Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | |
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 | |
13 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
23 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
25 | |
26 | #include "defs.h" | |
086df311 | 27 | #include "bfdlink.h" |
c906108c SS |
28 | #include "symtab.h" |
29 | #include "gdbtypes.h" | |
30 | #include "gdbcore.h" | |
31 | #include "frame.h" | |
32 | #include "target.h" | |
33 | #include "value.h" | |
34 | #include "symfile.h" | |
35 | #include "objfiles.h" | |
0378c332 | 36 | #include "source.h" |
c906108c SS |
37 | #include "gdbcmd.h" |
38 | #include "breakpoint.h" | |
39 | #include "language.h" | |
40 | #include "complaints.h" | |
41 | #include "demangle.h" | |
c5aa993b | 42 | #include "inferior.h" /* for write_pc */ |
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" |
c906108c | 56 | |
c906108c SS |
57 | #include <sys/types.h> |
58 | #include <fcntl.h> | |
59 | #include "gdb_string.h" | |
60 | #include "gdb_stat.h" | |
61 | #include <ctype.h> | |
62 | #include <time.h> | |
2b71414d | 63 | #include <sys/time.h> |
c906108c | 64 | |
c906108c | 65 | |
9a4105ab AC |
66 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
67 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
68 | unsigned long section_sent, |
69 | unsigned long section_size, | |
70 | unsigned long total_sent, | |
c2d11a7d | 71 | unsigned long total_size); |
769d7dc4 AC |
72 | void (*deprecated_pre_add_symbol_hook) (const char *); |
73 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 74 | |
74b7792f AC |
75 | static void clear_symtab_users_cleanup (void *ignore); |
76 | ||
c906108c | 77 | /* Global variables owned by this file */ |
c5aa993b | 78 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 79 | |
c906108c SS |
80 | /* External variables and functions referenced. */ |
81 | ||
a14ed312 | 82 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
83 | |
84 | /* Functions this file defines */ | |
85 | ||
86 | #if 0 | |
a14ed312 KB |
87 | static int simple_read_overlay_region_table (void); |
88 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
89 | #endif |
90 | ||
a14ed312 | 91 | static void set_initial_language (void); |
c906108c | 92 | |
a14ed312 | 93 | static void load_command (char *, int); |
c906108c | 94 | |
d7db6da9 FN |
95 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
96 | ||
a14ed312 | 97 | static void add_symbol_file_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 100 | |
5b5d99cf JB |
101 | static void reread_separate_symbols (struct objfile *objfile); |
102 | ||
a14ed312 | 103 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 104 | |
a14ed312 | 105 | bfd *symfile_bfd_open (char *); |
c906108c | 106 | |
0e931cf0 JB |
107 | int get_section_index (struct objfile *, char *); |
108 | ||
a14ed312 | 109 | static void find_sym_fns (struct objfile *); |
c906108c | 110 | |
a14ed312 | 111 | static void decrement_reading_symtab (void *); |
c906108c | 112 | |
a14ed312 | 113 | static void overlay_invalidate_all (void); |
c906108c | 114 | |
a14ed312 | 115 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 116 | |
a14ed312 | 117 | void list_overlays_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | void map_overlay_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | void unmap_overlay_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void overlay_auto_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void overlay_manual_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static void overlay_off_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | static void overlay_load_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | static void overlay_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void simple_free_overlay_table (void); |
c906108c | 134 | |
a14ed312 | 135 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 136 | |
a14ed312 | 137 | static int simple_read_overlay_table (void); |
c906108c | 138 | |
a14ed312 | 139 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 140 | |
a14ed312 | 141 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 142 | |
a14ed312 | 143 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 144 | |
5b5d99cf JB |
145 | static char *find_separate_debug_file (struct objfile *objfile); |
146 | ||
a14ed312 | 147 | static void init_filename_language_table (void); |
392a587b | 148 | |
a14ed312 | 149 | void _initialize_symfile (void); |
c906108c SS |
150 | |
151 | /* List of all available sym_fns. On gdb startup, each object file reader | |
152 | calls add_symtab_fns() to register information on each format it is | |
153 | prepared to read. */ | |
154 | ||
155 | static struct sym_fns *symtab_fns = NULL; | |
156 | ||
157 | /* Flag for whether user will be reloading symbols multiple times. | |
158 | Defaults to ON for VxWorks, otherwise OFF. */ | |
159 | ||
160 | #ifdef SYMBOL_RELOADING_DEFAULT | |
161 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
162 | #else | |
163 | int symbol_reloading = 0; | |
164 | #endif | |
920d2a44 AC |
165 | static void |
166 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
167 | struct cmd_list_element *c, const char *value) | |
168 | { | |
169 | fprintf_filtered (file, _("\ | |
170 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
171 | value); | |
172 | } | |
173 | ||
c906108c | 174 | |
b7209cb4 FF |
175 | /* If non-zero, shared library symbols will be added automatically |
176 | when the inferior is created, new libraries are loaded, or when | |
177 | attaching to the inferior. This is almost always what users will | |
178 | want to have happen; but for very large programs, the startup time | |
179 | will be excessive, and so if this is a problem, the user can clear | |
180 | this flag and then add the shared library symbols as needed. Note | |
181 | that there is a potential for confusion, since if the shared | |
c906108c | 182 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 183 | report all the functions that are actually present. */ |
c906108c SS |
184 | |
185 | int auto_solib_add = 1; | |
b7209cb4 FF |
186 | |
187 | /* For systems that support it, a threshold size in megabytes. If | |
188 | automatically adding a new library's symbol table to those already | |
189 | known to the debugger would cause the total shared library symbol | |
190 | size to exceed this threshhold, then the shlib's symbols are not | |
191 | added. The threshold is ignored if the user explicitly asks for a | |
192 | shlib to be added, such as when using the "sharedlibrary" | |
193 | command. */ | |
194 | ||
195 | int auto_solib_limit; | |
c906108c | 196 | \f |
c5aa993b | 197 | |
0fe19209 DC |
198 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
199 | for the comparison. */ | |
c906108c SS |
200 | |
201 | static int | |
0cd64fe2 | 202 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 203 | { |
0fe19209 DC |
204 | struct partial_symbol *const *s1 = s1p; |
205 | struct partial_symbol *const *s2 = s2p; | |
206 | ||
4725b721 PH |
207 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
208 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
209 | } |
210 | ||
211 | void | |
fba45db2 | 212 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
213 | { |
214 | /* Sort the global list; don't sort the static list */ | |
215 | ||
c5aa993b JM |
216 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
217 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
218 | compare_psymbols); |
219 | } | |
220 | ||
c906108c SS |
221 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
222 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
223 | Note that the string at PTR does not have to be null terminated, I.E. it | |
224 | may be part of a larger string and we are only saving a substring. */ | |
225 | ||
226 | char * | |
63ca651f | 227 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 228 | { |
52f0bd74 | 229 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
230 | /* Open-coded memcpy--saves function call time. These strings are usually |
231 | short. FIXME: Is this really still true with a compiler that can | |
232 | inline memcpy? */ | |
233 | { | |
aa1ee363 AC |
234 | const char *p1 = ptr; |
235 | char *p2 = p; | |
63ca651f | 236 | const char *end = ptr + size; |
c906108c SS |
237 | while (p1 != end) |
238 | *p2++ = *p1++; | |
239 | } | |
240 | p[size] = 0; | |
241 | return p; | |
242 | } | |
243 | ||
244 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
245 | in the obstack pointed to by OBSTACKP. */ | |
246 | ||
247 | char * | |
fba45db2 KB |
248 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
249 | const char *s3) | |
c906108c | 250 | { |
52f0bd74 AC |
251 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
252 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
253 | strcpy (val, s1); |
254 | strcat (val, s2); | |
255 | strcat (val, s3); | |
256 | return val; | |
257 | } | |
258 | ||
259 | /* True if we are nested inside psymtab_to_symtab. */ | |
260 | ||
261 | int currently_reading_symtab = 0; | |
262 | ||
263 | static void | |
fba45db2 | 264 | decrement_reading_symtab (void *dummy) |
c906108c SS |
265 | { |
266 | currently_reading_symtab--; | |
267 | } | |
268 | ||
269 | /* Get the symbol table that corresponds to a partial_symtab. | |
270 | This is fast after the first time you do it. In fact, there | |
271 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
272 | case inline. */ | |
273 | ||
274 | struct symtab * | |
aa1ee363 | 275 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
276 | { |
277 | /* If it's been looked up before, return it. */ | |
278 | if (pst->symtab) | |
279 | return pst->symtab; | |
280 | ||
281 | /* If it has not yet been read in, read it. */ | |
282 | if (!pst->readin) | |
c5aa993b | 283 | { |
c906108c SS |
284 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
285 | currently_reading_symtab++; | |
286 | (*pst->read_symtab) (pst); | |
287 | do_cleanups (back_to); | |
288 | } | |
289 | ||
290 | return pst->symtab; | |
291 | } | |
292 | ||
5417f6dc RM |
293 | /* Remember the lowest-addressed loadable section we've seen. |
294 | This function is called via bfd_map_over_sections. | |
c906108c SS |
295 | |
296 | In case of equal vmas, the section with the largest size becomes the | |
297 | lowest-addressed loadable section. | |
298 | ||
299 | If the vmas and sizes are equal, the last section is considered the | |
300 | lowest-addressed loadable section. */ | |
301 | ||
302 | void | |
4efb68b1 | 303 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 304 | { |
c5aa993b | 305 | asection **lowest = (asection **) obj; |
c906108c SS |
306 | |
307 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
308 | return; | |
309 | if (!*lowest) | |
310 | *lowest = sect; /* First loadable section */ | |
311 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
312 | *lowest = sect; /* A lower loadable section */ | |
313 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
314 | && (bfd_section_size (abfd, (*lowest)) | |
315 | <= bfd_section_size (abfd, sect))) | |
316 | *lowest = sect; | |
317 | } | |
318 | ||
a39a16c4 MM |
319 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
320 | ||
321 | struct section_addr_info * | |
322 | alloc_section_addr_info (size_t num_sections) | |
323 | { | |
324 | struct section_addr_info *sap; | |
325 | size_t size; | |
326 | ||
327 | size = (sizeof (struct section_addr_info) | |
328 | + sizeof (struct other_sections) * (num_sections - 1)); | |
329 | sap = (struct section_addr_info *) xmalloc (size); | |
330 | memset (sap, 0, size); | |
331 | sap->num_sections = num_sections; | |
332 | ||
333 | return sap; | |
334 | } | |
62557bbc | 335 | |
7b90c3f9 JB |
336 | |
337 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
338 | any, are also freshly allocated copies of those in ADDRS. */ | |
339 | struct section_addr_info * | |
340 | copy_section_addr_info (struct section_addr_info *addrs) | |
341 | { | |
342 | struct section_addr_info *copy | |
343 | = alloc_section_addr_info (addrs->num_sections); | |
344 | int i; | |
345 | ||
346 | copy->num_sections = addrs->num_sections; | |
347 | for (i = 0; i < addrs->num_sections; i++) | |
348 | { | |
349 | copy->other[i].addr = addrs->other[i].addr; | |
350 | if (addrs->other[i].name) | |
351 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
352 | else | |
353 | copy->other[i].name = NULL; | |
354 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
355 | } | |
356 | ||
357 | return copy; | |
358 | } | |
359 | ||
360 | ||
361 | ||
62557bbc KB |
362 | /* Build (allocate and populate) a section_addr_info struct from |
363 | an existing section table. */ | |
364 | ||
365 | extern struct section_addr_info * | |
366 | build_section_addr_info_from_section_table (const struct section_table *start, | |
367 | const struct section_table *end) | |
368 | { | |
369 | struct section_addr_info *sap; | |
370 | const struct section_table *stp; | |
371 | int oidx; | |
372 | ||
a39a16c4 | 373 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
374 | |
375 | for (stp = start, oidx = 0; stp != end; stp++) | |
376 | { | |
5417f6dc | 377 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 378 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 379 | && oidx < end - start) |
62557bbc KB |
380 | { |
381 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 382 | sap->other[oidx].name |
fbd35540 | 383 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
384 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
385 | oidx++; | |
386 | } | |
387 | } | |
388 | ||
389 | return sap; | |
390 | } | |
391 | ||
392 | ||
393 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
394 | ||
395 | extern void | |
396 | free_section_addr_info (struct section_addr_info *sap) | |
397 | { | |
398 | int idx; | |
399 | ||
a39a16c4 | 400 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 401 | if (sap->other[idx].name) |
b8c9b27d KB |
402 | xfree (sap->other[idx].name); |
403 | xfree (sap); | |
62557bbc KB |
404 | } |
405 | ||
406 | ||
e8289572 JB |
407 | /* Initialize OBJFILE's sect_index_* members. */ |
408 | static void | |
409 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 410 | { |
e8289572 | 411 | asection *sect; |
c906108c | 412 | int i; |
5417f6dc | 413 | |
b8fbeb18 | 414 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 415 | if (sect) |
b8fbeb18 EZ |
416 | objfile->sect_index_text = sect->index; |
417 | ||
418 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 419 | if (sect) |
b8fbeb18 EZ |
420 | objfile->sect_index_data = sect->index; |
421 | ||
422 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 423 | if (sect) |
b8fbeb18 EZ |
424 | objfile->sect_index_bss = sect->index; |
425 | ||
426 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 427 | if (sect) |
b8fbeb18 EZ |
428 | objfile->sect_index_rodata = sect->index; |
429 | ||
bbcd32ad FF |
430 | /* This is where things get really weird... We MUST have valid |
431 | indices for the various sect_index_* members or gdb will abort. | |
432 | So if for example, there is no ".text" section, we have to | |
433 | accomodate that. Except when explicitly adding symbol files at | |
434 | some address, section_offsets contains nothing but zeros, so it | |
435 | doesn't matter which slot in section_offsets the individual | |
436 | sect_index_* members index into. So if they are all zero, it is | |
437 | safe to just point all the currently uninitialized indices to the | |
438 | first slot. */ | |
439 | ||
440 | for (i = 0; i < objfile->num_sections; i++) | |
441 | { | |
442 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
443 | { | |
444 | break; | |
445 | } | |
446 | } | |
447 | if (i == objfile->num_sections) | |
448 | { | |
449 | if (objfile->sect_index_text == -1) | |
450 | objfile->sect_index_text = 0; | |
451 | if (objfile->sect_index_data == -1) | |
452 | objfile->sect_index_data = 0; | |
453 | if (objfile->sect_index_bss == -1) | |
454 | objfile->sect_index_bss = 0; | |
455 | if (objfile->sect_index_rodata == -1) | |
456 | objfile->sect_index_rodata = 0; | |
457 | } | |
b8fbeb18 | 458 | } |
c906108c | 459 | |
c1bd25fd DJ |
460 | /* The arguments to place_section. */ |
461 | ||
462 | struct place_section_arg | |
463 | { | |
464 | struct section_offsets *offsets; | |
465 | CORE_ADDR lowest; | |
466 | }; | |
467 | ||
468 | /* Find a unique offset to use for loadable section SECT if | |
469 | the user did not provide an offset. */ | |
470 | ||
471 | void | |
472 | place_section (bfd *abfd, asection *sect, void *obj) | |
473 | { | |
474 | struct place_section_arg *arg = obj; | |
475 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
476 | int done; | |
3bd72c6f | 477 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 478 | |
2711e456 DJ |
479 | /* We are only interested in allocated sections. */ |
480 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
481 | return; |
482 | ||
483 | /* If the user specified an offset, honor it. */ | |
484 | if (offsets[sect->index] != 0) | |
485 | return; | |
486 | ||
487 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
488 | start_addr = (arg->lowest + align - 1) & -align; |
489 | ||
c1bd25fd DJ |
490 | do { |
491 | asection *cur_sec; | |
c1bd25fd | 492 | |
c1bd25fd DJ |
493 | done = 1; |
494 | ||
495 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
496 | { | |
497 | int indx = cur_sec->index; | |
498 | CORE_ADDR cur_offset; | |
499 | ||
500 | /* We don't need to compare against ourself. */ | |
501 | if (cur_sec == sect) | |
502 | continue; | |
503 | ||
2711e456 DJ |
504 | /* We can only conflict with allocated sections. */ |
505 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
506 | continue; |
507 | ||
508 | /* If the section offset is 0, either the section has not been placed | |
509 | yet, or it was the lowest section placed (in which case LOWEST | |
510 | will be past its end). */ | |
511 | if (offsets[indx] == 0) | |
512 | continue; | |
513 | ||
514 | /* If this section would overlap us, then we must move up. */ | |
515 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
516 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
517 | { | |
518 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
519 | start_addr = (start_addr + align - 1) & -align; | |
520 | done = 0; | |
3bd72c6f | 521 | break; |
c1bd25fd DJ |
522 | } |
523 | ||
524 | /* Otherwise, we appear to be OK. So far. */ | |
525 | } | |
526 | } | |
527 | while (!done); | |
528 | ||
529 | offsets[sect->index] = start_addr; | |
530 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
531 | ||
532 | exec_set_section_address (bfd_get_filename (abfd), sect->index, start_addr); | |
533 | } | |
e8289572 JB |
534 | |
535 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 536 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
537 | version of the sym_fns.sym_offsets function for symbol readers that |
538 | don't need to do anything special. It allocates a section_offsets table | |
539 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
540 | ||
541 | void | |
542 | default_symfile_offsets (struct objfile *objfile, | |
