Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
2f041bf7 | 3 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
d6a39701 | 4 | 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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 RH |
23 | #include "libiberty.h" |
24 | #include "gprof.h" | |
6d9c411a AM |
25 | #include "search_list.h" |
26 | #include "source.h" | |
252b5132 | 27 | #include "symtab.h" |
6d9c411a | 28 | #include "corefile.h" |
252b5132 RH |
29 | |
30 | bfd *core_bfd; | |
9e972ca0 BE |
31 | static int core_num_syms; |
32 | static asymbol **core_syms; | |
252b5132 RH |
33 | asection *core_text_sect; |
34 | PTR core_text_space; | |
35 | ||
9e972ca0 | 36 | static int min_insn_size; |
252b5132 RH |
37 | int offset_to_code; |
38 | ||
39 | /* For mapping symbols to specific .o files during file ordering. */ | |
252b5132 RH |
40 | struct function_map *symbol_map; |
41 | unsigned int symbol_map_count; | |
42 | ||
3e8f6abf BE |
43 | static void read_function_mappings (const char *); |
44 | static int core_sym_class (asymbol *); | |
b34976b6 | 45 | static bfd_boolean get_src_info |
3e8f6abf | 46 | (bfd_vma, const char **, const char **, int *); |
1355568a | 47 | |
3e8f6abf BE |
48 | extern void i386_find_call (Sym *, bfd_vma, bfd_vma); |
49 | extern void alpha_find_call (Sym *, bfd_vma, bfd_vma); | |
50 | extern void vax_find_call (Sym *, bfd_vma, bfd_vma); | |
51 | extern void tahoe_find_call (Sym *, bfd_vma, bfd_vma); | |
52 | extern void sparc_find_call (Sym *, bfd_vma, bfd_vma); | |
53 | extern void mips_find_call (Sym *, bfd_vma, bfd_vma); | |
252b5132 | 54 | |
74335607 BE |
55 | static void |
56 | parse_error (const char *filename) | |
57 | { | |
58 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), whoami, filename); | |
59 | done (1); | |
60 | } | |
61 | ||
252b5132 | 62 | static void |
3e8f6abf | 63 | read_function_mappings (const char *filename) |
252b5132 RH |
64 | { |
65 | FILE *file = fopen (filename, "r"); | |
66 | char dummy[1024]; | |
67 | int count = 0; | |
68 | ||
69 | if (!file) | |
70 | { | |
71 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
72 | done (1); | |
73 | } | |
74 | ||
75 | /* First parse the mapping file so we know how big we need to | |
76 | make our tables. We also do some sanity checks at this | |
77 | time. */ | |
78 | while (!feof (file)) | |
79 | { | |
80 | int matches; | |
81 | ||
82 | matches = fscanf (file, "%[^\n:]", dummy); | |
83 | if (!matches) | |
74335607 | 84 | parse_error (filename); |
252b5132 RH |
85 | |
86 | /* Just skip messages about files with no symbols. */ | |
87 | if (!strncmp (dummy, "No symbols in ", 14)) | |
88 | { | |
74335607 BE |
89 | matches = fscanf (file, "\n"); |
90 | if (matches == EOF) | |
91 | parse_error (filename); | |
252b5132 RH |
92 | continue; |
93 | } | |
94 | ||
95 | /* Don't care what else is on this line at this point. */ | |
74335607 BE |
96 | matches = fscanf (file, "%[^\n]\n", dummy); |
97 | if (!matches) | |
98 | parse_error (filename); | |
252b5132 RH |
99 | count++; |
100 | } | |
101 | ||
102 | /* Now we know how big we need to make our table. */ | |
103 | symbol_map = ((struct function_map *) | |
104 | xmalloc (count * sizeof (struct function_map))); | |
105 | ||
106 | /* Rewind the input file so we can read it again. */ | |
107 | rewind (file); | |
108 | ||
109 | /* Read each entry and put it into the table. */ | |
110 | count = 0; | |
111 | while (!feof (file)) | |
112 | { | |
113 | int matches; | |
114 | char *tmp; | |
115 | ||
