Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1990-2012 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" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
62 | #include "gdb_string.h" | |
63 | #include "gdb_stat.h" | |
64 | #include <ctype.h> | |
65 | #include <time.h> | |
2b71414d | 66 | #include <sys/time.h> |
c906108c | 67 | |
ccefe4c4 | 68 | #include "psymtab.h" |
c906108c | 69 | |
3e43a32a MS |
70 | int (*deprecated_ui_load_progress_hook) (const char *section, |
71 | unsigned long num); | |
9a4105ab | 72 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
73 | unsigned long section_sent, |
74 | unsigned long section_size, | |
75 | unsigned long total_sent, | |
c2d11a7d | 76 | unsigned long total_size); |
769d7dc4 AC |
77 | void (*deprecated_pre_add_symbol_hook) (const char *); |
78 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 79 | |
74b7792f AC |
80 | static void clear_symtab_users_cleanup (void *ignore); |
81 | ||
c378eb4e MS |
82 | /* Global variables owned by this file. */ |
83 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 84 | |
c378eb4e | 85 | /* External variables and functions referenced. */ |
c906108c | 86 | |
a14ed312 | 87 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c | 88 | |
c378eb4e | 89 | /* Functions this file defines. */ |
c906108c | 90 | |
a14ed312 | 91 | static void load_command (char *, int); |
c906108c | 92 | |
d7db6da9 FN |
93 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
94 | ||
a14ed312 | 95 | static void add_symbol_file_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | bfd *symfile_bfd_open (char *); |
c906108c | 98 | |
0e931cf0 JB |
99 | int get_section_index (struct objfile *, char *); |
100 | ||
00b5771c | 101 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 102 | |
a14ed312 | 103 | static void decrement_reading_symtab (void *); |
c906108c | 104 | |
a14ed312 | 105 | static void overlay_invalidate_all (void); |
c906108c | 106 | |
a14ed312 | 107 | void list_overlays_command (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | void map_overlay_command (char *, int); |
c906108c | 110 | |
a14ed312 | 111 | void unmap_overlay_command (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void overlay_auto_command (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static void overlay_manual_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void overlay_off_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void overlay_load_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void overlay_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void simple_free_overlay_table (void); |
c906108c | 124 | |
e17a4113 UW |
125 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
126 | enum bfd_endian); | |
c906108c | 127 | |
a14ed312 | 128 | static int simple_read_overlay_table (void); |
c906108c | 129 | |
a14ed312 | 130 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 131 | |
a14ed312 | 132 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 133 | |
a14ed312 | 134 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 135 | |
a14ed312 | 136 | static void init_filename_language_table (void); |
392a587b | 137 | |
31d99776 DJ |
138 | static void symfile_find_segment_sections (struct objfile *objfile); |
139 | ||
a14ed312 | 140 | void _initialize_symfile (void); |
c906108c SS |
141 | |
142 | /* List of all available sym_fns. On gdb startup, each object file reader | |
143 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 144 | prepared to read. */ |
c906108c | 145 | |
00b5771c TT |
146 | typedef const struct sym_fns *sym_fns_ptr; |
147 | DEF_VEC_P (sym_fns_ptr); | |
148 | ||
149 | static VEC (sym_fns_ptr) *symtab_fns = NULL; | |
c906108c | 150 | |
b7209cb4 FF |
151 | /* If non-zero, shared library symbols will be added automatically |
152 | when the inferior is created, new libraries are loaded, or when | |
153 | attaching to the inferior. This is almost always what users will | |
154 | want to have happen; but for very large programs, the startup time | |
155 | will be excessive, and so if this is a problem, the user can clear | |
156 | this flag and then add the shared library symbols as needed. Note | |
157 | that there is a potential for confusion, since if the shared | |
c906108c | 158 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 159 | report all the functions that are actually present. */ |
c906108c SS |
160 | |
161 | int auto_solib_add = 1; | |
c906108c | 162 | \f |
c5aa993b | 163 | |
c906108c SS |
164 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
165 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
c378eb4e | 166 | Note that the string at PTR does not have to be null terminated, I.e. it |
0d14a781 | 167 | may be part of a larger string and we are only saving a substring. */ |
c906108c SS |
168 | |
169 | char * | |
63ca651f | 170 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 171 | { |
52f0bd74 | 172 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
173 | /* Open-coded memcpy--saves function call time. These strings are usually |
174 | short. FIXME: Is this really still true with a compiler that can | |
c378eb4e | 175 | inline memcpy? */ |
c906108c | 176 | { |
aa1ee363 AC |
177 | const char *p1 = ptr; |
178 | char *p2 = p; | |
63ca651f | 179 | const char *end = ptr + size; |
433759f7 | 180 | |
c906108c SS |
181 | while (p1 != end) |
182 | *p2++ = *p1++; | |
183 | } | |
184 | p[size] = 0; | |
185 | return p; | |
186 | } | |
187 | ||
3e43a32a MS |
188 | /* Concatenate NULL terminated variable argument list of `const char *' |
189 | strings; return the new string. Space is found in the OBSTACKP. | |
190 | Argument list must be terminated by a sentinel expression `(char *) | |
191 | NULL'. */ | |
c906108c SS |
192 | |
193 | char * | |
48cb83fd | 194 | obconcat (struct obstack *obstackp, ...) |
c906108c | 195 | { |
48cb83fd JK |
196 | va_list ap; |
197 | ||
198 | va_start (ap, obstackp); | |
199 | for (;;) | |
200 | { | |
201 | const char *s = va_arg (ap, const char *); | |
202 | ||
203 | if (s == NULL) | |
204 | break; | |
205 | ||
206 | obstack_grow_str (obstackp, s); | |
207 | } | |
208 | va_end (ap); | |
209 | obstack_1grow (obstackp, 0); | |
210 | ||
211 | return obstack_finish (obstackp); | |
c906108c SS |
212 | } |
213 | ||
0d14a781 | 214 | /* True if we are reading a symbol table. */ |
c906108c SS |
215 | |
216 | int currently_reading_symtab = 0; | |
217 | ||
218 | static void | |
fba45db2 | 219 | decrement_reading_symtab (void *dummy) |
c906108c SS |
220 | { |
221 | currently_reading_symtab--; | |
222 | } | |
223 | ||
ccefe4c4 TT |
224 | /* Increment currently_reading_symtab and return a cleanup that can be |
225 | used to decrement it. */ | |
226 | struct cleanup * | |
227 | increment_reading_symtab (void) | |
c906108c | 228 | { |
ccefe4c4 TT |
229 | ++currently_reading_symtab; |
230 | return make_cleanup (decrement_reading_symtab, NULL); | |
c906108c SS |
231 | } |
232 | ||
5417f6dc RM |
233 | /* Remember the lowest-addressed loadable section we've seen. |
234 | This function is called via bfd_map_over_sections. | |
c906108c SS |
235 | |
236 | In case of equal vmas, the section with the largest size becomes the | |
237 | lowest-addressed loadable section. | |
238 | ||
239 | If the vmas and sizes are equal, the last section is considered the | |
240 | lowest-addressed loadable section. */ | |
241 | ||
242 | void | |
4efb68b1 | 243 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 244 | { |
c5aa993b | 245 | asection **lowest = (asection **) obj; |
c906108c | 246 | |
eb73e134 | 247 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
248 | return; |
249 | if (!*lowest) | |
250 | *lowest = sect; /* First loadable section */ | |
251 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
252 | *lowest = sect; /* A lower loadable section */ | |
253 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
254 | && (bfd_section_size (abfd, (*lowest)) | |
255 | <= bfd_section_size (abfd, sect))) | |
256 | *lowest = sect; | |
257 | } | |
258 | ||
a39a16c4 MM |
259 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
260 | ||
261 | struct section_addr_info * | |
262 | alloc_section_addr_info (size_t num_sections) | |
263 | { | |
264 | struct section_addr_info *sap; | |
265 | size_t size; | |
266 | ||
267 | size = (sizeof (struct section_addr_info) | |
268 | + sizeof (struct other_sections) * (num_sections - 1)); | |
269 | sap = (struct section_addr_info *) xmalloc (size); | |
270 | memset (sap, 0, size); | |
271 | sap->num_sections = num_sections; | |
272 | ||
273 | return sap; | |
274 | } | |
62557bbc KB |
275 | |
276 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 277 | an existing section table. */ |
62557bbc KB |
278 | |
279 | extern struct section_addr_info * | |
0542c86d PA |
280 | build_section_addr_info_from_section_table (const struct target_section *start, |
281 | const struct target_section *end) | |
62557bbc KB |
282 | { |
283 | struct section_addr_info *sap; | |
0542c86d | 284 | const struct target_section *stp; |
62557bbc KB |
285 | int oidx; |
286 | ||
a39a16c4 | 287 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
288 | |
289 | for (stp = start, oidx = 0; stp != end; stp++) | |
290 | { | |
5417f6dc | 291 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 292 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 293 | && oidx < end - start) |
62557bbc KB |
294 | { |
295 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 296 | sap->other[oidx].name |
fbd35540 | 297 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
298 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
299 | oidx++; | |
300 | } | |
301 | } | |
302 | ||
303 | return sap; | |
304 | } | |
305 | ||
82ccf5a5 | 306 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 307 | |
82ccf5a5 JK |
308 | static struct section_addr_info * |
309 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
310 | { |
311 | struct section_addr_info *sap; | |
312 | int i; | |
313 | struct bfd_section *sec; | |
314 | ||
82ccf5a5 JK |
315 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
316 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
317 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 318 | { |
82ccf5a5 JK |
319 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
320 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
012836ea JK |
321 | sap->other[i].sectindex = sec->index; |
322 | i++; | |
323 | } | |
089b4803 TG |
324 | return sap; |
325 | } | |
326 | ||
82ccf5a5 JK |
327 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
328 | ||
329 | struct section_addr_info * | |
330 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
331 | { | |
332 | struct section_addr_info *sap; | |
333 | int i; | |
334 | ||
335 | /* Before reread_symbols gets rewritten it is not safe to call: | |
336 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
337 | */ | |
338 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
339 | for (i = 0; i < sap->num_sections && sap->other[i].name; i++) | |
340 | { | |
341 | int sectindex = sap->other[i].sectindex; | |
342 | ||
343 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
344 | } | |
345 | return sap; | |
346 | } | |
62557bbc | 347 | |
c378eb4e | 348 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
349 | |
350 | extern void | |
351 | free_section_addr_info (struct section_addr_info *sap) | |
352 | { | |
353 | int idx; | |
354 | ||
a39a16c4 | 355 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 356 | if (sap->other[idx].name) |
b8c9b27d KB |
357 | xfree (sap->other[idx].name); |
358 | xfree (sap); | |
62557bbc KB |
359 | } |
360 | ||
361 | ||
e8289572 JB |
362 | /* Initialize OBJFILE's sect_index_* members. */ |
363 | static void | |
364 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 365 | { |
e8289572 | 366 | asection *sect; |
c906108c | 367 | int i; |
5417f6dc | 368 | |
b8fbeb18 | 369 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 370 | if (sect) |
b8fbeb18 EZ |
371 | objfile->sect_index_text = sect->index; |
372 | ||
373 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 374 | if (sect) |
b8fbeb18 EZ |
375 | objfile->sect_index_data = sect->index; |
376 | ||
377 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 378 | if (sect) |
b8fbeb18 EZ |
379 | objfile->sect_index_bss = sect->index; |
380 | ||
381 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 382 | if (sect) |
b8fbeb18 EZ |
383 | objfile->sect_index_rodata = sect->index; |
384 | ||
bbcd32ad FF |
385 | /* This is where things get really weird... We MUST have valid |
386 | indices for the various sect_index_* members or gdb will abort. | |
387 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
388 | accomodate that. First, check for a file with the standard |
389 | one or two segments. */ | |
390 | ||
391 | symfile_find_segment_sections (objfile); | |
392 | ||
393 | /* Except when explicitly adding symbol files at some address, | |
394 | section_offsets contains nothing but zeros, so it doesn't matter | |
395 | which slot in section_offsets the individual sect_index_* members | |
396 | index into. So if they are all zero, it is safe to just point | |
397 | all the currently uninitialized indices to the first slot. But | |
398 | beware: if this is the main executable, it may be relocated | |
399 | later, e.g. by the remote qOffsets packet, and then this will | |
400 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
401 | |
402 | for (i = 0; i < objfile->num_sections; i++) | |
403 | { | |
404 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
405 | { | |
406 | break; | |
407 | } | |
408 | } | |
409 | if (i == objfile->num_sections) | |
410 | { | |
411 | if (objfile->sect_index_text == -1) | |
412 | objfile->sect_index_text = 0; | |
413 | if (objfile->sect_index_data == -1) | |
414 | objfile->sect_index_data = 0; | |
415 | if (objfile->sect_index_bss == -1) | |
416 | objfile->sect_index_bss = 0; | |
417 | if (objfile->sect_index_rodata == -1) | |
418 | objfile->sect_index_rodata = 0; | |
419 | } | |
b8fbeb18 | 420 | } |
c906108c | 421 | |
c1bd25fd DJ |
422 | /* The arguments to place_section. */ |
423 | ||
424 | struct place_section_arg | |
425 | { | |
426 | struct section_offsets *offsets; | |
427 | CORE_ADDR lowest; | |
428 | }; | |
429 | ||
430 | /* Find a unique offset to use for loadable section SECT if | |
431 | the user did not provide an offset. */ | |
432 | ||
2c0b251b | 433 | static void |
c1bd25fd DJ |
434 | place_section (bfd *abfd, asection *sect, void *obj) |
435 | { | |
436 | struct place_section_arg *arg = obj; | |
437 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
438 | int done; | |
3bd72c6f | 439 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 440 | |
2711e456 DJ |
441 | /* We are only interested in allocated sections. */ |
442 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
443 | return; |
444 | ||
445 | /* If the user specified an offset, honor it. */ | |
446 | if (offsets[sect->index] != 0) | |
447 | return; | |
448 | ||
449 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
450 | start_addr = (arg->lowest + align - 1) & -align; |
451 | ||
c1bd25fd DJ |
452 | do { |
453 | asection *cur_sec; | |
c1bd25fd | 454 | |
c1bd25fd DJ |
455 | done = 1; |
456 | ||
457 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
458 | { | |
459 | int indx = cur_sec->index; | |
c1bd25fd DJ |
460 | |
461 | /* We don't need to compare against ourself. */ | |
462 | if (cur_sec == sect) | |
463 | continue; | |
464 | ||
2711e456 DJ |
465 | /* We can only conflict with allocated sections. */ |
466 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
467 | continue; |
468 | ||
469 | /* If the section offset is 0, either the section has not been placed | |
470 | yet, or it was the lowest section placed (in which case LOWEST | |
471 | will be past its end). */ | |
472 | if (offsets[indx] == 0) | |
473 | continue; | |
474 | ||
475 | /* If this section would overlap us, then we must move up. */ | |
476 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
477 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
478 | { | |
479 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
480 | start_addr = (start_addr + align - 1) & -align; | |
481 | done = 0; | |
3bd72c6f | 482 | break; |
c1bd25fd DJ |
483 | } |
484 | ||
485 | /* Otherwise, we appear to be OK. So far. */ | |
486 | } | |
487 | } | |
488 | while (!done); | |
489 | ||
490 | offsets[sect->index] = start_addr; | |
491 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 492 | } |
e8289572 | 493 | |
75242ef4 JK |
494 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
495 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
496 | entries. */ | |
e8289572 JB |
497 | |
498 | void | |
75242ef4 JK |
499 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
500 | int num_sections, | |
501 | struct section_addr_info *addrs) | |
e8289572 JB |
502 | { |
503 | int i; | |
504 | ||
75242ef4 | 505 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 506 | |
c378eb4e | 507 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 508 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 509 | { |
75242ef4 | 510 | struct other_sections *osp; |
e8289572 | 511 | |
75242ef4 | 512 | osp = &addrs->other[i]; |
5488dafb | 513 | if (osp->sectindex == -1) |
e8289572 JB |
514 | continue; |
515 | ||
c378eb4e | 516 | /* Record all sections in offsets. */ |
e8289572 | 517 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 518 | the BFD index. */ |
75242ef4 JK |
519 | section_offsets->offsets[osp->sectindex] = osp->addr; |
520 | } | |
521 | } | |
522 | ||
1276c759 JK |
523 | /* Transform section name S for a name comparison. prelink can split section |
524 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
525 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
526 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
527 | (`.sbss') section has invalid (increased) virtual address. */ | |
528 | ||
529 | static const char * | |
530 | addr_section_name (const char *s) | |
531 | { | |
532 | if (strcmp (s, ".dynbss") == 0) | |
533 | return ".bss"; | |
534 | if (strcmp (s, ".sdynbss") == 0) | |
535 | return ".sbss"; | |
536 | ||
537 | return s; | |
538 | } | |
539 | ||
82ccf5a5 JK |
540 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
541 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
542 | ||
543 | static int | |
544 | addrs_section_compar (const void *ap, const void *bp) | |
545 | { | |
546 | const struct other_sections *a = *((struct other_sections **) ap); | |
547 | const struct other_sections *b = *((struct other_sections **) bp); | |
22e048c9 | 548 | int retval; |
82ccf5a5 | 549 | |
1276c759 | 550 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
551 | if (retval) |
552 | return retval; | |
553 | ||
5488dafb | 554 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
555 | } |
556 | ||
557 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
558 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
559 | ||
