Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
88793399 | 3 | Copyright 2000, 2001, 2002, 2003 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 | |
9 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | \f | |
252b5132 RH |
22 | #include "libiberty.h" |
23 | #include "gprof.h" | |
6d9c411a AM |
24 | #include "search_list.h" |
25 | #include "source.h" | |
252b5132 | 26 | #include "symtab.h" |
6d9c411a | 27 | #include "corefile.h" |
252b5132 RH |
28 | |
29 | bfd *core_bfd; | |
30 | int core_num_syms; | |
31 | asymbol **core_syms; | |
32 | asection *core_text_sect; | |
33 | PTR core_text_space; | |
34 | ||
35 | int min_insn_size; | |
36 | int offset_to_code; | |
37 | ||
38 | /* For mapping symbols to specific .o files during file ordering. */ | |
252b5132 RH |
39 | struct function_map *symbol_map; |
40 | unsigned int symbol_map_count; | |
41 | ||
1355568a AM |
42 | static void read_function_mappings PARAMS ((const char *)); |
43 | static int core_sym_class PARAMS ((asymbol *)); | |
b34976b6 | 44 | static bfd_boolean get_src_info |
1355568a AM |
45 | PARAMS ((bfd_vma, const char **, const char **, int *)); |
46 | ||
ef368dac | 47 | extern void i386_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
252b5132 | 48 | extern void alpha_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
ef368dac | 49 | extern void vax_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
252b5132 RH |
50 | extern void tahoe_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
51 | extern void sparc_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); | |
ec0806ec | 52 | extern void mips_find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); |
252b5132 RH |
53 | |
54 | static void | |
1355568a AM |
55 | read_function_mappings (filename) |
56 | const char *filename; | |
252b5132 RH |
57 | { |
58 | FILE *file = fopen (filename, "r"); | |
59 | char dummy[1024]; | |
60 | int count = 0; | |
61 | ||
62 | if (!file) | |
63 | { | |
64 | fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename); | |
65 | done (1); | |
66 | } | |
67 | ||
68 | /* First parse the mapping file so we know how big we need to | |
69 | make our tables. We also do some sanity checks at this | |
70 | time. */ | |
71 | while (!feof (file)) | |
72 | { | |
73 | int matches; | |
74 | ||
75 | matches = fscanf (file, "%[^\n:]", dummy); | |
76 | if (!matches) | |
77 | { | |
78 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), | |
79 | whoami, filename); | |
80 | done (1); | |
81 | } | |
82 | ||
83 | /* Just skip messages about files with no symbols. */ | |
84 | if (!strncmp (dummy, "No symbols in ", 14)) | |
85 | { | |
86 | fscanf (file, "\n"); | |
87 | continue; | |
88 | } | |
89 | ||
90 | /* Don't care what else is on this line at this point. */ | |
91 | fscanf (file, "%[^\n]\n", dummy); | |
92 | count++; | |
93 | } | |
94 | ||
95 | /* Now we know how big we need to make our table. */ | |
96 | symbol_map = ((struct function_map *) | |
97 | xmalloc (count * sizeof (struct function_map))); | |
98 | ||
99 | /* Rewind the input file so we can read it again. */ | |
100 | rewind (file); | |
101 | ||
102 | /* Read each entry and put it into the table. */ | |
103 | count = 0; | |
104 | while (!feof (file)) | |
105 | { | |
106 | int matches; | |
107 | char *tmp; | |
108 | ||
109 | matches = fscanf (file, "%[^\n:]", dummy); | |
110 | if (!matches) | |
111 | { | |
112 | fprintf (stderr, _("%s: unable to parse mapping file %s.\n"), | |
113 | whoami, filename); | |
114 | done (1); | |
115 | } | |
116 | ||
117 | /* Just skip messages about files with no symbols. */ | |
118 | if (!strncmp (dummy, "No symbols in ", 14)) | |
119 | { | |
120 | fscanf (file, "\n"); | |
121 | continue; | |
122 | } | |
123 | ||
124 | /* dummy has the filename, go ahead and copy it. */ | |
125 | symbol_map[count].file_name = xmalloc (strlen (dummy) + 1); | |