543 | struct section_addr_info *addrs) | |
544 | { | |
545 | int i; | |
546 | ||
a39a16c4 | 547 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 548 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 549 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 550 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 551 | memset (objfile->section_offsets, 0, |
a39a16c4 | 552 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
553 | |
554 | /* Now calculate offsets for section that were specified by the | |
555 | caller. */ | |
a39a16c4 | 556 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
557 | { |
558 | struct other_sections *osp ; | |
559 | ||
560 | osp = &addrs->other[i] ; | |
561 | if (osp->addr == 0) | |
562 | continue; | |
563 | ||
564 | /* Record all sections in offsets */ | |
565 | /* The section_offsets in the objfile are here filled in using | |
566 | the BFD index. */ | |
567 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
568 | } | |
569 | ||
c1bd25fd DJ |
570 | /* For relocatable files, all loadable sections will start at zero. |
571 | The zero is meaningless, so try to pick arbitrary addresses such | |
572 | that no loadable sections overlap. This algorithm is quadratic, | |
573 | but the number of sections in a single object file is generally | |
574 | small. */ | |
575 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
576 | { | |
577 | struct place_section_arg arg; | |
2711e456 DJ |
578 | bfd *abfd = objfile->obfd; |
579 | asection *cur_sec; | |
580 | CORE_ADDR lowest = 0; | |
581 | ||
582 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
583 | /* We do not expect this to happen; just skip this step if the | |
584 | relocatable file has a section with an assigned VMA. */ | |
585 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
586 | break; | |
587 | ||
588 | if (cur_sec == NULL) | |
589 | { | |
590 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
591 | ||
592 | /* Pick non-overlapping offsets for sections the user did not | |
593 | place explicitly. */ | |
594 | arg.offsets = objfile->section_offsets; | |
595 | arg.lowest = 0; | |
596 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
597 | ||
598 | /* Correctly filling in the section offsets is not quite | |
599 | enough. Relocatable files have two properties that | |
600 | (most) shared objects do not: | |
601 | ||
602 | - Their debug information will contain relocations. Some | |
603 | shared libraries do also, but many do not, so this can not | |
604 | be assumed. | |
605 | ||
606 | - If there are multiple code sections they will be loaded | |
607 | at different relative addresses in memory than they are | |
608 | in the objfile, since all sections in the file will start | |
609 | at address zero. | |
610 | ||
611 | Because GDB has very limited ability to map from an | |
612 | address in debug info to the correct code section, | |
613 | it relies on adding SECT_OFF_TEXT to things which might be | |
614 | code. If we clear all the section offsets, and set the | |
615 | section VMAs instead, then symfile_relocate_debug_section | |
616 | will return meaningful debug information pointing at the | |
617 | correct sections. | |
618 | ||
619 | GDB has too many different data structures for section | |
620 | addresses - a bfd, objfile, and so_list all have section | |
621 | tables, as does exec_ops. Some of these could probably | |
622 | be eliminated. */ | |
623 | ||
624 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
625 | cur_sec = cur_sec->next) | |
626 | { | |
627 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
628 | continue; | |
629 | ||
630 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
631 | offsets[cur_sec->index] = 0; | |
632 | } | |
633 | } | |
c1bd25fd DJ |
634 | } |
635 | ||
e8289572 JB |
636 | /* Remember the bfd indexes for the .text, .data, .bss and |
637 | .rodata sections. */ | |
638 | init_objfile_sect_indices (objfile); | |
639 | } | |
640 | ||
641 | ||
c906108c SS |
642 | /* Process a symbol file, as either the main file or as a dynamically |
643 | loaded file. | |
644 | ||
96baa820 JM |
645 | OBJFILE is where the symbols are to be read from. |
646 | ||
7e8580c1 JB |
647 | ADDRS is the list of section load addresses. If the user has given |
648 | an 'add-symbol-file' command, then this is the list of offsets and | |
649 | addresses he or she provided as arguments to the command; or, if | |
650 | we're handling a shared library, these are the actual addresses the | |
651 | sections are loaded at, according to the inferior's dynamic linker | |
652 | (as gleaned by GDB's shared library code). We convert each address | |
653 | into an offset from the section VMA's as it appears in the object | |
654 | file, and then call the file's sym_offsets function to convert this | |
655 | into a format-specific offset table --- a `struct section_offsets'. | |
656 | If ADDRS is non-zero, OFFSETS must be zero. | |
657 | ||
658 | OFFSETS is a table of section offsets already in the right | |
659 | format-specific representation. NUM_OFFSETS is the number of | |
660 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
661 | assume this is the proper table the call to sym_offsets described | |
662 | above would produce. Instead of calling sym_offsets, we just dump | |
663 | it right into objfile->section_offsets. (When we're re-reading | |
664 | symbols from an objfile, we don't have the original load address | |
665 | list any more; all we have is the section offset table.) If | |
666 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
667 | |
668 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
669 | it's an extra symbol file such as dynamically loaded code. | |
670 | ||
671 | VERBO is nonzero if the caller has printed a verbose message about | |
672 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
673 | |
674 | void | |
7e8580c1 JB |
675 | syms_from_objfile (struct objfile *objfile, |
676 | struct section_addr_info *addrs, | |
677 | struct section_offsets *offsets, | |
678 | int num_offsets, | |
679 | int mainline, | |
680 | int verbo) | |
c906108c | 681 | { |
a39a16c4 | 682 | struct section_addr_info *local_addr = NULL; |
c906108c | 683 | struct cleanup *old_chain; |
2acceee2 | 684 | |
7e8580c1 | 685 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 686 | |
c906108c SS |
687 | init_entry_point_info (objfile); |
688 | find_sym_fns (objfile); | |
689 | ||
75245b24 MS |
690 | if (objfile->sf == NULL) |
691 | return; /* No symbols. */ | |
692 | ||
c906108c SS |
693 | /* Make sure that partially constructed symbol tables will be cleaned up |
694 | if an error occurs during symbol reading. */ | |
74b7792f | 695 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 696 | |
a39a16c4 MM |
697 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
698 | list. We now establish the convention that an addr of zero means | |
699 | no load address was specified. */ | |
700 | if (! addrs && ! offsets) | |
701 | { | |
5417f6dc | 702 | local_addr |
a39a16c4 MM |
703 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
704 | make_cleanup (xfree, local_addr); | |
705 | addrs = local_addr; | |
706 | } | |
707 | ||
708 | /* Now either addrs or offsets is non-zero. */ | |
709 | ||
c5aa993b | 710 | if (mainline) |
c906108c SS |
711 | { |
712 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 713 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 714 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
715 | |
716 | /* Since no error yet, throw away the old symbol table. */ | |
717 | ||
718 | if (symfile_objfile != NULL) | |
719 | { | |
720 | free_objfile (symfile_objfile); | |
721 | symfile_objfile = NULL; | |
722 | } | |
723 | ||
724 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
725 | If the user wants to get rid of them, they should do "symbol-file" |
726 | without arguments first. Not sure this is the best behavior | |
727 | (PR 2207). */ | |
c906108c | 728 | |
c5aa993b | 729 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
730 | } |
731 | ||
732 | /* Convert addr into an offset rather than an absolute address. | |
733 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 734 | and assume that <addr> is where that got loaded. |
c906108c | 735 | |
53a5351d JM |
736 | We no longer warn if the lowest section is not a text segment (as |
737 | happens for the PA64 port. */ | |
1549f619 | 738 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 739 | { |
1549f619 EZ |
740 | asection *lower_sect; |
741 | asection *sect; | |
742 | CORE_ADDR lower_offset; | |
743 | int i; | |
744 | ||
5417f6dc | 745 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
746 | continguous sections. FIXME!! won't work without call to find |
747 | .text first, but this assumes text is lowest section. */ | |
748 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
749 | if (lower_sect == NULL) | |
c906108c | 750 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 751 | &lower_sect); |
2acceee2 | 752 | if (lower_sect == NULL) |
8a3fe4f8 | 753 | warning (_("no loadable sections found in added symbol-file %s"), |
c906108c | 754 | objfile->name); |
5417f6dc | 755 | else |
b8fbeb18 | 756 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) |
8a3fe4f8 | 757 | warning (_("Lowest section in %s is %s at %s"), |
b8fbeb18 EZ |
758 | objfile->name, |
759 | bfd_section_name (objfile->obfd, lower_sect), | |
760 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
761 | if (lower_sect != NULL) |
762 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
763 | else | |
764 | lower_offset = 0; | |
5417f6dc | 765 | |
13de58df | 766 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
767 | FIXME! Sections must be in order of increasing loadable section |
768 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 769 | |
13de58df JB |
770 | Adjust offsets if the segments are not contiguous. |
771 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
772 | the offset of the highest loadable section lower than it |
773 | (the loadable section directly below it in memory). | |
774 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
775 | ||
1549f619 | 776 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
777 | { |
778 | if (addrs->other[i].addr != 0) | |
779 | { | |
780 | sect = bfd_get_section_by_name (objfile->obfd, | |
781 | addrs->other[i].name); | |
782 | if (sect) | |
783 | { | |
784 | addrs->other[i].addr | |
785 | -= bfd_section_vma (objfile->obfd, sect); | |
786 | lower_offset = addrs->other[i].addr; | |
787 | /* This is the index used by BFD. */ | |
788 | addrs->other[i].sectindex = sect->index ; | |
789 | } | |
790 | else | |
791 | { | |
8a3fe4f8 | 792 | warning (_("section %s not found in %s"), |
5417f6dc | 793 | addrs->other[i].name, |
7e8580c1 JB |
794 | objfile->name); |
795 | addrs->other[i].addr = 0; | |
796 | } | |
797 | } | |
798 | else | |
799 | addrs->other[i].addr = lower_offset; | |
800 | } | |
c906108c SS |
801 | } |
802 | ||
803 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
804 | appear for this new file, and record how verbose to be, then do the | |
805 | initial symbol reading for this file. */ | |
806 | ||
c5aa993b | 807 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 808 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 809 | |
7e8580c1 JB |
810 | if (addrs) |
811 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
812 | else | |
813 | { | |
814 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
815 | ||
816 | /* Just copy in the offset table directly as given to us. */ | |
817 | objfile->num_sections = num_offsets; | |
818 | objfile->section_offsets | |
819 | = ((struct section_offsets *) | |
8b92e4d5 | 820 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
821 | memcpy (objfile->section_offsets, offsets, size); |
822 | ||
823 | init_objfile_sect_indices (objfile); | |
824 | } | |
c906108c | 825 | |
52d16ba8 | 826 | #ifndef DEPRECATED_IBM6000_TARGET |
c906108c SS |
827 | /* This is a SVR4/SunOS specific hack, I think. In any event, it |
828 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
829 | because it knows the mapping between bfd sections and | |
830 | section_offsets. */ | |
831 | /* This is a hack. As far as I can tell, section offsets are not | |
832 | target dependent. They are all set to addr with a couple of | |
833 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
834 | offsets are kept in solib structures anyway and rs6000 xcoff | |
835 | which handles shared libraries in a completely unique way. | |
836 | ||
837 | Section offsets are built similarly, except that they are built | |
838 | by adding addr in all cases because there is no clear mapping | |
839 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 840 | has a different algorithm for finding section offsets. |
c906108c SS |
841 | |
842 | These should probably all be collapsed into some target | |
843 | independent form of shared library support. FIXME. */ | |
844 | ||
2acceee2 | 845 | if (addrs) |
c906108c SS |
846 | { |
847 | struct obj_section *s; | |
848 | ||
5417f6dc RM |
849 | /* Map section offsets in "addr" back to the object's |
850 | sections by comparing the section names with bfd's | |
2acceee2 JM |
851 | section names. Then adjust the section address by |
852 | the offset. */ /* for gdb/13815 */ | |
5417f6dc | 853 | |
96baa820 | 854 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 855 | { |
2acceee2 JM |
856 | CORE_ADDR s_addr = 0; |
857 | int i; | |
858 | ||
5417f6dc | 859 | for (i = 0; |
a39a16c4 | 860 | !s_addr && i < addrs->num_sections && addrs->other[i].name; |
62557bbc | 861 | i++) |
5417f6dc RM |
862 | if (strcmp (bfd_section_name (s->objfile->obfd, |
863 | s->the_bfd_section), | |
fbd35540 | 864 | addrs->other[i].name) == 0) |
2acceee2 | 865 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
5417f6dc | 866 | |
c906108c | 867 | s->addr -= s->offset; |
2acceee2 | 868 | s->addr += s_addr; |
c906108c | 869 | s->endaddr -= s->offset; |
2acceee2 JM |
870 | s->endaddr += s_addr; |
871 | s->offset += s_addr; | |
c906108c SS |
872 | } |
873 | } | |
52d16ba8 | 874 | #endif /* not DEPRECATED_IBM6000_TARGET */ |
c906108c | 875 | |
96baa820 | 876 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 877 | |
c906108c SS |
878 | /* Don't allow char * to have a typename (else would get caddr_t). |
879 | Ditto void *. FIXME: Check whether this is now done by all the | |
880 | symbol readers themselves (many of them now do), and if so remove | |
881 | it from here. */ | |
882 | ||
883 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
884 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
885 | ||
886 | /* Mark the objfile has having had initial symbol read attempted. Note | |
887 | that this does not mean we found any symbols... */ | |
888 | ||
c5aa993b | 889 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
890 | |
891 | /* Discard cleanups as symbol reading was successful. */ | |
892 | ||
893 | discard_cleanups (old_chain); | |
c906108c SS |
894 | } |
895 | ||
896 | /* Perform required actions after either reading in the initial | |
897 | symbols for a new objfile, or mapping in the symbols from a reusable | |
898 | objfile. */ | |
c5aa993b | 899 | |
c906108c | 900 | void |
fba45db2 | 901 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
902 | { |
903 | ||
904 | /* If this is the main symbol file we have to clean up all users of the | |
905 | old main symbol file. Otherwise it is sufficient to fixup all the | |
906 | breakpoints that may have been redefined by this symbol file. */ | |
907 | if (mainline) | |
908 | { | |
909 | /* OK, make it the "real" symbol file. */ | |
910 | symfile_objfile = objfile; | |
911 | ||
912 | clear_symtab_users (); | |
913 | } | |
914 | else | |
915 | { | |
916 | breakpoint_re_set (); | |
917 | } | |
918 | ||
919 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 920 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
921 | } |
922 | ||
923 | /* Process a symbol file, as either the main file or as a dynamically | |
924 | loaded file. | |
925 | ||
5417f6dc RM |
926 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
927 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f JB |
928 | |
929 | FROM_TTY says how verbose to be. | |
930 | ||
931 | MAINLINE specifies whether this is the main symbol file, or whether | |
932 | it's an extra symbol file such as dynamically loaded code. | |
933 | ||
934 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
935 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
936 | non-zero. | |
c906108c | 937 | |
c906108c SS |
938 | Upon success, returns a pointer to the objfile that was added. |
939 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f | 940 | static struct objfile * |
5417f6dc | 941 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty, |
7904e09f JB |
942 | struct section_addr_info *addrs, |
943 | struct section_offsets *offsets, | |
944 | int num_offsets, | |
945 | int mainline, int flags) | |
c906108c SS |
946 | { |
947 | struct objfile *objfile; | |
948 | struct partial_symtab *psymtab; | |
5b5d99cf | 949 | char *debugfile; |
7b90c3f9 | 950 | struct section_addr_info *orig_addrs = NULL; |
a39a16c4 | 951 | struct cleanup *my_cleanups; |
5417f6dc | 952 | const char *name = bfd_get_filename (abfd); |
c906108c | 953 | |
5417f6dc | 954 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 955 | |
5417f6dc RM |
956 | /* Give user a chance to burp if we'd be |
957 | interactively wiping out any existing symbols. */ | |
c906108c SS |
958 | |
959 | if ((have_full_symbols () || have_partial_symbols ()) | |
960 | && mainline | |
961 | && from_tty | |
962 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
8a3fe4f8 | 963 | error (_("Not confirmed.")); |
c906108c | 964 | |
2df3850c | 965 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 966 | discard_cleanups (my_cleanups); |
c906108c | 967 | |
a39a16c4 | 968 | if (addrs) |
63cd24fe | 969 | { |
7b90c3f9 JB |
970 | orig_addrs = copy_section_addr_info (addrs); |
971 | make_cleanup_free_section_addr_info (orig_addrs); | |
63cd24fe | 972 | } |
a39a16c4 | 973 | |
78a4a9b9 AC |
974 | /* We either created a new mapped symbol table, mapped an existing |
975 | symbol table file which has not had initial symbol reading | |
976 | performed, or need to read an unmapped symbol table. */ | |
977 | if (from_tty || info_verbose) | |
c906108c | 978 | { |
769d7dc4 AC |
979 | if (deprecated_pre_add_symbol_hook) |
980 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 981 | else |
c906108c | 982 | { |
a3f17187 | 983 | printf_unfiltered (_("Reading symbols from %s..."), name); |
c906108c SS |
984 | wrap_here (""); |
985 | gdb_flush (gdb_stdout); | |
986 | } | |
c906108c | 987 | } |
78a4a9b9 AC |
988 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
989 | mainline, from_tty); | |
c906108c SS |
990 | |
991 | /* We now have at least a partial symbol table. Check to see if the | |
992 | user requested that all symbols be read on initial access via either | |
993 | the gdb startup command line or on a per symbol file basis. Expand | |
994 | all partial symbol tables for this objfile if so. */ | |