116 | matches = fscanf (file, "%[^\n:]", dummy); | |
117 | if (!matches) | |
74335607 | 118 | parse_error (filename); |
252b5132 RH |
119 | |
120 | /* Just skip messages about files with no symbols. */ | |
121 | if (!strncmp (dummy, "No symbols in ", 14)) | |
122 | { | |
74335607 BE |
123 | matches = fscanf (file, "\n"); |
124 | if (matches == EOF) | |
125 | parse_error (filename); | |
252b5132 RH |
126 | continue; |
127 | } | |
128 | ||
129 | /* dummy has the filename, go ahead and copy it. */ | |
130 | symbol_map[count].file_name = xmalloc (strlen (dummy) + 1); | |
131 | strcpy (symbol_map[count].file_name, dummy); | |
132 | ||
133 | /* Now we need the function name. */ | |
74335607 BE |
134 | matches = fscanf (file, "%[^\n]\n", dummy); |
135 | if (!matches) | |
136 | parse_error (filename); | |
252b5132 RH |
137 | tmp = strrchr (dummy, ' ') + 1; |
138 | symbol_map[count].function_name = xmalloc (strlen (tmp) + 1); | |
139 | strcpy (symbol_map[count].function_name, tmp); | |
140 | count++; | |
141 | } | |
142 | ||
143 | /* Record the size of the map table for future reference. */ | |
144 | symbol_map_count = count; | |
145 | } | |
146 | ||
ef368dac | 147 | |
252b5132 | 148 | void |
3e8f6abf | 149 | core_init (const char *aout_name) |
252b5132 | 150 | { |
37b1bfcd | 151 | int core_sym_bytes; |
2f041bf7 AM |
152 | asymbol *synthsyms; |
153 | long synth_count; | |
154 | ||
1355568a | 155 | core_bfd = bfd_openr (aout_name, 0); |
252b5132 RH |
156 | |
157 | if (!core_bfd) | |
158 | { | |
1355568a | 159 | perror (aout_name); |
252b5132 RH |
160 | done (1); |
161 | } | |
162 | ||
163 | if (!bfd_check_format (core_bfd, bfd_object)) | |
164 | { | |
11010f5a | 165 | fprintf (stderr, _("%s: %s: not in executable format\n"), whoami, aout_name); |
252b5132 RH |
166 | done (1); |
167 | } | |
168 | ||
ef368dac | 169 | /* Get core's text section. */ |
252b5132 RH |
170 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
171 | if (!core_text_sect) | |
172 | { | |
173 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
174 | if (!core_text_sect) | |
175 | { | |
176 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
1355568a | 177 | whoami, aout_name); |
252b5132 RH |
178 | done (1); |
179 | } | |
180 | } | |
181 | ||
ef368dac | 182 | /* Read core's symbol table. */ |
252b5132 | 183 | |
ef368dac | 184 | /* This will probably give us more than we need, but that's ok. */ |
37b1bfcd BE |
185 | core_sym_bytes = bfd_get_symtab_upper_bound (core_bfd); |
186 | if (core_sym_bytes < 0) | |
252b5132 | 187 | { |
1355568a | 188 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
189 | bfd_errmsg (bfd_get_error ())); |
190 | done (1); | |
191 | } | |
192 | ||
37b1bfcd | 193 | core_syms = (asymbol **) xmalloc (core_sym_bytes); |
252b5132 | 194 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); |
0eee5820 | 195 | |
252b5132 RH |
196 | if (core_num_syms < 0) |
197 | { | |
1355568a | 198 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
199 | bfd_errmsg (bfd_get_error ())); |
200 | done (1); | |
201 | } | |
202 | ||
2f041bf7 AM |
203 | synth_count = bfd_get_synthetic_symtab (core_bfd, core_num_syms, core_syms, |
204 | 0, NULL, &synthsyms); | |
205 | if (synth_count > 0) | |
206 | { | |
207 | asymbol **symp; | |
208 | long new_size; | |
209 | long i; | |
210 | ||
211 | new_size = (core_num_syms + synth_count + 1) * sizeof (*core_syms); | |
212 | core_syms = xrealloc (core_syms, new_size); | |
213 | symp = core_syms + core_num_syms; | |
214 | core_num_syms += synth_count; | |
215 | for (i = 0; i < synth_count; i++) | |
