Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4c38e0a4 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
777ea8f1 | 5 | Free Software Foundation, Inc. |
8926118c | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support, using pieces from other GDB modules. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
e17c207e | 25 | #include "arch-utils.h" |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "gdbcore.h" | |
30 | #include "frame.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
fb14de7b UW |
41 | #include "inferior.h" |
42 | #include "regcache.h" | |
5b5d99cf | 43 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 44 | #include "gdb-stabs.h" |
04ea0df1 | 45 | #include "gdb_obstack.h" |
d75b5104 | 46 | #include "completer.h" |
af5f3db6 | 47 | #include "bcache.h" |
2de7ced7 | 48 | #include "hashtab.h" |
dbda9972 | 49 | #include "readline/readline.h" |
7e8580c1 | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
ea53e89f | 52 | #include "observer.h" |
c1bd25fd | 53 | #include "exec.h" |
9bdcbae7 | 54 | #include "parser-defs.h" |
8756216b | 55 | #include "varobj.h" |
77069918 | 56 | #include "elf-bfd.h" |
e85a822c | 57 | #include "solib.h" |
f1838a98 | 58 | #include "remote.h" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
62 | #include "gdb_string.h" | |
63 | #include "gdb_stat.h" | |
64 | #include <ctype.h> | |
65 | #include <time.h> | |
2b71414d | 66 | #include <sys/time.h> |
c906108c | 67 | |
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 | |
a14ed312 | 100 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 101 | |
a14ed312 | 102 | bfd *symfile_bfd_open (char *); |
c906108c | 103 | |
0e931cf0 JB |
104 | int get_section_index (struct objfile *, char *); |
105 | ||
31d99776 | 106 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 107 | |
a14ed312 | 108 | static void decrement_reading_symtab (void *); |
c906108c | 109 | |
a14ed312 | 110 | static void overlay_invalidate_all (void); |
c906108c | 111 | |
a14ed312 | 112 | void list_overlays_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | void map_overlay_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | void unmap_overlay_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void overlay_auto_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void overlay_manual_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_off_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void overlay_load_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void overlay_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void simple_free_overlay_table (void); |
c906108c | 129 | |
e17a4113 UW |
130 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
131 | enum bfd_endian); | |
c906108c | 132 | |
a14ed312 | 133 | static int simple_read_overlay_table (void); |
c906108c | 134 | |
a14ed312 | 135 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 136 | |
a14ed312 | 137 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 138 | |
a14ed312 | 139 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 140 | |
a14ed312 | 141 | static void init_filename_language_table (void); |
392a587b | 142 | |
31d99776 DJ |
143 | static void symfile_find_segment_sections (struct objfile *objfile); |
144 | ||
a14ed312 | 145 | void _initialize_symfile (void); |
c906108c SS |
146 | |
147 | /* List of all available sym_fns. On gdb startup, each object file reader | |
148 | calls add_symtab_fns() to register information on each format it is | |
149 | prepared to read. */ | |
150 | ||
151 | static struct sym_fns *symtab_fns = NULL; | |
152 | ||
153 | /* Flag for whether user will be reloading symbols multiple times. | |
154 | Defaults to ON for VxWorks, otherwise OFF. */ | |
155 | ||
156 | #ifdef SYMBOL_RELOADING_DEFAULT | |
157 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
158 | #else | |
159 | int symbol_reloading = 0; | |
160 | #endif | |
920d2a44 AC |
161 | static void |
162 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
163 | struct cmd_list_element *c, const char *value) | |
164 | { | |
165 | fprintf_filtered (file, _("\ | |
166 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
167 | value); | |
168 | } | |
169 | ||
b7209cb4 FF |
170 | /* If non-zero, shared library symbols will be added automatically |
171 | when the inferior is created, new libraries are loaded, or when | |
172 | attaching to the inferior. This is almost always what users will | |
173 | want to have happen; but for very large programs, the startup time | |
174 | will be excessive, and so if this is a problem, the user can clear | |
175 | this flag and then add the shared library symbols as needed. Note | |
176 | that there is a potential for confusion, since if the shared | |
c906108c | 177 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 178 | report all the functions that are actually present. */ |
c906108c SS |
179 | |
180 | int auto_solib_add = 1; | |
b7209cb4 FF |
181 | |
182 | /* For systems that support it, a threshold size in megabytes. If | |
183 | automatically adding a new library's symbol table to those already | |
184 | known to the debugger would cause the total shared library symbol | |
185 | size to exceed this threshhold, then the shlib's symbols are not | |
186 | added. The threshold is ignored if the user explicitly asks for a | |
187 | shlib to be added, such as when using the "sharedlibrary" | |
188 | command. */ | |
189 | ||
190 | int auto_solib_limit; | |
c906108c | 191 | \f |
c5aa993b | 192 | |
0fe19209 DC |
193 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
194 | for the comparison. */ | |
c906108c SS |
195 | |
196 | static int | |
0cd64fe2 | 197 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 198 | { |
0fe19209 DC |
199 | struct partial_symbol *const *s1 = s1p; |
200 | struct partial_symbol *const *s2 = s2p; | |
201 | ||
4725b721 PH |
202 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
203 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
204 | } |
205 | ||
206 | void | |
fba45db2 | 207 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
208 | { |
209 | /* Sort the global list; don't sort the static list */ | |
210 | ||
c5aa993b JM |
211 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
212 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
213 | compare_psymbols); |
214 | } | |
215 | ||
c906108c SS |
216 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
217 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
218 | Note that the string at PTR does not have to be null terminated, I.E. it | |
219 | may be part of a larger string and we are only saving a substring. */ | |
220 | ||
221 | char * | |
63ca651f | 222 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 223 | { |
52f0bd74 | 224 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
225 | /* Open-coded memcpy--saves function call time. These strings are usually |
226 | short. FIXME: Is this really still true with a compiler that can | |
227 | inline memcpy? */ | |
228 | { | |
aa1ee363 AC |
229 | const char *p1 = ptr; |
230 | char *p2 = p; | |
63ca651f | 231 | const char *end = ptr + size; |
c906108c SS |
232 | while (p1 != end) |
233 | *p2++ = *p1++; | |
234 | } | |
235 | p[size] = 0; | |
236 | return p; | |
237 | } | |
238 | ||
239 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
240 | in the obstack pointed to by OBSTACKP. */ | |
241 | ||
242 | char * | |
fba45db2 KB |
243 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
244 | const char *s3) | |
c906108c | 245 | { |
52f0bd74 AC |
246 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
247 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
248 | strcpy (val, s1); |
249 | strcat (val, s2); | |
250 | strcat (val, s3); | |
251 | return val; | |
252 | } | |
253 | ||
254 | /* True if we are nested inside psymtab_to_symtab. */ | |
255 | ||
256 | int currently_reading_symtab = 0; | |
257 | ||
258 | static void | |
fba45db2 | 259 | decrement_reading_symtab (void *dummy) |
c906108c SS |
260 | { |
261 | currently_reading_symtab--; | |
262 | } | |
263 | ||
264 | /* Get the symbol table that corresponds to a partial_symtab. | |
265 | This is fast after the first time you do it. In fact, there | |
266 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
267 | case inline. */ | |
268 | ||
269 | struct symtab * | |
aa1ee363 | 270 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
271 | { |
272 | /* If it's been looked up before, return it. */ | |
273 | if (pst->symtab) | |
274 | return pst->symtab; | |
275 | ||
276 | /* If it has not yet been read in, read it. */ | |
277 | if (!pst->readin) | |
c5aa993b | 278 | { |
c906108c SS |
279 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
280 | currently_reading_symtab++; | |
281 | (*pst->read_symtab) (pst); | |
282 | do_cleanups (back_to); | |
283 | } | |
284 | ||
285 | return pst->symtab; | |
286 | } | |
287 | ||
5417f6dc RM |
288 | /* Remember the lowest-addressed loadable section we've seen. |
289 | This function is called via bfd_map_over_sections. | |
c906108c SS |
290 | |
291 | In case of equal vmas, the section with the largest size becomes the | |
292 | lowest-addressed loadable section. | |
293 | ||
294 | If the vmas and sizes are equal, the last section is considered the | |
295 | lowest-addressed loadable section. */ | |
296 | ||
297 | void | |
4efb68b1 | 298 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 299 | { |
c5aa993b | 300 | asection **lowest = (asection **) obj; |
c906108c SS |
301 | |
302 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
303 | return; | |
304 | if (!*lowest) | |
305 | *lowest = sect; /* First loadable section */ | |
306 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
307 | *lowest = sect; /* A lower loadable section */ | |
308 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
309 | && (bfd_section_size (abfd, (*lowest)) | |
310 | <= bfd_section_size (abfd, sect))) | |
311 | *lowest = sect; | |
312 | } | |
313 | ||
a39a16c4 MM |
314 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
315 | ||
316 | struct section_addr_info * | |
317 | alloc_section_addr_info (size_t num_sections) | |
318 | { | |
319 | struct section_addr_info *sap; | |
320 | size_t size; | |
321 | ||
322 | size = (sizeof (struct section_addr_info) | |
323 | + sizeof (struct other_sections) * (num_sections - 1)); | |
324 | sap = (struct section_addr_info *) xmalloc (size); | |
325 | memset (sap, 0, size); | |
326 | sap->num_sections = num_sections; | |
327 | ||
328 | return sap; | |
329 | } | |
62557bbc | 330 | |
7b90c3f9 JB |
331 | |
332 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
333 | any, are also freshly allocated copies of those in ADDRS. */ | |
334 | struct section_addr_info * | |
335 | copy_section_addr_info (struct section_addr_info *addrs) | |
336 | { | |
337 | struct section_addr_info *copy | |
338 | = alloc_section_addr_info (addrs->num_sections); | |
339 | int i; | |
340 | ||
341 | copy->num_sections = addrs->num_sections; | |
342 | for (i = 0; i < addrs->num_sections; i++) | |
343 | { | |
344 | copy->other[i].addr = addrs->other[i].addr; | |
345 | if (addrs->other[i].name) | |
346 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
347 | else | |
348 | copy->other[i].name = NULL; | |
349 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
350 | } | |
351 | ||
352 | return copy; | |
353 | } | |
354 | ||
355 | ||
356 | ||
62557bbc KB |
357 | /* Build (allocate and populate) a section_addr_info struct from |
358 | an existing section table. */ | |
359 | ||
360 | extern struct section_addr_info * | |
0542c86d PA |
361 | build_section_addr_info_from_section_table (const struct target_section *start, |
362 | const struct target_section *end) | |
62557bbc KB |
363 | { |
364 | struct section_addr_info *sap; | |
0542c86d | 365 | const struct target_section *stp; |
62557bbc KB |
366 | int oidx; |
367 | ||
a39a16c4 | 368 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
369 | |
370 | for (stp = start, oidx = 0; stp != end; stp++) | |
371 | { | |
5417f6dc | 372 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 373 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 374 | && oidx < end - start) |
62557bbc KB |
375 | { |
376 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 377 | sap->other[oidx].name |
fbd35540 | 378 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
379 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
380 | oidx++; | |
381 | } | |
382 | } | |
383 | ||
384 | return sap; | |
385 | } | |
386 | ||
089b4803 TG |
387 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
388 | ||
389 | static struct section_addr_info * | |
390 | build_section_addr_info_from_objfile (const struct objfile *objfile) | |
391 | { | |
392 | struct section_addr_info *sap; | |
393 | int i; | |
394 | struct bfd_section *sec; | |
395 | ||
396 | sap = alloc_section_addr_info (objfile->num_sections); | |
397 | for (i = 0, sec = objfile->obfd->sections; | |
398 | i < objfile->num_sections; | |
399 | i++, sec = sec->next) | |
400 | { | |
401 | gdb_assert (sec != NULL); | |
402 | sap->other[i].addr = (bfd_get_section_vma (objfile->obfd, sec) | |
403 | + objfile->section_offsets->offsets[i]); | |
404 | sap->other[i].name = xstrdup (bfd_get_section_name (objfile->obfd, sec)); | |
405 | sap->other[i].sectindex = sec->index; | |
406 | } | |
407 | return sap; | |
408 | } | |
409 | ||
62557bbc KB |
410 | |
411 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
412 | ||
413 | extern void | |
414 | free_section_addr_info (struct section_addr_info *sap) | |
415 | { | |
416 | int idx; | |
417 | ||
a39a16c4 | 418 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 419 | if (sap->other[idx].name) |
b8c9b27d KB |
420 | xfree (sap->other[idx].name); |
421 | xfree (sap); | |
62557bbc KB |
422 | } |
423 | ||
424 | ||
e8289572 JB |
425 | /* Initialize OBJFILE's sect_index_* members. */ |
426 | static void | |
427 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 428 | { |
e8289572 | 429 | asection *sect; |
c906108c | 430 | int i; |
5417f6dc | 431 | |
b8fbeb18 | 432 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 433 | if (sect) |
b8fbeb18 EZ |
434 | objfile->sect_index_text = sect->index; |
435 | ||
436 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 437 | if (sect) |
b8fbeb18 EZ |
438 | objfile->sect_index_data = sect->index; |
439 | ||
440 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 441 | if (sect) |
b8fbeb18 EZ |
442 | objfile->sect_index_bss = sect->index; |
443 | ||
444 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 445 | if (sect) |
b8fbeb18 EZ |
446 | objfile->sect_index_rodata = sect->index; |
447 | ||
bbcd32ad FF |
448 | /* This is where things get really weird... We MUST have valid |
449 | indices for the various sect_index_* members or gdb will abort. | |
450 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
451 | accomodate that. First, check for a file with the standard |
452 | one or two segments. */ | |
453 | ||
454 | symfile_find_segment_sections (objfile); | |
455 | ||
456 | /* Except when explicitly adding symbol files at some address, | |
457 | section_offsets contains nothing but zeros, so it doesn't matter | |
458 | which slot in section_offsets the individual sect_index_* members | |
459 | index into. So if they are all zero, it is safe to just point | |
460 | all the currently uninitialized indices to the first slot. But | |
461 | beware: if this is the main executable, it may be relocated | |
462 | later, e.g. by the remote qOffsets packet, and then this will | |
463 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
464 | |
465 | for (i = 0; i < objfile->num_sections; i++) | |
466 | { | |
467 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
468 | { | |
469 | break; | |
470 | } | |
471 | } | |
472 | if (i == objfile->num_sections) | |
473 | { | |
474 | if (objfile->sect_index_text == -1) | |
475 | objfile->sect_index_text = 0; | |
476 | if (objfile->sect_index_data == -1) | |
477 | objfile->sect_index_data = 0; | |
478 | if (objfile->sect_index_bss == -1) | |
479 | objfile->sect_index_bss = 0; | |
480 | if (objfile->sect_index_rodata == -1) | |
481 | objfile->sect_index_rodata = 0; | |
482 | } | |
b8fbeb18 | 483 | } |
c906108c | 484 | |
c1bd25fd DJ |
485 | /* The arguments to place_section. */ |
486 | ||
487 | struct place_section_arg | |
488 | { | |
489 | struct section_offsets *offsets; | |
490 | CORE_ADDR lowest; | |
491 | }; | |
492 | ||
493 | /* Find a unique offset to use for loadable section SECT if | |
494 | the user did not provide an offset. */ | |
495 | ||
2c0b251b | 496 | static void |
c1bd25fd DJ |
497 | place_section (bfd *abfd, asection *sect, void *obj) |
498 | { | |
499 | struct place_section_arg *arg = obj; | |
500 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
501 | int done; | |
3bd72c6f | 502 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 503 | |
2711e456 DJ |
504 | /* We are only interested in allocated sections. */ |
505 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
506 | return; |
507 | ||
508 | /* If the user specified an offset, honor it. */ | |
509 | if (offsets[sect->index] != 0) | |
510 | return; | |
511 | ||
512 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
513 | start_addr = (arg->lowest + align - 1) & -align; |
514 | ||
c1bd25fd DJ |
515 | do { |
516 | asection *cur_sec; | |
c1bd25fd | 517 | |
c1bd25fd DJ |
518 | done = 1; |
519 | ||
520 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
521 | { | |
522 | int indx = cur_sec->index; | |
523 | CORE_ADDR cur_offset; | |
524 | ||
525 | /* We don't need to compare against ourself. */ | |
526 | if (cur_sec == sect) | |
527 | continue; | |
528 | ||
2711e456 DJ |
529 | /* We can only conflict with allocated sections. */ |
530 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
531 | continue; |
532 | ||
533 | /* If the section offset is 0, either the section has not been placed | |
534 | yet, or it was the lowest section placed (in which case LOWEST | |
535 | will be past its end). */ | |
536 | if (offsets[indx] == 0) | |
537 | continue; | |
538 | ||
539 | /* If this section would overlap us, then we must move up. */ | |
540 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
541 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
542 | { | |
543 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
544 | start_addr = (start_addr + align - 1) & -align; | |
545 | done = 0; | |
3bd72c6f | 546 | break; |
c1bd25fd DJ |
547 | } |
548 | ||
549 | /* Otherwise, we appear to be OK. So far. */ | |
550 | } | |
551 | } | |
552 | while (!done); | |
553 | ||
554 | offsets[sect->index] = start_addr; | |
555 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 556 | } |
e8289572 JB |
557 | |
558 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 559 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
560 | version of the sym_fns.sym_offsets function for symbol readers that |
561 | don't need to do anything special. It allocates a section_offsets table | |
562 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
563 | ||
564 | void | |
565 | default_symfile_offsets (struct objfile *objfile, | |
566 | struct section_addr_info *addrs) | |
567 | { | |
568 | int i; | |
569 | ||
a39a16c4 | 570 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 571 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 572 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 573 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 574 | memset (objfile->section_offsets, 0, |
a39a16c4 | 575 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
576 | |
577 | /* Now calculate offsets for section that were specified by the | |
578 | caller. */ | |
a39a16c4 | 579 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
580 | { |
581 | struct other_sections *osp ; | |
582 | ||
583 | osp = &addrs->other[i] ; | |
584 | if (osp->addr == 0) | |
585 | continue; | |
586 | ||
587 | /* Record all sections in offsets */ | |
588 | /* The section_offsets in the objfile are here filled in using | |
