Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1990-2012 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
7e8580c1 | 48 | #include "gdb_assert.h" |
fe898f56 | 49 | #include "block.h" |
ea53e89f | 50 | #include "observer.h" |
c1bd25fd | 51 | #include "exec.h" |
9bdcbae7 | 52 | #include "parser-defs.h" |
8756216b | 53 | #include "varobj.h" |
77069918 | 54 | #include "elf-bfd.h" |
e85a822c | 55 | #include "solib.h" |
f1838a98 | 56 | #include "remote.h" |
1bfeeb0f | 57 | #include "stack.h" |
c906108c | 58 | |
c906108c SS |
59 | #include <sys/types.h> |
60 | #include <fcntl.h> | |
61 | #include "gdb_string.h" | |
62 | #include "gdb_stat.h" | |
63 | #include <ctype.h> | |
64 | #include <time.h> | |
2b71414d | 65 | #include <sys/time.h> |
c906108c | 66 | |
ccefe4c4 | 67 | #include "psymtab.h" |
c906108c | 68 | |
3e43a32a MS |
69 | int (*deprecated_ui_load_progress_hook) (const char *section, |
70 | unsigned long num); | |
9a4105ab | 71 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
72 | unsigned long section_sent, |
73 | unsigned long section_size, | |
74 | unsigned long total_sent, | |
c2d11a7d | 75 | unsigned long total_size); |
769d7dc4 AC |
76 | void (*deprecated_pre_add_symbol_hook) (const char *); |
77 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 78 | |
74b7792f AC |
79 | static void clear_symtab_users_cleanup (void *ignore); |
80 | ||
c378eb4e MS |
81 | /* Global variables owned by this file. */ |
82 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 83 | |
c378eb4e | 84 | /* External variables and functions referenced. */ |
c906108c | 85 | |
a14ed312 | 86 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c | 87 | |
c378eb4e | 88 | /* Functions this file defines. */ |
c906108c | 89 | |
a14ed312 | 90 | static void load_command (char *, int); |
c906108c | 91 | |
d7db6da9 FN |
92 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
93 | ||
a14ed312 | 94 | static void add_symbol_file_command (char *, int); |
c906108c | 95 | |
a14ed312 | 96 | bfd *symfile_bfd_open (char *); |
c906108c | 97 | |
0e931cf0 JB |
98 | int get_section_index (struct objfile *, char *); |
99 | ||
00b5771c | 100 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 101 | |
a14ed312 | 102 | static void decrement_reading_symtab (void *); |
c906108c | 103 | |
a14ed312 | 104 | static void overlay_invalidate_all (void); |
c906108c | 105 | |
a14ed312 | 106 | void list_overlays_command (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | void map_overlay_command (char *, int); |
c906108c | 109 | |
a14ed312 | 110 | void unmap_overlay_command (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void overlay_auto_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | static void overlay_manual_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | static void overlay_off_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void overlay_load_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void overlay_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void simple_free_overlay_table (void); |
c906108c | 123 | |
e17a4113 UW |
124 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
125 | enum bfd_endian); | |
c906108c | 126 | |
a14ed312 | 127 | static int simple_read_overlay_table (void); |
c906108c | 128 | |
a14ed312 | 129 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 130 | |
a14ed312 | 131 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 132 | |
a14ed312 | 133 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 134 | |
a14ed312 | 135 | static void init_filename_language_table (void); |
392a587b | 136 | |
31d99776 DJ |
137 | static void symfile_find_segment_sections (struct objfile *objfile); |
138 | ||
a14ed312 | 139 | void _initialize_symfile (void); |
c906108c SS |
140 | |
141 | /* List of all available sym_fns. On gdb startup, each object file reader | |
142 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 143 | prepared to read. */ |
c906108c | 144 | |
00b5771c TT |
145 | typedef const struct sym_fns *sym_fns_ptr; |
146 | DEF_VEC_P (sym_fns_ptr); | |
147 | ||
148 | static VEC (sym_fns_ptr) *symtab_fns = NULL; | |
c906108c SS |
149 | |
150 | /* Flag for whether user will be reloading symbols multiple times. | |
151 | Defaults to ON for VxWorks, otherwise OFF. */ | |
152 | ||
153 | #ifdef SYMBOL_RELOADING_DEFAULT | |
154 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
155 | #else | |
156 | int symbol_reloading = 0; | |
157 | #endif | |
920d2a44 AC |
158 | static void |
159 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
160 | struct cmd_list_element *c, const char *value) | |
161 | { | |
3e43a32a MS |
162 | fprintf_filtered (file, _("Dynamic symbol table reloading " |
163 | "multiple times in one run is %s.\n"), | |
920d2a44 AC |
164 | value); |
165 | } | |
166 | ||
b7209cb4 FF |
167 | /* If non-zero, shared library symbols will be added automatically |
168 | when the inferior is created, new libraries are loaded, or when | |
169 | attaching to the inferior. This is almost always what users will | |
170 | want to have happen; but for very large programs, the startup time | |
171 | will be excessive, and so if this is a problem, the user can clear | |
172 | this flag and then add the shared library symbols as needed. Note | |
173 | that there is a potential for confusion, since if the shared | |
c906108c | 174 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 175 | report all the functions that are actually present. */ |
c906108c SS |
176 | |
177 | int auto_solib_add = 1; | |
c906108c | 178 | \f |
c5aa993b | 179 | |
c906108c SS |
180 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
181 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
c378eb4e | 182 | Note that the string at PTR does not have to be null terminated, I.e. it |
0d14a781 | 183 | may be part of a larger string and we are only saving a substring. */ |
c906108c SS |
184 | |
185 | char * | |
63ca651f | 186 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 187 | { |
52f0bd74 | 188 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
189 | /* Open-coded memcpy--saves function call time. These strings are usually |
190 | short. FIXME: Is this really still true with a compiler that can | |
c378eb4e | 191 | inline memcpy? */ |
c906108c | 192 | { |
aa1ee363 AC |
193 | const char *p1 = ptr; |
194 | char *p2 = p; | |
63ca651f | 195 | const char *end = ptr + size; |
433759f7 | 196 | |
c906108c SS |
197 | while (p1 != end) |
198 | *p2++ = *p1++; | |
199 | } | |
200 | p[size] = 0; | |
201 | return p; | |
202 | } | |
203 | ||
3e43a32a MS |
204 | /* Concatenate NULL terminated variable argument list of `const char *' |
205 | strings; return the new string. Space is found in the OBSTACKP. | |
206 | Argument list must be terminated by a sentinel expression `(char *) | |
207 | NULL'. */ | |
c906108c SS |
208 | |
209 | char * | |
48cb83fd | 210 | obconcat (struct obstack *obstackp, ...) |
c906108c | 211 | { |
48cb83fd JK |
212 | va_list ap; |
213 | ||
214 | va_start (ap, obstackp); | |
215 | for (;;) | |
216 | { | |
217 | const char *s = va_arg (ap, const char *); | |
218 | ||
219 | if (s == NULL) | |
220 | break; | |
221 | ||
222 | obstack_grow_str (obstackp, s); | |
223 | } | |
224 | va_end (ap); | |
225 | obstack_1grow (obstackp, 0); | |
226 | ||
227 | return obstack_finish (obstackp); | |
c906108c SS |
228 | } |
229 | ||
0d14a781 | 230 | /* True if we are reading a symbol table. */ |
c906108c SS |
231 | |
232 | int currently_reading_symtab = 0; | |
233 | ||
234 | static void | |
fba45db2 | 235 | decrement_reading_symtab (void *dummy) |
c906108c SS |
236 | { |
237 | currently_reading_symtab--; | |
238 | } | |
239 | ||
ccefe4c4 TT |
240 | /* Increment currently_reading_symtab and return a cleanup that can be |
241 | used to decrement it. */ | |
242 | struct cleanup * | |
243 | increment_reading_symtab (void) | |
c906108c | 244 | { |
ccefe4c4 TT |
245 | ++currently_reading_symtab; |
246 | return make_cleanup (decrement_reading_symtab, NULL); | |
c906108c SS |
247 | } |
248 | ||
5417f6dc RM |
249 | /* Remember the lowest-addressed loadable section we've seen. |
250 | This function is called via bfd_map_over_sections. | |
c906108c SS |
251 | |
252 | In case of equal vmas, the section with the largest size becomes the | |
253 | lowest-addressed loadable section. | |
254 | ||
255 | If the vmas and sizes are equal, the last section is considered the | |
256 | lowest-addressed loadable section. */ | |
257 | ||
258 | void | |
4efb68b1 | 259 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 260 | { |
c5aa993b | 261 | asection **lowest = (asection **) obj; |
c906108c | 262 | |
eb73e134 | 263 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
264 | return; |
265 | if (!*lowest) | |
266 | *lowest = sect; /* First loadable section */ | |
267 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
268 | *lowest = sect; /* A lower loadable section */ | |
269 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
270 | && (bfd_section_size (abfd, (*lowest)) | |
271 | <= bfd_section_size (abfd, sect))) | |
272 | *lowest = sect; | |
273 | } | |
274 | ||
a39a16c4 MM |
275 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
276 | ||
277 | struct section_addr_info * | |
278 | alloc_section_addr_info (size_t num_sections) | |
279 | { | |
280 | struct section_addr_info *sap; | |
281 | size_t size; | |
282 | ||
283 | size = (sizeof (struct section_addr_info) | |
284 | + sizeof (struct other_sections) * (num_sections - 1)); | |
285 | sap = (struct section_addr_info *) xmalloc (size); | |
286 | memset (sap, 0, size); | |
287 | sap->num_sections = num_sections; | |
288 | ||
289 | return sap; | |
290 | } | |
62557bbc KB |
291 | |
292 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 293 | an existing section table. */ |
62557bbc KB |
294 | |
295 | extern struct section_addr_info * | |
0542c86d PA |
296 | build_section_addr_info_from_section_table (const struct target_section *start, |
297 | const struct target_section *end) | |
62557bbc KB |
298 | { |
299 | struct section_addr_info *sap; | |
0542c86d | 300 | const struct target_section *stp; |
62557bbc KB |
301 | int oidx; |
302 | ||
a39a16c4 | 303 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
304 | |
305 | for (stp = start, oidx = 0; stp != end; stp++) | |
306 | { | |
5417f6dc | 307 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 308 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 309 | && oidx < end - start) |
62557bbc KB |
310 | { |
311 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 312 | sap->other[oidx].name |
fbd35540 | 313 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
314 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
315 | oidx++; | |
316 | } | |
317 | } | |
318 | ||
319 | return sap; | |
320 | } | |
321 | ||
82ccf5a5 | 322 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 323 | |
82ccf5a5 JK |
324 | static struct section_addr_info * |
325 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
326 | { |
327 | struct section_addr_info *sap; | |
328 | int i; | |
329 | struct bfd_section *sec; | |
330 | ||
82ccf5a5 JK |
331 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
332 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
333 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 334 | { |
82ccf5a5 JK |
335 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
336 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
012836ea JK |
337 | sap->other[i].sectindex = sec->index; |
338 | i++; | |
339 | } | |
089b4803 TG |
340 | return sap; |
341 | } | |
342 | ||
82ccf5a5 JK |
343 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
344 | ||
345 | struct section_addr_info * | |
346 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
347 | { | |
348 | struct section_addr_info *sap; | |
349 | int i; | |
350 | ||
351 | /* Before reread_symbols gets rewritten it is not safe to call: | |
352 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
353 | */ | |
354 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
355 | for (i = 0; i < sap->num_sections && sap->other[i].name; i++) | |
356 | { | |
357 | int sectindex = sap->other[i].sectindex; | |
358 | ||
359 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
360 | } | |
361 | return sap; | |
362 | } | |
62557bbc | 363 | |
c378eb4e | 364 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
365 | |
366 | extern void | |
367 | free_section_addr_info (struct section_addr_info *sap) | |
368 | { | |
369 | int idx; | |
370 | ||
a39a16c4 | 371 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 372 | if (sap->other[idx].name) |
b8c9b27d KB |
373 | xfree (sap->other[idx].name); |
374 | xfree (sap); | |
62557bbc KB |
375 | } |
376 | ||
377 | ||
e8289572 JB |
378 | /* Initialize OBJFILE's sect_index_* members. */ |
379 | static void | |
380 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 381 | { |
e8289572 | 382 | asection *sect; |
c906108c | 383 | int i; |
5417f6dc | 384 | |
b8fbeb18 | 385 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 386 | if (sect) |
b8fbeb18 EZ |
387 | objfile->sect_index_text = sect->index; |
388 | ||
389 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 390 | if (sect) |
b8fbeb18 EZ |
391 | objfile->sect_index_data = sect->index; |
392 | ||
393 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 394 | if (sect) |
b8fbeb18 EZ |
395 | objfile->sect_index_bss = sect->index; |
396 | ||
397 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 398 | if (sect) |
b8fbeb18 EZ |
399 | objfile->sect_index_rodata = sect->index; |
400 | ||
bbcd32ad FF |
401 | /* This is where things get really weird... We MUST have valid |
402 | indices for the various sect_index_* members or gdb will abort. | |
403 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
404 | accomodate that. First, check for a file with the standard |
405 | one or two segments. */ | |
406 | ||
407 | symfile_find_segment_sections (objfile); | |
408 | ||
409 | /* Except when explicitly adding symbol files at some address, | |
410 | section_offsets contains nothing but zeros, so it doesn't matter | |
411 | which slot in section_offsets the individual sect_index_* members | |
412 | index into. So if they are all zero, it is safe to just point | |
413 | all the currently uninitialized indices to the first slot. But | |
414 | beware: if this is the main executable, it may be relocated | |
415 | later, e.g. by the remote qOffsets packet, and then this will | |
416 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
417 | |
418 | for (i = 0; i < objfile->num_sections; i++) | |
419 | { | |
420 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
421 | { | |
422 | break; | |
423 | } | |
424 | } | |
425 | if (i == objfile->num_sections) | |
426 | { | |
427 | if (objfile->sect_index_text == -1) | |
428 | objfile->sect_index_text = 0; | |
429 | if (objfile->sect_index_data == -1) | |
430 | objfile->sect_index_data = 0; | |
431 | if (objfile->sect_index_bss == -1) | |
432 | objfile->sect_index_bss = 0; | |
433 | if (objfile->sect_index_rodata == -1) | |
434 | objfile->sect_index_rodata = 0; | |
435 | } | |
b8fbeb18 | 436 | } |
c906108c | 437 | |
c1bd25fd DJ |
438 | /* The arguments to place_section. */ |
439 | ||
440 | struct place_section_arg | |
441 | { | |
442 | struct section_offsets *offsets; | |
443 | CORE_ADDR lowest; | |
444 | }; | |
445 | ||
446 | /* Find a unique offset to use for loadable section SECT if | |
447 | the user did not provide an offset. */ | |
448 | ||
2c0b251b | 449 | static void |
c1bd25fd DJ |
450 | place_section (bfd *abfd, asection *sect, void *obj) |
451 | { | |
452 | struct place_section_arg *arg = obj; | |
453 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
454 | int done; | |
3bd72c6f | 455 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 456 | |
2711e456 DJ |
457 | /* We are only interested in allocated sections. */ |
458 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
459 | return; |
460 | ||
461 | /* If the user specified an offset, honor it. */ | |
462 | if (offsets[sect->index] != 0) | |
463 | return; | |
464 | ||
465 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
466 | start_addr = (arg->lowest + align - 1) & -align; |
467 | ||
c1bd25fd DJ |
468 | do { |
469 | asection *cur_sec; | |
c1bd25fd | 470 | |
c1bd25fd DJ |
471 | done = 1; |
472 | ||
473 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
474 | { | |
475 | int indx = cur_sec->index; | |
c1bd25fd DJ |
476 | |
477 | /* We don't need to compare against ourself. */ | |
478 | if (cur_sec == sect) | |
479 | continue; | |
480 | ||
2711e456 DJ |
481 | /* We can only conflict with allocated sections. */ |
482 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
483 | continue; |
484 | ||
485 | /* If the section offset is 0, either the section has not been placed | |
486 | yet, or it was the lowest section placed (in which case LOWEST | |
487 | will be past its end). */ | |
488 | if (offsets[indx] == 0) | |
489 | continue; | |
490 | ||
491 | /* If this section would overlap us, then we must move up. */ | |
492 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
493 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
494 | { | |
495 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
496 | start_addr = (start_addr + align - 1) & -align; | |
497 | done = 0; | |
3bd72c6f | 498 | break; |
c1bd25fd DJ |
499 | } |
500 | ||
501 | /* Otherwise, we appear to be OK. So far. */ | |
502 | } | |
503 | } | |
504 | while (!done); | |
505 | ||
506 | offsets[sect->index] = start_addr; | |
507 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 508 | } |
e8289572 | 509 | |
75242ef4 JK |
510 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
511 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
512 | entries. */ | |
e8289572 JB |
513 | |
514 | void | |
75242ef4 JK |
515 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
516 | int num_sections, | |
517 | struct section_addr_info *addrs) | |
e8289572 JB |
518 | { |
519 | int i; | |
520 | ||
75242ef4 | 521 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 522 | |
c378eb4e | 523 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 524 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 525 | { |
75242ef4 | 526 | struct other_sections *osp; |
e8289572 | 527 | |
75242ef4 | 528 | osp = &addrs->other[i]; |
5488dafb | 529 | if (osp->sectindex == -1) |
e8289572 JB |
530 | continue; |
531 | ||
c378eb4e | 532 | /* Record all sections in offsets. */ |
e8289572 | 533 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 534 | the BFD index. */ |
75242ef4 JK |
535 | section_offsets->offsets[osp->sectindex] = osp->addr; |
536 | } | |
537 | } | |
538 | ||
1276c759 JK |
539 | /* Transform section name S for a name comparison. prelink can split section |
540 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
541 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
542 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
543 | (`.sbss') section has invalid (increased) virtual address. */ | |
544 | ||
545 | static const char * | |
546 | addr_section_name (const char *s) | |
547 | { | |
548 | if (strcmp (s, ".dynbss") == 0) | |
549 | return ".bss"; | |
