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--; | |
163 | } | |
164 | ||
ccefe4c4 TT |
165 | /* Increment currently_reading_symtab and return a cleanup that can be |
166 | used to decrement it. */ | |
167 | struct cleanup * | |
168 | increment_reading_symtab (void) | |
c906108c | 169 | { |
ccefe4c4 TT |
170 | ++currently_reading_symtab; |
171 | return make_cleanup (decrement_reading_symtab, NULL); | |
c906108c SS |
172 | } |
173 | ||
5417f6dc RM |
174 | /* Remember the lowest-addressed loadable section we've seen. |
175 | This function is called via bfd_map_over_sections. | |
c906108c SS |
176 | |
177 | In case of equal vmas, the section with the largest size becomes the | |
178 | lowest-addressed loadable section. | |
179 | ||
180 | If the vmas and sizes are equal, the last section is considered the | |
181 | lowest-addressed loadable section. */ | |
182 | ||
183 | void | |
4efb68b1 | 184 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 185 | { |
c5aa993b | 186 | asection **lowest = (asection **) obj; |
c906108c | 187 | |
eb73e134 | 188 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
189 | return; |
190 | if (!*lowest) | |
191 | *lowest = sect; /* First loadable section */ | |
192 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
193 | *lowest = sect; /* A lower loadable section */ | |
194 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
195 | && (bfd_section_size (abfd, (*lowest)) | |
196 | <= bfd_section_size (abfd, sect))) | |
197 | *lowest = sect; | |
198 | } | |
199 | ||
d76488d8 TT |
200 | /* Create a new section_addr_info, with room for NUM_SECTIONS. The |
201 | new object's 'num_sections' field is set to 0; it must be updated | |
202 | by the caller. */ | |
a39a16c4 MM |
203 | |
204 | struct section_addr_info * | |
205 | alloc_section_addr_info (size_t num_sections) | |
206 | { | |
207 | struct section_addr_info *sap; | |
208 | size_t size; | |
209 | ||
210 | size = (sizeof (struct section_addr_info) | |
211 | + sizeof (struct other_sections) * (num_sections - 1)); | |
212 | sap = (struct section_addr_info *) xmalloc (size); | |
213 | memset (sap, 0, size); | |
a39a16c4 MM |
214 | |
215 | return sap; | |
216 | } | |
62557bbc KB |
217 | |
218 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 219 | an existing section table. */ |
62557bbc KB |
220 | |
221 | extern struct section_addr_info * | |
0542c86d PA |
222 | build_section_addr_info_from_section_table (const struct target_section *start, |
223 | const struct target_section *end) | |
62557bbc KB |
224 | { |
225 | struct section_addr_info *sap; | |
0542c86d | 226 | const struct target_section *stp; |
62557bbc KB |
227 | int oidx; |
228 | ||
a39a16c4 | 229 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
230 | |
231 | for (stp = start, oidx = 0; stp != end; stp++) | |
232 | { | |
5417f6dc | 233 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 234 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 235 | && oidx < end - start) |
62557bbc KB |
236 | { |
237 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 238 | sap->other[oidx].name |
fbd35540 | 239 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
65cf3563 TT |
240 | sap->other[oidx].sectindex |
241 | = gdb_bfd_section_index (stp->bfd, stp->the_bfd_section); | |
62557bbc KB |
242 | oidx++; |
243 | } | |
244 | } | |
245 | ||
d76488d8 TT |
246 | sap->num_sections = oidx; |
247 | ||
62557bbc KB |
248 | return sap; |
249 | } | |
250 | ||
82ccf5a5 | 251 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 252 | |
82ccf5a5 JK |
253 | static struct section_addr_info * |
254 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
255 | { |
256 | struct section_addr_info *sap; | |
257 | int i; | |
258 | struct bfd_section *sec; | |
259 | ||
82ccf5a5 JK |
260 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
261 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
262 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 263 | { |
82ccf5a5 JK |
264 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
265 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
65cf3563 | 266 | sap->other[i].sectindex = gdb_bfd_section_index (abfd, sec); |
012836ea JK |
267 | i++; |
268 | } | |
d76488d8 TT |
269 | |
270 | sap->num_sections = i; | |
271 | ||
089b4803 TG |
272 | return sap; |
273 | } | |
274 | ||
82ccf5a5 JK |
275 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
276 | ||
277 | struct section_addr_info * | |
278 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
279 | { | |
280 | struct section_addr_info *sap; | |
281 | int i; | |
282 | ||
283 | /* Before reread_symbols gets rewritten it is not safe to call: | |
284 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
285 | */ | |
286 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
d76488d8 | 287 | for (i = 0; i < sap->num_sections; i++) |
82ccf5a5 JK |
288 | { |
289 | int sectindex = sap->other[i].sectindex; | |
290 | ||
291 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
292 | } | |
293 | return sap; | |
294 | } | |
62557bbc | 295 | |
c378eb4e | 296 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
297 | |
298 | extern void | |
299 | free_section_addr_info (struct section_addr_info *sap) | |
300 | { | |
301 | int idx; | |
302 | ||
a39a16c4 | 303 | for (idx = 0; idx < sap->num_sections; idx++) |
d76488d8 | 304 | xfree (sap->other[idx].name); |
b8c9b27d | 305 | xfree (sap); |
62557bbc KB |
306 | } |
307 | ||
308 | ||
e8289572 JB |
309 | /* Initialize OBJFILE's sect_index_* members. */ |
310 | static void | |
311 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 312 | { |
e8289572 | 313 | asection *sect; |
c906108c | 314 | int i; |
5417f6dc | 315 | |
b8fbeb18 | 316 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 317 | if (sect) |
b8fbeb18 EZ |
318 | objfile->sect_index_text = sect->index; |
319 | ||
320 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 321 | if (sect) |
b8fbeb18 EZ |
322 | objfile->sect_index_data = sect->index; |
323 | ||
324 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 325 | if (sect) |
b8fbeb18 EZ |
326 | objfile->sect_index_bss = sect->index; |
327 | ||
328 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 329 | if (sect) |
b8fbeb18 EZ |
330 | objfile->sect_index_rodata = sect->index; |
331 | ||
bbcd32ad FF |
332 | /* This is where things get really weird... We MUST have valid |
333 | indices for the various sect_index_* members or gdb will abort. | |
334 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
335 | accomodate that. First, check for a file with the standard |
336 | one or two segments. */ | |
337 | ||
338 | symfile_find_segment_sections (objfile); | |
339 | ||
340 | /* Except when explicitly adding symbol files at some address, | |
341 | section_offsets contains nothing but zeros, so it doesn't matter | |
342 | which slot in section_offsets the individual sect_index_* members | |
343 | index into. So if they are all zero, it is safe to just point | |
344 | all the currently uninitialized indices to the first slot. But | |
345 | beware: if this is the main executable, it may be relocated | |
346 | later, e.g. by the remote qOffsets packet, and then this will | |
347 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
348 | |
349 | for (i = 0; i < objfile->num_sections; i++) | |
350 | { | |
351 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
352 | { | |
353 | break; | |
354 | } | |
355 | } | |
356 | if (i == objfile->num_sections) | |
357 | { | |
358 | if (objfile->sect_index_text == -1) | |
359 | objfile->sect_index_text = 0; | |
360 | if (objfile->sect_index_data == -1) | |
361 | objfile->sect_index_data = 0; | |
362 | if (objfile->sect_index_bss == -1) | |
363 | objfile->sect_index_bss = 0; | |
364 | if (objfile->sect_index_rodata == -1) | |
365 | objfile->sect_index_rodata = 0; | |
366 | } | |
b8fbeb18 | 367 | } |
c906108c | 368 | |
c1bd25fd DJ |
369 | /* The arguments to place_section. */ |
370 | ||
371 | struct place_section_arg | |
372 | { | |
373 | struct section_offsets *offsets; | |
374 | CORE_ADDR lowest; | |
375 | }; | |
376 | ||
377 | /* Find a unique offset to use for loadable section SECT if | |
378 | the user did not provide an offset. */ | |
379 | ||
2c0b251b | 380 | static void |
c1bd25fd DJ |
381 | place_section (bfd *abfd, asection *sect, void *obj) |
382 | { | |
383 | struct place_section_arg *arg = obj; | |
384 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
385 | int done; | |
3bd72c6f | 386 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 387 | |
2711e456 DJ |
388 | /* We are only interested in allocated sections. */ |
389 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
390 | return; |
391 | ||
392 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 393 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
394 | return; |
395 | ||
396 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
397 | start_addr = (arg->lowest + align - 1) & -align; |
398 | ||
c1bd25fd DJ |
399 | do { |
400 | asection *cur_sec; | |
c1bd25fd | 401 | |
c1bd25fd DJ |
402 | done = 1; |
403 | ||
404 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
405 | { | |
406 | int indx = cur_sec->index; | |
c1bd25fd DJ |
407 | |
408 | /* We don't need to compare against ourself. */ | |
409 | if (cur_sec == sect) | |
410 | continue; | |
411 | ||
2711e456 DJ |
412 | /* We can only conflict with allocated sections. */ |
413 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
414 | continue; |
415 | ||
416 | /* If the section offset is 0, either the section has not been placed | |
417 | yet, or it was the lowest section placed (in which case LOWEST | |
418 | will be past its end). */ | |
419 | if (offsets[indx] == 0) | |
420 | continue; | |
421 | ||
422 | /* If this section would overlap us, then we must move up. */ | |
423 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
424 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
425 | { | |
426 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
427 | start_addr = (start_addr + align - 1) & -align; | |
428 | done = 0; | |
3bd72c6f | 429 | break; |
c1bd25fd DJ |
430 | } |
431 | ||
432 | /* Otherwise, we appear to be OK. So far. */ | |
433 | } | |
434 | } | |
435 | while (!done); | |
436 | ||
65cf3563 | 437 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 438 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 439 | } |
e8289572 | 440 | |
75242ef4 JK |
441 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
442 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
443 | entries. */ | |
e8289572 JB |
444 | |
445 | void | |
75242ef4 JK |
446 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
447 | int num_sections, | |
3189cb12 | 448 | const struct section_addr_info *addrs) |
e8289572 JB |
449 | { |
450 | int i; | |
451 | ||
75242ef4 | 452 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 453 | |
c378eb4e | 454 | /* Now calculate offsets for section that were specified by the caller. */ |
d76488d8 | 455 | for (i = 0; i < addrs->num_sections; i++) |
e8289572 | 456 | { |
3189cb12 | 457 | const struct other_sections *osp; |
e8289572 | 458 | |
75242ef4 | 459 | osp = &addrs->other[i]; |
5488dafb | 460 | if (osp->sectindex == -1) |
e8289572 JB |
461 | continue; |
462 | ||
c378eb4e | 463 | /* Record all sections in offsets. */ |
e8289572 | 464 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 465 | the BFD index. */ |
75242ef4 JK |
466 | section_offsets->offsets[osp->sectindex] = osp->addr; |
467 | } | |
468 | } | |
469 | ||
1276c759 JK |
470 | /* Transform section name S for a name comparison. prelink can split section |
471 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
472 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
473 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
474 | (`.sbss') section has invalid (increased) virtual address. */ | |
475 | ||
476 | static const char * | |
477 | addr_section_name (const char *s) | |
478 | { | |
479 | if (strcmp (s, ".dynbss") == 0) | |
480 | return ".bss"; | |
481 | if (strcmp (s, ".sdynbss") == 0) | |
482 | return ".sbss"; | |
483 | ||
484 | return s; | |
485 | } | |
486 | ||
82ccf5a5 JK |
487 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
488 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
489 | ||
490 | static int | |
491 | addrs_section_compar (const void *ap, const void *bp) | |
492 | { | |
493 | const struct other_sections *a = *((struct other_sections **) ap); | |
494 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 495 | int retval; |
82ccf5a5 | 496 | |
1276c759 | 497 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
498 | if (retval) |
499 | return retval; | |
500 | ||
5488dafb | 501 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
502 | } |
503 | ||
504 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
505 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
506 | ||
507 | static struct other_sections ** | |
508 | addrs_section_sort (struct section_addr_info *addrs) | |
509 | { | |
510 | struct other_sections **array; | |
511 | int i; | |
512 | ||
513 | /* `+ 1' for the NULL terminator. */ | |
514 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
d76488d8 | 515 | for (i = 0; i < addrs->num_sections; i++) |
82ccf5a5 JK |
516 | array[i] = &addrs->other[i]; |
517 | array[i] = NULL; | |
518 | ||
519 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
520 | ||
521 | return array; | |
522 | } | |
523 | ||
75242ef4 | 524 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
525 | also SECTINDEXes specific to ABFD there. This function can be used to |
526 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
527 | |
528 | void | |
529 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
530 | { | |
531 | asection *lower_sect; | |
75242ef4 JK |
532 | CORE_ADDR lower_offset; |
533 | int i; | |
82ccf5a5 JK |
534 | struct cleanup *my_cleanup; |
535 | struct section_addr_info *abfd_addrs; | |
536 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
537 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
538 | |
539 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
540 | continguous sections. */ |
541 | lower_sect = NULL; | |
542 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
543 | if (lower_sect == NULL) |
544 | { | |
545 | warning (_("no loadable sections found in added symbol-file %s"), | |
546 | bfd_get_filename (abfd)); | |
547 | lower_offset = 0; | |
e8289572 | 548 | } |
75242ef4 JK |
549 | else |
550 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
551 | ||
82ccf5a5 JK |
552 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
553 | in ABFD. Section names are not unique - there can be multiple sections of | |
554 | the same name. Also the sections of the same name do not have to be | |
555 | adjacent to each other. Some sections may be present only in one of the | |
556 | files. Even sections present in both files do not have to be in the same | |
557 | order. | |
558 | ||
559 | Use stable sort by name for the sections in both files. Then linearly | |
560 | scan both lists matching as most of the entries as possible. */ | |
561 | ||
562 | addrs_sorted = addrs_section_sort (addrs); | |
563 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
564 | ||
565 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
566 | make_cleanup_free_section_addr_info (abfd_addrs); | |
567 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
568 | make_cleanup (xfree, abfd_addrs_sorted); | |
569 | ||
c378eb4e MS |
570 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
571 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
572 | |
573 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
574 | * addrs->num_sections); | |
575 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
576 | ||
577 | while (*addrs_sorted) | |
578 | { | |
1276c759 | 579 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
580 | |
581 | while (*abfd_addrs_sorted | |
1276c759 JK |
582 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
583 | sect_name) < 0) | |
82ccf5a5 JK |
584 | abfd_addrs_sorted++; |
585 | ||
586 | if (*abfd_addrs_sorted | |
1276c759 JK |
587 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
588 | sect_name) == 0) | |
82ccf5a5 JK |
589 | { |
590 | int index_in_addrs; | |
591 | ||
592 | /* Make the found item directly addressable from ADDRS. */ | |
593 | index_in_addrs = *addrs_sorted - addrs->other; | |
594 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
595 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
596 | ||
597 | /* Never use the same ABFD entry twice. */ | |
598 | abfd_addrs_sorted++; | |
599 | } | |
600 | ||
601 | addrs_sorted++; | |
602 | } | |
603 | ||
75242ef4 JK |
604 | /* Calculate offsets for the loadable sections. |
605 | FIXME! Sections must be in order of increasing loadable section | |
606 | so that contiguous sections can use the lower-offset!!! | |
607 | ||
608 | Adjust offsets if the segments are not contiguous. | |
609 | If the section is contiguous, its offset should be set to | |
610 | the offset of the highest loadable section lower than it | |
611 | (the loadable section directly below it in memory). | |
612 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
613 | ||
d76488d8 | 614 | for (i = 0; i < addrs->num_sections; i++) |
75242ef4 | 615 | { |
82ccf5a5 | 616 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
617 | |
618 | if (sect) | |
75242ef4 | 619 | { |
c378eb4e | 620 | /* This is the index used by BFD. */ |
82ccf5a5 | 621 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
622 | |
623 | if (addrs->other[i].addr != 0) | |
75242ef4 | 624 | { |
82ccf5a5 | 625 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 626 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
627 | } |
628 | else | |
672d9c23 | 629 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
630 | } |
631 | else | |
672d9c23 | 632 | { |
1276c759 JK |
633 | /* addr_section_name transformation is not used for SECT_NAME. */ |
634 | const char *sect_name = addrs->other[i].name; | |
635 | ||
b0fcb67f JK |
636 | /* This section does not exist in ABFD, which is normally |
637 | unexpected and we want to issue a warning. | |
638 | ||
4d9743af JK |
639 | However, the ELF prelinker does create a few sections which are |
640 | marked in the main executable as loadable (they are loaded in | |
641 | memory from the DYNAMIC segment) and yet are not present in | |
642 | separate debug info files. This is fine, and should not cause | |
