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" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
62 | #include "gdb_string.h" | |
63 | #include "gdb_stat.h" | |
64 | #include <ctype.h> | |
65 | #include <time.h> | |
2b71414d | 66 | #include <sys/time.h> |
c906108c | 67 | |
ccefe4c4 | 68 | #include "psymtab.h" |
c906108c | 69 | |
3e43a32a MS |
70 | int (*deprecated_ui_load_progress_hook) (const char *section, |
71 | unsigned long num); | |
9a4105ab | 72 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
73 | unsigned long section_sent, |
74 | unsigned long section_size, | |
75 | unsigned long total_sent, | |
c2d11a7d | 76 | unsigned long total_size); |
769d7dc4 AC |
77 | void (*deprecated_pre_add_symbol_hook) (const char *); |
78 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 79 | |
74b7792f AC |
80 | static void clear_symtab_users_cleanup (void *ignore); |
81 | ||
c378eb4e MS |
82 | /* Global variables owned by this file. */ |
83 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
c906108c | 84 | |
c378eb4e | 85 | /* External variables and functions referenced. */ |
c906108c | 86 | |
a14ed312 | 87 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c | 88 | |
c378eb4e | 89 | /* Functions this file defines. */ |
c906108c | 90 | |
a14ed312 | 91 | static void load_command (char *, int); |
c906108c | 92 | |
d7db6da9 FN |
93 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
94 | ||
a14ed312 | 95 | static void add_symbol_file_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | bfd *symfile_bfd_open (char *); |
c906108c | 98 | |
0e931cf0 JB |
99 | int get_section_index (struct objfile *, char *); |
100 | ||
00b5771c | 101 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 102 | |
a14ed312 | 103 | static void decrement_reading_symtab (void *); |
c906108c | 104 | |
a14ed312 | 105 | static void overlay_invalidate_all (void); |
c906108c | 106 | |
a14ed312 | 107 | void list_overlays_command (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | void map_overlay_command (char *, int); |
c906108c | 110 | |
a14ed312 | 111 | void unmap_overlay_command (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void overlay_auto_command (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static void overlay_manual_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void overlay_off_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static void overlay_load_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void overlay_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void simple_free_overlay_table (void); |
c906108c | 124 | |
e17a4113 UW |
125 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
126 | enum bfd_endian); | |
c906108c | 127 | |
a14ed312 | 128 | static int simple_read_overlay_table (void); |
c906108c | 129 | |
a14ed312 | 130 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 131 | |
a14ed312 | 132 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 133 | |
a14ed312 | 134 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 135 | |
a14ed312 | 136 | static void init_filename_language_table (void); |
392a587b | 137 | |
31d99776 DJ |
138 | static void symfile_find_segment_sections (struct objfile *objfile); |
139 | ||
a14ed312 | 140 | void _initialize_symfile (void); |
c906108c SS |
141 | |
142 | /* List of all available sym_fns. On gdb startup, each object file reader | |
143 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 144 | prepared to read. */ |
c906108c | 145 | |
00b5771c TT |
146 | typedef const struct sym_fns *sym_fns_ptr; |
147 | DEF_VEC_P (sym_fns_ptr); | |
148 | ||
149 | static VEC (sym_fns_ptr) *symtab_fns = NULL; | |
c906108c SS |
150 | |
151 | /* Flag for whether user will be reloading symbols multiple times. | |
152 | Defaults to ON for VxWorks, otherwise OFF. */ | |
153 | ||
154 | #ifdef SYMBOL_RELOADING_DEFAULT | |
155 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
156 | #else | |
157 | int symbol_reloading = 0; | |
158 | #endif | |
920d2a44 AC |
159 | static void |
160 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
161 | struct cmd_list_element *c, const char *value) | |
162 | { | |
3e43a32a MS |
163 | fprintf_filtered (file, _("Dynamic symbol table reloading " |
164 | "multiple times in one run is %s.\n"), | |
920d2a44 AC |
165 | value); |
166 | } | |
167 | ||
b7209cb4 FF |
168 | /* If non-zero, shared library symbols will be added automatically |
169 | when the inferior is created, new libraries are loaded, or when | |
170 | attaching to the inferior. This is almost always what users will | |
171 | want to have happen; but for very large programs, the startup time | |
172 | will be excessive, and so if this is a problem, the user can clear | |
173 | this flag and then add the shared library symbols as needed. Note | |
174 | that there is a potential for confusion, since if the shared | |
c906108c | 175 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 176 | report all the functions that are actually present. */ |
c906108c SS |
177 | |
178 | int auto_solib_add = 1; | |
c906108c | 179 | \f |
c5aa993b | 180 | |
c906108c SS |
181 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
182 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
c378eb4e | 183 | Note that the string at PTR does not have to be null terminated, I.e. it |
0d14a781 | 184 | may be part of a larger string and we are only saving a substring. */ |
c906108c SS |
185 | |
186 | char * | |
63ca651f | 187 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 188 | { |
52f0bd74 | 189 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
190 | /* Open-coded memcpy--saves function call time. These strings are usually |
191 | short. FIXME: Is this really still true with a compiler that can | |
c378eb4e | 192 | inline memcpy? */ |
c906108c | 193 | { |
aa1ee363 AC |
194 | const char *p1 = ptr; |
195 | char *p2 = p; | |
63ca651f | 196 | const char *end = ptr + size; |
433759f7 | 197 | |
c906108c SS |
198 | while (p1 != end) |
199 | *p2++ = *p1++; | |
200 | } | |
201 | p[size] = 0; | |
202 | return p; | |
203 | } | |
204 | ||
3e43a32a MS |
205 | /* Concatenate NULL terminated variable argument list of `const char *' |
206 | strings; return the new string. Space is found in the OBSTACKP. | |
207 | Argument list must be terminated by a sentinel expression `(char *) | |
208 | NULL'. */ | |
c906108c SS |
209 | |
210 | char * | |
48cb83fd | 211 | obconcat (struct obstack *obstackp, ...) |
c906108c | 212 | { |
48cb83fd JK |
213 | va_list ap; |
214 | ||
215 | va_start (ap, obstackp); | |
216 | for (;;) | |
217 | { | |
218 | const char *s = va_arg (ap, const char *); | |
219 | ||
220 | if (s == NULL) | |
221 | break; | |
222 | ||
223 | obstack_grow_str (obstackp, s); | |
224 | } | |
225 | va_end (ap); | |
226 | obstack_1grow (obstackp, 0); | |
227 | ||
228 | return obstack_finish (obstackp); | |
c906108c SS |
229 | } |
230 | ||
0d14a781 | 231 | /* True if we are reading a symbol table. */ |
c906108c SS |
232 | |
233 | int currently_reading_symtab = 0; | |
234 | ||
235 | static void | |
fba45db2 | 236 | decrement_reading_symtab (void *dummy) |
c906108c SS |
237 | { |
238 | currently_reading_symtab--; | |
239 | } | |
240 | ||
ccefe4c4 TT |
241 | /* Increment currently_reading_symtab and return a cleanup that can be |
242 | used to decrement it. */ | |
243 | struct cleanup * | |
244 | increment_reading_symtab (void) | |
c906108c | 245 | { |
ccefe4c4 TT |
246 | ++currently_reading_symtab; |
247 | return make_cleanup (decrement_reading_symtab, NULL); | |
c906108c SS |
248 | } |
249 | ||
5417f6dc RM |
250 | /* Remember the lowest-addressed loadable section we've seen. |
251 | This function is called via bfd_map_over_sections. | |
c906108c SS |
252 | |
253 | In case of equal vmas, the section with the largest size becomes the | |
254 | lowest-addressed loadable section. | |
255 | ||
256 | If the vmas and sizes are equal, the last section is considered the | |
257 | lowest-addressed loadable section. */ | |
258 | ||
259 | void | |
4efb68b1 | 260 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 261 | { |
c5aa993b | 262 | asection **lowest = (asection **) obj; |
c906108c | 263 | |
eb73e134 | 264 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
265 | return; |
266 | if (!*lowest) | |
267 | *lowest = sect; /* First loadable section */ | |
268 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
269 | *lowest = sect; /* A lower loadable section */ | |
270 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
271 | && (bfd_section_size (abfd, (*lowest)) | |
272 | <= bfd_section_size (abfd, sect))) | |
273 | *lowest = sect; | |
274 | } | |
275 | ||
a39a16c4 MM |
276 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
277 | ||
278 | struct section_addr_info * | |
279 | alloc_section_addr_info (size_t num_sections) | |
280 | { | |
281 | struct section_addr_info *sap; | |
282 | size_t size; | |
283 | ||
284 | size = (sizeof (struct section_addr_info) | |
285 | + sizeof (struct other_sections) * (num_sections - 1)); | |
286 | sap = (struct section_addr_info *) xmalloc (size); | |
287 | memset (sap, 0, size); | |
288 | sap->num_sections = num_sections; | |
289 | ||
290 | return sap; | |
291 | } | |
62557bbc KB |
292 | |
293 | /* Build (allocate and populate) a section_addr_info struct from | |
c378eb4e | 294 | an existing section table. */ |
62557bbc KB |
295 | |
296 | extern struct section_addr_info * | |
0542c86d PA |
297 | build_section_addr_info_from_section_table (const struct target_section *start, |
298 | const struct target_section *end) | |
62557bbc KB |
299 | { |
300 | struct section_addr_info *sap; | |
0542c86d | 301 | const struct target_section *stp; |
62557bbc KB |
302 | int oidx; |
303 | ||
a39a16c4 | 304 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
305 | |
306 | for (stp = start, oidx = 0; stp != end; stp++) | |
307 | { | |
5417f6dc | 308 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 309 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 310 | && oidx < end - start) |
62557bbc KB |
311 | { |
312 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 313 | sap->other[oidx].name |
fbd35540 | 314 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
315 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
316 | oidx++; | |
317 | } | |
318 | } | |
319 | ||
320 | return sap; | |
321 | } | |
322 | ||
82ccf5a5 | 323 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 324 | |
82ccf5a5 JK |
325 | static struct section_addr_info * |
326 | build_section_addr_info_from_bfd (bfd *abfd) | |
089b4803 TG |
327 | { |
328 | struct section_addr_info *sap; | |
329 | int i; | |
330 | struct bfd_section *sec; | |
331 | ||
82ccf5a5 JK |
332 | sap = alloc_section_addr_info (bfd_count_sections (abfd)); |
333 | for (i = 0, sec = abfd->sections; sec != NULL; sec = sec->next) | |
334 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
012836ea | 335 | { |
82ccf5a5 JK |
336 | sap->other[i].addr = bfd_get_section_vma (abfd, sec); |
337 | sap->other[i].name = xstrdup (bfd_get_section_name (abfd, sec)); | |
012836ea JK |
338 | sap->other[i].sectindex = sec->index; |
339 | i++; | |
340 | } | |
089b4803 TG |
341 | return sap; |
342 | } | |
343 | ||
82ccf5a5 JK |
344 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
345 | ||
346 | struct section_addr_info * | |
347 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
348 | { | |
349 | struct section_addr_info *sap; | |
350 | int i; | |
351 | ||
352 | /* Before reread_symbols gets rewritten it is not safe to call: | |
353 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
354 | */ | |
355 | sap = build_section_addr_info_from_bfd (objfile->obfd); | |
356 | for (i = 0; i < sap->num_sections && sap->other[i].name; i++) | |
357 | { | |
358 | int sectindex = sap->other[i].sectindex; | |
359 | ||
360 | sap->other[i].addr += objfile->section_offsets->offsets[sectindex]; | |
361 | } | |
362 | return sap; | |
363 | } | |
62557bbc | 364 | |
c378eb4e | 365 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ |
62557bbc KB |
366 | |
367 | extern void | |
368 | free_section_addr_info (struct section_addr_info *sap) | |
369 | { | |
370 | int idx; | |
371 | ||
a39a16c4 | 372 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 373 | if (sap->other[idx].name) |
b8c9b27d KB |
374 | xfree (sap->other[idx].name); |
375 | xfree (sap); | |
62557bbc KB |
376 | } |
377 | ||
378 | ||
e8289572 JB |
379 | /* Initialize OBJFILE's sect_index_* members. */ |
380 | static void | |
381 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 382 | { |
e8289572 | 383 | asection *sect; |
c906108c | 384 | int i; |
5417f6dc | 385 | |
b8fbeb18 | 386 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 387 | if (sect) |
b8fbeb18 EZ |
388 | objfile->sect_index_text = sect->index; |
389 | ||
390 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 391 | if (sect) |
b8fbeb18 EZ |
392 | objfile->sect_index_data = sect->index; |
393 | ||
394 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 395 | if (sect) |
b8fbeb18 EZ |
396 | objfile->sect_index_bss = sect->index; |
397 | ||
398 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 399 | if (sect) |
b8fbeb18 EZ |
400 | objfile->sect_index_rodata = sect->index; |
401 | ||
bbcd32ad FF |
402 | /* This is where things get really weird... We MUST have valid |
403 | indices for the various sect_index_* members or gdb will abort. | |
404 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
405 | accomodate that. First, check for a file with the standard |
406 | one or two segments. */ | |
407 | ||
408 | symfile_find_segment_sections (objfile); | |
409 | ||
410 | /* Except when explicitly adding symbol files at some address, | |
411 | section_offsets contains nothing but zeros, so it doesn't matter | |
412 | which slot in section_offsets the individual sect_index_* members | |
413 | index into. So if they are all zero, it is safe to just point | |
414 | all the currently uninitialized indices to the first slot. But | |
415 | beware: if this is the main executable, it may be relocated | |
416 | later, e.g. by the remote qOffsets packet, and then this will | |
417 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
418 | |
419 | for (i = 0; i < objfile->num_sections; i++) | |
420 | { | |
421 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
422 | { | |
423 | break; | |
424 | } | |
425 | } | |
426 | if (i == objfile->num_sections) | |
427 | { | |
428 | if (objfile->sect_index_text == -1) | |
429 | objfile->sect_index_text = 0; | |
430 | if (objfile->sect_index_data == -1) | |
431 | objfile->sect_index_data = 0; | |
432 | if (objfile->sect_index_bss == -1) | |
433 | objfile->sect_index_bss = 0; | |
434 | if (objfile->sect_index_rodata == -1) | |
435 | objfile->sect_index_rodata = 0; | |
436 | } | |
b8fbeb18 | 437 | } |
c906108c | 438 | |
c1bd25fd DJ |
439 | /* The arguments to place_section. */ |
440 | ||
441 | struct place_section_arg | |
442 | { | |
443 | struct section_offsets *offsets; | |
444 | CORE_ADDR lowest; | |
445 | }; | |
446 | ||
447 | /* Find a unique offset to use for loadable section SECT if | |
448 | the user did not provide an offset. */ | |
449 | ||
2c0b251b | 450 | static void |
c1bd25fd DJ |
451 | place_section (bfd *abfd, asection *sect, void *obj) |
452 | { | |
453 | struct place_section_arg *arg = obj; | |
454 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
455 | int done; | |
3bd72c6f | 456 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 457 | |
2711e456 DJ |
458 | /* We are only interested in allocated sections. */ |
459 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
460 | return; |
461 | ||
462 | /* If the user specified an offset, honor it. */ | |
463 | if (offsets[sect->index] != 0) | |
464 | return; | |
465 | ||
466 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
467 | start_addr = (arg->lowest + align - 1) & -align; |
468 | ||
c1bd25fd DJ |
469 | do { |
470 | asection *cur_sec; | |
c1bd25fd | 471 | |
c1bd25fd DJ |
472 | done = 1; |
473 | ||
474 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
475 | { | |
476 | int indx = cur_sec->index; | |
c1bd25fd DJ |
477 | |
478 | /* We don't need to compare against ourself. */ | |
479 | if (cur_sec == sect) | |
480 | continue; | |
481 | ||
2711e456 DJ |
482 | /* We can only conflict with allocated sections. */ |
483 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
484 | continue; |
485 | ||
486 | /* If the section offset is 0, either the section has not been placed | |
487 | yet, or it was the lowest section placed (in which case LOWEST | |
488 | will be past its end). */ | |
489 | if (offsets[indx] == 0) | |
490 | continue; | |
491 | ||
492 | /* If this section would overlap us, then we must move up. */ | |
493 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
494 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
495 | { | |
496 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
497 | start_addr = (start_addr + align - 1) & -align; | |
498 | done = 0; | |
3bd72c6f | 499 | break; |
c1bd25fd DJ |
500 | } |
501 | ||
502 | /* Otherwise, we appear to be OK. So far. */ | |
503 | } | |
504 | } | |
505 | while (!done); | |
506 | ||
507 | offsets[sect->index] = start_addr; | |
508 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 509 | } |
e8289572 | 510 | |
75242ef4 JK |
511 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
512 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
513 | entries. */ | |
e8289572 JB |
514 | |
515 | void | |
75242ef4 JK |
516 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
517 | int num_sections, | |
518 | struct section_addr_info *addrs) | |
e8289572 JB |
519 | { |
520 | int i; | |
521 | ||
75242ef4 | 522 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 523 | |
c378eb4e | 524 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 525 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 526 | { |
75242ef4 | 527 | struct other_sections *osp; |
e8289572 | 528 | |
