Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1990-2014 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" |
fe898f56 | 48 | #include "block.h" |
ea53e89f | 49 | #include "observer.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
53ce3c39 | 62 | #include <sys/stat.h> |
c906108c SS |
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 | /* Functions this file defines. */ |
c906108c | 85 | |
a14ed312 | 86 | static void load_command (char *, int); |
c906108c | 87 | |
69150c3d | 88 | static void symbol_file_add_main_1 (const char *args, int from_tty, int flags); |
d7db6da9 | 89 | |
a14ed312 | 90 | static void add_symbol_file_command (char *, int); |
c906108c | 91 | |
00b5771c | 92 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 93 | |
a14ed312 | 94 | static void decrement_reading_symtab (void *); |
c906108c | 95 | |
a14ed312 | 96 | static void overlay_invalidate_all (void); |
c906108c | 97 | |
a14ed312 | 98 | static void overlay_auto_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void overlay_manual_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void overlay_off_command (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static void overlay_load_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | static void overlay_command (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void simple_free_overlay_table (void); |
c906108c | 109 | |
e17a4113 UW |
110 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
111 | enum bfd_endian); | |
c906108c | 112 | |
a14ed312 | 113 | static int simple_read_overlay_table (void); |
c906108c | 114 | |
a14ed312 | 115 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 116 | |
a14ed312 | 117 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 118 | |
a14ed312 | 119 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 120 | |
a14ed312 | 121 | static void init_filename_language_table (void); |
392a587b | 122 | |
31d99776 DJ |
123 | static void symfile_find_segment_sections (struct objfile *objfile); |
124 | ||
a14ed312 | 125 | void _initialize_symfile (void); |
c906108c SS |
126 | |
127 | /* List of all available sym_fns. On gdb startup, each object file reader | |
128 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 129 | prepared to read. */ |
c906108c | 130 | |
c256e171 DE |
131 | typedef struct |
132 | { | |
133 | /* BFD flavour that we handle. */ | |
134 | enum bfd_flavour sym_flavour; | |
135 | ||
136 | /* The "vtable" of symbol functions. */ | |
137 | const struct sym_fns *sym_fns; | |
138 | } registered_sym_fns; | |
00b5771c | 139 | |
c256e171 DE |
140 | DEF_VEC_O (registered_sym_fns); |
141 | ||
142 | static VEC (registered_sym_fns) *symtab_fns = NULL; | |
c906108c | 143 | |
770e7fc7 DE |
144 | /* Values for "set print symbol-loading". */ |
145 | ||
146 | const char print_symbol_loading_off[] = "off"; | |
147 | const char print_symbol_loading_brief[] = "brief"; | |
148 | const char print_symbol_loading_full[] = "full"; | |
149 | static const char *print_symbol_loading_enums[] = | |
150 | { | |
151 | print_symbol_loading_off, | |
152 | print_symbol_loading_brief, | |
153 | print_symbol_loading_full, | |
154 | NULL | |
155 | }; | |
156 | static const char *print_symbol_loading = print_symbol_loading_full; | |
157 | ||
b7209cb4 FF |
158 | /* If non-zero, shared library symbols will be added automatically |
159 | when the inferior is created, new libraries are loaded, or when | |
160 | attaching to the inferior. This is almost always what users will | |
161 | want to have happen; but for very large programs, the startup time | |
162 | will be excessive, and so if this is a problem, the user can clear | |
163 | this flag and then add the shared library symbols as needed. Note | |
164 | that there is a potential for confusion, since if the shared | |
c906108c | 165 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 166 | report all the functions that are actually present. */ |
c906108c SS |
167 | |
168 | int auto_solib_add = 1; | |
c906108c | 169 | \f |
c5aa993b | 170 | |
770e7fc7 DE |
171 | /* Return non-zero if symbol-loading messages should be printed. |
172 | FROM_TTY is the standard from_tty argument to gdb commands. | |
173 | If EXEC is non-zero the messages are for the executable. | |
174 | Otherwise, messages are for shared libraries. | |
175 | If FULL is non-zero then the caller is printing a detailed message. | |
176 | E.g., the message includes the shared library name. | |
177 | Otherwise, the caller is printing a brief "summary" message. */ | |
178 | ||
179 | int | |
180 | print_symbol_loading_p (int from_tty, int exec, int full) | |
181 | { | |
182 | if (!from_tty && !info_verbose) | |
183 | return 0; | |
184 | ||
185 | if (exec) | |
186 | { | |
187 | /* We don't check FULL for executables, there are few such | |
188 | messages, therefore brief == full. */ | |
189 | return print_symbol_loading != print_symbol_loading_off; | |
190 | } | |
191 | if (full) | |
192 | return print_symbol_loading == print_symbol_loading_full; | |
193 | return print_symbol_loading == print_symbol_loading_brief; | |
194 | } | |
195 | ||
0d14a781 | 196 | /* True if we are reading a symbol table. */ |
c906108c SS |
197 | |
198 | int currently_reading_symtab = 0; | |
199 | ||
200 | static void | |
fba45db2 | 201 | decrement_reading_symtab (void *dummy) |
c906108c SS |
202 | { |
203 | currently_reading_symtab--; | |
2cb9c859 | 204 | gdb_assert (currently_reading_symtab >= 0); |
c906108c SS |
205 | } |
206 | ||
ccefe4c4 TT |
207 | /* Increment currently_reading_symtab and return a cleanup that can be |
208 | used to decrement it. */ | |
3b7bacac | 209 | |
ccefe4c4 TT |
210 | struct cleanup * |
211 | increment_reading_symtab (void) | |
c906108c | 212 | { |
ccefe4c4 | 213 | ++currently_reading_symtab; |
2cb9c859 | 214 | gdb_assert (currently_reading_symtab > 0); |
ccefe4c4 | 215 | return make_cleanup (decrement_reading_symtab, NULL); |
c906108c SS |
216 | } |
217 | ||
5417f6dc RM |
218 | /* Remember the lowest-addressed loadable section we've seen. |
219 | This function is called via bfd_map_over_sections. | |
c906108c SS |
220 | |
221 | In case of equal vmas, the section with the largest size becomes the | |
222 | lowest-addressed loadable section. | |
223 | ||
224 | If the vmas and sizes are equal, the last section is considered the | |
225 | lowest-addressed loadable section. */ | |
226 | ||
227 | void | |
4efb68b1 | 228 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 229 | { |
c5aa993b | 230 | asection **lowest = (asection **) obj; |
c906108c | 231 | |
eb73e134 | 232 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
233 | return; |
234 | if (!*lowest) | |
235 | *lowest = sect; /* First loadable section */ | |
236 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
237 | *lowest = sect; /* A lower loadable section */ | |
238 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
239 | && (bfd_section_size (abfd, (*lowest)) | |
240 | <= bfd_section_size (abfd, sect))) | |
241 | *lowest = sect; | |
242 | } | |
243 | ||
d76488d8 TT |
244 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
245 | new object's 'num_sections' field is set to 0; it must be updated | |
246 | by the caller. */ | |
a39a16c4 MM |
247 | |
248 | struct section_addr_info * | |
249 | alloc_section_addr_info (size_t num_sections) | |
250 | { | |
251 | struct section_addr_info *sap; | |
252 | size_t size; | |
253 | ||
254 | size = (sizeof (struct section_addr_info) | |
255 | + sizeof (struct other_sections) * (num_sections - 1)); | |
256 | sap = (struct section_addr_info *) xmalloc (size); | |
257 | memset (sap, 0, size); | |
a39a16c4 MM |
258 | |
259 | return sap; | |
260 | } | |
62557bbc KB |
261 | |
262 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 263 | an existing section table. */ |
62557bbc KB |
264 | |
265 | extern struct section_addr_info * | |
0542c86d PA |
266 | build_section_addr_info_from_section_table (const struct target_section *start, |
267 | const struct target_section *end) | |
62557bbc KB |
268 | { |
269 | struct section_addr_info *sap; | |
0542c86d | 270 | const struct target_section *stp; |
62557bbc KB |
271 | int oidx; |
272 | ||
a39a16c4 | 273 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
274 | |
275 | for (stp = start, oidx = 0; stp != end; stp++) | |
276 | { | |
2b2848e2 DE |
277 | struct bfd_section *asect = stp->the_bfd_section; |
278 | bfd *abfd = asect->owner; | |
279 | ||
280 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 281 | && oidx < end - start) |
62557bbc KB |
282 | { |
283 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
284 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
285 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
286 | oidx++; |
287 | } | |
288 | } | |
289 | ||
d76488d8 TT |
290 | sap->num_sections = oidx; |
291 | ||
62557bbc KB |
292 | return sap; |
293 | } | |
294 | ||
82ccf5a5 | 295 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 296 | |
82ccf5a5 JK |
297 | static struct section_addr_info * |
298 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
299 | { |
300 | struct section_addr_info *sap; | |
301 | int i; | |
302 | struct bfd_section *sec; | |
303 | ||
82ccf5a5 JK |
304 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
305 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
306 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 307 | { |
82ccf5a5 JK |
308 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
309 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 310 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
311 | i++; |
312 | } | |
d76488d8 TT |
313 | |
314 | sap->num_sections = i; | |
315 | ||
089b4803 TG |
316 | return sap; |
317 | } | |
318 | ||
82ccf5a5 JK |
319 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
320 | ||
321 | struct section_addr_info * | |
322 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
323 | { | |
324 | struct section_addr_info *sap; | |
325 | int i; | |
326 | ||
327 | /* Before reread_symbols gets rewritten it is not safe to call: | |
328 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
329 | */ | |
330 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 331 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
332 | { |
333 | int sectindex = sap->other[i].sectindex; | |
334 | ||
335 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
336 | } | |
337 | return sap; | |
338 | } | |
62557bbc | 339 | |
c378eb4e | 340 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
341 | |
342 | extern void | |
343 | free_section_addr_info (struct section_addr_info *sap) | |
344 | { | |
345 | int idx; | |
346 | ||
a39a16c4 | 347 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 348 | xfree (sap->other[idx].name); |
b8c9b27d | 349 | xfree (sap); |
62557bbc KB |
350 | } |
351 | ||
e8289572 | 352 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 353 | |
e8289572 JB |
354 | static void |
355 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 356 | { |
e8289572 | 357 | asection *sect; |
c906108c | 358 | int i; |
5417f6dc | 359 | |
b8fbeb18 | 360 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 361 | if (sect) |
b8fbeb18 EZ |
362 | objfile->sect_index_text = sect->index; |
363 | ||
364 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 365 | if (sect) |
b8fbeb18 EZ |
366 | objfile->sect_index_data = sect->index; |
367 | ||
368 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 369 | if (sect) |
b8fbeb18 EZ |
370 | objfile->sect_index_bss = sect->index; |
371 | ||
372 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 373 | if (sect) |
b8fbeb18 EZ |
374 | objfile->sect_index_rodata = sect->index; |
375 | ||
bbcd32ad FF |
376 | /* This is where things get really weird... We MUST have valid |
377 | indices for the various sect_index_* members or gdb will abort. | |
378 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
379 | accomodate that. First, check for a file with the standard |
380 | one or two segments. */ | |
381 | ||
382 | symfile_find_segment_sections (objfile); | |
383 | ||
384 | /* Except when explicitly adding symbol files at some address, | |
385 | section_offsets contains nothing but zeros, so it doesn't matter | |
386 | which slot in section_offsets the individual sect_index_* members | |
387 | index into. So if they are all zero, it is safe to just point | |
388 | all the currently uninitialized indices to the first slot. But | |
389 | beware: if this is the main executable, it may be relocated | |
390 | later, e.g. by the remote qOffsets packet, and then this will | |
391 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
392 | |
393 | for (i = 0; i < objfile->num_sections; i++) | |
394 | { | |
395 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
396 | { | |
397 | break; | |
398 | } | |
399 | } | |
400 | if (i == objfile->num_sections) | |
401 | { | |
402 | if (objfile->sect_index_text == -1) | |
403 | objfile->sect_index_text = 0; | |
404 | if (objfile->sect_index_data == -1) | |
405 | objfile->sect_index_data = 0; | |
406 | if (objfile->sect_index_bss == -1) | |
407 | objfile->sect_index_bss = 0; | |
408 | if (objfile->sect_index_rodata == -1) | |
409 | objfile->sect_index_rodata = 0; | |
410 | } | |
b8fbeb18 | 411 | } |
c906108c | 412 | |
c1bd25fd DJ |
413 | /* The arguments to place_section. */ |
414 | ||
415 | struct place_section_arg | |
416 | { | |
417 | struct section_offsets *offsets; | |
418 | CORE_ADDR lowest; | |
419 | }; | |
420 | ||
421 | /* Find a unique offset to use for loadable section SECT if | |
422 | the user did not provide an offset. */ | |
423 | ||
2c0b251b | 424 | static void |
c1bd25fd DJ |
425 | place_section (bfd *abfd, asection *sect, void *obj) |
426 | { | |
427 | struct place_section_arg *arg = obj; | |
428 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
429 | int done; | |
3bd72c6f | 430 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 431 | |
2711e456 DJ |
432 | /* We are only interested in allocated sections. */ |
433 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
434 | return; |
435 | ||
436 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 437 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
438 | return; |
439 | ||
440 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
441 | start_addr = (arg->lowest + align - 1) & -align; |
442 | ||
c1bd25fd DJ |
443 | do { |
444 | asection *cur_sec; | |
c1bd25fd | 445 | |
c1bd25fd DJ |
446 | done = 1; |
447 | ||
448 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
449 | { | |
450 | int indx = cur_sec->index; | |
c1bd25fd DJ |
451 | |
452 | /* We don't need to compare against ourself. */ | |
453 | if (cur_sec == sect) | |
454 | continue; | |
455 | ||
2711e456 DJ |
456 | /* We can only conflict with allocated sections. */ |
457 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
458 | continue; |
459 | ||
460 | /* If the section offset is 0, either the section has not been placed | |
461 | yet, or it was the lowest section placed (in which case LOWEST | |
462 | will be past its end). */ | |
463 | if (offsets[indx] == 0) | |
464 | continue; | |
465 | ||
466 | /* If this section would overlap us, then we must move up. */ | |
467 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
468 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
469 | { | |
470 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
471 | start_addr = (start_addr + align - 1) & -align; | |
472 | done = 0; | |
3bd72c6f | 473 | break; |
c1bd25fd DJ |
474 | } |
475 | ||
476 | /* Otherwise, we appear to be OK. So far. */ | |
477 | } | |
478 | } | |
479 | while (!done); | |
480 | ||
65cf3563 | 481 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 482 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 483 | } |
e8289572 | 484 | |
75242ef4 JK |
485 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
486 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
487 | entries. */ | |
e8289572 JB |
488 | |
489 | void | |
75242ef4 JK |
490 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
491 | int num_sections, | |
3189cb12 | 492 | const struct section_addr_info *addrs) |
e8289572 JB |
493 | { |
494 | int i; | |
495 | ||
75242ef4 | 496 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 497 | |
c378eb4e | 498 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 499 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 500 | { |
3189cb12 | 501 | const struct other_sections *osp; |
e8289572 | 502 | |
75242ef4 | 503 | osp = &addrs->other[i]; |
5488dafb | 504 | if (osp->sectindex == -1) |
e8289572 JB |
505 | continue; |
506 | ||
c378eb4e | 507 | /* Record all sections in offsets. */ |
e8289572 | 508 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 509 | the BFD index. */ |
75242ef4 JK |
510 | section_offsets->offsets[osp->sectindex] = osp->addr; |
511 | } | |
512 | } | |
513 | ||
1276c759 JK |
514 | /* Transform section name S for a name comparison. prelink can split section |
515 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
516 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
517 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
518 | (`.sbss') section has invalid (increased) virtual address. */ | |
519 | ||
520 | static const char * | |
521 | addr_section_name (const char *s) | |
522 | { | |
523 | if (strcmp (s, ".dynbss") == 0) | |
524 | return ".bss"; | |
525 | if (strcmp (s, ".sdynbss") == 0) | |
526 | return ".sbss"; | |
527 | ||
528 | return s; | |
529 | } | |
530 | ||
82ccf5a5 JK |
531 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
532 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
533 | ||
534 | static int | |
535 | addrs_section_compar (const void *ap, const void *bp) | |
536 | { | |
537 | const struct other_sections *a = *((struct other_sections **) ap); | |
538 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 539 | int retval; |
82ccf5a5 | 540 | |
1276c759 | 541 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
542 | if (retval) |
543 | return retval; | |
544 | ||
5488dafb | 545 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
546 | } |
547 | ||
548 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
549 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
550 | ||
551 | static struct other_sections ** | |
552 | addrs_section_sort (struct section_addr_info *addrs) | |
553 | { | |
554 | struct other_sections **array; | |
555 | int i; | |
556 | ||
557 | /* `+ 1' for the NULL terminator. */ | |
558 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
d76488d8 | 559 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
560 | array[i] = &addrs->other[i]; |
561 | array[i] = NULL; | |
562 | ||
563 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
564 | ||
565 | return array; | |
566 | } | |
567 | ||
75242ef4 | 568 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
569 | also SECTINDEXes specific to ABFD there. This function can be used to |
570 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
571 | |
572 | void | |
573 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
574 | { | |
575 | asection *lower_sect; | |
75242ef4 JK |
576 | CORE_ADDR lower_offset; |
577 | int i; | |
82ccf5a5 JK |
578 | struct cleanup *my_cleanup; |
579 | struct section_addr_info *abfd_addrs; | |
580 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
581 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
582 | |
583 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
584 | continguous sections. */ |
585 | lower_sect = NULL; | |
586 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
587 | if (lower_sect == NULL) |
588 | { | |
589 | warning (_("no loadable sections found in added symbol-file %s"), | |
590 | bfd_get_filename (abfd)); | |
591 | lower_offset = 0; | |
e8289572 | 592 | } |
75242ef4 JK |
593 | else |
