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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
1bac305b | 4 | 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
8926118c | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "gdbcore.h" | |
30 | #include "frame.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
c5aa993b | 41 | #include "inferior.h" /* for write_pc */ |
5b5d99cf | 42 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 43 | #include "gdb-stabs.h" |
04ea0df1 | 44 | #include "gdb_obstack.h" |
d75b5104 | 45 | #include "completer.h" |
af5f3db6 | 46 | #include "bcache.h" |
38017ce8 | 47 | #include <readline/readline.h> |
7e8580c1 | 48 | #include "gdb_assert.h" |
c906108c | 49 | |
c906108c SS |
50 | #include <sys/types.h> |
51 | #include <fcntl.h> | |
52 | #include "gdb_string.h" | |
53 | #include "gdb_stat.h" | |
54 | #include <ctype.h> | |
55 | #include <time.h> | |
c906108c SS |
56 | |
57 | #ifndef O_BINARY | |
58 | #define O_BINARY 0 | |
59 | #endif | |
60 | ||
61 | #ifdef HPUXHPPA | |
62 | ||
63 | /* Some HP-UX related globals to clear when a new "main" | |
64 | symbol file is loaded. HP-specific. */ | |
65 | ||
66 | extern int hp_som_som_object_present; | |
67 | extern int hp_cxx_exception_support_initialized; | |
68 | #define RESET_HP_UX_GLOBALS() do {\ | |
69 | hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ | |
70 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ | |
71 | } while (0) | |
72 | #endif | |
73 | ||
917317f4 | 74 | int (*ui_load_progress_hook) (const char *section, unsigned long num); |
c2d11a7d JM |
75 | void (*show_load_progress) (const char *section, |
76 | unsigned long section_sent, | |
77 | unsigned long section_size, | |
78 | unsigned long total_sent, | |
79 | unsigned long total_size); | |
507f3c78 KB |
80 | void (*pre_add_symbol_hook) (char *); |
81 | void (*post_add_symbol_hook) (void); | |
82 | void (*target_new_objfile_hook) (struct objfile *); | |
c906108c | 83 | |
74b7792f AC |
84 | static void clear_symtab_users_cleanup (void *ignore); |
85 | ||
c906108c | 86 | /* Global variables owned by this file */ |
c5aa993b | 87 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 88 | |
c906108c SS |
89 | /* External variables and functions referenced. */ |
90 | ||
a14ed312 | 91 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
92 | |
93 | /* Functions this file defines */ | |
94 | ||
95 | #if 0 | |
a14ed312 KB |
96 | static int simple_read_overlay_region_table (void); |
97 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
98 | #endif |
99 | ||
a14ed312 | 100 | static void set_initial_language (void); |
c906108c | 101 | |
a14ed312 | 102 | static void load_command (char *, int); |
c906108c | 103 | |
d7db6da9 FN |
104 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
105 | ||
a14ed312 | 106 | static void add_symbol_file_command (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 109 | |
5b5d99cf JB |
110 | static void reread_separate_symbols (struct objfile *objfile); |
111 | ||
a14ed312 | 112 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 113 | |
a14ed312 | 114 | bfd *symfile_bfd_open (char *); |
c906108c | 115 | |
0e931cf0 JB |
116 | int get_section_index (struct objfile *, char *); |
117 | ||
a14ed312 | 118 | static void find_sym_fns (struct objfile *); |
c906108c | 119 | |
a14ed312 | 120 | static void decrement_reading_symtab (void *); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_invalidate_all (void); |
c906108c | 123 | |
a14ed312 | 124 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 125 | |
a14ed312 | 126 | void list_overlays_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | void map_overlay_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | void unmap_overlay_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static void overlay_auto_command (char *, int); |
c906108c | 133 | |
a14ed312 | 134 | static void overlay_manual_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void overlay_off_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static void overlay_load_command (char *, int); |
c906108c | 139 | |
a14ed312 | 140 | static void overlay_command (char *, int); |
c906108c | 141 | |
a14ed312 | 142 | static void simple_free_overlay_table (void); |
c906108c | 143 | |
a14ed312 | 144 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 145 | |
a14ed312 | 146 | static int simple_read_overlay_table (void); |
c906108c | 147 | |
a14ed312 | 148 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 149 | |
a14ed312 | 150 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 151 | |
a14ed312 | 152 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 153 | |
a14ed312 | 154 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 155 | |
5b5d99cf JB |
156 | static char *find_separate_debug_file (struct objfile *objfile); |
157 | ||
a14ed312 | 158 | static void init_filename_language_table (void); |
392a587b | 159 | |
a14ed312 | 160 | void _initialize_symfile (void); |
c906108c SS |
161 | |
162 | /* List of all available sym_fns. On gdb startup, each object file reader | |
163 | calls add_symtab_fns() to register information on each format it is | |
164 | prepared to read. */ | |
165 | ||
166 | static struct sym_fns *symtab_fns = NULL; | |
167 | ||
168 | /* Flag for whether user will be reloading symbols multiple times. | |
169 | Defaults to ON for VxWorks, otherwise OFF. */ | |
170 | ||
171 | #ifdef SYMBOL_RELOADING_DEFAULT | |
172 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
173 | #else | |
174 | int symbol_reloading = 0; | |
175 | #endif | |
176 | ||
b7209cb4 FF |
177 | /* If non-zero, shared library symbols will be added automatically |
178 | when the inferior is created, new libraries are loaded, or when | |
179 | attaching to the inferior. This is almost always what users will | |
180 | want to have happen; but for very large programs, the startup time | |
181 | will be excessive, and so if this is a problem, the user can clear | |
182 | this flag and then add the shared library symbols as needed. Note | |
183 | that there is a potential for confusion, since if the shared | |
c906108c | 184 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 185 | report all the functions that are actually present. */ |
c906108c SS |
186 | |
187 | int auto_solib_add = 1; | |
b7209cb4 FF |
188 | |
189 | /* For systems that support it, a threshold size in megabytes. If | |
190 | automatically adding a new library's symbol table to those already | |
191 | known to the debugger would cause the total shared library symbol | |
192 | size to exceed this threshhold, then the shlib's symbols are not | |
193 | added. The threshold is ignored if the user explicitly asks for a | |
194 | shlib to be added, such as when using the "sharedlibrary" | |
195 | command. */ | |
196 | ||
197 | int auto_solib_limit; | |
c906108c | 198 | \f |
c5aa993b | 199 | |
c906108c SS |
200 | /* Since this function is called from within qsort, in an ANSI environment |
201 | it must conform to the prototype for qsort, which specifies that the | |
202 | comparison function takes two "void *" pointers. */ | |
203 | ||
204 | static int | |
0cd64fe2 | 205 | compare_symbols (const void *s1p, const void *s2p) |
c906108c SS |
206 | { |
207 | register struct symbol **s1, **s2; | |
208 | ||
209 | s1 = (struct symbol **) s1p; | |
210 | s2 = (struct symbol **) s2p; | |
494b7ec9 | 211 | return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2))); |
c906108c SS |
212 | } |
213 | ||
214 | /* | |
215 | ||
c5aa993b | 216 | LOCAL FUNCTION |
c906108c | 217 | |
c5aa993b | 218 | compare_psymbols -- compare two partial symbols by name |
c906108c | 219 | |
c5aa993b | 220 | DESCRIPTION |
c906108c | 221 | |
c5aa993b JM |
222 | Given pointers to pointers to two partial symbol table entries, |
223 | compare them by name and return -N, 0, or +N (ala strcmp). | |
224 | Typically used by sorting routines like qsort(). | |
c906108c | 225 | |
c5aa993b | 226 | NOTES |
c906108c | 227 | |
c5aa993b JM |
228 | Does direct compare of first two characters before punting |
229 | and passing to strcmp for longer compares. Note that the | |
230 | original version had a bug whereby two null strings or two | |
231 | identically named one character strings would return the | |
232 | comparison of memory following the null byte. | |
c906108c SS |
233 | |
234 | */ | |
235 | ||
236 | static int | |
0cd64fe2 | 237 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 238 | { |
fba7f19c EZ |
239 | register struct partial_symbol **s1, **s2; |
240 | register char *st1, *st2; | |
241 | ||
242 | s1 = (struct partial_symbol **) s1p; | |
243 | s2 = (struct partial_symbol **) s2p; | |
244 | st1 = SYMBOL_SOURCE_NAME (*s1); | |
245 | st2 = SYMBOL_SOURCE_NAME (*s2); | |
246 | ||
c906108c SS |
247 | |
248 | if ((st1[0] - st2[0]) || !st1[0]) | |
249 | { | |
250 | return (st1[0] - st2[0]); | |
251 | } | |
252 | else if ((st1[1] - st2[1]) || !st1[1]) | |
253 | { | |
254 | return (st1[1] - st2[1]); | |
255 | } | |
256 | else | |
257 | { | |
c5aa993b | 258 | return (strcmp (st1, st2)); |
c906108c SS |
259 | } |
260 | } | |
261 | ||
262 | void | |
fba45db2 | 263 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
264 | { |
265 | /* Sort the global list; don't sort the static list */ | |
266 | ||
c5aa993b JM |
267 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
268 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
269 | compare_psymbols); |
270 | } | |
271 | ||
272 | /* Call sort_block_syms to sort alphabetically the symbols of one block. */ | |
273 | ||
274 | void | |
fba45db2 | 275 | sort_block_syms (register struct block *b) |
c906108c SS |
276 | { |
277 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
278 | sizeof (struct symbol *), compare_symbols); | |
279 | } | |
280 | ||
281 | /* Call sort_symtab_syms to sort alphabetically | |
282 | the symbols of each block of one symtab. */ | |
283 | ||
284 | void | |
fba45db2 | 285 | sort_symtab_syms (register struct symtab *s) |
c906108c SS |
286 | { |
287 | register struct blockvector *bv; | |
288 | int nbl; | |
289 | int i; | |
290 | register struct block *b; | |
291 | ||
292 | if (s == 0) | |
293 | return; | |
294 | bv = BLOCKVECTOR (s); | |
295 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
296 | for (i = 0; i < nbl; i++) | |
297 | { | |
298 | b = BLOCKVECTOR_BLOCK (bv, i); | |
299 | if (BLOCK_SHOULD_SORT (b)) | |
300 | sort_block_syms (b); | |
301 | } | |
302 | } | |
303 | ||
304 | /* Make a null terminated copy of the string at PTR with SIZE characters in | |
305 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
306 | Note that the string at PTR does not have to be null terminated, I.E. it | |
307 | may be part of a larger string and we are only saving a substring. */ | |
308 | ||
309 | char * | |
63ca651f | 310 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c SS |
311 | { |
312 | register char *p = (char *) obstack_alloc (obstackp, size + 1); | |
313 | /* Open-coded memcpy--saves function call time. These strings are usually | |
314 | short. FIXME: Is this really still true with a compiler that can | |
315 | inline memcpy? */ | |
316 | { | |
63ca651f | 317 | register const char *p1 = ptr; |
c906108c | 318 | register char *p2 = p; |
63ca651f | 319 | const char *end = ptr + size; |
c906108c SS |
320 | while (p1 != end) |
321 | *p2++ = *p1++; | |
322 | } | |
323 | p[size] = 0; | |
324 | return p; | |
325 | } | |
326 | ||
327 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
328 | in the obstack pointed to by OBSTACKP. */ | |
329 | ||
330 | char * | |
fba45db2 KB |
331 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
332 | const char *s3) | |
c906108c SS |
333 | { |
334 | register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; | |
335 | register char *val = (char *) obstack_alloc (obstackp, len); | |
336 | strcpy (val, s1); | |
337 | strcat (val, s2); | |
338 | strcat (val, s3); | |
339 | return val; | |
340 | } | |
341 | ||
342 | /* True if we are nested inside psymtab_to_symtab. */ | |
343 | ||
344 | int currently_reading_symtab = 0; | |
345 | ||
346 | static void | |
fba45db2 | 347 | decrement_reading_symtab (void *dummy) |
c906108c SS |
348 | { |
349 | currently_reading_symtab--; | |
350 | } | |
351 | ||
352 | /* Get the symbol table that corresponds to a partial_symtab. | |
353 | This is fast after the first time you do it. In fact, there | |
354 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
355 | case inline. */ | |
356 | ||
357 | struct symtab * | |
fba45db2 | 358 | psymtab_to_symtab (register struct partial_symtab *pst) |
c906108c SS |
359 | { |
360 | /* If it's been looked up before, return it. */ | |
361 | if (pst->symtab) | |
362 | return pst->symtab; | |
363 | ||
364 | /* If it has not yet been read in, read it. */ | |
365 | if (!pst->readin) | |
c5aa993b | 366 | { |
c906108c SS |
367 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
368 | currently_reading_symtab++; | |
369 | (*pst->read_symtab) (pst); | |
370 | do_cleanups (back_to); | |
371 | } | |
372 | ||
373 | return pst->symtab; | |
374 | } | |
375 | ||
376 | /* Initialize entry point information for this objfile. */ | |
377 | ||
378 | void | |
fba45db2 | 379 | init_entry_point_info (struct objfile *objfile) |
c906108c SS |
380 | { |
381 | /* Save startup file's range of PC addresses to help blockframe.c | |
382 | decide where the bottom of the stack is. */ | |
383 | ||
c5aa993b | 384 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) |
c906108c SS |
385 | { |
386 | /* Executable file -- record its entry point so we'll recognize | |
c5aa993b JM |
387 | the startup file because it contains the entry point. */ |
388 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
c906108c SS |
389 | } |
390 | else | |
391 | { | |
392 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
c5aa993b | 393 | objfile->ei.entry_point = INVALID_ENTRY_POINT; |
c906108c | 394 | } |
c5aa993b JM |
395 | objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC; |
396 | objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
397 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
398 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
399 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
400 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
c906108c SS |
401 | } |
402 | ||
403 | /* Get current entry point address. */ | |
404 | ||
405 | CORE_ADDR | |
fba45db2 | 406 | entry_point_address (void) |
c906108c SS |
407 | { |
408 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
409 | } | |
410 | ||
411 | /* Remember the lowest-addressed loadable section we've seen. | |
412 | This function is called via bfd_map_over_sections. | |
413 | ||
414 | In case of equal vmas, the section with the largest size becomes the | |
415 | lowest-addressed loadable section. | |
416 | ||
417 | If the vmas and sizes are equal, the last section is considered the | |
418 | lowest-addressed loadable section. */ | |
419 | ||
420 | void | |
4efb68b1 | 421 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 422 | { |
c5aa993b | 423 | asection **lowest = (asection **) obj; |
c906108c SS |
424 | |
425 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
426 | return; | |
427 | if (!*lowest) | |
428 | *lowest = sect; /* First loadable section */ | |
429 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
430 | *lowest = sect; /* A lower loadable section */ | |
431 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
432 | && (bfd_section_size (abfd, (*lowest)) | |
433 | <= bfd_section_size (abfd, sect))) | |
434 | *lowest = sect; | |
435 | } | |
436 | ||
62557bbc KB |
437 | |
438 | /* Build (allocate and populate) a section_addr_info struct from | |
439 | an existing section table. */ | |
440 | ||
441 | extern struct section_addr_info * | |
442 | build_section_addr_info_from_section_table (const struct section_table *start, | |
443 | const struct section_table *end) | |
444 | { | |
445 | struct section_addr_info *sap; | |
446 | const struct section_table *stp; | |
447 | int oidx; | |
448 | ||
449 | sap = xmalloc (sizeof (struct section_addr_info)); | |
450 | memset (sap, 0, sizeof (struct section_addr_info)); | |
451 | ||
452 | for (stp = start, oidx = 0; stp != end; stp++) | |
453 | { | |
fbd35540 MS |
454 | if (bfd_get_section_flags (stp->bfd, |
455 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) | |
62557bbc KB |
456 | && oidx < MAX_SECTIONS) |
457 | { | |
458 | sap->other[oidx].addr = stp->addr; | |
fbd35540 MS |
459 | sap->other[oidx].name |
460 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); | |
62557bbc KB |
461 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
462 | oidx++; | |
463 | } | |
464 | } | |
465 | ||
466 | return sap; | |
467 | } | |
468 | ||
469 | ||
470 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
471 | ||
472 | extern void | |
473 | free_section_addr_info (struct section_addr_info *sap) | |
474 | { | |
475 | int idx; | |
476 | ||
477 | for (idx = 0; idx < MAX_SECTIONS; idx++) | |
478 | if (sap->other[idx].name) | |
b8c9b27d KB |
479 | xfree (sap->other[idx].name); |
480 | xfree (sap); | |
62557bbc KB |
481 | } |
482 | ||
483 | ||
e8289572 JB |
484 | /* Initialize OBJFILE's sect_index_* members. */ |
485 | static void | |
486 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 487 | { |
e8289572 | 488 | asection *sect; |
c906108c | 489 | int i; |
e8289572 | 490 | |
b8fbeb18 EZ |
491 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
492 | if (sect) | |
493 | objfile->sect_index_text = sect->index; | |
494 | ||
495 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
496 | if (sect) | |
497 | objfile->sect_index_data = sect->index; | |
498 | ||
499 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
500 | if (sect) | |
501 | objfile->sect_index_bss = sect->index; | |
502 | ||
503 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
504 | if (sect) | |
505 | objfile->sect_index_rodata = sect->index; | |
506 | ||
bbcd32ad FF |
507 | /* This is where things get really weird... We MUST have valid |
508 | indices for the various sect_index_* members or gdb will abort. | |
