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" |
c906108c | 60 | |
c906108c SS |
61 | #include <sys/types.h> |
62 | #include <fcntl.h> | |
63 | #include "gdb_string.h" | |
64 | #include "gdb_stat.h" | |
65 | #include <ctype.h> | |
66 | #include <time.h> | |
2b71414d | 67 | #include <sys/time.h> |
c906108c | 68 | |
ccefe4c4 | 69 | #include "psymtab.h" |
c906108c | 70 | |
3e43a32a MS |
71 | int (*deprecated_ui_load_progress_hook) (const char *section, |
72 | unsigned long num); | |
9a4105ab | 73 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
74 | unsigned long section_sent, |
75 | unsigned long section_size, | |
76 | unsigned long total_sent, | |
c2d11a7d | 77 | unsigned long total_size); |
769d7dc4 AC |
78 | void (*deprecated_pre_add_symbol_hook) (const char *); |
79 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 80 | |
74b7792f AC |
81 | static void clear_symtab_users_cleanup (void *ignore); |
82 | ||
c378eb4e MS |
83 | /* Global variables owned by this file. */ |
84 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 85 | |
c378eb4e | 86 | /* Functions this file defines. */ |
c906108c | 87 | |
a14ed312 | 88 | static void load_command (char *, int); |
c906108c | 89 | |
d7db6da9 FN |
90 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
91 | ||
a14ed312 | 92 | static void add_symbol_file_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | bfd *symfile_bfd_open (char *); |
c906108c | 95 | |
0e931cf0 JB |
96 | int get_section_index (struct objfile *, char *); |
97 | ||
00b5771c | 98 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 99 | |
a14ed312 | 100 | static void decrement_reading_symtab (void *); |
c906108c | 101 | |
a14ed312 | 102 | static void overlay_invalidate_all (void); |
c906108c | 103 | |
a14ed312 | 104 | static void overlay_auto_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | static void overlay_manual_command (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | static void overlay_off_command (char *, int); |
c906108c | 109 | |
a14ed312 | 110 | static void overlay_load_command (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void overlay_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | static void simple_free_overlay_table (void); |
c906108c | 115 | |
e17a4113 UW |
116 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
117 | enum bfd_endian); | |
c906108c | 118 | |
a14ed312 | 119 | static int simple_read_overlay_table (void); |
c906108c | 120 | |
a14ed312 | 121 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 122 | |
a14ed312 | 123 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 124 | |
a14ed312 | 125 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 126 | |
a14ed312 | 127 | static void init_filename_language_table (void); |
392a587b | 128 | |
31d99776 DJ |
129 | static void symfile_find_segment_sections (struct objfile *objfile); |
130 | ||
a14ed312 | 131 | void _initialize_symfile (void); |
c906108c SS |
132 | |
133 | /* List of all available sym_fns. On gdb startup, each object file reader | |
134 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 135 | prepared to read. */ |
c906108c | 136 | |
00b5771c TT |
137 | typedef const struct sym_fns *sym_fns_ptr; |
138 | DEF_VEC_P (sym_fns_ptr); | |
139 | ||
140 | static VEC (sym_fns_ptr) *symtab_fns = NULL; | |
c906108c | 141 | |
b7209cb4 FF |
142 | /* If non-zero, shared library symbols will be added automatically |
143 | when the inferior is created, new libraries are loaded, or when | |
144 | attaching to the inferior. This is almost always what users will | |
145 | want to have happen; but for very large programs, the startup time | |
146 | will be excessive, and so if this is a problem, the user can clear | |
147 | this flag and then add the shared library symbols as needed. Note | |
148 | that there is a potential for confusion, since if the shared | |
c906108c | 149 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 150 | report all the functions that are actually present. */ |
c906108c SS |
151 | |
152 | int auto_solib_add = 1; | |
c906108c | 153 | \f |
c5aa993b | 154 | |
0d14a781 | 155 | /* True if we are reading a symbol table. */ |
c906108c SS |
156 | |
157 | int currently_reading_symtab = 0; | |
158 | ||
159 | static void | |
fba45db2 | 160 | decrement_reading_symtab (void *dummy) |
c906108c SS |
161 | { |
162 | currently_reading_symtab--; | |
2cb9c859 | 163 | gdb_assert (currently_reading_symtab >= 0); |
c906108c SS |
164 | } |
165 | ||
ccefe4c4 TT |
166 | /* Increment currently_reading_symtab and return a cleanup that can be |
167 | used to decrement it. */ | |
3b7bacac | 168 | |
ccefe4c4 TT |
169 | struct cleanup * |
170 | increment_reading_symtab (void) | |
c906108c | 171 | { |
ccefe4c4 | 172 | ++currently_reading_symtab; |
2cb9c859 | 173 | gdb_assert (currently_reading_symtab > 0); |
ccefe4c4 | 174 | return make_cleanup (decrement_reading_symtab, NULL); |
c906108c SS |
175 | } |
176 | ||
5417f6dc RM |
177 | /* Remember the lowest-addressed loadable section we've seen. |
178 | This function is called via bfd_map_over_sections. | |
c906108c SS |
179 | |
180 | In case of equal vmas, the section with the largest size becomes the | |
181 | lowest-addressed loadable section. | |
182 | ||
183 | If the vmas and sizes are equal, the last section is considered the | |
184 | lowest-addressed loadable section. */ | |
185 | ||
186 | void | |
4efb68b1 | 187 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 188 | { |
c5aa993b | 189 | asection **lowest = (asection **) obj; |
c906108c | 190 | |
eb73e134 | 191 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
192 | return; |
193 | if (!*lowest) | |
194 | *lowest = sect; /* First loadable section */ | |
195 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
196 | *lowest = sect; /* A lower loadable section */ | |
197 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
198 | && (bfd_section_size (abfd, (*lowest)) | |
199 | <= bfd_section_size (abfd, sect))) | |
200 | *lowest = sect; | |
201 | } | |
202 | ||
d76488d8 TT |
203 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
204 | new object's 'num_sections' field is set to 0; it must be updated | |
205 | by the caller. */ | |
a39a16c4 MM |
206 | |
207 | struct section_addr_info * | |
208 | alloc_section_addr_info (size_t num_sections) | |
209 | { | |
210 | struct section_addr_info *sap; | |
211 | size_t size; | |
212 | ||
213 | size = (sizeof (struct section_addr_info) | |
214 | + sizeof (struct other_sections) * (num_sections - 1)); | |
215 | sap = (struct section_addr_info *) xmalloc (size); | |
216 | memset (sap, 0, size); | |
a39a16c4 MM |
217 | |
218 | return sap; | |
219 | } | |
62557bbc KB |
220 | |
221 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 222 | an existing section table. */ |
62557bbc KB |
223 | |
224 | extern struct section_addr_info * | |
0542c86d PA |
225 | build_section_addr_info_from_section_table (const struct target_section *start, |
226 | const struct target_section *end) | |
62557bbc KB |
227 | { |
228 | struct section_addr_info *sap; | |
0542c86d | 229 | const struct target_section *stp; |
62557bbc KB |
230 | int oidx; |
231 | ||
a39a16c4 | 232 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
233 | |
234 | for (stp = start, oidx = 0; stp != end; stp++) | |
235 | { | |
5417f6dc | 236 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 237 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 238 | && oidx < end - start) |
62557bbc KB |
239 | { |
240 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 241 | sap->other[oidx].name |
fbd35540 | 242 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
65cf3563 TT |
243 | sap->other[oidx].sectindex |
244 | = gdb_bfd_section_index (stp->bfd, stp->the_bfd_section); | |
62557bbc KB |
245 | oidx++; |
246 | } | |
247 | } | |
248 | ||
d76488d8 TT |
249 | sap->num_sections = oidx; |
250 | ||
62557bbc KB |
251 | return sap; |
252 | } | |
253 | ||
82ccf5a5 | 254 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 255 | |
82ccf5a5 JK |
256 | static struct section_addr_info * |
257 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
258 | { |
259 | struct section_addr_info *sap; | |
260 | int i; | |
261 | struct bfd_section *sec; | |
262 | ||
82ccf5a5 JK |
263 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
264 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
265 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 266 | { |
82ccf5a5 JK |
267 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
268 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 269 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
270 | i++; |
271 | } | |
d76488d8 TT |
272 | |
273 | sap->num_sections = i; | |
274 | ||
089b4803 TG |
275 | return sap; |
276 | } | |
277 | ||
82ccf5a5 JK |
278 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
279 | ||
280 | struct section_addr_info * | |
281 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
282 | { | |
283 | struct section_addr_info *sap; | |
284 | int i; | |
285 | ||
286 | /* Before reread_symbols gets rewritten it is not safe to call: | |
287 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
288 | */ | |
289 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 290 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
291 | { |
292 | int sectindex = sap->other[i].sectindex; | |
293 | ||
294 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
295 | } | |
296 | return sap; | |
297 | } | |
62557bbc | 298 | |
c378eb4e | 299 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
300 | |
301 | extern void | |
302 | free_section_addr_info (struct section_addr_info *sap) | |
303 | { | |
304 | int idx; | |
305 | ||
a39a16c4 | 306 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 307 | xfree (sap->other[idx].name); |
b8c9b27d | 308 | xfree (sap); |
62557bbc KB |
309 | } |
310 | ||
e8289572 | 311 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 312 | |
e8289572 JB |
313 | static void |
314 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 315 | { |
e8289572 | 316 | asection *sect; |
c906108c | 317 | int i; |
5417f6dc | 318 | |
b8fbeb18 | 319 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 320 | if (sect) |
b8fbeb18 EZ |
321 | objfile->sect_index_text = sect->index; |
322 | ||
323 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 324 | if (sect) |
b8fbeb18 EZ |
325 | objfile->sect_index_data = sect->index; |
326 | ||
327 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 328 | if (sect) |
b8fbeb18 EZ |
329 | objfile->sect_index_bss = sect->index; |
330 | ||
331 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 332 | if (sect) |
b8fbeb18 EZ |
333 | objfile->sect_index_rodata = sect->index; |
334 | ||
bbcd32ad FF |
335 | /* This is where things get really weird... We MUST have valid |
336 | indices for the various sect_index_* members or gdb will abort. | |
337 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
338 | accomodate that. First, check for a file with the standard |
339 | one or two segments. */ | |
340 | ||
341 | symfile_find_segment_sections (objfile); | |
342 | ||
343 | /* Except when explicitly adding symbol files at some address, | |
344 | section_offsets contains nothing but zeros, so it doesn't matter | |
345 | which slot in section_offsets the individual sect_index_* members | |
346 | index into. So if they are all zero, it is safe to just point | |
347 | all the currently uninitialized indices to the first slot. But | |
348 | beware: if this is the main executable, it may be relocated | |
349 | later, e.g. by the remote qOffsets packet, and then this will | |
350 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
351 | |
352 | for (i = 0; i < objfile->num_sections; i++) | |
353 | { | |
354 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
355 | { | |
356 | break; | |
357 | } | |
358 | } | |
359 | if (i == objfile->num_sections) | |
360 | { | |
361 | if (objfile->sect_index_text == -1) | |
362 | objfile->sect_index_text = 0; | |
363 | if (objfile->sect_index_data == -1) | |
364 | objfile->sect_index_data = 0; | |
365 | if (objfile->sect_index_bss == -1) | |
366 | objfile->sect_index_bss = 0; | |
367 | if (objfile->sect_index_rodata == -1) | |
368 | objfile->sect_index_rodata = 0; | |
369 | } | |
b8fbeb18 | 370 | } |
c906108c | 371 | |
c1bd25fd DJ |
372 | /* The arguments to place_section. */ |
373 | ||
374 | struct place_section_arg | |
375 | { | |
376 | struct section_offsets *offsets; | |
377 | CORE_ADDR lowest; | |
378 | }; | |
379 | ||
380 | /* Find a unique offset to use for loadable section SECT if | |
381 | the user did not provide an offset. */ | |
382 | ||
2c0b251b | 383 | static void |
c1bd25fd DJ |
384 | place_section (bfd *abfd, asection *sect, void *obj) |
385 | { | |
386 | struct place_section_arg *arg = obj; | |
387 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
388 | int done; | |
3bd72c6f | 389 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 390 | |
2711e456 DJ |
391 | /* We are only interested in allocated sections. */ |
392 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
393 | return; |
394 | ||
395 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 396 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
397 | return; |
398 | ||
399 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
400 | start_addr = (arg->lowest + align - 1) & -align; |
401 | ||
c1bd25fd DJ |
402 | do { |
403 | asection *cur_sec; | |
c1bd25fd | 404 | |
c1bd25fd DJ |
405 | done = 1; |
406 | ||
407 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
408 | { | |
409 | int indx = cur_sec->index; | |
c1bd25fd DJ |
410 | |
411 | /* We don't need to compare against ourself. */ | |
412 | if (cur_sec == sect) | |
413 | continue; | |
414 | ||
2711e456 DJ |
415 | /* We can only conflict with allocated sections. */ |
416 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
417 | continue; |
418 | ||
419 | /* If the section offset is 0, either the section has not been placed | |
420 | yet, or it was the lowest section placed (in which case LOWEST | |
421 | will be past its end). */ | |
422 | if (offsets[indx] == 0) | |
423 | continue; | |
424 | ||
425 | /* If this section would overlap us, then we must move up. */ | |
426 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
427 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
428 | { | |
429 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
430 | start_addr = (start_addr + align - 1) & -align; | |
431 | done = 0; | |
3bd72c6f | 432 | break; |
c1bd25fd DJ |
433 | } |
434 | ||
435 | /* Otherwise, we appear to be OK. So far. */ | |
436 | } | |
437 | } | |
438 | while (!done); | |
439 | ||
65cf3563 | 440 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 441 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 442 | } |
e8289572 | 443 | |
75242ef4 JK |
444 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
445 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
446 | entries. */ | |
e8289572 JB |
447 | |
448 | void | |
75242ef4 JK |
449 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
450 | int num_sections, | |
3189cb12 | 451 | const struct section_addr_info *addrs) |
e8289572 JB |
452 | { |
453 | int i; | |
454 | ||
75242ef4 | 455 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 456 | |
c378eb4e | 457 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 458 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 459 | { |
3189cb12 | 460 | const struct other_sections *osp; |
e8289572 | 461 | |
75242ef4 | 462 | osp = &addrs->other[i]; |
5488dafb | 463 | if (osp->sectindex == -1) |
e8289572 JB |
464 | continue; |
465 | ||
c378eb4e | 466 | /* Record all sections in offsets. */ |
e8289572 | 467 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 468 | the BFD index. */ |
75242ef4 JK |
469 | section_offsets->offsets[osp->sectindex] = osp->addr; |
470 | } | |
471 | } | |
472 | ||
1276c759 JK |
473 | /* Transform section name S for a name comparison. prelink can split section |
474 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
475 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
476 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
477 | (`.sbss') section has invalid (increased) virtual address. */ | |
478 | ||
479 | static const char * | |
480 | addr_section_name (const char *s) | |
481 | { | |
482 | if (strcmp (s, ".dynbss") == 0) | |
483 | return ".bss"; | |
484 | if (strcmp (s, ".sdynbss") == 0) | |
485 | return ".sbss"; | |
486 | ||
487 | return s; | |
488 | } | |
489 | ||
82ccf5a5 JK |
490 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
491 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
492 | ||
493 | static int | |
494 | addrs_section_compar (const void *ap, const void *bp) | |
495 | { | |
496 | const struct other_sections *a = *((struct other_sections **) ap); | |
497 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 498 | int retval; |
82ccf5a5 | 499 | |
1276c759 | 500 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
501 | if (retval) |
502 | return retval; | |
503 | ||
5488dafb | 504 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
505 | } |
506 | ||
507 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
508 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
509 | ||
510 | static struct other_sections ** | |
511 | addrs_section_sort (struct section_addr_info *addrs) | |
512 | { | |
513 | struct other_sections **array; | |
514 | int i; | |
515 | ||
516 | /* `+ 1' for the NULL terminator. */ | |
517 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
d76488d8 | 518 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
519 | array[i] = &addrs->other[i]; |
520 | array[i] = NULL; | |
521 | ||
522 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
523 | ||
524 | return array; | |
525 | } | |
526 | ||
75242ef4 | 527 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
528 | also SECTINDEXes specific to ABFD there. This function can be used to |
529 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
530 | |
531 | void | |
532 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
533 | { | |
534 | asection *lower_sect; | |
75242ef4 JK |
535 | CORE_ADDR lower_offset; |
536 | int i; | |
82ccf5a5 JK |
537 | struct cleanup *my_cleanup; |
538 | struct section_addr_info *abfd_addrs; | |
539 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
540 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
541 | |
542 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
543 | continguous sections. */ |
544 | lower_sect = NULL; | |
545 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
546 | if (lower_sect == NULL) |
547 | { | |
548 | warning (_("no loadable sections found in added symbol-file %s"), | |
549 | bfd_get_filename (abfd)); | |
550 | lower_offset = 0; | |
