); |
252b5132 RH |
104 | |
105 | /* Just skip messages about files with no symbols. */ | |
106 | if (!strncmp (dummy, "No symbols in ", 14)) | |
107 | { | |
74335607 BE |
108 | matches = fscanf (file, "\n"); |
109 | if (matches == EOF) | |
110 | parse_error (filename); | |
252b5132 RH |
111 | continue; |
112 | } | |
113 | ||
114 | /* Don't care what else is on this line at this point. */ | |
38334d6d | 115 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n]\n", dummy); |
74335607 BE |
116 | if (!matches) |
117 | parse_error (filename); | |
252b5132 RH |
118 | count++; |
119 | } | |
120 | ||
121 | /* Now we know how big we need to make our table. */ | |
122 | symbol_map = ((struct function_map *) | |
123 | xmalloc (count * sizeof (struct function_map))); | |
124 | ||
125 | /* Rewind the input file so we can read it again. */ | |
126 | rewind (file); | |
127 | ||
128 | /* Read each entry and put it into the table. */ | |
129 | count = 0; | |
130 | while (!feof (file)) | |
131 | { | |
132 | int matches; | |
133 | char *tmp; | |
134 | ||
38334d6d | 135 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n:]", dummy); |
252b5132 | 136 | if (!matches) |
74335607 | 137 | parse_error (filename); |
252b5132 RH |
138 | |
139 | /* Just skip messages about files with no symbols. */ | |
140 | if (!strncmp (dummy, "No symbols in ", 14)) | |
141 | { | |
74335607 BE |
142 | matches = fscanf (file, "\n"); |
143 | if (matches == EOF) | |
144 | parse_error (filename); | |
252b5132 RH |
145 | continue; |
146 | } | |
147 | ||
148 | /* dummy has the filename, go ahead and copy it. */ | |
1e9cc1c2 | 149 | symbol_map[count].file_name = (char *) xmalloc (strlen (dummy) + 1); |
252b5132 RH |
150 | strcpy (symbol_map[count].file_name, dummy); |
151 | ||
152 | /* Now we need the function name. */ | |
38334d6d | 153 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n]\n", dummy); |
74335607 BE |
154 | if (!matches) |
155 | parse_error (filename); | |
252b5132 | 156 | tmp = strrchr (dummy, ' ') + 1; |
1e9cc1c2 | 157 | symbol_map[count].function_name = (char *) xmalloc (strlen (tmp) + 1); |
252b5132 RH |
158 | strcpy (symbol_map[count].function_name, tmp); |
159 | count++; | |
160 | } | |
161 | ||
162 | /* Record the size of the map table for future reference. */ | |
163 | symbol_map_count = count; | |
252b5132 | 164 | |
e7e981d6 | 165 | for (i = 0; i < symbol_map_count; ++i) |
aee9ba6f KT |
166 | if (i == 0 |
167 | || filename_cmp (symbol_map[i].file_name, symbol_map[i - 1].file_name)) | |
e7e981d6 NC |
168 | symbol_map[i].is_first = 1; |
169 | ||
170 | qsort (symbol_map, symbol_map_count, sizeof (struct function_map), cmp_symbol_map); | |
5af84f93 NC |
171 | |
172 | fclose (file); | |
e7e981d6 | 173 | } |
ef368dac | 174 | |
252b5132 | 175 | void |
e7e981d6 | 176 | core_init (const char * aout_name) |
252b5132 | 177 | { |
37b1bfcd | 178 | int core_sym_bytes; |
2f041bf7 AM |
179 | asymbol *synthsyms; |
180 | long synth_count; | |
181 | ||
1355568a | 182 | core_bfd = bfd_openr (aout_name, 0); |
252b5132 RH |
183 | |
184 | if (!core_bfd) | |
185 | { | |
1355568a | 186 | perror (aout_name); |
252b5132 RH |
187 | done (1); |
188 | } | |
189 | ||
190 | if (!bfd_check_format (core_bfd, bfd_object)) | |
191 | { | |
11010f5a | 192 | fprintf (stderr, _("%s: %s: not in executable format\n"), whoami, aout_name); |
252b5132 RH |
193 | done (1); |
194 | } | |
195 | ||
ef368dac | 196 | /* Get core's text section. */ |
252b5132 RH |
197 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
198 | if (!core_text_sect) | |
199 | { | |
200 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
201 | if (!core_text_sect) | |
202 | { | |
203 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
1355568a | 204 | whoami, aout_name); |
252b5132 RH |
205 | done (1); |