589 | the BFD index. */ | |
590 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
591 | } | |
592 | ||
c1bd25fd DJ |
593 | /* For relocatable files, all loadable sections will start at zero. |
594 | The zero is meaningless, so try to pick arbitrary addresses such | |
595 | that no loadable sections overlap. This algorithm is quadratic, | |
596 | but the number of sections in a single object file is generally | |
597 | small. */ | |
598 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
599 | { | |
600 | struct place_section_arg arg; | |
2711e456 DJ |
601 | bfd *abfd = objfile->obfd; |
602 | asection *cur_sec; | |
603 | CORE_ADDR lowest = 0; | |
604 | ||
605 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
606 | /* We do not expect this to happen; just skip this step if the | |
607 | relocatable file has a section with an assigned VMA. */ | |
608 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
609 | break; | |
610 | ||
611 | if (cur_sec == NULL) | |
612 | { | |
613 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
614 | ||
615 | /* Pick non-overlapping offsets for sections the user did not | |
616 | place explicitly. */ | |
617 | arg.offsets = objfile->section_offsets; | |
618 | arg.lowest = 0; | |
619 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
620 | ||
621 | /* Correctly filling in the section offsets is not quite | |
622 | enough. Relocatable files have two properties that | |
623 | (most) shared objects do not: | |
624 | ||
625 | - Their debug information will contain relocations. Some | |
626 | shared libraries do also, but many do not, so this can not | |
627 | be assumed. | |
628 | ||
629 | - If there are multiple code sections they will be loaded | |
630 | at different relative addresses in memory than they are | |
631 | in the objfile, since all sections in the file will start | |
632 | at address zero. | |
633 | ||
634 | Because GDB has very limited ability to map from an | |
635 | address in debug info to the correct code section, | |
636 | it relies on adding SECT_OFF_TEXT to things which might be | |
637 | code. If we clear all the section offsets, and set the | |
638 | section VMAs instead, then symfile_relocate_debug_section | |
639 | will return meaningful debug information pointing at the | |
640 | correct sections. | |
641 | ||
642 | GDB has too many different data structures for section | |
643 | addresses - a bfd, objfile, and so_list all have section | |
644 | tables, as does exec_ops. Some of these could probably | |
645 | be eliminated. */ | |
646 | ||
647 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
648 | cur_sec = cur_sec->next) | |
649 | { | |
650 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
651 | continue; | |
652 | ||
653 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
30510692 DJ |
654 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
655 | offsets[cur_sec->index]); | |
2711e456 DJ |
656 | offsets[cur_sec->index] = 0; |
657 | } | |
658 | } | |
c1bd25fd DJ |
659 | } |
660 | ||
e8289572 JB |
661 | /* Remember the bfd indexes for the .text, .data, .bss and |
662 | .rodata sections. */ | |
663 | init_objfile_sect_indices (objfile); | |
664 | } | |
665 | ||
666 | ||
31d99776 DJ |
667 | /* Divide the file into segments, which are individual relocatable units. |
668 | This is the default version of the sym_fns.sym_segments function for | |
669 | symbol readers that do not have an explicit representation of segments. | |
670 | It assumes that object files do not have segments, and fully linked | |
671 | files have a single segment. */ | |
672 | ||
673 | struct symfile_segment_data * | |
674 | default_symfile_segments (bfd *abfd) | |
675 | { | |
676 | int num_sections, i; | |
677 | asection *sect; | |
678 | struct symfile_segment_data *data; | |
679 | CORE_ADDR low, high; | |
680 | ||
681 | /* Relocatable files contain enough information to position each | |
682 | loadable section independently; they should not be relocated | |
683 | in segments. */ | |
684 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
685 | return NULL; | |
686 | ||
687 | /* Make sure there is at least one loadable section in the file. */ | |
688 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
689 | { | |
690 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
691 | continue; | |
692 | ||
693 | break; | |
694 | } | |
695 | if (sect == NULL) | |
696 | return NULL; | |
697 | ||
698 | low = bfd_get_section_vma (abfd, sect); | |
699 | high = low + bfd_get_section_size (sect); | |
700 | ||
701 | data = XZALLOC (struct symfile_segment_data); | |
702 | data->num_segments = 1; | |
703 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
704 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
705 | ||
706 | num_sections = bfd_count_sections (abfd); | |
707 | data->segment_info = XCALLOC (num_sections, int); | |
708 | ||
709 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
710 | { | |
711 | CORE_ADDR vma; | |
712 | ||
713 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
714 | continue; | |
715 | ||
716 | vma = bfd_get_section_vma (abfd, sect); | |
717 | if (vma < low) | |
718 | low = vma; | |
719 | if (vma + bfd_get_section_size (sect) > high) | |
720 | high = vma + bfd_get_section_size (sect); | |
721 | ||
722 | data->segment_info[i] = 1; | |
723 | } | |
724 | ||
725 | data->segment_bases[0] = low; | |
726 | data->segment_sizes[0] = high - low; | |
727 | ||
728 | return data; | |
729 | } | |
730 | ||
c906108c SS |
731 | /* Process a symbol file, as either the main file or as a dynamically |
732 | loaded file. | |
733 | ||
96baa820 JM |
734 | OBJFILE is where the symbols are to be read from. |
735 | ||
7e8580c1 JB |
736 | ADDRS is the list of section load addresses. If the user has given |
737 | an 'add-symbol-file' command, then this is the list of offsets and | |
738 | addresses he or she provided as arguments to the command; or, if | |
739 | we're handling a shared library, these are the actual addresses the | |
740 | sections are loaded at, according to the inferior's dynamic linker | |
741 | (as gleaned by GDB's shared library code). We convert each address | |
742 | into an offset from the section VMA's as it appears in the object | |
743 | file, and then call the file's sym_offsets function to convert this | |
744 | into a format-specific offset table --- a `struct section_offsets'. | |
745 | If ADDRS is non-zero, OFFSETS must be zero. | |
746 | ||
747 | OFFSETS is a table of section offsets already in the right | |
748 | format-specific representation. NUM_OFFSETS is the number of | |
749 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
750 | assume this is the proper table the call to sym_offsets described | |
751 | above would produce. Instead of calling sym_offsets, we just dump | |
752 | it right into objfile->section_offsets. (When we're re-reading | |
753 | symbols from an objfile, we don't have the original load address | |
754 | list any more; all we have is the section offset table.) If | |
755 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 756 | |
7eedccfa PP |
757 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
758 | an extra symbol file such as dynamically loaded code, and wether | |
759 | breakpoint reset should be deferred. */ | |
c906108c SS |
760 | |
761 | void | |
7e8580c1 JB |
762 | syms_from_objfile (struct objfile *objfile, |
763 | struct section_addr_info *addrs, | |
764 | struct section_offsets *offsets, | |
765 | int num_offsets, | |
7eedccfa | 766 | int add_flags) |
c906108c | 767 | { |
a39a16c4 | 768 | struct section_addr_info *local_addr = NULL; |
c906108c | 769 | struct cleanup *old_chain; |
7eedccfa | 770 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 771 | |
7e8580c1 | 772 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 773 | |
c906108c | 774 | init_entry_point_info (objfile); |
31d99776 | 775 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 776 | |
75245b24 MS |
777 | if (objfile->sf == NULL) |
778 | return; /* No symbols. */ | |
779 | ||
c906108c SS |
780 | /* Make sure that partially constructed symbol tables will be cleaned up |
781 | if an error occurs during symbol reading. */ | |
74b7792f | 782 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 783 | |
a39a16c4 MM |
784 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
785 | list. We now establish the convention that an addr of zero means | |
786 | no load address was specified. */ | |
787 | if (! addrs && ! offsets) | |
788 | { | |
5417f6dc | 789 | local_addr |
a39a16c4 MM |
790 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
791 | make_cleanup (xfree, local_addr); | |
792 | addrs = local_addr; | |
793 | } | |
794 | ||
795 | /* Now either addrs or offsets is non-zero. */ | |
796 | ||
c5aa993b | 797 | if (mainline) |
c906108c SS |
798 | { |
799 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 800 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 801 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
802 | |
803 | /* Since no error yet, throw away the old symbol table. */ | |
804 | ||
805 | if (symfile_objfile != NULL) | |
806 | { | |
807 | free_objfile (symfile_objfile); | |
adb7f338 | 808 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
809 | } |
810 | ||
811 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
812 | If the user wants to get rid of them, they should do "symbol-file" |
813 | without arguments first. Not sure this is the best behavior | |
814 | (PR 2207). */ | |
c906108c | 815 | |
c5aa993b | 816 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
817 | } |
818 | ||
819 | /* Convert addr into an offset rather than an absolute address. | |
820 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 821 | and assume that <addr> is where that got loaded. |
c906108c | 822 | |
53a5351d JM |
823 | We no longer warn if the lowest section is not a text segment (as |
824 | happens for the PA64 port. */ | |
0d15807d | 825 | if (addrs && addrs->other[0].name) |
c906108c | 826 | { |
1549f619 EZ |
827 | asection *lower_sect; |
828 | asection *sect; | |
829 | CORE_ADDR lower_offset; | |
830 | int i; | |
831 | ||
5417f6dc | 832 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
833 | continguous sections. FIXME!! won't work without call to find |
834 | .text first, but this assumes text is lowest section. */ | |
835 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
836 | if (lower_sect == NULL) | |
c906108c | 837 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 838 | &lower_sect); |
2acceee2 | 839 | if (lower_sect == NULL) |
ff8e85c3 PA |
840 | { |
841 | warning (_("no loadable sections found in added symbol-file %s"), | |
842 | objfile->name); | |
843 | lower_offset = 0; | |
844 | } | |
2acceee2 | 845 | else |
ff8e85c3 | 846 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); |
5417f6dc | 847 | |
13de58df | 848 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
849 | FIXME! Sections must be in order of increasing loadable section |
850 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 851 | |
13de58df JB |
852 | Adjust offsets if the segments are not contiguous. |
853 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
854 | the offset of the highest loadable section lower than it |
855 | (the loadable section directly below it in memory). | |
856 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
857 | ||
1549f619 | 858 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
859 | { |
860 | if (addrs->other[i].addr != 0) | |
861 | { | |
862 | sect = bfd_get_section_by_name (objfile->obfd, | |
863 | addrs->other[i].name); | |
864 | if (sect) | |
865 | { | |
866 | addrs->other[i].addr | |
867 | -= bfd_section_vma (objfile->obfd, sect); | |
868 | lower_offset = addrs->other[i].addr; | |
869 | /* This is the index used by BFD. */ | |
870 | addrs->other[i].sectindex = sect->index ; | |
871 | } | |
872 | else | |
873 | { | |
8a3fe4f8 | 874 | warning (_("section %s not found in %s"), |
5417f6dc | 875 | addrs->other[i].name, |
7e8580c1 JB |
876 | objfile->name); |
877 | addrs->other[i].addr = 0; | |
878 | } | |
879 | } | |
880 | else | |
881 | addrs->other[i].addr = lower_offset; | |
882 | } | |
c906108c SS |
883 | } |
884 | ||
885 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
886 | appear for this new file, and record how verbose to be, then do the | |
887 | initial symbol reading for this file. */ | |
888 | ||
c5aa993b | 889 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 890 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 891 | |
7e8580c1 JB |
892 | if (addrs) |
893 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
894 | else | |
895 | { | |
896 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
897 | ||
898 | /* Just copy in the offset table directly as given to us. */ | |
899 | objfile->num_sections = num_offsets; | |
900 | objfile->section_offsets | |
901 | = ((struct section_offsets *) | |
8b92e4d5 | 902 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
903 | memcpy (objfile->section_offsets, offsets, size); |
904 | ||
905 | init_objfile_sect_indices (objfile); | |
906 | } | |
c906108c | 907 | |
f4352531 | 908 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 909 | |
c906108c SS |
910 | /* Discard cleanups as symbol reading was successful. */ |
911 | ||
912 | discard_cleanups (old_chain); | |
f7545552 | 913 | xfree (local_addr); |
c906108c SS |
914 | } |
915 | ||
916 | /* Perform required actions after either reading in the initial | |
917 | symbols for a new objfile, or mapping in the symbols from a reusable | |
918 | objfile. */ | |
c5aa993b | 919 | |
c906108c | 920 | void |
7eedccfa | 921 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c SS |
922 | { |
923 | ||
924 | /* If this is the main symbol file we have to clean up all users of the | |
925 | old main symbol file. Otherwise it is sufficient to fixup all the | |
926 | breakpoints that may have been redefined by this symbol file. */ | |
7eedccfa | 927 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
928 | { |
929 | /* OK, make it the "real" symbol file. */ | |
930 | symfile_objfile = objfile; | |
931 | ||
932 | clear_symtab_users (); | |
933 | } | |
7eedccfa | 934 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 935 | { |
69de3c6a | 936 | breakpoint_re_set (); |
c906108c SS |
937 | } |
938 | ||
939 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 940 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
941 | } |
942 | ||
943 | /* Process a symbol file, as either the main file or as a dynamically | |
944 | loaded file. | |
945 | ||
5417f6dc RM |
946 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
947 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 948 | |
7eedccfa PP |
949 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
950 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
951 | |
952 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
953 | syms_from_objfile, above. |
954 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 955 | |
c906108c SS |
956 | Upon success, returns a pointer to the objfile that was added. |
957 | Upon failure, jumps back to command level (never returns). */ | |
7eedccfa | 958 | |
7904e09f | 959 | static struct objfile * |
7eedccfa PP |
960 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
961 | int add_flags, | |
7904e09f JB |
962 | struct section_addr_info *addrs, |
963 | struct section_offsets *offsets, | |
964 | int num_offsets, | |
7eedccfa | 965 | int flags) |
c906108c SS |
966 | { |
967 | struct objfile *objfile; | |
968 | struct partial_symtab *psymtab; | |
a39a16c4 | 969 | struct cleanup *my_cleanups; |
5417f6dc | 970 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 971 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
c906108c | 972 | |
5417f6dc | 973 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 974 | |
5417f6dc RM |
975 | /* Give user a chance to burp if we'd be |
976 | interactively wiping out any existing symbols. */ | |
c906108c SS |
977 | |
978 | if ((have_full_symbols () || have_partial_symbols ()) | |
7eedccfa | 979 | && (add_flags & SYMFILE_MAINLINE) |
c906108c | 980 | && from_tty |
9e2f0ad4 | 981 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 982 | error (_("Not confirmed.")); |
c906108c | 983 | |
2df3850c | 984 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 985 | discard_cleanups (my_cleanups); |
c906108c | 986 | |
78a4a9b9 AC |
987 | /* We either created a new mapped symbol table, mapped an existing |
988 | symbol table file which has not had initial symbol reading | |
989 | performed, or need to read an unmapped symbol table. */ | |
990 | if (from_tty || info_verbose) | |
c906108c | 991 | { |
769d7dc4 AC |
992 | if (deprecated_pre_add_symbol_hook) |
993 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 994 | else |
c906108c | 995 | { |
55333a84 DE |
996 | printf_unfiltered (_("Reading symbols from %s..."), name); |
997 | wrap_here (""); | |
998 | gdb_flush (gdb_stdout); | |
c906108c | 999 | } |
c906108c | 1000 | } |
78a4a9b9 | 1001 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 1002 | add_flags); |
c906108c SS |
1003 | |
1004 | /* We now have at least a partial symbol table. Check to see if the | |
1005 | user requested that all symbols be read on initial access via either | |
1006 | the gdb startup command line or on a per symbol file basis. Expand | |
1007 | all partial symbol tables for this objfile if so. */ | |
1008 | ||
2acceee2 | 1009 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 1010 | { |
55333a84 | 1011 | if (from_tty || info_verbose) |
c906108c | 1012 | { |
a3f17187 | 1013 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1014 | wrap_here (""); |
1015 | gdb_flush (gdb_stdout); | |
1016 | } | |
1017 | ||
c5aa993b | 1018 | for (psymtab = objfile->psymtabs; |
c906108c | 1019 | psymtab != NULL; |
c5aa993b | 1020 | psymtab = psymtab->next) |
c906108c SS |
1021 | { |
1022 | psymtab_to_symtab (psymtab); | |
1023 | } | |
1024 | } | |
1025 | ||
55333a84 | 1026 | if ((from_tty || info_verbose) |
e361b228 | 1027 | && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1028 | { |
1029 | wrap_here (""); | |
55333a84 | 1030 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1031 | wrap_here (""); |
1032 | } | |
1033 | ||
c906108c SS |
1034 | if (from_tty || info_verbose) |
1035 | { | |
769d7dc4 AC |
1036 | if (deprecated_post_add_symbol_hook) |
1037 | deprecated_post_add_symbol_hook (); | |
c906108c | 1038 | else |
55333a84 | 1039 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1040 | } |
1041 | ||
481d0f41 JB |
1042 | /* We print some messages regardless of whether 'from_tty || |
1043 | info_verbose' is true, so make sure they go out at the right | |
1044 | time. */ | |
1045 | gdb_flush (gdb_stdout); | |
1046 | ||
a39a16c4 MM |
1047 | do_cleanups (my_cleanups); |
1048 | ||
109f874e | 1049 | if (objfile->sf == NULL) |
8caee43b PP |
1050 | { |
1051 | observer_notify_new_objfile (objfile); | |
1052 | return objfile; /* No symbols. */ | |
1053 | } | |
109f874e | 1054 | |
7eedccfa | 1055 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1056 | |
06d3b283 | 1057 | observer_notify_new_objfile (objfile); |
c906108c | 1058 | |
ce7d4522 | 1059 | bfd_cache_close_all (); |
c906108c SS |
1060 | return (objfile); |
1061 | } | |
1062 | ||
9cce227f TG |
1063 | /* Add BFD as a separate debug file for OBJFILE. */ |
1064 | ||
1065 | void | |
1066 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1067 | { | |
15d123c9 | 1068 | struct objfile *new_objfile; |
089b4803 TG |
1069 | struct section_addr_info *sap; |
1070 | struct cleanup *my_cleanup; | |
1071 | ||
1072 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1073 | because sections of BFD may not match sections of OBJFILE and because | |
1074 | vma may have been modified by tools such as prelink. */ | |
1075 | sap = build_section_addr_info_from_objfile (objfile); | |
1076 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1077 | |
15d123c9 | 1078 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1079 | (bfd, symfile_flags, |