e8289572 | 551 | } |
75242ef4 JK |
552 | else |
553 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
554 | ||
82ccf5a5 JK |
555 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
556 | in ABFD. Section names are not unique - there can be multiple sections of | |
557 | the same name. Also the sections of the same name do not have to be | |
558 | adjacent to each other. Some sections may be present only in one of the | |
559 | files. Even sections present in both files do not have to be in the same | |
560 | order. | |
561 | ||
562 | Use stable sort by name for the sections in both files. Then linearly | |
563 | scan both lists matching as most of the entries as possible. */ | |
564 | ||
565 | addrs_sorted = addrs_section_sort (addrs); | |
566 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
567 | ||
568 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
569 | make_cleanup_free_section_addr_info (abfd_addrs); | |
570 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
571 | make_cleanup (xfree, abfd_addrs_sorted); | |
572 | ||
c378eb4e MS |
573 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
574 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
575 | |
576 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
577 | * addrs->num_sections); | |
578 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
579 | ||
580 | while (*addrs_sorted) | |
581 | { | |
1276c759 | 582 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
583 | |
584 | while (*abfd_addrs_sorted | |
1276c759 JK |
585 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
586 | sect_name) < 0) | |
82ccf5a5 JK |
587 | abfd_addrs_sorted++; |
588 | ||
589 | if (*abfd_addrs_sorted | |
1276c759 JK |
590 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
591 | sect_name) == 0) | |
82ccf5a5 JK |
592 | { |
593 | int index_in_addrs; | |
594 | ||
595 | /* Make the found item directly addressable from ADDRS. */ | |
596 | index_in_addrs = *addrs_sorted - addrs->other; | |
597 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
598 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
599 | ||
600 | /* Never use the same ABFD entry twice. */ | |
601 | abfd_addrs_sorted++; | |
602 | } | |
603 | ||
604 | addrs_sorted++; | |
605 | } | |
606 | ||
75242ef4 JK |
607 | /* Calculate offsets for the loadable sections. |
608 | FIXME! Sections must be in order of increasing loadable section | |
609 | so that contiguous sections can use the lower-offset!!! | |
610 | ||
611 | Adjust offsets if the segments are not contiguous. | |
612 | If the section is contiguous, its offset should be set to | |
613 | the offset of the highest loadable section lower than it | |
614 | (the loadable section directly below it in memory). | |
615 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
616 | ||
d76488d8 | 617 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 618 | { |
82ccf5a5 | 619 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
620 | |
621 | if (sect) | |
75242ef4 | 622 | { |
c378eb4e | 623 | /* This is the index used by BFD. */ |
82ccf5a5 | 624 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
625 | |
626 | if (addrs->other[i].addr != 0) | |
75242ef4 | 627 | { |
82ccf5a5 | 628 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 629 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
630 | } |
631 | else | |
672d9c23 | 632 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
633 | } |
634 | else | |
672d9c23 | 635 | { |
1276c759 JK |
636 | /* addr_section_name transformation is not used for SECT_NAME. */ |
637 | const char *sect_name = addrs->other[i].name; | |
638 | ||
b0fcb67f JK |
639 | /* This section does not exist in ABFD, which is normally |
640 | unexpected and we want to issue a warning. | |
641 | ||
4d9743af JK |
642 | However, the ELF prelinker does create a few sections which are |
643 | marked in the main executable as loadable (they are loaded in | |
644 | memory from the DYNAMIC segment) and yet are not present in | |
645 | separate debug info files. This is fine, and should not cause | |
646 | a warning. Shared libraries contain just the section | |
647 | ".gnu.liblist" but it is not marked as loadable there. There is | |
648 | no other way to identify them than by their name as the sections | |
1276c759 JK |
649 | created by prelink have no special flags. |
650 | ||
651 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
652 | |
653 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 654 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
655 | || (strcmp (sect_name, ".bss") == 0 |
656 | && i > 0 | |
657 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
658 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
659 | || (strcmp (sect_name, ".sbss") == 0 | |
660 | && i > 0 | |
661 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
662 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
663 | warning (_("section %s not found in %s"), sect_name, |
664 | bfd_get_filename (abfd)); | |
665 | ||
672d9c23 | 666 | addrs->other[i].addr = 0; |
5488dafb | 667 | addrs->other[i].sectindex = -1; |
672d9c23 | 668 | } |
75242ef4 | 669 | } |
82ccf5a5 JK |
670 | |
671 | do_cleanups (my_cleanup); | |
75242ef4 JK |
672 | } |
673 | ||
674 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
675 | of how to represent it for fast symbol reading. This is the default | |
676 | version of the sym_fns.sym_offsets function for symbol readers that | |
677 | don't need to do anything special. It allocates a section_offsets table | |
678 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
679 | ||
680 | void | |
681 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 682 | const struct section_addr_info *addrs) |
75242ef4 | 683 | { |
d445b2f6 | 684 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
685 | objfile->section_offsets = (struct section_offsets *) |
686 | obstack_alloc (&objfile->objfile_obstack, | |
687 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
688 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
689 | objfile->num_sections, addrs); | |
e8289572 | 690 | |
c1bd25fd DJ |
691 | /* For relocatable files, all loadable sections will start at zero. |
692 | The zero is meaningless, so try to pick arbitrary addresses such | |
693 | that no loadable sections overlap. This algorithm is quadratic, | |
694 | but the number of sections in a single object file is generally | |
695 | small. */ | |
696 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
697 | { | |
698 | struct place_section_arg arg; | |
2711e456 DJ |
699 | bfd *abfd = objfile->obfd; |
700 | asection *cur_sec; | |
2711e456 DJ |
701 | |
702 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
703 | /* We do not expect this to happen; just skip this step if the | |
704 | relocatable file has a section with an assigned VMA. */ | |
705 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
706 | break; | |
707 | ||
708 | if (cur_sec == NULL) | |
709 | { | |
710 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
711 | ||
712 | /* Pick non-overlapping offsets for sections the user did not | |
713 | place explicitly. */ | |
714 | arg.offsets = objfile->section_offsets; | |
715 | arg.lowest = 0; | |
716 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
717 | ||
718 | /* Correctly filling in the section offsets is not quite | |
719 | enough. Relocatable files have two properties that | |
720 | (most) shared objects do not: | |
721 | ||
722 | - Their debug information will contain relocations. Some | |
723 | shared libraries do also, but many do not, so this can not | |
724 | be assumed. | |
725 | ||
726 | - If there are multiple code sections they will be loaded | |
727 | at different relative addresses in memory than they are | |
728 | in the objfile, since all sections in the file will start | |
729 | at address zero. | |
730 | ||
731 | Because GDB has very limited ability to map from an | |
732 | address in debug info to the correct code section, | |
733 | it relies on adding SECT_OFF_TEXT to things which might be | |
734 | code. If we clear all the section offsets, and set the | |
735 | section VMAs instead, then symfile_relocate_debug_section | |
736 | will return meaningful debug information pointing at the | |
737 | correct sections. | |
738 | ||
739 | GDB has too many different data structures for section | |
740 | addresses - a bfd, objfile, and so_list all have section | |
741 | tables, as does exec_ops. Some of these could probably | |
742 | be eliminated. */ | |
743 | ||
744 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
745 | cur_sec = cur_sec->next) | |
746 | { | |
747 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
748 | continue; | |
749 | ||
750 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
751 | exec_set_section_address (bfd_get_filename (abfd), |
752 | cur_sec->index, | |
30510692 | 753 | offsets[cur_sec->index]); |
2711e456 DJ |
754 | offsets[cur_sec->index] = 0; |
755 | } | |
756 | } | |
c1bd25fd DJ |
757 | } |
758 | ||
e8289572 | 759 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 760 | .rodata sections. */ |
e8289572 JB |
761 | init_objfile_sect_indices (objfile); |
762 | } | |
763 | ||
31d99776 DJ |
764 | /* Divide the file into segments, which are individual relocatable units. |
765 | This is the default version of the sym_fns.sym_segments function for | |
766 | symbol readers that do not have an explicit representation of segments. | |
767 | It assumes that object files do not have segments, and fully linked | |
768 | files have a single segment. */ | |
769 | ||
770 | struct symfile_segment_data * | |
771 | default_symfile_segments (bfd *abfd) | |
772 | { | |
773 | int num_sections, i; | |
774 | asection *sect; | |
775 | struct symfile_segment_data *data; | |
776 | CORE_ADDR low, high; | |
777 | ||
778 | /* Relocatable files contain enough information to position each | |
779 | loadable section independently; they should not be relocated | |
780 | in segments. */ | |
781 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
782 | return NULL; | |
783 | ||
784 | /* Make sure there is at least one loadable section in the file. */ | |
785 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
786 | { | |
787 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
788 | continue; | |
789 | ||
790 | break; | |
791 | } | |
792 | if (sect == NULL) | |
793 | return NULL; | |
794 | ||
795 | low = bfd_get_section_vma (abfd, sect); | |
796 | high = low + bfd_get_section_size (sect); | |
797 | ||
798 | data = XZALLOC (struct symfile_segment_data); | |
799 | data->num_segments = 1; | |
800 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
801 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
802 | ||
803 | num_sections = bfd_count_sections (abfd); | |
804 | data->segment_info = XCALLOC (num_sections, int); | |
805 | ||
806 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
807 | { | |
808 | CORE_ADDR vma; | |
809 | ||
810 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
811 | continue; | |
812 | ||
813 | vma = bfd_get_section_vma (abfd, sect); | |
814 | if (vma < low) | |
815 | low = vma; | |
816 | if (vma + bfd_get_section_size (sect) > high) | |
817 | high = vma + bfd_get_section_size (sect); | |
818 | ||
819 | data->segment_info[i] = 1; | |
820 | } | |
821 | ||
822 | data->segment_bases[0] = low; | |
823 | data->segment_sizes[0] = high - low; | |
824 | ||
825 | return data; | |
826 | } | |
827 | ||
608e2dbb TT |
828 | /* This is a convenience function to call sym_read for OBJFILE and |
829 | possibly force the partial symbols to be read. */ | |
830 | ||
831 | static void | |
832 | read_symbols (struct objfile *objfile, int add_flags) | |
833 | { | |
834 | (*objfile->sf->sym_read) (objfile, add_flags); | |
8a92335b JK |
835 | |
836 | /* find_separate_debug_file_in_section should be called only if there is | |
837 | single binary with no existing separate debug info file. */ | |
838 | if (!objfile_has_partial_symbols (objfile) | |
839 | && objfile->separate_debug_objfile == NULL | |
840 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb TT |
841 | { |
842 | bfd *abfd = find_separate_debug_file_in_section (objfile); | |
843 | struct cleanup *cleanup = make_cleanup_bfd_unref (abfd); | |
844 | ||
845 | if (abfd != NULL) | |
846 | symbol_file_add_separate (abfd, add_flags, objfile); | |
847 | ||
848 | do_cleanups (cleanup); | |
849 | } | |
850 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
851 | require_partial_symbols (objfile, 0); | |
852 | } | |
853 | ||
3d6e24f0 JB |
854 | /* Initialize entry point information for this objfile. */ |
855 | ||
856 | static void | |
857 | init_entry_point_info (struct objfile *objfile) | |
858 | { | |
859 | /* Save startup file's range of PC addresses to help blockframe.c | |
860 | decide where the bottom of the stack is. */ | |
861 | ||
862 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
863 | { | |
864 | /* Executable file -- record its entry point so we'll recognize | |
865 | the startup file because it contains the entry point. */ | |
866 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
867 | objfile->ei.entry_point_p = 1; | |
868 | } | |
869 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
870 | && bfd_get_start_address (objfile->obfd) != 0) | |
871 | { | |
872 | /* Some shared libraries may have entry points set and be | |
873 | runnable. There's no clear way to indicate this, so just check | |
874 | for values other than zero. */ | |
875 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
876 | objfile->ei.entry_point_p = 1; | |
877 | } | |
878 | else | |
879 | { | |
880 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
881 | objfile->ei.entry_point_p = 0; | |
882 | } | |
883 | ||
884 | if (objfile->ei.entry_point_p) | |
885 | { | |
886 | CORE_ADDR entry_point = objfile->ei.entry_point; | |
887 | ||
888 | /* Make certain that the address points at real code, and not a | |
889 | function descriptor. */ | |
890 | entry_point | |
891 | = gdbarch_convert_from_func_ptr_addr (objfile->gdbarch, | |
892 | entry_point, | |
893 | ¤t_target); | |
894 | ||
895 | /* Remove any ISA markers, so that this matches entries in the | |
896 | symbol table. */ | |
897 | objfile->ei.entry_point | |
898 | = gdbarch_addr_bits_remove (objfile->gdbarch, entry_point); | |
899 | } | |
900 | } | |
901 | ||
c906108c SS |
902 | /* Process a symbol file, as either the main file or as a dynamically |
903 | loaded file. | |
904 | ||
36e4d068 JB |
905 | This function does not set the OBJFILE's entry-point info. |
906 | ||
96baa820 JM |
907 | OBJFILE is where the symbols are to be read from. |
908 | ||
7e8580c1 JB |
909 | ADDRS is the list of section load addresses. If the user has given |
910 | an 'add-symbol-file' command, then this is the list of offsets and | |
911 | addresses he or she provided as arguments to the command; or, if | |
912 | we're handling a shared library, these are the actual addresses the | |
913 | sections are loaded at, according to the inferior's dynamic linker | |
914 | (as gleaned by GDB's shared library code). We convert each address | |
915 | into an offset from the section VMA's as it appears in the object | |
916 | file, and then call the file's sym_offsets function to convert this | |
917 | into a format-specific offset table --- a `struct section_offsets'. | |
96baa820 | 918 | |
7eedccfa PP |
919 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
920 | an extra symbol file such as dynamically loaded code, and wether | |
921 | breakpoint reset should be deferred. */ | |
c906108c | 922 | |
36e4d068 JB |
923 | static void |
924 | syms_from_objfile_1 (struct objfile *objfile, | |
925 | struct section_addr_info *addrs, | |
36e4d068 | 926 | int add_flags) |
c906108c | 927 | { |
a39a16c4 | 928 | struct section_addr_info *local_addr = NULL; |
c906108c | 929 | struct cleanup *old_chain; |
7eedccfa | 930 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 931 | |
31d99776 | 932 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 933 | |
75245b24 | 934 | if (objfile->sf == NULL) |
36e4d068 JB |
935 | { |
936 | /* No symbols to load, but we still need to make sure | |
937 | that the section_offsets table is allocated. */ | |
d445b2f6 | 938 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 939 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
940 | |
941 | objfile->num_sections = num_sections; | |
942 | objfile->section_offsets | |
943 | = obstack_alloc (&objfile->objfile_obstack, size); | |
944 | memset (objfile->section_offsets, 0, size); | |
945 | return; | |
946 | } | |
75245b24 | 947 | |
c906108c SS |
948 | /* Make sure that partially constructed symbol tables will be cleaned up |
949 | if an error occurs during symbol reading. */ | |
74b7792f | 950 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 951 | |
6bf667bb DE |
952 | /* If ADDRS is NULL, put together a dummy address list. |
953 | We now establish the convention that an addr of zero means | |
c378eb4e | 954 | no load address was specified. */ |
6bf667bb | 955 | if (! addrs) |
a39a16c4 | 956 | { |
d445b2f6 | 957 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
958 | make_cleanup (xfree, local_addr); |
959 | addrs = local_addr; | |
960 | } | |
961 | ||
c5aa993b | 962 | if (mainline) |
c906108c SS |
963 | { |
964 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 965 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 966 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
967 | |
968 | /* Since no error yet, throw away the old symbol table. */ | |
969 | ||
970 | if (symfile_objfile != NULL) | |
971 | { | |
972 | free_objfile (symfile_objfile); | |
adb7f338 | 973 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
974 | } |
975 | ||
976 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
977 | If the user wants to get rid of them, they should do "symbol-file" |
978 | without arguments first. Not sure this is the best behavior | |
979 | (PR 2207). */ | |
c906108c | 980 | |
c5aa993b | 981 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
982 | } |
983 | ||
984 | /* Convert addr into an offset rather than an absolute address. | |
985 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 986 | and assume that <addr> is where that got loaded. |
c906108c | 987 | |
53a5351d JM |
988 | We no longer warn if the lowest section is not a text segment (as |
989 | happens for the PA64 port. */ | |
6bf667bb | 990 | if (addrs->num_sections > 0) |
75242ef4 | 991 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
992 | |
993 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
994 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 995 | initial symbol reading for this file. */ |
c906108c | 996 | |
c5aa993b | 997 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 998 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 999 | |