560 | static struct other_sections ** | |
561 | addrs_section_sort (struct section_addr_info *addrs) | |
562 | { | |
563 | struct other_sections **array; | |
564 | int i; | |
565 | ||
566 | /* `+ 1' for the NULL terminator. */ | |
567 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
568 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
569 | array[i] = &addrs->other[i]; | |
570 | array[i] = NULL; | |
571 | ||
572 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
573 | ||
574 | return array; | |
575 | } | |
576 | ||
75242ef4 | 577 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
578 | also SECTINDEXes specific to ABFD there. This function can be used to |
579 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
580 | |
581 | void | |
582 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
583 | { | |
584 | asection *lower_sect; | |
75242ef4 JK |
585 | CORE_ADDR lower_offset; |
586 | int i; | |
82ccf5a5 JK |
587 | struct cleanup *my_cleanup; |
588 | struct section_addr_info *abfd_addrs; | |
589 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
590 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
591 | |
592 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
593 | continguous sections. */ |
594 | lower_sect = NULL; | |
595 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
596 | if (lower_sect == NULL) |
597 | { | |
598 | warning (_("no loadable sections found in added symbol-file %s"), | |
599 | bfd_get_filename (abfd)); | |
600 | lower_offset = 0; | |
e8289572 | 601 | } |
75242ef4 JK |
602 | else |
603 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
604 | ||
82ccf5a5 JK |
605 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
606 | in ABFD. Section names are not unique - there can be multiple sections of | |
607 | the same name. Also the sections of the same name do not have to be | |
608 | adjacent to each other. Some sections may be present only in one of the | |
609 | files. Even sections present in both files do not have to be in the same | |
610 | order. | |
611 | ||
612 | Use stable sort by name for the sections in both files. Then linearly | |
613 | scan both lists matching as most of the entries as possible. */ | |
614 | ||
615 | addrs_sorted = addrs_section_sort (addrs); | |
616 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
617 | ||
618 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
619 | make_cleanup_free_section_addr_info (abfd_addrs); | |
620 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
621 | make_cleanup (xfree, abfd_addrs_sorted); | |
622 | ||
c378eb4e MS |
623 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
624 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
625 | |
626 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
627 | * addrs->num_sections); | |
628 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
629 | ||
630 | while (*addrs_sorted) | |
631 | { | |
1276c759 | 632 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
633 | |
634 | while (*abfd_addrs_sorted | |
1276c759 JK |
635 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
636 | sect_name) < 0) | |
82ccf5a5 JK |
637 | abfd_addrs_sorted++; |
638 | ||
639 | if (*abfd_addrs_sorted | |
1276c759 JK |
640 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
641 | sect_name) == 0) | |
82ccf5a5 JK |
642 | { |
643 | int index_in_addrs; | |
644 | ||
645 | /* Make the found item directly addressable from ADDRS. */ | |
646 | index_in_addrs = *addrs_sorted - addrs->other; | |
647 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
648 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
649 | ||
650 | /* Never use the same ABFD entry twice. */ | |
651 | abfd_addrs_sorted++; | |
652 | } | |
653 | ||
654 | addrs_sorted++; | |
655 | } | |
656 | ||
75242ef4 JK |
657 | /* Calculate offsets for the loadable sections. |
658 | FIXME! Sections must be in order of increasing loadable section | |
659 | so that contiguous sections can use the lower-offset!!! | |
660 | ||
661 | Adjust offsets if the segments are not contiguous. | |
662 | If the section is contiguous, its offset should be set to | |
663 | the offset of the highest loadable section lower than it | |
664 | (the loadable section directly below it in memory). | |
665 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
666 | ||
667 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
668 | { | |
82ccf5a5 | 669 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
670 | |
671 | if (sect) | |
75242ef4 | 672 | { |
c378eb4e | 673 | /* This is the index used by BFD. */ |
82ccf5a5 | 674 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
675 | |
676 | if (addrs->other[i].addr != 0) | |
75242ef4 | 677 | { |
82ccf5a5 | 678 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 679 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
680 | } |
681 | else | |
672d9c23 | 682 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
683 | } |
684 | else | |
672d9c23 | 685 | { |
1276c759 JK |
686 | /* addr_section_name transformation is not used for SECT_NAME. */ |
687 | const char *sect_name = addrs->other[i].name; | |
688 | ||
b0fcb67f JK |
689 | /* This section does not exist in ABFD, which is normally |
690 | unexpected and we want to issue a warning. | |
691 | ||
4d9743af JK |
692 | However, the ELF prelinker does create a few sections which are |
693 | marked in the main executable as loadable (they are loaded in | |
694 | memory from the DYNAMIC segment) and yet are not present in | |
695 | separate debug info files. This is fine, and should not cause | |
696 | a warning. Shared libraries contain just the section | |
697 | ".gnu.liblist" but it is not marked as loadable there. There is | |
698 | no other way to identify them than by their name as the sections | |
1276c759 JK |
699 | created by prelink have no special flags. |
700 | ||
701 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
702 | |
703 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 704 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
705 | || (strcmp (sect_name, ".bss") == 0 |
706 | && i > 0 | |
707 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
708 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
709 | || (strcmp (sect_name, ".sbss") == 0 | |
710 | && i > 0 | |
711 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
712 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
713 | warning (_("section %s not found in %s"), sect_name, |
714 | bfd_get_filename (abfd)); | |
715 | ||
672d9c23 | 716 | addrs->other[i].addr = 0; |
5488dafb | 717 | addrs->other[i].sectindex = -1; |
672d9c23 | 718 | } |
75242ef4 | 719 | } |
82ccf5a5 JK |
720 | |
721 | do_cleanups (my_cleanup); | |
75242ef4 JK |
722 | } |
723 | ||
724 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
725 | of how to represent it for fast symbol reading. This is the default | |
726 | version of the sym_fns.sym_offsets function for symbol readers that | |
727 | don't need to do anything special. It allocates a section_offsets table | |
728 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
729 | ||
730 | void | |
731 | default_symfile_offsets (struct objfile *objfile, | |
732 | struct section_addr_info *addrs) | |
733 | { | |
734 | objfile->num_sections = bfd_count_sections (objfile->obfd); | |
735 | objfile->section_offsets = (struct section_offsets *) | |
736 | obstack_alloc (&objfile->objfile_obstack, | |
737 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
738 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
739 | objfile->num_sections, addrs); | |
e8289572 | 740 | |
c1bd25fd DJ |
741 | /* For relocatable files, all loadable sections will start at zero. |
742 | The zero is meaningless, so try to pick arbitrary addresses such | |
743 | that no loadable sections overlap. This algorithm is quadratic, | |
744 | but the number of sections in a single object file is generally | |
745 | small. */ | |
746 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
747 | { | |
748 | struct place_section_arg arg; | |
2711e456 DJ |
749 | bfd *abfd = objfile->obfd; |
750 | asection *cur_sec; | |
2711e456 DJ |
751 | |
752 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
753 | /* We do not expect this to happen; just skip this step if the | |
754 | relocatable file has a section with an assigned VMA. */ | |
755 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
756 | break; | |
757 | ||
758 | if (cur_sec == NULL) | |
759 | { | |
760 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
761 | ||
762 | /* Pick non-overlapping offsets for sections the user did not | |
763 | place explicitly. */ | |
764 | arg.offsets = objfile->section_offsets; | |
765 | arg.lowest = 0; | |
766 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
767 | ||
768 | /* Correctly filling in the section offsets is not quite | |
769 | enough. Relocatable files have two properties that | |
770 | (most) shared objects do not: | |
771 | ||
772 | - Their debug information will contain relocations. Some | |
773 | shared libraries do also, but many do not, so this can not | |
774 | be assumed. | |
775 | ||
776 | - If there are multiple code sections they will be loaded | |
777 | at different relative addresses in memory than they are | |
778 | in the objfile, since all sections in the file will start | |
779 | at address zero. | |
780 | ||
781 | Because GDB has very limited ability to map from an | |
782 | address in debug info to the correct code section, | |
783 | it relies on adding SECT_OFF_TEXT to things which might be | |
784 | code. If we clear all the section offsets, and set the | |
785 | section VMAs instead, then symfile_relocate_debug_section | |
786 | will return meaningful debug information pointing at the | |
787 | correct sections. | |
788 | ||
789 | GDB has too many different data structures for section | |
790 | addresses - a bfd, objfile, and so_list all have section | |
791 | tables, as does exec_ops. Some of these could probably | |
792 | be eliminated. */ | |
793 | ||
794 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
795 | cur_sec = cur_sec->next) | |
796 | { | |
797 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
798 | continue; | |
799 | ||
800 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
801 | exec_set_section_address (bfd_get_filename (abfd), |
802 | cur_sec->index, | |
30510692 | 803 | offsets[cur_sec->index]); |
2711e456 DJ |
804 | offsets[cur_sec->index] = 0; |
805 | } | |
806 | } | |
c1bd25fd DJ |
807 | } |
808 | ||
e8289572 | 809 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 810 | .rodata sections. */ |
e8289572 JB |
811 | init_objfile_sect_indices (objfile); |
812 | } | |
813 | ||
814 | ||
31d99776 DJ |
815 | /* Divide the file into segments, which are individual relocatable units. |
816 | This is the default version of the sym_fns.sym_segments function for | |
817 | symbol readers that do not have an explicit representation of segments. | |
818 | It assumes that object files do not have segments, and fully linked | |
819 | files have a single segment. */ | |
820 | ||
821 | struct symfile_segment_data * | |
822 | default_symfile_segments (bfd *abfd) | |
823 | { | |
824 | int num_sections, i; | |
825 | asection *sect; | |
826 | struct symfile_segment_data *data; | |
827 | CORE_ADDR low, high; | |
828 | ||
829 | /* Relocatable files contain enough information to position each | |
830 | loadable section independently; they should not be relocated | |
831 | in segments. */ | |
832 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
833 | return NULL; | |
834 | ||
835 | /* Make sure there is at least one loadable section in the file. */ | |
836 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
837 | { | |
838 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
839 | continue; | |
840 | ||
841 | break; | |
842 | } | |
843 | if (sect == NULL) | |
844 | return NULL; | |
845 | ||
846 | low = bfd_get_section_vma (abfd, sect); | |
847 | high = low + bfd_get_section_size (sect); | |
848 | ||
849 | data = XZALLOC (struct symfile_segment_data); | |
850 | data->num_segments = 1; | |
851 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
852 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
853 | ||
854 | num_sections = bfd_count_sections (abfd); | |
855 | data->segment_info = XCALLOC (num_sections, int); | |
856 | ||
857 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
858 | { | |
859 | CORE_ADDR vma; | |
860 | ||
861 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
862 | continue; | |
863 | ||
864 | vma = bfd_get_section_vma (abfd, sect); | |
865 | if (vma < low) | |
866 | low = vma; | |
867 | if (vma + bfd_get_section_size (sect) > high) | |
868 | high = vma + bfd_get_section_size (sect); | |
869 | ||
870 | data->segment_info[i] = 1; | |
871 | } | |
872 | ||
873 | data->segment_bases[0] = low; | |
874 | data->segment_sizes[0] = high - low; | |
875 | ||
876 | return data; | |
877 | } | |
878 | ||
c906108c SS |
879 | /* Process a symbol file, as either the main file or as a dynamically |
880 | loaded file. | |
881 | ||
96baa820 JM |
882 | OBJFILE is where the symbols are to be read from. |
883 | ||
7e8580c1 JB |
884 | ADDRS is the list of section load addresses. If the user has given |
885 | an 'add-symbol-file' command, then this is the list of offsets and | |
886 | addresses he or she provided as arguments to the command; or, if | |
887 | we're handling a shared library, these are the actual addresses the | |
888 | sections are loaded at, according to the inferior's dynamic linker | |
889 | (as gleaned by GDB's shared library code). We convert each address | |
890 | into an offset from the section VMA's as it appears in the object | |
891 | file, and then call the file's sym_offsets function to convert this | |
892 | into a format-specific offset table --- a `struct section_offsets'. | |
893 | If ADDRS is non-zero, OFFSETS must be zero. | |
894 | ||
895 | OFFSETS is a table of section offsets already in the right | |
896 | format-specific representation. NUM_OFFSETS is the number of | |
897 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
898 | assume this is the proper table the call to sym_offsets described | |
899 | above would produce. Instead of calling sym_offsets, we just dump | |
900 | it right into objfile->section_offsets. (When we're re-reading | |
901 | symbols from an objfile, we don't have the original load address | |
902 | list any more; all we have is the section offset table.) If | |
903 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 904 | |
7eedccfa PP |
905 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
906 | an extra symbol file such as dynamically loaded code, and wether | |
907 | breakpoint reset should be deferred. */ | |
c906108c SS |
908 | |
909 | void | |
7e8580c1 JB |
910 | syms_from_objfile (struct objfile *objfile, |
911 | struct section_addr_info *addrs, | |
912 | struct section_offsets *offsets, | |
913 | int num_offsets, | |
7eedccfa | 914 | int add_flags) |
c906108c | 915 | { |
a39a16c4 | 916 | struct section_addr_info *local_addr = NULL; |
c906108c | 917 | struct cleanup *old_chain; |
7eedccfa | 918 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 919 | |
7e8580c1 | 920 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 921 | |
c906108c | 922 | init_entry_point_info (objfile); |
31d99776 | 923 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 924 | |
75245b24 | 925 | if (objfile->sf == NULL) |
c378eb4e | 926 | return; /* No symbols. */ |
75245b24 | 927 | |
c906108c SS |
928 | /* Make sure that partially constructed symbol tables will be cleaned up |
929 | if an error occurs during symbol reading. */ | |
74b7792f | 930 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 931 | |
a39a16c4 MM |
932 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
933 | list. We now establish the convention that an addr of zero means | |
c378eb4e | 934 | no load address was specified. */ |
a39a16c4 MM |
935 | if (! addrs && ! offsets) |
936 | { | |
5417f6dc | 937 | local_addr |
a39a16c4 MM |
938 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
939 | make_cleanup (xfree, local_addr); | |
940 | addrs = local_addr; | |
941 | } | |
942 | ||
943 | /* Now either addrs or offsets is non-zero. */ | |
944 | ||
c5aa993b | 945 | if (mainline) |
c906108c SS |
946 | { |
947 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 948 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 949 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
950 | |
951 | /* Since no error yet, throw away the old symbol table. */ | |
952 | ||
953 | if (symfile_objfile != NULL) | |
954 | { | |
955 | free_objfile (symfile_objfile); | |
adb7f338 | 956 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
957 | } |
958 | ||
959 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
960 | If the user wants to get rid of them, they should do "symbol-file" |
961 | without arguments first. Not sure this is the best behavior | |
962 | (PR 2207). */ | |
c906108c | 963 | |
c5aa993b | 964 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
965 | } |
966 | ||
967 | /* Convert addr into an offset rather than an absolute address. | |
968 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 969 | and assume that <addr> is where that got loaded. |
c906108c | 970 | |
53a5351d JM |
971 | We no longer warn if the lowest section is not a text segment (as |
972 | happens for the PA64 port. */ | |
0d15807d | 973 | if (addrs && addrs->other[0].name) |
75242ef4 | 974 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
975 | |
976 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
977 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 978 | initial symbol reading for this file. */ |
c906108c | 979 | |
c5aa993b | 980 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 981 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 982 | |
7e8580c1 JB |
983 | if (addrs) |
984 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
985 | else | |
986 | { | |
987 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
988 | ||
989 | /* Just copy in the offset table directly as given to us. */ | |
990 | objfile->num_sections = num_offsets; | |
991 | objfile->section_offsets | |
992 | = ((struct section_offsets *) | |
8b92e4d5 | 993 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
994 | memcpy (objfile->section_offsets, offsets, size); |
995 | ||
996 | init_objfile_sect_indices (objfile); | |
997 | } | |
c906108c | 998 | |
f4352531 | 999 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 1000 | |
b11896a5 TT |
1001 | if ((add_flags & SYMFILE_NO_READ) == 0) |
1002 | require_partial_symbols (objfile, 0); | |
1003 | ||
c906108c SS |
1004 | /* Discard cleanups as symbol reading was successful. */ |
1005 | ||
1006 | discard_cleanups (old_chain); | |
f7545552 | 1007 | xfree (local_addr); |
c906108c SS |
1008 | } |
1009 | ||
1010 | /* Perform required actions after either reading in the initial | |
1011 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1012 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1013 | |
