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 | ||
1211 | objf = symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, | |
63524580 | 1212 | flags, NULL); |
8ac244b4 TT |
1213 | do_cleanups (cleanup); |
1214 | return objf; | |
7904e09f JB |
1215 | } |
1216 | ||
1217 | ||
d7db6da9 FN |
1218 | /* Call symbol_file_add() with default values and update whatever is |
1219 | affected by the loading of a new main(). | |
1220 | Used when the file is supplied in the gdb command line | |
1221 | and by some targets with special loading requirements. | |
1222 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1223 | argument for the switches that can only be specified in the symbol_file | |
1224 | command itself. */ | |
5417f6dc | 1225 | |
1adeb98a FN |
1226 | void |
1227 | symbol_file_add_main (char *args, int from_tty) | |
1228 | { | |
d7db6da9 FN |
1229 | symbol_file_add_main_1 (args, from_tty, 0); |
1230 | } | |
1231 | ||
1232 | static void | |
1233 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1234 | { | |
7dcd53a0 TT |
1235 | const int add_flags = (current_inferior ()->symfile_flags |
1236 | | SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0)); | |
1237 | ||
7eedccfa | 1238 | symbol_file_add (args, add_flags, NULL, flags); |
d7db6da9 | 1239 | |
d7db6da9 FN |
1240 | /* Getting new symbols may change our opinion about |
1241 | what is frameless. */ | |
1242 | reinit_frame_cache (); | |
1243 | ||
7dcd53a0 TT |
1244 | if ((flags & SYMFILE_NO_READ) == 0) |
1245 | set_initial_language (); | |
1adeb98a FN |
1246 | } |
1247 | ||
1248 | void | |
1249 | symbol_file_clear (int from_tty) | |
1250 | { | |
1251 | if ((have_full_symbols () || have_partial_symbols ()) | |
1252 | && from_tty | |
0430b0d6 AS |
1253 | && (symfile_objfile |
1254 | ? !query (_("Discard symbol table from `%s'? "), | |
1255 | symfile_objfile->name) | |
1256 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1257 | error (_("Not confirmed.")); |
1adeb98a | 1258 | |
0133421a JK |
1259 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1260 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1261 | no_shared_libraries (NULL, from_tty); |
1262 | ||
0133421a JK |
1263 | free_all_objfiles (); |
1264 | ||
adb7f338 | 1265 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1266 | if (from_tty) |
1267 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1268 | } |
1269 | ||
5b5d99cf JB |
1270 | static char * |
1271 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1272 | { | |
1273 | asection *sect; | |
1274 | bfd_size_type debuglink_size; | |
1275 | unsigned long crc32; | |
1276 | char *contents; | |
1277 | int crc_offset; | |
5417f6dc | 1278 | |
5b5d99cf JB |
1279 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1280 | ||
1281 | if (sect == NULL) | |
1282 | return NULL; | |
1283 | ||
1284 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1285 | |
5b5d99cf JB |
1286 | contents = xmalloc (debuglink_size); |
1287 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1288 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1289 | ||
c378eb4e | 1290 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ |
5b5d99cf JB |
1291 | crc_offset = strlen (contents) + 1; |
1292 | crc_offset = (crc_offset + 3) & ~3; | |
1293 | ||
1294 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1295 | |
5b5d99cf JB |
1296 | *crc32_out = crc32; |
1297 | return contents; | |
1298 | } | |
1299 | ||
904578ed JK |
1300 | /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and |
1301 | return 1. Otherwise print a warning and return 0. ABFD seek position is | |
1302 | not preserved. */ | |
1303 | ||
1304 | static int | |
1305 | get_file_crc (bfd *abfd, unsigned long *file_crc_return) | |
1306 | { | |
1307 | unsigned long file_crc = 0; | |
1308 | ||
1309 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
1310 | { | |
1311 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1312 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1313 | return 0; | |
1314 | } | |
1315 | ||
1316 | for (;;) | |
1317 | { | |
1318 | gdb_byte buffer[8 * 1024]; | |
1319 | bfd_size_type count; | |
1320 | ||
1321 | count = bfd_bread (buffer, sizeof (buffer), abfd); | |
1322 | if (count == (bfd_size_type) -1) | |
1323 | { | |
1324 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1325 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1326 | return 0; | |
1327 | } | |
1328 | if (count == 0) | |
1329 | break; | |
1330 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1331 | } | |
1332 | ||
1333 | *file_crc_return = file_crc; | |
1334 | return 1; | |
1335 | } | |
1336 | ||
5b5d99cf | 1337 | static int |
287ccc17 | 1338 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1339 | struct objfile *parent_objfile) |
5b5d99cf | 1340 | { |
904578ed JK |
1341 | unsigned long file_crc; |
1342 | int file_crc_p; | |
f1838a98 | 1343 | bfd *abfd; |
32a0e547 | 1344 | struct stat parent_stat, abfd_stat; |
904578ed | 1345 | int verified_as_different; |
32a0e547 JK |
1346 | |
1347 | /* Find a separate debug info file as if symbols would be present in | |
1348 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1349 | section can contain just the basename of PARENT_OBJFILE without any | |
1350 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1351 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1352 | |
0ba1096a | 1353 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1354 | return 0; |
5b5d99cf | 1355 | |
08d2cd74 | 1356 | abfd = gdb_bfd_open_maybe_remote (name); |
f1838a98 UW |
1357 | |
1358 | if (!abfd) | |
5b5d99cf JB |
1359 | return 0; |
1360 | ||
0ba1096a | 1361 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1362 | |
1363 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1364 | st_ino; they always set it to zero. (Windows does provide a | |
1365 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1366 | case. While there is no guarantee that a system that provides | |
1367 | meaningful inode numbers will never set st_ino to zero, this is | |
1368 | merely an optimization, so we do not need to worry about false | |
1369 | negatives. */ | |
1370 | ||
1371 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1372 | && abfd_stat.st_ino != 0 |
1373 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1374 | { |
904578ed JK |
1375 | if (abfd_stat.st_dev == parent_stat.st_dev |
1376 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1377 | { | |
cbb099e8 | 1378 | gdb_bfd_unref (abfd); |
904578ed JK |
1379 | return 0; |
1380 | } | |
1381 | verified_as_different = 1; | |
32a0e547 | 1382 | } |
904578ed JK |
1383 | else |
1384 | verified_as_different = 0; | |
32a0e547 | 1385 | |
904578ed | 1386 | file_crc_p = get_file_crc (abfd, &file_crc); |
5b5d99cf | 1387 | |
cbb099e8 | 1388 | gdb_bfd_unref (abfd); |
5b5d99cf | 1389 | |
904578ed JK |
1390 | if (!file_crc_p) |
1391 | return 0; | |
1392 | ||
287ccc17 JK |
1393 | if (crc != file_crc) |
1394 | { | |
904578ed JK |
1395 | /* If one (or both) the files are accessed for example the via "remote:" |
1396 | gdbserver way it does not support the bfd_stat operation. Verify | |
1397 | whether those two files are not the same manually. */ | |
1398 | ||
1399 | if (!verified_as_different && !parent_objfile->crc32_p) | |
1400 | { | |
1401 | parent_objfile->crc32_p = get_file_crc (parent_objfile->obfd, | |
1402 | &parent_objfile->crc32); | |
1403 | if (!parent_objfile->crc32_p) | |
1404 | return 0; | |
1405 | } | |
1406 | ||
0e8aefe7 | 1407 | if (verified_as_different || parent_objfile->crc32 != file_crc) |
904578ed JK |
1408 | warning (_("the debug information found in \"%s\"" |
1409 | " does not match \"%s\" (CRC mismatch).\n"), | |
1410 | name, parent_objfile->name); | |
1411 | ||
287ccc17 JK |
1412 | return 0; |
1413 | } | |
1414 | ||
1415 | return 1; | |
5b5d99cf JB |
1416 | } |
1417 | ||
aa28a74e | 1418 | char *debug_file_directory = NULL; |
920d2a44 AC |
1419 | static void |
1420 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1421 | struct cmd_list_element *c, const char *value) | |
1422 | { | |
3e43a32a MS |
1423 | fprintf_filtered (file, |
1424 | _("The directory where separate debug " | |
1425 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1426 | value); |
1427 | } | |
5b5d99cf JB |
1428 | |
1429 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1430 | #define DEBUG_SUBDIRECTORY ".debug" | |
1431 | #endif | |
1432 | ||
1db33378 PP |
1433 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1434 | where the original file resides (may not be the same as | |
1435 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
1436 | looking for. Returns the name of the debuginfo, of NULL. */ | |
1437 | ||
1438 | static char * | |
1439 | find_separate_debug_file (const char *dir, | |
1440 | const char *canon_dir, | |
1441 | const char *debuglink, | |
1442 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1443 | { |
1db33378 PP |
1444 | char *debugdir; |
1445 | char *debugfile; | |
9cce227f | 1446 | int i; |
e4ab2fad JK |
1447 | VEC (char_ptr) *debugdir_vec; |
1448 | struct cleanup *back_to; | |
1449 | int ix; | |
5b5d99cf | 1450 | |
1db33378 | 1451 | /* Set I to max (strlen (canon_dir), strlen (dir)). */ |
1ffa32ee | 1452 | i = strlen (dir); |
1db33378 PP |
1453 | if (canon_dir != NULL && strlen (canon_dir) > i) |
1454 | i = strlen (canon_dir); | |
1ffa32ee | 1455 | |
25522fae JK |
1456 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1457 | + i | |
1458 | + strlen (DEBUG_SUBDIRECTORY) | |
1459 | + strlen ("/") | |
1db33378 | 1460 | + strlen (debuglink) |
25522fae | 1461 | + 1); |
5b5d99cf JB |
1462 | |
1463 | /* First try in the same directory as the original file. */ | |
1464 | strcpy (debugfile, dir); | |
1db33378 | 1465 | strcat (debugfile, debuglink); |
5b5d99cf | 1466 | |
32a0e547 | 1467 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1468 | return debugfile; |
5417f6dc | 1469 | |
5b5d99cf JB |
1470 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1471 | strcpy (debugfile, dir); | |
1472 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1473 | strcat (debugfile, "/"); | |
1db33378 | 1474 | strcat (debugfile, debuglink); |
5b5d99cf | 1475 | |
32a0e547 | 1476 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1477 | return debugfile; |
5417f6dc | 1478 | |
24ddea62 | 1479 | /* Then try in the global debugfile directories. |
f888f159 | 1480 | |
24ddea62 JK |
1481 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1482 | cause "/..." lookups. */ | |
5417f6dc | 1483 | |
e4ab2fad JK |
1484 | debugdir_vec = dirnames_to_char_ptr_vec (debug_file_directory); |
1485 | back_to = make_cleanup_free_char_ptr_vec (debugdir_vec); | |
24ddea62 | 1486 | |
e4ab2fad JK |
1487 | for (ix = 0; VEC_iterate (char_ptr, debugdir_vec, ix, debugdir); ++ix) |
1488 | { | |
1489 | strcpy (debugfile, debugdir); | |
aa28a74e | 1490 | strcat (debugfile, "/"); |
24ddea62 | 1491 | strcat (debugfile, dir); |
1db33378 | 1492 | strcat (debugfile, debuglink); |
aa28a74e | 1493 | |
32a0e547 | 1494 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1495 | return debugfile; |
24ddea62 JK |
1496 | |
1497 | /* If the file is in the sysroot, try using its base path in the | |
1498 | global debugfile directory. */ | |
1db33378 PP |
1499 | if (canon_dir != NULL |
1500 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1501 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1502 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1503 | { |
e4ab2fad | 1504 | strcpy (debugfile, debugdir); |
1db33378 | 1505 | strcat (debugfile, canon_dir + strlen (gdb_sysroot)); |
24ddea62 | 1506 | strcat (debugfile, "/"); |
1db33378 | 1507 | strcat (debugfile, debuglink); |
24ddea62 | 1508 | |
32a0e547 | 1509 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1510 | return debugfile; |
24ddea62 | 1511 | } |
aa28a74e | 1512 | } |
f888f159 | 1513 | |
e4ab2fad | 1514 | do_cleanups (back_to); |
25522fae | 1515 | xfree (debugfile); |
1db33378 PP |
1516 | return NULL; |
1517 | } | |
1518 | ||
1519 | /* Modify PATH to contain only "directory/" part of PATH. | |
1520 | If there were no directory separators in PATH, PATH will be empty | |
1521 | string on return. */ | |
1522 | ||
1523 | static void | |
1524 | terminate_after_last_dir_separator (char *path) | |
1525 | { | |
1526 | int i; | |
1527 | ||
1528 | /* Strip off the final filename part, leaving the directory name, | |
1529 | followed by a slash. The directory can be relative or absolute. */ | |
1530 | for (i = strlen(path) - 1; i >= 0; i--) | |
1531 | if (IS_DIR_SEPARATOR (path[i])) | |
1532 | break; | |
1533 | ||
1534 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1535 | path[i + 1] = '\0'; | |
1536 | } | |
1537 | ||
1538 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
1539 | Returns pathname, or NULL. */ | |
1540 | ||
1541 | char * | |
1542 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1543 | { | |
1544 | char *debuglink; | |
1545 | char *dir, *canon_dir; | |
1546 | char *debugfile; | |
1547 | unsigned long crc32; | |
1548 | struct cleanup *cleanups; | |
1549 | ||
1550 | debuglink = get_debug_link_info (objfile, &crc32); | |
1551 | ||
1552 | if (debuglink == NULL) | |
1553 | { | |
1554 | /* There's no separate debug info, hence there's no way we could | |
1555 | load it => no warning. */ | |
1556 | return NULL; | |
1557 | } | |
1558 | ||
71bdabee | 1559 | cleanups = make_cleanup (xfree, debuglink); |