594 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
595 | ||
82ccf5a5 JK |
596 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
597 | in ABFD. Section names are not unique - there can be multiple sections of | |
598 | the same name. Also the sections of the same name do not have to be | |
599 | adjacent to each other. Some sections may be present only in one of the | |
600 | files. Even sections present in both files do not have to be in the same | |
601 | order. | |
602 | ||
603 | Use stable sort by name for the sections in both files. Then linearly | |
604 | scan both lists matching as most of the entries as possible. */ | |
605 | ||
606 | addrs_sorted = addrs_section_sort (addrs); | |
607 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
608 | ||
609 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
610 | make_cleanup_free_section_addr_info (abfd_addrs); | |
611 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
612 | make_cleanup (xfree, abfd_addrs_sorted); | |
613 | ||
c378eb4e MS |
614 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
615 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
616 | |
617 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
618 | * addrs->num_sections); | |
619 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
620 | ||
621 | while (*addrs_sorted) | |
622 | { | |
1276c759 | 623 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
624 | |
625 | while (*abfd_addrs_sorted | |
1276c759 JK |
626 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
627 | sect_name) < 0) | |
82ccf5a5 JK |
628 | abfd_addrs_sorted++; |
629 | ||
630 | if (*abfd_addrs_sorted | |
1276c759 JK |
631 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
632 | sect_name) == 0) | |
82ccf5a5 JK |
633 | { |
634 | int index_in_addrs; | |
635 | ||
636 | /* Make the found item directly addressable from ADDRS. */ | |
637 | index_in_addrs = *addrs_sorted - addrs->other; | |
638 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
639 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
640 | ||
641 | /* Never use the same ABFD entry twice. */ | |
642 | abfd_addrs_sorted++; | |
643 | } | |
644 | ||
645 | addrs_sorted++; | |
646 | } | |
647 | ||
75242ef4 JK |
648 | /* Calculate offsets for the loadable sections. |
649 | FIXME! Sections must be in order of increasing loadable section | |
650 | so that contiguous sections can use the lower-offset!!! | |
651 | ||
652 | Adjust offsets if the segments are not contiguous. | |
653 | If the section is contiguous, its offset should be set to | |
654 | the offset of the highest loadable section lower than it | |
655 | (the loadable section directly below it in memory). | |
656 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
657 | ||
d76488d8 | 658 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 659 | { |
82ccf5a5 | 660 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
661 | |
662 | if (sect) | |
75242ef4 | 663 | { |
c378eb4e | 664 | /* This is the index used by BFD. */ |
82ccf5a5 | 665 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
666 | |
667 | if (addrs->other[i].addr != 0) | |
75242ef4 | 668 | { |
82ccf5a5 | 669 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 670 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
671 | } |
672 | else | |
672d9c23 | 673 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
674 | } |
675 | else | |
672d9c23 | 676 | { |
1276c759 JK |
677 | /* addr_section_name transformation is not used for SECT_NAME. */ |
678 | const char *sect_name = addrs->other[i].name; | |
679 | ||
b0fcb67f JK |
680 | /* This section does not exist in ABFD, which is normally |
681 | unexpected and we want to issue a warning. | |
682 | ||
4d9743af JK |
683 | However, the ELF prelinker does create a few sections which are |
684 | marked in the main executable as loadable (they are loaded in | |
685 | memory from the DYNAMIC segment) and yet are not present in | |
686 | separate debug info files. This is fine, and should not cause | |
687 | a warning. Shared libraries contain just the section | |
688 | ".gnu.liblist" but it is not marked as loadable there. There is | |
689 | no other way to identify them than by their name as the sections | |
1276c759 JK |
690 | created by prelink have no special flags. |
691 | ||
692 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
693 | |
694 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 695 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
696 | || (strcmp (sect_name, ".bss") == 0 |
697 | && i > 0 | |
698 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
699 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
700 | || (strcmp (sect_name, ".sbss") == 0 | |
701 | && i > 0 | |
702 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
703 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
704 | warning (_("section %s not found in %s"), sect_name, |
705 | bfd_get_filename (abfd)); | |
706 | ||
672d9c23 | 707 | addrs->other[i].addr = 0; |
5488dafb | 708 | addrs->other[i].sectindex = -1; |
672d9c23 | 709 | } |
75242ef4 | 710 | } |
82ccf5a5 JK |
711 | |
712 | do_cleanups (my_cleanup); | |
75242ef4 JK |
713 | } |
714 | ||
715 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
716 | of how to represent it for fast symbol reading. This is the default | |
717 | version of the sym_fns.sym_offsets function for symbol readers that | |
718 | don't need to do anything special. It allocates a section_offsets table | |
719 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
720 | ||
721 | void | |
722 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 723 | const struct section_addr_info *addrs) |
75242ef4 | 724 | { |
d445b2f6 | 725 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
726 | objfile->section_offsets = (struct section_offsets *) |
727 | obstack_alloc (&objfile->objfile_obstack, | |
728 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
729 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
730 | objfile->num_sections, addrs); | |
e8289572 | 731 | |
c1bd25fd DJ |
732 | /* For relocatable files, all loadable sections will start at zero. |
733 | The zero is meaningless, so try to pick arbitrary addresses such | |
734 | that no loadable sections overlap. This algorithm is quadratic, | |
735 | but the number of sections in a single object file is generally | |
736 | small. */ | |
737 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
738 | { | |
739 | struct place_section_arg arg; | |
2711e456 DJ |
740 | bfd *abfd = objfile->obfd; |
741 | asection *cur_sec; | |
2711e456 DJ |
742 | |
743 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
744 | /* We do not expect this to happen; just skip this step if the | |
745 | relocatable file has a section with an assigned VMA. */ | |
746 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
747 | break; | |
748 | ||
749 | if (cur_sec == NULL) | |
750 | { | |
751 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
752 | ||
753 | /* Pick non-overlapping offsets for sections the user did not | |
754 | place explicitly. */ | |
755 | arg.offsets = objfile->section_offsets; | |
756 | arg.lowest = 0; | |
757 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
758 | ||
759 | /* Correctly filling in the section offsets is not quite | |
760 | enough. Relocatable files have two properties that | |
761 | (most) shared objects do not: | |
762 | ||
763 | - Their debug information will contain relocations. Some | |
764 | shared libraries do also, but many do not, so this can not | |
765 | be assumed. | |
766 | ||
767 | - If there are multiple code sections they will be loaded | |
768 | at different relative addresses in memory than they are | |
769 | in the objfile, since all sections in the file will start | |
770 | at address zero. | |
771 | ||
772 | Because GDB has very limited ability to map from an | |
773 | address in debug info to the correct code section, | |
774 | it relies on adding SECT_OFF_TEXT to things which might be | |
775 | code. If we clear all the section offsets, and set the | |
776 | section VMAs instead, then symfile_relocate_debug_section | |
777 | will return meaningful debug information pointing at the | |
778 | correct sections. | |
779 | ||
780 | GDB has too many different data structures for section | |
781 | addresses - a bfd, objfile, and so_list all have section | |
782 | tables, as does exec_ops. Some of these could probably | |
783 | be eliminated. */ | |
784 | ||
785 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
786 | cur_sec = cur_sec->next) | |
787 | { | |
788 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
789 | continue; | |
790 | ||
791 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
792 | exec_set_section_address (bfd_get_filename (abfd), |
793 | cur_sec->index, | |
30510692 | 794 | offsets[cur_sec->index]); |
2711e456 DJ |
795 | offsets[cur_sec->index] = 0; |
796 | } | |
797 | } | |
c1bd25fd DJ |
798 | } |
799 | ||
e8289572 | 800 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 801 | .rodata sections. */ |
e8289572 JB |
802 | init_objfile_sect_indices (objfile); |
803 | } | |
804 | ||
31d99776 DJ |
805 | /* Divide the file into segments, which are individual relocatable units. |
806 | This is the default version of the sym_fns.sym_segments function for | |
807 | symbol readers that do not have an explicit representation of segments. | |
808 | It assumes that object files do not have segments, and fully linked | |
809 | files have a single segment. */ | |
810 | ||
811 | struct symfile_segment_data * | |
812 | default_symfile_segments (bfd *abfd) | |
813 | { | |
814 | int num_sections, i; | |
815 | asection *sect; | |
816 | struct symfile_segment_data *data; | |
817 | CORE_ADDR low, high; | |
818 | ||
819 | /* Relocatable files contain enough information to position each | |
820 | loadable section independently; they should not be relocated | |
821 | in segments. */ | |
822 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
823 | return NULL; | |
824 | ||
825 | /* Make sure there is at least one loadable section in the file. */ | |
826 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
827 | { | |
828 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
829 | continue; | |
830 | ||
831 | break; | |
832 | } | |
833 | if (sect == NULL) | |
834 | return NULL; | |
835 | ||
836 | low = bfd_get_section_vma (abfd, sect); | |
837 | high = low + bfd_get_section_size (sect); | |
838 | ||
41bf6aca | 839 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 840 | data->num_segments = 1; |
fc270c35 TT |
841 | data->segment_bases = XCNEW (CORE_ADDR); |
842 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
843 | |
844 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 845 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
846 | |
847 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
848 | { | |
849 | CORE_ADDR vma; | |
850 | ||
851 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
852 | continue; | |
853 | ||
854 | vma = bfd_get_section_vma (abfd, sect); | |
855 | if (vma < low) | |
856 | low = vma; | |
857 | if (vma + bfd_get_section_size (sect) > high) | |
858 | high = vma + bfd_get_section_size (sect); | |
859 | ||
860 | data->segment_info[i] = 1; | |
861 | } | |
862 | ||
863 | data->segment_bases[0] = low; | |
864 | data->segment_sizes[0] = high - low; | |
865 | ||
866 | return data; | |
867 | } | |
868 | ||
608e2dbb TT |
869 | /* This is a convenience function to call sym_read for OBJFILE and |
870 | possibly force the partial symbols to be read. */ | |
871 | ||
872 | static void | |
873 | read_symbols (struct objfile *objfile, int add_flags) | |
874 | { | |
875 | (*objfile->sf->sym_read) (objfile, add_flags); | |
34643a32 | 876 | objfile->per_bfd->minsyms_read = 1; |
8a92335b JK |
877 | |
878 | /* find_separate_debug_file_in_section should be called only if there is | |
879 | single binary with no existing separate debug info file. */ | |
880 | if (!objfile_has_partial_symbols (objfile) | |
881 | && objfile->separate_debug_objfile == NULL | |
882 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb TT |
883 | { |
884 | bfd *abfd = find_separate_debug_file_in_section (objfile); | |
885 | struct cleanup *cleanup = make_cleanup_bfd_unref (abfd); | |
886 | ||
887 | if (abfd != NULL) | |
24ba069a JK |
888 | { |
889 | /* find_separate_debug_file_in_section uses the same filename for the | |
890 | virtual section-as-bfd like the bfd filename containing the | |
891 | section. Therefore use also non-canonical name form for the same | |
892 | file containing the section. */ | |
893 | symbol_file_add_separate (abfd, objfile->original_name, add_flags, | |
894 | objfile); | |
895 | } | |
608e2dbb TT |
896 | |
897 | do_cleanups (cleanup); | |
898 | } | |
899 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
900 | require_partial_symbols (objfile, 0); | |
901 | } | |
902 | ||
3d6e24f0 JB |
903 | /* Initialize entry point information for this objfile. */ |
904 | ||
905 | static void | |
906 | init_entry_point_info (struct objfile *objfile) | |
907 | { | |
6ef55de7 TT |
908 | struct entry_info *ei = &objfile->per_bfd->ei; |
909 | ||
910 | if (ei->initialized) | |
911 | return; | |
912 | ei->initialized = 1; | |
913 | ||
3d6e24f0 JB |
914 | /* Save startup file's range of PC addresses to help blockframe.c |
915 | decide where the bottom of the stack is. */ | |
916 | ||
917 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
918 | { | |
919 | /* Executable file -- record its entry point so we'll recognize | |
920 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
921 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
922 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
923 | } |
924 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
925 | && bfd_get_start_address (objfile->obfd) != 0) | |
926 | { | |
927 | /* Some shared libraries may have entry points set and be | |
928 | runnable. There's no clear way to indicate this, so just check | |
929 | for values other than zero. */ | |
6ef55de7 TT |
930 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
931 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
932 | } |
933 | else | |
934 | { | |
935 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 936 | ei->entry_point_p = 0; |
3d6e24f0 JB |
937 | } |
938 | ||
6ef55de7 | 939 | if (ei->entry_point_p) |
3d6e24f0 | 940 | { |
53eddfa6 | 941 | struct obj_section *osect; |
6ef55de7 | 942 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 943 | int found; |
3d6e24f0 JB |
944 | |
945 | /* Make certain that the address points at real code, and not a | |
946 | function descriptor. */ | |
947 | entry_point | |
df6d5441 | 948 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
949 | entry_point, |
950 | ¤t_target); | |
951 | ||
952 | /* Remove any ISA markers, so that this matches entries in the | |
953 | symbol table. */ | |
6ef55de7 | 954 | ei->entry_point |
df6d5441 | 955 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
956 | |
957 | found = 0; | |
958 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
959 | { | |
960 | struct bfd_section *sect = osect->the_bfd_section; | |
961 | ||
962 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
963 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
964 | + bfd_get_section_size (sect))) | |
965 | { | |
6ef55de7 | 966 | ei->the_bfd_section_index |
53eddfa6 TT |
967 | = gdb_bfd_section_index (objfile->obfd, sect); |
968 | found = 1; | |
969 | break; | |
970 | } | |
971 | } | |
972 | ||
973 | if (!found) | |
6ef55de7 | 974 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
975 | } |
976 | } | |
977 | ||
c906108c SS |
978 | /* Process a symbol file, as either the main file or as a dynamically |
979 | loaded file. | |
980 | ||
36e4d068 JB |
981 | This function does not set the OBJFILE's entry-point info. |
982 | ||
96baa820 JM |
983 | OBJFILE is where the symbols are to be read from. |
984 | ||
7e8580c1 JB |
985 | ADDRS is the list of section load addresses. If the user has given |
986 | an 'add-symbol-file' command, then this is the list of offsets and | |
987 | addresses he or she provided as arguments to the command; or, if | |
988 | we're handling a shared library, these are the actual addresses the | |
989 | sections are loaded at, according to the inferior's dynamic linker | |
990 | (as gleaned by GDB's shared library code). We convert each address | |
991 | into an offset from the section VMA's as it appears in the object | |
992 | file, and then call the file's sym_offsets function to convert this | |
993 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 994 | |
7eedccfa PP |
995 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
996 | an extra symbol file such as dynamically loaded code, and wether | |
997 | breakpoint reset should be deferred. */ | |
c906108c | 998 | |
36e4d068 JB |
999 | static void |
1000 | syms_from_objfile_1 (struct objfile *objfile, | |
1001 | struct section_addr_info *addrs, | |
36e4d068 | 1002 | int add_flags) |
c906108c | 1003 | { |
a39a16c4 | 1004 | struct section_addr_info *local_addr = NULL; |
c906108c | 1005 | struct cleanup *old_chain; |
7eedccfa | 1006 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 1007 | |
8fb8eb5c | 1008 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 1009 | |
75245b24 | 1010 | if (objfile->sf == NULL) |
36e4d068 JB |
1011 | { |
1012 | /* No symbols to load, but we still need to make sure | |
1013 | that the section_offsets table is allocated. */ | |
d445b2f6 | 1014 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 1015 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
1016 | |
1017 | objfile->num_sections = num_sections; | |
1018 | objfile->section_offsets | |
1019 | = obstack_alloc (&objfile->objfile_obstack, size); | |
1020 | memset (objfile->section_offsets, 0, size); | |
1021 | return; | |
1022 | } | |
75245b24 | 1023 | |
c906108c SS |
1024 | /* Make sure that partially constructed symbol tables will be cleaned up |
1025 | if an error occurs during symbol reading. */ | |
74b7792f | 1026 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 1027 | |
6bf667bb DE |
1028 | /* If ADDRS is NULL, put together a dummy address list. |
1029 | We now establish the convention that an addr of zero means | |
c378eb4e | 1030 | no load address was specified. */ |
6bf667bb | 1031 | if (! addrs) |
a39a16c4 | 1032 | { |
d445b2f6 | 1033 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1034 | make_cleanup (xfree, local_addr); |
1035 | addrs = local_addr; | |
1036 | } | |
1037 | ||
c5aa993b | 1038 | if (mainline) |
c906108c SS |
1039 | { |
1040 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1041 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1042 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1043 | |
1044 | /* Since no error yet, throw away the old symbol table. */ | |
1045 | ||
1046 | if (symfile_objfile != NULL) | |
1047 | { | |
1048 | free_objfile (symfile_objfile); | |
adb7f338 | 1049 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1050 | } |
1051 | ||
1052 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1053 | If the user wants to get rid of them, they should do "symbol-file" |
1054 | without arguments first. Not sure this is the best behavior | |
1055 | (PR 2207). */ | |
c906108c | 1056 | |
c5aa993b | 1057 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1058 | } |
1059 | ||
1060 | /* Convert addr into an offset rather than an absolute address. | |
1061 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1062 | and assume that <addr> is where that got loaded. |
c906108c | 1063 | |
53a5351d JM |
1064 | We no longer warn if the lowest section is not a text segment (as |
1065 | happens for the PA64 port. */ | |
6bf667bb | 1066 | if (addrs->num_sections > 0) |
