Commit | Line | Data |
---|---|---|
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, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | |
c906108c | 68 | |
9a4105ab AC |
69 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
70 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
71 | unsigned long section_sent, |
72 | unsigned long section_size, | |
73 | unsigned long total_sent, | |
c2d11a7d | 74 | unsigned long total_size); |
769d7dc4 AC |
75 | void (*deprecated_pre_add_symbol_hook) (const char *); |
76 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 77 | |
74b7792f AC |
78 | static void clear_symtab_users_cleanup (void *ignore); |
79 | ||
c906108c | 80 | /* Global variables owned by this file */ |
c5aa993b | 81 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 82 | |
c906108c SS |
83 | /* External variables and functions referenced. */ |
84 | ||
a14ed312 | 85 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
86 | |
87 | /* Functions this file defines */ | |
88 | ||
89 | #if 0 | |
a14ed312 KB |
90 | static int simple_read_overlay_region_table (void); |
91 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
92 | #endif |
93 | ||
a14ed312 | 94 | static void load_command (char *, int); |
c906108c | 95 | |
d7db6da9 FN |
96 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
97 | ||
a14ed312 | 98 | static void add_symbol_file_command (char *, int); |
c906108c | 99 | |
5b5d99cf JB |
100 | static void reread_separate_symbols (struct objfile *objfile); |
101 | ||
a14ed312 | 102 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 103 | |
a14ed312 | 104 | bfd *symfile_bfd_open (char *); |
c906108c | 105 | |
0e931cf0 JB |
106 | int get_section_index (struct objfile *, char *); |
107 | ||
31d99776 | 108 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 109 | |
a14ed312 | 110 | static void decrement_reading_symtab (void *); |
c906108c | 111 | |
a14ed312 | 112 | static void overlay_invalidate_all (void); |
c906108c | 113 | |
a14ed312 | 114 | void list_overlays_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | void map_overlay_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | void unmap_overlay_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void overlay_auto_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_manual_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void overlay_off_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void overlay_load_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void overlay_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | static void simple_free_overlay_table (void); |
c906108c | 131 | |
e17a4113 UW |
132 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
133 | enum bfd_endian); | |
c906108c | 134 | |
a14ed312 | 135 | static int simple_read_overlay_table (void); |
c906108c | 136 | |
a14ed312 | 137 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 138 | |
a14ed312 | 139 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 140 | |
a14ed312 | 141 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 142 | |
5b5d99cf JB |
143 | static char *find_separate_debug_file (struct objfile *objfile); |
144 | ||
a14ed312 | 145 | static void init_filename_language_table (void); |
392a587b | 146 | |
31d99776 DJ |
147 | static void symfile_find_segment_sections (struct objfile *objfile); |
148 | ||
a14ed312 | 149 | void _initialize_symfile (void); |
c906108c SS |
150 | |
151 | /* List of all available sym_fns. On gdb startup, each object file reader | |
152 | calls add_symtab_fns() to register information on each format it is | |
153 | prepared to read. */ | |
154 | ||
155 | static struct sym_fns *symtab_fns = NULL; | |
156 | ||
157 | /* Flag for whether user will be reloading symbols multiple times. | |
158 | Defaults to ON for VxWorks, otherwise OFF. */ | |
159 | ||
160 | #ifdef SYMBOL_RELOADING_DEFAULT | |
161 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
162 | #else | |
163 | int symbol_reloading = 0; | |
164 | #endif | |
920d2a44 AC |
165 | static void |
166 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
167 | struct cmd_list_element *c, const char *value) | |
168 | { | |
169 | fprintf_filtered (file, _("\ | |
170 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
171 | value); | |
172 | } | |
173 | ||
b7209cb4 FF |
174 | /* If non-zero, shared library symbols will be added automatically |
175 | when the inferior is created, new libraries are loaded, or when | |
176 | attaching to the inferior. This is almost always what users will | |
177 | want to have happen; but for very large programs, the startup time | |
178 | will be excessive, and so if this is a problem, the user can clear | |
179 | this flag and then add the shared library symbols as needed. Note | |
180 | that there is a potential for confusion, since if the shared | |
c906108c | 181 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 182 | report all the functions that are actually present. */ |
c906108c SS |
183 | |
184 | int auto_solib_add = 1; | |
b7209cb4 FF |
185 | |
186 | /* For systems that support it, a threshold size in megabytes. If | |
187 | automatically adding a new library's symbol table to those already | |
188 | known to the debugger would cause the total shared library symbol | |
189 | size to exceed this threshhold, then the shlib's symbols are not | |
190 | added. The threshold is ignored if the user explicitly asks for a | |
191 | shlib to be added, such as when using the "sharedlibrary" | |
192 | command. */ | |
193 | ||
194 | int auto_solib_limit; | |
c906108c | 195 | \f |
c5aa993b | 196 | |
0fe19209 DC |
197 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
198 | for the comparison. */ | |
c906108c SS |
199 | |
200 | static int | |
0cd64fe2 | 201 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 202 | { |
0fe19209 DC |
203 | struct partial_symbol *const *s1 = s1p; |
204 | struct partial_symbol *const *s2 = s2p; | |
205 | ||
4725b721 PH |
206 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
207 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
208 | } |
209 | ||
210 | void | |
fba45db2 | 211 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
212 | { |
213 | /* Sort the global list; don't sort the static list */ | |
214 | ||
c5aa993b JM |
215 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
216 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
217 | compare_psymbols); |
218 | } | |
219 | ||
c906108c SS |
220 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
221 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
222 | Note that the string at PTR does not have to be null terminated, I.E. it | |
223 | may be part of a larger string and we are only saving a substring. */ | |
224 | ||
225 | char * | |
63ca651f | 226 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 227 | { |
52f0bd74 | 228 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
229 | /* Open-coded memcpy--saves function call time. These strings are usually |
230 | short. FIXME: Is this really still true with a compiler that can | |
231 | inline memcpy? */ | |
232 | { | |
aa1ee363 AC |
233 | const char *p1 = ptr; |
234 | char *p2 = p; | |
63ca651f | 235 | const char *end = ptr + size; |
c906108c SS |
236 | while (p1 != end) |
237 | *p2++ = *p1++; | |
238 | } | |
239 | p[size] = 0; | |
240 | return p; | |
241 | } | |
242 | ||
243 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
244 | in the obstack pointed to by OBSTACKP. */ | |
245 | ||
246 | char * | |
fba45db2 KB |
247 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
248 | const char *s3) | |
c906108c | 249 | { |
52f0bd74 AC |
250 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
251 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
252 | strcpy (val, s1); |
253 | strcat (val, s2); | |
254 | strcat (val, s3); | |
255 | return val; | |
256 | } | |
257 | ||
258 | /* True if we are nested inside psymtab_to_symtab. */ | |
259 | ||
260 | int currently_reading_symtab = 0; | |
261 | ||
262 | static void | |
fba45db2 | 263 | decrement_reading_symtab (void *dummy) |
c906108c SS |
264 | { |
265 | currently_reading_symtab--; | |
266 | } | |
267 | ||
268 | /* Get the symbol table that corresponds to a partial_symtab. | |
269 | This is fast after the first time you do it. In fact, there | |
270 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
271 | case inline. */ | |
272 | ||
273 | struct symtab * | |
aa1ee363 | 274 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
275 | { |
276 | /* If it's been looked up before, return it. */ | |
277 | if (pst->symtab) | |
278 | return pst->symtab; | |
279 | ||
280 | /* If it has not yet been read in, read it. */ | |
281 | if (!pst->readin) | |
c5aa993b | 282 | { |
c906108c SS |
283 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
284 | currently_reading_symtab++; | |
285 | (*pst->read_symtab) (pst); | |
286 | do_cleanups (back_to); | |
287 | } | |
288 | ||
289 | return pst->symtab; | |
290 | } | |
291 | ||
5417f6dc RM |
292 | /* Remember the lowest-addressed loadable section we've seen. |
293 | This function is called via bfd_map_over_sections. | |
c906108c SS |
294 | |
295 | In case of equal vmas, the section with the largest size becomes the | |
296 | lowest-addressed loadable section. | |
297 | ||
298 | If the vmas and sizes are equal, the last section is considered the | |
299 | lowest-addressed loadable section. */ | |
300 | ||
301 | void | |
4efb68b1 | 302 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 303 | { |
c5aa993b | 304 | asection **lowest = (asection **) obj; |
c906108c SS |
305 | |
306 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
307 | return; | |
308 | if (!*lowest) | |
309 | *lowest = sect; /* First loadable section */ | |
310 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
311 | *lowest = sect; /* A lower loadable section */ | |
312 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
313 | && (bfd_section_size (abfd, (*lowest)) | |
314 | <= bfd_section_size (abfd, sect))) | |
315 | *lowest = sect; | |
316 | } | |
317 | ||
a39a16c4 MM |
318 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
319 | ||
320 | struct section_addr_info * | |
321 | alloc_section_addr_info (size_t num_sections) | |
322 | { | |
323 | struct section_addr_info *sap; | |
324 | size_t size; | |
325 | ||
326 | size = (sizeof (struct section_addr_info) | |
327 | + sizeof (struct other_sections) * (num_sections - 1)); | |
328 | sap = (struct section_addr_info *) xmalloc (size); | |
329 | memset (sap, 0, size); | |
330 | sap->num_sections = num_sections; | |
331 | ||
332 | return sap; | |
333 | } | |
62557bbc | 334 | |
7b90c3f9 JB |
335 | |
336 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
337 | any, are also freshly allocated copies of those in ADDRS. */ | |
338 | struct section_addr_info * | |
339 | copy_section_addr_info (struct section_addr_info *addrs) | |
340 | { | |
341 | struct section_addr_info *copy | |
342 | = alloc_section_addr_info (addrs->num_sections); | |
343 | int i; | |
344 | ||
345 | copy->num_sections = addrs->num_sections; | |
346 | for (i = 0; i < addrs->num_sections; i++) | |
347 | { | |
348 | copy->other[i].addr = addrs->other[i].addr; | |
349 | if (addrs->other[i].name) | |
350 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
351 | else | |
352 | copy->other[i].name = NULL; | |
353 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
354 | } | |
355 | ||
356 | return copy; | |
357 | } | |
358 | ||
359 | ||
360 | ||
62557bbc KB |
361 | /* Build (allocate and populate) a section_addr_info struct from |
362 | an existing section table. */ | |
363 | ||
364 | extern struct section_addr_info * | |
0542c86d PA |
365 | build_section_addr_info_from_section_table (const struct target_section *start, |
366 | const struct target_section *end) | |
62557bbc KB |
367 | { |
368 | struct section_addr_info *sap; | |
0542c86d | 369 | const struct target_section *stp; |
62557bbc KB |
370 | int oidx; |
371 | ||
a39a16c4 | 372 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
373 | |
374 | for (stp = start, oidx = 0; stp != end; stp++) | |
375 | { | |
5417f6dc | 376 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 377 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 378 | && oidx < end - start) |
62557bbc KB |
379 | { |
380 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 381 | sap->other[oidx].name |
fbd35540 | 382 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
383 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
384 | oidx++; | |
385 | } | |
386 | } | |
387 | ||
388 | return sap; | |
389 | } | |
390 | ||
391 | ||
392 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
393 | ||
394 | extern void | |
395 | free_section_addr_info (struct section_addr_info *sap) | |
396 | { | |
397 | int idx; | |
398 | ||
a39a16c4 | 399 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 400 | if (sap->other[idx].name) |
b8c9b27d KB |
401 | xfree (sap->other[idx].name); |
402 | xfree (sap); | |
62557bbc KB |
403 | } |
404 | ||
405 | ||
e8289572 JB |
406 | /* Initialize OBJFILE's sect_index_* members. */ |
407 | static void | |
408 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 409 | { |
e8289572 | 410 | asection *sect; |
c906108c | 411 | int i; |
5417f6dc | 412 | |
b8fbeb18 | 413 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 414 | if (sect) |
b8fbeb18 EZ |
415 | objfile->sect_index_text = sect->index; |
416 | ||
417 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 418 | if (sect) |
b8fbeb18 EZ |
419 | objfile->sect_index_data = sect->index; |
420 | ||
421 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 422 | if (sect) |
b8fbeb18 EZ |
423 | objfile->sect_index_bss = sect->index; |
424 | ||
425 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 426 | if (sect) |
b8fbeb18 EZ |
427 | objfile->sect_index_rodata = sect->index; |
428 | ||
bbcd32ad FF |
429 | /* This is where things get really weird... We MUST have valid |
430 | indices for the various sect_index_* members or gdb will abort. | |
431 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
432 | accomodate that. First, check for a file with the standard |
433 | one or two segments. */ | |
434 | ||
435 | symfile_find_segment_sections (objfile); | |
436 | ||
437 | /* Except when explicitly adding symbol files at some address, | |
438 | section_offsets contains nothing but zeros, so it doesn't matter | |
439 | which slot in section_offsets the individual sect_index_* members | |
440 | index into. So if they are all zero, it is safe to just point | |
441 | all the currently uninitialized indices to the first slot. But | |
442 | beware: if this is the main executable, it may be relocated | |
443 | later, e.g. by the remote qOffsets packet, and then this will | |
444 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
445 | |
446 | for (i = 0; i < objfile->num_sections; i++) | |
447 | { | |
448 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
449 | { | |
450 | break; | |
451 | } | |
452 | } | |
453 | if (i == objfile->num_sections) | |
454 | { | |
455 | if (objfile->sect_index_text == -1) | |
456 | objfile->sect_index_text = 0; | |
457 | if (objfile->sect_index_data == -1) | |
458 | objfile->sect_index_data = 0; | |
459 | if (objfile->sect_index_bss == -1) | |
460 | objfile->sect_index_bss = 0; | |
461 | if (objfile->sect_index_rodata == -1) | |
462 | objfile->sect_index_rodata = 0; | |
463 | } | |
b8fbeb18 | 464 | } |
c906108c | 465 | |
c1bd25fd DJ |
466 | /* The arguments to place_section. */ |
467 | ||
468 | struct place_section_arg | |
469 | { | |
470 | struct section_offsets *offsets; | |
471 | CORE_ADDR lowest; | |
472 | }; | |
473 | ||
474 | /* Find a unique offset to use for loadable section SECT if | |
475 | the user did not provide an offset. */ | |
476 | ||
2c0b251b | 477 | static void |
c1bd25fd DJ |
478 | place_section (bfd *abfd, asection *sect, void *obj) |
479 | { | |
480 | struct place_section_arg *arg = obj; | |
481 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
482 | int done; | |
3bd72c6f | 483 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 484 | |
2711e456 DJ |
485 | /* We are only interested in allocated sections. */ |
486 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
487 | return; |
488 | ||
489 | /* If the user specified an offset, honor it. */ | |
490 | if (offsets[sect->index] != 0) | |
491 | return; | |
492 | ||
493 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
494 | start_addr = (arg->lowest + align - 1) & -align; |
495 | ||
c1bd25fd DJ |
496 | do { |
497 | asection *cur_sec; | |
c1bd25fd | 498 | |
c1bd25fd DJ |
499 | done = 1; |
500 | ||
501 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
502 | { | |
503 | int indx = cur_sec->index; | |
504 | CORE_ADDR cur_offset; | |
505 | ||
506 | /* We don't need to compare against ourself. */ | |
507 | if (cur_sec == sect) | |
508 | continue; | |
509 | ||
2711e456 DJ |
510 | /* We can only conflict with allocated sections. */ |
511 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
512 | continue; |
513 | ||
514 | /* If the section offset is 0, either the section has not been placed | |
515 | yet, or it was the lowest section placed (in which case LOWEST | |
516 | will be past its end). */ | |
517 | if (offsets[indx] == 0) | |
518 | continue; | |
519 | ||
520 | /* If this section would overlap us, then we must move up. */ | |
521 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
522 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
523 | { | |
524 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
525 | start_addr = (start_addr + align - 1) & -align; | |
526 | done = 0; | |
3bd72c6f | 527 | break; |
c1bd25fd DJ |
528 | } |
529 | ||
530 | /* Otherwise, we appear to be OK. So far. */ | |
531 | } | |
532 | } | |
533 | while (!done); | |
534 | ||
535 | offsets[sect->index] = start_addr; | |
536 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 537 | } |
e8289572 JB |
538 | |
539 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 540 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
541 | version of the sym_fns.sym_offsets function for symbol readers that |
542 | don't need to do anything special. It allocates a section_offsets table | |
543 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
544 | ||
545 | void | |
546 | default_symfile_offsets (struct objfile *objfile, | |
547 | struct section_addr_info *addrs) | |
548 | { | |
549 | int i; | |
550 | ||
a39a16c4 | 551 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 552 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 553 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 554 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 555 | memset (objfile->section_offsets, 0, |
a39a16c4 | 556 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
557 | |
558 | /* Now calculate offsets for section that were specified by the | |
559 | caller. */ | |
a39a16c4 | 560 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
561 | { |
562 | struct other_sections *osp ; | |
563 | ||
564 | osp = &addrs->other[i] ; | |
565 | if (osp->addr == 0) | |
566 | continue; | |
567 | ||
568 | /* Record all sections in offsets */ | |
569 | /* The section_offsets in the objfile are here filled in using | |
570 | the BFD index. */ | |
571 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
572 | } | |
573 | ||
c1bd25fd DJ |
574 | /* For relocatable files, all loadable sections will start at zero. |
575 | The zero is meaningless, so try to pick arbitrary addresses such | |
576 | that no loadable sections overlap. This algorithm is quadratic, | |
577 | but the number of sections in a single object file is generally | |
578 | small. */ | |
579 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
580 | { | |
581 | struct place_section_arg arg; | |
2711e456 DJ |
582 | bfd *abfd = objfile->obfd; |
583 | asection *cur_sec; | |
584 | CORE_ADDR lowest = 0; | |
585 | ||
586 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
587 | /* We do not expect this to happen; just skip this step if the | |
588 | relocatable file has a section with an assigned VMA. */ | |
589 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
590 | break; | |
591 | ||
592 | if (cur_sec == NULL) | |
593 | { | |
594 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
595 | ||
596 | /* Pick non-overlapping offsets for sections the user did not | |
597 | place explicitly. */ | |
598 | arg.offsets = objfile->section_offsets; | |
599 | arg.lowest = 0; | |
600 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
601 | ||
602 | /* Correctly filling in the section offsets is not quite | |
603 | enough. Relocatable files have two properties that | |
604 | (most) shared objects do not: | |
605 | ||
606 | - Their debug information will contain relocations. Some | |