126 | strcpy (symbol_map[count].file_name, dummy); | |
127 | ||
128 | /* Now we need the function name. */ | |
129 | fscanf (file, "%[^\n]\n", dummy); | |
130 | tmp = strrchr (dummy, ' ') + 1; | |
131 | symbol_map[count].function_name = xmalloc (strlen (tmp) + 1); | |
132 | strcpy (symbol_map[count].function_name, tmp); | |
133 | count++; | |
134 | } | |
135 | ||
136 | /* Record the size of the map table for future reference. */ | |
137 | symbol_map_count = count; | |
138 | } | |
139 | ||
ef368dac | 140 | |
252b5132 | 141 | void |
1355568a AM |
142 | core_init (aout_name) |
143 | const char *aout_name; | |
252b5132 | 144 | { |
1355568a | 145 | core_bfd = bfd_openr (aout_name, 0); |
252b5132 RH |
146 | |
147 | if (!core_bfd) | |
148 | { | |
1355568a | 149 | perror (aout_name); |
252b5132 RH |
150 | done (1); |
151 | } | |
152 | ||
153 | if (!bfd_check_format (core_bfd, bfd_object)) | |
154 | { | |
1355568a | 155 | fprintf (stderr, _("%s: %s: not in a.out format\n"), whoami, aout_name); |
252b5132 RH |
156 | done (1); |
157 | } | |
158 | ||
ef368dac | 159 | /* Get core's text section. */ |
252b5132 RH |
160 | core_text_sect = bfd_get_section_by_name (core_bfd, ".text"); |
161 | if (!core_text_sect) | |
162 | { | |
163 | core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$"); | |
164 | if (!core_text_sect) | |
165 | { | |
166 | fprintf (stderr, _("%s: can't find .text section in %s\n"), | |
1355568a | 167 | whoami, aout_name); |
252b5132 RH |
168 | done (1); |
169 | } | |
170 | } | |
171 | ||
ef368dac | 172 | /* Read core's symbol table. */ |
252b5132 | 173 | |
ef368dac | 174 | /* This will probably give us more than we need, but that's ok. */ |
252b5132 RH |
175 | core_num_syms = bfd_get_symtab_upper_bound (core_bfd); |
176 | if (core_num_syms < 0) | |
177 | { | |
1355568a | 178 | fprintf (stderr, "%s: %s: %s\n", whoami, aout_name, |
252b5132 RH |
179 | bfd_errmsg (bfd_get_error ())); |
180 | done (1); | |
181 | } | |
182 | ||
183 | core_syms = (asymbol **) xmalloc (core_num_syms); | |
184 | core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms); | |
0eee5820 | 185 | |
252b5132 RH |
186 | if (core_num_syms < 0) |
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 | ||
193 | min_insn_size = 1; | |
194 | offset_to_code = 0; | |
195 | ||
196 | switch (bfd_get_arch (core_bfd)) | |
197 | { | |
198 | case bfd_arch_vax: | |
199 | case bfd_arch_tahoe: | |
200 | offset_to_code = 2; | |
201 | break; | |
202 | ||
203 | case bfd_arch_alpha: | |
204 | min_insn_size = 4; | |
205 | break; | |
206 | ||
207 | default: | |
208 | break; | |
209 | } | |
210 | ||
211 | if (function_mapping_file) | |
212 | read_function_mappings (function_mapping_file); | |
213 | } | |
214 | ||
ef368dac | 215 | /* Read in the text space of an a.out file. */ |
252b5132 | 216 | |
252b5132 | 217 | void |
1355568a AM |
218 | core_get_text_space (cbfd) |
219 | bfd *cbfd; | |
252b5132 | 220 | { |
1355568a | 221 | core_text_space = (PTR) malloc ((unsigned int) core_text_sect->_raw_size); |
252b5132 RH |
222 | |
223 | if (!core_text_space) | |
224 | { | |
fdcf7d43 ILT |
225 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
226 | whoami, (unsigned long) core_text_sect->_raw_size); | |
252b5132 RH |
227 | done (1); |
228 | } | |
0eee5820 | 229 | |
1355568a AM |
230 | if (!bfd_get_section_contents (cbfd, core_text_sect, core_text_space, |
231 | (bfd_vma) 0, core_text_sect->_raw_size)) | |
252b5132 RH |
232 | { |
233 | bfd_perror ("bfd_get_section_contents"); | |
234 | free (core_text_space); | |
235 | core_text_space = 0; | |
236 | } | |
0eee5820 | 237 | |
252b5132 | 238 | if (!core_text_space) |
ef368dac | 239 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
240 | } |
241 | ||
242 | ||
243 | void | |
1355568a AM |
244 | find_call (parent, p_lowpc, p_highpc) |
245 | Sym *parent; | |
246 | bfd_vma p_lowpc; | |
247 | bfd_vma p_highpc; | |
252b5132 RH |
248 | { |