75242ef4 | 1067 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1068 | |
1069 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1070 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1071 | initial symbol reading for this file. */ |
c906108c | 1072 | |
c5aa993b | 1073 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1074 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1075 | |
6bf667bb | 1076 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1077 | |
608e2dbb | 1078 | read_symbols (objfile, add_flags); |
b11896a5 | 1079 | |
c906108c SS |
1080 | /* Discard cleanups as symbol reading was successful. */ |
1081 | ||
1082 | discard_cleanups (old_chain); | |
f7545552 | 1083 | xfree (local_addr); |
c906108c SS |
1084 | } |
1085 | ||
36e4d068 JB |
1086 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1087 | entry-point info. */ | |
1088 | ||
6bf667bb | 1089 | static void |
36e4d068 JB |
1090 | syms_from_objfile (struct objfile *objfile, |
1091 | struct section_addr_info *addrs, | |
36e4d068 JB |
1092 | int add_flags) |
1093 | { | |
6bf667bb | 1094 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1095 | init_entry_point_info (objfile); |
1096 | } | |
1097 | ||
c906108c SS |
1098 | /* Perform required actions after either reading in the initial |
1099 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1100 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1101 | |
c906108c | 1102 | void |
7eedccfa | 1103 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1104 | { |
c906108c | 1105 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1106 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1107 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1108 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1109 | { |
1110 | /* OK, make it the "real" symbol file. */ | |
1111 | symfile_objfile = objfile; | |
1112 | ||
c1e56572 | 1113 | clear_symtab_users (add_flags); |
c906108c | 1114 | } |
7eedccfa | 1115 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1116 | { |
69de3c6a | 1117 | breakpoint_re_set (); |
c906108c SS |
1118 | } |
1119 | ||
1120 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1121 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1122 | } |
1123 | ||
1124 | /* Process a symbol file, as either the main file or as a dynamically | |
1125 | loaded file. | |
1126 | ||
5417f6dc | 1127 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1128 | A new reference is acquired by this function. |
7904e09f | 1129 | |
24ba069a JK |
1130 | For NAME description see allocate_objfile's definition. |
1131 | ||
7eedccfa PP |
1132 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1133 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1134 | |
6bf667bb | 1135 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1136 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1137 | |
63524580 JK |
1138 | PARENT is the original objfile if ABFD is a separate debug info file. |
1139 | Otherwise PARENT is NULL. | |
1140 | ||
c906108c | 1141 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1142 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1143 | |
7904e09f | 1144 | static struct objfile * |
24ba069a | 1145 | symbol_file_add_with_addrs (bfd *abfd, const char *name, int add_flags, |
6bf667bb DE |
1146 | struct section_addr_info *addrs, |
1147 | int flags, struct objfile *parent) | |
c906108c SS |
1148 | { |
1149 | struct objfile *objfile; | |
7eedccfa | 1150 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1151 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1152 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1153 | && (readnow_symbol_files |
1154 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1155 | |
9291a0cd | 1156 | if (readnow_symbol_files) |
b11896a5 TT |
1157 | { |
1158 | flags |= OBJF_READNOW; | |
1159 | add_flags &= ~SYMFILE_NO_READ; | |
1160 | } | |
9291a0cd | 1161 | |
5417f6dc RM |
1162 | /* Give user a chance to burp if we'd be |
1163 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1164 | |
1165 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1166 | && mainline |
c906108c | 1167 | && from_tty |
9e2f0ad4 | 1168 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1169 | error (_("Not confirmed.")); |
c906108c | 1170 | |
24ba069a JK |
1171 | objfile = allocate_objfile (abfd, name, |
1172 | flags | (mainline ? OBJF_MAINLINE : 0)); | |
c906108c | 1173 | |
63524580 JK |
1174 | if (parent) |
1175 | add_separate_debug_objfile (objfile, parent); | |
1176 | ||
78a4a9b9 AC |
1177 | /* We either created a new mapped symbol table, mapped an existing |
1178 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1179 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1180 | if (should_print) |
c906108c | 1181 | { |
769d7dc4 AC |
1182 | if (deprecated_pre_add_symbol_hook) |
1183 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1184 | else |
c906108c | 1185 | { |
55333a84 DE |
1186 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1187 | wrap_here (""); | |
1188 | gdb_flush (gdb_stdout); | |
c906108c | 1189 | } |
c906108c | 1190 | } |
6bf667bb | 1191 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1192 | |
1193 | /* We now have at least a partial symbol table. Check to see if the | |
1194 | user requested that all symbols be read on initial access via either | |
1195 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1196 | all partial symbol tables for this objfile if so. */ |
c906108c | 1197 | |
9291a0cd | 1198 | if ((flags & OBJF_READNOW)) |
c906108c | 1199 | { |
b11896a5 | 1200 | if (should_print) |
c906108c | 1201 | { |
a3f17187 | 1202 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1203 | wrap_here (""); |
1204 | gdb_flush (gdb_stdout); | |
1205 | } | |
1206 | ||
ccefe4c4 TT |
1207 | if (objfile->sf) |
1208 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1209 | } |
1210 | ||
b11896a5 | 1211 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1212 | { |
1213 | wrap_here (""); | |
55333a84 | 1214 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1215 | wrap_here (""); |
1216 | } | |
1217 | ||
b11896a5 | 1218 | if (should_print) |
c906108c | 1219 | { |
769d7dc4 AC |
1220 | if (deprecated_post_add_symbol_hook) |
1221 | deprecated_post_add_symbol_hook (); | |
c906108c | 1222 | else |
55333a84 | 1223 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1224 | } |
1225 | ||
481d0f41 JB |
1226 | /* We print some messages regardless of whether 'from_tty || |
1227 | info_verbose' is true, so make sure they go out at the right | |
1228 | time. */ | |
1229 | gdb_flush (gdb_stdout); | |
1230 | ||
109f874e | 1231 | if (objfile->sf == NULL) |
8caee43b PP |
1232 | { |
1233 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1234 | return objfile; /* No symbols. */ |
8caee43b | 1235 | } |
109f874e | 1236 | |
7eedccfa | 1237 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1238 | |
06d3b283 | 1239 | observer_notify_new_objfile (objfile); |
c906108c | 1240 | |
ce7d4522 | 1241 | bfd_cache_close_all (); |
c906108c SS |
1242 | return (objfile); |
1243 | } | |
1244 | ||
24ba069a JK |
1245 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
1246 | see allocate_objfile's definition. */ | |
9cce227f TG |
1247 | |
1248 | void | |
24ba069a JK |
1249 | symbol_file_add_separate (bfd *bfd, const char *name, int symfile_flags, |
1250 | struct objfile *objfile) | |
9cce227f | 1251 | { |
15d123c9 | 1252 | struct objfile *new_objfile; |
089b4803 TG |
1253 | struct section_addr_info *sap; |
1254 | struct cleanup *my_cleanup; | |
1255 | ||
1256 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1257 | because sections of BFD may not match sections of OBJFILE and because | |
1258 | vma may have been modified by tools such as prelink. */ | |
1259 | sap = build_section_addr_info_from_objfile (objfile); | |
1260 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1261 | |
6bf667bb | 1262 | new_objfile = symbol_file_add_with_addrs |
24ba069a | 1263 | (bfd, name, symfile_flags, sap, |
9cce227f | 1264 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1265 | | OBJF_USERLOADED), |
1266 | objfile); | |
089b4803 TG |
1267 | |
1268 | do_cleanups (my_cleanup); | |
9cce227f | 1269 | } |
7904e09f | 1270 | |
eb4556d7 JB |
1271 | /* Process the symbol file ABFD, as either the main file or as a |
1272 | dynamically loaded file. | |
6bf667bb | 1273 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1274 | |
eb4556d7 | 1275 | struct objfile * |
24ba069a | 1276 | symbol_file_add_from_bfd (bfd *abfd, const char *name, int add_flags, |
eb4556d7 | 1277 | struct section_addr_info *addrs, |
63524580 | 1278 | int flags, struct objfile *parent) |
eb4556d7 | 1279 | { |
24ba069a JK |
1280 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1281 | parent); | |
eb4556d7 JB |
1282 | } |
1283 | ||
7904e09f | 1284 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1285 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1286 | |
7904e09f | 1287 | struct objfile * |
69150c3d JK |
1288 | symbol_file_add (const char *name, int add_flags, |
1289 | struct section_addr_info *addrs, int flags) | |
7904e09f | 1290 | { |
8ac244b4 TT |
1291 | bfd *bfd = symfile_bfd_open (name); |
1292 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1293 | struct objfile *objf; | |
1294 | ||
24ba069a | 1295 | objf = symbol_file_add_from_bfd (bfd, name, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1296 | do_cleanups (cleanup); |
1297 | return objf; | |
7904e09f JB |
1298 | } |
1299 | ||
d7db6da9 FN |
1300 | /* Call symbol_file_add() with default values and update whatever is |
1301 | affected by the loading of a new main(). | |
1302 | Used when the file is supplied in the gdb command line | |
1303 | and by some targets with special loading requirements. | |
1304 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1305 | argument for the switches that can only be specified in the symbol_file | |
1306 | command itself. */ | |
5417f6dc | 1307 | |
1adeb98a | 1308 | void |
69150c3d | 1309 | symbol_file_add_main (const char *args, int from_tty) |
1adeb98a | 1310 | { |
d7db6da9 FN |
1311 | symbol_file_add_main_1 (args, from_tty, 0); |
1312 | } | |
1313 | ||
1314 | static void | |
69150c3d | 1315 | symbol_file_add_main_1 (const char *args, int from_tty, int flags) |
d7db6da9 | 1316 | { |
7dcd53a0 TT |
1317 | const int add_flags = (current_inferior ()->symfile_flags |
1318 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1319 | ||
7eedccfa | 1320 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1321 | |
d7db6da9 FN |
1322 | /* Getting new symbols may change our opinion about |
1323 | what is frameless. */ | |
1324 | reinit_frame_cache (); | |
1325 | ||
7dcd53a0 TT |
1326 | if ((flags & SYMFILE_NO_READ) == 0) |
1327 | set_initial_language (); | |
1adeb98a FN |
1328 | } |
1329 | ||
1330 | void | |
1331 | symbol_file_clear (int from_tty) | |
1332 | { | |
1333 | if ((have_full_symbols () || have_partial_symbols ()) | |
1334 | && from_tty | |
0430b0d6 AS |
1335 | && (symfile_objfile |
1336 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1337 | objfile_name (symfile_objfile)) |
0430b0d6 | 1338 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1339 | error (_("Not confirmed.")); |
1adeb98a | 1340 | |
0133421a JK |
1341 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1342 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1343 | no_shared_libraries (NULL, from_tty); |
1344 | ||
0133421a JK |
1345 | free_all_objfiles (); |
1346 | ||
adb7f338 | 1347 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1348 | if (from_tty) |
1349 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1350 | } |
1351 | ||
5b5d99cf | 1352 | static int |
287ccc17 | 1353 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1354 | struct objfile *parent_objfile) |
5b5d99cf | 1355 | { |
904578ed JK |
1356 | unsigned long file_crc; |
1357 | int file_crc_p; | |
f1838a98 | 1358 | bfd *abfd; |
32a0e547 | 1359 | struct stat parent_stat, abfd_stat; |
904578ed | 1360 | int verified_as_different; |
32a0e547 JK |
1361 | |
1362 | /* Find a separate debug info file as if symbols would be present in | |
1363 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1364 | section can contain just the basename of PARENT_OBJFILE without any | |
1365 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1366 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1367 | |
4262abfb | 1368 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1369 | return 0; |
5b5d99cf | 1370 | |
08d2cd74 | 1371 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1372 | |
1373 | if (!abfd) | |
5b5d99cf JB |
1374 | return 0; |
1375 | ||
0ba1096a | 1376 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1377 | |
1378 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1379 | st_ino; they always set it to zero. (Windows does provide a | |
1380 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1381 | case. While there is no guarantee that a system that provides | |
1382 | meaningful inode numbers will never set st_ino to zero, this is | |
1383 | merely an optimization, so we do not need to worry about false | |
1384 | negatives. */ | |
1385 | ||
1386 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1387 | && abfd_stat.st_ino != 0 |
1388 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1389 | { |
904578ed JK |
1390 | if (abfd_stat.st_dev == parent_stat.st_dev |
1391 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1392 | { | |
cbb099e8 | 1393 | gdb_bfd_unref (abfd); |
904578ed JK |
1394 | return 0; |
1395 | } | |
1396 | verified_as_different = 1; | |
32a0e547 | 1397 | } |
904578ed JK |
1398 | else |
1399 | verified_as_different = 0; | |
32a0e547 | 1400 | |
dccee2de | 1401 | file_crc_p = gdb_bfd_crc (abfd, &file_crc); |
5b5d99cf | 1402 | |
cbb099e8 | 1403 | gdb_bfd_unref (abfd); |
5b5d99cf | 1404 | |
904578ed JK |
1405 | if (!file_crc_p) |
1406 | return 0; | |
1407 | ||
287ccc17 JK |
1408 | if (crc != file_crc) |
1409 | { | |
dccee2de TT |
1410 | unsigned long parent_crc; |
1411 | ||
904578ed JK |
1412 | /* If one (or both) the files are accessed for example the via "remote:" |
1413 | gdbserver way it does not support the bfd_stat operation. Verify | |
1414 | whether those two files are not the same manually. */ | |
1415 | ||
dccee2de | 1416 | if (!verified_as_different) |
904578ed | 1417 | { |
dccee2de | 1418 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1419 | return 0; |
1420 | } | |
1421 | ||
dccee2de | 1422 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1423 | warning (_("the debug information found in \"%s\"" |
1424 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1425 | name, objfile_name (parent_objfile)); |
904578ed | 1426 | |
287ccc17 JK |
1427 | return 0; |
1428 | } | |
1429 | ||
1430 | return 1; | |
5b5d99cf JB |
1431 | } |
1432 | ||
aa28a74e | 1433 | char *debug_file_directory = NULL; |
920d2a44 AC |
1434 | static void |
1435 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1436 | struct cmd_list_element *c, const char *value) | |
1437 | { | |
3e43a32a MS |
1438 | fprintf_filtered (file, |
1439 | _("The directory where separate debug " | |
1440 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1441 | value); |
1442 | } | |
5b5d99cf JB |
1443 | |
1444 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1445 | #define DEBUG_SUBDIRECTORY ".debug" | |
1446 | #endif | |
1447 | ||
1db33378 PP |
1448 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1449 | where the original file resides (may not be the same as | |
1450 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1451 | looking for. CANON_DIR is the "realpath" form of DIR. |
1452 | DIR must contain a trailing '/'. | |
1453 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1454 | |
1455 | static char * | |
1456 | find_separate_debug_file (const char *dir, | |
1457 | const char *canon_dir, | |
1458 | const char *debuglink, | |
1459 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1460 | { |
1db33378 PP |
1461 | char *debugdir; |
1462 | char *debugfile; | |
9cce227f | 1463 | int i; |
e4ab2fad JK |
1464 | VEC (char_ptr) *debugdir_vec; |
1465 | struct cleanup *back_to; | |
1466 | int ix; | |
5b5d99cf | 1467 | |
1db33378 | 1468 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1469 | i = strlen (dir); |
1db33378 PP |
1470 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1471 | i = strlen (canon_dir); | |
1ffa32ee | 1472 | |
25522fae JK |
1473 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1474 | + i | |
1475 | + strlen (DEBUG_SUBDIRECTORY) | |
1476 | + strlen ("/") | |
1db33378 | 1477 | + strlen (debuglink) |
25522fae | 1478 | + 1); |
5b5d99cf JB |
1479 | |
1480 | /* First try in the same directory as the original file. */ | |
1481 | strcpy (debugfile, dir); | |
1db33378 | 1482 | strcat (debugfile, debuglink); |
5b5d99cf | 1483 | |
32a0e547 | 1484 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1485 | return debugfile; |
5417f6dc | 1486 | |
5b5d99cf JB |
1487 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1488 | strcpy (debugfile, dir); | |
1489 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1490 | strcat (debugfile, "/"); | |
1db33378 | 1491 | strcat (debugfile, debuglink); |
5b5d99cf | 1492 | |
32a0e547 | 1493 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1494 | return debugfile; |
5417f6dc | 1495 | |
24ddea62 | 1496 | /* Then try in the global debugfile directories. |
f888f159 | 1497 | |
24ddea62 JK |
1498 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1499 | cause "/..." lookups. */ | |
5417f6dc | 1500 | |
e4ab2fad JK |
1501 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1502 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1503 | |
e4ab2fad JK |
1504 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1505 | { | |
1506 | strcpy (debugfile, debugdir); | |
aa28a74e | 1507 | strcat (debugfile, "/"); |
24ddea62 | 1508 | strcat (debugfile, dir); |
1db33378 | 1509 | strcat (debugfile, debuglink); |
aa28a74e | 1510 | |
32a0e547 | 1511 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1512 | { |
1513 | do_cleanups (back_to); | |
1514 | return debugfile; | |
1515 | } | |
24ddea62 JK |
1516 | |
1517 | /* If the file is in the sysroot, try using its base path in the | |
1518 | global debugfile directory. */ | |
1db33378 PP |
1519 | if (canon_dir != NULL |
1520 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1521 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1522 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1523 | { |
e4ab2fad | 1524 | strcpy (debugfile, debugdir); |
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)) |
a991ac28 TT |
1530 | { |
1531 | do_cleanups (back_to); | |
1532 | return debugfile; | |
1533 | } | |
24ddea62 | 1534 | } |
aa28a74e | 1535 | } |
f888f159 | 1536 | |
e4ab2fad | 1537 | do_cleanups (back_to); |
25522fae | 1538 | xfree (debugfile); |
1db33378 PP |
1539 | return NULL; |
1540 | } | |
1541 | ||
7edbb660 | 1542 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1543 | If there were no directory separators in PATH, PATH will be empty |
1544 | string on return. */ | |
1545 | ||
1546 | static void | |
1547 | terminate_after_last_dir_separator (char *path) | |
1548 | { | |
1549 | int i; | |
1550 | ||
1551 | /* Strip off the final filename part, leaving the directory name, | |
1552 | followed by a slash. The directory can be relative or absolute. */ | |
1553 | for (i = strlen(path) - 1; i >= 0; i--) | |
1554 | if (IS_DIR_SEPARATOR (path[i])) | |
1555 | break; | |
1556 | ||
1557 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1558 | path[i + 1] = '\0'; | |
1559 | } | |
1560 | ||
1561 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1562 | Returns pathname, or NULL. */ | |
1563 | ||
1564 | char * | |
1565 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1566 | { | |
