Commit | Line | Data |
---|---|---|
ef368dac NC |
1 | /* corefile.c |
2 | ||
d6a39701 AM |
3 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 |
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 | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
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; | |
31 | int core_num_syms; | |
32 | asymbol **core_syms; | |
33 | asection *core_text_sect; | |
34 | PTR core_text_space; | |
35 | ||
36 | int min_insn_size; | |
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 RH |
54 | |
55 | static void | |
3e8f6abf | 56 | read_function_mappings (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 |
3e8f6abf | 142 | core_init (const char *aout_name) |
252b5132 | 143 | { |
37b1bfcd | 144 | int core_sym_bytes; |
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. */ |
37b1bfcd BE |
175 | core_sym_bytes = bfd_get_symtab_upper_bound (core_bfd); |
176 | if (core_sym_bytes < 0) | |
252b5132 | 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 | ||
37b1bfcd | 183 | core_syms = (asymbol **) xmalloc (core_sym_bytes); |
252b5132 | 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 |
3e8f6abf | 218 | core_get_text_space (bfd *cbfd) |
252b5132 | 219 | { |
67cf9bc5 | 220 | core_text_space = malloc (bfd_get_section_size (core_text_sect)); |
252b5132 RH |
221 | |
222 | if (!core_text_space) | |
223 | { | |
fdcf7d43 | 224 | fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"), |
67cf9bc5 | 225 | whoami, (unsigned long) bfd_get_section_size (core_text_sect)); |
252b5132 RH |
226 | done (1); |
227 | } | |
0eee5820 | 228 | |
1355568a | 229 | if (!bfd_get_section_contents (cbfd, core_text_sect, core_text_space, |
67cf9bc5 | 230 | 0, bfd_get_section_size (core_text_sect))) |
252b5132 RH |
231 | { |
232 | bfd_perror ("bfd_get_section_contents"); | |
233 | free (core_text_space); | |
234 | core_text_space = 0; | |
235 | } | |
0eee5820 | 236 | |
252b5132 | 237 | if (!core_text_space) |
ef368dac | 238 | fprintf (stderr, _("%s: can't do -c\n"), whoami); |
252b5132 RH |
239 | } |
240 | ||
241 | ||
242 | void | |
3e8f6abf | 243 | find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
252b5132 RH |
244 | { |
245 | switch (bfd_get_arch (core_bfd)) | |
246 | { | |
247 | case bfd_arch_i386: | |
248 | i386_find_call (parent, p_lowpc, p_highpc); | |
249 | break; | |
250 | ||
251 | case bfd_arch_alpha: | |
252 | alpha_find_call (parent, p_lowpc, p_highpc); | |
253 | break; | |
254 | ||
255 | case bfd_arch_vax: | |
256 | vax_find_call (parent, p_lowpc, p_highpc); | |
257 | break; | |
258 | ||
259 | case bfd_arch_sparc: | |
260 | sparc_find_call (parent, p_lowpc, p_highpc); | |
261 | break; | |
262 | ||
263 | case bfd_arch_tahoe: | |
264 | tahoe_find_call (parent, p_lowpc, p_highpc); | |
265 | break; | |
266 | ||
ec0806ec JT |
267 | case bfd_arch_mips: |
268 | mips_find_call (parent, p_lowpc, p_highpc); | |
269 | break; | |
270 | ||
252b5132 RH |
271 | default: |
272 | fprintf (stderr, _("%s: -c not supported on architecture %s\n"), | |
273 | whoami, bfd_printable_name(core_bfd)); | |
274 | ||
275 | /* Don't give the error more than once. */ | |
b34976b6 | 276 | ignore_direct_calls = FALSE; |
252b5132 RH |
277 | } |
278 | } | |
279 | ||
ef368dac | 280 | /* Return class of symbol SYM. The returned class can be any of: |
0eee5820 AM |
281 | 0 -> symbol is not interesting to us |
282 | 'T' -> symbol is a global name | |
283 | 't' -> symbol is a local (static) name. */ | |
ef368dac | 284 | |
252b5132 | 285 | static int |
3e8f6abf | 286 | core_sym_class (asymbol *sym) |
252b5132 RH |
287 | { |
288 | symbol_info syminfo; | |
289 | const char *name; | |
290 | char sym_prefix; | |
291 | int i; | |
292 | ||