c906108c | 1014 | void |
7eedccfa | 1015 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1016 | { |
c906108c | 1017 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1018 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1019 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1020 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1021 | { |
1022 | /* OK, make it the "real" symbol file. */ | |
1023 | symfile_objfile = objfile; | |
1024 | ||
c1e56572 | 1025 | clear_symtab_users (add_flags); |
c906108c | 1026 | } |
7eedccfa | 1027 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1028 | { |
69de3c6a | 1029 | breakpoint_re_set (); |
c906108c SS |
1030 | } |
1031 | ||
1032 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1033 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1034 | } |
1035 | ||
1036 | /* Process a symbol file, as either the main file or as a dynamically | |
1037 | loaded file. | |
1038 | ||
5417f6dc | 1039 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1040 | A new reference is acquired by this function. |
7904e09f | 1041 | |
7eedccfa PP |
1042 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1043 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1044 | |
1045 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1046 | syms_from_objfile, above. |
1047 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1048 | |
63524580 JK |
1049 | PARENT is the original objfile if ABFD is a separate debug info file. |
1050 | Otherwise PARENT is NULL. | |
1051 | ||
c906108c | 1052 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1053 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1054 | |
7904e09f | 1055 | static struct objfile * |
7eedccfa PP |
1056 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1057 | int add_flags, | |
7904e09f JB |
1058 | struct section_addr_info *addrs, |
1059 | struct section_offsets *offsets, | |
1060 | int num_offsets, | |
63524580 | 1061 | int flags, struct objfile *parent) |
c906108c SS |
1062 | { |
1063 | struct objfile *objfile; | |
5417f6dc | 1064 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1065 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1066 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1067 | const int should_print = ((from_tty || info_verbose) |
1068 | && (readnow_symbol_files | |
1069 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1070 | |
9291a0cd | 1071 | if (readnow_symbol_files) |
b11896a5 TT |
1072 | { |
1073 | flags |= OBJF_READNOW; | |
1074 | add_flags &= ~SYMFILE_NO_READ; | |
1075 | } | |
9291a0cd | 1076 | |
5417f6dc RM |
1077 | /* Give user a chance to burp if we'd be |
1078 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1079 | |
1080 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1081 | && mainline |
c906108c | 1082 | && from_tty |
9e2f0ad4 | 1083 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1084 | error (_("Not confirmed.")); |
c906108c | 1085 | |
0838fb57 | 1086 | objfile = allocate_objfile (abfd, flags | (mainline ? OBJF_MAINLINE : 0)); |
c906108c | 1087 | |
63524580 JK |
1088 | if (parent) |
1089 | add_separate_debug_objfile (objfile, parent); | |
1090 | ||
78a4a9b9 AC |
1091 | /* We either created a new mapped symbol table, mapped an existing |
1092 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1093 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1094 | if (should_print) |
c906108c | 1095 | { |
769d7dc4 AC |
1096 | if (deprecated_pre_add_symbol_hook) |
1097 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1098 | else |
c906108c | 1099 | { |
55333a84 DE |
1100 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1101 | wrap_here (""); | |
1102 | gdb_flush (gdb_stdout); | |
c906108c | 1103 | } |
c906108c | 1104 | } |
78a4a9b9 | 1105 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1106 | add_flags); |
c906108c SS |
1107 | |
1108 | /* We now have at least a partial symbol table. Check to see if the | |
1109 | user requested that all symbols be read on initial access via either | |
1110 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1111 | all partial symbol tables for this objfile if so. */ |
c906108c | 1112 | |
9291a0cd | 1113 | if ((flags & OBJF_READNOW)) |
c906108c | 1114 | { |
b11896a5 | 1115 | if (should_print) |
c906108c | 1116 | { |
a3f17187 | 1117 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1118 | wrap_here (""); |
1119 | gdb_flush (gdb_stdout); | |
1120 | } | |
1121 | ||
ccefe4c4 TT |
1122 | if (objfile->sf) |
1123 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1124 | } |
1125 | ||
b11896a5 | 1126 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1127 | { |
1128 | wrap_here (""); | |
55333a84 | 1129 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1130 | wrap_here (""); |
1131 | } | |
1132 | ||
b11896a5 | 1133 | if (should_print) |
c906108c | 1134 | { |
769d7dc4 AC |
1135 | if (deprecated_post_add_symbol_hook) |
1136 | deprecated_post_add_symbol_hook (); | |
c906108c | 1137 | else |
55333a84 | 1138 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1139 | } |
1140 | ||
481d0f41 JB |
1141 | /* We print some messages regardless of whether 'from_tty || |
1142 | info_verbose' is true, so make sure they go out at the right | |
1143 | time. */ | |
1144 | gdb_flush (gdb_stdout); | |
1145 | ||
109f874e | 1146 | if (objfile->sf == NULL) |
8caee43b PP |
1147 | { |
1148 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1149 | return objfile; /* No symbols. */ |
8caee43b | 1150 | } |
109f874e | 1151 | |
7eedccfa | 1152 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1153 | |
06d3b283 | 1154 | observer_notify_new_objfile (objfile); |
c906108c | 1155 | |
ce7d4522 | 1156 | bfd_cache_close_all (); |
c906108c SS |
1157 | return (objfile); |
1158 | } | |
1159 | ||
9cce227f TG |
1160 | /* Add BFD as a separate debug file for OBJFILE. */ |
1161 | ||
1162 | void | |
1163 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1164 | { | |
15d123c9 | 1165 | struct objfile *new_objfile; |
089b4803 TG |
1166 | struct section_addr_info *sap; |
1167 | struct cleanup *my_cleanup; | |
1168 | ||
1169 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1170 | because sections of BFD may not match sections of OBJFILE and because | |
1171 | vma may have been modified by tools such as prelink. */ | |
1172 | sap = build_section_addr_info_from_objfile (objfile); | |
1173 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1174 | |
15d123c9 | 1175 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1176 | (bfd, symfile_flags, |
089b4803 | 1177 | sap, NULL, 0, |
9cce227f | 1178 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1179 | | OBJF_USERLOADED), |
1180 | objfile); | |
089b4803 TG |
1181 | |
1182 | do_cleanups (my_cleanup); | |
9cce227f | 1183 | } |
7904e09f | 1184 | |
eb4556d7 JB |
1185 | /* Process the symbol file ABFD, as either the main file or as a |
1186 | dynamically loaded file. | |
1187 | ||
1188 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1189 | details. */ | |
1190 | struct objfile * | |
7eedccfa | 1191 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1192 | struct section_addr_info *addrs, |
63524580 | 1193 | int flags, struct objfile *parent) |
eb4556d7 | 1194 | { |
7eedccfa | 1195 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
63524580 | 1196 | flags, parent); |
eb4556d7 JB |
1197 | } |
1198 | ||
1199 | ||
7904e09f JB |
1200 | /* Process a symbol file, as either the main file or as a dynamically |
1201 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1202 | for details. */ | |
1203 | struct objfile * | |
7eedccfa PP |
1204 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1205 | int flags) | |
7904e09f | 1206 | { |
8ac244b4 TT |
1207 | bfd *bfd = symfile_bfd_open (name); |
1208 | struct cleanup *cleanup = make_cleanup_bfd_unref (bfd); | |
1209 | struct objfile *objf; | |
1210 | ||
882f447f | 1211 | objf = symbol_file_add_from_bfd (bfd, add_flags, addrs, flags, NULL); |
8ac244b4 TT |
1212 | do_cleanups (cleanup); |
1213 | return objf; | |
7904e09f JB |
1214 | } |
1215 | ||
1216 | ||
d7db6da9 FN |
1217 | /* Call symbol_file_add() with default values and update whatever is |
1218 | affected by the loading of a new main(). | |
1219 | Used when the file is supplied in the gdb command line | |
1220 | and by some targets with special loading requirements. | |
1221 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1222 | argument for the switches that can only be specified in the symbol_file | |
1223 | command itself. */ | |
5417f6dc | 1224 | |
1adeb98a FN |
1225 | void |
1226 | symbol_file_add_main (char *args, int from_tty) | |
1227 | { | |
d7db6da9 FN |
1228 | symbol_file_add_main_1 (args, from_tty, 0); |
1229 | } | |
1230 | ||
1231 | static void | |
1232 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1233 | { | |
7dcd53a0 TT |
1234 | const int add_flags = (current_inferior ()->symfile_flags |
1235 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1236 | ||
7eedccfa | 1237 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1238 | |
d7db6da9 FN |
1239 | /* Getting new symbols may change our opinion about |
1240 | what is frameless. */ | |
1241 | reinit_frame_cache (); | |
1242 | ||
7dcd53a0 TT |
1243 | if ((flags & SYMFILE_NO_READ) == 0) |
1244 | set_initial_language (); | |
1adeb98a FN |
1245 | } |
1246 | ||
1247 | void | |
1248 | symbol_file_clear (int from_tty) | |
1249 | { | |
1250 | if ((have_full_symbols () || have_partial_symbols ()) | |
1251 | && from_tty | |
0430b0d6 AS |
1252 | && (symfile_objfile |
1253 | ? !query (_("Discard symbol table from `%s'? "), | |
1254 | symfile_objfile->name) | |
1255 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1256 | error (_("Not confirmed.")); |
1adeb98a | 1257 | |
0133421a JK |
1258 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1259 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1260 | no_shared_libraries (NULL, from_tty); |
1261 | ||
0133421a JK |
1262 | free_all_objfiles (); |
1263 | ||
adb7f338 | 1264 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1265 | if (from_tty) |
1266 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1267 | } |
1268 | ||
5b5d99cf JB |
1269 | static char * |
1270 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1271 | { | |
1272 | asection *sect; | |
1273 | bfd_size_type debuglink_size; | |
1274 | unsigned long crc32; | |
1275 | char *contents; | |
1276 | int crc_offset; | |
5417f6dc | 1277 | |
5b5d99cf JB |
1278 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1279 | ||
1280 | if (sect == NULL) | |
1281 | return NULL; | |
1282 | ||
1283 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1284 | |
5b5d99cf JB |
1285 | contents = xmalloc (debuglink_size); |
1286 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1287 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1288 | ||
c378eb4e | 1289 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ |
5b5d99cf JB |
1290 | crc_offset = strlen (contents) + 1; |
1291 | crc_offset = (crc_offset + 3) & ~3; | |
1292 | ||
1293 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1294 | |
5b5d99cf JB |
1295 | *crc32_out = crc32; |
1296 | return contents; | |
1297 | } | |
1298 | ||
904578ed JK |
1299 | /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and |
1300 | return 1. Otherwise print a warning and return 0. ABFD seek position is | |
1301 | not preserved. */ | |
1302 | ||
1303 | static int | |
1304 | get_file_crc (bfd *abfd, unsigned long *file_crc_return) | |
1305 | { | |
1306 | unsigned long file_crc = 0; | |
1307 | ||
1308 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
1309 | { | |
1310 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1311 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | for (;;) | |
1316 | { | |
1317 | gdb_byte buffer[8 * 1024]; | |
1318 | bfd_size_type count; | |
1319 | ||
1320 | count = bfd_bread (buffer, sizeof (buffer), abfd); | |
1321 | if (count == (bfd_size_type) -1) | |
1322 | { | |
1323 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1324 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1325 | return 0; | |
1326 | } | |
1327 | if (count == 0) | |
1328 | break; | |
1329 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1330 | } | |
1331 | ||
1332 | *file_crc_return = file_crc; | |
1333 | return 1; | |
1334 | } | |
1335 | ||
5b5d99cf | 1336 | static int |
287ccc17 | 1337 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1338 | struct objfile *parent_objfile) |
5b5d99cf | 1339 | { |
904578ed JK |
1340 | unsigned long file_crc; |
1341 | int file_crc_p; | |
f1838a98 | 1342 | bfd *abfd; |
32a0e547 | 1343 | struct stat parent_stat, abfd_stat; |
904578ed | 1344 | int verified_as_different; |
32a0e547 JK |
1345 | |
1346 | /* Find a separate debug info file as if symbols would be present in | |
1347 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1348 | section can contain just the basename of PARENT_OBJFILE without any | |
1349 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1350 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1351 | |
0ba1096a | 1352 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1353 | return 0; |
5b5d99cf | 1354 | |
08d2cd74 | 1355 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1356 | |
1357 | if (!abfd) | |
5b5d99cf JB |
1358 | return 0; |
1359 | ||
0ba1096a | 1360 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1361 | |
1362 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1363 | st_ino; they always set it to zero. (Windows does provide a | |
1364 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1365 | case. While there is no guarantee that a system that provides | |
1366 | meaningful inode numbers will never set st_ino to zero, this is | |
1367 | merely an optimization, so we do not need to worry about false | |
1368 | negatives. */ | |
1369 | ||
1370 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1371 | && abfd_stat.st_ino != 0 |
1372 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1373 | { |
904578ed JK |
1374 | if (abfd_stat.st_dev == parent_stat.st_dev |
1375 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1376 | { | |
cbb099e8 | 1377 | gdb_bfd_unref (abfd); |
904578ed JK |
1378 | return 0; |
1379 | } | |
1380 | verified_as_different = 1; | |
32a0e547 | 1381 | } |
904578ed JK |
1382 | else |
1383 | verified_as_different = 0; | |
32a0e547 | 1384 | |
904578ed | 1385 | file_crc_p = get_file_crc (abfd, &file_crc); |
5b5d99cf | 1386 | |
cbb099e8 | 1387 | gdb_bfd_unref (abfd); |
5b5d99cf | 1388 | |
904578ed JK |
1389 | if (!file_crc_p) |
1390 | return 0; | |
1391 | ||
287ccc17 JK |
1392 | if (crc != file_crc) |
1393 | { | |
904578ed JK |
1394 | /* If one (or both) the files are accessed for example the via "remote:" |
1395 | gdbserver way it does not support the bfd_stat operation. Verify | |
1396 | whether those two files are not the same manually. */ | |
1397 | ||
1398 | if (!verified_as_different && !parent_objfile->crc32_p) | |
1399 | { | |
1400 | parent_objfile->crc32_p = get_file_crc (parent_objfile->obfd, | |
1401 | &parent_objfile->crc32); | |
1402 | if (!parent_objfile->crc32_p) | |
1403 | return 0; | |
1404 | } | |
1405 | ||
0e8aefe7 | 1406 | if (verified_as_different || parent_objfile->crc32 != file_crc) |
904578ed JK |
1407 | warning (_("the debug information found in \"%s\"" |
1408 | " does not match \"%s\" (CRC mismatch).\n"), | |
1409 | name, parent_objfile->name); | |
1410 | ||
287ccc17 JK |
1411 | return 0; |
1412 | } | |
1413 | ||
1414 | return 1; | |
5b5d99cf JB |
1415 | } |
1416 | ||
aa28a74e | 1417 | char *debug_file_directory = NULL; |
920d2a44 AC |
1418 | static void |
1419 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1420 | struct cmd_list_element *c, const char *value) | |
1421 | { | |
3e43a32a MS |
1422 | fprintf_filtered (file, |
1423 | _("The directory where separate debug " | |
1424 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1425 | value); |
1426 | } | |
5b5d99cf JB |
1427 | |
1428 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1429 | #define DEBUG_SUBDIRECTORY ".debug" | |
1430 | #endif | |
1431 | ||
1db33378 PP |
1432 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1433 | where the original file resides (may not be the same as | |
1434 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
1435 | looking for. Returns the name of the debuginfo, of NULL. */ | |
1436 | ||
1437 | static char * | |
1438 | find_separate_debug_file (const char *dir, | |
1439 | const char *canon_dir, | |
1440 | const char *debuglink, | |
1441 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1442 | { |
1db33378 PP |
1443 | char *debugdir; |
1444 | char *debugfile; | |
9cce227f | 1445 | int i; |
e4ab2fad JK |
1446 | VEC (char_ptr) *debugdir_vec; |
1447 | struct cleanup *back_to; | |
1448 | int ix; | |
5b5d99cf | 1449 | |
1db33378 | 1450 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1451 | i = strlen (dir); |
1db33378 PP |
1452 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1453 | i = strlen (canon_dir); | |
1ffa32ee | 1454 | |
25522fae JK |
1455 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1456 | + i | |
1457 | + strlen (DEBUG_SUBDIRECTORY) | |
1458 | + strlen ("/") | |
1db33378 | 1459 | + strlen (debuglink) |
25522fae | 1460 | + 1); |
5b5d99cf JB |
1461 | |
1462 | /* First try in the same directory as the original file. */ | |
1463 | strcpy (debugfile, dir); | |
1db33378 | 1464 | strcat (debugfile, debuglink); |
5b5d99cf | 1465 | |
32a0e547 | 1466 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1467 | return debugfile; |
5417f6dc | 1468 | |
5b5d99cf JB |
1469 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1470 | strcpy (debugfile, dir); | |
1471 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1472 | strcat (debugfile, "/"); | |
1db33378 | 1473 | strcat (debugfile, debuglink); |
5b5d99cf | 1474 | |
32a0e547 | 1475 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1476 | return debugfile; |
5417f6dc | 1477 | |
24ddea62 | 1478 | /* Then try in the global debugfile directories. |
f888f159 | 1479 | |
24ddea62 JK |
1480 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1481 | cause "/..." lookups. */ | |
5417f6dc | 1482 | |
e4ab2fad JK |
1483 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1484 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1485 | |
e4ab2fad JK |
1486 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1487 | { | |
1488 | strcpy (debugfile, debugdir); | |
aa28a74e | 1489 | strcat (debugfile, "/"); |
24ddea62 | 1490 | strcat (debugfile, dir); |
1db33378 | 1491 | strcat (debugfile, debuglink); |
aa28a74e | 1492 | |
32a0e547 | 1493 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1494 | return debugfile; |
24ddea62 JK |
1495 | |
1496 | /* If the file is in the sysroot, try using its base path in the | |
1497 | global debugfile directory. */ | |
1db33378 PP |
1498 | if (canon_dir != NULL |
1499 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1500 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1501 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1502 | { |