1567 | char *debuglink; | |
1568 | char *dir, *canon_dir; | |
1569 | char *debugfile; | |
1570 | unsigned long crc32; | |
1571 | struct cleanup *cleanups; | |
1572 | ||
cc0ea93c | 1573 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1574 | |
1575 | if (debuglink == NULL) | |
1576 | { | |
1577 | /* There's no separate debug info, hence there's no way we could | |
1578 | load it => no warning. */ | |
1579 | return NULL; | |
1580 | } | |
1581 | ||
71bdabee | 1582 | cleanups = make_cleanup (xfree, debuglink); |
4262abfb | 1583 | dir = xstrdup (objfile_name (objfile)); |
71bdabee | 1584 | make_cleanup (xfree, dir); |
1db33378 PP |
1585 | terminate_after_last_dir_separator (dir); |
1586 | canon_dir = lrealpath (dir); | |
1587 | ||
1588 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1589 | crc32, objfile); | |
1590 | xfree (canon_dir); | |
1591 | ||
1592 | if (debugfile == NULL) | |
1593 | { | |
1594 | #ifdef HAVE_LSTAT | |
1595 | /* For PR gdb/9538, try again with realpath (if different from the | |
1596 | original). */ | |
1597 | ||
1598 | struct stat st_buf; | |
1599 | ||
4262abfb JK |
1600 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1601 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 PP |
1602 | { |
1603 | char *symlink_dir; | |
1604 | ||
4262abfb | 1605 | symlink_dir = lrealpath (objfile_name (objfile)); |
1db33378 PP |
1606 | if (symlink_dir != NULL) |
1607 | { | |
1608 | make_cleanup (xfree, symlink_dir); | |
1609 | terminate_after_last_dir_separator (symlink_dir); | |
1610 | if (strcmp (dir, symlink_dir) != 0) | |
1611 | { | |
1612 | /* Different directory, so try using it. */ | |
1613 | debugfile = find_separate_debug_file (symlink_dir, | |
1614 | symlink_dir, | |
1615 | debuglink, | |
1616 | crc32, | |
1617 | objfile); | |
1618 | } | |
1619 | } | |
1620 | } | |
1621 | #endif /* HAVE_LSTAT */ | |
1622 | } | |
aa28a74e | 1623 | |
1db33378 | 1624 | do_cleanups (cleanups); |
25522fae | 1625 | return debugfile; |
5b5d99cf JB |
1626 | } |
1627 | ||
c906108c SS |
1628 | /* This is the symbol-file command. Read the file, analyze its |
1629 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1630 | the command is rather bizarre: |
1631 | ||
1632 | 1. The function buildargv implements various quoting conventions | |
1633 | which are undocumented and have little or nothing in common with | |
1634 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1635 | ||
1636 | 2. Options are used, which are not generally used in GDB (perhaps | |
1637 | "set mapped on", "set readnow on" would be better) | |
1638 | ||
1639 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1640 | conventions (because it is confusing and inconvenient). */ |
1641 | ||
1642 | void | |
fba45db2 | 1643 | symbol_file_command (char *args, int from_tty) |
c906108c | 1644 | { |
c906108c SS |
1645 | dont_repeat (); |
1646 | ||
1647 | if (args == NULL) | |
1648 | { | |
1adeb98a | 1649 | symbol_file_clear (from_tty); |
c906108c SS |
1650 | } |
1651 | else | |
1652 | { | |
d1a41061 | 1653 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1654 | int flags = OBJF_USERLOADED; |
1655 | struct cleanup *cleanups; | |
1656 | char *name = NULL; | |
1657 | ||
7a292a7a | 1658 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1659 | while (*argv != NULL) |
1660 | { | |
78a4a9b9 AC |
1661 | if (strcmp (*argv, "-readnow") == 0) |
1662 | flags |= OBJF_READNOW; | |
1663 | else if (**argv == '-') | |
8a3fe4f8 | 1664 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1665 | else |
1666 | { | |
cb2f3a29 | 1667 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1668 | name = *argv; |
78a4a9b9 | 1669 | } |
cb2f3a29 | 1670 | |
c906108c SS |
1671 | argv++; |
1672 | } | |
1673 | ||
1674 | if (name == NULL) | |
cb2f3a29 MK |
1675 | error (_("no symbol file name was specified")); |
1676 | ||
c906108c SS |
1677 | do_cleanups (cleanups); |
1678 | } | |
1679 | } | |
1680 | ||
1681 | /* Set the initial language. | |
1682 | ||
cb2f3a29 MK |
1683 | FIXME: A better solution would be to record the language in the |
1684 | psymtab when reading partial symbols, and then use it (if known) to | |
1685 | set the language. This would be a win for formats that encode the | |
1686 | language in an easily discoverable place, such as DWARF. For | |
1687 | stabs, we can jump through hoops looking for specially named | |
1688 | symbols or try to intuit the language from the specific type of | |
1689 | stabs we find, but we can't do that until later when we read in | |
1690 | full symbols. */ | |
c906108c | 1691 | |
8b60591b | 1692 | void |
fba45db2 | 1693 | set_initial_language (void) |
c906108c | 1694 | { |
9e6c82ad | 1695 | enum language lang = main_language (); |
c906108c | 1696 | |
9e6c82ad | 1697 | if (lang == language_unknown) |
01f8c46d | 1698 | { |
bf6d8a91 TT |
1699 | char *name = main_name (); |
1700 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL); | |
f888f159 | 1701 | |
bf6d8a91 TT |
1702 | if (sym != NULL) |
1703 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 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 | 1716 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1717 | open it normally. Returns a new reference to the BFD. On error, |
1718 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1719 | |
1720 | bfd * | |
08d2cd74 | 1721 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1722 | { |
520b0001 TT |
1723 | bfd *result; |
1724 | ||
874f5765 | 1725 | if (remote_filename_p (name)) |
520b0001 | 1726 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1727 | else |
1c00ec6b | 1728 | result = gdb_bfd_open (name, gnutarget, -1); |
520b0001 | 1729 | |
520b0001 | 1730 | return result; |
874f5765 TG |
1731 | } |
1732 | ||
cb2f3a29 MK |
1733 | /* Open the file specified by NAME and hand it off to BFD for |
1734 | preliminary analysis. Return a newly initialized bfd *, which | |
1735 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1736 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1737 | |
1738 | bfd * | |
69150c3d | 1739 | symfile_bfd_open (const char *cname) |
c906108c SS |
1740 | { |
1741 | bfd *sym_bfd; | |
1742 | int desc; | |
69150c3d | 1743 | char *name, *absolute_name; |
faab9922 | 1744 | struct cleanup *back_to; |
c906108c | 1745 | |
69150c3d | 1746 | if (remote_filename_p (cname)) |
f1838a98 | 1747 | { |
69150c3d | 1748 | sym_bfd = remote_bfd_open (cname, gnutarget); |
f1838a98 | 1749 | if (!sym_bfd) |
69150c3d | 1750 | error (_("`%s': can't open to read symbols: %s."), cname, |
a4453b7e | 1751 | bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
1752 | |
1753 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1754 | { | |
f9a062ff | 1755 | make_cleanup_bfd_unref (sym_bfd); |
69150c3d | 1756 | error (_("`%s': can't read symbols: %s."), cname, |
f1838a98 UW |
1757 | bfd_errmsg (bfd_get_error ())); |
1758 | } | |
1759 | ||
1760 | return sym_bfd; | |
1761 | } | |
1762 | ||
69150c3d | 1763 | name = tilde_expand (cname); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1764 | |
1765 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
492c0ab7 | 1766 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, 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"); |
492c0ab7 JK |
1774 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, |
1775 | exename, 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 | 1783 | |
cb2f3a29 MK |
1784 | xfree (name); |
1785 | name = absolute_name; | |
faab9922 | 1786 | back_to = make_cleanup (xfree, name); |
c906108c | 1787 | |
1c00ec6b | 1788 | sym_bfd = gdb_bfd_open (name, gnutarget, desc); |
c906108c | 1789 | if (!sym_bfd) |
faab9922 JK |
1790 | error (_("`%s': can't open to read symbols: %s."), name, |
1791 | bfd_errmsg (bfd_get_error ())); | |
549c1eea | 1792 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1793 | |
1794 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1795 | { | |
f9a062ff | 1796 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1797 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1798 | bfd_errmsg (bfd_get_error ())); |
1799 | } | |
cb2f3a29 | 1800 | |
faab9922 JK |
1801 | do_cleanups (back_to); |
1802 | ||
cb2f3a29 | 1803 | return sym_bfd; |
c906108c SS |
1804 | } |
1805 | ||
cb2f3a29 MK |
1806 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1807 | the section was not found. */ | |
1808 | ||
0e931cf0 JB |
1809 | int |
1810 | get_section_index (struct objfile *objfile, char *section_name) | |
1811 | { | |
1812 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1813 | |
0e931cf0 JB |
1814 | if (sect) |
1815 | return sect->index; | |
1816 | else | |
1817 | return -1; | |
1818 | } | |
1819 | ||
c256e171 DE |
1820 | /* Link SF into the global symtab_fns list. |
1821 | FLAVOUR is the file format that SF handles. | |
1822 | Called on startup by the _initialize routine in each object file format | |
1823 | reader, to register information about each format the reader is prepared | |
1824 | to handle. */ | |
c906108c SS |
1825 | |
1826 | void | |
c256e171 | 1827 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1828 | { |
c256e171 DE |
1829 | registered_sym_fns fns = { flavour, sf }; |
1830 | ||
1831 | VEC_safe_push (registered_sym_fns, symtab_fns, &fns); | |
c906108c SS |
1832 | } |
1833 | ||
cb2f3a29 MK |
1834 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1835 | either returns or calls error(). The result is an initialized | |
1836 | struct sym_fns in the objfile structure, that contains cached | |
1837 | information about the symbol file. */ | |
c906108c | 1838 | |
00b5771c | 1839 | static const struct sym_fns * |
31d99776 | 1840 | find_sym_fns (bfd *abfd) |
c906108c | 1841 | { |
c256e171 | 1842 | registered_sym_fns *rsf; |
31d99776 | 1843 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1844 | int i; |
c906108c | 1845 | |
75245b24 MS |
1846 | if (our_flavour == bfd_target_srec_flavour |
1847 | || our_flavour == bfd_target_ihex_flavour | |
1848 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1849 | return NULL; /* No symbols. */ |
75245b24 | 1850 | |
c256e171 DE |
1851 | for (i = 0; VEC_iterate (registered_sym_fns, symtab_fns, i, rsf); ++i) |
1852 | if (our_flavour == rsf->sym_flavour) | |
1853 | return rsf->sym_fns; | |
cb2f3a29 | 1854 | |
8a3fe4f8 | 1855 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1856 | bfd_get_target (abfd)); |
c906108c SS |
1857 | } |
1858 | \f | |
cb2f3a29 | 1859 | |
c906108c SS |
1860 | /* This function runs the load command of our current target. */ |
1861 | ||
1862 | static void | |
fba45db2 | 1863 | load_command (char *arg, int from_tty) |
c906108c | 1864 | { |
5b3fca71 TT |
1865 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1866 | ||
e5cc9f32 JB |
1867 | dont_repeat (); |
1868 | ||
4487aabf PA |
1869 | /* The user might be reloading because the binary has changed. Take |
1870 | this opportunity to check. */ | |
1871 | reopen_exec_file (); | |
1872 | reread_symbols (); | |
1873 | ||
c906108c | 1874 | if (arg == NULL) |
1986bccd AS |
1875 | { |
1876 | char *parg; | |
1877 | int count = 0; | |
1878 | ||
1879 | parg = arg = get_exec_file (1); | |
1880 | ||
1881 | /* Count how many \ " ' tab space there are in the name. */ | |
1882 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1883 | { | |
1884 | parg++; | |
1885 | count++; | |
1886 | } | |
1887 | ||
1888 | if (count) | |
1889 | { | |
1890 | /* We need to quote this string so buildargv can pull it apart. */ | |
1891 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1892 | char *ptemp = temp; | |
1893 | char *prev; | |
1894 | ||
1895 | make_cleanup (xfree, temp); | |
1896 | ||
1897 | prev = parg = arg; | |
1898 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1899 | { | |
1900 | strncpy (ptemp, prev, parg - prev); | |
1901 | ptemp += parg - prev; | |
1902 | prev = parg++; | |
1903 | *ptemp++ = '\\'; | |
1904 | } | |
1905 | strcpy (ptemp, prev); | |
1906 | ||
1907 | arg = temp; | |
1908 | } | |
1909 | } | |
1910 | ||
c906108c | 1911 | target_load (arg, from_tty); |
2889e661 JB |
1912 | |
1913 | /* After re-loading the executable, we don't really know which | |
1914 | overlays are mapped any more. */ | |
1915 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1916 | |
1917 | do_cleanups (cleanup); | |
c906108c SS |
1918 | } |
1919 | ||
1920 | /* This version of "load" should be usable for any target. Currently | |
1921 | it is just used for remote targets, not inftarg.c or core files, | |
1922 | on the theory that only in that case is it useful. | |
1923 | ||
1924 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1925 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1926 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1927 | performance compares. */ | |
917317f4 | 1928 | |
917317f4 JM |
1929 | static int validate_download = 0; |
1930 | ||
e4f9b4d5 MS |
1931 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1932 | ||
1933 | static void | |
1934 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1935 | { | |
1936 | bfd_size_type *sum = data; | |
1937 | ||
2c500098 | 1938 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1939 | } |
1940 | ||
1941 | /* Opaque data for load_section_callback. */ | |
1942 | struct load_section_data { | |
f698ca8e | 1943 | CORE_ADDR load_offset; |
a76d924d DJ |
1944 | struct load_progress_data *progress_data; |
1945 | VEC(memory_write_request_s) *requests; | |
1946 | }; | |
1947 | ||
1948 | /* Opaque data for load_progress. */ | |
1949 | struct load_progress_data { | |
1950 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1951 | unsigned long write_count; |
1952 | unsigned long data_count; | |
1953 | bfd_size_type total_size; | |
a76d924d DJ |
1954 | }; |
1955 | ||
1956 | /* Opaque data for load_progress for a single section. */ | |
1957 | struct load_progress_section_data { | |
1958 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1959 | |
a76d924d | 1960 | /* Per-section data. */ |
cf7a04e8 DJ |
1961 | const char *section_name; |
1962 | ULONGEST section_sent; | |
1963 | ULONGEST section_size; | |
1964 | CORE_ADDR lma; | |
1965 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1966 | }; |
1967 | ||
a76d924d | 1968 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1969 | |
1970 | static void | |
1971 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1972 | { | |
a76d924d DJ |
1973 | struct load_progress_section_data *args = untyped_arg; |
1974 | struct load_progress_data *totals; | |
1975 | ||
1976 | if (args == NULL) | |
1977 | /* Writing padding data. No easy way to get at the cumulative | |
1978 | stats, so just ignore this. */ | |
1979 | return; | |
1980 | ||
1981 | totals = args->cumulative; | |
1982 | ||
1983 | if (bytes == 0 && args->section_sent == 0) | |
1984 | { | |
1985 | /* The write is just starting. Let the user know we've started | |
1986 | this section. */ | |
79a45e25 | 1987 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 | 1988 | args->section_name, hex_string (args->section_size), |
f5656ead | 1989 | paddress (target_gdbarch (), args->lma)); |
a76d924d DJ |
1990 | return; |
1991 | } | |
cf7a04e8 DJ |
1992 | |
1993 | if (validate_download) | |
1994 | { | |
1995 | /* Broken memories and broken monitors manifest themselves here | |
1996 | when bring new computers to life. This doubles already slow | |
1997 | downloads. */ | |
1998 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1999 | might add a verify_memory() method to the target vector and | |
2000 | then use that. remote.c could implement that method using | |
2001 | the ``qCRC'' packet. */ | |
2002 | gdb_byte *check = xmalloc (bytes); | |
2003 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
2004 | ||
2005 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 2006 | error (_("Download verify read failed at %s"), |
f5656ead | 2007 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 2008 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 2009 | error (_("Download verify compare failed at %s"), |
f5656ead | 2010 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
2011 | do_cleanups (verify_cleanups); |
2012 | } | |
a76d924d | 2013 | totals->data_count += bytes; |
cf7a04e8 DJ |
2014 | args->lma += bytes; |
2015 | args->buffer += bytes; | |
a76d924d | 2016 | totals->write_count += 1; |
cf7a04e8 | 2017 | args->section_sent += bytes; |
522002f9 | 2018 | if (check_quit_flag () |
cf7a04e8 DJ |
2019 | || (deprecated_ui_load_progress_hook != NULL |
2020 | && deprecated_ui_load_progress_hook (args->section_name, | |
2021 | args->section_sent))) | |
2022 | error (_("Canceled the download")); | |
2023 | ||
2024 | if (deprecated_show_load_progress != NULL) | |
2025 | deprecated_show_load_progress (args->section_name, | |
2026 | args->section_sent, | |
2027 | args->section_size, | |
a76d924d DJ |
2028 | totals->data_count, |
2029 | totals->total_size); | |
cf7a04e8 DJ |
2030 | } |
2031 | ||
e4f9b4d5 MS |
2032 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2033 | ||
2034 | static void | |
2035 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2036 | { | |
a76d924d | 2037 | struct memory_write_request *new_request; |
e4f9b4d5 | 2038 | struct load_section_data *args = data; |
a76d924d | 2039 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
2040 | bfd_size_type size = bfd_get_section_size (asec); |
2041 | gdb_byte *buffer; | |
cf7a04e8 | 2042 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2043 | |
cf7a04e8 DJ |
2044 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2045 | return; | |
e4f9b4d5 | 2046 | |
cf7a04e8 DJ |
2047 | if (size == 0) |
2048 | return; | |
e4f9b4d5 | 2049 | |
a76d924d DJ |
2050 | new_request = VEC_safe_push (memory_write_request_s, |
2051 | args->requests, NULL); | |
2052 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
2053 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
2054 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
2055 | new_request->end = new_request->begin + size; /* FIXME Should size |
2056 | be in instead? */ | |
a76d924d DJ |
2057 | new_request->data = xmalloc (size); |
2058 | new_request->baton = section_data; | |
cf7a04e8 | 2059 | |
a76d924d | 2060 | buffer = new_request->data; |
cf7a04e8 | 2061 | |
a76d924d DJ |
2062 | section_data->cumulative = args->progress_data; |
2063 | section_data->section_name = sect_name; | |
2064 | section_data->section_size = size; | |
2065 | section_data->lma = new_request->begin; | |
2066 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2067 | |
2068 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2069 | } |
2070 | ||
2071 | /* Clean up an entire memory request vector, including load | |
2072 | data and progress records. */ | |
cf7a04e8 | 2073 | |
a76d924d DJ |
2074 | static void |
2075 | clear_memory_write_data (void *arg) | |
2076 | { | |
2077 | VEC(memory_write_request_s) **vec_p = arg; | |
2078 | VEC(memory_write_request_s) *vec = *vec_p; | |
2079 | int i; | |
2080 | struct memory_write_request *mr; | |
cf7a04e8 | 2081 | |
a76d924d DJ |
2082 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2083 | { | |
2084 | xfree (mr->data); | |
2085 | xfree (mr->baton); | |
2086 | } | |
2087 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2088 | } |
2089 | ||
c906108c | 2090 | void |
9cbe5fff | 2091 | generic_load (const char *args, int from_tty) |
c906108c | 2092 | { |
c906108c | 2093 | bfd *loadfile_bfd; |
2b71414d | 2094 | struct timeval start_time, end_time; |
917317f4 | 2095 | char *filename; |
1986bccd | 2096 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2097 | struct load_section_data cbdata; |
a76d924d | 2098 | struct load_progress_data total_progress; |
79a45e25 | 2099 | struct ui_out *uiout = current_uiout; |
a76d924d | 2100 | |
e4f9b4d5 | 2101 | CORE_ADDR entry; |
1986bccd | 2102 | char **argv; |
e4f9b4d5 | 2103 | |