509 | So if for example, there is no ".text" section, we have to | |
510 | accomodate that. Except when explicitly adding symbol files at | |
511 | some address, section_offsets contains nothing but zeros, so it | |
512 | doesn't matter which slot in section_offsets the individual | |
513 | sect_index_* members index into. So if they are all zero, it is | |
514 | safe to just point all the currently uninitialized indices to the | |
515 | first slot. */ | |
516 | ||
517 | for (i = 0; i < objfile->num_sections; i++) | |
518 | { | |
519 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
520 | { | |
521 | break; | |
522 | } | |
523 | } | |
524 | if (i == objfile->num_sections) | |
525 | { | |
526 | if (objfile->sect_index_text == -1) | |
527 | objfile->sect_index_text = 0; | |
528 | if (objfile->sect_index_data == -1) | |
529 | objfile->sect_index_data = 0; | |
530 | if (objfile->sect_index_bss == -1) | |
531 | objfile->sect_index_bss = 0; | |
532 | if (objfile->sect_index_rodata == -1) | |
533 | objfile->sect_index_rodata = 0; | |
534 | } | |
b8fbeb18 | 535 | } |
c906108c | 536 | |
e8289572 JB |
537 | |
538 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
539 | of how to represent it for fast symbol reading. This is the default | |
540 | version of the sym_fns.sym_offsets function for symbol readers that | |
541 | don't need to do anything special. It allocates a section_offsets table | |
542 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
543 | ||
544 | void | |
545 | default_symfile_offsets (struct objfile *objfile, | |
546 | struct section_addr_info *addrs) | |
547 | { | |
548 | int i; | |
549 | ||
550 | objfile->num_sections = SECT_OFF_MAX; | |
551 | objfile->section_offsets = (struct section_offsets *) | |
552 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); | |
553 | memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS); | |
554 | ||
555 | /* Now calculate offsets for section that were specified by the | |
556 | caller. */ | |
557 | for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
558 | { | |
559 | struct other_sections *osp ; | |
560 | ||
561 | osp = &addrs->other[i] ; | |
562 | if (osp->addr == 0) | |
563 | continue; | |
564 | ||
565 | /* Record all sections in offsets */ | |
566 | /* The section_offsets in the objfile are here filled in using | |
567 | the BFD index. */ | |
568 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
569 | } | |
570 | ||
571 | /* Remember the bfd indexes for the .text, .data, .bss and | |
572 | .rodata sections. */ | |
573 | init_objfile_sect_indices (objfile); | |
574 | } | |
575 | ||
576 | ||
c906108c SS |
577 | /* Process a symbol file, as either the main file or as a dynamically |
578 | loaded file. | |
579 | ||
96baa820 JM |
580 | OBJFILE is where the symbols are to be read from. |
581 | ||
7e8580c1 JB |
582 | ADDRS is the list of section load addresses. If the user has given |
583 | an 'add-symbol-file' command, then this is the list of offsets and | |
584 | addresses he or she provided as arguments to the command; or, if | |
585 | we're handling a shared library, these are the actual addresses the | |
586 | sections are loaded at, according to the inferior's dynamic linker | |
587 | (as gleaned by GDB's shared library code). We convert each address | |
588 | into an offset from the section VMA's as it appears in the object | |
589 | file, and then call the file's sym_offsets function to convert this | |
590 | into a format-specific offset table --- a `struct section_offsets'. | |
591 | If ADDRS is non-zero, OFFSETS must be zero. | |
592 | ||
593 | OFFSETS is a table of section offsets already in the right | |
594 | format-specific representation. NUM_OFFSETS is the number of | |
595 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
596 | assume this is the proper table the call to sym_offsets described | |
597 | above would produce. Instead of calling sym_offsets, we just dump | |
598 | it right into objfile->section_offsets. (When we're re-reading | |
599 | symbols from an objfile, we don't have the original load address | |
600 | list any more; all we have is the section offset table.) If | |
601 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
602 | |
603 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
604 | it's an extra symbol file such as dynamically loaded code. | |
605 | ||
606 | VERBO is nonzero if the caller has printed a verbose message about | |
607 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
608 | |
609 | void | |
7e8580c1 JB |
610 | syms_from_objfile (struct objfile *objfile, |
611 | struct section_addr_info *addrs, | |
612 | struct section_offsets *offsets, | |
613 | int num_offsets, | |
614 | int mainline, | |
615 | int verbo) | |
c906108c | 616 | { |
2acceee2 JM |
617 | asection *lower_sect; |
618 | asection *sect; | |
619 | CORE_ADDR lower_offset; | |
620 | struct section_addr_info local_addr; | |
c906108c | 621 | struct cleanup *old_chain; |
2acceee2 JM |
622 | int i; |
623 | ||
7e8580c1 | 624 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 625 | |
7e8580c1 JB |
626 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
627 | list. We now establish the convention that an addr of zero means | |
628 | no load address was specified. */ | |
629 | if (! addrs && ! offsets) | |
2acceee2 JM |
630 | { |
631 | memset (&local_addr, 0, sizeof (local_addr)); | |
632 | addrs = &local_addr; | |
633 | } | |
c906108c | 634 | |
7e8580c1 JB |
635 | /* Now either addrs or offsets is non-zero. */ |
636 | ||
c906108c SS |
637 | init_entry_point_info (objfile); |
638 | find_sym_fns (objfile); | |
639 | ||
75245b24 MS |
640 | if (objfile->sf == NULL) |
641 | return; /* No symbols. */ | |
642 | ||
c906108c SS |
643 | /* Make sure that partially constructed symbol tables will be cleaned up |
644 | if an error occurs during symbol reading. */ | |
74b7792f | 645 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 646 | |
c5aa993b | 647 | if (mainline) |
c906108c SS |
648 | { |
649 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 650 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 651 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
652 | |
653 | /* Since no error yet, throw away the old symbol table. */ | |
654 | ||
655 | if (symfile_objfile != NULL) | |
656 | { | |
657 | free_objfile (symfile_objfile); | |
658 | symfile_objfile = NULL; | |
659 | } | |
660 | ||
661 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
662 | If the user wants to get rid of them, they should do "symbol-file" |
663 | without arguments first. Not sure this is the best behavior | |
664 | (PR 2207). */ | |
c906108c | 665 | |
c5aa993b | 666 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
667 | } |
668 | ||
669 | /* Convert addr into an offset rather than an absolute address. | |
670 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 671 | and assume that <addr> is where that got loaded. |
c906108c | 672 | |
53a5351d JM |
673 | We no longer warn if the lowest section is not a text segment (as |
674 | happens for the PA64 port. */ | |
e7cf9df1 | 675 | if (!mainline) |
c906108c | 676 | { |
2acceee2 JM |
677 | /* Find lowest loadable section to be used as starting point for |
678 | continguous sections. FIXME!! won't work without call to find | |
679 | .text first, but this assumes text is lowest section. */ | |
680 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
681 | if (lower_sect == NULL) | |
c906108c | 682 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 683 | &lower_sect); |
2acceee2 | 684 | if (lower_sect == NULL) |
c906108c SS |
685 | warning ("no loadable sections found in added symbol-file %s", |
686 | objfile->name); | |
b8fbeb18 EZ |
687 | else |
688 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) | |
689 | warning ("Lowest section in %s is %s at %s", | |
690 | objfile->name, | |
691 | bfd_section_name (objfile->obfd, lower_sect), | |
692 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
693 | if (lower_sect != NULL) |
694 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
695 | else | |
696 | lower_offset = 0; | |
697 | ||
13de58df | 698 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
699 | FIXME! Sections must be in order of increasing loadable section |
700 | so that contiguous sections can use the lower-offset!!! | |
701 | ||
13de58df JB |
702 | Adjust offsets if the segments are not contiguous. |
703 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
704 | the offset of the highest loadable section lower than it |
705 | (the loadable section directly below it in memory). | |
706 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
707 | ||
13de58df | 708 | /* Calculate offsets for sections. */ |
7e8580c1 JB |
709 | if (addrs) |
710 | for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++) | |
711 | { | |
712 | if (addrs->other[i].addr != 0) | |
713 | { | |
714 | sect = bfd_get_section_by_name (objfile->obfd, | |
715 | addrs->other[i].name); | |
716 | if (sect) | |
717 | { | |
718 | addrs->other[i].addr | |
719 | -= bfd_section_vma (objfile->obfd, sect); | |
720 | lower_offset = addrs->other[i].addr; | |
721 | /* This is the index used by BFD. */ | |
722 | addrs->other[i].sectindex = sect->index ; | |
723 | } | |
724 | else | |
725 | { | |
726 | warning ("section %s not found in %s", | |
727 | addrs->other[i].name, | |
728 | objfile->name); | |
729 | addrs->other[i].addr = 0; | |
730 | } | |
731 | } | |
732 | else | |
733 | addrs->other[i].addr = lower_offset; | |
734 | } | |
c906108c SS |
735 | } |
736 | ||
737 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
738 | appear for this new file, and record how verbose to be, then do the | |
739 | initial symbol reading for this file. */ | |
740 | ||
c5aa993b | 741 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 742 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 743 | |
7e8580c1 JB |
744 | if (addrs) |
745 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
746 | else | |
747 | { | |
748 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
749 | ||
750 | /* Just copy in the offset table directly as given to us. */ | |
751 | objfile->num_sections = num_offsets; | |
752 | objfile->section_offsets | |
753 | = ((struct section_offsets *) | |
754 | obstack_alloc (&objfile->psymbol_obstack, size)); | |
755 | memcpy (objfile->section_offsets, offsets, size); | |
756 | ||
757 | init_objfile_sect_indices (objfile); | |
758 | } | |
c906108c SS |
759 | |
760 | #ifndef IBM6000_TARGET | |
761 | /* This is a SVR4/SunOS specific hack, I think. In any event, it | |
762 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
763 | because it knows the mapping between bfd sections and | |
764 | section_offsets. */ | |
765 | /* This is a hack. As far as I can tell, section offsets are not | |
766 | target dependent. They are all set to addr with a couple of | |
767 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
768 | offsets are kept in solib structures anyway and rs6000 xcoff | |
769 | which handles shared libraries in a completely unique way. | |
770 | ||
771 | Section offsets are built similarly, except that they are built | |
772 | by adding addr in all cases because there is no clear mapping | |
773 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 774 | has a different algorithm for finding section offsets. |
c906108c SS |
775 | |
776 | These should probably all be collapsed into some target | |
777 | independent form of shared library support. FIXME. */ | |
778 | ||
2acceee2 | 779 | if (addrs) |
c906108c SS |
780 | { |
781 | struct obj_section *s; | |
782 | ||
2acceee2 JM |
783 | /* Map section offsets in "addr" back to the object's |
784 | sections by comparing the section names with bfd's | |
785 | section names. Then adjust the section address by | |
786 | the offset. */ /* for gdb/13815 */ | |
787 | ||
96baa820 | 788 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 789 | { |
2acceee2 JM |
790 | CORE_ADDR s_addr = 0; |
791 | int i; | |
792 | ||
62557bbc KB |
793 | for (i = 0; |
794 | !s_addr && i < MAX_SECTIONS && addrs->other[i].name; | |
795 | i++) | |
fbd35540 MS |
796 | if (strcmp (bfd_section_name (s->objfile->obfd, |
797 | s->the_bfd_section), | |
798 | addrs->other[i].name) == 0) | |
2acceee2 JM |
799 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
800 | ||
c906108c | 801 | s->addr -= s->offset; |
2acceee2 | 802 | s->addr += s_addr; |
c906108c | 803 | s->endaddr -= s->offset; |
2acceee2 JM |
804 | s->endaddr += s_addr; |
805 | s->offset += s_addr; | |
c906108c SS |
806 | } |
807 | } | |
808 | #endif /* not IBM6000_TARGET */ | |
809 | ||
96baa820 | 810 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 811 | |
c906108c SS |
812 | /* Don't allow char * to have a typename (else would get caddr_t). |
813 | Ditto void *. FIXME: Check whether this is now done by all the | |
814 | symbol readers themselves (many of them now do), and if so remove | |
815 | it from here. */ | |
816 | ||
817 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
818 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
819 | ||
820 | /* Mark the objfile has having had initial symbol read attempted. Note | |
821 | that this does not mean we found any symbols... */ | |
822 | ||
c5aa993b | 823 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
824 | |
825 | /* Discard cleanups as symbol reading was successful. */ | |
826 | ||
827 | discard_cleanups (old_chain); | |
828 | ||
96baa820 | 829 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 830 | dependent code a crack at the new symbols. For instance, this |
96baa820 JM |
831 | could be used to update the values of target-specific symbols GDB |
832 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c SS |
833 | |
834 | TARGET_SYMFILE_POSTREAD (objfile); | |
835 | } | |
836 | ||
837 | /* Perform required actions after either reading in the initial | |
838 | symbols for a new objfile, or mapping in the symbols from a reusable | |
839 | objfile. */ | |
c5aa993b | 840 | |
c906108c | 841 | void |
fba45db2 | 842 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
843 | { |
844 | ||
845 | /* If this is the main symbol file we have to clean up all users of the | |
846 | old main symbol file. Otherwise it is sufficient to fixup all the | |
847 | breakpoints that may have been redefined by this symbol file. */ | |
848 | if (mainline) | |
849 | { | |
850 | /* OK, make it the "real" symbol file. */ | |
851 | symfile_objfile = objfile; | |
852 | ||
853 | clear_symtab_users (); | |
854 | } | |
855 | else | |
856 | { | |
857 | breakpoint_re_set (); | |
858 | } | |
859 | ||
860 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 861 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
862 | } |
863 | ||
864 | /* Process a symbol file, as either the main file or as a dynamically | |
865 | loaded file. | |
866 | ||
867 | NAME is the file name (which will be tilde-expanded and made | |
868 | absolute herein) (but we don't free or modify NAME itself). | |
7904e09f JB |
869 | |
870 | FROM_TTY says how verbose to be. | |
871 | ||
872 | MAINLINE specifies whether this is the main symbol file, or whether | |
873 | it's an extra symbol file such as dynamically loaded code. | |
874 | ||
875 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
876 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
877 | non-zero. | |
c906108c | 878 | |
c906108c SS |
879 | Upon success, returns a pointer to the objfile that was added. |
880 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f JB |
881 | static struct objfile * |
882 | symbol_file_add_with_addrs_or_offsets (char *name, int from_tty, | |
883 | struct section_addr_info *addrs, | |
884 | struct section_offsets *offsets, | |
885 | int num_offsets, | |
886 | int mainline, int flags) | |
c906108c SS |
887 | { |
888 | struct objfile *objfile; | |
889 | struct partial_symtab *psymtab; | |
5b5d99cf | 890 | char *debugfile; |
c906108c | 891 | bfd *abfd; |
5b5d99cf JB |
892 | struct section_addr_info orig_addrs; |
893 | ||
894 | if (addrs) | |
895 | orig_addrs = *addrs; | |
c906108c SS |
896 | |
897 | /* Open a bfd for the file, and give user a chance to burp if we'd be | |
898 | interactively wiping out any existing symbols. */ | |
899 | ||
900 | abfd = symfile_bfd_open (name); | |
901 | ||
902 | if ((have_full_symbols () || have_partial_symbols ()) | |
903 | && mainline | |
904 | && from_tty | |
905 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 906 | error ("Not confirmed."); |
c906108c | 907 | |
2df3850c | 908 | objfile = allocate_objfile (abfd, flags); |
c906108c SS |
909 | |
910 | /* If the objfile uses a mapped symbol file, and we have a psymtab for | |
911 | it, then skip reading any symbols at this time. */ | |
912 | ||
c5aa993b | 913 | if ((objfile->flags & OBJF_MAPPED) && (objfile->flags & OBJF_SYMS)) |
c906108c SS |
914 | { |
915 | /* We mapped in an existing symbol table file that already has had | |
c5aa993b JM |
916 | initial symbol reading performed, so we can skip that part. Notify |
917 | the user that instead of reading the symbols, they have been mapped. | |
918 | */ | |
c906108c SS |
919 | if (from_tty || info_verbose) |
920 | { | |
921 | printf_filtered ("Mapped symbols for %s...", name); | |
922 | wrap_here (""); | |
923 | gdb_flush (gdb_stdout); | |
924 | } | |
925 | init_entry_point_info (objfile); | |
926 | find_sym_fns (objfile); | |
927 | } | |
928 | else | |
929 | { | |
930 | /* We either created a new mapped symbol table, mapped an existing | |
c5aa993b JM |
931 | symbol table file which has not had initial symbol reading |
932 | performed, or need to read an unmapped symbol table. */ | |
c906108c SS |
933 | if (from_tty || info_verbose) |
934 | { | |
935 | if (pre_add_symbol_hook) | |
936 | pre_add_symbol_hook (name); | |
937 | else | |
938 | { | |
939 | printf_filtered ("Reading symbols from %s...", name); | |
940 | wrap_here (""); | |
941 | gdb_flush (gdb_stdout); | |
942 | } | |
943 | } | |
7904e09f JB |
944 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
945 | mainline, from_tty); | |
c906108c SS |
946 | } |
947 | ||