1db33378 | 1560 | dir = xstrdup (objfile->name); |
71bdabee | 1561 | make_cleanup (xfree, dir); |
1db33378 PP |
1562 | terminate_after_last_dir_separator (dir); |
1563 | canon_dir = lrealpath (dir); | |
1564 | ||
1565 | debugfile = find_separate_debug_file (dir, canon_dir, debuglink, | |
1566 | crc32, objfile); | |
1567 | xfree (canon_dir); | |
1568 | ||
1569 | if (debugfile == NULL) | |
1570 | { | |
1571 | #ifdef HAVE_LSTAT | |
1572 | /* For PR gdb/9538, try again with realpath (if different from the | |
1573 | original). */ | |
1574 | ||
1575 | struct stat st_buf; | |
1576 | ||
1577 | if (lstat (objfile->name, &st_buf) == 0 && S_ISLNK(st_buf.st_mode)) | |
1578 | { | |
1579 | char *symlink_dir; | |
1580 | ||
1581 | symlink_dir = lrealpath (objfile->name); | |
1582 | if (symlink_dir != NULL) | |
1583 | { | |
1584 | make_cleanup (xfree, symlink_dir); | |
1585 | terminate_after_last_dir_separator (symlink_dir); | |
1586 | if (strcmp (dir, symlink_dir) != 0) | |
1587 | { | |
1588 | /* Different directory, so try using it. */ | |
1589 | debugfile = find_separate_debug_file (symlink_dir, | |
1590 | symlink_dir, | |
1591 | debuglink, | |
1592 | crc32, | |
1593 | objfile); | |
1594 | } | |
1595 | } | |
1596 | } | |
1597 | #endif /* HAVE_LSTAT */ | |
1598 | } | |
aa28a74e | 1599 | |
1db33378 | 1600 | do_cleanups (cleanups); |
25522fae | 1601 | return debugfile; |
5b5d99cf JB |
1602 | } |
1603 | ||
1604 | ||
c906108c SS |
1605 | /* This is the symbol-file command. Read the file, analyze its |
1606 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1607 | the command is rather bizarre: |
1608 | ||
1609 | 1. The function buildargv implements various quoting conventions | |
1610 | which are undocumented and have little or nothing in common with | |
1611 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1612 | ||
1613 | 2. Options are used, which are not generally used in GDB (perhaps | |
1614 | "set mapped on", "set readnow on" would be better) | |
1615 | ||
1616 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1617 | conventions (because it is confusing and inconvenient). */ |
1618 | ||
1619 | void | |
fba45db2 | 1620 | symbol_file_command (char *args, int from_tty) |
c906108c | 1621 | { |
c906108c SS |
1622 | dont_repeat (); |
1623 | ||
1624 | if (args == NULL) | |
1625 | { | |
1adeb98a | 1626 | symbol_file_clear (from_tty); |
c906108c SS |
1627 | } |
1628 | else | |
1629 | { | |
d1a41061 | 1630 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1631 | int flags = OBJF_USERLOADED; |
1632 | struct cleanup *cleanups; | |
1633 | char *name = NULL; | |
1634 | ||
7a292a7a | 1635 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1636 | while (*argv != NULL) |
1637 | { | |
78a4a9b9 AC |
1638 | if (strcmp (*argv, "-readnow") == 0) |
1639 | flags |= OBJF_READNOW; | |
1640 | else if (**argv == '-') | |
8a3fe4f8 | 1641 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1642 | else |
1643 | { | |
cb2f3a29 | 1644 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1645 | name = *argv; |
78a4a9b9 | 1646 | } |
cb2f3a29 | 1647 | |
c906108c SS |
1648 | argv++; |
1649 | } | |
1650 | ||
1651 | if (name == NULL) | |
cb2f3a29 MK |
1652 | error (_("no symbol file name was specified")); |
1653 | ||
c906108c SS |
1654 | do_cleanups (cleanups); |
1655 | } | |
1656 | } | |
1657 | ||
1658 | /* Set the initial language. | |
1659 | ||
cb2f3a29 MK |
1660 | FIXME: A better solution would be to record the language in the |
1661 | psymtab when reading partial symbols, and then use it (if known) to | |
1662 | set the language. This would be a win for formats that encode the | |
1663 | language in an easily discoverable place, such as DWARF. For | |
1664 | stabs, we can jump through hoops looking for specially named | |
1665 | symbols or try to intuit the language from the specific type of | |
1666 | stabs we find, but we can't do that until later when we read in | |
1667 | full symbols. */ | |
c906108c | 1668 | |
8b60591b | 1669 | void |
fba45db2 | 1670 | set_initial_language (void) |
c906108c | 1671 | { |
c5aa993b | 1672 | enum language lang = language_unknown; |
c906108c | 1673 | |
01f8c46d JK |
1674 | if (language_of_main != language_unknown) |
1675 | lang = language_of_main; | |
1676 | else | |
1677 | { | |
1678 | const char *filename; | |
f888f159 | 1679 | |
01f8c46d JK |
1680 | filename = find_main_filename (); |
1681 | if (filename != NULL) | |
1682 | lang = deduce_language_from_filename (filename); | |
1683 | } | |
cb2f3a29 | 1684 | |
ccefe4c4 TT |
1685 | if (lang == language_unknown) |
1686 | { | |
1687 | /* Make C the default language */ | |
1688 | lang = language_c; | |
c906108c | 1689 | } |
ccefe4c4 TT |
1690 | |
1691 | set_language (lang); | |
1692 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1693 | } |
1694 | ||
874f5765 | 1695 | /* If NAME is a remote name open the file using remote protocol, otherwise |
cbb099e8 TT |
1696 | open it normally. Returns a new reference to the BFD. On error, |
1697 | returns NULL with the BFD error set. */ | |
874f5765 TG |
1698 | |
1699 | bfd * | |
08d2cd74 | 1700 | gdb_bfd_open_maybe_remote (const char *name) |
874f5765 | 1701 | { |
520b0001 TT |
1702 | bfd *result; |
1703 | ||
874f5765 | 1704 | if (remote_filename_p (name)) |
520b0001 | 1705 | result = remote_bfd_open (name, gnutarget); |
874f5765 | 1706 | else |
64c31149 | 1707 | result = gdb_bfd_openr (name, gnutarget); |
520b0001 | 1708 | |
520b0001 | 1709 | return result; |
874f5765 TG |
1710 | } |
1711 | ||
1712 | ||
cb2f3a29 MK |
1713 | /* Open the file specified by NAME and hand it off to BFD for |
1714 | preliminary analysis. Return a newly initialized bfd *, which | |
1715 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1716 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1717 | |
1718 | bfd * | |
fba45db2 | 1719 | symfile_bfd_open (char *name) |
c906108c SS |
1720 | { |
1721 | bfd *sym_bfd; | |
1722 | int desc; | |
1723 | char *absolute_name; | |
1724 | ||
f1838a98 UW |
1725 | if (remote_filename_p (name)) |
1726 | { | |
520b0001 | 1727 | sym_bfd = remote_bfd_open (name, gnutarget); |
f1838a98 | 1728 | if (!sym_bfd) |
a4453b7e TT |
1729 | error (_("`%s': can't open to read symbols: %s."), name, |
1730 | bfd_errmsg (bfd_get_error ())); | |
f1838a98 UW |
1731 | |
1732 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1733 | { | |
f9a062ff | 1734 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 UW |
1735 | error (_("`%s': can't read symbols: %s."), name, |
1736 | bfd_errmsg (bfd_get_error ())); | |
1737 | } | |
1738 | ||
1739 | return sym_bfd; | |
1740 | } | |
1741 | ||
cb2f3a29 | 1742 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1743 | |
1744 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1745 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1746 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1747 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1748 | if (desc < 0) |
1749 | { | |
1750 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1751 | |
c906108c | 1752 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1753 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1754 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1755 | } |
1756 | #endif | |
1757 | if (desc < 0) | |
1758 | { | |
b8c9b27d | 1759 | make_cleanup (xfree, name); |
c906108c SS |
1760 | perror_with_name (name); |
1761 | } | |
cb2f3a29 | 1762 | |
cb2f3a29 MK |
1763 | xfree (name); |
1764 | name = absolute_name; | |
a4453b7e | 1765 | make_cleanup (xfree, name); |
c906108c | 1766 | |
64c31149 | 1767 | sym_bfd = gdb_bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1768 | if (!sym_bfd) |
1769 | { | |
b8c9b27d | 1770 | make_cleanup (xfree, name); |
f1838a98 | 1771 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1772 | bfd_errmsg (bfd_get_error ())); |
1773 | } | |
549c1eea | 1774 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1775 | |
1776 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1777 | { | |
f9a062ff | 1778 | make_cleanup_bfd_unref (sym_bfd); |
f1838a98 | 1779 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1780 | bfd_errmsg (bfd_get_error ())); |
1781 | } | |
cb2f3a29 MK |
1782 | |
1783 | return sym_bfd; | |
c906108c SS |
1784 | } |
1785 | ||
cb2f3a29 MK |
1786 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1787 | the section was not found. */ | |
1788 | ||
0e931cf0 JB |
1789 | int |
1790 | get_section_index (struct objfile *objfile, char *section_name) | |
1791 | { | |
1792 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1793 | |
0e931cf0 JB |
1794 | if (sect) |
1795 | return sect->index; | |
1796 | else | |
1797 | return -1; | |
1798 | } | |
1799 | ||
cb2f3a29 MK |
1800 | /* Link SF into the global symtab_fns list. Called on startup by the |
1801 | _initialize routine in each object file format reader, to register | |
b021a221 | 1802 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1803 | |
1804 | void | |
00b5771c | 1805 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1806 | { |
00b5771c | 1807 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1808 | } |
1809 | ||
cb2f3a29 MK |
1810 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1811 | either returns or calls error(). The result is an initialized | |
1812 | struct sym_fns in the objfile structure, that contains cached | |
1813 | information about the symbol file. */ | |
c906108c | 1814 | |
00b5771c | 1815 | static const struct sym_fns * |
31d99776 | 1816 | find_sym_fns (bfd *abfd) |
c906108c | 1817 | { |
00b5771c | 1818 | const struct sym_fns *sf; |
31d99776 | 1819 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1820 | int i; |
c906108c | 1821 | |
75245b24 MS |
1822 | if (our_flavour == bfd_target_srec_flavour |
1823 | || our_flavour == bfd_target_ihex_flavour | |
1824 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1825 | return NULL; /* No symbols. */ |
75245b24 | 1826 | |
00b5771c | 1827 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1828 | if (our_flavour == sf->sym_flavour) |
1829 | return sf; | |
cb2f3a29 | 1830 | |
8a3fe4f8 | 1831 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1832 | bfd_get_target (abfd)); |
c906108c SS |
1833 | } |
1834 | \f | |
cb2f3a29 | 1835 | |
c906108c SS |
1836 | /* This function runs the load command of our current target. */ |
1837 | ||
1838 | static void | |
fba45db2 | 1839 | load_command (char *arg, int from_tty) |
c906108c | 1840 | { |
e5cc9f32 JB |
1841 | dont_repeat (); |
1842 | ||
4487aabf PA |
1843 | /* The user might be reloading because the binary has changed. Take |
1844 | this opportunity to check. */ | |
1845 | reopen_exec_file (); | |
1846 | reread_symbols (); | |
1847 | ||
c906108c | 1848 | if (arg == NULL) |
1986bccd AS |
1849 | { |
1850 | char *parg; | |
1851 | int count = 0; | |
1852 | ||
1853 | parg = arg = get_exec_file (1); | |
1854 | ||
1855 | /* Count how many \ " ' tab space there are in the name. */ | |
1856 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1857 | { | |
1858 | parg++; | |
1859 | count++; | |
1860 | } | |
1861 | ||
1862 | if (count) | |
1863 | { | |
1864 | /* We need to quote this string so buildargv can pull it apart. */ | |
1865 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1866 | char *ptemp = temp; | |
1867 | char *prev; | |
1868 | ||
1869 | make_cleanup (xfree, temp); | |
1870 | ||
1871 | prev = parg = arg; | |
1872 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1873 | { | |
1874 | strncpy (ptemp, prev, parg - prev); | |
1875 | ptemp += parg - prev; | |
1876 | prev = parg++; | |
1877 | *ptemp++ = '\\'; | |
1878 | } | |
1879 | strcpy (ptemp, prev); | |
1880 | ||
1881 | arg = temp; | |
1882 | } | |
1883 | } | |
1884 | ||
c906108c | 1885 | target_load (arg, from_tty); |
2889e661 JB |
1886 | |
1887 | /* After re-loading the executable, we don't really know which | |
1888 | overlays are mapped any more. */ | |
1889 | overlay_cache_invalid = 1; | |
c906108c SS |
1890 | } |
1891 | ||
1892 | /* This version of "load" should be usable for any target. Currently | |
1893 | it is just used for remote targets, not inftarg.c or core files, | |
1894 | on the theory that only in that case is it useful. | |
1895 | ||
1896 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1897 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1898 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1899 | performance compares. */ | |
917317f4 | 1900 | |
917317f4 JM |
1901 | static int validate_download = 0; |
1902 | ||
e4f9b4d5 MS |
1903 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1904 | ||
1905 | static void | |
1906 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1907 | { | |
1908 | bfd_size_type *sum = data; | |
1909 | ||
2c500098 | 1910 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1911 | } |
1912 | ||
1913 | /* Opaque data for load_section_callback. */ | |
1914 | struct load_section_data { | |
1915 | unsigned long load_offset; | |
a76d924d DJ |
1916 | struct load_progress_data *progress_data; |
1917 | VEC(memory_write_request_s) *requests; | |
1918 | }; | |
1919 | ||
1920 | /* Opaque data for load_progress. */ | |
1921 | struct load_progress_data { | |
1922 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1923 | unsigned long write_count; |
1924 | unsigned long data_count; | |
1925 | bfd_size_type total_size; | |
a76d924d DJ |
1926 | }; |