a76d924d DJ |
2104 | memset (&cbdata, 0, sizeof (cbdata)); |
2105 | memset (&total_progress, 0, sizeof (total_progress)); | |
2106 | cbdata.progress_data = &total_progress; | |
2107 | ||
2108 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2109 | |
d1a41061 PP |
2110 | if (args == NULL) |
2111 | error_no_arg (_("file to load")); | |
1986bccd | 2112 | |
d1a41061 | 2113 | argv = gdb_buildargv (args); |
1986bccd AS |
2114 | make_cleanup_freeargv (argv); |
2115 | ||
2116 | filename = tilde_expand (argv[0]); | |
2117 | make_cleanup (xfree, filename); | |
2118 | ||
2119 | if (argv[1] != NULL) | |
917317f4 | 2120 | { |
f698ca8e | 2121 | const char *endptr; |
ba5f2f8a | 2122 | |
f698ca8e | 2123 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2124 | |
2125 | /* If the last word was not a valid number then | |
2126 | treat it as a file name with spaces in. */ | |
2127 | if (argv[1] == endptr) | |
2128 | error (_("Invalid download offset:%s."), argv[1]); | |
2129 | ||
2130 | if (argv[2] != NULL) | |
2131 | error (_("Too many parameters.")); | |
917317f4 | 2132 | } |
c906108c | 2133 | |
c378eb4e | 2134 | /* Open the file for loading. */ |
1c00ec6b | 2135 | loadfile_bfd = gdb_bfd_open (filename, gnutarget, -1); |
c906108c SS |
2136 | if (loadfile_bfd == NULL) |
2137 | { | |
2138 | perror_with_name (filename); | |
2139 | return; | |
2140 | } | |
917317f4 | 2141 | |
f9a062ff | 2142 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2143 | |
c5aa993b | 2144 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2145 | { |
8a3fe4f8 | 2146 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2147 | bfd_errmsg (bfd_get_error ())); |
2148 | } | |
c5aa993b | 2149 | |
5417f6dc | 2150 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2151 | (void *) &total_progress.total_size); |
2152 | ||
2153 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2154 | |
2b71414d | 2155 | gettimeofday (&start_time, NULL); |
c906108c | 2156 | |
a76d924d DJ |
2157 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2158 | load_progress) != 0) | |
2159 | error (_("Load failed")); | |
c906108c | 2160 | |
2b71414d | 2161 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2162 | |
e4f9b4d5 | 2163 | entry = bfd_get_start_address (loadfile_bfd); |
8c2b9656 | 2164 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
e4f9b4d5 | 2165 | ui_out_text (uiout, "Start address "); |
f5656ead | 2166 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch (), entry)); |
e4f9b4d5 | 2167 | ui_out_text (uiout, ", load size "); |
a76d924d | 2168 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2169 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2170 | /* We were doing this in remote-mips.c, I suspect it is right |
2171 | for other targets too. */ | |
fb14de7b | 2172 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2173 | |
38963c97 DJ |
2174 | /* Reset breakpoints, now that we have changed the load image. For |
2175 | instance, breakpoints may have been set (or reset, by | |
2176 | post_create_inferior) while connected to the target but before we | |
2177 | loaded the program. In that case, the prologue analyzer could | |
2178 | have read instructions from the target to find the right | |
2179 | breakpoint locations. Loading has changed the contents of that | |
2180 | memory. */ | |
2181 | ||
2182 | breakpoint_re_set (); | |
2183 | ||
7ca9f392 AC |
2184 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2185 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2186 | was commented out), making the call confuses GDB if more than one | |
2187 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2188 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2189 | |
a76d924d DJ |
2190 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2191 | total_progress.write_count, | |
2192 | &start_time, &end_time); | |
c906108c SS |
2193 | |
2194 | do_cleanups (old_cleanups); | |
2195 | } | |
2196 | ||
c378eb4e | 2197 | /* Report how fast the transfer went. */ |
c906108c | 2198 | |
917317f4 | 2199 | void |
d9fcf2fb | 2200 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2201 | unsigned long data_count, |
2202 | unsigned long write_count, | |
2b71414d DJ |
2203 | const struct timeval *start_time, |
2204 | const struct timeval *end_time) | |
917317f4 | 2205 | { |
9f43d28c | 2206 | ULONGEST time_count; |
79a45e25 | 2207 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2208 | |
2209 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2210 | accuracy and overflow. */ | |
2211 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2212 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2213 | ||
8b93c638 JM |
2214 | ui_out_text (uiout, "Transfer rate: "); |
2215 | if (time_count > 0) | |
2216 | { | |
9f43d28c DJ |
2217 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2218 | ||
2219 | if (ui_out_is_mi_like_p (uiout)) | |
2220 | { | |
2221 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2222 | ui_out_text (uiout, " bits/sec"); | |
2223 | } | |
2224 | else if (rate < 1024) | |
2225 | { | |
2226 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2227 | ui_out_text (uiout, " bytes/sec"); | |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2232 | ui_out_text (uiout, " KB/sec"); | |
2233 | } | |
8b93c638 JM |
2234 | } |
2235 | else | |
2236 | { | |
ba5f2f8a | 2237 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2238 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2239 | } |
2240 | if (write_count > 0) | |
2241 | { | |
2242 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2243 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2244 | ui_out_text (uiout, " bytes/write"); |
2245 | } | |
2246 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2247 | } |
2248 | ||
2249 | /* This function allows the addition of incrementally linked object files. | |
2250 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2251 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2252 | special case syntax for the rombug target (Rombug is the boot | |
2253 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2254 | rombug case, the user doesn't need to supply a text address, | |
2255 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2256 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2257 | |
c906108c | 2258 | static void |
fba45db2 | 2259 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2260 | { |
5af949e3 | 2261 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2262 | char *filename = NULL; |
d03de421 | 2263 | int flags = OBJF_USERLOADED | OBJF_SHARED; |
c906108c | 2264 | char *arg; |
db162d44 | 2265 | int section_index = 0; |
2acceee2 JM |
2266 | int argcnt = 0; |
2267 | int sec_num = 0; | |
2268 | int i; | |
db162d44 EZ |
2269 | int expecting_sec_name = 0; |
2270 | int expecting_sec_addr = 0; | |
5b96932b | 2271 | char **argv; |
76ad5e1e | 2272 | struct objfile *objf; |
db162d44 | 2273 | |
a39a16c4 | 2274 | struct sect_opt |
2acceee2 | 2275 | { |
2acceee2 JM |
2276 | char *name; |
2277 | char *value; | |
a39a16c4 | 2278 | }; |
db162d44 | 2279 | |
a39a16c4 MM |
2280 | struct section_addr_info *section_addrs; |
2281 | struct sect_opt *sect_opts = NULL; | |
2282 | size_t num_sect_opts = 0; | |
3017564a | 2283 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2284 | |
a39a16c4 | 2285 | num_sect_opts = 16; |
5417f6dc | 2286 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2287 | * sizeof (struct sect_opt)); |
2288 | ||
c906108c SS |
2289 | dont_repeat (); |
2290 | ||
2291 | if (args == NULL) | |
8a3fe4f8 | 2292 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2293 | |
d1a41061 | 2294 | argv = gdb_buildargv (args); |
5b96932b | 2295 | make_cleanup_freeargv (argv); |
db162d44 | 2296 | |
5b96932b AS |
2297 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2298 | { | |
c378eb4e | 2299 | /* Process the argument. */ |
db162d44 | 2300 | if (argcnt == 0) |
c906108c | 2301 | { |
c378eb4e | 2302 | /* The first argument is the file name. */ |
db162d44 | 2303 | filename = tilde_expand (arg); |
3017564a | 2304 | make_cleanup (xfree, filename); |
c906108c | 2305 | } |
41dc8db8 MB |
2306 | else if (argcnt == 1) |
2307 | { | |
2308 | /* The second argument is always the text address at which | |
2309 | to load the program. */ | |
2310 | sect_opts[section_index].name = ".text"; | |
2311 | sect_opts[section_index].value = arg; | |
2312 | if (++section_index >= num_sect_opts) | |
2313 | { | |
2314 | num_sect_opts *= 2; | |
2315 | sect_opts = ((struct sect_opt *) | |
2316 | xrealloc (sect_opts, | |
2317 | num_sect_opts | |
2318 | * sizeof (struct sect_opt))); | |
2319 | } | |
2320 | } | |
db162d44 | 2321 | else |
41dc8db8 MB |
2322 | { |
2323 | /* It's an option (starting with '-') or it's an argument | |
2324 | to an option. */ | |
41dc8db8 MB |
2325 | if (expecting_sec_name) |
2326 | { | |
2327 | sect_opts[section_index].name = arg; | |
2328 | expecting_sec_name = 0; | |
2329 | } | |
2330 | else if (expecting_sec_addr) | |
2331 | { | |
2332 | sect_opts[section_index].value = arg; | |
2333 | expecting_sec_addr = 0; | |
2334 | if (++section_index >= num_sect_opts) | |
2335 | { | |
2336 | num_sect_opts *= 2; | |
2337 | sect_opts = ((struct sect_opt *) | |
2338 | xrealloc (sect_opts, | |
2339 | num_sect_opts | |
2340 | * sizeof (struct sect_opt))); | |
2341 | } | |
2342 | } | |
2343 | else if (strcmp (arg, "-readnow") == 0) | |
2344 | flags |= OBJF_READNOW; | |
2345 | else if (strcmp (arg, "-s") == 0) | |
2346 | { | |
2347 | expecting_sec_name = 1; | |
2348 | expecting_sec_addr = 1; | |
2349 | } | |
2350 | else | |
2351 | error (_("USAGE: add-symbol-file <filename> <textaddress>" | |
2352 | " [-readnow] [-s <secname> <addr>]*")); | |
2353 | } | |
c906108c | 2354 | } |
c906108c | 2355 | |
927890d0 JB |
2356 | /* This command takes at least two arguments. The first one is a |
2357 | filename, and the second is the address where this file has been | |
2358 | loaded. Abort now if this address hasn't been provided by the | |
2359 | user. */ | |
2360 | if (section_index < 1) | |
2361 | error (_("The address where %s has been loaded is missing"), filename); | |
2362 | ||
c378eb4e | 2363 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2364 | a sect_addr_info structure to be passed around to other |
2365 | functions. We have to split this up into separate print | |
bb599908 | 2366 | statements because hex_string returns a local static |
c378eb4e | 2367 | string. */ |
5417f6dc | 2368 | |
a3f17187 | 2369 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2370 | section_addrs = alloc_section_addr_info (section_index); |
2371 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2372 | for (i = 0; i < section_index; i++) |
c906108c | 2373 | { |
db162d44 EZ |
2374 | CORE_ADDR addr; |
2375 | char *val = sect_opts[i].value; | |
2376 | char *sec = sect_opts[i].name; | |
5417f6dc | 2377 | |
ae822768 | 2378 | addr = parse_and_eval_address (val); |
db162d44 | 2379 | |
db162d44 | 2380 | /* Here we store the section offsets in the order they were |
c378eb4e | 2381 | entered on the command line. */ |
a39a16c4 MM |
2382 | section_addrs->other[sec_num].name = sec; |
2383 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2384 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2385 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2386 | sec_num++; |
2387 | ||
5417f6dc | 2388 | /* The object's sections are initialized when a |
db162d44 | 2389 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2390 | This happens in reread_symbols. |
db162d44 EZ |
2391 | At this point, we don't know what file type this is, |
2392 | so we can't determine what section names are valid. */ | |
2acceee2 | 2393 | } |
d76488d8 | 2394 | section_addrs->num_sections = sec_num; |
db162d44 | 2395 | |
2acceee2 | 2396 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2397 | error (_("Not confirmed.")); |
c906108c | 2398 | |
76ad5e1e NB |
2399 | objf = symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2400 | section_addrs, flags); | |
2401 | ||
2402 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2403 | |
2404 | /* Getting new symbols may change our opinion about what is | |
2405 | frameless. */ | |
2406 | reinit_frame_cache (); | |
db162d44 | 2407 | do_cleanups (my_cleanups); |
c906108c SS |
2408 | } |
2409 | \f | |
70992597 | 2410 | |
63644780 NB |
2411 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2412 | ||
2413 | static void | |
2414 | remove_symbol_file_command (char *args, int from_tty) | |
2415 | { | |
2416 | char **argv; | |
2417 | struct objfile *objf = NULL; | |
2418 | struct cleanup *my_cleanups; | |
2419 | struct program_space *pspace = current_program_space; | |
2420 | struct gdbarch *gdbarch = get_current_arch (); | |
2421 | ||
2422 | dont_repeat (); | |
2423 | ||
2424 | if (args == NULL) | |
2425 | error (_("remove-symbol-file: no symbol file provided")); | |
2426 | ||
2427 | my_cleanups = make_cleanup (null_cleanup, NULL); | |
2428 | ||
2429 | argv = gdb_buildargv (args); | |
2430 | ||
2431 | if (strcmp (argv[0], "-a") == 0) | |
2432 | { | |
2433 | /* Interpret the next argument as an address. */ | |
2434 | CORE_ADDR addr; | |
2435 | ||
2436 | if (argv[1] == NULL) | |
2437 | error (_("Missing address argument")); | |
2438 | ||
2439 | if (argv[2] != NULL) | |
2440 | error (_("Junk after %s"), argv[1]); | |
2441 | ||
2442 | addr = parse_and_eval_address (argv[1]); | |
2443 | ||
2444 | ALL_OBJFILES (objf) | |
2445 | { | |
d03de421 PA |
2446 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2447 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2448 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2449 | break; | |
2450 | } | |
2451 | } | |
2452 | else if (argv[0] != NULL) | |
2453 | { | |
2454 | /* Interpret the current argument as a file name. */ | |
2455 | char *filename; | |
2456 | ||
2457 | if (argv[1] != NULL) | |
2458 | error (_("Junk after %s"), argv[0]); | |
2459 | ||
2460 | filename = tilde_expand (argv[0]); | |
2461 | make_cleanup (xfree, filename); | |
2462 | ||
2463 | ALL_OBJFILES (objf) | |
2464 | { | |
d03de421 PA |
2465 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2466 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2467 | && objf->pspace == pspace |
2468 | && filename_cmp (filename, objfile_name (objf)) == 0) | |
2469 | break; | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | if (objf == NULL) | |
2474 | error (_("No symbol file found")); | |
2475 | ||
2476 | if (from_tty | |
2477 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2478 | objfile_name (objf))) | |
2479 | error (_("Not confirmed.")); | |
2480 | ||
2481 | free_objfile (objf); | |
2482 | clear_symtab_users (0); | |
2483 | ||
2484 | do_cleanups (my_cleanups); | |
2485 | } | |
2486 | ||
4ac39b97 JK |
2487 | typedef struct objfile *objfilep; |
2488 | ||
2489 | DEF_VEC_P (objfilep); | |
2490 | ||
c906108c | 2491 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2492 | |
c906108c | 2493 | void |
fba45db2 | 2494 | reread_symbols (void) |
c906108c SS |
2495 | { |
2496 | struct objfile *objfile; | |
2497 | long new_modtime; | |
c906108c SS |
2498 | struct stat new_statbuf; |
2499 | int res; | |
4ac39b97 JK |
2500 | VEC (objfilep) *new_objfiles = NULL; |
2501 | struct cleanup *all_cleanups; | |
2502 | ||
2503 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2504 | |
2505 | /* With the addition of shared libraries, this should be modified, | |
2506 | the load time should be saved in the partial symbol tables, since | |
2507 | different tables may come from different source files. FIXME. | |
2508 | This routine should then walk down each partial symbol table | |
c378eb4e | 2509 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2510 | |
c5aa993b JM |
2511 | for (objfile = object_files; objfile; objfile = objfile->next) |
2512 | { | |
9cce227f TG |
2513 | if (objfile->obfd == NULL) |
2514 | continue; | |
2515 | ||
2516 | /* Separate debug objfiles are handled in the main objfile. */ | |
2517 | if (objfile->separate_debug_objfile_backlink) | |
2518 | continue; | |
2519 | ||
02aeec7b JB |
2520 | /* If this object is from an archive (what you usually create with |
2521 | `ar', often called a `static library' on most systems, though | |
2522 | a `shared library' on AIX is also an archive), then you should | |
2523 | stat on the archive name, not member name. */ | |
9cce227f TG |
2524 | if (objfile->obfd->my_archive) |
2525 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2526 | else | |
4262abfb | 2527 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2528 | if (res != 0) |
2529 | { | |
c378eb4e | 2530 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2531 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2532 | objfile_name (objfile)); |
9cce227f TG |
2533 | continue; |
2534 | } | |
2535 | new_modtime = new_statbuf.st_mtime; | |
2536 | if (new_modtime != objfile->mtime) | |
2537 | { | |
2538 | struct cleanup *old_cleanups; | |
2539 | struct section_offsets *offsets; | |
2540 | int num_offsets; | |
24ba069a | 2541 | char *original_name; |
9cce227f TG |
2542 | |
2543 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2544 | objfile_name (objfile)); |
9cce227f TG |
2545 | |
2546 | /* There are various functions like symbol_file_add, | |
2547 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2548 | appear to do what we want. But they have various other | |
2549 | effects which we *don't* want. So we just do stuff | |
2550 | ourselves. We don't worry about mapped files (for one thing, | |
2551 | any mapped file will be out of date). */ | |
2552 | ||
2553 | /* If we get an error, blow away this objfile (not sure if | |
2554 | that is the correct response for things like shared | |
2555 | libraries). */ | |
2556 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2557 | /* We need to do this whenever any symbols go away. */ | |
2558 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2559 | ||
0ba1096a KT |
2560 | if (exec_bfd != NULL |
2561 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2562 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2563 | { |
2564 | /* Reload EXEC_BFD without asking anything. */ | |
2565 | ||
2566 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2567 | } | |
2568 | ||
f6eeced0 JK |
2569 | /* Keep the calls order approx. the same as in free_objfile. */ |
2570 | ||
2571 | /* Free the separate debug objfiles. It will be | |
2572 | automatically recreated by sym_read. */ | |
2573 | free_objfile_separate_debug (objfile); | |
2574 | ||
2575 | /* Remove any references to this objfile in the global | |
2576 | value lists. */ | |
2577 | preserve_values (objfile); | |
2578 | ||
2579 | /* Nuke all the state that we will re-read. Much of the following | |
2580 | code which sets things to NULL really is necessary to tell | |
2581 | other parts of GDB that there is nothing currently there. | |
2582 | ||
2583 | Try to keep the freeing order compatible with free_objfile. */ | |
2584 | ||
2585 | if (objfile->sf != NULL) | |
2586 | { | |
2587 | (*objfile->sf->sym_finish) (objfile); | |
2588 | } | |
2589 | ||
2590 | clear_objfile_data (objfile); | |
2591 | ||
e1507e95 | 2592 | /* Clean up any state BFD has sitting around. */ |
a4453b7e TT |
2593 | { |
2594 | struct bfd *obfd = objfile->obfd; | |
d3846e71 | 2595 | char *obfd_filename; |
a4453b7e TT |
2596 | |
2597 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2598 | /* Open the new BFD before freeing the old one, so that | |
2599 | the filename remains live. */ | |
08d2cd74 | 2600 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
e1507e95 TT |
2601 | if (objfile->obfd == NULL) |
2602 | { | |
2603 | /* We have to make a cleanup and error here, rather | |
2604 | than erroring later, because once we unref OBFD, | |
2605 | OBFD_FILENAME will be freed. */ | |