75242ef4 | 529 | osp = &addrs->other[i]; |
5488dafb | 530 | if (osp->sectindex == -1) |
e8289572 JB |
531 | continue; |
532 | ||
c378eb4e | 533 | /* Record all sections in offsets. */ |
e8289572 | 534 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 535 | the BFD index. */ |
75242ef4 JK |
536 | section_offsets->offsets[osp->sectindex] = osp->addr; |
537 | } | |
538 | } | |
539 | ||
1276c759 JK |
540 | /* Transform section name S for a name comparison. prelink can split section |
541 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
542 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
543 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
544 | (`.sbss') section has invalid (increased) virtual address. */ | |
545 | ||
546 | static const char * | |
547 | addr_section_name (const char *s) | |
548 | { | |
549 | if (strcmp (s, ".dynbss") == 0) | |
550 | return ".bss"; | |
551 | if (strcmp (s, ".sdynbss") == 0) | |
552 | return ".sbss"; | |
553 | ||
554 | return s; | |
555 | } | |
556 | ||
82ccf5a5 JK |
557 | /* qsort comparator for addrs_section_sort. Sort entries in ascending order by |
558 | their (name, sectindex) pair. sectindex makes the sort by name stable. */ | |
559 | ||
560 | static int | |
561 | addrs_section_compar (const void *ap, const void *bp) | |
562 | { | |
563 | const struct other_sections *a = *((struct other_sections **) ap); | |
564 | const struct other_sections *b = *((struct other_sections **) bp); | |
565 | int retval, a_idx, b_idx; | |
566 | ||
1276c759 | 567 | retval = strcmp (addr_section_name (a->name), addr_section_name (b->name)); |
82ccf5a5 JK |
568 | if (retval) |
569 | return retval; | |
570 | ||
5488dafb | 571 | return a->sectindex - b->sectindex; |
82ccf5a5 JK |
572 | } |
573 | ||
574 | /* Provide sorted array of pointers to sections of ADDRS. The array is | |
575 | terminated by NULL. Caller is responsible to call xfree for it. */ | |
576 | ||
577 | static struct other_sections ** | |
578 | addrs_section_sort (struct section_addr_info *addrs) | |
579 | { | |
580 | struct other_sections **array; | |
581 | int i; | |
582 | ||
583 | /* `+ 1' for the NULL terminator. */ | |
584 | array = xmalloc (sizeof (*array) * (addrs->num_sections + 1)); | |
585 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
586 | array[i] = &addrs->other[i]; | |
587 | array[i] = NULL; | |
588 | ||
589 | qsort (array, i, sizeof (*array), addrs_section_compar); | |
590 | ||
591 | return array; | |
592 | } | |
593 | ||
75242ef4 | 594 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
595 | also SECTINDEXes specific to ABFD there. This function can be used to |
596 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
597 | |
598 | void | |
599 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
600 | { | |
601 | asection *lower_sect; | |
75242ef4 JK |
602 | CORE_ADDR lower_offset; |
603 | int i; | |
82ccf5a5 JK |
604 | struct cleanup *my_cleanup; |
605 | struct section_addr_info *abfd_addrs; | |
606 | struct other_sections **addrs_sorted, **abfd_addrs_sorted; | |
607 | struct other_sections **addrs_to_abfd_addrs; | |
75242ef4 JK |
608 | |
609 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
610 | continguous sections. */ |
611 | lower_sect = NULL; | |
612 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
613 | if (lower_sect == NULL) |
614 | { | |
615 | warning (_("no loadable sections found in added symbol-file %s"), | |
616 | bfd_get_filename (abfd)); | |
617 | lower_offset = 0; | |
e8289572 | 618 | } |
75242ef4 JK |
619 | else |
620 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
621 | ||
82ccf5a5 JK |
622 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
623 | in ABFD. Section names are not unique - there can be multiple sections of | |
624 | the same name. Also the sections of the same name do not have to be | |
625 | adjacent to each other. Some sections may be present only in one of the | |
626 | files. Even sections present in both files do not have to be in the same | |
627 | order. | |
628 | ||
629 | Use stable sort by name for the sections in both files. Then linearly | |
630 | scan both lists matching as most of the entries as possible. */ | |
631 | ||
632 | addrs_sorted = addrs_section_sort (addrs); | |
633 | my_cleanup = make_cleanup (xfree, addrs_sorted); | |
634 | ||
635 | abfd_addrs = build_section_addr_info_from_bfd (abfd); | |
636 | make_cleanup_free_section_addr_info (abfd_addrs); | |
637 | abfd_addrs_sorted = addrs_section_sort (abfd_addrs); | |
638 | make_cleanup (xfree, abfd_addrs_sorted); | |
639 | ||
c378eb4e MS |
640 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
641 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 JK |
642 | |
643 | addrs_to_abfd_addrs = xzalloc (sizeof (*addrs_to_abfd_addrs) | |
644 | * addrs->num_sections); | |
645 | make_cleanup (xfree, addrs_to_abfd_addrs); | |
646 | ||
647 | while (*addrs_sorted) | |
648 | { | |
1276c759 | 649 | const char *sect_name = addr_section_name ((*addrs_sorted)->name); |
82ccf5a5 JK |
650 | |
651 | while (*abfd_addrs_sorted | |
1276c759 JK |
652 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
653 | sect_name) < 0) | |
82ccf5a5 JK |
654 | abfd_addrs_sorted++; |
655 | ||
656 | if (*abfd_addrs_sorted | |
1276c759 JK |
657 | && strcmp (addr_section_name ((*abfd_addrs_sorted)->name), |
658 | sect_name) == 0) | |
82ccf5a5 JK |
659 | { |
660 | int index_in_addrs; | |
661 | ||
662 | /* Make the found item directly addressable from ADDRS. */ | |
663 | index_in_addrs = *addrs_sorted - addrs->other; | |
664 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); | |
665 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_addrs_sorted; | |
666 | ||
667 | /* Never use the same ABFD entry twice. */ | |
668 | abfd_addrs_sorted++; | |
669 | } | |
670 | ||
671 | addrs_sorted++; | |
672 | } | |
673 | ||
75242ef4 JK |
674 | /* Calculate offsets for the loadable sections. |
675 | FIXME! Sections must be in order of increasing loadable section | |
676 | so that contiguous sections can use the lower-offset!!! | |
677 | ||
678 | Adjust offsets if the segments are not contiguous. | |
679 | If the section is contiguous, its offset should be set to | |
680 | the offset of the highest loadable section lower than it | |
681 | (the loadable section directly below it in memory). | |
682 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
683 | ||
684 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
685 | { | |
82ccf5a5 | 686 | struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
687 | |
688 | if (sect) | |
75242ef4 | 689 | { |
c378eb4e | 690 | /* This is the index used by BFD. */ |
82ccf5a5 | 691 | addrs->other[i].sectindex = sect->sectindex; |
672d9c23 JK |
692 | |
693 | if (addrs->other[i].addr != 0) | |
75242ef4 | 694 | { |
82ccf5a5 | 695 | addrs->other[i].addr -= sect->addr; |
75242ef4 | 696 | lower_offset = addrs->other[i].addr; |
75242ef4 JK |
697 | } |
698 | else | |
672d9c23 | 699 | addrs->other[i].addr = lower_offset; |
75242ef4 JK |
700 | } |
701 | else | |
672d9c23 | 702 | { |
1276c759 JK |
703 | /* addr_section_name transformation is not used for SECT_NAME. */ |
704 | const char *sect_name = addrs->other[i].name; | |
705 | ||
b0fcb67f JK |
706 | /* This section does not exist in ABFD, which is normally |
707 | unexpected and we want to issue a warning. | |
708 | ||
4d9743af JK |
709 | However, the ELF prelinker does create a few sections which are |
710 | marked in the main executable as loadable (they are loaded in | |
711 | memory from the DYNAMIC segment) and yet are not present in | |
712 | separate debug info files. This is fine, and should not cause | |
713 | a warning. Shared libraries contain just the section | |
714 | ".gnu.liblist" but it is not marked as loadable there. There is | |
715 | no other way to identify them than by their name as the sections | |
1276c759 JK |
716 | created by prelink have no special flags. |
717 | ||
718 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f JK |
719 | |
720 | if (!(strcmp (sect_name, ".gnu.liblist") == 0 | |
4d9743af | 721 | || strcmp (sect_name, ".gnu.conflict") == 0 |
1276c759 JK |
722 | || (strcmp (sect_name, ".bss") == 0 |
723 | && i > 0 | |
724 | && strcmp (addrs->other[i - 1].name, ".dynbss") == 0 | |
725 | && addrs_to_abfd_addrs[i - 1] != NULL) | |
726 | || (strcmp (sect_name, ".sbss") == 0 | |
727 | && i > 0 | |
728 | && strcmp (addrs->other[i - 1].name, ".sdynbss") == 0 | |
729 | && addrs_to_abfd_addrs[i - 1] != NULL))) | |
b0fcb67f JK |
730 | warning (_("section %s not found in %s"), sect_name, |
731 | bfd_get_filename (abfd)); | |
732 | ||
672d9c23 | 733 | addrs->other[i].addr = 0; |
5488dafb | 734 | addrs->other[i].sectindex = -1; |
672d9c23 | 735 | } |
75242ef4 | 736 | } |
82ccf5a5 JK |
737 | |
738 | do_cleanups (my_cleanup); | |
75242ef4 JK |
739 | } |
740 | ||
741 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
742 | of how to represent it for fast symbol reading. This is the default | |
743 | version of the sym_fns.sym_offsets function for symbol readers that | |
744 | don't need to do anything special. It allocates a section_offsets table | |
745 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
746 | ||
747 | void | |
748 | default_symfile_offsets (struct objfile *objfile, | |
749 | struct section_addr_info *addrs) | |
750 | { | |
751 | objfile->num_sections = bfd_count_sections (objfile->obfd); | |
752 | objfile->section_offsets = (struct section_offsets *) | |
753 | obstack_alloc (&objfile->objfile_obstack, | |
754 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
755 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
756 | objfile->num_sections, addrs); | |
e8289572 | 757 | |
c1bd25fd DJ |
758 | /* For relocatable files, all loadable sections will start at zero. |
759 | The zero is meaningless, so try to pick arbitrary addresses such | |
760 | that no loadable sections overlap. This algorithm is quadratic, | |
761 | but the number of sections in a single object file is generally | |
762 | small. */ | |
763 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
764 | { | |
765 | struct place_section_arg arg; | |
2711e456 DJ |
766 | bfd *abfd = objfile->obfd; |
767 | asection *cur_sec; | |
2711e456 DJ |
768 | |
769 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
770 | /* We do not expect this to happen; just skip this step if the | |
771 | relocatable file has a section with an assigned VMA. */ | |
772 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
773 | break; | |
774 | ||
775 | if (cur_sec == NULL) | |
776 | { | |
777 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
778 | ||
779 | /* Pick non-overlapping offsets for sections the user did not | |
780 | place explicitly. */ | |
781 | arg.offsets = objfile->section_offsets; | |
782 | arg.lowest = 0; | |
783 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
784 | ||
785 | /* Correctly filling in the section offsets is not quite | |
786 | enough. Relocatable files have two properties that | |
787 | (most) shared objects do not: | |
788 | ||
789 | - Their debug information will contain relocations. Some | |
790 | shared libraries do also, but many do not, so this can not | |
791 | be assumed. | |
792 | ||
793 | - If there are multiple code sections they will be loaded | |
794 | at different relative addresses in memory than they are | |
795 | in the objfile, since all sections in the file will start | |
796 | at address zero. | |
797 | ||
798 | Because GDB has very limited ability to map from an | |
799 | address in debug info to the correct code section, | |
800 | it relies on adding SECT_OFF_TEXT to things which might be | |
801 | code. If we clear all the section offsets, and set the | |
802 | section VMAs instead, then symfile_relocate_debug_section | |
803 | will return meaningful debug information pointing at the | |
804 | correct sections. | |
805 | ||
806 | GDB has too many different data structures for section | |
807 | addresses - a bfd, objfile, and so_list all have section | |
808 | tables, as does exec_ops. Some of these could probably | |
809 | be eliminated. */ | |
810 | ||
811 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
812 | cur_sec = cur_sec->next) | |
813 | { | |
814 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
815 | continue; | |
816 | ||
817 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
818 | exec_set_section_address (bfd_get_filename (abfd), |
819 | cur_sec->index, | |
30510692 | 820 | offsets[cur_sec->index]); |
2711e456 DJ |
821 | offsets[cur_sec->index] = 0; |
822 | } | |
823 | } | |
c1bd25fd DJ |
824 | } |
825 | ||
e8289572 | 826 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 827 | .rodata sections. */ |
e8289572 JB |
828 | init_objfile_sect_indices (objfile); |
829 | } | |
830 | ||
831 | ||
31d99776 DJ |
832 | /* Divide the file into segments, which are individual relocatable units. |
833 | This is the default version of the sym_fns.sym_segments function for | |
834 | symbol readers that do not have an explicit representation of segments. | |
835 | It assumes that object files do not have segments, and fully linked | |
836 | files have a single segment. */ | |
837 | ||
838 | struct symfile_segment_data * | |
839 | default_symfile_segments (bfd *abfd) | |
840 | { | |
841 | int num_sections, i; | |
842 | asection *sect; | |
843 | struct symfile_segment_data *data; | |
844 | CORE_ADDR low, high; | |
845 | ||
846 | /* Relocatable files contain enough information to position each | |
847 | loadable section independently; they should not be relocated | |
848 | in segments. */ | |
849 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
850 | return NULL; | |
851 | ||
852 | /* Make sure there is at least one loadable section in the file. */ | |
853 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
854 | { | |
855 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
856 | continue; | |
857 | ||
858 | break; | |
859 | } | |
860 | if (sect == NULL) | |
861 | return NULL; | |
862 | ||
863 | low = bfd_get_section_vma (abfd, sect); | |
864 | high = low + bfd_get_section_size (sect); | |
865 | ||
866 | data = XZALLOC (struct symfile_segment_data); | |
867 | data->num_segments = 1; | |
868 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
869 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
870 | ||
871 | num_sections = bfd_count_sections (abfd); | |
872 | data->segment_info = XCALLOC (num_sections, int); | |
873 | ||
874 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
875 | { | |
876 | CORE_ADDR vma; | |
877 | ||
878 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
879 | continue; | |
880 | ||
881 | vma = bfd_get_section_vma (abfd, sect); | |
882 | if (vma < low) | |
883 | low = vma; | |
884 | if (vma + bfd_get_section_size (sect) > high) | |
885 | high = vma + bfd_get_section_size (sect); | |
886 | ||
887 | data->segment_info[i] = 1; | |
888 | } | |
889 | ||
890 | data->segment_bases[0] = low; | |
891 | data->segment_sizes[0] = high - low; | |
892 | ||
893 | return data; | |
894 | } | |
895 | ||
c906108c SS |
896 | /* Process a symbol file, as either the main file or as a dynamically |
897 | loaded file. | |
898 | ||
96baa820 JM |
899 | OBJFILE is where the symbols are to be read from. |
900 | ||
7e8580c1 JB |
901 | ADDRS is the list of section load addresses. If the user has given |
902 | an 'add-symbol-file' command, then this is the list of offsets and | |
903 | addresses he or she provided as arguments to the command; or, if | |
904 | we're handling a shared library, these are the actual addresses the | |
905 | sections are loaded at, according to the inferior's dynamic linker | |
906 | (as gleaned by GDB's shared library code). We convert each address | |
907 | into an offset from the section VMA's as it appears in the object | |
908 | file, and then call the file's sym_offsets function to convert this | |
909 | into a format-specific offset table --- a `struct section_offsets'. | |
910 | If ADDRS is non-zero, OFFSETS must be zero. | |
911 | ||
912 | OFFSETS is a table of section offsets already in the right | |
913 | format-specific representation. NUM_OFFSETS is the number of | |
914 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
915 | assume this is the proper table the call to sym_offsets described | |
916 | above would produce. Instead of calling sym_offsets, we just dump | |
917 | it right into objfile->section_offsets. (When we're re-reading | |
918 | symbols from an objfile, we don't have the original load address | |
919 | list any more; all we have is the section offset table.) If | |
920 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 921 | |
7eedccfa PP |
922 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
923 | an extra symbol file such as dynamically loaded code, and wether | |
924 | breakpoint reset should be deferred. */ | |
c906108c SS |
925 | |
926 | void | |
7e8580c1 JB |
927 | syms_from_objfile (struct objfile *objfile, |
928 | struct section_addr_info *addrs, | |
929 | struct section_offsets *offsets, | |
930 | int num_offsets, | |
7eedccfa | 931 | int add_flags) |
c906108c | 932 | { |
a39a16c4 | 933 | struct section_addr_info *local_addr = NULL; |
c906108c | 934 | struct cleanup *old_chain; |
7eedccfa | 935 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 936 | |
7e8580c1 | 937 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 938 | |
c906108c | 939 | init_entry_point_info (objfile); |
31d99776 | 940 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 941 | |
75245b24 | 942 | if (objfile->sf == NULL) |
c378eb4e | 943 | return; /* No symbols. */ |
75245b24 | 944 | |
c906108c SS |
945 | /* Make sure that partially constructed symbol tables will be cleaned up |
946 | if an error occurs during symbol reading. */ | |
74b7792f | 947 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 948 | |
a39a16c4 MM |
949 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
950 | list. We now establish the convention that an addr of zero means | |
