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 | ||
a39a16c4 MM |
200 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
201 | ||
202 | struct section_addr_info * | |
203 | alloc_section_addr_info (size_t num_sections) | |
204 | { | |
205 | struct section_addr_info *sap; | |
206 | size_t size; | |
207 | ||
208 | size = (sizeof (struct section_addr_info) | |
209 | + sizeof (struct other_sections) * (num_sections - 1)); | |
210 | sap = (struct section_addr_info *) xmalloc (size); | |
211 | memset (sap, 0, size); | |
212 | sap->num_sections = num_sections; | |
213 | ||
214 | return sap; | |
215 | } | |
62557bbc KB |
216 | |
217 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 218 | an existing section table. */ |
62557bbc KB |
219 | |
220 | extern struct section_addr_info * | |
0542c86d PA |
221 | build_section_addr_info_from_section_table (const struct target_section *start, |
222 | const struct target_section *end) | |
62557bbc KB |
223 | { |
224 | struct section_addr_info *sap; | |
0542c86d | 225 | const struct target_section *stp; |
62557bbc KB |
226 | int oidx; |
227 | ||
a39a16c4 | 228 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
229 | |
230 | for (stp = start, oidx = 0; stp != end; stp++) | |
231 | { | |
5417f6dc | 232 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 233 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 234 | && oidx < end - start) |
62557bbc KB |
235 | { |
236 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 237 | sap->other[oidx].name |
fbd35540 | 238 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
239 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
240 | oidx++; | |
241 | } | |
242 | } | |
243 | ||
244 | return sap; | |
245 | } | |
246 | ||
82ccf5a5 | 247 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 248 | |
82ccf5a5 JK |
249 | static struct section_addr_info * |
250 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
251 | { |
252 | struct section_addr_info *sap; | |
253 | int i; | |
254 | struct bfd_section *sec; | |
255 | ||
82ccf5a5 JK |
256 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
257 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
258 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 259 | { |
82ccf5a5 JK |
260 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
261 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
012836ea JK |
262 | sap->other[i].sectindex = sec->index; |
263 | i++; | |
264 | } | |
089b4803 TG |
265 | return sap; |
266 | } | |
267 | ||
82ccf5a5 JK |
268 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
269 | ||
270 | struct section_addr_info * | |
271 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
272 | { | |
273 | struct section_addr_info *sap; | |
274 | int i; | |
275 | ||
276 | /* Before reread_symbols gets rewritten it is not safe to call: | |
277 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
278 | */ | |
279 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
280 | for (i = 0; i < sap->num_sections && sap->other[i].name; i++) | |
281 | { | |
282 | int sectindex = sap->other[i].sectindex; | |
283 | ||
284 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
285 | } | |
286 | return sap; | |
287 | } | |
62557bbc | 288 | |
c378eb4e | 289 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
290 | |
291 | extern void | |
292 | free_section_addr_info (struct section_addr_info *sap) | |
293 | { | |
294 | int idx; | |
295 | ||
a39a16c4 | 296 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 297 | if (sap->other[idx].name) |
b8c9b27d KB |
298 | xfree (sap->other[idx].name); |
299 | xfree (sap); | |
62557bbc KB |
300 | } |
301 | ||
302 | ||
e8289572 JB |
303 | /* Initialize OBJFILE's sect_index_* members. */ |
304 | static void | |
305 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 306 | { |
e8289572 | 307 | asection *sect; |
c906108c | 308 | int i; |
5417f6dc | 309 | |
b8fbeb18 | 310 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 311 | if (sect) |
b8fbeb18 EZ |
312 | objfile->sect_index_text = sect->index; |
313 | ||
314 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 315 | if (sect) |
b8fbeb18 EZ |
316 | objfile->sect_index_data = sect->index; |
317 | ||
318 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 319 | if (sect) |
b8fbeb18 EZ |
320 | objfile->sect_index_bss = sect->index; |
321 | ||
322 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 323 | if (sect) |
b8fbeb18 EZ |
324 | objfile->sect_index_rodata = sect->index; |
325 | ||
bbcd32ad FF |
326 | /* This is where things get really weird... We MUST have valid |
327 | indices for the various sect_index_* members or gdb will abort. | |
328 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
329 | accomodate that. First, check for a file with the standard |
330 | one or two segments. */ | |
331 | ||
332 | symfile_find_segment_sections (objfile); | |
333 | ||
334 | /* Except when explicitly adding symbol files at some address, | |
335 | section_offsets contains nothing but zeros, so it doesn't matter | |
336 | which slot in section_offsets the individual sect_index_* members | |
337 | index into. So if they are all zero, it is safe to just point | |
338 | all the currently uninitialized indices to the first slot. But | |
339 | beware: if this is the main executable, it may be relocated | |
340 | later, e.g. by the remote qOffsets packet, and then this will | |
341 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
342 | |
343 | for (i = 0; i < objfile->num_sections; i++) | |
344 | { | |
345 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
346 | { | |
347 | break; | |
348 | } | |
349 | } | |
350 | if (i == objfile->num_sections) | |
351 | { | |
352 | if (objfile->sect_index_text == -1) | |
353 | objfile->sect_index_text = 0; | |
354 | if (objfile->sect_index_data == -1) | |
355 | objfile->sect_index_data = 0; | |
356 | if (objfile->sect_index_bss == -1) | |
357 | objfile->sect_index_bss = 0; | |
358 | if (objfile->sect_index_rodata == -1) | |
359 | objfile->sect_index_rodata = 0; | |
360 | } | |
b8fbeb18 | 361 | } |
c906108c | 362 | |
c1bd25fd DJ |
363 | /* The arguments to place_section. */ |
364 | ||
365 | struct place_section_arg | |
366 | { | |
367 | struct section_offsets *offsets; | |
368 | CORE_ADDR lowest; | |
369 | }; | |
370 | ||
371 | /* Find a unique offset to use for loadable section SECT if | |
372 | the user did not provide an offset. */ | |
373 | ||
2c0b251b | 374 | static void |
c1bd25fd DJ |
375 | place_section (bfd *abfd, asection *sect, void *obj) |
376 | { | |
377 | struct place_section_arg *arg = obj; | |
378 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
379 | int done; | |
3bd72c6f | 380 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 381 | |
2711e456 DJ |
382 | /* We are only interested in allocated sections. */ |
383 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
384 | return; |
385 | ||
386 | /* If the user specified an offset, honor it. */ | |
387 | if (offsets[sect->index] != 0) | |
388 | return; | |
389 | ||
390 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
391 | start_addr = (arg->lowest + align - 1) & -align; |
392 | ||
c1bd25fd DJ |
393 | do { |
394 | asection *cur_sec; | |
c1bd25fd | 395 | |
c1bd25fd DJ |
396 | done = 1; |
397 | ||
398 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
399 | { | |
400 | int indx = cur_sec->index; | |
c1bd25fd DJ |
401 | |
402 | /* We don't need to compare against ourself. */ | |
403 | if (cur_sec == sect) | |
404 | continue; | |
405 | ||
2711e456 DJ |
406 | /* We can only conflict with allocated sections. */ |
407 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
408 | continue; |
409 | ||
410 | /* If the section offset is 0, either the section has not been placed | |
411 | yet, or it was the lowest section placed (in which case LOWEST | |
412 | will be past its end). */ | |
413 | if (offsets[indx] == 0) | |
414 | continue; | |
415 | ||
416 | /* If this section would overlap us, then we must move up. */ | |
417 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
418 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
419 | { | |
420 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
421 | start_addr = (start_addr + align - 1) & -align; | |
422 | done = 0; | |
3bd72c6f | 423 | break; |
c1bd25fd DJ |
424 | } |
425 | ||
426 | /* Otherwise, we appear to be OK. So far. */ | |
427 | } | |
428 | } | |
429 | while (!done); | |
430 | ||
431 | offsets[sect->index] = start_addr; | |
432 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 433 | } |
e8289572 | 434 | |
75242ef4 JK |
435 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
436 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
437 | entries. */ | |
e8289572 JB |
438 | |
439 | void | |
75242ef4 JK |
440 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
441 | int num_sections, | |
442 | struct section_addr_info *addrs) | |
e8289572 JB |
443 | { |
444 | int i; | |
445 | ||
75242ef4 | 446 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 447 | |
c378eb4e | 448 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 449 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 450 | { |
75242ef4 | 451 | struct other_sections *osp; |
e8289572 | 452 | |
75242ef4 | 453 | osp = &addrs->other[i]; |
5488dafb | 454 | if (osp->sectindex == -1) |
e8289572 JB |
455 | continue; |
456 | ||
c378eb4e | 457 | /* Record all sections in offsets. */ |
e8289572 | 458 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 459 | the BFD index. */ |
75242ef4 JK |
460 | section_offsets->offsets[osp->sectindex] = osp->addr; |
461 | } | |
462 | } | |
463 | ||
1276c759 JK |
464 | /* Transform section name S for a name comparison. prelink can split section |
465 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
466 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
467 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
468 | (`.sbss') section has invalid (increased) virtual address. */ | |
469 | ||
470 | static const char * | |
471 | addr_section_name (const char *s) | |
472 | { | |
473 | if (strcmp (s, ".dynbss") == 0) | |
474 | return ".bss"; | |
475 | if (strcmp (s, ".sdynbss") == 0) | |
476 | return ".sbss"; | |
477 | ||
478 | return s; | |
479 | } | |
480 | ||
82ccf5a5 JK |
481 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
482 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
483 | ||
484 | static int | |
485 | addrs_section_compar (const void *ap, const void *bp) | |
486 | { | |
487 | const struct other_sections *a = *((struct other_sections **) ap); | |
488 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 489 | int retval; |
82ccf5a5 | 490 | |
1276c759 | 491 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
492 | if (retval) |
493 | return retval; | |
494 | ||
5488dafb | 495 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
496 | } |
497 | ||
498 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
499 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
500 | ||
501 | static struct other_sections ** | |
502 | addrs_section_sort (struct section_addr_info *addrs) | |
503 | { | |
504 | struct other_sections **array; | |
505 | int i; | |
506 | ||
507 | /* `+ 1' for the NULL terminator. */ | |
508 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
509 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
510 | array[i] = &addrs->other[i]; | |
511 | array[i] = NULL; | |
512 | ||
513 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
514 | ||
515 | return array; | |
516 | } | |
517 | ||
75242ef4 | 518 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
519 | also SECTINDEXes specific to ABFD there. This function can be used to |
520 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
521 | |
522 | void | |
523 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
524 | { | |
525 | asection *lower_sect; | |
75242ef4 JK |
526 | CORE_ADDR lower_offset; |
527 | int i; | |
82ccf5a5 JK |
528 | struct cleanup *my_cleanup; |
529 | struct section_addr_info *abfd_addrs; | |
530 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
531 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
532 | |
533 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
534 | continguous sections. */ |
535 | lower_sect = NULL; | |
536 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
537 | if (lower_sect == NULL) |
538 | { | |
539 | warning (_("no loadable sections found in added symbol-file %s"), | |
540 | bfd_get_filename (abfd)); | |
541 | lower_offset = 0; | |
e8289572 | 542 | } |
75242ef4 JK |
543 | else |
544 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
545 | ||
82ccf5a5 JK |
546 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
547 | in ABFD. Section names are not unique - there can be multiple sections of | |
548 | the same name. Also the sections of the same name do not have to be | |
549 | adjacent to each other. Some sections may be present only in one of the | |
550 | files. Even sections present in both files do not have to be in the same | |
551 | order. | |
552 | ||
553 | Use stable sort by name for the sections in both files. Then linearly | |
554 | scan both lists matching as most of the entries as possible. */ | |
555 | ||
556 | addrs_sorted = addrs_section_sort (addrs); | |
557 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
558 | ||
559 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
560 | make_cleanup_free_section_addr_info (abfd_addrs); | |
561 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
562 | make_cleanup (xfree, abfd_addrs_sorted); | |
563 | ||
c378eb4e MS |
564 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
565 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
566 | |
567 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
568 | * addrs->num_sections); | |
569 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
570 | ||
571 | while (*addrs_sorted) | |
572 | { | |
1276c759 | 573 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
574 | |
575 | while (*abfd_addrs_sorted | |
1276c759 JK |
576 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
577 | sect_name) < 0) | |
82ccf5a5 JK |
578 | abfd_addrs_sorted++; |
579 | ||
580 | if (*abfd_addrs_sorted | |
1276c759 JK |
581 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
582 | sect_name) == 0) | |
82ccf5a5 JK |
583 | { |
584 | int index_in_addrs; | |
585 | ||
586 | /* Make the found item directly addressable from ADDRS. */ | |
587 | index_in_addrs = *addrs_sorted - addrs->other; | |
588 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
589 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
590 | ||
591 | /* Never use the same ABFD entry twice. */ | |
592 | abfd_addrs_sorted++; | |
593 | } | |
594 | ||
595 | addrs_sorted++; | |
596 | } | |
597 | ||
75242ef4 JK |
598 | /* Calculate offsets for the loadable sections. |
599 | FIXME! Sections must be in order of increasing loadable section | |
600 | so that contiguous sections can use the lower-offset!!! | |
601 | ||
602 | Adjust offsets if the segments are not contiguous. | |
603 | If the section is contiguous, its offset should be set to | |
604 | the offset of the highest loadable section lower than it | |
605 | (the loadable section directly below it in memory). | |
606 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
607 | ||
608 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
609 | { | |
82ccf5a5 | 610 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
611 | |
612 | if (sect) | |
75242ef4 | 613 | { |
c378eb4e | 614 | /* This is the index used by BFD. */ |
82ccf5a5 | 615 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
616 | |
617 | if (addrs->other[i].addr != 0) | |
75242ef4 | 618 | { |
82ccf5a5 | 619 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 620 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
621 | } |
622 | else | |
672d9c23 | 623 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
624 | } |
625 | else | |
672d9c23 | 626 | { |
1276c759 JK |
627 | /* addr_section_name transformation is not used for SECT_NAME. */ |
628 | const char *sect_name = addrs->other[i].name; | |
629 | ||
b0fcb67f JK |
630 | /* This section does not exist in ABFD, which is normally |
631 | unexpected and we want to issue a warning. | |
632 | ||
4d9743af JK |
633 | However, the ELF prelinker does create a few sections which are |
634 | marked in the main executable as loadable (they are loaded in | |
635 | memory from the DYNAMIC segment) and yet are not present in | |
636 | separate debug info files. This is fine, and should not cause | |
637 | a warning. Shared libraries contain just the section | |
638 | ".gnu.liblist" but it is not marked as loadable there. There is | |
639 | no other way to identify them than by their name as the sections | |
1276c759 JK |
640 | created by prelink have no special flags. |
641 | ||
642 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
643 | |
644 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 645 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
646 | || (strcmp (sect_name, ".bss") == 0 |
647 | && i > 0 | |
648 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
649 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
650 | || (strcmp (sect_name, ".sbss") == 0 | |
651 | && i > 0 | |
652 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
653 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
654 | warning (_("section %s not found in %s"), sect_name, |
655 | bfd_get_filename (abfd)); | |
656 | ||
672d9c23 | 657 | addrs->other[i].addr = 0; |
5488dafb | 658 | addrs->other[i].sectindex = -1; |
672d9c23 | 659 | } |
75242ef4 | 660 | } |
82ccf5a5 JK |
661 | |
662 | do_cleanups (my_cleanup); | |
75242ef4 JK |
663 | } |
664 | ||
665 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
666 | of how to represent it for fast symbol reading. This is the default | |
667 | version of the sym_fns.sym_offsets function for symbol readers that | |
668 | don't need to do anything special. It allocates a section_offsets table | |
669 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
670 | ||
671 | void | |
672 | default_symfile_offsets (struct objfile *objfile, | |
673 | struct section_addr_info *addrs) | |
674 | { | |
675 | objfile->num_sections = bfd_count_sections (objfile->obfd); | |