995 | ||
2acceee2 | 996 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
997 | { |
998 | if (from_tty || info_verbose) | |
999 | { | |
a3f17187 | 1000 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1001 | wrap_here (""); |
1002 | gdb_flush (gdb_stdout); | |
1003 | } | |
1004 | ||
c5aa993b | 1005 | for (psymtab = objfile->psymtabs; |
c906108c | 1006 | psymtab != NULL; |
c5aa993b | 1007 | psymtab = psymtab->next) |
c906108c SS |
1008 | { |
1009 | psymtab_to_symtab (psymtab); | |
1010 | } | |
1011 | } | |
1012 | ||
5b5d99cf JB |
1013 | debugfile = find_separate_debug_file (objfile); |
1014 | if (debugfile) | |
1015 | { | |
5b5d99cf JB |
1016 | if (addrs != NULL) |
1017 | { | |
1018 | objfile->separate_debug_objfile | |
a39a16c4 | 1019 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); |
5b5d99cf JB |
1020 | } |
1021 | else | |
1022 | { | |
1023 | objfile->separate_debug_objfile | |
1024 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
1025 | } | |
1026 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
1027 | = objfile; | |
5417f6dc | 1028 | |
5b5d99cf JB |
1029 | /* Put the separate debug object before the normal one, this is so that |
1030 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
1031 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
5417f6dc | 1032 | |
5b5d99cf JB |
1033 | xfree (debugfile); |
1034 | } | |
5417f6dc | 1035 | |
cb3c37b2 JB |
1036 | if (!have_partial_symbols () && !have_full_symbols ()) |
1037 | { | |
1038 | wrap_here (""); | |
a3f17187 | 1039 | printf_filtered (_("(no debugging symbols found)")); |
8f5ba92b JG |
1040 | if (from_tty || info_verbose) |
1041 | printf_filtered ("..."); | |
1042 | else | |
1043 | printf_filtered ("\n"); | |
cb3c37b2 JB |
1044 | wrap_here (""); |
1045 | } | |
1046 | ||
c906108c SS |
1047 | if (from_tty || info_verbose) |
1048 | { | |
769d7dc4 AC |
1049 | if (deprecated_post_add_symbol_hook) |
1050 | deprecated_post_add_symbol_hook (); | |
c906108c | 1051 | else |
c5aa993b | 1052 | { |
a3f17187 | 1053 | printf_unfiltered (_("done.\n")); |
c5aa993b | 1054 | } |
c906108c SS |
1055 | } |
1056 | ||
481d0f41 JB |
1057 | /* We print some messages regardless of whether 'from_tty || |
1058 | info_verbose' is true, so make sure they go out at the right | |
1059 | time. */ | |
1060 | gdb_flush (gdb_stdout); | |
1061 | ||
a39a16c4 MM |
1062 | do_cleanups (my_cleanups); |
1063 | ||
109f874e MS |
1064 | if (objfile->sf == NULL) |
1065 | return objfile; /* No symbols. */ | |
1066 | ||
c906108c SS |
1067 | new_symfile_objfile (objfile, mainline, from_tty); |
1068 | ||
06d3b283 | 1069 | observer_notify_new_objfile (objfile); |
c906108c | 1070 | |
ce7d4522 | 1071 | bfd_cache_close_all (); |
c906108c SS |
1072 | return (objfile); |
1073 | } | |
1074 | ||
7904e09f | 1075 | |
eb4556d7 JB |
1076 | /* Process the symbol file ABFD, as either the main file or as a |
1077 | dynamically loaded file. | |
1078 | ||
1079 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1080 | details. */ | |
1081 | struct objfile * | |
1082 | symbol_file_add_from_bfd (bfd *abfd, int from_tty, | |
1083 | struct section_addr_info *addrs, | |
1084 | int mainline, int flags) | |
1085 | { | |
1086 | return symbol_file_add_with_addrs_or_offsets (abfd, | |
1087 | from_tty, addrs, 0, 0, | |
1088 | mainline, flags); | |
1089 | } | |
1090 | ||
1091 | ||
7904e09f JB |
1092 | /* Process a symbol file, as either the main file or as a dynamically |
1093 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1094 | for details. */ | |
1095 | struct objfile * | |
1096 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
1097 | int mainline, int flags) | |
1098 | { | |
eb4556d7 JB |
1099 | return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty, |
1100 | addrs, mainline, flags); | |
7904e09f JB |
1101 | } |
1102 | ||
1103 | ||
d7db6da9 FN |
1104 | /* Call symbol_file_add() with default values and update whatever is |
1105 | affected by the loading of a new main(). | |
1106 | Used when the file is supplied in the gdb command line | |
1107 | and by some targets with special loading requirements. | |
1108 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1109 | argument for the switches that can only be specified in the symbol_file | |
1110 | command itself. */ | |
5417f6dc | 1111 | |
1adeb98a FN |
1112 | void |
1113 | symbol_file_add_main (char *args, int from_tty) | |
1114 | { | |
d7db6da9 FN |
1115 | symbol_file_add_main_1 (args, from_tty, 0); |
1116 | } | |
1117 | ||
1118 | static void | |
1119 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1120 | { | |
1121 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1122 | ||
d7db6da9 FN |
1123 | /* Getting new symbols may change our opinion about |
1124 | what is frameless. */ | |
1125 | reinit_frame_cache (); | |
1126 | ||
1127 | set_initial_language (); | |
1adeb98a FN |
1128 | } |
1129 | ||
1130 | void | |
1131 | symbol_file_clear (int from_tty) | |
1132 | { | |
1133 | if ((have_full_symbols () || have_partial_symbols ()) | |
1134 | && from_tty | |
0430b0d6 AS |
1135 | && (symfile_objfile |
1136 | ? !query (_("Discard symbol table from `%s'? "), | |
1137 | symfile_objfile->name) | |
1138 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1139 | error (_("Not confirmed.")); |
1adeb98a FN |
1140 | free_all_objfiles (); |
1141 | ||
1142 | /* solib descriptors may have handles to objfiles. Since their | |
1143 | storage has just been released, we'd better wipe the solib | |
1144 | descriptors as well. | |
1145 | */ | |
1146 | #if defined(SOLIB_RESTART) | |
1147 | SOLIB_RESTART (); | |
1148 | #endif | |
1149 | ||
1150 | symfile_objfile = NULL; | |
1151 | if (from_tty) | |
a3f17187 | 1152 | printf_unfiltered (_("No symbol file now.\n")); |
1adeb98a FN |
1153 | } |
1154 | ||
5b5d99cf JB |
1155 | static char * |
1156 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1157 | { | |
1158 | asection *sect; | |
1159 | bfd_size_type debuglink_size; | |
1160 | unsigned long crc32; | |
1161 | char *contents; | |
1162 | int crc_offset; | |
1163 | unsigned char *p; | |
5417f6dc | 1164 | |
5b5d99cf JB |
1165 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1166 | ||
1167 | if (sect == NULL) | |
1168 | return NULL; | |
1169 | ||
1170 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1171 | |
5b5d99cf JB |
1172 | contents = xmalloc (debuglink_size); |
1173 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1174 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1175 | ||
1176 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1177 | crc_offset = strlen (contents) + 1; | |
1178 | crc_offset = (crc_offset + 3) & ~3; | |
1179 | ||
1180 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1181 | |
5b5d99cf JB |
1182 | *crc32_out = crc32; |
1183 | return contents; | |
1184 | } | |
1185 | ||
1186 | static int | |
1187 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1188 | { | |
1189 | unsigned long file_crc = 0; | |
1190 | int fd; | |
777ea8f1 | 1191 | gdb_byte buffer[8*1024]; |
5b5d99cf JB |
1192 | int count; |
1193 | ||
1194 | fd = open (name, O_RDONLY | O_BINARY); | |
1195 | if (fd < 0) | |
1196 | return 0; | |
1197 | ||
1198 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1199 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1200 | ||
1201 | close (fd); | |
1202 | ||
1203 | return crc == file_crc; | |
1204 | } | |
1205 | ||
aa28a74e | 1206 | char *debug_file_directory = NULL; |
920d2a44 AC |
1207 | static void |
1208 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1209 | struct cmd_list_element *c, const char *value) | |
1210 | { | |
1211 | fprintf_filtered (file, _("\ | |
1212 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1213 | value); | |
1214 | } | |
5b5d99cf JB |
1215 | |
1216 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1217 | #define DEBUG_SUBDIRECTORY ".debug" | |
1218 | #endif | |
1219 | ||
1220 | static char * | |
1221 | find_separate_debug_file (struct objfile *objfile) | |
1222 | { | |
1223 | asection *sect; | |
1224 | char *basename; | |
1225 | char *dir; | |
1226 | char *debugfile; | |
1227 | char *name_copy; | |
aa28a74e | 1228 | char *canon_name; |
5b5d99cf JB |
1229 | bfd_size_type debuglink_size; |
1230 | unsigned long crc32; | |
1231 | int i; | |
1232 | ||
1233 | basename = get_debug_link_info (objfile, &crc32); | |
1234 | ||
1235 | if (basename == NULL) | |
1236 | return NULL; | |
5417f6dc | 1237 | |
5b5d99cf JB |
1238 | dir = xstrdup (objfile->name); |
1239 | ||
fe36c4f4 JB |
1240 | /* Strip off the final filename part, leaving the directory name, |
1241 | followed by a slash. Objfile names should always be absolute and | |
1242 | tilde-expanded, so there should always be a slash in there | |
1243 | somewhere. */ | |
5b5d99cf JB |
1244 | for (i = strlen(dir) - 1; i >= 0; i--) |
1245 | { | |
1246 | if (IS_DIR_SEPARATOR (dir[i])) | |
1247 | break; | |
1248 | } | |
fe36c4f4 | 1249 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1250 | dir[i+1] = '\0'; |
5417f6dc | 1251 | |
5b5d99cf JB |
1252 | debugfile = alloca (strlen (debug_file_directory) + 1 |
1253 | + strlen (dir) | |
1254 | + strlen (DEBUG_SUBDIRECTORY) | |
1255 | + strlen ("/") | |
5417f6dc | 1256 | + strlen (basename) |
5b5d99cf JB |
1257 | + 1); |
1258 | ||
1259 | /* First try in the same directory as the original file. */ | |
1260 | strcpy (debugfile, dir); | |
1261 | strcat (debugfile, basename); | |
1262 | ||
1263 | if (separate_debug_file_exists (debugfile, crc32)) | |
1264 | { | |
1265 | xfree (basename); | |
1266 | xfree (dir); | |
1267 | return xstrdup (debugfile); | |
1268 | } | |
5417f6dc | 1269 | |
5b5d99cf JB |
1270 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1271 | strcpy (debugfile, dir); | |
1272 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1273 | strcat (debugfile, "/"); | |
1274 | strcat (debugfile, basename); | |
1275 | ||
1276 | if (separate_debug_file_exists (debugfile, crc32)) | |
1277 | { | |
1278 | xfree (basename); | |
1279 | xfree (dir); | |
1280 | return xstrdup (debugfile); | |
1281 | } | |
5417f6dc | 1282 | |
5b5d99cf JB |
1283 | /* Then try in the global debugfile directory. */ |
1284 | strcpy (debugfile, debug_file_directory); | |
1285 | strcat (debugfile, "/"); | |
1286 | strcat (debugfile, dir); | |
5b5d99cf JB |
1287 | strcat (debugfile, basename); |
1288 | ||
1289 | if (separate_debug_file_exists (debugfile, crc32)) | |
1290 | { | |
1291 | xfree (basename); | |
1292 | xfree (dir); | |
1293 | return xstrdup (debugfile); | |
1294 | } | |
5417f6dc | 1295 | |
aa28a74e DJ |
1296 | /* If the file is in the sysroot, try using its base path in the |
1297 | global debugfile directory. */ | |
1298 | canon_name = lrealpath (dir); | |
1299 | if (canon_name | |
1300 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1301 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1302 | { | |
1303 | strcpy (debugfile, debug_file_directory); | |
1304 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1305 | strcat (debugfile, "/"); | |
1306 | strcat (debugfile, basename); | |
1307 | ||
1308 | if (separate_debug_file_exists (debugfile, crc32)) | |
1309 | { | |
1310 | xfree (canon_name); | |
1311 | xfree (basename); | |
1312 | xfree (dir); | |
1313 | return xstrdup (debugfile); | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | if (canon_name) | |
1318 | xfree (canon_name); | |
1319 | ||
5b5d99cf JB |
1320 | xfree (basename); |
1321 | xfree (dir); | |
1322 | return NULL; | |
1323 | } | |
1324 | ||
1325 | ||
c906108c SS |
1326 | /* This is the symbol-file command. Read the file, analyze its |
1327 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1328 | the command is rather bizarre: |
1329 | ||
1330 | 1. The function buildargv implements various quoting conventions | |
1331 | which are undocumented and have little or nothing in common with | |
1332 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1333 | ||
1334 | 2. Options are used, which are not generally used in GDB (perhaps | |
1335 | "set mapped on", "set readnow on" would be better) | |
1336 | ||
1337 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1338 | conventions (because it is confusing and inconvenient). */ |
1339 | ||
1340 | void | |
fba45db2 | 1341 | symbol_file_command (char *args, int from_tty) |
c906108c | 1342 | { |
c906108c SS |
1343 | dont_repeat (); |
1344 | ||
1345 | if (args == NULL) | |
1346 | { | |
1adeb98a | 1347 | symbol_file_clear (from_tty); |
c906108c SS |
1348 | } |
1349 | else | |
1350 | { | |
cb2f3a29 MK |
1351 | char **argv = buildargv (args); |
1352 | int flags = OBJF_USERLOADED; | |
1353 | struct cleanup *cleanups; | |
1354 | char *name = NULL; | |
1355 | ||
1356 | if (argv == NULL) | |
1357 | nomem (0); | |
1358 | ||
7a292a7a | 1359 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1360 | while (*argv != NULL) |
1361 | { | |
78a4a9b9 AC |
1362 | if (strcmp (*argv, "-readnow") == 0) |
1363 | flags |= OBJF_READNOW; | |
1364 | else if (**argv == '-') | |
8a3fe4f8 | 1365 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1366 | else |
1367 | { | |
cb2f3a29 | 1368 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1369 | name = *argv; |
78a4a9b9 | 1370 | } |
cb2f3a29 | 1371 | |
c906108c SS |
1372 | argv++; |
1373 | } | |
1374 | ||
1375 | if (name == NULL) | |
cb2f3a29 MK |
1376 | error (_("no symbol file name was specified")); |
1377 | ||
c906108c SS |
1378 | do_cleanups (cleanups); |
1379 | } | |
1380 | } | |
1381 | ||
1382 | /* Set the initial language. | |
1383 | ||
cb2f3a29 MK |
1384 | FIXME: A better solution would be to record the language in the |
1385 | psymtab when reading partial symbols, and then use it (if known) to | |
1386 | set the language. This would be a win for formats that encode the | |
1387 | language in an easily discoverable place, such as DWARF. For | |
1388 | stabs, we can jump through hoops looking for specially named | |
1389 | symbols or try to intuit the language from the specific type of | |
1390 | stabs we find, but we can't do that until later when we read in | |
1391 | full symbols. */ | |
c906108c SS |
1392 | |
1393 | static void | |
fba45db2 | 1394 | set_initial_language (void) |
c906108c SS |
1395 | { |
1396 | struct partial_symtab *pst; | |
c5aa993b | 1397 | enum language lang = language_unknown; |
c906108c SS |
1398 | |
1399 | pst = find_main_psymtab (); | |
1400 | if (pst != NULL) | |
1401 | { | |
c5aa993b | 1402 | if (pst->filename != NULL) |
cb2f3a29 MK |
1403 | lang = deduce_language_from_filename (pst->filename); |
1404 | ||
c906108c SS |
1405 | if (lang == language_unknown) |
1406 | { | |
c5aa993b JM |
1407 | /* Make C the default language */ |
1408 | lang = language_c; | |
c906108c | 1409 | } |
cb2f3a29 | 1410 | |
c906108c | 1411 | set_language (lang); |
cb2f3a29 | 1412 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1413 | } |
1414 | } | |
1415 | ||
cb2f3a29 MK |
1416 | /* Open the file specified by NAME and hand it off to BFD for |
1417 | preliminary analysis. Return a newly initialized bfd *, which | |
1418 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1419 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1420 | |
1421 | bfd * | |
fba45db2 | 1422 | symfile_bfd_open (char *name) |
c906108c SS |
1423 | { |
1424 | bfd *sym_bfd; | |
1425 | int desc; | |
1426 | char *absolute_name; | |
1427 | ||
cb2f3a29 | 1428 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1429 | |
1430 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 MK |
1431 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
1432 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1433 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1434 | if (desc < 0) |
1435 | { | |
1436 | char *exename = alloca (strlen (name) + 5); | |
1437 | strcat (strcpy (exename, name), ".exe"); | |
014d698b EZ |
1438 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
1439 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
c906108c SS |
1440 | } |
1441 | #endif | |
1442 | if (desc < 0) | |
1443 | { | |
b8c9b27d | 1444 | make_cleanup (xfree, name); |
c906108c SS |
1445 | perror_with_name (name); |
1446 | } | |
cb2f3a29 MK |
1447 | |
1448 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1449 | bfd. It'll be freed in free_objfile(). */ | |
1450 | xfree (name); | |
1451 | name = absolute_name; | |
c906108c | 1452 | |
9f76c2cd | 1453 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1454 | if (!sym_bfd) |
1455 | { | |
1456 | close (desc); | |
b8c9b27d | 1457 | make_cleanup (xfree, name); |
8a3fe4f8 | 1458 | error (_("\"%s\": can't open to read symbols: %s."), name, |
c906108c SS |
1459 | bfd_errmsg (bfd_get_error ())); |
1460 | } | |
549c1eea | 1461 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1462 | |
1463 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1464 | { | |
cb2f3a29 MK |
1465 | /* FIXME: should be checking for errors from bfd_close (for one |
1466 | thing, on error it does not free all the storage associated | |
1467 | with the bfd). */ | |
1468 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1469 | make_cleanup (xfree, name); |
8a3fe4f8 | 1470 | error (_("\"%s\": can't read symbols: %s."), name, |
c906108c SS |
1471 | bfd_errmsg (bfd_get_error ())); |
1472 | } | |
cb2f3a29 MK |
1473 | |
1474 | return sym_bfd; | |
c906108c SS |
1475 | } |
1476 | ||
cb2f3a29 MK |
1477 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1478 | the section was not found. */ | |
1479 | ||
0e931cf0 JB |
1480 | int |
1481 | get_section_index (struct objfile *objfile, char *section_name) | |
1482 | { | |
1483 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1484 | |
0e931cf0 JB |
1485 | if (sect) |
1486 | return sect->index; | |
1487 | else | |
1488 | return -1; | |
1489 | } | |
1490 | ||
cb2f3a29 MK |
1491 | /* Link SF into the global symtab_fns list. Called on startup by the |
1492 | _initialize routine in each object file format reader, to register | |
1493 | information about each format the the reader is prepared to | |
1494 | handle. */ | |
c906108c SS |
1495 | |
1496 | void | |
fba45db2 | 1497 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1498 | { |
1499 | sf->next = symtab_fns; | |
1500 | symtab_fns = sf; | |
1501 | } | |
1502 | ||
cb2f3a29 MK |
1503 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1504 | either returns or calls error(). The result is an initialized | |
1505 | struct sym_fns in the objfile structure, that contains cached | |
1506 | information about the symbol file. */ | |
c906108c SS |
1507 | |
1508 | static void | |
fba45db2 | 1509 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1510 | { |
1511 | struct sym_fns *sf; | |
c5aa993b JM |
1512 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1513 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1514 | |
75245b24 MS |
1515 | if (our_flavour == bfd_target_srec_flavour |
1516 | || our_flavour == bfd_target_ihex_flavour | |
1517 | || our_flavour == bfd_target_tekhex_flavour) | |
cb2f3a29 | 1518 | return; /* No symbols. */ |
75245b24 | 1519 | |
c5aa993b | 1520 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1521 | { |
c5aa993b | 1522 | if (our_flavour == sf->sym_flavour) |
c906108c | 1523 | { |