e4ab2fad | 1503 | strcpy (debugfile, debugdir); |
1db33378 | 1504 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1505 | strcat (debugfile, "/"); |
1db33378 | 1506 | strcat (debugfile, debuglink); |
24ddea62 | 1507 | |
32a0e547 | 1508 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1509 | return debugfile; |
24ddea62 | 1510 | } |
aa28a74e | 1511 | } |
f888f159 | 1512 | |
e4ab2fad | 1513 | do_cleanups (back_to); |
25522fae | 1514 | xfree (debugfile); |
1db33378 PP |
1515 | return NULL; |
1516 | } | |
1517 | ||
1518 | /* Modify PATH to contain only "directory/" part of PATH. | |
1519 | If there were no directory separators in PATH, PATH will be empty | |
1520 | string on return. */ | |
1521 | ||
1522 | static void | |
1523 | terminate_after_last_dir_separator (char *path) | |
1524 | { | |
1525 | int i; | |
1526 | ||
1527 | /* Strip off the final filename part, leaving the directory name, | |
1528 | followed by a slash. The directory can be relative or absolute. */ | |
1529 | for (i = strlen(path) - 1; i >= 0; i--) | |
1530 | if (IS_DIR_SEPARATOR (path[i])) | |
1531 | break; | |
1532 | ||
1533 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1534 | path[i + 1] = '\0'; | |
1535 | } | |
1536 | ||
1537 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1538 | Returns pathname, or NULL. */ | |
1539 | ||
1540 | char * | |
1541 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1542 | { | |
1543 | char *debuglink; | |
1544 | char *dir, *canon_dir; | |
1545 | char *debugfile; | |
1546 | unsigned long crc32; | |
1547 | struct cleanup *cleanups; | |
1548 | ||
1549 | debuglink = get_debug_link_info (objfile, &crc32); | |
1550 | ||
1551 | if (debuglink == NULL) | |
1552 | { | |
1553 | /* There's no separate debug info, hence there's no way we could | |
1554 | load it => no warning. */ | |
1555 | return NULL; | |
1556 | } | |
1557 | ||
71bdabee | 1558 | cleanups = make_cleanup (xfree, debuglink); |
1db33378 | 1559 | dir = xstrdup (objfile->name); |
71bdabee | 1560 | make_cleanup (xfree, dir); |
1db33378 PP |
1561 | terminate_after_last_dir_separator (dir); |
1562 | canon_dir = lrealpath (dir); | |
1563 | ||
1564 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1565 | crc32, objfile); | |
1566 | xfree (canon_dir); | |
1567 | ||
1568 | if (debugfile == NULL) | |
1569 | { | |
1570 | #ifdef HAVE_LSTAT | |
1571 | /* For PR gdb/9538, try again with realpath (if different from the | |
1572 | original). */ | |
1573 | ||
1574 | struct stat st_buf; | |
1575 | ||
1576 | if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode)) | |
1577 | { | |
1578 | char *symlink_dir; | |
1579 | ||
1580 | symlink_dir = lrealpath (objfile->name); | |
1581 | if (symlink_dir != NULL) | |
1582 | { | |
1583 | make_cleanup (xfree, symlink_dir); | |
1584 | terminate_after_last_dir_separator (symlink_dir); | |
1585 | if (strcmp (dir, symlink_dir) != 0) | |
1586 | { | |
1587 | /* Different directory, so try using it. */ | |
1588 | debugfile = find_separate_debug_file (symlink_dir, | |
1589 | symlink_dir, | |
1590 | debuglink, | |
1591 | crc32, | |
1592 | objfile); | |
1593 | } | |
1594 | } | |
1595 | } | |
1596 | #endif /* HAVE_LSTAT */ | |
1597 | } | |
aa28a74e | 1598 | |
1db33378 | 1599 | do_cleanups (cleanups); |
25522fae | 1600 | return debugfile; |
5b5d99cf JB |
1601 | } |
1602 | ||
1603 | ||
c906108c SS |
1604 | /* This is the symbol-file command. Read the file, analyze its |
1605 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1606 | the command is rather bizarre: |
1607 | ||
1608 | 1. The function buildargv implements various quoting conventions | |
1609 | which are undocumented and have little or nothing in common with | |
1610 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1611 | ||
1612 | 2. Options are used, which are not generally used in GDB (perhaps | |
1613 | "set mapped on", "set readnow on" would be better) | |
1614 | ||
1615 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1616 | conventions (because it is confusing and inconvenient). */ |
1617 | ||
1618 | void | |
fba45db2 | 1619 | symbol_file_command (char *args, int from_tty) |
c906108c | 1620 | { |
c906108c SS |
1621 | dont_repeat (); |
1622 | ||
1623 | if (args == NULL) | |
1624 | { | |
1adeb98a | 1625 | symbol_file_clear (from_tty); |
c906108c SS |
1626 | } |
1627 | else | |
1628 | { | |
d1a41061 | 1629 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1630 | int flags = OBJF_USERLOADED; |
1631 | struct cleanup *cleanups; | |
1632 | char *name = NULL; | |
1633 | ||
7a292a7a | 1634 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1635 | while (*argv != NULL) |
1636 | { | |
78a4a9b9 AC |
1637 | if (strcmp (*argv, "-readnow") == 0) |
1638 | flags |= OBJF_READNOW; | |
1639 | else if (**argv == '-') | |
8a3fe4f8 | 1640 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1641 | else |
1642 | { | |
cb2f3a29 | 1643 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1644 | name = *argv; |
78a4a9b9 | 1645 | } |
cb2f3a29 | 1646 | |
c906108c SS |
1647 | argv++; |
1648 | } | |
1649 | ||
1650 | if (name == NULL) | |
cb2f3a29 MK |
1651 | error (_("no symbol file name was specified")); |
1652 | ||
c906108c SS |
1653 | do_cleanups (cleanups); |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /* Set the initial language. | |
1658 | ||
cb2f3a29 MK |
1659 | FIXME: A better solution would be to record the language in the |
1660 | psymtab when reading partial symbols, and then use it (if known) to | |
1661 | set the language. This would be a win for formats that encode the | |
1662 | language in an easily discoverable place, such as DWARF. For | |
1663 | stabs, we can jump through hoops looking for specially named | |
1664 | symbols or try to intuit the language from the specific type of | |
1665 | stabs we find, but we can't do that until later when we read in | |
1666 | full symbols. */ | |
c906108c | 1667 | |
8b60591b | 1668 | void |
fba45db2 | 1669 | set_initial_language (void) |
c906108c | 1670 | { |
c5aa993b | 1671 | enum language lang = language_unknown; |
c906108c | 1672 | |
01f8c46d JK |
1673 | if (language_of_main != language_unknown) |
1674 | lang = language_of_main; | |
1675 | else | |
1676 | { | |
1677 | const char *filename; | |
f888f159 | 1678 | |
01f8c46d JK |
1679 | filename = find_main_filename (); |
1680 | if (filename != NULL) | |
1681 | lang = deduce_language_from_filename (filename); | |
1682 | } | |
cb2f3a29 | 1683 | |
ccefe4c4 TT |
1684 | if (lang == language_unknown) |
1685 | { | |
1686 | /* Make C the default language */ | |
1687 | lang = language_c; | |
c906108c | 1688 | } |
ccefe4c4 TT |
1689 | |
1690 | set_language (lang); | |
1691 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1692 | } |
1693 | ||
874f5765 | 1694 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1695 | open it normally. Returns a new reference to the BFD. On error, |
1696 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1697 | |
1698 | bfd * | |
08d2cd74 | 1699 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1700 | { |
520b0001 TT |
1701 | bfd *result; |
1702 | ||
874f5765 | 1703 | if (remote_filename_p (name)) |
520b0001 | 1704 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1705 | else |
64c31149 | 1706 | result = gdb_bfd_openr (name, gnutarget); |
520b0001 | 1707 | |
520b0001 | 1708 | return result; |
874f5765 TG |
1709 | } |
1710 | ||
1711 | ||
cb2f3a29 MK |
1712 | /* Open the file specified by NAME and hand it off to BFD for |
1713 | preliminary analysis. Return a newly initialized bfd *, which | |
1714 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1715 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1716 | |
1717 | bfd * | |
fba45db2 | 1718 | symfile_bfd_open (char *name) |
c906108c SS |
1719 | { |
1720 | bfd *sym_bfd; | |
1721 | int desc; | |
1722 | char *absolute_name; | |
1723 | ||
f1838a98 UW |
1724 | if (remote_filename_p (name)) |
1725 | { | |
520b0001 | 1726 | sym_bfd = remote_bfd_open (name, gnutarget); |
f1838a98 | 1727 | if (!sym_bfd) |
a4453b7e TT |
1728 | error (_("`%s': can't open to read symbols: %s."), name, |
1729 | bfd_errmsg (bfd_get_error ())); | |
f1838a98 UW |
1730 | |
1731 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1732 | { | |
f9a062ff | 1733 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 UW |
1734 | error (_("`%s': can't read symbols: %s."), name, |
1735 | bfd_errmsg (bfd_get_error ())); | |
1736 | } | |
1737 | ||
1738 | return sym_bfd; | |
1739 | } | |
1740 | ||
cb2f3a29 | 1741 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1742 | |
1743 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1744 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1745 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1746 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1747 | if (desc < 0) |
1748 | { | |
1749 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1750 | |
c906108c | 1751 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1752 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1753 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1754 | } |
1755 | #endif | |
1756 | if (desc < 0) | |
1757 | { | |
b8c9b27d | 1758 | make_cleanup (xfree, name); |
c906108c SS |
1759 | perror_with_name (name); |
1760 | } | |
cb2f3a29 | 1761 | |
cb2f3a29 MK |
1762 | xfree (name); |
1763 | name = absolute_name; | |
a4453b7e | 1764 | make_cleanup (xfree, name); |
c906108c | 1765 | |
64c31149 | 1766 | sym_bfd = gdb_bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1767 | if (!sym_bfd) |
1768 | { | |
b8c9b27d | 1769 | make_cleanup (xfree, name); |
f1838a98 | 1770 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1771 | bfd_errmsg (bfd_get_error ())); |
1772 | } | |
549c1eea | 1773 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1774 | |
1775 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1776 | { | |
f9a062ff | 1777 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1778 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1779 | bfd_errmsg (bfd_get_error ())); |
1780 | } | |
cb2f3a29 MK |
1781 | |
1782 | return sym_bfd; | |
c906108c SS |
1783 | } |
1784 | ||
cb2f3a29 MK |
1785 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1786 | the section was not found. */ | |
1787 | ||
0e931cf0 JB |
1788 | int |
1789 | get_section_index (struct objfile *objfile, char *section_name) | |
1790 | { | |
1791 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1792 | |
0e931cf0 JB |
1793 | if (sect) |
1794 | return sect->index; | |
1795 | else | |
1796 | return -1; | |
1797 | } | |
1798 | ||
cb2f3a29 MK |
1799 | /* Link SF into the global symtab_fns list. Called on startup by the |
1800 | _initialize routine in each object file format reader, to register | |
b021a221 | 1801 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1802 | |
1803 | void | |
00b5771c | 1804 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1805 | { |
00b5771c | 1806 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1807 | } |
1808 | ||
cb2f3a29 MK |
1809 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1810 | either returns or calls error(). The result is an initialized | |
1811 | struct sym_fns in the objfile structure, that contains cached | |
1812 | information about the symbol file. */ | |
c906108c | 1813 | |
00b5771c | 1814 | static const struct sym_fns * |
31d99776 | 1815 | find_sym_fns (bfd *abfd) |
c906108c | 1816 | { |
00b5771c | 1817 | const struct sym_fns *sf; |
31d99776 | 1818 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1819 | int i; |
c906108c | 1820 | |
75245b24 MS |
1821 | if (our_flavour == bfd_target_srec_flavour |
1822 | || our_flavour == bfd_target_ihex_flavour | |
1823 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1824 | return NULL; /* No symbols. */ |
75245b24 | 1825 | |
00b5771c | 1826 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1827 | if (our_flavour == sf->sym_flavour) |
1828 | return sf; | |
cb2f3a29 | 1829 | |
8a3fe4f8 | 1830 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1831 | bfd_get_target (abfd)); |
c906108c SS |
1832 | } |
1833 | \f | |
cb2f3a29 | 1834 | |
c906108c SS |
1835 | /* This function runs the load command of our current target. */ |
1836 | ||
1837 | static void | |
fba45db2 | 1838 | load_command (char *arg, int from_tty) |
c906108c | 1839 | { |
e5cc9f32 JB |
1840 | dont_repeat (); |
1841 | ||
4487aabf PA |
1842 | /* The user might be reloading because the binary has changed. Take |
1843 | this opportunity to check. */ | |
1844 | reopen_exec_file (); | |
1845 | reread_symbols (); | |
1846 | ||
c906108c | 1847 | if (arg == NULL) |
1986bccd AS |
1848 | { |
1849 | char *parg; | |
1850 | int count = 0; | |
1851 | ||
1852 | parg = arg = get_exec_file (1); | |
1853 | ||
1854 | /* Count how many \ " ' tab space there are in the name. */ | |
1855 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1856 | { | |
1857 | parg++; | |
1858 | count++; | |
1859 | } | |
1860 | ||
1861 | if (count) | |
1862 | { | |
1863 | /* We need to quote this string so buildargv can pull it apart. */ | |
1864 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1865 | char *ptemp = temp; | |
1866 | char *prev; | |
1867 | ||
1868 | make_cleanup (xfree, temp); | |
1869 | ||
1870 | prev = parg = arg; | |
1871 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1872 | { | |
1873 | strncpy (ptemp, prev, parg - prev); | |
1874 | ptemp += parg - prev; | |
1875 | prev = parg++; | |
1876 | *ptemp++ = '\\'; | |
1877 | } | |
1878 | strcpy (ptemp, prev); | |
1879 | ||
1880 | arg = temp; | |
1881 | } | |
1882 | } | |
1883 | ||
c906108c | 1884 | target_load (arg, from_tty); |
2889e661 JB |
1885 | |
1886 | /* After re-loading the executable, we don't really know which | |
1887 | overlays are mapped any more. */ | |
1888 | overlay_cache_invalid = 1; | |
c906108c SS |
1889 | } |
1890 | ||
1891 | /* This version of "load" should be usable for any target. Currently | |
1892 | it is just used for remote targets, not inftarg.c or core files, | |
1893 | on the theory that only in that case is it useful. | |
1894 | ||
1895 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1896 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1897 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1898 | performance compares. */ | |
917317f4 | 1899 | |
917317f4 JM |
1900 | static int validate_download = 0; |
1901 | ||
e4f9b4d5 MS |
1902 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1903 | ||
1904 | static void | |
1905 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1906 | { | |
1907 | bfd_size_type *sum = data; | |
1908 | ||
2c500098 | 1909 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1910 | } |
1911 | ||
1912 | /* Opaque data for load_section_callback. */ | |
1913 | struct load_section_data { | |
1914 | unsigned long load_offset; | |
a76d924d DJ |
1915 | struct load_progress_data *progress_data; |
1916 | VEC(memory_write_request_s) *requests; | |
1917 | }; | |
1918 | ||
1919 | /* Opaque data for load_progress. */ | |
1920 | struct load_progress_data { | |
1921 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1922 | unsigned long write_count; |
1923 | unsigned long data_count; | |
1924 | bfd_size_type total_size; | |
a76d924d DJ |
1925 | }; |
1926 | ||
1927 | /* Opaque data for load_progress for a single section. */ | |
1928 | struct load_progress_section_data { | |
1929 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1930 | |
a76d924d | 1931 | /* Per-section data. */ |
cf7a04e8 DJ |
1932 | const char *section_name; |
1933 | ULONGEST section_sent; | |
1934 | ULONGEST section_size; | |
1935 | CORE_ADDR lma; | |
1936 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1937 | }; |
1938 | ||
a76d924d | 1939 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1940 | |
1941 | static void | |
1942 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1943 | { | |
a76d924d DJ |
1944 | struct load_progress_section_data *args = untyped_arg; |
1945 | struct load_progress_data *totals; | |
1946 | ||
1947 | if (args == NULL) | |
1948 | /* Writing padding data. No easy way to get at the cumulative | |
1949 | stats, so just ignore this. */ | |
1950 | return; | |
1951 | ||
1952 | totals = args->cumulative; | |
1953 | ||
1954 | if (bytes == 0 && args->section_sent == 0) | |
1955 | { | |
1956 | /* The write is just starting. Let the user know we've started | |
1957 | this section. */ | |
79a45e25 | 1958 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 UW |
1959 | args->section_name, hex_string (args->section_size), |
1960 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1961 | return; |
1962 | } | |
cf7a04e8 DJ |
1963 | |
1964 | if (validate_download) | |
1965 | { | |
1966 | /* Broken memories and broken monitors manifest themselves here | |
1967 | when bring new computers to life. This doubles already slow | |
1968 | downloads. */ | |
1969 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1970 | might add a verify_memory() method to the target vector and | |
1971 | then use that. remote.c could implement that method using | |
1972 | the ``qCRC'' packet. */ | |
1973 | gdb_byte *check = xmalloc (bytes); | |
1974 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1975 | ||
1976 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1977 | error (_("Download verify read failed at %s"), |
1978 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1979 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1980 | error (_("Download verify compare failed at %s"), |
1981 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1982 | do_cleanups (verify_cleanups); |
1983 | } | |
a76d924d | 1984 | totals->data_count += bytes; |
cf7a04e8 DJ |
1985 | args->lma += bytes; |
1986 | args->buffer += bytes; | |
a76d924d | 1987 | totals->write_count += 1; |
cf7a04e8 DJ |
1988 | args->section_sent += bytes; |
1989 | if (quit_flag | |
1990 | || (deprecated_ui_load_progress_hook != NULL | |
1991 | && deprecated_ui_load_progress_hook (args->section_name, | |
1992 | args->section_sent))) | |
1993 | error (_("Canceled the download")); | |
1994 | ||
1995 | if (deprecated_show_load_progress != NULL) | |
1996 | deprecated_show_load_progress (args->section_name, | |
1997 | args->section_sent, | |
1998 | args->section_size, | |
a76d924d DJ |
1999 | totals->data_count, |
2000 | totals->total_size); | |
cf7a04e8 DJ |
2001 | } |
2002 | ||
e4f9b4d5 MS |
2003 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2004 | ||
2005 | static void | |
2006 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2007 | { | |
a76d924d | 2008 | struct memory_write_request *new_request; |
e4f9b4d5 | 2009 | struct load_section_data *args = data; |
a76d924d | 2010 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
2011 | bfd_size_type size = bfd_get_section_size (asec); |
2012 | gdb_byte *buffer; | |
cf7a04e8 | 2013 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2014 | |
cf7a04e8 DJ |
2015 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2016 | return; | |