676 | objfile->section_offsets = (struct section_offsets *) | |
677 | obstack_alloc (&objfile->objfile_obstack, | |
678 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
679 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
680 | objfile->num_sections, addrs); | |
e8289572 | 681 | |
c1bd25fd DJ |
682 | /* For relocatable files, all loadable sections will start at zero. |
683 | The zero is meaningless, so try to pick arbitrary addresses such | |
684 | that no loadable sections overlap. This algorithm is quadratic, | |
685 | but the number of sections in a single object file is generally | |
686 | small. */ | |
687 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
688 | { | |
689 | struct place_section_arg arg; | |
2711e456 DJ |
690 | bfd *abfd = objfile->obfd; |
691 | asection *cur_sec; | |
2711e456 DJ |
692 | |
693 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
694 | /* We do not expect this to happen; just skip this step if the | |
695 | relocatable file has a section with an assigned VMA. */ | |
696 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
697 | break; | |
698 | ||
699 | if (cur_sec == NULL) | |
700 | { | |
701 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
702 | ||
703 | /* Pick non-overlapping offsets for sections the user did not | |
704 | place explicitly. */ | |
705 | arg.offsets = objfile->section_offsets; | |
706 | arg.lowest = 0; | |
707 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
708 | ||
709 | /* Correctly filling in the section offsets is not quite | |
710 | enough. Relocatable files have two properties that | |
711 | (most) shared objects do not: | |
712 | ||
713 | - Their debug information will contain relocations. Some | |
714 | shared libraries do also, but many do not, so this can not | |
715 | be assumed. | |
716 | ||
717 | - If there are multiple code sections they will be loaded | |
718 | at different relative addresses in memory than they are | |
719 | in the objfile, since all sections in the file will start | |
720 | at address zero. | |
721 | ||
722 | Because GDB has very limited ability to map from an | |
723 | address in debug info to the correct code section, | |
724 | it relies on adding SECT_OFF_TEXT to things which might be | |
725 | code. If we clear all the section offsets, and set the | |
726 | section VMAs instead, then symfile_relocate_debug_section | |
727 | will return meaningful debug information pointing at the | |
728 | correct sections. | |
729 | ||
730 | GDB has too many different data structures for section | |
731 | addresses - a bfd, objfile, and so_list all have section | |
732 | tables, as does exec_ops. Some of these could probably | |
733 | be eliminated. */ | |
734 | ||
735 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
736 | cur_sec = cur_sec->next) | |
737 | { | |
738 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
739 | continue; | |
740 | ||
741 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
742 | exec_set_section_address (bfd_get_filename (abfd), |
743 | cur_sec->index, | |
30510692 | 744 | offsets[cur_sec->index]); |
2711e456 DJ |
745 | offsets[cur_sec->index] = 0; |
746 | } | |
747 | } | |
c1bd25fd DJ |
748 | } |
749 | ||
e8289572 | 750 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 751 | .rodata sections. */ |
e8289572 JB |
752 | init_objfile_sect_indices (objfile); |
753 | } | |
754 | ||
755 | ||
31d99776 DJ |
756 | /* Divide the file into segments, which are individual relocatable units. |
757 | This is the default version of the sym_fns.sym_segments function for | |
758 | symbol readers that do not have an explicit representation of segments. | |
759 | It assumes that object files do not have segments, and fully linked | |
760 | files have a single segment. */ | |
761 | ||
762 | struct symfile_segment_data * | |
763 | default_symfile_segments (bfd *abfd) | |
764 | { | |
765 | int num_sections, i; | |
766 | asection *sect; | |
767 | struct symfile_segment_data *data; | |
768 | CORE_ADDR low, high; | |
769 | ||
770 | /* Relocatable files contain enough information to position each | |
771 | loadable section independently; they should not be relocated | |
772 | in segments. */ | |
773 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
774 | return NULL; | |
775 | ||
776 | /* Make sure there is at least one loadable section in the file. */ | |
777 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
778 | { | |
779 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
780 | continue; | |
781 | ||
782 | break; | |
783 | } | |
784 | if (sect == NULL) | |
785 | return NULL; | |
786 | ||
787 | low = bfd_get_section_vma (abfd, sect); | |
788 | high = low + bfd_get_section_size (sect); | |
789 | ||
790 | data = XZALLOC (struct symfile_segment_data); | |
791 | data->num_segments = 1; | |
792 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
793 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
794 | ||
795 | num_sections = bfd_count_sections (abfd); | |
796 | data->segment_info = XCALLOC (num_sections, int); | |
797 | ||
798 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
799 | { | |
800 | CORE_ADDR vma; | |
801 | ||
802 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
803 | continue; | |
804 | ||
805 | vma = bfd_get_section_vma (abfd, sect); | |
806 | if (vma < low) | |
807 | low = vma; | |
808 | if (vma + bfd_get_section_size (sect) > high) | |
809 | high = vma + bfd_get_section_size (sect); | |
810 | ||
811 | data->segment_info[i] = 1; | |
812 | } | |
813 | ||
814 | data->segment_bases[0] = low; | |
815 | data->segment_sizes[0] = high - low; | |
816 | ||
817 | return data; | |
818 | } | |
819 | ||
608e2dbb TT |
820 | /* This is a convenience function to call sym_read for OBJFILE and |
821 | possibly force the partial symbols to be read. */ | |
822 | ||
823 | static void | |
824 | read_symbols (struct objfile *objfile, int add_flags) | |
825 | { | |
826 | (*objfile->sf->sym_read) (objfile, add_flags); | |
8a92335b JK |
827 | |
828 | /* find_separate_debug_file_in_section should be called only if there is | |
829 | single binary with no existing separate debug info file. */ | |
830 | if (!objfile_has_partial_symbols (objfile) | |
831 | && objfile->separate_debug_objfile == NULL | |
832 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb TT |
833 | { |
834 | bfd *abfd = find_separate_debug_file_in_section (objfile); | |
835 | struct cleanup *cleanup = make_cleanup_bfd_unref (abfd); | |
836 | ||
837 | if (abfd != NULL) | |
838 | symbol_file_add_separate (abfd, add_flags, objfile); | |
839 | ||
840 | do_cleanups (cleanup); | |
841 | } | |
842 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
843 | require_partial_symbols (objfile, 0); | |
844 | } | |
845 | ||
3d6e24f0 JB |
846 | /* Initialize entry point information for this objfile. */ |
847 | ||
848 | static void | |
849 | init_entry_point_info (struct objfile *objfile) | |
850 | { | |
851 | /* Save startup file's range of PC addresses to help blockframe.c | |
852 | decide where the bottom of the stack is. */ | |
853 | ||
854 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
855 | { | |
856 | /* Executable file -- record its entry point so we'll recognize | |
857 | the startup file because it contains the entry point. */ | |
858 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
859 | objfile->ei.entry_point_p = 1; | |
860 | } | |
861 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
862 | && bfd_get_start_address (objfile->obfd) != 0) | |
863 | { | |
864 | /* Some shared libraries may have entry points set and be | |
865 | runnable. There's no clear way to indicate this, so just check | |
866 | for values other than zero. */ | |
867 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
868 | objfile->ei.entry_point_p = 1; | |
869 | } | |
870 | else | |
871 | { | |
872 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
873 | objfile->ei.entry_point_p = 0; | |
874 | } | |
875 | ||
876 | if (objfile->ei.entry_point_p) | |
877 | { | |
878 | CORE_ADDR entry_point = objfile->ei.entry_point; | |
879 | ||
880 | /* Make certain that the address points at real code, and not a | |
881 | function descriptor. */ | |
882 | entry_point | |
883 | = gdbarch_convert_from_func_ptr_addr (objfile->gdbarch, | |
884 | entry_point, | |
885 | ¤t_target); | |
886 | ||
887 | /* Remove any ISA markers, so that this matches entries in the | |
888 | symbol table. */ | |
889 | objfile->ei.entry_point | |
890 | = gdbarch_addr_bits_remove (objfile->gdbarch, entry_point); | |
891 | } | |
892 | } | |
893 | ||
c906108c SS |
894 | /* Process a symbol file, as either the main file or as a dynamically |
895 | loaded file. | |
896 | ||
36e4d068 JB |
897 | This function does not set the OBJFILE's entry-point info. |
898 | ||
96baa820 JM |
899 | OBJFILE is where the symbols are to be read from. |
900 | ||
7e8580c1 JB |
901 | ADDRS is the list of section load addresses. If the user has given |
902 | an 'add-symbol-file' command, then this is the list of offsets and | |
903 | addresses he or she provided as arguments to the command; or, if | |
904 | we're handling a shared library, these are the actual addresses the | |
905 | sections are loaded at, according to the inferior's dynamic linker | |
906 | (as gleaned by GDB's shared library code). We convert each address | |
907 | into an offset from the section VMA's as it appears in the object | |
908 | file, and then call the file's sym_offsets function to convert this | |
909 | into a format-specific offset table --- a `struct section_offsets'. | |
910 | If ADDRS is non-zero, OFFSETS must be zero. | |
911 | ||
912 | OFFSETS is a table of section offsets already in the right | |
913 | format-specific representation. NUM_OFFSETS is the number of | |
914 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
915 | assume this is the proper table the call to sym_offsets described | |
916 | above would produce. Instead of calling sym_offsets, we just dump | |
917 | it right into objfile->section_offsets. (When we're re-reading | |
918 | symbols from an objfile, we don't have the original load address | |
919 | list any more; all we have is the section offset table.) If | |
920 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 921 | |
7eedccfa PP |
922 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
923 | an extra symbol file such as dynamically loaded code, and wether | |
924 | breakpoint reset should be deferred. */ | |
c906108c | 925 | |
36e4d068 JB |
926 | static void |
927 | syms_from_objfile_1 (struct objfile *objfile, | |
928 | struct section_addr_info *addrs, | |
929 | struct section_offsets *offsets, | |
930 | int num_offsets, | |
931 | int add_flags) | |
c906108c | 932 | { |
a39a16c4 | 933 | struct section_addr_info *local_addr = NULL; |
c906108c | 934 | struct cleanup *old_chain; |
7eedccfa | 935 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 936 | |
7e8580c1 | 937 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 938 | |
31d99776 | 939 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 940 | |
75245b24 | 941 | if (objfile->sf == NULL) |
36e4d068 JB |
942 | { |
943 | /* No symbols to load, but we still need to make sure | |
944 | that the section_offsets table is allocated. */ | |
945 | int num_sections = bfd_count_sections (objfile->obfd); | |
946 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
947 | ||
948 | objfile->num_sections = num_sections; | |
949 | objfile->section_offsets | |
950 | = obstack_alloc (&objfile->objfile_obstack, size); | |
951 | memset (objfile->section_offsets, 0, size); | |
952 | return; | |
953 | } | |
75245b24 | 954 | |
c906108c SS |
955 | /* Make sure that partially constructed symbol tables will be cleaned up |
956 | if an error occurs during symbol reading. */ | |
74b7792f | 957 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 958 | |
a39a16c4 MM |
959 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
960 | list. We now establish the convention that an addr of zero means | |
c378eb4e | 961 | no load address was specified. */ |
a39a16c4 MM |
962 | if (! addrs && ! offsets) |
963 | { | |
5417f6dc | 964 | local_addr |
a39a16c4 MM |
965 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
966 | make_cleanup (xfree, local_addr); | |
967 | addrs = local_addr; | |
968 | } | |
969 | ||
970 | /* Now either addrs or offsets is non-zero. */ | |
971 | ||
c5aa993b | 972 | if (mainline) |
c906108c SS |
973 | { |
974 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 975 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 976 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
977 | |
978 | /* Since no error yet, throw away the old symbol table. */ | |
979 | ||
980 | if (symfile_objfile != NULL) | |
981 | { | |
982 | free_objfile (symfile_objfile); | |
adb7f338 | 983 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
984 | } |
985 | ||
986 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
987 | If the user wants to get rid of them, they should do "symbol-file" |
988 | without arguments first. Not sure this is the best behavior | |
989 | (PR 2207). */ | |
c906108c | 990 | |
c5aa993b | 991 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
992 | } |
993 | ||
994 | /* Convert addr into an offset rather than an absolute address. | |
995 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 996 | and assume that <addr> is where that got loaded. |
c906108c | 997 | |
53a5351d JM |
998 | We no longer warn if the lowest section is not a text segment (as |
999 | happens for the PA64 port. */ | |
0d15807d | 1000 | if (addrs && addrs->other[0].name) |
75242ef4 | 1001 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
1002 | |
1003 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
1004 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 1005 | initial symbol reading for this file. */ |
c906108c | 1006 | |
c5aa993b | 1007 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 1008 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1009 | |
7e8580c1 JB |
1010 | if (addrs) |
1011 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
1012 | else | |
1013 | { | |
1014 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
1015 | ||
1016 | /* Just copy in the offset table directly as given to us. */ | |
1017 | objfile->num_sections = num_offsets; | |
1018 | objfile->section_offsets | |
1019 | = ((struct section_offsets *) | |
8b92e4d5 | 1020 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
1021 | memcpy (objfile->section_offsets, offsets, size); |
1022 | ||
1023 | init_objfile_sect_indices (objfile); | |
1024 | } | |
c906108c | 1025 | |
608e2dbb | 1026 | read_symbols (objfile, add_flags); |
b11896a5 | 1027 | |
c906108c SS |
1028 | /* Discard cleanups as symbol reading was successful. */ |
1029 | ||
1030 | discard_cleanups (old_chain); | |
f7545552 | 1031 | xfree (local_addr); |
c906108c SS |
1032 | } |
1033 | ||
36e4d068 JB |
1034 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1035 | entry-point info. */ | |
1036 | ||
1037 | void | |
1038 | syms_from_objfile (struct objfile *objfile, | |
1039 | struct section_addr_info *addrs, | |
1040 | struct section_offsets *offsets, | |
1041 | int num_offsets, | |
1042 | int add_flags) | |
1043 | { | |
1044 | syms_from_objfile_1 (objfile, addrs, offsets, num_offsets, add_flags); | |
1045 | init_entry_point_info (objfile); | |
1046 | } | |
1047 | ||
c906108c SS |
1048 | /* Perform required actions after either reading in the initial |
1049 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1050 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1051 | |
c906108c | 1052 | void |
7eedccfa | 1053 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1054 | { |
c906108c | 1055 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1056 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1057 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1058 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1059 | { |
1060 | /* OK, make it the "real" symbol file. */ | |
1061 | symfile_objfile = objfile; | |
1062 | ||
c1e56572 | 1063 | clear_symtab_users (add_flags); |
c906108c | 1064 | } |
7eedccfa | 1065 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1066 | { |
69de3c6a | 1067 | breakpoint_re_set (); |
c906108c SS |
1068 | } |
1069 | ||
1070 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1071 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1072 | } |
1073 | ||
1074 | /* Process a symbol file, as either the main file or as a dynamically | |
1075 | loaded file. | |
1076 | ||
5417f6dc | 1077 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1078 | A new reference is acquired by this function. |
7904e09f | 1079 | |
7eedccfa PP |
1080 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1081 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1082 | |
1083 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1084 | syms_from_objfile, above. |
1085 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1086 | |
63524580 JK |
1087 | PARENT is the original objfile if ABFD is a separate debug info file. |
1088 | Otherwise PARENT is NULL. | |
1089 | ||
c906108c | 1090 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1091 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1092 | |
7904e09f | 1093 | static struct objfile * |
7eedccfa PP |
1094 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1095 | int add_flags, | |
7904e09f JB |
1096 | struct section_addr_info *addrs, |
1097 | struct section_offsets *offsets, | |
1098 | int num_offsets, | |
63524580 | 1099 | int flags, struct objfile *parent) |
c906108c SS |
1100 | { |
1101 | struct objfile *objfile; | |
5417f6dc | 1102 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1103 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1104 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1105 | const int should_print = ((from_tty || info_verbose) |
1106 | && (readnow_symbol_files | |
1107 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1108 | |
9291a0cd | 1109 | if (readnow_symbol_files) |
b11896a5 TT |
1110 | { |
1111 | flags |= OBJF_READNOW; | |
1112 | add_flags &= ~SYMFILE_NO_READ; | |
1113 | } | |
9291a0cd | 1114 | |
5417f6dc RM |
1115 | /* Give user a chance to burp if we'd be |
1116 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1117 | |
1118 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1119 | && mainline |