c5aa993b | 1524 | objfile->sf = sf; |
c906108c SS |
1525 | return; |
1526 | } | |
1527 | } | |
cb2f3a29 | 1528 | |
8a3fe4f8 | 1529 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
c5aa993b | 1530 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1531 | } |
1532 | \f | |
cb2f3a29 | 1533 | |
c906108c SS |
1534 | /* This function runs the load command of our current target. */ |
1535 | ||
1536 | static void | |
fba45db2 | 1537 | load_command (char *arg, int from_tty) |
c906108c SS |
1538 | { |
1539 | if (arg == NULL) | |
1986bccd AS |
1540 | { |
1541 | char *parg; | |
1542 | int count = 0; | |
1543 | ||
1544 | parg = arg = get_exec_file (1); | |
1545 | ||
1546 | /* Count how many \ " ' tab space there are in the name. */ | |
1547 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1548 | { | |
1549 | parg++; | |
1550 | count++; | |
1551 | } | |
1552 | ||
1553 | if (count) | |
1554 | { | |
1555 | /* We need to quote this string so buildargv can pull it apart. */ | |
1556 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1557 | char *ptemp = temp; | |
1558 | char *prev; | |
1559 | ||
1560 | make_cleanup (xfree, temp); | |
1561 | ||
1562 | prev = parg = arg; | |
1563 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1564 | { | |
1565 | strncpy (ptemp, prev, parg - prev); | |
1566 | ptemp += parg - prev; | |
1567 | prev = parg++; | |
1568 | *ptemp++ = '\\'; | |
1569 | } | |
1570 | strcpy (ptemp, prev); | |
1571 | ||
1572 | arg = temp; | |
1573 | } | |
1574 | } | |
1575 | ||
6490cafe DJ |
1576 | /* The user might be reloading because the binary has changed. Take |
1577 | this opportunity to check. */ | |
1578 | reopen_exec_file (); | |
1579 | reread_symbols (); | |
1580 | ||
c906108c | 1581 | target_load (arg, from_tty); |
2889e661 JB |
1582 | |
1583 | /* After re-loading the executable, we don't really know which | |
1584 | overlays are mapped any more. */ | |
1585 | overlay_cache_invalid = 1; | |
c906108c SS |
1586 | } |
1587 | ||
1588 | /* This version of "load" should be usable for any target. Currently | |
1589 | it is just used for remote targets, not inftarg.c or core files, | |
1590 | on the theory that only in that case is it useful. | |
1591 | ||
1592 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1593 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1594 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1595 | performance compares. */ | |
917317f4 | 1596 | |
917317f4 JM |
1597 | static int validate_download = 0; |
1598 | ||
e4f9b4d5 MS |
1599 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1600 | ||
1601 | static void | |
1602 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1603 | { | |
1604 | bfd_size_type *sum = data; | |
1605 | ||
2c500098 | 1606 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1607 | } |
1608 | ||
1609 | /* Opaque data for load_section_callback. */ | |
1610 | struct load_section_data { | |
1611 | unsigned long load_offset; | |
a76d924d DJ |
1612 | struct load_progress_data *progress_data; |
1613 | VEC(memory_write_request_s) *requests; | |
1614 | }; | |
1615 | ||
1616 | /* Opaque data for load_progress. */ | |
1617 | struct load_progress_data { | |
1618 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1619 | unsigned long write_count; |
1620 | unsigned long data_count; | |
1621 | bfd_size_type total_size; | |
a76d924d DJ |
1622 | }; |
1623 | ||
1624 | /* Opaque data for load_progress for a single section. */ | |
1625 | struct load_progress_section_data { | |
1626 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1627 | |
a76d924d | 1628 | /* Per-section data. */ |
cf7a04e8 DJ |
1629 | const char *section_name; |
1630 | ULONGEST section_sent; | |
1631 | ULONGEST section_size; | |
1632 | CORE_ADDR lma; | |
1633 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1634 | }; |
1635 | ||
a76d924d | 1636 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1637 | |
1638 | static void | |
1639 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1640 | { | |
a76d924d DJ |
1641 | struct load_progress_section_data *args = untyped_arg; |
1642 | struct load_progress_data *totals; | |
1643 | ||
1644 | if (args == NULL) | |
1645 | /* Writing padding data. No easy way to get at the cumulative | |
1646 | stats, so just ignore this. */ | |
1647 | return; | |
1648 | ||
1649 | totals = args->cumulative; | |
1650 | ||
1651 | if (bytes == 0 && args->section_sent == 0) | |
1652 | { | |
1653 | /* The write is just starting. Let the user know we've started | |
1654 | this section. */ | |
1655 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", | |
1656 | args->section_name, paddr_nz (args->section_size), | |
1657 | paddr_nz (args->lma)); | |
1658 | return; | |
1659 | } | |
cf7a04e8 DJ |
1660 | |
1661 | if (validate_download) | |
1662 | { | |
1663 | /* Broken memories and broken monitors manifest themselves here | |
1664 | when bring new computers to life. This doubles already slow | |
1665 | downloads. */ | |
1666 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1667 | might add a verify_memory() method to the target vector and | |
1668 | then use that. remote.c could implement that method using | |
1669 | the ``qCRC'' packet. */ | |
1670 | gdb_byte *check = xmalloc (bytes); | |
1671 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1672 | ||
1673 | if (target_read_memory (args->lma, check, bytes) != 0) | |
1674 | error (_("Download verify read failed at 0x%s"), | |
1675 | paddr (args->lma)); | |
1676 | if (memcmp (args->buffer, check, bytes) != 0) | |
1677 | error (_("Download verify compare failed at 0x%s"), | |
1678 | paddr (args->lma)); | |
1679 | do_cleanups (verify_cleanups); | |
1680 | } | |
a76d924d | 1681 | totals->data_count += bytes; |
cf7a04e8 DJ |
1682 | args->lma += bytes; |
1683 | args->buffer += bytes; | |
a76d924d | 1684 | totals->write_count += 1; |
cf7a04e8 DJ |
1685 | args->section_sent += bytes; |
1686 | if (quit_flag | |
1687 | || (deprecated_ui_load_progress_hook != NULL | |
1688 | && deprecated_ui_load_progress_hook (args->section_name, | |
1689 | args->section_sent))) | |
1690 | error (_("Canceled the download")); | |
1691 | ||
1692 | if (deprecated_show_load_progress != NULL) | |
1693 | deprecated_show_load_progress (args->section_name, | |
1694 | args->section_sent, | |
1695 | args->section_size, | |
a76d924d DJ |
1696 | totals->data_count, |
1697 | totals->total_size); | |
cf7a04e8 DJ |
1698 | } |
1699 | ||
e4f9b4d5 MS |
1700 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1701 | ||
1702 | static void | |
1703 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1704 | { | |
a76d924d | 1705 | struct memory_write_request *new_request; |
e4f9b4d5 | 1706 | struct load_section_data *args = data; |
a76d924d | 1707 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1708 | bfd_size_type size = bfd_get_section_size (asec); |
1709 | gdb_byte *buffer; | |
cf7a04e8 | 1710 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1711 | |
cf7a04e8 DJ |
1712 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1713 | return; | |
e4f9b4d5 | 1714 | |
cf7a04e8 DJ |
1715 | if (size == 0) |
1716 | return; | |
e4f9b4d5 | 1717 | |
a76d924d DJ |
1718 | new_request = VEC_safe_push (memory_write_request_s, |
1719 | args->requests, NULL); | |
1720 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1721 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1722 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1723 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1724 | new_request->data = xmalloc (size); | |
1725 | new_request->baton = section_data; | |
cf7a04e8 | 1726 | |
a76d924d | 1727 | buffer = new_request->data; |
cf7a04e8 | 1728 | |
a76d924d DJ |
1729 | section_data->cumulative = args->progress_data; |
1730 | section_data->section_name = sect_name; | |
1731 | section_data->section_size = size; | |
1732 | section_data->lma = new_request->begin; | |
1733 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1734 | |
1735 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1736 | } |
1737 | ||
1738 | /* Clean up an entire memory request vector, including load | |
1739 | data and progress records. */ | |
cf7a04e8 | 1740 | |
a76d924d DJ |
1741 | static void |
1742 | clear_memory_write_data (void *arg) | |
1743 | { | |
1744 | VEC(memory_write_request_s) **vec_p = arg; | |
1745 | VEC(memory_write_request_s) *vec = *vec_p; | |
1746 | int i; | |
1747 | struct memory_write_request *mr; | |
cf7a04e8 | 1748 | |
a76d924d DJ |
1749 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1750 | { | |
1751 | xfree (mr->data); | |
1752 | xfree (mr->baton); | |
1753 | } | |
1754 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1755 | } |
1756 | ||
c906108c | 1757 | void |
917317f4 | 1758 | generic_load (char *args, int from_tty) |
c906108c | 1759 | { |
c906108c | 1760 | bfd *loadfile_bfd; |
2b71414d | 1761 | struct timeval start_time, end_time; |
917317f4 | 1762 | char *filename; |
1986bccd | 1763 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1764 | struct load_section_data cbdata; |
a76d924d DJ |
1765 | struct load_progress_data total_progress; |
1766 | ||
e4f9b4d5 | 1767 | CORE_ADDR entry; |
1986bccd | 1768 | char **argv; |
e4f9b4d5 | 1769 | |
a76d924d DJ |
1770 | memset (&cbdata, 0, sizeof (cbdata)); |
1771 | memset (&total_progress, 0, sizeof (total_progress)); | |
1772 | cbdata.progress_data = &total_progress; | |
1773 | ||
1774 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1775 | |
1986bccd AS |
1776 | argv = buildargv (args); |
1777 | ||
1778 | if (argv == NULL) | |
1779 | nomem(0); | |
1780 | ||
1781 | make_cleanup_freeargv (argv); | |
1782 | ||
1783 | filename = tilde_expand (argv[0]); | |
1784 | make_cleanup (xfree, filename); | |
1785 | ||
1786 | if (argv[1] != NULL) | |
917317f4 JM |
1787 | { |
1788 | char *endptr; | |
ba5f2f8a | 1789 | |
1986bccd AS |
1790 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1791 | ||
1792 | /* If the last word was not a valid number then | |
1793 | treat it as a file name with spaces in. */ | |
1794 | if (argv[1] == endptr) | |
1795 | error (_("Invalid download offset:%s."), argv[1]); | |
1796 | ||
1797 | if (argv[2] != NULL) | |
1798 | error (_("Too many parameters.")); | |
917317f4 | 1799 | } |
c906108c | 1800 | |
917317f4 | 1801 | /* Open the file for loading. */ |
c906108c SS |
1802 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1803 | if (loadfile_bfd == NULL) | |
1804 | { | |
1805 | perror_with_name (filename); | |
1806 | return; | |
1807 | } | |
917317f4 | 1808 | |
c906108c SS |
1809 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1810 | on error it does not free all the storage associated with the | |
1811 | bfd). */ | |
5c65bbb6 | 1812 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1813 | |
c5aa993b | 1814 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1815 | { |
8a3fe4f8 | 1816 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1817 | bfd_errmsg (bfd_get_error ())); |
1818 | } | |
c5aa993b | 1819 | |
5417f6dc | 1820 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1821 | (void *) &total_progress.total_size); |
1822 | ||
1823 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1824 | |
2b71414d | 1825 | gettimeofday (&start_time, NULL); |
c906108c | 1826 | |
a76d924d DJ |
1827 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1828 | load_progress) != 0) | |
1829 | error (_("Load failed")); | |
c906108c | 1830 | |
2b71414d | 1831 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1832 | |
e4f9b4d5 | 1833 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1834 | ui_out_text (uiout, "Start address "); |
1835 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1836 | ui_out_text (uiout, ", load size "); | |
a76d924d | 1837 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 1838 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
1839 | /* We were doing this in remote-mips.c, I suspect it is right |
1840 | for other targets too. */ | |
1841 | write_pc (entry); | |
c906108c | 1842 | |
7ca9f392 AC |
1843 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1844 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1845 | was commented out), making the call confuses GDB if more than one | |
1846 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 1847 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 1848 | |
a76d924d DJ |
1849 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
1850 | total_progress.write_count, | |
1851 | &start_time, &end_time); | |
c906108c SS |
1852 | |
1853 | do_cleanups (old_cleanups); | |
1854 | } | |
1855 | ||
1856 | /* Report how fast the transfer went. */ | |
1857 | ||
917317f4 JM |
1858 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1859 | replaced by print_transfer_performance (with a very different | |
1860 | function signature). */ | |
1861 | ||
c906108c | 1862 | void |
fba45db2 KB |
1863 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1864 | time_t end_time) | |
c906108c | 1865 | { |
2b71414d DJ |
1866 | struct timeval start, end; |
1867 | ||
1868 | start.tv_sec = start_time; | |
1869 | start.tv_usec = 0; | |
1870 | end.tv_sec = end_time; | |
1871 | end.tv_usec = 0; | |
1872 | ||
1873 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
1874 | } |
1875 | ||
1876 | void | |
d9fcf2fb | 1877 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1878 | unsigned long data_count, |
1879 | unsigned long write_count, | |
2b71414d DJ |
1880 | const struct timeval *start_time, |
1881 | const struct timeval *end_time) | |
917317f4 | 1882 | { |
2b71414d DJ |
1883 | unsigned long time_count; |
1884 | ||
1885 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
1886 | accuracy and overflow. */ | |
1887 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
1888 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
1889 | ||
8b93c638 JM |
1890 | ui_out_text (uiout, "Transfer rate: "); |
1891 | if (time_count > 0) | |
1892 | { | |
5417f6dc | 1893 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
2b71414d | 1894 | 1000 * (data_count * 8) / time_count); |
8b93c638 JM |
1895 | ui_out_text (uiout, " bits/sec"); |
1896 | } | |
1897 | else | |
1898 | { | |
ba5f2f8a | 1899 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 1900 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
1901 | } |
1902 | if (write_count > 0) | |
1903 | { | |
1904 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1905 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1906 | ui_out_text (uiout, " bytes/write"); |
1907 | } | |
1908 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1909 | } |
1910 | ||
1911 | /* This function allows the addition of incrementally linked object files. | |
1912 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1913 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1914 | special case syntax for the rombug target (Rombug is the boot | |
1915 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1916 | rombug case, the user doesn't need to supply a text address, | |
1917 | instead a call to target_link() (in target.c) would supply the | |
1918 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 1919 | |
c906108c | 1920 | static void |
fba45db2 | 1921 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1922 | { |
db162d44 | 1923 | char *filename = NULL; |
2df3850c | 1924 | int flags = OBJF_USERLOADED; |
c906108c | 1925 | char *arg; |
2acceee2 | 1926 | int expecting_option = 0; |
db162d44 | 1927 | int section_index = 0; |
2acceee2 JM |
1928 | int argcnt = 0; |
1929 | int sec_num = 0; | |
1930 | int i; | |
db162d44 EZ |
1931 | int expecting_sec_name = 0; |
1932 | int expecting_sec_addr = 0; | |
5b96932b | 1933 | char **argv; |
db162d44 | 1934 | |
a39a16c4 | 1935 | struct sect_opt |
2acceee2 | 1936 | { |
2acceee2 JM |
1937 | char *name; |
1938 | char *value; | |
a39a16c4 | 1939 | }; |
db162d44 | 1940 | |
a39a16c4 MM |
1941 | struct section_addr_info *section_addrs; |
1942 | struct sect_opt *sect_opts = NULL; | |
1943 | size_t num_sect_opts = 0; | |
3017564a | 1944 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1945 | |
a39a16c4 | 1946 | num_sect_opts = 16; |
5417f6dc | 1947 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
1948 | * sizeof (struct sect_opt)); |
1949 | ||
c906108c SS |
1950 | dont_repeat (); |
1951 | ||
1952 | if (args == NULL) | |
8a3fe4f8 | 1953 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 1954 | |
5b96932b AS |
1955 | argv = buildargv (args); |
1956 | make_cleanup_freeargv (argv); | |
db162d44 | 1957 | |
5b96932b AS |
1958 | if (argv == NULL) |
1959 | nomem (0); | |
db162d44 | 1960 | |
5b96932b AS |
1961 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
1962 | { | |
1963 | /* Process the argument. */ | |
db162d44 | 1964 | if (argcnt == 0) |
c906108c | 1965 | { |
db162d44 EZ |
1966 | /* The first argument is the file name. */ |
1967 | filename = tilde_expand (arg); | |
3017564a | 1968 | make_cleanup (xfree, filename); |
c906108c | 1969 | } |
db162d44 | 1970 | else |
7a78ae4e ND |
1971 | if (argcnt == 1) |
1972 | { | |
1973 | /* The second argument is always the text address at which | |
1974 | to load the program. */ | |
1975 | sect_opts[section_index].name = ".text"; | |
1976 | sect_opts[section_index].value = arg; | |
f414f22f | 1977 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
1978 | { |
1979 | num_sect_opts *= 2; | |
5417f6dc | 1980 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 1981 | xrealloc (sect_opts, |
5417f6dc | 1982 | num_sect_opts |
a39a16c4 MM |
1983 | * sizeof (struct sect_opt))); |
1984 | } | |
7a78ae4e ND |
1985 | } |
1986 | else | |
1987 | { | |
1988 | /* It's an option (starting with '-') or it's an argument | |
1989 | to an option */ | |
1990 | ||
1991 | if (*arg == '-') | |
1992 | { | |
78a4a9b9 AC |
1993 | if (strcmp (arg, "-readnow") == 0) |
1994 | flags |= OBJF_READNOW; | |
1995 | else if (strcmp (arg, "-s") == 0) | |
1996 | { | |
1997 | expecting_sec_name = 1; | |
1998 | expecting_sec_addr = 1; | |
1999 | } | |
7a78ae4e ND |
2000 | } |
2001 | else | |
2002 | { | |
2003 | if (expecting_sec_name) | |
db162d44 | 2004 | { |
7a78ae4e ND |
2005 | sect_opts[section_index].name = arg; |
2006 | expecting_sec_name = 0; | |
db162d44 EZ |
2007 | } |
2008 | else | |
7a78ae4e ND |
2009 | if (expecting_sec_addr) |
2010 | { | |
2011 | sect_opts[section_index].value = arg; | |
2012 | expecting_sec_addr = 0; | |
f414f22f | 2013 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2014 | { |
2015 | num_sect_opts *= 2; | |
5417f6dc | 2016 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2017 | xrealloc (sect_opts, |
5417f6dc | 2018 | num_sect_opts |
a39a16c4 MM |
2019 | * sizeof (struct sect_opt))); |
2020 | } | |
7a78ae4e ND |
2021 | } |
2022 | else | |
8a3fe4f8 | 2023 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2024 | } |
2025 | } | |
c906108c | 2026 | } |
c906108c | 2027 | |
927890d0 JB |
2028 | /* This command takes at least two arguments. The first one is a |
2029 | filename, and the second is the address where this file has been | |
2030 | loaded. Abort now if this address hasn't been provided by the | |
2031 | user. */ | |
2032 | if (section_index < 1) | |
