Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
82704155 | 3 | Copyright (C) 1999-2019 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); | |
3e8f6abf BE |
54 | extern void sparc_find_call (Sym *, bfd_vma, bfd_vma); |
55 | extern void mips_find_call (Sym *, bfd_vma, bfd_vma); | |
cd2ae971 | 56 | extern void aarch64_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 | ||
38334d6d NC |
75 | #define BUFSIZE (1024) |
76 | /* This is BUFSIZE - 1 as a string. Suitable for use in fprintf/sscanf format strings. */ | |
77 | #define STR_BUFSIZE "1023" | |
78 | ||
252b5132 | 79 | static void |
3e8f6abf | 80 | read_function_mappings (const char *filename) |
252b5132 | 81 | { |
e7e981d6 | 82 | FILE * file = fopen (filename, "r"); |
38334d6d | 83 | char dummy[BUFSIZE]; |
252b5132 | 84 | int count = 0; |
e7e981d6 | 85 | unsigned int i; |
252b5132 RH |
86 | |
87 | if (!file) | |
88 | { | |
89 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
90 | done (1); | |
91 | } | |
92 | ||
93 | /* First parse the mapping file so we know how big we need to | |
94 | make our tables. We also do some sanity checks at this | |
95 | time. */ | |
96 | while (!feof (file)) | |
97 | { | |
98 | int matches; | |
99 | ||
38334d6d | 100 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n:]", dummy); |
252b5132 | 101 | if (!matches) |
74335607 | 102 | parse_error (filename); |
252b5132 RH |
103 | |
104 | /* Just skip messages about files with no symbols. */ | |
105 | if (!strncmp (dummy, "No symbols in ", 14)) | |
106 | { | |
74335607 BE |
107 | matches = fscanf (file, "\n"); |
108 | if (matches == EOF) | |
109 | parse_error (filename); | |
252b5132 RH |
110 | continue; |
111 | } | |
112 | ||
113 | /* Don't care what else is on this line at this point. */ | |
38334d6d | 114 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n]\n", dummy); |
74335607 BE |
115 | if (!matches) |
116 | parse_error (filename); | |
252b5132 RH |
117 | count++; |
118 | } | |
119 | ||
120 | /* Now we know how big we need to make our table. */ | |
121 | symbol_map = ((struct function_map *) | |
122 | xmalloc (count * sizeof (struct function_map))); | |
123 | ||
124 | /* Rewind the input file so we can read it again. */ | |
125 | rewind (file); | |
126 | ||
127 | /* Read each entry and put it into the table. */ | |
128 | count = 0; | |
129 | while (!feof (file)) | |
130 | { | |
131 | int matches; | |
132 | char *tmp; | |
133 | ||
38334d6d | 134 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n:]", dummy); |
252b5132 | 135 | if (!matches) |
74335607 | 136 | parse_error (filename); |
252b5132 RH |
137 | |
138 | /* Just skip messages about files with no symbols. */ | |
139 | if (!strncmp (dummy, "No symbols in ", 14)) | |
140 | { | |
74335607 BE |
141 | matches = fscanf (file, "\n"); |
142 | if (matches == EOF) | |
143 | parse_error (filename); | |
252b5132 RH |
144 | continue; |
145 | } | |
146 | ||
147 | /* dummy has the filename, go ahead and copy it. */ | |
1e9cc1c2 | 148 | symbol_map[count].file_name = (char *) xmalloc (strlen (dummy) + 1); |
252b5132 RH |
149 | strcpy (symbol_map[count].file_name, dummy); |
150 | ||
151 | /* Now we need the function name. */ | |
38334d6d | 152 | matches = fscanf (file, "%" STR_BUFSIZE "[^\n]\n", dummy); |
74335607 BE |
153 | if (!matches) |
154 | parse_error (filename); | |
252b5132 | 155 | tmp = strrchr (dummy, ' ') + 1; |
1e9cc1c2 | 156 | symbol_map[count].function_name = (char *) xmalloc (strlen (tmp) + 1); |
252b5132 RH |
157 | strcpy (symbol_map[count].function_name, tmp); |
158 | count++; | |
159 | } | |
160 | ||
161 | /* Record the size of the map table for future reference. */ | |
162 | symbol_map_count = count; | |
252b5132 | 163 | |
e7e981d6 | 164 | for (i = 0; i < symbol_map_count; ++i) |
aee9ba6f KT |
165 | if (i == 0 |
166 | || filename_cmp (symbol_map[i].file_name, symbol_map[i - 1].file_name)) | |
e7e981d6 NC |
167 | symbol_map[i].is_first = 1; |
168 | ||