948 | /* We now have at least a partial symbol table. Check to see if the | |
949 | user requested that all symbols be read on initial access via either | |
950 | the gdb startup command line or on a per symbol file basis. Expand | |
951 | all partial symbol tables for this objfile if so. */ | |
952 | ||
2acceee2 | 953 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
954 | { |
955 | if (from_tty || info_verbose) | |
956 | { | |
957 | printf_filtered ("expanding to full symbols..."); | |
958 | wrap_here (""); | |
959 | gdb_flush (gdb_stdout); | |
960 | } | |
961 | ||
c5aa993b | 962 | for (psymtab = objfile->psymtabs; |
c906108c | 963 | psymtab != NULL; |
c5aa993b | 964 | psymtab = psymtab->next) |
c906108c SS |
965 | { |
966 | psymtab_to_symtab (psymtab); | |
967 | } | |
968 | } | |
969 | ||
5b5d99cf JB |
970 | debugfile = find_separate_debug_file (objfile); |
971 | if (debugfile) | |
972 | { | |
5b5d99cf JB |
973 | if (addrs != NULL) |
974 | { | |
975 | objfile->separate_debug_objfile | |
976 | = symbol_file_add (debugfile, from_tty, &orig_addrs, 0, flags); | |
977 | } | |
978 | else | |
979 | { | |
980 | objfile->separate_debug_objfile | |
981 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
982 | } | |
983 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
984 | = objfile; | |
985 | ||
986 | /* Put the separate debug object before the normal one, this is so that | |
987 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
988 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
989 | ||
990 | xfree (debugfile); | |
991 | } | |
992 | ||
cb3c37b2 JB |
993 | if (!have_partial_symbols () && !have_full_symbols ()) |
994 | { | |
995 | wrap_here (""); | |
996 | printf_filtered ("(no debugging symbols found)..."); | |
997 | wrap_here (""); | |
998 | } | |
999 | ||
c906108c SS |
1000 | if (from_tty || info_verbose) |
1001 | { | |
1002 | if (post_add_symbol_hook) | |
c5aa993b | 1003 | post_add_symbol_hook (); |
c906108c | 1004 | else |
c5aa993b JM |
1005 | { |
1006 | printf_filtered ("done.\n"); | |
c5aa993b | 1007 | } |
c906108c SS |
1008 | } |
1009 | ||
481d0f41 JB |
1010 | /* We print some messages regardless of whether 'from_tty || |
1011 | info_verbose' is true, so make sure they go out at the right | |
1012 | time. */ | |
1013 | gdb_flush (gdb_stdout); | |
1014 | ||
109f874e MS |
1015 | if (objfile->sf == NULL) |
1016 | return objfile; /* No symbols. */ | |
1017 | ||
c906108c SS |
1018 | new_symfile_objfile (objfile, mainline, from_tty); |
1019 | ||
11cf8741 JM |
1020 | if (target_new_objfile_hook) |
1021 | target_new_objfile_hook (objfile); | |
c906108c SS |
1022 | |
1023 | return (objfile); | |
1024 | } | |
1025 | ||
7904e09f JB |
1026 | |
1027 | /* Process a symbol file, as either the main file or as a dynamically | |
1028 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1029 | for details. */ | |
1030 | struct objfile * | |
1031 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
1032 | int mainline, int flags) | |
1033 | { | |
1034 | return symbol_file_add_with_addrs_or_offsets (name, from_tty, addrs, 0, 0, | |
1035 | mainline, flags); | |
1036 | } | |
1037 | ||
1038 | ||
d7db6da9 FN |
1039 | /* Call symbol_file_add() with default values and update whatever is |
1040 | affected by the loading of a new main(). | |
1041 | Used when the file is supplied in the gdb command line | |
1042 | and by some targets with special loading requirements. | |
1043 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1044 | argument for the switches that can only be specified in the symbol_file | |
1045 | command itself. */ | |
1adeb98a FN |
1046 | |
1047 | void | |
1048 | symbol_file_add_main (char *args, int from_tty) | |
1049 | { | |
d7db6da9 FN |
1050 | symbol_file_add_main_1 (args, from_tty, 0); |
1051 | } | |
1052 | ||
1053 | static void | |
1054 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1055 | { | |
1056 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1057 | ||
1058 | #ifdef HPUXHPPA | |
1059 | RESET_HP_UX_GLOBALS (); | |
1060 | #endif | |
1061 | ||
1062 | /* Getting new symbols may change our opinion about | |
1063 | what is frameless. */ | |
1064 | reinit_frame_cache (); | |
1065 | ||
1066 | set_initial_language (); | |
1adeb98a FN |
1067 | } |
1068 | ||
1069 | void | |
1070 | symbol_file_clear (int from_tty) | |
1071 | { | |
1072 | if ((have_full_symbols () || have_partial_symbols ()) | |
1073 | && from_tty | |
1074 | && !query ("Discard symbol table from `%s'? ", | |
1075 | symfile_objfile->name)) | |
1076 | error ("Not confirmed."); | |
1077 | free_all_objfiles (); | |
1078 | ||
1079 | /* solib descriptors may have handles to objfiles. Since their | |
1080 | storage has just been released, we'd better wipe the solib | |
1081 | descriptors as well. | |
1082 | */ | |
1083 | #if defined(SOLIB_RESTART) | |
1084 | SOLIB_RESTART (); | |
1085 | #endif | |
1086 | ||
1087 | symfile_objfile = NULL; | |
1088 | if (from_tty) | |
1089 | printf_unfiltered ("No symbol file now.\n"); | |
1090 | #ifdef HPUXHPPA | |
1091 | RESET_HP_UX_GLOBALS (); | |
1092 | #endif | |
1093 | } | |
1094 | ||
5b5d99cf JB |
1095 | static char * |
1096 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1097 | { | |
1098 | asection *sect; | |
1099 | bfd_size_type debuglink_size; | |
1100 | unsigned long crc32; | |
1101 | char *contents; | |
1102 | int crc_offset; | |
1103 | unsigned char *p; | |
1104 | ||
1105 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); | |
1106 | ||
1107 | if (sect == NULL) | |
1108 | return NULL; | |
1109 | ||
1110 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
1111 | ||
1112 | contents = xmalloc (debuglink_size); | |
1113 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1114 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1115 | ||
1116 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1117 | crc_offset = strlen (contents) + 1; | |
1118 | crc_offset = (crc_offset + 3) & ~3; | |
1119 | ||
1120 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
1121 | ||
1122 | *crc32_out = crc32; | |
1123 | return contents; | |
1124 | } | |
1125 | ||
1126 | static int | |
1127 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1128 | { | |
1129 | unsigned long file_crc = 0; | |
1130 | int fd; | |
1131 | char buffer[8*1024]; | |
1132 | int count; | |
1133 | ||
1134 | fd = open (name, O_RDONLY | O_BINARY); | |
1135 | if (fd < 0) | |
1136 | return 0; | |
1137 | ||
1138 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1139 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1140 | ||
1141 | close (fd); | |
1142 | ||
1143 | return crc == file_crc; | |
1144 | } | |
1145 | ||
1146 | static char *debug_file_directory = NULL; | |
1147 | ||
1148 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1149 | #define DEBUG_SUBDIRECTORY ".debug" | |
1150 | #endif | |
1151 | ||
1152 | static char * | |
1153 | find_separate_debug_file (struct objfile *objfile) | |
1154 | { | |
1155 | asection *sect; | |
1156 | char *basename; | |
1157 | char *dir; | |
1158 | char *debugfile; | |
1159 | char *name_copy; | |
1160 | bfd_size_type debuglink_size; | |
1161 | unsigned long crc32; | |
1162 | int i; | |
1163 | ||
1164 | basename = get_debug_link_info (objfile, &crc32); | |
1165 | ||
1166 | if (basename == NULL) | |
1167 | return NULL; | |
1168 | ||
1169 | dir = xstrdup (objfile->name); | |
1170 | ||
fe36c4f4 JB |
1171 | /* Strip off the final filename part, leaving the directory name, |
1172 | followed by a slash. Objfile names should always be absolute and | |
1173 | tilde-expanded, so there should always be a slash in there | |
1174 | somewhere. */ | |
5b5d99cf JB |
1175 | for (i = strlen(dir) - 1; i >= 0; i--) |
1176 | { | |
1177 | if (IS_DIR_SEPARATOR (dir[i])) | |
1178 | break; | |
1179 | } | |
fe36c4f4 | 1180 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf JB |
1181 | dir[i+1] = '\0'; |
1182 | ||
1183 | debugfile = alloca (strlen (debug_file_directory) + 1 | |
1184 | + strlen (dir) | |
1185 | + strlen (DEBUG_SUBDIRECTORY) | |
1186 | + strlen ("/") | |
1187 | + strlen (basename) | |
1188 | + 1); | |
1189 | ||
1190 | /* First try in the same directory as the original file. */ | |
1191 | strcpy (debugfile, dir); | |
1192 | strcat (debugfile, basename); | |
1193 | ||
1194 | if (separate_debug_file_exists (debugfile, crc32)) | |
1195 | { | |
1196 | xfree (basename); | |
1197 | xfree (dir); | |
1198 | return xstrdup (debugfile); | |
1199 | } | |
1200 | ||
1201 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ | |
1202 | strcpy (debugfile, dir); | |
1203 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1204 | strcat (debugfile, "/"); | |
1205 | strcat (debugfile, basename); | |
1206 | ||
1207 | if (separate_debug_file_exists (debugfile, crc32)) | |
1208 | { | |
1209 | xfree (basename); | |
1210 | xfree (dir); | |
1211 | return xstrdup (debugfile); | |
1212 | } | |
1213 | ||
1214 | /* Then try in the global debugfile directory. */ | |
1215 | strcpy (debugfile, debug_file_directory); | |
1216 | strcat (debugfile, "/"); | |
1217 | strcat (debugfile, dir); | |
5b5d99cf JB |
1218 | strcat (debugfile, basename); |
1219 | ||
1220 | if (separate_debug_file_exists (debugfile, crc32)) | |
1221 | { | |
1222 | xfree (basename); | |
1223 | xfree (dir); | |
1224 | return xstrdup (debugfile); | |
1225 | } | |
1226 | ||
1227 | xfree (basename); | |
1228 | xfree (dir); | |
1229 | return NULL; | |
1230 | } | |
1231 | ||
1232 | ||
c906108c SS |
1233 | /* This is the symbol-file command. Read the file, analyze its |
1234 | symbols, and add a struct symtab to a symtab list. The syntax of | |
1235 | the command is rather bizarre--(1) buildargv implements various | |
1236 | quoting conventions which are undocumented and have little or | |
1237 | nothing in common with the way things are quoted (or not quoted) | |
1238 | elsewhere in GDB, (2) options are used, which are not generally | |
1239 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
1240 | better), (3) the order of options matters, which is contrary to GNU | |
1241 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
1242 | /* Note: ezannoni 2000-04-17. This function used to have support for |
1243 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
1244 | (target.c) to get the address of the text segment from the target, | |
1245 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
1246 | |
1247 | void | |
fba45db2 | 1248 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
1249 | { |
1250 | char **argv; | |
1251 | char *name = NULL; | |
c906108c | 1252 | struct cleanup *cleanups; |
2df3850c | 1253 | int flags = OBJF_USERLOADED; |
c906108c SS |
1254 | |
1255 | dont_repeat (); | |
1256 | ||
1257 | if (args == NULL) | |
1258 | { | |
1adeb98a | 1259 | symbol_file_clear (from_tty); |
c906108c SS |
1260 | } |
1261 | else | |
1262 | { | |
1263 | if ((argv = buildargv (args)) == NULL) | |
1264 | { | |
1265 | nomem (0); | |
1266 | } | |
7a292a7a | 1267 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1268 | while (*argv != NULL) |
1269 | { | |
1270 | if (STREQ (*argv, "-mapped")) | |
4da95fc4 EZ |
1271 | flags |= OBJF_MAPPED; |
1272 | else | |
1273 | if (STREQ (*argv, "-readnow")) | |
2acceee2 | 1274 | flags |= OBJF_READNOW; |
4da95fc4 EZ |
1275 | else |
1276 | if (**argv == '-') | |
1277 | error ("unknown option `%s'", *argv); | |
c5aa993b | 1278 | else |
c5aa993b | 1279 | { |
4da95fc4 | 1280 | name = *argv; |
c906108c | 1281 | |
d7db6da9 | 1282 | symbol_file_add_main_1 (name, from_tty, flags); |
4da95fc4 | 1283 | } |
c906108c SS |
1284 | argv++; |
1285 | } | |
1286 | ||
1287 | if (name == NULL) | |
1288 | { | |
1289 | error ("no symbol file name was specified"); | |
1290 | } | |
c906108c SS |
1291 | do_cleanups (cleanups); |
1292 | } | |
1293 | } | |
1294 | ||
1295 | /* Set the initial language. | |
1296 | ||
1297 | A better solution would be to record the language in the psymtab when reading | |
1298 | partial symbols, and then use it (if known) to set the language. This would | |
1299 | be a win for formats that encode the language in an easily discoverable place, | |
1300 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1301 | named symbols or try to intuit the language from the specific type of stabs | |
1302 | we find, but we can't do that until later when we read in full symbols. | |
1303 | FIXME. */ | |
1304 | ||
1305 | static void | |
fba45db2 | 1306 | set_initial_language (void) |
c906108c SS |
1307 | { |
1308 | struct partial_symtab *pst; | |
c5aa993b | 1309 | enum language lang = language_unknown; |
c906108c SS |
1310 | |
1311 | pst = find_main_psymtab (); | |
1312 | if (pst != NULL) | |
1313 | { | |
c5aa993b | 1314 | if (pst->filename != NULL) |
c906108c | 1315 | { |
c5aa993b JM |
1316 | lang = deduce_language_from_filename (pst->filename); |
1317 | } | |
c906108c SS |
1318 | if (lang == language_unknown) |
1319 | { | |
c5aa993b JM |
1320 | /* Make C the default language */ |
1321 | lang = language_c; | |
c906108c SS |
1322 | } |
1323 | set_language (lang); | |
1324 | expected_language = current_language; /* Don't warn the user */ | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1329 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1330 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1331 | In case of trouble, error() is called. */ | |
1332 | ||
1333 | bfd * | |
fba45db2 | 1334 | symfile_bfd_open (char *name) |
c906108c SS |
1335 | { |
1336 | bfd *sym_bfd; | |
1337 | int desc; | |
1338 | char *absolute_name; | |
1339 | ||
1340 | ||
1341 | ||
1342 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1343 | ||
1344 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1345 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1346 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1347 | if (desc < 0) |
1348 | { | |
1349 | char *exename = alloca (strlen (name) + 5); | |
1350 | strcat (strcpy (exename, name), ".exe"); | |
1351 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1352 | 0, &absolute_name); |
c906108c SS |
1353 | } |
1354 | #endif | |
1355 | if (desc < 0) | |
1356 | { | |
b8c9b27d | 1357 | make_cleanup (xfree, name); |
c906108c SS |
1358 | perror_with_name (name); |
1359 | } | |
b8c9b27d | 1360 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1361 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1362 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1363 | |
1364 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1365 | if (!sym_bfd) | |
1366 | { | |
1367 | close (desc); | |
b8c9b27d | 1368 | make_cleanup (xfree, name); |
c906108c SS |
1369 | error ("\"%s\": can't open to read symbols: %s.", name, |
1370 | bfd_errmsg (bfd_get_error ())); | |
1371 | } | |
81a9a963 | 1372 | sym_bfd->cacheable = 1; |
c906108c SS |
1373 | |
1374 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1375 | { | |
1376 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1377 | on error it does not free all the storage associated with the |
1378 | bfd). */ | |
c906108c | 1379 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1380 | make_cleanup (xfree, name); |
c906108c SS |
1381 | error ("\"%s\": can't read symbols: %s.", name, |
1382 | bfd_errmsg (bfd_get_error ())); | |
1383 | } | |
1384 | return (sym_bfd); | |
1385 | } | |
1386 | ||
0e931cf0 JB |
1387 | /* Return the section index for the given section name. Return -1 if |
1388 | the section was not found. */ | |
1389 | int | |
1390 | get_section_index (struct objfile *objfile, char *section_name) | |
1391 | { | |
1392 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1393 | if (sect) | |
1394 | return sect->index; | |
1395 | else | |
1396 | return -1; | |
1397 | } | |
1398 | ||
c906108c SS |
1399 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1400 | startup by the _initialize routine in each object file format reader, | |
1401 | to register information about each format the the reader is prepared | |
1402 | to handle. */ | |
1403 | ||
1404 | void | |
fba45db2 | 1405 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1406 | { |
1407 | sf->next = symtab_fns; | |
1408 | symtab_fns = sf; | |
1409 | } | |
1410 | ||
1411 | ||
1412 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1413 | returns or calls error(). The result is an initialized struct sym_fns | |
1414 | in the objfile structure, that contains cached information about the | |
1415 | symbol file. */ | |
1416 | ||
1417 | static void | |
fba45db2 | 1418 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1419 | { |
1420 | struct sym_fns *sf; | |
c5aa993b JM |
1421 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1422 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1423 | |
75245b24 MS |
1424 | if (our_flavour == bfd_target_srec_flavour |
1425 | || our_flavour == bfd_target_ihex_flavour | |
1426 | || our_flavour == bfd_target_tekhex_flavour) | |
1427 | return; /* No symbols. */ | |
1428 | ||
c906108c SS |
1429 | /* Special kludge for apollo. See dstread.c. */ |
1430 | if (STREQN (our_target, "apollo", 6)) | |
c5aa993b | 1431 | our_flavour = (enum bfd_flavour) -2; |
c906108c | 1432 | |
c5aa993b | 1433 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1434 | { |
c5aa993b | 1435 | if (our_flavour == sf->sym_flavour) |
c906108c | 1436 | { |
c5aa993b | 1437 | objfile->sf = sf; |
c906108c SS |
1438 | return; |
1439 | } | |
1440 | } | |
1441 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1442 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1443 | } |
1444 | \f | |
1445 | /* This function runs the load command of our current target. */ | |
1446 | ||
1447 | static void | |
fba45db2 | 1448 | load_command (char *arg, int from_tty) |
c906108c SS |
1449 | { |
1450 | if (arg == NULL) | |
1451 | arg = get_exec_file (1); | |
1452 | target_load (arg, from_tty); | |
2889e661 JB |
1453 | |
1454 | /* After re-loading the executable, we don't really know which | |
1455 | overlays are mapped any more. */ | |
1456 | overlay_cache_invalid = 1; | |
c906108c SS |
1457 | } |
1458 | ||
1459 | /* This version of "load" should be usable for any target. Currently | |
1460 | it is just used for remote targets, not inftarg.c or core files, | |