206 | } | |
207 | } | |
208 | ||
ef368dac | 209 | /* Read core's symbol table. */ |
252b5132 | 210 | |
ef368dac | 211 | /* This will probably give us more than we need, but that's ok. */ |
37b1bfcd BE |
212 | core_sym_bytes = bfd_get_symtab_upper_bound (core_bfd); |
213 | if (core_sym_bytes < 0) | |
252b5132 | 214 | { |
1355568a | 215 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
216 | bfd_errmsg (bfd_get_error ())); |
217 | done (1); | |
218 | } | |
219 | ||
37b1bfcd | 220 | core_syms = (asymbol **) xmalloc (core_sym_bytes); |
252b5132 | 221 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); |
0eee5820 | 222 | |
252b5132 RH |
223 | if (core_num_syms < 0) |
224 | { | |
1355568a | 225 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
226 | bfd_errmsg (bfd_get_error ())); |
227 | done (1); | |
228 | } | |
229 | ||
2f041bf7 AM |
230 | synth_count = bfd_get_synthetic_symtab (core_bfd, core_num_syms, core_syms, |
231 | 0, NULL, &synthsyms); | |
232 | if (synth_count > 0) | |
233 | { | |
234 | asymbol **symp; | |
235 | long new_size; | |
236 | long i; | |
237 | ||
238 | new_size = (core_num_syms + synth_count + 1) * sizeof (*core_syms); | |
1e9cc1c2 | 239 | core_syms = (asymbol **) xrealloc (core_syms, new_size); |
2f041bf7 AM |
240 | symp = core_syms + core_num_syms; |
241 | core_num_syms += synth_count; | |
242 | for (i = 0; i < synth_count; i++) | |
243 | *symp++ = synthsyms + i; | |
244 | *symp = 0; | |
245 | } | |
246 | ||
252b5132 RH |
247 | min_insn_size = 1; |
248 | offset_to_code = 0; | |
249 | ||
250 | switch (bfd_get_arch (core_bfd)) | |
251 | { | |
252 | case bfd_arch_vax: | |
253 | case bfd_arch_tahoe: | |
254 | offset_to_code = 2; | |
255 | break; | |
256 | ||
257 | case bfd_arch_alpha: | |
258 | min_insn_size = 4; | |
259 | break; | |
260 | ||
261 | default: | |
262 | break; | |
263 | } | |
264 | ||
265 | if (function_mapping_file) | |
266 | read_function_mappings (function_mapping_file); | |
267 | } | |
268 | ||
ef368dac | 269 | /* Read in the text space of an a.out file. */ |
252b5132 | 270 | |
252b5132 | 271 | void |
3e8f6abf | 272 | core_get_text_space (bfd *cbfd) |
252b5132 | 273 | { |
67cf9bc5 | 274 | core_text_space = malloc (bfd_get_section_size (core_text_sect)); |
252b5132 RH |
275 | |
276 | if (!core_text_space) | |
277 | { | |
fdcf7d43 | 278 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
67cf9bc5 | 279 | whoami, (unsigned long) bfd_get_section_size (core_text_sect)); |
252b5132 RH |
280 | done (1); |
281 | } | |
0eee5820 | 282 | |
1355568a | 283 | if (!bfd_get_section_contents (cbfd, core_text_sect, core_text_space, |
67cf9bc5 | 284 | 0, bfd_get_section_size (core_text_sect))) |
252b5132 RH |
285 | { |
286 | bfd_perror ("bfd_get_section_contents"); | |
287 | free (core_text_space); | |
288 | core_text_space = 0; | |
289 | } | |
0eee5820 | 290 | |
252b5132 | 291 | if (!core_text_space) |
ef368dac | 292 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
293 | } |
294 | ||
295 | ||
296 | void | |
3e8f6abf | 297 | find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
252b5132 | 298 | { |
b3296dc5 VP |
299 | if (core_text_space == 0) |
300 | return; | |
301 | ||
302 | hist_clip_symbol_address (&p_lowpc, &p_highpc); | |
303 | ||
252b5132 RH |
304 | switch (bfd_get_arch (core_bfd)) |
305 | { | |
306 | case bfd_arch_i386: | |
307 | i386_find_call (parent, p_lowpc, p_highpc); | |
308 | break; | |
309 | ||
310 | case bfd_arch_alpha: | |
311 | alpha_find_call (parent, p_lowpc, p_highpc); | |
312 | break; | |
313 | ||
314 | case bfd_arch_vax: | |
315 | vax_find_call (parent, p_lowpc, p_highpc); | |
316 | break; | |
317 | ||
318 | case bfd_arch_sparc: | |
319 | sparc_find_call (parent, p_lowpc, p_highpc); | |
320 | break; | |
321 | ||
322 | case bfd_arch_tahoe: | |
