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