1461 | on the theory that only in that case is it useful. | |
1462 | ||
1463 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1464 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1465 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1466 | performance compares. */ | |
917317f4 JM |
1467 | |
1468 | static int download_write_size = 512; | |
1469 | static int validate_download = 0; | |
1470 | ||
e4f9b4d5 MS |
1471 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1472 | ||
1473 | static void | |
1474 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1475 | { | |
1476 | bfd_size_type *sum = data; | |
1477 | ||
1478 | *sum += bfd_get_section_size_before_reloc (asec); | |
1479 | } | |
1480 | ||
1481 | /* Opaque data for load_section_callback. */ | |
1482 | struct load_section_data { | |
1483 | unsigned long load_offset; | |
1484 | unsigned long write_count; | |
1485 | unsigned long data_count; | |
1486 | bfd_size_type total_size; | |
1487 | }; | |
1488 | ||
1489 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1490 | ||
1491 | static void | |
1492 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1493 | { | |
1494 | struct load_section_data *args = data; | |
1495 | ||
1496 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1497 | { | |
1498 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1499 | if (size > 0) | |
1500 | { | |
1501 | char *buffer; | |
1502 | struct cleanup *old_chain; | |
1503 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1504 | bfd_size_type block_size; | |
1505 | int err; | |
1506 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1507 | bfd_size_type sent; | |
1508 | ||
1509 | if (download_write_size > 0 && size > download_write_size) | |
1510 | block_size = download_write_size; | |
1511 | else | |
1512 | block_size = size; | |
1513 | ||
1514 | buffer = xmalloc (size); | |
1515 | old_chain = make_cleanup (xfree, buffer); | |
1516 | ||
1517 | /* Is this really necessary? I guess it gives the user something | |
1518 | to look at during a long download. */ | |
e4f9b4d5 MS |
1519 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1520 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1521 | |
1522 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1523 | ||
1524 | sent = 0; | |
1525 | do | |
1526 | { | |
1527 | int len; | |
1528 | bfd_size_type this_transfer = size - sent; | |
1529 | ||
1530 | if (this_transfer >= block_size) | |
1531 | this_transfer = block_size; | |
1532 | len = target_write_memory_partial (lma, buffer, | |
1533 | this_transfer, &err); | |
1534 | if (err) | |
1535 | break; | |
1536 | if (validate_download) | |
1537 | { | |
1538 | /* Broken memories and broken monitors manifest | |
1539 | themselves here when bring new computers to | |
1540 | life. This doubles already slow downloads. */ | |
1541 | /* NOTE: cagney/1999-10-18: A more efficient | |
1542 | implementation might add a verify_memory() | |
1543 | method to the target vector and then use | |
1544 | that. remote.c could implement that method | |
1545 | using the ``qCRC'' packet. */ | |
1546 | char *check = xmalloc (len); | |
1547 | struct cleanup *verify_cleanups = | |
1548 | make_cleanup (xfree, check); | |
1549 | ||
1550 | if (target_read_memory (lma, check, len) != 0) | |
1551 | error ("Download verify read failed at 0x%s", | |
1552 | paddr (lma)); | |
1553 | if (memcmp (buffer, check, len) != 0) | |
1554 | error ("Download verify compare failed at 0x%s", | |
1555 | paddr (lma)); | |
1556 | do_cleanups (verify_cleanups); | |
1557 | } | |
1558 | args->data_count += len; | |
1559 | lma += len; | |
1560 | buffer += len; | |
1561 | args->write_count += 1; | |
1562 | sent += len; | |
1563 | if (quit_flag | |
1564 | || (ui_load_progress_hook != NULL | |
1565 | && ui_load_progress_hook (sect_name, sent))) | |
1566 | error ("Canceled the download"); | |
1567 | ||
1568 | if (show_load_progress != NULL) | |
1569 | show_load_progress (sect_name, sent, size, | |
1570 | args->data_count, args->total_size); | |
1571 | } | |
1572 | while (sent < size); | |
1573 | ||
1574 | if (err != 0) | |
1575 | error ("Memory access error while loading section %s.", sect_name); | |
1576 | ||
1577 | do_cleanups (old_chain); | |
1578 | } | |
1579 | } | |
1580 | } | |
1581 | ||
c906108c | 1582 | void |
917317f4 | 1583 | generic_load (char *args, int from_tty) |
c906108c | 1584 | { |
c906108c SS |
1585 | asection *s; |
1586 | bfd *loadfile_bfd; | |
1587 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1588 | char *filename; |
1589 | struct cleanup *old_cleanups; | |
1590 | char *offptr; | |
e4f9b4d5 MS |
1591 | struct load_section_data cbdata; |
1592 | CORE_ADDR entry; | |
1593 | ||
1594 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1595 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1596 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1597 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1598 | |
1599 | /* Parse the input argument - the user can specify a load offset as | |
1600 | a second argument. */ | |
1601 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1602 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1603 | strcpy (filename, args); |
1604 | offptr = strchr (filename, ' '); | |
1605 | if (offptr != NULL) | |
1606 | { | |
1607 | char *endptr; | |
ba5f2f8a | 1608 | |
e4f9b4d5 | 1609 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1610 | if (offptr == endptr) |
1611 | error ("Invalid download offset:%s\n", offptr); | |
1612 | *offptr = '\0'; | |
1613 | } | |
c906108c | 1614 | else |
e4f9b4d5 | 1615 | cbdata.load_offset = 0; |
c906108c | 1616 | |
917317f4 | 1617 | /* Open the file for loading. */ |
c906108c SS |
1618 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1619 | if (loadfile_bfd == NULL) | |
1620 | { | |
1621 | perror_with_name (filename); | |
1622 | return; | |
1623 | } | |
917317f4 | 1624 | |
c906108c SS |
1625 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1626 | on error it does not free all the storage associated with the | |
1627 | bfd). */ | |
5c65bbb6 | 1628 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1629 | |
c5aa993b | 1630 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1631 | { |
1632 | error ("\"%s\" is not an object file: %s", filename, | |
1633 | bfd_errmsg (bfd_get_error ())); | |
1634 | } | |
c5aa993b | 1635 | |
e4f9b4d5 MS |
1636 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
1637 | (void *) &cbdata.total_size); | |
c2d11a7d | 1638 | |
c906108c SS |
1639 | start_time = time (NULL); |
1640 | ||
e4f9b4d5 | 1641 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1642 | |
1643 | end_time = time (NULL); | |
ba5f2f8a | 1644 | |
e4f9b4d5 | 1645 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1646 | ui_out_text (uiout, "Start address "); |
1647 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1648 | ui_out_text (uiout, ", load size "); | |
1649 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1650 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1651 | /* We were doing this in remote-mips.c, I suspect it is right |
1652 | for other targets too. */ | |
1653 | write_pc (entry); | |
c906108c | 1654 | |
7ca9f392 AC |
1655 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1656 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1657 | was commented out), making the call confuses GDB if more than one | |
1658 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
1659 | others don't (or didn't - perhaphs they have all been deleted). */ | |
c906108c | 1660 | |
e4f9b4d5 MS |
1661 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
1662 | cbdata.write_count, end_time - start_time); | |
c906108c SS |
1663 | |
1664 | do_cleanups (old_cleanups); | |
1665 | } | |
1666 | ||
1667 | /* Report how fast the transfer went. */ | |
1668 | ||
917317f4 JM |
1669 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1670 | replaced by print_transfer_performance (with a very different | |
1671 | function signature). */ | |
1672 | ||
c906108c | 1673 | void |
fba45db2 KB |
1674 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1675 | time_t end_time) | |
c906108c | 1676 | { |
ba5f2f8a MS |
1677 | print_transfer_performance (gdb_stdout, data_count, |
1678 | end_time - start_time, 0); | |
917317f4 JM |
1679 | } |
1680 | ||
1681 | void | |
d9fcf2fb | 1682 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1683 | unsigned long data_count, |
1684 | unsigned long write_count, | |
1685 | unsigned long time_count) | |
1686 | { | |
8b93c638 JM |
1687 | ui_out_text (uiout, "Transfer rate: "); |
1688 | if (time_count > 0) | |
1689 | { | |
ba5f2f8a | 1690 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1691 | (data_count * 8) / time_count); |
1692 | ui_out_text (uiout, " bits/sec"); | |
1693 | } | |
1694 | else | |
1695 | { | |
ba5f2f8a | 1696 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
8b93c638 JM |
1697 | ui_out_text (uiout, " bits in <1 sec"); |
1698 | } | |
1699 | if (write_count > 0) | |
1700 | { | |
1701 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1702 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1703 | ui_out_text (uiout, " bytes/write"); |
1704 | } | |
1705 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1706 | } |
1707 | ||
1708 | /* This function allows the addition of incrementally linked object files. | |
1709 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1710 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1711 | special case syntax for the rombug target (Rombug is the boot | |
1712 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1713 | rombug case, the user doesn't need to supply a text address, | |
1714 | instead a call to target_link() (in target.c) would supply the | |
1715 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c SS |
1716 | |
1717 | /* ARGSUSED */ | |
1718 | static void | |
fba45db2 | 1719 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1720 | { |
db162d44 | 1721 | char *filename = NULL; |
2df3850c | 1722 | int flags = OBJF_USERLOADED; |
c906108c | 1723 | char *arg; |
2acceee2 | 1724 | int expecting_option = 0; |
db162d44 | 1725 | int section_index = 0; |
2acceee2 JM |
1726 | int argcnt = 0; |
1727 | int sec_num = 0; | |
1728 | int i; | |
db162d44 EZ |
1729 | int expecting_sec_name = 0; |
1730 | int expecting_sec_addr = 0; | |
1731 | ||
2acceee2 JM |
1732 | struct |
1733 | { | |
2acceee2 JM |
1734 | char *name; |
1735 | char *value; | |
db162d44 EZ |
1736 | } sect_opts[SECT_OFF_MAX]; |
1737 | ||
2acceee2 | 1738 | struct section_addr_info section_addrs; |
3017564a | 1739 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1740 | |
c906108c SS |
1741 | dont_repeat (); |
1742 | ||
1743 | if (args == NULL) | |
db162d44 | 1744 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1745 | |
1746 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1747 | args = xstrdup (args); |
c906108c | 1748 | |
2acceee2 JM |
1749 | /* Ensure section_addrs is initialized */ |
1750 | memset (§ion_addrs, 0, sizeof (section_addrs)); | |
1751 | ||
2acceee2 | 1752 | while (*args != '\000') |
c906108c | 1753 | { |
db162d44 | 1754 | /* Any leading spaces? */ |
c5aa993b | 1755 | while (isspace (*args)) |
db162d44 EZ |
1756 | args++; |
1757 | ||
1758 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1759 | arg = args; |
db162d44 EZ |
1760 | |
1761 | /* Move args pointer over the argument. */ | |
c5aa993b | 1762 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1763 | args++; |
1764 | ||
1765 | /* If there are more arguments, terminate arg and | |
1766 | proceed past it. */ | |
c906108c | 1767 | if (*args != '\000') |
db162d44 EZ |
1768 | *args++ = '\000'; |
1769 | ||
1770 | /* Now process the argument. */ | |
1771 | if (argcnt == 0) | |
c906108c | 1772 | { |
db162d44 EZ |
1773 | /* The first argument is the file name. */ |
1774 | filename = tilde_expand (arg); | |
3017564a | 1775 | make_cleanup (xfree, filename); |
c906108c | 1776 | } |
db162d44 | 1777 | else |
7a78ae4e ND |
1778 | if (argcnt == 1) |
1779 | { | |
1780 | /* The second argument is always the text address at which | |
1781 | to load the program. */ | |
1782 | sect_opts[section_index].name = ".text"; | |
1783 | sect_opts[section_index].value = arg; | |
1784 | section_index++; | |
1785 | } | |
1786 | else | |
1787 | { | |
1788 | /* It's an option (starting with '-') or it's an argument | |
1789 | to an option */ | |
1790 | ||
1791 | if (*arg == '-') | |
1792 | { | |
1793 | if (strcmp (arg, "-mapped") == 0) | |
1794 | flags |= OBJF_MAPPED; | |
1795 | else | |
1796 | if (strcmp (arg, "-readnow") == 0) | |
1797 | flags |= OBJF_READNOW; | |
1798 | else | |
1799 | if (strcmp (arg, "-s") == 0) | |
1800 | { | |
1801 | if (section_index >= SECT_OFF_MAX) | |
1802 | error ("Too many sections specified."); | |
1803 | expecting_sec_name = 1; | |
1804 | expecting_sec_addr = 1; | |
1805 | } | |
1806 | } | |
1807 | else | |
1808 | { | |
1809 | if (expecting_sec_name) | |
db162d44 | 1810 | { |
7a78ae4e ND |
1811 | sect_opts[section_index].name = arg; |
1812 | expecting_sec_name = 0; | |
db162d44 EZ |
1813 | } |
1814 | else | |
7a78ae4e ND |
1815 | if (expecting_sec_addr) |
1816 | { | |
1817 | sect_opts[section_index].value = arg; | |
1818 | expecting_sec_addr = 0; | |
1819 | section_index++; | |
1820 | } | |
1821 | else | |
1822 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1823 | } | |
1824 | } | |
db162d44 | 1825 | argcnt++; |
c906108c | 1826 | } |
c906108c | 1827 | |
db162d44 EZ |
1828 | /* Print the prompt for the query below. And save the arguments into |
1829 | a sect_addr_info structure to be passed around to other | |
1830 | functions. We have to split this up into separate print | |
1831 | statements because local_hex_string returns a local static | |
1832 | string. */ | |
2acceee2 | 1833 | |
db162d44 EZ |
1834 | printf_filtered ("add symbol table from file \"%s\" at\n", filename); |
1835 | for (i = 0; i < section_index; i++) | |
c906108c | 1836 | { |
db162d44 EZ |
1837 | CORE_ADDR addr; |
1838 | char *val = sect_opts[i].value; | |
1839 | char *sec = sect_opts[i].name; | |
1840 | ||
1841 | val = sect_opts[i].value; | |
1842 | if (val[0] == '0' && val[1] == 'x') | |
1843 | addr = strtoul (val+2, NULL, 16); | |
1844 | else | |
1845 | addr = strtoul (val, NULL, 10); | |
1846 | ||
db162d44 EZ |
1847 | /* Here we store the section offsets in the order they were |
1848 | entered on the command line. */ | |
1849 | section_addrs.other[sec_num].name = sec; | |
1850 | section_addrs.other[sec_num].addr = addr; | |
1851 | printf_filtered ("\t%s_addr = %s\n", | |
1852 | sec, | |
1853 | local_hex_string ((unsigned long)addr)); | |
1854 | sec_num++; | |
1855 | ||
1856 | /* The object's sections are initialized when a | |
1857 | call is made to build_objfile_section_table (objfile). | |
1858 | This happens in reread_symbols. | |
1859 | At this point, we don't know what file type this is, | |
1860 | so we can't determine what section names are valid. */ | |
2acceee2 | 1861 | } |
db162d44 | 1862 | |
2acceee2 | 1863 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1864 | error ("Not confirmed."); |
1865 | ||
db162d44 | 1866 | symbol_file_add (filename, from_tty, §ion_addrs, 0, flags); |
c906108c SS |
1867 | |
1868 | /* Getting new symbols may change our opinion about what is | |
1869 | frameless. */ | |
1870 | reinit_frame_cache (); | |
db162d44 | 1871 | do_cleanups (my_cleanups); |
c906108c SS |
1872 | } |
1873 | \f | |
1874 | static void | |
fba45db2 | 1875 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1876 | { |
1877 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1878 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1879 | #else | |
1880 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1881 | #endif |
c906108c SS |
1882 | } |
1883 | \f | |
1884 | /* Re-read symbols if a symbol-file has changed. */ | |
1885 | void | |
fba45db2 | 1886 | reread_symbols (void) |
c906108c SS |
1887 | { |
1888 | struct objfile *objfile; | |
1889 | long new_modtime; | |
1890 | int reread_one = 0; | |
1891 | struct stat new_statbuf; | |
1892 | int res; | |
1893 | ||
1894 | /* With the addition of shared libraries, this should be modified, | |
1895 | the load time should be saved in the partial symbol tables, since | |
1896 | different tables may come from different source files. FIXME. | |
1897 | This routine should then walk down each partial symbol table | |
1898 | and see if the symbol table that it originates from has been changed */ | |
1899 | ||
c5aa993b JM |
1900 | for (objfile = object_files; objfile; objfile = objfile->next) |
1901 | { | |
1902 | if (objfile->obfd) | |
1903 | { | |
c906108c | 1904 | #ifdef IBM6000_TARGET |
c5aa993b JM |
1905 | /* If this object is from a shared library, then you should |
1906 | stat on the library name, not member name. */ | |
c906108c | 1907 | |
c5aa993b JM |
1908 | if (objfile->obfd->my_archive) |
1909 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1910 | else | |
c906108c | 1911 | #endif |
c5aa993b JM |
1912 | res = stat (objfile->name, &new_statbuf); |
1913 | if (res != 0) | |
c906108c | 1914 | { |
c5aa993b JM |
1915 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
1916 | printf_filtered ("`%s' has disappeared; keeping its symbols.\n", | |
1917 | objfile->name); | |
1918 | continue; | |
c906108c | 1919 | } |
c5aa993b JM |
1920 | new_modtime = new_statbuf.st_mtime; |
1921 | if (new_modtime != objfile->mtime) | |
c906108c | 1922 | { |
c5aa993b JM |
1923 | struct cleanup *old_cleanups; |
1924 | struct section_offsets *offsets; | |
1925 | int num_offsets; | |
c5aa993b JM |
1926 | char *obfd_filename; |
1927 | ||
1928 | printf_filtered ("`%s' has changed; re-reading symbols.\n", | |
1929 | objfile->name); | |
1930 | ||
1931 | /* There are various functions like symbol_file_add, | |
1932 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1933 | appear to do what we want. But they have various other | |
1934 | effects which we *don't* want. So we just do stuff | |
1935 | ourselves. We don't worry about mapped files (for one thing, | |
1936 | any mapped file will be out of date). */ | |
1937 | ||
1938 | /* If we get an error, blow away this objfile (not sure if | |