249 | switch (bfd_get_arch (core_bfd)) | |
250 | { | |
251 | case bfd_arch_i386: | |
252 | i386_find_call (parent, p_lowpc, p_highpc); | |
253 | break; | |
254 | ||
255 | case bfd_arch_alpha: | |
256 | alpha_find_call (parent, p_lowpc, p_highpc); | |
257 | break; | |
258 | ||
259 | case bfd_arch_vax: | |
260 | vax_find_call (parent, p_lowpc, p_highpc); | |
261 | break; | |
262 | ||
263 | case bfd_arch_sparc: | |
264 | sparc_find_call (parent, p_lowpc, p_highpc); | |
265 | break; | |
266 | ||
267 | case bfd_arch_tahoe: | |
268 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
269 | break; | |
270 | ||
ec0806ec JT |
271 | case bfd_arch_mips: |
272 | mips_find_call (parent, p_lowpc, p_highpc); | |
273 | break; | |
274 | ||
252b5132 RH |
275 | default: |
276 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
277 | whoami, bfd_printable_name(core_bfd)); | |
278 | ||
279 | /* Don't give the error more than once. */ | |
b34976b6 | 280 | ignore_direct_calls = FALSE; |
252b5132 RH |
281 | } |
282 | } | |
283 | ||
ef368dac | 284 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
285 | 0 -> symbol is not interesting to us |
286 | 'T' -> symbol is a global name | |
287 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 288 | |
252b5132 | 289 | static int |
1355568a AM |
290 | core_sym_class (sym) |
291 | asymbol *sym; | |
252b5132 RH |
292 | { |
293 | symbol_info syminfo; | |
294 | const char *name; | |
295 | char sym_prefix; | |
296 | int i; | |
297 | ||
298 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 299 | return 0; |
252b5132 | 300 | |
ef368dac NC |
301 | /* Must be a text symbol, and static text symbols |
302 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
303 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
304 | { | |
305 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
306 | sym->name)); | |
307 | return 0; | |
308 | } | |
309 | ||
310 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
311 | i = syminfo.type; | |
312 | ||
313 | if (i == 'T') | |
ef368dac | 314 | return i; /* It's a global symbol. */ |
252b5132 RH |
315 | |
316 | if (i == 'W') | |
ef368dac NC |
317 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
318 | also be a data symbol. */ | |
319 | return 'T'; | |
252b5132 RH |
320 | |
321 | if (i != 't') | |
322 | { | |
ef368dac | 323 | /* Not a static text symbol. */ |
252b5132 RH |
324 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
325 | sym->name, i)); | |
326 | return 0; | |
327 | } | |
328 | ||
ef368dac | 329 | /* Do some more filtering on static function-names. */ |
252b5132 | 330 | if (ignore_static_funcs) |
ef368dac NC |
331 | return 0; |
332 | ||
333 | /* Can't zero-length name or funny characters in name, where | |
334 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 335 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 336 | return 0; |
252b5132 RH |
337 | |
338 | for (name = sym->name; *name; ++name) | |
339 | { | |
340 | if (*name == '.' || *name == '$') | |
ef368dac NC |
341 | return 0; |
342 | } | |
0eee5820 | 343 | |
ef368dac NC |
344 | /* On systems where the C compiler adds an underscore to all |
345 | names, static names without underscores seem usually to be | |
346 | labels in hand written assembler in the library. We don't want | |
347 | these names. This is certainly necessary on a Sparc running | |
348 | SunOS 4.1 (try profiling a program that does a lot of | |
349 | division). I don't know whether it has harmful side effects on | |
350 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 351 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 352 | |
252b5132 | 353 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 354 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 355 | language. We want to ignore these, since sometimes they mask |
ef368dac | 356 | the real function. (dj@ctron) */ |
252b5132 RH |
357 | || !strncmp (sym->name, "__gnu_compiled", 14) |