2606 | make_cleanup_bfd_unref (obfd); | |
2607 | error (_("Can't open %s to read symbols."), obfd_filename); | |
2608 | } | |
a4453b7e TT |
2609 | gdb_bfd_unref (obfd); |
2610 | } | |
2611 | ||
24ba069a JK |
2612 | original_name = xstrdup (objfile->original_name); |
2613 | make_cleanup (xfree, original_name); | |
2614 | ||
9cce227f TG |
2615 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2616 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2617 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2618 | bfd_errmsg (bfd_get_error ())); |
2619 | ||
2620 | /* Save the offsets, we will nuke them with the rest of the | |
2621 | objfile_obstack. */ | |
2622 | num_offsets = objfile->num_sections; | |
2623 | offsets = ((struct section_offsets *) | |
2624 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2625 | memcpy (offsets, objfile->section_offsets, | |
2626 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2627 | ||
9cce227f TG |
2628 | /* FIXME: Do we have to free a whole linked list, or is this |
2629 | enough? */ | |
2630 | if (objfile->global_psymbols.list) | |
2631 | xfree (objfile->global_psymbols.list); | |
2632 | memset (&objfile->global_psymbols, 0, | |
2633 | sizeof (objfile->global_psymbols)); | |
2634 | if (objfile->static_psymbols.list) | |
2635 | xfree (objfile->static_psymbols.list); | |
2636 | memset (&objfile->static_psymbols, 0, | |
2637 | sizeof (objfile->static_psymbols)); | |
2638 | ||
c378eb4e | 2639 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2640 | psymbol_bcache_free (objfile->psymbol_cache); |
2641 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f TG |
2642 | obstack_free (&objfile->objfile_obstack, 0); |
2643 | objfile->sections = NULL; | |
2644 | objfile->symtabs = NULL; | |
2645 | objfile->psymtabs = NULL; | |
2646 | objfile->psymtabs_addrmap = NULL; | |
2647 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2648 | objfile->template_symbols = NULL; |
9cce227f | 2649 | |
9cce227f TG |
2650 | /* obstack_init also initializes the obstack so it is |
2651 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2652 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2653 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2654 | |
846060df JB |
2655 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2656 | data on the objfile's obstack (if sharing data across | |
2657 | multiple users is not possible), so it's important to | |
2658 | do it *after* the obstack has been initialized. */ | |
2659 | set_objfile_per_bfd (objfile); | |
2660 | ||
24ba069a JK |
2661 | objfile->original_name = obstack_copy0 (&objfile->objfile_obstack, |
2662 | original_name, | |
2663 | strlen (original_name)); | |
2664 | ||
779bd270 DE |
2665 | /* Reset the sym_fns pointer. The ELF reader can change it |
2666 | based on whether .gdb_index is present, and we need it to | |
2667 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2668 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2669 | |
d82ea6a8 | 2670 | build_objfile_section_table (objfile); |
9cce227f TG |
2671 | terminate_minimal_symbol_table (objfile); |
2672 | ||
2673 | /* We use the same section offsets as from last time. I'm not | |
2674 | sure whether that is always correct for shared libraries. */ | |
2675 | objfile->section_offsets = (struct section_offsets *) | |
2676 | obstack_alloc (&objfile->objfile_obstack, | |
2677 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2678 | memcpy (objfile->section_offsets, offsets, | |
2679 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2680 | objfile->num_sections = num_offsets; | |
2681 | ||
2682 | /* What the hell is sym_new_init for, anyway? The concept of | |
2683 | distinguishing between the main file and additional files | |
2684 | in this way seems rather dubious. */ | |
2685 | if (objfile == symfile_objfile) | |
c906108c | 2686 | { |
9cce227f | 2687 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2688 | } |
9cce227f TG |
2689 | |
2690 | (*objfile->sf->sym_init) (objfile); | |
2691 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2692 | |
2693 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2694 | read_symbols (objfile, 0); | |
b11896a5 | 2695 | |
9cce227f | 2696 | if (!objfile_has_symbols (objfile)) |
c906108c | 2697 | { |
9cce227f TG |
2698 | wrap_here (""); |
2699 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2700 | wrap_here (""); | |
c5aa993b | 2701 | } |
9cce227f TG |
2702 | |
2703 | /* We're done reading the symbol file; finish off complaints. */ | |
2704 | clear_complaints (&symfile_complaints, 0, 1); | |
2705 | ||
2706 | /* Getting new symbols may change our opinion about what is | |
2707 | frameless. */ | |
2708 | ||
2709 | reinit_frame_cache (); | |
2710 | ||
2711 | /* Discard cleanups as symbol reading was successful. */ | |
2712 | discard_cleanups (old_cleanups); | |
2713 | ||
2714 | /* If the mtime has changed between the time we set new_modtime | |
2715 | and now, we *want* this to be out of date, so don't call stat | |
2716 | again now. */ | |
2717 | objfile->mtime = new_modtime; | |
9cce227f | 2718 | init_entry_point_info (objfile); |
4ac39b97 JK |
2719 | |
2720 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2721 | } |
2722 | } | |
c906108c | 2723 | |
4ac39b97 | 2724 | if (new_objfiles) |
ea53e89f | 2725 | { |
4ac39b97 JK |
2726 | int ix; |
2727 | ||
ff3536bc UW |
2728 | /* Notify objfiles that we've modified objfile sections. */ |
2729 | objfiles_changed (); | |
2730 | ||
c1e56572 | 2731 | clear_symtab_users (0); |
4ac39b97 JK |
2732 | |
2733 | /* clear_objfile_data for each objfile was called before freeing it and | |
2734 | observer_notify_new_objfile (NULL) has been called by | |
2735 | clear_symtab_users above. Notify the new files now. */ | |
2736 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2737 | observer_notify_new_objfile (objfile); | |
2738 | ||
ea53e89f JB |
2739 | /* At least one objfile has changed, so we can consider that |
2740 | the executable we're debugging has changed too. */ | |
781b42b0 | 2741 | observer_notify_executable_changed (); |
ea53e89f | 2742 | } |
4ac39b97 JK |
2743 | |
2744 | do_cleanups (all_cleanups); | |
c906108c | 2745 | } |
c906108c SS |
2746 | \f |
2747 | ||
c5aa993b JM |
2748 | typedef struct |
2749 | { | |
2750 | char *ext; | |
c906108c | 2751 | enum language lang; |
c5aa993b JM |
2752 | } |
2753 | filename_language; | |
c906108c | 2754 | |
c5aa993b | 2755 | static filename_language *filename_language_table; |
c906108c SS |
2756 | static int fl_table_size, fl_table_next; |
2757 | ||
2758 | static void | |
fba45db2 | 2759 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2760 | { |
2761 | if (fl_table_next >= fl_table_size) | |
2762 | { | |
2763 | fl_table_size += 10; | |
5417f6dc | 2764 | filename_language_table = |
25bf3106 PM |
2765 | xrealloc (filename_language_table, |
2766 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2767 | } |
2768 | ||
4fcf66da | 2769 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2770 | filename_language_table[fl_table_next].lang = lang; |
2771 | fl_table_next++; | |
2772 | } | |
2773 | ||
2774 | static char *ext_args; | |
920d2a44 AC |
2775 | static void |
2776 | show_ext_args (struct ui_file *file, int from_tty, | |
2777 | struct cmd_list_element *c, const char *value) | |
2778 | { | |
3e43a32a MS |
2779 | fprintf_filtered (file, |
2780 | _("Mapping between filename extension " | |
2781 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2782 | value); |
2783 | } | |
c906108c SS |
2784 | |
2785 | static void | |
26c41df3 | 2786 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2787 | { |
2788 | int i; | |
2789 | char *cp = ext_args; | |
2790 | enum language lang; | |
2791 | ||
c378eb4e | 2792 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2793 | if (*cp != '.') |
8a3fe4f8 | 2794 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2795 | |
2796 | /* Find end of first arg. */ | |
c5aa993b | 2797 | while (*cp && !isspace (*cp)) |
c906108c SS |
2798 | cp++; |
2799 | ||
2800 | if (*cp == '\0') | |
3e43a32a MS |
2801 | error (_("'%s': two arguments required -- " |
2802 | "filename extension and language"), | |
c906108c SS |
2803 | ext_args); |
2804 | ||
c378eb4e | 2805 | /* Null-terminate first arg. */ |
c5aa993b | 2806 | *cp++ = '\0'; |
c906108c SS |
2807 | |
2808 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2809 | cp = skip_spaces (cp); |
c906108c SS |
2810 | |
2811 | if (*cp == '\0') | |
3e43a32a MS |
2812 | error (_("'%s': two arguments required -- " |
2813 | "filename extension and language"), | |
c906108c SS |
2814 | ext_args); |
2815 | ||
2816 | /* Lookup the language from among those we know. */ | |
2817 | lang = language_enum (cp); | |
2818 | ||
2819 | /* Now lookup the filename extension: do we already know it? */ | |
2820 | for (i = 0; i < fl_table_next; i++) | |
2821 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2822 | break; | |
2823 | ||
2824 | if (i >= fl_table_next) | |
2825 | { | |
c378eb4e | 2826 | /* New file extension. */ |
c906108c SS |
2827 | add_filename_language (ext_args, lang); |
2828 | } | |
2829 | else | |
2830 | { | |
c378eb4e | 2831 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2832 | |
2833 | /* if (from_tty) */ | |
2834 | /* query ("Really make files of type %s '%s'?", */ | |
2835 | /* ext_args, language_str (lang)); */ | |
2836 | ||
b8c9b27d | 2837 | xfree (filename_language_table[i].ext); |
4fcf66da | 2838 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2839 | filename_language_table[i].lang = lang; |
2840 | } | |
2841 | } | |
2842 | ||
2843 | static void | |
fba45db2 | 2844 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2845 | { |
2846 | int i; | |
2847 | ||
a3f17187 | 2848 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2849 | printf_filtered ("\n\n"); |
2850 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2851 | printf_filtered ("\t%s\t- %s\n", |
2852 | filename_language_table[i].ext, | |
c906108c SS |
2853 | language_str (filename_language_table[i].lang)); |
2854 | } | |
2855 | ||
2856 | static void | |
fba45db2 | 2857 | init_filename_language_table (void) |
c906108c | 2858 | { |
c378eb4e | 2859 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2860 | { |
2861 | fl_table_size = 20; | |
2862 | fl_table_next = 0; | |
c5aa993b | 2863 | filename_language_table = |
c906108c | 2864 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2865 | add_filename_language (".c", language_c); |
6aecb9c2 | 2866 | add_filename_language (".d", language_d); |
c5aa993b JM |
2867 | add_filename_language (".C", language_cplus); |
2868 | add_filename_language (".cc", language_cplus); | |
2869 | add_filename_language (".cp", language_cplus); | |
2870 | add_filename_language (".cpp", language_cplus); | |
2871 | add_filename_language (".cxx", language_cplus); | |
2872 | add_filename_language (".c++", language_cplus); | |
2873 | add_filename_language (".java", language_java); | |
c906108c | 2874 | add_filename_language (".class", language_java); |
da2cf7e0 | 2875 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2876 | add_filename_language (".f", language_fortran); |
2877 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2878 | add_filename_language (".for", language_fortran); |
2879 | add_filename_language (".FOR", language_fortran); | |
2880 | add_filename_language (".ftn", language_fortran); | |
2881 | add_filename_language (".FTN", language_fortran); | |
2882 | add_filename_language (".fpp", language_fortran); | |
2883 | add_filename_language (".FPP", language_fortran); | |
2884 | add_filename_language (".f90", language_fortran); | |
2885 | add_filename_language (".F90", language_fortran); | |
2886 | add_filename_language (".f95", language_fortran); | |
2887 | add_filename_language (".F95", language_fortran); | |
2888 | add_filename_language (".f03", language_fortran); | |
2889 | add_filename_language (".F03", language_fortran); | |
2890 | add_filename_language (".f08", language_fortran); | |
2891 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2892 | add_filename_language (".s", language_asm); |
aa707ed0 | 2893 | add_filename_language (".sx", language_asm); |
c5aa993b | 2894 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2895 | add_filename_language (".pas", language_pascal); |
2896 | add_filename_language (".p", language_pascal); | |
2897 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2898 | add_filename_language (".adb", language_ada); |
2899 | add_filename_language (".ads", language_ada); | |
2900 | add_filename_language (".a", language_ada); | |
2901 | add_filename_language (".ada", language_ada); | |
dde59185 | 2902 | add_filename_language (".dg", language_ada); |
c906108c SS |
2903 | } |
2904 | } | |
2905 | ||
2906 | enum language | |
dd786858 | 2907 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2908 | { |
2909 | int i; | |
2910 | char *cp; | |
2911 | ||
2912 | if (filename != NULL) | |
2913 | if ((cp = strrchr (filename, '.')) != NULL) | |
2914 | for (i = 0; i < fl_table_next; i++) | |
2915 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2916 | return filename_language_table[i].lang; | |
2917 | ||
2918 | return language_unknown; | |
2919 | } | |
2920 | \f | |
2921 | /* allocate_symtab: | |
2922 | ||
2923 | Allocate and partly initialize a new symbol table. Return a pointer | |
2924 | to it. error() if no space. | |
2925 | ||
2926 | Caller must set these fields: | |
c5aa993b JM |
2927 | LINETABLE(symtab) |
2928 | symtab->blockvector | |
2929 | symtab->dirname | |
2930 | symtab->free_code | |
2931 | symtab->free_ptr | |
c906108c SS |
2932 | */ |
2933 | ||
2934 | struct symtab * | |
72b9f47f | 2935 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2936 | { |
52f0bd74 | 2937 | struct symtab *symtab; |
c906108c SS |
2938 | |
2939 | symtab = (struct symtab *) | |
4a146b47 | 2940 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2941 | memset (symtab, 0, sizeof (*symtab)); |
21ea9eec TT |
2942 | symtab->filename = bcache (filename, strlen (filename) + 1, |
2943 | objfile->per_bfd->filename_cache); | |
c5aa993b JM |
2944 | symtab->fullname = NULL; |
2945 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2946 | symtab->debugformat = "unknown"; |
c906108c | 2947 | |
c378eb4e | 2948 | /* Hook it to the objfile it comes from. */ |
c906108c | 2949 | |
c5aa993b JM |
2950 | symtab->objfile = objfile; |
2951 | symtab->next = objfile->symtabs; | |
2952 | objfile->symtabs = symtab; | |
c906108c | 2953 | |
db0fec5c DE |
2954 | /* This can be very verbose with lots of headers. |
2955 | Only print at higher debug levels. */ | |
2956 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2957 | { |
2958 | /* Be a bit clever with debugging messages, and don't print objfile | |
2959 | every time, only when it changes. */ | |
2960 | static char *last_objfile_name = NULL; | |
2961 | ||
2962 | if (last_objfile_name == NULL | |
4262abfb | 2963 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2964 | { |
2965 | xfree (last_objfile_name); | |
4262abfb | 2966 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2967 | fprintf_unfiltered (gdb_stdlog, |
2968 | "Creating one or more symtabs for objfile %s ...\n", | |
2969 | last_objfile_name); | |
2970 | } | |
2971 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2972 | "Created symtab %s for module %s.\n", |
2973 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2974 | } |
2975 | ||
c906108c SS |
2976 | return (symtab); |
2977 | } | |
c906108c | 2978 | \f |
c5aa993b | 2979 | |
c906108c | 2980 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2981 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2982 | |
2983 | void | |
c1e56572 | 2984 | clear_symtab_users (int add_flags) |
c906108c SS |
2985 | { |
2986 | /* Someday, we should do better than this, by only blowing away | |
2987 | the things that really need to be blown. */ | |
c0501be5 DJ |
2988 | |
2989 | /* Clear the "current" symtab first, because it is no longer valid. | |
2990 | breakpoint_re_set may try to access the current symtab. */ | |
2991 | clear_current_source_symtab_and_line (); | |
2992 | ||
c906108c | 2993 | clear_displays (); |
c1e56572 JK |
2994 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2995 | breakpoint_re_set (); | |
1bfeeb0f | 2996 | clear_last_displayed_sal (); |
c906108c | 2997 | clear_pc_function_cache (); |
06d3b283 | 2998 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2999 | |
3000 | /* Clear globals which might have pointed into a removed objfile. | |
3001 | FIXME: It's not clear which of these are supposed to persist | |
3002 | between expressions and which ought to be reset each time. */ | |
3003 | expression_context_block = NULL; | |
3004 | innermost_block = NULL; | |
8756216b DP |
3005 | |
3006 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
3007 | varobj_invalidate (); | |
3008 | ||
c906108c SS |
3009 | } |
3010 | ||
74b7792f AC |
3011 | static void |
3012 | clear_symtab_users_cleanup (void *ignore) | |
3013 | { | |
c1e56572 | 3014 | clear_symtab_users (0); |
74b7792f | 3015 | } |
c906108c | 3016 | \f |
c906108c SS |
3017 | /* OVERLAYS: |
3018 | The following code implements an abstraction for debugging overlay sections. | |
3019 | ||
3020 | The target model is as follows: | |
3021 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3022 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3023 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3024 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3025 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3026 | sections should be considered to be mapped from the VMA to the LMA. |
3027 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3028 | For instance, if a section has been mapped then its contents |
c5aa993b | 3029 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3030 | |
3031 | Two levels of debugger support for overlays are available. One is | |
3032 | "manual", in which the debugger relies on the user to tell it which | |
3033 | overlays are currently mapped. This level of support is | |
3034 | implemented entirely in the core debugger, and the information about | |
3035 | whether a section is mapped is kept in the objfile->obj_section table. | |
3036 | ||
3037 | The second level of support is "automatic", and is only available if | |
3038 | the target-specific code provides functionality to read the target's | |
3039 | overlay mapping table, and translate its contents for the debugger | |
3040 | (by updating the mapped state information in the obj_section tables). | |
3041 | ||
3042 | The interface is as follows: | |
c5aa993b JM |
3043 | User commands: |
3044 | overlay map <name> -- tell gdb to consider this section mapped | |
3045 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3046 | overlay list -- list the sections that GDB thinks are mapped | |
3047 | overlay read-target -- get the target's state of what's mapped | |
3048 | overlay off/manual/auto -- set overlay debugging state | |
3049 | Functional interface: | |
3050 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3051 | section, return that section. | |
5417f6dc | 3052 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 3053 | the pc, either in its VMA or its LMA |
714835d5 | 3054 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
3055 | section_is_overlay(sect): true if section's VMA != LMA |
3056 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3057 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3058 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3059 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3060 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3061 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3062 | either in VMA or LMA depending on whether | |
c378eb4e | 3063 | the symbol's section is currently mapped. */ |