089b4803 | 1080 | sap, NULL, 0, |
9cce227f TG |
1081 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
1082 | | OBJF_USERLOADED)); | |
089b4803 TG |
1083 | |
1084 | do_cleanups (my_cleanup); | |
9cce227f | 1085 | |
15d123c9 | 1086 | add_separate_debug_objfile (new_objfile, objfile); |
9cce227f | 1087 | } |
7904e09f | 1088 | |
eb4556d7 JB |
1089 | /* Process the symbol file ABFD, as either the main file or as a |
1090 | dynamically loaded file. | |
1091 | ||
1092 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1093 | details. */ | |
1094 | struct objfile * | |
7eedccfa | 1095 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1096 | struct section_addr_info *addrs, |
7eedccfa | 1097 | int flags) |
eb4556d7 | 1098 | { |
7eedccfa PP |
1099 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
1100 | flags); | |
eb4556d7 JB |
1101 | } |
1102 | ||
1103 | ||
7904e09f JB |
1104 | /* Process a symbol file, as either the main file or as a dynamically |
1105 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1106 | for details. */ | |
1107 | struct objfile * | |
7eedccfa PP |
1108 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1109 | int flags) | |
7904e09f | 1110 | { |
7eedccfa PP |
1111 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
1112 | flags); | |
7904e09f JB |
1113 | } |
1114 | ||
1115 | ||
d7db6da9 FN |
1116 | /* Call symbol_file_add() with default values and update whatever is |
1117 | affected by the loading of a new main(). | |
1118 | Used when the file is supplied in the gdb command line | |
1119 | and by some targets with special loading requirements. | |
1120 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1121 | argument for the switches that can only be specified in the symbol_file | |
1122 | command itself. */ | |
5417f6dc | 1123 | |
1adeb98a FN |
1124 | void |
1125 | symbol_file_add_main (char *args, int from_tty) | |
1126 | { | |
d7db6da9 FN |
1127 | symbol_file_add_main_1 (args, from_tty, 0); |
1128 | } | |
1129 | ||
1130 | static void | |
1131 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1132 | { | |
7eedccfa PP |
1133 | const int add_flags = SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0); |
1134 | symbol_file_add (args, add_flags, NULL, flags); | |
d7db6da9 | 1135 | |
d7db6da9 FN |
1136 | /* Getting new symbols may change our opinion about |
1137 | what is frameless. */ | |
1138 | reinit_frame_cache (); | |
1139 | ||
1140 | set_initial_language (); | |
1adeb98a FN |
1141 | } |
1142 | ||
1143 | void | |
1144 | symbol_file_clear (int from_tty) | |
1145 | { | |
1146 | if ((have_full_symbols () || have_partial_symbols ()) | |
1147 | && from_tty | |
0430b0d6 AS |
1148 | && (symfile_objfile |
1149 | ? !query (_("Discard symbol table from `%s'? "), | |
1150 | symfile_objfile->name) | |
1151 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1152 | error (_("Not confirmed.")); |
1adeb98a | 1153 | |
d10c338d | 1154 | free_all_objfiles (); |
1adeb98a | 1155 | |
d10c338d DE |
1156 | /* solib descriptors may have handles to objfiles. Since their |
1157 | storage has just been released, we'd better wipe the solib | |
1158 | descriptors as well. */ | |
1159 | no_shared_libraries (NULL, from_tty); | |
1160 | ||
adb7f338 | 1161 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1162 | if (from_tty) |
1163 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1164 | } |
1165 | ||
5b5d99cf JB |
1166 | static char * |
1167 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1168 | { | |
1169 | asection *sect; | |
1170 | bfd_size_type debuglink_size; | |
1171 | unsigned long crc32; | |
1172 | char *contents; | |
1173 | int crc_offset; | |
1174 | unsigned char *p; | |
5417f6dc | 1175 | |
5b5d99cf JB |
1176 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1177 | ||
1178 | if (sect == NULL) | |
1179 | return NULL; | |
1180 | ||
1181 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1182 | |
5b5d99cf JB |
1183 | contents = xmalloc (debuglink_size); |
1184 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1185 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1186 | ||
1187 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1188 | crc_offset = strlen (contents) + 1; | |
1189 | crc_offset = (crc_offset + 3) & ~3; | |
1190 | ||
1191 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1192 | |
5b5d99cf JB |
1193 | *crc32_out = crc32; |
1194 | return contents; | |
1195 | } | |
1196 | ||
1197 | static int | |
287ccc17 | 1198 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1199 | struct objfile *parent_objfile) |
5b5d99cf JB |
1200 | { |
1201 | unsigned long file_crc = 0; | |
f1838a98 | 1202 | bfd *abfd; |
777ea8f1 | 1203 | gdb_byte buffer[8*1024]; |
5b5d99cf | 1204 | int count; |
32a0e547 JK |
1205 | struct stat parent_stat, abfd_stat; |
1206 | ||
1207 | /* Find a separate debug info file as if symbols would be present in | |
1208 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1209 | section can contain just the basename of PARENT_OBJFILE without any | |
1210 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
1211 | the separate debug infos with the same basename can exist. */ | |
1212 | ||
1213 | if (strcmp (name, parent_objfile->name) == 0) | |
1214 | return 0; | |
5b5d99cf | 1215 | |
874f5765 | 1216 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1217 | |
1218 | if (!abfd) | |
5b5d99cf JB |
1219 | return 0; |
1220 | ||
32a0e547 JK |
1221 | /* Verify symlinks were not the cause of strcmp name difference above. |
1222 | ||
1223 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1224 | st_ino; they always set it to zero. (Windows does provide a | |
1225 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1226 | case. While there is no guarantee that a system that provides | |
1227 | meaningful inode numbers will never set st_ino to zero, this is | |
1228 | merely an optimization, so we do not need to worry about false | |
1229 | negatives. */ | |
1230 | ||
1231 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
1232 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0 | |
1233 | && abfd_stat.st_dev == parent_stat.st_dev | |
1234 | && abfd_stat.st_ino == parent_stat.st_ino | |
1235 | && abfd_stat.st_ino != 0) | |
1236 | { | |
1237 | bfd_close (abfd); | |
1238 | return 0; | |
1239 | } | |
1240 | ||
f1838a98 | 1241 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1242 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1243 | ||
f1838a98 | 1244 | bfd_close (abfd); |
5b5d99cf | 1245 | |
287ccc17 JK |
1246 | if (crc != file_crc) |
1247 | { | |
1248 | warning (_("the debug information found in \"%s\"" | |
1249 | " does not match \"%s\" (CRC mismatch).\n"), | |
32a0e547 | 1250 | name, parent_objfile->name); |
287ccc17 JK |
1251 | return 0; |
1252 | } | |
1253 | ||
1254 | return 1; | |
5b5d99cf JB |
1255 | } |
1256 | ||
aa28a74e | 1257 | char *debug_file_directory = NULL; |
920d2a44 AC |
1258 | static void |
1259 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1260 | struct cmd_list_element *c, const char *value) | |
1261 | { | |
1262 | fprintf_filtered (file, _("\ | |
1263 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1264 | value); | |
1265 | } | |
5b5d99cf JB |
1266 | |
1267 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1268 | #define DEBUG_SUBDIRECTORY ".debug" | |
1269 | #endif | |
1270 | ||
9cce227f TG |
1271 | char * |
1272 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1273 | { | |
1274 | asection *sect; | |
1275 | char *basename, *name_copy, *debugdir; | |
1276 | char *dir = NULL; | |
1277 | char *debugfile = NULL; | |
1278 | char *canon_name = NULL; | |
1279 | bfd_size_type debuglink_size; | |
1280 | unsigned long crc32; | |
1281 | int i; | |
5b5d99cf JB |
1282 | |
1283 | basename = get_debug_link_info (objfile, &crc32); | |
1284 | ||
1285 | if (basename == NULL) | |
287ccc17 JK |
1286 | /* There's no separate debug info, hence there's no way we could |
1287 | load it => no warning. */ | |
25522fae | 1288 | goto cleanup_return_debugfile; |
5417f6dc | 1289 | |
5b5d99cf JB |
1290 | dir = xstrdup (objfile->name); |
1291 | ||
fe36c4f4 JB |
1292 | /* Strip off the final filename part, leaving the directory name, |
1293 | followed by a slash. Objfile names should always be absolute and | |
1294 | tilde-expanded, so there should always be a slash in there | |
1295 | somewhere. */ | |
5b5d99cf JB |
1296 | for (i = strlen(dir) - 1; i >= 0; i--) |
1297 | { | |
1298 | if (IS_DIR_SEPARATOR (dir[i])) | |
1299 | break; | |
1300 | } | |
fe36c4f4 | 1301 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1302 | dir[i+1] = '\0'; |
5417f6dc | 1303 | |
1ffa32ee JK |
1304 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1305 | canon_name = lrealpath (dir); | |
1306 | i = strlen (dir); | |
1307 | if (canon_name && strlen (canon_name) > i) | |
1308 | i = strlen (canon_name); | |
1309 | ||
25522fae JK |
1310 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1311 | + i | |
1312 | + strlen (DEBUG_SUBDIRECTORY) | |
1313 | + strlen ("/") | |
1314 | + strlen (basename) | |
1315 | + 1); | |
5b5d99cf JB |
1316 | |
1317 | /* First try in the same directory as the original file. */ | |
1318 | strcpy (debugfile, dir); | |
1319 | strcat (debugfile, basename); | |
1320 | ||
32a0e547 | 1321 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1322 | goto cleanup_return_debugfile; |
5417f6dc | 1323 | |
5b5d99cf JB |
1324 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1325 | strcpy (debugfile, dir); | |
1326 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1327 | strcat (debugfile, "/"); | |
1328 | strcat (debugfile, basename); | |
1329 | ||
32a0e547 | 1330 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1331 | goto cleanup_return_debugfile; |
5417f6dc | 1332 | |
24ddea62 JK |
1333 | /* Then try in the global debugfile directories. |
1334 | ||
1335 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1336 | cause "/..." lookups. */ | |
5417f6dc | 1337 | |
24ddea62 JK |
1338 | debugdir = debug_file_directory; |
1339 | do | |
aa28a74e | 1340 | { |
24ddea62 JK |
1341 | char *debugdir_end; |
1342 | ||
1343 | while (*debugdir == DIRNAME_SEPARATOR) | |
1344 | debugdir++; | |
1345 | ||
1346 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1347 | if (debugdir_end == NULL) | |
1348 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1349 | ||
1350 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1351 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1352 | strcat (debugfile, "/"); |
24ddea62 | 1353 | strcat (debugfile, dir); |
aa28a74e DJ |
1354 | strcat (debugfile, basename); |
1355 | ||
32a0e547 | 1356 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1357 | goto cleanup_return_debugfile; |
24ddea62 JK |
1358 | |
1359 | /* If the file is in the sysroot, try using its base path in the | |
1360 | global debugfile directory. */ | |
1361 | if (canon_name | |
1362 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1363 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1364 | { | |
1365 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1366 | debugfile[debugdir_end - debugdir] = 0; | |
1367 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1368 | strcat (debugfile, "/"); | |
1369 | strcat (debugfile, basename); | |
1370 | ||
32a0e547 | 1371 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
24ddea62 JK |
1372 | goto cleanup_return_debugfile; |
1373 | } | |
1374 | ||
1375 | debugdir = debugdir_end; | |
aa28a74e | 1376 | } |
24ddea62 | 1377 | while (*debugdir != 0); |
aa28a74e | 1378 | |
25522fae JK |
1379 | xfree (debugfile); |
1380 | debugfile = NULL; | |
aa28a74e | 1381 | |
25522fae JK |
1382 | cleanup_return_debugfile: |
1383 | xfree (canon_name); | |
5b5d99cf JB |
1384 | xfree (basename); |
1385 | xfree (dir); | |
25522fae | 1386 | return debugfile; |
5b5d99cf JB |
1387 | } |
1388 | ||
1389 | ||
c906108c SS |
1390 | /* This is the symbol-file command. Read the file, analyze its |
1391 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1392 | the command is rather bizarre: |
1393 | ||
1394 | 1. The function buildargv implements various quoting conventions | |
1395 | which are undocumented and have little or nothing in common with | |
1396 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1397 | ||
1398 | 2. Options are used, which are not generally used in GDB (perhaps | |
1399 | "set mapped on", "set readnow on" would be better) | |
1400 | ||
1401 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1402 | conventions (because it is confusing and inconvenient). */ |
1403 | ||
1404 | void | |
fba45db2 | 1405 | symbol_file_command (char *args, int from_tty) |
c906108c | 1406 | { |
c906108c SS |
1407 | dont_repeat (); |
1408 | ||
1409 | if (args == NULL) | |
1410 | { | |
1adeb98a | 1411 | symbol_file_clear (from_tty); |
c906108c SS |
1412 | } |
1413 | else | |
1414 | { | |
d1a41061 | 1415 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1416 | int flags = OBJF_USERLOADED; |
1417 | struct cleanup *cleanups; | |
1418 | char *name = NULL; | |
1419 | ||
7a292a7a | 1420 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1421 | while (*argv != NULL) |
1422 | { | |
78a4a9b9 AC |
1423 | if (strcmp (*argv, "-readnow") == 0) |
1424 | flags |= OBJF_READNOW; | |
1425 | else if (**argv == '-') | |
8a3fe4f8 | 1426 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1427 | else |
1428 | { | |
cb2f3a29 | 1429 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1430 | name = *argv; |
78a4a9b9 | 1431 | } |
cb2f3a29 | 1432 | |
c906108c SS |
1433 | argv++; |
1434 | } | |
1435 | ||
1436 | if (name == NULL) | |
cb2f3a29 MK |
1437 | error (_("no symbol file name was specified")); |
1438 | ||
c906108c SS |
1439 | do_cleanups (cleanups); |
1440 | } | |
1441 | } | |
1442 | ||
1443 | /* Set the initial language. | |
1444 | ||
cb2f3a29 MK |
1445 | FIXME: A better solution would be to record the language in the |
1446 | psymtab when reading partial symbols, and then use it (if known) to | |
1447 | set the language. This would be a win for formats that encode the | |
1448 | language in an easily discoverable place, such as DWARF. For | |
1449 | stabs, we can jump through hoops looking for specially named | |
1450 | symbols or try to intuit the language from the specific type of | |
1451 | stabs we find, but we can't do that until later when we read in | |
1452 | full symbols. */ | |
c906108c | 1453 | |
8b60591b | 1454 | void |
fba45db2 | 1455 | set_initial_language (void) |
c906108c SS |
1456 | { |
1457 | struct partial_symtab *pst; | |
c5aa993b | 1458 | enum language lang = language_unknown; |
c906108c SS |
1459 | |
1460 | pst = find_main_psymtab (); | |
1461 | if (pst != NULL) | |
1462 | { | |
c5aa993b | 1463 | if (pst->filename != NULL) |
cb2f3a29 MK |
1464 | lang = deduce_language_from_filename (pst->filename); |
1465 | ||
c906108c SS |
1466 | if (lang == language_unknown) |
1467 | { | |
c5aa993b JM |
1468 | /* Make C the default language */ |
1469 | lang = language_c; | |
c906108c | 1470 | } |
cb2f3a29 | 1471 | |
c906108c | 1472 | set_language (lang); |
cb2f3a29 | 1473 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1474 | } |
1475 | } | |
1476 | ||
874f5765 TG |
1477 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1478 | open it normally. */ | |
1479 | ||
1480 | bfd * | |
1481 | bfd_open_maybe_remote (const char *name) | |
1482 | { | |
1483 | if (remote_filename_p (name)) | |
1484 | return remote_bfd_open (name, gnutarget); | |
1485 | else | |
1486 | return bfd_openr (name, gnutarget); | |
1487 | } | |
1488 | ||
1489 | ||
cb2f3a29 MK |
1490 | /* Open the file specified by NAME and hand it off to BFD for |
1491 | preliminary analysis. Return a newly initialized bfd *, which | |
1492 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1493 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1494 | |
1495 | bfd * | |
fba45db2 | 1496 | symfile_bfd_open (char *name) |
c906108c SS |
1497 | { |
1498 | bfd *sym_bfd; | |
1499 | int desc; | |
1500 | char *absolute_name; | |
1501 | ||
f1838a98 UW |
1502 | if (remote_filename_p (name)) |
1503 | { | |
1504 | name = xstrdup (name); | |
1505 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1506 | if (!sym_bfd) | |
1507 | { | |
1508 | make_cleanup (xfree, name); | |
1509 | error (_("`%s': can't open to read symbols: %s."), name, | |
1510 | bfd_errmsg (bfd_get_error ())); | |
1511 | } | |
1512 | ||
1513 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1514 | { | |
1515 | bfd_close (sym_bfd); | |
1516 | make_cleanup (xfree, name); | |
1517 | error (_("`%s': can't read symbols: %s."), name, | |
1518 | bfd_errmsg (bfd_get_error ())); | |
1519 | } | |
1520 | ||
1521 | return sym_bfd; | |
1522 | } | |
1523 | ||
cb2f3a29 | 1524 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1525 | |
1526 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1527 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1528 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1529 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1530 | if (desc < 0) |
1531 | { | |
1532 | char *exename = alloca (strlen (name) + 5); | |
1533 | strcat (strcpy (exename, name), ".exe"); | |
014d698b | 1534 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1535 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1536 | } |
1537 | #endif | |
1538 | if (desc < 0) | |
1539 | { | |
b8c9b27d | 1540 | make_cleanup (xfree, name); |
c906108c SS |
1541 | perror_with_name (name); |
1542 | } | |
cb2f3a29 MK |
1543 | |
1544 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1545 | bfd. It'll be freed in free_objfile(). */ | |
1546 | xfree (name); | |
1547 | name = absolute_name; | |
c906108c | 1548 | |
9f76c2cd | 1549 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1550 | if (!sym_bfd) |
1551 | { | |
1552 | close (desc); | |
b8c9b27d | 1553 | make_cleanup (xfree, name); |
f1838a98 | 1554 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1555 | bfd_errmsg (bfd_get_error ())); |
1556 | } | |
549c1eea | 1557 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1558 | |
1559 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1560 | { | |
cb2f3a29 MK |
1561 | /* FIXME: should be checking for errors from bfd_close (for one |
1562 | thing, on error it does not free all the storage associated | |
1563 | with the bfd). */ | |
1564 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1565 | make_cleanup (xfree, name); |
f1838a98 | 1566 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1567 | bfd_errmsg (bfd_get_error ())); |
1568 | } | |
cb2f3a29 | 1569 | |
4f6f9936 JK |
1570 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1571 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1572 | ||
cb2f3a29 | 1573 | return sym_bfd; |
c906108c SS |
1574 | } |
1575 | ||
cb2f3a29 MK |
1576 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1577 | the section was not found. */ | |
1578 | ||
0e931cf0 JB |
1579 | int |
1580 | get_section_index (struct objfile *objfile, char *section_name) | |
1581 | { | |
1582 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1583 | |
0e931cf0 JB |
1584 | if (sect) |
1585 | return sect->index; | |
1586 | else | |
1587 | return -1; | |
1588 | } | |
1589 | ||
cb2f3a29 MK |
1590 | /* Link SF into the global symtab_fns list. Called on startup by the |
1591 | _initialize routine in each object file format reader, to register | |
1592 | information about each format the the reader is prepared to | |
1593 | handle. */ | |
c906108c SS |
1594 | |
1595 | void | |
fba45db2 | 1596 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1597 | { |
1598 | sf->next = symtab_fns; | |
1599 | symtab_fns = sf; | |
1600 | } | |
1601 | ||
cb2f3a29 MK |
1602 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1603 | either returns or calls error(). The result is an initialized | |
1604 | struct sym_fns in the objfile structure, that contains cached | |
1605 | information about the symbol file. */ | |
c906108c | 1606 | |
31d99776 DJ |
1607 | static struct sym_fns * |
1608 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1609 | { |
