Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4c38e0a4 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
777ea8f1 | 5 | Free Software Foundation, Inc. |
8926118c | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support, using pieces from other GDB modules. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
e17c207e | 25 | #include "arch-utils.h" |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "gdbcore.h" | |
30 | #include "frame.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
fb14de7b UW |
41 | #include "inferior.h" |
42 | #include "regcache.h" | |
5b5d99cf | 43 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 44 | #include "gdb-stabs.h" |
04ea0df1 | 45 | #include "gdb_obstack.h" |
d75b5104 | 46 | #include "completer.h" |
af5f3db6 | 47 | #include "bcache.h" |
2de7ced7 | 48 | #include "hashtab.h" |
dbda9972 | 49 | #include "readline/readline.h" |
7e8580c1 | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
ea53e89f | 52 | #include "observer.h" |
c1bd25fd | 53 | #include "exec.h" |
9bdcbae7 | 54 | #include "parser-defs.h" |
8756216b | 55 | #include "varobj.h" |
77069918 | 56 | #include "elf-bfd.h" |
e85a822c | 57 | #include "solib.h" |
f1838a98 | 58 | #include "remote.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 | |
9a4105ab AC |
70 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
71 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
72 | unsigned long section_sent, |
73 | unsigned long section_size, | |
74 | unsigned long total_sent, | |
c2d11a7d | 75 | unsigned long total_size); |
769d7dc4 AC |
76 | void (*deprecated_pre_add_symbol_hook) (const char *); |
77 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 78 | |
74b7792f AC |
79 | static void clear_symtab_users_cleanup (void *ignore); |
80 | ||
c906108c | 81 | /* Global variables owned by this file */ |
c5aa993b | 82 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 83 | |
c906108c SS |
84 | /* External variables and functions referenced. */ |
85 | ||
a14ed312 | 86 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
87 | |
88 | /* Functions this file defines */ | |
89 | ||
90 | #if 0 | |
a14ed312 KB |
91 | static int simple_read_overlay_region_table (void); |
92 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
93 | #endif |
94 | ||
a14ed312 | 95 | static void load_command (char *, int); |
c906108c | 96 | |
d7db6da9 FN |
97 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
98 | ||
a14ed312 | 99 | static void add_symbol_file_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | bfd *symfile_bfd_open (char *); |
c906108c | 102 | |
0e931cf0 JB |
103 | int get_section_index (struct objfile *, char *); |
104 | ||
31d99776 | 105 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 106 | |
a14ed312 | 107 | static void decrement_reading_symtab (void *); |
c906108c | 108 | |
a14ed312 | 109 | static void overlay_invalidate_all (void); |
c906108c | 110 | |
a14ed312 | 111 | void list_overlays_command (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | void map_overlay_command (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | void unmap_overlay_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void overlay_auto_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void overlay_manual_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void overlay_off_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void overlay_load_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void overlay_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static void simple_free_overlay_table (void); |
c906108c | 128 | |
e17a4113 UW |
129 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
130 | enum bfd_endian); | |
c906108c | 131 | |
a14ed312 | 132 | static int simple_read_overlay_table (void); |
c906108c | 133 | |
a14ed312 | 134 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 135 | |
a14ed312 | 136 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 137 | |
a14ed312 | 138 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 139 | |
a14ed312 | 140 | static void init_filename_language_table (void); |
392a587b | 141 | |
31d99776 DJ |
142 | static void symfile_find_segment_sections (struct objfile *objfile); |
143 | ||
a14ed312 | 144 | void _initialize_symfile (void); |
c906108c SS |
145 | |
146 | /* List of all available sym_fns. On gdb startup, each object file reader | |
147 | calls add_symtab_fns() to register information on each format it is | |
148 | prepared to read. */ | |
149 | ||
150 | static struct sym_fns *symtab_fns = NULL; | |
151 | ||
152 | /* Flag for whether user will be reloading symbols multiple times. | |
153 | Defaults to ON for VxWorks, otherwise OFF. */ | |
154 | ||
155 | #ifdef SYMBOL_RELOADING_DEFAULT | |
156 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
157 | #else | |
158 | int symbol_reloading = 0; | |
159 | #endif | |
920d2a44 AC |
160 | static void |
161 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
162 | struct cmd_list_element *c, const char *value) | |
163 | { | |
164 | fprintf_filtered (file, _("\ | |
165 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
166 | value); | |
167 | } | |
168 | ||
b7209cb4 FF |
169 | /* If non-zero, shared library symbols will be added automatically |
170 | when the inferior is created, new libraries are loaded, or when | |
171 | attaching to the inferior. This is almost always what users will | |
172 | want to have happen; but for very large programs, the startup time | |
173 | will be excessive, and so if this is a problem, the user can clear | |
174 | this flag and then add the shared library symbols as needed. Note | |
175 | that there is a potential for confusion, since if the shared | |
c906108c | 176 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 177 | report all the functions that are actually present. */ |
c906108c SS |
178 | |
179 | int auto_solib_add = 1; | |
b7209cb4 FF |
180 | |
181 | /* For systems that support it, a threshold size in megabytes. If | |
182 | automatically adding a new library's symbol table to those already | |
183 | known to the debugger would cause the total shared library symbol | |
184 | size to exceed this threshhold, then the shlib's symbols are not | |
185 | added. The threshold is ignored if the user explicitly asks for a | |
186 | shlib to be added, such as when using the "sharedlibrary" | |
187 | command. */ | |
188 | ||
189 | int auto_solib_limit; | |
c906108c | 190 | \f |
c5aa993b | 191 | |
c906108c SS |
192 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
193 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
194 | Note that the string at PTR does not have to be null terminated, I.E. it | |
195 | may be part of a larger string and we are only saving a substring. */ | |
196 | ||
197 | char * | |
63ca651f | 198 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 199 | { |
52f0bd74 | 200 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
201 | /* Open-coded memcpy--saves function call time. These strings are usually |
202 | short. FIXME: Is this really still true with a compiler that can | |
203 | inline memcpy? */ | |
204 | { | |
aa1ee363 AC |
205 | const char *p1 = ptr; |
206 | char *p2 = p; | |
63ca651f | 207 | const char *end = ptr + size; |
c906108c SS |
208 | while (p1 != end) |
209 | *p2++ = *p1++; | |
210 | } | |
211 | p[size] = 0; | |
212 | return p; | |
213 | } | |
214 | ||
48cb83fd JK |
215 | /* Concatenate NULL terminated variable argument list of `const char *' strings; |
216 | return the new string. Space is found in the OBSTACKP. Argument list must | |
217 | be terminated by a sentinel expression `(char *) NULL'. */ | |
c906108c SS |
218 | |
219 | char * | |
48cb83fd | 220 | obconcat (struct obstack *obstackp, ...) |
c906108c | 221 | { |
48cb83fd JK |
222 | va_list ap; |
223 | ||
224 | va_start (ap, obstackp); | |
225 | for (;;) | |
226 | { | |
227 | const char *s = va_arg (ap, const char *); | |
228 | ||
229 | if (s == NULL) | |
230 | break; | |
231 | ||
232 | obstack_grow_str (obstackp, s); | |
233 | } | |
234 | va_end (ap); | |
235 | obstack_1grow (obstackp, 0); | |
236 | ||
237 | return obstack_finish (obstackp); | |
c906108c SS |
238 | } |
239 | ||
ccefe4c4 | 240 | /* True if we are reading a symbol table. */ |
c906108c SS |
241 | |
242 | int currently_reading_symtab = 0; | |
243 | ||
244 | static void | |
fba45db2 | 245 | decrement_reading_symtab (void *dummy) |
c906108c SS |
246 | { |
247 | currently_reading_symtab--; | |
248 | } | |
249 | ||
ccefe4c4 TT |
250 | /* Increment currently_reading_symtab and return a cleanup that can be |
251 | used to decrement it. */ | |
252 | struct cleanup * | |
253 | increment_reading_symtab (void) | |
c906108c | 254 | { |
ccefe4c4 TT |
255 | ++currently_reading_symtab; |
256 | return make_cleanup (decrement_reading_symtab, NULL); | |
c906108c SS |
257 | } |
258 | ||
5417f6dc RM |
259 | /* Remember the lowest-addressed loadable section we've seen. |
260 | This function is called via bfd_map_over_sections. | |
c906108c SS |
261 | |
262 | In case of equal vmas, the section with the largest size becomes the | |
263 | lowest-addressed loadable section. | |
264 | ||
265 | If the vmas and sizes are equal, the last section is considered the | |
266 | lowest-addressed loadable section. */ | |
267 | ||
268 | void | |
4efb68b1 | 269 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 270 | { |
c5aa993b | 271 | asection **lowest = (asection **) obj; |
c906108c | 272 | |
eb73e134 | 273 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
274 | return; |
275 | if (!*lowest) | |
276 | *lowest = sect; /* First loadable section */ | |
277 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
278 | *lowest = sect; /* A lower loadable section */ | |
279 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
280 | && (bfd_section_size (abfd, (*lowest)) | |
281 | <= bfd_section_size (abfd, sect))) | |
282 | *lowest = sect; | |
283 | } | |
284 | ||
a39a16c4 MM |
285 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
286 | ||
287 | struct section_addr_info * | |
288 | alloc_section_addr_info (size_t num_sections) | |
289 | { | |
290 | struct section_addr_info *sap; | |
291 | size_t size; | |
292 | ||
293 | size = (sizeof (struct section_addr_info) | |
294 | + sizeof (struct other_sections) * (num_sections - 1)); | |
295 | sap = (struct section_addr_info *) xmalloc (size); | |
296 | memset (sap, 0, size); | |
297 | sap->num_sections = num_sections; | |
298 | ||
299 | return sap; | |
300 | } | |
62557bbc KB |
301 | |
302 | /* Build (allocate and populate) a section_addr_info struct from | |
303 | an existing section table. */ | |
304 | ||
305 | extern struct section_addr_info * | |
0542c86d PA |
306 | build_section_addr_info_from_section_table (const struct target_section *start, |
307 | const struct target_section *end) | |
62557bbc KB |
308 | { |
309 | struct section_addr_info *sap; | |
0542c86d | 310 | const struct target_section *stp; |
62557bbc KB |
311 | int oidx; |
312 | ||
a39a16c4 | 313 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
314 | |
315 | for (stp = start, oidx = 0; stp != end; stp++) | |
316 | { | |
5417f6dc | 317 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 318 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 319 | && oidx < end - start) |
62557bbc KB |
320 | { |
321 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 322 | sap->other[oidx].name |
fbd35540 | 323 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
324 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
325 | oidx++; | |
326 | } | |
327 | } | |
328 | ||
329 | return sap; | |
330 | } | |
331 | ||
82ccf5a5 | 332 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 333 | |
82ccf5a5 JK |
334 | static struct section_addr_info * |
335 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
336 | { |
337 | struct section_addr_info *sap; | |
338 | int i; | |
339 | struct bfd_section *sec; | |
340 | ||
82ccf5a5 JK |
341 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
342 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
343 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 344 | { |
82ccf5a5 JK |
345 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
346 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
012836ea JK |
347 | sap->other[i].sectindex = sec->index; |
348 | i++; | |
349 | } | |
089b4803 TG |
350 | return sap; |
351 | } | |
352 | ||
82ccf5a5 JK |
353 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
354 | ||
355 | struct section_addr_info * | |
356 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
357 | { | |
358 | struct section_addr_info *sap; | |
359 | int i; | |
360 | ||
361 | /* Before reread_symbols gets rewritten it is not safe to call: | |
362 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
363 | */ | |
364 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
365 | for (i = 0; i < sap->num_sections && sap->other[i].name; i++) | |
366 | { | |
367 | int sectindex = sap->other[i].sectindex; | |
368 | ||
369 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
370 | } | |
371 | return sap; | |
372 | } | |
62557bbc KB |
373 | |
374 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
375 | ||
376 | extern void | |
377 | free_section_addr_info (struct section_addr_info *sap) | |
378 | { | |
379 | int idx; | |
380 | ||
a39a16c4 | 381 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 382 | if (sap->other[idx].name) |
b8c9b27d KB |
383 | xfree (sap->other[idx].name); |
384 | xfree (sap); | |
62557bbc KB |
385 | } |
386 | ||
387 | ||
e8289572 JB |
388 | /* Initialize OBJFILE's sect_index_* members. */ |
389 | static void | |
390 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 391 | { |
e8289572 | 392 | asection *sect; |
c906108c | 393 | int i; |
5417f6dc | 394 | |
b8fbeb18 | 395 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 396 | if (sect) |
b8fbeb18 EZ |
397 | objfile->sect_index_text = sect->index; |
398 | ||
399 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 400 | if (sect) |
b8fbeb18 EZ |
401 | objfile->sect_index_data = sect->index; |
402 | ||
403 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 404 | if (sect) |
b8fbeb18 EZ |
405 | objfile->sect_index_bss = sect->index; |
406 | ||
407 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 408 | if (sect) |
b8fbeb18 EZ |
409 | objfile->sect_index_rodata = sect->index; |
410 | ||
bbcd32ad FF |
411 | /* This is where things get really weird... We MUST have valid |
412 | indices for the various sect_index_* members or gdb will abort. | |
413 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
414 | accomodate that. First, check for a file with the standard |
415 | one or two segments. */ | |
416 | ||
417 | symfile_find_segment_sections (objfile); | |
418 | ||
419 | /* Except when explicitly adding symbol files at some address, | |
420 | section_offsets contains nothing but zeros, so it doesn't matter | |
421 | which slot in section_offsets the individual sect_index_* members | |
422 | index into. So if they are all zero, it is safe to just point | |
423 | all the currently uninitialized indices to the first slot. But | |
424 | beware: if this is the main executable, it may be relocated | |
425 | later, e.g. by the remote qOffsets packet, and then this will | |
426 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
427 | |
428 | for (i = 0; i < objfile->num_sections; i++) | |
429 | { | |
430 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
431 | { | |
432 | break; | |
433 | } | |
434 | } | |
435 | if (i == objfile->num_sections) | |
436 | { | |
437 | if (objfile->sect_index_text == -1) | |
438 | objfile->sect_index_text = 0; | |
439 | if (objfile->sect_index_data == -1) | |
440 | objfile->sect_index_data = 0; | |
441 | if (objfile->sect_index_bss == -1) | |
442 | objfile->sect_index_bss = 0; | |
443 | if (objfile->sect_index_rodata == -1) | |
444 | objfile->sect_index_rodata = 0; | |
445 | } | |
b8fbeb18 | 446 | } |
c906108c | 447 | |
c1bd25fd DJ |
448 | /* The arguments to place_section. */ |
449 | ||
450 | struct place_section_arg | |
451 | { | |
452 | struct section_offsets *offsets; | |
453 | CORE_ADDR lowest; | |
454 | }; | |
455 | ||
456 | /* Find a unique offset to use for loadable section SECT if | |
457 | the user did not provide an offset. */ | |
458 | ||
2c0b251b | 459 | static void |
c1bd25fd DJ |
460 | place_section (bfd *abfd, asection *sect, void *obj) |
461 | { | |
462 | struct place_section_arg *arg = obj; | |
463 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
464 | int done; | |
3bd72c6f | 465 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 466 | |
2711e456 DJ |
467 | /* We are only interested in allocated sections. */ |
468 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
469 | return; |
470 | ||
471 | /* If the user specified an offset, honor it. */ | |
472 | if (offsets[sect->index] != 0) | |
473 | return; | |
474 | ||
475 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
476 | start_addr = (arg->lowest + align - 1) & -align; |
477 | ||
c1bd25fd DJ |
478 | do { |
479 | asection *cur_sec; | |
c1bd25fd | 480 | |
c1bd25fd DJ |
481 | done = 1; |
482 | ||
483 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
484 | { | |
485 | int indx = cur_sec->index; | |
c1bd25fd DJ |
486 | |
487 | /* We don't need to compare against ourself. */ | |
488 | if (cur_sec == sect) | |
489 | continue; | |
490 | ||
2711e456 DJ |
491 | /* We can only conflict with allocated sections. */ |
492 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
493 | continue; |
494 | ||
495 | /* If the section offset is 0, either the section has not been placed | |
496 | yet, or it was the lowest section placed (in which case LOWEST | |
497 | will be past its end). */ | |
498 | if (offsets[indx] == 0) | |
499 | continue; | |
500 | ||
501 | /* If this section would overlap us, then we must move up. */ | |
502 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
503 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
504 | { | |
505 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