216 | *symp++ = synthsyms + i; | |
217 | *symp = 0; | |
218 | } | |
219 | ||
252b5132 RH |
220 | min_insn_size = 1; |
221 | offset_to_code = 0; | |
222 | ||
223 | switch (bfd_get_arch (core_bfd)) | |
224 | { | |
225 | case bfd_arch_vax: | |
226 | case bfd_arch_tahoe: | |
227 | offset_to_code = 2; | |
228 | break; | |
229 | ||
230 | case bfd_arch_alpha: | |
231 | min_insn_size = 4; | |
232 | break; | |
233 | ||
234 | default: | |
235 | break; | |
236 | } | |
237 | ||
238 | if (function_mapping_file) | |
239 | read_function_mappings (function_mapping_file); | |
240 | } | |
241 | ||
ef368dac | 242 | /* Read in the text space of an a.out file. */ |
252b5132 | 243 | |
252b5132 | 244 | void |
3e8f6abf | 245 | core_get_text_space (bfd *cbfd) |
252b5132 | 246 | { |
67cf9bc5 | 247 | core_text_space = malloc (bfd_get_section_size (core_text_sect)); |
252b5132 RH |
248 | |
249 | if (!core_text_space) | |
250 | { | |
fdcf7d43 | 251 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
67cf9bc5 | 252 | whoami, (unsigned long) bfd_get_section_size (core_text_sect)); |
252b5132 RH |
253 | done (1); |
254 | } | |
0eee5820 | 255 | |
1355568a | 256 | if (!bfd_get_section_contents (cbfd, core_text_sect, core_text_space, |
67cf9bc5 | 257 | 0, bfd_get_section_size (core_text_sect))) |
252b5132 RH |
258 | { |
259 | bfd_perror ("bfd_get_section_contents"); | |
260 | free (core_text_space); | |
261 | core_text_space = 0; | |
262 | } | |
0eee5820 | 263 | |
252b5132 | 264 | if (!core_text_space) |
ef368dac | 265 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
266 | } |
267 | ||
268 | ||
269 | void | |
3e8f6abf | 270 | find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
252b5132 RH |
271 | { |
272 | switch (bfd_get_arch (core_bfd)) | |
273 | { | |
274 | case bfd_arch_i386: | |
275 | i386_find_call (parent, p_lowpc, p_highpc); | |
276 | break; | |
277 | ||
278 | case bfd_arch_alpha: | |
279 | alpha_find_call (parent, p_lowpc, p_highpc); | |
280 | break; | |
281 | ||
282 | case bfd_arch_vax: | |
283 | vax_find_call (parent, p_lowpc, p_highpc); | |
284 | break; | |
285 | ||
286 | case bfd_arch_sparc: | |
287 | sparc_find_call (parent, p_lowpc, p_highpc); | |
288 | break; | |
289 | ||
290 | case bfd_arch_tahoe: | |
291 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
292 | break; | |
293 | ||
ec0806ec JT |
294 | case bfd_arch_mips: |
295 | mips_find_call (parent, p_lowpc, p_highpc); | |
296 | break; | |
297 | ||
252b5132 RH |
298 | default: |
299 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
300 | whoami, bfd_printable_name(core_bfd)); | |
301 | ||
302 | /* Don't give the error more than once. */ | |
b34976b6 | 303 | ignore_direct_calls = FALSE; |
252b5132 RH |
304 | } |
305 | } | |
306 | ||
ef368dac | 307 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
308 | 0 -> symbol is not interesting to us |
309 | 'T' -> symbol is a global name | |
310 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 311 | |
252b5132 | 312 | static int |
3e8f6abf | 313 | core_sym_class (asymbol *sym) |
252b5132 RH |
314 | { |
315 | symbol_info syminfo; | |
316 | const char *name; | |
317 | char sym_prefix; | |
318 | int i; | |
319 | ||
320 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 321 | return 0; |
252b5132 | 322 | |
ef368dac NC |
323 | /* Must be a text symbol, and static text symbols |
324 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
325 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
326 | { | |
327 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