e4f9b4d5 | 2017 | |
cf7a04e8 DJ |
2018 | if (size == 0) |
2019 | return; | |
e4f9b4d5 | 2020 | |
a76d924d DJ |
2021 | new_request = VEC_safe_push (memory_write_request_s, |
2022 | args->requests, NULL); | |
2023 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
2024 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
2025 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
2026 | new_request->end = new_request->begin + size; /* FIXME Should size |
2027 | be in instead? */ | |
a76d924d DJ |
2028 | new_request->data = xmalloc (size); |
2029 | new_request->baton = section_data; | |
cf7a04e8 | 2030 | |
a76d924d | 2031 | buffer = new_request->data; |
cf7a04e8 | 2032 | |
a76d924d DJ |
2033 | section_data->cumulative = args->progress_data; |
2034 | section_data->section_name = sect_name; | |
2035 | section_data->section_size = size; | |
2036 | section_data->lma = new_request->begin; | |
2037 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2038 | |
2039 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2040 | } |
2041 | ||
2042 | /* Clean up an entire memory request vector, including load | |
2043 | data and progress records. */ | |
cf7a04e8 | 2044 | |
a76d924d DJ |
2045 | static void |
2046 | clear_memory_write_data (void *arg) | |
2047 | { | |
2048 | VEC(memory_write_request_s) **vec_p = arg; | |
2049 | VEC(memory_write_request_s) *vec = *vec_p; | |
2050 | int i; | |
2051 | struct memory_write_request *mr; | |
cf7a04e8 | 2052 | |
a76d924d DJ |
2053 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2054 | { | |
2055 | xfree (mr->data); | |
2056 | xfree (mr->baton); | |
2057 | } | |
2058 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2059 | } |
2060 | ||
c906108c | 2061 | void |
917317f4 | 2062 | generic_load (char *args, int from_tty) |
c906108c | 2063 | { |
c906108c | 2064 | bfd *loadfile_bfd; |
2b71414d | 2065 | struct timeval start_time, end_time; |
917317f4 | 2066 | char *filename; |
1986bccd | 2067 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2068 | struct load_section_data cbdata; |
a76d924d | 2069 | struct load_progress_data total_progress; |
79a45e25 | 2070 | struct ui_out *uiout = current_uiout; |
a76d924d | 2071 | |
e4f9b4d5 | 2072 | CORE_ADDR entry; |
1986bccd | 2073 | char **argv; |
e4f9b4d5 | 2074 | |
a76d924d DJ |
2075 | memset (&cbdata, 0, sizeof (cbdata)); |
2076 | memset (&total_progress, 0, sizeof (total_progress)); | |
2077 | cbdata.progress_data = &total_progress; | |
2078 | ||
2079 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2080 | |
d1a41061 PP |
2081 | if (args == NULL) |
2082 | error_no_arg (_("file to load")); | |
1986bccd | 2083 | |
d1a41061 | 2084 | argv = gdb_buildargv (args); |
1986bccd AS |
2085 | make_cleanup_freeargv (argv); |
2086 | ||
2087 | filename = tilde_expand (argv[0]); | |
2088 | make_cleanup (xfree, filename); | |
2089 | ||
2090 | if (argv[1] != NULL) | |
917317f4 JM |
2091 | { |
2092 | char *endptr; | |
ba5f2f8a | 2093 | |
1986bccd AS |
2094 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
2095 | ||
2096 | /* If the last word was not a valid number then | |
2097 | treat it as a file name with spaces in. */ | |
2098 | if (argv[1] == endptr) | |
2099 | error (_("Invalid download offset:%s."), argv[1]); | |
2100 | ||
2101 | if (argv[2] != NULL) | |
2102 | error (_("Too many parameters.")); | |
917317f4 | 2103 | } |
c906108c | 2104 | |
c378eb4e | 2105 | /* Open the file for loading. */ |
64c31149 | 2106 | loadfile_bfd = gdb_bfd_openr (filename, gnutarget); |
c906108c SS |
2107 | if (loadfile_bfd == NULL) |
2108 | { | |
2109 | perror_with_name (filename); | |
2110 | return; | |
2111 | } | |
917317f4 | 2112 | |
f9a062ff | 2113 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2114 | |
c5aa993b | 2115 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2116 | { |
8a3fe4f8 | 2117 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2118 | bfd_errmsg (bfd_get_error ())); |
2119 | } | |
c5aa993b | 2120 | |
5417f6dc | 2121 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2122 | (void *) &total_progress.total_size); |
2123 | ||
2124 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2125 | |
2b71414d | 2126 | gettimeofday (&start_time, NULL); |
c906108c | 2127 | |
a76d924d DJ |
2128 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2129 | load_progress) != 0) | |
2130 | error (_("Load failed")); | |
c906108c | 2131 | |
2b71414d | 2132 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2133 | |
e4f9b4d5 | 2134 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2135 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2136 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2137 | ui_out_text (uiout, ", load size "); |
a76d924d | 2138 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2139 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2140 | /* We were doing this in remote-mips.c, I suspect it is right |
2141 | for other targets too. */ | |
fb14de7b | 2142 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2143 | |
38963c97 DJ |
2144 | /* Reset breakpoints, now that we have changed the load image. For |
2145 | instance, breakpoints may have been set (or reset, by | |
2146 | post_create_inferior) while connected to the target but before we | |
2147 | loaded the program. In that case, the prologue analyzer could | |
2148 | have read instructions from the target to find the right | |
2149 | breakpoint locations. Loading has changed the contents of that | |
2150 | memory. */ | |
2151 | ||
2152 | breakpoint_re_set (); | |
2153 | ||
7ca9f392 AC |
2154 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2155 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2156 | was commented out), making the call confuses GDB if more than one | |
2157 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2158 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2159 | |
a76d924d DJ |
2160 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2161 | total_progress.write_count, | |
2162 | &start_time, &end_time); | |
c906108c SS |
2163 | |
2164 | do_cleanups (old_cleanups); | |
2165 | } | |
2166 | ||
c378eb4e | 2167 | /* Report how fast the transfer went. */ |
c906108c | 2168 | |
917317f4 JM |
2169 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2170 | replaced by print_transfer_performance (with a very different | |
c378eb4e | 2171 | function signature). */ |
917317f4 | 2172 | |
c906108c | 2173 | void |
fba45db2 KB |
2174 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2175 | time_t end_time) | |
c906108c | 2176 | { |
2b71414d DJ |
2177 | struct timeval start, end; |
2178 | ||
2179 | start.tv_sec = start_time; | |
2180 | start.tv_usec = 0; | |
2181 | end.tv_sec = end_time; | |
2182 | end.tv_usec = 0; | |
2183 | ||
2184 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2185 | } |
2186 | ||
2187 | void | |
d9fcf2fb | 2188 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2189 | unsigned long data_count, |
2190 | unsigned long write_count, | |
2b71414d DJ |
2191 | const struct timeval *start_time, |
2192 | const struct timeval *end_time) | |
917317f4 | 2193 | { |
9f43d28c | 2194 | ULONGEST time_count; |
79a45e25 | 2195 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2196 | |
2197 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2198 | accuracy and overflow. */ | |
2199 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2200 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2201 | ||
8b93c638 JM |
2202 | ui_out_text (uiout, "Transfer rate: "); |
2203 | if (time_count > 0) | |
2204 | { | |
9f43d28c DJ |
2205 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2206 | ||
2207 | if (ui_out_is_mi_like_p (uiout)) | |
2208 | { | |
2209 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2210 | ui_out_text (uiout, " bits/sec"); | |
2211 | } | |
2212 | else if (rate < 1024) | |
2213 | { | |
2214 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2215 | ui_out_text (uiout, " bytes/sec"); | |
2216 | } | |
2217 | else | |
2218 | { | |
2219 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2220 | ui_out_text (uiout, " KB/sec"); | |
2221 | } | |
8b93c638 JM |
2222 | } |
2223 | else | |
2224 | { | |
ba5f2f8a | 2225 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2226 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2227 | } |
2228 | if (write_count > 0) | |
2229 | { | |
2230 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2231 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2232 | ui_out_text (uiout, " bytes/write"); |
2233 | } | |
2234 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2235 | } |
2236 | ||
2237 | /* This function allows the addition of incrementally linked object files. | |
2238 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2239 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2240 | special case syntax for the rombug target (Rombug is the boot | |
2241 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2242 | rombug case, the user doesn't need to supply a text address, | |
2243 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2244 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2245 | |
c906108c | 2246 | static void |
fba45db2 | 2247 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2248 | { |
5af949e3 | 2249 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2250 | char *filename = NULL; |
2df3850c | 2251 | int flags = OBJF_USERLOADED; |
c906108c | 2252 | char *arg; |
db162d44 | 2253 | int section_index = 0; |
2acceee2 JM |
2254 | int argcnt = 0; |
2255 | int sec_num = 0; | |
2256 | int i; | |
db162d44 EZ |
2257 | int expecting_sec_name = 0; |
2258 | int expecting_sec_addr = 0; | |
5b96932b | 2259 | char **argv; |
db162d44 | 2260 | |
a39a16c4 | 2261 | struct sect_opt |
2acceee2 | 2262 | { |
2acceee2 JM |
2263 | char *name; |
2264 | char *value; | |
a39a16c4 | 2265 | }; |
db162d44 | 2266 | |
a39a16c4 MM |
2267 | struct section_addr_info *section_addrs; |
2268 | struct sect_opt *sect_opts = NULL; | |
2269 | size_t num_sect_opts = 0; | |
3017564a | 2270 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2271 | |
a39a16c4 | 2272 | num_sect_opts = 16; |
5417f6dc | 2273 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2274 | * sizeof (struct sect_opt)); |
2275 | ||
c906108c SS |
2276 | dont_repeat (); |
2277 | ||
2278 | if (args == NULL) | |
8a3fe4f8 | 2279 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2280 | |
d1a41061 | 2281 | argv = gdb_buildargv (args); |
5b96932b | 2282 | make_cleanup_freeargv (argv); |
db162d44 | 2283 | |
5b96932b AS |
2284 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2285 | { | |
c378eb4e | 2286 | /* Process the argument. */ |
db162d44 | 2287 | if (argcnt == 0) |
c906108c | 2288 | { |
c378eb4e | 2289 | /* The first argument is the file name. */ |
db162d44 | 2290 | filename = tilde_expand (arg); |
3017564a | 2291 | make_cleanup (xfree, filename); |
c906108c | 2292 | } |
db162d44 | 2293 | else |
7a78ae4e ND |
2294 | if (argcnt == 1) |
2295 | { | |
2296 | /* The second argument is always the text address at which | |
c378eb4e | 2297 | to load the program. */ |
7a78ae4e ND |
2298 | sect_opts[section_index].name = ".text"; |
2299 | sect_opts[section_index].value = arg; | |
f414f22f | 2300 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2301 | { |
2302 | num_sect_opts *= 2; | |
5417f6dc | 2303 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2304 | xrealloc (sect_opts, |
5417f6dc | 2305 | num_sect_opts |
a39a16c4 MM |
2306 | * sizeof (struct sect_opt))); |
2307 | } | |
7a78ae4e ND |
2308 | } |
2309 | else | |
2310 | { | |
2311 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2312 | to an option. */ |
7a78ae4e ND |
2313 | |
2314 | if (*arg == '-') | |
2315 | { | |
78a4a9b9 AC |
2316 | if (strcmp (arg, "-readnow") == 0) |
2317 | flags |= OBJF_READNOW; | |
2318 | else if (strcmp (arg, "-s") == 0) | |
2319 | { | |
2320 | expecting_sec_name = 1; | |
2321 | expecting_sec_addr = 1; | |
2322 | } | |
7a78ae4e ND |
2323 | } |
2324 | else | |
2325 | { | |
2326 | if (expecting_sec_name) | |
db162d44 | 2327 | { |
7a78ae4e ND |
2328 | sect_opts[section_index].name = arg; |
2329 | expecting_sec_name = 0; | |
db162d44 EZ |
2330 | } |
2331 | else | |
7a78ae4e ND |
2332 | if (expecting_sec_addr) |
2333 | { | |
2334 | sect_opts[section_index].value = arg; | |
2335 | expecting_sec_addr = 0; | |
f414f22f | 2336 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2337 | { |
2338 | num_sect_opts *= 2; | |
5417f6dc | 2339 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2340 | xrealloc (sect_opts, |
5417f6dc | 2341 | num_sect_opts |
a39a16c4 MM |
2342 | * sizeof (struct sect_opt))); |
2343 | } | |
7a78ae4e ND |
2344 | } |
2345 | else | |
3e43a32a | 2346 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2347 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2348 | } |
2349 | } | |
c906108c | 2350 | } |
c906108c | 2351 | |
927890d0 JB |
2352 | /* This command takes at least two arguments. The first one is a |
2353 | filename, and the second is the address where this file has been | |
2354 | loaded. Abort now if this address hasn't been provided by the | |
2355 | user. */ | |
2356 | if (section_index < 1) | |
2357 | error (_("The address where %s has been loaded is missing"), filename); | |
2358 | ||
c378eb4e | 2359 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2360 | a sect_addr_info structure to be passed around to other |
2361 | functions. We have to split this up into separate print | |
bb599908 | 2362 | statements because hex_string returns a local static |
c378eb4e | 2363 | string. */ |
5417f6dc | 2364 | |
a3f17187 | 2365 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2366 | section_addrs = alloc_section_addr_info (section_index); |
2367 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2368 | for (i = 0; i < section_index; i++) |
c906108c | 2369 | { |
db162d44 EZ |
2370 | CORE_ADDR addr; |
2371 | char *val = sect_opts[i].value; | |
2372 | char *sec = sect_opts[i].name; | |
5417f6dc | 2373 | |
ae822768 | 2374 | addr = parse_and_eval_address (val); |
db162d44 | 2375 | |
db162d44 | 2376 | /* Here we store the section offsets in the order they were |
c378eb4e | 2377 | entered on the command line. */ |
a39a16c4 MM |
2378 | section_addrs->other[sec_num].name = sec; |
2379 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2380 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2381 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2382 | sec_num++; |
2383 | ||
5417f6dc | 2384 | /* The object's sections are initialized when a |
db162d44 | 2385 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2386 | This happens in reread_symbols. |
db162d44 EZ |
2387 | At this point, we don't know what file type this is, |
2388 | so we can't determine what section names are valid. */ | |
2acceee2 | 2389 | } |
db162d44 | 2390 | |
2acceee2 | 2391 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2392 | error (_("Not confirmed.")); |
c906108c | 2393 | |
7eedccfa PP |
2394 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2395 | section_addrs, flags); | |
c906108c SS |
2396 | |
2397 | /* Getting new symbols may change our opinion about what is | |
2398 | frameless. */ | |
2399 | reinit_frame_cache (); | |
db162d44 | 2400 | do_cleanups (my_cleanups); |
c906108c SS |
2401 | } |
2402 | \f | |
70992597 | 2403 | |
4ac39b97 JK |
2404 | typedef struct objfile *objfilep; |
2405 | ||
2406 | DEF_VEC_P (objfilep); | |
2407 | ||
c906108c SS |
2408 | /* Re-read symbols if a symbol-file has changed. */ |
2409 | void | |
fba45db2 | 2410 | reread_symbols (void) |
c906108c SS |
2411 | { |
2412 | struct objfile *objfile; | |
2413 | long new_modtime; | |
c906108c SS |
2414 | struct stat new_statbuf; |
2415 | int res; | |
4ac39b97 JK |
2416 | VEC (objfilep) *new_objfiles = NULL; |
2417 | struct cleanup *all_cleanups; | |
2418 | ||
2419 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2420 | |
2421 | /* With the addition of shared libraries, this should be modified, | |
2422 | the load time should be saved in the partial symbol tables, since | |
2423 | different tables may come from different source files. FIXME. | |
2424 | This routine should then walk down each partial symbol table | |
c378eb4e | 2425 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2426 | |
c5aa993b JM |
2427 | for (objfile = object_files; objfile; objfile = objfile->next) |
2428 | { | |
9cce227f TG |
2429 | /* solib-sunos.c creates one objfile with obfd. */ |
2430 | if (objfile->obfd == NULL) | |
2431 | continue; | |
2432 | ||
2433 | /* Separate debug objfiles are handled in the main objfile. */ | |
2434 | if (objfile->separate_debug_objfile_backlink) | |
2435 | continue; | |
2436 | ||
02aeec7b JB |
2437 | /* If this object is from an archive (what you usually create with |
2438 | `ar', often called a `static library' on most systems, though | |
2439 | a `shared library' on AIX is also an archive), then you should | |
2440 | stat on the archive name, not member name. */ | |
9cce227f TG |
2441 | if (objfile->obfd->my_archive) |
2442 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2443 | else | |
9cce227f TG |
2444 | res = stat (objfile->name, &new_statbuf); |
2445 | if (res != 0) | |
2446 | { | |
c378eb4e | 2447 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2448 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2449 | objfile->name); | |
2450 | continue; | |
2451 | } | |
2452 | new_modtime = new_statbuf.st_mtime; | |
2453 | if (new_modtime != objfile->mtime) | |
2454 | { | |
2455 | struct cleanup *old_cleanups; | |
2456 | struct section_offsets *offsets; | |
2457 | int num_offsets; | |
2458 | char *obfd_filename; | |
2459 | ||
2460 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2461 | objfile->name); | |
2462 | ||
2463 | /* There are various functions like symbol_file_add, | |
2464 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2465 | appear to do what we want. But they have various other | |
2466 | effects which we *don't* want. So we just do stuff | |
2467 | ourselves. We don't worry about mapped files (for one thing, | |
2468 | any mapped file will be out of date). */ | |
2469 | ||
2470 | /* If we get an error, blow away this objfile (not sure if | |
2471 | that is the correct response for things like shared | |
2472 | libraries). */ | |
2473 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2474 | /* We need to do this whenever any symbols go away. */ | |
2475 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2476 | ||
0ba1096a KT |
2477 | if (exec_bfd != NULL |
2478 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2479 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2480 | { |
2481 | /* Reload EXEC_BFD without asking anything. */ | |
2482 | ||
2483 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2484 | } | |
2485 | ||
f6eeced0 JK |
2486 | /* Keep the calls order approx. the same as in free_objfile. */ |
2487 | ||
2488 | /* Free the separate debug objfiles. It will be | |
2489 | automatically recreated by sym_read. */ | |