c906108c | 1120 | && from_tty |
9e2f0ad4 | 1121 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1122 | error (_("Not confirmed.")); |
c906108c | 1123 | |
0838fb57 | 1124 | objfile = allocate_objfile (abfd, flags | (mainline ? OBJF_MAINLINE : 0)); |
c906108c | 1125 | |
63524580 JK |
1126 | if (parent) |
1127 | add_separate_debug_objfile (objfile, parent); | |
1128 | ||
78a4a9b9 AC |
1129 | /* We either created a new mapped symbol table, mapped an existing |
1130 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1131 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1132 | if (should_print) |
c906108c | 1133 | { |
769d7dc4 AC |
1134 | if (deprecated_pre_add_symbol_hook) |
1135 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1136 | else |
c906108c | 1137 | { |
55333a84 DE |
1138 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1139 | wrap_here (""); | |
1140 | gdb_flush (gdb_stdout); | |
c906108c | 1141 | } |
c906108c | 1142 | } |
78a4a9b9 | 1143 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1144 | add_flags); |
c906108c SS |
1145 | |
1146 | /* We now have at least a partial symbol table. Check to see if the | |
1147 | user requested that all symbols be read on initial access via either | |
1148 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1149 | all partial symbol tables for this objfile if so. */ |
c906108c | 1150 | |
9291a0cd | 1151 | if ((flags & OBJF_READNOW)) |
c906108c | 1152 | { |
b11896a5 | 1153 | if (should_print) |
c906108c | 1154 | { |
a3f17187 | 1155 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1156 | wrap_here (""); |
1157 | gdb_flush (gdb_stdout); | |
1158 | } | |
1159 | ||
ccefe4c4 TT |
1160 | if (objfile->sf) |
1161 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1162 | } |
1163 | ||
b11896a5 | 1164 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1165 | { |
1166 | wrap_here (""); | |
55333a84 | 1167 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1168 | wrap_here (""); |
1169 | } | |
1170 | ||
b11896a5 | 1171 | if (should_print) |
c906108c | 1172 | { |
769d7dc4 AC |
1173 | if (deprecated_post_add_symbol_hook) |
1174 | deprecated_post_add_symbol_hook (); | |
c906108c | 1175 | else |
55333a84 | 1176 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1177 | } |
1178 | ||
481d0f41 JB |
1179 | /* We print some messages regardless of whether 'from_tty || |
1180 | info_verbose' is true, so make sure they go out at the right | |
1181 | time. */ | |
1182 | gdb_flush (gdb_stdout); | |
1183 | ||
109f874e | 1184 | if (objfile->sf == NULL) |
8caee43b PP |
1185 | { |
1186 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1187 | return objfile; /* No symbols. */ |
8caee43b | 1188 | } |
109f874e | 1189 | |
7eedccfa | 1190 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1191 | |
06d3b283 | 1192 | observer_notify_new_objfile (objfile); |
c906108c | 1193 | |
ce7d4522 | 1194 | bfd_cache_close_all (); |
c906108c SS |
1195 | return (objfile); |
1196 | } | |
1197 | ||
9cce227f TG |
1198 | /* Add BFD as a separate debug file for OBJFILE. */ |
1199 | ||
1200 | void | |
1201 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1202 | { | |
15d123c9 | 1203 | struct objfile *new_objfile; |
089b4803 TG |
1204 | struct section_addr_info *sap; |
1205 | struct cleanup *my_cleanup; | |
1206 | ||
1207 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1208 | because sections of BFD may not match sections of OBJFILE and because | |
1209 | vma may have been modified by tools such as prelink. */ | |
1210 | sap = build_section_addr_info_from_objfile (objfile); | |
1211 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1212 | |
15d123c9 | 1213 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1214 | (bfd, symfile_flags, |
089b4803 | 1215 | sap, NULL, 0, |
9cce227f | 1216 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1217 | | OBJF_USERLOADED), |
1218 | objfile); | |
089b4803 TG |
1219 | |
1220 | do_cleanups (my_cleanup); | |
9cce227f | 1221 | } |
7904e09f | 1222 | |
eb4556d7 JB |
1223 | /* Process the symbol file ABFD, as either the main file or as a |
1224 | dynamically loaded file. | |
1225 | ||
1226 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1227 | details. */ | |
1228 | struct objfile * | |
7eedccfa | 1229 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1230 | struct section_addr_info *addrs, |
63524580 | 1231 | int flags, struct objfile *parent) |
eb4556d7 | 1232 | { |
7eedccfa | 1233 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
63524580 | 1234 | flags, parent); |
eb4556d7 JB |
1235 | } |
1236 | ||
1237 | ||
7904e09f JB |
1238 | /* Process a symbol file, as either the main file or as a dynamically |
1239 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1240 | for details. */ | |
1241 | struct objfile * | |
7eedccfa PP |
1242 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1243 | int flags) | |
7904e09f | 1244 | { |
8ac244b4 TT |
1245 | bfd *bfd = symfile_bfd_open (name); |
1246 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1247 | struct objfile *objf; | |
1248 | ||
882f447f | 1249 | objf = symbol_file_add_from_bfd (bfd, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1250 | do_cleanups (cleanup); |
1251 | return objf; | |
7904e09f JB |
1252 | } |
1253 | ||
1254 | ||
d7db6da9 FN |
1255 | /* Call symbol_file_add() with default values and update whatever is |
1256 | affected by the loading of a new main(). | |
1257 | Used when the file is supplied in the gdb command line | |
1258 | and by some targets with special loading requirements. | |
1259 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1260 | argument for the switches that can only be specified in the symbol_file | |
1261 | command itself. */ | |
5417f6dc | 1262 | |
1adeb98a FN |
1263 | void |
1264 | symbol_file_add_main (char *args, int from_tty) | |
1265 | { | |
d7db6da9 FN |
1266 | symbol_file_add_main_1 (args, from_tty, 0); |
1267 | } | |
1268 | ||
1269 | static void | |
1270 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1271 | { | |
7dcd53a0 TT |
1272 | const int add_flags = (current_inferior ()->symfile_flags |
1273 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1274 | ||
7eedccfa | 1275 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1276 | |
d7db6da9 FN |
1277 | /* Getting new symbols may change our opinion about |
1278 | what is frameless. */ | |
1279 | reinit_frame_cache (); | |
1280 | ||
7dcd53a0 TT |
1281 | if ((flags & SYMFILE_NO_READ) == 0) |
1282 | set_initial_language (); | |
1adeb98a FN |
1283 | } |
1284 | ||
1285 | void | |
1286 | symbol_file_clear (int from_tty) | |
1287 | { | |
1288 | if ((have_full_symbols () || have_partial_symbols ()) | |
1289 | && from_tty | |
0430b0d6 AS |
1290 | && (symfile_objfile |
1291 | ? !query (_("Discard symbol table from `%s'? "), | |
1292 | symfile_objfile->name) | |
1293 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1294 | error (_("Not confirmed.")); |
1adeb98a | 1295 | |
0133421a JK |
1296 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1297 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1298 | no_shared_libraries (NULL, from_tty); |
1299 | ||
0133421a JK |
1300 | free_all_objfiles (); |
1301 | ||
adb7f338 | 1302 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1303 | if (from_tty) |
1304 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1305 | } |
1306 | ||
904578ed JK |
1307 | /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and |
1308 | return 1. Otherwise print a warning and return 0. ABFD seek position is | |
1309 | not preserved. */ | |
1310 | ||
1311 | static int | |
1312 | get_file_crc (bfd *abfd, unsigned long *file_crc_return) | |
1313 | { | |
1314 | unsigned long file_crc = 0; | |
1315 | ||
1316 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
1317 | { | |
1318 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1319 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | for (;;) | |
1324 | { | |
1325 | gdb_byte buffer[8 * 1024]; | |
1326 | bfd_size_type count; | |
1327 | ||
1328 | count = bfd_bread (buffer, sizeof (buffer), abfd); | |
1329 | if (count == (bfd_size_type) -1) | |
1330 | { | |
1331 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1332 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1333 | return 0; | |
1334 | } | |
1335 | if (count == 0) | |
1336 | break; | |
3bff1ecd | 1337 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
904578ed JK |
1338 | } |
1339 | ||
1340 | *file_crc_return = file_crc; | |
1341 | return 1; | |
1342 | } | |
1343 | ||
5b5d99cf | 1344 | static int |
287ccc17 | 1345 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1346 | struct objfile *parent_objfile) |
5b5d99cf | 1347 | { |
904578ed JK |
1348 | unsigned long file_crc; |
1349 | int file_crc_p; | |
f1838a98 | 1350 | bfd *abfd; |
32a0e547 | 1351 | struct stat parent_stat, abfd_stat; |
904578ed | 1352 | int verified_as_different; |
32a0e547 JK |
1353 | |
1354 | /* Find a separate debug info file as if symbols would be present in | |
1355 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1356 | section can contain just the basename of PARENT_OBJFILE without any | |
1357 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1358 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1359 | |
0ba1096a | 1360 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1361 | return 0; |
5b5d99cf | 1362 | |
08d2cd74 | 1363 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1364 | |
1365 | if (!abfd) | |
5b5d99cf JB |
1366 | return 0; |
1367 | ||
0ba1096a | 1368 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1369 | |
1370 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1371 | st_ino; they always set it to zero. (Windows does provide a | |
1372 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1373 | case. While there is no guarantee that a system that provides | |
1374 | meaningful inode numbers will never set st_ino to zero, this is | |
1375 | merely an optimization, so we do not need to worry about false | |
1376 | negatives. */ | |
1377 | ||
1378 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1379 | && abfd_stat.st_ino != 0 |
1380 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1381 | { |
904578ed JK |
1382 | if (abfd_stat.st_dev == parent_stat.st_dev |
1383 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1384 | { | |
cbb099e8 | 1385 | gdb_bfd_unref (abfd); |
904578ed JK |
1386 | return 0; |
1387 | } | |
1388 | verified_as_different = 1; | |
32a0e547 | 1389 | } |
904578ed JK |
1390 | else |
1391 | verified_as_different = 0; | |
32a0e547 | 1392 | |
904578ed | 1393 | file_crc_p = get_file_crc (abfd, &file_crc); |
5b5d99cf | 1394 | |
cbb099e8 | 1395 | gdb_bfd_unref (abfd); |
5b5d99cf | 1396 | |
904578ed JK |
1397 | if (!file_crc_p) |
1398 | return 0; | |
1399 | ||
287ccc17 JK |
1400 | if (crc != file_crc) |
1401 | { | |
904578ed JK |
1402 | /* If one (or both) the files are accessed for example the via "remote:" |
1403 | gdbserver way it does not support the bfd_stat operation. Verify | |
1404 | whether those two files are not the same manually. */ | |
1405 | ||
1406 | if (!verified_as_different && !parent_objfile->crc32_p) | |
1407 | { | |
1408 | parent_objfile->crc32_p = get_file_crc (parent_objfile->obfd, | |
1409 | &parent_objfile->crc32); | |
1410 | if (!parent_objfile->crc32_p) | |
1411 | return 0; | |
1412 | } | |
1413 | ||
0e8aefe7 | 1414 | if (verified_as_different || parent_objfile->crc32 != file_crc) |
904578ed JK |
1415 | warning (_("the debug information found in \"%s\"" |
1416 | " does not match \"%s\" (CRC mismatch).\n"), | |
1417 | name, parent_objfile->name); | |
1418 | ||
287ccc17 JK |
1419 | return 0; |
1420 | } | |
1421 | ||
1422 | return 1; | |
5b5d99cf JB |
1423 | } |
1424 | ||
aa28a74e | 1425 | char *debug_file_directory = NULL; |
920d2a44 AC |
1426 | static void |
1427 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1428 | struct cmd_list_element *c, const char *value) | |
1429 | { | |
3e43a32a MS |
1430 | fprintf_filtered (file, |
1431 | _("The directory where separate debug " | |
1432 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1433 | value); |
1434 | } | |
5b5d99cf JB |
1435 | |
1436 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1437 | #define DEBUG_SUBDIRECTORY ".debug" | |
1438 | #endif | |
1439 | ||
1db33378 PP |
1440 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1441 | where the original file resides (may not be the same as | |
1442 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
1443 | looking for. Returns the name of the debuginfo, of NULL. */ | |
1444 | ||
1445 | static char * | |
1446 | find_separate_debug_file (const char *dir, | |
1447 | const char *canon_dir, | |
1448 | const char *debuglink, | |
1449 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1450 | { |
1db33378 PP |
1451 | char *debugdir; |
1452 | char *debugfile; | |
9cce227f | 1453 | int i; |
e4ab2fad JK |
1454 | VEC (char_ptr) *debugdir_vec; |
1455 | struct cleanup *back_to; | |
1456 | int ix; | |
5b5d99cf | 1457 | |
1db33378 | 1458 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1459 | i = strlen (dir); |
1db33378 PP |
1460 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1461 | i = strlen (canon_dir); | |
1ffa32ee | 1462 | |
25522fae JK |
1463 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1464 | + i | |
1465 | + strlen (DEBUG_SUBDIRECTORY) | |
1466 | + strlen ("/") | |
1db33378 | 1467 | + strlen (debuglink) |
25522fae | 1468 | + 1); |
5b5d99cf JB |
1469 | |
1470 | /* First try in the same directory as the original file. */ | |
1471 | strcpy (debugfile, dir); | |
1db33378 | 1472 | strcat (debugfile, debuglink); |
5b5d99cf | 1473 | |
32a0e547 | 1474 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1475 | return debugfile; |
5417f6dc | 1476 | |
5b5d99cf JB |
1477 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1478 | strcpy (debugfile, dir); | |
1479 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1480 | strcat (debugfile, "/"); | |
1db33378 | 1481 | strcat (debugfile, debuglink); |
5b5d99cf | 1482 | |
32a0e547 | 1483 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1484 | return debugfile; |
5417f6dc | 1485 | |
24ddea62 | 1486 | /* Then try in the global debugfile directories. |
f888f159 | 1487 | |
24ddea62 JK |
1488 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1489 | cause "/..." lookups. */ | |
5417f6dc | 1490 | |
e4ab2fad JK |
1491 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1492 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1493 | |
e4ab2fad JK |
1494 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1495 | { | |
1496 | strcpy (debugfile, debugdir); | |
aa28a74e | 1497 | strcat (debugfile, "/"); |
24ddea62 | 1498 | strcat (debugfile, dir); |
1db33378 | 1499 | strcat (debugfile, debuglink); |
aa28a74e | 1500 | |
32a0e547 | 1501 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1502 | return debugfile; |
24ddea62 JK |
1503 | |
1504 | /* If the file is in the sysroot, try using its base path in the | |
1505 | global debugfile directory. */ | |
1db33378 PP |
1506 | if (canon_dir != NULL |
1507 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1508 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1509 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1510 | { |
e4ab2fad | 1511 | strcpy (debugfile, debugdir); |
1db33378 | 1512 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1513 | strcat (debugfile, "/"); |
1db33378 | 1514 | strcat (debugfile, debuglink); |
24ddea62 | 1515 | |
32a0e547 | 1516 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1517 | return debugfile; |
24ddea62 | 1518 | } |
aa28a74e | 1519 | } |
f888f159 | 1520 | |
e4ab2fad | 1521 | do_cleanups (back_to); |
25522fae | 1522 | xfree (debugfile); |
1db33378 PP |
1523 | return NULL; |
1524 | } | |
1525 | ||
1526 | /* Modify PATH to contain only "directory/" part of PATH. | |
1527 | If there were no directory separators in PATH, PATH will be empty | |
1528 | string on return. */ | |
1529 | ||
1530 | static void | |
1531 | terminate_after_last_dir_separator (char *path) | |
1532 | { | |
1533 | int i; | |
1534 | ||
1535 | /* Strip off the final filename part, leaving the directory name, | |
1536 | followed by a slash. The directory can be relative or absolute. */ | |
1537 | for (i = strlen(path) - 1; i >= 0; i--) | |
1538 | if (IS_DIR_SEPARATOR (path[i])) | |
1539 | break; | |
1540 | ||
1541 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1542 | path[i + 1] = '\0'; | |
1543 | } | |
1544 | ||
1545 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1546 | Returns pathname, or NULL. */ | |
1547 | ||
1548 | char * | |
1549 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1550 | { | |
1551 | char *debuglink; | |
1552 | char *dir, *canon_dir; | |
1553 | char *debugfile; | |
1554 | unsigned long crc32; | |
1555 | struct cleanup *cleanups; | |
1556 | ||
cc0ea93c | 1557 | debuglink = bfd_get_debug_link_info (objfile->obfd, &crc32); |
1db33378 PP |
1558 | |
1559 | if (debuglink == NULL) | |
1560 | { | |
1561 | /* There's no separate debug info, hence there's no way we could | |
1562 | load it => no warning. */ | |
1563 | return NULL; | |
1564 | } | |
1565 | ||
71bdabee | 1566 | cleanups = make_cleanup (xfree, debuglink); |
1db33378 | 1567 | dir = xstrdup (objfile->name); |
71bdabee | 1568 | make_cleanup (xfree, dir); |
1db33378 PP |
1569 | terminate_after_last_dir_separator (dir); |
1570 | canon_dir = lrealpath (dir); | |
1571 | ||
1572 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1573 | crc32, objfile); | |
1574 | xfree (canon_dir); | |
1575 | ||
1576 | if (debugfile == NULL) | |
1577 | { | |
1578 | #ifdef HAVE_LSTAT | |
1579 | /* For PR gdb/9538, try again with realpath (if different from the | |
1580 | original). */ | |
1581 | ||
1582 | struct stat st_buf; | |
1583 | ||
1584 | if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode)) | |
1585 | { | |
1586 | char *symlink_dir; | |
1587 | ||
1588 | symlink_dir = lrealpath (objfile->name); | |
1589 | if (symlink_dir != NULL) | |
1590 | { | |
1591 | make_cleanup (xfree, symlink_dir); | |
1592 | terminate_after_last_dir_separator (symlink_dir); | |
1593 | if (strcmp (dir, symlink_dir) != 0) | |
1594 | { | |
1595 | /* Different directory, so try using it. */ | |
1596 | debugfile = find_separate_debug_file (symlink_dir, | |
