Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1990-2013 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
7e8580c1 | 48 | #include "gdb_assert.h" |
fe898f56 | 49 | #include "block.h" |
ea53e89f | 50 | #include "observer.h" |
c1bd25fd | 51 | #include "exec.h" |
9bdcbae7 | 52 | #include "parser-defs.h" |
8756216b | 53 | #include "varobj.h" |
77069918 | 54 | #include "elf-bfd.h" |
e85a822c | 55 | #include "solib.h" |
f1838a98 | 56 | #include "remote.h" |
1bfeeb0f | 57 | #include "stack.h" |
cbb099e8 | 58 | #include "gdb_bfd.h" |
529480d0 | 59 | #include "cli/cli-utils.h" |
76ad5e1e | 60 | #include "target.h" |
c906108c | 61 | |
c906108c SS |
62 | #include <sys/types.h> |
63 | #include <fcntl.h> | |
0e9f083f | 64 | #include <string.h> |
53ce3c39 | 65 | #include <sys/stat.h> |
c906108c SS |
66 | #include <ctype.h> |
67 | #include <time.h> | |
2b71414d | 68 | #include <sys/time.h> |
c906108c | 69 | |
ccefe4c4 | 70 | #include "psymtab.h" |
c906108c | 71 | |
3e43a32a MS |
72 | int (*deprecated_ui_load_progress_hook) (const char *section, |
73 | unsigned long num); | |
9a4105ab | 74 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
75 | unsigned long section_sent, |
76 | unsigned long section_size, | |
77 | unsigned long total_sent, | |
c2d11a7d | 78 | unsigned long total_size); |
769d7dc4 AC |
79 | void (*deprecated_pre_add_symbol_hook) (const char *); |
80 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 81 | |
74b7792f AC |
82 | static void clear_symtab_users_cleanup (void *ignore); |
83 | ||
c378eb4e MS |
84 | /* Global variables owned by this file. */ |
85 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 86 | |
c378eb4e | 87 | /* Functions this file defines. */ |
c906108c | 88 | |
a14ed312 | 89 | static void load_command (char *, int); |
c906108c | 90 | |
69150c3d | 91 | static void symbol_file_add_main_1 (const char *args, int from_tty, int flags); |
d7db6da9 | 92 | |
a14ed312 | 93 | static void add_symbol_file_command (char *, int); |
c906108c | 94 | |
00b5771c | 95 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 96 | |
a14ed312 | 97 | static void decrement_reading_symtab (void *); |
c906108c | 98 | |
a14ed312 | 99 | static void overlay_invalidate_all (void); |
c906108c | 100 | |
a14ed312 | 101 | static void overlay_auto_command (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | static void overlay_manual_command (char *, int); |
c906108c | 104 | |
a14ed312 | 105 | static void overlay_off_command (char *, int); |
c906108c | 106 | |
a14ed312 | 107 | static void overlay_load_command (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void overlay_command (char *, int); |
c906108c | 110 | |
a14ed312 | 111 | static void simple_free_overlay_table (void); |
c906108c | 112 | |
e17a4113 UW |
113 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
114 | enum bfd_endian); | |
c906108c | 115 | |
a14ed312 | 116 | static int simple_read_overlay_table (void); |
c906108c | 117 | |
a14ed312 | 118 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 119 | |
a14ed312 | 120 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 121 | |
a14ed312 | 122 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 123 | |
a14ed312 | 124 | static void init_filename_language_table (void); |
392a587b | 125 | |
31d99776 DJ |
126 | static void symfile_find_segment_sections (struct objfile *objfile); |
127 | ||
a14ed312 | 128 | void _initialize_symfile (void); |
c906108c SS |
129 | |
130 | /* List of all available sym_fns. On gdb startup, each object file reader | |
131 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 132 | prepared to read. */ |
c906108c | 133 | |
c256e171 DE |
134 | typedef struct |
135 | { | |
136 | /* BFD flavour that we handle. */ | |
137 | enum bfd_flavour sym_flavour; | |
138 | ||
139 | /* The "vtable" of symbol functions. */ | |
140 | const struct sym_fns *sym_fns; | |
141 | } registered_sym_fns; | |
00b5771c | 142 | |
c256e171 DE |
143 | DEF_VEC_O (registered_sym_fns); |
144 | ||
145 | static VEC (registered_sym_fns) *symtab_fns = NULL; | |
c906108c | 146 | |
b7209cb4 FF |
147 | /* If non-zero, shared library symbols will be added automatically |
148 | when the inferior is created, new libraries are loaded, or when | |
149 | attaching to the inferior. This is almost always what users will | |
150 | want to have happen; but for very large programs, the startup time | |
151 | will be excessive, and so if this is a problem, the user can clear | |
152 | this flag and then add the shared library symbols as needed. Note | |
153 | that there is a potential for confusion, since if the shared | |
c906108c | 154 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 155 | report all the functions that are actually present. */ |
c906108c SS |
156 | |
157 | int auto_solib_add = 1; | |
c906108c | 158 | \f |
c5aa993b | 159 | |
0d14a781 | 160 | /* True if we are reading a symbol table. */ |
c906108c SS |
161 | |
162 | int currently_reading_symtab = 0; | |
163 | ||
164 | static void | |
fba45db2 | 165 | decrement_reading_symtab (void *dummy) |
c906108c SS |
166 | { |
167 | currently_reading_symtab--; | |
2cb9c859 | 168 | gdb_assert (currently_reading_symtab >= 0); |
c906108c SS |
169 | } |
170 | ||
ccefe4c4 TT |
171 | /* Increment currently_reading_symtab and return a cleanup that can be |
172 | used to decrement it. */ | |
3b7bacac | 173 | |
ccefe4c4 TT |
174 | struct cleanup * |
175 | increment_reading_symtab (void) | |
c906108c | 176 | { |
ccefe4c4 | 177 | ++currently_reading_symtab; |
2cb9c859 | 178 | gdb_assert (currently_reading_symtab > 0); |
ccefe4c4 | 179 | return make_cleanup (decrement_reading_symtab, NULL); |
c906108c SS |
180 | } |
181 | ||
5417f6dc RM |
182 | /* Remember the lowest-addressed loadable section we've seen. |
183 | This function is called via bfd_map_over_sections. | |
c906108c SS |
184 | |
185 | In case of equal vmas, the section with the largest size becomes the | |
186 | lowest-addressed loadable section. | |
187 | ||
188 | If the vmas and sizes are equal, the last section is considered the | |
189 | lowest-addressed loadable section. */ | |
190 | ||
191 | void | |
4efb68b1 | 192 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 193 | { |
c5aa993b | 194 | asection **lowest = (asection **) obj; |
c906108c | 195 | |
eb73e134 | 196 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
197 | return; |
198 | if (!*lowest) | |
199 | *lowest = sect; /* First loadable section */ | |
200 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
201 | *lowest = sect; /* A lower loadable section */ | |
202 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
203 | && (bfd_section_size (abfd, (*lowest)) | |
204 | <= bfd_section_size (abfd, sect))) | |
205 | *lowest = sect; | |
206 | } | |
207 | ||
d76488d8 TT |
208 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
209 | new object's 'num_sections' field is set to 0; it must be updated | |
210 | by the caller. */ | |
a39a16c4 MM |
211 | |
212 | struct section_addr_info * | |
213 | alloc_section_addr_info (size_t num_sections) | |
214 | { | |
215 | struct section_addr_info *sap; | |
216 | size_t size; | |
217 | ||
218 | size = (sizeof (struct section_addr_info) | |
219 | + sizeof (struct other_sections) * (num_sections - 1)); | |
220 | sap = (struct section_addr_info *) xmalloc (size); | |
221 | memset (sap, 0, size); | |
a39a16c4 MM |
222 | |
223 | return sap; | |
224 | } | |
62557bbc KB |
225 | |
226 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 227 | an existing section table. */ |
62557bbc KB |
228 | |
229 | extern struct section_addr_info * | |
0542c86d PA |
230 | build_section_addr_info_from_section_table (const struct target_section *start, |
231 | const struct target_section *end) | |
62557bbc KB |
232 | { |
233 | struct section_addr_info *sap; | |
0542c86d | 234 | const struct target_section *stp; |
62557bbc KB |
235 | int oidx; |
236 | ||
a39a16c4 | 237 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
238 | |
239 | for (stp = start, oidx = 0; stp != end; stp++) | |
240 | { | |
2b2848e2 DE |
241 | struct bfd_section *asect = stp->the_bfd_section; |
242 | bfd *abfd = asect->owner; | |
243 | ||
244 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
a39a16c4 | 245 | && oidx < end - start) |
62557bbc KB |
246 | { |
247 | sap->other[oidx].addr = stp->addr; | |
2b2848e2 DE |
248 | sap->other[oidx].name = xstrdup (bfd_section_name (abfd, asect)); |
249 | sap->other[oidx].sectindex = gdb_bfd_section_index (abfd, asect); | |
62557bbc KB |
250 | oidx++; |
251 | } | |
252 | } | |
253 | ||
d76488d8 TT |
254 | sap->num_sections = oidx; |
255 | ||
62557bbc KB |
256 | return sap; |
257 | } | |
258 | ||
82ccf5a5 | 259 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 260 | |
82ccf5a5 JK |
261 | static struct section_addr_info * |
262 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
263 | { |
264 | struct section_addr_info *sap; | |
265 | int i; | |
266 | struct bfd_section *sec; | |
267 | ||
82ccf5a5 JK |
268 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
269 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
270 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 271 | { |
82ccf5a5 JK |
272 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
273 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 274 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
275 | i++; |
276 | } | |
d76488d8 TT |
277 | |
278 | sap->num_sections = i; | |
279 | ||
089b4803 TG |
280 | return sap; |
281 | } | |
282 | ||
82ccf5a5 JK |
283 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
284 | ||
285 | struct section_addr_info * | |
286 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
287 | { | |
288 | struct section_addr_info *sap; | |
289 | int i; | |
290 | ||
291 | /* Before reread_symbols gets rewritten it is not safe to call: | |
292 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
293 | */ | |
294 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 295 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
296 | { |
297 | int sectindex = sap->other[i].sectindex; | |
298 | ||
299 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
300 | } | |
301 | return sap; | |
302 | } | |
62557bbc | 303 | |
c378eb4e | 304 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
305 | |
306 | extern void | |
307 | free_section_addr_info (struct section_addr_info *sap) | |
308 | { | |
309 | int idx; | |
310 | ||
a39a16c4 | 311 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 312 | xfree (sap->other[idx].name); |
b8c9b27d | 313 | xfree (sap); |
62557bbc KB |
314 | } |
315 | ||
e8289572 | 316 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 317 | |
e8289572 JB |
318 | static void |
319 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 320 | { |
e8289572 | 321 | asection *sect; |
c906108c | 322 | int i; |
5417f6dc | 323 | |
b8fbeb18 | 324 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 325 | if (sect) |
b8fbeb18 EZ |
326 | objfile->sect_index_text = sect->index; |
327 | ||
328 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 329 | if (sect) |
b8fbeb18 EZ |
330 | objfile->sect_index_data = sect->index; |
331 | ||
332 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 333 | if (sect) |
b8fbeb18 EZ |
334 | objfile->sect_index_bss = sect->index; |
335 | ||
336 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 337 | if (sect) |
b8fbeb18 EZ |
338 | objfile->sect_index_rodata = sect->index; |
339 | ||
bbcd32ad FF |
340 | /* This is where things get really weird... We MUST have valid |
341 | indices for the various sect_index_* members or gdb will abort. | |
342 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
343 | accomodate that. First, check for a file with the standard |
344 | one or two segments. */ | |
345 | ||
346 | symfile_find_segment_sections (objfile); | |
347 | ||
348 | /* Except when explicitly adding symbol files at some address, | |
349 | section_offsets contains nothing but zeros, so it doesn't matter | |
350 | which slot in section_offsets the individual sect_index_* members | |
351 | index into. So if they are all zero, it is safe to just point | |
352 | all the currently uninitialized indices to the first slot. But | |
353 | beware: if this is the main executable, it may be relocated | |
354 | later, e.g. by the remote qOffsets packet, and then this will | |
355 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
356 | |
357 | for (i = 0; i < objfile->num_sections; i++) | |
358 | { | |
359 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
360 | { | |
361 | break; | |
362 | } | |
363 | } | |
364 | if (i == objfile->num_sections) | |
365 | { | |
366 | if (objfile->sect_index_text == -1) | |
367 | objfile->sect_index_text = 0; | |
368 | if (objfile->sect_index_data == -1) | |
369 | objfile->sect_index_data = 0; | |
370 | if (objfile->sect_index_bss == -1) | |
371 | objfile->sect_index_bss = 0; | |
372 | if (objfile->sect_index_rodata == -1) | |
373 | objfile->sect_index_rodata = 0; | |
374 | } | |
b8fbeb18 | 375 | } |
c906108c | 376 | |
c1bd25fd DJ |
377 | /* The arguments to place_section. */ |
378 | ||
379 | struct place_section_arg | |
380 | { | |
381 | struct section_offsets *offsets; | |
382 | CORE_ADDR lowest; | |
383 | }; | |
384 | ||
385 | /* Find a unique offset to use for loadable section SECT if | |
386 | the user did not provide an offset. */ | |
387 | ||
2c0b251b | 388 | static void |
c1bd25fd DJ |
389 | place_section (bfd *abfd, asection *sect, void *obj) |
390 | { | |
391 | struct place_section_arg *arg = obj; | |
392 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
393 | int done; | |
3bd72c6f | 394 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 395 | |
2711e456 DJ |
396 | /* We are only interested in allocated sections. */ |
397 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
398 | return; |
399 | ||
400 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 401 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
402 | return; |
403 | ||
404 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
405 | start_addr = (arg->lowest + align - 1) & -align; |
406 | ||
c1bd25fd DJ |
407 | do { |
408 | asection *cur_sec; | |
c1bd25fd | 409 | |
c1bd25fd DJ |
410 | done = 1; |
411 | ||
412 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
413 | { | |
414 | int indx = cur_sec->index; | |
c1bd25fd DJ |
415 | |
416 | /* We don't need to compare against ourself. */ | |
417 | if (cur_sec == sect) | |
418 | continue; | |
419 | ||
2711e456 DJ |
420 | /* We can only conflict with allocated sections. */ |
421 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
422 | continue; |
423 | ||
424 | /* If the section offset is 0, either the section has not been placed | |
425 | yet, or it was the lowest section placed (in which case LOWEST | |
426 | will be past its end). */ | |
427 | if (offsets[indx] == 0) | |
428 | continue; | |
429 | ||
430 | /* If this section would overlap us, then we must move up. */ | |
431 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
432 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
433 | { | |
434 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
435 | start_addr = (start_addr + align - 1) & -align; | |
436 | done = 0; | |
3bd72c6f | 437 | break; |
c1bd25fd DJ |
438 | } |
439 | ||
440 | /* Otherwise, we appear to be OK. So far. */ | |
441 | } | |
442 | } | |
443 | while (!done); | |
444 | ||
65cf3563 | 445 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 446 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 447 | } |
e8289572 | 448 | |
75242ef4 JK |
449 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
450 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
451 | entries. */ | |
e8289572 JB |
452 | |
453 | void | |
75242ef4 JK |
454 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
455 | int num_sections, | |
3189cb12 | 456 | const struct section_addr_info *addrs) |
e8289572 JB |
457 | { |
458 | int i; | |
459 | ||
75242ef4 | 460 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 461 | |
c378eb4e | 462 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 463 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 464 | { |
3189cb12 | 465 | const struct other_sections *osp; |
e8289572 | 466 | |
75242ef4 | 467 | osp = &addrs->other[i]; |
5488dafb | 468 | if (osp->sectindex == -1) |
e8289572 JB |
469 | continue; |
470 | ||
c378eb4e | 471 | /* Record all sections in offsets. */ |
e8289572 | 472 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 473 | the BFD index. */ |
75242ef4 JK |
474 | section_offsets->offsets[osp->sectindex] = osp->addr; |
475 | } | |
476 | } | |
477 | ||
1276c759 JK |
478 | /* Transform section name S for a name comparison. prelink can split section |
479 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
480 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
481 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
482 | (`.sbss') section has invalid (increased) virtual address. */ | |
483 | ||
484 | static const char * | |
485 | addr_section_name (const char *s) | |
486 | { | |
487 | if (strcmp (s, ".dynbss") == 0) | |
488 | return ".bss"; | |
489 | if (strcmp (s, ".sdynbss") == 0) | |
490 | return ".sbss"; | |
491 | ||
492 | return s; | |
493 | } | |
494 | ||
82ccf5a5 JK |
495 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
496 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
497 | ||
498 | static int | |
499 | addrs_section_compar (const void *ap, const void *bp) | |
500 | { | |
501 | const struct other_sections *a = *((struct other_sections **) ap); | |
502 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 503 | int retval; |
82ccf5a5 | 504 | |
1276c759 | 505 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
506 | if (retval) |
507 | return retval; | |
508 | ||
5488dafb | 509 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
510 | } |
511 | ||
512 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
513 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
514 | ||
515 | static struct other_sections ** | |
516 | addrs_section_sort (struct section_addr_info *addrs) | |
517 | { | |
518 | struct other_sections **array; | |
519 | int i; | |
520 | ||
521 | /* `+ 1' for the NULL terminator. */ | |
522 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
d76488d8 | 523 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
524 | array[i] = &addrs->other[i]; |
525 | array[i] = NULL; | |
526 | ||
527 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
528 | ||
529 | return array; | |
530 | } | |
531 | ||
75242ef4 | 532 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
533 | also SECTINDEXes specific to ABFD there. This function can be used to |
534 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
535 | |
536 | void | |
537 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
538 | { | |
539 | asection *lower_sect; | |
75242ef4 JK |
540 | CORE_ADDR lower_offset; |
541 | int i; | |
82ccf5a5 JK |
542 | struct cleanup *my_cleanup; |
543 | struct section_addr_info *abfd_addrs; | |
544 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
545 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
546 | |
547 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
548 | continguous sections. */ |
549 | lower_sect = NULL; | |
550 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
551 | if (lower_sect == NULL) |
552 | { | |
553 | warning (_("no loadable sections found in added symbol-file %s"), | |
554 | bfd_get_filename (abfd)); | |
555 | lower_offset = 0; | |
e8289572 | 556 | } |