1927 | ||
1928 | /* Opaque data for load_progress for a single section. */ | |
1929 | struct load_progress_section_data { | |
1930 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1931 | |
a76d924d | 1932 | /* Per-section data. */ |
cf7a04e8 DJ |
1933 | const char *section_name; |
1934 | ULONGEST section_sent; | |
1935 | ULONGEST section_size; | |
1936 | CORE_ADDR lma; | |
1937 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1938 | }; |
1939 | ||
a76d924d | 1940 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1941 | |
1942 | static void | |
1943 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1944 | { | |
a76d924d DJ |
1945 | struct load_progress_section_data *args = untyped_arg; |
1946 | struct load_progress_data *totals; | |
1947 | ||
1948 | if (args == NULL) | |
1949 | /* Writing padding data. No easy way to get at the cumulative | |
1950 | stats, so just ignore this. */ | |
1951 | return; | |
1952 | ||
1953 | totals = args->cumulative; | |
1954 | ||
1955 | if (bytes == 0 && args->section_sent == 0) | |
1956 | { | |
1957 | /* The write is just starting. Let the user know we've started | |
1958 | this section. */ | |
79a45e25 | 1959 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 UW |
1960 | args->section_name, hex_string (args->section_size), |
1961 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1962 | return; |
1963 | } | |
cf7a04e8 DJ |
1964 | |
1965 | if (validate_download) | |
1966 | { | |
1967 | /* Broken memories and broken monitors manifest themselves here | |
1968 | when bring new computers to life. This doubles already slow | |
1969 | downloads. */ | |
1970 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1971 | might add a verify_memory() method to the target vector and | |
1972 | then use that. remote.c could implement that method using | |
1973 | the ``qCRC'' packet. */ | |
1974 | gdb_byte *check = xmalloc (bytes); | |
1975 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1976 | ||
1977 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1978 | error (_("Download verify read failed at %s"), |
1979 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1980 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1981 | error (_("Download verify compare failed at %s"), |
1982 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1983 | do_cleanups (verify_cleanups); |
1984 | } | |
a76d924d | 1985 | totals->data_count += bytes; |
cf7a04e8 DJ |
1986 | args->lma += bytes; |
1987 | args->buffer += bytes; | |
a76d924d | 1988 | totals->write_count += 1; |
cf7a04e8 DJ |
1989 | args->section_sent += bytes; |
1990 | if (quit_flag | |
1991 | || (deprecated_ui_load_progress_hook != NULL | |
1992 | && deprecated_ui_load_progress_hook (args->section_name, | |
1993 | args->section_sent))) | |
1994 | error (_("Canceled the download")); | |
1995 | ||
1996 | if (deprecated_show_load_progress != NULL) | |
1997 | deprecated_show_load_progress (args->section_name, | |
1998 | args->section_sent, | |
1999 | args->section_size, | |
a76d924d DJ |
2000 | totals->data_count, |
2001 | totals->total_size); | |
cf7a04e8 DJ |
2002 | } |
2003 | ||
e4f9b4d5 MS |
2004 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2005 | ||
2006 | static void | |
2007 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2008 | { | |
a76d924d | 2009 | struct memory_write_request *new_request; |
e4f9b4d5 | 2010 | struct load_section_data *args = data; |
a76d924d | 2011 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
2012 | bfd_size_type size = bfd_get_section_size (asec); |
2013 | gdb_byte *buffer; | |
cf7a04e8 | 2014 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2015 | |
cf7a04e8 DJ |
2016 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2017 | return; | |
e4f9b4d5 | 2018 | |
cf7a04e8 DJ |
2019 | if (size == 0) |
2020 | return; | |
e4f9b4d5 | 2021 | |
a76d924d DJ |
2022 | new_request = VEC_safe_push (memory_write_request_s, |
2023 | args->requests, NULL); | |
2024 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
2025 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
2026 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
2027 | new_request->end = new_request->begin + size; /* FIXME Should size |
2028 | be in instead? */ | |
a76d924d DJ |
2029 | new_request->data = xmalloc (size); |
2030 | new_request->baton = section_data; | |
cf7a04e8 | 2031 | |
a76d924d | 2032 | buffer = new_request->data; |
cf7a04e8 | 2033 | |
a76d924d DJ |
2034 | section_data->cumulative = args->progress_data; |
2035 | section_data->section_name = sect_name; | |
2036 | section_data->section_size = size; | |
2037 | section_data->lma = new_request->begin; | |
2038 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2039 | |
2040 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2041 | } |
2042 | ||
2043 | /* Clean up an entire memory request vector, including load | |
2044 | data and progress records. */ | |
cf7a04e8 | 2045 | |
a76d924d DJ |
2046 | static void |
2047 | clear_memory_write_data (void *arg) | |
2048 | { | |
2049 | VEC(memory_write_request_s) **vec_p = arg; | |
2050 | VEC(memory_write_request_s) *vec = *vec_p; | |
2051 | int i; | |
2052 | struct memory_write_request *mr; | |
cf7a04e8 | 2053 | |
a76d924d DJ |
2054 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2055 | { | |
2056 | xfree (mr->data); | |
2057 | xfree (mr->baton); | |
2058 | } | |
2059 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2060 | } |
2061 | ||
c906108c | 2062 | void |
917317f4 | 2063 | generic_load (char *args, int from_tty) |
c906108c | 2064 | { |
c906108c | 2065 | bfd *loadfile_bfd; |
2b71414d | 2066 | struct timeval start_time, end_time; |
917317f4 | 2067 | char *filename; |
1986bccd | 2068 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2069 | struct load_section_data cbdata; |
a76d924d | 2070 | struct load_progress_data total_progress; |
79a45e25 | 2071 | struct ui_out *uiout = current_uiout; |
a76d924d | 2072 | |
e4f9b4d5 | 2073 | CORE_ADDR entry; |
1986bccd | 2074 | char **argv; |
e4f9b4d5 | 2075 | |
a76d924d DJ |
2076 | memset (&cbdata, 0, sizeof (cbdata)); |
2077 | memset (&total_progress, 0, sizeof (total_progress)); | |
2078 | cbdata.progress_data = &total_progress; | |
2079 | ||
2080 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2081 | |
d1a41061 PP |
2082 | if (args == NULL) |
2083 | error_no_arg (_("file to load")); | |
1986bccd | 2084 | |
d1a41061 | 2085 | argv = gdb_buildargv (args); |
1986bccd AS |
2086 | make_cleanup_freeargv (argv); |
2087 | ||
2088 | filename = tilde_expand (argv[0]); | |
2089 | make_cleanup (xfree, filename); | |
2090 | ||
2091 | if (argv[1] != NULL) | |
917317f4 JM |
2092 | { |
2093 | char *endptr; | |
ba5f2f8a | 2094 | |
1986bccd AS |
2095 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
2096 | ||
2097 | /* If the last word was not a valid number then | |
2098 | treat it as a file name with spaces in. */ | |
2099 | if (argv[1] == endptr) | |
2100 | error (_("Invalid download offset:%s."), argv[1]); | |
2101 | ||
2102 | if (argv[2] != NULL) | |
2103 | error (_("Too many parameters.")); | |
917317f4 | 2104 | } |
c906108c | 2105 | |
c378eb4e | 2106 | /* Open the file for loading. */ |
64c31149 | 2107 | loadfile_bfd = gdb_bfd_openr (filename, gnutarget); |
c906108c SS |
2108 | if (loadfile_bfd == NULL) |
2109 | { | |
2110 | perror_with_name (filename); | |
2111 | return; | |
2112 | } | |
917317f4 | 2113 | |
f9a062ff | 2114 | make_cleanup_bfd_unref (loadfile_bfd); |
c906108c | 2115 | |
c5aa993b | 2116 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2117 | { |
8a3fe4f8 | 2118 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2119 | bfd_errmsg (bfd_get_error ())); |
2120 | } | |
c5aa993b | 2121 | |
5417f6dc | 2122 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2123 | (void *) &total_progress.total_size); |
2124 | ||
2125 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2126 | |
2b71414d | 2127 | gettimeofday (&start_time, NULL); |
c906108c | 2128 | |
a76d924d DJ |
2129 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2130 | load_progress) != 0) | |
2131 | error (_("Load failed")); | |
c906108c | 2132 | |
2b71414d | 2133 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2134 | |
e4f9b4d5 | 2135 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2136 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2137 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2138 | ui_out_text (uiout, ", load size "); |
a76d924d | 2139 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2140 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2141 | /* We were doing this in remote-mips.c, I suspect it is right |
2142 | for other targets too. */ | |
fb14de7b | 2143 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2144 | |
38963c97 DJ |
2145 | /* Reset breakpoints, now that we have changed the load image. For |
2146 | instance, breakpoints may have been set (or reset, by | |
2147 | post_create_inferior) while connected to the target but before we | |
2148 | loaded the program. In that case, the prologue analyzer could | |
2149 | have read instructions from the target to find the right | |
2150 | breakpoint locations. Loading has changed the contents of that | |
2151 | memory. */ | |
2152 | ||
2153 | breakpoint_re_set (); | |
2154 | ||
7ca9f392 AC |
2155 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2156 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2157 | was commented out), making the call confuses GDB if more than one | |
2158 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2159 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2160 | |
a76d924d DJ |
2161 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2162 | total_progress.write_count, | |
2163 | &start_time, &end_time); | |
c906108c SS |
2164 | |
2165 | do_cleanups (old_cleanups); | |
2166 | } | |
2167 | ||
c378eb4e | 2168 | /* Report how fast the transfer went. */ |
c906108c | 2169 | |
917317f4 JM |
2170 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2171 | replaced by print_transfer_performance (with a very different | |
c378eb4e | 2172 | function signature). */ |
917317f4 | 2173 | |
c906108c | 2174 | void |
fba45db2 KB |
2175 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2176 | time_t end_time) | |
c906108c | 2177 | { |
2b71414d DJ |
2178 | struct timeval start, end; |
2179 | ||
2180 | start.tv_sec = start_time; | |
2181 | start.tv_usec = 0; | |
2182 | end.tv_sec = end_time; | |
2183 | end.tv_usec = 0; | |
2184 | ||
2185 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2186 | } |
2187 | ||
2188 | void | |
d9fcf2fb | 2189 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2190 | unsigned long data_count, |
2191 | unsigned long write_count, | |
2b71414d DJ |
2192 | const struct timeval *start_time, |
2193 | const struct timeval *end_time) | |
917317f4 | 2194 | { |
9f43d28c | 2195 | ULONGEST time_count; |
79a45e25 | 2196 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2197 | |
2198 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2199 | accuracy and overflow. */ | |
2200 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2201 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2202 | ||
8b93c638 JM |
2203 | ui_out_text (uiout, "Transfer rate: "); |
2204 | if (time_count > 0) | |
2205 | { | |
9f43d28c DJ |
2206 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2207 | ||
2208 | if (ui_out_is_mi_like_p (uiout)) | |
2209 | { | |
2210 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2211 | ui_out_text (uiout, " bits/sec"); | |
2212 | } | |
2213 | else if (rate < 1024) | |
2214 | { | |
2215 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2216 | ui_out_text (uiout, " bytes/sec"); | |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2221 | ui_out_text (uiout, " KB/sec"); | |
2222 | } | |
8b93c638 JM |
2223 | } |
2224 | else | |
2225 | { | |
ba5f2f8a | 2226 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2227 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2228 | } |
2229 | if (write_count > 0) | |
2230 | { | |
2231 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2232 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2233 | ui_out_text (uiout, " bytes/write"); |
2234 | } | |
2235 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2236 | } |
2237 | ||
2238 | /* This function allows the addition of incrementally linked object files. | |
2239 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2240 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2241 | special case syntax for the rombug target (Rombug is the boot | |
2242 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2243 | rombug case, the user doesn't need to supply a text address, | |
2244 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2245 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2246 | |
c906108c | 2247 | static void |
fba45db2 | 2248 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2249 | { |
5af949e3 | 2250 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2251 | char *filename = NULL; |
2df3850c | 2252 | int flags = OBJF_USERLOADED; |
c906108c | 2253 | char *arg; |
db162d44 | 2254 | int section_index = 0; |
2acceee2 JM |
2255 | int argcnt = 0; |
2256 | int sec_num = 0; | |
2257 | int i; | |
db162d44 EZ |
2258 | int expecting_sec_name = 0; |
2259 | int expecting_sec_addr = 0; | |
5b96932b | 2260 | char **argv; |