1610 | struct sym_fns *sf; | |
31d99776 | 1611 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1612 | |
75245b24 MS |
1613 | if (our_flavour == bfd_target_srec_flavour |
1614 | || our_flavour == bfd_target_ihex_flavour | |
1615 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1616 | return NULL; /* No symbols. */ |
75245b24 | 1617 | |
c5aa993b | 1618 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1619 | if (our_flavour == sf->sym_flavour) |
1620 | return sf; | |
cb2f3a29 | 1621 | |
8a3fe4f8 | 1622 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1623 | bfd_get_target (abfd)); |
c906108c SS |
1624 | } |
1625 | \f | |
cb2f3a29 | 1626 | |
c906108c SS |
1627 | /* This function runs the load command of our current target. */ |
1628 | ||
1629 | static void | |
fba45db2 | 1630 | load_command (char *arg, int from_tty) |
c906108c | 1631 | { |
4487aabf PA |
1632 | /* The user might be reloading because the binary has changed. Take |
1633 | this opportunity to check. */ | |
1634 | reopen_exec_file (); | |
1635 | reread_symbols (); | |
1636 | ||
c906108c | 1637 | if (arg == NULL) |
1986bccd AS |
1638 | { |
1639 | char *parg; | |
1640 | int count = 0; | |
1641 | ||
1642 | parg = arg = get_exec_file (1); | |
1643 | ||
1644 | /* Count how many \ " ' tab space there are in the name. */ | |
1645 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1646 | { | |
1647 | parg++; | |
1648 | count++; | |
1649 | } | |
1650 | ||
1651 | if (count) | |
1652 | { | |
1653 | /* We need to quote this string so buildargv can pull it apart. */ | |
1654 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1655 | char *ptemp = temp; | |
1656 | char *prev; | |
1657 | ||
1658 | make_cleanup (xfree, temp); | |
1659 | ||
1660 | prev = parg = arg; | |
1661 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1662 | { | |
1663 | strncpy (ptemp, prev, parg - prev); | |
1664 | ptemp += parg - prev; | |
1665 | prev = parg++; | |
1666 | *ptemp++ = '\\'; | |
1667 | } | |
1668 | strcpy (ptemp, prev); | |
1669 | ||
1670 | arg = temp; | |
1671 | } | |
1672 | } | |
1673 | ||
c906108c | 1674 | target_load (arg, from_tty); |
2889e661 JB |
1675 | |
1676 | /* After re-loading the executable, we don't really know which | |
1677 | overlays are mapped any more. */ | |
1678 | overlay_cache_invalid = 1; | |
c906108c SS |
1679 | } |
1680 | ||
1681 | /* This version of "load" should be usable for any target. Currently | |
1682 | it is just used for remote targets, not inftarg.c or core files, | |
1683 | on the theory that only in that case is it useful. | |
1684 | ||
1685 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1686 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1687 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1688 | performance compares. */ | |
917317f4 | 1689 | |
917317f4 JM |
1690 | static int validate_download = 0; |
1691 | ||
e4f9b4d5 MS |
1692 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1693 | ||
1694 | static void | |
1695 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1696 | { | |
1697 | bfd_size_type *sum = data; | |
1698 | ||
2c500098 | 1699 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1700 | } |
1701 | ||
1702 | /* Opaque data for load_section_callback. */ | |
1703 | struct load_section_data { | |
1704 | unsigned long load_offset; | |
a76d924d DJ |
1705 | struct load_progress_data *progress_data; |
1706 | VEC(memory_write_request_s) *requests; | |
1707 | }; | |
1708 | ||
1709 | /* Opaque data for load_progress. */ | |
1710 | struct load_progress_data { | |
1711 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1712 | unsigned long write_count; |
1713 | unsigned long data_count; | |
1714 | bfd_size_type total_size; | |
a76d924d DJ |
1715 | }; |
1716 | ||
1717 | /* Opaque data for load_progress for a single section. */ | |
1718 | struct load_progress_section_data { | |
1719 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1720 | |
a76d924d | 1721 | /* Per-section data. */ |
cf7a04e8 DJ |
1722 | const char *section_name; |
1723 | ULONGEST section_sent; | |
1724 | ULONGEST section_size; | |
1725 | CORE_ADDR lma; | |
1726 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1727 | }; |
1728 | ||
a76d924d | 1729 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1730 | |
1731 | static void | |
1732 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1733 | { | |
a76d924d DJ |
1734 | struct load_progress_section_data *args = untyped_arg; |
1735 | struct load_progress_data *totals; | |
1736 | ||
1737 | if (args == NULL) | |
1738 | /* Writing padding data. No easy way to get at the cumulative | |
1739 | stats, so just ignore this. */ | |
1740 | return; | |
1741 | ||
1742 | totals = args->cumulative; | |
1743 | ||
1744 | if (bytes == 0 && args->section_sent == 0) | |
1745 | { | |
1746 | /* The write is just starting. Let the user know we've started | |
1747 | this section. */ | |
5af949e3 UW |
1748 | ui_out_message (uiout, 0, "Loading section %s, size %s lma %s\n", |
1749 | args->section_name, hex_string (args->section_size), | |
1750 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1751 | return; |
1752 | } | |
cf7a04e8 DJ |
1753 | |
1754 | if (validate_download) | |
1755 | { | |
1756 | /* Broken memories and broken monitors manifest themselves here | |
1757 | when bring new computers to life. This doubles already slow | |
1758 | downloads. */ | |
1759 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1760 | might add a verify_memory() method to the target vector and | |
1761 | then use that. remote.c could implement that method using | |
1762 | the ``qCRC'' packet. */ | |
1763 | gdb_byte *check = xmalloc (bytes); | |
1764 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1765 | ||
1766 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1767 | error (_("Download verify read failed at %s"), |
1768 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1769 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1770 | error (_("Download verify compare failed at %s"), |
1771 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1772 | do_cleanups (verify_cleanups); |
1773 | } | |
a76d924d | 1774 | totals->data_count += bytes; |
cf7a04e8 DJ |
1775 | args->lma += bytes; |
1776 | args->buffer += bytes; | |
a76d924d | 1777 | totals->write_count += 1; |
cf7a04e8 DJ |
1778 | args->section_sent += bytes; |
1779 | if (quit_flag | |
1780 | || (deprecated_ui_load_progress_hook != NULL | |
1781 | && deprecated_ui_load_progress_hook (args->section_name, | |
1782 | args->section_sent))) | |
1783 | error (_("Canceled the download")); | |
1784 | ||
1785 | if (deprecated_show_load_progress != NULL) | |
1786 | deprecated_show_load_progress (args->section_name, | |
1787 | args->section_sent, | |
1788 | args->section_size, | |
a76d924d DJ |
1789 | totals->data_count, |
1790 | totals->total_size); | |
cf7a04e8 DJ |
1791 | } |
1792 | ||
e4f9b4d5 MS |
1793 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1794 | ||
1795 | static void | |
1796 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1797 | { | |
a76d924d | 1798 | struct memory_write_request *new_request; |
e4f9b4d5 | 1799 | struct load_section_data *args = data; |
a76d924d | 1800 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1801 | bfd_size_type size = bfd_get_section_size (asec); |
1802 | gdb_byte *buffer; | |
cf7a04e8 | 1803 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1804 | |
cf7a04e8 DJ |
1805 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1806 | return; | |
e4f9b4d5 | 1807 | |
cf7a04e8 DJ |
1808 | if (size == 0) |
1809 | return; | |
e4f9b4d5 | 1810 | |
a76d924d DJ |
1811 | new_request = VEC_safe_push (memory_write_request_s, |
1812 | args->requests, NULL); | |
1813 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1814 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1815 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1816 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1817 | new_request->data = xmalloc (size); | |
1818 | new_request->baton = section_data; | |
cf7a04e8 | 1819 | |
a76d924d | 1820 | buffer = new_request->data; |
cf7a04e8 | 1821 | |
a76d924d DJ |
1822 | section_data->cumulative = args->progress_data; |
1823 | section_data->section_name = sect_name; | |
1824 | section_data->section_size = size; | |
1825 | section_data->lma = new_request->begin; | |
1826 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1827 | |
1828 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1829 | } |
1830 | ||
1831 | /* Clean up an entire memory request vector, including load | |
1832 | data and progress records. */ | |
cf7a04e8 | 1833 | |
a76d924d DJ |
1834 | static void |
1835 | clear_memory_write_data (void *arg) | |
1836 | { | |
1837 | VEC(memory_write_request_s) **vec_p = arg; | |
1838 | VEC(memory_write_request_s) *vec = *vec_p; | |
1839 | int i; | |
1840 | struct memory_write_request *mr; | |
cf7a04e8 | 1841 | |
a76d924d DJ |
1842 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1843 | { | |
1844 | xfree (mr->data); | |
1845 | xfree (mr->baton); | |
1846 | } | |
1847 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1848 | } |
1849 | ||
c906108c | 1850 | void |
917317f4 | 1851 | generic_load (char *args, int from_tty) |
c906108c | 1852 | { |
c906108c | 1853 | bfd *loadfile_bfd; |
2b71414d | 1854 | struct timeval start_time, end_time; |
917317f4 | 1855 | char *filename; |
1986bccd | 1856 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1857 | struct load_section_data cbdata; |
a76d924d DJ |
1858 | struct load_progress_data total_progress; |
1859 | ||
e4f9b4d5 | 1860 | CORE_ADDR entry; |
1986bccd | 1861 | char **argv; |
e4f9b4d5 | 1862 | |
a76d924d DJ |
1863 | memset (&cbdata, 0, sizeof (cbdata)); |
1864 | memset (&total_progress, 0, sizeof (total_progress)); | |
1865 | cbdata.progress_data = &total_progress; | |
1866 | ||
1867 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1868 | |
d1a41061 PP |
1869 | if (args == NULL) |
1870 | error_no_arg (_("file to load")); | |
1986bccd | 1871 | |
d1a41061 | 1872 | argv = gdb_buildargv (args); |
1986bccd AS |
1873 | make_cleanup_freeargv (argv); |
1874 | ||
1875 | filename = tilde_expand (argv[0]); | |
1876 | make_cleanup (xfree, filename); | |
1877 | ||
1878 | if (argv[1] != NULL) | |
917317f4 JM |
1879 | { |
1880 | char *endptr; | |
ba5f2f8a | 1881 | |
1986bccd AS |
1882 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1883 | ||
1884 | /* If the last word was not a valid number then | |
1885 | treat it as a file name with spaces in. */ | |
1886 | if (argv[1] == endptr) | |
1887 | error (_("Invalid download offset:%s."), argv[1]); | |
1888 | ||
1889 | if (argv[2] != NULL) | |
1890 | error (_("Too many parameters.")); | |
917317f4 | 1891 | } |
c906108c | 1892 | |
917317f4 | 1893 | /* Open the file for loading. */ |
c906108c SS |
1894 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1895 | if (loadfile_bfd == NULL) | |
1896 | { | |
1897 | perror_with_name (filename); | |
1898 | return; | |
1899 | } | |
917317f4 | 1900 | |
c906108c SS |
1901 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1902 | on error it does not free all the storage associated with the | |
1903 | bfd). */ | |
5c65bbb6 | 1904 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1905 | |
c5aa993b | 1906 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1907 | { |
8a3fe4f8 | 1908 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1909 | bfd_errmsg (bfd_get_error ())); |
1910 | } | |
c5aa993b | 1911 | |
5417f6dc | 1912 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1913 | (void *) &total_progress.total_size); |
1914 | ||
1915 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1916 | |
2b71414d | 1917 | gettimeofday (&start_time, NULL); |
c906108c | 1918 | |
a76d924d DJ |
1919 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1920 | load_progress) != 0) | |
1921 | error (_("Load failed")); | |
c906108c | 1922 | |
2b71414d | 1923 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1924 | |
e4f9b4d5 | 1925 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 1926 | ui_out_text (uiout, "Start address "); |
5af949e3 | 1927 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 1928 | ui_out_text (uiout, ", load size "); |
a76d924d | 1929 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 1930 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
1931 | /* We were doing this in remote-mips.c, I suspect it is right |
1932 | for other targets too. */ | |
fb14de7b | 1933 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 1934 | |
7ca9f392 AC |
1935 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1936 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1937 | was commented out), making the call confuses GDB if more than one | |
1938 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 1939 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 1940 | |
a76d924d DJ |
1941 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
1942 | total_progress.write_count, | |
1943 | &start_time, &end_time); | |
c906108c SS |
1944 | |
1945 | do_cleanups (old_cleanups); | |
1946 | } | |
1947 | ||
1948 | /* Report how fast the transfer went. */ | |
1949 | ||
917317f4 JM |
1950 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1951 | replaced by print_transfer_performance (with a very different | |
1952 | function signature). */ | |
1953 | ||
c906108c | 1954 | void |
fba45db2 KB |
1955 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1956 | time_t end_time) | |
c906108c | 1957 | { |
2b71414d DJ |
1958 | struct timeval start, end; |
1959 | ||
1960 | start.tv_sec = start_time; | |
1961 | start.tv_usec = 0; | |
1962 | end.tv_sec = end_time; | |
1963 | end.tv_usec = 0; | |
1964 | ||
1965 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
1966 | } |
1967 | ||
1968 | void | |
d9fcf2fb | 1969 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1970 | unsigned long data_count, |
1971 | unsigned long write_count, | |
2b71414d DJ |
1972 | const struct timeval *start_time, |
1973 | const struct timeval *end_time) | |
917317f4 | 1974 | { |
9f43d28c | 1975 | ULONGEST time_count; |
2b71414d DJ |
1976 | |
1977 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
1978 | accuracy and overflow. */ | |
1979 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
1980 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
1981 | ||
8b93c638 JM |
1982 | ui_out_text (uiout, "Transfer rate: "); |
1983 | if (time_count > 0) | |
1984 | { | |
9f43d28c DJ |
1985 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
1986 | ||
1987 | if (ui_out_is_mi_like_p (uiout)) | |
1988 | { | |
1989 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
1990 | ui_out_text (uiout, " bits/sec"); | |
1991 | } | |
1992 | else if (rate < 1024) | |
1993 | { | |
1994 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
1995 | ui_out_text (uiout, " bytes/sec"); | |
1996 | } | |
1997 | else | |
1998 | { | |
1999 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2000 | ui_out_text (uiout, " KB/sec"); | |
2001 | } | |
8b93c638 JM |
2002 | } |
2003 | else | |
2004 | { | |
ba5f2f8a | 2005 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2006 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2007 | } |
2008 | if (write_count > 0) | |
2009 | { | |
2010 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2011 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2012 | ui_out_text (uiout, " bytes/write"); |
2013 | } | |
2014 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2015 | } |
2016 | ||
2017 | /* This function allows the addition of incrementally linked object files. | |
2018 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2019 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2020 | special case syntax for the rombug target (Rombug is the boot | |
2021 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2022 | rombug case, the user doesn't need to supply a text address, | |
2023 | instead a call to target_link() (in target.c) would supply the | |
2024 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 2025 | |
c906108c | 2026 | static void |
fba45db2 | 2027 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2028 | { |
5af949e3 | 2029 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2030 | char *filename = NULL; |
2df3850c | 2031 | int flags = OBJF_USERLOADED; |
c906108c | 2032 | char *arg; |
2acceee2 | 2033 | int expecting_option = 0; |
db162d44 | 2034 | int section_index = 0; |
2acceee2 JM |
2035 | int argcnt = 0; |
2036 | int sec_num = 0; | |
2037 | int i; | |
db162d44 EZ |
2038 | int expecting_sec_name = 0; |
2039 | int expecting_sec_addr = 0; | |
5b96932b | 2040 | char **argv; |
db162d44 | 2041 | |
a39a16c4 | 2042 | struct sect_opt |
2acceee2 | 2043 | { |
2acceee2 JM |
2044 | char *name; |
2045 | char *value; | |
a39a16c4 | 2046 | }; |
db162d44 | 2047 | |
a39a16c4 MM |
2048 | struct section_addr_info *section_addrs; |
2049 | struct sect_opt *sect_opts = NULL; | |
2050 | size_t num_sect_opts = 0; | |
3017564a | 2051 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2052 | |
a39a16c4 | 2053 | num_sect_opts = 16; |
5417f6dc | 2054 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2055 | * sizeof (struct sect_opt)); |
2056 | ||
c906108c SS |
2057 | dont_repeat (); |
2058 | ||
2059 | if (args == NULL) | |
8a3fe4f8 | 2060 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2061 | |
d1a41061 | 2062 | argv = gdb_buildargv (args); |
5b96932b | 2063 | make_cleanup_freeargv (argv); |
db162d44 | 2064 | |
5b96932b AS |
2065 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2066 | { | |
2067 | /* Process the argument. */ | |
db162d44 | 2068 | if (argcnt == 0) |
c906108c | 2069 | { |
db162d44 EZ |
2070 | /* The first argument is the file name. */ |
2071 | filename = tilde_expand (arg); | |
3017564a | 2072 | make_cleanup (xfree, filename); |
c906108c | 2073 | } |
db162d44 | 2074 | else |
7a78ae4e ND |
2075 | if (argcnt == 1) |
2076 | { | |
2077 | /* The second argument is always the text address at which | |
2078 | to load the program. */ | |
2079 | sect_opts[section_index].name = ".text"; | |
2080 | sect_opts[section_index].value = arg; | |
f414f22f | 2081 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2082 | { |
2083 | num_sect_opts *= 2; | |
5417f6dc | 2084 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2085 | xrealloc (sect_opts, |
5417f6dc | 2086 | num_sect_opts |
a39a16c4 MM |
2087 | * sizeof (struct sect_opt))); |
2088 | } | |
7a78ae4e ND |
2089 | } |
2090 | else | |
2091 | { | |
2092 | /* It's an option (starting with '-') or it's an argument | |
2093 | to an option */ | |
2094 | ||
2095 | if (*arg == '-') | |
2096 | { | |
78a4a9b9 AC |
2097 | if (strcmp (arg, "-readnow") == 0) |
2098 | flags |= OBJF_READNOW; | |
2099 | else if (strcmp (arg, "-s") == 0) | |
2100 | { | |
2101 | expecting_sec_name = 1; | |
2102 | expecting_sec_addr = 1; | |
2103 | } | |
7a78ae4e ND |
2104 | } |
2105 | else | |
2106 | { | |
2107 | if (expecting_sec_name) | |
db162d44 | 2108 | { |
7a78ae4e ND |
2109 | sect_opts[section_index].name = arg; |
2110 | expecting_sec_name = 0; | |
db162d44 EZ |
2111 | } |
2112 | else | |
7a78ae4e ND |
2113 | if (expecting_sec_addr) |
2114 | { | |
2115 | sect_opts[section_index].value = arg; | |
2116 | expecting_sec_addr = 0; | |
f414f22f | 2117 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2118 | { |
2119 | num_sect_opts *= 2; | |
5417f6dc | 2120 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2121 | xrealloc (sect_opts, |
5417f6dc | 2122 | num_sect_opts |
a39a16c4 MM |
2123 | * sizeof (struct sect_opt))); |
2124 | } | |
7a78ae4e ND |
2125 | } |
2126 | else | |
8a3fe4f8 | 2127 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2128 | } |
2129 | } | |
c906108c | 2130 | } |
c906108c | 2131 | |
927890d0 JB |
2132 | /* This command takes at least two arguments. The first one is a |
2133 | filename, and the second is the address where this file has been | |
2134 | loaded. Abort now if this address hasn't been provided by the | |
2135 | user. */ | |
2136 | if (section_index < 1) | |