643 | a warning. Shared libraries contain just the section | |
644 | ".gnu.liblist" but it is not marked as loadable there. There is | |
645 | no other way to identify them than by their name as the sections | |
1276c759 JK |
646 | created by prelink have no special flags. |
647 | ||
648 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
649 | |
650 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 651 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
652 | || (strcmp (sect_name, ".bss") == 0 |
653 | && i > 0 | |
654 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
655 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
656 | || (strcmp (sect_name, ".sbss") == 0 | |
657 | && i > 0 | |
658 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
659 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
660 | warning (_("section %s not found in %s"), sect_name, |
661 | bfd_get_filename (abfd)); | |
662 | ||
672d9c23 | 663 | addrs->other[i].addr = 0; |
5488dafb | 664 | addrs->other[i].sectindex = -1; |
672d9c23 | 665 | } |
75242ef4 | 666 | } |
82ccf5a5 JK |
667 | |
668 | do_cleanups (my_cleanup); | |
75242ef4 JK |
669 | } |
670 | ||
671 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
672 | of how to represent it for fast symbol reading. This is the default | |
673 | version of the sym_fns.sym_offsets function for symbol readers that | |
674 | don't need to do anything special. It allocates a section_offsets table | |
675 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
676 | ||
677 | void | |
678 | default_symfile_offsets (struct objfile *objfile, | |
3189cb12 | 679 | const struct section_addr_info *addrs) |
75242ef4 | 680 | { |
d445b2f6 | 681 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
682 | objfile->section_offsets = (struct section_offsets *) |
683 | obstack_alloc (&objfile->objfile_obstack, | |
684 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
685 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
686 | objfile->num_sections, addrs); | |
e8289572 | 687 | |
c1bd25fd DJ |
688 | /* For relocatable files, all loadable sections will start at zero. |
689 | The zero is meaningless, so try to pick arbitrary addresses such | |
690 | that no loadable sections overlap. This algorithm is quadratic, | |
691 | but the number of sections in a single object file is generally | |
692 | small. */ | |
693 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
694 | { | |
695 | struct place_section_arg arg; | |
2711e456 DJ |
696 | bfd *abfd = objfile->obfd; |
697 | asection *cur_sec; | |
2711e456 DJ |
698 | |
699 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
700 | /* We do not expect this to happen; just skip this step if the | |
701 | relocatable file has a section with an assigned VMA. */ | |
702 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
703 | break; | |
704 | ||
705 | if (cur_sec == NULL) | |
706 | { | |
707 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
708 | ||
709 | /* Pick non-overlapping offsets for sections the user did not | |
710 | place explicitly. */ | |
711 | arg.offsets = objfile->section_offsets; | |
712 | arg.lowest = 0; | |
713 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
714 | ||
715 | /* Correctly filling in the section offsets is not quite | |
716 | enough. Relocatable files have two properties that | |
717 | (most) shared objects do not: | |
718 | ||
719 | - Their debug information will contain relocations. Some | |
720 | shared libraries do also, but many do not, so this can not | |
721 | be assumed. | |
722 | ||
723 | - If there are multiple code sections they will be loaded | |
724 | at different relative addresses in memory than they are | |
725 | in the objfile, since all sections in the file will start | |
726 | at address zero. | |
727 | ||
728 | Because GDB has very limited ability to map from an | |
729 | address in debug info to the correct code section, | |
730 | it relies on adding SECT_OFF_TEXT to things which might be | |
731 | code. If we clear all the section offsets, and set the | |
732 | section VMAs instead, then symfile_relocate_debug_section | |
733 | will return meaningful debug information pointing at the | |
734 | correct sections. | |
735 | ||
736 | GDB has too many different data structures for section | |
737 | addresses - a bfd, objfile, and so_list all have section | |
738 | tables, as does exec_ops. Some of these could probably | |
739 | be eliminated. */ | |
740 | ||
741 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
742 | cur_sec = cur_sec->next) | |
743 | { | |
744 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
745 | continue; | |
746 | ||
747 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
748 | exec_set_section_address (bfd_get_filename (abfd), |
749 | cur_sec->index, | |
30510692 | 750 | offsets[cur_sec->index]); |
2711e456 DJ |
751 | offsets[cur_sec->index] = 0; |
752 | } | |
753 | } | |
c1bd25fd DJ |
754 | } |
755 | ||
e8289572 | 756 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 757 | .rodata sections. */ |
e8289572 JB |
758 | init_objfile_sect_indices (objfile); |
759 | } | |
760 | ||
761 | ||
31d99776 DJ |
762 | /* Divide the file into segments, which are individual relocatable units. |
763 | This is the default version of the sym_fns.sym_segments function for | |
764 | symbol readers that do not have an explicit representation of segments. | |
765 | It assumes that object files do not have segments, and fully linked | |
766 | files have a single segment. */ | |
767 | ||
768 | struct symfile_segment_data * | |
769 | default_symfile_segments (bfd *abfd) | |
770 | { | |
771 | int num_sections, i; | |
772 | asection *sect; | |
773 | struct symfile_segment_data *data; | |
774 | CORE_ADDR low, high; | |
775 | ||
776 | /* Relocatable files contain enough information to position each | |
777 | loadable section independently; they should not be relocated | |
778 | in segments. */ | |
779 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
780 | return NULL; | |
781 | ||
782 | /* Make sure there is at least one loadable section in the file. */ | |
783 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
784 | { | |
785 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
786 | continue; | |
787 | ||
788 | break; | |
789 | } | |
790 | if (sect == NULL) | |
791 | return NULL; | |
792 | ||
793 | low = bfd_get_section_vma (abfd, sect); | |
794 | high = low + bfd_get_section_size (sect); | |
795 | ||
796 | data = XZALLOC (struct symfile_segment_data); | |
797 | data->num_segments = 1; | |
798 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
799 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
800 | ||
801 | num_sections = bfd_count_sections (abfd); | |
802 | data->segment_info = XCALLOC (num_sections, int); | |
803 | ||
804 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
805 | { | |
806 | CORE_ADDR vma; | |
807 | ||
808 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
809 | continue; | |
810 | ||
811 | vma = bfd_get_section_vma (abfd, sect); | |
812 | if (vma < low) | |
813 | low = vma; | |
814 | if (vma + bfd_get_section_size (sect) > high) | |
815 | high = vma + bfd_get_section_size (sect); | |
816 | ||
817 | data->segment_info[i] = 1; | |
818 | } | |
819 | ||
820 | data->segment_bases[0] = low; | |
821 | data->segment_sizes[0] = high - low; | |
822 | ||
823 | return data; | |
824 | } | |
825 | ||
608e2dbb TT |
826 | /* This is a convenience function to call sym_read for OBJFILE and |
827 | possibly force the partial symbols to be read. */ | |
828 | ||
829 | static void | |
830 | read_symbols (struct objfile *objfile, int add_flags) | |
831 | { | |
832 | (*objfile->sf->sym_read) (objfile, add_flags); | |
8a92335b JK |
833 | |
834 | /* find_separate_debug_file_in_section should be called only if there is | |
835 | single binary with no existing separate debug info file. */ | |
836 | if (!objfile_has_partial_symbols (objfile) | |
837 | && objfile->separate_debug_objfile == NULL | |
838 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb TT |
839 | { |
840 | bfd *abfd = find_separate_debug_file_in_section (objfile); | |
841 | struct cleanup *cleanup = make_cleanup_bfd_unref (abfd); | |
842 | ||
843 | if (abfd != NULL) | |
844 | symbol_file_add_separate (abfd, add_flags, objfile); | |
845 | ||
846 | do_cleanups (cleanup); | |
847 | } | |
848 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
849 | require_partial_symbols (objfile, 0); | |
850 | } | |
851 | ||
3d6e24f0 JB |
852 | /* Initialize entry point information for this objfile. */ |
853 | ||
854 | static void | |
855 | init_entry_point_info (struct objfile *objfile) | |
856 | { | |
857 | /* Save startup file's range of PC addresses to help blockframe.c | |
858 | decide where the bottom of the stack is. */ | |
859 | ||
860 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
861 | { | |
862 | /* Executable file -- record its entry point so we'll recognize | |
863 | the startup file because it contains the entry point. */ | |
864 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
865 | objfile->ei.entry_point_p = 1; | |
866 | } | |
867 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
868 | && bfd_get_start_address (objfile->obfd) != 0) | |
869 | { | |
870 | /* Some shared libraries may have entry points set and be | |
871 | runnable. There's no clear way to indicate this, so just check | |
872 | for values other than zero. */ | |
873 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
874 | objfile->ei.entry_point_p = 1; | |
875 | } | |
876 | else | |
877 | { | |
878 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
879 | objfile->ei.entry_point_p = 0; | |
880 | } | |
881 | ||
882 | if (objfile->ei.entry_point_p) | |
883 | { | |
884 | CORE_ADDR entry_point = objfile->ei.entry_point; | |
885 | ||
886 | /* Make certain that the address points at real code, and not a | |
887 | function descriptor. */ | |
888 | entry_point | |
889 | = gdbarch_convert_from_func_ptr_addr (objfile->gdbarch, | |
890 | entry_point, | |
891 | ¤t_target); | |
892 | ||
893 | /* Remove any ISA markers, so that this matches entries in the | |
894 | symbol table. */ | |
895 | objfile->ei.entry_point | |
896 | = gdbarch_addr_bits_remove (objfile->gdbarch, entry_point); | |
897 | } | |
898 | } | |
899 | ||
c906108c SS |
900 | /* Process a symbol file, as either the main file or as a dynamically |
901 | loaded file. | |
902 | ||
36e4d068 JB |
903 | This function does not set the OBJFILE's entry-point info. |
904 | ||
96baa820 JM |
905 | OBJFILE is where the symbols are to be read from. |
906 | ||
7e8580c1 JB |
907 | ADDRS is the list of section load addresses. If the user has given |
908 | an 'add-symbol-file' command, then this is the list of offsets and | |
909 | addresses he or she provided as arguments to the command; or, if | |
910 | we're handling a shared library, these are the actual addresses the | |
911 | sections are loaded at, according to the inferior's dynamic linker | |
912 | (as gleaned by GDB's shared library code). We convert each address | |
913 | into an offset from the section VMA's as it appears in the object | |
914 | file, and then call the file's sym_offsets function to convert this | |
915 | into a format-specific offset table --- a `struct section_offsets'. | |
916 | If ADDRS is non-zero, OFFSETS must be zero. | |
917 | ||
918 | OFFSETS is a table of section offsets already in the right | |
919 | format-specific representation. NUM_OFFSETS is the number of | |
920 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
921 | assume this is the proper table the call to sym_offsets described | |
922 | above would produce. Instead of calling sym_offsets, we just dump | |
923 | it right into objfile->section_offsets. (When we're re-reading | |
924 | symbols from an objfile, we don't have the original load address | |
925 | list any more; all we have is the section offset table.) If | |
926 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 927 | |
7eedccfa PP |
928 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
929 | an extra symbol file such as dynamically loaded code, and wether | |
930 | breakpoint reset should be deferred. */ | |
c906108c | 931 | |
36e4d068 JB |
932 | static void |
933 | syms_from_objfile_1 (struct objfile *objfile, | |
934 | struct section_addr_info *addrs, | |
3189cb12 | 935 | const struct section_offsets *offsets, |
36e4d068 JB |
936 | int num_offsets, |
937 | int add_flags) | |
c906108c | 938 | { |
a39a16c4 | 939 | struct section_addr_info *local_addr = NULL; |
c906108c | 940 | struct cleanup *old_chain; |
7eedccfa | 941 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 942 | |
7e8580c1 | 943 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 944 | |
31d99776 | 945 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 946 | |
75245b24 | 947 | if (objfile->sf == NULL) |
36e4d068 JB |
948 | { |
949 | /* No symbols to load, but we still need to make sure | |
950 | that the section_offsets table is allocated. */ | |
d445b2f6 | 951 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 952 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
953 | |
954 | objfile->num_sections = num_sections; | |
955 | objfile->section_offsets | |
956 | = obstack_alloc (&objfile->objfile_obstack, size); | |
957 | memset (objfile->section_offsets, 0, size); | |
958 | return; | |
959 | } | |
75245b24 | 960 | |
c906108c SS |
961 | /* Make sure that partially constructed symbol tables will be cleaned up |
962 | if an error occurs during symbol reading. */ | |
74b7792f | 963 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 964 | |
a39a16c4 MM |
965 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
966 | list. We now establish the convention that an addr of zero means | |
c378eb4e | 967 | no load address was specified. */ |
a39a16c4 MM |
968 | if (! addrs && ! offsets) |
969 | { | |
d445b2f6 | 970 | local_addr = alloc_section_addr_info (1); |
a39a16c4 MM |
971 | make_cleanup (xfree, local_addr); |
972 | addrs = local_addr; | |
973 | } | |
974 | ||
975 | /* Now either addrs or offsets is non-zero. */ | |
976 | ||
c5aa993b | 977 | if (mainline) |
c906108c SS |
978 | { |
979 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 980 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 981 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
982 | |
983 | /* Since no error yet, throw away the old symbol table. */ | |
984 | ||
985 | if (symfile_objfile != NULL) | |
986 | { | |
987 | free_objfile (symfile_objfile); | |
adb7f338 | 988 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
989 | } |
990 | ||
991 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
992 | If the user wants to get rid of them, they should do "symbol-file" |
993 | without arguments first. Not sure this is the best behavior | |
994 | (PR 2207). */ | |
c906108c | 995 | |
c5aa993b | 996 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
997 | } |
998 | ||
999 | /* Convert addr into an offset rather than an absolute address. | |
1000 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 1001 | and assume that <addr> is where that got loaded. |
c906108c | 1002 | |
53a5351d JM |
1003 | We no longer warn if the lowest section is not a text segment (as |
1004 | happens for the PA64 port. */ | |
d76488d8 | 1005 | if (addrs && addrs->num_sections > 0) |
75242ef4 | 1006 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1007 | |
1008 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1009 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1010 | initial symbol reading for this file. */ |
c906108c | 1011 | |
c5aa993b | 1012 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1013 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1014 | |
7e8580c1 JB |
1015 | if (addrs) |
1016 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
1017 | else | |
1018 | { | |
1019 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
1020 | ||
1021 | /* Just copy in the offset table directly as given to us. */ | |
1022 | objfile->num_sections = num_offsets; | |
1023 | objfile->section_offsets | |
1024 | = ((struct section_offsets *) | |
8b92e4d5 | 1025 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
1026 | memcpy (objfile->section_offsets, offsets, size); |
1027 | ||
1028 | init_objfile_sect_indices (objfile); | |
1029 | } | |
c906108c | 1030 | |
608e2dbb | 1031 | read_symbols (objfile, add_flags); |
b11896a5 | 1032 | |
c906108c SS |
1033 | /* Discard cleanups as symbol reading was successful. */ |
1034 | ||
1035 | discard_cleanups (old_chain); | |
f7545552 | 1036 | xfree (local_addr); |
c906108c SS |
1037 | } |
1038 | ||
36e4d068 JB |
1039 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1040 | entry-point info. */ | |
1041 | ||
1042 | void | |
1043 | syms_from_objfile (struct objfile *objfile, | |
1044 | struct section_addr_info *addrs, | |
3189cb12 | 1045 | const struct section_offsets *offsets, |
36e4d068 JB |
1046 | int num_offsets, |
1047 | int add_flags) | |
1048 | { | |
1049 | syms_from_objfile_1 (objfile, addrs, offsets, num_offsets, add_flags); | |
1050 | init_entry_point_info (objfile); | |
1051 | } | |
1052 | ||
c906108c SS |
1053 | /* Perform required actions after either reading in the initial |
1054 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1055 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1056 | |
c906108c | 1057 | void |
7eedccfa | 1058 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1059 | { |
c906108c | 1060 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1061 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1062 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1063 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1064 | { |
1065 | /* OK, make it the "real" symbol file. */ | |
1066 | symfile_objfile = objfile; | |
1067 | ||
c1e56572 | 1068 | clear_symtab_users (add_flags); |
c906108c | 1069 | } |
7eedccfa | 1070 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1071 | { |
69de3c6a | 1072 | breakpoint_re_set (); |
c906108c SS |
1073 | } |
1074 | ||
1075 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1076 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1077 | } |
1078 | ||
1079 | /* Process a symbol file, as either the main file or as a dynamically | |
1080 | loaded file. | |
1081 | ||
5417f6dc | 1082 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1083 | A new reference is acquired by this function. |