db162d44 | 2261 | |
a39a16c4 | 2262 | struct sect_opt |
2acceee2 | 2263 | { |
2acceee2 JM |
2264 | char *name; |
2265 | char *value; | |
a39a16c4 | 2266 | }; |
db162d44 | 2267 | |
a39a16c4 MM |
2268 | struct section_addr_info *section_addrs; |
2269 | struct sect_opt *sect_opts = NULL; | |
2270 | size_t num_sect_opts = 0; | |
3017564a | 2271 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2272 | |
a39a16c4 | 2273 | num_sect_opts = 16; |
5417f6dc | 2274 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2275 | * sizeof (struct sect_opt)); |
2276 | ||
c906108c SS |
2277 | dont_repeat (); |
2278 | ||
2279 | if (args == NULL) | |
8a3fe4f8 | 2280 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2281 | |
d1a41061 | 2282 | argv = gdb_buildargv (args); |
5b96932b | 2283 | make_cleanup_freeargv (argv); |
db162d44 | 2284 | |
5b96932b AS |
2285 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2286 | { | |
c378eb4e | 2287 | /* Process the argument. */ |
db162d44 | 2288 | if (argcnt == 0) |
c906108c | 2289 | { |
c378eb4e | 2290 | /* The first argument is the file name. */ |
db162d44 | 2291 | filename = tilde_expand (arg); |
3017564a | 2292 | make_cleanup (xfree, filename); |
c906108c | 2293 | } |
db162d44 | 2294 | else |
7a78ae4e ND |
2295 | if (argcnt == 1) |
2296 | { | |
2297 | /* The second argument is always the text address at which | |
c378eb4e | 2298 | to load the program. */ |
7a78ae4e ND |
2299 | sect_opts[section_index].name = ".text"; |
2300 | sect_opts[section_index].value = arg; | |
f414f22f | 2301 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2302 | { |
2303 | num_sect_opts *= 2; | |
5417f6dc | 2304 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2305 | xrealloc (sect_opts, |
5417f6dc | 2306 | num_sect_opts |
a39a16c4 MM |
2307 | * sizeof (struct sect_opt))); |
2308 | } | |
7a78ae4e ND |
2309 | } |
2310 | else | |
2311 | { | |
2312 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2313 | to an option. */ |
7a78ae4e ND |
2314 | |
2315 | if (*arg == '-') | |
2316 | { | |
78a4a9b9 AC |
2317 | if (strcmp (arg, "-readnow") == 0) |
2318 | flags |= OBJF_READNOW; | |
2319 | else if (strcmp (arg, "-s") == 0) | |
2320 | { | |
2321 | expecting_sec_name = 1; | |
2322 | expecting_sec_addr = 1; | |
2323 | } | |
7a78ae4e ND |
2324 | } |
2325 | else | |
2326 | { | |
2327 | if (expecting_sec_name) | |
db162d44 | 2328 | { |
7a78ae4e ND |
2329 | sect_opts[section_index].name = arg; |
2330 | expecting_sec_name = 0; | |
db162d44 EZ |
2331 | } |
2332 | else | |
7a78ae4e ND |
2333 | if (expecting_sec_addr) |
2334 | { | |
2335 | sect_opts[section_index].value = arg; | |
2336 | expecting_sec_addr = 0; | |
f414f22f | 2337 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2338 | { |
2339 | num_sect_opts *= 2; | |
5417f6dc | 2340 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2341 | xrealloc (sect_opts, |
5417f6dc | 2342 | num_sect_opts |
a39a16c4 MM |
2343 | * sizeof (struct sect_opt))); |
2344 | } | |
7a78ae4e ND |
2345 | } |
2346 | else | |
3e43a32a | 2347 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2348 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2349 | } |
2350 | } | |
c906108c | 2351 | } |
c906108c | 2352 | |
927890d0 JB |
2353 | /* This command takes at least two arguments. The first one is a |
2354 | filename, and the second is the address where this file has been | |
2355 | loaded. Abort now if this address hasn't been provided by the | |
2356 | user. */ | |
2357 | if (section_index < 1) | |
2358 | error (_("The address where %s has been loaded is missing"), filename); | |
2359 | ||
c378eb4e | 2360 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2361 | a sect_addr_info structure to be passed around to other |
2362 | functions. We have to split this up into separate print | |
bb599908 | 2363 | statements because hex_string returns a local static |
c378eb4e | 2364 | string. */ |
5417f6dc | 2365 | |
a3f17187 | 2366 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2367 | section_addrs = alloc_section_addr_info (section_index); |
2368 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2369 | for (i = 0; i < section_index; i++) |
c906108c | 2370 | { |
db162d44 EZ |
2371 | CORE_ADDR addr; |
2372 | char *val = sect_opts[i].value; | |
2373 | char *sec = sect_opts[i].name; | |
5417f6dc | 2374 | |
ae822768 | 2375 | addr = parse_and_eval_address (val); |
db162d44 | 2376 | |
db162d44 | 2377 | /* Here we store the section offsets in the order they were |
c378eb4e | 2378 | entered on the command line. */ |
a39a16c4 MM |
2379 | section_addrs->other[sec_num].name = sec; |
2380 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2381 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2382 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2383 | sec_num++; |
2384 | ||
5417f6dc | 2385 | /* The object's sections are initialized when a |
db162d44 | 2386 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2387 | This happens in reread_symbols. |
db162d44 EZ |
2388 | At this point, we don't know what file type this is, |
2389 | so we can't determine what section names are valid. */ | |
2acceee2 | 2390 | } |
db162d44 | 2391 | |
2acceee2 | 2392 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2393 | error (_("Not confirmed.")); |
c906108c | 2394 | |
7eedccfa PP |
2395 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2396 | section_addrs, flags); | |
c906108c SS |
2397 | |
2398 | /* Getting new symbols may change our opinion about what is | |
2399 | frameless. */ | |
2400 | reinit_frame_cache (); | |
db162d44 | 2401 | do_cleanups (my_cleanups); |
c906108c SS |
2402 | } |
2403 | \f | |
70992597 | 2404 | |
4ac39b97 JK |
2405 | typedef struct objfile *objfilep; |
2406 | ||
2407 | DEF_VEC_P (objfilep); | |
2408 | ||
c906108c SS |
2409 | /* Re-read symbols if a symbol-file has changed. */ |
2410 | void | |
fba45db2 | 2411 | reread_symbols (void) |
c906108c SS |
2412 | { |
2413 | struct objfile *objfile; | |
2414 | long new_modtime; | |
c906108c SS |
2415 | struct stat new_statbuf; |
2416 | int res; | |
4ac39b97 JK |
2417 | VEC (objfilep) *new_objfiles = NULL; |
2418 | struct cleanup *all_cleanups; | |
2419 | ||
2420 | all_cleanups = make_cleanup (VEC_cleanup (objfilep), &new_objfiles); | |
c906108c SS |
2421 | |
2422 | /* With the addition of shared libraries, this should be modified, | |
2423 | the load time should be saved in the partial symbol tables, since | |
2424 | different tables may come from different source files. FIXME. | |
2425 | This routine should then walk down each partial symbol table | |
c378eb4e | 2426 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2427 | |
c5aa993b JM |
2428 | for (objfile = object_files; objfile; objfile = objfile->next) |
2429 | { | |
9cce227f TG |
2430 | /* solib-sunos.c creates one objfile with obfd. */ |
2431 | if (objfile->obfd == NULL) | |
2432 | continue; | |
2433 | ||
2434 | /* Separate debug objfiles are handled in the main objfile. */ | |
2435 | if (objfile->separate_debug_objfile_backlink) | |
2436 | continue; | |
2437 | ||
02aeec7b JB |
2438 | /* If this object is from an archive (what you usually create with |
2439 | `ar', often called a `static library' on most systems, though | |
2440 | a `shared library' on AIX is also an archive), then you should | |
2441 | stat on the archive name, not member name. */ | |
9cce227f TG |
2442 | if (objfile->obfd->my_archive) |
2443 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2444 | else | |
9cce227f TG |
2445 | res = stat (objfile->name, &new_statbuf); |
2446 | if (res != 0) | |
2447 | { | |
c378eb4e | 2448 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2449 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2450 | objfile->name); | |
2451 | continue; | |
2452 | } | |
2453 | new_modtime = new_statbuf.st_mtime; | |
2454 | if (new_modtime != objfile->mtime) | |
2455 | { | |
2456 | struct cleanup *old_cleanups; | |
2457 | struct section_offsets *offsets; | |
2458 | int num_offsets; | |
2459 | char *obfd_filename; | |
2460 | ||
2461 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2462 | objfile->name); | |
2463 | ||
2464 | /* There are various functions like symbol_file_add, | |
2465 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2466 | appear to do what we want. But they have various other | |
2467 | effects which we *don't* want. So we just do stuff | |
2468 | ourselves. We don't worry about mapped files (for one thing, | |
2469 | any mapped file will be out of date). */ | |
2470 | ||
2471 | /* If we get an error, blow away this objfile (not sure if | |
2472 | that is the correct response for things like shared | |
2473 | libraries). */ | |
2474 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2475 | /* We need to do this whenever any symbols go away. */ | |
2476 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2477 | ||
0ba1096a KT |
2478 | if (exec_bfd != NULL |
2479 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2480 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2481 | { |
2482 | /* Reload EXEC_BFD without asking anything. */ | |
2483 | ||
2484 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2485 | } | |
2486 | ||
f6eeced0 JK |
2487 | /* Keep the calls order approx. the same as in free_objfile. */ |
2488 | ||
2489 | /* Free the separate debug objfiles. It will be | |
2490 | automatically recreated by sym_read. */ | |
2491 | free_objfile_separate_debug (objfile); | |
2492 | ||
2493 | /* Remove any references to this objfile in the global | |
2494 | value lists. */ | |
2495 | preserve_values (objfile); | |
2496 | ||
2497 | /* Nuke all the state that we will re-read. Much of the following | |
2498 | code which sets things to NULL really is necessary to tell | |
2499 | other parts of GDB that there is nothing currently there. | |
2500 | ||
2501 | Try to keep the freeing order compatible with free_objfile. */ | |
2502 | ||
2503 | if (objfile->sf != NULL) | |
2504 | { | |
2505 | (*objfile->sf->sym_finish) (objfile); | |
2506 | } | |
2507 | ||
2508 | clear_objfile_data (objfile); | |
2509 | ||
9cce227f TG |
2510 | /* Clean up any state BFD has sitting around. We don't need |
2511 | to close the descriptor but BFD lacks a way of closing the | |
2512 | BFD without closing the descriptor. */ | |
a4453b7e TT |
2513 | { |
2514 | struct bfd *obfd = objfile->obfd; | |
2515 | ||
2516 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2517 | /* Open the new BFD before freeing the old one, so that | |
2518 | the filename remains live. */ | |
08d2cd74 | 2519 | objfile->obfd = gdb_bfd_open_maybe_remote (obfd_filename); |
a4453b7e TT |
2520 | gdb_bfd_unref (obfd); |
2521 | } | |
2522 | ||
9cce227f TG |
2523 | if (objfile->obfd == NULL) |
2524 | error (_("Can't open %s to read symbols."), objfile->name); | |
9cce227f TG |
2525 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2526 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2527 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2528 | bfd_errmsg (bfd_get_error ())); | |
2529 | ||
2530 | /* Save the offsets, we will nuke them with the rest of the | |
2531 | objfile_obstack. */ | |
2532 | num_offsets = objfile->num_sections; | |
2533 | offsets = ((struct section_offsets *) | |
2534 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2535 | memcpy (offsets, objfile->section_offsets, | |
2536 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2537 | ||
9cce227f TG |
2538 | /* FIXME: Do we have to free a whole linked list, or is this |
2539 | enough? */ | |
2540 | if (objfile->global_psymbols.list) | |
2541 | xfree (objfile->global_psymbols.list); | |
2542 | memset (&objfile->global_psymbols, 0, | |
2543 | sizeof (objfile->global_psymbols)); | |
2544 | if (objfile->static_psymbols.list) | |
2545 | xfree (objfile->static_psymbols.list); | |
2546 | memset (&objfile->static_psymbols, 0, | |
2547 | sizeof (objfile->static_psymbols)); | |
2548 | ||
c378eb4e | 2549 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2550 | psymbol_bcache_free (objfile->psymbol_cache); |
2551 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f | 2552 | bcache_xfree (objfile->macro_cache); |
cbd70537 | 2553 | objfile->macro_cache = bcache_xmalloc (NULL, NULL); |
9cce227f | 2554 | bcache_xfree (objfile->filename_cache); |
cbd70537 | 2555 | objfile->filename_cache = bcache_xmalloc (NULL,NULL); |
9cce227f TG |
2556 | if (objfile->demangled_names_hash != NULL) |
2557 | { | |
2558 | htab_delete (objfile->demangled_names_hash); | |
2559 | objfile->demangled_names_hash = NULL; | |
2560 | } | |
2561 | obstack_free (&objfile->objfile_obstack, 0); | |
2562 | objfile->sections = NULL; | |
2563 | objfile->symtabs = NULL; | |
2564 | objfile->psymtabs = NULL; | |
2565 | objfile->psymtabs_addrmap = NULL; | |
2566 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2567 | objfile->template_symbols = NULL; |
9cce227f TG |
2568 | objfile->msymbols = NULL; |
2569 | objfile->deprecated_sym_private = NULL; | |
2570 | objfile->minimal_symbol_count = 0; | |
2571 | memset (&objfile->msymbol_hash, 0, | |
2572 | sizeof (objfile->msymbol_hash)); | |
2573 | memset (&objfile->msymbol_demangled_hash, 0, | |
2574 | sizeof (objfile->msymbol_demangled_hash)); | |
2575 | ||
9cce227f TG |
2576 | /* obstack_init also initializes the obstack so it is |
2577 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2578 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2579 | obstack_init (&objfile->objfile_obstack); |