6bf667bb | 1000 | (*objfile->sf->sym_offsets) (objfile, addrs); |
c906108c | 1001 | |
608e2dbb | 1002 | read_symbols (objfile, add_flags); |
b11896a5 | 1003 | |
c906108c SS |
1004 | /* Discard cleanups as symbol reading was successful. */ |
1005 | ||
1006 | discard_cleanups (old_chain); | |
f7545552 | 1007 | xfree (local_addr); |
c906108c SS |
1008 | } |
1009 | ||
36e4d068 JB |
1010 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1011 | entry-point info. */ | |
1012 | ||
6bf667bb | 1013 | static void |
36e4d068 JB |
1014 | syms_from_objfile (struct objfile *objfile, |
1015 | struct section_addr_info *addrs, | |
36e4d068 JB |
1016 | int add_flags) |
1017 | { | |
6bf667bb | 1018 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1019 | init_entry_point_info (objfile); |
1020 | } | |
1021 | ||
c906108c SS |
1022 | /* Perform required actions after either reading in the initial |
1023 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1024 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1025 | |
c906108c | 1026 | void |
7eedccfa | 1027 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1028 | { |
c906108c | 1029 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1030 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1031 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1032 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1033 | { |
1034 | /* OK, make it the "real" symbol file. */ | |
1035 | symfile_objfile = objfile; | |
1036 | ||
c1e56572 | 1037 | clear_symtab_users (add_flags); |
c906108c | 1038 | } |
7eedccfa | 1039 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1040 | { |
69de3c6a | 1041 | breakpoint_re_set (); |
c906108c SS |
1042 | } |
1043 | ||
1044 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1045 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1046 | } |
1047 | ||
1048 | /* Process a symbol file, as either the main file or as a dynamically | |
1049 | loaded file. | |
1050 | ||
5417f6dc | 1051 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1052 | A new reference is acquired by this function. |
7904e09f | 1053 | |
7eedccfa PP |
1054 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1055 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1056 | |
6bf667bb | 1057 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1058 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1059 | |
63524580 JK |
1060 | PARENT is the original objfile if ABFD is a separate debug info file. |
1061 | Otherwise PARENT is NULL. | |
1062 | ||
c906108c | 1063 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1064 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1065 | |
7904e09f | 1066 | static struct objfile * |
6bf667bb DE |
1067 | symbol_file_add_with_addrs (bfd *abfd, int add_flags, |
1068 | struct section_addr_info *addrs, | |
1069 | int flags, struct objfile *parent) | |
c906108c SS |
1070 | { |
1071 | struct objfile *objfile; | |
5417f6dc | 1072 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1073 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1074 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1075 | const int should_print = ((from_tty || info_verbose) |
1076 | && (readnow_symbol_files | |
1077 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1078 | |
9291a0cd | 1079 | if (readnow_symbol_files) |
b11896a5 TT |
1080 | { |
1081 | flags |= OBJF_READNOW; | |
1082 | add_flags &= ~SYMFILE_NO_READ; | |
1083 | } | |
9291a0cd | 1084 | |
5417f6dc RM |
1085 | /* Give user a chance to burp if we'd be |
1086 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1087 | |
1088 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1089 | && mainline |
c906108c | 1090 | && from_tty |
9e2f0ad4 | 1091 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1092 | error (_("Not confirmed.")); |
c906108c | 1093 | |
0838fb57 | 1094 | objfile = allocate_objfile (abfd, flags | (mainline ? OBJF_MAINLINE : 0)); |
c906108c | 1095 | |
63524580 JK |
1096 | if (parent) |
1097 | add_separate_debug_objfile (objfile, parent); | |
1098 | ||
78a4a9b9 AC |
1099 | /* We either created a new mapped symbol table, mapped an existing |
1100 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1101 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1102 | if (should_print) |
c906108c | 1103 | { |
769d7dc4 AC |
1104 | if (deprecated_pre_add_symbol_hook) |
1105 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1106 | else |
c906108c | 1107 | { |
55333a84 DE |
1108 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1109 | wrap_here (""); | |
1110 | gdb_flush (gdb_stdout); | |
c906108c | 1111 | } |
c906108c | 1112 | } |
6bf667bb | 1113 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1114 | |
1115 | /* We now have at least a partial symbol table. Check to see if the | |
1116 | user requested that all symbols be read on initial access via either | |
1117 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1118 | all partial symbol tables for this objfile if so. */ |
c906108c | 1119 | |
9291a0cd | 1120 | if ((flags & OBJF_READNOW)) |
c906108c | 1121 | { |
b11896a5 | 1122 | if (should_print) |
c906108c | 1123 | { |
a3f17187 | 1124 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1125 | wrap_here (""); |
1126 | gdb_flush (gdb_stdout); | |
1127 | } | |
1128 | ||
ccefe4c4 TT |
1129 | if (objfile->sf) |
1130 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1131 | } |
1132 | ||
b11896a5 | 1133 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1134 | { |
1135 | wrap_here (""); | |
55333a84 | 1136 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1137 | wrap_here (""); |
1138 | } | |
1139 | ||
b11896a5 | 1140 | if (should_print) |
c906108c | 1141 | { |
769d7dc4 AC |
1142 | if (deprecated_post_add_symbol_hook) |
1143 | deprecated_post_add_symbol_hook (); | |
c906108c | 1144 | else |
55333a84 | 1145 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1146 | } |
1147 | ||
481d0f41 JB |
1148 | /* We print some messages regardless of whether 'from_tty || |
1149 | info_verbose' is true, so make sure they go out at the right | |
1150 | time. */ | |
1151 | gdb_flush (gdb_stdout); | |
1152 | ||
109f874e | 1153 | if (objfile->sf == NULL) |
8caee43b PP |
1154 | { |
1155 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1156 | return objfile; /* No symbols. */ |
8caee43b | 1157 | } |
109f874e | 1158 | |
7eedccfa | 1159 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1160 | |
06d3b283 | 1161 | observer_notify_new_objfile (objfile); |
c906108c | 1162 | |
ce7d4522 | 1163 | bfd_cache_close_all (); |
c906108c SS |
1164 | return (objfile); |
1165 | } | |
1166 | ||
9cce227f TG |
1167 | /* Add BFD as a separate debug file for OBJFILE. */ |
1168 | ||
1169 | void | |
1170 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1171 | { | |
15d123c9 | 1172 | struct objfile *new_objfile; |
089b4803 TG |
1173 | struct section_addr_info *sap; |
1174 | struct cleanup *my_cleanup; | |
1175 | ||
1176 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1177 | because sections of BFD may not match sections of OBJFILE and because | |
1178 | vma may have been modified by tools such as prelink. */ | |
1179 | sap = build_section_addr_info_from_objfile (objfile); | |
1180 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1181 | |
6bf667bb DE |
1182 | new_objfile = symbol_file_add_with_addrs |
1183 | (bfd, symfile_flags, sap, | |
9cce227f | 1184 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1185 | | OBJF_USERLOADED), |
1186 | objfile); | |
089b4803 TG |
1187 | |
1188 | do_cleanups (my_cleanup); | |
9cce227f | 1189 | } |
7904e09f | 1190 | |
eb4556d7 JB |
1191 | /* Process the symbol file ABFD, as either the main file or as a |
1192 | dynamically loaded file. | |
6bf667bb | 1193 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1194 | |
eb4556d7 | 1195 | struct objfile * |
7eedccfa | 1196 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1197 | struct section_addr_info *addrs, |
63524580 | 1198 | int flags, struct objfile *parent) |
eb4556d7 | 1199 | { |
6bf667bb | 1200 | return symbol_file_add_with_addrs (abfd, add_flags, addrs, flags, parent); |
eb4556d7 JB |
1201 | } |
1202 | ||
7904e09f | 1203 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1204 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1205 | |
7904e09f | 1206 | struct objfile * |
7eedccfa PP |
1207 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1208 | int flags) | |
7904e09f | 1209 | { |
8ac244b4 TT |
1210 | bfd *bfd = symfile_bfd_open (name); |
1211 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1212 | struct objfile *objf; | |
1213 | ||
882f447f | 1214 | objf = symbol_file_add_from_bfd (bfd, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1215 | do_cleanups (cleanup); |
1216 | return objf; | |
7904e09f JB |
1217 | } |
1218 | ||
d7db6da9 FN |
1219 | /* Call symbol_file_add() with default values and update whatever is |
1220 | affected by the loading of a new main(). | |
1221 | Used when the file is supplied in the gdb command line | |
1222 | and by some targets with special loading requirements. | |
1223 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1224 | argument for the switches that can only be specified in the symbol_file | |
1225 | command itself. */ | |
5417f6dc | 1226 | |
1adeb98a FN |
1227 | void |
1228 | symbol_file_add_main (char *args, int from_tty) | |
1229 | { | |
d7db6da9 FN |
1230 | symbol_file_add_main_1 (args, from_tty, 0); |
1231 | } | |
1232 | ||
1233 | static void | |
1234 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1235 | { | |
7dcd53a0 TT |
1236 | const int add_flags = (current_inferior ()->symfile_flags |
1237 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1238 | ||
7eedccfa | 1239 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1240 | |
d7db6da9 FN |
1241 | /* Getting new symbols may change our opinion about |
1242 | what is frameless. */ | |
1243 | reinit_frame_cache (); | |
1244 | ||
7dcd53a0 TT |
1245 | if ((flags & SYMFILE_NO_READ) == 0) |
1246 | set_initial_language (); | |
1adeb98a FN |
1247 | } |
1248 | ||
1249 | void | |
1250 | symbol_file_clear (int from_tty) | |
1251 | { | |
1252 | if ((have_full_symbols () || have_partial_symbols ()) | |
1253 | && from_tty | |
0430b0d6 AS |
1254 | && (symfile_objfile |
1255 | ? !query (_("Discard symbol table from `%s'? "), | |
1256 | symfile_objfile->name) | |
1257 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1258 | error (_("Not confirmed.")); |
1adeb98a | 1259 | |
0133421a JK |
1260 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1261 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1262 | no_shared_libraries (NULL, from_tty); |
1263 | ||
0133421a JK |
1264 | free_all_objfiles (); |
1265 | ||
adb7f338 | 1266 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1267 | if (from_tty) |
1268 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1269 | } |
1270 | ||
5b5d99cf | 1271 | static int |
287ccc17 | 1272 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1273 | struct objfile *parent_objfile) |
5b5d99cf | 1274 | { |
904578ed JK |
1275 | unsigned long file_crc; |
1276 | int file_crc_p; | |
f1838a98 | 1277 | bfd *abfd; |
32a0e547 | 1278 | struct stat parent_stat, abfd_stat; |
904578ed | 1279 | int verified_as_different; |
32a0e547 JK |
1280 | |
1281 | /* Find a separate debug info file as if symbols would be present in | |
1282 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1283 | section can contain just the basename of PARENT_OBJFILE without any | |
1284 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1285 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1286 | |
0ba1096a | 1287 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1288 | return 0; |
5b5d99cf | 1289 | |
08d2cd74 | 1290 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1291 | |
1292 | if (!abfd) | |
5b5d99cf JB |
1293 | return 0; |
1294 | ||
0ba1096a | 1295 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1296 | |
1297 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1298 | st_ino; they always set it to zero. (Windows does provide a | |
1299 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1300 | case. While there is no guarantee that a system that provides | |
1301 | meaningful inode numbers will never set st_ino to zero, this is | |
1302 | merely an optimization, so we do not need to worry about false | |
1303 | negatives. */ | |
1304 | ||
1305 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1306 | && abfd_stat.st_ino != 0 |
1307 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1308 | { |
904578ed JK |
1309 | if (abfd_stat.st_dev == parent_stat.st_dev |
1310 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1311 | { | |
cbb099e8 | 1312 | gdb_bfd_unref (abfd); |
904578ed JK |
1313 | return 0; |
1314 | } | |
1315 | verified_as_different = 1; | |
32a0e547 | 1316 | } |
904578ed JK |
1317 | else |
1318 | verified_as_different = 0; | |
32a0e547 | 1319 | |
dccee2de | 1320 | file_crc_p = gdb_bfd_crc (abfd, &file_crc); |
5b5d99cf | 1321 | |
cbb099e8 | 1322 | gdb_bfd_unref (abfd); |
5b5d99cf | 1323 | |
904578ed JK |
1324 | if (!file_crc_p) |
1325 | return 0; | |
1326 | ||
287ccc17 JK |
1327 | if (crc != file_crc) |
1328 | { | |
dccee2de TT |
1329 | unsigned long parent_crc; |
1330 | ||
904578ed JK |
1331 | /* If one (or both) the files are accessed for example the via "remote:" |
1332 | gdbserver way it does not support the bfd_stat operation. Verify | |
1333 | whether those two files are not the same manually. */ | |
1334 | ||
dccee2de | 1335 | if (!verified_as_different) |
904578ed | 1336 | { |
dccee2de | 1337 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1338 | return 0; |
1339 | } | |
1340 | ||
dccee2de | 1341 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1342 | warning (_("the debug information found in \"%s\"" |
1343 | " does not match \"%s\" (CRC mismatch).\n"), | |
1344 | name, parent_objfile->name); | |
1345 | ||
287ccc17 JK |
1346 | return 0; |
1347 | } | |
1348 | ||
1349 | return 1; | |
5b5d99cf JB |
1350 | } |
1351 | ||
aa28a74e | 1352 | char *debug_file_directory = NULL; |
920d2a44 AC |
1353 | static void |
1354 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1355 | struct cmd_list_element *c, const char *value) | |
1356 | { | |
3e43a32a MS |
1357 | fprintf_filtered (file, |
1358 | _("The directory where separate debug " | |
1359 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1360 | value); |
1361 | } | |
5b5d99cf JB |
1362 | |
1363 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1364 | #define DEBUG_SUBDIRECTORY ".debug" | |
1365 | #endif | |
1366 | ||
1db33378 PP |
1367 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1368 | where the original file resides (may not be the same as | |
1369 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1370 | looking for. CANON_DIR is the "realpath" form of DIR. |
1371 | DIR must contain a trailing '/'. | |
1372 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1373 | |
1374 | static char * | |
1375 | find_separate_debug_file (const char *dir, | |
1376 | const char *canon_dir, | |
1377 | const char *debuglink, | |
1378 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1379 | { |
1db33378 PP |
1380 | char *debugdir; |
1381 | char *debugfile; | |
9cce227f | 1382 | int i; |
e4ab2fad JK |
1383 | VEC (char_ptr) *debugdir_vec; |
1384 | struct cleanup *back_to; | |
1385 | int ix; | |
5b5d99cf | 1386 | |
1db33378 | 1387 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1388 | i = strlen (dir); |
1db33378 PP |
1389 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1390 | i = strlen (canon_dir); | |
1ffa32ee | 1391 | |
25522fae JK |
1392 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1393 | + i | |
1394 | + strlen (DEBUG_SUBDIRECTORY) | |
1395 | + strlen ("/") | |
1db33378 | 1396 | + strlen (debuglink) |
25522fae | 1397 | + 1); |
5b5d99cf JB |
1398 | |
1399 | /* First try in the same directory as the original file. */ | |
1400 | strcpy (debugfile, dir); | |
1db33378 | 1401 | strcat (debugfile, debuglink); |
5b5d99cf | 1402 | |
32a0e547 | 1403 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1404 | return debugfile; |
5417f6dc | 1405 | |
5b5d99cf JB |
1406 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1407 | strcpy (debugfile, dir); | |
1408 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1409 | strcat (debugfile, "/"); | |
1db33378 | 1410 | strcat (debugfile, debuglink); |
5b5d99cf | 1411 | |
32a0e547 | 1412 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1413 | return debugfile; |
5417f6dc | 1414 | |
24ddea62 | 1415 | /* Then try in the global debugfile directories. |
f888f159 | 1416 | |
24ddea62 JK |
1417 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1418 | cause "/..." lookups. */ | |
5417f6dc | 1419 | |
e4ab2fad JK |
1420 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1421 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1422 | |
e4ab2fad JK |
1423 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1424 | { | |
1425 | strcpy (debugfile, debugdir); | |
aa28a74e | 1426 | strcat (debugfile, "/"); |
24ddea62 | 1427 | strcat (debugfile, dir); |
1db33378 | 1428 | strcat (debugfile, debuglink); |
aa28a74e | 1429 | |
32a0e547 | 1430 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1431 | return debugfile; |
24ddea62 JK |
1432 | |
1433 | /* If the file is in the sysroot, try using its base path in the | |
1434 | global debugfile directory. */ | |
1db33378 PP |
1435 | if (canon_dir != NULL |
1436 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1437 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1438 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1439 | { |
e4ab2fad | 1440 | strcpy (debugfile, debugdir); |
1db33378 | 1441 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1442 | strcat (debugfile, "/"); |
1db33378 | 1443 | strcat (debugfile, debuglink); |
24ddea62 | 1444 | |
32a0e547 | 1445 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1446 | return debugfile; |
24ddea62 | 1447 | } |
aa28a74e | 1448 | } |
f888f159 | 1449 | |
e4ab2fad | 1450 | do_cleanups (back_to); |
25522fae | 1451 | xfree (debugfile); |
1db33378 PP |
1452 | return NULL; |
1453 | } | |
1454 | ||
7edbb660 | 1455 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1456 | If there were no directory separators in PATH, PATH will be empty |
1457 | string on return. */ | |
1458 | ||
1459 | static void | |
1460 | terminate_after_last_dir_separator (char *path) | |
1461 | { | |
1462 | int i; | |
1463 | ||
1464 | /* Strip off the final filename part, leaving the directory name, | |
1465 | followed by a slash. The directory can be relative or absolute. */ | |
1466 | for (i = strlen(path) - 1; i >= 0; i--) | |