169 | qsort (symbol_map, symbol_map_count, sizeof (struct function_map), cmp_symbol_map); | |
5af84f93 NC |
170 | |
171 | fclose (file); | |
e7e981d6 | 172 | } |
ef368dac | 173 | |
252b5132 | 174 | void |
e7e981d6 | 175 | core_init (const char * aout_name) |
252b5132 | 176 | { |
37b1bfcd | 177 | int core_sym_bytes; |
2f041bf7 AM |
178 | asymbol *synthsyms; |
179 | long synth_count; | |
180 | ||
1355568a | 181 | core_bfd = bfd_openr (aout_name, 0); |
252b5132 RH |
182 | |
183 | if (!core_bfd) | |
184 | { | |
1355568a | 185 | perror (aout_name); |
252b5132 RH |
186 | done (1); |
187 | } | |
188 | ||
189 | if (!bfd_check_format (core_bfd, bfd_object)) | |
190 | { | |
11010f5a | 191 | fprintf (stderr, _("%s: %s: not in executable format\n"), whoami, aout_name); |
252b5132 RH |
192 | done (1); |
193 | } | |
194 | ||
ef368dac | 195 | /* Get core's text section. */ |
252b5132 RH |
196 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
197 | if (!core_text_sect) | |
198 | { | |
199 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
200 | if (!core_text_sect) | |
201 | { | |
202 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
1355568a | 203 | whoami, aout_name); |
252b5132 RH |
204 | done (1); |
205 | } | |
206 | } | |
207 | ||
ef368dac | 208 | /* Read core's symbol table. */ |
252b5132 | 209 | |
ef368dac | 210 | /* This will probably give us more than we need, but that's ok. */ |
37b1bfcd BE |
211 | core_sym_bytes = bfd_get_symtab_upper_bound (core_bfd); |
212 | if (core_sym_bytes < 0) | |
252b5132 | 213 | { |
1355568a | 214 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
215 | bfd_errmsg (bfd_get_error ())); |
216 | done (1); | |
217 | } | |
218 | ||
37b1bfcd | 219 | core_syms = (asymbol **) xmalloc (core_sym_bytes); |
252b5132 | 220 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); |
0eee5820 | 221 | |
252b5132 RH |
222 | if (core_num_syms < 0) |
223 | { | |
1355568a | 224 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
225 | bfd_errmsg (bfd_get_error ())); |
226 | done (1); | |
227 | } | |
228 | ||
2f041bf7 AM |
229 | synth_count = bfd_get_synthetic_symtab (core_bfd, core_num_syms, core_syms, |
230 | 0, NULL, &synthsyms); | |
231 | if (synth_count > 0) | |
232 | { | |
233 | asymbol **symp; | |
234 | long new_size; | |
235 | long i; | |
236 | ||
237 | new_size = (core_num_syms + synth_count + 1) * sizeof (*core_syms); | |
1e9cc1c2 | 238 | core_syms = (asymbol **) xrealloc (core_syms, new_size); |
2f041bf7 AM |
239 | symp = core_syms + core_num_syms; |
240 | core_num_syms += synth_count; | |
241 | for (i = 0; i < synth_count; i++) | |
242 | *symp++ = synthsyms + i; | |
243 | *symp = 0; | |
244 | } | |
245 | ||
252b5132 RH |
246 | min_insn_size = 1; |
247 | offset_to_code = 0; | |
248 | ||
249 | switch (bfd_get_arch (core_bfd)) | |
250 | { | |
251 | case bfd_arch_vax: | |
252b5132 RH |
252 | offset_to_code = 2; |
253 | break; | |
254 | ||
255 | case bfd_arch_alpha: | |
256 | min_insn_size = 4; | |
257 | break; | |
258 | ||
259 | default: | |
260 | break; | |
261 | } | |
262 | ||
263 | if (function_mapping_file) | |
264 | read_function_mappings (function_mapping_file); | |
265 | } | |
266 | ||
ef368dac | 267 | /* Read in the text space of an a.out file. */ |
252b5132 | 268 | |
252b5132 | 269 | void |
3e8f6abf | 270 | core_get_text_space (bfd *cbfd) |
252b5132 | 271 | { |
67cf9bc5 | 272 | core_text_space = malloc (bfd_get_section_size (core_text_sect)); |
252b5132 RH |
273 | |
274 | if (!core_text_space) | |
275 | { | |
fdcf7d43 | 276 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
67cf9bc5 | 277 | whoami, (unsigned long) bfd_get_section_size (core_text_sect)); |
252b5132 RH |
278 | done (1); |
279 | } | |
0eee5820 | 280 | |
1355568a | 281 | if (!bfd_get_section_contents (cbfd, core_text_sect, core_text_space, |
67cf9bc5 | 282 | 0, bfd_get_section_size (core_text_sect))) |
252b5132 RH |
283 | { |
284 | bfd_perror ("bfd_get_section_contents"); | |