1597 | symlink_dir, | |
1598 | debuglink, | |
1599 | crc32, | |
1600 | objfile); | |
1601 | } | |
1602 | } | |
1603 | } | |
1604 | #endif /* HAVE_LSTAT */ | |
1605 | } | |
aa28a74e | 1606 | |
1db33378 | 1607 | do_cleanups (cleanups); |
25522fae | 1608 | return debugfile; |
5b5d99cf JB |
1609 | } |
1610 | ||
1611 | ||
c906108c SS |
1612 | /* This is the symbol-file command. Read the file, analyze its |
1613 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1614 | the command is rather bizarre: |
1615 | ||
1616 | 1. The function buildargv implements various quoting conventions | |
1617 | which are undocumented and have little or nothing in common with | |
1618 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1619 | ||
1620 | 2. Options are used, which are not generally used in GDB (perhaps | |
1621 | "set mapped on", "set readnow on" would be better) | |
1622 | ||
1623 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1624 | conventions (because it is confusing and inconvenient). */ |
1625 | ||
1626 | void | |
fba45db2 | 1627 | symbol_file_command (char *args, int from_tty) |
c906108c | 1628 | { |
c906108c SS |
1629 | dont_repeat (); |
1630 | ||
1631 | if (args == NULL) | |
1632 | { | |
1adeb98a | 1633 | symbol_file_clear (from_tty); |
c906108c SS |
1634 | } |
1635 | else | |
1636 | { | |
d1a41061 | 1637 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1638 | int flags = OBJF_USERLOADED; |
1639 | struct cleanup *cleanups; | |
1640 | char *name = NULL; | |
1641 | ||
7a292a7a | 1642 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1643 | while (*argv != NULL) |
1644 | { | |
78a4a9b9 AC |
1645 | if (strcmp (*argv, "-readnow") == 0) |
1646 | flags |= OBJF_READNOW; | |
1647 | else if (**argv == '-') | |
8a3fe4f8 | 1648 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1649 | else |
1650 | { | |
cb2f3a29 | 1651 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1652 | name = *argv; |
78a4a9b9 | 1653 | } |
cb2f3a29 | 1654 | |
c906108c SS |
1655 | argv++; |
1656 | } | |
1657 | ||
1658 | if (name == NULL) | |
cb2f3a29 MK |
1659 | error (_("no symbol file name was specified")); |
1660 | ||
c906108c SS |
1661 | do_cleanups (cleanups); |
1662 | } | |
1663 | } | |
1664 | ||
1665 | /* Set the initial language. | |
1666 | ||
cb2f3a29 MK |
1667 | FIXME: A better solution would be to record the language in the |
1668 | psymtab when reading partial symbols, and then use it (if known) to | |
1669 | set the language. This would be a win for formats that encode the | |
1670 | language in an easily discoverable place, such as DWARF. For | |
1671 | stabs, we can jump through hoops looking for specially named | |
1672 | symbols or try to intuit the language from the specific type of | |
1673 | stabs we find, but we can't do that until later when we read in | |
1674 | full symbols. */ | |
c906108c | 1675 | |
8b60591b | 1676 | void |
fba45db2 | 1677 | set_initial_language (void) |
c906108c | 1678 | { |
c5aa993b | 1679 | enum language lang = language_unknown; |
c906108c | 1680 | |
01f8c46d JK |
1681 | if (language_of_main != language_unknown) |
1682 | lang = language_of_main; | |
1683 | else | |
1684 | { | |
1685 | const char *filename; | |
f888f159 | 1686 | |
01f8c46d JK |
1687 | filename = find_main_filename (); |
1688 | if (filename != NULL) | |
1689 | lang = deduce_language_from_filename (filename); | |
1690 | } | |
cb2f3a29 | 1691 | |
ccefe4c4 TT |
1692 | if (lang == language_unknown) |
1693 | { | |
1694 | /* Make C the default language */ | |
1695 | lang = language_c; | |
c906108c | 1696 | } |
ccefe4c4 TT |
1697 | |
1698 | set_language (lang); | |
1699 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1700 | } |
1701 | ||
874f5765 | 1702 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1703 | open it normally. Returns a new reference to the BFD. On error, |
1704 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1705 | |
1706 | bfd * | |
08d2cd74 | 1707 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1708 | { |
520b0001 TT |
1709 | bfd *result; |
1710 | ||
874f5765 | 1711 | if (remote_filename_p (name)) |
520b0001 | 1712 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1713 | else |
1c00ec6b | 1714 | result = gdb_bfd_open (name, gnutarget, -1); |
520b0001 | 1715 | |
520b0001 | 1716 | return result; |
874f5765 TG |
1717 | } |
1718 | ||
1719 | ||
cb2f3a29 MK |
1720 | /* Open the file specified by NAME and hand it off to BFD for |
1721 | preliminary analysis. Return a newly initialized bfd *, which | |
1722 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1723 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1724 | |
1725 | bfd * | |
fba45db2 | 1726 | symfile_bfd_open (char *name) |
c906108c SS |
1727 | { |
1728 | bfd *sym_bfd; | |
1729 | int desc; | |
1730 | char *absolute_name; | |
1731 | ||
f1838a98 UW |
1732 | if (remote_filename_p (name)) |
1733 | { | |
520b0001 | 1734 | sym_bfd = remote_bfd_open (name, gnutarget); |
f1838a98 | 1735 | if (!sym_bfd) |
a4453b7e TT |
1736 | error (_("`%s': can't open to read symbols: %s."), name, |
1737 | bfd_errmsg (bfd_get_error ())); | |
f1838a98 UW |
1738 | |
1739 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1740 | { | |
f9a062ff | 1741 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 UW |
1742 | error (_("`%s': can't read symbols: %s."), name, |
1743 | bfd_errmsg (bfd_get_error ())); | |
1744 | } | |
1745 | ||
1746 | return sym_bfd; | |
1747 | } | |
1748 | ||
cb2f3a29 | 1749 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1750 | |
1751 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1752 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1753 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1754 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1755 | if (desc < 0) |
1756 | { | |
1757 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1758 | |
c906108c | 1759 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1760 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1761 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1762 | } |
1763 | #endif | |
1764 | if (desc < 0) | |
1765 | { | |
b8c9b27d | 1766 | make_cleanup (xfree, name); |
c906108c SS |
1767 | perror_with_name (name); |
1768 | } | |
cb2f3a29 | 1769 | |
cb2f3a29 MK |
1770 | xfree (name); |
1771 | name = absolute_name; | |
a4453b7e | 1772 | make_cleanup (xfree, name); |
c906108c | 1773 | |
1c00ec6b | 1774 | sym_bfd = gdb_bfd_open (name, gnutarget, desc); |
c906108c SS |
1775 | if (!sym_bfd) |
1776 | { | |
b8c9b27d | 1777 | make_cleanup (xfree, name); |
f1838a98 | 1778 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1779 | bfd_errmsg (bfd_get_error ())); |
1780 | } | |
549c1eea | 1781 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1782 | |
1783 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1784 | { | |
f9a062ff | 1785 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1786 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1787 | bfd_errmsg (bfd_get_error ())); |
1788 | } | |
cb2f3a29 MK |
1789 | |
1790 | return sym_bfd; | |
c906108c SS |
1791 | } |
1792 | ||
cb2f3a29 MK |
1793 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1794 | the section was not found. */ | |
1795 | ||
0e931cf0 JB |
1796 | int |
1797 | get_section_index (struct objfile *objfile, char *section_name) | |
1798 | { | |
1799 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1800 | |
0e931cf0 JB |
1801 | if (sect) |
1802 | return sect->index; | |
1803 | else | |
1804 | return -1; | |
1805 | } | |
1806 | ||
cb2f3a29 MK |
1807 | /* Link SF into the global symtab_fns list. Called on startup by the |
1808 | _initialize routine in each object file format reader, to register | |
b021a221 | 1809 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1810 | |
1811 | void | |
00b5771c | 1812 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1813 | { |
00b5771c | 1814 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1815 | } |
1816 | ||
cb2f3a29 MK |
1817 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1818 | either returns or calls error(). The result is an initialized | |
1819 | struct sym_fns in the objfile structure, that contains cached | |
1820 | information about the symbol file. */ | |
c906108c | 1821 | |
00b5771c | 1822 | static const struct sym_fns * |
31d99776 | 1823 | find_sym_fns (bfd *abfd) |
c906108c | 1824 | { |
00b5771c | 1825 | const struct sym_fns *sf; |
31d99776 | 1826 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1827 | int i; |
c906108c | 1828 | |
75245b24 MS |
1829 | if (our_flavour == bfd_target_srec_flavour |
1830 | || our_flavour == bfd_target_ihex_flavour | |
1831 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1832 | return NULL; /* No symbols. */ |
75245b24 | 1833 | |
00b5771c | 1834 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1835 | if (our_flavour == sf->sym_flavour) |
1836 | return sf; | |
cb2f3a29 | 1837 | |
8a3fe4f8 | 1838 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1839 | bfd_get_target (abfd)); |
c906108c SS |
1840 | } |
1841 | \f | |
cb2f3a29 | 1842 | |
c906108c SS |
1843 | /* This function runs the load command of our current target. */ |
1844 | ||
1845 | static void | |
fba45db2 | 1846 | load_command (char *arg, int from_tty) |
c906108c | 1847 | { |
e5cc9f32 JB |
1848 | dont_repeat (); |
1849 | ||
4487aabf PA |
1850 | /* The user might be reloading because the binary has changed. Take |
1851 | this opportunity to check. */ | |
1852 | reopen_exec_file (); | |
1853 | reread_symbols (); | |
1854 | ||
c906108c | 1855 | if (arg == NULL) |
1986bccd AS |
1856 | { |
1857 | char *parg; | |
1858 | int count = 0; | |
1859 | ||
1860 | parg = arg = get_exec_file (1); | |
1861 | ||
1862 | /* Count how many \ " ' tab space there are in the name. */ | |
1863 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1864 | { | |
1865 | parg++; | |
1866 | count++; | |
1867 | } | |
1868 | ||
1869 | if (count) | |
1870 | { | |
1871 | /* We need to quote this string so buildargv can pull it apart. */ | |
1872 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1873 | char *ptemp = temp; | |
1874 | char *prev; | |
1875 | ||
1876 | make_cleanup (xfree, temp); | |
1877 | ||
1878 | prev = parg = arg; | |
1879 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1880 | { | |
1881 | strncpy (ptemp, prev, parg - prev); | |
1882 | ptemp += parg - prev; | |
1883 | prev = parg++; | |
1884 | *ptemp++ = '\\'; | |
1885 | } | |
1886 | strcpy (ptemp, prev); | |
1887 | ||
1888 | arg = temp; | |
1889 | } | |
1890 | } | |
1891 | ||
c906108c | 1892 | target_load (arg, from_tty); |
2889e661 JB |
1893 | |
1894 | /* After re-loading the executable, we don't really know which | |
1895 | overlays are mapped any more. */ | |
1896 | overlay_cache_invalid = 1; | |
c906108c SS |
1897 | } |
1898 | ||
1899 | /* This version of "load" should be usable for any target. Currently | |
1900 | it is just used for remote targets, not inftarg.c or core files, | |
1901 | on the theory that only in that case is it useful. | |
1902 | ||
1903 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1904 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1905 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1906 | performance compares. */ | |
917317f4 | 1907 | |
917317f4 JM |
1908 | static int validate_download = 0; |
1909 | ||
e4f9b4d5 MS |
1910 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1911 | ||
1912 | static void | |
1913 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1914 | { | |
1915 | bfd_size_type *sum = data; | |
1916 | ||
2c500098 | 1917 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1918 | } |
1919 | ||
1920 | /* Opaque data for load_section_callback. */ | |
1921 | struct load_section_data { | |
f698ca8e | 1922 | CORE_ADDR load_offset; |
a76d924d DJ |
1923 | struct load_progress_data *progress_data; |
1924 | VEC(memory_write_request_s) *requests; | |
1925 | }; | |
1926 | ||
1927 | /* Opaque data for load_progress. */ | |
1928 | struct load_progress_data { | |
1929 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1930 | unsigned long write_count; |
1931 | unsigned long data_count; | |
1932 | bfd_size_type total_size; | |
a76d924d DJ |
1933 | }; |
1934 | ||
1935 | /* Opaque data for load_progress for a single section. */ | |
1936 | struct load_progress_section_data { | |
1937 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1938 | |
a76d924d | 1939 | /* Per-section data. */ |
cf7a04e8 DJ |
1940 | const char *section_name; |
1941 | ULONGEST section_sent; | |
1942 | ULONGEST section_size; | |
1943 | CORE_ADDR lma; | |
1944 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1945 | }; |
1946 | ||
a76d924d | 1947 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1948 | |
1949 | static void | |
1950 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1951 | { | |
a76d924d DJ |
1952 | struct load_progress_section_data *args = untyped_arg; |
1953 | struct load_progress_data *totals; | |
1954 | ||
1955 | if (args == NULL) | |
1956 | /* Writing padding data. No easy way to get at the cumulative | |
1957 | stats, so just ignore this. */ | |
1958 | return; | |
1959 | ||
1960 | totals = args->cumulative; | |
1961 | ||
1962 | if (bytes == 0 && args->section_sent == 0) | |
1963 | { | |
1964 | /* The write is just starting. Let the user know we've started | |
1965 | this section. */ | |
79a45e25 | 1966 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 | 1967 | args->section_name, hex_string (args->section_size), |
f5656ead | 1968 | paddress (target_gdbarch (), args->lma)); |
a76d924d DJ |
1969 | return; |
1970 | } | |
cf7a04e8 DJ |
1971 | |
1972 | if (validate_download) | |
1973 | { | |
1974 | /* Broken memories and broken monitors manifest themselves here | |
1975 | when bring new computers to life. This doubles already slow | |
1976 | downloads. */ | |
1977 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1978 | might add a verify_memory() method to the target vector and | |
1979 | then use that. remote.c could implement that method using | |
1980 | the ``qCRC'' packet. */ | |
1981 | gdb_byte *check = xmalloc (bytes); | |
1982 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1983 | ||
1984 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 | 1985 | error (_("Download verify read failed at %s"), |
f5656ead | 1986 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1987 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 | 1988 | error (_("Download verify compare failed at %s"), |
f5656ead | 1989 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 DJ |
1990 | do_cleanups (verify_cleanups); |
1991 | } | |
a76d924d | 1992 | totals->data_count += bytes; |
cf7a04e8 DJ |
1993 | args->lma += bytes; |
1994 | args->buffer += bytes; | |
a76d924d | 1995 | totals->write_count += 1; |
cf7a04e8 | 1996 | args->section_sent += bytes; |
522002f9 | 1997 | if (check_quit_flag () |
cf7a04e8 DJ |
1998 | || (deprecated_ui_load_progress_hook != NULL |
1999 | && deprecated_ui_load_progress_hook (args->section_name, | |
2000 | args->section_sent))) | |
2001 | error (_("Canceled the download")); | |
2002 | ||
2003 | if (deprecated_show_load_progress != NULL) | |
2004 | deprecated_show_load_progress (args->section_name, | |
2005 | args->section_sent, | |
2006 | args->section_size, | |
a76d924d DJ |
2007 | totals->data_count, |
2008 | totals->total_size); | |
cf7a04e8 DJ |
2009 | } |
2010 | ||
e4f9b4d5 MS |
2011 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2012 | ||
2013 | static void | |
2014 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2015 | { | |
a76d924d | 2016 | struct memory_write_request *new_request; |
e4f9b4d5 | 2017 | struct load_section_data *args = data; |
a76d924d | 2018 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
2019 | bfd_size_type size = bfd_get_section_size (asec); |
2020 | gdb_byte *buffer; | |
cf7a04e8 | 2021 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2022 | |
cf7a04e8 DJ |
2023 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2024 | return; | |
e4f9b4d5 | 2025 | |
cf7a04e8 DJ |
2026 | if (size == 0) |
2027 | return; | |
e4f9b4d5 | 2028 | |
a76d924d DJ |
2029 | new_request = VEC_safe_push (memory_write_request_s, |
2030 | args->requests, NULL); | |
2031 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
2032 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
2033 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
2034 | new_request->end = new_request->begin + size; /* FIXME Should size |
2035 | be in instead? */ | |
a76d924d DJ |
2036 | new_request->data = xmalloc (size); |
2037 | new_request->baton = section_data; | |
cf7a04e8 | 2038 | |
a76d924d | 2039 | buffer = new_request->data; |
cf7a04e8 | 2040 | |
a76d924d DJ |
2041 | section_data->cumulative = args->progress_data; |
2042 | section_data->section_name = sect_name; | |
2043 | section_data->section_size = size; | |
2044 | section_data->lma = new_request->begin; | |
2045 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2046 | |
2047 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2048 | } |
2049 | ||
2050 | /* Clean up an entire memory request vector, including load | |
2051 | data and progress records. */ | |
cf7a04e8 | 2052 | |
a76d924d DJ |
2053 | static void |
2054 | clear_memory_write_data (void *arg) | |
2055 | { | |
2056 | VEC(memory_write_request_s) **vec_p = arg; | |
2057 | VEC(memory_write_request_s) *vec = *vec_p; | |
2058 | int i; | |
2059 | struct memory_write_request *mr; | |
cf7a04e8 | 2060 | |
a76d924d DJ |
2061 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2062 | { | |
2063 | xfree (mr->data); | |
2064 | xfree (mr->baton); | |
2065 | } | |
2066 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2067 | } |
2068 | ||
c906108c | 2069 | void |
917317f4 | 2070 | generic_load (char *args, int from_tty) |
c906108c | 2071 | { |
c906108c | 2072 | bfd *loadfile_bfd; |
2b71414d | 2073 | struct timeval start_time, end_time; |
917317f4 | 2074 | char *filename; |
1986bccd | 2075 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2076 | struct load_section_data cbdata; |
a76d924d | 2077 | struct load_progress_data total_progress; |
79a45e25 | 2078 | struct ui_out *uiout = current_uiout; |
a76d924d | 2079 | |
e4f9b4d5 | 2080 | CORE_ADDR entry; |
1986bccd | 2081 | char **argv; |
e4f9b4d5 | 2082 | |
a76d924d DJ |