c378eb4e | 951 | no load address was specified. */ |
a39a16c4 MM |
952 | if (! addrs && ! offsets) |
953 | { | |
5417f6dc | 954 | local_addr |
a39a16c4 MM |
955 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
956 | make_cleanup (xfree, local_addr); | |
957 | addrs = local_addr; | |
958 | } | |
959 | ||
960 | /* Now either addrs or offsets is non-zero. */ | |
961 | ||
c5aa993b | 962 | if (mainline) |
c906108c SS |
963 | { |
964 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 965 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 966 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
967 | |
968 | /* Since no error yet, throw away the old symbol table. */ | |
969 | ||
970 | if (symfile_objfile != NULL) | |
971 | { | |
972 | free_objfile (symfile_objfile); | |
adb7f338 | 973 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
974 | } |
975 | ||
976 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
977 | If the user wants to get rid of them, they should do "symbol-file" |
978 | without arguments first. Not sure this is the best behavior | |
979 | (PR 2207). */ | |
c906108c | 980 | |
c5aa993b | 981 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
982 | } |
983 | ||
984 | /* Convert addr into an offset rather than an absolute address. | |
985 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 986 | and assume that <addr> is where that got loaded. |
c906108c | 987 | |
53a5351d JM |
988 | We no longer warn if the lowest section is not a text segment (as |
989 | happens for the PA64 port. */ | |
0d15807d | 990 | if (addrs && addrs->other[0].name) |
75242ef4 | 991 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
992 | |
993 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
994 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 995 | initial symbol reading for this file. */ |
c906108c | 996 | |
c5aa993b | 997 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 998 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 999 | |
7e8580c1 JB |
1000 | if (addrs) |
1001 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
1002 | else | |
1003 | { | |
1004 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
1005 | ||
1006 | /* Just copy in the offset table directly as given to us. */ | |
1007 | objfile->num_sections = num_offsets; | |
1008 | objfile->section_offsets | |
1009 | = ((struct section_offsets *) | |
8b92e4d5 | 1010 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
1011 | memcpy (objfile->section_offsets, offsets, size); |
1012 | ||
1013 | init_objfile_sect_indices (objfile); | |
1014 | } | |
c906108c | 1015 | |
f4352531 | 1016 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 1017 | |
b11896a5 TT |
1018 | if ((add_flags & SYMFILE_NO_READ) == 0) |
1019 | require_partial_symbols (objfile, 0); | |
1020 | ||
c906108c SS |
1021 | /* Discard cleanups as symbol reading was successful. */ |
1022 | ||
1023 | discard_cleanups (old_chain); | |
f7545552 | 1024 | xfree (local_addr); |
c906108c SS |
1025 | } |
1026 | ||
1027 | /* Perform required actions after either reading in the initial | |
1028 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1029 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1030 | |
c906108c | 1031 | void |
7eedccfa | 1032 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c | 1033 | { |
c906108c | 1034 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1035 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1036 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1037 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1038 | { |
1039 | /* OK, make it the "real" symbol file. */ | |
1040 | symfile_objfile = objfile; | |
1041 | ||
c1e56572 | 1042 | clear_symtab_users (add_flags); |
c906108c | 1043 | } |
7eedccfa | 1044 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1045 | { |
69de3c6a | 1046 | breakpoint_re_set (); |
c906108c SS |
1047 | } |
1048 | ||
1049 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 1050 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
1051 | } |
1052 | ||
1053 | /* Process a symbol file, as either the main file or as a dynamically | |
1054 | loaded file. | |
1055 | ||
5417f6dc RM |
1056 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
1057 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 1058 | |
7eedccfa PP |
1059 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1060 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
1061 | |
1062 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
1063 | syms_from_objfile, above. |
1064 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 1065 | |
63524580 JK |
1066 | PARENT is the original objfile if ABFD is a separate debug info file. |
1067 | Otherwise PARENT is NULL. | |
1068 | ||
c906108c | 1069 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1070 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1071 | |
7904e09f | 1072 | static struct objfile * |
7eedccfa PP |
1073 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
1074 | int add_flags, | |
7904e09f JB |
1075 | struct section_addr_info *addrs, |
1076 | struct section_offsets *offsets, | |
1077 | int num_offsets, | |
63524580 | 1078 | int flags, struct objfile *parent) |
c906108c SS |
1079 | { |
1080 | struct objfile *objfile; | |
a39a16c4 | 1081 | struct cleanup *my_cleanups; |
5417f6dc | 1082 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 1083 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
b11896a5 TT |
1084 | const int should_print = ((from_tty || info_verbose) |
1085 | && (readnow_symbol_files | |
1086 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1087 | |
9291a0cd | 1088 | if (readnow_symbol_files) |
b11896a5 TT |
1089 | { |
1090 | flags |= OBJF_READNOW; | |
1091 | add_flags &= ~SYMFILE_NO_READ; | |
1092 | } | |
9291a0cd | 1093 | |
5417f6dc | 1094 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 1095 | |
5417f6dc RM |
1096 | /* Give user a chance to burp if we'd be |
1097 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1098 | |
1099 | if ((have_full_symbols () || have_partial_symbols ()) | |
7eedccfa | 1100 | && (add_flags & SYMFILE_MAINLINE) |
c906108c | 1101 | && from_tty |
9e2f0ad4 | 1102 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1103 | error (_("Not confirmed.")); |
c906108c | 1104 | |
2df3850c | 1105 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 1106 | discard_cleanups (my_cleanups); |
c906108c | 1107 | |
63524580 JK |
1108 | if (parent) |
1109 | add_separate_debug_objfile (objfile, parent); | |
1110 | ||
78a4a9b9 AC |
1111 | /* We either created a new mapped symbol table, mapped an existing |
1112 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1113 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1114 | if (should_print) |
c906108c | 1115 | { |
769d7dc4 AC |
1116 | if (deprecated_pre_add_symbol_hook) |
1117 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1118 | else |
c906108c | 1119 | { |
55333a84 DE |
1120 | printf_unfiltered (_("Reading symbols from %s..."), name); |
1121 | wrap_here (""); | |
1122 | gdb_flush (gdb_stdout); | |
c906108c | 1123 | } |
c906108c | 1124 | } |
78a4a9b9 | 1125 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1126 | add_flags); |
c906108c SS |
1127 | |
1128 | /* We now have at least a partial symbol table. Check to see if the | |
1129 | user requested that all symbols be read on initial access via either | |
1130 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1131 | all partial symbol tables for this objfile if so. */ |
c906108c | 1132 | |
9291a0cd | 1133 | if ((flags & OBJF_READNOW)) |
c906108c | 1134 | { |
b11896a5 | 1135 | if (should_print) |
c906108c | 1136 | { |
a3f17187 | 1137 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1138 | wrap_here (""); |
1139 | gdb_flush (gdb_stdout); | |
1140 | } | |
1141 | ||
ccefe4c4 TT |
1142 | if (objfile->sf) |
1143 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1144 | } |
1145 | ||
b11896a5 | 1146 | if (should_print && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1147 | { |
1148 | wrap_here (""); | |
55333a84 | 1149 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1150 | wrap_here (""); |
1151 | } | |
1152 | ||
b11896a5 | 1153 | if (should_print) |
c906108c | 1154 | { |
769d7dc4 AC |
1155 | if (deprecated_post_add_symbol_hook) |
1156 | deprecated_post_add_symbol_hook (); | |
c906108c | 1157 | else |
55333a84 | 1158 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1159 | } |
1160 | ||
481d0f41 JB |
1161 | /* We print some messages regardless of whether 'from_tty || |
1162 | info_verbose' is true, so make sure they go out at the right | |
1163 | time. */ | |
1164 | gdb_flush (gdb_stdout); | |
1165 | ||
a39a16c4 MM |
1166 | do_cleanups (my_cleanups); |
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 | ||
1313 | static int | |
287ccc17 | 1314 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1315 | struct objfile *parent_objfile) |
5b5d99cf JB |
1316 | { |
1317 | unsigned long file_crc = 0; | |
f1838a98 | 1318 | bfd *abfd; |
777ea8f1 | 1319 | gdb_byte buffer[8*1024]; |
5b5d99cf | 1320 | int count; |
32a0e547 JK |
1321 | struct stat parent_stat, abfd_stat; |
1322 | ||
1323 | /* Find a separate debug info file as if symbols would be present in | |
1324 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1325 | section can contain just the basename of PARENT_OBJFILE without any | |
1326 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1327 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1328 | |
0ba1096a | 1329 | if (filename_cmp (name, parent_objfile->name) == 0) |
32a0e547 | 1330 | return 0; |
5b5d99cf | 1331 | |
874f5765 | 1332 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1333 | |
1334 | if (!abfd) | |
5b5d99cf JB |
1335 | return 0; |
1336 | ||
0ba1096a | 1337 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1338 | |
1339 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1340 | st_ino; they always set it to zero. (Windows does provide a | |
1341 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1342 | case. While there is no guarantee that a system that provides | |
1343 | meaningful inode numbers will never set st_ino to zero, this is | |
1344 | merely an optimization, so we do not need to worry about false | |
1345 | negatives. */ | |
1346 | ||
1347 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
1348 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0 | |
1349 | && abfd_stat.st_dev == parent_stat.st_dev | |
1350 | && abfd_stat.st_ino == parent_stat.st_ino | |
1351 | && abfd_stat.st_ino != 0) | |
1352 | { | |
1353 | bfd_close (abfd); | |
1354 | return 0; | |
1355 | } | |
1356 | ||
f1838a98 | 1357 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1358 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1359 | ||
f1838a98 | 1360 | bfd_close (abfd); |
5b5d99cf | 1361 | |
287ccc17 JK |
1362 | if (crc != file_crc) |
1363 | { | |
1364 | warning (_("the debug information found in \"%s\"" | |
1365 | " does not match \"%s\" (CRC mismatch).\n"), | |
32a0e547 | 1366 | name, parent_objfile->name); |
287ccc17 JK |
1367 | return 0; |
1368 | } | |
1369 | ||
1370 | return 1; | |
5b5d99cf JB |
1371 | } |
1372 | ||
aa28a74e | 1373 | char *debug_file_directory = NULL; |
920d2a44 AC |
1374 | static void |
1375 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1376 | struct cmd_list_element *c, const char *value) | |
1377 | { | |
3e43a32a MS |
1378 | fprintf_filtered (file, |
1379 | _("The directory where separate debug " | |
1380 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1381 | value); |
1382 | } | |
5b5d99cf JB |
1383 | |
1384 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1385 | #define DEBUG_SUBDIRECTORY ".debug" | |
1386 | #endif | |
1387 | ||
9cce227f TG |
1388 | char * |
1389 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1390 | { | |
952a6d41 | 1391 | char *basename, *debugdir; |
9cce227f TG |
1392 | char *dir = NULL; |
1393 | char *debugfile = NULL; | |
1394 | char *canon_name = NULL; | |
9cce227f TG |
1395 | unsigned long crc32; |
1396 | int i; | |
5b5d99cf JB |
1397 | |
1398 | basename = get_debug_link_info (objfile, &crc32); | |
1399 | ||
1400 | if (basename == NULL) | |
287ccc17 JK |
1401 | /* There's no separate debug info, hence there's no way we could |
1402 | load it => no warning. */ | |
25522fae | 1403 | goto cleanup_return_debugfile; |
5417f6dc | 1404 | |
5b5d99cf JB |
1405 | dir = xstrdup (objfile->name); |
1406 | ||
fe36c4f4 | 1407 | /* Strip off the final filename part, leaving the directory name, |
569b05a5 | 1408 | followed by a slash. The directory can be relative or absolute. */ |
5b5d99cf JB |
1409 | for (i = strlen(dir) - 1; i >= 0; i--) |
1410 | { | |
1411 | if (IS_DIR_SEPARATOR (dir[i])) | |
1412 | break; | |
1413 | } | |
569b05a5 | 1414 | /* If I is -1 then no directory is present there and DIR will be "". */ |
5b5d99cf | 1415 | dir[i+1] = '\0'; |
5417f6dc | 1416 | |
c378eb4e | 1417 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1ffa32ee JK |
1418 | canon_name = lrealpath (dir); |
1419 | i = strlen (dir); | |
1420 | if (canon_name && strlen (canon_name) > i) | |
1421 | i = strlen (canon_name); | |
1422 | ||
25522fae JK |
1423 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1424 | + i | |
1425 | + strlen (DEBUG_SUBDIRECTORY) | |
1426 | + strlen ("/") | |
1427 | + strlen (basename) | |
1428 | + 1); | |
5b5d99cf JB |
1429 | |
1430 | /* First try in the same directory as the original file. */ | |
1431 | strcpy (debugfile, dir); | |
1432 | strcat (debugfile, basename); | |
1433 | ||
32a0e547 | 1434 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1435 | goto cleanup_return_debugfile; |
5417f6dc | 1436 | |
5b5d99cf JB |
1437 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1438 | strcpy (debugfile, dir); | |
1439 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1440 | strcat (debugfile, "/"); | |
1441 | strcat (debugfile, basename); | |
1442 | ||
32a0e547 | 1443 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1444 | goto cleanup_return_debugfile; |
5417f6dc | 1445 | |
24ddea62 JK |
1446 | /* Then try in the global debugfile directories. |
1447 | ||
1448 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1449 | cause "/..." lookups. */ | |
5417f6dc | 1450 | |
24ddea62 JK |
1451 | debugdir = debug_file_directory; |
1452 | do | |
aa28a74e | 1453 | { |
24ddea62 JK |
1454 | char *debugdir_end; |
1455 | ||
1456 | while (*debugdir == DIRNAME_SEPARATOR) | |
1457 | debugdir++; | |
1458 | ||
1459 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1460 | if (debugdir_end == NULL) | |
1461 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1462 | ||
1463 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1464 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1465 | strcat (debugfile, "/"); |
24ddea62 | 1466 | strcat (debugfile, dir); |
aa28a74e DJ |
1467 | strcat (debugfile, basename); |
1468 | ||
32a0e547 | 1469 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1470 | goto cleanup_return_debugfile; |
24ddea62 JK |
1471 | |
1472 | /* If the file is in the sysroot, try using its base path in the | |
1473 | global debugfile directory. */ | |
1474 | if (canon_name | |
0ba1096a KT |
1475 | && filename_ncmp (canon_name, gdb_sysroot, |
1476 | strlen (gdb_sysroot)) == 0 | |
24ddea62 JK |
1477 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) |
1478 | { | |
1479 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1480 | debugfile[debugdir_end - debugdir] = 0; | |
1481 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1482 | strcat (debugfile, "/"); | |
1483 | strcat (debugfile, basename); | |
1484 | ||
32a0e547 | 1485 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
24ddea62 JK |
1486 | goto cleanup_return_debugfile; |
1487 | } | |
1488 | ||
1489 | debugdir = debugdir_end; | |
aa28a74e | 1490 | } |
24ddea62 | 1491 | while (*debugdir != 0); |
aa28a74e | 1492 | |
25522fae JK |
1493 | xfree (debugfile); |
1494 | debugfile = NULL; | |
aa28a74e | 1495 | |
25522fae JK |
1496 | cleanup_return_debugfile: |
1497 | xfree (canon_name); | |
5b5d99cf JB |
1498 | xfree (basename); |
1499 | xfree (dir); | |
25522fae | 1500 | return debugfile; |
5b5d99cf JB |
1501 | } |
1502 | ||
1503 | ||
c906108c SS |
1504 | /* This is the symbol-file command. Read the file, analyze its |
1505 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1506 | the command is rather bizarre: |
1507 | ||
1508 | 1. The function buildargv implements various quoting conventions | |
1509 | which are undocumented and have little or nothing in common with | |
1510 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1511 | ||
1512 | 2. Options are used, which are not generally used in GDB (perhaps | |
1513 | "set mapped on", "set readnow on" would be better) | |
1514 | ||
1515 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1516 | conventions (because it is confusing and inconvenient). */ |
1517 | ||
1518 | void | |
fba45db2 | 1519 | symbol_file_command (char *args, int from_tty) |
c906108c | 1520 | { |
c906108c SS |
1521 | dont_repeat (); |
1522 | ||
1523 | if (args == NULL) | |
1524 | { | |
1adeb98a | 1525 | symbol_file_clear (from_tty); |
c906108c SS |
1526 | } |
1527 | else | |
1528 | { | |
d1a41061 | 1529 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1530 | int flags = OBJF_USERLOADED; |
1531 | struct cleanup *cleanups; | |
1532 | char *name = NULL; | |
1533 | ||
7a292a7a | 1534 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1535 | while (*argv != NULL) |
1536 | { | |
78a4a9b9 AC |
1537 | if (strcmp (*argv, "-readnow") == 0) |
1538 | flags |= OBJF_READNOW; | |
1539 | else if (**argv == '-') | |
8a3fe4f8 | 1540 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1541 | else |
1542 | { | |
cb2f3a29 | 1543 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1544 | name = *argv; |
78a4a9b9 | 1545 | } |
cb2f3a29 | 1546 | |
c906108c SS |
1547 | argv++; |
1548 | } | |
1549 | ||
1550 | if (name == NULL) | |