1467 | if (IS_DIR_SEPARATOR (path[i])) | |
1468 | break; | |
1469 | ||
1470 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1471 | path[i + 1] = '\0'; | |
1472 | } | |
1473 | ||
1474 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1475 | Returns pathname, or NULL. */ | |
1476 | ||
1477 | char * | |
1478 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1479 | { | |
1480 | char *debuglink; | |
1481 | char *dir, *canon_dir; | |
1482 | char *debugfile; | |
1483 | unsigned long crc32; | |
1484 | struct cleanup *cleanups; | |
1485 | ||
cc0ea93c | 1486 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1487 | |
1488 | if (debuglink == NULL) | |
1489 | { | |
1490 | /* There's no separate debug info, hence there's no way we could | |
1491 | load it => no warning. */ | |
1492 | return NULL; | |
1493 | } | |
1494 | ||
71bdabee | 1495 | cleanups = make_cleanup (xfree, debuglink); |
1db33378 | 1496 | dir = xstrdup (objfile->name); |
71bdabee | 1497 | make_cleanup (xfree, dir); |
1db33378 PP |
1498 | terminate_after_last_dir_separator (dir); |
1499 | canon_dir = lrealpath (dir); | |
1500 | ||
1501 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1502 | crc32, objfile); | |
1503 | xfree (canon_dir); | |
1504 | ||
1505 | if (debugfile == NULL) | |
1506 | { | |
1507 | #ifdef HAVE_LSTAT | |
1508 | /* For PR gdb/9538, try again with realpath (if different from the | |
1509 | original). */ | |
1510 | ||
1511 | struct stat st_buf; | |
1512 | ||
1513 | if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode)) | |
1514 | { | |
1515 | char *symlink_dir; | |
1516 | ||
1517 | symlink_dir = lrealpath (objfile->name); | |
1518 | if (symlink_dir != NULL) | |
1519 | { | |
1520 | make_cleanup (xfree, symlink_dir); | |
1521 | terminate_after_last_dir_separator (symlink_dir); | |
1522 | if (strcmp (dir, symlink_dir) != 0) | |
1523 | { | |
1524 | /* Different directory, so try using it. */ | |
1525 | debugfile = find_separate_debug_file (symlink_dir, | |
1526 | symlink_dir, | |
1527 | debuglink, | |
1528 | crc32, | |
1529 | objfile); | |
1530 | } | |
1531 | } | |
1532 | } | |
1533 | #endif /* HAVE_LSTAT */ | |
1534 | } | |
aa28a74e | 1535 | |
1db33378 | 1536 | do_cleanups (cleanups); |
25522fae | 1537 | return debugfile; |
5b5d99cf JB |
1538 | } |
1539 | ||
c906108c SS |
1540 | /* This is the symbol-file command. Read the file, analyze its |
1541 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1542 | the command is rather bizarre: |
1543 | ||
1544 | 1. The function buildargv implements various quoting conventions | |
1545 | which are undocumented and have little or nothing in common with | |
1546 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1547 | ||
1548 | 2. Options are used, which are not generally used in GDB (perhaps | |
1549 | "set mapped on", "set readnow on" would be better) | |
1550 | ||
1551 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1552 | conventions (because it is confusing and inconvenient). */ |
1553 | ||
1554 | void | |
fba45db2 | 1555 | symbol_file_command (char *args, int from_tty) |
c906108c | 1556 | { |
c906108c SS |
1557 | dont_repeat (); |
1558 | ||
1559 | if (args == NULL) | |
1560 | { | |
1adeb98a | 1561 | symbol_file_clear (from_tty); |
c906108c SS |
1562 | } |
1563 | else | |
1564 | { | |
d1a41061 | 1565 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1566 | int flags = OBJF_USERLOADED; |
1567 | struct cleanup *cleanups; | |
1568 | char *name = NULL; | |
1569 | ||
7a292a7a | 1570 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1571 | while (*argv != NULL) |
1572 | { | |
78a4a9b9 AC |
1573 | if (strcmp (*argv, "-readnow") == 0) |
1574 | flags |= OBJF_READNOW; | |
1575 | else if (**argv == '-') | |
8a3fe4f8 | 1576 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1577 | else |
1578 | { | |
cb2f3a29 | 1579 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1580 | name = *argv; |
78a4a9b9 | 1581 | } |
cb2f3a29 | 1582 | |
c906108c SS |
1583 | argv++; |
1584 | } | |
1585 | ||
1586 | if (name == NULL) | |
cb2f3a29 MK |
1587 | error (_("no symbol file name was specified")); |
1588 | ||
c906108c SS |
1589 | do_cleanups (cleanups); |
1590 | } | |
1591 | } | |
1592 | ||
1593 | /* Set the initial language. | |
1594 | ||
cb2f3a29 MK |
1595 | FIXME: A better solution would be to record the language in the |
1596 | psymtab when reading partial symbols, and then use it (if known) to | |
1597 | set the language. This would be a win for formats that encode the | |
1598 | language in an easily discoverable place, such as DWARF. For | |
1599 | stabs, we can jump through hoops looking for specially named | |
1600 | symbols or try to intuit the language from the specific type of | |
1601 | stabs we find, but we can't do that until later when we read in | |
1602 | full symbols. */ | |
c906108c | 1603 | |
8b60591b | 1604 | void |
fba45db2 | 1605 | set_initial_language (void) |
c906108c | 1606 | { |
c5aa993b | 1607 | enum language lang = language_unknown; |
c906108c | 1608 | |
01f8c46d JK |
1609 | if (language_of_main != language_unknown) |
1610 | lang = language_of_main; | |
1611 | else | |
1612 | { | |
1613 | const char *filename; | |
f888f159 | 1614 | |
01f8c46d JK |
1615 | filename = find_main_filename (); |
1616 | if (filename != NULL) | |
1617 | lang = deduce_language_from_filename (filename); | |
1618 | } | |
cb2f3a29 | 1619 | |
ccefe4c4 TT |
1620 | if (lang == language_unknown) |
1621 | { | |
1622 | /* Make C the default language */ | |
1623 | lang = language_c; | |
c906108c | 1624 | } |
ccefe4c4 TT |
1625 | |
1626 | set_language (lang); | |
1627 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1628 | } |
1629 | ||
874f5765 | 1630 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1631 | open it normally. Returns a new reference to the BFD. On error, |
1632 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1633 | |
1634 | bfd * | |
08d2cd74 | 1635 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1636 | { |
520b0001 TT |
1637 | bfd *result; |
1638 | ||
874f5765 | 1639 | if (remote_filename_p (name)) |
520b0001 | 1640 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1641 | else |
1c00ec6b | 1642 | result = gdb_bfd_open (name, gnutarget, -1); |
520b0001 | 1643 | |
520b0001 | 1644 | return result; |
874f5765 TG |
1645 | } |
1646 | ||
cb2f3a29 MK |
1647 | /* Open the file specified by NAME and hand it off to BFD for |
1648 | preliminary analysis. Return a newly initialized bfd *, which | |
1649 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1650 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1651 | |
1652 | bfd * | |
fba45db2 | 1653 | symfile_bfd_open (char *name) |
c906108c SS |
1654 | { |
1655 | bfd *sym_bfd; | |
1656 | int desc; | |
1657 | char *absolute_name; | |
faab9922 | 1658 | struct cleanup *back_to; |
c906108c | 1659 | |
f1838a98 UW |
1660 | if (remote_filename_p (name)) |
1661 | { | |
520b0001 | 1662 | sym_bfd = remote_bfd_open (name, gnutarget); |
f1838a98 | 1663 | if (!sym_bfd) |
a4453b7e TT |
1664 | error (_("`%s': can't open to read symbols: %s."), name, |
1665 | bfd_errmsg (bfd_get_error ())); | |
f1838a98 UW |
1666 | |
1667 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1668 | { | |
f9a062ff | 1669 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 UW |
1670 | error (_("`%s': can't read symbols: %s."), name, |
1671 | bfd_errmsg (bfd_get_error ())); | |
1672 | } | |
1673 | ||
1674 | return sym_bfd; | |
1675 | } | |
1676 | ||
cb2f3a29 | 1677 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1678 | |
1679 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1680 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1681 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1682 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1683 | if (desc < 0) |
1684 | { | |
1685 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1686 | |
c906108c | 1687 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1688 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1689 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1690 | } |
1691 | #endif | |
1692 | if (desc < 0) | |
1693 | { | |
b8c9b27d | 1694 | make_cleanup (xfree, name); |
c906108c SS |
1695 | perror_with_name (name); |
1696 | } | |
cb2f3a29 | 1697 | |
cb2f3a29 MK |
1698 | xfree (name); |
1699 | name = absolute_name; | |
faab9922 | 1700 | back_to = make_cleanup (xfree, name); |
c906108c | 1701 | |
1c00ec6b | 1702 | sym_bfd = gdb_bfd_open (name, gnutarget, desc); |
c906108c | 1703 | if (!sym_bfd) |
faab9922 JK |
1704 | error (_("`%s': can't open to read symbols: %s."), name, |
1705 | bfd_errmsg (bfd_get_error ())); | |
549c1eea | 1706 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1707 | |
1708 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1709 | { | |
f9a062ff | 1710 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1711 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1712 | bfd_errmsg (bfd_get_error ())); |
1713 | } | |
cb2f3a29 | 1714 | |
faab9922 JK |
1715 | do_cleanups (back_to); |
1716 | ||
cb2f3a29 | 1717 | return sym_bfd; |
c906108c SS |
1718 | } |
1719 | ||
cb2f3a29 MK |
1720 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1721 | the section was not found. */ | |
1722 | ||
0e931cf0 JB |
1723 | int |
1724 | get_section_index (struct objfile *objfile, char *section_name) | |
1725 | { | |
1726 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1727 | |
0e931cf0 JB |
1728 | if (sect) |
1729 | return sect->index; | |
1730 | else | |
1731 | return -1; | |
1732 | } | |
1733 | ||
cb2f3a29 MK |
1734 | /* Link SF into the global symtab_fns list. Called on startup by the |
1735 | _initialize routine in each object file format reader, to register | |
b021a221 | 1736 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1737 | |
1738 | void | |
00b5771c | 1739 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1740 | { |
00b5771c | 1741 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1742 | } |
1743 | ||
cb2f3a29 MK |
1744 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1745 | either returns or calls error(). The result is an initialized | |
1746 | struct sym_fns in the objfile structure, that contains cached | |
1747 | information about the symbol file. */ | |
c906108c | 1748 | |
00b5771c | 1749 | static const struct sym_fns * |
31d99776 | 1750 | find_sym_fns (bfd *abfd) |
c906108c | 1751 | { |
00b5771c | 1752 | const struct sym_fns *sf; |
31d99776 | 1753 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1754 | int i; |
c906108c | 1755 | |
75245b24 MS |
1756 | if (our_flavour == bfd_target_srec_flavour |
1757 | || our_flavour == bfd_target_ihex_flavour | |
1758 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1759 | return NULL; /* No symbols. */ |
75245b24 | 1760 | |
00b5771c | 1761 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1762 | if (our_flavour == sf->sym_flavour) |
1763 | return sf; | |
cb2f3a29 | 1764 | |
8a3fe4f8 | 1765 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1766 | bfd_get_target (abfd)); |
c906108c SS |
1767 | } |
1768 | \f | |
cb2f3a29 | 1769 | |
c906108c SS |
1770 | /* This function runs the load command of our current target. */ |
1771 | ||
1772 | static void | |
fba45db2 | 1773 | load_command (char *arg, int from_tty) |
c906108c | 1774 | { |
5b3fca71 TT |
1775 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1776 | ||
e5cc9f32 JB |
1777 | dont_repeat (); |
1778 | ||
4487aabf PA |
1779 | /* The user might be reloading because the binary has changed. Take |
1780 | this opportunity to check. */ | |
1781 | reopen_exec_file (); | |
1782 | reread_symbols (); | |
1783 | ||
c906108c | 1784 | if (arg == NULL) |
1986bccd AS |
1785 | { |
1786 | char *parg; | |
1787 | int count = 0; | |
1788 | ||
1789 | parg = arg = get_exec_file (1); | |
1790 | ||
1791 | /* Count how many \ " ' tab space there are in the name. */ | |
1792 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1793 | { | |
1794 | parg++; | |
1795 | count++; | |
1796 | } | |
1797 | ||
1798 | if (count) | |
1799 | { | |
1800 | /* We need to quote this string so buildargv can pull it apart. */ | |
1801 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1802 | char *ptemp = temp; | |
1803 | char *prev; | |
1804 | ||
1805 | make_cleanup (xfree, temp); | |
1806 | ||
1807 | prev = parg = arg; | |
1808 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1809 | { | |
1810 | strncpy (ptemp, prev, parg - prev); | |
1811 | ptemp += parg - prev; | |
1812 | prev = parg++; | |
1813 | *ptemp++ = '\\'; | |
1814 | } | |
1815 | strcpy (ptemp, prev); | |
1816 | ||
1817 | arg = temp; | |
1818 | } | |
1819 | } | |
1820 | ||
c906108c | 1821 | target_load (arg, from_tty); |
2889e661 JB |
1822 | |
1823 | /* After re-loading the executable, we don't really know which | |
1824 | overlays are mapped any more. */ | |
1825 | overlay_cache_invalid = 1; | |
5b3fca71 TT |
1826 | |
1827 | do_cleanups (cleanup); | |
c906108c SS |
1828 | } |
1829 | ||
1830 | /* This version of "load" should be usable for any target. Currently | |
1831 | it is just used for remote targets, not inftarg.c or core files, | |
1832 | on the theory that only in that case is it useful. | |
1833 | ||
1834 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1835 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1836 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1837 | performance compares. */ | |
917317f4 | 1838 | |
917317f4 JM |
1839 | static int validate_download = 0; |
1840 | ||
e4f9b4d5 MS |
1841 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1842 | ||
1843 | static void | |
1844 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1845 | { | |
1846 | bfd_size_type *sum = data; | |
1847 | ||
2c500098 | 1848 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1849 | } |
1850 | ||
1851 | /* Opaque data for load_section_callback. */ | |
1852 | struct load_section_data { | |
f698ca8e | 1853 | CORE_ADDR load_offset; |
a76d924d DJ |
1854 | struct load_progress_data *progress_data; |
1855 | VEC(memory_write_request_s) *requests; | |
1856 | }; | |
1857 | ||
1858 | /* Opaque data for load_progress. */ | |
1859 | struct load_progress_data { | |
1860 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1861 | unsigned long write_count; |
1862 | unsigned long data_count; | |
1863 | bfd_size_type total_size; | |
a76d924d DJ |
1864 | }; |
1865 | ||
1866 | /* Opaque data for load_progress for a single section. */ | |
1867 | struct load_progress_section_data { | |
1868 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1869 | |
a76d924d | 1870 | /* Per-section data. */ |
cf7a04e8 DJ |
1871 | const char *section_name; |
1872 | ULONGEST section_sent; | |
1873 | ULONGEST section_size; | |
1874 | CORE_ADDR lma; | |
1875 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1876 | }; |
1877 | ||
a76d924d | 1878 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1879 | |
1880 | static void | |
1881 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1882 | { | |
a76d924d DJ |
1883 | struct load_progress_section_data *args = untyped_arg; |
1884 | struct load_progress_data *totals; | |
1885 | ||
1886 | if (args == NULL) | |
1887 | /* Writing padding data. No easy way to get at the cumulative | |
1888 | stats, so just ignore this. */ | |
1889 | return; | |
1890 | ||
1891 | totals = args->cumulative; | |
1892 | ||
1893 | if (bytes == 0 && args->section_sent == 0) | |
1894 | { | |
1895 | /* The write is just starting. Let the user know we've started | |
1896 | this section. */ | |
79a45e25 | 1897 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 | 1898 | args->section_name, hex_string (args->section_size), |
f5656ead | 1899 | paddress (target_gdbarch (), args->lma)); |
a76d924d DJ |
1900 | return; |
1901 | } | |
cf7a04e8 DJ |
1902 | |
1903 | if (validate_download) | |
1904 | { | |
1905 | /* Broken memories and broken monitors manifest themselves here | |
1906 | when bring new computers to life. This doubles already slow | |
1907 | downloads. */ | |
1908 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1909 | might add a verify_memory() method to the target vector and | |
1910 | then use that. remote.c could implement that method using | |
1911 | the ``qCRC'' packet. */ | |
1912 | gdb_byte *check = xmalloc (bytes); | |
1913 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1914 | ||
1915 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 1916 | error (_("Download verify read failed at %s"), |
f5656ead | 1917 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1918 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 1919 | error (_("Download verify compare failed at %s"), |
f5656ead | 1920 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
1921 | do_cleanups (verify_cleanups); |
1922 | } | |
a76d924d | 1923 | totals->data_count += bytes; |
cf7a04e8 DJ |
1924 | args->lma += bytes; |
1925 | args->buffer += bytes; | |
a76d924d | 1926 | totals->write_count += 1; |
cf7a04e8 | 1927 | args->section_sent += bytes; |
522002f9 | 1928 | if (check_quit_flag () |
cf7a04e8 DJ |
1929 | || (deprecated_ui_load_progress_hook != NULL |
1930 | && deprecated_ui_load_progress_hook (args->section_name, | |
1931 | args->section_sent))) | |
1932 | error (_("Canceled the download")); | |
1933 | ||
1934 | if (deprecated_show_load_progress != NULL) | |
1935 | deprecated_show_load_progress (args->section_name, | |
1936 | args->section_sent, | |
1937 | args->section_size, | |
a76d924d DJ |
1938 | totals->data_count, |
1939 | totals->total_size); | |
cf7a04e8 DJ |
1940 | } |
1941 | ||
e4f9b4d5 MS |
1942 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1943 | ||
1944 | static void | |
1945 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1946 | { | |
a76d924d | 1947 | struct memory_write_request *new_request; |
e4f9b4d5 | 1948 | struct load_section_data *args = data; |
a76d924d | 1949 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1950 | bfd_size_type size = bfd_get_section_size (asec); |
1951 | gdb_byte *buffer; | |
cf7a04e8 | 1952 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1953 | |
cf7a04e8 DJ |
1954 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1955 | return; | |
e4f9b4d5 | 1956 | |
cf7a04e8 DJ |
1957 | if (size == 0) |
1958 | return; | |
e4f9b4d5 | 1959 | |
a76d924d DJ |
1960 | new_request = VEC_safe_push (memory_write_request_s, |
1961 | args->requests, NULL); | |
1962 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1963 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1964 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
1965 | new_request->end = new_request->begin + size; /* FIXME Should size |
1966 | be in instead? */ | |
a76d924d DJ |
1967 | new_request->data = xmalloc (size); |
1968 | new_request->baton = section_data; | |
cf7a04e8 | 1969 | |
a76d924d | 1970 | buffer = new_request->data; |