550 | if (strcmp (s, ".sdynbss") == 0) | |
551 | return ".sbss"; | |
552 | ||
553 | return s; | |
554 | } | |
555 | ||
82ccf5a5 JK |
556 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
557 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
558 | ||
559 | static int | |
560 | addrs_section_compar (const void *ap, const void *bp) | |
561 | { | |
562 | const struct other_sections *a = *((struct other_sections **) ap); | |
563 | const struct other_sections *b = *((struct other_sections **) bp); | |
564 | int retval, a_idx, b_idx; | |
565 | ||
1276c759 | 566 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
567 | if (retval) |
568 | return retval; | |
569 | ||
5488dafb | 570 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
571 | } |
572 | ||
573 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
574 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
575 | ||
576 | static struct other_sections ** | |
577 | addrs_section_sort (struct section_addr_info *addrs) | |
578 | { | |
579 | struct other_sections **array; | |
580 | int i; | |
581 | ||
582 | /* `+ 1' for the NULL terminator. */ | |
583 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
584 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
585 | array[i] = &addrs->other[i]; | |
586 | array[i] = NULL; | |
587 | ||
588 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
589 | ||
590 | return array; | |
591 | } | |
592 | ||
75242ef4 | 593 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
594 | also SECTINDEXes specific to ABFD there. This function can be used to |
595 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
596 | |
597 | void | |
598 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
599 | { | |
600 | asection *lower_sect; | |
75242ef4 JK |
601 | CORE_ADDR lower_offset; |
602 | int i; | |
82ccf5a5 JK |
603 | struct cleanup *my_cleanup; |
604 | struct section_addr_info *abfd_addrs; | |
605 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
606 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
607 | |
608 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
609 | continguous sections. */ |
610 | lower_sect = NULL; | |
611 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
612 | if (lower_sect == NULL) |
613 | { | |
614 | warning (_("no loadable sections found in added symbol-file %s"), | |
615 | bfd_get_filename (abfd)); | |
616 | lower_offset = 0; | |
e8289572 | 617 | } |
75242ef4 JK |
618 | else |
619 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
620 | ||
82ccf5a5 JK |
621 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
622 | in ABFD. Section names are not unique - there can be multiple sections of | |
623 | the same name. Also the sections of the same name do not have to be | |
624 | adjacent to each other. Some sections may be present only in one of the | |
625 | files. Even sections present in both files do not have to be in the same | |
626 | order. | |
627 | ||
628 | Use stable sort by name for the sections in both files. Then linearly | |
629 | scan both lists matching as most of the entries as possible. */ | |
630 | ||
631 | addrs_sorted = addrs_section_sort (addrs); | |
632 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
633 | ||
634 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
635 | make_cleanup_free_section_addr_info (abfd_addrs); | |
636 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
637 | make_cleanup (xfree, abfd_addrs_sorted); | |
638 | ||
c378eb4e MS |
639 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
640 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
641 | |
642 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
643 | * addrs->num_sections); | |
644 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
645 | ||
646 | while (*addrs_sorted) | |
647 | { | |
1276c759 | 648 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
649 | |
650 | while (*abfd_addrs_sorted | |
1276c759 JK |
651 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
652 | sect_name) < 0) | |
82ccf5a5 JK |
653 | abfd_addrs_sorted++; |
654 | ||
655 | if (*abfd_addrs_sorted | |
1276c759 JK |
656 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
657 | sect_name) == 0) | |
82ccf5a5 JK |
658 | { |
659 | int index_in_addrs; | |
660 | ||
661 | /* Make the found item directly addressable from ADDRS. */ | |
662 | index_in_addrs = *addrs_sorted - addrs->other; | |
663 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
664 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
665 | ||
666 | /* Never use the same ABFD entry twice. */ | |
667 | abfd_addrs_sorted++; | |
668 | } | |
669 | ||
670 | addrs_sorted++; | |
671 | } | |
672 | ||
75242ef4 JK |
673 | /* Calculate offsets for the loadable sections. |
674 | FIXME! Sections must be in order of increasing loadable section | |
675 | so that contiguous sections can use the lower-offset!!! | |
676 | ||
677 | Adjust offsets if the segments are not contiguous. | |
678 | If the section is contiguous, its offset should be set to | |
679 | the offset of the highest loadable section lower than it | |
680 | (the loadable section directly below it in memory). | |
681 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
682 | ||
683 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
684 | { | |
82ccf5a5 | 685 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
686 | |
687 | if (sect) | |
75242ef4 | 688 | { |
c378eb4e | 689 | /* This is the index used by BFD. */ |
82ccf5a5 | 690 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
691 | |
692 | if (addrs->other[i].addr != 0) | |
75242ef4 | 693 | { |
82ccf5a5 | 694 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 695 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
696 | } |
697 | else | |
672d9c23 | 698 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
699 | } |
700 | else | |
672d9c23 | 701 | { |
1276c759 JK |
702 | /* addr_section_name transformation is not used for SECT_NAME. */ |
703 | const char *sect_name = addrs->other[i].name; | |
704 | ||
b0fcb67f JK |
705 | /* This section does not exist in ABFD, which is normally |
706 | unexpected and we want to issue a warning. | |
707 | ||
4d9743af JK |
708 | However, the ELF prelinker does create a few sections which are |
709 | marked in the main executable as loadable (they are loaded in | |
710 | memory from the DYNAMIC segment) and yet are not present in | |
711 | separate debug info files. This is fine, and should not cause | |
712 | a warning. Shared libraries contain just the section | |
713 | ".gnu.liblist" but it is not marked as loadable there. There is | |
714 | no other way to identify them than by their name as the sections | |
1276c759 JK |
715 | created by prelink have no special flags. |
716 | ||
717 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
718 | |
719 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 720 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
721 | || (strcmp (sect_name, ".bss") == 0 |
722 | && i > 0 | |
723 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
724 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
725 | || (strcmp (sect_name, ".sbss") == 0 | |
726 | && i > 0 | |
727 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
728 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
729 | warning (_("section %s not found in %s"), sect_name, |
730 | bfd_get_filename (abfd)); | |
731 | ||
672d9c23 | 732 | addrs->other[i].addr = 0; |
5488dafb | 733 | addrs->other[i].sectindex = -1; |
672d9c23 | 734 | } |
75242ef4 | 735 | } |
82ccf5a5 JK |
736 | |
737 | do_cleanups (my_cleanup); | |
75242ef4 JK |
738 | } |
739 | ||
740 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
741 | of how to represent it for fast symbol reading. This is the default | |
742 | version of the sym_fns.sym_offsets function for symbol readers that | |
743 | don't need to do anything special. It allocates a section_offsets table | |
744 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
745 | ||
746 | void | |
747 | default_symfile_offsets (struct objfile *objfile, | |
748 | struct section_addr_info *addrs) | |
749 | { | |
750 | objfile->num_sections = bfd_count_sections (objfile->obfd); | |
751 | objfile->section_offsets = (struct section_offsets *) | |
752 | obstack_alloc (&objfile->objfile_obstack, | |
753 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
754 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
755 | objfile->num_sections, addrs); | |
e8289572 | 756 | |
c1bd25fd DJ |
757 | /* For relocatable files, all loadable sections will start at zero. |
758 | The zero is meaningless, so try to pick arbitrary addresses such | |
759 | that no loadable sections overlap. This algorithm is quadratic, | |
760 | but the number of sections in a single object file is generally | |
761 | small. */ | |
762 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
763 | { | |
764 | struct place_section_arg arg; | |
2711e456 DJ |
765 | bfd *abfd = objfile->obfd; |
766 | asection *cur_sec; | |
2711e456 DJ |
767 | |
768 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
769 | /* We do not expect this to happen; just skip this step if the | |
770 | relocatable file has a section with an assigned VMA. */ | |
771 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
772 | break; | |
773 | ||
774 | if (cur_sec == NULL) | |
775 | { | |
776 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
777 | ||
778 | /* Pick non-overlapping offsets for sections the user did not | |
779 | place explicitly. */ | |
780 | arg.offsets = objfile->section_offsets; | |
781 | arg.lowest = 0; | |
782 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
783 | ||
784 | /* Correctly filling in the section offsets is not quite | |
785 | enough. Relocatable files have two properties that | |
786 | (most) shared objects do not: | |
787 | ||
788 | - Their debug information will contain relocations. Some | |
789 | shared libraries do also, but many do not, so this can not | |
790 | be assumed. | |
791 | ||
792 | - If there are multiple code sections they will be loaded | |
793 | at different relative addresses in memory than they are | |
794 | in the objfile, since all sections in the file will start | |
795 | at address zero. | |
796 | ||
797 | Because GDB has very limited ability to map from an | |
798 | address in debug info to the correct code section, | |
799 | it relies on adding SECT_OFF_TEXT to things which might be | |
800 | code. If we clear all the section offsets, and set the | |
801 | section VMAs instead, then symfile_relocate_debug_section | |
802 | will return meaningful debug information pointing at the | |
803 | correct sections. | |
804 | ||
805 | GDB has too many different data structures for section | |
806 | addresses - a bfd, objfile, and so_list all have section | |
807 | tables, as does exec_ops. Some of these could probably | |
808 | be eliminated. */ | |
809 | ||
810 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
811 | cur_sec = cur_sec->next) | |
812 | { | |
813 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
814 | continue; | |
815 | ||
816 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
817 | exec_set_section_address (bfd_get_filename (abfd), |
818 | cur_sec->index, | |
30510692 | 819 | offsets[cur_sec->index]); |
2711e456 DJ |
820 | offsets[cur_sec->index] = 0; |
821 | } | |
822 | } | |
c1bd25fd DJ |
823 | } |
824 | ||
e8289572 | 825 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 826 | .rodata sections. */ |
e8289572 JB |
827 | init_objfile_sect_indices (objfile); |
828 | } | |
829 | ||
830 | ||
31d99776 DJ |
831 | /* Divide the file into segments, which are individual relocatable units. |
832 | This is the default version of the sym_fns.sym_segments function for | |
833 | symbol readers that do not have an explicit representation of segments. | |
834 | It assumes that object files do not have segments, and fully linked | |
835 | files have a single segment. */ | |
836 | ||
837 | struct symfile_segment_data * | |
838 | default_symfile_segments (bfd *abfd) | |
839 | { | |
840 | int num_sections, i; | |
841 | asection *sect; | |
842 | struct symfile_segment_data *data; | |
843 | CORE_ADDR low, high; | |
844 | ||
845 | /* Relocatable files contain enough information to position each | |
846 | loadable section independently; they should not be relocated | |
847 | in segments. */ | |
848 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
849 | return NULL; | |
850 | ||
851 | /* Make sure there is at least one loadable section in the file. */ | |
852 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
853 | { | |
854 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
855 | continue; | |
856 | ||
857 | break; | |
858 | } | |
859 | if (sect == NULL) | |
860 | return NULL; | |
861 | ||
862 | low = bfd_get_section_vma (abfd, sect); | |
863 | high = low + bfd_get_section_size (sect); | |
864 | ||
865 | data = XZALLOC (struct symfile_segment_data); | |
866 | data->num_segments = 1; | |
867 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
868 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
869 | ||
870 | num_sections = bfd_count_sections (abfd); | |
871 | data->segment_info = XCALLOC (num_sections, int); | |
872 | ||
873 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
874 | { | |
875 | CORE_ADDR vma; | |
876 | ||
877 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
878 | continue; | |
879 | ||
880 | vma = bfd_get_section_vma (abfd, sect); | |
881 | if (vma < low) | |
882 | low = vma; | |
883 | if (vma + bfd_get_section_size (sect) > high) | |
884 | high = vma + bfd_get_section_size (sect); | |
885 | ||
886 | data->segment_info[i] = 1; | |
887 | } | |
888 | ||
889 | data->segment_bases[0] = low; | |
890 | data->segment_sizes[0] = high - low; | |
891 | ||
892 | return data; | |
893 | } | |
894 | ||
c906108c SS |
895 | /* Process a symbol file, as either the main file or as a dynamically |
896 | loaded file. | |
897 | ||
96baa820 JM |
898 | OBJFILE is where the symbols are to be read from. |
899 | ||
7e8580c1 JB |
900 | ADDRS is the list of section load addresses. If the user has given |
901 | an 'add-symbol-file' command, then this is the list of offsets and | |
902 | addresses he or she provided as arguments to the command; or, if | |
903 | we're handling a shared library, these are the actual addresses the | |
904 | sections are loaded at, according to the inferior's dynamic linker | |
905 | (as gleaned by GDB's shared library code). We convert each address | |
906 | into an offset from the section VMA's as it appears in the object | |
907 | file, and then call the file's sym_offsets function to convert this | |
908 | into a format-specific offset table --- a `struct section_offsets'. | |
909 | If ADDRS is non-zero, OFFSETS must be zero. | |
910 | ||
911 | OFFSETS is a table of section offsets already in the right | |
912 | format-specific representation. NUM_OFFSETS is the number of | |
913 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
914 | assume this is the proper table the call to sym_offsets described | |
915 | above would produce. Instead of calling sym_offsets, we just dump | |
916 | it right into objfile->section_offsets. (When we're re-reading | |
917 | symbols from an objfile, we don't have the original load address | |
918 | list any more; all we have is the section offset table.) If | |
919 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 920 | |
7eedccfa PP |
921 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
922 | an extra symbol file such as dynamically loaded code, and wether | |
923 | breakpoint reset should be deferred. */ | |
c906108c SS |
924 | |
925 | void | |
7e8580c1 JB |
926 | syms_from_objfile (struct objfile *objfile, |
927 | struct section_addr_info *addrs, | |
928 | struct section_offsets *offsets, | |
929 | int num_offsets, | |
7eedccfa | 930 | int add_flags) |
c906108c | 931 | { |
a39a16c4 | 932 | struct section_addr_info *local_addr = NULL; |
c906108c | 933 | struct cleanup *old_chain; |
7eedccfa | 934 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 935 | |
7e8580c1 | 936 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 937 | |
c906108c | 938 | init_entry_point_info (objfile); |
31d99776 | 939 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 940 | |
75245b24 | 941 | if (objfile->sf == NULL) |
c378eb4e | 942 | return; /* No symbols. */ |
75245b24 | 943 | |
c906108c SS |
944 | /* Make sure that partially constructed symbol tables will be cleaned up |
945 | if an error occurs during symbol reading. */ | |
74b7792f | 946 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 947 | |
a39a16c4 MM |
948 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
949 | list. We now establish the convention that an addr of zero means | |
c378eb4e | 950 | no load address was specified. */ |
a39a16c4 MM |
951 | if (! addrs && ! offsets) |
952 | { | |
5417f6dc | 953 | local_addr |
a39a16c4 MM |
954 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
955 | make_cleanup (xfree, local_addr); | |
956 | addrs = local_addr; | |
957 | } | |
958 | ||
959 | /* Now either addrs or offsets is non-zero. */ | |
960 | ||
c5aa993b | 961 | if (mainline) |
c906108c SS |
962 | { |
963 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 964 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 965 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
966 | |
967 | /* Since no error yet, throw away the old symbol table. */ | |
968 | ||
969 | if (symfile_objfile != NULL) | |
970 | { | |
971 | free_objfile (symfile_objfile); | |
adb7f338 | 972 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
973 | } |
974 | ||
975 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
976 | If the user wants to get rid of them, they should do "symbol-file" |
977 | without arguments first. Not sure this is the best behavior | |
978 | (PR 2207). */ | |
c906108c | 979 | |
c5aa993b | 980 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
981 | } |
982 | ||
983 | /* Convert addr into an offset rather than an absolute address. | |
984 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 985 | and assume that <addr> is where that got loaded. |
c906108c | 986 | |
53a5351d JM |
987 | We no longer warn if the lowest section is not a text segment (as |
988 | happens for the PA64 port. */ | |
0d15807d | 989 | if (addrs && addrs->other[0].name) |
75242ef4 | 990 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
991 | |
992 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
993 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 994 | initial symbol reading for this file. */ |
c906108c | 995 | |
c5aa993b | 996 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 997 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 998 | |
7e8580c1 JB |
999 | if (addrs) |
1000 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
1001 | else | |
1002 | { | |
1003 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
1004 | ||
1005 | /* Just copy in the offset table directly as given to us. */ | |
1006 | objfile->num_sections = num_offsets; | |
1007 | objfile->section_offsets | |
1008 | = ((struct section_offsets *) | |
8b92e4d5 | 1009 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