cb2f3a29 MK |
1551 | error (_("no symbol file name was specified")); |
1552 | ||
c906108c SS |
1553 | do_cleanups (cleanups); |
1554 | } | |
1555 | } | |
1556 | ||
1557 | /* Set the initial language. | |
1558 | ||
cb2f3a29 MK |
1559 | FIXME: A better solution would be to record the language in the |
1560 | psymtab when reading partial symbols, and then use it (if known) to | |
1561 | set the language. This would be a win for formats that encode the | |
1562 | language in an easily discoverable place, such as DWARF. For | |
1563 | stabs, we can jump through hoops looking for specially named | |
1564 | symbols or try to intuit the language from the specific type of | |
1565 | stabs we find, but we can't do that until later when we read in | |
1566 | full symbols. */ | |
c906108c | 1567 | |
8b60591b | 1568 | void |
fba45db2 | 1569 | set_initial_language (void) |
c906108c | 1570 | { |
c5aa993b | 1571 | enum language lang = language_unknown; |
c906108c | 1572 | |
01f8c46d JK |
1573 | if (language_of_main != language_unknown) |
1574 | lang = language_of_main; | |
1575 | else | |
1576 | { | |
1577 | const char *filename; | |
1578 | ||
1579 | filename = find_main_filename (); | |
1580 | if (filename != NULL) | |
1581 | lang = deduce_language_from_filename (filename); | |
1582 | } | |
cb2f3a29 | 1583 | |
ccefe4c4 TT |
1584 | if (lang == language_unknown) |
1585 | { | |
1586 | /* Make C the default language */ | |
1587 | lang = language_c; | |
c906108c | 1588 | } |
ccefe4c4 TT |
1589 | |
1590 | set_language (lang); | |
1591 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1592 | } |
1593 | ||
874f5765 TG |
1594 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1595 | open it normally. */ | |
1596 | ||
1597 | bfd * | |
1598 | bfd_open_maybe_remote (const char *name) | |
1599 | { | |
1600 | if (remote_filename_p (name)) | |
1601 | return remote_bfd_open (name, gnutarget); | |
1602 | else | |
1603 | return bfd_openr (name, gnutarget); | |
1604 | } | |
1605 | ||
1606 | ||
cb2f3a29 MK |
1607 | /* Open the file specified by NAME and hand it off to BFD for |
1608 | preliminary analysis. Return a newly initialized bfd *, which | |
1609 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1610 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1611 | |
1612 | bfd * | |
fba45db2 | 1613 | symfile_bfd_open (char *name) |
c906108c SS |
1614 | { |
1615 | bfd *sym_bfd; | |
1616 | int desc; | |
1617 | char *absolute_name; | |
1618 | ||
f1838a98 UW |
1619 | if (remote_filename_p (name)) |
1620 | { | |
1621 | name = xstrdup (name); | |
1622 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1623 | if (!sym_bfd) | |
1624 | { | |
1625 | make_cleanup (xfree, name); | |
1626 | error (_("`%s': can't open to read symbols: %s."), name, | |
1627 | bfd_errmsg (bfd_get_error ())); | |
1628 | } | |
1629 | ||
1630 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1631 | { | |
1632 | bfd_close (sym_bfd); | |
1633 | make_cleanup (xfree, name); | |
1634 | error (_("`%s': can't read symbols: %s."), name, | |
1635 | bfd_errmsg (bfd_get_error ())); | |
1636 | } | |
1637 | ||
1638 | return sym_bfd; | |
1639 | } | |
1640 | ||
cb2f3a29 | 1641 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1642 | |
1643 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1644 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1645 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1646 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1647 | if (desc < 0) |
1648 | { | |
1649 | char *exename = alloca (strlen (name) + 5); | |
433759f7 | 1650 | |
c906108c | 1651 | strcat (strcpy (exename, name), ".exe"); |
014d698b | 1652 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1653 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1654 | } |
1655 | #endif | |
1656 | if (desc < 0) | |
1657 | { | |
b8c9b27d | 1658 | make_cleanup (xfree, name); |
c906108c SS |
1659 | perror_with_name (name); |
1660 | } | |
cb2f3a29 MK |
1661 | |
1662 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
c378eb4e | 1663 | bfd. It'll be freed in free_objfile(). */ |
cb2f3a29 MK |
1664 | xfree (name); |
1665 | name = absolute_name; | |
c906108c | 1666 | |
9f76c2cd | 1667 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1668 | if (!sym_bfd) |
1669 | { | |
1670 | close (desc); | |
b8c9b27d | 1671 | make_cleanup (xfree, name); |
f1838a98 | 1672 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1673 | bfd_errmsg (bfd_get_error ())); |
1674 | } | |
549c1eea | 1675 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1676 | |
1677 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1678 | { | |
cb2f3a29 MK |
1679 | /* FIXME: should be checking for errors from bfd_close (for one |
1680 | thing, on error it does not free all the storage associated | |
1681 | with the bfd). */ | |
1682 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1683 | make_cleanup (xfree, name); |
f1838a98 | 1684 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1685 | bfd_errmsg (bfd_get_error ())); |
1686 | } | |
cb2f3a29 | 1687 | |
4f6f9936 JK |
1688 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1689 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1690 | ||
cb2f3a29 | 1691 | return sym_bfd; |
c906108c SS |
1692 | } |
1693 | ||
cb2f3a29 MK |
1694 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1695 | the section was not found. */ | |
1696 | ||
0e931cf0 JB |
1697 | int |
1698 | get_section_index (struct objfile *objfile, char *section_name) | |
1699 | { | |
1700 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1701 | |
0e931cf0 JB |
1702 | if (sect) |
1703 | return sect->index; | |
1704 | else | |
1705 | return -1; | |
1706 | } | |
1707 | ||
cb2f3a29 MK |
1708 | /* Link SF into the global symtab_fns list. Called on startup by the |
1709 | _initialize routine in each object file format reader, to register | |
b021a221 | 1710 | information about each format the reader is prepared to handle. */ |
c906108c SS |
1711 | |
1712 | void | |
00b5771c | 1713 | add_symtab_fns (const struct sym_fns *sf) |
c906108c | 1714 | { |
00b5771c | 1715 | VEC_safe_push (sym_fns_ptr, symtab_fns, sf); |
c906108c SS |
1716 | } |
1717 | ||
cb2f3a29 MK |
1718 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1719 | either returns or calls error(). The result is an initialized | |
1720 | struct sym_fns in the objfile structure, that contains cached | |
1721 | information about the symbol file. */ | |
c906108c | 1722 | |
00b5771c | 1723 | static const struct sym_fns * |
31d99776 | 1724 | find_sym_fns (bfd *abfd) |
c906108c | 1725 | { |
00b5771c | 1726 | const struct sym_fns *sf; |
31d99776 | 1727 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
00b5771c | 1728 | int i; |
c906108c | 1729 | |
75245b24 MS |
1730 | if (our_flavour == bfd_target_srec_flavour |
1731 | || our_flavour == bfd_target_ihex_flavour | |
1732 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1733 | return NULL; /* No symbols. */ |
75245b24 | 1734 | |
00b5771c | 1735 | for (i = 0; VEC_iterate (sym_fns_ptr, symtab_fns, i, sf); ++i) |
31d99776 DJ |
1736 | if (our_flavour == sf->sym_flavour) |
1737 | return sf; | |
cb2f3a29 | 1738 | |
8a3fe4f8 | 1739 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1740 | bfd_get_target (abfd)); |
c906108c SS |
1741 | } |
1742 | \f | |
cb2f3a29 | 1743 | |
c906108c SS |
1744 | /* This function runs the load command of our current target. */ |
1745 | ||
1746 | static void | |
fba45db2 | 1747 | load_command (char *arg, int from_tty) |
c906108c | 1748 | { |
e5cc9f32 JB |
1749 | dont_repeat (); |
1750 | ||
4487aabf PA |
1751 | /* The user might be reloading because the binary has changed. Take |
1752 | this opportunity to check. */ | |
1753 | reopen_exec_file (); | |
1754 | reread_symbols (); | |
1755 | ||
c906108c | 1756 | if (arg == NULL) |
1986bccd AS |
1757 | { |
1758 | char *parg; | |
1759 | int count = 0; | |
1760 | ||
1761 | parg = arg = get_exec_file (1); | |
1762 | ||
1763 | /* Count how many \ " ' tab space there are in the name. */ | |
1764 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1765 | { | |
1766 | parg++; | |
1767 | count++; | |
1768 | } | |
1769 | ||
1770 | if (count) | |
1771 | { | |
1772 | /* We need to quote this string so buildargv can pull it apart. */ | |
1773 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1774 | char *ptemp = temp; | |
1775 | char *prev; | |
1776 | ||
1777 | make_cleanup (xfree, temp); | |
1778 | ||
1779 | prev = parg = arg; | |
1780 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1781 | { | |
1782 | strncpy (ptemp, prev, parg - prev); | |
1783 | ptemp += parg - prev; | |
1784 | prev = parg++; | |
1785 | *ptemp++ = '\\'; | |
1786 | } | |
1787 | strcpy (ptemp, prev); | |
1788 | ||
1789 | arg = temp; | |
1790 | } | |
1791 | } | |
1792 | ||
c906108c | 1793 | target_load (arg, from_tty); |
2889e661 JB |
1794 | |
1795 | /* After re-loading the executable, we don't really know which | |
1796 | overlays are mapped any more. */ | |
1797 | overlay_cache_invalid = 1; | |
c906108c SS |
1798 | } |
1799 | ||
1800 | /* This version of "load" should be usable for any target. Currently | |
1801 | it is just used for remote targets, not inftarg.c or core files, | |
1802 | on the theory that only in that case is it useful. | |
1803 | ||
1804 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1805 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1806 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1807 | performance compares. */ | |
917317f4 | 1808 | |
917317f4 JM |
1809 | static int validate_download = 0; |
1810 | ||
e4f9b4d5 MS |
1811 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1812 | ||
1813 | static void | |
1814 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1815 | { | |
1816 | bfd_size_type *sum = data; | |
1817 | ||
2c500098 | 1818 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1819 | } |
1820 | ||
1821 | /* Opaque data for load_section_callback. */ | |
1822 | struct load_section_data { | |
1823 | unsigned long load_offset; | |
a76d924d DJ |
1824 | struct load_progress_data *progress_data; |
1825 | VEC(memory_write_request_s) *requests; | |
1826 | }; | |
1827 | ||
1828 | /* Opaque data for load_progress. */ | |
1829 | struct load_progress_data { | |
1830 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1831 | unsigned long write_count; |
1832 | unsigned long data_count; | |
1833 | bfd_size_type total_size; | |
a76d924d DJ |
1834 | }; |
1835 | ||
1836 | /* Opaque data for load_progress for a single section. */ | |
1837 | struct load_progress_section_data { | |
1838 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1839 | |
a76d924d | 1840 | /* Per-section data. */ |
cf7a04e8 DJ |
1841 | const char *section_name; |
1842 | ULONGEST section_sent; | |
1843 | ULONGEST section_size; | |
1844 | CORE_ADDR lma; | |
1845 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1846 | }; |
1847 | ||
a76d924d | 1848 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1849 | |
1850 | static void | |
1851 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1852 | { | |
a76d924d DJ |
1853 | struct load_progress_section_data *args = untyped_arg; |
1854 | struct load_progress_data *totals; | |
1855 | ||
1856 | if (args == NULL) | |
1857 | /* Writing padding data. No easy way to get at the cumulative | |
1858 | stats, so just ignore this. */ | |
1859 | return; | |
1860 | ||
1861 | totals = args->cumulative; | |
1862 | ||
1863 | if (bytes == 0 && args->section_sent == 0) | |
1864 | { | |
1865 | /* The write is just starting. Let the user know we've started | |
1866 | this section. */ | |
79a45e25 | 1867 | ui_out_message (current_uiout, 0, "Loading section %s, size %s lma %s\n", |
5af949e3 UW |
1868 | args->section_name, hex_string (args->section_size), |
1869 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1870 | return; |
1871 | } | |
cf7a04e8 DJ |
1872 | |
1873 | if (validate_download) | |
1874 | { | |
1875 | /* Broken memories and broken monitors manifest themselves here | |
1876 | when bring new computers to life. This doubles already slow | |
1877 | downloads. */ | |
1878 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1879 | might add a verify_memory() method to the target vector and | |
1880 | then use that. remote.c could implement that method using | |
1881 | the ``qCRC'' packet. */ | |
1882 | gdb_byte *check = xmalloc (bytes); | |
1883 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1884 | ||
1885 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1886 | error (_("Download verify read failed at %s"), |
1887 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1888 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1889 | error (_("Download verify compare failed at %s"), |
1890 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1891 | do_cleanups (verify_cleanups); |
1892 | } | |
a76d924d | 1893 | totals->data_count += bytes; |
cf7a04e8 DJ |
1894 | args->lma += bytes; |
1895 | args->buffer += bytes; | |
a76d924d | 1896 | totals->write_count += 1; |
cf7a04e8 DJ |
1897 | args->section_sent += bytes; |
1898 | if (quit_flag | |
1899 | || (deprecated_ui_load_progress_hook != NULL | |
1900 | && deprecated_ui_load_progress_hook (args->section_name, | |
1901 | args->section_sent))) | |
1902 | error (_("Canceled the download")); | |
1903 | ||
1904 | if (deprecated_show_load_progress != NULL) | |
1905 | deprecated_show_load_progress (args->section_name, | |
1906 | args->section_sent, | |
1907 | args->section_size, | |
a76d924d DJ |
1908 | totals->data_count, |
1909 | totals->total_size); | |
cf7a04e8 DJ |
1910 | } |
1911 | ||
e4f9b4d5 MS |
1912 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1913 | ||
1914 | static void | |
1915 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1916 | { | |
a76d924d | 1917 | struct memory_write_request *new_request; |
e4f9b4d5 | 1918 | struct load_section_data *args = data; |
a76d924d | 1919 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1920 | bfd_size_type size = bfd_get_section_size (asec); |
1921 | gdb_byte *buffer; | |
cf7a04e8 | 1922 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1923 | |
cf7a04e8 DJ |
1924 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1925 | return; | |
e4f9b4d5 | 1926 | |
cf7a04e8 DJ |
1927 | if (size == 0) |
1928 | return; | |
e4f9b4d5 | 1929 | |
a76d924d DJ |
1930 | new_request = VEC_safe_push (memory_write_request_s, |
1931 | args->requests, NULL); | |
1932 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1933 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1934 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
3e43a32a MS |
1935 | new_request->end = new_request->begin + size; /* FIXME Should size |
1936 | be in instead? */ | |
a76d924d DJ |
1937 | new_request->data = xmalloc (size); |
1938 | new_request->baton = section_data; | |
cf7a04e8 | 1939 | |
a76d924d | 1940 | buffer = new_request->data; |
cf7a04e8 | 1941 | |
a76d924d DJ |
1942 | section_data->cumulative = args->progress_data; |
1943 | section_data->section_name = sect_name; | |
1944 | section_data->section_size = size; | |
1945 | section_data->lma = new_request->begin; | |
1946 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1947 | |
1948 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1949 | } |
1950 | ||
1951 | /* Clean up an entire memory request vector, including load | |
1952 | data and progress records. */ | |
cf7a04e8 | 1953 | |
a76d924d DJ |
1954 | static void |
1955 | clear_memory_write_data (void *arg) | |
1956 | { | |
1957 | VEC(memory_write_request_s) **vec_p = arg; | |
1958 | VEC(memory_write_request_s) *vec = *vec_p; | |
1959 | int i; | |
1960 | struct memory_write_request *mr; | |
cf7a04e8 | 1961 | |
a76d924d DJ |
1962 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1963 | { | |
1964 | xfree (mr->data); | |
1965 | xfree (mr->baton); | |
1966 | } | |
1967 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1968 | } |
1969 | ||
c906108c | 1970 | void |
917317f4 | 1971 | generic_load (char *args, int from_tty) |
c906108c | 1972 | { |
c906108c | 1973 | bfd *loadfile_bfd; |
2b71414d | 1974 | struct timeval start_time, end_time; |
917317f4 | 1975 | char *filename; |
1986bccd | 1976 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1977 | struct load_section_data cbdata; |
a76d924d | 1978 | struct load_progress_data total_progress; |
79a45e25 | 1979 | struct ui_out *uiout = current_uiout; |
a76d924d | 1980 | |
e4f9b4d5 | 1981 | CORE_ADDR entry; |
1986bccd | 1982 | char **argv; |
e4f9b4d5 | 1983 | |
a76d924d DJ |
1984 | memset (&cbdata, 0, sizeof (cbdata)); |
1985 | memset (&total_progress, 0, sizeof (total_progress)); | |
1986 | cbdata.progress_data = &total_progress; | |
1987 | ||
1988 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1989 | |
d1a41061 PP |
1990 | if (args == NULL) |
1991 | error_no_arg (_("file to load")); | |
1986bccd | 1992 | |
d1a41061 | 1993 | argv = gdb_buildargv (args); |
1986bccd AS |
1994 | make_cleanup_freeargv (argv); |
1995 | ||
1996 | filename = tilde_expand (argv[0]); | |
1997 | make_cleanup (xfree, filename); | |
1998 | ||
1999 | if (argv[1] != NULL) | |
917317f4 JM |
2000 | { |
2001 | char *endptr; | |
ba5f2f8a | 2002 | |
1986bccd AS |
2003 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
2004 | ||
2005 | /* If the last word was not a valid number then | |
2006 | treat it as a file name with spaces in. */ | |
2007 | if (argv[1] == endptr) | |
2008 | error (_("Invalid download offset:%s."), argv[1]); | |
2009 | ||
2010 | if (argv[2] != NULL) | |
2011 | error (_("Too many parameters.")); | |
917317f4 | 2012 | } |
c906108c | 2013 | |
c378eb4e | 2014 | /* Open the file for loading. */ |
c906108c SS |
2015 | loadfile_bfd = bfd_openr (filename, gnutarget); |
2016 | if (loadfile_bfd == NULL) | |
2017 | { | |
2018 | perror_with_name (filename); | |
2019 | return; | |
2020 | } | |
917317f4 | 2021 | |
c906108c SS |
2022 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