2490 | free_objfile_separate_debug (objfile); | |
2491 | ||
2492 | /* Remove any references to this objfile in the global | |
2493 | value lists. */ | |
2494 | preserve_values (objfile); | |
2495 | ||
2496 | /* Nuke all the state that we will re-read. Much of the following | |
2497 | code which sets things to NULL really is necessary to tell | |
2498 | other parts of GDB that there is nothing currently there. | |
2499 | ||
2500 | Try to keep the freeing order compatible with free_objfile. */ | |
2501 | ||
2502 | if (objfile->sf != NULL) | |
2503 | { | |
2504 | (*objfile->sf->sym_finish) (objfile); | |
2505 | } | |
2506 | ||
2507 | clear_objfile_data (objfile); | |
2508 | ||
9cce227f TG |
2509 | /* Clean up any state BFD has sitting around. We don't need |
2510 | to close the descriptor but BFD lacks a way of closing the | |
2511 | BFD without closing the descriptor. */ | |
a4453b7e TT |
2512 | { |
2513 | struct bfd *obfd = objfile->obfd; | |
2514 | ||
2515 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2516 | /* Open the new BFD before freeing the old one, so that | |
2517 | the filename remains live. */ | |
08d2cd74 | 2518 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
a4453b7e TT |
2519 | gdb_bfd_unref (obfd); |
2520 | } | |
2521 | ||
9cce227f TG |
2522 | if (objfile->obfd == NULL) |
2523 | error (_("Can't open %s to read symbols."), objfile->name); | |
9cce227f TG |
2524 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2525 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2526 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2527 | bfd_errmsg (bfd_get_error ())); | |
2528 | ||
2529 | /* Save the offsets, we will nuke them with the rest of the | |
2530 | objfile_obstack. */ | |
2531 | num_offsets = objfile->num_sections; | |
2532 | offsets = ((struct section_offsets *) | |
2533 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2534 | memcpy (offsets, objfile->section_offsets, | |
2535 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2536 | ||
9cce227f TG |
2537 | /* FIXME: Do we have to free a whole linked list, or is this |
2538 | enough? */ | |
2539 | if (objfile->global_psymbols.list) | |
2540 | xfree (objfile->global_psymbols.list); | |
2541 | memset (&objfile->global_psymbols, 0, | |
2542 | sizeof (objfile->global_psymbols)); | |
2543 | if (objfile->static_psymbols.list) | |
2544 | xfree (objfile->static_psymbols.list); | |
2545 | memset (&objfile->static_psymbols, 0, | |
2546 | sizeof (objfile->static_psymbols)); | |
2547 | ||
c378eb4e | 2548 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2549 | psymbol_bcache_free (objfile->psymbol_cache); |
2550 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f | 2551 | bcache_xfree (objfile->macro_cache); |
cbd70537 | 2552 | objfile->macro_cache = bcache_xmalloc (NULL, NULL); |
9cce227f | 2553 | bcache_xfree (objfile->filename_cache); |
cbd70537 | 2554 | objfile->filename_cache = bcache_xmalloc (NULL,NULL); |
9cce227f TG |
2555 | if (objfile->demangled_names_hash != NULL) |
2556 | { | |
2557 | htab_delete (objfile->demangled_names_hash); | |
2558 | objfile->demangled_names_hash = NULL; | |
2559 | } | |
2560 | obstack_free (&objfile->objfile_obstack, 0); | |
2561 | objfile->sections = NULL; | |
2562 | objfile->symtabs = NULL; | |
2563 | objfile->psymtabs = NULL; | |
2564 | objfile->psymtabs_addrmap = NULL; | |
2565 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2566 | objfile->template_symbols = NULL; |
9cce227f TG |
2567 | objfile->msymbols = NULL; |
2568 | objfile->deprecated_sym_private = NULL; | |
2569 | objfile->minimal_symbol_count = 0; | |
2570 | memset (&objfile->msymbol_hash, 0, | |
2571 | sizeof (objfile->msymbol_hash)); | |
2572 | memset (&objfile->msymbol_demangled_hash, 0, | |
2573 | sizeof (objfile->msymbol_demangled_hash)); | |
2574 | ||
9cce227f TG |
2575 | /* obstack_init also initializes the obstack so it is |
2576 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2577 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2578 | obstack_init (&objfile->objfile_obstack); |
d82ea6a8 | 2579 | build_objfile_section_table (objfile); |
9cce227f TG |
2580 | terminate_minimal_symbol_table (objfile); |
2581 | ||
2582 | /* We use the same section offsets as from last time. I'm not | |
2583 | sure whether that is always correct for shared libraries. */ | |
2584 | objfile->section_offsets = (struct section_offsets *) | |
2585 | obstack_alloc (&objfile->objfile_obstack, | |
2586 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2587 | memcpy (objfile->section_offsets, offsets, | |
2588 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2589 | objfile->num_sections = num_offsets; | |
2590 | ||
2591 | /* What the hell is sym_new_init for, anyway? The concept of | |
2592 | distinguishing between the main file and additional files | |
2593 | in this way seems rather dubious. */ | |
2594 | if (objfile == symfile_objfile) | |
c906108c | 2595 | { |
9cce227f | 2596 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2597 | } |
9cce227f TG |
2598 | |
2599 | (*objfile->sf->sym_init) (objfile); | |
2600 | clear_complaints (&symfile_complaints, 1, 1); | |
2601 | /* Do not set flags as this is safe and we don't want to be | |
2602 | verbose. */ | |
2603 | (*objfile->sf->sym_read) (objfile, 0); | |
b11896a5 TT |
2604 | if ((objfile->flags & OBJF_PSYMTABS_READ) != 0) |
2605 | { | |
2606 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2607 | require_partial_symbols (objfile, 0); | |
2608 | } | |
2609 | ||
9cce227f | 2610 | if (!objfile_has_symbols (objfile)) |
c906108c | 2611 | { |
9cce227f TG |
2612 | wrap_here (""); |
2613 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2614 | wrap_here (""); | |
c5aa993b | 2615 | } |
9cce227f TG |
2616 | |
2617 | /* We're done reading the symbol file; finish off complaints. */ | |
2618 | clear_complaints (&symfile_complaints, 0, 1); | |
2619 | ||
2620 | /* Getting new symbols may change our opinion about what is | |
2621 | frameless. */ | |
2622 | ||
2623 | reinit_frame_cache (); | |
2624 | ||
2625 | /* Discard cleanups as symbol reading was successful. */ | |
2626 | discard_cleanups (old_cleanups); | |
2627 | ||
2628 | /* If the mtime has changed between the time we set new_modtime | |
2629 | and now, we *want* this to be out of date, so don't call stat | |
2630 | again now. */ | |
2631 | objfile->mtime = new_modtime; | |
9cce227f | 2632 | init_entry_point_info (objfile); |
4ac39b97 JK |
2633 | |
2634 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2635 | } |
2636 | } | |
c906108c | 2637 | |
4ac39b97 | 2638 | if (new_objfiles) |
ea53e89f | 2639 | { |
4ac39b97 JK |
2640 | int ix; |
2641 | ||
ff3536bc UW |
2642 | /* Notify objfiles that we've modified objfile sections. */ |
2643 | objfiles_changed (); | |
2644 | ||
c1e56572 | 2645 | clear_symtab_users (0); |
4ac39b97 JK |
2646 | |
2647 | /* clear_objfile_data for each objfile was called before freeing it and | |
2648 | observer_notify_new_objfile (NULL) has been called by | |
2649 | clear_symtab_users above. Notify the new files now. */ | |
2650 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2651 | observer_notify_new_objfile (objfile); | |
2652 | ||
ea53e89f JB |
2653 | /* At least one objfile has changed, so we can consider that |
2654 | the executable we're debugging has changed too. */ | |
781b42b0 | 2655 | observer_notify_executable_changed (); |
ea53e89f | 2656 | } |
4ac39b97 JK |
2657 | |
2658 | do_cleanups (all_cleanups); | |
c906108c | 2659 | } |
c906108c SS |
2660 | \f |
2661 | ||
c5aa993b JM |
2662 | |
2663 | typedef struct | |
2664 | { | |
2665 | char *ext; | |
c906108c | 2666 | enum language lang; |
c5aa993b JM |
2667 | } |
2668 | filename_language; | |
c906108c | 2669 | |
c5aa993b | 2670 | static filename_language *filename_language_table; |
c906108c SS |
2671 | static int fl_table_size, fl_table_next; |
2672 | ||
2673 | static void | |
fba45db2 | 2674 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2675 | { |
2676 | if (fl_table_next >= fl_table_size) | |
2677 | { | |
2678 | fl_table_size += 10; | |
5417f6dc | 2679 | filename_language_table = |
25bf3106 PM |
2680 | xrealloc (filename_language_table, |
2681 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2682 | } |
2683 | ||
4fcf66da | 2684 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2685 | filename_language_table[fl_table_next].lang = lang; |
2686 | fl_table_next++; | |
2687 | } | |
2688 | ||
2689 | static char *ext_args; | |
920d2a44 AC |
2690 | static void |
2691 | show_ext_args (struct ui_file *file, int from_tty, | |
2692 | struct cmd_list_element *c, const char *value) | |
2693 | { | |
3e43a32a MS |
2694 | fprintf_filtered (file, |
2695 | _("Mapping between filename extension " | |
2696 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2697 | value); |
2698 | } | |
c906108c SS |
2699 | |
2700 | static void | |
26c41df3 | 2701 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2702 | { |
2703 | int i; | |
2704 | char *cp = ext_args; | |
2705 | enum language lang; | |
2706 | ||
c378eb4e | 2707 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2708 | if (*cp != '.') |
8a3fe4f8 | 2709 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2710 | |
2711 | /* Find end of first arg. */ | |
c5aa993b | 2712 | while (*cp && !isspace (*cp)) |
c906108c SS |
2713 | cp++; |
2714 | ||
2715 | if (*cp == '\0') | |
3e43a32a MS |
2716 | error (_("'%s': two arguments required -- " |
2717 | "filename extension and language"), | |
c906108c SS |
2718 | ext_args); |
2719 | ||
c378eb4e | 2720 | /* Null-terminate first arg. */ |
c5aa993b | 2721 | *cp++ = '\0'; |
c906108c SS |
2722 | |
2723 | /* Find beginning of second arg, which should be a source language. */ | |
2724 | while (*cp && isspace (*cp)) | |
2725 | cp++; | |
2726 | ||
2727 | if (*cp == '\0') | |
3e43a32a MS |
2728 | error (_("'%s': two arguments required -- " |
2729 | "filename extension and language"), | |
c906108c SS |
2730 | ext_args); |
2731 | ||
2732 | /* Lookup the language from among those we know. */ | |
2733 | lang = language_enum (cp); | |
2734 | ||
2735 | /* Now lookup the filename extension: do we already know it? */ | |
2736 | for (i = 0; i < fl_table_next; i++) | |
2737 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2738 | break; | |
2739 | ||
2740 | if (i >= fl_table_next) | |
2741 | { | |
c378eb4e | 2742 | /* New file extension. */ |
c906108c SS |
2743 | add_filename_language (ext_args, lang); |
2744 | } | |
2745 | else | |
2746 | { | |
c378eb4e | 2747 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2748 | |
2749 | /* if (from_tty) */ | |
2750 | /* query ("Really make files of type %s '%s'?", */ | |
2751 | /* ext_args, language_str (lang)); */ | |
2752 | ||
b8c9b27d | 2753 | xfree (filename_language_table[i].ext); |
4fcf66da | 2754 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2755 | filename_language_table[i].lang = lang; |
2756 | } | |
2757 | } | |
2758 | ||
2759 | static void | |
fba45db2 | 2760 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2761 | { |
2762 | int i; | |
2763 | ||
a3f17187 | 2764 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2765 | printf_filtered ("\n\n"); |
2766 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2767 | printf_filtered ("\t%s\t- %s\n", |
2768 | filename_language_table[i].ext, | |
c906108c SS |
2769 | language_str (filename_language_table[i].lang)); |
2770 | } | |
2771 | ||
2772 | static void | |
fba45db2 | 2773 | init_filename_language_table (void) |
c906108c | 2774 | { |
c378eb4e | 2775 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2776 | { |
2777 | fl_table_size = 20; | |
2778 | fl_table_next = 0; | |
c5aa993b | 2779 | filename_language_table = |
c906108c | 2780 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2781 | add_filename_language (".c", language_c); |
6aecb9c2 | 2782 | add_filename_language (".d", language_d); |
c5aa993b JM |
2783 | add_filename_language (".C", language_cplus); |
2784 | add_filename_language (".cc", language_cplus); | |
2785 | add_filename_language (".cp", language_cplus); | |
2786 | add_filename_language (".cpp", language_cplus); | |
2787 | add_filename_language (".cxx", language_cplus); | |
2788 | add_filename_language (".c++", language_cplus); | |
2789 | add_filename_language (".java", language_java); | |
c906108c | 2790 | add_filename_language (".class", language_java); |
da2cf7e0 | 2791 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2792 | add_filename_language (".f", language_fortran); |
2793 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2794 | add_filename_language (".for", language_fortran); |
2795 | add_filename_language (".FOR", language_fortran); | |
2796 | add_filename_language (".ftn", language_fortran); | |
2797 | add_filename_language (".FTN", language_fortran); | |
2798 | add_filename_language (".fpp", language_fortran); | |
2799 | add_filename_language (".FPP", language_fortran); | |
2800 | add_filename_language (".f90", language_fortran); | |
2801 | add_filename_language (".F90", language_fortran); | |
2802 | add_filename_language (".f95", language_fortran); | |
2803 | add_filename_language (".F95", language_fortran); | |
2804 | add_filename_language (".f03", language_fortran); | |
2805 | add_filename_language (".F03", language_fortran); | |
2806 | add_filename_language (".f08", language_fortran); | |
2807 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2808 | add_filename_language (".s", language_asm); |
aa707ed0 | 2809 | add_filename_language (".sx", language_asm); |
c5aa993b | 2810 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2811 | add_filename_language (".pas", language_pascal); |
2812 | add_filename_language (".p", language_pascal); | |
2813 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2814 | add_filename_language (".adb", language_ada); |
2815 | add_filename_language (".ads", language_ada); | |
2816 | add_filename_language (".a", language_ada); | |
2817 | add_filename_language (".ada", language_ada); | |
dde59185 | 2818 | add_filename_language (".dg", language_ada); |
c906108c SS |
2819 | } |
2820 | } | |
2821 | ||
2822 | enum language | |
dd786858 | 2823 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2824 | { |
2825 | int i; | |
2826 | char *cp; | |
2827 | ||
2828 | if (filename != NULL) | |
2829 | if ((cp = strrchr (filename, '.')) != NULL) | |
2830 | for (i = 0; i < fl_table_next; i++) | |
2831 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2832 | return filename_language_table[i].lang; | |
2833 | ||
2834 | return language_unknown; | |
2835 | } | |
2836 | \f | |
2837 | /* allocate_symtab: | |
2838 | ||
2839 | Allocate and partly initialize a new symbol table. Return a pointer | |
2840 | to it. error() if no space. | |
2841 | ||
2842 | Caller must set these fields: | |
c5aa993b JM |
2843 | LINETABLE(symtab) |
2844 | symtab->blockvector | |
2845 | symtab->dirname | |
2846 | symtab->free_code | |
2847 | symtab->free_ptr | |
c906108c SS |
2848 | */ |
2849 | ||
2850 | struct symtab * | |
72b9f47f | 2851 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2852 | { |
52f0bd74 | 2853 | struct symtab *symtab; |
c906108c SS |
2854 | |
2855 | symtab = (struct symtab *) | |
4a146b47 | 2856 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2857 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2858 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2859 | objfile->filename_cache); | |
c5aa993b JM |
2860 | symtab->fullname = NULL; |
2861 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2862 | symtab->debugformat = "unknown"; |
c906108c | 2863 | |
c378eb4e | 2864 | /* Hook it to the objfile it comes from. */ |
c906108c | 2865 | |
c5aa993b JM |
2866 | symtab->objfile = objfile; |
2867 | symtab->next = objfile->symtabs; | |
2868 | objfile->symtabs = symtab; | |
c906108c | 2869 | |
45cfd468 DE |
2870 | if (symtab_create_debug) |
2871 | { | |
2872 | /* Be a bit clever with debugging messages, and don't print objfile | |
2873 | every time, only when it changes. */ | |
2874 | static char *last_objfile_name = NULL; | |
2875 | ||
2876 | if (last_objfile_name == NULL | |
2877 | || strcmp (last_objfile_name, objfile->name) != 0) | |
2878 | { | |
2879 | xfree (last_objfile_name); | |
2880 | last_objfile_name = xstrdup (objfile->name); | |
2881 | fprintf_unfiltered (gdb_stdlog, | |
2882 | "Creating one or more symtabs for objfile %s ...\n", | |
2883 | last_objfile_name); | |
2884 | } | |
2885 | fprintf_unfiltered (gdb_stdlog, | |
2886 | "Created symtab 0x%lx for module %s.\n", | |
2887 | (long) symtab, filename); | |
2888 | } | |
2889 | ||
c906108c SS |
2890 | return (symtab); |
2891 | } | |
c906108c | 2892 | \f |
c5aa993b | 2893 | |
c906108c | 2894 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2895 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2896 | |
2897 | void | |
c1e56572 | 2898 | clear_symtab_users (int add_flags) |
c906108c SS |
2899 | { |
2900 | /* Someday, we should do better than this, by only blowing away | |
2901 | the things that really need to be blown. */ | |
c0501be5 DJ |
2902 | |
2903 | /* Clear the "current" symtab first, because it is no longer valid. | |
2904 | breakpoint_re_set may try to access the current symtab. */ | |
2905 | clear_current_source_symtab_and_line (); | |
2906 | ||
c906108c | 2907 | clear_displays (); |
c1e56572 JK |
2908 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2909 | breakpoint_re_set (); | |
1bfeeb0f | 2910 | clear_last_displayed_sal (); |
c906108c | 2911 | clear_pc_function_cache (); |
06d3b283 | 2912 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2913 | |
2914 | /* Clear globals which might have pointed into a removed objfile. | |
2915 | FIXME: It's not clear which of these are supposed to persist | |
2916 | between expressions and which ought to be reset each time. */ | |
2917 | expression_context_block = NULL; | |
2918 | innermost_block = NULL; | |
8756216b DP |
2919 | |
2920 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2921 | varobj_invalidate (); | |
2922 | ||
c906108c SS |
2923 | } |
2924 | ||
74b7792f AC |
2925 | static void |
2926 | clear_symtab_users_cleanup (void *ignore) | |
2927 | { | |
c1e56572 | 2928 | clear_symtab_users (0); |
74b7792f | 2929 | } |
c906108c | 2930 | \f |
c906108c SS |
2931 | /* OVERLAYS: |
2932 | The following code implements an abstraction for debugging overlay sections. | |
2933 | ||
2934 | The target model is as follows: | |
2935 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2936 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2937 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2938 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2939 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2940 | sections should be considered to be mapped from the VMA to the LMA. |
2941 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2942 | For instance, if a section has been mapped then its contents |
c5aa993b | 2943 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2944 | |
2945 | Two levels of debugger support for overlays are available. One is | |
