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, |
7b6bb8da | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
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" |
1bfeeb0f | 59 | #include "stack.h" |
c906108c | 60 | |
c906108c SS |
61 | #include <sys/types.h> |
62 | #include <fcntl.h> | |
63 | #include "gdb_string.h" | |
64 | #include "gdb_stat.h" | |
65 | #include <ctype.h> | |
66 | #include <time.h> | |
2b71414d | 67 | #include <sys/time.h> |
c906108c | 68 | |
ccefe4c4 | 69 | #include "psymtab.h" |
c906108c | 70 | |
3e43a32a MS |
71 | int (*deprecated_ui_load_progress_hook) (const char *section, |
72 | unsigned long num); | |
9a4105ab | 73 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
74 | unsigned long section_sent, |
75 | unsigned long section_size, | |
76 | unsigned long total_sent, | |
c2d11a7d | 77 | unsigned long total_size); |
769d7dc4 AC |
78 | void (*deprecated_pre_add_symbol_hook) (const char *); |
79 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 80 | |
74b7792f AC |
81 | static void clear_symtab_users_cleanup (void *ignore); |
82 | ||
c378eb4e MS |
83 | /* Global variables owned by this file. */ |
84 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 85 | |
c378eb4e | 86 | /* External variables and functions referenced. */ |
c906108c | 87 | |
a14ed312 | 88 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c | 89 | |
c378eb4e | 90 | /* Functions this file defines. */ |
c906108c | 91 | |
a14ed312 | 92 | static void load_command (char *, int); |
c906108c | 93 | |
d7db6da9 FN |
94 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
95 | ||
a14ed312 | 96 | static void add_symbol_file_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | bfd *symfile_bfd_open (char *); |
c906108c | 99 | |
0e931cf0 JB |
100 | int get_section_index (struct objfile *, char *); |
101 | ||
00b5771c | 102 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 103 | |
a14ed312 | 104 | static void decrement_reading_symtab (void *); |
c906108c | 105 | |
a14ed312 | 106 | static void overlay_invalidate_all (void); |
c906108c | 107 | |
a14ed312 | 108 | void list_overlays_command (char *, int); |
c906108c | 109 | |
a14ed312 | 110 | void map_overlay_command (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | void unmap_overlay_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | static void overlay_auto_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | static void overlay_manual_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void overlay_off_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void overlay_load_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void simple_free_overlay_table (void); |
c906108c | 125 | |
e17a4113 UW |
126 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
127 | enum bfd_endian); | |
c906108c | 128 | |
a14ed312 | 129 | static int simple_read_overlay_table (void); |
c906108c | 130 | |
a14ed312 | 131 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 132 | |
a14ed312 | 133 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 134 | |
a14ed312 | 135 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 136 | |
a14ed312 | 137 | static void init_filename_language_table (void); |
392a587b | 138 | |
31d99776 DJ |
139 | static void symfile_find_segment_sections (struct objfile *objfile); |
140 | ||
a14ed312 | 141 | void _initialize_symfile (void); |
c906108c SS |
142 | |
143 | /* List of all available sym_fns. On gdb startup, each object file reader | |
144 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 145 | prepared to read. */ |
c906108c | 146 | |
00b5771c TT |
147 | typedef const struct sym_fns *sym_fns_ptr; |
148 | DEF_VEC_P (sym_fns_ptr); | |
149 | ||
150 | static VEC (sym_fns_ptr) *symtab_fns = NULL; | |
c906108c SS |
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 | { | |
3e43a32a MS |
164 | fprintf_filtered (file, _("Dynamic symbol table reloading " |
165 | "multiple times in one run is %s.\n"), | |
920d2a44 AC |
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* |
0d14a781 | 177 | report all the functions that are actually present. */ |
c906108c SS |
178 | |
179 | int auto_solib_add = 1; | |
c906108c | 180 | \f |
c5aa993b | 181 | |
c906108c SS |
182 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
183 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
c378eb4e | 184 | Note that the string at PTR does not have to be null terminated, I.e. it |
0d14a781 | 185 | may be part of a larger string and we are only saving a substring. */ |
c906108c SS |
186 | |
187 | char * | |
63ca651f | 188 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 189 | { |
52f0bd74 | 190 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
191 | /* Open-coded memcpy--saves function call time. These strings are usually |
192 | short. FIXME: Is this really still true with a compiler that can | |
c378eb4e | 193 | inline memcpy? */ |
c906108c | 194 | { |
aa1ee363 AC |
195 | const char *p1 = ptr; |
196 | char *p2 = p; | |
63ca651f | 197 | const char *end = ptr + size; |
433759f7 | 198 | |
c906108c SS |
199 | while (p1 != end) |
200 | *p2++ = *p1++; | |
201 | } | |
202 | p[size] = 0; | |
203 | return p; | |
204 | } | |
205 | ||
3e43a32a MS |
206 | /* Concatenate NULL terminated variable argument list of `const char *' |
207 | strings; return the new string. Space is found in the OBSTACKP. | |
208 | Argument list must be terminated by a sentinel expression `(char *) | |
209 | NULL'. */ | |
c906108c SS |
210 | |
211 | char * | |
48cb83fd | 212 | obconcat (struct obstack *obstackp, ...) |
c906108c | 213 | { |
48cb83fd JK |
214 | va_list ap; |
215 | ||
216 | va_start (ap, obstackp); | |
217 | for (;;) | |
218 | { | |
219 | const char *s = va_arg (ap, const char *); | |
220 | ||
221 | if (s == NULL) | |
222 | break; | |
223 | ||
224 | obstack_grow_str (obstackp, s); | |
225 | } | |
226 | va_end (ap); | |
227 | obstack_1grow (obstackp, 0); | |
228 | ||
229 | return obstack_finish (obstackp); | |
c906108c SS |
230 | } |
231 | ||
0d14a781 | 232 | /* True if we are reading a symbol table. */ |
c906108c SS |
233 | |
234 | int currently_reading_symtab = 0; | |
235 | ||
236 | static void | |
fba45db2 | 237 | decrement_reading_symtab (void *dummy) |
c906108c SS |
238 | { |
239 | currently_reading_symtab--; | |
240 | } | |
241 | ||
ccefe4c4 TT |
242 | /* Increment currently_reading_symtab and return a cleanup that can be |
243 | used to decrement it. */ | |
244 | struct cleanup * | |
245 | increment_reading_symtab (void) | |
c906108c | 246 | { |
ccefe4c4 TT |
247 | ++currently_reading_symtab; |
248 | return make_cleanup (decrement_reading_symtab, NULL); | |
c906108c SS |
249 | } |
250 | ||
5417f6dc RM |
251 | /* Remember the lowest-addressed loadable section we've seen. |
252 | This function is called via bfd_map_over_sections. | |
c906108c SS |
253 | |
254 | In case of equal vmas, the section with the largest size becomes the | |
255 | lowest-addressed loadable section. | |
256 | ||
257 | If the vmas and sizes are equal, the last section is considered the | |
258 | lowest-addressed loadable section. */ | |
259 | ||
260 | void | |
4efb68b1 | 261 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 262 | { |
c5aa993b | 263 | asection **lowest = (asection **) obj; |
c906108c | 264 | |
eb73e134 | 265 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
266 | return; |
267 | if (!*lowest) | |
268 | *lowest = sect; /* First loadable section */ | |
269 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
270 | *lowest = sect; /* A lower loadable section */ | |
271 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
272 | && (bfd_section_size (abfd, (*lowest)) | |
273 | <= bfd_section_size (abfd, sect))) | |
274 | *lowest = sect; | |
275 | } | |
276 | ||
a39a16c4 MM |
277 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
278 | ||
279 | struct section_addr_info * | |
280 | alloc_section_addr_info (size_t num_sections) | |
281 | { | |
282 | struct section_addr_info *sap; | |
283 | size_t size; | |
284 | ||
285 | size = (sizeof (struct section_addr_info) | |
286 | + sizeof (struct other_sections) * (num_sections - 1)); | |
287 | sap = (struct section_addr_info *) xmalloc (size); | |
288 | memset (sap, 0, size); | |
289 | sap->num_sections = num_sections; | |
290 | ||
291 | return sap; | |
292 | } | |
62557bbc KB |
293 | |
294 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 295 | an existing section table. */ |
62557bbc KB |
296 | |
297 | extern struct section_addr_info * | |
0542c86d PA |
298 | build_section_addr_info_from_section_table (const struct target_section *start, |
299 | const struct target_section *end) | |
62557bbc KB |
300 | { |
301 | struct section_addr_info *sap; | |
0542c86d | 302 | const struct target_section *stp; |
62557bbc KB |
303 | int oidx; |
304 | ||
a39a16c4 | 305 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
306 | |
307 | for (stp = start, oidx = 0; stp != end; stp++) | |
308 | { | |
5417f6dc | 309 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 310 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 311 | && oidx < end - start) |
62557bbc KB |
312 | { |
313 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 314 | sap->other[oidx].name |
fbd35540 | 315 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
316 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
317 | oidx++; | |
318 | } | |
319 | } | |
320 | ||
321 | return sap; | |
322 | } | |
323 | ||
82ccf5a5 | 324 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 325 | |
82ccf5a5 JK |
326 | static struct section_addr_info * |
327 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
328 | { |
329 | struct section_addr_info *sap; | |
330 | int i; | |
331 | struct bfd_section *sec; | |
332 | ||
82ccf5a5 JK |
333 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
334 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
335 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 336 | { |
82ccf5a5 JK |
337 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
338 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
012836ea JK |
339 | sap->other[i].sectindex = sec->index; |
340 | i++; | |
341 | } | |
089b4803 TG |
342 | return sap; |
343 | } | |
344 | ||
82ccf5a5 JK |
345 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
346 | ||
347 | struct section_addr_info * | |
348 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
349 | { | |
350 | struct section_addr_info *sap; | |
351 | int i; | |
352 | ||
353 | /* Before reread_symbols gets rewritten it is not safe to call: | |
354 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
355 | */ | |
356 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
357 | for (i = 0; i < sap->num_sections && sap->other[i].name; i++) | |
358 | { | |
359 | int sectindex = sap->other[i].sectindex; | |
360 | ||
361 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
362 | } | |
363 | return sap; | |
364 | } | |
62557bbc | 365 | |
c378eb4e | 366 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
367 | |
368 | extern void | |
369 | free_section_addr_info (struct section_addr_info *sap) | |
370 | { | |
371 | int idx; | |
372 | ||
a39a16c4 | 373 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 374 | if (sap->other[idx].name) |
b8c9b27d KB |
375 | xfree (sap->other[idx].name); |
376 | xfree (sap); | |
62557bbc KB |
377 | } |
378 | ||
379 | ||
e8289572 JB |
380 | /* Initialize OBJFILE's sect_index_* members. */ |
381 | static void | |
382 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 383 | { |
e8289572 | 384 | asection *sect; |
c906108c | 385 | int i; |
5417f6dc | 386 | |
b8fbeb18 | 387 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 388 | if (sect) |
b8fbeb18 EZ |
389 | objfile->sect_index_text = sect->index; |
390 | ||
391 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 392 | if (sect) |
b8fbeb18 EZ |
393 | objfile->sect_index_data = sect->index; |
394 | ||
395 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 396 | if (sect) |
b8fbeb18 EZ |
397 | objfile->sect_index_bss = sect->index; |
398 | ||
399 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 400 | if (sect) |
b8fbeb18 EZ |
401 | objfile->sect_index_rodata = sect->index; |
402 | ||
bbcd32ad FF |
403 | /* This is where things get really weird... We MUST have valid |
404 | indices for the various sect_index_* members or gdb will abort. | |
405 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
406 | accomodate that. First, check for a file with the standard |
407 | one or two segments. */ | |
408 | ||
409 | symfile_find_segment_sections (objfile); | |
410 | ||
411 | /* Except when explicitly adding symbol files at some address, | |
412 | section_offsets contains nothing but zeros, so it doesn't matter | |
413 | which slot in section_offsets the individual sect_index_* members | |
414 | index into. So if they are all zero, it is safe to just point | |
415 | all the currently uninitialized indices to the first slot. But | |
416 | beware: if this is the main executable, it may be relocated | |
417 | later, e.g. by the remote qOffsets packet, and then this will | |
418 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
419 | |
420 | for (i = 0; i < objfile->num_sections; i++) | |
421 | { | |
422 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
423 | { | |
424 | break; | |
425 | } | |
426 | } | |
427 | if (i == objfile->num_sections) | |
428 | { | |
429 | if (objfile->sect_index_text == -1) | |
430 | objfile->sect_index_text = 0; | |
431 | if (objfile->sect_index_data == -1) | |
432 | objfile->sect_index_data = 0; | |
433 | if (objfile->sect_index_bss == -1) | |
434 | objfile->sect_index_bss = 0; | |
435 | if (objfile->sect_index_rodata == -1) | |
436 | objfile->sect_index_rodata = 0; | |
437 | } | |
b8fbeb18 | 438 | } |
c906108c | 439 | |
c1bd25fd DJ |
440 | /* The arguments to place_section. */ |
441 | ||
442 | struct place_section_arg | |
443 | { | |
444 | struct section_offsets *offsets; | |
445 | CORE_ADDR lowest; | |
446 | }; | |
447 | ||
448 | /* Find a unique offset to use for loadable section SECT if | |
449 | the user did not provide an offset. */ | |
450 | ||
2c0b251b | 451 | static void |
c1bd25fd DJ |
452 | place_section (bfd *abfd, asection *sect, void *obj) |
453 | { | |
454 | struct place_section_arg *arg = obj; | |
455 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
456 | int done; | |
3bd72c6f | 457 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 458 | |
2711e456 DJ |
459 | /* We are only interested in allocated sections. */ |
460 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
461 | return; |
462 | ||
463 | /* If the user specified an offset, honor it. */ | |
464 | if (offsets[sect->index] != 0) | |
465 | return; | |
466 | ||
467 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
468 | start_addr = (arg->lowest + align - 1) & -align; |
469 | ||
c1bd25fd DJ |
470 | do { |
471 | asection *cur_sec; | |
c1bd25fd | 472 | |
c1bd25fd DJ |
473 | done = 1; |
474 | ||
475 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
476 | { | |
477 | int indx = cur_sec->index; | |
c1bd25fd DJ |
478 | |
479 | /* We don't need to compare against ourself. */ | |
480 | if (cur_sec == sect) | |
481 | continue; | |
482 | ||
2711e456 DJ |
483 | /* We can only conflict with allocated sections. */ |
484 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
485 | continue; |
486 | ||
487 | /* If the section offset is 0, either the section has not been placed | |
488 | yet, or it was the lowest section placed (in which case LOWEST | |
489 | will be past its end). */ | |
490 | if (offsets[indx] == 0) | |
491 | continue; | |
492 | ||
493 | /* If this section would overlap us, then we must move up. */ | |
494 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
495 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
496 | { | |
497 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
498 | start_addr = (start_addr + align - 1) & -align; | |
499 | done = 0; | |
3bd72c6f | 500 | break; |
c1bd25fd DJ |
501 | } |
502 | ||
503 | /* Otherwise, we appear to be OK. So far. */ | |
504 | } | |
505 | } | |
506 | while (!done); | |
507 | ||
508 | offsets[sect->index] = start_addr; | |
509 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 510 | } |
e8289572 | 511 | |
75242ef4 JK |
512 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
513 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
514 | entries. */ | |
e8289572 JB |
515 | |
516 | void | |
75242ef4 JK |
517 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
518 | int num_sections, | |
519 | struct section_addr_info *addrs) | |
e8289572 JB |
520 | { |
521 | int i; | |
522 | ||
75242ef4 | 523 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 524 | |
c378eb4e | 525 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 526 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 527 | { |
75242ef4 | 528 | struct other_sections *osp; |
e8289572 | 529 | |
75242ef4 | 530 | osp = &addrs->other[i]; |
5488dafb | 531 | if (osp->sectindex == -1) |
e8289572 JB |
532 | continue; |
533 | ||
c378eb4e | 534 | /* Record all sections in offsets. */ |
e8289572 | 535 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 536 | the BFD index. */ |
75242ef4 JK |
537 | section_offsets->offsets[osp->sectindex] = osp->addr; |
538 | } | |
539 | } | |
540 | ||
1276c759 JK |
541 | /* Transform section name S for a name comparison. prelink can split section |
542 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
543 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
544 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
545 | (`.sbss') section has invalid (increased) virtual address. */ | |
546 | ||
547 | static const char * | |
548 | addr_section_name (const char *s) | |
549 | { | |
550 | if (strcmp (s, ".dynbss") == 0) | |
551 | return ".bss"; | |
552 | if (strcmp (s, ".sdynbss") == 0) | |
553 | return ".sbss"; | |
554 | ||
555 | return s; | |
556 | } | |
557 | ||
82ccf5a5 JK |
558 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
559 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
560 | ||
561 | static int | |
562 | addrs_section_compar (const void *ap, const void *bp) | |
563 | { | |
564 | const struct other_sections *a = *((struct other_sections **) ap); | |
565 | const struct other_sections *b = *((struct other_sections **) bp); | |
566 | int retval, a_idx, b_idx; | |
567 | ||
1276c759 | 568 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
569 | if (retval) |
570 | return retval; | |
571 | ||
5488dafb | 572 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
573 | } |
574 | ||
575 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