d82ea6a8 | 2580 | build_objfile_section_table (objfile); |
9cce227f TG |
2581 | terminate_minimal_symbol_table (objfile); |
2582 | ||
2583 | /* We use the same section offsets as from last time. I'm not | |
2584 | sure whether that is always correct for shared libraries. */ | |
2585 | objfile->section_offsets = (struct section_offsets *) | |
2586 | obstack_alloc (&objfile->objfile_obstack, | |
2587 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2588 | memcpy (objfile->section_offsets, offsets, | |
2589 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2590 | objfile->num_sections = num_offsets; | |
2591 | ||
2592 | /* What the hell is sym_new_init for, anyway? The concept of | |
2593 | distinguishing between the main file and additional files | |
2594 | in this way seems rather dubious. */ | |
2595 | if (objfile == symfile_objfile) | |
c906108c | 2596 | { |
9cce227f | 2597 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2598 | } |
9cce227f TG |
2599 | |
2600 | (*objfile->sf->sym_init) (objfile); | |
2601 | clear_complaints (&symfile_complaints, 1, 1); | |
2602 | /* Do not set flags as this is safe and we don't want to be | |
2603 | verbose. */ | |
2604 | (*objfile->sf->sym_read) (objfile, 0); | |
b11896a5 TT |
2605 | if ((objfile->flags & OBJF_PSYMTABS_READ) != 0) |
2606 | { | |
2607 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2608 | require_partial_symbols (objfile, 0); | |
2609 | } | |
2610 | ||
9cce227f | 2611 | if (!objfile_has_symbols (objfile)) |
c906108c | 2612 | { |
9cce227f TG |
2613 | wrap_here (""); |
2614 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2615 | wrap_here (""); | |
c5aa993b | 2616 | } |
9cce227f TG |
2617 | |
2618 | /* We're done reading the symbol file; finish off complaints. */ | |
2619 | clear_complaints (&symfile_complaints, 0, 1); | |
2620 | ||
2621 | /* Getting new symbols may change our opinion about what is | |
2622 | frameless. */ | |
2623 | ||
2624 | reinit_frame_cache (); | |
2625 | ||
2626 | /* Discard cleanups as symbol reading was successful. */ | |
2627 | discard_cleanups (old_cleanups); | |
2628 | ||
2629 | /* If the mtime has changed between the time we set new_modtime | |
2630 | and now, we *want* this to be out of date, so don't call stat | |
2631 | again now. */ | |
2632 | objfile->mtime = new_modtime; | |
9cce227f | 2633 | init_entry_point_info (objfile); |
4ac39b97 JK |
2634 | |
2635 | VEC_safe_push (objfilep, new_objfiles, objfile); | |
c906108c SS |
2636 | } |
2637 | } | |
c906108c | 2638 | |
4ac39b97 | 2639 | if (new_objfiles) |
ea53e89f | 2640 | { |
4ac39b97 JK |
2641 | int ix; |
2642 | ||
ff3536bc UW |
2643 | /* Notify objfiles that we've modified objfile sections. */ |
2644 | objfiles_changed (); | |
2645 | ||
c1e56572 | 2646 | clear_symtab_users (0); |
4ac39b97 JK |
2647 | |
2648 | /* clear_objfile_data for each objfile was called before freeing it and | |
2649 | observer_notify_new_objfile (NULL) has been called by | |
2650 | clear_symtab_users above. Notify the new files now. */ | |
2651 | for (ix = 0; VEC_iterate (objfilep, new_objfiles, ix, objfile); ix++) | |
2652 | observer_notify_new_objfile (objfile); | |
2653 | ||
ea53e89f JB |
2654 | /* At least one objfile has changed, so we can consider that |
2655 | the executable we're debugging has changed too. */ | |
781b42b0 | 2656 | observer_notify_executable_changed (); |
ea53e89f | 2657 | } |
4ac39b97 JK |
2658 | |
2659 | do_cleanups (all_cleanups); | |
c906108c | 2660 | } |
c906108c SS |
2661 | \f |
2662 | ||
c5aa993b JM |
2663 | |
2664 | typedef struct | |
2665 | { | |
2666 | char *ext; | |
c906108c | 2667 | enum language lang; |
c5aa993b JM |
2668 | } |
2669 | filename_language; | |
c906108c | 2670 | |
c5aa993b | 2671 | static filename_language *filename_language_table; |
c906108c SS |
2672 | static int fl_table_size, fl_table_next; |
2673 | ||
2674 | static void | |
fba45db2 | 2675 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2676 | { |
2677 | if (fl_table_next >= fl_table_size) | |
2678 | { | |
2679 | fl_table_size += 10; | |
5417f6dc | 2680 | filename_language_table = |
25bf3106 PM |
2681 | xrealloc (filename_language_table, |
2682 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2683 | } |
2684 | ||
4fcf66da | 2685 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2686 | filename_language_table[fl_table_next].lang = lang; |
2687 | fl_table_next++; | |
2688 | } | |
2689 | ||
2690 | static char *ext_args; | |
920d2a44 AC |
2691 | static void |
2692 | show_ext_args (struct ui_file *file, int from_tty, | |
2693 | struct cmd_list_element *c, const char *value) | |
2694 | { | |
3e43a32a MS |
2695 | fprintf_filtered (file, |
2696 | _("Mapping between filename extension " | |
2697 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2698 | value); |
2699 | } | |
c906108c SS |
2700 | |
2701 | static void | |
26c41df3 | 2702 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2703 | { |
2704 | int i; | |
2705 | char *cp = ext_args; | |
2706 | enum language lang; | |
2707 | ||
c378eb4e | 2708 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2709 | if (*cp != '.') |
8a3fe4f8 | 2710 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2711 | |
2712 | /* Find end of first arg. */ | |
c5aa993b | 2713 | while (*cp && !isspace (*cp)) |
c906108c SS |
2714 | cp++; |
2715 | ||
2716 | if (*cp == '\0') | |
3e43a32a MS |
2717 | error (_("'%s': two arguments required -- " |
2718 | "filename extension and language"), | |
c906108c SS |
2719 | ext_args); |
2720 | ||
c378eb4e | 2721 | /* Null-terminate first arg. */ |
c5aa993b | 2722 | *cp++ = '\0'; |
c906108c SS |
2723 | |
2724 | /* Find beginning of second arg, which should be a source language. */ | |
2725 | while (*cp && isspace (*cp)) | |
2726 | cp++; | |
2727 | ||
2728 | if (*cp == '\0') | |
3e43a32a MS |
2729 | error (_("'%s': two arguments required -- " |
2730 | "filename extension and language"), | |
c906108c SS |
2731 | ext_args); |
2732 | ||
2733 | /* Lookup the language from among those we know. */ | |
2734 | lang = language_enum (cp); | |
2735 | ||
2736 | /* Now lookup the filename extension: do we already know it? */ | |
2737 | for (i = 0; i < fl_table_next; i++) | |
2738 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2739 | break; | |
2740 | ||
2741 | if (i >= fl_table_next) | |
2742 | { | |
c378eb4e | 2743 | /* New file extension. */ |
c906108c SS |
2744 | add_filename_language (ext_args, lang); |
2745 | } | |
2746 | else | |
2747 | { | |
c378eb4e | 2748 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2749 | |
2750 | /* if (from_tty) */ | |
2751 | /* query ("Really make files of type %s '%s'?", */ | |
2752 | /* ext_args, language_str (lang)); */ | |
2753 | ||
b8c9b27d | 2754 | xfree (filename_language_table[i].ext); |
4fcf66da | 2755 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2756 | filename_language_table[i].lang = lang; |
2757 | } | |
2758 | } | |
2759 | ||
2760 | static void | |
fba45db2 | 2761 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2762 | { |
2763 | int i; | |
2764 | ||
a3f17187 | 2765 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2766 | printf_filtered ("\n\n"); |
2767 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2768 | printf_filtered ("\t%s\t- %s\n", |
2769 | filename_language_table[i].ext, | |
c906108c SS |
2770 | language_str (filename_language_table[i].lang)); |
2771 | } | |
2772 | ||
2773 | static void | |
fba45db2 | 2774 | init_filename_language_table (void) |
c906108c | 2775 | { |
c378eb4e | 2776 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2777 | { |
2778 | fl_table_size = 20; | |
2779 | fl_table_next = 0; | |
c5aa993b | 2780 | filename_language_table = |
c906108c | 2781 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2782 | add_filename_language (".c", language_c); |
6aecb9c2 | 2783 | add_filename_language (".d", language_d); |
c5aa993b JM |
2784 | add_filename_language (".C", language_cplus); |
2785 | add_filename_language (".cc", language_cplus); | |
2786 | add_filename_language (".cp", language_cplus); | |
2787 | add_filename_language (".cpp", language_cplus); | |
2788 | add_filename_language (".cxx", language_cplus); | |
2789 | add_filename_language (".c++", language_cplus); | |
2790 | add_filename_language (".java", language_java); | |
c906108c | 2791 | add_filename_language (".class", language_java); |
da2cf7e0 | 2792 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2793 | add_filename_language (".f", language_fortran); |
2794 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2795 | add_filename_language (".for", language_fortran); |
2796 | add_filename_language (".FOR", language_fortran); | |
2797 | add_filename_language (".ftn", language_fortran); | |
2798 | add_filename_language (".FTN", language_fortran); | |
2799 | add_filename_language (".fpp", language_fortran); | |
2800 | add_filename_language (".FPP", language_fortran); | |
2801 | add_filename_language (".f90", language_fortran); | |
2802 | add_filename_language (".F90", language_fortran); | |
2803 | add_filename_language (".f95", language_fortran); | |
2804 | add_filename_language (".F95", language_fortran); | |
2805 | add_filename_language (".f03", language_fortran); | |
2806 | add_filename_language (".F03", language_fortran); | |
2807 | add_filename_language (".f08", language_fortran); | |
2808 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2809 | add_filename_language (".s", language_asm); |
aa707ed0 | 2810 | add_filename_language (".sx", language_asm); |
c5aa993b | 2811 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2812 | add_filename_language (".pas", language_pascal); |
2813 | add_filename_language (".p", language_pascal); | |
2814 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2815 | add_filename_language (".adb", language_ada); |
2816 | add_filename_language (".ads", language_ada); | |
2817 | add_filename_language (".a", language_ada); | |
2818 | add_filename_language (".ada", language_ada); | |
dde59185 | 2819 | add_filename_language (".dg", language_ada); |
c906108c SS |
2820 | } |
2821 | } | |
2822 | ||
2823 | enum language | |
dd786858 | 2824 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2825 | { |
2826 | int i; | |
2827 | char *cp; | |
2828 | ||
2829 | if (filename != NULL) | |
2830 | if ((cp = strrchr (filename, '.')) != NULL) | |
2831 | for (i = 0; i < fl_table_next; i++) | |
2832 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2833 | return filename_language_table[i].lang; | |
2834 | ||
2835 | return language_unknown; | |
2836 | } | |
2837 | \f | |
2838 | /* allocate_symtab: | |
2839 | ||
2840 | Allocate and partly initialize a new symbol table. Return a pointer | |
2841 | to it. error() if no space. | |
2842 | ||
2843 | Caller must set these fields: | |
c5aa993b JM |
2844 | LINETABLE(symtab) |
2845 | symtab->blockvector | |
2846 | symtab->dirname | |
2847 | symtab->free_code | |
2848 | symtab->free_ptr | |
c906108c SS |
2849 | */ |
2850 | ||
2851 | struct symtab * | |
72b9f47f | 2852 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2853 | { |
52f0bd74 | 2854 | struct symtab *symtab; |
c906108c SS |
2855 | |
2856 | symtab = (struct symtab *) | |
4a146b47 | 2857 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2858 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2859 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2860 | objfile->filename_cache); | |
c5aa993b JM |
2861 | symtab->fullname = NULL; |
2862 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2863 | symtab->debugformat = "unknown"; |
c906108c | 2864 | |
c378eb4e | 2865 | /* Hook it to the objfile it comes from. */ |
c906108c | 2866 | |
c5aa993b JM |
2867 | symtab->objfile = objfile; |
2868 | symtab->next = objfile->symtabs; | |
2869 | objfile->symtabs = symtab; | |
c906108c | 2870 | |
45cfd468 DE |
2871 | if (symtab_create_debug) |
2872 | { | |
2873 | /* Be a bit clever with debugging messages, and don't print objfile | |
2874 | every time, only when it changes. */ | |
2875 | static char *last_objfile_name = NULL; | |
2876 | ||
2877 | if (last_objfile_name == NULL | |
2878 | || strcmp (last_objfile_name, objfile->name) != 0) | |
2879 | { | |
2880 | xfree (last_objfile_name); | |
2881 | last_objfile_name = xstrdup (objfile->name); | |
2882 | fprintf_unfiltered (gdb_stdlog, | |
2883 | "Creating one or more symtabs for objfile %s ...\n", | |
2884 | last_objfile_name); | |
2885 | } | |
2886 | fprintf_unfiltered (gdb_stdlog, | |
2887 | "Created symtab 0x%lx for module %s.\n", | |
2888 | (long) symtab, filename); | |
2889 | } | |
2890 | ||
c906108c SS |
2891 | return (symtab); |
2892 | } | |
c906108c | 2893 | \f |
c5aa993b | 2894 | |
c906108c | 2895 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2896 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2897 | |
2898 | void | |
c1e56572 | 2899 | clear_symtab_users (int add_flags) |
c906108c SS |
2900 | { |
2901 | /* Someday, we should do better than this, by only blowing away | |
2902 | the things that really need to be blown. */ | |
c0501be5 DJ |
2903 | |
2904 | /* Clear the "current" symtab first, because it is no longer valid. | |
2905 | breakpoint_re_set may try to access the current symtab. */ | |
2906 | clear_current_source_symtab_and_line (); | |
2907 | ||
c906108c | 2908 | clear_displays (); |