607 | shared libraries do also, but many do not, so this can not | |
608 | be assumed. | |
609 | ||
610 | - If there are multiple code sections they will be loaded | |
611 | at different relative addresses in memory than they are | |
612 | in the objfile, since all sections in the file will start | |
613 | at address zero. | |
614 | ||
615 | Because GDB has very limited ability to map from an | |
616 | address in debug info to the correct code section, | |
617 | it relies on adding SECT_OFF_TEXT to things which might be | |
618 | code. If we clear all the section offsets, and set the | |
619 | section VMAs instead, then symfile_relocate_debug_section | |
620 | will return meaningful debug information pointing at the | |
621 | correct sections. | |
622 | ||
623 | GDB has too many different data structures for section | |
624 | addresses - a bfd, objfile, and so_list all have section | |
625 | tables, as does exec_ops. Some of these could probably | |
626 | be eliminated. */ | |
627 | ||
628 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
629 | cur_sec = cur_sec->next) | |
630 | { | |
631 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
632 | continue; | |
633 | ||
634 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
30510692 DJ |
635 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
636 | offsets[cur_sec->index]); | |
2711e456 DJ |
637 | offsets[cur_sec->index] = 0; |
638 | } | |
639 | } | |
c1bd25fd DJ |
640 | } |
641 | ||
e8289572 JB |
642 | /* Remember the bfd indexes for the .text, .data, .bss and |
643 | .rodata sections. */ | |
644 | init_objfile_sect_indices (objfile); | |
645 | } | |
646 | ||
647 | ||
31d99776 DJ |
648 | /* Divide the file into segments, which are individual relocatable units. |
649 | This is the default version of the sym_fns.sym_segments function for | |
650 | symbol readers that do not have an explicit representation of segments. | |
651 | It assumes that object files do not have segments, and fully linked | |
652 | files have a single segment. */ | |
653 | ||
654 | struct symfile_segment_data * | |
655 | default_symfile_segments (bfd *abfd) | |
656 | { | |
657 | int num_sections, i; | |
658 | asection *sect; | |
659 | struct symfile_segment_data *data; | |
660 | CORE_ADDR low, high; | |
661 | ||
662 | /* Relocatable files contain enough information to position each | |
663 | loadable section independently; they should not be relocated | |
664 | in segments. */ | |
665 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
666 | return NULL; | |
667 | ||
668 | /* Make sure there is at least one loadable section in the file. */ | |
669 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
670 | { | |
671 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
672 | continue; | |
673 | ||
674 | break; | |
675 | } | |
676 | if (sect == NULL) | |
677 | return NULL; | |
678 | ||
679 | low = bfd_get_section_vma (abfd, sect); | |
680 | high = low + bfd_get_section_size (sect); | |
681 | ||
682 | data = XZALLOC (struct symfile_segment_data); | |
683 | data->num_segments = 1; | |
684 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
685 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
686 | ||
687 | num_sections = bfd_count_sections (abfd); | |
688 | data->segment_info = XCALLOC (num_sections, int); | |
689 | ||
690 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
691 | { | |
692 | CORE_ADDR vma; | |
693 | ||
694 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
695 | continue; | |
696 | ||
697 | vma = bfd_get_section_vma (abfd, sect); | |
698 | if (vma < low) | |
699 | low = vma; | |
700 | if (vma + bfd_get_section_size (sect) > high) | |
701 | high = vma + bfd_get_section_size (sect); | |
702 | ||
703 | data->segment_info[i] = 1; | |
704 | } | |
705 | ||
706 | data->segment_bases[0] = low; | |
707 | data->segment_sizes[0] = high - low; | |
708 | ||
709 | return data; | |
710 | } | |
711 | ||
c906108c SS |
712 | /* Process a symbol file, as either the main file or as a dynamically |
713 | loaded file. | |
714 | ||
96baa820 JM |
715 | OBJFILE is where the symbols are to be read from. |
716 | ||
7e8580c1 JB |
717 | ADDRS is the list of section load addresses. If the user has given |
718 | an 'add-symbol-file' command, then this is the list of offsets and | |
719 | addresses he or she provided as arguments to the command; or, if | |
720 | we're handling a shared library, these are the actual addresses the | |
721 | sections are loaded at, according to the inferior's dynamic linker | |
722 | (as gleaned by GDB's shared library code). We convert each address | |
723 | into an offset from the section VMA's as it appears in the object | |
724 | file, and then call the file's sym_offsets function to convert this | |
725 | into a format-specific offset table --- a `struct section_offsets'. | |
726 | If ADDRS is non-zero, OFFSETS must be zero. | |
727 | ||
728 | OFFSETS is a table of section offsets already in the right | |
729 | format-specific representation. NUM_OFFSETS is the number of | |
730 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
731 | assume this is the proper table the call to sym_offsets described | |
732 | above would produce. Instead of calling sym_offsets, we just dump | |
733 | it right into objfile->section_offsets. (When we're re-reading | |
734 | symbols from an objfile, we don't have the original load address | |
735 | list any more; all we have is the section offset table.) If | |
736 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 737 | |
7eedccfa PP |
738 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
739 | an extra symbol file such as dynamically loaded code, and wether | |
740 | breakpoint reset should be deferred. */ | |
c906108c SS |
741 | |
742 | void | |
7e8580c1 JB |
743 | syms_from_objfile (struct objfile *objfile, |
744 | struct section_addr_info *addrs, | |
745 | struct section_offsets *offsets, | |
746 | int num_offsets, | |
7eedccfa | 747 | int add_flags) |
c906108c | 748 | { |
a39a16c4 | 749 | struct section_addr_info *local_addr = NULL; |
c906108c | 750 | struct cleanup *old_chain; |
7eedccfa | 751 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 752 | |
7e8580c1 | 753 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 754 | |
c906108c | 755 | init_entry_point_info (objfile); |
31d99776 | 756 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 757 | |
75245b24 MS |
758 | if (objfile->sf == NULL) |
759 | return; /* No symbols. */ | |
760 | ||
c906108c SS |
761 | /* Make sure that partially constructed symbol tables will be cleaned up |
762 | if an error occurs during symbol reading. */ | |
74b7792f | 763 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 764 | |
a39a16c4 MM |
765 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
766 | list. We now establish the convention that an addr of zero means | |
767 | no load address was specified. */ | |
768 | if (! addrs && ! offsets) | |
769 | { | |
5417f6dc | 770 | local_addr |
a39a16c4 MM |
771 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
772 | make_cleanup (xfree, local_addr); | |
773 | addrs = local_addr; | |
774 | } | |
775 | ||
776 | /* Now either addrs or offsets is non-zero. */ | |
777 | ||
c5aa993b | 778 | if (mainline) |
c906108c SS |
779 | { |
780 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 781 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 782 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
783 | |
784 | /* Since no error yet, throw away the old symbol table. */ | |
785 | ||
786 | if (symfile_objfile != NULL) | |
787 | { | |
788 | free_objfile (symfile_objfile); | |
adb7f338 | 789 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
790 | } |
791 | ||
792 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
793 | If the user wants to get rid of them, they should do "symbol-file" |
794 | without arguments first. Not sure this is the best behavior | |
795 | (PR 2207). */ | |
c906108c | 796 | |
c5aa993b | 797 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
798 | } |
799 | ||
800 | /* Convert addr into an offset rather than an absolute address. | |
801 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 802 | and assume that <addr> is where that got loaded. |
c906108c | 803 | |
53a5351d JM |
804 | We no longer warn if the lowest section is not a text segment (as |
805 | happens for the PA64 port. */ | |
1549f619 | 806 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 807 | { |
1549f619 EZ |
808 | asection *lower_sect; |
809 | asection *sect; | |
810 | CORE_ADDR lower_offset; | |
811 | int i; | |
812 | ||
5417f6dc | 813 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
814 | continguous sections. FIXME!! won't work without call to find |
815 | .text first, but this assumes text is lowest section. */ | |
816 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
817 | if (lower_sect == NULL) | |
c906108c | 818 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 819 | &lower_sect); |
2acceee2 | 820 | if (lower_sect == NULL) |
ff8e85c3 PA |
821 | { |
822 | warning (_("no loadable sections found in added symbol-file %s"), | |
823 | objfile->name); | |
824 | lower_offset = 0; | |
825 | } | |
2acceee2 | 826 | else |
ff8e85c3 | 827 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); |
5417f6dc | 828 | |
13de58df | 829 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
830 | FIXME! Sections must be in order of increasing loadable section |
831 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 832 | |
13de58df JB |
833 | Adjust offsets if the segments are not contiguous. |
834 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
835 | the offset of the highest loadable section lower than it |
836 | (the loadable section directly below it in memory). | |
837 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
838 | ||
1549f619 | 839 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
840 | { |
841 | if (addrs->other[i].addr != 0) | |
842 | { | |
843 | sect = bfd_get_section_by_name (objfile->obfd, | |
844 | addrs->other[i].name); | |
845 | if (sect) | |
846 | { | |
847 | addrs->other[i].addr | |
848 | -= bfd_section_vma (objfile->obfd, sect); | |
849 | lower_offset = addrs->other[i].addr; | |
850 | /* This is the index used by BFD. */ | |
851 | addrs->other[i].sectindex = sect->index ; | |
852 | } | |
853 | else | |
854 | { | |
8a3fe4f8 | 855 | warning (_("section %s not found in %s"), |
5417f6dc | 856 | addrs->other[i].name, |
7e8580c1 JB |
857 | objfile->name); |
858 | addrs->other[i].addr = 0; | |
859 | } | |
860 | } | |
861 | else | |
862 | addrs->other[i].addr = lower_offset; | |
863 | } | |
c906108c SS |
864 | } |
865 | ||
866 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
867 | appear for this new file, and record how verbose to be, then do the | |
868 | initial symbol reading for this file. */ | |
869 | ||
c5aa993b | 870 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 871 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 872 | |
7e8580c1 JB |
873 | if (addrs) |
874 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
875 | else | |
876 | { | |
877 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
878 | ||
879 | /* Just copy in the offset table directly as given to us. */ | |
880 | objfile->num_sections = num_offsets; | |
881 | objfile->section_offsets | |
882 | = ((struct section_offsets *) | |
8b92e4d5 | 883 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
884 | memcpy (objfile->section_offsets, offsets, size); |
885 | ||
886 | init_objfile_sect_indices (objfile); | |
887 | } | |
c906108c | 888 | |
96baa820 | 889 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 890 | |
c906108c SS |
891 | /* Discard cleanups as symbol reading was successful. */ |
892 | ||
893 | discard_cleanups (old_chain); | |
f7545552 | 894 | xfree (local_addr); |
c906108c SS |
895 | } |
896 | ||
897 | /* Perform required actions after either reading in the initial | |
898 | symbols for a new objfile, or mapping in the symbols from a reusable | |
899 | objfile. */ | |
c5aa993b | 900 | |
c906108c | 901 | void |
7eedccfa | 902 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c SS |
903 | { |
904 | ||
905 | /* If this is the main symbol file we have to clean up all users of the | |
906 | old main symbol file. Otherwise it is sufficient to fixup all the | |
907 | breakpoints that may have been redefined by this symbol file. */ | |
7eedccfa | 908 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
909 | { |
910 | /* OK, make it the "real" symbol file. */ | |
911 | symfile_objfile = objfile; | |
912 | ||
913 | clear_symtab_users (); | |
914 | } | |
7eedccfa | 915 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 916 | { |
69de3c6a | 917 | breakpoint_re_set (); |
c906108c SS |
918 | } |
919 | ||
920 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 921 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
922 | } |
923 | ||
924 | /* Process a symbol file, as either the main file or as a dynamically | |
925 | loaded file. | |
926 | ||
5417f6dc RM |
927 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
928 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 929 | |
7eedccfa PP |
930 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
931 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
932 | |
933 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
934 | syms_from_objfile, above. |
935 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 936 | |
c906108c SS |
937 | Upon success, returns a pointer to the objfile that was added. |
938 | Upon failure, jumps back to command level (never returns). */ | |
7eedccfa | 939 | |
7904e09f | 940 | static struct objfile * |
7eedccfa PP |
941 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
942 | int add_flags, | |
7904e09f JB |
943 | struct section_addr_info *addrs, |
944 | struct section_offsets *offsets, | |
945 | int num_offsets, | |
7eedccfa | 946 | int flags) |
c906108c SS |
947 | { |
948 | struct objfile *objfile; | |
949 | struct partial_symtab *psymtab; | |
77069918 | 950 | char *debugfile = NULL; |
7b90c3f9 | 951 | struct section_addr_info *orig_addrs = NULL; |
a39a16c4 | 952 | struct cleanup *my_cleanups; |
5417f6dc | 953 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 954 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
c906108c | 955 | |
5417f6dc | 956 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 957 | |
5417f6dc RM |
958 | /* Give user a chance to burp if we'd be |
959 | interactively wiping out any existing symbols. */ | |
c906108c SS |
960 | |
961 | if ((have_full_symbols () || have_partial_symbols ()) | |
7eedccfa | 962 | && (add_flags & SYMFILE_MAINLINE) |
c906108c | 963 | && from_tty |
9e2f0ad4 | 964 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 965 | error (_("Not confirmed.")); |
c906108c | 966 | |
2df3850c | 967 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 968 | discard_cleanups (my_cleanups); |
c906108c | 969 | |
a39a16c4 | 970 | if (addrs) |
63cd24fe | 971 | { |
7b90c3f9 JB |
972 | orig_addrs = copy_section_addr_info (addrs); |
973 | make_cleanup_free_section_addr_info (orig_addrs); | |
63cd24fe | 974 | } |
a39a16c4 | 975 | |
78a4a9b9 AC |
976 | /* We either created a new mapped symbol table, mapped an existing |
977 | symbol table file which has not had initial symbol reading | |
978 | performed, or need to read an unmapped symbol table. */ | |
979 | if (from_tty || info_verbose) | |
c906108c | 980 | { |
769d7dc4 AC |
981 | if (deprecated_pre_add_symbol_hook) |
982 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 983 | else |
c906108c | 984 | { |
55333a84 DE |
985 | printf_unfiltered (_("Reading symbols from %s..."), name); |
986 | wrap_here (""); | |
987 | gdb_flush (gdb_stdout); | |
c906108c | 988 | } |
c906108c | 989 | } |
78a4a9b9 | 990 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 991 | add_flags); |
c906108c SS |
992 | |
993 | /* We now have at least a partial symbol table. Check to see if the | |
994 | user requested that all symbols be read on initial access via either | |
995 | the gdb startup command line or on a per symbol file basis. Expand | |
996 | all partial symbol tables for this objfile if so. */ | |
997 | ||
2acceee2 | 998 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 999 | { |
55333a84 | 1000 | if (from_tty || info_verbose) |
c906108c | 1001 | { |
a3f17187 | 1002 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1003 | wrap_here (""); |
1004 | gdb_flush (gdb_stdout); | |
1005 | } | |
1006 | ||
c5aa993b | 1007 | for (psymtab = objfile->psymtabs; |
c906108c | 1008 | psymtab != NULL; |
c5aa993b | 1009 | psymtab = psymtab->next) |
c906108c SS |
1010 | { |
1011 | psymtab_to_symtab (psymtab); | |
1012 | } | |
1013 | } | |
1014 | ||
77069918 JK |
1015 | /* If the file has its own symbol tables it has no separate debug info. |
1016 | `.dynsym'/`.symtab' go to MSYMBOLS, `.debug_info' goes to SYMTABS/PSYMTABS. | |
1017 | `.gnu_debuglink' may no longer be present with `.note.gnu.build-id'. */ | |
1018 | if (objfile->psymtabs == NULL) | |
1019 | debugfile = find_separate_debug_file (objfile); | |
5b5d99cf JB |
1020 | if (debugfile) |
1021 | { | |
5b5d99cf JB |
1022 | if (addrs != NULL) |
1023 | { | |
1024 | objfile->separate_debug_objfile | |
7eedccfa | 1025 | = symbol_file_add (debugfile, add_flags, orig_addrs, flags); |
5b5d99cf JB |
1026 | } |
1027 | else | |
1028 | { | |
1029 | objfile->separate_debug_objfile | |
7eedccfa | 1030 | = symbol_file_add (debugfile, add_flags, NULL, flags); |
5b5d99cf JB |
1031 | } |
1032 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
1033 | = objfile; | |
5417f6dc | 1034 | |
5b5d99cf JB |
1035 | /* Put the separate debug object before the normal one, this is so that |
1036 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
1037 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
5417f6dc | 1038 | |
5b5d99cf JB |
1039 | xfree (debugfile); |
1040 | } | |
5417f6dc | 1041 | |
55333a84 | 1042 | if ((from_tty || info_verbose) |
e361b228 | 1043 | && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1044 | { |
1045 | wrap_here (""); | |
55333a84 | 1046 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1047 | wrap_here (""); |
1048 | } | |
1049 | ||
c906108c SS |
1050 | if (from_tty || info_verbose) |
1051 | { | |
769d7dc4 AC |
1052 | if (deprecated_post_add_symbol_hook) |
1053 | deprecated_post_add_symbol_hook (); | |
c906108c | 1054 | else |
55333a84 | 1055 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1056 | } |
1057 | ||
481d0f41 JB |
1058 | /* We print some messages regardless of whether 'from_tty || |
1059 | info_verbose' is true, so make sure they go out at the right | |
1060 | time. */ | |
1061 | gdb_flush (gdb_stdout); | |
1062 | ||
a39a16c4 MM |
1063 | do_cleanups (my_cleanups); |
1064 | ||
109f874e | 1065 | if (objfile->sf == NULL) |
8caee43b PP |
1066 | { |
1067 | observer_notify_new_objfile (objfile); | |
1068 | return objfile; /* No symbols. */ | |
1069 | } | |
109f874e | 1070 | |
7eedccfa | 1071 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1072 | |
06d3b283 | 1073 | observer_notify_new_objfile (objfile); |
c906108c | 1074 | |
ce7d4522 | 1075 | bfd_cache_close_all (); |
c906108c SS |
1076 | return (objfile); |
1077 | } | |
1078 | ||
7904e09f | 1079 | |
eb4556d7 JB |
1080 | /* Process the symbol file ABFD, as either the main file or as a |
1081 | dynamically loaded file. | |
1082 | ||
1083 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1084 | details. */ | |
1085 | struct objfile * | |
7eedccfa | 1086 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1087 | struct section_addr_info *addrs, |
7eedccfa | 1088 | int flags) |
eb4556d7 | 1089 | { |
7eedccfa PP |
1090 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
1091 | flags); | |
eb4556d7 JB |
1092 | } |
1093 | ||
1094 | ||
7904e09f JB |
1095 | /* Process a symbol file, as either the main file or as a dynamically |
1096 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1097 | for details. */ | |
1098 | struct objfile * | |
7eedccfa PP |
1099 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1100 | int flags) | |
7904e09f | 1101 | { |
7eedccfa PP |
1102 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
1103 | flags); | |
7904e09f JB |
1104 | } |
1105 | ||
1106 | ||
d7db6da9 FN |
1107 | /* Call symbol_file_add() with default values and update whatever is |
1108 | affected by the loading of a new main(). | |
1109 | Used when the file is supplied in the gdb command line | |
1110 | and by some targets with special loading requirements. | |
1111 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1112 | argument for the switches that can only be specified in the symbol_file | |
1113 | command itself. */ | |
5417f6dc | 1114 | |
1adeb98a FN |
1115 | void |