576 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
577 | ||
578 | static struct other_sections ** | |
579 | addrs_section_sort (struct section_addr_info *addrs) | |
580 | { | |
581 | struct other_sections **array; | |
582 | int i; | |
583 | ||
584 | /* `+ 1' for the NULL terminator. */ | |
585 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
586 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
587 | array[i] = &addrs->other[i]; | |
588 | array[i] = NULL; | |
589 | ||
590 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
591 | ||
592 | return array; | |
593 | } | |
594 | ||
75242ef4 | 595 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
596 | also SECTINDEXes specific to ABFD there. This function can be used to |
597 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
598 | |
599 | void | |
600 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
601 | { | |
602 | asection *lower_sect; | |
75242ef4 JK |
603 | CORE_ADDR lower_offset; |
604 | int i; | |
82ccf5a5 JK |
605 | struct cleanup *my_cleanup; |
606 | struct section_addr_info *abfd_addrs; | |
607 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
608 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
609 | |
610 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
611 | continguous sections. */ |
612 | lower_sect = NULL; | |
613 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
614 | if (lower_sect == NULL) |
615 | { | |
616 | warning (_("no loadable sections found in added symbol-file %s"), | |
617 | bfd_get_filename (abfd)); | |
618 | lower_offset = 0; | |
e8289572 | 619 | } |
75242ef4 JK |
620 | else |
621 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
622 | ||
82ccf5a5 JK |
623 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
624 | in ABFD. Section names are not unique - there can be multiple sections of | |
625 | the same name. Also the sections of the same name do not have to be | |
626 | adjacent to each other. Some sections may be present only in one of the | |
627 | files. Even sections present in both files do not have to be in the same | |
628 | order. | |
629 | ||
630 | Use stable sort by name for the sections in both files. Then linearly | |
631 | scan both lists matching as most of the entries as possible. */ | |
632 | ||
633 | addrs_sorted = addrs_section_sort (addrs); | |
634 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
635 | ||
636 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
637 | make_cleanup_free_section_addr_info (abfd_addrs); | |
638 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
639 | make_cleanup (xfree, abfd_addrs_sorted); | |
640 | ||
c378eb4e MS |
641 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
642 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
643 | |
644 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
645 | * addrs->num_sections); | |
646 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
647 | ||
648 | while (*addrs_sorted) | |
649 | { | |
1276c759 | 650 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
651 | |
652 | while (*abfd_addrs_sorted | |
1276c759 JK |
653 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
654 | sect_name) < 0) | |
82ccf5a5 JK |
655 | abfd_addrs_sorted++; |
656 | ||
657 | if (*abfd_addrs_sorted | |
1276c759 JK |
658 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
659 | sect_name) == 0) | |
82ccf5a5 JK |
660 | { |
661 | int index_in_addrs; | |
662 | ||
663 | /* Make the found item directly addressable from ADDRS. */ | |
664 | index_in_addrs = *addrs_sorted - addrs->other; | |
665 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
666 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
667 | ||
668 | /* Never use the same ABFD entry twice. */ | |
669 | abfd_addrs_sorted++; | |
670 | } | |
671 | ||
672 | addrs_sorted++; | |
673 | } | |
674 | ||
75242ef4 JK |
675 | /* Calculate offsets for the loadable sections. |
676 | FIXME! Sections must be in order of increasing loadable section | |
677 | so that contiguous sections can use the lower-offset!!! | |
678 | ||
679 | Adjust offsets if the segments are not contiguous. | |
680 | If the section is contiguous, its offset should be set to | |
681 | the offset of the highest loadable section lower than it | |
682 | (the loadable section directly below it in memory). | |
683 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
684 | ||
685 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
686 | { | |
82ccf5a5 | 687 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
688 | |
689 | if (sect) | |
75242ef4 | 690 | { |
c378eb4e | 691 | /* This is the index used by BFD. */ |
82ccf5a5 | 692 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
693 | |
694 | if (addrs->other[i].addr != 0) | |
75242ef4 | 695 | { |
82ccf5a5 | 696 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 697 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
698 | } |
699 | else | |
672d9c23 | 700 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
701 | } |
702 | else | |
672d9c23 | 703 | { |
1276c759 JK |
704 | /* addr_section_name transformation is not used for SECT_NAME. */ |
705 | const char *sect_name = addrs->other[i].name; | |
706 | ||
b0fcb67f JK |
707 | /* This section does not exist in ABFD, which is normally |
708 | unexpected and we want to issue a warning. | |
709 | ||
4d9743af JK |
710 | However, the ELF prelinker does create a few sections which are |
711 | marked in the main executable as loadable (they are loaded in | |
712 | memory from the DYNAMIC segment) and yet are not present in | |
713 | separate debug info files. This is fine, and should not cause | |
714 | a warning. Shared libraries contain just the section | |
715 | ".gnu.liblist" but it is not marked as loadable there. There is | |
716 | no other way to identify them than by their name as the sections | |
1276c759 JK |
717 | created by prelink have no special flags. |
718 | ||
719 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
720 | |
721 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 722 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
723 | || (strcmp (sect_name, ".bss") == 0 |
724 | && i > 0 | |
725 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
726 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
727 | || (strcmp (sect_name, ".sbss") == 0 | |
728 | && i > 0 | |
729 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
730 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
731 | warning (_("section %s not found in %s"), sect_name, |
732 | bfd_get_filename (abfd)); | |
733 | ||
672d9c23 | 734 | addrs->other[i].addr = 0; |
5488dafb | 735 | addrs->other[i].sectindex = -1; |
672d9c23 | 736 | } |
75242ef4 | 737 | } |
82ccf5a5 JK |
738 | |
739 | do_cleanups (my_cleanup); | |
75242ef4 JK |
740 | } |
741 | ||
742 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
743 | of how to represent it for fast symbol reading. This is the default | |
744 | version of the sym_fns.sym_offsets function for symbol readers that | |
745 | don't need to do anything special. It allocates a section_offsets table | |
746 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
747 | ||
748 | void | |
749 | default_symfile_offsets (struct objfile *objfile, | |
750 | struct section_addr_info *addrs) | |
751 | { | |
752 | objfile->num_sections = bfd_count_sections (objfile->obfd); | |
753 | objfile->section_offsets = (struct section_offsets *) | |
754 | obstack_alloc (&objfile->objfile_obstack, | |
755 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
756 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
757 | objfile->num_sections, addrs); | |
e8289572 | 758 | |
c1bd25fd DJ |
759 | /* For relocatable files, all loadable sections will start at zero. |
760 | The zero is meaningless, so try to pick arbitrary addresses such | |
761 | that no loadable sections overlap. This algorithm is quadratic, | |
762 | but the number of sections in a single object file is generally | |
763 | small. */ | |
764 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
765 | { | |
766 | struct place_section_arg arg; | |
2711e456 DJ |
767 | bfd *abfd = objfile->obfd; |
768 | asection *cur_sec; | |
2711e456 DJ |
769 | |
770 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
771 | /* We do not expect this to happen; just skip this step if the | |
772 | relocatable file has a section with an assigned VMA. */ | |
773 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
774 | break; | |
775 | ||
776 | if (cur_sec == NULL) | |
777 | { | |
778 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
779 | ||
780 | /* Pick non-overlapping offsets for sections the user did not | |
781 | place explicitly. */ | |
782 | arg.offsets = objfile->section_offsets; | |
783 | arg.lowest = 0; | |
784 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
785 | ||
786 | /* Correctly filling in the section offsets is not quite | |
787 | enough. Relocatable files have two properties that | |
788 | (most) shared objects do not: | |
789 | ||
790 | - Their debug information will contain relocations. Some | |
791 | shared libraries do also, but many do not, so this can not | |
792 | be assumed. | |
793 | ||
794 | - If there are multiple code sections they will be loaded | |
795 | at different relative addresses in memory than they are | |
796 | in the objfile, since all sections in the file will start | |
797 | at address zero. | |
798 | ||
799 | Because GDB has very limited ability to map from an | |
800 | address in debug info to the correct code section, | |
801 | it relies on adding SECT_OFF_TEXT to things which might be | |
802 | code. If we clear all the section offsets, and set the | |
803 | section VMAs instead, then symfile_relocate_debug_section | |
804 | will return meaningful debug information pointing at the | |
805 | correct sections. | |
806 | ||
807 | GDB has too many different data structures for section | |
808 | addresses - a bfd, objfile, and so_list all have section | |
809 | tables, as does exec_ops. Some of these could probably | |
810 | be eliminated. */ | |
811 | ||
812 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
813 | cur_sec = cur_sec->next) | |
814 | { | |
815 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
816 | continue; | |
817 | ||
818 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
819 | exec_set_section_address (bfd_get_filename (abfd), |
820 | cur_sec->index, | |
30510692 | 821 | offsets[cur_sec->index]); |
2711e456 DJ |
822 | offsets[cur_sec->index] = 0; |
823 | } | |
824 | } | |
c1bd25fd DJ |
825 | } |
826 | ||
e8289572 | 827 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 828 | .rodata sections. */ |
e8289572 JB |
829 | init_objfile_sect_indices (objfile); |
830 | } | |
831 | ||
832 | ||
31d99776 DJ |
833 | /* Divide the file into segments, which are individual relocatable units. |
834 | This is the default version of the sym_fns.sym_segments function for | |
835 | symbol readers that do not have an explicit representation of segments. | |
836 | It assumes that object files do not have segments, and fully linked | |
837 | files have a single segment. */ | |
838 | ||
839 | struct symfile_segment_data * | |
840 | default_symfile_segments (bfd *abfd) | |
841 | { | |
842 | int num_sections, i; | |
843 | asection *sect; | |
844 | struct symfile_segment_data *data; | |
845 | CORE_ADDR low, high; | |
846 | ||
847 | /* Relocatable files contain enough information to position each | |
848 | loadable section independently; they should not be relocated | |
849 | in segments. */ | |
850 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
851 | return NULL; | |
852 | ||
853 | /* Make sure there is at least one loadable section in the file. */ | |
854 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
855 | { | |
856 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
857 | continue; | |
858 | ||
859 | break; | |
860 | } | |
861 | if (sect == NULL) | |
862 | return NULL; | |
863 | ||
864 | low = bfd_get_section_vma (abfd, sect); | |
865 | high = low + bfd_get_section_size (sect); | |
866 | ||
867 | data = XZALLOC (struct symfile_segment_data); | |
868 | data->num_segments = 1; | |
869 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
870 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
871 | ||
872 | num_sections = bfd_count_sections (abfd); | |
873 | data->segment_info = XCALLOC (num_sections, int); | |
874 | ||
875 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
876 | { | |
877 | CORE_ADDR vma; | |
878 | ||
879 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
880 | continue; | |
881 | ||
882 | vma = bfd_get_section_vma (abfd, sect); | |
883 | if (vma < low) | |
884 | low = vma; | |
885 | if (vma + bfd_get_section_size (sect) > high) | |
886 | high = vma + bfd_get_section_size (sect); | |
887 | ||
888 | data->segment_info[i] = 1; | |
889 | } | |
890 | ||
891 | data->segment_bases[0] = low; | |
892 | data->segment_sizes[0] = high - low; | |
893 | ||
894 | return data; | |
895 | } | |
896 | ||
c906108c SS |
897 | /* Process a symbol file, as either the main file or as a dynamically |
898 | loaded file. | |
899 | ||
96baa820 JM |
900 | OBJFILE is where the symbols are to be read from. |
901 | ||
7e8580c1 JB |
902 | ADDRS is the list of section load addresses. If the user has given |
903 | an 'add-symbol-file' command, then this is the list of offsets and | |
904 | addresses he or she provided as arguments to the command; or, if | |
905 | we're handling a shared library, these are the actual addresses the | |
906 | sections are loaded at, according to the inferior's dynamic linker | |
907 | (as gleaned by GDB's shared library code). We convert each address | |
908 | into an offset from the section VMA's as it appears in the object | |
909 | file, and then call the file's sym_offsets function to convert this | |
910 | into a format-specific offset table --- a `struct section_offsets'. | |
911 | If ADDRS is non-zero, OFFSETS must be zero. | |
912 | ||
913 | OFFSETS is a table of section offsets already in the right | |
914 | format-specific representation. NUM_OFFSETS is the number of | |
915 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
916 | assume this is the proper table the call to sym_offsets described | |
917 | above would produce. Instead of calling sym_offsets, we just dump | |
918 | it right into objfile->section_offsets. (When we're re-reading | |
919 | symbols from an objfile, we don't have the original load address | |
920 | list any more; all we have is the section offset table.) If | |
921 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 922 | |
7eedccfa PP |
923 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
924 | an extra symbol file such as dynamically loaded code, and wether | |
925 | breakpoint reset should be deferred. */ | |
c906108c SS |
926 | |
927 | void | |
7e8580c1 JB |
928 | syms_from_objfile (struct objfile *objfile, |
929 | struct section_addr_info *addrs, | |
930 | struct section_offsets *offsets, | |
931 | int num_offsets, | |
7eedccfa | 932 | int add_flags) |
c906108c | 933 | { |
a39a16c4 | 934 | struct section_addr_info *local_addr = NULL; |
c906108c | 935 | struct cleanup *old_chain; |
7eedccfa | 936 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 937 | |
7e8580c1 | 938 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 939 | |
c906108c | 940 | init_entry_point_info (objfile); |
31d99776 | 941 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 942 | |
75245b24 | 943 | if (objfile->sf == NULL) |
c378eb4e | 944 | return; /* No symbols. */ |
75245b24 | 945 | |
c906108c SS |
946 | /* Make sure that partially constructed symbol tables will be cleaned up |
947 | if an error occurs during symbol reading. */ | |
74b7792f | 948 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 949 | |
a39a16c4 MM |
950 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
951 | list. We now establish the convention that an addr of zero means | |
c378eb4e | 952 | no load address was specified. */ |
a39a16c4 MM |
953 | if (! addrs && ! offsets) |
954 | { | |
5417f6dc | 955 | local_addr |
a39a16c4 MM |
956 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
957 | make_cleanup (xfree, local_addr); | |
958 | addrs = local_addr; | |
959 | } | |
960 | ||
961 | /* Now either addrs or offsets is non-zero. */ | |
962 | ||
c5aa993b | 963 | if (mainline) |
c906108c SS |
964 | { |
965 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 966 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 967 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
968 | |
969 | /* Since no error yet, throw away the old symbol table. */ | |
970 | ||
971 | if (symfile_objfile != NULL) | |
972 | { | |
973 | free_objfile (symfile_objfile); | |
adb7f338 | 974 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
975 | } |
976 | ||
977 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
978 | If the user wants to get rid of them, they should do "symbol-file" |
979 | without arguments first. Not sure this is the best behavior | |
980 | (PR 2207). */ | |
c906108c | 981 | |
c5aa993b | 982 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
983 | } |
984 | ||
985 | /* Convert addr into an offset rather than an absolute address. | |
986 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 987 | and assume that <addr> is where that got loaded. |
c906108c | 988 | |
53a5351d JM |
989 | We no longer warn if the lowest section is not a text segment (as |
990 | happens for the PA64 port. */ | |
0d15807d | 991 | if (addrs && addrs->other[0].name) |
75242ef4 | 992 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
993 | |
994 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
995 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 996 | initial symbol reading for this file. */ |
c906108c | 997 | |
c5aa993b | 998 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 999 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 1000 | |
7e8580c1 JB |
1001 | if (addrs) |
1002 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
1003 | else | |
1004 | { | |
1005 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
1006 | ||
1007 | /* Just copy in the offset table directly as given to us. */ | |
1008 | objfile->num_sections = num_offsets; | |
1009 | objfile->section_offsets | |
1010 | = ((struct section_offsets *) | |
8b92e4d5 | 1011 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
1012 | memcpy (objfile->section_offsets, offsets, size); |
1013 | ||
1014 | init_objfile_sect_indices (objfile); | |
1015 | } | |
c906108c | 1016 | |
f4352531 | 1017 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 1018 | |
b11896a5 TT |