358 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
359 | { | |
360 | return 0; | |
361 | } | |
362 | ||
ef368dac NC |
363 | /* If the object file supports marking of function symbols, then |
364 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
365 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
366 | return 0; | |
367 | ||
ef368dac | 368 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
369 | } |
370 | ||
ef368dac | 371 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 372 | |
b34976b6 | 373 | static bfd_boolean |
1355568a AM |
374 | get_src_info (addr, filename, name, line_num) |
375 | bfd_vma addr; | |
376 | const char **filename; | |
377 | const char **name; | |
378 | int *line_num; | |
252b5132 RH |
379 | { |
380 | const char *fname = 0, *func_name = 0; | |
381 | int l = 0; | |
382 | ||
383 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
384 | addr - core_text_sect->vma, | |
385 | &fname, &func_name, (unsigned int *) &l) | |
386 | && fname && func_name && l) | |
387 | { | |
388 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 389 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
390 | *filename = fname; |
391 | *name = func_name; | |
392 | *line_num = l; | |
b34976b6 | 393 | return TRUE; |
252b5132 RH |
394 | } |
395 | else | |
396 | { | |
397 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
398 | (long) addr, fname ? fname : "<unknown>", l, | |
399 | func_name ? func_name : "<unknown>")); | |
b34976b6 | 400 | return FALSE; |
252b5132 RH |
401 | } |
402 | } | |
403 | ||
ef368dac NC |
404 | /* Read in symbol table from core. |
405 | One symbol per function is entered. */ | |
252b5132 | 406 | |
252b5132 | 407 | void |
1355568a AM |
408 | core_create_function_syms (cbfd) |
409 | bfd *cbfd ATTRIBUTE_UNUSED; | |
252b5132 | 410 | { |
1355568a AM |
411 | bfd_vma min_vma = ~(bfd_vma) 0; |
412 | bfd_vma max_vma = 0; | |
252b5132 RH |
413 | int class; |
414 | long i, found, skip; | |
415 | unsigned int j; | |
416 | ||
ef368dac | 417 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 418 | symtab.len = 0; |
0eee5820 | 419 | |
252b5132 RH |
420 | for (i = 0; i < core_num_syms; ++i) |
421 | { | |
422 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 423 | continue; |
252b5132 RH |
424 | |
425 | /* This should be replaced with a binary search or hashed | |
0eee5820 | 426 | search. Gross. |
252b5132 RH |
427 | |
428 | Don't create a symtab entry for a function that has | |
429 | a mapping to a file, unless it's the first function | |
430 | in the file. */ | |
431 | skip = 0; | |
432 | for (j = 0; j < symbol_map_count; j++) | |
433 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
434 | { | |
435 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 436 | symbol_map [j - 1].file_name)) |
252b5132 RH |
437 | skip = 1; |
438 | break; | |
439 | } | |
0eee5820 | 440 | |
252b5132 | 441 | if (!skip) |
0eee5820 | 442 | ++symtab.len; |
252b5132 RH |
443 | } |
444 | ||
445 | if (symtab.len == 0) | |
446 | { | |
447 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
448 | done (1); | |
449 | } | |
450 | ||
ef368dac | 451 | /* The "+ 2" is for the sentinels. */ |
252b5132 RH |
452 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); |
453 | ||
ef368dac | 454 | /* Pass 2 - create symbols. */ |
252b5132 | 455 | symtab.limit = symtab.base; |
0eee5820 | 456 | |
252b5132 RH |
457 | for (i = 0; i < core_num_syms; ++i) |
458 | { | |
459 | class = core_sym_class (core_syms[i]); | |
0eee5820 | 460 | |
252b5132 RH |
461 | if (!class) |
462 | { | |
463 | DBG (AOUTDEBUG, | |
464 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
465 | (unsigned long) core_syms[i]->value, |
466 | core_syms[i]->name)); | |
252b5132 RH |
467 | continue; |
468 | } | |
0eee5820 | 469 | |
252b5132 RH |
470 | /* This should be replaced with a binary search or hashed |
471 | search. Gross. */ | |