506 | start_addr = (start_addr + align - 1) & -align; | |
507 | done = 0; | |
3bd72c6f | 508 | break; |
c1bd25fd DJ |
509 | } |
510 | ||
511 | /* Otherwise, we appear to be OK. So far. */ | |
512 | } | |
513 | } | |
514 | while (!done); | |
515 | ||
516 | offsets[sect->index] = start_addr; | |
517 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 518 | } |
e8289572 | 519 | |
75242ef4 JK |
520 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
521 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
522 | entries. */ | |
e8289572 JB |
523 | |
524 | void | |
75242ef4 JK |
525 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
526 | int num_sections, | |
527 | struct section_addr_info *addrs) | |
e8289572 JB |
528 | { |
529 | int i; | |
530 | ||
75242ef4 | 531 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 532 | |
75242ef4 | 533 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 534 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 535 | { |
75242ef4 | 536 | struct other_sections *osp; |
e8289572 | 537 | |
75242ef4 | 538 | osp = &addrs->other[i]; |
e8289572 JB |
539 | if (osp->addr == 0) |
540 | continue; | |
541 | ||
542 | /* Record all sections in offsets */ | |
543 | /* The section_offsets in the objfile are here filled in using | |
544 | the BFD index. */ | |
75242ef4 JK |
545 | section_offsets->offsets[osp->sectindex] = osp->addr; |
546 | } | |
547 | } | |
548 | ||
82ccf5a5 JK |
549 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
550 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
551 | ||
552 | static int | |
553 | addrs_section_compar (const void *ap, const void *bp) | |
554 | { | |
555 | const struct other_sections *a = *((struct other_sections **) ap); | |
556 | const struct other_sections *b = *((struct other_sections **) bp); | |
557 | int retval, a_idx, b_idx; | |
558 | ||
559 | retval = strcmp (a->name, b->name); | |
560 | if (retval) | |
561 | return retval; | |
562 | ||
563 | /* SECTINDEX is undefined iff ADDR is zero. */ | |
564 | a_idx = a->addr == 0 ? 0 : a->sectindex; | |
565 | b_idx = b->addr == 0 ? 0 : b->sectindex; | |
566 | return a_idx - b_idx; | |
567 | } | |
568 | ||
569 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
570 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
571 | ||
572 | static struct other_sections ** | |
573 | addrs_section_sort (struct section_addr_info *addrs) | |
574 | { | |
575 | struct other_sections **array; | |
576 | int i; | |
577 | ||
578 | /* `+ 1' for the NULL terminator. */ | |
579 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
580 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
581 | array[i] = &addrs->other[i]; | |
582 | array[i] = NULL; | |
583 | ||
584 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
585 | ||
586 | return array; | |
587 | } | |
588 | ||
75242ef4 | 589 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
590 | also SECTINDEXes specific to ABFD there. This function can be used to |
591 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
592 | |
593 | void | |
594 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
595 | { | |
596 | asection *lower_sect; | |
75242ef4 JK |
597 | CORE_ADDR lower_offset; |
598 | int i; | |
82ccf5a5 JK |
599 | struct cleanup *my_cleanup; |
600 | struct section_addr_info *abfd_addrs; | |
601 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
602 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
603 | |
604 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
605 | continguous sections. */ |
606 | lower_sect = NULL; | |
607 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
608 | if (lower_sect == NULL) |
609 | { | |
610 | warning (_("no loadable sections found in added symbol-file %s"), | |
611 | bfd_get_filename (abfd)); | |
612 | lower_offset = 0; | |
e8289572 | 613 | } |
75242ef4 JK |
614 | else |
615 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
616 | ||
82ccf5a5 JK |
617 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
618 | in ABFD. Section names are not unique - there can be multiple sections of | |
619 | the same name. Also the sections of the same name do not have to be | |
620 | adjacent to each other. Some sections may be present only in one of the | |
621 | files. Even sections present in both files do not have to be in the same | |
622 | order. | |
623 | ||
624 | Use stable sort by name for the sections in both files. Then linearly | |
625 | scan both lists matching as most of the entries as possible. */ | |
626 | ||
627 | addrs_sorted = addrs_section_sort (addrs); | |
628 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
629 | ||
630 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
631 | make_cleanup_free_section_addr_info (abfd_addrs); | |
632 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
633 | make_cleanup (xfree, abfd_addrs_sorted); | |
634 | ||
635 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and ABFD_ADDRS_SORTED. */ | |
636 | ||
637 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
638 | * addrs->num_sections); | |
639 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
640 | ||
641 | while (*addrs_sorted) | |
642 | { | |
643 | const char *sect_name = (*addrs_sorted)->name; | |
644 | ||
645 | while (*abfd_addrs_sorted | |
646 | && strcmp ((*abfd_addrs_sorted)->name, sect_name) < 0) | |
647 | abfd_addrs_sorted++; | |
648 | ||
649 | if (*abfd_addrs_sorted | |
650 | && strcmp ((*abfd_addrs_sorted)->name, sect_name) == 0) | |
651 | { | |
652 | int index_in_addrs; | |
653 | ||
654 | /* Make the found item directly addressable from ADDRS. */ | |
655 | index_in_addrs = *addrs_sorted - addrs->other; | |
656 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
657 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
658 | ||
659 | /* Never use the same ABFD entry twice. */ | |
660 | abfd_addrs_sorted++; | |
661 | } | |
662 | ||
663 | addrs_sorted++; | |
664 | } | |
665 | ||
75242ef4 JK |
666 | /* Calculate offsets for the loadable sections. |
667 | FIXME! Sections must be in order of increasing loadable section | |
668 | so that contiguous sections can use the lower-offset!!! | |
669 | ||
670 | Adjust offsets if the segments are not contiguous. | |
671 | If the section is contiguous, its offset should be set to | |
672 | the offset of the highest loadable section lower than it | |
673 | (the loadable section directly below it in memory). | |
674 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
675 | ||
676 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
677 | { | |
b0fcb67f | 678 | const char *sect_name = addrs->other[i].name; |
82ccf5a5 | 679 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
680 | |
681 | if (sect) | |
75242ef4 | 682 | { |
672d9c23 | 683 | /* This is the index used by BFD. */ |
82ccf5a5 | 684 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
685 | |
686 | if (addrs->other[i].addr != 0) | |
75242ef4 | 687 | { |
82ccf5a5 | 688 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 689 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
690 | } |
691 | else | |
672d9c23 | 692 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
693 | } |
694 | else | |
672d9c23 | 695 | { |
b0fcb67f JK |
696 | /* This section does not exist in ABFD, which is normally |
697 | unexpected and we want to issue a warning. | |
698 | ||
4d9743af JK |
699 | However, the ELF prelinker does create a few sections which are |
700 | marked in the main executable as loadable (they are loaded in | |
701 | memory from the DYNAMIC segment) and yet are not present in | |
702 | separate debug info files. This is fine, and should not cause | |
703 | a warning. Shared libraries contain just the section | |
704 | ".gnu.liblist" but it is not marked as loadable there. There is | |
705 | no other way to identify them than by their name as the sections | |
706 | created by prelink have no special flags. */ | |
b0fcb67f JK |
707 | |
708 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af JK |
709 | || strcmp (sect_name, ".gnu.conflict") == 0 |
710 | || strcmp (sect_name, ".dynbss") == 0 | |
711 | || strcmp (sect_name, ".sdynbss") == 0)) | |
b0fcb67f JK |
712 | warning (_("section %s not found in %s"), sect_name, |
713 | bfd_get_filename (abfd)); | |
714 | ||
672d9c23 JK |
715 | addrs->other[i].addr = 0; |
716 | ||
717 | /* SECTINDEX is invalid if ADDR is zero. */ | |
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]); | |
30510692 DJ |
801 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
802 | offsets[cur_sec->index]); | |
2711e456 DJ |
803 | offsets[cur_sec->index] = 0; |
804 | } | |
805 | } | |
c1bd25fd DJ |
806 | } |
807 | ||
e8289572 JB |
808 | /* Remember the bfd indexes for the .text, .data, .bss and |
809 | .rodata sections. */ | |
810 | init_objfile_sect_indices (objfile); | |
811 | } | |
812 | ||
813 | ||
31d99776 DJ |
814 | /* Divide the file into segments, which are individual relocatable units. |
815 | This is the default version of the sym_fns.sym_segments function for | |
816 | symbol readers that do not have an explicit representation of segments. | |
817 | It assumes that object files do not have segments, and fully linked | |
818 | files have a single segment. */ | |
819 | ||
820 | struct symfile_segment_data * | |
821 | default_symfile_segments (bfd *abfd) | |
822 | { | |
823 | int num_sections, i; | |
824 | asection *sect; | |
825 | struct symfile_segment_data *data; | |
826 | CORE_ADDR low, high; | |
827 | ||
828 | /* Relocatable files contain enough information to position each | |
829 | loadable section independently; they should not be relocated | |
830 | in segments. */ | |
831 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
832 | return NULL; | |
833 | ||
834 | /* Make sure there is at least one loadable section in the file. */ | |
835 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
836 | { | |
837 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
838 | continue; | |
839 | ||
840 | break; | |
841 | } | |
842 | if (sect == NULL) | |
843 | return NULL; | |
844 | ||
845 | low = bfd_get_section_vma (abfd, sect); | |
846 | high = low + bfd_get_section_size (sect); | |
847 | ||
848 | data = XZALLOC (struct symfile_segment_data); | |
849 | data->num_segments = 1; | |
850 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
851 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
852 | ||
853 | num_sections = bfd_count_sections (abfd); | |
854 | data->segment_info = XCALLOC (num_sections, int); | |
855 | ||
856 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
857 | { | |
858 | CORE_ADDR vma; | |
859 | ||
860 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
861 | continue; | |
862 | ||
863 | vma = bfd_get_section_vma (abfd, sect); | |
864 | if (vma < low) | |
865 | low = vma; | |
866 | if (vma + bfd_get_section_size (sect) > high) | |
867 | high = vma + bfd_get_section_size (sect); | |
868 | ||
869 | data->segment_info[i] = 1; | |
870 | } | |
871 | ||
872 | data->segment_bases[0] = low; | |
873 | data->segment_sizes[0] = high - low; | |
874 | ||
875 | return data; | |
876 | } | |
877 | ||
c906108c SS |
878 | /* Process a symbol file, as either the main file or as a dynamically |
879 | loaded file. | |
880 | ||
96baa820 JM |
881 | OBJFILE is where the symbols are to be read from. |
882 | ||
7e8580c1 JB |
883 | ADDRS is the list of section load addresses. If the user has given |
884 | an 'add-symbol-file' command, then this is the list of offsets and | |
885 | addresses he or she provided as arguments to the command; or, if | |
886 | we're handling a shared library, these are the actual addresses the | |
887 | sections are loaded at, according to the inferior's dynamic linker | |
888 | (as gleaned by GDB's shared library code). We convert each address | |
889 | into an offset from the section VMA's as it appears in the object | |
890 | file, and then call the file's sym_offsets function to convert this | |
891 | into a format-specific offset table --- a `struct section_offsets'. | |
892 | If ADDRS is non-zero, OFFSETS must be zero. | |
893 | ||
894 | OFFSETS is a table of section offsets already in the right | |
895 | format-specific representation. NUM_OFFSETS is the number of | |
896 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
897 | assume this is the proper table the call to sym_offsets described | |
898 | above would produce. Instead of calling sym_offsets, we just dump | |
899 | it right into objfile->section_offsets. (When we're re-reading | |
900 | symbols from an objfile, we don't have the original load address | |
901 | list any more; all we have is the section offset table.) If | |
902 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 903 | |
7eedccfa PP |
904 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
905 | an extra symbol file such as dynamically loaded code, and wether | |
906 | breakpoint reset should be deferred. */ | |
c906108c SS |
907 | |
908 | void | |
7e8580c1 JB |
909 | syms_from_objfile (struct objfile *objfile, |
910 | struct section_addr_info *addrs, | |
911 | struct section_offsets *offsets, | |
912 | int num_offsets, | |
7eedccfa | 913 | int add_flags) |
c906108c | 914 | { |
a39a16c4 | 915 | struct section_addr_info *local_addr = NULL; |
c906108c | 916 | struct cleanup *old_chain; |
7eedccfa | 917 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 918 | |
7e8580c1 | 919 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 920 | |
c906108c | 921 | init_entry_point_info (objfile); |
31d99776 | 922 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 923 | |
75245b24 MS |
924 | if (objfile->sf == NULL) |
925 | return; /* No symbols. */ | |
926 | ||
c906108c SS |
927 | /* Make sure that partially constructed symbol tables will be cleaned up |
928 | if an error occurs during symbol reading. */ | |
74b7792f | 929 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 930 | |
a39a16c4 MM |
931 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
932 | list. We now establish the convention that an addr of zero means | |
933 | no load address was specified. */ | |
934 | if (! addrs && ! offsets) | |
935 | { | |
5417f6dc | 936 | local_addr |
a39a16c4 MM |
937 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
938 | make_cleanup (xfree, local_addr); | |
939 | addrs = local_addr; | |
940 | } | |
941 | ||
942 | /* Now either addrs or offsets is non-zero. */ | |
943 | ||
c5aa993b | 944 | if (mainline) |
c906108c SS |
945 | { |
946 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 947 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 948 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
949 | |
950 | /* Since no error yet, throw away the old symbol table. */ | |
951 | ||
952 | if (symfile_objfile != NULL) | |
953 | { | |
954 | free_objfile (symfile_objfile); | |
adb7f338 | 955 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
956 | } |
957 | ||
958 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
959 | If the user wants to get rid of them, they should do "symbol-file" |
960 | without arguments first. Not sure this is the best behavior | |
961 | (PR 2207). */ | |
c906108c | 962 | |
c5aa993b | 963 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
964 | } |
965 | ||
966 | /* Convert addr into an offset rather than an absolute address. | |
967 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 968 | and assume that <addr> is where that got loaded. |
c906108c | 969 | |
53a5351d JM |
970 | We no longer warn if the lowest section is not a text segment (as |
971 | happens for the PA64 port. */ | |
0d15807d | 972 | if (addrs && addrs->other[0].name) |
75242ef4 | 973 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
974 | |
975 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
976 | appear for this new file, and record how verbose to be, then do the | |
977 | initial symbol reading for this file. */ | |
978 | ||
c5aa993b | 979 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 980 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 981 | |
7e8580c1 JB |
982 | if (addrs) |
983 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
984 | else | |
985 | { | |
986 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
987 | ||
988 | /* Just copy in the offset table directly as given to us. */ | |
989 | objfile->num_sections = num_offsets; | |
990 | objfile->section_offsets | |
991 | = ((struct section_offsets *) | |
8b92e4d5 | 992 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
993 | memcpy (objfile->section_offsets, offsets, size); |
994 | ||
995 | init_objfile_sect_indices (objfile); | |
996 | } | |
c906108c | 997 | |
f4352531 | 998 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 999 | |
c906108c SS |
1000 | /* Discard cleanups as symbol reading was successful. */ |
1001 | ||
1002 | discard_cleanups (old_chain); | |
f7545552 | 1003 | xfree (local_addr); |
c906108c SS |
1004 | } |
1005 | ||
1006 | /* Perform required actions after either reading in the initial | |
1007 | symbols for a new objfile, or mapping in the symbols from a reusable | |
1008 | objfile. */ | |
c5aa993b | 1009 | |
c906108c | 1010 | void |
7eedccfa | 1011 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c SS |
1012 | { |
1013 | ||
1014 | /* If this is the main symbol file we have to clean up all users of the | |
1015 | old main symbol file. Otherwise it is sufficient to fixup all the | |
1016 | breakpoints that may have been redefined by this symbol file. */ | |
7eedccfa | 1017 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1018 | { |
1019 | /* OK, make it the "real" symbol file. */ | |
1020 | symfile_objfile = objfile; | |
1021 | ||
1022 | clear_symtab_users (); | |
1023 | } | |
7eedccfa | 1024 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1025 | { |
69de3c6a | 1026 | breakpoint_re_set (); |
c906108c SS |
1027 | } |
1028 | ||
1029 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1030 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1031 | } |
1032 | ||
1033 | /* Process a symbol file, as either the main file or as a dynamically | |