1939 | that is the correct response for things like shared | |
1940 | libraries). */ | |
74b7792f | 1941 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1942 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1943 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1944 | |
1945 | /* Clean up any state BFD has sitting around. We don't need | |
1946 | to close the descriptor but BFD lacks a way of closing the | |
1947 | BFD without closing the descriptor. */ | |
1948 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1949 | if (!bfd_close (objfile->obfd)) | |
1950 | error ("Can't close BFD for %s: %s", objfile->name, | |
1951 | bfd_errmsg (bfd_get_error ())); | |
1952 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1953 | if (objfile->obfd == NULL) | |
1954 | error ("Can't open %s to read symbols.", objfile->name); | |
1955 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1956 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1957 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1958 | bfd_errmsg (bfd_get_error ())); | |
1959 | ||
1960 | /* Save the offsets, we will nuke them with the rest of the | |
1961 | psymbol_obstack. */ | |
1962 | num_offsets = objfile->num_sections; | |
d4f3574e SS |
1963 | offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1964 | memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
1965 | |
1966 | /* Nuke all the state that we will re-read. Much of the following | |
1967 | code which sets things to NULL really is necessary to tell | |
1968 | other parts of GDB that there is nothing currently there. */ | |
1969 | ||
1970 | /* FIXME: Do we have to free a whole linked list, or is this | |
1971 | enough? */ | |
1972 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1973 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1974 | memset (&objfile->global_psymbols, 0, |
1975 | sizeof (objfile->global_psymbols)); | |
1976 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1977 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1978 | memset (&objfile->static_psymbols, 0, |
1979 | sizeof (objfile->static_psymbols)); | |
1980 | ||
1981 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1982 | bcache_xfree (objfile->psymbol_cache); |
1983 | objfile->psymbol_cache = bcache_xmalloc (); | |
1984 | bcache_xfree (objfile->macro_cache); | |
1985 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b JM |
1986 | obstack_free (&objfile->psymbol_obstack, 0); |
1987 | obstack_free (&objfile->symbol_obstack, 0); | |
1988 | obstack_free (&objfile->type_obstack, 0); | |
1989 | objfile->sections = NULL; | |
1990 | objfile->symtabs = NULL; | |
1991 | objfile->psymtabs = NULL; | |
1992 | objfile->free_psymtabs = NULL; | |
1993 | objfile->msymbols = NULL; | |
1994 | objfile->minimal_symbol_count = 0; | |
0a83117a MS |
1995 | memset (&objfile->msymbol_hash, 0, |
1996 | sizeof (objfile->msymbol_hash)); | |
1997 | memset (&objfile->msymbol_demangled_hash, 0, | |
1998 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b JM |
1999 | objfile->fundamental_types = NULL; |
2000 | if (objfile->sf != NULL) | |
2001 | { | |
2002 | (*objfile->sf->sym_finish) (objfile); | |
2003 | } | |
2004 | ||
2005 | /* We never make this a mapped file. */ | |
2006 | objfile->md = NULL; | |
2007 | /* obstack_specify_allocation also initializes the obstack so | |
2008 | it is empty. */ | |
af5f3db6 AC |
2009 | objfile->psymbol_cache = bcache_xmalloc (); |
2010 | objfile->macro_cache = bcache_xmalloc (); | |
c5aa993b | 2011 | obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, |
b8c9b27d | 2012 | xmalloc, xfree); |
c5aa993b | 2013 | obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, |
b8c9b27d | 2014 | xmalloc, xfree); |
c5aa993b | 2015 | obstack_specify_allocation (&objfile->type_obstack, 0, 0, |
b8c9b27d | 2016 | xmalloc, xfree); |
c5aa993b JM |
2017 | if (build_objfile_section_table (objfile)) |
2018 | { | |
2019 | error ("Can't find the file sections in `%s': %s", | |
2020 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2021 | } | |
15831452 | 2022 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2023 | |
2024 | /* We use the same section offsets as from last time. I'm not | |
2025 | sure whether that is always correct for shared libraries. */ | |
2026 | objfile->section_offsets = (struct section_offsets *) | |
d4f3574e SS |
2027 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
2028 | memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS); | |
c5aa993b JM |
2029 | objfile->num_sections = num_offsets; |
2030 | ||
2031 | /* What the hell is sym_new_init for, anyway? The concept of | |
2032 | distinguishing between the main file and additional files | |
2033 | in this way seems rather dubious. */ | |
2034 | if (objfile == symfile_objfile) | |
2035 | { | |
2036 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 2037 | #ifdef HPUXHPPA |
c5aa993b | 2038 | RESET_HP_UX_GLOBALS (); |
c906108c | 2039 | #endif |
c5aa993b JM |
2040 | } |
2041 | ||
2042 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2043 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2044 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2045 | zero is OK since dbxread.c also does what it needs to do if | |
2046 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2047 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2048 | if (!have_partial_symbols () && !have_full_symbols ()) |
2049 | { | |
2050 | wrap_here (""); | |
2051 | printf_filtered ("(no debugging symbols found)\n"); | |
2052 | wrap_here (""); | |
2053 | } | |
2054 | objfile->flags |= OBJF_SYMS; | |
2055 | ||
2056 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2057 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2058 | |
c5aa993b JM |
2059 | /* Getting new symbols may change our opinion about what is |
2060 | frameless. */ | |
c906108c | 2061 | |
c5aa993b | 2062 | reinit_frame_cache (); |
c906108c | 2063 | |
c5aa993b JM |
2064 | /* Discard cleanups as symbol reading was successful. */ |
2065 | discard_cleanups (old_cleanups); | |
c906108c | 2066 | |
c5aa993b JM |
2067 | /* If the mtime has changed between the time we set new_modtime |
2068 | and now, we *want* this to be out of date, so don't call stat | |
2069 | again now. */ | |
2070 | objfile->mtime = new_modtime; | |
2071 | reread_one = 1; | |
c906108c | 2072 | |
c5aa993b | 2073 | /* Call this after reading in a new symbol table to give target |
38c2ef12 | 2074 | dependent code a crack at the new symbols. For instance, this |
c5aa993b JM |
2075 | could be used to update the values of target-specific symbols GDB |
2076 | needs to keep track of (such as _sigtramp, or whatever). */ | |
c906108c | 2077 | |
c5aa993b | 2078 | TARGET_SYMFILE_POSTREAD (objfile); |
5b5d99cf JB |
2079 | |
2080 | reread_separate_symbols (objfile); | |
c5aa993b | 2081 | } |
c906108c SS |
2082 | } |
2083 | } | |
c906108c SS |
2084 | |
2085 | if (reread_one) | |
2086 | clear_symtab_users (); | |
2087 | } | |
5b5d99cf JB |
2088 | |
2089 | ||
2090 | /* Handle separate debug info for OBJFILE, which has just been | |
2091 | re-read: | |
2092 | - If we had separate debug info before, but now we don't, get rid | |
2093 | of the separated objfile. | |
2094 | - If we didn't have separated debug info before, but now we do, | |
2095 | read in the new separated debug info file. | |
2096 | - If the debug link points to a different file, toss the old one | |
2097 | and read the new one. | |
2098 | This function does *not* handle the case where objfile is still | |
2099 | using the same separate debug info file, but that file's timestamp | |
2100 | has changed. That case should be handled by the loop in | |
2101 | reread_symbols already. */ | |
2102 | static void | |
2103 | reread_separate_symbols (struct objfile *objfile) | |
2104 | { | |
2105 | char *debug_file; | |
2106 | unsigned long crc32; | |
2107 | ||
2108 | /* Does the updated objfile's debug info live in a | |
2109 | separate file? */ | |
2110 | debug_file = find_separate_debug_file (objfile); | |
2111 | ||
2112 | if (objfile->separate_debug_objfile) | |
2113 | { | |
2114 | /* There are two cases where we need to get rid of | |
2115 | the old separated debug info objfile: | |
2116 | - if the new primary objfile doesn't have | |
2117 | separated debug info, or | |
2118 | - if the new primary objfile has separate debug | |
2119 | info, but it's under a different filename. | |
2120 | ||
2121 | If the old and new objfiles both have separate | |
2122 | debug info, under the same filename, then we're | |
2123 | okay --- if the separated file's contents have | |
2124 | changed, we will have caught that when we | |
2125 | visited it in this function's outermost | |
2126 | loop. */ | |
2127 | if (! debug_file | |
2128 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2129 | free_objfile (objfile->separate_debug_objfile); | |
2130 | } | |
2131 | ||
2132 | /* If the new objfile has separate debug info, and we | |
2133 | haven't loaded it already, do so now. */ | |
2134 | if (debug_file | |
2135 | && ! objfile->separate_debug_objfile) | |
2136 | { | |
2137 | /* Use the same section offset table as objfile itself. | |
2138 | Preserve the flags from objfile that make sense. */ | |
2139 | objfile->separate_debug_objfile | |
2140 | = (symbol_file_add_with_addrs_or_offsets | |
2141 | (debug_file, | |
2142 | info_verbose, /* from_tty: Don't override the default. */ | |
2143 | 0, /* No addr table. */ | |
2144 | objfile->section_offsets, objfile->num_sections, | |
2145 | 0, /* Not mainline. See comments about this above. */ | |
2146 | objfile->flags & (OBJF_MAPPED | OBJF_REORDERED | |
2147 | | OBJF_SHARED | OBJF_READNOW | |
2148 | | OBJF_USERLOADED))); | |
2149 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2150 | = objfile; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | ||
c906108c SS |
2155 | \f |
2156 | ||
c5aa993b JM |
2157 | |
2158 | typedef struct | |
2159 | { | |
2160 | char *ext; | |
c906108c | 2161 | enum language lang; |
c5aa993b JM |
2162 | } |
2163 | filename_language; | |
c906108c | 2164 | |
c5aa993b | 2165 | static filename_language *filename_language_table; |
c906108c SS |
2166 | static int fl_table_size, fl_table_next; |
2167 | ||
2168 | static void | |
fba45db2 | 2169 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2170 | { |
2171 | if (fl_table_next >= fl_table_size) | |
2172 | { | |
2173 | fl_table_size += 10; | |
25bf3106 PM |
2174 | filename_language_table = |
2175 | xrealloc (filename_language_table, | |
2176 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2177 | } |
2178 | ||
4fcf66da | 2179 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2180 | filename_language_table[fl_table_next].lang = lang; |
2181 | fl_table_next++; | |
2182 | } | |
2183 | ||
2184 | static char *ext_args; | |
2185 | ||
2186 | static void | |
fba45db2 | 2187 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2188 | { |
2189 | int i; | |
2190 | char *cp = ext_args; | |
2191 | enum language lang; | |
2192 | ||
2193 | /* First arg is filename extension, starting with '.' */ | |
2194 | if (*cp != '.') | |
2195 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
2196 | ||
2197 | /* Find end of first arg. */ | |
c5aa993b | 2198 | while (*cp && !isspace (*cp)) |
c906108c SS |
2199 | cp++; |
2200 | ||
2201 | if (*cp == '\0') | |
2202 | error ("'%s': two arguments required -- filename extension and language", | |
2203 | ext_args); | |
2204 | ||
2205 | /* Null-terminate first arg */ | |
c5aa993b | 2206 | *cp++ = '\0'; |
c906108c SS |
2207 | |
2208 | /* Find beginning of second arg, which should be a source language. */ | |
2209 | while (*cp && isspace (*cp)) | |
2210 | cp++; | |
2211 | ||
2212 | if (*cp == '\0') | |
2213 | error ("'%s': two arguments required -- filename extension and language", | |
2214 | ext_args); | |
2215 | ||
2216 | /* Lookup the language from among those we know. */ | |
2217 | lang = language_enum (cp); | |
2218 | ||
2219 | /* Now lookup the filename extension: do we already know it? */ | |
2220 | for (i = 0; i < fl_table_next; i++) | |
2221 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2222 | break; | |
2223 | ||
2224 | if (i >= fl_table_next) | |
2225 | { | |
2226 | /* new file extension */ | |
2227 | add_filename_language (ext_args, lang); | |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | /* redefining a previously known filename extension */ | |
2232 | ||
2233 | /* if (from_tty) */ | |
2234 | /* query ("Really make files of type %s '%s'?", */ | |
2235 | /* ext_args, language_str (lang)); */ | |
2236 | ||
b8c9b27d | 2237 | xfree (filename_language_table[i].ext); |
4fcf66da | 2238 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2239 | filename_language_table[i].lang = lang; |
2240 | } | |
2241 | } | |
2242 | ||
2243 | static void | |
fba45db2 | 2244 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2245 | { |
2246 | int i; | |
2247 | ||
2248 | printf_filtered ("Filename extensions and the languages they represent:"); | |
2249 | printf_filtered ("\n\n"); | |
2250 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2251 | printf_filtered ("\t%s\t- %s\n", |
2252 | filename_language_table[i].ext, | |
c906108c SS |
2253 | language_str (filename_language_table[i].lang)); |
2254 | } | |
2255 | ||
2256 | static void | |
fba45db2 | 2257 | init_filename_language_table (void) |
c906108c SS |
2258 | { |
2259 | if (fl_table_size == 0) /* protect against repetition */ | |
2260 | { | |
2261 | fl_table_size = 20; | |
2262 | fl_table_next = 0; | |
c5aa993b | 2263 | filename_language_table = |
c906108c | 2264 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2265 | add_filename_language (".c", language_c); |
2266 | add_filename_language (".C", language_cplus); | |
2267 | add_filename_language (".cc", language_cplus); | |
2268 | add_filename_language (".cp", language_cplus); | |
2269 | add_filename_language (".cpp", language_cplus); | |
2270 | add_filename_language (".cxx", language_cplus); | |
2271 | add_filename_language (".c++", language_cplus); | |
2272 | add_filename_language (".java", language_java); | |
c906108c | 2273 | add_filename_language (".class", language_java); |
da2cf7e0 | 2274 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2275 | add_filename_language (".f", language_fortran); |
2276 | add_filename_language (".F", language_fortran); | |
2277 | add_filename_language (".s", language_asm); | |
2278 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
2279 | add_filename_language (".pas", language_pascal); |
2280 | add_filename_language (".p", language_pascal); | |
2281 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
2282 | } |
2283 | } | |
2284 | ||
2285 | enum language | |
fba45db2 | 2286 | deduce_language_from_filename (char *filename) |
c906108c SS |
2287 | { |
2288 | int i; | |
2289 | char *cp; | |
2290 | ||
2291 | if (filename != NULL) | |
2292 | if ((cp = strrchr (filename, '.')) != NULL) | |
2293 | for (i = 0; i < fl_table_next; i++) | |
2294 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2295 | return filename_language_table[i].lang; | |
2296 | ||
2297 | return language_unknown; | |
2298 | } | |
2299 | \f | |
2300 | /* allocate_symtab: | |
2301 | ||
2302 | Allocate and partly initialize a new symbol table. Return a pointer | |
2303 | to it. error() if no space. | |
2304 | ||
2305 | Caller must set these fields: | |
c5aa993b JM |
2306 | LINETABLE(symtab) |
2307 | symtab->blockvector | |
2308 | symtab->dirname | |
2309 | symtab->free_code | |
2310 | symtab->free_ptr | |
2311 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2312 | */ |
2313 | ||
2314 | struct symtab * | |
fba45db2 | 2315 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c SS |
2316 | { |
2317 | register struct symtab *symtab; | |
2318 | ||
2319 | symtab = (struct symtab *) | |
c5aa993b | 2320 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab)); |
c906108c | 2321 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b JM |
2322 | symtab->filename = obsavestring (filename, strlen (filename), |
2323 | &objfile->symbol_obstack); | |
2324 | symtab->fullname = NULL; | |
2325 | symtab->language = deduce_language_from_filename (filename); | |
2326 | symtab->debugformat = obsavestring ("unknown", 7, | |
2327 | &objfile->symbol_obstack); | |
c906108c SS |
2328 | |
2329 | /* Hook it to the objfile it comes from */ | |
2330 | ||
c5aa993b JM |
2331 | symtab->objfile = objfile; |
2332 | symtab->next = objfile->symtabs; | |
2333 | objfile->symtabs = symtab; | |
c906108c SS |
2334 | |
2335 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2336 | and the Z8000 definition of this macro doesn't have anything to | |
2337 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2338 | here for convenience. */ | |
2339 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2340 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2341 | #endif | |
2342 | ||
2343 | return (symtab); | |
2344 | } | |
2345 | ||
2346 | struct partial_symtab * | |
fba45db2 | 2347 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2348 | { |
2349 | struct partial_symtab *psymtab; | |
2350 | ||
c5aa993b | 2351 | if (objfile->free_psymtabs) |
c906108c | 2352 | { |
c5aa993b JM |
2353 | psymtab = objfile->free_psymtabs; |
2354 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2355 | } |
2356 | else | |
2357 | psymtab = (struct partial_symtab *) | |
c5aa993b | 2358 | obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
2359 | sizeof (struct partial_symtab)); |
2360 | ||
2361 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b JM |
2362 | psymtab->filename = obsavestring (filename, strlen (filename), |
2363 | &objfile->psymbol_obstack); | |
2364 | psymtab->symtab = NULL; | |
c906108c SS |
2365 | |
2366 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2367 | Psymtabs are searched in most recent inserted -> least recent | |
2368 | inserted order. */ | |
2369 | ||
c5aa993b JM |
2370 | psymtab->objfile = objfile; |
2371 | psymtab->next = objfile->psymtabs; | |
2372 | objfile->psymtabs = psymtab; | |
c906108c SS |
2373 | #if 0 |
2374 | { | |
