Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1990-2015 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> | |
438e1e42 | 65 | #include "gdb_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. */ | |
8d749320 | 558 | array = XNEWVEC (struct other_sections *, 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 | 616 | |
8d749320 | 617 | addrs_to_abfd_addrs = XCNEWVEC (struct other_sections *, addrs->num_sections); |
82ccf5a5 JK |
618 | make_cleanup (xfree, addrs_to_abfd_addrs); |
619 | ||
620 | while (*addrs_sorted) | |
621 | { | |
1276c759 | 622 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
623 | |
624 | while (*abfd_addrs_sorted | |
1276c759 JK |
625 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
626 | sect_name) < 0) | |
82ccf5a5 JK |
627 | abfd_addrs_sorted++; |
628 | ||
629 | if (*abfd_addrs_sorted | |
1276c759 JK |
630 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
631 | sect_name) == 0) | |
82ccf5a5 JK |
632 | { |
633 | int index_in_addrs; | |
634 | ||
635 | /* Make the found item directly addressable from ADDRS. */ | |
636 | index_in_addrs = *addrs_sorted - addrs->other; | |
637 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
638 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
639 | ||
640 | /* Never use the same ABFD entry twice. */ | |
641 | abfd_addrs_sorted++; | |
642 | } | |
643 | ||
644 | addrs_sorted++; | |
645 | } | |
646 | ||
75242ef4 JK |
647 | /* Calculate offsets for the loadable sections. |
648 | FIXME! Sections must be in order of increasing loadable section | |
649 | so that contiguous sections can use the lower-offset!!! | |
650 | ||
651 | Adjust offsets if the segments are not contiguous. | |
652 | If the section is contiguous, its offset should be set to | |
653 | the offset of the highest loadable section lower than it | |
654 | (the loadable section directly below it in memory). | |
655 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
656 | ||
d76488d8 | 657 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 658 | { |
82ccf5a5 | 659 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
660 | |
661 | if (sect) | |
75242ef4 | 662 | { |
c378eb4e | 663 | /* This is the index used by BFD. */ |
82ccf5a5 | 664 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
665 | |
666 | if (addrs->other[i].addr != 0) | |
75242ef4 | 667 | { |
82ccf5a5 | 668 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 669 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
670 | } |
671 | else | |
672d9c23 | 672 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
673 | } |
674 | else | |
672d9c23 | 675 | { |
1276c759 JK |
676 | /* addr_section_name transformation is not used for SECT_NAME. */ |
677 | const char *sect_name = addrs->other[i].name; | |
678 | ||
b0fcb67f JK |
679 | /* This section does not exist in ABFD, which is normally |
680 | unexpected and we want to issue a warning. | |
681 | ||
4d9743af JK |
682 | However, the ELF prelinker does create a few sections which are |
683 | marked in the main executable as loadable (they are loaded in | |
684 | memory from the DYNAMIC segment) and yet are not present in | |
685 | separate debug info files. This is fine, and should not cause | |
686 | a warning. Shared libraries contain just the section | |
687 | ".gnu.liblist" but it is not marked as loadable there. There is | |
688 | no other way to identify them than by their name as the sections | |
1276c759 JK |
689 | created by prelink have no special flags. |
690 | ||
691 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
692 | |
693 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 694 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
695 | || (strcmp (sect_name, ".bss") == 0 |
696 | && i > 0 | |
697 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
698 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
699 | || (strcmp (sect_name, ".sbss") == 0 | |
700 | && i > 0 | |
701 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
702 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
703 | warning (_("section %s not found in %s"), sect_name, |
704 | bfd_get_filename (abfd)); | |
705 | ||
672d9c23 | 706 | addrs->other[i].addr = 0; |
5488dafb | 707 | addrs->other[i].sectindex = -1; |
672d9c23 | 708 | } |
75242ef4 | 709 | } |
82ccf5a5 JK |
710 | |
711 | do_cleanups (my_cleanup); | |
75242ef4 JK |
712 | } |
713 | ||
714 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
715 | of how to represent it for fast symbol reading. This is the default | |
716 | version of the sym_fns.sym_offsets function for symbol readers that | |
717 | don't need to do anything special. It allocates a section_offsets table | |
718 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
719 | ||
720 | void | |
721 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 722 | const struct section_addr_info *addrs) |
75242ef4 | 723 | { |
d445b2f6 | 724 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
725 | objfile->section_offsets = (struct section_offsets *) |
726 | obstack_alloc (&objfile->objfile_obstack, | |
727 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
728 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
729 | objfile->num_sections, addrs); | |
e8289572 | 730 | |
c1bd25fd DJ |
731 | /* For relocatable files, all loadable sections will start at zero. |
732 | The zero is meaningless, so try to pick arbitrary addresses such | |
733 | that no loadable sections overlap. This algorithm is quadratic, | |
734 | but the number of sections in a single object file is generally | |
735 | small. */ | |
736 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
737 | { | |
738 | struct place_section_arg arg; | |
2711e456 DJ |
739 | bfd *abfd = objfile->obfd; |
740 | asection *cur_sec; | |
2711e456 DJ |
741 | |
742 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
743 | /* We do not expect this to happen; just skip this step if the | |
744 | relocatable file has a section with an assigned VMA. */ | |
745 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
746 | break; | |
747 | ||
748 | if (cur_sec == NULL) | |
749 | { | |
750 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
751 | ||
752 | /* Pick non-overlapping offsets for sections the user did not | |
753 | place explicitly. */ | |
754 | arg.offsets = objfile->section_offsets; | |
755 | arg.lowest = 0; | |
756 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
757 | ||
758 | /* Correctly filling in the section offsets is not quite | |
759 | enough. Relocatable files have two properties that | |
760 | (most) shared objects do not: | |
761 | ||
762 | - Their debug information will contain relocations. Some | |
763 | shared libraries do also, but many do not, so this can not | |
764 | be assumed. | |
765 | ||
766 | - If there are multiple code sections they will be loaded | |
767 | at different relative addresses in memory than they are | |
768 | in the objfile, since all sections in the file will start | |
769 | at address zero. | |
770 | ||
771 | Because GDB has very limited ability to map from an | |
772 | address in debug info to the correct code section, | |
773 | it relies on adding SECT_OFF_TEXT to things which might be | |
774 | code. If we clear all the section offsets, and set the | |
775 | section VMAs instead, then symfile_relocate_debug_section | |
776 | will return meaningful debug information pointing at the | |
777 | correct sections. | |
778 | ||
779 | GDB has too many different data structures for section | |
780 | addresses - a bfd, objfile, and so_list all have section | |
781 | tables, as does exec_ops. Some of these could probably | |
782 | be eliminated. */ | |
783 | ||
784 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
785 | cur_sec = cur_sec->next) | |
786 | { | |
787 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
788 | continue; | |
789 | ||
790 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
791 | exec_set_section_address (bfd_get_filename (abfd), |
792 | cur_sec->index, | |
30510692 | 793 | offsets[cur_sec->index]); |
2711e456 DJ |
794 | offsets[cur_sec->index] = 0; |
795 | } | |
796 | } | |
c1bd25fd DJ |
797 | } |
798 | ||
e8289572 | 799 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 800 | .rodata sections. */ |
e8289572 JB |
801 | init_objfile_sect_indices (objfile); |
802 | } | |
803 | ||
31d99776 DJ |
804 | /* Divide the file into segments, which are individual relocatable units. |
805 | This is the default version of the sym_fns.sym_segments function for | |
806 | symbol readers that do not have an explicit representation of segments. | |
807 | It assumes that object files do not have segments, and fully linked | |
808 | files have a single segment. */ | |
809 | ||
810 | struct symfile_segment_data * | |
811 | default_symfile_segments (bfd *abfd) | |
812 | { | |
813 | int num_sections, i; | |
814 | asection *sect; | |
815 | struct symfile_segment_data *data; | |
816 | CORE_ADDR low, high; | |
817 | ||
818 | /* Relocatable files contain enough information to position each | |
819 | loadable section independently; they should not be relocated | |
820 | in segments. */ | |
821 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
822 | return NULL; | |
823 | ||
824 | /* Make sure there is at least one loadable section in the file. */ | |
825 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
826 | { | |
827 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
828 | continue; | |
829 | ||
830 | break; | |
831 | } | |
832 | if (sect == NULL) | |
833 | return NULL; | |
834 | ||
835 | low = bfd_get_section_vma (abfd, sect); | |
836 | high = low + bfd_get_section_size (sect); | |
837 | ||
41bf6aca | 838 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 839 | data->num_segments = 1; |
fc270c35 TT |
840 | data->segment_bases = XCNEW (CORE_ADDR); |
841 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
842 | |
843 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 844 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
845 | |
846 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
847 | { | |
848 | CORE_ADDR vma; | |
849 | ||
850 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
851 | continue; | |
852 | ||
853 | vma = bfd_get_section_vma (abfd, sect); | |
854 | if (vma < low) | |
855 | low = vma; | |
856 | if (vma + bfd_get_section_size (sect) > high) | |
857 | high = vma + bfd_get_section_size (sect); | |
858 | ||
859 | data->segment_info[i] = 1; | |
860 | } | |
861 | ||
862 | data->segment_bases[0] = low; | |
863 | data->segment_sizes[0] = high - low; | |
864 | ||
865 | return data; | |
866 | } | |
867 | ||
608e2dbb TT |
868 | /* This is a convenience function to call sym_read for OBJFILE and |
869 | possibly force the partial symbols to be read. */ | |
870 | ||
871 | static void | |
872 | read_symbols (struct objfile *objfile, int add_flags) | |
873 | { | |
874 | (*objfile->sf->sym_read) (objfile, add_flags); | |
34643a32 | 875 | objfile->per_bfd->minsyms_read = 1; |
8a92335b JK |
876 | |
877 | /* find_separate_debug_file_in_section should be called only if there is | |
878 | single binary with no existing separate debug info file. */ | |
879 | if (!objfile_has_partial_symbols (objfile) | |
880 | && objfile->separate_debug_objfile == NULL | |
881 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb TT |
882 | { |
883 | bfd *abfd = find_separate_debug_file_in_section (objfile); | |
884 | struct cleanup *cleanup = make_cleanup_bfd_unref (abfd); | |
885 | ||
886 | if (abfd != NULL) | |
24ba069a JK |
887 | { |
888 | /* find_separate_debug_file_in_section uses the same filename for the | |
889 | virtual section-as-bfd like the bfd filename containing the | |
890 | section. Therefore use also non-canonical name form for the same | |
891 | file containing the section. */ | |
892 | symbol_file_add_separate (abfd, objfile->original_name, add_flags, | |
893 | objfile); | |
894 | } | |
608e2dbb TT |
895 | |
896 | do_cleanups (cleanup); | |
897 | } | |
898 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
899 | require_partial_symbols (objfile, 0); | |
900 | } | |
901 | ||
3d6e24f0 JB |
902 | /* Initialize entry point information for this objfile. */ |
903 | ||
904 | static void | |
905 | init_entry_point_info (struct objfile *objfile) | |
906 | { | |
6ef55de7 TT |
907 | struct entry_info *ei = &objfile->per_bfd->ei; |
908 | ||
909 | if (ei->initialized) | |
910 | return; | |
911 | ei->initialized = 1; | |
912 | ||
3d6e24f0 JB |
913 | /* Save startup file's range of PC addresses to help blockframe.c |
914 | decide where the bottom of the stack is. */ | |
915 | ||
916 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
917 | { | |
918 | /* Executable file -- record its entry point so we'll recognize | |
919 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
920 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
921 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
922 | } |
923 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
924 | && bfd_get_start_address (objfile->obfd) != 0) | |
925 | { | |
926 | /* Some shared libraries may have entry points set and be | |
927 | runnable. There's no clear way to indicate this, so just check | |
928 | for values other than zero. */ | |
6ef55de7 TT |
929 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
930 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
931 | } |
932 | else | |
933 | { | |
934 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 935 | ei->entry_point_p = 0; |
3d6e24f0 JB |
936 | } |
937 | ||
6ef55de7 | 938 | if (ei->entry_point_p) |
3d6e24f0 | 939 | { |
53eddfa6 | 940 | struct obj_section *osect; |
6ef55de7 | 941 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 942 | int found; |
3d6e24f0 JB |
943 | |
944 | /* Make certain that the address points at real code, and not a | |
945 | function descriptor. */ | |
946 | entry_point | |
df6d5441 | 947 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
948 | entry_point, |
949 | ¤t_target); | |
950 | ||
951 | /* Remove any ISA markers, so that this matches entries in the | |
952 | symbol table. */ | |
6ef55de7 | 953 | ei->entry_point |
df6d5441 | 954 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
955 | |
956 | found = 0; | |
957 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
958 | { | |
959 | struct bfd_section *sect = osect->the_bfd_section; | |
960 | ||
961 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
962 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
963 | + bfd_get_section_size (sect))) | |
964 | { | |
6ef55de7 | 965 | ei->the_bfd_section_index |
53eddfa6 TT |
966 | = gdb_bfd_section_index (objfile->obfd, sect); |
967 | found = 1; | |
968 | break; | |
969 | } | |
970 | } | |
971 | ||
972 | if (!found) | |
6ef55de7 | 973 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
974 | } |
975 | } | |
976 | ||
c906108c SS |
977 | /* Process a symbol file, as either the main file or as a dynamically |
978 | loaded file. | |
979 | ||
36e4d068 JB |
980 | This function does not set the OBJFILE's entry-point info. |
981 | ||
96baa820 JM |
982 | OBJFILE is where the symbols are to be read from. |
983 | ||
7e8580c1 JB |
984 | ADDRS is the list of section load addresses. If the user has given |
985 | an 'add-symbol-file' command, then this is the list of offsets and | |
986 | addresses he or she provided as arguments to the command; or, if | |
987 | we're handling a shared library, these are the actual addresses the | |
988 | sections are loaded at, according to the inferior's dynamic linker | |
989 | (as gleaned by GDB's shared library code). We convert each address | |
990 | into an offset from the section VMA's as it appears in the object | |
991 | file, and then call the file's sym_offsets function to convert this | |
992 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 993 | |
7eedccfa PP |
994 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
995 | an extra symbol file such as dynamically loaded code, and wether | |
996 | breakpoint reset should be deferred. */ | |
c906108c | 997 | |
36e4d068 JB |
998 | static void |
999 | syms_from_objfile_1 (struct objfile *objfile, | |
1000 | struct section_addr_info *addrs, | |
36e4d068 | 1001 | int add_flags) |
c906108c | 1002 | { |
a39a16c4 | 1003 | struct section_addr_info *local_addr = NULL; |
c906108c | 1004 | struct cleanup *old_chain; |
7eedccfa | 1005 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 1006 | |
8fb8eb5c | 1007 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 1008 | |