1116 | symbol_file_add_main (char *args, int from_tty) | |
1117 | { | |
d7db6da9 FN |
1118 | symbol_file_add_main_1 (args, from_tty, 0); |
1119 | } | |
1120 | ||
1121 | static void | |
1122 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1123 | { | |
7eedccfa PP |
1124 | const int add_flags = SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0); |
1125 | symbol_file_add (args, add_flags, NULL, flags); | |
d7db6da9 | 1126 | |
d7db6da9 FN |
1127 | /* Getting new symbols may change our opinion about |
1128 | what is frameless. */ | |
1129 | reinit_frame_cache (); | |
1130 | ||
1131 | set_initial_language (); | |
1adeb98a FN |
1132 | } |
1133 | ||
1134 | void | |
1135 | symbol_file_clear (int from_tty) | |
1136 | { | |
1137 | if ((have_full_symbols () || have_partial_symbols ()) | |
1138 | && from_tty | |
0430b0d6 AS |
1139 | && (symfile_objfile |
1140 | ? !query (_("Discard symbol table from `%s'? "), | |
1141 | symfile_objfile->name) | |
1142 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1143 | error (_("Not confirmed.")); |
1adeb98a | 1144 | |
d10c338d | 1145 | free_all_objfiles (); |
1adeb98a | 1146 | |
d10c338d DE |
1147 | /* solib descriptors may have handles to objfiles. Since their |
1148 | storage has just been released, we'd better wipe the solib | |
1149 | descriptors as well. */ | |
1150 | no_shared_libraries (NULL, from_tty); | |
1151 | ||
adb7f338 | 1152 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1153 | if (from_tty) |
1154 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1155 | } |
1156 | ||
77069918 JK |
1157 | struct build_id |
1158 | { | |
1159 | size_t size; | |
1160 | gdb_byte data[1]; | |
1161 | }; | |
1162 | ||
1163 | /* Locate NT_GNU_BUILD_ID from ABFD and return its content. */ | |
1164 | ||
1165 | static struct build_id * | |
1166 | build_id_bfd_get (bfd *abfd) | |
1167 | { | |
1168 | struct build_id *retval; | |
1169 | ||
1170 | if (!bfd_check_format (abfd, bfd_object) | |
1171 | || bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1172 | || elf_tdata (abfd)->build_id == NULL) | |
1173 | return NULL; | |
1174 | ||
1175 | retval = xmalloc (sizeof *retval - 1 + elf_tdata (abfd)->build_id_size); | |
1176 | retval->size = elf_tdata (abfd)->build_id_size; | |
1177 | memcpy (retval->data, elf_tdata (abfd)->build_id, retval->size); | |
1178 | ||
1179 | return retval; | |
1180 | } | |
1181 | ||
1182 | /* Return if FILENAME has NT_GNU_BUILD_ID matching the CHECK value. */ | |
1183 | ||
1184 | static int | |
1185 | build_id_verify (const char *filename, struct build_id *check) | |
1186 | { | |
1187 | bfd *abfd; | |
1188 | struct build_id *found = NULL; | |
1189 | int retval = 0; | |
1190 | ||
1191 | /* We expect to be silent on the non-existing files. */ | |
f1838a98 UW |
1192 | if (remote_filename_p (filename)) |
1193 | abfd = remote_bfd_open (filename, gnutarget); | |
1194 | else | |
1195 | abfd = bfd_openr (filename, gnutarget); | |
77069918 JK |
1196 | if (abfd == NULL) |
1197 | return 0; | |
1198 | ||
1199 | found = build_id_bfd_get (abfd); | |
1200 | ||
1201 | if (found == NULL) | |
1202 | warning (_("File \"%s\" has no build-id, file skipped"), filename); | |
1203 | else if (found->size != check->size | |
1204 | || memcmp (found->data, check->data, found->size) != 0) | |
1205 | warning (_("File \"%s\" has a different build-id, file skipped"), filename); | |
1206 | else | |
1207 | retval = 1; | |
1208 | ||
1209 | if (!bfd_close (abfd)) | |
1210 | warning (_("cannot close \"%s\": %s"), filename, | |
1211 | bfd_errmsg (bfd_get_error ())); | |
bb01da77 TT |
1212 | |
1213 | xfree (found); | |
1214 | ||
77069918 JK |
1215 | return retval; |
1216 | } | |
1217 | ||
1218 | static char * | |
1219 | build_id_to_debug_filename (struct build_id *build_id) | |
1220 | { | |
24ddea62 | 1221 | char *link, *debugdir, *retval = NULL; |
77069918 JK |
1222 | |
1223 | /* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */ | |
24ddea62 JK |
1224 | link = alloca (strlen (debug_file_directory) + (sizeof "/.build-id/" - 1) + 1 |
1225 | + 2 * build_id->size + (sizeof ".debug" - 1) + 1); | |
1226 | ||
1227 | /* Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1228 | cause "/.build-id/..." lookups. */ | |
1229 | ||
1230 | debugdir = debug_file_directory; | |
1231 | do | |
77069918 | 1232 | { |
24ddea62 JK |
1233 | char *s, *debugdir_end; |
1234 | gdb_byte *data = build_id->data; | |
1235 | size_t size = build_id->size; | |
1236 | ||
1237 | while (*debugdir == DIRNAME_SEPARATOR) | |
1238 | debugdir++; | |
1239 | ||
1240 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1241 | if (debugdir_end == NULL) | |
1242 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1243 | ||
1244 | memcpy (link, debugdir, debugdir_end - debugdir); | |
1245 | s = &link[debugdir_end - debugdir]; | |
1246 | s += sprintf (s, "/.build-id/"); | |
1247 | if (size > 0) | |
1248 | { | |
1249 | size--; | |
1250 | s += sprintf (s, "%02x", (unsigned) *data++); | |
1251 | } | |
1252 | if (size > 0) | |
1253 | *s++ = '/'; | |
1254 | while (size-- > 0) | |
1255 | s += sprintf (s, "%02x", (unsigned) *data++); | |
1256 | strcpy (s, ".debug"); | |
1257 | ||
1258 | /* lrealpath() is expensive even for the usually non-existent files. */ | |
1259 | if (access (link, F_OK) == 0) | |
1260 | retval = lrealpath (link); | |
1261 | ||
1262 | if (retval != NULL && !build_id_verify (retval, build_id)) | |
1263 | { | |
1264 | xfree (retval); | |
1265 | retval = NULL; | |
1266 | } | |
1267 | ||
1268 | if (retval != NULL) | |
1269 | break; | |
1270 | ||
1271 | debugdir = debugdir_end; | |
77069918 | 1272 | } |
24ddea62 | 1273 | while (*debugdir != 0); |
77069918 JK |
1274 | |
1275 | return retval; | |
1276 | } | |
1277 | ||
5b5d99cf JB |
1278 | static char * |
1279 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1280 | { | |
1281 | asection *sect; | |
1282 | bfd_size_type debuglink_size; | |
1283 | unsigned long crc32; | |
1284 | char *contents; | |
1285 | int crc_offset; | |
1286 | unsigned char *p; | |
5417f6dc | 1287 | |
5b5d99cf JB |
1288 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1289 | ||
1290 | if (sect == NULL) | |
1291 | return NULL; | |
1292 | ||
1293 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1294 | |
5b5d99cf JB |
1295 | contents = xmalloc (debuglink_size); |
1296 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1297 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1298 | ||
1299 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1300 | crc_offset = strlen (contents) + 1; | |
1301 | crc_offset = (crc_offset + 3) & ~3; | |
1302 | ||
1303 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1304 | |
5b5d99cf JB |
1305 | *crc32_out = crc32; |
1306 | return contents; | |
1307 | } | |
1308 | ||
1309 | static int | |
287ccc17 JK |
1310 | separate_debug_file_exists (const char *name, unsigned long crc, |
1311 | const char *parent_name) | |
5b5d99cf JB |
1312 | { |
1313 | unsigned long file_crc = 0; | |
f1838a98 | 1314 | bfd *abfd; |
777ea8f1 | 1315 | gdb_byte buffer[8*1024]; |
5b5d99cf JB |
1316 | int count; |
1317 | ||
f1838a98 UW |
1318 | if (remote_filename_p (name)) |
1319 | abfd = remote_bfd_open (name, gnutarget); | |
1320 | else | |
1321 | abfd = bfd_openr (name, gnutarget); | |
1322 | ||
1323 | if (!abfd) | |
5b5d99cf JB |
1324 | return 0; |
1325 | ||
f1838a98 | 1326 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1327 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1328 | ||
f1838a98 | 1329 | bfd_close (abfd); |
5b5d99cf | 1330 | |
287ccc17 JK |
1331 | if (crc != file_crc) |
1332 | { | |
1333 | warning (_("the debug information found in \"%s\"" | |
1334 | " does not match \"%s\" (CRC mismatch).\n"), | |
1335 | name, parent_name); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | return 1; | |
5b5d99cf JB |
1340 | } |
1341 | ||
aa28a74e | 1342 | char *debug_file_directory = NULL; |
920d2a44 AC |
1343 | static void |
1344 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1345 | struct cmd_list_element *c, const char *value) | |
1346 | { | |
1347 | fprintf_filtered (file, _("\ | |
1348 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1349 | value); | |
1350 | } | |
5b5d99cf JB |
1351 | |
1352 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1353 | #define DEBUG_SUBDIRECTORY ".debug" | |
1354 | #endif | |
1355 | ||
1356 | static char * | |
1357 | find_separate_debug_file (struct objfile *objfile) | |
1358 | { | |
1359 | asection *sect; | |
24ddea62 | 1360 | char *basename, *name_copy, *debugdir; |
25522fae JK |
1361 | char *dir = NULL; |
1362 | char *debugfile = NULL; | |
1363 | char *canon_name = NULL; | |
5b5d99cf JB |
1364 | bfd_size_type debuglink_size; |
1365 | unsigned long crc32; | |
1366 | int i; | |
77069918 JK |
1367 | struct build_id *build_id; |
1368 | ||
1369 | build_id = build_id_bfd_get (objfile->obfd); | |
1370 | if (build_id != NULL) | |
1371 | { | |
1372 | char *build_id_name; | |
1373 | ||
1374 | build_id_name = build_id_to_debug_filename (build_id); | |
bb01da77 | 1375 | xfree (build_id); |
77069918 JK |
1376 | /* Prevent looping on a stripped .debug file. */ |
1377 | if (build_id_name != NULL && strcmp (build_id_name, objfile->name) == 0) | |
1378 | { | |
1379 | warning (_("\"%s\": separate debug info file has no debug info"), | |
1380 | build_id_name); | |
1381 | xfree (build_id_name); | |
1382 | } | |
1383 | else if (build_id_name != NULL) | |
1384 | return build_id_name; | |
1385 | } | |
5b5d99cf JB |
1386 | |
1387 | basename = get_debug_link_info (objfile, &crc32); | |
1388 | ||
1389 | if (basename == NULL) | |
287ccc17 JK |
1390 | /* There's no separate debug info, hence there's no way we could |
1391 | load it => no warning. */ | |
25522fae | 1392 | goto cleanup_return_debugfile; |
5417f6dc | 1393 | |
5b5d99cf JB |
1394 | dir = xstrdup (objfile->name); |
1395 | ||
fe36c4f4 JB |
1396 | /* Strip off the final filename part, leaving the directory name, |
1397 | followed by a slash. Objfile names should always be absolute and | |
1398 | tilde-expanded, so there should always be a slash in there | |
1399 | somewhere. */ | |
5b5d99cf JB |
1400 | for (i = strlen(dir) - 1; i >= 0; i--) |
1401 | { | |
1402 | if (IS_DIR_SEPARATOR (dir[i])) | |
1403 | break; | |
1404 | } | |
fe36c4f4 | 1405 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1406 | dir[i+1] = '\0'; |
5417f6dc | 1407 | |
1ffa32ee JK |
1408 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1409 | canon_name = lrealpath (dir); | |
1410 | i = strlen (dir); | |
1411 | if (canon_name && strlen (canon_name) > i) | |
1412 | i = strlen (canon_name); | |
1413 | ||
25522fae JK |
1414 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1415 | + i | |
1416 | + strlen (DEBUG_SUBDIRECTORY) | |
1417 | + strlen ("/") | |
1418 | + strlen (basename) | |
1419 | + 1); | |
5b5d99cf JB |
1420 | |
1421 | /* First try in the same directory as the original file. */ | |
1422 | strcpy (debugfile, dir); | |
1423 | strcat (debugfile, basename); | |
1424 | ||
287ccc17 | 1425 | if (separate_debug_file_exists (debugfile, crc32, objfile->name)) |
25522fae | 1426 | goto cleanup_return_debugfile; |
5417f6dc | 1427 | |
5b5d99cf JB |
1428 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1429 | strcpy (debugfile, dir); | |
1430 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1431 | strcat (debugfile, "/"); | |
1432 | strcat (debugfile, basename); | |
1433 | ||
287ccc17 | 1434 | if (separate_debug_file_exists (debugfile, crc32, objfile->name)) |
25522fae | 1435 | goto cleanup_return_debugfile; |
5417f6dc | 1436 | |
24ddea62 JK |
1437 | /* Then try in the global debugfile directories. |
1438 | ||
1439 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1440 | cause "/..." lookups. */ | |
5417f6dc | 1441 | |
24ddea62 JK |
1442 | debugdir = debug_file_directory; |
1443 | do | |
aa28a74e | 1444 | { |
24ddea62 JK |
1445 | char *debugdir_end; |
1446 | ||
1447 | while (*debugdir == DIRNAME_SEPARATOR) | |
1448 | debugdir++; | |
1449 | ||
1450 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1451 | if (debugdir_end == NULL) | |
1452 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1453 | ||
1454 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1455 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1456 | strcat (debugfile, "/"); |
24ddea62 | 1457 | strcat (debugfile, dir); |
aa28a74e DJ |
1458 | strcat (debugfile, basename); |
1459 | ||
287ccc17 | 1460 | if (separate_debug_file_exists (debugfile, crc32, objfile->name)) |
25522fae | 1461 | goto cleanup_return_debugfile; |
24ddea62 JK |
1462 | |
1463 | /* If the file is in the sysroot, try using its base path in the | |
1464 | global debugfile directory. */ | |
1465 | if (canon_name | |
1466 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1467 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1468 | { | |
1469 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1470 | debugfile[debugdir_end - debugdir] = 0; | |
1471 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1472 | strcat (debugfile, "/"); | |
1473 | strcat (debugfile, basename); | |
1474 | ||
1475 | if (separate_debug_file_exists (debugfile, crc32, objfile->name)) | |
1476 | goto cleanup_return_debugfile; | |
1477 | } | |
1478 | ||
1479 | debugdir = debugdir_end; | |
aa28a74e | 1480 | } |
24ddea62 | 1481 | while (*debugdir != 0); |
aa28a74e | 1482 | |
25522fae JK |
1483 | xfree (debugfile); |
1484 | debugfile = NULL; | |
aa28a74e | 1485 | |
25522fae JK |
1486 | cleanup_return_debugfile: |
1487 | xfree (canon_name); | |
5b5d99cf JB |
1488 | xfree (basename); |
1489 | xfree (dir); | |
25522fae | 1490 | return debugfile; |
5b5d99cf JB |
1491 | } |
1492 | ||
1493 | ||
c906108c SS |
1494 | /* This is the symbol-file command. Read the file, analyze its |
1495 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1496 | the command is rather bizarre: |
1497 | ||
1498 | 1. The function buildargv implements various quoting conventions | |
1499 | which are undocumented and have little or nothing in common with | |
1500 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1501 | ||
1502 | 2. Options are used, which are not generally used in GDB (perhaps | |
1503 | "set mapped on", "set readnow on" would be better) | |
1504 | ||
1505 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1506 | conventions (because it is confusing and inconvenient). */ |
1507 | ||
1508 | void | |
fba45db2 | 1509 | symbol_file_command (char *args, int from_tty) |
c906108c | 1510 | { |
c906108c SS |
1511 | dont_repeat (); |
1512 | ||
1513 | if (args == NULL) | |
1514 | { | |
1adeb98a | 1515 | symbol_file_clear (from_tty); |
c906108c SS |
1516 | } |
1517 | else | |
1518 | { | |
d1a41061 | 1519 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1520 | int flags = OBJF_USERLOADED; |
1521 | struct cleanup *cleanups; | |
1522 | char *name = NULL; | |
1523 | ||
7a292a7a | 1524 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1525 | while (*argv != NULL) |
1526 | { | |
78a4a9b9 AC |
1527 | if (strcmp (*argv, "-readnow") == 0) |
1528 | flags |= OBJF_READNOW; | |
1529 | else if (**argv == '-') | |
8a3fe4f8 | 1530 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1531 | else |
1532 | { | |
cb2f3a29 | 1533 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1534 | name = *argv; |
78a4a9b9 | 1535 | } |
cb2f3a29 | 1536 | |
c906108c SS |
1537 | argv++; |
1538 | } | |
1539 | ||
1540 | if (name == NULL) | |
cb2f3a29 MK |
1541 | error (_("no symbol file name was specified")); |
1542 | ||
c906108c SS |
1543 | do_cleanups (cleanups); |
1544 | } | |
1545 | } | |
1546 | ||
1547 | /* Set the initial language. | |
1548 | ||
cb2f3a29 MK |
1549 | FIXME: A better solution would be to record the language in the |
1550 | psymtab when reading partial symbols, and then use it (if known) to | |
1551 | set the language. This would be a win for formats that encode the | |
1552 | language in an easily discoverable place, such as DWARF. For | |
1553 | stabs, we can jump through hoops looking for specially named | |
1554 | symbols or try to intuit the language from the specific type of | |
1555 | stabs we find, but we can't do that until later when we read in | |
1556 | full symbols. */ | |
c906108c | 1557 | |
8b60591b | 1558 | void |
fba45db2 | 1559 | set_initial_language (void) |
c906108c SS |
1560 | { |
1561 | struct partial_symtab *pst; | |
c5aa993b | 1562 | enum language lang = language_unknown; |
c906108c SS |
1563 | |
1564 | pst = find_main_psymtab (); | |
1565 | if (pst != NULL) | |
1566 | { | |
c5aa993b | 1567 | if (pst->filename != NULL) |
cb2f3a29 MK |
1568 | lang = deduce_language_from_filename (pst->filename); |
1569 | ||
c906108c SS |
1570 | if (lang == language_unknown) |
1571 | { | |
c5aa993b JM |
1572 | /* Make C the default language */ |
1573 | lang = language_c; | |
c906108c | 1574 | } |
cb2f3a29 | 1575 | |
c906108c | 1576 | set_language (lang); |
cb2f3a29 | 1577 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1578 | } |
1579 | } | |
1580 | ||
cb2f3a29 MK |
1581 | /* Open the file specified by NAME and hand it off to BFD for |
1582 | preliminary analysis. Return a newly initialized bfd *, which | |
1583 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1584 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1585 | |
1586 | bfd * | |
fba45db2 | 1587 | symfile_bfd_open (char *name) |
c906108c SS |
1588 | { |
1589 | bfd *sym_bfd; | |
1590 | int desc; | |
1591 | char *absolute_name; | |
1592 | ||
f1838a98 UW |
1593 | if (remote_filename_p (name)) |
1594 | { | |
1595 | name = xstrdup (name); | |
1596 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1597 | if (!sym_bfd) | |
1598 | { | |
1599 | make_cleanup (xfree, name); | |
1600 | error (_("`%s': can't open to read symbols: %s."), name, | |
1601 | bfd_errmsg (bfd_get_error ())); | |
1602 | } | |
1603 | ||
1604 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1605 | { | |
1606 | bfd_close (sym_bfd); | |
1607 | make_cleanup (xfree, name); | |
1608 | error (_("`%s': can't read symbols: %s."), name, | |
1609 | bfd_errmsg (bfd_get_error ())); | |
1610 | } | |
1611 | ||
1612 | return sym_bfd; | |
1613 | } | |
1614 | ||
cb2f3a29 | 1615 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1616 | |
1617 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1618 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1619 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1620 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1621 | if (desc < 0) |
1622 | { | |
1623 | char *exename = alloca (strlen (name) + 5); | |
1624 | strcat (strcpy (exename, name), ".exe"); | |
014d698b | 1625 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1626 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1627 | } |
1628 | #endif | |
1629 | if (desc < 0) | |
1630 | { | |
b8c9b27d | 1631 | make_cleanup (xfree, name); |
c906108c SS |
1632 | perror_with_name (name); |
1633 | } | |
cb2f3a29 MK |
1634 | |
1635 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1636 | bfd. It'll be freed in free_objfile(). */ | |
1637 | xfree (name); | |
1638 | name = absolute_name; | |
c906108c | 1639 | |
9f76c2cd | 1640 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1641 | if (!sym_bfd) |
1642 | { | |
1643 | close (desc); | |
b8c9b27d | 1644 | make_cleanup (xfree, name); |
f1838a98 | 1645 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1646 | bfd_errmsg (bfd_get_error ())); |
1647 | } | |
549c1eea | 1648 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1649 | |
1650 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1651 | { | |
cb2f3a29 MK |
1652 | /* FIXME: should be checking for errors from bfd_close (for one |
1653 | thing, on error it does not free all the storage associated | |
1654 | with the bfd). */ | |
1655 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1656 | make_cleanup (xfree, name); |
f1838a98 | 1657 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1658 | bfd_errmsg (bfd_get_error ())); |
1659 | } | |
cb2f3a29 | 1660 | |
4f6f9936 JK |
1661 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1662 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1663 | ||
cb2f3a29 | 1664 | return sym_bfd; |
c906108c SS |
1665 | } |
1666 | ||
cb2f3a29 MK |
1667 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1668 | the section was not found. */ | |
1669 | ||
0e931cf0 JB |
1670 | int |
1671 | get_section_index (struct objfile *objfile, char *section_name) | |
1672 | { | |
1673 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1674 | |
0e931cf0 JB |
1675 | if (sect) |
1676 | return sect->index; | |
1677 | else | |
1678 | return -1; | |
1679 | } | |
1680 | ||
cb2f3a29 MK |
1681 | /* Link SF into the global symtab_fns list. Called on startup by the |
1682 | _initialize routine in each object file format reader, to register | |
1683 | information about each format the the reader is prepared to | |