252b5132 RH |
472 | skip = 0; |
473 | found = 0; | |
0eee5820 | 474 | |
252b5132 RH |
475 | for (j = 0; j < symbol_map_count; j++) |
476 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
477 | { | |
478 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 479 | symbol_map [j - 1].file_name)) |
252b5132 RH |
480 | skip = 1; |
481 | else | |
482 | found = j; | |
483 | break; | |
484 | } | |
485 | ||
486 | if (skip) | |
487 | continue; | |
488 | ||
489 | sym_init (symtab.limit); | |
490 | ||
ef368dac | 491 | /* Symbol offsets are always section-relative. */ |
252b5132 | 492 | symtab.limit->addr = core_syms[i]->value + core_syms[i]->section->vma; |
0eee5820 | 493 | |
252b5132 RH |
494 | if (symbol_map_count |
495 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) | |
496 | { | |
497 | symtab.limit->name = symbol_map[found].file_name; | |
498 | symtab.limit->mapped = 1; | |
499 | } | |
500 | else | |
501 | { | |
502 | symtab.limit->name = core_syms[i]->name; | |
503 | symtab.limit->mapped = 0; | |
504 | } | |
505 | ||
ef368dac | 506 | /* Lookup filename and line number, if we can. */ |
252b5132 RH |
507 | { |
508 | const char *filename, *func_name; | |
0eee5820 | 509 | |
252b5132 RH |
510 | if (get_src_info (symtab.limit->addr, &filename, &func_name, |
511 | &symtab.limit->line_num)) | |
512 | { | |
513 | symtab.limit->file = source_file_lookup_path (filename); | |
514 | ||
515 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 516 | gprof. */ |
252b5132 | 517 | #ifdef __osf__ |
ef368dac NC |
518 | /* Suppress symbols that are not function names. This is |
519 | useful to suppress code-labels and aliases. | |
0eee5820 | 520 | |
ef368dac NC |
521 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
522 | labels do not appear in the symbol table info, so this isn't | |
523 | necessary. */ | |
252b5132 RH |
524 | |
525 | if (strcmp (symtab.limit->name, func_name) != 0) | |
526 | { | |
ef368dac NC |
527 | /* The symbol's address maps to a different name, so |
528 | it can't be a function-entry point. This happens | |
529 | for labels, for example. */ | |
252b5132 RH |
530 | DBG (AOUTDEBUG, |
531 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
532 | symtab.limit->name, func_name)); | |
533 | continue; | |
534 | } | |
535 | #endif | |
536 | } | |
537 | } | |
538 | ||
b34976b6 AM |
539 | symtab.limit->is_func = TRUE; |
540 | symtab.limit->is_bb_head = TRUE; | |
0eee5820 | 541 | |
252b5132 | 542 | if (class == 't') |
b34976b6 | 543 | symtab.limit->is_static = TRUE; |
252b5132 | 544 | |
8e1a114b DB |
545 | /* Keep track of the minimum and maximum vma addresses used by all |
546 | symbols. When computing the max_vma, use the ending address of the | |
547 | section containing the symbol, if available. */ | |
252b5132 | 548 | min_vma = MIN (symtab.limit->addr, min_vma); |
8e1a114b DB |
549 | if (core_syms[i]->section) |
550 | max_vma = MAX (core_syms[i]->section->vma | |
551 | + core_syms[i]->section->_cooked_size - 1, max_vma); | |
552 | else | |
553 | max_vma = MAX (symtab.limit->addr, max_vma); | |
252b5132 | 554 | |
ef368dac | 555 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 556 | are *not* prefixed by '_'. */ |
252b5132 RH |
557 | if (symtab.limit->name[0] == 'm' && discard_underscores |
558 | && strcmp (symtab.limit->name, "main") == 0) | |
ef368dac | 559 | discard_underscores = 0; |
252b5132 RH |
560 | |
561 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", | |
562 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
563 | symtab.limit->name, |
564 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
565 | ++symtab.limit; |
566 | } | |
567 | ||
ef368dac | 568 | /* Create sentinels. */ |
252b5132 RH |
569 | sym_init (symtab.limit); |
570 | symtab.limit->name = "<locore>"; | |
571 | symtab.limit->addr = 0; | |
572 | symtab.limit->end_addr = min_vma - 1; | |
573 | ++symtab.limit; | |