328 | sym->name)); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
333 | i = syminfo.type; | |
334 | ||
335 | if (i == 'T') | |
ef368dac | 336 | return i; /* It's a global symbol. */ |
252b5132 RH |
337 | |
338 | if (i == 'W') | |
ef368dac NC |
339 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
340 | also be a data symbol. */ | |
341 | return 'T'; | |
252b5132 RH |
342 | |
343 | if (i != 't') | |
344 | { | |
ef368dac | 345 | /* Not a static text symbol. */ |
252b5132 RH |
346 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
347 | sym->name, i)); | |
348 | return 0; | |
349 | } | |
350 | ||
ef368dac | 351 | /* Do some more filtering on static function-names. */ |
252b5132 | 352 | if (ignore_static_funcs) |
ef368dac NC |
353 | return 0; |
354 | ||
355 | /* Can't zero-length name or funny characters in name, where | |
356 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 357 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 358 | return 0; |
252b5132 RH |
359 | |
360 | for (name = sym->name; *name; ++name) | |
361 | { | |
362 | if (*name == '.' || *name == '$') | |
ef368dac NC |
363 | return 0; |
364 | } | |
0eee5820 | 365 | |
ef368dac NC |
366 | /* On systems where the C compiler adds an underscore to all |
367 | names, static names without underscores seem usually to be | |
368 | labels in hand written assembler in the library. We don't want | |
369 | these names. This is certainly necessary on a Sparc running | |
370 | SunOS 4.1 (try profiling a program that does a lot of | |
371 | division). I don't know whether it has harmful side effects on | |
372 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 373 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 374 | |
252b5132 | 375 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 376 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 377 | language. We want to ignore these, since sometimes they mask |
ef368dac | 378 | the real function. (dj@ctron) */ |
252b5132 RH |
379 | || !strncmp (sym->name, "__gnu_compiled", 14) |
380 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
381 | { | |
382 | return 0; | |
383 | } | |
384 | ||
ef368dac NC |
385 | /* If the object file supports marking of function symbols, then |
386 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
387 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
388 | return 0; | |
389 | ||
ef368dac | 390 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
391 | } |
392 | ||
ef368dac | 393 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 394 | |
b34976b6 | 395 | static bfd_boolean |
3e8f6abf | 396 | get_src_info (bfd_vma addr, const char **filename, const char **name, int *line_num) |
252b5132 RH |
397 | { |
398 | const char *fname = 0, *func_name = 0; | |
399 | int l = 0; | |
400 | ||
401 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
402 | addr - core_text_sect->vma, | |
403 | &fname, &func_name, (unsigned int *) &l) | |
404 | && fname && func_name && l) | |
405 | { | |
406 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 407 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
408 | *filename = fname; |
409 | *name = func_name; | |
410 | *line_num = l; | |
b34976b6 | 411 | return TRUE; |
252b5132 RH |
412 | } |
413 | else | |
414 | { | |
415 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
416 | (long) addr, fname ? fname : "<unknown>", l, | |
417 | func_name ? func_name : "<unknown>")); | |
b34976b6 | 418 | return FALSE; |
252b5132 RH |
419 | } |
420 | } | |
421 | ||