293 | if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0) | |
ef368dac | 294 | return 0; |
252b5132 | 295 | |
ef368dac NC |
296 | /* Must be a text symbol, and static text symbols |
297 | don't qualify if ignore_static_funcs set. */ | |
252b5132 RH |
298 | if (ignore_static_funcs && (sym->flags & BSF_LOCAL)) |
299 | { | |
300 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n", | |
301 | sym->name)); | |
302 | return 0; | |
303 | } | |
304 | ||
305 | bfd_get_symbol_info (core_bfd, sym, &syminfo); | |
306 | i = syminfo.type; | |
307 | ||
308 | if (i == 'T') | |
ef368dac | 309 | return i; /* It's a global symbol. */ |
252b5132 RH |
310 | |
311 | if (i == 'W') | |
ef368dac NC |
312 | /* Treat weak symbols as text symbols. FIXME: a weak symbol may |
313 | also be a data symbol. */ | |
314 | return 'T'; | |
252b5132 RH |
315 | |
316 | if (i != 't') | |
317 | { | |
ef368dac | 318 | /* Not a static text symbol. */ |
252b5132 RH |
319 | DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n", |
320 | sym->name, i)); | |
321 | return 0; | |
322 | } | |
323 | ||
ef368dac | 324 | /* Do some more filtering on static function-names. */ |
252b5132 | 325 | if (ignore_static_funcs) |
ef368dac NC |
326 | return 0; |
327 | ||
328 | /* Can't zero-length name or funny characters in name, where | |
329 | `funny' includes: `.' (.o file names) and `$' (Pascal labels). */ | |
252b5132 | 330 | if (!sym->name || sym->name[0] == '\0') |
ef368dac | 331 | return 0; |
252b5132 RH |
332 | |
333 | for (name = sym->name; *name; ++name) | |
334 | { | |
335 | if (*name == '.' || *name == '$') | |
ef368dac NC |
336 | return 0; |
337 | } | |
0eee5820 | 338 | |
ef368dac NC |
339 | /* On systems where the C compiler adds an underscore to all |
340 | names, static names without underscores seem usually to be | |
341 | labels in hand written assembler in the library. We don't want | |
342 | these names. This is certainly necessary on a Sparc running | |
343 | SunOS 4.1 (try profiling a program that does a lot of | |
344 | division). I don't know whether it has harmful side effects on | |
345 | other systems. Perhaps it should be made configurable. */ | |
252b5132 | 346 | sym_prefix = bfd_get_symbol_leading_char (core_bfd); |
0eee5820 | 347 | |
252b5132 | 348 | if ((sym_prefix && sym_prefix != sym->name[0]) |
ef368dac | 349 | /* GCC may add special symbols to help gdb figure out the file |
0eee5820 | 350 | language. We want to ignore these, since sometimes they mask |
ef368dac | 351 | the real function. (dj@ctron) */ |
252b5132 RH |
352 | || !strncmp (sym->name, "__gnu_compiled", 14) |
353 | || !strncmp (sym->name, "___gnu_compiled", 15)) | |
354 | { | |
355 | return 0; | |
356 | } | |
357 | ||
ef368dac NC |
358 | /* If the object file supports marking of function symbols, then |
359 | we can zap anything that doesn't have BSF_FUNCTION set. */ | |
252b5132 RH |
360 | if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0) |
361 | return 0; | |
362 | ||
ef368dac | 363 | return 't'; /* It's a static text symbol. */ |
252b5132 RH |
364 | } |
365 | ||
ef368dac | 366 | /* Get whatever source info we can get regarding address ADDR. */ |
252b5132 | 367 | |
b34976b6 | 368 | static bfd_boolean |
3e8f6abf | 369 | get_src_info (bfd_vma addr, const char **filename, const char **name, int *line_num) |
252b5132 RH |
370 | { |
371 | const char *fname = 0, *func_name = 0; | |
372 | int l = 0; | |
373 | ||
374 | if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms, | |
375 | addr - core_text_sect->vma, | |
376 | &fname, &func_name, (unsigned int *) &l) | |
377 | && fname && func_name && l) | |
378 | { | |
379 | DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n", | |
fdcf7d43 | 380 | (unsigned long) addr, fname, l, func_name)); |