2033 | error (_("The address where %s has been loaded is missing"), filename); | |
2034 | ||
db162d44 EZ |
2035 | /* Print the prompt for the query below. And save the arguments into |
2036 | a sect_addr_info structure to be passed around to other | |
2037 | functions. We have to split this up into separate print | |
bb599908 | 2038 | statements because hex_string returns a local static |
db162d44 | 2039 | string. */ |
5417f6dc | 2040 | |
a3f17187 | 2041 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2042 | section_addrs = alloc_section_addr_info (section_index); |
2043 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2044 | for (i = 0; i < section_index; i++) |
c906108c | 2045 | { |
db162d44 EZ |
2046 | CORE_ADDR addr; |
2047 | char *val = sect_opts[i].value; | |
2048 | char *sec = sect_opts[i].name; | |
5417f6dc | 2049 | |
ae822768 | 2050 | addr = parse_and_eval_address (val); |
db162d44 | 2051 | |
db162d44 EZ |
2052 | /* Here we store the section offsets in the order they were |
2053 | entered on the command line. */ | |
a39a16c4 MM |
2054 | section_addrs->other[sec_num].name = sec; |
2055 | section_addrs->other[sec_num].addr = addr; | |
46f45a4a | 2056 | printf_unfiltered ("\t%s_addr = %s\n", |
bb599908 | 2057 | sec, hex_string ((unsigned long)addr)); |
db162d44 EZ |
2058 | sec_num++; |
2059 | ||
5417f6dc | 2060 | /* The object's sections are initialized when a |
db162d44 | 2061 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2062 | This happens in reread_symbols. |
db162d44 EZ |
2063 | At this point, we don't know what file type this is, |
2064 | so we can't determine what section names are valid. */ | |
2acceee2 | 2065 | } |
db162d44 | 2066 | |
2acceee2 | 2067 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2068 | error (_("Not confirmed.")); |
c906108c | 2069 | |
a39a16c4 | 2070 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); |
c906108c SS |
2071 | |
2072 | /* Getting new symbols may change our opinion about what is | |
2073 | frameless. */ | |
2074 | reinit_frame_cache (); | |
db162d44 | 2075 | do_cleanups (my_cleanups); |
c906108c SS |
2076 | } |
2077 | \f | |
2078 | static void | |
fba45db2 | 2079 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
2080 | { |
2081 | #ifdef ADD_SHARED_SYMBOL_FILES | |
2082 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
2083 | #else | |
8a3fe4f8 | 2084 | error (_("This command is not available in this configuration of GDB.")); |
c5aa993b | 2085 | #endif |
c906108c SS |
2086 | } |
2087 | \f | |
2088 | /* Re-read symbols if a symbol-file has changed. */ | |
2089 | void | |
fba45db2 | 2090 | reread_symbols (void) |
c906108c SS |
2091 | { |
2092 | struct objfile *objfile; | |
2093 | long new_modtime; | |
2094 | int reread_one = 0; | |
2095 | struct stat new_statbuf; | |
2096 | int res; | |
2097 | ||
2098 | /* With the addition of shared libraries, this should be modified, | |
2099 | the load time should be saved in the partial symbol tables, since | |
2100 | different tables may come from different source files. FIXME. | |
2101 | This routine should then walk down each partial symbol table | |
2102 | and see if the symbol table that it originates from has been changed */ | |
2103 | ||
c5aa993b JM |
2104 | for (objfile = object_files; objfile; objfile = objfile->next) |
2105 | { | |
2106 | if (objfile->obfd) | |
2107 | { | |
52d16ba8 | 2108 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
2109 | /* If this object is from a shared library, then you should |
2110 | stat on the library name, not member name. */ | |
c906108c | 2111 | |
c5aa993b JM |
2112 | if (objfile->obfd->my_archive) |
2113 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2114 | else | |
c906108c | 2115 | #endif |
c5aa993b JM |
2116 | res = stat (objfile->name, &new_statbuf); |
2117 | if (res != 0) | |
c906108c | 2118 | { |
c5aa993b | 2119 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
a3f17187 | 2120 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
c5aa993b JM |
2121 | objfile->name); |
2122 | continue; | |
c906108c | 2123 | } |
c5aa993b JM |
2124 | new_modtime = new_statbuf.st_mtime; |
2125 | if (new_modtime != objfile->mtime) | |
c906108c | 2126 | { |
c5aa993b JM |
2127 | struct cleanup *old_cleanups; |
2128 | struct section_offsets *offsets; | |
2129 | int num_offsets; | |
c5aa993b JM |
2130 | char *obfd_filename; |
2131 | ||
a3f17187 | 2132 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), |
c5aa993b JM |
2133 | objfile->name); |
2134 | ||
2135 | /* There are various functions like symbol_file_add, | |
2136 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2137 | appear to do what we want. But they have various other | |
2138 | effects which we *don't* want. So we just do stuff | |
2139 | ourselves. We don't worry about mapped files (for one thing, | |
2140 | any mapped file will be out of date). */ | |
2141 | ||
2142 | /* If we get an error, blow away this objfile (not sure if | |
2143 | that is the correct response for things like shared | |
2144 | libraries). */ | |
74b7792f | 2145 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 2146 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 2147 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
2148 | |
2149 | /* Clean up any state BFD has sitting around. We don't need | |
2150 | to close the descriptor but BFD lacks a way of closing the | |
2151 | BFD without closing the descriptor. */ | |
2152 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2153 | if (!bfd_close (objfile->obfd)) | |
8a3fe4f8 | 2154 | error (_("Can't close BFD for %s: %s"), objfile->name, |
c5aa993b JM |
2155 | bfd_errmsg (bfd_get_error ())); |
2156 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
2157 | if (objfile->obfd == NULL) | |
8a3fe4f8 | 2158 | error (_("Can't open %s to read symbols."), objfile->name); |
c5aa993b JM |
2159 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2160 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
8a3fe4f8 | 2161 | error (_("Can't read symbols from %s: %s."), objfile->name, |
c5aa993b JM |
2162 | bfd_errmsg (bfd_get_error ())); |
2163 | ||
2164 | /* Save the offsets, we will nuke them with the rest of the | |
8b92e4d5 | 2165 | objfile_obstack. */ |
c5aa993b | 2166 | num_offsets = objfile->num_sections; |
5417f6dc | 2167 | offsets = ((struct section_offsets *) |
a39a16c4 | 2168 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); |
5417f6dc | 2169 | memcpy (offsets, objfile->section_offsets, |
a39a16c4 | 2170 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b | 2171 | |
ae5a43e0 DJ |
2172 | /* Remove any references to this objfile in the global |
2173 | value lists. */ | |
2174 | preserve_values (objfile); | |
2175 | ||
c5aa993b JM |
2176 | /* Nuke all the state that we will re-read. Much of the following |
2177 | code which sets things to NULL really is necessary to tell | |
2178 | other parts of GDB that there is nothing currently there. */ | |
2179 | ||
2180 | /* FIXME: Do we have to free a whole linked list, or is this | |
2181 | enough? */ | |
2182 | if (objfile->global_psymbols.list) | |
2dc74dc1 | 2183 | xfree (objfile->global_psymbols.list); |
c5aa993b JM |
2184 | memset (&objfile->global_psymbols, 0, |
2185 | sizeof (objfile->global_psymbols)); | |
2186 | if (objfile->static_psymbols.list) | |
2dc74dc1 | 2187 | xfree (objfile->static_psymbols.list); |
c5aa993b JM |
2188 | memset (&objfile->static_psymbols, 0, |
2189 | sizeof (objfile->static_psymbols)); | |
2190 | ||
2191 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
2192 | bcache_xfree (objfile->psymbol_cache); |
2193 | objfile->psymbol_cache = bcache_xmalloc (); | |
2194 | bcache_xfree (objfile->macro_cache); | |
2195 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
2196 | if (objfile->demangled_names_hash != NULL) |
2197 | { | |
2198 | htab_delete (objfile->demangled_names_hash); | |
2199 | objfile->demangled_names_hash = NULL; | |
2200 | } | |
b99607ea | 2201 | obstack_free (&objfile->objfile_obstack, 0); |
c5aa993b JM |
2202 | objfile->sections = NULL; |
2203 | objfile->symtabs = NULL; | |
2204 | objfile->psymtabs = NULL; | |
2205 | objfile->free_psymtabs = NULL; | |
a1b8c067 | 2206 | objfile->cp_namespace_symtab = NULL; |
c5aa993b | 2207 | objfile->msymbols = NULL; |
0a6ddd08 | 2208 | objfile->deprecated_sym_private = NULL; |
c5aa993b | 2209 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
2210 | memset (&objfile->msymbol_hash, 0, |
2211 | sizeof (objfile->msymbol_hash)); | |
2212 | memset (&objfile->msymbol_demangled_hash, 0, | |
2213 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b | 2214 | objfile->fundamental_types = NULL; |
7b097ae3 | 2215 | clear_objfile_data (objfile); |
c5aa993b JM |
2216 | if (objfile->sf != NULL) |
2217 | { | |
2218 | (*objfile->sf->sym_finish) (objfile); | |
2219 | } | |
2220 | ||
2221 | /* We never make this a mapped file. */ | |
2222 | objfile->md = NULL; | |
af5f3db6 AC |
2223 | objfile->psymbol_cache = bcache_xmalloc (); |
2224 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
2225 | /* obstack_init also initializes the obstack so it is |
2226 | empty. We could use obstack_specify_allocation but | |
2227 | gdb_obstack.h specifies the alloc/dealloc | |
2228 | functions. */ | |
2229 | obstack_init (&objfile->objfile_obstack); | |
c5aa993b JM |
2230 | if (build_objfile_section_table (objfile)) |
2231 | { | |
8a3fe4f8 | 2232 | error (_("Can't find the file sections in `%s': %s"), |
c5aa993b JM |
2233 | objfile->name, bfd_errmsg (bfd_get_error ())); |
2234 | } | |
15831452 | 2235 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2236 | |
2237 | /* We use the same section offsets as from last time. I'm not | |
2238 | sure whether that is always correct for shared libraries. */ | |
2239 | objfile->section_offsets = (struct section_offsets *) | |
5417f6dc | 2240 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 2241 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
5417f6dc | 2242 | memcpy (objfile->section_offsets, offsets, |
a39a16c4 | 2243 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
2244 | objfile->num_sections = num_offsets; |
2245 | ||
2246 | /* What the hell is sym_new_init for, anyway? The concept of | |
2247 | distinguishing between the main file and additional files | |
2248 | in this way seems rather dubious. */ | |
2249 | if (objfile == symfile_objfile) | |
2250 | { | |
2251 | (*objfile->sf->sym_new_init) (objfile); | |
c5aa993b JM |
2252 | } |
2253 | ||
2254 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2255 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2256 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2257 | zero is OK since dbxread.c also does what it needs to do if | |
2258 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2259 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2260 | if (!have_partial_symbols () && !have_full_symbols ()) |
2261 | { | |
2262 | wrap_here (""); | |
a3f17187 | 2263 | printf_unfiltered (_("(no debugging symbols found)\n")); |
c5aa993b JM |
2264 | wrap_here (""); |
2265 | } | |
2266 | objfile->flags |= OBJF_SYMS; | |
2267 | ||
2268 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2269 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2270 | |
c5aa993b JM |
2271 | /* Getting new symbols may change our opinion about what is |
2272 | frameless. */ | |
c906108c | 2273 | |
c5aa993b | 2274 | reinit_frame_cache (); |
c906108c | 2275 | |
c5aa993b JM |
2276 | /* Discard cleanups as symbol reading was successful. */ |
2277 | discard_cleanups (old_cleanups); | |
c906108c | 2278 | |
c5aa993b JM |
2279 | /* If the mtime has changed between the time we set new_modtime |
2280 | and now, we *want* this to be out of date, so don't call stat | |
2281 | again now. */ | |
2282 | objfile->mtime = new_modtime; | |
2283 | reread_one = 1; | |
5b5d99cf | 2284 | reread_separate_symbols (objfile); |
c5aa993b | 2285 | } |
c906108c SS |
2286 | } |
2287 | } | |
c906108c SS |
2288 | |
2289 | if (reread_one) | |
ea53e89f JB |
2290 | { |
2291 | clear_symtab_users (); | |
2292 | /* At least one objfile has changed, so we can consider that | |
2293 | the executable we're debugging has changed too. */ | |
2294 | observer_notify_executable_changed (NULL); | |
2295 | } | |
2296 | ||
c906108c | 2297 | } |
5b5d99cf JB |
2298 | |
2299 | ||
2300 | /* Handle separate debug info for OBJFILE, which has just been | |
2301 | re-read: | |
2302 | - If we had separate debug info before, but now we don't, get rid | |
2303 | of the separated objfile. | |
2304 | - If we didn't have separated debug info before, but now we do, | |
2305 | read in the new separated debug info file. | |
2306 | - If the debug link points to a different file, toss the old one | |
2307 | and read the new one. | |
2308 | This function does *not* handle the case where objfile is still | |
2309 | using the same separate debug info file, but that file's timestamp | |
2310 | has changed. That case should be handled by the loop in | |
2311 | reread_symbols already. */ | |
2312 | static void | |
2313 | reread_separate_symbols (struct objfile *objfile) | |
2314 | { | |
2315 | char *debug_file; | |
2316 | unsigned long crc32; | |
2317 | ||
2318 | /* Does the updated objfile's debug info live in a | |
2319 | separate file? */ | |
2320 | debug_file = find_separate_debug_file (objfile); | |
2321 | ||
2322 | if (objfile->separate_debug_objfile) | |
2323 | { | |
2324 | /* There are two cases where we need to get rid of | |
2325 | the old separated debug info objfile: | |
2326 | - if the new primary objfile doesn't have | |
2327 | separated debug info, or | |
2328 | - if the new primary objfile has separate debug | |
2329 | info, but it's under a different filename. | |
5417f6dc | 2330 | |
5b5d99cf JB |
2331 | If the old and new objfiles both have separate |
2332 | debug info, under the same filename, then we're | |
2333 | okay --- if the separated file's contents have | |
2334 | changed, we will have caught that when we | |
2335 | visited it in this function's outermost | |
2336 | loop. */ | |
2337 | if (! debug_file | |
2338 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2339 | free_objfile (objfile->separate_debug_objfile); | |
2340 | } | |
2341 | ||
2342 | /* If the new objfile has separate debug info, and we | |
2343 | haven't loaded it already, do so now. */ | |
2344 | if (debug_file | |
2345 | && ! objfile->separate_debug_objfile) | |
2346 | { | |
2347 | /* Use the same section offset table as objfile itself. | |
2348 | Preserve the flags from objfile that make sense. */ | |
2349 | objfile->separate_debug_objfile | |
2350 | = (symbol_file_add_with_addrs_or_offsets | |
5417f6dc | 2351 | (symfile_bfd_open (debug_file), |
5b5d99cf JB |
2352 | info_verbose, /* from_tty: Don't override the default. */ |
2353 | 0, /* No addr table. */ | |
2354 | objfile->section_offsets, objfile->num_sections, | |
2355 | 0, /* Not mainline. See comments about this above. */ | |
78a4a9b9 | 2356 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
5b5d99cf JB |
2357 | | OBJF_USERLOADED))); |
2358 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2359 | = objfile; | |
2360 | } | |
2361 | } | |
2362 | ||
2363 | ||
c906108c SS |
2364 | \f |
2365 | ||
c5aa993b JM |
2366 | |
2367 | typedef struct | |
2368 | { | |
2369 | char *ext; | |
c906108c | 2370 | enum language lang; |
c5aa993b JM |
2371 | } |
2372 | filename_language; | |
c906108c | 2373 | |
c5aa993b | 2374 | static filename_language *filename_language_table; |
c906108c SS |
2375 | static int fl_table_size, fl_table_next; |
2376 | ||
2377 | static void | |
fba45db2 | 2378 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2379 | { |
2380 | if (fl_table_next >= fl_table_size) | |
2381 | { | |
2382 | fl_table_size += 10; | |
5417f6dc | 2383 | filename_language_table = |
25bf3106 PM |
2384 | xrealloc (filename_language_table, |
2385 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2386 | } |
2387 | ||
4fcf66da | 2388 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2389 | filename_language_table[fl_table_next].lang = lang; |
2390 | fl_table_next++; | |
2391 | } | |
2392 | ||
2393 | static char *ext_args; | |
920d2a44 AC |
2394 | static void |
2395 | show_ext_args (struct ui_file *file, int from_tty, | |
2396 | struct cmd_list_element *c, const char *value) | |
2397 | { | |
2398 | fprintf_filtered (file, _("\ | |
2399 | Mapping between filename extension and source language is \"%s\".\n"), | |
2400 | value); | |
2401 | } | |
c906108c SS |
2402 | |
2403 | static void | |
26c41df3 | 2404 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2405 | { |
2406 | int i; | |
2407 | char *cp = ext_args; | |
2408 | enum language lang; | |
2409 | ||
2410 | /* First arg is filename extension, starting with '.' */ | |
2411 | if (*cp != '.') | |
8a3fe4f8 | 2412 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2413 | |
2414 | /* Find end of first arg. */ | |
c5aa993b | 2415 | while (*cp && !isspace (*cp)) |
c906108c SS |
2416 | cp++; |
2417 | ||
2418 | if (*cp == '\0') | |
8a3fe4f8 | 2419 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2420 | ext_args); |
2421 | ||
2422 | /* Null-terminate first arg */ | |
c5aa993b | 2423 | *cp++ = '\0'; |
c906108c SS |
2424 | |
2425 | /* Find beginning of second arg, which should be a source language. */ | |
2426 | while (*cp && isspace (*cp)) | |
2427 | cp++; | |
2428 | ||
2429 | if (*cp == '\0') | |
8a3fe4f8 | 2430 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2431 | ext_args); |
2432 | ||
2433 | /* Lookup the language from among those we know. */ | |
2434 | lang = language_enum (cp); | |
2435 | ||
2436 | /* Now lookup the filename extension: do we already know it? */ | |
2437 | for (i = 0; i < fl_table_next; i++) | |
2438 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2439 | break; | |
2440 | ||
2441 | if (i >= fl_table_next) | |
2442 | { | |
2443 | /* new file extension */ | |
2444 | add_filename_language (ext_args, lang); | |
2445 | } | |
2446 | else | |
2447 | { | |
2448 | /* redefining a previously known filename extension */ | |
2449 | ||
2450 | /* if (from_tty) */ | |
2451 | /* query ("Really make files of type %s '%s'?", */ | |
2452 | /* ext_args, language_str (lang)); */ | |
2453 | ||
b8c9b27d | 2454 | xfree (filename_language_table[i].ext); |
4fcf66da | 2455 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2456 | filename_language_table[i].lang = lang; |
2457 | } | |
2458 | } | |
2459 | ||
2460 | static void | |
fba45db2 | 2461 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2462 | { |
2463 | int i; | |
2464 | ||
a3f17187 | 2465 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2466 | printf_filtered ("\n\n"); |
2467 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2468 | printf_filtered ("\t%s\t- %s\n", |
2469 | filename_language_table[i].ext, | |
c906108c SS |
2470 | language_str (filename_language_table[i].lang)); |
2471 | } | |
2472 | ||
2473 | static void | |
fba45db2 | 2474 | init_filename_language_table (void) |
c906108c SS |
2475 | { |
2476 | if (fl_table_size == 0) /* protect against repetition */ | |
2477 | { | |
2478 | fl_table_size = 20; | |
2479 | fl_table_next = 0; | |
c5aa993b | 2480 | filename_language_table = |