1010 | memcpy (objfile->section_offsets, offsets, size); |
1011 | ||
1012 | init_objfile_sect_indices (objfile); | |
1013 | } | |
c906108c | 1014 | |
f4352531 | 1015 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 1016 | |
b11896a5 TT |
1017 | if ((add_flags & SYMFILE_NO_READ) == 0) |
1018 | require_partial_symbols (objfile, 0); | |
1019 | ||
c906108c SS |
1020 | /* Discard cleanups as symbol reading was successful. */ |
1021 | ||
1022 | discard_cleanups (old_chain); | |
f7545552 | 1023 | xfree (local_addr); |
c906108c SS |
1024 | } |
1025 | ||
1026 | /* Perform required actions after either reading in the initial | |
1027 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1028 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1029 | |
c906108c | 1030 | void |
7eedccfa | 1031 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1032 | { |
c906108c | 1033 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1034 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1035 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1036 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1037 | { |
1038 | /* OK, make it the "real" symbol file. */ | |
1039 | symfile_objfile = objfile; | |
1040 | ||
c1e56572 | 1041 | clear_symtab_users (add_flags); |
c906108c | 1042 | } |
7eedccfa | 1043 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1044 | { |
69de3c6a | 1045 | breakpoint_re_set (); |
c906108c SS |
1046 | } |
1047 | ||
1048 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1049 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1050 | } |
1051 | ||
1052 | /* Process a symbol file, as either the main file or as a dynamically | |
1053 | loaded file. | |
1054 | ||
5417f6dc RM |
1055 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
1056 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 1057 | |
7eedccfa PP |
1058 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1059 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1060 | |
1061 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1062 | syms_from_objfile, above. |
1063 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1064 | |
63524580 JK |
1065 | PARENT is the original objfile if ABFD is a separate debug info file. |
1066 | Otherwise PARENT is NULL. | |
1067 | ||
c906108c | 1068 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1069 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1070 | |
7904e09f | 1071 | static struct objfile * |
7eedccfa PP |
1072 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1073 | int add_flags, | |
7904e09f JB |
1074 | struct section_addr_info *addrs, |
1075 | struct section_offsets *offsets, | |
1076 | int num_offsets, | |
63524580 | 1077 | int flags, struct objfile *parent) |
c906108c SS |
1078 | { |
1079 | struct objfile *objfile; | |
a39a16c4 | 1080 | struct cleanup *my_cleanups; |
5417f6dc | 1081 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1082 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1083 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1084 | const int should_print = ((from_tty || info_verbose) |
1085 | && (readnow_symbol_files | |
1086 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1087 | |
9291a0cd | 1088 | if (readnow_symbol_files) |
b11896a5 TT |
1089 | { |
1090 | flags |= OBJF_READNOW; | |
1091 | add_flags &= ~SYMFILE_NO_READ; | |
1092 | } | |
9291a0cd | 1093 | |
5417f6dc | 1094 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 1095 | |
5417f6dc RM |
1096 | /* Give user a chance to burp if we'd be |
1097 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1098 | |
1099 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1100 | && mainline |
c906108c | 1101 | && from_tty |
9e2f0ad4 | 1102 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1103 | error (_("Not confirmed.")); |
c906108c | 1104 | |
0838fb57 | 1105 | objfile = allocate_objfile (abfd, flags | (mainline ? OBJF_MAINLINE : 0)); |
5417f6dc | 1106 | discard_cleanups (my_cleanups); |
c906108c | 1107 | |
63524580 JK |
1108 | if (parent) |
1109 | add_separate_debug_objfile (objfile, parent); | |
1110 | ||
78a4a9b9 AC |
1111 | /* We either created a new mapped symbol table, mapped an existing |
1112 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1113 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1114 | if (should_print) |
c906108c | 1115 | { |
769d7dc4 AC |
1116 | if (deprecated_pre_add_symbol_hook) |
1117 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1118 | else |
c906108c | 1119 | { |
55333a84 DE |
1120 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1121 | wrap_here (""); | |
1122 | gdb_flush (gdb_stdout); | |
c906108c | 1123 | } |
c906108c | 1124 | } |
78a4a9b9 | 1125 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1126 | add_flags); |
c906108c SS |
1127 | |
1128 | /* We now have at least a partial symbol table. Check to see if the | |
1129 | user requested that all symbols be read on initial access via either | |
1130 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1131 | all partial symbol tables for this objfile if so. */ |
c906108c | 1132 | |
9291a0cd | 1133 | if ((flags & OBJF_READNOW)) |
c906108c | 1134 | { |
b11896a5 | 1135 | if (should_print) |
c906108c | 1136 | { |
a3f17187 | 1137 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1138 | wrap_here (""); |
1139 | gdb_flush (gdb_stdout); | |
1140 | } | |
1141 | ||
ccefe4c4 TT |
1142 | if (objfile->sf) |
1143 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1144 | } |
1145 | ||
b11896a5 | 1146 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1147 | { |
1148 | wrap_here (""); | |
55333a84 | 1149 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1150 | wrap_here (""); |
1151 | } | |
1152 | ||
b11896a5 | 1153 | if (should_print) |
c906108c | 1154 | { |
769d7dc4 AC |
1155 | if (deprecated_post_add_symbol_hook) |
1156 | deprecated_post_add_symbol_hook (); | |
c906108c | 1157 | else |
55333a84 | 1158 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1159 | } |
1160 | ||
481d0f41 JB |
1161 | /* We print some messages regardless of whether 'from_tty || |
1162 | info_verbose' is true, so make sure they go out at the right | |
1163 | time. */ | |
1164 | gdb_flush (gdb_stdout); | |
1165 | ||
109f874e | 1166 | if (objfile->sf == NULL) |
8caee43b PP |
1167 | { |
1168 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1169 | return objfile; /* No symbols. */ |
8caee43b | 1170 | } |
109f874e | 1171 | |
7eedccfa | 1172 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1173 | |
06d3b283 | 1174 | observer_notify_new_objfile (objfile); |
c906108c | 1175 | |
ce7d4522 | 1176 | bfd_cache_close_all (); |
c906108c SS |
1177 | return (objfile); |
1178 | } | |
1179 | ||
9cce227f TG |
1180 | /* Add BFD as a separate debug file for OBJFILE. */ |
1181 | ||
1182 | void | |
1183 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1184 | { | |
15d123c9 | 1185 | struct objfile *new_objfile; |
089b4803 TG |
1186 | struct section_addr_info *sap; |
1187 | struct cleanup *my_cleanup; | |
1188 | ||
1189 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1190 | because sections of BFD may not match sections of OBJFILE and because | |
1191 | vma may have been modified by tools such as prelink. */ | |
1192 | sap = build_section_addr_info_from_objfile (objfile); | |
1193 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1194 | |
15d123c9 | 1195 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1196 | (bfd, symfile_flags, |
089b4803 | 1197 | sap, NULL, 0, |
9cce227f | 1198 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1199 | | OBJF_USERLOADED), |
1200 | objfile); | |
089b4803 TG |
1201 | |
1202 | do_cleanups (my_cleanup); | |
9cce227f | 1203 | } |
7904e09f | 1204 | |
eb4556d7 JB |
1205 | /* Process the symbol file ABFD, as either the main file or as a |
1206 | dynamically loaded file. | |
1207 | ||
1208 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1209 | details. */ | |
1210 | struct objfile * | |
7eedccfa | 1211 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1212 | struct section_addr_info *addrs, |
63524580 | 1213 | int flags, struct objfile *parent) |
eb4556d7 | 1214 | { |
7eedccfa | 1215 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
63524580 | 1216 | flags, parent); |
eb4556d7 JB |
1217 | } |
1218 | ||
1219 | ||
7904e09f JB |
1220 | /* Process a symbol file, as either the main file or as a dynamically |
1221 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1222 | for details. */ | |
1223 | struct objfile * | |
7eedccfa PP |
1224 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1225 | int flags) | |
7904e09f | 1226 | { |
7eedccfa | 1227 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
63524580 | 1228 | flags, NULL); |
7904e09f JB |
1229 | } |
1230 | ||
1231 | ||
d7db6da9 FN |
1232 | /* Call symbol_file_add() with default values and update whatever is |
1233 | affected by the loading of a new main(). | |
1234 | Used when the file is supplied in the gdb command line | |
1235 | and by some targets with special loading requirements. | |
1236 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1237 | argument for the switches that can only be specified in the symbol_file | |
1238 | command itself. */ | |
5417f6dc | 1239 | |
1adeb98a FN |
1240 | void |
1241 | symbol_file_add_main (char *args, int from_tty) | |
1242 | { | |
d7db6da9 FN |
1243 | symbol_file_add_main_1 (args, from_tty, 0); |
1244 | } | |
1245 | ||
1246 | static void | |
1247 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1248 | { | |
7dcd53a0 TT |
1249 | const int add_flags = (current_inferior ()->symfile_flags |
1250 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1251 | ||
7eedccfa | 1252 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1253 | |
d7db6da9 FN |
1254 | /* Getting new symbols may change our opinion about |
1255 | what is frameless. */ | |
1256 | reinit_frame_cache (); | |
1257 | ||
7dcd53a0 TT |
1258 | if ((flags & SYMFILE_NO_READ) == 0) |
1259 | set_initial_language (); | |
1adeb98a FN |
1260 | } |
1261 | ||
1262 | void | |
1263 | symbol_file_clear (int from_tty) | |
1264 | { | |
1265 | if ((have_full_symbols () || have_partial_symbols ()) | |
1266 | && from_tty | |
0430b0d6 AS |
1267 | && (symfile_objfile |
1268 | ? !query (_("Discard symbol table from `%s'? "), | |
1269 | symfile_objfile->name) | |
1270 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1271 | error (_("Not confirmed.")); |
1adeb98a | 1272 | |
0133421a JK |
1273 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1274 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1275 | no_shared_libraries (NULL, from_tty); |
1276 | ||
0133421a JK |
1277 | free_all_objfiles (); |
1278 | ||
adb7f338 | 1279 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1280 | if (from_tty) |
1281 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1282 | } |
1283 | ||
5b5d99cf JB |
1284 | static char * |
1285 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1286 | { | |
1287 | asection *sect; | |
1288 | bfd_size_type debuglink_size; | |
1289 | unsigned long crc32; | |
1290 | char *contents; | |
1291 | int crc_offset; | |
5417f6dc | 1292 | |
5b5d99cf JB |
1293 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1294 | ||
1295 | if (sect == NULL) | |
1296 | return NULL; | |
1297 | ||
1298 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1299 | |
5b5d99cf JB |
1300 | contents = xmalloc (debuglink_size); |
1301 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1302 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1303 | ||
c378eb4e | 1304 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ |
5b5d99cf JB |
1305 | crc_offset = strlen (contents) + 1; |
1306 | crc_offset = (crc_offset + 3) & ~3; | |
1307 | ||
1308 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1309 | |
5b5d99cf JB |
1310 | *crc32_out = crc32; |
1311 | return contents; | |
1312 | } | |
1313 | ||
904578ed JK |
1314 | /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and |
1315 | return 1. Otherwise print a warning and return 0. ABFD seek position is | |
1316 | not preserved. */ | |
1317 | ||
1318 | static int | |
1319 | get_file_crc (bfd *abfd, unsigned long *file_crc_return) | |
1320 | { | |
1321 | unsigned long file_crc = 0; | |
1322 | ||
1323 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
1324 | { | |
1325 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1326 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | for (;;) | |
1331 | { | |
1332 | gdb_byte buffer[8 * 1024]; | |
1333 | bfd_size_type count; | |
1334 | ||
1335 | count = bfd_bread (buffer, sizeof (buffer), abfd); | |
1336 | if (count == (bfd_size_type) -1) | |
1337 | { | |
1338 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1339 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1340 | return 0; | |
1341 | } | |
1342 | if (count == 0) | |
1343 | break; | |
1344 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1345 | } | |
1346 | ||
1347 | *file_crc_return = file_crc; | |
1348 | return 1; | |
1349 | } | |
1350 | ||
5b5d99cf | 1351 | static int |
287ccc17 | 1352 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1353 | struct objfile *parent_objfile) |
5b5d99cf | 1354 | { |
904578ed JK |
1355 | unsigned long file_crc; |
1356 | int file_crc_p; | |
f1838a98 | 1357 | bfd *abfd; |
32a0e547 | 1358 | struct stat parent_stat, abfd_stat; |
904578ed | 1359 | int verified_as_different; |
32a0e547 JK |
1360 | |
1361 | /* Find a separate debug info file as if symbols would be present in | |
1362 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1363 | section can contain just the basename of PARENT_OBJFILE without any | |
1364 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1365 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1366 | |
0ba1096a | 1367 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1368 | return 0; |
5b5d99cf | 1369 | |
874f5765 | 1370 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1371 | |
1372 | if (!abfd) | |
5b5d99cf JB |
1373 | return 0; |
1374 | ||
0ba1096a | 1375 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1376 | |
1377 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1378 | st_ino; they always set it to zero. (Windows does provide a | |
1379 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1380 | case. While there is no guarantee that a system that provides | |
1381 | meaningful inode numbers will never set st_ino to zero, this is | |
1382 | merely an optimization, so we do not need to worry about false | |
1383 | negatives. */ | |
1384 | ||
1385 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1386 | && abfd_stat.st_ino != 0 |
1387 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1388 | { |
904578ed JK |
1389 | if (abfd_stat.st_dev == parent_stat.st_dev |
1390 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1391 | { | |
1392 | bfd_close (abfd); | |
1393 | return 0; | |
1394 | } | |
1395 | verified_as_different = 1; | |
32a0e547 | 1396 | } |
904578ed JK |
1397 | else |
1398 | verified_as_different = 0; | |
32a0e547 | 1399 | |
904578ed | 1400 | file_crc_p = get_file_crc (abfd, &file_crc); |
5b5d99cf | 1401 | |
f1838a98 | 1402 | bfd_close (abfd); |
5b5d99cf | 1403 | |
904578ed JK |
1404 | if (!file_crc_p) |
1405 | return 0; | |
1406 | ||
287ccc17 JK |
1407 | if (crc != file_crc) |
1408 | { | |
904578ed JK |
1409 | /* If one (or both) the files are accessed for example the via "remote:" |
1410 | gdbserver way it does not support the bfd_stat operation. Verify | |
1411 | whether those two files are not the same manually. */ | |
1412 | ||
1413 | if (!verified_as_different && !parent_objfile->crc32_p) | |
1414 | { | |
1415 | parent_objfile->crc32_p = get_file_crc (parent_objfile->obfd, | |
1416 | &parent_objfile->crc32); | |
1417 | if (!parent_objfile->crc32_p) | |
1418 | return 0; | |
1419 | } | |
1420 | ||
0e8aefe7 | 1421 | if (verified_as_different || parent_objfile->crc32 != file_crc) |
904578ed JK |
1422 | warning (_("the debug information found in \"%s\"" |
1423 | " does not match \"%s\" (CRC mismatch).\n"), | |
1424 | name, parent_objfile->name); | |
1425 | ||
287ccc17 JK |
1426 | return 0; |
1427 | } | |
1428 | ||
1429 | return 1; | |
5b5d99cf JB |
1430 | } |
1431 | ||
aa28a74e | 1432 | char *debug_file_directory = NULL; |
920d2a44 AC |
1433 | static void |
1434 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1435 | struct cmd_list_element *c, const char *value) | |
1436 | { | |
3e43a32a MS |
1437 | fprintf_filtered (file, |
1438 | _("The directory where separate debug " | |
1439 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1440 | value); |
1441 | } | |
5b5d99cf JB |
1442 | |
1443 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1444 | #define DEBUG_SUBDIRECTORY ".debug" | |
1445 | #endif | |
1446 | ||
1db33378 PP |
1447 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1448 | where the original file resides (may not be the same as | |
1449 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
1450 | looking for. Returns the name of the debuginfo, of NULL. */ | |
1451 | ||
1452 | static char * | |
1453 | find_separate_debug_file (const char *dir, | |
1454 | const char *canon_dir, | |
1455 | const char *debuglink, | |
1456 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1457 | { |
1db33378 PP |
1458 | char *debugdir; |
1459 | char *debugfile; | |
9cce227f | 1460 | int i; |
5b5d99cf | 1461 | |
1db33378 | 1462 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1463 | i = strlen (dir); |
1db33378 PP |
1464 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1465 | i = strlen (canon_dir); | |
1ffa32ee | 1466 | |
25522fae JK |
1467 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1468 | + i | |
1469 | + strlen (DEBUG_SUBDIRECTORY) | |
1470 | + strlen ("/") | |
1db33378 | 1471 | + strlen (debuglink) |
25522fae | 1472 | + 1); |
5b5d99cf JB |
1473 | |
1474 | /* First try in the same directory as the original file. */ | |
1475 | strcpy (debugfile, dir); | |
1db33378 | 1476 | strcat (debugfile, debuglink); |
5b5d99cf | 1477 | |
32a0e547 | 1478 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1479 | return debugfile; |
5417f6dc | 1480 | |
5b5d99cf JB |
1481 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1482 | strcpy (debugfile, dir); | |
1483 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1484 | strcat (debugfile, "/"); | |
1db33378 | 1485 | strcat (debugfile, debuglink); |
5b5d99cf | 1486 | |
32a0e547 | 1487 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1488 | return debugfile; |
5417f6dc | 1489 | |
24ddea62 | 1490 | /* Then try in the global debugfile directories. |
f888f159 | 1491 | |
24ddea62 JK |
1492 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1493 | cause "/..." lookups. */ | |
5417f6dc | 1494 | |
24ddea62 JK |
1495 | debugdir = debug_file_directory; |
1496 | do | |
aa28a74e | 1497 | { |
24ddea62 JK |
1498 | char *debugdir_end; |
1499 | ||
1500 | while (*debugdir == DIRNAME_SEPARATOR) | |
1501 | debugdir++; | |
1502 | ||
1503 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1504 | if (debugdir_end == NULL) | |
1505 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1506 | ||