75242ef4 JK |
557 | else |
558 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
559 | ||
82ccf5a5 JK |
560 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
561 | in ABFD. Section names are not unique - there can be multiple sections of | |
562 | the same name. Also the sections of the same name do not have to be | |
563 | adjacent to each other. Some sections may be present only in one of the | |
564 | files. Even sections present in both files do not have to be in the same | |
565 | order. | |
566 | ||
567 | Use stable sort by name for the sections in both files. Then linearly | |
568 | scan both lists matching as most of the entries as possible. */ | |
569 | ||
570 | addrs_sorted = addrs_section_sort (addrs); | |
571 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
572 | ||
573 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
574 | make_cleanup_free_section_addr_info (abfd_addrs); | |
575 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
576 | make_cleanup (xfree, abfd_addrs_sorted); | |
577 | ||
c378eb4e MS |
578 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
579 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
580 | |
581 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
582 | * addrs->num_sections); | |
583 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
584 | ||
585 | while (*addrs_sorted) | |
586 | { | |
1276c759 | 587 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
588 | |
589 | while (*abfd_addrs_sorted | |
1276c759 JK |
590 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
591 | sect_name) < 0) | |
82ccf5a5 JK |
592 | abfd_addrs_sorted++; |
593 | ||
594 | if (*abfd_addrs_sorted | |
1276c759 JK |
595 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
596 | sect_name) == 0) | |
82ccf5a5 JK |
597 | { |
598 | int index_in_addrs; | |
599 | ||
600 | /* Make the found item directly addressable from ADDRS. */ | |
601 | index_in_addrs = *addrs_sorted - addrs->other; | |
602 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
603 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
604 | ||
605 | /* Never use the same ABFD entry twice. */ | |
606 | abfd_addrs_sorted++; | |
607 | } | |
608 | ||
609 | addrs_sorted++; | |
610 | } | |
611 | ||
75242ef4 JK |
612 | /* Calculate offsets for the loadable sections. |
613 | FIXME! Sections must be in order of increasing loadable section | |
614 | so that contiguous sections can use the lower-offset!!! | |
615 | ||
616 | Adjust offsets if the segments are not contiguous. | |
617 | If the section is contiguous, its offset should be set to | |
618 | the offset of the highest loadable section lower than it | |
619 | (the loadable section directly below it in memory). | |
620 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
621 | ||
d76488d8 | 622 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 623 | { |
82ccf5a5 | 624 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
625 | |
626 | if (sect) | |
75242ef4 | 627 | { |
c378eb4e | 628 | /* This is the index used by BFD. */ |
82ccf5a5 | 629 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
630 | |
631 | if (addrs->other[i].addr != 0) | |
75242ef4 | 632 | { |
82ccf5a5 | 633 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 634 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
635 | } |
636 | else | |
672d9c23 | 637 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
638 | } |
639 | else | |
672d9c23 | 640 | { |
1276c759 JK |
641 | /* addr_section_name transformation is not used for SECT_NAME. */ |
642 | const char *sect_name = addrs->other[i].name; | |
643 | ||
b0fcb67f JK |
644 | /* This section does not exist in ABFD, which is normally |
645 | unexpected and we want to issue a warning. | |
646 | ||
4d9743af JK |
647 | However, the ELF prelinker does create a few sections which are |
648 | marked in the main executable as loadable (they are loaded in | |
649 | memory from the DYNAMIC segment) and yet are not present in | |
650 | separate debug info files. This is fine, and should not cause | |
651 | a warning. Shared libraries contain just the section | |
652 | ".gnu.liblist" but it is not marked as loadable there. There is | |
653 | no other way to identify them than by their name as the sections | |
1276c759 JK |
654 | created by prelink have no special flags. |
655 | ||
656 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
657 | |
658 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 659 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
660 | || (strcmp (sect_name, ".bss") == 0 |
661 | && i > 0 | |
662 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
663 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
664 | || (strcmp (sect_name, ".sbss") == 0 | |
665 | && i > 0 | |
666 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
667 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
668 | warning (_("section %s not found in %s"), sect_name, |
669 | bfd_get_filename (abfd)); | |
670 | ||
672d9c23 | 671 | addrs->other[i].addr = 0; |
5488dafb | 672 | addrs->other[i].sectindex = -1; |
672d9c23 | 673 | } |
75242ef4 | 674 | } |
82ccf5a5 JK |
675 | |
676 | do_cleanups (my_cleanup); | |
75242ef4 JK |
677 | } |
678 | ||
679 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
680 | of how to represent it for fast symbol reading. This is the default | |
681 | version of the sym_fns.sym_offsets function for symbol readers that | |
682 | don't need to do anything special. It allocates a section_offsets table | |
683 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
684 | ||
685 | void | |
686 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 687 | const struct section_addr_info *addrs) |
75242ef4 | 688 | { |
d445b2f6 | 689 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
690 | objfile->section_offsets = (struct section_offsets *) |
691 | obstack_alloc (&objfile->objfile_obstack, | |
692 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
693 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
694 | objfile->num_sections, addrs); | |
e8289572 | 695 | |
c1bd25fd DJ |
696 | /* For relocatable files, all loadable sections will start at zero. |
697 | The zero is meaningless, so try to pick arbitrary addresses such | |
698 | that no loadable sections overlap. This algorithm is quadratic, | |
699 | but the number of sections in a single object file is generally | |
700 | small. */ | |
701 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
702 | { | |
703 | struct place_section_arg arg; | |
2711e456 DJ |
704 | bfd *abfd = objfile->obfd; |
705 | asection *cur_sec; | |
2711e456 DJ |
706 | |
707 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
708 | /* We do not expect this to happen; just skip this step if the | |
709 | relocatable file has a section with an assigned VMA. */ | |
710 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
711 | break; | |
712 | ||
713 | if (cur_sec == NULL) | |
714 | { | |
715 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
716 | ||
717 | /* Pick non-overlapping offsets for sections the user did not | |
718 | place explicitly. */ | |
719 | arg.offsets = objfile->section_offsets; | |
720 | arg.lowest = 0; | |
721 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
722 | ||
723 | /* Correctly filling in the section offsets is not quite | |
724 | enough. Relocatable files have two properties that | |
725 | (most) shared objects do not: | |
726 | ||
727 | - Their debug information will contain relocations. Some | |
728 | shared libraries do also, but many do not, so this can not | |
729 | be assumed. | |
730 | ||
731 | - If there are multiple code sections they will be loaded | |
732 | at different relative addresses in memory than they are | |
733 | in the objfile, since all sections in the file will start | |
734 | at address zero. | |
735 | ||
736 | Because GDB has very limited ability to map from an | |
737 | address in debug info to the correct code section, | |
738 | it relies on adding SECT_OFF_TEXT to things which might be | |
739 | code. If we clear all the section offsets, and set the | |
740 | section VMAs instead, then symfile_relocate_debug_section | |
741 | will return meaningful debug information pointing at the | |
742 | correct sections. | |
743 | ||
744 | GDB has too many different data structures for section | |
745 | addresses - a bfd, objfile, and so_list all have section | |
746 | tables, as does exec_ops. Some of these could probably | |
747 | be eliminated. */ | |
748 | ||
749 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
750 | cur_sec = cur_sec->next) | |
751 | { | |
752 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
753 | continue; | |
754 | ||
755 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
756 | exec_set_section_address (bfd_get_filename (abfd), |
757 | cur_sec->index, | |
30510692 | 758 | offsets[cur_sec->index]); |
2711e456 DJ |
759 | offsets[cur_sec->index] = 0; |
760 | } | |
761 | } | |
c1bd25fd DJ |
762 | } |
763 | ||
e8289572 | 764 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 765 | .rodata sections. */ |
e8289572 JB |
766 | init_objfile_sect_indices (objfile); |
767 | } | |
768 | ||
31d99776 DJ |
769 | /* Divide the file into segments, which are individual relocatable units. |
770 | This is the default version of the sym_fns.sym_segments function for | |
771 | symbol readers that do not have an explicit representation of segments. | |
772 | It assumes that object files do not have segments, and fully linked | |
773 | files have a single segment. */ | |
774 | ||
775 | struct symfile_segment_data * | |
776 | default_symfile_segments (bfd *abfd) | |
777 | { | |
778 | int num_sections, i; | |
779 | asection *sect; | |
780 | struct symfile_segment_data *data; | |
781 | CORE_ADDR low, high; | |
782 | ||
783 | /* Relocatable files contain enough information to position each | |
784 | loadable section independently; they should not be relocated | |
785 | in segments. */ | |
786 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
787 | return NULL; | |
788 | ||
789 | /* Make sure there is at least one loadable section in the file. */ | |
790 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
791 | { | |
792 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
793 | continue; | |
794 | ||
795 | break; | |
796 | } | |
797 | if (sect == NULL) | |
798 | return NULL; | |
799 | ||
800 | low = bfd_get_section_vma (abfd, sect); | |
801 | high = low + bfd_get_section_size (sect); | |
802 | ||
803 | data = XZALLOC (struct symfile_segment_data); | |
804 | data->num_segments = 1; | |
805 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
806 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
807 | ||
808 | num_sections = bfd_count_sections (abfd); | |
809 | data->segment_info = XCALLOC (num_sections, int); | |
810 | ||
811 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
812 | { | |
813 | CORE_ADDR vma; | |
814 | ||
815 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
816 | continue; | |
817 | ||
818 | vma = bfd_get_section_vma (abfd, sect); | |
819 | if (vma < low) | |
820 | low = vma; | |
821 | if (vma + bfd_get_section_size (sect) > high) | |
822 | high = vma + bfd_get_section_size (sect); | |
823 | ||
824 | data->segment_info[i] = 1; | |
825 | } | |
826 | ||
827 | data->segment_bases[0] = low; | |
828 | data->segment_sizes[0] = high - low; | |
829 | ||
830 | return data; | |
831 | } | |
832 | ||
608e2dbb TT |
833 | /* This is a convenience function to call sym_read for OBJFILE and |
834 | possibly force the partial symbols to be read. */ | |
835 | ||
836 | static void | |
837 | read_symbols (struct objfile *objfile, int add_flags) | |
838 | { | |
839 | (*objfile->sf->sym_read) (objfile, add_flags); | |
8a92335b JK |
840 | |
841 | /* find_separate_debug_file_in_section should be called only if there is | |
842 | single binary with no existing separate debug info file. */ | |
843 | if (!objfile_has_partial_symbols (objfile) | |
844 | && objfile->separate_debug_objfile == NULL | |
845 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb TT |
846 | { |
847 | bfd *abfd = find_separate_debug_file_in_section (objfile); | |
848 | struct cleanup *cleanup = make_cleanup_bfd_unref (abfd); | |
849 | ||
850 | if (abfd != NULL) | |
24ba069a JK |
851 | { |
852 | /* find_separate_debug_file_in_section uses the same filename for the | |
853 | virtual section-as-bfd like the bfd filename containing the | |
854 | section. Therefore use also non-canonical name form for the same | |
855 | file containing the section. */ | |
856 | symbol_file_add_separate (abfd, objfile->original_name, add_flags, | |
857 | objfile); | |
858 | } | |
608e2dbb TT |
859 | |
860 | do_cleanups (cleanup); | |
861 | } | |
862 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
863 | require_partial_symbols (objfile, 0); | |
864 | } | |
865 | ||
3d6e24f0 JB |
866 | /* Initialize entry point information for this objfile. */ |
867 | ||
868 | static void | |
869 | init_entry_point_info (struct objfile *objfile) | |
870 | { | |
871 | /* Save startup file's range of PC addresses to help blockframe.c | |
872 | decide where the bottom of the stack is. */ | |
873 | ||
874 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
875 | { | |
876 | /* Executable file -- record its entry point so we'll recognize | |
877 | the startup file because it contains the entry point. */ | |
878 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
879 | objfile->ei.entry_point_p = 1; | |
880 | } | |
881 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
882 | && bfd_get_start_address (objfile->obfd) != 0) | |
883 | { | |
884 | /* Some shared libraries may have entry points set and be | |
885 | runnable. There's no clear way to indicate this, so just check | |
886 | for values other than zero. */ | |
887 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
888 | objfile->ei.entry_point_p = 1; | |
889 | } | |
890 | else | |
891 | { | |
892 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
893 | objfile->ei.entry_point_p = 0; | |
894 | } | |
895 | ||
896 | if (objfile->ei.entry_point_p) | |
897 | { | |
898 | CORE_ADDR entry_point = objfile->ei.entry_point; | |
899 | ||
900 | /* Make certain that the address points at real code, and not a | |
901 | function descriptor. */ | |
902 | entry_point | |
df6d5441 | 903 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 JB |
904 | entry_point, |
905 | ¤t_target); | |
906 | ||
907 | /* Remove any ISA markers, so that this matches entries in the | |
908 | symbol table. */ | |
909 | objfile->ei.entry_point | |
df6d5441 | 910 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
3d6e24f0 JB |
911 | } |
912 | } | |
913 | ||
c906108c SS |
914 | /* Process a symbol file, as either the main file or as a dynamically |
915 | loaded file. | |
916 | ||
36e4d068 JB |
917 | This function does not set the OBJFILE's entry-point info. |
918 | ||
96baa820 JM |
919 | OBJFILE is where the symbols are to be read from. |
920 | ||
7e8580c1 JB |
921 | ADDRS is the list of section load addresses. If the user has given |
922 | an 'add-symbol-file' command, then this is the list of offsets and | |
923 | addresses he or she provided as arguments to the command; or, if | |
924 | we're handling a shared library, these are the actual addresses the | |
925 | sections are loaded at, according to the inferior's dynamic linker | |
926 | (as gleaned by GDB's shared library code). We convert each address | |
927 | into an offset from the section VMA's as it appears in the object | |
928 | file, and then call the file's sym_offsets function to convert this | |
929 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 930 | |
7eedccfa PP |
931 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
932 | an extra symbol file such as dynamically loaded code, and wether | |
933 | breakpoint reset should be deferred. */ | |
c906108c | 934 | |
36e4d068 JB |
935 | static void |
936 | syms_from_objfile_1 (struct objfile *objfile, | |
937 | struct section_addr_info *addrs, | |
36e4d068 | 938 | int add_flags) |
c906108c | 939 | { |
a39a16c4 | 940 | struct section_addr_info *local_addr = NULL; |
c906108c | 941 | struct cleanup *old_chain; |
7eedccfa | 942 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 943 | |
8fb8eb5c | 944 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 945 | |
75245b24 | 946 | if (objfile->sf == NULL) |
36e4d068 JB |
947 | { |
948 | /* No symbols to load, but we still need to make sure | |
949 | that the section_offsets table is allocated. */ | |
d445b2f6 | 950 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 951 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
952 | |
953 | objfile->num_sections = num_sections; | |
954 | objfile->section_offsets | |
955 | = obstack_alloc (&objfile->objfile_obstack, size); | |
956 | memset (objfile->section_offsets, 0, size); | |
957 | return; | |
958 | } | |
75245b24 | 959 | |
c906108c SS |
960 | /* Make sure that partially constructed symbol tables will be cleaned up |
961 | if an error occurs during symbol reading. */ | |
74b7792f | 962 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 963 | |
6bf667bb DE |
964 | /* If ADDRS is NULL, put together a dummy address list. |
965 | We now establish the convention that an addr of zero means | |
c378eb4e | 966 | no load address was specified. */ |
6bf667bb | 967 | if (! addrs) |
a39a16c4 | 968 | { |
d445b2f6 | 969 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
970 | make_cleanup (xfree, local_addr); |
971 | addrs = local_addr; | |
972 | } | |
973 | ||
c5aa993b | 974 | if (mainline) |
c906108c SS |
975 | { |
976 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 977 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 978 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
979 | |
980 | /* Since no error yet, throw away the old symbol table. */ | |
981 | ||
982 | if (symfile_objfile != NULL) | |
983 | { | |
984 | free_objfile (symfile_objfile); | |
adb7f338 | 985 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
986 | } |
987 | ||
988 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
989 | If the user wants to get rid of them, they should do "symbol-file" |
990 | without arguments first. Not sure this is the best behavior | |
991 | (PR 2207). */ | |
c906108c | 992 | |
c5aa993b | 993 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
994 | } |
995 | ||
996 | /* Convert addr into an offset rather than an absolute address. | |
997 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 998 | and assume that <addr> is where that got loaded. |
c906108c | 999 | |
53a5351d JM |
1000 | We no longer warn if the lowest section is not a text segment (as |
1001 | happens for the PA64 port. */ | |
6bf667bb | 1002 | if (addrs->num_sections > 0) |
75242ef4 | 1003 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1004 | |
1005 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1006 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1007 | initial symbol reading for this file. */ |
c906108c | 1008 | |
c5aa993b | 1009 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1010 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1011 | |
6bf667bb | 1012 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1013 | |
608e2dbb | 1014 | read_symbols (objfile, add_flags); |
b11896a5 | 1015 | |
c906108c SS |
1016 | /* Discard cleanups as symbol reading was successful. */ |
1017 | ||
1018 | discard_cleanups (old_chain); | |
f7545552 | 1019 | xfree (local_addr); |
c906108c SS |
1020 | } |
1021 | ||
36e4d068 JB |