252b5132 RH |
381 | *filename = fname; |
382 | *name = func_name; | |
383 | *line_num = l; | |
b34976b6 | 384 | return TRUE; |
252b5132 RH |
385 | } |
386 | else | |
387 | { | |
388 | DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n", | |
389 | (long) addr, fname ? fname : "<unknown>", l, | |
390 | func_name ? func_name : "<unknown>")); | |
b34976b6 | 391 | return FALSE; |
252b5132 RH |
392 | } |
393 | } | |
394 | ||
ef368dac NC |
395 | /* Read in symbol table from core. |
396 | One symbol per function is entered. */ | |
252b5132 | 397 | |
252b5132 | 398 | void |
37b1bfcd | 399 | core_create_function_syms () |
252b5132 | 400 | { |
1355568a AM |
401 | bfd_vma min_vma = ~(bfd_vma) 0; |
402 | bfd_vma max_vma = 0; | |
252b5132 RH |
403 | int class; |
404 | long i, found, skip; | |
405 | unsigned int j; | |
406 | ||
ef368dac | 407 | /* Pass 1 - determine upper bound on number of function names. */ |
252b5132 | 408 | symtab.len = 0; |
0eee5820 | 409 | |
252b5132 RH |
410 | for (i = 0; i < core_num_syms; ++i) |
411 | { | |
412 | if (!core_sym_class (core_syms[i])) | |
ef368dac | 413 | continue; |
252b5132 RH |
414 | |
415 | /* This should be replaced with a binary search or hashed | |
0eee5820 | 416 | search. Gross. |
252b5132 RH |
417 | |
418 | Don't create a symtab entry for a function that has | |
419 | a mapping to a file, unless it's the first function | |
420 | in the file. */ | |
421 | skip = 0; | |
422 | for (j = 0; j < symbol_map_count; j++) | |
423 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
424 | { | |
425 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 426 | symbol_map [j - 1].file_name)) |
252b5132 RH |
427 | skip = 1; |
428 | break; | |
429 | } | |
0eee5820 | 430 | |
252b5132 | 431 | if (!skip) |
0eee5820 | 432 | ++symtab.len; |
252b5132 RH |
433 | } |
434 | ||
435 | if (symtab.len == 0) | |
436 | { | |
437 | fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name); | |
438 | done (1); | |
439 | } | |
440 | ||
ef368dac | 441 | /* The "+ 2" is for the sentinels. */ |
252b5132 RH |
442 | symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym)); |
443 | ||
ef368dac | 444 | /* Pass 2 - create symbols. */ |
252b5132 | 445 | symtab.limit = symtab.base; |
0eee5820 | 446 | |
252b5132 RH |
447 | for (i = 0; i < core_num_syms; ++i) |
448 | { | |
c3fcc31e AM |
449 | asection *sym_sec; |
450 | ||
252b5132 | 451 | class = core_sym_class (core_syms[i]); |
0eee5820 | 452 | |
252b5132 RH |
453 | if (!class) |
454 | { | |
455 | DBG (AOUTDEBUG, | |
456 | printf ("[core_create_function_syms] rejecting: 0x%lx %s\n", | |
fdcf7d43 ILT |
457 | (unsigned long) core_syms[i]->value, |
458 | core_syms[i]->name)); | |
252b5132 RH |
459 | continue; |
460 | } | |
0eee5820 | 461 | |
252b5132 RH |
462 | /* This should be replaced with a binary search or hashed |
463 | search. Gross. */ | |
252b5132 RH |
464 | skip = 0; |
465 | found = 0; | |
0eee5820 | 466 | |
252b5132 RH |
467 | for (j = 0; j < symbol_map_count; j++) |
468 | if (!strcmp (core_syms[i]->name, symbol_map[j].function_name)) | |
469 | { | |
470 | if (j > 0 && ! strcmp (symbol_map [j].file_name, | |
0eee5820 | 471 | symbol_map [j - 1].file_name)) |
252b5132 RH |
472 | skip = 1; |
473 | else | |
474 | found = j; | |
475 | break; | |
476 | } | |
477 | ||
478 | if (skip) | |
479 | continue; | |
480 | ||
481 | sym_init (symtab.limit); | |
482 | ||
ef368dac | 483 | /* Symbol offsets are always section-relative. */ |
c3fcc31e AM |
484 | sym_sec = core_syms[i]->section; |
485 | symtab.limit->addr = core_syms[i]->value; | |
486 | if (sym_sec) | |
487 | symtab.limit->addr += bfd_get_section_vma (sym_sec->owner, sym_sec); | |
0eee5820 | 488 | |
252b5132 RH |
489 | if (symbol_map_count |