1019 | if ((add_flags & SYMFILE_NO_READ) == 0) |
1020 | require_partial_symbols (objfile, 0); | |
1021 | ||
c906108c SS |
1022 | /* Discard cleanups as symbol reading was successful. */ |
1023 | ||
1024 | discard_cleanups (old_chain); | |
f7545552 | 1025 | xfree (local_addr); |
c906108c SS |
1026 | } |
1027 | ||
1028 | /* Perform required actions after either reading in the initial | |
1029 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1030 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1031 | |
c906108c | 1032 | void |
7eedccfa | 1033 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1034 | { |
c906108c | 1035 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1036 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1037 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1038 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1039 | { |
1040 | /* OK, make it the "real" symbol file. */ | |
1041 | symfile_objfile = objfile; | |
1042 | ||
c1e56572 | 1043 | clear_symtab_users (add_flags); |
c906108c | 1044 | } |
7eedccfa | 1045 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1046 | { |
69de3c6a | 1047 | breakpoint_re_set (); |
c906108c SS |
1048 | } |
1049 | ||
1050 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1051 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1052 | } |
1053 | ||
1054 | /* Process a symbol file, as either the main file or as a dynamically | |
1055 | loaded file. | |
1056 | ||
5417f6dc RM |
1057 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
1058 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 1059 | |
7eedccfa PP |
1060 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1061 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1062 | |
1063 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1064 | syms_from_objfile, above. |
1065 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1066 | |
63524580 JK |
1067 | PARENT is the original objfile if ABFD is a separate debug info file. |
1068 | Otherwise PARENT is NULL. | |
1069 | ||
c906108c | 1070 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1071 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1072 | |
7904e09f | 1073 | static struct objfile * |
7eedccfa PP |
1074 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1075 | int add_flags, | |
7904e09f JB |
1076 | struct section_addr_info *addrs, |
1077 | struct section_offsets *offsets, | |
1078 | int num_offsets, | |
63524580 | 1079 | int flags, struct objfile *parent) |
c906108c SS |
1080 | { |
1081 | struct objfile *objfile; | |
a39a16c4 | 1082 | struct cleanup *my_cleanups; |
5417f6dc | 1083 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1084 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1085 | const int mainline = add_flags & SYMFILE_MAINLINE; |
b11896a5 TT |
1086 | const int should_print = ((from_tty || info_verbose) |
1087 | && (readnow_symbol_files | |
1088 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1089 | |
9291a0cd | 1090 | if (readnow_symbol_files) |
b11896a5 TT |
1091 | { |
1092 | flags |= OBJF_READNOW; | |
1093 | add_flags &= ~SYMFILE_NO_READ; | |
1094 | } | |
9291a0cd | 1095 | |
5417f6dc | 1096 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 1097 | |
5417f6dc RM |
1098 | /* Give user a chance to burp if we'd be |
1099 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1100 | |
1101 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1102 | && mainline |
c906108c | 1103 | && from_tty |
9e2f0ad4 | 1104 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1105 | error (_("Not confirmed.")); |
c906108c | 1106 | |
0838fb57 | 1107 | objfile = allocate_objfile (abfd, flags | (mainline ? OBJF_MAINLINE : 0)); |
5417f6dc | 1108 | discard_cleanups (my_cleanups); |
c906108c | 1109 | |
63524580 JK |
1110 | if (parent) |
1111 | add_separate_debug_objfile (objfile, parent); | |
1112 | ||
78a4a9b9 AC |
1113 | /* We either created a new mapped symbol table, mapped an existing |
1114 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1115 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1116 | if (should_print) |
c906108c | 1117 | { |
769d7dc4 AC |
1118 | if (deprecated_pre_add_symbol_hook) |
1119 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1120 | else |
c906108c | 1121 | { |
55333a84 DE |
1122 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1123 | wrap_here (""); | |
1124 | gdb_flush (gdb_stdout); | |
c906108c | 1125 | } |
c906108c | 1126 | } |
78a4a9b9 | 1127 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1128 | add_flags); |
c906108c SS |
1129 | |
1130 | /* We now have at least a partial symbol table. Check to see if the | |
1131 | user requested that all symbols be read on initial access via either | |
1132 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1133 | all partial symbol tables for this objfile if so. */ |
c906108c | 1134 | |
9291a0cd | 1135 | if ((flags & OBJF_READNOW)) |
c906108c | 1136 | { |
b11896a5 | 1137 | if (should_print) |
c906108c | 1138 | { |
a3f17187 | 1139 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1140 | wrap_here (""); |
1141 | gdb_flush (gdb_stdout); | |
1142 | } | |
1143 | ||
ccefe4c4 TT |
1144 | if (objfile->sf) |
1145 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1146 | } |
1147 | ||
b11896a5 | 1148 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1149 | { |
1150 | wrap_here (""); | |
55333a84 | 1151 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1152 | wrap_here (""); |
1153 | } | |
1154 | ||
b11896a5 | 1155 | if (should_print) |
c906108c | 1156 | { |
769d7dc4 AC |
1157 | if (deprecated_post_add_symbol_hook) |
1158 | deprecated_post_add_symbol_hook (); | |
c906108c | 1159 | else |
55333a84 | 1160 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1161 | } |
1162 | ||
481d0f41 JB |
1163 | /* We print some messages regardless of whether 'from_tty || |
1164 | info_verbose' is true, so make sure they go out at the right | |
1165 | time. */ | |
1166 | gdb_flush (gdb_stdout); | |
1167 | ||
109f874e | 1168 | if (objfile->sf == NULL) |
8caee43b PP |
1169 | { |
1170 | observer_notify_new_objfile (objfile); | |
c378eb4e | 1171 | return objfile; /* No symbols. */ |
8caee43b | 1172 | } |
109f874e | 1173 | |
7eedccfa | 1174 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1175 | |
06d3b283 | 1176 | observer_notify_new_objfile (objfile); |
c906108c | 1177 | |
ce7d4522 | 1178 | bfd_cache_close_all (); |
c906108c SS |
1179 | return (objfile); |
1180 | } | |
1181 | ||
9cce227f TG |
1182 | /* Add BFD as a separate debug file for OBJFILE. */ |
1183 | ||
1184 | void | |
1185 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1186 | { | |
15d123c9 | 1187 | struct objfile *new_objfile; |
089b4803 TG |
1188 | struct section_addr_info *sap; |
1189 | struct cleanup *my_cleanup; | |
1190 | ||
1191 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1192 | because sections of BFD may not match sections of OBJFILE and because | |
1193 | vma may have been modified by tools such as prelink. */ | |
1194 | sap = build_section_addr_info_from_objfile (objfile); | |
1195 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1196 | |
15d123c9 | 1197 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1198 | (bfd, symfile_flags, |
089b4803 | 1199 | sap, NULL, 0, |
9cce227f | 1200 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1201 | | OBJF_USERLOADED), |
1202 | objfile); | |
089b4803 TG |
1203 | |
1204 | do_cleanups (my_cleanup); | |
9cce227f | 1205 | } |
7904e09f | 1206 | |
eb4556d7 JB |
1207 | /* Process the symbol file ABFD, as either the main file or as a |
1208 | dynamically loaded file. | |
1209 | ||
1210 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1211 | details. */ | |
1212 | struct objfile * | |
7eedccfa | 1213 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1214 | struct section_addr_info *addrs, |
63524580 | 1215 | int flags, struct objfile *parent) |
eb4556d7 | 1216 | { |
7eedccfa | 1217 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
63524580 | 1218 | flags, parent); |
eb4556d7 JB |
1219 | } |
1220 | ||
1221 | ||
7904e09f JB |
1222 | /* Process a symbol file, as either the main file or as a dynamically |
1223 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1224 | for details. */ | |
1225 | struct objfile * | |
7eedccfa PP |
1226 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1227 | int flags) | |
7904e09f | 1228 | { |
7eedccfa | 1229 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
63524580 | 1230 | flags, NULL); |
7904e09f JB |
1231 | } |
1232 | ||
1233 | ||
d7db6da9 FN |
1234 | /* Call symbol_file_add() with default values and update whatever is |
1235 | affected by the loading of a new main(). | |
1236 | Used when the file is supplied in the gdb command line | |
1237 | and by some targets with special loading requirements. | |
1238 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1239 | argument for the switches that can only be specified in the symbol_file | |
1240 | command itself. */ | |
5417f6dc | 1241 | |
1adeb98a FN |
1242 | void |
1243 | symbol_file_add_main (char *args, int from_tty) | |
1244 | { | |
d7db6da9 FN |
1245 | symbol_file_add_main_1 (args, from_tty, 0); |
1246 | } | |
1247 | ||
1248 | static void | |
1249 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1250 | { | |
7eedccfa PP |
1251 | const int add_flags = SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0); |
1252 | symbol_file_add (args, add_flags, NULL, flags); | |
d7db6da9 | 1253 | |
d7db6da9 FN |
1254 | /* Getting new symbols may change our opinion about |
1255 | what is frameless. */ | |
1256 | reinit_frame_cache (); | |
1257 | ||
1258 | set_initial_language (); | |
1adeb98a FN |
1259 | } |
1260 | ||
1261 | void | |
1262 | symbol_file_clear (int from_tty) | |
1263 | { | |
1264 | if ((have_full_symbols () || have_partial_symbols ()) | |
1265 | && from_tty | |
0430b0d6 AS |
1266 | && (symfile_objfile |
1267 | ? !query (_("Discard symbol table from `%s'? "), | |
1268 | symfile_objfile->name) | |
1269 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1270 | error (_("Not confirmed.")); |
1adeb98a | 1271 | |
0133421a JK |
1272 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1273 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1274 | no_shared_libraries (NULL, from_tty); |
1275 | ||
0133421a JK |
1276 | free_all_objfiles (); |
1277 | ||
adb7f338 | 1278 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1279 | if (from_tty) |
1280 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1281 | } |
1282 | ||
5b5d99cf JB |
1283 | static char * |
1284 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1285 | { | |
1286 | asection *sect; | |
1287 | bfd_size_type debuglink_size; | |
1288 | unsigned long crc32; | |
1289 | char *contents; | |
1290 | int crc_offset; | |
5417f6dc | 1291 | |
5b5d99cf JB |
1292 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1293 | ||
1294 | if (sect == NULL) | |
1295 | return NULL; | |
1296 | ||
1297 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1298 | |
5b5d99cf JB |
1299 | contents = xmalloc (debuglink_size); |
1300 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1301 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1302 | ||
c378eb4e | 1303 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ |
5b5d99cf JB |
1304 | crc_offset = strlen (contents) + 1; |
1305 | crc_offset = (crc_offset + 3) & ~3; | |
1306 | ||
1307 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1308 | |
5b5d99cf JB |
1309 | *crc32_out = crc32; |
1310 | return contents; | |
1311 | } | |
1312 | ||
904578ed JK |
1313 | /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and |
1314 | return 1. Otherwise print a warning and return 0. ABFD seek position is | |
1315 | not preserved. */ | |
1316 | ||
1317 | static int | |
1318 | get_file_crc (bfd *abfd, unsigned long *file_crc_return) | |
1319 | { | |
1320 | unsigned long file_crc = 0; | |
1321 | ||
1322 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
1323 | { | |
1324 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1325 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | for (;;) | |
1330 | { | |
1331 | gdb_byte buffer[8 * 1024]; | |
1332 | bfd_size_type count; | |
1333 | ||
1334 | count = bfd_bread (buffer, sizeof (buffer), abfd); | |
1335 | if (count == (bfd_size_type) -1) | |
1336 | { | |
1337 | warning (_("Problem reading \"%s\" for CRC: %s"), | |
1338 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1339 | return 0; | |
1340 | } | |
1341 | if (count == 0) | |
1342 | break; | |
1343 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1344 | } | |
1345 | ||
1346 | *file_crc_return = file_crc; | |
1347 | return 1; | |
1348 | } | |
1349 | ||
5b5d99cf | 1350 | static int |
287ccc17 | 1351 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1352 | struct objfile *parent_objfile) |
5b5d99cf | 1353 | { |
904578ed JK |
1354 | unsigned long file_crc; |
1355 | int file_crc_p; | |
f1838a98 | 1356 | bfd *abfd; |
32a0e547 | 1357 | struct stat parent_stat, abfd_stat; |
904578ed | 1358 | int verified_as_different; |
32a0e547 JK |
1359 | |
1360 | /* Find a separate debug info file as if symbols would be present in | |
1361 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1362 | section can contain just the basename of PARENT_OBJFILE without any | |
1363 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1364 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1365 | |
0ba1096a | 1366 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1367 | return 0; |
5b5d99cf | 1368 | |
874f5765 | 1369 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1370 | |
1371 | if (!abfd) | |
5b5d99cf JB |
1372 | return 0; |
1373 | ||
0ba1096a | 1374 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1375 | |
1376 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1377 | st_ino; they always set it to zero. (Windows does provide a | |
1378 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1379 | case. While there is no guarantee that a system that provides | |
1380 | meaningful inode numbers will never set st_ino to zero, this is | |
1381 | merely an optimization, so we do not need to worry about false | |
1382 | negatives. */ | |
1383 | ||
1384 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
904578ed JK |
1385 | && abfd_stat.st_ino != 0 |
1386 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1387 | { |
904578ed JK |
1388 | if (abfd_stat.st_dev == parent_stat.st_dev |
1389 | && abfd_stat.st_ino == parent_stat.st_ino) | |
1390 | { | |
1391 | bfd_close (abfd); | |
1392 | return 0; | |
1393 | } | |
1394 | verified_as_different = 1; | |
32a0e547 | 1395 | } |
904578ed JK |
1396 | else |
1397 | verified_as_different = 0; | |
32a0e547 | 1398 | |
904578ed | 1399 | file_crc_p = get_file_crc (abfd, &file_crc); |
5b5d99cf | 1400 | |
f1838a98 | 1401 | bfd_close (abfd); |
5b5d99cf | 1402 | |
904578ed JK |
1403 | if (!file_crc_p) |
1404 | return 0; | |
1405 | ||
287ccc17 JK |
1406 | if (crc != file_crc) |
1407 | { | |
904578ed JK |
1408 | /* If one (or both) the files are accessed for example the via "remote:" |
1409 | gdbserver way it does not support the bfd_stat operation. Verify | |
1410 | whether those two files are not the same manually. */ | |
1411 | ||
1412 | if (!verified_as_different && !parent_objfile->crc32_p) | |
1413 | { | |
1414 | parent_objfile->crc32_p = get_file_crc (parent_objfile->obfd, | |
1415 | &parent_objfile->crc32); | |
1416 | if (!parent_objfile->crc32_p) | |
1417 | return 0; | |
1418 | } | |
1419 | ||
0e8aefe7 | 1420 | if (verified_as_different || parent_objfile->crc32 != file_crc) |
904578ed JK |
1421 | warning (_("the debug information found in \"%s\"" |
1422 | " does not match \"%s\" (CRC mismatch).\n"), | |
1423 | name, parent_objfile->name); | |
1424 | ||
287ccc17 JK |
1425 | return 0; |
1426 | } | |
1427 | ||
1428 | return 1; | |
5b5d99cf JB |
1429 | } |
1430 | ||
aa28a74e | 1431 | char *debug_file_directory = NULL; |
920d2a44 AC |
1432 | static void |
1433 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1434 | struct cmd_list_element *c, const char *value) | |
1435 | { | |
3e43a32a MS |
1436 | fprintf_filtered (file, |
1437 | _("The directory where separate debug " | |
1438 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1439 | value); |
1440 | } | |
5b5d99cf JB |
1441 | |
1442 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1443 | #define DEBUG_SUBDIRECTORY ".debug" | |
1444 | #endif | |
1445 | ||
9cce227f TG |
1446 | char * |
1447 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1448 | { | |
952a6d41 | 1449 | char *basename, *debugdir; |
9cce227f TG |
1450 | char *dir = NULL; |
1451 | char *debugfile = NULL; | |
1452 | char *canon_name = NULL; | |
9cce227f TG |
1453 | unsigned long crc32; |
1454 | int i; | |
5b5d99cf JB |
1455 | |
1456 | basename = get_debug_link_info (objfile, &crc32); | |
1457 | ||
1458 | if (basename == NULL) | |
287ccc17 JK |
1459 | /* There's no separate debug info, hence there's no way we could |
1460 | load it => no warning. */ | |
25522fae | 1461 | goto cleanup_return_debugfile; |
5417f6dc | 1462 | |
5b5d99cf JB |
1463 | dir = xstrdup (objfile->name); |
1464 | ||
fe36c4f4 | 1465 | /* Strip off the final filename part, leaving the directory name, |
569b05a5 | 1466 | followed by a slash. The directory can be relative or absolute. */ |
5b5d99cf JB |
1467 | for (i = strlen(dir) - 1; i >= 0; i--) |
1468 | { | |
1469 | if (IS_DIR_SEPARATOR (dir[i])) | |
1470 | break; | |
1471 | } | |
569b05a5 | 1472 | /* If I is -1 then no directory is present there and DIR will be "". */ |
5b5d99cf | 1473 | dir[i+1] = '\0'; |
5417f6dc | 1474 | |
c378eb4e | 1475 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1ffa32ee JK |
1476 | canon_name = lrealpath (dir); |
1477 | i = strlen (dir); | |
1478 | if (canon_name && strlen (canon_name) > i) | |
1479 | i = strlen (canon_name); | |
1480 | ||
25522fae JK |
1481 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1482 | + i | |
1483 | + strlen (DEBUG_SUBDIRECTORY) | |
1484 | + strlen ("/") | |
1485 | + strlen (basename) | |
1486 | + 1); | |
5b5d99cf JB |
1487 | |
1488 | /* First try in the same directory as the original file. */ | |
1489 | strcpy (debugfile, dir); | |
1490 | strcat (debugfile, basename); | |
1491 | ||
32a0e547 | 1492 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1493 | goto cleanup_return_debugfile; |
5417f6dc | 1494 | |
5b5d99cf JB |
1495 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1496 | strcpy (debugfile, dir); | |
1497 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1498 | strcat (debugfile, "/"); | |
1499 | strcat (debugfile, basename); | |
1500 | ||