2375 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2376 | psymtab->objfile = objfile; |
2377 | psymtab->next = NULL; | |
2378 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2379 | while ((*prev_pst) != NULL) |
c5aa993b | 2380 | prev_pst = &((*prev_pst)->next); |
c906108c | 2381 | (*prev_pst) = psymtab; |
c5aa993b | 2382 | } |
c906108c | 2383 | #endif |
c5aa993b | 2384 | |
c906108c SS |
2385 | return (psymtab); |
2386 | } | |
2387 | ||
2388 | void | |
fba45db2 | 2389 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2390 | { |
2391 | struct partial_symtab **prev_pst; | |
2392 | ||
2393 | /* From dbxread.c: | |
2394 | Empty psymtabs happen as a result of header files which don't | |
2395 | have any symbols in them. There can be a lot of them. But this | |
2396 | check is wrong, in that a psymtab with N_SLINE entries but | |
2397 | nothing else is not empty, but we don't realize that. Fixing | |
2398 | that without slowing things down might be tricky. */ | |
2399 | ||
2400 | /* First, snip it out of the psymtab chain */ | |
2401 | ||
2402 | prev_pst = &(pst->objfile->psymtabs); | |
2403 | while ((*prev_pst) != pst) | |
2404 | prev_pst = &((*prev_pst)->next); | |
2405 | (*prev_pst) = pst->next; | |
2406 | ||
2407 | /* Next, put it on a free list for recycling */ | |
2408 | ||
2409 | pst->next = pst->objfile->free_psymtabs; | |
2410 | pst->objfile->free_psymtabs = pst; | |
2411 | } | |
c906108c | 2412 | \f |
c5aa993b | 2413 | |
c906108c SS |
2414 | /* Reset all data structures in gdb which may contain references to symbol |
2415 | table data. */ | |
2416 | ||
2417 | void | |
fba45db2 | 2418 | clear_symtab_users (void) |
c906108c SS |
2419 | { |
2420 | /* Someday, we should do better than this, by only blowing away | |
2421 | the things that really need to be blown. */ | |
2422 | clear_value_history (); | |
2423 | clear_displays (); | |
2424 | clear_internalvars (); | |
2425 | breakpoint_re_set (); | |
2426 | set_default_breakpoint (0, 0, 0, 0); | |
0378c332 | 2427 | clear_current_source_symtab_and_line (); |
c906108c | 2428 | clear_pc_function_cache (); |
11cf8741 JM |
2429 | if (target_new_objfile_hook) |
2430 | target_new_objfile_hook (NULL); | |
c906108c SS |
2431 | } |
2432 | ||
74b7792f AC |
2433 | static void |
2434 | clear_symtab_users_cleanup (void *ignore) | |
2435 | { | |
2436 | clear_symtab_users (); | |
2437 | } | |
2438 | ||
c906108c SS |
2439 | /* clear_symtab_users_once: |
2440 | ||
2441 | This function is run after symbol reading, or from a cleanup. | |
2442 | If an old symbol table was obsoleted, the old symbol table | |
2443 | has been blown away, but the other GDB data structures that may | |
2444 | reference it have not yet been cleared or re-directed. (The old | |
2445 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2446 | below.) | |
2447 | ||
2448 | This function can be queued N times as a cleanup, or called | |
2449 | directly; it will do all the work the first time, and then will be a | |
2450 | no-op until the next time it is queued. This works by bumping a | |
2451 | counter at queueing time. Much later when the cleanup is run, or at | |
2452 | the end of symbol processing (in case the cleanup is discarded), if | |
2453 | the queued count is greater than the "done-count", we do the work | |
2454 | and set the done-count to the queued count. If the queued count is | |
2455 | less than or equal to the done-count, we just ignore the call. This | |
2456 | is needed because reading a single .o file will often replace many | |
2457 | symtabs (one per .h file, for example), and we don't want to reset | |
2458 | the breakpoints N times in the user's face. | |
2459 | ||
2460 | The reason we both queue a cleanup, and call it directly after symbol | |
2461 | reading, is because the cleanup protects us in case of errors, but is | |
2462 | discarded if symbol reading is successful. */ | |
2463 | ||
2464 | #if 0 | |
2465 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2466 | is no longer needed. */ | |
a14ed312 | 2467 | static void clear_symtab_users_once (void); |
c906108c SS |
2468 | |
2469 | static int clear_symtab_users_queued; | |
2470 | static int clear_symtab_users_done; | |
2471 | ||
2472 | static void | |
fba45db2 | 2473 | clear_symtab_users_once (void) |
c906108c SS |
2474 | { |
2475 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2476 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2477 | return; | |
2478 | clear_symtab_users_done = clear_symtab_users_queued; | |
2479 | ||
2480 | clear_symtab_users (); | |
2481 | } | |
2482 | #endif | |
2483 | ||
2484 | /* Delete the specified psymtab, and any others that reference it. */ | |
2485 | ||
2486 | static void | |
fba45db2 | 2487 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2488 | { |
2489 | struct partial_symtab *ps, *pprev = NULL; | |
2490 | int i; | |
2491 | ||
2492 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2493 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2494 | { | |
2495 | if (ps == pst) | |
2496 | break; | |
2497 | pprev = ps; | |
2498 | } | |
c906108c | 2499 | |
c5aa993b JM |
2500 | if (ps) |
2501 | { | |
2502 | /* Unhook it from the chain. */ | |
2503 | if (ps == pst->objfile->psymtabs) | |
2504 | pst->objfile->psymtabs = ps->next; | |
2505 | else | |
2506 | pprev->next = ps->next; | |
2507 | ||
2508 | /* FIXME, we can't conveniently deallocate the entries in the | |
2509 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2510 | this psymtab points to. These just take up space until all | |
2511 | the psymtabs are reclaimed. Ditto the dependencies list and | |
2512 | filename, which are all in the psymbol_obstack. */ | |
2513 | ||
2514 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2515 | again: | |
2516 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2517 | { | |
2518 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2519 | { | |
2520 | if (ps->dependencies[i] == pst) | |
2521 | { | |
2522 | cashier_psymtab (ps); | |
2523 | goto again; /* Must restart, chain has been munged. */ | |
2524 | } | |
2525 | } | |
c906108c | 2526 | } |
c906108c | 2527 | } |
c906108c SS |
2528 | } |
2529 | ||
2530 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2531 | with any dependent breakpoints, displays, etc. | |
2532 | Used when loading new versions of object modules with the "add-file" | |
2533 | command. This is only called on the top-level symtab or psymtab's name; | |
2534 | it is not called for subsidiary files such as .h files. | |
2535 | ||
2536 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2537 | FIXME. The return value appears to never be used. |
c906108c SS |
2538 | |
2539 | FIXME. I think this is not the best way to do this. We should | |
2540 | work on being gentler to the environment while still cleaning up | |
2541 | all stray pointers into the freed symtab. */ | |
2542 | ||
2543 | int | |
fba45db2 | 2544 | free_named_symtabs (char *name) |
c906108c SS |
2545 | { |
2546 | #if 0 | |
2547 | /* FIXME: With the new method of each objfile having it's own | |
2548 | psymtab list, this function needs serious rethinking. In particular, | |
2549 | why was it ever necessary to toss psymtabs with specific compilation | |
2550 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2551 | file? -- fnf | |
2552 | Well, the answer is that some systems permit reloading of particular | |
2553 | compilation units. We want to blow away any old info about these | |
2554 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2555 | ||
2556 | register struct symtab *s; | |
2557 | register struct symtab *prev; | |
2558 | register struct partial_symtab *ps; | |
2559 | struct blockvector *bv; | |
2560 | int blewit = 0; | |
2561 | ||
2562 | /* We only wack things if the symbol-reload switch is set. */ | |
2563 | if (!symbol_reloading) | |
2564 | return 0; | |
2565 | ||
2566 | /* Some symbol formats have trouble providing file names... */ | |
2567 | if (name == 0 || *name == '\0') | |
2568 | return 0; | |
2569 | ||
2570 | /* Look for a psymtab with the specified name. */ | |
2571 | ||
2572 | again2: | |
c5aa993b JM |
2573 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2574 | { | |
2575 | if (STREQ (name, ps->filename)) | |
2576 | { | |
2577 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2578 | goto again2; /* Must restart, chain has been munged */ | |
2579 | } | |
c906108c | 2580 | } |
c906108c SS |
2581 | |
2582 | /* Look for a symtab with the specified name. */ | |
2583 | ||
2584 | for (s = symtab_list; s; s = s->next) | |
2585 | { | |
2586 | if (STREQ (name, s->filename)) | |
2587 | break; | |
2588 | prev = s; | |
2589 | } | |
2590 | ||
2591 | if (s) | |
2592 | { | |
2593 | if (s == symtab_list) | |
2594 | symtab_list = s->next; | |
2595 | else | |
2596 | prev->next = s->next; | |
2597 | ||
2598 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2599 | or not they depend on the symtab being freed. This should be |
2600 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2601 | |
2602 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2603 | This test is necessary due to a bug in "dbxread.c" that |
2604 | causes empty symtabs to be created for N_SO symbols that | |
2605 | contain the pathname of the object file. (This problem | |
2606 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2607 | |
2608 | bv = BLOCKVECTOR (s); | |
2609 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2610 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2611 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2612 | { | |
b9caf505 AC |
2613 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", |
2614 | name); | |
c906108c SS |
2615 | clear_symtab_users_queued++; |
2616 | make_cleanup (clear_symtab_users_once, 0); | |
2617 | blewit = 1; | |
c5aa993b JM |
2618 | } |
2619 | else | |
2620 | { | |
b9caf505 AC |
2621 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", |
2622 | name); | |
c906108c SS |
2623 | } |
2624 | ||
2625 | free_symtab (s); | |
2626 | } | |
2627 | else | |
2628 | { | |
2629 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2630 | even though no symtab was found, since the file might have |
2631 | been compiled without debugging, and hence not be associated | |
2632 | with a symtab. In order to handle this correctly, we would need | |
2633 | to keep a list of text address ranges for undebuggable files. | |
2634 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2635 | ; |
2636 | } | |
2637 | ||
2638 | /* FIXME, what about the minimal symbol table? */ | |
2639 | return blewit; | |
2640 | #else | |
2641 | return (0); | |
2642 | #endif | |
2643 | } | |
2644 | \f | |
2645 | /* Allocate and partially fill a partial symtab. It will be | |
2646 | completely filled at the end of the symbol list. | |
2647 | ||
d4f3574e | 2648 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2649 | |
2650 | struct partial_symtab * | |
fba45db2 KB |
2651 | start_psymtab_common (struct objfile *objfile, |
2652 | struct section_offsets *section_offsets, char *filename, | |
2653 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2654 | struct partial_symbol **static_syms) | |
c906108c SS |
2655 | { |
2656 | struct partial_symtab *psymtab; | |
2657 | ||
2658 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2659 | psymtab->section_offsets = section_offsets; |
2660 | psymtab->textlow = textlow; | |
2661 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2662 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2663 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2664 | return (psymtab); |
2665 | } | |
2666 | \f | |
2667 | /* Add a symbol with a long value to a psymtab. | |
2668 | Since one arg is a struct, we pass in a ptr and deref it (sigh). */ | |
2669 | ||
2670 | void | |
fba45db2 KB |
2671 | add_psymbol_to_list (char *name, int namelength, namespace_enum namespace, |
2672 | enum address_class class, | |
2673 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2674 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2675 | enum language language, struct objfile *objfile) | |
c906108c SS |
2676 | { |
2677 | register struct partial_symbol *psym; | |
2678 | char *buf = alloca (namelength + 1); | |
2679 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2680 | structure which might contain random data, causing cache misses in | |
2681 | bcache. */ | |
2682 | static struct partial_symbol psymbol; | |
2683 | ||
2684 | /* Create local copy of the partial symbol */ | |
2685 | memcpy (buf, name, namelength); | |
2686 | buf[namelength] = '\0'; | |
af5f3db6 | 2687 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2688 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2689 | if (val != 0) | |
2690 | { | |
2691 | SYMBOL_VALUE (&psymbol) = val; | |
2692 | } | |
2693 | else | |
2694 | { | |
2695 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2696 | } | |
2697 | SYMBOL_SECTION (&psymbol) = 0; | |
2698 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2699 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2700 | PSYMBOL_CLASS (&psymbol) = class; | |
2701 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2702 | ||
2703 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2704 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2705 | |
2706 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2707 | if (list->next >= list->list + list->size) | |
2708 | { | |
2709 | extend_psymbol_list (list, objfile); | |
2710 | } | |
2711 | *list->next++ = psym; | |
2712 | OBJSTAT (objfile, n_psyms++); | |
2713 | } | |
2714 | ||
2715 | /* Add a symbol with a long value to a psymtab. This differs from | |
2716 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2717 | * name. */ | |
2718 | ||
2719 | void | |
fba45db2 KB |
2720 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
2721 | int dem_namelength, namespace_enum namespace, | |
2722 | enum address_class class, | |
2723 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2724 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2725 | enum language language, | |
2726 | struct objfile *objfile) | |
c906108c SS |
2727 | { |
2728 | register struct partial_symbol *psym; | |
2729 | char *buf = alloca (namelength + 1); | |
2730 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2731 | structure which might contain random data, causing cache misses in | |
2732 | bcache. */ | |
2733 | static struct partial_symbol psymbol; | |
2734 | ||
2735 | /* Create local copy of the partial symbol */ | |
2736 | ||
2737 | memcpy (buf, name, namelength); | |
2738 | buf[namelength] = '\0'; | |
af5f3db6 | 2739 | SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache); |
c906108c SS |
2740 | |
2741 | buf = alloca (dem_namelength + 1); | |
2742 | memcpy (buf, dem_name, dem_namelength); | |
2743 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2744 | |
c906108c SS |
2745 | switch (language) |
2746 | { | |
c5aa993b JM |
2747 | case language_c: |
2748 | case language_cplus: | |
2749 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
af5f3db6 | 2750 | bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2751 | break; |
c906108c SS |
2752 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2753 | } | |
2754 | ||
2755 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2756 | if (val != 0) | |
2757 | { | |
2758 | SYMBOL_VALUE (&psymbol) = val; | |
2759 | } | |
2760 | else | |
2761 | { | |
2762 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2763 | } | |
2764 | SYMBOL_SECTION (&psymbol) = 0; | |
2765 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2766 | PSYMBOL_NAMESPACE (&psymbol) = namespace; | |
2767 | PSYMBOL_CLASS (&psymbol) = class; | |
2768 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2769 | ||
2770 | /* Stash the partial symbol away in the cache */ | |
af5f3db6 | 2771 | psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache); |
c906108c SS |
2772 | |
2773 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2774 | if (list->next >= list->list + list->size) | |
2775 | { | |
2776 | extend_psymbol_list (list, objfile); | |
2777 | } | |
2778 | *list->next++ = psym; | |
2779 | OBJSTAT (objfile, n_psyms++); | |
2780 | } | |
2781 | ||
2782 | /* Initialize storage for partial symbols. */ | |
2783 | ||
2784 | void | |
fba45db2 | 2785 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2786 | { |
2787 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2788 | |
2789 | if (objfile->global_psymbols.list) | |
c906108c | 2790 | { |
4efb68b1 | 2791 | xmfree (objfile->md, objfile->global_psymbols.list); |
c906108c | 2792 | } |
c5aa993b | 2793 | if (objfile->static_psymbols.list) |
c906108c | 2794 | { |
4efb68b1 | 2795 | xmfree (objfile->md, objfile->static_psymbols.list); |
c906108c | 2796 | } |
c5aa993b | 2797 | |
c906108c SS |
2798 | /* Current best guess is that approximately a twentieth |
2799 | of the total symbols (in a debugging file) are global or static | |
2800 | oriented symbols */ | |
c906108c | 2801 | |
c5aa993b JM |
2802 | objfile->global_psymbols.size = total_symbols / 10; |
2803 | objfile->static_psymbols.size = total_symbols / 10; | |
2804 | ||
2805 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2806 | { |
c5aa993b JM |
2807 | objfile->global_psymbols.next = |
2808 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2809 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2810 | * sizeof (struct partial_symbol *))); | |
c906108c | 2811 | } |
c5aa993b | 2812 | if (objfile->static_psymbols.size > 0) |
c906108c | 2813 | { |
c5aa993b JM |
2814 | objfile->static_psymbols.next = |
2815 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2816 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2817 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2818 | } |
2819 | } | |
2820 | ||
2821 | /* OVERLAYS: | |
2822 | The following code implements an abstraction for debugging overlay sections. | |
2823 | ||
2824 | The target model is as follows: | |
2825 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2826 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2827 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2828 | sections, one by one, from the load address into the VMA address. |