c906108c SS |
3064 | |
3065 | /* Overlay debugging state: */ | |
3066 | ||
d874f1e2 | 3067 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 3068 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 3069 | |
c906108c | 3070 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3071 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3072 | SECTION is loaded at an address different from where it will "run". */ |
3073 | ||
3074 | int | |
714835d5 | 3075 | section_is_overlay (struct obj_section *section) |
c906108c | 3076 | { |
714835d5 UW |
3077 | if (overlay_debugging && section) |
3078 | { | |
3079 | bfd *abfd = section->objfile->obfd; | |
3080 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 3081 | |
714835d5 UW |
3082 | if (bfd_section_lma (abfd, bfd_section) != 0 |
3083 | && bfd_section_lma (abfd, bfd_section) | |
3084 | != bfd_section_vma (abfd, bfd_section)) | |
3085 | return 1; | |
3086 | } | |
c906108c SS |
3087 | |
3088 | return 0; | |
3089 | } | |
3090 | ||
3091 | /* Function: overlay_invalidate_all (void) | |
3092 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3093 | ||
3094 | static void | |
fba45db2 | 3095 | overlay_invalidate_all (void) |
c906108c | 3096 | { |
c5aa993b | 3097 | struct objfile *objfile; |
c906108c SS |
3098 | struct obj_section *sect; |
3099 | ||
3100 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3101 | if (section_is_overlay (sect)) |
3102 | sect->ovly_mapped = -1; | |
c906108c SS |
3103 | } |
3104 | ||
714835d5 | 3105 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3106 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3107 | |
3108 | Access to the ovly_mapped flag is restricted to this function, so | |
3109 | that we can do automatic update. If the global flag | |
3110 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3111 | overlay_invalidate_all. If the mapped state of the particular | |
3112 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3113 | ||
714835d5 UW |
3114 | int |
3115 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3116 | { |
9216df95 UW |
3117 | struct gdbarch *gdbarch; |
3118 | ||
714835d5 | 3119 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3120 | return 0; |
3121 | ||
c5aa993b | 3122 | switch (overlay_debugging) |
c906108c SS |
3123 | { |
3124 | default: | |
d874f1e2 | 3125 | case ovly_off: |
c5aa993b | 3126 | return 0; /* overlay debugging off */ |
d874f1e2 | 3127 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3128 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3129 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3130 | gdbarch = get_objfile_arch (osect->objfile); |
3131 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3132 | { |
3133 | if (overlay_cache_invalid) | |
3134 | { | |
3135 | overlay_invalidate_all (); | |
3136 | overlay_cache_invalid = 0; | |
3137 | } | |
3138 | if (osect->ovly_mapped == -1) | |
9216df95 | 3139 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3140 | } |
3141 | /* fall thru to manual case */ | |
d874f1e2 | 3142 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3143 | return osect->ovly_mapped == 1; |
3144 | } | |
3145 | } | |
3146 | ||
c906108c SS |
3147 | /* Function: pc_in_unmapped_range |
3148 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3149 | ||
3150 | CORE_ADDR | |
714835d5 | 3151 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3152 | { |
714835d5 UW |
3153 | if (section_is_overlay (section)) |
3154 | { | |
3155 | bfd *abfd = section->objfile->obfd; | |
3156 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3157 | |
714835d5 UW |
3158 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3159 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3160 | CORE_ADDR offset = obj_section_offset (section); | |
3161 | ||
3162 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3163 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3164 | return 1; | |
3165 | } | |
c906108c | 3166 | |
c906108c SS |
3167 | return 0; |
3168 | } | |
3169 | ||
3170 | /* Function: pc_in_mapped_range | |
3171 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3172 | ||
3173 | CORE_ADDR | |
714835d5 | 3174 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3175 | { |
714835d5 UW |
3176 | if (section_is_overlay (section)) |
3177 | { | |
3178 | if (obj_section_addr (section) <= pc | |
3179 | && pc < obj_section_endaddr (section)) | |
3180 | return 1; | |
3181 | } | |
c906108c | 3182 | |
c906108c SS |
3183 | return 0; |
3184 | } | |
3185 | ||
9ec8e6a0 JB |
3186 | /* Return true if the mapped ranges of sections A and B overlap, false |
3187 | otherwise. */ | |
3b7bacac | 3188 | |
b9362cc7 | 3189 | static int |
714835d5 | 3190 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3191 | { |
714835d5 UW |
3192 | CORE_ADDR a_start = obj_section_addr (a); |
3193 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3194 | CORE_ADDR b_start = obj_section_addr (b); | |
3195 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3196 | |
3197 | return (a_start < b_end && b_start < a_end); | |
3198 | } | |
3199 | ||
c906108c SS |
3200 | /* Function: overlay_unmapped_address (PC, SECTION) |
3201 | Returns the address corresponding to PC in the unmapped (load) range. | |
3202 | May be the same as PC. */ | |
3203 | ||
3204 | CORE_ADDR | |
714835d5 | 3205 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3206 | { |
714835d5 UW |
3207 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3208 | { | |
3209 | bfd *abfd = section->objfile->obfd; | |
3210 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3211 | |
714835d5 UW |
3212 | return pc + bfd_section_lma (abfd, bfd_section) |
3213 | - bfd_section_vma (abfd, bfd_section); | |
3214 | } | |
c906108c SS |
3215 | |
3216 | return pc; | |
3217 | } | |
3218 | ||
3219 | /* Function: overlay_mapped_address (PC, SECTION) | |
3220 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3221 | May be the same as PC. */ | |
3222 | ||
3223 | CORE_ADDR | |
714835d5 | 3224 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3225 | { |
714835d5 UW |
3226 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3227 | { | |
3228 | bfd *abfd = section->objfile->obfd; | |
3229 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3230 | |
714835d5 UW |
3231 | return pc + bfd_section_vma (abfd, bfd_section) |
3232 | - bfd_section_lma (abfd, bfd_section); | |
3233 | } | |
c906108c SS |
3234 | |
3235 | return pc; | |
3236 | } | |
3237 | ||
5417f6dc | 3238 | /* Function: symbol_overlayed_address |
c906108c SS |
3239 | Return one of two addresses (relative to the VMA or to the LMA), |
3240 | depending on whether the section is mapped or not. */ | |
3241 | ||
c5aa993b | 3242 | CORE_ADDR |
714835d5 | 3243 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3244 | { |
3245 | if (overlay_debugging) | |
3246 | { | |
c378eb4e | 3247 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3248 | if (section == 0) |
3249 | return address; | |
c378eb4e MS |
3250 | /* If the symbol's section is not an overlay, just return its |
3251 | address. */ | |
c906108c SS |
3252 | if (!section_is_overlay (section)) |
3253 | return address; | |
c378eb4e | 3254 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3255 | if (section_is_mapped (section)) |
3256 | return address; | |
3257 | /* | |
3258 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3259 | * then return its LOADED address rather than its vma address!! | |
3260 | */ | |
3261 | return overlay_unmapped_address (address, section); | |
3262 | } | |
3263 | return address; | |
3264 | } | |
3265 | ||
5417f6dc | 3266 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3267 | Return the best-match overlay section for PC: |
3268 | If PC matches a mapped overlay section's VMA, return that section. | |
3269 | Else if PC matches an unmapped section's VMA, return that section. | |
3270 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3271 | ||
714835d5 | 3272 | struct obj_section * |
fba45db2 | 3273 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3274 | { |
c5aa993b | 3275 | struct objfile *objfile; |
c906108c SS |
3276 | struct obj_section *osect, *best_match = NULL; |
3277 | ||
3278 | if (overlay_debugging) | |
3279 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3280 | if (section_is_overlay (osect)) |
c5aa993b | 3281 | { |
714835d5 | 3282 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3283 | { |
714835d5 UW |
3284 | if (section_is_mapped (osect)) |
3285 | return osect; | |
c5aa993b JM |
3286 | else |
3287 | best_match = osect; | |
3288 | } | |
714835d5 | 3289 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3290 | best_match = osect; |
3291 | } | |
714835d5 | 3292 | return best_match; |
c906108c SS |
3293 | } |
3294 | ||
3295 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3296 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3297 | currently marked as MAPPED, return that section. Else return NULL. */ |
3298 | ||
714835d5 | 3299 | struct obj_section * |
fba45db2 | 3300 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3301 | { |
c5aa993b | 3302 | struct objfile *objfile; |
c906108c SS |
3303 | struct obj_section *osect; |
3304 | ||
3305 | if (overlay_debugging) | |
3306 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3307 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3308 | return osect; | |
c906108c SS |
3309 | |
3310 | return NULL; | |
3311 | } | |
3312 | ||
3313 | /* Function: list_overlays_command | |
c378eb4e | 3314 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3315 | |
5d3055ad | 3316 | static void |
fba45db2 | 3317 | list_overlays_command (char *args, int from_tty) |
c906108c | 3318 | { |
c5aa993b JM |
3319 | int nmapped = 0; |
3320 | struct objfile *objfile; | |
c906108c SS |
3321 | struct obj_section *osect; |
3322 | ||
3323 | if (overlay_debugging) | |
3324 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3325 | if (section_is_mapped (osect)) |
c5aa993b | 3326 | { |
5af949e3 | 3327 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3328 | const char *name; |
3329 | bfd_vma lma, vma; | |
3330 | int size; | |
3331 | ||
3332 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3333 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3334 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3335 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3336 | ||
3337 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3338 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3339 | puts_filtered (" - "); |
5af949e3 | 3340 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3341 | printf_filtered (", mapped at "); |
5af949e3 | 3342 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3343 | puts_filtered (" - "); |
5af949e3 | 3344 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3345 | puts_filtered ("\n"); |
3346 | ||
3347 | nmapped++; | |
3348 | } | |
c906108c | 3349 | if (nmapped == 0) |
a3f17187 | 3350 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3351 | } |
3352 | ||
3353 | /* Function: map_overlay_command | |
3354 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3355 | ||
5d3055ad | 3356 | static void |
fba45db2 | 3357 | map_overlay_command (char *args, int from_tty) |
c906108c | 3358 | { |
c5aa993b JM |
3359 | struct objfile *objfile, *objfile2; |
3360 | struct obj_section *sec, *sec2; | |
c906108c SS |
3361 | |
3362 | if (!overlay_debugging) | |
3e43a32a MS |
3363 | error (_("Overlay debugging not enabled. Use " |
3364 | "either the 'overlay auto' or\n" | |
3365 | "the 'overlay manual' command.")); | |
c906108c SS |
3366 | |
3367 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3368 | error (_("Argument required: name of an overlay section")); |
c906108c | 3369 | |
c378eb4e | 3370 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3371 | ALL_OBJSECTIONS (objfile, sec) |
3372 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3373 | { |
c378eb4e | 3374 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3375 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3376 | continue; /* not an overlay section */ |
3377 | ||
c378eb4e | 3378 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3379 | sec->ovly_mapped = 1; |
3380 | ||
3381 | /* Next, make a pass and unmap any sections that are | |
3382 | overlapped by this new section: */ | |
3383 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3384 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3385 | { |
3386 | if (info_verbose) | |
a3f17187 | 3387 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3388 | bfd_section_name (objfile->obfd, |
3389 | sec2->the_bfd_section)); | |
c378eb4e | 3390 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3391 | } |
3392 | return; | |
3393 | } | |
8a3fe4f8 | 3394 | error (_("No overlay section called %s"), args); |
c906108c SS |
3395 | } |
3396 | ||
3397 | /* Function: unmap_overlay_command | |
5417f6dc | 3398 | Mark the overlay section as unmapped |
c906108c SS |
3399 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3400 | ||
5d3055ad | 3401 | static void |
fba45db2 | 3402 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3403 | { |
c5aa993b | 3404 | struct objfile *objfile; |
c906108c SS |
3405 | struct obj_section *sec; |
3406 | ||
3407 | if (!overlay_debugging) | |
3e43a32a MS |
3408 | error (_("Overlay debugging not enabled. " |
3409 | "Use either the 'overlay auto' or\n" | |
3410 | "the 'overlay manual' command.")); | |
c906108c SS |
3411 | |
3412 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3413 | error (_("Argument required: name of an overlay section")); |
c906108c | 3414 | |
c378eb4e | 3415 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3416 | ALL_OBJSECTIONS (objfile, sec) |
3417 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3418 | { |
3419 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3420 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3421 | sec->ovly_mapped = 0; |
3422 | return; | |
3423 | } | |
8a3fe4f8 | 3424 | error (_("No overlay section called %s"), args); |
c906108c SS |
3425 | } |
3426 | ||
3427 | /* Function: overlay_auto_command | |
3428 | A utility command to turn on overlay debugging. | |
c378eb4e | 3429 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3430 | |
3431 | static void | |
fba45db2 | 3432 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3433 | { |
d874f1e2 | 3434 | overlay_debugging = ovly_auto; |
1900040c | 3435 | enable_overlay_breakpoints (); |
c906108c | 3436 | if (info_verbose) |
a3f17187 | 3437 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3438 | } |
3439 | ||
3440 | /* Function: overlay_manual_command | |
3441 | A utility command to turn on overlay debugging. | |
c378eb4e | 3442 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3443 | |
3444 | static void | |
fba45db2 | 3445 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3446 | { |
d874f1e2 | 3447 | overlay_debugging = ovly_on; |
1900040c | 3448 | disable_overlay_breakpoints (); |
c906108c | 3449 | if (info_verbose) |
a3f17187 | 3450 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3451 | } |
3452 | ||
3453 | /* Function: overlay_off_command | |
3454 | A utility command to turn on overlay debugging. | |
c378eb4e | 3455 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3456 | |
3457 | static void | |
fba45db2 | 3458 | overlay_off_command (char *args, int from_tty) |
c906108c | 3459 | { |
d874f1e2 | 3460 | overlay_debugging = ovly_off; |
1900040c | 3461 | disable_overlay_breakpoints (); |
c906108c | 3462 | if (info_verbose) |
a3f17187 | 3463 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3464 | } |
3465 | ||
3466 | static void | |
fba45db2 | 3467 | overlay_load_command (char *args, int from_tty) |
c906108c | 3468 | { |
e17c207e UW |
3469 | struct gdbarch *gdbarch = get_current_arch (); |
3470 | ||
3471 | if (gdbarch_overlay_update_p (gdbarch)) | |
3472 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3473 | else |
8a3fe4f8 | 3474 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3475 | } |
3476 | ||
3477 | /* Function: overlay_command | |
c378eb4e | 3478 | A place-holder for a mis-typed command. */ |
c906108c | 3479 | |
c378eb4e | 3480 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3481 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3482 | |
3483 | static void | |
fba45db2 | 3484 | overlay_command (char *args, int from_tty) |
c906108c | 3485 | { |
c5aa993b | 3486 | printf_unfiltered |
c906108c | 3487 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3488 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3489 | } |
3490 | ||
c906108c SS |
3491 | /* Target Overlays for the "Simplest" overlay manager: |
3492 | ||
5417f6dc RM |
3493 | This is GDB's default target overlay layer. It works with the |
3494 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3495 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3496 | so targets that use a different runtime overlay manager can |
c906108c SS |
3497 | substitute their own overlay_update function and take over the |
3498 | function pointer. | |
3499 | ||
3500 | The overlay_update function pokes around in the target's data structures | |
3501 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3502 | this information. | |
3503 | ||
3504 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3505 | unsigned _novlys; /# number of overlay sections #/ |
3506 | unsigned _ovly_table[_novlys][4] = { | |
3507 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3508 | {..., ..., ..., ...}, | |
3509 | } | |
3510 | unsigned _novly_regions; /# number of overlay regions #/ | |
3511 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3512 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3513 | {..., ..., ...}, | |
3514 | } | |
c906108c SS |
3515 | These functions will attempt to update GDB's mappedness state in the |
3516 | symbol section table, based on the target's mappedness state. | |
3517 | ||
3518 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3519 | attempt to detect when the cached copy is invalidated. The main | |
3520 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3521 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3522 | the target (whenever possible). */ |
c906108c SS |
3523 | |
3524 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3525 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3526 | static unsigned cache_novlys = 0; |
c906108c | 3527 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3528 | enum ovly_index |
3529 | { | |
3530 | VMA, SIZE, LMA, MAPPED | |
3531 | }; | |
c906108c | 3532 | |
c378eb4e | 3533 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3534 | |
c906108c | 3535 | static void |
fba45db2 | 3536 | simple_free_overlay_table (void) |
c906108c SS |
3537 | { |
3538 | if (cache_ovly_table) | |
b8c9b27d | 3539 | xfree (cache_ovly_table); |
c5aa993b | 3540 | cache_novlys = 0; |
c906108c SS |
3541 | cache_ovly_table = NULL; |
3542 | cache_ovly_table_base = 0; | |
3543 | } | |
3544 | ||
9216df95 | 3545 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3546 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3547 | |
c906108c | 3548 | static void |
9216df95 | 3549 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3550 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3551 | { |
c378eb4e | 3552 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3553 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3554 | int i; |
c906108c | 3555 | |
9216df95 | 3556 | read_memory (memaddr, buf, len * size); |
c906108c | 3557 | for (i = 0; i < len; i++) |
e17a4113 | 3558 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3559 | } |
3560 | ||
3561 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3562 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3563 | |
c5aa993b | 3564 | static int |
fba45db2 | 3565 | simple_read_overlay_table (void) |