2023 | on error it does not free all the storage associated with the | |
2024 | bfd). */ | |
5c65bbb6 | 2025 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 2026 | |
c5aa993b | 2027 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 2028 | { |
8a3fe4f8 | 2029 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2030 | bfd_errmsg (bfd_get_error ())); |
2031 | } | |
c5aa993b | 2032 | |
5417f6dc | 2033 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2034 | (void *) &total_progress.total_size); |
2035 | ||
2036 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2037 | |
2b71414d | 2038 | gettimeofday (&start_time, NULL); |
c906108c | 2039 | |
a76d924d DJ |
2040 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2041 | load_progress) != 0) | |
2042 | error (_("Load failed")); | |
c906108c | 2043 | |
2b71414d | 2044 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2045 | |
e4f9b4d5 | 2046 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2047 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2048 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2049 | ui_out_text (uiout, ", load size "); |
a76d924d | 2050 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2051 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2052 | /* We were doing this in remote-mips.c, I suspect it is right |
2053 | for other targets too. */ | |
fb14de7b | 2054 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2055 | |
38963c97 DJ |
2056 | /* Reset breakpoints, now that we have changed the load image. For |
2057 | instance, breakpoints may have been set (or reset, by | |
2058 | post_create_inferior) while connected to the target but before we | |
2059 | loaded the program. In that case, the prologue analyzer could | |
2060 | have read instructions from the target to find the right | |
2061 | breakpoint locations. Loading has changed the contents of that | |
2062 | memory. */ | |
2063 | ||
2064 | breakpoint_re_set (); | |
2065 | ||
7ca9f392 AC |
2066 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2067 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2068 | was commented out), making the call confuses GDB if more than one | |
2069 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2070 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2071 | |
a76d924d DJ |
2072 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2073 | total_progress.write_count, | |
2074 | &start_time, &end_time); | |
c906108c SS |
2075 | |
2076 | do_cleanups (old_cleanups); | |
2077 | } | |
2078 | ||
c378eb4e | 2079 | /* Report how fast the transfer went. */ |
c906108c | 2080 | |
917317f4 JM |
2081 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2082 | replaced by print_transfer_performance (with a very different | |
c378eb4e | 2083 | function signature). */ |
917317f4 | 2084 | |
c906108c | 2085 | void |
fba45db2 KB |
2086 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2087 | time_t end_time) | |
c906108c | 2088 | { |
2b71414d DJ |
2089 | struct timeval start, end; |
2090 | ||
2091 | start.tv_sec = start_time; | |
2092 | start.tv_usec = 0; | |
2093 | end.tv_sec = end_time; | |
2094 | end.tv_usec = 0; | |
2095 | ||
2096 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2097 | } |
2098 | ||
2099 | void | |
d9fcf2fb | 2100 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2101 | unsigned long data_count, |
2102 | unsigned long write_count, | |
2b71414d DJ |
2103 | const struct timeval *start_time, |
2104 | const struct timeval *end_time) | |
917317f4 | 2105 | { |
9f43d28c | 2106 | ULONGEST time_count; |
79a45e25 | 2107 | struct ui_out *uiout = current_uiout; |
2b71414d DJ |
2108 | |
2109 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2110 | accuracy and overflow. */ | |
2111 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2112 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2113 | ||
8b93c638 JM |
2114 | ui_out_text (uiout, "Transfer rate: "); |
2115 | if (time_count > 0) | |
2116 | { | |
9f43d28c DJ |
2117 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2118 | ||
2119 | if (ui_out_is_mi_like_p (uiout)) | |
2120 | { | |
2121 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2122 | ui_out_text (uiout, " bits/sec"); | |
2123 | } | |
2124 | else if (rate < 1024) | |
2125 | { | |
2126 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2127 | ui_out_text (uiout, " bytes/sec"); | |
2128 | } | |
2129 | else | |
2130 | { | |
2131 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2132 | ui_out_text (uiout, " KB/sec"); | |
2133 | } | |
8b93c638 JM |
2134 | } |
2135 | else | |
2136 | { | |
ba5f2f8a | 2137 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2138 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2139 | } |
2140 | if (write_count > 0) | |
2141 | { | |
2142 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2143 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2144 | ui_out_text (uiout, " bytes/write"); |
2145 | } | |
2146 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2147 | } |
2148 | ||
2149 | /* This function allows the addition of incrementally linked object files. | |
2150 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2151 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2152 | special case syntax for the rombug target (Rombug is the boot | |
2153 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2154 | rombug case, the user doesn't need to supply a text address, | |
2155 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2156 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2157 | |
c906108c | 2158 | static void |
fba45db2 | 2159 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2160 | { |
5af949e3 | 2161 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2162 | char *filename = NULL; |
2df3850c | 2163 | int flags = OBJF_USERLOADED; |
c906108c | 2164 | char *arg; |
db162d44 | 2165 | int section_index = 0; |
2acceee2 JM |
2166 | int argcnt = 0; |
2167 | int sec_num = 0; | |
2168 | int i; | |
db162d44 EZ |
2169 | int expecting_sec_name = 0; |
2170 | int expecting_sec_addr = 0; | |
5b96932b | 2171 | char **argv; |
db162d44 | 2172 | |
a39a16c4 | 2173 | struct sect_opt |
2acceee2 | 2174 | { |
2acceee2 JM |
2175 | char *name; |
2176 | char *value; | |
a39a16c4 | 2177 | }; |
db162d44 | 2178 | |
a39a16c4 MM |
2179 | struct section_addr_info *section_addrs; |
2180 | struct sect_opt *sect_opts = NULL; | |
2181 | size_t num_sect_opts = 0; | |
3017564a | 2182 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2183 | |
a39a16c4 | 2184 | num_sect_opts = 16; |
5417f6dc | 2185 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2186 | * sizeof (struct sect_opt)); |
2187 | ||
c906108c SS |
2188 | dont_repeat (); |
2189 | ||
2190 | if (args == NULL) | |
8a3fe4f8 | 2191 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2192 | |
d1a41061 | 2193 | argv = gdb_buildargv (args); |
5b96932b | 2194 | make_cleanup_freeargv (argv); |
db162d44 | 2195 | |
5b96932b AS |
2196 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2197 | { | |
c378eb4e | 2198 | /* Process the argument. */ |
db162d44 | 2199 | if (argcnt == 0) |
c906108c | 2200 | { |
c378eb4e | 2201 | /* The first argument is the file name. */ |
db162d44 | 2202 | filename = tilde_expand (arg); |
3017564a | 2203 | make_cleanup (xfree, filename); |
c906108c | 2204 | } |
db162d44 | 2205 | else |
7a78ae4e ND |
2206 | if (argcnt == 1) |
2207 | { | |
2208 | /* The second argument is always the text address at which | |
c378eb4e | 2209 | to load the program. */ |
7a78ae4e ND |
2210 | sect_opts[section_index].name = ".text"; |
2211 | sect_opts[section_index].value = arg; | |
f414f22f | 2212 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2213 | { |
2214 | num_sect_opts *= 2; | |
5417f6dc | 2215 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2216 | xrealloc (sect_opts, |
5417f6dc | 2217 | num_sect_opts |
a39a16c4 MM |
2218 | * sizeof (struct sect_opt))); |
2219 | } | |
7a78ae4e ND |
2220 | } |
2221 | else | |
2222 | { | |
2223 | /* It's an option (starting with '-') or it's an argument | |
c378eb4e | 2224 | to an option. */ |
7a78ae4e ND |
2225 | |
2226 | if (*arg == '-') | |
2227 | { | |
78a4a9b9 AC |
2228 | if (strcmp (arg, "-readnow") == 0) |
2229 | flags |= OBJF_READNOW; | |
2230 | else if (strcmp (arg, "-s") == 0) | |
2231 | { | |
2232 | expecting_sec_name = 1; | |
2233 | expecting_sec_addr = 1; | |
2234 | } | |
7a78ae4e ND |
2235 | } |
2236 | else | |
2237 | { | |
2238 | if (expecting_sec_name) | |
db162d44 | 2239 | { |
7a78ae4e ND |
2240 | sect_opts[section_index].name = arg; |
2241 | expecting_sec_name = 0; | |
db162d44 EZ |
2242 | } |
2243 | else | |
7a78ae4e ND |
2244 | if (expecting_sec_addr) |
2245 | { | |
2246 | sect_opts[section_index].value = arg; | |
2247 | expecting_sec_addr = 0; | |
f414f22f | 2248 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2249 | { |
2250 | num_sect_opts *= 2; | |
5417f6dc | 2251 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2252 | xrealloc (sect_opts, |
5417f6dc | 2253 | num_sect_opts |
a39a16c4 MM |
2254 | * sizeof (struct sect_opt))); |
2255 | } | |
7a78ae4e ND |
2256 | } |
2257 | else | |
3e43a32a MS |
2258 | error (_("USAGE: add-symbol-file <filename> <textaddress>" |
2259 | " [-mapped] [-readnow] [-s <secname> <addr>]*")); | |
7a78ae4e ND |
2260 | } |
2261 | } | |
c906108c | 2262 | } |
c906108c | 2263 | |
927890d0 JB |
2264 | /* This command takes at least two arguments. The first one is a |
2265 | filename, and the second is the address where this file has been | |
2266 | loaded. Abort now if this address hasn't been provided by the | |
2267 | user. */ | |
2268 | if (section_index < 1) | |
2269 | error (_("The address where %s has been loaded is missing"), filename); | |
2270 | ||
c378eb4e | 2271 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2272 | a sect_addr_info structure to be passed around to other |
2273 | functions. We have to split this up into separate print | |
bb599908 | 2274 | statements because hex_string returns a local static |
c378eb4e | 2275 | string. */ |
5417f6dc | 2276 | |
a3f17187 | 2277 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2278 | section_addrs = alloc_section_addr_info (section_index); |
2279 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2280 | for (i = 0; i < section_index; i++) |
c906108c | 2281 | { |
db162d44 EZ |
2282 | CORE_ADDR addr; |
2283 | char *val = sect_opts[i].value; | |
2284 | char *sec = sect_opts[i].name; | |
5417f6dc | 2285 | |
ae822768 | 2286 | addr = parse_and_eval_address (val); |
db162d44 | 2287 | |
db162d44 | 2288 | /* Here we store the section offsets in the order they were |
c378eb4e | 2289 | entered on the command line. */ |
a39a16c4 MM |
2290 | section_addrs->other[sec_num].name = sec; |
2291 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2292 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2293 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2294 | sec_num++; |
2295 | ||
5417f6dc | 2296 | /* The object's sections are initialized when a |
db162d44 | 2297 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2298 | This happens in reread_symbols. |
db162d44 EZ |
2299 | At this point, we don't know what file type this is, |
2300 | so we can't determine what section names are valid. */ | |
2acceee2 | 2301 | } |
db162d44 | 2302 | |
2acceee2 | 2303 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2304 | error (_("Not confirmed.")); |
c906108c | 2305 | |
7eedccfa PP |
2306 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2307 | section_addrs, flags); | |
c906108c SS |
2308 | |
2309 | /* Getting new symbols may change our opinion about what is | |
2310 | frameless. */ | |
2311 | reinit_frame_cache (); | |
db162d44 | 2312 | do_cleanups (my_cleanups); |
c906108c SS |
2313 | } |
2314 | \f | |
70992597 | 2315 | |
c906108c SS |
2316 | /* Re-read symbols if a symbol-file has changed. */ |
2317 | void | |
fba45db2 | 2318 | reread_symbols (void) |
c906108c SS |
2319 | { |
2320 | struct objfile *objfile; | |
2321 | long new_modtime; | |
2322 | int reread_one = 0; | |
2323 | struct stat new_statbuf; | |
2324 | int res; | |
2325 | ||
2326 | /* With the addition of shared libraries, this should be modified, | |
2327 | the load time should be saved in the partial symbol tables, since | |
2328 | different tables may come from different source files. FIXME. | |
2329 | This routine should then walk down each partial symbol table | |
c378eb4e | 2330 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2331 | |
c5aa993b JM |
2332 | for (objfile = object_files; objfile; objfile = objfile->next) |
2333 | { | |
9cce227f TG |
2334 | /* solib-sunos.c creates one objfile with obfd. */ |
2335 | if (objfile->obfd == NULL) | |
2336 | continue; | |
2337 | ||
2338 | /* Separate debug objfiles are handled in the main objfile. */ | |
2339 | if (objfile->separate_debug_objfile_backlink) | |
2340 | continue; | |
2341 | ||
02aeec7b JB |
2342 | /* If this object is from an archive (what you usually create with |
2343 | `ar', often called a `static library' on most systems, though | |
2344 | a `shared library' on AIX is also an archive), then you should | |
2345 | stat on the archive name, not member name. */ | |
9cce227f TG |
2346 | if (objfile->obfd->my_archive) |
2347 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2348 | else | |
9cce227f TG |
2349 | res = stat (objfile->name, &new_statbuf); |
2350 | if (res != 0) | |
2351 | { | |
c378eb4e | 2352 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
9cce227f TG |
2353 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
2354 | objfile->name); | |
2355 | continue; | |
2356 | } | |
2357 | new_modtime = new_statbuf.st_mtime; | |
2358 | if (new_modtime != objfile->mtime) | |
2359 | { | |
2360 | struct cleanup *old_cleanups; | |
2361 | struct section_offsets *offsets; | |
2362 | int num_offsets; | |
2363 | char *obfd_filename; | |
2364 | ||
2365 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2366 | objfile->name); | |
2367 | ||
2368 | /* There are various functions like symbol_file_add, | |
2369 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2370 | appear to do what we want. But they have various other | |
2371 | effects which we *don't* want. So we just do stuff | |
2372 | ourselves. We don't worry about mapped files (for one thing, | |
2373 | any mapped file will be out of date). */ | |
2374 | ||
2375 | /* If we get an error, blow away this objfile (not sure if | |
2376 | that is the correct response for things like shared | |
2377 | libraries). */ | |
2378 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2379 | /* We need to do this whenever any symbols go away. */ | |
2380 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2381 | ||
0ba1096a KT |
2382 | if (exec_bfd != NULL |
2383 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2384 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2385 | { |
2386 | /* Reload EXEC_BFD without asking anything. */ | |
2387 | ||
2388 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2389 | } | |
2390 | ||
2391 | /* Clean up any state BFD has sitting around. We don't need | |
2392 | to close the descriptor but BFD lacks a way of closing the | |
2393 | BFD without closing the descriptor. */ | |
2394 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2395 | if (!bfd_close (objfile->obfd)) | |
2396 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2397 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2398 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2399 | if (objfile->obfd == NULL) |
2400 | error (_("Can't open %s to read symbols."), objfile->name); | |
2401 | else | |
2402 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2403 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2404 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2405 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2406 | bfd_errmsg (bfd_get_error ())); | |
2407 | ||
2408 | /* Save the offsets, we will nuke them with the rest of the | |
2409 | objfile_obstack. */ | |
2410 | num_offsets = objfile->num_sections; | |
2411 | offsets = ((struct section_offsets *) | |
2412 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2413 | memcpy (offsets, objfile->section_offsets, | |
2414 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2415 | ||
2416 | /* Remove any references to this objfile in the global | |
2417 | value lists. */ | |
2418 | preserve_values (objfile); | |
2419 | ||
2420 | /* Nuke all the state that we will re-read. Much of the following | |
2421 | code which sets things to NULL really is necessary to tell | |
2422 | other parts of GDB that there is nothing currently there. | |
2423 | ||
2424 | Try to keep the freeing order compatible with free_objfile. */ | |
2425 | ||
2426 | if (objfile->sf != NULL) | |
2427 | { | |
2428 | (*objfile->sf->sym_finish) (objfile); | |
2429 | } | |
2430 | ||
2431 | clear_objfile_data (objfile); | |
2432 | ||
15d123c9 | 2433 | /* Free the separate debug objfiles. It will be |
9cce227f | 2434 | automatically recreated by sym_read. */ |
15d123c9 | 2435 | free_objfile_separate_debug (objfile); |
9cce227f TG |
2436 | |
2437 | /* FIXME: Do we have to free a whole linked list, or is this | |
2438 | enough? */ | |
2439 | if (objfile->global_psymbols.list) | |
2440 | xfree (objfile->global_psymbols.list); | |
2441 | memset (&objfile->global_psymbols, 0, | |
2442 | sizeof (objfile->global_psymbols)); | |
2443 | if (objfile->static_psymbols.list) | |
2444 | xfree (objfile->static_psymbols.list); | |
2445 | memset (&objfile->static_psymbols, 0, | |
2446 | sizeof (objfile->static_psymbols)); | |
2447 | ||
c378eb4e | 2448 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2449 | psymbol_bcache_free (objfile->psymbol_cache); |
2450 | objfile->psymbol_cache = psymbol_bcache_init (); | |
9cce227f | 2451 | bcache_xfree (objfile->macro_cache); |
cbd70537 | 2452 | objfile->macro_cache = bcache_xmalloc (NULL, NULL); |
9cce227f | 2453 | bcache_xfree (objfile->filename_cache); |