323 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
324 | break; | |
325 | ||
ec0806ec JT |
326 | case bfd_arch_mips: |
327 | mips_find_call (parent, p_lowpc, p_highpc); | |
328 | break; | |
329 | ||
cd2ae971 AM |
330 | case bfd_arch_aarch64: |
331 | aarch64_find_call (parent, p_lowpc, p_highpc); | |
332 | break; | |
333 | ||
252b5132 RH |
334 | default: |
335 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
336 | whoami, bfd_printable_name(core_bfd)); | |
337 | ||
338 | /* Don't give the error more than once. */ | |
b34976b6 | 339 | ignore_direct_calls = FALSE; |
252b5132 RH |
340 | } |
341 | } | |
342 | ||
ef368dac | 343 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
344 | 0 -> symbol is not interesting to us |
345 | 'T' -> symbol is a global name | |
346 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 347 | |
252b5132 | 348 | static int |
3e8f6abf | 349 | core_sym_class (asymbol *sym) |
252b5132 RH |
350 | { |
351 | symbol_info syminfo; | |
352 | const char *name; | |
353 | char sym_prefix; | |
354 | int i; | |
355 | ||
356 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 357 | return 0; |
252b5132 | 358 | |
ef368dac NC |
359 | /* Must be a text symbol, and static text symbols |
360 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
361 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
362 | { | |
363 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
364 | sym->name)); | |
365 | return 0; | |
366 | } | |
367 | ||
368 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
369 | i = syminfo.type; | |
370 | ||
371 | if (i == 'T') | |
ef368dac | 372 | return i; /* It's a global symbol. */ |
252b5132 RH |
373 | |
374 | if (i == 'W') | |
ef368dac NC |
375 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
376 | also be a data symbol. */ | |
377 | return 'T'; | |
252b5132 RH |
378 | |
379 | if (i != 't') | |
380 | { | |
ef368dac | 381 | /* Not a static text symbol. */ |
252b5132 RH |
382 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
383 | sym->name, i)); | |
384 | return 0; | |
385 | } | |
386 | ||
ef368dac | 387 | /* Do some more filtering on static function-names. */ |
252b5132 | 388 | if (ignore_static_funcs) |
ef368dac NC |
389 | return 0; |
390 | ||
391 | /* Can't zero-length name or funny characters in name, where | |
392 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 393 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 394 | return 0; |
252b5132 RH |
395 | |
396 | for (name = sym->name; *name; ++name) | |
397 | { | |
3289fe0c NC |
398 | if (*name == '$') |
399 | return 0; | |
400 | ||
f36485f0 | 401 | while (*name == '.') |
183e4ed8 | 402 | { |
f36485f0 NC |
403 | /* Allow both nested subprograms (which end with ".NNN", where N is |
404 | a digit) and GCC cloned functions (which contain ".clone"). | |
405 | Allow for multiple iterations of both - apparently GCC can clone | |
406 | clones and subprograms. */ | |
407 | int digit_seen = 0; | |
d165016d AM |
408 | #define CLONE_NAME ".clone." |
409 | #define CLONE_NAME_LEN strlen (CLONE_NAME) | |
410 | #define CONSTPROP_NAME ".constprop." | |
411 | #define CONSTPROP_NAME_LEN strlen (CONSTPROP_NAME) | |
412 | ||
f36485f0 NC |
413 | if (strlen (name) > CLONE_NAME_LEN |
414 | && strncmp (name, CLONE_NAME, CLONE_NAME_LEN) == 0) | |
415 | name += CLONE_NAME_LEN - 1; | |
183e4ed8 | 416 | |
d165016d AM |
417 | else if (strlen (name) > CONSTPROP_NAME_LEN |
418 | && strncmp (name, CONSTPROP_NAME, CONSTPROP_NAME_LEN) == 0) | |
419 | name += CONSTPROP_NAME_LEN - 1; | |
420 | ||
183e4ed8 | 421 | for (name++; *name; name++) |
f36485f0 NC |
422 | if (digit_seen && *name == '.') |
423 | break; | |
424 | else if (ISDIGIT (*name)) | |
425 | digit_seen = 1; | |
426 | else | |
183e4ed8 | 427 | return 0; |
183e4ed8 | 428 | } |