c1e56572 JK |
2909 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2910 | breakpoint_re_set (); | |
1bfeeb0f | 2911 | clear_last_displayed_sal (); |
c906108c | 2912 | clear_pc_function_cache (); |
06d3b283 | 2913 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2914 | |
2915 | /* Clear globals which might have pointed into a removed objfile. | |
2916 | FIXME: It's not clear which of these are supposed to persist | |
2917 | between expressions and which ought to be reset each time. */ | |
2918 | expression_context_block = NULL; | |
2919 | innermost_block = NULL; | |
8756216b DP |
2920 | |
2921 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2922 | varobj_invalidate (); | |
2923 | ||
c906108c SS |
2924 | } |
2925 | ||
74b7792f AC |
2926 | static void |
2927 | clear_symtab_users_cleanup (void *ignore) | |
2928 | { | |
c1e56572 | 2929 | clear_symtab_users (0); |
74b7792f | 2930 | } |
c906108c | 2931 | \f |
c906108c SS |
2932 | /* OVERLAYS: |
2933 | The following code implements an abstraction for debugging overlay sections. | |
2934 | ||
2935 | The target model is as follows: | |
2936 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2937 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2938 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2939 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2940 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2941 | sections should be considered to be mapped from the VMA to the LMA. |
2942 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2943 | For instance, if a section has been mapped then its contents |
c5aa993b | 2944 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2945 | |
2946 | Two levels of debugger support for overlays are available. One is | |
2947 | "manual", in which the debugger relies on the user to tell it which | |
2948 | overlays are currently mapped. This level of support is | |
2949 | implemented entirely in the core debugger, and the information about | |
2950 | whether a section is mapped is kept in the objfile->obj_section table. | |
2951 | ||
2952 | The second level of support is "automatic", and is only available if | |
2953 | the target-specific code provides functionality to read the target's | |
2954 | overlay mapping table, and translate its contents for the debugger | |
2955 | (by updating the mapped state information in the obj_section tables). | |
2956 | ||
2957 | The interface is as follows: | |
c5aa993b JM |
2958 | User commands: |
2959 | overlay map <name> -- tell gdb to consider this section mapped | |
2960 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2961 | overlay list -- list the sections that GDB thinks are mapped | |
2962 | overlay read-target -- get the target's state of what's mapped | |
2963 | overlay off/manual/auto -- set overlay debugging state | |
2964 | Functional interface: | |
2965 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2966 | section, return that section. | |
5417f6dc | 2967 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2968 | the pc, either in its VMA or its LMA |
714835d5 | 2969 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2970 | section_is_overlay(sect): true if section's VMA != LMA |
2971 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2972 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2973 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2974 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2975 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2976 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2977 | either in VMA or LMA depending on whether | |
c378eb4e | 2978 | the symbol's section is currently mapped. */ |
c906108c SS |
2979 | |
2980 | /* Overlay debugging state: */ | |
2981 | ||
d874f1e2 | 2982 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2983 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2984 | |
c906108c | 2985 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2986 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2987 | SECTION is loaded at an address different from where it will "run". */ |
2988 | ||
2989 | int | |
714835d5 | 2990 | section_is_overlay (struct obj_section *section) |
c906108c | 2991 | { |
714835d5 UW |
2992 | if (overlay_debugging && section) |
2993 | { | |
2994 | bfd *abfd = section->objfile->obfd; | |
2995 | asection *bfd_section = section->the_bfd_section; | |
f888f159 | 2996 | |
714835d5 UW |
2997 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2998 | && bfd_section_lma (abfd, bfd_section) | |
2999 | != bfd_section_vma (abfd, bfd_section)) | |
3000 | return 1; | |
3001 | } | |
c906108c SS |
3002 | |
3003 | return 0; | |
3004 | } | |
3005 | ||
3006 | /* Function: overlay_invalidate_all (void) | |
3007 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3008 | ||
3009 | static void | |
fba45db2 | 3010 | overlay_invalidate_all (void) |
c906108c | 3011 | { |
c5aa993b | 3012 | struct objfile *objfile; |
c906108c SS |
3013 | struct obj_section *sect; |
3014 | ||
3015 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3016 | if (section_is_overlay (sect)) |
3017 | sect->ovly_mapped = -1; | |
c906108c SS |
3018 | } |
3019 | ||
714835d5 | 3020 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3021 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3022 | |
3023 | Access to the ovly_mapped flag is restricted to this function, so | |
3024 | that we can do automatic update. If the global flag | |
3025 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3026 | overlay_invalidate_all. If the mapped state of the particular | |
3027 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3028 | ||
714835d5 UW |
3029 | int |
3030 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3031 | { |
9216df95 UW |
3032 | struct gdbarch *gdbarch; |
3033 | ||
714835d5 | 3034 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3035 | return 0; |
3036 | ||
c5aa993b | 3037 | switch (overlay_debugging) |
c906108c SS |
3038 | { |
3039 | default: | |
d874f1e2 | 3040 | case ovly_off: |
c5aa993b | 3041 | return 0; /* overlay debugging off */ |
d874f1e2 | 3042 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3043 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3044 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3045 | gdbarch = get_objfile_arch (osect->objfile); |
3046 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3047 | { |
3048 | if (overlay_cache_invalid) | |
3049 | { | |
3050 | overlay_invalidate_all (); | |
3051 | overlay_cache_invalid = 0; | |
3052 | } | |
3053 | if (osect->ovly_mapped == -1) | |
9216df95 | 3054 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3055 | } |
3056 | /* fall thru to manual case */ | |
d874f1e2 | 3057 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3058 | return osect->ovly_mapped == 1; |
3059 | } | |
3060 | } | |
3061 | ||
c906108c SS |
3062 | /* Function: pc_in_unmapped_range |
3063 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3064 | ||
3065 | CORE_ADDR | |
714835d5 | 3066 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3067 | { |
714835d5 UW |
3068 | if (section_is_overlay (section)) |
3069 | { | |
3070 | bfd *abfd = section->objfile->obfd; | |
3071 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3072 | |
714835d5 UW |
3073 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3074 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3075 | CORE_ADDR offset = obj_section_offset (section); | |
3076 | ||
3077 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3078 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3079 | return 1; | |
3080 | } | |
c906108c | 3081 | |
c906108c SS |
3082 | return 0; |
3083 | } | |
3084 | ||
3085 | /* Function: pc_in_mapped_range | |
3086 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3087 | ||
3088 | CORE_ADDR | |
714835d5 | 3089 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3090 | { |
714835d5 UW |
3091 | if (section_is_overlay (section)) |
3092 | { | |
3093 | if (obj_section_addr (section) <= pc | |
3094 | && pc < obj_section_endaddr (section)) | |
3095 | return 1; | |
3096 | } | |
c906108c | 3097 | |
c906108c SS |
3098 | return 0; |
3099 | } | |
3100 | ||
9ec8e6a0 JB |
3101 | |
3102 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3103 | otherwise. */ | |
b9362cc7 | 3104 | static int |
714835d5 | 3105 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3106 | { |
714835d5 UW |
3107 | CORE_ADDR a_start = obj_section_addr (a); |
3108 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3109 | CORE_ADDR b_start = obj_section_addr (b); | |
3110 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3111 | |
3112 | return (a_start < b_end && b_start < a_end); | |
3113 | } | |
3114 | ||
c906108c SS |
3115 | /* Function: overlay_unmapped_address (PC, SECTION) |
3116 | Returns the address corresponding to PC in the unmapped (load) range. | |
3117 | May be the same as PC. */ | |
3118 | ||
3119 | CORE_ADDR | |
714835d5 | 3120 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3121 | { |
714835d5 UW |
3122 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3123 | { | |
3124 | bfd *abfd = section->objfile->obfd; | |
3125 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3126 | |
714835d5 UW |
3127 | return pc + bfd_section_lma (abfd, bfd_section) |
3128 | - bfd_section_vma (abfd, bfd_section); | |
3129 | } | |
c906108c SS |
3130 | |
3131 | return pc; | |
3132 | } | |
3133 | ||
3134 | /* Function: overlay_mapped_address (PC, SECTION) | |
3135 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3136 | May be the same as PC. */ | |
3137 | ||
3138 | CORE_ADDR | |
714835d5 | 3139 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3140 | { |
714835d5 UW |
3141 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3142 | { | |
3143 | bfd *abfd = section->objfile->obfd; | |
3144 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3145 | |
714835d5 UW |
3146 | return pc + bfd_section_vma (abfd, bfd_section) |
3147 | - bfd_section_lma (abfd, bfd_section); | |
3148 | } | |
c906108c SS |
3149 | |
3150 | return pc; | |
3151 | } | |
3152 | ||
3153 | ||
5417f6dc | 3154 | /* Function: symbol_overlayed_address |
c906108c SS |
3155 | Return one of two addresses (relative to the VMA or to the LMA), |
3156 | depending on whether the section is mapped or not. */ | |
3157 | ||
c5aa993b | 3158 | CORE_ADDR |
714835d5 | 3159 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3160 | { |
3161 | if (overlay_debugging) | |
3162 | { | |
c378eb4e | 3163 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3164 | if (section == 0) |
3165 | return address; | |
c378eb4e MS |
3166 | /* If the symbol's section is not an overlay, just return its |
3167 | address. */ | |
c906108c SS |
3168 | if (!section_is_overlay (section)) |
3169 | return address; | |
c378eb4e | 3170 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3171 | if (section_is_mapped (section)) |
3172 | return address; | |
3173 | /* | |
3174 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3175 | * then return its LOADED address rather than its vma address!! | |
3176 | */ | |
3177 | return overlay_unmapped_address (address, section); | |
3178 | } | |
3179 | return address; | |
3180 | } | |
3181 | ||
5417f6dc | 3182 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3183 | Return the best-match overlay section for PC: |
3184 | If PC matches a mapped overlay section's VMA, return that section. | |
3185 | Else if PC matches an unmapped section's VMA, return that section. | |
3186 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3187 | ||
714835d5 | 3188 | struct obj_section * |
fba45db2 | 3189 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3190 | { |
c5aa993b | 3191 | struct objfile *objfile; |
c906108c SS |
3192 | struct obj_section *osect, *best_match = NULL; |
3193 | ||
3194 | if (overlay_debugging) | |
3195 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3196 | if (section_is_overlay (osect)) |
c5aa993b | 3197 | { |
714835d5 | 3198 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3199 | { |
714835d5 UW |
3200 | if (section_is_mapped (osect)) |
3201 | return osect; | |
c5aa993b JM |
3202 | else |
3203 | best_match = osect; | |
3204 | } | |
714835d5 | 3205 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3206 | best_match = osect; |
3207 | } | |
714835d5 | 3208 | return best_match; |
c906108c SS |
3209 | } |
3210 | ||
3211 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3212 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3213 | currently marked as MAPPED, return that section. Else return NULL. */ |
3214 | ||
714835d5 | 3215 | struct obj_section * |
fba45db2 | 3216 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3217 | { |
c5aa993b | 3218 | struct objfile *objfile; |
c906108c SS |
3219 | struct obj_section *osect; |
3220 | ||
3221 | if (overlay_debugging) | |
3222 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3223 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3224 | return osect; | |
c906108c SS |
3225 | |
3226 | return NULL; | |
3227 | } | |
3228 | ||
3229 | /* Function: list_overlays_command | |
c378eb4e | 3230 | Print a list of mapped sections and their PC ranges. */ |
c906108c SS |
3231 | |
3232 | void | |
fba45db2 | 3233 | list_overlays_command (char *args, int from_tty) |
c906108c | 3234 | { |
c5aa993b JM |
3235 | int nmapped = 0; |
3236 | struct objfile *objfile; | |