1507 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1508 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1509 | strcat (debugfile, "/"); |
24ddea62 | 1510 | strcat (debugfile, dir); |
1db33378 | 1511 | strcat (debugfile, debuglink); |
aa28a74e | 1512 | |
32a0e547 | 1513 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1514 | return debugfile; |
24ddea62 JK |
1515 | |
1516 | /* If the file is in the sysroot, try using its base path in the | |
1517 | global debugfile directory. */ | |
1db33378 PP |
1518 | if (canon_dir != NULL |
1519 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1520 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1521 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 JK |
1522 | { |
1523 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1524 | debugfile[debugdir_end - debugdir] = 0; | |
1db33378 | 1525 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1526 | strcat (debugfile, "/"); |
1db33378 | 1527 | strcat (debugfile, debuglink); |
24ddea62 | 1528 | |
32a0e547 | 1529 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1530 | return debugfile; |
24ddea62 JK |
1531 | } |
1532 | ||
1533 | debugdir = debugdir_end; | |
aa28a74e | 1534 | } |
24ddea62 | 1535 | while (*debugdir != 0); |
f888f159 | 1536 | |
25522fae | 1537 | xfree (debugfile); |
1db33378 PP |
1538 | return NULL; |
1539 | } | |
1540 | ||
1541 | /* Modify PATH to contain only "directory/" part of PATH. | |
1542 | If there were no directory separators in PATH, PATH will be empty | |
1543 | string on return. */ | |
1544 | ||
1545 | static void | |
1546 | terminate_after_last_dir_separator (char *path) | |
1547 | { | |
1548 | int i; | |
1549 | ||
1550 | /* Strip off the final filename part, leaving the directory name, | |
1551 | followed by a slash. The directory can be relative or absolute. */ | |
1552 | for (i = strlen(path) - 1; i >= 0; i--) | |
1553 | if (IS_DIR_SEPARATOR (path[i])) | |
1554 | break; | |
1555 | ||
1556 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1557 | path[i + 1] = '\0'; | |
1558 | } | |
1559 | ||
1560 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1561 | Returns pathname, or NULL. */ | |
1562 | ||
1563 | char * | |
1564 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1565 | { | |
1566 | char *debuglink; | |
1567 | char *dir, *canon_dir; | |
1568 | char *debugfile; | |
1569 | unsigned long crc32; | |
1570 | struct cleanup *cleanups; | |
1571 | ||
1572 | debuglink = get_debug_link_info (objfile, &crc32); | |
1573 | ||
1574 | if (debuglink == NULL) | |
1575 | { | |
1576 | /* There's no separate debug info, hence there's no way we could | |
1577 | load it => no warning. */ | |
1578 | return NULL; | |
1579 | } | |
1580 | ||
1581 | dir = xstrdup (objfile->name); | |
1582 | cleanups = make_cleanup (xfree, dir); | |
1583 | terminate_after_last_dir_separator (dir); | |
1584 | canon_dir = lrealpath (dir); | |
1585 | ||
1586 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1587 | crc32, objfile); | |
1588 | xfree (canon_dir); | |
1589 | ||
1590 | if (debugfile == NULL) | |
1591 | { | |
1592 | #ifdef HAVE_LSTAT | |
1593 | /* For PR gdb/9538, try again with realpath (if different from the | |
1594 | original). */ | |
1595 | ||
1596 | struct stat st_buf; | |
1597 | ||
1598 | if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode)) | |
1599 | { | |
1600 | char *symlink_dir; | |
1601 | ||
1602 | symlink_dir = lrealpath (objfile->name); | |
1603 | if (symlink_dir != NULL) | |
1604 | { | |
1605 | make_cleanup (xfree, symlink_dir); | |
1606 | terminate_after_last_dir_separator (symlink_dir); | |
1607 | if (strcmp (dir, symlink_dir) != 0) | |
1608 | { | |
1609 | /* Different directory, so try using it. */ | |
1610 | debugfile = find_separate_debug_file (symlink_dir, | |
1611 | symlink_dir, | |
1612 | debuglink, | |
1613 | crc32, | |
1614 | objfile); | |
1615 | } | |
1616 | } | |
1617 | } | |
1618 | #endif /* HAVE_LSTAT */ | |
1619 | } | |
aa28a74e | 1620 | |
1db33378 | 1621 | do_cleanups (cleanups); |
25522fae | 1622 | return debugfile; |
5b5d99cf JB |
1623 | } |
1624 | ||
1625 | ||
c906108c SS |
1626 | /* This is the symbol-file command. Read the file, analyze its |
1627 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1628 | the command is rather bizarre: |
1629 | ||
1630 | 1. The function buildargv implements various quoting conventions | |
1631 | which are undocumented and have little or nothing in common with | |
1632 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1633 | ||
1634 | 2. Options are used, which are not generally used in GDB (perhaps | |
1635 | "set mapped on", "set readnow on" would be better) | |
1636 | ||
1637 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1638 | conventions (because it is confusing and inconvenient). */ |
1639 | ||
1640 | void | |
fba45db2 | 1641 | symbol_file_command (char *args, int from_tty) |
c906108c | 1642 | { |
c906108c SS |
1643 | dont_repeat (); |
1644 | ||
1645 | if (args == NULL) | |
1646 | { | |
1adeb98a | 1647 | symbol_file_clear (from_tty); |
c906108c SS |
1648 | } |
1649 | else | |
1650 | { | |
d1a41061 | 1651 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1652 | int flags = OBJF_USERLOADED; |
1653 | struct cleanup *cleanups; | |
1654 | char *name = NULL; | |
1655 | ||
7a292a7a | 1656 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1657 | while (*argv != NULL) |
1658 | { | |
78a4a9b9 AC |
1659 | if (strcmp (*argv, "-readnow") == 0) |
1660 | flags |= OBJF_READNOW; | |
1661 | else if (**argv == '-') | |
8a3fe4f8 | 1662 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1663 | else |
1664 | { | |
cb2f3a29 | 1665 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1666 | name = *argv; |
78a4a9b9 | 1667 | } |
cb2f3a29 | 1668 | |
c906108c SS |
1669 | argv++; |
1670 | } | |
1671 | ||
1672 | if (name == NULL) | |
cb2f3a29 MK |
1673 | error (_("no symbol file name was specified")); |
1674 | ||
c906108c SS |
1675 | do_cleanups (cleanups); |
1676 | } | |
1677 | } | |
1678 | ||
1679 | /* Set the initial language. | |
1680 | ||
cb2f3a29 MK |
1681 | FIXME: A better solution would be to record the language in the |
1682 | psymtab when reading partial symbols, and then use it (if known) to | |
1683 | set the language. This would be a win for formats that encode the | |
1684 | language in an easily discoverable place, such as DWARF. For | |
1685 | stabs, we can jump through hoops looking for specially named | |
1686 | symbols or try to intuit the language from the specific type of | |
1687 | stabs we find, but we can't do that until later when we read in | |
1688 | full symbols. */ | |
c906108c | 1689 | |
8b60591b | 1690 | void |
fba45db2 | 1691 | set_initial_language (void) |
c906108c | 1692 | { |
c5aa993b | 1693 | enum language lang = language_unknown; |
c906108c | 1694 | |
01f8c46d JK |
1695 | if (language_of_main != language_unknown) |
1696 | lang = language_of_main; | |
1697 | else | |
1698 | { | |
1699 | const char *filename; | |
f888f159 | 1700 | |
01f8c46d JK |
1701 | filename = find_main_filename (); |
1702 | if (filename != NULL) | |
1703 | lang = deduce_language_from_filename (filename); | |
1704 | } | |
cb2f3a29 | 1705 | |
ccefe4c4 TT |
1706 | if (lang == language_unknown) |
1707 | { | |
1708 | /* Make C the default language */ | |
1709 | lang = language_c; | |
c906108c | 1710 | } |
ccefe4c4 TT |
1711 | |
1712 | set_language (lang); | |
1713 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1714 | } |
1715 | ||
874f5765 TG |
1716 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1717 | open it normally. */ | |
1718 | ||
1719 | bfd * | |
1720 | bfd_open_maybe_remote (const char *name) | |
1721 | { | |
1722 | if (remote_filename_p (name)) | |
1723 | return remote_bfd_open (name, gnutarget); | |
1724 | else | |
1725 | return bfd_openr (name, gnutarget); | |
1726 | } | |
1727 | ||
1728 | ||
cb2f3a29 MK |
1729 | /* Open the file specified by NAME and hand it off to BFD for |
1730 | preliminary analysis. Return a newly initialized bfd *, which | |
1731 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1732 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1733 | |
1734 | bfd * | |
fba45db2 | 1735 | symfile_bfd_open (char *name) |
c906108c SS |
1736 | { |
1737 | bfd *sym_bfd; | |
1738 | int desc; | |
1739 | char *absolute_name; | |
1740 | ||
f1838a98 UW |
1741 | if (remote_filename_p (name)) |
1742 | { | |
1743 | name = xstrdup (name); | |
1744 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1745 | if (!sym_bfd) | |
1746 | { | |
1747 | make_cleanup (xfree, name); | |
1748 | error (_("`%s': can't open to read symbols: %s."), name, | |
1749 | bfd_errmsg (bfd_get_error ())); | |
1750 | } | |
1751 | ||
1752 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1753 | { | |
1754 | bfd_close (sym_bfd); | |
1755 | make_cleanup (xfree, name); | |
1756 | error (_("`%s': can't read symbols: %s."), name, | |
1757 | bfd_errmsg (bfd_get_error ())); | |
1758 | } | |
1759 | ||
1760 | return sym_bfd; | |
1761 | } | |
1762 | ||
cb2f3a29 | 1763 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1764 | |
1765 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1766 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1767 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1768 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1769 | if (desc < 0) |
1770 | { | |
1771 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1772 | |
c906108c | 1773 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1774 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1775 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1776 | } |
1777 | #endif | |
1778 | if (desc < 0) | |
1779 | { | |
b8c9b27d | 1780 | make_cleanup (xfree, name); |
c906108c SS |
1781 | perror_with_name (name); |
1782 | } | |
cb2f3a29 MK |
1783 | |
1784 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
c378eb4e | 1785 | bfd. It'll be freed in free_objfile(). */ |
cb2f3a29 MK |
1786 | xfree (name); |
1787 | name = absolute_name; | |
c906108c | 1788 | |
9f76c2cd | 1789 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1790 | if (!sym_bfd) |
1791 | { | |
1792 | close (desc); | |
b8c9b27d | 1793 | make_cleanup (xfree, name); |
f1838a98 | 1794 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1795 | bfd_errmsg (bfd_get_error ())); |
1796 | } | |
549c1eea | 1797 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1798 | |
1799 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1800 | { | |
cb2f3a29 MK |
1801 | /* FIXME: should be checking for errors from bfd_close (for one |
1802 | thing, on error it does not free all the storage associated | |
1803 | with the bfd). */ | |
1804 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1805 | make_cleanup (xfree, name); |
f1838a98 | 1806 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1807 | bfd_errmsg (bfd_get_error ())); |
1808 | } | |
cb2f3a29 | 1809 | |
4f6f9936 JK |
1810 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1811 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1812 | ||
cb2f3a29 | 1813 | return sym_bfd; |
c906108c SS |
1814 | } |
1815 | ||
cb2f3a29 MK |
1816 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1817 | the section was not found. */ | |
1818 | ||
0e931cf0 JB |
1819 | int |
1820 | get_section_index (struct objfile *objfile, char *section_name) | |
1821 | { | |
1822 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1823 | |
0e931cf0 JB |
1824 | if (sect) |
1825 | return sect->index; | |
1826 | else | |
1827 | return -1; | |
1828 | } | |
1829 | ||
cb2f3a29 MK |
1830 | /* Link SF into the global symtab_fns list. Called on startup by the |
1831 | _initialize routine in each object file format reader, to register | |
b021a221 | 1832 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1833 | |
1834 | void | |
00b5771c | 1835 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1836 | { |
00b5771c | 1837 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1838 | } |
1839 | ||
cb2f3a29 MK |
1840 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1841 | either returns or calls error(). The result is an initialized | |
1842 | struct sym_fns in the objfile structure, that contains cached | |
1843 | information about the symbol file. */ | |
c906108c | 1844 | |
00b5771c | 1845 | static const struct sym_fns * |
31d99776 | 1846 | find_sym_fns (bfd *abfd) |
c906108c | 1847 | { |
00b5771c | 1848 | const struct sym_fns *sf; |
31d99776 | 1849 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1850 | int i; |
c906108c | 1851 | |
75245b24 MS |
1852 | if (our_flavour == bfd_target_srec_flavour |
1853 | || our_flavour == bfd_target_ihex_flavour | |
1854 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1855 | return NULL; /* No symbols. */ |
75245b24 | 1856 | |
00b5771c | 1857 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1858 | if (our_flavour == sf->sym_flavour) |
1859 | return sf; | |
cb2f3a29 | 1860 | |
8a3fe4f8 | 1861 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1862 | bfd_get_target (abfd)); |
c906108c SS |
1863 | } |
1864 | \f | |
cb2f3a29 | 1865 | |
c906108c SS |
1866 | /* This function runs the load command of our current target. */ |
1867 | ||
1868 | static void | |
fba45db2 | 1869 | load_command (char *arg, int from_tty) |
c906108c | 1870 | { |
e5cc9f32 JB |
1871 | dont_repeat (); |
1872 | ||
4487aabf PA |
1873 | /* The user might be reloading because the binary has changed. Take |
1874 | this opportunity to check. */ | |
1875 | reopen_exec_file (); | |
1876 | reread_symbols (); | |
1877 | ||
c906108c | 1878 | if (arg == NULL) |
1986bccd AS |
1879 | { |
1880 | char *parg; | |
1881 | int count = 0; | |
1882 | ||
1883 | parg = arg = get_exec_file (1); | |
1884 | ||
1885 | /* Count how many \ " ' tab space there are in the name. */ | |
1886 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1887 | { | |
1888 | parg++; | |
1889 | count++; | |
1890 | } | |
1891 | ||
1892 | if (count) | |
1893 | { | |
1894 | /* We need to quote this string so buildargv can pull it apart. */ | |
1895 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1896 | char *ptemp = temp; | |
1897 | char *prev; | |
1898 | ||
1899 | make_cleanup (xfree, temp); | |
1900 | ||
1901 | prev = parg = arg; | |
1902 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1903 | { | |
1904 | strncpy (ptemp, prev, parg - prev); | |
1905 | ptemp += parg - prev; | |
1906 | prev = parg++; | |
1907 | *ptemp++ = '\\'; | |
1908 | } | |
1909 | strcpy (ptemp, prev); | |
1910 | ||
1911 | arg = temp; | |
1912 | } | |
1913 | } | |
1914 | ||
c906108c | 1915 | target_load (arg, from_tty); |
2889e661 JB |
1916 | |
1917 | /* After re-loading the executable, we don't really know which | |
1918 | overlays are mapped any more. */ | |
1919 | overlay_cache_invalid = 1; | |
c906108c SS |
1920 | } |
1921 | ||
1922 | /* This version of "load" should be usable for any target. Currently | |
1923 | it is just used for remote targets, not inftarg.c or core files, | |
1924 | on the theory that only in that case is it useful. | |
1925 | ||
1926 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1927 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1928 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1929 | performance compares. */ | |
917317f4 | 1930 | |
917317f4 JM |
1931 | static int validate_download = 0; |
1932 | ||
e4f9b4d5 MS |
1933 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1934 | ||
1935 | static void | |
1936 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1937 | { | |
1938 | bfd_size_type *sum = data; | |
1939 | ||
2c500098 | 1940 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1941 | } |
1942 | ||
1943 | /* Opaque data for load_section_callback. */ | |
1944 | struct load_section_data { | |
1945 | unsigned long load_offset; | |
a76d924d DJ |
1946 | struct load_progress_data *progress_data; |
1947 | VEC(memory_write_request_s) *requests; | |
1948 | }; | |
1949 | ||
1950 | /* Opaque data for load_progress. */ | |
1951 | struct load_progress_data { | |
1952 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1953 | unsigned long write_count; |
1954 | unsigned long data_count; | |
1955 | bfd_size_type total_size; | |
a76d924d DJ |
1956 | }; |
1957 | ||
1958 | /* Opaque data for load_progress for a single section. */ | |
1959 | struct load_progress_section_data { | |
1960 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1961 | |
a76d924d | 1962 | /* Per-section data. */ |
cf7a04e8 DJ |
1963 | const char *section_name; |
1964 | ULONGEST section_sent; | |
1965 | ULONGEST section_size; | |
1966 | CORE_ADDR lma; | |
1967 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1968 | }; |
1969 | ||
a76d924d | 1970 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1971 | |
1972 | static void | |
1973 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1974 | { | |
a76d924d DJ |
1975 | struct load_progress_section_data *args = untyped_arg; |
1976 | struct load_progress_data *totals; | |
1977 | ||
1978 | if (args == NULL) | |
1979 | /* Writing padding data. No easy way to get at the cumulative | |
1980 | stats, so just ignore this. */ | |
1981 | return; | |
1982 | ||
1983 | totals = args->cumulative; | |
1984 | ||
1985 | if (bytes == 0 && args->section_sent == 0) | |
1986 | { | |
1987 | /* The write is just starting. Let the user know we've started | |
1988 | this section. */ | |
79a45e25 | 1989 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 UW |
1990 | args->section_name, hex_string (args->section_size), |
1991 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1992 | return; |
1993 | } | |
cf7a04e8 DJ |
1994 | |
1995 | if (validate_download) | |
1996 | { | |
1997 | /* Broken memories and broken monitors manifest themselves here | |
1998 | when bring new computers to life. This doubles already slow | |
1999 | downloads. */ | |
2000 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
2001 | might add a verify_memory() method to the target vector and | |
2002 | then use that. remote.c could implement that method using | |
2003 | the ``qCRC'' packet. */ | |
2004 | gdb_byte *check = xmalloc (bytes); | |
2005 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
2006 | ||
2007 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
2008 | error (_("Download verify read failed at %s"), |
2009 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 2010 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
2011 | error (_("Download verify compare failed at %s"), |
2012 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
2013 | do_cleanups (verify_cleanups); |
2014 | } | |
a76d924d | 2015 | totals->data_count += bytes; |
cf7a04e8 DJ |
2016 | args->lma += bytes; |
2017 | args->buffer += bytes; | |
a76d924d | 2018 | totals->write_count += 1; |
cf7a04e8 DJ |
2019 | args->section_sent += bytes; |
2020 | if (quit_flag | |
2021 | || (deprecated_ui_load_progress_hook != NULL | |
2022 | && deprecated_ui_load_progress_hook (args->section_name, | |
2023 | args->section_sent))) | |
2024 | error (_("Canceled the download")); | |
2025 | ||
2026 | if (deprecated_show_load_progress != NULL) | |
2027 | deprecated_show_load_progress (args->section_name, | |
2028 | args->section_sent, | |
2029 | args->section_size, | |
a76d924d DJ |