ef368dac | 429 | } |
0eee5820 | 430 | |
ef368dac NC |
431 | /* On systems where the C compiler adds an underscore to all |
432 | names, static names without underscores seem usually to be | |
433 | labels in hand written assembler in the library. We don't want | |
434 | these names. This is certainly necessary on a Sparc running | |
435 | SunOS 4.1 (try profiling a program that does a lot of | |
436 | division). I don't know whether it has harmful side effects on | |
437 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 438 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 439 | |
252b5132 | 440 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 441 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 442 | language. We want to ignore these, since sometimes they mask |
ef368dac | 443 | the real function. (dj@ctron) */ |
252b5132 RH |
444 | || !strncmp (sym->name, "__gnu_compiled", 14) |
445 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
446 | { | |
447 | return 0; | |
448 | } | |
449 | ||
ef368dac NC |
450 | /* If the object file supports marking of function symbols, then |
451 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
452 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
453 | return 0; | |
454 | ||
ef368dac | 455 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
456 | } |
457 | ||
ef368dac | 458 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 459 | |
b34976b6 | 460 | static bfd_boolean |
3e8f6abf | 461 | get_src_info (bfd_vma addr, const char **filename, const char **name, int *line_num) |
252b5132 RH |
462 | { |
463 | const char *fname = 0, *func_name = 0; | |
464 | int l = 0; | |
465 | ||
466 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
467 | addr - core_text_sect->vma, | |
468 | &fname, &func_name, (unsigned int *) &l) | |
469 | && fname && func_name && l) | |
470 | { | |
471 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 472 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
473 | *filename = fname; |
474 | *name = func_name; | |
475 | *line_num = l; | |
b34976b6 | 476 | return TRUE; |
252b5132 RH |
477 | } |
478 | else | |
479 | { | |
480 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
0af1713e AM |
481 | (unsigned long) addr, |
482 | fname ? fname : "<unknown>", l, | |
252b5132 | 483 | func_name ? func_name : "<unknown>")); |
b34976b6 | 484 | return FALSE; |
252b5132 RH |
485 | } |
486 | } | |
487 | ||
38334d6d NC |
488 | static char buf[BUFSIZE]; |
489 | static char address[BUFSIZE]; | |
490 | static char name[BUFSIZE]; | |
491 | ||
0e27a8f6 NC |
492 | /* Return number of symbols in a symbol-table file. */ |
493 | ||
00927233 | 494 | static unsigned int |
0e27a8f6 NC |
495 | num_of_syms_in (FILE * f) |
496 | { | |
0e27a8f6 | 497 | char type; |
00927233 | 498 | unsigned int num = 0; |
d165016d | 499 | |
0e27a8f6 NC |
500 | while (!feof (f) && fgets (buf, BUFSIZE - 1, f)) |
501 | { | |
38334d6d | 502 | if (sscanf (buf, "%" STR_BUFSIZE "s %c %" STR_BUFSIZE "s", address, &type, name) == 3) |
0e27a8f6 | 503 | if (type == 't' || type == 'T') |
c6165913 NC |
504 | { |
505 | /* PR 20499 - prevent integer overflow computing argument to xmalloc. */ | |
506 | if (++num >= UINT_MAX / sizeof (Sym)) | |
507 | return -1U; | |
508 | } | |
0e27a8f6 NC |
509 | } |
510 | ||
0e27a8f6 NC |
511 | return num; |
512 | } | |
513 | ||
514 | /* Read symbol table from a file. */ | |
515 | ||
516 | void | |
517 | core_create_syms_from (const char * sym_table_file) | |
518 | { | |
0e27a8f6 | 519 | char type; |
0e27a8f6 NC |
520 | bfd_vma min_vma = ~(bfd_vma) 0; |
521 | bfd_vma max_vma = 0; | |
522 | FILE * f; | |
523 | ||
524 | f = fopen (sym_table_file, "r"); | |
525 | if (!f) | |
526 | { | |
527 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, sym_table_file); | |