2083 | memset (&cbdata, 0, sizeof (cbdata)); |
2084 | memset (&total_progress, 0, sizeof (total_progress)); | |
2085 | cbdata.progress_data = &total_progress; | |
2086 | ||
2087 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2088 | |
d1a41061 PP |
2089 | if (args == NULL) |
2090 | error_no_arg (_("file to load")); | |
1986bccd | 2091 | |
d1a41061 | 2092 | argv = gdb_buildargv (args); |
1986bccd AS |
2093 | make_cleanup_freeargv (argv); |
2094 | ||
2095 | filename = tilde_expand (argv[0]); | |
2096 | make_cleanup (xfree, filename); | |
2097 | ||
2098 | if (argv[1] != NULL) | |
917317f4 | 2099 | { |
f698ca8e | 2100 | const char *endptr; |
ba5f2f8a | 2101 | |
f698ca8e | 2102 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2103 | |
2104 | /* If the last word was not a valid number then | |
2105 | treat it as a file name with spaces in. */ | |
2106 | if (argv[1] == endptr) | |
2107 | error (_("Invalid download offset:%s."), argv[1]); | |
2108 | ||
2109 | if (argv[2] != NULL) | |
2110 | error (_("Too many parameters.")); | |
917317f4 | 2111 | } |
c906108c | 2112 | |
c378eb4e | 2113 | /* Open the file for loading. */ |
1c00ec6b | 2114 | loadfile_bfd = gdb_bfd_open (filename, gnutarget, -1); |
c906108c SS |
2115 | if (loadfile_bfd == NULL) |
2116 | { | |
2117 | perror_with_name (filename); | |
2118 | return; | |
2119 | } | |
917317f4 | 2120 | |
f9a062ff | 2121 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2122 | |
c5aa993b | 2123 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2124 | { |
8a3fe4f8 | 2125 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2126 | bfd_errmsg (bfd_get_error ())); |
2127 | } | |
c5aa993b | 2128 | |
5417f6dc | 2129 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2130 | (void *) &total_progress.total_size); |
2131 | ||
2132 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2133 | |
2b71414d | 2134 | gettimeofday (&start_time, NULL); |
c906108c | 2135 | |
a76d924d DJ |
2136 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2137 | load_progress) != 0) | |
2138 | error (_("Load failed")); | |
c906108c | 2139 | |
2b71414d | 2140 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2141 | |
e4f9b4d5 | 2142 | entry = bfd_get_start_address (loadfile_bfd); |
8c2b9656 | 2143 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
e4f9b4d5 | 2144 | ui_out_text (uiout, "Start address "); |
f5656ead | 2145 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch (), entry)); |
e4f9b4d5 | 2146 | ui_out_text (uiout, ", load size "); |
a76d924d | 2147 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2148 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2149 | /* We were doing this in remote-mips.c, I suspect it is right |
2150 | for other targets too. */ | |
fb14de7b | 2151 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2152 | |
38963c97 DJ |
2153 | /* Reset breakpoints, now that we have changed the load image. For |
2154 | instance, breakpoints may have been set (or reset, by | |
2155 | post_create_inferior) while connected to the target but before we | |
2156 | loaded the program. In that case, the prologue analyzer could | |
2157 | have read instructions from the target to find the right | |
2158 | breakpoint locations. Loading has changed the contents of that | |
2159 | memory. */ | |
2160 | ||
2161 | breakpoint_re_set (); | |
2162 | ||
7ca9f392 AC |
2163 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2164 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2165 | was commented out), making the call confuses GDB if more than one | |
2166 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2167 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2168 | |
a76d924d DJ |
2169 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2170 | total_progress.write_count, | |
2171 | &start_time, &end_time); | |
c906108c SS |
2172 | |
2173 | do_cleanups (old_cleanups); | |
2174 | } | |
2175 | ||
c378eb4e | 2176 | /* Report how fast the transfer went. */ |
c906108c | 2177 | |
917317f4 | 2178 | void |
d9fcf2fb | 2179 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2180 | unsigned long data_count, |
2181 | unsigned long write_count, | |
2b71414d DJ |
2182 | const struct timeval *start_time, |
2183 | const struct timeval *end_time) | |
917317f4 | 2184 | { |
9f43d28c | 2185 | ULONGEST time_count; |
79a45e25 | 2186 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2187 | |
2188 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2189 | accuracy and overflow. */ | |
2190 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2191 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2192 | ||
8b93c638 JM |
2193 | ui_out_text (uiout, "Transfer rate: "); |
2194 | if (time_count > 0) | |
2195 | { | |
9f43d28c DJ |
2196 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2197 | ||
2198 | if (ui_out_is_mi_like_p (uiout)) | |
2199 | { | |
2200 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2201 | ui_out_text (uiout, " bits/sec"); | |
2202 | } | |
2203 | else if (rate < 1024) | |
2204 | { | |
2205 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2206 | ui_out_text (uiout, " bytes/sec"); | |
2207 | } | |
2208 | else | |
2209 | { | |
2210 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2211 | ui_out_text (uiout, " KB/sec"); | |
2212 | } | |
8b93c638 JM |
2213 | } |
2214 | else | |
2215 | { | |
ba5f2f8a | 2216 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2217 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2218 | } |
2219 | if (write_count > 0) | |
2220 | { | |
2221 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2222 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2223 | ui_out_text (uiout, " bytes/write"); |
2224 | } | |
2225 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2226 | } |
2227 | ||
2228 | /* This function allows the addition of incrementally linked object files. | |
2229 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2230 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2231 | special case syntax for the rombug target (Rombug is the boot | |
2232 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2233 | rombug case, the user doesn't need to supply a text address, | |
2234 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2235 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2236 | |
c906108c | 2237 | static void |
fba45db2 | 2238 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2239 | { |
5af949e3 | 2240 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2241 | char *filename = NULL; |
2df3850c | 2242 | int flags = OBJF_USERLOADED; |
c906108c | 2243 | char *arg; |
db162d44 | 2244 | int section_index = 0; |
2acceee2 JM |
2245 | int argcnt = 0; |
2246 | int sec_num = 0; | |
2247 | int i; | |
db162d44 EZ |
2248 | int expecting_sec_name = 0; |
2249 | int expecting_sec_addr = 0; | |
5b96932b | 2250 | char **argv; |
db162d44 | 2251 | |
a39a16c4 | 2252 | struct sect_opt |
2acceee2 | 2253 | { |
2acceee2 JM |
2254 | char *name; |
2255 | char *value; | |
a39a16c4 | 2256 | }; |
db162d44 | 2257 | |
a39a16c4 MM |
2258 | struct section_addr_info *section_addrs; |
2259 | struct sect_opt *sect_opts = NULL; | |
2260 | size_t num_sect_opts = 0; | |
3017564a | 2261 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2262 | |
a39a16c4 | 2263 | num_sect_opts = 16; |
5417f6dc | 2264 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2265 | * sizeof (struct sect_opt)); |
2266 | ||
c906108c SS |
2267 | dont_repeat (); |
2268 | ||
2269 | if (args == NULL) | |
8a3fe4f8 | 2270 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2271 | |
d1a41061 | 2272 | argv = gdb_buildargv (args); |
5b96932b | 2273 | make_cleanup_freeargv (argv); |
db162d44 | 2274 | |
5b96932b AS |
2275 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2276 | { | |
c378eb4e | 2277 | /* Process the argument. */ |
db162d44 | 2278 | if (argcnt == 0) |
c906108c | 2279 | { |
c378eb4e | 2280 | /* The first argument is the file name. */ |
db162d44 | 2281 | filename = tilde_expand (arg); |
3017564a | 2282 | make_cleanup (xfree, filename); |
c906108c | 2283 | } |
db162d44 | 2284 | else |
7a78ae4e ND |
2285 | if (argcnt == 1) |
2286 | { | |
2287 | /* The second argument is always the text address at which | |
c378eb4e | 2288 | to load the program. */ |
7a78ae4e ND |
2289 | sect_opts[section_index].name = ".text"; |
2290 | sect_opts[section_index].value = arg; | |
f414f22f | 2291 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2292 | { |
2293 | num_sect_opts *= 2; | |
5417f6dc | 2294 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2295 | xrealloc (sect_opts, |
5417f6dc | 2296 | num_sect_opts |
a39a16c4 MM |
2297 | * sizeof (struct sect_opt))); |
2298 | } | |
7a78ae4e ND |
2299 | } |
2300 | else | |
2301 | { | |
2302 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2303 | to an option. */ |
7a78ae4e ND |
2304 | |
2305 | if (*arg == '-') | |
2306 | { | |
78a4a9b9 AC |
2307 | if (strcmp (arg, "-readnow") == 0) |
2308 | flags |= OBJF_READNOW; | |
2309 | else if (strcmp (arg, "-s") == 0) | |
2310 | { | |
2311 | expecting_sec_name = 1; | |
2312 | expecting_sec_addr = 1; | |
2313 | } | |
7a78ae4e ND |
2314 | } |
2315 | else | |
2316 | { | |
2317 | if (expecting_sec_name) | |
db162d44 | 2318 | { |
7a78ae4e ND |
2319 | sect_opts[section_index].name = arg; |
2320 | expecting_sec_name = 0; | |
db162d44 EZ |
2321 | } |
2322 | else | |
7a78ae4e ND |
2323 | if (expecting_sec_addr) |
2324 | { | |
2325 | sect_opts[section_index].value = arg; | |
2326 | expecting_sec_addr = 0; | |
f414f22f | 2327 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2328 | { |
2329 | num_sect_opts *= 2; | |
5417f6dc | 2330 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2331 | xrealloc (sect_opts, |
5417f6dc | 2332 | num_sect_opts |
a39a16c4 MM |
2333 | * sizeof (struct sect_opt))); |
2334 | } | |
7a78ae4e ND |
2335 | } |
2336 | else | |
3e43a32a | 2337 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2338 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2339 | } |
2340 | } | |
c906108c | 2341 | } |
c906108c | 2342 | |
927890d0 JB |
2343 | /* This command takes at least two arguments. The first one is a |
2344 | filename, and the second is the address where this file has been | |
2345 | loaded. Abort now if this address hasn't been provided by the | |
2346 | user. */ | |
2347 | if (section_index < 1) | |
2348 | error (_("The address where %s has been loaded is missing"), filename); | |
2349 | ||
c378eb4e | 2350 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2351 | a sect_addr_info structure to be passed around to other |
2352 | functions. We have to split this up into separate print | |
bb599908 | 2353 | statements because hex_string returns a local static |
c378eb4e | 2354 | string. */ |
5417f6dc | 2355 | |
a3f17187 | 2356 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2357 | section_addrs = alloc_section_addr_info (section_index); |
2358 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2359 | for (i = 0; i < section_index; i++) |
c906108c | 2360 | { |
db162d44 EZ |
2361 | CORE_ADDR addr; |
2362 | char *val = sect_opts[i].value; | |
2363 | char *sec = sect_opts[i].name; | |
5417f6dc | 2364 | |
ae822768 | 2365 | addr = parse_and_eval_address (val); |
db162d44 | 2366 | |
db162d44 | 2367 | /* Here we store the section offsets in the order they were |
c378eb4e | 2368 | entered on the command line. */ |
a39a16c4 MM |
2369 | section_addrs->other[sec_num].name = sec; |
2370 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2371 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2372 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2373 | sec_num++; |
2374 | ||
5417f6dc | 2375 | /* The object's sections are initialized when a |
db162d44 | 2376 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2377 | This happens in reread_symbols. |
db162d44 EZ |
2378 | At this point, we don't know what file type this is, |
2379 | so we can't determine what section names are valid. */ | |
2acceee2 | 2380 | } |
db162d44 | 2381 | |
2acceee2 | 2382 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2383 | error (_("Not confirmed.")); |
c906108c | 2384 | |
7eedccfa PP |
2385 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2386 | section_addrs, flags); | |
c906108c SS |
2387 | |
2388 | /* Getting new symbols may change our opinion about what is | |
2389 | frameless. */ | |
2390 | reinit_frame_cache (); | |
db162d44 | 2391 | do_cleanups (my_cleanups); |
c906108c SS |
2392 | } |
2393 | \f | |
70992597 | 2394 | |
4ac39b97 JK |
2395 | typedef struct objfile *objfilep; |
2396 | ||
2397 | DEF_VEC_P (objfilep); | |
2398 | ||
c906108c SS |
2399 | /* Re-read symbols if a symbol-file has changed. */ |
2400 | void | |
fba45db2 | 2401 | reread_symbols (void) |
c906108c SS |
2402 | { |
2403 | struct objfile *objfile; | |
2404 | long new_modtime; | |
c906108c SS |
2405 | struct stat new_statbuf; |
2406 | int res; | |
4ac39b97 JK |
2407 | VEC (objfilep) *new_objfiles = NULL; |
2408 | struct cleanup *all_cleanups; | |
2409 | ||
2410 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2411 | |
2412 | /* With the addition of shared libraries, this should be modified, | |
2413 | the load time should be saved in the partial symbol tables, since | |
2414 | different tables may come from different source files. FIXME. | |
2415 | This routine should then walk down each partial symbol table | |
c378eb4e | 2416 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2417 | |
c5aa993b JM |
2418 | for (objfile = object_files; objfile; objfile = objfile->next) |
2419 | { | |
9cce227f TG |
2420 | /* solib-sunos.c creates one objfile with obfd. */ |
2421 | if (objfile->obfd == NULL) | |
2422 | continue; | |
2423 | ||
2424 | /* Separate debug objfiles are handled in the main objfile. */ | |
2425 | if (objfile->separate_debug_objfile_backlink) | |
2426 | continue; | |
2427 | ||
02aeec7b JB |
2428 | /* If this object is from an archive (what you usually create with |
2429 | `ar', often called a `static library' on most systems, though | |
2430 | a `shared library' on AIX is also an archive), then you should | |
2431 | stat on the archive name, not member name. */ | |
9cce227f TG |
2432 | if (objfile->obfd->my_archive) |
2433 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2434 | else | |
9cce227f TG |
2435 | res = stat (objfile->name, &new_statbuf); |
2436 | if (res != 0) | |
2437 | { | |
c378eb4e | 2438 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2439 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2440 | objfile->name); | |
2441 | continue; | |
2442 | } | |
2443 | new_modtime = new_statbuf.st_mtime; | |
2444 | if (new_modtime != objfile->mtime) | |
2445 | { | |
2446 | struct cleanup *old_cleanups; | |
2447 | struct section_offsets *offsets; | |
2448 | int num_offsets; | |
2449 | char *obfd_filename; | |
2450 | ||
2451 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2452 | objfile->name); | |
2453 | ||
2454 | /* There are various functions like symbol_file_add, | |
2455 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2456 | appear to do what we want. But they have various other | |
2457 | effects which we *don't* want. So we just do stuff | |
2458 | ourselves. We don't worry about mapped files (for one thing, | |
2459 | any mapped file will be out of date). */ | |
2460 | ||
2461 | /* If we get an error, blow away this objfile (not sure if | |
2462 | that is the correct response for things like shared | |
2463 | libraries). */ | |
2464 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2465 | /* We need to do this whenever any symbols go away. */ | |
2466 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2467 | ||
0ba1096a KT |
2468 | if (exec_bfd != NULL |
2469 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2470 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2471 | { |
2472 | /* Reload EXEC_BFD without asking anything. */ | |
2473 | ||
2474 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2475 | } | |
2476 | ||
f6eeced0 JK |
2477 | /* Keep the calls order approx. the same as in free_objfile. */ |
2478 | ||
2479 | /* Free the separate debug objfiles. It will be | |
2480 | automatically recreated by sym_read. */ | |
2481 | free_objfile_separate_debug (objfile); | |
2482 | ||
2483 | /* Remove any references to this objfile in the global | |
2484 | value lists. */ | |
2485 | preserve_values (objfile); | |
2486 | ||
2487 | /* Nuke all the state that we will re-read. Much of the following | |
2488 | code which sets things to NULL really is necessary to tell | |
2489 | other parts of GDB that there is nothing currently there. | |
2490 | ||
2491 | Try to keep the freeing order compatible with free_objfile. */ | |
2492 | ||
2493 | if (objfile->sf != NULL) | |
2494 | { | |
2495 | (*objfile->sf->sym_finish) (objfile); | |
2496 | } | |
2497 | ||
2498 | clear_objfile_data (objfile); | |
2499 | ||
e1507e95 | 2500 | /* Clean up any state BFD has sitting around. */ |
a4453b7e TT |
2501 | { |
2502 | struct bfd *obfd = objfile->obfd; | |
2503 | ||
2504 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2505 | /* Open the new BFD before freeing the old one, so that | |
2506 | the filename remains live. */ | |
08d2cd74 | 2507 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
e1507e95 TT |
2508 | if (objfile->obfd == NULL) |
2509 | { | |
2510 | /* We have to make a cleanup and error here, rather | |
2511 | than erroring later, because once we unref OBFD, | |
2512 | OBFD_FILENAME will be freed. */ | |
2513 | make_cleanup_bfd_unref (obfd); | |
2514 | error (_("Can't open %s to read symbols."), obfd_filename); | |
2515 | } | |
a4453b7e TT |
2516 | gdb_bfd_unref (obfd); |
2517 | } | |
2518 | ||
e1507e95 | 2519 | objfile->name = bfd_get_filename (objfile->obfd); |
9cce227f TG |
2520 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2521 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2522 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2523 | bfd_errmsg (bfd_get_error ())); | |
2524 | ||
2525 | /* Save the offsets, we will nuke them with the rest of the | |
2526 | objfile_obstack. */ | |
2527 | num_offsets = objfile->num_sections; | |
2528 | offsets = ((struct section_offsets *) | |
2529 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2530 | memcpy (offsets, objfile->section_offsets, | |