c906108c | 2481 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2482 | add_filename_language (".c", language_c); |
2483 | add_filename_language (".C", language_cplus); | |
2484 | add_filename_language (".cc", language_cplus); | |
2485 | add_filename_language (".cp", language_cplus); | |
2486 | add_filename_language (".cpp", language_cplus); | |
2487 | add_filename_language (".cxx", language_cplus); | |
2488 | add_filename_language (".c++", language_cplus); | |
2489 | add_filename_language (".java", language_java); | |
c906108c | 2490 | add_filename_language (".class", language_java); |
da2cf7e0 | 2491 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2492 | add_filename_language (".f", language_fortran); |
2493 | add_filename_language (".F", language_fortran); | |
2494 | add_filename_language (".s", language_asm); | |
2495 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
2496 | add_filename_language (".pas", language_pascal); |
2497 | add_filename_language (".p", language_pascal); | |
2498 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2499 | add_filename_language (".adb", language_ada); |
2500 | add_filename_language (".ads", language_ada); | |
2501 | add_filename_language (".a", language_ada); | |
2502 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2503 | } |
2504 | } | |
2505 | ||
2506 | enum language | |
fba45db2 | 2507 | deduce_language_from_filename (char *filename) |
c906108c SS |
2508 | { |
2509 | int i; | |
2510 | char *cp; | |
2511 | ||
2512 | if (filename != NULL) | |
2513 | if ((cp = strrchr (filename, '.')) != NULL) | |
2514 | for (i = 0; i < fl_table_next; i++) | |
2515 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2516 | return filename_language_table[i].lang; | |
2517 | ||
2518 | return language_unknown; | |
2519 | } | |
2520 | \f | |
2521 | /* allocate_symtab: | |
2522 | ||
2523 | Allocate and partly initialize a new symbol table. Return a pointer | |
2524 | to it. error() if no space. | |
2525 | ||
2526 | Caller must set these fields: | |
c5aa993b JM |
2527 | LINETABLE(symtab) |
2528 | symtab->blockvector | |
2529 | symtab->dirname | |
2530 | symtab->free_code | |
2531 | symtab->free_ptr | |
2532 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2533 | */ |
2534 | ||
2535 | struct symtab * | |
fba45db2 | 2536 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2537 | { |
52f0bd74 | 2538 | struct symtab *symtab; |
c906108c SS |
2539 | |
2540 | symtab = (struct symtab *) | |
4a146b47 | 2541 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2542 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b | 2543 | symtab->filename = obsavestring (filename, strlen (filename), |
4a146b47 | 2544 | &objfile->objfile_obstack); |
c5aa993b JM |
2545 | symtab->fullname = NULL; |
2546 | symtab->language = deduce_language_from_filename (filename); | |
2547 | symtab->debugformat = obsavestring ("unknown", 7, | |
4a146b47 | 2548 | &objfile->objfile_obstack); |
c906108c SS |
2549 | |
2550 | /* Hook it to the objfile it comes from */ | |
2551 | ||
c5aa993b JM |
2552 | symtab->objfile = objfile; |
2553 | symtab->next = objfile->symtabs; | |
2554 | objfile->symtabs = symtab; | |
c906108c | 2555 | |
c906108c SS |
2556 | return (symtab); |
2557 | } | |
2558 | ||
2559 | struct partial_symtab * | |
fba45db2 | 2560 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2561 | { |
2562 | struct partial_symtab *psymtab; | |
2563 | ||
c5aa993b | 2564 | if (objfile->free_psymtabs) |
c906108c | 2565 | { |
c5aa993b JM |
2566 | psymtab = objfile->free_psymtabs; |
2567 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2568 | } |
2569 | else | |
2570 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2571 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2572 | sizeof (struct partial_symtab)); |
2573 | ||
2574 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b | 2575 | psymtab->filename = obsavestring (filename, strlen (filename), |
8b92e4d5 | 2576 | &objfile->objfile_obstack); |
c5aa993b | 2577 | psymtab->symtab = NULL; |
c906108c SS |
2578 | |
2579 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2580 | Psymtabs are searched in most recent inserted -> least recent | |
2581 | inserted order. */ | |
2582 | ||
c5aa993b JM |
2583 | psymtab->objfile = objfile; |
2584 | psymtab->next = objfile->psymtabs; | |
2585 | objfile->psymtabs = psymtab; | |
c906108c SS |
2586 | #if 0 |
2587 | { | |
2588 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2589 | psymtab->objfile = objfile; |
2590 | psymtab->next = NULL; | |
2591 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2592 | while ((*prev_pst) != NULL) |
c5aa993b | 2593 | prev_pst = &((*prev_pst)->next); |
c906108c | 2594 | (*prev_pst) = psymtab; |
c5aa993b | 2595 | } |
c906108c | 2596 | #endif |
c5aa993b | 2597 | |
c906108c SS |
2598 | return (psymtab); |
2599 | } | |
2600 | ||
2601 | void | |
fba45db2 | 2602 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2603 | { |
2604 | struct partial_symtab **prev_pst; | |
2605 | ||
2606 | /* From dbxread.c: | |
2607 | Empty psymtabs happen as a result of header files which don't | |
2608 | have any symbols in them. There can be a lot of them. But this | |
2609 | check is wrong, in that a psymtab with N_SLINE entries but | |
2610 | nothing else is not empty, but we don't realize that. Fixing | |
2611 | that without slowing things down might be tricky. */ | |
2612 | ||
2613 | /* First, snip it out of the psymtab chain */ | |
2614 | ||
2615 | prev_pst = &(pst->objfile->psymtabs); | |
2616 | while ((*prev_pst) != pst) | |
2617 | prev_pst = &((*prev_pst)->next); | |
2618 | (*prev_pst) = pst->next; | |
2619 | ||
2620 | /* Next, put it on a free list for recycling */ | |
2621 | ||
2622 | pst->next = pst->objfile->free_psymtabs; | |
2623 | pst->objfile->free_psymtabs = pst; | |
2624 | } | |
c906108c | 2625 | \f |
c5aa993b | 2626 | |
c906108c SS |
2627 | /* Reset all data structures in gdb which may contain references to symbol |
2628 | table data. */ | |
2629 | ||
2630 | void | |
fba45db2 | 2631 | clear_symtab_users (void) |
c906108c SS |
2632 | { |
2633 | /* Someday, we should do better than this, by only blowing away | |
2634 | the things that really need to be blown. */ | |
c0501be5 DJ |
2635 | |
2636 | /* Clear the "current" symtab first, because it is no longer valid. | |
2637 | breakpoint_re_set may try to access the current symtab. */ | |
2638 | clear_current_source_symtab_and_line (); | |
2639 | ||
c906108c | 2640 | clear_displays (); |
c906108c SS |
2641 | breakpoint_re_set (); |
2642 | set_default_breakpoint (0, 0, 0, 0); | |
c906108c | 2643 | clear_pc_function_cache (); |
06d3b283 | 2644 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2645 | |
2646 | /* Clear globals which might have pointed into a removed objfile. | |
2647 | FIXME: It's not clear which of these are supposed to persist | |
2648 | between expressions and which ought to be reset each time. */ | |
2649 | expression_context_block = NULL; | |
2650 | innermost_block = NULL; | |
8756216b DP |
2651 | |
2652 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2653 | varobj_invalidate (); | |
2654 | ||
c906108c SS |
2655 | } |
2656 | ||
74b7792f AC |
2657 | static void |
2658 | clear_symtab_users_cleanup (void *ignore) | |
2659 | { | |
2660 | clear_symtab_users (); | |
2661 | } | |
2662 | ||
c906108c SS |
2663 | /* clear_symtab_users_once: |
2664 | ||
2665 | This function is run after symbol reading, or from a cleanup. | |
2666 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2667 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2668 | reference it have not yet been cleared or re-directed. (The old |
2669 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2670 | below.) | |
2671 | ||
2672 | This function can be queued N times as a cleanup, or called | |
2673 | directly; it will do all the work the first time, and then will be a | |
2674 | no-op until the next time it is queued. This works by bumping a | |
2675 | counter at queueing time. Much later when the cleanup is run, or at | |
2676 | the end of symbol processing (in case the cleanup is discarded), if | |
2677 | the queued count is greater than the "done-count", we do the work | |
2678 | and set the done-count to the queued count. If the queued count is | |
2679 | less than or equal to the done-count, we just ignore the call. This | |
2680 | is needed because reading a single .o file will often replace many | |
2681 | symtabs (one per .h file, for example), and we don't want to reset | |
2682 | the breakpoints N times in the user's face. | |
2683 | ||
2684 | The reason we both queue a cleanup, and call it directly after symbol | |
2685 | reading, is because the cleanup protects us in case of errors, but is | |
2686 | discarded if symbol reading is successful. */ | |
2687 | ||
2688 | #if 0 | |
2689 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2690 | is no longer needed. */ | |
a14ed312 | 2691 | static void clear_symtab_users_once (void); |
c906108c SS |
2692 | |
2693 | static int clear_symtab_users_queued; | |
2694 | static int clear_symtab_users_done; | |
2695 | ||
2696 | static void | |
fba45db2 | 2697 | clear_symtab_users_once (void) |
c906108c SS |
2698 | { |
2699 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2700 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2701 | return; | |
2702 | clear_symtab_users_done = clear_symtab_users_queued; | |
2703 | ||
2704 | clear_symtab_users (); | |
2705 | } | |
2706 | #endif | |
2707 | ||
2708 | /* Delete the specified psymtab, and any others that reference it. */ | |
2709 | ||
2710 | static void | |
fba45db2 | 2711 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2712 | { |
2713 | struct partial_symtab *ps, *pprev = NULL; | |
2714 | int i; | |
2715 | ||
2716 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2717 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2718 | { | |
2719 | if (ps == pst) | |
2720 | break; | |
2721 | pprev = ps; | |
2722 | } | |
c906108c | 2723 | |
c5aa993b JM |
2724 | if (ps) |
2725 | { | |
2726 | /* Unhook it from the chain. */ | |
2727 | if (ps == pst->objfile->psymtabs) | |
2728 | pst->objfile->psymtabs = ps->next; | |
2729 | else | |
2730 | pprev->next = ps->next; | |
2731 | ||
2732 | /* FIXME, we can't conveniently deallocate the entries in the | |
2733 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2734 | this psymtab points to. These just take up space until all | |
2735 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2736 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2737 | |
2738 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2739 | again: | |
2740 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2741 | { | |
2742 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2743 | { | |
2744 | if (ps->dependencies[i] == pst) | |
2745 | { | |
2746 | cashier_psymtab (ps); | |
2747 | goto again; /* Must restart, chain has been munged. */ | |
2748 | } | |
2749 | } | |
c906108c | 2750 | } |
c906108c | 2751 | } |
c906108c SS |
2752 | } |
2753 | ||
2754 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2755 | with any dependent breakpoints, displays, etc. | |
2756 | Used when loading new versions of object modules with the "add-file" | |
2757 | command. This is only called on the top-level symtab or psymtab's name; | |
2758 | it is not called for subsidiary files such as .h files. | |
2759 | ||
2760 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2761 | FIXME. The return value appears to never be used. |
c906108c SS |
2762 | |
2763 | FIXME. I think this is not the best way to do this. We should | |
2764 | work on being gentler to the environment while still cleaning up | |
2765 | all stray pointers into the freed symtab. */ | |
2766 | ||
2767 | int | |
fba45db2 | 2768 | free_named_symtabs (char *name) |
c906108c SS |
2769 | { |
2770 | #if 0 | |
2771 | /* FIXME: With the new method of each objfile having it's own | |
2772 | psymtab list, this function needs serious rethinking. In particular, | |
2773 | why was it ever necessary to toss psymtabs with specific compilation | |
2774 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2775 | file? -- fnf | |
2776 | Well, the answer is that some systems permit reloading of particular | |
2777 | compilation units. We want to blow away any old info about these | |
2778 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2779 | ||
52f0bd74 AC |
2780 | struct symtab *s; |
2781 | struct symtab *prev; | |
2782 | struct partial_symtab *ps; | |
c906108c SS |
2783 | struct blockvector *bv; |
2784 | int blewit = 0; | |
2785 | ||
2786 | /* We only wack things if the symbol-reload switch is set. */ | |
2787 | if (!symbol_reloading) | |
2788 | return 0; | |
2789 | ||
2790 | /* Some symbol formats have trouble providing file names... */ | |
2791 | if (name == 0 || *name == '\0') | |
2792 | return 0; | |
2793 | ||
2794 | /* Look for a psymtab with the specified name. */ | |
2795 | ||
2796 | again2: | |
c5aa993b JM |
2797 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2798 | { | |
6314a349 | 2799 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2800 | { |
2801 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2802 | goto again2; /* Must restart, chain has been munged */ | |
2803 | } | |
c906108c | 2804 | } |
c906108c SS |
2805 | |
2806 | /* Look for a symtab with the specified name. */ | |
2807 | ||
2808 | for (s = symtab_list; s; s = s->next) | |
2809 | { | |
6314a349 | 2810 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2811 | break; |
2812 | prev = s; | |
2813 | } | |
2814 | ||
2815 | if (s) | |
2816 | { | |
2817 | if (s == symtab_list) | |
2818 | symtab_list = s->next; | |
2819 | else | |
2820 | prev->next = s->next; | |
2821 | ||
2822 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2823 | or not they depend on the symtab being freed. This should be |
2824 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2825 | |
2826 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2827 | This test is necessary due to a bug in "dbxread.c" that |
2828 | causes empty symtabs to be created for N_SO symbols that | |
2829 | contain the pathname of the object file. (This problem | |
2830 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2831 | |
2832 | bv = BLOCKVECTOR (s); | |
2833 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2834 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2835 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2836 | { | |
e2e0b3e5 | 2837 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 2838 | name); |
c906108c SS |
2839 | clear_symtab_users_queued++; |
2840 | make_cleanup (clear_symtab_users_once, 0); | |
2841 | blewit = 1; | |
c5aa993b JM |
2842 | } |
2843 | else | |
e2e0b3e5 AC |
2844 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
2845 | name); | |
c906108c SS |
2846 | |
2847 | free_symtab (s); | |
2848 | } | |
2849 | else | |
2850 | { | |
2851 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2852 | even though no symtab was found, since the file might have |
2853 | been compiled without debugging, and hence not be associated | |
2854 | with a symtab. In order to handle this correctly, we would need | |
2855 | to keep a list of text address ranges for undebuggable files. | |
2856 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2857 | ; |
2858 | } | |
2859 | ||
2860 | /* FIXME, what about the minimal symbol table? */ | |
2861 | return blewit; | |
2862 | #else | |
2863 | return (0); | |
2864 | #endif | |
2865 | } | |
2866 | \f | |
2867 | /* Allocate and partially fill a partial symtab. It will be | |
2868 | completely filled at the end of the symbol list. | |
2869 | ||
d4f3574e | 2870 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2871 | |
2872 | struct partial_symtab * | |
fba45db2 KB |
2873 | start_psymtab_common (struct objfile *objfile, |
2874 | struct section_offsets *section_offsets, char *filename, | |
2875 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2876 | struct partial_symbol **static_syms) | |
c906108c SS |
2877 | { |
2878 | struct partial_symtab *psymtab; | |
2879 | ||
2880 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2881 | psymtab->section_offsets = section_offsets; |
2882 | psymtab->textlow = textlow; | |
2883 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2884 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2885 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2886 | return (psymtab); |
2887 | } | |
2888 | \f | |
2889 | /* Add a symbol with a long value to a psymtab. | |
5417f6dc | 2890 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
2891 | Return the partial symbol that has been added. */ |
2892 | ||
2893 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
2894 | symbol is so that callers can get access to the symbol's demangled | |
2895 | name, which they don't have any cheap way to determine otherwise. | |
2896 | (Currenly, dwarf2read.c is the only file who uses that information, | |
2897 | though it's possible that other readers might in the future.) | |
2898 | Elena wasn't thrilled about that, and I don't blame her, but we | |
2899 | couldn't come up with a better way to get that information. If | |
2900 | it's needed in other situations, we could consider breaking up | |
2901 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
2902 | cache. */ | |
2903 | ||
2904 | const struct partial_symbol * | |
176620f1 | 2905 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 KB |
2906 | enum address_class class, |
2907 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2908 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2909 | enum language language, struct objfile *objfile) | |
c906108c | 2910 | { |
52f0bd74 | 2911 | struct partial_symbol *psym; |
c906108c SS |
2912 | char *buf = alloca (namelength + 1); |
2913 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2914 | structure which might contain random data, causing cache misses in | |
2915 | bcache. */ | |
2916 | static struct partial_symbol psymbol; | |
2917 | ||
2918 | /* Create local copy of the partial symbol */ | |
2919 | memcpy (buf, name, namelength); | |
2920 | buf[namelength] = '\0'; | |
c906108c SS |
2921 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2922 | if (val != 0) | |
2923 | { | |
2924 | SYMBOL_VALUE (&psymbol) = val; | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2929 | } | |
2930 | SYMBOL_SECTION (&psymbol) = 0; | |
2931 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2932 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c | 2933 | PSYMBOL_CLASS (&psymbol) = class; |
2de7ced7 DJ |
2934 | |
2935 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
c906108c SS |
2936 | |
2937 | /* Stash the partial symbol away in the cache */ | |
3a16a68c AC |
2938 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), |
2939 | objfile->psymbol_cache); | |
c906108c SS |
2940 | |
2941 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2942 | if (list->next >= list->list + list->size) | |
2943 | { | |
2944 | extend_psymbol_list (list, objfile); | |
2945 | } | |
2946 | *list->next++ = psym; | |
2947 | OBJSTAT (objfile, n_psyms++); | |