ef368dac NC |
422 | /* Read in symbol table from core. |
423 | One symbol per function is entered. */ | |
252b5132 | 424 | |
252b5132 | 425 | void |
37b1bfcd | 426 | core_create_function_syms () |
252b5132 | 427 | { |
1355568a AM |
428 | bfd_vma min_vma = ~(bfd_vma) 0; |
429 | bfd_vma max_vma = 0; | |
252b5132 RH |
430 | int class; |
431 | long i, found, skip; | |
432 | unsigned int j; | |
433 | ||
ef368dac | 434 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 435 | symtab.len = 0; |
0eee5820 | 436 | |
252b5132 RH |
437 | for (i = 0; i < core_num_syms; ++i) |
438 | { | |
439 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 440 | continue; |
252b5132 RH |
441 | |
442 | /* This should be replaced with a binary search or hashed | |
0eee5820 | 443 | search. Gross. |
252b5132 RH |
444 | |
445 | Don't create a symtab entry for a function that has | |
446 | a mapping to a file, unless it's the first function | |
447 | in the file. */ | |
448 | skip = 0; | |
449 | for (j = 0; j < symbol_map_count; j++) | |
450 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
451 | { | |
452 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 453 | symbol_map [j - 1].file_name)) |
252b5132 RH |
454 | skip = 1; |
455 | break; | |
456 | } | |
0eee5820 | 457 | |
252b5132 | 458 | if (!skip) |
0eee5820 | 459 | ++symtab.len; |
252b5132 RH |
460 | } |
461 | ||
462 | if (symtab.len == 0) | |
463 | { | |
464 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
465 | done (1); | |
466 | } | |
467 | ||
ef368dac | 468 | /* The "+ 2" is for the sentinels. */ |
252b5132 RH |
469 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); |
470 | ||
ef368dac | 471 | /* Pass 2 - create symbols. */ |
252b5132 | 472 | symtab.limit = symtab.base; |
0eee5820 | 473 | |
252b5132 RH |
474 | for (i = 0; i < core_num_syms; ++i) |
475 | { | |
c3fcc31e AM |
476 | asection *sym_sec; |
477 | ||
252b5132 | 478 | class = core_sym_class (core_syms[i]); |
0eee5820 | 479 | |
252b5132 RH |
480 | if (!class) |
481 | { | |
482 | DBG (AOUTDEBUG, | |
483 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
484 | (unsigned long) core_syms[i]->value, |
485 | core_syms[i]->name)); | |
252b5132 RH |
486 | continue; |
487 | } | |
0eee5820 | 488 | |
252b5132 RH |
489 | /* This should be replaced with a binary search or hashed |
490 | search. Gross. */ | |
252b5132 RH |
491 | skip = 0; |
492 | found = 0; | |
0eee5820 | 493 | |
252b5132 RH |
494 | for (j = 0; j < symbol_map_count; j++) |
495 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
496 | { | |
497 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 498 | symbol_map [j - 1].file_name)) |
252b5132 RH |
499 | skip = 1; |
500 | else | |
501 | found = j; | |
502 | break; | |
503 | } | |
504 | ||
505 | if (skip) | |
506 | continue; | |
507 | ||
508 | sym_init (symtab.limit); | |
509 | ||
ef368dac | 510 | /* Symbol offsets are always section-relative. */ |
c3fcc31e AM |
511 | sym_sec = core_syms[i]->section; |
512 | symtab.limit->addr = core_syms[i]->value; | |
513 | if (sym_sec) | |
514 | symtab.limit->addr += bfd_get_section_vma (sym_sec->owner, sym_sec); | |
0eee5820 | 515 | |
252b5132 RH |
516 | if (symbol_map_count |
517 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) | |
518 | { | |
519 | symtab.limit->name = symbol_map[found].file_name; | |
520 | symtab.limit->mapped = 1; | |
521 | } | |
522 | else | |
523 | { | |
524 | symtab.limit->name = core_syms[i]->name; | |
525 | symtab.limit->mapped = 0; | |
526 | } | |
527 | ||