cf7a04e8 | 1971 | |
a76d924d DJ |
1972 | section_data->cumulative = args->progress_data; |
1973 | section_data->section_name = sect_name; | |
1974 | section_data->section_size = size; | |
1975 | section_data->lma = new_request->begin; | |
1976 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1977 | |
1978 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1979 | } |
1980 | ||
1981 | /* Clean up an entire memory request vector, including load | |
1982 | data and progress records. */ | |
cf7a04e8 | 1983 | |
a76d924d DJ |
1984 | static void |
1985 | clear_memory_write_data (void *arg) | |
1986 | { | |
1987 | VEC(memory_write_request_s) **vec_p = arg; | |
1988 | VEC(memory_write_request_s) *vec = *vec_p; | |
1989 | int i; | |
1990 | struct memory_write_request *mr; | |
cf7a04e8 | 1991 | |
a76d924d DJ |
1992 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1993 | { | |
1994 | xfree (mr->data); | |
1995 | xfree (mr->baton); | |
1996 | } | |
1997 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1998 | } |
1999 | ||
c906108c | 2000 | void |
917317f4 | 2001 | generic_load (char *args, int from_tty) |
c906108c | 2002 | { |
c906108c | 2003 | bfd *loadfile_bfd; |
2b71414d | 2004 | struct timeval start_time, end_time; |
917317f4 | 2005 | char *filename; |
1986bccd | 2006 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2007 | struct load_section_data cbdata; |
a76d924d | 2008 | struct load_progress_data total_progress; |
79a45e25 | 2009 | struct ui_out *uiout = current_uiout; |
a76d924d | 2010 | |
e4f9b4d5 | 2011 | CORE_ADDR entry; |
1986bccd | 2012 | char **argv; |
e4f9b4d5 | 2013 | |
a76d924d DJ |
2014 | memset (&cbdata, 0, sizeof (cbdata)); |
2015 | memset (&total_progress, 0, sizeof (total_progress)); | |
2016 | cbdata.progress_data = &total_progress; | |
2017 | ||
2018 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2019 | |
d1a41061 PP |
2020 | if (args == NULL) |
2021 | error_no_arg (_("file to load")); | |
1986bccd | 2022 | |
d1a41061 | 2023 | argv = gdb_buildargv (args); |
1986bccd AS |
2024 | make_cleanup_freeargv (argv); |
2025 | ||
2026 | filename = tilde_expand (argv[0]); | |
2027 | make_cleanup (xfree, filename); | |
2028 | ||
2029 | if (argv[1] != NULL) | |
917317f4 | 2030 | { |
f698ca8e | 2031 | const char *endptr; |
ba5f2f8a | 2032 | |
f698ca8e | 2033 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2034 | |
2035 | /* If the last word was not a valid number then | |
2036 | treat it as a file name with spaces in. */ | |
2037 | if (argv[1] == endptr) | |
2038 | error (_("Invalid download offset:%s."), argv[1]); | |
2039 | ||
2040 | if (argv[2] != NULL) | |
2041 | error (_("Too many parameters.")); | |
917317f4 | 2042 | } |
c906108c | 2043 | |
c378eb4e | 2044 | /* Open the file for loading. */ |
1c00ec6b | 2045 | loadfile_bfd = gdb_bfd_open (filename, gnutarget, -1); |
c906108c SS |
2046 | if (loadfile_bfd == NULL) |
2047 | { | |
2048 | perror_with_name (filename); | |
2049 | return; | |
2050 | } | |
917317f4 | 2051 | |
f9a062ff | 2052 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2053 | |
c5aa993b | 2054 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2055 | { |
8a3fe4f8 | 2056 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2057 | bfd_errmsg (bfd_get_error ())); |
2058 | } | |
c5aa993b | 2059 | |
5417f6dc | 2060 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2061 | (void *) &total_progress.total_size); |
2062 | ||
2063 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2064 | |
2b71414d | 2065 | gettimeofday (&start_time, NULL); |
c906108c | 2066 | |
a76d924d DJ |
2067 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2068 | load_progress) != 0) | |
2069 | error (_("Load failed")); | |
c906108c | 2070 | |
2b71414d | 2071 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2072 | |
e4f9b4d5 | 2073 | entry = bfd_get_start_address (loadfile_bfd); |
8c2b9656 | 2074 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
e4f9b4d5 | 2075 | ui_out_text (uiout, "Start address "); |
f5656ead | 2076 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch (), entry)); |
e4f9b4d5 | 2077 | ui_out_text (uiout, ", load size "); |
a76d924d | 2078 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2079 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2080 | /* We were doing this in remote-mips.c, I suspect it is right |
2081 | for other targets too. */ | |
fb14de7b | 2082 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2083 | |
38963c97 DJ |
2084 | /* Reset breakpoints, now that we have changed the load image. For |
2085 | instance, breakpoints may have been set (or reset, by | |
2086 | post_create_inferior) while connected to the target but before we | |
2087 | loaded the program. In that case, the prologue analyzer could | |
2088 | have read instructions from the target to find the right | |
2089 | breakpoint locations. Loading has changed the contents of that | |
2090 | memory. */ | |
2091 | ||
2092 | breakpoint_re_set (); | |
2093 | ||
7ca9f392 AC |
2094 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2095 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2096 | was commented out), making the call confuses GDB if more than one | |
2097 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2098 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2099 | |
a76d924d DJ |
2100 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2101 | total_progress.write_count, | |
2102 | &start_time, &end_time); | |
c906108c SS |
2103 | |
2104 | do_cleanups (old_cleanups); | |
2105 | } | |
2106 | ||
c378eb4e | 2107 | /* Report how fast the transfer went. */ |
c906108c | 2108 | |
917317f4 | 2109 | void |
d9fcf2fb | 2110 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2111 | unsigned long data_count, |
2112 | unsigned long write_count, | |
2b71414d DJ |
2113 | const struct timeval *start_time, |
2114 | const struct timeval *end_time) | |
917317f4 | 2115 | { |
9f43d28c | 2116 | ULONGEST time_count; |
79a45e25 | 2117 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2118 | |
2119 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2120 | accuracy and overflow. */ | |
2121 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2122 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2123 | ||
8b93c638 JM |
2124 | ui_out_text (uiout, "Transfer rate: "); |
2125 | if (time_count > 0) | |
2126 | { | |
9f43d28c DJ |
2127 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2128 | ||
2129 | if (ui_out_is_mi_like_p (uiout)) | |
2130 | { | |
2131 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2132 | ui_out_text (uiout, " bits/sec"); | |
2133 | } | |
2134 | else if (rate < 1024) | |
2135 | { | |
2136 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2137 | ui_out_text (uiout, " bytes/sec"); | |
2138 | } | |
2139 | else | |
2140 | { | |
2141 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2142 | ui_out_text (uiout, " KB/sec"); | |
2143 | } | |
8b93c638 JM |
2144 | } |
2145 | else | |
2146 | { | |
ba5f2f8a | 2147 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2148 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2149 | } |
2150 | if (write_count > 0) | |
2151 | { | |
2152 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2153 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2154 | ui_out_text (uiout, " bytes/write"); |
2155 | } | |
2156 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2157 | } |
2158 | ||
2159 | /* This function allows the addition of incrementally linked object files. | |
2160 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2161 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2162 | special case syntax for the rombug target (Rombug is the boot | |
2163 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2164 | rombug case, the user doesn't need to supply a text address, | |
2165 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2166 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2167 | |
c906108c | 2168 | static void |
fba45db2 | 2169 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2170 | { |
5af949e3 | 2171 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2172 | char *filename = NULL; |
2df3850c | 2173 | int flags = OBJF_USERLOADED; |
c906108c | 2174 | char *arg; |
db162d44 | 2175 | int section_index = 0; |
2acceee2 JM |
2176 | int argcnt = 0; |
2177 | int sec_num = 0; | |
2178 | int i; | |
db162d44 EZ |
2179 | int expecting_sec_name = 0; |
2180 | int expecting_sec_addr = 0; | |
5b96932b | 2181 | char **argv; |
db162d44 | 2182 | |
a39a16c4 | 2183 | struct sect_opt |
2acceee2 | 2184 | { |
2acceee2 JM |
2185 | char *name; |
2186 | char *value; | |
a39a16c4 | 2187 | }; |
db162d44 | 2188 | |
a39a16c4 MM |
2189 | struct section_addr_info *section_addrs; |
2190 | struct sect_opt *sect_opts = NULL; | |
2191 | size_t num_sect_opts = 0; | |
3017564a | 2192 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2193 | |
a39a16c4 | 2194 | num_sect_opts = 16; |
5417f6dc | 2195 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2196 | * sizeof (struct sect_opt)); |
2197 | ||
c906108c SS |
2198 | dont_repeat (); |
2199 | ||
2200 | if (args == NULL) | |
8a3fe4f8 | 2201 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2202 | |
d1a41061 | 2203 | argv = gdb_buildargv (args); |
5b96932b | 2204 | make_cleanup_freeargv (argv); |
db162d44 | 2205 | |
5b96932b AS |
2206 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2207 | { | |
c378eb4e | 2208 | /* Process the argument. */ |
db162d44 | 2209 | if (argcnt == 0) |
c906108c | 2210 | { |
c378eb4e | 2211 | /* The first argument is the file name. */ |
db162d44 | 2212 | filename = tilde_expand (arg); |
3017564a | 2213 | make_cleanup (xfree, filename); |
c906108c | 2214 | } |
db162d44 | 2215 | else |
7a78ae4e ND |
2216 | if (argcnt == 1) |
2217 | { | |
2218 | /* The second argument is always the text address at which | |
c378eb4e | 2219 | to load the program. */ |
7a78ae4e ND |
2220 | sect_opts[section_index].name = ".text"; |
2221 | sect_opts[section_index].value = arg; | |
f414f22f | 2222 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2223 | { |
2224 | num_sect_opts *= 2; | |
5417f6dc | 2225 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2226 | xrealloc (sect_opts, |
5417f6dc | 2227 | num_sect_opts |
a39a16c4 MM |
2228 | * sizeof (struct sect_opt))); |
2229 | } | |
7a78ae4e ND |
2230 | } |
2231 | else | |
2232 | { | |
2233 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2234 | to an option. */ |
7a78ae4e ND |
2235 | |
2236 | if (*arg == '-') | |
2237 | { | |
78a4a9b9 AC |
2238 | if (strcmp (arg, "-readnow") == 0) |
2239 | flags |= OBJF_READNOW; | |
2240 | else if (strcmp (arg, "-s") == 0) | |
2241 | { | |
2242 | expecting_sec_name = 1; | |
2243 | expecting_sec_addr = 1; | |
2244 | } | |
7a78ae4e ND |
2245 | } |
2246 | else | |
2247 | { | |
2248 | if (expecting_sec_name) | |
db162d44 | 2249 | { |
7a78ae4e ND |
2250 | sect_opts[section_index].name = arg; |
2251 | expecting_sec_name = 0; | |
db162d44 EZ |
2252 | } |
2253 | else | |
7a78ae4e ND |
2254 | if (expecting_sec_addr) |
2255 | { | |
2256 | sect_opts[section_index].value = arg; | |
2257 | expecting_sec_addr = 0; | |
f414f22f | 2258 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2259 | { |
2260 | num_sect_opts *= 2; | |
5417f6dc | 2261 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2262 | xrealloc (sect_opts, |
5417f6dc | 2263 | num_sect_opts |
a39a16c4 MM |
2264 | * sizeof (struct sect_opt))); |
2265 | } | |
7a78ae4e ND |
2266 | } |
2267 | else | |
3e43a32a | 2268 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2269 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2270 | } |
2271 | } | |
c906108c | 2272 | } |
c906108c | 2273 | |
927890d0 JB |
2274 | /* This command takes at least two arguments. The first one is a |
2275 | filename, and the second is the address where this file has been | |
2276 | loaded. Abort now if this address hasn't been provided by the | |
2277 | user. */ | |
2278 | if (section_index < 1) | |
2279 | error (_("The address where %s has been loaded is missing"), filename); | |
2280 | ||
c378eb4e | 2281 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2282 | a sect_addr_info structure to be passed around to other |
2283 | functions. We have to split this up into separate print | |
bb599908 | 2284 | statements because hex_string returns a local static |
c378eb4e | 2285 | string. */ |
5417f6dc | 2286 | |
a3f17187 | 2287 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2288 | section_addrs = alloc_section_addr_info (section_index); |
2289 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2290 | for (i = 0; i < section_index; i++) |
c906108c | 2291 | { |
db162d44 EZ |
2292 | CORE_ADDR addr; |
2293 | char *val = sect_opts[i].value; | |
2294 | char *sec = sect_opts[i].name; | |
5417f6dc | 2295 | |
ae822768 | 2296 | addr = parse_and_eval_address (val); |
db162d44 | 2297 | |
db162d44 | 2298 | /* Here we store the section offsets in the order they were |
c378eb4e | 2299 | entered on the command line. */ |
a39a16c4 MM |
2300 | section_addrs->other[sec_num].name = sec; |
2301 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2302 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2303 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2304 | sec_num++; |
2305 | ||
5417f6dc | 2306 | /* The object's sections are initialized when a |
db162d44 | 2307 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2308 | This happens in reread_symbols. |
db162d44 EZ |
2309 | At this point, we don't know what file type this is, |
2310 | so we can't determine what section names are valid. */ | |
2acceee2 | 2311 | } |
d76488d8 | 2312 | section_addrs->num_sections = sec_num; |
db162d44 | 2313 | |
2acceee2 | 2314 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2315 | error (_("Not confirmed.")); |
c906108c | 2316 | |
7eedccfa PP |
2317 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2318 | section_addrs, flags); | |
c906108c SS |
2319 | |
2320 | /* Getting new symbols may change our opinion about what is | |
2321 | frameless. */ | |
2322 | reinit_frame_cache (); | |
db162d44 | 2323 | do_cleanups (my_cleanups); |
c906108c SS |
2324 | } |
2325 | \f | |
70992597 | 2326 | |
4ac39b97 JK |
2327 | typedef struct objfile *objfilep; |
2328 | ||
2329 | DEF_VEC_P (objfilep); | |
2330 | ||
c906108c | 2331 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2332 | |
c906108c | 2333 | void |
fba45db2 | 2334 | reread_symbols (void) |
c906108c SS |
2335 | { |
2336 | struct objfile *objfile; | |
2337 | long new_modtime; | |
c906108c SS |
2338 | struct stat new_statbuf; |
2339 | int res; | |
4ac39b97 JK |
2340 | VEC (objfilep) *new_objfiles = NULL; |
2341 | struct cleanup *all_cleanups; | |
2342 | ||
2343 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2344 | |
2345 | /* With the addition of shared libraries, this should be modified, | |
2346 | the load time should be saved in the partial symbol tables, since | |
2347 | different tables may come from different source files. FIXME. | |
2348 | This routine should then walk down each partial symbol table | |
c378eb4e | 2349 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2350 | |
c5aa993b JM |
2351 | for (objfile = object_files; objfile; objfile = objfile->next) |
2352 | { | |
9cce227f TG |
2353 | /* solib-sunos.c creates one objfile with obfd. */ |
2354 | if (objfile->obfd == NULL) | |
2355 | continue; | |
2356 | ||
2357 | /* Separate debug objfiles are handled in the main objfile. */ | |
2358 | if (objfile->separate_debug_objfile_backlink) | |
2359 | continue; | |
2360 | ||
02aeec7b JB |
2361 | /* If this object is from an archive (what you usually create with |
2362 | `ar', often called a `static library' on most systems, though | |
2363 | a `shared library' on AIX is also an archive), then you should | |
2364 | stat on the archive name, not member name. */ | |
9cce227f TG |
2365 | if (objfile->obfd->my_archive) |
2366 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2367 | else | |
9cce227f TG |
2368 | res = stat (objfile->name, &new_statbuf); |
2369 | if (res != 0) | |
2370 | { | |
c378eb4e | 2371 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2372 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2373 | objfile->name); | |
2374 | continue; | |
2375 | } | |
2376 | new_modtime = new_statbuf.st_mtime; | |
2377 | if (new_modtime != objfile->mtime) | |
2378 | { | |
2379 | struct cleanup *old_cleanups; | |
2380 | struct section_offsets *offsets; | |
2381 | int num_offsets; | |
2382 | char *obfd_filename; | |
2383 | ||
2384 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2385 | objfile->name); | |
2386 | ||
2387 | /* There are various functions like symbol_file_add, | |
2388 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2389 | appear to do what we want. But they have various other | |
2390 | effects which we *don't* want. So we just do stuff | |
2391 | ourselves. We don't worry about mapped files (for one thing, | |
2392 | any mapped file will be out of date). */ | |
2393 | ||
2394 | /* If we get an error, blow away this objfile (not sure if | |
2395 | that is the correct response for things like shared | |
2396 | libraries). */ | |
2397 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2398 | /* We need to do this whenever any symbols go away. */ | |
2399 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2400 | ||
0ba1096a KT |
2401 | if (exec_bfd != NULL |
2402 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2403 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2404 | { |
2405 | /* Reload EXEC_BFD without asking anything. */ | |
2406 | ||
2407 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2408 | } | |
2409 | ||
f6eeced0 JK |
2410 | /* Keep the calls order approx. the same as in free_objfile. */ |
2411 | ||
2412 | /* Free the separate debug objfiles. It will be | |
2413 | automatically recreated by sym_read. */ | |
2414 | free_objfile_separate_debug (objfile); | |
2415 | ||
2416 | /* Remove any references to this objfile in the global | |
2417 | value lists. */ | |
2418 | preserve_values (objfile); | |
2419 | ||
2420 | /* Nuke all the state that we will re-read. Much of the following | |
2421 | code which sets things to NULL really is necessary to tell | |
2422 | other parts of GDB that there is nothing currently there. | |
2423 | ||
2424 | Try to keep the freeing order compatible with free_objfile. */ | |
2425 | ||
2426 | if (objfile->sf != NULL) | |
2427 | { | |
2428 | (*objfile->sf->sym_finish) (objfile); | |
2429 | } | |
2430 | ||
2431 | clear_objfile_data (objfile); | |
2432 | ||
e1507e95 | 2433 | /* Clean up any state BFD has sitting around. */ |
a4453b7e TT |
2434 | { |
2435 | struct bfd *obfd = objfile->obfd; | |
2436 | ||