2030 | totals->data_count, |
2031 | totals->total_size); | |
cf7a04e8 DJ |
2032 | } |
2033 | ||
e4f9b4d5 MS |
2034 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2035 | ||
2036 | static void | |
2037 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2038 | { | |
a76d924d | 2039 | struct memory_write_request *new_request; |
e4f9b4d5 | 2040 | struct load_section_data *args = data; |
a76d924d | 2041 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
2042 | bfd_size_type size = bfd_get_section_size (asec); |
2043 | gdb_byte *buffer; | |
cf7a04e8 | 2044 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2045 | |
cf7a04e8 DJ |
2046 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2047 | return; | |
e4f9b4d5 | 2048 | |
cf7a04e8 DJ |
2049 | if (size == 0) |
2050 | return; | |
e4f9b4d5 | 2051 | |
a76d924d DJ |
2052 | new_request = VEC_safe_push (memory_write_request_s, |
2053 | args->requests, NULL); | |
2054 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
2055 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
2056 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
2057 | new_request->end = new_request->begin + size; /* FIXME Should size |
2058 | be in instead? */ | |
a76d924d DJ |
2059 | new_request->data = xmalloc (size); |
2060 | new_request->baton = section_data; | |
cf7a04e8 | 2061 | |
a76d924d | 2062 | buffer = new_request->data; |
cf7a04e8 | 2063 | |
a76d924d DJ |
2064 | section_data->cumulative = args->progress_data; |
2065 | section_data->section_name = sect_name; | |
2066 | section_data->section_size = size; | |
2067 | section_data->lma = new_request->begin; | |
2068 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2069 | |
2070 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2071 | } |
2072 | ||
2073 | /* Clean up an entire memory request vector, including load | |
2074 | data and progress records. */ | |
cf7a04e8 | 2075 | |
a76d924d DJ |
2076 | static void |
2077 | clear_memory_write_data (void *arg) | |
2078 | { | |
2079 | VEC(memory_write_request_s) **vec_p = arg; | |
2080 | VEC(memory_write_request_s) *vec = *vec_p; | |
2081 | int i; | |
2082 | struct memory_write_request *mr; | |
cf7a04e8 | 2083 | |
a76d924d DJ |
2084 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2085 | { | |
2086 | xfree (mr->data); | |
2087 | xfree (mr->baton); | |
2088 | } | |
2089 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2090 | } |
2091 | ||
c906108c | 2092 | void |
917317f4 | 2093 | generic_load (char *args, int from_tty) |
c906108c | 2094 | { |
c906108c | 2095 | bfd *loadfile_bfd; |
2b71414d | 2096 | struct timeval start_time, end_time; |
917317f4 | 2097 | char *filename; |
1986bccd | 2098 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2099 | struct load_section_data cbdata; |
a76d924d | 2100 | struct load_progress_data total_progress; |
79a45e25 | 2101 | struct ui_out *uiout = current_uiout; |
a76d924d | 2102 | |
e4f9b4d5 | 2103 | CORE_ADDR entry; |
1986bccd | 2104 | char **argv; |
e4f9b4d5 | 2105 | |
a76d924d DJ |
2106 | memset (&cbdata, 0, sizeof (cbdata)); |
2107 | memset (&total_progress, 0, sizeof (total_progress)); | |
2108 | cbdata.progress_data = &total_progress; | |
2109 | ||
2110 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2111 | |
d1a41061 PP |
2112 | if (args == NULL) |
2113 | error_no_arg (_("file to load")); | |
1986bccd | 2114 | |
d1a41061 | 2115 | argv = gdb_buildargv (args); |
1986bccd AS |
2116 | make_cleanup_freeargv (argv); |
2117 | ||
2118 | filename = tilde_expand (argv[0]); | |
2119 | make_cleanup (xfree, filename); | |
2120 | ||
2121 | if (argv[1] != NULL) | |
917317f4 JM |
2122 | { |
2123 | char *endptr; | |
ba5f2f8a | 2124 | |
1986bccd AS |
2125 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
2126 | ||
2127 | /* If the last word was not a valid number then | |
2128 | treat it as a file name with spaces in. */ | |
2129 | if (argv[1] == endptr) | |
2130 | error (_("Invalid download offset:%s."), argv[1]); | |
2131 | ||
2132 | if (argv[2] != NULL) | |
2133 | error (_("Too many parameters.")); | |
917317f4 | 2134 | } |
c906108c | 2135 | |
c378eb4e | 2136 | /* Open the file for loading. */ |
c906108c SS |
2137 | loadfile_bfd = bfd_openr (filename, gnutarget); |
2138 | if (loadfile_bfd == NULL) | |
2139 | { | |
2140 | perror_with_name (filename); | |
2141 | return; | |
2142 | } | |
917317f4 | 2143 | |
c906108c SS |
2144 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
2145 | on error it does not free all the storage associated with the | |
2146 | bfd). */ | |
5c65bbb6 | 2147 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 2148 | |
c5aa993b | 2149 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2150 | { |
8a3fe4f8 | 2151 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2152 | bfd_errmsg (bfd_get_error ())); |
2153 | } | |
c5aa993b | 2154 | |
5417f6dc | 2155 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2156 | (void *) &total_progress.total_size); |
2157 | ||
2158 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2159 | |
2b71414d | 2160 | gettimeofday (&start_time, NULL); |
c906108c | 2161 | |
a76d924d DJ |
2162 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2163 | load_progress) != 0) | |
2164 | error (_("Load failed")); | |
c906108c | 2165 | |
2b71414d | 2166 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2167 | |
e4f9b4d5 | 2168 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2169 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2170 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2171 | ui_out_text (uiout, ", load size "); |
a76d924d | 2172 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2173 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2174 | /* We were doing this in remote-mips.c, I suspect it is right |
2175 | for other targets too. */ | |
fb14de7b | 2176 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2177 | |
38963c97 DJ |
2178 | /* Reset breakpoints, now that we have changed the load image. For |
2179 | instance, breakpoints may have been set (or reset, by | |
2180 | post_create_inferior) while connected to the target but before we | |
2181 | loaded the program. In that case, the prologue analyzer could | |
2182 | have read instructions from the target to find the right | |
2183 | breakpoint locations. Loading has changed the contents of that | |
2184 | memory. */ | |
2185 | ||
2186 | breakpoint_re_set (); | |
2187 | ||
7ca9f392 AC |
2188 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2189 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2190 | was commented out), making the call confuses GDB if more than one | |
2191 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2192 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2193 | |
a76d924d DJ |
2194 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2195 | total_progress.write_count, | |
2196 | &start_time, &end_time); | |
c906108c SS |
2197 | |
2198 | do_cleanups (old_cleanups); | |
2199 | } | |
2200 | ||
c378eb4e | 2201 | /* Report how fast the transfer went. */ |
c906108c | 2202 | |
917317f4 JM |
2203 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2204 | replaced by print_transfer_performance (with a very different | |
c378eb4e | 2205 | function signature). */ |
917317f4 | 2206 | |
c906108c | 2207 | void |
fba45db2 KB |
2208 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2209 | time_t end_time) | |
c906108c | 2210 | { |
2b71414d DJ |
2211 | struct timeval start, end; |
2212 | ||
2213 | start.tv_sec = start_time; | |
2214 | start.tv_usec = 0; | |
2215 | end.tv_sec = end_time; | |
2216 | end.tv_usec = 0; | |
2217 | ||
2218 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2219 | } |
2220 | ||
2221 | void | |
d9fcf2fb | 2222 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2223 | unsigned long data_count, |
2224 | unsigned long write_count, | |
2b71414d DJ |
2225 | const struct timeval *start_time, |
2226 | const struct timeval *end_time) | |
917317f4 | 2227 | { |
9f43d28c | 2228 | ULONGEST time_count; |
79a45e25 | 2229 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2230 | |
2231 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2232 | accuracy and overflow. */ | |
2233 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2234 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2235 | ||
8b93c638 JM |
2236 | ui_out_text (uiout, "Transfer rate: "); |
2237 | if (time_count > 0) | |
2238 | { | |
9f43d28c DJ |
2239 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2240 | ||
2241 | if (ui_out_is_mi_like_p (uiout)) | |
2242 | { | |
2243 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2244 | ui_out_text (uiout, " bits/sec"); | |
2245 | } | |
2246 | else if (rate < 1024) | |
2247 | { | |
2248 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2249 | ui_out_text (uiout, " bytes/sec"); | |
2250 | } | |
2251 | else | |
2252 | { | |
2253 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2254 | ui_out_text (uiout, " KB/sec"); | |
2255 | } | |
8b93c638 JM |
2256 | } |
2257 | else | |
2258 | { | |
ba5f2f8a | 2259 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2260 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2261 | } |
2262 | if (write_count > 0) | |
2263 | { | |
2264 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2265 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2266 | ui_out_text (uiout, " bytes/write"); |
2267 | } | |
2268 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2269 | } |
2270 | ||
2271 | /* This function allows the addition of incrementally linked object files. | |
2272 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2273 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2274 | special case syntax for the rombug target (Rombug is the boot | |
2275 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2276 | rombug case, the user doesn't need to supply a text address, | |
2277 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2278 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2279 | |
c906108c | 2280 | static void |
fba45db2 | 2281 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2282 | { |
5af949e3 | 2283 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2284 | char *filename = NULL; |
2df3850c | 2285 | int flags = OBJF_USERLOADED; |
c906108c | 2286 | char *arg; |
db162d44 | 2287 | int section_index = 0; |
2acceee2 JM |
2288 | int argcnt = 0; |
2289 | int sec_num = 0; | |
2290 | int i; | |
db162d44 EZ |
2291 | int expecting_sec_name = 0; |
2292 | int expecting_sec_addr = 0; | |
5b96932b | 2293 | char **argv; |
db162d44 | 2294 | |
a39a16c4 | 2295 | struct sect_opt |
2acceee2 | 2296 | { |
2acceee2 JM |
2297 | char *name; |
2298 | char *value; | |
a39a16c4 | 2299 | }; |
db162d44 | 2300 | |
a39a16c4 MM |
2301 | struct section_addr_info *section_addrs; |
2302 | struct sect_opt *sect_opts = NULL; | |
2303 | size_t num_sect_opts = 0; | |
3017564a | 2304 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2305 | |
a39a16c4 | 2306 | num_sect_opts = 16; |
5417f6dc | 2307 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2308 | * sizeof (struct sect_opt)); |
2309 | ||
c906108c SS |
2310 | dont_repeat (); |
2311 | ||
2312 | if (args == NULL) | |
8a3fe4f8 | 2313 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2314 | |
d1a41061 | 2315 | argv = gdb_buildargv (args); |
5b96932b | 2316 | make_cleanup_freeargv (argv); |
db162d44 | 2317 | |
5b96932b AS |
2318 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2319 | { | |
c378eb4e | 2320 | /* Process the argument. */ |
db162d44 | 2321 | if (argcnt == 0) |
c906108c | 2322 | { |
c378eb4e | 2323 | /* The first argument is the file name. */ |
db162d44 | 2324 | filename = tilde_expand (arg); |
3017564a | 2325 | make_cleanup (xfree, filename); |
c906108c | 2326 | } |
db162d44 | 2327 | else |
7a78ae4e ND |
2328 | if (argcnt == 1) |
2329 | { | |
2330 | /* The second argument is always the text address at which | |
c378eb4e | 2331 | to load the program. */ |
7a78ae4e ND |
2332 | sect_opts[section_index].name = ".text"; |
2333 | sect_opts[section_index].value = arg; | |
f414f22f | 2334 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2335 | { |
2336 | num_sect_opts *= 2; | |
5417f6dc | 2337 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2338 | xrealloc (sect_opts, |
5417f6dc | 2339 | num_sect_opts |
a39a16c4 MM |
2340 | * sizeof (struct sect_opt))); |
2341 | } | |
7a78ae4e ND |
2342 | } |
2343 | else | |
2344 | { | |
2345 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2346 | to an option. */ |
7a78ae4e ND |
2347 | |
2348 | if (*arg == '-') | |
2349 | { | |
78a4a9b9 AC |
2350 | if (strcmp (arg, "-readnow") == 0) |
2351 | flags |= OBJF_READNOW; | |
2352 | else if (strcmp (arg, "-s") == 0) | |
2353 | { | |
2354 | expecting_sec_name = 1; | |
2355 | expecting_sec_addr = 1; | |
2356 | } | |
7a78ae4e ND |
2357 | } |
2358 | else | |
2359 | { | |
2360 | if (expecting_sec_name) | |
db162d44 | 2361 | { |
7a78ae4e ND |
2362 | sect_opts[section_index].name = arg; |
2363 | expecting_sec_name = 0; | |
db162d44 EZ |
2364 | } |
2365 | else | |
7a78ae4e ND |
2366 | if (expecting_sec_addr) |
2367 | { | |
2368 | sect_opts[section_index].value = arg; | |
2369 | expecting_sec_addr = 0; | |
f414f22f | 2370 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2371 | { |
2372 | num_sect_opts *= 2; | |
5417f6dc | 2373 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2374 | xrealloc (sect_opts, |
5417f6dc | 2375 | num_sect_opts |
a39a16c4 MM |
2376 | * sizeof (struct sect_opt))); |
2377 | } | |
7a78ae4e ND |
2378 | } |
2379 | else | |
3e43a32a | 2380 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2381 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2382 | } |
2383 | } | |
c906108c | 2384 | } |
c906108c | 2385 | |
927890d0 JB |
2386 | /* This command takes at least two arguments. The first one is a |
2387 | filename, and the second is the address where this file has been | |
2388 | loaded. Abort now if this address hasn't been provided by the | |
2389 | user. */ | |
2390 | if (section_index < 1) | |
2391 | error (_("The address where %s has been loaded is missing"), filename); | |
2392 | ||
c378eb4e | 2393 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2394 | a sect_addr_info structure to be passed around to other |
2395 | functions. We have to split this up into separate print | |
bb599908 | 2396 | statements because hex_string returns a local static |
c378eb4e | 2397 | string. */ |
5417f6dc | 2398 | |
a3f17187 | 2399 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2400 | section_addrs = alloc_section_addr_info (section_index); |
2401 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2402 | for (i = 0; i < section_index; i++) |
c906108c | 2403 | { |
db162d44 EZ |
2404 | CORE_ADDR addr; |
2405 | char *val = sect_opts[i].value; | |
2406 | char *sec = sect_opts[i].name; | |
5417f6dc | 2407 | |
ae822768 | 2408 | addr = parse_and_eval_address (val); |
db162d44 | 2409 | |
db162d44 | 2410 | /* Here we store the section offsets in the order they were |
c378eb4e | 2411 | entered on the command line. */ |
a39a16c4 MM |
2412 | section_addrs->other[sec_num].name = sec; |
2413 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2414 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2415 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2416 | sec_num++; |
2417 | ||
5417f6dc | 2418 | /* The object's sections are initialized when a |
db162d44 | 2419 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2420 | This happens in reread_symbols. |
db162d44 EZ |
2421 | At this point, we don't know what file type this is, |
2422 | so we can't determine what section names are valid. */ | |
2acceee2 | 2423 | } |
db162d44 | 2424 | |
2acceee2 | 2425 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2426 | error (_("Not confirmed.")); |
c906108c | 2427 | |
7eedccfa PP |
2428 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2429 | section_addrs, flags); | |
c906108c SS |
2430 | |
2431 | /* Getting new symbols may change our opinion about what is | |
2432 | frameless. */ | |
2433 | reinit_frame_cache (); | |
db162d44 | 2434 | do_cleanups (my_cleanups); |
c906108c SS |
2435 | } |
2436 | \f | |
70992597 | 2437 | |
4ac39b97 JK |
2438 | typedef struct objfile *objfilep; |
2439 | ||
2440 | DEF_VEC_P (objfilep); | |
2441 | ||
c906108c SS |
2442 | /* Re-read symbols if a symbol-file has changed. */ |
2443 | void | |
fba45db2 | 2444 | reread_symbols (void) |
c906108c SS |
2445 | { |
2446 | struct objfile *objfile; | |
2447 | long new_modtime; | |
c906108c SS |
2448 | struct stat new_statbuf; |
2449 | int res; | |
4ac39b97 JK |
2450 | VEC (objfilep) *new_objfiles = NULL; |
2451 | struct cleanup *all_cleanups; | |
2452 | ||
2453 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2454 | |
2455 | /* With the addition of shared libraries, this should be modified, | |
2456 | the load time should be saved in the partial symbol tables, since | |
2457 | different tables may come from different source files. FIXME. | |
2458 | This routine should then walk down each partial symbol table | |
c378eb4e | 2459 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2460 | |
c5aa993b JM |
2461 | for (objfile = object_files; objfile; objfile = objfile->next) |
2462 | { | |
9cce227f TG |
2463 | /* solib-sunos.c creates one objfile with obfd. */ |
2464 | if (objfile->obfd == NULL) | |
2465 | continue; | |
2466 | ||
2467 | /* Separate debug objfiles are handled in the main objfile. */ | |
2468 | if (objfile->separate_debug_objfile_backlink) | |
2469 | continue; | |
2470 | ||
02aeec7b JB |
2471 | /* If this object is from an archive (what you usually create with |
2472 | `ar', often called a `static library' on most systems, though | |
2473 | a `shared library' on AIX is also an archive), then you should | |
2474 | stat on the archive name, not member name. */ | |
9cce227f TG |
2475 | if (objfile->obfd->my_archive) |
2476 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2477 | else | |
9cce227f TG |
2478 | res = stat (objfile->name, &new_statbuf); |
2479 | if (res != 0) | |
2480 | { | |
c378eb4e | 2481 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2482 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2483 | objfile->name); | |
2484 | continue; | |
2485 | } | |
2486 | new_modtime = new_statbuf.st_mtime; | |
2487 | if (new_modtime != objfile->mtime) | |
2488 | { | |
2489 | struct cleanup *old_cleanups; | |
2490 | struct section_offsets *offsets; | |
2491 | int num_offsets; | |
2492 | char *obfd_filename; | |
2493 | ||
2494 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2495 | objfile->name); | |
2496 | ||
2497 | /* There are various functions like symbol_file_add, | |
2498 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2499 | appear to do what we want. But they have various other | |
2500 | effects which we *don't* want. So we just do stuff | |
2501 | ourselves. We don't worry about mapped files (for one thing, | |
2502 | any mapped file will be out of date). */ | |
2503 | ||
2504 | /* If we get an error, blow away this objfile (not sure if | |
2505 | that is the correct response for things like shared | |
2506 | libraries). */ | |