574 | ||
575 | sym_init (symtab.limit); | |
576 | symtab.limit->name = "<hicore>"; | |
577 | symtab.limit->addr = max_vma + 1; | |
1355568a | 578 | symtab.limit->end_addr = ~(bfd_vma) 0; |
252b5132 RH |
579 | ++symtab.limit; |
580 | ||
581 | symtab.len = symtab.limit - symtab.base; | |
582 | symtab_finalize (&symtab); | |
583 | } | |
584 | ||
ef368dac NC |
585 | /* Read in symbol table from core. |
586 | One symbol per line of source code is entered. */ | |
252b5132 | 587 | |
252b5132 | 588 | void |
1355568a AM |
589 | core_create_line_syms (cbfd) |
590 | bfd *cbfd; | |
252b5132 RH |
591 | { |
592 | char *prev_name, *prev_filename; | |
1355568a AM |
593 | unsigned int prev_name_len, prev_filename_len; |
594 | bfd_vma vma, min_vma = ~(bfd_vma) 0, max_vma = 0; | |
252b5132 RH |
595 | bfd_vma offset; |
596 | Sym *prev, dummy, *sentinel, *sym; | |
597 | const char *filename; | |
598 | int prev_line_num; | |
599 | Sym_Table ltab; | |
0eee5820 | 600 | |
ef368dac NC |
601 | /* Create symbols for functions as usual. This is necessary in |
602 | cases where parts of a program were not compiled with -g. For | |
603 | those parts we still want to get info at the function level. */ | |
1355568a | 604 | core_create_function_syms (cbfd); |
252b5132 | 605 | |
ef368dac NC |
606 | /* Pass 1 - counter number of symbols. */ |
607 | ||
608 | /* To find all line information, walk through all possible | |
609 | text-space addresses (one by one!) and get the debugging | |
610 | info for each address. When the debugging info changes, | |
611 | it is time to create a new symbol. | |
0eee5820 | 612 | |
ef368dac NC |
613 | Of course, this is rather slow and it would be better if |
614 | bfd would provide an iterator for enumerating all line infos. */ | |
252b5132 RH |
615 | prev_name_len = PATH_MAX; |
616 | prev_filename_len = PATH_MAX; | |
617 | prev_name = xmalloc (prev_name_len); | |
618 | prev_filename = xmalloc (prev_filename_len); | |
619 | ltab.len = 0; | |
620 | prev_line_num = 0; | |
0eee5820 | 621 | |
252b5132 RH |
622 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) |
623 | { | |
1355568a | 624 | unsigned int len; |
252b5132 RH |
625 | |
626 | vma = core_text_sect->vma + offset; | |
0eee5820 | 627 | |
252b5132 RH |
628 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
629 | || (prev_line_num == dummy.line_num | |
630 | && prev_name != NULL | |
631 | && strcmp (prev_name, dummy.name) == 0 | |
632 | && strcmp (prev_filename, filename) == 0)) | |
ef368dac | 633 | continue; |
252b5132 RH |
634 | |
635 | ++ltab.len; | |
636 | prev_line_num = dummy.line_num; | |
637 | ||
638 | len = strlen (dummy.name); | |
639 | if (len >= prev_name_len) | |
640 | { | |
641 | prev_name_len = len + 1024; | |
642 | free (prev_name); | |
643 | prev_name = xmalloc (prev_name_len); | |
644 | } | |
0eee5820 | 645 | |
252b5132 | 646 | strcpy (prev_name, dummy.name); |
252b5132 | 647 | len = strlen (filename); |
0eee5820 | 648 | |
252b5132 RH |
649 | if (len >= prev_filename_len) |
650 | { | |
651 | prev_filename_len = len + 1024; | |
652 | free (prev_filename); | |
653 | prev_filename = xmalloc (prev_filename_len); | |
654 | } | |
0eee5820 | 655 | |
252b5132 RH |
656 | strcpy (prev_filename, filename); |
657 | ||
658 | min_vma = MIN (vma, min_vma); | |
659 | max_vma = MAX (vma, max_vma); | |
660 | } | |
661 | ||
662 | free (prev_name); | |
663 | free (prev_filename); | |
664 | ||
ef368dac | 665 | /* Make room for function symbols, too. */ |
252b5132 RH |
666 | ltab.len += symtab.len; |
667 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
668 | ltab.limit = ltab.base; | |
669 | ||
ef368dac | 670 | /* Pass 2 - create symbols. */ |
252b5132 RH |
671 | |
672 | /* We now set is_static as we go along, rather than by running | |
673 | through the symbol table at the end. | |
674 | ||
675 | The old way called symtab_finalize before the is_static pass, | |