2437 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2438 | /* Open the new BFD before freeing the old one, so that | |
2439 | the filename remains live. */ | |
08d2cd74 | 2440 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
e1507e95 TT |
2441 | if (objfile->obfd == NULL) |
2442 | { | |
2443 | /* We have to make a cleanup and error here, rather | |
2444 | than erroring later, because once we unref OBFD, | |
2445 | OBFD_FILENAME will be freed. */ | |
2446 | make_cleanup_bfd_unref (obfd); | |
2447 | error (_("Can't open %s to read symbols."), obfd_filename); | |
2448 | } | |
a4453b7e TT |
2449 | gdb_bfd_unref (obfd); |
2450 | } | |
2451 | ||
e1507e95 | 2452 | objfile->name = bfd_get_filename (objfile->obfd); |
9cce227f TG |
2453 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2454 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2455 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2456 | bfd_errmsg (bfd_get_error ())); | |
2457 | ||
2458 | /* Save the offsets, we will nuke them with the rest of the | |
2459 | objfile_obstack. */ | |
2460 | num_offsets = objfile->num_sections; | |
2461 | offsets = ((struct section_offsets *) | |
2462 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2463 | memcpy (offsets, objfile->section_offsets, | |
2464 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2465 | ||
9cce227f TG |
2466 | /* FIXME: Do we have to free a whole linked list, or is this |
2467 | enough? */ | |
2468 | if (objfile->global_psymbols.list) | |
2469 | xfree (objfile->global_psymbols.list); | |
2470 | memset (&objfile->global_psymbols, 0, | |
2471 | sizeof (objfile->global_psymbols)); | |
2472 | if (objfile->static_psymbols.list) | |
2473 | xfree (objfile->static_psymbols.list); | |
2474 | memset (&objfile->static_psymbols, 0, | |
2475 | sizeof (objfile->static_psymbols)); | |
2476 | ||
c378eb4e | 2477 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2478 | psymbol_bcache_free (objfile->psymbol_cache); |
2479 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f TG |
2480 | if (objfile->demangled_names_hash != NULL) |
2481 | { | |
2482 | htab_delete (objfile->demangled_names_hash); | |
2483 | objfile->demangled_names_hash = NULL; | |
2484 | } | |
2485 | obstack_free (&objfile->objfile_obstack, 0); | |
2486 | objfile->sections = NULL; | |
2487 | objfile->symtabs = NULL; | |
2488 | objfile->psymtabs = NULL; | |
2489 | objfile->psymtabs_addrmap = NULL; | |
2490 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2491 | objfile->template_symbols = NULL; |
9cce227f | 2492 | objfile->msymbols = NULL; |
9cce227f TG |
2493 | objfile->minimal_symbol_count = 0; |
2494 | memset (&objfile->msymbol_hash, 0, | |
2495 | sizeof (objfile->msymbol_hash)); | |
2496 | memset (&objfile->msymbol_demangled_hash, 0, | |
2497 | sizeof (objfile->msymbol_demangled_hash)); | |
2498 | ||
706e3705 TT |
2499 | set_objfile_per_bfd (objfile); |
2500 | ||
9cce227f TG |
2501 | /* obstack_init also initializes the obstack so it is |
2502 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2503 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2504 | obstack_init (&objfile->objfile_obstack); |
d82ea6a8 | 2505 | build_objfile_section_table (objfile); |
9cce227f TG |
2506 | terminate_minimal_symbol_table (objfile); |
2507 | ||
2508 | /* We use the same section offsets as from last time. I'm not | |
2509 | sure whether that is always correct for shared libraries. */ | |
2510 | objfile->section_offsets = (struct section_offsets *) | |
2511 | obstack_alloc (&objfile->objfile_obstack, | |
2512 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2513 | memcpy (objfile->section_offsets, offsets, | |
2514 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2515 | objfile->num_sections = num_offsets; | |
2516 | ||
2517 | /* What the hell is sym_new_init for, anyway? The concept of | |
2518 | distinguishing between the main file and additional files | |
2519 | in this way seems rather dubious. */ | |
2520 | if (objfile == symfile_objfile) | |
c906108c | 2521 | { |
9cce227f | 2522 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2523 | } |
9cce227f TG |
2524 | |
2525 | (*objfile->sf->sym_init) (objfile); | |
2526 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2527 | |
2528 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2529 | read_symbols (objfile, 0); | |
b11896a5 | 2530 | |
9cce227f | 2531 | if (!objfile_has_symbols (objfile)) |
c906108c | 2532 | { |
9cce227f TG |
2533 | wrap_here (""); |
2534 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2535 | wrap_here (""); | |
c5aa993b | 2536 | } |
9cce227f TG |
2537 | |
2538 | /* We're done reading the symbol file; finish off complaints. */ | |
2539 | clear_complaints (&symfile_complaints, 0, 1); | |
2540 | ||
2541 | /* Getting new symbols may change our opinion about what is | |
2542 | frameless. */ | |
2543 | ||
2544 | reinit_frame_cache (); | |
2545 | ||
2546 | /* Discard cleanups as symbol reading was successful. */ | |
2547 | discard_cleanups (old_cleanups); | |
2548 | ||
2549 | /* If the mtime has changed between the time we set new_modtime | |
2550 | and now, we *want* this to be out of date, so don't call stat | |
2551 | again now. */ | |
2552 | objfile->mtime = new_modtime; | |
9cce227f | 2553 | init_entry_point_info (objfile); |
4ac39b97 JK |
2554 | |
2555 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2556 | } |
2557 | } | |
c906108c | 2558 | |
4ac39b97 | 2559 | if (new_objfiles) |
ea53e89f | 2560 | { |
4ac39b97 JK |
2561 | int ix; |
2562 | ||
ff3536bc UW |
2563 | /* Notify objfiles that we've modified objfile sections. */ |
2564 | objfiles_changed (); | |
2565 | ||
c1e56572 | 2566 | clear_symtab_users (0); |
4ac39b97 JK |
2567 | |
2568 | /* clear_objfile_data for each objfile was called before freeing it and | |
2569 | observer_notify_new_objfile (NULL) has been called by | |
2570 | clear_symtab_users above. Notify the new files now. */ | |
2571 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2572 | observer_notify_new_objfile (objfile); | |
2573 | ||
ea53e89f JB |
2574 | /* At least one objfile has changed, so we can consider that |
2575 | the executable we're debugging has changed too. */ | |
781b42b0 | 2576 | observer_notify_executable_changed (); |
ea53e89f | 2577 | } |
4ac39b97 JK |
2578 | |
2579 | do_cleanups (all_cleanups); | |
c906108c | 2580 | } |
c906108c SS |
2581 | \f |
2582 | ||
c5aa993b JM |
2583 | typedef struct |
2584 | { | |
2585 | char *ext; | |
c906108c | 2586 | enum language lang; |
c5aa993b JM |
2587 | } |
2588 | filename_language; | |
c906108c | 2589 | |
c5aa993b | 2590 | static filename_language *filename_language_table; |
c906108c SS |
2591 | static int fl_table_size, fl_table_next; |
2592 | ||
2593 | static void | |
fba45db2 | 2594 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2595 | { |
2596 | if (fl_table_next >= fl_table_size) | |
2597 | { | |
2598 | fl_table_size += 10; | |
5417f6dc | 2599 | filename_language_table = |
25bf3106 PM |
2600 | xrealloc (filename_language_table, |
2601 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2602 | } |
2603 | ||
4fcf66da | 2604 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2605 | filename_language_table[fl_table_next].lang = lang; |
2606 | fl_table_next++; | |
2607 | } | |
2608 | ||
2609 | static char *ext_args; | |
920d2a44 AC |
2610 | static void |
2611 | show_ext_args (struct ui_file *file, int from_tty, | |
2612 | struct cmd_list_element *c, const char *value) | |
2613 | { | |
3e43a32a MS |
2614 | fprintf_filtered (file, |
2615 | _("Mapping between filename extension " | |
2616 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2617 | value); |
2618 | } | |
c906108c SS |
2619 | |
2620 | static void | |
26c41df3 | 2621 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2622 | { |
2623 | int i; | |
2624 | char *cp = ext_args; | |
2625 | enum language lang; | |
2626 | ||
c378eb4e | 2627 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2628 | if (*cp != '.') |
8a3fe4f8 | 2629 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2630 | |
2631 | /* Find end of first arg. */ | |
c5aa993b | 2632 | while (*cp && !isspace (*cp)) |
c906108c SS |
2633 | cp++; |
2634 | ||
2635 | if (*cp == '\0') | |
3e43a32a MS |
2636 | error (_("'%s': two arguments required -- " |
2637 | "filename extension and language"), | |
c906108c SS |
2638 | ext_args); |
2639 | ||
c378eb4e | 2640 | /* Null-terminate first arg. */ |
c5aa993b | 2641 | *cp++ = '\0'; |
c906108c SS |
2642 | |
2643 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2644 | cp = skip_spaces (cp); |
c906108c SS |
2645 | |
2646 | if (*cp == '\0') | |
3e43a32a MS |
2647 | error (_("'%s': two arguments required -- " |
2648 | "filename extension and language"), | |
c906108c SS |
2649 | ext_args); |
2650 | ||
2651 | /* Lookup the language from among those we know. */ | |
2652 | lang = language_enum (cp); | |
2653 | ||
2654 | /* Now lookup the filename extension: do we already know it? */ | |
2655 | for (i = 0; i < fl_table_next; i++) | |
2656 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2657 | break; | |
2658 | ||
2659 | if (i >= fl_table_next) | |
2660 | { | |
c378eb4e | 2661 | /* New file extension. */ |
c906108c SS |
2662 | add_filename_language (ext_args, lang); |
2663 | } | |
2664 | else | |
2665 | { | |
c378eb4e | 2666 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2667 | |
2668 | /* if (from_tty) */ | |
2669 | /* query ("Really make files of type %s '%s'?", */ | |
2670 | /* ext_args, language_str (lang)); */ | |
2671 | ||
b8c9b27d | 2672 | xfree (filename_language_table[i].ext); |
4fcf66da | 2673 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2674 | filename_language_table[i].lang = lang; |
2675 | } | |
2676 | } | |
2677 | ||
2678 | static void | |
fba45db2 | 2679 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2680 | { |
2681 | int i; | |
2682 | ||
a3f17187 | 2683 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2684 | printf_filtered ("\n\n"); |
2685 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2686 | printf_filtered ("\t%s\t- %s\n", |
2687 | filename_language_table[i].ext, | |
c906108c SS |
2688 | language_str (filename_language_table[i].lang)); |
2689 | } | |
2690 | ||
2691 | static void | |
fba45db2 | 2692 | init_filename_language_table (void) |
c906108c | 2693 | { |
c378eb4e | 2694 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2695 | { |
2696 | fl_table_size = 20; | |
2697 | fl_table_next = 0; | |
c5aa993b | 2698 | filename_language_table = |
c906108c | 2699 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2700 | add_filename_language (".c", language_c); |
6aecb9c2 | 2701 | add_filename_language (".d", language_d); |
c5aa993b JM |
2702 | add_filename_language (".C", language_cplus); |
2703 | add_filename_language (".cc", language_cplus); | |
2704 | add_filename_language (".cp", language_cplus); | |
2705 | add_filename_language (".cpp", language_cplus); | |
2706 | add_filename_language (".cxx", language_cplus); | |
2707 | add_filename_language (".c++", language_cplus); | |
2708 | add_filename_language (".java", language_java); | |
c906108c | 2709 | add_filename_language (".class", language_java); |
da2cf7e0 | 2710 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2711 | add_filename_language (".f", language_fortran); |
2712 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2713 | add_filename_language (".for", language_fortran); |
2714 | add_filename_language (".FOR", language_fortran); | |
2715 | add_filename_language (".ftn", language_fortran); | |
2716 | add_filename_language (".FTN", language_fortran); | |
2717 | add_filename_language (".fpp", language_fortran); | |
2718 | add_filename_language (".FPP", language_fortran); | |
2719 | add_filename_language (".f90", language_fortran); | |
2720 | add_filename_language (".F90", language_fortran); | |
2721 | add_filename_language (".f95", language_fortran); | |
2722 | add_filename_language (".F95", language_fortran); | |
2723 | add_filename_language (".f03", language_fortran); | |
2724 | add_filename_language (".F03", language_fortran); | |
2725 | add_filename_language (".f08", language_fortran); | |
2726 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2727 | add_filename_language (".s", language_asm); |
aa707ed0 | 2728 | add_filename_language (".sx", language_asm); |
c5aa993b | 2729 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2730 | add_filename_language (".pas", language_pascal); |
2731 | add_filename_language (".p", language_pascal); | |
2732 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2733 | add_filename_language (".adb", language_ada); |
2734 | add_filename_language (".ads", language_ada); | |
2735 | add_filename_language (".a", language_ada); | |
2736 | add_filename_language (".ada", language_ada); | |
dde59185 | 2737 | add_filename_language (".dg", language_ada); |
c906108c SS |
2738 | } |
2739 | } | |
2740 | ||
2741 | enum language | |
dd786858 | 2742 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2743 | { |
2744 | int i; | |
2745 | char *cp; | |
2746 | ||
2747 | if (filename != NULL) | |
2748 | if ((cp = strrchr (filename, '.')) != NULL) | |
2749 | for (i = 0; i < fl_table_next; i++) | |
2750 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2751 | return filename_language_table[i].lang; | |
2752 | ||
2753 | return language_unknown; | |
2754 | } | |
2755 | \f | |
2756 | /* allocate_symtab: | |
2757 | ||
2758 | Allocate and partly initialize a new symbol table. Return a pointer | |
2759 | to it. error() if no space. | |
2760 | ||
2761 | Caller must set these fields: | |
c5aa993b JM |
2762 | LINETABLE(symtab) |
2763 | symtab->blockvector | |
2764 | symtab->dirname | |
2765 | symtab->free_code | |
2766 | symtab->free_ptr | |
c906108c SS |
2767 | */ |
2768 | ||
2769 | struct symtab * | |
72b9f47f | 2770 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2771 | { |
52f0bd74 | 2772 | struct symtab *symtab; |
c906108c SS |
2773 | |
2774 | symtab = (struct symtab *) | |
4a146b47 | 2775 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2776 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf | 2777 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
706e3705 | 2778 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2779 | symtab->fullname = NULL; |
2780 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2781 | symtab->debugformat = "unknown"; |
c906108c | 2782 | |
c378eb4e | 2783 | /* Hook it to the objfile it comes from. */ |
c906108c | 2784 | |
c5aa993b JM |
2785 | symtab->objfile = objfile; |
2786 | symtab->next = objfile->symtabs; | |
2787 | objfile->symtabs = symtab; | |
c906108c | 2788 | |
45cfd468 DE |
2789 | if (symtab_create_debug) |
2790 | { | |
2791 | /* Be a bit clever with debugging messages, and don't print objfile | |
2792 | every time, only when it changes. */ | |
2793 | static char *last_objfile_name = NULL; | |
2794 | ||
2795 | if (last_objfile_name == NULL | |
2796 | || strcmp (last_objfile_name, objfile->name) != 0) | |
2797 | { | |
2798 | xfree (last_objfile_name); | |
2799 | last_objfile_name = xstrdup (objfile->name); | |
2800 | fprintf_unfiltered (gdb_stdlog, | |
2801 | "Creating one or more symtabs for objfile %s ...\n", | |
2802 | last_objfile_name); | |
2803 | } | |
2804 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2805 | "Created symtab %s for module %s.\n", |
2806 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2807 | } |
2808 | ||
c906108c SS |
2809 | return (symtab); |
2810 | } | |
c906108c | 2811 | \f |
c5aa993b | 2812 | |
c906108c | 2813 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2814 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2815 | |
2816 | void | |
c1e56572 | 2817 | clear_symtab_users (int add_flags) |
c906108c SS |
2818 | { |
2819 | /* Someday, we should do better than this, by only blowing away | |
2820 | the things that really need to be blown. */ | |
c0501be5 DJ |
2821 | |
2822 | /* Clear the "current" symtab first, because it is no longer valid. | |
2823 | breakpoint_re_set may try to access the current symtab. */ | |
2824 | clear_current_source_symtab_and_line (); | |
2825 | ||
c906108c | 2826 | clear_displays (); |
c1e56572 JK |
2827 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2828 | breakpoint_re_set (); | |
1bfeeb0f | 2829 | clear_last_displayed_sal (); |
c906108c | 2830 | clear_pc_function_cache (); |
06d3b283 | 2831 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2832 | |
2833 | /* Clear globals which might have pointed into a removed objfile. | |
2834 | FIXME: It's not clear which of these are supposed to persist | |
2835 | between expressions and which ought to be reset each time. */ | |
2836 | expression_context_block = NULL; | |
2837 | innermost_block = NULL; | |
8756216b DP |
2838 | |
2839 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2840 | varobj_invalidate (); | |
2841 | ||
c906108c SS |
2842 | } |
2843 | ||
74b7792f AC |
2844 | static void |
2845 | clear_symtab_users_cleanup (void *ignore) | |
2846 | { | |
c1e56572 | 2847 | clear_symtab_users (0); |
74b7792f | 2848 | } |
c906108c | 2849 | \f |
c906108c SS |
2850 | /* OVERLAYS: |
2851 | The following code implements an abstraction for debugging overlay sections. | |
2852 | ||
2853 | The target model is as follows: | |
2854 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2855 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2856 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2857 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2858 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2859 | sections should be considered to be mapped from the VMA to the LMA. |
2860 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2861 | For instance, if a section has been mapped then its contents |
c5aa993b | 2862 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2863 | |
2864 | Two levels of debugger support for overlays are available. One is | |
2865 | "manual", in which the debugger relies on the user to tell it which | |
2866 | overlays are currently mapped. This level of support is | |
2867 | implemented entirely in the core debugger, and the information about | |
2868 | whether a section is mapped is kept in the objfile->obj_section table. | |
2869 | ||
2870 | The second level of support is "automatic", and is only available if | |
2871 | the target-specific code provides functionality to read the target's | |
2872 | overlay mapping table, and translate its contents for the debugger | |
2873 | (by updating the mapped state information in the obj_section tables). | |
2874 | ||
2875 | The interface is as follows: | |
c5aa993b JM |
2876 | User commands: |
2877 | overlay map <name> -- tell gdb to consider this section mapped | |
2878 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2879 | overlay list -- list the sections that GDB thinks are mapped | |