2137 | error (_("The address where %s has been loaded is missing"), filename); | |
2138 | ||
db162d44 EZ |
2139 | /* Print the prompt for the query below. And save the arguments into |
2140 | a sect_addr_info structure to be passed around to other | |
2141 | functions. We have to split this up into separate print | |
bb599908 | 2142 | statements because hex_string returns a local static |
db162d44 | 2143 | string. */ |
5417f6dc | 2144 | |
a3f17187 | 2145 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2146 | section_addrs = alloc_section_addr_info (section_index); |
2147 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2148 | for (i = 0; i < section_index; i++) |
c906108c | 2149 | { |
db162d44 EZ |
2150 | CORE_ADDR addr; |
2151 | char *val = sect_opts[i].value; | |
2152 | char *sec = sect_opts[i].name; | |
5417f6dc | 2153 | |
ae822768 | 2154 | addr = parse_and_eval_address (val); |
db162d44 | 2155 | |
db162d44 EZ |
2156 | /* Here we store the section offsets in the order they were |
2157 | entered on the command line. */ | |
a39a16c4 MM |
2158 | section_addrs->other[sec_num].name = sec; |
2159 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2160 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2161 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2162 | sec_num++; |
2163 | ||
5417f6dc | 2164 | /* The object's sections are initialized when a |
db162d44 | 2165 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2166 | This happens in reread_symbols. |
db162d44 EZ |
2167 | At this point, we don't know what file type this is, |
2168 | so we can't determine what section names are valid. */ | |
2acceee2 | 2169 | } |
db162d44 | 2170 | |
2acceee2 | 2171 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2172 | error (_("Not confirmed.")); |
c906108c | 2173 | |
7eedccfa PP |
2174 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2175 | section_addrs, flags); | |
c906108c SS |
2176 | |
2177 | /* Getting new symbols may change our opinion about what is | |
2178 | frameless. */ | |
2179 | reinit_frame_cache (); | |
db162d44 | 2180 | do_cleanups (my_cleanups); |
c906108c SS |
2181 | } |
2182 | \f | |
70992597 | 2183 | |
c906108c SS |
2184 | /* Re-read symbols if a symbol-file has changed. */ |
2185 | void | |
fba45db2 | 2186 | reread_symbols (void) |
c906108c SS |
2187 | { |
2188 | struct objfile *objfile; | |
2189 | long new_modtime; | |
2190 | int reread_one = 0; | |
2191 | struct stat new_statbuf; | |
2192 | int res; | |
2193 | ||
2194 | /* With the addition of shared libraries, this should be modified, | |
2195 | the load time should be saved in the partial symbol tables, since | |
2196 | different tables may come from different source files. FIXME. | |
2197 | This routine should then walk down each partial symbol table | |
2198 | and see if the symbol table that it originates from has been changed */ | |
2199 | ||
c5aa993b JM |
2200 | for (objfile = object_files; objfile; objfile = objfile->next) |
2201 | { | |
9cce227f TG |
2202 | /* solib-sunos.c creates one objfile with obfd. */ |
2203 | if (objfile->obfd == NULL) | |
2204 | continue; | |
2205 | ||
2206 | /* Separate debug objfiles are handled in the main objfile. */ | |
2207 | if (objfile->separate_debug_objfile_backlink) | |
2208 | continue; | |
2209 | ||
52d16ba8 | 2210 | #ifdef DEPRECATED_IBM6000_TARGET |
9cce227f TG |
2211 | /* If this object is from a shared library, then you should |
2212 | stat on the library name, not member name. */ | |
c906108c | 2213 | |
9cce227f TG |
2214 | if (objfile->obfd->my_archive) |
2215 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2216 | else | |
c906108c | 2217 | #endif |
9cce227f TG |
2218 | res = stat (objfile->name, &new_statbuf); |
2219 | if (res != 0) | |
2220 | { | |
2221 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ | |
2222 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), | |
2223 | objfile->name); | |
2224 | continue; | |
2225 | } | |
2226 | new_modtime = new_statbuf.st_mtime; | |
2227 | if (new_modtime != objfile->mtime) | |
2228 | { | |
2229 | struct cleanup *old_cleanups; | |
2230 | struct section_offsets *offsets; | |
2231 | int num_offsets; | |
2232 | char *obfd_filename; | |
2233 | ||
2234 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2235 | objfile->name); | |
2236 | ||
2237 | /* There are various functions like symbol_file_add, | |
2238 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2239 | appear to do what we want. But they have various other | |
2240 | effects which we *don't* want. So we just do stuff | |
2241 | ourselves. We don't worry about mapped files (for one thing, | |
2242 | any mapped file will be out of date). */ | |
2243 | ||
2244 | /* If we get an error, blow away this objfile (not sure if | |
2245 | that is the correct response for things like shared | |
2246 | libraries). */ | |
2247 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2248 | /* We need to do this whenever any symbols go away. */ | |
2249 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2250 | ||
2251 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), | |
2252 | bfd_get_filename (exec_bfd)) == 0) | |
2253 | { | |
2254 | /* Reload EXEC_BFD without asking anything. */ | |
2255 | ||
2256 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2257 | } | |
2258 | ||
2259 | /* Clean up any state BFD has sitting around. We don't need | |
2260 | to close the descriptor but BFD lacks a way of closing the | |
2261 | BFD without closing the descriptor. */ | |
2262 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2263 | if (!bfd_close (objfile->obfd)) | |
2264 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2265 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2266 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2267 | if (objfile->obfd == NULL) |
2268 | error (_("Can't open %s to read symbols."), objfile->name); | |
2269 | else | |
2270 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2271 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2272 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2273 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2274 | bfd_errmsg (bfd_get_error ())); | |
2275 | ||
2276 | /* Save the offsets, we will nuke them with the rest of the | |
2277 | objfile_obstack. */ | |
2278 | num_offsets = objfile->num_sections; | |
2279 | offsets = ((struct section_offsets *) | |
2280 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2281 | memcpy (offsets, objfile->section_offsets, | |
2282 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2283 | ||
2284 | /* Remove any references to this objfile in the global | |
2285 | value lists. */ | |
2286 | preserve_values (objfile); | |
2287 | ||
2288 | /* Nuke all the state that we will re-read. Much of the following | |
2289 | code which sets things to NULL really is necessary to tell | |
2290 | other parts of GDB that there is nothing currently there. | |
2291 | ||
2292 | Try to keep the freeing order compatible with free_objfile. */ | |
2293 | ||
2294 | if (objfile->sf != NULL) | |
2295 | { | |
2296 | (*objfile->sf->sym_finish) (objfile); | |
2297 | } | |
2298 | ||
2299 | clear_objfile_data (objfile); | |
2300 | ||
15d123c9 | 2301 | /* Free the separate debug objfiles. It will be |
9cce227f | 2302 | automatically recreated by sym_read. */ |
15d123c9 | 2303 | free_objfile_separate_debug (objfile); |
9cce227f TG |
2304 | |
2305 | /* FIXME: Do we have to free a whole linked list, or is this | |
2306 | enough? */ | |
2307 | if (objfile->global_psymbols.list) | |
2308 | xfree (objfile->global_psymbols.list); | |
2309 | memset (&objfile->global_psymbols, 0, | |
2310 | sizeof (objfile->global_psymbols)); | |
2311 | if (objfile->static_psymbols.list) | |
2312 | xfree (objfile->static_psymbols.list); | |
2313 | memset (&objfile->static_psymbols, 0, | |
2314 | sizeof (objfile->static_psymbols)); | |
2315 | ||
2316 | /* Free the obstacks for non-reusable objfiles */ | |
2317 | bcache_xfree (objfile->psymbol_cache); | |
2318 | objfile->psymbol_cache = bcache_xmalloc (); | |
2319 | bcache_xfree (objfile->macro_cache); | |
2320 | objfile->macro_cache = bcache_xmalloc (); | |
2321 | bcache_xfree (objfile->filename_cache); | |
2322 | objfile->filename_cache = bcache_xmalloc (); | |
2323 | if (objfile->demangled_names_hash != NULL) | |
2324 | { | |
2325 | htab_delete (objfile->demangled_names_hash); | |
2326 | objfile->demangled_names_hash = NULL; | |
2327 | } | |
2328 | obstack_free (&objfile->objfile_obstack, 0); | |
2329 | objfile->sections = NULL; | |
2330 | objfile->symtabs = NULL; | |
2331 | objfile->psymtabs = NULL; | |
2332 | objfile->psymtabs_addrmap = NULL; | |
2333 | objfile->free_psymtabs = NULL; | |
2334 | objfile->cp_namespace_symtab = NULL; | |
2335 | objfile->msymbols = NULL; | |
2336 | objfile->deprecated_sym_private = NULL; | |
2337 | objfile->minimal_symbol_count = 0; | |
2338 | memset (&objfile->msymbol_hash, 0, | |
2339 | sizeof (objfile->msymbol_hash)); | |
2340 | memset (&objfile->msymbol_demangled_hash, 0, | |
2341 | sizeof (objfile->msymbol_demangled_hash)); | |
2342 | ||
2343 | objfile->psymbol_cache = bcache_xmalloc (); | |
2344 | objfile->macro_cache = bcache_xmalloc (); | |
2345 | objfile->filename_cache = bcache_xmalloc (); | |
2346 | /* obstack_init also initializes the obstack so it is | |
2347 | empty. We could use obstack_specify_allocation but | |
2348 | gdb_obstack.h specifies the alloc/dealloc | |
2349 | functions. */ | |
2350 | obstack_init (&objfile->objfile_obstack); | |
2351 | if (build_objfile_section_table (objfile)) | |
2352 | { | |
2353 | error (_("Can't find the file sections in `%s': %s"), | |
2354 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2355 | } | |
2356 | terminate_minimal_symbol_table (objfile); | |
2357 | ||
2358 | /* We use the same section offsets as from last time. I'm not | |
2359 | sure whether that is always correct for shared libraries. */ | |
2360 | objfile->section_offsets = (struct section_offsets *) | |
2361 | obstack_alloc (&objfile->objfile_obstack, | |
2362 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2363 | memcpy (objfile->section_offsets, offsets, | |
2364 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2365 | objfile->num_sections = num_offsets; | |
2366 | ||
2367 | /* What the hell is sym_new_init for, anyway? The concept of | |
2368 | distinguishing between the main file and additional files | |
2369 | in this way seems rather dubious. */ | |
2370 | if (objfile == symfile_objfile) | |
c906108c | 2371 | { |
9cce227f | 2372 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2373 | } |
9cce227f TG |
2374 | |
2375 | (*objfile->sf->sym_init) (objfile); | |
2376 | clear_complaints (&symfile_complaints, 1, 1); | |
2377 | /* Do not set flags as this is safe and we don't want to be | |
2378 | verbose. */ | |
2379 | (*objfile->sf->sym_read) (objfile, 0); | |
2380 | if (!objfile_has_symbols (objfile)) | |
c906108c | 2381 | { |
9cce227f TG |
2382 | wrap_here (""); |
2383 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2384 | wrap_here (""); | |
c5aa993b | 2385 | } |
9cce227f TG |
2386 | |
2387 | /* We're done reading the symbol file; finish off complaints. */ | |
2388 | clear_complaints (&symfile_complaints, 0, 1); | |
2389 | ||
2390 | /* Getting new symbols may change our opinion about what is | |
2391 | frameless. */ | |
2392 | ||
2393 | reinit_frame_cache (); | |
2394 | ||
2395 | /* Discard cleanups as symbol reading was successful. */ | |
2396 | discard_cleanups (old_cleanups); | |
2397 | ||
2398 | /* If the mtime has changed between the time we set new_modtime | |
2399 | and now, we *want* this to be out of date, so don't call stat | |
2400 | again now. */ | |
2401 | objfile->mtime = new_modtime; | |
2402 | reread_one = 1; | |
2403 | init_entry_point_info (objfile); | |
c906108c SS |
2404 | } |
2405 | } | |
c906108c SS |
2406 | |
2407 | if (reread_one) | |
ea53e89f | 2408 | { |
ff3536bc UW |
2409 | /* Notify objfiles that we've modified objfile sections. */ |
2410 | objfiles_changed (); | |
2411 | ||
ea53e89f JB |
2412 | clear_symtab_users (); |
2413 | /* At least one objfile has changed, so we can consider that | |
2414 | the executable we're debugging has changed too. */ | |
781b42b0 | 2415 | observer_notify_executable_changed (); |
ea53e89f | 2416 | } |
c906108c | 2417 | } |
c906108c SS |
2418 | \f |
2419 | ||
c5aa993b JM |
2420 | |
2421 | typedef struct | |
2422 | { | |
2423 | char *ext; | |
c906108c | 2424 | enum language lang; |
c5aa993b JM |
2425 | } |
2426 | filename_language; | |
c906108c | 2427 | |
c5aa993b | 2428 | static filename_language *filename_language_table; |
c906108c SS |
2429 | static int fl_table_size, fl_table_next; |
2430 | ||
2431 | static void | |
fba45db2 | 2432 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2433 | { |
2434 | if (fl_table_next >= fl_table_size) | |
2435 | { | |
2436 | fl_table_size += 10; | |
5417f6dc | 2437 | filename_language_table = |
25bf3106 PM |
2438 | xrealloc (filename_language_table, |
2439 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2440 | } |
2441 | ||
4fcf66da | 2442 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2443 | filename_language_table[fl_table_next].lang = lang; |
2444 | fl_table_next++; | |
2445 | } | |
2446 | ||
2447 | static char *ext_args; | |
920d2a44 AC |
2448 | static void |
2449 | show_ext_args (struct ui_file *file, int from_tty, | |
2450 | struct cmd_list_element *c, const char *value) | |
2451 | { | |
2452 | fprintf_filtered (file, _("\ | |
2453 | Mapping between filename extension and source language is \"%s\".\n"), | |
2454 | value); | |
2455 | } | |
c906108c SS |
2456 | |
2457 | static void | |
26c41df3 | 2458 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2459 | { |
2460 | int i; | |
2461 | char *cp = ext_args; | |
2462 | enum language lang; | |
2463 | ||
2464 | /* First arg is filename extension, starting with '.' */ | |
2465 | if (*cp != '.') | |
8a3fe4f8 | 2466 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2467 | |
2468 | /* Find end of first arg. */ | |
c5aa993b | 2469 | while (*cp && !isspace (*cp)) |
c906108c SS |
2470 | cp++; |
2471 | ||
2472 | if (*cp == '\0') | |
8a3fe4f8 | 2473 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2474 | ext_args); |
2475 | ||
2476 | /* Null-terminate first arg */ | |
c5aa993b | 2477 | *cp++ = '\0'; |
c906108c SS |
2478 | |
2479 | /* Find beginning of second arg, which should be a source language. */ | |
2480 | while (*cp && isspace (*cp)) | |
2481 | cp++; | |
2482 | ||
2483 | if (*cp == '\0') | |
8a3fe4f8 | 2484 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2485 | ext_args); |
2486 | ||
2487 | /* Lookup the language from among those we know. */ | |
2488 | lang = language_enum (cp); | |
2489 | ||
2490 | /* Now lookup the filename extension: do we already know it? */ | |
2491 | for (i = 0; i < fl_table_next; i++) | |
2492 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2493 | break; | |
2494 | ||
2495 | if (i >= fl_table_next) | |
2496 | { | |
2497 | /* new file extension */ | |
2498 | add_filename_language (ext_args, lang); | |
2499 | } | |
2500 | else | |
2501 | { | |
2502 | /* redefining a previously known filename extension */ | |
2503 | ||
2504 | /* if (from_tty) */ | |
2505 | /* query ("Really make files of type %s '%s'?", */ | |
2506 | /* ext_args, language_str (lang)); */ | |
2507 | ||
b8c9b27d | 2508 | xfree (filename_language_table[i].ext); |
4fcf66da | 2509 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2510 | filename_language_table[i].lang = lang; |
2511 | } | |
2512 | } | |
2513 | ||
2514 | static void | |
fba45db2 | 2515 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2516 | { |
2517 | int i; | |
2518 | ||
a3f17187 | 2519 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2520 | printf_filtered ("\n\n"); |
2521 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2522 | printf_filtered ("\t%s\t- %s\n", |
2523 | filename_language_table[i].ext, | |
c906108c SS |
2524 | language_str (filename_language_table[i].lang)); |
2525 | } | |
2526 | ||
2527 | static void | |
fba45db2 | 2528 | init_filename_language_table (void) |
c906108c SS |
2529 | { |
2530 | if (fl_table_size == 0) /* protect against repetition */ | |
2531 | { | |
2532 | fl_table_size = 20; | |
2533 | fl_table_next = 0; | |
c5aa993b | 2534 | filename_language_table = |
c906108c | 2535 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2536 | add_filename_language (".c", language_c); |
2537 | add_filename_language (".C", language_cplus); | |
2538 | add_filename_language (".cc", language_cplus); | |
2539 | add_filename_language (".cp", language_cplus); | |
2540 | add_filename_language (".cpp", language_cplus); | |
2541 | add_filename_language (".cxx", language_cplus); | |
2542 | add_filename_language (".c++", language_cplus); | |
2543 | add_filename_language (".java", language_java); | |
c906108c | 2544 | add_filename_language (".class", language_java); |
da2cf7e0 | 2545 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2546 | add_filename_language (".f", language_fortran); |
2547 | add_filename_language (".F", language_fortran); | |
2548 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2549 | add_filename_language (".sx", language_asm); |
c5aa993b | 2550 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2551 | add_filename_language (".pas", language_pascal); |
2552 | add_filename_language (".p", language_pascal); | |
2553 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2554 | add_filename_language (".adb", language_ada); |
2555 | add_filename_language (".ads", language_ada); | |
2556 | add_filename_language (".a", language_ada); | |
2557 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2558 | } |
2559 | } | |
2560 | ||
2561 | enum language | |
fba45db2 | 2562 | deduce_language_from_filename (char *filename) |
c906108c SS |
2563 | { |
2564 | int i; | |
2565 | char *cp; | |
2566 | ||
2567 | if (filename != NULL) | |
2568 | if ((cp = strrchr (filename, '.')) != NULL) | |
2569 | for (i = 0; i < fl_table_next; i++) | |
2570 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2571 | return filename_language_table[i].lang; | |
2572 | ||
2573 | return language_unknown; | |
2574 | } | |
2575 | \f | |
2576 | /* allocate_symtab: | |
2577 | ||
2578 | Allocate and partly initialize a new symbol table. Return a pointer | |
2579 | to it. error() if no space. | |
2580 | ||
2581 | Caller must set these fields: | |
c5aa993b JM |
2582 | LINETABLE(symtab) |
2583 | symtab->blockvector | |
2584 | symtab->dirname | |
2585 | symtab->free_code | |
2586 | symtab->free_ptr | |
2587 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2588 | */ |
2589 | ||
2590 | struct symtab * | |
fba45db2 | 2591 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2592 | { |
52f0bd74 | 2593 | struct symtab *symtab; |
c906108c SS |
2594 | |
2595 | symtab = (struct symtab *) | |
4a146b47 | 2596 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2597 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2598 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2599 | objfile->filename_cache); | |
c5aa993b JM |
2600 | symtab->fullname = NULL; |
2601 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2602 | symtab->debugformat = "unknown"; |
c906108c SS |
2603 | |
2604 | /* Hook it to the objfile it comes from */ | |
2605 | ||
c5aa993b JM |
2606 | symtab->objfile = objfile; |
2607 | symtab->next = objfile->symtabs; | |
2608 | objfile->symtabs = symtab; | |
c906108c | 2609 | |
c906108c SS |
2610 | return (symtab); |
2611 | } | |
2612 | ||
2613 | struct partial_symtab * | |
d85a05f0 | 2614 | allocate_psymtab (const char *filename, struct objfile *objfile) |
c906108c SS |
2615 | { |
2616 | struct partial_symtab *psymtab; | |
2617 | ||
c5aa993b | 2618 | if (objfile->free_psymtabs) |
c906108c | 2619 | { |
c5aa993b JM |
2620 | psymtab = objfile->free_psymtabs; |
2621 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2622 | } |
2623 | else | |