1022 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1023 | entry-point info. */ | |
1024 | ||
6bf667bb | 1025 | static void |
36e4d068 JB |
1026 | syms_from_objfile (struct objfile *objfile, |
1027 | struct section_addr_info *addrs, | |
36e4d068 JB |
1028 | int add_flags) |
1029 | { | |
6bf667bb | 1030 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1031 | init_entry_point_info (objfile); |
1032 | } | |
1033 | ||
c906108c SS |
1034 | /* Perform required actions after either reading in the initial |
1035 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1036 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1037 | |
c906108c | 1038 | void |
7eedccfa | 1039 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1040 | { |
c906108c | 1041 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1042 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1043 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1044 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1045 | { |
1046 | /* OK, make it the "real" symbol file. */ | |
1047 | symfile_objfile = objfile; | |
1048 | ||
c1e56572 | 1049 | clear_symtab_users (add_flags); |
c906108c | 1050 | } |
7eedccfa | 1051 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1052 | { |
69de3c6a | 1053 | breakpoint_re_set (); |
c906108c SS |
1054 | } |
1055 | ||
1056 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1057 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1058 | } |
1059 | ||
1060 | /* Process a symbol file, as either the main file or as a dynamically | |
1061 | loaded file. | |
1062 | ||
5417f6dc | 1063 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1064 | A new reference is acquired by this function. |
7904e09f | 1065 | |
24ba069a JK |
1066 | For NAME description see allocate_objfile's definition. |
1067 | ||
7eedccfa PP |
1068 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1069 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1070 | |
6bf667bb | 1071 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1072 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1073 | |
63524580 JK |
1074 | PARENT is the original objfile if ABFD is a separate debug info file. |
1075 | Otherwise PARENT is NULL. | |
1076 | ||
c906108c | 1077 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1078 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1079 | |
7904e09f | 1080 | static struct objfile * |
24ba069a | 1081 | symbol_file_add_with_addrs (bfd *abfd, const char *name, int add_flags, |
6bf667bb DE |
1082 | struct section_addr_info *addrs, |
1083 | int flags, struct objfile *parent) | |
c906108c SS |
1084 | { |
1085 | struct objfile *objfile; | |
7eedccfa | 1086 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1087 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1088 | const int should_print = ((from_tty || info_verbose) |
1089 | && (readnow_symbol_files | |
1090 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1091 | |
9291a0cd | 1092 | if (readnow_symbol_files) |
b11896a5 TT |
1093 | { |
1094 | flags |= OBJF_READNOW; | |
1095 | add_flags &= ~SYMFILE_NO_READ; | |
1096 | } | |
9291a0cd | 1097 | |
5417f6dc RM |
1098 | /* Give user a chance to burp if we'd be |
1099 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1100 | |
1101 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1102 | && mainline |
c906108c | 1103 | && from_tty |
9e2f0ad4 | 1104 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1105 | error (_("Not confirmed.")); |
c906108c | 1106 | |
24ba069a JK |
1107 | objfile = allocate_objfile (abfd, name, |
1108 | flags | (mainline ? OBJF_MAINLINE : 0)); | |
c906108c | 1109 | |
63524580 JK |
1110 | if (parent) |
1111 | add_separate_debug_objfile (objfile, parent); | |
1112 | ||
78a4a9b9 AC |
1113 | /* We either created a new mapped symbol table, mapped an existing |
1114 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1115 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1116 | if (should_print) |
c906108c | 1117 | { |
769d7dc4 AC |
1118 | if (deprecated_pre_add_symbol_hook) |
1119 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1120 | else |
c906108c | 1121 | { |
55333a84 DE |
1122 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1123 | wrap_here (""); | |
1124 | gdb_flush (gdb_stdout); | |
c906108c | 1125 | } |
c906108c | 1126 | } |
6bf667bb | 1127 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1128 | |
1129 | /* We now have at least a partial symbol table. Check to see if the | |
1130 | user requested that all symbols be read on initial access via either | |
1131 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1132 | all partial symbol tables for this objfile if so. */ |
c906108c | 1133 | |
9291a0cd | 1134 | if ((flags & OBJF_READNOW)) |
c906108c | 1135 | { |
b11896a5 | 1136 | if (should_print) |
c906108c | 1137 | { |
a3f17187 | 1138 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1139 | wrap_here (""); |
1140 | gdb_flush (gdb_stdout); | |
1141 | } | |
1142 | ||
ccefe4c4 TT |
1143 | if (objfile->sf) |
1144 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1145 | } |
1146 | ||
b11896a5 | 1147 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1148 | { |
1149 | wrap_here (""); | |
55333a84 | 1150 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1151 | wrap_here (""); |
1152 | } | |
1153 | ||
b11896a5 | 1154 | if (should_print) |
c906108c | 1155 | { |
769d7dc4 AC |
1156 | if (deprecated_post_add_symbol_hook) |
1157 | deprecated_post_add_symbol_hook (); | |
c906108c | 1158 | else |
55333a84 | 1159 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1160 | } |
1161 | ||
481d0f41 JB |
1162 | /* We print some messages regardless of whether 'from_tty || |
1163 | info_verbose' is true, so make sure they go out at the right | |
1164 | time. */ | |
1165 | gdb_flush (gdb_stdout); | |
1166 | ||
109f874e | 1167 | if (objfile->sf == NULL) |
8caee43b PP |
1168 | { |
1169 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1170 | return objfile; /* No symbols. */ |
8caee43b | 1171 | } |
109f874e | 1172 | |
7eedccfa | 1173 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1174 | |
06d3b283 | 1175 | observer_notify_new_objfile (objfile); |
c906108c | 1176 | |
ce7d4522 | 1177 | bfd_cache_close_all (); |
c906108c SS |
1178 | return (objfile); |
1179 | } | |
1180 | ||
24ba069a JK |
1181 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
1182 | see allocate_objfile's definition. */ | |
9cce227f TG |
1183 | |
1184 | void | |
24ba069a JK |
1185 | symbol_file_add_separate (bfd *bfd, const char *name, int symfile_flags, |
1186 | struct objfile *objfile) | |
9cce227f | 1187 | { |
15d123c9 | 1188 | struct objfile *new_objfile; |
089b4803 TG |
1189 | struct section_addr_info *sap; |
1190 | struct cleanup *my_cleanup; | |
1191 | ||
1192 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1193 | because sections of BFD may not match sections of OBJFILE and because | |
1194 | vma may have been modified by tools such as prelink. */ | |
1195 | sap = build_section_addr_info_from_objfile (objfile); | |
1196 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1197 | |
6bf667bb | 1198 | new_objfile = symbol_file_add_with_addrs |
24ba069a | 1199 | (bfd, name, symfile_flags, sap, |
9cce227f | 1200 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1201 | | OBJF_USERLOADED), |
1202 | objfile); | |
089b4803 TG |
1203 | |
1204 | do_cleanups (my_cleanup); | |
9cce227f | 1205 | } |
7904e09f | 1206 | |
eb4556d7 JB |
1207 | /* Process the symbol file ABFD, as either the main file or as a |
1208 | dynamically loaded file. | |
6bf667bb | 1209 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1210 | |
eb4556d7 | 1211 | struct objfile * |
24ba069a | 1212 | symbol_file_add_from_bfd (bfd *abfd, const char *name, int add_flags, |
eb4556d7 | 1213 | struct section_addr_info *addrs, |
63524580 | 1214 | int flags, struct objfile *parent) |
eb4556d7 | 1215 | { |
24ba069a JK |
1216 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1217 | parent); | |
eb4556d7 JB |
1218 | } |
1219 | ||
7904e09f | 1220 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1221 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1222 | |
7904e09f | 1223 | struct objfile * |
69150c3d JK |
1224 | symbol_file_add (const char *name, int add_flags, |
1225 | struct section_addr_info *addrs, int flags) | |
7904e09f | 1226 | { |
8ac244b4 TT |
1227 | bfd *bfd = symfile_bfd_open (name); |
1228 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1229 | struct objfile *objf; | |
1230 | ||
24ba069a | 1231 | objf = symbol_file_add_from_bfd (bfd, name, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1232 | do_cleanups (cleanup); |
1233 | return objf; | |
7904e09f JB |
1234 | } |
1235 | ||
d7db6da9 FN |
1236 | /* Call symbol_file_add() with default values and update whatever is |
1237 | affected by the loading of a new main(). | |
1238 | Used when the file is supplied in the gdb command line | |
1239 | and by some targets with special loading requirements. | |
1240 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1241 | argument for the switches that can only be specified in the symbol_file | |
1242 | command itself. */ | |
5417f6dc | 1243 | |
1adeb98a | 1244 | void |
69150c3d | 1245 | symbol_file_add_main (const char *args, int from_tty) |
1adeb98a | 1246 | { |
d7db6da9 FN |
1247 | symbol_file_add_main_1 (args, from_tty, 0); |
1248 | } | |
1249 | ||
1250 | static void | |
69150c3d | 1251 | symbol_file_add_main_1 (const char *args, int from_tty, int flags) |
d7db6da9 | 1252 | { |
7dcd53a0 TT |
1253 | const int add_flags = (current_inferior ()->symfile_flags |
1254 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1255 | ||
7eedccfa | 1256 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1257 | |
d7db6da9 FN |
1258 | /* Getting new symbols may change our opinion about |
1259 | what is frameless. */ | |
1260 | reinit_frame_cache (); | |
1261 | ||
7dcd53a0 TT |
1262 | if ((flags & SYMFILE_NO_READ) == 0) |
1263 | set_initial_language (); | |
1adeb98a FN |
1264 | } |
1265 | ||
1266 | void | |
1267 | symbol_file_clear (int from_tty) | |
1268 | { | |
1269 | if ((have_full_symbols () || have_partial_symbols ()) | |
1270 | && from_tty | |
0430b0d6 AS |
1271 | && (symfile_objfile |
1272 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1273 | objfile_name (symfile_objfile)) |
0430b0d6 | 1274 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1275 | error (_("Not confirmed.")); |
1adeb98a | 1276 | |
0133421a JK |
1277 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1278 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1279 | no_shared_libraries (NULL, from_tty); |
1280 | ||
0133421a JK |
1281 | free_all_objfiles (); |
1282 | ||
adb7f338 | 1283 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1284 | if (from_tty) |
1285 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1286 | } |
1287 | ||
5b5d99cf | 1288 | static int |
287ccc17 | 1289 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1290 | struct objfile *parent_objfile) |
5b5d99cf | 1291 | { |
904578ed JK |
1292 | unsigned long file_crc; |
1293 | int file_crc_p; | |
f1838a98 | 1294 | bfd *abfd; |
32a0e547 | 1295 | struct stat parent_stat, abfd_stat; |
904578ed | 1296 | int verified_as_different; |
32a0e547 JK |
1297 | |
1298 | /* Find a separate debug info file as if symbols would be present in | |
1299 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1300 | section can contain just the basename of PARENT_OBJFILE without any | |
1301 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1302 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1303 | |
4262abfb | 1304 | if (filename_cmp (name, objfile_name (parent_objfile)) == 0) |
32a0e547 | 1305 | return 0; |
5b5d99cf | 1306 | |
08d2cd74 | 1307 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1308 | |
1309 | if (!abfd) | |
5b5d99cf JB |
1310 | return 0; |
1311 | ||
0ba1096a | 1312 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1313 | |
1314 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1315 | st_ino; they always set it to zero. (Windows does provide a | |
1316 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1317 | case. While there is no guarantee that a system that provides | |
1318 | meaningful inode numbers will never set st_ino to zero, this is | |
1319 | merely an optimization, so we do not need to worry about false | |
1320 | negatives. */ | |
1321 | ||
1322 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1323 | && abfd_stat.st_ino != 0 |
1324 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1325 | { |
904578ed JK |
1326 | if (abfd_stat.st_dev == parent_stat.st_dev |
1327 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1328 | { | |
cbb099e8 | 1329 | gdb_bfd_unref (abfd); |
904578ed JK |
1330 | return 0; |
1331 | } | |
1332 | verified_as_different = 1; | |
32a0e547 | 1333 | } |
904578ed JK |
1334 | else |
1335 | verified_as_different = 0; | |
32a0e547 | 1336 | |
dccee2de | 1337 | file_crc_p = gdb_bfd_crc (abfd, &file_crc); |
5b5d99cf | 1338 | |
cbb099e8 | 1339 | gdb_bfd_unref (abfd); |
5b5d99cf | 1340 | |
904578ed JK |
1341 | if (!file_crc_p) |
1342 | return 0; | |
1343 | ||
287ccc17 JK |
1344 | if (crc != file_crc) |
1345 | { | |
dccee2de TT |
1346 | unsigned long parent_crc; |
1347 | ||
904578ed JK |
1348 | /* If one (or both) the files are accessed for example the via "remote:" |
1349 | gdbserver way it does not support the bfd_stat operation. Verify | |
1350 | whether those two files are not the same manually. */ | |
1351 | ||
dccee2de | 1352 | if (!verified_as_different) |
904578ed | 1353 | { |
dccee2de | 1354 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1355 | return 0; |
1356 | } | |
1357 | ||
dccee2de | 1358 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1359 | warning (_("the debug information found in \"%s\"" |
1360 | " does not match \"%s\" (CRC mismatch).\n"), | |
4262abfb | 1361 | name, objfile_name (parent_objfile)); |
904578ed | 1362 | |
287ccc17 JK |
1363 | return 0; |
1364 | } | |
1365 | ||
1366 | return 1; | |
5b5d99cf JB |
1367 | } |
1368 | ||
aa28a74e | 1369 | char *debug_file_directory = NULL; |
920d2a44 AC |
1370 | static void |
1371 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1372 | struct cmd_list_element *c, const char *value) | |
1373 | { | |
3e43a32a MS |
1374 | fprintf_filtered (file, |
1375 | _("The directory where separate debug " | |
1376 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1377 | value); |
1378 | } | |
5b5d99cf JB |
1379 | |
1380 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1381 | #define DEBUG_SUBDIRECTORY ".debug" | |
1382 | #endif | |
1383 | ||
1db33378 PP |
1384 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1385 | where the original file resides (may not be the same as | |
1386 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1387 | looking for. CANON_DIR is the "realpath" form of DIR. |
1388 | DIR must contain a trailing '/'. | |
1389 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1390 | |
1391 | static char * | |
1392 | find_separate_debug_file (const char *dir, | |
1393 | const char *canon_dir, | |
1394 | const char *debuglink, | |
1395 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1396 | { |
1db33378 PP |
1397 | char *debugdir; |
1398 | char *debugfile; | |
9cce227f | 1399 | int i; |
e4ab2fad JK |
1400 | VEC (char_ptr) *debugdir_vec; |
1401 | struct cleanup *back_to; | |
1402 | int ix; | |
5b5d99cf | 1403 | |
1db33378 | 1404 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1405 | i = strlen (dir); |
1db33378 PP |
1406 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1407 | i = strlen (canon_dir); | |
1ffa32ee | 1408 | |
25522fae JK |
1409 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1410 | + i | |
1411 | + strlen (DEBUG_SUBDIRECTORY) | |
1412 | + strlen ("/") | |
1db33378 | 1413 | + strlen (debuglink) |
25522fae | 1414 | + 1); |
5b5d99cf JB |
1415 | |
1416 | /* First try in the same directory as the original file. */ | |
1417 | strcpy (debugfile, dir); | |
1db33378 | 1418 | strcat (debugfile, debuglink); |
5b5d99cf | 1419 | |
32a0e547 | 1420 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1421 | return debugfile; |
5417f6dc | 1422 | |
5b5d99cf JB |
1423 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1424 | strcpy (debugfile, dir); | |
1425 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1426 | strcat (debugfile, "/"); | |
1db33378 | 1427 | strcat (debugfile, debuglink); |
5b5d99cf | 1428 | |
32a0e547 | 1429 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1430 | return debugfile; |
5417f6dc | 1431 | |
24ddea62 | 1432 | /* Then try in the global debugfile directories. |
f888f159 | 1433 | |
24ddea62 JK |
1434 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1435 | cause "/..." lookups. */ | |
5417f6dc | 1436 | |
e4ab2fad JK |
1437 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1438 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1439 | |
e4ab2fad JK |
1440 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1441 | { | |
1442 | strcpy (debugfile, debugdir); | |
aa28a74e | 1443 | strcat (debugfile, "/"); |
24ddea62 | 1444 | strcat (debugfile, dir); |
1db33378 | 1445 | strcat (debugfile, debuglink); |
aa28a74e | 1446 | |
32a0e547 | 1447 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1448 | { |
1449 | do_cleanups (back_to); | |
1450 | return debugfile; | |
1451 | } | |
24ddea62 JK |
1452 | |
1453 | /* If the file is in the sysroot, try using its base path in the | |
1454 | global debugfile directory. */ | |
1db33378 PP |
1455 | if (canon_dir != NULL |
1456 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1457 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1458 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1459 | { |
e4ab2fad | 1460 | strcpy (debugfile, debugdir); |
1db33378 | 1461 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1462 | strcat (debugfile, "/"); |
1db33378 | 1463 | strcat (debugfile, debuglink); |
24ddea62 | 1464 | |
32a0e547 | 1465 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
a991ac28 TT |
1466 | { |
1467 | do_cleanups (back_to); | |
1468 | return debugfile; | |
1469 | } | |
24ddea62 | 1470 | } |
aa28a74e | 1471 | } |
f888f159 | 1472 | |
e4ab2fad | 1473 | do_cleanups (back_to); |
25522fae | 1474 | xfree (debugfile); |
1db33378 PP |
1475 | return NULL; |
1476 | } | |
1477 | ||
7edbb660 | 1478 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1479 | If there were no directory separators in PATH, PATH will be empty |
1480 | string on return. */ | |
1481 | ||
1482 | static void | |
1483 | terminate_after_last_dir_separator (char *path) | |
1484 | { | |
1485 | int i; | |
1486 | ||
1487 | /* Strip off the final filename part, leaving the directory name, | |
1488 | followed by a slash. The directory can be relative or absolute. */ | |
1489 | for (i = strlen(path) - 1; i >= 0; i--) | |
1490 | if (IS_DIR_SEPARATOR (path[i])) | |
1491 | break; | |
1492 | ||
1493 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1494 | path[i + 1] = '\0'; | |
1495 | } | |
1496 | ||
1497 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1498 | Returns pathname, or NULL. */ | |
1499 | ||
1500 | char * | |
1501 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1502 | { | |
1503 | char *debuglink; | |
1504 | char *dir, *canon_dir; | |
1505 | char *debugfile; | |
1506 | unsigned long crc32; | |
1507 | struct cleanup *cleanups; | |
1508 | ||
cc0ea93c | 1509 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1510 | |
1511 | if (debuglink == NULL) | |