ef368dac | 528 | /* Lookup filename and line number, if we can. */ |
252b5132 RH |
529 | { |
530 | const char *filename, *func_name; | |
0eee5820 | 531 | |
252b5132 RH |
532 | if (get_src_info (symtab.limit->addr, &filename, &func_name, |
533 | &symtab.limit->line_num)) | |
534 | { | |
535 | symtab.limit->file = source_file_lookup_path (filename); | |
536 | ||
537 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 538 | gprof. */ |
252b5132 | 539 | #ifdef __osf__ |
ef368dac NC |
540 | /* Suppress symbols that are not function names. This is |
541 | useful to suppress code-labels and aliases. | |
0eee5820 | 542 | |
ef368dac NC |
543 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
544 | labels do not appear in the symbol table info, so this isn't | |
545 | necessary. */ | |
252b5132 RH |
546 | |
547 | if (strcmp (symtab.limit->name, func_name) != 0) | |
548 | { | |
ef368dac NC |
549 | /* The symbol's address maps to a different name, so |
550 | it can't be a function-entry point. This happens | |
551 | for labels, for example. */ | |
252b5132 RH |
552 | DBG (AOUTDEBUG, |
553 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
554 | symtab.limit->name, func_name)); | |
555 | continue; | |
556 | } | |
557 | #endif | |
558 | } | |
559 | } | |
560 | ||
b34976b6 AM |
561 | symtab.limit->is_func = TRUE; |
562 | symtab.limit->is_bb_head = TRUE; | |
0eee5820 | 563 | |
252b5132 | 564 | if (class == 't') |
b34976b6 | 565 | symtab.limit->is_static = TRUE; |
252b5132 | 566 | |
8e1a114b DB |
567 | /* Keep track of the minimum and maximum vma addresses used by all |
568 | symbols. When computing the max_vma, use the ending address of the | |
569 | section containing the symbol, if available. */ | |
252b5132 | 570 | min_vma = MIN (symtab.limit->addr, min_vma); |
c3fcc31e AM |
571 | if (sym_sec) |
572 | max_vma = MAX (bfd_get_section_vma (sym_sec->owner, sym_sec) | |
573 | + bfd_section_size (sym_sec->owner, sym_sec) - 1, | |
574 | max_vma); | |
8e1a114b DB |
575 | else |
576 | max_vma = MAX (symtab.limit->addr, max_vma); | |
252b5132 | 577 | |
ef368dac | 578 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 579 | are *not* prefixed by '_'. */ |
252b5132 RH |
580 | if (symtab.limit->name[0] == 'm' && discard_underscores |
581 | && strcmp (symtab.limit->name, "main") == 0) | |
ef368dac | 582 | discard_underscores = 0; |
252b5132 RH |
583 | |
584 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", | |
585 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
586 | symtab.limit->name, |
587 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
588 | ++symtab.limit; |
589 | } | |
590 | ||
ef368dac | 591 | /* Create sentinels. */ |
252b5132 RH |
592 | sym_init (symtab.limit); |
593 | symtab.limit->name = "<locore>"; | |
594 | symtab.limit->addr = 0; | |
595 | symtab.limit->end_addr = min_vma - 1; | |
596 | ++symtab.limit; | |
597 | ||
598 | sym_init (symtab.limit); | |
599 | symtab.limit->name = "<hicore>"; | |
600 | symtab.limit->addr = max_vma + 1; | |
1355568a | 601 | symtab.limit->end_addr = ~(bfd_vma) 0; |
252b5132 RH |
602 | ++symtab.limit; |
603 | ||
604 | symtab.len = symtab.limit - symtab.base; | |
605 | symtab_finalize (&symtab); | |
606 | } | |
607 | ||
ef368dac NC |
608 | /* Read in symbol table from core. |
609 | One symbol per line of source code is entered. */ | |
252b5132 | 610 | |
252b5132 | 611 | void |
37b1bfcd | 612 | core_create_line_syms () |
252b5132 RH |
613 | { |
614 | char *prev_name, *prev_filename; | |
1355568a AM |
615 | unsigned int prev_name_len, prev_filename_len; |