75245b24 | 1009 | if (objfile->sf == NULL) |
36e4d068 JB |
1010 | { |
1011 | /* No symbols to load, but we still need to make sure | |
1012 | that the section_offsets table is allocated. */ | |
d445b2f6 | 1013 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 1014 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
1015 | |
1016 | objfile->num_sections = num_sections; | |
1017 | objfile->section_offsets | |
1018 | = obstack_alloc (&objfile->objfile_obstack, size); | |
1019 | memset (objfile->section_offsets, 0, size); | |
1020 | return; | |
1021 | } | |
75245b24 | 1022 | |
c906108c SS |
1023 | /* Make sure that partially constructed symbol tables will be cleaned up |
1024 | if an error occurs during symbol reading. */ | |
74b7792f | 1025 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 1026 | |
6bf667bb DE |
1027 | /* If ADDRS is NULL, put together a dummy address list. |
1028 | We now establish the convention that an addr of zero means | |
c378eb4e | 1029 | no load address was specified. */ |
6bf667bb | 1030 | if (! addrs) |
a39a16c4 | 1031 | { |
d445b2f6 | 1032 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
1033 | make_cleanup (xfree, local_addr); |
1034 | addrs = local_addr; | |
1035 | } | |
1036 | ||
c5aa993b | 1037 | if (mainline) |
c906108c SS |
1038 | { |
1039 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 1040 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 1041 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
1042 | |
1043 | /* Since no error yet, throw away the old symbol table. */ | |
1044 | ||
1045 | if (symfile_objfile != NULL) | |
1046 | { | |
1047 | free_objfile (symfile_objfile); | |
adb7f338 | 1048 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
1049 | } |
1050 | ||
1051 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
1052 | If the user wants to get rid of them, they should do "symbol-file" |
1053 | without arguments first. Not sure this is the best behavior | |
1054 | (PR 2207). */ | |
c906108c | 1055 | |
c5aa993b | 1056 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
1057 | } |
1058 | ||
1059 | /* Convert addr into an offset rather than an absolute address. | |
1060 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1061 | and assume that <addr> is where that got loaded. |
c906108c | 1062 | |
53a5351d JM |
1063 | We no longer warn if the lowest section is not a text segment (as |
1064 | happens for the PA64 port. */ | |
6bf667bb | 1065 | if (addrs->num_sections > 0) |
75242ef4 | 1066 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1067 | |
1068 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1069 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1070 | initial symbol reading for this file. */ |
c906108c | 1071 | |
c5aa993b | 1072 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1073 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1074 | |
6bf667bb | 1075 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1076 | |
608e2dbb | 1077 | read_symbols (objfile, add_flags); |
b11896a5 | 1078 | |
c906108c SS |
1079 | /* Discard cleanups as symbol reading was successful. */ |
1080 | ||
1081 | discard_cleanups (old_chain); | |
f7545552 | 1082 | xfree (local_addr); |
c906108c SS |
1083 | } |
1084 | ||
36e4d068 JB |
1085 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1086 | entry-point info. */ | |
1087 | ||
6bf667bb | 1088 | static void |
36e4d068 JB |
1089 | syms_from_objfile (struct objfile *objfile, |
1090 | struct section_addr_info *addrs, | |
36e4d068 JB |
1091 | int add_flags) |
1092 | { | |
6bf667bb | 1093 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1094 | init_entry_point_info (objfile); |
1095 | } | |
1096 | ||
c906108c SS |
1097 | /* Perform required actions after either reading in the initial |
1098 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1099 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1100 | |
e7d52ed3 DE |
1101 | static void |
1102 | finish_new_objfile (struct objfile *objfile, int add_flags) | |
c906108c | 1103 | { |
c906108c | 1104 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1105 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1106 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1107 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1108 | { |
1109 | /* OK, make it the "real" symbol file. */ | |
1110 | symfile_objfile = objfile; | |
1111 | ||
c1e56572 | 1112 | clear_symtab_users (add_flags); |
c906108c | 1113 | } |
7eedccfa | 1114 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1115 | { |
69de3c6a | 1116 | breakpoint_re_set (); |
c906108c SS |
1117 | } |
1118 | ||
1119 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1120 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1121 | } |
1122 | ||
1123 | /* Process a symbol file, as either the main file or as a dynamically | |
1124 | loaded file. | |
1125 | ||
5417f6dc | 1126 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1127 | A new reference is acquired by this function. |
7904e09f | 1128 | |
24ba069a JK |
1129 | For NAME description see allocate_objfile's definition. |
1130 | ||
7eedccfa PP |
1131 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1132 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1133 | |
6bf667bb | 1134 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1135 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1136 | |
63524580 JK |
1137 | PARENT is the original objfile if ABFD is a separate debug info file. |
1138 | Otherwise PARENT is NULL. | |
1139 | ||
c906108c | 1140 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1141 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1142 | |
7904e09f | 1143 | static struct objfile * |
24ba069a | 1144 | symbol_file_add_with_addrs (bfd *abfd, const char *name, int add_flags, |
6bf667bb DE |
1145 | struct section_addr_info *addrs, |
1146 | int flags, struct objfile *parent) | |
c906108c SS |
1147 | { |
1148 | struct objfile *objfile; | |
7eedccfa | 1149 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1150 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1151 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1152 | && (readnow_symbol_files |
1153 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1154 | |
9291a0cd | 1155 | if (readnow_symbol_files) |
b11896a5 TT |
1156 | { |
1157 | flags |= OBJF_READNOW; | |
1158 | add_flags &= ~SYMFILE_NO_READ; | |
1159 | } | |
9291a0cd | 1160 | |
5417f6dc RM |
1161 | /* Give user a chance to burp if we'd be |
1162 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1163 | |
1164 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1165 | && mainline |
c906108c | 1166 | && from_tty |
9e2f0ad4 | 1167 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1168 | error (_("Not confirmed.")); |
c906108c | 1169 | |
24ba069a JK |
1170 | objfile = allocate_objfile (abfd, name, |
1171 | flags | (mainline ? OBJF_MAINLINE : 0)); | |
c906108c | 1172 | |
63524580 JK |
1173 | if (parent) |
1174 | add_separate_debug_objfile (objfile, parent); | |
1175 | ||
78a4a9b9 AC |
1176 | /* We either created a new mapped symbol table, mapped an existing |
1177 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1178 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1179 | if (should_print) |
c906108c | 1180 | { |
769d7dc4 AC |
1181 | if (deprecated_pre_add_symbol_hook) |
1182 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1183 | else |
c906108c | 1184 | { |
55333a84 DE |
1185 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1186 | wrap_here (""); | |
1187 | gdb_flush (gdb_stdout); | |
c906108c | 1188 | } |
c906108c | 1189 | } |
6bf667bb | 1190 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1191 | |
1192 | /* We now have at least a partial symbol table. Check to see if the | |
1193 | user requested that all symbols be read on initial access via either | |
1194 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1195 | all partial symbol tables for this objfile if so. */ |
c906108c | 1196 | |
9291a0cd | 1197 | if ((flags & OBJF_READNOW)) |
c906108c | 1198 | { |
b11896a5 | 1199 | if (should_print) |
c906108c | 1200 | { |
a3f17187 | 1201 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1202 | wrap_here (""); |
1203 | gdb_flush (gdb_stdout); | |
1204 | } | |
1205 | ||
ccefe4c4 TT |
1206 | if (objfile->sf) |
1207 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1208 | } |
1209 | ||
b11896a5 | 1210 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1211 | { |
1212 | wrap_here (""); | |
55333a84 | 1213 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1214 | wrap_here (""); |
1215 | } | |
1216 | ||
b11896a5 | 1217 | if (should_print) |
c906108c | 1218 | { |
769d7dc4 AC |
1219 | if (deprecated_post_add_symbol_hook) |
1220 | deprecated_post_add_symbol_hook (); | |
c906108c | 1221 | else |
55333a84 | 1222 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1223 | } |
1224 | ||
481d0f41 JB |
1225 | /* We print some messages regardless of whether 'from_tty || |
1226 | info_verbose' is true, so make sure they go out at the right | |
1227 | time. */ | |
1228 | gdb_flush (gdb_stdout); | |
1229 | ||
109f874e | 1230 | if (objfile->sf == NULL) |
8caee43b PP |
1231 | { |
1232 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1233 | return objfile; /* No symbols. */ |
8caee43b | 1234 | } |
109f874e | 1235 | |
e7d52ed3 | 1236 | finish_new_objfile (objfile, add_flags); |
c906108c | 1237 | |
06d3b283 | 1238 | observer_notify_new_objfile (objfile); |
c906108c | 1239 | |
ce7d4522 | 1240 | bfd_cache_close_all (); |
c906108c SS |
1241 | return (objfile); |
1242 | } | |
1243 | ||
24ba069a JK |
1244 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
1245 | see allocate_objfile's definition. */ | |
9cce227f TG |
1246 | |
1247 | void | |
24ba069a JK |
1248 | symbol_file_add_separate (bfd *bfd, const char *name, int symfile_flags, |
1249 | struct objfile *objfile) | |
9cce227f | 1250 | { |
15d123c9 | 1251 | struct objfile *new_objfile; |
089b4803 TG |
1252 | struct section_addr_info *sap; |
1253 | struct cleanup *my_cleanup; | |
1254 | ||
1255 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1256 | because sections of BFD may not match sections of OBJFILE and because | |
1257 | vma may have been modified by tools such as prelink. */ | |
1258 | sap = build_section_addr_info_from_objfile (objfile); | |
1259 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1260 | |
6bf667bb | 1261 | new_objfile = symbol_file_add_with_addrs |
24ba069a | 1262 | (bfd, name, symfile_flags, sap, |
9cce227f | 1263 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1264 | | OBJF_USERLOADED), |
1265 | objfile); | |
089b4803 TG |
1266 | |
1267 | do_cleanups (my_cleanup); | |
9cce227f | 1268 | } |
7904e09f | 1269 | |
eb4556d7 JB |
1270 | /* Process the symbol file ABFD, as either the main file or as a |
1271 | dynamically loaded file. | |
6bf667bb | 1272 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1273 | |
eb4556d7 | 1274 | struct objfile * |
24ba069a | 1275 | symbol_file_add_from_bfd (bfd *abfd, const char *name, int add_flags, |
eb4556d7 | 1276 | struct section_addr_info *addrs, |
63524580 | 1277 | int flags, struct objfile *parent) |
eb4556d7 | 1278 | { |
24ba069a JK |
1279 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1280 | parent); | |
eb4556d7 JB |
1281 | } |
1282 | ||
7904e09f | 1283 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1284 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1285 | |
7904e09f | 1286 | struct objfile * |
69150c3d JK |
1287 | symbol_file_add (const char *name, int add_flags, |
1288 | struct section_addr_info *addrs, int flags) | |
7904e09f | 1289 | { |
8ac244b4 TT |
1290 | bfd *bfd = symfile_bfd_open (name); |
1291 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1292 | struct objfile *objf; | |
1293 | ||
24ba069a | 1294 | objf = symbol_file_add_from_bfd (bfd, name, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1295 | do_cleanups (cleanup); |
1296 | return objf; | |
7904e09f JB |
1297 | } |
1298 | ||
d7db6da9 FN |
1299 | /* Call symbol_file_add() with default values and update whatever is |
1300 | affected by the loading of a new main(). | |
1301 | Used when the file is supplied in the gdb command line | |
1302 | and by some targets with special loading requirements. | |
1303 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1304 | argument for the switches that can only be specified in the symbol_file | |
1305 | command itself. */ | |
5417f6dc | 1306 | |
1adeb98a | 1307 | void |
69150c3d | 1308 | symbol_file_add_main (const char *args, int from_tty) |
1adeb98a | 1309 | { |
d7db6da9 FN |
1310 | symbol_file_add_main_1 (args, from_tty, 0); |
1311 | } | |
1312 | ||
1313 | static void | |
69150c3d | 1314 | symbol_file_add_main_1 (const char *args, int from_tty, int flags) |
d7db6da9 | 1315 | { |
7dcd53a0 TT |
1316 | const int add_flags = (current_inferior ()->symfile_flags |
1317 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1318 | ||
7eedccfa | 1319 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1320 | |
d7db6da9 FN |
1321 | /* Getting new symbols may change our opinion about |
1322 | what is frameless. */ | |
1323 | reinit_frame_cache (); | |
1324 | ||
7dcd53a0 TT |
1325 | if ((flags & SYMFILE_NO_READ) == 0) |
1326 | set_initial_language (); | |
1adeb98a FN |
1327 | } |
1328 | ||
1329 | void | |
1330 | symbol_file_clear (int from_tty) | |
1331 | { | |
1332 | if ((have_full_symbols () || have_partial_symbols ()) | |
1333 | && from_tty | |
0430b0d6 AS |
1334 | && (symfile_objfile |
1335 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1336 | objfile_name (symfile_objfile)) |
0430b0d6 | 1337 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1338 | error (_("Not confirmed.")); |
1adeb98a | 1339 | |
0133421a JK |
1340 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1341 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1342 | no_shared_libraries (NULL, from_tty); |
1343 | ||
0133421a JK |
1344 | free_all_objfiles (); |
1345 | ||
adb7f338 | 1346 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1347 | if (from_tty) |
1348 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1349 | } |
1350 | ||
5b5d99cf | 1351 | static int |
287ccc17 | 1352 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1353 | struct objfile *parent_objfile) |
5b5d99cf | 1354 | { |
904578ed JK |
1355 | unsigned long file_crc; |
1356 | int file_crc_p; | |
f1838a98 | 1357 | bfd *abfd; |
32a0e547 | 1358 | struct stat parent_stat, abfd_stat; |
904578ed | 1359 | int verified_as_different; |
32a0e547 JK |
1360 | |
1361 | /* Find a separate debug info file as if symbols would be present in | |
1362 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1363 | section can contain just the basename of PARENT_OBJFILE without any | |
1364 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1365 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1366 | |
4262abfb | 1367 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1368 | return 0; |
5b5d99cf | 1369 | |
2938e6cf | 1370 | abfd = gdb_bfd_open (name, gnutarget, -1); |
f1838a98 UW |
1371 | |
1372 | if (!abfd) | |
5b5d99cf JB |
1373 | return 0; |
1374 | ||
0ba1096a | 1375 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1376 | |
1377 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1378 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1379 | meaningful st_dev.) Files accessed from gdbservers that do not |
1380 | support the vFile:fstat packet will also have st_ino set to zero. | |
1381 | Do not indicate a duplicate library in either case. While there | |
1382 | is no guarantee that a system that provides meaningful inode | |
1383 | numbers will never set st_ino to zero, this is merely an | |
1384 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 JK |
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 | ||
0a93529c GB |
1412 | /* If the files could not be verified as different with |
1413 | bfd_stat then we need to calculate the parent's CRC | |
1414 | to verify whether the files are different or not. */ | |
904578ed | 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 | { | |
1db33378 PP |
1594 | /* For PR gdb/9538, try again with realpath (if different from the |
1595 | original). */ | |
1596 | ||
1597 | struct stat st_buf; | |
1598 | ||
4262abfb JK |
1599 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1600 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 PP |
1601 | { |
1602 | char *symlink_dir; | |
1603 | ||
4262abfb | 1604 | symlink_dir = lrealpath (objfile_name (objfile)); |