1512 | { | |
1513 | /* There's no separate debug info, hence there's no way we could | |
1514 | load it => no warning. */ | |
1515 | return NULL; | |
1516 | } | |
1517 | ||
71bdabee | 1518 | cleanups = make_cleanup (xfree, debuglink); |
4262abfb | 1519 | dir = xstrdup (objfile_name (objfile)); |
71bdabee | 1520 | make_cleanup (xfree, dir); |
1db33378 PP |
1521 | terminate_after_last_dir_separator (dir); |
1522 | canon_dir = lrealpath (dir); | |
1523 | ||
1524 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1525 | crc32, objfile); | |
1526 | xfree (canon_dir); | |
1527 | ||
1528 | if (debugfile == NULL) | |
1529 | { | |
1530 | #ifdef HAVE_LSTAT | |
1531 | /* For PR gdb/9538, try again with realpath (if different from the | |
1532 | original). */ | |
1533 | ||
1534 | struct stat st_buf; | |
1535 | ||
4262abfb JK |
1536 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1537 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 PP |
1538 | { |
1539 | char *symlink_dir; | |
1540 | ||
4262abfb | 1541 | symlink_dir = lrealpath (objfile_name (objfile)); |
1db33378 PP |
1542 | if (symlink_dir != NULL) |
1543 | { | |
1544 | make_cleanup (xfree, symlink_dir); | |
1545 | terminate_after_last_dir_separator (symlink_dir); | |
1546 | if (strcmp (dir, symlink_dir) != 0) | |
1547 | { | |
1548 | /* Different directory, so try using it. */ | |
1549 | debugfile = find_separate_debug_file (symlink_dir, | |
1550 | symlink_dir, | |
1551 | debuglink, | |
1552 | crc32, | |
1553 | objfile); | |
1554 | } | |
1555 | } | |
1556 | } | |
1557 | #endif /* HAVE_LSTAT */ | |
1558 | } | |
aa28a74e | 1559 | |
1db33378 | 1560 | do_cleanups (cleanups); |
25522fae | 1561 | return debugfile; |
5b5d99cf JB |
1562 | } |
1563 | ||
c906108c SS |
1564 | /* This is the symbol-file command. Read the file, analyze its |
1565 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1566 | the command is rather bizarre: |
1567 | ||
1568 | 1. The function buildargv implements various quoting conventions | |
1569 | which are undocumented and have little or nothing in common with | |
1570 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1571 | ||
1572 | 2. Options are used, which are not generally used in GDB (perhaps | |
1573 | "set mapped on", "set readnow on" would be better) | |
1574 | ||
1575 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1576 | conventions (because it is confusing and inconvenient). */ |
1577 | ||
1578 | void | |
fba45db2 | 1579 | symbol_file_command (char *args, int from_tty) |
c906108c | 1580 | { |
c906108c SS |
1581 | dont_repeat (); |
1582 | ||
1583 | if (args == NULL) | |
1584 | { | |
1adeb98a | 1585 | symbol_file_clear (from_tty); |
c906108c SS |
1586 | } |
1587 | else | |
1588 | { | |
d1a41061 | 1589 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1590 | int flags = OBJF_USERLOADED; |
1591 | struct cleanup *cleanups; | |
1592 | char *name = NULL; | |
1593 | ||
7a292a7a | 1594 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1595 | while (*argv != NULL) |
1596 | { | |
78a4a9b9 AC |
1597 | if (strcmp (*argv, "-readnow") == 0) |
1598 | flags |= OBJF_READNOW; | |
1599 | else if (**argv == '-') | |
8a3fe4f8 | 1600 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1601 | else |
1602 | { | |
cb2f3a29 | 1603 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1604 | name = *argv; |
78a4a9b9 | 1605 | } |
cb2f3a29 | 1606 | |
c906108c SS |
1607 | argv++; |
1608 | } | |
1609 | ||
1610 | if (name == NULL) | |
cb2f3a29 MK |
1611 | error (_("no symbol file name was specified")); |
1612 | ||
c906108c SS |
1613 | do_cleanups (cleanups); |
1614 | } | |
1615 | } | |
1616 | ||
1617 | /* Set the initial language. | |
1618 | ||
cb2f3a29 MK |
1619 | FIXME: A better solution would be to record the language in the |
1620 | psymtab when reading partial symbols, and then use it (if known) to | |
1621 | set the language. This would be a win for formats that encode the | |
1622 | language in an easily discoverable place, such as DWARF. For | |
1623 | stabs, we can jump through hoops looking for specially named | |
1624 | symbols or try to intuit the language from the specific type of | |
1625 | stabs we find, but we can't do that until later when we read in | |
1626 | full symbols. */ | |
c906108c | 1627 | |
8b60591b | 1628 | void |
fba45db2 | 1629 | set_initial_language (void) |
c906108c | 1630 | { |
c5aa993b | 1631 | enum language lang = language_unknown; |
c906108c | 1632 | |
01f8c46d JK |
1633 | if (language_of_main != language_unknown) |
1634 | lang = language_of_main; | |
1635 | else | |
1636 | { | |
bf6d8a91 TT |
1637 | char *name = main_name (); |
1638 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL); | |
f888f159 | 1639 | |
bf6d8a91 TT |
1640 | if (sym != NULL) |
1641 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1642 | } |
cb2f3a29 | 1643 | |
ccefe4c4 TT |
1644 | if (lang == language_unknown) |
1645 | { | |
1646 | /* Make C the default language */ | |
1647 | lang = language_c; | |
c906108c | 1648 | } |
ccefe4c4 TT |
1649 | |
1650 | set_language (lang); | |
1651 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1652 | } |
1653 | ||
874f5765 | 1654 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1655 | open it normally. Returns a new reference to the BFD. On error, |
1656 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1657 | |
1658 | bfd * | |
08d2cd74 | 1659 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1660 | { |
520b0001 TT |
1661 | bfd *result; |
1662 | ||
874f5765 | 1663 | if (remote_filename_p (name)) |
520b0001 | 1664 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1665 | else |
1c00ec6b | 1666 | result = gdb_bfd_open (name, gnutarget, -1); |
520b0001 | 1667 | |
520b0001 | 1668 | return result; |
874f5765 TG |
1669 | } |
1670 | ||
cb2f3a29 MK |
1671 | /* Open the file specified by NAME and hand it off to BFD for |
1672 | preliminary analysis. Return a newly initialized bfd *, which | |
1673 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1674 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1675 | |
1676 | bfd * | |
69150c3d | 1677 | symfile_bfd_open (const char *cname) |
c906108c SS |
1678 | { |
1679 | bfd *sym_bfd; | |
1680 | int desc; | |
69150c3d | 1681 | char *name, *absolute_name; |
faab9922 | 1682 | struct cleanup *back_to; |
c906108c | 1683 | |
69150c3d | 1684 | if (remote_filename_p (cname)) |
f1838a98 | 1685 | { |
69150c3d | 1686 | sym_bfd = remote_bfd_open (cname, gnutarget); |
f1838a98 | 1687 | if (!sym_bfd) |
69150c3d | 1688 | error (_("`%s': can't open to read symbols: %s."), cname, |
a4453b7e | 1689 | bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
1690 | |
1691 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1692 | { | |
f9a062ff | 1693 | make_cleanup_bfd_unref (sym_bfd); |
69150c3d | 1694 | error (_("`%s': can't read symbols: %s."), cname, |
f1838a98 UW |
1695 | bfd_errmsg (bfd_get_error ())); |
1696 | } | |
1697 | ||
1698 | return sym_bfd; | |
1699 | } | |
1700 | ||
69150c3d | 1701 | name = tilde_expand (cname); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1702 | |
1703 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
492c0ab7 | 1704 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, name, |
fbdebf46 | 1705 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1706 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1707 | if (desc < 0) |
1708 | { | |
1709 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1710 | |
c906108c | 1711 | strcat (strcpy (exename, name), ".exe"); |
492c0ab7 JK |
1712 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, |
1713 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
c906108c SS |
1714 | } |
1715 | #endif | |
1716 | if (desc < 0) | |
1717 | { | |
b8c9b27d | 1718 | make_cleanup (xfree, name); |
c906108c SS |
1719 | perror_with_name (name); |
1720 | } | |
cb2f3a29 | 1721 | |
cb2f3a29 MK |
1722 | xfree (name); |
1723 | name = absolute_name; | |
faab9922 | 1724 | back_to = make_cleanup (xfree, name); |
c906108c | 1725 | |
1c00ec6b | 1726 | sym_bfd = gdb_bfd_open (name, gnutarget, desc); |
c906108c | 1727 | if (!sym_bfd) |
faab9922 JK |
1728 | error (_("`%s': can't open to read symbols: %s."), name, |
1729 | bfd_errmsg (bfd_get_error ())); | |
549c1eea | 1730 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1731 | |
1732 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1733 | { | |
f9a062ff | 1734 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1735 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1736 | bfd_errmsg (bfd_get_error ())); |
1737 | } | |
cb2f3a29 | 1738 | |
faab9922 JK |
1739 | do_cleanups (back_to); |
1740 | ||
cb2f3a29 | 1741 | return sym_bfd; |
c906108c SS |
1742 | } |
1743 | ||
cb2f3a29 MK |
1744 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1745 | the section was not found. */ | |
1746 | ||
0e931cf0 JB |
1747 | int |
1748 | get_section_index (struct objfile *objfile, char *section_name) | |
1749 | { | |
1750 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1751 | |
0e931cf0 JB |
1752 | if (sect) |
1753 | return sect->index; | |
1754 | else | |
1755 | return -1; | |
1756 | } | |
1757 | ||
c256e171 DE |
1758 | /* Link SF into the global symtab_fns list. |
1759 | FLAVOUR is the file format that SF handles. | |
1760 | Called on startup by the _initialize routine in each object file format | |
1761 | reader, to register information about each format the reader is prepared | |
1762 | to handle. */ | |
c906108c SS |
1763 | |
1764 | void | |
c256e171 | 1765 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1766 | { |
c256e171 DE |
1767 | registered_sym_fns fns = { flavour, sf }; |
1768 | ||
1769 | VEC_safe_push (registered_sym_fns, symtab_fns, &fns); | |
c906108c SS |
1770 | } |
1771 | ||
cb2f3a29 MK |
1772 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1773 | either returns or calls error(). The result is an initialized | |
1774 | struct sym_fns in the objfile structure, that contains cached | |
1775 | information about the symbol file. */ | |
c906108c | 1776 | |
00b5771c | 1777 | static const struct sym_fns * |
31d99776 | 1778 | find_sym_fns (bfd *abfd) |
c906108c | 1779 | { |
c256e171 | 1780 | registered_sym_fns *rsf; |
31d99776 | 1781 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1782 | int i; |
c906108c | 1783 | |
75245b24 MS |
1784 | if (our_flavour == bfd_target_srec_flavour |
1785 | || our_flavour == bfd_target_ihex_flavour | |
1786 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1787 | return NULL; /* No symbols. */ |
75245b24 | 1788 | |
c256e171 DE |
1789 | for (i = 0; VEC_iterate (registered_sym_fns, symtab_fns, i, rsf); ++i) |
1790 | if (our_flavour == rsf->sym_flavour) | |
1791 | return rsf->sym_fns; | |
cb2f3a29 | 1792 | |
8a3fe4f8 | 1793 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1794 | bfd_get_target (abfd)); |
c906108c SS |
1795 | } |
1796 | \f | |
cb2f3a29 | 1797 | |
c906108c SS |
1798 | /* This function runs the load command of our current target. */ |
1799 | ||
1800 | static void | |
fba45db2 | 1801 | load_command (char *arg, int from_tty) |
c906108c | 1802 | { |
5b3fca71 TT |
1803 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1804 | ||
e5cc9f32 JB |
1805 | dont_repeat (); |
1806 | ||
4487aabf PA |
1807 | /* The user might be reloading because the binary has changed. Take |
1808 | this opportunity to check. */ | |
1809 | reopen_exec_file (); | |
1810 | reread_symbols (); | |
1811 | ||
c906108c | 1812 | if (arg == NULL) |
1986bccd AS |
1813 | { |
1814 | char *parg; | |
1815 | int count = 0; | |
1816 | ||
1817 | parg = arg = get_exec_file (1); | |
1818 | ||
1819 | /* Count how many \ " ' tab space there are in the name. */ | |
1820 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1821 | { | |
1822 | parg++; | |
1823 | count++; | |
1824 | } | |
1825 | ||
1826 | if (count) | |
1827 | { | |
1828 | /* We need to quote this string so buildargv can pull it apart. */ | |
1829 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1830 | char *ptemp = temp; | |
1831 | char *prev; | |
1832 | ||
1833 | make_cleanup (xfree, temp); | |
1834 | ||
1835 | prev = parg = arg; | |
1836 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1837 | { | |
1838 | strncpy (ptemp, prev, parg - prev); | |
1839 | ptemp += parg - prev; | |
1840 | prev = parg++; | |
1841 | *ptemp++ = '\\'; | |
1842 | } | |
1843 | strcpy (ptemp, prev); | |
1844 | ||
1845 | arg = temp; | |
1846 | } | |
1847 | } | |
1848 | ||
c906108c | 1849 | target_load (arg, from_tty); |
2889e661 JB |
1850 | |
1851 | /* After re-loading the executable, we don't really know which | |
1852 | overlays are mapped any more. */ | |
1853 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1854 | |
1855 | do_cleanups (cleanup); | |
c906108c SS |
1856 | } |
1857 | ||
1858 | /* This version of "load" should be usable for any target. Currently | |
1859 | it is just used for remote targets, not inftarg.c or core files, | |
1860 | on the theory that only in that case is it useful. | |
1861 | ||
1862 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1863 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1864 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1865 | performance compares. */ | |
917317f4 | 1866 | |
917317f4 JM |
1867 | static int validate_download = 0; |
1868 | ||
e4f9b4d5 MS |
1869 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1870 | ||
1871 | static void | |
1872 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1873 | { | |
1874 | bfd_size_type *sum = data; | |
1875 | ||
2c500098 | 1876 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1877 | } |
1878 | ||
1879 | /* Opaque data for load_section_callback. */ | |
1880 | struct load_section_data { | |
f698ca8e | 1881 | CORE_ADDR load_offset; |
a76d924d DJ |
1882 | struct load_progress_data *progress_data; |
1883 | VEC(memory_write_request_s) *requests; | |
1884 | }; | |
1885 | ||
1886 | /* Opaque data for load_progress. */ | |
1887 | struct load_progress_data { | |
1888 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1889 | unsigned long write_count; |
1890 | unsigned long data_count; | |
1891 | bfd_size_type total_size; | |
a76d924d DJ |
1892 | }; |
1893 | ||
1894 | /* Opaque data for load_progress for a single section. */ | |
1895 | struct load_progress_section_data { | |
1896 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1897 | |
a76d924d | 1898 | /* Per-section data. */ |
cf7a04e8 DJ |
1899 | const char *section_name; |
1900 | ULONGEST section_sent; | |
1901 | ULONGEST section_size; | |
1902 | CORE_ADDR lma; | |
1903 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1904 | }; |
1905 | ||
a76d924d | 1906 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1907 | |
1908 | static void | |
1909 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1910 | { | |
a76d924d DJ |
1911 | struct load_progress_section_data *args = untyped_arg; |
1912 | struct load_progress_data *totals; | |
1913 | ||
1914 | if (args == NULL) | |
1915 | /* Writing padding data. No easy way to get at the cumulative | |
1916 | stats, so just ignore this. */ | |
1917 | return; | |
1918 | ||
1919 | totals = args->cumulative; | |
1920 | ||
1921 | if (bytes == 0 && args->section_sent == 0) | |
1922 | { | |
1923 | /* The write is just starting. Let the user know we've started | |
1924 | this section. */ | |
79a45e25 | 1925 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 | 1926 | args->section_name, hex_string (args->section_size), |
f5656ead | 1927 | paddress (target_gdbarch (), args->lma)); |
a76d924d DJ |
1928 | return; |
1929 | } | |
cf7a04e8 DJ |
1930 | |
1931 | if (validate_download) | |
1932 | { | |
1933 | /* Broken memories and broken monitors manifest themselves here | |
1934 | when bring new computers to life. This doubles already slow | |
1935 | downloads. */ | |
1936 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1937 | might add a verify_memory() method to the target vector and | |
1938 | then use that. remote.c could implement that method using | |
1939 | the ``qCRC'' packet. */ | |
1940 | gdb_byte *check = xmalloc (bytes); | |
1941 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1942 | ||
1943 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 1944 | error (_("Download verify read failed at %s"), |
f5656ead | 1945 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1946 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 1947 | error (_("Download verify compare failed at %s"), |
f5656ead | 1948 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
1949 | do_cleanups (verify_cleanups); |
1950 | } | |
a76d924d | 1951 | totals->data_count += bytes; |
cf7a04e8 DJ |
1952 | args->lma += bytes; |
1953 | args->buffer += bytes; | |
a76d924d | 1954 | totals->write_count += 1; |
cf7a04e8 | 1955 | args->section_sent += bytes; |
522002f9 | 1956 | if (check_quit_flag () |
cf7a04e8 DJ |
1957 | || (deprecated_ui_load_progress_hook != NULL |
1958 | && deprecated_ui_load_progress_hook (args->section_name, | |
1959 | args->section_sent))) | |
1960 | error (_("Canceled the download")); | |
1961 | ||
1962 | if (deprecated_show_load_progress != NULL) | |
1963 | deprecated_show_load_progress (args->section_name, | |
1964 | args->section_sent, | |
1965 | args->section_size, | |
a76d924d DJ |
1966 | totals->data_count, |
1967 | totals->total_size); | |
cf7a04e8 DJ |
1968 | } |
1969 | ||
e4f9b4d5 MS |
1970 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1971 | ||
1972 | static void | |
1973 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1974 | { | |
a76d924d | 1975 | struct memory_write_request *new_request; |
e4f9b4d5 | 1976 | struct load_section_data *args = data; |
a76d924d | 1977 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1978 | bfd_size_type size = bfd_get_section_size (asec); |
1979 | gdb_byte *buffer; | |
cf7a04e8 | 1980 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1981 | |
cf7a04e8 DJ |
1982 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1983 | return; | |
e4f9b4d5 | 1984 | |
cf7a04e8 DJ |
1985 | if (size == 0) |
1986 | return; | |
e4f9b4d5 | 1987 | |
a76d924d DJ |
1988 | new_request = VEC_safe_push (memory_write_request_s, |
1989 | args->requests, NULL); | |
1990 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1991 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1992 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
1993 | new_request->end = new_request->begin + size; /* FIXME Should size |
1994 | be in instead? */ | |
a76d924d DJ |
1995 | new_request->data = xmalloc (size); |
1996 | new_request->baton = section_data; | |
cf7a04e8 | 1997 | |
a76d924d | 1998 | buffer = new_request->data; |
cf7a04e8 | 1999 | |
a76d924d DJ |
2000 | section_data->cumulative = args->progress_data; |
2001 | section_data->section_name = sect_name; | |
2002 | section_data->section_size = size; | |
2003 | section_data->lma = new_request->begin; | |
2004 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2005 | |
2006 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2007 | } |
2008 | ||
2009 | /* Clean up an entire memory request vector, including load | |
2010 | data and progress records. */ | |
cf7a04e8 | 2011 | |
a76d924d DJ |
2012 | static void |
2013 | clear_memory_write_data (void *arg) | |
2014 | { | |
2015 | VEC(memory_write_request_s) **vec_p = arg; | |
2016 | VEC(memory_write_request_s) *vec = *vec_p; | |
2017 | int i; | |
2018 | struct memory_write_request *mr; | |
cf7a04e8 | 2019 | |
a76d924d DJ |
2020 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2021 | { | |
2022 | xfree (mr->data); | |