32a0e547 | 1501 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1502 | goto cleanup_return_debugfile; |
5417f6dc | 1503 | |
24ddea62 JK |
1504 | /* Then try in the global debugfile directories. |
1505 | ||
1506 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1507 | cause "/..." lookups. */ | |
5417f6dc | 1508 | |
24ddea62 JK |
1509 | debugdir = debug_file_directory; |
1510 | do | |
aa28a74e | 1511 | { |
24ddea62 JK |
1512 | char *debugdir_end; |
1513 | ||
1514 | while (*debugdir == DIRNAME_SEPARATOR) | |
1515 | debugdir++; | |
1516 | ||
1517 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1518 | if (debugdir_end == NULL) | |
1519 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1520 | ||
1521 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1522 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1523 | strcat (debugfile, "/"); |
24ddea62 | 1524 | strcat (debugfile, dir); |
aa28a74e DJ |
1525 | strcat (debugfile, basename); |
1526 | ||
32a0e547 | 1527 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1528 | goto cleanup_return_debugfile; |
24ddea62 JK |
1529 | |
1530 | /* If the file is in the sysroot, try using its base path in the | |
1531 | global debugfile directory. */ | |
1532 | if (canon_name | |
0ba1096a KT |
1533 | && filename_ncmp (canon_name, gdb_sysroot, |
1534 | strlen (gdb_sysroot)) == 0 | |
24ddea62 JK |
1535 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) |
1536 | { | |
1537 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1538 | debugfile[debugdir_end - debugdir] = 0; | |
1539 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1540 | strcat (debugfile, "/"); | |
1541 | strcat (debugfile, basename); | |
1542 | ||
32a0e547 | 1543 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
24ddea62 JK |
1544 | goto cleanup_return_debugfile; |
1545 | } | |
1546 | ||
1547 | debugdir = debugdir_end; | |
aa28a74e | 1548 | } |
24ddea62 | 1549 | while (*debugdir != 0); |
aa28a74e | 1550 | |
25522fae JK |
1551 | xfree (debugfile); |
1552 | debugfile = NULL; | |
aa28a74e | 1553 | |
25522fae JK |
1554 | cleanup_return_debugfile: |
1555 | xfree (canon_name); | |
5b5d99cf JB |
1556 | xfree (basename); |
1557 | xfree (dir); | |
25522fae | 1558 | return debugfile; |
5b5d99cf JB |
1559 | } |
1560 | ||
1561 | ||
c906108c SS |
1562 | /* This is the symbol-file command. Read the file, analyze its |
1563 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1564 | the command is rather bizarre: |
1565 | ||
1566 | 1. The function buildargv implements various quoting conventions | |
1567 | which are undocumented and have little or nothing in common with | |
1568 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1569 | ||
1570 | 2. Options are used, which are not generally used in GDB (perhaps | |
1571 | "set mapped on", "set readnow on" would be better) | |
1572 | ||
1573 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1574 | conventions (because it is confusing and inconvenient). */ |
1575 | ||
1576 | void | |
fba45db2 | 1577 | symbol_file_command (char *args, int from_tty) |
c906108c | 1578 | { |
c906108c SS |
1579 | dont_repeat (); |
1580 | ||
1581 | if (args == NULL) | |
1582 | { | |
1adeb98a | 1583 | symbol_file_clear (from_tty); |
c906108c SS |
1584 | } |
1585 | else | |
1586 | { | |
d1a41061 | 1587 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1588 | int flags = OBJF_USERLOADED; |
1589 | struct cleanup *cleanups; | |
1590 | char *name = NULL; | |
1591 | ||
7a292a7a | 1592 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1593 | while (*argv != NULL) |
1594 | { | |
78a4a9b9 AC |
1595 | if (strcmp (*argv, "-readnow") == 0) |
1596 | flags |= OBJF_READNOW; | |
1597 | else if (**argv == '-') | |
8a3fe4f8 | 1598 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1599 | else |
1600 | { | |
cb2f3a29 | 1601 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1602 | name = *argv; |
78a4a9b9 | 1603 | } |
cb2f3a29 | 1604 | |
c906108c SS |
1605 | argv++; |
1606 | } | |
1607 | ||
1608 | if (name == NULL) | |
cb2f3a29 MK |
1609 | error (_("no symbol file name was specified")); |
1610 | ||
c906108c SS |
1611 | do_cleanups (cleanups); |
1612 | } | |
1613 | } | |
1614 | ||
1615 | /* Set the initial language. | |
1616 | ||
cb2f3a29 MK |
1617 | FIXME: A better solution would be to record the language in the |
1618 | psymtab when reading partial symbols, and then use it (if known) to | |
1619 | set the language. This would be a win for formats that encode the | |
1620 | language in an easily discoverable place, such as DWARF. For | |
1621 | stabs, we can jump through hoops looking for specially named | |
1622 | symbols or try to intuit the language from the specific type of | |
1623 | stabs we find, but we can't do that until later when we read in | |
1624 | full symbols. */ | |
c906108c | 1625 | |
8b60591b | 1626 | void |
fba45db2 | 1627 | set_initial_language (void) |
c906108c | 1628 | { |
c5aa993b | 1629 | enum language lang = language_unknown; |
c906108c | 1630 | |
01f8c46d JK |
1631 | if (language_of_main != language_unknown) |
1632 | lang = language_of_main; | |
1633 | else | |
1634 | { | |
1635 | const char *filename; | |
1636 | ||
1637 | filename = find_main_filename (); | |
1638 | if (filename != NULL) | |
1639 | lang = deduce_language_from_filename (filename); | |
1640 | } | |
cb2f3a29 | 1641 | |
ccefe4c4 TT |
1642 | if (lang == language_unknown) |
1643 | { | |
1644 | /* Make C the default language */ | |
1645 | lang = language_c; | |
c906108c | 1646 | } |
ccefe4c4 TT |
1647 | |
1648 | set_language (lang); | |
1649 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1650 | } |
1651 | ||
874f5765 TG |
1652 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1653 | open it normally. */ | |
1654 | ||
1655 | bfd * | |
1656 | bfd_open_maybe_remote (const char *name) | |
1657 | { | |
1658 | if (remote_filename_p (name)) | |
1659 | return remote_bfd_open (name, gnutarget); | |
1660 | else | |
1661 | return bfd_openr (name, gnutarget); | |
1662 | } | |
1663 | ||
1664 | ||
cb2f3a29 MK |
1665 | /* Open the file specified by NAME and hand it off to BFD for |
1666 | preliminary analysis. Return a newly initialized bfd *, which | |
1667 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1668 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1669 | |
1670 | bfd * | |
fba45db2 | 1671 | symfile_bfd_open (char *name) |
c906108c SS |
1672 | { |
1673 | bfd *sym_bfd; | |
1674 | int desc; | |
1675 | char *absolute_name; | |
1676 | ||
f1838a98 UW |
1677 | if (remote_filename_p (name)) |
1678 | { | |
1679 | name = xstrdup (name); | |
1680 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1681 | if (!sym_bfd) | |
1682 | { | |
1683 | make_cleanup (xfree, name); | |
1684 | error (_("`%s': can't open to read symbols: %s."), name, | |
1685 | bfd_errmsg (bfd_get_error ())); | |
1686 | } | |
1687 | ||
1688 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1689 | { | |
1690 | bfd_close (sym_bfd); | |
1691 | make_cleanup (xfree, name); | |
1692 | error (_("`%s': can't read symbols: %s."), name, | |
1693 | bfd_errmsg (bfd_get_error ())); | |
1694 | } | |
1695 | ||
1696 | return sym_bfd; | |
1697 | } | |
1698 | ||
cb2f3a29 | 1699 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1700 | |
1701 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1702 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1703 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1704 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1705 | if (desc < 0) |
1706 | { | |
1707 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1708 | |
c906108c | 1709 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1710 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1711 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1712 | } |
1713 | #endif | |
1714 | if (desc < 0) | |
1715 | { | |
b8c9b27d | 1716 | make_cleanup (xfree, name); |
c906108c SS |
1717 | perror_with_name (name); |
1718 | } | |
cb2f3a29 MK |
1719 | |
1720 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
c378eb4e | 1721 | bfd. It'll be freed in free_objfile(). */ |
cb2f3a29 MK |
1722 | xfree (name); |
1723 | name = absolute_name; | |
c906108c | 1724 | |
9f76c2cd | 1725 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1726 | if (!sym_bfd) |
1727 | { | |
1728 | close (desc); | |
b8c9b27d | 1729 | make_cleanup (xfree, name); |
f1838a98 | 1730 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1731 | bfd_errmsg (bfd_get_error ())); |
1732 | } | |
549c1eea | 1733 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1734 | |
1735 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1736 | { | |
cb2f3a29 MK |
1737 | /* FIXME: should be checking for errors from bfd_close (for one |
1738 | thing, on error it does not free all the storage associated | |
1739 | with the bfd). */ | |
1740 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1741 | make_cleanup (xfree, name); |
f1838a98 | 1742 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1743 | bfd_errmsg (bfd_get_error ())); |
1744 | } | |
cb2f3a29 | 1745 | |
4f6f9936 JK |
1746 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1747 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1748 | ||
cb2f3a29 | 1749 | return sym_bfd; |
c906108c SS |
1750 | } |
1751 | ||
cb2f3a29 MK |
1752 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1753 | the section was not found. */ | |
1754 | ||
0e931cf0 JB |
1755 | int |
1756 | get_section_index (struct objfile *objfile, char *section_name) | |
1757 | { | |
1758 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1759 | |
0e931cf0 JB |
1760 | if (sect) |
1761 | return sect->index; | |
1762 | else | |
1763 | return -1; | |
1764 | } | |
1765 | ||
cb2f3a29 MK |
1766 | /* Link SF into the global symtab_fns list. Called on startup by the |
1767 | _initialize routine in each object file format reader, to register | |
b021a221 | 1768 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1769 | |
1770 | void | |
00b5771c | 1771 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1772 | { |
00b5771c | 1773 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1774 | } |
1775 | ||
cb2f3a29 MK |
1776 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1777 | either returns or calls error(). The result is an initialized | |
1778 | struct sym_fns in the objfile structure, that contains cached | |
1779 | information about the symbol file. */ | |
c906108c | 1780 | |
00b5771c | 1781 | static const struct sym_fns * |
31d99776 | 1782 | find_sym_fns (bfd *abfd) |
c906108c | 1783 | { |
00b5771c | 1784 | const struct sym_fns *sf; |
31d99776 | 1785 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1786 | int i; |
c906108c | 1787 | |
75245b24 MS |
1788 | if (our_flavour == bfd_target_srec_flavour |
1789 | || our_flavour == bfd_target_ihex_flavour | |
1790 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1791 | return NULL; /* No symbols. */ |
75245b24 | 1792 | |
00b5771c | 1793 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1794 | if (our_flavour == sf->sym_flavour) |
1795 | return sf; | |
cb2f3a29 | 1796 | |
8a3fe4f8 | 1797 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1798 | bfd_get_target (abfd)); |
c906108c SS |
1799 | } |
1800 | \f | |
cb2f3a29 | 1801 | |
c906108c SS |
1802 | /* This function runs the load command of our current target. */ |
1803 | ||
1804 | static void | |
fba45db2 | 1805 | load_command (char *arg, int from_tty) |
c906108c | 1806 | { |
e5cc9f32 JB |
1807 | dont_repeat (); |
1808 | ||
4487aabf PA |
1809 | /* The user might be reloading because the binary has changed. Take |
1810 | this opportunity to check. */ | |
1811 | reopen_exec_file (); | |
1812 | reread_symbols (); | |
1813 | ||
c906108c | 1814 | if (arg == NULL) |
1986bccd AS |
1815 | { |
1816 | char *parg; | |
1817 | int count = 0; | |
1818 | ||
1819 | parg = arg = get_exec_file (1); | |
1820 | ||
1821 | /* Count how many \ " ' tab space there are in the name. */ | |
1822 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1823 | { | |
1824 | parg++; | |
1825 | count++; | |
1826 | } | |
1827 | ||
1828 | if (count) | |
1829 | { | |
1830 | /* We need to quote this string so buildargv can pull it apart. */ | |
1831 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1832 | char *ptemp = temp; | |
1833 | char *prev; | |
1834 | ||
1835 | make_cleanup (xfree, temp); | |
1836 | ||
1837 | prev = parg = arg; | |
1838 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1839 | { | |
1840 | strncpy (ptemp, prev, parg - prev); | |
1841 | ptemp += parg - prev; | |
1842 | prev = parg++; | |
1843 | *ptemp++ = '\\'; | |
1844 | } | |
1845 | strcpy (ptemp, prev); | |
1846 | ||
1847 | arg = temp; | |
1848 | } | |
1849 | } | |
1850 | ||
c906108c | 1851 | target_load (arg, from_tty); |
2889e661 JB |
1852 | |
1853 | /* After re-loading the executable, we don't really know which | |
1854 | overlays are mapped any more. */ | |
1855 | overlay_cache_invalid = 1; | |
c906108c SS |
1856 | } |
1857 | ||
1858 | /* This version of "load" should be usable for any target. Currently | |
1859 | it is just used for remote targets, not inftarg.c or core files, | |
1860 | on the theory that only in that case is it useful. | |
1861 | ||
1862 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1863 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1864 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1865 | performance compares. */ | |
917317f4 | 1866 | |
917317f4 JM |
1867 | static int validate_download = 0; |
1868 | ||
e4f9b4d5 MS |
1869 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1870 | ||
1871 | static void | |
1872 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1873 | { | |
1874 | bfd_size_type *sum = data; | |
1875 | ||
2c500098 | 1876 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1877 | } |
1878 | ||
1879 | /* Opaque data for load_section_callback. */ | |
1880 | struct load_section_data { | |
1881 | unsigned long load_offset; | |
a76d924d DJ |
1882 | struct load_progress_data *progress_data; |
1883 | VEC(memory_write_request_s) *requests; | |
1884 | }; | |
1885 | ||
1886 | /* Opaque data for load_progress. */ | |
1887 | struct load_progress_data { | |
1888 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1889 | unsigned long write_count; |
1890 | unsigned long data_count; | |
1891 | bfd_size_type total_size; | |
a76d924d DJ |
1892 | }; |
1893 | ||
1894 | /* Opaque data for load_progress for a single section. */ | |
1895 | struct load_progress_section_data { | |
1896 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1897 | |
a76d924d | 1898 | /* Per-section data. */ |
cf7a04e8 DJ |
1899 | const char *section_name; |
1900 | ULONGEST section_sent; | |
1901 | ULONGEST section_size; | |
1902 | CORE_ADDR lma; | |
1903 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1904 | }; |
1905 | ||
a76d924d | 1906 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1907 | |
1908 | static void | |
1909 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1910 | { | |
a76d924d DJ |
1911 | struct load_progress_section_data *args = untyped_arg; |
1912 | struct load_progress_data *totals; | |
1913 | ||
1914 | if (args == NULL) | |
1915 | /* Writing padding data. No easy way to get at the cumulative | |
1916 | stats, so just ignore this. */ | |
1917 | return; | |
1918 | ||
1919 | totals = args->cumulative; | |
1920 | ||
1921 | if (bytes == 0 && args->section_sent == 0) | |
1922 | { | |
1923 | /* The write is just starting. Let the user know we've started | |
1924 | this section. */ | |
79a45e25 | 1925 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 UW |
1926 | args->section_name, hex_string (args->section_size), |
1927 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1928 | return; |
1929 | } | |
cf7a04e8 DJ |
1930 | |
1931 | if (validate_download) | |
1932 | { | |
1933 | /* Broken memories and broken monitors manifest themselves here | |
1934 | when bring new computers to life. This doubles already slow | |
1935 | downloads. */ | |
1936 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1937 | might add a verify_memory() method to the target vector and | |
1938 | then use that. remote.c could implement that method using | |
1939 | the ``qCRC'' packet. */ | |
1940 | gdb_byte *check = xmalloc (bytes); | |
1941 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1942 | ||
1943 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1944 | error (_("Download verify read failed at %s"), |
1945 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1946 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1947 | error (_("Download verify compare failed at %s"), |
1948 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1949 | do_cleanups (verify_cleanups); |
1950 | } | |
a76d924d | 1951 | totals->data_count += bytes; |
cf7a04e8 DJ |
1952 | args->lma += bytes; |
1953 | args->buffer += bytes; | |
a76d924d | 1954 | totals->write_count += 1; |
cf7a04e8 DJ |
1955 | args->section_sent += bytes; |
1956 | if (quit_flag | |
1957 | || (deprecated_ui_load_progress_hook != NULL | |
1958 | && deprecated_ui_load_progress_hook (args->section_name, | |
1959 | args->section_sent))) | |
1960 | error (_("Canceled the download")); | |
1961 | ||
1962 | if (deprecated_show_load_progress != NULL) | |
1963 | deprecated_show_load_progress (args->section_name, | |
1964 | args->section_sent, | |
1965 | args->section_size, | |
a76d924d DJ |
1966 | totals->data_count, |
1967 | totals->total_size); | |
cf7a04e8 DJ |
1968 | } |
1969 | ||
e4f9b4d5 MS |
1970 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1971 | ||
1972 | static void | |
1973 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1974 | { | |
a76d924d | 1975 | struct memory_write_request *new_request; |
e4f9b4d5 | 1976 | struct load_section_data *args = data; |
a76d924d | 1977 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1978 | bfd_size_type size = bfd_get_section_size (asec); |
1979 | gdb_byte *buffer; | |
cf7a04e8 | 1980 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1981 | |
cf7a04e8 DJ |
1982 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1983 | return; | |
e4f9b4d5 | 1984 | |
cf7a04e8 DJ |
1985 | if (size == 0) |
1986 | return; | |
e4f9b4d5 | 1987 | |
a76d924d DJ |
1988 | new_request = VEC_safe_push (memory_write_request_s, |
1989 | args->requests, NULL); | |
1990 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1991 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1992 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
1993 | new_request->end = new_request->begin + size; /* FIXME Should size |
1994 | be in instead? */ | |
a76d924d DJ |
1995 | new_request->data = xmalloc (size); |
1996 | new_request->baton = section_data; | |