7904e09f | 1084 | |
7eedccfa PP |
1085 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1086 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1087 | |
1088 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1089 | syms_from_objfile, above. |
1090 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1091 | |
63524580 JK |
1092 | PARENT is the original objfile if ABFD is a separate debug info file. |
1093 | Otherwise PARENT is NULL. | |
1094 | ||
c906108c | 1095 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1096 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1097 | |
7904e09f | 1098 | static struct objfile * |
7eedccfa PP |
1099 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1100 | int add_flags, | |
7904e09f | 1101 | struct section_addr_info *addrs, |
3189cb12 | 1102 | const struct section_offsets *offsets, |
7904e09f | 1103 | int num_offsets, |
63524580 | 1104 | int flags, struct objfile *parent) |
c906108c SS |
1105 | { |
1106 | struct objfile *objfile; | |
5417f6dc | 1107 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1108 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1109 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1110 | const int should_print = ((from_tty || info_verbose) |
1111 | && (readnow_symbol_files | |
1112 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1113 | |
9291a0cd | 1114 | if (readnow_symbol_files) |
b11896a5 TT |
1115 | { |
1116 | flags |= OBJF_READNOW; | |
1117 | add_flags &= ~SYMFILE_NO_READ; | |
1118 | } | |
9291a0cd | 1119 | |
5417f6dc RM |
1120 | /* Give user a chance to burp if we'd be |
1121 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1122 | |
1123 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1124 | && mainline |
c906108c | 1125 | && from_tty |
9e2f0ad4 | 1126 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1127 | error (_("Not confirmed.")); |
c906108c | 1128 | |
0838fb57 | 1129 | objfile = allocate_objfile (abfd, flags | (mainline ? OBJF_MAINLINE : 0)); |
c906108c | 1130 | |
63524580 JK |
1131 | if (parent) |
1132 | add_separate_debug_objfile (objfile, parent); | |
1133 | ||
78a4a9b9 AC |
1134 | /* We either created a new mapped symbol table, mapped an existing |
1135 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1136 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1137 | if (should_print) |
c906108c | 1138 | { |
769d7dc4 AC |
1139 | if (deprecated_pre_add_symbol_hook) |
1140 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1141 | else |
c906108c | 1142 | { |
55333a84 DE |
1143 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1144 | wrap_here (""); | |
1145 | gdb_flush (gdb_stdout); | |
c906108c | 1146 | } |
c906108c | 1147 | } |
78a4a9b9 | 1148 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1149 | add_flags); |
c906108c SS |
1150 | |
1151 | /* We now have at least a partial symbol table. Check to see if the | |
1152 | user requested that all symbols be read on initial access via either | |
1153 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1154 | all partial symbol tables for this objfile if so. */ |
c906108c | 1155 | |
9291a0cd | 1156 | if ((flags & OBJF_READNOW)) |
c906108c | 1157 | { |
b11896a5 | 1158 | if (should_print) |
c906108c | 1159 | { |
a3f17187 | 1160 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1161 | wrap_here (""); |
1162 | gdb_flush (gdb_stdout); | |
1163 | } | |
1164 | ||
ccefe4c4 TT |
1165 | if (objfile->sf) |
1166 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1167 | } |
1168 | ||
b11896a5 | 1169 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1170 | { |
1171 | wrap_here (""); | |
55333a84 | 1172 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1173 | wrap_here (""); |
1174 | } | |
1175 | ||
b11896a5 | 1176 | if (should_print) |
c906108c | 1177 | { |
769d7dc4 AC |
1178 | if (deprecated_post_add_symbol_hook) |
1179 | deprecated_post_add_symbol_hook (); | |
c906108c | 1180 | else |
55333a84 | 1181 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1182 | } |
1183 | ||
481d0f41 JB |
1184 | /* We print some messages regardless of whether 'from_tty || |
1185 | info_verbose' is true, so make sure they go out at the right | |
1186 | time. */ | |
1187 | gdb_flush (gdb_stdout); | |
1188 | ||
109f874e | 1189 | if (objfile->sf == NULL) |
8caee43b PP |
1190 | { |
1191 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1192 | return objfile; /* No symbols. */ |
8caee43b | 1193 | } |
109f874e | 1194 | |
7eedccfa | 1195 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1196 | |
06d3b283 | 1197 | observer_notify_new_objfile (objfile); |
c906108c | 1198 | |
ce7d4522 | 1199 | bfd_cache_close_all (); |
c906108c SS |
1200 | return (objfile); |
1201 | } | |
1202 | ||
9cce227f TG |
1203 | /* Add BFD as a separate debug file for OBJFILE. */ |
1204 | ||
1205 | void | |
1206 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1207 | { | |
15d123c9 | 1208 | struct objfile *new_objfile; |
089b4803 TG |
1209 | struct section_addr_info *sap; |
1210 | struct cleanup *my_cleanup; | |
1211 | ||
1212 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1213 | because sections of BFD may not match sections of OBJFILE and because | |
1214 | vma may have been modified by tools such as prelink. */ | |
1215 | sap = build_section_addr_info_from_objfile (objfile); | |
1216 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1217 | |
15d123c9 | 1218 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1219 | (bfd, symfile_flags, |
089b4803 | 1220 | sap, NULL, 0, |
9cce227f | 1221 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1222 | | OBJF_USERLOADED), |
1223 | objfile); | |
089b4803 TG |
1224 | |
1225 | do_cleanups (my_cleanup); | |
9cce227f | 1226 | } |
7904e09f | 1227 | |
eb4556d7 JB |
1228 | /* Process the symbol file ABFD, as either the main file or as a |
1229 | dynamically loaded file. | |
1230 | ||
1231 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1232 | details. */ | |
1233 | struct objfile * | |
7eedccfa | 1234 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1235 | struct section_addr_info *addrs, |
63524580 | 1236 | int flags, struct objfile *parent) |
eb4556d7 | 1237 | { |
7eedccfa | 1238 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
63524580 | 1239 | flags, parent); |
eb4556d7 JB |
1240 | } |
1241 | ||
1242 | ||
7904e09f JB |
1243 | /* Process a symbol file, as either the main file or as a dynamically |
1244 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1245 | for details. */ | |
1246 | struct objfile * | |
7eedccfa PP |
1247 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1248 | int flags) | |
7904e09f | 1249 | { |
8ac244b4 TT |
1250 | bfd *bfd = symfile_bfd_open (name); |
1251 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1252 | struct objfile *objf; | |
1253 | ||
882f447f | 1254 | objf = symbol_file_add_from_bfd (bfd, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1255 | do_cleanups (cleanup); |
1256 | return objf; | |
7904e09f JB |
1257 | } |
1258 | ||
1259 | ||
d7db6da9 FN |
1260 | /* Call symbol_file_add() with default values and update whatever is |
1261 | affected by the loading of a new main(). | |
1262 | Used when the file is supplied in the gdb command line | |
1263 | and by some targets with special loading requirements. | |
1264 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1265 | argument for the switches that can only be specified in the symbol_file | |
1266 | command itself. */ | |
5417f6dc | 1267 | |
1adeb98a FN |
1268 | void |
1269 | symbol_file_add_main (char *args, int from_tty) | |
1270 | { | |
d7db6da9 FN |
1271 | symbol_file_add_main_1 (args, from_tty, 0); |
1272 | } | |
1273 | ||
1274 | static void | |
1275 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1276 | { | |
7dcd53a0 TT |
1277 | const int add_flags = (current_inferior ()->symfile_flags |
1278 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1279 | ||
7eedccfa | 1280 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1281 | |
d7db6da9 FN |
1282 | /* Getting new symbols may change our opinion about |
1283 | what is frameless. */ | |
1284 | reinit_frame_cache (); | |
1285 | ||
7dcd53a0 TT |
1286 | if ((flags & SYMFILE_NO_READ) == 0) |
1287 | set_initial_language (); | |
1adeb98a FN |
1288 | } |
1289 | ||
1290 | void | |
1291 | symbol_file_clear (int from_tty) | |
1292 | { | |
1293 | if ((have_full_symbols () || have_partial_symbols ()) | |
1294 | && from_tty | |
0430b0d6 AS |
1295 | && (symfile_objfile |
1296 | ? !query (_("Discard symbol table from `%s'? "), | |
1297 | symfile_objfile->name) | |
1298 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1299 | error (_("Not confirmed.")); |
1adeb98a | 1300 | |
0133421a JK |
1301 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1302 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1303 | no_shared_libraries (NULL, from_tty); |
1304 | ||
0133421a JK |
1305 | free_all_objfiles (); |
1306 | ||
adb7f338 | 1307 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1308 | if (from_tty) |
1309 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1310 | } |
1311 | ||
5b5d99cf | 1312 | static int |
287ccc17 | 1313 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1314 | struct objfile *parent_objfile) |
5b5d99cf | 1315 | { |
904578ed JK |
1316 | unsigned long file_crc; |
1317 | int file_crc_p; | |
f1838a98 | 1318 | bfd *abfd; |
32a0e547 | 1319 | struct stat parent_stat, abfd_stat; |
904578ed | 1320 | int verified_as_different; |
32a0e547 JK |
1321 | |
1322 | /* Find a separate debug info file as if symbols would be present in | |
1323 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1324 | section can contain just the basename of PARENT_OBJFILE without any | |
1325 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1326 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1327 | |
0ba1096a | 1328 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1329 | return 0; |
5b5d99cf | 1330 | |
08d2cd74 | 1331 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1332 | |
1333 | if (!abfd) | |
5b5d99cf JB |
1334 | return 0; |
1335 | ||
0ba1096a | 1336 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1337 | |
1338 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1339 | st_ino; they always set it to zero. (Windows does provide a | |
1340 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1341 | case. While there is no guarantee that a system that provides | |
1342 | meaningful inode numbers will never set st_ino to zero, this is | |
1343 | merely an optimization, so we do not need to worry about false | |
1344 | negatives. */ | |
1345 | ||
1346 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1347 | && abfd_stat.st_ino != 0 |
1348 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1349 | { |
904578ed JK |
1350 | if (abfd_stat.st_dev == parent_stat.st_dev |
1351 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1352 | { | |
cbb099e8 | 1353 | gdb_bfd_unref (abfd); |
904578ed JK |
1354 | return 0; |
1355 | } | |
1356 | verified_as_different = 1; | |
32a0e547 | 1357 | } |
904578ed JK |
1358 | else |
1359 | verified_as_different = 0; | |
32a0e547 | 1360 | |
dccee2de | 1361 | file_crc_p = gdb_bfd_crc (abfd, &file_crc); |
5b5d99cf | 1362 | |
cbb099e8 | 1363 | gdb_bfd_unref (abfd); |
5b5d99cf | 1364 | |
904578ed JK |
1365 | if (!file_crc_p) |
1366 | return 0; | |
1367 | ||
287ccc17 JK |
1368 | if (crc != file_crc) |
1369 | { | |
dccee2de TT |
1370 | unsigned long parent_crc; |
1371 | ||
904578ed JK |
1372 | /* If one (or both) the files are accessed for example the via "remote:" |
1373 | gdbserver way it does not support the bfd_stat operation. Verify | |
1374 | whether those two files are not the same manually. */ | |
1375 | ||
dccee2de | 1376 | if (!verified_as_different) |
904578ed | 1377 | { |
dccee2de | 1378 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
904578ed JK |
1379 | return 0; |
1380 | } | |
1381 | ||
dccee2de | 1382 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1383 | warning (_("the debug information found in \"%s\"" |
1384 | " does not match \"%s\" (CRC mismatch).\n"), | |
1385 | name, parent_objfile->name); | |
1386 | ||
287ccc17 JK |
1387 | return 0; |
1388 | } | |
1389 | ||
1390 | return 1; | |
5b5d99cf JB |
1391 | } |
1392 | ||
aa28a74e | 1393 | char *debug_file_directory = NULL; |
920d2a44 AC |
1394 | static void |
1395 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1396 | struct cmd_list_element *c, const char *value) | |
1397 | { | |
3e43a32a MS |
1398 | fprintf_filtered (file, |
1399 | _("The directory where separate debug " | |
1400 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1401 | value); |
1402 | } | |
5b5d99cf JB |
1403 | |
1404 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1405 | #define DEBUG_SUBDIRECTORY ".debug" | |
1406 | #endif | |
1407 | ||
1db33378 PP |
1408 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1409 | where the original file resides (may not be the same as | |
1410 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1411 | looking for. CANON_DIR is the "realpath" form of DIR. |
1412 | DIR must contain a trailing '/'. | |
1413 | Returns the path of the file with separate debug info, of NULL. */ | |
1db33378 PP |
1414 | |
1415 | static char * | |
1416 | find_separate_debug_file (const char *dir, | |
1417 | const char *canon_dir, | |
1418 | const char *debuglink, | |
1419 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1420 | { |
1db33378 PP |
1421 | char *debugdir; |
1422 | char *debugfile; | |
9cce227f | 1423 | int i; |
e4ab2fad JK |
1424 | VEC (char_ptr) *debugdir_vec; |
1425 | struct cleanup *back_to; | |
1426 | int ix; | |
5b5d99cf | 1427 | |
1db33378 | 1428 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1429 | i = strlen (dir); |
1db33378 PP |
1430 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1431 | i = strlen (canon_dir); | |
1ffa32ee | 1432 | |
25522fae JK |
1433 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1434 | + i | |
1435 | + strlen (DEBUG_SUBDIRECTORY) | |
1436 | + strlen ("/") | |
1db33378 | 1437 | + strlen (debuglink) |
25522fae | 1438 | + 1); |
5b5d99cf JB |
1439 | |
1440 | /* First try in the same directory as the original file. */ | |
1441 | strcpy (debugfile, dir); | |
1db33378 | 1442 | strcat (debugfile, debuglink); |
5b5d99cf | 1443 | |
32a0e547 | 1444 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1445 | return debugfile; |
5417f6dc | 1446 | |
5b5d99cf JB |
1447 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1448 | strcpy (debugfile, dir); | |
1449 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1450 | strcat (debugfile, "/"); | |
1db33378 | 1451 | strcat (debugfile, debuglink); |
5b5d99cf | 1452 | |
32a0e547 | 1453 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1454 | return debugfile; |
5417f6dc | 1455 | |
24ddea62 | 1456 | /* Then try in the global debugfile directories. |
f888f159 | 1457 | |
24ddea62 JK |
1458 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1459 | cause "/..." lookups. */ | |
5417f6dc | 1460 | |
e4ab2fad JK |
1461 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1462 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1463 | |
e4ab2fad JK |
1464 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1465 | { | |
1466 | strcpy (debugfile, debugdir); | |
aa28a74e | 1467 | strcat (debugfile, "/"); |
24ddea62 | 1468 | strcat (debugfile, dir); |
1db33378 | 1469 | strcat (debugfile, debuglink); |
aa28a74e | 1470 | |
32a0e547 | 1471 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1472 | return debugfile; |
24ddea62 JK |
1473 | |
1474 | /* If the file is in the sysroot, try using its base path in the | |
1475 | global debugfile directory. */ | |
1db33378 PP |
1476 | if (canon_dir != NULL |
1477 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1478 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1479 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1480 | { |
e4ab2fad | 1481 | strcpy (debugfile, debugdir); |
1db33378 | 1482 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1483 | strcat (debugfile, "/"); |
1db33378 | 1484 | strcat (debugfile, debuglink); |
24ddea62 | 1485 | |
32a0e547 | 1486 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1487 | return debugfile; |
24ddea62 | 1488 | } |
aa28a74e | 1489 | } |
f888f159 | 1490 | |
e4ab2fad | 1491 | do_cleanups (back_to); |
25522fae | 1492 | xfree (debugfile); |
1db33378 PP |
1493 | return NULL; |
1494 | } | |
1495 | ||
7edbb660 | 1496 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1497 | If there were no directory separators in PATH, PATH will be empty |
1498 | string on return. */ | |
1499 | ||
1500 | static void | |
1501 | terminate_after_last_dir_separator (char *path) | |
1502 | { | |
1503 | int i; | |
1504 | ||
1505 | /* Strip off the final filename part, leaving the directory name, | |
1506 | followed by a slash. The directory can be relative or absolute. */ | |
1507 | for (i = strlen(path) - 1; i >= 0; i--) | |
1508 | if (IS_DIR_SEPARATOR (path[i])) | |
1509 | break; | |
1510 | ||
1511 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1512 | path[i + 1] = '\0'; | |
1513 | } | |
1514 | ||
1515 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1516 | Returns pathname, or NULL. */ | |
1517 | ||
1518 | char * | |
1519 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1520 | { | |
1521 | char *debuglink; | |
1522 | char *dir, *canon_dir; | |
1523 | char *debugfile; | |
1524 | unsigned long crc32; | |
1525 | struct cleanup *cleanups; | |
1526 | ||
cc0ea93c | 1527 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1528 | |
1529 | if (debuglink == NULL) | |
1530 | { | |
1531 | /* There's no separate debug info, hence there's no way we could | |
1532 | load it => no warning. */ | |
1533 | return NULL; | |
1534 | } | |
1535 | ||
71bdabee | 1536 | cleanups = make_cleanup (xfree, debuglink); |
1db33378 | 1537 | dir = xstrdup (objfile->name); |
71bdabee | 1538 | make_cleanup (xfree, dir); |
1db33378 PP |
1539 | terminate_after_last_dir_separator (dir); |
1540 | canon_dir = lrealpath (dir); | |
1541 | ||
1542 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1543 | crc32, objfile); | |
1544 | xfree (canon_dir); | |
1545 | ||
1546 | if (debugfile == NULL) | |
1547 | { | |
1548 | #ifdef HAVE_LSTAT | |
1549 | /* For PR gdb/9538, try again with realpath (if different from the | |
1550 | original). */ | |
1551 | ||
1552 | struct stat st_buf; | |
1553 | ||