2507 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2508 | /* We need to do this whenever any symbols go away. */ | |
2509 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2510 | ||
0ba1096a KT |
2511 | if (exec_bfd != NULL |
2512 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2513 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2514 | { |
2515 | /* Reload EXEC_BFD without asking anything. */ | |
2516 | ||
2517 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2518 | } | |
2519 | ||
f6eeced0 JK |
2520 | /* Keep the calls order approx. the same as in free_objfile. */ |
2521 | ||
2522 | /* Free the separate debug objfiles. It will be | |
2523 | automatically recreated by sym_read. */ | |
2524 | free_objfile_separate_debug (objfile); | |
2525 | ||
2526 | /* Remove any references to this objfile in the global | |
2527 | value lists. */ | |
2528 | preserve_values (objfile); | |
2529 | ||
2530 | /* Nuke all the state that we will re-read. Much of the following | |
2531 | code which sets things to NULL really is necessary to tell | |
2532 | other parts of GDB that there is nothing currently there. | |
2533 | ||
2534 | Try to keep the freeing order compatible with free_objfile. */ | |
2535 | ||
2536 | if (objfile->sf != NULL) | |
2537 | { | |
2538 | (*objfile->sf->sym_finish) (objfile); | |
2539 | } | |
2540 | ||
2541 | clear_objfile_data (objfile); | |
2542 | ||
9cce227f TG |
2543 | /* Clean up any state BFD has sitting around. We don't need |
2544 | to close the descriptor but BFD lacks a way of closing the | |
2545 | BFD without closing the descriptor. */ | |
2546 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2547 | if (!bfd_close (objfile->obfd)) | |
2548 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2549 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2550 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2551 | if (objfile->obfd == NULL) |
2552 | error (_("Can't open %s to read symbols."), objfile->name); | |
2553 | else | |
2554 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2555 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2556 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2557 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2558 | bfd_errmsg (bfd_get_error ())); | |
2559 | ||
2560 | /* Save the offsets, we will nuke them with the rest of the | |
2561 | objfile_obstack. */ | |
2562 | num_offsets = objfile->num_sections; | |
2563 | offsets = ((struct section_offsets *) | |
2564 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2565 | memcpy (offsets, objfile->section_offsets, | |
2566 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2567 | ||
9cce227f TG |
2568 | /* FIXME: Do we have to free a whole linked list, or is this |
2569 | enough? */ | |
2570 | if (objfile->global_psymbols.list) | |
2571 | xfree (objfile->global_psymbols.list); | |
2572 | memset (&objfile->global_psymbols, 0, | |
2573 | sizeof (objfile->global_psymbols)); | |
2574 | if (objfile->static_psymbols.list) | |
2575 | xfree (objfile->static_psymbols.list); | |
2576 | memset (&objfile->static_psymbols, 0, | |
2577 | sizeof (objfile->static_psymbols)); | |
2578 | ||
c378eb4e | 2579 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2580 | psymbol_bcache_free (objfile->psymbol_cache); |
2581 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f | 2582 | bcache_xfree (objfile->macro_cache); |
cbd70537 | 2583 | objfile->macro_cache = bcache_xmalloc (NULL, NULL); |
9cce227f | 2584 | bcache_xfree (objfile->filename_cache); |
cbd70537 | 2585 | objfile->filename_cache = bcache_xmalloc (NULL,NULL); |
9cce227f TG |
2586 | if (objfile->demangled_names_hash != NULL) |
2587 | { | |
2588 | htab_delete (objfile->demangled_names_hash); | |
2589 | objfile->demangled_names_hash = NULL; | |
2590 | } | |
2591 | obstack_free (&objfile->objfile_obstack, 0); | |
2592 | objfile->sections = NULL; | |
2593 | objfile->symtabs = NULL; | |
2594 | objfile->psymtabs = NULL; | |
2595 | objfile->psymtabs_addrmap = NULL; | |
2596 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2597 | objfile->template_symbols = NULL; |
9cce227f TG |
2598 | objfile->msymbols = NULL; |
2599 | objfile->deprecated_sym_private = NULL; | |
2600 | objfile->minimal_symbol_count = 0; | |
2601 | memset (&objfile->msymbol_hash, 0, | |
2602 | sizeof (objfile->msymbol_hash)); | |
2603 | memset (&objfile->msymbol_demangled_hash, 0, | |
2604 | sizeof (objfile->msymbol_demangled_hash)); | |
2605 | ||
9cce227f TG |
2606 | /* obstack_init also initializes the obstack so it is |
2607 | empty. We could use obstack_specify_allocation but | |
2608 | gdb_obstack.h specifies the alloc/dealloc | |
2609 | functions. */ | |
2610 | obstack_init (&objfile->objfile_obstack); | |
2611 | if (build_objfile_section_table (objfile)) | |
2612 | { | |
2613 | error (_("Can't find the file sections in `%s': %s"), | |
2614 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2615 | } | |
2616 | terminate_minimal_symbol_table (objfile); | |
2617 | ||
2618 | /* We use the same section offsets as from last time. I'm not | |
2619 | sure whether that is always correct for shared libraries. */ | |
2620 | objfile->section_offsets = (struct section_offsets *) | |
2621 | obstack_alloc (&objfile->objfile_obstack, | |
2622 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2623 | memcpy (objfile->section_offsets, offsets, | |
2624 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2625 | objfile->num_sections = num_offsets; | |
2626 | ||
2627 | /* What the hell is sym_new_init for, anyway? The concept of | |
2628 | distinguishing between the main file and additional files | |
2629 | in this way seems rather dubious. */ | |
2630 | if (objfile == symfile_objfile) | |
c906108c | 2631 | { |
9cce227f | 2632 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2633 | } |
9cce227f TG |
2634 | |
2635 | (*objfile->sf->sym_init) (objfile); | |
2636 | clear_complaints (&symfile_complaints, 1, 1); | |
2637 | /* Do not set flags as this is safe and we don't want to be | |
2638 | verbose. */ | |
2639 | (*objfile->sf->sym_read) (objfile, 0); | |
b11896a5 TT |
2640 | if ((objfile->flags & OBJF_PSYMTABS_READ) != 0) |
2641 | { | |
2642 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2643 | require_partial_symbols (objfile, 0); | |
2644 | } | |
2645 | ||
9cce227f | 2646 | if (!objfile_has_symbols (objfile)) |
c906108c | 2647 | { |
9cce227f TG |
2648 | wrap_here (""); |
2649 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2650 | wrap_here (""); | |
c5aa993b | 2651 | } |
9cce227f TG |
2652 | |
2653 | /* We're done reading the symbol file; finish off complaints. */ | |
2654 | clear_complaints (&symfile_complaints, 0, 1); | |
2655 | ||
2656 | /* Getting new symbols may change our opinion about what is | |
2657 | frameless. */ | |
2658 | ||
2659 | reinit_frame_cache (); | |
2660 | ||
2661 | /* Discard cleanups as symbol reading was successful. */ | |
2662 | discard_cleanups (old_cleanups); | |
2663 | ||
2664 | /* If the mtime has changed between the time we set new_modtime | |
2665 | and now, we *want* this to be out of date, so don't call stat | |
2666 | again now. */ | |
2667 | objfile->mtime = new_modtime; | |
9cce227f | 2668 | init_entry_point_info (objfile); |
4ac39b97 JK |
2669 | |
2670 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2671 | } |
2672 | } | |
c906108c | 2673 | |
4ac39b97 | 2674 | if (new_objfiles) |
ea53e89f | 2675 | { |
4ac39b97 JK |
2676 | int ix; |
2677 | ||
ff3536bc UW |
2678 | /* Notify objfiles that we've modified objfile sections. */ |
2679 | objfiles_changed (); | |
2680 | ||
c1e56572 | 2681 | clear_symtab_users (0); |
4ac39b97 JK |
2682 | |
2683 | /* clear_objfile_data for each objfile was called before freeing it and | |
2684 | observer_notify_new_objfile (NULL) has been called by | |
2685 | clear_symtab_users above. Notify the new files now. */ | |
2686 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2687 | observer_notify_new_objfile (objfile); | |
2688 | ||
ea53e89f JB |
2689 | /* At least one objfile has changed, so we can consider that |
2690 | the executable we're debugging has changed too. */ | |
781b42b0 | 2691 | observer_notify_executable_changed (); |
ea53e89f | 2692 | } |
4ac39b97 JK |
2693 | |
2694 | do_cleanups (all_cleanups); | |
c906108c | 2695 | } |
c906108c SS |
2696 | \f |
2697 | ||
c5aa993b JM |
2698 | |
2699 | typedef struct | |
2700 | { | |
2701 | char *ext; | |
c906108c | 2702 | enum language lang; |
c5aa993b JM |
2703 | } |
2704 | filename_language; | |
c906108c | 2705 | |
c5aa993b | 2706 | static filename_language *filename_language_table; |
c906108c SS |
2707 | static int fl_table_size, fl_table_next; |
2708 | ||
2709 | static void | |
fba45db2 | 2710 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2711 | { |
2712 | if (fl_table_next >= fl_table_size) | |
2713 | { | |
2714 | fl_table_size += 10; | |
5417f6dc | 2715 | filename_language_table = |
25bf3106 PM |
2716 | xrealloc (filename_language_table, |
2717 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2718 | } |
2719 | ||
4fcf66da | 2720 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2721 | filename_language_table[fl_table_next].lang = lang; |
2722 | fl_table_next++; | |
2723 | } | |
2724 | ||
2725 | static char *ext_args; | |
920d2a44 AC |
2726 | static void |
2727 | show_ext_args (struct ui_file *file, int from_tty, | |
2728 | struct cmd_list_element *c, const char *value) | |
2729 | { | |
3e43a32a MS |
2730 | fprintf_filtered (file, |
2731 | _("Mapping between filename extension " | |
2732 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2733 | value); |
2734 | } | |
c906108c SS |
2735 | |
2736 | static void | |
26c41df3 | 2737 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2738 | { |
2739 | int i; | |
2740 | char *cp = ext_args; | |
2741 | enum language lang; | |
2742 | ||
c378eb4e | 2743 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2744 | if (*cp != '.') |
8a3fe4f8 | 2745 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2746 | |
2747 | /* Find end of first arg. */ | |
c5aa993b | 2748 | while (*cp && !isspace (*cp)) |
c906108c SS |
2749 | cp++; |
2750 | ||
2751 | if (*cp == '\0') | |
3e43a32a MS |
2752 | error (_("'%s': two arguments required -- " |
2753 | "filename extension and language"), | |
c906108c SS |
2754 | ext_args); |
2755 | ||
c378eb4e | 2756 | /* Null-terminate first arg. */ |
c5aa993b | 2757 | *cp++ = '\0'; |
c906108c SS |
2758 | |
2759 | /* Find beginning of second arg, which should be a source language. */ | |
2760 | while (*cp && isspace (*cp)) | |
2761 | cp++; | |
2762 | ||
2763 | if (*cp == '\0') | |
3e43a32a MS |
2764 | error (_("'%s': two arguments required -- " |
2765 | "filename extension and language"), | |
c906108c SS |
2766 | ext_args); |
2767 | ||
2768 | /* Lookup the language from among those we know. */ | |
2769 | lang = language_enum (cp); | |
2770 | ||
2771 | /* Now lookup the filename extension: do we already know it? */ | |
2772 | for (i = 0; i < fl_table_next; i++) | |
2773 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2774 | break; | |
2775 | ||
2776 | if (i >= fl_table_next) | |
2777 | { | |
c378eb4e | 2778 | /* New file extension. */ |
c906108c SS |
2779 | add_filename_language (ext_args, lang); |
2780 | } | |
2781 | else | |
2782 | { | |
c378eb4e | 2783 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2784 | |
2785 | /* if (from_tty) */ | |
2786 | /* query ("Really make files of type %s '%s'?", */ | |
2787 | /* ext_args, language_str (lang)); */ | |
2788 | ||
b8c9b27d | 2789 | xfree (filename_language_table[i].ext); |
4fcf66da | 2790 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2791 | filename_language_table[i].lang = lang; |
2792 | } | |
2793 | } | |
2794 | ||
2795 | static void | |
fba45db2 | 2796 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2797 | { |
2798 | int i; | |
2799 | ||
a3f17187 | 2800 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2801 | printf_filtered ("\n\n"); |
2802 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2803 | printf_filtered ("\t%s\t- %s\n", |
2804 | filename_language_table[i].ext, | |
c906108c SS |
2805 | language_str (filename_language_table[i].lang)); |
2806 | } | |
2807 | ||
2808 | static void | |
fba45db2 | 2809 | init_filename_language_table (void) |
c906108c | 2810 | { |
c378eb4e | 2811 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2812 | { |
2813 | fl_table_size = 20; | |
2814 | fl_table_next = 0; | |
c5aa993b | 2815 | filename_language_table = |
c906108c | 2816 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2817 | add_filename_language (".c", language_c); |
6aecb9c2 | 2818 | add_filename_language (".d", language_d); |
c5aa993b JM |
2819 | add_filename_language (".C", language_cplus); |
2820 | add_filename_language (".cc", language_cplus); | |
2821 | add_filename_language (".cp", language_cplus); | |
2822 | add_filename_language (".cpp", language_cplus); | |
2823 | add_filename_language (".cxx", language_cplus); | |
2824 | add_filename_language (".c++", language_cplus); | |
2825 | add_filename_language (".java", language_java); | |
c906108c | 2826 | add_filename_language (".class", language_java); |
da2cf7e0 | 2827 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2828 | add_filename_language (".f", language_fortran); |
2829 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2830 | add_filename_language (".for", language_fortran); |
2831 | add_filename_language (".FOR", language_fortran); | |
2832 | add_filename_language (".ftn", language_fortran); | |
2833 | add_filename_language (".FTN", language_fortran); | |
2834 | add_filename_language (".fpp", language_fortran); | |
2835 | add_filename_language (".FPP", language_fortran); | |
2836 | add_filename_language (".f90", language_fortran); | |
2837 | add_filename_language (".F90", language_fortran); | |
2838 | add_filename_language (".f95", language_fortran); | |
2839 | add_filename_language (".F95", language_fortran); | |
2840 | add_filename_language (".f03", language_fortran); | |
2841 | add_filename_language (".F03", language_fortran); | |
2842 | add_filename_language (".f08", language_fortran); | |
2843 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2844 | add_filename_language (".s", language_asm); |
aa707ed0 | 2845 | add_filename_language (".sx", language_asm); |
c5aa993b | 2846 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2847 | add_filename_language (".pas", language_pascal); |
2848 | add_filename_language (".p", language_pascal); | |
2849 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2850 | add_filename_language (".adb", language_ada); |
2851 | add_filename_language (".ads", language_ada); | |
2852 | add_filename_language (".a", language_ada); | |
2853 | add_filename_language (".ada", language_ada); | |
dde59185 | 2854 | add_filename_language (".dg", language_ada); |
c906108c SS |
2855 | } |
2856 | } | |
2857 | ||
2858 | enum language | |
dd786858 | 2859 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2860 | { |
2861 | int i; | |
2862 | char *cp; | |
2863 | ||
2864 | if (filename != NULL) | |
2865 | if ((cp = strrchr (filename, '.')) != NULL) | |
2866 | for (i = 0; i < fl_table_next; i++) | |
2867 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2868 | return filename_language_table[i].lang; | |
2869 | ||
2870 | return language_unknown; | |
2871 | } | |
2872 | \f | |
2873 | /* allocate_symtab: | |
2874 | ||
2875 | Allocate and partly initialize a new symbol table. Return a pointer | |
2876 | to it. error() if no space. | |
2877 | ||
2878 | Caller must set these fields: | |
c5aa993b JM |
2879 | LINETABLE(symtab) |
2880 | symtab->blockvector | |
2881 | symtab->dirname | |
2882 | symtab->free_code | |
2883 | symtab->free_ptr | |
c906108c SS |
2884 | */ |
2885 | ||
2886 | struct symtab * | |
72b9f47f | 2887 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2888 | { |
52f0bd74 | 2889 | struct symtab *symtab; |
c906108c SS |
2890 | |
2891 | symtab = (struct symtab *) | |
4a146b47 | 2892 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2893 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2894 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2895 | objfile->filename_cache); | |
c5aa993b JM |
2896 | symtab->fullname = NULL; |
2897 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2898 | symtab->debugformat = "unknown"; |
c906108c | 2899 | |
c378eb4e | 2900 | /* Hook it to the objfile it comes from. */ |
c906108c | 2901 | |
c5aa993b JM |
2902 | symtab->objfile = objfile; |
2903 | symtab->next = objfile->symtabs; | |
2904 | objfile->symtabs = symtab; | |
c906108c | 2905 | |
c906108c SS |
2906 | return (symtab); |
2907 | } | |
c906108c | 2908 | \f |
c5aa993b | 2909 | |
c906108c | 2910 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2911 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2912 | |
2913 | void | |
c1e56572 | 2914 | clear_symtab_users (int add_flags) |
c906108c SS |
2915 | { |
2916 | /* Someday, we should do better than this, by only blowing away | |
2917 | the things that really need to be blown. */ | |
c0501be5 DJ |
2918 | |
2919 | /* Clear the "current" symtab first, because it is no longer valid. | |
2920 | breakpoint_re_set may try to access the current symtab. */ | |
2921 | clear_current_source_symtab_and_line (); | |
2922 | ||
c906108c | 2923 | clear_displays (); |
c1e56572 JK |
2924 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2925 | breakpoint_re_set (); | |
1bfeeb0f | 2926 | clear_last_displayed_sal (); |
c906108c | 2927 | clear_pc_function_cache (); |
06d3b283 | 2928 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2929 | |
2930 | /* Clear globals which might have pointed into a removed objfile. | |
2931 | FIXME: It's not clear which of these are supposed to persist | |
2932 | between expressions and which ought to be reset each time. */ | |
2933 | expression_context_block = NULL; | |
2934 | innermost_block = NULL; | |
8756216b DP |
2935 | |
2936 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2937 | varobj_invalidate (); | |
2938 | ||
c906108c SS |
2939 | } |
2940 | ||
74b7792f AC |
2941 | static void |
2942 | clear_symtab_users_cleanup (void *ignore) | |
2943 | { | |
c1e56572 | 2944 | clear_symtab_users (0); |
74b7792f | 2945 | } |
c906108c | 2946 | \f |
c906108c SS |
2947 | /* OVERLAYS: |
2948 | The following code implements an abstraction for debugging overlay sections. | |
2949 | ||
2950 | The target model is as follows: | |
2951 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2952 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2953 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2954 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2955 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2956 | sections should be considered to be mapped from the VMA to the LMA. |
2957 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2958 | For instance, if a section has been mapped then its contents |
c5aa993b | 2959 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2960 | |
2961 | Two levels of debugger support for overlays are available. One is | |
2962 | "manual", in which the debugger relies on the user to tell it which | |
2963 | overlays are currently mapped. This level of support is | |