c906108c | 2829 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2830 | sections should be considered to be mapped from the VMA to the LMA. |
2831 | This information is used for symbol lookup, and memory read/write. | |
2832 | For instance, if a section has been mapped then its contents | |
2833 | should be read from the VMA, otherwise from the LMA. | |
c906108c SS |
2834 | |
2835 | Two levels of debugger support for overlays are available. One is | |
2836 | "manual", in which the debugger relies on the user to tell it which | |
2837 | overlays are currently mapped. This level of support is | |
2838 | implemented entirely in the core debugger, and the information about | |
2839 | whether a section is mapped is kept in the objfile->obj_section table. | |
2840 | ||
2841 | The second level of support is "automatic", and is only available if | |
2842 | the target-specific code provides functionality to read the target's | |
2843 | overlay mapping table, and translate its contents for the debugger | |
2844 | (by updating the mapped state information in the obj_section tables). | |
2845 | ||
2846 | The interface is as follows: | |
c5aa993b JM |
2847 | User commands: |
2848 | overlay map <name> -- tell gdb to consider this section mapped | |
2849 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2850 | overlay list -- list the sections that GDB thinks are mapped | |
2851 | overlay read-target -- get the target's state of what's mapped | |
2852 | overlay off/manual/auto -- set overlay debugging state | |
2853 | Functional interface: | |
2854 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2855 | section, return that section. | |
2856 | find_pc_overlay(pc): find any overlay section that contains | |
2857 | the pc, either in its VMA or its LMA | |
2858 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2859 | section_is_overlay(sect): true if section's VMA != LMA | |
2860 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2861 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2862 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2863 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2864 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2865 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2866 | either in VMA or LMA depending on whether | |
2867 | the symbol's section is currently mapped | |
c906108c SS |
2868 | */ |
2869 | ||
2870 | /* Overlay debugging state: */ | |
2871 | ||
d874f1e2 | 2872 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2873 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2874 | ||
2875 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2876 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2877 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2878 | |
2879 | /* Function: section_is_overlay (SECTION) | |
2880 | Returns true if SECTION has VMA not equal to LMA, ie. | |
2881 | SECTION is loaded at an address different from where it will "run". */ | |
2882 | ||
2883 | int | |
fba45db2 | 2884 | section_is_overlay (asection *section) |
c906108c | 2885 | { |
fbd35540 MS |
2886 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2887 | ||
c906108c SS |
2888 | if (overlay_debugging) |
2889 | if (section && section->lma != 0 && | |
2890 | section->vma != section->lma) | |
2891 | return 1; | |
2892 | ||
2893 | return 0; | |
2894 | } | |
2895 | ||
2896 | /* Function: overlay_invalidate_all (void) | |
2897 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2898 | ||
2899 | static void | |
fba45db2 | 2900 | overlay_invalidate_all (void) |
c906108c | 2901 | { |
c5aa993b | 2902 | struct objfile *objfile; |
c906108c SS |
2903 | struct obj_section *sect; |
2904 | ||
2905 | ALL_OBJSECTIONS (objfile, sect) | |
2906 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2907 | sect->ovly_mapped = -1; |
c906108c SS |
2908 | } |
2909 | ||
2910 | /* Function: overlay_is_mapped (SECTION) | |
2911 | Returns true if section is an overlay, and is currently mapped. | |
2912 | Private: public access is thru function section_is_mapped. | |
2913 | ||
2914 | Access to the ovly_mapped flag is restricted to this function, so | |
2915 | that we can do automatic update. If the global flag | |
2916 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2917 | overlay_invalidate_all. If the mapped state of the particular | |
2918 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2919 | ||
c5aa993b | 2920 | static int |
fba45db2 | 2921 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2922 | { |
2923 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2924 | return 0; | |
2925 | ||
c5aa993b | 2926 | switch (overlay_debugging) |
c906108c SS |
2927 | { |
2928 | default: | |
d874f1e2 | 2929 | case ovly_off: |
c5aa993b | 2930 | return 0; /* overlay debugging off */ |
d874f1e2 | 2931 | case ovly_auto: /* overlay debugging automatic */ |
c906108c | 2932 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2933 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2934 | if (target_overlay_update) |
2935 | { | |
2936 | if (overlay_cache_invalid) | |
2937 | { | |
2938 | overlay_invalidate_all (); | |
2939 | overlay_cache_invalid = 0; | |
2940 | } | |
2941 | if (osect->ovly_mapped == -1) | |
2942 | (*target_overlay_update) (osect); | |
2943 | } | |
2944 | /* fall thru to manual case */ | |
d874f1e2 | 2945 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2946 | return osect->ovly_mapped == 1; |
2947 | } | |
2948 | } | |
2949 | ||
2950 | /* Function: section_is_mapped | |
2951 | Returns true if section is an overlay, and is currently mapped. */ | |
2952 | ||
2953 | int | |
fba45db2 | 2954 | section_is_mapped (asection *section) |
c906108c | 2955 | { |
c5aa993b | 2956 | struct objfile *objfile; |
c906108c SS |
2957 | struct obj_section *osect; |
2958 | ||
2959 | if (overlay_debugging) | |
2960 | if (section && section_is_overlay (section)) | |
2961 | ALL_OBJSECTIONS (objfile, osect) | |
2962 | if (osect->the_bfd_section == section) | |
c5aa993b | 2963 | return overlay_is_mapped (osect); |
c906108c SS |
2964 | |
2965 | return 0; | |
2966 | } | |
2967 | ||
2968 | /* Function: pc_in_unmapped_range | |
2969 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2970 | ||
2971 | CORE_ADDR | |
fba45db2 | 2972 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2973 | { |
fbd35540 MS |
2974 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2975 | ||
c906108c SS |
2976 | int size; |
2977 | ||
2978 | if (overlay_debugging) | |
2979 | if (section && section_is_overlay (section)) | |
2980 | { | |
2981 | size = bfd_get_section_size_before_reloc (section); | |
2982 | if (section->lma <= pc && pc < section->lma + size) | |
2983 | return 1; | |
2984 | } | |
2985 | return 0; | |
2986 | } | |
2987 | ||
2988 | /* Function: pc_in_mapped_range | |
2989 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2990 | ||
2991 | CORE_ADDR | |
fba45db2 | 2992 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2993 | { |
fbd35540 MS |
2994 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2995 | ||
c906108c SS |
2996 | int size; |
2997 | ||
2998 | if (overlay_debugging) | |
2999 | if (section && section_is_overlay (section)) | |
3000 | { | |
3001 | size = bfd_get_section_size_before_reloc (section); | |
3002 | if (section->vma <= pc && pc < section->vma + size) | |
3003 | return 1; | |
3004 | } | |
3005 | return 0; | |
3006 | } | |
3007 | ||
9ec8e6a0 JB |
3008 | |
3009 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3010 | otherwise. */ | |
3011 | int | |
3012 | sections_overlap (asection *a, asection *b) | |
3013 | { | |
fbd35540 MS |
3014 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3015 | ||
9ec8e6a0 JB |
3016 | CORE_ADDR a_start = a->vma; |
3017 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
3018 | CORE_ADDR b_start = b->vma; | |
3019 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
3020 | ||
3021 | return (a_start < b_end && b_start < a_end); | |
3022 | } | |
3023 | ||
c906108c SS |
3024 | /* Function: overlay_unmapped_address (PC, SECTION) |
3025 | Returns the address corresponding to PC in the unmapped (load) range. | |
3026 | May be the same as PC. */ | |
3027 | ||
3028 | CORE_ADDR | |
fba45db2 | 3029 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3030 | { |
fbd35540 MS |
3031 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3032 | ||
c906108c SS |
3033 | if (overlay_debugging) |
3034 | if (section && section_is_overlay (section) && | |
3035 | pc_in_mapped_range (pc, section)) | |
3036 | return pc + section->lma - section->vma; | |
3037 | ||
3038 | return pc; | |
3039 | } | |
3040 | ||
3041 | /* Function: overlay_mapped_address (PC, SECTION) | |
3042 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3043 | May be the same as PC. */ | |
3044 | ||
3045 | CORE_ADDR | |
fba45db2 | 3046 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3047 | { |
fbd35540 MS |
3048 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3049 | ||
c906108c SS |
3050 | if (overlay_debugging) |
3051 | if (section && section_is_overlay (section) && | |
3052 | pc_in_unmapped_range (pc, section)) | |
3053 | return pc + section->vma - section->lma; | |
3054 | ||
3055 | return pc; | |
3056 | } | |
3057 | ||
3058 | ||
3059 | /* Function: symbol_overlayed_address | |
3060 | Return one of two addresses (relative to the VMA or to the LMA), | |
3061 | depending on whether the section is mapped or not. */ | |
3062 | ||
c5aa993b | 3063 | CORE_ADDR |
fba45db2 | 3064 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3065 | { |
3066 | if (overlay_debugging) | |
3067 | { | |
3068 | /* If the symbol has no section, just return its regular address. */ | |
3069 | if (section == 0) | |
3070 | return address; | |
3071 | /* If the symbol's section is not an overlay, just return its address */ | |
3072 | if (!section_is_overlay (section)) | |
3073 | return address; | |
3074 | /* If the symbol's section is mapped, just return its address */ | |
3075 | if (section_is_mapped (section)) | |
3076 | return address; | |
3077 | /* | |
3078 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3079 | * then return its LOADED address rather than its vma address!! | |
3080 | */ | |
3081 | return overlay_unmapped_address (address, section); | |
3082 | } | |
3083 | return address; | |
3084 | } | |
3085 | ||
3086 | /* Function: find_pc_overlay (PC) | |
3087 | Return the best-match overlay section for PC: | |
3088 | If PC matches a mapped overlay section's VMA, return that section. | |
3089 | Else if PC matches an unmapped section's VMA, return that section. | |
3090 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3091 | ||
3092 | asection * | |
fba45db2 | 3093 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3094 | { |
c5aa993b | 3095 | struct objfile *objfile; |
c906108c SS |
3096 | struct obj_section *osect, *best_match = NULL; |
3097 | ||
3098 | if (overlay_debugging) | |
3099 | ALL_OBJSECTIONS (objfile, osect) | |
3100 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3101 | { |
3102 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3103 | { | |
3104 | if (overlay_is_mapped (osect)) | |
3105 | return osect->the_bfd_section; | |
3106 | else | |
3107 | best_match = osect; | |
3108 | } | |
3109 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3110 | best_match = osect; | |
3111 | } | |
c906108c SS |
3112 | return best_match ? best_match->the_bfd_section : NULL; |
3113 | } | |
3114 | ||
3115 | /* Function: find_pc_mapped_section (PC) | |
3116 | If PC falls into the VMA address range of an overlay section that is | |
3117 | currently marked as MAPPED, return that section. Else return NULL. */ | |
3118 | ||
3119 | asection * | |
fba45db2 | 3120 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3121 | { |
c5aa993b | 3122 | struct objfile *objfile; |
c906108c SS |
3123 | struct obj_section *osect; |
3124 | ||
3125 | if (overlay_debugging) | |
3126 | ALL_OBJSECTIONS (objfile, osect) | |
3127 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3128 | overlay_is_mapped (osect)) | |
c5aa993b | 3129 | return osect->the_bfd_section; |
c906108c SS |
3130 | |
3131 | return NULL; | |
3132 | } | |
3133 | ||
3134 | /* Function: list_overlays_command | |
3135 | Print a list of mapped sections and their PC ranges */ | |
3136 | ||
3137 | void | |
fba45db2 | 3138 | list_overlays_command (char *args, int from_tty) |
c906108c | 3139 | { |
c5aa993b JM |
3140 | int nmapped = 0; |
3141 | struct objfile *objfile; | |
c906108c SS |
3142 | struct obj_section *osect; |
3143 | ||
3144 | if (overlay_debugging) | |
3145 | ALL_OBJSECTIONS (objfile, osect) | |
3146 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3147 | { |
3148 | const char *name; | |
3149 | bfd_vma lma, vma; | |
3150 | int size; | |
3151 | ||
3152 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3153 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3154 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3155 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3156 | ||
3157 | printf_filtered ("Section %s, loaded at ", name); | |
3158 | print_address_numeric (lma, 1, gdb_stdout); | |
3159 | puts_filtered (" - "); | |
3160 | print_address_numeric (lma + size, 1, gdb_stdout); | |
3161 | printf_filtered (", mapped at "); | |
3162 | print_address_numeric (vma, 1, gdb_stdout); | |
3163 | puts_filtered (" - "); | |
3164 | print_address_numeric (vma + size, 1, gdb_stdout); | |
3165 | puts_filtered ("\n"); | |
3166 | ||
3167 | nmapped++; | |
3168 | } | |
c906108c SS |
3169 | if (nmapped == 0) |
3170 | printf_filtered ("No sections are mapped.\n"); | |
3171 | } | |
3172 | ||
3173 | /* Function: map_overlay_command | |
3174 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3175 | ||
3176 | void | |
fba45db2 | 3177 | map_overlay_command (char *args, int from_tty) |
c906108c | 3178 | { |
c5aa993b JM |
3179 | struct objfile *objfile, *objfile2; |
3180 | struct obj_section *sec, *sec2; | |
3181 | asection *bfdsec; | |
c906108c SS |
3182 | |
3183 | if (!overlay_debugging) | |
515ad16c EZ |
3184 | error ("\ |
3185 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3186 | the 'overlay manual' command."); | |
c906108c SS |
3187 | |
3188 | if (args == 0 || *args == 0) | |
3189 | error ("Argument required: name of an overlay section"); | |
3190 | ||
3191 | /* First, find a section matching the user supplied argument */ | |
3192 | ALL_OBJSECTIONS (objfile, sec) | |
3193 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3194 | { |
3195 | /* Now, check to see if the section is an overlay. */ | |
3196 | bfdsec = sec->the_bfd_section; | |
3197 | if (!section_is_overlay (bfdsec)) | |
3198 | continue; /* not an overlay section */ | |
3199 | ||
3200 | /* Mark the overlay as "mapped" */ | |
3201 | sec->ovly_mapped = 1; | |
3202 | ||
3203 | /* Next, make a pass and unmap any sections that are | |
3204 | overlapped by this new section: */ | |
3205 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3206 | if (sec2->ovly_mapped |
3207 | && sec != sec2 | |
3208 | && sec->the_bfd_section != sec2->the_bfd_section | |
3209 | && sections_overlap (sec->the_bfd_section, | |
3210 | sec2->the_bfd_section)) | |
c5aa993b JM |
3211 | { |
3212 | if (info_verbose) | |
3213 | printf_filtered ("Note: section %s unmapped by overlap\n", | |
3214 | bfd_section_name (objfile->obfd, | |
3215 | sec2->the_bfd_section)); | |
3216 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3217 | } | |
3218 | return; | |
3219 | } | |
c906108c SS |
3220 | error ("No overlay section called %s", args); |
3221 | } | |
3222 | ||
3223 | /* Function: unmap_overlay_command | |
3224 | Mark the overlay section as unmapped | |
3225 | (ie. resident in its LMA address range, rather than the VMA range). */ | |
3226 | ||
3227 | void | |
fba45db2 | 3228 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3229 | { |
c5aa993b | 3230 | struct objfile *objfile; |
c906108c SS |
3231 | struct obj_section *sec; |
3232 | ||
3233 | if (!overlay_debugging) | |
515ad16c EZ |
3234 | error ("\ |
3235 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3236 | the 'overlay manual' command."); | |
c906108c SS |
3237 | |
3238 | if (args == 0 || *args == 0) | |
3239 | error ("Argument required: name of an overlay section"); | |
3240 | ||
3241 | /* First, find a section matching the user supplied argument */ | |
3242 | ALL_OBJSECTIONS (objfile, sec) | |
3243 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3244 | { |
3245 | if (!sec->ovly_mapped) | |
3246 | error ("Section %s is not mapped", args); | |
3247 | sec->ovly_mapped = 0; | |
3248 | return; | |
3249 | } | |
c906108c SS |
3250 | error ("No overlay section called %s", args); |
3251 | } | |
3252 | ||
3253 | /* Function: overlay_auto_command | |
3254 | A utility command to turn on overlay debugging. | |
3255 | Possibly this should be done via a set/show command. */ | |
3256 | ||
3257 | static void | |
fba45db2 | 3258 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3259 | { |
d874f1e2 | 3260 | overlay_debugging = ovly_auto; |
1900040c | 3261 | enable_overlay_breakpoints (); |
c906108c SS |
3262 | if (info_verbose) |
3263 | printf_filtered ("Automatic overlay debugging enabled."); | |
3264 | } | |
3265 | ||
3266 | /* Function: overlay_manual_command | |
3267 | A utility command to turn on overlay debugging. | |
3268 | Possibly this should be done via a set/show command. */ | |
3269 | ||
3270 | static void | |
fba45db2 | 3271 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3272 | { |
d874f1e2 | 3273 | overlay_debugging = ovly_on; |
1900040c | 3274 | disable_overlay_breakpoints (); |
c906108c SS |
3275 | if (info_verbose) |
3276 | printf_filtered ("Overlay debugging enabled."); | |
3277 | } | |
3278 | ||
3279 | /* Function: overlay_off_command | |
3280 | A utility command to turn on overlay debugging. | |
3281 | Possibly this should be done via a set/show command. */ | |
3282 | ||
3283 | static void | |
fba45db2 | 3284 | overlay_off_command (char *args, int from_tty) |
c906108c | 3285 | { |
d874f1e2 | 3286 | overlay_debugging = ovly_off; |
1900040c | 3287 | disable_overlay_breakpoints (); |
c906108c SS |
3288 | if (info_verbose) |