1554 | if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode)) | |
1555 | { | |
1556 | char *symlink_dir; | |
1557 | ||
1558 | symlink_dir = lrealpath (objfile->name); | |
1559 | if (symlink_dir != NULL) | |
1560 | { | |
1561 | make_cleanup (xfree, symlink_dir); | |
1562 | terminate_after_last_dir_separator (symlink_dir); | |
1563 | if (strcmp (dir, symlink_dir) != 0) | |
1564 | { | |
1565 | /* Different directory, so try using it. */ | |
1566 | debugfile = find_separate_debug_file (symlink_dir, | |
1567 | symlink_dir, | |
1568 | debuglink, | |
1569 | crc32, | |
1570 | objfile); | |
1571 | } | |
1572 | } | |
1573 | } | |
1574 | #endif /* HAVE_LSTAT */ | |
1575 | } | |
aa28a74e | 1576 | |
1db33378 | 1577 | do_cleanups (cleanups); |
25522fae | 1578 | return debugfile; |
5b5d99cf JB |
1579 | } |
1580 | ||
1581 | ||
c906108c SS |
1582 | /* This is the symbol-file command. Read the file, analyze its |
1583 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1584 | the command is rather bizarre: |
1585 | ||
1586 | 1. The function buildargv implements various quoting conventions | |
1587 | which are undocumented and have little or nothing in common with | |
1588 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1589 | ||
1590 | 2. Options are used, which are not generally used in GDB (perhaps | |
1591 | "set mapped on", "set readnow on" would be better) | |
1592 | ||
1593 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1594 | conventions (because it is confusing and inconvenient). */ |
1595 | ||
1596 | void | |
fba45db2 | 1597 | symbol_file_command (char *args, int from_tty) |
c906108c | 1598 | { |
c906108c SS |
1599 | dont_repeat (); |
1600 | ||
1601 | if (args == NULL) | |
1602 | { | |
1adeb98a | 1603 | symbol_file_clear (from_tty); |
c906108c SS |
1604 | } |
1605 | else | |
1606 | { | |
d1a41061 | 1607 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1608 | int flags = OBJF_USERLOADED; |
1609 | struct cleanup *cleanups; | |
1610 | char *name = NULL; | |
1611 | ||
7a292a7a | 1612 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1613 | while (*argv != NULL) |
1614 | { | |
78a4a9b9 AC |
1615 | if (strcmp (*argv, "-readnow") == 0) |
1616 | flags |= OBJF_READNOW; | |
1617 | else if (**argv == '-') | |
8a3fe4f8 | 1618 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1619 | else |
1620 | { | |
cb2f3a29 | 1621 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1622 | name = *argv; |
78a4a9b9 | 1623 | } |
cb2f3a29 | 1624 | |
c906108c SS |
1625 | argv++; |
1626 | } | |
1627 | ||
1628 | if (name == NULL) | |
cb2f3a29 MK |
1629 | error (_("no symbol file name was specified")); |
1630 | ||
c906108c SS |
1631 | do_cleanups (cleanups); |
1632 | } | |
1633 | } | |
1634 | ||
1635 | /* Set the initial language. | |
1636 | ||
cb2f3a29 MK |
1637 | FIXME: A better solution would be to record the language in the |
1638 | psymtab when reading partial symbols, and then use it (if known) to | |
1639 | set the language. This would be a win for formats that encode the | |
1640 | language in an easily discoverable place, such as DWARF. For | |
1641 | stabs, we can jump through hoops looking for specially named | |
1642 | symbols or try to intuit the language from the specific type of | |
1643 | stabs we find, but we can't do that until later when we read in | |
1644 | full symbols. */ | |
c906108c | 1645 | |
8b60591b | 1646 | void |
fba45db2 | 1647 | set_initial_language (void) |
c906108c | 1648 | { |
c5aa993b | 1649 | enum language lang = language_unknown; |
c906108c | 1650 | |
01f8c46d JK |
1651 | if (language_of_main != language_unknown) |
1652 | lang = language_of_main; | |
1653 | else | |
1654 | { | |
1655 | const char *filename; | |
f888f159 | 1656 | |
01f8c46d JK |
1657 | filename = find_main_filename (); |
1658 | if (filename != NULL) | |
1659 | lang = deduce_language_from_filename (filename); | |
1660 | } | |
cb2f3a29 | 1661 | |
ccefe4c4 TT |
1662 | if (lang == language_unknown) |
1663 | { | |
1664 | /* Make C the default language */ | |
1665 | lang = language_c; | |
c906108c | 1666 | } |
ccefe4c4 TT |
1667 | |
1668 | set_language (lang); | |
1669 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1670 | } |
1671 | ||
874f5765 | 1672 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1673 | open it normally. Returns a new reference to the BFD. On error, |
1674 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1675 | |
1676 | bfd * | |
08d2cd74 | 1677 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1678 | { |
520b0001 TT |
1679 | bfd *result; |
1680 | ||
874f5765 | 1681 | if (remote_filename_p (name)) |
520b0001 | 1682 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1683 | else |
1c00ec6b | 1684 | result = gdb_bfd_open (name, gnutarget, -1); |
520b0001 | 1685 | |
520b0001 | 1686 | return result; |
874f5765 TG |
1687 | } |
1688 | ||
1689 | ||
cb2f3a29 MK |
1690 | /* Open the file specified by NAME and hand it off to BFD for |
1691 | preliminary analysis. Return a newly initialized bfd *, which | |
1692 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1693 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1694 | |
1695 | bfd * | |
fba45db2 | 1696 | symfile_bfd_open (char *name) |
c906108c SS |
1697 | { |
1698 | bfd *sym_bfd; | |
1699 | int desc; | |
1700 | char *absolute_name; | |
faab9922 | 1701 | struct cleanup *back_to; |
c906108c | 1702 | |
f1838a98 UW |
1703 | if (remote_filename_p (name)) |
1704 | { | |
520b0001 | 1705 | sym_bfd = remote_bfd_open (name, gnutarget); |
f1838a98 | 1706 | if (!sym_bfd) |
a4453b7e TT |
1707 | error (_("`%s': can't open to read symbols: %s."), name, |
1708 | bfd_errmsg (bfd_get_error ())); | |
f1838a98 UW |
1709 | |
1710 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1711 | { | |
f9a062ff | 1712 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 UW |
1713 | error (_("`%s': can't read symbols: %s."), name, |
1714 | bfd_errmsg (bfd_get_error ())); | |
1715 | } | |
1716 | ||
1717 | return sym_bfd; | |
1718 | } | |
1719 | ||
cb2f3a29 | 1720 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1721 | |
1722 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1723 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1724 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1725 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1726 | if (desc < 0) |
1727 | { | |
1728 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1729 | |
c906108c | 1730 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1731 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1732 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1733 | } |
1734 | #endif | |
1735 | if (desc < 0) | |
1736 | { | |
b8c9b27d | 1737 | make_cleanup (xfree, name); |
c906108c SS |
1738 | perror_with_name (name); |
1739 | } | |
cb2f3a29 | 1740 | |
cb2f3a29 MK |
1741 | xfree (name); |
1742 | name = absolute_name; | |
faab9922 | 1743 | back_to = make_cleanup (xfree, name); |
c906108c | 1744 | |
1c00ec6b | 1745 | sym_bfd = gdb_bfd_open (name, gnutarget, desc); |
c906108c | 1746 | if (!sym_bfd) |
faab9922 JK |
1747 | error (_("`%s': can't open to read symbols: %s."), name, |
1748 | bfd_errmsg (bfd_get_error ())); | |
549c1eea | 1749 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1750 | |
1751 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1752 | { | |
f9a062ff | 1753 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1754 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1755 | bfd_errmsg (bfd_get_error ())); |
1756 | } | |
cb2f3a29 | 1757 | |
faab9922 JK |
1758 | do_cleanups (back_to); |
1759 | ||
cb2f3a29 | 1760 | return sym_bfd; |
c906108c SS |
1761 | } |
1762 | ||
cb2f3a29 MK |
1763 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1764 | the section was not found. */ | |
1765 | ||
0e931cf0 JB |
1766 | int |
1767 | get_section_index (struct objfile *objfile, char *section_name) | |
1768 | { | |
1769 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1770 | |
0e931cf0 JB |
1771 | if (sect) |
1772 | return sect->index; | |
1773 | else | |
1774 | return -1; | |
1775 | } | |
1776 | ||
cb2f3a29 MK |
1777 | /* Link SF into the global symtab_fns list. Called on startup by the |
1778 | _initialize routine in each object file format reader, to register | |
b021a221 | 1779 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1780 | |
1781 | void | |
00b5771c | 1782 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1783 | { |
00b5771c | 1784 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1785 | } |
1786 | ||
cb2f3a29 MK |
1787 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1788 | either returns or calls error(). The result is an initialized | |
1789 | struct sym_fns in the objfile structure, that contains cached | |
1790 | information about the symbol file. */ | |
c906108c | 1791 | |
00b5771c | 1792 | static const struct sym_fns * |
31d99776 | 1793 | find_sym_fns (bfd *abfd) |
c906108c | 1794 | { |
00b5771c | 1795 | const struct sym_fns *sf; |
31d99776 | 1796 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1797 | int i; |
c906108c | 1798 | |
75245b24 MS |
1799 | if (our_flavour == bfd_target_srec_flavour |
1800 | || our_flavour == bfd_target_ihex_flavour | |
1801 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1802 | return NULL; /* No symbols. */ |
75245b24 | 1803 | |
00b5771c | 1804 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1805 | if (our_flavour == sf->sym_flavour) |
1806 | return sf; | |
cb2f3a29 | 1807 | |
8a3fe4f8 | 1808 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1809 | bfd_get_target (abfd)); |
c906108c SS |
1810 | } |
1811 | \f | |
cb2f3a29 | 1812 | |
c906108c SS |
1813 | /* This function runs the load command of our current target. */ |
1814 | ||
1815 | static void | |
fba45db2 | 1816 | load_command (char *arg, int from_tty) |
c906108c | 1817 | { |
e5cc9f32 JB |
1818 | dont_repeat (); |
1819 | ||
4487aabf PA |
1820 | /* The user might be reloading because the binary has changed. Take |
1821 | this opportunity to check. */ | |
1822 | reopen_exec_file (); | |
1823 | reread_symbols (); | |
1824 | ||
c906108c | 1825 | if (arg == NULL) |
1986bccd AS |
1826 | { |
1827 | char *parg; | |
1828 | int count = 0; | |
1829 | ||
1830 | parg = arg = get_exec_file (1); | |
1831 | ||
1832 | /* Count how many \ " ' tab space there are in the name. */ | |
1833 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1834 | { | |
1835 | parg++; | |
1836 | count++; | |
1837 | } | |
1838 | ||
1839 | if (count) | |
1840 | { | |
1841 | /* We need to quote this string so buildargv can pull it apart. */ | |
1842 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1843 | char *ptemp = temp; | |
1844 | char *prev; | |
1845 | ||
1846 | make_cleanup (xfree, temp); | |
1847 | ||
1848 | prev = parg = arg; | |
1849 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1850 | { | |
1851 | strncpy (ptemp, prev, parg - prev); | |
1852 | ptemp += parg - prev; | |
1853 | prev = parg++; | |
1854 | *ptemp++ = '\\'; | |
1855 | } | |
1856 | strcpy (ptemp, prev); | |
1857 | ||
1858 | arg = temp; | |
1859 | } | |
1860 | } | |
1861 | ||
c906108c | 1862 | target_load (arg, from_tty); |
2889e661 JB |
1863 | |
1864 | /* After re-loading the executable, we don't really know which | |
1865 | overlays are mapped any more. */ | |
1866 | overlay_cache_invalid = 1; | |
c906108c SS |
1867 | } |
1868 | ||
1869 | /* This version of "load" should be usable for any target. Currently | |
1870 | it is just used for remote targets, not inftarg.c or core files, | |
1871 | on the theory that only in that case is it useful. | |
1872 | ||
1873 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1874 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1875 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1876 | performance compares. */ | |
917317f4 | 1877 | |
917317f4 JM |
1878 | static int validate_download = 0; |
1879 | ||
e4f9b4d5 MS |
1880 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1881 | ||
1882 | static void | |
1883 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1884 | { | |
1885 | bfd_size_type *sum = data; | |
1886 | ||
2c500098 | 1887 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1888 | } |
1889 | ||
1890 | /* Opaque data for load_section_callback. */ | |
1891 | struct load_section_data { | |
f698ca8e | 1892 | CORE_ADDR load_offset; |
a76d924d DJ |
1893 | struct load_progress_data *progress_data; |
1894 | VEC(memory_write_request_s) *requests; | |
1895 | }; | |
1896 | ||
1897 | /* Opaque data for load_progress. */ | |
1898 | struct load_progress_data { | |
1899 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1900 | unsigned long write_count; |
1901 | unsigned long data_count; | |
1902 | bfd_size_type total_size; | |
a76d924d DJ |
1903 | }; |
1904 | ||
1905 | /* Opaque data for load_progress for a single section. */ | |
1906 | struct load_progress_section_data { | |
1907 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1908 | |
a76d924d | 1909 | /* Per-section data. */ |
cf7a04e8 DJ |
1910 | const char *section_name; |
1911 | ULONGEST section_sent; | |
1912 | ULONGEST section_size; | |
1913 | CORE_ADDR lma; | |
1914 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1915 | }; |
1916 | ||
a76d924d | 1917 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1918 | |
1919 | static void | |
1920 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1921 | { | |
a76d924d DJ |
1922 | struct load_progress_section_data *args = untyped_arg; |
1923 | struct load_progress_data *totals; | |
1924 | ||
1925 | if (args == NULL) | |
1926 | /* Writing padding data. No easy way to get at the cumulative | |
1927 | stats, so just ignore this. */ | |
1928 | return; | |
1929 | ||
1930 | totals = args->cumulative; | |
1931 | ||
1932 | if (bytes == 0 && args->section_sent == 0) | |
1933 | { | |
1934 | /* The write is just starting. Let the user know we've started | |
1935 | this section. */ | |
79a45e25 | 1936 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 | 1937 | args->section_name, hex_string (args->section_size), |
f5656ead | 1938 | paddress (target_gdbarch (), args->lma)); |
a76d924d DJ |
1939 | return; |
1940 | } | |
cf7a04e8 DJ |
1941 | |
1942 | if (validate_download) | |
1943 | { | |
1944 | /* Broken memories and broken monitors manifest themselves here | |
1945 | when bring new computers to life. This doubles already slow | |
1946 | downloads. */ | |
1947 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1948 | might add a verify_memory() method to the target vector and | |
1949 | then use that. remote.c could implement that method using | |
1950 | the ``qCRC'' packet. */ | |
1951 | gdb_byte *check = xmalloc (bytes); | |
1952 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1953 | ||
1954 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 1955 | error (_("Download verify read failed at %s"), |
f5656ead | 1956 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1957 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 1958 | error (_("Download verify compare failed at %s"), |
f5656ead | 1959 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
1960 | do_cleanups (verify_cleanups); |
1961 | } | |
a76d924d | 1962 | totals->data_count += bytes; |
cf7a04e8 DJ |
1963 | args->lma += bytes; |
1964 | args->buffer += bytes; | |
a76d924d | 1965 | totals->write_count += 1; |
cf7a04e8 | 1966 | args->section_sent += bytes; |
522002f9 | 1967 | if (check_quit_flag () |
cf7a04e8 DJ |
1968 | || (deprecated_ui_load_progress_hook != NULL |
1969 | && deprecated_ui_load_progress_hook (args->section_name, | |
1970 | args->section_sent))) | |
1971 | error (_("Canceled the download")); | |
1972 | ||
1973 | if (deprecated_show_load_progress != NULL) | |
1974 | deprecated_show_load_progress (args->section_name, | |
1975 | args->section_sent, | |
1976 | args->section_size, | |
a76d924d DJ |
1977 | totals->data_count, |
1978 | totals->total_size); | |
cf7a04e8 DJ |
1979 | } |
1980 | ||
e4f9b4d5 MS |
1981 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1982 | ||
1983 | static void | |
1984 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1985 | { | |
a76d924d | 1986 | struct memory_write_request *new_request; |
e4f9b4d5 | 1987 | struct load_section_data *args = data; |
a76d924d | 1988 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1989 | bfd_size_type size = bfd_get_section_size (asec); |
1990 | gdb_byte *buffer; | |
cf7a04e8 | 1991 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1992 | |
cf7a04e8 DJ |
1993 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1994 | return; | |
e4f9b4d5 | 1995 | |
cf7a04e8 DJ |
1996 | if (size == 0) |
1997 | return; | |
e4f9b4d5 | 1998 | |
a76d924d DJ |
1999 | new_request = VEC_safe_push (memory_write_request_s, |
2000 | args->requests, NULL); | |
2001 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
2002 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
2003 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
2004 | new_request->end = new_request->begin + size; /* FIXME Should size |
2005 | be in instead? */ | |
a76d924d DJ |
2006 | new_request->data = xmalloc (size); |
2007 | new_request->baton = section_data; | |
cf7a04e8 | 2008 | |
a76d924d | 2009 | buffer = new_request->data; |
cf7a04e8 | 2010 | |
a76d924d DJ |
2011 | section_data->cumulative = args->progress_data; |
2012 | section_data->section_name = sect_name; | |
2013 | section_data->section_size = size; | |
2014 | section_data->lma = new_request->begin; | |
2015 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2016 | |
2017 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2018 | } |
2019 | ||
2020 | /* Clean up an entire memory request vector, including load | |
2021 | data and progress records. */ | |
cf7a04e8 | 2022 | |
a76d924d DJ |
2023 | static void |
2024 | clear_memory_write_data (void *arg) | |
2025 | { | |
2026 | VEC(memory_write_request_s) **vec_p = arg; | |
2027 | VEC(memory_write_request_s) *vec = *vec_p; | |
2028 | int i; | |
2029 | struct memory_write_request *mr; | |
cf7a04e8 | 2030 | |
a76d924d DJ |
2031 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2032 | { | |
2033 | xfree (mr->data); | |
2034 | xfree (mr->baton); | |
2035 | } | |
2036 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2037 | } |
2038 | ||
c906108c | 2039 | void |
917317f4 | 2040 | generic_load (char *args, int from_tty) |
c906108c | 2041 | { |
c906108c | 2042 | bfd *loadfile_bfd; |
2b71414d | 2043 | struct timeval start_time, end_time; |