2964 | implemented entirely in the core debugger, and the information about | |
2965 | whether a section is mapped is kept in the objfile->obj_section table. | |
2966 | ||
2967 | The second level of support is "automatic", and is only available if | |
2968 | the target-specific code provides functionality to read the target's | |
2969 | overlay mapping table, and translate its contents for the debugger | |
2970 | (by updating the mapped state information in the obj_section tables). | |
2971 | ||
2972 | The interface is as follows: | |
c5aa993b JM |
2973 | User commands: |
2974 | overlay map <name> -- tell gdb to consider this section mapped | |
2975 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2976 | overlay list -- list the sections that GDB thinks are mapped | |
2977 | overlay read-target -- get the target's state of what's mapped | |
2978 | overlay off/manual/auto -- set overlay debugging state | |
2979 | Functional interface: | |
2980 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2981 | section, return that section. | |
5417f6dc | 2982 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2983 | the pc, either in its VMA or its LMA |
714835d5 | 2984 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2985 | section_is_overlay(sect): true if section's VMA != LMA |
2986 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2987 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2988 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2989 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2990 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2991 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2992 | either in VMA or LMA depending on whether | |
c378eb4e | 2993 | the symbol's section is currently mapped. */ |
c906108c SS |
2994 | |
2995 | /* Overlay debugging state: */ | |
2996 | ||
d874f1e2 | 2997 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2998 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2999 | |
c906108c | 3000 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3001 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3002 | SECTION is loaded at an address different from where it will "run". */ |
3003 | ||
3004 | int | |
714835d5 | 3005 | section_is_overlay (struct obj_section *section) |
c906108c | 3006 | { |
714835d5 UW |
3007 | if (overlay_debugging && section) |
3008 | { | |
3009 | bfd *abfd = section->objfile->obfd; | |
3010 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 3011 | |
714835d5 UW |
3012 | if (bfd_section_lma (abfd, bfd_section) != 0 |
3013 | && bfd_section_lma (abfd, bfd_section) | |
3014 | != bfd_section_vma (abfd, bfd_section)) | |
3015 | return 1; | |
3016 | } | |
c906108c SS |
3017 | |
3018 | return 0; | |
3019 | } | |
3020 | ||
3021 | /* Function: overlay_invalidate_all (void) | |
3022 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3023 | ||
3024 | static void | |
fba45db2 | 3025 | overlay_invalidate_all (void) |
c906108c | 3026 | { |
c5aa993b | 3027 | struct objfile *objfile; |
c906108c SS |
3028 | struct obj_section *sect; |
3029 | ||
3030 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3031 | if (section_is_overlay (sect)) |
3032 | sect->ovly_mapped = -1; | |
c906108c SS |
3033 | } |
3034 | ||
714835d5 | 3035 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3036 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3037 | |
3038 | Access to the ovly_mapped flag is restricted to this function, so | |
3039 | that we can do automatic update. If the global flag | |
3040 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3041 | overlay_invalidate_all. If the mapped state of the particular | |
3042 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3043 | ||
714835d5 UW |
3044 | int |
3045 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3046 | { |
9216df95 UW |
3047 | struct gdbarch *gdbarch; |
3048 | ||
714835d5 | 3049 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3050 | return 0; |
3051 | ||
c5aa993b | 3052 | switch (overlay_debugging) |
c906108c SS |
3053 | { |
3054 | default: | |
d874f1e2 | 3055 | case ovly_off: |
c5aa993b | 3056 | return 0; /* overlay debugging off */ |
d874f1e2 | 3057 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3058 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3059 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3060 | gdbarch = get_objfile_arch (osect->objfile); |
3061 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3062 | { |
3063 | if (overlay_cache_invalid) | |
3064 | { | |
3065 | overlay_invalidate_all (); | |
3066 | overlay_cache_invalid = 0; | |
3067 | } | |
3068 | if (osect->ovly_mapped == -1) | |
9216df95 | 3069 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3070 | } |
3071 | /* fall thru to manual case */ | |
d874f1e2 | 3072 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3073 | return osect->ovly_mapped == 1; |
3074 | } | |
3075 | } | |
3076 | ||
c906108c SS |
3077 | /* Function: pc_in_unmapped_range |
3078 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3079 | ||
3080 | CORE_ADDR | |
714835d5 | 3081 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3082 | { |
714835d5 UW |
3083 | if (section_is_overlay (section)) |
3084 | { | |
3085 | bfd *abfd = section->objfile->obfd; | |
3086 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3087 | |
714835d5 UW |
3088 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3089 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3090 | CORE_ADDR offset = obj_section_offset (section); | |
3091 | ||
3092 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3093 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3094 | return 1; | |
3095 | } | |
c906108c | 3096 | |
c906108c SS |
3097 | return 0; |
3098 | } | |
3099 | ||
3100 | /* Function: pc_in_mapped_range | |
3101 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3102 | ||
3103 | CORE_ADDR | |
714835d5 | 3104 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3105 | { |
714835d5 UW |
3106 | if (section_is_overlay (section)) |
3107 | { | |
3108 | if (obj_section_addr (section) <= pc | |
3109 | && pc < obj_section_endaddr (section)) | |
3110 | return 1; | |
3111 | } | |
c906108c | 3112 | |
c906108c SS |
3113 | return 0; |
3114 | } | |
3115 | ||
9ec8e6a0 JB |
3116 | |
3117 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3118 | otherwise. */ | |
b9362cc7 | 3119 | static int |
714835d5 | 3120 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3121 | { |
714835d5 UW |
3122 | CORE_ADDR a_start = obj_section_addr (a); |
3123 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3124 | CORE_ADDR b_start = obj_section_addr (b); | |
3125 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3126 | |
3127 | return (a_start < b_end && b_start < a_end); | |
3128 | } | |
3129 | ||
c906108c SS |
3130 | /* Function: overlay_unmapped_address (PC, SECTION) |
3131 | Returns the address corresponding to PC in the unmapped (load) range. | |
3132 | May be the same as PC. */ | |
3133 | ||
3134 | CORE_ADDR | |
714835d5 | 3135 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3136 | { |
714835d5 UW |
3137 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3138 | { | |
3139 | bfd *abfd = section->objfile->obfd; | |
3140 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3141 | |
714835d5 UW |
3142 | return pc + bfd_section_lma (abfd, bfd_section) |
3143 | - bfd_section_vma (abfd, bfd_section); | |
3144 | } | |
c906108c SS |
3145 | |
3146 | return pc; | |
3147 | } | |
3148 | ||
3149 | /* Function: overlay_mapped_address (PC, SECTION) | |
3150 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3151 | May be the same as PC. */ | |
3152 | ||
3153 | CORE_ADDR | |
714835d5 | 3154 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3155 | { |
714835d5 UW |
3156 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3157 | { | |
3158 | bfd *abfd = section->objfile->obfd; | |
3159 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3160 | |
714835d5 UW |
3161 | return pc + bfd_section_vma (abfd, bfd_section) |
3162 | - bfd_section_lma (abfd, bfd_section); | |
3163 | } | |
c906108c SS |
3164 | |
3165 | return pc; | |
3166 | } | |
3167 | ||
3168 | ||
5417f6dc | 3169 | /* Function: symbol_overlayed_address |
c906108c SS |
3170 | Return one of two addresses (relative to the VMA or to the LMA), |
3171 | depending on whether the section is mapped or not. */ | |
3172 | ||
c5aa993b | 3173 | CORE_ADDR |
714835d5 | 3174 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3175 | { |
3176 | if (overlay_debugging) | |
3177 | { | |
c378eb4e | 3178 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3179 | if (section == 0) |
3180 | return address; | |
c378eb4e MS |
3181 | /* If the symbol's section is not an overlay, just return its |
3182 | address. */ | |
c906108c SS |
3183 | if (!section_is_overlay (section)) |
3184 | return address; | |
c378eb4e | 3185 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3186 | if (section_is_mapped (section)) |
3187 | return address; | |
3188 | /* | |
3189 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3190 | * then return its LOADED address rather than its vma address!! | |
3191 | */ | |
3192 | return overlay_unmapped_address (address, section); | |
3193 | } | |
3194 | return address; | |
3195 | } | |
3196 | ||
5417f6dc | 3197 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3198 | Return the best-match overlay section for PC: |
3199 | If PC matches a mapped overlay section's VMA, return that section. | |
3200 | Else if PC matches an unmapped section's VMA, return that section. | |
3201 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3202 | ||
714835d5 | 3203 | struct obj_section * |
fba45db2 | 3204 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3205 | { |
c5aa993b | 3206 | struct objfile *objfile; |
c906108c SS |
3207 | struct obj_section *osect, *best_match = NULL; |
3208 | ||
3209 | if (overlay_debugging) | |
3210 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3211 | if (section_is_overlay (osect)) |
c5aa993b | 3212 | { |
714835d5 | 3213 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3214 | { |
714835d5 UW |
3215 | if (section_is_mapped (osect)) |
3216 | return osect; | |
c5aa993b JM |
3217 | else |
3218 | best_match = osect; | |
3219 | } | |
714835d5 | 3220 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3221 | best_match = osect; |
3222 | } | |
714835d5 | 3223 | return best_match; |
c906108c SS |
3224 | } |
3225 | ||
3226 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3227 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3228 | currently marked as MAPPED, return that section. Else return NULL. */ |
3229 | ||
714835d5 | 3230 | struct obj_section * |
fba45db2 | 3231 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3232 | { |
c5aa993b | 3233 | struct objfile *objfile; |
c906108c SS |
3234 | struct obj_section *osect; |
3235 | ||
3236 | if (overlay_debugging) | |
3237 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3238 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3239 | return osect; | |
c906108c SS |
3240 | |
3241 | return NULL; | |
3242 | } | |
3243 | ||
3244 | /* Function: list_overlays_command | |
c378eb4e | 3245 | Print a list of mapped sections and their PC ranges. */ |
c906108c SS |
3246 | |
3247 | void | |
fba45db2 | 3248 | list_overlays_command (char *args, int from_tty) |
c906108c | 3249 | { |
c5aa993b JM |
3250 | int nmapped = 0; |
3251 | struct objfile *objfile; | |
c906108c SS |
3252 | struct obj_section *osect; |
3253 | ||
3254 | if (overlay_debugging) | |
3255 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3256 | if (section_is_mapped (osect)) |
c5aa993b | 3257 | { |
5af949e3 | 3258 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3259 | const char *name; |
3260 | bfd_vma lma, vma; | |
3261 | int size; | |
3262 | ||
3263 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3264 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3265 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3266 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3267 | ||
3268 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3269 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3270 | puts_filtered (" - "); |
5af949e3 | 3271 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3272 | printf_filtered (", mapped at "); |
5af949e3 | 3273 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3274 | puts_filtered (" - "); |
5af949e3 | 3275 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3276 | puts_filtered ("\n"); |
3277 | ||
3278 | nmapped++; | |
3279 | } | |
c906108c | 3280 | if (nmapped == 0) |
a3f17187 | 3281 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3282 | } |
3283 | ||
3284 | /* Function: map_overlay_command | |
3285 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3286 | ||
3287 | void | |
fba45db2 | 3288 | map_overlay_command (char *args, int from_tty) |
c906108c | 3289 | { |
c5aa993b JM |
3290 | struct objfile *objfile, *objfile2; |
3291 | struct obj_section *sec, *sec2; | |
c906108c SS |
3292 | |
3293 | if (!overlay_debugging) | |
3e43a32a MS |
3294 | error (_("Overlay debugging not enabled. Use " |
3295 | "either the 'overlay auto' or\n" | |
3296 | "the 'overlay manual' command.")); | |
c906108c SS |
3297 | |
3298 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3299 | error (_("Argument required: name of an overlay section")); |
c906108c | 3300 | |
c378eb4e | 3301 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3302 | ALL_OBJSECTIONS (objfile, sec) |
3303 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3304 | { |
c378eb4e | 3305 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3306 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3307 | continue; /* not an overlay section */ |
3308 | ||
c378eb4e | 3309 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3310 | sec->ovly_mapped = 1; |
3311 | ||
3312 | /* Next, make a pass and unmap any sections that are | |
3313 | overlapped by this new section: */ | |
3314 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3315 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3316 | { |
3317 | if (info_verbose) | |
a3f17187 | 3318 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3319 | bfd_section_name (objfile->obfd, |
3320 | sec2->the_bfd_section)); | |
c378eb4e | 3321 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3322 | } |
3323 | return; | |
3324 | } | |
8a3fe4f8 | 3325 | error (_("No overlay section called %s"), args); |
c906108c SS |
3326 | } |
3327 | ||
3328 | /* Function: unmap_overlay_command | |
5417f6dc | 3329 | Mark the overlay section as unmapped |
c906108c SS |
3330 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3331 | ||
3332 | void | |
fba45db2 | 3333 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3334 | { |
c5aa993b | 3335 | struct objfile *objfile; |
c906108c SS |
3336 | struct obj_section *sec; |
3337 | ||
3338 | if (!overlay_debugging) | |
3e43a32a MS |
3339 | error (_("Overlay debugging not enabled. " |
3340 | "Use either the 'overlay auto' or\n" | |
3341 | "the 'overlay manual' command.")); | |
c906108c SS |
3342 | |
3343 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3344 | error (_("Argument required: name of an overlay section")); |
c906108c | 3345 | |
c378eb4e | 3346 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3347 | ALL_OBJSECTIONS (objfile, sec) |
3348 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3349 | { |
3350 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3351 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3352 | sec->ovly_mapped = 0; |
3353 | return; | |
3354 | } | |
8a3fe4f8 | 3355 | error (_("No overlay section called %s"), args); |
c906108c SS |
3356 | } |
3357 | ||
3358 | /* Function: overlay_auto_command | |
3359 | A utility command to turn on overlay debugging. | |
c378eb4e | 3360 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3361 | |
3362 | static void | |
fba45db2 | 3363 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3364 | { |
d874f1e2 | 3365 | overlay_debugging = ovly_auto; |
1900040c | 3366 | enable_overlay_breakpoints (); |
c906108c | 3367 | if (info_verbose) |
a3f17187 | 3368 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3369 | } |
3370 | ||
3371 | /* Function: overlay_manual_command | |
3372 | A utility command to turn on overlay debugging. | |
c378eb4e | 3373 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3374 | |
3375 | static void | |
fba45db2 | 3376 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3377 | { |
d874f1e2 | 3378 | overlay_debugging = ovly_on; |
1900040c | 3379 | disable_overlay_breakpoints (); |
c906108c | 3380 | if (info_verbose) |
a3f17187 | 3381 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3382 | } |
3383 | ||
3384 | /* Function: overlay_off_command | |
3385 | A utility command to turn on overlay debugging. | |
c378eb4e | 3386 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3387 | |
3388 | static void | |
fba45db2 | 3389 | overlay_off_command (char *args, int from_tty) |
c906108c | 3390 | { |
d874f1e2 | 3391 | overlay_debugging = ovly_off; |
1900040c | 3392 | disable_overlay_breakpoints (); |
c906108c | 3393 | if (info_verbose) |
a3f17187 | 3394 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3395 | } |
3396 | ||
3397 | static void | |
fba45db2 | 3398 | overlay_load_command (char *args, int from_tty) |
c906108c | 3399 | { |
e17c207e UW |
3400 | struct gdbarch *gdbarch = get_current_arch (); |
3401 | ||
3402 | if (gdbarch_overlay_update_p (gdbarch)) | |
3403 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3404 | else |
8a3fe4f8 | 3405 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3406 | } |
3407 | ||
3408 | /* Function: overlay_command | |
c378eb4e | 3409 | A place-holder for a mis-typed command. */ |
c906108c | 3410 | |
c378eb4e | 3411 | /* Command list chain containing all defined "overlay" subcommands. */ |
c906108c SS |
3412 | struct cmd_list_element *overlaylist; |
3413 | ||
3414 | static void | |
fba45db2 | 3415 | overlay_command (char *args, int from_tty) |
c906108c | 3416 | { |
c5aa993b | 3417 | printf_unfiltered |
c906108c SS |
3418 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3419 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3420 | } | |
3421 | ||
3422 | ||
3423 | /* Target Overlays for the "Simplest" overlay manager: | |
3424 | ||
5417f6dc RM |
3425 | This is GDB's default target overlay layer. It works with the |
3426 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3427 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3428 | so targets that use a different runtime overlay manager can |
c906108c SS |
3429 | substitute their own overlay_update function and take over the |
3430 | function pointer. | |
3431 | ||
3432 | The overlay_update function pokes around in the target's data structures | |
3433 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3434 | this information. | |
3435 | ||
3436 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3437 | unsigned _novlys; /# number of overlay sections #/ |
3438 | unsigned _ovly_table[_novlys][4] = { | |
3439 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3440 | {..., ..., ..., ...}, | |
3441 | } | |