cbd70537 | 2454 | objfile->filename_cache = bcache_xmalloc (NULL,NULL); |
9cce227f TG |
2455 | if (objfile->demangled_names_hash != NULL) |
2456 | { | |
2457 | htab_delete (objfile->demangled_names_hash); | |
2458 | objfile->demangled_names_hash = NULL; | |
2459 | } | |
2460 | obstack_free (&objfile->objfile_obstack, 0); | |
2461 | objfile->sections = NULL; | |
2462 | objfile->symtabs = NULL; | |
2463 | objfile->psymtabs = NULL; | |
2464 | objfile->psymtabs_addrmap = NULL; | |
2465 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2466 | objfile->template_symbols = NULL; |
9cce227f TG |
2467 | objfile->msymbols = NULL; |
2468 | objfile->deprecated_sym_private = NULL; | |
2469 | objfile->minimal_symbol_count = 0; | |
2470 | memset (&objfile->msymbol_hash, 0, | |
2471 | sizeof (objfile->msymbol_hash)); | |
2472 | memset (&objfile->msymbol_demangled_hash, 0, | |
2473 | sizeof (objfile->msymbol_demangled_hash)); | |
2474 | ||
9cce227f TG |
2475 | /* obstack_init also initializes the obstack so it is |
2476 | empty. We could use obstack_specify_allocation but | |
2477 | gdb_obstack.h specifies the alloc/dealloc | |
2478 | functions. */ | |
2479 | obstack_init (&objfile->objfile_obstack); | |
2480 | if (build_objfile_section_table (objfile)) | |
2481 | { | |
2482 | error (_("Can't find the file sections in `%s': %s"), | |
2483 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2484 | } | |
2485 | terminate_minimal_symbol_table (objfile); | |
2486 | ||
2487 | /* We use the same section offsets as from last time. I'm not | |
2488 | sure whether that is always correct for shared libraries. */ | |
2489 | objfile->section_offsets = (struct section_offsets *) | |
2490 | obstack_alloc (&objfile->objfile_obstack, | |
2491 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2492 | memcpy (objfile->section_offsets, offsets, | |
2493 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2494 | objfile->num_sections = num_offsets; | |
2495 | ||
2496 | /* What the hell is sym_new_init for, anyway? The concept of | |
2497 | distinguishing between the main file and additional files | |
2498 | in this way seems rather dubious. */ | |
2499 | if (objfile == symfile_objfile) | |
c906108c | 2500 | { |
9cce227f | 2501 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2502 | } |
9cce227f TG |
2503 | |
2504 | (*objfile->sf->sym_init) (objfile); | |
2505 | clear_complaints (&symfile_complaints, 1, 1); | |
2506 | /* Do not set flags as this is safe and we don't want to be | |
2507 | verbose. */ | |
2508 | (*objfile->sf->sym_read) (objfile, 0); | |
b11896a5 TT |
2509 | if ((objfile->flags & OBJF_PSYMTABS_READ) != 0) |
2510 | { | |
2511 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
2512 | require_partial_symbols (objfile, 0); | |
2513 | } | |
2514 | ||
9cce227f | 2515 | if (!objfile_has_symbols (objfile)) |
c906108c | 2516 | { |
9cce227f TG |
2517 | wrap_here (""); |
2518 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2519 | wrap_here (""); | |
c5aa993b | 2520 | } |
9cce227f TG |
2521 | |
2522 | /* We're done reading the symbol file; finish off complaints. */ | |
2523 | clear_complaints (&symfile_complaints, 0, 1); | |
2524 | ||
2525 | /* Getting new symbols may change our opinion about what is | |
2526 | frameless. */ | |
2527 | ||
2528 | reinit_frame_cache (); | |
2529 | ||
2530 | /* Discard cleanups as symbol reading was successful. */ | |
2531 | discard_cleanups (old_cleanups); | |
2532 | ||
2533 | /* If the mtime has changed between the time we set new_modtime | |
2534 | and now, we *want* this to be out of date, so don't call stat | |
2535 | again now. */ | |
2536 | objfile->mtime = new_modtime; | |
2537 | reread_one = 1; | |
2538 | init_entry_point_info (objfile); | |
c906108c SS |
2539 | } |
2540 | } | |
c906108c SS |
2541 | |
2542 | if (reread_one) | |
ea53e89f | 2543 | { |
ff3536bc UW |
2544 | /* Notify objfiles that we've modified objfile sections. */ |
2545 | objfiles_changed (); | |
2546 | ||
c1e56572 | 2547 | clear_symtab_users (0); |
ea53e89f JB |
2548 | /* At least one objfile has changed, so we can consider that |
2549 | the executable we're debugging has changed too. */ | |
781b42b0 | 2550 | observer_notify_executable_changed (); |
ea53e89f | 2551 | } |
c906108c | 2552 | } |
c906108c SS |
2553 | \f |
2554 | ||
c5aa993b JM |
2555 | |
2556 | typedef struct | |
2557 | { | |
2558 | char *ext; | |
c906108c | 2559 | enum language lang; |
c5aa993b JM |
2560 | } |
2561 | filename_language; | |
c906108c | 2562 | |
c5aa993b | 2563 | static filename_language *filename_language_table; |
c906108c SS |
2564 | static int fl_table_size, fl_table_next; |
2565 | ||
2566 | static void | |
fba45db2 | 2567 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2568 | { |
2569 | if (fl_table_next >= fl_table_size) | |
2570 | { | |
2571 | fl_table_size += 10; | |
5417f6dc | 2572 | filename_language_table = |
25bf3106 PM |
2573 | xrealloc (filename_language_table, |
2574 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2575 | } |
2576 | ||
4fcf66da | 2577 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2578 | filename_language_table[fl_table_next].lang = lang; |
2579 | fl_table_next++; | |
2580 | } | |
2581 | ||
2582 | static char *ext_args; | |
920d2a44 AC |
2583 | static void |
2584 | show_ext_args (struct ui_file *file, int from_tty, | |
2585 | struct cmd_list_element *c, const char *value) | |
2586 | { | |
3e43a32a MS |
2587 | fprintf_filtered (file, |
2588 | _("Mapping between filename extension " | |
2589 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2590 | value); |
2591 | } | |
c906108c SS |
2592 | |
2593 | static void | |
26c41df3 | 2594 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2595 | { |
2596 | int i; | |
2597 | char *cp = ext_args; | |
2598 | enum language lang; | |
2599 | ||
c378eb4e | 2600 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2601 | if (*cp != '.') |
8a3fe4f8 | 2602 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2603 | |
2604 | /* Find end of first arg. */ | |
c5aa993b | 2605 | while (*cp && !isspace (*cp)) |
c906108c SS |
2606 | cp++; |
2607 | ||
2608 | if (*cp == '\0') | |
3e43a32a MS |
2609 | error (_("'%s': two arguments required -- " |
2610 | "filename extension and language"), | |
c906108c SS |
2611 | ext_args); |
2612 | ||
c378eb4e | 2613 | /* Null-terminate first arg. */ |
c5aa993b | 2614 | *cp++ = '\0'; |
c906108c SS |
2615 | |
2616 | /* Find beginning of second arg, which should be a source language. */ | |
2617 | while (*cp && isspace (*cp)) | |
2618 | cp++; | |
2619 | ||
2620 | if (*cp == '\0') | |
3e43a32a MS |
2621 | error (_("'%s': two arguments required -- " |
2622 | "filename extension and language"), | |
c906108c SS |
2623 | ext_args); |
2624 | ||
2625 | /* Lookup the language from among those we know. */ | |
2626 | lang = language_enum (cp); | |
2627 | ||
2628 | /* Now lookup the filename extension: do we already know it? */ | |
2629 | for (i = 0; i < fl_table_next; i++) | |
2630 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2631 | break; | |
2632 | ||
2633 | if (i >= fl_table_next) | |
2634 | { | |
c378eb4e | 2635 | /* New file extension. */ |
c906108c SS |
2636 | add_filename_language (ext_args, lang); |
2637 | } | |
2638 | else | |
2639 | { | |
c378eb4e | 2640 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2641 | |
2642 | /* if (from_tty) */ | |
2643 | /* query ("Really make files of type %s '%s'?", */ | |
2644 | /* ext_args, language_str (lang)); */ | |
2645 | ||
b8c9b27d | 2646 | xfree (filename_language_table[i].ext); |
4fcf66da | 2647 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2648 | filename_language_table[i].lang = lang; |
2649 | } | |
2650 | } | |
2651 | ||
2652 | static void | |
fba45db2 | 2653 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2654 | { |
2655 | int i; | |
2656 | ||
a3f17187 | 2657 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2658 | printf_filtered ("\n\n"); |
2659 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2660 | printf_filtered ("\t%s\t- %s\n", |
2661 | filename_language_table[i].ext, | |
c906108c SS |
2662 | language_str (filename_language_table[i].lang)); |
2663 | } | |
2664 | ||
2665 | static void | |
fba45db2 | 2666 | init_filename_language_table (void) |
c906108c | 2667 | { |
c378eb4e | 2668 | if (fl_table_size == 0) /* Protect against repetition. */ |
c906108c SS |
2669 | { |
2670 | fl_table_size = 20; | |
2671 | fl_table_next = 0; | |
c5aa993b | 2672 | filename_language_table = |
c906108c | 2673 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b | 2674 | add_filename_language (".c", language_c); |
6aecb9c2 | 2675 | add_filename_language (".d", language_d); |
c5aa993b JM |
2676 | add_filename_language (".C", language_cplus); |
2677 | add_filename_language (".cc", language_cplus); | |
2678 | add_filename_language (".cp", language_cplus); | |
2679 | add_filename_language (".cpp", language_cplus); | |
2680 | add_filename_language (".cxx", language_cplus); | |
2681 | add_filename_language (".c++", language_cplus); | |
2682 | add_filename_language (".java", language_java); | |
c906108c | 2683 | add_filename_language (".class", language_java); |
da2cf7e0 | 2684 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2685 | add_filename_language (".f", language_fortran); |
2686 | add_filename_language (".F", language_fortran); | |
fd5700c7 JK |
2687 | add_filename_language (".for", language_fortran); |
2688 | add_filename_language (".FOR", language_fortran); | |
2689 | add_filename_language (".ftn", language_fortran); | |
2690 | add_filename_language (".FTN", language_fortran); | |
2691 | add_filename_language (".fpp", language_fortran); | |
2692 | add_filename_language (".FPP", language_fortran); | |
2693 | add_filename_language (".f90", language_fortran); | |
2694 | add_filename_language (".F90", language_fortran); | |
2695 | add_filename_language (".f95", language_fortran); | |
2696 | add_filename_language (".F95", language_fortran); | |
2697 | add_filename_language (".f03", language_fortran); | |
2698 | add_filename_language (".F03", language_fortran); | |
2699 | add_filename_language (".f08", language_fortran); | |
2700 | add_filename_language (".F08", language_fortran); | |
c5aa993b | 2701 | add_filename_language (".s", language_asm); |
aa707ed0 | 2702 | add_filename_language (".sx", language_asm); |
c5aa993b | 2703 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2704 | add_filename_language (".pas", language_pascal); |
2705 | add_filename_language (".p", language_pascal); | |
2706 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2707 | add_filename_language (".adb", language_ada); |
2708 | add_filename_language (".ads", language_ada); | |
2709 | add_filename_language (".a", language_ada); | |
2710 | add_filename_language (".ada", language_ada); | |
dde59185 | 2711 | add_filename_language (".dg", language_ada); |
c906108c SS |
2712 | } |
2713 | } | |
2714 | ||
2715 | enum language | |
dd786858 | 2716 | deduce_language_from_filename (const char *filename) |
c906108c SS |
2717 | { |
2718 | int i; | |
2719 | char *cp; | |
2720 | ||
2721 | if (filename != NULL) | |
2722 | if ((cp = strrchr (filename, '.')) != NULL) | |
2723 | for (i = 0; i < fl_table_next; i++) | |
2724 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2725 | return filename_language_table[i].lang; | |
2726 | ||
2727 | return language_unknown; | |
2728 | } | |
2729 | \f | |
2730 | /* allocate_symtab: | |
2731 | ||
2732 | Allocate and partly initialize a new symbol table. Return a pointer | |
2733 | to it. error() if no space. | |
2734 | ||
2735 | Caller must set these fields: | |
c5aa993b JM |
2736 | LINETABLE(symtab) |
2737 | symtab->blockvector | |
2738 | symtab->dirname | |
2739 | symtab->free_code | |
2740 | symtab->free_ptr | |
c906108c SS |
2741 | */ |
2742 | ||
2743 | struct symtab * | |
72b9f47f | 2744 | allocate_symtab (const char *filename, struct objfile *objfile) |
c906108c | 2745 | { |
52f0bd74 | 2746 | struct symtab *symtab; |
c906108c SS |
2747 | |
2748 | symtab = (struct symtab *) | |
4a146b47 | 2749 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2750 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2751 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2752 | objfile->filename_cache); | |
c5aa993b JM |
2753 | symtab->fullname = NULL; |
2754 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2755 | symtab->debugformat = "unknown"; |
c906108c | 2756 | |
c378eb4e | 2757 | /* Hook it to the objfile it comes from. */ |
c906108c | 2758 | |
c5aa993b JM |
2759 | symtab->objfile = objfile; |
2760 | symtab->next = objfile->symtabs; | |
2761 | objfile->symtabs = symtab; | |
c906108c | 2762 | |
c906108c SS |
2763 | return (symtab); |
2764 | } | |
c906108c | 2765 | \f |
c5aa993b | 2766 | |
c906108c | 2767 | /* Reset all data structures in gdb which may contain references to symbol |
c1e56572 | 2768 | table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c906108c SS |
2769 | |
2770 | void | |
c1e56572 | 2771 | clear_symtab_users (int add_flags) |
c906108c SS |
2772 | { |
2773 | /* Someday, we should do better than this, by only blowing away | |
2774 | the things that really need to be blown. */ | |
c0501be5 DJ |
2775 | |
2776 | /* Clear the "current" symtab first, because it is no longer valid. | |
2777 | breakpoint_re_set may try to access the current symtab. */ | |
2778 | clear_current_source_symtab_and_line (); | |
2779 | ||
c906108c | 2780 | clear_displays (); |
c1e56572 JK |
2781 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
2782 | breakpoint_re_set (); | |
6c95b8df | 2783 | set_default_breakpoint (0, NULL, 0, 0, 0); |
c906108c | 2784 | clear_pc_function_cache (); |
06d3b283 | 2785 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2786 | |
2787 | /* Clear globals which might have pointed into a removed objfile. | |
2788 | FIXME: It's not clear which of these are supposed to persist | |
2789 | between expressions and which ought to be reset each time. */ | |
2790 | expression_context_block = NULL; | |
2791 | innermost_block = NULL; | |
8756216b DP |
2792 | |
2793 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2794 | varobj_invalidate (); | |
2795 | ||
c906108c SS |
2796 | } |
2797 | ||
74b7792f AC |
2798 | static void |
2799 | clear_symtab_users_cleanup (void *ignore) | |
2800 | { | |
c1e56572 | 2801 | clear_symtab_users (0); |
74b7792f | 2802 | } |
c906108c | 2803 | \f |
c906108c SS |
2804 | /* OVERLAYS: |
2805 | The following code implements an abstraction for debugging overlay sections. | |
2806 | ||
2807 | The target model is as follows: | |
2808 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2809 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2810 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2811 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2812 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2813 | sections should be considered to be mapped from the VMA to the LMA. |
2814 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2815 | For instance, if a section has been mapped then its contents |
c5aa993b | 2816 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2817 | |
2818 | Two levels of debugger support for overlays are available. One is | |
2819 | "manual", in which the debugger relies on the user to tell it which | |
2820 | overlays are currently mapped. This level of support is | |
2821 | implemented entirely in the core debugger, and the information about | |
2822 | whether a section is mapped is kept in the objfile->obj_section table. | |
2823 | ||
2824 | The second level of support is "automatic", and is only available if | |
2825 | the target-specific code provides functionality to read the target's | |
2826 | overlay mapping table, and translate its contents for the debugger | |
2827 | (by updating the mapped state information in the obj_section tables). | |
2828 | ||
2829 | The interface is as follows: | |
c5aa993b JM |
2830 | User commands: |
2831 | overlay map <name> -- tell gdb to consider this section mapped | |
2832 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2833 | overlay list -- list the sections that GDB thinks are mapped | |
2834 | overlay read-target -- get the target's state of what's mapped | |
2835 | overlay off/manual/auto -- set overlay debugging state | |
2836 | Functional interface: | |
2837 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2838 | section, return that section. | |
5417f6dc | 2839 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2840 | the pc, either in its VMA or its LMA |
714835d5 | 2841 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2842 | section_is_overlay(sect): true if section's VMA != LMA |
2843 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2844 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2845 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2846 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2847 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2848 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2849 | either in VMA or LMA depending on whether | |
c378eb4e | 2850 | the symbol's section is currently mapped. */ |
c906108c SS |
2851 | |
2852 | /* Overlay debugging state: */ | |
2853 | ||
d874f1e2 | 2854 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2855 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2856 | |
c906108c | 2857 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2858 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2859 | SECTION is loaded at an address different from where it will "run". */ |
2860 | ||
2861 | int | |
714835d5 | 2862 | section_is_overlay (struct obj_section *section) |
c906108c | 2863 | { |
714835d5 UW |
2864 | if (overlay_debugging && section) |
2865 | { | |
2866 | bfd *abfd = section->objfile->obfd; | |
2867 | asection *bfd_section = section->the_bfd_section; | |
2868 | ||
2869 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
2870 | && bfd_section_lma (abfd, bfd_section) | |