2880 | overlay read-target -- get the target's state of what's mapped | |
2881 | overlay off/manual/auto -- set overlay debugging state | |
2882 | Functional interface: | |
2883 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2884 | section, return that section. | |
5417f6dc | 2885 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2886 | the pc, either in its VMA or its LMA |
714835d5 | 2887 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2888 | section_is_overlay(sect): true if section's VMA != LMA |
2889 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2890 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2891 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2892 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2893 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2894 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2895 | either in VMA or LMA depending on whether | |
c378eb4e | 2896 | the symbol's section is currently mapped. */ |
c906108c SS |
2897 | |
2898 | /* Overlay debugging state: */ | |
2899 | ||
d874f1e2 | 2900 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2901 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2902 | |
c906108c | 2903 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2904 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2905 | SECTION is loaded at an address different from where it will "run". */ |
2906 | ||
2907 | int | |
714835d5 | 2908 | section_is_overlay (struct obj_section *section) |
c906108c | 2909 | { |
714835d5 UW |
2910 | if (overlay_debugging && section) |
2911 | { | |
2912 | bfd *abfd = section->objfile->obfd; | |
2913 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2914 | |
714835d5 UW |
2915 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2916 | && bfd_section_lma (abfd, bfd_section) | |
2917 | != bfd_section_vma (abfd, bfd_section)) | |
2918 | return 1; | |
2919 | } | |
c906108c SS |
2920 | |
2921 | return 0; | |
2922 | } | |
2923 | ||
2924 | /* Function: overlay_invalidate_all (void) | |
2925 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2926 | ||
2927 | static void | |
fba45db2 | 2928 | overlay_invalidate_all (void) |
c906108c | 2929 | { |
c5aa993b | 2930 | struct objfile *objfile; |
c906108c SS |
2931 | struct obj_section *sect; |
2932 | ||
2933 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2934 | if (section_is_overlay (sect)) |
2935 | sect->ovly_mapped = -1; | |
c906108c SS |
2936 | } |
2937 | ||
714835d5 | 2938 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2939 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2940 | |
2941 | Access to the ovly_mapped flag is restricted to this function, so | |
2942 | that we can do automatic update. If the global flag | |
2943 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2944 | overlay_invalidate_all. If the mapped state of the particular | |
2945 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2946 | ||
714835d5 UW |
2947 | int |
2948 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2949 | { |
9216df95 UW |
2950 | struct gdbarch *gdbarch; |
2951 | ||
714835d5 | 2952 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2953 | return 0; |
2954 | ||
c5aa993b | 2955 | switch (overlay_debugging) |
c906108c SS |
2956 | { |
2957 | default: | |
d874f1e2 | 2958 | case ovly_off: |
c5aa993b | 2959 | return 0; /* overlay debugging off */ |
d874f1e2 | 2960 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2961 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 2962 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
2963 | gdbarch = get_objfile_arch (osect->objfile); |
2964 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
2965 | { |
2966 | if (overlay_cache_invalid) | |
2967 | { | |
2968 | overlay_invalidate_all (); | |
2969 | overlay_cache_invalid = 0; | |
2970 | } | |
2971 | if (osect->ovly_mapped == -1) | |
9216df95 | 2972 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
2973 | } |
2974 | /* fall thru to manual case */ | |
d874f1e2 | 2975 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2976 | return osect->ovly_mapped == 1; |
2977 | } | |
2978 | } | |
2979 | ||
c906108c SS |
2980 | /* Function: pc_in_unmapped_range |
2981 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2982 | ||
2983 | CORE_ADDR | |
714835d5 | 2984 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2985 | { |
714835d5 UW |
2986 | if (section_is_overlay (section)) |
2987 | { | |
2988 | bfd *abfd = section->objfile->obfd; | |
2989 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 2990 | |
714835d5 UW |
2991 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
2992 | bfd_vma size = bfd_get_section_size (bfd_section); | |
2993 | CORE_ADDR offset = obj_section_offset (section); | |
2994 | ||
2995 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
2996 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
2997 | return 1; | |
2998 | } | |
c906108c | 2999 | |
c906108c SS |
3000 | return 0; |
3001 | } | |
3002 | ||
3003 | /* Function: pc_in_mapped_range | |
3004 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3005 | ||
3006 | CORE_ADDR | |
714835d5 | 3007 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3008 | { |
714835d5 UW |
3009 | if (section_is_overlay (section)) |
3010 | { | |
3011 | if (obj_section_addr (section) <= pc | |
3012 | && pc < obj_section_endaddr (section)) | |
3013 | return 1; | |
3014 | } | |
c906108c | 3015 | |
c906108c SS |
3016 | return 0; |
3017 | } | |
3018 | ||
9ec8e6a0 JB |
3019 | /* Return true if the mapped ranges of sections A and B overlap, false |
3020 | otherwise. */ | |
3b7bacac | 3021 | |
b9362cc7 | 3022 | static int |
714835d5 | 3023 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3024 | { |
714835d5 UW |
3025 | CORE_ADDR a_start = obj_section_addr (a); |
3026 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3027 | CORE_ADDR b_start = obj_section_addr (b); | |
3028 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3029 | |
3030 | return (a_start < b_end && b_start < a_end); | |
3031 | } | |
3032 | ||
c906108c SS |
3033 | /* Function: overlay_unmapped_address (PC, SECTION) |
3034 | Returns the address corresponding to PC in the unmapped (load) range. | |
3035 | May be the same as PC. */ | |
3036 | ||
3037 | CORE_ADDR | |
714835d5 | 3038 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3039 | { |
714835d5 UW |
3040 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3041 | { | |
3042 | bfd *abfd = section->objfile->obfd; | |
3043 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3044 | |
714835d5 UW |
3045 | return pc + bfd_section_lma (abfd, bfd_section) |
3046 | - bfd_section_vma (abfd, bfd_section); | |
3047 | } | |
c906108c SS |
3048 | |
3049 | return pc; | |
3050 | } | |
3051 | ||
3052 | /* Function: overlay_mapped_address (PC, SECTION) | |
3053 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3054 | May be the same as PC. */ | |
3055 | ||
3056 | CORE_ADDR | |
714835d5 | 3057 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3058 | { |
714835d5 UW |
3059 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3060 | { | |
3061 | bfd *abfd = section->objfile->obfd; | |
3062 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3063 | |
714835d5 UW |
3064 | return pc + bfd_section_vma (abfd, bfd_section) |
3065 | - bfd_section_lma (abfd, bfd_section); | |
3066 | } | |
c906108c SS |
3067 | |
3068 | return pc; | |
3069 | } | |
3070 | ||
5417f6dc | 3071 | /* Function: symbol_overlayed_address |
c906108c SS |
3072 | Return one of two addresses (relative to the VMA or to the LMA), |
3073 | depending on whether the section is mapped or not. */ | |
3074 | ||
c5aa993b | 3075 | CORE_ADDR |
714835d5 | 3076 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3077 | { |
3078 | if (overlay_debugging) | |
3079 | { | |
c378eb4e | 3080 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3081 | if (section == 0) |
3082 | return address; | |
c378eb4e MS |
3083 | /* If the symbol's section is not an overlay, just return its |
3084 | address. */ | |
c906108c SS |
3085 | if (!section_is_overlay (section)) |
3086 | return address; | |
c378eb4e | 3087 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3088 | if (section_is_mapped (section)) |
3089 | return address; | |
3090 | /* | |
3091 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3092 | * then return its LOADED address rather than its vma address!! | |
3093 | */ | |
3094 | return overlay_unmapped_address (address, section); | |
3095 | } | |
3096 | return address; | |
3097 | } | |
3098 | ||
5417f6dc | 3099 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3100 | Return the best-match overlay section for PC: |
3101 | If PC matches a mapped overlay section's VMA, return that section. | |
3102 | Else if PC matches an unmapped section's VMA, return that section. | |
3103 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3104 | ||
714835d5 | 3105 | struct obj_section * |
fba45db2 | 3106 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3107 | { |
c5aa993b | 3108 | struct objfile *objfile; |
c906108c SS |
3109 | struct obj_section *osect, *best_match = NULL; |
3110 | ||
3111 | if (overlay_debugging) | |
3112 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3113 | if (section_is_overlay (osect)) |
c5aa993b | 3114 | { |
714835d5 | 3115 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3116 | { |
714835d5 UW |
3117 | if (section_is_mapped (osect)) |
3118 | return osect; | |
c5aa993b JM |
3119 | else |
3120 | best_match = osect; | |
3121 | } | |
714835d5 | 3122 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3123 | best_match = osect; |
3124 | } | |
714835d5 | 3125 | return best_match; |
c906108c SS |
3126 | } |
3127 | ||
3128 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3129 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3130 | currently marked as MAPPED, return that section. Else return NULL. */ |
3131 | ||
714835d5 | 3132 | struct obj_section * |
fba45db2 | 3133 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3134 | { |
c5aa993b | 3135 | struct objfile *objfile; |
c906108c SS |
3136 | struct obj_section *osect; |
3137 | ||
3138 | if (overlay_debugging) | |
3139 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3140 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3141 | return osect; | |
c906108c SS |
3142 | |
3143 | return NULL; | |
3144 | } | |
3145 | ||
3146 | /* Function: list_overlays_command | |
c378eb4e | 3147 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3148 | |
5d3055ad | 3149 | static void |
fba45db2 | 3150 | list_overlays_command (char *args, int from_tty) |
c906108c | 3151 | { |
c5aa993b JM |
3152 | int nmapped = 0; |
3153 | struct objfile *objfile; | |
c906108c SS |
3154 | struct obj_section *osect; |
3155 | ||
3156 | if (overlay_debugging) | |
3157 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3158 | if (section_is_mapped (osect)) |
c5aa993b | 3159 | { |
5af949e3 | 3160 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3161 | const char *name; |
3162 | bfd_vma lma, vma; | |
3163 | int size; | |
3164 | ||
3165 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3166 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3167 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3168 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3169 | ||
3170 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3171 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3172 | puts_filtered (" - "); |
5af949e3 | 3173 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3174 | printf_filtered (", mapped at "); |
5af949e3 | 3175 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3176 | puts_filtered (" - "); |
5af949e3 | 3177 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3178 | puts_filtered ("\n"); |
3179 | ||
3180 | nmapped++; | |
3181 | } | |
c906108c | 3182 | if (nmapped == 0) |
a3f17187 | 3183 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3184 | } |
3185 | ||
3186 | /* Function: map_overlay_command | |
3187 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3188 | ||
5d3055ad | 3189 | static void |
fba45db2 | 3190 | map_overlay_command (char *args, int from_tty) |
c906108c | 3191 | { |
c5aa993b JM |
3192 | struct objfile *objfile, *objfile2; |
3193 | struct obj_section *sec, *sec2; | |
c906108c SS |
3194 | |
3195 | if (!overlay_debugging) | |
3e43a32a MS |
3196 | error (_("Overlay debugging not enabled. Use " |
3197 | "either the 'overlay auto' or\n" | |
3198 | "the 'overlay manual' command.")); | |
c906108c SS |
3199 | |
3200 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3201 | error (_("Argument required: name of an overlay section")); |
c906108c | 3202 | |
c378eb4e | 3203 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3204 | ALL_OBJSECTIONS (objfile, sec) |
3205 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3206 | { |
c378eb4e | 3207 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3208 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3209 | continue; /* not an overlay section */ |
3210 | ||
c378eb4e | 3211 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3212 | sec->ovly_mapped = 1; |
3213 | ||
3214 | /* Next, make a pass and unmap any sections that are | |
3215 | overlapped by this new section: */ | |
3216 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3217 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3218 | { |
3219 | if (info_verbose) | |
a3f17187 | 3220 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3221 | bfd_section_name (objfile->obfd, |
3222 | sec2->the_bfd_section)); | |
c378eb4e | 3223 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3224 | } |
3225 | return; | |
3226 | } | |
8a3fe4f8 | 3227 | error (_("No overlay section called %s"), args); |
c906108c SS |
3228 | } |
3229 | ||
3230 | /* Function: unmap_overlay_command | |
5417f6dc | 3231 | Mark the overlay section as unmapped |
c906108c SS |
3232 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3233 | ||
5d3055ad | 3234 | static void |
fba45db2 | 3235 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3236 | { |
c5aa993b | 3237 | struct objfile *objfile; |
c906108c SS |
3238 | struct obj_section *sec; |
3239 | ||
3240 | if (!overlay_debugging) | |
3e43a32a MS |
3241 | error (_("Overlay debugging not enabled. " |
3242 | "Use either the 'overlay auto' or\n" | |
3243 | "the 'overlay manual' command.")); | |
c906108c SS |
3244 | |
3245 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3246 | error (_("Argument required: name of an overlay section")); |
c906108c | 3247 | |
c378eb4e | 3248 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3249 | ALL_OBJSECTIONS (objfile, sec) |
3250 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3251 | { |
3252 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3253 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3254 | sec->ovly_mapped = 0; |
3255 | return; | |
3256 | } | |
8a3fe4f8 | 3257 | error (_("No overlay section called %s"), args); |
c906108c SS |
3258 | } |
3259 | ||
3260 | /* Function: overlay_auto_command | |
3261 | A utility command to turn on overlay debugging. | |
c378eb4e | 3262 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3263 | |
3264 | static void | |
fba45db2 | 3265 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3266 | { |
d874f1e2 | 3267 | overlay_debugging = ovly_auto; |
1900040c | 3268 | enable_overlay_breakpoints (); |
c906108c | 3269 | if (info_verbose) |
a3f17187 | 3270 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3271 | } |
3272 | ||
3273 | /* Function: overlay_manual_command | |
3274 | A utility command to turn on overlay debugging. | |
c378eb4e | 3275 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3276 | |
3277 | static void | |
fba45db2 | 3278 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3279 | { |
d874f1e2 | 3280 | overlay_debugging = ovly_on; |
1900040c | 3281 | disable_overlay_breakpoints (); |
c906108c | 3282 | if (info_verbose) |
a3f17187 | 3283 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3284 | } |
3285 | ||
3286 | /* Function: overlay_off_command | |
3287 | A utility command to turn on overlay debugging. | |
c378eb4e | 3288 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3289 | |
3290 | static void | |
fba45db2 | 3291 | overlay_off_command (char *args, int from_tty) |
c906108c | 3292 | { |
d874f1e2 | 3293 | overlay_debugging = ovly_off; |
1900040c | 3294 | disable_overlay_breakpoints (); |
c906108c | 3295 | if (info_verbose) |
a3f17187 | 3296 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3297 | } |
3298 | ||
3299 | static void | |
fba45db2 | 3300 | overlay_load_command (char *args, int from_tty) |
c906108c | 3301 | { |
e17c207e UW |
3302 | struct gdbarch *gdbarch = get_current_arch (); |
3303 | ||
3304 | if (gdbarch_overlay_update_p (gdbarch)) | |
3305 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3306 | else |
8a3fe4f8 | 3307 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3308 | } |
3309 | ||
3310 | /* Function: overlay_command | |
c378eb4e | 3311 | A place-holder for a mis-typed command. */ |
c906108c | 3312 | |
c378eb4e | 3313 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3314 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3315 | |
3316 | static void | |
fba45db2 | 3317 | overlay_command (char *args, int from_tty) |
c906108c | 3318 | { |
c5aa993b | 3319 | printf_unfiltered |
c906108c SS |
3320 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3321 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3322 | } | |
3323 | ||
c906108c SS |
3324 | /* Target Overlays for the "Simplest" overlay manager: |
3325 | ||
5417f6dc RM |
3326 | This is GDB's default target overlay layer. It works with the |
3327 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3328 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3329 | so targets that use a different runtime overlay manager can |
c906108c SS |
3330 | substitute their own overlay_update function and take over the |
3331 | function pointer. | |
3332 | ||
3333 | The overlay_update function pokes around in the target's data structures | |
3334 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3335 | this information. | |
3336 | ||
3337 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3338 | unsigned _novlys; /# number of overlay sections #/ |
3339 | unsigned _ovly_table[_novlys][4] = { | |
3340 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3341 | {..., ..., ..., ...}, | |
3342 | } | |
3343 | unsigned _novly_regions; /# number of overlay regions #/ | |
3344 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3345 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3346 | {..., ..., ...}, | |
3347 | } | |
c906108c SS |
3348 | These functions will attempt to update GDB's mappedness state in the |