1034 | loaded file. | |
1035 | ||
5417f6dc RM |
1036 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
1037 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 1038 | |
7eedccfa PP |
1039 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1040 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1041 | |
1042 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1043 | syms_from_objfile, above. |
1044 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1045 | |
c906108c SS |
1046 | Upon success, returns a pointer to the objfile that was added. |
1047 | Upon failure, jumps back to command level (never returns). */ | |
7eedccfa | 1048 | |
7904e09f | 1049 | static struct objfile * |
7eedccfa PP |
1050 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1051 | int add_flags, | |
7904e09f JB |
1052 | struct section_addr_info *addrs, |
1053 | struct section_offsets *offsets, | |
1054 | int num_offsets, | |
7eedccfa | 1055 | int flags) |
c906108c SS |
1056 | { |
1057 | struct objfile *objfile; | |
a39a16c4 | 1058 | struct cleanup *my_cleanups; |
5417f6dc | 1059 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1060 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
c906108c | 1061 | |
5417f6dc | 1062 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 1063 | |
5417f6dc RM |
1064 | /* Give user a chance to burp if we'd be |
1065 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1066 | |
1067 | if ((have_full_symbols () || have_partial_symbols ()) | |
7eedccfa | 1068 | && (add_flags & SYMFILE_MAINLINE) |
c906108c | 1069 | && from_tty |
9e2f0ad4 | 1070 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1071 | error (_("Not confirmed.")); |
c906108c | 1072 | |
2df3850c | 1073 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 1074 | discard_cleanups (my_cleanups); |
c906108c | 1075 | |
78a4a9b9 AC |
1076 | /* We either created a new mapped symbol table, mapped an existing |
1077 | symbol table file which has not had initial symbol reading | |
1078 | performed, or need to read an unmapped symbol table. */ | |
1079 | if (from_tty || info_verbose) | |
c906108c | 1080 | { |
769d7dc4 AC |
1081 | if (deprecated_pre_add_symbol_hook) |
1082 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1083 | else |
c906108c | 1084 | { |
55333a84 DE |
1085 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1086 | wrap_here (""); | |
1087 | gdb_flush (gdb_stdout); | |
c906108c | 1088 | } |
c906108c | 1089 | } |
78a4a9b9 | 1090 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1091 | add_flags); |
c906108c SS |
1092 | |
1093 | /* We now have at least a partial symbol table. Check to see if the | |
1094 | user requested that all symbols be read on initial access via either | |
1095 | the gdb startup command line or on a per symbol file basis. Expand | |
1096 | all partial symbol tables for this objfile if so. */ | |
1097 | ||
2acceee2 | 1098 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 1099 | { |
55333a84 | 1100 | if (from_tty || info_verbose) |
c906108c | 1101 | { |
a3f17187 | 1102 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1103 | wrap_here (""); |
1104 | gdb_flush (gdb_stdout); | |
1105 | } | |
1106 | ||
ccefe4c4 TT |
1107 | if (objfile->sf) |
1108 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1109 | } |
1110 | ||
55333a84 | 1111 | if ((from_tty || info_verbose) |
e361b228 | 1112 | && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1113 | { |
1114 | wrap_here (""); | |
55333a84 | 1115 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1116 | wrap_here (""); |
1117 | } | |
1118 | ||
c906108c SS |
1119 | if (from_tty || info_verbose) |
1120 | { | |
769d7dc4 AC |
1121 | if (deprecated_post_add_symbol_hook) |
1122 | deprecated_post_add_symbol_hook (); | |
c906108c | 1123 | else |
55333a84 | 1124 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1125 | } |
1126 | ||
481d0f41 JB |
1127 | /* We print some messages regardless of whether 'from_tty || |
1128 | info_verbose' is true, so make sure they go out at the right | |
1129 | time. */ | |
1130 | gdb_flush (gdb_stdout); | |
1131 | ||
a39a16c4 MM |
1132 | do_cleanups (my_cleanups); |
1133 | ||
109f874e | 1134 | if (objfile->sf == NULL) |
8caee43b PP |
1135 | { |
1136 | observer_notify_new_objfile (objfile); | |
1137 | return objfile; /* No symbols. */ | |
1138 | } | |
109f874e | 1139 | |
7eedccfa | 1140 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1141 | |
06d3b283 | 1142 | observer_notify_new_objfile (objfile); |
c906108c | 1143 | |
ce7d4522 | 1144 | bfd_cache_close_all (); |
c906108c SS |
1145 | return (objfile); |
1146 | } | |
1147 | ||
9cce227f TG |
1148 | /* Add BFD as a separate debug file for OBJFILE. */ |
1149 | ||
1150 | void | |
1151 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1152 | { | |
15d123c9 | 1153 | struct objfile *new_objfile; |
089b4803 TG |
1154 | struct section_addr_info *sap; |
1155 | struct cleanup *my_cleanup; | |
1156 | ||
1157 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1158 | because sections of BFD may not match sections of OBJFILE and because | |
1159 | vma may have been modified by tools such as prelink. */ | |
1160 | sap = build_section_addr_info_from_objfile (objfile); | |
1161 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1162 | |
15d123c9 | 1163 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1164 | (bfd, symfile_flags, |
089b4803 | 1165 | sap, NULL, 0, |
9cce227f TG |
1166 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
1167 | | OBJF_USERLOADED)); | |
089b4803 TG |
1168 | |
1169 | do_cleanups (my_cleanup); | |
9cce227f | 1170 | |
15d123c9 | 1171 | add_separate_debug_objfile (new_objfile, objfile); |
9cce227f | 1172 | } |
7904e09f | 1173 | |
eb4556d7 JB |
1174 | /* Process the symbol file ABFD, as either the main file or as a |
1175 | dynamically loaded file. | |
1176 | ||
1177 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1178 | details. */ | |
1179 | struct objfile * | |
7eedccfa | 1180 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1181 | struct section_addr_info *addrs, |
7eedccfa | 1182 | int flags) |
eb4556d7 | 1183 | { |
7eedccfa PP |
1184 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
1185 | flags); | |
eb4556d7 JB |
1186 | } |
1187 | ||
1188 | ||
7904e09f JB |
1189 | /* Process a symbol file, as either the main file or as a dynamically |
1190 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1191 | for details. */ | |
1192 | struct objfile * | |
7eedccfa PP |
1193 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1194 | int flags) | |
7904e09f | 1195 | { |
7eedccfa PP |
1196 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
1197 | flags); | |
7904e09f JB |
1198 | } |
1199 | ||
1200 | ||
d7db6da9 FN |
1201 | /* Call symbol_file_add() with default values and update whatever is |
1202 | affected by the loading of a new main(). | |
1203 | Used when the file is supplied in the gdb command line | |
1204 | and by some targets with special loading requirements. | |
1205 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1206 | argument for the switches that can only be specified in the symbol_file | |
1207 | command itself. */ | |
5417f6dc | 1208 | |
1adeb98a FN |
1209 | void |
1210 | symbol_file_add_main (char *args, int from_tty) | |
1211 | { | |
d7db6da9 FN |
1212 | symbol_file_add_main_1 (args, from_tty, 0); |
1213 | } | |
1214 | ||
1215 | static void | |
1216 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1217 | { | |
7eedccfa PP |
1218 | const int add_flags = SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0); |
1219 | symbol_file_add (args, add_flags, NULL, flags); | |
d7db6da9 | 1220 | |
d7db6da9 FN |
1221 | /* Getting new symbols may change our opinion about |
1222 | what is frameless. */ | |
1223 | reinit_frame_cache (); | |
1224 | ||
1225 | set_initial_language (); | |
1adeb98a FN |
1226 | } |
1227 | ||
1228 | void | |
1229 | symbol_file_clear (int from_tty) | |
1230 | { | |
1231 | if ((have_full_symbols () || have_partial_symbols ()) | |
1232 | && from_tty | |
0430b0d6 AS |
1233 | && (symfile_objfile |
1234 | ? !query (_("Discard symbol table from `%s'? "), | |
1235 | symfile_objfile->name) | |
1236 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1237 | error (_("Not confirmed.")); |
1adeb98a | 1238 | |
0133421a JK |
1239 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1240 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1241 | no_shared_libraries (NULL, from_tty); |
1242 | ||
0133421a JK |
1243 | free_all_objfiles (); |
1244 | ||
adb7f338 | 1245 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1246 | if (from_tty) |
1247 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1248 | } |
1249 | ||
5b5d99cf JB |
1250 | static char * |
1251 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1252 | { | |
1253 | asection *sect; | |
1254 | bfd_size_type debuglink_size; | |
1255 | unsigned long crc32; | |
1256 | char *contents; | |
1257 | int crc_offset; | |
5417f6dc | 1258 | |
5b5d99cf JB |
1259 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1260 | ||
1261 | if (sect == NULL) | |
1262 | return NULL; | |
1263 | ||
1264 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1265 | |
5b5d99cf JB |
1266 | contents = xmalloc (debuglink_size); |
1267 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1268 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1269 | ||
1270 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1271 | crc_offset = strlen (contents) + 1; | |
1272 | crc_offset = (crc_offset + 3) & ~3; | |
1273 | ||
1274 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1275 | |
5b5d99cf JB |
1276 | *crc32_out = crc32; |
1277 | return contents; | |
1278 | } | |
1279 | ||
1280 | static int | |
287ccc17 | 1281 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1282 | struct objfile *parent_objfile) |
5b5d99cf JB |
1283 | { |
1284 | unsigned long file_crc = 0; | |
f1838a98 | 1285 | bfd *abfd; |
777ea8f1 | 1286 | gdb_byte buffer[8*1024]; |
5b5d99cf | 1287 | int count; |
32a0e547 JK |
1288 | struct stat parent_stat, abfd_stat; |
1289 | ||
1290 | /* Find a separate debug info file as if symbols would be present in | |
1291 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1292 | section can contain just the basename of PARENT_OBJFILE without any | |
1293 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
1294 | the separate debug infos with the same basename can exist. */ | |
1295 | ||
1296 | if (strcmp (name, parent_objfile->name) == 0) | |
1297 | return 0; | |
5b5d99cf | 1298 | |
874f5765 | 1299 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1300 | |
1301 | if (!abfd) | |
5b5d99cf JB |
1302 | return 0; |
1303 | ||
32a0e547 JK |
1304 | /* Verify symlinks were not the cause of strcmp name difference above. |
1305 | ||
1306 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1307 | st_ino; they always set it to zero. (Windows does provide a | |
1308 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1309 | case. While there is no guarantee that a system that provides | |
1310 | meaningful inode numbers will never set st_ino to zero, this is | |
1311 | merely an optimization, so we do not need to worry about false | |
1312 | negatives. */ | |
1313 | ||
1314 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
1315 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0 | |
1316 | && abfd_stat.st_dev == parent_stat.st_dev | |
1317 | && abfd_stat.st_ino == parent_stat.st_ino | |
1318 | && abfd_stat.st_ino != 0) | |
1319 | { | |
1320 | bfd_close (abfd); | |
1321 | return 0; | |
1322 | } | |
1323 | ||
f1838a98 | 1324 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1325 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1326 | ||
f1838a98 | 1327 | bfd_close (abfd); |
5b5d99cf | 1328 | |
287ccc17 JK |
1329 | if (crc != file_crc) |
1330 | { | |
1331 | warning (_("the debug information found in \"%s\"" | |
1332 | " does not match \"%s\" (CRC mismatch).\n"), | |
32a0e547 | 1333 | name, parent_objfile->name); |
287ccc17 JK |
1334 | return 0; |
1335 | } | |
1336 | ||
1337 | return 1; | |
5b5d99cf JB |
1338 | } |
1339 | ||
aa28a74e | 1340 | char *debug_file_directory = NULL; |
920d2a44 AC |
1341 | static void |
1342 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1343 | struct cmd_list_element *c, const char *value) | |
1344 | { | |
1345 | fprintf_filtered (file, _("\ | |
1346 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1347 | value); | |
1348 | } | |
5b5d99cf JB |
1349 | |
1350 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1351 | #define DEBUG_SUBDIRECTORY ".debug" | |
1352 | #endif | |
1353 | ||
9cce227f TG |
1354 | char * |
1355 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1356 | { | |
952a6d41 | 1357 | char *basename, *debugdir; |
9cce227f TG |
1358 | char *dir = NULL; |
1359 | char *debugfile = NULL; | |
1360 | char *canon_name = NULL; | |
9cce227f TG |
1361 | unsigned long crc32; |
1362 | int i; | |
5b5d99cf JB |
1363 | |
1364 | basename = get_debug_link_info (objfile, &crc32); | |
1365 | ||
1366 | if (basename == NULL) | |
287ccc17 JK |
1367 | /* There's no separate debug info, hence there's no way we could |
1368 | load it => no warning. */ | |
25522fae | 1369 | goto cleanup_return_debugfile; |
5417f6dc | 1370 | |
5b5d99cf JB |
1371 | dir = xstrdup (objfile->name); |
1372 | ||
fe36c4f4 JB |
1373 | /* Strip off the final filename part, leaving the directory name, |
1374 | followed by a slash. Objfile names should always be absolute and | |
1375 | tilde-expanded, so there should always be a slash in there | |
1376 | somewhere. */ | |
5b5d99cf JB |
1377 | for (i = strlen(dir) - 1; i >= 0; i--) |
1378 | { | |
1379 | if (IS_DIR_SEPARATOR (dir[i])) | |
1380 | break; | |
1381 | } | |
fe36c4f4 | 1382 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1383 | dir[i+1] = '\0'; |
5417f6dc | 1384 | |
1ffa32ee JK |
1385 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1386 | canon_name = lrealpath (dir); | |
1387 | i = strlen (dir); | |
1388 | if (canon_name && strlen (canon_name) > i) | |
1389 | i = strlen (canon_name); | |
1390 | ||
25522fae JK |
1391 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1392 | + i | |
1393 | + strlen (DEBUG_SUBDIRECTORY) | |
1394 | + strlen ("/") | |
1395 | + strlen (basename) | |
1396 | + 1); | |
5b5d99cf JB |
1397 | |
1398 | /* First try in the same directory as the original file. */ | |
1399 | strcpy (debugfile, dir); | |
1400 | strcat (debugfile, basename); | |
1401 | ||
32a0e547 | 1402 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1403 | goto cleanup_return_debugfile; |
5417f6dc | 1404 | |
5b5d99cf JB |
1405 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1406 | strcpy (debugfile, dir); | |
1407 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1408 | strcat (debugfile, "/"); | |
1409 | strcat (debugfile, basename); | |
1410 | ||
32a0e547 | 1411 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1412 | goto cleanup_return_debugfile; |
5417f6dc | 1413 | |
24ddea62 JK |
1414 | /* Then try in the global debugfile directories. |
1415 | ||
1416 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1417 | cause "/..." lookups. */ | |
5417f6dc | 1418 | |
24ddea62 JK |
1419 | debugdir = debug_file_directory; |
1420 | do | |
aa28a74e | 1421 | { |
24ddea62 JK |
1422 | char *debugdir_end; |
1423 | ||
1424 | while (*debugdir == DIRNAME_SEPARATOR) | |
1425 | debugdir++; | |
1426 | ||
1427 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1428 | if (debugdir_end == NULL) | |
1429 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1430 | ||
1431 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1432 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1433 | strcat (debugfile, "/"); |
24ddea62 | 1434 | strcat (debugfile, dir); |
aa28a74e DJ |
1435 | strcat (debugfile, basename); |
1436 | ||
32a0e547 | 1437 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1438 | goto cleanup_return_debugfile; |
24ddea62 JK |
1439 | |
1440 | /* If the file is in the sysroot, try using its base path in the | |
1441 | global debugfile directory. */ | |
1442 | if (canon_name | |
1443 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1444 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1445 | { | |
1446 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1447 | debugfile[debugdir_end - debugdir] = 0; | |
1448 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1449 | strcat (debugfile, "/"); | |
1450 | strcat (debugfile, basename); | |
1451 | ||
32a0e547 | 1452 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
24ddea62 JK |
1453 | goto cleanup_return_debugfile; |
1454 | } | |
1455 | ||
1456 | debugdir = debugdir_end; | |
aa28a74e | 1457 | } |
24ddea62 | 1458 | while (*debugdir != 0); |
aa28a74e | 1459 | |
25522fae JK |
1460 | xfree (debugfile); |
1461 | debugfile = NULL; | |
aa28a74e | 1462 | |
25522fae JK |
1463 | cleanup_return_debugfile: |
1464 | xfree (canon_name); | |
5b5d99cf JB |
1465 | xfree (basename); |
1466 | xfree (dir); | |
25522fae | 1467 | return debugfile; |
5b5d99cf JB |
1468 | } |
1469 | ||
1470 | ||
c906108c SS |
1471 | /* This is the symbol-file command. Read the file, analyze its |
1472 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1473 | the command is rather bizarre: |
1474 | ||
1475 | 1. The function buildargv implements various quoting conventions | |
1476 | which are undocumented and have little or nothing in common with | |
1477 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1478 | ||
1479 | 2. Options are used, which are not generally used in GDB (perhaps | |
1480 | "set mapped on", "set readnow on" would be better) | |
1481 | ||
1482 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1483 | conventions (because it is confusing and inconvenient). */ |
1484 | ||
1485 | void | |
fba45db2 | 1486 | symbol_file_command (char *args, int from_tty) |
c906108c | 1487 | { |
c906108c SS |
1488 | dont_repeat (); |
1489 | ||
1490 | if (args == NULL) | |
1491 | { | |
1adeb98a | 1492 | symbol_file_clear (from_tty); |
c906108c SS |
1493 | } |
1494 | else | |