676 | causing a problem since symtab_finalize uses is_static as part of | |
677 | its address conflict resolution algorithm. Since global symbols | |
678 | were prefered over static symbols, and all line symbols were | |
679 | global at that point, static function names that conflicted with | |
680 | their own line numbers (static, but labeled as global) were | |
681 | rejected in favor of the line num. | |
682 | ||
683 | This was not the desired functionality. We always want to keep | |
684 | our function symbols and discard any conflicting line symbols. | |
685 | Perhaps symtab_finalize should be modified to make this | |
686 | distinction as well, but the current fix works and the code is a | |
687 | lot cleaner now. */ | |
252b5132 | 688 | prev = 0; |
0eee5820 | 689 | |
252b5132 RH |
690 | for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size) |
691 | { | |
692 | sym_init (ltab.limit); | |
0eee5820 | 693 | |
252b5132 RH |
694 | if (!get_src_info (core_text_sect->vma + offset, &filename, |
695 | <ab.limit->name, <ab.limit->line_num) | |
696 | || (prev && prev->line_num == ltab.limit->line_num | |
697 | && strcmp (prev->name, ltab.limit->name) == 0 | |
698 | && strcmp (prev->file->name, filename) == 0)) | |
ef368dac | 699 | continue; |
252b5132 | 700 | |
ef368dac | 701 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
702 | ltab.limit->name = xstrdup (ltab.limit->name); |
703 | ltab.limit->file = source_file_lookup_path (filename); | |
704 | ||
705 | ltab.limit->addr = core_text_sect->vma + offset; | |
706 | ||
707 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
708 | 1) the previous symbol, if it's from the same function, or |
709 | 2) a symtab lookup. */ | |
252b5132 RH |
710 | if (prev && ltab.limit->file == prev->file && |
711 | strcmp (ltab.limit->name, prev->name) == 0) | |
712 | { | |
713 | ltab.limit->is_static = prev->is_static; | |
714 | } | |
715 | else | |
716 | { | |
717 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
718 | ltab.limit->is_static = sym->is_static; | |
719 | } | |
720 | ||
721 | prev = ltab.limit; | |
722 | ||
ef368dac | 723 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 724 | are *not* prefixed by '_'. */ |
252b5132 RH |
725 | if (ltab.limit->name[0] == 'm' && discard_underscores |
726 | && strcmp (ltab.limit->name, "main") == 0) | |
ef368dac | 727 | discard_underscores = 0; |
252b5132 | 728 | |
4a607dcc ILT |
729 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
730 | (unsigned long) (ltab.limit - ltab.base), | |
731 | ltab.limit->name, | |
fdcf7d43 | 732 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
733 | ++ltab.limit; |
734 | } | |
735 | ||
ef368dac | 736 | /* Update sentinels. */ |
1355568a | 737 | sentinel = sym_lookup (&symtab, (bfd_vma) 0); |
0eee5820 | 738 | |
88793399 NC |
739 | if (sentinel |
740 | && strcmp (sentinel->name, "<locore>") == 0 | |
252b5132 | 741 | && min_vma <= sentinel->end_addr) |
ef368dac | 742 | sentinel->end_addr = min_vma - 1; |
252b5132 | 743 | |
1355568a | 744 | sentinel = sym_lookup (&symtab, ~(bfd_vma) 0); |
0eee5820 | 745 | |
88793399 NC |
746 | if (sentinel |
747 | && strcmp (sentinel->name, "<hicore>") == 0 | |
748 | && max_vma >= sentinel->addr) | |
ef368dac | 749 | sentinel->addr = max_vma + 1; |
252b5132 | 750 | |
ef368dac | 751 | /* Copy in function symbols. */ |
252b5132 RH |
752 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
753 | ltab.limit += symtab.len; | |
754 | ||
755 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
756 | { | |
757 | fprintf (stderr, | |
758 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
759 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
760 | done (1); | |
761 | } | |
762 | ||
ef368dac | 763 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
764 | symtab_finalize (<ab); |
765 | free (symtab.base); | |
766 | symtab = ltab; | |
252b5132 | 767 | } |