1684 | handle. */ | |
c906108c SS |
1685 | |
1686 | void | |
fba45db2 | 1687 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1688 | { |
1689 | sf->next = symtab_fns; | |
1690 | symtab_fns = sf; | |
1691 | } | |
1692 | ||
cb2f3a29 MK |
1693 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1694 | either returns or calls error(). The result is an initialized | |
1695 | struct sym_fns in the objfile structure, that contains cached | |
1696 | information about the symbol file. */ | |
c906108c | 1697 | |
31d99776 DJ |
1698 | static struct sym_fns * |
1699 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1700 | { |
1701 | struct sym_fns *sf; | |
31d99776 | 1702 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1703 | |
75245b24 MS |
1704 | if (our_flavour == bfd_target_srec_flavour |
1705 | || our_flavour == bfd_target_ihex_flavour | |
1706 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1707 | return NULL; /* No symbols. */ |
75245b24 | 1708 | |
c5aa993b | 1709 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1710 | if (our_flavour == sf->sym_flavour) |
1711 | return sf; | |
cb2f3a29 | 1712 | |
8a3fe4f8 | 1713 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1714 | bfd_get_target (abfd)); |
c906108c SS |
1715 | } |
1716 | \f | |
cb2f3a29 | 1717 | |
c906108c SS |
1718 | /* This function runs the load command of our current target. */ |
1719 | ||
1720 | static void | |
fba45db2 | 1721 | load_command (char *arg, int from_tty) |
c906108c | 1722 | { |
4487aabf PA |
1723 | /* The user might be reloading because the binary has changed. Take |
1724 | this opportunity to check. */ | |
1725 | reopen_exec_file (); | |
1726 | reread_symbols (); | |
1727 | ||
c906108c | 1728 | if (arg == NULL) |
1986bccd AS |
1729 | { |
1730 | char *parg; | |
1731 | int count = 0; | |
1732 | ||
1733 | parg = arg = get_exec_file (1); | |
1734 | ||
1735 | /* Count how many \ " ' tab space there are in the name. */ | |
1736 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1737 | { | |
1738 | parg++; | |
1739 | count++; | |
1740 | } | |
1741 | ||
1742 | if (count) | |
1743 | { | |
1744 | /* We need to quote this string so buildargv can pull it apart. */ | |
1745 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1746 | char *ptemp = temp; | |
1747 | char *prev; | |
1748 | ||
1749 | make_cleanup (xfree, temp); | |
1750 | ||
1751 | prev = parg = arg; | |
1752 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1753 | { | |
1754 | strncpy (ptemp, prev, parg - prev); | |
1755 | ptemp += parg - prev; | |
1756 | prev = parg++; | |
1757 | *ptemp++ = '\\'; | |
1758 | } | |
1759 | strcpy (ptemp, prev); | |
1760 | ||
1761 | arg = temp; | |
1762 | } | |
1763 | } | |
1764 | ||
c906108c | 1765 | target_load (arg, from_tty); |
2889e661 JB |
1766 | |
1767 | /* After re-loading the executable, we don't really know which | |
1768 | overlays are mapped any more. */ | |
1769 | overlay_cache_invalid = 1; | |
c906108c SS |
1770 | } |
1771 | ||
1772 | /* This version of "load" should be usable for any target. Currently | |
1773 | it is just used for remote targets, not inftarg.c or core files, | |
1774 | on the theory that only in that case is it useful. | |
1775 | ||
1776 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1777 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1778 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1779 | performance compares. */ | |
917317f4 | 1780 | |
917317f4 JM |
1781 | static int validate_download = 0; |
1782 | ||
e4f9b4d5 MS |
1783 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1784 | ||
1785 | static void | |
1786 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1787 | { | |
1788 | bfd_size_type *sum = data; | |
1789 | ||
2c500098 | 1790 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1791 | } |
1792 | ||
1793 | /* Opaque data for load_section_callback. */ | |
1794 | struct load_section_data { | |
1795 | unsigned long load_offset; | |
a76d924d DJ |
1796 | struct load_progress_data *progress_data; |
1797 | VEC(memory_write_request_s) *requests; | |
1798 | }; | |
1799 | ||
1800 | /* Opaque data for load_progress. */ | |
1801 | struct load_progress_data { | |
1802 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1803 | unsigned long write_count; |
1804 | unsigned long data_count; | |
1805 | bfd_size_type total_size; | |
a76d924d DJ |
1806 | }; |
1807 | ||
1808 | /* Opaque data for load_progress for a single section. */ | |
1809 | struct load_progress_section_data { | |
1810 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1811 | |
a76d924d | 1812 | /* Per-section data. */ |
cf7a04e8 DJ |
1813 | const char *section_name; |
1814 | ULONGEST section_sent; | |
1815 | ULONGEST section_size; | |
1816 | CORE_ADDR lma; | |
1817 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1818 | }; |
1819 | ||
a76d924d | 1820 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1821 | |
1822 | static void | |
1823 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1824 | { | |
a76d924d DJ |
1825 | struct load_progress_section_data *args = untyped_arg; |
1826 | struct load_progress_data *totals; | |
1827 | ||
1828 | if (args == NULL) | |
1829 | /* Writing padding data. No easy way to get at the cumulative | |
1830 | stats, so just ignore this. */ | |
1831 | return; | |
1832 | ||
1833 | totals = args->cumulative; | |
1834 | ||
1835 | if (bytes == 0 && args->section_sent == 0) | |
1836 | { | |
1837 | /* The write is just starting. Let the user know we've started | |
1838 | this section. */ | |
5af949e3 UW |
1839 | ui_out_message (uiout, 0, "Loading section %s, size %s lma %s\n", |
1840 | args->section_name, hex_string (args->section_size), | |
1841 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1842 | return; |
1843 | } | |
cf7a04e8 DJ |
1844 | |
1845 | if (validate_download) | |
1846 | { | |
1847 | /* Broken memories and broken monitors manifest themselves here | |
1848 | when bring new computers to life. This doubles already slow | |
1849 | downloads. */ | |
1850 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1851 | might add a verify_memory() method to the target vector and | |
1852 | then use that. remote.c could implement that method using | |
1853 | the ``qCRC'' packet. */ | |
1854 | gdb_byte *check = xmalloc (bytes); | |
1855 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1856 | ||
1857 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1858 | error (_("Download verify read failed at %s"), |
1859 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1860 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1861 | error (_("Download verify compare failed at %s"), |
1862 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1863 | do_cleanups (verify_cleanups); |
1864 | } | |
a76d924d | 1865 | totals->data_count += bytes; |
cf7a04e8 DJ |
1866 | args->lma += bytes; |
1867 | args->buffer += bytes; | |
a76d924d | 1868 | totals->write_count += 1; |
cf7a04e8 DJ |
1869 | args->section_sent += bytes; |
1870 | if (quit_flag | |
1871 | || (deprecated_ui_load_progress_hook != NULL | |
1872 | && deprecated_ui_load_progress_hook (args->section_name, | |
1873 | args->section_sent))) | |
1874 | error (_("Canceled the download")); | |
1875 | ||
1876 | if (deprecated_show_load_progress != NULL) | |
1877 | deprecated_show_load_progress (args->section_name, | |
1878 | args->section_sent, | |
1879 | args->section_size, | |
a76d924d DJ |
1880 | totals->data_count, |
1881 | totals->total_size); | |
cf7a04e8 DJ |
1882 | } |
1883 | ||
e4f9b4d5 MS |
1884 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1885 | ||
1886 | static void | |
1887 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1888 | { | |
a76d924d | 1889 | struct memory_write_request *new_request; |
e4f9b4d5 | 1890 | struct load_section_data *args = data; |
a76d924d | 1891 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1892 | bfd_size_type size = bfd_get_section_size (asec); |
1893 | gdb_byte *buffer; | |
cf7a04e8 | 1894 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1895 | |
cf7a04e8 DJ |
1896 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1897 | return; | |
e4f9b4d5 | 1898 | |
cf7a04e8 DJ |
1899 | if (size == 0) |
1900 | return; | |
e4f9b4d5 | 1901 | |
a76d924d DJ |
1902 | new_request = VEC_safe_push (memory_write_request_s, |
1903 | args->requests, NULL); | |
1904 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1905 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1906 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1907 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1908 | new_request->data = xmalloc (size); | |
1909 | new_request->baton = section_data; | |
cf7a04e8 | 1910 | |
a76d924d | 1911 | buffer = new_request->data; |
cf7a04e8 | 1912 | |
a76d924d DJ |
1913 | section_data->cumulative = args->progress_data; |
1914 | section_data->section_name = sect_name; | |
1915 | section_data->section_size = size; | |
1916 | section_data->lma = new_request->begin; | |
1917 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1918 | |
1919 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1920 | } |
1921 | ||
1922 | /* Clean up an entire memory request vector, including load | |
1923 | data and progress records. */ | |
cf7a04e8 | 1924 | |
a76d924d DJ |
1925 | static void |
1926 | clear_memory_write_data (void *arg) | |
1927 | { | |
1928 | VEC(memory_write_request_s) **vec_p = arg; | |
1929 | VEC(memory_write_request_s) *vec = *vec_p; | |
1930 | int i; | |
1931 | struct memory_write_request *mr; | |
cf7a04e8 | 1932 | |
a76d924d DJ |
1933 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1934 | { | |
1935 | xfree (mr->data); | |
1936 | xfree (mr->baton); | |
1937 | } | |
1938 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1939 | } |
1940 | ||
c906108c | 1941 | void |
917317f4 | 1942 | generic_load (char *args, int from_tty) |
c906108c | 1943 | { |
c906108c | 1944 | bfd *loadfile_bfd; |
2b71414d | 1945 | struct timeval start_time, end_time; |
917317f4 | 1946 | char *filename; |
1986bccd | 1947 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1948 | struct load_section_data cbdata; |
a76d924d DJ |
1949 | struct load_progress_data total_progress; |
1950 | ||
e4f9b4d5 | 1951 | CORE_ADDR entry; |
1986bccd | 1952 | char **argv; |
e4f9b4d5 | 1953 | |
a76d924d DJ |
1954 | memset (&cbdata, 0, sizeof (cbdata)); |
1955 | memset (&total_progress, 0, sizeof (total_progress)); | |
1956 | cbdata.progress_data = &total_progress; | |
1957 | ||
1958 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1959 | |
d1a41061 PP |
1960 | if (args == NULL) |
1961 | error_no_arg (_("file to load")); | |
1986bccd | 1962 | |
d1a41061 | 1963 | argv = gdb_buildargv (args); |
1986bccd AS |
1964 | make_cleanup_freeargv (argv); |
1965 | ||
1966 | filename = tilde_expand (argv[0]); | |
1967 | make_cleanup (xfree, filename); | |
1968 | ||
1969 | if (argv[1] != NULL) | |
917317f4 JM |
1970 | { |
1971 | char *endptr; | |
ba5f2f8a | 1972 | |
1986bccd AS |
1973 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1974 | ||
1975 | /* If the last word was not a valid number then | |
1976 | treat it as a file name with spaces in. */ | |
1977 | if (argv[1] == endptr) | |
1978 | error (_("Invalid download offset:%s."), argv[1]); | |
1979 | ||
1980 | if (argv[2] != NULL) | |
1981 | error (_("Too many parameters.")); | |
917317f4 | 1982 | } |
c906108c | 1983 | |
917317f4 | 1984 | /* Open the file for loading. */ |
c906108c SS |
1985 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1986 | if (loadfile_bfd == NULL) | |
1987 | { | |
1988 | perror_with_name (filename); | |
1989 | return; | |
1990 | } | |
917317f4 | 1991 | |
c906108c SS |
1992 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1993 | on error it does not free all the storage associated with the | |
1994 | bfd). */ | |
5c65bbb6 | 1995 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1996 | |
c5aa993b | 1997 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1998 | { |
8a3fe4f8 | 1999 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
2000 | bfd_errmsg (bfd_get_error ())); |
2001 | } | |
c5aa993b | 2002 | |
5417f6dc | 2003 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
2004 | (void *) &total_progress.total_size); |
2005 | ||
2006 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 2007 | |
2b71414d | 2008 | gettimeofday (&start_time, NULL); |
c906108c | 2009 | |
a76d924d DJ |
2010 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2011 | load_progress) != 0) | |
2012 | error (_("Load failed")); | |
c906108c | 2013 | |
2b71414d | 2014 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 2015 | |
e4f9b4d5 | 2016 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 2017 | ui_out_text (uiout, "Start address "); |
5af949e3 | 2018 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 2019 | ui_out_text (uiout, ", load size "); |
a76d924d | 2020 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2021 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2022 | /* We were doing this in remote-mips.c, I suspect it is right |
2023 | for other targets too. */ | |
fb14de7b | 2024 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2025 | |
7ca9f392 AC |
2026 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2027 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2028 | was commented out), making the call confuses GDB if more than one | |
2029 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2030 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2031 | |
a76d924d DJ |
2032 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2033 | total_progress.write_count, | |
2034 | &start_time, &end_time); | |
c906108c SS |
2035 | |
2036 | do_cleanups (old_cleanups); | |
2037 | } | |
2038 | ||
2039 | /* Report how fast the transfer went. */ | |
2040 | ||
917317f4 JM |
2041 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2042 | replaced by print_transfer_performance (with a very different | |
2043 | function signature). */ | |
2044 | ||
c906108c | 2045 | void |
fba45db2 KB |
2046 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2047 | time_t end_time) | |
c906108c | 2048 | { |
2b71414d DJ |
2049 | struct timeval start, end; |
2050 | ||
2051 | start.tv_sec = start_time; | |
2052 | start.tv_usec = 0; | |
2053 | end.tv_sec = end_time; | |
2054 | end.tv_usec = 0; | |
2055 | ||
2056 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2057 | } |
2058 | ||
2059 | void | |
d9fcf2fb | 2060 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2061 | unsigned long data_count, |
2062 | unsigned long write_count, | |
2b71414d DJ |
2063 | const struct timeval *start_time, |
2064 | const struct timeval *end_time) | |
917317f4 | 2065 | { |
9f43d28c | 2066 | ULONGEST time_count; |
2b71414d DJ |
2067 | |
2068 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2069 | accuracy and overflow. */ | |
2070 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2071 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2072 | ||
8b93c638 JM |
2073 | ui_out_text (uiout, "Transfer rate: "); |
2074 | if (time_count > 0) | |
2075 | { | |
9f43d28c DJ |
2076 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2077 | ||
2078 | if (ui_out_is_mi_like_p (uiout)) | |
2079 | { | |
2080 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2081 | ui_out_text (uiout, " bits/sec"); | |
2082 | } | |
2083 | else if (rate < 1024) | |
2084 | { | |
2085 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2086 | ui_out_text (uiout, " bytes/sec"); | |
2087 | } | |
2088 | else | |
2089 | { | |
2090 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2091 | ui_out_text (uiout, " KB/sec"); | |
2092 | } | |
8b93c638 JM |
2093 | } |
2094 | else | |
2095 | { | |
ba5f2f8a | 2096 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2097 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2098 | } |
2099 | if (write_count > 0) | |
2100 | { | |
2101 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2102 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2103 | ui_out_text (uiout, " bytes/write"); |
2104 | } | |
2105 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2106 | } |
2107 | ||
2108 | /* This function allows the addition of incrementally linked object files. | |
2109 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2110 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2111 | special case syntax for the rombug target (Rombug is the boot | |
2112 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2113 | rombug case, the user doesn't need to supply a text address, | |
2114 | instead a call to target_link() (in target.c) would supply the | |
2115 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 2116 | |
c906108c | 2117 | static void |
fba45db2 | 2118 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2119 | { |
5af949e3 | 2120 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2121 | char *filename = NULL; |
2df3850c | 2122 | int flags = OBJF_USERLOADED; |
c906108c | 2123 | char *arg; |
2acceee2 | 2124 | int expecting_option = 0; |
db162d44 | 2125 | int section_index = 0; |
2acceee2 JM |
2126 | int argcnt = 0; |
2127 | int sec_num = 0; | |
2128 | int i; | |
db162d44 EZ |
2129 | int expecting_sec_name = 0; |
2130 | int expecting_sec_addr = 0; | |
5b96932b | 2131 | char **argv; |
db162d44 | 2132 | |
a39a16c4 | 2133 | struct sect_opt |
2acceee2 | 2134 | { |
2acceee2 JM |
2135 | char *name; |
2136 | char *value; | |
a39a16c4 | 2137 | }; |
db162d44 | 2138 | |
a39a16c4 MM |
2139 | struct section_addr_info *section_addrs; |
2140 | struct sect_opt *sect_opts = NULL; | |
2141 | size_t num_sect_opts = 0; | |
3017564a | 2142 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2143 | |
a39a16c4 | 2144 | num_sect_opts = 16; |
5417f6dc | 2145 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2146 | * sizeof (struct sect_opt)); |
2147 | ||
c906108c SS |
2148 | dont_repeat (); |
2149 | ||
2150 | if (args == NULL) | |
8a3fe4f8 | 2151 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2152 | |
d1a41061 | 2153 | argv = gdb_buildargv (args); |
5b96932b | 2154 | make_cleanup_freeargv (argv); |
db162d44 | 2155 | |
5b96932b AS |
2156 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2157 | { | |
2158 | /* Process the argument. */ | |
db162d44 | 2159 | if (argcnt == 0) |
c906108c | 2160 | { |
db162d44 EZ |
2161 | /* The first argument is the file name. */ |
2162 | filename = tilde_expand (arg); | |
3017564a | 2163 | make_cleanup (xfree, filename); |
c906108c | 2164 | } |
db162d44 | 2165 | else |
7a78ae4e ND |
2166 | if (argcnt == 1) |
2167 | { | |
2168 | /* The second argument is always the text address at which | |
2169 | to load the program. */ | |
2170 | sect_opts[section_index].name = ".text"; | |
2171 | sect_opts[section_index].value = arg; | |
f414f22f | 2172 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2173 | { |
2174 | num_sect_opts *= 2; | |
5417f6dc | 2175 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2176 | xrealloc (sect_opts, |
5417f6dc | 2177 | num_sect_opts |
a39a16c4 MM |
2178 | * sizeof (struct sect_opt))); |
2179 | } | |
7a78ae4e ND |
2180 | } |
2181 | else | |
2182 | { | |
2183 | /* It's an option (starting with '-') or it's an argument | |
2184 | to an option */ | |
2185 | ||
2186 | if (*arg == '-') | |
2187 | { | |
78a4a9b9 AC |
2188 | if (strcmp (arg, "-readnow") == 0) |
2189 | flags |= OBJF_READNOW; | |
2190 | else if (strcmp (arg, "-s") == 0) | |
2191 | { | |
2192 | expecting_sec_name = 1; | |
2193 | expecting_sec_addr = 1; | |
2194 | } | |
7a78ae4e ND |
2195 | } |
2196 | else | |
2197 | { | |
2198 | if (expecting_sec_name) | |
db162d44 | 2199 | { |
7a78ae4e ND |
2200 | sect_opts[section_index].name = arg; |
2201 | expecting_sec_name = 0; | |
db162d44 EZ |
2202 | } |
2203 | else | |
7a78ae4e ND |
2204 | if (expecting_sec_addr) |
2205 | { | |
2206 | sect_opts[section_index].value = arg; | |
2207 | expecting_sec_addr = 0; | |
f414f22f | 2208 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2209 | { |
2210 | num_sect_opts *= 2; | |
5417f6dc | 2211 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2212 | xrealloc (sect_opts, |
5417f6dc | 2213 | num_sect_opts |
a39a16c4 MM |
2214 | * sizeof (struct sect_opt))); |
2215 | } | |
7a78ae4e ND |
2216 | } |
2217 | else | |
8a3fe4f8 | 2218 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2219 | } |
2220 | } | |
c906108c | 2221 | } |
c906108c | 2222 | |
927890d0 JB |
2223 | /* This command takes at least two arguments. The first one is a |
2224 | filename, and the second is the address where this file has been | |
2225 | loaded. Abort now if this address hasn't been provided by the | |
2226 | user. */ | |
2227 | if (section_index < 1) | |
2228 | error (_("The address where %s has been loaded is missing"), filename); | |
2229 | ||
db162d44 EZ |