528 | done (1); | |
529 | } | |
530 | ||
531 | /* Pass 1 - determine upper bound on number of function names. */ | |
532 | symtab.len = num_of_syms_in (f); | |
533 | ||
534 | if (symtab.len == 0) | |
535 | { | |
536 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, sym_table_file); | |
537 | done (1); | |
538 | } | |
c6165913 | 539 | else if (symtab.len == -1U) |
00927233 | 540 | { |
c6165913 NC |
541 | fprintf (stderr, _("%s: file `%s' has too many symbols\n"), |
542 | whoami, sym_table_file); | |
00927233 NC |
543 | done (1); |
544 | } | |
0e27a8f6 NC |
545 | |
546 | symtab.base = (Sym *) xmalloc (symtab.len * sizeof (Sym)); | |
547 | ||
548 | /* Pass 2 - create symbols. */ | |
549 | symtab.limit = symtab.base; | |
550 | ||
551 | if (fseek (f, 0, SEEK_SET) != 0) | |
552 | { | |
553 | perror (sym_table_file); | |
554 | done (1); | |
555 | } | |
556 | ||
1ad40a04 | 557 | while (!feof (f) && fgets (buf, BUFSIZE - 1, f)) |
0e27a8f6 | 558 | { |
38334d6d NC |
559 | if (sscanf (buf, "%" STR_BUFSIZE "s %c %" STR_BUFSIZE "s", address, &type, name) != 3) |
560 | continue; | |
561 | if (type != 't' && type != 'T') | |
562 | continue; | |
4ca0333f | 563 | |
0e27a8f6 NC |
564 | sym_init (symtab.limit); |
565 | ||
f89ddd70 | 566 | sscanf (address, "%" BFD_VMA_FMT "x", &(symtab.limit->addr) ); |
0e27a8f6 NC |
567 | |
568 | symtab.limit->name = (char *) xmalloc (strlen (name) + 1); | |
569 | strcpy ((char *) symtab.limit->name, name); | |
570 | symtab.limit->mapped = 0; | |
571 | symtab.limit->is_func = TRUE; | |
572 | symtab.limit->is_bb_head = TRUE; | |
573 | symtab.limit->is_static = (type == 't'); | |
574 | min_vma = MIN (symtab.limit->addr, min_vma); | |
575 | max_vma = MAX (symtab.limit->addr, max_vma); | |
576 | ||
577 | ++symtab.limit; | |
578 | } | |
579 | fclose (f); | |
580 | ||
581 | symtab.len = symtab.limit - symtab.base; | |
582 | symtab_finalize (&symtab); | |
0e27a8f6 NC |
583 | } |
584 | ||
e7e981d6 NC |
585 | static int |
586 | search_mapped_symbol (const void * l, const void * r) | |
587 | { | |
588 | return strcmp ((const char *) l, ((const struct function_map *) r)->function_name); | |
589 | } | |
590 | ||
ef368dac NC |
591 | /* Read in symbol table from core. |
592 | One symbol per function is entered. */ | |
252b5132 | 593 | |
252b5132 | 594 | void |
e7e981d6 | 595 | core_create_function_syms (void) |
252b5132 | 596 | { |
e7e981d6 | 597 | bfd_vma min_vma = ~ (bfd_vma) 0; |
1355568a | 598 | bfd_vma max_vma = 0; |
96d56e9f | 599 | int cxxclass; |
e7e981d6 | 600 | long i; |
ca25b5ba | 601 | struct function_map * found = NULL; |
02f2d833 AM |
602 | int core_has_func_syms = 0; |
603 | ||
604 | switch (core_bfd->xvec->flavour) | |
605 | { | |
606 | default: | |
607 | break; | |
608 | case bfd_target_coff_flavour: | |
609 | case bfd_target_ecoff_flavour: | |
610 | case bfd_target_xcoff_flavour: | |
611 | case bfd_target_elf_flavour: | |
612 | case bfd_target_nlm_flavour: | |
613 | case bfd_target_som_flavour: | |
614 | core_has_func_syms = 1; | |
615 | } | |
252b5132 | 616 | |
ef368dac | 617 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 618 | symtab.len = 0; |
0eee5820 | 619 | |
252b5132 RH |
620 | for (i = 0; i < core_num_syms; ++i) |
621 | { | |
622 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 623 | continue; |
252b5132 | 624 | |
e7e981d6 | 625 | /* Don't create a symtab entry for a function that has |
252b5132 RH |
626 | a mapping to a file, unless it's the first function |
627 | in the file. */ | |
ca25b5ba TG |
628 | if (symbol_map_count != 0) |
629 | { | |
630 | /* Note: some systems (SunOS 5.8) crash if bsearch base argument | |
631 | is NULL. */ | |
632 | found = (struct function_map *) bsearch | |
633 | (core_syms[i]->name, symbol_map, symbol_map_count, | |