1495 | { | |
d1a41061 | 1496 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1497 | int flags = OBJF_USERLOADED; |
1498 | struct cleanup *cleanups; | |
1499 | char *name = NULL; | |
1500 | ||
7a292a7a | 1501 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1502 | while (*argv != NULL) |
1503 | { | |
78a4a9b9 AC |
1504 | if (strcmp (*argv, "-readnow") == 0) |
1505 | flags |= OBJF_READNOW; | |
1506 | else if (**argv == '-') | |
8a3fe4f8 | 1507 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1508 | else |
1509 | { | |
cb2f3a29 | 1510 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1511 | name = *argv; |
78a4a9b9 | 1512 | } |
cb2f3a29 | 1513 | |
c906108c SS |
1514 | argv++; |
1515 | } | |
1516 | ||
1517 | if (name == NULL) | |
cb2f3a29 MK |
1518 | error (_("no symbol file name was specified")); |
1519 | ||
c906108c SS |
1520 | do_cleanups (cleanups); |
1521 | } | |
1522 | } | |
1523 | ||
1524 | /* Set the initial language. | |
1525 | ||
cb2f3a29 MK |
1526 | FIXME: A better solution would be to record the language in the |
1527 | psymtab when reading partial symbols, and then use it (if known) to | |
1528 | set the language. This would be a win for formats that encode the | |
1529 | language in an easily discoverable place, such as DWARF. For | |
1530 | stabs, we can jump through hoops looking for specially named | |
1531 | symbols or try to intuit the language from the specific type of | |
1532 | stabs we find, but we can't do that until later when we read in | |
1533 | full symbols. */ | |
c906108c | 1534 | |
8b60591b | 1535 | void |
fba45db2 | 1536 | set_initial_language (void) |
c906108c | 1537 | { |
ccefe4c4 | 1538 | char *filename; |
c5aa993b | 1539 | enum language lang = language_unknown; |
c906108c | 1540 | |
ccefe4c4 TT |
1541 | filename = find_main_filename (); |
1542 | if (filename != NULL) | |
1543 | lang = deduce_language_from_filename (filename); | |
cb2f3a29 | 1544 | |
ccefe4c4 TT |
1545 | if (lang == language_unknown) |
1546 | { | |
1547 | /* Make C the default language */ | |
1548 | lang = language_c; | |
c906108c | 1549 | } |
ccefe4c4 TT |
1550 | |
1551 | set_language (lang); | |
1552 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1553 | } |
1554 | ||
874f5765 TG |
1555 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1556 | open it normally. */ | |
1557 | ||
1558 | bfd * | |
1559 | bfd_open_maybe_remote (const char *name) | |
1560 | { | |
1561 | if (remote_filename_p (name)) | |
1562 | return remote_bfd_open (name, gnutarget); | |
1563 | else | |
1564 | return bfd_openr (name, gnutarget); | |
1565 | } | |
1566 | ||
1567 | ||
cb2f3a29 MK |
1568 | /* Open the file specified by NAME and hand it off to BFD for |
1569 | preliminary analysis. Return a newly initialized bfd *, which | |
1570 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1571 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1572 | |
1573 | bfd * | |
fba45db2 | 1574 | symfile_bfd_open (char *name) |
c906108c SS |
1575 | { |
1576 | bfd *sym_bfd; | |
1577 | int desc; | |
1578 | char *absolute_name; | |
1579 | ||
f1838a98 UW |
1580 | if (remote_filename_p (name)) |
1581 | { | |
1582 | name = xstrdup (name); | |
1583 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1584 | if (!sym_bfd) | |
1585 | { | |
1586 | make_cleanup (xfree, name); | |
1587 | error (_("`%s': can't open to read symbols: %s."), name, | |
1588 | bfd_errmsg (bfd_get_error ())); | |
1589 | } | |
1590 | ||
1591 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1592 | { | |
1593 | bfd_close (sym_bfd); | |
1594 | make_cleanup (xfree, name); | |
1595 | error (_("`%s': can't read symbols: %s."), name, | |
1596 | bfd_errmsg (bfd_get_error ())); | |
1597 | } | |
1598 | ||
1599 | return sym_bfd; | |
1600 | } | |
1601 | ||
cb2f3a29 | 1602 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1603 | |
1604 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1605 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1606 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1607 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1608 | if (desc < 0) |
1609 | { | |
1610 | char *exename = alloca (strlen (name) + 5); | |
1611 | strcat (strcpy (exename, name), ".exe"); | |
014d698b | 1612 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1613 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1614 | } |
1615 | #endif | |
1616 | if (desc < 0) | |
1617 | { | |
b8c9b27d | 1618 | make_cleanup (xfree, name); |
c906108c SS |
1619 | perror_with_name (name); |
1620 | } | |
cb2f3a29 MK |
1621 | |
1622 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1623 | bfd. It'll be freed in free_objfile(). */ | |
1624 | xfree (name); | |
1625 | name = absolute_name; | |
c906108c | 1626 | |
9f76c2cd | 1627 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1628 | if (!sym_bfd) |
1629 | { | |
1630 | close (desc); | |
b8c9b27d | 1631 | make_cleanup (xfree, name); |
f1838a98 | 1632 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1633 | bfd_errmsg (bfd_get_error ())); |
1634 | } | |
549c1eea | 1635 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1636 | |
1637 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1638 | { | |
cb2f3a29 MK |
1639 | /* FIXME: should be checking for errors from bfd_close (for one |
1640 | thing, on error it does not free all the storage associated | |
1641 | with the bfd). */ | |
1642 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1643 | make_cleanup (xfree, name); |
f1838a98 | 1644 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1645 | bfd_errmsg (bfd_get_error ())); |
1646 | } | |
cb2f3a29 | 1647 | |
4f6f9936 JK |
1648 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1649 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1650 | ||
cb2f3a29 | 1651 | return sym_bfd; |
c906108c SS |
1652 | } |
1653 | ||
cb2f3a29 MK |
1654 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1655 | the section was not found. */ | |
1656 | ||
0e931cf0 JB |
1657 | int |
1658 | get_section_index (struct objfile *objfile, char *section_name) | |
1659 | { | |
1660 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1661 | |
0e931cf0 JB |
1662 | if (sect) |
1663 | return sect->index; | |
1664 | else | |
1665 | return -1; | |
1666 | } | |
1667 | ||
cb2f3a29 MK |
1668 | /* Link SF into the global symtab_fns list. Called on startup by the |
1669 | _initialize routine in each object file format reader, to register | |
1670 | information about each format the the reader is prepared to | |
1671 | handle. */ | |
c906108c SS |
1672 | |
1673 | void | |
fba45db2 | 1674 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1675 | { |
1676 | sf->next = symtab_fns; | |
1677 | symtab_fns = sf; | |
1678 | } | |
1679 | ||
cb2f3a29 MK |
1680 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1681 | either returns or calls error(). The result is an initialized | |
1682 | struct sym_fns in the objfile structure, that contains cached | |
1683 | information about the symbol file. */ | |
c906108c | 1684 | |
31d99776 DJ |
1685 | static struct sym_fns * |
1686 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1687 | { |
1688 | struct sym_fns *sf; | |
31d99776 | 1689 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1690 | |
75245b24 MS |
1691 | if (our_flavour == bfd_target_srec_flavour |
1692 | || our_flavour == bfd_target_ihex_flavour | |
1693 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1694 | return NULL; /* No symbols. */ |
75245b24 | 1695 | |
c5aa993b | 1696 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1697 | if (our_flavour == sf->sym_flavour) |
1698 | return sf; | |
cb2f3a29 | 1699 | |
8a3fe4f8 | 1700 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1701 | bfd_get_target (abfd)); |
c906108c SS |
1702 | } |
1703 | \f | |
cb2f3a29 | 1704 | |
c906108c SS |
1705 | /* This function runs the load command of our current target. */ |
1706 | ||
1707 | static void | |
fba45db2 | 1708 | load_command (char *arg, int from_tty) |
c906108c | 1709 | { |
4487aabf PA |
1710 | /* The user might be reloading because the binary has changed. Take |
1711 | this opportunity to check. */ | |
1712 | reopen_exec_file (); | |
1713 | reread_symbols (); | |
1714 | ||
c906108c | 1715 | if (arg == NULL) |
1986bccd AS |
1716 | { |
1717 | char *parg; | |
1718 | int count = 0; | |
1719 | ||
1720 | parg = arg = get_exec_file (1); | |
1721 | ||
1722 | /* Count how many \ " ' tab space there are in the name. */ | |
1723 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1724 | { | |
1725 | parg++; | |
1726 | count++; | |
1727 | } | |
1728 | ||
1729 | if (count) | |
1730 | { | |
1731 | /* We need to quote this string so buildargv can pull it apart. */ | |
1732 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1733 | char *ptemp = temp; | |
1734 | char *prev; | |
1735 | ||
1736 | make_cleanup (xfree, temp); | |
1737 | ||
1738 | prev = parg = arg; | |
1739 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1740 | { | |
1741 | strncpy (ptemp, prev, parg - prev); | |
1742 | ptemp += parg - prev; | |
1743 | prev = parg++; | |
1744 | *ptemp++ = '\\'; | |
1745 | } | |
1746 | strcpy (ptemp, prev); | |
1747 | ||
1748 | arg = temp; | |
1749 | } | |
1750 | } | |
1751 | ||
c906108c | 1752 | target_load (arg, from_tty); |
2889e661 JB |
1753 | |
1754 | /* After re-loading the executable, we don't really know which | |
1755 | overlays are mapped any more. */ | |
1756 | overlay_cache_invalid = 1; | |
c906108c SS |
1757 | } |
1758 | ||
1759 | /* This version of "load" should be usable for any target. Currently | |
1760 | it is just used for remote targets, not inftarg.c or core files, | |
1761 | on the theory that only in that case is it useful. | |
1762 | ||
1763 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1764 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1765 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1766 | performance compares. */ | |
917317f4 | 1767 | |
917317f4 JM |
1768 | static int validate_download = 0; |
1769 | ||
e4f9b4d5 MS |
1770 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1771 | ||
1772 | static void | |
1773 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1774 | { | |
1775 | bfd_size_type *sum = data; | |
1776 | ||
2c500098 | 1777 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1778 | } |
1779 | ||
1780 | /* Opaque data for load_section_callback. */ | |
1781 | struct load_section_data { | |
1782 | unsigned long load_offset; | |
a76d924d DJ |
1783 | struct load_progress_data *progress_data; |
1784 | VEC(memory_write_request_s) *requests; | |
1785 | }; | |
1786 | ||
1787 | /* Opaque data for load_progress. */ | |
1788 | struct load_progress_data { | |
1789 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1790 | unsigned long write_count; |
1791 | unsigned long data_count; | |
1792 | bfd_size_type total_size; | |
a76d924d DJ |
1793 | }; |
1794 | ||
1795 | /* Opaque data for load_progress for a single section. */ | |
1796 | struct load_progress_section_data { | |
1797 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1798 | |
a76d924d | 1799 | /* Per-section data. */ |
cf7a04e8 DJ |
1800 | const char *section_name; |
1801 | ULONGEST section_sent; | |
1802 | ULONGEST section_size; | |
1803 | CORE_ADDR lma; | |
1804 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1805 | }; |
1806 | ||
a76d924d | 1807 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1808 | |
1809 | static void | |
1810 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1811 | { | |
a76d924d DJ |
1812 | struct load_progress_section_data *args = untyped_arg; |
1813 | struct load_progress_data *totals; | |
1814 | ||
1815 | if (args == NULL) | |
1816 | /* Writing padding data. No easy way to get at the cumulative | |
1817 | stats, so just ignore this. */ | |
1818 | return; | |
1819 | ||
1820 | totals = args->cumulative; | |
1821 | ||
1822 | if (bytes == 0 && args->section_sent == 0) | |
1823 | { | |
1824 | /* The write is just starting. Let the user know we've started | |
1825 | this section. */ | |
5af949e3 UW |
1826 | ui_out_message (uiout, 0, "Loading section %s, size %s lma %s\n", |
1827 | args->section_name, hex_string (args->section_size), | |
1828 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1829 | return; |
1830 | } | |
cf7a04e8 DJ |
1831 | |
1832 | if (validate_download) | |
1833 | { | |
1834 | /* Broken memories and broken monitors manifest themselves here | |
1835 | when bring new computers to life. This doubles already slow | |
1836 | downloads. */ | |
1837 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1838 | might add a verify_memory() method to the target vector and | |
1839 | then use that. remote.c could implement that method using | |
1840 | the ``qCRC'' packet. */ | |
1841 | gdb_byte *check = xmalloc (bytes); | |
1842 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1843 | ||
1844 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1845 | error (_("Download verify read failed at %s"), |
1846 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1847 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1848 | error (_("Download verify compare failed at %s"), |
1849 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1850 | do_cleanups (verify_cleanups); |
1851 | } | |
a76d924d | 1852 | totals->data_count += bytes; |
cf7a04e8 DJ |
1853 | args->lma += bytes; |
1854 | args->buffer += bytes; | |
a76d924d | 1855 | totals->write_count += 1; |
cf7a04e8 DJ |
1856 | args->section_sent += bytes; |
1857 | if (quit_flag | |
1858 | || (deprecated_ui_load_progress_hook != NULL | |
1859 | && deprecated_ui_load_progress_hook (args->section_name, | |
1860 | args->section_sent))) | |
1861 | error (_("Canceled the download")); | |
1862 | ||
1863 | if (deprecated_show_load_progress != NULL) | |
1864 | deprecated_show_load_progress (args->section_name, | |
1865 | args->section_sent, | |
1866 | args->section_size, | |
a76d924d DJ |
1867 | totals->data_count, |
1868 | totals->total_size); | |
cf7a04e8 DJ |
1869 | } |
1870 | ||
e4f9b4d5 MS |
1871 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1872 | ||
1873 | static void | |
1874 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1875 | { | |
a76d924d | 1876 | struct memory_write_request *new_request; |
e4f9b4d5 | 1877 | struct load_section_data *args = data; |
a76d924d | 1878 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1879 | bfd_size_type size = bfd_get_section_size (asec); |
1880 | gdb_byte *buffer; | |
cf7a04e8 | 1881 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1882 | |
cf7a04e8 DJ |
1883 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1884 | return; | |
e4f9b4d5 | 1885 | |
cf7a04e8 DJ |
1886 | if (size == 0) |
1887 | return; | |
e4f9b4d5 | 1888 | |
a76d924d DJ |
1889 | new_request = VEC_safe_push (memory_write_request_s, |
1890 | args->requests, NULL); | |
1891 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1892 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1893 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1894 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1895 | new_request->data = xmalloc (size); | |
1896 | new_request->baton = section_data; | |
cf7a04e8 | 1897 | |
a76d924d | 1898 | buffer = new_request->data; |
cf7a04e8 | 1899 | |
a76d924d DJ |
1900 | section_data->cumulative = args->progress_data; |
1901 | section_data->section_name = sect_name; | |
1902 | section_data->section_size = size; | |
1903 | section_data->lma = new_request->begin; | |
1904 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1905 | |
1906 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1907 | } |
1908 | ||
1909 | /* Clean up an entire memory request vector, including load | |
1910 | data and progress records. */ | |
cf7a04e8 | 1911 | |
a76d924d DJ |
1912 | static void |
1913 | clear_memory_write_data (void *arg) | |
1914 | { | |
1915 | VEC(memory_write_request_s) **vec_p = arg; | |
1916 | VEC(memory_write_request_s) *vec = *vec_p; | |
1917 | int i; | |
1918 | struct memory_write_request *mr; | |
cf7a04e8 | 1919 | |
a76d924d DJ |
1920 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1921 | { | |
1922 | xfree (mr->data); | |
1923 | xfree (mr->baton); | |
1924 | } | |
1925 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1926 | } |
1927 | ||
c906108c | 1928 | void |
917317f4 | 1929 | generic_load (char *args, int from_tty) |
c906108c | 1930 | { |
c906108c | 1931 | bfd *loadfile_bfd; |
2b71414d | 1932 | struct timeval start_time, end_time; |
917317f4 | 1933 | char *filename; |
1986bccd | 1934 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1935 | struct load_section_data cbdata; |
a76d924d DJ |
1936 | struct load_progress_data total_progress; |
1937 | ||
e4f9b4d5 | 1938 | CORE_ADDR entry; |
1986bccd | 1939 | char **argv; |
e4f9b4d5 | 1940 | |
a76d924d DJ |
1941 | memset (&cbdata, 0, sizeof (cbdata)); |
1942 | memset (&total_progress, 0, sizeof (total_progress)); | |
1943 | cbdata.progress_data = &total_progress; | |
1944 | ||
1945 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1946 | |
d1a41061 PP |
1947 | if (args == NULL) |
1948 | error_no_arg (_("file to load")); | |
1986bccd | 1949 | |
d1a41061 | 1950 | argv = gdb_buildargv (args); |
1986bccd AS |
1951 | make_cleanup_freeargv (argv); |
1952 | ||
1953 | filename = tilde_expand (argv[0]); | |
1954 | make_cleanup (xfree, filename); | |
1955 | ||
1956 | if (argv[1] != NULL) | |
917317f4 JM |
1957 | { |
1958 | char *endptr; | |
ba5f2f8a | 1959 | |
1986bccd AS |
1960 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1961 | ||
1962 | /* If the last word was not a valid number then | |
1963 | treat it as a file name with spaces in. */ | |
1964 | if (argv[1] == endptr) | |
1965 | error (_("Invalid download offset:%s."), argv[1]); | |
1966 | ||
1967 | if (argv[2] != NULL) | |
1968 | error (_("Too many parameters.")); | |
917317f4 | 1969 | } |
c906108c | 1970 | |
917317f4 | 1971 | /* Open the file for loading. */ |
c906108c SS |
1972 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1973 | if (loadfile_bfd == NULL) | |
1974 | { | |