2531 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2532 | ||
9cce227f TG |
2533 | /* FIXME: Do we have to free a whole linked list, or is this |
2534 | enough? */ | |
2535 | if (objfile->global_psymbols.list) | |
2536 | xfree (objfile->global_psymbols.list); | |
2537 | memset (&objfile->global_psymbols, 0, | |
2538 | sizeof (objfile->global_psymbols)); | |
2539 | if (objfile->static_psymbols.list) | |
2540 | xfree (objfile->static_psymbols.list); | |
2541 | memset (&objfile->static_psymbols, 0, | |
2542 | sizeof (objfile->static_psymbols)); | |
2543 | ||
c378eb4e | 2544 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2545 | psymbol_bcache_free (objfile->psymbol_cache); |
2546 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f TG |
2547 | if (objfile->demangled_names_hash != NULL) |
2548 | { | |
2549 | htab_delete (objfile->demangled_names_hash); | |
2550 | objfile->demangled_names_hash = NULL; | |
2551 | } | |
2552 | obstack_free (&objfile->objfile_obstack, 0); | |
2553 | objfile->sections = NULL; | |
2554 | objfile->symtabs = NULL; | |
2555 | objfile->psymtabs = NULL; | |
2556 | objfile->psymtabs_addrmap = NULL; | |
2557 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2558 | objfile->template_symbols = NULL; |
9cce227f | 2559 | objfile->msymbols = NULL; |
9cce227f TG |
2560 | objfile->minimal_symbol_count = 0; |
2561 | memset (&objfile->msymbol_hash, 0, | |
2562 | sizeof (objfile->msymbol_hash)); | |
2563 | memset (&objfile->msymbol_demangled_hash, 0, | |
2564 | sizeof (objfile->msymbol_demangled_hash)); | |
2565 | ||
706e3705 TT |
2566 | set_objfile_per_bfd (objfile); |
2567 | ||
9cce227f TG |
2568 | /* obstack_init also initializes the obstack so it is |
2569 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2570 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2571 | obstack_init (&objfile->objfile_obstack); |
d82ea6a8 | 2572 | build_objfile_section_table (objfile); |
9cce227f TG |
2573 | terminate_minimal_symbol_table (objfile); |
2574 | ||
2575 | /* We use the same section offsets as from last time. I'm not | |
2576 | sure whether that is always correct for shared libraries. */ | |
2577 | objfile->section_offsets = (struct section_offsets *) | |
2578 | obstack_alloc (&objfile->objfile_obstack, | |
2579 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2580 | memcpy (objfile->section_offsets, offsets, | |
2581 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2582 | objfile->num_sections = num_offsets; | |
2583 | ||
2584 | /* What the hell is sym_new_init for, anyway? The concept of | |
2585 | distinguishing between the main file and additional files | |
2586 | in this way seems rather dubious. */ | |
2587 | if (objfile == symfile_objfile) | |
c906108c | 2588 | { |
9cce227f | 2589 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2590 | } |
9cce227f TG |
2591 | |
2592 | (*objfile->sf->sym_init) (objfile); | |
2593 | clear_complaints (&symfile_complaints, 1, 1); | |
608e2dbb TT |
2594 | |
2595 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2596 | read_symbols (objfile, 0); | |
b11896a5 | 2597 | |
9cce227f | 2598 | if (!objfile_has_symbols (objfile)) |
c906108c | 2599 | { |
9cce227f TG |
2600 | wrap_here (""); |
2601 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2602 | wrap_here (""); | |
c5aa993b | 2603 | } |
9cce227f TG |
2604 | |
2605 | /* We're done reading the symbol file; finish off complaints. */ | |
2606 | clear_complaints (&symfile_complaints, 0, 1); | |
2607 | ||
2608 | /* Getting new symbols may change our opinion about what is | |
2609 | frameless. */ | |
2610 | ||
2611 | reinit_frame_cache (); | |
2612 | ||
2613 | /* Discard cleanups as symbol reading was successful. */ | |
2614 | discard_cleanups (old_cleanups); | |
2615 | ||
2616 | /* If the mtime has changed between the time we set new_modtime | |
2617 | and now, we *want* this to be out of date, so don't call stat | |
2618 | again now. */ | |
2619 | objfile->mtime = new_modtime; | |
9cce227f | 2620 | init_entry_point_info (objfile); |
4ac39b97 JK |
2621 | |
2622 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2623 | } |
2624 | } | |
c906108c | 2625 | |
4ac39b97 | 2626 | if (new_objfiles) |
ea53e89f | 2627 | { |
4ac39b97 JK |
2628 | int ix; |
2629 | ||
ff3536bc UW |
2630 | /* Notify objfiles that we've modified objfile sections. */ |
2631 | objfiles_changed (); | |
2632 | ||
c1e56572 | 2633 | clear_symtab_users (0); |
4ac39b97 JK |
2634 | |
2635 | /* clear_objfile_data for each objfile was called before freeing it and | |
2636 | observer_notify_new_objfile (NULL) has been called by | |
2637 | clear_symtab_users above. Notify the new files now. */ | |
2638 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2639 | observer_notify_new_objfile (objfile); | |
2640 | ||
ea53e89f JB |
2641 | /* At least one objfile has changed, so we can consider that |
2642 | the executable we're debugging has changed too. */ | |
781b42b0 | 2643 | observer_notify_executable_changed (); |
ea53e89f | 2644 | } |
4ac39b97 JK |
2645 | |
2646 | do_cleanups (all_cleanups); | |
c906108c | 2647 | } |
c906108c SS |
2648 | \f |
2649 | ||
c5aa993b JM |
2650 | |
2651 | typedef struct | |
2652 | { | |
2653 | char *ext; | |
c906108c | 2654 | enum language lang; |
c5aa993b JM |
2655 | } |
2656 | filename_language; | |
c906108c | 2657 | |
c5aa993b | 2658 | static filename_language *filename_language_table; |
c906108c SS |
2659 | static int fl_table_size, fl_table_next; |
2660 | ||
2661 | static void | |
fba45db2 | 2662 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2663 | { |
2664 | if (fl_table_next >= fl_table_size) | |
2665 | { | |
2666 | fl_table_size += 10; | |
5417f6dc | 2667 | filename_language_table = |
25bf3106 PM |
2668 | xrealloc (filename_language_table, |
2669 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2670 | } |
2671 | ||
4fcf66da | 2672 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2673 | filename_language_table[fl_table_next].lang = lang; |
2674 | fl_table_next++; | |
2675 | } | |
2676 | ||
2677 | static char *ext_args; | |
920d2a44 AC |
2678 | static void |
2679 | show_ext_args (struct ui_file *file, int from_tty, | |
2680 | struct cmd_list_element *c, const char *value) | |
2681 | { | |
3e43a32a MS |
2682 | fprintf_filtered (file, |
2683 | _("Mapping between filename extension " | |
2684 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2685 | value); |
2686 | } | |
c906108c SS |
2687 | |
2688 | static void | |
26c41df3 | 2689 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2690 | { |
2691 | int i; | |
2692 | char *cp = ext_args; | |
2693 | enum language lang; | |
2694 | ||
c378eb4e | 2695 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2696 | if (*cp != '.') |
8a3fe4f8 | 2697 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2698 | |
2699 | /* Find end of first arg. */ | |
c5aa993b | 2700 | while (*cp && !isspace (*cp)) |
c906108c SS |
2701 | cp++; |
2702 | ||
2703 | if (*cp == '\0') | |
3e43a32a MS |
2704 | error (_("'%s': two arguments required -- " |
2705 | "filename extension and language"), | |
c906108c SS |
2706 | ext_args); |
2707 | ||
c378eb4e | 2708 | /* Null-terminate first arg. */ |
c5aa993b | 2709 | *cp++ = '\0'; |
c906108c SS |
2710 | |
2711 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2712 | cp = skip_spaces (cp); |
c906108c SS |
2713 | |
2714 | if (*cp == '\0') | |
3e43a32a MS |
2715 | error (_("'%s': two arguments required -- " |
2716 | "filename extension and language"), | |
c906108c SS |
2717 | ext_args); |
2718 | ||
2719 | /* Lookup the language from among those we know. */ | |
2720 | lang = language_enum (cp); | |
2721 | ||
2722 | /* Now lookup the filename extension: do we already know it? */ | |
2723 | for (i = 0; i < fl_table_next; i++) | |
2724 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2725 | break; | |
2726 | ||
2727 | if (i >= fl_table_next) | |
2728 | { | |
c378eb4e | 2729 | /* New file extension. */ |
c906108c SS |
2730 | add_filename_language (ext_args, lang); |
2731 | } | |
2732 | else | |
2733 | { | |
c378eb4e | 2734 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2735 | |
2736 | /* if (from_tty) */ | |
2737 | /* query ("Really make files of type %s '%s'?", */ | |
2738 | /* ext_args, language_str (lang)); */ | |
2739 | ||
b8c9b27d | 2740 | xfree (filename_language_table[i].ext); |
4fcf66da | 2741 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2742 | filename_language_table[i].lang = lang; |
2743 | } | |
2744 | } | |
2745 | ||
2746 | static void | |
fba45db2 | 2747 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2748 | { |
2749 | int i; | |
2750 | ||
a3f17187 | 2751 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2752 | printf_filtered ("\n\n"); |
2753 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2754 | printf_filtered ("\t%s\t- %s\n", |
2755 | filename_language_table[i].ext, | |
c906108c SS |
2756 | language_str (filename_language_table[i].lang)); |
2757 | } | |
2758 | ||
2759 | static void | |
fba45db2 | 2760 | init_filename_language_table (void) |
c906108c | 2761 | { |
c378eb4e | 2762 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2763 | { |
2764 | fl_table_size = 20; | |
2765 | fl_table_next = 0; | |
c5aa993b | 2766 | filename_language_table = |
c906108c | 2767 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2768 | add_filename_language (".c", language_c); |
6aecb9c2 | 2769 | add_filename_language (".d", language_d); |
c5aa993b JM |
2770 | add_filename_language (".C", language_cplus); |
2771 | add_filename_language (".cc", language_cplus); | |
2772 | add_filename_language (".cp", language_cplus); | |
2773 | add_filename_language (".cpp", language_cplus); | |
2774 | add_filename_language (".cxx", language_cplus); | |
2775 | add_filename_language (".c++", language_cplus); | |
2776 | add_filename_language (".java", language_java); | |
c906108c | 2777 | add_filename_language (".class", language_java); |
da2cf7e0 | 2778 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2779 | add_filename_language (".f", language_fortran); |
2780 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2781 | add_filename_language (".for", language_fortran); |
2782 | add_filename_language (".FOR", language_fortran); | |
2783 | add_filename_language (".ftn", language_fortran); | |
2784 | add_filename_language (".FTN", language_fortran); | |
2785 | add_filename_language (".fpp", language_fortran); | |
2786 | add_filename_language (".FPP", language_fortran); | |
2787 | add_filename_language (".f90", language_fortran); | |
2788 | add_filename_language (".F90", language_fortran); | |
2789 | add_filename_language (".f95", language_fortran); | |
2790 | add_filename_language (".F95", language_fortran); | |
2791 | add_filename_language (".f03", language_fortran); | |
2792 | add_filename_language (".F03", language_fortran); | |
2793 | add_filename_language (".f08", language_fortran); | |
2794 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2795 | add_filename_language (".s", language_asm); |
aa707ed0 | 2796 | add_filename_language (".sx", language_asm); |
c5aa993b | 2797 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2798 | add_filename_language (".pas", language_pascal); |
2799 | add_filename_language (".p", language_pascal); | |
2800 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2801 | add_filename_language (".adb", language_ada); |
2802 | add_filename_language (".ads", language_ada); | |
2803 | add_filename_language (".a", language_ada); | |
2804 | add_filename_language (".ada", language_ada); | |
dde59185 | 2805 | add_filename_language (".dg", language_ada); |
c906108c SS |
2806 | } |
2807 | } | |
2808 | ||
2809 | enum language | |
dd786858 | 2810 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2811 | { |
2812 | int i; | |
2813 | char *cp; | |
2814 | ||
2815 | if (filename != NULL) | |
2816 | if ((cp = strrchr (filename, '.')) != NULL) | |
2817 | for (i = 0; i < fl_table_next; i++) | |
2818 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2819 | return filename_language_table[i].lang; | |
2820 | ||
2821 | return language_unknown; | |
2822 | } | |
2823 | \f | |
2824 | /* allocate_symtab: | |
2825 | ||
2826 | Allocate and partly initialize a new symbol table. Return a pointer | |
2827 | to it. error() if no space. | |
2828 | ||
2829 | Caller must set these fields: | |
c5aa993b JM |
2830 | LINETABLE(symtab) |
2831 | symtab->blockvector | |
2832 | symtab->dirname | |
2833 | symtab->free_code | |
2834 | symtab->free_ptr | |
c906108c SS |
2835 | */ |
2836 | ||
2837 | struct symtab * | |
72b9f47f | 2838 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2839 | { |
52f0bd74 | 2840 | struct symtab *symtab; |
c906108c SS |
2841 | |
2842 | symtab = (struct symtab *) | |
4a146b47 | 2843 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2844 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf | 2845 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
706e3705 | 2846 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2847 | symtab->fullname = NULL; |
2848 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2849 | symtab->debugformat = "unknown"; |
c906108c | 2850 | |
c378eb4e | 2851 | /* Hook it to the objfile it comes from. */ |
c906108c | 2852 | |
c5aa993b JM |
2853 | symtab->objfile = objfile; |
2854 | symtab->next = objfile->symtabs; | |
2855 | objfile->symtabs = symtab; | |
c906108c | 2856 | |
45cfd468 DE |
2857 | if (symtab_create_debug) |
2858 | { | |
2859 | /* Be a bit clever with debugging messages, and don't print objfile | |
2860 | every time, only when it changes. */ | |
2861 | static char *last_objfile_name = NULL; | |
2862 | ||
2863 | if (last_objfile_name == NULL | |
2864 | || strcmp (last_objfile_name, objfile->name) != 0) | |
2865 | { | |
2866 | xfree (last_objfile_name); | |
2867 | last_objfile_name = xstrdup (objfile->name); | |
2868 | fprintf_unfiltered (gdb_stdlog, | |
2869 | "Creating one or more symtabs for objfile %s ...\n", | |
2870 | last_objfile_name); | |
2871 | } | |
2872 | fprintf_unfiltered (gdb_stdlog, | |
b3dbbd6f PM |
2873 | "Created symtab %s for module %s.\n", |
2874 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2875 | } |
2876 | ||
c906108c SS |
2877 | return (symtab); |
2878 | } | |
c906108c | 2879 | \f |
c5aa993b | 2880 | |
c906108c | 2881 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2882 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2883 | |
2884 | void | |
c1e56572 | 2885 | clear_symtab_users (int add_flags) |
c906108c SS |
2886 | { |
2887 | /* Someday, we should do better than this, by only blowing away | |
2888 | the things that really need to be blown. */ | |
c0501be5 DJ |
2889 | |
2890 | /* Clear the "current" symtab first, because it is no longer valid. | |
2891 | breakpoint_re_set may try to access the current symtab. */ | |
2892 | clear_current_source_symtab_and_line (); | |
2893 | ||
c906108c | 2894 | clear_displays (); |
c1e56572 JK |
2895 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2896 | breakpoint_re_set (); | |
1bfeeb0f | 2897 | clear_last_displayed_sal (); |
c906108c | 2898 | clear_pc_function_cache (); |
06d3b283 | 2899 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2900 | |
2901 | /* Clear globals which might have pointed into a removed objfile. | |
2902 | FIXME: It's not clear which of these are supposed to persist | |
2903 | between expressions and which ought to be reset each time. */ | |
2904 | expression_context_block = NULL; | |
2905 | innermost_block = NULL; | |
8756216b DP |
2906 | |
2907 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2908 | varobj_invalidate (); | |
2909 | ||
c906108c SS |
2910 | } |
2911 | ||
74b7792f AC |
2912 | static void |
2913 | clear_symtab_users_cleanup (void *ignore) | |
2914 | { | |
c1e56572 | 2915 | clear_symtab_users (0); |
74b7792f | 2916 | } |
c906108c | 2917 | \f |
c906108c SS |
2918 | /* OVERLAYS: |
2919 | The following code implements an abstraction for debugging overlay sections. | |
2920 | ||
2921 | The target model is as follows: | |
2922 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2923 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2924 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2925 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2926 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2927 | sections should be considered to be mapped from the VMA to the LMA. |
2928 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2929 | For instance, if a section has been mapped then its contents |
c5aa993b | 2930 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2931 | |
2932 | Two levels of debugger support for overlays are available. One is | |
2933 | "manual", in which the debugger relies on the user to tell it which | |
2934 | overlays are currently mapped. This level of support is | |
2935 | implemented entirely in the core debugger, and the information about | |
2936 | whether a section is mapped is kept in the objfile->obj_section table. | |
2937 | ||
2938 | The second level of support is "automatic", and is only available if | |
2939 | the target-specific code provides functionality to read the target's | |
2940 | overlay mapping table, and translate its contents for the debugger | |
2941 | (by updating the mapped state information in the obj_section tables). | |
2942 | ||
2943 | The interface is as follows: | |
c5aa993b JM |
2944 | User commands: |
2945 | overlay map <name> -- tell gdb to consider this section mapped | |
2946 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2947 | overlay list -- list the sections that GDB thinks are mapped | |
2948 | overlay read-target -- get the target's state of what's mapped | |
2949 | overlay off/manual/auto -- set overlay debugging state | |
2950 | Functional interface: | |
2951 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2952 | section, return that section. | |
5417f6dc | 2953 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2954 | the pc, either in its VMA or its LMA |
714835d5 | 2955 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2956 | section_is_overlay(sect): true if section's VMA != LMA |
2957 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2958 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2959 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2960 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2961 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2962 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2963 | either in VMA or LMA depending on whether | |