1db33378 PP |
1605 | if (symlink_dir != NULL) |
1606 | { | |
1607 | make_cleanup (xfree, symlink_dir); | |
1608 | terminate_after_last_dir_separator (symlink_dir); | |
1609 | if (strcmp (dir, symlink_dir) != 0) | |
1610 | { | |
1611 | /* Different directory, so try using it. */ | |
1612 | debugfile = find_separate_debug_file (symlink_dir, | |
1613 | symlink_dir, | |
1614 | debuglink, | |
1615 | crc32, | |
1616 | objfile); | |
1617 | } | |
1618 | } | |
1619 | } | |
1db33378 | 1620 | } |
aa28a74e | 1621 | |
1db33378 | 1622 | do_cleanups (cleanups); |
25522fae | 1623 | return debugfile; |
5b5d99cf JB |
1624 | } |
1625 | ||
c906108c SS |
1626 | /* This is the symbol-file command. Read the file, analyze its |
1627 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1628 | the command is rather bizarre: |
1629 | ||
1630 | 1. The function buildargv implements various quoting conventions | |
1631 | which are undocumented and have little or nothing in common with | |
1632 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1633 | ||
1634 | 2. Options are used, which are not generally used in GDB (perhaps | |
1635 | "set mapped on", "set readnow on" would be better) | |
1636 | ||
1637 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1638 | conventions (because it is confusing and inconvenient). */ |
1639 | ||
1640 | void | |
fba45db2 | 1641 | symbol_file_command (char *args, int from_tty) |
c906108c | 1642 | { |
c906108c SS |
1643 | dont_repeat (); |
1644 | ||
1645 | if (args == NULL) | |
1646 | { | |
1adeb98a | 1647 | symbol_file_clear (from_tty); |
c906108c SS |
1648 | } |
1649 | else | |
1650 | { | |
d1a41061 | 1651 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1652 | int flags = OBJF_USERLOADED; |
1653 | struct cleanup *cleanups; | |
1654 | char *name = NULL; | |
1655 | ||
7a292a7a | 1656 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1657 | while (*argv != NULL) |
1658 | { | |
78a4a9b9 AC |
1659 | if (strcmp (*argv, "-readnow") == 0) |
1660 | flags |= OBJF_READNOW; | |
1661 | else if (**argv == '-') | |
8a3fe4f8 | 1662 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1663 | else |
1664 | { | |
cb2f3a29 | 1665 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1666 | name = *argv; |
78a4a9b9 | 1667 | } |
cb2f3a29 | 1668 | |
c906108c SS |
1669 | argv++; |
1670 | } | |
1671 | ||
1672 | if (name == NULL) | |
cb2f3a29 MK |
1673 | error (_("no symbol file name was specified")); |
1674 | ||
c906108c SS |
1675 | do_cleanups (cleanups); |
1676 | } | |
1677 | } | |
1678 | ||
1679 | /* Set the initial language. | |
1680 | ||
cb2f3a29 MK |
1681 | FIXME: A better solution would be to record the language in the |
1682 | psymtab when reading partial symbols, and then use it (if known) to | |
1683 | set the language. This would be a win for formats that encode the | |
1684 | language in an easily discoverable place, such as DWARF. For | |
1685 | stabs, we can jump through hoops looking for specially named | |
1686 | symbols or try to intuit the language from the specific type of | |
1687 | stabs we find, but we can't do that until later when we read in | |
1688 | full symbols. */ | |
c906108c | 1689 | |
8b60591b | 1690 | void |
fba45db2 | 1691 | set_initial_language (void) |
c906108c | 1692 | { |
9e6c82ad | 1693 | enum language lang = main_language (); |
c906108c | 1694 | |
9e6c82ad | 1695 | if (lang == language_unknown) |
01f8c46d | 1696 | { |
bf6d8a91 | 1697 | char *name = main_name (); |
d12307c1 | 1698 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1699 | |
bf6d8a91 TT |
1700 | if (sym != NULL) |
1701 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1702 | } |
cb2f3a29 | 1703 | |
ccefe4c4 TT |
1704 | if (lang == language_unknown) |
1705 | { | |
1706 | /* Make C the default language */ | |
1707 | lang = language_c; | |
c906108c | 1708 | } |
ccefe4c4 TT |
1709 | |
1710 | set_language (lang); | |
1711 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1712 | } |
1713 | ||
cb2f3a29 MK |
1714 | /* Open the file specified by NAME and hand it off to BFD for |
1715 | preliminary analysis. Return a newly initialized bfd *, which | |
1716 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1717 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1718 | |
1719 | bfd * | |
97a41605 | 1720 | symfile_bfd_open (const char *name) |
c906108c SS |
1721 | { |
1722 | bfd *sym_bfd; | |
97a41605 GB |
1723 | int desc = -1; |
1724 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
c906108c | 1725 | |
97a41605 | 1726 | if (!is_target_filename (name)) |
f1838a98 | 1727 | { |
97a41605 | 1728 | char *expanded_name, *absolute_name; |
f1838a98 | 1729 | |
97a41605 | 1730 | expanded_name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c | 1731 | |
97a41605 GB |
1732 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1733 | desc = openp (getenv ("PATH"), | |
1734 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1735 | expanded_name, O_RDONLY | O_BINARY, &absolute_name); | |
608506ed | 1736 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1737 | if (desc < 0) |
1738 | { | |
1739 | char *exename = alloca (strlen (expanded_name) + 5); | |
433759f7 | 1740 | |
97a41605 GB |
1741 | strcat (strcpy (exename, expanded_name), ".exe"); |
1742 | desc = openp (getenv ("PATH"), | |
1743 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1744 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1745 | } | |
c906108c | 1746 | #endif |
97a41605 GB |
1747 | if (desc < 0) |
1748 | { | |
1749 | make_cleanup (xfree, expanded_name); | |
1750 | perror_with_name (expanded_name); | |
1751 | } | |
cb2f3a29 | 1752 | |
97a41605 GB |
1753 | xfree (expanded_name); |
1754 | make_cleanup (xfree, absolute_name); | |
1755 | name = absolute_name; | |
1756 | } | |
c906108c | 1757 | |
1c00ec6b | 1758 | sym_bfd = gdb_bfd_open (name, gnutarget, desc); |
c906108c | 1759 | if (!sym_bfd) |
faab9922 JK |
1760 | error (_("`%s': can't open to read symbols: %s."), name, |
1761 | bfd_errmsg (bfd_get_error ())); | |
97a41605 GB |
1762 | |
1763 | if (!gdb_bfd_has_target_filename (sym_bfd)) | |
1764 | bfd_set_cacheable (sym_bfd, 1); | |
c906108c SS |
1765 | |
1766 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1767 | { | |
f9a062ff | 1768 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1769 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1770 | bfd_errmsg (bfd_get_error ())); |
1771 | } | |
cb2f3a29 | 1772 | |
faab9922 JK |
1773 | do_cleanups (back_to); |
1774 | ||
cb2f3a29 | 1775 | return sym_bfd; |
c906108c SS |
1776 | } |
1777 | ||
cb2f3a29 MK |
1778 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1779 | the section was not found. */ | |
1780 | ||
0e931cf0 JB |
1781 | int |
1782 | get_section_index (struct objfile *objfile, char *section_name) | |
1783 | { | |
1784 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1785 | |
0e931cf0 JB |
1786 | if (sect) |
1787 | return sect->index; | |
1788 | else | |
1789 | return -1; | |
1790 | } | |
1791 | ||
c256e171 DE |
1792 | /* Link SF into the global symtab_fns list. |
1793 | FLAVOUR is the file format that SF handles. | |
1794 | Called on startup by the _initialize routine in each object file format | |
1795 | reader, to register information about each format the reader is prepared | |
1796 | to handle. */ | |
c906108c SS |
1797 | |
1798 | void | |
c256e171 | 1799 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1800 | { |
c256e171 DE |
1801 | registered_sym_fns fns = { flavour, sf }; |
1802 | ||
1803 | VEC_safe_push (registered_sym_fns, symtab_fns, &fns); | |
c906108c SS |
1804 | } |
1805 | ||
cb2f3a29 MK |
1806 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1807 | either returns or calls error(). The result is an initialized | |
1808 | struct sym_fns in the objfile structure, that contains cached | |
1809 | information about the symbol file. */ | |
c906108c | 1810 | |
00b5771c | 1811 | static const struct sym_fns * |
31d99776 | 1812 | find_sym_fns (bfd *abfd) |
c906108c | 1813 | { |
c256e171 | 1814 | registered_sym_fns *rsf; |
31d99776 | 1815 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1816 | int i; |
c906108c | 1817 | |
75245b24 MS |
1818 | if (our_flavour == bfd_target_srec_flavour |
1819 | || our_flavour == bfd_target_ihex_flavour | |
1820 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1821 | return NULL; /* No symbols. */ |
75245b24 | 1822 | |
c256e171 DE |
1823 | for (i = 0; VEC_iterate (registered_sym_fns, symtab_fns, i, rsf); ++i) |
1824 | if (our_flavour == rsf->sym_flavour) | |
1825 | return rsf->sym_fns; | |
cb2f3a29 | 1826 | |
8a3fe4f8 | 1827 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1828 | bfd_get_target (abfd)); |
c906108c SS |
1829 | } |
1830 | \f | |
cb2f3a29 | 1831 | |
c906108c SS |
1832 | /* This function runs the load command of our current target. */ |
1833 | ||
1834 | static void | |
fba45db2 | 1835 | load_command (char *arg, int from_tty) |
c906108c | 1836 | { |
5b3fca71 TT |
1837 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1838 | ||
e5cc9f32 JB |
1839 | dont_repeat (); |
1840 | ||
4487aabf PA |
1841 | /* The user might be reloading because the binary has changed. Take |
1842 | this opportunity to check. */ | |
1843 | reopen_exec_file (); | |
1844 | reread_symbols (); | |
1845 | ||
c906108c | 1846 | if (arg == NULL) |
1986bccd AS |
1847 | { |
1848 | char *parg; | |
1849 | int count = 0; | |
1850 | ||
1851 | parg = arg = get_exec_file (1); | |
1852 | ||
1853 | /* Count how many \ " ' tab space there are in the name. */ | |
1854 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1855 | { | |
1856 | parg++; | |
1857 | count++; | |
1858 | } | |
1859 | ||
1860 | if (count) | |
1861 | { | |
1862 | /* We need to quote this string so buildargv can pull it apart. */ | |
1863 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1864 | char *ptemp = temp; | |
1865 | char *prev; | |
1866 | ||
1867 | make_cleanup (xfree, temp); | |
1868 | ||
1869 | prev = parg = arg; | |
1870 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1871 | { | |
1872 | strncpy (ptemp, prev, parg - prev); | |
1873 | ptemp += parg - prev; | |
1874 | prev = parg++; | |
1875 | *ptemp++ = '\\'; | |
1876 | } | |
1877 | strcpy (ptemp, prev); | |
1878 | ||
1879 | arg = temp; | |
1880 | } | |
1881 | } | |
1882 | ||
c906108c | 1883 | target_load (arg, from_tty); |
2889e661 JB |
1884 | |
1885 | /* After re-loading the executable, we don't really know which | |
1886 | overlays are mapped any more. */ | |
1887 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1888 | |
1889 | do_cleanups (cleanup); | |
c906108c SS |
1890 | } |
1891 | ||
1892 | /* This version of "load" should be usable for any target. Currently | |
1893 | it is just used for remote targets, not inftarg.c or core files, | |
1894 | on the theory that only in that case is it useful. | |
1895 | ||
1896 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1897 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1898 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1899 | performance compares. */ | |
917317f4 | 1900 | |
917317f4 JM |
1901 | static int validate_download = 0; |
1902 | ||
e4f9b4d5 MS |
1903 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1904 | ||
1905 | static void | |
1906 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1907 | { | |
1908 | bfd_size_type *sum = data; | |
1909 | ||
2c500098 | 1910 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1911 | } |
1912 | ||
1913 | /* Opaque data for load_section_callback. */ | |
1914 | struct load_section_data { | |
f698ca8e | 1915 | CORE_ADDR load_offset; |
a76d924d DJ |
1916 | struct load_progress_data *progress_data; |
1917 | VEC(memory_write_request_s) *requests; | |
1918 | }; | |
1919 | ||
1920 | /* Opaque data for load_progress. */ | |
1921 | struct load_progress_data { | |
1922 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1923 | unsigned long write_count; |
1924 | unsigned long data_count; | |
1925 | bfd_size_type total_size; | |
a76d924d DJ |
1926 | }; |
1927 | ||
1928 | /* Opaque data for load_progress for a single section. */ | |
1929 | struct load_progress_section_data { | |
1930 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1931 | |
a76d924d | 1932 | /* Per-section data. */ |
cf7a04e8 DJ |
1933 | const char *section_name; |
1934 | ULONGEST section_sent; | |
1935 | ULONGEST section_size; | |
1936 | CORE_ADDR lma; | |
1937 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1938 | }; |
1939 | ||
a76d924d | 1940 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1941 | |
1942 | static void | |
1943 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1944 | { | |
a76d924d DJ |
1945 | struct load_progress_section_data *args = untyped_arg; |
1946 | struct load_progress_data *totals; | |
1947 | ||
1948 | if (args == NULL) | |
1949 | /* Writing padding data. No easy way to get at the cumulative | |
1950 | stats, so just ignore this. */ | |
1951 | return; | |
1952 | ||
1953 | totals = args->cumulative; | |
1954 | ||
1955 | if (bytes == 0 && args->section_sent == 0) | |
1956 | { | |
1957 | /* The write is just starting. Let the user know we've started | |
1958 | this section. */ | |
79a45e25 | 1959 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 | 1960 | args->section_name, hex_string (args->section_size), |
f5656ead | 1961 | paddress (target_gdbarch (), args->lma)); |
a76d924d DJ |
1962 | return; |
1963 | } | |
cf7a04e8 DJ |
1964 | |
1965 | if (validate_download) | |
1966 | { | |
1967 | /* Broken memories and broken monitors manifest themselves here | |
1968 | when bring new computers to life. This doubles already slow | |
1969 | downloads. */ | |
1970 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1971 | might add a verify_memory() method to the target vector and | |
1972 | then use that. remote.c could implement that method using | |
1973 | the ``qCRC'' packet. */ | |
1974 | gdb_byte *check = xmalloc (bytes); | |
1975 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1976 | ||
1977 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 1978 | error (_("Download verify read failed at %s"), |
f5656ead | 1979 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1980 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 1981 | error (_("Download verify compare failed at %s"), |
f5656ead | 1982 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
1983 | do_cleanups (verify_cleanups); |
1984 | } | |
a76d924d | 1985 | totals->data_count += bytes; |
cf7a04e8 DJ |
1986 | args->lma += bytes; |
1987 | args->buffer += bytes; | |
a76d924d | 1988 | totals->write_count += 1; |
cf7a04e8 | 1989 | args->section_sent += bytes; |
522002f9 | 1990 | if (check_quit_flag () |
cf7a04e8 DJ |
1991 | || (deprecated_ui_load_progress_hook != NULL |
1992 | && deprecated_ui_load_progress_hook (args->section_name, | |
1993 | args->section_sent))) | |
1994 | error (_("Canceled the download")); | |
1995 | ||
1996 | if (deprecated_show_load_progress != NULL) | |
1997 | deprecated_show_load_progress (args->section_name, | |
1998 | args->section_sent, | |
1999 | args->section_size, | |
a76d924d DJ |
2000 | totals->data_count, |
2001 | totals->total_size); | |
cf7a04e8 DJ |
2002 | } |
2003 | ||
e4f9b4d5 MS |
2004 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2005 | ||
2006 | static void | |
2007 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2008 | { | |
a76d924d | 2009 | struct memory_write_request *new_request; |
e4f9b4d5 | 2010 | struct load_section_data *args = data; |
a76d924d | 2011 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
2012 | bfd_size_type size = bfd_get_section_size (asec); |
2013 | gdb_byte *buffer; | |
cf7a04e8 | 2014 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2015 | |
cf7a04e8 DJ |
2016 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2017 | return; | |
e4f9b4d5 | 2018 | |
cf7a04e8 DJ |
2019 | if (size == 0) |
2020 | return; | |
e4f9b4d5 | 2021 | |
a76d924d DJ |
2022 | new_request = VEC_safe_push (memory_write_request_s, |
2023 | args->requests, NULL); | |
2024 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
8d749320 | 2025 | section_data = XCNEW (struct load_progress_section_data); |
a76d924d | 2026 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; |
3e43a32a MS |
2027 | new_request->end = new_request->begin + size; /* FIXME Should size |
2028 | be in instead? */ | |
a76d924d DJ |
2029 | new_request->data = xmalloc (size); |
2030 | new_request->baton = section_data; | |
cf7a04e8 | 2031 | |