490 | && !strcmp (core_syms[i]->name, symbol_map[found].function_name)) | |
491 | { | |
492 | symtab.limit->name = symbol_map[found].file_name; | |
493 | symtab.limit->mapped = 1; | |
494 | } | |
495 | else | |
496 | { | |
497 | symtab.limit->name = core_syms[i]->name; | |
498 | symtab.limit->mapped = 0; | |
499 | } | |
500 | ||
ef368dac | 501 | /* Lookup filename and line number, if we can. */ |
252b5132 RH |
502 | { |
503 | const char *filename, *func_name; | |
0eee5820 | 504 | |
252b5132 RH |
505 | if (get_src_info (symtab.limit->addr, &filename, &func_name, |
506 | &symtab.limit->line_num)) | |
507 | { | |
508 | symtab.limit->file = source_file_lookup_path (filename); | |
509 | ||
510 | /* FIXME: Checking __osf__ here does not work with a cross | |
0eee5820 | 511 | gprof. */ |
252b5132 | 512 | #ifdef __osf__ |
ef368dac NC |
513 | /* Suppress symbols that are not function names. This is |
514 | useful to suppress code-labels and aliases. | |
0eee5820 | 515 | |
ef368dac NC |
516 | This is known to be useful under DEC's OSF/1. Under SunOS 4.x, |
517 | labels do not appear in the symbol table info, so this isn't | |
518 | necessary. */ | |
252b5132 RH |
519 | |
520 | if (strcmp (symtab.limit->name, func_name) != 0) | |
521 | { | |
ef368dac NC |
522 | /* The symbol's address maps to a different name, so |
523 | it can't be a function-entry point. This happens | |
524 | for labels, for example. */ | |
252b5132 RH |
525 | DBG (AOUTDEBUG, |
526 | printf ("[core_create_function_syms: rej %s (maps to %s)\n", | |
527 | symtab.limit->name, func_name)); | |
528 | continue; | |
529 | } | |
530 | #endif | |
531 | } | |
532 | } | |
533 | ||
b34976b6 AM |
534 | symtab.limit->is_func = TRUE; |
535 | symtab.limit->is_bb_head = TRUE; | |
0eee5820 | 536 | |
252b5132 | 537 | if (class == 't') |
b34976b6 | 538 | symtab.limit->is_static = TRUE; |
252b5132 | 539 | |
8e1a114b DB |
540 | /* Keep track of the minimum and maximum vma addresses used by all |
541 | symbols. When computing the max_vma, use the ending address of the | |
542 | section containing the symbol, if available. */ | |
252b5132 | 543 | min_vma = MIN (symtab.limit->addr, min_vma); |
c3fcc31e AM |
544 | if (sym_sec) |
545 | max_vma = MAX (bfd_get_section_vma (sym_sec->owner, sym_sec) | |
546 | + bfd_section_size (sym_sec->owner, sym_sec) - 1, | |
547 | max_vma); | |
8e1a114b DB |
548 | else |
549 | max_vma = MAX (symtab.limit->addr, max_vma); | |
252b5132 | 550 | |
ef368dac | 551 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 552 | are *not* prefixed by '_'. */ |
252b5132 RH |
553 | if (symtab.limit->name[0] == 'm' && discard_underscores |
554 | && strcmp (symtab.limit->name, "main") == 0) | |
ef368dac | 555 | discard_underscores = 0; |
252b5132 RH |
556 | |
557 | DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n", | |
558 | (long) (symtab.limit - symtab.base), | |
fdcf7d43 ILT |
559 | symtab.limit->name, |
560 | (unsigned long) symtab.limit->addr)); | |
252b5132 RH |
561 | ++symtab.limit; |
562 | } | |
563 | ||
ef368dac | 564 | /* Create sentinels. */ |
252b5132 RH |
565 | sym_init (symtab.limit); |
566 | symtab.limit->name = "<locore>"; | |
567 | symtab.limit->addr = 0; | |
568 | symtab.limit->end_addr = min_vma - 1; | |
569 | ++symtab.limit; | |
570 | ||
571 | sym_init (symtab.limit); | |
572 | symtab.limit->name = "<hicore>"; | |
573 | symtab.limit->addr = max_vma + 1; | |
1355568a | 574 | symtab.limit->end_addr = ~(bfd_vma) 0; |
252b5132 RH |
575 | ++symtab.limit; |
576 | ||
577 | symtab.len = symtab.limit - symtab.base; | |
578 | symtab_finalize (&symtab); | |
579 | } | |
580 | ||
ef368dac NC |
581 | /* Read in symbol table from core. |
582 | One symbol per line of source code is entered. */ | |