285 | free (core_text_space); | |
286 | core_text_space = 0; | |
287 | } | |
0eee5820 | 288 | |
252b5132 | 289 | if (!core_text_space) |
ef368dac | 290 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
291 | } |
292 | ||
293 | ||
294 | void | |
3e8f6abf | 295 | find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
252b5132 | 296 | { |
b3296dc5 VP |
297 | if (core_text_space == 0) |
298 | return; | |
299 | ||
300 | hist_clip_symbol_address (&p_lowpc, &p_highpc); | |
301 | ||
252b5132 RH |
302 | switch (bfd_get_arch (core_bfd)) |
303 | { | |
304 | case bfd_arch_i386: | |
305 | i386_find_call (parent, p_lowpc, p_highpc); | |
306 | break; | |
307 | ||
308 | case bfd_arch_alpha: | |
309 | alpha_find_call (parent, p_lowpc, p_highpc); | |
310 | break; | |
311 | ||
312 | case bfd_arch_vax: | |
313 | vax_find_call (parent, p_lowpc, p_highpc); | |
314 | break; | |
315 | ||
316 | case bfd_arch_sparc: | |
317 | sparc_find_call (parent, p_lowpc, p_highpc); | |
318 | break; | |
319 | ||
ec0806ec JT |
320 | case bfd_arch_mips: |
321 | mips_find_call (parent, p_lowpc, p_highpc); | |
322 | break; | |
323 | ||
cd2ae971 AM |
324 | case bfd_arch_aarch64: |
325 | aarch64_find_call (parent, p_lowpc, p_highpc); | |
326 | break; | |
327 | ||
252b5132 RH |
328 | default: |
329 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
330 | whoami, bfd_printable_name(core_bfd)); | |
331 | ||
332 | /* Don't give the error more than once. */ | |
b34976b6 | 333 | ignore_direct_calls = FALSE; |
252b5132 RH |
334 | } |
335 | } | |
336 | ||
ef368dac | 337 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
338 | 0 -> symbol is not interesting to us |
339 | 'T' -> symbol is a global name | |
340 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 341 | |
252b5132 | 342 | static int |
3e8f6abf | 343 | core_sym_class (asymbol *sym) |
252b5132 RH |
344 | { |
345 | symbol_info syminfo; | |
346 | const char *name; | |
347 | char sym_prefix; | |
348 | int i; | |
349 | ||
350 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 351 | return 0; |
252b5132 | 352 | |
ef368dac NC |
353 | /* Must be a text symbol, and static text symbols |
354 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
355 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
356 | { | |
357 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
358 | sym->name)); | |
359 | return 0; | |
360 | } | |
361 | ||
362 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
363 | i = syminfo.type; | |
364 | ||
365 | if (i == 'T') | |
ef368dac | 366 | return i; /* It's a global symbol. */ |
252b5132 RH |
367 | |
368 | if (i == 'W') | |
ef368dac NC |
369 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
370 | also be a data symbol. */ | |
371 | return 'T'; | |
252b5132 RH |
372 | |
373 | if (i != 't') | |
374 | { | |
ef368dac | 375 | /* Not a static text symbol. */ |
252b5132 RH |
376 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
377 | sym->name, i)); | |
378 | return 0; | |
379 | } | |
380 | ||
ef368dac | 381 | /* Do some more filtering on static function-names. */ |
252b5132 | 382 | if (ignore_static_funcs) |
ef368dac NC |
383 | return 0; |
384 | ||
385 | /* Can't zero-length name or funny characters in name, where | |
386 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 387 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 388 | return 0; |
252b5132 RH |
389 | |
390 | for (name = sym->name; *name; ++name) | |
391 | { | |
3289fe0c NC |
392 | if (*name == '$') |
393 | return 0; | |
394 | ||
f36485f0 | 395 | while (*name == '.') |
183e4ed8 | 396 | { |
f36485f0 NC |
397 | /* Allow both nested subprograms (which end with ".NNN", where N is |
398 | a digit) and GCC cloned functions (which contain ".clone"). | |
399 | Allow for multiple iterations of both - apparently GCC can clone | |
400 | clones and subprograms. */ | |
401 | int digit_seen = 0; | |
d165016d AM |
402 | #define CLONE_NAME ".clone." |