2946 | "manual", in which the debugger relies on the user to tell it which | |
2947 | overlays are currently mapped. This level of support is | |
2948 | implemented entirely in the core debugger, and the information about | |
2949 | whether a section is mapped is kept in the objfile->obj_section table. | |
2950 | ||
2951 | The second level of support is "automatic", and is only available if | |
2952 | the target-specific code provides functionality to read the target's | |
2953 | overlay mapping table, and translate its contents for the debugger | |
2954 | (by updating the mapped state information in the obj_section tables). | |
2955 | ||
2956 | The interface is as follows: | |
c5aa993b JM |
2957 | User commands: |
2958 | overlay map <name> -- tell gdb to consider this section mapped | |
2959 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2960 | overlay list -- list the sections that GDB thinks are mapped | |
2961 | overlay read-target -- get the target's state of what's mapped | |
2962 | overlay off/manual/auto -- set overlay debugging state | |
2963 | Functional interface: | |
2964 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2965 | section, return that section. | |
5417f6dc | 2966 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2967 | the pc, either in its VMA or its LMA |
714835d5 | 2968 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2969 | section_is_overlay(sect): true if section's VMA != LMA |
2970 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2971 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2972 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2973 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2974 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2975 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2976 | either in VMA or LMA depending on whether | |
c378eb4e | 2977 | the symbol's section is currently mapped. */ |
c906108c SS |
2978 | |
2979 | /* Overlay debugging state: */ | |
2980 | ||
d874f1e2 | 2981 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2982 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2983 | |
c906108c | 2984 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2985 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2986 | SECTION is loaded at an address different from where it will "run". */ |
2987 | ||
2988 | int | |
714835d5 | 2989 | section_is_overlay (struct obj_section *section) |
c906108c | 2990 | { |
714835d5 UW |
2991 | if (overlay_debugging && section) |
2992 | { | |
2993 | bfd *abfd = section->objfile->obfd; | |
2994 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2995 | |
714835d5 UW |
2996 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2997 | && bfd_section_lma (abfd, bfd_section) | |
2998 | != bfd_section_vma (abfd, bfd_section)) | |
2999 | return 1; | |
3000 | } | |
c906108c SS |
3001 | |
3002 | return 0; | |
3003 | } | |
3004 | ||
3005 | /* Function: overlay_invalidate_all (void) | |
3006 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3007 | ||
3008 | static void | |
fba45db2 | 3009 | overlay_invalidate_all (void) |
c906108c | 3010 | { |
c5aa993b | 3011 | struct objfile *objfile; |
c906108c SS |
3012 | struct obj_section *sect; |
3013 | ||
3014 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3015 | if (section_is_overlay (sect)) |
3016 | sect->ovly_mapped = -1; | |
c906108c SS |
3017 | } |
3018 | ||
714835d5 | 3019 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3020 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3021 | |
3022 | Access to the ovly_mapped flag is restricted to this function, so | |
3023 | that we can do automatic update. If the global flag | |
3024 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3025 | overlay_invalidate_all. If the mapped state of the particular | |
3026 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3027 | ||
714835d5 UW |
3028 | int |
3029 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3030 | { |
9216df95 UW |
3031 | struct gdbarch *gdbarch; |
3032 | ||
714835d5 | 3033 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3034 | return 0; |
3035 | ||
c5aa993b | 3036 | switch (overlay_debugging) |
c906108c SS |
3037 | { |
3038 | default: | |
d874f1e2 | 3039 | case ovly_off: |
c5aa993b | 3040 | return 0; /* overlay debugging off */ |
d874f1e2 | 3041 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3042 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3043 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3044 | gdbarch = get_objfile_arch (osect->objfile); |
3045 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3046 | { |
3047 | if (overlay_cache_invalid) | |
3048 | { | |
3049 | overlay_invalidate_all (); | |
3050 | overlay_cache_invalid = 0; | |
3051 | } | |
3052 | if (osect->ovly_mapped == -1) | |
9216df95 | 3053 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3054 | } |
3055 | /* fall thru to manual case */ | |
d874f1e2 | 3056 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3057 | return osect->ovly_mapped == 1; |
3058 | } | |
3059 | } | |
3060 | ||
c906108c SS |
3061 | /* Function: pc_in_unmapped_range |
3062 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3063 | ||
3064 | CORE_ADDR | |
714835d5 | 3065 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3066 | { |
714835d5 UW |
3067 | if (section_is_overlay (section)) |
3068 | { | |
3069 | bfd *abfd = section->objfile->obfd; | |
3070 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3071 | |
714835d5 UW |
3072 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3073 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3074 | CORE_ADDR offset = obj_section_offset (section); | |
3075 | ||
3076 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3077 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3078 | return 1; | |
3079 | } | |
c906108c | 3080 | |
c906108c SS |
3081 | return 0; |
3082 | } | |
3083 | ||
3084 | /* Function: pc_in_mapped_range | |
3085 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3086 | ||
3087 | CORE_ADDR | |
714835d5 | 3088 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3089 | { |
714835d5 UW |
3090 | if (section_is_overlay (section)) |
3091 | { | |
3092 | if (obj_section_addr (section) <= pc | |
3093 | && pc < obj_section_endaddr (section)) | |
3094 | return 1; | |
3095 | } | |
c906108c | 3096 | |
c906108c SS |
3097 | return 0; |
3098 | } | |
3099 | ||
9ec8e6a0 JB |
3100 | |
3101 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3102 | otherwise. */ | |
b9362cc7 | 3103 | static int |
714835d5 | 3104 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3105 | { |
714835d5 UW |
3106 | CORE_ADDR a_start = obj_section_addr (a); |
3107 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3108 | CORE_ADDR b_start = obj_section_addr (b); | |
3109 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3110 | |
3111 | return (a_start < b_end && b_start < a_end); | |
3112 | } | |
3113 | ||
c906108c SS |
3114 | /* Function: overlay_unmapped_address (PC, SECTION) |
3115 | Returns the address corresponding to PC in the unmapped (load) range. | |
3116 | May be the same as PC. */ | |
3117 | ||
3118 | CORE_ADDR | |
714835d5 | 3119 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3120 | { |
714835d5 UW |
3121 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3122 | { | |
3123 | bfd *abfd = section->objfile->obfd; | |
3124 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3125 | |
714835d5 UW |
3126 | return pc + bfd_section_lma (abfd, bfd_section) |
3127 | - bfd_section_vma (abfd, bfd_section); | |
3128 | } | |
c906108c SS |
3129 | |
3130 | return pc; | |
3131 | } | |
3132 | ||
3133 | /* Function: overlay_mapped_address (PC, SECTION) | |
3134 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3135 | May be the same as PC. */ | |
3136 | ||
3137 | CORE_ADDR | |
714835d5 | 3138 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3139 | { |
714835d5 UW |
3140 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3141 | { | |
3142 | bfd *abfd = section->objfile->obfd; | |
3143 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3144 | |
714835d5 UW |
3145 | return pc + bfd_section_vma (abfd, bfd_section) |
3146 | - bfd_section_lma (abfd, bfd_section); | |
3147 | } | |
c906108c SS |
3148 | |
3149 | return pc; | |
3150 | } | |
3151 | ||
3152 | ||
5417f6dc | 3153 | /* Function: symbol_overlayed_address |
c906108c SS |
3154 | Return one of two addresses (relative to the VMA or to the LMA), |
3155 | depending on whether the section is mapped or not. */ | |
3156 | ||
c5aa993b | 3157 | CORE_ADDR |
714835d5 | 3158 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3159 | { |
3160 | if (overlay_debugging) | |
3161 | { | |
c378eb4e | 3162 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3163 | if (section == 0) |
3164 | return address; | |
c378eb4e MS |
3165 | /* If the symbol's section is not an overlay, just return its |
3166 | address. */ | |
c906108c SS |
3167 | if (!section_is_overlay (section)) |
3168 | return address; | |
c378eb4e | 3169 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3170 | if (section_is_mapped (section)) |
3171 | return address; | |
3172 | /* | |
3173 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3174 | * then return its LOADED address rather than its vma address!! | |
3175 | */ | |
3176 | return overlay_unmapped_address (address, section); | |
3177 | } | |
3178 | return address; | |
3179 | } | |
3180 | ||
5417f6dc | 3181 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3182 | Return the best-match overlay section for PC: |
3183 | If PC matches a mapped overlay section's VMA, return that section. | |
3184 | Else if PC matches an unmapped section's VMA, return that section. | |
3185 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3186 | ||
714835d5 | 3187 | struct obj_section * |
fba45db2 | 3188 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3189 | { |
c5aa993b | 3190 | struct objfile *objfile; |
c906108c SS |
3191 | struct obj_section *osect, *best_match = NULL; |
3192 | ||
3193 | if (overlay_debugging) | |
3194 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3195 | if (section_is_overlay (osect)) |
c5aa993b | 3196 | { |
714835d5 | 3197 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3198 | { |
714835d5 UW |
3199 | if (section_is_mapped (osect)) |
3200 | return osect; | |
c5aa993b JM |
3201 | else |
3202 | best_match = osect; | |
3203 | } | |
714835d5 | 3204 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3205 | best_match = osect; |
3206 | } | |
714835d5 | 3207 | return best_match; |
c906108c SS |
3208 | } |
3209 | ||
3210 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3211 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3212 | currently marked as MAPPED, return that section. Else return NULL. */ |
3213 | ||
714835d5 | 3214 | struct obj_section * |
fba45db2 | 3215 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3216 | { |
c5aa993b | 3217 | struct objfile *objfile; |
c906108c SS |
3218 | struct obj_section *osect; |
3219 | ||
3220 | if (overlay_debugging) | |
3221 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3222 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3223 | return osect; | |
c906108c SS |
3224 | |
3225 | return NULL; | |
3226 | } | |
3227 | ||
3228 | /* Function: list_overlays_command | |
c378eb4e | 3229 | Print a list of mapped sections and their PC ranges. */ |
c906108c SS |
3230 | |
3231 | void | |
fba45db2 | 3232 | list_overlays_command (char *args, int from_tty) |
c906108c | 3233 | { |
c5aa993b JM |
3234 | int nmapped = 0; |
3235 | struct objfile *objfile; | |
c906108c SS |
3236 | struct obj_section *osect; |
3237 | ||
3238 | if (overlay_debugging) | |
3239 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3240 | if (section_is_mapped (osect)) |
c5aa993b | 3241 | { |
5af949e3 | 3242 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3243 | const char *name; |
3244 | bfd_vma lma, vma; | |
3245 | int size; | |
3246 | ||
3247 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3248 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3249 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3250 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3251 | ||
3252 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3253 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3254 | puts_filtered (" - "); |
5af949e3 | 3255 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3256 | printf_filtered (", mapped at "); |
5af949e3 | 3257 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3258 | puts_filtered (" - "); |
5af949e3 | 3259 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3260 | puts_filtered ("\n"); |
3261 | ||
3262 | nmapped++; | |
3263 | } | |
c906108c | 3264 | if (nmapped == 0) |
a3f17187 | 3265 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3266 | } |
3267 | ||
3268 | /* Function: map_overlay_command | |
3269 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3270 | ||
3271 | void | |
fba45db2 | 3272 | map_overlay_command (char *args, int from_tty) |
c906108c | 3273 | { |
c5aa993b JM |
3274 | struct objfile *objfile, *objfile2; |
3275 | struct obj_section *sec, *sec2; | |
c906108c SS |
3276 | |
3277 | if (!overlay_debugging) | |
3e43a32a MS |
3278 | error (_("Overlay debugging not enabled. Use " |
3279 | "either the 'overlay auto' or\n" | |
3280 | "the 'overlay manual' command.")); | |
c906108c SS |
3281 | |
3282 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3283 | error (_("Argument required: name of an overlay section")); |
c906108c | 3284 | |
c378eb4e | 3285 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3286 | ALL_OBJSECTIONS (objfile, sec) |
3287 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3288 | { |
c378eb4e | 3289 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3290 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3291 | continue; /* not an overlay section */ |
3292 | ||
c378eb4e | 3293 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3294 | sec->ovly_mapped = 1; |
3295 | ||
3296 | /* Next, make a pass and unmap any sections that are | |
3297 | overlapped by this new section: */ | |
3298 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3299 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3300 | { |
3301 | if (info_verbose) | |
a3f17187 | 3302 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3303 | bfd_section_name (objfile->obfd, |
3304 | sec2->the_bfd_section)); | |
c378eb4e | 3305 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3306 | } |
3307 | return; | |
3308 | } | |
8a3fe4f8 | 3309 | error (_("No overlay section called %s"), args); |
c906108c SS |
3310 | } |
3311 | ||
3312 | /* Function: unmap_overlay_command | |
5417f6dc | 3313 | Mark the overlay section as unmapped |
c906108c SS |
3314 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3315 | ||
3316 | void | |
fba45db2 | 3317 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3318 | { |
c5aa993b | 3319 | struct objfile *objfile; |
c906108c SS |
3320 | struct obj_section *sec; |
3321 | ||
3322 | if (!overlay_debugging) | |
3e43a32a MS |
3323 | error (_("Overlay debugging not enabled. " |
3324 | "Use either the 'overlay auto' or\n" | |
3325 | "the 'overlay manual' command.")); | |
c906108c SS |
3326 | |
3327 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3328 | error (_("Argument required: name of an overlay section")); |
c906108c | 3329 | |
c378eb4e | 3330 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3331 | ALL_OBJSECTIONS (objfile, sec) |
3332 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3333 | { |
3334 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3335 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3336 | sec->ovly_mapped = 0; |
3337 | return; | |
3338 | } | |
8a3fe4f8 | 3339 | error (_("No overlay section called %s"), args); |
c906108c SS |
3340 | } |
3341 | ||
3342 | /* Function: overlay_auto_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_auto_command (char *args, int from_tty) |
c906108c | 3348 | { |
d874f1e2 | 3349 | overlay_debugging = ovly_auto; |
1900040c | 3350 | enable_overlay_breakpoints (); |
c906108c | 3351 | if (info_verbose) |
a3f17187 | 3352 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3353 | } |
3354 | ||
3355 | /* Function: overlay_manual_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_manual_command (char *args, int from_tty) |
c906108c | 3361 | { |
d874f1e2 | 3362 | overlay_debugging = ovly_on; |
1900040c | 3363 | disable_overlay_breakpoints (); |
c906108c | 3364 | if (info_verbose) |
a3f17187 | 3365 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3366 | } |
3367 | ||
3368 | /* Function: overlay_off_command | |
3369 | A utility command to turn on overlay debugging. | |
c378eb4e | 3370 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3371 | |
3372 | static void | |
fba45db2 | 3373 | overlay_off_command (char *args, int from_tty) |
c906108c | 3374 | { |
d874f1e2 | 3375 | overlay_debugging = ovly_off; |
1900040c | 3376 | disable_overlay_breakpoints (); |
c906108c | 3377 | if (info_verbose) |
a3f17187 | 3378 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3379 | } |
3380 | ||
3381 | static void | |
fba45db2 | 3382 | overlay_load_command (char *args, int from_tty) |
c906108c | 3383 | { |
e17c207e UW |
3384 | struct gdbarch *gdbarch = get_current_arch (); |
3385 | ||
3386 | if (gdbarch_overlay_update_p (gdbarch)) | |
3387 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3388 | else |
8a3fe4f8 | 3389 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3390 | } |
3391 | ||
3392 | /* Function: overlay_command | |
c378eb4e | 3393 | A place-holder for a mis-typed command. */ |
c906108c | 3394 | |
c378eb4e | 3395 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3396 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3397 | |
3398 | static void | |
fba45db2 | 3399 | overlay_command (char *args, int from_tty) |
c906108c | 3400 | { |
c5aa993b | 3401 | printf_unfiltered |
c906108c SS |
3402 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3403 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3404 | } | |
3405 | ||
3406 | ||
3407 | /* Target Overlays for the "Simplest" overlay manager: | |
3408 | ||
5417f6dc RM |
3409 | This is GDB's default target overlay layer. It works with the |
3410 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3411 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3412 | so targets that use a different runtime overlay manager can |
c906108c SS |
3413 | substitute their own overlay_update function and take over the |
3414 | function pointer. | |
3415 | ||
3416 | The overlay_update function pokes around in the target's data structures | |
3417 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3418 | this information. | |
3419 | ||
3420 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3421 | unsigned _novlys; /# number of overlay sections #/ |
3422 | unsigned _ovly_table[_novlys][4] = { | |
3423 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3424 | {..., ..., ..., ...}, | |