c906108c SS |
3237 | struct obj_section *osect; |
3238 | ||
3239 | if (overlay_debugging) | |
3240 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3241 | if (section_is_mapped (osect)) |
c5aa993b | 3242 | { |
5af949e3 | 3243 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3244 | const char *name; |
3245 | bfd_vma lma, vma; | |
3246 | int size; | |
3247 | ||
3248 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3249 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3250 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3251 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3252 | ||
3253 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3254 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3255 | puts_filtered (" - "); |
5af949e3 | 3256 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3257 | printf_filtered (", mapped at "); |
5af949e3 | 3258 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3259 | puts_filtered (" - "); |
5af949e3 | 3260 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3261 | puts_filtered ("\n"); |
3262 | ||
3263 | nmapped++; | |
3264 | } | |
c906108c | 3265 | if (nmapped == 0) |
a3f17187 | 3266 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3267 | } |
3268 | ||
3269 | /* Function: map_overlay_command | |
3270 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3271 | ||
3272 | void | |
fba45db2 | 3273 | map_overlay_command (char *args, int from_tty) |
c906108c | 3274 | { |
c5aa993b JM |
3275 | struct objfile *objfile, *objfile2; |
3276 | struct obj_section *sec, *sec2; | |
c906108c SS |
3277 | |
3278 | if (!overlay_debugging) | |
3e43a32a MS |
3279 | error (_("Overlay debugging not enabled. Use " |
3280 | "either the 'overlay auto' or\n" | |
3281 | "the 'overlay manual' command.")); | |
c906108c SS |
3282 | |
3283 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3284 | error (_("Argument required: name of an overlay section")); |
c906108c | 3285 | |
c378eb4e | 3286 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3287 | ALL_OBJSECTIONS (objfile, sec) |
3288 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3289 | { |
c378eb4e | 3290 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3291 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3292 | continue; /* not an overlay section */ |
3293 | ||
c378eb4e | 3294 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3295 | sec->ovly_mapped = 1; |
3296 | ||
3297 | /* Next, make a pass and unmap any sections that are | |
3298 | overlapped by this new section: */ | |
3299 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3300 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3301 | { |
3302 | if (info_verbose) | |
a3f17187 | 3303 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3304 | bfd_section_name (objfile->obfd, |
3305 | sec2->the_bfd_section)); | |
c378eb4e | 3306 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3307 | } |
3308 | return; | |
3309 | } | |
8a3fe4f8 | 3310 | error (_("No overlay section called %s"), args); |
c906108c SS |
3311 | } |
3312 | ||
3313 | /* Function: unmap_overlay_command | |
5417f6dc | 3314 | Mark the overlay section as unmapped |
c906108c SS |
3315 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3316 | ||
3317 | void | |
fba45db2 | 3318 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3319 | { |
c5aa993b | 3320 | struct objfile *objfile; |
c906108c SS |
3321 | struct obj_section *sec; |
3322 | ||
3323 | if (!overlay_debugging) | |
3e43a32a MS |
3324 | error (_("Overlay debugging not enabled. " |
3325 | "Use either the 'overlay auto' or\n" | |
3326 | "the 'overlay manual' command.")); | |
c906108c SS |
3327 | |
3328 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3329 | error (_("Argument required: name of an overlay section")); |
c906108c | 3330 | |
c378eb4e | 3331 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3332 | ALL_OBJSECTIONS (objfile, sec) |
3333 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3334 | { |
3335 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3336 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3337 | sec->ovly_mapped = 0; |
3338 | return; | |
3339 | } | |
8a3fe4f8 | 3340 | error (_("No overlay section called %s"), args); |
c906108c SS |
3341 | } |
3342 | ||
3343 | /* Function: overlay_auto_command | |
3344 | A utility command to turn on overlay debugging. | |
c378eb4e | 3345 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3346 | |
3347 | static void | |
fba45db2 | 3348 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3349 | { |
d874f1e2 | 3350 | overlay_debugging = ovly_auto; |
1900040c | 3351 | enable_overlay_breakpoints (); |
c906108c | 3352 | if (info_verbose) |
a3f17187 | 3353 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3354 | } |
3355 | ||
3356 | /* Function: overlay_manual_command | |
3357 | A utility command to turn on overlay debugging. | |
c378eb4e | 3358 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3359 | |
3360 | static void | |
fba45db2 | 3361 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3362 | { |
d874f1e2 | 3363 | overlay_debugging = ovly_on; |
1900040c | 3364 | disable_overlay_breakpoints (); |
c906108c | 3365 | if (info_verbose) |
a3f17187 | 3366 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3367 | } |
3368 | ||
3369 | /* Function: overlay_off_command | |
3370 | A utility command to turn on overlay debugging. | |
c378eb4e | 3371 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3372 | |
3373 | static void | |
fba45db2 | 3374 | overlay_off_command (char *args, int from_tty) |
c906108c | 3375 | { |
d874f1e2 | 3376 | overlay_debugging = ovly_off; |
1900040c | 3377 | disable_overlay_breakpoints (); |
c906108c | 3378 | if (info_verbose) |
a3f17187 | 3379 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3380 | } |
3381 | ||
3382 | static void | |
fba45db2 | 3383 | overlay_load_command (char *args, int from_tty) |
c906108c | 3384 | { |
e17c207e UW |
3385 | struct gdbarch *gdbarch = get_current_arch (); |
3386 | ||
3387 | if (gdbarch_overlay_update_p (gdbarch)) | |
3388 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3389 | else |
8a3fe4f8 | 3390 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3391 | } |
3392 | ||
3393 | /* Function: overlay_command | |
c378eb4e | 3394 | A place-holder for a mis-typed command. */ |
c906108c | 3395 | |
c378eb4e | 3396 | /* Command list chain containing all defined "overlay" subcommands. */ |
c906108c SS |
3397 | struct cmd_list_element *overlaylist; |
3398 | ||
3399 | static void | |
fba45db2 | 3400 | overlay_command (char *args, int from_tty) |
c906108c | 3401 | { |
c5aa993b | 3402 | printf_unfiltered |
c906108c SS |
3403 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3404 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3405 | } | |
3406 | ||
3407 | ||
3408 | /* Target Overlays for the "Simplest" overlay manager: | |
3409 | ||
5417f6dc RM |
3410 | This is GDB's default target overlay layer. It works with the |
3411 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3412 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3413 | so targets that use a different runtime overlay manager can |
c906108c SS |
3414 | substitute their own overlay_update function and take over the |
3415 | function pointer. | |
3416 | ||
3417 | The overlay_update function pokes around in the target's data structures | |
3418 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3419 | this information. | |
3420 | ||
3421 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3422 | unsigned _novlys; /# number of overlay sections #/ |
3423 | unsigned _ovly_table[_novlys][4] = { | |
3424 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3425 | {..., ..., ..., ...}, | |
3426 | } | |
3427 | unsigned _novly_regions; /# number of overlay regions #/ | |
3428 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3429 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3430 | {..., ..., ...}, | |
3431 | } | |
c906108c SS |
3432 | These functions will attempt to update GDB's mappedness state in the |
3433 | symbol section table, based on the target's mappedness state. | |
3434 | ||
3435 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3436 | attempt to detect when the cached copy is invalidated. The main | |
3437 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3438 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3439 | the target (whenever possible). */ |
c906108c SS |
3440 | |
3441 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3442 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3443 | static unsigned cache_novlys = 0; |
c906108c | 3444 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3445 | enum ovly_index |
3446 | { | |
3447 | VMA, SIZE, LMA, MAPPED | |
3448 | }; | |
c906108c | 3449 | |
c378eb4e | 3450 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3451 | static void |
fba45db2 | 3452 | simple_free_overlay_table (void) |
c906108c SS |
3453 | { |
3454 | if (cache_ovly_table) | |
b8c9b27d | 3455 | xfree (cache_ovly_table); |
c5aa993b | 3456 | cache_novlys = 0; |
c906108c SS |
3457 | cache_ovly_table = NULL; |
3458 | cache_ovly_table_base = 0; | |
3459 | } | |
3460 | ||
9216df95 | 3461 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3462 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3463 | static void |
9216df95 | 3464 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3465 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3466 | { |
c378eb4e | 3467 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3468 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3469 | int i; |
c906108c | 3470 | |
9216df95 | 3471 | read_memory (memaddr, buf, len * size); |
c906108c | 3472 | for (i = 0; i < len; i++) |
e17a4113 | 3473 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3474 | } |
3475 | ||
3476 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3477 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3478 | static int |
fba45db2 | 3479 | simple_read_overlay_table (void) |
c906108c | 3480 | { |
0d43edd1 | 3481 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3482 | struct gdbarch *gdbarch; |
3483 | int word_size; | |
e17a4113 | 3484 | enum bfd_endian byte_order; |
c906108c SS |
3485 | |
3486 | simple_free_overlay_table (); | |
9b27852e | 3487 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3488 | if (! novlys_msym) |
c906108c | 3489 | { |
8a3fe4f8 | 3490 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3491 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3492 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3493 | return 0; |
c906108c | 3494 | } |
0d43edd1 | 3495 | |
9b27852e | 3496 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3497 | if (! ovly_table_msym) |
3498 | { | |
8a3fe4f8 | 3499 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3500 | "`_ovly_table' array\n" |
8a3fe4f8 | 3501 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3502 | return 0; |
3503 | } | |
3504 | ||
9216df95 UW |
3505 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3506 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3507 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3508 | |
e17a4113 UW |
3509 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3510 | 4, byte_order); | |
0d43edd1 JB |
3511 | cache_ovly_table |
3512 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3513 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3514 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3515 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3516 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3517 | |
c5aa993b | 3518 | return 1; /* SUCCESS */ |
c906108c SS |
3519 | } |
3520 | ||
5417f6dc | 3521 | /* Function: simple_overlay_update_1 |
c906108c SS |
3522 | A helper function for simple_overlay_update. Assuming a cached copy |
3523 | of _ovly_table exists, look through it to find an entry whose vma, | |
3524 | lma and size match those of OSECT. Re-read the entry and make sure | |
3525 | it still matches OSECT (else the table may no longer be valid). | |
3526 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3527 | success, 0 for failure. */ | |
3528 | ||
3529 | static int | |
fba45db2 | 3530 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3531 | { |
3532 | int i, size; | |
fbd35540 MS |
3533 | bfd *obfd = osect->objfile->obfd; |
3534 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3535 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3536 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3537 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3538 | |
2c500098 | 3539 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3540 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3541 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3542 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3543 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3544 | { |
9216df95 UW |
3545 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3546 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3547 | 4, word_size, byte_order); |
fbd35540 MS |
3548 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3549 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3550 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3551 | { |
3552 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3553 | return 1; | |