403 | #define CLONE_NAME_LEN strlen (CLONE_NAME) | |
404 | #define CONSTPROP_NAME ".constprop." | |
405 | #define CONSTPROP_NAME_LEN strlen (CONSTPROP_NAME) | |
406 | ||
f36485f0 NC |
407 | if (strlen (name) > CLONE_NAME_LEN |
408 | && strncmp (name, CLONE_NAME, CLONE_NAME_LEN) == 0) | |
409 | name += CLONE_NAME_LEN - 1; | |
183e4ed8 | 410 | |
d165016d AM |
411 | else if (strlen (name) > CONSTPROP_NAME_LEN |
412 | && strncmp (name, CONSTPROP_NAME, CONSTPROP_NAME_LEN) == 0) | |
413 | name += CONSTPROP_NAME_LEN - 1; | |
414 | ||
183e4ed8 | 415 | for (name++; *name; name++) |
f36485f0 NC |
416 | if (digit_seen && *name == '.') |
417 | break; | |
418 | else if (ISDIGIT (*name)) | |
419 | digit_seen = 1; | |
420 | else | |
183e4ed8 | 421 | return 0; |
183e4ed8 | 422 | } |
ef368dac | 423 | } |
0eee5820 | 424 | |
ef368dac NC |
425 | /* On systems where the C compiler adds an underscore to all |
426 | names, static names without underscores seem usually to be | |
427 | labels in hand written assembler in the library. We don't want | |
428 | these names. This is certainly necessary on a Sparc running | |
429 | SunOS 4.1 (try profiling a program that does a lot of | |
430 | division). I don't know whether it has harmful side effects on | |
431 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 432 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 433 | |
252b5132 | 434 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 435 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 436 | language. We want to ignore these, since sometimes they mask |
ef368dac | 437 | the real function. (dj@ctron) */ |
252b5132 RH |
438 | || !strncmp (sym->name, "__gnu_compiled", 14) |
439 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
440 | { | |
441 | return 0; | |
442 | } | |
443 | ||
ef368dac NC |
444 | /* If the object file supports marking of function symbols, then |
445 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
446 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
447 | return 0; | |
448 | ||
ef368dac | 449 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
450 | } |
451 | ||
ef368dac | 452 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 453 | |
b34976b6 | 454 | static bfd_boolean |
3e8f6abf | 455 | get_src_info (bfd_vma addr, const char **filename, const char **name, int *line_num) |
252b5132 RH |
456 | { |
457 | const char *fname = 0, *func_name = 0; | |
458 | int l = 0; | |
459 | ||
460 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
461 | addr - core_text_sect->vma, | |
462 | &fname, &func_name, (unsigned int *) &l) | |
463 | && fname && func_name && l) | |
464 | { | |
465 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 466 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
467 | *filename = fname; |
468 | *name = func_name; | |
469 | *line_num = l; | |
b34976b6 | 470 | return TRUE; |
252b5132 RH |
471 | } |
472 | else | |
473 | { | |
474 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
0af1713e AM |
475 | (unsigned long) addr, |
476 | fname ? fname : "<unknown>", l, | |
252b5132 | 477 | func_name ? func_name : "<unknown>")); |
b34976b6 | 478 | return FALSE; |
252b5132 RH |
479 | } |
480 | } | |
481 | ||
38334d6d NC |
482 | static char buf[BUFSIZE]; |
483 | static char address[BUFSIZE]; | |
484 | static char name[BUFSIZE]; | |
485 | ||
0e27a8f6 NC |
486 | /* Return number of symbols in a symbol-table file. */ |
487 | ||
00927233 | 488 | static unsigned int |
0e27a8f6 NC |
489 | num_of_syms_in (FILE * f) |
490 | { | |
0e27a8f6 | 491 | char type; |
00927233 | 492 | unsigned int num = 0; |
d165016d | 493 | |
0e27a8f6 NC |
494 | while (!feof (f) && fgets (buf, BUFSIZE - 1, f)) |
495 | { | |
38334d6d | 496 | if (sscanf (buf, "%" STR_BUFSIZE "s %c %" STR_BUFSIZE "s", address, &type, name) == 3) |
0e27a8f6 | 497 | if (type == 't' || type == 'T') |
c6165913 NC |
498 | { |
499 | /* PR 20499 - prevent integer overflow computing argument to xmalloc. */ | |