cf7a04e8 | 1997 | |
a76d924d | 1998 | buffer = new_request->data; |
cf7a04e8 | 1999 | |
a76d924d DJ |
2000 | section_data->cumulative = args->progress_data; |
2001 | section_data->section_name = sect_name; | |
2002 | section_data->section_size = size; | |
2003 | section_data->lma = new_request->begin; | |
2004 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
2005 | |
2006 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
2007 | } |
2008 | ||
2009 | /* Clean up an entire memory request vector, including load | |
2010 | data and progress records. */ | |
cf7a04e8 | 2011 | |
a76d924d DJ |
2012 | static void |
2013 | clear_memory_write_data (void *arg) | |
2014 | { | |
2015 | VEC(memory_write_request_s) **vec_p = arg; | |
2016 | VEC(memory_write_request_s) *vec = *vec_p; | |
2017 | int i; | |
2018 | struct memory_write_request *mr; | |
cf7a04e8 | 2019 | |
a76d924d DJ |
2020 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
2021 | { | |
2022 | xfree (mr->data); | |
2023 | xfree (mr->baton); | |
2024 | } | |
2025 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
2026 | } |
2027 | ||
c906108c | 2028 | void |
917317f4 | 2029 | generic_load (char *args, int from_tty) |
c906108c | 2030 | { |
c906108c | 2031 | bfd *loadfile_bfd; |
2b71414d | 2032 | struct timeval start_time, end_time; |
917317f4 | 2033 | char *filename; |
1986bccd | 2034 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 2035 | struct load_section_data cbdata; |
a76d924d | 2036 | struct load_progress_data total_progress; |
79a45e25 | 2037 | struct ui_out *uiout = current_uiout; |
a76d924d | 2038 | |
e4f9b4d5 | 2039 | CORE_ADDR entry; |
1986bccd | 2040 | char **argv; |
e4f9b4d5 | 2041 | |
a76d924d DJ |
2042 | memset (&cbdata, 0, sizeof (cbdata)); |
2043 | memset (&total_progress, 0, sizeof (total_progress)); | |
2044 | cbdata.progress_data = &total_progress; | |
2045 | ||
2046 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 2047 | |
d1a41061 PP |
2048 | if (args == NULL) |
2049 | error_no_arg (_("file to load")); | |
1986bccd | 2050 | |
d1a41061 | 2051 | argv = gdb_buildargv (args); |
1986bccd AS |
2052 | make_cleanup_freeargv (argv); |
2053 | ||
2054 | filename = tilde_expand (argv[0]); | |
2055 | make_cleanup (xfree, filename); | |
2056 | ||
2057 | if (argv[1] != NULL) | |
917317f4 JM |
2058 | { |
2059 | char *endptr; | |
ba5f2f8a | 2060 | |
1986bccd AS |
2061 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
2062 | ||
2063 | /* If the last word was not a valid number then | |
2064 | treat it as a file name with spaces in. */ | |
2065 | if (argv[1] == endptr) | |
2066 | error (_("Invalid download offset:%s."), argv[1]); | |
2067 | ||
2068 | if (argv[2] != NULL) | |
2069 | error (_("Too many parameters.")); | |
917317f4 | 2070 | } |
c906108c | 2071 | |
c378eb4e | 2072 | /* Open the file for loading. */ |
c906108c SS |
2073 | loadfile_bfd = bfd_openr (filename, gnutarget); |
2074 | if (loadfile_bfd == NULL) | |
2075 | { | |
2076 | perror_with_name (filename); | |
2077 | return; | |
2078 | } | |
917317f4 | 2079 | |
c906108c SS |
2080 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
2081 | on error it does not free all the storage associated with the | |
2082 | bfd). */ | |
5c65bbb6 | 2083 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 2084 | |
c5aa993b | 2085 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2086 | { |
8a3fe4f8 | 2087 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2088 | bfd_errmsg (bfd_get_error ())); |
2089 | } | |
c5aa993b | 2090 | |
5417f6dc | 2091 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2092 | (void *) &total_progress.total_size); |
2093 | ||
2094 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2095 | |
2b71414d | 2096 | gettimeofday (&start_time, NULL); |
c906108c | 2097 | |
a76d924d DJ |
2098 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2099 | load_progress) != 0) | |
2100 | error (_("Load failed")); | |
c906108c | 2101 | |
2b71414d | 2102 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2103 | |
e4f9b4d5 | 2104 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2105 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2106 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2107 | ui_out_text (uiout, ", load size "); |
a76d924d | 2108 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2109 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2110 | /* We were doing this in remote-mips.c, I suspect it is right |
2111 | for other targets too. */ | |
fb14de7b | 2112 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2113 | |
38963c97 DJ |
2114 | /* Reset breakpoints, now that we have changed the load image. For |
2115 | instance, breakpoints may have been set (or reset, by | |
2116 | post_create_inferior) while connected to the target but before we | |
2117 | loaded the program. In that case, the prologue analyzer could | |
2118 | have read instructions from the target to find the right | |
2119 | breakpoint locations. Loading has changed the contents of that | |
2120 | memory. */ | |
2121 | ||
2122 | breakpoint_re_set (); | |
2123 | ||
7ca9f392 AC |
2124 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2125 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2126 | was commented out), making the call confuses GDB if more than one | |
2127 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2128 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2129 | |
a76d924d DJ |
2130 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2131 | total_progress.write_count, | |
2132 | &start_time, &end_time); | |
c906108c SS |
2133 | |
2134 | do_cleanups (old_cleanups); | |
2135 | } | |
2136 | ||
c378eb4e | 2137 | /* Report how fast the transfer went. */ |
c906108c | 2138 | |
917317f4 JM |
2139 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2140 | replaced by print_transfer_performance (with a very different | |
c378eb4e | 2141 | function signature). */ |
917317f4 | 2142 | |
c906108c | 2143 | void |
fba45db2 KB |
2144 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2145 | time_t end_time) | |
c906108c | 2146 | { |
2b71414d DJ |
2147 | struct timeval start, end; |
2148 | ||
2149 | start.tv_sec = start_time; | |
2150 | start.tv_usec = 0; | |
2151 | end.tv_sec = end_time; | |
2152 | end.tv_usec = 0; | |
2153 | ||
2154 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2155 | } |
2156 | ||
2157 | void | |
d9fcf2fb | 2158 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2159 | unsigned long data_count, |
2160 | unsigned long write_count, | |
2b71414d DJ |
2161 | const struct timeval *start_time, |
2162 | const struct timeval *end_time) | |
917317f4 | 2163 | { |
9f43d28c | 2164 | ULONGEST time_count; |
79a45e25 | 2165 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2166 | |
2167 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2168 | accuracy and overflow. */ | |
2169 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2170 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2171 | ||
8b93c638 JM |
2172 | ui_out_text (uiout, "Transfer rate: "); |
2173 | if (time_count > 0) | |
2174 | { | |
9f43d28c DJ |
2175 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2176 | ||
2177 | if (ui_out_is_mi_like_p (uiout)) | |
2178 | { | |
2179 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2180 | ui_out_text (uiout, " bits/sec"); | |
2181 | } | |
2182 | else if (rate < 1024) | |
2183 | { | |
2184 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2185 | ui_out_text (uiout, " bytes/sec"); | |
2186 | } | |
2187 | else | |
2188 | { | |
2189 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2190 | ui_out_text (uiout, " KB/sec"); | |
2191 | } | |
8b93c638 JM |
2192 | } |
2193 | else | |
2194 | { | |
ba5f2f8a | 2195 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2196 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2197 | } |
2198 | if (write_count > 0) | |
2199 | { | |
2200 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2201 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2202 | ui_out_text (uiout, " bytes/write"); |
2203 | } | |
2204 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2205 | } |
2206 | ||
2207 | /* This function allows the addition of incrementally linked object files. | |
2208 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2209 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2210 | special case syntax for the rombug target (Rombug is the boot | |
2211 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2212 | rombug case, the user doesn't need to supply a text address, | |
2213 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2214 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2215 | |
c906108c | 2216 | static void |
fba45db2 | 2217 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2218 | { |
5af949e3 | 2219 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2220 | char *filename = NULL; |
2df3850c | 2221 | int flags = OBJF_USERLOADED; |
c906108c | 2222 | char *arg; |
db162d44 | 2223 | int section_index = 0; |
2acceee2 JM |
2224 | int argcnt = 0; |
2225 | int sec_num = 0; | |
2226 | int i; | |
db162d44 EZ |
2227 | int expecting_sec_name = 0; |
2228 | int expecting_sec_addr = 0; | |
5b96932b | 2229 | char **argv; |
db162d44 | 2230 | |
a39a16c4 | 2231 | struct sect_opt |
2acceee2 | 2232 | { |
2acceee2 JM |
2233 | char *name; |
2234 | char *value; | |
a39a16c4 | 2235 | }; |
db162d44 | 2236 | |
a39a16c4 MM |
2237 | struct section_addr_info *section_addrs; |
2238 | struct sect_opt *sect_opts = NULL; | |
2239 | size_t num_sect_opts = 0; | |
3017564a | 2240 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2241 | |
a39a16c4 | 2242 | num_sect_opts = 16; |
5417f6dc | 2243 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2244 | * sizeof (struct sect_opt)); |
2245 | ||
c906108c SS |
2246 | dont_repeat (); |
2247 | ||
2248 | if (args == NULL) | |
8a3fe4f8 | 2249 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2250 | |
d1a41061 | 2251 | argv = gdb_buildargv (args); |
5b96932b | 2252 | make_cleanup_freeargv (argv); |
db162d44 | 2253 | |
5b96932b AS |
2254 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2255 | { | |
c378eb4e | 2256 | /* Process the argument. */ |
db162d44 | 2257 | if (argcnt == 0) |
c906108c | 2258 | { |
c378eb4e | 2259 | /* The first argument is the file name. */ |
db162d44 | 2260 | filename = tilde_expand (arg); |
3017564a | 2261 | make_cleanup (xfree, filename); |
c906108c | 2262 | } |
db162d44 | 2263 | else |
7a78ae4e ND |
2264 | if (argcnt == 1) |
2265 | { | |
2266 | /* The second argument is always the text address at which | |
c378eb4e | 2267 | to load the program. */ |
7a78ae4e ND |
2268 | sect_opts[section_index].name = ".text"; |
2269 | sect_opts[section_index].value = arg; | |
f414f22f | 2270 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2271 | { |
2272 | num_sect_opts *= 2; | |
5417f6dc | 2273 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2274 | xrealloc (sect_opts, |
5417f6dc | 2275 | num_sect_opts |
a39a16c4 MM |
2276 | * sizeof (struct sect_opt))); |
2277 | } | |
7a78ae4e ND |
2278 | } |
2279 | else | |
2280 | { | |
2281 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2282 | to an option. */ |
7a78ae4e ND |
2283 | |
2284 | if (*arg == '-') | |
2285 | { | |
78a4a9b9 AC |
2286 | if (strcmp (arg, "-readnow") == 0) |
2287 | flags |= OBJF_READNOW; | |
2288 | else if (strcmp (arg, "-s") == 0) | |
2289 | { | |
2290 | expecting_sec_name = 1; | |
2291 | expecting_sec_addr = 1; | |
2292 | } | |
7a78ae4e ND |
2293 | } |
2294 | else | |
2295 | { | |
2296 | if (expecting_sec_name) | |
db162d44 | 2297 | { |
7a78ae4e ND |
2298 | sect_opts[section_index].name = arg; |
2299 | expecting_sec_name = 0; | |
db162d44 EZ |
2300 | } |
2301 | else | |
7a78ae4e ND |
2302 | if (expecting_sec_addr) |
2303 | { | |
2304 | sect_opts[section_index].value = arg; | |
2305 | expecting_sec_addr = 0; | |
f414f22f | 2306 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2307 | { |
2308 | num_sect_opts *= 2; | |
5417f6dc | 2309 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2310 | xrealloc (sect_opts, |
5417f6dc | 2311 | num_sect_opts |
a39a16c4 MM |
2312 | * sizeof (struct sect_opt))); |
2313 | } | |
7a78ae4e ND |
2314 | } |
2315 | else | |
3e43a32a | 2316 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
412946b6 | 2317 | " [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2318 | } |
2319 | } | |
c906108c | 2320 | } |
c906108c | 2321 | |
927890d0 JB |
2322 | /* This command takes at least two arguments. The first one is a |
2323 | filename, and the second is the address where this file has been | |
2324 | loaded. Abort now if this address hasn't been provided by the | |
2325 | user. */ | |
2326 | if (section_index < 1) | |
2327 | error (_("The address where %s has been loaded is missing"), filename); | |
2328 | ||
c378eb4e | 2329 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2330 | a sect_addr_info structure to be passed around to other |
2331 | functions. We have to split this up into separate print | |
bb599908 | 2332 | statements because hex_string returns a local static |
c378eb4e | 2333 | string. */ |
5417f6dc | 2334 | |
a3f17187 | 2335 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2336 | section_addrs = alloc_section_addr_info (section_index); |
2337 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2338 | for (i = 0; i < section_index; i++) |
c906108c | 2339 | { |
db162d44 EZ |
2340 | CORE_ADDR addr; |
2341 | char *val = sect_opts[i].value; | |
2342 | char *sec = sect_opts[i].name; | |
5417f6dc | 2343 | |
ae822768 | 2344 | addr = parse_and_eval_address (val); |
db162d44 | 2345 | |
db162d44 | 2346 | /* Here we store the section offsets in the order they were |
c378eb4e | 2347 | entered on the command line. */ |
a39a16c4 MM |
2348 | section_addrs->other[sec_num].name = sec; |
2349 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2350 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2351 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2352 | sec_num++; |
2353 | ||
5417f6dc | 2354 | /* The object's sections are initialized when a |
db162d44 | 2355 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2356 | This happens in reread_symbols. |
db162d44 EZ |
2357 | At this point, we don't know what file type this is, |
2358 | so we can't determine what section names are valid. */ | |
2acceee2 | 2359 | } |
db162d44 | 2360 | |
2acceee2 | 2361 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2362 | error (_("Not confirmed.")); |
c906108c | 2363 | |
7eedccfa PP |
2364 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2365 | section_addrs, flags); | |
c906108c SS |
2366 | |
2367 | /* Getting new symbols may change our opinion about what is | |
2368 | frameless. */ | |
2369 | reinit_frame_cache (); | |
db162d44 | 2370 | do_cleanups (my_cleanups); |
c906108c SS |
2371 | } |
2372 | \f | |
70992597 | 2373 | |
c906108c SS |
2374 | /* Re-read symbols if a symbol-file has changed. */ |
2375 | void | |
fba45db2 | 2376 | reread_symbols (void) |
c906108c SS |
2377 | { |
2378 | struct objfile *objfile; | |
2379 | long new_modtime; | |
2380 | int reread_one = 0; | |
2381 | struct stat new_statbuf; | |
2382 | int res; | |
2383 | ||
2384 | /* With the addition of shared libraries, this should be modified, | |
2385 | the load time should be saved in the partial symbol tables, since | |
2386 | different tables may come from different source files. FIXME. | |
2387 | This routine should then walk down each partial symbol table | |
c378eb4e | 2388 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2389 | |
c5aa993b JM |
2390 | for (objfile = object_files; objfile; objfile = objfile->next) |
2391 | { | |
9cce227f TG |
2392 | /* solib-sunos.c creates one objfile with obfd. */ |
2393 | if (objfile->obfd == NULL) | |
2394 | continue; | |
2395 | ||
2396 | /* Separate debug objfiles are handled in the main objfile. */ | |
2397 | if (objfile->separate_debug_objfile_backlink) | |
2398 | continue; | |
2399 | ||
02aeec7b JB |
2400 | /* If this object is from an archive (what you usually create with |
2401 | `ar', often called a `static library' on most systems, though | |
2402 | a `shared library' on AIX is also an archive), then you should | |
2403 | stat on the archive name, not member name. */ | |
9cce227f TG |
2404 | if (objfile->obfd->my_archive) |
2405 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2406 | else | |
9cce227f TG |
2407 | res = stat (objfile->name, &new_statbuf); |
2408 | if (res != 0) | |
2409 | { | |
c378eb4e | 2410 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2411 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2412 | objfile->name); | |
2413 | continue; | |
2414 | } | |
2415 | new_modtime = new_statbuf.st_mtime; | |
2416 | if (new_modtime != objfile->mtime) | |
2417 | { | |
2418 | struct cleanup *old_cleanups; | |
2419 | struct section_offsets *offsets; | |
2420 | int num_offsets; | |
2421 | char *obfd_filename; | |
2422 | ||
2423 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2424 | objfile->name); | |
2425 | ||
2426 | /* There are various functions like symbol_file_add, | |
2427 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2428 | appear to do what we want. But they have various other | |
2429 | effects which we *don't* want. So we just do stuff | |
2430 | ourselves. We don't worry about mapped files (for one thing, | |
2431 | any mapped file will be out of date). */ | |
2432 | ||
2433 | /* If we get an error, blow away this objfile (not sure if | |
2434 | that is the correct response for things like shared | |
2435 | libraries). */ | |
2436 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2437 | /* We need to do this whenever any symbols go away. */ | |
2438 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2439 | ||
0ba1096a KT |
2440 | if (exec_bfd != NULL |
2441 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2442 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2443 | { |
2444 | /* Reload EXEC_BFD without asking anything. */ | |
2445 | ||
2446 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2447 | } | |
2448 | ||
2449 | /* Clean up any state BFD has sitting around. We don't need | |
2450 | to close the descriptor but BFD lacks a way of closing the | |
2451 | BFD without closing the descriptor. */ | |
2452 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2453 | if (!bfd_close (objfile->obfd)) | |
2454 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2455 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2456 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2457 | if (objfile->obfd == NULL) |
2458 | error (_("Can't open %s to read symbols."), objfile->name); | |