c378eb4e | 2964 | the symbol's section is currently mapped. */ |
c906108c SS |
2965 | |
2966 | /* Overlay debugging state: */ | |
2967 | ||
d874f1e2 | 2968 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2969 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2970 | |
c906108c | 2971 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2972 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2973 | SECTION is loaded at an address different from where it will "run". */ |
2974 | ||
2975 | int | |
714835d5 | 2976 | section_is_overlay (struct obj_section *section) |
c906108c | 2977 | { |
714835d5 UW |
2978 | if (overlay_debugging && section) |
2979 | { | |
2980 | bfd *abfd = section->objfile->obfd; | |
2981 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2982 | |
714835d5 UW |
2983 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2984 | && bfd_section_lma (abfd, bfd_section) | |
2985 | != bfd_section_vma (abfd, bfd_section)) | |
2986 | return 1; | |
2987 | } | |
c906108c SS |
2988 | |
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | /* Function: overlay_invalidate_all (void) | |
2993 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2994 | ||
2995 | static void | |
fba45db2 | 2996 | overlay_invalidate_all (void) |
c906108c | 2997 | { |
c5aa993b | 2998 | struct objfile *objfile; |
c906108c SS |
2999 | struct obj_section *sect; |
3000 | ||
3001 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3002 | if (section_is_overlay (sect)) |
3003 | sect->ovly_mapped = -1; | |
c906108c SS |
3004 | } |
3005 | ||
714835d5 | 3006 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3007 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3008 | |
3009 | Access to the ovly_mapped flag is restricted to this function, so | |
3010 | that we can do automatic update. If the global flag | |
3011 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3012 | overlay_invalidate_all. If the mapped state of the particular | |
3013 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3014 | ||
714835d5 UW |
3015 | int |
3016 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3017 | { |
9216df95 UW |
3018 | struct gdbarch *gdbarch; |
3019 | ||
714835d5 | 3020 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3021 | return 0; |
3022 | ||
c5aa993b | 3023 | switch (overlay_debugging) |
c906108c SS |
3024 | { |
3025 | default: | |
d874f1e2 | 3026 | case ovly_off: |
c5aa993b | 3027 | return 0; /* overlay debugging off */ |
d874f1e2 | 3028 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3029 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3030 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3031 | gdbarch = get_objfile_arch (osect->objfile); |
3032 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3033 | { |
3034 | if (overlay_cache_invalid) | |
3035 | { | |
3036 | overlay_invalidate_all (); | |
3037 | overlay_cache_invalid = 0; | |
3038 | } | |
3039 | if (osect->ovly_mapped == -1) | |
9216df95 | 3040 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3041 | } |
3042 | /* fall thru to manual case */ | |
d874f1e2 | 3043 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3044 | return osect->ovly_mapped == 1; |
3045 | } | |
3046 | } | |
3047 | ||
c906108c SS |
3048 | /* Function: pc_in_unmapped_range |
3049 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3050 | ||
3051 | CORE_ADDR | |
714835d5 | 3052 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3053 | { |
714835d5 UW |
3054 | if (section_is_overlay (section)) |
3055 | { | |
3056 | bfd *abfd = section->objfile->obfd; | |
3057 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3058 | |
714835d5 UW |
3059 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3060 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3061 | CORE_ADDR offset = obj_section_offset (section); | |
3062 | ||
3063 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3064 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3065 | return 1; | |
3066 | } | |
c906108c | 3067 | |
c906108c SS |
3068 | return 0; |
3069 | } | |
3070 | ||
3071 | /* Function: pc_in_mapped_range | |
3072 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3073 | ||
3074 | CORE_ADDR | |
714835d5 | 3075 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3076 | { |
714835d5 UW |
3077 | if (section_is_overlay (section)) |
3078 | { | |
3079 | if (obj_section_addr (section) <= pc | |
3080 | && pc < obj_section_endaddr (section)) | |
3081 | return 1; | |
3082 | } | |
c906108c | 3083 | |
c906108c SS |
3084 | return 0; |
3085 | } | |
3086 | ||
9ec8e6a0 JB |
3087 | |
3088 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3089 | otherwise. */ | |
b9362cc7 | 3090 | static int |
714835d5 | 3091 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3092 | { |
714835d5 UW |
3093 | CORE_ADDR a_start = obj_section_addr (a); |
3094 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3095 | CORE_ADDR b_start = obj_section_addr (b); | |
3096 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3097 | |
3098 | return (a_start < b_end && b_start < a_end); | |
3099 | } | |
3100 | ||
c906108c SS |
3101 | /* Function: overlay_unmapped_address (PC, SECTION) |
3102 | Returns the address corresponding to PC in the unmapped (load) range. | |
3103 | May be the same as PC. */ | |
3104 | ||
3105 | CORE_ADDR | |
714835d5 | 3106 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3107 | { |
714835d5 UW |
3108 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3109 | { | |
3110 | bfd *abfd = section->objfile->obfd; | |
3111 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3112 | |
714835d5 UW |
3113 | return pc + bfd_section_lma (abfd, bfd_section) |
3114 | - bfd_section_vma (abfd, bfd_section); | |
3115 | } | |
c906108c SS |
3116 | |
3117 | return pc; | |
3118 | } | |
3119 | ||
3120 | /* Function: overlay_mapped_address (PC, SECTION) | |
3121 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3122 | May be the same as PC. */ | |
3123 | ||
3124 | CORE_ADDR | |
714835d5 | 3125 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3126 | { |
714835d5 UW |
3127 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3128 | { | |
3129 | bfd *abfd = section->objfile->obfd; | |
3130 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3131 | |
714835d5 UW |
3132 | return pc + bfd_section_vma (abfd, bfd_section) |
3133 | - bfd_section_lma (abfd, bfd_section); | |
3134 | } | |
c906108c SS |
3135 | |
3136 | return pc; | |
3137 | } | |
3138 | ||
3139 | ||
5417f6dc | 3140 | /* Function: symbol_overlayed_address |
c906108c SS |
3141 | Return one of two addresses (relative to the VMA or to the LMA), |
3142 | depending on whether the section is mapped or not. */ | |
3143 | ||
c5aa993b | 3144 | CORE_ADDR |
714835d5 | 3145 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3146 | { |
3147 | if (overlay_debugging) | |
3148 | { | |
c378eb4e | 3149 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3150 | if (section == 0) |
3151 | return address; | |
c378eb4e MS |
3152 | /* If the symbol's section is not an overlay, just return its |
3153 | address. */ | |
c906108c SS |
3154 | if (!section_is_overlay (section)) |
3155 | return address; | |
c378eb4e | 3156 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3157 | if (section_is_mapped (section)) |
3158 | return address; | |
3159 | /* | |
3160 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3161 | * then return its LOADED address rather than its vma address!! | |
3162 | */ | |
3163 | return overlay_unmapped_address (address, section); | |
3164 | } | |
3165 | return address; | |
3166 | } | |
3167 | ||
5417f6dc | 3168 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3169 | Return the best-match overlay section for PC: |
3170 | If PC matches a mapped overlay section's VMA, return that section. | |
3171 | Else if PC matches an unmapped section's VMA, return that section. | |
3172 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3173 | ||
714835d5 | 3174 | struct obj_section * |
fba45db2 | 3175 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3176 | { |
c5aa993b | 3177 | struct objfile *objfile; |
c906108c SS |
3178 | struct obj_section *osect, *best_match = NULL; |
3179 | ||
3180 | if (overlay_debugging) | |
3181 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3182 | if (section_is_overlay (osect)) |
c5aa993b | 3183 | { |
714835d5 | 3184 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3185 | { |
714835d5 UW |
3186 | if (section_is_mapped (osect)) |
3187 | return osect; | |
c5aa993b JM |
3188 | else |
3189 | best_match = osect; | |
3190 | } | |
714835d5 | 3191 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3192 | best_match = osect; |
3193 | } | |
714835d5 | 3194 | return best_match; |
c906108c SS |
3195 | } |
3196 | ||
3197 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3198 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3199 | currently marked as MAPPED, return that section. Else return NULL. */ |
3200 | ||
714835d5 | 3201 | struct obj_section * |
fba45db2 | 3202 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3203 | { |
c5aa993b | 3204 | struct objfile *objfile; |
c906108c SS |
3205 | struct obj_section *osect; |
3206 | ||
3207 | if (overlay_debugging) | |
3208 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3209 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3210 | return osect; | |
c906108c SS |
3211 | |
3212 | return NULL; | |
3213 | } | |
3214 | ||
3215 | /* Function: list_overlays_command | |
c378eb4e | 3216 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3217 | |
5d3055ad | 3218 | static void |
fba45db2 | 3219 | list_overlays_command (char *args, int from_tty) |
c906108c | 3220 | { |
c5aa993b JM |
3221 | int nmapped = 0; |
3222 | struct objfile *objfile; | |
c906108c SS |
3223 | struct obj_section *osect; |
3224 | ||
3225 | if (overlay_debugging) | |
3226 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3227 | if (section_is_mapped (osect)) |
c5aa993b | 3228 | { |
5af949e3 | 3229 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3230 | const char *name; |
3231 | bfd_vma lma, vma; | |
3232 | int size; | |
3233 | ||
3234 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3235 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3236 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3237 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3238 | ||
3239 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3240 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3241 | puts_filtered (" - "); |
5af949e3 | 3242 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3243 | printf_filtered (", mapped at "); |
5af949e3 | 3244 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3245 | puts_filtered (" - "); |
5af949e3 | 3246 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3247 | puts_filtered ("\n"); |
3248 | ||
3249 | nmapped++; | |
3250 | } | |
c906108c | 3251 | if (nmapped == 0) |
a3f17187 | 3252 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3253 | } |
3254 | ||
3255 | /* Function: map_overlay_command | |
3256 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3257 | ||
5d3055ad | 3258 | static void |
fba45db2 | 3259 | map_overlay_command (char *args, int from_tty) |
c906108c | 3260 | { |
c5aa993b JM |
3261 | struct objfile *objfile, *objfile2; |
3262 | struct obj_section *sec, *sec2; | |
c906108c SS |
3263 | |
3264 | if (!overlay_debugging) | |
3e43a32a MS |
3265 | error (_("Overlay debugging not enabled. Use " |
3266 | "either the 'overlay auto' or\n" | |
3267 | "the 'overlay manual' command.")); | |
c906108c SS |
3268 | |
3269 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3270 | error (_("Argument required: name of an overlay section")); |
c906108c | 3271 | |
c378eb4e | 3272 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3273 | ALL_OBJSECTIONS (objfile, sec) |
3274 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3275 | { |
c378eb4e | 3276 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3277 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3278 | continue; /* not an overlay section */ |
3279 | ||
c378eb4e | 3280 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3281 | sec->ovly_mapped = 1; |
3282 | ||
3283 | /* Next, make a pass and unmap any sections that are | |
3284 | overlapped by this new section: */ | |
3285 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3286 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3287 | { |
3288 | if (info_verbose) | |
a3f17187 | 3289 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3290 | bfd_section_name (objfile->obfd, |
3291 | sec2->the_bfd_section)); | |
c378eb4e | 3292 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3293 | } |
3294 | return; | |
3295 | } | |
8a3fe4f8 | 3296 | error (_("No overlay section called %s"), args); |
c906108c SS |
3297 | } |
3298 | ||
3299 | /* Function: unmap_overlay_command | |
5417f6dc | 3300 | Mark the overlay section as unmapped |
c906108c SS |
3301 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3302 | ||
5d3055ad | 3303 | static void |
fba45db2 | 3304 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3305 | { |
c5aa993b | 3306 | struct objfile *objfile; |
c906108c SS |
3307 | struct obj_section *sec; |
3308 | ||
3309 | if (!overlay_debugging) | |
3e43a32a MS |
3310 | error (_("Overlay debugging not enabled. " |
3311 | "Use either the 'overlay auto' or\n" | |
3312 | "the 'overlay manual' command.")); | |
c906108c SS |
3313 | |
3314 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3315 | error (_("Argument required: name of an overlay section")); |
c906108c | 3316 | |
c378eb4e | 3317 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3318 | ALL_OBJSECTIONS (objfile, sec) |
3319 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3320 | { |
3321 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3322 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3323 | sec->ovly_mapped = 0; |
3324 | return; | |
3325 | } | |
8a3fe4f8 | 3326 | error (_("No overlay section called %s"), args); |
c906108c SS |
3327 | } |
3328 | ||
3329 | /* Function: overlay_auto_command | |
3330 | A utility command to turn on overlay debugging. | |
c378eb4e | 3331 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3332 | |
3333 | static void | |
fba45db2 | 3334 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3335 | { |
d874f1e2 | 3336 | overlay_debugging = ovly_auto; |
1900040c | 3337 | enable_overlay_breakpoints (); |
c906108c | 3338 | if (info_verbose) |
a3f17187 | 3339 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3340 | } |
3341 | ||
3342 | /* Function: overlay_manual_command | |
3343 | A utility command to turn on overlay debugging. | |
c378eb4e | 3344 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3345 | |
3346 | static void | |
fba45db2 | 3347 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3348 | { |
d874f1e2 | 3349 | overlay_debugging = ovly_on; |
1900040c | 3350 | disable_overlay_breakpoints (); |
c906108c | 3351 | if (info_verbose) |
a3f17187 | 3352 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3353 | } |
3354 | ||
3355 | /* Function: overlay_off_command | |
3356 | A utility command to turn on overlay debugging. | |
c378eb4e | 3357 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3358 | |
3359 | static void | |
fba45db2 | 3360 | overlay_off_command (char *args, int from_tty) |
c906108c | 3361 | { |
d874f1e2 | 3362 | overlay_debugging = ovly_off; |
1900040c | 3363 | disable_overlay_breakpoints (); |
c906108c | 3364 | if (info_verbose) |
a3f17187 | 3365 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3366 | } |
3367 | ||
3368 | static void | |
fba45db2 | 3369 | overlay_load_command (char *args, int from_tty) |
c906108c | 3370 | { |
e17c207e UW |
3371 | struct gdbarch *gdbarch = get_current_arch (); |
3372 | ||
3373 | if (gdbarch_overlay_update_p (gdbarch)) | |
3374 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3375 | else |
8a3fe4f8 | 3376 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3377 | } |
3378 | ||
3379 | /* Function: overlay_command | |
c378eb4e | 3380 | A place-holder for a mis-typed command. */ |
c906108c | 3381 | |
c378eb4e | 3382 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3383 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3384 | |
3385 | static void | |
fba45db2 | 3386 | overlay_command (char *args, int from_tty) |
c906108c | 3387 | { |
c5aa993b | 3388 | printf_unfiltered |
c906108c SS |
3389 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3390 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3391 | } | |
3392 | ||
3393 | ||
3394 | /* Target Overlays for the "Simplest" overlay manager: | |
3395 | ||
5417f6dc RM |
3396 | This is GDB's default target overlay layer. It works with the |
3397 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3398 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3399 | so targets that use a different runtime overlay manager can |
c906108c SS |
3400 | substitute their own overlay_update function and take over the |
3401 | function pointer. | |
3402 | ||
3403 | The overlay_update function pokes around in the target's data structures | |
3404 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3405 | this information. | |
3406 | ||
3407 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3408 | unsigned _novlys; /# number of overlay sections #/ |
3409 | unsigned _ovly_table[_novlys][4] = { | |
3410 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3411 | {..., ..., ..., ...}, | |
3412 | } | |
3413 | unsigned _novly_regions; /# number of overlay regions #/ | |
3414 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3415 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3416 | {..., ..., ...}, | |
3417 | } | |
c906108c SS |
3418 | These functions will attempt to update GDB's mappedness state in the |
3419 | symbol section table, based on the target's mappedness state. | |
3420 | ||
3421 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3422 | attempt to detect when the cached copy is invalidated. The main | |
3423 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3424 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3425 | the target (whenever possible). */ |