2023 | xfree (mr->baton); | |
2024 | } | |
2025 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2026 | } |
2027 | ||
c906108c | 2028 | void |
917317f4 | 2029 | generic_load (char *args, int from_tty) |
c906108c | 2030 | { |
c906108c | 2031 | bfd *loadfile_bfd; |
2b71414d | 2032 | struct timeval start_time, end_time; |
917317f4 | 2033 | char *filename; |
1986bccd | 2034 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2035 | struct load_section_data cbdata; |
a76d924d | 2036 | struct load_progress_data total_progress; |
79a45e25 | 2037 | struct ui_out *uiout = current_uiout; |
a76d924d | 2038 | |
e4f9b4d5 | 2039 | CORE_ADDR entry; |
1986bccd | 2040 | char **argv; |
e4f9b4d5 | 2041 | |
a76d924d DJ |
2042 | memset (&cbdata, 0, sizeof (cbdata)); |
2043 | memset (&total_progress, 0, sizeof (total_progress)); | |
2044 | cbdata.progress_data = &total_progress; | |
2045 | ||
2046 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2047 | |
d1a41061 PP |
2048 | if (args == NULL) |
2049 | error_no_arg (_("file to load")); | |
1986bccd | 2050 | |
d1a41061 | 2051 | argv = gdb_buildargv (args); |
1986bccd AS |
2052 | make_cleanup_freeargv (argv); |
2053 | ||
2054 | filename = tilde_expand (argv[0]); | |
2055 | make_cleanup (xfree, filename); | |
2056 | ||
2057 | if (argv[1] != NULL) | |
917317f4 | 2058 | { |
f698ca8e | 2059 | const char *endptr; |
ba5f2f8a | 2060 | |
f698ca8e | 2061 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2062 | |
2063 | /* If the last word was not a valid number then | |
2064 | treat it as a file name with spaces in. */ | |
2065 | if (argv[1] == endptr) | |
2066 | error (_("Invalid download offset:%s."), argv[1]); | |
2067 | ||
2068 | if (argv[2] != NULL) | |
2069 | error (_("Too many parameters.")); | |
917317f4 | 2070 | } |
c906108c | 2071 | |
c378eb4e | 2072 | /* Open the file for loading. */ |
1c00ec6b | 2073 | loadfile_bfd = gdb_bfd_open (filename, gnutarget, -1); |
c906108c SS |
2074 | if (loadfile_bfd == NULL) |
2075 | { | |
2076 | perror_with_name (filename); | |
2077 | return; | |
2078 | } | |
917317f4 | 2079 | |
f9a062ff | 2080 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2081 | |
c5aa993b | 2082 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2083 | { |
8a3fe4f8 | 2084 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2085 | bfd_errmsg (bfd_get_error ())); |
2086 | } | |
c5aa993b | 2087 | |
5417f6dc | 2088 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2089 | (void *) &total_progress.total_size); |
2090 | ||
2091 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2092 | |
2b71414d | 2093 | gettimeofday (&start_time, NULL); |
c906108c | 2094 | |
a76d924d DJ |
2095 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2096 | load_progress) != 0) | |
2097 | error (_("Load failed")); | |
c906108c | 2098 | |
2b71414d | 2099 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2100 | |
e4f9b4d5 | 2101 | entry = bfd_get_start_address (loadfile_bfd); |
8c2b9656 | 2102 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
e4f9b4d5 | 2103 | ui_out_text (uiout, "Start address "); |
f5656ead | 2104 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch (), entry)); |
e4f9b4d5 | 2105 | ui_out_text (uiout, ", load size "); |
a76d924d | 2106 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2107 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2108 | /* We were doing this in remote-mips.c, I suspect it is right |
2109 | for other targets too. */ | |
fb14de7b | 2110 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2111 | |
38963c97 DJ |
2112 | /* Reset breakpoints, now that we have changed the load image. For |
2113 | instance, breakpoints may have been set (or reset, by | |
2114 | post_create_inferior) while connected to the target but before we | |
2115 | loaded the program. In that case, the prologue analyzer could | |
2116 | have read instructions from the target to find the right | |
2117 | breakpoint locations. Loading has changed the contents of that | |
2118 | memory. */ | |
2119 | ||
2120 | breakpoint_re_set (); | |
2121 | ||
7ca9f392 AC |
2122 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2123 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2124 | was commented out), making the call confuses GDB if more than one | |
2125 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2126 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2127 | |
a76d924d DJ |
2128 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2129 | total_progress.write_count, | |
2130 | &start_time, &end_time); | |
c906108c SS |
2131 | |
2132 | do_cleanups (old_cleanups); | |
2133 | } | |
2134 | ||
c378eb4e | 2135 | /* Report how fast the transfer went. */ |
c906108c | 2136 | |
917317f4 | 2137 | void |
d9fcf2fb | 2138 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2139 | unsigned long data_count, |
2140 | unsigned long write_count, | |
2b71414d DJ |
2141 | const struct timeval *start_time, |
2142 | const struct timeval *end_time) | |
917317f4 | 2143 | { |
9f43d28c | 2144 | ULONGEST time_count; |
79a45e25 | 2145 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2146 | |
2147 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2148 | accuracy and overflow. */ | |
2149 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2150 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2151 | ||
8b93c638 JM |
2152 | ui_out_text (uiout, "Transfer rate: "); |
2153 | if (time_count > 0) | |
2154 | { | |
9f43d28c DJ |
2155 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2156 | ||
2157 | if (ui_out_is_mi_like_p (uiout)) | |
2158 | { | |
2159 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2160 | ui_out_text (uiout, " bits/sec"); | |
2161 | } | |
2162 | else if (rate < 1024) | |
2163 | { | |
2164 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2165 | ui_out_text (uiout, " bytes/sec"); | |
2166 | } | |
2167 | else | |
2168 | { | |
2169 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2170 | ui_out_text (uiout, " KB/sec"); | |
2171 | } | |
8b93c638 JM |
2172 | } |
2173 | else | |
2174 | { | |
ba5f2f8a | 2175 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2176 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2177 | } |
2178 | if (write_count > 0) | |
2179 | { | |
2180 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2181 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2182 | ui_out_text (uiout, " bytes/write"); |
2183 | } | |
2184 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2185 | } |
2186 | ||
2187 | /* This function allows the addition of incrementally linked object files. | |
2188 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2189 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2190 | special case syntax for the rombug target (Rombug is the boot | |
2191 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2192 | rombug case, the user doesn't need to supply a text address, | |
2193 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2194 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2195 | |
c906108c | 2196 | static void |
fba45db2 | 2197 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2198 | { |
5af949e3 | 2199 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2200 | char *filename = NULL; |
2df3850c | 2201 | int flags = OBJF_USERLOADED; |
c906108c | 2202 | char *arg; |
db162d44 | 2203 | int section_index = 0; |
2acceee2 JM |
2204 | int argcnt = 0; |
2205 | int sec_num = 0; | |
2206 | int i; | |
db162d44 EZ |
2207 | int expecting_sec_name = 0; |
2208 | int expecting_sec_addr = 0; | |
5b96932b | 2209 | char **argv; |
76ad5e1e | 2210 | struct objfile *objf; |
db162d44 | 2211 | |
a39a16c4 | 2212 | struct sect_opt |
2acceee2 | 2213 | { |
2acceee2 JM |
2214 | char *name; |
2215 | char *value; | |
a39a16c4 | 2216 | }; |
db162d44 | 2217 | |
a39a16c4 MM |
2218 | struct section_addr_info *section_addrs; |
2219 | struct sect_opt *sect_opts = NULL; | |
2220 | size_t num_sect_opts = 0; | |
3017564a | 2221 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2222 | |
a39a16c4 | 2223 | num_sect_opts = 16; |
5417f6dc | 2224 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2225 | * sizeof (struct sect_opt)); |
2226 | ||
c906108c SS |
2227 | dont_repeat (); |
2228 | ||
2229 | if (args == NULL) | |
8a3fe4f8 | 2230 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2231 | |
d1a41061 | 2232 | argv = gdb_buildargv (args); |
5b96932b | 2233 | make_cleanup_freeargv (argv); |
db162d44 | 2234 | |
5b96932b AS |
2235 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2236 | { | |
c378eb4e | 2237 | /* Process the argument. */ |
db162d44 | 2238 | if (argcnt == 0) |
c906108c | 2239 | { |
c378eb4e | 2240 | /* The first argument is the file name. */ |
db162d44 | 2241 | filename = tilde_expand (arg); |
3017564a | 2242 | make_cleanup (xfree, filename); |
c906108c | 2243 | } |
41dc8db8 MB |
2244 | else if (argcnt == 1) |
2245 | { | |
2246 | /* The second argument is always the text address at which | |
2247 | to load the program. */ | |
2248 | sect_opts[section_index].name = ".text"; | |
2249 | sect_opts[section_index].value = arg; | |
2250 | if (++section_index >= num_sect_opts) | |
2251 | { | |
2252 | num_sect_opts *= 2; | |
2253 | sect_opts = ((struct sect_opt *) | |
2254 | xrealloc (sect_opts, | |
2255 | num_sect_opts | |
2256 | * sizeof (struct sect_opt))); | |
2257 | } | |
2258 | } | |
db162d44 | 2259 | else |
41dc8db8 MB |
2260 | { |
2261 | /* It's an option (starting with '-') or it's an argument | |
2262 | to an option. */ | |
41dc8db8 MB |
2263 | if (expecting_sec_name) |
2264 | { | |
2265 | sect_opts[section_index].name = arg; | |
2266 | expecting_sec_name = 0; | |
2267 | } | |
2268 | else if (expecting_sec_addr) | |
2269 | { | |
2270 | sect_opts[section_index].value = arg; | |
2271 | expecting_sec_addr = 0; | |
2272 | if (++section_index >= num_sect_opts) | |
2273 | { | |
2274 | num_sect_opts *= 2; | |
2275 | sect_opts = ((struct sect_opt *) | |
2276 | xrealloc (sect_opts, | |
2277 | num_sect_opts | |
2278 | * sizeof (struct sect_opt))); | |
2279 | } | |
2280 | } | |
2281 | else if (strcmp (arg, "-readnow") == 0) | |
2282 | flags |= OBJF_READNOW; | |
2283 | else if (strcmp (arg, "-s") == 0) | |
2284 | { | |
2285 | expecting_sec_name = 1; | |
2286 | expecting_sec_addr = 1; | |
2287 | } | |
2288 | else | |
2289 | error (_("USAGE: add-symbol-file <filename> <textaddress>" | |
2290 | " [-readnow] [-s <secname> <addr>]*")); | |
2291 | } | |
c906108c | 2292 | } |
c906108c | 2293 | |
927890d0 JB |
2294 | /* This command takes at least two arguments. The first one is a |
2295 | filename, and the second is the address where this file has been | |
2296 | loaded. Abort now if this address hasn't been provided by the | |
2297 | user. */ | |
2298 | if (section_index < 1) | |
2299 | error (_("The address where %s has been loaded is missing"), filename); | |
2300 | ||
c378eb4e | 2301 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2302 | a sect_addr_info structure to be passed around to other |
2303 | functions. We have to split this up into separate print | |
bb599908 | 2304 | statements because hex_string returns a local static |
c378eb4e | 2305 | string. */ |
5417f6dc | 2306 | |
a3f17187 | 2307 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2308 | section_addrs = alloc_section_addr_info (section_index); |
2309 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2310 | for (i = 0; i < section_index; i++) |
c906108c | 2311 | { |
db162d44 EZ |
2312 | CORE_ADDR addr; |
2313 | char *val = sect_opts[i].value; | |
2314 | char *sec = sect_opts[i].name; | |
5417f6dc | 2315 | |
ae822768 | 2316 | addr = parse_and_eval_address (val); |
db162d44 | 2317 | |
db162d44 | 2318 | /* Here we store the section offsets in the order they were |
c378eb4e | 2319 | entered on the command line. */ |
a39a16c4 MM |
2320 | section_addrs->other[sec_num].name = sec; |
2321 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2322 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2323 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2324 | sec_num++; |
2325 | ||
5417f6dc | 2326 | /* The object's sections are initialized when a |
db162d44 | 2327 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2328 | This happens in reread_symbols. |
db162d44 EZ |
2329 | At this point, we don't know what file type this is, |
2330 | so we can't determine what section names are valid. */ | |
2acceee2 | 2331 | } |
d76488d8 | 2332 | section_addrs->num_sections = sec_num; |
db162d44 | 2333 | |
2acceee2 | 2334 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2335 | error (_("Not confirmed.")); |
c906108c | 2336 | |
76ad5e1e NB |
2337 | objf = symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2338 | section_addrs, flags); | |
2339 | ||
2340 | add_target_sections_of_objfile (objf); | |
c906108c SS |
2341 | |
2342 | /* Getting new symbols may change our opinion about what is | |
2343 | frameless. */ | |
2344 | reinit_frame_cache (); | |
db162d44 | 2345 | do_cleanups (my_cleanups); |
c906108c SS |
2346 | } |
2347 | \f | |
70992597 | 2348 | |
63644780 NB |
2349 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2350 | ||
2351 | static void | |
2352 | remove_symbol_file_command (char *args, int from_tty) | |
2353 | { | |
2354 | char **argv; | |
2355 | struct objfile *objf = NULL; | |
2356 | struct cleanup *my_cleanups; | |
2357 | struct program_space *pspace = current_program_space; | |
2358 | struct gdbarch *gdbarch = get_current_arch (); | |
2359 | ||
2360 | dont_repeat (); | |
2361 | ||
2362 | if (args == NULL) | |
2363 | error (_("remove-symbol-file: no symbol file provided")); | |
2364 | ||
2365 | my_cleanups = make_cleanup (null_cleanup, NULL); | |
2366 | ||
2367 | argv = gdb_buildargv (args); | |
2368 | ||
2369 | if (strcmp (argv[0], "-a") == 0) | |
2370 | { | |
2371 | /* Interpret the next argument as an address. */ | |
2372 | CORE_ADDR addr; | |
2373 | ||
2374 | if (argv[1] == NULL) | |
2375 | error (_("Missing address argument")); | |
2376 | ||
2377 | if (argv[2] != NULL) | |
2378 | error (_("Junk after %s"), argv[1]); | |
2379 | ||
2380 | addr = parse_and_eval_address (argv[1]); | |
2381 | ||
2382 | ALL_OBJFILES (objf) | |
2383 | { | |
2384 | if (objf != 0 | |
2385 | && objf->flags & OBJF_USERLOADED | |
2386 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) | |
2387 | break; | |
2388 | } | |
2389 | } | |
2390 | else if (argv[0] != NULL) | |
2391 | { | |
2392 | /* Interpret the current argument as a file name. */ | |
2393 | char *filename; | |
2394 | ||
2395 | if (argv[1] != NULL) | |
2396 | error (_("Junk after %s"), argv[0]); | |
2397 | ||
2398 | filename = tilde_expand (argv[0]); | |
2399 | make_cleanup (xfree, filename); | |
2400 | ||
2401 | ALL_OBJFILES (objf) | |
2402 | { | |
2403 | if (objf != 0 | |
2404 | && objf->flags & OBJF_USERLOADED | |
2405 | && objf->pspace == pspace | |
2406 | && filename_cmp (filename, objfile_name (objf)) == 0) | |
2407 | break; | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | if (objf == NULL) | |
2412 | error (_("No symbol file found")); | |
2413 | ||
2414 | if (from_tty | |
2415 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2416 | objfile_name (objf))) | |
2417 | error (_("Not confirmed.")); | |
2418 | ||
2419 | free_objfile (objf); | |
2420 | clear_symtab_users (0); | |
2421 | ||
2422 | do_cleanups (my_cleanups); | |
2423 | } | |
2424 | ||
4ac39b97 JK |
2425 | typedef struct objfile *objfilep; |
2426 | ||
2427 | DEF_VEC_P (objfilep); | |
2428 | ||
c906108c | 2429 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2430 | |
c906108c | 2431 | void |
fba45db2 | 2432 | reread_symbols (void) |
c906108c SS |
2433 | { |
2434 | struct objfile *objfile; | |
2435 | long new_modtime; | |
c906108c SS |
2436 | struct stat new_statbuf; |
2437 | int res; | |
4ac39b97 JK |
2438 | VEC (objfilep) *new_objfiles = NULL; |
2439 | struct cleanup *all_cleanups; | |
2440 | ||
2441 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2442 | |
2443 | /* With the addition of shared libraries, this should be modified, | |
2444 | the load time should be saved in the partial symbol tables, since | |
2445 | different tables may come from different source files. FIXME. | |
2446 | This routine should then walk down each partial symbol table | |
c378eb4e | 2447 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2448 | |
c5aa993b JM |
2449 | for (objfile = object_files; objfile; objfile = objfile->next) |
2450 | { | |
9cce227f TG |
2451 | if (objfile->obfd == NULL) |
2452 | continue; | |
2453 | ||
2454 | /* Separate debug objfiles are handled in the main objfile. */ | |
2455 | if (objfile->separate_debug_objfile_backlink) | |
2456 | continue; | |
2457 | ||
02aeec7b JB |
2458 | /* If this object is from an archive (what you usually create with |
2459 | `ar', often called a `static library' on most systems, though | |
2460 | a `shared library' on AIX is also an archive), then you should | |
2461 | stat on the archive name, not member name. */ | |
9cce227f TG |
2462 | if (objfile->obfd->my_archive) |
2463 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2464 | else | |
4262abfb | 2465 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2466 | if (res != 0) |
2467 | { | |
c378eb4e | 2468 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f | 2469 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
4262abfb | 2470 | objfile_name (objfile)); |
9cce227f TG |
2471 | continue; |
2472 | } | |
2473 | new_modtime = new_statbuf.st_mtime; | |
2474 | if (new_modtime != objfile->mtime) | |
2475 | { | |
2476 | struct cleanup *old_cleanups; | |
2477 | struct section_offsets *offsets; | |
2478 | int num_offsets; | |
24ba069a | 2479 | char *original_name; |
9cce227f TG |
2480 | |
2481 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
4262abfb | 2482 | objfile_name (objfile)); |
9cce227f TG |
2483 | |
2484 | /* There are various functions like symbol_file_add, | |
2485 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2486 | appear to do what we want. But they have various other | |
2487 | effects which we *don't* want. So we just do stuff | |
2488 | ourselves. We don't worry about mapped files (for one thing, | |
2489 | any mapped file will be out of date). */ | |
2490 | ||
2491 | /* If we get an error, blow away this objfile (not sure if | |
2492 | that is the correct response for things like shared | |
2493 | libraries). */ | |
2494 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2495 | /* We need to do this whenever any symbols go away. */ | |
2496 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2497 | ||
0ba1096a KT |
2498 | if (exec_bfd != NULL |
2499 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2500 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2501 | { |
2502 | /* Reload EXEC_BFD without asking anything. */ | |
2503 | ||
2504 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2505 | } | |
2506 | ||
f6eeced0 JK |
2507 | /* Keep the calls order approx. the same as in free_objfile. */ |
2508 | ||
2509 | /* Free the separate debug objfiles. It will be | |
2510 | automatically recreated by sym_read. */ | |
2511 | free_objfile_separate_debug (objfile); | |
2512 | ||
2513 | /* Remove any references to this objfile in the global | |
2514 | value lists. */ | |
2515 | preserve_values (objfile); | |
2516 | ||
2517 | /* Nuke all the state that we will re-read. Much of the following | |
2518 | code which sets things to NULL really is necessary to tell | |
2519 | other parts of GDB that there is nothing currently there. | |
2520 | ||