a76d924d | 2032 | buffer = new_request->data; |
cf7a04e8 | 2033 | |
a76d924d DJ |
2034 | section_data->cumulative = args->progress_data; |
2035 | section_data->section_name = sect_name; | |
2036 | section_data->section_size = size; | |
2037 | section_data->lma = new_request->begin; | |
2038 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2039 | |
2040 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2041 | } |
2042 | ||
2043 | /* Clean up an entire memory request vector, including load | |
2044 | data and progress records. */ | |
cf7a04e8 | 2045 | |
a76d924d DJ |
2046 | static void |
2047 | clear_memory_write_data (void *arg) | |
2048 | { | |
2049 | VEC(memory_write_request_s) **vec_p = arg; | |
2050 | VEC(memory_write_request_s) *vec = *vec_p; | |
2051 | int i; | |
2052 | struct memory_write_request *mr; | |
cf7a04e8 | 2053 | |
a76d924d DJ |
2054 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2055 | { | |
2056 | xfree (mr->data); | |
2057 | xfree (mr->baton); | |
2058 | } | |
2059 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2060 | } |
2061 | ||
c906108c | 2062 | void |
9cbe5fff | 2063 | generic_load (const char *args, int from_tty) |
c906108c | 2064 | { |
c906108c | 2065 | bfd *loadfile_bfd; |
2b71414d | 2066 | struct timeval start_time, end_time; |
917317f4 | 2067 | char *filename; |
1986bccd | 2068 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2069 | struct load_section_data cbdata; |
a76d924d | 2070 | struct load_progress_data total_progress; |
79a45e25 | 2071 | struct ui_out *uiout = current_uiout; |
a76d924d | 2072 | |
e4f9b4d5 | 2073 | CORE_ADDR entry; |
1986bccd | 2074 | char **argv; |
e4f9b4d5 | 2075 | |
a76d924d DJ |
2076 | memset (&cbdata, 0, sizeof (cbdata)); |
2077 | memset (&total_progress, 0, sizeof (total_progress)); | |
2078 | cbdata.progress_data = &total_progress; | |
2079 | ||
2080 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2081 | |
d1a41061 PP |
2082 | if (args == NULL) |
2083 | error_no_arg (_("file to load")); | |
1986bccd | 2084 | |
d1a41061 | 2085 | argv = gdb_buildargv (args); |
1986bccd AS |
2086 | make_cleanup_freeargv (argv); |
2087 | ||
2088 | filename = tilde_expand (argv[0]); | |
2089 | make_cleanup (xfree, filename); | |
2090 | ||
2091 | if (argv[1] != NULL) | |
917317f4 | 2092 | { |
f698ca8e | 2093 | const char *endptr; |
ba5f2f8a | 2094 | |
f698ca8e | 2095 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2096 | |
2097 | /* If the last word was not a valid number then | |
2098 | treat it as a file name with spaces in. */ | |
2099 | if (argv[1] == endptr) | |
2100 | error (_("Invalid download offset:%s."), argv[1]); | |
2101 | ||
2102 | if (argv[2] != NULL) | |
2103 | error (_("Too many parameters.")); | |
917317f4 | 2104 | } |
c906108c | 2105 | |
c378eb4e | 2106 | /* Open the file for loading. */ |
1c00ec6b | 2107 | loadfile_bfd = gdb_bfd_open (filename, gnutarget, -1); |
c906108c SS |
2108 | if (loadfile_bfd == NULL) |
2109 | { | |
2110 | perror_with_name (filename); | |
2111 | return; | |
2112 | } | |
917317f4 | 2113 | |
f9a062ff | 2114 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2115 | |
c5aa993b | 2116 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2117 | { |
8a3fe4f8 | 2118 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2119 | bfd_errmsg (bfd_get_error ())); |
2120 | } | |
c5aa993b | 2121 | |
5417f6dc | 2122 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2123 | (void *) &total_progress.total_size); |
2124 | ||
2125 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2126 | |
2b71414d | 2127 | gettimeofday (&start_time, NULL); |
c906108c | 2128 | |
a76d924d DJ |
2129 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2130 | load_progress) != 0) | |
2131 | error (_("Load failed")); | |
c906108c | 2132 | |
2b71414d | 2133 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2134 | |
e4f9b4d5 | 2135 | entry = bfd_get_start_address (loadfile_bfd); |
8c2b9656 | 2136 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
e4f9b4d5 | 2137 | ui_out_text (uiout, "Start address "); |
f5656ead | 2138 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch (), entry)); |
e4f9b4d5 | 2139 | ui_out_text (uiout, ", load size "); |
a76d924d | 2140 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2141 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2142 | /* We were doing this in remote-mips.c, I suspect it is right |
2143 | for other targets too. */ | |
fb14de7b | 2144 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2145 | |
38963c97 DJ |
2146 | /* Reset breakpoints, now that we have changed the load image. For |
2147 | instance, breakpoints may have been set (or reset, by | |
2148 | post_create_inferior) while connected to the target but before we | |
2149 | loaded the program. In that case, the prologue analyzer could | |
2150 | have read instructions from the target to find the right | |
2151 | breakpoint locations. Loading has changed the contents of that | |
2152 | memory. */ | |
2153 | ||
2154 | breakpoint_re_set (); | |
2155 | ||
7ca9f392 AC |
2156 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2157 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2158 | was commented out), making the call confuses GDB if more than one | |
2159 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2160 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2161 | |
a76d924d DJ |
2162 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2163 | total_progress.write_count, | |
2164 | &start_time, &end_time); | |
c906108c SS |
2165 | |
2166 | do_cleanups (old_cleanups); | |
2167 | } | |
2168 | ||
c378eb4e | 2169 | /* Report how fast the transfer went. */ |
c906108c | 2170 | |
917317f4 | 2171 | void |
d9fcf2fb | 2172 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2173 | unsigned long data_count, |
2174 | unsigned long write_count, | |
2b71414d DJ |
2175 | const struct timeval *start_time, |
2176 | const struct timeval *end_time) | |
917317f4 | 2177 | { |
9f43d28c | 2178 | ULONGEST time_count; |
79a45e25 | 2179 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2180 | |
2181 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2182 | accuracy and overflow. */ | |
2183 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2184 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2185 | ||
8b93c638 JM |
2186 | ui_out_text (uiout, "Transfer rate: "); |
2187 | if (time_count > 0) | |
2188 | { | |
9f43d28c DJ |
2189 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2190 | ||
2191 | if (ui_out_is_mi_like_p (uiout)) | |
2192 | { | |
2193 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2194 | ui_out_text (uiout, " bits/sec"); | |
2195 | } | |
2196 | else if (rate < 1024) | |
2197 | { | |
2198 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2199 | ui_out_text (uiout, " bytes/sec"); | |
2200 | } | |
2201 | else | |
2202 | { | |
2203 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2204 | ui_out_text (uiout, " KB/sec"); | |
2205 | } | |
8b93c638 JM |
2206 | } |
2207 | else | |
2208 | { | |
ba5f2f8a | 2209 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2210 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2211 | } |
2212 | if (write_count > 0) | |
2213 | { | |
2214 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2215 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2216 | ui_out_text (uiout, " bytes/write"); |
2217 | } | |
2218 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2219 | } |
2220 | ||
2221 | /* This function allows the addition of incrementally linked object files. | |
2222 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2223 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2224 | special case syntax for the rombug target (Rombug is the boot | |
2225 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2226 | rombug case, the user doesn't need to supply a text address, | |
2227 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2228 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2229 | |
c906108c | 2230 | static void |
fba45db2 | 2231 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2232 | { |
5af949e3 | 2233 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2234 | char *filename = NULL; |
d03de421 | 2235 | int flags = OBJF_USERLOADED | OBJF_SHARED; |
c906108c | 2236 | char *arg; |
db162d44 | 2237 | int section_index = 0; |
2acceee2 JM |
2238 | int argcnt = 0; |
2239 | int sec_num = 0; | |
2240 | int i; | |
db162d44 EZ |
2241 | int expecting_sec_name = 0; |
2242 | int expecting_sec_addr = 0; | |
5b96932b | 2243 | char **argv; |
76ad5e1e | 2244 | struct objfile *objf; |
db162d44 | 2245 | |
a39a16c4 | 2246 | struct sect_opt |
2acceee2 | 2247 | { |
2acceee2 JM |
2248 | char *name; |
2249 | char *value; | |
a39a16c4 | 2250 | }; |
db162d44 | 2251 | |
a39a16c4 MM |
2252 | struct section_addr_info *section_addrs; |
2253 | struct sect_opt *sect_opts = NULL; | |
2254 | size_t num_sect_opts = 0; | |
3017564a | 2255 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2256 | |
a39a16c4 | 2257 | num_sect_opts = 16; |
8d749320 | 2258 | sect_opts = XNEWVEC (struct sect_opt, num_sect_opts); |
a39a16c4 | 2259 | |
c906108c SS |
2260 | dont_repeat (); |
2261 | ||
2262 | if (args == NULL) | |
8a3fe4f8 | 2263 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2264 | |
d1a41061 | 2265 | argv = gdb_buildargv (args); |
5b96932b | 2266 | make_cleanup_freeargv (argv); |
db162d44 | 2267 | |
5b96932b AS |
2268 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2269 | { | |
c378eb4e | 2270 | /* Process the argument. */ |
db162d44 | 2271 | if (argcnt == 0) |
c906108c | 2272 | { |
c378eb4e | 2273 | /* The first argument is the file name. */ |
db162d44 | 2274 | filename = tilde_expand (arg); |
3017564a | 2275 | make_cleanup (xfree, filename); |
c906108c | 2276 | } |
41dc8db8 MB |
2277 | else if (argcnt == 1) |
2278 | { | |
2279 | /* The second argument is always the text address at which | |
2280 | to load the program. */ | |
2281 | sect_opts[section_index].name = ".text"; | |
2282 | sect_opts[section_index].value = arg; | |
2283 | if (++section_index >= num_sect_opts) | |
2284 | { | |
2285 | num_sect_opts *= 2; | |
2286 | sect_opts = ((struct sect_opt *) | |
2287 | xrealloc (sect_opts, | |
2288 | num_sect_opts | |
2289 | * sizeof (struct sect_opt))); | |
2290 | } | |
2291 | } | |
db162d44 | 2292 | else |
41dc8db8 MB |
2293 | { |
2294 | /* It's an option (starting with '-') or it's an argument | |
2295 | to an option. */ | |
41dc8db8 MB |
2296 | if (expecting_sec_name) |
2297 | { | |
2298 | sect_opts[section_index].name = arg; | |
2299 | expecting_sec_name = 0; | |
2300 | } | |
2301 | else if (expecting_sec_addr) | |
2302 | { | |
2303 | sect_opts[section_index].value = arg; | |
2304 | expecting_sec_addr = 0; | |
2305 | if (++section_index >= num_sect_opts) | |
2306 | { | |
2307 | num_sect_opts *= 2; | |
2308 | sect_opts = ((struct sect_opt *) | |
2309 | xrealloc (sect_opts, | |
2310 | num_sect_opts | |
2311 | * sizeof (struct sect_opt))); | |
2312 | } | |
2313 | } | |
2314 | else if (strcmp (arg, "-readnow") == 0) | |
2315 | flags |= OBJF_READNOW; | |
2316 | else if (strcmp (arg, "-s") == 0) | |
2317 | { | |
2318 | expecting_sec_name = 1; | |
2319 | expecting_sec_addr = 1; | |
2320 | } | |
2321 | else | |
2322 | error (_("USAGE: add-symbol-file <filename> <textaddress>" | |
2323 | " [-readnow] [-s <secname> <addr>]*")); | |
2324 | } | |
c906108c | 2325 | } |
c906108c | 2326 | |
927890d0 JB |
2327 | /* This command takes at least two arguments. The first one is a |
2328 | filename, and the second is the address where this file has been | |
2329 | loaded. Abort now if this address hasn't been provided by the | |
2330 | user. */ | |
2331 | if (section_index < 1) | |
2332 | error (_("The address where %s has been loaded is missing"), filename); | |
2333 | ||
c378eb4e | 2334 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2335 | a sect_addr_info structure to be passed around to other |
2336 | functions. We have to split this up into separate print | |
bb599908 | 2337 | statements because hex_string returns a local static |
c378eb4e | 2338 | string. */ |
5417f6dc | 2339 | |
a3f17187 | 2340 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2341 | section_addrs = alloc_section_addr_info (section_index); |
2342 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2343 | for (i = 0; i < section_index; i++) |
c906108c | 2344 | { |
db162d44 EZ |
2345 | CORE_ADDR addr; |
2346 | char *val = sect_opts[i].value; | |
2347 | char *sec = sect_opts[i].name; | |
5417f6dc | 2348 | |
ae822768 | 2349 | addr = parse_and_eval_address (val); |
db162d44 | 2350 | |
db162d44 | 2351 | /* Here we store the section offsets in the order they were |
c378eb4e | 2352 | entered on the command line. */ |
a39a16c4 MM |
2353 | section_addrs->other[sec_num].name = sec; |
2354 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2355 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2356 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2357 | sec_num++; |
2358 | ||
5417f6dc | 2359 | /* The object's sections are initialized when a |
db162d44 | 2360 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2361 | This happens in reread_symbols. |
db162d44 EZ |
2362 | At this point, we don't know what file type this is, |
2363 | so we can't determine what section names are valid. */ | |
2acceee2 | 2364 | } |
d76488d8 | 2365 | section_addrs->num_sections = sec_num; |
db162d44 | 2366 | |
2acceee2 | 2367 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2368 | error (_("Not confirmed.")); |
c906108c | 2369 | |
76ad5e1e NB |
2370 | objf = symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2371 | section_addrs, flags); | |
2372 | ||
2373 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2374 | |
2375 | /* Getting new symbols may change our opinion about what is | |
2376 | frameless. */ | |
2377 | reinit_frame_cache (); | |
db162d44 | 2378 | do_cleanups (my_cleanups); |
c906108c SS |
2379 | } |
2380 | \f | |
70992597 | 2381 | |
63644780 NB |
2382 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2383 | ||
2384 | static void | |
2385 | remove_symbol_file_command (char *args, int from_tty) | |
2386 | { | |
2387 | char **argv; | |
2388 | struct objfile *objf = NULL; | |
2389 | struct cleanup *my_cleanups; | |
2390 | struct program_space *pspace = current_program_space; | |
2391 | struct gdbarch *gdbarch = get_current_arch (); | |
2392 | ||
2393 | dont_repeat (); | |
2394 | ||
2395 | if (args == NULL) | |
2396 | error (_("remove-symbol-file: no symbol file provided")); | |
2397 | ||
2398 | my_cleanups = make_cleanup (null_cleanup, NULL); | |
2399 | ||
2400 | argv = gdb_buildargv (args); | |
2401 | ||
2402 | if (strcmp (argv[0], "-a") == 0) | |
2403 | { | |
2404 | /* Interpret the next argument as an address. */ | |
2405 | CORE_ADDR addr; | |
2406 | ||
2407 | if (argv[1] == NULL) | |
2408 | error (_("Missing address argument")); | |
2409 | ||
2410 | if (argv[2] != NULL) | |
2411 | error (_("Junk after %s"), argv[1]); | |
2412 | ||
2413 | addr = parse_and_eval_address (argv[1]); | |
2414 | ||
2415 | ALL_OBJFILES (objf) | |
2416 | { | |
d03de421 PA |
2417 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2418 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2419 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2420 | break; | |
2421 | } | |
2422 | } | |
2423 | else if (argv[0] != NULL) | |
2424 | { | |
2425 | /* Interpret the current argument as a file name. */ | |
2426 | char *filename; | |
2427 | ||
2428 | if (argv[1] != NULL) | |
2429 | error (_("Junk after %s"), argv[0]); | |
2430 | ||
2431 | filename = tilde_expand (argv[0]); | |
2432 | make_cleanup (xfree, filename); | |
2433 | ||
2434 | ALL_OBJFILES (objf) | |
2435 | { | |
d03de421 PA |
2436 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2437 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2438 | && objf->pspace == pspace |
2439 | && filename_cmp (filename, objfile_name (objf)) == 0) | |
2440 | break; | |
2441 | } | |
2442 | } | |
2443 | ||
2444 | if (objf == NULL) | |
2445 | error (_("No symbol file found")); | |
2446 | ||
2447 | if (from_tty | |
2448 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2449 | objfile_name (objf))) | |
2450 | error (_("Not confirmed.")); | |
2451 | ||
2452 | free_objfile (objf); | |
2453 | clear_symtab_users (0); | |
2454 | ||
2455 | do_cleanups (my_cleanups); | |
2456 | } | |
2457 | ||
4ac39b97 JK |
2458 | typedef struct objfile *objfilep; |
2459 | ||
2460 | DEF_VEC_P (objfilep); | |
2461 | ||