2459 | else | |
2460 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2461 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2462 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2463 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2464 | bfd_errmsg (bfd_get_error ())); | |
2465 | ||
2466 | /* Save the offsets, we will nuke them with the rest of the | |
2467 | objfile_obstack. */ | |
2468 | num_offsets = objfile->num_sections; | |
2469 | offsets = ((struct section_offsets *) | |
2470 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2471 | memcpy (offsets, objfile->section_offsets, | |
2472 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2473 | ||
2474 | /* Remove any references to this objfile in the global | |
2475 | value lists. */ | |
2476 | preserve_values (objfile); | |
2477 | ||
2478 | /* Nuke all the state that we will re-read. Much of the following | |
2479 | code which sets things to NULL really is necessary to tell | |
2480 | other parts of GDB that there is nothing currently there. | |
2481 | ||
2482 | Try to keep the freeing order compatible with free_objfile. */ | |
2483 | ||
2484 | if (objfile->sf != NULL) | |
2485 | { | |
2486 | (*objfile->sf->sym_finish) (objfile); | |
2487 | } | |
2488 | ||
2489 | clear_objfile_data (objfile); | |
2490 | ||
15d123c9 | 2491 | /* Free the separate debug objfiles. It will be |
9cce227f | 2492 | automatically recreated by sym_read. */ |
15d123c9 | 2493 | free_objfile_separate_debug (objfile); |
9cce227f TG |
2494 | |
2495 | /* FIXME: Do we have to free a whole linked list, or is this | |
2496 | enough? */ | |
2497 | if (objfile->global_psymbols.list) | |
2498 | xfree (objfile->global_psymbols.list); | |
2499 | memset (&objfile->global_psymbols, 0, | |
2500 | sizeof (objfile->global_psymbols)); | |
2501 | if (objfile->static_psymbols.list) | |
2502 | xfree (objfile->static_psymbols.list); | |
2503 | memset (&objfile->static_psymbols, 0, | |
2504 | sizeof (objfile->static_psymbols)); | |
2505 | ||
c378eb4e | 2506 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2507 | psymbol_bcache_free (objfile->psymbol_cache); |
2508 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f | 2509 | bcache_xfree (objfile->macro_cache); |
cbd70537 | 2510 | objfile->macro_cache = bcache_xmalloc (NULL, NULL); |
9cce227f | 2511 | bcache_xfree (objfile->filename_cache); |
cbd70537 | 2512 | objfile->filename_cache = bcache_xmalloc (NULL,NULL); |
9cce227f TG |
2513 | if (objfile->demangled_names_hash != NULL) |
2514 | { | |
2515 | htab_delete (objfile->demangled_names_hash); | |
2516 | objfile->demangled_names_hash = NULL; | |
2517 | } | |
2518 | obstack_free (&objfile->objfile_obstack, 0); | |
2519 | objfile->sections = NULL; | |
2520 | objfile->symtabs = NULL; | |
2521 | objfile->psymtabs = NULL; | |
2522 | objfile->psymtabs_addrmap = NULL; | |
2523 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2524 | objfile->template_symbols = NULL; |
9cce227f TG |
2525 | objfile->msymbols = NULL; |
2526 | objfile->deprecated_sym_private = NULL; | |
2527 | objfile->minimal_symbol_count = 0; | |
2528 | memset (&objfile->msymbol_hash, 0, | |
2529 | sizeof (objfile->msymbol_hash)); | |
2530 | memset (&objfile->msymbol_demangled_hash, 0, | |
2531 | sizeof (objfile->msymbol_demangled_hash)); | |
2532 | ||
9cce227f TG |
2533 | /* obstack_init also initializes the obstack so it is |
2534 | empty. We could use obstack_specify_allocation but | |
2535 | gdb_obstack.h specifies the alloc/dealloc | |
2536 | functions. */ | |
2537 | obstack_init (&objfile->objfile_obstack); | |
2538 | if (build_objfile_section_table (objfile)) | |
2539 | { | |
2540 | error (_("Can't find the file sections in `%s': %s"), | |
2541 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2542 | } | |
2543 | terminate_minimal_symbol_table (objfile); | |
2544 | ||
2545 | /* We use the same section offsets as from last time. I'm not | |
2546 | sure whether that is always correct for shared libraries. */ | |
2547 | objfile->section_offsets = (struct section_offsets *) | |
2548 | obstack_alloc (&objfile->objfile_obstack, | |
2549 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2550 | memcpy (objfile->section_offsets, offsets, | |
2551 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2552 | objfile->num_sections = num_offsets; | |
2553 | ||
2554 | /* What the hell is sym_new_init for, anyway? The concept of | |
2555 | distinguishing between the main file and additional files | |
2556 | in this way seems rather dubious. */ | |
2557 | if (objfile == symfile_objfile) | |
c906108c | 2558 | { |
9cce227f | 2559 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2560 | } |
9cce227f TG |
2561 | |
2562 | (*objfile->sf->sym_init) (objfile); | |
2563 | clear_complaints (&symfile_complaints, 1, 1); | |
2564 | /* Do not set flags as this is safe and we don't want to be | |
2565 | verbose. */ | |
2566 | (*objfile->sf->sym_read) (objfile, 0); | |
b11896a5 TT |
2567 | if ((objfile->flags & OBJF_PSYMTABS_READ) != 0) |
2568 | { | |
2569 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2570 | require_partial_symbols (objfile, 0); | |
2571 | } | |
2572 | ||
9cce227f | 2573 | if (!objfile_has_symbols (objfile)) |
c906108c | 2574 | { |
9cce227f TG |
2575 | wrap_here (""); |
2576 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2577 | wrap_here (""); | |
c5aa993b | 2578 | } |
9cce227f TG |
2579 | |
2580 | /* We're done reading the symbol file; finish off complaints. */ | |
2581 | clear_complaints (&symfile_complaints, 0, 1); | |
2582 | ||
2583 | /* Getting new symbols may change our opinion about what is | |
2584 | frameless. */ | |
2585 | ||
2586 | reinit_frame_cache (); | |
2587 | ||
2588 | /* Discard cleanups as symbol reading was successful. */ | |
2589 | discard_cleanups (old_cleanups); | |
2590 | ||
2591 | /* If the mtime has changed between the time we set new_modtime | |
2592 | and now, we *want* this to be out of date, so don't call stat | |
2593 | again now. */ | |
2594 | objfile->mtime = new_modtime; | |
2595 | reread_one = 1; | |
2596 | init_entry_point_info (objfile); | |
c906108c SS |
2597 | } |
2598 | } | |
c906108c SS |
2599 | |
2600 | if (reread_one) | |
ea53e89f | 2601 | { |
ff3536bc UW |
2602 | /* Notify objfiles that we've modified objfile sections. */ |
2603 | objfiles_changed (); | |
2604 | ||
c1e56572 | 2605 | clear_symtab_users (0); |
ea53e89f JB |
2606 | /* At least one objfile has changed, so we can consider that |
2607 | the executable we're debugging has changed too. */ | |
781b42b0 | 2608 | observer_notify_executable_changed (); |
ea53e89f | 2609 | } |
c906108c | 2610 | } |
c906108c SS |
2611 | \f |
2612 | ||
c5aa993b JM |
2613 | |
2614 | typedef struct | |
2615 | { | |
2616 | char *ext; | |
c906108c | 2617 | enum language lang; |
c5aa993b JM |
2618 | } |
2619 | filename_language; | |
c906108c | 2620 | |
c5aa993b | 2621 | static filename_language *filename_language_table; |
c906108c SS |
2622 | static int fl_table_size, fl_table_next; |
2623 | ||
2624 | static void | |
fba45db2 | 2625 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2626 | { |
2627 | if (fl_table_next >= fl_table_size) | |
2628 | { | |
2629 | fl_table_size += 10; | |
5417f6dc | 2630 | filename_language_table = |
25bf3106 PM |
2631 | xrealloc (filename_language_table, |
2632 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2633 | } |
2634 | ||
4fcf66da | 2635 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2636 | filename_language_table[fl_table_next].lang = lang; |
2637 | fl_table_next++; | |
2638 | } | |
2639 | ||
2640 | static char *ext_args; | |
920d2a44 AC |
2641 | static void |
2642 | show_ext_args (struct ui_file *file, int from_tty, | |
2643 | struct cmd_list_element *c, const char *value) | |
2644 | { | |
3e43a32a MS |
2645 | fprintf_filtered (file, |
2646 | _("Mapping between filename extension " | |
2647 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2648 | value); |
2649 | } | |
c906108c SS |
2650 | |
2651 | static void | |
26c41df3 | 2652 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2653 | { |
2654 | int i; | |
2655 | char *cp = ext_args; | |
2656 | enum language lang; | |
2657 | ||
c378eb4e | 2658 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2659 | if (*cp != '.') |
8a3fe4f8 | 2660 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2661 | |
2662 | /* Find end of first arg. */ | |
c5aa993b | 2663 | while (*cp && !isspace (*cp)) |
c906108c SS |
2664 | cp++; |
2665 | ||
2666 | if (*cp == '\0') | |
3e43a32a MS |
2667 | error (_("'%s': two arguments required -- " |
2668 | "filename extension and language"), | |
c906108c SS |
2669 | ext_args); |
2670 | ||
c378eb4e | 2671 | /* Null-terminate first arg. */ |
c5aa993b | 2672 | *cp++ = '\0'; |
c906108c SS |
2673 | |
2674 | /* Find beginning of second arg, which should be a source language. */ | |
2675 | while (*cp && isspace (*cp)) | |
2676 | cp++; | |
2677 | ||
2678 | if (*cp == '\0') | |
3e43a32a MS |
2679 | error (_("'%s': two arguments required -- " |
2680 | "filename extension and language"), | |
c906108c SS |
2681 | ext_args); |
2682 | ||
2683 | /* Lookup the language from among those we know. */ | |
2684 | lang = language_enum (cp); | |
2685 | ||
2686 | /* Now lookup the filename extension: do we already know it? */ | |
2687 | for (i = 0; i < fl_table_next; i++) | |
2688 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2689 | break; | |
2690 | ||
2691 | if (i >= fl_table_next) | |
2692 | { | |
c378eb4e | 2693 | /* New file extension. */ |
c906108c SS |
2694 | add_filename_language (ext_args, lang); |
2695 | } | |
2696 | else | |
2697 | { | |
c378eb4e | 2698 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2699 | |
2700 | /* if (from_tty) */ | |
2701 | /* query ("Really make files of type %s '%s'?", */ | |
2702 | /* ext_args, language_str (lang)); */ | |
2703 | ||
b8c9b27d | 2704 | xfree (filename_language_table[i].ext); |
4fcf66da | 2705 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2706 | filename_language_table[i].lang = lang; |
2707 | } | |
2708 | } | |
2709 | ||
2710 | static void | |
fba45db2 | 2711 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2712 | { |
2713 | int i; | |
2714 | ||
a3f17187 | 2715 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2716 | printf_filtered ("\n\n"); |
2717 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2718 | printf_filtered ("\t%s\t- %s\n", |
2719 | filename_language_table[i].ext, | |
c906108c SS |
2720 | language_str (filename_language_table[i].lang)); |
2721 | } | |
2722 | ||
2723 | static void | |
fba45db2 | 2724 | init_filename_language_table (void) |
c906108c | 2725 | { |
c378eb4e | 2726 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2727 | { |
2728 | fl_table_size = 20; | |
2729 | fl_table_next = 0; | |
c5aa993b | 2730 | filename_language_table = |
c906108c | 2731 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2732 | add_filename_language (".c", language_c); |
6aecb9c2 | 2733 | add_filename_language (".d", language_d); |
c5aa993b JM |
2734 | add_filename_language (".C", language_cplus); |
2735 | add_filename_language (".cc", language_cplus); | |
2736 | add_filename_language (".cp", language_cplus); | |
2737 | add_filename_language (".cpp", language_cplus); | |
2738 | add_filename_language (".cxx", language_cplus); | |
2739 | add_filename_language (".c++", language_cplus); | |
2740 | add_filename_language (".java", language_java); | |
c906108c | 2741 | add_filename_language (".class", language_java); |
da2cf7e0 | 2742 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2743 | add_filename_language (".f", language_fortran); |
2744 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2745 | add_filename_language (".for", language_fortran); |
2746 | add_filename_language (".FOR", language_fortran); | |
2747 | add_filename_language (".ftn", language_fortran); | |
2748 | add_filename_language (".FTN", language_fortran); | |
2749 | add_filename_language (".fpp", language_fortran); | |
2750 | add_filename_language (".FPP", language_fortran); | |
2751 | add_filename_language (".f90", language_fortran); | |
2752 | add_filename_language (".F90", language_fortran); | |
2753 | add_filename_language (".f95", language_fortran); | |
2754 | add_filename_language (".F95", language_fortran); | |
2755 | add_filename_language (".f03", language_fortran); | |
2756 | add_filename_language (".F03", language_fortran); | |
2757 | add_filename_language (".f08", language_fortran); | |
2758 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2759 | add_filename_language (".s", language_asm); |
aa707ed0 | 2760 | add_filename_language (".sx", language_asm); |
c5aa993b | 2761 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2762 | add_filename_language (".pas", language_pascal); |
2763 | add_filename_language (".p", language_pascal); | |
2764 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2765 | add_filename_language (".adb", language_ada); |
2766 | add_filename_language (".ads", language_ada); | |
2767 | add_filename_language (".a", language_ada); | |
2768 | add_filename_language (".ada", language_ada); | |
dde59185 | 2769 | add_filename_language (".dg", language_ada); |
c906108c SS |
2770 | } |
2771 | } | |
2772 | ||
2773 | enum language | |
dd786858 | 2774 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2775 | { |
2776 | int i; | |
2777 | char *cp; | |
2778 | ||
2779 | if (filename != NULL) | |
2780 | if ((cp = strrchr (filename, '.')) != NULL) | |
2781 | for (i = 0; i < fl_table_next; i++) | |
2782 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2783 | return filename_language_table[i].lang; | |
2784 | ||
2785 | return language_unknown; | |
2786 | } | |
2787 | \f | |
2788 | /* allocate_symtab: | |
2789 | ||
2790 | Allocate and partly initialize a new symbol table. Return a pointer | |
2791 | to it. error() if no space. | |
2792 | ||
2793 | Caller must set these fields: | |
c5aa993b JM |
2794 | LINETABLE(symtab) |
2795 | symtab->blockvector | |
2796 | symtab->dirname | |
2797 | symtab->free_code | |
2798 | symtab->free_ptr | |
c906108c SS |
2799 | */ |
2800 | ||
2801 | struct symtab * | |
72b9f47f | 2802 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2803 | { |
52f0bd74 | 2804 | struct symtab *symtab; |
c906108c SS |
2805 | |
2806 | symtab = (struct symtab *) | |
4a146b47 | 2807 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2808 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2809 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2810 | objfile->filename_cache); | |
c5aa993b JM |
2811 | symtab->fullname = NULL; |
2812 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2813 | symtab->debugformat = "unknown"; |
c906108c | 2814 | |
c378eb4e | 2815 | /* Hook it to the objfile it comes from. */ |
c906108c | 2816 | |
c5aa993b JM |
2817 | symtab->objfile = objfile; |
2818 | symtab->next = objfile->symtabs; | |
2819 | objfile->symtabs = symtab; | |
c906108c | 2820 | |
c906108c SS |
2821 | return (symtab); |
2822 | } | |
c906108c | 2823 | \f |
c5aa993b | 2824 | |
c906108c | 2825 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2826 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2827 | |
2828 | void | |
c1e56572 | 2829 | clear_symtab_users (int add_flags) |
c906108c SS |
2830 | { |
2831 | /* Someday, we should do better than this, by only blowing away | |
2832 | the things that really need to be blown. */ | |
c0501be5 DJ |
2833 | |
2834 | /* Clear the "current" symtab first, because it is no longer valid. | |
2835 | breakpoint_re_set may try to access the current symtab. */ | |
2836 | clear_current_source_symtab_and_line (); | |
2837 | ||
c906108c | 2838 | clear_displays (); |
c1e56572 JK |
2839 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2840 | breakpoint_re_set (); | |
1bfeeb0f | 2841 | clear_last_displayed_sal (); |
c906108c | 2842 | clear_pc_function_cache (); |
06d3b283 | 2843 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2844 | |
2845 | /* Clear globals which might have pointed into a removed objfile. | |
2846 | FIXME: It's not clear which of these are supposed to persist | |
2847 | between expressions and which ought to be reset each time. */ | |
2848 | expression_context_block = NULL; | |
2849 | innermost_block = NULL; | |
8756216b DP |
2850 | |
2851 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2852 | varobj_invalidate (); | |
2853 | ||
c906108c SS |
2854 | } |
2855 | ||
74b7792f AC |
2856 | static void |
2857 | clear_symtab_users_cleanup (void *ignore) | |
2858 | { | |
c1e56572 | 2859 | clear_symtab_users (0); |
74b7792f | 2860 | } |
c906108c | 2861 | \f |
c906108c SS |
2862 | /* OVERLAYS: |
2863 | The following code implements an abstraction for debugging overlay sections. | |
2864 | ||
2865 | The target model is as follows: | |
2866 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2867 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2868 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2869 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2870 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2871 | sections should be considered to be mapped from the VMA to the LMA. |
2872 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2873 | For instance, if a section has been mapped then its contents |
c5aa993b | 2874 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2875 | |
2876 | Two levels of debugger support for overlays are available. One is | |
2877 | "manual", in which the debugger relies on the user to tell it which | |
2878 | overlays are currently mapped. This level of support is | |
2879 | implemented entirely in the core debugger, and the information about | |
2880 | whether a section is mapped is kept in the objfile->obj_section table. | |
2881 | ||
2882 | The second level of support is "automatic", and is only available if | |
2883 | the target-specific code provides functionality to read the target's | |
2884 | overlay mapping table, and translate its contents for the debugger | |
2885 | (by updating the mapped state information in the obj_section tables). | |
2886 | ||
2887 | The interface is as follows: | |
c5aa993b JM |
2888 | User commands: |
2889 | overlay map <name> -- tell gdb to consider this section mapped | |
2890 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2891 | overlay list -- list the sections that GDB thinks are mapped | |
2892 | overlay read-target -- get the target's state of what's mapped | |
2893 | overlay off/manual/auto -- set overlay debugging state | |
2894 | Functional interface: | |
2895 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2896 | section, return that section. | |