1975 | perror_with_name (filename); | |
1976 | return; | |
1977 | } | |
917317f4 | 1978 | |
c906108c SS |
1979 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1980 | on error it does not free all the storage associated with the | |
1981 | bfd). */ | |
5c65bbb6 | 1982 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1983 | |
c5aa993b | 1984 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1985 | { |
8a3fe4f8 | 1986 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1987 | bfd_errmsg (bfd_get_error ())); |
1988 | } | |
c5aa993b | 1989 | |
5417f6dc | 1990 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1991 | (void *) &total_progress.total_size); |
1992 | ||
1993 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1994 | |
2b71414d | 1995 | gettimeofday (&start_time, NULL); |
c906108c | 1996 | |
a76d924d DJ |
1997 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1998 | load_progress) != 0) | |
1999 | error (_("Load failed")); | |
c906108c | 2000 | |
2b71414d | 2001 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2002 | |
e4f9b4d5 | 2003 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2004 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2005 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2006 | ui_out_text (uiout, ", load size "); |
a76d924d | 2007 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2008 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2009 | /* We were doing this in remote-mips.c, I suspect it is right |
2010 | for other targets too. */ | |
fb14de7b | 2011 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2012 | |
38963c97 DJ |
2013 | /* Reset breakpoints, now that we have changed the load image. For |
2014 | instance, breakpoints may have been set (or reset, by | |
2015 | post_create_inferior) while connected to the target but before we | |
2016 | loaded the program. In that case, the prologue analyzer could | |
2017 | have read instructions from the target to find the right | |
2018 | breakpoint locations. Loading has changed the contents of that | |
2019 | memory. */ | |
2020 | ||
2021 | breakpoint_re_set (); | |
2022 | ||
7ca9f392 AC |
2023 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2024 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2025 | was commented out), making the call confuses GDB if more than one | |
2026 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2027 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2028 | |
a76d924d DJ |
2029 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2030 | total_progress.write_count, | |
2031 | &start_time, &end_time); | |
c906108c SS |
2032 | |
2033 | do_cleanups (old_cleanups); | |
2034 | } | |
2035 | ||
2036 | /* Report how fast the transfer went. */ | |
2037 | ||
917317f4 JM |
2038 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2039 | replaced by print_transfer_performance (with a very different | |
2040 | function signature). */ | |
2041 | ||
c906108c | 2042 | void |
fba45db2 KB |
2043 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2044 | time_t end_time) | |
c906108c | 2045 | { |
2b71414d DJ |
2046 | struct timeval start, end; |
2047 | ||
2048 | start.tv_sec = start_time; | |
2049 | start.tv_usec = 0; | |
2050 | end.tv_sec = end_time; | |
2051 | end.tv_usec = 0; | |
2052 | ||
2053 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2054 | } |
2055 | ||
2056 | void | |
d9fcf2fb | 2057 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2058 | unsigned long data_count, |
2059 | unsigned long write_count, | |
2b71414d DJ |
2060 | const struct timeval *start_time, |
2061 | const struct timeval *end_time) | |
917317f4 | 2062 | { |
9f43d28c | 2063 | ULONGEST time_count; |
2b71414d DJ |
2064 | |
2065 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2066 | accuracy and overflow. */ | |
2067 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2068 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2069 | ||
8b93c638 JM |
2070 | ui_out_text (uiout, "Transfer rate: "); |
2071 | if (time_count > 0) | |
2072 | { | |
9f43d28c DJ |
2073 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2074 | ||
2075 | if (ui_out_is_mi_like_p (uiout)) | |
2076 | { | |
2077 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2078 | ui_out_text (uiout, " bits/sec"); | |
2079 | } | |
2080 | else if (rate < 1024) | |
2081 | { | |
2082 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2083 | ui_out_text (uiout, " bytes/sec"); | |
2084 | } | |
2085 | else | |
2086 | { | |
2087 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2088 | ui_out_text (uiout, " KB/sec"); | |
2089 | } | |
8b93c638 JM |
2090 | } |
2091 | else | |
2092 | { | |
ba5f2f8a | 2093 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2094 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2095 | } |
2096 | if (write_count > 0) | |
2097 | { | |
2098 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2099 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2100 | ui_out_text (uiout, " bytes/write"); |
2101 | } | |
2102 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2103 | } |
2104 | ||
2105 | /* This function allows the addition of incrementally linked object files. | |
2106 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2107 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2108 | special case syntax for the rombug target (Rombug is the boot | |
2109 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2110 | rombug case, the user doesn't need to supply a text address, | |
2111 | instead a call to target_link() (in target.c) would supply the | |
2112 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 2113 | |
c906108c | 2114 | static void |
fba45db2 | 2115 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2116 | { |
5af949e3 | 2117 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2118 | char *filename = NULL; |
2df3850c | 2119 | int flags = OBJF_USERLOADED; |
c906108c | 2120 | char *arg; |
db162d44 | 2121 | int section_index = 0; |
2acceee2 JM |
2122 | int argcnt = 0; |
2123 | int sec_num = 0; | |
2124 | int i; | |
db162d44 EZ |
2125 | int expecting_sec_name = 0; |
2126 | int expecting_sec_addr = 0; | |
5b96932b | 2127 | char **argv; |
db162d44 | 2128 | |
a39a16c4 | 2129 | struct sect_opt |
2acceee2 | 2130 | { |
2acceee2 JM |
2131 | char *name; |
2132 | char *value; | |
a39a16c4 | 2133 | }; |
db162d44 | 2134 | |
a39a16c4 MM |
2135 | struct section_addr_info *section_addrs; |
2136 | struct sect_opt *sect_opts = NULL; | |
2137 | size_t num_sect_opts = 0; | |
3017564a | 2138 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2139 | |
a39a16c4 | 2140 | num_sect_opts = 16; |
5417f6dc | 2141 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2142 | * sizeof (struct sect_opt)); |
2143 | ||
c906108c SS |
2144 | dont_repeat (); |
2145 | ||
2146 | if (args == NULL) | |
8a3fe4f8 | 2147 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2148 | |
d1a41061 | 2149 | argv = gdb_buildargv (args); |
5b96932b | 2150 | make_cleanup_freeargv (argv); |
db162d44 | 2151 | |
5b96932b AS |
2152 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2153 | { | |
2154 | /* Process the argument. */ | |
db162d44 | 2155 | if (argcnt == 0) |
c906108c | 2156 | { |
db162d44 EZ |
2157 | /* The first argument is the file name. */ |
2158 | filename = tilde_expand (arg); | |
3017564a | 2159 | make_cleanup (xfree, filename); |
c906108c | 2160 | } |
db162d44 | 2161 | else |
7a78ae4e ND |
2162 | if (argcnt == 1) |
2163 | { | |
2164 | /* The second argument is always the text address at which | |
2165 | to load the program. */ | |
2166 | sect_opts[section_index].name = ".text"; | |
2167 | sect_opts[section_index].value = arg; | |
f414f22f | 2168 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2169 | { |
2170 | num_sect_opts *= 2; | |
5417f6dc | 2171 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2172 | xrealloc (sect_opts, |
5417f6dc | 2173 | num_sect_opts |
a39a16c4 MM |
2174 | * sizeof (struct sect_opt))); |
2175 | } | |
7a78ae4e ND |
2176 | } |
2177 | else | |
2178 | { | |
2179 | /* It's an option (starting with '-') or it's an argument | |
2180 | to an option */ | |
2181 | ||
2182 | if (*arg == '-') | |
2183 | { | |
78a4a9b9 AC |
2184 | if (strcmp (arg, "-readnow") == 0) |
2185 | flags |= OBJF_READNOW; | |
2186 | else if (strcmp (arg, "-s") == 0) | |
2187 | { | |
2188 | expecting_sec_name = 1; | |
2189 | expecting_sec_addr = 1; | |
2190 | } | |
7a78ae4e ND |
2191 | } |
2192 | else | |
2193 | { | |
2194 | if (expecting_sec_name) | |
db162d44 | 2195 | { |
7a78ae4e ND |
2196 | sect_opts[section_index].name = arg; |
2197 | expecting_sec_name = 0; | |
db162d44 EZ |
2198 | } |
2199 | else | |
7a78ae4e ND |
2200 | if (expecting_sec_addr) |
2201 | { | |
2202 | sect_opts[section_index].value = arg; | |
2203 | expecting_sec_addr = 0; | |
f414f22f | 2204 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2205 | { |
2206 | num_sect_opts *= 2; | |
5417f6dc | 2207 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2208 | xrealloc (sect_opts, |
5417f6dc | 2209 | num_sect_opts |
a39a16c4 MM |
2210 | * sizeof (struct sect_opt))); |
2211 | } | |
7a78ae4e ND |
2212 | } |
2213 | else | |
8a3fe4f8 | 2214 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2215 | } |
2216 | } | |
c906108c | 2217 | } |
c906108c | 2218 | |
927890d0 JB |
2219 | /* This command takes at least two arguments. The first one is a |
2220 | filename, and the second is the address where this file has been | |
2221 | loaded. Abort now if this address hasn't been provided by the | |
2222 | user. */ | |
2223 | if (section_index < 1) | |
2224 | error (_("The address where %s has been loaded is missing"), filename); | |
2225 | ||
db162d44 EZ |
2226 | /* Print the prompt for the query below. And save the arguments into |
2227 | a sect_addr_info structure to be passed around to other | |
2228 | functions. We have to split this up into separate print | |
bb599908 | 2229 | statements because hex_string returns a local static |
db162d44 | 2230 | string. */ |
5417f6dc | 2231 | |
a3f17187 | 2232 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2233 | section_addrs = alloc_section_addr_info (section_index); |
2234 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2235 | for (i = 0; i < section_index; i++) |
c906108c | 2236 | { |
db162d44 EZ |
2237 | CORE_ADDR addr; |
2238 | char *val = sect_opts[i].value; | |
2239 | char *sec = sect_opts[i].name; | |
5417f6dc | 2240 | |
ae822768 | 2241 | addr = parse_and_eval_address (val); |
db162d44 | 2242 | |
db162d44 EZ |
2243 | /* Here we store the section offsets in the order they were |
2244 | entered on the command line. */ | |
a39a16c4 MM |
2245 | section_addrs->other[sec_num].name = sec; |
2246 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2247 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2248 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2249 | sec_num++; |
2250 | ||
5417f6dc | 2251 | /* The object's sections are initialized when a |
db162d44 | 2252 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2253 | This happens in reread_symbols. |
db162d44 EZ |
2254 | At this point, we don't know what file type this is, |
2255 | so we can't determine what section names are valid. */ | |
2acceee2 | 2256 | } |
db162d44 | 2257 | |
2acceee2 | 2258 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2259 | error (_("Not confirmed.")); |
c906108c | 2260 | |
7eedccfa PP |
2261 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2262 | section_addrs, flags); | |
c906108c SS |
2263 | |
2264 | /* Getting new symbols may change our opinion about what is | |
2265 | frameless. */ | |
2266 | reinit_frame_cache (); | |
db162d44 | 2267 | do_cleanups (my_cleanups); |
c906108c SS |
2268 | } |
2269 | \f | |
70992597 | 2270 | |
c906108c SS |
2271 | /* Re-read symbols if a symbol-file has changed. */ |
2272 | void | |
fba45db2 | 2273 | reread_symbols (void) |
c906108c SS |
2274 | { |
2275 | struct objfile *objfile; | |
2276 | long new_modtime; | |
2277 | int reread_one = 0; | |
2278 | struct stat new_statbuf; | |
2279 | int res; | |
2280 | ||
2281 | /* With the addition of shared libraries, this should be modified, | |
2282 | the load time should be saved in the partial symbol tables, since | |
2283 | different tables may come from different source files. FIXME. | |
2284 | This routine should then walk down each partial symbol table | |
2285 | and see if the symbol table that it originates from has been changed */ | |
2286 | ||
c5aa993b JM |
2287 | for (objfile = object_files; objfile; objfile = objfile->next) |
2288 | { | |
9cce227f TG |
2289 | /* solib-sunos.c creates one objfile with obfd. */ |
2290 | if (objfile->obfd == NULL) | |
2291 | continue; | |
2292 | ||
2293 | /* Separate debug objfiles are handled in the main objfile. */ | |
2294 | if (objfile->separate_debug_objfile_backlink) | |
2295 | continue; | |
2296 | ||
02aeec7b JB |
2297 | /* If this object is from an archive (what you usually create with |
2298 | `ar', often called a `static library' on most systems, though | |
2299 | a `shared library' on AIX is also an archive), then you should | |
2300 | stat on the archive name, not member name. */ | |
9cce227f TG |
2301 | if (objfile->obfd->my_archive) |
2302 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2303 | else | |
9cce227f TG |
2304 | res = stat (objfile->name, &new_statbuf); |
2305 | if (res != 0) | |
2306 | { | |
2307 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ | |
2308 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), | |
2309 | objfile->name); | |
2310 | continue; | |
2311 | } | |
2312 | new_modtime = new_statbuf.st_mtime; | |
2313 | if (new_modtime != objfile->mtime) | |
2314 | { | |
2315 | struct cleanup *old_cleanups; | |
2316 | struct section_offsets *offsets; | |
2317 | int num_offsets; | |
2318 | char *obfd_filename; | |
2319 | ||
2320 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2321 | objfile->name); | |
2322 | ||
2323 | /* There are various functions like symbol_file_add, | |
2324 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2325 | appear to do what we want. But they have various other | |
2326 | effects which we *don't* want. So we just do stuff | |
2327 | ourselves. We don't worry about mapped files (for one thing, | |
2328 | any mapped file will be out of date). */ | |
2329 | ||
2330 | /* If we get an error, blow away this objfile (not sure if | |
2331 | that is the correct response for things like shared | |
2332 | libraries). */ | |
2333 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2334 | /* We need to do this whenever any symbols go away. */ | |
2335 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2336 | ||
2337 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), | |
2338 | bfd_get_filename (exec_bfd)) == 0) | |
2339 | { | |
2340 | /* Reload EXEC_BFD without asking anything. */ | |
2341 | ||
2342 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2343 | } | |
2344 | ||
2345 | /* Clean up any state BFD has sitting around. We don't need | |
2346 | to close the descriptor but BFD lacks a way of closing the | |
2347 | BFD without closing the descriptor. */ | |
2348 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2349 | if (!bfd_close (objfile->obfd)) | |
2350 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2351 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2352 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2353 | if (objfile->obfd == NULL) |
2354 | error (_("Can't open %s to read symbols."), objfile->name); | |
2355 | else | |
2356 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2357 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2358 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2359 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2360 | bfd_errmsg (bfd_get_error ())); | |
2361 | ||
2362 | /* Save the offsets, we will nuke them with the rest of the | |
2363 | objfile_obstack. */ | |
2364 | num_offsets = objfile->num_sections; | |
2365 | offsets = ((struct section_offsets *) | |
2366 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2367 | memcpy (offsets, objfile->section_offsets, | |
2368 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2369 | ||
2370 | /* Remove any references to this objfile in the global | |
2371 | value lists. */ | |
2372 | preserve_values (objfile); | |
2373 | ||
2374 | /* Nuke all the state that we will re-read. Much of the following | |
2375 | code which sets things to NULL really is necessary to tell | |
2376 | other parts of GDB that there is nothing currently there. | |
2377 | ||
2378 | Try to keep the freeing order compatible with free_objfile. */ | |
2379 | ||
2380 | if (objfile->sf != NULL) | |
2381 | { | |
2382 | (*objfile->sf->sym_finish) (objfile); | |
2383 | } | |
2384 | ||
2385 | clear_objfile_data (objfile); | |
2386 | ||
15d123c9 | 2387 | /* Free the separate debug objfiles. It will be |
9cce227f | 2388 | automatically recreated by sym_read. */ |
15d123c9 | 2389 | free_objfile_separate_debug (objfile); |
9cce227f TG |
2390 | |
2391 | /* FIXME: Do we have to free a whole linked list, or is this | |
2392 | enough? */ | |
2393 | if (objfile->global_psymbols.list) | |
2394 | xfree (objfile->global_psymbols.list); | |
2395 | memset (&objfile->global_psymbols, 0, | |
2396 | sizeof (objfile->global_psymbols)); | |
2397 | if (objfile->static_psymbols.list) | |
2398 | xfree (objfile->static_psymbols.list); | |
2399 | memset (&objfile->static_psymbols, 0, | |
2400 | sizeof (objfile->static_psymbols)); | |
2401 | ||
2402 | /* Free the obstacks for non-reusable objfiles */ | |
2403 | bcache_xfree (objfile->psymbol_cache); | |
2404 | objfile->psymbol_cache = bcache_xmalloc (); | |
2405 | bcache_xfree (objfile->macro_cache); | |
2406 | objfile->macro_cache = bcache_xmalloc (); | |
2407 | bcache_xfree (objfile->filename_cache); | |
2408 | objfile->filename_cache = bcache_xmalloc (); | |
2409 | if (objfile->demangled_names_hash != NULL) | |
2410 | { | |
2411 | htab_delete (objfile->demangled_names_hash); | |
2412 | objfile->demangled_names_hash = NULL; | |