c906108c | 2462 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2463 | |
c906108c | 2464 | void |
fba45db2 | 2465 | reread_symbols (void) |
c906108c SS |
2466 | { |
2467 | struct objfile *objfile; | |
2468 | long new_modtime; | |
c906108c SS |
2469 | struct stat new_statbuf; |
2470 | int res; | |
4ac39b97 JK |
2471 | VEC (objfilep) *new_objfiles = NULL; |
2472 | struct cleanup *all_cleanups; | |
2473 | ||
2474 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2475 | |
2476 | /* With the addition of shared libraries, this should be modified, | |
2477 | the load time should be saved in the partial symbol tables, since | |
2478 | different tables may come from different source files. FIXME. | |
2479 | This routine should then walk down each partial symbol table | |
c378eb4e | 2480 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2481 | |
c5aa993b JM |
2482 | for (objfile = object_files; objfile; objfile = objfile->next) |
2483 | { | |
9cce227f TG |
2484 | if (objfile->obfd == NULL) |
2485 | continue; | |
2486 | ||
2487 | /* Separate debug objfiles are handled in the main objfile. */ | |
2488 | if (objfile->separate_debug_objfile_backlink) | |
2489 | continue; | |
2490 | ||
02aeec7b JB |
2491 | /* If this object is from an archive (what you usually create with |
2492 | `ar', often called a `static library' on most systems, though | |
2493 | a `shared library' on AIX is also an archive), then you should | |
2494 | stat on the archive name, not member name. */ | |
9cce227f TG |
2495 | if (objfile->obfd->my_archive) |
2496 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2497 | else | |
4262abfb | 2498 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2499 | if (res != 0) |
2500 | { | |
c378eb4e | 2501 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2502 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2503 | objfile_name (objfile)); |
9cce227f TG |
2504 | continue; |
2505 | } | |
2506 | new_modtime = new_statbuf.st_mtime; | |
2507 | if (new_modtime != objfile->mtime) | |
2508 | { | |
2509 | struct cleanup *old_cleanups; | |
2510 | struct section_offsets *offsets; | |
2511 | int num_offsets; | |
24ba069a | 2512 | char *original_name; |
9cce227f TG |
2513 | |
2514 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2515 | objfile_name (objfile)); |
9cce227f TG |
2516 | |
2517 | /* There are various functions like symbol_file_add, | |
2518 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2519 | appear to do what we want. But they have various other | |
2520 | effects which we *don't* want. So we just do stuff | |
2521 | ourselves. We don't worry about mapped files (for one thing, | |
2522 | any mapped file will be out of date). */ | |
2523 | ||
2524 | /* If we get an error, blow away this objfile (not sure if | |
2525 | that is the correct response for things like shared | |
2526 | libraries). */ | |
2527 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2528 | /* We need to do this whenever any symbols go away. */ | |
2529 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2530 | ||
0ba1096a KT |
2531 | if (exec_bfd != NULL |
2532 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2533 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2534 | { |
2535 | /* Reload EXEC_BFD without asking anything. */ | |
2536 | ||
2537 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2538 | } | |
2539 | ||
f6eeced0 JK |
2540 | /* Keep the calls order approx. the same as in free_objfile. */ |
2541 | ||
2542 | /* Free the separate debug objfiles. It will be | |
2543 | automatically recreated by sym_read. */ | |
2544 | free_objfile_separate_debug (objfile); | |
2545 | ||
2546 | /* Remove any references to this objfile in the global | |
2547 | value lists. */ | |
2548 | preserve_values (objfile); | |
2549 | ||
2550 | /* Nuke all the state that we will re-read. Much of the following | |
2551 | code which sets things to NULL really is necessary to tell | |
2552 | other parts of GDB that there is nothing currently there. | |
2553 | ||
2554 | Try to keep the freeing order compatible with free_objfile. */ | |
2555 | ||
2556 | if (objfile->sf != NULL) | |
2557 | { | |
2558 | (*objfile->sf->sym_finish) (objfile); | |
2559 | } | |
2560 | ||
2561 | clear_objfile_data (objfile); | |
2562 | ||
e1507e95 | 2563 | /* Clean up any state BFD has sitting around. */ |
a4453b7e TT |
2564 | { |
2565 | struct bfd *obfd = objfile->obfd; | |
d3846e71 | 2566 | char *obfd_filename; |
a4453b7e TT |
2567 | |
2568 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2569 | /* Open the new BFD before freeing the old one, so that | |
2570 | the filename remains live. */ | |
2938e6cf | 2571 | objfile->obfd = gdb_bfd_open (obfd_filename, gnutarget, -1); |
e1507e95 TT |
2572 | if (objfile->obfd == NULL) |
2573 | { | |
2574 | /* We have to make a cleanup and error here, rather | |
2575 | than erroring later, because once we unref OBFD, | |
2576 | OBFD_FILENAME will be freed. */ | |
2577 | make_cleanup_bfd_unref (obfd); | |
2578 | error (_("Can't open %s to read symbols."), obfd_filename); | |
2579 | } | |
a4453b7e TT |
2580 | gdb_bfd_unref (obfd); |
2581 | } | |
2582 | ||
24ba069a JK |
2583 | original_name = xstrdup (objfile->original_name); |
2584 | make_cleanup (xfree, original_name); | |
2585 | ||
9cce227f TG |
2586 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2587 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2588 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2589 | bfd_errmsg (bfd_get_error ())); |
2590 | ||
2591 | /* Save the offsets, we will nuke them with the rest of the | |
2592 | objfile_obstack. */ | |
2593 | num_offsets = objfile->num_sections; | |
2594 | offsets = ((struct section_offsets *) | |
2595 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2596 | memcpy (offsets, objfile->section_offsets, | |
2597 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2598 | ||
9cce227f TG |
2599 | /* FIXME: Do we have to free a whole linked list, or is this |
2600 | enough? */ | |
2601 | if (objfile->global_psymbols.list) | |
2602 | xfree (objfile->global_psymbols.list); | |
2603 | memset (&objfile->global_psymbols, 0, | |
2604 | sizeof (objfile->global_psymbols)); | |
2605 | if (objfile->static_psymbols.list) | |
2606 | xfree (objfile->static_psymbols.list); | |
2607 | memset (&objfile->static_psymbols, 0, | |
2608 | sizeof (objfile->static_psymbols)); | |
2609 | ||
c378eb4e | 2610 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2611 | psymbol_bcache_free (objfile->psymbol_cache); |
2612 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f TG |
2613 | obstack_free (&objfile->objfile_obstack, 0); |
2614 | objfile->sections = NULL; | |
43f3e411 | 2615 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2616 | objfile->psymtabs = NULL; |
2617 | objfile->psymtabs_addrmap = NULL; | |
2618 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2619 | objfile->template_symbols = NULL; |
9cce227f | 2620 | |
9cce227f TG |
2621 | /* obstack_init also initializes the obstack so it is |
2622 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2623 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2624 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2625 | |
846060df JB |
2626 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2627 | data on the objfile's obstack (if sharing data across | |
2628 | multiple users is not possible), so it's important to | |
2629 | do it *after* the obstack has been initialized. */ | |
2630 | set_objfile_per_bfd (objfile); | |
2631 | ||
24ba069a JK |
2632 | objfile->original_name = obstack_copy0 (&objfile->objfile_obstack, |
2633 | original_name, | |
2634 | strlen (original_name)); | |
2635 | ||
779bd270 DE |
2636 | /* Reset the sym_fns pointer. The ELF reader can change it |
2637 | based on whether .gdb_index is present, and we need it to | |
2638 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2639 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2640 | |
d82ea6a8 | 2641 | build_objfile_section_table (objfile); |
9cce227f TG |
2642 | terminate_minimal_symbol_table (objfile); |
2643 | ||
2644 | /* We use the same section offsets as from last time. I'm not | |
2645 | sure whether that is always correct for shared libraries. */ | |
2646 | objfile->section_offsets = (struct section_offsets *) | |
2647 | obstack_alloc (&objfile->objfile_obstack, | |
2648 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2649 | memcpy (objfile->section_offsets, offsets, | |
2650 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2651 | objfile->num_sections = num_offsets; | |
2652 | ||
2653 | /* What the hell is sym_new_init for, anyway? The concept of | |
2654 | distinguishing between the main file and additional files | |
2655 | in this way seems rather dubious. */ | |
2656 | if (objfile == symfile_objfile) | |
c906108c | 2657 | { |
9cce227f | 2658 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2659 | } |
9cce227f TG |
2660 | |
2661 | (*objfile->sf->sym_init) (objfile); | |
2662 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2663 | |
2664 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2665 | read_symbols (objfile, 0); | |
b11896a5 | 2666 | |
9cce227f | 2667 | if (!objfile_has_symbols (objfile)) |
c906108c | 2668 | { |
9cce227f TG |
2669 | wrap_here (""); |
2670 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2671 | wrap_here (""); | |
c5aa993b | 2672 | } |
9cce227f TG |
2673 | |
2674 | /* We're done reading the symbol file; finish off complaints. */ | |
2675 | clear_complaints (&symfile_complaints, 0, 1); | |
2676 | ||
2677 | /* Getting new symbols may change our opinion about what is | |
2678 | frameless. */ | |
2679 | ||
2680 | reinit_frame_cache (); | |
2681 | ||
2682 | /* Discard cleanups as symbol reading was successful. */ | |
2683 | discard_cleanups (old_cleanups); | |
2684 | ||
2685 | /* If the mtime has changed between the time we set new_modtime | |
2686 | and now, we *want* this to be out of date, so don't call stat | |
2687 | again now. */ | |
2688 | objfile->mtime = new_modtime; | |
9cce227f | 2689 | init_entry_point_info (objfile); |
4ac39b97 JK |
2690 | |
2691 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2692 | } |
2693 | } | |
c906108c | 2694 | |
4ac39b97 | 2695 | if (new_objfiles) |
ea53e89f | 2696 | { |
4ac39b97 JK |
2697 | int ix; |
2698 | ||
ff3536bc UW |
2699 | /* Notify objfiles that we've modified objfile sections. */ |
2700 | objfiles_changed (); | |
2701 | ||
c1e56572 | 2702 | clear_symtab_users (0); |
4ac39b97 JK |
2703 | |
2704 | /* clear_objfile_data for each objfile was called before freeing it and | |
2705 | observer_notify_new_objfile (NULL) has been called by | |
2706 | clear_symtab_users above. Notify the new files now. */ | |
2707 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2708 | observer_notify_new_objfile (objfile); | |
2709 | ||
ea53e89f JB |
2710 | /* At least one objfile has changed, so we can consider that |
2711 | the executable we're debugging has changed too. */ | |
781b42b0 | 2712 | observer_notify_executable_changed (); |
ea53e89f | 2713 | } |
4ac39b97 JK |
2714 | |
2715 | do_cleanups (all_cleanups); | |
c906108c | 2716 | } |
c906108c SS |
2717 | \f |
2718 | ||
c5aa993b JM |
2719 | typedef struct |
2720 | { | |
2721 | char *ext; | |
c906108c | 2722 | enum language lang; |
c5aa993b JM |
2723 | } |
2724 | filename_language; | |
c906108c | 2725 | |
c5aa993b | 2726 | static filename_language *filename_language_table; |
c906108c SS |
2727 | static int fl_table_size, fl_table_next; |
2728 | ||
2729 | static void | |
fba45db2 | 2730 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2731 | { |
2732 | if (fl_table_next >= fl_table_size) | |
2733 | { | |
2734 | fl_table_size += 10; | |
5417f6dc | 2735 | filename_language_table = |
25bf3106 PM |
2736 | xrealloc (filename_language_table, |
2737 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2738 | } |
2739 | ||
4fcf66da | 2740 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2741 | filename_language_table[fl_table_next].lang = lang; |
2742 | fl_table_next++; | |
2743 | } | |
2744 | ||
2745 | static char *ext_args; | |
920d2a44 AC |
2746 | static void |
2747 | show_ext_args (struct ui_file *file, int from_tty, | |
2748 | struct cmd_list_element *c, const char *value) | |
2749 | { | |
3e43a32a MS |
2750 | fprintf_filtered (file, |
2751 | _("Mapping between filename extension " | |
2752 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2753 | value); |
2754 | } | |
c906108c SS |
2755 | |
2756 | static void | |
26c41df3 | 2757 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2758 | { |
2759 | int i; | |
2760 | char *cp = ext_args; | |
2761 | enum language lang; | |
2762 | ||
c378eb4e | 2763 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2764 | if (*cp != '.') |
8a3fe4f8 | 2765 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2766 | |
2767 | /* Find end of first arg. */ | |
c5aa993b | 2768 | while (*cp && !isspace (*cp)) |
c906108c SS |
2769 | cp++; |
2770 | ||
2771 | if (*cp == '\0') | |
3e43a32a MS |
2772 | error (_("'%s': two arguments required -- " |
2773 | "filename extension and language"), | |
c906108c SS |
2774 | ext_args); |
2775 | ||
c378eb4e | 2776 | /* Null-terminate first arg. */ |
c5aa993b | 2777 | *cp++ = '\0'; |
c906108c SS |
2778 | |
2779 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2780 | cp = skip_spaces (cp); |
c906108c SS |
2781 | |
2782 | if (*cp == '\0') | |
3e43a32a MS |
2783 | error (_("'%s': two arguments required -- " |
2784 | "filename extension and language"), | |
c906108c SS |
2785 | ext_args); |
2786 | ||
2787 | /* Lookup the language from among those we know. */ | |
2788 | lang = language_enum (cp); | |
2789 | ||
2790 | /* Now lookup the filename extension: do we already know it? */ | |
2791 | for (i = 0; i < fl_table_next; i++) | |
2792 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2793 | break; | |
2794 | ||
2795 | if (i >= fl_table_next) | |
2796 | { | |
c378eb4e | 2797 | /* New file extension. */ |
c906108c SS |
2798 | add_filename_language (ext_args, lang); |
2799 | } | |
2800 | else | |
2801 | { | |
c378eb4e | 2802 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2803 | |
2804 | /* if (from_tty) */ | |
2805 | /* query ("Really make files of type %s '%s'?", */ | |
2806 | /* ext_args, language_str (lang)); */ | |
2807 | ||
b8c9b27d | 2808 | xfree (filename_language_table[i].ext); |
4fcf66da | 2809 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2810 | filename_language_table[i].lang = lang; |
2811 | } | |
2812 | } | |
2813 | ||
2814 | static void | |
fba45db2 | 2815 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2816 | { |
2817 | int i; | |
2818 | ||
a3f17187 | 2819 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2820 | printf_filtered ("\n\n"); |
2821 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2822 | printf_filtered ("\t%s\t- %s\n", |
2823 | filename_language_table[i].ext, | |
c906108c SS |
2824 | language_str (filename_language_table[i].lang)); |
2825 | } | |
2826 | ||
2827 | static void | |
fba45db2 | 2828 | init_filename_language_table (void) |
c906108c | 2829 | { |
c378eb4e | 2830 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2831 | { |
2832 | fl_table_size = 20; | |
2833 | fl_table_next = 0; | |
8d749320 SM |
2834 | filename_language_table = XNEWVEC (filename_language, fl_table_size); |
2835 | ||
c5aa993b | 2836 | add_filename_language (".c", language_c); |
6aecb9c2 | 2837 | add_filename_language (".d", language_d); |
c5aa993b JM |
2838 | add_filename_language (".C", language_cplus); |
2839 | add_filename_language (".cc", language_cplus); | |
2840 | add_filename_language (".cp", language_cplus); | |
2841 | add_filename_language (".cpp", language_cplus); | |
2842 | add_filename_language (".cxx", language_cplus); | |
2843 | add_filename_language (".c++", language_cplus); | |
2844 | add_filename_language (".java", language_java); | |
c906108c | 2845 | add_filename_language (".class", language_java); |
da2cf7e0 | 2846 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2847 | add_filename_language (".f", language_fortran); |
2848 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2849 | add_filename_language (".for", language_fortran); |
2850 | add_filename_language (".FOR", language_fortran); | |
2851 | add_filename_language (".ftn", language_fortran); | |
2852 | add_filename_language (".FTN", language_fortran); | |
2853 | add_filename_language (".fpp", language_fortran); | |
2854 | add_filename_language (".FPP", language_fortran); | |