500 | if (++num >= UINT_MAX / sizeof (Sym)) | |
501 | return -1U; | |
502 | } | |
0e27a8f6 NC |
503 | } |
504 | ||
0e27a8f6 NC |
505 | return num; |
506 | } | |
507 | ||
508 | /* Read symbol table from a file. */ | |
509 | ||
510 | void | |
511 | core_create_syms_from (const char * sym_table_file) | |
512 | { | |
0e27a8f6 | 513 | char type; |
0e27a8f6 NC |
514 | bfd_vma min_vma = ~(bfd_vma) 0; |
515 | bfd_vma max_vma = 0; | |
516 | FILE * f; | |
517 | ||
518 | f = fopen (sym_table_file, "r"); | |
519 | if (!f) | |
520 | { | |
521 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, sym_table_file); | |
522 | done (1); | |
523 | } | |
524 | ||
525 | /* Pass 1 - determine upper bound on number of function names. */ | |
526 | symtab.len = num_of_syms_in (f); | |
527 | ||
528 | if (symtab.len == 0) | |
529 | { | |
530 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, sym_table_file); | |
531 | done (1); | |
532 | } | |
c6165913 | 533 | else if (symtab.len == -1U) |
00927233 | 534 | { |
c6165913 NC |
535 | fprintf (stderr, _("%s: file `%s' has too many symbols\n"), |
536 | whoami, sym_table_file); | |
00927233 NC |
537 | done (1); |
538 | } | |
0e27a8f6 NC |
539 | |
540 | symtab.base = (Sym *) xmalloc (symtab.len * sizeof (Sym)); | |
541 | ||
542 | /* Pass 2 - create symbols. */ | |
543 | symtab.limit = symtab.base; | |
544 | ||
545 | if (fseek (f, 0, SEEK_SET) != 0) | |
546 | { | |
547 | perror (sym_table_file); | |
548 | done (1); | |
549 | } | |
550 | ||
1ad40a04 | 551 | while (!feof (f) && fgets (buf, BUFSIZE - 1, f)) |
0e27a8f6 | 552 | { |
38334d6d NC |
553 | if (sscanf (buf, "%" STR_BUFSIZE "s %c %" STR_BUFSIZE "s", address, &type, name) != 3) |
554 | continue; | |
555 | if (type != 't' && type != 'T') | |
556 | continue; | |
4ca0333f | 557 | |
0e27a8f6 NC |
558 | sym_init (symtab.limit); |
559 | ||
f89ddd70 | 560 | sscanf (address, "%" BFD_VMA_FMT "x", &(symtab.limit->addr) ); |
0e27a8f6 NC |
561 | |
562 | symtab.limit->name = (char *) xmalloc (strlen (name) + 1); | |
563 | strcpy ((char *) symtab.limit->name, name); | |
564 | symtab.limit->mapped = 0; | |
565 | symtab.limit->is_func = TRUE; | |
566 | symtab.limit->is_bb_head = TRUE; | |
567 | symtab.limit->is_static = (type == 't'); | |
568 | min_vma = MIN (symtab.limit->addr, min_vma); | |
569 | max_vma = MAX (symtab.limit->addr, max_vma); | |
570 | ||
571 | ++symtab.limit; | |
572 | } | |
573 | fclose (f); | |
574 | ||
575 | symtab.len = symtab.limit - symtab.base; | |
576 | symtab_finalize (&symtab); | |
0e27a8f6 NC |
577 | } |
578 | ||
e7e981d6 NC |
579 | static int |
580 | search_mapped_symbol (const void * l, const void * r) | |
581 | { | |
582 | return strcmp ((const char *) l, ((const struct function_map *) r)->function_name); | |
583 | } | |
584 | ||
ef368dac NC |
585 | /* Read in symbol table from core. |
586 | One symbol per function is entered. */ | |
252b5132 | 587 | |
252b5132 | 588 | void |
e7e981d6 | 589 | core_create_function_syms (void) |
252b5132 | 590 | { |
e7e981d6 | 591 | bfd_vma min_vma = ~ (bfd_vma) 0; |
1355568a | 592 | bfd_vma max_vma = 0; |
96d56e9f | 593 | int cxxclass; |
e7e981d6 | 594 | long i; |
ca25b5ba | 595 | struct function_map * found = NULL; |
02f2d833 AM |
596 | int core_has_func_syms = 0; |
597 | ||
598 | switch (core_bfd->xvec->flavour) | |
599 | { | |
600 | default: | |
601 | break; | |
602 | case bfd_target_coff_flavour: | |
603 | case bfd_target_ecoff_flavour: | |
604 | case bfd_target_xcoff_flavour: | |
605 | case bfd_target_elf_flavour: | |
02f2d833 AM |
606 | case bfd_target_som_flavour: |
607 | core_has_func_syms = 1; | |
608 | } | |
252b5132 | 609 | |
ef368dac | 610 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 611 | symtab.len = 0; |
0eee5820 | 612 | |
252b5132 RH |
613 | for (i = 0; i < core_num_syms; ++i) |
614 | { | |
615 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 616 | continue; |
252b5132 | 617 | |