2521 | Try to keep the freeing order compatible with free_objfile. */ | |
2522 | ||
2523 | if (objfile->sf != NULL) | |
2524 | { | |
2525 | (*objfile->sf->sym_finish) (objfile); | |
2526 | } | |
2527 | ||
2528 | clear_objfile_data (objfile); | |
2529 | ||
e1507e95 | 2530 | /* Clean up any state BFD has sitting around. */ |
a4453b7e TT |
2531 | { |
2532 | struct bfd *obfd = objfile->obfd; | |
d3846e71 | 2533 | char *obfd_filename; |
a4453b7e TT |
2534 | |
2535 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2536 | /* Open the new BFD before freeing the old one, so that | |
2537 | the filename remains live. */ | |
08d2cd74 | 2538 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
e1507e95 TT |
2539 | if (objfile->obfd == NULL) |
2540 | { | |
2541 | /* We have to make a cleanup and error here, rather | |
2542 | than erroring later, because once we unref OBFD, | |
2543 | OBFD_FILENAME will be freed. */ | |
2544 | make_cleanup_bfd_unref (obfd); | |
2545 | error (_("Can't open %s to read symbols."), obfd_filename); | |
2546 | } | |
a4453b7e TT |
2547 | gdb_bfd_unref (obfd); |
2548 | } | |
2549 | ||
24ba069a JK |
2550 | original_name = xstrdup (objfile->original_name); |
2551 | make_cleanup (xfree, original_name); | |
2552 | ||
9cce227f TG |
2553 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2554 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2555 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2556 | bfd_errmsg (bfd_get_error ())); |
2557 | ||
2558 | /* Save the offsets, we will nuke them with the rest of the | |
2559 | objfile_obstack. */ | |
2560 | num_offsets = objfile->num_sections; | |
2561 | offsets = ((struct section_offsets *) | |
2562 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2563 | memcpy (offsets, objfile->section_offsets, | |
2564 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2565 | ||
9cce227f TG |
2566 | /* FIXME: Do we have to free a whole linked list, or is this |
2567 | enough? */ | |
2568 | if (objfile->global_psymbols.list) | |
2569 | xfree (objfile->global_psymbols.list); | |
2570 | memset (&objfile->global_psymbols, 0, | |
2571 | sizeof (objfile->global_psymbols)); | |
2572 | if (objfile->static_psymbols.list) | |
2573 | xfree (objfile->static_psymbols.list); | |
2574 | memset (&objfile->static_psymbols, 0, | |
2575 | sizeof (objfile->static_psymbols)); | |
2576 | ||
c378eb4e | 2577 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2578 | psymbol_bcache_free (objfile->psymbol_cache); |
2579 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f TG |
2580 | obstack_free (&objfile->objfile_obstack, 0); |
2581 | objfile->sections = NULL; | |
2582 | objfile->symtabs = NULL; | |
2583 | objfile->psymtabs = NULL; | |
2584 | objfile->psymtabs_addrmap = NULL; | |
2585 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2586 | objfile->template_symbols = NULL; |
9cce227f | 2587 | objfile->msymbols = NULL; |
9cce227f TG |
2588 | objfile->minimal_symbol_count = 0; |
2589 | memset (&objfile->msymbol_hash, 0, | |
2590 | sizeof (objfile->msymbol_hash)); | |
2591 | memset (&objfile->msymbol_demangled_hash, 0, | |
2592 | sizeof (objfile->msymbol_demangled_hash)); | |
2593 | ||
9cce227f TG |
2594 | /* obstack_init also initializes the obstack so it is |
2595 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2596 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2597 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2598 | |
846060df JB |
2599 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2600 | data on the objfile's obstack (if sharing data across | |
2601 | multiple users is not possible), so it's important to | |
2602 | do it *after* the obstack has been initialized. */ | |
2603 | set_objfile_per_bfd (objfile); | |
2604 | ||
24ba069a JK |
2605 | objfile->original_name = obstack_copy0 (&objfile->objfile_obstack, |
2606 | original_name, | |
2607 | strlen (original_name)); | |
2608 | ||
779bd270 DE |
2609 | /* Reset the sym_fns pointer. The ELF reader can change it |
2610 | based on whether .gdb_index is present, and we need it to | |
2611 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2612 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2613 | |
d82ea6a8 | 2614 | build_objfile_section_table (objfile); |
9cce227f TG |
2615 | terminate_minimal_symbol_table (objfile); |
2616 | ||
2617 | /* We use the same section offsets as from last time. I'm not | |
2618 | sure whether that is always correct for shared libraries. */ | |
2619 | objfile->section_offsets = (struct section_offsets *) | |
2620 | obstack_alloc (&objfile->objfile_obstack, | |
2621 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2622 | memcpy (objfile->section_offsets, offsets, | |
2623 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2624 | objfile->num_sections = num_offsets; | |
2625 | ||
2626 | /* What the hell is sym_new_init for, anyway? The concept of | |
2627 | distinguishing between the main file and additional files | |
2628 | in this way seems rather dubious. */ | |
2629 | if (objfile == symfile_objfile) | |
c906108c | 2630 | { |
9cce227f | 2631 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2632 | } |
9cce227f TG |
2633 | |
2634 | (*objfile->sf->sym_init) (objfile); | |
2635 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2636 | |
2637 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2638 | read_symbols (objfile, 0); | |
b11896a5 | 2639 | |
9cce227f | 2640 | if (!objfile_has_symbols (objfile)) |
c906108c | 2641 | { |
9cce227f TG |
2642 | wrap_here (""); |
2643 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2644 | wrap_here (""); | |
c5aa993b | 2645 | } |
9cce227f TG |
2646 | |
2647 | /* We're done reading the symbol file; finish off complaints. */ | |
2648 | clear_complaints (&symfile_complaints, 0, 1); | |
2649 | ||
2650 | /* Getting new symbols may change our opinion about what is | |
2651 | frameless. */ | |
2652 | ||
2653 | reinit_frame_cache (); | |
2654 | ||
2655 | /* Discard cleanups as symbol reading was successful. */ | |
2656 | discard_cleanups (old_cleanups); | |
2657 | ||
2658 | /* If the mtime has changed between the time we set new_modtime | |
2659 | and now, we *want* this to be out of date, so don't call stat | |
2660 | again now. */ | |
2661 | objfile->mtime = new_modtime; | |
9cce227f | 2662 | init_entry_point_info (objfile); |
4ac39b97 JK |
2663 | |
2664 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2665 | } |
2666 | } | |
c906108c | 2667 | |
4ac39b97 | 2668 | if (new_objfiles) |
ea53e89f | 2669 | { |
4ac39b97 JK |
2670 | int ix; |
2671 | ||
ff3536bc UW |
2672 | /* Notify objfiles that we've modified objfile sections. */ |
2673 | objfiles_changed (); | |
2674 | ||
c1e56572 | 2675 | clear_symtab_users (0); |
4ac39b97 JK |
2676 | |
2677 | /* clear_objfile_data for each objfile was called before freeing it and | |
2678 | observer_notify_new_objfile (NULL) has been called by | |
2679 | clear_symtab_users above. Notify the new files now. */ | |
2680 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2681 | observer_notify_new_objfile (objfile); | |
2682 | ||
ea53e89f JB |
2683 | /* At least one objfile has changed, so we can consider that |
2684 | the executable we're debugging has changed too. */ | |
781b42b0 | 2685 | observer_notify_executable_changed (); |
ea53e89f | 2686 | } |
4ac39b97 JK |
2687 | |
2688 | do_cleanups (all_cleanups); | |
c906108c | 2689 | } |
c906108c SS |
2690 | \f |
2691 | ||
c5aa993b JM |
2692 | typedef struct |
2693 | { | |
2694 | char *ext; | |
c906108c | 2695 | enum language lang; |
c5aa993b JM |
2696 | } |
2697 | filename_language; | |
c906108c | 2698 | |
c5aa993b | 2699 | static filename_language *filename_language_table; |
c906108c SS |
2700 | static int fl_table_size, fl_table_next; |
2701 | ||
2702 | static void | |
fba45db2 | 2703 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2704 | { |
2705 | if (fl_table_next >= fl_table_size) | |
2706 | { | |
2707 | fl_table_size += 10; | |
5417f6dc | 2708 | filename_language_table = |
25bf3106 PM |
2709 | xrealloc (filename_language_table, |
2710 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2711 | } |
2712 | ||
4fcf66da | 2713 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2714 | filename_language_table[fl_table_next].lang = lang; |
2715 | fl_table_next++; | |
2716 | } | |
2717 | ||
2718 | static char *ext_args; | |
920d2a44 AC |
2719 | static void |
2720 | show_ext_args (struct ui_file *file, int from_tty, | |
2721 | struct cmd_list_element *c, const char *value) | |
2722 | { | |
3e43a32a MS |
2723 | fprintf_filtered (file, |
2724 | _("Mapping between filename extension " | |
2725 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2726 | value); |
2727 | } | |
c906108c SS |
2728 | |
2729 | static void | |
26c41df3 | 2730 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2731 | { |
2732 | int i; | |
2733 | char *cp = ext_args; | |
2734 | enum language lang; | |
2735 | ||
c378eb4e | 2736 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2737 | if (*cp != '.') |
8a3fe4f8 | 2738 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2739 | |
2740 | /* Find end of first arg. */ | |
c5aa993b | 2741 | while (*cp && !isspace (*cp)) |
c906108c SS |
2742 | cp++; |
2743 | ||
2744 | if (*cp == '\0') | |
3e43a32a MS |
2745 | error (_("'%s': two arguments required -- " |
2746 | "filename extension and language"), | |
c906108c SS |
2747 | ext_args); |
2748 | ||
c378eb4e | 2749 | /* Null-terminate first arg. */ |
c5aa993b | 2750 | *cp++ = '\0'; |
c906108c SS |
2751 | |
2752 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2753 | cp = skip_spaces (cp); |
c906108c SS |
2754 | |
2755 | if (*cp == '\0') | |
3e43a32a MS |
2756 | error (_("'%s': two arguments required -- " |
2757 | "filename extension and language"), | |
c906108c SS |
2758 | ext_args); |
2759 | ||
2760 | /* Lookup the language from among those we know. */ | |
2761 | lang = language_enum (cp); | |
2762 | ||
2763 | /* Now lookup the filename extension: do we already know it? */ | |
2764 | for (i = 0; i < fl_table_next; i++) | |
2765 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2766 | break; | |
2767 | ||
2768 | if (i >= fl_table_next) | |
2769 | { | |
c378eb4e | 2770 | /* New file extension. */ |
c906108c SS |
2771 | add_filename_language (ext_args, lang); |
2772 | } | |
2773 | else | |
2774 | { | |
c378eb4e | 2775 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2776 | |
2777 | /* if (from_tty) */ | |
2778 | /* query ("Really make files of type %s '%s'?", */ | |
2779 | /* ext_args, language_str (lang)); */ | |
2780 | ||
b8c9b27d | 2781 | xfree (filename_language_table[i].ext); |
4fcf66da | 2782 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2783 | filename_language_table[i].lang = lang; |
2784 | } | |
2785 | } | |
2786 | ||
2787 | static void | |
fba45db2 | 2788 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2789 | { |
2790 | int i; | |
2791 | ||
a3f17187 | 2792 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2793 | printf_filtered ("\n\n"); |
2794 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2795 | printf_filtered ("\t%s\t- %s\n", |
2796 | filename_language_table[i].ext, | |
c906108c SS |
2797 | language_str (filename_language_table[i].lang)); |
2798 | } | |
2799 | ||
2800 | static void | |
fba45db2 | 2801 | init_filename_language_table (void) |
c906108c | 2802 | { |
c378eb4e | 2803 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2804 | { |
2805 | fl_table_size = 20; | |
2806 | fl_table_next = 0; | |
c5aa993b | 2807 | filename_language_table = |
c906108c | 2808 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2809 | add_filename_language (".c", language_c); |
6aecb9c2 | 2810 | add_filename_language (".d", language_d); |
c5aa993b JM |
2811 | add_filename_language (".C", language_cplus); |
2812 | add_filename_language (".cc", language_cplus); | |
2813 | add_filename_language (".cp", language_cplus); | |
2814 | add_filename_language (".cpp", language_cplus); | |
2815 | add_filename_language (".cxx", language_cplus); | |
2816 | add_filename_language (".c++", language_cplus); | |
2817 | add_filename_language (".java", language_java); | |
c906108c | 2818 | add_filename_language (".class", language_java); |
da2cf7e0 | 2819 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2820 | add_filename_language (".f", language_fortran); |
2821 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2822 | add_filename_language (".for", language_fortran); |
2823 | add_filename_language (".FOR", language_fortran); | |
2824 | add_filename_language (".ftn", language_fortran); | |
2825 | add_filename_language (".FTN", language_fortran); | |
2826 | add_filename_language (".fpp", language_fortran); | |
2827 | add_filename_language (".FPP", language_fortran); | |
2828 | add_filename_language (".f90", language_fortran); | |
2829 | add_filename_language (".F90", language_fortran); | |
2830 | add_filename_language (".f95", language_fortran); | |
2831 | add_filename_language (".F95", language_fortran); | |
2832 | add_filename_language (".f03", language_fortran); | |
2833 | add_filename_language (".F03", language_fortran); | |
2834 | add_filename_language (".f08", language_fortran); | |
2835 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2836 | add_filename_language (".s", language_asm); |
aa707ed0 | 2837 | add_filename_language (".sx", language_asm); |
c5aa993b | 2838 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2839 | add_filename_language (".pas", language_pascal); |
2840 | add_filename_language (".p", language_pascal); | |
2841 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2842 | add_filename_language (".adb", language_ada); |
2843 | add_filename_language (".ads", language_ada); | |
2844 | add_filename_language (".a", language_ada); | |
2845 | add_filename_language (".ada", language_ada); | |
dde59185 | 2846 | add_filename_language (".dg", language_ada); |
c906108c SS |
2847 | } |
2848 | } | |
2849 | ||
2850 | enum language | |
dd786858 | 2851 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2852 | { |
2853 | int i; | |
2854 | char *cp; | |
2855 | ||
2856 | if (filename != NULL) | |
2857 | if ((cp = strrchr (filename, '.')) != NULL) | |
2858 | for (i = 0; i < fl_table_next; i++) | |
2859 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2860 | return filename_language_table[i].lang; | |
2861 | ||
2862 | return language_unknown; | |
2863 | } | |
2864 | \f | |
2865 | /* allocate_symtab: | |
2866 | ||
2867 | Allocate and partly initialize a new symbol table. Return a pointer | |
2868 | to it. error() if no space. | |
2869 | ||
2870 | Caller must set these fields: | |
c5aa993b JM |
2871 | LINETABLE(symtab) |
2872 | symtab->blockvector | |
2873 | symtab->dirname | |
2874 | symtab->free_code | |
2875 | symtab->free_ptr | |
c906108c SS |
2876 | */ |
2877 | ||
2878 | struct symtab * | |
72b9f47f | 2879 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2880 | { |
52f0bd74 | 2881 | struct symtab *symtab; |
c906108c SS |
2882 | |
2883 | symtab = (struct symtab *) | |
4a146b47 | 2884 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2885 | memset (symtab, 0, sizeof (*symtab)); |
21ea9eec TT |
2886 | symtab->filename = bcache (filename, strlen (filename) + 1, |
2887 | objfile->per_bfd->filename_cache); | |
c5aa993b JM |
2888 | symtab->fullname = NULL; |
2889 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2890 | symtab->debugformat = "unknown"; |
c906108c | 2891 | |
c378eb4e | 2892 | /* Hook it to the objfile it comes from. */ |
c906108c | 2893 | |
c5aa993b JM |
2894 | symtab->objfile = objfile; |
2895 | symtab->next = objfile->symtabs; | |
2896 | objfile->symtabs = symtab; | |
c906108c | 2897 | |
db0fec5c DE |
2898 | /* This can be very verbose with lots of headers. |
2899 | Only print at higher debug levels. */ | |
2900 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2901 | { |
2902 | /* Be a bit clever with debugging messages, and don't print objfile | |
2903 | every time, only when it changes. */ | |
2904 | static char *last_objfile_name = NULL; | |
2905 | ||
2906 | if (last_objfile_name == NULL | |
4262abfb | 2907 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2908 | { |
2909 | xfree (last_objfile_name); | |
4262abfb | 2910 | last_objfile_name = xstrdup (objfile_name (objfile)); |
45cfd468 DE |
2911 | fprintf_unfiltered (gdb_stdlog, |
2912 | "Creating one or more symtabs for objfile %s ...\n", | |
2913 | last_objfile_name); | |
2914 | } | |
2915 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2916 | "Created symtab %s for module %s.\n", |
2917 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2918 | } |
2919 | ||
c906108c SS |
2920 | return (symtab); |
2921 | } | |
c906108c | 2922 | \f |
c5aa993b | 2923 | |
c906108c | 2924 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2925 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2926 | |
2927 | void | |
c1e56572 | 2928 | clear_symtab_users (int add_flags) |
c906108c SS |
2929 | { |
2930 | /* Someday, we should do better than this, by only blowing away | |
2931 | the things that really need to be blown. */ | |
c0501be5 DJ |
2932 | |
2933 | /* Clear the "current" symtab first, because it is no longer valid. | |
2934 | breakpoint_re_set may try to access the current symtab. */ | |
2935 | clear_current_source_symtab_and_line (); | |
2936 | ||
c906108c | 2937 | clear_displays (); |
c1e56572 JK |
2938 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2939 | breakpoint_re_set (); | |
1bfeeb0f | 2940 | clear_last_displayed_sal (); |
c906108c | 2941 | clear_pc_function_cache (); |
06d3b283 | 2942 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2943 | |
2944 | /* Clear globals which might have pointed into a removed objfile. | |
2945 | FIXME: It's not clear which of these are supposed to persist | |
2946 | between expressions and which ought to be reset each time. */ | |
2947 | expression_context_block = NULL; | |
2948 | innermost_block = NULL; | |
8756216b DP |
2949 | |
2950 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2951 | varobj_invalidate (); | |
2952 | ||
c906108c SS |
2953 | } |
2954 | ||
74b7792f AC |
2955 | static void |
2956 | clear_symtab_users_cleanup (void *ignore) | |
2957 | { | |
c1e56572 | 2958 | clear_symtab_users (0); |
74b7792f | 2959 | } |
c906108c | 2960 | \f |
c906108c SS |
2961 | /* OVERLAYS: |
2962 | The following code implements an abstraction for debugging overlay sections. | |
2963 | ||
2964 | The target model is as follows: | |
2965 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2966 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2967 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2968 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2969 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2970 | sections should be considered to be mapped from the VMA to the LMA. |
2971 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2972 | For instance, if a section has been mapped then its contents |
c5aa993b | 2973 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2974 | |
2975 | Two levels of debugger support for overlays are available. One is | |
2976 | "manual", in which the debugger relies on the user to tell it which | |
2977 | overlays are currently mapped. This level of support is | |
2978 | implemented entirely in the core debugger, and the information about | |
2979 | whether a section is mapped is kept in the objfile->obj_section table. | |
2980 | ||
2981 | The second level of support is "automatic", and is only available if | |