2413 | } | |
2414 | obstack_free (&objfile->objfile_obstack, 0); | |
2415 | objfile->sections = NULL; | |
2416 | objfile->symtabs = NULL; | |
2417 | objfile->psymtabs = NULL; | |
2418 | objfile->psymtabs_addrmap = NULL; | |
2419 | objfile->free_psymtabs = NULL; | |
2420 | objfile->cp_namespace_symtab = NULL; | |
2421 | objfile->msymbols = NULL; | |
2422 | objfile->deprecated_sym_private = NULL; | |
2423 | objfile->minimal_symbol_count = 0; | |
2424 | memset (&objfile->msymbol_hash, 0, | |
2425 | sizeof (objfile->msymbol_hash)); | |
2426 | memset (&objfile->msymbol_demangled_hash, 0, | |
2427 | sizeof (objfile->msymbol_demangled_hash)); | |
2428 | ||
2429 | objfile->psymbol_cache = bcache_xmalloc (); | |
2430 | objfile->macro_cache = bcache_xmalloc (); | |
2431 | objfile->filename_cache = bcache_xmalloc (); | |
2432 | /* obstack_init also initializes the obstack so it is | |
2433 | empty. We could use obstack_specify_allocation but | |
2434 | gdb_obstack.h specifies the alloc/dealloc | |
2435 | functions. */ | |
2436 | obstack_init (&objfile->objfile_obstack); | |
2437 | if (build_objfile_section_table (objfile)) | |
2438 | { | |
2439 | error (_("Can't find the file sections in `%s': %s"), | |
2440 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2441 | } | |
2442 | terminate_minimal_symbol_table (objfile); | |
2443 | ||
2444 | /* We use the same section offsets as from last time. I'm not | |
2445 | sure whether that is always correct for shared libraries. */ | |
2446 | objfile->section_offsets = (struct section_offsets *) | |
2447 | obstack_alloc (&objfile->objfile_obstack, | |
2448 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2449 | memcpy (objfile->section_offsets, offsets, | |
2450 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2451 | objfile->num_sections = num_offsets; | |
2452 | ||
2453 | /* What the hell is sym_new_init for, anyway? The concept of | |
2454 | distinguishing between the main file and additional files | |
2455 | in this way seems rather dubious. */ | |
2456 | if (objfile == symfile_objfile) | |
c906108c | 2457 | { |
9cce227f | 2458 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2459 | } |
9cce227f TG |
2460 | |
2461 | (*objfile->sf->sym_init) (objfile); | |
2462 | clear_complaints (&symfile_complaints, 1, 1); | |
2463 | /* Do not set flags as this is safe and we don't want to be | |
2464 | verbose. */ | |
2465 | (*objfile->sf->sym_read) (objfile, 0); | |
2466 | if (!objfile_has_symbols (objfile)) | |
c906108c | 2467 | { |
9cce227f TG |
2468 | wrap_here (""); |
2469 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2470 | wrap_here (""); | |
c5aa993b | 2471 | } |
9cce227f TG |
2472 | |
2473 | /* We're done reading the symbol file; finish off complaints. */ | |
2474 | clear_complaints (&symfile_complaints, 0, 1); | |
2475 | ||
2476 | /* Getting new symbols may change our opinion about what is | |
2477 | frameless. */ | |
2478 | ||
2479 | reinit_frame_cache (); | |
2480 | ||
2481 | /* Discard cleanups as symbol reading was successful. */ | |
2482 | discard_cleanups (old_cleanups); | |
2483 | ||
2484 | /* If the mtime has changed between the time we set new_modtime | |
2485 | and now, we *want* this to be out of date, so don't call stat | |
2486 | again now. */ | |
2487 | objfile->mtime = new_modtime; | |
2488 | reread_one = 1; | |
2489 | init_entry_point_info (objfile); | |
c906108c SS |
2490 | } |
2491 | } | |
c906108c SS |
2492 | |
2493 | if (reread_one) | |
ea53e89f | 2494 | { |
ff3536bc UW |
2495 | /* Notify objfiles that we've modified objfile sections. */ |
2496 | objfiles_changed (); | |
2497 | ||
ea53e89f JB |
2498 | clear_symtab_users (); |
2499 | /* At least one objfile has changed, so we can consider that | |
2500 | the executable we're debugging has changed too. */ | |
781b42b0 | 2501 | observer_notify_executable_changed (); |
ea53e89f | 2502 | } |
c906108c | 2503 | } |
c906108c SS |
2504 | \f |
2505 | ||
c5aa993b JM |
2506 | |
2507 | typedef struct | |
2508 | { | |
2509 | char *ext; | |
c906108c | 2510 | enum language lang; |
c5aa993b JM |
2511 | } |
2512 | filename_language; | |
c906108c | 2513 | |
c5aa993b | 2514 | static filename_language *filename_language_table; |
c906108c SS |
2515 | static int fl_table_size, fl_table_next; |
2516 | ||
2517 | static void | |
fba45db2 | 2518 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2519 | { |
2520 | if (fl_table_next >= fl_table_size) | |
2521 | { | |
2522 | fl_table_size += 10; | |
5417f6dc | 2523 | filename_language_table = |
25bf3106 PM |
2524 | xrealloc (filename_language_table, |
2525 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2526 | } |
2527 | ||
4fcf66da | 2528 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2529 | filename_language_table[fl_table_next].lang = lang; |
2530 | fl_table_next++; | |
2531 | } | |
2532 | ||
2533 | static char *ext_args; | |
920d2a44 AC |
2534 | static void |
2535 | show_ext_args (struct ui_file *file, int from_tty, | |
2536 | struct cmd_list_element *c, const char *value) | |
2537 | { | |
2538 | fprintf_filtered (file, _("\ | |
2539 | Mapping between filename extension and source language is \"%s\".\n"), | |
2540 | value); | |
2541 | } | |
c906108c SS |
2542 | |
2543 | static void | |
26c41df3 | 2544 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2545 | { |
2546 | int i; | |
2547 | char *cp = ext_args; | |
2548 | enum language lang; | |
2549 | ||
2550 | /* First arg is filename extension, starting with '.' */ | |
2551 | if (*cp != '.') | |
8a3fe4f8 | 2552 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2553 | |
2554 | /* Find end of first arg. */ | |
c5aa993b | 2555 | while (*cp && !isspace (*cp)) |
c906108c SS |
2556 | cp++; |
2557 | ||
2558 | if (*cp == '\0') | |
8a3fe4f8 | 2559 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2560 | ext_args); |
2561 | ||
2562 | /* Null-terminate first arg */ | |
c5aa993b | 2563 | *cp++ = '\0'; |
c906108c SS |
2564 | |
2565 | /* Find beginning of second arg, which should be a source language. */ | |
2566 | while (*cp && isspace (*cp)) | |
2567 | cp++; | |
2568 | ||
2569 | if (*cp == '\0') | |
8a3fe4f8 | 2570 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2571 | ext_args); |
2572 | ||
2573 | /* Lookup the language from among those we know. */ | |
2574 | lang = language_enum (cp); | |
2575 | ||
2576 | /* Now lookup the filename extension: do we already know it? */ | |
2577 | for (i = 0; i < fl_table_next; i++) | |
2578 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2579 | break; | |
2580 | ||
2581 | if (i >= fl_table_next) | |
2582 | { | |
2583 | /* new file extension */ | |
2584 | add_filename_language (ext_args, lang); | |
2585 | } | |
2586 | else | |
2587 | { | |
2588 | /* redefining a previously known filename extension */ | |
2589 | ||
2590 | /* if (from_tty) */ | |
2591 | /* query ("Really make files of type %s '%s'?", */ | |
2592 | /* ext_args, language_str (lang)); */ | |
2593 | ||
b8c9b27d | 2594 | xfree (filename_language_table[i].ext); |
4fcf66da | 2595 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2596 | filename_language_table[i].lang = lang; |
2597 | } | |
2598 | } | |
2599 | ||
2600 | static void | |
fba45db2 | 2601 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2602 | { |
2603 | int i; | |
2604 | ||
a3f17187 | 2605 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2606 | printf_filtered ("\n\n"); |
2607 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2608 | printf_filtered ("\t%s\t- %s\n", |
2609 | filename_language_table[i].ext, | |
c906108c SS |
2610 | language_str (filename_language_table[i].lang)); |
2611 | } | |
2612 | ||
2613 | static void | |
fba45db2 | 2614 | init_filename_language_table (void) |
c906108c SS |
2615 | { |
2616 | if (fl_table_size == 0) /* protect against repetition */ | |
2617 | { | |
2618 | fl_table_size = 20; | |
2619 | fl_table_next = 0; | |
c5aa993b | 2620 | filename_language_table = |
c906108c | 2621 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2622 | add_filename_language (".c", language_c); |
6aecb9c2 | 2623 | add_filename_language (".d", language_d); |
c5aa993b JM |
2624 | add_filename_language (".C", language_cplus); |
2625 | add_filename_language (".cc", language_cplus); | |
2626 | add_filename_language (".cp", language_cplus); | |
2627 | add_filename_language (".cpp", language_cplus); | |
2628 | add_filename_language (".cxx", language_cplus); | |
2629 | add_filename_language (".c++", language_cplus); | |
2630 | add_filename_language (".java", language_java); | |
c906108c | 2631 | add_filename_language (".class", language_java); |
da2cf7e0 | 2632 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2633 | add_filename_language (".f", language_fortran); |
2634 | add_filename_language (".F", language_fortran); | |
2635 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2636 | add_filename_language (".sx", language_asm); |
c5aa993b | 2637 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2638 | add_filename_language (".pas", language_pascal); |
2639 | add_filename_language (".p", language_pascal); | |
2640 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2641 | add_filename_language (".adb", language_ada); |
2642 | add_filename_language (".ads", language_ada); | |
2643 | add_filename_language (".a", language_ada); | |
2644 | add_filename_language (".ada", language_ada); | |
dde59185 | 2645 | add_filename_language (".dg", language_ada); |
c906108c SS |
2646 | } |
2647 | } | |
2648 | ||
2649 | enum language | |
fba45db2 | 2650 | deduce_language_from_filename (char *filename) |
c906108c SS |
2651 | { |
2652 | int i; | |
2653 | char *cp; | |
2654 | ||
2655 | if (filename != NULL) | |
2656 | if ((cp = strrchr (filename, '.')) != NULL) | |
2657 | for (i = 0; i < fl_table_next; i++) | |
2658 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2659 | return filename_language_table[i].lang; | |
2660 | ||
2661 | return language_unknown; | |
2662 | } | |
2663 | \f | |
2664 | /* allocate_symtab: | |
2665 | ||
2666 | Allocate and partly initialize a new symbol table. Return a pointer | |
2667 | to it. error() if no space. | |
2668 | ||
2669 | Caller must set these fields: | |
c5aa993b JM |
2670 | LINETABLE(symtab) |
2671 | symtab->blockvector | |
2672 | symtab->dirname | |
2673 | symtab->free_code | |
2674 | symtab->free_ptr | |
c906108c SS |
2675 | */ |
2676 | ||
2677 | struct symtab * | |
fba45db2 | 2678 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2679 | { |
52f0bd74 | 2680 | struct symtab *symtab; |
c906108c SS |
2681 | |
2682 | symtab = (struct symtab *) | |
4a146b47 | 2683 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2684 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2685 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2686 | objfile->filename_cache); | |
c5aa993b JM |
2687 | symtab->fullname = NULL; |
2688 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2689 | symtab->debugformat = "unknown"; |
c906108c SS |
2690 | |
2691 | /* Hook it to the objfile it comes from */ | |
2692 | ||
c5aa993b JM |
2693 | symtab->objfile = objfile; |
2694 | symtab->next = objfile->symtabs; | |
2695 | objfile->symtabs = symtab; | |
c906108c | 2696 | |
c906108c SS |
2697 | return (symtab); |
2698 | } | |
c906108c | 2699 | \f |
c5aa993b | 2700 | |
c906108c SS |
2701 | /* Reset all data structures in gdb which may contain references to symbol |
2702 | table data. */ | |
2703 | ||
2704 | void | |
fba45db2 | 2705 | clear_symtab_users (void) |
c906108c SS |
2706 | { |
2707 | /* Someday, we should do better than this, by only blowing away | |
2708 | the things that really need to be blown. */ | |
c0501be5 DJ |
2709 | |
2710 | /* Clear the "current" symtab first, because it is no longer valid. | |
2711 | breakpoint_re_set may try to access the current symtab. */ | |
2712 | clear_current_source_symtab_and_line (); | |
2713 | ||
c906108c | 2714 | clear_displays (); |
c906108c | 2715 | breakpoint_re_set (); |
6c95b8df | 2716 | set_default_breakpoint (0, NULL, 0, 0, 0); |
c906108c | 2717 | clear_pc_function_cache (); |
06d3b283 | 2718 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2719 | |
2720 | /* Clear globals which might have pointed into a removed objfile. | |
2721 | FIXME: It's not clear which of these are supposed to persist | |
2722 | between expressions and which ought to be reset each time. */ | |
2723 | expression_context_block = NULL; | |
2724 | innermost_block = NULL; | |
8756216b DP |
2725 | |
2726 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2727 | varobj_invalidate (); | |
2728 | ||
c906108c SS |
2729 | } |
2730 | ||
74b7792f AC |
2731 | static void |
2732 | clear_symtab_users_cleanup (void *ignore) | |
2733 | { | |
2734 | clear_symtab_users (); | |
2735 | } | |
c906108c | 2736 | \f |
c906108c SS |
2737 | /* OVERLAYS: |
2738 | The following code implements an abstraction for debugging overlay sections. | |
2739 | ||
2740 | The target model is as follows: | |
2741 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2742 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2743 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2744 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2745 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2746 | sections should be considered to be mapped from the VMA to the LMA. |
2747 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2748 | For instance, if a section has been mapped then its contents |
c5aa993b | 2749 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2750 | |
2751 | Two levels of debugger support for overlays are available. One is | |
2752 | "manual", in which the debugger relies on the user to tell it which | |
2753 | overlays are currently mapped. This level of support is | |
2754 | implemented entirely in the core debugger, and the information about | |
2755 | whether a section is mapped is kept in the objfile->obj_section table. | |
2756 | ||
2757 | The second level of support is "automatic", and is only available if | |
2758 | the target-specific code provides functionality to read the target's | |
2759 | overlay mapping table, and translate its contents for the debugger | |
2760 | (by updating the mapped state information in the obj_section tables). | |
2761 | ||
2762 | The interface is as follows: | |
c5aa993b JM |
2763 | User commands: |
2764 | overlay map <name> -- tell gdb to consider this section mapped | |
2765 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2766 | overlay list -- list the sections that GDB thinks are mapped | |
2767 | overlay read-target -- get the target's state of what's mapped | |
2768 | overlay off/manual/auto -- set overlay debugging state | |
2769 | Functional interface: | |
2770 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2771 | section, return that section. | |
5417f6dc | 2772 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2773 | the pc, either in its VMA or its LMA |
714835d5 | 2774 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2775 | section_is_overlay(sect): true if section's VMA != LMA |
2776 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2777 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2778 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2779 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2780 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2781 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2782 | either in VMA or LMA depending on whether | |
2783 | the symbol's section is currently mapped | |
c906108c SS |
2784 | */ |
2785 | ||
2786 | /* Overlay debugging state: */ | |
2787 | ||
d874f1e2 | 2788 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2789 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2790 | ||
c906108c | 2791 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2792 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2793 | SECTION is loaded at an address different from where it will "run". */ |
2794 | ||
2795 | int | |
714835d5 | 2796 | section_is_overlay (struct obj_section *section) |
c906108c | 2797 | { |
714835d5 UW |
2798 | if (overlay_debugging && section) |
2799 | { | |
2800 | bfd *abfd = section->objfile->obfd; | |
2801 | asection *bfd_section = section->the_bfd_section; | |
2802 | ||
2803 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
2804 | && bfd_section_lma (abfd, bfd_section) | |
2805 | != bfd_section_vma (abfd, bfd_section)) | |
2806 | return 1; | |
2807 | } | |
c906108c SS |
2808 | |
2809 | return 0; | |
2810 | } | |
2811 | ||
2812 | /* Function: overlay_invalidate_all (void) | |
2813 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2814 | ||
2815 | static void | |
fba45db2 | 2816 | overlay_invalidate_all (void) |
c906108c | 2817 | { |
c5aa993b | 2818 | struct objfile *objfile; |
c906108c SS |
2819 | struct obj_section *sect; |
2820 | ||
2821 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2822 | if (section_is_overlay (sect)) |
2823 | sect->ovly_mapped = -1; | |
c906108c SS |
2824 | } |
2825 | ||
714835d5 | 2826 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2827 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2828 | |
2829 | Access to the ovly_mapped flag is restricted to this function, so | |
2830 | that we can do automatic update. If the global flag | |
2831 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2832 | overlay_invalidate_all. If the mapped state of the particular | |
2833 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2834 | ||
714835d5 UW |
2835 | int |
2836 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2837 | { |
9216df95 UW |
2838 | struct gdbarch *gdbarch; |
2839 | ||
714835d5 | 2840 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2841 | return 0; |
2842 | ||
c5aa993b | 2843 | switch (overlay_debugging) |
c906108c SS |
2844 | { |
2845 | default: | |
d874f1e2 | 2846 | case ovly_off: |
c5aa993b | 2847 | return 0; /* overlay debugging off */ |
d874f1e2 | 2848 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2849 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 2850 | there's really nothing useful to do here (can't really go auto) */ |