2855 | add_filename_language (".f90", language_fortran); | |
2856 | add_filename_language (".F90", language_fortran); | |
2857 | add_filename_language (".f95", language_fortran); | |
2858 | add_filename_language (".F95", language_fortran); | |
2859 | add_filename_language (".f03", language_fortran); | |
2860 | add_filename_language (".F03", language_fortran); | |
2861 | add_filename_language (".f08", language_fortran); | |
2862 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2863 | add_filename_language (".s", language_asm); |
aa707ed0 | 2864 | add_filename_language (".sx", language_asm); |
c5aa993b | 2865 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2866 | add_filename_language (".pas", language_pascal); |
2867 | add_filename_language (".p", language_pascal); | |
2868 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2869 | add_filename_language (".adb", language_ada); |
2870 | add_filename_language (".ads", language_ada); | |
2871 | add_filename_language (".a", language_ada); | |
2872 | add_filename_language (".ada", language_ada); | |
dde59185 | 2873 | add_filename_language (".dg", language_ada); |
c906108c SS |
2874 | } |
2875 | } | |
2876 | ||
2877 | enum language | |
dd786858 | 2878 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2879 | { |
2880 | int i; | |
2881 | char *cp; | |
2882 | ||
2883 | if (filename != NULL) | |
2884 | if ((cp = strrchr (filename, '.')) != NULL) | |
2885 | for (i = 0; i < fl_table_next; i++) | |
2886 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2887 | return filename_language_table[i].lang; | |
2888 | ||
2889 | return language_unknown; | |
2890 | } | |
2891 | \f | |
43f3e411 DE |
2892 | /* Allocate and initialize a new symbol table. |
2893 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2894 | |
2895 | struct symtab * | |
43f3e411 | 2896 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2897 | { |
43f3e411 DE |
2898 | struct objfile *objfile = cust->objfile; |
2899 | struct symtab *symtab | |
2900 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2901 | |
21ea9eec TT |
2902 | symtab->filename = bcache (filename, strlen (filename) + 1, |
2903 | objfile->per_bfd->filename_cache); | |
c5aa993b JM |
2904 | symtab->fullname = NULL; |
2905 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2906 | |
db0fec5c DE |
2907 | /* This can be very verbose with lots of headers. |
2908 | Only print at higher debug levels. */ | |
2909 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2910 | { |
2911 | /* Be a bit clever with debugging messages, and don't print objfile | |
2912 | every time, only when it changes. */ | |
2913 | static char *last_objfile_name = NULL; | |
2914 | ||
2915 | if (last_objfile_name == NULL | |
4262abfb | 2916 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2917 | { |
2918 | xfree (last_objfile_name); | |
4262abfb | 2919 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2920 | fprintf_unfiltered (gdb_stdlog, |
2921 | "Creating one or more symtabs for objfile %s ...\n", | |
2922 | last_objfile_name); | |
2923 | } | |
2924 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2925 | "Created symtab %s for module %s.\n", |
2926 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2927 | } |
2928 | ||
43f3e411 DE |
2929 | /* Add it to CUST's list of symtabs. */ |
2930 | if (cust->filetabs == NULL) | |
2931 | { | |
2932 | cust->filetabs = symtab; | |
2933 | cust->last_filetab = symtab; | |
2934 | } | |
2935 | else | |
2936 | { | |
2937 | cust->last_filetab->next = symtab; | |
2938 | cust->last_filetab = symtab; | |
2939 | } | |
2940 | ||
2941 | /* Backlink to the containing compunit symtab. */ | |
2942 | symtab->compunit_symtab = cust; | |
2943 | ||
2944 | return symtab; | |
2945 | } | |
2946 | ||
2947 | /* Allocate and initialize a new compunit. | |
2948 | NAME is the name of the main source file, if there is one, or some | |
2949 | descriptive text if there are no source files. */ | |
2950 | ||
2951 | struct compunit_symtab * | |
2952 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2953 | { | |
2954 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2955 | struct compunit_symtab); | |
2956 | const char *saved_name; | |
2957 | ||
2958 | cu->objfile = objfile; | |
2959 | ||
2960 | /* The name we record here is only for display/debugging purposes. | |
2961 | Just save the basename to avoid path issues (too long for display, | |
2962 | relative vs absolute, etc.). */ | |
2963 | saved_name = lbasename (name); | |
2964 | cu->name = obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2965 | strlen (saved_name)); | |
2966 | ||
2967 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2968 | ||
2969 | if (symtab_create_debug) | |
2970 | { | |
2971 | fprintf_unfiltered (gdb_stdlog, | |
2972 | "Created compunit symtab %s for %s.\n", | |
2973 | host_address_to_string (cu), | |
2974 | cu->name); | |
2975 | } | |
2976 | ||
2977 | return cu; | |
2978 | } | |
2979 | ||
2980 | /* Hook CU to the objfile it comes from. */ | |
2981 | ||
2982 | void | |
2983 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2984 | { | |
2985 | cu->next = cu->objfile->compunit_symtabs; | |
2986 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2987 | } |
c906108c | 2988 | \f |
c5aa993b | 2989 | |
c906108c | 2990 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2991 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2992 | |
2993 | void | |
c1e56572 | 2994 | clear_symtab_users (int add_flags) |
c906108c SS |
2995 | { |
2996 | /* Someday, we should do better than this, by only blowing away | |
2997 | the things that really need to be blown. */ | |
c0501be5 DJ |
2998 | |
2999 | /* Clear the "current" symtab first, because it is no longer valid. | |
3000 | breakpoint_re_set may try to access the current symtab. */ | |
3001 | clear_current_source_symtab_and_line (); | |
3002 | ||
c906108c | 3003 | clear_displays (); |
1bfeeb0f | 3004 | clear_last_displayed_sal (); |
c906108c | 3005 | clear_pc_function_cache (); |
06d3b283 | 3006 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
3007 | |
3008 | /* Clear globals which might have pointed into a removed objfile. | |
3009 | FIXME: It's not clear which of these are supposed to persist | |
3010 | between expressions and which ought to be reset each time. */ | |
3011 | expression_context_block = NULL; | |
3012 | innermost_block = NULL; | |
8756216b DP |
3013 | |
3014 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
3015 | varobj_invalidate (); | |
3016 | ||
e700d1b2 JB |
3017 | /* Now that the various caches have been cleared, we can re_set |
3018 | our breakpoints without risking it using stale data. */ | |
3019 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
3020 | breakpoint_re_set (); | |
c906108c SS |
3021 | } |
3022 | ||
74b7792f AC |
3023 | static void |
3024 | clear_symtab_users_cleanup (void *ignore) | |
3025 | { | |
c1e56572 | 3026 | clear_symtab_users (0); |
74b7792f | 3027 | } |
c906108c | 3028 | \f |
c906108c SS |
3029 | /* OVERLAYS: |
3030 | The following code implements an abstraction for debugging overlay sections. | |
3031 | ||
3032 | The target model is as follows: | |
3033 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3034 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3035 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3036 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3037 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3038 | sections should be considered to be mapped from the VMA to the LMA. |
3039 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3040 | For instance, if a section has been mapped then its contents |
c5aa993b | 3041 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3042 | |
3043 | Two levels of debugger support for overlays are available. One is | |
3044 | "manual", in which the debugger relies on the user to tell it which | |
3045 | overlays are currently mapped. This level of support is | |
3046 | implemented entirely in the core debugger, and the information about | |
3047 | whether a section is mapped is kept in the objfile->obj_section table. | |
3048 | ||
3049 | The second level of support is "automatic", and is only available if | |
3050 | the target-specific code provides functionality to read the target's | |
3051 | overlay mapping table, and translate its contents for the debugger | |
3052 | (by updating the mapped state information in the obj_section tables). | |
3053 | ||
3054 | The interface is as follows: | |
c5aa993b JM |
3055 | User commands: |
3056 | overlay map <name> -- tell gdb to consider this section mapped | |
3057 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3058 | overlay list -- list the sections that GDB thinks are mapped | |
3059 | overlay read-target -- get the target's state of what's mapped | |
3060 | overlay off/manual/auto -- set overlay debugging state | |
3061 | Functional interface: | |
3062 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3063 | section, return that section. | |
5417f6dc | 3064 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 3065 | the pc, either in its VMA or its LMA |
714835d5 | 3066 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
3067 | section_is_overlay(sect): true if section's VMA != LMA |
3068 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3069 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3070 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3071 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3072 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3073 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3074 | either in VMA or LMA depending on whether | |
c378eb4e | 3075 | the symbol's section is currently mapped. */ |
c906108c SS |
3076 | |
3077 | /* Overlay debugging state: */ | |
3078 | ||
d874f1e2 | 3079 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 3080 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 3081 | |
c906108c | 3082 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3083 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3084 | SECTION is loaded at an address different from where it will "run". */ |
3085 | ||
3086 | int | |
714835d5 | 3087 | section_is_overlay (struct obj_section *section) |
c906108c | 3088 | { |
714835d5 UW |
3089 | if (overlay_debugging && section) |
3090 | { | |
3091 | bfd *abfd = section->objfile->obfd; | |
3092 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 3093 | |
714835d5 UW |
3094 | if (bfd_section_lma (abfd, bfd_section) != 0 |
3095 | && bfd_section_lma (abfd, bfd_section) | |
3096 | != bfd_section_vma (abfd, bfd_section)) | |
3097 | return 1; | |
3098 | } | |
c906108c SS |
3099 | |
3100 | return 0; | |
3101 | } | |
3102 | ||
3103 | /* Function: overlay_invalidate_all (void) | |
3104 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3105 | ||
3106 | static void | |
fba45db2 | 3107 | overlay_invalidate_all (void) |
c906108c | 3108 | { |
c5aa993b | 3109 | struct objfile *objfile; |
c906108c SS |
3110 | struct obj_section *sect; |
3111 | ||
3112 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3113 | if (section_is_overlay (sect)) |
3114 | sect->ovly_mapped = -1; | |
c906108c SS |
3115 | } |
3116 | ||
714835d5 | 3117 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3118 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3119 | |
3120 | Access to the ovly_mapped flag is restricted to this function, so | |
3121 | that we can do automatic update. If the global flag | |
3122 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3123 | overlay_invalidate_all. If the mapped state of the particular | |
3124 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3125 | ||
714835d5 UW |
3126 | int |
3127 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3128 | { |
9216df95 UW |
3129 | struct gdbarch *gdbarch; |
3130 | ||
714835d5 | 3131 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3132 | return 0; |
3133 | ||
c5aa993b | 3134 | switch (overlay_debugging) |
c906108c SS |
3135 | { |
3136 | default: | |
d874f1e2 | 3137 | case ovly_off: |
c5aa993b | 3138 | return 0; /* overlay debugging off */ |
d874f1e2 | 3139 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3140 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3141 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3142 | gdbarch = get_objfile_arch (osect->objfile); |
3143 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3144 | { |
3145 | if (overlay_cache_invalid) | |
3146 | { | |
3147 | overlay_invalidate_all (); | |
3148 | overlay_cache_invalid = 0; | |
3149 | } | |
3150 | if (osect->ovly_mapped == -1) | |
9216df95 | 3151 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3152 | } |
3153 | /* fall thru to manual case */ | |
d874f1e2 | 3154 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3155 | return osect->ovly_mapped == 1; |
3156 | } | |
3157 | } | |
3158 | ||
c906108c SS |
3159 | /* Function: pc_in_unmapped_range |
3160 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3161 | ||
3162 | CORE_ADDR | |
714835d5 | 3163 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3164 | { |
714835d5 UW |
3165 | if (section_is_overlay (section)) |
3166 | { | |
3167 | bfd *abfd = section->objfile->obfd; | |
3168 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3169 | |
714835d5 UW |
3170 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3171 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3172 | CORE_ADDR offset = obj_section_offset (section); | |
3173 | ||
3174 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3175 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3176 | return 1; | |
3177 | } | |
c906108c | 3178 | |
c906108c SS |
3179 | return 0; |
3180 | } | |
3181 | ||
3182 | /* Function: pc_in_mapped_range | |
3183 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3184 | ||
3185 | CORE_ADDR | |
714835d5 | 3186 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3187 | { |
714835d5 UW |
3188 | if (section_is_overlay (section)) |
3189 | { | |
3190 | if (obj_section_addr (section) <= pc | |
3191 | && pc < obj_section_endaddr (section)) | |
3192 | return 1; | |
3193 | } | |
c906108c | 3194 | |
c906108c SS |
3195 | return 0; |
3196 | } | |
3197 | ||
9ec8e6a0 JB |
3198 | /* Return true if the mapped ranges of sections A and B overlap, false |
3199 | otherwise. */ | |
3b7bacac | 3200 | |
b9362cc7 | 3201 | static int |
714835d5 | 3202 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3203 | { |
714835d5 UW |
3204 | CORE_ADDR a_start = obj_section_addr (a); |
3205 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3206 | CORE_ADDR b_start = obj_section_addr (b); | |
3207 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3208 | |
3209 | return (a_start < b_end && b_start < a_end); | |
3210 | } | |
3211 | ||
c906108c SS |
3212 | /* Function: overlay_unmapped_address (PC, SECTION) |
3213 | Returns the address corresponding to PC in the unmapped (load) range. | |
3214 | May be the same as PC. */ | |
3215 | ||
3216 | CORE_ADDR | |
714835d5 | 3217 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3218 | { |
714835d5 UW |
3219 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3220 | { | |
3221 | bfd *abfd = section->objfile->obfd; | |
3222 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3223 | |
714835d5 UW |
3224 | return pc + bfd_section_lma (abfd, bfd_section) |
3225 | - bfd_section_vma (abfd, bfd_section); | |
3226 | } | |
c906108c SS |
3227 | |
3228 | return pc; | |
3229 | } | |
3230 | ||
3231 | /* Function: overlay_mapped_address (PC, SECTION) | |
3232 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3233 | May be the same as PC. */ | |
3234 | ||
3235 | CORE_ADDR | |
714835d5 | 3236 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3237 | { |
714835d5 UW |
3238 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3239 | { | |
3240 | bfd *abfd = section->objfile->obfd; | |
3241 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3242 | |
714835d5 UW |
3243 | return pc + bfd_section_vma (abfd, bfd_section) |
3244 | - bfd_section_lma (abfd, bfd_section); | |
3245 | } | |
c906108c SS |
3246 | |
3247 | return pc; | |
3248 | } | |
3249 | ||
5417f6dc | 3250 | /* Function: symbol_overlayed_address |
c906108c SS |
3251 | Return one of two addresses (relative to the VMA or to the LMA), |
3252 | depending on whether the section is mapped or not. */ | |
3253 | ||
c5aa993b | 3254 | CORE_ADDR |
714835d5 | 3255 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3256 | { |
3257 | if (overlay_debugging) | |