3554 | } | |
c378eb4e | 3555 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3556 | return 0; |
3557 | } | |
3558 | return 0; | |
3559 | } | |
3560 | ||
3561 | /* Function: simple_overlay_update | |
5417f6dc RM |
3562 | If OSECT is NULL, then update all sections' mapped state |
3563 | (after re-reading the entire target _ovly_table). | |
3564 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3565 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3566 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3567 | re-read the entire cache, and go ahead and update all sections. */ |
3568 | ||
1c772458 | 3569 | void |
fba45db2 | 3570 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3571 | { |
c5aa993b | 3572 | struct objfile *objfile; |
c906108c | 3573 | |
c378eb4e | 3574 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3575 | if (osect) |
c378eb4e | 3576 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3577 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3578 | { |
3579 | /* Does its cached location match what's currently in the | |
3580 | symtab? */ | |
3581 | struct minimal_symbol *minsym | |
3582 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3583 | ||
3584 | if (minsym == NULL) | |
3585 | error (_("Error reading inferior's overlay table: couldn't " | |
3586 | "find `_ovly_table' array\n" | |
3587 | "in inferior. Use `overlay manual' mode.")); | |
3588 | ||
3589 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3590 | /* Then go ahead and try to look up this single section in | |
3591 | the cache. */ | |
3592 | if (simple_overlay_update_1 (osect)) | |
3593 | /* Found it! We're done. */ | |
3594 | return; | |
3595 | } | |
c906108c SS |
3596 | |
3597 | /* Cached table no good: need to read the entire table anew. | |
3598 | Or else we want all the sections, in which case it's actually | |
3599 | more efficient to read the whole table in one block anyway. */ | |
3600 | ||
0d43edd1 JB |
3601 | if (! simple_read_overlay_table ()) |
3602 | return; | |
3603 | ||
c378eb4e | 3604 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3605 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3606 | if (section_is_overlay (osect)) |
c5aa993b JM |
3607 | { |
3608 | int i, size; | |
fbd35540 MS |
3609 | bfd *obfd = osect->objfile->obfd; |
3610 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3611 | |
2c500098 | 3612 | size = bfd_get_section_size (bsect); |
c5aa993b | 3613 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3614 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3615 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3616 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3617 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3618 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3619 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3620 | } |
3621 | } | |
c906108c SS |
3622 | } |
3623 | ||
086df311 DJ |
3624 | /* Set the output sections and output offsets for section SECTP in |
3625 | ABFD. The relocation code in BFD will read these offsets, so we | |
3626 | need to be sure they're initialized. We map each section to itself, | |
3627 | with no offset; this means that SECTP->vma will be honored. */ | |
3628 | ||
3629 | static void | |
3630 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3631 | { | |
3632 | sectp->output_section = sectp; | |
3633 | sectp->output_offset = 0; | |
3634 | } | |
3635 | ||
ac8035ab TG |
3636 | /* Default implementation for sym_relocate. */ |
3637 | ||
3638 | ||
3639 | bfd_byte * | |
3640 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3641 | bfd_byte *buf) | |
3642 | { | |
3019eac3 DE |
3643 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3644 | DWO file. */ | |
3645 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3646 | |
3647 | /* We're only interested in sections with relocation | |
3648 | information. */ | |
3649 | if ((sectp->flags & SEC_RELOC) == 0) | |
3650 | return NULL; | |
3651 | ||
3652 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3653 | all sections begin at 0. */ | |
3654 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3655 | ||
3656 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3657 | } | |
3658 | ||
086df311 DJ |
3659 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3660 | contents are stored in BUF if it is non-NULL, or returned in a | |
3661 | malloc'd buffer otherwise. | |
3662 | ||
3663 | For some platforms and debug info formats, shared libraries contain | |
3664 | relocations against the debug sections (particularly for DWARF-2; | |
3665 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3666 | the version of the linker in use). Also, ELF object files naturally | |
3667 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3668 | the relocations in order to get the locations of symbols correct. |
3669 | Another example that may require relocation processing, is the | |
3670 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3671 | debug section. */ | |
086df311 DJ |
3672 | |
3673 | bfd_byte * | |
ac8035ab TG |
3674 | symfile_relocate_debug_section (struct objfile *objfile, |
3675 | asection *sectp, bfd_byte *buf) | |
086df311 | 3676 | { |
ac8035ab | 3677 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3678 | |
ac8035ab | 3679 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3680 | } |
c906108c | 3681 | |
31d99776 DJ |
3682 | struct symfile_segment_data * |
3683 | get_symfile_segment_data (bfd *abfd) | |
3684 | { | |
00b5771c | 3685 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3686 | |
3687 | if (sf == NULL) | |
3688 | return NULL; | |
3689 | ||
3690 | return sf->sym_segments (abfd); | |
3691 | } | |
3692 | ||
3693 | void | |
3694 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3695 | { | |
3696 | xfree (data->segment_bases); | |
3697 | xfree (data->segment_sizes); | |
3698 | xfree (data->segment_info); | |
3699 | xfree (data); | |
3700 | } | |
3701 | ||
28c32713 JB |
3702 | |
3703 | /* Given: | |
3704 | - DATA, containing segment addresses from the object file ABFD, and | |
3705 | the mapping from ABFD's sections onto the segments that own them, | |
3706 | and | |
3707 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3708 | segment addresses reported by the target, | |
3709 | store the appropriate offsets for each section in OFFSETS. | |
3710 | ||
3711 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3712 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3713 | ||
8d385431 DJ |
3714 | If there are more entries, then ignore the extra. The target may |
3715 | not be able to distinguish between an empty data segment and a | |
3716 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3717 | int |
3718 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3719 | struct section_offsets *offsets, | |
3720 | int num_segment_bases, | |
3721 | const CORE_ADDR *segment_bases) | |
3722 | { | |
3723 | int i; | |
3724 | asection *sect; | |
3725 | ||
28c32713 JB |
3726 | /* It doesn't make sense to call this function unless you have some |
3727 | segment base addresses. */ | |
202b96c1 | 3728 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3729 | |
31d99776 DJ |
3730 | /* If we do not have segment mappings for the object file, we |
3731 | can not relocate it by segments. */ | |
3732 | gdb_assert (data != NULL); | |
3733 | gdb_assert (data->num_segments > 0); | |
3734 | ||
31d99776 DJ |
3735 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3736 | { | |
31d99776 DJ |
3737 | int which = data->segment_info[i]; |
3738 | ||
28c32713 JB |
3739 | gdb_assert (0 <= which && which <= data->num_segments); |
3740 | ||
3741 | /* Don't bother computing offsets for sections that aren't | |
3742 | loaded as part of any segment. */ | |
3743 | if (! which) | |
3744 | continue; | |
3745 | ||
3746 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3747 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3748 | if (which > num_segment_bases) |
28c32713 | 3749 | which = num_segment_bases; |
31d99776 | 3750 | |
28c32713 JB |
3751 | offsets->offsets[i] = (segment_bases[which - 1] |
3752 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3753 | } |
3754 | ||
3755 | return 1; | |
3756 | } | |
3757 | ||
3758 | static void | |
3759 | symfile_find_segment_sections (struct objfile *objfile) | |
3760 | { | |
3761 | bfd *abfd = objfile->obfd; | |
3762 | int i; | |
3763 | asection *sect; | |
3764 | struct symfile_segment_data *data; | |
3765 | ||
3766 | data = get_symfile_segment_data (objfile->obfd); | |
3767 | if (data == NULL) | |
3768 | return; | |
3769 | ||
3770 | if (data->num_segments != 1 && data->num_segments != 2) | |
3771 | { | |
3772 | free_symfile_segment_data (data); | |
3773 | return; | |
3774 | } | |
3775 | ||
3776 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3777 | { | |
31d99776 DJ |
3778 | int which = data->segment_info[i]; |
3779 | ||
3780 | if (which == 1) | |
3781 | { | |
3782 | if (objfile->sect_index_text == -1) | |
3783 | objfile->sect_index_text = sect->index; | |
3784 | ||
3785 | if (objfile->sect_index_rodata == -1) | |
3786 | objfile->sect_index_rodata = sect->index; | |
3787 | } | |
3788 | else if (which == 2) | |
3789 | { | |
3790 | if (objfile->sect_index_data == -1) | |
3791 | objfile->sect_index_data = sect->index; | |
3792 | ||
3793 | if (objfile->sect_index_bss == -1) | |
3794 | objfile->sect_index_bss = sect->index; | |
3795 | } | |
3796 | } | |
3797 | ||
3798 | free_symfile_segment_data (data); | |
3799 | } | |
3800 | ||
c906108c | 3801 | void |
fba45db2 | 3802 | _initialize_symfile (void) |
c906108c SS |
3803 | { |
3804 | struct cmd_list_element *c; | |
c5aa993b | 3805 | |
1a966eab AC |
3806 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3807 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3808 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3809 | to execute."), &cmdlist); |
5ba2abeb | 3810 | set_cmd_completer (c, filename_completer); |
c906108c | 3811 | |
1a966eab | 3812 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3813 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3814 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3815 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3816 | The optional arguments are section-name section-address pairs and\n\ |
3817 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3818 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3819 | &cmdlist); |
5ba2abeb | 3820 | set_cmd_completer (c, filename_completer); |
c906108c | 3821 | |
1a966eab AC |
3822 | c = add_cmd ("load", class_files, load_command, _("\ |
3823 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3824 | for access from GDB.\n\ |
3825 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3826 | set_cmd_completer (c, filename_completer); |
c906108c | 3827 | |
c5aa993b | 3828 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3829 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3830 | "overlay ", 0, &cmdlist); |
3831 | ||
3832 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3833 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3834 | ||
c5aa993b | 3835 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3836 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3837 | |
c5aa993b | 3838 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3839 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3840 | |
c5aa993b | 3841 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3842 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3843 | |
c5aa993b | 3844 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3845 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3846 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3847 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3848 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3849 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3850 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3851 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3852 | |
3853 | /* Filename extension to source language lookup table: */ | |
3854 | init_filename_language_table (); | |
26c41df3 AC |
3855 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3856 | &ext_args, _("\ | |
3857 | Set mapping between filename extension and source language."), _("\ | |
3858 | Show mapping between filename extension and source language."), _("\ | |
3859 | Usage: set extension-language .foo bar"), | |
3860 | set_ext_lang_command, | |
920d2a44 | 3861 | show_ext_args, |
26c41df3 | 3862 | &setlist, &showlist); |
c906108c | 3863 | |
c5aa993b | 3864 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3865 | _("All filename extensions associated with a source language.")); |
917317f4 | 3866 | |
525226b5 AC |
3867 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3868 | &debug_file_directory, _("\ | |
24ddea62 JK |
3869 | Set the directories where separate debug symbols are searched for."), _("\ |
3870 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3871 | Separate debug symbols are first searched for in the same\n\ |
3872 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3873 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3874 | each global debug-file-directory component prepended."), |
525226b5 | 3875 | NULL, |
920d2a44 | 3876 | show_debug_file_directory, |
525226b5 | 3877 | &setlist, &showlist); |
c906108c | 3878 | } |