917317f4 | 2044 | char *filename; |
1986bccd | 2045 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2046 | struct load_section_data cbdata; |
a76d924d | 2047 | struct load_progress_data total_progress; |
79a45e25 | 2048 | struct ui_out *uiout = current_uiout; |
a76d924d | 2049 | |
e4f9b4d5 | 2050 | CORE_ADDR entry; |
1986bccd | 2051 | char **argv; |
e4f9b4d5 | 2052 | |
a76d924d DJ |
2053 | memset (&cbdata, 0, sizeof (cbdata)); |
2054 | memset (&total_progress, 0, sizeof (total_progress)); | |
2055 | cbdata.progress_data = &total_progress; | |
2056 | ||
2057 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2058 | |
d1a41061 PP |
2059 | if (args == NULL) |
2060 | error_no_arg (_("file to load")); | |
1986bccd | 2061 | |
d1a41061 | 2062 | argv = gdb_buildargv (args); |
1986bccd AS |
2063 | make_cleanup_freeargv (argv); |
2064 | ||
2065 | filename = tilde_expand (argv[0]); | |
2066 | make_cleanup (xfree, filename); | |
2067 | ||
2068 | if (argv[1] != NULL) | |
917317f4 | 2069 | { |
f698ca8e | 2070 | const char *endptr; |
ba5f2f8a | 2071 | |
f698ca8e | 2072 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2073 | |
2074 | /* If the last word was not a valid number then | |
2075 | treat it as a file name with spaces in. */ | |
2076 | if (argv[1] == endptr) | |
2077 | error (_("Invalid download offset:%s."), argv[1]); | |
2078 | ||
2079 | if (argv[2] != NULL) | |
2080 | error (_("Too many parameters.")); | |
917317f4 | 2081 | } |
c906108c | 2082 | |
c378eb4e | 2083 | /* Open the file for loading. */ |
1c00ec6b | 2084 | loadfile_bfd = gdb_bfd_open (filename, gnutarget, -1); |
c906108c SS |
2085 | if (loadfile_bfd == NULL) |
2086 | { | |
2087 | perror_with_name (filename); | |
2088 | return; | |
2089 | } | |
917317f4 | 2090 | |
f9a062ff | 2091 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2092 | |
c5aa993b | 2093 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2094 | { |
8a3fe4f8 | 2095 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2096 | bfd_errmsg (bfd_get_error ())); |
2097 | } | |
c5aa993b | 2098 | |
5417f6dc | 2099 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2100 | (void *) &total_progress.total_size); |
2101 | ||
2102 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2103 | |
2b71414d | 2104 | gettimeofday (&start_time, NULL); |
c906108c | 2105 | |
a76d924d DJ |
2106 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2107 | load_progress) != 0) | |
2108 | error (_("Load failed")); | |
c906108c | 2109 | |
2b71414d | 2110 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2111 | |
e4f9b4d5 | 2112 | entry = bfd_get_start_address (loadfile_bfd); |
8c2b9656 | 2113 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
e4f9b4d5 | 2114 | ui_out_text (uiout, "Start address "); |
f5656ead | 2115 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch (), entry)); |
e4f9b4d5 | 2116 | ui_out_text (uiout, ", load size "); |
a76d924d | 2117 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2118 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2119 | /* We were doing this in remote-mips.c, I suspect it is right |
2120 | for other targets too. */ | |
fb14de7b | 2121 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2122 | |
38963c97 DJ |
2123 | /* Reset breakpoints, now that we have changed the load image. For |
2124 | instance, breakpoints may have been set (or reset, by | |
2125 | post_create_inferior) while connected to the target but before we | |
2126 | loaded the program. In that case, the prologue analyzer could | |
2127 | have read instructions from the target to find the right | |
2128 | breakpoint locations. Loading has changed the contents of that | |
2129 | memory. */ | |
2130 | ||
2131 | breakpoint_re_set (); | |
2132 | ||
7ca9f392 AC |
2133 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2134 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2135 | was commented out), making the call confuses GDB if more than one | |
2136 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2137 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2138 | |
a76d924d DJ |
2139 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2140 | total_progress.write_count, | |
2141 | &start_time, &end_time); | |
c906108c SS |
2142 | |
2143 | do_cleanups (old_cleanups); | |
2144 | } | |
2145 | ||
c378eb4e | 2146 | /* Report how fast the transfer went. */ |
c906108c | 2147 | |
917317f4 | 2148 | void |
d9fcf2fb | 2149 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2150 | unsigned long data_count, |
2151 | unsigned long write_count, | |
2b71414d DJ |
2152 | const struct timeval *start_time, |
2153 | const struct timeval *end_time) | |
917317f4 | 2154 | { |
9f43d28c | 2155 | ULONGEST time_count; |
79a45e25 | 2156 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2157 | |
2158 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2159 | accuracy and overflow. */ | |
2160 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2161 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2162 | ||
8b93c638 JM |
2163 | ui_out_text (uiout, "Transfer rate: "); |
2164 | if (time_count > 0) | |
2165 | { | |
9f43d28c DJ |
2166 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2167 | ||
2168 | if (ui_out_is_mi_like_p (uiout)) | |
2169 | { | |
2170 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2171 | ui_out_text (uiout, " bits/sec"); | |
2172 | } | |
2173 | else if (rate < 1024) | |
2174 | { | |
2175 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2176 | ui_out_text (uiout, " bytes/sec"); | |
2177 | } | |
2178 | else | |
2179 | { | |
2180 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2181 | ui_out_text (uiout, " KB/sec"); | |
2182 | } | |
8b93c638 JM |
2183 | } |
2184 | else | |
2185 | { | |
ba5f2f8a | 2186 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2187 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2188 | } |
2189 | if (write_count > 0) | |
2190 | { | |
2191 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2192 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2193 | ui_out_text (uiout, " bytes/write"); |
2194 | } | |
2195 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2196 | } |
2197 | ||
2198 | /* This function allows the addition of incrementally linked object files. | |
2199 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2200 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2201 | special case syntax for the rombug target (Rombug is the boot | |
2202 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2203 | rombug case, the user doesn't need to supply a text address, | |
2204 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2205 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2206 | |
c906108c | 2207 | static void |
fba45db2 | 2208 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2209 | { |
5af949e3 | 2210 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2211 | char *filename = NULL; |
2df3850c | 2212 | int flags = OBJF_USERLOADED; |
c906108c | 2213 | char *arg; |
db162d44 | 2214 | int section_index = 0; |
2acceee2 JM |
2215 | int argcnt = 0; |
2216 | int sec_num = 0; | |
2217 | int i; | |
db162d44 EZ |
2218 | int expecting_sec_name = 0; |
2219 | int expecting_sec_addr = 0; | |
5b96932b | 2220 | char **argv; |
db162d44 | 2221 | |
a39a16c4 | 2222 | struct sect_opt |
2acceee2 | 2223 | { |
2acceee2 JM |
2224 | char *name; |
2225 | char *value; | |
a39a16c4 | 2226 | }; |
db162d44 | 2227 | |
a39a16c4 MM |
2228 | struct section_addr_info *section_addrs; |
2229 | struct sect_opt *sect_opts = NULL; | |
2230 | size_t num_sect_opts = 0; | |
3017564a | 2231 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2232 | |
a39a16c4 | 2233 | num_sect_opts = 16; |
5417f6dc | 2234 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2235 | * sizeof (struct sect_opt)); |
2236 | ||
c906108c SS |
2237 | dont_repeat (); |
2238 | ||
2239 | if (args == NULL) | |
8a3fe4f8 | 2240 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2241 | |
d1a41061 | 2242 | argv = gdb_buildargv (args); |
5b96932b | 2243 | make_cleanup_freeargv (argv); |
db162d44 | 2244 | |
5b96932b AS |
2245 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2246 | { | |
c378eb4e | 2247 | /* Process the argument. */ |
db162d44 | 2248 | if (argcnt == 0) |
c906108c | 2249 | { |
c378eb4e | 2250 | /* The first argument is the file name. */ |
db162d44 | 2251 | filename = tilde_expand (arg); |
3017564a | 2252 | make_cleanup (xfree, filename); |
c906108c | 2253 | } |
db162d44 | 2254 | else |
7a78ae4e ND |
2255 | if (argcnt == 1) |
2256 | { | |
2257 | /* The second argument is always the text address at which | |
c378eb4e | 2258 | to load the program. */ |
7a78ae4e ND |
2259 | sect_opts[section_index].name = ".text"; |
2260 | sect_opts[section_index].value = arg; | |
f414f22f | 2261 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2262 | { |
2263 | num_sect_opts *= 2; | |
5417f6dc | 2264 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2265 | xrealloc (sect_opts, |
5417f6dc | 2266 | num_sect_opts |
a39a16c4 MM |
2267 | * sizeof (struct sect_opt))); |
2268 | } | |
7a78ae4e ND |
2269 | } |
2270 | else | |
2271 | { | |
2272 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2273 | to an option. */ |
7a78ae4e ND |
2274 | |
2275 | if (*arg == '-') | |
2276 | { | |
78a4a9b9 AC |
2277 | if (strcmp (arg, "-readnow") == 0) |
2278 | flags |= OBJF_READNOW; | |
2279 | else if (strcmp (arg, "-s") == 0) | |
2280 | { | |
2281 | expecting_sec_name = 1; | |
2282 | expecting_sec_addr = 1; | |
2283 | } | |
7a78ae4e ND |
2284 | } |
2285 | else | |
2286 | { | |
2287 | if (expecting_sec_name) | |
db162d44 | 2288 | { |
7a78ae4e ND |
2289 | sect_opts[section_index].name = arg; |
2290 | expecting_sec_name = 0; | |
db162d44 EZ |
2291 | } |
2292 | else | |
7a78ae4e ND |
2293 | if (expecting_sec_addr) |
2294 | { | |
2295 | sect_opts[section_index].value = arg; | |
2296 | expecting_sec_addr = 0; | |
f414f22f | 2297 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2298 | { |
2299 | num_sect_opts *= 2; | |
5417f6dc | 2300 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2301 | xrealloc (sect_opts, |
5417f6dc | 2302 | num_sect_opts |
a39a16c4 MM |
2303 | * sizeof (struct sect_opt))); |
2304 | } | |
7a78ae4e ND |
2305 | } |
2306 | else | |
3e43a32a | 2307 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2308 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2309 | } |
2310 | } | |
c906108c | 2311 | } |
c906108c | 2312 | |
927890d0 JB |
2313 | /* This command takes at least two arguments. The first one is a |
2314 | filename, and the second is the address where this file has been | |
2315 | loaded. Abort now if this address hasn't been provided by the | |
2316 | user. */ | |
2317 | if (section_index < 1) | |
2318 | error (_("The address where %s has been loaded is missing"), filename); | |
2319 | ||
c378eb4e | 2320 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2321 | a sect_addr_info structure to be passed around to other |
2322 | functions. We have to split this up into separate print | |
bb599908 | 2323 | statements because hex_string returns a local static |
c378eb4e | 2324 | string. */ |
5417f6dc | 2325 | |
a3f17187 | 2326 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2327 | section_addrs = alloc_section_addr_info (section_index); |
2328 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2329 | for (i = 0; i < section_index; i++) |
c906108c | 2330 | { |
db162d44 EZ |
2331 | CORE_ADDR addr; |
2332 | char *val = sect_opts[i].value; | |
2333 | char *sec = sect_opts[i].name; | |
5417f6dc | 2334 | |
ae822768 | 2335 | addr = parse_and_eval_address (val); |
db162d44 | 2336 | |
db162d44 | 2337 | /* Here we store the section offsets in the order they were |
c378eb4e | 2338 | entered on the command line. */ |
a39a16c4 MM |
2339 | section_addrs->other[sec_num].name = sec; |
2340 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2341 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2342 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2343 | sec_num++; |
2344 | ||
5417f6dc | 2345 | /* The object's sections are initialized when a |
db162d44 | 2346 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2347 | This happens in reread_symbols. |
db162d44 EZ |
2348 | At this point, we don't know what file type this is, |
2349 | so we can't determine what section names are valid. */ | |
2acceee2 | 2350 | } |
d76488d8 | 2351 | section_addrs->num_sections = sec_num; |
db162d44 | 2352 | |
2acceee2 | 2353 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2354 | error (_("Not confirmed.")); |
c906108c | 2355 | |
7eedccfa PP |
2356 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2357 | section_addrs, flags); | |
c906108c SS |
2358 | |
2359 | /* Getting new symbols may change our opinion about what is | |
2360 | frameless. */ | |
2361 | reinit_frame_cache (); | |
db162d44 | 2362 | do_cleanups (my_cleanups); |
c906108c SS |
2363 | } |
2364 | \f | |
70992597 | 2365 | |
4ac39b97 JK |
2366 | typedef struct objfile *objfilep; |
2367 | ||
2368 | DEF_VEC_P (objfilep); | |
2369 | ||
c906108c SS |
2370 | /* Re-read symbols if a symbol-file has changed. */ |
2371 | void | |
fba45db2 | 2372 | reread_symbols (void) |
c906108c SS |
2373 | { |
2374 | struct objfile *objfile; | |
2375 | long new_modtime; | |
c906108c SS |
2376 | struct stat new_statbuf; |
2377 | int res; | |
4ac39b97 JK |
2378 | VEC (objfilep) *new_objfiles = NULL; |
2379 | struct cleanup *all_cleanups; | |
2380 | ||
2381 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2382 | |
2383 | /* With the addition of shared libraries, this should be modified, | |
2384 | the load time should be saved in the partial symbol tables, since | |
2385 | different tables may come from different source files. FIXME. | |
2386 | This routine should then walk down each partial symbol table | |
c378eb4e | 2387 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2388 | |
c5aa993b JM |
2389 | for (objfile = object_files; objfile; objfile = objfile->next) |
2390 | { | |
9cce227f TG |
2391 | /* solib-sunos.c creates one objfile with obfd. */ |
2392 | if (objfile->obfd == NULL) | |
2393 | continue; | |
2394 | ||
2395 | /* Separate debug objfiles are handled in the main objfile. */ | |
2396 | if (objfile->separate_debug_objfile_backlink) | |
2397 | continue; | |
2398 | ||
02aeec7b JB |
2399 | /* If this object is from an archive (what you usually create with |
2400 | `ar', often called a `static library' on most systems, though | |
2401 | a `shared library' on AIX is also an archive), then you should | |
2402 | stat on the archive name, not member name. */ | |
9cce227f TG |
2403 | if (objfile->obfd->my_archive) |
2404 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2405 | else | |
9cce227f TG |
2406 | res = stat (objfile->name, &new_statbuf); |
2407 | if (res != 0) | |
2408 | { | |
c378eb4e | 2409 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2410 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2411 | objfile->name); | |
2412 | continue; | |
2413 | } | |
2414 | new_modtime = new_statbuf.st_mtime; | |
2415 | if (new_modtime != objfile->mtime) | |
2416 | { | |
2417 | struct cleanup *old_cleanups; | |
2418 | struct section_offsets *offsets; | |
2419 | int num_offsets; | |
2420 | char *obfd_filename; | |
2421 | ||
2422 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2423 | objfile->name); | |
2424 | ||
2425 | /* There are various functions like symbol_file_add, | |
2426 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2427 | appear to do what we want. But they have various other | |
2428 | effects which we *don't* want. So we just do stuff | |
2429 | ourselves. We don't worry about mapped files (for one thing, | |
2430 | any mapped file will be out of date). */ | |
2431 | ||
2432 | /* If we get an error, blow away this objfile (not sure if | |
2433 | that is the correct response for things like shared | |
2434 | libraries). */ | |
2435 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2436 | /* We need to do this whenever any symbols go away. */ | |
2437 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2438 | ||
0ba1096a KT |
2439 | if (exec_bfd != NULL |
2440 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2441 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2442 | { |
2443 | /* Reload EXEC_BFD without asking anything. */ | |
2444 | ||
2445 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2446 | } | |
2447 | ||
f6eeced0 JK |
2448 | /* Keep the calls order approx. the same as in free_objfile. */ |
2449 | ||
2450 | /* Free the separate debug objfiles. It will be | |
2451 | automatically recreated by sym_read. */ | |
2452 | free_objfile_separate_debug (objfile); | |
2453 | ||
2454 | /* Remove any references to this objfile in the global | |
2455 | value lists. */ | |
2456 | preserve_values (objfile); | |
2457 | ||
2458 | /* Nuke all the state that we will re-read. Much of the following | |
2459 | code which sets things to NULL really is necessary to tell | |
2460 | other parts of GDB that there is nothing currently there. | |
2461 | ||
2462 | Try to keep the freeing order compatible with free_objfile. */ | |
2463 | ||
2464 | if (objfile->sf != NULL) | |
2465 | { | |
2466 | (*objfile->sf->sym_finish) (objfile); | |
2467 | } | |
2468 | ||
2469 | clear_objfile_data (objfile); | |
2470 | ||
e1507e95 | 2471 | /* Clean up any state BFD has sitting around. */ |
a4453b7e TT |
2472 | { |
2473 | struct bfd *obfd = objfile->obfd; | |
2474 | ||
2475 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2476 | /* Open the new BFD before freeing the old one, so that | |
2477 | the filename remains live. */ | |
08d2cd74 | 2478 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
e1507e95 TT |
2479 | if (objfile->obfd == NULL) |
2480 | { | |
2481 | /* We have to make a cleanup and error here, rather | |
2482 | than erroring later, because once we unref OBFD, | |
2483 | OBFD_FILENAME will be freed. */ | |
2484 | make_cleanup_bfd_unref (obfd); | |
2485 | error (_("Can't open %s to read symbols."), obfd_filename); | |
2486 | } | |
a4453b7e TT |
2487 | gdb_bfd_unref (obfd); |
2488 | } | |
2489 | ||
e1507e95 | 2490 | objfile->name = bfd_get_filename (objfile->obfd); |
9cce227f TG |
2491 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2492 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2493 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2494 | bfd_errmsg (bfd_get_error ())); | |
2495 | ||