616 | bfd_vma vma, min_vma = ~(bfd_vma) 0, max_vma = 0; | |
252b5132 RH |
617 | Sym *prev, dummy, *sentinel, *sym; |
618 | const char *filename; | |
619 | int prev_line_num; | |
620 | Sym_Table ltab; | |
bb02f434 | 621 | bfd_vma vma_high; |
0eee5820 | 622 | |
ef368dac NC |
623 | /* Create symbols for functions as usual. This is necessary in |
624 | cases where parts of a program were not compiled with -g. For | |
625 | those parts we still want to get info at the function level. */ | |
37b1bfcd | 626 | core_create_function_syms (); |
252b5132 | 627 | |
37b1bfcd | 628 | /* Pass 1: count the number of symbols. */ |
ef368dac NC |
629 | |
630 | /* To find all line information, walk through all possible | |
631 | text-space addresses (one by one!) and get the debugging | |
632 | info for each address. When the debugging info changes, | |
633 | it is time to create a new symbol. | |
0eee5820 | 634 | |
ef368dac | 635 | Of course, this is rather slow and it would be better if |
37b1bfcd | 636 | BFD would provide an iterator for enumerating all line infos. */ |
252b5132 RH |
637 | prev_name_len = PATH_MAX; |
638 | prev_filename_len = PATH_MAX; | |
639 | prev_name = xmalloc (prev_name_len); | |
640 | prev_filename = xmalloc (prev_filename_len); | |
641 | ltab.len = 0; | |
642 | prev_line_num = 0; | |
0eee5820 | 643 | |
67cf9bc5 | 644 | vma_high = core_text_sect->vma + bfd_get_section_size (core_text_sect); |
37b1bfcd | 645 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 | 646 | { |
1355568a | 647 | unsigned int len; |
252b5132 | 648 | |
252b5132 RH |
649 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
650 | || (prev_line_num == dummy.line_num | |
651 | && prev_name != NULL | |
652 | && strcmp (prev_name, dummy.name) == 0 | |
653 | && strcmp (prev_filename, filename) == 0)) | |
ef368dac | 654 | continue; |
252b5132 RH |
655 | |
656 | ++ltab.len; | |
657 | prev_line_num = dummy.line_num; | |
658 | ||
659 | len = strlen (dummy.name); | |
660 | if (len >= prev_name_len) | |
661 | { | |
662 | prev_name_len = len + 1024; | |
663 | free (prev_name); | |
664 | prev_name = xmalloc (prev_name_len); | |
665 | } | |
0eee5820 | 666 | |
252b5132 | 667 | strcpy (prev_name, dummy.name); |
252b5132 | 668 | len = strlen (filename); |
0eee5820 | 669 | |
252b5132 RH |
670 | if (len >= prev_filename_len) |
671 | { | |
672 | prev_filename_len = len + 1024; | |
673 | free (prev_filename); | |
674 | prev_filename = xmalloc (prev_filename_len); | |
675 | } | |
0eee5820 | 676 | |
252b5132 RH |
677 | strcpy (prev_filename, filename); |
678 | ||
679 | min_vma = MIN (vma, min_vma); | |
680 | max_vma = MAX (vma, max_vma); | |
681 | } | |
682 | ||
683 | free (prev_name); | |
684 | free (prev_filename); | |
685 | ||
ef368dac | 686 | /* Make room for function symbols, too. */ |
252b5132 RH |
687 | ltab.len += symtab.len; |
688 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
689 | ltab.limit = ltab.base; | |
690 | ||
ef368dac | 691 | /* Pass 2 - create symbols. */ |
252b5132 RH |
692 | |
693 | /* We now set is_static as we go along, rather than by running | |
694 | through the symbol table at the end. | |
695 | ||
696 | The old way called symtab_finalize before the is_static pass, | |
697 | causing a problem since symtab_finalize uses is_static as part of | |
698 | its address conflict resolution algorithm. Since global symbols | |
699 | were prefered over static symbols, and all line symbols were | |
700 | global at that point, static function names that conflicted with | |