252b5132 | 583 | |
252b5132 | 584 | void |
37b1bfcd | 585 | core_create_line_syms () |
252b5132 RH |
586 | { |
587 | char *prev_name, *prev_filename; | |
1355568a AM |
588 | unsigned int prev_name_len, prev_filename_len; |
589 | bfd_vma vma, min_vma = ~(bfd_vma) 0, max_vma = 0; | |
252b5132 RH |
590 | Sym *prev, dummy, *sentinel, *sym; |
591 | const char *filename; | |
592 | int prev_line_num; | |
593 | Sym_Table ltab; | |
bb02f434 | 594 | bfd_vma vma_high; |
0eee5820 | 595 | |
ef368dac NC |
596 | /* Create symbols for functions as usual. This is necessary in |
597 | cases where parts of a program were not compiled with -g. For | |
598 | those parts we still want to get info at the function level. */ | |
37b1bfcd | 599 | core_create_function_syms (); |
252b5132 | 600 | |
37b1bfcd | 601 | /* Pass 1: count the number of symbols. */ |
ef368dac NC |
602 | |
603 | /* To find all line information, walk through all possible | |
604 | text-space addresses (one by one!) and get the debugging | |
605 | info for each address. When the debugging info changes, | |
606 | it is time to create a new symbol. | |
0eee5820 | 607 | |
ef368dac | 608 | Of course, this is rather slow and it would be better if |
37b1bfcd | 609 | BFD would provide an iterator for enumerating all line infos. */ |
252b5132 RH |
610 | prev_name_len = PATH_MAX; |
611 | prev_filename_len = PATH_MAX; | |
612 | prev_name = xmalloc (prev_name_len); | |
613 | prev_filename = xmalloc (prev_filename_len); | |
614 | ltab.len = 0; | |
615 | prev_line_num = 0; | |
0eee5820 | 616 | |
67cf9bc5 | 617 | vma_high = core_text_sect->vma + bfd_get_section_size (core_text_sect); |
37b1bfcd | 618 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 | 619 | { |
1355568a | 620 | unsigned int len; |
252b5132 | 621 | |
252b5132 RH |
622 | if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num) |
623 | || (prev_line_num == dummy.line_num | |
624 | && prev_name != NULL | |
625 | && strcmp (prev_name, dummy.name) == 0 | |
626 | && strcmp (prev_filename, filename) == 0)) | |
ef368dac | 627 | continue; |
252b5132 RH |
628 | |
629 | ++ltab.len; | |
630 | prev_line_num = dummy.line_num; | |
631 | ||
632 | len = strlen (dummy.name); | |
633 | if (len >= prev_name_len) | |
634 | { | |
635 | prev_name_len = len + 1024; | |
636 | free (prev_name); | |
637 | prev_name = xmalloc (prev_name_len); | |
638 | } | |
0eee5820 | 639 | |
252b5132 | 640 | strcpy (prev_name, dummy.name); |
252b5132 | 641 | len = strlen (filename); |
0eee5820 | 642 | |
252b5132 RH |
643 | if (len >= prev_filename_len) |
644 | { | |
645 | prev_filename_len = len + 1024; | |
646 | free (prev_filename); | |
647 | prev_filename = xmalloc (prev_filename_len); | |
648 | } | |
0eee5820 | 649 | |
252b5132 RH |
650 | strcpy (prev_filename, filename); |
651 | ||
652 | min_vma = MIN (vma, min_vma); | |
653 | max_vma = MAX (vma, max_vma); | |
654 | } | |
655 | ||
656 | free (prev_name); | |
657 | free (prev_filename); | |
658 | ||
ef368dac | 659 | /* Make room for function symbols, too. */ |
252b5132 RH |
660 | ltab.len += symtab.len; |
661 | ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym)); | |
662 | ltab.limit = ltab.base; | |
663 | ||
ef368dac | 664 | /* Pass 2 - create symbols. */ |
252b5132 RH |
665 | |
666 | /* We now set is_static as we go along, rather than by running | |
667 | through the symbol table at the end. | |
668 | ||
669 | The old way called symtab_finalize before the is_static pass, | |
670 | causing a problem since symtab_finalize uses is_static as part of | |
671 | its address conflict resolution algorithm. Since global symbols | |
672 | were prefered over static symbols, and all line symbols were | |