634 | sizeof (struct function_map), search_mapped_symbol); | |
635 | } | |
e7e981d6 | 636 | if (found == NULL || found->is_first) |
0eee5820 | 637 | ++symtab.len; |
252b5132 RH |
638 | } |
639 | ||
640 | if (symtab.len == 0) | |
641 | { | |
642 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
643 | done (1); | |
644 | } | |
645 | ||
d401d98a | 646 | symtab.base = (Sym *) xmalloc (symtab.len * sizeof (Sym)); |
252b5132 | 647 | |
ef368dac | 648 | /* Pass 2 - create symbols. */ |
252b5132 | 649 | symtab.limit = symtab.base; |
0eee5820 | 650 | |
252b5132 RH |
651 | for (i = 0; i < core_num_syms; ++i) |
652 | { | |
c3fcc31e AM |
653 | asection *sym_sec; |
654 | ||
96d56e9f | 655 | cxxclass = core_sym_class (core_syms[i]); |
0eee5820 | 656 | |
96d56e9f | 657 | if (!cxxclass) |
252b5132 RH |
658 | { |
659 | DBG (AOUTDEBUG, | |
660 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
661 | (unsigned long) core_syms[i]->value, |
662 | core_syms[i]->name)); | |
252b5132 RH |
663 | continue; |
664 | } | |
0eee5820 | 665 | |
ca25b5ba TG |
666 | if (symbol_map_count != 0) |
667 | { | |
668 | /* Note: some systems (SunOS 5.8) crash if bsearch base argument | |
669 | is NULL. */ | |
670 | found = (struct function_map *) bsearch | |
671 | (core_syms[i]->name, symbol_map, symbol_map_count, | |
672 | sizeof (struct function_map), search_mapped_symbol); | |
673 | } | |
e7e981d6 | 674 | if (found && ! found->is_first) |
252b5132 RH |
675 | continue; |
676 | ||
677 | sym_init (symtab.limit); | |
678 | ||
ef368dac | 679 | /* Symbol offsets are always section-relative. */ |
c3fcc31e AM |
680 | sym_sec = core_syms[i]->section; |
681 | symtab.limit->addr = core_syms[i]->value; | |
682 | if (sym_sec) | |
683 | symtab.limit->addr += bfd_get_section_vma (sym_sec->owner, sym_sec); | |
0eee5820 | 684 | |
e7e981d6 | 685 | if (found) |
252b5132 | 686 | { |
e7e981d6 | 687 | symtab.limit->name = found->file_name; |
252b5132 RH |
688 | symtab.limit->mapped = 1; |
689 | } | |
690 | else | |
691 | { | |
692 | symtab.limit->name = core_syms[i]->name; | |
693 | symtab.limit->mapped = 0; | |
694 | } | |
695 | ||
ef368dac | 696 | /* Lookup filename and line number, if we can. */ |
252b5132 | 697 | { |
e7e981d6 NC |
698 | const char * filename; |
699 | const char * func_name; | |
0eee5820 | 700 | |
e7e981d6 NC |
701 | if (get_src_info (symtab.limit->addr, & filename, & func_name, |
702 | & symtab.limit->line_num)) | |
252b5132 RH |
703 | { |
704 | symtab.limit->file = source_file_lookup_path (filename); | |
705 | ||
706 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 707 | gprof. */ |
252b5132 | 708 | #ifdef __osf__ |
ef368dac NC |
709 | /* Suppress symbols that are not function names. This is |
710 | useful to suppress code-labels and aliases. | |
0eee5820 | 711 | |
ef368dac NC |
712 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
713 | labels do not appear in the symbol table info, so this isn't | |
714 | necessary. */ | |
252b5132 RH |
715 | |
716 | if (strcmp (symtab.limit->name, func_name) != 0) | |
717 | { | |
ef368dac NC |
718 | /* The symbol's address maps to a different name, so |
719 | it can't be a function-entry point. This happens | |
720 | for labels, for example. */ | |
252b5132 RH |
721 | DBG (AOUTDEBUG, |
722 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
723 | symtab.limit->name, func_name)); | |
724 | continue; | |
725 | } | |
726 | #endif | |
727 | } | |
728 | } | |
729 | ||
02f2d833 AM |
730 | symtab.limit->is_func = (!core_has_func_syms |
731 | || (core_syms[i]->flags & BSF_FUNCTION) != 0); | |
b34976b6 | 732 | symtab.limit->is_bb_head = TRUE; |
0eee5820 | 733 | |
96d56e9f | 734 | if (cxxclass == 't') |
b34976b6 | 735 | symtab.limit->is_static = TRUE; |
252b5132 | 736 | |
8e1a114b DB |
737 | /* Keep track of the minimum and maximum vma addresses used by all |