2230 | /* Print the prompt for the query below. And save the arguments into |
2231 | a sect_addr_info structure to be passed around to other | |
2232 | functions. We have to split this up into separate print | |
bb599908 | 2233 | statements because hex_string returns a local static |
db162d44 | 2234 | string. */ |
5417f6dc | 2235 | |
a3f17187 | 2236 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2237 | section_addrs = alloc_section_addr_info (section_index); |
2238 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2239 | for (i = 0; i < section_index; i++) |
c906108c | 2240 | { |
db162d44 EZ |
2241 | CORE_ADDR addr; |
2242 | char *val = sect_opts[i].value; | |
2243 | char *sec = sect_opts[i].name; | |
5417f6dc | 2244 | |
ae822768 | 2245 | addr = parse_and_eval_address (val); |
db162d44 | 2246 | |
db162d44 EZ |
2247 | /* Here we store the section offsets in the order they were |
2248 | entered on the command line. */ | |
a39a16c4 MM |
2249 | section_addrs->other[sec_num].name = sec; |
2250 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2251 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2252 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2253 | sec_num++; |
2254 | ||
5417f6dc | 2255 | /* The object's sections are initialized when a |
db162d44 | 2256 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2257 | This happens in reread_symbols. |
db162d44 EZ |
2258 | At this point, we don't know what file type this is, |
2259 | so we can't determine what section names are valid. */ | |
2acceee2 | 2260 | } |
db162d44 | 2261 | |
2acceee2 | 2262 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2263 | error (_("Not confirmed.")); |
c906108c | 2264 | |
7eedccfa PP |
2265 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2266 | section_addrs, flags); | |
c906108c SS |
2267 | |
2268 | /* Getting new symbols may change our opinion about what is | |
2269 | frameless. */ | |
2270 | reinit_frame_cache (); | |
db162d44 | 2271 | do_cleanups (my_cleanups); |
c906108c SS |
2272 | } |
2273 | \f | |
70992597 | 2274 | |
c906108c SS |
2275 | /* Re-read symbols if a symbol-file has changed. */ |
2276 | void | |
fba45db2 | 2277 | reread_symbols (void) |
c906108c SS |
2278 | { |
2279 | struct objfile *objfile; | |
2280 | long new_modtime; | |
2281 | int reread_one = 0; | |
2282 | struct stat new_statbuf; | |
2283 | int res; | |
2284 | ||
2285 | /* With the addition of shared libraries, this should be modified, | |
2286 | the load time should be saved in the partial symbol tables, since | |
2287 | different tables may come from different source files. FIXME. | |
2288 | This routine should then walk down each partial symbol table | |
2289 | and see if the symbol table that it originates from has been changed */ | |
2290 | ||
c5aa993b JM |
2291 | for (objfile = object_files; objfile; objfile = objfile->next) |
2292 | { | |
2293 | if (objfile->obfd) | |
2294 | { | |
52d16ba8 | 2295 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
2296 | /* If this object is from a shared library, then you should |
2297 | stat on the library name, not member name. */ | |
c906108c | 2298 | |
c5aa993b JM |
2299 | if (objfile->obfd->my_archive) |
2300 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2301 | else | |
c906108c | 2302 | #endif |
c5aa993b JM |
2303 | res = stat (objfile->name, &new_statbuf); |
2304 | if (res != 0) | |
c906108c | 2305 | { |
c5aa993b | 2306 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
a3f17187 | 2307 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
c5aa993b JM |
2308 | objfile->name); |
2309 | continue; | |
c906108c | 2310 | } |
c5aa993b JM |
2311 | new_modtime = new_statbuf.st_mtime; |
2312 | if (new_modtime != objfile->mtime) | |
c906108c | 2313 | { |
c5aa993b JM |
2314 | struct cleanup *old_cleanups; |
2315 | struct section_offsets *offsets; | |
2316 | int num_offsets; | |
c5aa993b JM |
2317 | char *obfd_filename; |
2318 | ||
a3f17187 | 2319 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), |
c5aa993b JM |
2320 | objfile->name); |
2321 | ||
2322 | /* There are various functions like symbol_file_add, | |
2323 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2324 | appear to do what we want. But they have various other | |
2325 | effects which we *don't* want. So we just do stuff | |
2326 | ourselves. We don't worry about mapped files (for one thing, | |
2327 | any mapped file will be out of date). */ | |
2328 | ||
2329 | /* If we get an error, blow away this objfile (not sure if | |
2330 | that is the correct response for things like shared | |
2331 | libraries). */ | |
74b7792f | 2332 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 2333 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 2334 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b | 2335 | |
b2de52bb JK |
2336 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), |
2337 | bfd_get_filename (exec_bfd)) == 0) | |
2338 | { | |
2339 | /* Reload EXEC_BFD without asking anything. */ | |
2340 | ||
2341 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2342 | } | |
2343 | ||
c5aa993b JM |
2344 | /* Clean up any state BFD has sitting around. We don't need |
2345 | to close the descriptor but BFD lacks a way of closing the | |
2346 | BFD without closing the descriptor. */ | |
2347 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2348 | if (!bfd_close (objfile->obfd)) | |
8a3fe4f8 | 2349 | error (_("Can't close BFD for %s: %s"), objfile->name, |
c5aa993b | 2350 | bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
2351 | if (remote_filename_p (obfd_filename)) |
2352 | objfile->obfd = remote_bfd_open (obfd_filename, gnutarget); | |
2353 | else | |
2354 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
c5aa993b | 2355 | if (objfile->obfd == NULL) |
8a3fe4f8 | 2356 | error (_("Can't open %s to read symbols."), objfile->name); |
3db741ef PP |
2357 | else |
2358 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
c5aa993b JM |
2359 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2360 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
8a3fe4f8 | 2361 | error (_("Can't read symbols from %s: %s."), objfile->name, |
c5aa993b JM |
2362 | bfd_errmsg (bfd_get_error ())); |
2363 | ||
2364 | /* Save the offsets, we will nuke them with the rest of the | |
8b92e4d5 | 2365 | objfile_obstack. */ |
c5aa993b | 2366 | num_offsets = objfile->num_sections; |
5417f6dc | 2367 | offsets = ((struct section_offsets *) |
a39a16c4 | 2368 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); |
5417f6dc | 2369 | memcpy (offsets, objfile->section_offsets, |
a39a16c4 | 2370 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b | 2371 | |
ae5a43e0 DJ |
2372 | /* Remove any references to this objfile in the global |
2373 | value lists. */ | |
2374 | preserve_values (objfile); | |
2375 | ||
c5aa993b JM |
2376 | /* Nuke all the state that we will re-read. Much of the following |
2377 | code which sets things to NULL really is necessary to tell | |
5b2ab461 JK |
2378 | other parts of GDB that there is nothing currently there. |
2379 | ||
2380 | Try to keep the freeing order compatible with free_objfile. */ | |
2381 | ||
2382 | if (objfile->sf != NULL) | |
2383 | { | |
2384 | (*objfile->sf->sym_finish) (objfile); | |
2385 | } | |
2386 | ||
2387 | clear_objfile_data (objfile); | |
c5aa993b JM |
2388 | |
2389 | /* FIXME: Do we have to free a whole linked list, or is this | |
2390 | enough? */ | |
2391 | if (objfile->global_psymbols.list) | |
2dc74dc1 | 2392 | xfree (objfile->global_psymbols.list); |
c5aa993b JM |
2393 | memset (&objfile->global_psymbols, 0, |
2394 | sizeof (objfile->global_psymbols)); | |
2395 | if (objfile->static_psymbols.list) | |
2dc74dc1 | 2396 | xfree (objfile->static_psymbols.list); |
c5aa993b JM |
2397 | memset (&objfile->static_psymbols, 0, |
2398 | sizeof (objfile->static_psymbols)); | |
2399 | ||
2400 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
2401 | bcache_xfree (objfile->psymbol_cache); |
2402 | objfile->psymbol_cache = bcache_xmalloc (); | |
2403 | bcache_xfree (objfile->macro_cache); | |
2404 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
2405 | if (objfile->demangled_names_hash != NULL) |
2406 | { | |
2407 | htab_delete (objfile->demangled_names_hash); | |
2408 | objfile->demangled_names_hash = NULL; | |
2409 | } | |
b99607ea | 2410 | obstack_free (&objfile->objfile_obstack, 0); |
c5aa993b JM |
2411 | objfile->sections = NULL; |
2412 | objfile->symtabs = NULL; | |
2413 | objfile->psymtabs = NULL; | |
930123b7 | 2414 | objfile->psymtabs_addrmap = NULL; |
c5aa993b | 2415 | objfile->free_psymtabs = NULL; |
a1b8c067 | 2416 | objfile->cp_namespace_symtab = NULL; |
c5aa993b | 2417 | objfile->msymbols = NULL; |
0a6ddd08 | 2418 | objfile->deprecated_sym_private = NULL; |
c5aa993b | 2419 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
2420 | memset (&objfile->msymbol_hash, 0, |
2421 | sizeof (objfile->msymbol_hash)); | |
2422 | memset (&objfile->msymbol_demangled_hash, 0, | |
2423 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b | 2424 | |
af5f3db6 AC |
2425 | objfile->psymbol_cache = bcache_xmalloc (); |
2426 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
2427 | /* obstack_init also initializes the obstack so it is |
2428 | empty. We could use obstack_specify_allocation but | |
2429 | gdb_obstack.h specifies the alloc/dealloc | |
2430 | functions. */ | |
2431 | obstack_init (&objfile->objfile_obstack); | |
c5aa993b JM |
2432 | if (build_objfile_section_table (objfile)) |
2433 | { | |
8a3fe4f8 | 2434 | error (_("Can't find the file sections in `%s': %s"), |
c5aa993b JM |
2435 | objfile->name, bfd_errmsg (bfd_get_error ())); |
2436 | } | |
15831452 | 2437 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2438 | |
2439 | /* We use the same section offsets as from last time. I'm not | |
2440 | sure whether that is always correct for shared libraries. */ | |
2441 | objfile->section_offsets = (struct section_offsets *) | |
5417f6dc | 2442 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 2443 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
5417f6dc | 2444 | memcpy (objfile->section_offsets, offsets, |
a39a16c4 | 2445 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
2446 | objfile->num_sections = num_offsets; |
2447 | ||
2448 | /* What the hell is sym_new_init for, anyway? The concept of | |
2449 | distinguishing between the main file and additional files | |
2450 | in this way seems rather dubious. */ | |
2451 | if (objfile == symfile_objfile) | |
2452 | { | |
2453 | (*objfile->sf->sym_new_init) (objfile); | |
c5aa993b JM |
2454 | } |
2455 | ||
2456 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2457 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2458 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2459 | zero is OK since dbxread.c also does what it needs to do if | |
2460 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2461 | (*objfile->sf->sym_read) (objfile, 0); |
e361b228 | 2462 | if (!objfile_has_symbols (objfile)) |
c5aa993b JM |
2463 | { |
2464 | wrap_here (""); | |
a3f17187 | 2465 | printf_unfiltered (_("(no debugging symbols found)\n")); |
c5aa993b JM |
2466 | wrap_here (""); |
2467 | } | |
c5aa993b JM |
2468 | |
2469 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2470 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2471 | |
c5aa993b JM |
2472 | /* Getting new symbols may change our opinion about what is |
2473 | frameless. */ | |
c906108c | 2474 | |
c5aa993b | 2475 | reinit_frame_cache (); |
c906108c | 2476 | |
c5aa993b JM |
2477 | /* Discard cleanups as symbol reading was successful. */ |
2478 | discard_cleanups (old_cleanups); | |
c906108c | 2479 | |
c5aa993b JM |
2480 | /* If the mtime has changed between the time we set new_modtime |
2481 | and now, we *want* this to be out of date, so don't call stat | |
2482 | again now. */ | |
2483 | objfile->mtime = new_modtime; | |
2484 | reread_one = 1; | |
5b5d99cf | 2485 | reread_separate_symbols (objfile); |
6528a9ea | 2486 | init_entry_point_info (objfile); |
c5aa993b | 2487 | } |
c906108c SS |
2488 | } |
2489 | } | |
c906108c SS |
2490 | |
2491 | if (reread_one) | |
ea53e89f | 2492 | { |
ff3536bc UW |
2493 | /* Notify objfiles that we've modified objfile sections. */ |
2494 | objfiles_changed (); | |
2495 | ||
ea53e89f JB |
2496 | clear_symtab_users (); |
2497 | /* At least one objfile has changed, so we can consider that | |
2498 | the executable we're debugging has changed too. */ | |
781b42b0 | 2499 | observer_notify_executable_changed (); |
ea53e89f | 2500 | } |
c906108c | 2501 | } |
5b5d99cf JB |
2502 | |
2503 | ||
2504 | /* Handle separate debug info for OBJFILE, which has just been | |
2505 | re-read: | |
2506 | - If we had separate debug info before, but now we don't, get rid | |
2507 | of the separated objfile. | |
2508 | - If we didn't have separated debug info before, but now we do, | |
2509 | read in the new separated debug info file. | |
2510 | - If the debug link points to a different file, toss the old one | |
2511 | and read the new one. | |
2512 | This function does *not* handle the case where objfile is still | |
2513 | using the same separate debug info file, but that file's timestamp | |
2514 | has changed. That case should be handled by the loop in | |
2515 | reread_symbols already. */ | |
2516 | static void | |
2517 | reread_separate_symbols (struct objfile *objfile) | |
2518 | { | |
2519 | char *debug_file; | |
2520 | unsigned long crc32; | |
2521 | ||
2522 | /* Does the updated objfile's debug info live in a | |
2523 | separate file? */ | |
2524 | debug_file = find_separate_debug_file (objfile); | |
2525 | ||
2526 | if (objfile->separate_debug_objfile) | |
2527 | { | |
2528 | /* There are two cases where we need to get rid of | |
2529 | the old separated debug info objfile: | |
2530 | - if the new primary objfile doesn't have | |
2531 | separated debug info, or | |
2532 | - if the new primary objfile has separate debug | |
2533 | info, but it's under a different filename. | |
5417f6dc | 2534 | |
5b5d99cf JB |
2535 | If the old and new objfiles both have separate |
2536 | debug info, under the same filename, then we're | |
2537 | okay --- if the separated file's contents have | |
2538 | changed, we will have caught that when we | |
2539 | visited it in this function's outermost | |
2540 | loop. */ | |
2541 | if (! debug_file | |
2542 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2543 | free_objfile (objfile->separate_debug_objfile); | |
2544 | } | |
2545 | ||
2546 | /* If the new objfile has separate debug info, and we | |
2547 | haven't loaded it already, do so now. */ | |
2548 | if (debug_file | |
2549 | && ! objfile->separate_debug_objfile) | |
2550 | { | |
2551 | /* Use the same section offset table as objfile itself. | |
2552 | Preserve the flags from objfile that make sense. */ | |
2553 | objfile->separate_debug_objfile | |
2554 | = (symbol_file_add_with_addrs_or_offsets | |
5417f6dc | 2555 | (symfile_bfd_open (debug_file), |
7eedccfa | 2556 | info_verbose ? SYMFILE_VERBOSE : 0, |
5b5d99cf JB |
2557 | 0, /* No addr table. */ |
2558 | objfile->section_offsets, objfile->num_sections, | |
78a4a9b9 | 2559 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
5b5d99cf JB |
2560 | | OBJF_USERLOADED))); |
2561 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2562 | = objfile; | |
2563 | } | |
73780b3c MS |
2564 | if (debug_file) |
2565 | xfree (debug_file); | |
5b5d99cf JB |
2566 | } |
2567 | ||
2568 | ||
c906108c SS |
2569 | \f |
2570 | ||
c5aa993b JM |
2571 | |
2572 | typedef struct | |
2573 | { | |
2574 | char *ext; | |
c906108c | 2575 | enum language lang; |
c5aa993b JM |
2576 | } |
2577 | filename_language; | |
c906108c | 2578 | |
c5aa993b | 2579 | static filename_language *filename_language_table; |
c906108c SS |
2580 | static int fl_table_size, fl_table_next; |
2581 | ||
2582 | static void | |
fba45db2 | 2583 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2584 | { |
2585 | if (fl_table_next >= fl_table_size) | |
2586 | { | |
2587 | fl_table_size += 10; | |
5417f6dc | 2588 | filename_language_table = |
25bf3106 PM |
2589 | xrealloc (filename_language_table, |
2590 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2591 | } |
2592 | ||
4fcf66da | 2593 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2594 | filename_language_table[fl_table_next].lang = lang; |
2595 | fl_table_next++; | |
2596 | } | |
2597 | ||
2598 | static char *ext_args; | |
920d2a44 AC |
2599 | static void |
2600 | show_ext_args (struct ui_file *file, int from_tty, | |
2601 | struct cmd_list_element *c, const char *value) | |
2602 | { | |
2603 | fprintf_filtered (file, _("\ | |
2604 | Mapping between filename extension and source language is \"%s\".\n"), | |
2605 | value); | |
2606 | } | |
c906108c SS |
2607 | |
2608 | static void | |
26c41df3 | 2609 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2610 | { |
2611 | int i; | |
2612 | char *cp = ext_args; | |
2613 | enum language lang; | |
2614 | ||
2615 | /* First arg is filename extension, starting with '.' */ | |
2616 | if (*cp != '.') | |
8a3fe4f8 | 2617 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2618 | |
2619 | /* Find end of first arg. */ | |
c5aa993b | 2620 | while (*cp && !isspace (*cp)) |
c906108c SS |
2621 | cp++; |
2622 | ||
2623 | if (*cp == '\0') | |
8a3fe4f8 | 2624 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2625 | ext_args); |
2626 | ||
2627 | /* Null-terminate first arg */ | |
c5aa993b | 2628 | *cp++ = '\0'; |
c906108c SS |
2629 | |
2630 | /* Find beginning of second arg, which should be a source language. */ | |
2631 | while (*cp && isspace (*cp)) | |
2632 | cp++; | |
2633 | ||
2634 | if (*cp == '\0') | |
8a3fe4f8 | 2635 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2636 | ext_args); |
2637 | ||
2638 | /* Lookup the language from among those we know. */ | |
2639 | lang = language_enum (cp); | |
2640 | ||
2641 | /* Now lookup the filename extension: do we already know it? */ | |
2642 | for (i = 0; i < fl_table_next; i++) | |
2643 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2644 | break; | |
2645 | ||
2646 | if (i >= fl_table_next) | |
2647 | { | |
2648 | /* new file extension */ | |
2649 | add_filename_language (ext_args, lang); | |
2650 | } | |
2651 | else | |
2652 | { | |
2653 | /* redefining a previously known filename extension */ | |
2654 | ||
2655 | /* if (from_tty) */ | |
2656 | /* query ("Really make files of type %s '%s'?", */ | |
2657 | /* ext_args, language_str (lang)); */ | |
2658 | ||
b8c9b27d | 2659 | xfree (filename_language_table[i].ext); |
4fcf66da | 2660 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2661 | filename_language_table[i].lang = lang; |
2662 | } | |
2663 | } | |
2664 | ||
2665 | static void | |
fba45db2 | 2666 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2667 | { |
2668 | int i; | |
2669 | ||
a3f17187 | 2670 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2671 | printf_filtered ("\n\n"); |
2672 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2673 | printf_filtered ("\t%s\t- %s\n", |
2674 | filename_language_table[i].ext, | |
c906108c SS |
2675 | language_str (filename_language_table[i].lang)); |
2676 | } | |
2677 | ||
2678 | static void | |
fba45db2 | 2679 | init_filename_language_table (void) |
c906108c SS |
2680 | { |
2681 | if (fl_table_size == 0) /* protect against repetition */ | |
2682 | { | |
2683 | fl_table_size = 20; | |
2684 | fl_table_next = 0; | |
c5aa993b | 2685 | filename_language_table = |
c906108c | 2686 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2687 | add_filename_language (".c", language_c); |
2688 | add_filename_language (".C", language_cplus); | |
2689 | add_filename_language (".cc", language_cplus); | |
2690 | add_filename_language (".cp", language_cplus); | |
2691 | add_filename_language (".cpp", language_cplus); | |
2692 | add_filename_language (".cxx", language_cplus); | |
2693 | add_filename_language (".c++", language_cplus); | |
2694 | add_filename_language (".java", language_java); | |
c906108c | 2695 | add_filename_language (".class", language_java); |
da2cf7e0 | 2696 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2697 | add_filename_language (".f", language_fortran); |
2698 | add_filename_language (".F", language_fortran); | |
2699 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2700 | add_filename_language (".sx", language_asm); |
c5aa993b | 2701 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2702 | add_filename_language (".pas", language_pascal); |
2703 | add_filename_language (".p", language_pascal); | |
2704 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2705 | add_filename_language (".adb", language_ada); |
2706 | add_filename_language (".ads", language_ada); | |
2707 | add_filename_language (".a", language_ada); | |