e7e981d6 | 618 | /* Don't create a symtab entry for a function that has |
252b5132 RH |
619 | a mapping to a file, unless it's the first function |
620 | in the file. */ | |
ca25b5ba TG |
621 | if (symbol_map_count != 0) |
622 | { | |
623 | /* Note: some systems (SunOS 5.8) crash if bsearch base argument | |
624 | is NULL. */ | |
625 | found = (struct function_map *) bsearch | |
626 | (core_syms[i]->name, symbol_map, symbol_map_count, | |
627 | sizeof (struct function_map), search_mapped_symbol); | |
628 | } | |
e7e981d6 | 629 | if (found == NULL || found->is_first) |
0eee5820 | 630 | ++symtab.len; |
252b5132 RH |
631 | } |
632 | ||
633 | if (symtab.len == 0) | |
634 | { | |
635 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
636 | done (1); | |
637 | } | |
638 | ||
d401d98a | 639 | symtab.base = (Sym *) xmalloc (symtab.len * sizeof (Sym)); |
252b5132 | 640 | |
ef368dac | 641 | /* Pass 2 - create symbols. */ |
252b5132 | 642 | symtab.limit = symtab.base; |
0eee5820 | 643 | |
252b5132 RH |
644 | for (i = 0; i < core_num_syms; ++i) |
645 | { | |
c3fcc31e AM |
646 | asection *sym_sec; |
647 | ||
96d56e9f | 648 | cxxclass = core_sym_class (core_syms[i]); |
0eee5820 | 649 | |
96d56e9f | 650 | if (!cxxclass) |
252b5132 RH |
651 | { |
652 | DBG (AOUTDEBUG, | |
653 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
654 | (unsigned long) core_syms[i]->value, |
655 | core_syms[i]->name)); | |
252b5132 RH |
656 | continue; |
657 | } | |
0eee5820 | 658 | |
ca25b5ba TG |
659 | if (symbol_map_count != 0) |
660 | { | |
661 | /* Note: some systems (SunOS 5.8) crash if bsearch base argument | |
662 | is NULL. */ | |
663 | found = (struct function_map *) bsearch | |
664 | (core_syms[i]->name, symbol_map, symbol_map_count, | |
665 | sizeof (struct function_map), search_mapped_symbol); | |
666 | } | |
e7e981d6 | 667 | if (found && ! found->is_first) |
252b5132 RH |
668 | continue; |
669 | ||
670 | sym_init (symtab.limit); | |
671 | ||
ef368dac | 672 | /* Symbol offsets are always section-relative. */ |
c3fcc31e AM |
673 | sym_sec = core_syms[i]->section; |
674 | symtab.limit->addr = core_syms[i]->value; | |
675 | if (sym_sec) | |
676 | symtab.limit->addr += bfd_get_section_vma (sym_sec->owner, sym_sec); | |
0eee5820 | 677 | |
e7e981d6 | 678 | if (found) |
252b5132 | 679 | { |
e7e981d6 | 680 | symtab.limit->name = found->file_name; |
252b5132 RH |
681 | symtab.limit->mapped = 1; |
682 | } | |
683 | else | |
684 | { | |
685 | symtab.limit->name = core_syms[i]->name; | |
686 | symtab.limit->mapped = 0; | |
687 | } | |
688 | ||
ef368dac | 689 | /* Lookup filename and line number, if we can. */ |
252b5132 | 690 | { |
e7e981d6 NC |
691 | const char * filename; |
692 | const char * func_name; | |
0eee5820 | 693 | |
e7e981d6 NC |
694 | if (get_src_info (symtab.limit->addr, & filename, & func_name, |
695 | & symtab.limit->line_num)) | |
252b5132 RH |
696 | { |
697 | symtab.limit->file = source_file_lookup_path (filename); | |
698 | ||
699 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 700 | gprof. */ |
252b5132 | 701 | #ifdef __osf__ |
ef368dac NC |
702 | /* Suppress symbols that are not function names. This is |
703 | useful to suppress code-labels and aliases. | |
0eee5820 | 704 | |
ef368dac NC |
705 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
706 | labels do not appear in the symbol table info, so this isn't | |
707 | necessary. */ | |
252b5132 RH |
708 | |
709 | if (strcmp (symtab.limit->name, func_name) != 0) | |
710 | { | |
ef368dac NC |
711 | /* The symbol's address maps to a different name, so |
712 | it can't be a function-entry point. This happens | |
713 | for labels, for example. */ | |
252b5132 RH |
714 | DBG (AOUTDEBUG, |
715 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
716 | symtab.limit->name, func_name)); | |
717 | continue; | |
718 | } | |
719 | #endif | |
720 | } | |
721 | } | |
722 | ||
02f2d833 AM |
723 | symtab.limit->is_func = (!core_has_func_syms |