5417f6dc | 2897 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2898 | the pc, either in its VMA or its LMA |
714835d5 | 2899 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2900 | section_is_overlay(sect): true if section's VMA != LMA |
2901 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2902 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2903 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2904 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2905 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2906 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2907 | either in VMA or LMA depending on whether | |
c378eb4e | 2908 | the symbol's section is currently mapped. */ |
c906108c SS |
2909 | |
2910 | /* Overlay debugging state: */ | |
2911 | ||
d874f1e2 | 2912 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2913 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2914 | |
c906108c | 2915 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2916 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2917 | SECTION is loaded at an address different from where it will "run". */ |
2918 | ||
2919 | int | |
714835d5 | 2920 | section_is_overlay (struct obj_section *section) |
c906108c | 2921 | { |
714835d5 UW |
2922 | if (overlay_debugging && section) |
2923 | { | |
2924 | bfd *abfd = section->objfile->obfd; | |
2925 | asection *bfd_section = section->the_bfd_section; | |
2926 | ||
2927 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
2928 | && bfd_section_lma (abfd, bfd_section) | |
2929 | != bfd_section_vma (abfd, bfd_section)) | |
2930 | return 1; | |
2931 | } | |
c906108c SS |
2932 | |
2933 | return 0; | |
2934 | } | |
2935 | ||
2936 | /* Function: overlay_invalidate_all (void) | |
2937 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2938 | ||
2939 | static void | |
fba45db2 | 2940 | overlay_invalidate_all (void) |
c906108c | 2941 | { |
c5aa993b | 2942 | struct objfile *objfile; |
c906108c SS |
2943 | struct obj_section *sect; |
2944 | ||
2945 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2946 | if (section_is_overlay (sect)) |
2947 | sect->ovly_mapped = -1; | |
c906108c SS |
2948 | } |
2949 | ||
714835d5 | 2950 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2951 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2952 | |
2953 | Access to the ovly_mapped flag is restricted to this function, so | |
2954 | that we can do automatic update. If the global flag | |
2955 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2956 | overlay_invalidate_all. If the mapped state of the particular | |
2957 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2958 | ||
714835d5 UW |
2959 | int |
2960 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2961 | { |
9216df95 UW |
2962 | struct gdbarch *gdbarch; |
2963 | ||
714835d5 | 2964 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2965 | return 0; |
2966 | ||
c5aa993b | 2967 | switch (overlay_debugging) |
c906108c SS |
2968 | { |
2969 | default: | |
d874f1e2 | 2970 | case ovly_off: |
c5aa993b | 2971 | return 0; /* overlay debugging off */ |
d874f1e2 | 2972 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2973 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 2974 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
2975 | gdbarch = get_objfile_arch (osect->objfile); |
2976 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
2977 | { |
2978 | if (overlay_cache_invalid) | |
2979 | { | |
2980 | overlay_invalidate_all (); | |
2981 | overlay_cache_invalid = 0; | |
2982 | } | |
2983 | if (osect->ovly_mapped == -1) | |
9216df95 | 2984 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
2985 | } |
2986 | /* fall thru to manual case */ | |
d874f1e2 | 2987 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2988 | return osect->ovly_mapped == 1; |
2989 | } | |
2990 | } | |
2991 | ||
c906108c SS |
2992 | /* Function: pc_in_unmapped_range |
2993 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2994 | ||
2995 | CORE_ADDR | |
714835d5 | 2996 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2997 | { |
714835d5 UW |
2998 | if (section_is_overlay (section)) |
2999 | { | |
3000 | bfd *abfd = section->objfile->obfd; | |
3001 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3002 | |
714835d5 UW |
3003 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3004 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3005 | CORE_ADDR offset = obj_section_offset (section); | |
3006 | ||
3007 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3008 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3009 | return 1; | |
3010 | } | |
c906108c | 3011 | |
c906108c SS |
3012 | return 0; |
3013 | } | |
3014 | ||
3015 | /* Function: pc_in_mapped_range | |
3016 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3017 | ||
3018 | CORE_ADDR | |
714835d5 | 3019 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3020 | { |
714835d5 UW |
3021 | if (section_is_overlay (section)) |
3022 | { | |
3023 | if (obj_section_addr (section) <= pc | |
3024 | && pc < obj_section_endaddr (section)) | |
3025 | return 1; | |
3026 | } | |
c906108c | 3027 | |
c906108c SS |
3028 | return 0; |
3029 | } | |
3030 | ||
9ec8e6a0 JB |
3031 | |
3032 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3033 | otherwise. */ | |
b9362cc7 | 3034 | static int |
714835d5 | 3035 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3036 | { |
714835d5 UW |
3037 | CORE_ADDR a_start = obj_section_addr (a); |
3038 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3039 | CORE_ADDR b_start = obj_section_addr (b); | |
3040 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3041 | |
3042 | return (a_start < b_end && b_start < a_end); | |
3043 | } | |
3044 | ||
c906108c SS |
3045 | /* Function: overlay_unmapped_address (PC, SECTION) |
3046 | Returns the address corresponding to PC in the unmapped (load) range. | |
3047 | May be the same as PC. */ | |
3048 | ||
3049 | CORE_ADDR | |
714835d5 | 3050 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3051 | { |
714835d5 UW |
3052 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3053 | { | |
3054 | bfd *abfd = section->objfile->obfd; | |
3055 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3056 | |
714835d5 UW |
3057 | return pc + bfd_section_lma (abfd, bfd_section) |
3058 | - bfd_section_vma (abfd, bfd_section); | |
3059 | } | |
c906108c SS |
3060 | |
3061 | return pc; | |
3062 | } | |
3063 | ||
3064 | /* Function: overlay_mapped_address (PC, SECTION) | |
3065 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3066 | May be the same as PC. */ | |
3067 | ||
3068 | CORE_ADDR | |
714835d5 | 3069 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3070 | { |
714835d5 UW |
3071 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3072 | { | |
3073 | bfd *abfd = section->objfile->obfd; | |
3074 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3075 | |
714835d5 UW |
3076 | return pc + bfd_section_vma (abfd, bfd_section) |
3077 | - bfd_section_lma (abfd, bfd_section); | |
3078 | } | |
c906108c SS |
3079 | |
3080 | return pc; | |
3081 | } | |
3082 | ||
3083 | ||
5417f6dc | 3084 | /* Function: symbol_overlayed_address |
c906108c SS |
3085 | Return one of two addresses (relative to the VMA or to the LMA), |
3086 | depending on whether the section is mapped or not. */ | |
3087 | ||
c5aa993b | 3088 | CORE_ADDR |
714835d5 | 3089 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3090 | { |
3091 | if (overlay_debugging) | |
3092 | { | |
c378eb4e | 3093 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3094 | if (section == 0) |
3095 | return address; | |
c378eb4e MS |
3096 | /* If the symbol's section is not an overlay, just return its |
3097 | address. */ | |
c906108c SS |
3098 | if (!section_is_overlay (section)) |
3099 | return address; | |
c378eb4e | 3100 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3101 | if (section_is_mapped (section)) |
3102 | return address; | |
3103 | /* | |
3104 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3105 | * then return its LOADED address rather than its vma address!! | |
3106 | */ | |
3107 | return overlay_unmapped_address (address, section); | |
3108 | } | |
3109 | return address; | |
3110 | } | |
3111 | ||
5417f6dc | 3112 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3113 | Return the best-match overlay section for PC: |
3114 | If PC matches a mapped overlay section's VMA, return that section. | |
3115 | Else if PC matches an unmapped section's VMA, return that section. | |
3116 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3117 | ||
714835d5 | 3118 | struct obj_section * |
fba45db2 | 3119 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3120 | { |
c5aa993b | 3121 | struct objfile *objfile; |
c906108c SS |
3122 | struct obj_section *osect, *best_match = NULL; |
3123 | ||
3124 | if (overlay_debugging) | |
3125 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3126 | if (section_is_overlay (osect)) |
c5aa993b | 3127 | { |
714835d5 | 3128 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3129 | { |
714835d5 UW |
3130 | if (section_is_mapped (osect)) |
3131 | return osect; | |
c5aa993b JM |
3132 | else |
3133 | best_match = osect; | |
3134 | } | |
714835d5 | 3135 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3136 | best_match = osect; |
3137 | } | |
714835d5 | 3138 | return best_match; |
c906108c SS |
3139 | } |
3140 | ||
3141 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3142 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3143 | currently marked as MAPPED, return that section. Else return NULL. */ |
3144 | ||
714835d5 | 3145 | struct obj_section * |
fba45db2 | 3146 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3147 | { |
c5aa993b | 3148 | struct objfile *objfile; |
c906108c SS |
3149 | struct obj_section *osect; |
3150 | ||
3151 | if (overlay_debugging) | |
3152 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3153 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3154 | return osect; | |
c906108c SS |
3155 | |
3156 | return NULL; | |
3157 | } | |
3158 | ||
3159 | /* Function: list_overlays_command | |
c378eb4e | 3160 | Print a list of mapped sections and their PC ranges. */ |
c906108c SS |
3161 | |
3162 | void | |
fba45db2 | 3163 | list_overlays_command (char *args, int from_tty) |
c906108c | 3164 | { |
c5aa993b JM |
3165 | int nmapped = 0; |
3166 | struct objfile *objfile; | |
c906108c SS |
3167 | struct obj_section *osect; |
3168 | ||
3169 | if (overlay_debugging) | |
3170 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3171 | if (section_is_mapped (osect)) |
c5aa993b | 3172 | { |
5af949e3 | 3173 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3174 | const char *name; |
3175 | bfd_vma lma, vma; | |
3176 | int size; | |
3177 | ||
3178 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3179 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3180 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3181 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3182 | ||
3183 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3184 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3185 | puts_filtered (" - "); |
5af949e3 | 3186 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3187 | printf_filtered (", mapped at "); |
5af949e3 | 3188 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3189 | puts_filtered (" - "); |
5af949e3 | 3190 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3191 | puts_filtered ("\n"); |
3192 | ||
3193 | nmapped++; | |
3194 | } | |
c906108c | 3195 | if (nmapped == 0) |
a3f17187 | 3196 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3197 | } |
3198 | ||
3199 | /* Function: map_overlay_command | |
3200 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3201 | ||
3202 | void | |
fba45db2 | 3203 | map_overlay_command (char *args, int from_tty) |
c906108c | 3204 | { |
c5aa993b JM |
3205 | struct objfile *objfile, *objfile2; |
3206 | struct obj_section *sec, *sec2; | |
c906108c SS |
3207 | |
3208 | if (!overlay_debugging) | |
3e43a32a MS |
3209 | error (_("Overlay debugging not enabled. Use " |
3210 | "either the 'overlay auto' or\n" | |
3211 | "the 'overlay manual' command.")); | |
c906108c SS |
3212 | |
3213 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3214 | error (_("Argument required: name of an overlay section")); |
c906108c | 3215 | |
c378eb4e | 3216 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3217 | ALL_OBJSECTIONS (objfile, sec) |
3218 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3219 | { |
c378eb4e | 3220 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3221 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3222 | continue; /* not an overlay section */ |
3223 | ||
c378eb4e | 3224 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3225 | sec->ovly_mapped = 1; |
3226 | ||
3227 | /* Next, make a pass and unmap any sections that are | |
3228 | overlapped by this new section: */ | |
3229 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3230 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3231 | { |
3232 | if (info_verbose) | |
a3f17187 | 3233 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3234 | bfd_section_name (objfile->obfd, |
3235 | sec2->the_bfd_section)); | |
c378eb4e | 3236 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3237 | } |
3238 | return; | |
3239 | } | |
8a3fe4f8 | 3240 | error (_("No overlay section called %s"), args); |
c906108c SS |
3241 | } |
3242 | ||
3243 | /* Function: unmap_overlay_command | |
5417f6dc | 3244 | Mark the overlay section as unmapped |
c906108c SS |
3245 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3246 | ||
3247 | void | |
fba45db2 | 3248 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3249 | { |
c5aa993b | 3250 | struct objfile *objfile; |
c906108c SS |
3251 | struct obj_section *sec; |
3252 | ||
3253 | if (!overlay_debugging) | |
3e43a32a MS |
3254 | error (_("Overlay debugging not enabled. " |
3255 | "Use either the 'overlay auto' or\n" | |
3256 | "the 'overlay manual' command.")); | |
c906108c SS |
3257 | |
3258 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3259 | error (_("Argument required: name of an overlay section")); |
c906108c | 3260 | |
c378eb4e | 3261 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3262 | ALL_OBJSECTIONS (objfile, sec) |
3263 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3264 | { |
3265 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3266 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3267 | sec->ovly_mapped = 0; |
3268 | return; | |
3269 | } | |
8a3fe4f8 | 3270 | error (_("No overlay section called %s"), args); |
c906108c SS |
3271 | } |
3272 | ||
3273 | /* Function: overlay_auto_command | |
3274 | A utility command to turn on overlay debugging. | |
c378eb4e | 3275 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3276 | |
3277 | static void | |
fba45db2 | 3278 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3279 | { |
d874f1e2 | 3280 | overlay_debugging = ovly_auto; |
1900040c | 3281 | enable_overlay_breakpoints (); |
c906108c | 3282 | if (info_verbose) |
a3f17187 | 3283 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3284 | } |
3285 | ||
3286 | /* Function: overlay_manual_command | |
3287 | A utility command to turn on overlay debugging. | |
c378eb4e | 3288 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3289 | |
3290 | static void | |
fba45db2 | 3291 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3292 | { |
d874f1e2 | 3293 | overlay_debugging = ovly_on; |
1900040c | 3294 | disable_overlay_breakpoints (); |
c906108c | 3295 | if (info_verbose) |
a3f17187 | 3296 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3297 | } |
3298 | ||
3299 | /* Function: overlay_off_command | |
3300 | A utility command to turn on overlay debugging. | |
c378eb4e | 3301 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3302 | |
3303 | static void | |
fba45db2 | 3304 | overlay_off_command (char *args, int from_tty) |
c906108c | 3305 | { |
d874f1e2 | 3306 | overlay_debugging = ovly_off; |
1900040c | 3307 | disable_overlay_breakpoints (); |
c906108c | 3308 | if (info_verbose) |
a3f17187 | 3309 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3310 | } |
3311 | ||
3312 | static void | |
fba45db2 | 3313 | overlay_load_command (char *args, int from_tty) |
c906108c | 3314 | { |
e17c207e UW |
3315 | struct gdbarch *gdbarch = get_current_arch (); |
3316 | ||
3317 | if (gdbarch_overlay_update_p (gdbarch)) | |
3318 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3319 | else |
8a3fe4f8 | 3320 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3321 | } |
3322 | ||
3323 | /* Function: overlay_command | |
c378eb4e | 3324 | A place-holder for a mis-typed command. */ |
c906108c | 3325 | |
c378eb4e | 3326 | /* Command list chain containing all defined "overlay" subcommands. */ |
c906108c SS |
3327 | struct cmd_list_element *overlaylist; |
3328 | ||
3329 | static void | |
fba45db2 | 3330 | overlay_command (char *args, int from_tty) |
c906108c | 3331 | { |
c5aa993b | 3332 | printf_unfiltered |
c906108c SS |
3333 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3334 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3335 | } | |
3336 | ||
3337 | ||
3338 | /* Target Overlays for the "Simplest" overlay manager: | |
3339 | ||
5417f6dc RM |
3340 | This is GDB's default target overlay layer. It works with the |
3341 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3342 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3343 | so targets that use a different runtime overlay manager can |
c906108c SS |
3344 | substitute their own overlay_update function and take over the |
3345 | function pointer. | |
3346 | ||
3347 | The overlay_update function pokes around in the target's data structures | |
3348 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3349 | this information. | |
3350 | ||
3351 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3352 | unsigned _novlys; /# number of overlay sections #/ |
3353 | unsigned _ovly_table[_novlys][4] = { | |
3354 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3355 | {..., ..., ..., ...}, | |
3356 | } | |
3357 | unsigned _novly_regions; /# number of overlay regions #/ | |
3358 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3359 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3360 | {..., ..., ...}, | |
3361 | } | |
c906108c SS |
3362 | These functions will attempt to update GDB's mappedness state in the |
3363 | symbol section table, based on the target's mappedness state. | |
3364 | ||
3365 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3366 | attempt to detect when the cached copy is invalidated. The main | |