2624 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2625 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2626 | sizeof (struct partial_symtab)); |
2627 | ||
2628 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
10abe6bf TT |
2629 | psymtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2630 | objfile->filename_cache); | |
c5aa993b | 2631 | psymtab->symtab = NULL; |
c906108c SS |
2632 | |
2633 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2634 | Psymtabs are searched in most recent inserted -> least recent | |
2635 | inserted order. */ | |
2636 | ||
c5aa993b JM |
2637 | psymtab->objfile = objfile; |
2638 | psymtab->next = objfile->psymtabs; | |
2639 | objfile->psymtabs = psymtab; | |
c906108c SS |
2640 | #if 0 |
2641 | { | |
2642 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2643 | psymtab->objfile = objfile; |
2644 | psymtab->next = NULL; | |
2645 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2646 | while ((*prev_pst) != NULL) |
c5aa993b | 2647 | prev_pst = &((*prev_pst)->next); |
c906108c | 2648 | (*prev_pst) = psymtab; |
c5aa993b | 2649 | } |
c906108c | 2650 | #endif |
c5aa993b | 2651 | |
c906108c SS |
2652 | return (psymtab); |
2653 | } | |
2654 | ||
2655 | void | |
fba45db2 | 2656 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2657 | { |
2658 | struct partial_symtab **prev_pst; | |
2659 | ||
2660 | /* From dbxread.c: | |
2661 | Empty psymtabs happen as a result of header files which don't | |
2662 | have any symbols in them. There can be a lot of them. But this | |
2663 | check is wrong, in that a psymtab with N_SLINE entries but | |
2664 | nothing else is not empty, but we don't realize that. Fixing | |
2665 | that without slowing things down might be tricky. */ | |
2666 | ||
2667 | /* First, snip it out of the psymtab chain */ | |
2668 | ||
2669 | prev_pst = &(pst->objfile->psymtabs); | |
2670 | while ((*prev_pst) != pst) | |
2671 | prev_pst = &((*prev_pst)->next); | |
2672 | (*prev_pst) = pst->next; | |
2673 | ||
2674 | /* Next, put it on a free list for recycling */ | |
2675 | ||
2676 | pst->next = pst->objfile->free_psymtabs; | |
2677 | pst->objfile->free_psymtabs = pst; | |
2678 | } | |
c906108c | 2679 | \f |
c5aa993b | 2680 | |
c906108c SS |
2681 | /* Reset all data structures in gdb which may contain references to symbol |
2682 | table data. */ | |
2683 | ||
2684 | void | |
fba45db2 | 2685 | clear_symtab_users (void) |
c906108c SS |
2686 | { |
2687 | /* Someday, we should do better than this, by only blowing away | |
2688 | the things that really need to be blown. */ | |
c0501be5 DJ |
2689 | |
2690 | /* Clear the "current" symtab first, because it is no longer valid. | |
2691 | breakpoint_re_set may try to access the current symtab. */ | |
2692 | clear_current_source_symtab_and_line (); | |
2693 | ||
c906108c | 2694 | clear_displays (); |
c906108c | 2695 | breakpoint_re_set (); |
6c95b8df | 2696 | set_default_breakpoint (0, NULL, 0, 0, 0); |
c906108c | 2697 | clear_pc_function_cache (); |
06d3b283 | 2698 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2699 | |
2700 | /* Clear globals which might have pointed into a removed objfile. | |
2701 | FIXME: It's not clear which of these are supposed to persist | |
2702 | between expressions and which ought to be reset each time. */ | |
2703 | expression_context_block = NULL; | |
2704 | innermost_block = NULL; | |
8756216b DP |
2705 | |
2706 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2707 | varobj_invalidate (); | |
2708 | ||
c906108c SS |
2709 | } |
2710 | ||
74b7792f AC |
2711 | static void |
2712 | clear_symtab_users_cleanup (void *ignore) | |
2713 | { | |
2714 | clear_symtab_users (); | |
2715 | } | |
2716 | ||
c906108c SS |
2717 | /* clear_symtab_users_once: |
2718 | ||
2719 | This function is run after symbol reading, or from a cleanup. | |
2720 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2721 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2722 | reference it have not yet been cleared or re-directed. (The old |
2723 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2724 | below.) | |
2725 | ||
2726 | This function can be queued N times as a cleanup, or called | |
2727 | directly; it will do all the work the first time, and then will be a | |
2728 | no-op until the next time it is queued. This works by bumping a | |
2729 | counter at queueing time. Much later when the cleanup is run, or at | |
2730 | the end of symbol processing (in case the cleanup is discarded), if | |
2731 | the queued count is greater than the "done-count", we do the work | |
2732 | and set the done-count to the queued count. If the queued count is | |
2733 | less than or equal to the done-count, we just ignore the call. This | |
2734 | is needed because reading a single .o file will often replace many | |
2735 | symtabs (one per .h file, for example), and we don't want to reset | |
2736 | the breakpoints N times in the user's face. | |
2737 | ||
2738 | The reason we both queue a cleanup, and call it directly after symbol | |
2739 | reading, is because the cleanup protects us in case of errors, but is | |
2740 | discarded if symbol reading is successful. */ | |
2741 | ||
2742 | #if 0 | |
2743 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2744 | is no longer needed. */ | |
a14ed312 | 2745 | static void clear_symtab_users_once (void); |
c906108c SS |
2746 | |
2747 | static int clear_symtab_users_queued; | |
2748 | static int clear_symtab_users_done; | |
2749 | ||
2750 | static void | |
fba45db2 | 2751 | clear_symtab_users_once (void) |
c906108c SS |
2752 | { |
2753 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2754 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2755 | return; | |
2756 | clear_symtab_users_done = clear_symtab_users_queued; | |
2757 | ||
2758 | clear_symtab_users (); | |
2759 | } | |
2760 | #endif | |
2761 | ||
2762 | /* Delete the specified psymtab, and any others that reference it. */ | |
2763 | ||
2764 | static void | |
fba45db2 | 2765 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2766 | { |
2767 | struct partial_symtab *ps, *pprev = NULL; | |
2768 | int i; | |
2769 | ||
2770 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2771 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2772 | { | |
2773 | if (ps == pst) | |
2774 | break; | |
2775 | pprev = ps; | |
2776 | } | |
c906108c | 2777 | |
c5aa993b JM |
2778 | if (ps) |
2779 | { | |
2780 | /* Unhook it from the chain. */ | |
2781 | if (ps == pst->objfile->psymtabs) | |
2782 | pst->objfile->psymtabs = ps->next; | |
2783 | else | |
2784 | pprev->next = ps->next; | |
2785 | ||
2786 | /* FIXME, we can't conveniently deallocate the entries in the | |
2787 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2788 | this psymtab points to. These just take up space until all | |
2789 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2790 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2791 | |
2792 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2793 | again: | |
2794 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2795 | { | |
2796 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2797 | { | |
2798 | if (ps->dependencies[i] == pst) | |
2799 | { | |
2800 | cashier_psymtab (ps); | |
2801 | goto again; /* Must restart, chain has been munged. */ | |
2802 | } | |
2803 | } | |
c906108c | 2804 | } |
c906108c | 2805 | } |
c906108c SS |
2806 | } |
2807 | ||
2808 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2809 | with any dependent breakpoints, displays, etc. | |
2810 | Used when loading new versions of object modules with the "add-file" | |
2811 | command. This is only called on the top-level symtab or psymtab's name; | |
2812 | it is not called for subsidiary files such as .h files. | |
2813 | ||
2814 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2815 | FIXME. The return value appears to never be used. |
c906108c SS |
2816 | |
2817 | FIXME. I think this is not the best way to do this. We should | |
2818 | work on being gentler to the environment while still cleaning up | |
2819 | all stray pointers into the freed symtab. */ | |
2820 | ||
2821 | int | |
fba45db2 | 2822 | free_named_symtabs (char *name) |
c906108c SS |
2823 | { |
2824 | #if 0 | |
2825 | /* FIXME: With the new method of each objfile having it's own | |
2826 | psymtab list, this function needs serious rethinking. In particular, | |
2827 | why was it ever necessary to toss psymtabs with specific compilation | |
2828 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2829 | file? -- fnf | |
2830 | Well, the answer is that some systems permit reloading of particular | |
2831 | compilation units. We want to blow away any old info about these | |
2832 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2833 | ||
52f0bd74 AC |
2834 | struct symtab *s; |
2835 | struct symtab *prev; | |
2836 | struct partial_symtab *ps; | |
c906108c SS |
2837 | struct blockvector *bv; |
2838 | int blewit = 0; | |
2839 | ||
2840 | /* We only wack things if the symbol-reload switch is set. */ | |
2841 | if (!symbol_reloading) | |
2842 | return 0; | |
2843 | ||
2844 | /* Some symbol formats have trouble providing file names... */ | |
2845 | if (name == 0 || *name == '\0') | |
2846 | return 0; | |
2847 | ||
2848 | /* Look for a psymtab with the specified name. */ | |
2849 | ||
2850 | again2: | |
c5aa993b JM |
2851 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2852 | { | |
6314a349 | 2853 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2854 | { |
2855 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2856 | goto again2; /* Must restart, chain has been munged */ | |
2857 | } | |
c906108c | 2858 | } |
c906108c SS |
2859 | |
2860 | /* Look for a symtab with the specified name. */ | |
2861 | ||
2862 | for (s = symtab_list; s; s = s->next) | |
2863 | { | |
6314a349 | 2864 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2865 | break; |
2866 | prev = s; | |
2867 | } | |
2868 | ||
2869 | if (s) | |
2870 | { | |
2871 | if (s == symtab_list) | |
2872 | symtab_list = s->next; | |
2873 | else | |
2874 | prev->next = s->next; | |
2875 | ||
2876 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2877 | or not they depend on the symtab being freed. This should be |
2878 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2879 | |
2880 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2881 | This test is necessary due to a bug in "dbxread.c" that |
2882 | causes empty symtabs to be created for N_SO symbols that | |
2883 | contain the pathname of the object file. (This problem | |
2884 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2885 | |
2886 | bv = BLOCKVECTOR (s); | |
2887 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2888 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2889 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2890 | { | |
e2e0b3e5 | 2891 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 2892 | name); |
c906108c SS |
2893 | clear_symtab_users_queued++; |
2894 | make_cleanup (clear_symtab_users_once, 0); | |
2895 | blewit = 1; | |
c5aa993b JM |
2896 | } |
2897 | else | |
e2e0b3e5 AC |
2898 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
2899 | name); | |
c906108c SS |
2900 | |
2901 | free_symtab (s); | |
2902 | } | |
2903 | else | |
2904 | { | |
2905 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2906 | even though no symtab was found, since the file might have |
2907 | been compiled without debugging, and hence not be associated | |
2908 | with a symtab. In order to handle this correctly, we would need | |
2909 | to keep a list of text address ranges for undebuggable files. | |
2910 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2911 | ; |
2912 | } | |
2913 | ||
2914 | /* FIXME, what about the minimal symbol table? */ | |
2915 | return blewit; | |
2916 | #else | |
2917 | return (0); | |
2918 | #endif | |
2919 | } | |
2920 | \f | |
2921 | /* Allocate and partially fill a partial symtab. It will be | |
2922 | completely filled at the end of the symbol list. | |
2923 | ||
d4f3574e | 2924 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2925 | |
2926 | struct partial_symtab * | |
fba45db2 | 2927 | start_psymtab_common (struct objfile *objfile, |
d85a05f0 DJ |
2928 | struct section_offsets *section_offsets, |
2929 | const char *filename, | |
fba45db2 KB |
2930 | CORE_ADDR textlow, struct partial_symbol **global_syms, |
2931 | struct partial_symbol **static_syms) | |
c906108c SS |
2932 | { |
2933 | struct partial_symtab *psymtab; | |
2934 | ||
2935 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2936 | psymtab->section_offsets = section_offsets; |
2937 | psymtab->textlow = textlow; | |
2938 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2939 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2940 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2941 | return (psymtab); |
2942 | } | |
2943 | \f | |
2e618c13 AR |
2944 | /* Helper function, initialises partial symbol structure and stashes |
2945 | it into objfile's bcache. Note that our caching mechanism will | |
2946 | use all fields of struct partial_symbol to determine hash value of the | |
2947 | structure. In other words, having two symbols with the same name but | |
2948 | different domain (or address) is possible and correct. */ | |
2949 | ||
11d31d94 | 2950 | static const struct partial_symbol * |
04a679b8 TT |
2951 | add_psymbol_to_bcache (char *name, int namelength, int copy_name, |
2952 | domain_enum domain, | |
2e618c13 AR |
2953 | enum address_class class, |
2954 | long val, /* Value as a long */ | |
2955 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2956 | enum language language, struct objfile *objfile, | |
2957 | int *added) | |
2958 | { | |
69a943f0 TT |
2959 | /* psymbol is static so that there will be no uninitialized gaps in the |
2960 | structure which might contain random data, causing cache misses in | |
2961 | bcache. */ | |
2962 | static struct partial_symbol psymbol; | |
2963 | ||
2964 | /* However, we must ensure that the entire 'value' field has been | |
2965 | zeroed before assigning to it, because an assignment may not | |
2966 | write the entire field. */ | |
2967 | memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value)); | |
2e618c13 AR |
2968 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2969 | if (val != 0) | |
2970 | { | |
2971 | SYMBOL_VALUE (&psymbol) = val; | |
2972 | } | |
2973 | else | |
2974 | { | |
2975 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2976 | } | |
2977 | SYMBOL_SECTION (&psymbol) = 0; | |
2978 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2979 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
2980 | PSYMBOL_CLASS (&psymbol) = class; | |
2981 | ||
04a679b8 | 2982 | SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile); |
2e618c13 AR |
2983 | |
2984 | /* Stash the partial symbol away in the cache */ | |
11d31d94 TT |
2985 | return bcache_full (&psymbol, sizeof (struct partial_symbol), |
2986 | objfile->psymbol_cache, added); | |
2e618c13 AR |
2987 | } |
2988 | ||
2989 | /* Helper function, adds partial symbol to the given partial symbol | |
2990 | list. */ | |
2991 | ||
2992 | static void | |
2993 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
11d31d94 | 2994 | const struct partial_symbol *psym, |
2e618c13 AR |
2995 | struct objfile *objfile) |
2996 | { | |
2997 | if (list->next >= list->list + list->size) | |
2998 | extend_psymbol_list (list, objfile); | |
11d31d94 | 2999 | *list->next++ = (struct partial_symbol *) psym; |
2e618c13 AR |
3000 | OBJSTAT (objfile, n_psyms++); |
3001 | } | |
3002 | ||
c906108c | 3003 | /* Add a symbol with a long value to a psymtab. |
5417f6dc | 3004 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
3005 | Return the partial symbol that has been added. */ |
3006 | ||
3007 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
3008 | symbol is so that callers can get access to the symbol's demangled | |
3009 | name, which they don't have any cheap way to determine otherwise. | |
3010 | (Currenly, dwarf2read.c is the only file who uses that information, | |
3011 | though it's possible that other readers might in the future.) | |
3012 | Elena wasn't thrilled about that, and I don't blame her, but we | |
3013 | couldn't come up with a better way to get that information. If | |
3014 | it's needed in other situations, we could consider breaking up | |
3015 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
3016 | cache. */ | |
3017 | ||
3018 | const struct partial_symbol * | |
04a679b8 TT |
3019 | add_psymbol_to_list (char *name, int namelength, int copy_name, |
3020 | domain_enum domain, | |
fba45db2 | 3021 | enum address_class class, |
2e618c13 AR |
3022 | struct psymbol_allocation_list *list, |
3023 | long val, /* Value as a long */ | |
fba45db2 KB |
3024 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
3025 | enum language language, struct objfile *objfile) | |
c906108c | 3026 | { |
11d31d94 | 3027 | const struct partial_symbol *psym; |
2de7ced7 | 3028 | |
2e618c13 | 3029 | int added; |
c906108c SS |
3030 | |
3031 | /* Stash the partial symbol away in the cache */ | |
04a679b8 | 3032 | psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class, |
2e618c13 | 3033 | val, coreaddr, language, objfile, &added); |
c906108c | 3034 | |
2e618c13 AR |
3035 | /* Do not duplicate global partial symbols. */ |
3036 | if (list == &objfile->global_psymbols | |
3037 | && !added) | |
3038 | return psym; | |
5c4e30ca | 3039 | |
2e618c13 AR |
3040 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
3041 | append_psymbol_to_list (list, psym, objfile); | |
5c4e30ca | 3042 | return psym; |
c906108c SS |
3043 | } |
3044 | ||
c906108c SS |
3045 | /* Initialize storage for partial symbols. */ |
3046 | ||
3047 | void | |
fba45db2 | 3048 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
3049 | { |
3050 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
3051 | |
3052 | if (objfile->global_psymbols.list) | |
c906108c | 3053 | { |
2dc74dc1 | 3054 | xfree (objfile->global_psymbols.list); |
c906108c | 3055 | } |
c5aa993b | 3056 | if (objfile->static_psymbols.list) |
c906108c | 3057 | { |
2dc74dc1 | 3058 | xfree (objfile->static_psymbols.list); |
c906108c | 3059 | } |
c5aa993b | 3060 | |
c906108c SS |
3061 | /* Current best guess is that approximately a twentieth |
3062 | of the total symbols (in a debugging file) are global or static | |
3063 | oriented symbols */ | |
c906108c | 3064 | |
c5aa993b JM |
3065 | objfile->global_psymbols.size = total_symbols / 10; |
3066 | objfile->static_psymbols.size = total_symbols / 10; | |
3067 | ||
3068 | if (objfile->global_psymbols.size > 0) | |
c906108c | 3069 | { |
c5aa993b JM |
3070 | objfile->global_psymbols.next = |
3071 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3072 | xmalloc ((objfile->global_psymbols.size |
3073 | * sizeof (struct partial_symbol *))); | |
c906108c | 3074 | } |
c5aa993b | 3075 | if (objfile->static_psymbols.size > 0) |
c906108c | 3076 | { |
c5aa993b JM |
3077 | objfile->static_psymbols.next = |
3078 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3079 | xmalloc ((objfile->static_psymbols.size |
3080 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
3081 | } |
3082 | } | |
3083 | ||
3084 | /* OVERLAYS: | |
3085 | The following code implements an abstraction for debugging overlay sections. | |
3086 | ||
3087 | The target model is as follows: | |
3088 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3089 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3090 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3091 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3092 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3093 | sections should be considered to be mapped from the VMA to the LMA. |
3094 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3095 | For instance, if a section has been mapped then its contents |
c5aa993b | 3096 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3097 | |
3098 | Two levels of debugger support for overlays are available. One is | |