5c4e30ca DC |
2948 | |
2949 | return psym; | |
c906108c SS |
2950 | } |
2951 | ||
c906108c SS |
2952 | /* Initialize storage for partial symbols. */ |
2953 | ||
2954 | void | |
fba45db2 | 2955 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2956 | { |
2957 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2958 | |
2959 | if (objfile->global_psymbols.list) | |
c906108c | 2960 | { |
2dc74dc1 | 2961 | xfree (objfile->global_psymbols.list); |
c906108c | 2962 | } |
c5aa993b | 2963 | if (objfile->static_psymbols.list) |
c906108c | 2964 | { |
2dc74dc1 | 2965 | xfree (objfile->static_psymbols.list); |
c906108c | 2966 | } |
c5aa993b | 2967 | |
c906108c SS |
2968 | /* Current best guess is that approximately a twentieth |
2969 | of the total symbols (in a debugging file) are global or static | |
2970 | oriented symbols */ | |
c906108c | 2971 | |
c5aa993b JM |
2972 | objfile->global_psymbols.size = total_symbols / 10; |
2973 | objfile->static_psymbols.size = total_symbols / 10; | |
2974 | ||
2975 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2976 | { |
c5aa993b JM |
2977 | objfile->global_psymbols.next = |
2978 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
2979 | xmalloc ((objfile->global_psymbols.size |
2980 | * sizeof (struct partial_symbol *))); | |
c906108c | 2981 | } |
c5aa993b | 2982 | if (objfile->static_psymbols.size > 0) |
c906108c | 2983 | { |
c5aa993b JM |
2984 | objfile->static_psymbols.next = |
2985 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
2986 | xmalloc ((objfile->static_psymbols.size |
2987 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2988 | } |
2989 | } | |
2990 | ||
2991 | /* OVERLAYS: | |
2992 | The following code implements an abstraction for debugging overlay sections. | |
2993 | ||
2994 | The target model is as follows: | |
2995 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2996 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2997 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2998 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2999 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3000 | sections should be considered to be mapped from the VMA to the LMA. |
3001 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3002 | For instance, if a section has been mapped then its contents |
c5aa993b | 3003 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3004 | |
3005 | Two levels of debugger support for overlays are available. One is | |
3006 | "manual", in which the debugger relies on the user to tell it which | |
3007 | overlays are currently mapped. This level of support is | |
3008 | implemented entirely in the core debugger, and the information about | |
3009 | whether a section is mapped is kept in the objfile->obj_section table. | |
3010 | ||
3011 | The second level of support is "automatic", and is only available if | |
3012 | the target-specific code provides functionality to read the target's | |
3013 | overlay mapping table, and translate its contents for the debugger | |
3014 | (by updating the mapped state information in the obj_section tables). | |
3015 | ||
3016 | The interface is as follows: | |
c5aa993b JM |
3017 | User commands: |
3018 | overlay map <name> -- tell gdb to consider this section mapped | |
3019 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3020 | overlay list -- list the sections that GDB thinks are mapped | |
3021 | overlay read-target -- get the target's state of what's mapped | |
3022 | overlay off/manual/auto -- set overlay debugging state | |
3023 | Functional interface: | |
3024 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3025 | section, return that section. | |
5417f6dc | 3026 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b JM |
3027 | the pc, either in its VMA or its LMA |
3028 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
3029 | section_is_overlay(sect): true if section's VMA != LMA | |
3030 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3031 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3032 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3033 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3034 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3035 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3036 | either in VMA or LMA depending on whether | |
3037 | the symbol's section is currently mapped | |
c906108c SS |
3038 | */ |
3039 | ||
3040 | /* Overlay debugging state: */ | |
3041 | ||
d874f1e2 | 3042 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
3043 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
3044 | ||
c906108c | 3045 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3046 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3047 | SECTION is loaded at an address different from where it will "run". */ |
3048 | ||
3049 | int | |
fba45db2 | 3050 | section_is_overlay (asection *section) |
c906108c | 3051 | { |
fbd35540 MS |
3052 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3053 | ||
c906108c SS |
3054 | if (overlay_debugging) |
3055 | if (section && section->lma != 0 && | |
3056 | section->vma != section->lma) | |
3057 | return 1; | |
3058 | ||
3059 | return 0; | |
3060 | } | |
3061 | ||
3062 | /* Function: overlay_invalidate_all (void) | |
3063 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3064 | ||
3065 | static void | |
fba45db2 | 3066 | overlay_invalidate_all (void) |
c906108c | 3067 | { |
c5aa993b | 3068 | struct objfile *objfile; |
c906108c SS |
3069 | struct obj_section *sect; |
3070 | ||
3071 | ALL_OBJSECTIONS (objfile, sect) | |
3072 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 3073 | sect->ovly_mapped = -1; |
c906108c SS |
3074 | } |
3075 | ||
3076 | /* Function: overlay_is_mapped (SECTION) | |
5417f6dc | 3077 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3078 | Private: public access is thru function section_is_mapped. |
3079 | ||
3080 | Access to the ovly_mapped flag is restricted to this function, so | |
3081 | that we can do automatic update. If the global flag | |
3082 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3083 | overlay_invalidate_all. If the mapped state of the particular | |
3084 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3085 | ||
c5aa993b | 3086 | static int |
fba45db2 | 3087 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
3088 | { |
3089 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
3090 | return 0; | |
3091 | ||
c5aa993b | 3092 | switch (overlay_debugging) |
c906108c SS |
3093 | { |
3094 | default: | |
d874f1e2 | 3095 | case ovly_off: |
c5aa993b | 3096 | return 0; /* overlay debugging off */ |
d874f1e2 | 3097 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3098 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 3099 | there's really nothing useful to do here (can't really go auto) */ |
1c772458 | 3100 | if (gdbarch_overlay_update_p (current_gdbarch)) |
c906108c SS |
3101 | { |
3102 | if (overlay_cache_invalid) | |
3103 | { | |
3104 | overlay_invalidate_all (); | |
3105 | overlay_cache_invalid = 0; | |
3106 | } | |
3107 | if (osect->ovly_mapped == -1) | |
1c772458 | 3108 | gdbarch_overlay_update (current_gdbarch, osect); |
c906108c SS |
3109 | } |
3110 | /* fall thru to manual case */ | |
d874f1e2 | 3111 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3112 | return osect->ovly_mapped == 1; |
3113 | } | |
3114 | } | |
3115 | ||
3116 | /* Function: section_is_mapped | |
3117 | Returns true if section is an overlay, and is currently mapped. */ | |
3118 | ||
3119 | int | |
fba45db2 | 3120 | section_is_mapped (asection *section) |
c906108c | 3121 | { |
c5aa993b | 3122 | struct objfile *objfile; |
c906108c SS |
3123 | struct obj_section *osect; |
3124 | ||
3125 | if (overlay_debugging) | |
3126 | if (section && section_is_overlay (section)) | |
3127 | ALL_OBJSECTIONS (objfile, osect) | |
3128 | if (osect->the_bfd_section == section) | |
c5aa993b | 3129 | return overlay_is_mapped (osect); |
c906108c SS |
3130 | |
3131 | return 0; | |
3132 | } | |
3133 | ||
3134 | /* Function: pc_in_unmapped_range | |
3135 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3136 | ||
3137 | CORE_ADDR | |
fba45db2 | 3138 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3139 | { |
fbd35540 MS |
3140 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3141 | ||
c906108c SS |
3142 | int size; |
3143 | ||
3144 | if (overlay_debugging) | |
3145 | if (section && section_is_overlay (section)) | |
3146 | { | |
2c500098 | 3147 | size = bfd_get_section_size (section); |
c906108c SS |
3148 | if (section->lma <= pc && pc < section->lma + size) |
3149 | return 1; | |
3150 | } | |
3151 | return 0; | |
3152 | } | |
3153 | ||
3154 | /* Function: pc_in_mapped_range | |
3155 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3156 | ||
3157 | CORE_ADDR | |
fba45db2 | 3158 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3159 | { |
fbd35540 MS |
3160 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3161 | ||
c906108c SS |
3162 | int size; |
3163 | ||
3164 | if (overlay_debugging) | |
3165 | if (section && section_is_overlay (section)) | |
3166 | { | |
2c500098 | 3167 | size = bfd_get_section_size (section); |
c906108c SS |
3168 | if (section->vma <= pc && pc < section->vma + size) |
3169 | return 1; | |
3170 | } | |
3171 | return 0; | |
3172 | } | |
3173 | ||
9ec8e6a0 JB |
3174 | |
3175 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3176 | otherwise. */ | |
b9362cc7 | 3177 | static int |
9ec8e6a0 JB |
3178 | sections_overlap (asection *a, asection *b) |
3179 | { | |
fbd35540 MS |
3180 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3181 | ||
9ec8e6a0 | 3182 | CORE_ADDR a_start = a->vma; |
2c500098 | 3183 | CORE_ADDR a_end = a->vma + bfd_get_section_size (a); |
9ec8e6a0 | 3184 | CORE_ADDR b_start = b->vma; |
2c500098 | 3185 | CORE_ADDR b_end = b->vma + bfd_get_section_size (b); |
9ec8e6a0 JB |
3186 | |
3187 | return (a_start < b_end && b_start < a_end); | |
3188 | } | |
3189 | ||
c906108c SS |
3190 | /* Function: overlay_unmapped_address (PC, SECTION) |
3191 | Returns the address corresponding to PC in the unmapped (load) range. | |
3192 | May be the same as PC. */ | |
3193 | ||
3194 | CORE_ADDR | |
fba45db2 | 3195 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3196 | { |
fbd35540 MS |
3197 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3198 | ||
c906108c SS |
3199 | if (overlay_debugging) |
3200 | if (section && section_is_overlay (section) && | |
3201 | pc_in_mapped_range (pc, section)) | |
3202 | return pc + section->lma - section->vma; | |
3203 | ||
3204 | return pc; | |
3205 | } | |
3206 | ||
3207 | /* Function: overlay_mapped_address (PC, SECTION) | |
3208 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3209 | May be the same as PC. */ | |
3210 | ||
3211 | CORE_ADDR | |
fba45db2 | 3212 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3213 | { |
fbd35540 MS |
3214 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3215 | ||
c906108c SS |
3216 | if (overlay_debugging) |
3217 | if (section && section_is_overlay (section) && | |
3218 | pc_in_unmapped_range (pc, section)) | |
3219 | return pc + section->vma - section->lma; | |
3220 | ||
3221 | return pc; | |
3222 | } | |
3223 | ||
3224 | ||
5417f6dc | 3225 | /* Function: symbol_overlayed_address |
c906108c SS |
3226 | Return one of two addresses (relative to the VMA or to the LMA), |
3227 | depending on whether the section is mapped or not. */ | |
3228 | ||
c5aa993b | 3229 | CORE_ADDR |
fba45db2 | 3230 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3231 | { |
3232 | if (overlay_debugging) | |
3233 | { | |
3234 | /* If the symbol has no section, just return its regular address. */ | |
3235 | if (section == 0) | |
3236 | return address; | |
3237 | /* If the symbol's section is not an overlay, just return its address */ | |
3238 | if (!section_is_overlay (section)) | |
3239 | return address; | |
3240 | /* If the symbol's section is mapped, just return its address */ | |
3241 | if (section_is_mapped (section)) | |
3242 | return address; | |
3243 | /* | |
3244 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3245 | * then return its LOADED address rather than its vma address!! | |
3246 | */ | |
3247 | return overlay_unmapped_address (address, section); | |
3248 | } | |
3249 | return address; | |
3250 | } | |
3251 | ||
5417f6dc | 3252 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3253 | Return the best-match overlay section for PC: |
3254 | If PC matches a mapped overlay section's VMA, return that section. | |
3255 | Else if PC matches an unmapped section's VMA, return that section. | |
3256 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3257 | ||
3258 | asection * | |
fba45db2 | 3259 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3260 | { |
c5aa993b | 3261 | struct objfile *objfile; |
c906108c SS |
3262 | struct obj_section *osect, *best_match = NULL; |
3263 | ||
3264 | if (overlay_debugging) | |
3265 | ALL_OBJSECTIONS (objfile, osect) | |
3266 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3267 | { |
3268 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3269 | { | |
3270 | if (overlay_is_mapped (osect)) | |
3271 | return osect->the_bfd_section; | |
3272 | else | |
3273 | best_match = osect; | |
3274 | } | |
3275 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3276 | best_match = osect; | |
3277 | } | |
c906108c SS |
3278 | return best_match ? best_match->the_bfd_section : NULL; |
3279 | } | |
3280 | ||
3281 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3282 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3283 | currently marked as MAPPED, return that section. Else return NULL. */ |
3284 | ||
3285 | asection * | |
fba45db2 | 3286 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3287 | { |
c5aa993b | 3288 | struct objfile *objfile; |
c906108c SS |
3289 | struct obj_section *osect; |
3290 | ||
3291 | if (overlay_debugging) | |
3292 | ALL_OBJSECTIONS (objfile, osect) | |
3293 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3294 | overlay_is_mapped (osect)) | |
c5aa993b | 3295 | return osect->the_bfd_section; |
c906108c SS |
3296 | |
3297 | return NULL; | |
3298 | } | |
3299 | ||
3300 | /* Function: list_overlays_command | |
3301 | Print a list of mapped sections and their PC ranges */ | |
3302 | ||
3303 | void | |
fba45db2 | 3304 | list_overlays_command (char *args, int from_tty) |
c906108c | 3305 | { |
c5aa993b JM |
3306 | int nmapped = 0; |
3307 | struct objfile *objfile; | |
c906108c SS |
3308 | struct obj_section *osect; |
3309 | ||
3310 | if (overlay_debugging) | |
3311 | ALL_OBJSECTIONS (objfile, osect) | |
3312 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3313 | { |
3314 | const char *name; | |
3315 | bfd_vma lma, vma; | |
3316 | int size; | |
3317 | ||
3318 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3319 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3320 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3321 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3322 | ||
3323 | printf_filtered ("Section %s, loaded at ", name); | |
66bf4b3a | 3324 | deprecated_print_address_numeric (lma, 1, gdb_stdout); |
c5aa993b | 3325 | puts_filtered (" - "); |
66bf4b3a | 3326 | deprecated_print_address_numeric (lma + size, 1, gdb_stdout); |
c5aa993b | 3327 | printf_filtered (", mapped at "); |
66bf4b3a | 3328 | deprecated_print_address_numeric (vma, 1, gdb_stdout); |
c5aa993b | 3329 | puts_filtered (" - "); |
66bf4b3a | 3330 | deprecated_print_address_numeric (vma + size, 1, gdb_stdout); |
c5aa993b JM |
3331 | puts_filtered ("\n"); |
3332 | ||
3333 | nmapped++; | |
3334 | } | |
c906108c | 3335 | if (nmapped == 0) |
a3f17187 | 3336 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3337 | } |
3338 | ||
3339 | /* Function: map_overlay_command | |
3340 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3341 | ||
3342 | void | |
fba45db2 | 3343 | map_overlay_command (char *args, int from_tty) |
c906108c | 3344 | { |
c5aa993b JM |
3345 | struct objfile *objfile, *objfile2; |
3346 | struct obj_section *sec, *sec2; | |
3347 | asection *bfdsec; | |
c906108c SS |
3348 | |
3349 | if (!overlay_debugging) | |
8a3fe4f8 | 3350 | error (_("\ |
515ad16c | 3351 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3352 | the 'overlay manual' command.")); |
c906108c SS |
3353 | |
3354 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3355 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3356 | |
3357 | /* First, find a section matching the user supplied argument */ | |
3358 | ALL_OBJSECTIONS (objfile, sec) | |
3359 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3360 | { |
3361 | /* Now, check to see if the section is an overlay. */ | |
3362 | bfdsec = sec->the_bfd_section; | |
3363 | if (!section_is_overlay (bfdsec)) | |
3364 | continue; /* not an overlay section */ | |
3365 | ||
3366 | /* Mark the overlay as "mapped" */ | |
3367 | sec->ovly_mapped = 1; | |
3368 | ||
3369 | /* Next, make a pass and unmap any sections that are | |
3370 | overlapped by this new section: */ | |
3371 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3372 | if (sec2->ovly_mapped |
3373 | && sec != sec2 | |
3374 | && sec->the_bfd_section != sec2->the_bfd_section | |
3375 | && sections_overlap (sec->the_bfd_section, | |
3376 | sec2->the_bfd_section)) | |
c5aa993b JM |
3377 | { |
3378 | if (info_verbose) | |
a3f17187 | 3379 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3380 | bfd_section_name (objfile->obfd, |
3381 | sec2->the_bfd_section)); | |
3382 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3383 | } | |
3384 | return; | |
3385 | } | |
8a3fe4f8 | 3386 | error (_("No overlay section called %s"), args); |
c906108c SS |
3387 | } |
3388 | ||
3389 | /* Function: unmap_overlay_command | |
5417f6dc | 3390 | Mark the overlay section as unmapped |
c906108c SS |
3391 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3392 | ||
3393 | void | |
fba45db2 | 3394 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3395 | { |
c5aa993b | 3396 | struct objfile *objfile; |
c906108c SS |
3397 | struct obj_section *sec; |
3398 | ||
3399 | if (!overlay_debugging) | |
8a3fe4f8 | 3400 | error (_("\ |
515ad16c | 3401 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3402 | the 'overlay manual' command.")); |
c906108c SS |
3403 | |
3404 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3405 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3406 | |
3407 | /* First, find a section matching the user supplied argument */ | |
3408 | ALL_OBJSECTIONS (objfile, sec) | |
3409 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3410 | { |
3411 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3412 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3413 | sec->ovly_mapped = 0; |
3414 | return; | |
3415 | } | |
8a3fe4f8 | 3416 | error (_("No overlay section called %s"), args); |
c906108c SS |
3417 | } |
3418 | ||
3419 | /* Function: overlay_auto_command | |
3420 | A utility command to turn on overlay debugging. | |
3421 | Possibly this should be done via a set/show command. */ | |
3422 | ||
3423 | static void | |