c906108c | 3566 | { |
3b7344d5 | 3567 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3568 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3569 | struct gdbarch *gdbarch; |
3570 | int word_size; | |
e17a4113 | 3571 | enum bfd_endian byte_order; |
c906108c SS |
3572 | |
3573 | simple_free_overlay_table (); | |
9b27852e | 3574 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3575 | if (! novlys_msym.minsym) |
c906108c | 3576 | { |
8a3fe4f8 | 3577 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3578 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3579 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3580 | return 0; |
c906108c | 3581 | } |
0d43edd1 | 3582 | |
7c7b6655 TT |
3583 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3584 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3585 | { |
8a3fe4f8 | 3586 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3587 | "`_ovly_table' array\n" |
8a3fe4f8 | 3588 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3589 | return 0; |
3590 | } | |
3591 | ||
7c7b6655 | 3592 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3593 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3594 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3595 | |
77e371c0 TT |
3596 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3597 | 4, byte_order); | |
0d43edd1 JB |
3598 | cache_ovly_table |
3599 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
77e371c0 | 3600 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3601 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3602 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3603 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3604 | |
c5aa993b | 3605 | return 1; /* SUCCESS */ |
c906108c SS |
3606 | } |
3607 | ||
5417f6dc | 3608 | /* Function: simple_overlay_update_1 |
c906108c SS |
3609 | A helper function for simple_overlay_update. Assuming a cached copy |
3610 | of _ovly_table exists, look through it to find an entry whose vma, | |
3611 | lma and size match those of OSECT. Re-read the entry and make sure | |
3612 | it still matches OSECT (else the table may no longer be valid). | |
3613 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3614 | success, 0 for failure. */ | |
3615 | ||
3616 | static int | |
fba45db2 | 3617 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3618 | { |
3619 | int i, size; | |
fbd35540 MS |
3620 | bfd *obfd = osect->objfile->obfd; |
3621 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3622 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3623 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3624 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3625 | |
2c500098 | 3626 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3627 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3628 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3629 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3630 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3631 | { |
9216df95 UW |
3632 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3633 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3634 | 4, word_size, byte_order); |
fbd35540 MS |
3635 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3636 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3637 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3638 | { |
3639 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3640 | return 1; | |
3641 | } | |
c378eb4e | 3642 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3643 | return 0; |
3644 | } | |
3645 | return 0; | |
3646 | } | |
3647 | ||
3648 | /* Function: simple_overlay_update | |
5417f6dc RM |
3649 | If OSECT is NULL, then update all sections' mapped state |
3650 | (after re-reading the entire target _ovly_table). | |
3651 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3652 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3653 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3654 | re-read the entire cache, and go ahead and update all sections. */ |
3655 | ||
1c772458 | 3656 | void |
fba45db2 | 3657 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3658 | { |
c5aa993b | 3659 | struct objfile *objfile; |
c906108c | 3660 | |
c378eb4e | 3661 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3662 | if (osect) |
c378eb4e | 3663 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3664 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3665 | { |
3666 | /* Does its cached location match what's currently in the | |
3667 | symtab? */ | |
3b7344d5 | 3668 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3669 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3670 | ||
3b7344d5 | 3671 | if (minsym.minsym == NULL) |
9cc89665 MS |
3672 | error (_("Error reading inferior's overlay table: couldn't " |
3673 | "find `_ovly_table' array\n" | |
3674 | "in inferior. Use `overlay manual' mode.")); | |
3675 | ||
77e371c0 | 3676 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3677 | /* Then go ahead and try to look up this single section in |
3678 | the cache. */ | |
3679 | if (simple_overlay_update_1 (osect)) | |
3680 | /* Found it! We're done. */ | |
3681 | return; | |
3682 | } | |
c906108c SS |
3683 | |
3684 | /* Cached table no good: need to read the entire table anew. | |
3685 | Or else we want all the sections, in which case it's actually | |
3686 | more efficient to read the whole table in one block anyway. */ | |
3687 | ||
0d43edd1 JB |
3688 | if (! simple_read_overlay_table ()) |
3689 | return; | |
3690 | ||
c378eb4e | 3691 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3692 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3693 | if (section_is_overlay (osect)) |
c5aa993b JM |
3694 | { |
3695 | int i, size; | |
fbd35540 MS |
3696 | bfd *obfd = osect->objfile->obfd; |
3697 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3698 | |
2c500098 | 3699 | size = bfd_get_section_size (bsect); |
c5aa993b | 3700 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3701 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3702 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3703 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3704 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3705 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3706 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3707 | } |
3708 | } | |
c906108c SS |
3709 | } |
3710 | ||
086df311 DJ |
3711 | /* Set the output sections and output offsets for section SECTP in |
3712 | ABFD. The relocation code in BFD will read these offsets, so we | |
3713 | need to be sure they're initialized. We map each section to itself, | |
3714 | with no offset; this means that SECTP->vma will be honored. */ | |
3715 | ||
3716 | static void | |
3717 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3718 | { | |
3719 | sectp->output_section = sectp; | |
3720 | sectp->output_offset = 0; | |
3721 | } | |
3722 | ||
ac8035ab TG |
3723 | /* Default implementation for sym_relocate. */ |
3724 | ||
ac8035ab TG |
3725 | bfd_byte * |
3726 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3727 | bfd_byte *buf) | |
3728 | { | |
3019eac3 DE |
3729 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3730 | DWO file. */ | |
3731 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3732 | |
3733 | /* We're only interested in sections with relocation | |
3734 | information. */ | |
3735 | if ((sectp->flags & SEC_RELOC) == 0) | |
3736 | return NULL; | |
3737 | ||
3738 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3739 | all sections begin at 0. */ | |
3740 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3741 | ||
3742 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3743 | } | |
3744 | ||
086df311 DJ |
3745 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3746 | contents are stored in BUF if it is non-NULL, or returned in a | |
3747 | malloc'd buffer otherwise. | |
3748 | ||
3749 | For some platforms and debug info formats, shared libraries contain | |
3750 | relocations against the debug sections (particularly for DWARF-2; | |
3751 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3752 | the version of the linker in use). Also, ELF object files naturally | |
3753 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3754 | the relocations in order to get the locations of symbols correct. |
3755 | Another example that may require relocation processing, is the | |
3756 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3757 | debug section. */ | |
086df311 DJ |
3758 | |
3759 | bfd_byte * | |
ac8035ab TG |
3760 | symfile_relocate_debug_section (struct objfile *objfile, |
3761 | asection *sectp, bfd_byte *buf) | |
086df311 | 3762 | { |
ac8035ab | 3763 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3764 | |
ac8035ab | 3765 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3766 | } |
c906108c | 3767 | |
31d99776 DJ |
3768 | struct symfile_segment_data * |
3769 | get_symfile_segment_data (bfd *abfd) | |
3770 | { | |
00b5771c | 3771 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3772 | |
3773 | if (sf == NULL) | |
3774 | return NULL; | |
3775 | ||
3776 | return sf->sym_segments (abfd); | |
3777 | } | |
3778 | ||
3779 | void | |
3780 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3781 | { | |
3782 | xfree (data->segment_bases); | |
3783 | xfree (data->segment_sizes); | |
3784 | xfree (data->segment_info); | |
3785 | xfree (data); | |
3786 | } | |
3787 | ||
28c32713 JB |
3788 | /* Given: |
3789 | - DATA, containing segment addresses from the object file ABFD, and | |
3790 | the mapping from ABFD's sections onto the segments that own them, | |
3791 | and | |
3792 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3793 | segment addresses reported by the target, | |
3794 | store the appropriate offsets for each section in OFFSETS. | |
3795 | ||
3796 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3797 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3798 | ||
8d385431 DJ |
3799 | If there are more entries, then ignore the extra. The target may |
3800 | not be able to distinguish between an empty data segment and a | |
3801 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3802 | |
31d99776 | 3803 | int |
3189cb12 DE |
3804 | symfile_map_offsets_to_segments (bfd *abfd, |
3805 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3806 | struct section_offsets *offsets, |
3807 | int num_segment_bases, | |
3808 | const CORE_ADDR *segment_bases) | |
3809 | { | |
3810 | int i; | |
3811 | asection *sect; | |
3812 | ||
28c32713 JB |
3813 | /* It doesn't make sense to call this function unless you have some |
3814 | segment base addresses. */ | |
202b96c1 | 3815 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3816 | |
31d99776 DJ |
3817 | /* If we do not have segment mappings for the object file, we |
3818 | can not relocate it by segments. */ | |
3819 | gdb_assert (data != NULL); | |
3820 | gdb_assert (data->num_segments > 0); | |
3821 | ||
31d99776 DJ |
3822 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3823 | { | |
31d99776 DJ |
3824 | int which = data->segment_info[i]; |
3825 | ||
28c32713 JB |
3826 | gdb_assert (0 <= which && which <= data->num_segments); |
3827 | ||
3828 | /* Don't bother computing offsets for sections that aren't | |
3829 | loaded as part of any segment. */ | |
3830 | if (! which) | |
3831 | continue; | |
3832 | ||
3833 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3834 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3835 | if (which > num_segment_bases) |
28c32713 | 3836 | which = num_segment_bases; |
31d99776 | 3837 | |
28c32713 JB |
3838 | offsets->offsets[i] = (segment_bases[which - 1] |
3839 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3840 | } |
3841 | ||
3842 | return 1; | |
3843 | } | |
3844 | ||
3845 | static void | |
3846 | symfile_find_segment_sections (struct objfile *objfile) | |
3847 | { | |
3848 | bfd *abfd = objfile->obfd; | |
3849 | int i; | |
3850 | asection *sect; | |
3851 | struct symfile_segment_data *data; | |
3852 | ||
3853 | data = get_symfile_segment_data (objfile->obfd); | |
3854 | if (data == NULL) | |
3855 | return; | |
3856 | ||
3857 | if (data->num_segments != 1 && data->num_segments != 2) | |
3858 | { | |
3859 | free_symfile_segment_data (data); | |
3860 | return; | |
3861 | } | |
3862 | ||
3863 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3864 | { | |
31d99776 DJ |
3865 | int which = data->segment_info[i]; |
3866 | ||
3867 | if (which == 1) | |
3868 | { | |
3869 | if (objfile->sect_index_text == -1) | |
3870 | objfile->sect_index_text = sect->index; | |
3871 | ||
3872 | if (objfile->sect_index_rodata == -1) | |
3873 | objfile->sect_index_rodata = sect->index; | |
3874 | } | |
3875 | else if (which == 2) | |
3876 | { | |
3877 | if (objfile->sect_index_data == -1) | |
3878 | objfile->sect_index_data = sect->index; | |
3879 | ||
3880 | if (objfile->sect_index_bss == -1) | |
3881 | objfile->sect_index_bss = sect->index; | |
3882 | } | |
3883 | } | |
3884 | ||
3885 | free_symfile_segment_data (data); | |
3886 | } | |
3887 | ||
76ad5e1e NB |
3888 | /* Listen for free_objfile events. */ |
3889 | ||
3890 | static void | |
3891 | symfile_free_objfile (struct objfile *objfile) | |
3892 | { | |
c33b2f12 MM |
3893 | /* Remove the target sections owned by this objfile. */ |
3894 | if (objfile != NULL) | |
76ad5e1e NB |
3895 | remove_target_sections ((void *) objfile); |
3896 | } | |
3897 | ||
540c2971 DE |
3898 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3899 | Expand all symtabs that match the specified criteria. | |
3900 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3901 | ||
3902 | void | |
bb4142cf DE |
3903 | expand_symtabs_matching (expand_symtabs_file_matcher_ftype *file_matcher, |
3904 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
3905 | enum search_domain kind, | |
3906 | void *data) | |
540c2971 DE |
3907 | { |
3908 | struct objfile *objfile; | |
3909 | ||
3910 | ALL_OBJFILES (objfile) | |
3911 | { | |
3912 | if (objfile->sf) | |
bb4142cf DE |
3913 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
3914 | symbol_matcher, kind, | |
3915 | data); | |
540c2971 DE |
3916 | } |
3917 | } | |
3918 | ||
3919 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3920 | Map function FUN over every file. | |
3921 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3922 | ||
3923 | void | |
bb4142cf DE |
3924 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3925 | int need_fullname) | |
540c2971 DE |
3926 | { |
3927 | struct objfile *objfile; | |
3928 | ||
3929 | ALL_OBJFILES (objfile) | |
3930 | { | |
3931 | if (objfile->sf) | |
3932 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3933 | need_fullname); | |
3934 | } | |
3935 | } | |
3936 | ||
c906108c | 3937 | void |
fba45db2 | 3938 | _initialize_symfile (void) |
c906108c SS |
3939 | { |
3940 | struct cmd_list_element *c; | |
c5aa993b | 3941 | |
76ad5e1e NB |
3942 | observer_attach_free_objfile (symfile_free_objfile); |
3943 | ||
1a966eab AC |
3944 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3945 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3946 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3947 | to execute."), &cmdlist); |
5ba2abeb | 3948 | set_cmd_completer (c, filename_completer); |
c906108c | 3949 | |
1a966eab | 3950 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3951 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3952 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3953 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3954 | The optional arguments are section-name section-address pairs and\n\ |
3955 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3956 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3957 | &cmdlist); |
5ba2abeb | 3958 | set_cmd_completer (c, filename_completer); |
c906108c | 3959 | |
63644780 NB |
3960 | c = add_cmd ("remove-symbol-file", class_files, |
3961 | remove_symbol_file_command, _("\ | |
3962 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3963 | Usage: remove-symbol-file FILENAME\n\ | |
3964 | remove-symbol-file -a ADDRESS\n\ | |
3965 | The file to remove can be identified by its filename or by an address\n\ | |
3966 | that lies within the boundaries of this symbol file in memory."), | |
3967 | &cmdlist); | |
3968 | ||
1a966eab AC |
3969 | c = add_cmd ("load", class_files, load_command, _("\ |
3970 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3971 | for access from GDB.\n\ |
3972 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3973 | set_cmd_completer (c, filename_completer); |
c906108c | 3974 | |
c5aa993b | 3975 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3976 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3977 | "overlay ", 0, &cmdlist); |
3978 | ||
3979 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3980 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3981 | ||
c5aa993b | 3982 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3983 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3984 | |
c5aa993b | 3985 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3986 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3987 | |
c5aa993b | 3988 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3989 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3990 | |
c5aa993b | 3991 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3992 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3993 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3994 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3995 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3996 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3997 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3998 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3999 | |
4000 | /* Filename extension to source language lookup table: */ | |
4001 | init_filename_language_table (); | |
26c41df3 AC |
4002 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4003 | &ext_args, _("\ | |
4004 | Set mapping between filename extension and source language."), _("\ | |
4005 | Show mapping between filename extension and source language."), _("\ | |
4006 | Usage: set extension-language .foo bar"), | |
4007 | set_ext_lang_command, | |
920d2a44 | 4008 | show_ext_args, |
26c41df3 | 4009 | &setlist, &showlist); |
c906108c | 4010 | |
c5aa993b | 4011 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4012 | _("All filename extensions associated with a source language.")); |
917317f4 | 4013 | |
525226b5 AC |
4014 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4015 | &debug_file_directory, _("\ | |
24ddea62 JK |
4016 | Set the directories where separate debug symbols are searched for."), _("\ |
4017 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
4018 | Separate debug symbols are first searched for in the same\n\ |
4019 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4020 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 4021 | each global debug-file-directory component prepended."), |
525226b5 | 4022 | NULL, |
920d2a44 | 4023 | show_debug_file_directory, |
525226b5 | 4024 | &setlist, &showlist); |
770e7fc7 DE |
4025 | |
4026 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
4027 | print_symbol_loading_enums, &print_symbol_loading, | |
4028 | _("\ | |
4029 | Set printing of symbol loading messages."), _("\ | |
4030 | Show printing of symbol loading messages."), _("\ | |
4031 | off == turn all messages off\n\ | |
4032 | brief == print messages for the executable,\n\ | |
4033 | and brief messages for shared libraries\n\ | |
4034 | full == print messages for the executable,\n\ | |
4035 | and messages for each shared library."), | |
4036 | NULL, | |
4037 | NULL, | |
4038 | &setprintlist, &showprintlist); | |
c906108c | 4039 | } |