2496 | /* Save the offsets, we will nuke them with the rest of the | |
2497 | objfile_obstack. */ | |
2498 | num_offsets = objfile->num_sections; | |
2499 | offsets = ((struct section_offsets *) | |
2500 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2501 | memcpy (offsets, objfile->section_offsets, | |
2502 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2503 | ||
9cce227f TG |
2504 | /* FIXME: Do we have to free a whole linked list, or is this |
2505 | enough? */ | |
2506 | if (objfile->global_psymbols.list) | |
2507 | xfree (objfile->global_psymbols.list); | |
2508 | memset (&objfile->global_psymbols, 0, | |
2509 | sizeof (objfile->global_psymbols)); | |
2510 | if (objfile->static_psymbols.list) | |
2511 | xfree (objfile->static_psymbols.list); | |
2512 | memset (&objfile->static_psymbols, 0, | |
2513 | sizeof (objfile->static_psymbols)); | |
2514 | ||
c378eb4e | 2515 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2516 | psymbol_bcache_free (objfile->psymbol_cache); |
2517 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f TG |
2518 | if (objfile->demangled_names_hash != NULL) |
2519 | { | |
2520 | htab_delete (objfile->demangled_names_hash); | |
2521 | objfile->demangled_names_hash = NULL; | |
2522 | } | |
2523 | obstack_free (&objfile->objfile_obstack, 0); | |
2524 | objfile->sections = NULL; | |
2525 | objfile->symtabs = NULL; | |
2526 | objfile->psymtabs = NULL; | |
2527 | objfile->psymtabs_addrmap = NULL; | |
2528 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2529 | objfile->template_symbols = NULL; |
9cce227f | 2530 | objfile->msymbols = NULL; |
9cce227f TG |
2531 | objfile->minimal_symbol_count = 0; |
2532 | memset (&objfile->msymbol_hash, 0, | |
2533 | sizeof (objfile->msymbol_hash)); | |
2534 | memset (&objfile->msymbol_demangled_hash, 0, | |
2535 | sizeof (objfile->msymbol_demangled_hash)); | |
2536 | ||
706e3705 TT |
2537 | set_objfile_per_bfd (objfile); |
2538 | ||
9cce227f TG |
2539 | /* obstack_init also initializes the obstack so it is |
2540 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2541 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2542 | obstack_init (&objfile->objfile_obstack); |
d82ea6a8 | 2543 | build_objfile_section_table (objfile); |
9cce227f TG |
2544 | terminate_minimal_symbol_table (objfile); |
2545 | ||
2546 | /* We use the same section offsets as from last time. I'm not | |
2547 | sure whether that is always correct for shared libraries. */ | |
2548 | objfile->section_offsets = (struct section_offsets *) | |
2549 | obstack_alloc (&objfile->objfile_obstack, | |
2550 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2551 | memcpy (objfile->section_offsets, offsets, | |
2552 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2553 | objfile->num_sections = num_offsets; | |
2554 | ||
2555 | /* What the hell is sym_new_init for, anyway? The concept of | |
2556 | distinguishing between the main file and additional files | |
2557 | in this way seems rather dubious. */ | |
2558 | if (objfile == symfile_objfile) | |
c906108c | 2559 | { |
9cce227f | 2560 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2561 | } |
9cce227f TG |
2562 | |
2563 | (*objfile->sf->sym_init) (objfile); | |
2564 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2565 | |
2566 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2567 | read_symbols (objfile, 0); | |
b11896a5 | 2568 | |
9cce227f | 2569 | if (!objfile_has_symbols (objfile)) |
c906108c | 2570 | { |
9cce227f TG |
2571 | wrap_here (""); |
2572 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2573 | wrap_here (""); | |
c5aa993b | 2574 | } |
9cce227f TG |
2575 | |
2576 | /* We're done reading the symbol file; finish off complaints. */ | |
2577 | clear_complaints (&symfile_complaints, 0, 1); | |
2578 | ||
2579 | /* Getting new symbols may change our opinion about what is | |
2580 | frameless. */ | |
2581 | ||
2582 | reinit_frame_cache (); | |
2583 | ||
2584 | /* Discard cleanups as symbol reading was successful. */ | |
2585 | discard_cleanups (old_cleanups); | |
2586 | ||
2587 | /* If the mtime has changed between the time we set new_modtime | |
2588 | and now, we *want* this to be out of date, so don't call stat | |
2589 | again now. */ | |
2590 | objfile->mtime = new_modtime; | |
9cce227f | 2591 | init_entry_point_info (objfile); |
4ac39b97 JK |
2592 | |
2593 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2594 | } |
2595 | } | |
c906108c | 2596 | |
4ac39b97 | 2597 | if (new_objfiles) |
ea53e89f | 2598 | { |
4ac39b97 JK |
2599 | int ix; |
2600 | ||
ff3536bc UW |
2601 | /* Notify objfiles that we've modified objfile sections. */ |
2602 | objfiles_changed (); | |
2603 | ||
c1e56572 | 2604 | clear_symtab_users (0); |
4ac39b97 JK |
2605 | |
2606 | /* clear_objfile_data for each objfile was called before freeing it and | |
2607 | observer_notify_new_objfile (NULL) has been called by | |
2608 | clear_symtab_users above. Notify the new files now. */ | |
2609 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2610 | observer_notify_new_objfile (objfile); | |
2611 | ||
ea53e89f JB |
2612 | /* At least one objfile has changed, so we can consider that |
2613 | the executable we're debugging has changed too. */ | |
781b42b0 | 2614 | observer_notify_executable_changed (); |
ea53e89f | 2615 | } |
4ac39b97 JK |
2616 | |
2617 | do_cleanups (all_cleanups); | |
c906108c | 2618 | } |
c906108c SS |
2619 | \f |
2620 | ||
c5aa993b JM |
2621 | |
2622 | typedef struct | |
2623 | { | |
2624 | char *ext; | |
c906108c | 2625 | enum language lang; |
c5aa993b JM |
2626 | } |
2627 | filename_language; | |
c906108c | 2628 | |
c5aa993b | 2629 | static filename_language *filename_language_table; |
c906108c SS |
2630 | static int fl_table_size, fl_table_next; |
2631 | ||
2632 | static void | |
fba45db2 | 2633 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2634 | { |
2635 | if (fl_table_next >= fl_table_size) | |
2636 | { | |
2637 | fl_table_size += 10; | |
5417f6dc | 2638 | filename_language_table = |
25bf3106 PM |
2639 | xrealloc (filename_language_table, |
2640 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2641 | } |
2642 | ||
4fcf66da | 2643 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2644 | filename_language_table[fl_table_next].lang = lang; |
2645 | fl_table_next++; | |
2646 | } | |
2647 | ||
2648 | static char *ext_args; | |
920d2a44 AC |
2649 | static void |
2650 | show_ext_args (struct ui_file *file, int from_tty, | |
2651 | struct cmd_list_element *c, const char *value) | |
2652 | { | |
3e43a32a MS |
2653 | fprintf_filtered (file, |
2654 | _("Mapping between filename extension " | |
2655 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2656 | value); |
2657 | } | |
c906108c SS |
2658 | |
2659 | static void | |
26c41df3 | 2660 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2661 | { |
2662 | int i; | |
2663 | char *cp = ext_args; | |
2664 | enum language lang; | |
2665 | ||
c378eb4e | 2666 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2667 | if (*cp != '.') |
8a3fe4f8 | 2668 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2669 | |
2670 | /* Find end of first arg. */ | |
c5aa993b | 2671 | while (*cp && !isspace (*cp)) |
c906108c SS |
2672 | cp++; |
2673 | ||
2674 | if (*cp == '\0') | |
3e43a32a MS |
2675 | error (_("'%s': two arguments required -- " |
2676 | "filename extension and language"), | |
c906108c SS |
2677 | ext_args); |
2678 | ||
c378eb4e | 2679 | /* Null-terminate first arg. */ |
c5aa993b | 2680 | *cp++ = '\0'; |
c906108c SS |
2681 | |
2682 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2683 | cp = skip_spaces (cp); |
c906108c SS |
2684 | |
2685 | if (*cp == '\0') | |
3e43a32a MS |
2686 | error (_("'%s': two arguments required -- " |
2687 | "filename extension and language"), | |
c906108c SS |
2688 | ext_args); |
2689 | ||
2690 | /* Lookup the language from among those we know. */ | |
2691 | lang = language_enum (cp); | |
2692 | ||
2693 | /* Now lookup the filename extension: do we already know it? */ | |
2694 | for (i = 0; i < fl_table_next; i++) | |
2695 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2696 | break; | |
2697 | ||
2698 | if (i >= fl_table_next) | |
2699 | { | |
c378eb4e | 2700 | /* New file extension. */ |
c906108c SS |
2701 | add_filename_language (ext_args, lang); |
2702 | } | |
2703 | else | |
2704 | { | |
c378eb4e | 2705 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2706 | |
2707 | /* if (from_tty) */ | |
2708 | /* query ("Really make files of type %s '%s'?", */ | |
2709 | /* ext_args, language_str (lang)); */ | |
2710 | ||
b8c9b27d | 2711 | xfree (filename_language_table[i].ext); |
4fcf66da | 2712 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2713 | filename_language_table[i].lang = lang; |
2714 | } | |
2715 | } | |
2716 | ||
2717 | static void | |
fba45db2 | 2718 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2719 | { |
2720 | int i; | |
2721 | ||
a3f17187 | 2722 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2723 | printf_filtered ("\n\n"); |
2724 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2725 | printf_filtered ("\t%s\t- %s\n", |
2726 | filename_language_table[i].ext, | |
c906108c SS |
2727 | language_str (filename_language_table[i].lang)); |
2728 | } | |
2729 | ||
2730 | static void | |
fba45db2 | 2731 | init_filename_language_table (void) |
c906108c | 2732 | { |
c378eb4e | 2733 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2734 | { |
2735 | fl_table_size = 20; | |
2736 | fl_table_next = 0; | |
c5aa993b | 2737 | filename_language_table = |
c906108c | 2738 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2739 | add_filename_language (".c", language_c); |
6aecb9c2 | 2740 | add_filename_language (".d", language_d); |
c5aa993b JM |
2741 | add_filename_language (".C", language_cplus); |
2742 | add_filename_language (".cc", language_cplus); | |
2743 | add_filename_language (".cp", language_cplus); | |
2744 | add_filename_language (".cpp", language_cplus); | |
2745 | add_filename_language (".cxx", language_cplus); | |
2746 | add_filename_language (".c++", language_cplus); | |
2747 | add_filename_language (".java", language_java); | |
c906108c | 2748 | add_filename_language (".class", language_java); |
da2cf7e0 | 2749 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2750 | add_filename_language (".f", language_fortran); |
2751 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2752 | add_filename_language (".for", language_fortran); |
2753 | add_filename_language (".FOR", language_fortran); | |
2754 | add_filename_language (".ftn", language_fortran); | |
2755 | add_filename_language (".FTN", language_fortran); | |
2756 | add_filename_language (".fpp", language_fortran); | |
2757 | add_filename_language (".FPP", language_fortran); | |
2758 | add_filename_language (".f90", language_fortran); | |
2759 | add_filename_language (".F90", language_fortran); | |
2760 | add_filename_language (".f95", language_fortran); | |
2761 | add_filename_language (".F95", language_fortran); | |
2762 | add_filename_language (".f03", language_fortran); | |
2763 | add_filename_language (".F03", language_fortran); | |
2764 | add_filename_language (".f08", language_fortran); | |
2765 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2766 | add_filename_language (".s", language_asm); |
aa707ed0 | 2767 | add_filename_language (".sx", language_asm); |
c5aa993b | 2768 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2769 | add_filename_language (".pas", language_pascal); |
2770 | add_filename_language (".p", language_pascal); | |
2771 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2772 | add_filename_language (".adb", language_ada); |
2773 | add_filename_language (".ads", language_ada); | |
2774 | add_filename_language (".a", language_ada); | |
2775 | add_filename_language (".ada", language_ada); | |
dde59185 | 2776 | add_filename_language (".dg", language_ada); |
c906108c SS |
2777 | } |
2778 | } | |
2779 | ||
2780 | enum language | |
dd786858 | 2781 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2782 | { |
2783 | int i; | |
2784 | char *cp; | |
2785 | ||
2786 | if (filename != NULL) | |
2787 | if ((cp = strrchr (filename, '.')) != NULL) | |
2788 | for (i = 0; i < fl_table_next; i++) | |
2789 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2790 | return filename_language_table[i].lang; | |
2791 | ||
2792 | return language_unknown; | |
2793 | } | |
2794 | \f | |
2795 | /* allocate_symtab: | |
2796 | ||
2797 | Allocate and partly initialize a new symbol table. Return a pointer | |
2798 | to it. error() if no space. | |
2799 | ||
2800 | Caller must set these fields: | |
c5aa993b JM |
2801 | LINETABLE(symtab) |
2802 | symtab->blockvector | |
2803 | symtab->dirname | |
2804 | symtab->free_code | |
2805 | symtab->free_ptr | |
c906108c SS |
2806 | */ |
2807 | ||
2808 | struct symtab * | |
72b9f47f | 2809 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2810 | { |
52f0bd74 | 2811 | struct symtab *symtab; |
c906108c SS |
2812 | |
2813 | symtab = (struct symtab *) | |
4a146b47 | 2814 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2815 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf | 2816 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
706e3705 | 2817 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2818 | symtab->fullname = NULL; |
2819 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2820 | symtab->debugformat = "unknown"; |
c906108c | 2821 | |
c378eb4e | 2822 | /* Hook it to the objfile it comes from. */ |
c906108c | 2823 | |
c5aa993b JM |
2824 | symtab->objfile = objfile; |
2825 | symtab->next = objfile->symtabs; | |
2826 | objfile->symtabs = symtab; | |
c906108c | 2827 | |
45cfd468 DE |
2828 | if (symtab_create_debug) |
2829 | { | |
2830 | /* Be a bit clever with debugging messages, and don't print objfile | |
2831 | every time, only when it changes. */ | |
2832 | static char *last_objfile_name = NULL; | |
2833 | ||
2834 | if (last_objfile_name == NULL | |
2835 | || strcmp (last_objfile_name, objfile->name) != 0) | |
2836 | { | |
2837 | xfree (last_objfile_name); | |
2838 | last_objfile_name = xstrdup (objfile->name); | |
2839 | fprintf_unfiltered (gdb_stdlog, | |
2840 | "Creating one or more symtabs for objfile %s ...\n", | |
2841 | last_objfile_name); | |
2842 | } | |
2843 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2844 | "Created symtab %s for module %s.\n", |
2845 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2846 | } |
2847 | ||
c906108c SS |
2848 | return (symtab); |
2849 | } | |
c906108c | 2850 | \f |
c5aa993b | 2851 | |
c906108c | 2852 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2853 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2854 | |
2855 | void | |
c1e56572 | 2856 | clear_symtab_users (int add_flags) |
c906108c SS |
2857 | { |
2858 | /* Someday, we should do better than this, by only blowing away | |
2859 | the things that really need to be blown. */ | |
c0501be5 DJ |
2860 | |
2861 | /* Clear the "current" symtab first, because it is no longer valid. | |
2862 | breakpoint_re_set may try to access the current symtab. */ | |
2863 | clear_current_source_symtab_and_line (); | |
2864 | ||
c906108c | 2865 | clear_displays (); |
c1e56572 JK |
2866 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2867 | breakpoint_re_set (); | |
1bfeeb0f | 2868 | clear_last_displayed_sal (); |
c906108c | 2869 | clear_pc_function_cache (); |
06d3b283 | 2870 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2871 | |
2872 | /* Clear globals which might have pointed into a removed objfile. | |
2873 | FIXME: It's not clear which of these are supposed to persist | |
2874 | between expressions and which ought to be reset each time. */ | |
2875 | expression_context_block = NULL; | |
2876 | innermost_block = NULL; | |
8756216b DP |
2877 | |
2878 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2879 | varobj_invalidate (); | |
2880 | ||
c906108c SS |
2881 | } |
2882 | ||
74b7792f AC |
2883 | static void |
2884 | clear_symtab_users_cleanup (void *ignore) | |
2885 | { | |
c1e56572 | 2886 | clear_symtab_users (0); |
74b7792f | 2887 | } |
c906108c | 2888 | \f |
c906108c SS |
2889 | /* OVERLAYS: |
2890 | The following code implements an abstraction for debugging overlay sections. | |
2891 | ||
2892 | The target model is as follows: | |
2893 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2894 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2895 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2896 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2897 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2898 | sections should be considered to be mapped from the VMA to the LMA. |
2899 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2900 | For instance, if a section has been mapped then its contents |
c5aa993b | 2901 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2902 | |
2903 | Two levels of debugger support for overlays are available. One is | |
2904 | "manual", in which the debugger relies on the user to tell it which | |
2905 | overlays are currently mapped. This level of support is | |
2906 | implemented entirely in the core debugger, and the information about | |
2907 | whether a section is mapped is kept in the objfile->obj_section table. | |
2908 | ||
2909 | The second level of support is "automatic", and is only available if | |
2910 | the target-specific code provides functionality to read the target's | |
2911 | overlay mapping table, and translate its contents for the debugger | |
2912 | (by updating the mapped state information in the obj_section tables). | |
2913 | ||
2914 | The interface is as follows: | |
c5aa993b JM |
2915 | User commands: |
2916 | overlay map <name> -- tell gdb to consider this section mapped | |
2917 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2918 | overlay list -- list the sections that GDB thinks are mapped | |
2919 | overlay read-target -- get the target's state of what's mapped | |
2920 | overlay off/manual/auto -- set overlay debugging state | |
2921 | Functional interface: | |
2922 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2923 | section, return that section. | |
5417f6dc | 2924 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2925 | the pc, either in its VMA or its LMA |
714835d5 | 2926 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2927 | section_is_overlay(sect): true if section's VMA != LMA |