fba45db2 | 3424 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3425 | { |
d874f1e2 | 3426 | overlay_debugging = ovly_auto; |
1900040c | 3427 | enable_overlay_breakpoints (); |
c906108c | 3428 | if (info_verbose) |
a3f17187 | 3429 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3430 | } |
3431 | ||
3432 | /* Function: overlay_manual_command | |
3433 | A utility command to turn on overlay debugging. | |
3434 | Possibly this should be done via a set/show command. */ | |
3435 | ||
3436 | static void | |
fba45db2 | 3437 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3438 | { |
d874f1e2 | 3439 | overlay_debugging = ovly_on; |
1900040c | 3440 | disable_overlay_breakpoints (); |
c906108c | 3441 | if (info_verbose) |
a3f17187 | 3442 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3443 | } |
3444 | ||
3445 | /* Function: overlay_off_command | |
3446 | A utility command to turn on overlay debugging. | |
3447 | Possibly this should be done via a set/show command. */ | |
3448 | ||
3449 | static void | |
fba45db2 | 3450 | overlay_off_command (char *args, int from_tty) |
c906108c | 3451 | { |
d874f1e2 | 3452 | overlay_debugging = ovly_off; |
1900040c | 3453 | disable_overlay_breakpoints (); |
c906108c | 3454 | if (info_verbose) |
a3f17187 | 3455 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3456 | } |
3457 | ||
3458 | static void | |
fba45db2 | 3459 | overlay_load_command (char *args, int from_tty) |
c906108c | 3460 | { |
1c772458 UW |
3461 | if (gdbarch_overlay_update_p (current_gdbarch)) |
3462 | gdbarch_overlay_update (current_gdbarch, NULL); | |
c906108c | 3463 | else |
8a3fe4f8 | 3464 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3465 | } |
3466 | ||
3467 | /* Function: overlay_command | |
3468 | A place-holder for a mis-typed command */ | |
3469 | ||
3470 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3471 | struct cmd_list_element *overlaylist; | |
3472 | ||
3473 | static void | |
fba45db2 | 3474 | overlay_command (char *args, int from_tty) |
c906108c | 3475 | { |
c5aa993b | 3476 | printf_unfiltered |
c906108c SS |
3477 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3478 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3479 | } | |
3480 | ||
3481 | ||
3482 | /* Target Overlays for the "Simplest" overlay manager: | |
3483 | ||
5417f6dc RM |
3484 | This is GDB's default target overlay layer. It works with the |
3485 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3486 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3487 | so targets that use a different runtime overlay manager can |
c906108c SS |
3488 | substitute their own overlay_update function and take over the |
3489 | function pointer. | |
3490 | ||
3491 | The overlay_update function pokes around in the target's data structures | |
3492 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3493 | this information. | |
3494 | ||
3495 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3496 | unsigned _novlys; /# number of overlay sections #/ |
3497 | unsigned _ovly_table[_novlys][4] = { | |
3498 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3499 | {..., ..., ..., ...}, | |
3500 | } | |
3501 | unsigned _novly_regions; /# number of overlay regions #/ | |
3502 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3503 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3504 | {..., ..., ...}, | |
3505 | } | |
c906108c SS |
3506 | These functions will attempt to update GDB's mappedness state in the |
3507 | symbol section table, based on the target's mappedness state. | |
3508 | ||
3509 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3510 | attempt to detect when the cached copy is invalidated. The main | |
3511 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3512 | the cached table and re-reads only the entry for that section from | |
3513 | the target (whenever possible). | |
3514 | */ | |
3515 | ||
3516 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3517 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3518 | #if 0 |
c5aa993b | 3519 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3520 | #endif |
c5aa993b | 3521 | static unsigned cache_novlys = 0; |
c906108c | 3522 | #if 0 |
c5aa993b | 3523 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3524 | #endif |
3525 | static CORE_ADDR cache_ovly_table_base = 0; | |
3526 | #if 0 | |
3527 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3528 | #endif | |
c5aa993b JM |
3529 | enum ovly_index |
3530 | { | |
3531 | VMA, SIZE, LMA, MAPPED | |
3532 | }; | |
c906108c SS |
3533 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3534 | ||
3535 | /* Throw away the cached copy of _ovly_table */ | |
3536 | static void | |
fba45db2 | 3537 | simple_free_overlay_table (void) |
c906108c SS |
3538 | { |
3539 | if (cache_ovly_table) | |
b8c9b27d | 3540 | xfree (cache_ovly_table); |
c5aa993b | 3541 | cache_novlys = 0; |
c906108c SS |
3542 | cache_ovly_table = NULL; |
3543 | cache_ovly_table_base = 0; | |
3544 | } | |
3545 | ||
3546 | #if 0 | |
3547 | /* Throw away the cached copy of _ovly_region_table */ | |
3548 | static void | |
fba45db2 | 3549 | simple_free_overlay_region_table (void) |
c906108c SS |
3550 | { |
3551 | if (cache_ovly_region_table) | |
b8c9b27d | 3552 | xfree (cache_ovly_region_table); |
c5aa993b | 3553 | cache_novly_regions = 0; |
c906108c SS |
3554 | cache_ovly_region_table = NULL; |
3555 | cache_ovly_region_table_base = 0; | |
3556 | } | |
3557 | #endif | |
3558 | ||
3559 | /* Read an array of ints from the target into a local buffer. | |
3560 | Convert to host order. int LEN is number of ints */ | |
3561 | static void | |
fba45db2 | 3562 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3563 | { |
34c0bd93 | 3564 | /* FIXME (alloca): Not safe if array is very large. */ |
777ea8f1 | 3565 | gdb_byte *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3566 | int i; |
c906108c SS |
3567 | |
3568 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3569 | for (i = 0; i < len; i++) | |
c5aa993b | 3570 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3571 | TARGET_LONG_BYTES); |
3572 | } | |
3573 | ||
3574 | /* Find and grab a copy of the target _ovly_table | |
3575 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3576 | static int |
fba45db2 | 3577 | simple_read_overlay_table (void) |
c906108c | 3578 | { |
0d43edd1 | 3579 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3580 | |
3581 | simple_free_overlay_table (); | |
9b27852e | 3582 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3583 | if (! novlys_msym) |
c906108c | 3584 | { |
8a3fe4f8 | 3585 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3586 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3587 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3588 | return 0; |
c906108c | 3589 | } |
0d43edd1 | 3590 | |
9b27852e | 3591 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3592 | if (! ovly_table_msym) |
3593 | { | |
8a3fe4f8 | 3594 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3595 | "`_ovly_table' array\n" |
8a3fe4f8 | 3596 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3597 | return 0; |
3598 | } | |
3599 | ||
3600 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3601 | cache_ovly_table | |
3602 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3603 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3604 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3605 | (unsigned int *) cache_ovly_table, |
0d43edd1 JB |
3606 | cache_novlys * 4); |
3607 | ||
c5aa993b | 3608 | return 1; /* SUCCESS */ |
c906108c SS |
3609 | } |
3610 | ||
3611 | #if 0 | |
3612 | /* Find and grab a copy of the target _ovly_region_table | |
3613 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3614 | static int |
fba45db2 | 3615 | simple_read_overlay_region_table (void) |
c906108c SS |
3616 | { |
3617 | struct minimal_symbol *msym; | |
3618 | ||
3619 | simple_free_overlay_region_table (); | |
9b27852e | 3620 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3621 | if (msym != NULL) |
3622 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3623 | else |
3624 | return 0; /* failure */ | |
c906108c SS |
3625 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3626 | if (cache_ovly_region_table != NULL) | |
3627 | { | |
9b27852e | 3628 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3629 | if (msym != NULL) |
3630 | { | |
3631 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3632 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3633 | (unsigned int *) cache_ovly_region_table, |
c906108c SS |
3634 | cache_novly_regions * 3); |
3635 | } | |
c5aa993b JM |
3636 | else |
3637 | return 0; /* failure */ | |
c906108c | 3638 | } |
c5aa993b JM |
3639 | else |
3640 | return 0; /* failure */ | |
3641 | return 1; /* SUCCESS */ | |
c906108c SS |
3642 | } |
3643 | #endif | |
3644 | ||
5417f6dc | 3645 | /* Function: simple_overlay_update_1 |
c906108c SS |
3646 | A helper function for simple_overlay_update. Assuming a cached copy |
3647 | of _ovly_table exists, look through it to find an entry whose vma, | |
3648 | lma and size match those of OSECT. Re-read the entry and make sure | |
3649 | it still matches OSECT (else the table may no longer be valid). | |
3650 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3651 | success, 0 for failure. */ | |
3652 | ||
3653 | static int | |
fba45db2 | 3654 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3655 | { |
3656 | int i, size; | |
fbd35540 MS |
3657 | bfd *obfd = osect->objfile->obfd; |
3658 | asection *bsect = osect->the_bfd_section; | |
c906108c | 3659 | |
2c500098 | 3660 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3661 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3662 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3663 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3664 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3665 | { |
3666 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
777ea8f1 | 3667 | (unsigned int *) cache_ovly_table[i], 4); |
fbd35540 MS |
3668 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3669 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3670 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3671 | { |
3672 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3673 | return 1; | |
3674 | } | |
fbd35540 | 3675 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3676 | return 0; |
3677 | } | |
3678 | return 0; | |
3679 | } | |
3680 | ||
3681 | /* Function: simple_overlay_update | |
5417f6dc RM |
3682 | If OSECT is NULL, then update all sections' mapped state |
3683 | (after re-reading the entire target _ovly_table). | |
3684 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3685 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3686 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3687 | re-read the entire cache, and go ahead and update all sections. */ |
3688 | ||
1c772458 | 3689 | void |
fba45db2 | 3690 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3691 | { |
c5aa993b | 3692 | struct objfile *objfile; |
c906108c SS |
3693 | |
3694 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3695 | if (osect) | |
3696 | /* Have we got a cached copy of the target's overlay table? */ | |
3697 | if (cache_ovly_table != NULL) | |
3698 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3699 | if (cache_ovly_table_base == |
9b27852e | 3700 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3701 | /* Then go ahead and try to look up this single section in the cache */ |
3702 | if (simple_overlay_update_1 (osect)) | |
3703 | /* Found it! We're done. */ | |
3704 | return; | |
3705 | ||
3706 | /* Cached table no good: need to read the entire table anew. | |
3707 | Or else we want all the sections, in which case it's actually | |
3708 | more efficient to read the whole table in one block anyway. */ | |
3709 | ||
0d43edd1 JB |
3710 | if (! simple_read_overlay_table ()) |
3711 | return; | |
3712 | ||
c906108c SS |
3713 | /* Now may as well update all sections, even if only one was requested. */ |
3714 | ALL_OBJSECTIONS (objfile, osect) | |
3715 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3716 | { |
3717 | int i, size; | |
fbd35540 MS |
3718 | bfd *obfd = osect->objfile->obfd; |
3719 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3720 | |
2c500098 | 3721 | size = bfd_get_section_size (bsect); |
c5aa993b | 3722 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3723 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3724 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3725 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3726 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3727 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3728 | break; /* finished with inner for loop: break out */ | |
3729 | } | |
3730 | } | |
c906108c SS |
3731 | } |
3732 | ||
086df311 DJ |
3733 | /* Set the output sections and output offsets for section SECTP in |
3734 | ABFD. The relocation code in BFD will read these offsets, so we | |
3735 | need to be sure they're initialized. We map each section to itself, | |
3736 | with no offset; this means that SECTP->vma will be honored. */ | |
3737 | ||
3738 | static void | |
3739 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3740 | { | |
3741 | sectp->output_section = sectp; | |
3742 | sectp->output_offset = 0; | |
3743 | } | |
3744 | ||
3745 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3746 | contents are stored in BUF if it is non-NULL, or returned in a | |
3747 | malloc'd buffer otherwise. | |
3748 | ||
3749 | For some platforms and debug info formats, shared libraries contain | |
3750 | relocations against the debug sections (particularly for DWARF-2; | |
3751 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3752 | the version of the linker in use). Also, ELF object files naturally | |
3753 | have unresolved relocations for their debug sections. We need to apply | |
3754 | the relocations in order to get the locations of symbols correct. */ | |
3755 | ||
3756 | bfd_byte * | |
3757 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3758 | { | |
3759 | /* We're only interested in debugging sections with relocation | |
3760 | information. */ | |
3761 | if ((sectp->flags & SEC_RELOC) == 0) | |
3762 | return NULL; | |
3763 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3764 | return NULL; | |
3765 | ||
3766 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3767 | all sections begin at 0. */ | |
3768 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3769 | ||
97606a13 | 3770 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3771 | } |
c906108c SS |
3772 | |
3773 | void | |
fba45db2 | 3774 | _initialize_symfile (void) |
c906108c SS |
3775 | { |
3776 | struct cmd_list_element *c; | |
c5aa993b | 3777 | |
1a966eab AC |
3778 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3779 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3780 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3781 | to execute."), &cmdlist); |
5ba2abeb | 3782 | set_cmd_completer (c, filename_completer); |
c906108c | 3783 | |
1a966eab | 3784 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3785 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 3786 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 3787 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3788 | The optional arguments are section-name section-address pairs and\n\ |
3789 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3790 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3791 | &cmdlist); |
5ba2abeb | 3792 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3793 | |
3794 | c = add_cmd ("add-shared-symbol-files", class_files, | |
1a966eab AC |
3795 | add_shared_symbol_files_command, _("\ |
3796 | Load the symbols from shared objects in the dynamic linker's link map."), | |
c5aa993b | 3797 | &cmdlist); |
c906108c SS |
3798 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3799 | &cmdlist); | |
3800 | ||
1a966eab AC |
3801 | c = add_cmd ("load", class_files, load_command, _("\ |
3802 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3803 | for access from GDB.\n\ |
3804 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3805 | set_cmd_completer (c, filename_completer); |
c906108c | 3806 | |
5bf193a2 AC |
3807 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3808 | &symbol_reloading, _("\ | |
3809 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3810 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3811 | NULL, | |
920d2a44 | 3812 | show_symbol_reloading, |
5bf193a2 | 3813 | &setlist, &showlist); |
c906108c | 3814 | |
c5aa993b | 3815 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3816 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3817 | "overlay ", 0, &cmdlist); |
3818 | ||
3819 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3820 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3821 | ||
c5aa993b | 3822 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3823 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3824 | |
c5aa993b | 3825 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3826 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3827 | |
c5aa993b | 3828 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3829 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3830 | |
c5aa993b | 3831 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3832 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3833 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3834 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3835 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3836 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3837 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3838 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3839 | |
3840 | /* Filename extension to source language lookup table: */ | |
3841 | init_filename_language_table (); | |
26c41df3 AC |
3842 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3843 | &ext_args, _("\ | |
3844 | Set mapping between filename extension and source language."), _("\ | |
3845 | Show mapping between filename extension and source language."), _("\ | |
3846 | Usage: set extension-language .foo bar"), | |
3847 | set_ext_lang_command, | |
920d2a44 | 3848 | show_ext_args, |
26c41df3 | 3849 | &setlist, &showlist); |
c906108c | 3850 | |
c5aa993b | 3851 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3852 | _("All filename extensions associated with a source language.")); |
917317f4 | 3853 | |
525226b5 AC |
3854 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3855 | &debug_file_directory, _("\ | |
3856 | Set the directory where separate debug symbols are searched for."), _("\ | |
3857 | Show the directory where separate debug symbols are searched for."), _("\ | |
3858 | Separate debug symbols are first searched for in the same\n\ | |
3859 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3860 | and lastly at the path of the directory of the binary with\n\ | |
3861 | the global debug-file directory prepended."), | |
3862 | NULL, | |
920d2a44 | 3863 | show_debug_file_directory, |
525226b5 | 3864 | &setlist, &showlist); |
c906108c | 3865 | } |