3425 | } | |
3426 | unsigned _novly_regions; /# number of overlay regions #/ | |
3427 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3428 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3429 | {..., ..., ...}, | |
3430 | } | |
c906108c SS |
3431 | These functions will attempt to update GDB's mappedness state in the |
3432 | symbol section table, based on the target's mappedness state. | |
3433 | ||
3434 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3435 | attempt to detect when the cached copy is invalidated. The main | |
3436 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3437 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3438 | the target (whenever possible). */ |
c906108c SS |
3439 | |
3440 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3441 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3442 | static unsigned cache_novlys = 0; |
c906108c | 3443 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3444 | enum ovly_index |
3445 | { | |
3446 | VMA, SIZE, LMA, MAPPED | |
3447 | }; | |
c906108c | 3448 | |
c378eb4e | 3449 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3450 | static void |
fba45db2 | 3451 | simple_free_overlay_table (void) |
c906108c SS |
3452 | { |
3453 | if (cache_ovly_table) | |
b8c9b27d | 3454 | xfree (cache_ovly_table); |
c5aa993b | 3455 | cache_novlys = 0; |
c906108c SS |
3456 | cache_ovly_table = NULL; |
3457 | cache_ovly_table_base = 0; | |
3458 | } | |
3459 | ||
9216df95 | 3460 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3461 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3462 | static void |
9216df95 | 3463 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3464 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3465 | { |
c378eb4e | 3466 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3467 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3468 | int i; |
c906108c | 3469 | |
9216df95 | 3470 | read_memory (memaddr, buf, len * size); |
c906108c | 3471 | for (i = 0; i < len; i++) |
e17a4113 | 3472 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3473 | } |
3474 | ||
3475 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3476 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3477 | static int |
fba45db2 | 3478 | simple_read_overlay_table (void) |
c906108c | 3479 | { |
0d43edd1 | 3480 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3481 | struct gdbarch *gdbarch; |
3482 | int word_size; | |
e17a4113 | 3483 | enum bfd_endian byte_order; |
c906108c SS |
3484 | |
3485 | simple_free_overlay_table (); | |
9b27852e | 3486 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3487 | if (! novlys_msym) |
c906108c | 3488 | { |
8a3fe4f8 | 3489 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3490 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3491 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3492 | return 0; |
c906108c | 3493 | } |
0d43edd1 | 3494 | |
9b27852e | 3495 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3496 | if (! ovly_table_msym) |
3497 | { | |
8a3fe4f8 | 3498 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3499 | "`_ovly_table' array\n" |
8a3fe4f8 | 3500 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3501 | return 0; |
3502 | } | |
3503 | ||
9216df95 UW |
3504 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3505 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3506 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3507 | |
e17a4113 UW |
3508 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3509 | 4, byte_order); | |
0d43edd1 JB |
3510 | cache_ovly_table |
3511 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3512 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3513 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3514 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3515 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3516 | |
c5aa993b | 3517 | return 1; /* SUCCESS */ |
c906108c SS |
3518 | } |
3519 | ||
5417f6dc | 3520 | /* Function: simple_overlay_update_1 |
c906108c SS |
3521 | A helper function for simple_overlay_update. Assuming a cached copy |
3522 | of _ovly_table exists, look through it to find an entry whose vma, | |
3523 | lma and size match those of OSECT. Re-read the entry and make sure | |
3524 | it still matches OSECT (else the table may no longer be valid). | |
3525 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3526 | success, 0 for failure. */ | |
3527 | ||
3528 | static int | |
fba45db2 | 3529 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3530 | { |
3531 | int i, size; | |
fbd35540 MS |
3532 | bfd *obfd = osect->objfile->obfd; |
3533 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3534 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3535 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3536 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3537 | |
2c500098 | 3538 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3539 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3540 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3541 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3542 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3543 | { |
9216df95 UW |
3544 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3545 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3546 | 4, word_size, byte_order); |
fbd35540 MS |
3547 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3548 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3549 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3550 | { |
3551 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3552 | return 1; | |
3553 | } | |
c378eb4e | 3554 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3555 | return 0; |
3556 | } | |
3557 | return 0; | |
3558 | } | |
3559 | ||
3560 | /* Function: simple_overlay_update | |
5417f6dc RM |
3561 | If OSECT is NULL, then update all sections' mapped state |
3562 | (after re-reading the entire target _ovly_table). | |
3563 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3564 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3565 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3566 | re-read the entire cache, and go ahead and update all sections. */ |
3567 | ||
1c772458 | 3568 | void |
fba45db2 | 3569 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3570 | { |
c5aa993b | 3571 | struct objfile *objfile; |
c906108c | 3572 | |
c378eb4e | 3573 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3574 | if (osect) |
c378eb4e | 3575 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3576 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3577 | { |
3578 | /* Does its cached location match what's currently in the | |
3579 | symtab? */ | |
3580 | struct minimal_symbol *minsym | |
3581 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3582 | ||
3583 | if (minsym == NULL) | |
3584 | error (_("Error reading inferior's overlay table: couldn't " | |
3585 | "find `_ovly_table' array\n" | |
3586 | "in inferior. Use `overlay manual' mode.")); | |
3587 | ||
3588 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3589 | /* Then go ahead and try to look up this single section in | |
3590 | the cache. */ | |
3591 | if (simple_overlay_update_1 (osect)) | |
3592 | /* Found it! We're done. */ | |
3593 | return; | |
3594 | } | |
c906108c SS |
3595 | |
3596 | /* Cached table no good: need to read the entire table anew. | |
3597 | Or else we want all the sections, in which case it's actually | |
3598 | more efficient to read the whole table in one block anyway. */ | |
3599 | ||
0d43edd1 JB |
3600 | if (! simple_read_overlay_table ()) |
3601 | return; | |
3602 | ||
c378eb4e | 3603 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3604 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3605 | if (section_is_overlay (osect)) |
c5aa993b JM |
3606 | { |
3607 | int i, size; | |
fbd35540 MS |
3608 | bfd *obfd = osect->objfile->obfd; |
3609 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3610 | |
2c500098 | 3611 | size = bfd_get_section_size (bsect); |
c5aa993b | 3612 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3613 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3614 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3615 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3616 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3617 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3618 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3619 | } |
3620 | } | |
c906108c SS |
3621 | } |
3622 | ||
086df311 DJ |
3623 | /* Set the output sections and output offsets for section SECTP in |
3624 | ABFD. The relocation code in BFD will read these offsets, so we | |
3625 | need to be sure they're initialized. We map each section to itself, | |
3626 | with no offset; this means that SECTP->vma will be honored. */ | |
3627 | ||
3628 | static void | |
3629 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3630 | { | |
3631 | sectp->output_section = sectp; | |
3632 | sectp->output_offset = 0; | |
3633 | } | |
3634 | ||
ac8035ab TG |
3635 | /* Default implementation for sym_relocate. */ |
3636 | ||
3637 | ||
3638 | bfd_byte * | |
3639 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3640 | bfd_byte *buf) | |
3641 | { | |
3019eac3 DE |
3642 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3643 | DWO file. */ | |
3644 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3645 | |
3646 | /* We're only interested in sections with relocation | |
3647 | information. */ | |
3648 | if ((sectp->flags & SEC_RELOC) == 0) | |
3649 | return NULL; | |
3650 | ||
3651 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3652 | all sections begin at 0. */ | |
3653 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3654 | ||
3655 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3656 | } | |
3657 | ||
086df311 DJ |
3658 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3659 | contents are stored in BUF if it is non-NULL, or returned in a | |
3660 | malloc'd buffer otherwise. | |
3661 | ||
3662 | For some platforms and debug info formats, shared libraries contain | |
3663 | relocations against the debug sections (particularly for DWARF-2; | |
3664 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3665 | the version of the linker in use). Also, ELF object files naturally | |
3666 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3667 | the relocations in order to get the locations of symbols correct. |
3668 | Another example that may require relocation processing, is the | |
3669 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3670 | debug section. */ | |
086df311 DJ |
3671 | |
3672 | bfd_byte * | |
ac8035ab TG |
3673 | symfile_relocate_debug_section (struct objfile *objfile, |
3674 | asection *sectp, bfd_byte *buf) | |
086df311 | 3675 | { |
ac8035ab | 3676 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3677 | |
ac8035ab | 3678 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3679 | } |
c906108c | 3680 | |
31d99776 DJ |
3681 | struct symfile_segment_data * |
3682 | get_symfile_segment_data (bfd *abfd) | |
3683 | { | |
00b5771c | 3684 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3685 | |
3686 | if (sf == NULL) | |
3687 | return NULL; | |
3688 | ||
3689 | return sf->sym_segments (abfd); | |
3690 | } | |
3691 | ||
3692 | void | |
3693 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3694 | { | |
3695 | xfree (data->segment_bases); | |
3696 | xfree (data->segment_sizes); | |
3697 | xfree (data->segment_info); | |
3698 | xfree (data); | |
3699 | } | |
3700 | ||
28c32713 JB |
3701 | |
3702 | /* Given: | |
3703 | - DATA, containing segment addresses from the object file ABFD, and | |
3704 | the mapping from ABFD's sections onto the segments that own them, | |
3705 | and | |
3706 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3707 | segment addresses reported by the target, | |
3708 | store the appropriate offsets for each section in OFFSETS. | |
3709 | ||
3710 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3711 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3712 | ||
8d385431 DJ |
3713 | If there are more entries, then ignore the extra. The target may |
3714 | not be able to distinguish between an empty data segment and a | |
3715 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3716 | int |
3717 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3718 | struct section_offsets *offsets, | |
3719 | int num_segment_bases, | |
3720 | const CORE_ADDR *segment_bases) | |
3721 | { | |
3722 | int i; | |
3723 | asection *sect; | |
3724 | ||
28c32713 JB |
3725 | /* It doesn't make sense to call this function unless you have some |
3726 | segment base addresses. */ | |
202b96c1 | 3727 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3728 | |
31d99776 DJ |
3729 | /* If we do not have segment mappings for the object file, we |
3730 | can not relocate it by segments. */ | |
3731 | gdb_assert (data != NULL); | |
3732 | gdb_assert (data->num_segments > 0); | |
3733 | ||
31d99776 DJ |
3734 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3735 | { | |
31d99776 DJ |
3736 | int which = data->segment_info[i]; |
3737 | ||
28c32713 JB |
3738 | gdb_assert (0 <= which && which <= data->num_segments); |
3739 | ||
3740 | /* Don't bother computing offsets for sections that aren't | |
3741 | loaded as part of any segment. */ | |
3742 | if (! which) | |
3743 | continue; | |
3744 | ||
3745 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3746 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3747 | if (which > num_segment_bases) |
28c32713 | 3748 | which = num_segment_bases; |
31d99776 | 3749 | |
28c32713 JB |
3750 | offsets->offsets[i] = (segment_bases[which - 1] |
3751 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3752 | } |
3753 | ||
3754 | return 1; | |
3755 | } | |
3756 | ||
3757 | static void | |
3758 | symfile_find_segment_sections (struct objfile *objfile) | |
3759 | { | |
3760 | bfd *abfd = objfile->obfd; | |
3761 | int i; | |
3762 | asection *sect; | |
3763 | struct symfile_segment_data *data; | |
3764 | ||
3765 | data = get_symfile_segment_data (objfile->obfd); | |
3766 | if (data == NULL) | |
3767 | return; | |
3768 | ||
3769 | if (data->num_segments != 1 && data->num_segments != 2) | |
3770 | { | |
3771 | free_symfile_segment_data (data); | |
3772 | return; | |
3773 | } | |
3774 | ||
3775 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3776 | { | |
31d99776 DJ |
3777 | int which = data->segment_info[i]; |
3778 | ||
3779 | if (which == 1) | |
3780 | { | |
3781 | if (objfile->sect_index_text == -1) | |
3782 | objfile->sect_index_text = sect->index; | |
3783 | ||
3784 | if (objfile->sect_index_rodata == -1) | |
3785 | objfile->sect_index_rodata = sect->index; | |
3786 | } | |
3787 | else if (which == 2) | |
3788 | { | |
3789 | if (objfile->sect_index_data == -1) | |
3790 | objfile->sect_index_data = sect->index; | |
3791 | ||
3792 | if (objfile->sect_index_bss == -1) | |
3793 | objfile->sect_index_bss = sect->index; | |
3794 | } | |
3795 | } | |
3796 | ||
3797 | free_symfile_segment_data (data); | |
3798 | } | |
3799 | ||
c906108c | 3800 | void |
fba45db2 | 3801 | _initialize_symfile (void) |
c906108c SS |
3802 | { |
3803 | struct cmd_list_element *c; | |
c5aa993b | 3804 | |
1a966eab AC |
3805 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3806 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3807 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3808 | to execute."), &cmdlist); |
5ba2abeb | 3809 | set_cmd_completer (c, filename_completer); |
c906108c | 3810 | |
1a966eab | 3811 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3812 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3813 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3814 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3815 | The optional arguments are section-name section-address pairs and\n\ |
3816 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3817 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3818 | &cmdlist); |
5ba2abeb | 3819 | set_cmd_completer (c, filename_completer); |
c906108c | 3820 | |
1a966eab AC |
3821 | c = add_cmd ("load", class_files, load_command, _("\ |
3822 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3823 | for access from GDB.\n\ |
3824 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3825 | set_cmd_completer (c, filename_completer); |
c906108c | 3826 | |
c5aa993b | 3827 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3828 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3829 | "overlay ", 0, &cmdlist); |
3830 | ||
3831 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3832 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3833 | ||
c5aa993b | 3834 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3835 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3836 | |
c5aa993b | 3837 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3838 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3839 | |
c5aa993b | 3840 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3841 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3842 | |
c5aa993b | 3843 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3844 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3845 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3846 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3847 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3848 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3849 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3850 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3851 | |
3852 | /* Filename extension to source language lookup table: */ | |
3853 | init_filename_language_table (); | |
26c41df3 AC |
3854 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3855 | &ext_args, _("\ | |
3856 | Set mapping between filename extension and source language."), _("\ | |
3857 | Show mapping between filename extension and source language."), _("\ | |
3858 | Usage: set extension-language .foo bar"), | |
3859 | set_ext_lang_command, | |
920d2a44 | 3860 | show_ext_args, |
26c41df3 | 3861 | &setlist, &showlist); |
c906108c | 3862 | |
c5aa993b | 3863 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3864 | _("All filename extensions associated with a source language.")); |
917317f4 | 3865 | |
525226b5 AC |
3866 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3867 | &debug_file_directory, _("\ | |
24ddea62 JK |
3868 | Set the directories where separate debug symbols are searched for."), _("\ |
3869 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3870 | Separate debug symbols are first searched for in the same\n\ |
3871 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3872 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3873 | each global debug-file-directory component prepended."), |
525226b5 | 3874 | NULL, |
920d2a44 | 3875 | show_debug_file_directory, |
525226b5 | 3876 | &setlist, &showlist); |
c906108c | 3877 | } |