701 | their own line numbers (static, but labeled as global) were | |
702 | rejected in favor of the line num. | |
703 | ||
704 | This was not the desired functionality. We always want to keep | |
705 | our function symbols and discard any conflicting line symbols. | |
706 | Perhaps symtab_finalize should be modified to make this | |
707 | distinction as well, but the current fix works and the code is a | |
708 | lot cleaner now. */ | |
252b5132 | 709 | prev = 0; |
0eee5820 | 710 | |
37b1bfcd | 711 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 RH |
712 | { |
713 | sym_init (ltab.limit); | |
0eee5820 | 714 | |
37b1bfcd | 715 | if (!get_src_info (vma, &filename, <ab.limit->name, <ab.limit->line_num) |
252b5132 RH |
716 | || (prev && prev->line_num == ltab.limit->line_num |
717 | && strcmp (prev->name, ltab.limit->name) == 0 | |
718 | && strcmp (prev->file->name, filename) == 0)) | |
ef368dac | 719 | continue; |
252b5132 | 720 | |
ef368dac | 721 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
722 | ltab.limit->name = xstrdup (ltab.limit->name); |
723 | ltab.limit->file = source_file_lookup_path (filename); | |
724 | ||
37b1bfcd | 725 | ltab.limit->addr = vma; |
252b5132 RH |
726 | |
727 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
728 | 1) the previous symbol, if it's from the same function, or |
729 | 2) a symtab lookup. */ | |
252b5132 RH |
730 | if (prev && ltab.limit->file == prev->file && |
731 | strcmp (ltab.limit->name, prev->name) == 0) | |
732 | { | |
733 | ltab.limit->is_static = prev->is_static; | |
734 | } | |
735 | else | |
736 | { | |
737 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
738 | ltab.limit->is_static = sym->is_static; | |
739 | } | |
740 | ||
741 | prev = ltab.limit; | |
742 | ||
ef368dac | 743 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 744 | are *not* prefixed by '_'. */ |
252b5132 RH |
745 | if (ltab.limit->name[0] == 'm' && discard_underscores |
746 | && strcmp (ltab.limit->name, "main") == 0) | |
ef368dac | 747 | discard_underscores = 0; |
252b5132 | 748 | |
4a607dcc ILT |
749 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
750 | (unsigned long) (ltab.limit - ltab.base), | |
751 | ltab.limit->name, | |
fdcf7d43 | 752 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
753 | ++ltab.limit; |
754 | } | |
755 | ||
ef368dac | 756 | /* Update sentinels. */ |
1355568a | 757 | sentinel = sym_lookup (&symtab, (bfd_vma) 0); |
0eee5820 | 758 | |
88793399 NC |
759 | if (sentinel |
760 | && strcmp (sentinel->name, "<locore>") == 0 | |
252b5132 | 761 | && min_vma <= sentinel->end_addr) |
ef368dac | 762 | sentinel->end_addr = min_vma - 1; |
252b5132 | 763 | |
1355568a | 764 | sentinel = sym_lookup (&symtab, ~(bfd_vma) 0); |
0eee5820 | 765 | |
88793399 NC |
766 | if (sentinel |
767 | && strcmp (sentinel->name, "<hicore>") == 0 | |
768 | && max_vma >= sentinel->addr) | |
ef368dac | 769 | sentinel->addr = max_vma + 1; |
252b5132 | 770 | |
ef368dac | 771 | /* Copy in function symbols. */ |
252b5132 RH |
772 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
773 | ltab.limit += symtab.len; | |
774 | ||
775 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
776 | { | |
777 | fprintf (stderr, | |
778 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
779 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
780 | done (1); | |
781 | } | |
782 | ||
ef368dac | 783 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
784 | symtab_finalize (<ab); |
785 | free (symtab.base); | |
786 | symtab = ltab; | |
252b5132 | 787 | } |