2708 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2709 | } |
2710 | } | |
2711 | ||
2712 | enum language | |
fba45db2 | 2713 | deduce_language_from_filename (char *filename) |
c906108c SS |
2714 | { |
2715 | int i; | |
2716 | char *cp; | |
2717 | ||
2718 | if (filename != NULL) | |
2719 | if ((cp = strrchr (filename, '.')) != NULL) | |
2720 | for (i = 0; i < fl_table_next; i++) | |
2721 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2722 | return filename_language_table[i].lang; | |
2723 | ||
2724 | return language_unknown; | |
2725 | } | |
2726 | \f | |
2727 | /* allocate_symtab: | |
2728 | ||
2729 | Allocate and partly initialize a new symbol table. Return a pointer | |
2730 | to it. error() if no space. | |
2731 | ||
2732 | Caller must set these fields: | |
c5aa993b JM |
2733 | LINETABLE(symtab) |
2734 | symtab->blockvector | |
2735 | symtab->dirname | |
2736 | symtab->free_code | |
2737 | symtab->free_ptr | |
2738 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2739 | */ |
2740 | ||
2741 | struct symtab * | |
fba45db2 | 2742 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2743 | { |
52f0bd74 | 2744 | struct symtab *symtab; |
c906108c SS |
2745 | |
2746 | symtab = (struct symtab *) | |
4a146b47 | 2747 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2748 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b | 2749 | symtab->filename = obsavestring (filename, strlen (filename), |
4a146b47 | 2750 | &objfile->objfile_obstack); |
c5aa993b JM |
2751 | symtab->fullname = NULL; |
2752 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2753 | symtab->debugformat = "unknown"; |
c906108c SS |
2754 | |
2755 | /* Hook it to the objfile it comes from */ | |
2756 | ||
c5aa993b JM |
2757 | symtab->objfile = objfile; |
2758 | symtab->next = objfile->symtabs; | |
2759 | objfile->symtabs = symtab; | |
c906108c | 2760 | |
c906108c SS |
2761 | return (symtab); |
2762 | } | |
2763 | ||
2764 | struct partial_symtab * | |
fba45db2 | 2765 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2766 | { |
2767 | struct partial_symtab *psymtab; | |
2768 | ||
c5aa993b | 2769 | if (objfile->free_psymtabs) |
c906108c | 2770 | { |
c5aa993b JM |
2771 | psymtab = objfile->free_psymtabs; |
2772 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2773 | } |
2774 | else | |
2775 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2776 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2777 | sizeof (struct partial_symtab)); |
2778 | ||
2779 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b | 2780 | psymtab->filename = obsavestring (filename, strlen (filename), |
8b92e4d5 | 2781 | &objfile->objfile_obstack); |
c5aa993b | 2782 | psymtab->symtab = NULL; |
c906108c SS |
2783 | |
2784 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2785 | Psymtabs are searched in most recent inserted -> least recent | |
2786 | inserted order. */ | |
2787 | ||
c5aa993b JM |
2788 | psymtab->objfile = objfile; |
2789 | psymtab->next = objfile->psymtabs; | |
2790 | objfile->psymtabs = psymtab; | |
c906108c SS |
2791 | #if 0 |
2792 | { | |
2793 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2794 | psymtab->objfile = objfile; |
2795 | psymtab->next = NULL; | |
2796 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2797 | while ((*prev_pst) != NULL) |
c5aa993b | 2798 | prev_pst = &((*prev_pst)->next); |
c906108c | 2799 | (*prev_pst) = psymtab; |
c5aa993b | 2800 | } |
c906108c | 2801 | #endif |
c5aa993b | 2802 | |
c906108c SS |
2803 | return (psymtab); |
2804 | } | |
2805 | ||
2806 | void | |
fba45db2 | 2807 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2808 | { |
2809 | struct partial_symtab **prev_pst; | |
2810 | ||
2811 | /* From dbxread.c: | |
2812 | Empty psymtabs happen as a result of header files which don't | |
2813 | have any symbols in them. There can be a lot of them. But this | |
2814 | check is wrong, in that a psymtab with N_SLINE entries but | |
2815 | nothing else is not empty, but we don't realize that. Fixing | |
2816 | that without slowing things down might be tricky. */ | |
2817 | ||
2818 | /* First, snip it out of the psymtab chain */ | |
2819 | ||
2820 | prev_pst = &(pst->objfile->psymtabs); | |
2821 | while ((*prev_pst) != pst) | |
2822 | prev_pst = &((*prev_pst)->next); | |
2823 | (*prev_pst) = pst->next; | |
2824 | ||
2825 | /* Next, put it on a free list for recycling */ | |
2826 | ||
2827 | pst->next = pst->objfile->free_psymtabs; | |
2828 | pst->objfile->free_psymtabs = pst; | |
2829 | } | |
c906108c | 2830 | \f |
c5aa993b | 2831 | |
c906108c SS |
2832 | /* Reset all data structures in gdb which may contain references to symbol |
2833 | table data. */ | |
2834 | ||
2835 | void | |
fba45db2 | 2836 | clear_symtab_users (void) |
c906108c SS |
2837 | { |
2838 | /* Someday, we should do better than this, by only blowing away | |
2839 | the things that really need to be blown. */ | |
c0501be5 DJ |
2840 | |
2841 | /* Clear the "current" symtab first, because it is no longer valid. | |
2842 | breakpoint_re_set may try to access the current symtab. */ | |
2843 | clear_current_source_symtab_and_line (); | |
2844 | ||
c906108c | 2845 | clear_displays (); |
c906108c | 2846 | breakpoint_re_set (); |
6c95b8df | 2847 | set_default_breakpoint (0, NULL, 0, 0, 0); |
c906108c | 2848 | clear_pc_function_cache (); |
06d3b283 | 2849 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2850 | |
2851 | /* Clear globals which might have pointed into a removed objfile. | |
2852 | FIXME: It's not clear which of these are supposed to persist | |
2853 | between expressions and which ought to be reset each time. */ | |
2854 | expression_context_block = NULL; | |
2855 | innermost_block = NULL; | |
8756216b DP |
2856 | |
2857 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2858 | varobj_invalidate (); | |
2859 | ||
c906108c SS |
2860 | } |
2861 | ||
74b7792f AC |
2862 | static void |
2863 | clear_symtab_users_cleanup (void *ignore) | |
2864 | { | |
2865 | clear_symtab_users (); | |
2866 | } | |
2867 | ||
c906108c SS |
2868 | /* clear_symtab_users_once: |
2869 | ||
2870 | This function is run after symbol reading, or from a cleanup. | |
2871 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2872 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2873 | reference it have not yet been cleared or re-directed. (The old |
2874 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2875 | below.) | |
2876 | ||
2877 | This function can be queued N times as a cleanup, or called | |
2878 | directly; it will do all the work the first time, and then will be a | |
2879 | no-op until the next time it is queued. This works by bumping a | |
2880 | counter at queueing time. Much later when the cleanup is run, or at | |
2881 | the end of symbol processing (in case the cleanup is discarded), if | |
2882 | the queued count is greater than the "done-count", we do the work | |
2883 | and set the done-count to the queued count. If the queued count is | |
2884 | less than or equal to the done-count, we just ignore the call. This | |
2885 | is needed because reading a single .o file will often replace many | |
2886 | symtabs (one per .h file, for example), and we don't want to reset | |
2887 | the breakpoints N times in the user's face. | |
2888 | ||
2889 | The reason we both queue a cleanup, and call it directly after symbol | |
2890 | reading, is because the cleanup protects us in case of errors, but is | |
2891 | discarded if symbol reading is successful. */ | |
2892 | ||
2893 | #if 0 | |
2894 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2895 | is no longer needed. */ | |
a14ed312 | 2896 | static void clear_symtab_users_once (void); |
c906108c SS |
2897 | |
2898 | static int clear_symtab_users_queued; | |
2899 | static int clear_symtab_users_done; | |
2900 | ||
2901 | static void | |
fba45db2 | 2902 | clear_symtab_users_once (void) |
c906108c SS |
2903 | { |
2904 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2905 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2906 | return; | |
2907 | clear_symtab_users_done = clear_symtab_users_queued; | |
2908 | ||
2909 | clear_symtab_users (); | |
2910 | } | |
2911 | #endif | |
2912 | ||
2913 | /* Delete the specified psymtab, and any others that reference it. */ | |
2914 | ||
2915 | static void | |
fba45db2 | 2916 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2917 | { |
2918 | struct partial_symtab *ps, *pprev = NULL; | |
2919 | int i; | |
2920 | ||
2921 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2922 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2923 | { | |
2924 | if (ps == pst) | |
2925 | break; | |
2926 | pprev = ps; | |
2927 | } | |
c906108c | 2928 | |
c5aa993b JM |
2929 | if (ps) |
2930 | { | |
2931 | /* Unhook it from the chain. */ | |
2932 | if (ps == pst->objfile->psymtabs) | |
2933 | pst->objfile->psymtabs = ps->next; | |
2934 | else | |
2935 | pprev->next = ps->next; | |
2936 | ||
2937 | /* FIXME, we can't conveniently deallocate the entries in the | |
2938 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2939 | this psymtab points to. These just take up space until all | |
2940 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2941 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2942 | |
2943 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2944 | again: | |
2945 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2946 | { | |
2947 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2948 | { | |
2949 | if (ps->dependencies[i] == pst) | |
2950 | { | |
2951 | cashier_psymtab (ps); | |
2952 | goto again; /* Must restart, chain has been munged. */ | |
2953 | } | |
2954 | } | |
c906108c | 2955 | } |
c906108c | 2956 | } |
c906108c SS |
2957 | } |
2958 | ||
2959 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2960 | with any dependent breakpoints, displays, etc. | |
2961 | Used when loading new versions of object modules with the "add-file" | |
2962 | command. This is only called on the top-level symtab or psymtab's name; | |
2963 | it is not called for subsidiary files such as .h files. | |
2964 | ||
2965 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2966 | FIXME. The return value appears to never be used. |
c906108c SS |
2967 | |
2968 | FIXME. I think this is not the best way to do this. We should | |
2969 | work on being gentler to the environment while still cleaning up | |
2970 | all stray pointers into the freed symtab. */ | |
2971 | ||
2972 | int | |
fba45db2 | 2973 | free_named_symtabs (char *name) |
c906108c SS |
2974 | { |
2975 | #if 0 | |
2976 | /* FIXME: With the new method of each objfile having it's own | |
2977 | psymtab list, this function needs serious rethinking. In particular, | |
2978 | why was it ever necessary to toss psymtabs with specific compilation | |
2979 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2980 | file? -- fnf | |
2981 | Well, the answer is that some systems permit reloading of particular | |
2982 | compilation units. We want to blow away any old info about these | |
2983 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2984 | ||
52f0bd74 AC |
2985 | struct symtab *s; |
2986 | struct symtab *prev; | |
2987 | struct partial_symtab *ps; | |
c906108c SS |
2988 | struct blockvector *bv; |
2989 | int blewit = 0; | |
2990 | ||
2991 | /* We only wack things if the symbol-reload switch is set. */ | |
2992 | if (!symbol_reloading) | |
2993 | return 0; | |
2994 | ||
2995 | /* Some symbol formats have trouble providing file names... */ | |
2996 | if (name == 0 || *name == '\0') | |
2997 | return 0; | |
2998 | ||
2999 | /* Look for a psymtab with the specified name. */ | |
3000 | ||
3001 | again2: | |
c5aa993b JM |
3002 | for (ps = partial_symtab_list; ps; ps = ps->next) |
3003 | { | |
6314a349 | 3004 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
3005 | { |
3006 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
3007 | goto again2; /* Must restart, chain has been munged */ | |
3008 | } | |
c906108c | 3009 | } |
c906108c SS |
3010 | |
3011 | /* Look for a symtab with the specified name. */ | |
3012 | ||
3013 | for (s = symtab_list; s; s = s->next) | |
3014 | { | |
6314a349 | 3015 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
3016 | break; |
3017 | prev = s; | |
3018 | } | |
3019 | ||
3020 | if (s) | |
3021 | { | |
3022 | if (s == symtab_list) | |
3023 | symtab_list = s->next; | |
3024 | else | |
3025 | prev->next = s->next; | |
3026 | ||
3027 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
3028 | or not they depend on the symtab being freed. This should be |
3029 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
3030 | |
3031 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
3032 | This test is necessary due to a bug in "dbxread.c" that |
3033 | causes empty symtabs to be created for N_SO symbols that | |
3034 | contain the pathname of the object file. (This problem | |
3035 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
3036 | |
3037 | bv = BLOCKVECTOR (s); | |
3038 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
3039 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
3040 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
3041 | { | |
e2e0b3e5 | 3042 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 3043 | name); |
c906108c SS |
3044 | clear_symtab_users_queued++; |
3045 | make_cleanup (clear_symtab_users_once, 0); | |
3046 | blewit = 1; | |
c5aa993b JM |
3047 | } |
3048 | else | |
e2e0b3e5 AC |
3049 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
3050 | name); | |
c906108c SS |
3051 | |
3052 | free_symtab (s); | |
3053 | } | |
3054 | else | |
3055 | { | |
3056 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
3057 | even though no symtab was found, since the file might have |
3058 | been compiled without debugging, and hence not be associated | |
3059 | with a symtab. In order to handle this correctly, we would need | |
3060 | to keep a list of text address ranges for undebuggable files. | |
3061 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
3062 | ; |
3063 | } | |
3064 | ||
3065 | /* FIXME, what about the minimal symbol table? */ | |
3066 | return blewit; | |
3067 | #else | |
3068 | return (0); | |
3069 | #endif | |
3070 | } | |
3071 | \f | |
3072 | /* Allocate and partially fill a partial symtab. It will be | |
3073 | completely filled at the end of the symbol list. | |
3074 | ||
d4f3574e | 3075 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
3076 | |
3077 | struct partial_symtab * | |
fba45db2 KB |
3078 | start_psymtab_common (struct objfile *objfile, |
3079 | struct section_offsets *section_offsets, char *filename, | |
3080 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
3081 | struct partial_symbol **static_syms) | |
c906108c SS |
3082 | { |
3083 | struct partial_symtab *psymtab; | |
3084 | ||
3085 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
3086 | psymtab->section_offsets = section_offsets; |
3087 | psymtab->textlow = textlow; | |
3088 | psymtab->texthigh = psymtab->textlow; /* default */ | |
3089 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
3090 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
3091 | return (psymtab); |
3092 | } | |
3093 | \f | |
2e618c13 AR |
3094 | /* Helper function, initialises partial symbol structure and stashes |
3095 | it into objfile's bcache. Note that our caching mechanism will | |
3096 | use all fields of struct partial_symbol to determine hash value of the | |
3097 | structure. In other words, having two symbols with the same name but | |
3098 | different domain (or address) is possible and correct. */ | |
3099 | ||
11d31d94 | 3100 | static const struct partial_symbol * |
2e618c13 AR |
3101 | add_psymbol_to_bcache (char *name, int namelength, domain_enum domain, |
3102 | enum address_class class, | |
3103 | long val, /* Value as a long */ | |
3104 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
3105 | enum language language, struct objfile *objfile, | |
3106 | int *added) | |
3107 | { | |
69a943f0 TT |
3108 | /* psymbol is static so that there will be no uninitialized gaps in the |
3109 | structure which might contain random data, causing cache misses in | |
3110 | bcache. */ | |
3111 | static struct partial_symbol psymbol; | |
3112 | ||
3113 | /* However, we must ensure that the entire 'value' field has been | |
3114 | zeroed before assigning to it, because an assignment may not | |
3115 | write the entire field. */ | |
3116 | memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value)); | |
2e618c13 AR |
3117 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
3118 | if (val != 0) | |
3119 | { | |
3120 | SYMBOL_VALUE (&psymbol) = val; | |
3121 | } | |
3122 | else | |
3123 | { | |
3124 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
3125 | } | |
3126 | SYMBOL_SECTION (&psymbol) = 0; | |
3127 | SYMBOL_LANGUAGE (&psymbol) = language; | |
3128 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
3129 | PSYMBOL_CLASS (&psymbol) = class; | |
3130 | ||
8c2963fb | 3131 | SYMBOL_SET_NAMES (&psymbol, name, namelength, objfile); |
2e618c13 AR |
3132 | |
3133 | /* Stash the partial symbol away in the cache */ | |
11d31d94 TT |
3134 | return bcache_full (&psymbol, sizeof (struct partial_symbol), |
3135 | objfile->psymbol_cache, added); | |
2e618c13 AR |
3136 | } |
3137 | ||
3138 | /* Helper function, adds partial symbol to the given partial symbol | |
3139 | list. */ | |
3140 | ||
3141 | static void | |
3142 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
11d31d94 | 3143 | const struct partial_symbol *psym, |
2e618c13 AR |
3144 | struct objfile *objfile) |
3145 | { | |
3146 | if (list->next >= list->list + list->size) | |
3147 | extend_psymbol_list (list, objfile); | |
11d31d94 | 3148 | *list->next++ = (struct partial_symbol *) psym; |
2e618c13 AR |
3149 | OBJSTAT (objfile, n_psyms++); |
3150 | } | |
3151 | ||
c906108c | 3152 | /* Add a symbol with a long value to a psymtab. |
5417f6dc | 3153 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
3154 | Return the partial symbol that has been added. */ |
3155 | ||
3156 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
3157 | symbol is so that callers can get access to the symbol's demangled | |
3158 | name, which they don't have any cheap way to determine otherwise. | |
3159 | (Currenly, dwarf2read.c is the only file who uses that information, | |
3160 | though it's possible that other readers might in the future.) | |
3161 | Elena wasn't thrilled about that, and I don't blame her, but we | |
3162 | couldn't come up with a better way to get that information. If | |
3163 | it's needed in other situations, we could consider breaking up | |
3164 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
3165 | cache. */ | |
3166 | ||
3167 | const struct partial_symbol * | |
176620f1 | 3168 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 | 3169 | enum address_class class, |
2e618c13 AR |
3170 | struct psymbol_allocation_list *list, |
3171 | long val, /* Value as a long */ | |
fba45db2 KB |
3172 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
3173 | enum language language, struct objfile *objfile) | |
c906108c | 3174 | { |
11d31d94 | 3175 | const struct partial_symbol *psym; |
2de7ced7 | 3176 | |
2e618c13 | 3177 | int added; |
c906108c SS |
3178 | |
3179 | /* Stash the partial symbol away in the cache */ | |
2e618c13 AR |
3180 | psym = add_psymbol_to_bcache (name, namelength, domain, class, |
3181 | val, coreaddr, language, objfile, &added); | |
c906108c | 3182 | |
2e618c13 AR |
3183 | /* Do not duplicate global partial symbols. */ |
3184 | if (list == &objfile->global_psymbols | |
3185 | && !added) | |
3186 | return psym; | |
5c4e30ca | 3187 | |
2e618c13 AR |
3188 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
3189 | append_psymbol_to_list (list, psym, objfile); | |
5c4e30ca | 3190 | return psym; |
c906108c SS |
3191 | } |
3192 | ||
c906108c SS |
3193 | /* Initialize storage for partial symbols. */ |
3194 | ||
3195 | void | |
fba45db2 | 3196 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
3197 | { |
3198 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
3199 | |
3200 | if (objfile->global_psymbols.list) | |
c906108c | 3201 | { |
2dc74dc1 | 3202 | xfree (objfile->global_psymbols.list); |
c906108c | 3203 | } |
c5aa993b | 3204 | if (objfile->static_psymbols.list) |
c906108c | 3205 | { |
2dc74dc1 | 3206 | xfree (objfile->static_psymbols.list); |
c906108c | 3207 | } |
c5aa993b | 3208 | |
c906108c SS |
3209 | /* Current best guess is that approximately a twentieth |
3210 | of the total symbols (in a debugging file) are global or static | |
3211 | oriented symbols */ | |
c906108c | 3212 | |
c5aa993b JM |
3213 | objfile->global_psymbols.size = total_symbols / 10; |
3214 | objfile->static_psymbols.size = total_symbols / 10; | |
3215 | ||