3258 | { | |
c378eb4e | 3259 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3260 | if (section == 0) |
3261 | return address; | |
c378eb4e MS |
3262 | /* If the symbol's section is not an overlay, just return its |
3263 | address. */ | |
c906108c SS |
3264 | if (!section_is_overlay (section)) |
3265 | return address; | |
c378eb4e | 3266 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3267 | if (section_is_mapped (section)) |
3268 | return address; | |
3269 | /* | |
3270 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3271 | * then return its LOADED address rather than its vma address!! | |
3272 | */ | |
3273 | return overlay_unmapped_address (address, section); | |
3274 | } | |
3275 | return address; | |
3276 | } | |
3277 | ||
5417f6dc | 3278 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3279 | Return the best-match overlay section for PC: |
3280 | If PC matches a mapped overlay section's VMA, return that section. | |
3281 | Else if PC matches an unmapped section's VMA, return that section. | |
3282 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3283 | ||
714835d5 | 3284 | struct obj_section * |
fba45db2 | 3285 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3286 | { |
c5aa993b | 3287 | struct objfile *objfile; |
c906108c SS |
3288 | struct obj_section *osect, *best_match = NULL; |
3289 | ||
3290 | if (overlay_debugging) | |
3291 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3292 | if (section_is_overlay (osect)) |
c5aa993b | 3293 | { |
714835d5 | 3294 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3295 | { |
714835d5 UW |
3296 | if (section_is_mapped (osect)) |
3297 | return osect; | |
c5aa993b JM |
3298 | else |
3299 | best_match = osect; | |
3300 | } | |
714835d5 | 3301 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3302 | best_match = osect; |
3303 | } | |
714835d5 | 3304 | return best_match; |
c906108c SS |
3305 | } |
3306 | ||
3307 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3308 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3309 | currently marked as MAPPED, return that section. Else return NULL. */ |
3310 | ||
714835d5 | 3311 | struct obj_section * |
fba45db2 | 3312 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3313 | { |
c5aa993b | 3314 | struct objfile *objfile; |
c906108c SS |
3315 | struct obj_section *osect; |
3316 | ||
3317 | if (overlay_debugging) | |
3318 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3319 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3320 | return osect; | |
c906108c SS |
3321 | |
3322 | return NULL; | |
3323 | } | |
3324 | ||
3325 | /* Function: list_overlays_command | |
c378eb4e | 3326 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3327 | |
5d3055ad | 3328 | static void |
fba45db2 | 3329 | list_overlays_command (char *args, int from_tty) |
c906108c | 3330 | { |
c5aa993b JM |
3331 | int nmapped = 0; |
3332 | struct objfile *objfile; | |
c906108c SS |
3333 | struct obj_section *osect; |
3334 | ||
3335 | if (overlay_debugging) | |
3336 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3337 | if (section_is_mapped (osect)) |
c5aa993b | 3338 | { |
5af949e3 | 3339 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3340 | const char *name; |
3341 | bfd_vma lma, vma; | |
3342 | int size; | |
3343 | ||
3344 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3345 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3346 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3347 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3348 | ||
3349 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3350 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3351 | puts_filtered (" - "); |
5af949e3 | 3352 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3353 | printf_filtered (", mapped at "); |
5af949e3 | 3354 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3355 | puts_filtered (" - "); |
5af949e3 | 3356 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3357 | puts_filtered ("\n"); |
3358 | ||
3359 | nmapped++; | |
3360 | } | |
c906108c | 3361 | if (nmapped == 0) |
a3f17187 | 3362 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3363 | } |
3364 | ||
3365 | /* Function: map_overlay_command | |
3366 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3367 | ||
5d3055ad | 3368 | static void |
fba45db2 | 3369 | map_overlay_command (char *args, int from_tty) |
c906108c | 3370 | { |
c5aa993b JM |
3371 | struct objfile *objfile, *objfile2; |
3372 | struct obj_section *sec, *sec2; | |
c906108c SS |
3373 | |
3374 | if (!overlay_debugging) | |
3e43a32a MS |
3375 | error (_("Overlay debugging not enabled. Use " |
3376 | "either the 'overlay auto' or\n" | |
3377 | "the 'overlay manual' command.")); | |
c906108c SS |
3378 | |
3379 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3380 | error (_("Argument required: name of an overlay section")); |
c906108c | 3381 | |
c378eb4e | 3382 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3383 | ALL_OBJSECTIONS (objfile, sec) |
3384 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3385 | { |
c378eb4e | 3386 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3387 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3388 | continue; /* not an overlay section */ |
3389 | ||
c378eb4e | 3390 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3391 | sec->ovly_mapped = 1; |
3392 | ||
3393 | /* Next, make a pass and unmap any sections that are | |
3394 | overlapped by this new section: */ | |
3395 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3396 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3397 | { |
3398 | if (info_verbose) | |
a3f17187 | 3399 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3400 | bfd_section_name (objfile->obfd, |
3401 | sec2->the_bfd_section)); | |
c378eb4e | 3402 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3403 | } |
3404 | return; | |
3405 | } | |
8a3fe4f8 | 3406 | error (_("No overlay section called %s"), args); |
c906108c SS |
3407 | } |
3408 | ||
3409 | /* Function: unmap_overlay_command | |
5417f6dc | 3410 | Mark the overlay section as unmapped |
c906108c SS |
3411 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3412 | ||
5d3055ad | 3413 | static void |
fba45db2 | 3414 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3415 | { |
c5aa993b | 3416 | struct objfile *objfile; |
7a270e0c | 3417 | struct obj_section *sec = NULL; |
c906108c SS |
3418 | |
3419 | if (!overlay_debugging) | |
3e43a32a MS |
3420 | error (_("Overlay debugging not enabled. " |
3421 | "Use either the 'overlay auto' or\n" | |
3422 | "the 'overlay manual' command.")); | |
c906108c SS |
3423 | |
3424 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3425 | error (_("Argument required: name of an overlay section")); |
c906108c | 3426 | |
c378eb4e | 3427 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3428 | ALL_OBJSECTIONS (objfile, sec) |
3429 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3430 | { |
3431 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3432 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3433 | sec->ovly_mapped = 0; |
3434 | return; | |
3435 | } | |
8a3fe4f8 | 3436 | error (_("No overlay section called %s"), args); |
c906108c SS |
3437 | } |
3438 | ||
3439 | /* Function: overlay_auto_command | |
3440 | A utility command to turn on overlay debugging. | |
c378eb4e | 3441 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3442 | |
3443 | static void | |
fba45db2 | 3444 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3445 | { |
d874f1e2 | 3446 | overlay_debugging = ovly_auto; |
1900040c | 3447 | enable_overlay_breakpoints (); |
c906108c | 3448 | if (info_verbose) |
a3f17187 | 3449 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3450 | } |
3451 | ||
3452 | /* Function: overlay_manual_command | |
3453 | A utility command to turn on overlay debugging. | |
c378eb4e | 3454 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3455 | |
3456 | static void | |
fba45db2 | 3457 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3458 | { |
d874f1e2 | 3459 | overlay_debugging = ovly_on; |
1900040c | 3460 | disable_overlay_breakpoints (); |
c906108c | 3461 | if (info_verbose) |
a3f17187 | 3462 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3463 | } |
3464 | ||
3465 | /* Function: overlay_off_command | |
3466 | A utility command to turn on overlay debugging. | |
c378eb4e | 3467 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3468 | |
3469 | static void | |
fba45db2 | 3470 | overlay_off_command (char *args, int from_tty) |
c906108c | 3471 | { |
d874f1e2 | 3472 | overlay_debugging = ovly_off; |
1900040c | 3473 | disable_overlay_breakpoints (); |
c906108c | 3474 | if (info_verbose) |
a3f17187 | 3475 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3476 | } |
3477 | ||
3478 | static void | |
fba45db2 | 3479 | overlay_load_command (char *args, int from_tty) |
c906108c | 3480 | { |
e17c207e UW |
3481 | struct gdbarch *gdbarch = get_current_arch (); |
3482 | ||
3483 | if (gdbarch_overlay_update_p (gdbarch)) | |
3484 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3485 | else |
8a3fe4f8 | 3486 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3487 | } |
3488 | ||
3489 | /* Function: overlay_command | |
c378eb4e | 3490 | A place-holder for a mis-typed command. */ |
c906108c | 3491 | |
c378eb4e | 3492 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3493 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3494 | |
3495 | static void | |
fba45db2 | 3496 | overlay_command (char *args, int from_tty) |
c906108c | 3497 | { |
c5aa993b | 3498 | printf_unfiltered |
c906108c | 3499 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3500 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3501 | } |
3502 | ||
c906108c SS |
3503 | /* Target Overlays for the "Simplest" overlay manager: |
3504 | ||
5417f6dc RM |
3505 | This is GDB's default target overlay layer. It works with the |
3506 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3507 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3508 | so targets that use a different runtime overlay manager can |
c906108c SS |
3509 | substitute their own overlay_update function and take over the |
3510 | function pointer. | |
3511 | ||
3512 | The overlay_update function pokes around in the target's data structures | |
3513 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3514 | this information. | |
3515 | ||
3516 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3517 | unsigned _novlys; /# number of overlay sections #/ |
3518 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3519 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3520 | {..., ..., ..., ...}, |
3521 | } | |
3522 | unsigned _novly_regions; /# number of overlay regions #/ | |
3523 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3524 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3525 | {..., ..., ...}, |
3526 | } | |
c906108c SS |
3527 | These functions will attempt to update GDB's mappedness state in the |
3528 | symbol section table, based on the target's mappedness state. | |
3529 | ||
3530 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3531 | attempt to detect when the cached copy is invalidated. The main | |
3532 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3533 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3534 | the target (whenever possible). */ |
c906108c SS |
3535 | |
3536 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3537 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3538 | static unsigned cache_novlys = 0; |
c906108c | 3539 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3540 | enum ovly_index |
3541 | { | |
438e1e42 | 3542 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3543 | }; |
c906108c | 3544 | |
c378eb4e | 3545 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3546 | |
c906108c | 3547 | static void |
fba45db2 | 3548 | simple_free_overlay_table (void) |
c906108c SS |
3549 | { |
3550 | if (cache_ovly_table) | |
b8c9b27d | 3551 | xfree (cache_ovly_table); |
c5aa993b | 3552 | cache_novlys = 0; |
c906108c SS |
3553 | cache_ovly_table = NULL; |
3554 | cache_ovly_table_base = 0; | |
3555 | } | |
3556 | ||
9216df95 | 3557 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3558 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3559 | |
c906108c | 3560 | static void |
9216df95 | 3561 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3562 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3563 | { |
c378eb4e | 3564 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3565 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3566 | int i; |
c906108c | 3567 | |
9216df95 | 3568 | read_memory (memaddr, buf, len * size); |
c906108c | 3569 | for (i = 0; i < len; i++) |
e17a4113 | 3570 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3571 | } |
3572 | ||
3573 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3574 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3575 | |
c5aa993b | 3576 | static int |
fba45db2 | 3577 | simple_read_overlay_table (void) |
c906108c | 3578 | { |
3b7344d5 | 3579 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3580 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3581 | struct gdbarch *gdbarch; |
3582 | int word_size; | |
e17a4113 | 3583 | enum bfd_endian byte_order; |
c906108c SS |
3584 | |
3585 | simple_free_overlay_table (); | |
9b27852e | 3586 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3587 | if (! novlys_msym.minsym) |
c906108c | 3588 | { |
8a3fe4f8 | 3589 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3590 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3591 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3592 | return 0; |
c906108c | 3593 | } |
0d43edd1 | 3594 | |
7c7b6655 TT |
3595 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3596 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3597 | { |
8a3fe4f8 | 3598 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3599 | "`_ovly_table' array\n" |
8a3fe4f8 | 3600 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3601 | return 0; |
3602 | } | |
3603 | ||
7c7b6655 | 3604 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3605 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3606 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3607 | |
77e371c0 TT |
3608 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3609 | 4, byte_order); | |
0d43edd1 JB |
3610 | cache_ovly_table |
3611 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
77e371c0 | 3612 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3613 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3614 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3615 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3616 | |
c5aa993b | 3617 | return 1; /* SUCCESS */ |
c906108c SS |
3618 | } |
3619 | ||
5417f6dc | 3620 | /* Function: simple_overlay_update_1 |
c906108c SS |
3621 | A helper function for simple_overlay_update. Assuming a cached copy |
3622 | of _ovly_table exists, look through it to find an entry whose vma, | |
3623 | lma and size match those of OSECT. Re-read the entry and make sure | |
3624 | it still matches OSECT (else the table may no longer be valid). | |
3625 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3626 | success, 0 for failure. */ | |
3627 | ||
3628 | static int | |
fba45db2 | 3629 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3630 | { |
3631 | int i, size; | |
fbd35540 MS |
3632 | bfd *obfd = osect->objfile->obfd; |
3633 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3634 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3635 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3636 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3637 | |
2c500098 | 3638 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3639 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3640 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3641 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
438e1e42 | 3642 | /* && cache_ovly_table[i][OSIZE] == size */ ) |
c906108c | 3643 | { |
9216df95 UW |
3644 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3645 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3646 | 4, word_size, byte_order); |
fbd35540 MS |
3647 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3648 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
438e1e42 | 3649 | /* && cache_ovly_table[i][OSIZE] == size */ ) |
c906108c SS |
3650 | { |
3651 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3652 | return 1; | |