724 | || (core_syms[i]->flags & BSF_FUNCTION) != 0); | |
b34976b6 | 725 | symtab.limit->is_bb_head = TRUE; |
0eee5820 | 726 | |
96d56e9f | 727 | if (cxxclass == 't') |
b34976b6 | 728 | symtab.limit->is_static = TRUE; |
252b5132 | 729 | |
8e1a114b DB |
730 | /* Keep track of the minimum and maximum vma addresses used by all |
731 | symbols. When computing the max_vma, use the ending address of the | |
732 | section containing the symbol, if available. */ | |
252b5132 | 733 | min_vma = MIN (symtab.limit->addr, min_vma); |
c3fcc31e AM |
734 | if (sym_sec) |
735 | max_vma = MAX (bfd_get_section_vma (sym_sec->owner, sym_sec) | |
736 | + bfd_section_size (sym_sec->owner, sym_sec) - 1, | |
737 | max_vma); | |
8e1a114b DB |
738 | else |
739 | max_vma = MAX (symtab.limit->addr, max_vma); | |
252b5132 | 740 | |
252b5132 RH |
741 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", |
742 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
743 | symtab.limit->name, |
744 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
745 | ++symtab.limit; |
746 | } | |
747 | ||
252b5132 RH |
748 | symtab.len = symtab.limit - symtab.base; |
749 | symtab_finalize (&symtab); | |
750 | } | |
751 | ||
ef368dac NC |
752 | /* Read in symbol table from core. |
753 | One symbol per line of source code is entered. */ | |
252b5132 | 754 | |
252b5132 | 755 | void |
e7e981d6 | 756 | core_create_line_syms (void) |
252b5132 RH |
757 | { |
758 | char *prev_name, *prev_filename; | |
1355568a AM |
759 | unsigned int prev_name_len, prev_filename_len; |
760 | bfd_vma vma, min_vma = ~(bfd_vma) 0, max_vma = 0; | |
d401d98a | 761 | Sym *prev, dummy, *sym; |
252b5132 RH |
762 | const char *filename; |
763 | int prev_line_num; | |
764 | Sym_Table ltab; | |
bb02f434 | 765 | bfd_vma vma_high; |
0eee5820 | 766 | |
ef368dac NC |
767 | /* Create symbols for functions as usual. This is necessary in |
768 | cases where parts of a program were not compiled with -g. For | |
769 | those parts we still want to get info at the function level. */ | |
37b1bfcd | 770 | core_create_function_syms (); |
252b5132 | 771 | |
37b1bfcd | 772 | /* Pass 1: count the number of symbols. */ |
ef368dac NC |
773 | |
774 | /* To find all line information, walk through all possible | |
775 | text-space addresses (one by one!) and get the debugging | |
776 | info for each address. When the debugging info changes, | |
777 | it is time to create a new symbol. | |
0eee5820 | 778 | |
ef368dac | 779 | Of course, this is rather slow and it would be better if |
37b1bfcd | 780 | BFD would provide an iterator for enumerating all line infos. */ |
252b5132 RH |
781 | prev_name_len = PATH_MAX; |
782 | prev_filename_len = PATH_MAX; | |
1e9cc1c2 NC |
783 | prev_name = (char *) xmalloc (prev_name_len); |
784 | prev_filename = (char *) xmalloc (prev_filename_len); | |
252b5132 RH |
785 | ltab.len = 0; |
786 | prev_line_num = 0; | |
0eee5820 | 787 | |
67cf9bc5 | 788 | vma_high = core_text_sect->vma + bfd_get_section_size (core_text_sect); |
37b1bfcd | 789 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 | 790 | { |
1355568a | 791 | unsigned int len; |
252b5132 | 792 | |
252b5132 RH |
793 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
794 | || (prev_line_num == dummy.line_num | |
795 | && prev_name != NULL | |
796 | && strcmp (prev_name, dummy.name) == 0 | |
aee9ba6f | 797 | && filename_cmp (prev_filename, filename) == 0)) |
ef368dac | 798 | continue; |
252b5132 RH |
799 | |
800 | ++ltab.len; | |
801 | prev_line_num = dummy.line_num; | |
802 | ||
803 | len = strlen (dummy.name); | |
804 | if (len >= prev_name_len) | |
805 | { | |
806 | prev_name_len = len + 1024; | |
807 | free (prev_name); | |
1e9cc1c2 | 808 | prev_name = (char *) xmalloc (prev_name_len); |
252b5132 | 809 | } |
0eee5820 | 810 | |
252b5132 | 811 | strcpy (prev_name, dummy.name); |
252b5132 | 812 | len = strlen (filename); |
0eee5820 | 813 | |
252b5132 RH |