3349 | symbol section table, based on the target's mappedness state. | |
3350 | ||
3351 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3352 | attempt to detect when the cached copy is invalidated. The main | |
3353 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3354 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3355 | the target (whenever possible). */ |
c906108c SS |
3356 | |
3357 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3358 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3359 | static unsigned cache_novlys = 0; |
c906108c | 3360 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3361 | enum ovly_index |
3362 | { | |
3363 | VMA, SIZE, LMA, MAPPED | |
3364 | }; | |
c906108c | 3365 | |
c378eb4e | 3366 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3367 | |
c906108c | 3368 | static void |
fba45db2 | 3369 | simple_free_overlay_table (void) |
c906108c SS |
3370 | { |
3371 | if (cache_ovly_table) | |
b8c9b27d | 3372 | xfree (cache_ovly_table); |
c5aa993b | 3373 | cache_novlys = 0; |
c906108c SS |
3374 | cache_ovly_table = NULL; |
3375 | cache_ovly_table_base = 0; | |
3376 | } | |
3377 | ||
9216df95 | 3378 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3379 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3380 | |
c906108c | 3381 | static void |
9216df95 | 3382 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3383 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3384 | { |
c378eb4e | 3385 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3386 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3387 | int i; |
c906108c | 3388 | |
9216df95 | 3389 | read_memory (memaddr, buf, len * size); |
c906108c | 3390 | for (i = 0; i < len; i++) |
e17a4113 | 3391 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3392 | } |
3393 | ||
3394 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3395 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3396 | |
c5aa993b | 3397 | static int |
fba45db2 | 3398 | simple_read_overlay_table (void) |
c906108c | 3399 | { |
0d43edd1 | 3400 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3401 | struct gdbarch *gdbarch; |
3402 | int word_size; | |
e17a4113 | 3403 | enum bfd_endian byte_order; |
c906108c SS |
3404 | |
3405 | simple_free_overlay_table (); | |
9b27852e | 3406 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3407 | if (! novlys_msym) |
c906108c | 3408 | { |
8a3fe4f8 | 3409 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3410 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3411 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3412 | return 0; |
c906108c | 3413 | } |
0d43edd1 | 3414 | |
9b27852e | 3415 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3416 | if (! ovly_table_msym) |
3417 | { | |
8a3fe4f8 | 3418 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3419 | "`_ovly_table' array\n" |
8a3fe4f8 | 3420 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3421 | return 0; |
3422 | } | |
3423 | ||
9216df95 UW |
3424 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3425 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3426 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3427 | |
e17a4113 UW |
3428 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3429 | 4, byte_order); | |
0d43edd1 JB |
3430 | cache_ovly_table |
3431 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3432 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3433 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3434 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3435 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3436 | |
c5aa993b | 3437 | return 1; /* SUCCESS */ |
c906108c SS |
3438 | } |
3439 | ||
5417f6dc | 3440 | /* Function: simple_overlay_update_1 |
c906108c SS |
3441 | A helper function for simple_overlay_update. Assuming a cached copy |
3442 | of _ovly_table exists, look through it to find an entry whose vma, | |
3443 | lma and size match those of OSECT. Re-read the entry and make sure | |
3444 | it still matches OSECT (else the table may no longer be valid). | |
3445 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3446 | success, 0 for failure. */ | |
3447 | ||
3448 | static int | |
fba45db2 | 3449 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3450 | { |
3451 | int i, size; | |
fbd35540 MS |
3452 | bfd *obfd = osect->objfile->obfd; |
3453 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3454 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3455 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3456 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3457 | |
2c500098 | 3458 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3459 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3460 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3461 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3462 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3463 | { |
9216df95 UW |
3464 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3465 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3466 | 4, word_size, byte_order); |
fbd35540 MS |
3467 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3468 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3469 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3470 | { |
3471 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3472 | return 1; | |
3473 | } | |
c378eb4e | 3474 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3475 | return 0; |
3476 | } | |
3477 | return 0; | |
3478 | } | |
3479 | ||
3480 | /* Function: simple_overlay_update | |
5417f6dc RM |
3481 | If OSECT is NULL, then update all sections' mapped state |
3482 | (after re-reading the entire target _ovly_table). | |
3483 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3484 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3485 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3486 | re-read the entire cache, and go ahead and update all sections. */ |
3487 | ||
1c772458 | 3488 | void |
fba45db2 | 3489 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3490 | { |
c5aa993b | 3491 | struct objfile *objfile; |
c906108c | 3492 | |
c378eb4e | 3493 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3494 | if (osect) |
c378eb4e | 3495 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3496 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3497 | { |
3498 | /* Does its cached location match what's currently in the | |
3499 | symtab? */ | |
3500 | struct minimal_symbol *minsym | |
3501 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3502 | ||
3503 | if (minsym == NULL) | |
3504 | error (_("Error reading inferior's overlay table: couldn't " | |
3505 | "find `_ovly_table' array\n" | |
3506 | "in inferior. Use `overlay manual' mode.")); | |
3507 | ||
3508 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3509 | /* Then go ahead and try to look up this single section in | |
3510 | the cache. */ | |
3511 | if (simple_overlay_update_1 (osect)) | |
3512 | /* Found it! We're done. */ | |
3513 | return; | |
3514 | } | |
c906108c SS |
3515 | |
3516 | /* Cached table no good: need to read the entire table anew. | |
3517 | Or else we want all the sections, in which case it's actually | |
3518 | more efficient to read the whole table in one block anyway. */ | |
3519 | ||
0d43edd1 JB |
3520 | if (! simple_read_overlay_table ()) |
3521 | return; | |
3522 | ||
c378eb4e | 3523 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3524 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3525 | if (section_is_overlay (osect)) |
c5aa993b JM |
3526 | { |
3527 | int i, size; | |
fbd35540 MS |
3528 | bfd *obfd = osect->objfile->obfd; |
3529 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3530 | |
2c500098 | 3531 | size = bfd_get_section_size (bsect); |
c5aa993b | 3532 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3533 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3534 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3535 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3536 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3537 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3538 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3539 | } |
3540 | } | |
c906108c SS |
3541 | } |
3542 | ||
086df311 DJ |
3543 | /* Set the output sections and output offsets for section SECTP in |
3544 | ABFD. The relocation code in BFD will read these offsets, so we | |
3545 | need to be sure they're initialized. We map each section to itself, | |
3546 | with no offset; this means that SECTP->vma will be honored. */ | |
3547 | ||
3548 | static void | |
3549 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3550 | { | |
3551 | sectp->output_section = sectp; | |
3552 | sectp->output_offset = 0; | |
3553 | } | |
3554 | ||
ac8035ab TG |
3555 | /* Default implementation for sym_relocate. */ |
3556 | ||
ac8035ab TG |
3557 | bfd_byte * |
3558 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3559 | bfd_byte *buf) | |
3560 | { | |
3019eac3 DE |
3561 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3562 | DWO file. */ | |
3563 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3564 | |
3565 | /* We're only interested in sections with relocation | |
3566 | information. */ | |
3567 | if ((sectp->flags & SEC_RELOC) == 0) | |
3568 | return NULL; | |
3569 | ||
3570 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3571 | all sections begin at 0. */ | |
3572 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3573 | ||
3574 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3575 | } | |
3576 | ||
086df311 DJ |
3577 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3578 | contents are stored in BUF if it is non-NULL, or returned in a | |
3579 | malloc'd buffer otherwise. | |
3580 | ||
3581 | For some platforms and debug info formats, shared libraries contain | |
3582 | relocations against the debug sections (particularly for DWARF-2; | |
3583 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3584 | the version of the linker in use). Also, ELF object files naturally | |
3585 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3586 | the relocations in order to get the locations of symbols correct. |
3587 | Another example that may require relocation processing, is the | |
3588 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3589 | debug section. */ | |
086df311 DJ |
3590 | |
3591 | bfd_byte * | |
ac8035ab TG |
3592 | symfile_relocate_debug_section (struct objfile *objfile, |
3593 | asection *sectp, bfd_byte *buf) | |
086df311 | 3594 | { |
ac8035ab | 3595 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3596 | |
ac8035ab | 3597 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3598 | } |
c906108c | 3599 | |
31d99776 DJ |
3600 | struct symfile_segment_data * |
3601 | get_symfile_segment_data (bfd *abfd) | |
3602 | { | |
00b5771c | 3603 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3604 | |
3605 | if (sf == NULL) | |
3606 | return NULL; | |
3607 | ||
3608 | return sf->sym_segments (abfd); | |
3609 | } | |
3610 | ||
3611 | void | |
3612 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3613 | { | |
3614 | xfree (data->segment_bases); | |
3615 | xfree (data->segment_sizes); | |
3616 | xfree (data->segment_info); | |
3617 | xfree (data); | |
3618 | } | |
3619 | ||
28c32713 JB |
3620 | /* Given: |
3621 | - DATA, containing segment addresses from the object file ABFD, and | |
3622 | the mapping from ABFD's sections onto the segments that own them, | |
3623 | and | |
3624 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3625 | segment addresses reported by the target, | |
3626 | store the appropriate offsets for each section in OFFSETS. | |
3627 | ||
3628 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3629 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3630 | ||
8d385431 DJ |
3631 | If there are more entries, then ignore the extra. The target may |
3632 | not be able to distinguish between an empty data segment and a | |
3633 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3634 | |
31d99776 | 3635 | int |
3189cb12 DE |
3636 | symfile_map_offsets_to_segments (bfd *abfd, |
3637 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3638 | struct section_offsets *offsets, |
3639 | int num_segment_bases, | |
3640 | const CORE_ADDR *segment_bases) | |
3641 | { | |
3642 | int i; | |
3643 | asection *sect; | |
3644 | ||
28c32713 JB |
3645 | /* It doesn't make sense to call this function unless you have some |
3646 | segment base addresses. */ | |
202b96c1 | 3647 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3648 | |
31d99776 DJ |
3649 | /* If we do not have segment mappings for the object file, we |
3650 | can not relocate it by segments. */ | |
3651 | gdb_assert (data != NULL); | |
3652 | gdb_assert (data->num_segments > 0); | |
3653 | ||
31d99776 DJ |
3654 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3655 | { | |
31d99776 DJ |
3656 | int which = data->segment_info[i]; |
3657 | ||
28c32713 JB |
3658 | gdb_assert (0 <= which && which <= data->num_segments); |
3659 | ||
3660 | /* Don't bother computing offsets for sections that aren't | |
3661 | loaded as part of any segment. */ | |
3662 | if (! which) | |
3663 | continue; | |
3664 | ||
3665 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3666 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3667 | if (which > num_segment_bases) |
28c32713 | 3668 | which = num_segment_bases; |
31d99776 | 3669 | |
28c32713 JB |
3670 | offsets->offsets[i] = (segment_bases[which - 1] |
3671 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3672 | } |
3673 | ||
3674 | return 1; | |
3675 | } | |
3676 | ||
3677 | static void | |
3678 | symfile_find_segment_sections (struct objfile *objfile) | |
3679 | { | |
3680 | bfd *abfd = objfile->obfd; | |
3681 | int i; | |
3682 | asection *sect; | |
3683 | struct symfile_segment_data *data; | |
3684 | ||
3685 | data = get_symfile_segment_data (objfile->obfd); | |
3686 | if (data == NULL) | |
3687 | return; | |
3688 | ||
3689 | if (data->num_segments != 1 && data->num_segments != 2) | |
3690 | { | |
3691 | free_symfile_segment_data (data); | |
3692 | return; | |
3693 | } | |
3694 | ||
3695 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3696 | { | |
31d99776 DJ |
3697 | int which = data->segment_info[i]; |
3698 | ||
3699 | if (which == 1) | |
3700 | { | |
3701 | if (objfile->sect_index_text == -1) | |
3702 | objfile->sect_index_text = sect->index; | |
3703 | ||
3704 | if (objfile->sect_index_rodata == -1) | |
3705 | objfile->sect_index_rodata = sect->index; | |
3706 | } | |
3707 | else if (which == 2) | |
3708 | { | |
3709 | if (objfile->sect_index_data == -1) | |
3710 | objfile->sect_index_data = sect->index; | |
3711 | ||
3712 | if (objfile->sect_index_bss == -1) | |
3713 | objfile->sect_index_bss = sect->index; | |
3714 | } | |
3715 | } | |
3716 | ||
3717 | free_symfile_segment_data (data); | |
3718 | } | |
3719 | ||
c906108c | 3720 | void |
fba45db2 | 3721 | _initialize_symfile (void) |
c906108c SS |
3722 | { |
3723 | struct cmd_list_element *c; | |
c5aa993b | 3724 | |
1a966eab AC |
3725 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3726 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3727 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3728 | to execute."), &cmdlist); |
5ba2abeb | 3729 | set_cmd_completer (c, filename_completer); |
c906108c | 3730 | |
1a966eab | 3731 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3732 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3733 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3734 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3735 | The optional arguments are section-name section-address pairs and\n\ |
3736 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3737 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3738 | &cmdlist); |
5ba2abeb | 3739 | set_cmd_completer (c, filename_completer); |
c906108c | 3740 | |
1a966eab AC |
3741 | c = add_cmd ("load", class_files, load_command, _("\ |
3742 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3743 | for access from GDB.\n\ |
3744 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3745 | set_cmd_completer (c, filename_completer); |
c906108c | 3746 | |
c5aa993b | 3747 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3748 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3749 | "overlay ", 0, &cmdlist); |
3750 | ||
3751 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3752 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3753 | ||
c5aa993b | 3754 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3755 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3756 | |
c5aa993b | 3757 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3758 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3759 | |
c5aa993b | 3760 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3761 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3762 | |
c5aa993b | 3763 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3764 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3765 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3766 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3767 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3768 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3769 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3770 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3771 | |
3772 | /* Filename extension to source language lookup table: */ | |
3773 | init_filename_language_table (); | |
26c41df3 AC |
3774 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3775 | &ext_args, _("\ | |
3776 | Set mapping between filename extension and source language."), _("\ | |
3777 | Show mapping between filename extension and source language."), _("\ | |
3778 | Usage: set extension-language .foo bar"), | |
3779 | set_ext_lang_command, | |
920d2a44 | 3780 | show_ext_args, |
26c41df3 | 3781 | &setlist, &showlist); |
c906108c | 3782 | |
c5aa993b | 3783 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3784 | _("All filename extensions associated with a source language.")); |
917317f4 | 3785 | |
525226b5 AC |
3786 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3787 | &debug_file_directory, _("\ | |
24ddea62 JK |
3788 | Set the directories where separate debug symbols are searched for."), _("\ |
3789 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3790 | Separate debug symbols are first searched for in the same\n\ |
3791 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3792 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3793 | each global debug-file-directory component prepended."), |
525226b5 | 3794 | NULL, |
920d2a44 | 3795 | show_debug_file_directory, |
525226b5 | 3796 | &setlist, &showlist); |
c906108c | 3797 | } |