3216 | if (objfile->global_psymbols.size > 0) | |
c906108c | 3217 | { |
c5aa993b JM |
3218 | objfile->global_psymbols.next = |
3219 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3220 | xmalloc ((objfile->global_psymbols.size |
3221 | * sizeof (struct partial_symbol *))); | |
c906108c | 3222 | } |
c5aa993b | 3223 | if (objfile->static_psymbols.size > 0) |
c906108c | 3224 | { |
c5aa993b JM |
3225 | objfile->static_psymbols.next = |
3226 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3227 | xmalloc ((objfile->static_psymbols.size |
3228 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
3229 | } |
3230 | } | |
3231 | ||
3232 | /* OVERLAYS: | |
3233 | The following code implements an abstraction for debugging overlay sections. | |
3234 | ||
3235 | The target model is as follows: | |
3236 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3237 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3238 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3239 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3240 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3241 | sections should be considered to be mapped from the VMA to the LMA. |
3242 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3243 | For instance, if a section has been mapped then its contents |
c5aa993b | 3244 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3245 | |
3246 | Two levels of debugger support for overlays are available. One is | |
3247 | "manual", in which the debugger relies on the user to tell it which | |
3248 | overlays are currently mapped. This level of support is | |
3249 | implemented entirely in the core debugger, and the information about | |
3250 | whether a section is mapped is kept in the objfile->obj_section table. | |
3251 | ||
3252 | The second level of support is "automatic", and is only available if | |
3253 | the target-specific code provides functionality to read the target's | |
3254 | overlay mapping table, and translate its contents for the debugger | |
3255 | (by updating the mapped state information in the obj_section tables). | |
3256 | ||
3257 | The interface is as follows: | |
c5aa993b JM |
3258 | User commands: |
3259 | overlay map <name> -- tell gdb to consider this section mapped | |
3260 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3261 | overlay list -- list the sections that GDB thinks are mapped | |
3262 | overlay read-target -- get the target's state of what's mapped | |
3263 | overlay off/manual/auto -- set overlay debugging state | |
3264 | Functional interface: | |
3265 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3266 | section, return that section. | |
5417f6dc | 3267 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 3268 | the pc, either in its VMA or its LMA |
714835d5 | 3269 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
3270 | section_is_overlay(sect): true if section's VMA != LMA |
3271 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3272 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3273 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3274 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3275 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3276 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3277 | either in VMA or LMA depending on whether | |
3278 | the symbol's section is currently mapped | |
c906108c SS |
3279 | */ |
3280 | ||
3281 | /* Overlay debugging state: */ | |
3282 | ||
d874f1e2 | 3283 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
3284 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
3285 | ||
c906108c | 3286 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3287 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3288 | SECTION is loaded at an address different from where it will "run". */ |
3289 | ||
3290 | int | |
714835d5 | 3291 | section_is_overlay (struct obj_section *section) |
c906108c | 3292 | { |
714835d5 UW |
3293 | if (overlay_debugging && section) |
3294 | { | |
3295 | bfd *abfd = section->objfile->obfd; | |
3296 | asection *bfd_section = section->the_bfd_section; | |
3297 | ||
3298 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
3299 | && bfd_section_lma (abfd, bfd_section) | |
3300 | != bfd_section_vma (abfd, bfd_section)) | |
3301 | return 1; | |
3302 | } | |
c906108c SS |
3303 | |
3304 | return 0; | |
3305 | } | |
3306 | ||
3307 | /* Function: overlay_invalidate_all (void) | |
3308 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3309 | ||
3310 | static void | |
fba45db2 | 3311 | overlay_invalidate_all (void) |
c906108c | 3312 | { |
c5aa993b | 3313 | struct objfile *objfile; |
c906108c SS |
3314 | struct obj_section *sect; |
3315 | ||
3316 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3317 | if (section_is_overlay (sect)) |
3318 | sect->ovly_mapped = -1; | |
c906108c SS |
3319 | } |
3320 | ||
714835d5 | 3321 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3322 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3323 | |
3324 | Access to the ovly_mapped flag is restricted to this function, so | |
3325 | that we can do automatic update. If the global flag | |
3326 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3327 | overlay_invalidate_all. If the mapped state of the particular | |
3328 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3329 | ||
714835d5 UW |
3330 | int |
3331 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3332 | { |
9216df95 UW |
3333 | struct gdbarch *gdbarch; |
3334 | ||
714835d5 | 3335 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3336 | return 0; |
3337 | ||
c5aa993b | 3338 | switch (overlay_debugging) |
c906108c SS |
3339 | { |
3340 | default: | |
d874f1e2 | 3341 | case ovly_off: |
c5aa993b | 3342 | return 0; /* overlay debugging off */ |
d874f1e2 | 3343 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3344 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 3345 | there's really nothing useful to do here (can't really go auto) */ |
9216df95 UW |
3346 | gdbarch = get_objfile_arch (osect->objfile); |
3347 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3348 | { |
3349 | if (overlay_cache_invalid) | |
3350 | { | |
3351 | overlay_invalidate_all (); | |
3352 | overlay_cache_invalid = 0; | |
3353 | } | |
3354 | if (osect->ovly_mapped == -1) | |
9216df95 | 3355 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3356 | } |
3357 | /* fall thru to manual case */ | |
d874f1e2 | 3358 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3359 | return osect->ovly_mapped == 1; |
3360 | } | |
3361 | } | |
3362 | ||
c906108c SS |
3363 | /* Function: pc_in_unmapped_range |
3364 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3365 | ||
3366 | CORE_ADDR | |
714835d5 | 3367 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3368 | { |
714835d5 UW |
3369 | if (section_is_overlay (section)) |
3370 | { | |
3371 | bfd *abfd = section->objfile->obfd; | |
3372 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3373 | |
714835d5 UW |
3374 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3375 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3376 | CORE_ADDR offset = obj_section_offset (section); | |
3377 | ||
3378 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3379 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3380 | return 1; | |
3381 | } | |
c906108c | 3382 | |
c906108c SS |
3383 | return 0; |
3384 | } | |
3385 | ||
3386 | /* Function: pc_in_mapped_range | |
3387 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3388 | ||
3389 | CORE_ADDR | |
714835d5 | 3390 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3391 | { |
714835d5 UW |
3392 | if (section_is_overlay (section)) |
3393 | { | |
3394 | if (obj_section_addr (section) <= pc | |
3395 | && pc < obj_section_endaddr (section)) | |
3396 | return 1; | |
3397 | } | |
c906108c | 3398 | |
c906108c SS |
3399 | return 0; |
3400 | } | |
3401 | ||
9ec8e6a0 JB |
3402 | |
3403 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3404 | otherwise. */ | |
b9362cc7 | 3405 | static int |
714835d5 | 3406 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3407 | { |
714835d5 UW |
3408 | CORE_ADDR a_start = obj_section_addr (a); |
3409 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3410 | CORE_ADDR b_start = obj_section_addr (b); | |
3411 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3412 | |
3413 | return (a_start < b_end && b_start < a_end); | |
3414 | } | |
3415 | ||
c906108c SS |
3416 | /* Function: overlay_unmapped_address (PC, SECTION) |
3417 | Returns the address corresponding to PC in the unmapped (load) range. | |
3418 | May be the same as PC. */ | |
3419 | ||
3420 | CORE_ADDR | |
714835d5 | 3421 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3422 | { |
714835d5 UW |
3423 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3424 | { | |
3425 | bfd *abfd = section->objfile->obfd; | |
3426 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3427 | |
714835d5 UW |
3428 | return pc + bfd_section_lma (abfd, bfd_section) |
3429 | - bfd_section_vma (abfd, bfd_section); | |
3430 | } | |
c906108c SS |
3431 | |
3432 | return pc; | |
3433 | } | |
3434 | ||
3435 | /* Function: overlay_mapped_address (PC, SECTION) | |
3436 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3437 | May be the same as PC. */ | |
3438 | ||
3439 | CORE_ADDR | |
714835d5 | 3440 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3441 | { |
714835d5 UW |
3442 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3443 | { | |
3444 | bfd *abfd = section->objfile->obfd; | |
3445 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3446 | |
714835d5 UW |
3447 | return pc + bfd_section_vma (abfd, bfd_section) |
3448 | - bfd_section_lma (abfd, bfd_section); | |
3449 | } | |
c906108c SS |
3450 | |
3451 | return pc; | |
3452 | } | |
3453 | ||
3454 | ||
5417f6dc | 3455 | /* Function: symbol_overlayed_address |
c906108c SS |
3456 | Return one of two addresses (relative to the VMA or to the LMA), |
3457 | depending on whether the section is mapped or not. */ | |
3458 | ||
c5aa993b | 3459 | CORE_ADDR |
714835d5 | 3460 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3461 | { |
3462 | if (overlay_debugging) | |
3463 | { | |
3464 | /* If the symbol has no section, just return its regular address. */ | |
3465 | if (section == 0) | |
3466 | return address; | |
3467 | /* If the symbol's section is not an overlay, just return its address */ | |
3468 | if (!section_is_overlay (section)) | |
3469 | return address; | |
3470 | /* If the symbol's section is mapped, just return its address */ | |
3471 | if (section_is_mapped (section)) | |
3472 | return address; | |
3473 | /* | |
3474 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3475 | * then return its LOADED address rather than its vma address!! | |
3476 | */ | |
3477 | return overlay_unmapped_address (address, section); | |
3478 | } | |
3479 | return address; | |
3480 | } | |
3481 | ||
5417f6dc | 3482 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3483 | Return the best-match overlay section for PC: |
3484 | If PC matches a mapped overlay section's VMA, return that section. | |
3485 | Else if PC matches an unmapped section's VMA, return that section. | |
3486 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3487 | ||
714835d5 | 3488 | struct obj_section * |
fba45db2 | 3489 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3490 | { |
c5aa993b | 3491 | struct objfile *objfile; |
c906108c SS |
3492 | struct obj_section *osect, *best_match = NULL; |
3493 | ||
3494 | if (overlay_debugging) | |
3495 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3496 | if (section_is_overlay (osect)) |
c5aa993b | 3497 | { |
714835d5 | 3498 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3499 | { |
714835d5 UW |
3500 | if (section_is_mapped (osect)) |
3501 | return osect; | |
c5aa993b JM |
3502 | else |
3503 | best_match = osect; | |
3504 | } | |
714835d5 | 3505 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3506 | best_match = osect; |
3507 | } | |
714835d5 | 3508 | return best_match; |
c906108c SS |
3509 | } |
3510 | ||
3511 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3512 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3513 | currently marked as MAPPED, return that section. Else return NULL. */ |
3514 | ||
714835d5 | 3515 | struct obj_section * |
fba45db2 | 3516 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3517 | { |
c5aa993b | 3518 | struct objfile *objfile; |
c906108c SS |
3519 | struct obj_section *osect; |
3520 | ||
3521 | if (overlay_debugging) | |
3522 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3523 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3524 | return osect; | |
c906108c SS |
3525 | |
3526 | return NULL; | |
3527 | } | |
3528 | ||
3529 | /* Function: list_overlays_command | |
3530 | Print a list of mapped sections and their PC ranges */ | |
3531 | ||
3532 | void | |
fba45db2 | 3533 | list_overlays_command (char *args, int from_tty) |
c906108c | 3534 | { |
c5aa993b JM |
3535 | int nmapped = 0; |
3536 | struct objfile *objfile; | |
c906108c SS |
3537 | struct obj_section *osect; |
3538 | ||
3539 | if (overlay_debugging) | |
3540 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3541 | if (section_is_mapped (osect)) |
c5aa993b | 3542 | { |
5af949e3 | 3543 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3544 | const char *name; |
3545 | bfd_vma lma, vma; | |
3546 | int size; | |
3547 | ||
3548 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3549 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3550 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3551 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3552 | ||
3553 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3554 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3555 | puts_filtered (" - "); |
5af949e3 | 3556 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3557 | printf_filtered (", mapped at "); |
5af949e3 | 3558 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3559 | puts_filtered (" - "); |
5af949e3 | 3560 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3561 | puts_filtered ("\n"); |
3562 | ||
3563 | nmapped++; | |
3564 | } | |
c906108c | 3565 | if (nmapped == 0) |
a3f17187 | 3566 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3567 | } |
3568 | ||
3569 | /* Function: map_overlay_command | |
3570 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3571 | ||
3572 | void | |
fba45db2 | 3573 | map_overlay_command (char *args, int from_tty) |
c906108c | 3574 | { |
c5aa993b JM |
3575 | struct objfile *objfile, *objfile2; |
3576 | struct obj_section *sec, *sec2; | |
c906108c SS |
3577 | |
3578 | if (!overlay_debugging) | |
8a3fe4f8 | 3579 | error (_("\ |
515ad16c | 3580 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3581 | the 'overlay manual' command.")); |
c906108c SS |
3582 | |
3583 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3584 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3585 | |
3586 | /* First, find a section matching the user supplied argument */ | |
3587 | ALL_OBJSECTIONS (objfile, sec) | |
3588 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3589 | { |
3590 | /* Now, check to see if the section is an overlay. */ | |
714835d5 | 3591 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3592 | continue; /* not an overlay section */ |
3593 | ||
3594 | /* Mark the overlay as "mapped" */ | |
3595 | sec->ovly_mapped = 1; | |
3596 | ||
3597 | /* Next, make a pass and unmap any sections that are | |
3598 | overlapped by this new section: */ | |
3599 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3600 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3601 | { |
3602 | if (info_verbose) | |
a3f17187 | 3603 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3604 | bfd_section_name (objfile->obfd, |
3605 | sec2->the_bfd_section)); | |
3606 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3607 | } | |
3608 | return; | |
3609 | } | |
8a3fe4f8 | 3610 | error (_("No overlay section called %s"), args); |
c906108c SS |
3611 | } |
3612 | ||
3613 | /* Function: unmap_overlay_command | |
5417f6dc | 3614 | Mark the overlay section as unmapped |
c906108c SS |
3615 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3616 | ||
3617 | void | |
fba45db2 | 3618 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3619 | { |
c5aa993b | 3620 | struct objfile *objfile; |
c906108c SS |
3621 | struct obj_section *sec; |
3622 | ||
3623 | if (!overlay_debugging) | |
8a3fe4f8 | 3624 | error (_("\ |
515ad16c | 3625 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3626 | the 'overlay manual' command.")); |
c906108c SS |
3627 | |
3628 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3629 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3630 | |
3631 | /* First, find a section matching the user supplied argument */ | |
3632 | ALL_OBJSECTIONS (objfile, sec) | |
3633 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3634 | { |
3635 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3636 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3637 | sec->ovly_mapped = 0; |
3638 | return; | |
3639 | } | |
8a3fe4f8 | 3640 | error (_("No overlay section called %s"), args); |
c906108c SS |
3641 | } |
3642 | ||
3643 | /* Function: overlay_auto_command | |
3644 | A utility command to turn on overlay debugging. | |
3645 | Possibly this should be done via a set/show command. */ | |
3646 | ||
3647 | static void | |
fba45db2 | 3648 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3649 | { |
d874f1e2 | 3650 | overlay_debugging = ovly_auto; |
1900040c | 3651 | enable_overlay_breakpoints (); |
c906108c | 3652 | if (info_verbose) |
a3f17187 | 3653 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3654 | } |
3655 | ||
3656 | /* Function: overlay_manual_command | |
3657 | A utility command to turn on overlay debugging. | |
3658 | Possibly this should be done via a set/show command. */ | |
3659 | ||
3660 | static void | |
fba45db2 | 3661 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3662 | { |
d874f1e2 | 3663 | overlay_debugging = ovly_on; |
1900040c | 3664 | disable_overlay_breakpoints (); |
c906108c | 3665 | if (info_verbose) |
a3f17187 | 3666 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3667 | } |
3668 | ||
3669 | /* Function: overlay_off_command | |
3670 | A utility command to turn on overlay debugging. | |
3671 | Possibly this should be done via a set/show command. */ | |
3672 | ||
3673 | static void | |
fba45db2 | 3674 | overlay_off_command (char *args, int from_tty) |
c906108c | 3675 | { |
d874f1e2 | 3676 | overlay_debugging = ovly_off; |
1900040c | 3677 | disable_overlay_breakpoints (); |
c906108c | 3678 | if (info_verbose) |
a3f17187 | 3679 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3680 | } |
3681 | ||
3682 | static void | |
fba45db2 | 3683 | overlay_load_command (char *args, int from_tty) |
c906108c | 3684 | { |
e17c207e UW |
3685 | struct gdbarch *gdbarch = get_current_arch (); |
3686 | ||
3687 | if (gdbarch_overlay_update_p (gdbarch)) | |
3688 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3689 | else |
8a3fe4f8 | 3690 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3691 | } |
3692 | ||
3693 | /* Function: overlay_command | |
3694 | A place-holder for a mis-typed command */ | |
3695 | ||
3696 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3697 | struct cmd_list_element *overlaylist; | |
3698 | ||
3699 | static void | |
fba45db2 | 3700 | overlay_command (char *args, int from_tty) |
c906108c | 3701 | { |
c5aa993b | 3702 | printf_unfiltered |
c906108c SS |
3703 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3704 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3705 | } | |
3706 | ||
3707 | ||
3708 | /* Target Overlays for the "Simplest" overlay manager: | |
3709 | ||
5417f6dc RM |
3710 | This is GDB's default target overlay layer. It works with the |
3711 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3712 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3713 | so targets that use a different runtime overlay manager can |
c906108c SS |
3714 | substitute their own overlay_update function and take over the |
3715 | function pointer. | |
3716 | ||
3717 | The overlay_update function pokes around in the target's data structures | |
3718 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3719 | this information. | |
3720 | ||
3721 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3722 | unsigned _novlys; /# number of overlay sections #/ |
3723 | unsigned _ovly_table[_novlys][4] = { | |
3724 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3725 | {..., ..., ..., ...}, | |
3726 | } | |
3727 | unsigned _novly_regions; /# number of overlay regions #/ | |
3728 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3729 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3730 | {..., ..., ...}, | |