9216df95 UW |
2851 | gdbarch = get_objfile_arch (osect->objfile); |
2852 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
2853 | { |
2854 | if (overlay_cache_invalid) | |
2855 | { | |
2856 | overlay_invalidate_all (); | |
2857 | overlay_cache_invalid = 0; | |
2858 | } | |
2859 | if (osect->ovly_mapped == -1) | |
9216df95 | 2860 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
2861 | } |
2862 | /* fall thru to manual case */ | |
d874f1e2 | 2863 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2864 | return osect->ovly_mapped == 1; |
2865 | } | |
2866 | } | |
2867 | ||
c906108c SS |
2868 | /* Function: pc_in_unmapped_range |
2869 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2870 | ||
2871 | CORE_ADDR | |
714835d5 | 2872 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2873 | { |
714835d5 UW |
2874 | if (section_is_overlay (section)) |
2875 | { | |
2876 | bfd *abfd = section->objfile->obfd; | |
2877 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 2878 | |
714835d5 UW |
2879 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
2880 | bfd_vma size = bfd_get_section_size (bfd_section); | |
2881 | CORE_ADDR offset = obj_section_offset (section); | |
2882 | ||
2883 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
2884 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
2885 | return 1; | |
2886 | } | |
c906108c | 2887 | |
c906108c SS |
2888 | return 0; |
2889 | } | |
2890 | ||
2891 | /* Function: pc_in_mapped_range | |
2892 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2893 | ||
2894 | CORE_ADDR | |
714835d5 | 2895 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2896 | { |
714835d5 UW |
2897 | if (section_is_overlay (section)) |
2898 | { | |
2899 | if (obj_section_addr (section) <= pc | |
2900 | && pc < obj_section_endaddr (section)) | |
2901 | return 1; | |
2902 | } | |
c906108c | 2903 | |
c906108c SS |
2904 | return 0; |
2905 | } | |
2906 | ||
9ec8e6a0 JB |
2907 | |
2908 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2909 | otherwise. */ | |
b9362cc7 | 2910 | static int |
714835d5 | 2911 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 2912 | { |
714835d5 UW |
2913 | CORE_ADDR a_start = obj_section_addr (a); |
2914 | CORE_ADDR a_end = obj_section_endaddr (a); | |
2915 | CORE_ADDR b_start = obj_section_addr (b); | |
2916 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
2917 | |
2918 | return (a_start < b_end && b_start < a_end); | |
2919 | } | |
2920 | ||
c906108c SS |
2921 | /* Function: overlay_unmapped_address (PC, SECTION) |
2922 | Returns the address corresponding to PC in the unmapped (load) range. | |
2923 | May be the same as PC. */ | |
2924 | ||
2925 | CORE_ADDR | |
714835d5 | 2926 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2927 | { |
714835d5 UW |
2928 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
2929 | { | |
2930 | bfd *abfd = section->objfile->obfd; | |
2931 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 2932 | |
714835d5 UW |
2933 | return pc + bfd_section_lma (abfd, bfd_section) |
2934 | - bfd_section_vma (abfd, bfd_section); | |
2935 | } | |
c906108c SS |
2936 | |
2937 | return pc; | |
2938 | } | |
2939 | ||
2940 | /* Function: overlay_mapped_address (PC, SECTION) | |
2941 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2942 | May be the same as PC. */ | |
2943 | ||
2944 | CORE_ADDR | |
714835d5 | 2945 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2946 | { |
714835d5 UW |
2947 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
2948 | { | |
2949 | bfd *abfd = section->objfile->obfd; | |
2950 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 2951 | |
714835d5 UW |
2952 | return pc + bfd_section_vma (abfd, bfd_section) |
2953 | - bfd_section_lma (abfd, bfd_section); | |
2954 | } | |
c906108c SS |
2955 | |
2956 | return pc; | |
2957 | } | |
2958 | ||
2959 | ||
5417f6dc | 2960 | /* Function: symbol_overlayed_address |
c906108c SS |
2961 | Return one of two addresses (relative to the VMA or to the LMA), |
2962 | depending on whether the section is mapped or not. */ | |
2963 | ||
c5aa993b | 2964 | CORE_ADDR |
714835d5 | 2965 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
2966 | { |
2967 | if (overlay_debugging) | |
2968 | { | |
2969 | /* If the symbol has no section, just return its regular address. */ | |
2970 | if (section == 0) | |
2971 | return address; | |
2972 | /* If the symbol's section is not an overlay, just return its address */ | |
2973 | if (!section_is_overlay (section)) | |
2974 | return address; | |
2975 | /* If the symbol's section is mapped, just return its address */ | |
2976 | if (section_is_mapped (section)) | |
2977 | return address; | |
2978 | /* | |
2979 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2980 | * then return its LOADED address rather than its vma address!! | |
2981 | */ | |
2982 | return overlay_unmapped_address (address, section); | |
2983 | } | |
2984 | return address; | |
2985 | } | |
2986 | ||
5417f6dc | 2987 | /* Function: find_pc_overlay (PC) |
c906108c SS |
2988 | Return the best-match overlay section for PC: |
2989 | If PC matches a mapped overlay section's VMA, return that section. | |
2990 | Else if PC matches an unmapped section's VMA, return that section. | |
2991 | Else if PC matches an unmapped section's LMA, return that section. */ | |
2992 | ||
714835d5 | 2993 | struct obj_section * |
fba45db2 | 2994 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 2995 | { |
c5aa993b | 2996 | struct objfile *objfile; |
c906108c SS |
2997 | struct obj_section *osect, *best_match = NULL; |
2998 | ||
2999 | if (overlay_debugging) | |
3000 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3001 | if (section_is_overlay (osect)) |
c5aa993b | 3002 | { |
714835d5 | 3003 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3004 | { |
714835d5 UW |
3005 | if (section_is_mapped (osect)) |
3006 | return osect; | |
c5aa993b JM |
3007 | else |
3008 | best_match = osect; | |
3009 | } | |
714835d5 | 3010 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3011 | best_match = osect; |
3012 | } | |
714835d5 | 3013 | return best_match; |
c906108c SS |
3014 | } |
3015 | ||
3016 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3017 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3018 | currently marked as MAPPED, return that section. Else return NULL. */ |
3019 | ||
714835d5 | 3020 | struct obj_section * |
fba45db2 | 3021 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3022 | { |
c5aa993b | 3023 | struct objfile *objfile; |
c906108c SS |
3024 | struct obj_section *osect; |
3025 | ||
3026 | if (overlay_debugging) | |
3027 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3028 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3029 | return osect; | |
c906108c SS |
3030 | |
3031 | return NULL; | |
3032 | } | |
3033 | ||
3034 | /* Function: list_overlays_command | |
3035 | Print a list of mapped sections and their PC ranges */ | |
3036 | ||
3037 | void | |
fba45db2 | 3038 | list_overlays_command (char *args, int from_tty) |
c906108c | 3039 | { |
c5aa993b JM |
3040 | int nmapped = 0; |
3041 | struct objfile *objfile; | |
c906108c SS |
3042 | struct obj_section *osect; |
3043 | ||
3044 | if (overlay_debugging) | |
3045 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3046 | if (section_is_mapped (osect)) |
c5aa993b | 3047 | { |
5af949e3 | 3048 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3049 | const char *name; |
3050 | bfd_vma lma, vma; | |
3051 | int size; | |
3052 | ||
3053 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3054 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3055 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3056 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3057 | ||
3058 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3059 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3060 | puts_filtered (" - "); |
5af949e3 | 3061 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3062 | printf_filtered (", mapped at "); |
5af949e3 | 3063 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3064 | puts_filtered (" - "); |
5af949e3 | 3065 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3066 | puts_filtered ("\n"); |
3067 | ||
3068 | nmapped++; | |
3069 | } | |
c906108c | 3070 | if (nmapped == 0) |
a3f17187 | 3071 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3072 | } |
3073 | ||
3074 | /* Function: map_overlay_command | |
3075 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3076 | ||
3077 | void | |
fba45db2 | 3078 | map_overlay_command (char *args, int from_tty) |
c906108c | 3079 | { |
c5aa993b JM |
3080 | struct objfile *objfile, *objfile2; |
3081 | struct obj_section *sec, *sec2; | |
c906108c SS |
3082 | |
3083 | if (!overlay_debugging) | |
8a3fe4f8 | 3084 | error (_("\ |
515ad16c | 3085 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3086 | the 'overlay manual' command.")); |
c906108c SS |
3087 | |
3088 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3089 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3090 | |
3091 | /* First, find a section matching the user supplied argument */ | |
3092 | ALL_OBJSECTIONS (objfile, sec) | |
3093 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3094 | { |
3095 | /* Now, check to see if the section is an overlay. */ | |
714835d5 | 3096 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3097 | continue; /* not an overlay section */ |
3098 | ||
3099 | /* Mark the overlay as "mapped" */ | |
3100 | sec->ovly_mapped = 1; | |
3101 | ||
3102 | /* Next, make a pass and unmap any sections that are | |
3103 | overlapped by this new section: */ | |
3104 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3105 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3106 | { |
3107 | if (info_verbose) | |
a3f17187 | 3108 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3109 | bfd_section_name (objfile->obfd, |
3110 | sec2->the_bfd_section)); | |
3111 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3112 | } | |
3113 | return; | |
3114 | } | |
8a3fe4f8 | 3115 | error (_("No overlay section called %s"), args); |
c906108c SS |
3116 | } |
3117 | ||
3118 | /* Function: unmap_overlay_command | |
5417f6dc | 3119 | Mark the overlay section as unmapped |
c906108c SS |
3120 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3121 | ||
3122 | void | |
fba45db2 | 3123 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3124 | { |
c5aa993b | 3125 | struct objfile *objfile; |
c906108c SS |
3126 | struct obj_section *sec; |
3127 | ||
3128 | if (!overlay_debugging) | |
8a3fe4f8 | 3129 | error (_("\ |
515ad16c | 3130 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3131 | the 'overlay manual' command.")); |
c906108c SS |
3132 | |
3133 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3134 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3135 | |
3136 | /* First, find a section matching the user supplied argument */ | |
3137 | ALL_OBJSECTIONS (objfile, sec) | |
3138 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3139 | { |
3140 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3141 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3142 | sec->ovly_mapped = 0; |
3143 | return; | |
3144 | } | |
8a3fe4f8 | 3145 | error (_("No overlay section called %s"), args); |
c906108c SS |
3146 | } |
3147 | ||
3148 | /* Function: overlay_auto_command | |
3149 | A utility command to turn on overlay debugging. | |
3150 | Possibly this should be done via a set/show command. */ | |
3151 | ||
3152 | static void | |
fba45db2 | 3153 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3154 | { |
d874f1e2 | 3155 | overlay_debugging = ovly_auto; |
1900040c | 3156 | enable_overlay_breakpoints (); |
c906108c | 3157 | if (info_verbose) |
a3f17187 | 3158 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3159 | } |
3160 | ||
3161 | /* Function: overlay_manual_command | |
3162 | A utility command to turn on overlay debugging. | |
3163 | Possibly this should be done via a set/show command. */ | |
3164 | ||
3165 | static void | |
fba45db2 | 3166 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3167 | { |
d874f1e2 | 3168 | overlay_debugging = ovly_on; |
1900040c | 3169 | disable_overlay_breakpoints (); |
c906108c | 3170 | if (info_verbose) |
a3f17187 | 3171 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3172 | } |
3173 | ||
3174 | /* Function: overlay_off_command | |
3175 | A utility command to turn on overlay debugging. | |
3176 | Possibly this should be done via a set/show command. */ | |
3177 | ||
3178 | static void | |
fba45db2 | 3179 | overlay_off_command (char *args, int from_tty) |
c906108c | 3180 | { |
d874f1e2 | 3181 | overlay_debugging = ovly_off; |
1900040c | 3182 | disable_overlay_breakpoints (); |
c906108c | 3183 | if (info_verbose) |
a3f17187 | 3184 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3185 | } |
3186 | ||
3187 | static void | |
fba45db2 | 3188 | overlay_load_command (char *args, int from_tty) |
c906108c | 3189 | { |
e17c207e UW |
3190 | struct gdbarch *gdbarch = get_current_arch (); |
3191 | ||
3192 | if (gdbarch_overlay_update_p (gdbarch)) | |
3193 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3194 | else |
8a3fe4f8 | 3195 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3196 | } |
3197 | ||
3198 | /* Function: overlay_command | |
3199 | A place-holder for a mis-typed command */ | |
3200 | ||
3201 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3202 | struct cmd_list_element *overlaylist; | |
3203 | ||
3204 | static void | |
fba45db2 | 3205 | overlay_command (char *args, int from_tty) |
c906108c | 3206 | { |
c5aa993b | 3207 | printf_unfiltered |
c906108c SS |
3208 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3209 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3210 | } | |
3211 | ||
3212 | ||
3213 | /* Target Overlays for the "Simplest" overlay manager: | |
3214 | ||
5417f6dc RM |
3215 | This is GDB's default target overlay layer. It works with the |
3216 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3217 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3218 | so targets that use a different runtime overlay manager can |
c906108c SS |
3219 | substitute their own overlay_update function and take over the |
3220 | function pointer. | |
3221 | ||
3222 | The overlay_update function pokes around in the target's data structures | |
3223 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3224 | this information. | |
3225 | ||
3226 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3227 | unsigned _novlys; /# number of overlay sections #/ |
3228 | unsigned _ovly_table[_novlys][4] = { | |
3229 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3230 | {..., ..., ..., ...}, | |
3231 | } | |
3232 | unsigned _novly_regions; /# number of overlay regions #/ | |
3233 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3234 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3235 | {..., ..., ...}, | |
3236 | } | |
c906108c SS |
3237 | These functions will attempt to update GDB's mappedness state in the |
3238 | symbol section table, based on the target's mappedness state. | |
3239 | ||
3240 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3241 | attempt to detect when the cached copy is invalidated. The main | |
3242 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3243 | the cached table and re-reads only the entry for that section from | |
3244 | the target (whenever possible). | |
3245 | */ | |
3246 | ||
3247 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3248 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3249 | #if 0 |
c5aa993b | 3250 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3251 | #endif |
c5aa993b | 3252 | static unsigned cache_novlys = 0; |
c906108c | 3253 | #if 0 |
c5aa993b | 3254 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3255 | #endif |
3256 | static CORE_ADDR cache_ovly_table_base = 0; | |
3257 | #if 0 | |
3258 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3259 | #endif | |
c5aa993b JM |
3260 | enum ovly_index |
3261 | { | |
3262 | VMA, SIZE, LMA, MAPPED | |
3263 | }; | |
c906108c SS |
3264 | |
3265 | /* Throw away the cached copy of _ovly_table */ | |
3266 | static void | |
fba45db2 | 3267 | simple_free_overlay_table (void) |
c906108c SS |
3268 | { |
3269 | if (cache_ovly_table) | |
b8c9b27d | 3270 | xfree (cache_ovly_table); |
c5aa993b | 3271 | cache_novlys = 0; |
c906108c SS |
3272 | cache_ovly_table = NULL; |
3273 | cache_ovly_table_base = 0; | |
3274 | } | |
3275 | ||
3276 | #if 0 | |
3277 | /* Throw away the cached copy of _ovly_region_table */ | |
3278 | static void | |
fba45db2 | 3279 | simple_free_overlay_region_table (void) |
c906108c SS |
3280 | { |
3281 | if (cache_ovly_region_table) | |
b8c9b27d | 3282 | xfree (cache_ovly_region_table); |
c5aa993b | 3283 | cache_novly_regions = 0; |
c906108c SS |
3284 | cache_ovly_region_table = NULL; |
3285 | cache_ovly_region_table_base = 0; | |
3286 | } | |
3287 | #endif | |
3288 | ||
9216df95 | 3289 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c906108c SS |
3290 | Convert to host order. int LEN is number of ints */ |
3291 | static void | |
9216df95 | 3292 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3293 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3294 | { |
34c0bd93 | 3295 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3296 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3297 | int i; |
c906108c | 3298 | |
9216df95 | 3299 | read_memory (memaddr, buf, len * size); |
c906108c | 3300 | for (i = 0; i < len; i++) |
e17a4113 | 3301 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3302 | } |
3303 | ||
3304 | /* Find and grab a copy of the target _ovly_table | |
3305 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3306 | static int |
fba45db2 | 3307 | simple_read_overlay_table (void) |
c906108c | 3308 | { |
0d43edd1 | 3309 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3310 | struct gdbarch *gdbarch; |
3311 | int word_size; | |
e17a4113 | 3312 | enum bfd_endian byte_order; |