3367 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3368 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3369 | the target (whenever possible). */ |
c906108c SS |
3370 | |
3371 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3372 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3373 | static unsigned cache_novlys = 0; |
c906108c | 3374 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3375 | enum ovly_index |
3376 | { | |
3377 | VMA, SIZE, LMA, MAPPED | |
3378 | }; | |
c906108c | 3379 | |
c378eb4e | 3380 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3381 | static void |
fba45db2 | 3382 | simple_free_overlay_table (void) |
c906108c SS |
3383 | { |
3384 | if (cache_ovly_table) | |
b8c9b27d | 3385 | xfree (cache_ovly_table); |
c5aa993b | 3386 | cache_novlys = 0; |
c906108c SS |
3387 | cache_ovly_table = NULL; |
3388 | cache_ovly_table_base = 0; | |
3389 | } | |
3390 | ||
9216df95 | 3391 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3392 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3393 | static void |
9216df95 | 3394 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3395 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3396 | { |
c378eb4e | 3397 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3398 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3399 | int i; |
c906108c | 3400 | |
9216df95 | 3401 | read_memory (memaddr, buf, len * size); |
c906108c | 3402 | for (i = 0; i < len; i++) |
e17a4113 | 3403 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3404 | } |
3405 | ||
3406 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3407 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3408 | static int |
fba45db2 | 3409 | simple_read_overlay_table (void) |
c906108c | 3410 | { |
0d43edd1 | 3411 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3412 | struct gdbarch *gdbarch; |
3413 | int word_size; | |
e17a4113 | 3414 | enum bfd_endian byte_order; |
c906108c SS |
3415 | |
3416 | simple_free_overlay_table (); | |
9b27852e | 3417 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3418 | if (! novlys_msym) |
c906108c | 3419 | { |
8a3fe4f8 | 3420 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3421 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3422 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3423 | return 0; |
c906108c | 3424 | } |
0d43edd1 | 3425 | |
9b27852e | 3426 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3427 | if (! ovly_table_msym) |
3428 | { | |
8a3fe4f8 | 3429 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3430 | "`_ovly_table' array\n" |
8a3fe4f8 | 3431 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3432 | return 0; |
3433 | } | |
3434 | ||
9216df95 UW |
3435 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3436 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3437 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3438 | |
e17a4113 UW |
3439 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3440 | 4, byte_order); | |
0d43edd1 JB |
3441 | cache_ovly_table |
3442 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3443 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3444 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3445 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3446 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3447 | |
c5aa993b | 3448 | return 1; /* SUCCESS */ |
c906108c SS |
3449 | } |
3450 | ||
5417f6dc | 3451 | /* Function: simple_overlay_update_1 |
c906108c SS |
3452 | A helper function for simple_overlay_update. Assuming a cached copy |
3453 | of _ovly_table exists, look through it to find an entry whose vma, | |
3454 | lma and size match those of OSECT. Re-read the entry and make sure | |
3455 | it still matches OSECT (else the table may no longer be valid). | |
3456 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3457 | success, 0 for failure. */ | |
3458 | ||
3459 | static int | |
fba45db2 | 3460 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3461 | { |
3462 | int i, size; | |
fbd35540 MS |
3463 | bfd *obfd = osect->objfile->obfd; |
3464 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3465 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3466 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3467 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3468 | |
2c500098 | 3469 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3470 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3471 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3472 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3473 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3474 | { |
9216df95 UW |
3475 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3476 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3477 | 4, word_size, byte_order); |
fbd35540 MS |
3478 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3479 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3480 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3481 | { |
3482 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3483 | return 1; | |
3484 | } | |
c378eb4e | 3485 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3486 | return 0; |
3487 | } | |
3488 | return 0; | |
3489 | } | |
3490 | ||
3491 | /* Function: simple_overlay_update | |
5417f6dc RM |
3492 | If OSECT is NULL, then update all sections' mapped state |
3493 | (after re-reading the entire target _ovly_table). | |
3494 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3495 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3496 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3497 | re-read the entire cache, and go ahead and update all sections. */ |
3498 | ||
1c772458 | 3499 | void |
fba45db2 | 3500 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3501 | { |
c5aa993b | 3502 | struct objfile *objfile; |
c906108c | 3503 | |
c378eb4e | 3504 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3505 | if (osect) |
c378eb4e | 3506 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3507 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3508 | { |
3509 | /* Does its cached location match what's currently in the | |
3510 | symtab? */ | |
3511 | struct minimal_symbol *minsym | |
3512 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3513 | ||
3514 | if (minsym == NULL) | |
3515 | error (_("Error reading inferior's overlay table: couldn't " | |
3516 | "find `_ovly_table' array\n" | |
3517 | "in inferior. Use `overlay manual' mode.")); | |
3518 | ||
3519 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3520 | /* Then go ahead and try to look up this single section in | |
3521 | the cache. */ | |
3522 | if (simple_overlay_update_1 (osect)) | |
3523 | /* Found it! We're done. */ | |
3524 | return; | |
3525 | } | |
c906108c SS |
3526 | |
3527 | /* Cached table no good: need to read the entire table anew. | |
3528 | Or else we want all the sections, in which case it's actually | |
3529 | more efficient to read the whole table in one block anyway. */ | |
3530 | ||
0d43edd1 JB |
3531 | if (! simple_read_overlay_table ()) |
3532 | return; | |
3533 | ||
c378eb4e | 3534 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3535 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3536 | if (section_is_overlay (osect)) |
c5aa993b JM |
3537 | { |
3538 | int i, size; | |
fbd35540 MS |
3539 | bfd *obfd = osect->objfile->obfd; |
3540 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3541 | |
2c500098 | 3542 | size = bfd_get_section_size (bsect); |
c5aa993b | 3543 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3544 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3545 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3546 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3547 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3548 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3549 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3550 | } |
3551 | } | |
c906108c SS |
3552 | } |
3553 | ||
086df311 DJ |
3554 | /* Set the output sections and output offsets for section SECTP in |
3555 | ABFD. The relocation code in BFD will read these offsets, so we | |
3556 | need to be sure they're initialized. We map each section to itself, | |
3557 | with no offset; this means that SECTP->vma will be honored. */ | |
3558 | ||
3559 | static void | |
3560 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3561 | { | |
3562 | sectp->output_section = sectp; | |
3563 | sectp->output_offset = 0; | |
3564 | } | |
3565 | ||
ac8035ab TG |
3566 | /* Default implementation for sym_relocate. */ |
3567 | ||
3568 | ||
3569 | bfd_byte * | |
3570 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3571 | bfd_byte *buf) | |
3572 | { | |
3573 | bfd *abfd = objfile->obfd; | |
3574 | ||
3575 | /* We're only interested in sections with relocation | |
3576 | information. */ | |
3577 | if ((sectp->flags & SEC_RELOC) == 0) | |
3578 | return NULL; | |
3579 | ||
3580 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3581 | all sections begin at 0. */ | |
3582 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3583 | ||
3584 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3585 | } | |
3586 | ||
086df311 DJ |
3587 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3588 | contents are stored in BUF if it is non-NULL, or returned in a | |
3589 | malloc'd buffer otherwise. | |
3590 | ||
3591 | For some platforms and debug info formats, shared libraries contain | |
3592 | relocations against the debug sections (particularly for DWARF-2; | |
3593 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3594 | the version of the linker in use). Also, ELF object files naturally | |
3595 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3596 | the relocations in order to get the locations of symbols correct. |
3597 | Another example that may require relocation processing, is the | |
3598 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3599 | debug section. */ | |
086df311 DJ |
3600 | |
3601 | bfd_byte * | |
ac8035ab TG |
3602 | symfile_relocate_debug_section (struct objfile *objfile, |
3603 | asection *sectp, bfd_byte *buf) | |
086df311 | 3604 | { |
ac8035ab | 3605 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3606 | |
ac8035ab | 3607 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3608 | } |
c906108c | 3609 | |
31d99776 DJ |
3610 | struct symfile_segment_data * |
3611 | get_symfile_segment_data (bfd *abfd) | |
3612 | { | |
00b5771c | 3613 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3614 | |
3615 | if (sf == NULL) | |
3616 | return NULL; | |
3617 | ||
3618 | return sf->sym_segments (abfd); | |
3619 | } | |
3620 | ||
3621 | void | |
3622 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3623 | { | |
3624 | xfree (data->segment_bases); | |
3625 | xfree (data->segment_sizes); | |
3626 | xfree (data->segment_info); | |
3627 | xfree (data); | |
3628 | } | |
3629 | ||
28c32713 JB |
3630 | |
3631 | /* Given: | |
3632 | - DATA, containing segment addresses from the object file ABFD, and | |
3633 | the mapping from ABFD's sections onto the segments that own them, | |
3634 | and | |
3635 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3636 | segment addresses reported by the target, | |
3637 | store the appropriate offsets for each section in OFFSETS. | |
3638 | ||
3639 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3640 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3641 | ||
8d385431 DJ |
3642 | If there are more entries, then ignore the extra. The target may |
3643 | not be able to distinguish between an empty data segment and a | |
3644 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3645 | int |
3646 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3647 | struct section_offsets *offsets, | |
3648 | int num_segment_bases, | |
3649 | const CORE_ADDR *segment_bases) | |
3650 | { | |
3651 | int i; | |
3652 | asection *sect; | |
3653 | ||
28c32713 JB |
3654 | /* It doesn't make sense to call this function unless you have some |
3655 | segment base addresses. */ | |
202b96c1 | 3656 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3657 | |
31d99776 DJ |
3658 | /* If we do not have segment mappings for the object file, we |
3659 | can not relocate it by segments. */ | |
3660 | gdb_assert (data != NULL); | |
3661 | gdb_assert (data->num_segments > 0); | |
3662 | ||
31d99776 DJ |
3663 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3664 | { | |
31d99776 DJ |
3665 | int which = data->segment_info[i]; |
3666 | ||
28c32713 JB |
3667 | gdb_assert (0 <= which && which <= data->num_segments); |
3668 | ||
3669 | /* Don't bother computing offsets for sections that aren't | |
3670 | loaded as part of any segment. */ | |
3671 | if (! which) | |
3672 | continue; | |
3673 | ||
3674 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3675 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3676 | if (which > num_segment_bases) |
28c32713 | 3677 | which = num_segment_bases; |
31d99776 | 3678 | |
28c32713 JB |
3679 | offsets->offsets[i] = (segment_bases[which - 1] |
3680 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3681 | } |
3682 | ||
3683 | return 1; | |
3684 | } | |
3685 | ||
3686 | static void | |
3687 | symfile_find_segment_sections (struct objfile *objfile) | |
3688 | { | |
3689 | bfd *abfd = objfile->obfd; | |
3690 | int i; | |
3691 | asection *sect; | |
3692 | struct symfile_segment_data *data; | |
3693 | ||
3694 | data = get_symfile_segment_data (objfile->obfd); | |
3695 | if (data == NULL) | |
3696 | return; | |
3697 | ||
3698 | if (data->num_segments != 1 && data->num_segments != 2) | |
3699 | { | |
3700 | free_symfile_segment_data (data); | |
3701 | return; | |
3702 | } | |
3703 | ||
3704 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3705 | { | |
31d99776 DJ |
3706 | int which = data->segment_info[i]; |
3707 | ||
3708 | if (which == 1) | |
3709 | { | |
3710 | if (objfile->sect_index_text == -1) | |
3711 | objfile->sect_index_text = sect->index; | |
3712 | ||
3713 | if (objfile->sect_index_rodata == -1) | |
3714 | objfile->sect_index_rodata = sect->index; | |
3715 | } | |
3716 | else if (which == 2) | |
3717 | { | |
3718 | if (objfile->sect_index_data == -1) | |
3719 | objfile->sect_index_data = sect->index; | |
3720 | ||
3721 | if (objfile->sect_index_bss == -1) | |
3722 | objfile->sect_index_bss = sect->index; | |
3723 | } | |
3724 | } | |
3725 | ||
3726 | free_symfile_segment_data (data); | |
3727 | } | |
3728 | ||
c906108c | 3729 | void |
fba45db2 | 3730 | _initialize_symfile (void) |
c906108c SS |
3731 | { |
3732 | struct cmd_list_element *c; | |
c5aa993b | 3733 | |
1a966eab AC |
3734 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3735 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3736 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3737 | to execute."), &cmdlist); |
5ba2abeb | 3738 | set_cmd_completer (c, filename_completer); |
c906108c | 3739 | |
1a966eab | 3740 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3741 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3742 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3743 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3744 | The optional arguments are section-name section-address pairs and\n\ |
3745 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3746 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3747 | &cmdlist); |
5ba2abeb | 3748 | set_cmd_completer (c, filename_completer); |
c906108c | 3749 | |
1a966eab AC |
3750 | c = add_cmd ("load", class_files, load_command, _("\ |
3751 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3752 | for access from GDB.\n\ |
3753 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3754 | set_cmd_completer (c, filename_completer); |
c906108c | 3755 | |
5bf193a2 AC |
3756 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3757 | &symbol_reloading, _("\ | |
3758 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3759 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3760 | NULL, | |
920d2a44 | 3761 | show_symbol_reloading, |
5bf193a2 | 3762 | &setlist, &showlist); |
c906108c | 3763 | |
c5aa993b | 3764 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3765 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3766 | "overlay ", 0, &cmdlist); |
3767 | ||
3768 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3769 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3770 | ||
c5aa993b | 3771 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3772 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3773 | |
c5aa993b | 3774 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3775 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3776 | |
c5aa993b | 3777 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3778 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3779 | |
c5aa993b | 3780 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3781 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3782 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3783 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3784 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3785 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3786 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3787 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3788 | |
3789 | /* Filename extension to source language lookup table: */ | |
3790 | init_filename_language_table (); | |
26c41df3 AC |
3791 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3792 | &ext_args, _("\ | |
3793 | Set mapping between filename extension and source language."), _("\ | |
3794 | Show mapping between filename extension and source language."), _("\ | |
3795 | Usage: set extension-language .foo bar"), | |
3796 | set_ext_lang_command, | |
920d2a44 | 3797 | show_ext_args, |
26c41df3 | 3798 | &setlist, &showlist); |
c906108c | 3799 | |
c5aa993b | 3800 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3801 | _("All filename extensions associated with a source language.")); |
917317f4 | 3802 | |
525226b5 AC |
3803 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3804 | &debug_file_directory, _("\ | |
24ddea62 JK |
3805 | Set the directories where separate debug symbols are searched for."), _("\ |
3806 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3807 | Separate debug symbols are first searched for in the same\n\ |
3808 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3809 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3810 | each global debug-file-directory component prepended."), |
525226b5 | 3811 | NULL, |
920d2a44 | 3812 | show_debug_file_directory, |
525226b5 | 3813 | &setlist, &showlist); |
c906108c | 3814 | } |