3289 | printf_filtered ("Overlay debugging disabled."); | |
3290 | } | |
3291 | ||
3292 | static void | |
fba45db2 | 3293 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
3294 | { |
3295 | if (target_overlay_update) | |
3296 | (*target_overlay_update) (NULL); | |
3297 | else | |
3298 | error ("This target does not know how to read its overlay state."); | |
3299 | } | |
3300 | ||
3301 | /* Function: overlay_command | |
3302 | A place-holder for a mis-typed command */ | |
3303 | ||
3304 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3305 | struct cmd_list_element *overlaylist; | |
3306 | ||
3307 | static void | |
fba45db2 | 3308 | overlay_command (char *args, int from_tty) |
c906108c | 3309 | { |
c5aa993b | 3310 | printf_unfiltered |
c906108c SS |
3311 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3312 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3313 | } | |
3314 | ||
3315 | ||
3316 | /* Target Overlays for the "Simplest" overlay manager: | |
3317 | ||
3318 | This is GDB's default target overlay layer. It works with the | |
3319 | minimal overlay manager supplied as an example by Cygnus. The | |
3320 | entry point is via a function pointer "target_overlay_update", | |
3321 | so targets that use a different runtime overlay manager can | |
3322 | substitute their own overlay_update function and take over the | |
3323 | function pointer. | |
3324 | ||
3325 | The overlay_update function pokes around in the target's data structures | |
3326 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3327 | this information. | |
3328 | ||
3329 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3330 | unsigned _novlys; /# number of overlay sections #/ |
3331 | unsigned _ovly_table[_novlys][4] = { | |
3332 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3333 | {..., ..., ..., ...}, | |
3334 | } | |
3335 | unsigned _novly_regions; /# number of overlay regions #/ | |
3336 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3337 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3338 | {..., ..., ...}, | |
3339 | } | |
c906108c SS |
3340 | These functions will attempt to update GDB's mappedness state in the |
3341 | symbol section table, based on the target's mappedness state. | |
3342 | ||
3343 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3344 | attempt to detect when the cached copy is invalidated. The main | |
3345 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3346 | the cached table and re-reads only the entry for that section from | |
3347 | the target (whenever possible). | |
3348 | */ | |
3349 | ||
3350 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3351 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3352 | #if 0 |
c5aa993b | 3353 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3354 | #endif |
c5aa993b | 3355 | static unsigned cache_novlys = 0; |
c906108c | 3356 | #if 0 |
c5aa993b | 3357 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3358 | #endif |
3359 | static CORE_ADDR cache_ovly_table_base = 0; | |
3360 | #if 0 | |
3361 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3362 | #endif | |
c5aa993b JM |
3363 | enum ovly_index |
3364 | { | |
3365 | VMA, SIZE, LMA, MAPPED | |
3366 | }; | |
c906108c SS |
3367 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3368 | ||
3369 | /* Throw away the cached copy of _ovly_table */ | |
3370 | static void | |
fba45db2 | 3371 | simple_free_overlay_table (void) |
c906108c SS |
3372 | { |
3373 | if (cache_ovly_table) | |
b8c9b27d | 3374 | xfree (cache_ovly_table); |
c5aa993b | 3375 | cache_novlys = 0; |
c906108c SS |
3376 | cache_ovly_table = NULL; |
3377 | cache_ovly_table_base = 0; | |
3378 | } | |
3379 | ||
3380 | #if 0 | |
3381 | /* Throw away the cached copy of _ovly_region_table */ | |
3382 | static void | |
fba45db2 | 3383 | simple_free_overlay_region_table (void) |
c906108c SS |
3384 | { |
3385 | if (cache_ovly_region_table) | |
b8c9b27d | 3386 | xfree (cache_ovly_region_table); |
c5aa993b | 3387 | cache_novly_regions = 0; |
c906108c SS |
3388 | cache_ovly_region_table = NULL; |
3389 | cache_ovly_region_table_base = 0; | |
3390 | } | |
3391 | #endif | |
3392 | ||
3393 | /* Read an array of ints from the target into a local buffer. | |
3394 | Convert to host order. int LEN is number of ints */ | |
3395 | static void | |
fba45db2 | 3396 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3397 | { |
34c0bd93 | 3398 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3399 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3400 | int i; |
c906108c SS |
3401 | |
3402 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3403 | for (i = 0; i < len; i++) | |
c5aa993b | 3404 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3405 | TARGET_LONG_BYTES); |
3406 | } | |
3407 | ||
3408 | /* Find and grab a copy of the target _ovly_table | |
3409 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3410 | static int |
fba45db2 | 3411 | simple_read_overlay_table (void) |
c906108c | 3412 | { |
0d43edd1 | 3413 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3414 | |
3415 | simple_free_overlay_table (); | |
9b27852e | 3416 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3417 | if (! novlys_msym) |
c906108c | 3418 | { |
0d43edd1 JB |
3419 | error ("Error reading inferior's overlay table: " |
3420 | "couldn't find `_novlys' variable\n" | |
3421 | "in inferior. Use `overlay manual' mode."); | |
3422 | return 0; | |
c906108c | 3423 | } |
0d43edd1 | 3424 | |
9b27852e | 3425 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3426 | if (! ovly_table_msym) |
3427 | { | |
3428 | error ("Error reading inferior's overlay table: couldn't find " | |
3429 | "`_ovly_table' array\n" | |
3430 | "in inferior. Use `overlay manual' mode."); | |
3431 | return 0; | |
3432 | } | |
3433 | ||
3434 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3435 | cache_ovly_table | |
3436 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3437 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3438 | read_target_long_array (cache_ovly_table_base, | |
3439 | (int *) cache_ovly_table, | |
3440 | cache_novlys * 4); | |
3441 | ||
c5aa993b | 3442 | return 1; /* SUCCESS */ |
c906108c SS |
3443 | } |
3444 | ||
3445 | #if 0 | |
3446 | /* Find and grab a copy of the target _ovly_region_table | |
3447 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3448 | static int |
fba45db2 | 3449 | simple_read_overlay_region_table (void) |
c906108c SS |
3450 | { |
3451 | struct minimal_symbol *msym; | |
3452 | ||
3453 | simple_free_overlay_region_table (); | |
9b27852e | 3454 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3455 | if (msym != NULL) |
3456 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3457 | else |
3458 | return 0; /* failure */ | |
c906108c SS |
3459 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3460 | if (cache_ovly_region_table != NULL) | |
3461 | { | |
9b27852e | 3462 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3463 | if (msym != NULL) |
3464 | { | |
3465 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3466 | read_target_long_array (cache_ovly_region_table_base, |
3467 | (int *) cache_ovly_region_table, | |
c906108c SS |
3468 | cache_novly_regions * 3); |
3469 | } | |
c5aa993b JM |
3470 | else |
3471 | return 0; /* failure */ | |
c906108c | 3472 | } |
c5aa993b JM |
3473 | else |
3474 | return 0; /* failure */ | |
3475 | return 1; /* SUCCESS */ | |
c906108c SS |
3476 | } |
3477 | #endif | |
3478 | ||
3479 | /* Function: simple_overlay_update_1 | |
3480 | A helper function for simple_overlay_update. Assuming a cached copy | |
3481 | of _ovly_table exists, look through it to find an entry whose vma, | |
3482 | lma and size match those of OSECT. Re-read the entry and make sure | |
3483 | it still matches OSECT (else the table may no longer be valid). | |
3484 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3485 | success, 0 for failure. */ | |
3486 | ||
3487 | static int | |
fba45db2 | 3488 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3489 | { |
3490 | int i, size; | |
fbd35540 MS |
3491 | bfd *obfd = osect->objfile->obfd; |
3492 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3493 | |
3494 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3495 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3496 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3497 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3498 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3499 | { |
3500 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3501 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3502 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3503 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3504 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3505 | { |
3506 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3507 | return 1; | |
3508 | } | |
fbd35540 | 3509 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3510 | return 0; |
3511 | } | |
3512 | return 0; | |
3513 | } | |
3514 | ||
3515 | /* Function: simple_overlay_update | |
3516 | If OSECT is NULL, then update all sections' mapped state | |
3517 | (after re-reading the entire target _ovly_table). | |
3518 | If OSECT is non-NULL, then try to find a matching entry in the | |
3519 | cached ovly_table and update only OSECT's mapped state. | |
3520 | If a cached entry can't be found or the cache isn't valid, then | |
3521 | re-read the entire cache, and go ahead and update all sections. */ | |
3522 | ||
3523 | static void | |
fba45db2 | 3524 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3525 | { |
c5aa993b | 3526 | struct objfile *objfile; |
c906108c SS |
3527 | |
3528 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3529 | if (osect) | |
3530 | /* Have we got a cached copy of the target's overlay table? */ | |
3531 | if (cache_ovly_table != NULL) | |
3532 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3533 | if (cache_ovly_table_base == |
9b27852e | 3534 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3535 | /* Then go ahead and try to look up this single section in the cache */ |
3536 | if (simple_overlay_update_1 (osect)) | |
3537 | /* Found it! We're done. */ | |
3538 | return; | |
3539 | ||
3540 | /* Cached table no good: need to read the entire table anew. | |
3541 | Or else we want all the sections, in which case it's actually | |
3542 | more efficient to read the whole table in one block anyway. */ | |
3543 | ||
0d43edd1 JB |
3544 | if (! simple_read_overlay_table ()) |
3545 | return; | |
3546 | ||
c906108c SS |
3547 | /* Now may as well update all sections, even if only one was requested. */ |
3548 | ALL_OBJSECTIONS (objfile, osect) | |
3549 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3550 | { |
3551 | int i, size; | |
fbd35540 MS |
3552 | bfd *obfd = osect->objfile->obfd; |
3553 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3554 | |
3555 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3556 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3557 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3558 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3559 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3560 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3561 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3562 | break; /* finished with inner for loop: break out */ | |
3563 | } | |
3564 | } | |
c906108c SS |
3565 | } |
3566 | ||
086df311 DJ |
3567 | /* Set the output sections and output offsets for section SECTP in |
3568 | ABFD. The relocation code in BFD will read these offsets, so we | |
3569 | need to be sure they're initialized. We map each section to itself, | |
3570 | with no offset; this means that SECTP->vma will be honored. */ | |
3571 | ||
3572 | static void | |
3573 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3574 | { | |
3575 | sectp->output_section = sectp; | |
3576 | sectp->output_offset = 0; | |
3577 | } | |
3578 | ||
3579 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3580 | contents are stored in BUF if it is non-NULL, or returned in a | |
3581 | malloc'd buffer otherwise. | |
3582 | ||
3583 | For some platforms and debug info formats, shared libraries contain | |
3584 | relocations against the debug sections (particularly for DWARF-2; | |
3585 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3586 | the version of the linker in use). Also, ELF object files naturally | |
3587 | have unresolved relocations for their debug sections. We need to apply | |
3588 | the relocations in order to get the locations of symbols correct. */ | |
3589 | ||
3590 | bfd_byte * | |
3591 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3592 | { | |
3593 | /* We're only interested in debugging sections with relocation | |
3594 | information. */ | |
3595 | if ((sectp->flags & SEC_RELOC) == 0) | |
3596 | return NULL; | |
3597 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3598 | return NULL; | |
3599 | ||
3600 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3601 | all sections begin at 0. */ | |
3602 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3603 | ||
3604 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf); | |
3605 | } | |
c906108c SS |
3606 | |
3607 | void | |
fba45db2 | 3608 | _initialize_symfile (void) |
c906108c SS |
3609 | { |
3610 | struct cmd_list_element *c; | |
c5aa993b | 3611 | |
c906108c | 3612 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3613 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3614 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3615 | to execute.", &cmdlist); | |
5ba2abeb | 3616 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3617 | |
3618 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3619 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3620 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3621 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3622 | The optional arguments are section-name section-address pairs and\n\ |
3623 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3624 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3625 | &cmdlist); |
5ba2abeb | 3626 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3627 | |
3628 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3629 | add_shared_symbol_files_command, | |
3630 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3631 | &cmdlist); |
c906108c SS |
3632 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3633 | &cmdlist); | |
3634 | ||
3635 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3636 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3637 | for access from GDB.", &cmdlist); |
5ba2abeb | 3638 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3639 | |
3640 | add_show_from_set | |
3641 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3642 | (char *) &symbol_reloading, |
3643 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3644 | &setlist), |
3645 | &showlist); | |
3646 | ||
c5aa993b JM |
3647 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3648 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3649 | "overlay ", 0, &cmdlist); |
3650 | ||
3651 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3652 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3653 | ||
c5aa993b | 3654 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3655 | "Assert that an overlay section is mapped.", &overlaylist); |
3656 | ||
c5aa993b | 3657 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3658 | "Assert that an overlay section is unmapped.", &overlaylist); |
3659 | ||
c5aa993b | 3660 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3661 | "List mappings of overlay sections.", &overlaylist); |
3662 | ||
c5aa993b | 3663 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3664 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3665 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3666 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3667 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3668 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3669 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3670 | "Read the overlay mapping state from the target.", &overlaylist); |
3671 | ||
3672 | /* Filename extension to source language lookup table: */ | |
3673 | init_filename_language_table (); | |
3674 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3675 | (char *) &ext_args, |
c906108c SS |
3676 | "Set mapping between filename extension and source language.\n\ |
3677 | Usage: set extension-language .foo bar", | |
c5aa993b | 3678 | &setlist); |
9f60d481 | 3679 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3680 | |
c5aa993b | 3681 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3682 | "All filename extensions associated with a source language."); |
917317f4 JM |
3683 | |
3684 | add_show_from_set | |
3685 | (add_set_cmd ("download-write-size", class_obscure, | |
3686 | var_integer, (char *) &download_write_size, | |
3687 | "Set the write size used when downloading a program.\n" | |
3688 | "Only used when downloading a program onto a remote\n" | |
3689 | "target. Specify zero, or a negative value, to disable\n" | |
3690 | "blocked writes. The actual size of each transfer is also\n" | |
3691 | "limited by the size of the target packet and the memory\n" | |
3692 | "cache.\n", | |
3693 | &setlist), | |
3694 | &showlist); | |
5b5d99cf JB |
3695 | |
3696 | debug_file_directory = xstrdup (DEBUGDIR); | |
3697 | c = (add_set_cmd | |
3698 | ("debug-file-directory", class_support, var_string, | |
3699 | (char *) &debug_file_directory, | |
3700 | "Set the directory where separate debug symbols are searched for.\n" | |
3701 | "Separate debug symbols are first searched for in the same\n" | |
3702 | "directory as the binary, then in the `" DEBUG_SUBDIRECTORY | |
3703 | "' subdirectory,\n" | |
3704 | "and lastly at the path of the directory of the binary with\n" | |
3705 | "the global debug-file directory prepended\n", | |
3706 | &setlist)); | |
3707 | add_show_from_set (c, &showlist); | |
3708 | set_cmd_completer (c, filename_completer); | |
3709 | ||
c906108c | 3710 | } |