2982 | the target-specific code provides functionality to read the target's | |
2983 | overlay mapping table, and translate its contents for the debugger | |
2984 | (by updating the mapped state information in the obj_section tables). | |
2985 | ||
2986 | The interface is as follows: | |
c5aa993b JM |
2987 | User commands: |
2988 | overlay map <name> -- tell gdb to consider this section mapped | |
2989 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2990 | overlay list -- list the sections that GDB thinks are mapped | |
2991 | overlay read-target -- get the target's state of what's mapped | |
2992 | overlay off/manual/auto -- set overlay debugging state | |
2993 | Functional interface: | |
2994 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2995 | section, return that section. | |
5417f6dc | 2996 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2997 | the pc, either in its VMA or its LMA |
714835d5 | 2998 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2999 | section_is_overlay(sect): true if section's VMA != LMA |
3000 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3001 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3002 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3003 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3004 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3005 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3006 | either in VMA or LMA depending on whether | |
c378eb4e | 3007 | the symbol's section is currently mapped. */ |
c906108c SS |
3008 | |
3009 | /* Overlay debugging state: */ | |
3010 | ||
d874f1e2 | 3011 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 3012 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 3013 | |
c906108c | 3014 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3015 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3016 | SECTION is loaded at an address different from where it will "run". */ |
3017 | ||
3018 | int | |
714835d5 | 3019 | section_is_overlay (struct obj_section *section) |
c906108c | 3020 | { |
714835d5 UW |
3021 | if (overlay_debugging && section) |
3022 | { | |
3023 | bfd *abfd = section->objfile->obfd; | |
3024 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 3025 | |
714835d5 UW |
3026 | if (bfd_section_lma (abfd, bfd_section) != 0 |
3027 | && bfd_section_lma (abfd, bfd_section) | |
3028 | != bfd_section_vma (abfd, bfd_section)) | |
3029 | return 1; | |
3030 | } | |
c906108c SS |
3031 | |
3032 | return 0; | |
3033 | } | |
3034 | ||
3035 | /* Function: overlay_invalidate_all (void) | |
3036 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3037 | ||
3038 | static void | |
fba45db2 | 3039 | overlay_invalidate_all (void) |
c906108c | 3040 | { |
c5aa993b | 3041 | struct objfile *objfile; |
c906108c SS |
3042 | struct obj_section *sect; |
3043 | ||
3044 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3045 | if (section_is_overlay (sect)) |
3046 | sect->ovly_mapped = -1; | |
c906108c SS |
3047 | } |
3048 | ||
714835d5 | 3049 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3050 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3051 | |
3052 | Access to the ovly_mapped flag is restricted to this function, so | |
3053 | that we can do automatic update. If the global flag | |
3054 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3055 | overlay_invalidate_all. If the mapped state of the particular | |
3056 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3057 | ||
714835d5 UW |
3058 | int |
3059 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3060 | { |
9216df95 UW |
3061 | struct gdbarch *gdbarch; |
3062 | ||
714835d5 | 3063 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3064 | return 0; |
3065 | ||
c5aa993b | 3066 | switch (overlay_debugging) |
c906108c SS |
3067 | { |
3068 | default: | |
d874f1e2 | 3069 | case ovly_off: |
c5aa993b | 3070 | return 0; /* overlay debugging off */ |
d874f1e2 | 3071 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3072 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3073 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3074 | gdbarch = get_objfile_arch (osect->objfile); |
3075 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3076 | { |
3077 | if (overlay_cache_invalid) | |
3078 | { | |
3079 | overlay_invalidate_all (); | |
3080 | overlay_cache_invalid = 0; | |
3081 | } | |
3082 | if (osect->ovly_mapped == -1) | |
9216df95 | 3083 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3084 | } |
3085 | /* fall thru to manual case */ | |
d874f1e2 | 3086 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3087 | return osect->ovly_mapped == 1; |
3088 | } | |
3089 | } | |
3090 | ||
c906108c SS |
3091 | /* Function: pc_in_unmapped_range |
3092 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3093 | ||
3094 | CORE_ADDR | |
714835d5 | 3095 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3096 | { |
714835d5 UW |
3097 | if (section_is_overlay (section)) |
3098 | { | |
3099 | bfd *abfd = section->objfile->obfd; | |
3100 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3101 | |
714835d5 UW |
3102 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3103 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3104 | CORE_ADDR offset = obj_section_offset (section); | |
3105 | ||
3106 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3107 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3108 | return 1; | |
3109 | } | |
c906108c | 3110 | |
c906108c SS |
3111 | return 0; |
3112 | } | |
3113 | ||
3114 | /* Function: pc_in_mapped_range | |
3115 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3116 | ||
3117 | CORE_ADDR | |
714835d5 | 3118 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3119 | { |
714835d5 UW |
3120 | if (section_is_overlay (section)) |
3121 | { | |
3122 | if (obj_section_addr (section) <= pc | |
3123 | && pc < obj_section_endaddr (section)) | |
3124 | return 1; | |
3125 | } | |
c906108c | 3126 | |
c906108c SS |
3127 | return 0; |
3128 | } | |
3129 | ||
9ec8e6a0 JB |
3130 | /* Return true if the mapped ranges of sections A and B overlap, false |
3131 | otherwise. */ | |
3b7bacac | 3132 | |
b9362cc7 | 3133 | static int |
714835d5 | 3134 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3135 | { |
714835d5 UW |
3136 | CORE_ADDR a_start = obj_section_addr (a); |
3137 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3138 | CORE_ADDR b_start = obj_section_addr (b); | |
3139 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3140 | |
3141 | return (a_start < b_end && b_start < a_end); | |
3142 | } | |
3143 | ||
c906108c SS |
3144 | /* Function: overlay_unmapped_address (PC, SECTION) |
3145 | Returns the address corresponding to PC in the unmapped (load) range. | |
3146 | May be the same as PC. */ | |
3147 | ||
3148 | CORE_ADDR | |
714835d5 | 3149 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3150 | { |
714835d5 UW |
3151 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3152 | { | |
3153 | bfd *abfd = section->objfile->obfd; | |
3154 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3155 | |
714835d5 UW |
3156 | return pc + bfd_section_lma (abfd, bfd_section) |
3157 | - bfd_section_vma (abfd, bfd_section); | |
3158 | } | |
c906108c SS |
3159 | |
3160 | return pc; | |
3161 | } | |
3162 | ||
3163 | /* Function: overlay_mapped_address (PC, SECTION) | |
3164 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3165 | May be the same as PC. */ | |
3166 | ||
3167 | CORE_ADDR | |
714835d5 | 3168 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3169 | { |
714835d5 UW |
3170 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3171 | { | |
3172 | bfd *abfd = section->objfile->obfd; | |
3173 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3174 | |
714835d5 UW |
3175 | return pc + bfd_section_vma (abfd, bfd_section) |
3176 | - bfd_section_lma (abfd, bfd_section); | |
3177 | } | |
c906108c SS |
3178 | |
3179 | return pc; | |
3180 | } | |
3181 | ||
5417f6dc | 3182 | /* Function: symbol_overlayed_address |
c906108c SS |
3183 | Return one of two addresses (relative to the VMA or to the LMA), |
3184 | depending on whether the section is mapped or not. */ | |
3185 | ||
c5aa993b | 3186 | CORE_ADDR |
714835d5 | 3187 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3188 | { |
3189 | if (overlay_debugging) | |
3190 | { | |
c378eb4e | 3191 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3192 | if (section == 0) |
3193 | return address; | |
c378eb4e MS |
3194 | /* If the symbol's section is not an overlay, just return its |
3195 | address. */ | |
c906108c SS |
3196 | if (!section_is_overlay (section)) |
3197 | return address; | |
c378eb4e | 3198 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3199 | if (section_is_mapped (section)) |
3200 | return address; | |
3201 | /* | |
3202 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3203 | * then return its LOADED address rather than its vma address!! | |
3204 | */ | |
3205 | return overlay_unmapped_address (address, section); | |
3206 | } | |
3207 | return address; | |
3208 | } | |
3209 | ||
5417f6dc | 3210 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3211 | Return the best-match overlay section for PC: |
3212 | If PC matches a mapped overlay section's VMA, return that section. | |
3213 | Else if PC matches an unmapped section's VMA, return that section. | |
3214 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3215 | ||
714835d5 | 3216 | struct obj_section * |
fba45db2 | 3217 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3218 | { |
c5aa993b | 3219 | struct objfile *objfile; |
c906108c SS |
3220 | struct obj_section *osect, *best_match = NULL; |
3221 | ||
3222 | if (overlay_debugging) | |
3223 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3224 | if (section_is_overlay (osect)) |
c5aa993b | 3225 | { |
714835d5 | 3226 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3227 | { |
714835d5 UW |
3228 | if (section_is_mapped (osect)) |
3229 | return osect; | |
c5aa993b JM |
3230 | else |
3231 | best_match = osect; | |
3232 | } | |
714835d5 | 3233 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3234 | best_match = osect; |
3235 | } | |
714835d5 | 3236 | return best_match; |
c906108c SS |
3237 | } |
3238 | ||
3239 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3240 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3241 | currently marked as MAPPED, return that section. Else return NULL. */ |
3242 | ||
714835d5 | 3243 | struct obj_section * |
fba45db2 | 3244 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3245 | { |
c5aa993b | 3246 | struct objfile *objfile; |
c906108c SS |
3247 | struct obj_section *osect; |
3248 | ||
3249 | if (overlay_debugging) | |
3250 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3251 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3252 | return osect; | |
c906108c SS |
3253 | |
3254 | return NULL; | |
3255 | } | |
3256 | ||
3257 | /* Function: list_overlays_command | |
c378eb4e | 3258 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3259 | |
5d3055ad | 3260 | static void |
fba45db2 | 3261 | list_overlays_command (char *args, int from_tty) |
c906108c | 3262 | { |
c5aa993b JM |
3263 | int nmapped = 0; |
3264 | struct objfile *objfile; | |
c906108c SS |
3265 | struct obj_section *osect; |
3266 | ||
3267 | if (overlay_debugging) | |
3268 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3269 | if (section_is_mapped (osect)) |
c5aa993b | 3270 | { |
5af949e3 | 3271 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3272 | const char *name; |
3273 | bfd_vma lma, vma; | |
3274 | int size; | |
3275 | ||
3276 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3277 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3278 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3279 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3280 | ||
3281 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3282 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3283 | puts_filtered (" - "); |
5af949e3 | 3284 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3285 | printf_filtered (", mapped at "); |
5af949e3 | 3286 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3287 | puts_filtered (" - "); |
5af949e3 | 3288 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3289 | puts_filtered ("\n"); |
3290 | ||
3291 | nmapped++; | |
3292 | } | |
c906108c | 3293 | if (nmapped == 0) |
a3f17187 | 3294 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3295 | } |
3296 | ||
3297 | /* Function: map_overlay_command | |
3298 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3299 | ||
5d3055ad | 3300 | static void |
fba45db2 | 3301 | map_overlay_command (char *args, int from_tty) |
c906108c | 3302 | { |
c5aa993b JM |
3303 | struct objfile *objfile, *objfile2; |
3304 | struct obj_section *sec, *sec2; | |
c906108c SS |
3305 | |
3306 | if (!overlay_debugging) | |
3e43a32a MS |
3307 | error (_("Overlay debugging not enabled. Use " |
3308 | "either the 'overlay auto' or\n" | |
3309 | "the 'overlay manual' command.")); | |
c906108c SS |
3310 | |
3311 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3312 | error (_("Argument required: name of an overlay section")); |
c906108c | 3313 | |
c378eb4e | 3314 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3315 | ALL_OBJSECTIONS (objfile, sec) |
3316 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3317 | { |
c378eb4e | 3318 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3319 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3320 | continue; /* not an overlay section */ |
3321 | ||
c378eb4e | 3322 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3323 | sec->ovly_mapped = 1; |
3324 | ||
3325 | /* Next, make a pass and unmap any sections that are | |
3326 | overlapped by this new section: */ | |
3327 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3328 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3329 | { |
3330 | if (info_verbose) | |
a3f17187 | 3331 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3332 | bfd_section_name (objfile->obfd, |
3333 | sec2->the_bfd_section)); | |
c378eb4e | 3334 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3335 | } |
3336 | return; | |
3337 | } | |
8a3fe4f8 | 3338 | error (_("No overlay section called %s"), args); |
c906108c SS |
3339 | } |
3340 | ||
3341 | /* Function: unmap_overlay_command | |
5417f6dc | 3342 | Mark the overlay section as unmapped |
c906108c SS |
3343 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3344 | ||
5d3055ad | 3345 | static void |
fba45db2 | 3346 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3347 | { |
c5aa993b | 3348 | struct objfile *objfile; |
c906108c SS |
3349 | struct obj_section *sec; |
3350 | ||
3351 | if (!overlay_debugging) | |
3e43a32a MS |
3352 | error (_("Overlay debugging not enabled. " |
3353 | "Use either the 'overlay auto' or\n" | |
3354 | "the 'overlay manual' command.")); | |
c906108c SS |
3355 | |
3356 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3357 | error (_("Argument required: name of an overlay section")); |
c906108c | 3358 | |
c378eb4e | 3359 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3360 | ALL_OBJSECTIONS (objfile, sec) |
3361 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3362 | { |
3363 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3364 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3365 | sec->ovly_mapped = 0; |
3366 | return; | |
3367 | } | |
8a3fe4f8 | 3368 | error (_("No overlay section called %s"), args); |
c906108c SS |
3369 | } |
3370 | ||
3371 | /* Function: overlay_auto_command | |
3372 | A utility command to turn on overlay debugging. | |
c378eb4e | 3373 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3374 | |
3375 | static void | |
fba45db2 | 3376 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3377 | { |
d874f1e2 | 3378 | overlay_debugging = ovly_auto; |
1900040c | 3379 | enable_overlay_breakpoints (); |
c906108c | 3380 | if (info_verbose) |
a3f17187 | 3381 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3382 | } |
3383 | ||
3384 | /* Function: overlay_manual_command | |
3385 | A utility command to turn on overlay debugging. | |
c378eb4e | 3386 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3387 | |
3388 | static void | |
fba45db2 | 3389 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3390 | { |
d874f1e2 | 3391 | overlay_debugging = ovly_on; |
1900040c | 3392 | disable_overlay_breakpoints (); |
c906108c | 3393 | if (info_verbose) |
a3f17187 | 3394 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3395 | } |
3396 | ||
3397 | /* Function: overlay_off_command | |
3398 | A utility command to turn on overlay debugging. | |
c378eb4e | 3399 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3400 | |
3401 | static void | |
fba45db2 | 3402 | overlay_off_command (char *args, int from_tty) |
c906108c | 3403 | { |
d874f1e2 | 3404 | overlay_debugging = ovly_off; |
1900040c | 3405 | disable_overlay_breakpoints (); |
c906108c | 3406 | if (info_verbose) |
a3f17187 | 3407 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3408 | } |
3409 | ||
3410 | static void | |
fba45db2 | 3411 | overlay_load_command (char *args, int from_tty) |
c906108c | 3412 | { |
e17c207e UW |
3413 | struct gdbarch *gdbarch = get_current_arch (); |
3414 | ||
3415 | if (gdbarch_overlay_update_p (gdbarch)) | |
3416 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3417 | else |
8a3fe4f8 | 3418 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3419 | } |
3420 | ||
3421 | /* Function: overlay_command | |
c378eb4e | 3422 | A place-holder for a mis-typed command. */ |
c906108c | 3423 | |
c378eb4e | 3424 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3425 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3426 | |
3427 | static void | |
fba45db2 | 3428 | overlay_command (char *args, int from_tty) |
c906108c | 3429 | { |
c5aa993b | 3430 | printf_unfiltered |
c906108c SS |
3431 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3432 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3433 | } | |
3434 | ||
c906108c SS |
3435 | /* Target Overlays for the "Simplest" overlay manager: |
3436 | ||
5417f6dc RM |
3437 | This is GDB's default target overlay layer. It works with the |
3438 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3439 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3440 | so targets that use a different runtime overlay manager can |
c906108c SS |
3441 | substitute their own overlay_update function and take over the |
3442 | function pointer. | |
3443 | ||
3444 | The overlay_update function pokes around in the target's data structures | |
3445 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3446 | this information. | |
3447 | ||
3448 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3449 | unsigned _novlys; /# number of overlay sections #/ |
3450 | unsigned _ovly_table[_novlys][4] = { | |
3451 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3452 | {..., ..., ..., ...}, | |
3453 | } | |
3454 | unsigned _novly_regions; /# number of overlay regions #/ | |
3455 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3456 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3457 | {..., ..., ...}, | |
3458 | } | |
c906108c SS |
3459 | These functions will attempt to update GDB's mappedness state in the |
3460 | symbol section table, based on the target's mappedness state. | |
3461 | ||
3462 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3463 | attempt to detect when the cached copy is invalidated. The main | |