814 | if (len >= prev_filename_len) |
815 | { | |
816 | prev_filename_len = len + 1024; | |
817 | free (prev_filename); | |
1e9cc1c2 | 818 | prev_filename = (char *) xmalloc (prev_filename_len); |
252b5132 | 819 | } |
0eee5820 | 820 | |
252b5132 RH |
821 | strcpy (prev_filename, filename); |
822 | ||
823 | min_vma = MIN (vma, min_vma); | |
824 | max_vma = MAX (vma, max_vma); | |
825 | } | |
826 | ||
827 | free (prev_name); | |
828 | free (prev_filename); | |
829 | ||
ef368dac | 830 | /* Make room for function symbols, too. */ |
252b5132 RH |
831 | ltab.len += symtab.len; |
832 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
833 | ltab.limit = ltab.base; | |
834 | ||
ef368dac | 835 | /* Pass 2 - create symbols. */ |
252b5132 RH |
836 | |
837 | /* We now set is_static as we go along, rather than by running | |
838 | through the symbol table at the end. | |
839 | ||
840 | The old way called symtab_finalize before the is_static pass, | |
841 | causing a problem since symtab_finalize uses is_static as part of | |
842 | its address conflict resolution algorithm. Since global symbols | |
576a6e4d | 843 | were preferred over static symbols, and all line symbols were |
252b5132 RH |
844 | global at that point, static function names that conflicted with |
845 | their own line numbers (static, but labeled as global) were | |
846 | rejected in favor of the line num. | |
847 | ||
848 | This was not the desired functionality. We always want to keep | |
849 | our function symbols and discard any conflicting line symbols. | |
850 | Perhaps symtab_finalize should be modified to make this | |
851 | distinction as well, but the current fix works and the code is a | |
852 | lot cleaner now. */ | |
252b5132 | 853 | prev = 0; |
0eee5820 | 854 | |
37b1bfcd | 855 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 RH |
856 | { |
857 | sym_init (ltab.limit); | |
0eee5820 | 858 | |
37b1bfcd | 859 | if (!get_src_info (vma, &filename, <ab.limit->name, <ab.limit->line_num) |
252b5132 RH |
860 | || (prev && prev->line_num == ltab.limit->line_num |
861 | && strcmp (prev->name, ltab.limit->name) == 0 | |
aee9ba6f | 862 | && filename_cmp (prev->file->name, filename) == 0)) |
ef368dac | 863 | continue; |
252b5132 | 864 | |
ef368dac | 865 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
866 | ltab.limit->name = xstrdup (ltab.limit->name); |
867 | ltab.limit->file = source_file_lookup_path (filename); | |
868 | ||
37b1bfcd | 869 | ltab.limit->addr = vma; |
252b5132 RH |
870 | |
871 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
872 | 1) the previous symbol, if it's from the same function, or |
873 | 2) a symtab lookup. */ | |
252b5132 RH |
874 | if (prev && ltab.limit->file == prev->file && |
875 | strcmp (ltab.limit->name, prev->name) == 0) | |
876 | { | |
877 | ltab.limit->is_static = prev->is_static; | |
878 | } | |
879 | else | |
880 | { | |
881 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
d401d98a AM |
882 | if (sym) |
883 | ltab.limit->is_static = sym->is_static; | |
252b5132 RH |
884 | } |
885 | ||
886 | prev = ltab.limit; | |
887 | ||
4a607dcc ILT |
888 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
889 | (unsigned long) (ltab.limit - ltab.base), | |
890 | ltab.limit->name, | |
fdcf7d43 | 891 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
892 | ++ltab.limit; |
893 | } | |
894 | ||
ef368dac | 895 | /* Copy in function symbols. */ |
252b5132 RH |
896 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
897 | ltab.limit += symtab.len; | |
898 | ||
899 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
900 | { | |
901 | fprintf (stderr, | |
902 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
903 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
904 | done (1); | |
905 | } | |
906 | ||
ef368dac | 907 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
908 | symtab_finalize (<ab); |
909 | free (symtab.base); | |
910 | symtab = ltab; | |
252b5132 | 911 | } |