3099 | "manual", in which the debugger relies on the user to tell it which | |
3100 | overlays are currently mapped. This level of support is | |
3101 | implemented entirely in the core debugger, and the information about | |
3102 | whether a section is mapped is kept in the objfile->obj_section table. | |
3103 | ||
3104 | The second level of support is "automatic", and is only available if | |
3105 | the target-specific code provides functionality to read the target's | |
3106 | overlay mapping table, and translate its contents for the debugger | |
3107 | (by updating the mapped state information in the obj_section tables). | |
3108 | ||
3109 | The interface is as follows: | |
c5aa993b JM |
3110 | User commands: |
3111 | overlay map <name> -- tell gdb to consider this section mapped | |
3112 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3113 | overlay list -- list the sections that GDB thinks are mapped | |
3114 | overlay read-target -- get the target's state of what's mapped | |
3115 | overlay off/manual/auto -- set overlay debugging state | |
3116 | Functional interface: | |
3117 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3118 | section, return that section. | |
5417f6dc | 3119 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 3120 | the pc, either in its VMA or its LMA |
714835d5 | 3121 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
3122 | section_is_overlay(sect): true if section's VMA != LMA |
3123 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3124 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3125 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3126 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3127 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3128 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3129 | either in VMA or LMA depending on whether | |
3130 | the symbol's section is currently mapped | |
c906108c SS |
3131 | */ |
3132 | ||
3133 | /* Overlay debugging state: */ | |
3134 | ||
d874f1e2 | 3135 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
3136 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
3137 | ||
c906108c | 3138 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3139 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3140 | SECTION is loaded at an address different from where it will "run". */ |
3141 | ||
3142 | int | |
714835d5 | 3143 | section_is_overlay (struct obj_section *section) |
c906108c | 3144 | { |
714835d5 UW |
3145 | if (overlay_debugging && section) |
3146 | { | |
3147 | bfd *abfd = section->objfile->obfd; | |
3148 | asection *bfd_section = section->the_bfd_section; | |
3149 | ||
3150 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
3151 | && bfd_section_lma (abfd, bfd_section) | |
3152 | != bfd_section_vma (abfd, bfd_section)) | |
3153 | return 1; | |
3154 | } | |
c906108c SS |
3155 | |
3156 | return 0; | |
3157 | } | |
3158 | ||
3159 | /* Function: overlay_invalidate_all (void) | |
3160 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3161 | ||
3162 | static void | |
fba45db2 | 3163 | overlay_invalidate_all (void) |
c906108c | 3164 | { |
c5aa993b | 3165 | struct objfile *objfile; |
c906108c SS |
3166 | struct obj_section *sect; |
3167 | ||
3168 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3169 | if (section_is_overlay (sect)) |
3170 | sect->ovly_mapped = -1; | |
c906108c SS |
3171 | } |
3172 | ||
714835d5 | 3173 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3174 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3175 | |
3176 | Access to the ovly_mapped flag is restricted to this function, so | |
3177 | that we can do automatic update. If the global flag | |
3178 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3179 | overlay_invalidate_all. If the mapped state of the particular | |
3180 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3181 | ||
714835d5 UW |
3182 | int |
3183 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3184 | { |
9216df95 UW |
3185 | struct gdbarch *gdbarch; |
3186 | ||
714835d5 | 3187 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3188 | return 0; |
3189 | ||
c5aa993b | 3190 | switch (overlay_debugging) |
c906108c SS |
3191 | { |
3192 | default: | |
d874f1e2 | 3193 | case ovly_off: |
c5aa993b | 3194 | return 0; /* overlay debugging off */ |
d874f1e2 | 3195 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3196 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 3197 | there's really nothing useful to do here (can't really go auto) */ |
9216df95 UW |
3198 | gdbarch = get_objfile_arch (osect->objfile); |
3199 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3200 | { |
3201 | if (overlay_cache_invalid) | |
3202 | { | |
3203 | overlay_invalidate_all (); | |
3204 | overlay_cache_invalid = 0; | |
3205 | } | |
3206 | if (osect->ovly_mapped == -1) | |
9216df95 | 3207 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3208 | } |
3209 | /* fall thru to manual case */ | |
d874f1e2 | 3210 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3211 | return osect->ovly_mapped == 1; |
3212 | } | |
3213 | } | |
3214 | ||
c906108c SS |
3215 | /* Function: pc_in_unmapped_range |
3216 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3217 | ||
3218 | CORE_ADDR | |
714835d5 | 3219 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3220 | { |
714835d5 UW |
3221 | if (section_is_overlay (section)) |
3222 | { | |
3223 | bfd *abfd = section->objfile->obfd; | |
3224 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3225 | |
714835d5 UW |
3226 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3227 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3228 | CORE_ADDR offset = obj_section_offset (section); | |
3229 | ||
3230 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3231 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3232 | return 1; | |
3233 | } | |
c906108c | 3234 | |
c906108c SS |
3235 | return 0; |
3236 | } | |
3237 | ||
3238 | /* Function: pc_in_mapped_range | |
3239 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3240 | ||
3241 | CORE_ADDR | |
714835d5 | 3242 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3243 | { |
714835d5 UW |
3244 | if (section_is_overlay (section)) |
3245 | { | |
3246 | if (obj_section_addr (section) <= pc | |
3247 | && pc < obj_section_endaddr (section)) | |
3248 | return 1; | |
3249 | } | |
c906108c | 3250 | |
c906108c SS |
3251 | return 0; |
3252 | } | |
3253 | ||
9ec8e6a0 JB |
3254 | |
3255 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3256 | otherwise. */ | |
b9362cc7 | 3257 | static int |
714835d5 | 3258 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3259 | { |
714835d5 UW |
3260 | CORE_ADDR a_start = obj_section_addr (a); |
3261 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3262 | CORE_ADDR b_start = obj_section_addr (b); | |
3263 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3264 | |
3265 | return (a_start < b_end && b_start < a_end); | |
3266 | } | |
3267 | ||
c906108c SS |
3268 | /* Function: overlay_unmapped_address (PC, SECTION) |
3269 | Returns the address corresponding to PC in the unmapped (load) range. | |
3270 | May be the same as PC. */ | |
3271 | ||
3272 | CORE_ADDR | |
714835d5 | 3273 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3274 | { |
714835d5 UW |
3275 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3276 | { | |
3277 | bfd *abfd = section->objfile->obfd; | |
3278 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3279 | |
714835d5 UW |
3280 | return pc + bfd_section_lma (abfd, bfd_section) |
3281 | - bfd_section_vma (abfd, bfd_section); | |
3282 | } | |
c906108c SS |
3283 | |
3284 | return pc; | |
3285 | } | |
3286 | ||
3287 | /* Function: overlay_mapped_address (PC, SECTION) | |
3288 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3289 | May be the same as PC. */ | |
3290 | ||
3291 | CORE_ADDR | |
714835d5 | 3292 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3293 | { |
714835d5 UW |
3294 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3295 | { | |
3296 | bfd *abfd = section->objfile->obfd; | |
3297 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3298 | |
714835d5 UW |
3299 | return pc + bfd_section_vma (abfd, bfd_section) |
3300 | - bfd_section_lma (abfd, bfd_section); | |
3301 | } | |
c906108c SS |
3302 | |
3303 | return pc; | |
3304 | } | |
3305 | ||
3306 | ||
5417f6dc | 3307 | /* Function: symbol_overlayed_address |
c906108c SS |
3308 | Return one of two addresses (relative to the VMA or to the LMA), |
3309 | depending on whether the section is mapped or not. */ | |
3310 | ||
c5aa993b | 3311 | CORE_ADDR |
714835d5 | 3312 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3313 | { |
3314 | if (overlay_debugging) | |
3315 | { | |
3316 | /* If the symbol has no section, just return its regular address. */ | |
3317 | if (section == 0) | |
3318 | return address; | |
3319 | /* If the symbol's section is not an overlay, just return its address */ | |
3320 | if (!section_is_overlay (section)) | |
3321 | return address; | |
3322 | /* If the symbol's section is mapped, just return its address */ | |
3323 | if (section_is_mapped (section)) | |
3324 | return address; | |
3325 | /* | |
3326 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3327 | * then return its LOADED address rather than its vma address!! | |
3328 | */ | |
3329 | return overlay_unmapped_address (address, section); | |
3330 | } | |
3331 | return address; | |
3332 | } | |
3333 | ||
5417f6dc | 3334 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3335 | Return the best-match overlay section for PC: |
3336 | If PC matches a mapped overlay section's VMA, return that section. | |
3337 | Else if PC matches an unmapped section's VMA, return that section. | |
3338 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3339 | ||
714835d5 | 3340 | struct obj_section * |
fba45db2 | 3341 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3342 | { |
c5aa993b | 3343 | struct objfile *objfile; |
c906108c SS |
3344 | struct obj_section *osect, *best_match = NULL; |
3345 | ||
3346 | if (overlay_debugging) | |
3347 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3348 | if (section_is_overlay (osect)) |
c5aa993b | 3349 | { |
714835d5 | 3350 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3351 | { |
714835d5 UW |
3352 | if (section_is_mapped (osect)) |
3353 | return osect; | |
c5aa993b JM |
3354 | else |
3355 | best_match = osect; | |
3356 | } | |
714835d5 | 3357 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3358 | best_match = osect; |
3359 | } | |
714835d5 | 3360 | return best_match; |
c906108c SS |
3361 | } |
3362 | ||
3363 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3364 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3365 | currently marked as MAPPED, return that section. Else return NULL. */ |
3366 | ||
714835d5 | 3367 | struct obj_section * |
fba45db2 | 3368 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3369 | { |
c5aa993b | 3370 | struct objfile *objfile; |
c906108c SS |
3371 | struct obj_section *osect; |
3372 | ||
3373 | if (overlay_debugging) | |
3374 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3375 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3376 | return osect; | |
c906108c SS |
3377 | |
3378 | return NULL; | |
3379 | } | |
3380 | ||
3381 | /* Function: list_overlays_command | |
3382 | Print a list of mapped sections and their PC ranges */ | |
3383 | ||
3384 | void | |
fba45db2 | 3385 | list_overlays_command (char *args, int from_tty) |
c906108c | 3386 | { |
c5aa993b JM |
3387 | int nmapped = 0; |
3388 | struct objfile *objfile; | |
c906108c SS |
3389 | struct obj_section *osect; |
3390 | ||
3391 | if (overlay_debugging) | |
3392 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3393 | if (section_is_mapped (osect)) |
c5aa993b | 3394 | { |
5af949e3 | 3395 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3396 | const char *name; |
3397 | bfd_vma lma, vma; | |
3398 | int size; | |
3399 | ||
3400 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3401 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3402 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3403 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3404 | ||
3405 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3406 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3407 | puts_filtered (" - "); |
5af949e3 | 3408 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3409 | printf_filtered (", mapped at "); |
5af949e3 | 3410 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3411 | puts_filtered (" - "); |
5af949e3 | 3412 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3413 | puts_filtered ("\n"); |
3414 | ||
3415 | nmapped++; | |
3416 | } | |
c906108c | 3417 | if (nmapped == 0) |
a3f17187 | 3418 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3419 | } |
3420 | ||
3421 | /* Function: map_overlay_command | |
3422 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3423 | ||
3424 | void | |
fba45db2 | 3425 | map_overlay_command (char *args, int from_tty) |
c906108c | 3426 | { |
c5aa993b JM |
3427 | struct objfile *objfile, *objfile2; |
3428 | struct obj_section *sec, *sec2; | |
c906108c SS |
3429 | |
3430 | if (!overlay_debugging) | |
8a3fe4f8 | 3431 | error (_("\ |
515ad16c | 3432 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3433 | the 'overlay manual' command.")); |
c906108c SS |
3434 | |
3435 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3436 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3437 | |
3438 | /* First, find a section matching the user supplied argument */ | |
3439 | ALL_OBJSECTIONS (objfile, sec) | |
3440 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3441 | { |
3442 | /* Now, check to see if the section is an overlay. */ | |
714835d5 | 3443 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3444 | continue; /* not an overlay section */ |
3445 | ||
3446 | /* Mark the overlay as "mapped" */ | |
3447 | sec->ovly_mapped = 1; | |
3448 | ||
3449 | /* Next, make a pass and unmap any sections that are | |
3450 | overlapped by this new section: */ | |
3451 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3452 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3453 | { |
3454 | if (info_verbose) | |
a3f17187 | 3455 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3456 | bfd_section_name (objfile->obfd, |
3457 | sec2->the_bfd_section)); | |
3458 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3459 | } | |
3460 | return; | |
3461 | } | |
8a3fe4f8 | 3462 | error (_("No overlay section called %s"), args); |
c906108c SS |
3463 | } |
3464 | ||
3465 | /* Function: unmap_overlay_command | |
5417f6dc | 3466 | Mark the overlay section as unmapped |
c906108c SS |
3467 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3468 | ||
3469 | void | |
fba45db2 | 3470 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3471 | { |
c5aa993b | 3472 | struct objfile *objfile; |
c906108c SS |
3473 | struct obj_section *sec; |
3474 | ||
3475 | if (!overlay_debugging) | |
8a3fe4f8 | 3476 | error (_("\ |
515ad16c | 3477 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3478 | the 'overlay manual' command.")); |
c906108c SS |
3479 | |
3480 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3481 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3482 | |
3483 | /* First, find a section matching the user supplied argument */ | |
3484 | ALL_OBJSECTIONS (objfile, sec) | |
3485 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3486 | { |
3487 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3488 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3489 | sec->ovly_mapped = 0; |
3490 | return; | |
3491 | } | |
8a3fe4f8 | 3492 | error (_("No overlay section called %s"), args); |
c906108c SS |
3493 | } |
3494 | ||
3495 | /* Function: overlay_auto_command | |
3496 | A utility command to turn on overlay debugging. | |
3497 | Possibly this should be done via a set/show command. */ | |
3498 | ||
3499 | static void | |
fba45db2 | 3500 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3501 | { |
d874f1e2 | 3502 | overlay_debugging = ovly_auto; |
1900040c | 3503 | enable_overlay_breakpoints (); |
c906108c | 3504 | if (info_verbose) |
a3f17187 | 3505 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3506 | } |
3507 | ||
3508 | /* Function: overlay_manual_command | |
3509 | A utility command to turn on overlay debugging. | |
3510 | Possibly this should be done via a set/show command. */ | |
3511 | ||
3512 | static void | |
fba45db2 | 3513 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3514 | { |
d874f1e2 | 3515 | overlay_debugging = ovly_on; |
1900040c | 3516 | disable_overlay_breakpoints (); |
c906108c | 3517 | if (info_verbose) |
a3f17187 | 3518 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3519 | } |
3520 | ||
3521 | /* Function: overlay_off_command | |
3522 | A utility command to turn on overlay debugging. | |
3523 | Possibly this should be done via a set/show command. */ | |
3524 | ||
3525 | static void | |
fba45db2 | 3526 | overlay_off_command (char *args, int from_tty) |
c906108c | 3527 | { |
d874f1e2 | 3528 | overlay_debugging = ovly_off; |
1900040c | 3529 | disable_overlay_breakpoints (); |
c906108c | 3530 | if (info_verbose) |
a3f17187 | 3531 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3532 | } |
3533 | ||
3534 | static void | |
fba45db2 | 3535 | overlay_load_command (char *args, int from_tty) |
c906108c | 3536 | { |
e17c207e UW |
3537 | struct gdbarch *gdbarch = get_current_arch (); |
3538 | ||
3539 | if (gdbarch_overlay_update_p (gdbarch)) | |
3540 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3541 | else |
8a3fe4f8 | 3542 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3543 | } |
3544 | ||
3545 | /* Function: overlay_command | |
3546 | A place-holder for a mis-typed command */ | |
3547 | ||
3548 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3549 | struct cmd_list_element *overlaylist; | |
3550 | ||
3551 | static void | |
fba45db2 | 3552 | overlay_command (char *args, int from_tty) |
c906108c | 3553 | { |
c5aa993b | 3554 | printf_unfiltered |
c906108c SS |
3555 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3556 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3557 | } | |
3558 | ||
3559 | ||
3560 | /* Target Overlays for the "Simplest" overlay manager: | |
3561 | ||
5417f6dc RM |
3562 | This is GDB's default target overlay layer. It works with the |
3563 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3564 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3565 | so targets that use a different runtime overlay manager can |
c906108c SS |
3566 | substitute their own overlay_update function and take over the |
3567 | function pointer. | |
3568 | ||
3569 | The overlay_update function pokes around in the target's data structures | |
3570 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3571 | this information. | |
3572 | ||
3573 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3574 | unsigned _novlys; /# number of overlay sections #/ |
3575 | unsigned _ovly_table[_novlys][4] = { | |
3576 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3577 | {..., ..., ..., ...}, | |
3578 | } | |
3579 | unsigned _novly_regions; /# number of overlay regions #/ | |
3580 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3581 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3582 | {..., ..., ...}, | |
3583 | } | |
c906108c SS |
3584 | These functions will attempt to update GDB's mappedness state in the |
3585 | symbol section table, based on the target's mappedness state. | |
3586 | ||
3587 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3588 | attempt to detect when the cached copy is invalidated. The main | |
3589 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3590 | the cached table and re-reads only the entry for that section from | |
3591 | the target (whenever possible). | |
3592 | */ | |
3593 | ||
3594 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3595 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3596 | #if 0 |