3653 | } | |
c378eb4e | 3654 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3655 | return 0; |
3656 | } | |
3657 | return 0; | |
3658 | } | |
3659 | ||
3660 | /* Function: simple_overlay_update | |
5417f6dc RM |
3661 | If OSECT is NULL, then update all sections' mapped state |
3662 | (after re-reading the entire target _ovly_table). | |
3663 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3664 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3665 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3666 | re-read the entire cache, and go ahead and update all sections. */ |
3667 | ||
1c772458 | 3668 | void |
fba45db2 | 3669 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3670 | { |
c5aa993b | 3671 | struct objfile *objfile; |
c906108c | 3672 | |
c378eb4e | 3673 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3674 | if (osect) |
c378eb4e | 3675 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3676 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3677 | { |
3678 | /* Does its cached location match what's currently in the | |
3679 | symtab? */ | |
3b7344d5 | 3680 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3681 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3682 | ||
3b7344d5 | 3683 | if (minsym.minsym == NULL) |
9cc89665 MS |
3684 | error (_("Error reading inferior's overlay table: couldn't " |
3685 | "find `_ovly_table' array\n" | |
3686 | "in inferior. Use `overlay manual' mode.")); | |
3687 | ||
77e371c0 | 3688 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3689 | /* Then go ahead and try to look up this single section in |
3690 | the cache. */ | |
3691 | if (simple_overlay_update_1 (osect)) | |
3692 | /* Found it! We're done. */ | |
3693 | return; | |
3694 | } | |
c906108c SS |
3695 | |
3696 | /* Cached table no good: need to read the entire table anew. | |
3697 | Or else we want all the sections, in which case it's actually | |
3698 | more efficient to read the whole table in one block anyway. */ | |
3699 | ||
0d43edd1 JB |
3700 | if (! simple_read_overlay_table ()) |
3701 | return; | |
3702 | ||
c378eb4e | 3703 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3704 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3705 | if (section_is_overlay (osect)) |
c5aa993b JM |
3706 | { |
3707 | int i, size; | |
fbd35540 MS |
3708 | bfd *obfd = osect->objfile->obfd; |
3709 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3710 | |
2c500098 | 3711 | size = bfd_get_section_size (bsect); |
c5aa993b | 3712 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3713 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3714 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
438e1e42 | 3715 | /* && cache_ovly_table[i][OSIZE] == size */ ) |
c378eb4e | 3716 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3717 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3718 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3719 | } |
3720 | } | |
c906108c SS |
3721 | } |
3722 | ||
086df311 DJ |
3723 | /* Set the output sections and output offsets for section SECTP in |
3724 | ABFD. The relocation code in BFD will read these offsets, so we | |
3725 | need to be sure they're initialized. We map each section to itself, | |
3726 | with no offset; this means that SECTP->vma will be honored. */ | |
3727 | ||
3728 | static void | |
3729 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3730 | { | |
3731 | sectp->output_section = sectp; | |
3732 | sectp->output_offset = 0; | |
3733 | } | |
3734 | ||
ac8035ab TG |
3735 | /* Default implementation for sym_relocate. */ |
3736 | ||
ac8035ab TG |
3737 | bfd_byte * |
3738 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3739 | bfd_byte *buf) | |
3740 | { | |
3019eac3 DE |
3741 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3742 | DWO file. */ | |
3743 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3744 | |
3745 | /* We're only interested in sections with relocation | |
3746 | information. */ | |
3747 | if ((sectp->flags & SEC_RELOC) == 0) | |
3748 | return NULL; | |
3749 | ||
3750 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3751 | all sections begin at 0. */ | |
3752 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3753 | ||
3754 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3755 | } | |
3756 | ||
086df311 DJ |
3757 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3758 | contents are stored in BUF if it is non-NULL, or returned in a | |
3759 | malloc'd buffer otherwise. | |
3760 | ||
3761 | For some platforms and debug info formats, shared libraries contain | |
3762 | relocations against the debug sections (particularly for DWARF-2; | |
3763 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3764 | the version of the linker in use). Also, ELF object files naturally | |
3765 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3766 | the relocations in order to get the locations of symbols correct. |
3767 | Another example that may require relocation processing, is the | |
3768 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3769 | debug section. */ | |
086df311 DJ |
3770 | |
3771 | bfd_byte * | |
ac8035ab TG |
3772 | symfile_relocate_debug_section (struct objfile *objfile, |
3773 | asection *sectp, bfd_byte *buf) | |
086df311 | 3774 | { |
ac8035ab | 3775 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3776 | |
ac8035ab | 3777 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3778 | } |
c906108c | 3779 | |
31d99776 DJ |
3780 | struct symfile_segment_data * |
3781 | get_symfile_segment_data (bfd *abfd) | |
3782 | { | |
00b5771c | 3783 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3784 | |
3785 | if (sf == NULL) | |
3786 | return NULL; | |
3787 | ||
3788 | return sf->sym_segments (abfd); | |
3789 | } | |
3790 | ||
3791 | void | |
3792 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3793 | { | |
3794 | xfree (data->segment_bases); | |
3795 | xfree (data->segment_sizes); | |
3796 | xfree (data->segment_info); | |
3797 | xfree (data); | |
3798 | } | |
3799 | ||
28c32713 JB |
3800 | /* Given: |
3801 | - DATA, containing segment addresses from the object file ABFD, and | |
3802 | the mapping from ABFD's sections onto the segments that own them, | |
3803 | and | |
3804 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3805 | segment addresses reported by the target, | |
3806 | store the appropriate offsets for each section in OFFSETS. | |
3807 | ||
3808 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3809 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3810 | ||
8d385431 DJ |
3811 | If there are more entries, then ignore the extra. The target may |
3812 | not be able to distinguish between an empty data segment and a | |
3813 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3814 | |
31d99776 | 3815 | int |
3189cb12 DE |
3816 | symfile_map_offsets_to_segments (bfd *abfd, |
3817 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3818 | struct section_offsets *offsets, |
3819 | int num_segment_bases, | |
3820 | const CORE_ADDR *segment_bases) | |
3821 | { | |
3822 | int i; | |
3823 | asection *sect; | |
3824 | ||
28c32713 JB |
3825 | /* It doesn't make sense to call this function unless you have some |
3826 | segment base addresses. */ | |
202b96c1 | 3827 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3828 | |
31d99776 DJ |
3829 | /* If we do not have segment mappings for the object file, we |
3830 | can not relocate it by segments. */ | |
3831 | gdb_assert (data != NULL); | |
3832 | gdb_assert (data->num_segments > 0); | |
3833 | ||
31d99776 DJ |
3834 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3835 | { | |
31d99776 DJ |
3836 | int which = data->segment_info[i]; |
3837 | ||
28c32713 JB |
3838 | gdb_assert (0 <= which && which <= data->num_segments); |
3839 | ||
3840 | /* Don't bother computing offsets for sections that aren't | |
3841 | loaded as part of any segment. */ | |
3842 | if (! which) | |
3843 | continue; | |
3844 | ||
3845 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3846 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3847 | if (which > num_segment_bases) |
28c32713 | 3848 | which = num_segment_bases; |
31d99776 | 3849 | |
28c32713 JB |
3850 | offsets->offsets[i] = (segment_bases[which - 1] |
3851 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3852 | } |
3853 | ||
3854 | return 1; | |
3855 | } | |
3856 | ||
3857 | static void | |
3858 | symfile_find_segment_sections (struct objfile *objfile) | |
3859 | { | |
3860 | bfd *abfd = objfile->obfd; | |
3861 | int i; | |
3862 | asection *sect; | |
3863 | struct symfile_segment_data *data; | |
3864 | ||
3865 | data = get_symfile_segment_data (objfile->obfd); | |
3866 | if (data == NULL) | |
3867 | return; | |
3868 | ||
3869 | if (data->num_segments != 1 && data->num_segments != 2) | |
3870 | { | |
3871 | free_symfile_segment_data (data); | |
3872 | return; | |
3873 | } | |
3874 | ||
3875 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3876 | { | |
31d99776 DJ |
3877 | int which = data->segment_info[i]; |
3878 | ||
3879 | if (which == 1) | |
3880 | { | |
3881 | if (objfile->sect_index_text == -1) | |
3882 | objfile->sect_index_text = sect->index; | |
3883 | ||
3884 | if (objfile->sect_index_rodata == -1) | |
3885 | objfile->sect_index_rodata = sect->index; | |
3886 | } | |
3887 | else if (which == 2) | |
3888 | { | |
3889 | if (objfile->sect_index_data == -1) | |
3890 | objfile->sect_index_data = sect->index; | |
3891 | ||
3892 | if (objfile->sect_index_bss == -1) | |
3893 | objfile->sect_index_bss = sect->index; | |
3894 | } | |
3895 | } | |
3896 | ||
3897 | free_symfile_segment_data (data); | |
3898 | } | |
3899 | ||
76ad5e1e NB |
3900 | /* Listen for free_objfile events. */ |
3901 | ||
3902 | static void | |
3903 | symfile_free_objfile (struct objfile *objfile) | |
3904 | { | |
c33b2f12 MM |
3905 | /* Remove the target sections owned by this objfile. */ |
3906 | if (objfile != NULL) | |
76ad5e1e NB |
3907 | remove_target_sections ((void *) objfile); |
3908 | } | |
3909 | ||
540c2971 DE |
3910 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3911 | Expand all symtabs that match the specified criteria. | |
3912 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3913 | ||
3914 | void | |
bb4142cf DE |
3915 | expand_symtabs_matching (expand_symtabs_file_matcher_ftype *file_matcher, |
3916 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 3917 | expand_symtabs_exp_notify_ftype *expansion_notify, |
bb4142cf DE |
3918 | enum search_domain kind, |
3919 | void *data) | |
540c2971 DE |
3920 | { |
3921 | struct objfile *objfile; | |
3922 | ||
3923 | ALL_OBJFILES (objfile) | |
3924 | { | |
3925 | if (objfile->sf) | |
bb4142cf | 3926 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
276d885b GB |
3927 | symbol_matcher, |
3928 | expansion_notify, kind, | |
bb4142cf | 3929 | data); |
540c2971 DE |
3930 | } |
3931 | } | |
3932 | ||
3933 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3934 | Map function FUN over every file. | |
3935 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3936 | ||
3937 | void | |
bb4142cf DE |
3938 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3939 | int need_fullname) | |
540c2971 DE |
3940 | { |
3941 | struct objfile *objfile; | |
3942 | ||
3943 | ALL_OBJFILES (objfile) | |
3944 | { | |
3945 | if (objfile->sf) | |
3946 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3947 | need_fullname); | |
3948 | } | |
3949 | } | |
3950 | ||
c906108c | 3951 | void |
fba45db2 | 3952 | _initialize_symfile (void) |
c906108c SS |
3953 | { |
3954 | struct cmd_list_element *c; | |
c5aa993b | 3955 | |
76ad5e1e NB |
3956 | observer_attach_free_objfile (symfile_free_objfile); |
3957 | ||
1a966eab AC |
3958 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3959 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3960 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3961 | to execute."), &cmdlist); |
5ba2abeb | 3962 | set_cmd_completer (c, filename_completer); |
c906108c | 3963 | |
1a966eab | 3964 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3965 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3966 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3967 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3968 | The optional arguments are section-name section-address pairs and\n\ |
3969 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3970 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3971 | &cmdlist); |
5ba2abeb | 3972 | set_cmd_completer (c, filename_completer); |
c906108c | 3973 | |
63644780 NB |
3974 | c = add_cmd ("remove-symbol-file", class_files, |
3975 | remove_symbol_file_command, _("\ | |
3976 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3977 | Usage: remove-symbol-file FILENAME\n\ | |
3978 | remove-symbol-file -a ADDRESS\n\ | |
3979 | The file to remove can be identified by its filename or by an address\n\ | |
3980 | that lies within the boundaries of this symbol file in memory."), | |
3981 | &cmdlist); | |
3982 | ||
1a966eab AC |
3983 | c = add_cmd ("load", class_files, load_command, _("\ |
3984 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3985 | for access from GDB.\n\ |
3986 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3987 | set_cmd_completer (c, filename_completer); |
c906108c | 3988 | |
c5aa993b | 3989 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3990 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3991 | "overlay ", 0, &cmdlist); |
3992 | ||
3993 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3994 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3995 | ||
c5aa993b | 3996 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3997 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3998 | |
c5aa993b | 3999 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 4000 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 4001 | |
c5aa993b | 4002 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 4003 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 4004 | |
c5aa993b | 4005 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 4006 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 4007 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 4008 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 4009 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 4010 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 4011 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 4012 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
4013 | |
4014 | /* Filename extension to source language lookup table: */ | |
4015 | init_filename_language_table (); | |
26c41df3 AC |
4016 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4017 | &ext_args, _("\ | |
4018 | Set mapping between filename extension and source language."), _("\ | |
4019 | Show mapping between filename extension and source language."), _("\ | |
4020 | Usage: set extension-language .foo bar"), | |
4021 | set_ext_lang_command, | |
920d2a44 | 4022 | show_ext_args, |
26c41df3 | 4023 | &setlist, &showlist); |
c906108c | 4024 | |
c5aa993b | 4025 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4026 | _("All filename extensions associated with a source language.")); |
917317f4 | 4027 | |
525226b5 AC |
4028 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4029 | &debug_file_directory, _("\ | |
24ddea62 JK |
4030 | Set the directories where separate debug symbols are searched for."), _("\ |
4031 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
4032 | Separate debug symbols are first searched for in the same\n\ |
4033 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4034 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 4035 | each global debug-file-directory component prepended."), |
525226b5 | 4036 | NULL, |
920d2a44 | 4037 | show_debug_file_directory, |
525226b5 | 4038 | &setlist, &showlist); |
770e7fc7 DE |
4039 | |
4040 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
4041 | print_symbol_loading_enums, &print_symbol_loading, | |
4042 | _("\ | |
4043 | Set printing of symbol loading messages."), _("\ | |
4044 | Show printing of symbol loading messages."), _("\ | |
4045 | off == turn all messages off\n\ | |
4046 | brief == print messages for the executable,\n\ | |
4047 | and brief messages for shared libraries\n\ | |
4048 | full == print messages for the executable,\n\ | |
4049 | and messages for each shared library."), | |
4050 | NULL, | |
4051 | NULL, | |
4052 | &setprintlist, &showprintlist); | |
c906108c | 4053 | } |