3464 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3465 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3466 | the target (whenever possible). */ |
c906108c SS |
3467 | |
3468 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3469 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3470 | static unsigned cache_novlys = 0; |
c906108c | 3471 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3472 | enum ovly_index |
3473 | { | |
3474 | VMA, SIZE, LMA, MAPPED | |
3475 | }; | |
c906108c | 3476 | |
c378eb4e | 3477 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3478 | |
c906108c | 3479 | static void |
fba45db2 | 3480 | simple_free_overlay_table (void) |
c906108c SS |
3481 | { |
3482 | if (cache_ovly_table) | |
b8c9b27d | 3483 | xfree (cache_ovly_table); |
c5aa993b | 3484 | cache_novlys = 0; |
c906108c SS |
3485 | cache_ovly_table = NULL; |
3486 | cache_ovly_table_base = 0; | |
3487 | } | |
3488 | ||
9216df95 | 3489 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3490 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3491 | |
c906108c | 3492 | static void |
9216df95 | 3493 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3494 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3495 | { |
c378eb4e | 3496 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3497 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3498 | int i; |
c906108c | 3499 | |
9216df95 | 3500 | read_memory (memaddr, buf, len * size); |
c906108c | 3501 | for (i = 0; i < len; i++) |
e17a4113 | 3502 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3503 | } |
3504 | ||
3505 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3506 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3507 | |
c5aa993b | 3508 | static int |
fba45db2 | 3509 | simple_read_overlay_table (void) |
c906108c | 3510 | { |
7c7b6655 TT |
3511 | struct minimal_symbol *novlys_msym; |
3512 | struct bound_minimal_symbol ovly_table_msym; | |
9216df95 UW |
3513 | struct gdbarch *gdbarch; |
3514 | int word_size; | |
e17a4113 | 3515 | enum bfd_endian byte_order; |
c906108c SS |
3516 | |
3517 | simple_free_overlay_table (); | |
9b27852e | 3518 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3519 | if (! novlys_msym) |
c906108c | 3520 | { |
8a3fe4f8 | 3521 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3522 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3523 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3524 | return 0; |
c906108c | 3525 | } |
0d43edd1 | 3526 | |
7c7b6655 TT |
3527 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3528 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3529 | { |
8a3fe4f8 | 3530 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3531 | "`_ovly_table' array\n" |
8a3fe4f8 | 3532 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3533 | return 0; |
3534 | } | |
3535 | ||
7c7b6655 | 3536 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3537 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3538 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3539 | |
e17a4113 UW |
3540 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3541 | 4, byte_order); | |
0d43edd1 JB |
3542 | cache_ovly_table |
3543 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
7c7b6655 | 3544 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym.minsym); |
0d43edd1 | 3545 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3546 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3547 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3548 | |
c5aa993b | 3549 | return 1; /* SUCCESS */ |
c906108c SS |
3550 | } |
3551 | ||
5417f6dc | 3552 | /* Function: simple_overlay_update_1 |
c906108c SS |
3553 | A helper function for simple_overlay_update. Assuming a cached copy |
3554 | of _ovly_table exists, look through it to find an entry whose vma, | |
3555 | lma and size match those of OSECT. Re-read the entry and make sure | |
3556 | it still matches OSECT (else the table may no longer be valid). | |
3557 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3558 | success, 0 for failure. */ | |
3559 | ||
3560 | static int | |
fba45db2 | 3561 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3562 | { |
3563 | int i, size; | |
fbd35540 MS |
3564 | bfd *obfd = osect->objfile->obfd; |
3565 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3566 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3567 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3568 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3569 | |
2c500098 | 3570 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3571 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3572 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3573 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3574 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3575 | { |
9216df95 UW |
3576 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3577 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3578 | 4, word_size, byte_order); |
fbd35540 MS |
3579 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3580 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3581 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3582 | { |
3583 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3584 | return 1; | |
3585 | } | |
c378eb4e | 3586 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3587 | return 0; |
3588 | } | |
3589 | return 0; | |
3590 | } | |
3591 | ||
3592 | /* Function: simple_overlay_update | |
5417f6dc RM |
3593 | If OSECT is NULL, then update all sections' mapped state |
3594 | (after re-reading the entire target _ovly_table). | |
3595 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3596 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3597 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3598 | re-read the entire cache, and go ahead and update all sections. */ |
3599 | ||
1c772458 | 3600 | void |
fba45db2 | 3601 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3602 | { |
c5aa993b | 3603 | struct objfile *objfile; |
c906108c | 3604 | |
c378eb4e | 3605 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3606 | if (osect) |
c378eb4e | 3607 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3608 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3609 | { |
3610 | /* Does its cached location match what's currently in the | |
3611 | symtab? */ | |
3612 | struct minimal_symbol *minsym | |
3613 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3614 | ||
3615 | if (minsym == NULL) | |
3616 | error (_("Error reading inferior's overlay table: couldn't " | |
3617 | "find `_ovly_table' array\n" | |
3618 | "in inferior. Use `overlay manual' mode.")); | |
3619 | ||
3620 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3621 | /* Then go ahead and try to look up this single section in | |
3622 | the cache. */ | |
3623 | if (simple_overlay_update_1 (osect)) | |
3624 | /* Found it! We're done. */ | |
3625 | return; | |
3626 | } | |
c906108c SS |
3627 | |
3628 | /* Cached table no good: need to read the entire table anew. | |
3629 | Or else we want all the sections, in which case it's actually | |
3630 | more efficient to read the whole table in one block anyway. */ | |
3631 | ||
0d43edd1 JB |
3632 | if (! simple_read_overlay_table ()) |
3633 | return; | |
3634 | ||
c378eb4e | 3635 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3636 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3637 | if (section_is_overlay (osect)) |
c5aa993b JM |
3638 | { |
3639 | int i, size; | |
fbd35540 MS |
3640 | bfd *obfd = osect->objfile->obfd; |
3641 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3642 | |
2c500098 | 3643 | size = bfd_get_section_size (bsect); |
c5aa993b | 3644 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3645 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3646 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3647 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3648 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3649 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3650 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3651 | } |
3652 | } | |
c906108c SS |
3653 | } |
3654 | ||
086df311 DJ |
3655 | /* Set the output sections and output offsets for section SECTP in |
3656 | ABFD. The relocation code in BFD will read these offsets, so we | |
3657 | need to be sure they're initialized. We map each section to itself, | |
3658 | with no offset; this means that SECTP->vma will be honored. */ | |
3659 | ||
3660 | static void | |
3661 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3662 | { | |
3663 | sectp->output_section = sectp; | |
3664 | sectp->output_offset = 0; | |
3665 | } | |
3666 | ||
ac8035ab TG |
3667 | /* Default implementation for sym_relocate. */ |
3668 | ||
ac8035ab TG |
3669 | bfd_byte * |
3670 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3671 | bfd_byte *buf) | |
3672 | { | |
3019eac3 DE |
3673 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3674 | DWO file. */ | |
3675 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3676 | |
3677 | /* We're only interested in sections with relocation | |
3678 | information. */ | |
3679 | if ((sectp->flags & SEC_RELOC) == 0) | |
3680 | return NULL; | |
3681 | ||
3682 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3683 | all sections begin at 0. */ | |
3684 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3685 | ||
3686 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3687 | } | |
3688 | ||
086df311 DJ |
3689 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3690 | contents are stored in BUF if it is non-NULL, or returned in a | |
3691 | malloc'd buffer otherwise. | |
3692 | ||
3693 | For some platforms and debug info formats, shared libraries contain | |
3694 | relocations against the debug sections (particularly for DWARF-2; | |
3695 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3696 | the version of the linker in use). Also, ELF object files naturally | |
3697 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3698 | the relocations in order to get the locations of symbols correct. |
3699 | Another example that may require relocation processing, is the | |
3700 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3701 | debug section. */ | |
086df311 DJ |
3702 | |
3703 | bfd_byte * | |
ac8035ab TG |
3704 | symfile_relocate_debug_section (struct objfile *objfile, |
3705 | asection *sectp, bfd_byte *buf) | |
086df311 | 3706 | { |
ac8035ab | 3707 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3708 | |
ac8035ab | 3709 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3710 | } |
c906108c | 3711 | |
31d99776 DJ |
3712 | struct symfile_segment_data * |
3713 | get_symfile_segment_data (bfd *abfd) | |
3714 | { | |
00b5771c | 3715 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3716 | |
3717 | if (sf == NULL) | |
3718 | return NULL; | |
3719 | ||
3720 | return sf->sym_segments (abfd); | |
3721 | } | |
3722 | ||
3723 | void | |
3724 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3725 | { | |
3726 | xfree (data->segment_bases); | |
3727 | xfree (data->segment_sizes); | |
3728 | xfree (data->segment_info); | |
3729 | xfree (data); | |
3730 | } | |
3731 | ||
28c32713 JB |
3732 | /* Given: |
3733 | - DATA, containing segment addresses from the object file ABFD, and | |
3734 | the mapping from ABFD's sections onto the segments that own them, | |
3735 | and | |
3736 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3737 | segment addresses reported by the target, | |
3738 | store the appropriate offsets for each section in OFFSETS. | |
3739 | ||
3740 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3741 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3742 | ||
8d385431 DJ |
3743 | If there are more entries, then ignore the extra. The target may |
3744 | not be able to distinguish between an empty data segment and a | |
3745 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3746 | |
31d99776 | 3747 | int |
3189cb12 DE |
3748 | symfile_map_offsets_to_segments (bfd *abfd, |
3749 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3750 | struct section_offsets *offsets, |
3751 | int num_segment_bases, | |
3752 | const CORE_ADDR *segment_bases) | |
3753 | { | |
3754 | int i; | |
3755 | asection *sect; | |
3756 | ||
28c32713 JB |
3757 | /* It doesn't make sense to call this function unless you have some |
3758 | segment base addresses. */ | |
202b96c1 | 3759 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3760 | |
31d99776 DJ |
3761 | /* If we do not have segment mappings for the object file, we |
3762 | can not relocate it by segments. */ | |
3763 | gdb_assert (data != NULL); | |
3764 | gdb_assert (data->num_segments > 0); | |
3765 | ||
31d99776 DJ |
3766 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3767 | { | |
31d99776 DJ |
3768 | int which = data->segment_info[i]; |
3769 | ||
28c32713 JB |
3770 | gdb_assert (0 <= which && which <= data->num_segments); |
3771 | ||
3772 | /* Don't bother computing offsets for sections that aren't | |
3773 | loaded as part of any segment. */ | |
3774 | if (! which) | |
3775 | continue; | |
3776 | ||
3777 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3778 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3779 | if (which > num_segment_bases) |
28c32713 | 3780 | which = num_segment_bases; |
31d99776 | 3781 | |
28c32713 JB |
3782 | offsets->offsets[i] = (segment_bases[which - 1] |
3783 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3784 | } |
3785 | ||
3786 | return 1; | |
3787 | } | |
3788 | ||
3789 | static void | |
3790 | symfile_find_segment_sections (struct objfile *objfile) | |
3791 | { | |
3792 | bfd *abfd = objfile->obfd; | |
3793 | int i; | |
3794 | asection *sect; | |
3795 | struct symfile_segment_data *data; | |
3796 | ||
3797 | data = get_symfile_segment_data (objfile->obfd); | |
3798 | if (data == NULL) | |
3799 | return; | |
3800 | ||
3801 | if (data->num_segments != 1 && data->num_segments != 2) | |
3802 | { | |
3803 | free_symfile_segment_data (data); | |
3804 | return; | |
3805 | } | |
3806 | ||
3807 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3808 | { | |
31d99776 DJ |
3809 | int which = data->segment_info[i]; |
3810 | ||
3811 | if (which == 1) | |
3812 | { | |
3813 | if (objfile->sect_index_text == -1) | |
3814 | objfile->sect_index_text = sect->index; | |
3815 | ||
3816 | if (objfile->sect_index_rodata == -1) | |
3817 | objfile->sect_index_rodata = sect->index; | |
3818 | } | |
3819 | else if (which == 2) | |
3820 | { | |
3821 | if (objfile->sect_index_data == -1) | |
3822 | objfile->sect_index_data = sect->index; | |
3823 | ||
3824 | if (objfile->sect_index_bss == -1) | |
3825 | objfile->sect_index_bss = sect->index; | |
3826 | } | |
3827 | } | |
3828 | ||
3829 | free_symfile_segment_data (data); | |
3830 | } | |
3831 | ||
76ad5e1e NB |
3832 | /* Listen for free_objfile events. */ |
3833 | ||
3834 | static void | |
3835 | symfile_free_objfile (struct objfile *objfile) | |
3836 | { | |
3837 | /* Remove the target sections of user-added objfiles. */ | |
3838 | if (objfile != 0 && objfile->flags & OBJF_USERLOADED) | |
3839 | remove_target_sections ((void *) objfile); | |
3840 | } | |
3841 | ||
c906108c | 3842 | void |
fba45db2 | 3843 | _initialize_symfile (void) |
c906108c SS |
3844 | { |
3845 | struct cmd_list_element *c; | |
c5aa993b | 3846 | |
76ad5e1e NB |
3847 | observer_attach_free_objfile (symfile_free_objfile); |
3848 | ||
1a966eab AC |
3849 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3850 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3851 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3852 | to execute."), &cmdlist); |
5ba2abeb | 3853 | set_cmd_completer (c, filename_completer); |
c906108c | 3854 | |
1a966eab | 3855 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3856 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3857 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3858 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3859 | The optional arguments are section-name section-address pairs and\n\ |
3860 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3861 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3862 | &cmdlist); |
5ba2abeb | 3863 | set_cmd_completer (c, filename_completer); |
c906108c | 3864 | |
63644780 NB |
3865 | c = add_cmd ("remove-symbol-file", class_files, |
3866 | remove_symbol_file_command, _("\ | |
3867 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3868 | Usage: remove-symbol-file FILENAME\n\ | |
3869 | remove-symbol-file -a ADDRESS\n\ | |
3870 | The file to remove can be identified by its filename or by an address\n\ | |
3871 | that lies within the boundaries of this symbol file in memory."), | |
3872 | &cmdlist); | |
3873 | ||
1a966eab AC |
3874 | c = add_cmd ("load", class_files, load_command, _("\ |
3875 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3876 | for access from GDB.\n\ |
3877 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3878 | set_cmd_completer (c, filename_completer); |
c906108c | 3879 | |
c5aa993b | 3880 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3881 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3882 | "overlay ", 0, &cmdlist); |
3883 | ||
3884 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3885 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3886 | ||
c5aa993b | 3887 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3888 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3889 | |
c5aa993b | 3890 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3891 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3892 | |
c5aa993b | 3893 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3894 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3895 | |
c5aa993b | 3896 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3897 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3898 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3899 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3900 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3901 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3902 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3903 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3904 | |
3905 | /* Filename extension to source language lookup table: */ | |
3906 | init_filename_language_table (); | |
26c41df3 AC |
3907 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3908 | &ext_args, _("\ | |
3909 | Set mapping between filename extension and source language."), _("\ | |
3910 | Show mapping between filename extension and source language."), _("\ | |
3911 | Usage: set extension-language .foo bar"), | |
3912 | set_ext_lang_command, | |
920d2a44 | 3913 | show_ext_args, |
26c41df3 | 3914 | &setlist, &showlist); |
c906108c | 3915 | |
c5aa993b | 3916 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3917 | _("All filename extensions associated with a source language.")); |
917317f4 | 3918 | |
525226b5 AC |
3919 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3920 | &debug_file_directory, _("\ | |
24ddea62 JK |
3921 | Set the directories where separate debug symbols are searched for."), _("\ |
3922 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3923 | Separate debug symbols are first searched for in the same\n\ |
3924 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3925 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3926 | each global debug-file-directory component prepended."), |
525226b5 | 3927 | NULL, |
920d2a44 | 3928 | show_debug_file_directory, |
525226b5 | 3929 | &setlist, &showlist); |
c906108c | 3930 | } |