2928 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2929 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2930 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2931 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2932 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2933 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2934 | either in VMA or LMA depending on whether | |
c378eb4e | 2935 | the symbol's section is currently mapped. */ |
c906108c SS |
2936 | |
2937 | /* Overlay debugging state: */ | |
2938 | ||
d874f1e2 | 2939 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2940 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2941 | |
c906108c | 2942 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2943 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2944 | SECTION is loaded at an address different from where it will "run". */ |
2945 | ||
2946 | int | |
714835d5 | 2947 | section_is_overlay (struct obj_section *section) |
c906108c | 2948 | { |
714835d5 UW |
2949 | if (overlay_debugging && section) |
2950 | { | |
2951 | bfd *abfd = section->objfile->obfd; | |
2952 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2953 | |
714835d5 UW |
2954 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2955 | && bfd_section_lma (abfd, bfd_section) | |
2956 | != bfd_section_vma (abfd, bfd_section)) | |
2957 | return 1; | |
2958 | } | |
c906108c SS |
2959 | |
2960 | return 0; | |
2961 | } | |
2962 | ||
2963 | /* Function: overlay_invalidate_all (void) | |
2964 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2965 | ||
2966 | static void | |
fba45db2 | 2967 | overlay_invalidate_all (void) |
c906108c | 2968 | { |
c5aa993b | 2969 | struct objfile *objfile; |
c906108c SS |
2970 | struct obj_section *sect; |
2971 | ||
2972 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2973 | if (section_is_overlay (sect)) |
2974 | sect->ovly_mapped = -1; | |
c906108c SS |
2975 | } |
2976 | ||
714835d5 | 2977 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2978 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2979 | |
2980 | Access to the ovly_mapped flag is restricted to this function, so | |
2981 | that we can do automatic update. If the global flag | |
2982 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2983 | overlay_invalidate_all. If the mapped state of the particular | |
2984 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2985 | ||
714835d5 UW |
2986 | int |
2987 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2988 | { |
9216df95 UW |
2989 | struct gdbarch *gdbarch; |
2990 | ||
714835d5 | 2991 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2992 | return 0; |
2993 | ||
c5aa993b | 2994 | switch (overlay_debugging) |
c906108c SS |
2995 | { |
2996 | default: | |
d874f1e2 | 2997 | case ovly_off: |
c5aa993b | 2998 | return 0; /* overlay debugging off */ |
d874f1e2 | 2999 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3000 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3001 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3002 | gdbarch = get_objfile_arch (osect->objfile); |
3003 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3004 | { |
3005 | if (overlay_cache_invalid) | |
3006 | { | |
3007 | overlay_invalidate_all (); | |
3008 | overlay_cache_invalid = 0; | |
3009 | } | |
3010 | if (osect->ovly_mapped == -1) | |
9216df95 | 3011 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3012 | } |
3013 | /* fall thru to manual case */ | |
d874f1e2 | 3014 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3015 | return osect->ovly_mapped == 1; |
3016 | } | |
3017 | } | |
3018 | ||
c906108c SS |
3019 | /* Function: pc_in_unmapped_range |
3020 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3021 | ||
3022 | CORE_ADDR | |
714835d5 | 3023 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3024 | { |
714835d5 UW |
3025 | if (section_is_overlay (section)) |
3026 | { | |
3027 | bfd *abfd = section->objfile->obfd; | |
3028 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3029 | |
714835d5 UW |
3030 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3031 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3032 | CORE_ADDR offset = obj_section_offset (section); | |
3033 | ||
3034 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3035 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3036 | return 1; | |
3037 | } | |
c906108c | 3038 | |
c906108c SS |
3039 | return 0; |
3040 | } | |
3041 | ||
3042 | /* Function: pc_in_mapped_range | |
3043 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3044 | ||
3045 | CORE_ADDR | |
714835d5 | 3046 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3047 | { |
714835d5 UW |
3048 | if (section_is_overlay (section)) |
3049 | { | |
3050 | if (obj_section_addr (section) <= pc | |
3051 | && pc < obj_section_endaddr (section)) | |
3052 | return 1; | |
3053 | } | |
c906108c | 3054 | |
c906108c SS |
3055 | return 0; |
3056 | } | |
3057 | ||
9ec8e6a0 JB |
3058 | |
3059 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3060 | otherwise. */ | |
b9362cc7 | 3061 | static int |
714835d5 | 3062 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3063 | { |
714835d5 UW |
3064 | CORE_ADDR a_start = obj_section_addr (a); |
3065 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3066 | CORE_ADDR b_start = obj_section_addr (b); | |
3067 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3068 | |
3069 | return (a_start < b_end && b_start < a_end); | |
3070 | } | |
3071 | ||
c906108c SS |
3072 | /* Function: overlay_unmapped_address (PC, SECTION) |
3073 | Returns the address corresponding to PC in the unmapped (load) range. | |
3074 | May be the same as PC. */ | |
3075 | ||
3076 | CORE_ADDR | |
714835d5 | 3077 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3078 | { |
714835d5 UW |
3079 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3080 | { | |
3081 | bfd *abfd = section->objfile->obfd; | |
3082 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3083 | |
714835d5 UW |
3084 | return pc + bfd_section_lma (abfd, bfd_section) |
3085 | - bfd_section_vma (abfd, bfd_section); | |
3086 | } | |
c906108c SS |
3087 | |
3088 | return pc; | |
3089 | } | |
3090 | ||
3091 | /* Function: overlay_mapped_address (PC, SECTION) | |
3092 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3093 | May be the same as PC. */ | |
3094 | ||
3095 | CORE_ADDR | |
714835d5 | 3096 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3097 | { |
714835d5 UW |
3098 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3099 | { | |
3100 | bfd *abfd = section->objfile->obfd; | |
3101 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3102 | |
714835d5 UW |
3103 | return pc + bfd_section_vma (abfd, bfd_section) |
3104 | - bfd_section_lma (abfd, bfd_section); | |
3105 | } | |
c906108c SS |
3106 | |
3107 | return pc; | |
3108 | } | |
3109 | ||
3110 | ||
5417f6dc | 3111 | /* Function: symbol_overlayed_address |
c906108c SS |
3112 | Return one of two addresses (relative to the VMA or to the LMA), |
3113 | depending on whether the section is mapped or not. */ | |
3114 | ||
c5aa993b | 3115 | CORE_ADDR |
714835d5 | 3116 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3117 | { |
3118 | if (overlay_debugging) | |
3119 | { | |
c378eb4e | 3120 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3121 | if (section == 0) |
3122 | return address; | |
c378eb4e MS |
3123 | /* If the symbol's section is not an overlay, just return its |
3124 | address. */ | |
c906108c SS |
3125 | if (!section_is_overlay (section)) |
3126 | return address; | |
c378eb4e | 3127 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3128 | if (section_is_mapped (section)) |
3129 | return address; | |
3130 | /* | |
3131 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3132 | * then return its LOADED address rather than its vma address!! | |
3133 | */ | |
3134 | return overlay_unmapped_address (address, section); | |
3135 | } | |
3136 | return address; | |
3137 | } | |
3138 | ||
5417f6dc | 3139 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3140 | Return the best-match overlay section for PC: |
3141 | If PC matches a mapped overlay section's VMA, return that section. | |
3142 | Else if PC matches an unmapped section's VMA, return that section. | |
3143 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3144 | ||
714835d5 | 3145 | struct obj_section * |
fba45db2 | 3146 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3147 | { |
c5aa993b | 3148 | struct objfile *objfile; |
c906108c SS |
3149 | struct obj_section *osect, *best_match = NULL; |
3150 | ||
3151 | if (overlay_debugging) | |
3152 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3153 | if (section_is_overlay (osect)) |
c5aa993b | 3154 | { |
714835d5 | 3155 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3156 | { |
714835d5 UW |
3157 | if (section_is_mapped (osect)) |
3158 | return osect; | |
c5aa993b JM |
3159 | else |
3160 | best_match = osect; | |
3161 | } | |
714835d5 | 3162 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3163 | best_match = osect; |
3164 | } | |
714835d5 | 3165 | return best_match; |
c906108c SS |
3166 | } |
3167 | ||
3168 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3169 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3170 | currently marked as MAPPED, return that section. Else return NULL. */ |
3171 | ||
714835d5 | 3172 | struct obj_section * |
fba45db2 | 3173 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3174 | { |
c5aa993b | 3175 | struct objfile *objfile; |
c906108c SS |
3176 | struct obj_section *osect; |
3177 | ||
3178 | if (overlay_debugging) | |
3179 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3180 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3181 | return osect; | |
c906108c SS |
3182 | |
3183 | return NULL; | |
3184 | } | |
3185 | ||
3186 | /* Function: list_overlays_command | |
c378eb4e | 3187 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3188 | |
5d3055ad | 3189 | static void |
fba45db2 | 3190 | list_overlays_command (char *args, int from_tty) |
c906108c | 3191 | { |
c5aa993b JM |
3192 | int nmapped = 0; |
3193 | struct objfile *objfile; | |
c906108c SS |
3194 | struct obj_section *osect; |
3195 | ||
3196 | if (overlay_debugging) | |
3197 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3198 | if (section_is_mapped (osect)) |
c5aa993b | 3199 | { |
5af949e3 | 3200 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3201 | const char *name; |
3202 | bfd_vma lma, vma; | |
3203 | int size; | |
3204 | ||
3205 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3206 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3207 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3208 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3209 | ||
3210 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3211 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3212 | puts_filtered (" - "); |
5af949e3 | 3213 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3214 | printf_filtered (", mapped at "); |
5af949e3 | 3215 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3216 | puts_filtered (" - "); |
5af949e3 | 3217 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3218 | puts_filtered ("\n"); |
3219 | ||
3220 | nmapped++; | |
3221 | } | |
c906108c | 3222 | if (nmapped == 0) |
a3f17187 | 3223 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3224 | } |
3225 | ||
3226 | /* Function: map_overlay_command | |
3227 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3228 | ||
5d3055ad | 3229 | static void |
fba45db2 | 3230 | map_overlay_command (char *args, int from_tty) |
c906108c | 3231 | { |
c5aa993b JM |
3232 | struct objfile *objfile, *objfile2; |
3233 | struct obj_section *sec, *sec2; | |
c906108c SS |
3234 | |
3235 | if (!overlay_debugging) | |
3e43a32a MS |
3236 | error (_("Overlay debugging not enabled. Use " |
3237 | "either the 'overlay auto' or\n" | |
3238 | "the 'overlay manual' command.")); | |
c906108c SS |
3239 | |
3240 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3241 | error (_("Argument required: name of an overlay section")); |
c906108c | 3242 | |
c378eb4e | 3243 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3244 | ALL_OBJSECTIONS (objfile, sec) |
3245 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3246 | { |
c378eb4e | 3247 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3248 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3249 | continue; /* not an overlay section */ |
3250 | ||
c378eb4e | 3251 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3252 | sec->ovly_mapped = 1; |
3253 | ||
3254 | /* Next, make a pass and unmap any sections that are | |
3255 | overlapped by this new section: */ | |
3256 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3257 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3258 | { |
3259 | if (info_verbose) | |
a3f17187 | 3260 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3261 | bfd_section_name (objfile->obfd, |
3262 | sec2->the_bfd_section)); | |
c378eb4e | 3263 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3264 | } |
3265 | return; | |
3266 | } | |
8a3fe4f8 | 3267 | error (_("No overlay section called %s"), args); |
c906108c SS |
3268 | } |
3269 | ||
3270 | /* Function: unmap_overlay_command | |
5417f6dc | 3271 | Mark the overlay section as unmapped |
c906108c SS |
3272 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3273 | ||
5d3055ad | 3274 | static void |
fba45db2 | 3275 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3276 | { |
c5aa993b | 3277 | struct objfile *objfile; |
c906108c SS |
3278 | struct obj_section *sec; |
3279 | ||
3280 | if (!overlay_debugging) | |
3e43a32a MS |
3281 | error (_("Overlay debugging not enabled. " |
3282 | "Use either the 'overlay auto' or\n" | |
3283 | "the 'overlay manual' command.")); | |
c906108c SS |
3284 | |
3285 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3286 | error (_("Argument required: name of an overlay section")); |
c906108c | 3287 | |
c378eb4e | 3288 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3289 | ALL_OBJSECTIONS (objfile, sec) |
3290 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3291 | { |
3292 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3293 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3294 | sec->ovly_mapped = 0; |
3295 | return; | |
3296 | } | |
8a3fe4f8 | 3297 | error (_("No overlay section called %s"), args); |
c906108c SS |
3298 | } |
3299 | ||
3300 | /* Function: overlay_auto_command | |
3301 | A utility command to turn on overlay debugging. | |
c378eb4e | 3302 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3303 | |
3304 | static void | |
fba45db2 | 3305 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3306 | { |
d874f1e2 | 3307 | overlay_debugging = ovly_auto; |
1900040c | 3308 | enable_overlay_breakpoints (); |
c906108c | 3309 | if (info_verbose) |
a3f17187 | 3310 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3311 | } |
3312 | ||
3313 | /* Function: overlay_manual_command | |
3314 | A utility command to turn on overlay debugging. | |
c378eb4e | 3315 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3316 | |
3317 | static void | |
fba45db2 | 3318 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3319 | { |
d874f1e2 | 3320 | overlay_debugging = ovly_on; |
1900040c | 3321 | disable_overlay_breakpoints (); |
c906108c | 3322 | if (info_verbose) |
a3f17187 | 3323 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3324 | } |
3325 | ||
3326 | /* Function: overlay_off_command | |
3327 | A utility command to turn on overlay debugging. | |
c378eb4e | 3328 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3329 | |
3330 | static void | |
fba45db2 | 3331 | overlay_off_command (char *args, int from_tty) |
c906108c | 3332 | { |
d874f1e2 | 3333 | overlay_debugging = ovly_off; |
1900040c | 3334 | disable_overlay_breakpoints (); |
c906108c | 3335 | if (info_verbose) |
a3f17187 | 3336 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3337 | } |
3338 | ||
3339 | static void | |
fba45db2 | 3340 | overlay_load_command (char *args, int from_tty) |
c906108c | 3341 | { |
e17c207e UW |
3342 | struct gdbarch *gdbarch = get_current_arch (); |
3343 | ||
3344 | if (gdbarch_overlay_update_p (gdbarch)) | |
3345 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3346 | else |
8a3fe4f8 | 3347 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3348 | } |
3349 | ||
3350 | /* Function: overlay_command | |
c378eb4e | 3351 | A place-holder for a mis-typed command. */ |
c906108c | 3352 | |
c378eb4e | 3353 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3354 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3355 | |
3356 | static void | |
fba45db2 | 3357 | overlay_command (char *args, int from_tty) |
c906108c | 3358 | { |
c5aa993b | 3359 | printf_unfiltered |
c906108c SS |
3360 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3361 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3362 | } | |
3363 | ||
3364 | ||
3365 | /* Target Overlays for the "Simplest" overlay manager: | |
3366 | ||
5417f6dc RM |
3367 | This is GDB's default target overlay layer. It works with the |
3368 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3369 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3370 | so targets that use a different runtime overlay manager can |
c906108c SS |
3371 | substitute their own overlay_update function and take over the |
3372 | function pointer. | |
3373 | ||
3374 | The overlay_update function pokes around in the target's data structures | |
3375 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3376 | this information. | |
3377 | ||
3378 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3379 | unsigned _novlys; /# number of overlay sections #/ |
3380 | unsigned _ovly_table[_novlys][4] = { | |
3381 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3382 | {..., ..., ..., ...}, | |
3383 | } | |
3384 | unsigned _novly_regions; /# number of overlay regions #/ | |
3385 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3386 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3387 | {..., ..., ...}, | |
3388 | } | |
c906108c SS |
3389 | These functions will attempt to update GDB's mappedness state in the |
3390 | symbol section table, based on the target's mappedness state. | |
3391 | ||
3392 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3393 | attempt to detect when the cached copy is invalidated. The main | |