738 | symbols. When computing the max_vma, use the ending address of the | |
739 | section containing the symbol, if available. */ | |
252b5132 | 740 | min_vma = MIN (symtab.limit->addr, min_vma); |
c3fcc31e AM |
741 | if (sym_sec) |
742 | max_vma = MAX (bfd_get_section_vma (sym_sec->owner, sym_sec) | |
743 | + bfd_section_size (sym_sec->owner, sym_sec) - 1, | |
744 | max_vma); | |
8e1a114b DB |
745 | else |
746 | max_vma = MAX (symtab.limit->addr, max_vma); | |
252b5132 | 747 | |
252b5132 RH |
748 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", |
749 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
750 | symtab.limit->name, |
751 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
752 | ++symtab.limit; |
753 | } | |
754 | ||
252b5132 RH |
755 | symtab.len = symtab.limit - symtab.base; |
756 | symtab_finalize (&symtab); | |
757 | } | |
758 | ||
ef368dac NC |
759 | /* Read in symbol table from core. |
760 | One symbol per line of source code is entered. */ | |
252b5132 | 761 | |
252b5132 | 762 | void |
e7e981d6 | 763 | core_create_line_syms (void) |
252b5132 RH |
764 | { |
765 | char *prev_name, *prev_filename; | |
1355568a AM |
766 | unsigned int prev_name_len, prev_filename_len; |
767 | bfd_vma vma, min_vma = ~(bfd_vma) 0, max_vma = 0; | |
d401d98a | 768 | Sym *prev, dummy, *sym; |
252b5132 RH |
769 | const char *filename; |
770 | int prev_line_num; | |
771 | Sym_Table ltab; | |
bb02f434 | 772 | bfd_vma vma_high; |
0eee5820 | 773 | |
ef368dac NC |
774 | /* Create symbols for functions as usual. This is necessary in |
775 | cases where parts of a program were not compiled with -g. For | |
776 | those parts we still want to get info at the function level. */ | |
37b1bfcd | 777 | core_create_function_syms (); |
252b5132 | 778 | |
37b1bfcd | 779 | /* Pass 1: count the number of symbols. */ |
ef368dac NC |
780 | |
781 | /* To find all line information, walk through all possible | |
782 | text-space addresses (one by one!) and get the debugging | |
783 | info for each address. When the debugging info changes, | |
784 | it is time to create a new symbol. | |
0eee5820 | 785 | |
ef368dac | 786 | Of course, this is rather slow and it would be better if |
37b1bfcd | 787 | BFD would provide an iterator for enumerating all line infos. */ |
252b5132 RH |
788 | prev_name_len = PATH_MAX; |
789 | prev_filename_len = PATH_MAX; | |
1e9cc1c2 NC |
790 | prev_name = (char *) xmalloc (prev_name_len); |
791 | prev_filename = (char *) xmalloc (prev_filename_len); | |
252b5132 RH |
792 | ltab.len = 0; |
793 | prev_line_num = 0; | |
0eee5820 | 794 | |
67cf9bc5 | 795 | vma_high = core_text_sect->vma + bfd_get_section_size (core_text_sect); |
37b1bfcd | 796 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 | 797 | { |
1355568a | 798 | unsigned int len; |
252b5132 | 799 | |
252b5132 RH |
800 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
801 | || (prev_line_num == dummy.line_num | |
802 | && prev_name != NULL | |
803 | && strcmp (prev_name, dummy.name) == 0 | |
aee9ba6f | 804 | && filename_cmp (prev_filename, filename) == 0)) |
ef368dac | 805 | continue; |
252b5132 RH |
806 | |
807 | ++ltab.len; | |
808 | prev_line_num = dummy.line_num; | |
809 | ||
810 | len = strlen (dummy.name); | |
811 | if (len >= prev_name_len) | |
812 | { | |
813 | prev_name_len = len + 1024; | |
814 | free (prev_name); | |
1e9cc1c2 | 815 | prev_name = (char *) xmalloc (prev_name_len); |
252b5132 | 816 | } |
0eee5820 | 817 | |
252b5132 | 818 | strcpy (prev_name, dummy.name); |
252b5132 | 819 | len = strlen (filename); |
0eee5820 | 820 | |
252b5132 RH |
821 | if (len >= prev_filename_len) |
822 | { | |
823 | prev_filename_len = len + 1024; | |
824 | free (prev_filename); | |
1e9cc1c2 | 825 | prev_filename = (char *) xmalloc (prev_filename_len); |