c5aa993b | 3597 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3598 | #endif |
c5aa993b | 3599 | static unsigned cache_novlys = 0; |
c906108c | 3600 | #if 0 |
c5aa993b | 3601 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3602 | #endif |
3603 | static CORE_ADDR cache_ovly_table_base = 0; | |
3604 | #if 0 | |
3605 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3606 | #endif | |
c5aa993b JM |
3607 | enum ovly_index |
3608 | { | |
3609 | VMA, SIZE, LMA, MAPPED | |
3610 | }; | |
c906108c SS |
3611 | |
3612 | /* Throw away the cached copy of _ovly_table */ | |
3613 | static void | |
fba45db2 | 3614 | simple_free_overlay_table (void) |
c906108c SS |
3615 | { |
3616 | if (cache_ovly_table) | |
b8c9b27d | 3617 | xfree (cache_ovly_table); |
c5aa993b | 3618 | cache_novlys = 0; |
c906108c SS |
3619 | cache_ovly_table = NULL; |
3620 | cache_ovly_table_base = 0; | |
3621 | } | |
3622 | ||
3623 | #if 0 | |
3624 | /* Throw away the cached copy of _ovly_region_table */ | |
3625 | static void | |
fba45db2 | 3626 | simple_free_overlay_region_table (void) |
c906108c SS |
3627 | { |
3628 | if (cache_ovly_region_table) | |
b8c9b27d | 3629 | xfree (cache_ovly_region_table); |
c5aa993b | 3630 | cache_novly_regions = 0; |
c906108c SS |
3631 | cache_ovly_region_table = NULL; |
3632 | cache_ovly_region_table_base = 0; | |
3633 | } | |
3634 | #endif | |
3635 | ||
9216df95 | 3636 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c906108c SS |
3637 | Convert to host order. int LEN is number of ints */ |
3638 | static void | |
9216df95 | 3639 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3640 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3641 | { |
34c0bd93 | 3642 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3643 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3644 | int i; |
c906108c | 3645 | |
9216df95 | 3646 | read_memory (memaddr, buf, len * size); |
c906108c | 3647 | for (i = 0; i < len; i++) |
e17a4113 | 3648 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3649 | } |
3650 | ||
3651 | /* Find and grab a copy of the target _ovly_table | |
3652 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3653 | static int |
fba45db2 | 3654 | simple_read_overlay_table (void) |
c906108c | 3655 | { |
0d43edd1 | 3656 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3657 | struct gdbarch *gdbarch; |
3658 | int word_size; | |
e17a4113 | 3659 | enum bfd_endian byte_order; |
c906108c SS |
3660 | |
3661 | simple_free_overlay_table (); | |
9b27852e | 3662 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3663 | if (! novlys_msym) |
c906108c | 3664 | { |
8a3fe4f8 | 3665 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3666 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3667 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3668 | return 0; |
c906108c | 3669 | } |
0d43edd1 | 3670 | |
9b27852e | 3671 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3672 | if (! ovly_table_msym) |
3673 | { | |
8a3fe4f8 | 3674 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3675 | "`_ovly_table' array\n" |
8a3fe4f8 | 3676 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3677 | return 0; |
3678 | } | |
3679 | ||
9216df95 UW |
3680 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3681 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3682 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3683 | |
e17a4113 UW |
3684 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3685 | 4, byte_order); | |
0d43edd1 JB |
3686 | cache_ovly_table |
3687 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3688 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3689 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3690 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3691 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3692 | |
c5aa993b | 3693 | return 1; /* SUCCESS */ |
c906108c SS |
3694 | } |
3695 | ||
3696 | #if 0 | |
3697 | /* Find and grab a copy of the target _ovly_region_table | |
3698 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3699 | static int |
fba45db2 | 3700 | simple_read_overlay_region_table (void) |
c906108c SS |
3701 | { |
3702 | struct minimal_symbol *msym; | |
e17a4113 UW |
3703 | struct gdbarch *gdbarch; |
3704 | int word_size; | |
3705 | enum bfd_endian byte_order; | |
c906108c SS |
3706 | |
3707 | simple_free_overlay_region_table (); | |
9b27852e | 3708 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
e17a4113 | 3709 | if (msym == NULL) |
c5aa993b | 3710 | return 0; /* failure */ |
e17a4113 UW |
3711 | |
3712 | gdbarch = get_objfile_arch (msymbol_objfile (msym)); | |
3713 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
3714 | byte_order = gdbarch_byte_order (gdbarch); | |
3715 | ||
3716 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), | |
3717 | 4, byte_order); | |
3718 | ||
c906108c SS |
3719 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3720 | if (cache_ovly_region_table != NULL) | |
3721 | { | |
9b27852e | 3722 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3723 | if (msym != NULL) |
3724 | { | |
3725 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3726 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3727 | (unsigned int *) cache_ovly_region_table, |
e17a4113 UW |
3728 | cache_novly_regions * 3, |
3729 | word_size, byte_order); | |
c906108c | 3730 | } |
c5aa993b JM |
3731 | else |
3732 | return 0; /* failure */ | |
c906108c | 3733 | } |
c5aa993b JM |
3734 | else |
3735 | return 0; /* failure */ | |
3736 | return 1; /* SUCCESS */ | |
c906108c SS |
3737 | } |
3738 | #endif | |
3739 | ||
5417f6dc | 3740 | /* Function: simple_overlay_update_1 |
c906108c SS |
3741 | A helper function for simple_overlay_update. Assuming a cached copy |
3742 | of _ovly_table exists, look through it to find an entry whose vma, | |
3743 | lma and size match those of OSECT. Re-read the entry and make sure | |
3744 | it still matches OSECT (else the table may no longer be valid). | |
3745 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3746 | success, 0 for failure. */ | |
3747 | ||
3748 | static int | |
fba45db2 | 3749 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3750 | { |
3751 | int i, size; | |
fbd35540 MS |
3752 | bfd *obfd = osect->objfile->obfd; |
3753 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3754 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3755 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3756 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3757 | |
2c500098 | 3758 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3759 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3760 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3761 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3762 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3763 | { |
9216df95 UW |
3764 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3765 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3766 | 4, word_size, byte_order); |
fbd35540 MS |
3767 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3768 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3769 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3770 | { |
3771 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3772 | return 1; | |
3773 | } | |
fbd35540 | 3774 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3775 | return 0; |
3776 | } | |
3777 | return 0; | |
3778 | } | |
3779 | ||
3780 | /* Function: simple_overlay_update | |
5417f6dc RM |
3781 | If OSECT is NULL, then update all sections' mapped state |
3782 | (after re-reading the entire target _ovly_table). | |
3783 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3784 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3785 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3786 | re-read the entire cache, and go ahead and update all sections. */ |
3787 | ||
1c772458 | 3788 | void |
fba45db2 | 3789 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3790 | { |
c5aa993b | 3791 | struct objfile *objfile; |
c906108c SS |
3792 | |
3793 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3794 | if (osect) | |
3795 | /* Have we got a cached copy of the target's overlay table? */ | |
3796 | if (cache_ovly_table != NULL) | |
3797 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3798 | if (cache_ovly_table_base == |
9b27852e | 3799 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3800 | /* Then go ahead and try to look up this single section in the cache */ |
3801 | if (simple_overlay_update_1 (osect)) | |
3802 | /* Found it! We're done. */ | |
3803 | return; | |
3804 | ||
3805 | /* Cached table no good: need to read the entire table anew. | |
3806 | Or else we want all the sections, in which case it's actually | |
3807 | more efficient to read the whole table in one block anyway. */ | |
3808 | ||
0d43edd1 JB |
3809 | if (! simple_read_overlay_table ()) |
3810 | return; | |
3811 | ||
c906108c SS |
3812 | /* Now may as well update all sections, even if only one was requested. */ |
3813 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3814 | if (section_is_overlay (osect)) |
c5aa993b JM |
3815 | { |
3816 | int i, size; | |
fbd35540 MS |
3817 | bfd *obfd = osect->objfile->obfd; |
3818 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3819 | |
2c500098 | 3820 | size = bfd_get_section_size (bsect); |
c5aa993b | 3821 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3822 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3823 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3824 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3825 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3826 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3827 | break; /* finished with inner for loop: break out */ | |
3828 | } | |
3829 | } | |
c906108c SS |
3830 | } |
3831 | ||
086df311 DJ |
3832 | /* Set the output sections and output offsets for section SECTP in |
3833 | ABFD. The relocation code in BFD will read these offsets, so we | |
3834 | need to be sure they're initialized. We map each section to itself, | |
3835 | with no offset; this means that SECTP->vma will be honored. */ | |
3836 | ||
3837 | static void | |
3838 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3839 | { | |
3840 | sectp->output_section = sectp; | |
3841 | sectp->output_offset = 0; | |
3842 | } | |
3843 | ||
3844 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3845 | contents are stored in BUF if it is non-NULL, or returned in a | |
3846 | malloc'd buffer otherwise. | |
3847 | ||
3848 | For some platforms and debug info formats, shared libraries contain | |
3849 | relocations against the debug sections (particularly for DWARF-2; | |
3850 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3851 | the version of the linker in use). Also, ELF object files naturally | |
3852 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3853 | the relocations in order to get the locations of symbols correct. |
3854 | Another example that may require relocation processing, is the | |
3855 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3856 | debug section. */ | |
086df311 DJ |
3857 | |
3858 | bfd_byte * | |
3859 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3860 | { | |
065a2c74 | 3861 | /* We're only interested in sections with relocation |
086df311 DJ |
3862 | information. */ |
3863 | if ((sectp->flags & SEC_RELOC) == 0) | |
3864 | return NULL; | |
086df311 DJ |
3865 | |
3866 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3867 | all sections begin at 0. */ | |
3868 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3869 | ||
97606a13 | 3870 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3871 | } |
c906108c | 3872 | |
31d99776 DJ |
3873 | struct symfile_segment_data * |
3874 | get_symfile_segment_data (bfd *abfd) | |
3875 | { | |
3876 | struct sym_fns *sf = find_sym_fns (abfd); | |
3877 | ||
3878 | if (sf == NULL) | |
3879 | return NULL; | |
3880 | ||
3881 | return sf->sym_segments (abfd); | |
3882 | } | |
3883 | ||
3884 | void | |
3885 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3886 | { | |
3887 | xfree (data->segment_bases); | |
3888 | xfree (data->segment_sizes); | |
3889 | xfree (data->segment_info); | |
3890 | xfree (data); | |
3891 | } | |
3892 | ||
28c32713 JB |
3893 | |
3894 | /* Given: | |
3895 | - DATA, containing segment addresses from the object file ABFD, and | |
3896 | the mapping from ABFD's sections onto the segments that own them, | |
3897 | and | |
3898 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3899 | segment addresses reported by the target, | |
3900 | store the appropriate offsets for each section in OFFSETS. | |
3901 | ||
3902 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3903 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3904 | ||
8d385431 DJ |
3905 | If there are more entries, then ignore the extra. The target may |
3906 | not be able to distinguish between an empty data segment and a | |
3907 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3908 | int |
3909 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3910 | struct section_offsets *offsets, | |
3911 | int num_segment_bases, | |
3912 | const CORE_ADDR *segment_bases) | |
3913 | { | |
3914 | int i; | |
3915 | asection *sect; | |
3916 | ||
28c32713 JB |
3917 | /* It doesn't make sense to call this function unless you have some |
3918 | segment base addresses. */ | |
3919 | gdb_assert (segment_bases > 0); | |
3920 | ||
31d99776 DJ |
3921 | /* If we do not have segment mappings for the object file, we |
3922 | can not relocate it by segments. */ | |
3923 | gdb_assert (data != NULL); | |
3924 | gdb_assert (data->num_segments > 0); | |
3925 | ||
31d99776 DJ |
3926 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3927 | { | |
31d99776 DJ |
3928 | int which = data->segment_info[i]; |
3929 | ||
28c32713 JB |
3930 | gdb_assert (0 <= which && which <= data->num_segments); |
3931 | ||
3932 | /* Don't bother computing offsets for sections that aren't | |
3933 | loaded as part of any segment. */ | |
3934 | if (! which) | |
3935 | continue; | |
3936 | ||
3937 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3938 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3939 | if (which > num_segment_bases) |
28c32713 | 3940 | which = num_segment_bases; |
31d99776 | 3941 | |
28c32713 JB |
3942 | offsets->offsets[i] = (segment_bases[which - 1] |
3943 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3944 | } |
3945 | ||
3946 | return 1; | |
3947 | } | |
3948 | ||
3949 | static void | |
3950 | symfile_find_segment_sections (struct objfile *objfile) | |
3951 | { | |
3952 | bfd *abfd = objfile->obfd; | |
3953 | int i; | |
3954 | asection *sect; | |
3955 | struct symfile_segment_data *data; | |
3956 | ||
3957 | data = get_symfile_segment_data (objfile->obfd); | |
3958 | if (data == NULL) | |
3959 | return; | |
3960 | ||
3961 | if (data->num_segments != 1 && data->num_segments != 2) | |
3962 | { | |
3963 | free_symfile_segment_data (data); | |
3964 | return; | |
3965 | } | |
3966 | ||
3967 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3968 | { | |
3969 | CORE_ADDR vma; | |
3970 | int which = data->segment_info[i]; | |
3971 | ||
3972 | if (which == 1) | |
3973 | { | |
3974 | if (objfile->sect_index_text == -1) | |
3975 | objfile->sect_index_text = sect->index; | |
3976 | ||
3977 | if (objfile->sect_index_rodata == -1) | |
3978 | objfile->sect_index_rodata = sect->index; | |
3979 | } | |
3980 | else if (which == 2) | |
3981 | { | |
3982 | if (objfile->sect_index_data == -1) | |
3983 | objfile->sect_index_data = sect->index; | |
3984 | ||
3985 | if (objfile->sect_index_bss == -1) | |
3986 | objfile->sect_index_bss = sect->index; | |
3987 | } | |
3988 | } | |
3989 | ||
3990 | free_symfile_segment_data (data); | |
3991 | } | |
3992 | ||
c906108c | 3993 | void |
fba45db2 | 3994 | _initialize_symfile (void) |
c906108c SS |
3995 | { |
3996 | struct cmd_list_element *c; | |
c5aa993b | 3997 | |
1a966eab AC |
3998 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3999 | Load symbol table from executable file FILE.\n\ | |
c906108c | 4000 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 4001 | to execute."), &cmdlist); |
5ba2abeb | 4002 | set_cmd_completer (c, filename_completer); |
c906108c | 4003 | |
1a966eab | 4004 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 4005 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 4006 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 4007 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
4008 | The optional arguments are section-name section-address pairs and\n\ |
4009 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 4010 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 4011 | &cmdlist); |
5ba2abeb | 4012 | set_cmd_completer (c, filename_completer); |
c906108c | 4013 | |
1a966eab AC |
4014 | c = add_cmd ("load", class_files, load_command, _("\ |
4015 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
4016 | for access from GDB.\n\ |
4017 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 4018 | set_cmd_completer (c, filename_completer); |
c906108c | 4019 | |
5bf193a2 AC |
4020 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
4021 | &symbol_reloading, _("\ | |
4022 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
4023 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
4024 | NULL, | |
920d2a44 | 4025 | show_symbol_reloading, |
5bf193a2 | 4026 | &setlist, &showlist); |
c906108c | 4027 | |
c5aa993b | 4028 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 4029 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
4030 | "overlay ", 0, &cmdlist); |
4031 | ||
4032 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
4033 | add_com_alias ("ov", "overlay", class_alias, 1); | |
4034 | ||
c5aa993b | 4035 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 4036 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 4037 | |
c5aa993b | 4038 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 4039 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 4040 | |
c5aa993b | 4041 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 4042 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 4043 | |
c5aa993b | 4044 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 4045 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 4046 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 4047 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 4048 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 4049 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 4050 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 4051 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
4052 | |
4053 | /* Filename extension to source language lookup table: */ | |
4054 | init_filename_language_table (); | |
26c41df3 AC |
4055 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4056 | &ext_args, _("\ | |
4057 | Set mapping between filename extension and source language."), _("\ | |
4058 | Show mapping between filename extension and source language."), _("\ | |
4059 | Usage: set extension-language .foo bar"), | |
4060 | set_ext_lang_command, | |
920d2a44 | 4061 | show_ext_args, |
26c41df3 | 4062 | &setlist, &showlist); |
c906108c | 4063 | |
c5aa993b | 4064 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4065 | _("All filename extensions associated with a source language.")); |
917317f4 | 4066 | |
525226b5 AC |
4067 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4068 | &debug_file_directory, _("\ | |
24ddea62 JK |
4069 | Set the directories where separate debug symbols are searched for."), _("\ |
4070 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
4071 | Separate debug symbols are first searched for in the same\n\ |
4072 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4073 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 4074 | each global debug-file-directory component prepended."), |
525226b5 | 4075 | NULL, |
920d2a44 | 4076 | show_debug_file_directory, |
525226b5 | 4077 | &setlist, &showlist); |
c906108c | 4078 | } |