2871 | != bfd_section_vma (abfd, bfd_section)) | |
2872 | return 1; | |
2873 | } | |
c906108c SS |
2874 | |
2875 | return 0; | |
2876 | } | |
2877 | ||
2878 | /* Function: overlay_invalidate_all (void) | |
2879 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2880 | ||
2881 | static void | |
fba45db2 | 2882 | overlay_invalidate_all (void) |
c906108c | 2883 | { |
c5aa993b | 2884 | struct objfile *objfile; |
c906108c SS |
2885 | struct obj_section *sect; |
2886 | ||
2887 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2888 | if (section_is_overlay (sect)) |
2889 | sect->ovly_mapped = -1; | |
c906108c SS |
2890 | } |
2891 | ||
714835d5 | 2892 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2893 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2894 | |
2895 | Access to the ovly_mapped flag is restricted to this function, so | |
2896 | that we can do automatic update. If the global flag | |
2897 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2898 | overlay_invalidate_all. If the mapped state of the particular | |
2899 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2900 | ||
714835d5 UW |
2901 | int |
2902 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2903 | { |
9216df95 UW |
2904 | struct gdbarch *gdbarch; |
2905 | ||
714835d5 | 2906 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2907 | return 0; |
2908 | ||
c5aa993b | 2909 | switch (overlay_debugging) |
c906108c SS |
2910 | { |
2911 | default: | |
d874f1e2 | 2912 | case ovly_off: |
c5aa993b | 2913 | return 0; /* overlay debugging off */ |
d874f1e2 | 2914 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2915 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 2916 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
2917 | gdbarch = get_objfile_arch (osect->objfile); |
2918 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
2919 | { |
2920 | if (overlay_cache_invalid) | |
2921 | { | |
2922 | overlay_invalidate_all (); | |
2923 | overlay_cache_invalid = 0; | |
2924 | } | |
2925 | if (osect->ovly_mapped == -1) | |
9216df95 | 2926 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
2927 | } |
2928 | /* fall thru to manual case */ | |
d874f1e2 | 2929 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2930 | return osect->ovly_mapped == 1; |
2931 | } | |
2932 | } | |
2933 | ||
c906108c SS |
2934 | /* Function: pc_in_unmapped_range |
2935 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2936 | ||
2937 | CORE_ADDR | |
714835d5 | 2938 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2939 | { |
714835d5 UW |
2940 | if (section_is_overlay (section)) |
2941 | { | |
2942 | bfd *abfd = section->objfile->obfd; | |
2943 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 2944 | |
714835d5 UW |
2945 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
2946 | bfd_vma size = bfd_get_section_size (bfd_section); | |
2947 | CORE_ADDR offset = obj_section_offset (section); | |
2948 | ||
2949 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
2950 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
2951 | return 1; | |
2952 | } | |
c906108c | 2953 | |
c906108c SS |
2954 | return 0; |
2955 | } | |
2956 | ||
2957 | /* Function: pc_in_mapped_range | |
2958 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2959 | ||
2960 | CORE_ADDR | |
714835d5 | 2961 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2962 | { |
714835d5 UW |
2963 | if (section_is_overlay (section)) |
2964 | { | |
2965 | if (obj_section_addr (section) <= pc | |
2966 | && pc < obj_section_endaddr (section)) | |
2967 | return 1; | |
2968 | } | |
c906108c | 2969 | |
c906108c SS |
2970 | return 0; |
2971 | } | |
2972 | ||
9ec8e6a0 JB |
2973 | |
2974 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2975 | otherwise. */ | |
b9362cc7 | 2976 | static int |
714835d5 | 2977 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 2978 | { |
714835d5 UW |
2979 | CORE_ADDR a_start = obj_section_addr (a); |
2980 | CORE_ADDR a_end = obj_section_endaddr (a); | |
2981 | CORE_ADDR b_start = obj_section_addr (b); | |
2982 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
2983 | |
2984 | return (a_start < b_end && b_start < a_end); | |
2985 | } | |
2986 | ||
c906108c SS |
2987 | /* Function: overlay_unmapped_address (PC, SECTION) |
2988 | Returns the address corresponding to PC in the unmapped (load) range. | |
2989 | May be the same as PC. */ | |
2990 | ||
2991 | CORE_ADDR | |
714835d5 | 2992 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 2993 | { |
714835d5 UW |
2994 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
2995 | { | |
2996 | bfd *abfd = section->objfile->obfd; | |
2997 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 2998 | |
714835d5 UW |
2999 | return pc + bfd_section_lma (abfd, bfd_section) |
3000 | - bfd_section_vma (abfd, bfd_section); | |
3001 | } | |
c906108c SS |
3002 | |
3003 | return pc; | |
3004 | } | |
3005 | ||
3006 | /* Function: overlay_mapped_address (PC, SECTION) | |
3007 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3008 | May be the same as PC. */ | |
3009 | ||
3010 | CORE_ADDR | |
714835d5 | 3011 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3012 | { |
714835d5 UW |
3013 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3014 | { | |
3015 | bfd *abfd = section->objfile->obfd; | |
3016 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3017 | |
714835d5 UW |
3018 | return pc + bfd_section_vma (abfd, bfd_section) |
3019 | - bfd_section_lma (abfd, bfd_section); | |
3020 | } | |
c906108c SS |
3021 | |
3022 | return pc; | |
3023 | } | |
3024 | ||
3025 | ||
5417f6dc | 3026 | /* Function: symbol_overlayed_address |
c906108c SS |
3027 | Return one of two addresses (relative to the VMA or to the LMA), |
3028 | depending on whether the section is mapped or not. */ | |
3029 | ||
c5aa993b | 3030 | CORE_ADDR |
714835d5 | 3031 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3032 | { |
3033 | if (overlay_debugging) | |
3034 | { | |
c378eb4e | 3035 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3036 | if (section == 0) |
3037 | return address; | |
c378eb4e MS |
3038 | /* If the symbol's section is not an overlay, just return its |
3039 | address. */ | |
c906108c SS |
3040 | if (!section_is_overlay (section)) |
3041 | return address; | |
c378eb4e | 3042 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3043 | if (section_is_mapped (section)) |
3044 | return address; | |
3045 | /* | |
3046 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3047 | * then return its LOADED address rather than its vma address!! | |
3048 | */ | |
3049 | return overlay_unmapped_address (address, section); | |
3050 | } | |
3051 | return address; | |
3052 | } | |
3053 | ||
5417f6dc | 3054 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3055 | Return the best-match overlay section for PC: |
3056 | If PC matches a mapped overlay section's VMA, return that section. | |
3057 | Else if PC matches an unmapped section's VMA, return that section. | |
3058 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3059 | ||
714835d5 | 3060 | struct obj_section * |
fba45db2 | 3061 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3062 | { |
c5aa993b | 3063 | struct objfile *objfile; |
c906108c SS |
3064 | struct obj_section *osect, *best_match = NULL; |
3065 | ||
3066 | if (overlay_debugging) | |
3067 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3068 | if (section_is_overlay (osect)) |
c5aa993b | 3069 | { |
714835d5 | 3070 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3071 | { |
714835d5 UW |
3072 | if (section_is_mapped (osect)) |
3073 | return osect; | |
c5aa993b JM |
3074 | else |
3075 | best_match = osect; | |
3076 | } | |
714835d5 | 3077 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3078 | best_match = osect; |
3079 | } | |
714835d5 | 3080 | return best_match; |
c906108c SS |
3081 | } |
3082 | ||
3083 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3084 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3085 | currently marked as MAPPED, return that section. Else return NULL. */ |
3086 | ||
714835d5 | 3087 | struct obj_section * |
fba45db2 | 3088 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3089 | { |
c5aa993b | 3090 | struct objfile *objfile; |
c906108c SS |
3091 | struct obj_section *osect; |
3092 | ||
3093 | if (overlay_debugging) | |
3094 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3095 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3096 | return osect; | |
c906108c SS |
3097 | |
3098 | return NULL; | |
3099 | } | |
3100 | ||
3101 | /* Function: list_overlays_command | |
c378eb4e | 3102 | Print a list of mapped sections and their PC ranges. */ |
c906108c SS |
3103 | |
3104 | void | |
fba45db2 | 3105 | list_overlays_command (char *args, int from_tty) |
c906108c | 3106 | { |
c5aa993b JM |
3107 | int nmapped = 0; |
3108 | struct objfile *objfile; | |
c906108c SS |
3109 | struct obj_section *osect; |
3110 | ||
3111 | if (overlay_debugging) | |
3112 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3113 | if (section_is_mapped (osect)) |
c5aa993b | 3114 | { |
5af949e3 | 3115 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3116 | const char *name; |
3117 | bfd_vma lma, vma; | |
3118 | int size; | |
3119 | ||
3120 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3121 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3122 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3123 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3124 | ||
3125 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3126 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3127 | puts_filtered (" - "); |
5af949e3 | 3128 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3129 | printf_filtered (", mapped at "); |
5af949e3 | 3130 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3131 | puts_filtered (" - "); |
5af949e3 | 3132 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3133 | puts_filtered ("\n"); |
3134 | ||
3135 | nmapped++; | |
3136 | } | |
c906108c | 3137 | if (nmapped == 0) |
a3f17187 | 3138 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3139 | } |
3140 | ||
3141 | /* Function: map_overlay_command | |
3142 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3143 | ||
3144 | void | |
fba45db2 | 3145 | map_overlay_command (char *args, int from_tty) |
c906108c | 3146 | { |
c5aa993b JM |
3147 | struct objfile *objfile, *objfile2; |
3148 | struct obj_section *sec, *sec2; | |
c906108c SS |
3149 | |
3150 | if (!overlay_debugging) | |
3e43a32a MS |
3151 | error (_("Overlay debugging not enabled. Use " |
3152 | "either the 'overlay auto' or\n" | |
3153 | "the 'overlay manual' command.")); | |
c906108c SS |
3154 | |
3155 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3156 | error (_("Argument required: name of an overlay section")); |
c906108c | 3157 | |
c378eb4e | 3158 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3159 | ALL_OBJSECTIONS (objfile, sec) |
3160 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3161 | { |
c378eb4e | 3162 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3163 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3164 | continue; /* not an overlay section */ |
3165 | ||
c378eb4e | 3166 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3167 | sec->ovly_mapped = 1; |
3168 | ||
3169 | /* Next, make a pass and unmap any sections that are | |
3170 | overlapped by this new section: */ | |
3171 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3172 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3173 | { |
3174 | if (info_verbose) | |
a3f17187 | 3175 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3176 | bfd_section_name (objfile->obfd, |
3177 | sec2->the_bfd_section)); | |
c378eb4e | 3178 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3179 | } |
3180 | return; | |
3181 | } | |
8a3fe4f8 | 3182 | error (_("No overlay section called %s"), args); |
c906108c SS |
3183 | } |
3184 | ||
3185 | /* Function: unmap_overlay_command | |
5417f6dc | 3186 | Mark the overlay section as unmapped |
c906108c SS |
3187 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3188 | ||
3189 | void | |
fba45db2 | 3190 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3191 | { |
c5aa993b | 3192 | struct objfile *objfile; |
c906108c SS |
3193 | struct obj_section *sec; |
3194 | ||
3195 | if (!overlay_debugging) | |
3e43a32a MS |
3196 | error (_("Overlay debugging not enabled. " |
3197 | "Use either the 'overlay auto' or\n" | |
3198 | "the 'overlay manual' command.")); | |
c906108c SS |
3199 | |
3200 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3201 | error (_("Argument required: name of an overlay section")); |
c906108c | 3202 | |
c378eb4e | 3203 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3204 | ALL_OBJSECTIONS (objfile, sec) |
3205 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3206 | { |
3207 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3208 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3209 | sec->ovly_mapped = 0; |
3210 | return; | |
3211 | } | |
8a3fe4f8 | 3212 | error (_("No overlay section called %s"), args); |
c906108c SS |
3213 | } |
3214 | ||
3215 | /* Function: overlay_auto_command | |
3216 | A utility command to turn on overlay debugging. | |
c378eb4e | 3217 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3218 | |
3219 | static void | |
fba45db2 | 3220 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3221 | { |
d874f1e2 | 3222 | overlay_debugging = ovly_auto; |
1900040c | 3223 | enable_overlay_breakpoints (); |
c906108c | 3224 | if (info_verbose) |
a3f17187 | 3225 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3226 | } |
3227 | ||
3228 | /* Function: overlay_manual_command | |
3229 | A utility command to turn on overlay debugging. | |
c378eb4e | 3230 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3231 | |
3232 | static void | |
fba45db2 | 3233 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3234 | { |
d874f1e2 | 3235 | overlay_debugging = ovly_on; |
1900040c | 3236 | disable_overlay_breakpoints (); |
c906108c | 3237 | if (info_verbose) |
a3f17187 | 3238 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3239 | } |
3240 | ||
3241 | /* Function: overlay_off_command | |
3242 | A utility command to turn on overlay debugging. | |
c378eb4e | 3243 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3244 | |
3245 | static void | |
fba45db2 | 3246 | overlay_off_command (char *args, int from_tty) |
c906108c | 3247 | { |
d874f1e2 | 3248 | overlay_debugging = ovly_off; |
1900040c | 3249 | disable_overlay_breakpoints (); |
c906108c | 3250 | if (info_verbose) |
a3f17187 | 3251 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3252 | } |
3253 | ||
3254 | static void | |
fba45db2 | 3255 | overlay_load_command (char *args, int from_tty) |
c906108c | 3256 | { |
e17c207e UW |
3257 | struct gdbarch *gdbarch = get_current_arch (); |
3258 | ||
3259 | if (gdbarch_overlay_update_p (gdbarch)) | |
3260 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3261 | else |
8a3fe4f8 | 3262 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3263 | } |
3264 | ||
3265 | /* Function: overlay_command | |
c378eb4e | 3266 | A place-holder for a mis-typed command. */ |
c906108c | 3267 | |
c378eb4e | 3268 | /* Command list chain containing all defined "overlay" subcommands. */ |
c906108c SS |
3269 | struct cmd_list_element *overlaylist; |
3270 | ||
3271 | static void | |
fba45db2 | 3272 | overlay_command (char *args, int from_tty) |
c906108c | 3273 | { |
c5aa993b | 3274 | printf_unfiltered |
c906108c SS |
3275 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3276 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3277 | } | |
3278 | ||
3279 | ||
3280 | /* Target Overlays for the "Simplest" overlay manager: | |
3281 | ||
5417f6dc RM |
3282 | This is GDB's default target overlay layer. It works with the |
3283 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3284 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3285 | so targets that use a different runtime overlay manager can |
c906108c SS |
3286 | substitute their own overlay_update function and take over the |
3287 | function pointer. | |
3288 | ||
3289 | The overlay_update function pokes around in the target's data structures | |
3290 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3291 | this information. | |
3292 | ||
3293 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3294 | unsigned _novlys; /# number of overlay sections #/ |
3295 | unsigned _ovly_table[_novlys][4] = { | |
3296 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3297 | {..., ..., ..., ...}, | |
3298 | } | |
3299 | unsigned _novly_regions; /# number of overlay regions #/ | |
3300 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3301 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3302 | {..., ..., ...}, | |
3303 | } | |
c906108c SS |
3304 | These functions will attempt to update GDB's mappedness state in the |
3305 | symbol section table, based on the target's mappedness state. | |
3306 | ||
3307 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3308 | attempt to detect when the cached copy is invalidated. The main | |
3309 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3310 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3311 | the target (whenever possible). */ |
c906108c SS |
3312 | |
3313 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3314 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3315 | static unsigned cache_novlys = 0; |
c906108c | 3316 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3317 | enum ovly_index |
3318 | { | |
3319 | VMA, SIZE, LMA, MAPPED | |
3320 | }; | |
c906108c | 3321 | |
c378eb4e | 3322 | /* Throw away the cached copy of _ovly_table. */ |
c906108c | 3323 | static void |
fba45db2 | 3324 | simple_free_overlay_table (void) |
c906108c SS |
3325 | { |
3326 | if (cache_ovly_table) | |
b8c9b27d | 3327 | xfree (cache_ovly_table); |
c5aa993b | 3328 | cache_novlys = 0; |