252b5132 | 826 | } |
0eee5820 | 827 | |
252b5132 RH |
828 | strcpy (prev_filename, filename); |
829 | ||
830 | min_vma = MIN (vma, min_vma); | |
831 | max_vma = MAX (vma, max_vma); | |
832 | } | |
833 | ||
834 | free (prev_name); | |
835 | free (prev_filename); | |
836 | ||
ef368dac | 837 | /* Make room for function symbols, too. */ |
252b5132 RH |
838 | ltab.len += symtab.len; |
839 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
840 | ltab.limit = ltab.base; | |
841 | ||
ef368dac | 842 | /* Pass 2 - create symbols. */ |
252b5132 RH |
843 | |
844 | /* We now set is_static as we go along, rather than by running | |
845 | through the symbol table at the end. | |
846 | ||
847 | The old way called symtab_finalize before the is_static pass, | |
848 | causing a problem since symtab_finalize uses is_static as part of | |
849 | its address conflict resolution algorithm. Since global symbols | |
576a6e4d | 850 | were preferred over static symbols, and all line symbols were |
252b5132 RH |
851 | global at that point, static function names that conflicted with |
852 | their own line numbers (static, but labeled as global) were | |
853 | rejected in favor of the line num. | |
854 | ||
855 | This was not the desired functionality. We always want to keep | |
856 | our function symbols and discard any conflicting line symbols. | |
857 | Perhaps symtab_finalize should be modified to make this | |
858 | distinction as well, but the current fix works and the code is a | |
859 | lot cleaner now. */ | |
252b5132 | 860 | prev = 0; |
0eee5820 | 861 | |
37b1bfcd | 862 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 RH |
863 | { |
864 | sym_init (ltab.limit); | |
0eee5820 | 865 | |
37b1bfcd | 866 | if (!get_src_info (vma, &filename, <ab.limit->name, <ab.limit->line_num) |
252b5132 RH |
867 | || (prev && prev->line_num == ltab.limit->line_num |
868 | && strcmp (prev->name, ltab.limit->name) == 0 | |
aee9ba6f | 869 | && filename_cmp (prev->file->name, filename) == 0)) |
ef368dac | 870 | continue; |
252b5132 | 871 | |
ef368dac | 872 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
873 | ltab.limit->name = xstrdup (ltab.limit->name); |
874 | ltab.limit->file = source_file_lookup_path (filename); | |
875 | ||
37b1bfcd | 876 | ltab.limit->addr = vma; |
252b5132 RH |
877 | |
878 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
879 | 1) the previous symbol, if it's from the same function, or |
880 | 2) a symtab lookup. */ | |
252b5132 RH |
881 | if (prev && ltab.limit->file == prev->file && |
882 | strcmp (ltab.limit->name, prev->name) == 0) | |
883 | { | |
884 | ltab.limit->is_static = prev->is_static; | |
885 | } | |
886 | else | |
887 | { | |
888 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
d401d98a AM |
889 | if (sym) |
890 | ltab.limit->is_static = sym->is_static; | |
252b5132 RH |
891 | } |
892 | ||
893 | prev = ltab.limit; | |
894 | ||
4a607dcc ILT |
895 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
896 | (unsigned long) (ltab.limit - ltab.base), | |
897 | ltab.limit->name, | |
fdcf7d43 | 898 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
899 | ++ltab.limit; |
900 | } | |
901 | ||
ef368dac | 902 | /* Copy in function symbols. */ |
252b5132 RH |
903 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
904 | ltab.limit += symtab.len; | |
905 | ||
906 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
907 | { | |
908 | fprintf (stderr, | |
909 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
910 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
911 | done (1); | |
912 | } | |
913 | ||
ef368dac | 914 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
915 | symtab_finalize (<ab); |
916 | free (symtab.base); | |
917 | symtab = ltab; | |
252b5132 | 918 | } |