c906108c SS |
3426 | |
3427 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3428 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3429 | static unsigned cache_novlys = 0; |
c906108c | 3430 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3431 | enum ovly_index |
3432 | { | |
3433 | VMA, SIZE, LMA, MAPPED | |
3434 | }; | |
c906108c | 3435 | |
c378eb4e | 3436 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3437 | static void |
fba45db2 | 3438 | simple_free_overlay_table (void) |
c906108c SS |
3439 | { |
3440 | if (cache_ovly_table) | |
b8c9b27d | 3441 | xfree (cache_ovly_table); |
c5aa993b | 3442 | cache_novlys = 0; |
c906108c SS |
3443 | cache_ovly_table = NULL; |
3444 | cache_ovly_table_base = 0; | |
3445 | } | |
3446 | ||
9216df95 | 3447 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3448 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3449 | static void |
9216df95 | 3450 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3451 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3452 | { |
c378eb4e | 3453 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3454 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3455 | int i; |
c906108c | 3456 | |
9216df95 | 3457 | read_memory (memaddr, buf, len * size); |
c906108c | 3458 | for (i = 0; i < len; i++) |
e17a4113 | 3459 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3460 | } |
3461 | ||
3462 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3463 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3464 | static int |
fba45db2 | 3465 | simple_read_overlay_table (void) |
c906108c | 3466 | { |
0d43edd1 | 3467 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3468 | struct gdbarch *gdbarch; |
3469 | int word_size; | |
e17a4113 | 3470 | enum bfd_endian byte_order; |
c906108c SS |
3471 | |
3472 | simple_free_overlay_table (); | |
9b27852e | 3473 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3474 | if (! novlys_msym) |
c906108c | 3475 | { |
8a3fe4f8 | 3476 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3477 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3478 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3479 | return 0; |
c906108c | 3480 | } |
0d43edd1 | 3481 | |
9b27852e | 3482 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3483 | if (! ovly_table_msym) |
3484 | { | |
8a3fe4f8 | 3485 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3486 | "`_ovly_table' array\n" |
8a3fe4f8 | 3487 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3488 | return 0; |
3489 | } | |
3490 | ||
9216df95 UW |
3491 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3492 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3493 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3494 | |
e17a4113 UW |
3495 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3496 | 4, byte_order); | |
0d43edd1 JB |
3497 | cache_ovly_table |
3498 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3499 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3500 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3501 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3502 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3503 | |
c5aa993b | 3504 | return 1; /* SUCCESS */ |
c906108c SS |
3505 | } |
3506 | ||
5417f6dc | 3507 | /* Function: simple_overlay_update_1 |
c906108c SS |
3508 | A helper function for simple_overlay_update. Assuming a cached copy |
3509 | of _ovly_table exists, look through it to find an entry whose vma, | |
3510 | lma and size match those of OSECT. Re-read the entry and make sure | |
3511 | it still matches OSECT (else the table may no longer be valid). | |
3512 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3513 | success, 0 for failure. */ | |
3514 | ||
3515 | static int | |
fba45db2 | 3516 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3517 | { |
3518 | int i, size; | |
fbd35540 MS |
3519 | bfd *obfd = osect->objfile->obfd; |
3520 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3521 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3522 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3523 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3524 | |
2c500098 | 3525 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3526 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3527 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3528 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3529 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3530 | { |
9216df95 UW |
3531 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3532 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3533 | 4, word_size, byte_order); |
fbd35540 MS |
3534 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3535 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3536 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3537 | { |
3538 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3539 | return 1; | |
3540 | } | |
c378eb4e | 3541 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3542 | return 0; |
3543 | } | |
3544 | return 0; | |
3545 | } | |
3546 | ||
3547 | /* Function: simple_overlay_update | |
5417f6dc RM |
3548 | If OSECT is NULL, then update all sections' mapped state |
3549 | (after re-reading the entire target _ovly_table). | |
3550 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3551 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3552 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3553 | re-read the entire cache, and go ahead and update all sections. */ |
3554 | ||
1c772458 | 3555 | void |
fba45db2 | 3556 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3557 | { |
c5aa993b | 3558 | struct objfile *objfile; |
c906108c | 3559 | |
c378eb4e | 3560 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3561 | if (osect) |
c378eb4e | 3562 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3563 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3564 | { |
3565 | /* Does its cached location match what's currently in the | |
3566 | symtab? */ | |
3567 | struct minimal_symbol *minsym | |
3568 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3569 | ||
3570 | if (minsym == NULL) | |
3571 | error (_("Error reading inferior's overlay table: couldn't " | |
3572 | "find `_ovly_table' array\n" | |
3573 | "in inferior. Use `overlay manual' mode.")); | |
3574 | ||
3575 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3576 | /* Then go ahead and try to look up this single section in | |
3577 | the cache. */ | |
3578 | if (simple_overlay_update_1 (osect)) | |
3579 | /* Found it! We're done. */ | |
3580 | return; | |
3581 | } | |
c906108c SS |
3582 | |
3583 | /* Cached table no good: need to read the entire table anew. | |
3584 | Or else we want all the sections, in which case it's actually | |
3585 | more efficient to read the whole table in one block anyway. */ | |
3586 | ||
0d43edd1 JB |
3587 | if (! simple_read_overlay_table ()) |
3588 | return; | |
3589 | ||
c378eb4e | 3590 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3591 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3592 | if (section_is_overlay (osect)) |
c5aa993b JM |
3593 | { |
3594 | int i, size; | |
fbd35540 MS |
3595 | bfd *obfd = osect->objfile->obfd; |
3596 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3597 | |
2c500098 | 3598 | size = bfd_get_section_size (bsect); |
c5aa993b | 3599 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3600 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3601 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3602 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3603 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3604 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3605 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3606 | } |
3607 | } | |
c906108c SS |
3608 | } |
3609 | ||
086df311 DJ |
3610 | /* Set the output sections and output offsets for section SECTP in |
3611 | ABFD. The relocation code in BFD will read these offsets, so we | |
3612 | need to be sure they're initialized. We map each section to itself, | |
3613 | with no offset; this means that SECTP->vma will be honored. */ | |
3614 | ||
3615 | static void | |
3616 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3617 | { | |
3618 | sectp->output_section = sectp; | |
3619 | sectp->output_offset = 0; | |
3620 | } | |
3621 | ||
ac8035ab TG |
3622 | /* Default implementation for sym_relocate. */ |
3623 | ||
3624 | ||
3625 | bfd_byte * | |
3626 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3627 | bfd_byte *buf) | |
3628 | { | |
3019eac3 DE |
3629 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3630 | DWO file. */ | |
3631 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3632 | |
3633 | /* We're only interested in sections with relocation | |
3634 | information. */ | |
3635 | if ((sectp->flags & SEC_RELOC) == 0) | |
3636 | return NULL; | |
3637 | ||
3638 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3639 | all sections begin at 0. */ | |
3640 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3641 | ||
3642 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3643 | } | |
3644 | ||
086df311 DJ |
3645 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3646 | contents are stored in BUF if it is non-NULL, or returned in a | |
3647 | malloc'd buffer otherwise. | |
3648 | ||
3649 | For some platforms and debug info formats, shared libraries contain | |
3650 | relocations against the debug sections (particularly for DWARF-2; | |
3651 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3652 | the version of the linker in use). Also, ELF object files naturally | |
3653 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3654 | the relocations in order to get the locations of symbols correct. |
3655 | Another example that may require relocation processing, is the | |
3656 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3657 | debug section. */ | |
086df311 DJ |
3658 | |
3659 | bfd_byte * | |
ac8035ab TG |
3660 | symfile_relocate_debug_section (struct objfile *objfile, |
3661 | asection *sectp, bfd_byte *buf) | |
086df311 | 3662 | { |
ac8035ab | 3663 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3664 | |
ac8035ab | 3665 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3666 | } |
c906108c | 3667 | |
31d99776 DJ |
3668 | struct symfile_segment_data * |
3669 | get_symfile_segment_data (bfd *abfd) | |
3670 | { | |
00b5771c | 3671 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3672 | |
3673 | if (sf == NULL) | |
3674 | return NULL; | |
3675 | ||
3676 | return sf->sym_segments (abfd); | |
3677 | } | |
3678 | ||
3679 | void | |
3680 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3681 | { | |
3682 | xfree (data->segment_bases); | |
3683 | xfree (data->segment_sizes); | |
3684 | xfree (data->segment_info); | |
3685 | xfree (data); | |
3686 | } | |
3687 | ||
28c32713 JB |
3688 | |
3689 | /* Given: | |
3690 | - DATA, containing segment addresses from the object file ABFD, and | |
3691 | the mapping from ABFD's sections onto the segments that own them, | |
3692 | and | |
3693 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3694 | segment addresses reported by the target, | |
3695 | store the appropriate offsets for each section in OFFSETS. | |
3696 | ||
3697 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3698 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3699 | ||
8d385431 DJ |
3700 | If there are more entries, then ignore the extra. The target may |
3701 | not be able to distinguish between an empty data segment and a | |
3702 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3703 | int |
3704 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3705 | struct section_offsets *offsets, | |
3706 | int num_segment_bases, | |
3707 | const CORE_ADDR *segment_bases) | |
3708 | { | |
3709 | int i; | |
3710 | asection *sect; | |
3711 | ||
28c32713 JB |
3712 | /* It doesn't make sense to call this function unless you have some |
3713 | segment base addresses. */ | |
202b96c1 | 3714 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3715 | |
31d99776 DJ |
3716 | /* If we do not have segment mappings for the object file, we |
3717 | can not relocate it by segments. */ | |
3718 | gdb_assert (data != NULL); | |
3719 | gdb_assert (data->num_segments > 0); | |
3720 | ||
31d99776 DJ |
3721 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3722 | { | |
31d99776 DJ |
3723 | int which = data->segment_info[i]; |
3724 | ||
28c32713 JB |
3725 | gdb_assert (0 <= which && which <= data->num_segments); |
3726 | ||
3727 | /* Don't bother computing offsets for sections that aren't | |
3728 | loaded as part of any segment. */ | |
3729 | if (! which) | |
3730 | continue; | |
3731 | ||
3732 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3733 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3734 | if (which > num_segment_bases) |
28c32713 | 3735 | which = num_segment_bases; |
31d99776 | 3736 | |
28c32713 JB |
3737 | offsets->offsets[i] = (segment_bases[which - 1] |
3738 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3739 | } |
3740 | ||
3741 | return 1; | |
3742 | } | |
3743 | ||
3744 | static void | |
3745 | symfile_find_segment_sections (struct objfile *objfile) | |
3746 | { | |
3747 | bfd *abfd = objfile->obfd; | |
3748 | int i; | |
3749 | asection *sect; | |
3750 | struct symfile_segment_data *data; | |
3751 | ||
3752 | data = get_symfile_segment_data (objfile->obfd); | |
3753 | if (data == NULL) | |
3754 | return; | |
3755 | ||
3756 | if (data->num_segments != 1 && data->num_segments != 2) | |
3757 | { | |
3758 | free_symfile_segment_data (data); | |
3759 | return; | |
3760 | } | |
3761 | ||
3762 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3763 | { | |
31d99776 DJ |
3764 | int which = data->segment_info[i]; |
3765 | ||
3766 | if (which == 1) | |
3767 | { | |
3768 | if (objfile->sect_index_text == -1) | |
3769 | objfile->sect_index_text = sect->index; | |
3770 | ||
3771 | if (objfile->sect_index_rodata == -1) | |
3772 | objfile->sect_index_rodata = sect->index; | |
3773 | } | |
3774 | else if (which == 2) | |
3775 | { | |
3776 | if (objfile->sect_index_data == -1) | |
3777 | objfile->sect_index_data = sect->index; | |
3778 | ||
3779 | if (objfile->sect_index_bss == -1) | |
3780 | objfile->sect_index_bss = sect->index; | |
3781 | } | |
3782 | } | |
3783 | ||
3784 | free_symfile_segment_data (data); | |
3785 | } | |
3786 | ||
c906108c | 3787 | void |
fba45db2 | 3788 | _initialize_symfile (void) |
c906108c SS |
3789 | { |
3790 | struct cmd_list_element *c; | |
c5aa993b | 3791 | |
1a966eab AC |
3792 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3793 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3794 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3795 | to execute."), &cmdlist); |
5ba2abeb | 3796 | set_cmd_completer (c, filename_completer); |
c906108c | 3797 | |
1a966eab | 3798 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3799 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3800 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3801 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3802 | The optional arguments are section-name section-address pairs and\n\ |
3803 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3804 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3805 | &cmdlist); |
5ba2abeb | 3806 | set_cmd_completer (c, filename_completer); |
c906108c | 3807 | |
1a966eab AC |
3808 | c = add_cmd ("load", class_files, load_command, _("\ |
3809 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3810 | for access from GDB.\n\ |
3811 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3812 | set_cmd_completer (c, filename_completer); |
c906108c | 3813 | |
c5aa993b | 3814 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3815 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3816 | "overlay ", 0, &cmdlist); |
3817 | ||
3818 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3819 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3820 | ||
c5aa993b | 3821 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3822 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3823 | |
c5aa993b | 3824 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3825 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3826 | |
c5aa993b | 3827 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3828 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3829 | |
c5aa993b | 3830 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3831 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3832 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3833 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3834 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3835 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3836 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3837 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3838 | |
3839 | /* Filename extension to source language lookup table: */ | |
3840 | init_filename_language_table (); | |
26c41df3 AC |
3841 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3842 | &ext_args, _("\ | |
3843 | Set mapping between filename extension and source language."), _("\ | |
3844 | Show mapping between filename extension and source language."), _("\ | |
3845 | Usage: set extension-language .foo bar"), | |
3846 | set_ext_lang_command, | |
920d2a44 | 3847 | show_ext_args, |
26c41df3 | 3848 | &setlist, &showlist); |
c906108c | 3849 | |
c5aa993b | 3850 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3851 | _("All filename extensions associated with a source language.")); |
917317f4 | 3852 | |
525226b5 AC |
3853 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3854 | &debug_file_directory, _("\ | |
24ddea62 JK |
3855 | Set the directories where separate debug symbols are searched for."), _("\ |
3856 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3857 | Separate debug symbols are first searched for in the same\n\ |
3858 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3859 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3860 | each global debug-file-directory component prepended."), |
525226b5 | 3861 | NULL, |
920d2a44 | 3862 | show_debug_file_directory, |
525226b5 | 3863 | &setlist, &showlist); |
c906108c | 3864 | } |