3442 | unsigned _novly_regions; /# number of overlay regions #/ | |
3443 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3444 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3445 | {..., ..., ...}, | |
3446 | } | |
c906108c SS |
3447 | These functions will attempt to update GDB's mappedness state in the |
3448 | symbol section table, based on the target's mappedness state. | |
3449 | ||
3450 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3451 | attempt to detect when the cached copy is invalidated. The main | |
3452 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3453 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3454 | the target (whenever possible). */ |
c906108c SS |
3455 | |
3456 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3457 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3458 | static unsigned cache_novlys = 0; |
c906108c | 3459 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3460 | enum ovly_index |
3461 | { | |
3462 | VMA, SIZE, LMA, MAPPED | |
3463 | }; | |
c906108c | 3464 | |
c378eb4e | 3465 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3466 | static void |
fba45db2 | 3467 | simple_free_overlay_table (void) |
c906108c SS |
3468 | { |
3469 | if (cache_ovly_table) | |
b8c9b27d | 3470 | xfree (cache_ovly_table); |
c5aa993b | 3471 | cache_novlys = 0; |
c906108c SS |
3472 | cache_ovly_table = NULL; |
3473 | cache_ovly_table_base = 0; | |
3474 | } | |
3475 | ||
9216df95 | 3476 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3477 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3478 | static void |
9216df95 | 3479 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3480 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3481 | { |
c378eb4e | 3482 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3483 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3484 | int i; |
c906108c | 3485 | |
9216df95 | 3486 | read_memory (memaddr, buf, len * size); |
c906108c | 3487 | for (i = 0; i < len; i++) |
e17a4113 | 3488 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3489 | } |
3490 | ||
3491 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3492 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3493 | static int |
fba45db2 | 3494 | simple_read_overlay_table (void) |
c906108c | 3495 | { |
0d43edd1 | 3496 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3497 | struct gdbarch *gdbarch; |
3498 | int word_size; | |
e17a4113 | 3499 | enum bfd_endian byte_order; |
c906108c SS |
3500 | |
3501 | simple_free_overlay_table (); | |
9b27852e | 3502 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3503 | if (! novlys_msym) |
c906108c | 3504 | { |
8a3fe4f8 | 3505 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3506 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3507 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3508 | return 0; |
c906108c | 3509 | } |
0d43edd1 | 3510 | |
9b27852e | 3511 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3512 | if (! ovly_table_msym) |
3513 | { | |
8a3fe4f8 | 3514 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3515 | "`_ovly_table' array\n" |
8a3fe4f8 | 3516 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3517 | return 0; |
3518 | } | |
3519 | ||
9216df95 UW |
3520 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3521 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3522 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3523 | |
e17a4113 UW |
3524 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3525 | 4, byte_order); | |
0d43edd1 JB |
3526 | cache_ovly_table |
3527 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3528 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3529 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3530 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3531 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3532 | |
c5aa993b | 3533 | return 1; /* SUCCESS */ |
c906108c SS |
3534 | } |
3535 | ||
5417f6dc | 3536 | /* Function: simple_overlay_update_1 |
c906108c SS |
3537 | A helper function for simple_overlay_update. Assuming a cached copy |
3538 | of _ovly_table exists, look through it to find an entry whose vma, | |
3539 | lma and size match those of OSECT. Re-read the entry and make sure | |
3540 | it still matches OSECT (else the table may no longer be valid). | |
3541 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3542 | success, 0 for failure. */ | |
3543 | ||
3544 | static int | |
fba45db2 | 3545 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3546 | { |
3547 | int i, size; | |
fbd35540 MS |
3548 | bfd *obfd = osect->objfile->obfd; |
3549 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3550 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3551 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3552 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3553 | |
2c500098 | 3554 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3555 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3556 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3557 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3558 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3559 | { |
9216df95 UW |
3560 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3561 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3562 | 4, word_size, byte_order); |
fbd35540 MS |
3563 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3564 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3565 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3566 | { |
3567 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3568 | return 1; | |
3569 | } | |
c378eb4e | 3570 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3571 | return 0; |
3572 | } | |
3573 | return 0; | |
3574 | } | |
3575 | ||
3576 | /* Function: simple_overlay_update | |
5417f6dc RM |
3577 | If OSECT is NULL, then update all sections' mapped state |
3578 | (after re-reading the entire target _ovly_table). | |
3579 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3580 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3581 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3582 | re-read the entire cache, and go ahead and update all sections. */ |
3583 | ||
1c772458 | 3584 | void |
fba45db2 | 3585 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3586 | { |
c5aa993b | 3587 | struct objfile *objfile; |
c906108c | 3588 | |
c378eb4e | 3589 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3590 | if (osect) |
c378eb4e | 3591 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3592 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3593 | { |
3594 | /* Does its cached location match what's currently in the | |
3595 | symtab? */ | |
3596 | struct minimal_symbol *minsym | |
3597 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3598 | ||
3599 | if (minsym == NULL) | |
3600 | error (_("Error reading inferior's overlay table: couldn't " | |
3601 | "find `_ovly_table' array\n" | |
3602 | "in inferior. Use `overlay manual' mode.")); | |
3603 | ||
3604 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3605 | /* Then go ahead and try to look up this single section in | |
3606 | the cache. */ | |
3607 | if (simple_overlay_update_1 (osect)) | |
3608 | /* Found it! We're done. */ | |
3609 | return; | |
3610 | } | |
c906108c SS |
3611 | |
3612 | /* Cached table no good: need to read the entire table anew. | |
3613 | Or else we want all the sections, in which case it's actually | |
3614 | more efficient to read the whole table in one block anyway. */ | |
3615 | ||
0d43edd1 JB |
3616 | if (! simple_read_overlay_table ()) |
3617 | return; | |
3618 | ||
c378eb4e | 3619 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3620 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3621 | if (section_is_overlay (osect)) |
c5aa993b JM |
3622 | { |
3623 | int i, size; | |
fbd35540 MS |
3624 | bfd *obfd = osect->objfile->obfd; |
3625 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3626 | |
2c500098 | 3627 | size = bfd_get_section_size (bsect); |
c5aa993b | 3628 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3629 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3630 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3631 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3632 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3633 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3634 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3635 | } |
3636 | } | |
c906108c SS |
3637 | } |
3638 | ||
086df311 DJ |
3639 | /* Set the output sections and output offsets for section SECTP in |
3640 | ABFD. The relocation code in BFD will read these offsets, so we | |
3641 | need to be sure they're initialized. We map each section to itself, | |
3642 | with no offset; this means that SECTP->vma will be honored. */ | |
3643 | ||
3644 | static void | |
3645 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3646 | { | |
3647 | sectp->output_section = sectp; | |
3648 | sectp->output_offset = 0; | |
3649 | } | |
3650 | ||
ac8035ab TG |
3651 | /* Default implementation for sym_relocate. */ |
3652 | ||
3653 | ||
3654 | bfd_byte * | |
3655 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3656 | bfd_byte *buf) | |
3657 | { | |
3658 | bfd *abfd = objfile->obfd; | |
3659 | ||
3660 | /* We're only interested in sections with relocation | |
3661 | information. */ | |
3662 | if ((sectp->flags & SEC_RELOC) == 0) | |
3663 | return NULL; | |
3664 | ||
3665 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3666 | all sections begin at 0. */ | |
3667 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3668 | ||
3669 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3670 | } | |
3671 | ||
086df311 DJ |
3672 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3673 | contents are stored in BUF if it is non-NULL, or returned in a | |
3674 | malloc'd buffer otherwise. | |
3675 | ||
3676 | For some platforms and debug info formats, shared libraries contain | |
3677 | relocations against the debug sections (particularly for DWARF-2; | |
3678 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3679 | the version of the linker in use). Also, ELF object files naturally | |
3680 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3681 | the relocations in order to get the locations of symbols correct. |
3682 | Another example that may require relocation processing, is the | |
3683 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3684 | debug section. */ | |
086df311 DJ |
3685 | |
3686 | bfd_byte * | |
ac8035ab TG |
3687 | symfile_relocate_debug_section (struct objfile *objfile, |
3688 | asection *sectp, bfd_byte *buf) | |
086df311 | 3689 | { |
ac8035ab | 3690 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3691 | |
ac8035ab | 3692 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3693 | } |
c906108c | 3694 | |
31d99776 DJ |
3695 | struct symfile_segment_data * |
3696 | get_symfile_segment_data (bfd *abfd) | |
3697 | { | |
00b5771c | 3698 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3699 | |
3700 | if (sf == NULL) | |
3701 | return NULL; | |
3702 | ||
3703 | return sf->sym_segments (abfd); | |
3704 | } | |
3705 | ||
3706 | void | |
3707 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3708 | { | |
3709 | xfree (data->segment_bases); | |
3710 | xfree (data->segment_sizes); | |
3711 | xfree (data->segment_info); | |
3712 | xfree (data); | |
3713 | } | |
3714 | ||
28c32713 JB |
3715 | |
3716 | /* Given: | |
3717 | - DATA, containing segment addresses from the object file ABFD, and | |
3718 | the mapping from ABFD's sections onto the segments that own them, | |
3719 | and | |
3720 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3721 | segment addresses reported by the target, | |
3722 | store the appropriate offsets for each section in OFFSETS. | |
3723 | ||
3724 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3725 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3726 | ||
8d385431 DJ |
3727 | If there are more entries, then ignore the extra. The target may |
3728 | not be able to distinguish between an empty data segment and a | |
3729 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3730 | int |
3731 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3732 | struct section_offsets *offsets, | |
3733 | int num_segment_bases, | |
3734 | const CORE_ADDR *segment_bases) | |
3735 | { | |
3736 | int i; | |
3737 | asection *sect; | |
3738 | ||
28c32713 JB |
3739 | /* It doesn't make sense to call this function unless you have some |
3740 | segment base addresses. */ | |
202b96c1 | 3741 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3742 | |
31d99776 DJ |
3743 | /* If we do not have segment mappings for the object file, we |
3744 | can not relocate it by segments. */ | |
3745 | gdb_assert (data != NULL); | |
3746 | gdb_assert (data->num_segments > 0); | |
3747 | ||
31d99776 DJ |
3748 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3749 | { | |
31d99776 DJ |
3750 | int which = data->segment_info[i]; |
3751 | ||
28c32713 JB |
3752 | gdb_assert (0 <= which && which <= data->num_segments); |
3753 | ||
3754 | /* Don't bother computing offsets for sections that aren't | |
3755 | loaded as part of any segment. */ | |
3756 | if (! which) | |
3757 | continue; | |
3758 | ||
3759 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3760 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3761 | if (which > num_segment_bases) |
28c32713 | 3762 | which = num_segment_bases; |
31d99776 | 3763 | |
28c32713 JB |
3764 | offsets->offsets[i] = (segment_bases[which - 1] |
3765 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3766 | } |
3767 | ||
3768 | return 1; | |
3769 | } | |
3770 | ||
3771 | static void | |
3772 | symfile_find_segment_sections (struct objfile *objfile) | |
3773 | { | |
3774 | bfd *abfd = objfile->obfd; | |
3775 | int i; | |
3776 | asection *sect; | |
3777 | struct symfile_segment_data *data; | |
3778 | ||
3779 | data = get_symfile_segment_data (objfile->obfd); | |
3780 | if (data == NULL) | |
3781 | return; | |
3782 | ||
3783 | if (data->num_segments != 1 && data->num_segments != 2) | |
3784 | { | |
3785 | free_symfile_segment_data (data); | |
3786 | return; | |
3787 | } | |
3788 | ||
3789 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3790 | { | |
31d99776 DJ |
3791 | int which = data->segment_info[i]; |
3792 | ||
3793 | if (which == 1) | |
3794 | { | |
3795 | if (objfile->sect_index_text == -1) | |
3796 | objfile->sect_index_text = sect->index; | |
3797 | ||
3798 | if (objfile->sect_index_rodata == -1) | |
3799 | objfile->sect_index_rodata = sect->index; | |
3800 | } | |
3801 | else if (which == 2) | |
3802 | { | |
3803 | if (objfile->sect_index_data == -1) | |
3804 | objfile->sect_index_data = sect->index; | |
3805 | ||
3806 | if (objfile->sect_index_bss == -1) | |
3807 | objfile->sect_index_bss = sect->index; | |
3808 | } | |
3809 | } | |
3810 | ||
3811 | free_symfile_segment_data (data); | |
3812 | } | |
3813 | ||
c906108c | 3814 | void |
fba45db2 | 3815 | _initialize_symfile (void) |
c906108c SS |
3816 | { |
3817 | struct cmd_list_element *c; | |
c5aa993b | 3818 | |
1a966eab AC |
3819 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3820 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3821 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3822 | to execute."), &cmdlist); |
5ba2abeb | 3823 | set_cmd_completer (c, filename_completer); |
c906108c | 3824 | |
1a966eab | 3825 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3826 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3827 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3828 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3829 | The optional arguments are section-name section-address pairs and\n\ |
3830 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3831 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3832 | &cmdlist); |
5ba2abeb | 3833 | set_cmd_completer (c, filename_completer); |
c906108c | 3834 | |
1a966eab AC |
3835 | c = add_cmd ("load", class_files, load_command, _("\ |
3836 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3837 | for access from GDB.\n\ |
3838 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3839 | set_cmd_completer (c, filename_completer); |
c906108c | 3840 | |
5bf193a2 AC |
3841 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3842 | &symbol_reloading, _("\ | |
3843 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3844 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3845 | NULL, | |
920d2a44 | 3846 | show_symbol_reloading, |
5bf193a2 | 3847 | &setlist, &showlist); |
c906108c | 3848 | |
c5aa993b | 3849 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3850 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3851 | "overlay ", 0, &cmdlist); |
3852 | ||
3853 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3854 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3855 | ||
c5aa993b | 3856 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3857 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3858 | |
c5aa993b | 3859 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3860 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3861 | |
c5aa993b | 3862 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3863 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3864 | |
c5aa993b | 3865 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3866 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3867 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3868 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3869 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3870 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3871 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3872 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3873 | |
3874 | /* Filename extension to source language lookup table: */ | |
3875 | init_filename_language_table (); | |
26c41df3 AC |
3876 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3877 | &ext_args, _("\ | |
3878 | Set mapping between filename extension and source language."), _("\ | |
3879 | Show mapping between filename extension and source language."), _("\ | |
3880 | Usage: set extension-language .foo bar"), | |
3881 | set_ext_lang_command, | |
920d2a44 | 3882 | show_ext_args, |
26c41df3 | 3883 | &setlist, &showlist); |
c906108c | 3884 | |
c5aa993b | 3885 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3886 | _("All filename extensions associated with a source language.")); |
917317f4 | 3887 | |
525226b5 AC |
3888 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3889 | &debug_file_directory, _("\ | |
24ddea62 JK |
3890 | Set the directories where separate debug symbols are searched for."), _("\ |
3891 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3892 | Separate debug symbols are first searched for in the same\n\ |
3893 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3894 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3895 | each global debug-file-directory component prepended."), |
525226b5 | 3896 | NULL, |
920d2a44 | 3897 | show_debug_file_directory, |
525226b5 | 3898 | &setlist, &showlist); |
c906108c | 3899 | } |