c906108c SS |
3313 | |
3314 | simple_free_overlay_table (); | |
9b27852e | 3315 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3316 | if (! novlys_msym) |
c906108c | 3317 | { |
8a3fe4f8 | 3318 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3319 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3320 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3321 | return 0; |
c906108c | 3322 | } |
0d43edd1 | 3323 | |
9b27852e | 3324 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3325 | if (! ovly_table_msym) |
3326 | { | |
8a3fe4f8 | 3327 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3328 | "`_ovly_table' array\n" |
8a3fe4f8 | 3329 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3330 | return 0; |
3331 | } | |
3332 | ||
9216df95 UW |
3333 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3334 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3335 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3336 | |
e17a4113 UW |
3337 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3338 | 4, byte_order); | |
0d43edd1 JB |
3339 | cache_ovly_table |
3340 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3341 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3342 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3343 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3344 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3345 | |
c5aa993b | 3346 | return 1; /* SUCCESS */ |
c906108c SS |
3347 | } |
3348 | ||
3349 | #if 0 | |
3350 | /* Find and grab a copy of the target _ovly_region_table | |
3351 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3352 | static int |
fba45db2 | 3353 | simple_read_overlay_region_table (void) |
c906108c SS |
3354 | { |
3355 | struct minimal_symbol *msym; | |
e17a4113 UW |
3356 | struct gdbarch *gdbarch; |
3357 | int word_size; | |
3358 | enum bfd_endian byte_order; | |
c906108c SS |
3359 | |
3360 | simple_free_overlay_region_table (); | |
9b27852e | 3361 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
e17a4113 | 3362 | if (msym == NULL) |
c5aa993b | 3363 | return 0; /* failure */ |
e17a4113 UW |
3364 | |
3365 | gdbarch = get_objfile_arch (msymbol_objfile (msym)); | |
3366 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
3367 | byte_order = gdbarch_byte_order (gdbarch); | |
3368 | ||
3369 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), | |
3370 | 4, byte_order); | |
3371 | ||
c906108c SS |
3372 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3373 | if (cache_ovly_region_table != NULL) | |
3374 | { | |
9b27852e | 3375 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3376 | if (msym != NULL) |
3377 | { | |
3378 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3379 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3380 | (unsigned int *) cache_ovly_region_table, |
e17a4113 UW |
3381 | cache_novly_regions * 3, |
3382 | word_size, byte_order); | |
c906108c | 3383 | } |
c5aa993b JM |
3384 | else |
3385 | return 0; /* failure */ | |
c906108c | 3386 | } |
c5aa993b JM |
3387 | else |
3388 | return 0; /* failure */ | |
3389 | return 1; /* SUCCESS */ | |
c906108c SS |
3390 | } |
3391 | #endif | |
3392 | ||
5417f6dc | 3393 | /* Function: simple_overlay_update_1 |
c906108c SS |
3394 | A helper function for simple_overlay_update. Assuming a cached copy |
3395 | of _ovly_table exists, look through it to find an entry whose vma, | |
3396 | lma and size match those of OSECT. Re-read the entry and make sure | |
3397 | it still matches OSECT (else the table may no longer be valid). | |
3398 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3399 | success, 0 for failure. */ | |
3400 | ||
3401 | static int | |
fba45db2 | 3402 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3403 | { |
3404 | int i, size; | |
fbd35540 MS |
3405 | bfd *obfd = osect->objfile->obfd; |
3406 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3407 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3408 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3409 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3410 | |
2c500098 | 3411 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3412 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3413 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3414 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3415 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3416 | { |
9216df95 UW |
3417 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3418 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3419 | 4, word_size, byte_order); |
fbd35540 MS |
3420 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3421 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3422 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3423 | { |
3424 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3425 | return 1; | |
3426 | } | |
fbd35540 | 3427 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3428 | return 0; |
3429 | } | |
3430 | return 0; | |
3431 | } | |
3432 | ||
3433 | /* Function: simple_overlay_update | |
5417f6dc RM |
3434 | If OSECT is NULL, then update all sections' mapped state |
3435 | (after re-reading the entire target _ovly_table). | |
3436 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3437 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3438 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3439 | re-read the entire cache, and go ahead and update all sections. */ |
3440 | ||
1c772458 | 3441 | void |
fba45db2 | 3442 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3443 | { |
c5aa993b | 3444 | struct objfile *objfile; |
c906108c SS |
3445 | |
3446 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3447 | if (osect) | |
3448 | /* Have we got a cached copy of the target's overlay table? */ | |
3449 | if (cache_ovly_table != NULL) | |
3450 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3451 | if (cache_ovly_table_base == |
9b27852e | 3452 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3453 | /* Then go ahead and try to look up this single section in the cache */ |
3454 | if (simple_overlay_update_1 (osect)) | |
3455 | /* Found it! We're done. */ | |
3456 | return; | |
3457 | ||
3458 | /* Cached table no good: need to read the entire table anew. | |
3459 | Or else we want all the sections, in which case it's actually | |
3460 | more efficient to read the whole table in one block anyway. */ | |
3461 | ||
0d43edd1 JB |
3462 | if (! simple_read_overlay_table ()) |
3463 | return; | |
3464 | ||
c906108c SS |
3465 | /* Now may as well update all sections, even if only one was requested. */ |
3466 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3467 | if (section_is_overlay (osect)) |
c5aa993b JM |
3468 | { |
3469 | int i, size; | |
fbd35540 MS |
3470 | bfd *obfd = osect->objfile->obfd; |
3471 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3472 | |
2c500098 | 3473 | size = bfd_get_section_size (bsect); |
c5aa993b | 3474 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3475 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3476 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3477 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3478 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3479 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3480 | break; /* finished with inner for loop: break out */ | |
3481 | } | |
3482 | } | |
c906108c SS |
3483 | } |
3484 | ||
086df311 DJ |
3485 | /* Set the output sections and output offsets for section SECTP in |
3486 | ABFD. The relocation code in BFD will read these offsets, so we | |
3487 | need to be sure they're initialized. We map each section to itself, | |
3488 | with no offset; this means that SECTP->vma will be honored. */ | |
3489 | ||
3490 | static void | |
3491 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3492 | { | |
3493 | sectp->output_section = sectp; | |
3494 | sectp->output_offset = 0; | |
3495 | } | |
3496 | ||
ac8035ab TG |
3497 | /* Default implementation for sym_relocate. */ |
3498 | ||
3499 | ||
3500 | bfd_byte * | |
3501 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3502 | bfd_byte *buf) | |
3503 | { | |
3504 | bfd *abfd = objfile->obfd; | |
3505 | ||
3506 | /* We're only interested in sections with relocation | |
3507 | information. */ | |
3508 | if ((sectp->flags & SEC_RELOC) == 0) | |
3509 | return NULL; | |
3510 | ||
3511 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3512 | all sections begin at 0. */ | |
3513 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3514 | ||
3515 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3516 | } | |
3517 | ||
086df311 DJ |
3518 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3519 | contents are stored in BUF if it is non-NULL, or returned in a | |
3520 | malloc'd buffer otherwise. | |
3521 | ||
3522 | For some platforms and debug info formats, shared libraries contain | |
3523 | relocations against the debug sections (particularly for DWARF-2; | |
3524 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3525 | the version of the linker in use). Also, ELF object files naturally | |
3526 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3527 | the relocations in order to get the locations of symbols correct. |
3528 | Another example that may require relocation processing, is the | |
3529 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3530 | debug section. */ | |
086df311 DJ |
3531 | |
3532 | bfd_byte * | |
ac8035ab TG |
3533 | symfile_relocate_debug_section (struct objfile *objfile, |
3534 | asection *sectp, bfd_byte *buf) | |
086df311 | 3535 | { |
ac8035ab | 3536 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3537 | |
ac8035ab | 3538 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3539 | } |
c906108c | 3540 | |
31d99776 DJ |
3541 | struct symfile_segment_data * |
3542 | get_symfile_segment_data (bfd *abfd) | |
3543 | { | |
3544 | struct sym_fns *sf = find_sym_fns (abfd); | |
3545 | ||
3546 | if (sf == NULL) | |
3547 | return NULL; | |
3548 | ||
3549 | return sf->sym_segments (abfd); | |
3550 | } | |
3551 | ||
3552 | void | |
3553 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3554 | { | |
3555 | xfree (data->segment_bases); | |
3556 | xfree (data->segment_sizes); | |
3557 | xfree (data->segment_info); | |
3558 | xfree (data); | |
3559 | } | |
3560 | ||
28c32713 JB |
3561 | |
3562 | /* Given: | |
3563 | - DATA, containing segment addresses from the object file ABFD, and | |
3564 | the mapping from ABFD's sections onto the segments that own them, | |
3565 | and | |
3566 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3567 | segment addresses reported by the target, | |
3568 | store the appropriate offsets for each section in OFFSETS. | |
3569 | ||
3570 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3571 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3572 | ||
8d385431 DJ |
3573 | If there are more entries, then ignore the extra. The target may |
3574 | not be able to distinguish between an empty data segment and a | |
3575 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3576 | int |
3577 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3578 | struct section_offsets *offsets, | |
3579 | int num_segment_bases, | |
3580 | const CORE_ADDR *segment_bases) | |
3581 | { | |
3582 | int i; | |
3583 | asection *sect; | |
3584 | ||
28c32713 JB |
3585 | /* It doesn't make sense to call this function unless you have some |
3586 | segment base addresses. */ | |
202b96c1 | 3587 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3588 | |
31d99776 DJ |
3589 | /* If we do not have segment mappings for the object file, we |
3590 | can not relocate it by segments. */ | |
3591 | gdb_assert (data != NULL); | |
3592 | gdb_assert (data->num_segments > 0); | |
3593 | ||
31d99776 DJ |
3594 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3595 | { | |
31d99776 DJ |
3596 | int which = data->segment_info[i]; |
3597 | ||
28c32713 JB |
3598 | gdb_assert (0 <= which && which <= data->num_segments); |
3599 | ||
3600 | /* Don't bother computing offsets for sections that aren't | |
3601 | loaded as part of any segment. */ | |
3602 | if (! which) | |
3603 | continue; | |
3604 | ||
3605 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3606 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3607 | if (which > num_segment_bases) |
28c32713 | 3608 | which = num_segment_bases; |
31d99776 | 3609 | |
28c32713 JB |
3610 | offsets->offsets[i] = (segment_bases[which - 1] |
3611 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3612 | } |
3613 | ||
3614 | return 1; | |
3615 | } | |
3616 | ||
3617 | static void | |
3618 | symfile_find_segment_sections (struct objfile *objfile) | |
3619 | { | |
3620 | bfd *abfd = objfile->obfd; | |
3621 | int i; | |
3622 | asection *sect; | |
3623 | struct symfile_segment_data *data; | |
3624 | ||
3625 | data = get_symfile_segment_data (objfile->obfd); | |
3626 | if (data == NULL) | |
3627 | return; | |
3628 | ||
3629 | if (data->num_segments != 1 && data->num_segments != 2) | |
3630 | { | |
3631 | free_symfile_segment_data (data); | |
3632 | return; | |
3633 | } | |
3634 | ||
3635 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3636 | { | |
31d99776 DJ |
3637 | int which = data->segment_info[i]; |
3638 | ||
3639 | if (which == 1) | |
3640 | { | |
3641 | if (objfile->sect_index_text == -1) | |
3642 | objfile->sect_index_text = sect->index; | |
3643 | ||
3644 | if (objfile->sect_index_rodata == -1) | |
3645 | objfile->sect_index_rodata = sect->index; | |
3646 | } | |
3647 | else if (which == 2) | |
3648 | { | |
3649 | if (objfile->sect_index_data == -1) | |
3650 | objfile->sect_index_data = sect->index; | |
3651 | ||
3652 | if (objfile->sect_index_bss == -1) | |
3653 | objfile->sect_index_bss = sect->index; | |
3654 | } | |
3655 | } | |
3656 | ||
3657 | free_symfile_segment_data (data); | |
3658 | } | |
3659 | ||
c906108c | 3660 | void |
fba45db2 | 3661 | _initialize_symfile (void) |
c906108c SS |
3662 | { |
3663 | struct cmd_list_element *c; | |
c5aa993b | 3664 | |
1a966eab AC |
3665 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3666 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3667 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3668 | to execute."), &cmdlist); |
5ba2abeb | 3669 | set_cmd_completer (c, filename_completer); |
c906108c | 3670 | |
1a966eab | 3671 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3672 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 3673 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 3674 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3675 | The optional arguments are section-name section-address pairs and\n\ |
3676 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3677 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3678 | &cmdlist); |
5ba2abeb | 3679 | set_cmd_completer (c, filename_completer); |
c906108c | 3680 | |
1a966eab AC |
3681 | c = add_cmd ("load", class_files, load_command, _("\ |
3682 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3683 | for access from GDB.\n\ |
3684 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3685 | set_cmd_completer (c, filename_completer); |
c906108c | 3686 | |
5bf193a2 AC |
3687 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3688 | &symbol_reloading, _("\ | |
3689 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3690 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3691 | NULL, | |
920d2a44 | 3692 | show_symbol_reloading, |
5bf193a2 | 3693 | &setlist, &showlist); |
c906108c | 3694 | |
c5aa993b | 3695 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3696 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3697 | "overlay ", 0, &cmdlist); |
3698 | ||
3699 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3700 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3701 | ||
c5aa993b | 3702 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3703 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3704 | |
c5aa993b | 3705 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3706 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3707 | |
c5aa993b | 3708 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3709 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3710 | |
c5aa993b | 3711 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3712 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3713 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3714 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3715 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3716 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3717 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3718 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3719 | |
3720 | /* Filename extension to source language lookup table: */ | |
3721 | init_filename_language_table (); | |
26c41df3 AC |
3722 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3723 | &ext_args, _("\ | |
3724 | Set mapping between filename extension and source language."), _("\ | |
3725 | Show mapping between filename extension and source language."), _("\ | |
3726 | Usage: set extension-language .foo bar"), | |
3727 | set_ext_lang_command, | |
920d2a44 | 3728 | show_ext_args, |
26c41df3 | 3729 | &setlist, &showlist); |
c906108c | 3730 | |
c5aa993b | 3731 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3732 | _("All filename extensions associated with a source language.")); |
917317f4 | 3733 | |
525226b5 AC |
3734 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3735 | &debug_file_directory, _("\ | |
24ddea62 JK |
3736 | Set the directories where separate debug symbols are searched for."), _("\ |
3737 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3738 | Separate debug symbols are first searched for in the same\n\ |
3739 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3740 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3741 | each global debug-file-directory component prepended."), |
525226b5 | 3742 | NULL, |
920d2a44 | 3743 | show_debug_file_directory, |
525226b5 | 3744 | &setlist, &showlist); |
c906108c | 3745 | } |