c906108c SS |
3329 | cache_ovly_table = NULL; |
3330 | cache_ovly_table_base = 0; | |
3331 | } | |
3332 | ||
9216df95 | 3333 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3334 | Convert to host order. int LEN is number of ints. */ |
c906108c | 3335 | static void |
9216df95 | 3336 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3337 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3338 | { |
c378eb4e | 3339 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3340 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3341 | int i; |
c906108c | 3342 | |
9216df95 | 3343 | read_memory (memaddr, buf, len * size); |
c906108c | 3344 | for (i = 0; i < len; i++) |
e17a4113 | 3345 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3346 | } |
3347 | ||
3348 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3349 | (and _novlys, which is needed for the table's size). */ |
c5aa993b | 3350 | static int |
fba45db2 | 3351 | simple_read_overlay_table (void) |
c906108c | 3352 | { |
0d43edd1 | 3353 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3354 | struct gdbarch *gdbarch; |
3355 | int word_size; | |
e17a4113 | 3356 | enum bfd_endian byte_order; |
c906108c SS |
3357 | |
3358 | simple_free_overlay_table (); | |
9b27852e | 3359 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3360 | if (! novlys_msym) |
c906108c | 3361 | { |
8a3fe4f8 | 3362 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3363 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3364 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3365 | return 0; |
c906108c | 3366 | } |
0d43edd1 | 3367 | |
9b27852e | 3368 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3369 | if (! ovly_table_msym) |
3370 | { | |
8a3fe4f8 | 3371 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3372 | "`_ovly_table' array\n" |
8a3fe4f8 | 3373 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3374 | return 0; |
3375 | } | |
3376 | ||
9216df95 UW |
3377 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3378 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3379 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3380 | |
e17a4113 UW |
3381 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3382 | 4, byte_order); | |
0d43edd1 JB |
3383 | cache_ovly_table |
3384 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3385 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3386 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3387 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3388 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3389 | |
c5aa993b | 3390 | return 1; /* SUCCESS */ |
c906108c SS |
3391 | } |
3392 | ||
5417f6dc | 3393 | /* Function: simple_overlay_update_1 |
c906108c SS |
3394 | A helper function for simple_overlay_update. Assuming a cached copy |
3395 | of _ovly_table exists, look through it to find an entry whose vma, | |
3396 | lma and size match those of OSECT. Re-read the entry and make sure | |
3397 | it still matches OSECT (else the table may no longer be valid). | |
3398 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3399 | success, 0 for failure. */ | |
3400 | ||
3401 | static int | |
fba45db2 | 3402 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3403 | { |
3404 | int i, size; | |
fbd35540 MS |
3405 | bfd *obfd = osect->objfile->obfd; |
3406 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3407 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3408 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3409 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3410 | |
2c500098 | 3411 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3412 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3413 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3414 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3415 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3416 | { |
9216df95 UW |
3417 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3418 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3419 | 4, word_size, byte_order); |
fbd35540 MS |
3420 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3421 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3422 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3423 | { |
3424 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3425 | return 1; | |
3426 | } | |
c378eb4e | 3427 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3428 | return 0; |
3429 | } | |
3430 | return 0; | |
3431 | } | |
3432 | ||
3433 | /* Function: simple_overlay_update | |
5417f6dc RM |
3434 | If OSECT is NULL, then update all sections' mapped state |
3435 | (after re-reading the entire target _ovly_table). | |
3436 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3437 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3438 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3439 | re-read the entire cache, and go ahead and update all sections. */ |
3440 | ||
1c772458 | 3441 | void |
fba45db2 | 3442 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3443 | { |
c5aa993b | 3444 | struct objfile *objfile; |
c906108c | 3445 | |
c378eb4e | 3446 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3447 | if (osect) |
c378eb4e | 3448 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3449 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3450 | { |
3451 | /* Does its cached location match what's currently in the | |
3452 | symtab? */ | |
3453 | struct minimal_symbol *minsym | |
3454 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); | |
3455 | ||
3456 | if (minsym == NULL) | |
3457 | error (_("Error reading inferior's overlay table: couldn't " | |
3458 | "find `_ovly_table' array\n" | |
3459 | "in inferior. Use `overlay manual' mode.")); | |
3460 | ||
3461 | if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym)) | |
3462 | /* Then go ahead and try to look up this single section in | |
3463 | the cache. */ | |
3464 | if (simple_overlay_update_1 (osect)) | |
3465 | /* Found it! We're done. */ | |
3466 | return; | |
3467 | } | |
c906108c SS |
3468 | |
3469 | /* Cached table no good: need to read the entire table anew. | |
3470 | Or else we want all the sections, in which case it's actually | |
3471 | more efficient to read the whole table in one block anyway. */ | |
3472 | ||
0d43edd1 JB |
3473 | if (! simple_read_overlay_table ()) |
3474 | return; | |
3475 | ||
c378eb4e | 3476 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3477 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3478 | if (section_is_overlay (osect)) |
c5aa993b JM |
3479 | { |
3480 | int i, size; | |
fbd35540 MS |
3481 | bfd *obfd = osect->objfile->obfd; |
3482 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3483 | |
2c500098 | 3484 | size = bfd_get_section_size (bsect); |
c5aa993b | 3485 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3486 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3487 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3488 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c378eb4e | 3489 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3490 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3491 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3492 | } |
3493 | } | |
c906108c SS |
3494 | } |
3495 | ||
086df311 DJ |
3496 | /* Set the output sections and output offsets for section SECTP in |
3497 | ABFD. The relocation code in BFD will read these offsets, so we | |
3498 | need to be sure they're initialized. We map each section to itself, | |
3499 | with no offset; this means that SECTP->vma will be honored. */ | |
3500 | ||
3501 | static void | |
3502 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3503 | { | |
3504 | sectp->output_section = sectp; | |
3505 | sectp->output_offset = 0; | |
3506 | } | |
3507 | ||
ac8035ab TG |
3508 | /* Default implementation for sym_relocate. */ |
3509 | ||
3510 | ||
3511 | bfd_byte * | |
3512 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3513 | bfd_byte *buf) | |
3514 | { | |
3515 | bfd *abfd = objfile->obfd; | |
3516 | ||
3517 | /* We're only interested in sections with relocation | |
3518 | information. */ | |
3519 | if ((sectp->flags & SEC_RELOC) == 0) | |
3520 | return NULL; | |
3521 | ||
3522 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3523 | all sections begin at 0. */ | |
3524 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3525 | ||
3526 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3527 | } | |
3528 | ||
086df311 DJ |
3529 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3530 | contents are stored in BUF if it is non-NULL, or returned in a | |
3531 | malloc'd buffer otherwise. | |
3532 | ||
3533 | For some platforms and debug info formats, shared libraries contain | |
3534 | relocations against the debug sections (particularly for DWARF-2; | |
3535 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3536 | the version of the linker in use). Also, ELF object files naturally | |
3537 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3538 | the relocations in order to get the locations of symbols correct. |
3539 | Another example that may require relocation processing, is the | |
3540 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3541 | debug section. */ | |
086df311 DJ |
3542 | |
3543 | bfd_byte * | |
ac8035ab TG |
3544 | symfile_relocate_debug_section (struct objfile *objfile, |
3545 | asection *sectp, bfd_byte *buf) | |
086df311 | 3546 | { |
ac8035ab | 3547 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3548 | |
ac8035ab | 3549 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3550 | } |
c906108c | 3551 | |
31d99776 DJ |
3552 | struct symfile_segment_data * |
3553 | get_symfile_segment_data (bfd *abfd) | |
3554 | { | |
00b5771c | 3555 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3556 | |
3557 | if (sf == NULL) | |
3558 | return NULL; | |
3559 | ||
3560 | return sf->sym_segments (abfd); | |
3561 | } | |
3562 | ||
3563 | void | |
3564 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3565 | { | |
3566 | xfree (data->segment_bases); | |
3567 | xfree (data->segment_sizes); | |
3568 | xfree (data->segment_info); | |
3569 | xfree (data); | |
3570 | } | |
3571 | ||
28c32713 JB |
3572 | |
3573 | /* Given: | |
3574 | - DATA, containing segment addresses from the object file ABFD, and | |
3575 | the mapping from ABFD's sections onto the segments that own them, | |
3576 | and | |
3577 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3578 | segment addresses reported by the target, | |
3579 | store the appropriate offsets for each section in OFFSETS. | |
3580 | ||
3581 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3582 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3583 | ||
8d385431 DJ |
3584 | If there are more entries, then ignore the extra. The target may |
3585 | not be able to distinguish between an empty data segment and a | |
3586 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3587 | int |
3588 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3589 | struct section_offsets *offsets, | |
3590 | int num_segment_bases, | |
3591 | const CORE_ADDR *segment_bases) | |
3592 | { | |
3593 | int i; | |
3594 | asection *sect; | |
3595 | ||
28c32713 JB |
3596 | /* It doesn't make sense to call this function unless you have some |
3597 | segment base addresses. */ | |
202b96c1 | 3598 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3599 | |
31d99776 DJ |
3600 | /* If we do not have segment mappings for the object file, we |
3601 | can not relocate it by segments. */ | |
3602 | gdb_assert (data != NULL); | |
3603 | gdb_assert (data->num_segments > 0); | |
3604 | ||
31d99776 DJ |
3605 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3606 | { | |
31d99776 DJ |
3607 | int which = data->segment_info[i]; |
3608 | ||
28c32713 JB |
3609 | gdb_assert (0 <= which && which <= data->num_segments); |
3610 | ||
3611 | /* Don't bother computing offsets for sections that aren't | |
3612 | loaded as part of any segment. */ | |
3613 | if (! which) | |
3614 | continue; | |
3615 | ||
3616 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3617 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3618 | if (which > num_segment_bases) |
28c32713 | 3619 | which = num_segment_bases; |
31d99776 | 3620 | |
28c32713 JB |
3621 | offsets->offsets[i] = (segment_bases[which - 1] |
3622 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3623 | } |
3624 | ||
3625 | return 1; | |
3626 | } | |
3627 | ||
3628 | static void | |
3629 | symfile_find_segment_sections (struct objfile *objfile) | |
3630 | { | |
3631 | bfd *abfd = objfile->obfd; | |
3632 | int i; | |
3633 | asection *sect; | |
3634 | struct symfile_segment_data *data; | |
3635 | ||
3636 | data = get_symfile_segment_data (objfile->obfd); | |
3637 | if (data == NULL) | |
3638 | return; | |
3639 | ||
3640 | if (data->num_segments != 1 && data->num_segments != 2) | |
3641 | { | |
3642 | free_symfile_segment_data (data); | |
3643 | return; | |
3644 | } | |
3645 | ||
3646 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3647 | { | |
31d99776 DJ |
3648 | int which = data->segment_info[i]; |
3649 | ||
3650 | if (which == 1) | |
3651 | { | |
3652 | if (objfile->sect_index_text == -1) | |
3653 | objfile->sect_index_text = sect->index; | |
3654 | ||
3655 | if (objfile->sect_index_rodata == -1) | |
3656 | objfile->sect_index_rodata = sect->index; | |
3657 | } | |
3658 | else if (which == 2) | |
3659 | { | |
3660 | if (objfile->sect_index_data == -1) | |
3661 | objfile->sect_index_data = sect->index; | |
3662 | ||
3663 | if (objfile->sect_index_bss == -1) | |
3664 | objfile->sect_index_bss = sect->index; | |
3665 | } | |
3666 | } | |
3667 | ||
3668 | free_symfile_segment_data (data); | |
3669 | } | |
3670 | ||
c906108c | 3671 | void |
fba45db2 | 3672 | _initialize_symfile (void) |
c906108c SS |
3673 | { |
3674 | struct cmd_list_element *c; | |
c5aa993b | 3675 | |
1a966eab AC |
3676 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3677 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3678 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3679 | to execute."), &cmdlist); |
5ba2abeb | 3680 | set_cmd_completer (c, filename_completer); |
c906108c | 3681 | |
1a966eab | 3682 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3683 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
3e43a32a MS |
3684 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\ |
3685 | ...]\nADDR is the starting address of the file's text.\n\ | |
db162d44 EZ |
3686 | The optional arguments are section-name section-address pairs and\n\ |
3687 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3688 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3689 | &cmdlist); |
5ba2abeb | 3690 | set_cmd_completer (c, filename_completer); |
c906108c | 3691 | |
1a966eab AC |
3692 | c = add_cmd ("load", class_files, load_command, _("\ |
3693 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3694 | for access from GDB.\n\ |
3695 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3696 | set_cmd_completer (c, filename_completer); |
c906108c | 3697 | |
5bf193a2 AC |
3698 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3699 | &symbol_reloading, _("\ | |
3700 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3701 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3702 | NULL, | |
920d2a44 | 3703 | show_symbol_reloading, |
5bf193a2 | 3704 | &setlist, &showlist); |
c906108c | 3705 | |
c5aa993b | 3706 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3707 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3708 | "overlay ", 0, &cmdlist); |
3709 | ||
3710 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3711 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3712 | ||
c5aa993b | 3713 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3714 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3715 | |
c5aa993b | 3716 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3717 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3718 | |
c5aa993b | 3719 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3720 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3721 | |
c5aa993b | 3722 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3723 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3724 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3725 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3726 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3727 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3728 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3729 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3730 | |
3731 | /* Filename extension to source language lookup table: */ | |
3732 | init_filename_language_table (); | |
26c41df3 AC |
3733 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3734 | &ext_args, _("\ | |
3735 | Set mapping between filename extension and source language."), _("\ | |
3736 | Show mapping between filename extension and source language."), _("\ | |
3737 | Usage: set extension-language .foo bar"), | |
3738 | set_ext_lang_command, | |
920d2a44 | 3739 | show_ext_args, |
26c41df3 | 3740 | &setlist, &showlist); |
c906108c | 3741 | |
c5aa993b | 3742 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3743 | _("All filename extensions associated with a source language.")); |
917317f4 | 3744 | |
525226b5 AC |
3745 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3746 | &debug_file_directory, _("\ | |
24ddea62 JK |
3747 | Set the directories where separate debug symbols are searched for."), _("\ |
3748 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3749 | Separate debug symbols are first searched for in the same\n\ |
3750 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3751 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3752 | each global debug-file-directory component prepended."), |
525226b5 | 3753 | NULL, |
920d2a44 | 3754 | show_debug_file_directory, |
525226b5 | 3755 | &setlist, &showlist); |
c906108c | 3756 | } |