3394 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3395 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3396 | the target (whenever possible). */ |
c906108c SS |
3397 | |
3398 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3399 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3400 | static unsigned cache_novlys = 0; |
c906108c | 3401 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3402 | enum ovly_index |
3403 | { | |
3404 | VMA, SIZE, LMA, MAPPED | |
3405 | }; | |
c906108c | 3406 | |
c378eb4e | 3407 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3408 | static void |
fba45db2 | 3409 | simple_free_overlay_table (void) |
c906108c SS |
3410 | { |
3411 | if (cache_ovly_table) | |
b8c9b27d | 3412 | xfree (cache_ovly_table); |
c5aa993b | 3413 | cache_novlys = 0; |
c906108c SS |
3414 | cache_ovly_table = NULL; |
3415 | cache_ovly_table_base = 0; | |
3416 | } | |
3417 | ||
9216df95 | 3418 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3419 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3420 | static void |
9216df95 | 3421 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3422 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3423 | { |
c378eb4e | 3424 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3425 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3426 | int i; |
c906108c | 3427 | |
9216df95 | 3428 | read_memory (memaddr, buf, len * size); |
c906108c | 3429 | for (i = 0; i < len; i++) |
e17a4113 | 3430 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3431 | } |
3432 | ||
3433 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3434 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3435 | static int |
fba45db2 | 3436 | simple_read_overlay_table (void) |
c906108c | 3437 | { |
0d43edd1 | 3438 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3439 | struct gdbarch *gdbarch; |
3440 | int word_size; | |
e17a4113 | 3441 | enum bfd_endian byte_order; |
c906108c SS |
3442 | |
3443 | simple_free_overlay_table (); | |
9b27852e | 3444 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3445 | if (! novlys_msym) |
c906108c | 3446 | { |
8a3fe4f8 | 3447 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3448 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3449 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3450 | return 0; |
c906108c | 3451 | } |
0d43edd1 | 3452 | |
9b27852e | 3453 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3454 | if (! ovly_table_msym) |
3455 | { | |
8a3fe4f8 | 3456 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3457 | "`_ovly_table' array\n" |
8a3fe4f8 | 3458 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3459 | return 0; |
3460 | } | |
3461 | ||
9216df95 UW |
3462 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3463 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3464 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3465 | |
e17a4113 UW |
3466 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3467 | 4, byte_order); | |
0d43edd1 JB |
3468 | cache_ovly_table |
3469 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3470 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3471 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3472 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3473 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3474 | |
c5aa993b | 3475 | return 1; /* SUCCESS */ |
c906108c SS |
3476 | } |
3477 | ||
5417f6dc | 3478 | /* Function: simple_overlay_update_1 |
c906108c SS |
3479 | A helper function for simple_overlay_update. Assuming a cached copy |
3480 | of _ovly_table exists, look through it to find an entry whose vma, | |
3481 | lma and size match those of OSECT. Re-read the entry and make sure | |
3482 | it still matches OSECT (else the table may no longer be valid). | |
3483 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3484 | success, 0 for failure. */ | |
3485 | ||
3486 | static int | |
fba45db2 | 3487 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3488 | { |
3489 | int i, size; | |
fbd35540 MS |
3490 | bfd *obfd = osect->objfile->obfd; |
3491 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3492 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3493 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3494 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3495 | |
2c500098 | 3496 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3497 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3498 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3499 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3500 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3501 | { |
9216df95 UW |
3502 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3503 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3504 | 4, word_size, byte_order); |
fbd35540 MS |
3505 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3506 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3507 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3508 | { |
3509 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3510 | return 1; | |
3511 | } | |
c378eb4e | 3512 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3513 | return 0; |
3514 | } | |
3515 | return 0; | |
3516 | } | |
3517 | ||
3518 | /* Function: simple_overlay_update | |
5417f6dc RM |
3519 | If OSECT is NULL, then update all sections' mapped state |
3520 | (after re-reading the entire target _ovly_table). | |
3521 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3522 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3523 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3524 | re-read the entire cache, and go ahead and update all sections. */ |
3525 | ||
1c772458 | 3526 | void |
fba45db2 | 3527 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3528 | { |
c5aa993b | 3529 | struct objfile *objfile; |
c906108c | 3530 | |
c378eb4e | 3531 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3532 | if (osect) |
c378eb4e | 3533 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3534 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3535 | { |
3536 | /* Does its cached location match what's currently in the | |
3537 | symtab? */ | |
3538 | struct minimal_symbol *minsym | |
3539 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3540 | ||
3541 | if (minsym == NULL) | |
3542 | error (_("Error reading inferior's overlay table: couldn't " | |
3543 | "find `_ovly_table' array\n" | |
3544 | "in inferior. Use `overlay manual' mode.")); | |
3545 | ||
3546 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3547 | /* Then go ahead and try to look up this single section in | |
3548 | the cache. */ | |
3549 | if (simple_overlay_update_1 (osect)) | |
3550 | /* Found it! We're done. */ | |
3551 | return; | |
3552 | } | |
c906108c SS |
3553 | |
3554 | /* Cached table no good: need to read the entire table anew. | |
3555 | Or else we want all the sections, in which case it's actually | |
3556 | more efficient to read the whole table in one block anyway. */ | |
3557 | ||
0d43edd1 JB |
3558 | if (! simple_read_overlay_table ()) |
3559 | return; | |
3560 | ||
c378eb4e | 3561 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3562 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3563 | if (section_is_overlay (osect)) |
c5aa993b JM |
3564 | { |
3565 | int i, size; | |
fbd35540 MS |
3566 | bfd *obfd = osect->objfile->obfd; |
3567 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3568 | |
2c500098 | 3569 | size = bfd_get_section_size (bsect); |
c5aa993b | 3570 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3571 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3572 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3573 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3574 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3575 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3576 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3577 | } |
3578 | } | |
c906108c SS |
3579 | } |
3580 | ||
086df311 DJ |
3581 | /* Set the output sections and output offsets for section SECTP in |
3582 | ABFD. The relocation code in BFD will read these offsets, so we | |
3583 | need to be sure they're initialized. We map each section to itself, | |
3584 | with no offset; this means that SECTP->vma will be honored. */ | |
3585 | ||
3586 | static void | |
3587 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3588 | { | |
3589 | sectp->output_section = sectp; | |
3590 | sectp->output_offset = 0; | |
3591 | } | |
3592 | ||
ac8035ab TG |
3593 | /* Default implementation for sym_relocate. */ |
3594 | ||
3595 | ||
3596 | bfd_byte * | |
3597 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3598 | bfd_byte *buf) | |
3599 | { | |
3019eac3 DE |
3600 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3601 | DWO file. */ | |
3602 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3603 | |
3604 | /* We're only interested in sections with relocation | |
3605 | information. */ | |
3606 | if ((sectp->flags & SEC_RELOC) == 0) | |
3607 | return NULL; | |
3608 | ||
3609 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3610 | all sections begin at 0. */ | |
3611 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3612 | ||
3613 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3614 | } | |
3615 | ||
086df311 DJ |
3616 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3617 | contents are stored in BUF if it is non-NULL, or returned in a | |
3618 | malloc'd buffer otherwise. | |
3619 | ||
3620 | For some platforms and debug info formats, shared libraries contain | |
3621 | relocations against the debug sections (particularly for DWARF-2; | |
3622 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3623 | the version of the linker in use). Also, ELF object files naturally | |
3624 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3625 | the relocations in order to get the locations of symbols correct. |
3626 | Another example that may require relocation processing, is the | |
3627 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3628 | debug section. */ | |
086df311 DJ |
3629 | |
3630 | bfd_byte * | |
ac8035ab TG |
3631 | symfile_relocate_debug_section (struct objfile *objfile, |
3632 | asection *sectp, bfd_byte *buf) | |
086df311 | 3633 | { |
ac8035ab | 3634 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3635 | |
ac8035ab | 3636 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3637 | } |
c906108c | 3638 | |
31d99776 DJ |
3639 | struct symfile_segment_data * |
3640 | get_symfile_segment_data (bfd *abfd) | |
3641 | { | |
00b5771c | 3642 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3643 | |
3644 | if (sf == NULL) | |
3645 | return NULL; | |
3646 | ||
3647 | return sf->sym_segments (abfd); | |
3648 | } | |
3649 | ||
3650 | void | |
3651 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3652 | { | |
3653 | xfree (data->segment_bases); | |
3654 | xfree (data->segment_sizes); | |
3655 | xfree (data->segment_info); | |
3656 | xfree (data); | |
3657 | } | |
3658 | ||
28c32713 JB |
3659 | |
3660 | /* Given: | |
3661 | - DATA, containing segment addresses from the object file ABFD, and | |
3662 | the mapping from ABFD's sections onto the segments that own them, | |
3663 | and | |
3664 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3665 | segment addresses reported by the target, | |
3666 | store the appropriate offsets for each section in OFFSETS. | |
3667 | ||
3668 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3669 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3670 | ||
8d385431 DJ |
3671 | If there are more entries, then ignore the extra. The target may |
3672 | not be able to distinguish between an empty data segment and a | |
3673 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 | 3674 | int |
3189cb12 DE |
3675 | symfile_map_offsets_to_segments (bfd *abfd, |
3676 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3677 | struct section_offsets *offsets, |
3678 | int num_segment_bases, | |
3679 | const CORE_ADDR *segment_bases) | |
3680 | { | |
3681 | int i; | |
3682 | asection *sect; | |
3683 | ||
28c32713 JB |
3684 | /* It doesn't make sense to call this function unless you have some |
3685 | segment base addresses. */ | |
202b96c1 | 3686 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3687 | |
31d99776 DJ |
3688 | /* If we do not have segment mappings for the object file, we |
3689 | can not relocate it by segments. */ | |
3690 | gdb_assert (data != NULL); | |
3691 | gdb_assert (data->num_segments > 0); | |
3692 | ||
31d99776 DJ |
3693 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3694 | { | |
31d99776 DJ |
3695 | int which = data->segment_info[i]; |
3696 | ||
28c32713 JB |
3697 | gdb_assert (0 <= which && which <= data->num_segments); |
3698 | ||
3699 | /* Don't bother computing offsets for sections that aren't | |
3700 | loaded as part of any segment. */ | |
3701 | if (! which) | |
3702 | continue; | |
3703 | ||
3704 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3705 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3706 | if (which > num_segment_bases) |
28c32713 | 3707 | which = num_segment_bases; |
31d99776 | 3708 | |
28c32713 JB |
3709 | offsets->offsets[i] = (segment_bases[which - 1] |
3710 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3711 | } |
3712 | ||
3713 | return 1; | |
3714 | } | |
3715 | ||
3716 | static void | |
3717 | symfile_find_segment_sections (struct objfile *objfile) | |
3718 | { | |
3719 | bfd *abfd = objfile->obfd; | |
3720 | int i; | |
3721 | asection *sect; | |
3722 | struct symfile_segment_data *data; | |
3723 | ||
3724 | data = get_symfile_segment_data (objfile->obfd); | |
3725 | if (data == NULL) | |
3726 | return; | |
3727 | ||
3728 | if (data->num_segments != 1 && data->num_segments != 2) | |
3729 | { | |
3730 | free_symfile_segment_data (data); | |
3731 | return; | |
3732 | } | |
3733 | ||
3734 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3735 | { | |
31d99776 DJ |
3736 | int which = data->segment_info[i]; |
3737 | ||
3738 | if (which == 1) | |
3739 | { | |
3740 | if (objfile->sect_index_text == -1) | |
3741 | objfile->sect_index_text = sect->index; | |
3742 | ||
3743 | if (objfile->sect_index_rodata == -1) | |
3744 | objfile->sect_index_rodata = sect->index; | |
3745 | } | |
3746 | else if (which == 2) | |
3747 | { | |
3748 | if (objfile->sect_index_data == -1) | |
3749 | objfile->sect_index_data = sect->index; | |
3750 | ||
3751 | if (objfile->sect_index_bss == -1) | |
3752 | objfile->sect_index_bss = sect->index; | |
3753 | } | |
3754 | } | |
3755 | ||
3756 | free_symfile_segment_data (data); | |
3757 | } | |
3758 | ||
c906108c | 3759 | void |
fba45db2 | 3760 | _initialize_symfile (void) |
c906108c SS |
3761 | { |
3762 | struct cmd_list_element *c; | |
c5aa993b | 3763 | |
1a966eab AC |
3764 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3765 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3766 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3767 | to execute."), &cmdlist); |
5ba2abeb | 3768 | set_cmd_completer (c, filename_completer); |
c906108c | 3769 | |
1a966eab | 3770 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3771 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3772 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3773 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3774 | The optional arguments are section-name section-address pairs and\n\ |
3775 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3776 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3777 | &cmdlist); |
5ba2abeb | 3778 | set_cmd_completer (c, filename_completer); |
c906108c | 3779 | |
1a966eab AC |
3780 | c = add_cmd ("load", class_files, load_command, _("\ |
3781 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3782 | for access from GDB.\n\ |
3783 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3784 | set_cmd_completer (c, filename_completer); |
c906108c | 3785 | |
c5aa993b | 3786 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3787 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3788 | "overlay ", 0, &cmdlist); |
3789 | ||
3790 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3791 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3792 | ||
c5aa993b | 3793 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3794 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3795 | |
c5aa993b | 3796 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3797 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3798 | |
c5aa993b | 3799 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3800 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3801 | |
c5aa993b | 3802 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3803 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3804 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3805 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3806 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3807 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3808 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3809 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3810 | |
3811 | /* Filename extension to source language lookup table: */ | |
3812 | init_filename_language_table (); | |
26c41df3 AC |
3813 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3814 | &ext_args, _("\ | |
3815 | Set mapping between filename extension and source language."), _("\ | |
3816 | Show mapping between filename extension and source language."), _("\ | |
3817 | Usage: set extension-language .foo bar"), | |
3818 | set_ext_lang_command, | |
920d2a44 | 3819 | show_ext_args, |
26c41df3 | 3820 | &setlist, &showlist); |
c906108c | 3821 | |
c5aa993b | 3822 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3823 | _("All filename extensions associated with a source language.")); |
917317f4 | 3824 | |
525226b5 AC |
3825 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3826 | &debug_file_directory, _("\ | |
24ddea62 JK |
3827 | Set the directories where separate debug symbols are searched for."), _("\ |
3828 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3829 | Separate debug symbols are first searched for in the same\n\ |
3830 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3831 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3832 | each global debug-file-directory component prepended."), |
525226b5 | 3833 | NULL, |
920d2a44 | 3834 | show_debug_file_directory, |
525226b5 | 3835 | &setlist, &showlist); |
c906108c | 3836 | } |