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