673 | global at that point, static function names that conflicted with | |
674 | their own line numbers (static, but labeled as global) were | |
675 | rejected in favor of the line num. | |
676 | ||
677 | This was not the desired functionality. We always want to keep | |
678 | our function symbols and discard any conflicting line symbols. | |
679 | Perhaps symtab_finalize should be modified to make this | |
680 | distinction as well, but the current fix works and the code is a | |
681 | lot cleaner now. */ | |
252b5132 | 682 | prev = 0; |
0eee5820 | 683 | |
37b1bfcd | 684 | for (vma = core_text_sect->vma; vma < vma_high; vma += min_insn_size) |
252b5132 RH |
685 | { |
686 | sym_init (ltab.limit); | |
0eee5820 | 687 | |
37b1bfcd | 688 | if (!get_src_info (vma, &filename, <ab.limit->name, <ab.limit->line_num) |
252b5132 RH |
689 | || (prev && prev->line_num == ltab.limit->line_num |
690 | && strcmp (prev->name, ltab.limit->name) == 0 | |
691 | && strcmp (prev->file->name, filename) == 0)) | |
ef368dac | 692 | continue; |
252b5132 | 693 | |
ef368dac | 694 | /* Make name pointer a malloc'ed string. */ |
252b5132 RH |
695 | ltab.limit->name = xstrdup (ltab.limit->name); |
696 | ltab.limit->file = source_file_lookup_path (filename); | |
697 | ||
37b1bfcd | 698 | ltab.limit->addr = vma; |
252b5132 RH |
699 | |
700 | /* Set is_static based on the enclosing function, using either: | |
0eee5820 AM |
701 | 1) the previous symbol, if it's from the same function, or |
702 | 2) a symtab lookup. */ | |
252b5132 RH |
703 | if (prev && ltab.limit->file == prev->file && |
704 | strcmp (ltab.limit->name, prev->name) == 0) | |
705 | { | |
706 | ltab.limit->is_static = prev->is_static; | |
707 | } | |
708 | else | |
709 | { | |
710 | sym = sym_lookup(&symtab, ltab.limit->addr); | |
711 | ltab.limit->is_static = sym->is_static; | |
712 | } | |
713 | ||
714 | prev = ltab.limit; | |
715 | ||
ef368dac | 716 | /* If we see "main" without an initial '_', we assume names |
0eee5820 | 717 | are *not* prefixed by '_'. */ |
252b5132 RH |
718 | if (ltab.limit->name[0] == 'm' && discard_underscores |
719 | && strcmp (ltab.limit->name, "main") == 0) | |
ef368dac | 720 | discard_underscores = 0; |
252b5132 | 721 | |
4a607dcc ILT |
722 | DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n", |
723 | (unsigned long) (ltab.limit - ltab.base), | |
724 | ltab.limit->name, | |
fdcf7d43 | 725 | (unsigned long) ltab.limit->addr)); |
252b5132 RH |
726 | ++ltab.limit; |
727 | } | |
728 | ||
ef368dac | 729 | /* Update sentinels. */ |
1355568a | 730 | sentinel = sym_lookup (&symtab, (bfd_vma) 0); |
0eee5820 | 731 | |
88793399 NC |
732 | if (sentinel |
733 | && strcmp (sentinel->name, "<locore>") == 0 | |
252b5132 | 734 | && min_vma <= sentinel->end_addr) |
ef368dac | 735 | sentinel->end_addr = min_vma - 1; |
252b5132 | 736 | |
1355568a | 737 | sentinel = sym_lookup (&symtab, ~(bfd_vma) 0); |
0eee5820 | 738 | |
88793399 NC |
739 | if (sentinel |
740 | && strcmp (sentinel->name, "<hicore>") == 0 | |
741 | && max_vma >= sentinel->addr) | |
ef368dac | 742 | sentinel->addr = max_vma + 1; |
252b5132 | 743 | |
ef368dac | 744 | /* Copy in function symbols. */ |
252b5132 RH |
745 | memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym)); |
746 | ltab.limit += symtab.len; | |
747 | ||
748 | if ((unsigned int) (ltab.limit - ltab.base) != ltab.len) | |
749 | { | |
750 | fprintf (stderr, | |
751 | _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"), | |
752 | whoami, ltab.len, (long) (ltab.limit - ltab.base)); | |
753 | done (1); | |
754 | } | |
755 | ||
ef368dac | 756 | /* Finalize ltab and make it symbol table. */ |
252b5132 RH |
757 | symtab_finalize (<ab); |
758 | free (symtab.base); | |
759 | symtab = ltab; | |
252b5132 | 760 | } |