3731 | } | |
c906108c SS |
3732 | These functions will attempt to update GDB's mappedness state in the |
3733 | symbol section table, based on the target's mappedness state. | |
3734 | ||
3735 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3736 | attempt to detect when the cached copy is invalidated. The main | |
3737 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3738 | the cached table and re-reads only the entry for that section from | |
3739 | the target (whenever possible). | |
3740 | */ | |
3741 | ||
3742 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3743 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3744 | #if 0 |
c5aa993b | 3745 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3746 | #endif |
c5aa993b | 3747 | static unsigned cache_novlys = 0; |
c906108c | 3748 | #if 0 |
c5aa993b | 3749 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3750 | #endif |
3751 | static CORE_ADDR cache_ovly_table_base = 0; | |
3752 | #if 0 | |
3753 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3754 | #endif | |
c5aa993b JM |
3755 | enum ovly_index |
3756 | { | |
3757 | VMA, SIZE, LMA, MAPPED | |
3758 | }; | |
c906108c SS |
3759 | |
3760 | /* Throw away the cached copy of _ovly_table */ | |
3761 | static void | |
fba45db2 | 3762 | simple_free_overlay_table (void) |
c906108c SS |
3763 | { |
3764 | if (cache_ovly_table) | |
b8c9b27d | 3765 | xfree (cache_ovly_table); |
c5aa993b | 3766 | cache_novlys = 0; |
c906108c SS |
3767 | cache_ovly_table = NULL; |
3768 | cache_ovly_table_base = 0; | |
3769 | } | |
3770 | ||
3771 | #if 0 | |
3772 | /* Throw away the cached copy of _ovly_region_table */ | |
3773 | static void | |
fba45db2 | 3774 | simple_free_overlay_region_table (void) |
c906108c SS |
3775 | { |
3776 | if (cache_ovly_region_table) | |
b8c9b27d | 3777 | xfree (cache_ovly_region_table); |
c5aa993b | 3778 | cache_novly_regions = 0; |
c906108c SS |
3779 | cache_ovly_region_table = NULL; |
3780 | cache_ovly_region_table_base = 0; | |
3781 | } | |
3782 | #endif | |
3783 | ||
9216df95 | 3784 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c906108c SS |
3785 | Convert to host order. int LEN is number of ints */ |
3786 | static void | |
9216df95 | 3787 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3788 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3789 | { |
34c0bd93 | 3790 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3791 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3792 | int i; |
c906108c | 3793 | |
9216df95 | 3794 | read_memory (memaddr, buf, len * size); |
c906108c | 3795 | for (i = 0; i < len; i++) |
e17a4113 | 3796 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3797 | } |
3798 | ||
3799 | /* Find and grab a copy of the target _ovly_table | |
3800 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3801 | static int |
fba45db2 | 3802 | simple_read_overlay_table (void) |
c906108c | 3803 | { |
0d43edd1 | 3804 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3805 | struct gdbarch *gdbarch; |
3806 | int word_size; | |
e17a4113 | 3807 | enum bfd_endian byte_order; |
c906108c SS |
3808 | |
3809 | simple_free_overlay_table (); | |
9b27852e | 3810 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3811 | if (! novlys_msym) |
c906108c | 3812 | { |
8a3fe4f8 | 3813 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3814 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3815 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3816 | return 0; |
c906108c | 3817 | } |
0d43edd1 | 3818 | |
9b27852e | 3819 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3820 | if (! ovly_table_msym) |
3821 | { | |
8a3fe4f8 | 3822 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3823 | "`_ovly_table' array\n" |
8a3fe4f8 | 3824 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3825 | return 0; |
3826 | } | |
3827 | ||
9216df95 UW |
3828 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3829 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3830 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3831 | |
e17a4113 UW |
3832 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3833 | 4, byte_order); | |
0d43edd1 JB |
3834 | cache_ovly_table |
3835 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3836 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3837 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3838 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3839 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3840 | |
c5aa993b | 3841 | return 1; /* SUCCESS */ |
c906108c SS |
3842 | } |
3843 | ||
3844 | #if 0 | |
3845 | /* Find and grab a copy of the target _ovly_region_table | |
3846 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3847 | static int |
fba45db2 | 3848 | simple_read_overlay_region_table (void) |
c906108c SS |
3849 | { |
3850 | struct minimal_symbol *msym; | |
e17a4113 UW |
3851 | struct gdbarch *gdbarch; |
3852 | int word_size; | |
3853 | enum bfd_endian byte_order; | |
c906108c SS |
3854 | |
3855 | simple_free_overlay_region_table (); | |
9b27852e | 3856 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
e17a4113 | 3857 | if (msym == NULL) |
c5aa993b | 3858 | return 0; /* failure */ |
e17a4113 UW |
3859 | |
3860 | gdbarch = get_objfile_arch (msymbol_objfile (msym)); | |
3861 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
3862 | byte_order = gdbarch_byte_order (gdbarch); | |
3863 | ||
3864 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), | |
3865 | 4, byte_order); | |
3866 | ||
c906108c SS |
3867 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3868 | if (cache_ovly_region_table != NULL) | |
3869 | { | |
9b27852e | 3870 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3871 | if (msym != NULL) |
3872 | { | |
3873 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3874 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3875 | (unsigned int *) cache_ovly_region_table, |
e17a4113 UW |
3876 | cache_novly_regions * 3, |
3877 | word_size, byte_order); | |
c906108c | 3878 | } |
c5aa993b JM |
3879 | else |
3880 | return 0; /* failure */ | |
c906108c | 3881 | } |
c5aa993b JM |
3882 | else |
3883 | return 0; /* failure */ | |
3884 | return 1; /* SUCCESS */ | |
c906108c SS |
3885 | } |
3886 | #endif | |
3887 | ||
5417f6dc | 3888 | /* Function: simple_overlay_update_1 |
c906108c SS |
3889 | A helper function for simple_overlay_update. Assuming a cached copy |
3890 | of _ovly_table exists, look through it to find an entry whose vma, | |
3891 | lma and size match those of OSECT. Re-read the entry and make sure | |
3892 | it still matches OSECT (else the table may no longer be valid). | |
3893 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3894 | success, 0 for failure. */ | |
3895 | ||
3896 | static int | |
fba45db2 | 3897 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3898 | { |
3899 | int i, size; | |
fbd35540 MS |
3900 | bfd *obfd = osect->objfile->obfd; |
3901 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3902 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3903 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3904 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3905 | |
2c500098 | 3906 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3907 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3908 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3909 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3910 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3911 | { |
9216df95 UW |
3912 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3913 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3914 | 4, word_size, byte_order); |
fbd35540 MS |
3915 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3916 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3917 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3918 | { |
3919 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3920 | return 1; | |
3921 | } | |
fbd35540 | 3922 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3923 | return 0; |
3924 | } | |
3925 | return 0; | |
3926 | } | |
3927 | ||
3928 | /* Function: simple_overlay_update | |
5417f6dc RM |
3929 | If OSECT is NULL, then update all sections' mapped state |
3930 | (after re-reading the entire target _ovly_table). | |
3931 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3932 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3933 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3934 | re-read the entire cache, and go ahead and update all sections. */ |
3935 | ||
1c772458 | 3936 | void |
fba45db2 | 3937 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3938 | { |
c5aa993b | 3939 | struct objfile *objfile; |
c906108c SS |
3940 | |
3941 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3942 | if (osect) | |
3943 | /* Have we got a cached copy of the target's overlay table? */ | |
3944 | if (cache_ovly_table != NULL) | |
3945 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3946 | if (cache_ovly_table_base == |
9b27852e | 3947 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3948 | /* Then go ahead and try to look up this single section in the cache */ |
3949 | if (simple_overlay_update_1 (osect)) | |
3950 | /* Found it! We're done. */ | |
3951 | return; | |
3952 | ||
3953 | /* Cached table no good: need to read the entire table anew. | |
3954 | Or else we want all the sections, in which case it's actually | |
3955 | more efficient to read the whole table in one block anyway. */ | |
3956 | ||
0d43edd1 JB |
3957 | if (! simple_read_overlay_table ()) |
3958 | return; | |
3959 | ||
c906108c SS |
3960 | /* Now may as well update all sections, even if only one was requested. */ |
3961 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3962 | if (section_is_overlay (osect)) |
c5aa993b JM |
3963 | { |
3964 | int i, size; | |
fbd35540 MS |
3965 | bfd *obfd = osect->objfile->obfd; |
3966 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3967 | |
2c500098 | 3968 | size = bfd_get_section_size (bsect); |
c5aa993b | 3969 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3970 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3971 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3972 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3973 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3974 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3975 | break; /* finished with inner for loop: break out */ | |
3976 | } | |
3977 | } | |
c906108c SS |
3978 | } |
3979 | ||
086df311 DJ |
3980 | /* Set the output sections and output offsets for section SECTP in |
3981 | ABFD. The relocation code in BFD will read these offsets, so we | |
3982 | need to be sure they're initialized. We map each section to itself, | |
3983 | with no offset; this means that SECTP->vma will be honored. */ | |
3984 | ||
3985 | static void | |
3986 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3987 | { | |
3988 | sectp->output_section = sectp; | |
3989 | sectp->output_offset = 0; | |
3990 | } | |
3991 | ||
3992 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3993 | contents are stored in BUF if it is non-NULL, or returned in a | |
3994 | malloc'd buffer otherwise. | |
3995 | ||
3996 | For some platforms and debug info formats, shared libraries contain | |
3997 | relocations against the debug sections (particularly for DWARF-2; | |
3998 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3999 | the version of the linker in use). Also, ELF object files naturally | |
4000 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
4001 | the relocations in order to get the locations of symbols correct. |
4002 | Another example that may require relocation processing, is the | |
4003 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
4004 | debug section. */ | |
086df311 DJ |
4005 | |
4006 | bfd_byte * | |
4007 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
4008 | { | |
065a2c74 | 4009 | /* We're only interested in sections with relocation |
086df311 DJ |
4010 | information. */ |
4011 | if ((sectp->flags & SEC_RELOC) == 0) | |
4012 | return NULL; | |
086df311 DJ |
4013 | |
4014 | /* We will handle section offsets properly elsewhere, so relocate as if | |
4015 | all sections begin at 0. */ | |
4016 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
4017 | ||
97606a13 | 4018 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 4019 | } |
c906108c | 4020 | |
31d99776 DJ |
4021 | struct symfile_segment_data * |
4022 | get_symfile_segment_data (bfd *abfd) | |
4023 | { | |
4024 | struct sym_fns *sf = find_sym_fns (abfd); | |
4025 | ||
4026 | if (sf == NULL) | |
4027 | return NULL; | |
4028 | ||
4029 | return sf->sym_segments (abfd); | |
4030 | } | |
4031 | ||
4032 | void | |
4033 | free_symfile_segment_data (struct symfile_segment_data *data) | |
4034 | { | |
4035 | xfree (data->segment_bases); | |
4036 | xfree (data->segment_sizes); | |
4037 | xfree (data->segment_info); | |
4038 | xfree (data); | |
4039 | } | |
4040 | ||
28c32713 JB |
4041 | |
4042 | /* Given: | |
4043 | - DATA, containing segment addresses from the object file ABFD, and | |
4044 | the mapping from ABFD's sections onto the segments that own them, | |
4045 | and | |
4046 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
4047 | segment addresses reported by the target, | |
4048 | store the appropriate offsets for each section in OFFSETS. | |
4049 | ||
4050 | If there are fewer entries in SEGMENT_BASES than there are segments | |
4051 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
4052 | ||
8d385431 DJ |
4053 | If there are more entries, then ignore the extra. The target may |
4054 | not be able to distinguish between an empty data segment and a | |
4055 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
4056 | int |
4057 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
4058 | struct section_offsets *offsets, | |
4059 | int num_segment_bases, | |
4060 | const CORE_ADDR *segment_bases) | |
4061 | { | |
4062 | int i; | |
4063 | asection *sect; | |
4064 | ||
28c32713 JB |
4065 | /* It doesn't make sense to call this function unless you have some |
4066 | segment base addresses. */ | |
4067 | gdb_assert (segment_bases > 0); | |
4068 | ||
31d99776 DJ |
4069 | /* If we do not have segment mappings for the object file, we |
4070 | can not relocate it by segments. */ | |
4071 | gdb_assert (data != NULL); | |
4072 | gdb_assert (data->num_segments > 0); | |
4073 | ||
31d99776 DJ |
4074 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
4075 | { | |
31d99776 DJ |
4076 | int which = data->segment_info[i]; |
4077 | ||
28c32713 JB |
4078 | gdb_assert (0 <= which && which <= data->num_segments); |
4079 | ||
4080 | /* Don't bother computing offsets for sections that aren't | |
4081 | loaded as part of any segment. */ | |
4082 | if (! which) | |
4083 | continue; | |
4084 | ||
4085 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
4086 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 4087 | if (which > num_segment_bases) |
28c32713 | 4088 | which = num_segment_bases; |
31d99776 | 4089 | |
28c32713 JB |
4090 | offsets->offsets[i] = (segment_bases[which - 1] |
4091 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
4092 | } |
4093 | ||
4094 | return 1; | |
4095 | } | |
4096 | ||
4097 | static void | |
4098 | symfile_find_segment_sections (struct objfile *objfile) | |
4099 | { | |
4100 | bfd *abfd = objfile->obfd; | |
4101 | int i; | |
4102 | asection *sect; | |
4103 | struct symfile_segment_data *data; | |
4104 | ||
4105 | data = get_symfile_segment_data (objfile->obfd); | |
4106 | if (data == NULL) | |
4107 | return; | |
4108 | ||
4109 | if (data->num_segments != 1 && data->num_segments != 2) | |
4110 | { | |
4111 | free_symfile_segment_data (data); | |
4112 | return; | |
4113 | } | |
4114 | ||
4115 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
4116 | { | |
4117 | CORE_ADDR vma; | |
4118 | int which = data->segment_info[i]; | |
4119 | ||
4120 | if (which == 1) | |
4121 | { | |
4122 | if (objfile->sect_index_text == -1) | |
4123 | objfile->sect_index_text = sect->index; | |
4124 | ||
4125 | if (objfile->sect_index_rodata == -1) | |
4126 | objfile->sect_index_rodata = sect->index; | |
4127 | } | |
4128 | else if (which == 2) | |
4129 | { | |
4130 | if (objfile->sect_index_data == -1) | |
4131 | objfile->sect_index_data = sect->index; | |
4132 | ||
4133 | if (objfile->sect_index_bss == -1) | |
4134 | objfile->sect_index_bss = sect->index; | |
4135 | } | |
4136 | } | |
4137 | ||
4138 | free_symfile_segment_data (data); | |
4139 | } | |
4140 | ||
c906108c | 4141 | void |
fba45db2 | 4142 | _initialize_symfile (void) |
c906108c SS |
4143 | { |
4144 | struct cmd_list_element *c; | |
c5aa993b | 4145 | |
1a966eab AC |
4146 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
4147 | Load symbol table from executable file FILE.\n\ | |
c906108c | 4148 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 4149 | to execute."), &cmdlist); |
5ba2abeb | 4150 | set_cmd_completer (c, filename_completer); |
c906108c | 4151 | |
1a966eab | 4152 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 4153 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 4154 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 4155 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
4156 | The optional arguments are section-name section-address pairs and\n\ |
4157 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 4158 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 4159 | &cmdlist); |
5ba2abeb | 4160 | set_cmd_completer (c, filename_completer); |
c906108c | 4161 | |
1a966eab AC |
4162 | c = add_cmd ("load", class_files, load_command, _("\ |
4163 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
4164 | for access from GDB.\n\ |
4165 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 4166 | set_cmd_completer (c, filename_completer); |
c906108c | 4167 | |
5bf193a2 AC |
4168 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
4169 | &symbol_reloading, _("\ | |
4170 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
4171 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
4172 | NULL, | |
920d2a44 | 4173 | show_symbol_reloading, |
5bf193a2 | 4174 | &setlist, &showlist); |
c906108c | 4175 | |
c5aa993b | 4176 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 4177 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
4178 | "overlay ", 0, &cmdlist); |
4179 | ||
4180 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
4181 | add_com_alias ("ov", "overlay", class_alias, 1); | |
4182 | ||
c5aa993b | 4183 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 4184 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 4185 | |
c5aa993b | 4186 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 4187 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 4188 | |
c5aa993b | 4189 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 4190 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 4191 | |
c5aa993b | 4192 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 4193 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 4194 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 4195 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 4196 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 4197 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 4198 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 4199 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
4200 | |
4201 | /* Filename extension to source language lookup table: */ | |
4202 | init_filename_language_table (); | |
26c41df3 AC |
4203 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4204 | &ext_args, _("\ | |
4205 | Set mapping between filename extension and source language."), _("\ | |
4206 | Show mapping between filename extension and source language."), _("\ | |
4207 | Usage: set extension-language .foo bar"), | |
4208 | set_ext_lang_command, | |
920d2a44 | 4209 | show_ext_args, |
26c41df3 | 4210 | &setlist, &showlist); |
c906108c | 4211 | |
c5aa993b | 4212 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4213 | _("All filename extensions associated with a source language.")); |
917317f4 | 4214 | |
525226b5 AC |
4215 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4216 | &debug_file_directory, _("\ | |
24ddea62 JK |
4217 | Set the directories where separate debug symbols are searched for."), _("\ |
4218 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
4219 | Separate debug symbols are first searched for in the same\n\ |
4220 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4221 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 4222 | each global debug-file-directory component prepended."), |
525226b5 | 4223 | NULL, |
920d2a44 | 4224 | show_debug_file_directory, |
525226b5 | 4225 | &setlist, &showlist); |
c906108c | 4226 | } |